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Merge branch 'etnaviv/fixes' of git://git.pengutronix.de/git/lst/linux
[mirror_ubuntu-artful-kernel.git] / drivers / scsi / mvsas / mv_init.c
1 /*
2 * Marvell 88SE64xx/88SE94xx pci init
3 *
4 * Copyright 2007 Red Hat, Inc.
5 * Copyright 2008 Marvell. <kewei@marvell.com>
6 * Copyright 2009-2011 Marvell. <yuxiangl@marvell.com>
7 *
8 * This file is licensed under GPLv2.
9 *
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License as
12 * published by the Free Software Foundation; version 2 of the
13 * License.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
23 * USA
24 */
25
26
27 #include "mv_sas.h"
28
29 int interrupt_coalescing = 0x80;
30
31 static struct scsi_transport_template *mvs_stt;
32 static const struct mvs_chip_info mvs_chips[] = {
33 [chip_6320] = { 1, 2, 0x400, 17, 16, 6, 9, &mvs_64xx_dispatch, },
34 [chip_6440] = { 1, 4, 0x400, 17, 16, 6, 9, &mvs_64xx_dispatch, },
35 [chip_6485] = { 1, 8, 0x800, 33, 32, 6, 10, &mvs_64xx_dispatch, },
36 [chip_9180] = { 2, 4, 0x800, 17, 64, 8, 9, &mvs_94xx_dispatch, },
37 [chip_9480] = { 2, 4, 0x800, 17, 64, 8, 9, &mvs_94xx_dispatch, },
38 [chip_9445] = { 1, 4, 0x800, 17, 64, 8, 11, &mvs_94xx_dispatch, },
39 [chip_9485] = { 2, 4, 0x800, 17, 64, 8, 11, &mvs_94xx_dispatch, },
40 [chip_1300] = { 1, 4, 0x400, 17, 16, 6, 9, &mvs_64xx_dispatch, },
41 [chip_1320] = { 2, 4, 0x800, 17, 64, 8, 9, &mvs_94xx_dispatch, },
42 };
43
44 struct device_attribute *mvst_host_attrs[];
45
46 #define SOC_SAS_NUM 2
47
48 static struct scsi_host_template mvs_sht = {
49 .module = THIS_MODULE,
50 .name = DRV_NAME,
51 .queuecommand = sas_queuecommand,
52 .target_alloc = sas_target_alloc,
53 .slave_configure = sas_slave_configure,
54 .scan_finished = mvs_scan_finished,
55 .scan_start = mvs_scan_start,
56 .change_queue_depth = sas_change_queue_depth,
57 .bios_param = sas_bios_param,
58 .can_queue = 1,
59 .this_id = -1,
60 .sg_tablesize = SG_ALL,
61 .max_sectors = SCSI_DEFAULT_MAX_SECTORS,
62 .use_clustering = ENABLE_CLUSTERING,
63 .eh_device_reset_handler = sas_eh_device_reset_handler,
64 .eh_bus_reset_handler = sas_eh_bus_reset_handler,
65 .target_destroy = sas_target_destroy,
66 .ioctl = sas_ioctl,
67 .shost_attrs = mvst_host_attrs,
68 .track_queue_depth = 1,
69 };
70
71 static struct sas_domain_function_template mvs_transport_ops = {
72 .lldd_dev_found = mvs_dev_found,
73 .lldd_dev_gone = mvs_dev_gone,
74 .lldd_execute_task = mvs_queue_command,
75 .lldd_control_phy = mvs_phy_control,
76
77 .lldd_abort_task = mvs_abort_task,
78 .lldd_abort_task_set = mvs_abort_task_set,
79 .lldd_clear_aca = mvs_clear_aca,
80 .lldd_clear_task_set = mvs_clear_task_set,
81 .lldd_I_T_nexus_reset = mvs_I_T_nexus_reset,
82 .lldd_lu_reset = mvs_lu_reset,
83 .lldd_query_task = mvs_query_task,
84 .lldd_port_formed = mvs_port_formed,
85 .lldd_port_deformed = mvs_port_deformed,
86
87 .lldd_write_gpio = mvs_gpio_write,
88
89 };
90
91 static void mvs_phy_init(struct mvs_info *mvi, int phy_id)
92 {
93 struct mvs_phy *phy = &mvi->phy[phy_id];
94 struct asd_sas_phy *sas_phy = &phy->sas_phy;
95
96 phy->mvi = mvi;
97 phy->port = NULL;
98 init_timer(&phy->timer);
99 sas_phy->enabled = (phy_id < mvi->chip->n_phy) ? 1 : 0;
100 sas_phy->class = SAS;
101 sas_phy->iproto = SAS_PROTOCOL_ALL;
102 sas_phy->tproto = 0;
103 sas_phy->type = PHY_TYPE_PHYSICAL;
104 sas_phy->role = PHY_ROLE_INITIATOR;
105 sas_phy->oob_mode = OOB_NOT_CONNECTED;
106 sas_phy->linkrate = SAS_LINK_RATE_UNKNOWN;
107
108 sas_phy->id = phy_id;
109 sas_phy->sas_addr = &mvi->sas_addr[0];
110 sas_phy->frame_rcvd = &phy->frame_rcvd[0];
111 sas_phy->ha = (struct sas_ha_struct *)mvi->shost->hostdata;
112 sas_phy->lldd_phy = phy;
113 }
114
115 static void mvs_free(struct mvs_info *mvi)
116 {
117 struct mvs_wq *mwq;
118 int slot_nr;
119
120 if (!mvi)
121 return;
122
123 if (mvi->flags & MVF_FLAG_SOC)
124 slot_nr = MVS_SOC_SLOTS;
125 else
126 slot_nr = MVS_CHIP_SLOT_SZ;
127
128 if (mvi->dma_pool)
129 pci_pool_destroy(mvi->dma_pool);
130
131 if (mvi->tx)
132 dma_free_coherent(mvi->dev,
133 sizeof(*mvi->tx) * MVS_CHIP_SLOT_SZ,
134 mvi->tx, mvi->tx_dma);
135 if (mvi->rx_fis)
136 dma_free_coherent(mvi->dev, MVS_RX_FISL_SZ,
137 mvi->rx_fis, mvi->rx_fis_dma);
138 if (mvi->rx)
139 dma_free_coherent(mvi->dev,
140 sizeof(*mvi->rx) * (MVS_RX_RING_SZ + 1),
141 mvi->rx, mvi->rx_dma);
142 if (mvi->slot)
143 dma_free_coherent(mvi->dev,
144 sizeof(*mvi->slot) * slot_nr,
145 mvi->slot, mvi->slot_dma);
146
147 if (mvi->bulk_buffer)
148 dma_free_coherent(mvi->dev, TRASH_BUCKET_SIZE,
149 mvi->bulk_buffer, mvi->bulk_buffer_dma);
150 if (mvi->bulk_buffer1)
151 dma_free_coherent(mvi->dev, TRASH_BUCKET_SIZE,
152 mvi->bulk_buffer1, mvi->bulk_buffer_dma1);
153
154 MVS_CHIP_DISP->chip_iounmap(mvi);
155 if (mvi->shost)
156 scsi_host_put(mvi->shost);
157 list_for_each_entry(mwq, &mvi->wq_list, entry)
158 cancel_delayed_work(&mwq->work_q);
159 kfree(mvi->tags);
160 kfree(mvi);
161 }
162
163 #ifdef CONFIG_SCSI_MVSAS_TASKLET
164 static void mvs_tasklet(unsigned long opaque)
165 {
166 u32 stat;
167 u16 core_nr, i = 0;
168
169 struct mvs_info *mvi;
170 struct sas_ha_struct *sha = (struct sas_ha_struct *)opaque;
171
172 core_nr = ((struct mvs_prv_info *)sha->lldd_ha)->n_host;
173 mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[0];
174
175 if (unlikely(!mvi))
176 BUG_ON(1);
177
178 stat = MVS_CHIP_DISP->isr_status(mvi, mvi->pdev->irq);
179 if (!stat)
180 goto out;
181
182 for (i = 0; i < core_nr; i++) {
183 mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[i];
184 MVS_CHIP_DISP->isr(mvi, mvi->pdev->irq, stat);
185 }
186 out:
187 MVS_CHIP_DISP->interrupt_enable(mvi);
188
189 }
190 #endif
191
192 static irqreturn_t mvs_interrupt(int irq, void *opaque)
193 {
194 u32 core_nr;
195 u32 stat;
196 struct mvs_info *mvi;
197 struct sas_ha_struct *sha = opaque;
198 #ifndef CONFIG_SCSI_MVSAS_TASKLET
199 u32 i;
200 #endif
201
202 core_nr = ((struct mvs_prv_info *)sha->lldd_ha)->n_host;
203 mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[0];
204
205 if (unlikely(!mvi))
206 return IRQ_NONE;
207 #ifdef CONFIG_SCSI_MVSAS_TASKLET
208 MVS_CHIP_DISP->interrupt_disable(mvi);
209 #endif
210
211 stat = MVS_CHIP_DISP->isr_status(mvi, irq);
212 if (!stat) {
213 #ifdef CONFIG_SCSI_MVSAS_TASKLET
214 MVS_CHIP_DISP->interrupt_enable(mvi);
215 #endif
216 return IRQ_NONE;
217 }
218
219 #ifdef CONFIG_SCSI_MVSAS_TASKLET
220 tasklet_schedule(&((struct mvs_prv_info *)sha->lldd_ha)->mv_tasklet);
221 #else
222 for (i = 0; i < core_nr; i++) {
223 mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[i];
224 MVS_CHIP_DISP->isr(mvi, irq, stat);
225 }
226 #endif
227 return IRQ_HANDLED;
228 }
229
230 static int mvs_alloc(struct mvs_info *mvi, struct Scsi_Host *shost)
231 {
232 int i = 0, slot_nr;
233 char pool_name[32];
234
235 if (mvi->flags & MVF_FLAG_SOC)
236 slot_nr = MVS_SOC_SLOTS;
237 else
238 slot_nr = MVS_CHIP_SLOT_SZ;
239
240 spin_lock_init(&mvi->lock);
241 for (i = 0; i < mvi->chip->n_phy; i++) {
242 mvs_phy_init(mvi, i);
243 mvi->port[i].wide_port_phymap = 0;
244 mvi->port[i].port_attached = 0;
245 INIT_LIST_HEAD(&mvi->port[i].list);
246 }
247 for (i = 0; i < MVS_MAX_DEVICES; i++) {
248 mvi->devices[i].taskfileset = MVS_ID_NOT_MAPPED;
249 mvi->devices[i].dev_type = SAS_PHY_UNUSED;
250 mvi->devices[i].device_id = i;
251 mvi->devices[i].dev_status = MVS_DEV_NORMAL;
252 init_timer(&mvi->devices[i].timer);
253 }
254
255 /*
256 * alloc and init our DMA areas
257 */
258 mvi->tx = dma_alloc_coherent(mvi->dev,
259 sizeof(*mvi->tx) * MVS_CHIP_SLOT_SZ,
260 &mvi->tx_dma, GFP_KERNEL);
261 if (!mvi->tx)
262 goto err_out;
263 memset(mvi->tx, 0, sizeof(*mvi->tx) * MVS_CHIP_SLOT_SZ);
264 mvi->rx_fis = dma_alloc_coherent(mvi->dev, MVS_RX_FISL_SZ,
265 &mvi->rx_fis_dma, GFP_KERNEL);
266 if (!mvi->rx_fis)
267 goto err_out;
268 memset(mvi->rx_fis, 0, MVS_RX_FISL_SZ);
269
270 mvi->rx = dma_alloc_coherent(mvi->dev,
271 sizeof(*mvi->rx) * (MVS_RX_RING_SZ + 1),
272 &mvi->rx_dma, GFP_KERNEL);
273 if (!mvi->rx)
274 goto err_out;
275 memset(mvi->rx, 0, sizeof(*mvi->rx) * (MVS_RX_RING_SZ + 1));
276 mvi->rx[0] = cpu_to_le32(0xfff);
277 mvi->rx_cons = 0xfff;
278
279 mvi->slot = dma_alloc_coherent(mvi->dev,
280 sizeof(*mvi->slot) * slot_nr,
281 &mvi->slot_dma, GFP_KERNEL);
282 if (!mvi->slot)
283 goto err_out;
284 memset(mvi->slot, 0, sizeof(*mvi->slot) * slot_nr);
285
286 mvi->bulk_buffer = dma_alloc_coherent(mvi->dev,
287 TRASH_BUCKET_SIZE,
288 &mvi->bulk_buffer_dma, GFP_KERNEL);
289 if (!mvi->bulk_buffer)
290 goto err_out;
291
292 mvi->bulk_buffer1 = dma_alloc_coherent(mvi->dev,
293 TRASH_BUCKET_SIZE,
294 &mvi->bulk_buffer_dma1, GFP_KERNEL);
295 if (!mvi->bulk_buffer1)
296 goto err_out;
297
298 sprintf(pool_name, "%s%d", "mvs_dma_pool", mvi->id);
299 mvi->dma_pool = pci_pool_create(pool_name, mvi->pdev, MVS_SLOT_BUF_SZ, 16, 0);
300 if (!mvi->dma_pool) {
301 printk(KERN_DEBUG "failed to create dma pool %s.\n", pool_name);
302 goto err_out;
303 }
304 mvi->tags_num = slot_nr;
305
306 /* Initialize tags */
307 mvs_tag_init(mvi);
308 return 0;
309 err_out:
310 return 1;
311 }
312
313
314 int mvs_ioremap(struct mvs_info *mvi, int bar, int bar_ex)
315 {
316 unsigned long res_start, res_len, res_flag, res_flag_ex = 0;
317 struct pci_dev *pdev = mvi->pdev;
318 if (bar_ex != -1) {
319 /*
320 * ioremap main and peripheral registers
321 */
322 res_start = pci_resource_start(pdev, bar_ex);
323 res_len = pci_resource_len(pdev, bar_ex);
324 if (!res_start || !res_len)
325 goto err_out;
326
327 res_flag_ex = pci_resource_flags(pdev, bar_ex);
328 if (res_flag_ex & IORESOURCE_MEM)
329 mvi->regs_ex = ioremap(res_start, res_len);
330 else
331 mvi->regs_ex = (void *)res_start;
332 if (!mvi->regs_ex)
333 goto err_out;
334 }
335
336 res_start = pci_resource_start(pdev, bar);
337 res_len = pci_resource_len(pdev, bar);
338 if (!res_start || !res_len) {
339 iounmap(mvi->regs_ex);
340 mvi->regs_ex = NULL;
341 goto err_out;
342 }
343
344 res_flag = pci_resource_flags(pdev, bar);
345 mvi->regs = ioremap(res_start, res_len);
346
347 if (!mvi->regs) {
348 if (mvi->regs_ex && (res_flag_ex & IORESOURCE_MEM))
349 iounmap(mvi->regs_ex);
350 mvi->regs_ex = NULL;
351 goto err_out;
352 }
353
354 return 0;
355 err_out:
356 return -1;
357 }
358
359 void mvs_iounmap(void __iomem *regs)
360 {
361 iounmap(regs);
362 }
363
364 static struct mvs_info *mvs_pci_alloc(struct pci_dev *pdev,
365 const struct pci_device_id *ent,
366 struct Scsi_Host *shost, unsigned int id)
367 {
368 struct mvs_info *mvi = NULL;
369 struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
370
371 mvi = kzalloc(sizeof(*mvi) +
372 (1L << mvs_chips[ent->driver_data].slot_width) *
373 sizeof(struct mvs_slot_info), GFP_KERNEL);
374 if (!mvi)
375 return NULL;
376
377 mvi->pdev = pdev;
378 mvi->dev = &pdev->dev;
379 mvi->chip_id = ent->driver_data;
380 mvi->chip = &mvs_chips[mvi->chip_id];
381 INIT_LIST_HEAD(&mvi->wq_list);
382
383 ((struct mvs_prv_info *)sha->lldd_ha)->mvi[id] = mvi;
384 ((struct mvs_prv_info *)sha->lldd_ha)->n_phy = mvi->chip->n_phy;
385
386 mvi->id = id;
387 mvi->sas = sha;
388 mvi->shost = shost;
389
390 mvi->tags = kzalloc(MVS_CHIP_SLOT_SZ>>3, GFP_KERNEL);
391 if (!mvi->tags)
392 goto err_out;
393
394 if (MVS_CHIP_DISP->chip_ioremap(mvi))
395 goto err_out;
396 if (!mvs_alloc(mvi, shost))
397 return mvi;
398 err_out:
399 mvs_free(mvi);
400 return NULL;
401 }
402
403 static int pci_go_64(struct pci_dev *pdev)
404 {
405 int rc;
406
407 if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
408 rc = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
409 if (rc) {
410 rc = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
411 if (rc) {
412 dev_printk(KERN_ERR, &pdev->dev,
413 "64-bit DMA enable failed\n");
414 return rc;
415 }
416 }
417 } else {
418 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
419 if (rc) {
420 dev_printk(KERN_ERR, &pdev->dev,
421 "32-bit DMA enable failed\n");
422 return rc;
423 }
424 rc = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
425 if (rc) {
426 dev_printk(KERN_ERR, &pdev->dev,
427 "32-bit consistent DMA enable failed\n");
428 return rc;
429 }
430 }
431
432 return rc;
433 }
434
435 static int mvs_prep_sas_ha_init(struct Scsi_Host *shost,
436 const struct mvs_chip_info *chip_info)
437 {
438 int phy_nr, port_nr; unsigned short core_nr;
439 struct asd_sas_phy **arr_phy;
440 struct asd_sas_port **arr_port;
441 struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
442
443 core_nr = chip_info->n_host;
444 phy_nr = core_nr * chip_info->n_phy;
445 port_nr = phy_nr;
446
447 memset(sha, 0x00, sizeof(struct sas_ha_struct));
448 arr_phy = kcalloc(phy_nr, sizeof(void *), GFP_KERNEL);
449 arr_port = kcalloc(port_nr, sizeof(void *), GFP_KERNEL);
450 if (!arr_phy || !arr_port)
451 goto exit_free;
452
453 sha->sas_phy = arr_phy;
454 sha->sas_port = arr_port;
455 sha->core.shost = shost;
456
457 sha->lldd_ha = kzalloc(sizeof(struct mvs_prv_info), GFP_KERNEL);
458 if (!sha->lldd_ha)
459 goto exit_free;
460
461 ((struct mvs_prv_info *)sha->lldd_ha)->n_host = core_nr;
462
463 shost->transportt = mvs_stt;
464 shost->max_id = MVS_MAX_DEVICES;
465 shost->max_lun = ~0;
466 shost->max_channel = 1;
467 shost->max_cmd_len = 16;
468
469 return 0;
470 exit_free:
471 kfree(arr_phy);
472 kfree(arr_port);
473 return -1;
474
475 }
476
477 static void mvs_post_sas_ha_init(struct Scsi_Host *shost,
478 const struct mvs_chip_info *chip_info)
479 {
480 int can_queue, i = 0, j = 0;
481 struct mvs_info *mvi = NULL;
482 struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
483 unsigned short nr_core = ((struct mvs_prv_info *)sha->lldd_ha)->n_host;
484
485 for (j = 0; j < nr_core; j++) {
486 mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[j];
487 for (i = 0; i < chip_info->n_phy; i++) {
488 sha->sas_phy[j * chip_info->n_phy + i] =
489 &mvi->phy[i].sas_phy;
490 sha->sas_port[j * chip_info->n_phy + i] =
491 &mvi->port[i].sas_port;
492 }
493 }
494
495 sha->sas_ha_name = DRV_NAME;
496 sha->dev = mvi->dev;
497 sha->lldd_module = THIS_MODULE;
498 sha->sas_addr = &mvi->sas_addr[0];
499
500 sha->num_phys = nr_core * chip_info->n_phy;
501
502 if (mvi->flags & MVF_FLAG_SOC)
503 can_queue = MVS_SOC_CAN_QUEUE;
504 else
505 can_queue = MVS_CHIP_SLOT_SZ;
506
507 shost->sg_tablesize = min_t(u16, SG_ALL, MVS_MAX_SG);
508 shost->can_queue = can_queue;
509 mvi->shost->cmd_per_lun = MVS_QUEUE_SIZE;
510 sha->core.shost = mvi->shost;
511 }
512
513 static void mvs_init_sas_add(struct mvs_info *mvi)
514 {
515 u8 i;
516 for (i = 0; i < mvi->chip->n_phy; i++) {
517 mvi->phy[i].dev_sas_addr = 0x5005043011ab0000ULL;
518 mvi->phy[i].dev_sas_addr =
519 cpu_to_be64((u64)(*(u64 *)&mvi->phy[i].dev_sas_addr));
520 }
521
522 memcpy(mvi->sas_addr, &mvi->phy[0].dev_sas_addr, SAS_ADDR_SIZE);
523 }
524
525 static int mvs_pci_init(struct pci_dev *pdev, const struct pci_device_id *ent)
526 {
527 unsigned int rc, nhost = 0;
528 struct mvs_info *mvi;
529 struct mvs_prv_info *mpi;
530 irq_handler_t irq_handler = mvs_interrupt;
531 struct Scsi_Host *shost = NULL;
532 const struct mvs_chip_info *chip;
533
534 dev_printk(KERN_INFO, &pdev->dev,
535 "mvsas: driver version %s\n", DRV_VERSION);
536 rc = pci_enable_device(pdev);
537 if (rc)
538 goto err_out_enable;
539
540 pci_set_master(pdev);
541
542 rc = pci_request_regions(pdev, DRV_NAME);
543 if (rc)
544 goto err_out_disable;
545
546 rc = pci_go_64(pdev);
547 if (rc)
548 goto err_out_regions;
549
550 shost = scsi_host_alloc(&mvs_sht, sizeof(void *));
551 if (!shost) {
552 rc = -ENOMEM;
553 goto err_out_regions;
554 }
555
556 chip = &mvs_chips[ent->driver_data];
557 SHOST_TO_SAS_HA(shost) =
558 kcalloc(1, sizeof(struct sas_ha_struct), GFP_KERNEL);
559 if (!SHOST_TO_SAS_HA(shost)) {
560 kfree(shost);
561 rc = -ENOMEM;
562 goto err_out_regions;
563 }
564
565 rc = mvs_prep_sas_ha_init(shost, chip);
566 if (rc) {
567 kfree(shost);
568 rc = -ENOMEM;
569 goto err_out_regions;
570 }
571
572 pci_set_drvdata(pdev, SHOST_TO_SAS_HA(shost));
573
574 do {
575 mvi = mvs_pci_alloc(pdev, ent, shost, nhost);
576 if (!mvi) {
577 rc = -ENOMEM;
578 goto err_out_regions;
579 }
580
581 memset(&mvi->hba_info_param, 0xFF,
582 sizeof(struct hba_info_page));
583
584 mvs_init_sas_add(mvi);
585
586 mvi->instance = nhost;
587 rc = MVS_CHIP_DISP->chip_init(mvi);
588 if (rc) {
589 mvs_free(mvi);
590 goto err_out_regions;
591 }
592 nhost++;
593 } while (nhost < chip->n_host);
594 mpi = (struct mvs_prv_info *)(SHOST_TO_SAS_HA(shost)->lldd_ha);
595 #ifdef CONFIG_SCSI_MVSAS_TASKLET
596 tasklet_init(&(mpi->mv_tasklet), mvs_tasklet,
597 (unsigned long)SHOST_TO_SAS_HA(shost));
598 #endif
599
600 mvs_post_sas_ha_init(shost, chip);
601
602 rc = scsi_add_host(shost, &pdev->dev);
603 if (rc)
604 goto err_out_shost;
605
606 rc = sas_register_ha(SHOST_TO_SAS_HA(shost));
607 if (rc)
608 goto err_out_shost;
609 rc = request_irq(pdev->irq, irq_handler, IRQF_SHARED,
610 DRV_NAME, SHOST_TO_SAS_HA(shost));
611 if (rc)
612 goto err_not_sas;
613
614 MVS_CHIP_DISP->interrupt_enable(mvi);
615
616 scsi_scan_host(mvi->shost);
617
618 return 0;
619
620 err_not_sas:
621 sas_unregister_ha(SHOST_TO_SAS_HA(shost));
622 err_out_shost:
623 scsi_remove_host(mvi->shost);
624 err_out_regions:
625 pci_release_regions(pdev);
626 err_out_disable:
627 pci_disable_device(pdev);
628 err_out_enable:
629 return rc;
630 }
631
632 static void mvs_pci_remove(struct pci_dev *pdev)
633 {
634 unsigned short core_nr, i = 0;
635 struct sas_ha_struct *sha = pci_get_drvdata(pdev);
636 struct mvs_info *mvi = NULL;
637
638 core_nr = ((struct mvs_prv_info *)sha->lldd_ha)->n_host;
639 mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[0];
640
641 #ifdef CONFIG_SCSI_MVSAS_TASKLET
642 tasklet_kill(&((struct mvs_prv_info *)sha->lldd_ha)->mv_tasklet);
643 #endif
644
645 sas_unregister_ha(sha);
646 sas_remove_host(mvi->shost);
647
648 MVS_CHIP_DISP->interrupt_disable(mvi);
649 free_irq(mvi->pdev->irq, sha);
650 for (i = 0; i < core_nr; i++) {
651 mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[i];
652 mvs_free(mvi);
653 }
654 kfree(sha->sas_phy);
655 kfree(sha->sas_port);
656 kfree(sha);
657 pci_release_regions(pdev);
658 pci_disable_device(pdev);
659 return;
660 }
661
662 static struct pci_device_id mvs_pci_table[] = {
663 { PCI_VDEVICE(MARVELL, 0x6320), chip_6320 },
664 { PCI_VDEVICE(MARVELL, 0x6340), chip_6440 },
665 {
666 .vendor = PCI_VENDOR_ID_MARVELL,
667 .device = 0x6440,
668 .subvendor = PCI_ANY_ID,
669 .subdevice = 0x6480,
670 .class = 0,
671 .class_mask = 0,
672 .driver_data = chip_6485,
673 },
674 { PCI_VDEVICE(MARVELL, 0x6440), chip_6440 },
675 { PCI_VDEVICE(MARVELL, 0x6485), chip_6485 },
676 { PCI_VDEVICE(MARVELL, 0x9480), chip_9480 },
677 { PCI_VDEVICE(MARVELL, 0x9180), chip_9180 },
678 { PCI_VDEVICE(ARECA, PCI_DEVICE_ID_ARECA_1300), chip_1300 },
679 { PCI_VDEVICE(ARECA, PCI_DEVICE_ID_ARECA_1320), chip_1320 },
680 { PCI_VDEVICE(ADAPTEC2, 0x0450), chip_6440 },
681 { PCI_VDEVICE(TTI, 0x2710), chip_9480 },
682 { PCI_VDEVICE(TTI, 0x2720), chip_9480 },
683 { PCI_VDEVICE(TTI, 0x2721), chip_9480 },
684 { PCI_VDEVICE(TTI, 0x2722), chip_9480 },
685 { PCI_VDEVICE(TTI, 0x2740), chip_9480 },
686 { PCI_VDEVICE(TTI, 0x2744), chip_9480 },
687 { PCI_VDEVICE(TTI, 0x2760), chip_9480 },
688 {
689 .vendor = PCI_VENDOR_ID_MARVELL_EXT,
690 .device = 0x9480,
691 .subvendor = PCI_ANY_ID,
692 .subdevice = 0x9480,
693 .class = 0,
694 .class_mask = 0,
695 .driver_data = chip_9480,
696 },
697 {
698 .vendor = PCI_VENDOR_ID_MARVELL_EXT,
699 .device = 0x9445,
700 .subvendor = PCI_ANY_ID,
701 .subdevice = 0x9480,
702 .class = 0,
703 .class_mask = 0,
704 .driver_data = chip_9445,
705 },
706 { PCI_VDEVICE(MARVELL_EXT, 0x9485), chip_9485 }, /* Marvell 9480/9485 (any vendor/model) */
707 { PCI_VDEVICE(OCZ, 0x1021), chip_9485}, /* OCZ RevoDrive3 */
708 { PCI_VDEVICE(OCZ, 0x1022), chip_9485}, /* OCZ RevoDrive3/zDriveR4 (exact model unknown) */
709 { PCI_VDEVICE(OCZ, 0x1040), chip_9485}, /* OCZ RevoDrive3/zDriveR4 (exact model unknown) */
710 { PCI_VDEVICE(OCZ, 0x1041), chip_9485}, /* OCZ RevoDrive3/zDriveR4 (exact model unknown) */
711 { PCI_VDEVICE(OCZ, 0x1042), chip_9485}, /* OCZ RevoDrive3/zDriveR4 (exact model unknown) */
712 { PCI_VDEVICE(OCZ, 0x1043), chip_9485}, /* OCZ RevoDrive3/zDriveR4 (exact model unknown) */
713 { PCI_VDEVICE(OCZ, 0x1044), chip_9485}, /* OCZ RevoDrive3/zDriveR4 (exact model unknown) */
714 { PCI_VDEVICE(OCZ, 0x1080), chip_9485}, /* OCZ RevoDrive3/zDriveR4 (exact model unknown) */
715 { PCI_VDEVICE(OCZ, 0x1083), chip_9485}, /* OCZ RevoDrive3/zDriveR4 (exact model unknown) */
716 { PCI_VDEVICE(OCZ, 0x1084), chip_9485}, /* OCZ RevoDrive3/zDriveR4 (exact model unknown) */
717
718 { } /* terminate list */
719 };
720
721 static struct pci_driver mvs_pci_driver = {
722 .name = DRV_NAME,
723 .id_table = mvs_pci_table,
724 .probe = mvs_pci_init,
725 .remove = mvs_pci_remove,
726 };
727
728 static ssize_t
729 mvs_show_driver_version(struct device *cdev,
730 struct device_attribute *attr, char *buffer)
731 {
732 return snprintf(buffer, PAGE_SIZE, "%s\n", DRV_VERSION);
733 }
734
735 static DEVICE_ATTR(driver_version,
736 S_IRUGO,
737 mvs_show_driver_version,
738 NULL);
739
740 static ssize_t
741 mvs_store_interrupt_coalescing(struct device *cdev,
742 struct device_attribute *attr,
743 const char *buffer, size_t size)
744 {
745 unsigned int val = 0;
746 struct mvs_info *mvi = NULL;
747 struct Scsi_Host *shost = class_to_shost(cdev);
748 struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
749 u8 i, core_nr;
750 if (buffer == NULL)
751 return size;
752
753 if (sscanf(buffer, "%u", &val) != 1)
754 return -EINVAL;
755
756 if (val >= 0x10000) {
757 mv_dprintk("interrupt coalescing timer %d us is"
758 "too long\n", val);
759 return strlen(buffer);
760 }
761
762 interrupt_coalescing = val;
763
764 core_nr = ((struct mvs_prv_info *)sha->lldd_ha)->n_host;
765 mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[0];
766
767 if (unlikely(!mvi))
768 return -EINVAL;
769
770 for (i = 0; i < core_nr; i++) {
771 mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[i];
772 if (MVS_CHIP_DISP->tune_interrupt)
773 MVS_CHIP_DISP->tune_interrupt(mvi,
774 interrupt_coalescing);
775 }
776 mv_dprintk("set interrupt coalescing time to %d us\n",
777 interrupt_coalescing);
778 return strlen(buffer);
779 }
780
781 static ssize_t mvs_show_interrupt_coalescing(struct device *cdev,
782 struct device_attribute *attr, char *buffer)
783 {
784 return snprintf(buffer, PAGE_SIZE, "%d\n", interrupt_coalescing);
785 }
786
787 static DEVICE_ATTR(interrupt_coalescing,
788 S_IRUGO|S_IWUSR,
789 mvs_show_interrupt_coalescing,
790 mvs_store_interrupt_coalescing);
791
792 /* task handler */
793 struct task_struct *mvs_th;
794 static int __init mvs_init(void)
795 {
796 int rc;
797 mvs_stt = sas_domain_attach_transport(&mvs_transport_ops);
798 if (!mvs_stt)
799 return -ENOMEM;
800
801 rc = pci_register_driver(&mvs_pci_driver);
802 if (rc)
803 goto err_out;
804
805 return 0;
806
807 err_out:
808 sas_release_transport(mvs_stt);
809 return rc;
810 }
811
812 static void __exit mvs_exit(void)
813 {
814 pci_unregister_driver(&mvs_pci_driver);
815 sas_release_transport(mvs_stt);
816 }
817
818 struct device_attribute *mvst_host_attrs[] = {
819 &dev_attr_driver_version,
820 &dev_attr_interrupt_coalescing,
821 NULL,
822 };
823
824 module_init(mvs_init);
825 module_exit(mvs_exit);
826
827 MODULE_AUTHOR("Jeff Garzik <jgarzik@pobox.com>");
828 MODULE_DESCRIPTION("Marvell 88SE6440 SAS/SATA controller driver");
829 MODULE_VERSION(DRV_VERSION);
830 MODULE_LICENSE("GPL");
831 #ifdef CONFIG_PCI
832 MODULE_DEVICE_TABLE(pci, mvs_pci_table);
833 #endif
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