2 * Marvell 88SE64xx/88SE94xx pci init
4 * Copyright 2007 Red Hat, Inc.
5 * Copyright 2008 Marvell. <kewei@marvell.com>
6 * Copyright 2009-2011 Marvell. <yuxiangl@marvell.com>
8 * This file is licensed under GPLv2.
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
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.
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
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");
37 int interrupt_coalescing = 0x80;
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, },
53 struct device_attribute *mvst_host_attrs[];
57 static struct scsi_host_template mvs_sht = {
58 .module = THIS_MODULE,
60 .queuecommand = sas_queuecommand,
61 .target_alloc = sas_target_alloc,
62 .slave_configure = mvs_slave_configure,
63 .slave_destroy = sas_slave_destroy,
64 .scan_finished = mvs_scan_finished,
65 .scan_start = mvs_scan_start,
66 .change_queue_depth = sas_change_queue_depth,
67 .change_queue_type = sas_change_queue_type,
68 .bios_param = sas_bios_param,
72 .sg_tablesize = SG_ALL,
73 .max_sectors = SCSI_DEFAULT_MAX_SECTORS,
74 .use_clustering = ENABLE_CLUSTERING,
75 .eh_device_reset_handler = sas_eh_device_reset_handler,
76 .eh_bus_reset_handler = sas_eh_bus_reset_handler,
77 .slave_alloc = mvs_slave_alloc,
78 .target_destroy = sas_target_destroy,
80 .shost_attrs = mvst_host_attrs,
83 static struct sas_domain_function_template mvs_transport_ops = {
84 .lldd_dev_found = mvs_dev_found,
85 .lldd_dev_gone = mvs_dev_gone,
86 .lldd_execute_task = mvs_queue_command,
87 .lldd_control_phy = mvs_phy_control,
89 .lldd_abort_task = mvs_abort_task,
90 .lldd_abort_task_set = mvs_abort_task_set,
91 .lldd_clear_aca = mvs_clear_aca,
92 .lldd_clear_task_set = mvs_clear_task_set,
93 .lldd_I_T_nexus_reset = mvs_I_T_nexus_reset,
94 .lldd_lu_reset = mvs_lu_reset,
95 .lldd_query_task = mvs_query_task,
96 .lldd_port_formed = mvs_port_formed,
97 .lldd_port_deformed = mvs_port_deformed,
101 static void __devinit mvs_phy_init(struct mvs_info *mvi, int phy_id)
103 struct mvs_phy *phy = &mvi->phy[phy_id];
104 struct asd_sas_phy *sas_phy = &phy->sas_phy;
108 init_timer(&phy->timer);
109 sas_phy->enabled = (phy_id < mvi->chip->n_phy) ? 1 : 0;
110 sas_phy->class = SAS;
111 sas_phy->iproto = SAS_PROTOCOL_ALL;
113 sas_phy->type = PHY_TYPE_PHYSICAL;
114 sas_phy->role = PHY_ROLE_INITIATOR;
115 sas_phy->oob_mode = OOB_NOT_CONNECTED;
116 sas_phy->linkrate = SAS_LINK_RATE_UNKNOWN;
118 sas_phy->id = phy_id;
119 sas_phy->sas_addr = &mvi->sas_addr[0];
120 sas_phy->frame_rcvd = &phy->frame_rcvd[0];
121 sas_phy->ha = (struct sas_ha_struct *)mvi->shost->hostdata;
122 sas_phy->lldd_phy = phy;
125 static void mvs_free(struct mvs_info *mvi)
133 if (mvi->flags & MVF_FLAG_SOC)
134 slot_nr = MVS_SOC_SLOTS;
136 slot_nr = MVS_CHIP_SLOT_SZ;
139 pci_pool_destroy(mvi->dma_pool);
142 dma_free_coherent(mvi->dev,
143 sizeof(*mvi->tx) * MVS_CHIP_SLOT_SZ,
144 mvi->tx, mvi->tx_dma);
146 dma_free_coherent(mvi->dev, MVS_RX_FISL_SZ,
147 mvi->rx_fis, mvi->rx_fis_dma);
149 dma_free_coherent(mvi->dev,
150 sizeof(*mvi->rx) * (MVS_RX_RING_SZ + 1),
151 mvi->rx, mvi->rx_dma);
153 dma_free_coherent(mvi->dev,
154 sizeof(*mvi->slot) * slot_nr,
155 mvi->slot, mvi->slot_dma);
157 if (mvi->bulk_buffer)
158 dma_free_coherent(mvi->dev, TRASH_BUCKET_SIZE,
159 mvi->bulk_buffer, mvi->bulk_buffer_dma);
160 if (mvi->bulk_buffer1)
161 dma_free_coherent(mvi->dev, TRASH_BUCKET_SIZE,
162 mvi->bulk_buffer1, mvi->bulk_buffer_dma1);
164 MVS_CHIP_DISP->chip_iounmap(mvi);
166 scsi_host_put(mvi->shost);
167 list_for_each_entry(mwq, &mvi->wq_list, entry)
168 cancel_delayed_work(&mwq->work_q);
173 #ifdef MVS_USE_TASKLET
174 struct tasklet_struct mv_tasklet;
175 static void mvs_tasklet(unsigned long opaque)
181 struct mvs_info *mvi;
182 struct sas_ha_struct *sha = (struct sas_ha_struct *)opaque;
184 core_nr = ((struct mvs_prv_info *)sha->lldd_ha)->n_host;
185 mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[0];
190 for (i = 0; i < core_nr; i++) {
191 mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[i];
192 stat = MVS_CHIP_DISP->isr_status(mvi, mvi->irq);
194 MVS_CHIP_DISP->isr(mvi, mvi->irq, stat);
200 static irqreturn_t mvs_interrupt(int irq, void *opaque)
204 struct mvs_info *mvi;
205 struct sas_ha_struct *sha = opaque;
207 core_nr = ((struct mvs_prv_info *)sha->lldd_ha)->n_host;
208 mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[0];
213 stat = MVS_CHIP_DISP->isr_status(mvi, irq);
217 #ifdef MVS_USE_TASKLET
218 tasklet_schedule(&mv_tasklet);
220 for (i = 0; i < core_nr; i++) {
221 mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[i];
222 MVS_CHIP_DISP->isr(mvi, irq, stat);
228 static int __devinit mvs_alloc(struct mvs_info *mvi, struct Scsi_Host *shost)
233 if (mvi->flags & MVF_FLAG_SOC)
234 slot_nr = MVS_SOC_SLOTS;
236 slot_nr = MVS_CHIP_SLOT_SZ;
238 spin_lock_init(&mvi->lock);
239 for (i = 0; i < mvi->chip->n_phy; i++) {
240 mvs_phy_init(mvi, i);
241 mvi->port[i].wide_port_phymap = 0;
242 mvi->port[i].port_attached = 0;
243 INIT_LIST_HEAD(&mvi->port[i].list);
245 for (i = 0; i < MVS_MAX_DEVICES; i++) {
246 mvi->devices[i].taskfileset = MVS_ID_NOT_MAPPED;
247 mvi->devices[i].dev_type = NO_DEVICE;
248 mvi->devices[i].device_id = i;
249 mvi->devices[i].dev_status = MVS_DEV_NORMAL;
250 init_timer(&mvi->devices[i].timer);
254 * alloc and init our DMA areas
256 mvi->tx = dma_alloc_coherent(mvi->dev,
257 sizeof(*mvi->tx) * MVS_CHIP_SLOT_SZ,
258 &mvi->tx_dma, GFP_KERNEL);
261 memset(mvi->tx, 0, sizeof(*mvi->tx) * MVS_CHIP_SLOT_SZ);
262 mvi->rx_fis = dma_alloc_coherent(mvi->dev, MVS_RX_FISL_SZ,
263 &mvi->rx_fis_dma, GFP_KERNEL);
266 memset(mvi->rx_fis, 0, MVS_RX_FISL_SZ);
268 mvi->rx = dma_alloc_coherent(mvi->dev,
269 sizeof(*mvi->rx) * (MVS_RX_RING_SZ + 1),
270 &mvi->rx_dma, GFP_KERNEL);
273 memset(mvi->rx, 0, sizeof(*mvi->rx) * (MVS_RX_RING_SZ + 1));
274 mvi->rx[0] = cpu_to_le32(0xfff);
275 mvi->rx_cons = 0xfff;
277 mvi->slot = dma_alloc_coherent(mvi->dev,
278 sizeof(*mvi->slot) * slot_nr,
279 &mvi->slot_dma, GFP_KERNEL);
282 memset(mvi->slot, 0, sizeof(*mvi->slot) * slot_nr);
284 mvi->bulk_buffer = dma_alloc_coherent(mvi->dev,
286 &mvi->bulk_buffer_dma, GFP_KERNEL);
287 if (!mvi->bulk_buffer)
290 mvi->bulk_buffer1 = dma_alloc_coherent(mvi->dev,
292 &mvi->bulk_buffer_dma1, GFP_KERNEL);
293 if (!mvi->bulk_buffer1)
296 sprintf(pool_name, "%s%d", "mvs_dma_pool", mvi->id);
297 mvi->dma_pool = pci_pool_create(pool_name, mvi->pdev, MVS_SLOT_BUF_SZ, 16, 0);
298 if (!mvi->dma_pool) {
299 printk(KERN_DEBUG "failed to create dma pool %s.\n", pool_name);
302 mvi->tags_num = slot_nr;
304 /* Initialize tags */
312 int mvs_ioremap(struct mvs_info *mvi, int bar, int bar_ex)
314 unsigned long res_start, res_len, res_flag, res_flag_ex = 0;
315 struct pci_dev *pdev = mvi->pdev;
318 * ioremap main and peripheral registers
320 res_start = pci_resource_start(pdev, bar_ex);
321 res_len = pci_resource_len(pdev, bar_ex);
322 if (!res_start || !res_len)
325 res_flag_ex = pci_resource_flags(pdev, bar_ex);
326 if (res_flag_ex & IORESOURCE_MEM) {
327 if (res_flag_ex & IORESOURCE_CACHEABLE)
328 mvi->regs_ex = ioremap(res_start, res_len);
330 mvi->regs_ex = ioremap_nocache(res_start,
333 mvi->regs_ex = (void *)res_start;
338 res_start = pci_resource_start(pdev, bar);
339 res_len = pci_resource_len(pdev, bar);
340 if (!res_start || !res_len)
343 res_flag = pci_resource_flags(pdev, bar);
344 if (res_flag & IORESOURCE_CACHEABLE)
345 mvi->regs = ioremap(res_start, res_len);
347 mvi->regs = ioremap_nocache(res_start, res_len);
350 if (mvi->regs_ex && (res_flag_ex & IORESOURCE_MEM))
351 iounmap(mvi->regs_ex);
361 void mvs_iounmap(void __iomem *regs)
366 static struct mvs_info *__devinit mvs_pci_alloc(struct pci_dev *pdev,
367 const struct pci_device_id *ent,
368 struct Scsi_Host *shost, unsigned int id)
370 struct mvs_info *mvi = NULL;
371 struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
373 mvi = kzalloc(sizeof(*mvi) +
374 (1L << mvs_chips[ent->driver_data].slot_width) *
375 sizeof(struct mvs_slot_info), GFP_KERNEL);
380 mvi->dev = &pdev->dev;
381 mvi->chip_id = ent->driver_data;
382 mvi->chip = &mvs_chips[mvi->chip_id];
383 INIT_LIST_HEAD(&mvi->wq_list);
385 ((struct mvs_prv_info *)sha->lldd_ha)->mvi[id] = mvi;
386 ((struct mvs_prv_info *)sha->lldd_ha)->n_phy = mvi->chip->n_phy;
391 #ifdef MVS_USE_TASKLET
392 tasklet_init(&mv_tasklet, mvs_tasklet, (unsigned long)sha);
395 mvi->tags = kzalloc(MVS_CHIP_SLOT_SZ>>3, GFP_KERNEL);
399 if (MVS_CHIP_DISP->chip_ioremap(mvi))
401 if (!mvs_alloc(mvi, shost))
408 /* move to PCI layer or libata core? */
409 static int pci_go_64(struct pci_dev *pdev)
413 if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
414 rc = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
416 rc = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
418 dev_printk(KERN_ERR, &pdev->dev,
419 "64-bit DMA enable failed\n");
424 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
426 dev_printk(KERN_ERR, &pdev->dev,
427 "32-bit DMA enable failed\n");
430 rc = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
432 dev_printk(KERN_ERR, &pdev->dev,
433 "32-bit consistent DMA enable failed\n");
441 static int __devinit mvs_prep_sas_ha_init(struct Scsi_Host *shost,
442 const struct mvs_chip_info *chip_info)
444 int phy_nr, port_nr; unsigned short core_nr;
445 struct asd_sas_phy **arr_phy;
446 struct asd_sas_port **arr_port;
447 struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
449 core_nr = chip_info->n_host;
450 phy_nr = core_nr * chip_info->n_phy;
453 memset(sha, 0x00, sizeof(struct sas_ha_struct));
454 arr_phy = kcalloc(phy_nr, sizeof(void *), GFP_KERNEL);
455 arr_port = kcalloc(port_nr, sizeof(void *), GFP_KERNEL);
456 if (!arr_phy || !arr_port)
459 sha->sas_phy = arr_phy;
460 sha->sas_port = arr_port;
461 sha->core.shost = shost;
463 sha->lldd_ha = kzalloc(sizeof(struct mvs_prv_info), GFP_KERNEL);
467 ((struct mvs_prv_info *)sha->lldd_ha)->n_host = core_nr;
469 shost->transportt = mvs_stt;
470 shost->max_id = MVS_MAX_DEVICES;
472 shost->max_channel = 1;
473 shost->max_cmd_len = 16;
483 static void __devinit mvs_post_sas_ha_init(struct Scsi_Host *shost,
484 const struct mvs_chip_info *chip_info)
486 int can_queue, i = 0, j = 0;
487 struct mvs_info *mvi = NULL;
488 struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
489 unsigned short nr_core = ((struct mvs_prv_info *)sha->lldd_ha)->n_host;
491 for (j = 0; j < nr_core; j++) {
492 mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[j];
493 for (i = 0; i < chip_info->n_phy; i++) {
494 sha->sas_phy[j * chip_info->n_phy + i] =
495 &mvi->phy[i].sas_phy;
496 sha->sas_port[j * chip_info->n_phy + i] =
497 &mvi->port[i].sas_port;
501 sha->sas_ha_name = DRV_NAME;
503 sha->lldd_module = THIS_MODULE;
504 sha->sas_addr = &mvi->sas_addr[0];
506 sha->num_phys = nr_core * chip_info->n_phy;
508 sha->lldd_max_execute_num = lldd_max_execute_num;
510 if (mvi->flags & MVF_FLAG_SOC)
511 can_queue = MVS_SOC_CAN_QUEUE;
513 can_queue = MVS_CHIP_SLOT_SZ;
515 sha->lldd_queue_size = can_queue;
516 shost->sg_tablesize = min_t(u16, SG_ALL, MVS_MAX_SG);
517 shost->can_queue = can_queue;
518 mvi->shost->cmd_per_lun = MVS_QUEUE_SIZE;
519 sha->core.shost = mvi->shost;
522 static void mvs_init_sas_add(struct mvs_info *mvi)
525 for (i = 0; i < mvi->chip->n_phy; i++) {
526 mvi->phy[i].dev_sas_addr = 0x5005043011ab0000ULL;
527 mvi->phy[i].dev_sas_addr =
528 cpu_to_be64((u64)(*(u64 *)&mvi->phy[i].dev_sas_addr));
531 memcpy(mvi->sas_addr, &mvi->phy[0].dev_sas_addr, SAS_ADDR_SIZE);
534 static int __devinit mvs_pci_init(struct pci_dev *pdev,
535 const struct pci_device_id *ent)
537 unsigned int rc, nhost = 0;
538 struct mvs_info *mvi;
539 irq_handler_t irq_handler = mvs_interrupt;
540 struct Scsi_Host *shost = NULL;
541 const struct mvs_chip_info *chip;
543 dev_printk(KERN_INFO, &pdev->dev,
544 "mvsas: driver version %s\n", DRV_VERSION);
545 rc = pci_enable_device(pdev);
549 pci_set_master(pdev);
551 rc = pci_request_regions(pdev, DRV_NAME);
553 goto err_out_disable;
555 rc = pci_go_64(pdev);
557 goto err_out_regions;
559 shost = scsi_host_alloc(&mvs_sht, sizeof(void *));
562 goto err_out_regions;
565 chip = &mvs_chips[ent->driver_data];
566 SHOST_TO_SAS_HA(shost) =
567 kcalloc(1, sizeof(struct sas_ha_struct), GFP_KERNEL);
568 if (!SHOST_TO_SAS_HA(shost)) {
571 goto err_out_regions;
574 rc = mvs_prep_sas_ha_init(shost, chip);
578 goto err_out_regions;
581 pci_set_drvdata(pdev, SHOST_TO_SAS_HA(shost));
584 mvi = mvs_pci_alloc(pdev, ent, shost, nhost);
587 goto err_out_regions;
590 memset(&mvi->hba_info_param, 0xFF,
591 sizeof(struct hba_info_page));
593 mvs_init_sas_add(mvi);
595 mvi->instance = nhost;
596 rc = MVS_CHIP_DISP->chip_init(mvi);
599 goto err_out_regions;
602 } while (nhost < chip->n_host);
603 #ifdef MVS_USE_TASKLET
604 tasklet_init(&mv_tasklet, mvs_tasklet,
605 (unsigned long)SHOST_TO_SAS_HA(shost));
608 mvs_post_sas_ha_init(shost, chip);
610 rc = scsi_add_host(shost, &pdev->dev);
614 rc = sas_register_ha(SHOST_TO_SAS_HA(shost));
617 rc = request_irq(pdev->irq, irq_handler, IRQF_SHARED,
618 DRV_NAME, SHOST_TO_SAS_HA(shost));
622 MVS_CHIP_DISP->interrupt_enable(mvi);
624 scsi_scan_host(mvi->shost);
629 sas_unregister_ha(SHOST_TO_SAS_HA(shost));
631 scsi_remove_host(mvi->shost);
633 pci_release_regions(pdev);
635 pci_disable_device(pdev);
640 static void __devexit mvs_pci_remove(struct pci_dev *pdev)
642 unsigned short core_nr, i = 0;
643 struct sas_ha_struct *sha = pci_get_drvdata(pdev);
644 struct mvs_info *mvi = NULL;
646 core_nr = ((struct mvs_prv_info *)sha->lldd_ha)->n_host;
647 mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[0];
649 #ifdef MVS_USE_TASKLET
650 tasklet_kill(&mv_tasklet);
653 pci_set_drvdata(pdev, NULL);
654 sas_unregister_ha(sha);
655 sas_remove_host(mvi->shost);
656 scsi_remove_host(mvi->shost);
658 MVS_CHIP_DISP->interrupt_disable(mvi);
659 free_irq(mvi->pdev->irq, sha);
660 for (i = 0; i < core_nr; i++) {
661 mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[i];
665 kfree(sha->sas_port);
667 pci_release_regions(pdev);
668 pci_disable_device(pdev);
672 static struct pci_device_id __devinitdata mvs_pci_table[] = {
673 { PCI_VDEVICE(MARVELL, 0x6320), chip_6320 },
674 { PCI_VDEVICE(MARVELL, 0x6340), chip_6440 },
676 .vendor = PCI_VENDOR_ID_MARVELL,
678 .subvendor = PCI_ANY_ID,
682 .driver_data = chip_6485,
684 { PCI_VDEVICE(MARVELL, 0x6440), chip_6440 },
685 { PCI_VDEVICE(MARVELL, 0x6485), chip_6485 },
686 { PCI_VDEVICE(MARVELL, 0x9480), chip_9480 },
687 { PCI_VDEVICE(MARVELL, 0x9180), chip_9180 },
688 { PCI_VDEVICE(ARECA, PCI_DEVICE_ID_ARECA_1300), chip_1300 },
689 { PCI_VDEVICE(ARECA, PCI_DEVICE_ID_ARECA_1320), chip_1320 },
690 { PCI_VDEVICE(ADAPTEC2, 0x0450), chip_6440 },
691 { PCI_VDEVICE(TTI, 0x2710), chip_9480 },
692 { PCI_VDEVICE(TTI, 0x2720), chip_9480 },
693 { PCI_VDEVICE(TTI, 0x2721), chip_9480 },
694 { PCI_VDEVICE(TTI, 0x2722), chip_9480 },
695 { PCI_VDEVICE(TTI, 0x2740), chip_9480 },
696 { PCI_VDEVICE(TTI, 0x2744), chip_9480 },
697 { PCI_VDEVICE(TTI, 0x2760), chip_9480 },
701 .subvendor = PCI_ANY_ID,
705 .driver_data = chip_9445,
710 .subvendor = PCI_ANY_ID,
714 .driver_data = chip_9485,
717 { } /* terminate list */
720 static struct pci_driver mvs_pci_driver = {
722 .id_table = mvs_pci_table,
723 .probe = mvs_pci_init,
724 .remove = __devexit_p(mvs_pci_remove),
728 mvs_show_driver_version(struct device *cdev,
729 struct device_attribute *attr, char *buffer)
731 return snprintf(buffer, PAGE_SIZE, "%s\n", DRV_VERSION);
734 static DEVICE_ATTR(driver_version,
736 mvs_show_driver_version,
740 mvs_store_interrupt_coalescing(struct device *cdev,
741 struct device_attribute *attr,
742 const char *buffer, size_t size)
745 struct mvs_info *mvi = NULL;
746 struct Scsi_Host *shost = class_to_shost(cdev);
747 struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
752 if (sscanf(buffer, "%d", &val) != 1)
755 if (val >= 0x10000) {
756 mv_dprintk("interrupt coalescing timer %d us is"
758 return strlen(buffer);
761 interrupt_coalescing = val;
763 core_nr = ((struct mvs_prv_info *)sha->lldd_ha)->n_host;
764 mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[0];
769 for (i = 0; i < core_nr; i++) {
770 mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[i];
771 if (MVS_CHIP_DISP->tune_interrupt)
772 MVS_CHIP_DISP->tune_interrupt(mvi,
773 interrupt_coalescing);
775 mv_dprintk("set interrupt coalescing time to %d us\n",
776 interrupt_coalescing);
777 return strlen(buffer);
780 static ssize_t mvs_show_interrupt_coalescing(struct device *cdev,
781 struct device_attribute *attr, char *buffer)
783 return snprintf(buffer, PAGE_SIZE, "%d\n", interrupt_coalescing);
786 static DEVICE_ATTR(interrupt_coalescing,
788 mvs_show_interrupt_coalescing,
789 mvs_store_interrupt_coalescing);
792 struct task_struct *mvs_th;
793 static int __init mvs_init(void)
796 mvs_stt = sas_domain_attach_transport(&mvs_transport_ops);
800 mvs_task_list_cache = kmem_cache_create("mvs_task_list", sizeof(struct mvs_task_list),
801 0, SLAB_HWCACHE_ALIGN, NULL);
802 if (!mvs_task_list_cache) {
804 mv_printk("%s: mvs_task_list_cache alloc failed! \n", __func__);
808 rc = pci_register_driver(&mvs_pci_driver);
816 sas_release_transport(mvs_stt);
820 static void __exit mvs_exit(void)
822 pci_unregister_driver(&mvs_pci_driver);
823 sas_release_transport(mvs_stt);
824 kmem_cache_destroy(mvs_task_list_cache);
827 struct device_attribute *mvst_host_attrs[] = {
828 &dev_attr_driver_version,
829 &dev_attr_interrupt_coalescing,
833 module_init(mvs_init);
834 module_exit(mvs_exit);
836 MODULE_AUTHOR("Jeff Garzik <jgarzik@pobox.com>");
837 MODULE_DESCRIPTION("Marvell 88SE6440 SAS/SATA controller driver");
838 MODULE_VERSION(DRV_VERSION);
839 MODULE_LICENSE("GPL");
841 MODULE_DEVICE_TABLE(pci, mvs_pci_table);