c21a2163f9f6eb915072c1210b939dfeb29b479a
[linux-2.6.git] / drivers / scsi / pm8001 / pm8001_init.c
1 /*
2  * PMC-Sierra SPC 8001 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 static const struct pm8001_chip_info pm8001_chips[] = {
48         [chip_8001] = {  8, &pm8001_8001_dispatch,},
49 };
50 static int pm8001_id;
51
52 LIST_HEAD(hba_list);
53
54 struct workqueue_struct *pm8001_wq;
55
56 /**
57  * The main structure which LLDD must register for scsi core.
58  */
59 static struct scsi_host_template pm8001_sht = {
60         .module                 = THIS_MODULE,
61         .name                   = DRV_NAME,
62         .queuecommand           = sas_queuecommand,
63         .target_alloc           = sas_target_alloc,
64         .slave_configure        = sas_slave_configure,
65         .slave_destroy          = sas_slave_destroy,
66         .scan_finished          = pm8001_scan_finished,
67         .scan_start             = pm8001_scan_start,
68         .change_queue_depth     = sas_change_queue_depth,
69         .change_queue_type      = sas_change_queue_type,
70         .bios_param             = sas_bios_param,
71         .can_queue              = 1,
72         .cmd_per_lun            = 1,
73         .this_id                = -1,
74         .sg_tablesize           = SG_ALL,
75         .max_sectors            = SCSI_DEFAULT_MAX_SECTORS,
76         .use_clustering         = ENABLE_CLUSTERING,
77         .eh_device_reset_handler = sas_eh_device_reset_handler,
78         .eh_bus_reset_handler   = sas_eh_bus_reset_handler,
79         .slave_alloc            = sas_slave_alloc,
80         .target_destroy         = sas_target_destroy,
81         .ioctl                  = sas_ioctl,
82         .shost_attrs            = pm8001_host_attrs,
83 };
84
85 /**
86  * Sas layer call this function to execute specific task.
87  */
88 static struct sas_domain_function_template pm8001_transport_ops = {
89         .lldd_dev_found         = pm8001_dev_found,
90         .lldd_dev_gone          = pm8001_dev_gone,
91
92         .lldd_execute_task      = pm8001_queue_command,
93         .lldd_control_phy       = pm8001_phy_control,
94
95         .lldd_abort_task        = pm8001_abort_task,
96         .lldd_abort_task_set    = pm8001_abort_task_set,
97         .lldd_clear_aca         = pm8001_clear_aca,
98         .lldd_clear_task_set    = pm8001_clear_task_set,
99         .lldd_I_T_nexus_reset   = pm8001_I_T_nexus_reset,
100         .lldd_lu_reset          = pm8001_lu_reset,
101         .lldd_query_task        = pm8001_query_task,
102 };
103
104 /**
105  *pm8001_phy_init - initiate our adapter phys
106  *@pm8001_ha: our hba structure.
107  *@phy_id: phy id.
108  */
109 static void __devinit pm8001_phy_init(struct pm8001_hba_info *pm8001_ha,
110         int phy_id)
111 {
112         struct pm8001_phy *phy = &pm8001_ha->phy[phy_id];
113         struct asd_sas_phy *sas_phy = &phy->sas_phy;
114         phy->phy_state = 0;
115         phy->pm8001_ha = pm8001_ha;
116         sas_phy->enabled = (phy_id < pm8001_ha->chip->n_phy) ? 1 : 0;
117         sas_phy->class = SAS;
118         sas_phy->iproto = SAS_PROTOCOL_ALL;
119         sas_phy->tproto = 0;
120         sas_phy->type = PHY_TYPE_PHYSICAL;
121         sas_phy->role = PHY_ROLE_INITIATOR;
122         sas_phy->oob_mode = OOB_NOT_CONNECTED;
123         sas_phy->linkrate = SAS_LINK_RATE_UNKNOWN;
124         sas_phy->id = phy_id;
125         sas_phy->sas_addr = &pm8001_ha->sas_addr[0];
126         sas_phy->frame_rcvd = &phy->frame_rcvd[0];
127         sas_phy->ha = (struct sas_ha_struct *)pm8001_ha->shost->hostdata;
128         sas_phy->lldd_phy = phy;
129 }
130
131 /**
132  *pm8001_free - free hba
133  *@pm8001_ha:   our hba structure.
134  *
135  */
136 static void pm8001_free(struct pm8001_hba_info *pm8001_ha)
137 {
138         int i;
139
140         if (!pm8001_ha)
141                 return;
142
143         for (i = 0; i < USI_MAX_MEMCNT; i++) {
144                 if (pm8001_ha->memoryMap.region[i].virt_ptr != NULL) {
145                         pci_free_consistent(pm8001_ha->pdev,
146                                 pm8001_ha->memoryMap.region[i].element_size,
147                                 pm8001_ha->memoryMap.region[i].virt_ptr,
148                                 pm8001_ha->memoryMap.region[i].phys_addr);
149                         }
150         }
151         PM8001_CHIP_DISP->chip_iounmap(pm8001_ha);
152         if (pm8001_ha->shost)
153                 scsi_host_put(pm8001_ha->shost);
154         flush_workqueue(pm8001_wq);
155         kfree(pm8001_ha->tags);
156         kfree(pm8001_ha);
157 }
158
159 #ifdef PM8001_USE_TASKLET
160 static void pm8001_tasklet(unsigned long opaque)
161 {
162         struct pm8001_hba_info *pm8001_ha;
163         pm8001_ha = (struct pm8001_hba_info *)opaque;
164         if (unlikely(!pm8001_ha))
165                 BUG_ON(1);
166         PM8001_CHIP_DISP->isr(pm8001_ha);
167 }
168 #endif
169
170
171  /**
172   * pm8001_interrupt - when HBA originate a interrupt,we should invoke this
173   * dispatcher to handle each case.
174   * @irq: irq number.
175   * @opaque: the passed general host adapter struct
176   */
177 static irqreturn_t pm8001_interrupt(int irq, void *opaque)
178 {
179         struct pm8001_hba_info *pm8001_ha;
180         irqreturn_t ret = IRQ_HANDLED;
181         struct sas_ha_struct *sha = opaque;
182         pm8001_ha = sha->lldd_ha;
183         if (unlikely(!pm8001_ha))
184                 return IRQ_NONE;
185         if (!PM8001_CHIP_DISP->is_our_interupt(pm8001_ha))
186                 return IRQ_NONE;
187 #ifdef PM8001_USE_TASKLET
188         tasklet_schedule(&pm8001_ha->tasklet);
189 #else
190         ret = PM8001_CHIP_DISP->isr(pm8001_ha);
191 #endif
192         return ret;
193 }
194
195 /**
196  * pm8001_alloc - initiate our hba structure and 6 DMAs area.
197  * @pm8001_ha:our hba structure.
198  *
199  */
200 static int __devinit pm8001_alloc(struct pm8001_hba_info *pm8001_ha)
201 {
202         int i;
203         spin_lock_init(&pm8001_ha->lock);
204         for (i = 0; i < pm8001_ha->chip->n_phy; i++) {
205                 pm8001_phy_init(pm8001_ha, i);
206                 pm8001_ha->port[i].wide_port_phymap = 0;
207                 pm8001_ha->port[i].port_attached = 0;
208                 pm8001_ha->port[i].port_state = 0;
209                 INIT_LIST_HEAD(&pm8001_ha->port[i].list);
210         }
211
212         pm8001_ha->tags = kzalloc(PM8001_MAX_CCB, GFP_KERNEL);
213         if (!pm8001_ha->tags)
214                 goto err_out;
215         /* MPI Memory region 1 for AAP Event Log for fw */
216         pm8001_ha->memoryMap.region[AAP1].num_elements = 1;
217         pm8001_ha->memoryMap.region[AAP1].element_size = PM8001_EVENT_LOG_SIZE;
218         pm8001_ha->memoryMap.region[AAP1].total_len = PM8001_EVENT_LOG_SIZE;
219         pm8001_ha->memoryMap.region[AAP1].alignment = 32;
220
221         /* MPI Memory region 2 for IOP Event Log for fw */
222         pm8001_ha->memoryMap.region[IOP].num_elements = 1;
223         pm8001_ha->memoryMap.region[IOP].element_size = PM8001_EVENT_LOG_SIZE;
224         pm8001_ha->memoryMap.region[IOP].total_len = PM8001_EVENT_LOG_SIZE;
225         pm8001_ha->memoryMap.region[IOP].alignment = 32;
226
227         /* MPI Memory region 3 for consumer Index of inbound queues */
228         pm8001_ha->memoryMap.region[CI].num_elements = 1;
229         pm8001_ha->memoryMap.region[CI].element_size = 4;
230         pm8001_ha->memoryMap.region[CI].total_len = 4;
231         pm8001_ha->memoryMap.region[CI].alignment = 4;
232
233         /* MPI Memory region 4 for producer Index of outbound queues */
234         pm8001_ha->memoryMap.region[PI].num_elements = 1;
235         pm8001_ha->memoryMap.region[PI].element_size = 4;
236         pm8001_ha->memoryMap.region[PI].total_len = 4;
237         pm8001_ha->memoryMap.region[PI].alignment = 4;
238
239         /* MPI Memory region 5 inbound queues */
240         pm8001_ha->memoryMap.region[IB].num_elements = 256;
241         pm8001_ha->memoryMap.region[IB].element_size = 64;
242         pm8001_ha->memoryMap.region[IB].total_len = 256 * 64;
243         pm8001_ha->memoryMap.region[IB].alignment = 64;
244
245         /* MPI Memory region 6 inbound queues */
246         pm8001_ha->memoryMap.region[OB].num_elements = 256;
247         pm8001_ha->memoryMap.region[OB].element_size = 64;
248         pm8001_ha->memoryMap.region[OB].total_len = 256 * 64;
249         pm8001_ha->memoryMap.region[OB].alignment = 64;
250
251         /* Memory region write DMA*/
252         pm8001_ha->memoryMap.region[NVMD].num_elements = 1;
253         pm8001_ha->memoryMap.region[NVMD].element_size = 4096;
254         pm8001_ha->memoryMap.region[NVMD].total_len = 4096;
255         /* Memory region for devices*/
256         pm8001_ha->memoryMap.region[DEV_MEM].num_elements = 1;
257         pm8001_ha->memoryMap.region[DEV_MEM].element_size = PM8001_MAX_DEVICES *
258                 sizeof(struct pm8001_device);
259         pm8001_ha->memoryMap.region[DEV_MEM].total_len = PM8001_MAX_DEVICES *
260                 sizeof(struct pm8001_device);
261
262         /* Memory region for ccb_info*/
263         pm8001_ha->memoryMap.region[CCB_MEM].num_elements = 1;
264         pm8001_ha->memoryMap.region[CCB_MEM].element_size = PM8001_MAX_CCB *
265                 sizeof(struct pm8001_ccb_info);
266         pm8001_ha->memoryMap.region[CCB_MEM].total_len = PM8001_MAX_CCB *
267                 sizeof(struct pm8001_ccb_info);
268
269         for (i = 0; i < USI_MAX_MEMCNT; i++) {
270                 if (pm8001_mem_alloc(pm8001_ha->pdev,
271                         &pm8001_ha->memoryMap.region[i].virt_ptr,
272                         &pm8001_ha->memoryMap.region[i].phys_addr,
273                         &pm8001_ha->memoryMap.region[i].phys_addr_hi,
274                         &pm8001_ha->memoryMap.region[i].phys_addr_lo,
275                         pm8001_ha->memoryMap.region[i].total_len,
276                         pm8001_ha->memoryMap.region[i].alignment) != 0) {
277                                 PM8001_FAIL_DBG(pm8001_ha,
278                                         pm8001_printk("Mem%d alloc failed\n",
279                                         i));
280                                 goto err_out;
281                 }
282         }
283
284         pm8001_ha->devices = pm8001_ha->memoryMap.region[DEV_MEM].virt_ptr;
285         for (i = 0; i < PM8001_MAX_DEVICES; i++) {
286                 pm8001_ha->devices[i].dev_type = NO_DEVICE;
287                 pm8001_ha->devices[i].id = i;
288                 pm8001_ha->devices[i].device_id = PM8001_MAX_DEVICES;
289                 pm8001_ha->devices[i].running_req = 0;
290         }
291         pm8001_ha->ccb_info = pm8001_ha->memoryMap.region[CCB_MEM].virt_ptr;
292         for (i = 0; i < PM8001_MAX_CCB; i++) {
293                 pm8001_ha->ccb_info[i].ccb_dma_handle =
294                         pm8001_ha->memoryMap.region[CCB_MEM].phys_addr +
295                         i * sizeof(struct pm8001_ccb_info);
296                 pm8001_ha->ccb_info[i].task = NULL;
297                 pm8001_ha->ccb_info[i].ccb_tag = 0xffffffff;
298                 pm8001_ha->ccb_info[i].device = NULL;
299                 ++pm8001_ha->tags_num;
300         }
301         pm8001_ha->flags = PM8001F_INIT_TIME;
302         /* Initialize tags */
303         pm8001_tag_init(pm8001_ha);
304         return 0;
305 err_out:
306         return 1;
307 }
308
309 /**
310  * pm8001_ioremap - remap the pci high physical address to kernal virtual
311  * address so that we can access them.
312  * @pm8001_ha:our hba structure.
313  */
314 static int pm8001_ioremap(struct pm8001_hba_info *pm8001_ha)
315 {
316         u32 bar;
317         u32 logicalBar = 0;
318         struct pci_dev *pdev;
319
320         pdev = pm8001_ha->pdev;
321         /* map pci mem (PMC pci base 0-3)*/
322         for (bar = 0; bar < 6; bar++) {
323                 /*
324                 ** logical BARs for SPC:
325                 ** bar 0 and 1 - logical BAR0
326                 ** bar 2 and 3 - logical BAR1
327                 ** bar4 - logical BAR2
328                 ** bar5 - logical BAR3
329                 ** Skip the appropriate assignments:
330                 */
331                 if ((bar == 1) || (bar == 3))
332                         continue;
333                 if (pci_resource_flags(pdev, bar) & IORESOURCE_MEM) {
334                         pm8001_ha->io_mem[logicalBar].membase =
335                                 pci_resource_start(pdev, bar);
336                         pm8001_ha->io_mem[logicalBar].membase &=
337                                 (u32)PCI_BASE_ADDRESS_MEM_MASK;
338                         pm8001_ha->io_mem[logicalBar].memsize =
339                                 pci_resource_len(pdev, bar);
340                         pm8001_ha->io_mem[logicalBar].memvirtaddr =
341                                 ioremap(pm8001_ha->io_mem[logicalBar].membase,
342                                 pm8001_ha->io_mem[logicalBar].memsize);
343                         PM8001_INIT_DBG(pm8001_ha,
344                                 pm8001_printk("PCI: bar %d, logicalBar %d "
345                                 "virt_addr=%lx,len=%d\n", bar, logicalBar,
346                                 (unsigned long)
347                                 pm8001_ha->io_mem[logicalBar].memvirtaddr,
348                                 pm8001_ha->io_mem[logicalBar].memsize));
349                 } else {
350                         pm8001_ha->io_mem[logicalBar].membase   = 0;
351                         pm8001_ha->io_mem[logicalBar].memsize   = 0;
352                         pm8001_ha->io_mem[logicalBar].memvirtaddr = 0;
353                 }
354                 logicalBar++;
355         }
356         return 0;
357 }
358
359 /**
360  * pm8001_pci_alloc - initialize our ha card structure
361  * @pdev: pci device.
362  * @ent: ent
363  * @shost: scsi host struct which has been initialized before.
364  */
365 static struct pm8001_hba_info *__devinit
366 pm8001_pci_alloc(struct pci_dev *pdev, u32 chip_id, struct Scsi_Host *shost)
367 {
368         struct pm8001_hba_info *pm8001_ha;
369         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
370
371
372         pm8001_ha = sha->lldd_ha;
373         if (!pm8001_ha)
374                 return NULL;
375
376         pm8001_ha->pdev = pdev;
377         pm8001_ha->dev = &pdev->dev;
378         pm8001_ha->chip_id = chip_id;
379         pm8001_ha->chip = &pm8001_chips[pm8001_ha->chip_id];
380         pm8001_ha->irq = pdev->irq;
381         pm8001_ha->sas = sha;
382         pm8001_ha->shost = shost;
383         pm8001_ha->id = pm8001_id++;
384         pm8001_ha->logging_level = 0x01;
385         sprintf(pm8001_ha->name, "%s%d", DRV_NAME, pm8001_ha->id);
386 #ifdef PM8001_USE_TASKLET
387         tasklet_init(&pm8001_ha->tasklet, pm8001_tasklet,
388                 (unsigned long)pm8001_ha);
389 #endif
390         pm8001_ioremap(pm8001_ha);
391         if (!pm8001_alloc(pm8001_ha))
392                 return pm8001_ha;
393         pm8001_free(pm8001_ha);
394         return NULL;
395 }
396
397 /**
398  * pci_go_44 - pm8001 specified, its DMA is 44 bit rather than 64 bit
399  * @pdev: pci device.
400  */
401 static int pci_go_44(struct pci_dev *pdev)
402 {
403         int rc;
404
405         if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(44))) {
406                 rc = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(44));
407                 if (rc) {
408                         rc = pci_set_consistent_dma_mask(pdev,
409                                 DMA_BIT_MASK(32));
410                         if (rc) {
411                                 dev_printk(KERN_ERR, &pdev->dev,
412                                         "44-bit DMA enable failed\n");
413                                 return rc;
414                         }
415                 }
416         } else {
417                 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
418                 if (rc) {
419                         dev_printk(KERN_ERR, &pdev->dev,
420                                 "32-bit DMA enable failed\n");
421                         return rc;
422                 }
423                 rc = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
424                 if (rc) {
425                         dev_printk(KERN_ERR, &pdev->dev,
426                                 "32-bit consistent DMA enable failed\n");
427                         return rc;
428                 }
429         }
430         return rc;
431 }
432
433 /**
434  * pm8001_prep_sas_ha_init - allocate memory in general hba struct && init them.
435  * @shost: scsi host which has been allocated outside.
436  * @chip_info: our ha struct.
437  */
438 static int __devinit pm8001_prep_sas_ha_init(struct Scsi_Host * shost,
439         const struct pm8001_chip_info *chip_info)
440 {
441         int phy_nr, port_nr;
442         struct asd_sas_phy **arr_phy;
443         struct asd_sas_port **arr_port;
444         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
445
446         phy_nr = chip_info->n_phy;
447         port_nr = phy_nr;
448         memset(sha, 0x00, sizeof(*sha));
449         arr_phy = kcalloc(phy_nr, sizeof(void *), GFP_KERNEL);
450         if (!arr_phy)
451                 goto exit;
452         arr_port = kcalloc(port_nr, sizeof(void *), GFP_KERNEL);
453         if (!arr_port)
454                 goto exit_free2;
455
456         sha->sas_phy = arr_phy;
457         sha->sas_port = arr_port;
458         sha->lldd_ha = kzalloc(sizeof(struct pm8001_hba_info), GFP_KERNEL);
459         if (!sha->lldd_ha)
460                 goto exit_free1;
461
462         shost->transportt = pm8001_stt;
463         shost->max_id = PM8001_MAX_DEVICES;
464         shost->max_lun = 8;
465         shost->max_channel = 0;
466         shost->unique_id = pm8001_id;
467         shost->max_cmd_len = 16;
468         shost->can_queue = PM8001_CAN_QUEUE;
469         shost->cmd_per_lun = 32;
470         return 0;
471 exit_free1:
472         kfree(arr_port);
473 exit_free2:
474         kfree(arr_phy);
475 exit:
476         return -1;
477 }
478
479 /**
480  * pm8001_post_sas_ha_init - initialize general hba struct defined in libsas
481  * @shost: scsi host which has been allocated outside
482  * @chip_info: our ha struct.
483  */
484 static void  __devinit pm8001_post_sas_ha_init(struct Scsi_Host *shost,
485         const struct pm8001_chip_info *chip_info)
486 {
487         int i = 0;
488         struct pm8001_hba_info *pm8001_ha;
489         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
490
491         pm8001_ha = sha->lldd_ha;
492         for (i = 0; i < chip_info->n_phy; i++) {
493                 sha->sas_phy[i] = &pm8001_ha->phy[i].sas_phy;
494                 sha->sas_port[i] = &pm8001_ha->port[i].sas_port;
495         }
496         sha->sas_ha_name = DRV_NAME;
497         sha->dev = pm8001_ha->dev;
498
499         sha->lldd_module = THIS_MODULE;
500         sha->sas_addr = &pm8001_ha->sas_addr[0];
501         sha->num_phys = chip_info->n_phy;
502         sha->lldd_max_execute_num = 1;
503         sha->lldd_queue_size = PM8001_CAN_QUEUE;
504         sha->core.shost = shost;
505 }
506
507 /**
508  * pm8001_init_sas_add - initialize sas address
509  * @chip_info: our ha struct.
510  *
511  * Currently we just set the fixed SAS address to our HBA,for manufacture,
512  * it should read from the EEPROM
513  */
514 static void pm8001_init_sas_add(struct pm8001_hba_info *pm8001_ha)
515 {
516         u8 i;
517 #ifdef PM8001_READ_VPD
518         DECLARE_COMPLETION_ONSTACK(completion);
519         struct pm8001_ioctl_payload payload;
520         pm8001_ha->nvmd_completion = &completion;
521         payload.minor_function = 0;
522         payload.length = 128;
523         payload.func_specific = kzalloc(128, GFP_KERNEL);
524         PM8001_CHIP_DISP->get_nvmd_req(pm8001_ha, &payload);
525         wait_for_completion(&completion);
526         for (i = 0; i < pm8001_ha->chip->n_phy; i++) {
527                 memcpy(&pm8001_ha->phy[i].dev_sas_addr, pm8001_ha->sas_addr,
528                         SAS_ADDR_SIZE);
529                 PM8001_INIT_DBG(pm8001_ha,
530                         pm8001_printk("phy %d sas_addr = %016llx \n", i,
531                         pm8001_ha->phy[i].dev_sas_addr));
532         }
533 #else
534         for (i = 0; i < pm8001_ha->chip->n_phy; i++) {
535                 pm8001_ha->phy[i].dev_sas_addr = 0x50010c600047f9d0ULL;
536                 pm8001_ha->phy[i].dev_sas_addr =
537                         cpu_to_be64((u64)
538                                 (*(u64 *)&pm8001_ha->phy[i].dev_sas_addr));
539         }
540         memcpy(pm8001_ha->sas_addr, &pm8001_ha->phy[0].dev_sas_addr,
541                 SAS_ADDR_SIZE);
542 #endif
543 }
544
545 #ifdef PM8001_USE_MSIX
546 /**
547  * pm8001_setup_msix - enable MSI-X interrupt
548  * @chip_info: our ha struct.
549  * @irq_handler: irq_handler
550  */
551 static u32 pm8001_setup_msix(struct pm8001_hba_info *pm8001_ha,
552         irq_handler_t irq_handler)
553 {
554         u32 i = 0, j = 0;
555         u32 number_of_intr = 1;
556         int flag = 0;
557         u32 max_entry;
558         int rc;
559         max_entry = sizeof(pm8001_ha->msix_entries) /
560                 sizeof(pm8001_ha->msix_entries[0]);
561         flag |= IRQF_DISABLED;
562         for (i = 0; i < max_entry ; i++)
563                 pm8001_ha->msix_entries[i].entry = i;
564         rc = pci_enable_msix(pm8001_ha->pdev, pm8001_ha->msix_entries,
565                 number_of_intr);
566         pm8001_ha->number_of_intr = number_of_intr;
567         if (!rc) {
568                 for (i = 0; i < number_of_intr; i++) {
569                         if (request_irq(pm8001_ha->msix_entries[i].vector,
570                                 irq_handler, flag, DRV_NAME,
571                                 SHOST_TO_SAS_HA(pm8001_ha->shost))) {
572                                 for (j = 0; j < i; j++)
573                                         free_irq(
574                                         pm8001_ha->msix_entries[j].vector,
575                                         SHOST_TO_SAS_HA(pm8001_ha->shost));
576                                 pci_disable_msix(pm8001_ha->pdev);
577                                 break;
578                         }
579                 }
580         }
581         return rc;
582 }
583 #endif
584
585 /**
586  * pm8001_request_irq - register interrupt
587  * @chip_info: our ha struct.
588  */
589 static u32 pm8001_request_irq(struct pm8001_hba_info *pm8001_ha)
590 {
591         struct pci_dev *pdev;
592         irq_handler_t irq_handler = pm8001_interrupt;
593         int rc;
594
595         pdev = pm8001_ha->pdev;
596
597 #ifdef PM8001_USE_MSIX
598         if (pci_find_capability(pdev, PCI_CAP_ID_MSIX))
599                 return pm8001_setup_msix(pm8001_ha, irq_handler);
600         else
601                 goto intx;
602 #endif
603
604 intx:
605         /* initialize the INT-X interrupt */
606         rc = request_irq(pdev->irq, irq_handler, IRQF_SHARED, DRV_NAME,
607                 SHOST_TO_SAS_HA(pm8001_ha->shost));
608         return rc;
609 }
610
611 /**
612  * pm8001_pci_probe - probe supported device
613  * @pdev: pci device which kernel has been prepared for.
614  * @ent: pci device id
615  *
616  * This function is the main initialization function, when register a new
617  * pci driver it is invoked, all struct an hardware initilization should be done
618  * here, also, register interrupt
619  */
620 static int __devinit pm8001_pci_probe(struct pci_dev *pdev,
621         const struct pci_device_id *ent)
622 {
623         unsigned int rc;
624         u32     pci_reg;
625         struct pm8001_hba_info *pm8001_ha;
626         struct Scsi_Host *shost = NULL;
627         const struct pm8001_chip_info *chip;
628
629         dev_printk(KERN_INFO, &pdev->dev,
630                 "pm8001: driver version %s\n", DRV_VERSION);
631         rc = pci_enable_device(pdev);
632         if (rc)
633                 goto err_out_enable;
634         pci_set_master(pdev);
635         /*
636          * Enable pci slot busmaster by setting pci command register.
637          * This is required by FW for Cyclone card.
638          */
639
640         pci_read_config_dword(pdev, PCI_COMMAND, &pci_reg);
641         pci_reg |= 0x157;
642         pci_write_config_dword(pdev, PCI_COMMAND, pci_reg);
643         rc = pci_request_regions(pdev, DRV_NAME);
644         if (rc)
645                 goto err_out_disable;
646         rc = pci_go_44(pdev);
647         if (rc)
648                 goto err_out_regions;
649
650         shost = scsi_host_alloc(&pm8001_sht, sizeof(void *));
651         if (!shost) {
652                 rc = -ENOMEM;
653                 goto err_out_regions;
654         }
655         chip = &pm8001_chips[ent->driver_data];
656         SHOST_TO_SAS_HA(shost) =
657                 kzalloc(sizeof(struct sas_ha_struct), GFP_KERNEL);
658         if (!SHOST_TO_SAS_HA(shost)) {
659                 rc = -ENOMEM;
660                 goto err_out_free_host;
661         }
662
663         rc = pm8001_prep_sas_ha_init(shost, chip);
664         if (rc) {
665                 rc = -ENOMEM;
666                 goto err_out_free;
667         }
668         pci_set_drvdata(pdev, SHOST_TO_SAS_HA(shost));
669         pm8001_ha = pm8001_pci_alloc(pdev, chip_8001, shost);
670         if (!pm8001_ha) {
671                 rc = -ENOMEM;
672                 goto err_out_free;
673         }
674         list_add_tail(&pm8001_ha->list, &hba_list);
675         PM8001_CHIP_DISP->chip_soft_rst(pm8001_ha, 0x252acbcd);
676         rc = PM8001_CHIP_DISP->chip_init(pm8001_ha);
677         if (rc)
678                 goto err_out_ha_free;
679
680         rc = scsi_add_host(shost, &pdev->dev);
681         if (rc)
682                 goto err_out_ha_free;
683         rc = pm8001_request_irq(pm8001_ha);
684         if (rc)
685                 goto err_out_shost;
686
687         PM8001_CHIP_DISP->interrupt_enable(pm8001_ha);
688         pm8001_init_sas_add(pm8001_ha);
689         pm8001_post_sas_ha_init(shost, chip);
690         rc = sas_register_ha(SHOST_TO_SAS_HA(shost));
691         if (rc)
692                 goto err_out_shost;
693         scsi_scan_host(pm8001_ha->shost);
694         return 0;
695
696 err_out_shost:
697         scsi_remove_host(pm8001_ha->shost);
698 err_out_ha_free:
699         pm8001_free(pm8001_ha);
700 err_out_free:
701         kfree(SHOST_TO_SAS_HA(shost));
702 err_out_free_host:
703         kfree(shost);
704 err_out_regions:
705         pci_release_regions(pdev);
706 err_out_disable:
707         pci_disable_device(pdev);
708 err_out_enable:
709         return rc;
710 }
711
712 static void __devexit pm8001_pci_remove(struct pci_dev *pdev)
713 {
714         struct sas_ha_struct *sha = pci_get_drvdata(pdev);
715         struct pm8001_hba_info *pm8001_ha;
716         int i;
717         pm8001_ha = sha->lldd_ha;
718         pci_set_drvdata(pdev, NULL);
719         sas_unregister_ha(sha);
720         sas_remove_host(pm8001_ha->shost);
721         list_del(&pm8001_ha->list);
722         scsi_remove_host(pm8001_ha->shost);
723         PM8001_CHIP_DISP->interrupt_disable(pm8001_ha);
724         PM8001_CHIP_DISP->chip_soft_rst(pm8001_ha, 0x252acbcd);
725
726 #ifdef PM8001_USE_MSIX
727         for (i = 0; i < pm8001_ha->number_of_intr; i++)
728                 synchronize_irq(pm8001_ha->msix_entries[i].vector);
729         for (i = 0; i < pm8001_ha->number_of_intr; i++)
730                 free_irq(pm8001_ha->msix_entries[i].vector, sha);
731         pci_disable_msix(pdev);
732 #else
733         free_irq(pm8001_ha->irq, sha);
734 #endif
735 #ifdef PM8001_USE_TASKLET
736         tasklet_kill(&pm8001_ha->tasklet);
737 #endif
738         pm8001_free(pm8001_ha);
739         kfree(sha->sas_phy);
740         kfree(sha->sas_port);
741         kfree(sha);
742         pci_release_regions(pdev);
743         pci_disable_device(pdev);
744 }
745
746 /**
747  * pm8001_pci_suspend - power management suspend main entry point
748  * @pdev: PCI device struct
749  * @state: PM state change to (usually PCI_D3)
750  *
751  * Returns 0 success, anything else error.
752  */
753 static int pm8001_pci_suspend(struct pci_dev *pdev, pm_message_t state)
754 {
755         struct sas_ha_struct *sha = pci_get_drvdata(pdev);
756         struct pm8001_hba_info *pm8001_ha;
757         int i , pos;
758         u32 device_state;
759         pm8001_ha = sha->lldd_ha;
760         flush_workqueue(pm8001_wq);
761         scsi_block_requests(pm8001_ha->shost);
762         pos = pci_find_capability(pdev, PCI_CAP_ID_PM);
763         if (pos == 0) {
764                 printk(KERN_ERR " PCI PM not supported\n");
765                 return -ENODEV;
766         }
767         PM8001_CHIP_DISP->interrupt_disable(pm8001_ha);
768         PM8001_CHIP_DISP->chip_soft_rst(pm8001_ha, 0x252acbcd);
769 #ifdef PM8001_USE_MSIX
770         for (i = 0; i < pm8001_ha->number_of_intr; i++)
771                 synchronize_irq(pm8001_ha->msix_entries[i].vector);
772         for (i = 0; i < pm8001_ha->number_of_intr; i++)
773                 free_irq(pm8001_ha->msix_entries[i].vector, sha);
774         pci_disable_msix(pdev);
775 #else
776         free_irq(pm8001_ha->irq, sha);
777 #endif
778 #ifdef PM8001_USE_TASKLET
779         tasklet_kill(&pm8001_ha->tasklet);
780 #endif
781         device_state = pci_choose_state(pdev, state);
782         pm8001_printk("pdev=0x%p, slot=%s, entering "
783                       "operating state [D%d]\n", pdev,
784                       pm8001_ha->name, device_state);
785         pci_save_state(pdev);
786         pci_disable_device(pdev);
787         pci_set_power_state(pdev, device_state);
788         return 0;
789 }
790
791 /**
792  * pm8001_pci_resume - power management resume main entry point
793  * @pdev: PCI device struct
794  *
795  * Returns 0 success, anything else error.
796  */
797 static int pm8001_pci_resume(struct pci_dev *pdev)
798 {
799         struct sas_ha_struct *sha = pci_get_drvdata(pdev);
800         struct pm8001_hba_info *pm8001_ha;
801         int rc;
802         u32 device_state;
803         pm8001_ha = sha->lldd_ha;
804         device_state = pdev->current_state;
805
806         pm8001_printk("pdev=0x%p, slot=%s, resuming from previous "
807                 "operating state [D%d]\n", pdev, pm8001_ha->name, device_state);
808
809         pci_set_power_state(pdev, PCI_D0);
810         pci_enable_wake(pdev, PCI_D0, 0);
811         pci_restore_state(pdev);
812         rc = pci_enable_device(pdev);
813         if (rc) {
814                 pm8001_printk("slot=%s Enable device failed during resume\n",
815                               pm8001_ha->name);
816                 goto err_out_enable;
817         }
818
819         pci_set_master(pdev);
820         rc = pci_go_44(pdev);
821         if (rc)
822                 goto err_out_disable;
823
824         PM8001_CHIP_DISP->chip_soft_rst(pm8001_ha, 0x252acbcd);
825         rc = PM8001_CHIP_DISP->chip_init(pm8001_ha);
826         if (rc)
827                 goto err_out_disable;
828         PM8001_CHIP_DISP->interrupt_disable(pm8001_ha);
829         rc = pm8001_request_irq(pm8001_ha);
830         if (rc)
831                 goto err_out_disable;
832         #ifdef PM8001_USE_TASKLET
833         tasklet_init(&pm8001_ha->tasklet, pm8001_tasklet,
834                     (unsigned long)pm8001_ha);
835         #endif
836         PM8001_CHIP_DISP->interrupt_enable(pm8001_ha);
837         scsi_unblock_requests(pm8001_ha->shost);
838         return 0;
839
840 err_out_disable:
841         scsi_remove_host(pm8001_ha->shost);
842         pci_disable_device(pdev);
843 err_out_enable:
844         return rc;
845 }
846
847 static struct pci_device_id __devinitdata pm8001_pci_table[] = {
848         {
849                 PCI_VDEVICE(PMC_Sierra, 0x8001), chip_8001
850         },
851         {
852                 PCI_DEVICE(0x117c, 0x0042),
853                 .driver_data = chip_8001
854         },
855         {} /* terminate list */
856 };
857
858 static struct pci_driver pm8001_pci_driver = {
859         .name           = DRV_NAME,
860         .id_table       = pm8001_pci_table,
861         .probe          = pm8001_pci_probe,
862         .remove         = __devexit_p(pm8001_pci_remove),
863         .suspend        = pm8001_pci_suspend,
864         .resume         = pm8001_pci_resume,
865 };
866
867 /**
868  *      pm8001_init - initialize scsi transport template
869  */
870 static int __init pm8001_init(void)
871 {
872         int rc = -ENOMEM;
873
874         pm8001_wq = alloc_workqueue("pm8001", 0, 0);
875         if (!pm8001_wq)
876                 goto err;
877
878         pm8001_id = 0;
879         pm8001_stt = sas_domain_attach_transport(&pm8001_transport_ops);
880         if (!pm8001_stt)
881                 goto err_wq;
882         rc = pci_register_driver(&pm8001_pci_driver);
883         if (rc)
884                 goto err_tp;
885         return 0;
886
887 err_tp:
888         sas_release_transport(pm8001_stt);
889 err_wq:
890         destroy_workqueue(pm8001_wq);
891 err:
892         return rc;
893 }
894
895 static void __exit pm8001_exit(void)
896 {
897         pci_unregister_driver(&pm8001_pci_driver);
898         sas_release_transport(pm8001_stt);
899         destroy_workqueue(pm8001_wq);
900 }
901
902 module_init(pm8001_init);
903 module_exit(pm8001_exit);
904
905 MODULE_AUTHOR("Jack Wang <jack_wang@usish.com>");
906 MODULE_DESCRIPTION("PMC-Sierra PM8001 SAS/SATA controller driver");
907 MODULE_VERSION(DRV_VERSION);
908 MODULE_LICENSE("GPL");
909 MODULE_DEVICE_TABLE(pci, pm8001_pci_table);
910