Commit 78062c50d15d6a0adfa09f6e35a6c52abcc9a32d
Committed by
Tejun Heo
1 parent
1e8f5f761c
Exists in
smarc-imx_3.14.28_1.0.0_ga
and in
1 other branch
libata: cleanup SAT error translation
- Remove duplicate Medium Error Entry. - Fix translations to match SAT2 translation table. - Remove warning messages when translation is not found when decoding error or status register. - Goes through status register decoding when only ABRT bit is set in error register. Tested: When a disk fails, it sets Status = 0x71 [DRDY DF ERR] , Error = 0x4 [ABRT] This patch will make the sense key HARDWARE_ERROR instead. When there is a simple command syntax error: Status = 0x51 [DRDY ERR] , Error = 0x4 [ABRT] The sense key remains ABORTED_COMMAND. tj: Some updates to the description and comments. Signed-off-by: Gwendal Grignou <gwendal@google.com> Signed-off-by: Tejun Heo <tj@kernel.org>
Showing 1 changed file with 17 additions and 20 deletions Inline Diff
drivers/ata/libata-scsi.c
1 | /* | 1 | /* |
2 | * libata-scsi.c - helper library for ATA | 2 | * libata-scsi.c - helper library for ATA |
3 | * | 3 | * |
4 | * Maintained by: Jeff Garzik <jgarzik@pobox.com> | 4 | * Maintained by: Jeff Garzik <jgarzik@pobox.com> |
5 | * Please ALWAYS copy linux-ide@vger.kernel.org | 5 | * Please ALWAYS copy linux-ide@vger.kernel.org |
6 | * on emails. | 6 | * on emails. |
7 | * | 7 | * |
8 | * Copyright 2003-2004 Red Hat, Inc. All rights reserved. | 8 | * Copyright 2003-2004 Red Hat, Inc. All rights reserved. |
9 | * Copyright 2003-2004 Jeff Garzik | 9 | * Copyright 2003-2004 Jeff Garzik |
10 | * | 10 | * |
11 | * | 11 | * |
12 | * This program is free software; you can redistribute it and/or modify | 12 | * This program is free software; you can redistribute it and/or modify |
13 | * it under the terms of the GNU General Public License as published by | 13 | * it under the terms of the GNU General Public License as published by |
14 | * the Free Software Foundation; either version 2, or (at your option) | 14 | * the Free Software Foundation; either version 2, or (at your option) |
15 | * any later version. | 15 | * any later version. |
16 | * | 16 | * |
17 | * This program is distributed in the hope that it will be useful, | 17 | * This program is distributed in the hope that it will be useful, |
18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | 18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
20 | * GNU General Public License for more details. | 20 | * GNU General Public License for more details. |
21 | * | 21 | * |
22 | * You should have received a copy of the GNU General Public License | 22 | * You should have received a copy of the GNU General Public License |
23 | * along with this program; see the file COPYING. If not, write to | 23 | * along with this program; see the file COPYING. If not, write to |
24 | * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. | 24 | * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. |
25 | * | 25 | * |
26 | * | 26 | * |
27 | * libata documentation is available via 'make {ps|pdf}docs', | 27 | * libata documentation is available via 'make {ps|pdf}docs', |
28 | * as Documentation/DocBook/libata.* | 28 | * as Documentation/DocBook/libata.* |
29 | * | 29 | * |
30 | * Hardware documentation available from | 30 | * Hardware documentation available from |
31 | * - http://www.t10.org/ | 31 | * - http://www.t10.org/ |
32 | * - http://www.t13.org/ | 32 | * - http://www.t13.org/ |
33 | * | 33 | * |
34 | */ | 34 | */ |
35 | 35 | ||
36 | #include <linux/slab.h> | 36 | #include <linux/slab.h> |
37 | #include <linux/kernel.h> | 37 | #include <linux/kernel.h> |
38 | #include <linux/blkdev.h> | 38 | #include <linux/blkdev.h> |
39 | #include <linux/spinlock.h> | 39 | #include <linux/spinlock.h> |
40 | #include <linux/export.h> | 40 | #include <linux/export.h> |
41 | #include <scsi/scsi.h> | 41 | #include <scsi/scsi.h> |
42 | #include <scsi/scsi_host.h> | 42 | #include <scsi/scsi_host.h> |
43 | #include <scsi/scsi_cmnd.h> | 43 | #include <scsi/scsi_cmnd.h> |
44 | #include <scsi/scsi_eh.h> | 44 | #include <scsi/scsi_eh.h> |
45 | #include <scsi/scsi_device.h> | 45 | #include <scsi/scsi_device.h> |
46 | #include <scsi/scsi_tcq.h> | 46 | #include <scsi/scsi_tcq.h> |
47 | #include <scsi/scsi_transport.h> | 47 | #include <scsi/scsi_transport.h> |
48 | #include <linux/libata.h> | 48 | #include <linux/libata.h> |
49 | #include <linux/hdreg.h> | 49 | #include <linux/hdreg.h> |
50 | #include <linux/uaccess.h> | 50 | #include <linux/uaccess.h> |
51 | #include <linux/suspend.h> | 51 | #include <linux/suspend.h> |
52 | #include <linux/pm_qos.h> | 52 | #include <linux/pm_qos.h> |
53 | #include <asm/unaligned.h> | 53 | #include <asm/unaligned.h> |
54 | 54 | ||
55 | #include "libata.h" | 55 | #include "libata.h" |
56 | #include "libata-transport.h" | 56 | #include "libata-transport.h" |
57 | 57 | ||
58 | #define ATA_SCSI_RBUF_SIZE 4096 | 58 | #define ATA_SCSI_RBUF_SIZE 4096 |
59 | 59 | ||
60 | static DEFINE_SPINLOCK(ata_scsi_rbuf_lock); | 60 | static DEFINE_SPINLOCK(ata_scsi_rbuf_lock); |
61 | static u8 ata_scsi_rbuf[ATA_SCSI_RBUF_SIZE]; | 61 | static u8 ata_scsi_rbuf[ATA_SCSI_RBUF_SIZE]; |
62 | 62 | ||
63 | typedef unsigned int (*ata_xlat_func_t)(struct ata_queued_cmd *qc); | 63 | typedef unsigned int (*ata_xlat_func_t)(struct ata_queued_cmd *qc); |
64 | 64 | ||
65 | static struct ata_device *__ata_scsi_find_dev(struct ata_port *ap, | 65 | static struct ata_device *__ata_scsi_find_dev(struct ata_port *ap, |
66 | const struct scsi_device *scsidev); | 66 | const struct scsi_device *scsidev); |
67 | static struct ata_device *ata_scsi_find_dev(struct ata_port *ap, | 67 | static struct ata_device *ata_scsi_find_dev(struct ata_port *ap, |
68 | const struct scsi_device *scsidev); | 68 | const struct scsi_device *scsidev); |
69 | 69 | ||
70 | #define RW_RECOVERY_MPAGE 0x1 | 70 | #define RW_RECOVERY_MPAGE 0x1 |
71 | #define RW_RECOVERY_MPAGE_LEN 12 | 71 | #define RW_RECOVERY_MPAGE_LEN 12 |
72 | #define CACHE_MPAGE 0x8 | 72 | #define CACHE_MPAGE 0x8 |
73 | #define CACHE_MPAGE_LEN 20 | 73 | #define CACHE_MPAGE_LEN 20 |
74 | #define CONTROL_MPAGE 0xa | 74 | #define CONTROL_MPAGE 0xa |
75 | #define CONTROL_MPAGE_LEN 12 | 75 | #define CONTROL_MPAGE_LEN 12 |
76 | #define ALL_MPAGES 0x3f | 76 | #define ALL_MPAGES 0x3f |
77 | #define ALL_SUB_MPAGES 0xff | 77 | #define ALL_SUB_MPAGES 0xff |
78 | 78 | ||
79 | 79 | ||
80 | static const u8 def_rw_recovery_mpage[RW_RECOVERY_MPAGE_LEN] = { | 80 | static const u8 def_rw_recovery_mpage[RW_RECOVERY_MPAGE_LEN] = { |
81 | RW_RECOVERY_MPAGE, | 81 | RW_RECOVERY_MPAGE, |
82 | RW_RECOVERY_MPAGE_LEN - 2, | 82 | RW_RECOVERY_MPAGE_LEN - 2, |
83 | (1 << 7), /* AWRE */ | 83 | (1 << 7), /* AWRE */ |
84 | 0, /* read retry count */ | 84 | 0, /* read retry count */ |
85 | 0, 0, 0, 0, | 85 | 0, 0, 0, 0, |
86 | 0, /* write retry count */ | 86 | 0, /* write retry count */ |
87 | 0, 0, 0 | 87 | 0, 0, 0 |
88 | }; | 88 | }; |
89 | 89 | ||
90 | static const u8 def_cache_mpage[CACHE_MPAGE_LEN] = { | 90 | static const u8 def_cache_mpage[CACHE_MPAGE_LEN] = { |
91 | CACHE_MPAGE, | 91 | CACHE_MPAGE, |
92 | CACHE_MPAGE_LEN - 2, | 92 | CACHE_MPAGE_LEN - 2, |
93 | 0, /* contains WCE, needs to be 0 for logic */ | 93 | 0, /* contains WCE, needs to be 0 for logic */ |
94 | 0, 0, 0, 0, 0, 0, 0, 0, 0, | 94 | 0, 0, 0, 0, 0, 0, 0, 0, 0, |
95 | 0, /* contains DRA, needs to be 0 for logic */ | 95 | 0, /* contains DRA, needs to be 0 for logic */ |
96 | 0, 0, 0, 0, 0, 0, 0 | 96 | 0, 0, 0, 0, 0, 0, 0 |
97 | }; | 97 | }; |
98 | 98 | ||
99 | static const u8 def_control_mpage[CONTROL_MPAGE_LEN] = { | 99 | static const u8 def_control_mpage[CONTROL_MPAGE_LEN] = { |
100 | CONTROL_MPAGE, | 100 | CONTROL_MPAGE, |
101 | CONTROL_MPAGE_LEN - 2, | 101 | CONTROL_MPAGE_LEN - 2, |
102 | 2, /* DSENSE=0, GLTSD=1 */ | 102 | 2, /* DSENSE=0, GLTSD=1 */ |
103 | 0, /* [QAM+QERR may be 1, see 05-359r1] */ | 103 | 0, /* [QAM+QERR may be 1, see 05-359r1] */ |
104 | 0, 0, 0, 0, 0xff, 0xff, | 104 | 0, 0, 0, 0, 0xff, 0xff, |
105 | 0, 30 /* extended self test time, see 05-359r1 */ | 105 | 0, 30 /* extended self test time, see 05-359r1 */ |
106 | }; | 106 | }; |
107 | 107 | ||
108 | static const char *ata_lpm_policy_names[] = { | 108 | static const char *ata_lpm_policy_names[] = { |
109 | [ATA_LPM_UNKNOWN] = "max_performance", | 109 | [ATA_LPM_UNKNOWN] = "max_performance", |
110 | [ATA_LPM_MAX_POWER] = "max_performance", | 110 | [ATA_LPM_MAX_POWER] = "max_performance", |
111 | [ATA_LPM_MED_POWER] = "medium_power", | 111 | [ATA_LPM_MED_POWER] = "medium_power", |
112 | [ATA_LPM_MIN_POWER] = "min_power", | 112 | [ATA_LPM_MIN_POWER] = "min_power", |
113 | }; | 113 | }; |
114 | 114 | ||
115 | static ssize_t ata_scsi_lpm_store(struct device *dev, | 115 | static ssize_t ata_scsi_lpm_store(struct device *dev, |
116 | struct device_attribute *attr, | 116 | struct device_attribute *attr, |
117 | const char *buf, size_t count) | 117 | const char *buf, size_t count) |
118 | { | 118 | { |
119 | struct Scsi_Host *shost = class_to_shost(dev); | 119 | struct Scsi_Host *shost = class_to_shost(dev); |
120 | struct ata_port *ap = ata_shost_to_port(shost); | 120 | struct ata_port *ap = ata_shost_to_port(shost); |
121 | enum ata_lpm_policy policy; | 121 | enum ata_lpm_policy policy; |
122 | unsigned long flags; | 122 | unsigned long flags; |
123 | 123 | ||
124 | /* UNKNOWN is internal state, iterate from MAX_POWER */ | 124 | /* UNKNOWN is internal state, iterate from MAX_POWER */ |
125 | for (policy = ATA_LPM_MAX_POWER; | 125 | for (policy = ATA_LPM_MAX_POWER; |
126 | policy < ARRAY_SIZE(ata_lpm_policy_names); policy++) { | 126 | policy < ARRAY_SIZE(ata_lpm_policy_names); policy++) { |
127 | const char *name = ata_lpm_policy_names[policy]; | 127 | const char *name = ata_lpm_policy_names[policy]; |
128 | 128 | ||
129 | if (strncmp(name, buf, strlen(name)) == 0) | 129 | if (strncmp(name, buf, strlen(name)) == 0) |
130 | break; | 130 | break; |
131 | } | 131 | } |
132 | if (policy == ARRAY_SIZE(ata_lpm_policy_names)) | 132 | if (policy == ARRAY_SIZE(ata_lpm_policy_names)) |
133 | return -EINVAL; | 133 | return -EINVAL; |
134 | 134 | ||
135 | spin_lock_irqsave(ap->lock, flags); | 135 | spin_lock_irqsave(ap->lock, flags); |
136 | ap->target_lpm_policy = policy; | 136 | ap->target_lpm_policy = policy; |
137 | ata_port_schedule_eh(ap); | 137 | ata_port_schedule_eh(ap); |
138 | spin_unlock_irqrestore(ap->lock, flags); | 138 | spin_unlock_irqrestore(ap->lock, flags); |
139 | 139 | ||
140 | return count; | 140 | return count; |
141 | } | 141 | } |
142 | 142 | ||
143 | static ssize_t ata_scsi_lpm_show(struct device *dev, | 143 | static ssize_t ata_scsi_lpm_show(struct device *dev, |
144 | struct device_attribute *attr, char *buf) | 144 | struct device_attribute *attr, char *buf) |
145 | { | 145 | { |
146 | struct Scsi_Host *shost = class_to_shost(dev); | 146 | struct Scsi_Host *shost = class_to_shost(dev); |
147 | struct ata_port *ap = ata_shost_to_port(shost); | 147 | struct ata_port *ap = ata_shost_to_port(shost); |
148 | 148 | ||
149 | if (ap->target_lpm_policy >= ARRAY_SIZE(ata_lpm_policy_names)) | 149 | if (ap->target_lpm_policy >= ARRAY_SIZE(ata_lpm_policy_names)) |
150 | return -EINVAL; | 150 | return -EINVAL; |
151 | 151 | ||
152 | return snprintf(buf, PAGE_SIZE, "%s\n", | 152 | return snprintf(buf, PAGE_SIZE, "%s\n", |
153 | ata_lpm_policy_names[ap->target_lpm_policy]); | 153 | ata_lpm_policy_names[ap->target_lpm_policy]); |
154 | } | 154 | } |
155 | DEVICE_ATTR(link_power_management_policy, S_IRUGO | S_IWUSR, | 155 | DEVICE_ATTR(link_power_management_policy, S_IRUGO | S_IWUSR, |
156 | ata_scsi_lpm_show, ata_scsi_lpm_store); | 156 | ata_scsi_lpm_show, ata_scsi_lpm_store); |
157 | EXPORT_SYMBOL_GPL(dev_attr_link_power_management_policy); | 157 | EXPORT_SYMBOL_GPL(dev_attr_link_power_management_policy); |
158 | 158 | ||
159 | static ssize_t ata_scsi_park_show(struct device *device, | 159 | static ssize_t ata_scsi_park_show(struct device *device, |
160 | struct device_attribute *attr, char *buf) | 160 | struct device_attribute *attr, char *buf) |
161 | { | 161 | { |
162 | struct scsi_device *sdev = to_scsi_device(device); | 162 | struct scsi_device *sdev = to_scsi_device(device); |
163 | struct ata_port *ap; | 163 | struct ata_port *ap; |
164 | struct ata_link *link; | 164 | struct ata_link *link; |
165 | struct ata_device *dev; | 165 | struct ata_device *dev; |
166 | unsigned long flags, now; | 166 | unsigned long flags, now; |
167 | unsigned int uninitialized_var(msecs); | 167 | unsigned int uninitialized_var(msecs); |
168 | int rc = 0; | 168 | int rc = 0; |
169 | 169 | ||
170 | ap = ata_shost_to_port(sdev->host); | 170 | ap = ata_shost_to_port(sdev->host); |
171 | 171 | ||
172 | spin_lock_irqsave(ap->lock, flags); | 172 | spin_lock_irqsave(ap->lock, flags); |
173 | dev = ata_scsi_find_dev(ap, sdev); | 173 | dev = ata_scsi_find_dev(ap, sdev); |
174 | if (!dev) { | 174 | if (!dev) { |
175 | rc = -ENODEV; | 175 | rc = -ENODEV; |
176 | goto unlock; | 176 | goto unlock; |
177 | } | 177 | } |
178 | if (dev->flags & ATA_DFLAG_NO_UNLOAD) { | 178 | if (dev->flags & ATA_DFLAG_NO_UNLOAD) { |
179 | rc = -EOPNOTSUPP; | 179 | rc = -EOPNOTSUPP; |
180 | goto unlock; | 180 | goto unlock; |
181 | } | 181 | } |
182 | 182 | ||
183 | link = dev->link; | 183 | link = dev->link; |
184 | now = jiffies; | 184 | now = jiffies; |
185 | if (ap->pflags & ATA_PFLAG_EH_IN_PROGRESS && | 185 | if (ap->pflags & ATA_PFLAG_EH_IN_PROGRESS && |
186 | link->eh_context.unloaded_mask & (1 << dev->devno) && | 186 | link->eh_context.unloaded_mask & (1 << dev->devno) && |
187 | time_after(dev->unpark_deadline, now)) | 187 | time_after(dev->unpark_deadline, now)) |
188 | msecs = jiffies_to_msecs(dev->unpark_deadline - now); | 188 | msecs = jiffies_to_msecs(dev->unpark_deadline - now); |
189 | else | 189 | else |
190 | msecs = 0; | 190 | msecs = 0; |
191 | 191 | ||
192 | unlock: | 192 | unlock: |
193 | spin_unlock_irq(ap->lock); | 193 | spin_unlock_irq(ap->lock); |
194 | 194 | ||
195 | return rc ? rc : snprintf(buf, 20, "%u\n", msecs); | 195 | return rc ? rc : snprintf(buf, 20, "%u\n", msecs); |
196 | } | 196 | } |
197 | 197 | ||
198 | static ssize_t ata_scsi_park_store(struct device *device, | 198 | static ssize_t ata_scsi_park_store(struct device *device, |
199 | struct device_attribute *attr, | 199 | struct device_attribute *attr, |
200 | const char *buf, size_t len) | 200 | const char *buf, size_t len) |
201 | { | 201 | { |
202 | struct scsi_device *sdev = to_scsi_device(device); | 202 | struct scsi_device *sdev = to_scsi_device(device); |
203 | struct ata_port *ap; | 203 | struct ata_port *ap; |
204 | struct ata_device *dev; | 204 | struct ata_device *dev; |
205 | long int input; | 205 | long int input; |
206 | unsigned long flags; | 206 | unsigned long flags; |
207 | int rc; | 207 | int rc; |
208 | 208 | ||
209 | rc = strict_strtol(buf, 10, &input); | 209 | rc = strict_strtol(buf, 10, &input); |
210 | if (rc || input < -2) | 210 | if (rc || input < -2) |
211 | return -EINVAL; | 211 | return -EINVAL; |
212 | if (input > ATA_TMOUT_MAX_PARK) { | 212 | if (input > ATA_TMOUT_MAX_PARK) { |
213 | rc = -EOVERFLOW; | 213 | rc = -EOVERFLOW; |
214 | input = ATA_TMOUT_MAX_PARK; | 214 | input = ATA_TMOUT_MAX_PARK; |
215 | } | 215 | } |
216 | 216 | ||
217 | ap = ata_shost_to_port(sdev->host); | 217 | ap = ata_shost_to_port(sdev->host); |
218 | 218 | ||
219 | spin_lock_irqsave(ap->lock, flags); | 219 | spin_lock_irqsave(ap->lock, flags); |
220 | dev = ata_scsi_find_dev(ap, sdev); | 220 | dev = ata_scsi_find_dev(ap, sdev); |
221 | if (unlikely(!dev)) { | 221 | if (unlikely(!dev)) { |
222 | rc = -ENODEV; | 222 | rc = -ENODEV; |
223 | goto unlock; | 223 | goto unlock; |
224 | } | 224 | } |
225 | if (dev->class != ATA_DEV_ATA) { | 225 | if (dev->class != ATA_DEV_ATA) { |
226 | rc = -EOPNOTSUPP; | 226 | rc = -EOPNOTSUPP; |
227 | goto unlock; | 227 | goto unlock; |
228 | } | 228 | } |
229 | 229 | ||
230 | if (input >= 0) { | 230 | if (input >= 0) { |
231 | if (dev->flags & ATA_DFLAG_NO_UNLOAD) { | 231 | if (dev->flags & ATA_DFLAG_NO_UNLOAD) { |
232 | rc = -EOPNOTSUPP; | 232 | rc = -EOPNOTSUPP; |
233 | goto unlock; | 233 | goto unlock; |
234 | } | 234 | } |
235 | 235 | ||
236 | dev->unpark_deadline = ata_deadline(jiffies, input); | 236 | dev->unpark_deadline = ata_deadline(jiffies, input); |
237 | dev->link->eh_info.dev_action[dev->devno] |= ATA_EH_PARK; | 237 | dev->link->eh_info.dev_action[dev->devno] |= ATA_EH_PARK; |
238 | ata_port_schedule_eh(ap); | 238 | ata_port_schedule_eh(ap); |
239 | complete(&ap->park_req_pending); | 239 | complete(&ap->park_req_pending); |
240 | } else { | 240 | } else { |
241 | switch (input) { | 241 | switch (input) { |
242 | case -1: | 242 | case -1: |
243 | dev->flags &= ~ATA_DFLAG_NO_UNLOAD; | 243 | dev->flags &= ~ATA_DFLAG_NO_UNLOAD; |
244 | break; | 244 | break; |
245 | case -2: | 245 | case -2: |
246 | dev->flags |= ATA_DFLAG_NO_UNLOAD; | 246 | dev->flags |= ATA_DFLAG_NO_UNLOAD; |
247 | break; | 247 | break; |
248 | } | 248 | } |
249 | } | 249 | } |
250 | unlock: | 250 | unlock: |
251 | spin_unlock_irqrestore(ap->lock, flags); | 251 | spin_unlock_irqrestore(ap->lock, flags); |
252 | 252 | ||
253 | return rc ? rc : len; | 253 | return rc ? rc : len; |
254 | } | 254 | } |
255 | DEVICE_ATTR(unload_heads, S_IRUGO | S_IWUSR, | 255 | DEVICE_ATTR(unload_heads, S_IRUGO | S_IWUSR, |
256 | ata_scsi_park_show, ata_scsi_park_store); | 256 | ata_scsi_park_show, ata_scsi_park_store); |
257 | EXPORT_SYMBOL_GPL(dev_attr_unload_heads); | 257 | EXPORT_SYMBOL_GPL(dev_attr_unload_heads); |
258 | 258 | ||
259 | static void ata_scsi_set_sense(struct scsi_cmnd *cmd, u8 sk, u8 asc, u8 ascq) | 259 | static void ata_scsi_set_sense(struct scsi_cmnd *cmd, u8 sk, u8 asc, u8 ascq) |
260 | { | 260 | { |
261 | cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION; | 261 | cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION; |
262 | 262 | ||
263 | scsi_build_sense_buffer(0, cmd->sense_buffer, sk, asc, ascq); | 263 | scsi_build_sense_buffer(0, cmd->sense_buffer, sk, asc, ascq); |
264 | } | 264 | } |
265 | 265 | ||
266 | static ssize_t | 266 | static ssize_t |
267 | ata_scsi_em_message_store(struct device *dev, struct device_attribute *attr, | 267 | ata_scsi_em_message_store(struct device *dev, struct device_attribute *attr, |
268 | const char *buf, size_t count) | 268 | const char *buf, size_t count) |
269 | { | 269 | { |
270 | struct Scsi_Host *shost = class_to_shost(dev); | 270 | struct Scsi_Host *shost = class_to_shost(dev); |
271 | struct ata_port *ap = ata_shost_to_port(shost); | 271 | struct ata_port *ap = ata_shost_to_port(shost); |
272 | if (ap->ops->em_store && (ap->flags & ATA_FLAG_EM)) | 272 | if (ap->ops->em_store && (ap->flags & ATA_FLAG_EM)) |
273 | return ap->ops->em_store(ap, buf, count); | 273 | return ap->ops->em_store(ap, buf, count); |
274 | return -EINVAL; | 274 | return -EINVAL; |
275 | } | 275 | } |
276 | 276 | ||
277 | static ssize_t | 277 | static ssize_t |
278 | ata_scsi_em_message_show(struct device *dev, struct device_attribute *attr, | 278 | ata_scsi_em_message_show(struct device *dev, struct device_attribute *attr, |
279 | char *buf) | 279 | char *buf) |
280 | { | 280 | { |
281 | struct Scsi_Host *shost = class_to_shost(dev); | 281 | struct Scsi_Host *shost = class_to_shost(dev); |
282 | struct ata_port *ap = ata_shost_to_port(shost); | 282 | struct ata_port *ap = ata_shost_to_port(shost); |
283 | 283 | ||
284 | if (ap->ops->em_show && (ap->flags & ATA_FLAG_EM)) | 284 | if (ap->ops->em_show && (ap->flags & ATA_FLAG_EM)) |
285 | return ap->ops->em_show(ap, buf); | 285 | return ap->ops->em_show(ap, buf); |
286 | return -EINVAL; | 286 | return -EINVAL; |
287 | } | 287 | } |
288 | DEVICE_ATTR(em_message, S_IRUGO | S_IWUSR, | 288 | DEVICE_ATTR(em_message, S_IRUGO | S_IWUSR, |
289 | ata_scsi_em_message_show, ata_scsi_em_message_store); | 289 | ata_scsi_em_message_show, ata_scsi_em_message_store); |
290 | EXPORT_SYMBOL_GPL(dev_attr_em_message); | 290 | EXPORT_SYMBOL_GPL(dev_attr_em_message); |
291 | 291 | ||
292 | static ssize_t | 292 | static ssize_t |
293 | ata_scsi_em_message_type_show(struct device *dev, struct device_attribute *attr, | 293 | ata_scsi_em_message_type_show(struct device *dev, struct device_attribute *attr, |
294 | char *buf) | 294 | char *buf) |
295 | { | 295 | { |
296 | struct Scsi_Host *shost = class_to_shost(dev); | 296 | struct Scsi_Host *shost = class_to_shost(dev); |
297 | struct ata_port *ap = ata_shost_to_port(shost); | 297 | struct ata_port *ap = ata_shost_to_port(shost); |
298 | 298 | ||
299 | return snprintf(buf, 23, "%d\n", ap->em_message_type); | 299 | return snprintf(buf, 23, "%d\n", ap->em_message_type); |
300 | } | 300 | } |
301 | DEVICE_ATTR(em_message_type, S_IRUGO, | 301 | DEVICE_ATTR(em_message_type, S_IRUGO, |
302 | ata_scsi_em_message_type_show, NULL); | 302 | ata_scsi_em_message_type_show, NULL); |
303 | EXPORT_SYMBOL_GPL(dev_attr_em_message_type); | 303 | EXPORT_SYMBOL_GPL(dev_attr_em_message_type); |
304 | 304 | ||
305 | static ssize_t | 305 | static ssize_t |
306 | ata_scsi_activity_show(struct device *dev, struct device_attribute *attr, | 306 | ata_scsi_activity_show(struct device *dev, struct device_attribute *attr, |
307 | char *buf) | 307 | char *buf) |
308 | { | 308 | { |
309 | struct scsi_device *sdev = to_scsi_device(dev); | 309 | struct scsi_device *sdev = to_scsi_device(dev); |
310 | struct ata_port *ap = ata_shost_to_port(sdev->host); | 310 | struct ata_port *ap = ata_shost_to_port(sdev->host); |
311 | struct ata_device *atadev = ata_scsi_find_dev(ap, sdev); | 311 | struct ata_device *atadev = ata_scsi_find_dev(ap, sdev); |
312 | 312 | ||
313 | if (atadev && ap->ops->sw_activity_show && | 313 | if (atadev && ap->ops->sw_activity_show && |
314 | (ap->flags & ATA_FLAG_SW_ACTIVITY)) | 314 | (ap->flags & ATA_FLAG_SW_ACTIVITY)) |
315 | return ap->ops->sw_activity_show(atadev, buf); | 315 | return ap->ops->sw_activity_show(atadev, buf); |
316 | return -EINVAL; | 316 | return -EINVAL; |
317 | } | 317 | } |
318 | 318 | ||
319 | static ssize_t | 319 | static ssize_t |
320 | ata_scsi_activity_store(struct device *dev, struct device_attribute *attr, | 320 | ata_scsi_activity_store(struct device *dev, struct device_attribute *attr, |
321 | const char *buf, size_t count) | 321 | const char *buf, size_t count) |
322 | { | 322 | { |
323 | struct scsi_device *sdev = to_scsi_device(dev); | 323 | struct scsi_device *sdev = to_scsi_device(dev); |
324 | struct ata_port *ap = ata_shost_to_port(sdev->host); | 324 | struct ata_port *ap = ata_shost_to_port(sdev->host); |
325 | struct ata_device *atadev = ata_scsi_find_dev(ap, sdev); | 325 | struct ata_device *atadev = ata_scsi_find_dev(ap, sdev); |
326 | enum sw_activity val; | 326 | enum sw_activity val; |
327 | int rc; | 327 | int rc; |
328 | 328 | ||
329 | if (atadev && ap->ops->sw_activity_store && | 329 | if (atadev && ap->ops->sw_activity_store && |
330 | (ap->flags & ATA_FLAG_SW_ACTIVITY)) { | 330 | (ap->flags & ATA_FLAG_SW_ACTIVITY)) { |
331 | val = simple_strtoul(buf, NULL, 0); | 331 | val = simple_strtoul(buf, NULL, 0); |
332 | switch (val) { | 332 | switch (val) { |
333 | case OFF: case BLINK_ON: case BLINK_OFF: | 333 | case OFF: case BLINK_ON: case BLINK_OFF: |
334 | rc = ap->ops->sw_activity_store(atadev, val); | 334 | rc = ap->ops->sw_activity_store(atadev, val); |
335 | if (!rc) | 335 | if (!rc) |
336 | return count; | 336 | return count; |
337 | else | 337 | else |
338 | return rc; | 338 | return rc; |
339 | } | 339 | } |
340 | } | 340 | } |
341 | return -EINVAL; | 341 | return -EINVAL; |
342 | } | 342 | } |
343 | DEVICE_ATTR(sw_activity, S_IWUSR | S_IRUGO, ata_scsi_activity_show, | 343 | DEVICE_ATTR(sw_activity, S_IWUSR | S_IRUGO, ata_scsi_activity_show, |
344 | ata_scsi_activity_store); | 344 | ata_scsi_activity_store); |
345 | EXPORT_SYMBOL_GPL(dev_attr_sw_activity); | 345 | EXPORT_SYMBOL_GPL(dev_attr_sw_activity); |
346 | 346 | ||
347 | struct device_attribute *ata_common_sdev_attrs[] = { | 347 | struct device_attribute *ata_common_sdev_attrs[] = { |
348 | &dev_attr_unload_heads, | 348 | &dev_attr_unload_heads, |
349 | NULL | 349 | NULL |
350 | }; | 350 | }; |
351 | EXPORT_SYMBOL_GPL(ata_common_sdev_attrs); | 351 | EXPORT_SYMBOL_GPL(ata_common_sdev_attrs); |
352 | 352 | ||
353 | static void ata_scsi_invalid_field(struct scsi_cmnd *cmd) | 353 | static void ata_scsi_invalid_field(struct scsi_cmnd *cmd) |
354 | { | 354 | { |
355 | ata_scsi_set_sense(cmd, ILLEGAL_REQUEST, 0x24, 0x0); | 355 | ata_scsi_set_sense(cmd, ILLEGAL_REQUEST, 0x24, 0x0); |
356 | /* "Invalid field in cbd" */ | 356 | /* "Invalid field in cbd" */ |
357 | cmd->scsi_done(cmd); | 357 | cmd->scsi_done(cmd); |
358 | } | 358 | } |
359 | 359 | ||
360 | /** | 360 | /** |
361 | * ata_std_bios_param - generic bios head/sector/cylinder calculator used by sd. | 361 | * ata_std_bios_param - generic bios head/sector/cylinder calculator used by sd. |
362 | * @sdev: SCSI device for which BIOS geometry is to be determined | 362 | * @sdev: SCSI device for which BIOS geometry is to be determined |
363 | * @bdev: block device associated with @sdev | 363 | * @bdev: block device associated with @sdev |
364 | * @capacity: capacity of SCSI device | 364 | * @capacity: capacity of SCSI device |
365 | * @geom: location to which geometry will be output | 365 | * @geom: location to which geometry will be output |
366 | * | 366 | * |
367 | * Generic bios head/sector/cylinder calculator | 367 | * Generic bios head/sector/cylinder calculator |
368 | * used by sd. Most BIOSes nowadays expect a XXX/255/16 (CHS) | 368 | * used by sd. Most BIOSes nowadays expect a XXX/255/16 (CHS) |
369 | * mapping. Some situations may arise where the disk is not | 369 | * mapping. Some situations may arise where the disk is not |
370 | * bootable if this is not used. | 370 | * bootable if this is not used. |
371 | * | 371 | * |
372 | * LOCKING: | 372 | * LOCKING: |
373 | * Defined by the SCSI layer. We don't really care. | 373 | * Defined by the SCSI layer. We don't really care. |
374 | * | 374 | * |
375 | * RETURNS: | 375 | * RETURNS: |
376 | * Zero. | 376 | * Zero. |
377 | */ | 377 | */ |
378 | int ata_std_bios_param(struct scsi_device *sdev, struct block_device *bdev, | 378 | int ata_std_bios_param(struct scsi_device *sdev, struct block_device *bdev, |
379 | sector_t capacity, int geom[]) | 379 | sector_t capacity, int geom[]) |
380 | { | 380 | { |
381 | geom[0] = 255; | 381 | geom[0] = 255; |
382 | geom[1] = 63; | 382 | geom[1] = 63; |
383 | sector_div(capacity, 255*63); | 383 | sector_div(capacity, 255*63); |
384 | geom[2] = capacity; | 384 | geom[2] = capacity; |
385 | 385 | ||
386 | return 0; | 386 | return 0; |
387 | } | 387 | } |
388 | 388 | ||
389 | /** | 389 | /** |
390 | * ata_scsi_unlock_native_capacity - unlock native capacity | 390 | * ata_scsi_unlock_native_capacity - unlock native capacity |
391 | * @sdev: SCSI device to adjust device capacity for | 391 | * @sdev: SCSI device to adjust device capacity for |
392 | * | 392 | * |
393 | * This function is called if a partition on @sdev extends beyond | 393 | * This function is called if a partition on @sdev extends beyond |
394 | * the end of the device. It requests EH to unlock HPA. | 394 | * the end of the device. It requests EH to unlock HPA. |
395 | * | 395 | * |
396 | * LOCKING: | 396 | * LOCKING: |
397 | * Defined by the SCSI layer. Might sleep. | 397 | * Defined by the SCSI layer. Might sleep. |
398 | */ | 398 | */ |
399 | void ata_scsi_unlock_native_capacity(struct scsi_device *sdev) | 399 | void ata_scsi_unlock_native_capacity(struct scsi_device *sdev) |
400 | { | 400 | { |
401 | struct ata_port *ap = ata_shost_to_port(sdev->host); | 401 | struct ata_port *ap = ata_shost_to_port(sdev->host); |
402 | struct ata_device *dev; | 402 | struct ata_device *dev; |
403 | unsigned long flags; | 403 | unsigned long flags; |
404 | 404 | ||
405 | spin_lock_irqsave(ap->lock, flags); | 405 | spin_lock_irqsave(ap->lock, flags); |
406 | 406 | ||
407 | dev = ata_scsi_find_dev(ap, sdev); | 407 | dev = ata_scsi_find_dev(ap, sdev); |
408 | if (dev && dev->n_sectors < dev->n_native_sectors) { | 408 | if (dev && dev->n_sectors < dev->n_native_sectors) { |
409 | dev->flags |= ATA_DFLAG_UNLOCK_HPA; | 409 | dev->flags |= ATA_DFLAG_UNLOCK_HPA; |
410 | dev->link->eh_info.action |= ATA_EH_RESET; | 410 | dev->link->eh_info.action |= ATA_EH_RESET; |
411 | ata_port_schedule_eh(ap); | 411 | ata_port_schedule_eh(ap); |
412 | } | 412 | } |
413 | 413 | ||
414 | spin_unlock_irqrestore(ap->lock, flags); | 414 | spin_unlock_irqrestore(ap->lock, flags); |
415 | ata_port_wait_eh(ap); | 415 | ata_port_wait_eh(ap); |
416 | } | 416 | } |
417 | 417 | ||
418 | /** | 418 | /** |
419 | * ata_get_identity - Handler for HDIO_GET_IDENTITY ioctl | 419 | * ata_get_identity - Handler for HDIO_GET_IDENTITY ioctl |
420 | * @ap: target port | 420 | * @ap: target port |
421 | * @sdev: SCSI device to get identify data for | 421 | * @sdev: SCSI device to get identify data for |
422 | * @arg: User buffer area for identify data | 422 | * @arg: User buffer area for identify data |
423 | * | 423 | * |
424 | * LOCKING: | 424 | * LOCKING: |
425 | * Defined by the SCSI layer. We don't really care. | 425 | * Defined by the SCSI layer. We don't really care. |
426 | * | 426 | * |
427 | * RETURNS: | 427 | * RETURNS: |
428 | * Zero on success, negative errno on error. | 428 | * Zero on success, negative errno on error. |
429 | */ | 429 | */ |
430 | static int ata_get_identity(struct ata_port *ap, struct scsi_device *sdev, | 430 | static int ata_get_identity(struct ata_port *ap, struct scsi_device *sdev, |
431 | void __user *arg) | 431 | void __user *arg) |
432 | { | 432 | { |
433 | struct ata_device *dev = ata_scsi_find_dev(ap, sdev); | 433 | struct ata_device *dev = ata_scsi_find_dev(ap, sdev); |
434 | u16 __user *dst = arg; | 434 | u16 __user *dst = arg; |
435 | char buf[40]; | 435 | char buf[40]; |
436 | 436 | ||
437 | if (!dev) | 437 | if (!dev) |
438 | return -ENOMSG; | 438 | return -ENOMSG; |
439 | 439 | ||
440 | if (copy_to_user(dst, dev->id, ATA_ID_WORDS * sizeof(u16))) | 440 | if (copy_to_user(dst, dev->id, ATA_ID_WORDS * sizeof(u16))) |
441 | return -EFAULT; | 441 | return -EFAULT; |
442 | 442 | ||
443 | ata_id_string(dev->id, buf, ATA_ID_PROD, ATA_ID_PROD_LEN); | 443 | ata_id_string(dev->id, buf, ATA_ID_PROD, ATA_ID_PROD_LEN); |
444 | if (copy_to_user(dst + ATA_ID_PROD, buf, ATA_ID_PROD_LEN)) | 444 | if (copy_to_user(dst + ATA_ID_PROD, buf, ATA_ID_PROD_LEN)) |
445 | return -EFAULT; | 445 | return -EFAULT; |
446 | 446 | ||
447 | ata_id_string(dev->id, buf, ATA_ID_FW_REV, ATA_ID_FW_REV_LEN); | 447 | ata_id_string(dev->id, buf, ATA_ID_FW_REV, ATA_ID_FW_REV_LEN); |
448 | if (copy_to_user(dst + ATA_ID_FW_REV, buf, ATA_ID_FW_REV_LEN)) | 448 | if (copy_to_user(dst + ATA_ID_FW_REV, buf, ATA_ID_FW_REV_LEN)) |
449 | return -EFAULT; | 449 | return -EFAULT; |
450 | 450 | ||
451 | ata_id_string(dev->id, buf, ATA_ID_SERNO, ATA_ID_SERNO_LEN); | 451 | ata_id_string(dev->id, buf, ATA_ID_SERNO, ATA_ID_SERNO_LEN); |
452 | if (copy_to_user(dst + ATA_ID_SERNO, buf, ATA_ID_SERNO_LEN)) | 452 | if (copy_to_user(dst + ATA_ID_SERNO, buf, ATA_ID_SERNO_LEN)) |
453 | return -EFAULT; | 453 | return -EFAULT; |
454 | 454 | ||
455 | return 0; | 455 | return 0; |
456 | } | 456 | } |
457 | 457 | ||
458 | /** | 458 | /** |
459 | * ata_cmd_ioctl - Handler for HDIO_DRIVE_CMD ioctl | 459 | * ata_cmd_ioctl - Handler for HDIO_DRIVE_CMD ioctl |
460 | * @scsidev: Device to which we are issuing command | 460 | * @scsidev: Device to which we are issuing command |
461 | * @arg: User provided data for issuing command | 461 | * @arg: User provided data for issuing command |
462 | * | 462 | * |
463 | * LOCKING: | 463 | * LOCKING: |
464 | * Defined by the SCSI layer. We don't really care. | 464 | * Defined by the SCSI layer. We don't really care. |
465 | * | 465 | * |
466 | * RETURNS: | 466 | * RETURNS: |
467 | * Zero on success, negative errno on error. | 467 | * Zero on success, negative errno on error. |
468 | */ | 468 | */ |
469 | int ata_cmd_ioctl(struct scsi_device *scsidev, void __user *arg) | 469 | int ata_cmd_ioctl(struct scsi_device *scsidev, void __user *arg) |
470 | { | 470 | { |
471 | int rc = 0; | 471 | int rc = 0; |
472 | u8 scsi_cmd[MAX_COMMAND_SIZE]; | 472 | u8 scsi_cmd[MAX_COMMAND_SIZE]; |
473 | u8 args[4], *argbuf = NULL, *sensebuf = NULL; | 473 | u8 args[4], *argbuf = NULL, *sensebuf = NULL; |
474 | int argsize = 0; | 474 | int argsize = 0; |
475 | enum dma_data_direction data_dir; | 475 | enum dma_data_direction data_dir; |
476 | int cmd_result; | 476 | int cmd_result; |
477 | 477 | ||
478 | if (arg == NULL) | 478 | if (arg == NULL) |
479 | return -EINVAL; | 479 | return -EINVAL; |
480 | 480 | ||
481 | if (copy_from_user(args, arg, sizeof(args))) | 481 | if (copy_from_user(args, arg, sizeof(args))) |
482 | return -EFAULT; | 482 | return -EFAULT; |
483 | 483 | ||
484 | sensebuf = kzalloc(SCSI_SENSE_BUFFERSIZE, GFP_NOIO); | 484 | sensebuf = kzalloc(SCSI_SENSE_BUFFERSIZE, GFP_NOIO); |
485 | if (!sensebuf) | 485 | if (!sensebuf) |
486 | return -ENOMEM; | 486 | return -ENOMEM; |
487 | 487 | ||
488 | memset(scsi_cmd, 0, sizeof(scsi_cmd)); | 488 | memset(scsi_cmd, 0, sizeof(scsi_cmd)); |
489 | 489 | ||
490 | if (args[3]) { | 490 | if (args[3]) { |
491 | argsize = ATA_SECT_SIZE * args[3]; | 491 | argsize = ATA_SECT_SIZE * args[3]; |
492 | argbuf = kmalloc(argsize, GFP_KERNEL); | 492 | argbuf = kmalloc(argsize, GFP_KERNEL); |
493 | if (argbuf == NULL) { | 493 | if (argbuf == NULL) { |
494 | rc = -ENOMEM; | 494 | rc = -ENOMEM; |
495 | goto error; | 495 | goto error; |
496 | } | 496 | } |
497 | 497 | ||
498 | scsi_cmd[1] = (4 << 1); /* PIO Data-in */ | 498 | scsi_cmd[1] = (4 << 1); /* PIO Data-in */ |
499 | scsi_cmd[2] = 0x0e; /* no off.line or cc, read from dev, | 499 | scsi_cmd[2] = 0x0e; /* no off.line or cc, read from dev, |
500 | block count in sector count field */ | 500 | block count in sector count field */ |
501 | data_dir = DMA_FROM_DEVICE; | 501 | data_dir = DMA_FROM_DEVICE; |
502 | } else { | 502 | } else { |
503 | scsi_cmd[1] = (3 << 1); /* Non-data */ | 503 | scsi_cmd[1] = (3 << 1); /* Non-data */ |
504 | scsi_cmd[2] = 0x20; /* cc but no off.line or data xfer */ | 504 | scsi_cmd[2] = 0x20; /* cc but no off.line or data xfer */ |
505 | data_dir = DMA_NONE; | 505 | data_dir = DMA_NONE; |
506 | } | 506 | } |
507 | 507 | ||
508 | scsi_cmd[0] = ATA_16; | 508 | scsi_cmd[0] = ATA_16; |
509 | 509 | ||
510 | scsi_cmd[4] = args[2]; | 510 | scsi_cmd[4] = args[2]; |
511 | if (args[0] == ATA_CMD_SMART) { /* hack -- ide driver does this too */ | 511 | if (args[0] == ATA_CMD_SMART) { /* hack -- ide driver does this too */ |
512 | scsi_cmd[6] = args[3]; | 512 | scsi_cmd[6] = args[3]; |
513 | scsi_cmd[8] = args[1]; | 513 | scsi_cmd[8] = args[1]; |
514 | scsi_cmd[10] = 0x4f; | 514 | scsi_cmd[10] = 0x4f; |
515 | scsi_cmd[12] = 0xc2; | 515 | scsi_cmd[12] = 0xc2; |
516 | } else { | 516 | } else { |
517 | scsi_cmd[6] = args[1]; | 517 | scsi_cmd[6] = args[1]; |
518 | } | 518 | } |
519 | scsi_cmd[14] = args[0]; | 519 | scsi_cmd[14] = args[0]; |
520 | 520 | ||
521 | /* Good values for timeout and retries? Values below | 521 | /* Good values for timeout and retries? Values below |
522 | from scsi_ioctl_send_command() for default case... */ | 522 | from scsi_ioctl_send_command() for default case... */ |
523 | cmd_result = scsi_execute(scsidev, scsi_cmd, data_dir, argbuf, argsize, | 523 | cmd_result = scsi_execute(scsidev, scsi_cmd, data_dir, argbuf, argsize, |
524 | sensebuf, (10*HZ), 5, 0, NULL); | 524 | sensebuf, (10*HZ), 5, 0, NULL); |
525 | 525 | ||
526 | if (driver_byte(cmd_result) == DRIVER_SENSE) {/* sense data available */ | 526 | if (driver_byte(cmd_result) == DRIVER_SENSE) {/* sense data available */ |
527 | u8 *desc = sensebuf + 8; | 527 | u8 *desc = sensebuf + 8; |
528 | cmd_result &= ~(0xFF<<24); /* DRIVER_SENSE is not an error */ | 528 | cmd_result &= ~(0xFF<<24); /* DRIVER_SENSE is not an error */ |
529 | 529 | ||
530 | /* If we set cc then ATA pass-through will cause a | 530 | /* If we set cc then ATA pass-through will cause a |
531 | * check condition even if no error. Filter that. */ | 531 | * check condition even if no error. Filter that. */ |
532 | if (cmd_result & SAM_STAT_CHECK_CONDITION) { | 532 | if (cmd_result & SAM_STAT_CHECK_CONDITION) { |
533 | struct scsi_sense_hdr sshdr; | 533 | struct scsi_sense_hdr sshdr; |
534 | scsi_normalize_sense(sensebuf, SCSI_SENSE_BUFFERSIZE, | 534 | scsi_normalize_sense(sensebuf, SCSI_SENSE_BUFFERSIZE, |
535 | &sshdr); | 535 | &sshdr); |
536 | if (sshdr.sense_key == RECOVERED_ERROR && | 536 | if (sshdr.sense_key == RECOVERED_ERROR && |
537 | sshdr.asc == 0 && sshdr.ascq == 0x1d) | 537 | sshdr.asc == 0 && sshdr.ascq == 0x1d) |
538 | cmd_result &= ~SAM_STAT_CHECK_CONDITION; | 538 | cmd_result &= ~SAM_STAT_CHECK_CONDITION; |
539 | } | 539 | } |
540 | 540 | ||
541 | /* Send userspace a few ATA registers (same as drivers/ide) */ | 541 | /* Send userspace a few ATA registers (same as drivers/ide) */ |
542 | if (sensebuf[0] == 0x72 && /* format is "descriptor" */ | 542 | if (sensebuf[0] == 0x72 && /* format is "descriptor" */ |
543 | desc[0] == 0x09) { /* code is "ATA Descriptor" */ | 543 | desc[0] == 0x09) { /* code is "ATA Descriptor" */ |
544 | args[0] = desc[13]; /* status */ | 544 | args[0] = desc[13]; /* status */ |
545 | args[1] = desc[3]; /* error */ | 545 | args[1] = desc[3]; /* error */ |
546 | args[2] = desc[5]; /* sector count (0:7) */ | 546 | args[2] = desc[5]; /* sector count (0:7) */ |
547 | if (copy_to_user(arg, args, sizeof(args))) | 547 | if (copy_to_user(arg, args, sizeof(args))) |
548 | rc = -EFAULT; | 548 | rc = -EFAULT; |
549 | } | 549 | } |
550 | } | 550 | } |
551 | 551 | ||
552 | 552 | ||
553 | if (cmd_result) { | 553 | if (cmd_result) { |
554 | rc = -EIO; | 554 | rc = -EIO; |
555 | goto error; | 555 | goto error; |
556 | } | 556 | } |
557 | 557 | ||
558 | if ((argbuf) | 558 | if ((argbuf) |
559 | && copy_to_user(arg + sizeof(args), argbuf, argsize)) | 559 | && copy_to_user(arg + sizeof(args), argbuf, argsize)) |
560 | rc = -EFAULT; | 560 | rc = -EFAULT; |
561 | error: | 561 | error: |
562 | kfree(sensebuf); | 562 | kfree(sensebuf); |
563 | kfree(argbuf); | 563 | kfree(argbuf); |
564 | return rc; | 564 | return rc; |
565 | } | 565 | } |
566 | 566 | ||
567 | /** | 567 | /** |
568 | * ata_task_ioctl - Handler for HDIO_DRIVE_TASK ioctl | 568 | * ata_task_ioctl - Handler for HDIO_DRIVE_TASK ioctl |
569 | * @scsidev: Device to which we are issuing command | 569 | * @scsidev: Device to which we are issuing command |
570 | * @arg: User provided data for issuing command | 570 | * @arg: User provided data for issuing command |
571 | * | 571 | * |
572 | * LOCKING: | 572 | * LOCKING: |
573 | * Defined by the SCSI layer. We don't really care. | 573 | * Defined by the SCSI layer. We don't really care. |
574 | * | 574 | * |
575 | * RETURNS: | 575 | * RETURNS: |
576 | * Zero on success, negative errno on error. | 576 | * Zero on success, negative errno on error. |
577 | */ | 577 | */ |
578 | int ata_task_ioctl(struct scsi_device *scsidev, void __user *arg) | 578 | int ata_task_ioctl(struct scsi_device *scsidev, void __user *arg) |
579 | { | 579 | { |
580 | int rc = 0; | 580 | int rc = 0; |
581 | u8 scsi_cmd[MAX_COMMAND_SIZE]; | 581 | u8 scsi_cmd[MAX_COMMAND_SIZE]; |
582 | u8 args[7], *sensebuf = NULL; | 582 | u8 args[7], *sensebuf = NULL; |
583 | int cmd_result; | 583 | int cmd_result; |
584 | 584 | ||
585 | if (arg == NULL) | 585 | if (arg == NULL) |
586 | return -EINVAL; | 586 | return -EINVAL; |
587 | 587 | ||
588 | if (copy_from_user(args, arg, sizeof(args))) | 588 | if (copy_from_user(args, arg, sizeof(args))) |
589 | return -EFAULT; | 589 | return -EFAULT; |
590 | 590 | ||
591 | sensebuf = kzalloc(SCSI_SENSE_BUFFERSIZE, GFP_NOIO); | 591 | sensebuf = kzalloc(SCSI_SENSE_BUFFERSIZE, GFP_NOIO); |
592 | if (!sensebuf) | 592 | if (!sensebuf) |
593 | return -ENOMEM; | 593 | return -ENOMEM; |
594 | 594 | ||
595 | memset(scsi_cmd, 0, sizeof(scsi_cmd)); | 595 | memset(scsi_cmd, 0, sizeof(scsi_cmd)); |
596 | scsi_cmd[0] = ATA_16; | 596 | scsi_cmd[0] = ATA_16; |
597 | scsi_cmd[1] = (3 << 1); /* Non-data */ | 597 | scsi_cmd[1] = (3 << 1); /* Non-data */ |
598 | scsi_cmd[2] = 0x20; /* cc but no off.line or data xfer */ | 598 | scsi_cmd[2] = 0x20; /* cc but no off.line or data xfer */ |
599 | scsi_cmd[4] = args[1]; | 599 | scsi_cmd[4] = args[1]; |
600 | scsi_cmd[6] = args[2]; | 600 | scsi_cmd[6] = args[2]; |
601 | scsi_cmd[8] = args[3]; | 601 | scsi_cmd[8] = args[3]; |
602 | scsi_cmd[10] = args[4]; | 602 | scsi_cmd[10] = args[4]; |
603 | scsi_cmd[12] = args[5]; | 603 | scsi_cmd[12] = args[5]; |
604 | scsi_cmd[13] = args[6] & 0x4f; | 604 | scsi_cmd[13] = args[6] & 0x4f; |
605 | scsi_cmd[14] = args[0]; | 605 | scsi_cmd[14] = args[0]; |
606 | 606 | ||
607 | /* Good values for timeout and retries? Values below | 607 | /* Good values for timeout and retries? Values below |
608 | from scsi_ioctl_send_command() for default case... */ | 608 | from scsi_ioctl_send_command() for default case... */ |
609 | cmd_result = scsi_execute(scsidev, scsi_cmd, DMA_NONE, NULL, 0, | 609 | cmd_result = scsi_execute(scsidev, scsi_cmd, DMA_NONE, NULL, 0, |
610 | sensebuf, (10*HZ), 5, 0, NULL); | 610 | sensebuf, (10*HZ), 5, 0, NULL); |
611 | 611 | ||
612 | if (driver_byte(cmd_result) == DRIVER_SENSE) {/* sense data available */ | 612 | if (driver_byte(cmd_result) == DRIVER_SENSE) {/* sense data available */ |
613 | u8 *desc = sensebuf + 8; | 613 | u8 *desc = sensebuf + 8; |
614 | cmd_result &= ~(0xFF<<24); /* DRIVER_SENSE is not an error */ | 614 | cmd_result &= ~(0xFF<<24); /* DRIVER_SENSE is not an error */ |
615 | 615 | ||
616 | /* If we set cc then ATA pass-through will cause a | 616 | /* If we set cc then ATA pass-through will cause a |
617 | * check condition even if no error. Filter that. */ | 617 | * check condition even if no error. Filter that. */ |
618 | if (cmd_result & SAM_STAT_CHECK_CONDITION) { | 618 | if (cmd_result & SAM_STAT_CHECK_CONDITION) { |
619 | struct scsi_sense_hdr sshdr; | 619 | struct scsi_sense_hdr sshdr; |
620 | scsi_normalize_sense(sensebuf, SCSI_SENSE_BUFFERSIZE, | 620 | scsi_normalize_sense(sensebuf, SCSI_SENSE_BUFFERSIZE, |
621 | &sshdr); | 621 | &sshdr); |
622 | if (sshdr.sense_key == RECOVERED_ERROR && | 622 | if (sshdr.sense_key == RECOVERED_ERROR && |
623 | sshdr.asc == 0 && sshdr.ascq == 0x1d) | 623 | sshdr.asc == 0 && sshdr.ascq == 0x1d) |
624 | cmd_result &= ~SAM_STAT_CHECK_CONDITION; | 624 | cmd_result &= ~SAM_STAT_CHECK_CONDITION; |
625 | } | 625 | } |
626 | 626 | ||
627 | /* Send userspace ATA registers */ | 627 | /* Send userspace ATA registers */ |
628 | if (sensebuf[0] == 0x72 && /* format is "descriptor" */ | 628 | if (sensebuf[0] == 0x72 && /* format is "descriptor" */ |
629 | desc[0] == 0x09) {/* code is "ATA Descriptor" */ | 629 | desc[0] == 0x09) {/* code is "ATA Descriptor" */ |
630 | args[0] = desc[13]; /* status */ | 630 | args[0] = desc[13]; /* status */ |
631 | args[1] = desc[3]; /* error */ | 631 | args[1] = desc[3]; /* error */ |
632 | args[2] = desc[5]; /* sector count (0:7) */ | 632 | args[2] = desc[5]; /* sector count (0:7) */ |
633 | args[3] = desc[7]; /* lbal */ | 633 | args[3] = desc[7]; /* lbal */ |
634 | args[4] = desc[9]; /* lbam */ | 634 | args[4] = desc[9]; /* lbam */ |
635 | args[5] = desc[11]; /* lbah */ | 635 | args[5] = desc[11]; /* lbah */ |
636 | args[6] = desc[12]; /* select */ | 636 | args[6] = desc[12]; /* select */ |
637 | if (copy_to_user(arg, args, sizeof(args))) | 637 | if (copy_to_user(arg, args, sizeof(args))) |
638 | rc = -EFAULT; | 638 | rc = -EFAULT; |
639 | } | 639 | } |
640 | } | 640 | } |
641 | 641 | ||
642 | if (cmd_result) { | 642 | if (cmd_result) { |
643 | rc = -EIO; | 643 | rc = -EIO; |
644 | goto error; | 644 | goto error; |
645 | } | 645 | } |
646 | 646 | ||
647 | error: | 647 | error: |
648 | kfree(sensebuf); | 648 | kfree(sensebuf); |
649 | return rc; | 649 | return rc; |
650 | } | 650 | } |
651 | 651 | ||
652 | static int ata_ioc32(struct ata_port *ap) | 652 | static int ata_ioc32(struct ata_port *ap) |
653 | { | 653 | { |
654 | if (ap->flags & ATA_FLAG_PIO_DMA) | 654 | if (ap->flags & ATA_FLAG_PIO_DMA) |
655 | return 1; | 655 | return 1; |
656 | if (ap->pflags & ATA_PFLAG_PIO32) | 656 | if (ap->pflags & ATA_PFLAG_PIO32) |
657 | return 1; | 657 | return 1; |
658 | return 0; | 658 | return 0; |
659 | } | 659 | } |
660 | 660 | ||
661 | int ata_sas_scsi_ioctl(struct ata_port *ap, struct scsi_device *scsidev, | 661 | int ata_sas_scsi_ioctl(struct ata_port *ap, struct scsi_device *scsidev, |
662 | int cmd, void __user *arg) | 662 | int cmd, void __user *arg) |
663 | { | 663 | { |
664 | int val = -EINVAL, rc = -EINVAL; | 664 | int val = -EINVAL, rc = -EINVAL; |
665 | unsigned long flags; | 665 | unsigned long flags; |
666 | 666 | ||
667 | switch (cmd) { | 667 | switch (cmd) { |
668 | case ATA_IOC_GET_IO32: | 668 | case ATA_IOC_GET_IO32: |
669 | spin_lock_irqsave(ap->lock, flags); | 669 | spin_lock_irqsave(ap->lock, flags); |
670 | val = ata_ioc32(ap); | 670 | val = ata_ioc32(ap); |
671 | spin_unlock_irqrestore(ap->lock, flags); | 671 | spin_unlock_irqrestore(ap->lock, flags); |
672 | if (copy_to_user(arg, &val, 1)) | 672 | if (copy_to_user(arg, &val, 1)) |
673 | return -EFAULT; | 673 | return -EFAULT; |
674 | return 0; | 674 | return 0; |
675 | 675 | ||
676 | case ATA_IOC_SET_IO32: | 676 | case ATA_IOC_SET_IO32: |
677 | val = (unsigned long) arg; | 677 | val = (unsigned long) arg; |
678 | rc = 0; | 678 | rc = 0; |
679 | spin_lock_irqsave(ap->lock, flags); | 679 | spin_lock_irqsave(ap->lock, flags); |
680 | if (ap->pflags & ATA_PFLAG_PIO32CHANGE) { | 680 | if (ap->pflags & ATA_PFLAG_PIO32CHANGE) { |
681 | if (val) | 681 | if (val) |
682 | ap->pflags |= ATA_PFLAG_PIO32; | 682 | ap->pflags |= ATA_PFLAG_PIO32; |
683 | else | 683 | else |
684 | ap->pflags &= ~ATA_PFLAG_PIO32; | 684 | ap->pflags &= ~ATA_PFLAG_PIO32; |
685 | } else { | 685 | } else { |
686 | if (val != ata_ioc32(ap)) | 686 | if (val != ata_ioc32(ap)) |
687 | rc = -EINVAL; | 687 | rc = -EINVAL; |
688 | } | 688 | } |
689 | spin_unlock_irqrestore(ap->lock, flags); | 689 | spin_unlock_irqrestore(ap->lock, flags); |
690 | return rc; | 690 | return rc; |
691 | 691 | ||
692 | case HDIO_GET_IDENTITY: | 692 | case HDIO_GET_IDENTITY: |
693 | return ata_get_identity(ap, scsidev, arg); | 693 | return ata_get_identity(ap, scsidev, arg); |
694 | 694 | ||
695 | case HDIO_DRIVE_CMD: | 695 | case HDIO_DRIVE_CMD: |
696 | if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) | 696 | if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) |
697 | return -EACCES; | 697 | return -EACCES; |
698 | return ata_cmd_ioctl(scsidev, arg); | 698 | return ata_cmd_ioctl(scsidev, arg); |
699 | 699 | ||
700 | case HDIO_DRIVE_TASK: | 700 | case HDIO_DRIVE_TASK: |
701 | if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) | 701 | if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) |
702 | return -EACCES; | 702 | return -EACCES; |
703 | return ata_task_ioctl(scsidev, arg); | 703 | return ata_task_ioctl(scsidev, arg); |
704 | 704 | ||
705 | default: | 705 | default: |
706 | rc = -ENOTTY; | 706 | rc = -ENOTTY; |
707 | break; | 707 | break; |
708 | } | 708 | } |
709 | 709 | ||
710 | return rc; | 710 | return rc; |
711 | } | 711 | } |
712 | EXPORT_SYMBOL_GPL(ata_sas_scsi_ioctl); | 712 | EXPORT_SYMBOL_GPL(ata_sas_scsi_ioctl); |
713 | 713 | ||
714 | int ata_scsi_ioctl(struct scsi_device *scsidev, int cmd, void __user *arg) | 714 | int ata_scsi_ioctl(struct scsi_device *scsidev, int cmd, void __user *arg) |
715 | { | 715 | { |
716 | return ata_sas_scsi_ioctl(ata_shost_to_port(scsidev->host), | 716 | return ata_sas_scsi_ioctl(ata_shost_to_port(scsidev->host), |
717 | scsidev, cmd, arg); | 717 | scsidev, cmd, arg); |
718 | } | 718 | } |
719 | EXPORT_SYMBOL_GPL(ata_scsi_ioctl); | 719 | EXPORT_SYMBOL_GPL(ata_scsi_ioctl); |
720 | 720 | ||
721 | /** | 721 | /** |
722 | * ata_scsi_qc_new - acquire new ata_queued_cmd reference | 722 | * ata_scsi_qc_new - acquire new ata_queued_cmd reference |
723 | * @dev: ATA device to which the new command is attached | 723 | * @dev: ATA device to which the new command is attached |
724 | * @cmd: SCSI command that originated this ATA command | 724 | * @cmd: SCSI command that originated this ATA command |
725 | * | 725 | * |
726 | * Obtain a reference to an unused ata_queued_cmd structure, | 726 | * Obtain a reference to an unused ata_queued_cmd structure, |
727 | * which is the basic libata structure representing a single | 727 | * which is the basic libata structure representing a single |
728 | * ATA command sent to the hardware. | 728 | * ATA command sent to the hardware. |
729 | * | 729 | * |
730 | * If a command was available, fill in the SCSI-specific | 730 | * If a command was available, fill in the SCSI-specific |
731 | * portions of the structure with information on the | 731 | * portions of the structure with information on the |
732 | * current command. | 732 | * current command. |
733 | * | 733 | * |
734 | * LOCKING: | 734 | * LOCKING: |
735 | * spin_lock_irqsave(host lock) | 735 | * spin_lock_irqsave(host lock) |
736 | * | 736 | * |
737 | * RETURNS: | 737 | * RETURNS: |
738 | * Command allocated, or %NULL if none available. | 738 | * Command allocated, or %NULL if none available. |
739 | */ | 739 | */ |
740 | static struct ata_queued_cmd *ata_scsi_qc_new(struct ata_device *dev, | 740 | static struct ata_queued_cmd *ata_scsi_qc_new(struct ata_device *dev, |
741 | struct scsi_cmnd *cmd) | 741 | struct scsi_cmnd *cmd) |
742 | { | 742 | { |
743 | struct ata_queued_cmd *qc; | 743 | struct ata_queued_cmd *qc; |
744 | 744 | ||
745 | qc = ata_qc_new_init(dev); | 745 | qc = ata_qc_new_init(dev); |
746 | if (qc) { | 746 | if (qc) { |
747 | qc->scsicmd = cmd; | 747 | qc->scsicmd = cmd; |
748 | qc->scsidone = cmd->scsi_done; | 748 | qc->scsidone = cmd->scsi_done; |
749 | 749 | ||
750 | qc->sg = scsi_sglist(cmd); | 750 | qc->sg = scsi_sglist(cmd); |
751 | qc->n_elem = scsi_sg_count(cmd); | 751 | qc->n_elem = scsi_sg_count(cmd); |
752 | } else { | 752 | } else { |
753 | cmd->result = (DID_OK << 16) | (QUEUE_FULL << 1); | 753 | cmd->result = (DID_OK << 16) | (QUEUE_FULL << 1); |
754 | cmd->scsi_done(cmd); | 754 | cmd->scsi_done(cmd); |
755 | } | 755 | } |
756 | 756 | ||
757 | return qc; | 757 | return qc; |
758 | } | 758 | } |
759 | 759 | ||
760 | static void ata_qc_set_pc_nbytes(struct ata_queued_cmd *qc) | 760 | static void ata_qc_set_pc_nbytes(struct ata_queued_cmd *qc) |
761 | { | 761 | { |
762 | struct scsi_cmnd *scmd = qc->scsicmd; | 762 | struct scsi_cmnd *scmd = qc->scsicmd; |
763 | 763 | ||
764 | qc->extrabytes = scmd->request->extra_len; | 764 | qc->extrabytes = scmd->request->extra_len; |
765 | qc->nbytes = scsi_bufflen(scmd) + qc->extrabytes; | 765 | qc->nbytes = scsi_bufflen(scmd) + qc->extrabytes; |
766 | } | 766 | } |
767 | 767 | ||
768 | /** | 768 | /** |
769 | * ata_dump_status - user friendly display of error info | 769 | * ata_dump_status - user friendly display of error info |
770 | * @id: id of the port in question | 770 | * @id: id of the port in question |
771 | * @tf: ptr to filled out taskfile | 771 | * @tf: ptr to filled out taskfile |
772 | * | 772 | * |
773 | * Decode and dump the ATA error/status registers for the user so | 773 | * Decode and dump the ATA error/status registers for the user so |
774 | * that they have some idea what really happened at the non | 774 | * that they have some idea what really happened at the non |
775 | * make-believe layer. | 775 | * make-believe layer. |
776 | * | 776 | * |
777 | * LOCKING: | 777 | * LOCKING: |
778 | * inherited from caller | 778 | * inherited from caller |
779 | */ | 779 | */ |
780 | static void ata_dump_status(unsigned id, struct ata_taskfile *tf) | 780 | static void ata_dump_status(unsigned id, struct ata_taskfile *tf) |
781 | { | 781 | { |
782 | u8 stat = tf->command, err = tf->feature; | 782 | u8 stat = tf->command, err = tf->feature; |
783 | 783 | ||
784 | printk(KERN_WARNING "ata%u: status=0x%02x { ", id, stat); | 784 | printk(KERN_WARNING "ata%u: status=0x%02x { ", id, stat); |
785 | if (stat & ATA_BUSY) { | 785 | if (stat & ATA_BUSY) { |
786 | printk("Busy }\n"); /* Data is not valid in this case */ | 786 | printk("Busy }\n"); /* Data is not valid in this case */ |
787 | } else { | 787 | } else { |
788 | if (stat & 0x40) printk("DriveReady "); | 788 | if (stat & 0x40) printk("DriveReady "); |
789 | if (stat & 0x20) printk("DeviceFault "); | 789 | if (stat & 0x20) printk("DeviceFault "); |
790 | if (stat & 0x10) printk("SeekComplete "); | 790 | if (stat & 0x10) printk("SeekComplete "); |
791 | if (stat & 0x08) printk("DataRequest "); | 791 | if (stat & 0x08) printk("DataRequest "); |
792 | if (stat & 0x04) printk("CorrectedError "); | 792 | if (stat & 0x04) printk("CorrectedError "); |
793 | if (stat & 0x02) printk("Index "); | 793 | if (stat & 0x02) printk("Index "); |
794 | if (stat & 0x01) printk("Error "); | 794 | if (stat & 0x01) printk("Error "); |
795 | printk("}\n"); | 795 | printk("}\n"); |
796 | 796 | ||
797 | if (err) { | 797 | if (err) { |
798 | printk(KERN_WARNING "ata%u: error=0x%02x { ", id, err); | 798 | printk(KERN_WARNING "ata%u: error=0x%02x { ", id, err); |
799 | if (err & 0x04) printk("DriveStatusError "); | 799 | if (err & 0x04) printk("DriveStatusError "); |
800 | if (err & 0x80) { | 800 | if (err & 0x80) { |
801 | if (err & 0x04) printk("BadCRC "); | 801 | if (err & 0x04) printk("BadCRC "); |
802 | else printk("Sector "); | 802 | else printk("Sector "); |
803 | } | 803 | } |
804 | if (err & 0x40) printk("UncorrectableError "); | 804 | if (err & 0x40) printk("UncorrectableError "); |
805 | if (err & 0x10) printk("SectorIdNotFound "); | 805 | if (err & 0x10) printk("SectorIdNotFound "); |
806 | if (err & 0x02) printk("TrackZeroNotFound "); | 806 | if (err & 0x02) printk("TrackZeroNotFound "); |
807 | if (err & 0x01) printk("AddrMarkNotFound "); | 807 | if (err & 0x01) printk("AddrMarkNotFound "); |
808 | printk("}\n"); | 808 | printk("}\n"); |
809 | } | 809 | } |
810 | } | 810 | } |
811 | } | 811 | } |
812 | 812 | ||
813 | /** | 813 | /** |
814 | * ata_to_sense_error - convert ATA error to SCSI error | 814 | * ata_to_sense_error - convert ATA error to SCSI error |
815 | * @id: ATA device number | 815 | * @id: ATA device number |
816 | * @drv_stat: value contained in ATA status register | 816 | * @drv_stat: value contained in ATA status register |
817 | * @drv_err: value contained in ATA error register | 817 | * @drv_err: value contained in ATA error register |
818 | * @sk: the sense key we'll fill out | 818 | * @sk: the sense key we'll fill out |
819 | * @asc: the additional sense code we'll fill out | 819 | * @asc: the additional sense code we'll fill out |
820 | * @ascq: the additional sense code qualifier we'll fill out | 820 | * @ascq: the additional sense code qualifier we'll fill out |
821 | * @verbose: be verbose | 821 | * @verbose: be verbose |
822 | * | 822 | * |
823 | * Converts an ATA error into a SCSI error. Fill out pointers to | 823 | * Converts an ATA error into a SCSI error. Fill out pointers to |
824 | * SK, ASC, and ASCQ bytes for later use in fixed or descriptor | 824 | * SK, ASC, and ASCQ bytes for later use in fixed or descriptor |
825 | * format sense blocks. | 825 | * format sense blocks. |
826 | * | 826 | * |
827 | * LOCKING: | 827 | * LOCKING: |
828 | * spin_lock_irqsave(host lock) | 828 | * spin_lock_irqsave(host lock) |
829 | */ | 829 | */ |
830 | static void ata_to_sense_error(unsigned id, u8 drv_stat, u8 drv_err, u8 *sk, | 830 | static void ata_to_sense_error(unsigned id, u8 drv_stat, u8 drv_err, u8 *sk, |
831 | u8 *asc, u8 *ascq, int verbose) | 831 | u8 *asc, u8 *ascq, int verbose) |
832 | { | 832 | { |
833 | int i; | 833 | int i; |
834 | 834 | ||
835 | /* Based on the 3ware driver translation table */ | 835 | /* Based on the 3ware driver translation table */ |
836 | static const unsigned char sense_table[][4] = { | 836 | static const unsigned char sense_table[][4] = { |
837 | /* BBD|ECC|ID|MAR */ | 837 | /* BBD|ECC|ID|MAR */ |
838 | {0xd1, ABORTED_COMMAND, 0x00, 0x00}, // Device busy Aborted command | 838 | {0xd1, ABORTED_COMMAND, 0x00, 0x00}, // Device busy Aborted command |
839 | /* BBD|ECC|ID */ | 839 | /* BBD|ECC|ID */ |
840 | {0xd0, ABORTED_COMMAND, 0x00, 0x00}, // Device busy Aborted command | 840 | {0xd0, ABORTED_COMMAND, 0x00, 0x00}, // Device busy Aborted command |
841 | /* ECC|MC|MARK */ | 841 | /* ECC|MC|MARK */ |
842 | {0x61, HARDWARE_ERROR, 0x00, 0x00}, // Device fault Hardware error | 842 | {0x61, HARDWARE_ERROR, 0x00, 0x00}, // Device fault Hardware error |
843 | /* ICRC|ABRT */ /* NB: ICRC & !ABRT is BBD */ | 843 | /* ICRC|ABRT */ /* NB: ICRC & !ABRT is BBD */ |
844 | {0x84, ABORTED_COMMAND, 0x47, 0x00}, // Data CRC error SCSI parity error | 844 | {0x84, ABORTED_COMMAND, 0x47, 0x00}, // Data CRC error SCSI parity error |
845 | /* MC|ID|ABRT|TRK0|MARK */ | 845 | /* MC|ID|ABRT|TRK0|MARK */ |
846 | {0x37, NOT_READY, 0x04, 0x00}, // Unit offline Not ready | 846 | {0x37, NOT_READY, 0x04, 0x00}, // Unit offline Not ready |
847 | /* MCR|MARK */ | 847 | /* MCR|MARK */ |
848 | {0x09, NOT_READY, 0x04, 0x00}, // Unrecovered disk error Not ready | 848 | {0x09, NOT_READY, 0x04, 0x00}, // Unrecovered disk error Not ready |
849 | /* Bad address mark */ | 849 | /* Bad address mark */ |
850 | {0x01, MEDIUM_ERROR, 0x13, 0x00}, // Address mark not found Address mark not found for data field | 850 | {0x01, MEDIUM_ERROR, 0x13, 0x00}, // Address mark not found Address mark not found for data field |
851 | /* TRK0 */ | 851 | /* TRK0 */ |
852 | {0x02, HARDWARE_ERROR, 0x00, 0x00}, // Track 0 not found Hardware error | 852 | {0x02, HARDWARE_ERROR, 0x00, 0x00}, // Track 0 not found Hardware error |
853 | /* Abort & !ICRC */ | 853 | /* Abort: 0x04 is not translated here, see below */ |
854 | {0x04, ABORTED_COMMAND, 0x00, 0x00}, // Aborted command Aborted command | ||
855 | /* Media change request */ | 854 | /* Media change request */ |
856 | {0x08, NOT_READY, 0x04, 0x00}, // Media change request FIXME: faking offline | 855 | {0x08, NOT_READY, 0x04, 0x00}, // Media change request FIXME: faking offline |
857 | /* SRV */ | 856 | /* SRV/IDNF */ |
858 | {0x10, ABORTED_COMMAND, 0x14, 0x00}, // ID not found Recorded entity not found | 857 | {0x10, ILLEGAL_REQUEST, 0x21, 0x00}, // ID not found Logical address out of range |
859 | /* Media change */ | 858 | /* MC */ |
860 | {0x08, NOT_READY, 0x04, 0x00}, // Media change FIXME: faking offline | 859 | {0x20, UNIT_ATTENTION, 0x28, 0x00}, // Media Changed Not ready to ready change, medium may have changed |
861 | /* ECC */ | 860 | /* ECC */ |
862 | {0x40, MEDIUM_ERROR, 0x11, 0x04}, // Uncorrectable ECC error Unrecovered read error | 861 | {0x40, MEDIUM_ERROR, 0x11, 0x04}, // Uncorrectable ECC error Unrecovered read error |
863 | /* BBD - block marked bad */ | 862 | /* BBD - block marked bad */ |
864 | {0x80, MEDIUM_ERROR, 0x11, 0x04}, // Block marked bad Medium error, unrecovered read error | 863 | {0x80, MEDIUM_ERROR, 0x11, 0x04}, // Block marked bad Medium error, unrecovered read error |
865 | {0xFF, 0xFF, 0xFF, 0xFF}, // END mark | 864 | {0xFF, 0xFF, 0xFF, 0xFF}, // END mark |
866 | }; | 865 | }; |
867 | static const unsigned char stat_table[][4] = { | 866 | static const unsigned char stat_table[][4] = { |
868 | /* Must be first because BUSY means no other bits valid */ | 867 | /* Must be first because BUSY means no other bits valid */ |
869 | {0x80, ABORTED_COMMAND, 0x47, 0x00}, // Busy, fake parity for now | 868 | {0x80, ABORTED_COMMAND, 0x47, 0x00}, // Busy, fake parity for now |
870 | {0x20, HARDWARE_ERROR, 0x00, 0x00}, // Device fault | 869 | {0x20, HARDWARE_ERROR, 0x44, 0x00}, // Device fault, internal target failure |
871 | {0x08, ABORTED_COMMAND, 0x47, 0x00}, // Timed out in xfer, fake parity for now | 870 | {0x08, ABORTED_COMMAND, 0x47, 0x00}, // Timed out in xfer, fake parity for now |
872 | {0x04, RECOVERED_ERROR, 0x11, 0x00}, // Recovered ECC error Medium error, recovered | 871 | {0x04, RECOVERED_ERROR, 0x11, 0x00}, // Recovered ECC error Medium error, recovered |
873 | {0xFF, 0xFF, 0xFF, 0xFF}, // END mark | 872 | {0xFF, 0xFF, 0xFF, 0xFF}, // END mark |
874 | }; | 873 | }; |
875 | 874 | ||
876 | /* | 875 | /* |
877 | * Is this an error we can process/parse | 876 | * Is this an error we can process/parse |
878 | */ | 877 | */ |
879 | if (drv_stat & ATA_BUSY) { | 878 | if (drv_stat & ATA_BUSY) { |
880 | drv_err = 0; /* Ignore the err bits, they're invalid */ | 879 | drv_err = 0; /* Ignore the err bits, they're invalid */ |
881 | } | 880 | } |
882 | 881 | ||
883 | if (drv_err) { | 882 | if (drv_err) { |
884 | /* Look for drv_err */ | 883 | /* Look for drv_err */ |
885 | for (i = 0; sense_table[i][0] != 0xFF; i++) { | 884 | for (i = 0; sense_table[i][0] != 0xFF; i++) { |
886 | /* Look for best matches first */ | 885 | /* Look for best matches first */ |
887 | if ((sense_table[i][0] & drv_err) == | 886 | if ((sense_table[i][0] & drv_err) == |
888 | sense_table[i][0]) { | 887 | sense_table[i][0]) { |
889 | *sk = sense_table[i][1]; | 888 | *sk = sense_table[i][1]; |
890 | *asc = sense_table[i][2]; | 889 | *asc = sense_table[i][2]; |
891 | *ascq = sense_table[i][3]; | 890 | *ascq = sense_table[i][3]; |
892 | goto translate_done; | 891 | goto translate_done; |
893 | } | 892 | } |
894 | } | 893 | } |
895 | /* No immediate match */ | ||
896 | if (verbose) | ||
897 | printk(KERN_WARNING "ata%u: no sense translation for " | ||
898 | "error 0x%02x\n", id, drv_err); | ||
899 | } | 894 | } |
900 | 895 | ||
901 | /* Fall back to interpreting status bits */ | 896 | /* |
897 | * Fall back to interpreting status bits. Note that if the drv_err | ||
898 | * has only the ABRT bit set, we decode drv_stat. ABRT by itself | ||
899 | * is not descriptive enough. | ||
900 | */ | ||
902 | for (i = 0; stat_table[i][0] != 0xFF; i++) { | 901 | for (i = 0; stat_table[i][0] != 0xFF; i++) { |
903 | if (stat_table[i][0] & drv_stat) { | 902 | if (stat_table[i][0] & drv_stat) { |
904 | *sk = stat_table[i][1]; | 903 | *sk = stat_table[i][1]; |
905 | *asc = stat_table[i][2]; | 904 | *asc = stat_table[i][2]; |
906 | *ascq = stat_table[i][3]; | 905 | *ascq = stat_table[i][3]; |
907 | goto translate_done; | 906 | goto translate_done; |
908 | } | 907 | } |
909 | } | 908 | } |
910 | /* No error? Undecoded? */ | ||
911 | if (verbose) | ||
912 | printk(KERN_WARNING "ata%u: no sense translation for " | ||
913 | "status: 0x%02x\n", id, drv_stat); | ||
914 | 909 | ||
915 | /* We need a sensible error return here, which is tricky, and one | 910 | /* |
916 | that won't cause people to do things like return a disk wrongly */ | 911 | * We need a sensible error return here, which is tricky, and one |
912 | * that won't cause people to do things like return a disk wrongly. | ||
913 | */ | ||
917 | *sk = ABORTED_COMMAND; | 914 | *sk = ABORTED_COMMAND; |
918 | *asc = 0x00; | 915 | *asc = 0x00; |
919 | *ascq = 0x00; | 916 | *ascq = 0x00; |
920 | 917 | ||
921 | translate_done: | 918 | translate_done: |
922 | if (verbose) | 919 | if (verbose) |
923 | printk(KERN_ERR "ata%u: translated ATA stat/err 0x%02x/%02x " | 920 | printk(KERN_ERR "ata%u: translated ATA stat/err 0x%02x/%02x " |
924 | "to SCSI SK/ASC/ASCQ 0x%x/%02x/%02x\n", | 921 | "to SCSI SK/ASC/ASCQ 0x%x/%02x/%02x\n", |
925 | id, drv_stat, drv_err, *sk, *asc, *ascq); | 922 | id, drv_stat, drv_err, *sk, *asc, *ascq); |
926 | return; | 923 | return; |
927 | } | 924 | } |
928 | 925 | ||
929 | /* | 926 | /* |
930 | * ata_gen_passthru_sense - Generate check condition sense block. | 927 | * ata_gen_passthru_sense - Generate check condition sense block. |
931 | * @qc: Command that completed. | 928 | * @qc: Command that completed. |
932 | * | 929 | * |
933 | * This function is specific to the ATA descriptor format sense | 930 | * This function is specific to the ATA descriptor format sense |
934 | * block specified for the ATA pass through commands. Regardless | 931 | * block specified for the ATA pass through commands. Regardless |
935 | * of whether the command errored or not, return a sense | 932 | * of whether the command errored or not, return a sense |
936 | * block. Copy all controller registers into the sense | 933 | * block. Copy all controller registers into the sense |
937 | * block. If there was no error, we get the request from an ATA | 934 | * block. If there was no error, we get the request from an ATA |
938 | * passthrough command, so we use the following sense data: | 935 | * passthrough command, so we use the following sense data: |
939 | * sk = RECOVERED ERROR | 936 | * sk = RECOVERED ERROR |
940 | * asc,ascq = ATA PASS-THROUGH INFORMATION AVAILABLE | 937 | * asc,ascq = ATA PASS-THROUGH INFORMATION AVAILABLE |
941 | * | 938 | * |
942 | * | 939 | * |
943 | * LOCKING: | 940 | * LOCKING: |
944 | * None. | 941 | * None. |
945 | */ | 942 | */ |
946 | static void ata_gen_passthru_sense(struct ata_queued_cmd *qc) | 943 | static void ata_gen_passthru_sense(struct ata_queued_cmd *qc) |
947 | { | 944 | { |
948 | struct scsi_cmnd *cmd = qc->scsicmd; | 945 | struct scsi_cmnd *cmd = qc->scsicmd; |
949 | struct ata_taskfile *tf = &qc->result_tf; | 946 | struct ata_taskfile *tf = &qc->result_tf; |
950 | unsigned char *sb = cmd->sense_buffer; | 947 | unsigned char *sb = cmd->sense_buffer; |
951 | unsigned char *desc = sb + 8; | 948 | unsigned char *desc = sb + 8; |
952 | int verbose = qc->ap->ops->error_handler == NULL; | 949 | int verbose = qc->ap->ops->error_handler == NULL; |
953 | 950 | ||
954 | memset(sb, 0, SCSI_SENSE_BUFFERSIZE); | 951 | memset(sb, 0, SCSI_SENSE_BUFFERSIZE); |
955 | 952 | ||
956 | cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION; | 953 | cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION; |
957 | 954 | ||
958 | /* | 955 | /* |
959 | * Use ata_to_sense_error() to map status register bits | 956 | * Use ata_to_sense_error() to map status register bits |
960 | * onto sense key, asc & ascq. | 957 | * onto sense key, asc & ascq. |
961 | */ | 958 | */ |
962 | if (qc->err_mask || | 959 | if (qc->err_mask || |
963 | tf->command & (ATA_BUSY | ATA_DF | ATA_ERR | ATA_DRQ)) { | 960 | tf->command & (ATA_BUSY | ATA_DF | ATA_ERR | ATA_DRQ)) { |
964 | ata_to_sense_error(qc->ap->print_id, tf->command, tf->feature, | 961 | ata_to_sense_error(qc->ap->print_id, tf->command, tf->feature, |
965 | &sb[1], &sb[2], &sb[3], verbose); | 962 | &sb[1], &sb[2], &sb[3], verbose); |
966 | sb[1] &= 0x0f; | 963 | sb[1] &= 0x0f; |
967 | } else { | 964 | } else { |
968 | sb[1] = RECOVERED_ERROR; | 965 | sb[1] = RECOVERED_ERROR; |
969 | sb[2] = 0; | 966 | sb[2] = 0; |
970 | sb[3] = 0x1D; | 967 | sb[3] = 0x1D; |
971 | } | 968 | } |
972 | 969 | ||
973 | /* | 970 | /* |
974 | * Sense data is current and format is descriptor. | 971 | * Sense data is current and format is descriptor. |
975 | */ | 972 | */ |
976 | sb[0] = 0x72; | 973 | sb[0] = 0x72; |
977 | 974 | ||
978 | desc[0] = 0x09; | 975 | desc[0] = 0x09; |
979 | 976 | ||
980 | /* set length of additional sense data */ | 977 | /* set length of additional sense data */ |
981 | sb[7] = 14; | 978 | sb[7] = 14; |
982 | desc[1] = 12; | 979 | desc[1] = 12; |
983 | 980 | ||
984 | /* | 981 | /* |
985 | * Copy registers into sense buffer. | 982 | * Copy registers into sense buffer. |
986 | */ | 983 | */ |
987 | desc[2] = 0x00; | 984 | desc[2] = 0x00; |
988 | desc[3] = tf->feature; /* == error reg */ | 985 | desc[3] = tf->feature; /* == error reg */ |
989 | desc[5] = tf->nsect; | 986 | desc[5] = tf->nsect; |
990 | desc[7] = tf->lbal; | 987 | desc[7] = tf->lbal; |
991 | desc[9] = tf->lbam; | 988 | desc[9] = tf->lbam; |
992 | desc[11] = tf->lbah; | 989 | desc[11] = tf->lbah; |
993 | desc[12] = tf->device; | 990 | desc[12] = tf->device; |
994 | desc[13] = tf->command; /* == status reg */ | 991 | desc[13] = tf->command; /* == status reg */ |
995 | 992 | ||
996 | /* | 993 | /* |
997 | * Fill in Extend bit, and the high order bytes | 994 | * Fill in Extend bit, and the high order bytes |
998 | * if applicable. | 995 | * if applicable. |
999 | */ | 996 | */ |
1000 | if (tf->flags & ATA_TFLAG_LBA48) { | 997 | if (tf->flags & ATA_TFLAG_LBA48) { |
1001 | desc[2] |= 0x01; | 998 | desc[2] |= 0x01; |
1002 | desc[4] = tf->hob_nsect; | 999 | desc[4] = tf->hob_nsect; |
1003 | desc[6] = tf->hob_lbal; | 1000 | desc[6] = tf->hob_lbal; |
1004 | desc[8] = tf->hob_lbam; | 1001 | desc[8] = tf->hob_lbam; |
1005 | desc[10] = tf->hob_lbah; | 1002 | desc[10] = tf->hob_lbah; |
1006 | } | 1003 | } |
1007 | } | 1004 | } |
1008 | 1005 | ||
1009 | /** | 1006 | /** |
1010 | * ata_gen_ata_sense - generate a SCSI fixed sense block | 1007 | * ata_gen_ata_sense - generate a SCSI fixed sense block |
1011 | * @qc: Command that we are erroring out | 1008 | * @qc: Command that we are erroring out |
1012 | * | 1009 | * |
1013 | * Generate sense block for a failed ATA command @qc. Descriptor | 1010 | * Generate sense block for a failed ATA command @qc. Descriptor |
1014 | * format is used to accommodate LBA48 block address. | 1011 | * format is used to accommodate LBA48 block address. |
1015 | * | 1012 | * |
1016 | * LOCKING: | 1013 | * LOCKING: |
1017 | * None. | 1014 | * None. |
1018 | */ | 1015 | */ |
1019 | static void ata_gen_ata_sense(struct ata_queued_cmd *qc) | 1016 | static void ata_gen_ata_sense(struct ata_queued_cmd *qc) |
1020 | { | 1017 | { |
1021 | struct ata_device *dev = qc->dev; | 1018 | struct ata_device *dev = qc->dev; |
1022 | struct scsi_cmnd *cmd = qc->scsicmd; | 1019 | struct scsi_cmnd *cmd = qc->scsicmd; |
1023 | struct ata_taskfile *tf = &qc->result_tf; | 1020 | struct ata_taskfile *tf = &qc->result_tf; |
1024 | unsigned char *sb = cmd->sense_buffer; | 1021 | unsigned char *sb = cmd->sense_buffer; |
1025 | unsigned char *desc = sb + 8; | 1022 | unsigned char *desc = sb + 8; |
1026 | int verbose = qc->ap->ops->error_handler == NULL; | 1023 | int verbose = qc->ap->ops->error_handler == NULL; |
1027 | u64 block; | 1024 | u64 block; |
1028 | 1025 | ||
1029 | memset(sb, 0, SCSI_SENSE_BUFFERSIZE); | 1026 | memset(sb, 0, SCSI_SENSE_BUFFERSIZE); |
1030 | 1027 | ||
1031 | cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION; | 1028 | cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION; |
1032 | 1029 | ||
1033 | /* sense data is current and format is descriptor */ | 1030 | /* sense data is current and format is descriptor */ |
1034 | sb[0] = 0x72; | 1031 | sb[0] = 0x72; |
1035 | 1032 | ||
1036 | /* Use ata_to_sense_error() to map status register bits | 1033 | /* Use ata_to_sense_error() to map status register bits |
1037 | * onto sense key, asc & ascq. | 1034 | * onto sense key, asc & ascq. |
1038 | */ | 1035 | */ |
1039 | if (qc->err_mask || | 1036 | if (qc->err_mask || |
1040 | tf->command & (ATA_BUSY | ATA_DF | ATA_ERR | ATA_DRQ)) { | 1037 | tf->command & (ATA_BUSY | ATA_DF | ATA_ERR | ATA_DRQ)) { |
1041 | ata_to_sense_error(qc->ap->print_id, tf->command, tf->feature, | 1038 | ata_to_sense_error(qc->ap->print_id, tf->command, tf->feature, |
1042 | &sb[1], &sb[2], &sb[3], verbose); | 1039 | &sb[1], &sb[2], &sb[3], verbose); |
1043 | sb[1] &= 0x0f; | 1040 | sb[1] &= 0x0f; |
1044 | } | 1041 | } |
1045 | 1042 | ||
1046 | block = ata_tf_read_block(&qc->result_tf, dev); | 1043 | block = ata_tf_read_block(&qc->result_tf, dev); |
1047 | 1044 | ||
1048 | /* information sense data descriptor */ | 1045 | /* information sense data descriptor */ |
1049 | sb[7] = 12; | 1046 | sb[7] = 12; |
1050 | desc[0] = 0x00; | 1047 | desc[0] = 0x00; |
1051 | desc[1] = 10; | 1048 | desc[1] = 10; |
1052 | 1049 | ||
1053 | desc[2] |= 0x80; /* valid */ | 1050 | desc[2] |= 0x80; /* valid */ |
1054 | desc[6] = block >> 40; | 1051 | desc[6] = block >> 40; |
1055 | desc[7] = block >> 32; | 1052 | desc[7] = block >> 32; |
1056 | desc[8] = block >> 24; | 1053 | desc[8] = block >> 24; |
1057 | desc[9] = block >> 16; | 1054 | desc[9] = block >> 16; |
1058 | desc[10] = block >> 8; | 1055 | desc[10] = block >> 8; |
1059 | desc[11] = block; | 1056 | desc[11] = block; |
1060 | } | 1057 | } |
1061 | 1058 | ||
1062 | static void ata_scsi_sdev_config(struct scsi_device *sdev) | 1059 | static void ata_scsi_sdev_config(struct scsi_device *sdev) |
1063 | { | 1060 | { |
1064 | sdev->use_10_for_rw = 1; | 1061 | sdev->use_10_for_rw = 1; |
1065 | sdev->use_10_for_ms = 1; | 1062 | sdev->use_10_for_ms = 1; |
1066 | sdev->no_report_opcodes = 1; | 1063 | sdev->no_report_opcodes = 1; |
1067 | sdev->no_write_same = 1; | 1064 | sdev->no_write_same = 1; |
1068 | 1065 | ||
1069 | /* Schedule policy is determined by ->qc_defer() callback and | 1066 | /* Schedule policy is determined by ->qc_defer() callback and |
1070 | * it needs to see every deferred qc. Set dev_blocked to 1 to | 1067 | * it needs to see every deferred qc. Set dev_blocked to 1 to |
1071 | * prevent SCSI midlayer from automatically deferring | 1068 | * prevent SCSI midlayer from automatically deferring |
1072 | * requests. | 1069 | * requests. |
1073 | */ | 1070 | */ |
1074 | sdev->max_device_blocked = 1; | 1071 | sdev->max_device_blocked = 1; |
1075 | } | 1072 | } |
1076 | 1073 | ||
1077 | /** | 1074 | /** |
1078 | * atapi_drain_needed - Check whether data transfer may overflow | 1075 | * atapi_drain_needed - Check whether data transfer may overflow |
1079 | * @rq: request to be checked | 1076 | * @rq: request to be checked |
1080 | * | 1077 | * |
1081 | * ATAPI commands which transfer variable length data to host | 1078 | * ATAPI commands which transfer variable length data to host |
1082 | * might overflow due to application error or hardare bug. This | 1079 | * might overflow due to application error or hardare bug. This |
1083 | * function checks whether overflow should be drained and ignored | 1080 | * function checks whether overflow should be drained and ignored |
1084 | * for @request. | 1081 | * for @request. |
1085 | * | 1082 | * |
1086 | * LOCKING: | 1083 | * LOCKING: |
1087 | * None. | 1084 | * None. |
1088 | * | 1085 | * |
1089 | * RETURNS: | 1086 | * RETURNS: |
1090 | * 1 if ; otherwise, 0. | 1087 | * 1 if ; otherwise, 0. |
1091 | */ | 1088 | */ |
1092 | static int atapi_drain_needed(struct request *rq) | 1089 | static int atapi_drain_needed(struct request *rq) |
1093 | { | 1090 | { |
1094 | if (likely(rq->cmd_type != REQ_TYPE_BLOCK_PC)) | 1091 | if (likely(rq->cmd_type != REQ_TYPE_BLOCK_PC)) |
1095 | return 0; | 1092 | return 0; |
1096 | 1093 | ||
1097 | if (!blk_rq_bytes(rq) || (rq->cmd_flags & REQ_WRITE)) | 1094 | if (!blk_rq_bytes(rq) || (rq->cmd_flags & REQ_WRITE)) |
1098 | return 0; | 1095 | return 0; |
1099 | 1096 | ||
1100 | return atapi_cmd_type(rq->cmd[0]) == ATAPI_MISC; | 1097 | return atapi_cmd_type(rq->cmd[0]) == ATAPI_MISC; |
1101 | } | 1098 | } |
1102 | 1099 | ||
1103 | static int ata_scsi_dev_config(struct scsi_device *sdev, | 1100 | static int ata_scsi_dev_config(struct scsi_device *sdev, |
1104 | struct ata_device *dev) | 1101 | struct ata_device *dev) |
1105 | { | 1102 | { |
1106 | struct request_queue *q = sdev->request_queue; | 1103 | struct request_queue *q = sdev->request_queue; |
1107 | 1104 | ||
1108 | if (!ata_id_has_unload(dev->id)) | 1105 | if (!ata_id_has_unload(dev->id)) |
1109 | dev->flags |= ATA_DFLAG_NO_UNLOAD; | 1106 | dev->flags |= ATA_DFLAG_NO_UNLOAD; |
1110 | 1107 | ||
1111 | /* configure max sectors */ | 1108 | /* configure max sectors */ |
1112 | blk_queue_max_hw_sectors(q, dev->max_sectors); | 1109 | blk_queue_max_hw_sectors(q, dev->max_sectors); |
1113 | 1110 | ||
1114 | if (dev->class == ATA_DEV_ATAPI) { | 1111 | if (dev->class == ATA_DEV_ATAPI) { |
1115 | void *buf; | 1112 | void *buf; |
1116 | 1113 | ||
1117 | sdev->sector_size = ATA_SECT_SIZE; | 1114 | sdev->sector_size = ATA_SECT_SIZE; |
1118 | 1115 | ||
1119 | /* set DMA padding */ | 1116 | /* set DMA padding */ |
1120 | blk_queue_update_dma_pad(q, ATA_DMA_PAD_SZ - 1); | 1117 | blk_queue_update_dma_pad(q, ATA_DMA_PAD_SZ - 1); |
1121 | 1118 | ||
1122 | /* configure draining */ | 1119 | /* configure draining */ |
1123 | buf = kmalloc(ATAPI_MAX_DRAIN, q->bounce_gfp | GFP_KERNEL); | 1120 | buf = kmalloc(ATAPI_MAX_DRAIN, q->bounce_gfp | GFP_KERNEL); |
1124 | if (!buf) { | 1121 | if (!buf) { |
1125 | ata_dev_err(dev, "drain buffer allocation failed\n"); | 1122 | ata_dev_err(dev, "drain buffer allocation failed\n"); |
1126 | return -ENOMEM; | 1123 | return -ENOMEM; |
1127 | } | 1124 | } |
1128 | 1125 | ||
1129 | blk_queue_dma_drain(q, atapi_drain_needed, buf, ATAPI_MAX_DRAIN); | 1126 | blk_queue_dma_drain(q, atapi_drain_needed, buf, ATAPI_MAX_DRAIN); |
1130 | } else { | 1127 | } else { |
1131 | sdev->sector_size = ata_id_logical_sector_size(dev->id); | 1128 | sdev->sector_size = ata_id_logical_sector_size(dev->id); |
1132 | sdev->manage_start_stop = 1; | 1129 | sdev->manage_start_stop = 1; |
1133 | } | 1130 | } |
1134 | 1131 | ||
1135 | /* | 1132 | /* |
1136 | * ata_pio_sectors() expects buffer for each sector to not cross | 1133 | * ata_pio_sectors() expects buffer for each sector to not cross |
1137 | * page boundary. Enforce it by requiring buffers to be sector | 1134 | * page boundary. Enforce it by requiring buffers to be sector |
1138 | * aligned, which works iff sector_size is not larger than | 1135 | * aligned, which works iff sector_size is not larger than |
1139 | * PAGE_SIZE. ATAPI devices also need the alignment as | 1136 | * PAGE_SIZE. ATAPI devices also need the alignment as |
1140 | * IDENTIFY_PACKET is executed as ATA_PROT_PIO. | 1137 | * IDENTIFY_PACKET is executed as ATA_PROT_PIO. |
1141 | */ | 1138 | */ |
1142 | if (sdev->sector_size > PAGE_SIZE) | 1139 | if (sdev->sector_size > PAGE_SIZE) |
1143 | ata_dev_warn(dev, | 1140 | ata_dev_warn(dev, |
1144 | "sector_size=%u > PAGE_SIZE, PIO may malfunction\n", | 1141 | "sector_size=%u > PAGE_SIZE, PIO may malfunction\n", |
1145 | sdev->sector_size); | 1142 | sdev->sector_size); |
1146 | 1143 | ||
1147 | blk_queue_update_dma_alignment(q, sdev->sector_size - 1); | 1144 | blk_queue_update_dma_alignment(q, sdev->sector_size - 1); |
1148 | 1145 | ||
1149 | if (dev->flags & ATA_DFLAG_AN) | 1146 | if (dev->flags & ATA_DFLAG_AN) |
1150 | set_bit(SDEV_EVT_MEDIA_CHANGE, sdev->supported_events); | 1147 | set_bit(SDEV_EVT_MEDIA_CHANGE, sdev->supported_events); |
1151 | 1148 | ||
1152 | if (dev->flags & ATA_DFLAG_NCQ) { | 1149 | if (dev->flags & ATA_DFLAG_NCQ) { |
1153 | int depth; | 1150 | int depth; |
1154 | 1151 | ||
1155 | depth = min(sdev->host->can_queue, ata_id_queue_depth(dev->id)); | 1152 | depth = min(sdev->host->can_queue, ata_id_queue_depth(dev->id)); |
1156 | depth = min(ATA_MAX_QUEUE - 1, depth); | 1153 | depth = min(ATA_MAX_QUEUE - 1, depth); |
1157 | scsi_adjust_queue_depth(sdev, MSG_SIMPLE_TAG, depth); | 1154 | scsi_adjust_queue_depth(sdev, MSG_SIMPLE_TAG, depth); |
1158 | } | 1155 | } |
1159 | 1156 | ||
1160 | blk_queue_flush_queueable(q, false); | 1157 | blk_queue_flush_queueable(q, false); |
1161 | 1158 | ||
1162 | dev->sdev = sdev; | 1159 | dev->sdev = sdev; |
1163 | return 0; | 1160 | return 0; |
1164 | } | 1161 | } |
1165 | 1162 | ||
1166 | /** | 1163 | /** |
1167 | * ata_scsi_slave_config - Set SCSI device attributes | 1164 | * ata_scsi_slave_config - Set SCSI device attributes |
1168 | * @sdev: SCSI device to examine | 1165 | * @sdev: SCSI device to examine |
1169 | * | 1166 | * |
1170 | * This is called before we actually start reading | 1167 | * This is called before we actually start reading |
1171 | * and writing to the device, to configure certain | 1168 | * and writing to the device, to configure certain |
1172 | * SCSI mid-layer behaviors. | 1169 | * SCSI mid-layer behaviors. |
1173 | * | 1170 | * |
1174 | * LOCKING: | 1171 | * LOCKING: |
1175 | * Defined by SCSI layer. We don't really care. | 1172 | * Defined by SCSI layer. We don't really care. |
1176 | */ | 1173 | */ |
1177 | 1174 | ||
1178 | int ata_scsi_slave_config(struct scsi_device *sdev) | 1175 | int ata_scsi_slave_config(struct scsi_device *sdev) |
1179 | { | 1176 | { |
1180 | struct ata_port *ap = ata_shost_to_port(sdev->host); | 1177 | struct ata_port *ap = ata_shost_to_port(sdev->host); |
1181 | struct ata_device *dev = __ata_scsi_find_dev(ap, sdev); | 1178 | struct ata_device *dev = __ata_scsi_find_dev(ap, sdev); |
1182 | int rc = 0; | 1179 | int rc = 0; |
1183 | 1180 | ||
1184 | ata_scsi_sdev_config(sdev); | 1181 | ata_scsi_sdev_config(sdev); |
1185 | 1182 | ||
1186 | if (dev) | 1183 | if (dev) |
1187 | rc = ata_scsi_dev_config(sdev, dev); | 1184 | rc = ata_scsi_dev_config(sdev, dev); |
1188 | 1185 | ||
1189 | return rc; | 1186 | return rc; |
1190 | } | 1187 | } |
1191 | 1188 | ||
1192 | /** | 1189 | /** |
1193 | * ata_scsi_slave_destroy - SCSI device is about to be destroyed | 1190 | * ata_scsi_slave_destroy - SCSI device is about to be destroyed |
1194 | * @sdev: SCSI device to be destroyed | 1191 | * @sdev: SCSI device to be destroyed |
1195 | * | 1192 | * |
1196 | * @sdev is about to be destroyed for hot/warm unplugging. If | 1193 | * @sdev is about to be destroyed for hot/warm unplugging. If |
1197 | * this unplugging was initiated by libata as indicated by NULL | 1194 | * this unplugging was initiated by libata as indicated by NULL |
1198 | * dev->sdev, this function doesn't have to do anything. | 1195 | * dev->sdev, this function doesn't have to do anything. |
1199 | * Otherwise, SCSI layer initiated warm-unplug is in progress. | 1196 | * Otherwise, SCSI layer initiated warm-unplug is in progress. |
1200 | * Clear dev->sdev, schedule the device for ATA detach and invoke | 1197 | * Clear dev->sdev, schedule the device for ATA detach and invoke |
1201 | * EH. | 1198 | * EH. |
1202 | * | 1199 | * |
1203 | * LOCKING: | 1200 | * LOCKING: |
1204 | * Defined by SCSI layer. We don't really care. | 1201 | * Defined by SCSI layer. We don't really care. |
1205 | */ | 1202 | */ |
1206 | void ata_scsi_slave_destroy(struct scsi_device *sdev) | 1203 | void ata_scsi_slave_destroy(struct scsi_device *sdev) |
1207 | { | 1204 | { |
1208 | struct ata_port *ap = ata_shost_to_port(sdev->host); | 1205 | struct ata_port *ap = ata_shost_to_port(sdev->host); |
1209 | struct request_queue *q = sdev->request_queue; | 1206 | struct request_queue *q = sdev->request_queue; |
1210 | unsigned long flags; | 1207 | unsigned long flags; |
1211 | struct ata_device *dev; | 1208 | struct ata_device *dev; |
1212 | 1209 | ||
1213 | if (!ap->ops->error_handler) | 1210 | if (!ap->ops->error_handler) |
1214 | return; | 1211 | return; |
1215 | 1212 | ||
1216 | spin_lock_irqsave(ap->lock, flags); | 1213 | spin_lock_irqsave(ap->lock, flags); |
1217 | dev = __ata_scsi_find_dev(ap, sdev); | 1214 | dev = __ata_scsi_find_dev(ap, sdev); |
1218 | if (dev && dev->sdev) { | 1215 | if (dev && dev->sdev) { |
1219 | /* SCSI device already in CANCEL state, no need to offline it */ | 1216 | /* SCSI device already in CANCEL state, no need to offline it */ |
1220 | dev->sdev = NULL; | 1217 | dev->sdev = NULL; |
1221 | dev->flags |= ATA_DFLAG_DETACH; | 1218 | dev->flags |= ATA_DFLAG_DETACH; |
1222 | ata_port_schedule_eh(ap); | 1219 | ata_port_schedule_eh(ap); |
1223 | } | 1220 | } |
1224 | spin_unlock_irqrestore(ap->lock, flags); | 1221 | spin_unlock_irqrestore(ap->lock, flags); |
1225 | 1222 | ||
1226 | kfree(q->dma_drain_buffer); | 1223 | kfree(q->dma_drain_buffer); |
1227 | q->dma_drain_buffer = NULL; | 1224 | q->dma_drain_buffer = NULL; |
1228 | q->dma_drain_size = 0; | 1225 | q->dma_drain_size = 0; |
1229 | } | 1226 | } |
1230 | 1227 | ||
1231 | /** | 1228 | /** |
1232 | * __ata_change_queue_depth - helper for ata_scsi_change_queue_depth | 1229 | * __ata_change_queue_depth - helper for ata_scsi_change_queue_depth |
1233 | * @ap: ATA port to which the device change the queue depth | 1230 | * @ap: ATA port to which the device change the queue depth |
1234 | * @sdev: SCSI device to configure queue depth for | 1231 | * @sdev: SCSI device to configure queue depth for |
1235 | * @queue_depth: new queue depth | 1232 | * @queue_depth: new queue depth |
1236 | * @reason: calling context | 1233 | * @reason: calling context |
1237 | * | 1234 | * |
1238 | * libsas and libata have different approaches for associating a sdev to | 1235 | * libsas and libata have different approaches for associating a sdev to |
1239 | * its ata_port. | 1236 | * its ata_port. |
1240 | * | 1237 | * |
1241 | */ | 1238 | */ |
1242 | int __ata_change_queue_depth(struct ata_port *ap, struct scsi_device *sdev, | 1239 | int __ata_change_queue_depth(struct ata_port *ap, struct scsi_device *sdev, |
1243 | int queue_depth, int reason) | 1240 | int queue_depth, int reason) |
1244 | { | 1241 | { |
1245 | struct ata_device *dev; | 1242 | struct ata_device *dev; |
1246 | unsigned long flags; | 1243 | unsigned long flags; |
1247 | 1244 | ||
1248 | if (reason != SCSI_QDEPTH_DEFAULT) | 1245 | if (reason != SCSI_QDEPTH_DEFAULT) |
1249 | return -EOPNOTSUPP; | 1246 | return -EOPNOTSUPP; |
1250 | 1247 | ||
1251 | if (queue_depth < 1 || queue_depth == sdev->queue_depth) | 1248 | if (queue_depth < 1 || queue_depth == sdev->queue_depth) |
1252 | return sdev->queue_depth; | 1249 | return sdev->queue_depth; |
1253 | 1250 | ||
1254 | dev = ata_scsi_find_dev(ap, sdev); | 1251 | dev = ata_scsi_find_dev(ap, sdev); |
1255 | if (!dev || !ata_dev_enabled(dev)) | 1252 | if (!dev || !ata_dev_enabled(dev)) |
1256 | return sdev->queue_depth; | 1253 | return sdev->queue_depth; |
1257 | 1254 | ||
1258 | /* NCQ enabled? */ | 1255 | /* NCQ enabled? */ |
1259 | spin_lock_irqsave(ap->lock, flags); | 1256 | spin_lock_irqsave(ap->lock, flags); |
1260 | dev->flags &= ~ATA_DFLAG_NCQ_OFF; | 1257 | dev->flags &= ~ATA_DFLAG_NCQ_OFF; |
1261 | if (queue_depth == 1 || !ata_ncq_enabled(dev)) { | 1258 | if (queue_depth == 1 || !ata_ncq_enabled(dev)) { |
1262 | dev->flags |= ATA_DFLAG_NCQ_OFF; | 1259 | dev->flags |= ATA_DFLAG_NCQ_OFF; |
1263 | queue_depth = 1; | 1260 | queue_depth = 1; |
1264 | } | 1261 | } |
1265 | spin_unlock_irqrestore(ap->lock, flags); | 1262 | spin_unlock_irqrestore(ap->lock, flags); |
1266 | 1263 | ||
1267 | /* limit and apply queue depth */ | 1264 | /* limit and apply queue depth */ |
1268 | queue_depth = min(queue_depth, sdev->host->can_queue); | 1265 | queue_depth = min(queue_depth, sdev->host->can_queue); |
1269 | queue_depth = min(queue_depth, ata_id_queue_depth(dev->id)); | 1266 | queue_depth = min(queue_depth, ata_id_queue_depth(dev->id)); |
1270 | queue_depth = min(queue_depth, ATA_MAX_QUEUE - 1); | 1267 | queue_depth = min(queue_depth, ATA_MAX_QUEUE - 1); |
1271 | 1268 | ||
1272 | if (sdev->queue_depth == queue_depth) | 1269 | if (sdev->queue_depth == queue_depth) |
1273 | return -EINVAL; | 1270 | return -EINVAL; |
1274 | 1271 | ||
1275 | scsi_adjust_queue_depth(sdev, MSG_SIMPLE_TAG, queue_depth); | 1272 | scsi_adjust_queue_depth(sdev, MSG_SIMPLE_TAG, queue_depth); |
1276 | return queue_depth; | 1273 | return queue_depth; |
1277 | } | 1274 | } |
1278 | 1275 | ||
1279 | /** | 1276 | /** |
1280 | * ata_scsi_change_queue_depth - SCSI callback for queue depth config | 1277 | * ata_scsi_change_queue_depth - SCSI callback for queue depth config |
1281 | * @sdev: SCSI device to configure queue depth for | 1278 | * @sdev: SCSI device to configure queue depth for |
1282 | * @queue_depth: new queue depth | 1279 | * @queue_depth: new queue depth |
1283 | * @reason: calling context | 1280 | * @reason: calling context |
1284 | * | 1281 | * |
1285 | * This is libata standard hostt->change_queue_depth callback. | 1282 | * This is libata standard hostt->change_queue_depth callback. |
1286 | * SCSI will call into this callback when user tries to set queue | 1283 | * SCSI will call into this callback when user tries to set queue |
1287 | * depth via sysfs. | 1284 | * depth via sysfs. |
1288 | * | 1285 | * |
1289 | * LOCKING: | 1286 | * LOCKING: |
1290 | * SCSI layer (we don't care) | 1287 | * SCSI layer (we don't care) |
1291 | * | 1288 | * |
1292 | * RETURNS: | 1289 | * RETURNS: |
1293 | * Newly configured queue depth. | 1290 | * Newly configured queue depth. |
1294 | */ | 1291 | */ |
1295 | int ata_scsi_change_queue_depth(struct scsi_device *sdev, int queue_depth, | 1292 | int ata_scsi_change_queue_depth(struct scsi_device *sdev, int queue_depth, |
1296 | int reason) | 1293 | int reason) |
1297 | { | 1294 | { |
1298 | struct ata_port *ap = ata_shost_to_port(sdev->host); | 1295 | struct ata_port *ap = ata_shost_to_port(sdev->host); |
1299 | 1296 | ||
1300 | return __ata_change_queue_depth(ap, sdev, queue_depth, reason); | 1297 | return __ata_change_queue_depth(ap, sdev, queue_depth, reason); |
1301 | } | 1298 | } |
1302 | 1299 | ||
1303 | /** | 1300 | /** |
1304 | * ata_scsi_start_stop_xlat - Translate SCSI START STOP UNIT command | 1301 | * ata_scsi_start_stop_xlat - Translate SCSI START STOP UNIT command |
1305 | * @qc: Storage for translated ATA taskfile | 1302 | * @qc: Storage for translated ATA taskfile |
1306 | * | 1303 | * |
1307 | * Sets up an ATA taskfile to issue STANDBY (to stop) or READ VERIFY | 1304 | * Sets up an ATA taskfile to issue STANDBY (to stop) or READ VERIFY |
1308 | * (to start). Perhaps these commands should be preceded by | 1305 | * (to start). Perhaps these commands should be preceded by |
1309 | * CHECK POWER MODE to see what power mode the device is already in. | 1306 | * CHECK POWER MODE to see what power mode the device is already in. |
1310 | * [See SAT revision 5 at www.t10.org] | 1307 | * [See SAT revision 5 at www.t10.org] |
1311 | * | 1308 | * |
1312 | * LOCKING: | 1309 | * LOCKING: |
1313 | * spin_lock_irqsave(host lock) | 1310 | * spin_lock_irqsave(host lock) |
1314 | * | 1311 | * |
1315 | * RETURNS: | 1312 | * RETURNS: |
1316 | * Zero on success, non-zero on error. | 1313 | * Zero on success, non-zero on error. |
1317 | */ | 1314 | */ |
1318 | static unsigned int ata_scsi_start_stop_xlat(struct ata_queued_cmd *qc) | 1315 | static unsigned int ata_scsi_start_stop_xlat(struct ata_queued_cmd *qc) |
1319 | { | 1316 | { |
1320 | struct scsi_cmnd *scmd = qc->scsicmd; | 1317 | struct scsi_cmnd *scmd = qc->scsicmd; |
1321 | struct ata_taskfile *tf = &qc->tf; | 1318 | struct ata_taskfile *tf = &qc->tf; |
1322 | const u8 *cdb = scmd->cmnd; | 1319 | const u8 *cdb = scmd->cmnd; |
1323 | 1320 | ||
1324 | if (scmd->cmd_len < 5) | 1321 | if (scmd->cmd_len < 5) |
1325 | goto invalid_fld; | 1322 | goto invalid_fld; |
1326 | 1323 | ||
1327 | tf->flags |= ATA_TFLAG_DEVICE | ATA_TFLAG_ISADDR; | 1324 | tf->flags |= ATA_TFLAG_DEVICE | ATA_TFLAG_ISADDR; |
1328 | tf->protocol = ATA_PROT_NODATA; | 1325 | tf->protocol = ATA_PROT_NODATA; |
1329 | if (cdb[1] & 0x1) { | 1326 | if (cdb[1] & 0x1) { |
1330 | ; /* ignore IMMED bit, violates sat-r05 */ | 1327 | ; /* ignore IMMED bit, violates sat-r05 */ |
1331 | } | 1328 | } |
1332 | if (cdb[4] & 0x2) | 1329 | if (cdb[4] & 0x2) |
1333 | goto invalid_fld; /* LOEJ bit set not supported */ | 1330 | goto invalid_fld; /* LOEJ bit set not supported */ |
1334 | if (((cdb[4] >> 4) & 0xf) != 0) | 1331 | if (((cdb[4] >> 4) & 0xf) != 0) |
1335 | goto invalid_fld; /* power conditions not supported */ | 1332 | goto invalid_fld; /* power conditions not supported */ |
1336 | 1333 | ||
1337 | if (cdb[4] & 0x1) { | 1334 | if (cdb[4] & 0x1) { |
1338 | tf->nsect = 1; /* 1 sector, lba=0 */ | 1335 | tf->nsect = 1; /* 1 sector, lba=0 */ |
1339 | 1336 | ||
1340 | if (qc->dev->flags & ATA_DFLAG_LBA) { | 1337 | if (qc->dev->flags & ATA_DFLAG_LBA) { |
1341 | tf->flags |= ATA_TFLAG_LBA; | 1338 | tf->flags |= ATA_TFLAG_LBA; |
1342 | 1339 | ||
1343 | tf->lbah = 0x0; | 1340 | tf->lbah = 0x0; |
1344 | tf->lbam = 0x0; | 1341 | tf->lbam = 0x0; |
1345 | tf->lbal = 0x0; | 1342 | tf->lbal = 0x0; |
1346 | tf->device |= ATA_LBA; | 1343 | tf->device |= ATA_LBA; |
1347 | } else { | 1344 | } else { |
1348 | /* CHS */ | 1345 | /* CHS */ |
1349 | tf->lbal = 0x1; /* sect */ | 1346 | tf->lbal = 0x1; /* sect */ |
1350 | tf->lbam = 0x0; /* cyl low */ | 1347 | tf->lbam = 0x0; /* cyl low */ |
1351 | tf->lbah = 0x0; /* cyl high */ | 1348 | tf->lbah = 0x0; /* cyl high */ |
1352 | } | 1349 | } |
1353 | 1350 | ||
1354 | tf->command = ATA_CMD_VERIFY; /* READ VERIFY */ | 1351 | tf->command = ATA_CMD_VERIFY; /* READ VERIFY */ |
1355 | } else { | 1352 | } else { |
1356 | /* Some odd clown BIOSen issue spindown on power off (ACPI S4 | 1353 | /* Some odd clown BIOSen issue spindown on power off (ACPI S4 |
1357 | * or S5) causing some drives to spin up and down again. | 1354 | * or S5) causing some drives to spin up and down again. |
1358 | */ | 1355 | */ |
1359 | if ((qc->ap->flags & ATA_FLAG_NO_POWEROFF_SPINDOWN) && | 1356 | if ((qc->ap->flags & ATA_FLAG_NO_POWEROFF_SPINDOWN) && |
1360 | system_state == SYSTEM_POWER_OFF) | 1357 | system_state == SYSTEM_POWER_OFF) |
1361 | goto skip; | 1358 | goto skip; |
1362 | 1359 | ||
1363 | if ((qc->ap->flags & ATA_FLAG_NO_HIBERNATE_SPINDOWN) && | 1360 | if ((qc->ap->flags & ATA_FLAG_NO_HIBERNATE_SPINDOWN) && |
1364 | system_entering_hibernation()) | 1361 | system_entering_hibernation()) |
1365 | goto skip; | 1362 | goto skip; |
1366 | 1363 | ||
1367 | /* Issue ATA STANDBY IMMEDIATE command */ | 1364 | /* Issue ATA STANDBY IMMEDIATE command */ |
1368 | tf->command = ATA_CMD_STANDBYNOW1; | 1365 | tf->command = ATA_CMD_STANDBYNOW1; |
1369 | } | 1366 | } |
1370 | 1367 | ||
1371 | /* | 1368 | /* |
1372 | * Standby and Idle condition timers could be implemented but that | 1369 | * Standby and Idle condition timers could be implemented but that |
1373 | * would require libata to implement the Power condition mode page | 1370 | * would require libata to implement the Power condition mode page |
1374 | * and allow the user to change it. Changing mode pages requires | 1371 | * and allow the user to change it. Changing mode pages requires |
1375 | * MODE SELECT to be implemented. | 1372 | * MODE SELECT to be implemented. |
1376 | */ | 1373 | */ |
1377 | 1374 | ||
1378 | return 0; | 1375 | return 0; |
1379 | 1376 | ||
1380 | invalid_fld: | 1377 | invalid_fld: |
1381 | ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x24, 0x0); | 1378 | ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x24, 0x0); |
1382 | /* "Invalid field in cbd" */ | 1379 | /* "Invalid field in cbd" */ |
1383 | return 1; | 1380 | return 1; |
1384 | skip: | 1381 | skip: |
1385 | scmd->result = SAM_STAT_GOOD; | 1382 | scmd->result = SAM_STAT_GOOD; |
1386 | return 1; | 1383 | return 1; |
1387 | } | 1384 | } |
1388 | 1385 | ||
1389 | 1386 | ||
1390 | /** | 1387 | /** |
1391 | * ata_scsi_flush_xlat - Translate SCSI SYNCHRONIZE CACHE command | 1388 | * ata_scsi_flush_xlat - Translate SCSI SYNCHRONIZE CACHE command |
1392 | * @qc: Storage for translated ATA taskfile | 1389 | * @qc: Storage for translated ATA taskfile |
1393 | * | 1390 | * |
1394 | * Sets up an ATA taskfile to issue FLUSH CACHE or | 1391 | * Sets up an ATA taskfile to issue FLUSH CACHE or |
1395 | * FLUSH CACHE EXT. | 1392 | * FLUSH CACHE EXT. |
1396 | * | 1393 | * |
1397 | * LOCKING: | 1394 | * LOCKING: |
1398 | * spin_lock_irqsave(host lock) | 1395 | * spin_lock_irqsave(host lock) |
1399 | * | 1396 | * |
1400 | * RETURNS: | 1397 | * RETURNS: |
1401 | * Zero on success, non-zero on error. | 1398 | * Zero on success, non-zero on error. |
1402 | */ | 1399 | */ |
1403 | static unsigned int ata_scsi_flush_xlat(struct ata_queued_cmd *qc) | 1400 | static unsigned int ata_scsi_flush_xlat(struct ata_queued_cmd *qc) |
1404 | { | 1401 | { |
1405 | struct ata_taskfile *tf = &qc->tf; | 1402 | struct ata_taskfile *tf = &qc->tf; |
1406 | 1403 | ||
1407 | tf->flags |= ATA_TFLAG_DEVICE; | 1404 | tf->flags |= ATA_TFLAG_DEVICE; |
1408 | tf->protocol = ATA_PROT_NODATA; | 1405 | tf->protocol = ATA_PROT_NODATA; |
1409 | 1406 | ||
1410 | if (qc->dev->flags & ATA_DFLAG_FLUSH_EXT) | 1407 | if (qc->dev->flags & ATA_DFLAG_FLUSH_EXT) |
1411 | tf->command = ATA_CMD_FLUSH_EXT; | 1408 | tf->command = ATA_CMD_FLUSH_EXT; |
1412 | else | 1409 | else |
1413 | tf->command = ATA_CMD_FLUSH; | 1410 | tf->command = ATA_CMD_FLUSH; |
1414 | 1411 | ||
1415 | /* flush is critical for IO integrity, consider it an IO command */ | 1412 | /* flush is critical for IO integrity, consider it an IO command */ |
1416 | qc->flags |= ATA_QCFLAG_IO; | 1413 | qc->flags |= ATA_QCFLAG_IO; |
1417 | 1414 | ||
1418 | return 0; | 1415 | return 0; |
1419 | } | 1416 | } |
1420 | 1417 | ||
1421 | /** | 1418 | /** |
1422 | * scsi_6_lba_len - Get LBA and transfer length | 1419 | * scsi_6_lba_len - Get LBA and transfer length |
1423 | * @cdb: SCSI command to translate | 1420 | * @cdb: SCSI command to translate |
1424 | * | 1421 | * |
1425 | * Calculate LBA and transfer length for 6-byte commands. | 1422 | * Calculate LBA and transfer length for 6-byte commands. |
1426 | * | 1423 | * |
1427 | * RETURNS: | 1424 | * RETURNS: |
1428 | * @plba: the LBA | 1425 | * @plba: the LBA |
1429 | * @plen: the transfer length | 1426 | * @plen: the transfer length |
1430 | */ | 1427 | */ |
1431 | static void scsi_6_lba_len(const u8 *cdb, u64 *plba, u32 *plen) | 1428 | static void scsi_6_lba_len(const u8 *cdb, u64 *plba, u32 *plen) |
1432 | { | 1429 | { |
1433 | u64 lba = 0; | 1430 | u64 lba = 0; |
1434 | u32 len; | 1431 | u32 len; |
1435 | 1432 | ||
1436 | VPRINTK("six-byte command\n"); | 1433 | VPRINTK("six-byte command\n"); |
1437 | 1434 | ||
1438 | lba |= ((u64)(cdb[1] & 0x1f)) << 16; | 1435 | lba |= ((u64)(cdb[1] & 0x1f)) << 16; |
1439 | lba |= ((u64)cdb[2]) << 8; | 1436 | lba |= ((u64)cdb[2]) << 8; |
1440 | lba |= ((u64)cdb[3]); | 1437 | lba |= ((u64)cdb[3]); |
1441 | 1438 | ||
1442 | len = cdb[4]; | 1439 | len = cdb[4]; |
1443 | 1440 | ||
1444 | *plba = lba; | 1441 | *plba = lba; |
1445 | *plen = len; | 1442 | *plen = len; |
1446 | } | 1443 | } |
1447 | 1444 | ||
1448 | /** | 1445 | /** |
1449 | * scsi_10_lba_len - Get LBA and transfer length | 1446 | * scsi_10_lba_len - Get LBA and transfer length |
1450 | * @cdb: SCSI command to translate | 1447 | * @cdb: SCSI command to translate |
1451 | * | 1448 | * |
1452 | * Calculate LBA and transfer length for 10-byte commands. | 1449 | * Calculate LBA and transfer length for 10-byte commands. |
1453 | * | 1450 | * |
1454 | * RETURNS: | 1451 | * RETURNS: |
1455 | * @plba: the LBA | 1452 | * @plba: the LBA |
1456 | * @plen: the transfer length | 1453 | * @plen: the transfer length |
1457 | */ | 1454 | */ |
1458 | static void scsi_10_lba_len(const u8 *cdb, u64 *plba, u32 *plen) | 1455 | static void scsi_10_lba_len(const u8 *cdb, u64 *plba, u32 *plen) |
1459 | { | 1456 | { |
1460 | u64 lba = 0; | 1457 | u64 lba = 0; |
1461 | u32 len = 0; | 1458 | u32 len = 0; |
1462 | 1459 | ||
1463 | VPRINTK("ten-byte command\n"); | 1460 | VPRINTK("ten-byte command\n"); |
1464 | 1461 | ||
1465 | lba |= ((u64)cdb[2]) << 24; | 1462 | lba |= ((u64)cdb[2]) << 24; |
1466 | lba |= ((u64)cdb[3]) << 16; | 1463 | lba |= ((u64)cdb[3]) << 16; |
1467 | lba |= ((u64)cdb[4]) << 8; | 1464 | lba |= ((u64)cdb[4]) << 8; |
1468 | lba |= ((u64)cdb[5]); | 1465 | lba |= ((u64)cdb[5]); |
1469 | 1466 | ||
1470 | len |= ((u32)cdb[7]) << 8; | 1467 | len |= ((u32)cdb[7]) << 8; |
1471 | len |= ((u32)cdb[8]); | 1468 | len |= ((u32)cdb[8]); |
1472 | 1469 | ||
1473 | *plba = lba; | 1470 | *plba = lba; |
1474 | *plen = len; | 1471 | *plen = len; |
1475 | } | 1472 | } |
1476 | 1473 | ||
1477 | /** | 1474 | /** |
1478 | * scsi_16_lba_len - Get LBA and transfer length | 1475 | * scsi_16_lba_len - Get LBA and transfer length |
1479 | * @cdb: SCSI command to translate | 1476 | * @cdb: SCSI command to translate |
1480 | * | 1477 | * |
1481 | * Calculate LBA and transfer length for 16-byte commands. | 1478 | * Calculate LBA and transfer length for 16-byte commands. |
1482 | * | 1479 | * |
1483 | * RETURNS: | 1480 | * RETURNS: |
1484 | * @plba: the LBA | 1481 | * @plba: the LBA |
1485 | * @plen: the transfer length | 1482 | * @plen: the transfer length |
1486 | */ | 1483 | */ |
1487 | static void scsi_16_lba_len(const u8 *cdb, u64 *plba, u32 *plen) | 1484 | static void scsi_16_lba_len(const u8 *cdb, u64 *plba, u32 *plen) |
1488 | { | 1485 | { |
1489 | u64 lba = 0; | 1486 | u64 lba = 0; |
1490 | u32 len = 0; | 1487 | u32 len = 0; |
1491 | 1488 | ||
1492 | VPRINTK("sixteen-byte command\n"); | 1489 | VPRINTK("sixteen-byte command\n"); |
1493 | 1490 | ||
1494 | lba |= ((u64)cdb[2]) << 56; | 1491 | lba |= ((u64)cdb[2]) << 56; |
1495 | lba |= ((u64)cdb[3]) << 48; | 1492 | lba |= ((u64)cdb[3]) << 48; |
1496 | lba |= ((u64)cdb[4]) << 40; | 1493 | lba |= ((u64)cdb[4]) << 40; |
1497 | lba |= ((u64)cdb[5]) << 32; | 1494 | lba |= ((u64)cdb[5]) << 32; |
1498 | lba |= ((u64)cdb[6]) << 24; | 1495 | lba |= ((u64)cdb[6]) << 24; |
1499 | lba |= ((u64)cdb[7]) << 16; | 1496 | lba |= ((u64)cdb[7]) << 16; |
1500 | lba |= ((u64)cdb[8]) << 8; | 1497 | lba |= ((u64)cdb[8]) << 8; |
1501 | lba |= ((u64)cdb[9]); | 1498 | lba |= ((u64)cdb[9]); |
1502 | 1499 | ||
1503 | len |= ((u32)cdb[10]) << 24; | 1500 | len |= ((u32)cdb[10]) << 24; |
1504 | len |= ((u32)cdb[11]) << 16; | 1501 | len |= ((u32)cdb[11]) << 16; |
1505 | len |= ((u32)cdb[12]) << 8; | 1502 | len |= ((u32)cdb[12]) << 8; |
1506 | len |= ((u32)cdb[13]); | 1503 | len |= ((u32)cdb[13]); |
1507 | 1504 | ||
1508 | *plba = lba; | 1505 | *plba = lba; |
1509 | *plen = len; | 1506 | *plen = len; |
1510 | } | 1507 | } |
1511 | 1508 | ||
1512 | /** | 1509 | /** |
1513 | * ata_scsi_verify_xlat - Translate SCSI VERIFY command into an ATA one | 1510 | * ata_scsi_verify_xlat - Translate SCSI VERIFY command into an ATA one |
1514 | * @qc: Storage for translated ATA taskfile | 1511 | * @qc: Storage for translated ATA taskfile |
1515 | * | 1512 | * |
1516 | * Converts SCSI VERIFY command to an ATA READ VERIFY command. | 1513 | * Converts SCSI VERIFY command to an ATA READ VERIFY command. |
1517 | * | 1514 | * |
1518 | * LOCKING: | 1515 | * LOCKING: |
1519 | * spin_lock_irqsave(host lock) | 1516 | * spin_lock_irqsave(host lock) |
1520 | * | 1517 | * |
1521 | * RETURNS: | 1518 | * RETURNS: |
1522 | * Zero on success, non-zero on error. | 1519 | * Zero on success, non-zero on error. |
1523 | */ | 1520 | */ |
1524 | static unsigned int ata_scsi_verify_xlat(struct ata_queued_cmd *qc) | 1521 | static unsigned int ata_scsi_verify_xlat(struct ata_queued_cmd *qc) |
1525 | { | 1522 | { |
1526 | struct scsi_cmnd *scmd = qc->scsicmd; | 1523 | struct scsi_cmnd *scmd = qc->scsicmd; |
1527 | struct ata_taskfile *tf = &qc->tf; | 1524 | struct ata_taskfile *tf = &qc->tf; |
1528 | struct ata_device *dev = qc->dev; | 1525 | struct ata_device *dev = qc->dev; |
1529 | u64 dev_sectors = qc->dev->n_sectors; | 1526 | u64 dev_sectors = qc->dev->n_sectors; |
1530 | const u8 *cdb = scmd->cmnd; | 1527 | const u8 *cdb = scmd->cmnd; |
1531 | u64 block; | 1528 | u64 block; |
1532 | u32 n_block; | 1529 | u32 n_block; |
1533 | 1530 | ||
1534 | tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; | 1531 | tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; |
1535 | tf->protocol = ATA_PROT_NODATA; | 1532 | tf->protocol = ATA_PROT_NODATA; |
1536 | 1533 | ||
1537 | if (cdb[0] == VERIFY) { | 1534 | if (cdb[0] == VERIFY) { |
1538 | if (scmd->cmd_len < 10) | 1535 | if (scmd->cmd_len < 10) |
1539 | goto invalid_fld; | 1536 | goto invalid_fld; |
1540 | scsi_10_lba_len(cdb, &block, &n_block); | 1537 | scsi_10_lba_len(cdb, &block, &n_block); |
1541 | } else if (cdb[0] == VERIFY_16) { | 1538 | } else if (cdb[0] == VERIFY_16) { |
1542 | if (scmd->cmd_len < 16) | 1539 | if (scmd->cmd_len < 16) |
1543 | goto invalid_fld; | 1540 | goto invalid_fld; |
1544 | scsi_16_lba_len(cdb, &block, &n_block); | 1541 | scsi_16_lba_len(cdb, &block, &n_block); |
1545 | } else | 1542 | } else |
1546 | goto invalid_fld; | 1543 | goto invalid_fld; |
1547 | 1544 | ||
1548 | if (!n_block) | 1545 | if (!n_block) |
1549 | goto nothing_to_do; | 1546 | goto nothing_to_do; |
1550 | if (block >= dev_sectors) | 1547 | if (block >= dev_sectors) |
1551 | goto out_of_range; | 1548 | goto out_of_range; |
1552 | if ((block + n_block) > dev_sectors) | 1549 | if ((block + n_block) > dev_sectors) |
1553 | goto out_of_range; | 1550 | goto out_of_range; |
1554 | 1551 | ||
1555 | if (dev->flags & ATA_DFLAG_LBA) { | 1552 | if (dev->flags & ATA_DFLAG_LBA) { |
1556 | tf->flags |= ATA_TFLAG_LBA; | 1553 | tf->flags |= ATA_TFLAG_LBA; |
1557 | 1554 | ||
1558 | if (lba_28_ok(block, n_block)) { | 1555 | if (lba_28_ok(block, n_block)) { |
1559 | /* use LBA28 */ | 1556 | /* use LBA28 */ |
1560 | tf->command = ATA_CMD_VERIFY; | 1557 | tf->command = ATA_CMD_VERIFY; |
1561 | tf->device |= (block >> 24) & 0xf; | 1558 | tf->device |= (block >> 24) & 0xf; |
1562 | } else if (lba_48_ok(block, n_block)) { | 1559 | } else if (lba_48_ok(block, n_block)) { |
1563 | if (!(dev->flags & ATA_DFLAG_LBA48)) | 1560 | if (!(dev->flags & ATA_DFLAG_LBA48)) |
1564 | goto out_of_range; | 1561 | goto out_of_range; |
1565 | 1562 | ||
1566 | /* use LBA48 */ | 1563 | /* use LBA48 */ |
1567 | tf->flags |= ATA_TFLAG_LBA48; | 1564 | tf->flags |= ATA_TFLAG_LBA48; |
1568 | tf->command = ATA_CMD_VERIFY_EXT; | 1565 | tf->command = ATA_CMD_VERIFY_EXT; |
1569 | 1566 | ||
1570 | tf->hob_nsect = (n_block >> 8) & 0xff; | 1567 | tf->hob_nsect = (n_block >> 8) & 0xff; |
1571 | 1568 | ||
1572 | tf->hob_lbah = (block >> 40) & 0xff; | 1569 | tf->hob_lbah = (block >> 40) & 0xff; |
1573 | tf->hob_lbam = (block >> 32) & 0xff; | 1570 | tf->hob_lbam = (block >> 32) & 0xff; |
1574 | tf->hob_lbal = (block >> 24) & 0xff; | 1571 | tf->hob_lbal = (block >> 24) & 0xff; |
1575 | } else | 1572 | } else |
1576 | /* request too large even for LBA48 */ | 1573 | /* request too large even for LBA48 */ |
1577 | goto out_of_range; | 1574 | goto out_of_range; |
1578 | 1575 | ||
1579 | tf->nsect = n_block & 0xff; | 1576 | tf->nsect = n_block & 0xff; |
1580 | 1577 | ||
1581 | tf->lbah = (block >> 16) & 0xff; | 1578 | tf->lbah = (block >> 16) & 0xff; |
1582 | tf->lbam = (block >> 8) & 0xff; | 1579 | tf->lbam = (block >> 8) & 0xff; |
1583 | tf->lbal = block & 0xff; | 1580 | tf->lbal = block & 0xff; |
1584 | 1581 | ||
1585 | tf->device |= ATA_LBA; | 1582 | tf->device |= ATA_LBA; |
1586 | } else { | 1583 | } else { |
1587 | /* CHS */ | 1584 | /* CHS */ |
1588 | u32 sect, head, cyl, track; | 1585 | u32 sect, head, cyl, track; |
1589 | 1586 | ||
1590 | if (!lba_28_ok(block, n_block)) | 1587 | if (!lba_28_ok(block, n_block)) |
1591 | goto out_of_range; | 1588 | goto out_of_range; |
1592 | 1589 | ||
1593 | /* Convert LBA to CHS */ | 1590 | /* Convert LBA to CHS */ |
1594 | track = (u32)block / dev->sectors; | 1591 | track = (u32)block / dev->sectors; |
1595 | cyl = track / dev->heads; | 1592 | cyl = track / dev->heads; |
1596 | head = track % dev->heads; | 1593 | head = track % dev->heads; |
1597 | sect = (u32)block % dev->sectors + 1; | 1594 | sect = (u32)block % dev->sectors + 1; |
1598 | 1595 | ||
1599 | DPRINTK("block %u track %u cyl %u head %u sect %u\n", | 1596 | DPRINTK("block %u track %u cyl %u head %u sect %u\n", |
1600 | (u32)block, track, cyl, head, sect); | 1597 | (u32)block, track, cyl, head, sect); |
1601 | 1598 | ||
1602 | /* Check whether the converted CHS can fit. | 1599 | /* Check whether the converted CHS can fit. |
1603 | Cylinder: 0-65535 | 1600 | Cylinder: 0-65535 |
1604 | Head: 0-15 | 1601 | Head: 0-15 |
1605 | Sector: 1-255*/ | 1602 | Sector: 1-255*/ |
1606 | if ((cyl >> 16) || (head >> 4) || (sect >> 8) || (!sect)) | 1603 | if ((cyl >> 16) || (head >> 4) || (sect >> 8) || (!sect)) |
1607 | goto out_of_range; | 1604 | goto out_of_range; |
1608 | 1605 | ||
1609 | tf->command = ATA_CMD_VERIFY; | 1606 | tf->command = ATA_CMD_VERIFY; |
1610 | tf->nsect = n_block & 0xff; /* Sector count 0 means 256 sectors */ | 1607 | tf->nsect = n_block & 0xff; /* Sector count 0 means 256 sectors */ |
1611 | tf->lbal = sect; | 1608 | tf->lbal = sect; |
1612 | tf->lbam = cyl; | 1609 | tf->lbam = cyl; |
1613 | tf->lbah = cyl >> 8; | 1610 | tf->lbah = cyl >> 8; |
1614 | tf->device |= head; | 1611 | tf->device |= head; |
1615 | } | 1612 | } |
1616 | 1613 | ||
1617 | return 0; | 1614 | return 0; |
1618 | 1615 | ||
1619 | invalid_fld: | 1616 | invalid_fld: |
1620 | ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x24, 0x0); | 1617 | ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x24, 0x0); |
1621 | /* "Invalid field in cbd" */ | 1618 | /* "Invalid field in cbd" */ |
1622 | return 1; | 1619 | return 1; |
1623 | 1620 | ||
1624 | out_of_range: | 1621 | out_of_range: |
1625 | ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x21, 0x0); | 1622 | ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x21, 0x0); |
1626 | /* "Logical Block Address out of range" */ | 1623 | /* "Logical Block Address out of range" */ |
1627 | return 1; | 1624 | return 1; |
1628 | 1625 | ||
1629 | nothing_to_do: | 1626 | nothing_to_do: |
1630 | scmd->result = SAM_STAT_GOOD; | 1627 | scmd->result = SAM_STAT_GOOD; |
1631 | return 1; | 1628 | return 1; |
1632 | } | 1629 | } |
1633 | 1630 | ||
1634 | /** | 1631 | /** |
1635 | * ata_scsi_rw_xlat - Translate SCSI r/w command into an ATA one | 1632 | * ata_scsi_rw_xlat - Translate SCSI r/w command into an ATA one |
1636 | * @qc: Storage for translated ATA taskfile | 1633 | * @qc: Storage for translated ATA taskfile |
1637 | * | 1634 | * |
1638 | * Converts any of six SCSI read/write commands into the | 1635 | * Converts any of six SCSI read/write commands into the |
1639 | * ATA counterpart, including starting sector (LBA), | 1636 | * ATA counterpart, including starting sector (LBA), |
1640 | * sector count, and taking into account the device's LBA48 | 1637 | * sector count, and taking into account the device's LBA48 |
1641 | * support. | 1638 | * support. |
1642 | * | 1639 | * |
1643 | * Commands %READ_6, %READ_10, %READ_16, %WRITE_6, %WRITE_10, and | 1640 | * Commands %READ_6, %READ_10, %READ_16, %WRITE_6, %WRITE_10, and |
1644 | * %WRITE_16 are currently supported. | 1641 | * %WRITE_16 are currently supported. |
1645 | * | 1642 | * |
1646 | * LOCKING: | 1643 | * LOCKING: |
1647 | * spin_lock_irqsave(host lock) | 1644 | * spin_lock_irqsave(host lock) |
1648 | * | 1645 | * |
1649 | * RETURNS: | 1646 | * RETURNS: |
1650 | * Zero on success, non-zero on error. | 1647 | * Zero on success, non-zero on error. |
1651 | */ | 1648 | */ |
1652 | static unsigned int ata_scsi_rw_xlat(struct ata_queued_cmd *qc) | 1649 | static unsigned int ata_scsi_rw_xlat(struct ata_queued_cmd *qc) |
1653 | { | 1650 | { |
1654 | struct scsi_cmnd *scmd = qc->scsicmd; | 1651 | struct scsi_cmnd *scmd = qc->scsicmd; |
1655 | const u8 *cdb = scmd->cmnd; | 1652 | const u8 *cdb = scmd->cmnd; |
1656 | unsigned int tf_flags = 0; | 1653 | unsigned int tf_flags = 0; |
1657 | u64 block; | 1654 | u64 block; |
1658 | u32 n_block; | 1655 | u32 n_block; |
1659 | int rc; | 1656 | int rc; |
1660 | 1657 | ||
1661 | if (cdb[0] == WRITE_10 || cdb[0] == WRITE_6 || cdb[0] == WRITE_16) | 1658 | if (cdb[0] == WRITE_10 || cdb[0] == WRITE_6 || cdb[0] == WRITE_16) |
1662 | tf_flags |= ATA_TFLAG_WRITE; | 1659 | tf_flags |= ATA_TFLAG_WRITE; |
1663 | 1660 | ||
1664 | /* Calculate the SCSI LBA, transfer length and FUA. */ | 1661 | /* Calculate the SCSI LBA, transfer length and FUA. */ |
1665 | switch (cdb[0]) { | 1662 | switch (cdb[0]) { |
1666 | case READ_10: | 1663 | case READ_10: |
1667 | case WRITE_10: | 1664 | case WRITE_10: |
1668 | if (unlikely(scmd->cmd_len < 10)) | 1665 | if (unlikely(scmd->cmd_len < 10)) |
1669 | goto invalid_fld; | 1666 | goto invalid_fld; |
1670 | scsi_10_lba_len(cdb, &block, &n_block); | 1667 | scsi_10_lba_len(cdb, &block, &n_block); |
1671 | if (cdb[1] & (1 << 3)) | 1668 | if (cdb[1] & (1 << 3)) |
1672 | tf_flags |= ATA_TFLAG_FUA; | 1669 | tf_flags |= ATA_TFLAG_FUA; |
1673 | break; | 1670 | break; |
1674 | case READ_6: | 1671 | case READ_6: |
1675 | case WRITE_6: | 1672 | case WRITE_6: |
1676 | if (unlikely(scmd->cmd_len < 6)) | 1673 | if (unlikely(scmd->cmd_len < 6)) |
1677 | goto invalid_fld; | 1674 | goto invalid_fld; |
1678 | scsi_6_lba_len(cdb, &block, &n_block); | 1675 | scsi_6_lba_len(cdb, &block, &n_block); |
1679 | 1676 | ||
1680 | /* for 6-byte r/w commands, transfer length 0 | 1677 | /* for 6-byte r/w commands, transfer length 0 |
1681 | * means 256 blocks of data, not 0 block. | 1678 | * means 256 blocks of data, not 0 block. |
1682 | */ | 1679 | */ |
1683 | if (!n_block) | 1680 | if (!n_block) |
1684 | n_block = 256; | 1681 | n_block = 256; |
1685 | break; | 1682 | break; |
1686 | case READ_16: | 1683 | case READ_16: |
1687 | case WRITE_16: | 1684 | case WRITE_16: |
1688 | if (unlikely(scmd->cmd_len < 16)) | 1685 | if (unlikely(scmd->cmd_len < 16)) |
1689 | goto invalid_fld; | 1686 | goto invalid_fld; |
1690 | scsi_16_lba_len(cdb, &block, &n_block); | 1687 | scsi_16_lba_len(cdb, &block, &n_block); |
1691 | if (cdb[1] & (1 << 3)) | 1688 | if (cdb[1] & (1 << 3)) |
1692 | tf_flags |= ATA_TFLAG_FUA; | 1689 | tf_flags |= ATA_TFLAG_FUA; |
1693 | break; | 1690 | break; |
1694 | default: | 1691 | default: |
1695 | DPRINTK("no-byte command\n"); | 1692 | DPRINTK("no-byte command\n"); |
1696 | goto invalid_fld; | 1693 | goto invalid_fld; |
1697 | } | 1694 | } |
1698 | 1695 | ||
1699 | /* Check and compose ATA command */ | 1696 | /* Check and compose ATA command */ |
1700 | if (!n_block) | 1697 | if (!n_block) |
1701 | /* For 10-byte and 16-byte SCSI R/W commands, transfer | 1698 | /* For 10-byte and 16-byte SCSI R/W commands, transfer |
1702 | * length 0 means transfer 0 block of data. | 1699 | * length 0 means transfer 0 block of data. |
1703 | * However, for ATA R/W commands, sector count 0 means | 1700 | * However, for ATA R/W commands, sector count 0 means |
1704 | * 256 or 65536 sectors, not 0 sectors as in SCSI. | 1701 | * 256 or 65536 sectors, not 0 sectors as in SCSI. |
1705 | * | 1702 | * |
1706 | * WARNING: one or two older ATA drives treat 0 as 0... | 1703 | * WARNING: one or two older ATA drives treat 0 as 0... |
1707 | */ | 1704 | */ |
1708 | goto nothing_to_do; | 1705 | goto nothing_to_do; |
1709 | 1706 | ||
1710 | qc->flags |= ATA_QCFLAG_IO; | 1707 | qc->flags |= ATA_QCFLAG_IO; |
1711 | qc->nbytes = n_block * scmd->device->sector_size; | 1708 | qc->nbytes = n_block * scmd->device->sector_size; |
1712 | 1709 | ||
1713 | rc = ata_build_rw_tf(&qc->tf, qc->dev, block, n_block, tf_flags, | 1710 | rc = ata_build_rw_tf(&qc->tf, qc->dev, block, n_block, tf_flags, |
1714 | qc->tag); | 1711 | qc->tag); |
1715 | if (likely(rc == 0)) | 1712 | if (likely(rc == 0)) |
1716 | return 0; | 1713 | return 0; |
1717 | 1714 | ||
1718 | if (rc == -ERANGE) | 1715 | if (rc == -ERANGE) |
1719 | goto out_of_range; | 1716 | goto out_of_range; |
1720 | /* treat all other errors as -EINVAL, fall through */ | 1717 | /* treat all other errors as -EINVAL, fall through */ |
1721 | invalid_fld: | 1718 | invalid_fld: |
1722 | ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x24, 0x0); | 1719 | ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x24, 0x0); |
1723 | /* "Invalid field in cbd" */ | 1720 | /* "Invalid field in cbd" */ |
1724 | return 1; | 1721 | return 1; |
1725 | 1722 | ||
1726 | out_of_range: | 1723 | out_of_range: |
1727 | ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x21, 0x0); | 1724 | ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x21, 0x0); |
1728 | /* "Logical Block Address out of range" */ | 1725 | /* "Logical Block Address out of range" */ |
1729 | return 1; | 1726 | return 1; |
1730 | 1727 | ||
1731 | nothing_to_do: | 1728 | nothing_to_do: |
1732 | scmd->result = SAM_STAT_GOOD; | 1729 | scmd->result = SAM_STAT_GOOD; |
1733 | return 1; | 1730 | return 1; |
1734 | } | 1731 | } |
1735 | 1732 | ||
1736 | static void ata_scsi_qc_complete(struct ata_queued_cmd *qc) | 1733 | static void ata_scsi_qc_complete(struct ata_queued_cmd *qc) |
1737 | { | 1734 | { |
1738 | struct ata_port *ap = qc->ap; | 1735 | struct ata_port *ap = qc->ap; |
1739 | struct scsi_cmnd *cmd = qc->scsicmd; | 1736 | struct scsi_cmnd *cmd = qc->scsicmd; |
1740 | u8 *cdb = cmd->cmnd; | 1737 | u8 *cdb = cmd->cmnd; |
1741 | int need_sense = (qc->err_mask != 0); | 1738 | int need_sense = (qc->err_mask != 0); |
1742 | 1739 | ||
1743 | /* For ATA pass thru (SAT) commands, generate a sense block if | 1740 | /* For ATA pass thru (SAT) commands, generate a sense block if |
1744 | * user mandated it or if there's an error. Note that if we | 1741 | * user mandated it or if there's an error. Note that if we |
1745 | * generate because the user forced us to [CK_COND =1], a check | 1742 | * generate because the user forced us to [CK_COND =1], a check |
1746 | * condition is generated and the ATA register values are returned | 1743 | * condition is generated and the ATA register values are returned |
1747 | * whether the command completed successfully or not. If there | 1744 | * whether the command completed successfully or not. If there |
1748 | * was no error, we use the following sense data: | 1745 | * was no error, we use the following sense data: |
1749 | * sk = RECOVERED ERROR | 1746 | * sk = RECOVERED ERROR |
1750 | * asc,ascq = ATA PASS-THROUGH INFORMATION AVAILABLE | 1747 | * asc,ascq = ATA PASS-THROUGH INFORMATION AVAILABLE |
1751 | */ | 1748 | */ |
1752 | if (((cdb[0] == ATA_16) || (cdb[0] == ATA_12)) && | 1749 | if (((cdb[0] == ATA_16) || (cdb[0] == ATA_12)) && |
1753 | ((cdb[2] & 0x20) || need_sense)) { | 1750 | ((cdb[2] & 0x20) || need_sense)) { |
1754 | ata_gen_passthru_sense(qc); | 1751 | ata_gen_passthru_sense(qc); |
1755 | } else { | 1752 | } else { |
1756 | if (!need_sense) { | 1753 | if (!need_sense) { |
1757 | cmd->result = SAM_STAT_GOOD; | 1754 | cmd->result = SAM_STAT_GOOD; |
1758 | } else { | 1755 | } else { |
1759 | /* TODO: decide which descriptor format to use | 1756 | /* TODO: decide which descriptor format to use |
1760 | * for 48b LBA devices and call that here | 1757 | * for 48b LBA devices and call that here |
1761 | * instead of the fixed desc, which is only | 1758 | * instead of the fixed desc, which is only |
1762 | * good for smaller LBA (and maybe CHS?) | 1759 | * good for smaller LBA (and maybe CHS?) |
1763 | * devices. | 1760 | * devices. |
1764 | */ | 1761 | */ |
1765 | ata_gen_ata_sense(qc); | 1762 | ata_gen_ata_sense(qc); |
1766 | } | 1763 | } |
1767 | } | 1764 | } |
1768 | 1765 | ||
1769 | if (need_sense && !ap->ops->error_handler) | 1766 | if (need_sense && !ap->ops->error_handler) |
1770 | ata_dump_status(ap->print_id, &qc->result_tf); | 1767 | ata_dump_status(ap->print_id, &qc->result_tf); |
1771 | 1768 | ||
1772 | qc->scsidone(cmd); | 1769 | qc->scsidone(cmd); |
1773 | 1770 | ||
1774 | ata_qc_free(qc); | 1771 | ata_qc_free(qc); |
1775 | } | 1772 | } |
1776 | 1773 | ||
1777 | /** | 1774 | /** |
1778 | * ata_scsi_translate - Translate then issue SCSI command to ATA device | 1775 | * ata_scsi_translate - Translate then issue SCSI command to ATA device |
1779 | * @dev: ATA device to which the command is addressed | 1776 | * @dev: ATA device to which the command is addressed |
1780 | * @cmd: SCSI command to execute | 1777 | * @cmd: SCSI command to execute |
1781 | * @xlat_func: Actor which translates @cmd to an ATA taskfile | 1778 | * @xlat_func: Actor which translates @cmd to an ATA taskfile |
1782 | * | 1779 | * |
1783 | * Our ->queuecommand() function has decided that the SCSI | 1780 | * Our ->queuecommand() function has decided that the SCSI |
1784 | * command issued can be directly translated into an ATA | 1781 | * command issued can be directly translated into an ATA |
1785 | * command, rather than handled internally. | 1782 | * command, rather than handled internally. |
1786 | * | 1783 | * |
1787 | * This function sets up an ata_queued_cmd structure for the | 1784 | * This function sets up an ata_queued_cmd structure for the |
1788 | * SCSI command, and sends that ata_queued_cmd to the hardware. | 1785 | * SCSI command, and sends that ata_queued_cmd to the hardware. |
1789 | * | 1786 | * |
1790 | * The xlat_func argument (actor) returns 0 if ready to execute | 1787 | * The xlat_func argument (actor) returns 0 if ready to execute |
1791 | * ATA command, else 1 to finish translation. If 1 is returned | 1788 | * ATA command, else 1 to finish translation. If 1 is returned |
1792 | * then cmd->result (and possibly cmd->sense_buffer) are assumed | 1789 | * then cmd->result (and possibly cmd->sense_buffer) are assumed |
1793 | * to be set reflecting an error condition or clean (early) | 1790 | * to be set reflecting an error condition or clean (early) |
1794 | * termination. | 1791 | * termination. |
1795 | * | 1792 | * |
1796 | * LOCKING: | 1793 | * LOCKING: |
1797 | * spin_lock_irqsave(host lock) | 1794 | * spin_lock_irqsave(host lock) |
1798 | * | 1795 | * |
1799 | * RETURNS: | 1796 | * RETURNS: |
1800 | * 0 on success, SCSI_ML_QUEUE_DEVICE_BUSY if the command | 1797 | * 0 on success, SCSI_ML_QUEUE_DEVICE_BUSY if the command |
1801 | * needs to be deferred. | 1798 | * needs to be deferred. |
1802 | */ | 1799 | */ |
1803 | static int ata_scsi_translate(struct ata_device *dev, struct scsi_cmnd *cmd, | 1800 | static int ata_scsi_translate(struct ata_device *dev, struct scsi_cmnd *cmd, |
1804 | ata_xlat_func_t xlat_func) | 1801 | ata_xlat_func_t xlat_func) |
1805 | { | 1802 | { |
1806 | struct ata_port *ap = dev->link->ap; | 1803 | struct ata_port *ap = dev->link->ap; |
1807 | struct ata_queued_cmd *qc; | 1804 | struct ata_queued_cmd *qc; |
1808 | int rc; | 1805 | int rc; |
1809 | 1806 | ||
1810 | VPRINTK("ENTER\n"); | 1807 | VPRINTK("ENTER\n"); |
1811 | 1808 | ||
1812 | qc = ata_scsi_qc_new(dev, cmd); | 1809 | qc = ata_scsi_qc_new(dev, cmd); |
1813 | if (!qc) | 1810 | if (!qc) |
1814 | goto err_mem; | 1811 | goto err_mem; |
1815 | 1812 | ||
1816 | /* data is present; dma-map it */ | 1813 | /* data is present; dma-map it */ |
1817 | if (cmd->sc_data_direction == DMA_FROM_DEVICE || | 1814 | if (cmd->sc_data_direction == DMA_FROM_DEVICE || |
1818 | cmd->sc_data_direction == DMA_TO_DEVICE) { | 1815 | cmd->sc_data_direction == DMA_TO_DEVICE) { |
1819 | if (unlikely(scsi_bufflen(cmd) < 1)) { | 1816 | if (unlikely(scsi_bufflen(cmd) < 1)) { |
1820 | ata_dev_warn(dev, "WARNING: zero len r/w req\n"); | 1817 | ata_dev_warn(dev, "WARNING: zero len r/w req\n"); |
1821 | goto err_did; | 1818 | goto err_did; |
1822 | } | 1819 | } |
1823 | 1820 | ||
1824 | ata_sg_init(qc, scsi_sglist(cmd), scsi_sg_count(cmd)); | 1821 | ata_sg_init(qc, scsi_sglist(cmd), scsi_sg_count(cmd)); |
1825 | 1822 | ||
1826 | qc->dma_dir = cmd->sc_data_direction; | 1823 | qc->dma_dir = cmd->sc_data_direction; |
1827 | } | 1824 | } |
1828 | 1825 | ||
1829 | qc->complete_fn = ata_scsi_qc_complete; | 1826 | qc->complete_fn = ata_scsi_qc_complete; |
1830 | 1827 | ||
1831 | if (xlat_func(qc)) | 1828 | if (xlat_func(qc)) |
1832 | goto early_finish; | 1829 | goto early_finish; |
1833 | 1830 | ||
1834 | if (ap->ops->qc_defer) { | 1831 | if (ap->ops->qc_defer) { |
1835 | if ((rc = ap->ops->qc_defer(qc))) | 1832 | if ((rc = ap->ops->qc_defer(qc))) |
1836 | goto defer; | 1833 | goto defer; |
1837 | } | 1834 | } |
1838 | 1835 | ||
1839 | /* select device, send command to hardware */ | 1836 | /* select device, send command to hardware */ |
1840 | ata_qc_issue(qc); | 1837 | ata_qc_issue(qc); |
1841 | 1838 | ||
1842 | VPRINTK("EXIT\n"); | 1839 | VPRINTK("EXIT\n"); |
1843 | return 0; | 1840 | return 0; |
1844 | 1841 | ||
1845 | early_finish: | 1842 | early_finish: |
1846 | ata_qc_free(qc); | 1843 | ata_qc_free(qc); |
1847 | cmd->scsi_done(cmd); | 1844 | cmd->scsi_done(cmd); |
1848 | DPRINTK("EXIT - early finish (good or error)\n"); | 1845 | DPRINTK("EXIT - early finish (good or error)\n"); |
1849 | return 0; | 1846 | return 0; |
1850 | 1847 | ||
1851 | err_did: | 1848 | err_did: |
1852 | ata_qc_free(qc); | 1849 | ata_qc_free(qc); |
1853 | cmd->result = (DID_ERROR << 16); | 1850 | cmd->result = (DID_ERROR << 16); |
1854 | cmd->scsi_done(cmd); | 1851 | cmd->scsi_done(cmd); |
1855 | err_mem: | 1852 | err_mem: |
1856 | DPRINTK("EXIT - internal\n"); | 1853 | DPRINTK("EXIT - internal\n"); |
1857 | return 0; | 1854 | return 0; |
1858 | 1855 | ||
1859 | defer: | 1856 | defer: |
1860 | ata_qc_free(qc); | 1857 | ata_qc_free(qc); |
1861 | DPRINTK("EXIT - defer\n"); | 1858 | DPRINTK("EXIT - defer\n"); |
1862 | if (rc == ATA_DEFER_LINK) | 1859 | if (rc == ATA_DEFER_LINK) |
1863 | return SCSI_MLQUEUE_DEVICE_BUSY; | 1860 | return SCSI_MLQUEUE_DEVICE_BUSY; |
1864 | else | 1861 | else |
1865 | return SCSI_MLQUEUE_HOST_BUSY; | 1862 | return SCSI_MLQUEUE_HOST_BUSY; |
1866 | } | 1863 | } |
1867 | 1864 | ||
1868 | /** | 1865 | /** |
1869 | * ata_scsi_rbuf_get - Map response buffer. | 1866 | * ata_scsi_rbuf_get - Map response buffer. |
1870 | * @cmd: SCSI command containing buffer to be mapped. | 1867 | * @cmd: SCSI command containing buffer to be mapped. |
1871 | * @flags: unsigned long variable to store irq enable status | 1868 | * @flags: unsigned long variable to store irq enable status |
1872 | * @copy_in: copy in from user buffer | 1869 | * @copy_in: copy in from user buffer |
1873 | * | 1870 | * |
1874 | * Prepare buffer for simulated SCSI commands. | 1871 | * Prepare buffer for simulated SCSI commands. |
1875 | * | 1872 | * |
1876 | * LOCKING: | 1873 | * LOCKING: |
1877 | * spin_lock_irqsave(ata_scsi_rbuf_lock) on success | 1874 | * spin_lock_irqsave(ata_scsi_rbuf_lock) on success |
1878 | * | 1875 | * |
1879 | * RETURNS: | 1876 | * RETURNS: |
1880 | * Pointer to response buffer. | 1877 | * Pointer to response buffer. |
1881 | */ | 1878 | */ |
1882 | static void *ata_scsi_rbuf_get(struct scsi_cmnd *cmd, bool copy_in, | 1879 | static void *ata_scsi_rbuf_get(struct scsi_cmnd *cmd, bool copy_in, |
1883 | unsigned long *flags) | 1880 | unsigned long *flags) |
1884 | { | 1881 | { |
1885 | spin_lock_irqsave(&ata_scsi_rbuf_lock, *flags); | 1882 | spin_lock_irqsave(&ata_scsi_rbuf_lock, *flags); |
1886 | 1883 | ||
1887 | memset(ata_scsi_rbuf, 0, ATA_SCSI_RBUF_SIZE); | 1884 | memset(ata_scsi_rbuf, 0, ATA_SCSI_RBUF_SIZE); |
1888 | if (copy_in) | 1885 | if (copy_in) |
1889 | sg_copy_to_buffer(scsi_sglist(cmd), scsi_sg_count(cmd), | 1886 | sg_copy_to_buffer(scsi_sglist(cmd), scsi_sg_count(cmd), |
1890 | ata_scsi_rbuf, ATA_SCSI_RBUF_SIZE); | 1887 | ata_scsi_rbuf, ATA_SCSI_RBUF_SIZE); |
1891 | return ata_scsi_rbuf; | 1888 | return ata_scsi_rbuf; |
1892 | } | 1889 | } |
1893 | 1890 | ||
1894 | /** | 1891 | /** |
1895 | * ata_scsi_rbuf_put - Unmap response buffer. | 1892 | * ata_scsi_rbuf_put - Unmap response buffer. |
1896 | * @cmd: SCSI command containing buffer to be unmapped. | 1893 | * @cmd: SCSI command containing buffer to be unmapped. |
1897 | * @copy_out: copy out result | 1894 | * @copy_out: copy out result |
1898 | * @flags: @flags passed to ata_scsi_rbuf_get() | 1895 | * @flags: @flags passed to ata_scsi_rbuf_get() |
1899 | * | 1896 | * |
1900 | * Returns rbuf buffer. The result is copied to @cmd's buffer if | 1897 | * Returns rbuf buffer. The result is copied to @cmd's buffer if |
1901 | * @copy_back is true. | 1898 | * @copy_back is true. |
1902 | * | 1899 | * |
1903 | * LOCKING: | 1900 | * LOCKING: |
1904 | * Unlocks ata_scsi_rbuf_lock. | 1901 | * Unlocks ata_scsi_rbuf_lock. |
1905 | */ | 1902 | */ |
1906 | static inline void ata_scsi_rbuf_put(struct scsi_cmnd *cmd, bool copy_out, | 1903 | static inline void ata_scsi_rbuf_put(struct scsi_cmnd *cmd, bool copy_out, |
1907 | unsigned long *flags) | 1904 | unsigned long *flags) |
1908 | { | 1905 | { |
1909 | if (copy_out) | 1906 | if (copy_out) |
1910 | sg_copy_from_buffer(scsi_sglist(cmd), scsi_sg_count(cmd), | 1907 | sg_copy_from_buffer(scsi_sglist(cmd), scsi_sg_count(cmd), |
1911 | ata_scsi_rbuf, ATA_SCSI_RBUF_SIZE); | 1908 | ata_scsi_rbuf, ATA_SCSI_RBUF_SIZE); |
1912 | spin_unlock_irqrestore(&ata_scsi_rbuf_lock, *flags); | 1909 | spin_unlock_irqrestore(&ata_scsi_rbuf_lock, *flags); |
1913 | } | 1910 | } |
1914 | 1911 | ||
1915 | /** | 1912 | /** |
1916 | * ata_scsi_rbuf_fill - wrapper for SCSI command simulators | 1913 | * ata_scsi_rbuf_fill - wrapper for SCSI command simulators |
1917 | * @args: device IDENTIFY data / SCSI command of interest. | 1914 | * @args: device IDENTIFY data / SCSI command of interest. |
1918 | * @actor: Callback hook for desired SCSI command simulator | 1915 | * @actor: Callback hook for desired SCSI command simulator |
1919 | * | 1916 | * |
1920 | * Takes care of the hard work of simulating a SCSI command... | 1917 | * Takes care of the hard work of simulating a SCSI command... |
1921 | * Mapping the response buffer, calling the command's handler, | 1918 | * Mapping the response buffer, calling the command's handler, |
1922 | * and handling the handler's return value. This return value | 1919 | * and handling the handler's return value. This return value |
1923 | * indicates whether the handler wishes the SCSI command to be | 1920 | * indicates whether the handler wishes the SCSI command to be |
1924 | * completed successfully (0), or not (in which case cmd->result | 1921 | * completed successfully (0), or not (in which case cmd->result |
1925 | * and sense buffer are assumed to be set). | 1922 | * and sense buffer are assumed to be set). |
1926 | * | 1923 | * |
1927 | * LOCKING: | 1924 | * LOCKING: |
1928 | * spin_lock_irqsave(host lock) | 1925 | * spin_lock_irqsave(host lock) |
1929 | */ | 1926 | */ |
1930 | static void ata_scsi_rbuf_fill(struct ata_scsi_args *args, | 1927 | static void ata_scsi_rbuf_fill(struct ata_scsi_args *args, |
1931 | unsigned int (*actor)(struct ata_scsi_args *args, u8 *rbuf)) | 1928 | unsigned int (*actor)(struct ata_scsi_args *args, u8 *rbuf)) |
1932 | { | 1929 | { |
1933 | u8 *rbuf; | 1930 | u8 *rbuf; |
1934 | unsigned int rc; | 1931 | unsigned int rc; |
1935 | struct scsi_cmnd *cmd = args->cmd; | 1932 | struct scsi_cmnd *cmd = args->cmd; |
1936 | unsigned long flags; | 1933 | unsigned long flags; |
1937 | 1934 | ||
1938 | rbuf = ata_scsi_rbuf_get(cmd, false, &flags); | 1935 | rbuf = ata_scsi_rbuf_get(cmd, false, &flags); |
1939 | rc = actor(args, rbuf); | 1936 | rc = actor(args, rbuf); |
1940 | ata_scsi_rbuf_put(cmd, rc == 0, &flags); | 1937 | ata_scsi_rbuf_put(cmd, rc == 0, &flags); |
1941 | 1938 | ||
1942 | if (rc == 0) | 1939 | if (rc == 0) |
1943 | cmd->result = SAM_STAT_GOOD; | 1940 | cmd->result = SAM_STAT_GOOD; |
1944 | args->done(cmd); | 1941 | args->done(cmd); |
1945 | } | 1942 | } |
1946 | 1943 | ||
1947 | /** | 1944 | /** |
1948 | * ata_scsiop_inq_std - Simulate INQUIRY command | 1945 | * ata_scsiop_inq_std - Simulate INQUIRY command |
1949 | * @args: device IDENTIFY data / SCSI command of interest. | 1946 | * @args: device IDENTIFY data / SCSI command of interest. |
1950 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | 1947 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. |
1951 | * | 1948 | * |
1952 | * Returns standard device identification data associated | 1949 | * Returns standard device identification data associated |
1953 | * with non-VPD INQUIRY command output. | 1950 | * with non-VPD INQUIRY command output. |
1954 | * | 1951 | * |
1955 | * LOCKING: | 1952 | * LOCKING: |
1956 | * spin_lock_irqsave(host lock) | 1953 | * spin_lock_irqsave(host lock) |
1957 | */ | 1954 | */ |
1958 | static unsigned int ata_scsiop_inq_std(struct ata_scsi_args *args, u8 *rbuf) | 1955 | static unsigned int ata_scsiop_inq_std(struct ata_scsi_args *args, u8 *rbuf) |
1959 | { | 1956 | { |
1960 | const u8 versions[] = { | 1957 | const u8 versions[] = { |
1961 | 0x60, /* SAM-3 (no version claimed) */ | 1958 | 0x60, /* SAM-3 (no version claimed) */ |
1962 | 1959 | ||
1963 | 0x03, | 1960 | 0x03, |
1964 | 0x20, /* SBC-2 (no version claimed) */ | 1961 | 0x20, /* SBC-2 (no version claimed) */ |
1965 | 1962 | ||
1966 | 0x02, | 1963 | 0x02, |
1967 | 0x60 /* SPC-3 (no version claimed) */ | 1964 | 0x60 /* SPC-3 (no version claimed) */ |
1968 | }; | 1965 | }; |
1969 | u8 hdr[] = { | 1966 | u8 hdr[] = { |
1970 | TYPE_DISK, | 1967 | TYPE_DISK, |
1971 | 0, | 1968 | 0, |
1972 | 0x5, /* claim SPC-3 version compatibility */ | 1969 | 0x5, /* claim SPC-3 version compatibility */ |
1973 | 2, | 1970 | 2, |
1974 | 95 - 4 | 1971 | 95 - 4 |
1975 | }; | 1972 | }; |
1976 | 1973 | ||
1977 | VPRINTK("ENTER\n"); | 1974 | VPRINTK("ENTER\n"); |
1978 | 1975 | ||
1979 | /* set scsi removeable (RMB) bit per ata bit */ | 1976 | /* set scsi removeable (RMB) bit per ata bit */ |
1980 | if (ata_id_removeable(args->id)) | 1977 | if (ata_id_removeable(args->id)) |
1981 | hdr[1] |= (1 << 7); | 1978 | hdr[1] |= (1 << 7); |
1982 | 1979 | ||
1983 | memcpy(rbuf, hdr, sizeof(hdr)); | 1980 | memcpy(rbuf, hdr, sizeof(hdr)); |
1984 | memcpy(&rbuf[8], "ATA ", 8); | 1981 | memcpy(&rbuf[8], "ATA ", 8); |
1985 | ata_id_string(args->id, &rbuf[16], ATA_ID_PROD, 16); | 1982 | ata_id_string(args->id, &rbuf[16], ATA_ID_PROD, 16); |
1986 | ata_id_string(args->id, &rbuf[32], ATA_ID_FW_REV, 4); | 1983 | ata_id_string(args->id, &rbuf[32], ATA_ID_FW_REV, 4); |
1987 | 1984 | ||
1988 | if (rbuf[32] == 0 || rbuf[32] == ' ') | 1985 | if (rbuf[32] == 0 || rbuf[32] == ' ') |
1989 | memcpy(&rbuf[32], "n/a ", 4); | 1986 | memcpy(&rbuf[32], "n/a ", 4); |
1990 | 1987 | ||
1991 | memcpy(rbuf + 59, versions, sizeof(versions)); | 1988 | memcpy(rbuf + 59, versions, sizeof(versions)); |
1992 | 1989 | ||
1993 | return 0; | 1990 | return 0; |
1994 | } | 1991 | } |
1995 | 1992 | ||
1996 | /** | 1993 | /** |
1997 | * ata_scsiop_inq_00 - Simulate INQUIRY VPD page 0, list of pages | 1994 | * ata_scsiop_inq_00 - Simulate INQUIRY VPD page 0, list of pages |
1998 | * @args: device IDENTIFY data / SCSI command of interest. | 1995 | * @args: device IDENTIFY data / SCSI command of interest. |
1999 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | 1996 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. |
2000 | * | 1997 | * |
2001 | * Returns list of inquiry VPD pages available. | 1998 | * Returns list of inquiry VPD pages available. |
2002 | * | 1999 | * |
2003 | * LOCKING: | 2000 | * LOCKING: |
2004 | * spin_lock_irqsave(host lock) | 2001 | * spin_lock_irqsave(host lock) |
2005 | */ | 2002 | */ |
2006 | static unsigned int ata_scsiop_inq_00(struct ata_scsi_args *args, u8 *rbuf) | 2003 | static unsigned int ata_scsiop_inq_00(struct ata_scsi_args *args, u8 *rbuf) |
2007 | { | 2004 | { |
2008 | const u8 pages[] = { | 2005 | const u8 pages[] = { |
2009 | 0x00, /* page 0x00, this page */ | 2006 | 0x00, /* page 0x00, this page */ |
2010 | 0x80, /* page 0x80, unit serial no page */ | 2007 | 0x80, /* page 0x80, unit serial no page */ |
2011 | 0x83, /* page 0x83, device ident page */ | 2008 | 0x83, /* page 0x83, device ident page */ |
2012 | 0x89, /* page 0x89, ata info page */ | 2009 | 0x89, /* page 0x89, ata info page */ |
2013 | 0xb0, /* page 0xb0, block limits page */ | 2010 | 0xb0, /* page 0xb0, block limits page */ |
2014 | 0xb1, /* page 0xb1, block device characteristics page */ | 2011 | 0xb1, /* page 0xb1, block device characteristics page */ |
2015 | 0xb2, /* page 0xb2, thin provisioning page */ | 2012 | 0xb2, /* page 0xb2, thin provisioning page */ |
2016 | }; | 2013 | }; |
2017 | 2014 | ||
2018 | rbuf[3] = sizeof(pages); /* number of supported VPD pages */ | 2015 | rbuf[3] = sizeof(pages); /* number of supported VPD pages */ |
2019 | memcpy(rbuf + 4, pages, sizeof(pages)); | 2016 | memcpy(rbuf + 4, pages, sizeof(pages)); |
2020 | return 0; | 2017 | return 0; |
2021 | } | 2018 | } |
2022 | 2019 | ||
2023 | /** | 2020 | /** |
2024 | * ata_scsiop_inq_80 - Simulate INQUIRY VPD page 80, device serial number | 2021 | * ata_scsiop_inq_80 - Simulate INQUIRY VPD page 80, device serial number |
2025 | * @args: device IDENTIFY data / SCSI command of interest. | 2022 | * @args: device IDENTIFY data / SCSI command of interest. |
2026 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | 2023 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. |
2027 | * | 2024 | * |
2028 | * Returns ATA device serial number. | 2025 | * Returns ATA device serial number. |
2029 | * | 2026 | * |
2030 | * LOCKING: | 2027 | * LOCKING: |
2031 | * spin_lock_irqsave(host lock) | 2028 | * spin_lock_irqsave(host lock) |
2032 | */ | 2029 | */ |
2033 | static unsigned int ata_scsiop_inq_80(struct ata_scsi_args *args, u8 *rbuf) | 2030 | static unsigned int ata_scsiop_inq_80(struct ata_scsi_args *args, u8 *rbuf) |
2034 | { | 2031 | { |
2035 | const u8 hdr[] = { | 2032 | const u8 hdr[] = { |
2036 | 0, | 2033 | 0, |
2037 | 0x80, /* this page code */ | 2034 | 0x80, /* this page code */ |
2038 | 0, | 2035 | 0, |
2039 | ATA_ID_SERNO_LEN, /* page len */ | 2036 | ATA_ID_SERNO_LEN, /* page len */ |
2040 | }; | 2037 | }; |
2041 | 2038 | ||
2042 | memcpy(rbuf, hdr, sizeof(hdr)); | 2039 | memcpy(rbuf, hdr, sizeof(hdr)); |
2043 | ata_id_string(args->id, (unsigned char *) &rbuf[4], | 2040 | ata_id_string(args->id, (unsigned char *) &rbuf[4], |
2044 | ATA_ID_SERNO, ATA_ID_SERNO_LEN); | 2041 | ATA_ID_SERNO, ATA_ID_SERNO_LEN); |
2045 | return 0; | 2042 | return 0; |
2046 | } | 2043 | } |
2047 | 2044 | ||
2048 | /** | 2045 | /** |
2049 | * ata_scsiop_inq_83 - Simulate INQUIRY VPD page 83, device identity | 2046 | * ata_scsiop_inq_83 - Simulate INQUIRY VPD page 83, device identity |
2050 | * @args: device IDENTIFY data / SCSI command of interest. | 2047 | * @args: device IDENTIFY data / SCSI command of interest. |
2051 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | 2048 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. |
2052 | * | 2049 | * |
2053 | * Yields two logical unit device identification designators: | 2050 | * Yields two logical unit device identification designators: |
2054 | * - vendor specific ASCII containing the ATA serial number | 2051 | * - vendor specific ASCII containing the ATA serial number |
2055 | * - SAT defined "t10 vendor id based" containing ASCII vendor | 2052 | * - SAT defined "t10 vendor id based" containing ASCII vendor |
2056 | * name ("ATA "), model and serial numbers. | 2053 | * name ("ATA "), model and serial numbers. |
2057 | * | 2054 | * |
2058 | * LOCKING: | 2055 | * LOCKING: |
2059 | * spin_lock_irqsave(host lock) | 2056 | * spin_lock_irqsave(host lock) |
2060 | */ | 2057 | */ |
2061 | static unsigned int ata_scsiop_inq_83(struct ata_scsi_args *args, u8 *rbuf) | 2058 | static unsigned int ata_scsiop_inq_83(struct ata_scsi_args *args, u8 *rbuf) |
2062 | { | 2059 | { |
2063 | const int sat_model_serial_desc_len = 68; | 2060 | const int sat_model_serial_desc_len = 68; |
2064 | int num; | 2061 | int num; |
2065 | 2062 | ||
2066 | rbuf[1] = 0x83; /* this page code */ | 2063 | rbuf[1] = 0x83; /* this page code */ |
2067 | num = 4; | 2064 | num = 4; |
2068 | 2065 | ||
2069 | /* piv=0, assoc=lu, code_set=ACSII, designator=vendor */ | 2066 | /* piv=0, assoc=lu, code_set=ACSII, designator=vendor */ |
2070 | rbuf[num + 0] = 2; | 2067 | rbuf[num + 0] = 2; |
2071 | rbuf[num + 3] = ATA_ID_SERNO_LEN; | 2068 | rbuf[num + 3] = ATA_ID_SERNO_LEN; |
2072 | num += 4; | 2069 | num += 4; |
2073 | ata_id_string(args->id, (unsigned char *) rbuf + num, | 2070 | ata_id_string(args->id, (unsigned char *) rbuf + num, |
2074 | ATA_ID_SERNO, ATA_ID_SERNO_LEN); | 2071 | ATA_ID_SERNO, ATA_ID_SERNO_LEN); |
2075 | num += ATA_ID_SERNO_LEN; | 2072 | num += ATA_ID_SERNO_LEN; |
2076 | 2073 | ||
2077 | /* SAT defined lu model and serial numbers descriptor */ | 2074 | /* SAT defined lu model and serial numbers descriptor */ |
2078 | /* piv=0, assoc=lu, code_set=ACSII, designator=t10 vendor id */ | 2075 | /* piv=0, assoc=lu, code_set=ACSII, designator=t10 vendor id */ |
2079 | rbuf[num + 0] = 2; | 2076 | rbuf[num + 0] = 2; |
2080 | rbuf[num + 1] = 1; | 2077 | rbuf[num + 1] = 1; |
2081 | rbuf[num + 3] = sat_model_serial_desc_len; | 2078 | rbuf[num + 3] = sat_model_serial_desc_len; |
2082 | num += 4; | 2079 | num += 4; |
2083 | memcpy(rbuf + num, "ATA ", 8); | 2080 | memcpy(rbuf + num, "ATA ", 8); |
2084 | num += 8; | 2081 | num += 8; |
2085 | ata_id_string(args->id, (unsigned char *) rbuf + num, ATA_ID_PROD, | 2082 | ata_id_string(args->id, (unsigned char *) rbuf + num, ATA_ID_PROD, |
2086 | ATA_ID_PROD_LEN); | 2083 | ATA_ID_PROD_LEN); |
2087 | num += ATA_ID_PROD_LEN; | 2084 | num += ATA_ID_PROD_LEN; |
2088 | ata_id_string(args->id, (unsigned char *) rbuf + num, ATA_ID_SERNO, | 2085 | ata_id_string(args->id, (unsigned char *) rbuf + num, ATA_ID_SERNO, |
2089 | ATA_ID_SERNO_LEN); | 2086 | ATA_ID_SERNO_LEN); |
2090 | num += ATA_ID_SERNO_LEN; | 2087 | num += ATA_ID_SERNO_LEN; |
2091 | 2088 | ||
2092 | if (ata_id_has_wwn(args->id)) { | 2089 | if (ata_id_has_wwn(args->id)) { |
2093 | /* SAT defined lu world wide name */ | 2090 | /* SAT defined lu world wide name */ |
2094 | /* piv=0, assoc=lu, code_set=binary, designator=NAA */ | 2091 | /* piv=0, assoc=lu, code_set=binary, designator=NAA */ |
2095 | rbuf[num + 0] = 1; | 2092 | rbuf[num + 0] = 1; |
2096 | rbuf[num + 1] = 3; | 2093 | rbuf[num + 1] = 3; |
2097 | rbuf[num + 3] = ATA_ID_WWN_LEN; | 2094 | rbuf[num + 3] = ATA_ID_WWN_LEN; |
2098 | num += 4; | 2095 | num += 4; |
2099 | ata_id_string(args->id, (unsigned char *) rbuf + num, | 2096 | ata_id_string(args->id, (unsigned char *) rbuf + num, |
2100 | ATA_ID_WWN, ATA_ID_WWN_LEN); | 2097 | ATA_ID_WWN, ATA_ID_WWN_LEN); |
2101 | num += ATA_ID_WWN_LEN; | 2098 | num += ATA_ID_WWN_LEN; |
2102 | } | 2099 | } |
2103 | rbuf[3] = num - 4; /* page len (assume less than 256 bytes) */ | 2100 | rbuf[3] = num - 4; /* page len (assume less than 256 bytes) */ |
2104 | return 0; | 2101 | return 0; |
2105 | } | 2102 | } |
2106 | 2103 | ||
2107 | /** | 2104 | /** |
2108 | * ata_scsiop_inq_89 - Simulate INQUIRY VPD page 89, ATA info | 2105 | * ata_scsiop_inq_89 - Simulate INQUIRY VPD page 89, ATA info |
2109 | * @args: device IDENTIFY data / SCSI command of interest. | 2106 | * @args: device IDENTIFY data / SCSI command of interest. |
2110 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | 2107 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. |
2111 | * | 2108 | * |
2112 | * Yields SAT-specified ATA VPD page. | 2109 | * Yields SAT-specified ATA VPD page. |
2113 | * | 2110 | * |
2114 | * LOCKING: | 2111 | * LOCKING: |
2115 | * spin_lock_irqsave(host lock) | 2112 | * spin_lock_irqsave(host lock) |
2116 | */ | 2113 | */ |
2117 | static unsigned int ata_scsiop_inq_89(struct ata_scsi_args *args, u8 *rbuf) | 2114 | static unsigned int ata_scsiop_inq_89(struct ata_scsi_args *args, u8 *rbuf) |
2118 | { | 2115 | { |
2119 | struct ata_taskfile tf; | 2116 | struct ata_taskfile tf; |
2120 | 2117 | ||
2121 | memset(&tf, 0, sizeof(tf)); | 2118 | memset(&tf, 0, sizeof(tf)); |
2122 | 2119 | ||
2123 | rbuf[1] = 0x89; /* our page code */ | 2120 | rbuf[1] = 0x89; /* our page code */ |
2124 | rbuf[2] = (0x238 >> 8); /* page size fixed at 238h */ | 2121 | rbuf[2] = (0x238 >> 8); /* page size fixed at 238h */ |
2125 | rbuf[3] = (0x238 & 0xff); | 2122 | rbuf[3] = (0x238 & 0xff); |
2126 | 2123 | ||
2127 | memcpy(&rbuf[8], "linux ", 8); | 2124 | memcpy(&rbuf[8], "linux ", 8); |
2128 | memcpy(&rbuf[16], "libata ", 16); | 2125 | memcpy(&rbuf[16], "libata ", 16); |
2129 | memcpy(&rbuf[32], DRV_VERSION, 4); | 2126 | memcpy(&rbuf[32], DRV_VERSION, 4); |
2130 | 2127 | ||
2131 | /* we don't store the ATA device signature, so we fake it */ | 2128 | /* we don't store the ATA device signature, so we fake it */ |
2132 | 2129 | ||
2133 | tf.command = ATA_DRDY; /* really, this is Status reg */ | 2130 | tf.command = ATA_DRDY; /* really, this is Status reg */ |
2134 | tf.lbal = 0x1; | 2131 | tf.lbal = 0x1; |
2135 | tf.nsect = 0x1; | 2132 | tf.nsect = 0x1; |
2136 | 2133 | ||
2137 | ata_tf_to_fis(&tf, 0, 1, &rbuf[36]); /* TODO: PMP? */ | 2134 | ata_tf_to_fis(&tf, 0, 1, &rbuf[36]); /* TODO: PMP? */ |
2138 | rbuf[36] = 0x34; /* force D2H Reg FIS (34h) */ | 2135 | rbuf[36] = 0x34; /* force D2H Reg FIS (34h) */ |
2139 | 2136 | ||
2140 | rbuf[56] = ATA_CMD_ID_ATA; | 2137 | rbuf[56] = ATA_CMD_ID_ATA; |
2141 | 2138 | ||
2142 | memcpy(&rbuf[60], &args->id[0], 512); | 2139 | memcpy(&rbuf[60], &args->id[0], 512); |
2143 | return 0; | 2140 | return 0; |
2144 | } | 2141 | } |
2145 | 2142 | ||
2146 | static unsigned int ata_scsiop_inq_b0(struct ata_scsi_args *args, u8 *rbuf) | 2143 | static unsigned int ata_scsiop_inq_b0(struct ata_scsi_args *args, u8 *rbuf) |
2147 | { | 2144 | { |
2148 | u16 min_io_sectors; | 2145 | u16 min_io_sectors; |
2149 | 2146 | ||
2150 | rbuf[1] = 0xb0; | 2147 | rbuf[1] = 0xb0; |
2151 | rbuf[3] = 0x3c; /* required VPD size with unmap support */ | 2148 | rbuf[3] = 0x3c; /* required VPD size with unmap support */ |
2152 | 2149 | ||
2153 | /* | 2150 | /* |
2154 | * Optimal transfer length granularity. | 2151 | * Optimal transfer length granularity. |
2155 | * | 2152 | * |
2156 | * This is always one physical block, but for disks with a smaller | 2153 | * This is always one physical block, but for disks with a smaller |
2157 | * logical than physical sector size we need to figure out what the | 2154 | * logical than physical sector size we need to figure out what the |
2158 | * latter is. | 2155 | * latter is. |
2159 | */ | 2156 | */ |
2160 | min_io_sectors = 1 << ata_id_log2_per_physical_sector(args->id); | 2157 | min_io_sectors = 1 << ata_id_log2_per_physical_sector(args->id); |
2161 | put_unaligned_be16(min_io_sectors, &rbuf[6]); | 2158 | put_unaligned_be16(min_io_sectors, &rbuf[6]); |
2162 | 2159 | ||
2163 | /* | 2160 | /* |
2164 | * Optimal unmap granularity. | 2161 | * Optimal unmap granularity. |
2165 | * | 2162 | * |
2166 | * The ATA spec doesn't even know about a granularity or alignment | 2163 | * The ATA spec doesn't even know about a granularity or alignment |
2167 | * for the TRIM command. We can leave away most of the unmap related | 2164 | * for the TRIM command. We can leave away most of the unmap related |
2168 | * VPD page entries, but we have specifify a granularity to signal | 2165 | * VPD page entries, but we have specifify a granularity to signal |
2169 | * that we support some form of unmap - in thise case via WRITE SAME | 2166 | * that we support some form of unmap - in thise case via WRITE SAME |
2170 | * with the unmap bit set. | 2167 | * with the unmap bit set. |
2171 | */ | 2168 | */ |
2172 | if (ata_id_has_trim(args->id)) { | 2169 | if (ata_id_has_trim(args->id)) { |
2173 | put_unaligned_be64(65535 * 512 / 8, &rbuf[36]); | 2170 | put_unaligned_be64(65535 * 512 / 8, &rbuf[36]); |
2174 | put_unaligned_be32(1, &rbuf[28]); | 2171 | put_unaligned_be32(1, &rbuf[28]); |
2175 | } | 2172 | } |
2176 | 2173 | ||
2177 | return 0; | 2174 | return 0; |
2178 | } | 2175 | } |
2179 | 2176 | ||
2180 | static unsigned int ata_scsiop_inq_b1(struct ata_scsi_args *args, u8 *rbuf) | 2177 | static unsigned int ata_scsiop_inq_b1(struct ata_scsi_args *args, u8 *rbuf) |
2181 | { | 2178 | { |
2182 | int form_factor = ata_id_form_factor(args->id); | 2179 | int form_factor = ata_id_form_factor(args->id); |
2183 | int media_rotation_rate = ata_id_rotation_rate(args->id); | 2180 | int media_rotation_rate = ata_id_rotation_rate(args->id); |
2184 | 2181 | ||
2185 | rbuf[1] = 0xb1; | 2182 | rbuf[1] = 0xb1; |
2186 | rbuf[3] = 0x3c; | 2183 | rbuf[3] = 0x3c; |
2187 | rbuf[4] = media_rotation_rate >> 8; | 2184 | rbuf[4] = media_rotation_rate >> 8; |
2188 | rbuf[5] = media_rotation_rate; | 2185 | rbuf[5] = media_rotation_rate; |
2189 | rbuf[7] = form_factor; | 2186 | rbuf[7] = form_factor; |
2190 | 2187 | ||
2191 | return 0; | 2188 | return 0; |
2192 | } | 2189 | } |
2193 | 2190 | ||
2194 | static unsigned int ata_scsiop_inq_b2(struct ata_scsi_args *args, u8 *rbuf) | 2191 | static unsigned int ata_scsiop_inq_b2(struct ata_scsi_args *args, u8 *rbuf) |
2195 | { | 2192 | { |
2196 | /* SCSI Thin Provisioning VPD page: SBC-3 rev 22 or later */ | 2193 | /* SCSI Thin Provisioning VPD page: SBC-3 rev 22 or later */ |
2197 | rbuf[1] = 0xb2; | 2194 | rbuf[1] = 0xb2; |
2198 | rbuf[3] = 0x4; | 2195 | rbuf[3] = 0x4; |
2199 | rbuf[5] = 1 << 6; /* TPWS */ | 2196 | rbuf[5] = 1 << 6; /* TPWS */ |
2200 | 2197 | ||
2201 | return 0; | 2198 | return 0; |
2202 | } | 2199 | } |
2203 | 2200 | ||
2204 | /** | 2201 | /** |
2205 | * ata_scsiop_noop - Command handler that simply returns success. | 2202 | * ata_scsiop_noop - Command handler that simply returns success. |
2206 | * @args: device IDENTIFY data / SCSI command of interest. | 2203 | * @args: device IDENTIFY data / SCSI command of interest. |
2207 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | 2204 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. |
2208 | * | 2205 | * |
2209 | * No operation. Simply returns success to caller, to indicate | 2206 | * No operation. Simply returns success to caller, to indicate |
2210 | * that the caller should successfully complete this SCSI command. | 2207 | * that the caller should successfully complete this SCSI command. |
2211 | * | 2208 | * |
2212 | * LOCKING: | 2209 | * LOCKING: |
2213 | * spin_lock_irqsave(host lock) | 2210 | * spin_lock_irqsave(host lock) |
2214 | */ | 2211 | */ |
2215 | static unsigned int ata_scsiop_noop(struct ata_scsi_args *args, u8 *rbuf) | 2212 | static unsigned int ata_scsiop_noop(struct ata_scsi_args *args, u8 *rbuf) |
2216 | { | 2213 | { |
2217 | VPRINTK("ENTER\n"); | 2214 | VPRINTK("ENTER\n"); |
2218 | return 0; | 2215 | return 0; |
2219 | } | 2216 | } |
2220 | 2217 | ||
2221 | /** | 2218 | /** |
2222 | * modecpy - Prepare response for MODE SENSE | 2219 | * modecpy - Prepare response for MODE SENSE |
2223 | * @dest: output buffer | 2220 | * @dest: output buffer |
2224 | * @src: data being copied | 2221 | * @src: data being copied |
2225 | * @n: length of mode page | 2222 | * @n: length of mode page |
2226 | * @changeable: whether changeable parameters are requested | 2223 | * @changeable: whether changeable parameters are requested |
2227 | * | 2224 | * |
2228 | * Generate a generic MODE SENSE page for either current or changeable | 2225 | * Generate a generic MODE SENSE page for either current or changeable |
2229 | * parameters. | 2226 | * parameters. |
2230 | * | 2227 | * |
2231 | * LOCKING: | 2228 | * LOCKING: |
2232 | * None. | 2229 | * None. |
2233 | */ | 2230 | */ |
2234 | static void modecpy(u8 *dest, const u8 *src, int n, bool changeable) | 2231 | static void modecpy(u8 *dest, const u8 *src, int n, bool changeable) |
2235 | { | 2232 | { |
2236 | if (changeable) { | 2233 | if (changeable) { |
2237 | memcpy(dest, src, 2); | 2234 | memcpy(dest, src, 2); |
2238 | memset(dest + 2, 0, n - 2); | 2235 | memset(dest + 2, 0, n - 2); |
2239 | } else { | 2236 | } else { |
2240 | memcpy(dest, src, n); | 2237 | memcpy(dest, src, n); |
2241 | } | 2238 | } |
2242 | } | 2239 | } |
2243 | 2240 | ||
2244 | /** | 2241 | /** |
2245 | * ata_msense_caching - Simulate MODE SENSE caching info page | 2242 | * ata_msense_caching - Simulate MODE SENSE caching info page |
2246 | * @id: device IDENTIFY data | 2243 | * @id: device IDENTIFY data |
2247 | * @buf: output buffer | 2244 | * @buf: output buffer |
2248 | * @changeable: whether changeable parameters are requested | 2245 | * @changeable: whether changeable parameters are requested |
2249 | * | 2246 | * |
2250 | * Generate a caching info page, which conditionally indicates | 2247 | * Generate a caching info page, which conditionally indicates |
2251 | * write caching to the SCSI layer, depending on device | 2248 | * write caching to the SCSI layer, depending on device |
2252 | * capabilities. | 2249 | * capabilities. |
2253 | * | 2250 | * |
2254 | * LOCKING: | 2251 | * LOCKING: |
2255 | * None. | 2252 | * None. |
2256 | */ | 2253 | */ |
2257 | static unsigned int ata_msense_caching(u16 *id, u8 *buf, bool changeable) | 2254 | static unsigned int ata_msense_caching(u16 *id, u8 *buf, bool changeable) |
2258 | { | 2255 | { |
2259 | modecpy(buf, def_cache_mpage, sizeof(def_cache_mpage), changeable); | 2256 | modecpy(buf, def_cache_mpage, sizeof(def_cache_mpage), changeable); |
2260 | if (changeable || ata_id_wcache_enabled(id)) | 2257 | if (changeable || ata_id_wcache_enabled(id)) |
2261 | buf[2] |= (1 << 2); /* write cache enable */ | 2258 | buf[2] |= (1 << 2); /* write cache enable */ |
2262 | if (!changeable && !ata_id_rahead_enabled(id)) | 2259 | if (!changeable && !ata_id_rahead_enabled(id)) |
2263 | buf[12] |= (1 << 5); /* disable read ahead */ | 2260 | buf[12] |= (1 << 5); /* disable read ahead */ |
2264 | return sizeof(def_cache_mpage); | 2261 | return sizeof(def_cache_mpage); |
2265 | } | 2262 | } |
2266 | 2263 | ||
2267 | /** | 2264 | /** |
2268 | * ata_msense_ctl_mode - Simulate MODE SENSE control mode page | 2265 | * ata_msense_ctl_mode - Simulate MODE SENSE control mode page |
2269 | * @buf: output buffer | 2266 | * @buf: output buffer |
2270 | * @changeable: whether changeable parameters are requested | 2267 | * @changeable: whether changeable parameters are requested |
2271 | * | 2268 | * |
2272 | * Generate a generic MODE SENSE control mode page. | 2269 | * Generate a generic MODE SENSE control mode page. |
2273 | * | 2270 | * |
2274 | * LOCKING: | 2271 | * LOCKING: |
2275 | * None. | 2272 | * None. |
2276 | */ | 2273 | */ |
2277 | static unsigned int ata_msense_ctl_mode(u8 *buf, bool changeable) | 2274 | static unsigned int ata_msense_ctl_mode(u8 *buf, bool changeable) |
2278 | { | 2275 | { |
2279 | modecpy(buf, def_control_mpage, sizeof(def_control_mpage), changeable); | 2276 | modecpy(buf, def_control_mpage, sizeof(def_control_mpage), changeable); |
2280 | return sizeof(def_control_mpage); | 2277 | return sizeof(def_control_mpage); |
2281 | } | 2278 | } |
2282 | 2279 | ||
2283 | /** | 2280 | /** |
2284 | * ata_msense_rw_recovery - Simulate MODE SENSE r/w error recovery page | 2281 | * ata_msense_rw_recovery - Simulate MODE SENSE r/w error recovery page |
2285 | * @buf: output buffer | 2282 | * @buf: output buffer |
2286 | * @changeable: whether changeable parameters are requested | 2283 | * @changeable: whether changeable parameters are requested |
2287 | * | 2284 | * |
2288 | * Generate a generic MODE SENSE r/w error recovery page. | 2285 | * Generate a generic MODE SENSE r/w error recovery page. |
2289 | * | 2286 | * |
2290 | * LOCKING: | 2287 | * LOCKING: |
2291 | * None. | 2288 | * None. |
2292 | */ | 2289 | */ |
2293 | static unsigned int ata_msense_rw_recovery(u8 *buf, bool changeable) | 2290 | static unsigned int ata_msense_rw_recovery(u8 *buf, bool changeable) |
2294 | { | 2291 | { |
2295 | modecpy(buf, def_rw_recovery_mpage, sizeof(def_rw_recovery_mpage), | 2292 | modecpy(buf, def_rw_recovery_mpage, sizeof(def_rw_recovery_mpage), |
2296 | changeable); | 2293 | changeable); |
2297 | return sizeof(def_rw_recovery_mpage); | 2294 | return sizeof(def_rw_recovery_mpage); |
2298 | } | 2295 | } |
2299 | 2296 | ||
2300 | /* | 2297 | /* |
2301 | * We can turn this into a real blacklist if it's needed, for now just | 2298 | * We can turn this into a real blacklist if it's needed, for now just |
2302 | * blacklist any Maxtor BANC1G10 revision firmware | 2299 | * blacklist any Maxtor BANC1G10 revision firmware |
2303 | */ | 2300 | */ |
2304 | static int ata_dev_supports_fua(u16 *id) | 2301 | static int ata_dev_supports_fua(u16 *id) |
2305 | { | 2302 | { |
2306 | unsigned char model[ATA_ID_PROD_LEN + 1], fw[ATA_ID_FW_REV_LEN + 1]; | 2303 | unsigned char model[ATA_ID_PROD_LEN + 1], fw[ATA_ID_FW_REV_LEN + 1]; |
2307 | 2304 | ||
2308 | if (!libata_fua) | 2305 | if (!libata_fua) |
2309 | return 0; | 2306 | return 0; |
2310 | if (!ata_id_has_fua(id)) | 2307 | if (!ata_id_has_fua(id)) |
2311 | return 0; | 2308 | return 0; |
2312 | 2309 | ||
2313 | ata_id_c_string(id, model, ATA_ID_PROD, sizeof(model)); | 2310 | ata_id_c_string(id, model, ATA_ID_PROD, sizeof(model)); |
2314 | ata_id_c_string(id, fw, ATA_ID_FW_REV, sizeof(fw)); | 2311 | ata_id_c_string(id, fw, ATA_ID_FW_REV, sizeof(fw)); |
2315 | 2312 | ||
2316 | if (strcmp(model, "Maxtor")) | 2313 | if (strcmp(model, "Maxtor")) |
2317 | return 1; | 2314 | return 1; |
2318 | if (strcmp(fw, "BANC1G10")) | 2315 | if (strcmp(fw, "BANC1G10")) |
2319 | return 1; | 2316 | return 1; |
2320 | 2317 | ||
2321 | return 0; /* blacklisted */ | 2318 | return 0; /* blacklisted */ |
2322 | } | 2319 | } |
2323 | 2320 | ||
2324 | /** | 2321 | /** |
2325 | * ata_scsiop_mode_sense - Simulate MODE SENSE 6, 10 commands | 2322 | * ata_scsiop_mode_sense - Simulate MODE SENSE 6, 10 commands |
2326 | * @args: device IDENTIFY data / SCSI command of interest. | 2323 | * @args: device IDENTIFY data / SCSI command of interest. |
2327 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | 2324 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. |
2328 | * | 2325 | * |
2329 | * Simulate MODE SENSE commands. Assume this is invoked for direct | 2326 | * Simulate MODE SENSE commands. Assume this is invoked for direct |
2330 | * access devices (e.g. disks) only. There should be no block | 2327 | * access devices (e.g. disks) only. There should be no block |
2331 | * descriptor for other device types. | 2328 | * descriptor for other device types. |
2332 | * | 2329 | * |
2333 | * LOCKING: | 2330 | * LOCKING: |
2334 | * spin_lock_irqsave(host lock) | 2331 | * spin_lock_irqsave(host lock) |
2335 | */ | 2332 | */ |
2336 | static unsigned int ata_scsiop_mode_sense(struct ata_scsi_args *args, u8 *rbuf) | 2333 | static unsigned int ata_scsiop_mode_sense(struct ata_scsi_args *args, u8 *rbuf) |
2337 | { | 2334 | { |
2338 | struct ata_device *dev = args->dev; | 2335 | struct ata_device *dev = args->dev; |
2339 | u8 *scsicmd = args->cmd->cmnd, *p = rbuf; | 2336 | u8 *scsicmd = args->cmd->cmnd, *p = rbuf; |
2340 | const u8 sat_blk_desc[] = { | 2337 | const u8 sat_blk_desc[] = { |
2341 | 0, 0, 0, 0, /* number of blocks: sat unspecified */ | 2338 | 0, 0, 0, 0, /* number of blocks: sat unspecified */ |
2342 | 0, | 2339 | 0, |
2343 | 0, 0x2, 0x0 /* block length: 512 bytes */ | 2340 | 0, 0x2, 0x0 /* block length: 512 bytes */ |
2344 | }; | 2341 | }; |
2345 | u8 pg, spg; | 2342 | u8 pg, spg; |
2346 | unsigned int ebd, page_control, six_byte; | 2343 | unsigned int ebd, page_control, six_byte; |
2347 | u8 dpofua; | 2344 | u8 dpofua; |
2348 | 2345 | ||
2349 | VPRINTK("ENTER\n"); | 2346 | VPRINTK("ENTER\n"); |
2350 | 2347 | ||
2351 | six_byte = (scsicmd[0] == MODE_SENSE); | 2348 | six_byte = (scsicmd[0] == MODE_SENSE); |
2352 | ebd = !(scsicmd[1] & 0x8); /* dbd bit inverted == edb */ | 2349 | ebd = !(scsicmd[1] & 0x8); /* dbd bit inverted == edb */ |
2353 | /* | 2350 | /* |
2354 | * LLBA bit in msense(10) ignored (compliant) | 2351 | * LLBA bit in msense(10) ignored (compliant) |
2355 | */ | 2352 | */ |
2356 | 2353 | ||
2357 | page_control = scsicmd[2] >> 6; | 2354 | page_control = scsicmd[2] >> 6; |
2358 | switch (page_control) { | 2355 | switch (page_control) { |
2359 | case 0: /* current */ | 2356 | case 0: /* current */ |
2360 | case 1: /* changeable */ | 2357 | case 1: /* changeable */ |
2361 | case 2: /* defaults */ | 2358 | case 2: /* defaults */ |
2362 | break; /* supported */ | 2359 | break; /* supported */ |
2363 | case 3: /* saved */ | 2360 | case 3: /* saved */ |
2364 | goto saving_not_supp; | 2361 | goto saving_not_supp; |
2365 | default: | 2362 | default: |
2366 | goto invalid_fld; | 2363 | goto invalid_fld; |
2367 | } | 2364 | } |
2368 | 2365 | ||
2369 | if (six_byte) | 2366 | if (six_byte) |
2370 | p += 4 + (ebd ? 8 : 0); | 2367 | p += 4 + (ebd ? 8 : 0); |
2371 | else | 2368 | else |
2372 | p += 8 + (ebd ? 8 : 0); | 2369 | p += 8 + (ebd ? 8 : 0); |
2373 | 2370 | ||
2374 | pg = scsicmd[2] & 0x3f; | 2371 | pg = scsicmd[2] & 0x3f; |
2375 | spg = scsicmd[3]; | 2372 | spg = scsicmd[3]; |
2376 | /* | 2373 | /* |
2377 | * No mode subpages supported (yet) but asking for _all_ | 2374 | * No mode subpages supported (yet) but asking for _all_ |
2378 | * subpages may be valid | 2375 | * subpages may be valid |
2379 | */ | 2376 | */ |
2380 | if (spg && (spg != ALL_SUB_MPAGES)) | 2377 | if (spg && (spg != ALL_SUB_MPAGES)) |
2381 | goto invalid_fld; | 2378 | goto invalid_fld; |
2382 | 2379 | ||
2383 | switch(pg) { | 2380 | switch(pg) { |
2384 | case RW_RECOVERY_MPAGE: | 2381 | case RW_RECOVERY_MPAGE: |
2385 | p += ata_msense_rw_recovery(p, page_control == 1); | 2382 | p += ata_msense_rw_recovery(p, page_control == 1); |
2386 | break; | 2383 | break; |
2387 | 2384 | ||
2388 | case CACHE_MPAGE: | 2385 | case CACHE_MPAGE: |
2389 | p += ata_msense_caching(args->id, p, page_control == 1); | 2386 | p += ata_msense_caching(args->id, p, page_control == 1); |
2390 | break; | 2387 | break; |
2391 | 2388 | ||
2392 | case CONTROL_MPAGE: | 2389 | case CONTROL_MPAGE: |
2393 | p += ata_msense_ctl_mode(p, page_control == 1); | 2390 | p += ata_msense_ctl_mode(p, page_control == 1); |
2394 | break; | 2391 | break; |
2395 | 2392 | ||
2396 | case ALL_MPAGES: | 2393 | case ALL_MPAGES: |
2397 | p += ata_msense_rw_recovery(p, page_control == 1); | 2394 | p += ata_msense_rw_recovery(p, page_control == 1); |
2398 | p += ata_msense_caching(args->id, p, page_control == 1); | 2395 | p += ata_msense_caching(args->id, p, page_control == 1); |
2399 | p += ata_msense_ctl_mode(p, page_control == 1); | 2396 | p += ata_msense_ctl_mode(p, page_control == 1); |
2400 | break; | 2397 | break; |
2401 | 2398 | ||
2402 | default: /* invalid page code */ | 2399 | default: /* invalid page code */ |
2403 | goto invalid_fld; | 2400 | goto invalid_fld; |
2404 | } | 2401 | } |
2405 | 2402 | ||
2406 | dpofua = 0; | 2403 | dpofua = 0; |
2407 | if (ata_dev_supports_fua(args->id) && (dev->flags & ATA_DFLAG_LBA48) && | 2404 | if (ata_dev_supports_fua(args->id) && (dev->flags & ATA_DFLAG_LBA48) && |
2408 | (!(dev->flags & ATA_DFLAG_PIO) || dev->multi_count)) | 2405 | (!(dev->flags & ATA_DFLAG_PIO) || dev->multi_count)) |
2409 | dpofua = 1 << 4; | 2406 | dpofua = 1 << 4; |
2410 | 2407 | ||
2411 | if (six_byte) { | 2408 | if (six_byte) { |
2412 | rbuf[0] = p - rbuf - 1; | 2409 | rbuf[0] = p - rbuf - 1; |
2413 | rbuf[2] |= dpofua; | 2410 | rbuf[2] |= dpofua; |
2414 | if (ebd) { | 2411 | if (ebd) { |
2415 | rbuf[3] = sizeof(sat_blk_desc); | 2412 | rbuf[3] = sizeof(sat_blk_desc); |
2416 | memcpy(rbuf + 4, sat_blk_desc, sizeof(sat_blk_desc)); | 2413 | memcpy(rbuf + 4, sat_blk_desc, sizeof(sat_blk_desc)); |
2417 | } | 2414 | } |
2418 | } else { | 2415 | } else { |
2419 | unsigned int output_len = p - rbuf - 2; | 2416 | unsigned int output_len = p - rbuf - 2; |
2420 | 2417 | ||
2421 | rbuf[0] = output_len >> 8; | 2418 | rbuf[0] = output_len >> 8; |
2422 | rbuf[1] = output_len; | 2419 | rbuf[1] = output_len; |
2423 | rbuf[3] |= dpofua; | 2420 | rbuf[3] |= dpofua; |
2424 | if (ebd) { | 2421 | if (ebd) { |
2425 | rbuf[7] = sizeof(sat_blk_desc); | 2422 | rbuf[7] = sizeof(sat_blk_desc); |
2426 | memcpy(rbuf + 8, sat_blk_desc, sizeof(sat_blk_desc)); | 2423 | memcpy(rbuf + 8, sat_blk_desc, sizeof(sat_blk_desc)); |
2427 | } | 2424 | } |
2428 | } | 2425 | } |
2429 | return 0; | 2426 | return 0; |
2430 | 2427 | ||
2431 | invalid_fld: | 2428 | invalid_fld: |
2432 | ata_scsi_set_sense(args->cmd, ILLEGAL_REQUEST, 0x24, 0x0); | 2429 | ata_scsi_set_sense(args->cmd, ILLEGAL_REQUEST, 0x24, 0x0); |
2433 | /* "Invalid field in cbd" */ | 2430 | /* "Invalid field in cbd" */ |
2434 | return 1; | 2431 | return 1; |
2435 | 2432 | ||
2436 | saving_not_supp: | 2433 | saving_not_supp: |
2437 | ata_scsi_set_sense(args->cmd, ILLEGAL_REQUEST, 0x39, 0x0); | 2434 | ata_scsi_set_sense(args->cmd, ILLEGAL_REQUEST, 0x39, 0x0); |
2438 | /* "Saving parameters not supported" */ | 2435 | /* "Saving parameters not supported" */ |
2439 | return 1; | 2436 | return 1; |
2440 | } | 2437 | } |
2441 | 2438 | ||
2442 | /** | 2439 | /** |
2443 | * ata_scsiop_read_cap - Simulate READ CAPACITY[ 16] commands | 2440 | * ata_scsiop_read_cap - Simulate READ CAPACITY[ 16] commands |
2444 | * @args: device IDENTIFY data / SCSI command of interest. | 2441 | * @args: device IDENTIFY data / SCSI command of interest. |
2445 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | 2442 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. |
2446 | * | 2443 | * |
2447 | * Simulate READ CAPACITY commands. | 2444 | * Simulate READ CAPACITY commands. |
2448 | * | 2445 | * |
2449 | * LOCKING: | 2446 | * LOCKING: |
2450 | * None. | 2447 | * None. |
2451 | */ | 2448 | */ |
2452 | static unsigned int ata_scsiop_read_cap(struct ata_scsi_args *args, u8 *rbuf) | 2449 | static unsigned int ata_scsiop_read_cap(struct ata_scsi_args *args, u8 *rbuf) |
2453 | { | 2450 | { |
2454 | struct ata_device *dev = args->dev; | 2451 | struct ata_device *dev = args->dev; |
2455 | u64 last_lba = dev->n_sectors - 1; /* LBA of the last block */ | 2452 | u64 last_lba = dev->n_sectors - 1; /* LBA of the last block */ |
2456 | u32 sector_size; /* physical sector size in bytes */ | 2453 | u32 sector_size; /* physical sector size in bytes */ |
2457 | u8 log2_per_phys; | 2454 | u8 log2_per_phys; |
2458 | u16 lowest_aligned; | 2455 | u16 lowest_aligned; |
2459 | 2456 | ||
2460 | sector_size = ata_id_logical_sector_size(dev->id); | 2457 | sector_size = ata_id_logical_sector_size(dev->id); |
2461 | log2_per_phys = ata_id_log2_per_physical_sector(dev->id); | 2458 | log2_per_phys = ata_id_log2_per_physical_sector(dev->id); |
2462 | lowest_aligned = ata_id_logical_sector_offset(dev->id, log2_per_phys); | 2459 | lowest_aligned = ata_id_logical_sector_offset(dev->id, log2_per_phys); |
2463 | 2460 | ||
2464 | VPRINTK("ENTER\n"); | 2461 | VPRINTK("ENTER\n"); |
2465 | 2462 | ||
2466 | if (args->cmd->cmnd[0] == READ_CAPACITY) { | 2463 | if (args->cmd->cmnd[0] == READ_CAPACITY) { |
2467 | if (last_lba >= 0xffffffffULL) | 2464 | if (last_lba >= 0xffffffffULL) |
2468 | last_lba = 0xffffffff; | 2465 | last_lba = 0xffffffff; |
2469 | 2466 | ||
2470 | /* sector count, 32-bit */ | 2467 | /* sector count, 32-bit */ |
2471 | rbuf[0] = last_lba >> (8 * 3); | 2468 | rbuf[0] = last_lba >> (8 * 3); |
2472 | rbuf[1] = last_lba >> (8 * 2); | 2469 | rbuf[1] = last_lba >> (8 * 2); |
2473 | rbuf[2] = last_lba >> (8 * 1); | 2470 | rbuf[2] = last_lba >> (8 * 1); |
2474 | rbuf[3] = last_lba; | 2471 | rbuf[3] = last_lba; |
2475 | 2472 | ||
2476 | /* sector size */ | 2473 | /* sector size */ |
2477 | rbuf[4] = sector_size >> (8 * 3); | 2474 | rbuf[4] = sector_size >> (8 * 3); |
2478 | rbuf[5] = sector_size >> (8 * 2); | 2475 | rbuf[5] = sector_size >> (8 * 2); |
2479 | rbuf[6] = sector_size >> (8 * 1); | 2476 | rbuf[6] = sector_size >> (8 * 1); |
2480 | rbuf[7] = sector_size; | 2477 | rbuf[7] = sector_size; |
2481 | } else { | 2478 | } else { |
2482 | /* sector count, 64-bit */ | 2479 | /* sector count, 64-bit */ |
2483 | rbuf[0] = last_lba >> (8 * 7); | 2480 | rbuf[0] = last_lba >> (8 * 7); |
2484 | rbuf[1] = last_lba >> (8 * 6); | 2481 | rbuf[1] = last_lba >> (8 * 6); |
2485 | rbuf[2] = last_lba >> (8 * 5); | 2482 | rbuf[2] = last_lba >> (8 * 5); |
2486 | rbuf[3] = last_lba >> (8 * 4); | 2483 | rbuf[3] = last_lba >> (8 * 4); |
2487 | rbuf[4] = last_lba >> (8 * 3); | 2484 | rbuf[4] = last_lba >> (8 * 3); |
2488 | rbuf[5] = last_lba >> (8 * 2); | 2485 | rbuf[5] = last_lba >> (8 * 2); |
2489 | rbuf[6] = last_lba >> (8 * 1); | 2486 | rbuf[6] = last_lba >> (8 * 1); |
2490 | rbuf[7] = last_lba; | 2487 | rbuf[7] = last_lba; |
2491 | 2488 | ||
2492 | /* sector size */ | 2489 | /* sector size */ |
2493 | rbuf[ 8] = sector_size >> (8 * 3); | 2490 | rbuf[ 8] = sector_size >> (8 * 3); |
2494 | rbuf[ 9] = sector_size >> (8 * 2); | 2491 | rbuf[ 9] = sector_size >> (8 * 2); |
2495 | rbuf[10] = sector_size >> (8 * 1); | 2492 | rbuf[10] = sector_size >> (8 * 1); |
2496 | rbuf[11] = sector_size; | 2493 | rbuf[11] = sector_size; |
2497 | 2494 | ||
2498 | rbuf[12] = 0; | 2495 | rbuf[12] = 0; |
2499 | rbuf[13] = log2_per_phys; | 2496 | rbuf[13] = log2_per_phys; |
2500 | rbuf[14] = (lowest_aligned >> 8) & 0x3f; | 2497 | rbuf[14] = (lowest_aligned >> 8) & 0x3f; |
2501 | rbuf[15] = lowest_aligned; | 2498 | rbuf[15] = lowest_aligned; |
2502 | 2499 | ||
2503 | if (ata_id_has_trim(args->id)) { | 2500 | if (ata_id_has_trim(args->id)) { |
2504 | rbuf[14] |= 0x80; /* TPE */ | 2501 | rbuf[14] |= 0x80; /* TPE */ |
2505 | 2502 | ||
2506 | if (ata_id_has_zero_after_trim(args->id)) | 2503 | if (ata_id_has_zero_after_trim(args->id)) |
2507 | rbuf[14] |= 0x40; /* TPRZ */ | 2504 | rbuf[14] |= 0x40; /* TPRZ */ |
2508 | } | 2505 | } |
2509 | } | 2506 | } |
2510 | 2507 | ||
2511 | return 0; | 2508 | return 0; |
2512 | } | 2509 | } |
2513 | 2510 | ||
2514 | /** | 2511 | /** |
2515 | * ata_scsiop_report_luns - Simulate REPORT LUNS command | 2512 | * ata_scsiop_report_luns - Simulate REPORT LUNS command |
2516 | * @args: device IDENTIFY data / SCSI command of interest. | 2513 | * @args: device IDENTIFY data / SCSI command of interest. |
2517 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | 2514 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. |
2518 | * | 2515 | * |
2519 | * Simulate REPORT LUNS command. | 2516 | * Simulate REPORT LUNS command. |
2520 | * | 2517 | * |
2521 | * LOCKING: | 2518 | * LOCKING: |
2522 | * spin_lock_irqsave(host lock) | 2519 | * spin_lock_irqsave(host lock) |
2523 | */ | 2520 | */ |
2524 | static unsigned int ata_scsiop_report_luns(struct ata_scsi_args *args, u8 *rbuf) | 2521 | static unsigned int ata_scsiop_report_luns(struct ata_scsi_args *args, u8 *rbuf) |
2525 | { | 2522 | { |
2526 | VPRINTK("ENTER\n"); | 2523 | VPRINTK("ENTER\n"); |
2527 | rbuf[3] = 8; /* just one lun, LUN 0, size 8 bytes */ | 2524 | rbuf[3] = 8; /* just one lun, LUN 0, size 8 bytes */ |
2528 | 2525 | ||
2529 | return 0; | 2526 | return 0; |
2530 | } | 2527 | } |
2531 | 2528 | ||
2532 | static void atapi_sense_complete(struct ata_queued_cmd *qc) | 2529 | static void atapi_sense_complete(struct ata_queued_cmd *qc) |
2533 | { | 2530 | { |
2534 | if (qc->err_mask && ((qc->err_mask & AC_ERR_DEV) == 0)) { | 2531 | if (qc->err_mask && ((qc->err_mask & AC_ERR_DEV) == 0)) { |
2535 | /* FIXME: not quite right; we don't want the | 2532 | /* FIXME: not quite right; we don't want the |
2536 | * translation of taskfile registers into | 2533 | * translation of taskfile registers into |
2537 | * a sense descriptors, since that's only | 2534 | * a sense descriptors, since that's only |
2538 | * correct for ATA, not ATAPI | 2535 | * correct for ATA, not ATAPI |
2539 | */ | 2536 | */ |
2540 | ata_gen_passthru_sense(qc); | 2537 | ata_gen_passthru_sense(qc); |
2541 | } | 2538 | } |
2542 | 2539 | ||
2543 | qc->scsidone(qc->scsicmd); | 2540 | qc->scsidone(qc->scsicmd); |
2544 | ata_qc_free(qc); | 2541 | ata_qc_free(qc); |
2545 | } | 2542 | } |
2546 | 2543 | ||
2547 | /* is it pointless to prefer PIO for "safety reasons"? */ | 2544 | /* is it pointless to prefer PIO for "safety reasons"? */ |
2548 | static inline int ata_pio_use_silly(struct ata_port *ap) | 2545 | static inline int ata_pio_use_silly(struct ata_port *ap) |
2549 | { | 2546 | { |
2550 | return (ap->flags & ATA_FLAG_PIO_DMA); | 2547 | return (ap->flags & ATA_FLAG_PIO_DMA); |
2551 | } | 2548 | } |
2552 | 2549 | ||
2553 | static void atapi_request_sense(struct ata_queued_cmd *qc) | 2550 | static void atapi_request_sense(struct ata_queued_cmd *qc) |
2554 | { | 2551 | { |
2555 | struct ata_port *ap = qc->ap; | 2552 | struct ata_port *ap = qc->ap; |
2556 | struct scsi_cmnd *cmd = qc->scsicmd; | 2553 | struct scsi_cmnd *cmd = qc->scsicmd; |
2557 | 2554 | ||
2558 | DPRINTK("ATAPI request sense\n"); | 2555 | DPRINTK("ATAPI request sense\n"); |
2559 | 2556 | ||
2560 | /* FIXME: is this needed? */ | 2557 | /* FIXME: is this needed? */ |
2561 | memset(cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE); | 2558 | memset(cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE); |
2562 | 2559 | ||
2563 | #ifdef CONFIG_ATA_SFF | 2560 | #ifdef CONFIG_ATA_SFF |
2564 | if (ap->ops->sff_tf_read) | 2561 | if (ap->ops->sff_tf_read) |
2565 | ap->ops->sff_tf_read(ap, &qc->tf); | 2562 | ap->ops->sff_tf_read(ap, &qc->tf); |
2566 | #endif | 2563 | #endif |
2567 | 2564 | ||
2568 | /* fill these in, for the case where they are -not- overwritten */ | 2565 | /* fill these in, for the case where they are -not- overwritten */ |
2569 | cmd->sense_buffer[0] = 0x70; | 2566 | cmd->sense_buffer[0] = 0x70; |
2570 | cmd->sense_buffer[2] = qc->tf.feature >> 4; | 2567 | cmd->sense_buffer[2] = qc->tf.feature >> 4; |
2571 | 2568 | ||
2572 | ata_qc_reinit(qc); | 2569 | ata_qc_reinit(qc); |
2573 | 2570 | ||
2574 | /* setup sg table and init transfer direction */ | 2571 | /* setup sg table and init transfer direction */ |
2575 | sg_init_one(&qc->sgent, cmd->sense_buffer, SCSI_SENSE_BUFFERSIZE); | 2572 | sg_init_one(&qc->sgent, cmd->sense_buffer, SCSI_SENSE_BUFFERSIZE); |
2576 | ata_sg_init(qc, &qc->sgent, 1); | 2573 | ata_sg_init(qc, &qc->sgent, 1); |
2577 | qc->dma_dir = DMA_FROM_DEVICE; | 2574 | qc->dma_dir = DMA_FROM_DEVICE; |
2578 | 2575 | ||
2579 | memset(&qc->cdb, 0, qc->dev->cdb_len); | 2576 | memset(&qc->cdb, 0, qc->dev->cdb_len); |
2580 | qc->cdb[0] = REQUEST_SENSE; | 2577 | qc->cdb[0] = REQUEST_SENSE; |
2581 | qc->cdb[4] = SCSI_SENSE_BUFFERSIZE; | 2578 | qc->cdb[4] = SCSI_SENSE_BUFFERSIZE; |
2582 | 2579 | ||
2583 | qc->tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; | 2580 | qc->tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; |
2584 | qc->tf.command = ATA_CMD_PACKET; | 2581 | qc->tf.command = ATA_CMD_PACKET; |
2585 | 2582 | ||
2586 | if (ata_pio_use_silly(ap)) { | 2583 | if (ata_pio_use_silly(ap)) { |
2587 | qc->tf.protocol = ATAPI_PROT_DMA; | 2584 | qc->tf.protocol = ATAPI_PROT_DMA; |
2588 | qc->tf.feature |= ATAPI_PKT_DMA; | 2585 | qc->tf.feature |= ATAPI_PKT_DMA; |
2589 | } else { | 2586 | } else { |
2590 | qc->tf.protocol = ATAPI_PROT_PIO; | 2587 | qc->tf.protocol = ATAPI_PROT_PIO; |
2591 | qc->tf.lbam = SCSI_SENSE_BUFFERSIZE; | 2588 | qc->tf.lbam = SCSI_SENSE_BUFFERSIZE; |
2592 | qc->tf.lbah = 0; | 2589 | qc->tf.lbah = 0; |
2593 | } | 2590 | } |
2594 | qc->nbytes = SCSI_SENSE_BUFFERSIZE; | 2591 | qc->nbytes = SCSI_SENSE_BUFFERSIZE; |
2595 | 2592 | ||
2596 | qc->complete_fn = atapi_sense_complete; | 2593 | qc->complete_fn = atapi_sense_complete; |
2597 | 2594 | ||
2598 | ata_qc_issue(qc); | 2595 | ata_qc_issue(qc); |
2599 | 2596 | ||
2600 | DPRINTK("EXIT\n"); | 2597 | DPRINTK("EXIT\n"); |
2601 | } | 2598 | } |
2602 | 2599 | ||
2603 | static void atapi_qc_complete(struct ata_queued_cmd *qc) | 2600 | static void atapi_qc_complete(struct ata_queued_cmd *qc) |
2604 | { | 2601 | { |
2605 | struct scsi_cmnd *cmd = qc->scsicmd; | 2602 | struct scsi_cmnd *cmd = qc->scsicmd; |
2606 | unsigned int err_mask = qc->err_mask; | 2603 | unsigned int err_mask = qc->err_mask; |
2607 | 2604 | ||
2608 | VPRINTK("ENTER, err_mask 0x%X\n", err_mask); | 2605 | VPRINTK("ENTER, err_mask 0x%X\n", err_mask); |
2609 | 2606 | ||
2610 | /* handle completion from new EH */ | 2607 | /* handle completion from new EH */ |
2611 | if (unlikely(qc->ap->ops->error_handler && | 2608 | if (unlikely(qc->ap->ops->error_handler && |
2612 | (err_mask || qc->flags & ATA_QCFLAG_SENSE_VALID))) { | 2609 | (err_mask || qc->flags & ATA_QCFLAG_SENSE_VALID))) { |
2613 | 2610 | ||
2614 | if (!(qc->flags & ATA_QCFLAG_SENSE_VALID)) { | 2611 | if (!(qc->flags & ATA_QCFLAG_SENSE_VALID)) { |
2615 | /* FIXME: not quite right; we don't want the | 2612 | /* FIXME: not quite right; we don't want the |
2616 | * translation of taskfile registers into a | 2613 | * translation of taskfile registers into a |
2617 | * sense descriptors, since that's only | 2614 | * sense descriptors, since that's only |
2618 | * correct for ATA, not ATAPI | 2615 | * correct for ATA, not ATAPI |
2619 | */ | 2616 | */ |
2620 | ata_gen_passthru_sense(qc); | 2617 | ata_gen_passthru_sense(qc); |
2621 | } | 2618 | } |
2622 | 2619 | ||
2623 | /* SCSI EH automatically locks door if sdev->locked is | 2620 | /* SCSI EH automatically locks door if sdev->locked is |
2624 | * set. Sometimes door lock request continues to | 2621 | * set. Sometimes door lock request continues to |
2625 | * fail, for example, when no media is present. This | 2622 | * fail, for example, when no media is present. This |
2626 | * creates a loop - SCSI EH issues door lock which | 2623 | * creates a loop - SCSI EH issues door lock which |
2627 | * fails and gets invoked again to acquire sense data | 2624 | * fails and gets invoked again to acquire sense data |
2628 | * for the failed command. | 2625 | * for the failed command. |
2629 | * | 2626 | * |
2630 | * If door lock fails, always clear sdev->locked to | 2627 | * If door lock fails, always clear sdev->locked to |
2631 | * avoid this infinite loop. | 2628 | * avoid this infinite loop. |
2632 | * | 2629 | * |
2633 | * This may happen before SCSI scan is complete. Make | 2630 | * This may happen before SCSI scan is complete. Make |
2634 | * sure qc->dev->sdev isn't NULL before dereferencing. | 2631 | * sure qc->dev->sdev isn't NULL before dereferencing. |
2635 | */ | 2632 | */ |
2636 | if (qc->cdb[0] == ALLOW_MEDIUM_REMOVAL && qc->dev->sdev) | 2633 | if (qc->cdb[0] == ALLOW_MEDIUM_REMOVAL && qc->dev->sdev) |
2637 | qc->dev->sdev->locked = 0; | 2634 | qc->dev->sdev->locked = 0; |
2638 | 2635 | ||
2639 | qc->scsicmd->result = SAM_STAT_CHECK_CONDITION; | 2636 | qc->scsicmd->result = SAM_STAT_CHECK_CONDITION; |
2640 | qc->scsidone(cmd); | 2637 | qc->scsidone(cmd); |
2641 | ata_qc_free(qc); | 2638 | ata_qc_free(qc); |
2642 | return; | 2639 | return; |
2643 | } | 2640 | } |
2644 | 2641 | ||
2645 | /* successful completion or old EH failure path */ | 2642 | /* successful completion or old EH failure path */ |
2646 | if (unlikely(err_mask & AC_ERR_DEV)) { | 2643 | if (unlikely(err_mask & AC_ERR_DEV)) { |
2647 | cmd->result = SAM_STAT_CHECK_CONDITION; | 2644 | cmd->result = SAM_STAT_CHECK_CONDITION; |
2648 | atapi_request_sense(qc); | 2645 | atapi_request_sense(qc); |
2649 | return; | 2646 | return; |
2650 | } else if (unlikely(err_mask)) { | 2647 | } else if (unlikely(err_mask)) { |
2651 | /* FIXME: not quite right; we don't want the | 2648 | /* FIXME: not quite right; we don't want the |
2652 | * translation of taskfile registers into | 2649 | * translation of taskfile registers into |
2653 | * a sense descriptors, since that's only | 2650 | * a sense descriptors, since that's only |
2654 | * correct for ATA, not ATAPI | 2651 | * correct for ATA, not ATAPI |
2655 | */ | 2652 | */ |
2656 | ata_gen_passthru_sense(qc); | 2653 | ata_gen_passthru_sense(qc); |
2657 | } else { | 2654 | } else { |
2658 | u8 *scsicmd = cmd->cmnd; | 2655 | u8 *scsicmd = cmd->cmnd; |
2659 | 2656 | ||
2660 | if ((scsicmd[0] == INQUIRY) && ((scsicmd[1] & 0x03) == 0)) { | 2657 | if ((scsicmd[0] == INQUIRY) && ((scsicmd[1] & 0x03) == 0)) { |
2661 | unsigned long flags; | 2658 | unsigned long flags; |
2662 | u8 *buf; | 2659 | u8 *buf; |
2663 | 2660 | ||
2664 | buf = ata_scsi_rbuf_get(cmd, true, &flags); | 2661 | buf = ata_scsi_rbuf_get(cmd, true, &flags); |
2665 | 2662 | ||
2666 | /* ATAPI devices typically report zero for their SCSI version, | 2663 | /* ATAPI devices typically report zero for their SCSI version, |
2667 | * and sometimes deviate from the spec WRT response data | 2664 | * and sometimes deviate from the spec WRT response data |
2668 | * format. If SCSI version is reported as zero like normal, | 2665 | * format. If SCSI version is reported as zero like normal, |
2669 | * then we make the following fixups: 1) Fake MMC-5 version, | 2666 | * then we make the following fixups: 1) Fake MMC-5 version, |
2670 | * to indicate to the Linux scsi midlayer this is a modern | 2667 | * to indicate to the Linux scsi midlayer this is a modern |
2671 | * device. 2) Ensure response data format / ATAPI information | 2668 | * device. 2) Ensure response data format / ATAPI information |
2672 | * are always correct. | 2669 | * are always correct. |
2673 | */ | 2670 | */ |
2674 | if (buf[2] == 0) { | 2671 | if (buf[2] == 0) { |
2675 | buf[2] = 0x5; | 2672 | buf[2] = 0x5; |
2676 | buf[3] = 0x32; | 2673 | buf[3] = 0x32; |
2677 | } | 2674 | } |
2678 | 2675 | ||
2679 | ata_scsi_rbuf_put(cmd, true, &flags); | 2676 | ata_scsi_rbuf_put(cmd, true, &flags); |
2680 | } | 2677 | } |
2681 | 2678 | ||
2682 | cmd->result = SAM_STAT_GOOD; | 2679 | cmd->result = SAM_STAT_GOOD; |
2683 | } | 2680 | } |
2684 | 2681 | ||
2685 | qc->scsidone(cmd); | 2682 | qc->scsidone(cmd); |
2686 | ata_qc_free(qc); | 2683 | ata_qc_free(qc); |
2687 | } | 2684 | } |
2688 | /** | 2685 | /** |
2689 | * atapi_xlat - Initialize PACKET taskfile | 2686 | * atapi_xlat - Initialize PACKET taskfile |
2690 | * @qc: command structure to be initialized | 2687 | * @qc: command structure to be initialized |
2691 | * | 2688 | * |
2692 | * LOCKING: | 2689 | * LOCKING: |
2693 | * spin_lock_irqsave(host lock) | 2690 | * spin_lock_irqsave(host lock) |
2694 | * | 2691 | * |
2695 | * RETURNS: | 2692 | * RETURNS: |
2696 | * Zero on success, non-zero on failure. | 2693 | * Zero on success, non-zero on failure. |
2697 | */ | 2694 | */ |
2698 | static unsigned int atapi_xlat(struct ata_queued_cmd *qc) | 2695 | static unsigned int atapi_xlat(struct ata_queued_cmd *qc) |
2699 | { | 2696 | { |
2700 | struct scsi_cmnd *scmd = qc->scsicmd; | 2697 | struct scsi_cmnd *scmd = qc->scsicmd; |
2701 | struct ata_device *dev = qc->dev; | 2698 | struct ata_device *dev = qc->dev; |
2702 | int nodata = (scmd->sc_data_direction == DMA_NONE); | 2699 | int nodata = (scmd->sc_data_direction == DMA_NONE); |
2703 | int using_pio = !nodata && (dev->flags & ATA_DFLAG_PIO); | 2700 | int using_pio = !nodata && (dev->flags & ATA_DFLAG_PIO); |
2704 | unsigned int nbytes; | 2701 | unsigned int nbytes; |
2705 | 2702 | ||
2706 | memset(qc->cdb, 0, dev->cdb_len); | 2703 | memset(qc->cdb, 0, dev->cdb_len); |
2707 | memcpy(qc->cdb, scmd->cmnd, scmd->cmd_len); | 2704 | memcpy(qc->cdb, scmd->cmnd, scmd->cmd_len); |
2708 | 2705 | ||
2709 | qc->complete_fn = atapi_qc_complete; | 2706 | qc->complete_fn = atapi_qc_complete; |
2710 | 2707 | ||
2711 | qc->tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; | 2708 | qc->tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; |
2712 | if (scmd->sc_data_direction == DMA_TO_DEVICE) { | 2709 | if (scmd->sc_data_direction == DMA_TO_DEVICE) { |
2713 | qc->tf.flags |= ATA_TFLAG_WRITE; | 2710 | qc->tf.flags |= ATA_TFLAG_WRITE; |
2714 | DPRINTK("direction: write\n"); | 2711 | DPRINTK("direction: write\n"); |
2715 | } | 2712 | } |
2716 | 2713 | ||
2717 | qc->tf.command = ATA_CMD_PACKET; | 2714 | qc->tf.command = ATA_CMD_PACKET; |
2718 | ata_qc_set_pc_nbytes(qc); | 2715 | ata_qc_set_pc_nbytes(qc); |
2719 | 2716 | ||
2720 | /* check whether ATAPI DMA is safe */ | 2717 | /* check whether ATAPI DMA is safe */ |
2721 | if (!nodata && !using_pio && atapi_check_dma(qc)) | 2718 | if (!nodata && !using_pio && atapi_check_dma(qc)) |
2722 | using_pio = 1; | 2719 | using_pio = 1; |
2723 | 2720 | ||
2724 | /* Some controller variants snoop this value for Packet | 2721 | /* Some controller variants snoop this value for Packet |
2725 | * transfers to do state machine and FIFO management. Thus we | 2722 | * transfers to do state machine and FIFO management. Thus we |
2726 | * want to set it properly, and for DMA where it is | 2723 | * want to set it properly, and for DMA where it is |
2727 | * effectively meaningless. | 2724 | * effectively meaningless. |
2728 | */ | 2725 | */ |
2729 | nbytes = min(ata_qc_raw_nbytes(qc), (unsigned int)63 * 1024); | 2726 | nbytes = min(ata_qc_raw_nbytes(qc), (unsigned int)63 * 1024); |
2730 | 2727 | ||
2731 | /* Most ATAPI devices which honor transfer chunk size don't | 2728 | /* Most ATAPI devices which honor transfer chunk size don't |
2732 | * behave according to the spec when odd chunk size which | 2729 | * behave according to the spec when odd chunk size which |
2733 | * matches the transfer length is specified. If the number of | 2730 | * matches the transfer length is specified. If the number of |
2734 | * bytes to transfer is 2n+1. According to the spec, what | 2731 | * bytes to transfer is 2n+1. According to the spec, what |
2735 | * should happen is to indicate that 2n+1 is going to be | 2732 | * should happen is to indicate that 2n+1 is going to be |
2736 | * transferred and transfer 2n+2 bytes where the last byte is | 2733 | * transferred and transfer 2n+2 bytes where the last byte is |
2737 | * padding. | 2734 | * padding. |
2738 | * | 2735 | * |
2739 | * In practice, this doesn't happen. ATAPI devices first | 2736 | * In practice, this doesn't happen. ATAPI devices first |
2740 | * indicate and transfer 2n bytes and then indicate and | 2737 | * indicate and transfer 2n bytes and then indicate and |
2741 | * transfer 2 bytes where the last byte is padding. | 2738 | * transfer 2 bytes where the last byte is padding. |
2742 | * | 2739 | * |
2743 | * This inconsistency confuses several controllers which | 2740 | * This inconsistency confuses several controllers which |
2744 | * perform PIO using DMA such as Intel AHCIs and sil3124/32. | 2741 | * perform PIO using DMA such as Intel AHCIs and sil3124/32. |
2745 | * These controllers use actual number of transferred bytes to | 2742 | * These controllers use actual number of transferred bytes to |
2746 | * update DMA poitner and transfer of 4n+2 bytes make those | 2743 | * update DMA poitner and transfer of 4n+2 bytes make those |
2747 | * controller push DMA pointer by 4n+4 bytes because SATA data | 2744 | * controller push DMA pointer by 4n+4 bytes because SATA data |
2748 | * FISes are aligned to 4 bytes. This causes data corruption | 2745 | * FISes are aligned to 4 bytes. This causes data corruption |
2749 | * and buffer overrun. | 2746 | * and buffer overrun. |
2750 | * | 2747 | * |
2751 | * Always setting nbytes to even number solves this problem | 2748 | * Always setting nbytes to even number solves this problem |
2752 | * because then ATAPI devices don't have to split data at 2n | 2749 | * because then ATAPI devices don't have to split data at 2n |
2753 | * boundaries. | 2750 | * boundaries. |
2754 | */ | 2751 | */ |
2755 | if (nbytes & 0x1) | 2752 | if (nbytes & 0x1) |
2756 | nbytes++; | 2753 | nbytes++; |
2757 | 2754 | ||
2758 | qc->tf.lbam = (nbytes & 0xFF); | 2755 | qc->tf.lbam = (nbytes & 0xFF); |
2759 | qc->tf.lbah = (nbytes >> 8); | 2756 | qc->tf.lbah = (nbytes >> 8); |
2760 | 2757 | ||
2761 | if (nodata) | 2758 | if (nodata) |
2762 | qc->tf.protocol = ATAPI_PROT_NODATA; | 2759 | qc->tf.protocol = ATAPI_PROT_NODATA; |
2763 | else if (using_pio) | 2760 | else if (using_pio) |
2764 | qc->tf.protocol = ATAPI_PROT_PIO; | 2761 | qc->tf.protocol = ATAPI_PROT_PIO; |
2765 | else { | 2762 | else { |
2766 | /* DMA data xfer */ | 2763 | /* DMA data xfer */ |
2767 | qc->tf.protocol = ATAPI_PROT_DMA; | 2764 | qc->tf.protocol = ATAPI_PROT_DMA; |
2768 | qc->tf.feature |= ATAPI_PKT_DMA; | 2765 | qc->tf.feature |= ATAPI_PKT_DMA; |
2769 | 2766 | ||
2770 | if ((dev->flags & ATA_DFLAG_DMADIR) && | 2767 | if ((dev->flags & ATA_DFLAG_DMADIR) && |
2771 | (scmd->sc_data_direction != DMA_TO_DEVICE)) | 2768 | (scmd->sc_data_direction != DMA_TO_DEVICE)) |
2772 | /* some SATA bridges need us to indicate data xfer direction */ | 2769 | /* some SATA bridges need us to indicate data xfer direction */ |
2773 | qc->tf.feature |= ATAPI_DMADIR; | 2770 | qc->tf.feature |= ATAPI_DMADIR; |
2774 | } | 2771 | } |
2775 | 2772 | ||
2776 | 2773 | ||
2777 | /* FIXME: We need to translate 0x05 READ_BLOCK_LIMITS to a MODE_SENSE | 2774 | /* FIXME: We need to translate 0x05 READ_BLOCK_LIMITS to a MODE_SENSE |
2778 | as ATAPI tape drives don't get this right otherwise */ | 2775 | as ATAPI tape drives don't get this right otherwise */ |
2779 | return 0; | 2776 | return 0; |
2780 | } | 2777 | } |
2781 | 2778 | ||
2782 | static struct ata_device *ata_find_dev(struct ata_port *ap, int devno) | 2779 | static struct ata_device *ata_find_dev(struct ata_port *ap, int devno) |
2783 | { | 2780 | { |
2784 | if (!sata_pmp_attached(ap)) { | 2781 | if (!sata_pmp_attached(ap)) { |
2785 | if (likely(devno < ata_link_max_devices(&ap->link))) | 2782 | if (likely(devno < ata_link_max_devices(&ap->link))) |
2786 | return &ap->link.device[devno]; | 2783 | return &ap->link.device[devno]; |
2787 | } else { | 2784 | } else { |
2788 | if (likely(devno < ap->nr_pmp_links)) | 2785 | if (likely(devno < ap->nr_pmp_links)) |
2789 | return &ap->pmp_link[devno].device[0]; | 2786 | return &ap->pmp_link[devno].device[0]; |
2790 | } | 2787 | } |
2791 | 2788 | ||
2792 | return NULL; | 2789 | return NULL; |
2793 | } | 2790 | } |
2794 | 2791 | ||
2795 | static struct ata_device *__ata_scsi_find_dev(struct ata_port *ap, | 2792 | static struct ata_device *__ata_scsi_find_dev(struct ata_port *ap, |
2796 | const struct scsi_device *scsidev) | 2793 | const struct scsi_device *scsidev) |
2797 | { | 2794 | { |
2798 | int devno; | 2795 | int devno; |
2799 | 2796 | ||
2800 | /* skip commands not addressed to targets we simulate */ | 2797 | /* skip commands not addressed to targets we simulate */ |
2801 | if (!sata_pmp_attached(ap)) { | 2798 | if (!sata_pmp_attached(ap)) { |
2802 | if (unlikely(scsidev->channel || scsidev->lun)) | 2799 | if (unlikely(scsidev->channel || scsidev->lun)) |
2803 | return NULL; | 2800 | return NULL; |
2804 | devno = scsidev->id; | 2801 | devno = scsidev->id; |
2805 | } else { | 2802 | } else { |
2806 | if (unlikely(scsidev->id || scsidev->lun)) | 2803 | if (unlikely(scsidev->id || scsidev->lun)) |
2807 | return NULL; | 2804 | return NULL; |
2808 | devno = scsidev->channel; | 2805 | devno = scsidev->channel; |
2809 | } | 2806 | } |
2810 | 2807 | ||
2811 | return ata_find_dev(ap, devno); | 2808 | return ata_find_dev(ap, devno); |
2812 | } | 2809 | } |
2813 | 2810 | ||
2814 | /** | 2811 | /** |
2815 | * ata_scsi_find_dev - lookup ata_device from scsi_cmnd | 2812 | * ata_scsi_find_dev - lookup ata_device from scsi_cmnd |
2816 | * @ap: ATA port to which the device is attached | 2813 | * @ap: ATA port to which the device is attached |
2817 | * @scsidev: SCSI device from which we derive the ATA device | 2814 | * @scsidev: SCSI device from which we derive the ATA device |
2818 | * | 2815 | * |
2819 | * Given various information provided in struct scsi_cmnd, | 2816 | * Given various information provided in struct scsi_cmnd, |
2820 | * map that onto an ATA bus, and using that mapping | 2817 | * map that onto an ATA bus, and using that mapping |
2821 | * determine which ata_device is associated with the | 2818 | * determine which ata_device is associated with the |
2822 | * SCSI command to be sent. | 2819 | * SCSI command to be sent. |
2823 | * | 2820 | * |
2824 | * LOCKING: | 2821 | * LOCKING: |
2825 | * spin_lock_irqsave(host lock) | 2822 | * spin_lock_irqsave(host lock) |
2826 | * | 2823 | * |
2827 | * RETURNS: | 2824 | * RETURNS: |
2828 | * Associated ATA device, or %NULL if not found. | 2825 | * Associated ATA device, or %NULL if not found. |
2829 | */ | 2826 | */ |
2830 | static struct ata_device * | 2827 | static struct ata_device * |
2831 | ata_scsi_find_dev(struct ata_port *ap, const struct scsi_device *scsidev) | 2828 | ata_scsi_find_dev(struct ata_port *ap, const struct scsi_device *scsidev) |
2832 | { | 2829 | { |
2833 | struct ata_device *dev = __ata_scsi_find_dev(ap, scsidev); | 2830 | struct ata_device *dev = __ata_scsi_find_dev(ap, scsidev); |
2834 | 2831 | ||
2835 | if (unlikely(!dev || !ata_dev_enabled(dev))) | 2832 | if (unlikely(!dev || !ata_dev_enabled(dev))) |
2836 | return NULL; | 2833 | return NULL; |
2837 | 2834 | ||
2838 | return dev; | 2835 | return dev; |
2839 | } | 2836 | } |
2840 | 2837 | ||
2841 | /* | 2838 | /* |
2842 | * ata_scsi_map_proto - Map pass-thru protocol value to taskfile value. | 2839 | * ata_scsi_map_proto - Map pass-thru protocol value to taskfile value. |
2843 | * @byte1: Byte 1 from pass-thru CDB. | 2840 | * @byte1: Byte 1 from pass-thru CDB. |
2844 | * | 2841 | * |
2845 | * RETURNS: | 2842 | * RETURNS: |
2846 | * ATA_PROT_UNKNOWN if mapping failed/unimplemented, protocol otherwise. | 2843 | * ATA_PROT_UNKNOWN if mapping failed/unimplemented, protocol otherwise. |
2847 | */ | 2844 | */ |
2848 | static u8 | 2845 | static u8 |
2849 | ata_scsi_map_proto(u8 byte1) | 2846 | ata_scsi_map_proto(u8 byte1) |
2850 | { | 2847 | { |
2851 | switch((byte1 & 0x1e) >> 1) { | 2848 | switch((byte1 & 0x1e) >> 1) { |
2852 | case 3: /* Non-data */ | 2849 | case 3: /* Non-data */ |
2853 | return ATA_PROT_NODATA; | 2850 | return ATA_PROT_NODATA; |
2854 | 2851 | ||
2855 | case 6: /* DMA */ | 2852 | case 6: /* DMA */ |
2856 | case 10: /* UDMA Data-in */ | 2853 | case 10: /* UDMA Data-in */ |
2857 | case 11: /* UDMA Data-Out */ | 2854 | case 11: /* UDMA Data-Out */ |
2858 | return ATA_PROT_DMA; | 2855 | return ATA_PROT_DMA; |
2859 | 2856 | ||
2860 | case 4: /* PIO Data-in */ | 2857 | case 4: /* PIO Data-in */ |
2861 | case 5: /* PIO Data-out */ | 2858 | case 5: /* PIO Data-out */ |
2862 | return ATA_PROT_PIO; | 2859 | return ATA_PROT_PIO; |
2863 | 2860 | ||
2864 | case 0: /* Hard Reset */ | 2861 | case 0: /* Hard Reset */ |
2865 | case 1: /* SRST */ | 2862 | case 1: /* SRST */ |
2866 | case 8: /* Device Diagnostic */ | 2863 | case 8: /* Device Diagnostic */ |
2867 | case 9: /* Device Reset */ | 2864 | case 9: /* Device Reset */ |
2868 | case 7: /* DMA Queued */ | 2865 | case 7: /* DMA Queued */ |
2869 | case 12: /* FPDMA */ | 2866 | case 12: /* FPDMA */ |
2870 | case 15: /* Return Response Info */ | 2867 | case 15: /* Return Response Info */ |
2871 | default: /* Reserved */ | 2868 | default: /* Reserved */ |
2872 | break; | 2869 | break; |
2873 | } | 2870 | } |
2874 | 2871 | ||
2875 | return ATA_PROT_UNKNOWN; | 2872 | return ATA_PROT_UNKNOWN; |
2876 | } | 2873 | } |
2877 | 2874 | ||
2878 | /** | 2875 | /** |
2879 | * ata_scsi_pass_thru - convert ATA pass-thru CDB to taskfile | 2876 | * ata_scsi_pass_thru - convert ATA pass-thru CDB to taskfile |
2880 | * @qc: command structure to be initialized | 2877 | * @qc: command structure to be initialized |
2881 | * | 2878 | * |
2882 | * Handles either 12 or 16-byte versions of the CDB. | 2879 | * Handles either 12 or 16-byte versions of the CDB. |
2883 | * | 2880 | * |
2884 | * RETURNS: | 2881 | * RETURNS: |
2885 | * Zero on success, non-zero on failure. | 2882 | * Zero on success, non-zero on failure. |
2886 | */ | 2883 | */ |
2887 | static unsigned int ata_scsi_pass_thru(struct ata_queued_cmd *qc) | 2884 | static unsigned int ata_scsi_pass_thru(struct ata_queued_cmd *qc) |
2888 | { | 2885 | { |
2889 | struct ata_taskfile *tf = &(qc->tf); | 2886 | struct ata_taskfile *tf = &(qc->tf); |
2890 | struct scsi_cmnd *scmd = qc->scsicmd; | 2887 | struct scsi_cmnd *scmd = qc->scsicmd; |
2891 | struct ata_device *dev = qc->dev; | 2888 | struct ata_device *dev = qc->dev; |
2892 | const u8 *cdb = scmd->cmnd; | 2889 | const u8 *cdb = scmd->cmnd; |
2893 | 2890 | ||
2894 | if ((tf->protocol = ata_scsi_map_proto(cdb[1])) == ATA_PROT_UNKNOWN) | 2891 | if ((tf->protocol = ata_scsi_map_proto(cdb[1])) == ATA_PROT_UNKNOWN) |
2895 | goto invalid_fld; | 2892 | goto invalid_fld; |
2896 | 2893 | ||
2897 | /* | 2894 | /* |
2898 | * 12 and 16 byte CDBs use different offsets to | 2895 | * 12 and 16 byte CDBs use different offsets to |
2899 | * provide the various register values. | 2896 | * provide the various register values. |
2900 | */ | 2897 | */ |
2901 | if (cdb[0] == ATA_16) { | 2898 | if (cdb[0] == ATA_16) { |
2902 | /* | 2899 | /* |
2903 | * 16-byte CDB - may contain extended commands. | 2900 | * 16-byte CDB - may contain extended commands. |
2904 | * | 2901 | * |
2905 | * If that is the case, copy the upper byte register values. | 2902 | * If that is the case, copy the upper byte register values. |
2906 | */ | 2903 | */ |
2907 | if (cdb[1] & 0x01) { | 2904 | if (cdb[1] & 0x01) { |
2908 | tf->hob_feature = cdb[3]; | 2905 | tf->hob_feature = cdb[3]; |
2909 | tf->hob_nsect = cdb[5]; | 2906 | tf->hob_nsect = cdb[5]; |
2910 | tf->hob_lbal = cdb[7]; | 2907 | tf->hob_lbal = cdb[7]; |
2911 | tf->hob_lbam = cdb[9]; | 2908 | tf->hob_lbam = cdb[9]; |
2912 | tf->hob_lbah = cdb[11]; | 2909 | tf->hob_lbah = cdb[11]; |
2913 | tf->flags |= ATA_TFLAG_LBA48; | 2910 | tf->flags |= ATA_TFLAG_LBA48; |
2914 | } else | 2911 | } else |
2915 | tf->flags &= ~ATA_TFLAG_LBA48; | 2912 | tf->flags &= ~ATA_TFLAG_LBA48; |
2916 | 2913 | ||
2917 | /* | 2914 | /* |
2918 | * Always copy low byte, device and command registers. | 2915 | * Always copy low byte, device and command registers. |
2919 | */ | 2916 | */ |
2920 | tf->feature = cdb[4]; | 2917 | tf->feature = cdb[4]; |
2921 | tf->nsect = cdb[6]; | 2918 | tf->nsect = cdb[6]; |
2922 | tf->lbal = cdb[8]; | 2919 | tf->lbal = cdb[8]; |
2923 | tf->lbam = cdb[10]; | 2920 | tf->lbam = cdb[10]; |
2924 | tf->lbah = cdb[12]; | 2921 | tf->lbah = cdb[12]; |
2925 | tf->device = cdb[13]; | 2922 | tf->device = cdb[13]; |
2926 | tf->command = cdb[14]; | 2923 | tf->command = cdb[14]; |
2927 | } else { | 2924 | } else { |
2928 | /* | 2925 | /* |
2929 | * 12-byte CDB - incapable of extended commands. | 2926 | * 12-byte CDB - incapable of extended commands. |
2930 | */ | 2927 | */ |
2931 | tf->flags &= ~ATA_TFLAG_LBA48; | 2928 | tf->flags &= ~ATA_TFLAG_LBA48; |
2932 | 2929 | ||
2933 | tf->feature = cdb[3]; | 2930 | tf->feature = cdb[3]; |
2934 | tf->nsect = cdb[4]; | 2931 | tf->nsect = cdb[4]; |
2935 | tf->lbal = cdb[5]; | 2932 | tf->lbal = cdb[5]; |
2936 | tf->lbam = cdb[6]; | 2933 | tf->lbam = cdb[6]; |
2937 | tf->lbah = cdb[7]; | 2934 | tf->lbah = cdb[7]; |
2938 | tf->device = cdb[8]; | 2935 | tf->device = cdb[8]; |
2939 | tf->command = cdb[9]; | 2936 | tf->command = cdb[9]; |
2940 | } | 2937 | } |
2941 | 2938 | ||
2942 | /* enforce correct master/slave bit */ | 2939 | /* enforce correct master/slave bit */ |
2943 | tf->device = dev->devno ? | 2940 | tf->device = dev->devno ? |
2944 | tf->device | ATA_DEV1 : tf->device & ~ATA_DEV1; | 2941 | tf->device | ATA_DEV1 : tf->device & ~ATA_DEV1; |
2945 | 2942 | ||
2946 | switch (tf->command) { | 2943 | switch (tf->command) { |
2947 | /* READ/WRITE LONG use a non-standard sect_size */ | 2944 | /* READ/WRITE LONG use a non-standard sect_size */ |
2948 | case ATA_CMD_READ_LONG: | 2945 | case ATA_CMD_READ_LONG: |
2949 | case ATA_CMD_READ_LONG_ONCE: | 2946 | case ATA_CMD_READ_LONG_ONCE: |
2950 | case ATA_CMD_WRITE_LONG: | 2947 | case ATA_CMD_WRITE_LONG: |
2951 | case ATA_CMD_WRITE_LONG_ONCE: | 2948 | case ATA_CMD_WRITE_LONG_ONCE: |
2952 | if (tf->protocol != ATA_PROT_PIO || tf->nsect != 1) | 2949 | if (tf->protocol != ATA_PROT_PIO || tf->nsect != 1) |
2953 | goto invalid_fld; | 2950 | goto invalid_fld; |
2954 | qc->sect_size = scsi_bufflen(scmd); | 2951 | qc->sect_size = scsi_bufflen(scmd); |
2955 | break; | 2952 | break; |
2956 | 2953 | ||
2957 | /* commands using reported Logical Block size (e.g. 512 or 4K) */ | 2954 | /* commands using reported Logical Block size (e.g. 512 or 4K) */ |
2958 | case ATA_CMD_CFA_WRITE_NE: | 2955 | case ATA_CMD_CFA_WRITE_NE: |
2959 | case ATA_CMD_CFA_TRANS_SECT: | 2956 | case ATA_CMD_CFA_TRANS_SECT: |
2960 | case ATA_CMD_CFA_WRITE_MULT_NE: | 2957 | case ATA_CMD_CFA_WRITE_MULT_NE: |
2961 | /* XXX: case ATA_CMD_CFA_WRITE_SECTORS_WITHOUT_ERASE: */ | 2958 | /* XXX: case ATA_CMD_CFA_WRITE_SECTORS_WITHOUT_ERASE: */ |
2962 | case ATA_CMD_READ: | 2959 | case ATA_CMD_READ: |
2963 | case ATA_CMD_READ_EXT: | 2960 | case ATA_CMD_READ_EXT: |
2964 | case ATA_CMD_READ_QUEUED: | 2961 | case ATA_CMD_READ_QUEUED: |
2965 | /* XXX: case ATA_CMD_READ_QUEUED_EXT: */ | 2962 | /* XXX: case ATA_CMD_READ_QUEUED_EXT: */ |
2966 | case ATA_CMD_FPDMA_READ: | 2963 | case ATA_CMD_FPDMA_READ: |
2967 | case ATA_CMD_READ_MULTI: | 2964 | case ATA_CMD_READ_MULTI: |
2968 | case ATA_CMD_READ_MULTI_EXT: | 2965 | case ATA_CMD_READ_MULTI_EXT: |
2969 | case ATA_CMD_PIO_READ: | 2966 | case ATA_CMD_PIO_READ: |
2970 | case ATA_CMD_PIO_READ_EXT: | 2967 | case ATA_CMD_PIO_READ_EXT: |
2971 | case ATA_CMD_READ_STREAM_DMA_EXT: | 2968 | case ATA_CMD_READ_STREAM_DMA_EXT: |
2972 | case ATA_CMD_READ_STREAM_EXT: | 2969 | case ATA_CMD_READ_STREAM_EXT: |
2973 | case ATA_CMD_VERIFY: | 2970 | case ATA_CMD_VERIFY: |
2974 | case ATA_CMD_VERIFY_EXT: | 2971 | case ATA_CMD_VERIFY_EXT: |
2975 | case ATA_CMD_WRITE: | 2972 | case ATA_CMD_WRITE: |
2976 | case ATA_CMD_WRITE_EXT: | 2973 | case ATA_CMD_WRITE_EXT: |
2977 | case ATA_CMD_WRITE_FUA_EXT: | 2974 | case ATA_CMD_WRITE_FUA_EXT: |
2978 | case ATA_CMD_WRITE_QUEUED: | 2975 | case ATA_CMD_WRITE_QUEUED: |
2979 | case ATA_CMD_WRITE_QUEUED_FUA_EXT: | 2976 | case ATA_CMD_WRITE_QUEUED_FUA_EXT: |
2980 | case ATA_CMD_FPDMA_WRITE: | 2977 | case ATA_CMD_FPDMA_WRITE: |
2981 | case ATA_CMD_WRITE_MULTI: | 2978 | case ATA_CMD_WRITE_MULTI: |
2982 | case ATA_CMD_WRITE_MULTI_EXT: | 2979 | case ATA_CMD_WRITE_MULTI_EXT: |
2983 | case ATA_CMD_WRITE_MULTI_FUA_EXT: | 2980 | case ATA_CMD_WRITE_MULTI_FUA_EXT: |
2984 | case ATA_CMD_PIO_WRITE: | 2981 | case ATA_CMD_PIO_WRITE: |
2985 | case ATA_CMD_PIO_WRITE_EXT: | 2982 | case ATA_CMD_PIO_WRITE_EXT: |
2986 | case ATA_CMD_WRITE_STREAM_DMA_EXT: | 2983 | case ATA_CMD_WRITE_STREAM_DMA_EXT: |
2987 | case ATA_CMD_WRITE_STREAM_EXT: | 2984 | case ATA_CMD_WRITE_STREAM_EXT: |
2988 | qc->sect_size = scmd->device->sector_size; | 2985 | qc->sect_size = scmd->device->sector_size; |
2989 | break; | 2986 | break; |
2990 | 2987 | ||
2991 | /* Everything else uses 512 byte "sectors" */ | 2988 | /* Everything else uses 512 byte "sectors" */ |
2992 | default: | 2989 | default: |
2993 | qc->sect_size = ATA_SECT_SIZE; | 2990 | qc->sect_size = ATA_SECT_SIZE; |
2994 | } | 2991 | } |
2995 | 2992 | ||
2996 | /* | 2993 | /* |
2997 | * Set flags so that all registers will be written, pass on | 2994 | * Set flags so that all registers will be written, pass on |
2998 | * write indication (used for PIO/DMA setup), result TF is | 2995 | * write indication (used for PIO/DMA setup), result TF is |
2999 | * copied back and we don't whine too much about its failure. | 2996 | * copied back and we don't whine too much about its failure. |
3000 | */ | 2997 | */ |
3001 | tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; | 2998 | tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; |
3002 | if (scmd->sc_data_direction == DMA_TO_DEVICE) | 2999 | if (scmd->sc_data_direction == DMA_TO_DEVICE) |
3003 | tf->flags |= ATA_TFLAG_WRITE; | 3000 | tf->flags |= ATA_TFLAG_WRITE; |
3004 | 3001 | ||
3005 | qc->flags |= ATA_QCFLAG_RESULT_TF | ATA_QCFLAG_QUIET; | 3002 | qc->flags |= ATA_QCFLAG_RESULT_TF | ATA_QCFLAG_QUIET; |
3006 | 3003 | ||
3007 | /* | 3004 | /* |
3008 | * Set transfer length. | 3005 | * Set transfer length. |
3009 | * | 3006 | * |
3010 | * TODO: find out if we need to do more here to | 3007 | * TODO: find out if we need to do more here to |
3011 | * cover scatter/gather case. | 3008 | * cover scatter/gather case. |
3012 | */ | 3009 | */ |
3013 | ata_qc_set_pc_nbytes(qc); | 3010 | ata_qc_set_pc_nbytes(qc); |
3014 | 3011 | ||
3015 | /* We may not issue DMA commands if no DMA mode is set */ | 3012 | /* We may not issue DMA commands if no DMA mode is set */ |
3016 | if (tf->protocol == ATA_PROT_DMA && dev->dma_mode == 0) | 3013 | if (tf->protocol == ATA_PROT_DMA && dev->dma_mode == 0) |
3017 | goto invalid_fld; | 3014 | goto invalid_fld; |
3018 | 3015 | ||
3019 | /* sanity check for pio multi commands */ | 3016 | /* sanity check for pio multi commands */ |
3020 | if ((cdb[1] & 0xe0) && !is_multi_taskfile(tf)) | 3017 | if ((cdb[1] & 0xe0) && !is_multi_taskfile(tf)) |
3021 | goto invalid_fld; | 3018 | goto invalid_fld; |
3022 | 3019 | ||
3023 | if (is_multi_taskfile(tf)) { | 3020 | if (is_multi_taskfile(tf)) { |
3024 | unsigned int multi_count = 1 << (cdb[1] >> 5); | 3021 | unsigned int multi_count = 1 << (cdb[1] >> 5); |
3025 | 3022 | ||
3026 | /* compare the passed through multi_count | 3023 | /* compare the passed through multi_count |
3027 | * with the cached multi_count of libata | 3024 | * with the cached multi_count of libata |
3028 | */ | 3025 | */ |
3029 | if (multi_count != dev->multi_count) | 3026 | if (multi_count != dev->multi_count) |
3030 | ata_dev_warn(dev, "invalid multi_count %u ignored\n", | 3027 | ata_dev_warn(dev, "invalid multi_count %u ignored\n", |
3031 | multi_count); | 3028 | multi_count); |
3032 | } | 3029 | } |
3033 | 3030 | ||
3034 | /* | 3031 | /* |
3035 | * Filter SET_FEATURES - XFER MODE command -- otherwise, | 3032 | * Filter SET_FEATURES - XFER MODE command -- otherwise, |
3036 | * SET_FEATURES - XFER MODE must be preceded/succeeded | 3033 | * SET_FEATURES - XFER MODE must be preceded/succeeded |
3037 | * by an update to hardware-specific registers for each | 3034 | * by an update to hardware-specific registers for each |
3038 | * controller (i.e. the reason for ->set_piomode(), | 3035 | * controller (i.e. the reason for ->set_piomode(), |
3039 | * ->set_dmamode(), and ->post_set_mode() hooks). | 3036 | * ->set_dmamode(), and ->post_set_mode() hooks). |
3040 | */ | 3037 | */ |
3041 | if (tf->command == ATA_CMD_SET_FEATURES && | 3038 | if (tf->command == ATA_CMD_SET_FEATURES && |
3042 | tf->feature == SETFEATURES_XFER) | 3039 | tf->feature == SETFEATURES_XFER) |
3043 | goto invalid_fld; | 3040 | goto invalid_fld; |
3044 | 3041 | ||
3045 | /* | 3042 | /* |
3046 | * Filter TPM commands by default. These provide an | 3043 | * Filter TPM commands by default. These provide an |
3047 | * essentially uncontrolled encrypted "back door" between | 3044 | * essentially uncontrolled encrypted "back door" between |
3048 | * applications and the disk. Set libata.allow_tpm=1 if you | 3045 | * applications and the disk. Set libata.allow_tpm=1 if you |
3049 | * have a real reason for wanting to use them. This ensures | 3046 | * have a real reason for wanting to use them. This ensures |
3050 | * that installed software cannot easily mess stuff up without | 3047 | * that installed software cannot easily mess stuff up without |
3051 | * user intent. DVR type users will probably ship with this enabled | 3048 | * user intent. DVR type users will probably ship with this enabled |
3052 | * for movie content management. | 3049 | * for movie content management. |
3053 | * | 3050 | * |
3054 | * Note that for ATA8 we can issue a DCS change and DCS freeze lock | 3051 | * Note that for ATA8 we can issue a DCS change and DCS freeze lock |
3055 | * for this and should do in future but that it is not sufficient as | 3052 | * for this and should do in future but that it is not sufficient as |
3056 | * DCS is an optional feature set. Thus we also do the software filter | 3053 | * DCS is an optional feature set. Thus we also do the software filter |
3057 | * so that we comply with the TC consortium stated goal that the user | 3054 | * so that we comply with the TC consortium stated goal that the user |
3058 | * can turn off TC features of their system. | 3055 | * can turn off TC features of their system. |
3059 | */ | 3056 | */ |
3060 | if (tf->command >= 0x5C && tf->command <= 0x5F && !libata_allow_tpm) | 3057 | if (tf->command >= 0x5C && tf->command <= 0x5F && !libata_allow_tpm) |
3061 | goto invalid_fld; | 3058 | goto invalid_fld; |
3062 | 3059 | ||
3063 | return 0; | 3060 | return 0; |
3064 | 3061 | ||
3065 | invalid_fld: | 3062 | invalid_fld: |
3066 | ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x24, 0x00); | 3063 | ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x24, 0x00); |
3067 | /* "Invalid field in cdb" */ | 3064 | /* "Invalid field in cdb" */ |
3068 | return 1; | 3065 | return 1; |
3069 | } | 3066 | } |
3070 | 3067 | ||
3071 | static unsigned int ata_scsi_write_same_xlat(struct ata_queued_cmd *qc) | 3068 | static unsigned int ata_scsi_write_same_xlat(struct ata_queued_cmd *qc) |
3072 | { | 3069 | { |
3073 | struct ata_taskfile *tf = &qc->tf; | 3070 | struct ata_taskfile *tf = &qc->tf; |
3074 | struct scsi_cmnd *scmd = qc->scsicmd; | 3071 | struct scsi_cmnd *scmd = qc->scsicmd; |
3075 | struct ata_device *dev = qc->dev; | 3072 | struct ata_device *dev = qc->dev; |
3076 | const u8 *cdb = scmd->cmnd; | 3073 | const u8 *cdb = scmd->cmnd; |
3077 | u64 block; | 3074 | u64 block; |
3078 | u32 n_block; | 3075 | u32 n_block; |
3079 | u32 size; | 3076 | u32 size; |
3080 | void *buf; | 3077 | void *buf; |
3081 | 3078 | ||
3082 | /* we may not issue DMA commands if no DMA mode is set */ | 3079 | /* we may not issue DMA commands if no DMA mode is set */ |
3083 | if (unlikely(!dev->dma_mode)) | 3080 | if (unlikely(!dev->dma_mode)) |
3084 | goto invalid_fld; | 3081 | goto invalid_fld; |
3085 | 3082 | ||
3086 | if (unlikely(scmd->cmd_len < 16)) | 3083 | if (unlikely(scmd->cmd_len < 16)) |
3087 | goto invalid_fld; | 3084 | goto invalid_fld; |
3088 | scsi_16_lba_len(cdb, &block, &n_block); | 3085 | scsi_16_lba_len(cdb, &block, &n_block); |
3089 | 3086 | ||
3090 | /* for now we only support WRITE SAME with the unmap bit set */ | 3087 | /* for now we only support WRITE SAME with the unmap bit set */ |
3091 | if (unlikely(!(cdb[1] & 0x8))) | 3088 | if (unlikely(!(cdb[1] & 0x8))) |
3092 | goto invalid_fld; | 3089 | goto invalid_fld; |
3093 | 3090 | ||
3094 | /* | 3091 | /* |
3095 | * WRITE SAME always has a sector sized buffer as payload, this | 3092 | * WRITE SAME always has a sector sized buffer as payload, this |
3096 | * should never be a multiple entry S/G list. | 3093 | * should never be a multiple entry S/G list. |
3097 | */ | 3094 | */ |
3098 | if (!scsi_sg_count(scmd)) | 3095 | if (!scsi_sg_count(scmd)) |
3099 | goto invalid_fld; | 3096 | goto invalid_fld; |
3100 | 3097 | ||
3101 | buf = page_address(sg_page(scsi_sglist(scmd))); | 3098 | buf = page_address(sg_page(scsi_sglist(scmd))); |
3102 | size = ata_set_lba_range_entries(buf, 512, block, n_block); | 3099 | size = ata_set_lba_range_entries(buf, 512, block, n_block); |
3103 | 3100 | ||
3104 | tf->protocol = ATA_PROT_DMA; | 3101 | tf->protocol = ATA_PROT_DMA; |
3105 | tf->hob_feature = 0; | 3102 | tf->hob_feature = 0; |
3106 | tf->feature = ATA_DSM_TRIM; | 3103 | tf->feature = ATA_DSM_TRIM; |
3107 | tf->hob_nsect = (size / 512) >> 8; | 3104 | tf->hob_nsect = (size / 512) >> 8; |
3108 | tf->nsect = size / 512; | 3105 | tf->nsect = size / 512; |
3109 | tf->command = ATA_CMD_DSM; | 3106 | tf->command = ATA_CMD_DSM; |
3110 | tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE | ATA_TFLAG_LBA48 | | 3107 | tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE | ATA_TFLAG_LBA48 | |
3111 | ATA_TFLAG_WRITE; | 3108 | ATA_TFLAG_WRITE; |
3112 | 3109 | ||
3113 | ata_qc_set_pc_nbytes(qc); | 3110 | ata_qc_set_pc_nbytes(qc); |
3114 | 3111 | ||
3115 | return 0; | 3112 | return 0; |
3116 | 3113 | ||
3117 | invalid_fld: | 3114 | invalid_fld: |
3118 | ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x24, 0x00); | 3115 | ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x24, 0x00); |
3119 | /* "Invalid field in cdb" */ | 3116 | /* "Invalid field in cdb" */ |
3120 | return 1; | 3117 | return 1; |
3121 | } | 3118 | } |
3122 | 3119 | ||
3123 | /** | 3120 | /** |
3124 | * ata_mselect_caching - Simulate MODE SELECT for caching info page | 3121 | * ata_mselect_caching - Simulate MODE SELECT for caching info page |
3125 | * @qc: Storage for translated ATA taskfile | 3122 | * @qc: Storage for translated ATA taskfile |
3126 | * @buf: input buffer | 3123 | * @buf: input buffer |
3127 | * @len: number of valid bytes in the input buffer | 3124 | * @len: number of valid bytes in the input buffer |
3128 | * | 3125 | * |
3129 | * Prepare a taskfile to modify caching information for the device. | 3126 | * Prepare a taskfile to modify caching information for the device. |
3130 | * | 3127 | * |
3131 | * LOCKING: | 3128 | * LOCKING: |
3132 | * None. | 3129 | * None. |
3133 | */ | 3130 | */ |
3134 | static int ata_mselect_caching(struct ata_queued_cmd *qc, | 3131 | static int ata_mselect_caching(struct ata_queued_cmd *qc, |
3135 | const u8 *buf, int len) | 3132 | const u8 *buf, int len) |
3136 | { | 3133 | { |
3137 | struct ata_taskfile *tf = &qc->tf; | 3134 | struct ata_taskfile *tf = &qc->tf; |
3138 | struct ata_device *dev = qc->dev; | 3135 | struct ata_device *dev = qc->dev; |
3139 | char mpage[CACHE_MPAGE_LEN]; | 3136 | char mpage[CACHE_MPAGE_LEN]; |
3140 | u8 wce; | 3137 | u8 wce; |
3141 | 3138 | ||
3142 | /* | 3139 | /* |
3143 | * The first two bytes of def_cache_mpage are a header, so offsets | 3140 | * The first two bytes of def_cache_mpage are a header, so offsets |
3144 | * in mpage are off by 2 compared to buf. Same for len. | 3141 | * in mpage are off by 2 compared to buf. Same for len. |
3145 | */ | 3142 | */ |
3146 | 3143 | ||
3147 | if (len != CACHE_MPAGE_LEN - 2) | 3144 | if (len != CACHE_MPAGE_LEN - 2) |
3148 | return -EINVAL; | 3145 | return -EINVAL; |
3149 | 3146 | ||
3150 | wce = buf[0] & (1 << 2); | 3147 | wce = buf[0] & (1 << 2); |
3151 | 3148 | ||
3152 | /* | 3149 | /* |
3153 | * Check that read-only bits are not modified. | 3150 | * Check that read-only bits are not modified. |
3154 | */ | 3151 | */ |
3155 | ata_msense_caching(dev->id, mpage, false); | 3152 | ata_msense_caching(dev->id, mpage, false); |
3156 | mpage[2] &= ~(1 << 2); | 3153 | mpage[2] &= ~(1 << 2); |
3157 | mpage[2] |= wce; | 3154 | mpage[2] |= wce; |
3158 | if (memcmp(mpage + 2, buf, CACHE_MPAGE_LEN - 2) != 0) | 3155 | if (memcmp(mpage + 2, buf, CACHE_MPAGE_LEN - 2) != 0) |
3159 | return -EINVAL; | 3156 | return -EINVAL; |
3160 | 3157 | ||
3161 | tf->flags |= ATA_TFLAG_DEVICE | ATA_TFLAG_ISADDR; | 3158 | tf->flags |= ATA_TFLAG_DEVICE | ATA_TFLAG_ISADDR; |
3162 | tf->protocol = ATA_PROT_NODATA; | 3159 | tf->protocol = ATA_PROT_NODATA; |
3163 | tf->nsect = 0; | 3160 | tf->nsect = 0; |
3164 | tf->command = ATA_CMD_SET_FEATURES; | 3161 | tf->command = ATA_CMD_SET_FEATURES; |
3165 | tf->feature = wce ? SETFEATURES_WC_ON : SETFEATURES_WC_OFF; | 3162 | tf->feature = wce ? SETFEATURES_WC_ON : SETFEATURES_WC_OFF; |
3166 | return 0; | 3163 | return 0; |
3167 | } | 3164 | } |
3168 | 3165 | ||
3169 | /** | 3166 | /** |
3170 | * ata_scsiop_mode_select - Simulate MODE SELECT 6, 10 commands | 3167 | * ata_scsiop_mode_select - Simulate MODE SELECT 6, 10 commands |
3171 | * @qc: Storage for translated ATA taskfile | 3168 | * @qc: Storage for translated ATA taskfile |
3172 | * | 3169 | * |
3173 | * Converts a MODE SELECT command to an ATA SET FEATURES taskfile. | 3170 | * Converts a MODE SELECT command to an ATA SET FEATURES taskfile. |
3174 | * Assume this is invoked for direct access devices (e.g. disks) only. | 3171 | * Assume this is invoked for direct access devices (e.g. disks) only. |
3175 | * There should be no block descriptor for other device types. | 3172 | * There should be no block descriptor for other device types. |
3176 | * | 3173 | * |
3177 | * LOCKING: | 3174 | * LOCKING: |
3178 | * spin_lock_irqsave(host lock) | 3175 | * spin_lock_irqsave(host lock) |
3179 | */ | 3176 | */ |
3180 | static unsigned int ata_scsi_mode_select_xlat(struct ata_queued_cmd *qc) | 3177 | static unsigned int ata_scsi_mode_select_xlat(struct ata_queued_cmd *qc) |
3181 | { | 3178 | { |
3182 | struct scsi_cmnd *scmd = qc->scsicmd; | 3179 | struct scsi_cmnd *scmd = qc->scsicmd; |
3183 | const u8 *cdb = scmd->cmnd; | 3180 | const u8 *cdb = scmd->cmnd; |
3184 | const u8 *p; | 3181 | const u8 *p; |
3185 | u8 pg, spg; | 3182 | u8 pg, spg; |
3186 | unsigned six_byte, pg_len, hdr_len, bd_len; | 3183 | unsigned six_byte, pg_len, hdr_len, bd_len; |
3187 | int len; | 3184 | int len; |
3188 | 3185 | ||
3189 | VPRINTK("ENTER\n"); | 3186 | VPRINTK("ENTER\n"); |
3190 | 3187 | ||
3191 | six_byte = (cdb[0] == MODE_SELECT); | 3188 | six_byte = (cdb[0] == MODE_SELECT); |
3192 | if (six_byte) { | 3189 | if (six_byte) { |
3193 | if (scmd->cmd_len < 5) | 3190 | if (scmd->cmd_len < 5) |
3194 | goto invalid_fld; | 3191 | goto invalid_fld; |
3195 | 3192 | ||
3196 | len = cdb[4]; | 3193 | len = cdb[4]; |
3197 | hdr_len = 4; | 3194 | hdr_len = 4; |
3198 | } else { | 3195 | } else { |
3199 | if (scmd->cmd_len < 9) | 3196 | if (scmd->cmd_len < 9) |
3200 | goto invalid_fld; | 3197 | goto invalid_fld; |
3201 | 3198 | ||
3202 | len = (cdb[7] << 8) + cdb[8]; | 3199 | len = (cdb[7] << 8) + cdb[8]; |
3203 | hdr_len = 8; | 3200 | hdr_len = 8; |
3204 | } | 3201 | } |
3205 | 3202 | ||
3206 | /* We only support PF=1, SP=0. */ | 3203 | /* We only support PF=1, SP=0. */ |
3207 | if ((cdb[1] & 0x11) != 0x10) | 3204 | if ((cdb[1] & 0x11) != 0x10) |
3208 | goto invalid_fld; | 3205 | goto invalid_fld; |
3209 | 3206 | ||
3210 | /* Test early for possible overrun. */ | 3207 | /* Test early for possible overrun. */ |
3211 | if (!scsi_sg_count(scmd) || scsi_sglist(scmd)->length < len) | 3208 | if (!scsi_sg_count(scmd) || scsi_sglist(scmd)->length < len) |
3212 | goto invalid_param_len; | 3209 | goto invalid_param_len; |
3213 | 3210 | ||
3214 | p = page_address(sg_page(scsi_sglist(scmd))); | 3211 | p = page_address(sg_page(scsi_sglist(scmd))); |
3215 | 3212 | ||
3216 | /* Move past header and block descriptors. */ | 3213 | /* Move past header and block descriptors. */ |
3217 | if (len < hdr_len) | 3214 | if (len < hdr_len) |
3218 | goto invalid_param_len; | 3215 | goto invalid_param_len; |
3219 | 3216 | ||
3220 | if (six_byte) | 3217 | if (six_byte) |
3221 | bd_len = p[3]; | 3218 | bd_len = p[3]; |
3222 | else | 3219 | else |
3223 | bd_len = (p[6] << 8) + p[7]; | 3220 | bd_len = (p[6] << 8) + p[7]; |
3224 | 3221 | ||
3225 | len -= hdr_len; | 3222 | len -= hdr_len; |
3226 | p += hdr_len; | 3223 | p += hdr_len; |
3227 | if (len < bd_len) | 3224 | if (len < bd_len) |
3228 | goto invalid_param_len; | 3225 | goto invalid_param_len; |
3229 | if (bd_len != 0 && bd_len != 8) | 3226 | if (bd_len != 0 && bd_len != 8) |
3230 | goto invalid_param; | 3227 | goto invalid_param; |
3231 | 3228 | ||
3232 | len -= bd_len; | 3229 | len -= bd_len; |
3233 | p += bd_len; | 3230 | p += bd_len; |
3234 | if (len == 0) | 3231 | if (len == 0) |
3235 | goto skip; | 3232 | goto skip; |
3236 | 3233 | ||
3237 | /* Parse both possible formats for the mode page headers. */ | 3234 | /* Parse both possible formats for the mode page headers. */ |
3238 | pg = p[0] & 0x3f; | 3235 | pg = p[0] & 0x3f; |
3239 | if (p[0] & 0x40) { | 3236 | if (p[0] & 0x40) { |
3240 | if (len < 4) | 3237 | if (len < 4) |
3241 | goto invalid_param_len; | 3238 | goto invalid_param_len; |
3242 | 3239 | ||
3243 | spg = p[1]; | 3240 | spg = p[1]; |
3244 | pg_len = (p[2] << 8) | p[3]; | 3241 | pg_len = (p[2] << 8) | p[3]; |
3245 | p += 4; | 3242 | p += 4; |
3246 | len -= 4; | 3243 | len -= 4; |
3247 | } else { | 3244 | } else { |
3248 | if (len < 2) | 3245 | if (len < 2) |
3249 | goto invalid_param_len; | 3246 | goto invalid_param_len; |
3250 | 3247 | ||
3251 | spg = 0; | 3248 | spg = 0; |
3252 | pg_len = p[1]; | 3249 | pg_len = p[1]; |
3253 | p += 2; | 3250 | p += 2; |
3254 | len -= 2; | 3251 | len -= 2; |
3255 | } | 3252 | } |
3256 | 3253 | ||
3257 | /* | 3254 | /* |
3258 | * No mode subpages supported (yet) but asking for _all_ | 3255 | * No mode subpages supported (yet) but asking for _all_ |
3259 | * subpages may be valid | 3256 | * subpages may be valid |
3260 | */ | 3257 | */ |
3261 | if (spg && (spg != ALL_SUB_MPAGES)) | 3258 | if (spg && (spg != ALL_SUB_MPAGES)) |
3262 | goto invalid_param; | 3259 | goto invalid_param; |
3263 | if (pg_len > len) | 3260 | if (pg_len > len) |
3264 | goto invalid_param_len; | 3261 | goto invalid_param_len; |
3265 | 3262 | ||
3266 | switch (pg) { | 3263 | switch (pg) { |
3267 | case CACHE_MPAGE: | 3264 | case CACHE_MPAGE: |
3268 | if (ata_mselect_caching(qc, p, pg_len) < 0) | 3265 | if (ata_mselect_caching(qc, p, pg_len) < 0) |
3269 | goto invalid_param; | 3266 | goto invalid_param; |
3270 | break; | 3267 | break; |
3271 | 3268 | ||
3272 | default: /* invalid page code */ | 3269 | default: /* invalid page code */ |
3273 | goto invalid_param; | 3270 | goto invalid_param; |
3274 | } | 3271 | } |
3275 | 3272 | ||
3276 | /* | 3273 | /* |
3277 | * Only one page has changeable data, so we only support setting one | 3274 | * Only one page has changeable data, so we only support setting one |
3278 | * page at a time. | 3275 | * page at a time. |
3279 | */ | 3276 | */ |
3280 | if (len > pg_len) | 3277 | if (len > pg_len) |
3281 | goto invalid_param; | 3278 | goto invalid_param; |
3282 | 3279 | ||
3283 | return 0; | 3280 | return 0; |
3284 | 3281 | ||
3285 | invalid_fld: | 3282 | invalid_fld: |
3286 | /* "Invalid field in CDB" */ | 3283 | /* "Invalid field in CDB" */ |
3287 | ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x24, 0x0); | 3284 | ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x24, 0x0); |
3288 | return 1; | 3285 | return 1; |
3289 | 3286 | ||
3290 | invalid_param: | 3287 | invalid_param: |
3291 | /* "Invalid field in parameter list" */ | 3288 | /* "Invalid field in parameter list" */ |
3292 | ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x26, 0x0); | 3289 | ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x26, 0x0); |
3293 | return 1; | 3290 | return 1; |
3294 | 3291 | ||
3295 | invalid_param_len: | 3292 | invalid_param_len: |
3296 | /* "Parameter list length error" */ | 3293 | /* "Parameter list length error" */ |
3297 | ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x1a, 0x0); | 3294 | ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x1a, 0x0); |
3298 | return 1; | 3295 | return 1; |
3299 | 3296 | ||
3300 | skip: | 3297 | skip: |
3301 | scmd->result = SAM_STAT_GOOD; | 3298 | scmd->result = SAM_STAT_GOOD; |
3302 | return 1; | 3299 | return 1; |
3303 | } | 3300 | } |
3304 | 3301 | ||
3305 | /** | 3302 | /** |
3306 | * ata_get_xlat_func - check if SCSI to ATA translation is possible | 3303 | * ata_get_xlat_func - check if SCSI to ATA translation is possible |
3307 | * @dev: ATA device | 3304 | * @dev: ATA device |
3308 | * @cmd: SCSI command opcode to consider | 3305 | * @cmd: SCSI command opcode to consider |
3309 | * | 3306 | * |
3310 | * Look up the SCSI command given, and determine whether the | 3307 | * Look up the SCSI command given, and determine whether the |
3311 | * SCSI command is to be translated or simulated. | 3308 | * SCSI command is to be translated or simulated. |
3312 | * | 3309 | * |
3313 | * RETURNS: | 3310 | * RETURNS: |
3314 | * Pointer to translation function if possible, %NULL if not. | 3311 | * Pointer to translation function if possible, %NULL if not. |
3315 | */ | 3312 | */ |
3316 | 3313 | ||
3317 | static inline ata_xlat_func_t ata_get_xlat_func(struct ata_device *dev, u8 cmd) | 3314 | static inline ata_xlat_func_t ata_get_xlat_func(struct ata_device *dev, u8 cmd) |
3318 | { | 3315 | { |
3319 | switch (cmd) { | 3316 | switch (cmd) { |
3320 | case READ_6: | 3317 | case READ_6: |
3321 | case READ_10: | 3318 | case READ_10: |
3322 | case READ_16: | 3319 | case READ_16: |
3323 | 3320 | ||
3324 | case WRITE_6: | 3321 | case WRITE_6: |
3325 | case WRITE_10: | 3322 | case WRITE_10: |
3326 | case WRITE_16: | 3323 | case WRITE_16: |
3327 | return ata_scsi_rw_xlat; | 3324 | return ata_scsi_rw_xlat; |
3328 | 3325 | ||
3329 | case WRITE_SAME_16: | 3326 | case WRITE_SAME_16: |
3330 | return ata_scsi_write_same_xlat; | 3327 | return ata_scsi_write_same_xlat; |
3331 | 3328 | ||
3332 | case SYNCHRONIZE_CACHE: | 3329 | case SYNCHRONIZE_CACHE: |
3333 | if (ata_try_flush_cache(dev)) | 3330 | if (ata_try_flush_cache(dev)) |
3334 | return ata_scsi_flush_xlat; | 3331 | return ata_scsi_flush_xlat; |
3335 | break; | 3332 | break; |
3336 | 3333 | ||
3337 | case VERIFY: | 3334 | case VERIFY: |
3338 | case VERIFY_16: | 3335 | case VERIFY_16: |
3339 | return ata_scsi_verify_xlat; | 3336 | return ata_scsi_verify_xlat; |
3340 | 3337 | ||
3341 | case ATA_12: | 3338 | case ATA_12: |
3342 | case ATA_16: | 3339 | case ATA_16: |
3343 | return ata_scsi_pass_thru; | 3340 | return ata_scsi_pass_thru; |
3344 | 3341 | ||
3345 | case MODE_SELECT: | 3342 | case MODE_SELECT: |
3346 | case MODE_SELECT_10: | 3343 | case MODE_SELECT_10: |
3347 | return ata_scsi_mode_select_xlat; | 3344 | return ata_scsi_mode_select_xlat; |
3348 | break; | 3345 | break; |
3349 | 3346 | ||
3350 | case START_STOP: | 3347 | case START_STOP: |
3351 | return ata_scsi_start_stop_xlat; | 3348 | return ata_scsi_start_stop_xlat; |
3352 | } | 3349 | } |
3353 | 3350 | ||
3354 | return NULL; | 3351 | return NULL; |
3355 | } | 3352 | } |
3356 | 3353 | ||
3357 | /** | 3354 | /** |
3358 | * ata_scsi_dump_cdb - dump SCSI command contents to dmesg | 3355 | * ata_scsi_dump_cdb - dump SCSI command contents to dmesg |
3359 | * @ap: ATA port to which the command was being sent | 3356 | * @ap: ATA port to which the command was being sent |
3360 | * @cmd: SCSI command to dump | 3357 | * @cmd: SCSI command to dump |
3361 | * | 3358 | * |
3362 | * Prints the contents of a SCSI command via printk(). | 3359 | * Prints the contents of a SCSI command via printk(). |
3363 | */ | 3360 | */ |
3364 | 3361 | ||
3365 | static inline void ata_scsi_dump_cdb(struct ata_port *ap, | 3362 | static inline void ata_scsi_dump_cdb(struct ata_port *ap, |
3366 | struct scsi_cmnd *cmd) | 3363 | struct scsi_cmnd *cmd) |
3367 | { | 3364 | { |
3368 | #ifdef ATA_DEBUG | 3365 | #ifdef ATA_DEBUG |
3369 | struct scsi_device *scsidev = cmd->device; | 3366 | struct scsi_device *scsidev = cmd->device; |
3370 | u8 *scsicmd = cmd->cmnd; | 3367 | u8 *scsicmd = cmd->cmnd; |
3371 | 3368 | ||
3372 | DPRINTK("CDB (%u:%d,%d,%d) %02x %02x %02x %02x %02x %02x %02x %02x %02x\n", | 3369 | DPRINTK("CDB (%u:%d,%d,%d) %02x %02x %02x %02x %02x %02x %02x %02x %02x\n", |
3373 | ap->print_id, | 3370 | ap->print_id, |
3374 | scsidev->channel, scsidev->id, scsidev->lun, | 3371 | scsidev->channel, scsidev->id, scsidev->lun, |
3375 | scsicmd[0], scsicmd[1], scsicmd[2], scsicmd[3], | 3372 | scsicmd[0], scsicmd[1], scsicmd[2], scsicmd[3], |
3376 | scsicmd[4], scsicmd[5], scsicmd[6], scsicmd[7], | 3373 | scsicmd[4], scsicmd[5], scsicmd[6], scsicmd[7], |
3377 | scsicmd[8]); | 3374 | scsicmd[8]); |
3378 | #endif | 3375 | #endif |
3379 | } | 3376 | } |
3380 | 3377 | ||
3381 | static inline int __ata_scsi_queuecmd(struct scsi_cmnd *scmd, | 3378 | static inline int __ata_scsi_queuecmd(struct scsi_cmnd *scmd, |
3382 | struct ata_device *dev) | 3379 | struct ata_device *dev) |
3383 | { | 3380 | { |
3384 | u8 scsi_op = scmd->cmnd[0]; | 3381 | u8 scsi_op = scmd->cmnd[0]; |
3385 | ata_xlat_func_t xlat_func; | 3382 | ata_xlat_func_t xlat_func; |
3386 | int rc = 0; | 3383 | int rc = 0; |
3387 | 3384 | ||
3388 | if (dev->class == ATA_DEV_ATA) { | 3385 | if (dev->class == ATA_DEV_ATA) { |
3389 | if (unlikely(!scmd->cmd_len || scmd->cmd_len > dev->cdb_len)) | 3386 | if (unlikely(!scmd->cmd_len || scmd->cmd_len > dev->cdb_len)) |
3390 | goto bad_cdb_len; | 3387 | goto bad_cdb_len; |
3391 | 3388 | ||
3392 | xlat_func = ata_get_xlat_func(dev, scsi_op); | 3389 | xlat_func = ata_get_xlat_func(dev, scsi_op); |
3393 | } else { | 3390 | } else { |
3394 | if (unlikely(!scmd->cmd_len)) | 3391 | if (unlikely(!scmd->cmd_len)) |
3395 | goto bad_cdb_len; | 3392 | goto bad_cdb_len; |
3396 | 3393 | ||
3397 | xlat_func = NULL; | 3394 | xlat_func = NULL; |
3398 | if (likely((scsi_op != ATA_16) || !atapi_passthru16)) { | 3395 | if (likely((scsi_op != ATA_16) || !atapi_passthru16)) { |
3399 | /* relay SCSI command to ATAPI device */ | 3396 | /* relay SCSI command to ATAPI device */ |
3400 | int len = COMMAND_SIZE(scsi_op); | 3397 | int len = COMMAND_SIZE(scsi_op); |
3401 | if (unlikely(len > scmd->cmd_len || len > dev->cdb_len)) | 3398 | if (unlikely(len > scmd->cmd_len || len > dev->cdb_len)) |
3402 | goto bad_cdb_len; | 3399 | goto bad_cdb_len; |
3403 | 3400 | ||
3404 | xlat_func = atapi_xlat; | 3401 | xlat_func = atapi_xlat; |
3405 | } else { | 3402 | } else { |
3406 | /* ATA_16 passthru, treat as an ATA command */ | 3403 | /* ATA_16 passthru, treat as an ATA command */ |
3407 | if (unlikely(scmd->cmd_len > 16)) | 3404 | if (unlikely(scmd->cmd_len > 16)) |
3408 | goto bad_cdb_len; | 3405 | goto bad_cdb_len; |
3409 | 3406 | ||
3410 | xlat_func = ata_get_xlat_func(dev, scsi_op); | 3407 | xlat_func = ata_get_xlat_func(dev, scsi_op); |
3411 | } | 3408 | } |
3412 | } | 3409 | } |
3413 | 3410 | ||
3414 | if (xlat_func) | 3411 | if (xlat_func) |
3415 | rc = ata_scsi_translate(dev, scmd, xlat_func); | 3412 | rc = ata_scsi_translate(dev, scmd, xlat_func); |
3416 | else | 3413 | else |
3417 | ata_scsi_simulate(dev, scmd); | 3414 | ata_scsi_simulate(dev, scmd); |
3418 | 3415 | ||
3419 | return rc; | 3416 | return rc; |
3420 | 3417 | ||
3421 | bad_cdb_len: | 3418 | bad_cdb_len: |
3422 | DPRINTK("bad CDB len=%u, scsi_op=0x%02x, max=%u\n", | 3419 | DPRINTK("bad CDB len=%u, scsi_op=0x%02x, max=%u\n", |
3423 | scmd->cmd_len, scsi_op, dev->cdb_len); | 3420 | scmd->cmd_len, scsi_op, dev->cdb_len); |
3424 | scmd->result = DID_ERROR << 16; | 3421 | scmd->result = DID_ERROR << 16; |
3425 | scmd->scsi_done(scmd); | 3422 | scmd->scsi_done(scmd); |
3426 | return 0; | 3423 | return 0; |
3427 | } | 3424 | } |
3428 | 3425 | ||
3429 | /** | 3426 | /** |
3430 | * ata_scsi_queuecmd - Issue SCSI cdb to libata-managed device | 3427 | * ata_scsi_queuecmd - Issue SCSI cdb to libata-managed device |
3431 | * @shost: SCSI host of command to be sent | 3428 | * @shost: SCSI host of command to be sent |
3432 | * @cmd: SCSI command to be sent | 3429 | * @cmd: SCSI command to be sent |
3433 | * | 3430 | * |
3434 | * In some cases, this function translates SCSI commands into | 3431 | * In some cases, this function translates SCSI commands into |
3435 | * ATA taskfiles, and queues the taskfiles to be sent to | 3432 | * ATA taskfiles, and queues the taskfiles to be sent to |
3436 | * hardware. In other cases, this function simulates a | 3433 | * hardware. In other cases, this function simulates a |
3437 | * SCSI device by evaluating and responding to certain | 3434 | * SCSI device by evaluating and responding to certain |
3438 | * SCSI commands. This creates the overall effect of | 3435 | * SCSI commands. This creates the overall effect of |
3439 | * ATA and ATAPI devices appearing as SCSI devices. | 3436 | * ATA and ATAPI devices appearing as SCSI devices. |
3440 | * | 3437 | * |
3441 | * LOCKING: | 3438 | * LOCKING: |
3442 | * ATA host lock | 3439 | * ATA host lock |
3443 | * | 3440 | * |
3444 | * RETURNS: | 3441 | * RETURNS: |
3445 | * Return value from __ata_scsi_queuecmd() if @cmd can be queued, | 3442 | * Return value from __ata_scsi_queuecmd() if @cmd can be queued, |
3446 | * 0 otherwise. | 3443 | * 0 otherwise. |
3447 | */ | 3444 | */ |
3448 | int ata_scsi_queuecmd(struct Scsi_Host *shost, struct scsi_cmnd *cmd) | 3445 | int ata_scsi_queuecmd(struct Scsi_Host *shost, struct scsi_cmnd *cmd) |
3449 | { | 3446 | { |
3450 | struct ata_port *ap; | 3447 | struct ata_port *ap; |
3451 | struct ata_device *dev; | 3448 | struct ata_device *dev; |
3452 | struct scsi_device *scsidev = cmd->device; | 3449 | struct scsi_device *scsidev = cmd->device; |
3453 | int rc = 0; | 3450 | int rc = 0; |
3454 | unsigned long irq_flags; | 3451 | unsigned long irq_flags; |
3455 | 3452 | ||
3456 | ap = ata_shost_to_port(shost); | 3453 | ap = ata_shost_to_port(shost); |
3457 | 3454 | ||
3458 | spin_lock_irqsave(ap->lock, irq_flags); | 3455 | spin_lock_irqsave(ap->lock, irq_flags); |
3459 | 3456 | ||
3460 | ata_scsi_dump_cdb(ap, cmd); | 3457 | ata_scsi_dump_cdb(ap, cmd); |
3461 | 3458 | ||
3462 | dev = ata_scsi_find_dev(ap, scsidev); | 3459 | dev = ata_scsi_find_dev(ap, scsidev); |
3463 | if (likely(dev)) | 3460 | if (likely(dev)) |
3464 | rc = __ata_scsi_queuecmd(cmd, dev); | 3461 | rc = __ata_scsi_queuecmd(cmd, dev); |
3465 | else { | 3462 | else { |
3466 | cmd->result = (DID_BAD_TARGET << 16); | 3463 | cmd->result = (DID_BAD_TARGET << 16); |
3467 | cmd->scsi_done(cmd); | 3464 | cmd->scsi_done(cmd); |
3468 | } | 3465 | } |
3469 | 3466 | ||
3470 | spin_unlock_irqrestore(ap->lock, irq_flags); | 3467 | spin_unlock_irqrestore(ap->lock, irq_flags); |
3471 | 3468 | ||
3472 | return rc; | 3469 | return rc; |
3473 | } | 3470 | } |
3474 | 3471 | ||
3475 | /** | 3472 | /** |
3476 | * ata_scsi_simulate - simulate SCSI command on ATA device | 3473 | * ata_scsi_simulate - simulate SCSI command on ATA device |
3477 | * @dev: the target device | 3474 | * @dev: the target device |
3478 | * @cmd: SCSI command being sent to device. | 3475 | * @cmd: SCSI command being sent to device. |
3479 | * | 3476 | * |
3480 | * Interprets and directly executes a select list of SCSI commands | 3477 | * Interprets and directly executes a select list of SCSI commands |
3481 | * that can be handled internally. | 3478 | * that can be handled internally. |
3482 | * | 3479 | * |
3483 | * LOCKING: | 3480 | * LOCKING: |
3484 | * spin_lock_irqsave(host lock) | 3481 | * spin_lock_irqsave(host lock) |
3485 | */ | 3482 | */ |
3486 | 3483 | ||
3487 | void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd) | 3484 | void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd) |
3488 | { | 3485 | { |
3489 | struct ata_scsi_args args; | 3486 | struct ata_scsi_args args; |
3490 | const u8 *scsicmd = cmd->cmnd; | 3487 | const u8 *scsicmd = cmd->cmnd; |
3491 | u8 tmp8; | 3488 | u8 tmp8; |
3492 | 3489 | ||
3493 | args.dev = dev; | 3490 | args.dev = dev; |
3494 | args.id = dev->id; | 3491 | args.id = dev->id; |
3495 | args.cmd = cmd; | 3492 | args.cmd = cmd; |
3496 | args.done = cmd->scsi_done; | 3493 | args.done = cmd->scsi_done; |
3497 | 3494 | ||
3498 | switch(scsicmd[0]) { | 3495 | switch(scsicmd[0]) { |
3499 | /* TODO: worth improving? */ | 3496 | /* TODO: worth improving? */ |
3500 | case FORMAT_UNIT: | 3497 | case FORMAT_UNIT: |
3501 | ata_scsi_invalid_field(cmd); | 3498 | ata_scsi_invalid_field(cmd); |
3502 | break; | 3499 | break; |
3503 | 3500 | ||
3504 | case INQUIRY: | 3501 | case INQUIRY: |
3505 | if (scsicmd[1] & 2) /* is CmdDt set? */ | 3502 | if (scsicmd[1] & 2) /* is CmdDt set? */ |
3506 | ata_scsi_invalid_field(cmd); | 3503 | ata_scsi_invalid_field(cmd); |
3507 | else if ((scsicmd[1] & 1) == 0) /* is EVPD clear? */ | 3504 | else if ((scsicmd[1] & 1) == 0) /* is EVPD clear? */ |
3508 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_std); | 3505 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_std); |
3509 | else switch (scsicmd[2]) { | 3506 | else switch (scsicmd[2]) { |
3510 | case 0x00: | 3507 | case 0x00: |
3511 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_00); | 3508 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_00); |
3512 | break; | 3509 | break; |
3513 | case 0x80: | 3510 | case 0x80: |
3514 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_80); | 3511 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_80); |
3515 | break; | 3512 | break; |
3516 | case 0x83: | 3513 | case 0x83: |
3517 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_83); | 3514 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_83); |
3518 | break; | 3515 | break; |
3519 | case 0x89: | 3516 | case 0x89: |
3520 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_89); | 3517 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_89); |
3521 | break; | 3518 | break; |
3522 | case 0xb0: | 3519 | case 0xb0: |
3523 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_b0); | 3520 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_b0); |
3524 | break; | 3521 | break; |
3525 | case 0xb1: | 3522 | case 0xb1: |
3526 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_b1); | 3523 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_b1); |
3527 | break; | 3524 | break; |
3528 | case 0xb2: | 3525 | case 0xb2: |
3529 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_b2); | 3526 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_b2); |
3530 | break; | 3527 | break; |
3531 | default: | 3528 | default: |
3532 | ata_scsi_invalid_field(cmd); | 3529 | ata_scsi_invalid_field(cmd); |
3533 | break; | 3530 | break; |
3534 | } | 3531 | } |
3535 | break; | 3532 | break; |
3536 | 3533 | ||
3537 | case MODE_SENSE: | 3534 | case MODE_SENSE: |
3538 | case MODE_SENSE_10: | 3535 | case MODE_SENSE_10: |
3539 | ata_scsi_rbuf_fill(&args, ata_scsiop_mode_sense); | 3536 | ata_scsi_rbuf_fill(&args, ata_scsiop_mode_sense); |
3540 | break; | 3537 | break; |
3541 | 3538 | ||
3542 | case READ_CAPACITY: | 3539 | case READ_CAPACITY: |
3543 | ata_scsi_rbuf_fill(&args, ata_scsiop_read_cap); | 3540 | ata_scsi_rbuf_fill(&args, ata_scsiop_read_cap); |
3544 | break; | 3541 | break; |
3545 | 3542 | ||
3546 | case SERVICE_ACTION_IN: | 3543 | case SERVICE_ACTION_IN: |
3547 | if ((scsicmd[1] & 0x1f) == SAI_READ_CAPACITY_16) | 3544 | if ((scsicmd[1] & 0x1f) == SAI_READ_CAPACITY_16) |
3548 | ata_scsi_rbuf_fill(&args, ata_scsiop_read_cap); | 3545 | ata_scsi_rbuf_fill(&args, ata_scsiop_read_cap); |
3549 | else | 3546 | else |
3550 | ata_scsi_invalid_field(cmd); | 3547 | ata_scsi_invalid_field(cmd); |
3551 | break; | 3548 | break; |
3552 | 3549 | ||
3553 | case REPORT_LUNS: | 3550 | case REPORT_LUNS: |
3554 | ata_scsi_rbuf_fill(&args, ata_scsiop_report_luns); | 3551 | ata_scsi_rbuf_fill(&args, ata_scsiop_report_luns); |
3555 | break; | 3552 | break; |
3556 | 3553 | ||
3557 | case REQUEST_SENSE: | 3554 | case REQUEST_SENSE: |
3558 | ata_scsi_set_sense(cmd, 0, 0, 0); | 3555 | ata_scsi_set_sense(cmd, 0, 0, 0); |
3559 | cmd->result = (DRIVER_SENSE << 24); | 3556 | cmd->result = (DRIVER_SENSE << 24); |
3560 | cmd->scsi_done(cmd); | 3557 | cmd->scsi_done(cmd); |
3561 | break; | 3558 | break; |
3562 | 3559 | ||
3563 | /* if we reach this, then writeback caching is disabled, | 3560 | /* if we reach this, then writeback caching is disabled, |
3564 | * turning this into a no-op. | 3561 | * turning this into a no-op. |
3565 | */ | 3562 | */ |
3566 | case SYNCHRONIZE_CACHE: | 3563 | case SYNCHRONIZE_CACHE: |
3567 | /* fall through */ | 3564 | /* fall through */ |
3568 | 3565 | ||
3569 | /* no-op's, complete with success */ | 3566 | /* no-op's, complete with success */ |
3570 | case REZERO_UNIT: | 3567 | case REZERO_UNIT: |
3571 | case SEEK_6: | 3568 | case SEEK_6: |
3572 | case SEEK_10: | 3569 | case SEEK_10: |
3573 | case TEST_UNIT_READY: | 3570 | case TEST_UNIT_READY: |
3574 | ata_scsi_rbuf_fill(&args, ata_scsiop_noop); | 3571 | ata_scsi_rbuf_fill(&args, ata_scsiop_noop); |
3575 | break; | 3572 | break; |
3576 | 3573 | ||
3577 | case SEND_DIAGNOSTIC: | 3574 | case SEND_DIAGNOSTIC: |
3578 | tmp8 = scsicmd[1] & ~(1 << 3); | 3575 | tmp8 = scsicmd[1] & ~(1 << 3); |
3579 | if ((tmp8 == 0x4) && (!scsicmd[3]) && (!scsicmd[4])) | 3576 | if ((tmp8 == 0x4) && (!scsicmd[3]) && (!scsicmd[4])) |
3580 | ata_scsi_rbuf_fill(&args, ata_scsiop_noop); | 3577 | ata_scsi_rbuf_fill(&args, ata_scsiop_noop); |
3581 | else | 3578 | else |
3582 | ata_scsi_invalid_field(cmd); | 3579 | ata_scsi_invalid_field(cmd); |
3583 | break; | 3580 | break; |
3584 | 3581 | ||
3585 | /* all other commands */ | 3582 | /* all other commands */ |
3586 | default: | 3583 | default: |
3587 | ata_scsi_set_sense(cmd, ILLEGAL_REQUEST, 0x20, 0x0); | 3584 | ata_scsi_set_sense(cmd, ILLEGAL_REQUEST, 0x20, 0x0); |
3588 | /* "Invalid command operation code" */ | 3585 | /* "Invalid command operation code" */ |
3589 | cmd->scsi_done(cmd); | 3586 | cmd->scsi_done(cmd); |
3590 | break; | 3587 | break; |
3591 | } | 3588 | } |
3592 | } | 3589 | } |
3593 | 3590 | ||
3594 | int ata_scsi_add_hosts(struct ata_host *host, struct scsi_host_template *sht) | 3591 | int ata_scsi_add_hosts(struct ata_host *host, struct scsi_host_template *sht) |
3595 | { | 3592 | { |
3596 | int i, rc; | 3593 | int i, rc; |
3597 | 3594 | ||
3598 | for (i = 0; i < host->n_ports; i++) { | 3595 | for (i = 0; i < host->n_ports; i++) { |
3599 | struct ata_port *ap = host->ports[i]; | 3596 | struct ata_port *ap = host->ports[i]; |
3600 | struct Scsi_Host *shost; | 3597 | struct Scsi_Host *shost; |
3601 | 3598 | ||
3602 | rc = -ENOMEM; | 3599 | rc = -ENOMEM; |
3603 | shost = scsi_host_alloc(sht, sizeof(struct ata_port *)); | 3600 | shost = scsi_host_alloc(sht, sizeof(struct ata_port *)); |
3604 | if (!shost) | 3601 | if (!shost) |
3605 | goto err_alloc; | 3602 | goto err_alloc; |
3606 | 3603 | ||
3607 | shost->eh_noresume = 1; | 3604 | shost->eh_noresume = 1; |
3608 | *(struct ata_port **)&shost->hostdata[0] = ap; | 3605 | *(struct ata_port **)&shost->hostdata[0] = ap; |
3609 | ap->scsi_host = shost; | 3606 | ap->scsi_host = shost; |
3610 | 3607 | ||
3611 | shost->transportt = ata_scsi_transport_template; | 3608 | shost->transportt = ata_scsi_transport_template; |
3612 | shost->unique_id = ap->print_id; | 3609 | shost->unique_id = ap->print_id; |
3613 | shost->max_id = 16; | 3610 | shost->max_id = 16; |
3614 | shost->max_lun = 1; | 3611 | shost->max_lun = 1; |
3615 | shost->max_channel = 1; | 3612 | shost->max_channel = 1; |
3616 | shost->max_cmd_len = 16; | 3613 | shost->max_cmd_len = 16; |
3617 | 3614 | ||
3618 | /* Schedule policy is determined by ->qc_defer() | 3615 | /* Schedule policy is determined by ->qc_defer() |
3619 | * callback and it needs to see every deferred qc. | 3616 | * callback and it needs to see every deferred qc. |
3620 | * Set host_blocked to 1 to prevent SCSI midlayer from | 3617 | * Set host_blocked to 1 to prevent SCSI midlayer from |
3621 | * automatically deferring requests. | 3618 | * automatically deferring requests. |
3622 | */ | 3619 | */ |
3623 | shost->max_host_blocked = 1; | 3620 | shost->max_host_blocked = 1; |
3624 | 3621 | ||
3625 | rc = scsi_add_host_with_dma(ap->scsi_host, | 3622 | rc = scsi_add_host_with_dma(ap->scsi_host, |
3626 | &ap->tdev, ap->host->dev); | 3623 | &ap->tdev, ap->host->dev); |
3627 | if (rc) | 3624 | if (rc) |
3628 | goto err_add; | 3625 | goto err_add; |
3629 | } | 3626 | } |
3630 | 3627 | ||
3631 | return 0; | 3628 | return 0; |
3632 | 3629 | ||
3633 | err_add: | 3630 | err_add: |
3634 | scsi_host_put(host->ports[i]->scsi_host); | 3631 | scsi_host_put(host->ports[i]->scsi_host); |
3635 | err_alloc: | 3632 | err_alloc: |
3636 | while (--i >= 0) { | 3633 | while (--i >= 0) { |
3637 | struct Scsi_Host *shost = host->ports[i]->scsi_host; | 3634 | struct Scsi_Host *shost = host->ports[i]->scsi_host; |
3638 | 3635 | ||
3639 | scsi_remove_host(shost); | 3636 | scsi_remove_host(shost); |
3640 | scsi_host_put(shost); | 3637 | scsi_host_put(shost); |
3641 | } | 3638 | } |
3642 | return rc; | 3639 | return rc; |
3643 | } | 3640 | } |
3644 | 3641 | ||
3645 | void ata_scsi_scan_host(struct ata_port *ap, int sync) | 3642 | void ata_scsi_scan_host(struct ata_port *ap, int sync) |
3646 | { | 3643 | { |
3647 | int tries = 5; | 3644 | int tries = 5; |
3648 | struct ata_device *last_failed_dev = NULL; | 3645 | struct ata_device *last_failed_dev = NULL; |
3649 | struct ata_link *link; | 3646 | struct ata_link *link; |
3650 | struct ata_device *dev; | 3647 | struct ata_device *dev; |
3651 | 3648 | ||
3652 | repeat: | 3649 | repeat: |
3653 | ata_for_each_link(link, ap, EDGE) { | 3650 | ata_for_each_link(link, ap, EDGE) { |
3654 | ata_for_each_dev(dev, link, ENABLED) { | 3651 | ata_for_each_dev(dev, link, ENABLED) { |
3655 | struct scsi_device *sdev; | 3652 | struct scsi_device *sdev; |
3656 | int channel = 0, id = 0; | 3653 | int channel = 0, id = 0; |
3657 | 3654 | ||
3658 | if (dev->sdev) | 3655 | if (dev->sdev) |
3659 | continue; | 3656 | continue; |
3660 | 3657 | ||
3661 | if (ata_is_host_link(link)) | 3658 | if (ata_is_host_link(link)) |
3662 | id = dev->devno; | 3659 | id = dev->devno; |
3663 | else | 3660 | else |
3664 | channel = link->pmp; | 3661 | channel = link->pmp; |
3665 | 3662 | ||
3666 | sdev = __scsi_add_device(ap->scsi_host, channel, id, 0, | 3663 | sdev = __scsi_add_device(ap->scsi_host, channel, id, 0, |
3667 | NULL); | 3664 | NULL); |
3668 | if (!IS_ERR(sdev)) { | 3665 | if (!IS_ERR(sdev)) { |
3669 | dev->sdev = sdev; | 3666 | dev->sdev = sdev; |
3670 | scsi_device_put(sdev); | 3667 | scsi_device_put(sdev); |
3671 | if (zpodd_dev_enabled(dev)) | 3668 | if (zpodd_dev_enabled(dev)) |
3672 | dev_pm_qos_expose_flags( | 3669 | dev_pm_qos_expose_flags( |
3673 | &sdev->sdev_gendev, 0); | 3670 | &sdev->sdev_gendev, 0); |
3674 | } else { | 3671 | } else { |
3675 | dev->sdev = NULL; | 3672 | dev->sdev = NULL; |
3676 | } | 3673 | } |
3677 | } | 3674 | } |
3678 | } | 3675 | } |
3679 | 3676 | ||
3680 | /* If we scanned while EH was in progress or allocation | 3677 | /* If we scanned while EH was in progress or allocation |
3681 | * failure occurred, scan would have failed silently. Check | 3678 | * failure occurred, scan would have failed silently. Check |
3682 | * whether all devices are attached. | 3679 | * whether all devices are attached. |
3683 | */ | 3680 | */ |
3684 | ata_for_each_link(link, ap, EDGE) { | 3681 | ata_for_each_link(link, ap, EDGE) { |
3685 | ata_for_each_dev(dev, link, ENABLED) { | 3682 | ata_for_each_dev(dev, link, ENABLED) { |
3686 | if (!dev->sdev) | 3683 | if (!dev->sdev) |
3687 | goto exit_loop; | 3684 | goto exit_loop; |
3688 | } | 3685 | } |
3689 | } | 3686 | } |
3690 | exit_loop: | 3687 | exit_loop: |
3691 | if (!link) | 3688 | if (!link) |
3692 | return; | 3689 | return; |
3693 | 3690 | ||
3694 | /* we're missing some SCSI devices */ | 3691 | /* we're missing some SCSI devices */ |
3695 | if (sync) { | 3692 | if (sync) { |
3696 | /* If caller requested synchrnous scan && we've made | 3693 | /* If caller requested synchrnous scan && we've made |
3697 | * any progress, sleep briefly and repeat. | 3694 | * any progress, sleep briefly and repeat. |
3698 | */ | 3695 | */ |
3699 | if (dev != last_failed_dev) { | 3696 | if (dev != last_failed_dev) { |
3700 | msleep(100); | 3697 | msleep(100); |
3701 | last_failed_dev = dev; | 3698 | last_failed_dev = dev; |
3702 | goto repeat; | 3699 | goto repeat; |
3703 | } | 3700 | } |
3704 | 3701 | ||
3705 | /* We might be failing to detect boot device, give it | 3702 | /* We might be failing to detect boot device, give it |
3706 | * a few more chances. | 3703 | * a few more chances. |
3707 | */ | 3704 | */ |
3708 | if (--tries) { | 3705 | if (--tries) { |
3709 | msleep(100); | 3706 | msleep(100); |
3710 | goto repeat; | 3707 | goto repeat; |
3711 | } | 3708 | } |
3712 | 3709 | ||
3713 | ata_port_err(ap, | 3710 | ata_port_err(ap, |
3714 | "WARNING: synchronous SCSI scan failed without making any progress, switching to async\n"); | 3711 | "WARNING: synchronous SCSI scan failed without making any progress, switching to async\n"); |
3715 | } | 3712 | } |
3716 | 3713 | ||
3717 | queue_delayed_work(system_long_wq, &ap->hotplug_task, | 3714 | queue_delayed_work(system_long_wq, &ap->hotplug_task, |
3718 | round_jiffies_relative(HZ)); | 3715 | round_jiffies_relative(HZ)); |
3719 | } | 3716 | } |
3720 | 3717 | ||
3721 | /** | 3718 | /** |
3722 | * ata_scsi_offline_dev - offline attached SCSI device | 3719 | * ata_scsi_offline_dev - offline attached SCSI device |
3723 | * @dev: ATA device to offline attached SCSI device for | 3720 | * @dev: ATA device to offline attached SCSI device for |
3724 | * | 3721 | * |
3725 | * This function is called from ata_eh_hotplug() and responsible | 3722 | * This function is called from ata_eh_hotplug() and responsible |
3726 | * for taking the SCSI device attached to @dev offline. This | 3723 | * for taking the SCSI device attached to @dev offline. This |
3727 | * function is called with host lock which protects dev->sdev | 3724 | * function is called with host lock which protects dev->sdev |
3728 | * against clearing. | 3725 | * against clearing. |
3729 | * | 3726 | * |
3730 | * LOCKING: | 3727 | * LOCKING: |
3731 | * spin_lock_irqsave(host lock) | 3728 | * spin_lock_irqsave(host lock) |
3732 | * | 3729 | * |
3733 | * RETURNS: | 3730 | * RETURNS: |
3734 | * 1 if attached SCSI device exists, 0 otherwise. | 3731 | * 1 if attached SCSI device exists, 0 otherwise. |
3735 | */ | 3732 | */ |
3736 | int ata_scsi_offline_dev(struct ata_device *dev) | 3733 | int ata_scsi_offline_dev(struct ata_device *dev) |
3737 | { | 3734 | { |
3738 | if (dev->sdev) { | 3735 | if (dev->sdev) { |
3739 | scsi_device_set_state(dev->sdev, SDEV_OFFLINE); | 3736 | scsi_device_set_state(dev->sdev, SDEV_OFFLINE); |
3740 | return 1; | 3737 | return 1; |
3741 | } | 3738 | } |
3742 | return 0; | 3739 | return 0; |
3743 | } | 3740 | } |
3744 | 3741 | ||
3745 | /** | 3742 | /** |
3746 | * ata_scsi_remove_dev - remove attached SCSI device | 3743 | * ata_scsi_remove_dev - remove attached SCSI device |
3747 | * @dev: ATA device to remove attached SCSI device for | 3744 | * @dev: ATA device to remove attached SCSI device for |
3748 | * | 3745 | * |
3749 | * This function is called from ata_eh_scsi_hotplug() and | 3746 | * This function is called from ata_eh_scsi_hotplug() and |
3750 | * responsible for removing the SCSI device attached to @dev. | 3747 | * responsible for removing the SCSI device attached to @dev. |
3751 | * | 3748 | * |
3752 | * LOCKING: | 3749 | * LOCKING: |
3753 | * Kernel thread context (may sleep). | 3750 | * Kernel thread context (may sleep). |
3754 | */ | 3751 | */ |
3755 | static void ata_scsi_remove_dev(struct ata_device *dev) | 3752 | static void ata_scsi_remove_dev(struct ata_device *dev) |
3756 | { | 3753 | { |
3757 | struct ata_port *ap = dev->link->ap; | 3754 | struct ata_port *ap = dev->link->ap; |
3758 | struct scsi_device *sdev; | 3755 | struct scsi_device *sdev; |
3759 | unsigned long flags; | 3756 | unsigned long flags; |
3760 | 3757 | ||
3761 | /* Alas, we need to grab scan_mutex to ensure SCSI device | 3758 | /* Alas, we need to grab scan_mutex to ensure SCSI device |
3762 | * state doesn't change underneath us and thus | 3759 | * state doesn't change underneath us and thus |
3763 | * scsi_device_get() always succeeds. The mutex locking can | 3760 | * scsi_device_get() always succeeds. The mutex locking can |
3764 | * be removed if there is __scsi_device_get() interface which | 3761 | * be removed if there is __scsi_device_get() interface which |
3765 | * increments reference counts regardless of device state. | 3762 | * increments reference counts regardless of device state. |
3766 | */ | 3763 | */ |
3767 | mutex_lock(&ap->scsi_host->scan_mutex); | 3764 | mutex_lock(&ap->scsi_host->scan_mutex); |
3768 | spin_lock_irqsave(ap->lock, flags); | 3765 | spin_lock_irqsave(ap->lock, flags); |
3769 | 3766 | ||
3770 | if (zpodd_dev_enabled(dev)) | 3767 | if (zpodd_dev_enabled(dev)) |
3771 | zpodd_exit(dev); | 3768 | zpodd_exit(dev); |
3772 | 3769 | ||
3773 | /* clearing dev->sdev is protected by host lock */ | 3770 | /* clearing dev->sdev is protected by host lock */ |
3774 | sdev = dev->sdev; | 3771 | sdev = dev->sdev; |
3775 | dev->sdev = NULL; | 3772 | dev->sdev = NULL; |
3776 | 3773 | ||
3777 | if (sdev) { | 3774 | if (sdev) { |
3778 | /* If user initiated unplug races with us, sdev can go | 3775 | /* If user initiated unplug races with us, sdev can go |
3779 | * away underneath us after the host lock and | 3776 | * away underneath us after the host lock and |
3780 | * scan_mutex are released. Hold onto it. | 3777 | * scan_mutex are released. Hold onto it. |
3781 | */ | 3778 | */ |
3782 | if (scsi_device_get(sdev) == 0) { | 3779 | if (scsi_device_get(sdev) == 0) { |
3783 | /* The following ensures the attached sdev is | 3780 | /* The following ensures the attached sdev is |
3784 | * offline on return from ata_scsi_offline_dev() | 3781 | * offline on return from ata_scsi_offline_dev() |
3785 | * regardless it wins or loses the race | 3782 | * regardless it wins or loses the race |
3786 | * against this function. | 3783 | * against this function. |
3787 | */ | 3784 | */ |
3788 | scsi_device_set_state(sdev, SDEV_OFFLINE); | 3785 | scsi_device_set_state(sdev, SDEV_OFFLINE); |
3789 | } else { | 3786 | } else { |
3790 | WARN_ON(1); | 3787 | WARN_ON(1); |
3791 | sdev = NULL; | 3788 | sdev = NULL; |
3792 | } | 3789 | } |
3793 | } | 3790 | } |
3794 | 3791 | ||
3795 | spin_unlock_irqrestore(ap->lock, flags); | 3792 | spin_unlock_irqrestore(ap->lock, flags); |
3796 | mutex_unlock(&ap->scsi_host->scan_mutex); | 3793 | mutex_unlock(&ap->scsi_host->scan_mutex); |
3797 | 3794 | ||
3798 | if (sdev) { | 3795 | if (sdev) { |
3799 | ata_dev_info(dev, "detaching (SCSI %s)\n", | 3796 | ata_dev_info(dev, "detaching (SCSI %s)\n", |
3800 | dev_name(&sdev->sdev_gendev)); | 3797 | dev_name(&sdev->sdev_gendev)); |
3801 | 3798 | ||
3802 | scsi_remove_device(sdev); | 3799 | scsi_remove_device(sdev); |
3803 | scsi_device_put(sdev); | 3800 | scsi_device_put(sdev); |
3804 | } | 3801 | } |
3805 | } | 3802 | } |
3806 | 3803 | ||
3807 | static void ata_scsi_handle_link_detach(struct ata_link *link) | 3804 | static void ata_scsi_handle_link_detach(struct ata_link *link) |
3808 | { | 3805 | { |
3809 | struct ata_port *ap = link->ap; | 3806 | struct ata_port *ap = link->ap; |
3810 | struct ata_device *dev; | 3807 | struct ata_device *dev; |
3811 | 3808 | ||
3812 | ata_for_each_dev(dev, link, ALL) { | 3809 | ata_for_each_dev(dev, link, ALL) { |
3813 | unsigned long flags; | 3810 | unsigned long flags; |
3814 | 3811 | ||
3815 | if (!(dev->flags & ATA_DFLAG_DETACHED)) | 3812 | if (!(dev->flags & ATA_DFLAG_DETACHED)) |
3816 | continue; | 3813 | continue; |
3817 | 3814 | ||
3818 | spin_lock_irqsave(ap->lock, flags); | 3815 | spin_lock_irqsave(ap->lock, flags); |
3819 | dev->flags &= ~ATA_DFLAG_DETACHED; | 3816 | dev->flags &= ~ATA_DFLAG_DETACHED; |
3820 | spin_unlock_irqrestore(ap->lock, flags); | 3817 | spin_unlock_irqrestore(ap->lock, flags); |
3821 | 3818 | ||
3822 | ata_scsi_remove_dev(dev); | 3819 | ata_scsi_remove_dev(dev); |
3823 | } | 3820 | } |
3824 | } | 3821 | } |
3825 | 3822 | ||
3826 | /** | 3823 | /** |
3827 | * ata_scsi_media_change_notify - send media change event | 3824 | * ata_scsi_media_change_notify - send media change event |
3828 | * @dev: Pointer to the disk device with media change event | 3825 | * @dev: Pointer to the disk device with media change event |
3829 | * | 3826 | * |
3830 | * Tell the block layer to send a media change notification | 3827 | * Tell the block layer to send a media change notification |
3831 | * event. | 3828 | * event. |
3832 | * | 3829 | * |
3833 | * LOCKING: | 3830 | * LOCKING: |
3834 | * spin_lock_irqsave(host lock) | 3831 | * spin_lock_irqsave(host lock) |
3835 | */ | 3832 | */ |
3836 | void ata_scsi_media_change_notify(struct ata_device *dev) | 3833 | void ata_scsi_media_change_notify(struct ata_device *dev) |
3837 | { | 3834 | { |
3838 | if (dev->sdev) | 3835 | if (dev->sdev) |
3839 | sdev_evt_send_simple(dev->sdev, SDEV_EVT_MEDIA_CHANGE, | 3836 | sdev_evt_send_simple(dev->sdev, SDEV_EVT_MEDIA_CHANGE, |
3840 | GFP_ATOMIC); | 3837 | GFP_ATOMIC); |
3841 | } | 3838 | } |
3842 | 3839 | ||
3843 | /** | 3840 | /** |
3844 | * ata_scsi_hotplug - SCSI part of hotplug | 3841 | * ata_scsi_hotplug - SCSI part of hotplug |
3845 | * @work: Pointer to ATA port to perform SCSI hotplug on | 3842 | * @work: Pointer to ATA port to perform SCSI hotplug on |
3846 | * | 3843 | * |
3847 | * Perform SCSI part of hotplug. It's executed from a separate | 3844 | * Perform SCSI part of hotplug. It's executed from a separate |
3848 | * workqueue after EH completes. This is necessary because SCSI | 3845 | * workqueue after EH completes. This is necessary because SCSI |
3849 | * hot plugging requires working EH and hot unplugging is | 3846 | * hot plugging requires working EH and hot unplugging is |
3850 | * synchronized with hot plugging with a mutex. | 3847 | * synchronized with hot plugging with a mutex. |
3851 | * | 3848 | * |
3852 | * LOCKING: | 3849 | * LOCKING: |
3853 | * Kernel thread context (may sleep). | 3850 | * Kernel thread context (may sleep). |
3854 | */ | 3851 | */ |
3855 | void ata_scsi_hotplug(struct work_struct *work) | 3852 | void ata_scsi_hotplug(struct work_struct *work) |
3856 | { | 3853 | { |
3857 | struct ata_port *ap = | 3854 | struct ata_port *ap = |
3858 | container_of(work, struct ata_port, hotplug_task.work); | 3855 | container_of(work, struct ata_port, hotplug_task.work); |
3859 | int i; | 3856 | int i; |
3860 | 3857 | ||
3861 | if (ap->pflags & ATA_PFLAG_UNLOADING) { | 3858 | if (ap->pflags & ATA_PFLAG_UNLOADING) { |
3862 | DPRINTK("ENTER/EXIT - unloading\n"); | 3859 | DPRINTK("ENTER/EXIT - unloading\n"); |
3863 | return; | 3860 | return; |
3864 | } | 3861 | } |
3865 | 3862 | ||
3866 | DPRINTK("ENTER\n"); | 3863 | DPRINTK("ENTER\n"); |
3867 | mutex_lock(&ap->scsi_scan_mutex); | 3864 | mutex_lock(&ap->scsi_scan_mutex); |
3868 | 3865 | ||
3869 | /* Unplug detached devices. We cannot use link iterator here | 3866 | /* Unplug detached devices. We cannot use link iterator here |
3870 | * because PMP links have to be scanned even if PMP is | 3867 | * because PMP links have to be scanned even if PMP is |
3871 | * currently not attached. Iterate manually. | 3868 | * currently not attached. Iterate manually. |
3872 | */ | 3869 | */ |
3873 | ata_scsi_handle_link_detach(&ap->link); | 3870 | ata_scsi_handle_link_detach(&ap->link); |
3874 | if (ap->pmp_link) | 3871 | if (ap->pmp_link) |
3875 | for (i = 0; i < SATA_PMP_MAX_PORTS; i++) | 3872 | for (i = 0; i < SATA_PMP_MAX_PORTS; i++) |
3876 | ata_scsi_handle_link_detach(&ap->pmp_link[i]); | 3873 | ata_scsi_handle_link_detach(&ap->pmp_link[i]); |
3877 | 3874 | ||
3878 | /* scan for new ones */ | 3875 | /* scan for new ones */ |
3879 | ata_scsi_scan_host(ap, 0); | 3876 | ata_scsi_scan_host(ap, 0); |
3880 | 3877 | ||
3881 | mutex_unlock(&ap->scsi_scan_mutex); | 3878 | mutex_unlock(&ap->scsi_scan_mutex); |
3882 | DPRINTK("EXIT\n"); | 3879 | DPRINTK("EXIT\n"); |
3883 | } | 3880 | } |
3884 | 3881 | ||
3885 | /** | 3882 | /** |
3886 | * ata_scsi_user_scan - indication for user-initiated bus scan | 3883 | * ata_scsi_user_scan - indication for user-initiated bus scan |
3887 | * @shost: SCSI host to scan | 3884 | * @shost: SCSI host to scan |
3888 | * @channel: Channel to scan | 3885 | * @channel: Channel to scan |
3889 | * @id: ID to scan | 3886 | * @id: ID to scan |
3890 | * @lun: LUN to scan | 3887 | * @lun: LUN to scan |
3891 | * | 3888 | * |
3892 | * This function is called when user explicitly requests bus | 3889 | * This function is called when user explicitly requests bus |
3893 | * scan. Set probe pending flag and invoke EH. | 3890 | * scan. Set probe pending flag and invoke EH. |
3894 | * | 3891 | * |
3895 | * LOCKING: | 3892 | * LOCKING: |
3896 | * SCSI layer (we don't care) | 3893 | * SCSI layer (we don't care) |
3897 | * | 3894 | * |
3898 | * RETURNS: | 3895 | * RETURNS: |
3899 | * Zero. | 3896 | * Zero. |
3900 | */ | 3897 | */ |
3901 | int ata_scsi_user_scan(struct Scsi_Host *shost, unsigned int channel, | 3898 | int ata_scsi_user_scan(struct Scsi_Host *shost, unsigned int channel, |
3902 | unsigned int id, unsigned int lun) | 3899 | unsigned int id, unsigned int lun) |
3903 | { | 3900 | { |
3904 | struct ata_port *ap = ata_shost_to_port(shost); | 3901 | struct ata_port *ap = ata_shost_to_port(shost); |
3905 | unsigned long flags; | 3902 | unsigned long flags; |
3906 | int devno, rc = 0; | 3903 | int devno, rc = 0; |
3907 | 3904 | ||
3908 | if (!ap->ops->error_handler) | 3905 | if (!ap->ops->error_handler) |
3909 | return -EOPNOTSUPP; | 3906 | return -EOPNOTSUPP; |
3910 | 3907 | ||
3911 | if (lun != SCAN_WILD_CARD && lun) | 3908 | if (lun != SCAN_WILD_CARD && lun) |
3912 | return -EINVAL; | 3909 | return -EINVAL; |
3913 | 3910 | ||
3914 | if (!sata_pmp_attached(ap)) { | 3911 | if (!sata_pmp_attached(ap)) { |
3915 | if (channel != SCAN_WILD_CARD && channel) | 3912 | if (channel != SCAN_WILD_CARD && channel) |
3916 | return -EINVAL; | 3913 | return -EINVAL; |
3917 | devno = id; | 3914 | devno = id; |
3918 | } else { | 3915 | } else { |
3919 | if (id != SCAN_WILD_CARD && id) | 3916 | if (id != SCAN_WILD_CARD && id) |
3920 | return -EINVAL; | 3917 | return -EINVAL; |
3921 | devno = channel; | 3918 | devno = channel; |
3922 | } | 3919 | } |
3923 | 3920 | ||
3924 | spin_lock_irqsave(ap->lock, flags); | 3921 | spin_lock_irqsave(ap->lock, flags); |
3925 | 3922 | ||
3926 | if (devno == SCAN_WILD_CARD) { | 3923 | if (devno == SCAN_WILD_CARD) { |
3927 | struct ata_link *link; | 3924 | struct ata_link *link; |
3928 | 3925 | ||
3929 | ata_for_each_link(link, ap, EDGE) { | 3926 | ata_for_each_link(link, ap, EDGE) { |
3930 | struct ata_eh_info *ehi = &link->eh_info; | 3927 | struct ata_eh_info *ehi = &link->eh_info; |
3931 | ehi->probe_mask |= ATA_ALL_DEVICES; | 3928 | ehi->probe_mask |= ATA_ALL_DEVICES; |
3932 | ehi->action |= ATA_EH_RESET; | 3929 | ehi->action |= ATA_EH_RESET; |
3933 | } | 3930 | } |
3934 | } else { | 3931 | } else { |
3935 | struct ata_device *dev = ata_find_dev(ap, devno); | 3932 | struct ata_device *dev = ata_find_dev(ap, devno); |
3936 | 3933 | ||
3937 | if (dev) { | 3934 | if (dev) { |
3938 | struct ata_eh_info *ehi = &dev->link->eh_info; | 3935 | struct ata_eh_info *ehi = &dev->link->eh_info; |
3939 | ehi->probe_mask |= 1 << dev->devno; | 3936 | ehi->probe_mask |= 1 << dev->devno; |
3940 | ehi->action |= ATA_EH_RESET; | 3937 | ehi->action |= ATA_EH_RESET; |
3941 | } else | 3938 | } else |
3942 | rc = -EINVAL; | 3939 | rc = -EINVAL; |
3943 | } | 3940 | } |
3944 | 3941 | ||
3945 | if (rc == 0) { | 3942 | if (rc == 0) { |
3946 | ata_port_schedule_eh(ap); | 3943 | ata_port_schedule_eh(ap); |
3947 | spin_unlock_irqrestore(ap->lock, flags); | 3944 | spin_unlock_irqrestore(ap->lock, flags); |
3948 | ata_port_wait_eh(ap); | 3945 | ata_port_wait_eh(ap); |
3949 | } else | 3946 | } else |
3950 | spin_unlock_irqrestore(ap->lock, flags); | 3947 | spin_unlock_irqrestore(ap->lock, flags); |
3951 | 3948 | ||
3952 | return rc; | 3949 | return rc; |
3953 | } | 3950 | } |
3954 | 3951 | ||
3955 | /** | 3952 | /** |
3956 | * ata_scsi_dev_rescan - initiate scsi_rescan_device() | 3953 | * ata_scsi_dev_rescan - initiate scsi_rescan_device() |
3957 | * @work: Pointer to ATA port to perform scsi_rescan_device() | 3954 | * @work: Pointer to ATA port to perform scsi_rescan_device() |
3958 | * | 3955 | * |
3959 | * After ATA pass thru (SAT) commands are executed successfully, | 3956 | * After ATA pass thru (SAT) commands are executed successfully, |
3960 | * libata need to propagate the changes to SCSI layer. | 3957 | * libata need to propagate the changes to SCSI layer. |
3961 | * | 3958 | * |
3962 | * LOCKING: | 3959 | * LOCKING: |
3963 | * Kernel thread context (may sleep). | 3960 | * Kernel thread context (may sleep). |
3964 | */ | 3961 | */ |
3965 | void ata_scsi_dev_rescan(struct work_struct *work) | 3962 | void ata_scsi_dev_rescan(struct work_struct *work) |
3966 | { | 3963 | { |
3967 | struct ata_port *ap = | 3964 | struct ata_port *ap = |
3968 | container_of(work, struct ata_port, scsi_rescan_task); | 3965 | container_of(work, struct ata_port, scsi_rescan_task); |
3969 | struct ata_link *link; | 3966 | struct ata_link *link; |
3970 | struct ata_device *dev; | 3967 | struct ata_device *dev; |
3971 | unsigned long flags; | 3968 | unsigned long flags; |
3972 | 3969 | ||
3973 | mutex_lock(&ap->scsi_scan_mutex); | 3970 | mutex_lock(&ap->scsi_scan_mutex); |
3974 | spin_lock_irqsave(ap->lock, flags); | 3971 | spin_lock_irqsave(ap->lock, flags); |
3975 | 3972 | ||
3976 | ata_for_each_link(link, ap, EDGE) { | 3973 | ata_for_each_link(link, ap, EDGE) { |
3977 | ata_for_each_dev(dev, link, ENABLED) { | 3974 | ata_for_each_dev(dev, link, ENABLED) { |
3978 | struct scsi_device *sdev = dev->sdev; | 3975 | struct scsi_device *sdev = dev->sdev; |
3979 | 3976 | ||
3980 | if (!sdev) | 3977 | if (!sdev) |
3981 | continue; | 3978 | continue; |
3982 | if (scsi_device_get(sdev)) | 3979 | if (scsi_device_get(sdev)) |
3983 | continue; | 3980 | continue; |
3984 | 3981 | ||
3985 | spin_unlock_irqrestore(ap->lock, flags); | 3982 | spin_unlock_irqrestore(ap->lock, flags); |
3986 | scsi_rescan_device(&(sdev->sdev_gendev)); | 3983 | scsi_rescan_device(&(sdev->sdev_gendev)); |
3987 | scsi_device_put(sdev); | 3984 | scsi_device_put(sdev); |
3988 | spin_lock_irqsave(ap->lock, flags); | 3985 | spin_lock_irqsave(ap->lock, flags); |
3989 | } | 3986 | } |
3990 | } | 3987 | } |
3991 | 3988 | ||
3992 | spin_unlock_irqrestore(ap->lock, flags); | 3989 | spin_unlock_irqrestore(ap->lock, flags); |
3993 | mutex_unlock(&ap->scsi_scan_mutex); | 3990 | mutex_unlock(&ap->scsi_scan_mutex); |
3994 | } | 3991 | } |
3995 | 3992 | ||
3996 | /** | 3993 | /** |
3997 | * ata_sas_port_alloc - Allocate port for a SAS attached SATA device | 3994 | * ata_sas_port_alloc - Allocate port for a SAS attached SATA device |
3998 | * @host: ATA host container for all SAS ports | 3995 | * @host: ATA host container for all SAS ports |
3999 | * @port_info: Information from low-level host driver | 3996 | * @port_info: Information from low-level host driver |
4000 | * @shost: SCSI host that the scsi device is attached to | 3997 | * @shost: SCSI host that the scsi device is attached to |
4001 | * | 3998 | * |
4002 | * LOCKING: | 3999 | * LOCKING: |
4003 | * PCI/etc. bus probe sem. | 4000 | * PCI/etc. bus probe sem. |
4004 | * | 4001 | * |
4005 | * RETURNS: | 4002 | * RETURNS: |
4006 | * ata_port pointer on success / NULL on failure. | 4003 | * ata_port pointer on success / NULL on failure. |
4007 | */ | 4004 | */ |
4008 | 4005 | ||
4009 | struct ata_port *ata_sas_port_alloc(struct ata_host *host, | 4006 | struct ata_port *ata_sas_port_alloc(struct ata_host *host, |
4010 | struct ata_port_info *port_info, | 4007 | struct ata_port_info *port_info, |
4011 | struct Scsi_Host *shost) | 4008 | struct Scsi_Host *shost) |
4012 | { | 4009 | { |
4013 | struct ata_port *ap; | 4010 | struct ata_port *ap; |
4014 | 4011 | ||
4015 | ap = ata_port_alloc(host); | 4012 | ap = ata_port_alloc(host); |
4016 | if (!ap) | 4013 | if (!ap) |
4017 | return NULL; | 4014 | return NULL; |
4018 | 4015 | ||
4019 | ap->port_no = 0; | 4016 | ap->port_no = 0; |
4020 | ap->lock = &host->lock; | 4017 | ap->lock = &host->lock; |
4021 | ap->pio_mask = port_info->pio_mask; | 4018 | ap->pio_mask = port_info->pio_mask; |
4022 | ap->mwdma_mask = port_info->mwdma_mask; | 4019 | ap->mwdma_mask = port_info->mwdma_mask; |
4023 | ap->udma_mask = port_info->udma_mask; | 4020 | ap->udma_mask = port_info->udma_mask; |
4024 | ap->flags |= port_info->flags; | 4021 | ap->flags |= port_info->flags; |
4025 | ap->ops = port_info->port_ops; | 4022 | ap->ops = port_info->port_ops; |
4026 | ap->cbl = ATA_CBL_SATA; | 4023 | ap->cbl = ATA_CBL_SATA; |
4027 | 4024 | ||
4028 | return ap; | 4025 | return ap; |
4029 | } | 4026 | } |
4030 | EXPORT_SYMBOL_GPL(ata_sas_port_alloc); | 4027 | EXPORT_SYMBOL_GPL(ata_sas_port_alloc); |
4031 | 4028 | ||
4032 | /** | 4029 | /** |
4033 | * ata_sas_port_start - Set port up for dma. | 4030 | * ata_sas_port_start - Set port up for dma. |
4034 | * @ap: Port to initialize | 4031 | * @ap: Port to initialize |
4035 | * | 4032 | * |
4036 | * Called just after data structures for each port are | 4033 | * Called just after data structures for each port are |
4037 | * initialized. | 4034 | * initialized. |
4038 | * | 4035 | * |
4039 | * May be used as the port_start() entry in ata_port_operations. | 4036 | * May be used as the port_start() entry in ata_port_operations. |
4040 | * | 4037 | * |
4041 | * LOCKING: | 4038 | * LOCKING: |
4042 | * Inherited from caller. | 4039 | * Inherited from caller. |
4043 | */ | 4040 | */ |
4044 | int ata_sas_port_start(struct ata_port *ap) | 4041 | int ata_sas_port_start(struct ata_port *ap) |
4045 | { | 4042 | { |
4046 | /* | 4043 | /* |
4047 | * the port is marked as frozen at allocation time, but if we don't | 4044 | * the port is marked as frozen at allocation time, but if we don't |
4048 | * have new eh, we won't thaw it | 4045 | * have new eh, we won't thaw it |
4049 | */ | 4046 | */ |
4050 | if (!ap->ops->error_handler) | 4047 | if (!ap->ops->error_handler) |
4051 | ap->pflags &= ~ATA_PFLAG_FROZEN; | 4048 | ap->pflags &= ~ATA_PFLAG_FROZEN; |
4052 | return 0; | 4049 | return 0; |
4053 | } | 4050 | } |
4054 | EXPORT_SYMBOL_GPL(ata_sas_port_start); | 4051 | EXPORT_SYMBOL_GPL(ata_sas_port_start); |
4055 | 4052 | ||
4056 | /** | 4053 | /** |
4057 | * ata_port_stop - Undo ata_sas_port_start() | 4054 | * ata_port_stop - Undo ata_sas_port_start() |
4058 | * @ap: Port to shut down | 4055 | * @ap: Port to shut down |
4059 | * | 4056 | * |
4060 | * May be used as the port_stop() entry in ata_port_operations. | 4057 | * May be used as the port_stop() entry in ata_port_operations. |
4061 | * | 4058 | * |
4062 | * LOCKING: | 4059 | * LOCKING: |
4063 | * Inherited from caller. | 4060 | * Inherited from caller. |
4064 | */ | 4061 | */ |
4065 | 4062 | ||
4066 | void ata_sas_port_stop(struct ata_port *ap) | 4063 | void ata_sas_port_stop(struct ata_port *ap) |
4067 | { | 4064 | { |
4068 | } | 4065 | } |
4069 | EXPORT_SYMBOL_GPL(ata_sas_port_stop); | 4066 | EXPORT_SYMBOL_GPL(ata_sas_port_stop); |
4070 | 4067 | ||
4071 | /** | 4068 | /** |
4072 | * ata_sas_async_probe - simply schedule probing and return | 4069 | * ata_sas_async_probe - simply schedule probing and return |
4073 | * @ap: Port to probe | 4070 | * @ap: Port to probe |
4074 | * | 4071 | * |
4075 | * For batch scheduling of probe for sas attached ata devices, assumes | 4072 | * For batch scheduling of probe for sas attached ata devices, assumes |
4076 | * the port has already been through ata_sas_port_init() | 4073 | * the port has already been through ata_sas_port_init() |
4077 | */ | 4074 | */ |
4078 | void ata_sas_async_probe(struct ata_port *ap) | 4075 | void ata_sas_async_probe(struct ata_port *ap) |
4079 | { | 4076 | { |
4080 | __ata_port_probe(ap); | 4077 | __ata_port_probe(ap); |
4081 | } | 4078 | } |
4082 | EXPORT_SYMBOL_GPL(ata_sas_async_probe); | 4079 | EXPORT_SYMBOL_GPL(ata_sas_async_probe); |
4083 | 4080 | ||
4084 | int ata_sas_sync_probe(struct ata_port *ap) | 4081 | int ata_sas_sync_probe(struct ata_port *ap) |
4085 | { | 4082 | { |
4086 | return ata_port_probe(ap); | 4083 | return ata_port_probe(ap); |
4087 | } | 4084 | } |
4088 | EXPORT_SYMBOL_GPL(ata_sas_sync_probe); | 4085 | EXPORT_SYMBOL_GPL(ata_sas_sync_probe); |
4089 | 4086 | ||
4090 | 4087 | ||
4091 | /** | 4088 | /** |
4092 | * ata_sas_port_init - Initialize a SATA device | 4089 | * ata_sas_port_init - Initialize a SATA device |
4093 | * @ap: SATA port to initialize | 4090 | * @ap: SATA port to initialize |
4094 | * | 4091 | * |
4095 | * LOCKING: | 4092 | * LOCKING: |
4096 | * PCI/etc. bus probe sem. | 4093 | * PCI/etc. bus probe sem. |
4097 | * | 4094 | * |
4098 | * RETURNS: | 4095 | * RETURNS: |
4099 | * Zero on success, non-zero on error. | 4096 | * Zero on success, non-zero on error. |
4100 | */ | 4097 | */ |
4101 | 4098 | ||
4102 | int ata_sas_port_init(struct ata_port *ap) | 4099 | int ata_sas_port_init(struct ata_port *ap) |
4103 | { | 4100 | { |
4104 | int rc = ap->ops->port_start(ap); | 4101 | int rc = ap->ops->port_start(ap); |
4105 | 4102 | ||
4106 | if (rc) | 4103 | if (rc) |
4107 | return rc; | 4104 | return rc; |
4108 | ap->print_id = atomic_inc_return(&ata_print_id); | 4105 | ap->print_id = atomic_inc_return(&ata_print_id); |
4109 | return 0; | 4106 | return 0; |
4110 | } | 4107 | } |
4111 | EXPORT_SYMBOL_GPL(ata_sas_port_init); | 4108 | EXPORT_SYMBOL_GPL(ata_sas_port_init); |
4112 | 4109 | ||
4113 | /** | 4110 | /** |
4114 | * ata_sas_port_destroy - Destroy a SATA port allocated by ata_sas_port_alloc | 4111 | * ata_sas_port_destroy - Destroy a SATA port allocated by ata_sas_port_alloc |
4115 | * @ap: SATA port to destroy | 4112 | * @ap: SATA port to destroy |
4116 | * | 4113 | * |
4117 | */ | 4114 | */ |
4118 | 4115 | ||
4119 | void ata_sas_port_destroy(struct ata_port *ap) | 4116 | void ata_sas_port_destroy(struct ata_port *ap) |
4120 | { | 4117 | { |
4121 | if (ap->ops->port_stop) | 4118 | if (ap->ops->port_stop) |
4122 | ap->ops->port_stop(ap); | 4119 | ap->ops->port_stop(ap); |
4123 | kfree(ap); | 4120 | kfree(ap); |
4124 | } | 4121 | } |
4125 | EXPORT_SYMBOL_GPL(ata_sas_port_destroy); | 4122 | EXPORT_SYMBOL_GPL(ata_sas_port_destroy); |
4126 | 4123 | ||
4127 | /** | 4124 | /** |
4128 | * ata_sas_slave_configure - Default slave_config routine for libata devices | 4125 | * ata_sas_slave_configure - Default slave_config routine for libata devices |
4129 | * @sdev: SCSI device to configure | 4126 | * @sdev: SCSI device to configure |
4130 | * @ap: ATA port to which SCSI device is attached | 4127 | * @ap: ATA port to which SCSI device is attached |
4131 | * | 4128 | * |
4132 | * RETURNS: | 4129 | * RETURNS: |
4133 | * Zero. | 4130 | * Zero. |
4134 | */ | 4131 | */ |
4135 | 4132 | ||
4136 | int ata_sas_slave_configure(struct scsi_device *sdev, struct ata_port *ap) | 4133 | int ata_sas_slave_configure(struct scsi_device *sdev, struct ata_port *ap) |
4137 | { | 4134 | { |
4138 | ata_scsi_sdev_config(sdev); | 4135 | ata_scsi_sdev_config(sdev); |
4139 | ata_scsi_dev_config(sdev, ap->link.device); | 4136 | ata_scsi_dev_config(sdev, ap->link.device); |
4140 | return 0; | 4137 | return 0; |
4141 | } | 4138 | } |
4142 | EXPORT_SYMBOL_GPL(ata_sas_slave_configure); | 4139 | EXPORT_SYMBOL_GPL(ata_sas_slave_configure); |
4143 | 4140 | ||
4144 | /** | 4141 | /** |
4145 | * ata_sas_queuecmd - Issue SCSI cdb to libata-managed device | 4142 | * ata_sas_queuecmd - Issue SCSI cdb to libata-managed device |
4146 | * @cmd: SCSI command to be sent | 4143 | * @cmd: SCSI command to be sent |
4147 | * @ap: ATA port to which the command is being sent | 4144 | * @ap: ATA port to which the command is being sent |
4148 | * | 4145 | * |
4149 | * RETURNS: | 4146 | * RETURNS: |
4150 | * Return value from __ata_scsi_queuecmd() if @cmd can be queued, | 4147 | * Return value from __ata_scsi_queuecmd() if @cmd can be queued, |
4151 | * 0 otherwise. | 4148 | * 0 otherwise. |
4152 | */ | 4149 | */ |
4153 | 4150 | ||
4154 | int ata_sas_queuecmd(struct scsi_cmnd *cmd, struct ata_port *ap) | 4151 | int ata_sas_queuecmd(struct scsi_cmnd *cmd, struct ata_port *ap) |
4155 | { | 4152 | { |
4156 | int rc = 0; | 4153 | int rc = 0; |
4157 | 4154 | ||
4158 | ata_scsi_dump_cdb(ap, cmd); | 4155 | ata_scsi_dump_cdb(ap, cmd); |
4159 | 4156 | ||
4160 | if (likely(ata_dev_enabled(ap->link.device))) | 4157 | if (likely(ata_dev_enabled(ap->link.device))) |
4161 | rc = __ata_scsi_queuecmd(cmd, ap->link.device); | 4158 | rc = __ata_scsi_queuecmd(cmd, ap->link.device); |
4162 | else { | 4159 | else { |
4163 | cmd->result = (DID_BAD_TARGET << 16); | 4160 | cmd->result = (DID_BAD_TARGET << 16); |