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1 /*
2  * PMC-Sierra PM8001/8081/8088/8089 SAS/SATA based host adapters driver
3  *
4  * Copyright (c) 2008-2009 USI Co., Ltd.
5  * All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions, and the following disclaimer,
12  *    without modification.
13  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
14  *    substantially similar to the "NO WARRANTY" disclaimer below
15  *    ("Disclaimer") and any redistribution must be conditioned upon
16  *    including a substantially similar Disclaimer requirement for further
17  *    binary redistribution.
18  * 3. Neither the names of the above-listed copyright holders nor the names
19  *    of any contributors may be used to endorse or promote products derived
20  *    from this software without specific prior written permission.
21  *
22  * Alternatively, this software may be distributed under the terms of the
23  * GNU General Public License ("GPL") version 2 as published by the Free
24  * Software Foundation.
25  *
26  * NO WARRANTY
27  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
28  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
29  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
30  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
31  * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
32  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
33  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
34  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
35  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
36  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
37  * POSSIBILITY OF SUCH DAMAGES.
38  *
39  */
40
41 #include <linux/slab.h>
42 #include "pm8001_sas.h"
43 #include "pm8001_chips.h"
44
45 static struct scsi_transport_template *pm8001_stt;
46
47 /**
48  * chip info structure to identify chip key functionality as
49  * encryption available/not, no of ports, hw specific function ref
50  */
51 static const struct pm8001_chip_info pm8001_chips[] = {
52         [chip_8001] = {0,  8, &pm8001_8001_dispatch,},
53         [chip_8008] = {0,  8, &pm8001_80xx_dispatch,},
54         [chip_8009] = {1,  8, &pm8001_80xx_dispatch,},
55         [chip_8018] = {0,  16, &pm8001_80xx_dispatch,},
56         [chip_8019] = {1,  16, &pm8001_80xx_dispatch,},
57 };
58 static int pm8001_id;
59
60 LIST_HEAD(hba_list);
61
62 struct workqueue_struct *pm8001_wq;
63
64 /**
65  * The main structure which LLDD must register for scsi core.
66  */
67 static struct scsi_host_template pm8001_sht = {
68         .module                 = THIS_MODULE,
69         .name                   = DRV_NAME,
70         .queuecommand           = sas_queuecommand,
71         .target_alloc           = sas_target_alloc,
72         .slave_configure        = sas_slave_configure,
73         .scan_finished          = pm8001_scan_finished,
74         .scan_start             = pm8001_scan_start,
75         .change_queue_depth     = sas_change_queue_depth,
76         .change_queue_type      = sas_change_queue_type,
77         .bios_param             = sas_bios_param,
78         .can_queue              = 1,
79         .cmd_per_lun            = 1,
80         .this_id                = -1,
81         .sg_tablesize           = SG_ALL,
82         .max_sectors            = SCSI_DEFAULT_MAX_SECTORS,
83         .use_clustering         = ENABLE_CLUSTERING,
84         .eh_device_reset_handler = sas_eh_device_reset_handler,
85         .eh_bus_reset_handler   = sas_eh_bus_reset_handler,
86         .target_destroy         = sas_target_destroy,
87         .ioctl                  = sas_ioctl,
88         .shost_attrs            = pm8001_host_attrs,
89 };
90
91 /**
92  * Sas layer call this function to execute specific task.
93  */
94 static struct sas_domain_function_template pm8001_transport_ops = {
95         .lldd_dev_found         = pm8001_dev_found,
96         .lldd_dev_gone          = pm8001_dev_gone,
97
98         .lldd_execute_task      = pm8001_queue_command,
99         .lldd_control_phy       = pm8001_phy_control,
100
101         .lldd_abort_task        = pm8001_abort_task,
102         .lldd_abort_task_set    = pm8001_abort_task_set,
103         .lldd_clear_aca         = pm8001_clear_aca,
104         .lldd_clear_task_set    = pm8001_clear_task_set,
105         .lldd_I_T_nexus_reset   = pm8001_I_T_nexus_reset,
106         .lldd_lu_reset          = pm8001_lu_reset,
107         .lldd_query_task        = pm8001_query_task,
108 };
109
110 /**
111  *pm8001_phy_init - initiate our adapter phys
112  *@pm8001_ha: our hba structure.
113  *@phy_id: phy id.
114  */
115 static void pm8001_phy_init(struct pm8001_hba_info *pm8001_ha, int phy_id)
116 {
117         struct pm8001_phy *phy = &pm8001_ha->phy[phy_id];
118         struct asd_sas_phy *sas_phy = &phy->sas_phy;
119         phy->phy_state = 0;
120         phy->pm8001_ha = pm8001_ha;
121         sas_phy->enabled = (phy_id < pm8001_ha->chip->n_phy) ? 1 : 0;
122         sas_phy->class = SAS;
123         sas_phy->iproto = SAS_PROTOCOL_ALL;
124         sas_phy->tproto = 0;
125         sas_phy->type = PHY_TYPE_PHYSICAL;
126         sas_phy->role = PHY_ROLE_INITIATOR;
127         sas_phy->oob_mode = OOB_NOT_CONNECTED;
128         sas_phy->linkrate = SAS_LINK_RATE_UNKNOWN;
129         sas_phy->id = phy_id;
130         sas_phy->sas_addr = &pm8001_ha->sas_addr[0];
131         sas_phy->frame_rcvd = &phy->frame_rcvd[0];
132         sas_phy->ha = (struct sas_ha_struct *)pm8001_ha->shost->hostdata;
133         sas_phy->lldd_phy = phy;
134 }
135
136 /**
137  *pm8001_free - free hba
138  *@pm8001_ha:   our hba structure.
139  *
140  */
141 static void pm8001_free(struct pm8001_hba_info *pm8001_ha)
142 {
143         int i;
144
145         if (!pm8001_ha)
146                 return;
147
148         for (i = 0; i < USI_MAX_MEMCNT; i++) {
149                 if (pm8001_ha->memoryMap.region[i].virt_ptr != NULL) {
150                         pci_free_consistent(pm8001_ha->pdev,
151                                 (pm8001_ha->memoryMap.region[i].total_len +
152                                 pm8001_ha->memoryMap.region[i].alignment),
153                                 pm8001_ha->memoryMap.region[i].virt_ptr,
154                                 pm8001_ha->memoryMap.region[i].phys_addr);
155                         }
156         }
157         PM8001_CHIP_DISP->chip_iounmap(pm8001_ha);
158         if (pm8001_ha->shost)
159                 scsi_host_put(pm8001_ha->shost);
160         flush_workqueue(pm8001_wq);
161         kfree(pm8001_ha->tags);
162         kfree(pm8001_ha);
163 }
164
165 #ifdef PM8001_USE_TASKLET
166
167 /**
168  * tasklet for 64 msi-x interrupt handler
169  * @opaque: the passed general host adapter struct
170  * Note: pm8001_tasklet is common for pm8001 & pm80xx
171  */
172 static void pm8001_tasklet(unsigned long opaque)
173 {
174         struct pm8001_hba_info *pm8001_ha;
175         u32 vec;
176         pm8001_ha = (struct pm8001_hba_info *)opaque;
177         if (unlikely(!pm8001_ha))
178                 BUG_ON(1);
179         vec = pm8001_ha->int_vector;
180         PM8001_CHIP_DISP->isr(pm8001_ha, vec);
181 }
182 #endif
183
184 static struct  pm8001_hba_info *outq_to_hba(u8 *outq)
185 {
186         return container_of((outq - *outq), struct pm8001_hba_info, outq[0]);
187 }
188
189 /**
190  * pm8001_interrupt_handler_msix - main MSIX interrupt handler.
191  * It obtains the vector number and calls the equivalent bottom
192  * half or services directly.
193  * @opaque: the passed outbound queue/vector. Host structure is
194  * retrieved from the same.
195  */
196 static irqreturn_t pm8001_interrupt_handler_msix(int irq, void *opaque)
197 {
198         struct pm8001_hba_info *pm8001_ha = outq_to_hba(opaque);
199         u8 outq = *(u8 *)opaque;
200         irqreturn_t ret = IRQ_HANDLED;
201         if (unlikely(!pm8001_ha))
202                 return IRQ_NONE;
203         if (!PM8001_CHIP_DISP->is_our_interupt(pm8001_ha))
204                 return IRQ_NONE;
205         pm8001_ha->int_vector = outq;
206 #ifdef PM8001_USE_TASKLET
207         tasklet_schedule(&pm8001_ha->tasklet);
208 #else
209         ret = PM8001_CHIP_DISP->isr(pm8001_ha, outq);
210 #endif
211         return ret;
212 }
213
214 /**
215  * pm8001_interrupt_handler_intx - main INTx interrupt handler.
216  * @dev_id: sas_ha structure. The HBA is retrieved from sas_has structure.
217  */
218
219 static irqreturn_t pm8001_interrupt_handler_intx(int irq, void *dev_id)
220 {
221         struct pm8001_hba_info *pm8001_ha;
222         irqreturn_t ret = IRQ_HANDLED;
223         struct sas_ha_struct *sha = dev_id;
224         pm8001_ha = sha->lldd_ha;
225         if (unlikely(!pm8001_ha))
226                 return IRQ_NONE;
227         if (!PM8001_CHIP_DISP->is_our_interupt(pm8001_ha))
228                 return IRQ_NONE;
229
230         pm8001_ha->int_vector = 0;
231 #ifdef PM8001_USE_TASKLET
232         tasklet_schedule(&pm8001_ha->tasklet);
233 #else
234         ret = PM8001_CHIP_DISP->isr(pm8001_ha, 0);
235 #endif
236         return ret;
237 }
238
239 /**
240  * pm8001_alloc - initiate our hba structure and 6 DMAs area.
241  * @pm8001_ha:our hba structure.
242  *
243  */
244 static int pm8001_alloc(struct pm8001_hba_info *pm8001_ha,
245                         const struct pci_device_id *ent)
246 {
247         int i;
248         spin_lock_init(&pm8001_ha->lock);
249         PM8001_INIT_DBG(pm8001_ha,
250                 pm8001_printk("pm8001_alloc: PHY:%x\n",
251                                 pm8001_ha->chip->n_phy));
252         for (i = 0; i < pm8001_ha->chip->n_phy; i++) {
253                 pm8001_phy_init(pm8001_ha, i);
254                 pm8001_ha->port[i].wide_port_phymap = 0;
255                 pm8001_ha->port[i].port_attached = 0;
256                 pm8001_ha->port[i].port_state = 0;
257                 INIT_LIST_HEAD(&pm8001_ha->port[i].list);
258         }
259
260         pm8001_ha->tags = kzalloc(PM8001_MAX_CCB, GFP_KERNEL);
261         if (!pm8001_ha->tags)
262                 goto err_out;
263         /* MPI Memory region 1 for AAP Event Log for fw */
264         pm8001_ha->memoryMap.region[AAP1].num_elements = 1;
265         pm8001_ha->memoryMap.region[AAP1].element_size = PM8001_EVENT_LOG_SIZE;
266         pm8001_ha->memoryMap.region[AAP1].total_len = PM8001_EVENT_LOG_SIZE;
267         pm8001_ha->memoryMap.region[AAP1].alignment = 32;
268
269         /* MPI Memory region 2 for IOP Event Log for fw */
270         pm8001_ha->memoryMap.region[IOP].num_elements = 1;
271         pm8001_ha->memoryMap.region[IOP].element_size = PM8001_EVENT_LOG_SIZE;
272         pm8001_ha->memoryMap.region[IOP].total_len = PM8001_EVENT_LOG_SIZE;
273         pm8001_ha->memoryMap.region[IOP].alignment = 32;
274
275         for (i = 0; i < PM8001_MAX_SPCV_INB_NUM; i++) {
276                 /* MPI Memory region 3 for consumer Index of inbound queues */
277                 pm8001_ha->memoryMap.region[CI+i].num_elements = 1;
278                 pm8001_ha->memoryMap.region[CI+i].element_size = 4;
279                 pm8001_ha->memoryMap.region[CI+i].total_len = 4;
280                 pm8001_ha->memoryMap.region[CI+i].alignment = 4;
281
282                 if ((ent->driver_data) != chip_8001) {
283                         /* MPI Memory region 5 inbound queues */
284                         pm8001_ha->memoryMap.region[IB+i].num_elements =
285                                                 PM8001_MPI_QUEUE;
286                         pm8001_ha->memoryMap.region[IB+i].element_size = 128;
287                         pm8001_ha->memoryMap.region[IB+i].total_len =
288                                                 PM8001_MPI_QUEUE * 128;
289                         pm8001_ha->memoryMap.region[IB+i].alignment = 128;
290                 } else {
291                         pm8001_ha->memoryMap.region[IB+i].num_elements =
292                                                 PM8001_MPI_QUEUE;
293                         pm8001_ha->memoryMap.region[IB+i].element_size = 64;
294                         pm8001_ha->memoryMap.region[IB+i].total_len =
295                                                 PM8001_MPI_QUEUE * 64;
296                         pm8001_ha->memoryMap.region[IB+i].alignment = 64;
297                 }
298         }
299
300         for (i = 0; i < PM8001_MAX_SPCV_OUTB_NUM; i++) {
301                 /* MPI Memory region 4 for producer Index of outbound queues */
302                 pm8001_ha->memoryMap.region[PI+i].num_elements = 1;
303                 pm8001_ha->memoryMap.region[PI+i].element_size = 4;
304                 pm8001_ha->memoryMap.region[PI+i].total_len = 4;
305                 pm8001_ha->memoryMap.region[PI+i].alignment = 4;
306
307                 if (ent->driver_data != chip_8001) {
308                         /* MPI Memory region 6 Outbound queues */
309                         pm8001_ha->memoryMap.region[OB+i].num_elements =
310                                                 PM8001_MPI_QUEUE;
311                         pm8001_ha->memoryMap.region[OB+i].element_size = 128;
312                         pm8001_ha->memoryMap.region[OB+i].total_len =
313                                                 PM8001_MPI_QUEUE * 128;
314                         pm8001_ha->memoryMap.region[OB+i].alignment = 128;
315                 } else {
316                         /* MPI Memory region 6 Outbound queues */
317                         pm8001_ha->memoryMap.region[OB+i].num_elements =
318                                                 PM8001_MPI_QUEUE;
319                         pm8001_ha->memoryMap.region[OB+i].element_size = 64;
320                         pm8001_ha->memoryMap.region[OB+i].total_len =
321                                                 PM8001_MPI_QUEUE * 64;
322                         pm8001_ha->memoryMap.region[OB+i].alignment = 64;
323                 }
324
325         }
326         /* Memory region write DMA*/
327         pm8001_ha->memoryMap.region[NVMD].num_elements = 1;
328         pm8001_ha->memoryMap.region[NVMD].element_size = 4096;
329         pm8001_ha->memoryMap.region[NVMD].total_len = 4096;
330         /* Memory region for devices*/
331         pm8001_ha->memoryMap.region[DEV_MEM].num_elements = 1;
332         pm8001_ha->memoryMap.region[DEV_MEM].element_size = PM8001_MAX_DEVICES *
333                 sizeof(struct pm8001_device);
334         pm8001_ha->memoryMap.region[DEV_MEM].total_len = PM8001_MAX_DEVICES *
335                 sizeof(struct pm8001_device);
336
337         /* Memory region for ccb_info*/
338         pm8001_ha->memoryMap.region[CCB_MEM].num_elements = 1;
339         pm8001_ha->memoryMap.region[CCB_MEM].element_size = PM8001_MAX_CCB *
340                 sizeof(struct pm8001_ccb_info);
341         pm8001_ha->memoryMap.region[CCB_MEM].total_len = PM8001_MAX_CCB *
342                 sizeof(struct pm8001_ccb_info);
343
344         /* Memory region for fw flash */
345         pm8001_ha->memoryMap.region[FW_FLASH].total_len = 4096;
346
347         for (i = 0; i < USI_MAX_MEMCNT; i++) {
348                 if (pm8001_mem_alloc(pm8001_ha->pdev,
349                         &pm8001_ha->memoryMap.region[i].virt_ptr,
350                         &pm8001_ha->memoryMap.region[i].phys_addr,
351                         &pm8001_ha->memoryMap.region[i].phys_addr_hi,
352                         &pm8001_ha->memoryMap.region[i].phys_addr_lo,
353                         pm8001_ha->memoryMap.region[i].total_len,
354                         pm8001_ha->memoryMap.region[i].alignment) != 0) {
355                                 PM8001_FAIL_DBG(pm8001_ha,
356                                         pm8001_printk("Mem%d alloc failed\n",
357                                         i));
358                                 goto err_out;
359                 }
360         }
361
362         pm8001_ha->devices = pm8001_ha->memoryMap.region[DEV_MEM].virt_ptr;
363         for (i = 0; i < PM8001_MAX_DEVICES; i++) {
364                 pm8001_ha->devices[i].dev_type = SAS_PHY_UNUSED;
365                 pm8001_ha->devices[i].id = i;
366                 pm8001_ha->devices[i].device_id = PM8001_MAX_DEVICES;
367                 pm8001_ha->devices[i].running_req = 0;
368         }
369         pm8001_ha->ccb_info = pm8001_ha->memoryMap.region[CCB_MEM].virt_ptr;
370         for (i = 0; i < PM8001_MAX_CCB; i++) {
371                 pm8001_ha->ccb_info[i].ccb_dma_handle =
372                         pm8001_ha->memoryMap.region[CCB_MEM].phys_addr +
373                         i * sizeof(struct pm8001_ccb_info);
374                 pm8001_ha->ccb_info[i].task = NULL;
375                 pm8001_ha->ccb_info[i].ccb_tag = 0xffffffff;
376                 pm8001_ha->ccb_info[i].device = NULL;
377                 ++pm8001_ha->tags_num;
378         }
379         pm8001_ha->flags = PM8001F_INIT_TIME;
380         /* Initialize tags */
381         pm8001_tag_init(pm8001_ha);
382         return 0;
383 err_out:
384         return 1;
385 }
386
387 /**
388  * pm8001_ioremap - remap the pci high physical address to kernal virtual
389  * address so that we can access them.
390  * @pm8001_ha:our hba structure.
391  */
392 static int pm8001_ioremap(struct pm8001_hba_info *pm8001_ha)
393 {
394         u32 bar;
395         u32 logicalBar = 0;
396         struct pci_dev *pdev;
397
398         pdev = pm8001_ha->pdev;
399         /* map pci mem (PMC pci base 0-3)*/
400         for (bar = 0; bar < 6; bar++) {
401                 /*
402                 ** logical BARs for SPC:
403                 ** bar 0 and 1 - logical BAR0
404                 ** bar 2 and 3 - logical BAR1
405                 ** bar4 - logical BAR2
406                 ** bar5 - logical BAR3
407                 ** Skip the appropriate assignments:
408                 */
409                 if ((bar == 1) || (bar == 3))
410                         continue;
411                 if (pci_resource_flags(pdev, bar) & IORESOURCE_MEM) {
412                         pm8001_ha->io_mem[logicalBar].membase =
413                                 pci_resource_start(pdev, bar);
414                         pm8001_ha->io_mem[logicalBar].membase &=
415                                 (u32)PCI_BASE_ADDRESS_MEM_MASK;
416                         pm8001_ha->io_mem[logicalBar].memsize =
417                                 pci_resource_len(pdev, bar);
418                         pm8001_ha->io_mem[logicalBar].memvirtaddr =
419                                 ioremap(pm8001_ha->io_mem[logicalBar].membase,
420                                 pm8001_ha->io_mem[logicalBar].memsize);
421                         PM8001_INIT_DBG(pm8001_ha,
422                                 pm8001_printk("PCI: bar %d, logicalBar %d ",
423                                 bar, logicalBar));
424                         PM8001_INIT_DBG(pm8001_ha, pm8001_printk(
425                                 "base addr %llx virt_addr=%llx len=%d\n",
426                                 (u64)pm8001_ha->io_mem[logicalBar].membase,
427                                 (u64)(unsigned long)
428                                 pm8001_ha->io_mem[logicalBar].memvirtaddr,
429                                 pm8001_ha->io_mem[logicalBar].memsize));
430                 } else {
431                         pm8001_ha->io_mem[logicalBar].membase   = 0;
432                         pm8001_ha->io_mem[logicalBar].memsize   = 0;
433                         pm8001_ha->io_mem[logicalBar].memvirtaddr = 0;
434                 }
435                 logicalBar++;
436         }
437         return 0;
438 }
439
440 /**
441  * pm8001_pci_alloc - initialize our ha card structure
442  * @pdev: pci device.
443  * @ent: ent
444  * @shost: scsi host struct which has been initialized before.
445  */
446 static struct pm8001_hba_info *pm8001_pci_alloc(struct pci_dev *pdev,
447                                  const struct pci_device_id *ent,
448                                 struct Scsi_Host *shost)
449
450 {
451         struct pm8001_hba_info *pm8001_ha;
452         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
453
454
455         pm8001_ha = sha->lldd_ha;
456         if (!pm8001_ha)
457                 return NULL;
458
459         pm8001_ha->pdev = pdev;
460         pm8001_ha->dev = &pdev->dev;
461         pm8001_ha->chip_id = ent->driver_data;
462         pm8001_ha->chip = &pm8001_chips[pm8001_ha->chip_id];
463         pm8001_ha->irq = pdev->irq;
464         pm8001_ha->sas = sha;
465         pm8001_ha->shost = shost;
466         pm8001_ha->id = pm8001_id++;
467         pm8001_ha->logging_level = 0x01;
468         sprintf(pm8001_ha->name, "%s%d", DRV_NAME, pm8001_ha->id);
469         /* IOMB size is 128 for 8088/89 controllers */
470         if (pm8001_ha->chip_id != chip_8001)
471                 pm8001_ha->iomb_size = IOMB_SIZE_SPCV;
472         else
473                 pm8001_ha->iomb_size = IOMB_SIZE_SPC;
474
475 #ifdef PM8001_USE_TASKLET
476         /**
477         * default tasklet for non msi-x interrupt handler/first msi-x
478         * interrupt handler
479         **/
480         tasklet_init(&pm8001_ha->tasklet, pm8001_tasklet,
481                         (unsigned long)pm8001_ha);
482 #endif
483         pm8001_ioremap(pm8001_ha);
484         if (!pm8001_alloc(pm8001_ha, ent))
485                 return pm8001_ha;
486         pm8001_free(pm8001_ha);
487         return NULL;
488 }
489
490 /**
491  * pci_go_44 - pm8001 specified, its DMA is 44 bit rather than 64 bit
492  * @pdev: pci device.
493  */
494 static int pci_go_44(struct pci_dev *pdev)
495 {
496         int rc;
497
498         if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(44))) {
499                 rc = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(44));
500                 if (rc) {
501                         rc = pci_set_consistent_dma_mask(pdev,
502                                 DMA_BIT_MASK(32));
503                         if (rc) {
504                                 dev_printk(KERN_ERR, &pdev->dev,
505                                         "44-bit DMA enable failed\n");
506                                 return rc;
507                         }
508                 }
509         } else {
510                 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
511                 if (rc) {
512                         dev_printk(KERN_ERR, &pdev->dev,
513                                 "32-bit DMA enable failed\n");
514                         return rc;
515                 }
516                 rc = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
517                 if (rc) {
518                         dev_printk(KERN_ERR, &pdev->dev,
519                                 "32-bit consistent DMA enable failed\n");
520                         return rc;
521                 }
522         }
523         return rc;
524 }
525
526 /**
527  * pm8001_prep_sas_ha_init - allocate memory in general hba struct && init them.
528  * @shost: scsi host which has been allocated outside.
529  * @chip_info: our ha struct.
530  */
531 static int pm8001_prep_sas_ha_init(struct Scsi_Host *shost,
532                                    const struct pm8001_chip_info *chip_info)
533 {
534         int phy_nr, port_nr;
535         struct asd_sas_phy **arr_phy;
536         struct asd_sas_port **arr_port;
537         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
538
539         phy_nr = chip_info->n_phy;
540         port_nr = phy_nr;
541         memset(sha, 0x00, sizeof(*sha));
542         arr_phy = kcalloc(phy_nr, sizeof(void *), GFP_KERNEL);
543         if (!arr_phy)
544                 goto exit;
545         arr_port = kcalloc(port_nr, sizeof(void *), GFP_KERNEL);
546         if (!arr_port)
547                 goto exit_free2;
548
549         sha->sas_phy = arr_phy;
550         sha->sas_port = arr_port;
551         sha->lldd_ha = kzalloc(sizeof(struct pm8001_hba_info), GFP_KERNEL);
552         if (!sha->lldd_ha)
553                 goto exit_free1;
554
555         shost->transportt = pm8001_stt;
556         shost->max_id = PM8001_MAX_DEVICES;
557         shost->max_lun = 8;
558         shost->max_channel = 0;
559         shost->unique_id = pm8001_id;
560         shost->max_cmd_len = 16;
561         shost->can_queue = PM8001_CAN_QUEUE;
562         shost->cmd_per_lun = 32;
563         return 0;
564 exit_free1:
565         kfree(arr_port);
566 exit_free2:
567         kfree(arr_phy);
568 exit:
569         return -1;
570 }
571
572 /**
573  * pm8001_post_sas_ha_init - initialize general hba struct defined in libsas
574  * @shost: scsi host which has been allocated outside
575  * @chip_info: our ha struct.
576  */
577 static void  pm8001_post_sas_ha_init(struct Scsi_Host *shost,
578                                      const struct pm8001_chip_info *chip_info)
579 {
580         int i = 0;
581         struct pm8001_hba_info *pm8001_ha;
582         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
583
584         pm8001_ha = sha->lldd_ha;
585         for (i = 0; i < chip_info->n_phy; i++) {
586                 sha->sas_phy[i] = &pm8001_ha->phy[i].sas_phy;
587                 sha->sas_port[i] = &pm8001_ha->port[i].sas_port;
588         }
589         sha->sas_ha_name = DRV_NAME;
590         sha->dev = pm8001_ha->dev;
591
592         sha->lldd_module = THIS_MODULE;
593         sha->sas_addr = &pm8001_ha->sas_addr[0];
594         sha->num_phys = chip_info->n_phy;
595         sha->lldd_max_execute_num = 1;
596         sha->lldd_queue_size = PM8001_CAN_QUEUE;
597         sha->core.shost = shost;
598 }
599
600 /**
601  * pm8001_init_sas_add - initialize sas address
602  * @chip_info: our ha struct.
603  *
604  * Currently we just set the fixed SAS address to our HBA,for manufacture,
605  * it should read from the EEPROM
606  */
607 static void pm8001_init_sas_add(struct pm8001_hba_info *pm8001_ha)
608 {
609         u8 i, j;
610 #ifdef PM8001_READ_VPD
611         /* For new SPC controllers WWN is stored in flash vpd
612         *  For SPC/SPCve controllers WWN is stored in EEPROM
613         *  For Older SPC WWN is stored in NVMD
614         */
615         DECLARE_COMPLETION_ONSTACK(completion);
616         struct pm8001_ioctl_payload payload;
617         u16 deviceid;
618         pci_read_config_word(pm8001_ha->pdev, PCI_DEVICE_ID, &deviceid);
619         pm8001_ha->nvmd_completion = &completion;
620
621         if (pm8001_ha->chip_id == chip_8001) {
622                 if (deviceid == 0x8081) {
623                         payload.minor_function = 4;
624                         payload.length = 4096;
625                 } else {
626                         payload.minor_function = 0;
627                         payload.length = 128;
628                 }
629         } else {
630                 payload.minor_function = 1;
631                 payload.length = 4096;
632         }
633         payload.offset = 0;
634         payload.func_specific = kzalloc(payload.length, GFP_KERNEL);
635         PM8001_CHIP_DISP->get_nvmd_req(pm8001_ha, &payload);
636         wait_for_completion(&completion);
637
638         for (i = 0, j = 0; i <= 7; i++, j++) {
639                 if (pm8001_ha->chip_id == chip_8001) {
640                         if (deviceid == 0x8081)
641                                 pm8001_ha->sas_addr[j] =
642                                         payload.func_specific[0x704 + i];
643                 } else
644                         pm8001_ha->sas_addr[j] =
645                                         payload.func_specific[0x804 + i];
646         }
647
648         for (i = 0; i < pm8001_ha->chip->n_phy; i++) {
649                 memcpy(&pm8001_ha->phy[i].dev_sas_addr,
650                         pm8001_ha->sas_addr, SAS_ADDR_SIZE);
651                 PM8001_INIT_DBG(pm8001_ha,
652                         pm8001_printk("phy %d sas_addr = %016llx\n", i,
653                         pm8001_ha->phy[i].dev_sas_addr));
654         }
655 #else
656         for (i = 0; i < pm8001_ha->chip->n_phy; i++) {
657                 pm8001_ha->phy[i].dev_sas_addr = 0x50010c600047f9d0ULL;
658                 pm8001_ha->phy[i].dev_sas_addr =
659                         cpu_to_be64((u64)
660                                 (*(u64 *)&pm8001_ha->phy[i].dev_sas_addr));
661         }
662         memcpy(pm8001_ha->sas_addr, &pm8001_ha->phy[0].dev_sas_addr,
663                 SAS_ADDR_SIZE);
664 #endif
665 }
666
667 #ifdef PM8001_USE_MSIX
668 /**
669  * pm8001_setup_msix - enable MSI-X interrupt
670  * @chip_info: our ha struct.
671  * @irq_handler: irq_handler
672  */
673 static u32 pm8001_setup_msix(struct pm8001_hba_info *pm8001_ha)
674 {
675         u32 i = 0, j = 0;
676         u32 number_of_intr;
677         int flag = 0;
678         u32 max_entry;
679         int rc;
680         static char intr_drvname[PM8001_MAX_MSIX_VEC][sizeof(DRV_NAME)+3];
681
682         /* SPCv controllers supports 64 msi-x */
683         if (pm8001_ha->chip_id == chip_8001) {
684                 number_of_intr = 1;
685                 flag |= IRQF_DISABLED;
686         } else {
687                 number_of_intr = PM8001_MAX_MSIX_VEC;
688                 flag &= ~IRQF_SHARED;
689                 flag |= IRQF_DISABLED;
690         }
691
692         max_entry = sizeof(pm8001_ha->msix_entries) /
693                 sizeof(pm8001_ha->msix_entries[0]);
694         for (i = 0; i < max_entry ; i++)
695                 pm8001_ha->msix_entries[i].entry = i;
696         rc = pci_enable_msix(pm8001_ha->pdev, pm8001_ha->msix_entries,
697                 number_of_intr);
698         pm8001_ha->number_of_intr = number_of_intr;
699         if (!rc) {
700                 PM8001_INIT_DBG(pm8001_ha, pm8001_printk(
701                         "pci_enable_msix request ret:%d no of intr %d\n",
702                                         rc, pm8001_ha->number_of_intr));
703
704                 for (i = 0; i < number_of_intr; i++)
705                         pm8001_ha->outq[i] = i;
706
707                 for (i = 0; i < number_of_intr; i++) {
708                         snprintf(intr_drvname[i], sizeof(intr_drvname[0]),
709                                         DRV_NAME"%d", i);
710                         if (request_irq(pm8001_ha->msix_entries[i].vector,
711                                 pm8001_interrupt_handler_msix, flag,
712                                 intr_drvname[i], &pm8001_ha->outq[i])) {
713                                 for (j = 0; j < i; j++)
714                                         free_irq(
715                                         pm8001_ha->msix_entries[j].vector,
716                                         &pm8001_ha->outq[j]);
717                                 pci_disable_msix(pm8001_ha->pdev);
718                                 break;
719                         }
720                 }
721         }
722         return rc;
723 }
724 #endif
725
726 /**
727  * pm8001_request_irq - register interrupt
728  * @chip_info: our ha struct.
729  */
730 static u32 pm8001_request_irq(struct pm8001_hba_info *pm8001_ha)
731 {
732         struct pci_dev *pdev;
733         int rc;
734
735         pdev = pm8001_ha->pdev;
736
737 #ifdef PM8001_USE_MSIX
738         if (pdev->msix_cap)
739                 return pm8001_setup_msix(pm8001_ha);
740         else {
741                 PM8001_INIT_DBG(pm8001_ha,
742                         pm8001_printk("MSIX not supported!!!\n"));
743                 goto intx;
744         }
745 #endif
746
747 intx:
748         /* initialize the INT-X interrupt */
749         rc = request_irq(pdev->irq, pm8001_interrupt_handler_intx, IRQF_SHARED,
750                 DRV_NAME, SHOST_TO_SAS_HA(pm8001_ha->shost));
751         return rc;
752 }
753
754 /**
755  * pm8001_pci_probe - probe supported device
756  * @pdev: pci device which kernel has been prepared for.
757  * @ent: pci device id
758  *
759  * This function is the main initialization function, when register a new
760  * pci driver it is invoked, all struct an hardware initilization should be done
761  * here, also, register interrupt
762  */
763 static int pm8001_pci_probe(struct pci_dev *pdev,
764                             const struct pci_device_id *ent)
765 {
766         unsigned int rc;
767         u32     pci_reg;
768         u8      i = 0;
769         struct pm8001_hba_info *pm8001_ha;
770         struct Scsi_Host *shost = NULL;
771         const struct pm8001_chip_info *chip;
772
773         dev_printk(KERN_INFO, &pdev->dev,
774                 "pm80xx: driver version %s\n", DRV_VERSION);
775         rc = pci_enable_device(pdev);
776         if (rc)
777                 goto err_out_enable;
778         pci_set_master(pdev);
779         /*
780          * Enable pci slot busmaster by setting pci command register.
781          * This is required by FW for Cyclone card.
782          */
783
784         pci_read_config_dword(pdev, PCI_COMMAND, &pci_reg);
785         pci_reg |= 0x157;
786         pci_write_config_dword(pdev, PCI_COMMAND, pci_reg);
787         rc = pci_request_regions(pdev, DRV_NAME);
788         if (rc)
789                 goto err_out_disable;
790         rc = pci_go_44(pdev);
791         if (rc)
792                 goto err_out_regions;
793
794         shost = scsi_host_alloc(&pm8001_sht, sizeof(void *));
795         if (!shost) {
796                 rc = -ENOMEM;
797                 goto err_out_regions;
798         }
799         chip = &pm8001_chips[ent->driver_data];
800         SHOST_TO_SAS_HA(shost) =
801                 kzalloc(sizeof(struct sas_ha_struct), GFP_KERNEL);
802         if (!SHOST_TO_SAS_HA(shost)) {
803                 rc = -ENOMEM;
804                 goto err_out_free_host;
805         }
806
807         rc = pm8001_prep_sas_ha_init(shost, chip);
808         if (rc) {
809                 rc = -ENOMEM;
810                 goto err_out_free;
811         }
812         pci_set_drvdata(pdev, SHOST_TO_SAS_HA(shost));
813         /* ent->driver variable is used to differentiate between controllers */
814         pm8001_ha = pm8001_pci_alloc(pdev, ent, shost);
815         if (!pm8001_ha) {
816                 rc = -ENOMEM;
817                 goto err_out_free;
818         }
819         list_add_tail(&pm8001_ha->list, &hba_list);
820         PM8001_CHIP_DISP->chip_soft_rst(pm8001_ha);
821         rc = PM8001_CHIP_DISP->chip_init(pm8001_ha);
822         if (rc) {
823                 PM8001_FAIL_DBG(pm8001_ha, pm8001_printk(
824                         "chip_init failed [ret: %d]\n", rc));
825                 goto err_out_ha_free;
826         }
827
828         rc = scsi_add_host(shost, &pdev->dev);
829         if (rc)
830                 goto err_out_ha_free;
831         rc = pm8001_request_irq(pm8001_ha);
832         if (rc) {
833                 PM8001_FAIL_DBG(pm8001_ha, pm8001_printk(
834                         "pm8001_request_irq failed [ret: %d]\n", rc));
835                 goto err_out_shost;
836         }
837
838         PM8001_CHIP_DISP->interrupt_enable(pm8001_ha, 0);
839         if (pm8001_ha->chip_id != chip_8001) {
840                 for (i = 1; i < pm8001_ha->number_of_intr; i++)
841                         PM8001_CHIP_DISP->interrupt_enable(pm8001_ha, i);
842                 /* setup thermal configuration. */
843                 pm80xx_set_thermal_config(pm8001_ha);
844         }
845
846         pm8001_init_sas_add(pm8001_ha);
847         pm8001_post_sas_ha_init(shost, chip);
848         rc = sas_register_ha(SHOST_TO_SAS_HA(shost));
849         if (rc)
850                 goto err_out_shost;
851         scsi_scan_host(pm8001_ha->shost);
852         return 0;
853
854 err_out_shost:
855         scsi_remove_host(pm8001_ha->shost);
856 err_out_ha_free:
857         pm8001_free(pm8001_ha);
858 err_out_free:
859         kfree(SHOST_TO_SAS_HA(shost));
860 err_out_free_host:
861         kfree(shost);
862 err_out_regions:
863         pci_release_regions(pdev);
864 err_out_disable:
865         pci_disable_device(pdev);
866 err_out_enable:
867         return rc;
868 }
869
870 static void pm8001_pci_remove(struct pci_dev *pdev)
871 {
872         struct sas_ha_struct *sha = pci_get_drvdata(pdev);
873         struct pm8001_hba_info *pm8001_ha;
874         int i;
875         pm8001_ha = sha->lldd_ha;
876         pci_set_drvdata(pdev, NULL);
877         sas_unregister_ha(sha);
878         sas_remove_host(pm8001_ha->shost);
879         list_del(&pm8001_ha->list);
880         scsi_remove_host(pm8001_ha->shost);
881         PM8001_CHIP_DISP->interrupt_disable(pm8001_ha, 0xFF);
882         PM8001_CHIP_DISP->chip_soft_rst(pm8001_ha);
883
884 #ifdef PM8001_USE_MSIX
885         for (i = 0; i < pm8001_ha->number_of_intr; i++)
886                 synchronize_irq(pm8001_ha->msix_entries[i].vector);
887         for (i = 0; i < pm8001_ha->number_of_intr; i++)
888                 free_irq(pm8001_ha->msix_entries[i].vector,
889                                 &pm8001_ha->outq[i]);
890         pci_disable_msix(pdev);
891 #else
892         free_irq(pm8001_ha->irq, sha);
893 #endif
894 #ifdef PM8001_USE_TASKLET
895         tasklet_kill(&pm8001_ha->tasklet);
896 #endif
897         pm8001_free(pm8001_ha);
898         kfree(sha->sas_phy);
899         kfree(sha->sas_port);
900         kfree(sha);
901         pci_release_regions(pdev);
902         pci_disable_device(pdev);
903 }
904
905 /**
906  * pm8001_pci_suspend - power management suspend main entry point
907  * @pdev: PCI device struct
908  * @state: PM state change to (usually PCI_D3)
909  *
910  * Returns 0 success, anything else error.
911  */
912 static int pm8001_pci_suspend(struct pci_dev *pdev, pm_message_t state)
913 {
914         struct sas_ha_struct *sha = pci_get_drvdata(pdev);
915         struct pm8001_hba_info *pm8001_ha;
916         int i;
917         u32 device_state;
918         pm8001_ha = sha->lldd_ha;
919         flush_workqueue(pm8001_wq);
920         scsi_block_requests(pm8001_ha->shost);
921         if (!pdev->pm_cap) {
922                 dev_err(&pdev->dev, " PCI PM not supported\n");
923                 return -ENODEV;
924         }
925         PM8001_CHIP_DISP->interrupt_disable(pm8001_ha, 0xFF);
926         PM8001_CHIP_DISP->chip_soft_rst(pm8001_ha);
927 #ifdef PM8001_USE_MSIX
928         for (i = 0; i < pm8001_ha->number_of_intr; i++)
929                 synchronize_irq(pm8001_ha->msix_entries[i].vector);
930         for (i = 0; i < pm8001_ha->number_of_intr; i++)
931                 free_irq(pm8001_ha->msix_entries[i].vector,
932                                 &pm8001_ha->outq[i]);
933         pci_disable_msix(pdev);
934 #else
935         free_irq(pm8001_ha->irq, sha);
936 #endif
937 #ifdef PM8001_USE_TASKLET
938         tasklet_kill(&pm8001_ha->tasklet);
939 #endif
940         device_state = pci_choose_state(pdev, state);
941         pm8001_printk("pdev=0x%p, slot=%s, entering "
942                       "operating state [D%d]\n", pdev,
943                       pm8001_ha->name, device_state);
944         pci_save_state(pdev);
945         pci_disable_device(pdev);
946         pci_set_power_state(pdev, device_state);
947         return 0;
948 }
949
950 /**
951  * pm8001_pci_resume - power management resume main entry point
952  * @pdev: PCI device struct
953  *
954  * Returns 0 success, anything else error.
955  */
956 static int pm8001_pci_resume(struct pci_dev *pdev)
957 {
958         struct sas_ha_struct *sha = pci_get_drvdata(pdev);
959         struct pm8001_hba_info *pm8001_ha;
960         int rc;
961         u8 i = 0;
962         u32 device_state;
963         pm8001_ha = sha->lldd_ha;
964         device_state = pdev->current_state;
965
966         pm8001_printk("pdev=0x%p, slot=%s, resuming from previous "
967                 "operating state [D%d]\n", pdev, pm8001_ha->name, device_state);
968
969         pci_set_power_state(pdev, PCI_D0);
970         pci_enable_wake(pdev, PCI_D0, 0);
971         pci_restore_state(pdev);
972         rc = pci_enable_device(pdev);
973         if (rc) {
974                 pm8001_printk("slot=%s Enable device failed during resume\n",
975                               pm8001_ha->name);
976                 goto err_out_enable;
977         }
978
979         pci_set_master(pdev);
980         rc = pci_go_44(pdev);
981         if (rc)
982                 goto err_out_disable;
983
984         /* chip soft rst only for spc */
985         if (pm8001_ha->chip_id == chip_8001) {
986                 PM8001_CHIP_DISP->chip_soft_rst(pm8001_ha);
987                 PM8001_INIT_DBG(pm8001_ha,
988                         pm8001_printk("chip soft reset successful\n"));
989         }
990         rc = PM8001_CHIP_DISP->chip_init(pm8001_ha);
991         if (rc)
992                 goto err_out_disable;
993
994         /* disable all the interrupt bits */
995         PM8001_CHIP_DISP->interrupt_disable(pm8001_ha, 0xFF);
996
997         rc = pm8001_request_irq(pm8001_ha);
998         if (rc)
999                 goto err_out_disable;
1000 #ifdef PM8001_USE_TASKLET
1001         /* default tasklet for non msi-x interrupt handler/first msi-x
1002         * interrupt handler */
1003         tasklet_init(&pm8001_ha->tasklet, pm8001_tasklet,
1004                         (unsigned long)pm8001_ha);
1005 #endif
1006         PM8001_CHIP_DISP->interrupt_enable(pm8001_ha, 0);
1007         if (pm8001_ha->chip_id != chip_8001) {
1008                 for (i = 1; i < pm8001_ha->number_of_intr; i++)
1009                         PM8001_CHIP_DISP->interrupt_enable(pm8001_ha, i);
1010         }
1011         scsi_unblock_requests(pm8001_ha->shost);
1012         return 0;
1013
1014 err_out_disable:
1015         scsi_remove_host(pm8001_ha->shost);
1016         pci_disable_device(pdev);
1017 err_out_enable:
1018         return rc;
1019 }
1020
1021 /* update of pci device, vendor id and driver data with
1022  * unique value for each of the controller
1023  */
1024 static struct pci_device_id pm8001_pci_table[] = {
1025         { PCI_VDEVICE(PMC_Sierra, 0x8001), chip_8001 },
1026         {
1027                 PCI_DEVICE(0x117c, 0x0042),
1028                 .driver_data = chip_8001
1029         },
1030         /* Support for SPC/SPCv/SPCve controllers */
1031         { PCI_VDEVICE(ADAPTEC2, 0x8001), chip_8001 },
1032         { PCI_VDEVICE(PMC_Sierra, 0x8008), chip_8008 },
1033         { PCI_VDEVICE(ADAPTEC2, 0x8008), chip_8008 },
1034         { PCI_VDEVICE(PMC_Sierra, 0x8018), chip_8018 },
1035         { PCI_VDEVICE(ADAPTEC2, 0x8018), chip_8018 },
1036         { PCI_VDEVICE(PMC_Sierra, 0x8009), chip_8009 },
1037         { PCI_VDEVICE(ADAPTEC2, 0x8009), chip_8009 },
1038         { PCI_VDEVICE(PMC_Sierra, 0x8019), chip_8019 },
1039         { PCI_VDEVICE(ADAPTEC2, 0x8019), chip_8019 },
1040         { PCI_VENDOR_ID_ADAPTEC2, 0x8081,
1041                 PCI_VENDOR_ID_ADAPTEC2, 0x0400, 0, 0, chip_8001 },
1042         { PCI_VENDOR_ID_ADAPTEC2, 0x8081,
1043                 PCI_VENDOR_ID_ADAPTEC2, 0x0800, 0, 0, chip_8001 },
1044         { PCI_VENDOR_ID_ADAPTEC2, 0x8088,
1045                 PCI_VENDOR_ID_ADAPTEC2, 0x0008, 0, 0, chip_8008 },
1046         { PCI_VENDOR_ID_ADAPTEC2, 0x8088,
1047                 PCI_VENDOR_ID_ADAPTEC2, 0x0800, 0, 0, chip_8008 },
1048         { PCI_VENDOR_ID_ADAPTEC2, 0x8089,
1049                 PCI_VENDOR_ID_ADAPTEC2, 0x0008, 0, 0, chip_8009 },
1050         { PCI_VENDOR_ID_ADAPTEC2, 0x8089,
1051                 PCI_VENDOR_ID_ADAPTEC2, 0x0800, 0, 0, chip_8009 },
1052         { PCI_VENDOR_ID_ADAPTEC2, 0x8088,
1053                 PCI_VENDOR_ID_ADAPTEC2, 0x0016, 0, 0, chip_8018 },
1054         { PCI_VENDOR_ID_ADAPTEC2, 0x8088,
1055                 PCI_VENDOR_ID_ADAPTEC2, 0x1600, 0, 0, chip_8018 },
1056         { PCI_VENDOR_ID_ADAPTEC2, 0x8089,
1057                 PCI_VENDOR_ID_ADAPTEC2, 0x0016, 0, 0, chip_8019 },
1058         { PCI_VENDOR_ID_ADAPTEC2, 0x8089,
1059                 PCI_VENDOR_ID_ADAPTEC2, 0x1600, 0, 0, chip_8019 },
1060         {} /* terminate list */
1061 };
1062
1063 static struct pci_driver pm8001_pci_driver = {
1064         .name           = DRV_NAME,
1065         .id_table       = pm8001_pci_table,
1066         .probe          = pm8001_pci_probe,
1067         .remove         = pm8001_pci_remove,
1068         .suspend        = pm8001_pci_suspend,
1069         .resume         = pm8001_pci_resume,
1070 };
1071
1072 /**
1073  *      pm8001_init - initialize scsi transport template
1074  */
1075 static int __init pm8001_init(void)
1076 {
1077         int rc = -ENOMEM;
1078
1079         pm8001_wq = alloc_workqueue("pm80xx", 0, 0);
1080         if (!pm8001_wq)
1081                 goto err;
1082
1083         pm8001_id = 0;
1084         pm8001_stt = sas_domain_attach_transport(&pm8001_transport_ops);
1085         if (!pm8001_stt)
1086                 goto err_wq;
1087         rc = pci_register_driver(&pm8001_pci_driver);
1088         if (rc)
1089                 goto err_tp;
1090         return 0;
1091
1092 err_tp:
1093         sas_release_transport(pm8001_stt);
1094 err_wq:
1095         destroy_workqueue(pm8001_wq);
1096 err:
1097         return rc;
1098 }
1099
1100 static void __exit pm8001_exit(void)
1101 {
1102         pci_unregister_driver(&pm8001_pci_driver);
1103         sas_release_transport(pm8001_stt);
1104         destroy_workqueue(pm8001_wq);
1105 }
1106
1107 module_init(pm8001_init);
1108 module_exit(pm8001_exit);
1109
1110 MODULE_AUTHOR("Jack Wang <jack_wang@usish.com>");
1111 MODULE_DESCRIPTION(
1112                 "PMC-Sierra PM8001/8081/8088/8089 SAS/SATA controller driver");
1113 MODULE_VERSION(DRV_VERSION);
1114 MODULE_LICENSE("GPL");
1115 MODULE_DEVICE_TABLE(pci, pm8001_pci_table);
1116