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[karo-tx-linux.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 static int lldd_max_execute_num = 1;
30 module_param_named(collector, lldd_max_execute_num, int, S_IRUGO);
31 MODULE_PARM_DESC(collector, "\n"
32         "\tIf greater than one, tells the SAS Layer to run in Task Collector\n"
33         "\tMode.  If 1 or 0, tells the SAS Layer to run in Direct Mode.\n"
34         "\tThe mvsas SAS LLDD supports both modes.\n"
35         "\tDefault: 1 (Direct Mode).\n");
36
37 int interrupt_coalescing = 0x80;
38
39 static struct scsi_transport_template *mvs_stt;
40 struct kmem_cache *mvs_task_list_cache;
41 static const struct mvs_chip_info mvs_chips[] = {
42         [chip_6320] =   { 1, 2, 0x400, 17, 16, 6,  9, &mvs_64xx_dispatch, },
43         [chip_6440] =   { 1, 4, 0x400, 17, 16, 6,  9, &mvs_64xx_dispatch, },
44         [chip_6485] =   { 1, 8, 0x800, 33, 32, 6, 10, &mvs_64xx_dispatch, },
45         [chip_9180] =   { 2, 4, 0x800, 17, 64, 8,  9, &mvs_94xx_dispatch, },
46         [chip_9480] =   { 2, 4, 0x800, 17, 64, 8,  9, &mvs_94xx_dispatch, },
47         [chip_9445] =   { 1, 4, 0x800, 17, 64, 8, 11, &mvs_94xx_dispatch, },
48         [chip_9485] =   { 2, 4, 0x800, 17, 64, 8, 11, &mvs_94xx_dispatch, },
49         [chip_1300] =   { 1, 4, 0x400, 17, 16, 6,  9, &mvs_64xx_dispatch, },
50         [chip_1320] =   { 2, 4, 0x800, 17, 64, 8,  9, &mvs_94xx_dispatch, },
51 };
52
53 struct device_attribute *mvst_host_attrs[];
54
55 #define SOC_SAS_NUM 2
56
57 static struct scsi_host_template mvs_sht = {
58         .module                 = THIS_MODULE,
59         .name                   = DRV_NAME,
60         .queuecommand           = sas_queuecommand,
61         .target_alloc           = sas_target_alloc,
62         .slave_configure        = sas_slave_configure,
63         .scan_finished          = mvs_scan_finished,
64         .scan_start             = mvs_scan_start,
65         .change_queue_depth     = sas_change_queue_depth,
66         .change_queue_type      = sas_change_queue_type,
67         .bios_param             = sas_bios_param,
68         .can_queue              = 1,
69         .cmd_per_lun            = 1,
70         .this_id                = -1,
71         .sg_tablesize           = SG_ALL,
72         .max_sectors            = SCSI_DEFAULT_MAX_SECTORS,
73         .use_clustering         = ENABLE_CLUSTERING,
74         .eh_device_reset_handler = sas_eh_device_reset_handler,
75         .eh_bus_reset_handler   = sas_eh_bus_reset_handler,
76         .target_destroy         = sas_target_destroy,
77         .ioctl                  = sas_ioctl,
78         .shost_attrs            = mvst_host_attrs,
79 };
80
81 static struct sas_domain_function_template mvs_transport_ops = {
82         .lldd_dev_found         = mvs_dev_found,
83         .lldd_dev_gone          = mvs_dev_gone,
84         .lldd_execute_task      = mvs_queue_command,
85         .lldd_control_phy       = mvs_phy_control,
86
87         .lldd_abort_task        = mvs_abort_task,
88         .lldd_abort_task_set    = mvs_abort_task_set,
89         .lldd_clear_aca         = mvs_clear_aca,
90         .lldd_clear_task_set    = mvs_clear_task_set,
91         .lldd_I_T_nexus_reset   = mvs_I_T_nexus_reset,
92         .lldd_lu_reset          = mvs_lu_reset,
93         .lldd_query_task        = mvs_query_task,
94         .lldd_port_formed       = mvs_port_formed,
95         .lldd_port_deformed     = mvs_port_deformed,
96
97 };
98
99 static void mvs_phy_init(struct mvs_info *mvi, int phy_id)
100 {
101         struct mvs_phy *phy = &mvi->phy[phy_id];
102         struct asd_sas_phy *sas_phy = &phy->sas_phy;
103
104         phy->mvi = mvi;
105         phy->port = NULL;
106         init_timer(&phy->timer);
107         sas_phy->enabled = (phy_id < mvi->chip->n_phy) ? 1 : 0;
108         sas_phy->class = SAS;
109         sas_phy->iproto = SAS_PROTOCOL_ALL;
110         sas_phy->tproto = 0;
111         sas_phy->type = PHY_TYPE_PHYSICAL;
112         sas_phy->role = PHY_ROLE_INITIATOR;
113         sas_phy->oob_mode = OOB_NOT_CONNECTED;
114         sas_phy->linkrate = SAS_LINK_RATE_UNKNOWN;
115
116         sas_phy->id = phy_id;
117         sas_phy->sas_addr = &mvi->sas_addr[0];
118         sas_phy->frame_rcvd = &phy->frame_rcvd[0];
119         sas_phy->ha = (struct sas_ha_struct *)mvi->shost->hostdata;
120         sas_phy->lldd_phy = phy;
121 }
122
123 static void mvs_free(struct mvs_info *mvi)
124 {
125         struct mvs_wq *mwq;
126         int slot_nr;
127
128         if (!mvi)
129                 return;
130
131         if (mvi->flags & MVF_FLAG_SOC)
132                 slot_nr = MVS_SOC_SLOTS;
133         else
134                 slot_nr = MVS_CHIP_SLOT_SZ;
135
136         if (mvi->dma_pool)
137                 pci_pool_destroy(mvi->dma_pool);
138
139         if (mvi->tx)
140                 dma_free_coherent(mvi->dev,
141                                   sizeof(*mvi->tx) * MVS_CHIP_SLOT_SZ,
142                                   mvi->tx, mvi->tx_dma);
143         if (mvi->rx_fis)
144                 dma_free_coherent(mvi->dev, MVS_RX_FISL_SZ,
145                                   mvi->rx_fis, mvi->rx_fis_dma);
146         if (mvi->rx)
147                 dma_free_coherent(mvi->dev,
148                                   sizeof(*mvi->rx) * (MVS_RX_RING_SZ + 1),
149                                   mvi->rx, mvi->rx_dma);
150         if (mvi->slot)
151                 dma_free_coherent(mvi->dev,
152                                   sizeof(*mvi->slot) * slot_nr,
153                                   mvi->slot, mvi->slot_dma);
154
155         if (mvi->bulk_buffer)
156                 dma_free_coherent(mvi->dev, TRASH_BUCKET_SIZE,
157                                   mvi->bulk_buffer, mvi->bulk_buffer_dma);
158         if (mvi->bulk_buffer1)
159                 dma_free_coherent(mvi->dev, TRASH_BUCKET_SIZE,
160                                   mvi->bulk_buffer1, mvi->bulk_buffer_dma1);
161
162         MVS_CHIP_DISP->chip_iounmap(mvi);
163         if (mvi->shost)
164                 scsi_host_put(mvi->shost);
165         list_for_each_entry(mwq, &mvi->wq_list, entry)
166                 cancel_delayed_work(&mwq->work_q);
167         kfree(mvi->tags);
168         kfree(mvi);
169 }
170
171 #ifdef CONFIG_SCSI_MVSAS_TASKLET
172 static void mvs_tasklet(unsigned long opaque)
173 {
174         u32 stat;
175         u16 core_nr, i = 0;
176
177         struct mvs_info *mvi;
178         struct sas_ha_struct *sha = (struct sas_ha_struct *)opaque;
179
180         core_nr = ((struct mvs_prv_info *)sha->lldd_ha)->n_host;
181         mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[0];
182
183         if (unlikely(!mvi))
184                 BUG_ON(1);
185
186         stat = MVS_CHIP_DISP->isr_status(mvi, mvi->pdev->irq);
187         if (!stat)
188                 goto out;
189
190         for (i = 0; i < core_nr; i++) {
191                 mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[i];
192                 MVS_CHIP_DISP->isr(mvi, mvi->pdev->irq, stat);
193         }
194 out:
195         MVS_CHIP_DISP->interrupt_enable(mvi);
196
197 }
198 #endif
199
200 static irqreturn_t mvs_interrupt(int irq, void *opaque)
201 {
202         u32 core_nr;
203         u32 stat;
204         struct mvs_info *mvi;
205         struct sas_ha_struct *sha = opaque;
206 #ifndef CONFIG_SCSI_MVSAS_TASKLET
207         u32 i;
208 #endif
209
210         core_nr = ((struct mvs_prv_info *)sha->lldd_ha)->n_host;
211         mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[0];
212
213         if (unlikely(!mvi))
214                 return IRQ_NONE;
215 #ifdef CONFIG_SCSI_MVSAS_TASKLET
216         MVS_CHIP_DISP->interrupt_disable(mvi);
217 #endif
218
219         stat = MVS_CHIP_DISP->isr_status(mvi, irq);
220         if (!stat) {
221         #ifdef CONFIG_SCSI_MVSAS_TASKLET
222                 MVS_CHIP_DISP->interrupt_enable(mvi);
223         #endif
224                 return IRQ_NONE;
225         }
226
227 #ifdef CONFIG_SCSI_MVSAS_TASKLET
228         tasklet_schedule(&((struct mvs_prv_info *)sha->lldd_ha)->mv_tasklet);
229 #else
230         for (i = 0; i < core_nr; i++) {
231                 mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[i];
232                 MVS_CHIP_DISP->isr(mvi, irq, stat);
233         }
234 #endif
235         return IRQ_HANDLED;
236 }
237
238 static int mvs_alloc(struct mvs_info *mvi, struct Scsi_Host *shost)
239 {
240         int i = 0, slot_nr;
241         char pool_name[32];
242
243         if (mvi->flags & MVF_FLAG_SOC)
244                 slot_nr = MVS_SOC_SLOTS;
245         else
246                 slot_nr = MVS_CHIP_SLOT_SZ;
247
248         spin_lock_init(&mvi->lock);
249         for (i = 0; i < mvi->chip->n_phy; i++) {
250                 mvs_phy_init(mvi, i);
251                 mvi->port[i].wide_port_phymap = 0;
252                 mvi->port[i].port_attached = 0;
253                 INIT_LIST_HEAD(&mvi->port[i].list);
254         }
255         for (i = 0; i < MVS_MAX_DEVICES; i++) {
256                 mvi->devices[i].taskfileset = MVS_ID_NOT_MAPPED;
257                 mvi->devices[i].dev_type = NO_DEVICE;
258                 mvi->devices[i].device_id = i;
259                 mvi->devices[i].dev_status = MVS_DEV_NORMAL;
260                 init_timer(&mvi->devices[i].timer);
261         }
262
263         /*
264          * alloc and init our DMA areas
265          */
266         mvi->tx = dma_alloc_coherent(mvi->dev,
267                                      sizeof(*mvi->tx) * MVS_CHIP_SLOT_SZ,
268                                      &mvi->tx_dma, GFP_KERNEL);
269         if (!mvi->tx)
270                 goto err_out;
271         memset(mvi->tx, 0, sizeof(*mvi->tx) * MVS_CHIP_SLOT_SZ);
272         mvi->rx_fis = dma_alloc_coherent(mvi->dev, MVS_RX_FISL_SZ,
273                                          &mvi->rx_fis_dma, GFP_KERNEL);
274         if (!mvi->rx_fis)
275                 goto err_out;
276         memset(mvi->rx_fis, 0, MVS_RX_FISL_SZ);
277
278         mvi->rx = dma_alloc_coherent(mvi->dev,
279                                      sizeof(*mvi->rx) * (MVS_RX_RING_SZ + 1),
280                                      &mvi->rx_dma, GFP_KERNEL);
281         if (!mvi->rx)
282                 goto err_out;
283         memset(mvi->rx, 0, sizeof(*mvi->rx) * (MVS_RX_RING_SZ + 1));
284         mvi->rx[0] = cpu_to_le32(0xfff);
285         mvi->rx_cons = 0xfff;
286
287         mvi->slot = dma_alloc_coherent(mvi->dev,
288                                        sizeof(*mvi->slot) * slot_nr,
289                                        &mvi->slot_dma, GFP_KERNEL);
290         if (!mvi->slot)
291                 goto err_out;
292         memset(mvi->slot, 0, sizeof(*mvi->slot) * slot_nr);
293
294         mvi->bulk_buffer = dma_alloc_coherent(mvi->dev,
295                                        TRASH_BUCKET_SIZE,
296                                        &mvi->bulk_buffer_dma, GFP_KERNEL);
297         if (!mvi->bulk_buffer)
298                 goto err_out;
299
300         mvi->bulk_buffer1 = dma_alloc_coherent(mvi->dev,
301                                        TRASH_BUCKET_SIZE,
302                                        &mvi->bulk_buffer_dma1, GFP_KERNEL);
303         if (!mvi->bulk_buffer1)
304                 goto err_out;
305
306         sprintf(pool_name, "%s%d", "mvs_dma_pool", mvi->id);
307         mvi->dma_pool = pci_pool_create(pool_name, mvi->pdev, MVS_SLOT_BUF_SZ, 16, 0);
308         if (!mvi->dma_pool) {
309                         printk(KERN_DEBUG "failed to create dma pool %s.\n", pool_name);
310                         goto err_out;
311         }
312         mvi->tags_num = slot_nr;
313
314         /* Initialize tags */
315         mvs_tag_init(mvi);
316         return 0;
317 err_out:
318         return 1;
319 }
320
321
322 int mvs_ioremap(struct mvs_info *mvi, int bar, int bar_ex)
323 {
324         unsigned long res_start, res_len, res_flag, res_flag_ex = 0;
325         struct pci_dev *pdev = mvi->pdev;
326         if (bar_ex != -1) {
327                 /*
328                  * ioremap main and peripheral registers
329                  */
330                 res_start = pci_resource_start(pdev, bar_ex);
331                 res_len = pci_resource_len(pdev, bar_ex);
332                 if (!res_start || !res_len)
333                         goto err_out;
334
335                 res_flag_ex = pci_resource_flags(pdev, bar_ex);
336                 if (res_flag_ex & IORESOURCE_MEM) {
337                         if (res_flag_ex & IORESOURCE_CACHEABLE)
338                                 mvi->regs_ex = ioremap(res_start, res_len);
339                         else
340                                 mvi->regs_ex = ioremap_nocache(res_start,
341                                                 res_len);
342                 } else
343                         mvi->regs_ex = (void *)res_start;
344                 if (!mvi->regs_ex)
345                         goto err_out;
346         }
347
348         res_start = pci_resource_start(pdev, bar);
349         res_len = pci_resource_len(pdev, bar);
350         if (!res_start || !res_len)
351                 goto err_out;
352
353         res_flag = pci_resource_flags(pdev, bar);
354         if (res_flag & IORESOURCE_CACHEABLE)
355                 mvi->regs = ioremap(res_start, res_len);
356         else
357                 mvi->regs = ioremap_nocache(res_start, res_len);
358
359         if (!mvi->regs) {
360                 if (mvi->regs_ex && (res_flag_ex & IORESOURCE_MEM))
361                         iounmap(mvi->regs_ex);
362                 mvi->regs_ex = NULL;
363                 goto err_out;
364         }
365
366         return 0;
367 err_out:
368         return -1;
369 }
370
371 void mvs_iounmap(void __iomem *regs)
372 {
373         iounmap(regs);
374 }
375
376 static struct mvs_info *mvs_pci_alloc(struct pci_dev *pdev,
377                                 const struct pci_device_id *ent,
378                                 struct Scsi_Host *shost, unsigned int id)
379 {
380         struct mvs_info *mvi = NULL;
381         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
382
383         mvi = kzalloc(sizeof(*mvi) +
384                 (1L << mvs_chips[ent->driver_data].slot_width) *
385                 sizeof(struct mvs_slot_info), GFP_KERNEL);
386         if (!mvi)
387                 return NULL;
388
389         mvi->pdev = pdev;
390         mvi->dev = &pdev->dev;
391         mvi->chip_id = ent->driver_data;
392         mvi->chip = &mvs_chips[mvi->chip_id];
393         INIT_LIST_HEAD(&mvi->wq_list);
394
395         ((struct mvs_prv_info *)sha->lldd_ha)->mvi[id] = mvi;
396         ((struct mvs_prv_info *)sha->lldd_ha)->n_phy = mvi->chip->n_phy;
397
398         mvi->id = id;
399         mvi->sas = sha;
400         mvi->shost = shost;
401
402         mvi->tags = kzalloc(MVS_CHIP_SLOT_SZ>>3, GFP_KERNEL);
403         if (!mvi->tags)
404                 goto err_out;
405
406         if (MVS_CHIP_DISP->chip_ioremap(mvi))
407                 goto err_out;
408         if (!mvs_alloc(mvi, shost))
409                 return mvi;
410 err_out:
411         mvs_free(mvi);
412         return NULL;
413 }
414
415 static int pci_go_64(struct pci_dev *pdev)
416 {
417         int rc;
418
419         if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
420                 rc = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
421                 if (rc) {
422                         rc = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
423                         if (rc) {
424                                 dev_printk(KERN_ERR, &pdev->dev,
425                                            "64-bit DMA enable failed\n");
426                                 return rc;
427                         }
428                 }
429         } else {
430                 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
431                 if (rc) {
432                         dev_printk(KERN_ERR, &pdev->dev,
433                                    "32-bit DMA enable failed\n");
434                         return rc;
435                 }
436                 rc = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
437                 if (rc) {
438                         dev_printk(KERN_ERR, &pdev->dev,
439                                    "32-bit consistent DMA enable failed\n");
440                         return rc;
441                 }
442         }
443
444         return rc;
445 }
446
447 static int mvs_prep_sas_ha_init(struct Scsi_Host *shost,
448                                 const struct mvs_chip_info *chip_info)
449 {
450         int phy_nr, port_nr; unsigned short core_nr;
451         struct asd_sas_phy **arr_phy;
452         struct asd_sas_port **arr_port;
453         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
454
455         core_nr = chip_info->n_host;
456         phy_nr  = core_nr * chip_info->n_phy;
457         port_nr = phy_nr;
458
459         memset(sha, 0x00, sizeof(struct sas_ha_struct));
460         arr_phy  = kcalloc(phy_nr, sizeof(void *), GFP_KERNEL);
461         arr_port = kcalloc(port_nr, sizeof(void *), GFP_KERNEL);
462         if (!arr_phy || !arr_port)
463                 goto exit_free;
464
465         sha->sas_phy = arr_phy;
466         sha->sas_port = arr_port;
467         sha->core.shost = shost;
468
469         sha->lldd_ha = kzalloc(sizeof(struct mvs_prv_info), GFP_KERNEL);
470         if (!sha->lldd_ha)
471                 goto exit_free;
472
473         ((struct mvs_prv_info *)sha->lldd_ha)->n_host = core_nr;
474
475         shost->transportt = mvs_stt;
476         shost->max_id = MVS_MAX_DEVICES;
477         shost->max_lun = ~0;
478         shost->max_channel = 1;
479         shost->max_cmd_len = 16;
480
481         return 0;
482 exit_free:
483         kfree(arr_phy);
484         kfree(arr_port);
485         return -1;
486
487 }
488
489 static void  mvs_post_sas_ha_init(struct Scsi_Host *shost,
490                         const struct mvs_chip_info *chip_info)
491 {
492         int can_queue, i = 0, j = 0;
493         struct mvs_info *mvi = NULL;
494         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
495         unsigned short nr_core = ((struct mvs_prv_info *)sha->lldd_ha)->n_host;
496
497         for (j = 0; j < nr_core; j++) {
498                 mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[j];
499                 for (i = 0; i < chip_info->n_phy; i++) {
500                         sha->sas_phy[j * chip_info->n_phy  + i] =
501                                 &mvi->phy[i].sas_phy;
502                         sha->sas_port[j * chip_info->n_phy + i] =
503                                 &mvi->port[i].sas_port;
504                 }
505         }
506
507         sha->sas_ha_name = DRV_NAME;
508         sha->dev = mvi->dev;
509         sha->lldd_module = THIS_MODULE;
510         sha->sas_addr = &mvi->sas_addr[0];
511
512         sha->num_phys = nr_core * chip_info->n_phy;
513
514         sha->lldd_max_execute_num = lldd_max_execute_num;
515
516         if (mvi->flags & MVF_FLAG_SOC)
517                 can_queue = MVS_SOC_CAN_QUEUE;
518         else
519                 can_queue = MVS_CHIP_SLOT_SZ;
520
521         sha->lldd_queue_size = can_queue;
522         shost->sg_tablesize = min_t(u16, SG_ALL, MVS_MAX_SG);
523         shost->can_queue = can_queue;
524         mvi->shost->cmd_per_lun = MVS_QUEUE_SIZE;
525         sha->core.shost = mvi->shost;
526 }
527
528 static void mvs_init_sas_add(struct mvs_info *mvi)
529 {
530         u8 i;
531         for (i = 0; i < mvi->chip->n_phy; i++) {
532                 mvi->phy[i].dev_sas_addr = 0x5005043011ab0000ULL;
533                 mvi->phy[i].dev_sas_addr =
534                         cpu_to_be64((u64)(*(u64 *)&mvi->phy[i].dev_sas_addr));
535         }
536
537         memcpy(mvi->sas_addr, &mvi->phy[0].dev_sas_addr, SAS_ADDR_SIZE);
538 }
539
540 static int mvs_pci_init(struct pci_dev *pdev, const struct pci_device_id *ent)
541 {
542         unsigned int rc, nhost = 0;
543         struct mvs_info *mvi;
544         struct mvs_prv_info *mpi;
545         irq_handler_t irq_handler = mvs_interrupt;
546         struct Scsi_Host *shost = NULL;
547         const struct mvs_chip_info *chip;
548
549         dev_printk(KERN_INFO, &pdev->dev,
550                 "mvsas: driver version %s\n", DRV_VERSION);
551         rc = pci_enable_device(pdev);
552         if (rc)
553                 goto err_out_enable;
554
555         pci_set_master(pdev);
556
557         rc = pci_request_regions(pdev, DRV_NAME);
558         if (rc)
559                 goto err_out_disable;
560
561         rc = pci_go_64(pdev);
562         if (rc)
563                 goto err_out_regions;
564
565         shost = scsi_host_alloc(&mvs_sht, sizeof(void *));
566         if (!shost) {
567                 rc = -ENOMEM;
568                 goto err_out_regions;
569         }
570
571         chip = &mvs_chips[ent->driver_data];
572         SHOST_TO_SAS_HA(shost) =
573                 kcalloc(1, sizeof(struct sas_ha_struct), GFP_KERNEL);
574         if (!SHOST_TO_SAS_HA(shost)) {
575                 kfree(shost);
576                 rc = -ENOMEM;
577                 goto err_out_regions;
578         }
579
580         rc = mvs_prep_sas_ha_init(shost, chip);
581         if (rc) {
582                 kfree(shost);
583                 rc = -ENOMEM;
584                 goto err_out_regions;
585         }
586
587         pci_set_drvdata(pdev, SHOST_TO_SAS_HA(shost));
588
589         do {
590                 mvi = mvs_pci_alloc(pdev, ent, shost, nhost);
591                 if (!mvi) {
592                         rc = -ENOMEM;
593                         goto err_out_regions;
594                 }
595
596                 memset(&mvi->hba_info_param, 0xFF,
597                         sizeof(struct hba_info_page));
598
599                 mvs_init_sas_add(mvi);
600
601                 mvi->instance = nhost;
602                 rc = MVS_CHIP_DISP->chip_init(mvi);
603                 if (rc) {
604                         mvs_free(mvi);
605                         goto err_out_regions;
606                 }
607                 nhost++;
608         } while (nhost < chip->n_host);
609         mpi = (struct mvs_prv_info *)(SHOST_TO_SAS_HA(shost)->lldd_ha);
610 #ifdef CONFIG_SCSI_MVSAS_TASKLET
611         tasklet_init(&(mpi->mv_tasklet), mvs_tasklet,
612                      (unsigned long)SHOST_TO_SAS_HA(shost));
613 #endif
614
615         mvs_post_sas_ha_init(shost, chip);
616
617         rc = scsi_add_host(shost, &pdev->dev);
618         if (rc)
619                 goto err_out_shost;
620
621         rc = sas_register_ha(SHOST_TO_SAS_HA(shost));
622         if (rc)
623                 goto err_out_shost;
624         rc = request_irq(pdev->irq, irq_handler, IRQF_SHARED,
625                 DRV_NAME, SHOST_TO_SAS_HA(shost));
626         if (rc)
627                 goto err_not_sas;
628
629         MVS_CHIP_DISP->interrupt_enable(mvi);
630
631         scsi_scan_host(mvi->shost);
632
633         return 0;
634
635 err_not_sas:
636         sas_unregister_ha(SHOST_TO_SAS_HA(shost));
637 err_out_shost:
638         scsi_remove_host(mvi->shost);
639 err_out_regions:
640         pci_release_regions(pdev);
641 err_out_disable:
642         pci_disable_device(pdev);
643 err_out_enable:
644         return rc;
645 }
646
647 static void mvs_pci_remove(struct pci_dev *pdev)
648 {
649         unsigned short core_nr, i = 0;
650         struct sas_ha_struct *sha = pci_get_drvdata(pdev);
651         struct mvs_info *mvi = NULL;
652
653         core_nr = ((struct mvs_prv_info *)sha->lldd_ha)->n_host;
654         mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[0];
655
656 #ifdef CONFIG_SCSI_MVSAS_TASKLET
657         tasklet_kill(&((struct mvs_prv_info *)sha->lldd_ha)->mv_tasklet);
658 #endif
659
660         pci_set_drvdata(pdev, NULL);
661         sas_unregister_ha(sha);
662         sas_remove_host(mvi->shost);
663         scsi_remove_host(mvi->shost);
664
665         MVS_CHIP_DISP->interrupt_disable(mvi);
666         free_irq(mvi->pdev->irq, sha);
667         for (i = 0; i < core_nr; i++) {
668                 mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[i];
669                 mvs_free(mvi);
670         }
671         kfree(sha->sas_phy);
672         kfree(sha->sas_port);
673         kfree(sha);
674         pci_release_regions(pdev);
675         pci_disable_device(pdev);
676         return;
677 }
678
679 static struct pci_device_id mvs_pci_table[] = {
680         { PCI_VDEVICE(MARVELL, 0x6320), chip_6320 },
681         { PCI_VDEVICE(MARVELL, 0x6340), chip_6440 },
682         {
683                 .vendor         = PCI_VENDOR_ID_MARVELL,
684                 .device         = 0x6440,
685                 .subvendor      = PCI_ANY_ID,
686                 .subdevice      = 0x6480,
687                 .class          = 0,
688                 .class_mask     = 0,
689                 .driver_data    = chip_6485,
690         },
691         { PCI_VDEVICE(MARVELL, 0x6440), chip_6440 },
692         { PCI_VDEVICE(MARVELL, 0x6485), chip_6485 },
693         { PCI_VDEVICE(MARVELL, 0x9480), chip_9480 },
694         { PCI_VDEVICE(MARVELL, 0x9180), chip_9180 },
695         { PCI_VDEVICE(ARECA, PCI_DEVICE_ID_ARECA_1300), chip_1300 },
696         { PCI_VDEVICE(ARECA, PCI_DEVICE_ID_ARECA_1320), chip_1320 },
697         { PCI_VDEVICE(ADAPTEC2, 0x0450), chip_6440 },
698         { PCI_VDEVICE(TTI, 0x2710), chip_9480 },
699         { PCI_VDEVICE(TTI, 0x2720), chip_9480 },
700         { PCI_VDEVICE(TTI, 0x2721), chip_9480 },
701         { PCI_VDEVICE(TTI, 0x2722), chip_9480 },
702         { PCI_VDEVICE(TTI, 0x2740), chip_9480 },
703         { PCI_VDEVICE(TTI, 0x2744), chip_9480 },
704         { PCI_VDEVICE(TTI, 0x2760), chip_9480 },
705         {
706                 .vendor         = 0x1b4b,
707                 .device         = 0x9480,
708                 .subvendor      = PCI_ANY_ID,
709                 .subdevice      = 0x9480,
710                 .class          = 0,
711                 .class_mask     = 0,
712                 .driver_data    = chip_9480,
713         },
714         {
715                 .vendor         = 0x1b4b,
716                 .device         = 0x9445,
717                 .subvendor      = PCI_ANY_ID,
718                 .subdevice      = 0x9480,
719                 .class          = 0,
720                 .class_mask     = 0,
721                 .driver_data    = chip_9445,
722         },
723         {
724                 .vendor         = 0x1b4b,
725                 .device         = 0x9485,
726                 .subvendor      = PCI_ANY_ID,
727                 .subdevice      = 0x9480,
728                 .class          = 0,
729                 .class_mask     = 0,
730                 .driver_data    = chip_9485,
731         },
732         { PCI_VDEVICE(OCZ, 0x1021), chip_9485}, /* OCZ RevoDrive3 */
733         { PCI_VDEVICE(OCZ, 0x1022), chip_9485}, /* OCZ RevoDrive3/zDriveR4 (exact model unknown) */
734         { PCI_VDEVICE(OCZ, 0x1040), chip_9485}, /* OCZ RevoDrive3/zDriveR4 (exact model unknown) */
735         { PCI_VDEVICE(OCZ, 0x1041), chip_9485}, /* OCZ RevoDrive3/zDriveR4 (exact model unknown) */
736         { PCI_VDEVICE(OCZ, 0x1042), chip_9485}, /* OCZ RevoDrive3/zDriveR4 (exact model unknown) */
737         { PCI_VDEVICE(OCZ, 0x1043), chip_9485}, /* OCZ RevoDrive3/zDriveR4 (exact model unknown) */
738         { PCI_VDEVICE(OCZ, 0x1044), chip_9485}, /* OCZ RevoDrive3/zDriveR4 (exact model unknown) */
739         { PCI_VDEVICE(OCZ, 0x1080), chip_9485}, /* OCZ RevoDrive3/zDriveR4 (exact model unknown) */
740         { PCI_VDEVICE(OCZ, 0x1083), chip_9485}, /* OCZ RevoDrive3/zDriveR4 (exact model unknown) */
741         { PCI_VDEVICE(OCZ, 0x1084), chip_9485}, /* OCZ RevoDrive3/zDriveR4 (exact model unknown) */
742
743         { }     /* terminate list */
744 };
745
746 static struct pci_driver mvs_pci_driver = {
747         .name           = DRV_NAME,
748         .id_table       = mvs_pci_table,
749         .probe          = mvs_pci_init,
750         .remove         = mvs_pci_remove,
751 };
752
753 static ssize_t
754 mvs_show_driver_version(struct device *cdev,
755                 struct device_attribute *attr,  char *buffer)
756 {
757         return snprintf(buffer, PAGE_SIZE, "%s\n", DRV_VERSION);
758 }
759
760 static DEVICE_ATTR(driver_version,
761                          S_IRUGO,
762                          mvs_show_driver_version,
763                          NULL);
764
765 static ssize_t
766 mvs_store_interrupt_coalescing(struct device *cdev,
767                         struct device_attribute *attr,
768                         const char *buffer, size_t size)
769 {
770         int val = 0;
771         struct mvs_info *mvi = NULL;
772         struct Scsi_Host *shost = class_to_shost(cdev);
773         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
774         u8 i, core_nr;
775         if (buffer == NULL)
776                 return size;
777
778         if (sscanf(buffer, "%d", &val) != 1)
779                 return -EINVAL;
780
781         if (val >= 0x10000) {
782                 mv_dprintk("interrupt coalescing timer %d us is"
783                         "too long\n", val);
784                 return strlen(buffer);
785         }
786
787         interrupt_coalescing = val;
788
789         core_nr = ((struct mvs_prv_info *)sha->lldd_ha)->n_host;
790         mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[0];
791
792         if (unlikely(!mvi))
793                 return -EINVAL;
794
795         for (i = 0; i < core_nr; i++) {
796                 mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[i];
797                 if (MVS_CHIP_DISP->tune_interrupt)
798                         MVS_CHIP_DISP->tune_interrupt(mvi,
799                                 interrupt_coalescing);
800         }
801         mv_dprintk("set interrupt coalescing time to %d us\n",
802                 interrupt_coalescing);
803         return strlen(buffer);
804 }
805
806 static ssize_t mvs_show_interrupt_coalescing(struct device *cdev,
807                         struct device_attribute *attr, char *buffer)
808 {
809         return snprintf(buffer, PAGE_SIZE, "%d\n", interrupt_coalescing);
810 }
811
812 static DEVICE_ATTR(interrupt_coalescing,
813                          S_IRUGO|S_IWUSR,
814                          mvs_show_interrupt_coalescing,
815                          mvs_store_interrupt_coalescing);
816
817 /* task handler */
818 struct task_struct *mvs_th;
819 static int __init mvs_init(void)
820 {
821         int rc;
822         mvs_stt = sas_domain_attach_transport(&mvs_transport_ops);
823         if (!mvs_stt)
824                 return -ENOMEM;
825
826         mvs_task_list_cache = kmem_cache_create("mvs_task_list", sizeof(struct mvs_task_list),
827                                                          0, SLAB_HWCACHE_ALIGN, NULL);
828         if (!mvs_task_list_cache) {
829                 rc = -ENOMEM;
830                 mv_printk("%s: mvs_task_list_cache alloc failed! \n", __func__);
831                 goto err_out;
832         }
833
834         rc = pci_register_driver(&mvs_pci_driver);
835
836         if (rc)
837                 goto err_out;
838
839         return 0;
840
841 err_out:
842         sas_release_transport(mvs_stt);
843         return rc;
844 }
845
846 static void __exit mvs_exit(void)
847 {
848         pci_unregister_driver(&mvs_pci_driver);
849         sas_release_transport(mvs_stt);
850         kmem_cache_destroy(mvs_task_list_cache);
851 }
852
853 struct device_attribute *mvst_host_attrs[] = {
854         &dev_attr_driver_version,
855         &dev_attr_interrupt_coalescing,
856         NULL,
857 };
858
859 module_init(mvs_init);
860 module_exit(mvs_exit);
861
862 MODULE_AUTHOR("Jeff Garzik <jgarzik@pobox.com>");
863 MODULE_DESCRIPTION("Marvell 88SE6440 SAS/SATA controller driver");
864 MODULE_VERSION(DRV_VERSION);
865 MODULE_LICENSE("GPL");
866 #ifdef CONFIG_PCI
867 MODULE_DEVICE_TABLE(pci, mvs_pci_table);
868 #endif