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21#include <linux/cdrom.h>
22#include <linux/highmem.h>
23
24#include <scsi/scsi.h>
25#include <scsi/scsi_cmnd.h>
26#include <scsi/scsi_dbg.h>
27#include <scsi/scsi_device.h>
28#include <scsi/scsi_host.h>
29#include <scsi/scsi_eh.h>
30
31#include <asm/lv1call.h>
32#include <asm/ps3stor.h>
33
34
35#define DEVICE_NAME "ps3rom"
36
37#define BOUNCE_SIZE (64*1024)
38
39#define PS3ROM_MAX_SECTORS (BOUNCE_SIZE >> 9)
40
41
42struct ps3rom_private {
43 struct ps3_storage_device *dev;
44 struct scsi_cmnd *curr_cmd;
45};
46
47
48#define LV1_STORAGE_SEND_ATAPI_COMMAND (1)
49
50struct lv1_atapi_cmnd_block {
51 u8 pkt[32];
52 u32 pktlen;
53 u32 blocks;
54 u32 block_size;
55 u32 proto;
56 u32 in_out;
57 u64 buffer;
58 u32 arglen;
59};
60
61enum lv1_atapi_proto {
62 NON_DATA_PROTO = 0,
63 PIO_DATA_IN_PROTO = 1,
64 PIO_DATA_OUT_PROTO = 2,
65 DMA_PROTO = 3
66};
67
68enum lv1_atapi_in_out {
69 DIR_WRITE = 0,
70 DIR_READ = 1
71};
72
73
74static int ps3rom_slave_configure(struct scsi_device *scsi_dev)
75{
76 struct ps3rom_private *priv = shost_priv(scsi_dev->host);
77 struct ps3_storage_device *dev = priv->dev;
78
79 dev_dbg(&dev->sbd.core, "%s:%u: id %u, lun %u, channel %u\n", __func__,
80 __LINE__, scsi_dev->id, scsi_dev->lun, scsi_dev->channel);
81
82
83
84
85
86 scsi_dev->use_10_for_ms = 1;
87
88
89 scsi_dev->use_10_for_rw = 1;
90
91 return 0;
92}
93
94static int ps3rom_atapi_request(struct ps3_storage_device *dev,
95 struct scsi_cmnd *cmd)
96{
97 struct lv1_atapi_cmnd_block atapi_cmnd;
98 unsigned char opcode = cmd->cmnd[0];
99 int res;
100 u64 lpar;
101
102 dev_dbg(&dev->sbd.core, "%s:%u: send ATAPI command 0x%02x\n", __func__,
103 __LINE__, opcode);
104
105 memset(&atapi_cmnd, 0, sizeof(struct lv1_atapi_cmnd_block));
106 memcpy(&atapi_cmnd.pkt, cmd->cmnd, 12);
107 atapi_cmnd.pktlen = 12;
108 atapi_cmnd.block_size = 1;
109 atapi_cmnd.blocks = atapi_cmnd.arglen = scsi_bufflen(cmd);
110 atapi_cmnd.buffer = dev->bounce_lpar;
111
112 switch (cmd->sc_data_direction) {
113 case DMA_FROM_DEVICE:
114 if (scsi_bufflen(cmd) >= CD_FRAMESIZE)
115 atapi_cmnd.proto = DMA_PROTO;
116 else
117 atapi_cmnd.proto = PIO_DATA_IN_PROTO;
118 atapi_cmnd.in_out = DIR_READ;
119 break;
120
121 case DMA_TO_DEVICE:
122 if (scsi_bufflen(cmd) >= CD_FRAMESIZE)
123 atapi_cmnd.proto = DMA_PROTO;
124 else
125 atapi_cmnd.proto = PIO_DATA_OUT_PROTO;
126 atapi_cmnd.in_out = DIR_WRITE;
127 scsi_sg_copy_to_buffer(cmd, dev->bounce_buf, dev->bounce_size);
128 break;
129
130 default:
131 atapi_cmnd.proto = NON_DATA_PROTO;
132 break;
133 }
134
135 lpar = ps3_mm_phys_to_lpar(__pa(&atapi_cmnd));
136 res = lv1_storage_send_device_command(dev->sbd.dev_id,
137 LV1_STORAGE_SEND_ATAPI_COMMAND,
138 lpar, sizeof(atapi_cmnd),
139 atapi_cmnd.buffer,
140 atapi_cmnd.arglen, &dev->tag);
141 if (res == LV1_DENIED_BY_POLICY) {
142 dev_dbg(&dev->sbd.core,
143 "%s:%u: ATAPI command 0x%02x denied by policy\n",
144 __func__, __LINE__, opcode);
145 return DID_ERROR << 16;
146 }
147
148 if (res) {
149 dev_err(&dev->sbd.core,
150 "%s:%u: ATAPI command 0x%02x failed %d\n", __func__,
151 __LINE__, opcode, res);
152 return DID_ERROR << 16;
153 }
154
155 return 0;
156}
157
158static inline unsigned int srb10_lba(const struct scsi_cmnd *cmd)
159{
160 return cmd->cmnd[2] << 24 | cmd->cmnd[3] << 16 | cmd->cmnd[4] << 8 |
161 cmd->cmnd[5];
162}
163
164static inline unsigned int srb10_len(const struct scsi_cmnd *cmd)
165{
166 return cmd->cmnd[7] << 8 | cmd->cmnd[8];
167}
168
169static int ps3rom_read_request(struct ps3_storage_device *dev,
170 struct scsi_cmnd *cmd, u32 start_sector,
171 u32 sectors)
172{
173 int res;
174
175 dev_dbg(&dev->sbd.core, "%s:%u: read %u sectors starting at %u\n",
176 __func__, __LINE__, sectors, start_sector);
177
178 res = lv1_storage_read(dev->sbd.dev_id,
179 dev->regions[dev->region_idx].id, start_sector,
180 sectors, 0, dev->bounce_lpar, &dev->tag);
181 if (res) {
182 dev_err(&dev->sbd.core, "%s:%u: read failed %d\n", __func__,
183 __LINE__, res);
184 return DID_ERROR << 16;
185 }
186
187 return 0;
188}
189
190static int ps3rom_write_request(struct ps3_storage_device *dev,
191 struct scsi_cmnd *cmd, u32 start_sector,
192 u32 sectors)
193{
194 int res;
195
196 dev_dbg(&dev->sbd.core, "%s:%u: write %u sectors starting at %u\n",
197 __func__, __LINE__, sectors, start_sector);
198
199 scsi_sg_copy_to_buffer(cmd, dev->bounce_buf, dev->bounce_size);
200
201 res = lv1_storage_write(dev->sbd.dev_id,
202 dev->regions[dev->region_idx].id, start_sector,
203 sectors, 0, dev->bounce_lpar, &dev->tag);
204 if (res) {
205 dev_err(&dev->sbd.core, "%s:%u: write failed %d\n", __func__,
206 __LINE__, res);
207 return DID_ERROR << 16;
208 }
209
210 return 0;
211}
212
213static int ps3rom_queuecommand(struct scsi_cmnd *cmd,
214 void (*done)(struct scsi_cmnd *))
215{
216 struct ps3rom_private *priv = shost_priv(cmd->device->host);
217 struct ps3_storage_device *dev = priv->dev;
218 unsigned char opcode;
219 int res;
220
221#ifdef DEBUG
222 scsi_print_command(cmd);
223#endif
224
225 priv->curr_cmd = cmd;
226 cmd->scsi_done = done;
227
228 opcode = cmd->cmnd[0];
229
230
231
232
233
234 switch (opcode) {
235 case READ_10:
236 res = ps3rom_read_request(dev, cmd, srb10_lba(cmd),
237 srb10_len(cmd));
238 break;
239
240 case WRITE_10:
241 res = ps3rom_write_request(dev, cmd, srb10_lba(cmd),
242 srb10_len(cmd));
243 break;
244
245 default:
246 res = ps3rom_atapi_request(dev, cmd);
247 break;
248 }
249
250 if (res) {
251 memset(cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
252 cmd->result = res;
253 cmd->sense_buffer[0] = 0x70;
254 cmd->sense_buffer[2] = ILLEGAL_REQUEST;
255 priv->curr_cmd = NULL;
256 cmd->scsi_done(cmd);
257 }
258
259 return 0;
260}
261
262static int decode_lv1_status(u64 status, unsigned char *sense_key,
263 unsigned char *asc, unsigned char *ascq)
264{
265 if (((status >> 24) & 0xff) != SAM_STAT_CHECK_CONDITION)
266 return -1;
267
268 *sense_key = (status >> 16) & 0xff;
269 *asc = (status >> 8) & 0xff;
270 *ascq = status & 0xff;
271 return 0;
272}
273
274static irqreturn_t ps3rom_interrupt(int irq, void *data)
275{
276 struct ps3_storage_device *dev = data;
277 struct Scsi_Host *host;
278 struct ps3rom_private *priv;
279 struct scsi_cmnd *cmd;
280 int res;
281 u64 tag, status;
282 unsigned char sense_key, asc, ascq;
283
284 res = lv1_storage_get_async_status(dev->sbd.dev_id, &tag, &status);
285
286
287
288
289
290
291 if (tag != dev->tag)
292 dev_err(&dev->sbd.core,
293 "%s:%u: tag mismatch, got %llx, expected %llx\n",
294 __func__, __LINE__, tag, dev->tag);
295
296 if (res) {
297 dev_err(&dev->sbd.core, "%s:%u: res=%d status=0x%llx\n",
298 __func__, __LINE__, res, status);
299 return IRQ_HANDLED;
300 }
301
302 host = ps3_system_bus_get_drvdata(&dev->sbd);
303 priv = shost_priv(host);
304 cmd = priv->curr_cmd;
305
306 if (!status) {
307
308 if (cmd->sc_data_direction == DMA_FROM_DEVICE) {
309 int len;
310
311 len = scsi_sg_copy_from_buffer(cmd,
312 dev->bounce_buf,
313 dev->bounce_size);
314
315 scsi_set_resid(cmd, scsi_bufflen(cmd) - len);
316 }
317 cmd->result = DID_OK << 16;
318 goto done;
319 }
320
321 if (cmd->cmnd[0] == REQUEST_SENSE) {
322
323 dev_err(&dev->sbd.core, "%s:%u: end error without autosense\n",
324 __func__, __LINE__);
325 cmd->result = DID_ERROR << 16 | SAM_STAT_CHECK_CONDITION;
326 goto done;
327 }
328
329 if (decode_lv1_status(status, &sense_key, &asc, &ascq)) {
330 cmd->result = DID_ERROR << 16;
331 goto done;
332 }
333
334 scsi_build_sense_buffer(0, cmd->sense_buffer, sense_key, asc, ascq);
335 cmd->result = SAM_STAT_CHECK_CONDITION;
336
337done:
338 priv->curr_cmd = NULL;
339 cmd->scsi_done(cmd);
340 return IRQ_HANDLED;
341}
342
343static struct scsi_host_template ps3rom_host_template = {
344 .name = DEVICE_NAME,
345 .slave_configure = ps3rom_slave_configure,
346 .queuecommand = ps3rom_queuecommand,
347 .can_queue = 1,
348 .this_id = 7,
349 .sg_tablesize = SG_ALL,
350 .cmd_per_lun = 1,
351 .emulated = 1,
352 .max_sectors = PS3ROM_MAX_SECTORS,
353 .use_clustering = ENABLE_CLUSTERING,
354 .module = THIS_MODULE,
355};
356
357
358static int __devinit ps3rom_probe(struct ps3_system_bus_device *_dev)
359{
360 struct ps3_storage_device *dev = to_ps3_storage_device(&_dev->core);
361 int error;
362 struct Scsi_Host *host;
363 struct ps3rom_private *priv;
364
365 if (dev->blk_size != CD_FRAMESIZE) {
366 dev_err(&dev->sbd.core,
367 "%s:%u: cannot handle block size %llu\n", __func__,
368 __LINE__, dev->blk_size);
369 return -EINVAL;
370 }
371
372 dev->bounce_size = BOUNCE_SIZE;
373 dev->bounce_buf = kmalloc(BOUNCE_SIZE, GFP_DMA);
374 if (!dev->bounce_buf)
375 return -ENOMEM;
376
377 error = ps3stor_setup(dev, ps3rom_interrupt);
378 if (error)
379 goto fail_free_bounce;
380
381 host = scsi_host_alloc(&ps3rom_host_template,
382 sizeof(struct ps3rom_private));
383 if (!host) {
384 dev_err(&dev->sbd.core, "%s:%u: scsi_host_alloc failed\n",
385 __func__, __LINE__);
386 goto fail_teardown;
387 }
388
389 priv = shost_priv(host);
390 ps3_system_bus_set_drvdata(&dev->sbd, host);
391 priv->dev = dev;
392
393
394 host->max_id = 1;
395 host->max_lun = 1;
396
397 error = scsi_add_host(host, &dev->sbd.core);
398 if (error) {
399 dev_err(&dev->sbd.core, "%s:%u: scsi_host_alloc failed %d\n",
400 __func__, __LINE__, error);
401 error = -ENODEV;
402 goto fail_host_put;
403 }
404
405 scsi_scan_host(host);
406 return 0;
407
408fail_host_put:
409 scsi_host_put(host);
410 ps3_system_bus_set_drvdata(&dev->sbd, NULL);
411fail_teardown:
412 ps3stor_teardown(dev);
413fail_free_bounce:
414 kfree(dev->bounce_buf);
415 return error;
416}
417
418static int ps3rom_remove(struct ps3_system_bus_device *_dev)
419{
420 struct ps3_storage_device *dev = to_ps3_storage_device(&_dev->core);
421 struct Scsi_Host *host = ps3_system_bus_get_drvdata(&dev->sbd);
422
423 scsi_remove_host(host);
424 ps3stor_teardown(dev);
425 scsi_host_put(host);
426 ps3_system_bus_set_drvdata(&dev->sbd, NULL);
427 kfree(dev->bounce_buf);
428 return 0;
429}
430
431static struct ps3_system_bus_driver ps3rom = {
432 .match_id = PS3_MATCH_ID_STOR_ROM,
433 .core.name = DEVICE_NAME,
434 .core.owner = THIS_MODULE,
435 .probe = ps3rom_probe,
436 .remove = ps3rom_remove
437};
438
439
440static int __init ps3rom_init(void)
441{
442 return ps3_system_bus_driver_register(&ps3rom);
443}
444
445static void __exit ps3rom_exit(void)
446{
447 ps3_system_bus_driver_unregister(&ps3rom);
448}
449
450module_init(ps3rom_init);
451module_exit(ps3rom_exit);
452
453MODULE_LICENSE("GPL");
454MODULE_DESCRIPTION("PS3 BD/DVD/CD-ROM Storage Driver");
455MODULE_AUTHOR("Sony Corporation");
456MODULE_ALIAS(PS3_MODULE_ALIAS_STOR_ROM);
457
