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drivers/block/skd_main.c
93.2 KB
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// SPDX-License-Identifier: GPL-2.0-only |
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/* * Driver for sTec s1120 PCIe SSDs. sTec was acquired in 2013 by HGST and HGST * was acquired by Western Digital in 2012. |
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* Copyright 2012 sTec, Inc. * Copyright (c) 2017 Western Digital Corporation or its affiliates. |
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*/ #include <linux/kernel.h> #include <linux/module.h> #include <linux/init.h> #include <linux/pci.h> #include <linux/slab.h> #include <linux/spinlock.h> #include <linux/blkdev.h> |
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#include <linux/blk-mq.h> |
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#include <linux/sched.h> #include <linux/interrupt.h> #include <linux/compiler.h> #include <linux/workqueue.h> |
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#include <linux/delay.h> #include <linux/time.h> #include <linux/hdreg.h> #include <linux/dma-mapping.h> #include <linux/completion.h> #include <linux/scatterlist.h> |
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#include <linux/err.h> |
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#include <linux/aer.h> |
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#include <linux/wait.h> |
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#include <linux/stringify.h> |
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#include <scsi/scsi.h> |
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#include <scsi/sg.h> #include <linux/io.h> #include <linux/uaccess.h> |
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#include <asm/unaligned.h> |
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#include "skd_s1120.h" static int skd_dbg_level; static int skd_isr_comp_limit = 4; |
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#define SKD_ASSERT(expr) \ do { \ if (unlikely(!(expr))) { \ pr_err("Assertion failed! %s,%s,%s,line=%d ", \ # expr, __FILE__, __func__, __LINE__); \ } \ } while (0) |
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#define DRV_NAME "skd" |
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#define PFX DRV_NAME ": " |
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MODULE_LICENSE("GPL"); |
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MODULE_DESCRIPTION("STEC s1120 PCIe SSD block driver"); |
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#define PCI_VENDOR_ID_STEC 0x1B39 #define PCI_DEVICE_ID_S1120 0x0001 #define SKD_FUA_NV (1 << 1) #define SKD_MINORS_PER_DEVICE 16 #define SKD_MAX_QUEUE_DEPTH 200u #define SKD_PAUSE_TIMEOUT (5 * 1000) #define SKD_N_FITMSG_BYTES (512u) |
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#define SKD_MAX_REQ_PER_MSG 14 |
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#define SKD_N_SPECIAL_FITMSG_BYTES (128u) /* SG elements are 32 bytes, so we can make this 4096 and still be under the * 128KB limit. That allows 4096*4K = 16M xfer size */ #define SKD_N_SG_PER_REQ_DEFAULT 256u |
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#define SKD_N_COMPLETION_ENTRY 256u #define SKD_N_READ_CAP_BYTES (8u) #define SKD_N_INTERNAL_BYTES (512u) |
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#define SKD_SKCOMP_SIZE \ ((sizeof(struct fit_completion_entry_v1) + \ sizeof(struct fit_comp_error_info)) * SKD_N_COMPLETION_ENTRY) |
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/* 5 bits of uniqifier, 0xF800 */ |
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#define SKD_ID_TABLE_MASK (3u << 8u) #define SKD_ID_RW_REQUEST (0u << 8u) #define SKD_ID_INTERNAL (1u << 8u) |
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#define SKD_ID_FIT_MSG (3u << 8u) #define SKD_ID_SLOT_MASK 0x00FFu #define SKD_ID_SLOT_AND_TABLE_MASK 0x03FFu |
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#define SKD_N_MAX_SECTORS 2048u #define SKD_MAX_RETRIES 2u #define SKD_TIMER_SECONDS(seconds) (seconds) #define SKD_TIMER_MINUTES(minutes) ((minutes) * (60)) #define INQ_STD_NBYTES 36 |
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enum skd_drvr_state { SKD_DRVR_STATE_LOAD, SKD_DRVR_STATE_IDLE, SKD_DRVR_STATE_BUSY, SKD_DRVR_STATE_STARTING, SKD_DRVR_STATE_ONLINE, SKD_DRVR_STATE_PAUSING, SKD_DRVR_STATE_PAUSED, |
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SKD_DRVR_STATE_RESTARTING, SKD_DRVR_STATE_RESUMING, SKD_DRVR_STATE_STOPPING, SKD_DRVR_STATE_FAULT, SKD_DRVR_STATE_DISAPPEARED, SKD_DRVR_STATE_PROTOCOL_MISMATCH, SKD_DRVR_STATE_BUSY_ERASE, SKD_DRVR_STATE_BUSY_SANITIZE, SKD_DRVR_STATE_BUSY_IMMINENT, SKD_DRVR_STATE_WAIT_BOOT, SKD_DRVR_STATE_SYNCING, }; #define SKD_WAIT_BOOT_TIMO SKD_TIMER_SECONDS(90u) #define SKD_STARTING_TIMO SKD_TIMER_SECONDS(8u) #define SKD_RESTARTING_TIMO SKD_TIMER_MINUTES(4u) |
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#define SKD_BUSY_TIMO SKD_TIMER_MINUTES(20u) #define SKD_STARTED_BUSY_TIMO SKD_TIMER_SECONDS(60u) #define SKD_START_WAIT_SECONDS 90u enum skd_req_state { SKD_REQ_STATE_IDLE, SKD_REQ_STATE_SETUP, SKD_REQ_STATE_BUSY, SKD_REQ_STATE_COMPLETED, SKD_REQ_STATE_TIMEOUT, |
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}; |
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enum skd_check_status_action { SKD_CHECK_STATUS_REPORT_GOOD, SKD_CHECK_STATUS_REPORT_SMART_ALERT, SKD_CHECK_STATUS_REQUEUE_REQUEST, SKD_CHECK_STATUS_REPORT_ERROR, SKD_CHECK_STATUS_BUSY_IMMINENT, }; |
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struct skd_msg_buf { struct fit_msg_hdr fmh; struct skd_scsi_request scsi[SKD_MAX_REQ_PER_MSG]; }; |
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struct skd_fitmsg_context { |
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u32 id; |
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u32 length; |
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struct skd_msg_buf *msg_buf; |
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dma_addr_t mb_dma_address; }; struct skd_request_context { enum skd_req_state state; |
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u16 id; u32 fitmsg_id; |
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u8 flush_cmd; |
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enum dma_data_direction data_dir; |
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struct scatterlist *sg; u32 n_sg; u32 sg_byte_count; struct fit_sg_descriptor *sksg_list; dma_addr_t sksg_dma_address; struct fit_completion_entry_v1 completion; struct fit_comp_error_info err_info; |
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int retries; |
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blk_status_t status; |
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}; |
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struct skd_special_context { struct skd_request_context req; |
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void *data_buf; dma_addr_t db_dma_address; |
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struct skd_msg_buf *msg_buf; |
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dma_addr_t mb_dma_address; }; |
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typedef enum skd_irq_type { SKD_IRQ_LEGACY, SKD_IRQ_MSI, SKD_IRQ_MSIX } skd_irq_type_t; #define SKD_MAX_BARS 2 struct skd_device { |
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void __iomem *mem_map[SKD_MAX_BARS]; |
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resource_size_t mem_phys[SKD_MAX_BARS]; u32 mem_size[SKD_MAX_BARS]; |
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struct skd_msix_entry *msix_entries; struct pci_dev *pdev; int pcie_error_reporting_is_enabled; spinlock_t lock; struct gendisk *disk; |
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struct blk_mq_tag_set tag_set; |
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struct request_queue *queue; |
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struct skd_fitmsg_context *skmsg; |
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struct device *class_dev; int gendisk_on; int sync_done; |
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u32 devno; u32 major; |
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char isr_name[30]; enum skd_drvr_state state; u32 drive_state; |
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u32 cur_max_queue_depth; u32 queue_low_water_mark; u32 dev_max_queue_depth; u32 num_fitmsg_context; u32 num_req_context; |
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struct skd_fitmsg_context *skmsg_table; |
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struct skd_special_context internal_skspcl; u32 read_cap_blocksize; u32 read_cap_last_lba; int read_cap_is_valid; int inquiry_is_valid; u8 inq_serial_num[13]; /*12 chars plus null term */ |
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u8 skcomp_cycle; u32 skcomp_ix; |
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struct kmem_cache *msgbuf_cache; struct kmem_cache *sglist_cache; struct kmem_cache *databuf_cache; |
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struct fit_completion_entry_v1 *skcomp_table; struct fit_comp_error_info *skerr_table; dma_addr_t cq_dma_address; wait_queue_head_t waitq; struct timer_list timer; u32 timer_countdown; u32 timer_substate; |
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int sgs_per_request; u32 last_mtd; u32 proto_ver; int dbg_level; u32 connect_time_stamp; int connect_retries; #define SKD_MAX_CONNECT_RETRIES 16 u32 drive_jiffies; u32 timo_slot; |
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struct work_struct start_queue; |
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struct work_struct completion_worker; |
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}; #define SKD_WRITEL(DEV, VAL, OFF) skd_reg_write32(DEV, VAL, OFF) #define SKD_READL(DEV, OFF) skd_reg_read32(DEV, OFF) #define SKD_WRITEQ(DEV, VAL, OFF) skd_reg_write64(DEV, VAL, OFF) static inline u32 skd_reg_read32(struct skd_device *skdev, u32 offset) { |
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u32 val = readl(skdev->mem_map[1] + offset); |
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if (unlikely(skdev->dbg_level >= 2)) |
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dev_dbg(&skdev->pdev->dev, "offset %x = %x ", offset, val); |
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return val; |
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} static inline void skd_reg_write32(struct skd_device *skdev, u32 val, u32 offset) { |
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writel(val, skdev->mem_map[1] + offset); if (unlikely(skdev->dbg_level >= 2)) |
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dev_dbg(&skdev->pdev->dev, "offset %x = %x ", offset, val); |
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} static inline void skd_reg_write64(struct skd_device *skdev, u64 val, u32 offset) { |
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writeq(val, skdev->mem_map[1] + offset); if (unlikely(skdev->dbg_level >= 2)) |
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dev_dbg(&skdev->pdev->dev, "offset %x = %016llx ", offset, val); |
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} |
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#define SKD_IRQ_DEFAULT SKD_IRQ_MSIX |
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static int skd_isr_type = SKD_IRQ_DEFAULT; module_param(skd_isr_type, int, 0444); MODULE_PARM_DESC(skd_isr_type, "Interrupt type capability." " (0==legacy, 1==MSI, 2==MSI-X, default==1)"); #define SKD_MAX_REQ_PER_MSG_DEFAULT 1 static int skd_max_req_per_msg = SKD_MAX_REQ_PER_MSG_DEFAULT; module_param(skd_max_req_per_msg, int, 0444); MODULE_PARM_DESC(skd_max_req_per_msg, "Maximum SCSI requests packed in a single message." |
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" (1-" __stringify(SKD_MAX_REQ_PER_MSG) ", default==1)"); |
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#define SKD_MAX_QUEUE_DEPTH_DEFAULT 64 #define SKD_MAX_QUEUE_DEPTH_DEFAULT_STR "64" static int skd_max_queue_depth = SKD_MAX_QUEUE_DEPTH_DEFAULT; module_param(skd_max_queue_depth, int, 0444); MODULE_PARM_DESC(skd_max_queue_depth, "Maximum SCSI requests issued to s1120." " (1-200, default==" SKD_MAX_QUEUE_DEPTH_DEFAULT_STR ")"); static int skd_sgs_per_request = SKD_N_SG_PER_REQ_DEFAULT; module_param(skd_sgs_per_request, int, 0444); MODULE_PARM_DESC(skd_sgs_per_request, "Maximum SG elements per block request." " (1-4096, default==256)"); |
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static int skd_max_pass_thru = 1; |
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module_param(skd_max_pass_thru, int, 0444); MODULE_PARM_DESC(skd_max_pass_thru, |
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"Maximum SCSI pass-thru at a time. IGNORED"); |
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module_param(skd_dbg_level, int, 0444); MODULE_PARM_DESC(skd_dbg_level, "s1120 debug level (0,1,2)"); module_param(skd_isr_comp_limit, int, 0444); MODULE_PARM_DESC(skd_isr_comp_limit, "s1120 isr comp limit (0=none) default=4"); |
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/* Major device number dynamically assigned. */ static u32 skd_major; |
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static void skd_destruct(struct skd_device *skdev); static const struct block_device_operations skd_blockdev_ops; static void skd_send_fitmsg(struct skd_device *skdev, struct skd_fitmsg_context *skmsg); static void skd_send_special_fitmsg(struct skd_device *skdev, struct skd_special_context *skspcl); |
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static bool skd_preop_sg_list(struct skd_device *skdev, |
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struct skd_request_context *skreq); static void skd_postop_sg_list(struct skd_device *skdev, struct skd_request_context *skreq); static void skd_restart_device(struct skd_device *skdev); static int skd_quiesce_dev(struct skd_device *skdev); static int skd_unquiesce_dev(struct skd_device *skdev); |
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static void skd_disable_interrupts(struct skd_device *skdev); static void skd_isr_fwstate(struct skd_device *skdev); |
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static void skd_recover_requests(struct skd_device *skdev); |
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static void skd_soft_reset(struct skd_device *skdev); |
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const char *skd_drive_state_to_str(int state); const char *skd_skdev_state_to_str(enum skd_drvr_state state); static void skd_log_skdev(struct skd_device *skdev, const char *event); |
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static void skd_log_skreq(struct skd_device *skdev, struct skd_request_context *skreq, const char *event); |
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/* ***************************************************************************** * READ/WRITE REQUESTS ***************************************************************************** */ |
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static bool skd_inc_in_flight(struct request *rq, void *data, bool reserved) |
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{ int *count = data; count++; |
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return true; |
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} static int skd_in_flight(struct skd_device *skdev) { int count = 0; blk_mq_tagset_busy_iter(&skdev->tag_set, skd_inc_in_flight, &count); return count; } |
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static void skd_prep_rw_cdb(struct skd_scsi_request *scsi_req, int data_dir, unsigned lba, unsigned count) { if (data_dir == READ) |
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scsi_req->cdb[0] = READ_10; |
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else |
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scsi_req->cdb[0] = WRITE_10; |
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scsi_req->cdb[1] = 0; scsi_req->cdb[2] = (lba & 0xff000000) >> 24; scsi_req->cdb[3] = (lba & 0xff0000) >> 16; scsi_req->cdb[4] = (lba & 0xff00) >> 8; scsi_req->cdb[5] = (lba & 0xff); scsi_req->cdb[6] = 0; scsi_req->cdb[7] = (count & 0xff00) >> 8; scsi_req->cdb[8] = count & 0xff; scsi_req->cdb[9] = 0; } static void skd_prep_zerosize_flush_cdb(struct skd_scsi_request *scsi_req, |
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struct skd_request_context *skreq) |
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{ skreq->flush_cmd = 1; |
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scsi_req->cdb[0] = SYNCHRONIZE_CACHE; |
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scsi_req->cdb[1] = 0; scsi_req->cdb[2] = 0; scsi_req->cdb[3] = 0; scsi_req->cdb[4] = 0; scsi_req->cdb[5] = 0; scsi_req->cdb[6] = 0; scsi_req->cdb[7] = 0; scsi_req->cdb[8] = 0; scsi_req->cdb[9] = 0; } |
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/* * Return true if and only if all pending requests should be failed. */ static bool skd_fail_all(struct request_queue *q) |
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{ struct skd_device *skdev = q->queuedata; SKD_ASSERT(skdev->state != SKD_DRVR_STATE_ONLINE); skd_log_skdev(skdev, "req_not_online"); switch (skdev->state) { case SKD_DRVR_STATE_PAUSING: case SKD_DRVR_STATE_PAUSED: case SKD_DRVR_STATE_STARTING: case SKD_DRVR_STATE_RESTARTING: case SKD_DRVR_STATE_WAIT_BOOT: /* In case of starting, we haven't started the queue, * so we can't get here... but requests are * possibly hanging out waiting for us because we * reported the dev/skd0 already. They'll wait * forever if connect doesn't complete. * What to do??? delay dev/skd0 ?? */ case SKD_DRVR_STATE_BUSY: case SKD_DRVR_STATE_BUSY_IMMINENT: case SKD_DRVR_STATE_BUSY_ERASE: |
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return false; |
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case SKD_DRVR_STATE_BUSY_SANITIZE: case SKD_DRVR_STATE_STOPPING: case SKD_DRVR_STATE_SYNCING: case SKD_DRVR_STATE_FAULT: case SKD_DRVR_STATE_DISAPPEARED: default: |
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return true; |
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} |
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} |
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static blk_status_t skd_mq_queue_rq(struct blk_mq_hw_ctx *hctx, const struct blk_mq_queue_data *mqd) |
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{ |
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struct request *const req = mqd->rq; |
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struct request_queue *const q = req->q; |
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struct skd_device *skdev = q->queuedata; |
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struct skd_fitmsg_context *skmsg; struct fit_msg_hdr *fmh; const u32 tag = blk_mq_unique_tag(req); |
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struct skd_request_context *const skreq = blk_mq_rq_to_pdu(req); |
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struct skd_scsi_request *scsi_req; |
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unsigned long flags = 0; |
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const u32 lba = blk_rq_pos(req); const u32 count = blk_rq_sectors(req); const int data_dir = rq_data_dir(req); |
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if (unlikely(skdev->state != SKD_DRVR_STATE_ONLINE)) return skd_fail_all(q) ? BLK_STS_IOERR : BLK_STS_RESOURCE; |
1bee42438 skd_main: don't u... |
469 470 471 472 |
if (!(req->rq_flags & RQF_DONTPREP)) { skreq->retries = 0; req->rq_flags |= RQF_DONTPREP; } |
c39c6c773 skd: Inline skd_p... |
473 |
blk_mq_start_request(req); |
91f85da4e skd: Introduce sk... |
474 475 476 477 478 |
WARN_ONCE(tag >= skd_max_queue_depth, "%#x > %#x (nr_requests = %lu) ", tag, skd_max_queue_depth, q->nr_requests); SKD_ASSERT(skreq->state == SKD_REQ_STATE_IDLE); |
91f85da4e skd: Introduce sk... |
479 480 481 482 483 484 485 486 487 |
dev_dbg(&skdev->pdev->dev, "new req=%p lba=%u(0x%x) count=%u(0x%x) dir=%d ", req, lba, lba, count, count, data_dir); skreq->id = tag + SKD_ID_RW_REQUEST; skreq->flush_cmd = 0; skreq->n_sg = 0; skreq->sg_byte_count = 0; |
91f85da4e skd: Introduce sk... |
488 489 490 491 492 493 494 |
skreq->fitmsg_id = 0; skreq->data_dir = data_dir == READ ? DMA_FROM_DEVICE : DMA_TO_DEVICE; if (req->bio && !skd_preop_sg_list(skdev, skreq)) { dev_dbg(&skdev->pdev->dev, "error Out "); |
795bc1b54 skd: Inline skd_e... |
495 496 |
skreq->status = BLK_STS_RESOURCE; blk_mq_complete_request(req); |
c39c6c773 skd: Inline skd_p... |
497 |
return BLK_STS_OK; |
91f85da4e skd: Introduce sk... |
498 |
} |
a3db102de skd: Reduce memor... |
499 500 501 502 |
dma_sync_single_for_device(&skdev->pdev->dev, skreq->sksg_dma_address, skreq->n_sg * sizeof(struct fit_sg_descriptor), DMA_TO_DEVICE); |
91f85da4e skd: Introduce sk... |
503 |
/* Either a FIT msg is in progress or we have to start one. */ |
74c74282c skd: Optimize loc... |
504 505 506 507 508 509 |
if (skd_max_req_per_msg == 1) { skmsg = NULL; } else { spin_lock_irqsave(&skdev->lock, flags); skmsg = skdev->skmsg; } |
91f85da4e skd: Introduce sk... |
510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 |
if (!skmsg) { skmsg = &skdev->skmsg_table[tag]; skdev->skmsg = skmsg; /* Initialize the FIT msg header */ fmh = &skmsg->msg_buf->fmh; memset(fmh, 0, sizeof(*fmh)); fmh->protocol_id = FIT_PROTOCOL_ID_SOFIT; skmsg->length = sizeof(*fmh); } else { fmh = &skmsg->msg_buf->fmh; } skreq->fitmsg_id = skmsg->id; scsi_req = &skmsg->msg_buf->scsi[fmh->num_protocol_cmds_coalesced]; memset(scsi_req, 0, sizeof(*scsi_req)); |
91f85da4e skd: Introduce sk... |
527 |
scsi_req->hdr.tag = skreq->id; |
e2bb55482 skd: Remove sever... |
528 529 |
scsi_req->hdr.sg_list_dma_address = cpu_to_be64(skreq->sksg_dma_address); |
91f85da4e skd: Introduce sk... |
530 |
|
e2bb55482 skd: Remove sever... |
531 |
if (req_op(req) == REQ_OP_FLUSH) { |
91f85da4e skd: Introduce sk... |
532 533 534 535 536 |
skd_prep_zerosize_flush_cdb(scsi_req, skreq); SKD_ASSERT(skreq->flush_cmd == 1); } else { skd_prep_rw_cdb(scsi_req, data_dir, lba, count); } |
e2bb55482 skd: Remove sever... |
537 |
if (req->cmd_flags & REQ_FUA) |
91f85da4e skd: Introduce sk... |
538 539 540 541 542 543 544 545 546 |
scsi_req->cdb[1] |= SKD_FUA_NV; scsi_req->hdr.sg_list_len_bytes = cpu_to_be32(skreq->sg_byte_count); /* Complete resource allocations. */ skreq->state = SKD_REQ_STATE_BUSY; skmsg->length += sizeof(struct skd_scsi_request); fmh->num_protocol_cmds_coalesced++; |
91f85da4e skd: Introduce sk... |
547 548 |
dev_dbg(&skdev->pdev->dev, "req=0x%x busy=%d ", skreq->id, |
d4d0f5fc3 skd: Remove skd_d... |
549 |
skd_in_flight(skdev)); |
91f85da4e skd: Introduce sk... |
550 551 552 553 |
/* * If the FIT msg buffer is full send it. */ |
74c74282c skd: Optimize loc... |
554 |
if (skd_max_req_per_msg == 1) { |
91f85da4e skd: Introduce sk... |
555 |
skd_send_fitmsg(skdev, skmsg); |
74c74282c skd: Optimize loc... |
556 |
} else { |
c39c6c773 skd: Inline skd_p... |
557 |
if (mqd->last || |
74c74282c skd: Optimize loc... |
558 559 560 561 562 |
fmh->num_protocol_cmds_coalesced >= skd_max_req_per_msg) { skd_send_fitmsg(skdev, skmsg); skdev->skmsg = NULL; } spin_unlock_irqrestore(&skdev->lock, flags); |
91f85da4e skd: Introduce sk... |
563 |
} |
e67f86b31 Add support for s... |
564 |
|
ca33dd929 skd: Convert to b... |
565 |
return BLK_STS_OK; |
e67f86b31 Add support for s... |
566 |
} |
f2fe44598 skd: Avoid double... |
567 568 |
static enum blk_eh_timer_return skd_timed_out(struct request *req, bool reserved) |
a74d5b76f skd: Switch to bl... |
569 570 571 572 573 574 |
{ struct skd_device *skdev = req->q->queuedata; dev_err(&skdev->pdev->dev, "request with tag %#x timed out ", blk_mq_unique_tag(req)); |
f2fe44598 skd: Avoid double... |
575 |
return BLK_EH_RESET_TIMER; |
a74d5b76f skd: Switch to bl... |
576 |
} |
296cb94c9 skd: Rename skd_s... |
577 |
static void skd_complete_rq(struct request *req) |
a74d5b76f skd: Switch to bl... |
578 |
{ |
a74d5b76f skd: Switch to bl... |
579 |
struct skd_request_context *skreq = blk_mq_rq_to_pdu(req); |
a74d5b76f skd: Switch to bl... |
580 |
|
f2fe44598 skd: Avoid double... |
581 |
blk_mq_end_request(req, skreq->status); |
a74d5b76f skd: Switch to bl... |
582 |
} |
2a842acab block: introduce ... |
583 |
static bool skd_preop_sg_list(struct skd_device *skdev, |
38d4a1bb9 skd: more removal... |
584 |
struct skd_request_context *skreq) |
e67f86b31 Add support for s... |
585 |
{ |
e7278a8b3 skd: Coalesce str... |
586 |
struct request *req = blk_mq_rq_from_pdu(skreq); |
06f824c40 skd: Use for_each... |
587 |
struct scatterlist *sgl = &skreq->sg[0], *sg; |
e67f86b31 Add support for s... |
588 589 590 591 |
int n_sg; int i; skreq->sg_byte_count = 0; |
b1824eef2 skd: Simplify the... |
592 593 |
WARN_ON_ONCE(skreq->data_dir != DMA_TO_DEVICE && skreq->data_dir != DMA_FROM_DEVICE); |
e67f86b31 Add support for s... |
594 |
|
06f824c40 skd: Use for_each... |
595 |
n_sg = blk_rq_map_sg(skdev->queue, req, sgl); |
e67f86b31 Add support for s... |
596 |
if (n_sg <= 0) |
2a842acab block: introduce ... |
597 |
return false; |
e67f86b31 Add support for s... |
598 599 600 601 602 |
/* * Map scatterlist to PCI bus addresses. * Note PCI might change the number of entries. */ |
138126214 skd: switch to th... |
603 |
n_sg = dma_map_sg(&skdev->pdev->dev, sgl, n_sg, skreq->data_dir); |
e67f86b31 Add support for s... |
604 |
if (n_sg <= 0) |
2a842acab block: introduce ... |
605 |
return false; |
e67f86b31 Add support for s... |
606 607 608 609 |
SKD_ASSERT(n_sg <= skdev->sgs_per_request); skreq->n_sg = n_sg; |
06f824c40 skd: Use for_each... |
610 |
for_each_sg(sgl, sg, n_sg, i) { |
e67f86b31 Add support for s... |
611 |
struct fit_sg_descriptor *sgd = &skreq->sksg_list[i]; |
06f824c40 skd: Use for_each... |
612 613 |
u32 cnt = sg_dma_len(sg); uint64_t dma_addr = sg_dma_address(sg); |
e67f86b31 Add support for s... |
614 615 616 617 618 619 620 621 622 623 624 625 |
sgd->control = FIT_SGD_CONTROL_NOT_LAST; sgd->byte_count = cnt; skreq->sg_byte_count += cnt; sgd->host_side_addr = dma_addr; sgd->dev_side_addr = 0; } skreq->sksg_list[n_sg - 1].next_desc_ptr = 0LL; skreq->sksg_list[n_sg - 1].control = FIT_SGD_CONTROL_LAST; if (unlikely(skdev->dbg_level > 1)) { |
f98806d61 skd: Switch from ... |
626 |
dev_dbg(&skdev->pdev->dev, |
ea870bb2a block: skd: Use %... |
627 628 629 |
"skreq=%x sksg_list=%p sksg_dma=%pad ", skreq->id, skreq->sksg_list, &skreq->sksg_dma_address); |
e67f86b31 Add support for s... |
630 631 |
for (i = 0; i < n_sg; i++) { struct fit_sg_descriptor *sgd = &skreq->sksg_list[i]; |
f98806d61 skd: Switch from ... |
632 633 634 635 636 637 |
dev_dbg(&skdev->pdev->dev, " sg[%d] count=%u ctrl=0x%x addr=0x%llx next=0x%llx ", i, sgd->byte_count, sgd->control, sgd->host_side_addr, sgd->next_desc_ptr); |
e67f86b31 Add support for s... |
638 639 |
} } |
2a842acab block: introduce ... |
640 |
return true; |
e67f86b31 Add support for s... |
641 |
} |
fcd37eb3c skd: rip out bio ... |
642 |
static void skd_postop_sg_list(struct skd_device *skdev, |
38d4a1bb9 skd: more removal... |
643 |
struct skd_request_context *skreq) |
e67f86b31 Add support for s... |
644 |
{ |
e67f86b31 Add support for s... |
645 646 647 648 649 650 651 |
/* * restore the next ptr for next IO request so we * don't have to set it every time. */ skreq->sksg_list[skreq->n_sg - 1].next_desc_ptr = skreq->sksg_dma_address + ((skreq->n_sg) * sizeof(struct fit_sg_descriptor)); |
138126214 skd: switch to th... |
652 653 |
dma_unmap_sg(&skdev->pdev->dev, &skreq->sg[0], skreq->n_sg, skreq->data_dir); |
e67f86b31 Add support for s... |
654 |
} |
e67f86b31 Add support for s... |
655 656 657 658 659 660 661 |
/* ***************************************************************************** * TIMER ***************************************************************************** */ static void skd_timer_tick_not_online(struct skd_device *skdev); |
ca33dd929 skd: Convert to b... |
662 663 664 665 666 667 668 669 670 671 672 673 |
static void skd_start_queue(struct work_struct *work) { struct skd_device *skdev = container_of(work, typeof(*skdev), start_queue); /* * Although it is safe to call blk_start_queue() from interrupt * context, blk_mq_start_hw_queues() must not be called from * interrupt context. */ blk_mq_start_hw_queues(skdev->queue); } |
e99e88a9d treewide: setup_t... |
674 |
static void skd_timer_tick(struct timer_list *t) |
e67f86b31 Add support for s... |
675 |
{ |
e99e88a9d treewide: setup_t... |
676 |
struct skd_device *skdev = from_timer(skdev, t, timer); |
e67f86b31 Add support for s... |
677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 |
unsigned long reqflags; u32 state; if (skdev->state == SKD_DRVR_STATE_FAULT) /* The driver has declared fault, and we want it to * stay that way until driver is reloaded. */ return; spin_lock_irqsave(&skdev->lock, reqflags); state = SKD_READL(skdev, FIT_STATUS); state &= FIT_SR_DRIVE_STATE_MASK; if (state != skdev->drive_state) skd_isr_fwstate(skdev); |
a74d5b76f skd: Switch to bl... |
692 |
if (skdev->state != SKD_DRVR_STATE_ONLINE) |
e67f86b31 Add support for s... |
693 |
skd_timer_tick_not_online(skdev); |
e67f86b31 Add support for s... |
694 |
|
e67f86b31 Add support for s... |
695 696 697 698 699 700 701 702 703 704 705 706 |
mod_timer(&skdev->timer, (jiffies + HZ)); spin_unlock_irqrestore(&skdev->lock, reqflags); } static void skd_timer_tick_not_online(struct skd_device *skdev) { switch (skdev->state) { case SKD_DRVR_STATE_IDLE: case SKD_DRVR_STATE_LOAD: break; case SKD_DRVR_STATE_BUSY_SANITIZE: |
f98806d61 skd: Switch from ... |
707 708 709 710 |
dev_dbg(&skdev->pdev->dev, "drive busy sanitize[%x], driver[%x] ", skdev->drive_state, skdev->state); |
e67f86b31 Add support for s... |
711 712 713 714 715 716 717 |
/* If we've been in sanitize for 3 seconds, we figure we're not * going to get anymore completions, so recover requests now */ if (skdev->timer_countdown > 0) { skdev->timer_countdown--; return; } |
79ce12a82 skd: Drop second ... |
718 |
skd_recover_requests(skdev); |
e67f86b31 Add support for s... |
719 720 721 722 723 |
break; case SKD_DRVR_STATE_BUSY: case SKD_DRVR_STATE_BUSY_IMMINENT: case SKD_DRVR_STATE_BUSY_ERASE: |
f98806d61 skd: Switch from ... |
724 725 726 |
dev_dbg(&skdev->pdev->dev, "busy[%x], countdown=%d ", skdev->state, skdev->timer_countdown); |
e67f86b31 Add support for s... |
727 728 729 730 |
if (skdev->timer_countdown > 0) { skdev->timer_countdown--; return; } |
f98806d61 skd: Switch from ... |
731 732 733 |
dev_dbg(&skdev->pdev->dev, "busy[%x], timedout=%d, restarting device.", skdev->state, skdev->timer_countdown); |
e67f86b31 Add support for s... |
734 735 736 737 738 739 740 741 742 743 744 745 |
skd_restart_device(skdev); break; case SKD_DRVR_STATE_WAIT_BOOT: case SKD_DRVR_STATE_STARTING: if (skdev->timer_countdown > 0) { skdev->timer_countdown--; return; } /* For now, we fault the drive. Could attempt resets to * revcover at some point. */ skdev->state = SKD_DRVR_STATE_FAULT; |
f98806d61 skd: Switch from ... |
746 747 748 |
dev_err(&skdev->pdev->dev, "DriveFault Connect Timeout (%x) ", skdev->drive_state); |
e67f86b31 Add support for s... |
749 750 751 |
/*start the queue so we can respond with error to requests */ /* wakeup anyone waiting for startup complete */ |
ca33dd929 skd: Convert to b... |
752 |
schedule_work(&skdev->start_queue); |
e67f86b31 Add support for s... |
753 754 755 756 757 758 759 760 761 762 763 |
skdev->gendisk_on = -1; wake_up_interruptible(&skdev->waitq); break; case SKD_DRVR_STATE_ONLINE: /* shouldn't get here. */ break; case SKD_DRVR_STATE_PAUSING: case SKD_DRVR_STATE_PAUSED: break; |
e67f86b31 Add support for s... |
764 765 766 767 768 769 770 771 |
case SKD_DRVR_STATE_RESTARTING: if (skdev->timer_countdown > 0) { skdev->timer_countdown--; return; } /* For now, we fault the drive. Could attempt resets to * revcover at some point. */ skdev->state = SKD_DRVR_STATE_FAULT; |
f98806d61 skd: Switch from ... |
772 773 774 775 |
dev_err(&skdev->pdev->dev, "DriveFault Reconnect Timeout (%x) ", skdev->drive_state); |
e67f86b31 Add support for s... |
776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 |
/* * Recovering does two things: * 1. completes IO with error * 2. reclaims dma resources * When is it safe to recover requests? * - if the drive state is faulted * - if the state is still soft reset after out timeout * - if the drive registers are dead (state = FF) * If it is "unsafe", we still need to recover, so we will * disable pci bus mastering and disable our interrupts. */ if ((skdev->drive_state == FIT_SR_DRIVE_SOFT_RESET) || (skdev->drive_state == FIT_SR_DRIVE_FAULT) || (skdev->drive_state == FIT_SR_DRIVE_STATE_MASK)) /* It never came out of soft reset. Try to * recover the requests and then let them * fail. This is to mitigate hung processes. */ |
79ce12a82 skd: Drop second ... |
795 |
skd_recover_requests(skdev); |
e67f86b31 Add support for s... |
796 |
else { |
f98806d61 skd: Switch from ... |
797 798 799 |
dev_err(&skdev->pdev->dev, "Disable BusMaster (%x) ", skdev->drive_state); |
e67f86b31 Add support for s... |
800 801 |
pci_disable_device(skdev->pdev); skd_disable_interrupts(skdev); |
79ce12a82 skd: Drop second ... |
802 |
skd_recover_requests(skdev); |
e67f86b31 Add support for s... |
803 804 805 806 |
} /*start the queue so we can respond with error to requests */ /* wakeup anyone waiting for startup complete */ |
ca33dd929 skd: Convert to b... |
807 |
schedule_work(&skdev->start_queue); |
e67f86b31 Add support for s... |
808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 |
skdev->gendisk_on = -1; wake_up_interruptible(&skdev->waitq); break; case SKD_DRVR_STATE_RESUMING: case SKD_DRVR_STATE_STOPPING: case SKD_DRVR_STATE_SYNCING: case SKD_DRVR_STATE_FAULT: case SKD_DRVR_STATE_DISAPPEARED: default: break; } } static int skd_start_timer(struct skd_device *skdev) { int rc; |
e99e88a9d treewide: setup_t... |
825 |
timer_setup(&skdev->timer, skd_timer_tick, 0); |
e67f86b31 Add support for s... |
826 827 828 |
rc = mod_timer(&skdev->timer, (jiffies + HZ)); if (rc) |
f98806d61 skd: Switch from ... |
829 830 |
dev_err(&skdev->pdev->dev, "failed to start timer %d ", rc); |
e67f86b31 Add support for s... |
831 832 833 834 835 836 837 838 839 840 |
return rc; } static void skd_kill_timer(struct skd_device *skdev) { del_timer_sync(&skdev->timer); } /* ***************************************************************************** |
e67f86b31 Add support for s... |
841 842 843 844 845 846 847 848 849 850 851 |
* INTERNAL REQUESTS -- generated by driver itself ***************************************************************************** */ static int skd_format_internal_skspcl(struct skd_device *skdev) { struct skd_special_context *skspcl = &skdev->internal_skspcl; struct fit_sg_descriptor *sgd = &skspcl->req.sksg_list[0]; struct fit_msg_hdr *fmh; uint64_t dma_address; struct skd_scsi_request *scsi; |
d891fe609 skd: Use a struct... |
852 |
fmh = &skspcl->msg_buf->fmh; |
e67f86b31 Add support for s... |
853 854 |
fmh->protocol_id = FIT_PROTOCOL_ID_SOFIT; fmh->num_protocol_cmds_coalesced = 1; |
d891fe609 skd: Use a struct... |
855 |
scsi = &skspcl->msg_buf->scsi[0]; |
e67f86b31 Add support for s... |
856 857 858 |
memset(scsi, 0, sizeof(*scsi)); dma_address = skspcl->req.sksg_dma_address; scsi->hdr.sg_list_dma_address = cpu_to_be64(dma_address); |
32494df9a skd: Initialize s... |
859 |
skspcl->req.n_sg = 1; |
e67f86b31 Add support for s... |
860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 |
sgd->control = FIT_SGD_CONTROL_LAST; sgd->byte_count = 0; sgd->host_side_addr = skspcl->db_dma_address; sgd->dev_side_addr = 0; sgd->next_desc_ptr = 0LL; return 1; } #define WR_BUF_SIZE SKD_N_INTERNAL_BYTES static void skd_send_internal_skspcl(struct skd_device *skdev, struct skd_special_context *skspcl, u8 opcode) { struct fit_sg_descriptor *sgd = &skspcl->req.sksg_list[0]; struct skd_scsi_request *scsi; unsigned char *buf = skspcl->data_buf; int i; if (skspcl->req.state != SKD_REQ_STATE_IDLE) /* * A refresh is already in progress. * Just wait for it to finish. */ return; |
e67f86b31 Add support for s... |
886 |
skspcl->req.state = SKD_REQ_STATE_BUSY; |
e67f86b31 Add support for s... |
887 |
|
d891fe609 skd: Use a struct... |
888 |
scsi = &skspcl->msg_buf->scsi[0]; |
e67f86b31 Add support for s... |
889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 |
scsi->hdr.tag = skspcl->req.id; memset(scsi->cdb, 0, sizeof(scsi->cdb)); switch (opcode) { case TEST_UNIT_READY: scsi->cdb[0] = TEST_UNIT_READY; sgd->byte_count = 0; scsi->hdr.sg_list_len_bytes = 0; break; case READ_CAPACITY: scsi->cdb[0] = READ_CAPACITY; sgd->byte_count = SKD_N_READ_CAP_BYTES; scsi->hdr.sg_list_len_bytes = cpu_to_be32(sgd->byte_count); break; case INQUIRY: scsi->cdb[0] = INQUIRY; scsi->cdb[1] = 0x01; /* evpd */ scsi->cdb[2] = 0x80; /* serial number page */ scsi->cdb[4] = 0x10; sgd->byte_count = 16; scsi->hdr.sg_list_len_bytes = cpu_to_be32(sgd->byte_count); break; case SYNCHRONIZE_CACHE: scsi->cdb[0] = SYNCHRONIZE_CACHE; sgd->byte_count = 0; scsi->hdr.sg_list_len_bytes = 0; break; case WRITE_BUFFER: scsi->cdb[0] = WRITE_BUFFER; scsi->cdb[1] = 0x02; scsi->cdb[7] = (WR_BUF_SIZE & 0xFF00) >> 8; scsi->cdb[8] = WR_BUF_SIZE & 0xFF; sgd->byte_count = WR_BUF_SIZE; scsi->hdr.sg_list_len_bytes = cpu_to_be32(sgd->byte_count); /* fill incrementing byte pattern */ for (i = 0; i < sgd->byte_count; i++) buf[i] = i & 0xFF; break; case READ_BUFFER: scsi->cdb[0] = READ_BUFFER; scsi->cdb[1] = 0x02; scsi->cdb[7] = (WR_BUF_SIZE & 0xFF00) >> 8; scsi->cdb[8] = WR_BUF_SIZE & 0xFF; sgd->byte_count = WR_BUF_SIZE; scsi->hdr.sg_list_len_bytes = cpu_to_be32(sgd->byte_count); memset(skspcl->data_buf, 0, sgd->byte_count); break; default: SKD_ASSERT("Don't know what to send"); return; } skd_send_special_fitmsg(skdev, skspcl); } static void skd_refresh_device_data(struct skd_device *skdev) { struct skd_special_context *skspcl = &skdev->internal_skspcl; skd_send_internal_skspcl(skdev, skspcl, TEST_UNIT_READY); } static int skd_chk_read_buf(struct skd_device *skdev, struct skd_special_context *skspcl) { unsigned char *buf = skspcl->data_buf; int i; /* check for incrementing byte pattern */ for (i = 0; i < WR_BUF_SIZE; i++) if (buf[i] != (i & 0xFF)) return 1; return 0; } static void skd_log_check_status(struct skd_device *skdev, u8 status, u8 key, u8 code, u8 qual, u8 fruc) { /* If the check condition is of special interest, log a message */ if ((status == SAM_STAT_CHECK_CONDITION) && (key == 0x02) && (code == 0x04) && (qual == 0x06)) { |
f98806d61 skd: Switch from ... |
978 979 980 981 |
dev_err(&skdev->pdev->dev, "*** LOST_WRITE_DATA ERROR *** key/asc/ascq/fruc %02x/%02x/%02x/%02x ", key, code, qual, fruc); |
e67f86b31 Add support for s... |
982 983 984 985 |
} } static void skd_complete_internal(struct skd_device *skdev, |
85e34112c skd: Remove super... |
986 987 |
struct fit_completion_entry_v1 *skcomp, struct fit_comp_error_info *skerr, |
e67f86b31 Add support for s... |
988 989 990 991 992 |
struct skd_special_context *skspcl) { u8 *buf = skspcl->data_buf; u8 status; int i; |
d891fe609 skd: Use a struct... |
993 |
struct skd_scsi_request *scsi = &skspcl->msg_buf->scsi[0]; |
e67f86b31 Add support for s... |
994 |
|
760b48ca9 skd: Document loc... |
995 |
lockdep_assert_held(&skdev->lock); |
e67f86b31 Add support for s... |
996 |
SKD_ASSERT(skspcl == &skdev->internal_skspcl); |
f98806d61 skd: Switch from ... |
997 998 |
dev_dbg(&skdev->pdev->dev, "complete internal %x ", scsi->cdb[0]); |
e67f86b31 Add support for s... |
999 |
|
a3db102de skd: Reduce memor... |
1000 1001 1002 1003 |
dma_sync_single_for_cpu(&skdev->pdev->dev, skspcl->db_dma_address, skspcl->req.sksg_list[0].byte_count, DMA_BIDIRECTIONAL); |
e67f86b31 Add support for s... |
1004 1005 |
skspcl->req.completion = *skcomp; skspcl->req.state = SKD_REQ_STATE_IDLE; |
e67f86b31 Add support for s... |
1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 |
status = skspcl->req.completion.status; skd_log_check_status(skdev, status, skerr->key, skerr->code, skerr->qual, skerr->fruc); switch (scsi->cdb[0]) { case TEST_UNIT_READY: if (status == SAM_STAT_GOOD) skd_send_internal_skspcl(skdev, skspcl, WRITE_BUFFER); else if ((status == SAM_STAT_CHECK_CONDITION) && (skerr->key == MEDIUM_ERROR)) skd_send_internal_skspcl(skdev, skspcl, WRITE_BUFFER); else { if (skdev->state == SKD_DRVR_STATE_STOPPING) { |
f98806d61 skd: Switch from ... |
1021 1022 1023 1024 |
dev_dbg(&skdev->pdev->dev, "TUR failed, don't send anymore state 0x%x ", skdev->state); |
e67f86b31 Add support for s... |
1025 1026 |
return; } |
f98806d61 skd: Switch from ... |
1027 1028 1029 |
dev_dbg(&skdev->pdev->dev, "**** TUR failed, retry skerr "); |
fb4844b8a skb: Use symbolic... |
1030 1031 |
skd_send_internal_skspcl(skdev, skspcl, TEST_UNIT_READY); |
e67f86b31 Add support for s... |
1032 1033 1034 1035 1036 1037 1038 1039 |
} break; case WRITE_BUFFER: if (status == SAM_STAT_GOOD) skd_send_internal_skspcl(skdev, skspcl, READ_BUFFER); else { if (skdev->state == SKD_DRVR_STATE_STOPPING) { |
f98806d61 skd: Switch from ... |
1040 1041 1042 1043 |
dev_dbg(&skdev->pdev->dev, "write buffer failed, don't send anymore state 0x%x ", skdev->state); |
e67f86b31 Add support for s... |
1044 1045 |
return; } |
f98806d61 skd: Switch from ... |
1046 1047 1048 |
dev_dbg(&skdev->pdev->dev, "**** write buffer failed, retry skerr "); |
fb4844b8a skb: Use symbolic... |
1049 1050 |
skd_send_internal_skspcl(skdev, skspcl, TEST_UNIT_READY); |
e67f86b31 Add support for s... |
1051 1052 1053 1054 1055 1056 1057 1058 1059 |
} break; case READ_BUFFER: if (status == SAM_STAT_GOOD) { if (skd_chk_read_buf(skdev, skspcl) == 0) skd_send_internal_skspcl(skdev, skspcl, READ_CAPACITY); else { |
f98806d61 skd: Switch from ... |
1060 1061 1062 1063 |
dev_err(&skdev->pdev->dev, "*** W/R Buffer mismatch %d *** ", skdev->connect_retries); |
e67f86b31 Add support for s... |
1064 1065 1066 1067 1068 |
if (skdev->connect_retries < SKD_MAX_CONNECT_RETRIES) { skdev->connect_retries++; skd_soft_reset(skdev); } else { |
f98806d61 skd: Switch from ... |
1069 1070 1071 |
dev_err(&skdev->pdev->dev, "W/R Buffer Connect Error "); |
e67f86b31 Add support for s... |
1072 1073 1074 1075 1076 1077 |
return; } } } else { if (skdev->state == SKD_DRVR_STATE_STOPPING) { |
f98806d61 skd: Switch from ... |
1078 1079 1080 1081 |
dev_dbg(&skdev->pdev->dev, "read buffer failed, don't send anymore state 0x%x ", skdev->state); |
e67f86b31 Add support for s... |
1082 1083 |
return; } |
f98806d61 skd: Switch from ... |
1084 1085 1086 |
dev_dbg(&skdev->pdev->dev, "**** read buffer failed, retry skerr "); |
fb4844b8a skb: Use symbolic... |
1087 1088 |
skd_send_internal_skspcl(skdev, skspcl, TEST_UNIT_READY); |
e67f86b31 Add support for s... |
1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 |
} break; case READ_CAPACITY: skdev->read_cap_is_valid = 0; if (status == SAM_STAT_GOOD) { skdev->read_cap_last_lba = (buf[0] << 24) | (buf[1] << 16) | (buf[2] << 8) | buf[3]; skdev->read_cap_blocksize = (buf[4] << 24) | (buf[5] << 16) | (buf[6] << 8) | buf[7]; |
f98806d61 skd: Switch from ... |
1101 1102 1103 1104 |
dev_dbg(&skdev->pdev->dev, "last lba %d, bs %d ", skdev->read_cap_last_lba, skdev->read_cap_blocksize); |
e67f86b31 Add support for s... |
1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 |
set_capacity(skdev->disk, skdev->read_cap_last_lba + 1); skdev->read_cap_is_valid = 1; skd_send_internal_skspcl(skdev, skspcl, INQUIRY); } else if ((status == SAM_STAT_CHECK_CONDITION) && (skerr->key == MEDIUM_ERROR)) { skdev->read_cap_last_lba = ~0; set_capacity(skdev->disk, skdev->read_cap_last_lba + 1); |
f98806d61 skd: Switch from ... |
1115 1116 |
dev_dbg(&skdev->pdev->dev, "**** MEDIUM ERROR caused READCAP to fail, ignore failure and continue to inquiry "); |
e67f86b31 Add support for s... |
1117 1118 |
skd_send_internal_skspcl(skdev, skspcl, INQUIRY); } else { |
f98806d61 skd: Switch from ... |
1119 1120 |
dev_dbg(&skdev->pdev->dev, "**** READCAP failed, retry TUR "); |
e67f86b31 Add support for s... |
1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 |
skd_send_internal_skspcl(skdev, skspcl, TEST_UNIT_READY); } break; case INQUIRY: skdev->inquiry_is_valid = 0; if (status == SAM_STAT_GOOD) { skdev->inquiry_is_valid = 1; for (i = 0; i < 12; i++) skdev->inq_serial_num[i] = buf[i + 4]; skdev->inq_serial_num[12] = 0; } if (skd_unquiesce_dev(skdev) < 0) |
f98806d61 skd: Switch from ... |
1137 1138 |
dev_dbg(&skdev->pdev->dev, "**** failed, to ONLINE device "); |
e67f86b31 Add support for s... |
1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 |
/* connection is complete */ skdev->connect_retries = 0; break; case SYNCHRONIZE_CACHE: if (status == SAM_STAT_GOOD) skdev->sync_done = 1; else skdev->sync_done = -1; wake_up_interruptible(&skdev->waitq); break; default: SKD_ASSERT("we didn't send this"); } } /* ***************************************************************************** * FIT MESSAGES ***************************************************************************** */ static void skd_send_fitmsg(struct skd_device *skdev, struct skd_fitmsg_context *skmsg) { u64 qcmd; |
e67f86b31 Add support for s... |
1166 |
|
ea870bb2a block: skd: Use %... |
1167 1168 1169 |
dev_dbg(&skdev->pdev->dev, "dma address %pad, busy=%d ", &skmsg->mb_dma_address, skd_in_flight(skdev)); |
6507f436f skd: Simplify the... |
1170 1171 |
dev_dbg(&skdev->pdev->dev, "msg_buf %p ", skmsg->msg_buf); |
e67f86b31 Add support for s... |
1172 1173 1174 |
qcmd = skmsg->mb_dma_address; qcmd |= FIT_QCMD_QID_NORMAL; |
e67f86b31 Add support for s... |
1175 1176 1177 1178 |
if (unlikely(skdev->dbg_level > 1)) { u8 *bp = (u8 *)skmsg->msg_buf; int i; for (i = 0; i < skmsg->length; i += 8) { |
f98806d61 skd: Switch from ... |
1179 1180 1181 |
dev_dbg(&skdev->pdev->dev, "msg[%2d] %8ph ", i, &bp[i]); |
e67f86b31 Add support for s... |
1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 |
if (i == 0) i = 64 - 8; } } if (skmsg->length > 256) qcmd |= FIT_QCMD_MSGSIZE_512; else if (skmsg->length > 128) qcmd |= FIT_QCMD_MSGSIZE_256; else if (skmsg->length > 64) qcmd |= FIT_QCMD_MSGSIZE_128; else /* * This makes no sense because the FIT msg header is * 64 bytes. If the msg is only 64 bytes long it has * no payload. */ qcmd |= FIT_QCMD_MSGSIZE_64; |
a3db102de skd: Reduce memor... |
1200 1201 |
dma_sync_single_for_device(&skdev->pdev->dev, skmsg->mb_dma_address, skmsg->length, DMA_TO_DEVICE); |
5fbd545cd skd: Submit reque... |
1202 1203 |
/* Make sure skd_msg_buf is written before the doorbell is triggered. */ smp_wmb(); |
e67f86b31 Add support for s... |
1204 |
SKD_WRITEQ(skdev, qcmd, FIT_Q_COMMAND); |
e67f86b31 Add support for s... |
1205 1206 1207 1208 1209 1210 |
} static void skd_send_special_fitmsg(struct skd_device *skdev, struct skd_special_context *skspcl) { u64 qcmd; |
a3db102de skd: Reduce memor... |
1211 |
WARN_ON_ONCE(skspcl->req.n_sg != 1); |
e67f86b31 Add support for s... |
1212 1213 1214 1215 1216 |
if (unlikely(skdev->dbg_level > 1)) { u8 *bp = (u8 *)skspcl->msg_buf; int i; for (i = 0; i < SKD_N_SPECIAL_FITMSG_BYTES; i += 8) { |
f98806d61 skd: Switch from ... |
1217 1218 1219 |
dev_dbg(&skdev->pdev->dev, " spcl[%2d] %8ph ", i, &bp[i]); |
e67f86b31 Add support for s... |
1220 1221 1222 |
if (i == 0) i = 64 - 8; } |
f98806d61 skd: Switch from ... |
1223 |
dev_dbg(&skdev->pdev->dev, |
ea870bb2a block: skd: Use %... |
1224 1225 |
"skspcl=%p id=%04x sksg_list=%p sksg_dma=%pad ", |
f98806d61 skd: Switch from ... |
1226 |
skspcl, skspcl->req.id, skspcl->req.sksg_list, |
ea870bb2a block: skd: Use %... |
1227 |
&skspcl->req.sksg_dma_address); |
e67f86b31 Add support for s... |
1228 1229 1230 |
for (i = 0; i < skspcl->req.n_sg; i++) { struct fit_sg_descriptor *sgd = &skspcl->req.sksg_list[i]; |
f98806d61 skd: Switch from ... |
1231 1232 1233 1234 1235 |
dev_dbg(&skdev->pdev->dev, " sg[%d] count=%u ctrl=0x%x addr=0x%llx next=0x%llx ", i, sgd->byte_count, sgd->control, sgd->host_side_addr, sgd->next_desc_ptr); |
e67f86b31 Add support for s... |
1236 1237 1238 1239 1240 1241 1242 1243 1244 |
} } /* * Special FIT msgs are always 128 bytes: a 64-byte FIT hdr * and one 64-byte SSDI command. */ qcmd = skspcl->mb_dma_address; qcmd |= FIT_QCMD_QID_NORMAL + FIT_QCMD_MSGSIZE_128; |
a3db102de skd: Reduce memor... |
1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 |
dma_sync_single_for_device(&skdev->pdev->dev, skspcl->mb_dma_address, SKD_N_SPECIAL_FITMSG_BYTES, DMA_TO_DEVICE); dma_sync_single_for_device(&skdev->pdev->dev, skspcl->req.sksg_dma_address, 1 * sizeof(struct fit_sg_descriptor), DMA_TO_DEVICE); dma_sync_single_for_device(&skdev->pdev->dev, skspcl->db_dma_address, skspcl->req.sksg_list[0].byte_count, DMA_BIDIRECTIONAL); |
5fbd545cd skd: Submit reque... |
1255 1256 |
/* Make sure skd_msg_buf is written before the doorbell is triggered. */ smp_wmb(); |
e67f86b31 Add support for s... |
1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 |
SKD_WRITEQ(skdev, qcmd, FIT_Q_COMMAND); } /* ***************************************************************************** * COMPLETION QUEUE ***************************************************************************** */ static void skd_complete_other(struct skd_device *skdev, |
85e34112c skd: Remove super... |
1267 1268 |
struct fit_completion_entry_v1 *skcomp, struct fit_comp_error_info *skerr); |
e67f86b31 Add support for s... |
1269 |
|
e67f86b31 Add support for s... |
1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 |
struct sns_info { u8 type; u8 stat; u8 key; u8 asc; u8 ascq; u8 mask; enum skd_check_status_action action; }; static struct sns_info skd_chkstat_table[] = { /* Good */ { 0x70, 0x02, RECOVERED_ERROR, 0, 0, 0x1c, SKD_CHECK_STATUS_REPORT_GOOD }, /* Smart alerts */ { 0x70, 0x02, NO_SENSE, 0x0B, 0x00, 0x1E, /* warnings */ SKD_CHECK_STATUS_REPORT_SMART_ALERT }, { 0x70, 0x02, NO_SENSE, 0x5D, 0x00, 0x1E, /* thresholds */ SKD_CHECK_STATUS_REPORT_SMART_ALERT }, { 0x70, 0x02, RECOVERED_ERROR, 0x0B, 0x01, 0x1F, /* temperature over trigger */ SKD_CHECK_STATUS_REPORT_SMART_ALERT }, /* Retry (with limits) */ { 0x70, 0x02, 0x0B, 0, 0, 0x1C, /* This one is for DMA ERROR */ SKD_CHECK_STATUS_REQUEUE_REQUEST }, { 0x70, 0x02, 0x06, 0x0B, 0x00, 0x1E, /* warnings */ SKD_CHECK_STATUS_REQUEUE_REQUEST }, { 0x70, 0x02, 0x06, 0x5D, 0x00, 0x1E, /* thresholds */ SKD_CHECK_STATUS_REQUEUE_REQUEST }, { 0x70, 0x02, 0x06, 0x80, 0x30, 0x1F, /* backup power */ SKD_CHECK_STATUS_REQUEUE_REQUEST }, /* Busy (or about to be) */ { 0x70, 0x02, 0x06, 0x3f, 0x01, 0x1F, /* fw changed */ SKD_CHECK_STATUS_BUSY_IMMINENT }, }; /* * Look up status and sense data to decide how to handle the error * from the device. * mask says which fields must match e.g., mask=0x18 means check * type and stat, ignore key, asc, ascq. */ |
38d4a1bb9 skd: more removal... |
1314 1315 |
static enum skd_check_status_action skd_check_status(struct skd_device *skdev, |
85e34112c skd: Remove super... |
1316 |
u8 cmp_status, struct fit_comp_error_info *skerr) |
e67f86b31 Add support for s... |
1317 |
{ |
0b2e0c077 skd: Use ARRAY_SI... |
1318 |
int i; |
e67f86b31 Add support for s... |
1319 |
|
f98806d61 skd: Switch from ... |
1320 1321 1322 |
dev_err(&skdev->pdev->dev, "key/asc/ascq/fruc %02x/%02x/%02x/%02x ", skerr->key, skerr->code, skerr->qual, skerr->fruc); |
e67f86b31 Add support for s... |
1323 |
|
f98806d61 skd: Switch from ... |
1324 1325 1326 1327 1328 |
dev_dbg(&skdev->pdev->dev, "stat: t=%02x stat=%02x k=%02x c=%02x q=%02x fruc=%02x ", skerr->type, cmp_status, skerr->key, skerr->code, skerr->qual, skerr->fruc); |
e67f86b31 Add support for s... |
1329 1330 |
/* Does the info match an entry in the good category? */ |
0b2e0c077 skd: Use ARRAY_SI... |
1331 |
for (i = 0; i < ARRAY_SIZE(skd_chkstat_table); i++) { |
e67f86b31 Add support for s... |
1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 |
struct sns_info *sns = &skd_chkstat_table[i]; if (sns->mask & 0x10) if (skerr->type != sns->type) continue; if (sns->mask & 0x08) if (cmp_status != sns->stat) continue; if (sns->mask & 0x04) if (skerr->key != sns->key) continue; if (sns->mask & 0x02) if (skerr->code != sns->asc) continue; if (sns->mask & 0x01) if (skerr->qual != sns->ascq) continue; if (sns->action == SKD_CHECK_STATUS_REPORT_SMART_ALERT) { |
f98806d61 skd: Switch from ... |
1355 1356 1357 1358 |
dev_err(&skdev->pdev->dev, "SMART Alert: sense key/asc/ascq %02x/%02x/%02x ", skerr->key, skerr->code, skerr->qual); |
e67f86b31 Add support for s... |
1359 1360 1361 1362 1363 1364 1365 1366 |
} return sns->action; } /* No other match, so nonzero status means error, * zero status means good */ if (cmp_status) { |
f98806d61 skd: Switch from ... |
1367 1368 |
dev_dbg(&skdev->pdev->dev, "status check: error "); |
e67f86b31 Add support for s... |
1369 1370 |
return SKD_CHECK_STATUS_REPORT_ERROR; } |
f98806d61 skd: Switch from ... |
1371 1372 |
dev_dbg(&skdev->pdev->dev, "status check good default "); |
e67f86b31 Add support for s... |
1373 1374 1375 1376 |
return SKD_CHECK_STATUS_REPORT_GOOD; } static void skd_resolve_req_exception(struct skd_device *skdev, |
f18c17c88 skd: Enable reque... |
1377 1378 |
struct skd_request_context *skreq, struct request *req) |
e67f86b31 Add support for s... |
1379 1380 1381 1382 1383 1384 |
{ u8 cmp_status = skreq->completion.status; switch (skd_check_status(skdev, cmp_status, &skreq->err_info)) { case SKD_CHECK_STATUS_REPORT_GOOD: case SKD_CHECK_STATUS_REPORT_SMART_ALERT: |
795bc1b54 skd: Inline skd_e... |
1385 |
skreq->status = BLK_STS_OK; |
15f73f5b3 blk-mq: move fail... |
1386 1387 |
if (likely(!blk_should_fake_timeout(req->q))) blk_mq_complete_request(req); |
e67f86b31 Add support for s... |
1388 1389 1390 1391 |
break; case SKD_CHECK_STATUS_BUSY_IMMINENT: skd_log_skreq(skdev, skreq, "retry(busy)"); |
6d1f9dfde skd: fixup usage ... |
1392 |
blk_mq_requeue_request(req, true); |
f98806d61 skd: Switch from ... |
1393 1394 |
dev_info(&skdev->pdev->dev, "drive BUSY imminent "); |
e67f86b31 Add support for s... |
1395 1396 1397 1398 1399 1400 |
skdev->state = SKD_DRVR_STATE_BUSY_IMMINENT; skdev->timer_countdown = SKD_TIMER_MINUTES(20); skd_quiesce_dev(skdev); break; case SKD_CHECK_STATUS_REQUEUE_REQUEST: |
1bee42438 skd_main: don't u... |
1401 |
if (++skreq->retries < SKD_MAX_RETRIES) { |
fcd37eb3c skd: rip out bio ... |
1402 |
skd_log_skreq(skdev, skreq, "retry"); |
6d1f9dfde skd: fixup usage ... |
1403 |
blk_mq_requeue_request(req, true); |
fcd37eb3c skd: rip out bio ... |
1404 |
break; |
e67f86b31 Add support for s... |
1405 |
} |
df561f668 treewide: Use fal... |
1406 |
fallthrough; |
e67f86b31 Add support for s... |
1407 1408 1409 |
case SKD_CHECK_STATUS_REPORT_ERROR: default: |
795bc1b54 skd: Inline skd_e... |
1410 |
skreq->status = BLK_STS_IOERR; |
15f73f5b3 blk-mq: move fail... |
1411 1412 |
if (likely(!blk_should_fake_timeout(req->q))) blk_mq_complete_request(req); |
e67f86b31 Add support for s... |
1413 1414 1415 |
break; } } |
e67f86b31 Add support for s... |
1416 1417 1418 |
static void skd_release_skreq(struct skd_device *skdev, struct skd_request_context *skreq) { |
e67f86b31 Add support for s... |
1419 |
/* |
e67f86b31 Add support for s... |
1420 1421 1422 |
* Reclaim the skd_request_context */ skreq->state = SKD_REQ_STATE_IDLE; |
f18c17c88 skd: Enable reque... |
1423 |
} |
e67f86b31 Add support for s... |
1424 1425 1426 |
static int skd_isr_completion_posted(struct skd_device *skdev, int limit, int *enqueued) { |
85e34112c skd: Remove super... |
1427 1428 |
struct fit_completion_entry_v1 *skcmp; struct fit_comp_error_info *skerr; |
e67f86b31 Add support for s... |
1429 |
u16 req_id; |
f18c17c88 skd: Enable reque... |
1430 |
u32 tag; |
ca33dd929 skd: Convert to b... |
1431 |
u16 hwq = 0; |
f18c17c88 skd: Enable reque... |
1432 |
struct request *rq; |
e67f86b31 Add support for s... |
1433 |
struct skd_request_context *skreq; |
c830da8cb skd: Remove super... |
1434 1435 1436 1437 |
u16 cmp_cntxt; u8 cmp_status; u8 cmp_cycle; u32 cmp_bytes; |
c0b3dda7e skd: Uninitialize... |
1438 |
int rc = 0; |
e67f86b31 Add support for s... |
1439 |
int processed = 0; |
e67f86b31 Add support for s... |
1440 |
|
760b48ca9 skd: Document loc... |
1441 |
lockdep_assert_held(&skdev->lock); |
e67f86b31 Add support for s... |
1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 |
for (;; ) { SKD_ASSERT(skdev->skcomp_ix < SKD_N_COMPLETION_ENTRY); skcmp = &skdev->skcomp_table[skdev->skcomp_ix]; cmp_cycle = skcmp->cycle; cmp_cntxt = skcmp->tag; cmp_status = skcmp->status; cmp_bytes = be32_to_cpu(skcmp->num_returned_bytes); skerr = &skdev->skerr_table[skdev->skcomp_ix]; |
f98806d61 skd: Switch from ... |
1452 1453 1454 1455 |
dev_dbg(&skdev->pdev->dev, "cycle=%d ix=%d got cycle=%d cmdctxt=0x%x stat=%d busy=%d rbytes=0x%x proto=%d ", skdev->skcomp_cycle, skdev->skcomp_ix, cmp_cycle, |
d4d0f5fc3 skd: Remove skd_d... |
1456 |
cmp_cntxt, cmp_status, skd_in_flight(skdev), |
6fbb2de5c skd: Convert seve... |
1457 |
cmp_bytes, skdev->proto_ver); |
e67f86b31 Add support for s... |
1458 1459 |
if (cmp_cycle != skdev->skcomp_cycle) { |
f98806d61 skd: Switch from ... |
1460 1461 |
dev_dbg(&skdev->pdev->dev, "end of completions "); |
e67f86b31 Add support for s... |
1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 |
break; } /* * Update the completion queue head index and possibly * the completion cycle count. 8-bit wrap-around. */ skdev->skcomp_ix++; if (skdev->skcomp_ix >= SKD_N_COMPLETION_ENTRY) { skdev->skcomp_ix = 0; skdev->skcomp_cycle++; } /* * The command context is a unique 32-bit ID. The low order * bits help locate the request. The request is usually a * r/w request (see skd_start() above) or a special request. */ req_id = cmp_cntxt; |
f18c17c88 skd: Enable reque... |
1480 |
tag = req_id & SKD_ID_SLOT_AND_TABLE_MASK; |
e67f86b31 Add support for s... |
1481 1482 |
/* Is this other than a r/w request? */ |
f18c17c88 skd: Enable reque... |
1483 |
if (tag >= skdev->num_req_context) { |
e67f86b31 Add support for s... |
1484 1485 1486 |
/* * This is not a completion for a r/w request. */ |
ca33dd929 skd: Convert to b... |
1487 1488 |
WARN_ON_ONCE(blk_mq_tag_to_rq(skdev->tag_set.tags[hwq], tag)); |
e67f86b31 Add support for s... |
1489 1490 1491 |
skd_complete_other(skdev, skcmp, skerr); continue; } |
ca33dd929 skd: Convert to b... |
1492 |
rq = blk_mq_tag_to_rq(skdev->tag_set.tags[hwq], tag); |
f18c17c88 skd: Enable reque... |
1493 1494 1495 1496 |
if (WARN(!rq, "No request for tag %#x -> %#x ", cmp_cntxt, tag)) continue; |
e7278a8b3 skd: Coalesce str... |
1497 |
skreq = blk_mq_rq_to_pdu(rq); |
e67f86b31 Add support for s... |
1498 1499 1500 1501 1502 |
/* * Make sure the request ID for the slot matches. */ if (skreq->id != req_id) { |
49f16e2f2 skd: Report compl... |
1503 1504 1505 1506 |
dev_err(&skdev->pdev->dev, "Completion mismatch comp_id=0x%04x skreq=0x%04x new=0x%04x ", req_id, skreq->id, cmp_cntxt); |
e67f86b31 Add support for s... |
1507 |
|
49f16e2f2 skd: Report compl... |
1508 |
continue; |
e67f86b31 Add support for s... |
1509 1510 1511 |
} SKD_ASSERT(skreq->state == SKD_REQ_STATE_BUSY); |
e67f86b31 Add support for s... |
1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 |
skreq->completion = *skcmp; if (unlikely(cmp_status == SAM_STAT_CHECK_CONDITION)) { skreq->err_info = *skerr; skd_log_check_status(skdev, cmp_status, skerr->key, skerr->code, skerr->qual, skerr->fruc); } /* Release DMA resources for the request. */ if (skreq->n_sg > 0) skd_postop_sg_list(skdev, skreq); |
f18c17c88 skd: Enable reque... |
1522 |
skd_release_skreq(skdev, skreq); |
e67f86b31 Add support for s... |
1523 1524 |
/* |
f18c17c88 skd: Enable reque... |
1525 |
* Capture the outcome and post it back to the native request. |
e67f86b31 Add support for s... |
1526 |
*/ |
795bc1b54 skd: Inline skd_e... |
1527 1528 |
if (likely(cmp_status == SAM_STAT_GOOD)) { skreq->status = BLK_STS_OK; |
15f73f5b3 blk-mq: move fail... |
1529 1530 |
if (likely(!blk_should_fake_timeout(rq->q))) blk_mq_complete_request(rq); |
795bc1b54 skd: Inline skd_e... |
1531 |
} else { |
f18c17c88 skd: Enable reque... |
1532 |
skd_resolve_req_exception(skdev, skreq, rq); |
795bc1b54 skd: Inline skd_e... |
1533 |
} |
e67f86b31 Add support for s... |
1534 1535 1536 1537 1538 1539 1540 1541 1542 |
/* skd_isr_comp_limit equal zero means no limit */ if (limit) { if (++processed >= limit) { rc = 1; break; } } } |
6fbb2de5c skd: Convert seve... |
1543 |
if (skdev->state == SKD_DRVR_STATE_PAUSING && |
d4d0f5fc3 skd: Remove skd_d... |
1544 |
skd_in_flight(skdev) == 0) { |
e67f86b31 Add support for s... |
1545 1546 1547 1548 1549 1550 1551 1552 |
skdev->state = SKD_DRVR_STATE_PAUSED; wake_up_interruptible(&skdev->waitq); } return rc; } static void skd_complete_other(struct skd_device *skdev, |
85e34112c skd: Remove super... |
1553 1554 |
struct fit_completion_entry_v1 *skcomp, struct fit_comp_error_info *skerr) |
e67f86b31 Add support for s... |
1555 1556 1557 1558 1559 |
{ u32 req_id = 0; u32 req_table; u32 req_slot; struct skd_special_context *skspcl; |
760b48ca9 skd: Document loc... |
1560 |
lockdep_assert_held(&skdev->lock); |
e67f86b31 Add support for s... |
1561 1562 1563 |
req_id = skcomp->tag; req_table = req_id & SKD_ID_TABLE_MASK; req_slot = req_id & SKD_ID_SLOT_MASK; |
f98806d61 skd: Switch from ... |
1564 1565 1566 |
dev_dbg(&skdev->pdev->dev, "table=0x%x id=0x%x slot=%d ", req_table, req_id, req_slot); |
e67f86b31 Add support for s... |
1567 1568 1569 1570 1571 1572 1573 1574 1575 |
/* * Based on the request id, determine how to dispatch this completion. * This swich/case is finding the good cases and forwarding the * completion entry. Errors are reported below the switch. */ switch (req_table) { case SKD_ID_RW_REQUEST: /* |
e1d06f2d8 skd: Fix a functi... |
1576 |
* The caller, skd_isr_completion_posted() above, |
e67f86b31 Add support for s... |
1577 1578 1579 1580 |
* handles r/w requests. The only way we get here * is if the req_slot is out of bounds. */ break; |
e67f86b31 Add support for s... |
1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 |
case SKD_ID_INTERNAL: if (req_slot == 0) { skspcl = &skdev->internal_skspcl; if (skspcl->req.id == req_id && skspcl->req.state == SKD_REQ_STATE_BUSY) { skd_complete_internal(skdev, skcomp, skerr, skspcl); return; } } break; case SKD_ID_FIT_MSG: /* * These id's should never appear in a completion record. */ break; default: /* * These id's should never appear anywhere; */ break; } /* * If we get here it is a bad or stale id. */ } |
e67f86b31 Add support for s... |
1610 1611 |
static void skd_reset_skcomp(struct skd_device *skdev) { |
6f7c76753 skd: Introduce SK... |
1612 |
memset(skdev->skcomp_table, 0, SKD_SKCOMP_SIZE); |
e67f86b31 Add support for s... |
1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 |
skdev->skcomp_ix = 0; skdev->skcomp_cycle = 1; } /* ***************************************************************************** * INTERRUPTS ***************************************************************************** */ static void skd_completion_worker(struct work_struct *work) { struct skd_device *skdev = container_of(work, struct skd_device, completion_worker); unsigned long flags; int flush_enqueued = 0; spin_lock_irqsave(&skdev->lock, flags); /* * pass in limit=0, which means no limit.. * process everything in compq */ skd_isr_completion_posted(skdev, 0, &flush_enqueued); |
ca33dd929 skd: Convert to b... |
1637 |
schedule_work(&skdev->start_queue); |
e67f86b31 Add support for s... |
1638 1639 1640 1641 1642 |
spin_unlock_irqrestore(&skdev->lock, flags); } static void skd_isr_msg_from_dev(struct skd_device *skdev); |
41c9499b2 skd: fix function... |
1643 1644 |
static irqreturn_t skd_isr(int irq, void *ptr) |
e67f86b31 Add support for s... |
1645 |
{ |
1cd3c1aba skd: Make the skd... |
1646 |
struct skd_device *skdev = ptr; |
e67f86b31 Add support for s... |
1647 1648 1649 1650 1651 |
u32 intstat; u32 ack; int rc = 0; int deferred = 0; int flush_enqueued = 0; |
e67f86b31 Add support for s... |
1652 1653 1654 1655 1656 1657 1658 |
spin_lock(&skdev->lock); for (;; ) { intstat = SKD_READL(skdev, FIT_INT_STATUS_HOST); ack = FIT_INT_DEF_MASK; ack &= intstat; |
f98806d61 skd: Switch from ... |
1659 1660 1661 |
dev_dbg(&skdev->pdev->dev, "intstat=0x%x ack=0x%x ", intstat, ack); |
e67f86b31 Add support for s... |
1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 |
/* As long as there is an int pending on device, keep * running loop. When none, get out, but if we've never * done any processing, call completion handler? */ if (ack == 0) { /* No interrupts on device, but run the completion * processor anyway? */ if (rc == 0) if (likely (skdev->state == SKD_DRVR_STATE_ONLINE)) deferred = 1; break; } rc = IRQ_HANDLED; SKD_WRITEL(skdev, ack, FIT_INT_STATUS_HOST); if (likely((skdev->state != SKD_DRVR_STATE_LOAD) && (skdev->state != SKD_DRVR_STATE_STOPPING))) { if (intstat & FIT_ISH_COMPLETION_POSTED) { /* * If we have already deferred completion * processing, don't bother running it again */ if (deferred == 0) deferred = skd_isr_completion_posted(skdev, skd_isr_comp_limit, &flush_enqueued); } if (intstat & FIT_ISH_FW_STATE_CHANGE) { skd_isr_fwstate(skdev); if (skdev->state == SKD_DRVR_STATE_FAULT || skdev->state == SKD_DRVR_STATE_DISAPPEARED) { spin_unlock(&skdev->lock); return rc; } } if (intstat & FIT_ISH_MSG_FROM_DEV) skd_isr_msg_from_dev(skdev); } } if (unlikely(flush_enqueued)) |
ca33dd929 skd: Convert to b... |
1711 |
schedule_work(&skdev->start_queue); |
e67f86b31 Add support for s... |
1712 1713 1714 1715 |
if (deferred) schedule_work(&skdev->completion_worker); else if (!flush_enqueued) |
ca33dd929 skd: Convert to b... |
1716 |
schedule_work(&skdev->start_queue); |
e67f86b31 Add support for s... |
1717 1718 1719 1720 1721 |
spin_unlock(&skdev->lock); return rc; } |
e67f86b31 Add support for s... |
1722 1723 1724 |
static void skd_drive_fault(struct skd_device *skdev) { skdev->state = SKD_DRVR_STATE_FAULT; |
f98806d61 skd: Switch from ... |
1725 1726 |
dev_err(&skdev->pdev->dev, "Drive FAULT "); |
e67f86b31 Add support for s... |
1727 1728 1729 1730 1731 |
} static void skd_drive_disappeared(struct skd_device *skdev) { skdev->state = SKD_DRVR_STATE_DISAPPEARED; |
f98806d61 skd: Switch from ... |
1732 1733 |
dev_err(&skdev->pdev->dev, "Drive DISAPPEARED "); |
e67f86b31 Add support for s... |
1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 |
} static void skd_isr_fwstate(struct skd_device *skdev) { u32 sense; u32 state; u32 mtd; int prev_driver_state = skdev->state; sense = SKD_READL(skdev, FIT_STATUS); state = sense & FIT_SR_DRIVE_STATE_MASK; |
f98806d61 skd: Switch from ... |
1745 1746 1747 1748 |
dev_err(&skdev->pdev->dev, "s1120 state %s(%d)=>%s(%d) ", skd_drive_state_to_str(skdev->drive_state), skdev->drive_state, skd_drive_state_to_str(state), state); |
e67f86b31 Add support for s... |
1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 |
skdev->drive_state = state; switch (skdev->drive_state) { case FIT_SR_DRIVE_INIT: if (skdev->state == SKD_DRVR_STATE_PROTOCOL_MISMATCH) { skd_disable_interrupts(skdev); break; } if (skdev->state == SKD_DRVR_STATE_RESTARTING) |
79ce12a82 skd: Drop second ... |
1759 |
skd_recover_requests(skdev); |
e67f86b31 Add support for s... |
1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 |
if (skdev->state == SKD_DRVR_STATE_WAIT_BOOT) { skdev->timer_countdown = SKD_STARTING_TIMO; skdev->state = SKD_DRVR_STATE_STARTING; skd_soft_reset(skdev); break; } mtd = FIT_MXD_CONS(FIT_MTD_FITFW_INIT, 0, 0); SKD_WRITEL(skdev, mtd, FIT_MSG_TO_DEVICE); skdev->last_mtd = mtd; break; case FIT_SR_DRIVE_ONLINE: skdev->cur_max_queue_depth = skd_max_queue_depth; if (skdev->cur_max_queue_depth > skdev->dev_max_queue_depth) skdev->cur_max_queue_depth = skdev->dev_max_queue_depth; skdev->queue_low_water_mark = skdev->cur_max_queue_depth * 2 / 3 + 1; if (skdev->queue_low_water_mark < 1) skdev->queue_low_water_mark = 1; |
f98806d61 skd: Switch from ... |
1780 1781 1782 1783 1784 1785 |
dev_info(&skdev->pdev->dev, "Queue depth limit=%d dev=%d lowat=%d ", skdev->cur_max_queue_depth, skdev->dev_max_queue_depth, skdev->queue_low_water_mark); |
e67f86b31 Add support for s... |
1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 |
skd_refresh_device_data(skdev); break; case FIT_SR_DRIVE_BUSY: skdev->state = SKD_DRVR_STATE_BUSY; skdev->timer_countdown = SKD_BUSY_TIMO; skd_quiesce_dev(skdev); break; case FIT_SR_DRIVE_BUSY_SANITIZE: /* set timer for 3 seconds, we'll abort any unfinished * commands after that expires */ skdev->state = SKD_DRVR_STATE_BUSY_SANITIZE; skdev->timer_countdown = SKD_TIMER_SECONDS(3); |
ca33dd929 skd: Convert to b... |
1801 |
schedule_work(&skdev->start_queue); |
e67f86b31 Add support for s... |
1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 |
break; case FIT_SR_DRIVE_BUSY_ERASE: skdev->state = SKD_DRVR_STATE_BUSY_ERASE; skdev->timer_countdown = SKD_BUSY_TIMO; break; case FIT_SR_DRIVE_OFFLINE: skdev->state = SKD_DRVR_STATE_IDLE; break; case FIT_SR_DRIVE_SOFT_RESET: switch (skdev->state) { case SKD_DRVR_STATE_STARTING: case SKD_DRVR_STATE_RESTARTING: /* Expected by a caller of skd_soft_reset() */ break; default: skdev->state = SKD_DRVR_STATE_RESTARTING; break; } break; case FIT_SR_DRIVE_FW_BOOTING: |
f98806d61 skd: Switch from ... |
1822 1823 |
dev_dbg(&skdev->pdev->dev, "ISR FIT_SR_DRIVE_FW_BOOTING "); |
e67f86b31 Add support for s... |
1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 |
skdev->state = SKD_DRVR_STATE_WAIT_BOOT; skdev->timer_countdown = SKD_WAIT_BOOT_TIMO; break; case FIT_SR_DRIVE_DEGRADED: case FIT_SR_PCIE_LINK_DOWN: case FIT_SR_DRIVE_NEED_FW_DOWNLOAD: break; case FIT_SR_DRIVE_FAULT: skd_drive_fault(skdev); |
79ce12a82 skd: Drop second ... |
1835 |
skd_recover_requests(skdev); |
ca33dd929 skd: Convert to b... |
1836 |
schedule_work(&skdev->start_queue); |
e67f86b31 Add support for s... |
1837 1838 1839 1840 |
break; /* PCIe bus returned all Fs? */ case 0xFF: |
f98806d61 skd: Switch from ... |
1841 1842 1843 |
dev_info(&skdev->pdev->dev, "state=0x%x sense=0x%x ", state, sense); |
e67f86b31 Add support for s... |
1844 |
skd_drive_disappeared(skdev); |
79ce12a82 skd: Drop second ... |
1845 |
skd_recover_requests(skdev); |
ca33dd929 skd: Convert to b... |
1846 |
schedule_work(&skdev->start_queue); |
e67f86b31 Add support for s... |
1847 1848 1849 1850 1851 1852 1853 |
break; default: /* * Uknown FW State. Wait for a state we recognize. */ break; } |
f98806d61 skd: Switch from ... |
1854 1855 1856 1857 |
dev_err(&skdev->pdev->dev, "Driver state %s(%d)=>%s(%d) ", skd_skdev_state_to_str(prev_driver_state), prev_driver_state, skd_skdev_state_to_str(skdev->state), skdev->state); |
e67f86b31 Add support for s... |
1858 |
} |
7baa85727 blk-mq-tag: chang... |
1859 |
static bool skd_recover_request(struct request *req, void *data, bool reserved) |
e67f86b31 Add support for s... |
1860 |
{ |
ca33dd929 skd: Convert to b... |
1861 1862 |
struct skd_device *const skdev = data; struct skd_request_context *skreq = blk_mq_rq_to_pdu(req); |
e67f86b31 Add support for s... |
1863 |
|
4e54b8492 skd: Split skd_re... |
1864 |
if (skreq->state != SKD_REQ_STATE_BUSY) |
7baa85727 blk-mq-tag: chang... |
1865 |
return true; |
e67f86b31 Add support for s... |
1866 |
|
4e54b8492 skd: Split skd_re... |
1867 |
skd_log_skreq(skdev, skreq, "recover"); |
e67f86b31 Add support for s... |
1868 |
|
4e54b8492 skd: Split skd_re... |
1869 1870 1871 |
/* Release DMA resources for the request. */ if (skreq->n_sg > 0) skd_postop_sg_list(skdev, skreq); |
e67f86b31 Add support for s... |
1872 |
|
4e54b8492 skd: Split skd_re... |
1873 |
skreq->state = SKD_REQ_STATE_IDLE; |
795bc1b54 skd: Inline skd_e... |
1874 1875 |
skreq->status = BLK_STS_IOERR; blk_mq_complete_request(req); |
7baa85727 blk-mq-tag: chang... |
1876 |
return true; |
4e54b8492 skd: Split skd_re... |
1877 |
} |
e67f86b31 Add support for s... |
1878 |
|
4e54b8492 skd: Split skd_re... |
1879 1880 |
static void skd_recover_requests(struct skd_device *skdev) { |
ca33dd929 skd: Convert to b... |
1881 |
blk_mq_tagset_busy_iter(&skdev->tag_set, skd_recover_request, skdev); |
e67f86b31 Add support for s... |
1882 1883 1884 1885 1886 1887 1888 1889 1890 |
} static void skd_isr_msg_from_dev(struct skd_device *skdev) { u32 mfd; u32 mtd; u32 data; mfd = SKD_READL(skdev, FIT_MSG_FROM_DEVICE); |
f98806d61 skd: Switch from ... |
1891 1892 1893 |
dev_dbg(&skdev->pdev->dev, "mfd=0x%x last_mtd=0x%x ", mfd, skdev->last_mtd); |
e67f86b31 Add support for s... |
1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 |
/* ignore any mtd that is an ack for something we didn't send */ if (FIT_MXD_TYPE(mfd) != FIT_MXD_TYPE(skdev->last_mtd)) return; switch (FIT_MXD_TYPE(mfd)) { case FIT_MTD_FITFW_INIT: skdev->proto_ver = FIT_PROTOCOL_MAJOR_VER(mfd); if (skdev->proto_ver != FIT_PROTOCOL_VERSION_1) { |
f98806d61 skd: Switch from ... |
1904 1905 1906 1907 1908 1909 1910 |
dev_err(&skdev->pdev->dev, "protocol mismatch "); dev_err(&skdev->pdev->dev, " got=%d support=%d ", skdev->proto_ver, FIT_PROTOCOL_VERSION_1); dev_err(&skdev->pdev->dev, " please upgrade driver "); |
e67f86b31 Add support for s... |
1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 |
skdev->state = SKD_DRVR_STATE_PROTOCOL_MISMATCH; skd_soft_reset(skdev); break; } mtd = FIT_MXD_CONS(FIT_MTD_GET_CMDQ_DEPTH, 0, 0); SKD_WRITEL(skdev, mtd, FIT_MSG_TO_DEVICE); skdev->last_mtd = mtd; break; case FIT_MTD_GET_CMDQ_DEPTH: skdev->dev_max_queue_depth = FIT_MXD_DATA(mfd); mtd = FIT_MXD_CONS(FIT_MTD_SET_COMPQ_DEPTH, 0, SKD_N_COMPLETION_ENTRY); SKD_WRITEL(skdev, mtd, FIT_MSG_TO_DEVICE); skdev->last_mtd = mtd; break; case FIT_MTD_SET_COMPQ_DEPTH: SKD_WRITEQ(skdev, skdev->cq_dma_address, FIT_MSG_TO_DEVICE_ARG); mtd = FIT_MXD_CONS(FIT_MTD_SET_COMPQ_ADDR, 0, 0); SKD_WRITEL(skdev, mtd, FIT_MSG_TO_DEVICE); skdev->last_mtd = mtd; break; case FIT_MTD_SET_COMPQ_ADDR: skd_reset_skcomp(skdev); mtd = FIT_MXD_CONS(FIT_MTD_CMD_LOG_HOST_ID, 0, skdev->devno); SKD_WRITEL(skdev, mtd, FIT_MSG_TO_DEVICE); skdev->last_mtd = mtd; break; case FIT_MTD_CMD_LOG_HOST_ID: |
474f5da23 skd: use ktime_ge... |
1943 1944 |
/* hardware interface overflows in y2106 */ skdev->connect_time_stamp = (u32)ktime_get_real_seconds(); |
e67f86b31 Add support for s... |
1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 |
data = skdev->connect_time_stamp & 0xFFFF; mtd = FIT_MXD_CONS(FIT_MTD_CMD_LOG_TIME_STAMP_LO, 0, data); SKD_WRITEL(skdev, mtd, FIT_MSG_TO_DEVICE); skdev->last_mtd = mtd; break; case FIT_MTD_CMD_LOG_TIME_STAMP_LO: skdev->drive_jiffies = FIT_MXD_DATA(mfd); data = (skdev->connect_time_stamp >> 16) & 0xFFFF; mtd = FIT_MXD_CONS(FIT_MTD_CMD_LOG_TIME_STAMP_HI, 0, data); SKD_WRITEL(skdev, mtd, FIT_MSG_TO_DEVICE); skdev->last_mtd = mtd; break; case FIT_MTD_CMD_LOG_TIME_STAMP_HI: skdev->drive_jiffies |= (FIT_MXD_DATA(mfd) << 16); mtd = FIT_MXD_CONS(FIT_MTD_ARM_QUEUE, 0, 0); SKD_WRITEL(skdev, mtd, FIT_MSG_TO_DEVICE); skdev->last_mtd = mtd; |
f98806d61 skd: Switch from ... |
1964 1965 1966 |
dev_err(&skdev->pdev->dev, "Time sync driver=0x%x device=0x%x ", skdev->connect_time_stamp, skdev->drive_jiffies); |
e67f86b31 Add support for s... |
1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 |
break; case FIT_MTD_ARM_QUEUE: skdev->last_mtd = 0; /* * State should be, or soon will be, FIT_SR_DRIVE_ONLINE. */ break; default: break; } } static void skd_disable_interrupts(struct skd_device *skdev) { u32 sense; sense = SKD_READL(skdev, FIT_CONTROL); sense &= ~FIT_CR_ENABLE_INTERRUPTS; SKD_WRITEL(skdev, sense, FIT_CONTROL); |
f98806d61 skd: Switch from ... |
1988 1989 |
dev_dbg(&skdev->pdev->dev, "sense 0x%x ", sense); |
e67f86b31 Add support for s... |
1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 |
/* Note that the 1s is written. A 1-bit means * disable, a 0 means enable. */ SKD_WRITEL(skdev, ~0, FIT_INT_MASK_HOST); } static void skd_enable_interrupts(struct skd_device *skdev) { u32 val; /* unmask interrupts first */ val = FIT_ISH_FW_STATE_CHANGE + FIT_ISH_COMPLETION_POSTED + FIT_ISH_MSG_FROM_DEV; /* Note that the compliment of mask is written. A 1-bit means * disable, a 0 means enable. */ SKD_WRITEL(skdev, ~val, FIT_INT_MASK_HOST); |
f98806d61 skd: Switch from ... |
2008 2009 |
dev_dbg(&skdev->pdev->dev, "interrupt mask=0x%x ", ~val); |
e67f86b31 Add support for s... |
2010 2011 2012 |
val = SKD_READL(skdev, FIT_CONTROL); val |= FIT_CR_ENABLE_INTERRUPTS; |
f98806d61 skd: Switch from ... |
2013 2014 |
dev_dbg(&skdev->pdev->dev, "control=0x%x ", val); |
e67f86b31 Add support for s... |
2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 |
SKD_WRITEL(skdev, val, FIT_CONTROL); } /* ***************************************************************************** * START, STOP, RESTART, QUIESCE, UNQUIESCE ***************************************************************************** */ static void skd_soft_reset(struct skd_device *skdev) { u32 val; val = SKD_READL(skdev, FIT_CONTROL); val |= (FIT_CR_SOFT_RESET); |
f98806d61 skd: Switch from ... |
2030 2031 |
dev_dbg(&skdev->pdev->dev, "control=0x%x ", val); |
e67f86b31 Add support for s... |
2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 |
SKD_WRITEL(skdev, val, FIT_CONTROL); } static void skd_start_device(struct skd_device *skdev) { unsigned long flags; u32 sense; u32 state; spin_lock_irqsave(&skdev->lock, flags); /* ack all ghost interrupts */ SKD_WRITEL(skdev, FIT_INT_DEF_MASK, FIT_INT_STATUS_HOST); sense = SKD_READL(skdev, FIT_STATUS); |
f98806d61 skd: Switch from ... |
2047 2048 |
dev_dbg(&skdev->pdev->dev, "initial status=0x%x ", sense); |
e67f86b31 Add support for s... |
2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 |
state = sense & FIT_SR_DRIVE_STATE_MASK; skdev->drive_state = state; skdev->last_mtd = 0; skdev->state = SKD_DRVR_STATE_STARTING; skdev->timer_countdown = SKD_STARTING_TIMO; skd_enable_interrupts(skdev); switch (skdev->drive_state) { case FIT_SR_DRIVE_OFFLINE: |
f98806d61 skd: Switch from ... |
2061 2062 |
dev_err(&skdev->pdev->dev, "Drive offline... "); |
e67f86b31 Add support for s... |
2063 2064 2065 |
break; case FIT_SR_DRIVE_FW_BOOTING: |
f98806d61 skd: Switch from ... |
2066 2067 |
dev_dbg(&skdev->pdev->dev, "FIT_SR_DRIVE_FW_BOOTING "); |
e67f86b31 Add support for s... |
2068 2069 2070 2071 2072 |
skdev->state = SKD_DRVR_STATE_WAIT_BOOT; skdev->timer_countdown = SKD_WAIT_BOOT_TIMO; break; case FIT_SR_DRIVE_BUSY_SANITIZE: |
f98806d61 skd: Switch from ... |
2073 2074 |
dev_info(&skdev->pdev->dev, "Start: BUSY_SANITIZE "); |
e67f86b31 Add support for s... |
2075 2076 2077 2078 2079 |
skdev->state = SKD_DRVR_STATE_BUSY_SANITIZE; skdev->timer_countdown = SKD_STARTED_BUSY_TIMO; break; case FIT_SR_DRIVE_BUSY_ERASE: |
f98806d61 skd: Switch from ... |
2080 2081 |
dev_info(&skdev->pdev->dev, "Start: BUSY_ERASE "); |
e67f86b31 Add support for s... |
2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 |
skdev->state = SKD_DRVR_STATE_BUSY_ERASE; skdev->timer_countdown = SKD_STARTED_BUSY_TIMO; break; case FIT_SR_DRIVE_INIT: case FIT_SR_DRIVE_ONLINE: skd_soft_reset(skdev); break; case FIT_SR_DRIVE_BUSY: |
f98806d61 skd: Switch from ... |
2092 2093 |
dev_err(&skdev->pdev->dev, "Drive Busy... "); |
e67f86b31 Add support for s... |
2094 2095 2096 2097 2098 |
skdev->state = SKD_DRVR_STATE_BUSY; skdev->timer_countdown = SKD_STARTED_BUSY_TIMO; break; case FIT_SR_DRIVE_SOFT_RESET: |
f98806d61 skd: Switch from ... |
2099 2100 |
dev_err(&skdev->pdev->dev, "drive soft reset in prog "); |
e67f86b31 Add support for s... |
2101 2102 2103 2104 2105 2106 2107 2108 2109 |
break; case FIT_SR_DRIVE_FAULT: /* Fault state is bad...soft reset won't do it... * Hard reset, maybe, but does it work on device? * For now, just fault so the system doesn't hang. */ skd_drive_fault(skdev); /*start the queue so we can respond with error to requests */ |
f98806d61 skd: Switch from ... |
2110 2111 |
dev_dbg(&skdev->pdev->dev, "starting queue "); |
ca33dd929 skd: Convert to b... |
2112 |
schedule_work(&skdev->start_queue); |
e67f86b31 Add support for s... |
2113 2114 2115 2116 2117 2118 2119 2120 2121 |
skdev->gendisk_on = -1; wake_up_interruptible(&skdev->waitq); break; case 0xFF: /* Most likely the device isn't there or isn't responding * to the BAR1 addresses. */ skd_drive_disappeared(skdev); /*start the queue so we can respond with error to requests */ |
f98806d61 skd: Switch from ... |
2122 2123 2124 |
dev_dbg(&skdev->pdev->dev, "starting queue to error-out reqs "); |
ca33dd929 skd: Convert to b... |
2125 |
schedule_work(&skdev->start_queue); |
e67f86b31 Add support for s... |
2126 2127 2128 2129 2130 |
skdev->gendisk_on = -1; wake_up_interruptible(&skdev->waitq); break; default: |
f98806d61 skd: Switch from ... |
2131 2132 2133 |
dev_err(&skdev->pdev->dev, "Start: unknown state %x ", skdev->drive_state); |
e67f86b31 Add support for s... |
2134 2135 2136 2137 |
break; } state = SKD_READL(skdev, FIT_CONTROL); |
f98806d61 skd: Switch from ... |
2138 2139 |
dev_dbg(&skdev->pdev->dev, "FIT Control Status=0x%x ", state); |
e67f86b31 Add support for s... |
2140 2141 |
state = SKD_READL(skdev, FIT_INT_STATUS_HOST); |
f98806d61 skd: Switch from ... |
2142 2143 |
dev_dbg(&skdev->pdev->dev, "Intr Status=0x%x ", state); |
e67f86b31 Add support for s... |
2144 2145 |
state = SKD_READL(skdev, FIT_INT_MASK_HOST); |
f98806d61 skd: Switch from ... |
2146 2147 |
dev_dbg(&skdev->pdev->dev, "Intr Mask=0x%x ", state); |
e67f86b31 Add support for s... |
2148 2149 |
state = SKD_READL(skdev, FIT_MSG_FROM_DEVICE); |
f98806d61 skd: Switch from ... |
2150 2151 |
dev_dbg(&skdev->pdev->dev, "Msg from Dev=0x%x ", state); |
e67f86b31 Add support for s... |
2152 2153 |
state = SKD_READL(skdev, FIT_HW_VERSION); |
f98806d61 skd: Switch from ... |
2154 2155 |
dev_dbg(&skdev->pdev->dev, "HW version=0x%x ", state); |
e67f86b31 Add support for s... |
2156 2157 2158 2159 2160 2161 2162 2163 2164 2165 2166 2167 2168 2169 |
spin_unlock_irqrestore(&skdev->lock, flags); } static void skd_stop_device(struct skd_device *skdev) { unsigned long flags; struct skd_special_context *skspcl = &skdev->internal_skspcl; u32 dev_state; int i; spin_lock_irqsave(&skdev->lock, flags); if (skdev->state != SKD_DRVR_STATE_ONLINE) { |
f98806d61 skd: Switch from ... |
2170 2171 |
dev_err(&skdev->pdev->dev, "%s not online no sync ", __func__); |
e67f86b31 Add support for s... |
2172 2173 2174 2175 |
goto stop_out; } if (skspcl->req.state != SKD_REQ_STATE_IDLE) { |
f98806d61 skd: Switch from ... |
2176 2177 |
dev_err(&skdev->pdev->dev, "%s no special ", __func__); |
e67f86b31 Add support for s... |
2178 2179 2180 2181 2182 2183 2184 2185 2186 2187 2188 2189 2190 2191 2192 2193 2194 |
goto stop_out; } skdev->state = SKD_DRVR_STATE_SYNCING; skdev->sync_done = 0; skd_send_internal_skspcl(skdev, skspcl, SYNCHRONIZE_CACHE); spin_unlock_irqrestore(&skdev->lock, flags); wait_event_interruptible_timeout(skdev->waitq, (skdev->sync_done), (10 * HZ)); spin_lock_irqsave(&skdev->lock, flags); switch (skdev->sync_done) { case 0: |
f98806d61 skd: Switch from ... |
2195 2196 |
dev_err(&skdev->pdev->dev, "%s no sync ", __func__); |
e67f86b31 Add support for s... |
2197 2198 |
break; case 1: |
f98806d61 skd: Switch from ... |
2199 2200 |
dev_err(&skdev->pdev->dev, "%s sync done ", __func__); |
e67f86b31 Add support for s... |
2201 2202 |
break; default: |
f98806d61 skd: Switch from ... |
2203 2204 |
dev_err(&skdev->pdev->dev, "%s sync error ", __func__); |
e67f86b31 Add support for s... |
2205 2206 2207 2208 2209 2210 2211 2212 2213 2214 2215 2216 2217 2218 2219 2220 2221 2222 2223 2224 2225 2226 2227 2228 2229 2230 2231 2232 2233 |
} stop_out: skdev->state = SKD_DRVR_STATE_STOPPING; spin_unlock_irqrestore(&skdev->lock, flags); skd_kill_timer(skdev); spin_lock_irqsave(&skdev->lock, flags); skd_disable_interrupts(skdev); /* ensure all ints on device are cleared */ /* soft reset the device to unload with a clean slate */ SKD_WRITEL(skdev, FIT_INT_DEF_MASK, FIT_INT_STATUS_HOST); SKD_WRITEL(skdev, FIT_CR_SOFT_RESET, FIT_CONTROL); spin_unlock_irqrestore(&skdev->lock, flags); /* poll every 100ms, 1 second timeout */ for (i = 0; i < 10; i++) { dev_state = SKD_READL(skdev, FIT_STATUS) & FIT_SR_DRIVE_STATE_MASK; if (dev_state == FIT_SR_DRIVE_INIT) break; set_current_state(TASK_INTERRUPTIBLE); schedule_timeout(msecs_to_jiffies(100)); } if (dev_state != FIT_SR_DRIVE_INIT) |
f98806d61 skd: Switch from ... |
2234 2235 2236 |
dev_err(&skdev->pdev->dev, "%s state error 0x%02x ", __func__, dev_state); |
e67f86b31 Add support for s... |
2237 2238 2239 2240 2241 2242 2243 2244 2245 2246 2247 |
} /* assume spinlock is held */ static void skd_restart_device(struct skd_device *skdev) { u32 state; /* ack all ghost interrupts */ SKD_WRITEL(skdev, FIT_INT_DEF_MASK, FIT_INT_STATUS_HOST); state = SKD_READL(skdev, FIT_STATUS); |
f98806d61 skd: Switch from ... |
2248 2249 |
dev_dbg(&skdev->pdev->dev, "drive status=0x%x ", state); |
e67f86b31 Add support for s... |
2250 2251 2252 2253 2254 2255 2256 2257 2258 2259 2260 2261 2262 2263 2264 2265 2266 2267 2268 |
state &= FIT_SR_DRIVE_STATE_MASK; skdev->drive_state = state; skdev->last_mtd = 0; skdev->state = SKD_DRVR_STATE_RESTARTING; skdev->timer_countdown = SKD_RESTARTING_TIMO; skd_soft_reset(skdev); } /* assume spinlock is held */ static int skd_quiesce_dev(struct skd_device *skdev) { int rc = 0; switch (skdev->state) { case SKD_DRVR_STATE_BUSY: case SKD_DRVR_STATE_BUSY_IMMINENT: |
f98806d61 skd: Switch from ... |
2269 2270 |
dev_dbg(&skdev->pdev->dev, "stopping queue "); |
ca33dd929 skd: Convert to b... |
2271 |
blk_mq_stop_hw_queues(skdev->queue); |
e67f86b31 Add support for s... |
2272 2273 2274 2275 2276 2277 2278 2279 2280 2281 2282 |
break; case SKD_DRVR_STATE_ONLINE: case SKD_DRVR_STATE_STOPPING: case SKD_DRVR_STATE_SYNCING: case SKD_DRVR_STATE_PAUSING: case SKD_DRVR_STATE_PAUSED: case SKD_DRVR_STATE_STARTING: case SKD_DRVR_STATE_RESTARTING: case SKD_DRVR_STATE_RESUMING: default: rc = -EINVAL; |
f98806d61 skd: Switch from ... |
2283 2284 2285 |
dev_dbg(&skdev->pdev->dev, "state [%d] not implemented ", skdev->state); |
e67f86b31 Add support for s... |
2286 2287 2288 2289 2290 2291 2292 2293 2294 2295 2296 |
} return rc; } /* assume spinlock is held */ static int skd_unquiesce_dev(struct skd_device *skdev) { int prev_driver_state = skdev->state; skd_log_skdev(skdev, "unquiesce"); if (skdev->state == SKD_DRVR_STATE_ONLINE) { |
f98806d61 skd: Switch from ... |
2297 2298 |
dev_dbg(&skdev->pdev->dev, "**** device already ONLINE "); |
e67f86b31 Add support for s... |
2299 2300 2301 2302 2303 2304 2305 2306 2307 2308 2309 2310 |
return 0; } if (skdev->drive_state != FIT_SR_DRIVE_ONLINE) { /* * If there has been an state change to other than * ONLINE, we will rely on controller state change * to come back online and restart the queue. * The BUSY state means that driver is ready to * continue normal processing but waiting for controller * to become available. */ skdev->state = SKD_DRVR_STATE_BUSY; |
f98806d61 skd: Switch from ... |
2311 2312 |
dev_dbg(&skdev->pdev->dev, "drive BUSY state "); |
e67f86b31 Add support for s... |
2313 2314 2315 2316 2317 2318 2319 2320 2321 2322 2323 2324 2325 2326 2327 2328 2329 2330 |
return 0; } /* * Drive has just come online, driver is either in startup, * paused performing a task, or bust waiting for hardware. */ switch (skdev->state) { case SKD_DRVR_STATE_PAUSED: case SKD_DRVR_STATE_BUSY: case SKD_DRVR_STATE_BUSY_IMMINENT: case SKD_DRVR_STATE_BUSY_ERASE: case SKD_DRVR_STATE_STARTING: case SKD_DRVR_STATE_RESTARTING: case SKD_DRVR_STATE_FAULT: case SKD_DRVR_STATE_IDLE: case SKD_DRVR_STATE_LOAD: skdev->state = SKD_DRVR_STATE_ONLINE; |
f98806d61 skd: Switch from ... |
2331 2332 2333 2334 2335 2336 2337 2338 2339 2340 2341 2342 |
dev_err(&skdev->pdev->dev, "Driver state %s(%d)=>%s(%d) ", skd_skdev_state_to_str(prev_driver_state), prev_driver_state, skd_skdev_state_to_str(skdev->state), skdev->state); dev_dbg(&skdev->pdev->dev, "**** device ONLINE...starting block queue "); dev_dbg(&skdev->pdev->dev, "starting queue "); dev_info(&skdev->pdev->dev, "STEC s1120 ONLINE "); |
ca33dd929 skd: Convert to b... |
2343 |
schedule_work(&skdev->start_queue); |
e67f86b31 Add support for s... |
2344 2345 2346 2347 2348 2349 |
skdev->gendisk_on = 1; wake_up_interruptible(&skdev->waitq); break; case SKD_DRVR_STATE_DISAPPEARED: default: |
f98806d61 skd: Switch from ... |
2350 2351 2352 2353 |
dev_dbg(&skdev->pdev->dev, "**** driver state %d, not implemented ", skdev->state); |
e67f86b31 Add support for s... |
2354 2355 2356 2357 2358 2359 2360 2361 2362 2363 2364 2365 2366 2367 2368 2369 2370 |
return -EBUSY; } return 0; } /* ***************************************************************************** * PCIe MSI/MSI-X INTERRUPT HANDLERS ***************************************************************************** */ static irqreturn_t skd_reserved_isr(int irq, void *skd_host_data) { struct skd_device *skdev = skd_host_data; unsigned long flags; spin_lock_irqsave(&skdev->lock, flags); |
f98806d61 skd: Switch from ... |
2371 2372 2373 2374 2375 2376 |
dev_dbg(&skdev->pdev->dev, "MSIX = 0x%x ", SKD_READL(skdev, FIT_INT_STATUS_HOST)); dev_err(&skdev->pdev->dev, "MSIX reserved irq %d = 0x%x ", irq, SKD_READL(skdev, FIT_INT_STATUS_HOST)); |
e67f86b31 Add support for s... |
2377 2378 2379 2380 2381 2382 2383 2384 2385 2386 2387 |
SKD_WRITEL(skdev, FIT_INT_RESERVED_MASK, FIT_INT_STATUS_HOST); spin_unlock_irqrestore(&skdev->lock, flags); return IRQ_HANDLED; } static irqreturn_t skd_statec_isr(int irq, void *skd_host_data) { struct skd_device *skdev = skd_host_data; unsigned long flags; spin_lock_irqsave(&skdev->lock, flags); |
f98806d61 skd: Switch from ... |
2388 2389 2390 |
dev_dbg(&skdev->pdev->dev, "MSIX = 0x%x ", SKD_READL(skdev, FIT_INT_STATUS_HOST)); |
e67f86b31 Add support for s... |
2391 2392 2393 2394 2395 2396 2397 2398 2399 2400 2401 2402 2403 2404 |
SKD_WRITEL(skdev, FIT_ISH_FW_STATE_CHANGE, FIT_INT_STATUS_HOST); skd_isr_fwstate(skdev); spin_unlock_irqrestore(&skdev->lock, flags); return IRQ_HANDLED; } static irqreturn_t skd_comp_q(int irq, void *skd_host_data) { struct skd_device *skdev = skd_host_data; unsigned long flags; int flush_enqueued = 0; int deferred; spin_lock_irqsave(&skdev->lock, flags); |
f98806d61 skd: Switch from ... |
2405 2406 2407 |
dev_dbg(&skdev->pdev->dev, "MSIX = 0x%x ", SKD_READL(skdev, FIT_INT_STATUS_HOST)); |
e67f86b31 Add support for s... |
2408 2409 2410 |
SKD_WRITEL(skdev, FIT_ISH_COMPLETION_POSTED, FIT_INT_STATUS_HOST); deferred = skd_isr_completion_posted(skdev, skd_isr_comp_limit, &flush_enqueued); |
e67f86b31 Add support for s... |
2411 |
if (flush_enqueued) |
ca33dd929 skd: Convert to b... |
2412 |
schedule_work(&skdev->start_queue); |
e67f86b31 Add support for s... |
2413 2414 2415 2416 |
if (deferred) schedule_work(&skdev->completion_worker); else if (!flush_enqueued) |
ca33dd929 skd: Convert to b... |
2417 |
schedule_work(&skdev->start_queue); |
e67f86b31 Add support for s... |
2418 2419 2420 2421 2422 2423 2424 2425 2426 2427 2428 2429 |
spin_unlock_irqrestore(&skdev->lock, flags); return IRQ_HANDLED; } static irqreturn_t skd_msg_isr(int irq, void *skd_host_data) { struct skd_device *skdev = skd_host_data; unsigned long flags; spin_lock_irqsave(&skdev->lock, flags); |
f98806d61 skd: Switch from ... |
2430 2431 2432 |
dev_dbg(&skdev->pdev->dev, "MSIX = 0x%x ", SKD_READL(skdev, FIT_INT_STATUS_HOST)); |
e67f86b31 Add support for s... |
2433 2434 2435 2436 2437 2438 2439 2440 2441 2442 2443 2444 |
SKD_WRITEL(skdev, FIT_ISH_MSG_FROM_DEV, FIT_INT_STATUS_HOST); skd_isr_msg_from_dev(skdev); spin_unlock_irqrestore(&skdev->lock, flags); return IRQ_HANDLED; } static irqreturn_t skd_qfull_isr(int irq, void *skd_host_data) { struct skd_device *skdev = skd_host_data; unsigned long flags; spin_lock_irqsave(&skdev->lock, flags); |
f98806d61 skd: Switch from ... |
2445 2446 2447 |
dev_dbg(&skdev->pdev->dev, "MSIX = 0x%x ", SKD_READL(skdev, FIT_INT_STATUS_HOST)); |
e67f86b31 Add support for s... |
2448 2449 2450 2451 2452 2453 2454 2455 2456 2457 2458 2459 |
SKD_WRITEL(skdev, FIT_INT_QUEUE_FULL, FIT_INT_STATUS_HOST); spin_unlock_irqrestore(&skdev->lock, flags); return IRQ_HANDLED; } /* ***************************************************************************** * PCIe MSI/MSI-X SETUP ***************************************************************************** */ struct skd_msix_entry { |
e67f86b31 Add support for s... |
2460 2461 2462 2463 2464 2465 2466 2467 2468 2469 2470 2471 2472 2473 2474 2475 2476 2477 2478 2479 2480 2481 2482 2483 2484 2485 2486 |
char isr_name[30]; }; struct skd_init_msix_entry { const char *name; irq_handler_t handler; }; #define SKD_MAX_MSIX_COUNT 13 #define SKD_MIN_MSIX_COUNT 7 #define SKD_BASE_MSIX_IRQ 4 static struct skd_init_msix_entry msix_entries[SKD_MAX_MSIX_COUNT] = { { "(DMA 0)", skd_reserved_isr }, { "(DMA 1)", skd_reserved_isr }, { "(DMA 2)", skd_reserved_isr }, { "(DMA 3)", skd_reserved_isr }, { "(State Change)", skd_statec_isr }, { "(COMPL_Q)", skd_comp_q }, { "(MSG)", skd_msg_isr }, { "(Reserved)", skd_reserved_isr }, { "(Reserved)", skd_reserved_isr }, { "(Queue Full 0)", skd_qfull_isr }, { "(Queue Full 1)", skd_qfull_isr }, { "(Queue Full 2)", skd_qfull_isr }, { "(Queue Full 3)", skd_qfull_isr }, }; |
e67f86b31 Add support for s... |
2487 2488 |
static int skd_acquire_msix(struct skd_device *skdev) { |
a9df86256 skd: Use pci_enab... |
2489 |
int i, rc; |
46817769e skd: Fix incomple... |
2490 |
struct pci_dev *pdev = skdev->pdev; |
e67f86b31 Add support for s... |
2491 |
|
180b0ae77 skd: use pci_allo... |
2492 2493 2494 |
rc = pci_alloc_irq_vectors(pdev, SKD_MAX_MSIX_COUNT, SKD_MAX_MSIX_COUNT, PCI_IRQ_MSIX); if (rc < 0) { |
f98806d61 skd: Switch from ... |
2495 2496 |
dev_err(&skdev->pdev->dev, "failed to enable MSI-X %d ", rc); |
3bc8492f0 skd: fix msix err... |
2497 |
goto out; |
e67f86b31 Add support for s... |
2498 |
} |
46817769e skd: Fix incomple... |
2499 |
|
180b0ae77 skd: use pci_allo... |
2500 2501 |
skdev->msix_entries = kcalloc(SKD_MAX_MSIX_COUNT, sizeof(struct skd_msix_entry), GFP_KERNEL); |
e67f86b31 Add support for s... |
2502 2503 |
if (!skdev->msix_entries) { rc = -ENOMEM; |
f98806d61 skd: Switch from ... |
2504 2505 |
dev_err(&skdev->pdev->dev, "msix table allocation error "); |
3bc8492f0 skd: fix msix err... |
2506 |
goto out; |
e67f86b31 Add support for s... |
2507 |
} |
e67f86b31 Add support for s... |
2508 |
/* Enable MSI-X vectors for the base queue */ |
180b0ae77 skd: use pci_allo... |
2509 2510 |
for (i = 0; i < SKD_MAX_MSIX_COUNT; i++) { struct skd_msix_entry *qentry = &skdev->msix_entries[i]; |
e67f86b31 Add support for s... |
2511 2512 2513 |
snprintf(qentry->isr_name, sizeof(qentry->isr_name), "%s%d-msix %s", DRV_NAME, skdev->devno, msix_entries[i].name); |
180b0ae77 skd: use pci_allo... |
2514 2515 2516 2517 2518 |
rc = devm_request_irq(&skdev->pdev->dev, pci_irq_vector(skdev->pdev, i), msix_entries[i].handler, 0, qentry->isr_name, skdev); |
e67f86b31 Add support for s... |
2519 |
if (rc) { |
f98806d61 skd: Switch from ... |
2520 2521 2522 2523 |
dev_err(&skdev->pdev->dev, "Unable to register(%d) MSI-X handler %d: %s ", rc, i, qentry->isr_name); |
e67f86b31 Add support for s... |
2524 |
goto msix_out; |
e67f86b31 Add support for s... |
2525 2526 |
} } |
180b0ae77 skd: use pci_allo... |
2527 |
|
f98806d61 skd: Switch from ... |
2528 2529 2530 |
dev_dbg(&skdev->pdev->dev, "%d msix irq(s) enabled ", SKD_MAX_MSIX_COUNT); |
e67f86b31 Add support for s... |
2531 2532 2533 |
return 0; msix_out: |
180b0ae77 skd: use pci_allo... |
2534 2535 |
while (--i >= 0) devm_free_irq(&pdev->dev, pci_irq_vector(pdev, i), skdev); |
3bc8492f0 skd: fix msix err... |
2536 |
out: |
180b0ae77 skd: use pci_allo... |
2537 2538 |
kfree(skdev->msix_entries); skdev->msix_entries = NULL; |
e67f86b31 Add support for s... |
2539 2540 2541 2542 2543 |
return rc; } static int skd_acquire_irq(struct skd_device *skdev) { |
180b0ae77 skd: use pci_allo... |
2544 2545 |
struct pci_dev *pdev = skdev->pdev; unsigned int irq_flag = PCI_IRQ_LEGACY; |
e67f86b31 Add support for s... |
2546 |
int rc; |
e67f86b31 Add support for s... |
2547 |
|
180b0ae77 skd: use pci_allo... |
2548 |
if (skd_isr_type == SKD_IRQ_MSIX) { |
e67f86b31 Add support for s... |
2549 2550 |
rc = skd_acquire_msix(skdev); if (!rc) |
180b0ae77 skd: use pci_allo... |
2551 |
return 0; |
f98806d61 skd: Switch from ... |
2552 2553 2554 |
dev_err(&skdev->pdev->dev, "failed to enable MSI-X, re-trying with MSI %d ", rc); |
e67f86b31 Add support for s... |
2555 |
} |
180b0ae77 skd: use pci_allo... |
2556 2557 2558 2559 2560 2561 2562 2563 |
snprintf(skdev->isr_name, sizeof(skdev->isr_name), "%s%d", DRV_NAME, skdev->devno); if (skd_isr_type != SKD_IRQ_LEGACY) irq_flag |= PCI_IRQ_MSI; rc = pci_alloc_irq_vectors(pdev, 1, 1, irq_flag); if (rc < 0) { |
f98806d61 skd: Switch from ... |
2564 2565 2566 |
dev_err(&skdev->pdev->dev, "failed to allocate the MSI interrupt %d ", rc); |
180b0ae77 skd: use pci_allo... |
2567 2568 2569 2570 2571 2572 2573 2574 |
return rc; } rc = devm_request_irq(&pdev->dev, pdev->irq, skd_isr, pdev->msi_enabled ? 0 : IRQF_SHARED, skdev->isr_name, skdev); if (rc) { pci_free_irq_vectors(pdev); |
f98806d61 skd: Switch from ... |
2575 2576 2577 |
dev_err(&skdev->pdev->dev, "failed to allocate interrupt %d ", rc); |
180b0ae77 skd: use pci_allo... |
2578 2579 2580 2581 |
return rc; } return 0; |
e67f86b31 Add support for s... |
2582 2583 2584 2585 |
} static void skd_release_irq(struct skd_device *skdev) { |
180b0ae77 skd: use pci_allo... |
2586 2587 2588 2589 2590 2591 2592 2593 2594 2595 2596 2597 2598 2599 |
struct pci_dev *pdev = skdev->pdev; if (skdev->msix_entries) { int i; for (i = 0; i < SKD_MAX_MSIX_COUNT; i++) { devm_free_irq(&pdev->dev, pci_irq_vector(pdev, i), skdev); } kfree(skdev->msix_entries); skdev->msix_entries = NULL; } else { devm_free_irq(&pdev->dev, pdev->irq, skdev); |
e67f86b31 Add support for s... |
2600 |
} |
180b0ae77 skd: use pci_allo... |
2601 2602 |
pci_free_irq_vectors(pdev); |
e67f86b31 Add support for s... |
2603 2604 2605 2606 2607 2608 2609 |
} /* ***************************************************************************** * CONSTRUCT ***************************************************************************** */ |
a3db102de skd: Reduce memor... |
2610 2611 2612 2613 2614 2615 2616 2617 2618 2619 |
static void *skd_alloc_dma(struct skd_device *skdev, struct kmem_cache *s, dma_addr_t *dma_handle, gfp_t gfp, enum dma_data_direction dir) { struct device *dev = &skdev->pdev->dev; void *buf; buf = kmem_cache_alloc(s, gfp); if (!buf) return NULL; |
1d5187757 block: skd: fix i... |
2620 2621 |
*dma_handle = dma_map_single(dev, buf, kmem_cache_size(s), dir); |
a3db102de skd: Reduce memor... |
2622 |
if (dma_mapping_error(dev, *dma_handle)) { |
09aa97c78 skd: Use kmem_cac... |
2623 |
kmem_cache_free(s, buf); |
a3db102de skd: Reduce memor... |
2624 2625 2626 2627 2628 2629 2630 2631 2632 2633 2634 |
buf = NULL; } return buf; } static void skd_free_dma(struct skd_device *skdev, struct kmem_cache *s, void *vaddr, dma_addr_t dma_handle, enum dma_data_direction dir) { if (!vaddr) return; |
1d5187757 block: skd: fix i... |
2635 2636 |
dma_unmap_single(&skdev->pdev->dev, dma_handle, kmem_cache_size(s), dir); |
a3db102de skd: Reduce memor... |
2637 2638 |
kmem_cache_free(s, vaddr); } |
e67f86b31 Add support for s... |
2639 2640 2641 2642 |
static int skd_cons_skcomp(struct skd_device *skdev) { int rc = 0; struct fit_completion_entry_v1 *skcomp; |
e67f86b31 Add support for s... |
2643 |
|
f98806d61 skd: Switch from ... |
2644 |
dev_dbg(&skdev->pdev->dev, |
6f7c76753 skd: Introduce SK... |
2645 2646 2647 |
"comp pci_alloc, total bytes %zd entries %d ", SKD_SKCOMP_SIZE, SKD_N_COMPLETION_ENTRY); |
e67f86b31 Add support for s... |
2648 |
|
750afb08c cross-tree: phase... |
2649 2650 |
skcomp = dma_alloc_coherent(&skdev->pdev->dev, SKD_SKCOMP_SIZE, &skdev->cq_dma_address, GFP_KERNEL); |
e67f86b31 Add support for s... |
2651 2652 2653 2654 2655 |
if (skcomp == NULL) { rc = -ENOMEM; goto err_out; } |
e67f86b31 Add support for s... |
2656 2657 2658 2659 2660 2661 2662 2663 2664 2665 2666 2667 2668 |
skdev->skcomp_table = skcomp; skdev->skerr_table = (struct fit_comp_error_info *)((char *)skcomp + sizeof(*skcomp) * SKD_N_COMPLETION_ENTRY); err_out: return rc; } static int skd_cons_skmsg(struct skd_device *skdev) { int rc = 0; u32 i; |
f98806d61 skd: Switch from ... |
2669 |
dev_dbg(&skdev->pdev->dev, |
01433d0de skd: Use kcalloc(... |
2670 2671 |
"skmsg_table kcalloc, struct %lu, count %u total %lu ", |
f98806d61 skd: Switch from ... |
2672 2673 |
sizeof(struct skd_fitmsg_context), skdev->num_fitmsg_context, sizeof(struct skd_fitmsg_context) * skdev->num_fitmsg_context); |
e67f86b31 Add support for s... |
2674 |
|
01433d0de skd: Use kcalloc(... |
2675 2676 2677 |
skdev->skmsg_table = kcalloc(skdev->num_fitmsg_context, sizeof(struct skd_fitmsg_context), GFP_KERNEL); |
e67f86b31 Add support for s... |
2678 2679 2680 2681 2682 2683 2684 2685 2686 2687 2688 |
if (skdev->skmsg_table == NULL) { rc = -ENOMEM; goto err_out; } for (i = 0; i < skdev->num_fitmsg_context; i++) { struct skd_fitmsg_context *skmsg; skmsg = &skdev->skmsg_table[i]; skmsg->id = i + SKD_ID_FIT_MSG; |
138126214 skd: switch to th... |
2689 2690 2691 2692 |
skmsg->msg_buf = dma_alloc_coherent(&skdev->pdev->dev, SKD_N_FITMSG_BYTES, &skmsg->mb_dma_address, GFP_KERNEL); |
e67f86b31 Add support for s... |
2693 2694 2695 2696 |
if (skmsg->msg_buf == NULL) { rc = -ENOMEM; goto err_out; } |
6507f436f skd: Simplify the... |
2697 2698 |
WARN(((uintptr_t)skmsg->msg_buf | skmsg->mb_dma_address) & (FIT_QCMD_ALIGN - 1), |
ea870bb2a block: skd: Use %... |
2699 2700 2701 |
"not aligned: msg_buf %p mb_dma_address %pad ", skmsg->msg_buf, &skmsg->mb_dma_address); |
e67f86b31 Add support for s... |
2702 |
} |
e67f86b31 Add support for s... |
2703 2704 2705 |
err_out: return rc; } |
542d7b001 skd: reorder cons... |
2706 2707 2708 2709 2710 |
static struct fit_sg_descriptor *skd_cons_sg_list(struct skd_device *skdev, u32 n_sg, dma_addr_t *ret_dma_addr) { struct fit_sg_descriptor *sg_list; |
542d7b001 skd: reorder cons... |
2711 |
|
a3db102de skd: Reduce memor... |
2712 2713 |
sg_list = skd_alloc_dma(skdev, skdev->sglist_cache, ret_dma_addr, GFP_DMA | __GFP_ZERO, DMA_TO_DEVICE); |
542d7b001 skd: reorder cons... |
2714 2715 2716 2717 |
if (sg_list != NULL) { uint64_t dma_address = *ret_dma_addr; u32 i; |
542d7b001 skd: reorder cons... |
2718 2719 2720 2721 2722 2723 2724 2725 2726 2727 2728 |
for (i = 0; i < n_sg - 1; i++) { uint64_t ndp_off; ndp_off = (i + 1) * sizeof(struct fit_sg_descriptor); sg_list[i].next_desc_ptr = dma_address + ndp_off; } sg_list[i].next_desc_ptr = 0LL; } return sg_list; } |
5d003240f skd: Move skd_fre... |
2729 |
static void skd_free_sg_list(struct skd_device *skdev, |
a3db102de skd: Reduce memor... |
2730 |
struct fit_sg_descriptor *sg_list, |
5d003240f skd: Move skd_fre... |
2731 2732 |
dma_addr_t dma_addr) { |
5d003240f skd: Move skd_fre... |
2733 2734 |
if (WARN_ON_ONCE(!sg_list)) return; |
a3db102de skd: Reduce memor... |
2735 2736 |
skd_free_dma(skdev, skdev->sglist_cache, sg_list, dma_addr, DMA_TO_DEVICE); |
5d003240f skd: Move skd_fre... |
2737 |
} |
ca33dd929 skd: Convert to b... |
2738 2739 |
static int skd_init_request(struct blk_mq_tag_set *set, struct request *rq, unsigned int hctx_idx, unsigned int numa_node) |
e67f86b31 Add support for s... |
2740 |
{ |
ca33dd929 skd: Convert to b... |
2741 |
struct skd_device *skdev = set->driver_data; |
e7278a8b3 skd: Coalesce str... |
2742 |
struct skd_request_context *skreq = blk_mq_rq_to_pdu(rq); |
e67f86b31 Add support for s... |
2743 |
|
e7278a8b3 skd: Coalesce str... |
2744 2745 2746 2747 2748 |
skreq->state = SKD_REQ_STATE_IDLE; skreq->sg = (void *)(skreq + 1); sg_init_table(skreq->sg, skd_sgs_per_request); skreq->sksg_list = skd_cons_sg_list(skdev, skd_sgs_per_request, &skreq->sksg_dma_address); |
e67f86b31 Add support for s... |
2749 |
|
e7278a8b3 skd: Coalesce str... |
2750 2751 |
return skreq->sksg_list ? 0 : -ENOMEM; } |
e67f86b31 Add support for s... |
2752 |
|
ca33dd929 skd: Convert to b... |
2753 2754 |
static void skd_exit_request(struct blk_mq_tag_set *set, struct request *rq, unsigned int hctx_idx) |
e7278a8b3 skd: Coalesce str... |
2755 |
{ |
ca33dd929 skd: Convert to b... |
2756 |
struct skd_device *skdev = set->driver_data; |
e7278a8b3 skd: Coalesce str... |
2757 |
struct skd_request_context *skreq = blk_mq_rq_to_pdu(rq); |
e67f86b31 Add support for s... |
2758 |
|
a3db102de skd: Reduce memor... |
2759 |
skd_free_sg_list(skdev, skreq->sksg_list, skreq->sksg_dma_address); |
e67f86b31 Add support for s... |
2760 |
} |
e67f86b31 Add support for s... |
2761 2762 2763 2764 |
static int skd_cons_sksb(struct skd_device *skdev) { int rc = 0; struct skd_special_context *skspcl; |
e67f86b31 Add support for s... |
2765 2766 2767 2768 2769 |
skspcl = &skdev->internal_skspcl; skspcl->req.id = 0 + SKD_ID_INTERNAL; skspcl->req.state = SKD_REQ_STATE_IDLE; |
a3db102de skd: Reduce memor... |
2770 2771 2772 2773 |
skspcl->data_buf = skd_alloc_dma(skdev, skdev->databuf_cache, &skspcl->db_dma_address, GFP_DMA | __GFP_ZERO, DMA_BIDIRECTIONAL); |
e67f86b31 Add support for s... |
2774 2775 2776 2777 |
if (skspcl->data_buf == NULL) { rc = -ENOMEM; goto err_out; } |
a3db102de skd: Reduce memor... |
2778 2779 2780 |
skspcl->msg_buf = skd_alloc_dma(skdev, skdev->msgbuf_cache, &skspcl->mb_dma_address, GFP_DMA | __GFP_ZERO, DMA_TO_DEVICE); |
e67f86b31 Add support for s... |
2781 2782 2783 2784 |
if (skspcl->msg_buf == NULL) { rc = -ENOMEM; goto err_out; } |
e67f86b31 Add support for s... |
2785 2786 2787 2788 2789 2790 2791 2792 2793 2794 2795 2796 2797 2798 2799 |
skspcl->req.sksg_list = skd_cons_sg_list(skdev, 1, &skspcl->req.sksg_dma_address); if (skspcl->req.sksg_list == NULL) { rc = -ENOMEM; goto err_out; } if (!skd_format_internal_skspcl(skdev)) { rc = -EINVAL; goto err_out; } err_out: return rc; } |
ca33dd929 skd: Convert to b... |
2800 2801 |
static const struct blk_mq_ops skd_mq_ops = { .queue_rq = skd_mq_queue_rq, |
296cb94c9 skd: Rename skd_s... |
2802 |
.complete = skd_complete_rq, |
f2fe44598 skd: Avoid double... |
2803 |
.timeout = skd_timed_out, |
ca33dd929 skd: Convert to b... |
2804 2805 2806 |
.init_request = skd_init_request, .exit_request = skd_exit_request, }; |
e67f86b31 Add support for s... |
2807 2808 2809 2810 2811 2812 2813 2814 2815 2816 2817 2818 2819 2820 2821 2822 2823 2824 2825 2826 |
static int skd_cons_disk(struct skd_device *skdev) { int rc = 0; struct gendisk *disk; struct request_queue *q; unsigned long flags; disk = alloc_disk(SKD_MINORS_PER_DEVICE); if (!disk) { rc = -ENOMEM; goto err_out; } skdev->disk = disk; sprintf(disk->disk_name, DRV_NAME "%u", skdev->devno); disk->major = skdev->major; disk->first_minor = skdev->devno * SKD_MINORS_PER_DEVICE; disk->fops = &skd_blockdev_ops; disk->private_data = skdev; |
ca33dd929 skd: Convert to b... |
2827 2828 2829 2830 2831 2832 2833 2834 |
memset(&skdev->tag_set, 0, sizeof(skdev->tag_set)); skdev->tag_set.ops = &skd_mq_ops; skdev->tag_set.nr_hw_queues = 1; skdev->tag_set.queue_depth = skd_max_queue_depth; skdev->tag_set.cmd_size = sizeof(struct skd_request_context) + skdev->sgs_per_request * sizeof(struct scatterlist); skdev->tag_set.numa_node = NUMA_NO_NODE; skdev->tag_set.flags = BLK_MQ_F_SHOULD_MERGE | |
ca33dd929 skd: Convert to b... |
2835 2836 |
BLK_ALLOC_POLICY_TO_MQ_FLAG(BLK_TAG_ALLOC_FIFO); skdev->tag_set.driver_data = skdev; |
92d499d49 skd: error pointe... |
2837 2838 2839 2840 2841 2842 2843 |
rc = blk_mq_alloc_tag_set(&skdev->tag_set); if (rc) goto err_out; q = blk_mq_init_queue(&skdev->tag_set); if (IS_ERR(q)) { blk_mq_free_tag_set(&skdev->tag_set); rc = PTR_ERR(q); |
e67f86b31 Add support for s... |
2844 2845 |
goto err_out; } |
e7278a8b3 skd: Coalesce str... |
2846 |
q->queuedata = skdev; |
e67f86b31 Add support for s... |
2847 2848 2849 |
skdev->queue = q; disk->queue = q; |
e67f86b31 Add support for s... |
2850 |
|
6975f7327 skd_main: switch ... |
2851 |
blk_queue_write_cache(q, true, true); |
e67f86b31 Add support for s... |
2852 2853 |
blk_queue_max_segments(q, skdev->sgs_per_request); blk_queue_max_hw_sectors(q, SKD_N_MAX_SECTORS); |
a5c5b3922 skd: Fix spelling... |
2854 |
/* set optimal I/O size to 8KB */ |
e67f86b31 Add support for s... |
2855 |
blk_queue_io_opt(q, 8192); |
8b904b5b6 block: Use blk_qu... |
2856 2857 |
blk_queue_flag_set(QUEUE_FLAG_NONROT, q); blk_queue_flag_clear(QUEUE_FLAG_ADD_RANDOM, q); |
e67f86b31 Add support for s... |
2858 |
|
a74d5b76f skd: Switch to bl... |
2859 |
blk_queue_rq_timeout(q, 8 * HZ); |
a74d5b76f skd: Switch to bl... |
2860 |
|
e67f86b31 Add support for s... |
2861 |
spin_lock_irqsave(&skdev->lock, flags); |
f98806d61 skd: Switch from ... |
2862 2863 |
dev_dbg(&skdev->pdev->dev, "stopping queue "); |
ca33dd929 skd: Convert to b... |
2864 |
blk_mq_stop_hw_queues(skdev->queue); |
e67f86b31 Add support for s... |
2865 2866 2867 2868 2869 |
spin_unlock_irqrestore(&skdev->lock, flags); err_out: return rc; } |
542d7b001 skd: reorder cons... |
2870 2871 |
#define SKD_N_DEV_TABLE 16u static u32 skd_next_devno; |
e67f86b31 Add support for s... |
2872 |
|
542d7b001 skd: reorder cons... |
2873 |
static struct skd_device *skd_construct(struct pci_dev *pdev) |
e67f86b31 Add support for s... |
2874 |
{ |
542d7b001 skd: reorder cons... |
2875 2876 |
struct skd_device *skdev; int blk_major = skd_major; |
a3db102de skd: Reduce memor... |
2877 |
size_t size; |
542d7b001 skd: reorder cons... |
2878 |
int rc; |
e67f86b31 Add support for s... |
2879 |
|
542d7b001 skd: reorder cons... |
2880 |
skdev = kzalloc(sizeof(*skdev), GFP_KERNEL); |
e67f86b31 Add support for s... |
2881 |
|
542d7b001 skd: reorder cons... |
2882 |
if (!skdev) { |
f98806d61 skd: Switch from ... |
2883 2884 |
dev_err(&pdev->dev, "memory alloc failure "); |
542d7b001 skd: reorder cons... |
2885 2886 |
return NULL; } |
e67f86b31 Add support for s... |
2887 |
|
542d7b001 skd: reorder cons... |
2888 2889 2890 2891 |
skdev->state = SKD_DRVR_STATE_LOAD; skdev->pdev = pdev; skdev->devno = skd_next_devno++; skdev->major = blk_major; |
542d7b001 skd: reorder cons... |
2892 |
skdev->dev_max_queue_depth = 0; |
e67f86b31 Add support for s... |
2893 |
|
542d7b001 skd: reorder cons... |
2894 2895 |
skdev->num_req_context = skd_max_queue_depth; skdev->num_fitmsg_context = skd_max_queue_depth; |
542d7b001 skd: reorder cons... |
2896 2897 2898 2899 2900 |
skdev->cur_max_queue_depth = 1; skdev->queue_low_water_mark = 1; skdev->proto_ver = 99; skdev->sgs_per_request = skd_sgs_per_request; skdev->dbg_level = skd_dbg_level; |
e67f86b31 Add support for s... |
2901 |
|
542d7b001 skd: reorder cons... |
2902 |
spin_lock_init(&skdev->lock); |
ca33dd929 skd: Convert to b... |
2903 |
INIT_WORK(&skdev->start_queue, skd_start_queue); |
542d7b001 skd: reorder cons... |
2904 |
INIT_WORK(&skdev->completion_worker, skd_completion_worker); |
e67f86b31 Add support for s... |
2905 |
|
a3db102de skd: Reduce memor... |
2906 2907 2908 2909 2910 2911 2912 2913 2914 2915 2916 2917 2918 2919 2920 2921 2922 2923 2924 2925 2926 2927 2928 2929 2930 2931 2932 |
size = max(SKD_N_FITMSG_BYTES, SKD_N_SPECIAL_FITMSG_BYTES); skdev->msgbuf_cache = kmem_cache_create("skd-msgbuf", size, 0, SLAB_HWCACHE_ALIGN, NULL); if (!skdev->msgbuf_cache) goto err_out; WARN_ONCE(kmem_cache_size(skdev->msgbuf_cache) < size, "skd-msgbuf: %d < %zd ", kmem_cache_size(skdev->msgbuf_cache), size); size = skd_sgs_per_request * sizeof(struct fit_sg_descriptor); skdev->sglist_cache = kmem_cache_create("skd-sglist", size, 0, SLAB_HWCACHE_ALIGN, NULL); if (!skdev->sglist_cache) goto err_out; WARN_ONCE(kmem_cache_size(skdev->sglist_cache) < size, "skd-sglist: %d < %zd ", kmem_cache_size(skdev->sglist_cache), size); size = SKD_N_INTERNAL_BYTES; skdev->databuf_cache = kmem_cache_create("skd-databuf", size, 0, SLAB_HWCACHE_ALIGN, NULL); if (!skdev->databuf_cache) goto err_out; WARN_ONCE(kmem_cache_size(skdev->databuf_cache) < size, "skd-databuf: %d < %zd ", kmem_cache_size(skdev->databuf_cache), size); |
f98806d61 skd: Switch from ... |
2933 2934 |
dev_dbg(&skdev->pdev->dev, "skcomp "); |
542d7b001 skd: reorder cons... |
2935 2936 2937 |
rc = skd_cons_skcomp(skdev); if (rc < 0) goto err_out; |
e67f86b31 Add support for s... |
2938 |
|
f98806d61 skd: Switch from ... |
2939 2940 |
dev_dbg(&skdev->pdev->dev, "skmsg "); |
542d7b001 skd: reorder cons... |
2941 2942 2943 |
rc = skd_cons_skmsg(skdev); if (rc < 0) goto err_out; |
f98806d61 skd: Switch from ... |
2944 2945 |
dev_dbg(&skdev->pdev->dev, "sksb "); |
542d7b001 skd: reorder cons... |
2946 2947 2948 |
rc = skd_cons_sksb(skdev); if (rc < 0) goto err_out; |
f98806d61 skd: Switch from ... |
2949 2950 |
dev_dbg(&skdev->pdev->dev, "disk "); |
542d7b001 skd: reorder cons... |
2951 2952 2953 |
rc = skd_cons_disk(skdev); if (rc < 0) goto err_out; |
f98806d61 skd: Switch from ... |
2954 2955 |
dev_dbg(&skdev->pdev->dev, "VICTORY "); |
542d7b001 skd: reorder cons... |
2956 2957 2958 |
return skdev; err_out: |
f98806d61 skd: Switch from ... |
2959 2960 |
dev_dbg(&skdev->pdev->dev, "construct failed "); |
542d7b001 skd: reorder cons... |
2961 2962 |
skd_destruct(skdev); return NULL; |
e67f86b31 Add support for s... |
2963 |
} |
542d7b001 skd: reorder cons... |
2964 2965 2966 2967 2968 |
/* ***************************************************************************** * DESTRUCT (FREE) ***************************************************************************** */ |
e67f86b31 Add support for s... |
2969 2970 |
static void skd_free_skcomp(struct skd_device *skdev) { |
7f13bdad2 skd: Fix size arg... |
2971 |
if (skdev->skcomp_table) |
138126214 skd: switch to th... |
2972 2973 |
dma_free_coherent(&skdev->pdev->dev, SKD_SKCOMP_SIZE, skdev->skcomp_table, skdev->cq_dma_address); |
e67f86b31 Add support for s... |
2974 2975 2976 2977 2978 2979 2980 2981 2982 2983 2984 2985 2986 2987 2988 2989 2990 2991 |
skdev->skcomp_table = NULL; skdev->cq_dma_address = 0; } static void skd_free_skmsg(struct skd_device *skdev) { u32 i; if (skdev->skmsg_table == NULL) return; for (i = 0; i < skdev->num_fitmsg_context; i++) { struct skd_fitmsg_context *skmsg; skmsg = &skdev->skmsg_table[i]; if (skmsg->msg_buf != NULL) { |
138126214 skd: switch to th... |
2992 2993 |
dma_free_coherent(&skdev->pdev->dev, SKD_N_FITMSG_BYTES, skmsg->msg_buf, |
e67f86b31 Add support for s... |
2994 2995 2996 2997 2998 2999 3000 3001 3002 |
skmsg->mb_dma_address); } skmsg->msg_buf = NULL; skmsg->mb_dma_address = 0; } kfree(skdev->skmsg_table); skdev->skmsg_table = NULL; } |
e67f86b31 Add support for s... |
3003 3004 |
static void skd_free_sksb(struct skd_device *skdev) { |
a3db102de skd: Reduce memor... |
3005 |
struct skd_special_context *skspcl = &skdev->internal_skspcl; |
e67f86b31 Add support for s... |
3006 |
|
a3db102de skd: Reduce memor... |
3007 3008 |
skd_free_dma(skdev, skdev->databuf_cache, skspcl->data_buf, skspcl->db_dma_address, DMA_BIDIRECTIONAL); |
e67f86b31 Add support for s... |
3009 3010 3011 |
skspcl->data_buf = NULL; skspcl->db_dma_address = 0; |
a3db102de skd: Reduce memor... |
3012 3013 |
skd_free_dma(skdev, skdev->msgbuf_cache, skspcl->msg_buf, skspcl->mb_dma_address, DMA_TO_DEVICE); |
e67f86b31 Add support for s... |
3014 3015 3016 |
skspcl->msg_buf = NULL; skspcl->mb_dma_address = 0; |
a3db102de skd: Reduce memor... |
3017 |
skd_free_sg_list(skdev, skspcl->req.sksg_list, |
e67f86b31 Add support for s... |
3018 3019 3020 3021 3022 |
skspcl->req.sksg_dma_address); skspcl->req.sksg_list = NULL; skspcl->req.sksg_dma_address = 0; } |
e67f86b31 Add support for s... |
3023 3024 3025 |
static void skd_free_disk(struct skd_device *skdev) { struct gendisk *disk = skdev->disk; |
7277cc67b skd: Avoid that m... |
3026 3027 3028 3029 3030 3031 |
if (disk && (disk->flags & GENHD_FL_UP)) del_gendisk(disk); if (skdev->queue) { blk_cleanup_queue(skdev->queue); skdev->queue = NULL; |
4633504c1 skd: Make it easi... |
3032 3033 |
if (disk) disk->queue = NULL; |
e67f86b31 Add support for s... |
3034 |
} |
7277cc67b skd: Avoid that m... |
3035 |
|
ca33dd929 skd: Convert to b... |
3036 3037 |
if (skdev->tag_set.tags) blk_mq_free_tag_set(&skdev->tag_set); |
7277cc67b skd: Avoid that m... |
3038 |
put_disk(disk); |
e67f86b31 Add support for s... |
3039 3040 |
skdev->disk = NULL; } |
542d7b001 skd: reorder cons... |
3041 3042 3043 3044 |
static void skd_destruct(struct skd_device *skdev) { if (skdev == NULL) return; |
ca33dd929 skd: Convert to b... |
3045 |
cancel_work_sync(&skdev->start_queue); |
f98806d61 skd: Switch from ... |
3046 3047 |
dev_dbg(&skdev->pdev->dev, "disk "); |
542d7b001 skd: reorder cons... |
3048 |
skd_free_disk(skdev); |
f98806d61 skd: Switch from ... |
3049 3050 |
dev_dbg(&skdev->pdev->dev, "sksb "); |
542d7b001 skd: reorder cons... |
3051 |
skd_free_sksb(skdev); |
f98806d61 skd: Switch from ... |
3052 3053 |
dev_dbg(&skdev->pdev->dev, "skmsg "); |
542d7b001 skd: reorder cons... |
3054 |
skd_free_skmsg(skdev); |
e67f86b31 Add support for s... |
3055 |
|
f98806d61 skd: Switch from ... |
3056 3057 |
dev_dbg(&skdev->pdev->dev, "skcomp "); |
542d7b001 skd: reorder cons... |
3058 |
skd_free_skcomp(skdev); |
a3db102de skd: Reduce memor... |
3059 3060 3061 |
kmem_cache_destroy(skdev->databuf_cache); kmem_cache_destroy(skdev->sglist_cache); kmem_cache_destroy(skdev->msgbuf_cache); |
f98806d61 skd: Switch from ... |
3062 3063 |
dev_dbg(&skdev->pdev->dev, "skdev "); |
542d7b001 skd: reorder cons... |
3064 3065 |
kfree(skdev); } |
e67f86b31 Add support for s... |
3066 3067 3068 3069 3070 3071 3072 3073 3074 3075 3076 3077 3078 |
/* ***************************************************************************** * BLOCK DEVICE (BDEV) GLUE ***************************************************************************** */ static int skd_bdev_getgeo(struct block_device *bdev, struct hd_geometry *geo) { struct skd_device *skdev; u64 capacity; skdev = bdev->bd_disk->private_data; |
f98806d61 skd: Switch from ... |
3079 3080 3081 |
dev_dbg(&skdev->pdev->dev, "%s: CMD[%s] getgeo device ", bdev->bd_disk->disk_name, current->comm); |
e67f86b31 Add support for s... |
3082 3083 3084 3085 3086 3087 3088 3089 3090 3091 3092 |
if (skdev->read_cap_is_valid) { capacity = get_capacity(skdev->disk); geo->heads = 64; geo->sectors = 255; geo->cylinders = (capacity) / (255 * 64); return 0; } return -EIO; } |
0d52c756a block: convert to... |
3093 |
static int skd_bdev_attach(struct device *parent, struct skd_device *skdev) |
e67f86b31 Add support for s... |
3094 |
{ |
f98806d61 skd: Switch from ... |
3095 3096 |
dev_dbg(&skdev->pdev->dev, "add_disk "); |
fef912bf8 block: genhd: add... |
3097 |
device_add_disk(parent, skdev->disk, NULL); |
e67f86b31 Add support for s... |
3098 3099 3100 3101 3102 |
return 0; } static const struct block_device_operations skd_blockdev_ops = { .owner = THIS_MODULE, |
e67f86b31 Add support for s... |
3103 3104 |
.getgeo = skd_bdev_getgeo, }; |
e67f86b31 Add support for s... |
3105 3106 3107 3108 3109 |
/* ***************************************************************************** * PCIe DRIVER GLUE ***************************************************************************** */ |
9baa3c34a PCI: Remove DEFIN... |
3110 |
static const struct pci_device_id skd_pci_tbl[] = { |
e67f86b31 Add support for s... |
3111 3112 3113 3114 3115 3116 3117 3118 3119 3120 3121 3122 3123 3124 3125 3126 3127 3128 3129 3130 3131 3132 3133 3134 3135 3136 3137 3138 3139 3140 3141 3142 3143 3144 3145 3146 3147 3148 3149 3150 3151 3152 |
{ PCI_VENDOR_ID_STEC, PCI_DEVICE_ID_S1120, PCI_ANY_ID, PCI_ANY_ID, 0, 0, }, { 0 } /* terminate list */ }; MODULE_DEVICE_TABLE(pci, skd_pci_tbl); static char *skd_pci_info(struct skd_device *skdev, char *str) { int pcie_reg; strcpy(str, "PCIe ("); pcie_reg = pci_find_capability(skdev->pdev, PCI_CAP_ID_EXP); if (pcie_reg) { char lwstr[6]; uint16_t pcie_lstat, lspeed, lwidth; pcie_reg += 0x12; pci_read_config_word(skdev->pdev, pcie_reg, &pcie_lstat); lspeed = pcie_lstat & (0xF); lwidth = (pcie_lstat & 0x3F0) >> 4; if (lspeed == 1) strcat(str, "2.5GT/s "); else if (lspeed == 2) strcat(str, "5.0GT/s "); else strcat(str, "<unknown> "); snprintf(lwstr, sizeof(lwstr), "%dX)", lwidth); strcat(str, lwstr); } return str; } static int skd_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) { int i; int rc = 0; char pci_str[32]; struct skd_device *skdev; |
bb9f7dd3d skd: Bump driver ... |
3153 3154 3155 |
dev_dbg(&pdev->dev, "vendor=%04X device=%04x ", pdev->vendor, pdev->device); |
e67f86b31 Add support for s... |
3156 3157 3158 3159 3160 3161 3162 |
rc = pci_enable_device(pdev); if (rc) return rc; rc = pci_request_regions(pdev, DRV_NAME); if (rc) goto err_out; |
138126214 skd: switch to th... |
3163 3164 |
rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); if (rc) |
d91dc172e skd: fix unchecke... |
3165 |
rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); |
138126214 skd: switch to th... |
3166 3167 3168 3169 |
if (rc) { dev_err(&pdev->dev, "DMA mask error %d ", rc); goto err_out_regions; |
e67f86b31 Add support for s... |
3170 |
} |
b8df6647c skd: register blo... |
3171 3172 3173 3174 3175 3176 3177 |
if (!skd_major) { rc = register_blkdev(0, DRV_NAME); if (rc < 0) goto err_out_regions; BUG_ON(!rc); skd_major = rc; } |
e67f86b31 Add support for s... |
3178 |
skdev = skd_construct(pdev); |
1762b57fc skd: fix error re... |
3179 3180 |
if (skdev == NULL) { rc = -ENOMEM; |
e67f86b31 Add support for s... |
3181 |
goto err_out_regions; |
1762b57fc skd: fix error re... |
3182 |
} |
e67f86b31 Add support for s... |
3183 3184 |
skd_pci_info(skdev, pci_str); |
f98806d61 skd: Switch from ... |
3185 3186 |
dev_info(&pdev->dev, "%s 64bit ", pci_str); |
e67f86b31 Add support for s... |
3187 3188 3189 3190 |
pci_set_master(pdev); rc = pci_enable_pcie_error_reporting(pdev); if (rc) { |
f98806d61 skd: Switch from ... |
3191 3192 3193 |
dev_err(&pdev->dev, "bad enable of PCIe error reporting rc=%d ", rc); |
e67f86b31 Add support for s... |
3194 3195 3196 |
skdev->pcie_error_reporting_is_enabled = 0; } else skdev->pcie_error_reporting_is_enabled = 1; |
e67f86b31 Add support for s... |
3197 |
pci_set_drvdata(pdev, skdev); |
ebedd16da skd: remove redun... |
3198 |
|
e67f86b31 Add support for s... |
3199 3200 3201 3202 3203 3204 |
for (i = 0; i < SKD_MAX_BARS; i++) { skdev->mem_phys[i] = pci_resource_start(pdev, i); skdev->mem_size[i] = (u32)pci_resource_len(pdev, i); skdev->mem_map[i] = ioremap(skdev->mem_phys[i], skdev->mem_size[i]); if (!skdev->mem_map[i]) { |
f98806d61 skd: Switch from ... |
3205 3206 3207 |
dev_err(&pdev->dev, "Unable to map adapter memory! "); |
e67f86b31 Add support for s... |
3208 3209 3210 |
rc = -ENODEV; goto err_out_iounmap; } |
f98806d61 skd: Switch from ... |
3211 3212 3213 3214 |
dev_dbg(&pdev->dev, "mem_map=%p, phyd=%016llx, size=%d ", skdev->mem_map[i], (uint64_t)skdev->mem_phys[i], skdev->mem_size[i]); |
e67f86b31 Add support for s... |
3215 3216 3217 3218 |
} rc = skd_acquire_irq(skdev); if (rc) { |
f98806d61 skd: Switch from ... |
3219 3220 |
dev_err(&pdev->dev, "interrupt resource error %d ", rc); |
e67f86b31 Add support for s... |
3221 3222 3223 3224 3225 3226 3227 3228 3229 3230 3231 3232 3233 3234 3235 3236 |
goto err_out_iounmap; } rc = skd_start_timer(skdev); if (rc) goto err_out_timer; init_waitqueue_head(&skdev->waitq); skd_start_device(skdev); rc = wait_event_interruptible_timeout(skdev->waitq, (skdev->gendisk_on), (SKD_START_WAIT_SECONDS * HZ)); if (skdev->gendisk_on > 0) { /* device came on-line after reset */ |
0d52c756a block: convert to... |
3237 |
skd_bdev_attach(&pdev->dev, skdev); |
e67f86b31 Add support for s... |
3238 3239 3240 3241 |
rc = 0; } else { /* we timed out, something is wrong with the device, don't add the disk structure */ |
f98806d61 skd: Switch from ... |
3242 3243 3244 |
dev_err(&pdev->dev, "error: waiting for s1120 timed out %d! ", rc); |
e67f86b31 Add support for s... |
3245 3246 3247 3248 3249 |
/* in case of no error; we timeout with ENXIO */ if (!rc) rc = -ENXIO; goto err_out_timer; } |
e67f86b31 Add support for s... |
3250 3251 3252 3253 3254 3255 3256 3257 3258 3259 3260 3261 3262 3263 3264 3265 3266 3267 3268 3269 3270 3271 3272 3273 3274 3275 3276 3277 3278 3279 3280 3281 |
return rc; err_out_timer: skd_stop_device(skdev); skd_release_irq(skdev); err_out_iounmap: for (i = 0; i < SKD_MAX_BARS; i++) if (skdev->mem_map[i]) iounmap(skdev->mem_map[i]); if (skdev->pcie_error_reporting_is_enabled) pci_disable_pcie_error_reporting(pdev); skd_destruct(skdev); err_out_regions: pci_release_regions(pdev); err_out: pci_disable_device(pdev); pci_set_drvdata(pdev, NULL); return rc; } static void skd_pci_remove(struct pci_dev *pdev) { int i; struct skd_device *skdev; skdev = pci_get_drvdata(pdev); if (!skdev) { |
f98806d61 skd: Switch from ... |
3282 3283 |
dev_err(&pdev->dev, "no device data for PCI "); |
e67f86b31 Add support for s... |
3284 3285 3286 3287 3288 3289 3290 |
return; } skd_stop_device(skdev); skd_release_irq(skdev); for (i = 0; i < SKD_MAX_BARS; i++) if (skdev->mem_map[i]) |
4854afe32 skd: Fix endianne... |
3291 |
iounmap(skdev->mem_map[i]); |
e67f86b31 Add support for s... |
3292 3293 3294 3295 3296 3297 3298 3299 3300 3301 3302 3303 3304 3305 3306 3307 3308 3309 3310 3311 |
if (skdev->pcie_error_reporting_is_enabled) pci_disable_pcie_error_reporting(pdev); skd_destruct(skdev); pci_release_regions(pdev); pci_disable_device(pdev); pci_set_drvdata(pdev, NULL); return; } static int skd_pci_suspend(struct pci_dev *pdev, pm_message_t state) { int i; struct skd_device *skdev; skdev = pci_get_drvdata(pdev); if (!skdev) { |
f98806d61 skd: Switch from ... |
3312 3313 |
dev_err(&pdev->dev, "no device data for PCI "); |
e67f86b31 Add support for s... |
3314 3315 3316 3317 3318 3319 3320 3321 3322 |
return -EIO; } skd_stop_device(skdev); skd_release_irq(skdev); for (i = 0; i < SKD_MAX_BARS; i++) if (skdev->mem_map[i]) |
4854afe32 skd: Fix endianne... |
3323 |
iounmap(skdev->mem_map[i]); |
e67f86b31 Add support for s... |
3324 3325 3326 3327 3328 3329 3330 3331 3332 3333 3334 3335 3336 3337 3338 3339 3340 3341 3342 |
if (skdev->pcie_error_reporting_is_enabled) pci_disable_pcie_error_reporting(pdev); pci_release_regions(pdev); pci_save_state(pdev); pci_disable_device(pdev); pci_set_power_state(pdev, pci_choose_state(pdev, state)); return 0; } static int skd_pci_resume(struct pci_dev *pdev) { int i; int rc = 0; struct skd_device *skdev; skdev = pci_get_drvdata(pdev); if (!skdev) { |
f98806d61 skd: Switch from ... |
3343 3344 |
dev_err(&pdev->dev, "no device data for PCI "); |
e67f86b31 Add support for s... |
3345 3346 3347 3348 3349 3350 3351 3352 3353 3354 3355 3356 3357 |
return -1; } pci_set_power_state(pdev, PCI_D0); pci_enable_wake(pdev, PCI_D0, 0); pci_restore_state(pdev); rc = pci_enable_device(pdev); if (rc) return rc; rc = pci_request_regions(pdev, DRV_NAME); if (rc) goto err_out; |
138126214 skd: switch to th... |
3358 3359 |
rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); if (rc) |
d91dc172e skd: fix unchecke... |
3360 |
rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); |
138126214 skd: switch to th... |
3361 3362 3363 3364 |
if (rc) { dev_err(&pdev->dev, "DMA mask error %d ", rc); goto err_out_regions; |
e67f86b31 Add support for s... |
3365 3366 3367 3368 3369 |
} pci_set_master(pdev); rc = pci_enable_pcie_error_reporting(pdev); if (rc) { |
f98806d61 skd: Switch from ... |
3370 3371 3372 |
dev_err(&pdev->dev, "bad enable of PCIe error reporting rc=%d ", rc); |
e67f86b31 Add support for s... |
3373 3374 3375 3376 3377 3378 3379 3380 3381 3382 3383 |
skdev->pcie_error_reporting_is_enabled = 0; } else skdev->pcie_error_reporting_is_enabled = 1; for (i = 0; i < SKD_MAX_BARS; i++) { skdev->mem_phys[i] = pci_resource_start(pdev, i); skdev->mem_size[i] = (u32)pci_resource_len(pdev, i); skdev->mem_map[i] = ioremap(skdev->mem_phys[i], skdev->mem_size[i]); if (!skdev->mem_map[i]) { |
f98806d61 skd: Switch from ... |
3384 3385 |
dev_err(&pdev->dev, "Unable to map adapter memory! "); |
e67f86b31 Add support for s... |
3386 3387 3388 |
rc = -ENODEV; goto err_out_iounmap; } |
f98806d61 skd: Switch from ... |
3389 3390 3391 3392 |
dev_dbg(&pdev->dev, "mem_map=%p, phyd=%016llx, size=%d ", skdev->mem_map[i], (uint64_t)skdev->mem_phys[i], skdev->mem_size[i]); |
e67f86b31 Add support for s... |
3393 3394 3395 |
} rc = skd_acquire_irq(skdev); if (rc) { |
f98806d61 skd: Switch from ... |
3396 3397 |
dev_err(&pdev->dev, "interrupt resource error %d ", rc); |
e67f86b31 Add support for s... |
3398 3399 3400 3401 3402 3403 3404 3405 3406 3407 3408 3409 3410 3411 3412 3413 3414 3415 3416 3417 3418 3419 3420 3421 3422 3423 3424 3425 3426 3427 3428 3429 3430 3431 3432 3433 |
goto err_out_iounmap; } rc = skd_start_timer(skdev); if (rc) goto err_out_timer; init_waitqueue_head(&skdev->waitq); skd_start_device(skdev); return rc; err_out_timer: skd_stop_device(skdev); skd_release_irq(skdev); err_out_iounmap: for (i = 0; i < SKD_MAX_BARS; i++) if (skdev->mem_map[i]) iounmap(skdev->mem_map[i]); if (skdev->pcie_error_reporting_is_enabled) pci_disable_pcie_error_reporting(pdev); err_out_regions: pci_release_regions(pdev); err_out: pci_disable_device(pdev); return rc; } static void skd_pci_shutdown(struct pci_dev *pdev) { struct skd_device *skdev; |
f98806d61 skd: Switch from ... |
3434 3435 |
dev_err(&pdev->dev, "%s called ", __func__); |
e67f86b31 Add support for s... |
3436 3437 3438 |
skdev = pci_get_drvdata(pdev); if (!skdev) { |
f98806d61 skd: Switch from ... |
3439 3440 |
dev_err(&pdev->dev, "no device data for PCI "); |
e67f86b31 Add support for s... |
3441 3442 |
return; } |
f98806d61 skd: Switch from ... |
3443 3444 |
dev_err(&pdev->dev, "calling stop "); |
e67f86b31 Add support for s... |
3445 3446 3447 3448 3449 3450 3451 3452 3453 3454 3455 3456 3457 3458 3459 3460 3461 3462 |
skd_stop_device(skdev); } static struct pci_driver skd_driver = { .name = DRV_NAME, .id_table = skd_pci_tbl, .probe = skd_pci_probe, .remove = skd_pci_remove, .suspend = skd_pci_suspend, .resume = skd_pci_resume, .shutdown = skd_pci_shutdown, }; /* ***************************************************************************** * LOGGING SUPPORT ***************************************************************************** */ |
e67f86b31 Add support for s... |
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const char *skd_drive_state_to_str(int state) { switch (state) { case FIT_SR_DRIVE_OFFLINE: return "OFFLINE"; case FIT_SR_DRIVE_INIT: return "INIT"; case FIT_SR_DRIVE_ONLINE: return "ONLINE"; case FIT_SR_DRIVE_BUSY: return "BUSY"; case FIT_SR_DRIVE_FAULT: return "FAULT"; case FIT_SR_DRIVE_DEGRADED: return "DEGRADED"; case FIT_SR_PCIE_LINK_DOWN: return "INK_DOWN"; case FIT_SR_DRIVE_SOFT_RESET: return "SOFT_RESET"; case FIT_SR_DRIVE_NEED_FW_DOWNLOAD: return "NEED_FW"; case FIT_SR_DRIVE_INIT_FAULT: return "INIT_FAULT"; case FIT_SR_DRIVE_BUSY_SANITIZE: return "BUSY_SANITIZE"; case FIT_SR_DRIVE_BUSY_ERASE: return "BUSY_ERASE"; case FIT_SR_DRIVE_FW_BOOTING: return "FW_BOOTING"; default: return "???"; } } const char *skd_skdev_state_to_str(enum skd_drvr_state state) { switch (state) { case SKD_DRVR_STATE_LOAD: return "LOAD"; case SKD_DRVR_STATE_IDLE: return "IDLE"; case SKD_DRVR_STATE_BUSY: return "BUSY"; case SKD_DRVR_STATE_STARTING: return "STARTING"; case SKD_DRVR_STATE_ONLINE: return "ONLINE"; case SKD_DRVR_STATE_PAUSING: return "PAUSING"; case SKD_DRVR_STATE_PAUSED: return "PAUSED"; |
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case SKD_DRVR_STATE_RESTARTING: return "RESTARTING"; case SKD_DRVR_STATE_RESUMING: return "RESUMING"; case SKD_DRVR_STATE_STOPPING: return "STOPPING"; case SKD_DRVR_STATE_SYNCING: return "SYNCING"; case SKD_DRVR_STATE_FAULT: return "FAULT"; case SKD_DRVR_STATE_DISAPPEARED: return "DISAPPEARED"; case SKD_DRVR_STATE_BUSY_ERASE: return "BUSY_ERASE"; case SKD_DRVR_STATE_BUSY_SANITIZE: return "BUSY_SANITIZE"; case SKD_DRVR_STATE_BUSY_IMMINENT: return "BUSY_IMMINENT"; case SKD_DRVR_STATE_WAIT_BOOT: return "WAIT_BOOT"; default: return "???"; } } |
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static const char *skd_skreq_state_to_str(enum skd_req_state state) |
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{ switch (state) { case SKD_REQ_STATE_IDLE: return "IDLE"; case SKD_REQ_STATE_SETUP: return "SETUP"; case SKD_REQ_STATE_BUSY: return "BUSY"; case SKD_REQ_STATE_COMPLETED: return "COMPLETED"; case SKD_REQ_STATE_TIMEOUT: return "TIMEOUT"; |
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default: return "???"; } } static void skd_log_skdev(struct skd_device *skdev, const char *event) { |
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dev_dbg(&skdev->pdev->dev, "skdev=%p event='%s' ", skdev, event); dev_dbg(&skdev->pdev->dev, " drive_state=%s(%d) driver_state=%s(%d) ", skd_drive_state_to_str(skdev->drive_state), skdev->drive_state, skd_skdev_state_to_str(skdev->state), skdev->state); dev_dbg(&skdev->pdev->dev, " busy=%d limit=%d dev=%d lowat=%d ", |
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skd_in_flight(skdev), skdev->cur_max_queue_depth, |
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skdev->dev_max_queue_depth, skdev->queue_low_water_mark); |
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dev_dbg(&skdev->pdev->dev, " cycle=%d cycle_ix=%d ", skdev->skcomp_cycle, skdev->skcomp_ix); |
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} |
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static void skd_log_skreq(struct skd_device *skdev, struct skd_request_context *skreq, const char *event) { |
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struct request *req = blk_mq_rq_from_pdu(skreq); u32 lba = blk_rq_pos(req); u32 count = blk_rq_sectors(req); |
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dev_dbg(&skdev->pdev->dev, "skreq=%p event='%s' ", skreq, event); dev_dbg(&skdev->pdev->dev, " state=%s(%d) id=0x%04x fitmsg=0x%04x ", skd_skreq_state_to_str(skreq->state), skreq->state, skreq->id, skreq->fitmsg_id); |
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dev_dbg(&skdev->pdev->dev, " sg_dir=%d n_sg=%d ", skreq->data_dir, skreq->n_sg); |
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|
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dev_dbg(&skdev->pdev->dev, "req=%p lba=%u(0x%x) count=%u(0x%x) dir=%d ", req, lba, lba, count, count, (int)rq_data_dir(req)); |
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} /* ***************************************************************************** * MODULE GLUE ***************************************************************************** */ static int __init skd_init(void) { |
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BUILD_BUG_ON(sizeof(struct fit_completion_entry_v1) != 8); BUILD_BUG_ON(sizeof(struct fit_comp_error_info) != 32); BUILD_BUG_ON(sizeof(struct skd_command_header) != 16); BUILD_BUG_ON(sizeof(struct skd_scsi_request) != 32); BUILD_BUG_ON(sizeof(struct driver_inquiry_data) != 44); |
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BUILD_BUG_ON(offsetof(struct skd_msg_buf, fmh) != 0); BUILD_BUG_ON(offsetof(struct skd_msg_buf, scsi) != 64); BUILD_BUG_ON(sizeof(struct skd_msg_buf) != SKD_N_FITMSG_BYTES); |
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|
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switch (skd_isr_type) { case SKD_IRQ_LEGACY: case SKD_IRQ_MSI: case SKD_IRQ_MSIX: break; default: |
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pr_err(PFX "skd_isr_type %d invalid, re-set to %d ", |
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skd_isr_type, SKD_IRQ_DEFAULT); skd_isr_type = SKD_IRQ_DEFAULT; } |
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if (skd_max_queue_depth < 1 || skd_max_queue_depth > SKD_MAX_QUEUE_DEPTH) { pr_err(PFX "skd_max_queue_depth %d invalid, re-set to %d ", |
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skd_max_queue_depth, SKD_MAX_QUEUE_DEPTH_DEFAULT); skd_max_queue_depth = SKD_MAX_QUEUE_DEPTH_DEFAULT; } |
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if (skd_max_req_per_msg < 1 || skd_max_req_per_msg > SKD_MAX_REQ_PER_MSG) { |
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pr_err(PFX "skd_max_req_per_msg %d invalid, re-set to %d ", |
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skd_max_req_per_msg, SKD_MAX_REQ_PER_MSG_DEFAULT); skd_max_req_per_msg = SKD_MAX_REQ_PER_MSG_DEFAULT; } if (skd_sgs_per_request < 1 || skd_sgs_per_request > 4096) { |
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pr_err(PFX "skd_sg_per_request %d invalid, re-set to %d ", |
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skd_sgs_per_request, SKD_N_SG_PER_REQ_DEFAULT); skd_sgs_per_request = SKD_N_SG_PER_REQ_DEFAULT; } if (skd_dbg_level < 0 || skd_dbg_level > 2) { |
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pr_err(PFX "skd_dbg_level %d invalid, re-set to %d ", |
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skd_dbg_level, 0); skd_dbg_level = 0; } if (skd_isr_comp_limit < 0) { |
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pr_err(PFX "skd_isr_comp_limit %d invalid, set to %d ", |
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skd_isr_comp_limit, 0); skd_isr_comp_limit = 0; } |
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return pci_register_driver(&skd_driver); |
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} static void __exit skd_exit(void) { |
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pci_unregister_driver(&skd_driver); |
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if (skd_major) unregister_blkdev(skd_major, DRV_NAME); |
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} |
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module_init(skd_init); module_exit(skd_exit); |