Blame view
drivers/scsi/sun_esp.c
14.2 KB
cd9ad58d4 [SCSI] SUNESP: Co... |
1 2 |
/* sun_esp.c: ESP front-end for Sparc SBUS systems. * |
334ae6147 sparc: Kill SBUS ... |
3 |
* Copyright (C) 2007, 2008 David S. Miller (davem@davemloft.net) |
cd9ad58d4 [SCSI] SUNESP: Co... |
4 5 6 7 |
*/ #include <linux/kernel.h> #include <linux/types.h> |
6025dfe5b [SCSI] SUNESP: su... |
8 |
#include <linux/delay.h> |
cd9ad58d4 [SCSI] SUNESP: Co... |
9 |
#include <linux/module.h> |
27ac792ca PAGE_ALIGN(): cor... |
10 |
#include <linux/mm.h> |
cd9ad58d4 [SCSI] SUNESP: Co... |
11 |
#include <linux/init.h> |
738f2b7b8 sparc: Convert al... |
12 |
#include <linux/dma-mapping.h> |
05bb5e93f sun_esp: Convert ... |
13 14 |
#include <linux/of.h> #include <linux/of_device.h> |
5a0e3ad6a include cleanup: ... |
15 |
#include <linux/gfp.h> |
cd9ad58d4 [SCSI] SUNESP: Co... |
16 17 18 19 |
#include <asm/irq.h> #include <asm/io.h> #include <asm/dma.h> |
cd9ad58d4 [SCSI] SUNESP: Co... |
20 21 22 23 24 25 |
#include <scsi/scsi_host.h> #include "esp_scsi.h" #define DRV_MODULE_NAME "sun_esp" #define PFX DRV_MODULE_NAME ": " |
05bb5e93f sun_esp: Convert ... |
26 27 |
#define DRV_VERSION "1.100" #define DRV_MODULE_RELDATE "August 27, 2008" |
cd9ad58d4 [SCSI] SUNESP: Co... |
28 29 30 31 32 |
#define dma_read32(REG) \ sbus_readl(esp->dma_regs + (REG)) #define dma_write32(VAL, REG) \ sbus_writel((VAL), esp->dma_regs + (REG)) |
334ae6147 sparc: Kill SBUS ... |
33 34 35 36 37 38 39 40 41 42 |
/* DVMA chip revisions */ enum dvma_rev { dvmarev0, dvmaesc1, dvmarev1, dvmarev2, dvmarev3, dvmarevplus, dvmahme }; |
cd9ad58d4 [SCSI] SUNESP: Co... |
43 |
|
334ae6147 sparc: Kill SBUS ... |
44 |
static int __devinit esp_sbus_setup_dma(struct esp *esp, |
2dc115813 of/device: Replac... |
45 |
struct platform_device *dma_of) |
334ae6147 sparc: Kill SBUS ... |
46 47 |
{ esp->dma = dma_of; |
cd9ad58d4 [SCSI] SUNESP: Co... |
48 |
|
334ae6147 sparc: Kill SBUS ... |
49 50 51 52 53 |
esp->dma_regs = of_ioremap(&dma_of->resource[0], 0, resource_size(&dma_of->resource[0]), "espdma"); if (!esp->dma_regs) return -ENOMEM; |
cd9ad58d4 [SCSI] SUNESP: Co... |
54 |
|
334ae6147 sparc: Kill SBUS ... |
55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 |
switch (dma_read32(DMA_CSR) & DMA_DEVICE_ID) { case DMA_VERS0: esp->dmarev = dvmarev0; break; case DMA_ESCV1: esp->dmarev = dvmaesc1; break; case DMA_VERS1: esp->dmarev = dvmarev1; break; case DMA_VERS2: esp->dmarev = dvmarev2; break; case DMA_VERHME: esp->dmarev = dvmahme; break; case DMA_VERSPLUS: esp->dmarev = dvmarevplus; break; |
cd9ad58d4 [SCSI] SUNESP: Co... |
74 |
} |
cd9ad58d4 [SCSI] SUNESP: Co... |
75 76 77 78 79 80 81 |
return 0; } static int __devinit esp_sbus_map_regs(struct esp *esp, int hme) { |
2dc115813 of/device: Replac... |
82 |
struct platform_device *op = esp->dev; |
cd9ad58d4 [SCSI] SUNESP: Co... |
83 84 85 86 87 88 |
struct resource *res; /* On HME, two reg sets exist, first is DVMA, * second is ESP registers. */ if (hme) |
05bb5e93f sun_esp: Convert ... |
89 |
res = &op->resource[1]; |
cd9ad58d4 [SCSI] SUNESP: Co... |
90 |
else |
05bb5e93f sun_esp: Convert ... |
91 |
res = &op->resource[0]; |
cd9ad58d4 [SCSI] SUNESP: Co... |
92 |
|
05bb5e93f sun_esp: Convert ... |
93 |
esp->regs = of_ioremap(res, 0, SBUS_ESP_REG_SIZE, "ESP"); |
cd9ad58d4 [SCSI] SUNESP: Co... |
94 95 96 97 98 99 100 101 |
if (!esp->regs) return -ENOMEM; return 0; } static int __devinit esp_sbus_map_command_block(struct esp *esp) { |
2dc115813 of/device: Replac... |
102 |
struct platform_device *op = esp->dev; |
cd9ad58d4 [SCSI] SUNESP: Co... |
103 |
|
05bb5e93f sun_esp: Convert ... |
104 |
esp->command_block = dma_alloc_coherent(&op->dev, 16, |
738f2b7b8 sparc: Convert al... |
105 106 |
&esp->command_block_dma, GFP_ATOMIC); |
cd9ad58d4 [SCSI] SUNESP: Co... |
107 108 109 110 111 112 113 114 |
if (!esp->command_block) return -ENOMEM; return 0; } static int __devinit esp_sbus_register_irq(struct esp *esp) { struct Scsi_Host *host = esp->host; |
2dc115813 of/device: Replac... |
115 |
struct platform_device *op = esp->dev; |
cd9ad58d4 [SCSI] SUNESP: Co... |
116 |
|
1636f8ac2 sparc/of: Move of... |
117 |
host->irq = op->archdata.irqs[0]; |
cd9ad58d4 [SCSI] SUNESP: Co... |
118 119 |
return request_irq(host->irq, scsi_esp_intr, IRQF_SHARED, "ESP", esp); } |
2dc115813 of/device: Replac... |
120 |
static void __devinit esp_get_scsi_id(struct esp *esp, struct platform_device *espdma) |
cd9ad58d4 [SCSI] SUNESP: Co... |
121 |
{ |
2dc115813 of/device: Replac... |
122 |
struct platform_device *op = esp->dev; |
05bb5e93f sun_esp: Convert ... |
123 |
struct device_node *dp; |
cd9ad58d4 [SCSI] SUNESP: Co... |
124 |
|
61c7a080a of: Always use 's... |
125 |
dp = op->dev.of_node; |
cd9ad58d4 [SCSI] SUNESP: Co... |
126 127 128 129 130 131 132 |
esp->scsi_id = of_getintprop_default(dp, "initiator-id", 0xff); if (esp->scsi_id != 0xff) goto done; esp->scsi_id = of_getintprop_default(dp, "scsi-initiator-id", 0xff); if (esp->scsi_id != 0xff) goto done; |
61c7a080a of: Always use 's... |
133 |
esp->scsi_id = of_getintprop_default(espdma->dev.of_node, |
cd9ad58d4 [SCSI] SUNESP: Co... |
134 135 136 137 138 139 140 141 142 |
"scsi-initiator-id", 7); done: esp->host->this_id = esp->scsi_id; esp->scsi_id_mask = (1 << esp->scsi_id); } static void __devinit esp_get_differential(struct esp *esp) { |
2dc115813 of/device: Replac... |
143 |
struct platform_device *op = esp->dev; |
05bb5e93f sun_esp: Convert ... |
144 |
struct device_node *dp; |
cd9ad58d4 [SCSI] SUNESP: Co... |
145 |
|
61c7a080a of: Always use 's... |
146 |
dp = op->dev.of_node; |
cd9ad58d4 [SCSI] SUNESP: Co... |
147 148 149 150 151 152 153 154 |
if (of_find_property(dp, "differential", NULL)) esp->flags |= ESP_FLAG_DIFFERENTIAL; else esp->flags &= ~ESP_FLAG_DIFFERENTIAL; } static void __devinit esp_get_clock_params(struct esp *esp) { |
2dc115813 of/device: Replac... |
155 |
struct platform_device *op = esp->dev; |
05bb5e93f sun_esp: Convert ... |
156 |
struct device_node *bus_dp, *dp; |
cd9ad58d4 [SCSI] SUNESP: Co... |
157 |
int fmhz; |
61c7a080a of: Always use 's... |
158 |
dp = op->dev.of_node; |
05bb5e93f sun_esp: Convert ... |
159 |
bus_dp = dp->parent; |
cd9ad58d4 [SCSI] SUNESP: Co... |
160 161 162 |
fmhz = of_getintprop_default(dp, "clock-frequency", 0); if (fmhz == 0) |
05bb5e93f sun_esp: Convert ... |
163 |
fmhz = of_getintprop_default(bus_dp, "clock-frequency", 0); |
cd9ad58d4 [SCSI] SUNESP: Co... |
164 165 166 |
esp->cfreq = fmhz; } |
2dc115813 of/device: Replac... |
167 |
static void __devinit esp_get_bursts(struct esp *esp, struct platform_device *dma_of) |
cd9ad58d4 [SCSI] SUNESP: Co... |
168 |
{ |
61c7a080a of: Always use 's... |
169 |
struct device_node *dma_dp = dma_of->dev.of_node; |
2dc115813 of/device: Replac... |
170 |
struct platform_device *op = esp->dev; |
334ae6147 sparc: Kill SBUS ... |
171 172 |
struct device_node *dp; u8 bursts, val; |
cd9ad58d4 [SCSI] SUNESP: Co... |
173 |
|
61c7a080a of: Always use 's... |
174 |
dp = op->dev.of_node; |
cd9ad58d4 [SCSI] SUNESP: Co... |
175 |
bursts = of_getintprop_default(dp, "burst-sizes", 0xff); |
334ae6147 sparc: Kill SBUS ... |
176 177 178 |
val = of_getintprop_default(dma_dp, "burst-sizes", 0xff); if (val != 0xff) bursts &= val; |
cd9ad58d4 [SCSI] SUNESP: Co... |
179 |
|
05bb5e93f sun_esp: Convert ... |
180 181 182 |
val = of_getintprop_default(dma_dp->parent, "burst-sizes", 0xff); if (val != 0xff) bursts &= val; |
cd9ad58d4 [SCSI] SUNESP: Co... |
183 184 185 186 187 188 189 190 |
if (bursts == 0xff || (bursts & DMA_BURST16) == 0 || (bursts & DMA_BURST32) == 0) bursts = (DMA_BURST32 - 1); esp->bursts = bursts; } |
2dc115813 of/device: Replac... |
191 |
static void __devinit esp_sbus_get_props(struct esp *esp, struct platform_device *espdma) |
cd9ad58d4 [SCSI] SUNESP: Co... |
192 |
{ |
05bb5e93f sun_esp: Convert ... |
193 |
esp_get_scsi_id(esp, espdma); |
cd9ad58d4 [SCSI] SUNESP: Co... |
194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 |
esp_get_differential(esp); esp_get_clock_params(esp); esp_get_bursts(esp, espdma); } static void sbus_esp_write8(struct esp *esp, u8 val, unsigned long reg) { sbus_writeb(val, esp->regs + (reg * 4UL)); } static u8 sbus_esp_read8(struct esp *esp, unsigned long reg) { return sbus_readb(esp->regs + (reg * 4UL)); } static dma_addr_t sbus_esp_map_single(struct esp *esp, void *buf, size_t sz, int dir) { |
2dc115813 of/device: Replac... |
212 |
struct platform_device *op = esp->dev; |
7a715f460 sparc: Make SBUS ... |
213 |
|
05bb5e93f sun_esp: Convert ... |
214 |
return dma_map_single(&op->dev, buf, sz, dir); |
cd9ad58d4 [SCSI] SUNESP: Co... |
215 216 217 218 219 |
} static int sbus_esp_map_sg(struct esp *esp, struct scatterlist *sg, int num_sg, int dir) { |
2dc115813 of/device: Replac... |
220 |
struct platform_device *op = esp->dev; |
7a715f460 sparc: Make SBUS ... |
221 |
|
05bb5e93f sun_esp: Convert ... |
222 |
return dma_map_sg(&op->dev, sg, num_sg, dir); |
cd9ad58d4 [SCSI] SUNESP: Co... |
223 224 225 226 227 |
} static void sbus_esp_unmap_single(struct esp *esp, dma_addr_t addr, size_t sz, int dir) { |
2dc115813 of/device: Replac... |
228 |
struct platform_device *op = esp->dev; |
7a715f460 sparc: Make SBUS ... |
229 |
|
05bb5e93f sun_esp: Convert ... |
230 |
dma_unmap_single(&op->dev, addr, sz, dir); |
cd9ad58d4 [SCSI] SUNESP: Co... |
231 232 233 234 235 |
} static void sbus_esp_unmap_sg(struct esp *esp, struct scatterlist *sg, int num_sg, int dir) { |
2dc115813 of/device: Replac... |
236 |
struct platform_device *op = esp->dev; |
7a715f460 sparc: Make SBUS ... |
237 |
|
05bb5e93f sun_esp: Convert ... |
238 |
dma_unmap_sg(&op->dev, sg, num_sg, dir); |
cd9ad58d4 [SCSI] SUNESP: Co... |
239 240 241 242 243 244 245 246 247 248 249 250 251 |
} static int sbus_esp_irq_pending(struct esp *esp) { if (dma_read32(DMA_CSR) & (DMA_HNDL_INTR | DMA_HNDL_ERROR)) return 1; return 0; } static void sbus_esp_reset_dma(struct esp *esp) { int can_do_burst16, can_do_burst32, can_do_burst64; int can_do_sbus64, lim; |
2dc115813 of/device: Replac... |
252 |
struct platform_device *op; |
cd9ad58d4 [SCSI] SUNESP: Co... |
253 254 255 256 257 258 |
u32 val; can_do_burst16 = (esp->bursts & DMA_BURST16) != 0; can_do_burst32 = (esp->bursts & DMA_BURST32) != 0; can_do_burst64 = 0; can_do_sbus64 = 0; |
05bb5e93f sun_esp: Convert ... |
259 |
op = esp->dev; |
63237eeb5 sparc: Move SBUS ... |
260 |
if (sbus_can_dma_64bit()) |
cd9ad58d4 [SCSI] SUNESP: Co... |
261 |
can_do_sbus64 = 1; |
63237eeb5 sparc: Move SBUS ... |
262 |
if (sbus_can_burst64()) |
cd9ad58d4 [SCSI] SUNESP: Co... |
263 264 265 |
can_do_burst64 = (esp->bursts & DMA_BURST64) != 0; /* Put the DVMA into a known state. */ |
334ae6147 sparc: Kill SBUS ... |
266 |
if (esp->dmarev != dvmahme) { |
cd9ad58d4 [SCSI] SUNESP: Co... |
267 268 269 270 |
val = dma_read32(DMA_CSR); dma_write32(val | DMA_RST_SCSI, DMA_CSR); dma_write32(val & ~DMA_RST_SCSI, DMA_CSR); } |
334ae6147 sparc: Kill SBUS ... |
271 |
switch (esp->dmarev) { |
cd9ad58d4 [SCSI] SUNESP: Co... |
272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 |
case dvmahme: dma_write32(DMA_RESET_FAS366, DMA_CSR); dma_write32(DMA_RST_SCSI, DMA_CSR); esp->prev_hme_dmacsr = (DMA_PARITY_OFF | DMA_2CLKS | DMA_SCSI_DISAB | DMA_INT_ENAB); esp->prev_hme_dmacsr &= ~(DMA_ENABLE | DMA_ST_WRITE | DMA_BRST_SZ); if (can_do_burst64) esp->prev_hme_dmacsr |= DMA_BRST64; else if (can_do_burst32) esp->prev_hme_dmacsr |= DMA_BRST32; if (can_do_sbus64) { esp->prev_hme_dmacsr |= DMA_SCSI_SBUS64; |
05bb5e93f sun_esp: Convert ... |
289 |
sbus_set_sbus64(&op->dev, esp->bursts); |
cd9ad58d4 [SCSI] SUNESP: Co... |
290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 |
} lim = 1000; while (dma_read32(DMA_CSR) & DMA_PEND_READ) { if (--lim == 0) { printk(KERN_ALERT PFX "esp%d: DMA_PEND_READ " "will not clear! ", esp->host->unique_id); break; } udelay(1); } dma_write32(0, DMA_CSR); dma_write32(esp->prev_hme_dmacsr, DMA_CSR); dma_write32(0, DMA_ADDR); break; case dvmarev2: if (esp->rev != ESP100) { val = dma_read32(DMA_CSR); dma_write32(val | DMA_3CLKS, DMA_CSR); } break; case dvmarev3: val = dma_read32(DMA_CSR); val &= ~DMA_3CLKS; val |= DMA_2CLKS; if (can_do_burst32) { val &= ~DMA_BRST_SZ; val |= DMA_BRST32; } dma_write32(val, DMA_CSR); break; case dvmaesc1: val = dma_read32(DMA_CSR); val |= DMA_ADD_ENABLE; val &= ~DMA_BCNT_ENAB; if (!can_do_burst32 && can_do_burst16) { val |= DMA_ESC_BURST; } else { val &= ~(DMA_ESC_BURST); } dma_write32(val, DMA_CSR); break; default: break; } /* Enable interrupts. */ val = dma_read32(DMA_CSR); dma_write32(val | DMA_INT_ENAB, DMA_CSR); } static void sbus_esp_dma_drain(struct esp *esp) { u32 csr; int lim; |
334ae6147 sparc: Kill SBUS ... |
353 |
if (esp->dmarev == dvmahme) |
cd9ad58d4 [SCSI] SUNESP: Co... |
354 355 356 357 358 |
return; csr = dma_read32(DMA_CSR); if (!(csr & DMA_FIFO_ISDRAIN)) return; |
334ae6147 sparc: Kill SBUS ... |
359 |
if (esp->dmarev != dvmarev3 && esp->dmarev != dvmaesc1) |
cd9ad58d4 [SCSI] SUNESP: Co... |
360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 |
dma_write32(csr | DMA_FIFO_STDRAIN, DMA_CSR); lim = 1000; while (dma_read32(DMA_CSR) & DMA_FIFO_ISDRAIN) { if (--lim == 0) { printk(KERN_ALERT PFX "esp%d: DMA will not drain! ", esp->host->unique_id); break; } udelay(1); } } static void sbus_esp_dma_invalidate(struct esp *esp) { |
334ae6147 sparc: Kill SBUS ... |
376 |
if (esp->dmarev == dvmahme) { |
cd9ad58d4 [SCSI] SUNESP: Co... |
377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 |
dma_write32(DMA_RST_SCSI, DMA_CSR); esp->prev_hme_dmacsr = ((esp->prev_hme_dmacsr | (DMA_PARITY_OFF | DMA_2CLKS | DMA_SCSI_DISAB | DMA_INT_ENAB)) & ~(DMA_ST_WRITE | DMA_ENABLE)); dma_write32(0, DMA_CSR); dma_write32(esp->prev_hme_dmacsr, DMA_CSR); /* This is necessary to avoid having the SCSI channel * engine lock up on us. */ dma_write32(0, DMA_ADDR); } else { u32 val; int lim; lim = 1000; while ((val = dma_read32(DMA_CSR)) & DMA_PEND_READ) { if (--lim == 0) { printk(KERN_ALERT PFX "esp%d: DMA will not " "invalidate! ", esp->host->unique_id); break; } udelay(1); } val &= ~(DMA_ENABLE | DMA_ST_WRITE | DMA_BCNT_ENAB); val |= DMA_FIFO_INV; dma_write32(val, DMA_CSR); val &= ~DMA_FIFO_INV; dma_write32(val, DMA_CSR); } } static void sbus_esp_send_dma_cmd(struct esp *esp, u32 addr, u32 esp_count, u32 dma_count, int write, u8 cmd) { u32 csr; BUG_ON(!(cmd & ESP_CMD_DMA)); sbus_esp_write8(esp, (esp_count >> 0) & 0xff, ESP_TCLOW); sbus_esp_write8(esp, (esp_count >> 8) & 0xff, ESP_TCMED); if (esp->rev == FASHME) { sbus_esp_write8(esp, (esp_count >> 16) & 0xff, FAS_RLO); sbus_esp_write8(esp, 0, FAS_RHI); scsi_esp_cmd(esp, cmd); csr = esp->prev_hme_dmacsr; csr |= DMA_SCSI_DISAB | DMA_ENABLE; if (write) csr |= DMA_ST_WRITE; else csr &= ~DMA_ST_WRITE; esp->prev_hme_dmacsr = csr; dma_write32(dma_count, DMA_COUNT); dma_write32(addr, DMA_ADDR); dma_write32(csr, DMA_CSR); } else { csr = dma_read32(DMA_CSR); csr |= DMA_ENABLE; if (write) csr |= DMA_ST_WRITE; else csr &= ~DMA_ST_WRITE; dma_write32(csr, DMA_CSR); |
334ae6147 sparc: Kill SBUS ... |
448 |
if (esp->dmarev == dvmaesc1) { |
cd9ad58d4 [SCSI] SUNESP: Co... |
449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 |
u32 end = PAGE_ALIGN(addr + dma_count + 16U); dma_write32(end - addr, DMA_COUNT); } dma_write32(addr, DMA_ADDR); scsi_esp_cmd(esp, cmd); } } static int sbus_esp_dma_error(struct esp *esp) { u32 csr = dma_read32(DMA_CSR); if (csr & DMA_HNDL_ERROR) return 1; return 0; } static const struct esp_driver_ops sbus_esp_ops = { .esp_write8 = sbus_esp_write8, .esp_read8 = sbus_esp_read8, .map_single = sbus_esp_map_single, .map_sg = sbus_esp_map_sg, .unmap_single = sbus_esp_unmap_single, .unmap_sg = sbus_esp_unmap_sg, .irq_pending = sbus_esp_irq_pending, .reset_dma = sbus_esp_reset_dma, .dma_drain = sbus_esp_dma_drain, .dma_invalidate = sbus_esp_dma_invalidate, .send_dma_cmd = sbus_esp_send_dma_cmd, .dma_error = sbus_esp_dma_error, }; |
2dc115813 of/device: Replac... |
483 484 |
static int __devinit esp_sbus_probe_one(struct platform_device *op, struct platform_device *espdma, |
cd9ad58d4 [SCSI] SUNESP: Co... |
485 486 487 488 489 490 491 492 493 494 495 496 497 498 |
int hme) { struct scsi_host_template *tpnt = &scsi_esp_template; struct Scsi_Host *host; struct esp *esp; int err; host = scsi_host_alloc(tpnt, sizeof(struct esp)); err = -ENOMEM; if (!host) goto fail; host->max_id = (hme ? 16 : 8); |
2b14ec787 [SCSI] esp: use s... |
499 |
esp = shost_priv(host); |
cd9ad58d4 [SCSI] SUNESP: Co... |
500 501 |
esp->host = host; |
05bb5e93f sun_esp: Convert ... |
502 |
esp->dev = op; |
cd9ad58d4 [SCSI] SUNESP: Co... |
503 504 505 506 |
esp->ops = &sbus_esp_ops; if (hme) esp->flags |= ESP_FLAG_WIDE_CAPABLE; |
334ae6147 sparc: Kill SBUS ... |
507 |
err = esp_sbus_setup_dma(esp, espdma); |
cd9ad58d4 [SCSI] SUNESP: Co... |
508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 |
if (err < 0) goto fail_unlink; err = esp_sbus_map_regs(esp, hme); if (err < 0) goto fail_unlink; err = esp_sbus_map_command_block(esp); if (err < 0) goto fail_unmap_regs; err = esp_sbus_register_irq(esp); if (err < 0) goto fail_unmap_command_block; esp_sbus_get_props(esp, espdma); /* Before we try to touch the ESP chip, ESC1 dma can * come up with the reset bit set, so make sure that * is clear first. */ |
334ae6147 sparc: Kill SBUS ... |
529 |
if (esp->dmarev == dvmaesc1) { |
cd9ad58d4 [SCSI] SUNESP: Co... |
530 531 532 533 |
u32 val = dma_read32(DMA_CSR); dma_write32(val & ~DMA_RST_SCSI, DMA_CSR); } |
05bb5e93f sun_esp: Convert ... |
534 |
dev_set_drvdata(&op->dev, esp); |
cd9ad58d4 [SCSI] SUNESP: Co... |
535 |
|
05bb5e93f sun_esp: Convert ... |
536 |
err = scsi_esp_register(esp, &op->dev); |
cd9ad58d4 [SCSI] SUNESP: Co... |
537 538 539 540 541 542 543 544 |
if (err) goto fail_free_irq; return 0; fail_free_irq: free_irq(host->irq, esp); fail_unmap_command_block: |
05bb5e93f sun_esp: Convert ... |
545 |
dma_free_coherent(&op->dev, 16, |
738f2b7b8 sparc: Convert al... |
546 547 |
esp->command_block, esp->command_block_dma); |
cd9ad58d4 [SCSI] SUNESP: Co... |
548 |
fail_unmap_regs: |
05bb5e93f sun_esp: Convert ... |
549 |
of_iounmap(&op->resource[(hme ? 1 : 0)], esp->regs, SBUS_ESP_REG_SIZE); |
cd9ad58d4 [SCSI] SUNESP: Co... |
550 551 552 553 554 |
fail_unlink: scsi_host_put(host); fail: return err; } |
4ebb24f70 dt/sparc: Elimina... |
555 |
static int __devinit esp_sbus_probe(struct platform_device *op) |
cd9ad58d4 [SCSI] SUNESP: Co... |
556 |
{ |
334ae6147 sparc: Kill SBUS ... |
557 |
struct device_node *dma_node = NULL; |
61c7a080a of: Always use 's... |
558 |
struct device_node *dp = op->dev.of_node; |
2dc115813 of/device: Replac... |
559 |
struct platform_device *dma_of = NULL; |
cd9ad58d4 [SCSI] SUNESP: Co... |
560 561 562 563 564 |
int hme = 0; if (dp->parent && (!strcmp(dp->parent->name, "espdma") || !strcmp(dp->parent->name, "dma"))) |
334ae6147 sparc: Kill SBUS ... |
565 |
dma_node = dp->parent; |
cd9ad58d4 [SCSI] SUNESP: Co... |
566 |
else if (!strcmp(dp->name, "SUNW,fas")) { |
61c7a080a of: Always use 's... |
567 |
dma_node = op->dev.of_node; |
cd9ad58d4 [SCSI] SUNESP: Co... |
568 569 |
hme = 1; } |
334ae6147 sparc: Kill SBUS ... |
570 571 572 573 |
if (dma_node) dma_of = of_find_device_by_node(dma_node); if (!dma_of) return -ENODEV; |
cd9ad58d4 [SCSI] SUNESP: Co... |
574 |
|
05bb5e93f sun_esp: Convert ... |
575 |
return esp_sbus_probe_one(op, dma_of, hme); |
cd9ad58d4 [SCSI] SUNESP: Co... |
576 |
} |
2dc115813 of/device: Replac... |
577 |
static int __devexit esp_sbus_remove(struct platform_device *op) |
cd9ad58d4 [SCSI] SUNESP: Co... |
578 |
{ |
05bb5e93f sun_esp: Convert ... |
579 |
struct esp *esp = dev_get_drvdata(&op->dev); |
2dc115813 of/device: Replac... |
580 |
struct platform_device *dma_of = esp->dma; |
cd9ad58d4 [SCSI] SUNESP: Co... |
581 |
unsigned int irq = esp->host->irq; |
05bb5e93f sun_esp: Convert ... |
582 |
bool is_hme; |
cd9ad58d4 [SCSI] SUNESP: Co... |
583 584 585 586 587 588 589 590 591 |
u32 val; scsi_esp_unregister(esp); /* Disable interrupts. */ val = dma_read32(DMA_CSR); dma_write32(val & ~DMA_INT_ENAB, DMA_CSR); free_irq(irq, esp); |
05bb5e93f sun_esp: Convert ... |
592 593 594 595 |
is_hme = (esp->dmarev == dvmahme); dma_free_coherent(&op->dev, 16, |
738f2b7b8 sparc: Convert al... |
596 597 |
esp->command_block, esp->command_block_dma); |
05bb5e93f sun_esp: Convert ... |
598 599 |
of_iounmap(&op->resource[(is_hme ? 1 : 0)], esp->regs, SBUS_ESP_REG_SIZE); |
334ae6147 sparc: Kill SBUS ... |
600 601 |
of_iounmap(&dma_of->resource[0], esp->dma_regs, resource_size(&dma_of->resource[0])); |
cd9ad58d4 [SCSI] SUNESP: Co... |
602 603 |
scsi_host_put(esp->host); |
05bb5e93f sun_esp: Convert ... |
604 |
dev_set_drvdata(&op->dev, NULL); |
cd9ad58d4 [SCSI] SUNESP: Co... |
605 606 |
return 0; } |
fd098316e sparc: Annotate o... |
607 |
static const struct of_device_id esp_match[] = { |
cd9ad58d4 [SCSI] SUNESP: Co... |
608 609 610 611 612 613 614 615 616 617 618 619 |
{ .name = "SUNW,esp", }, { .name = "SUNW,fas", }, { .name = "esp", }, {}, }; MODULE_DEVICE_TABLE(of, esp_match); |
4ebb24f70 dt/sparc: Elimina... |
620 |
static struct platform_driver esp_sbus_driver = { |
4018294b5 of: Remove duplic... |
621 622 623 624 625 |
.driver = { .name = "esp", .owner = THIS_MODULE, .of_match_table = esp_match, }, |
cd9ad58d4 [SCSI] SUNESP: Co... |
626 627 628 629 630 631 |
.probe = esp_sbus_probe, .remove = __devexit_p(esp_sbus_remove), }; static int __init sunesp_init(void) { |
4ebb24f70 dt/sparc: Elimina... |
632 |
return platform_driver_register(&esp_sbus_driver); |
cd9ad58d4 [SCSI] SUNESP: Co... |
633 634 635 636 |
} static void __exit sunesp_exit(void) { |
4ebb24f70 dt/sparc: Elimina... |
637 |
platform_driver_unregister(&esp_sbus_driver); |
cd9ad58d4 [SCSI] SUNESP: Co... |
638 639 640 641 642 643 644 645 646 |
} MODULE_DESCRIPTION("Sun ESP SCSI driver"); MODULE_AUTHOR("David S. Miller (davem@davemloft.net)"); MODULE_LICENSE("GPL"); MODULE_VERSION(DRV_VERSION); module_init(sunesp_init); module_exit(sunesp_exit); |