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9#include <linux/cdrom.h>
10#include <linux/highmem.h>
11#include <linux/module.h>
12#include <linux/slab.h>
13
14#include <scsi/scsi.h>
15#include <scsi/scsi_cmnd.h>
16#include <scsi/scsi_dbg.h>
17#include <scsi/scsi_device.h>
18#include <scsi/scsi_host.h>
19#include <scsi/scsi_eh.h>
20
21#include <asm/lv1call.h>
22#include <asm/ps3stor.h>
23
24
25#define DEVICE_NAME "ps3rom"
26
27#define BOUNCE_SIZE (64*1024)
28
29#define PS3ROM_MAX_SECTORS (BOUNCE_SIZE >> 9)
30
31
32struct ps3rom_private {
33 struct ps3_storage_device *dev;
34 struct scsi_cmnd *curr_cmd;
35};
36
37
38#define LV1_STORAGE_SEND_ATAPI_COMMAND (1)
39
40struct lv1_atapi_cmnd_block {
41 u8 pkt[32];
42 u32 pktlen;
43 u32 blocks;
44 u32 block_size;
45 u32 proto;
46 u32 in_out;
47 u64 buffer;
48 u32 arglen;
49};
50
51enum lv1_atapi_proto {
52 NON_DATA_PROTO = 0,
53 PIO_DATA_IN_PROTO = 1,
54 PIO_DATA_OUT_PROTO = 2,
55 DMA_PROTO = 3
56};
57
58enum lv1_atapi_in_out {
59 DIR_WRITE = 0,
60 DIR_READ = 1
61};
62
63
64static int ps3rom_slave_configure(struct scsi_device *scsi_dev)
65{
66 struct ps3rom_private *priv = shost_priv(scsi_dev->host);
67 struct ps3_storage_device *dev = priv->dev;
68
69 dev_dbg(&dev->sbd.core, "%s:%u: id %u, lun %llu, channel %u\n", __func__,
70 __LINE__, scsi_dev->id, scsi_dev->lun, scsi_dev->channel);
71
72
73
74
75
76 scsi_dev->use_10_for_ms = 1;
77
78
79 scsi_dev->use_10_for_rw = 1;
80
81 return 0;
82}
83
84static int ps3rom_atapi_request(struct ps3_storage_device *dev,
85 struct scsi_cmnd *cmd)
86{
87 struct lv1_atapi_cmnd_block atapi_cmnd;
88 unsigned char opcode = cmd->cmnd[0];
89 int res;
90 u64 lpar;
91
92 dev_dbg(&dev->sbd.core, "%s:%u: send ATAPI command 0x%02x\n", __func__,
93 __LINE__, opcode);
94
95 memset(&atapi_cmnd, 0, sizeof(struct lv1_atapi_cmnd_block));
96 memcpy(&atapi_cmnd.pkt, cmd->cmnd, 12);
97 atapi_cmnd.pktlen = 12;
98 atapi_cmnd.block_size = 1;
99 atapi_cmnd.blocks = atapi_cmnd.arglen = scsi_bufflen(cmd);
100 atapi_cmnd.buffer = dev->bounce_lpar;
101
102 switch (cmd->sc_data_direction) {
103 case DMA_FROM_DEVICE:
104 if (scsi_bufflen(cmd) >= CD_FRAMESIZE)
105 atapi_cmnd.proto = DMA_PROTO;
106 else
107 atapi_cmnd.proto = PIO_DATA_IN_PROTO;
108 atapi_cmnd.in_out = DIR_READ;
109 break;
110
111 case DMA_TO_DEVICE:
112 if (scsi_bufflen(cmd) >= CD_FRAMESIZE)
113 atapi_cmnd.proto = DMA_PROTO;
114 else
115 atapi_cmnd.proto = PIO_DATA_OUT_PROTO;
116 atapi_cmnd.in_out = DIR_WRITE;
117 scsi_sg_copy_to_buffer(cmd, dev->bounce_buf, dev->bounce_size);
118 break;
119
120 default:
121 atapi_cmnd.proto = NON_DATA_PROTO;
122 break;
123 }
124
125 lpar = ps3_mm_phys_to_lpar(__pa(&atapi_cmnd));
126 res = lv1_storage_send_device_command(dev->sbd.dev_id,
127 LV1_STORAGE_SEND_ATAPI_COMMAND,
128 lpar, sizeof(atapi_cmnd),
129 atapi_cmnd.buffer,
130 atapi_cmnd.arglen, &dev->tag);
131 if (res == LV1_DENIED_BY_POLICY) {
132 dev_dbg(&dev->sbd.core,
133 "%s:%u: ATAPI command 0x%02x denied by policy\n",
134 __func__, __LINE__, opcode);
135 return DID_ERROR << 16;
136 }
137
138 if (res) {
139 dev_err(&dev->sbd.core,
140 "%s:%u: ATAPI command 0x%02x failed %d\n", __func__,
141 __LINE__, opcode, res);
142 return DID_ERROR << 16;
143 }
144
145 return 0;
146}
147
148static inline unsigned int srb10_lba(const struct scsi_cmnd *cmd)
149{
150 return cmd->cmnd[2] << 24 | cmd->cmnd[3] << 16 | cmd->cmnd[4] << 8 |
151 cmd->cmnd[5];
152}
153
154static inline unsigned int srb10_len(const struct scsi_cmnd *cmd)
155{
156 return cmd->cmnd[7] << 8 | cmd->cmnd[8];
157}
158
159static int ps3rom_read_request(struct ps3_storage_device *dev,
160 struct scsi_cmnd *cmd, u32 start_sector,
161 u32 sectors)
162{
163 int res;
164
165 dev_dbg(&dev->sbd.core, "%s:%u: read %u sectors starting at %u\n",
166 __func__, __LINE__, sectors, start_sector);
167
168 res = lv1_storage_read(dev->sbd.dev_id,
169 dev->regions[dev->region_idx].id, start_sector,
170 sectors, 0, dev->bounce_lpar, &dev->tag);
171 if (res) {
172 dev_err(&dev->sbd.core, "%s:%u: read failed %d\n", __func__,
173 __LINE__, res);
174 return DID_ERROR << 16;
175 }
176
177 return 0;
178}
179
180static int ps3rom_write_request(struct ps3_storage_device *dev,
181 struct scsi_cmnd *cmd, u32 start_sector,
182 u32 sectors)
183{
184 int res;
185
186 dev_dbg(&dev->sbd.core, "%s:%u: write %u sectors starting at %u\n",
187 __func__, __LINE__, sectors, start_sector);
188
189 scsi_sg_copy_to_buffer(cmd, dev->bounce_buf, dev->bounce_size);
190
191 res = lv1_storage_write(dev->sbd.dev_id,
192 dev->regions[dev->region_idx].id, start_sector,
193 sectors, 0, dev->bounce_lpar, &dev->tag);
194 if (res) {
195 dev_err(&dev->sbd.core, "%s:%u: write failed %d\n", __func__,
196 __LINE__, res);
197 return DID_ERROR << 16;
198 }
199
200 return 0;
201}
202
203static int ps3rom_queuecommand_lck(struct scsi_cmnd *cmd,
204 void (*done)(struct scsi_cmnd *))
205{
206 struct ps3rom_private *priv = shost_priv(cmd->device->host);
207 struct ps3_storage_device *dev = priv->dev;
208 unsigned char opcode;
209 int res;
210
211 priv->curr_cmd = cmd;
212 cmd->scsi_done = done;
213
214 opcode = cmd->cmnd[0];
215
216
217
218
219
220 switch (opcode) {
221 case READ_10:
222 res = ps3rom_read_request(dev, cmd, srb10_lba(cmd),
223 srb10_len(cmd));
224 break;
225
226 case WRITE_10:
227 res = ps3rom_write_request(dev, cmd, srb10_lba(cmd),
228 srb10_len(cmd));
229 break;
230
231 default:
232 res = ps3rom_atapi_request(dev, cmd);
233 break;
234 }
235
236 if (res) {
237 scsi_build_sense(cmd, 0, ILLEGAL_REQUEST, 0, 0);
238 cmd->result = res;
239 priv->curr_cmd = NULL;
240 cmd->scsi_done(cmd);
241 }
242
243 return 0;
244}
245
246static DEF_SCSI_QCMD(ps3rom_queuecommand)
247
248static int decode_lv1_status(u64 status, unsigned char *sense_key,
249 unsigned char *asc, unsigned char *ascq)
250{
251 if (((status >> 24) & 0xff) != SAM_STAT_CHECK_CONDITION)
252 return -1;
253
254 *sense_key = (status >> 16) & 0xff;
255 *asc = (status >> 8) & 0xff;
256 *ascq = status & 0xff;
257 return 0;
258}
259
260static irqreturn_t ps3rom_interrupt(int irq, void *data)
261{
262 struct ps3_storage_device *dev = data;
263 struct Scsi_Host *host;
264 struct ps3rom_private *priv;
265 struct scsi_cmnd *cmd;
266 int res;
267 u64 tag, status;
268 unsigned char sense_key, asc, ascq;
269
270 res = lv1_storage_get_async_status(dev->sbd.dev_id, &tag, &status);
271
272
273
274
275
276
277 if (tag != dev->tag)
278 dev_err(&dev->sbd.core,
279 "%s:%u: tag mismatch, got %llx, expected %llx\n",
280 __func__, __LINE__, tag, dev->tag);
281
282 if (res) {
283 dev_err(&dev->sbd.core, "%s:%u: res=%d status=0x%llx\n",
284 __func__, __LINE__, res, status);
285 return IRQ_HANDLED;
286 }
287
288 host = ps3_system_bus_get_drvdata(&dev->sbd);
289 priv = shost_priv(host);
290 cmd = priv->curr_cmd;
291
292 if (!status) {
293
294 if (cmd->sc_data_direction == DMA_FROM_DEVICE) {
295 int len;
296
297 len = scsi_sg_copy_from_buffer(cmd,
298 dev->bounce_buf,
299 dev->bounce_size);
300
301 scsi_set_resid(cmd, scsi_bufflen(cmd) - len);
302 }
303 cmd->result = DID_OK << 16;
304 goto done;
305 }
306
307 if (cmd->cmnd[0] == REQUEST_SENSE) {
308
309 dev_err(&dev->sbd.core, "%s:%u: end error without autosense\n",
310 __func__, __LINE__);
311 cmd->result = DID_ERROR << 16 | SAM_STAT_CHECK_CONDITION;
312 goto done;
313 }
314
315 if (decode_lv1_status(status, &sense_key, &asc, &ascq)) {
316 cmd->result = DID_ERROR << 16;
317 goto done;
318 }
319
320 scsi_build_sense(cmd, 0, sense_key, asc, ascq);
321
322done:
323 priv->curr_cmd = NULL;
324 cmd->scsi_done(cmd);
325 return IRQ_HANDLED;
326}
327
328static struct scsi_host_template ps3rom_host_template = {
329 .name = DEVICE_NAME,
330 .slave_configure = ps3rom_slave_configure,
331 .queuecommand = ps3rom_queuecommand,
332 .can_queue = 1,
333 .this_id = 7,
334 .sg_tablesize = SG_ALL,
335 .emulated = 1,
336 .max_sectors = PS3ROM_MAX_SECTORS,
337 .module = THIS_MODULE,
338};
339
340
341static int ps3rom_probe(struct ps3_system_bus_device *_dev)
342{
343 struct ps3_storage_device *dev = to_ps3_storage_device(&_dev->core);
344 int error;
345 struct Scsi_Host *host;
346 struct ps3rom_private *priv;
347
348 if (dev->blk_size != CD_FRAMESIZE) {
349 dev_err(&dev->sbd.core,
350 "%s:%u: cannot handle block size %llu\n", __func__,
351 __LINE__, dev->blk_size);
352 return -EINVAL;
353 }
354
355 dev->bounce_size = BOUNCE_SIZE;
356 dev->bounce_buf = kmalloc(BOUNCE_SIZE, GFP_DMA);
357 if (!dev->bounce_buf)
358 return -ENOMEM;
359
360 error = ps3stor_setup(dev, ps3rom_interrupt);
361 if (error)
362 goto fail_free_bounce;
363
364 host = scsi_host_alloc(&ps3rom_host_template,
365 sizeof(struct ps3rom_private));
366 if (!host) {
367 dev_err(&dev->sbd.core, "%s:%u: scsi_host_alloc failed\n",
368 __func__, __LINE__);
369 error = -ENOMEM;
370 goto fail_teardown;
371 }
372
373 priv = shost_priv(host);
374 ps3_system_bus_set_drvdata(&dev->sbd, host);
375 priv->dev = dev;
376
377
378 host->max_id = 1;
379 host->max_lun = 1;
380
381 error = scsi_add_host(host, &dev->sbd.core);
382 if (error) {
383 dev_err(&dev->sbd.core, "%s:%u: scsi_host_alloc failed %d\n",
384 __func__, __LINE__, error);
385 error = -ENODEV;
386 goto fail_host_put;
387 }
388
389 scsi_scan_host(host);
390 return 0;
391
392fail_host_put:
393 scsi_host_put(host);
394 ps3_system_bus_set_drvdata(&dev->sbd, NULL);
395fail_teardown:
396 ps3stor_teardown(dev);
397fail_free_bounce:
398 kfree(dev->bounce_buf);
399 return error;
400}
401
402static void ps3rom_remove(struct ps3_system_bus_device *_dev)
403{
404 struct ps3_storage_device *dev = to_ps3_storage_device(&_dev->core);
405 struct Scsi_Host *host = ps3_system_bus_get_drvdata(&dev->sbd);
406
407 scsi_remove_host(host);
408 ps3stor_teardown(dev);
409 scsi_host_put(host);
410 ps3_system_bus_set_drvdata(&dev->sbd, NULL);
411 kfree(dev->bounce_buf);
412}
413
414static struct ps3_system_bus_driver ps3rom = {
415 .match_id = PS3_MATCH_ID_STOR_ROM,
416 .core.name = DEVICE_NAME,
417 .core.owner = THIS_MODULE,
418 .probe = ps3rom_probe,
419 .remove = ps3rom_remove
420};
421
422
423static int __init ps3rom_init(void)
424{
425 return ps3_system_bus_driver_register(&ps3rom);
426}
427
428static void __exit ps3rom_exit(void)
429{
430 ps3_system_bus_driver_unregister(&ps3rom);
431}
432
433module_init(ps3rom_init);
434module_exit(ps3rom_exit);
435
436MODULE_LICENSE("GPL");
437MODULE_DESCRIPTION("PS3 BD/DVD/CD-ROM Storage Driver");
438MODULE_AUTHOR("Sony Corporation");
439MODULE_ALIAS(PS3_MODULE_ALIAS_STOR_ROM);
440
