blob: 4a90eaf7cb63ac5a7e8f874ca9868f596924567a [file] [log] [blame]
Finn Thain6fe07aa2008-04-25 10:06:05 -05001/* mac_esp.c: ESP front-end for Macintosh Quadra systems.
2 *
3 * Adapted from jazz_esp.c and the old mac_esp.c.
4 *
5 * The pseudo DMA algorithm is based on the one used in NetBSD.
6 * See sys/arch/mac68k/obio/esp.c for some background information.
7 *
8 * Copyright (C) 2007-2008 Finn Thain
9 */
10
11#include <linux/kernel.h>
12#include <linux/types.h>
13#include <linux/module.h>
14#include <linux/init.h>
15#include <linux/interrupt.h>
16#include <linux/platform_device.h>
17#include <linux/dma-mapping.h>
18#include <linux/scatterlist.h>
19#include <linux/delay.h>
20#include <linux/io.h>
21#include <linux/nubus.h>
22
23#include <asm/irq.h>
24#include <asm/dma.h>
Finn Thain6fe07aa2008-04-25 10:06:05 -050025#include <asm/macints.h>
26#include <asm/macintosh.h>
27
28#include <scsi/scsi_host.h>
29
30#include "esp_scsi.h"
31
32#define DRV_MODULE_NAME "mac_esp"
33#define PFX DRV_MODULE_NAME ": "
34#define DRV_VERSION "1.000"
35#define DRV_MODULE_RELDATE "Sept 15, 2007"
36
37#define MAC_ESP_IO_BASE 0x50F00000
38#define MAC_ESP_REGS_QUADRA (MAC_ESP_IO_BASE + 0x10000)
39#define MAC_ESP_REGS_QUADRA2 (MAC_ESP_IO_BASE + 0xF000)
40#define MAC_ESP_REGS_QUADRA3 (MAC_ESP_IO_BASE + 0x18000)
41#define MAC_ESP_REGS_SPACING 0x402
42#define MAC_ESP_PDMA_REG 0xF9800024
43#define MAC_ESP_PDMA_REG_SPACING 0x4
44#define MAC_ESP_PDMA_IO_OFFSET 0x100
45
46#define esp_read8(REG) mac_esp_read8(esp, REG)
47#define esp_write8(VAL, REG) mac_esp_write8(esp, VAL, REG)
48
49struct mac_esp_priv {
50 struct esp *esp;
51 void __iomem *pdma_regs;
52 void __iomem *pdma_io;
53 int error;
54};
Finn Thainda244652008-11-17 21:37:45 +010055static struct esp *esp_chips[2];
Finn Thain6fe07aa2008-04-25 10:06:05 -050056
57#define MAC_ESP_GET_PRIV(esp) ((struct mac_esp_priv *) \
58 platform_get_drvdata((struct platform_device *) \
59 (esp->dev)))
60
61static inline void mac_esp_write8(struct esp *esp, u8 val, unsigned long reg)
62{
63 nubus_writeb(val, esp->regs + reg * 16);
64}
65
66static inline u8 mac_esp_read8(struct esp *esp, unsigned long reg)
67{
68 return nubus_readb(esp->regs + reg * 16);
69}
70
71/* For pseudo DMA and PIO we need the virtual address
72 * so this address mapping is the identity mapping.
73 */
74
75static dma_addr_t mac_esp_map_single(struct esp *esp, void *buf,
76 size_t sz, int dir)
77{
78 return (dma_addr_t)buf;
79}
80
81static int mac_esp_map_sg(struct esp *esp, struct scatterlist *sg,
82 int num_sg, int dir)
83{
84 int i;
85
86 for (i = 0; i < num_sg; i++)
87 sg[i].dma_address = (u32)sg_virt(&sg[i]);
88 return num_sg;
89}
90
91static void mac_esp_unmap_single(struct esp *esp, dma_addr_t addr,
92 size_t sz, int dir)
93{
94 /* Nothing to do. */
95}
96
97static void mac_esp_unmap_sg(struct esp *esp, struct scatterlist *sg,
98 int num_sg, int dir)
99{
100 /* Nothing to do. */
101}
102
103static void mac_esp_reset_dma(struct esp *esp)
104{
105 /* Nothing to do. */
106}
107
108static void mac_esp_dma_drain(struct esp *esp)
109{
110 /* Nothing to do. */
111}
112
113static void mac_esp_dma_invalidate(struct esp *esp)
114{
115 /* Nothing to do. */
116}
117
118static int mac_esp_dma_error(struct esp *esp)
119{
120 return MAC_ESP_GET_PRIV(esp)->error;
121}
122
123static inline int mac_esp_wait_for_empty_fifo(struct esp *esp)
124{
125 struct mac_esp_priv *mep = MAC_ESP_GET_PRIV(esp);
126 int i = 500000;
127
128 do {
129 if (!(esp_read8(ESP_FFLAGS) & ESP_FF_FBYTES))
130 return 0;
131
132 if (esp_read8(ESP_STATUS) & ESP_STAT_INTR)
133 return 1;
134
135 udelay(2);
136 } while (--i);
137
138 printk(KERN_ERR PFX "FIFO is not empty (sreg %02x)\n",
139 esp_read8(ESP_STATUS));
140 mep->error = 1;
141 return 1;
142}
143
144static inline int mac_esp_wait_for_dreq(struct esp *esp)
145{
146 struct mac_esp_priv *mep = MAC_ESP_GET_PRIV(esp);
147 int i = 500000;
148
149 do {
150 if (mep->pdma_regs == NULL) {
151 if (mac_irq_pending(IRQ_MAC_SCSIDRQ))
152 return 0;
153 } else {
154 if (nubus_readl(mep->pdma_regs) & 0x200)
155 return 0;
156 }
157
158 if (esp_read8(ESP_STATUS) & ESP_STAT_INTR)
159 return 1;
160
161 udelay(2);
162 } while (--i);
163
164 printk(KERN_ERR PFX "PDMA timeout (sreg %02x)\n",
165 esp_read8(ESP_STATUS));
166 mep->error = 1;
167 return 1;
168}
169
170#define MAC_ESP_PDMA_LOOP(operands) \
171 asm volatile ( \
Finn Thain09e13e92008-11-17 21:37:07 +0100172 " tstw %1 \n" \
Finn Thain6fe07aa2008-04-25 10:06:05 -0500173 " jbeq 20f \n" \
174 "1: movew " operands " \n" \
175 "2: movew " operands " \n" \
176 "3: movew " operands " \n" \
177 "4: movew " operands " \n" \
178 "5: movew " operands " \n" \
179 "6: movew " operands " \n" \
180 "7: movew " operands " \n" \
181 "8: movew " operands " \n" \
182 "9: movew " operands " \n" \
183 "10: movew " operands " \n" \
184 "11: movew " operands " \n" \
185 "12: movew " operands " \n" \
186 "13: movew " operands " \n" \
187 "14: movew " operands " \n" \
188 "15: movew " operands " \n" \
189 "16: movew " operands " \n" \
Finn Thain09e13e92008-11-17 21:37:07 +0100190 " subqw #1,%1 \n" \
Finn Thain6fe07aa2008-04-25 10:06:05 -0500191 " jbne 1b \n" \
Finn Thain09e13e92008-11-17 21:37:07 +0100192 "20: tstw %2 \n" \
Finn Thain6fe07aa2008-04-25 10:06:05 -0500193 " jbeq 30f \n" \
194 "21: movew " operands " \n" \
Finn Thain09e13e92008-11-17 21:37:07 +0100195 " subqw #1,%2 \n" \
Finn Thain6fe07aa2008-04-25 10:06:05 -0500196 " jbne 21b \n" \
Finn Thain09e13e92008-11-17 21:37:07 +0100197 "30: tstw %3 \n" \
Finn Thain6fe07aa2008-04-25 10:06:05 -0500198 " jbeq 40f \n" \
199 "31: moveb " operands " \n" \
200 "32: nop \n" \
201 "40: \n" \
202 " \n" \
203 " .section __ex_table,\"a\" \n" \
204 " .align 4 \n" \
205 " .long 1b,40b \n" \
206 " .long 2b,40b \n" \
207 " .long 3b,40b \n" \
208 " .long 4b,40b \n" \
209 " .long 5b,40b \n" \
210 " .long 6b,40b \n" \
211 " .long 7b,40b \n" \
212 " .long 8b,40b \n" \
213 " .long 9b,40b \n" \
214 " .long 10b,40b \n" \
215 " .long 11b,40b \n" \
216 " .long 12b,40b \n" \
217 " .long 13b,40b \n" \
218 " .long 14b,40b \n" \
219 " .long 15b,40b \n" \
220 " .long 16b,40b \n" \
221 " .long 21b,40b \n" \
222 " .long 31b,40b \n" \
223 " .long 32b,40b \n" \
224 " .previous \n" \
Finn Thain09e13e92008-11-17 21:37:07 +0100225 : "+a" (addr), "+r" (count32), "+r" (count2) \
226 : "g" (count1), "a" (mep->pdma_io))
Finn Thain6fe07aa2008-04-25 10:06:05 -0500227
228static void mac_esp_send_pdma_cmd(struct esp *esp, u32 addr, u32 esp_count,
229 u32 dma_count, int write, u8 cmd)
230{
231 struct mac_esp_priv *mep = MAC_ESP_GET_PRIV(esp);
232 unsigned long flags;
233
234 local_irq_save(flags);
235
236 mep->error = 0;
237
238 if (!write)
239 scsi_esp_cmd(esp, ESP_CMD_FLUSH);
240
241 esp_write8((esp_count >> 0) & 0xFF, ESP_TCLOW);
242 esp_write8((esp_count >> 8) & 0xFF, ESP_TCMED);
243
244 scsi_esp_cmd(esp, cmd);
245
246 do {
247 unsigned int count32 = esp_count >> 5;
248 unsigned int count2 = (esp_count & 0x1F) >> 1;
Finn Thain09e13e92008-11-17 21:37:07 +0100249 unsigned int count1 = esp_count & 1;
Finn Thain6fe07aa2008-04-25 10:06:05 -0500250 unsigned int start_addr = addr;
251
252 if (mac_esp_wait_for_dreq(esp))
253 break;
254
255 if (write) {
Finn Thain09e13e92008-11-17 21:37:07 +0100256 MAC_ESP_PDMA_LOOP("%4@,%0@+");
Finn Thain6fe07aa2008-04-25 10:06:05 -0500257
258 esp_count -= addr - start_addr;
259 } else {
260 unsigned int n;
261
Finn Thain09e13e92008-11-17 21:37:07 +0100262 MAC_ESP_PDMA_LOOP("%0@+,%4@");
Finn Thain6fe07aa2008-04-25 10:06:05 -0500263
264 if (mac_esp_wait_for_empty_fifo(esp))
265 break;
266
267 n = (esp_read8(ESP_TCMED) << 8) + esp_read8(ESP_TCLOW);
268 addr = start_addr + esp_count - n;
269 esp_count = n;
270 }
271 } while (esp_count);
272
273 local_irq_restore(flags);
274}
275
276/*
277 * Programmed IO routines follow.
278 */
279
Finn Thain02507a82009-12-05 12:30:42 +1100280static inline unsigned int mac_esp_wait_for_fifo(struct esp *esp)
Finn Thain6fe07aa2008-04-25 10:06:05 -0500281{
282 int i = 500000;
283
284 do {
Finn Thain02507a82009-12-05 12:30:42 +1100285 unsigned int fbytes = esp_read8(ESP_FFLAGS) & ESP_FF_FBYTES;
286
287 if (fbytes)
288 return fbytes;
Finn Thain6fe07aa2008-04-25 10:06:05 -0500289
290 udelay(2);
291 } while (--i);
292
293 printk(KERN_ERR PFX "FIFO is empty (sreg %02x)\n",
294 esp_read8(ESP_STATUS));
Finn Thain02507a82009-12-05 12:30:42 +1100295 return 0;
Finn Thain6fe07aa2008-04-25 10:06:05 -0500296}
297
298static inline int mac_esp_wait_for_intr(struct esp *esp)
299{
Finn Thain02507a82009-12-05 12:30:42 +1100300 struct mac_esp_priv *mep = MAC_ESP_GET_PRIV(esp);
Finn Thain6fe07aa2008-04-25 10:06:05 -0500301 int i = 500000;
302
303 do {
304 esp->sreg = esp_read8(ESP_STATUS);
305 if (esp->sreg & ESP_STAT_INTR)
306 return 0;
307
308 udelay(2);
309 } while (--i);
310
311 printk(KERN_ERR PFX "IRQ timeout (sreg %02x)\n", esp->sreg);
Finn Thain02507a82009-12-05 12:30:42 +1100312 mep->error = 1;
Finn Thain6fe07aa2008-04-25 10:06:05 -0500313 return 1;
314}
315
316#define MAC_ESP_PIO_LOOP(operands, reg1) \
317 asm volatile ( \
318 "1: moveb " operands " \n" \
319 " subqw #1,%1 \n" \
320 " jbne 1b \n" \
321 : "+a" (addr), "+r" (reg1) \
322 : "a" (fifo))
323
324#define MAC_ESP_PIO_FILL(operands, reg1) \
325 asm volatile ( \
326 " moveb " operands " \n" \
327 " moveb " operands " \n" \
328 " moveb " operands " \n" \
329 " moveb " operands " \n" \
330 " moveb " operands " \n" \
331 " moveb " operands " \n" \
332 " moveb " operands " \n" \
333 " moveb " operands " \n" \
334 " moveb " operands " \n" \
335 " moveb " operands " \n" \
336 " moveb " operands " \n" \
337 " moveb " operands " \n" \
338 " moveb " operands " \n" \
339 " moveb " operands " \n" \
340 " moveb " operands " \n" \
341 " moveb " operands " \n" \
342 " subqw #8,%1 \n" \
343 " subqw #8,%1 \n" \
344 : "+a" (addr), "+r" (reg1) \
345 : "a" (fifo))
346
347#define MAC_ESP_FIFO_SIZE 16
348
349static void mac_esp_send_pio_cmd(struct esp *esp, u32 addr, u32 esp_count,
350 u32 dma_count, int write, u8 cmd)
351{
Finn Thain6fe07aa2008-04-25 10:06:05 -0500352 struct mac_esp_priv *mep = MAC_ESP_GET_PRIV(esp);
353 u8 *fifo = esp->regs + ESP_FDATA * 16;
354
Finn Thain02507a82009-12-05 12:30:42 +1100355 disable_irq(esp->host->irq);
Finn Thain6fe07aa2008-04-25 10:06:05 -0500356
357 cmd &= ~ESP_CMD_DMA;
358 mep->error = 0;
359
360 if (write) {
361 scsi_esp_cmd(esp, cmd);
362
Finn Thain02507a82009-12-05 12:30:42 +1100363 while (1) {
364 unsigned int n;
365
366 n = mac_esp_wait_for_fifo(esp);
367 if (!n)
368 break;
369
370 if (n > esp_count)
371 n = esp_count;
372 esp_count -= n;
373
374 MAC_ESP_PIO_LOOP("%2@,%0@+", n);
375
376 if (!esp_count)
377 break;
378
379 if (mac_esp_wait_for_intr(esp))
380 break;
381
382 if (((esp->sreg & ESP_STAT_PMASK) != ESP_DIP) &&
383 ((esp->sreg & ESP_STAT_PMASK) != ESP_MIP))
384 break;
385
386 esp->ireg = esp_read8(ESP_INTRPT);
387 if ((esp->ireg & (ESP_INTR_DC | ESP_INTR_BSERV)) !=
388 ESP_INTR_BSERV)
389 break;
390
391 scsi_esp_cmd(esp, ESP_CMD_TI);
Finn Thain6fe07aa2008-04-25 10:06:05 -0500392 }
393 } else {
394 scsi_esp_cmd(esp, ESP_CMD_FLUSH);
395
396 if (esp_count >= MAC_ESP_FIFO_SIZE)
397 MAC_ESP_PIO_FILL("%0@+,%2@", esp_count);
398 else
399 MAC_ESP_PIO_LOOP("%0@+,%2@", esp_count);
400
401 scsi_esp_cmd(esp, cmd);
Finn Thain6fe07aa2008-04-25 10:06:05 -0500402
Finn Thain02507a82009-12-05 12:30:42 +1100403 while (esp_count) {
404 unsigned int n;
Finn Thain6fe07aa2008-04-25 10:06:05 -0500405
Finn Thain02507a82009-12-05 12:30:42 +1100406 if (mac_esp_wait_for_intr(esp))
Finn Thain6fe07aa2008-04-25 10:06:05 -0500407 break;
408
Finn Thain02507a82009-12-05 12:30:42 +1100409 if (((esp->sreg & ESP_STAT_PMASK) != ESP_DOP) &&
410 ((esp->sreg & ESP_STAT_PMASK) != ESP_MOP))
411 break;
Finn Thain6fe07aa2008-04-25 10:06:05 -0500412
Finn Thain6fe07aa2008-04-25 10:06:05 -0500413 esp->ireg = esp_read8(ESP_INTRPT);
Finn Thain02507a82009-12-05 12:30:42 +1100414 if ((esp->ireg & (ESP_INTR_DC | ESP_INTR_BSERV)) !=
415 ESP_INTR_BSERV)
Finn Thain6fe07aa2008-04-25 10:06:05 -0500416 break;
417
Finn Thain02507a82009-12-05 12:30:42 +1100418 n = MAC_ESP_FIFO_SIZE -
419 (esp_read8(ESP_FFLAGS) & ESP_FF_FBYTES);
Finn Thain6fe07aa2008-04-25 10:06:05 -0500420 if (n > esp_count)
421 n = esp_count;
422
423 if (n == MAC_ESP_FIFO_SIZE) {
424 MAC_ESP_PIO_FILL("%0@+,%2@", esp_count);
425 } else {
426 esp_count -= n;
427 MAC_ESP_PIO_LOOP("%0@+,%2@", n);
428 }
429
430 scsi_esp_cmd(esp, ESP_CMD_TI);
431 }
432 }
433
Finn Thain02507a82009-12-05 12:30:42 +1100434 enable_irq(esp->host->irq);
Finn Thain6fe07aa2008-04-25 10:06:05 -0500435}
436
437static int mac_esp_irq_pending(struct esp *esp)
438{
439 if (esp_read8(ESP_STATUS) & ESP_STAT_INTR)
440 return 1;
441 return 0;
442}
443
444static u32 mac_esp_dma_length_limit(struct esp *esp, u32 dma_addr, u32 dma_len)
445{
446 return dma_len > 0xFFFF ? 0xFFFF : dma_len;
447}
448
Finn Thainda244652008-11-17 21:37:45 +0100449static irqreturn_t mac_scsi_esp_intr(int irq, void *dev_id)
450{
451 int got_intr;
452
453 /*
454 * This is an edge triggered IRQ, so we have to be careful to
455 * avoid missing a transition when it is shared by two ESP devices.
456 */
457
458 do {
459 got_intr = 0;
460 if (esp_chips[0] &&
461 (mac_esp_read8(esp_chips[0], ESP_STATUS) & ESP_STAT_INTR)) {
462 (void)scsi_esp_intr(irq, esp_chips[0]);
463 got_intr = 1;
464 }
465 if (esp_chips[1] &&
466 (mac_esp_read8(esp_chips[1], ESP_STATUS) & ESP_STAT_INTR)) {
467 (void)scsi_esp_intr(irq, esp_chips[1]);
468 got_intr = 1;
469 }
470 } while (got_intr);
471
472 return IRQ_HANDLED;
473}
474
Finn Thain6fe07aa2008-04-25 10:06:05 -0500475static struct esp_driver_ops mac_esp_ops = {
476 .esp_write8 = mac_esp_write8,
477 .esp_read8 = mac_esp_read8,
478 .map_single = mac_esp_map_single,
479 .map_sg = mac_esp_map_sg,
480 .unmap_single = mac_esp_unmap_single,
481 .unmap_sg = mac_esp_unmap_sg,
482 .irq_pending = mac_esp_irq_pending,
483 .dma_length_limit = mac_esp_dma_length_limit,
484 .reset_dma = mac_esp_reset_dma,
485 .dma_drain = mac_esp_dma_drain,
486 .dma_invalidate = mac_esp_dma_invalidate,
487 .send_dma_cmd = mac_esp_send_pdma_cmd,
488 .dma_error = mac_esp_dma_error,
489};
490
491static int __devinit esp_mac_probe(struct platform_device *dev)
492{
493 struct scsi_host_template *tpnt = &scsi_esp_template;
494 struct Scsi_Host *host;
495 struct esp *esp;
496 int err;
Finn Thain6fe07aa2008-04-25 10:06:05 -0500497 struct mac_esp_priv *mep;
498
499 if (!MACH_IS_MAC)
500 return -ENODEV;
501
Finn Thaincff75f12009-11-04 00:41:35 +1100502 if (dev->id > 1)
Finn Thain6fe07aa2008-04-25 10:06:05 -0500503 return -ENODEV;
504
505 host = scsi_host_alloc(tpnt, sizeof(struct esp));
506
507 err = -ENOMEM;
508 if (!host)
509 goto fail;
510
511 host->max_id = 8;
512 host->use_clustering = DISABLE_CLUSTERING;
513 esp = shost_priv(host);
514
515 esp->host = host;
516 esp->dev = dev;
517
518 esp->command_block = kzalloc(16, GFP_KERNEL);
519 if (!esp->command_block)
520 goto fail_unlink;
521 esp->command_block_dma = (dma_addr_t)esp->command_block;
522
523 esp->scsi_id = 7;
524 host->this_id = esp->scsi_id;
525 esp->scsi_id_mask = 1 << esp->scsi_id;
526
527 mep = kzalloc(sizeof(struct mac_esp_priv), GFP_KERNEL);
528 if (!mep)
529 goto fail_free_command_block;
530 mep->esp = esp;
531 platform_set_drvdata(dev, mep);
532
533 switch (macintosh_config->scsi_type) {
534 case MAC_SCSI_QUADRA:
535 esp->cfreq = 16500000;
536 esp->regs = (void __iomem *)MAC_ESP_REGS_QUADRA;
537 mep->pdma_io = esp->regs + MAC_ESP_PDMA_IO_OFFSET;
538 mep->pdma_regs = NULL;
539 break;
540 case MAC_SCSI_QUADRA2:
541 esp->cfreq = 25000000;
542 esp->regs = (void __iomem *)(MAC_ESP_REGS_QUADRA2 +
543 dev->id * MAC_ESP_REGS_SPACING);
544 mep->pdma_io = esp->regs + MAC_ESP_PDMA_IO_OFFSET;
545 mep->pdma_regs = (void __iomem *)(MAC_ESP_PDMA_REG +
546 dev->id * MAC_ESP_PDMA_REG_SPACING);
547 nubus_writel(0x1d1, mep->pdma_regs);
548 break;
549 case MAC_SCSI_QUADRA3:
550 /* These quadras have a real DMA controller (the PSC) but we
551 * don't know how to drive it so we must use PIO instead.
552 */
553 esp->cfreq = 25000000;
554 esp->regs = (void __iomem *)MAC_ESP_REGS_QUADRA3;
555 mep->pdma_io = NULL;
556 mep->pdma_regs = NULL;
557 break;
558 }
559
560 esp->ops = &mac_esp_ops;
561 if (mep->pdma_io == NULL) {
562 printk(KERN_INFO PFX "using PIO for controller %d\n", dev->id);
563 esp_write8(0, ESP_TCLOW);
564 esp_write8(0, ESP_TCMED);
565 esp->flags = ESP_FLAG_DISABLE_SYNC;
566 mac_esp_ops.send_dma_cmd = mac_esp_send_pio_cmd;
567 } else {
568 printk(KERN_INFO PFX "using PDMA for controller %d\n", dev->id);
569 }
570
571 host->irq = IRQ_MAC_SCSI;
Finn Thainda244652008-11-17 21:37:45 +0100572 esp_chips[dev->id] = esp;
573 mb();
574 if (esp_chips[!dev->id] == NULL) {
575 err = request_irq(host->irq, mac_scsi_esp_intr, 0,
576 "Mac ESP", NULL);
577 if (err < 0) {
578 esp_chips[dev->id] = NULL;
579 goto fail_free_priv;
580 }
581 }
Finn Thain6fe07aa2008-04-25 10:06:05 -0500582
583 err = scsi_esp_register(esp, &dev->dev);
584 if (err)
585 goto fail_free_irq;
586
587 return 0;
588
589fail_free_irq:
Finn Thainda244652008-11-17 21:37:45 +0100590 if (esp_chips[!dev->id] == NULL)
591 free_irq(host->irq, esp);
Finn Thain6fe07aa2008-04-25 10:06:05 -0500592fail_free_priv:
593 kfree(mep);
594fail_free_command_block:
595 kfree(esp->command_block);
596fail_unlink:
597 scsi_host_put(host);
598fail:
599 return err;
600}
601
602static int __devexit esp_mac_remove(struct platform_device *dev)
603{
604 struct mac_esp_priv *mep = platform_get_drvdata(dev);
605 struct esp *esp = mep->esp;
606 unsigned int irq = esp->host->irq;
607
608 scsi_esp_unregister(esp);
609
Finn Thainda244652008-11-17 21:37:45 +0100610 esp_chips[dev->id] = NULL;
611 if (!(esp_chips[0] || esp_chips[1]))
612 free_irq(irq, NULL);
Finn Thain6fe07aa2008-04-25 10:06:05 -0500613
614 kfree(mep);
615
616 kfree(esp->command_block);
617
618 scsi_host_put(esp->host);
619
620 return 0;
621}
622
623static struct platform_driver esp_mac_driver = {
624 .probe = esp_mac_probe,
625 .remove = __devexit_p(esp_mac_remove),
626 .driver = {
Finn Thaincff75f12009-11-04 00:41:35 +1100627 .name = DRV_MODULE_NAME,
628 .owner = THIS_MODULE,
Finn Thain6fe07aa2008-04-25 10:06:05 -0500629 },
630};
631
632static int __init mac_esp_init(void)
633{
Finn Thaincff75f12009-11-04 00:41:35 +1100634 return platform_driver_register(&esp_mac_driver);
Finn Thain6fe07aa2008-04-25 10:06:05 -0500635}
636
637static void __exit mac_esp_exit(void)
638{
639 platform_driver_unregister(&esp_mac_driver);
Finn Thain6fe07aa2008-04-25 10:06:05 -0500640}
641
642MODULE_DESCRIPTION("Mac ESP SCSI driver");
643MODULE_AUTHOR("Finn Thain <fthain@telegraphics.com.au>");
Al Viro839cd312008-05-21 06:32:11 +0100644MODULE_LICENSE("GPL v2");
Finn Thain6fe07aa2008-04-25 10:06:05 -0500645MODULE_VERSION(DRV_VERSION);
Finn Thaincff75f12009-11-04 00:41:35 +1100646MODULE_ALIAS("platform:" DRV_MODULE_NAME);
Finn Thain6fe07aa2008-04-25 10:06:05 -0500647
648module_init(mac_esp_init);
649module_exit(mac_esp_exit);