?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
Linux 4.18.10
[linux/fpc-iii.git] / drivers / scsi / mvumi.c
blobb3cd9a6b1d306a34314489f4b5e4cb5f063b03f0
1 /*
2 * Marvell UMI driver
3 *
4 * Copyright 2011 Marvell. <jyli@marvell.com>
5 *
6 * This file is licensed under GPLv2.
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; version 2 of the
11 * License.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
21 * USA
22 */
23
24 #include <linux/kernel.h>
25 #include <linux/module.h>
26 #include <linux/moduleparam.h>
27 #include <linux/init.h>
28 #include <linux/device.h>
29 #include <linux/pci.h>
30 #include <linux/list.h>
31 #include <linux/spinlock.h>
32 #include <linux/interrupt.h>
33 #include <linux/delay.h>
34 #include <linux/ktime.h>
35 #include <linux/blkdev.h>
36 #include <linux/io.h>
37 #include <scsi/scsi.h>
38 #include <scsi/scsi_cmnd.h>
39 #include <scsi/scsi_device.h>
40 #include <scsi/scsi_host.h>
41 #include <scsi/scsi_transport.h>
42 #include <scsi/scsi_eh.h>
43 #include <linux/uaccess.h>
44 #include <linux/kthread.h>
45
46 #include "mvumi.h"
47
48 MODULE_LICENSE("GPL");
49 MODULE_AUTHOR("jyli@marvell.com");
50 MODULE_DESCRIPTION("Marvell UMI Driver");
51
52 static const struct pci_device_id mvumi_pci_table[] = {
53 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL_EXT, PCI_DEVICE_ID_MARVELL_MV9143) },
54 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL_EXT, PCI_DEVICE_ID_MARVELL_MV9580) },
55 { 0 }
56 };
57
58 MODULE_DEVICE_TABLE(pci, mvumi_pci_table);
59
60 static void tag_init(struct mvumi_tag *st, unsigned short size)
61 {
62 unsigned short i;
63 BUG_ON(size != st->size);
64 st->top = size;
65 for (i = 0; i < size; i++)
66 st->stack[i] = size - 1 - i;
67 }
68
69 static unsigned short tag_get_one(struct mvumi_hba *mhba, struct mvumi_tag *st)
70 {
71 BUG_ON(st->top <= 0);
72 return st->stack[--st->top];
73 }
74
75 static void tag_release_one(struct mvumi_hba *mhba, struct mvumi_tag *st,
76 unsigned short tag)
77 {
78 BUG_ON(st->top >= st->size);
79 st->stack[st->top++] = tag;
80 }
81
82 static bool tag_is_empty(struct mvumi_tag *st)
83 {
84 if (st->top == 0)
85 return 1;
86 else
87 return 0;
88 }
89
90 static void mvumi_unmap_pci_addr(struct pci_dev *dev, void **addr_array)
91 {
92 int i;
93
94 for (i = 0; i < MAX_BASE_ADDRESS; i++)
95 if ((pci_resource_flags(dev, i) & IORESOURCE_MEM) &&
96 addr_array[i])
97 pci_iounmap(dev, addr_array[i]);
98 }
99
100 static int mvumi_map_pci_addr(struct pci_dev *dev, void **addr_array)
101 {
102 int i;
103
104 for (i = 0; i < MAX_BASE_ADDRESS; i++) {
105 if (pci_resource_flags(dev, i) & IORESOURCE_MEM) {
106 addr_array[i] = pci_iomap(dev, i, 0);
107 if (!addr_array[i]) {
108 dev_err(&dev->dev, "failed to map Bar[%d]\n",
109 i);
110 mvumi_unmap_pci_addr(dev, addr_array);
111 return -ENOMEM;
112 }
113 } else
114 addr_array[i] = NULL;
115
116 dev_dbg(&dev->dev, "Bar %d : %p.\n", i, addr_array[i]);
117 }
118
119 return 0;
120 }
121
122 static struct mvumi_res *mvumi_alloc_mem_resource(struct mvumi_hba *mhba,
123 enum resource_type type, unsigned int size)
124 {
125 struct mvumi_res *res = kzalloc(sizeof(*res), GFP_ATOMIC);
126
127 if (!res) {
128 dev_err(&mhba->pdev->dev,
129 "Failed to allocate memory for resource manager.\n");
130 return NULL;
131 }
132
133 switch (type) {
134 case RESOURCE_CACHED_MEMORY:
135 res->virt_addr = kzalloc(size, GFP_ATOMIC);
136 if (!res->virt_addr) {
137 dev_err(&mhba->pdev->dev,
138 "unable to allocate memory,size = %d.\n", size);
139 kfree(res);
140 return NULL;
141 }
142 break;
143
144 case RESOURCE_UNCACHED_MEMORY:
145 size = round_up(size, 8);
146 res->virt_addr = pci_zalloc_consistent(mhba->pdev, size,
147 &res->bus_addr);
148 if (!res->virt_addr) {
149 dev_err(&mhba->pdev->dev,
150 "unable to allocate consistent mem,"
151 "size = %d.\n", size);
152 kfree(res);
153 return NULL;
154 }
155 break;
156
157 default:
158 dev_err(&mhba->pdev->dev, "unknown resource type %d.\n", type);
159 kfree(res);
160 return NULL;
161 }
162
163 res->type = type;
164 res->size = size;
165 INIT_LIST_HEAD(&res->entry);
166 list_add_tail(&res->entry, &mhba->res_list);
167
168 return res;
169 }
170
171 static void mvumi_release_mem_resource(struct mvumi_hba *mhba)
172 {
173 struct mvumi_res *res, *tmp;
174
175 list_for_each_entry_safe(res, tmp, &mhba->res_list, entry) {
176 switch (res->type) {
177 case RESOURCE_UNCACHED_MEMORY:
178 pci_free_consistent(mhba->pdev, res->size,
179 res->virt_addr, res->bus_addr);
180 break;
181 case RESOURCE_CACHED_MEMORY:
182 kfree(res->virt_addr);
183 break;
184 default:
185 dev_err(&mhba->pdev->dev,
186 "unknown resource type %d\n", res->type);
187 break;
188 }
189 list_del(&res->entry);
190 kfree(res);
191 }
192 mhba->fw_flag &= ~MVUMI_FW_ALLOC;
193 }
194
195 /**
196 * mvumi_make_sgl - Prepares SGL
197 * @mhba: Adapter soft state
198 * @scmd: SCSI command from the mid-layer
199 * @sgl_p: SGL to be filled in
200 * @sg_count return the number of SG elements
201 *
202 * If successful, this function returns 0. otherwise, it returns -1.
203 */
204 static int mvumi_make_sgl(struct mvumi_hba *mhba, struct scsi_cmnd *scmd,
205 void *sgl_p, unsigned char *sg_count)
206 {
207 struct scatterlist *sg;
208 struct mvumi_sgl *m_sg = (struct mvumi_sgl *) sgl_p;
209 unsigned int i;
210 unsigned int sgnum = scsi_sg_count(scmd);
211 dma_addr_t busaddr;
212
213 sg = scsi_sglist(scmd);
214 *sg_count = pci_map_sg(mhba->pdev, sg, sgnum,
215 (int) scmd->sc_data_direction);
216 if (*sg_count > mhba->max_sge) {
217 dev_err(&mhba->pdev->dev,
218 "sg count[0x%x] is bigger than max sg[0x%x].\n",
219 *sg_count, mhba->max_sge);
220 pci_unmap_sg(mhba->pdev, sg, sgnum,
221 (int) scmd->sc_data_direction);
222 return -1;
223 }
224 for (i = 0; i < *sg_count; i++) {
225 busaddr = sg_dma_address(&sg[i]);
226 m_sg->baseaddr_l = cpu_to_le32(lower_32_bits(busaddr));
227 m_sg->baseaddr_h = cpu_to_le32(upper_32_bits(busaddr));
228 m_sg->flags = 0;
229 sgd_setsz(mhba, m_sg, cpu_to_le32(sg_dma_len(&sg[i])));
230 if ((i + 1) == *sg_count)
231 m_sg->flags |= 1U << mhba->eot_flag;
232
233 sgd_inc(mhba, m_sg);
234 }
235
236 return 0;
237 }
238
239 static int mvumi_internal_cmd_sgl(struct mvumi_hba *mhba, struct mvumi_cmd *cmd,
240 unsigned int size)
241 {
242 struct mvumi_sgl *m_sg;
243 void *virt_addr;
244 dma_addr_t phy_addr;
245
246 if (size == 0)
247 return 0;
248
249 virt_addr = pci_zalloc_consistent(mhba->pdev, size, &phy_addr);
250 if (!virt_addr)
251 return -1;
252
253 m_sg = (struct mvumi_sgl *) &cmd->frame->payload[0];
254 cmd->frame->sg_counts = 1;
255 cmd->data_buf = virt_addr;
256
257 m_sg->baseaddr_l = cpu_to_le32(lower_32_bits(phy_addr));
258 m_sg->baseaddr_h = cpu_to_le32(upper_32_bits(phy_addr));
259 m_sg->flags = 1U << mhba->eot_flag;
260 sgd_setsz(mhba, m_sg, cpu_to_le32(size));
261
262 return 0;
263 }
264
265 static struct mvumi_cmd *mvumi_create_internal_cmd(struct mvumi_hba *mhba,
266 unsigned int buf_size)
267 {
268 struct mvumi_cmd *cmd;
269
270 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
271 if (!cmd) {
272 dev_err(&mhba->pdev->dev, "failed to create a internal cmd\n");
273 return NULL;
274 }
275 INIT_LIST_HEAD(&cmd->queue_pointer);
276
277 cmd->frame = pci_alloc_consistent(mhba->pdev,
278 mhba->ib_max_size, &cmd->frame_phys);
279 if (!cmd->frame) {
280 dev_err(&mhba->pdev->dev, "failed to allocate memory for FW"
281 " frame,size = %d.\n", mhba->ib_max_size);
282 kfree(cmd);
283 return NULL;
284 }
285
286 if (buf_size) {
287 if (mvumi_internal_cmd_sgl(mhba, cmd, buf_size)) {
288 dev_err(&mhba->pdev->dev, "failed to allocate memory"
289 " for internal frame\n");
290 pci_free_consistent(mhba->pdev, mhba->ib_max_size,
291 cmd->frame, cmd->frame_phys);
292 kfree(cmd);
293 return NULL;
294 }
295 } else
296 cmd->frame->sg_counts = 0;
297
298 return cmd;
299 }
300
301 static void mvumi_delete_internal_cmd(struct mvumi_hba *mhba,
302 struct mvumi_cmd *cmd)
303 {
304 struct mvumi_sgl *m_sg;
305 unsigned int size;
306 dma_addr_t phy_addr;
307
308 if (cmd && cmd->frame) {
309 if (cmd->frame->sg_counts) {
310 m_sg = (struct mvumi_sgl *) &cmd->frame->payload[0];
311 sgd_getsz(mhba, m_sg, size);
312
313 phy_addr = (dma_addr_t) m_sg->baseaddr_l |
314 (dma_addr_t) ((m_sg->baseaddr_h << 16) << 16);
315
316 pci_free_consistent(mhba->pdev, size, cmd->data_buf,
317 phy_addr);
318 }
319 pci_free_consistent(mhba->pdev, mhba->ib_max_size,
320 cmd->frame, cmd->frame_phys);
321 kfree(cmd);
322 }
323 }
324
325 /**
326 * mvumi_get_cmd - Get a command from the free pool
327 * @mhba: Adapter soft state
328 *
329 * Returns a free command from the pool
330 */
331 static struct mvumi_cmd *mvumi_get_cmd(struct mvumi_hba *mhba)
332 {
333 struct mvumi_cmd *cmd = NULL;
334
335 if (likely(!list_empty(&mhba->cmd_pool))) {
336 cmd = list_entry((&mhba->cmd_pool)->next,
337 struct mvumi_cmd, queue_pointer);
338 list_del_init(&cmd->queue_pointer);
339 } else
340 dev_warn(&mhba->pdev->dev, "command pool is empty!\n");
341
342 return cmd;
343 }
344
345 /**
346 * mvumi_return_cmd - Return a cmd to free command pool
347 * @mhba: Adapter soft state
348 * @cmd: Command packet to be returned to free command pool
349 */
350 static inline void mvumi_return_cmd(struct mvumi_hba *mhba,
351 struct mvumi_cmd *cmd)
352 {
353 cmd->scmd = NULL;
354 list_add_tail(&cmd->queue_pointer, &mhba->cmd_pool);
355 }
356
357 /**
358 * mvumi_free_cmds - Free all the cmds in the free cmd pool
359 * @mhba: Adapter soft state
360 */
361 static void mvumi_free_cmds(struct mvumi_hba *mhba)
362 {
363 struct mvumi_cmd *cmd;
364
365 while (!list_empty(&mhba->cmd_pool)) {
366 cmd = list_first_entry(&mhba->cmd_pool, struct mvumi_cmd,
367 queue_pointer);
368 list_del(&cmd->queue_pointer);
369 if (!(mhba->hba_capability & HS_CAPABILITY_SUPPORT_DYN_SRC))
370 kfree(cmd->frame);
371 kfree(cmd);
372 }
373 }
374
375 /**
376 * mvumi_alloc_cmds - Allocates the command packets
377 * @mhba: Adapter soft state
378 *
379 */
380 static int mvumi_alloc_cmds(struct mvumi_hba *mhba)
381 {
382 int i;
383 struct mvumi_cmd *cmd;
384
385 for (i = 0; i < mhba->max_io; i++) {
386 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
387 if (!cmd)
388 goto err_exit;
389
390 INIT_LIST_HEAD(&cmd->queue_pointer);
391 list_add_tail(&cmd->queue_pointer, &mhba->cmd_pool);
392 if (mhba->hba_capability & HS_CAPABILITY_SUPPORT_DYN_SRC) {
393 cmd->frame = mhba->ib_frame + i * mhba->ib_max_size;
394 cmd->frame_phys = mhba->ib_frame_phys
395 + i * mhba->ib_max_size;
396 } else
397 cmd->frame = kzalloc(mhba->ib_max_size, GFP_KERNEL);
398 if (!cmd->frame)
399 goto err_exit;
400 }
401 return 0;
402
403 err_exit:
404 dev_err(&mhba->pdev->dev,
405 "failed to allocate memory for cmd[0x%x].\n", i);
406 while (!list_empty(&mhba->cmd_pool)) {
407 cmd = list_first_entry(&mhba->cmd_pool, struct mvumi_cmd,
408 queue_pointer);
409 list_del(&cmd->queue_pointer);
410 if (!(mhba->hba_capability & HS_CAPABILITY_SUPPORT_DYN_SRC))
411 kfree(cmd->frame);
412 kfree(cmd);
413 }
414 return -ENOMEM;
415 }
416
417 static unsigned int mvumi_check_ib_list_9143(struct mvumi_hba *mhba)
418 {
419 unsigned int ib_rp_reg;
420 struct mvumi_hw_regs *regs = mhba->regs;
421
422 ib_rp_reg = ioread32(mhba->regs->inb_read_pointer);
423
424 if (unlikely(((ib_rp_reg & regs->cl_slot_num_mask) ==
425 (mhba->ib_cur_slot & regs->cl_slot_num_mask)) &&
426 ((ib_rp_reg & regs->cl_pointer_toggle)
427 != (mhba->ib_cur_slot & regs->cl_pointer_toggle)))) {
428 dev_warn(&mhba->pdev->dev, "no free slot to use.\n");
429 return 0;
430 }
431 if (atomic_read(&mhba->fw_outstanding) >= mhba->max_io) {
432 dev_warn(&mhba->pdev->dev, "firmware io overflow.\n");
433 return 0;
434 } else {
435 return mhba->max_io - atomic_read(&mhba->fw_outstanding);
436 }
437 }
438
439 static unsigned int mvumi_check_ib_list_9580(struct mvumi_hba *mhba)
440 {
441 unsigned int count;
442 if (atomic_read(&mhba->fw_outstanding) >= (mhba->max_io - 1))
443 return 0;
444 count = ioread32(mhba->ib_shadow);
445 if (count == 0xffff)
446 return 0;
447 return count;
448 }
449
450 static void mvumi_get_ib_list_entry(struct mvumi_hba *mhba, void **ib_entry)
451 {
452 unsigned int cur_ib_entry;
453
454 cur_ib_entry = mhba->ib_cur_slot & mhba->regs->cl_slot_num_mask;
455 cur_ib_entry++;
456 if (cur_ib_entry >= mhba->list_num_io) {
457 cur_ib_entry -= mhba->list_num_io;
458 mhba->ib_cur_slot ^= mhba->regs->cl_pointer_toggle;
459 }
460 mhba->ib_cur_slot &= ~mhba->regs->cl_slot_num_mask;
461 mhba->ib_cur_slot |= (cur_ib_entry & mhba->regs->cl_slot_num_mask);
462 if (mhba->hba_capability & HS_CAPABILITY_SUPPORT_DYN_SRC) {
463 *ib_entry = mhba->ib_list + cur_ib_entry *
464 sizeof(struct mvumi_dyn_list_entry);
465 } else {
466 *ib_entry = mhba->ib_list + cur_ib_entry * mhba->ib_max_size;
467 }
468 atomic_inc(&mhba->fw_outstanding);
469 }
470
471 static void mvumi_send_ib_list_entry(struct mvumi_hba *mhba)
472 {
473 iowrite32(0xffff, mhba->ib_shadow);
474 iowrite32(mhba->ib_cur_slot, mhba->regs->inb_write_pointer);
475 }
476
477 static char mvumi_check_ob_frame(struct mvumi_hba *mhba,
478 unsigned int cur_obf, struct mvumi_rsp_frame *p_outb_frame)
479 {
480 unsigned short tag, request_id;
481
482 udelay(1);
483 p_outb_frame = mhba->ob_list + cur_obf * mhba->ob_max_size;
484 request_id = p_outb_frame->request_id;
485 tag = p_outb_frame->tag;
486 if (tag > mhba->tag_pool.size) {
487 dev_err(&mhba->pdev->dev, "ob frame data error\n");
488 return -1;
489 }
490 if (mhba->tag_cmd[tag] == NULL) {
491 dev_err(&mhba->pdev->dev, "tag[0x%x] with NO command\n", tag);
492 return -1;
493 } else if (mhba->tag_cmd[tag]->request_id != request_id &&
494 mhba->request_id_enabled) {
495 dev_err(&mhba->pdev->dev, "request ID from FW:0x%x,"
496 "cmd request ID:0x%x\n", request_id,
497 mhba->tag_cmd[tag]->request_id);
498 return -1;
499 }
500
501 return 0;
502 }
503
504 static int mvumi_check_ob_list_9143(struct mvumi_hba *mhba,
505 unsigned int *cur_obf, unsigned int *assign_obf_end)
506 {
507 unsigned int ob_write, ob_write_shadow;
508 struct mvumi_hw_regs *regs = mhba->regs;
509
510 do {
511 ob_write = ioread32(regs->outb_copy_pointer);
512 ob_write_shadow = ioread32(mhba->ob_shadow);
513 } while ((ob_write & regs->cl_slot_num_mask) != ob_write_shadow);
514
515 *cur_obf = mhba->ob_cur_slot & mhba->regs->cl_slot_num_mask;
516 *assign_obf_end = ob_write & mhba->regs->cl_slot_num_mask;
517
518 if ((ob_write & regs->cl_pointer_toggle) !=
519 (mhba->ob_cur_slot & regs->cl_pointer_toggle)) {
520 *assign_obf_end += mhba->list_num_io;
521 }
522 return 0;
523 }
524
525 static int mvumi_check_ob_list_9580(struct mvumi_hba *mhba,
526 unsigned int *cur_obf, unsigned int *assign_obf_end)
527 {
528 unsigned int ob_write;
529 struct mvumi_hw_regs *regs = mhba->regs;
530
531 ob_write = ioread32(regs->outb_read_pointer);
532 ob_write = ioread32(regs->outb_copy_pointer);
533 *cur_obf = mhba->ob_cur_slot & mhba->regs->cl_slot_num_mask;
534 *assign_obf_end = ob_write & mhba->regs->cl_slot_num_mask;
535 if (*assign_obf_end < *cur_obf)
536 *assign_obf_end += mhba->list_num_io;
537 else if (*assign_obf_end == *cur_obf)
538 return -1;
539 return 0;
540 }
541
542 static void mvumi_receive_ob_list_entry(struct mvumi_hba *mhba)
543 {
544 unsigned int cur_obf, assign_obf_end, i;
545 struct mvumi_ob_data *ob_data;
546 struct mvumi_rsp_frame *p_outb_frame;
547 struct mvumi_hw_regs *regs = mhba->regs;
548
549 if (mhba->instancet->check_ob_list(mhba, &cur_obf, &assign_obf_end))
550 return;
551
552 for (i = (assign_obf_end - cur_obf); i != 0; i--) {
553 cur_obf++;
554 if (cur_obf >= mhba->list_num_io) {
555 cur_obf -= mhba->list_num_io;
556 mhba->ob_cur_slot ^= regs->cl_pointer_toggle;
557 }
558
559 p_outb_frame = mhba->ob_list + cur_obf * mhba->ob_max_size;
560
561 /* Copy pointer may point to entry in outbound list
562 * before entry has valid data
563 */
564 if (unlikely(p_outb_frame->tag > mhba->tag_pool.size ||
565 mhba->tag_cmd[p_outb_frame->tag] == NULL ||
566 p_outb_frame->request_id !=
567 mhba->tag_cmd[p_outb_frame->tag]->request_id))
568 if (mvumi_check_ob_frame(mhba, cur_obf, p_outb_frame))
569 continue;
570
571 if (!list_empty(&mhba->ob_data_list)) {
572 ob_data = (struct mvumi_ob_data *)
573 list_first_entry(&mhba->ob_data_list,
574 struct mvumi_ob_data, list);
575 list_del_init(&ob_data->list);
576 } else {
577 ob_data = NULL;
578 if (cur_obf == 0) {
579 cur_obf = mhba->list_num_io - 1;
580 mhba->ob_cur_slot ^= regs->cl_pointer_toggle;
581 } else
582 cur_obf -= 1;
583 break;
584 }
585
586 memcpy(ob_data->data, p_outb_frame, mhba->ob_max_size);
587 p_outb_frame->tag = 0xff;
588
589 list_add_tail(&ob_data->list, &mhba->free_ob_list);
590 }
591 mhba->ob_cur_slot &= ~regs->cl_slot_num_mask;
592 mhba->ob_cur_slot |= (cur_obf & regs->cl_slot_num_mask);
593 iowrite32(mhba->ob_cur_slot, regs->outb_read_pointer);
594 }
595
596 static void mvumi_reset(struct mvumi_hba *mhba)
597 {
598 struct mvumi_hw_regs *regs = mhba->regs;
599
600 iowrite32(0, regs->enpointa_mask_reg);
601 if (ioread32(regs->arm_to_pciea_msg1) != HANDSHAKE_DONESTATE)
602 return;
603
604 iowrite32(DRBL_SOFT_RESET, regs->pciea_to_arm_drbl_reg);
605 }
606
607 static unsigned char mvumi_start(struct mvumi_hba *mhba);
608
609 static int mvumi_wait_for_outstanding(struct mvumi_hba *mhba)
610 {
611 mhba->fw_state = FW_STATE_ABORT;
612 mvumi_reset(mhba);
613
614 if (mvumi_start(mhba))
615 return FAILED;
616 else
617 return SUCCESS;
618 }
619
620 static int mvumi_wait_for_fw(struct mvumi_hba *mhba)
621 {
622 struct mvumi_hw_regs *regs = mhba->regs;
623 u32 tmp;
624 unsigned long before;
625 before = jiffies;
626
627 iowrite32(0, regs->enpointa_mask_reg);
628 tmp = ioread32(regs->arm_to_pciea_msg1);
629 while (tmp != HANDSHAKE_READYSTATE) {
630 iowrite32(DRBL_MU_RESET, regs->pciea_to_arm_drbl_reg);
631 if (time_after(jiffies, before + FW_MAX_DELAY * HZ)) {
632 dev_err(&mhba->pdev->dev,
633 "FW reset failed [0x%x].\n", tmp);
634 return FAILED;
635 }
636
637 msleep(500);
638 rmb();
639 tmp = ioread32(regs->arm_to_pciea_msg1);
640 }
641
642 return SUCCESS;
643 }
644
645 static void mvumi_backup_bar_addr(struct mvumi_hba *mhba)
646 {
647 unsigned char i;
648
649 for (i = 0; i < MAX_BASE_ADDRESS; i++) {
650 pci_read_config_dword(mhba->pdev, 0x10 + i * 4,
651 &mhba->pci_base[i]);
652 }
653 }
654
655 static void mvumi_restore_bar_addr(struct mvumi_hba *mhba)
656 {
657 unsigned char i;
658
659 for (i = 0; i < MAX_BASE_ADDRESS; i++) {
660 if (mhba->pci_base[i])
661 pci_write_config_dword(mhba->pdev, 0x10 + i * 4,
662 mhba->pci_base[i]);
663 }
664 }
665
666 static unsigned int mvumi_pci_set_master(struct pci_dev *pdev)
667 {
668 unsigned int ret = 0;
669 pci_set_master(pdev);
670
671 if (IS_DMA64) {
672 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)))
673 ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
674 } else
675 ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
676
677 return ret;
678 }
679
680 static int mvumi_reset_host_9580(struct mvumi_hba *mhba)
681 {
682 mhba->fw_state = FW_STATE_ABORT;
683
684 iowrite32(0, mhba->regs->reset_enable);
685 iowrite32(0xf, mhba->regs->reset_request);
686
687 iowrite32(0x10, mhba->regs->reset_enable);
688 iowrite32(0x10, mhba->regs->reset_request);
689 msleep(100);
690 pci_disable_device(mhba->pdev);
691
692 if (pci_enable_device(mhba->pdev)) {
693 dev_err(&mhba->pdev->dev, "enable device failed\n");
694 return FAILED;
695 }
696 if (mvumi_pci_set_master(mhba->pdev)) {
697 dev_err(&mhba->pdev->dev, "set master failed\n");
698 return FAILED;
699 }
700 mvumi_restore_bar_addr(mhba);
701 if (mvumi_wait_for_fw(mhba) == FAILED)
702 return FAILED;
703
704 return mvumi_wait_for_outstanding(mhba);
705 }
706
707 static int mvumi_reset_host_9143(struct mvumi_hba *mhba)
708 {
709 return mvumi_wait_for_outstanding(mhba);
710 }
711
712 static int mvumi_host_reset(struct scsi_cmnd *scmd)
713 {
714 struct mvumi_hba *mhba;
715
716 mhba = (struct mvumi_hba *) scmd->device->host->hostdata;
717
718 scmd_printk(KERN_NOTICE, scmd, "RESET -%ld cmd=%x retries=%x\n",
719 scmd->serial_number, scmd->cmnd[0], scmd->retries);
720
721 return mhba->instancet->reset_host(mhba);
722 }
723
724 static int mvumi_issue_blocked_cmd(struct mvumi_hba *mhba,
725 struct mvumi_cmd *cmd)
726 {
727 unsigned long flags;
728
729 cmd->cmd_status = REQ_STATUS_PENDING;
730
731 if (atomic_read(&cmd->sync_cmd)) {
732 dev_err(&mhba->pdev->dev,
733 "last blocked cmd not finished, sync_cmd = %d\n",
734 atomic_read(&cmd->sync_cmd));
735 BUG_ON(1);
736 return -1;
737 }
738 atomic_inc(&cmd->sync_cmd);
739 spin_lock_irqsave(mhba->shost->host_lock, flags);
740 mhba->instancet->fire_cmd(mhba, cmd);
741 spin_unlock_irqrestore(mhba->shost->host_lock, flags);
742
743 wait_event_timeout(mhba->int_cmd_wait_q,
744 (cmd->cmd_status != REQ_STATUS_PENDING),
745 MVUMI_INTERNAL_CMD_WAIT_TIME * HZ);
746
747 /* command timeout */
748 if (atomic_read(&cmd->sync_cmd)) {
749 spin_lock_irqsave(mhba->shost->host_lock, flags);
750 atomic_dec(&cmd->sync_cmd);
751 if (mhba->tag_cmd[cmd->frame->tag]) {
752 mhba->tag_cmd[cmd->frame->tag] = 0;
753 dev_warn(&mhba->pdev->dev, "TIMEOUT:release tag [%d]\n",
754 cmd->frame->tag);
755 tag_release_one(mhba, &mhba->tag_pool, cmd->frame->tag);
756 }
757 if (!list_empty(&cmd->queue_pointer)) {
758 dev_warn(&mhba->pdev->dev,
759 "TIMEOUT:A internal command doesn't send!\n");
760 list_del_init(&cmd->queue_pointer);
761 } else
762 atomic_dec(&mhba->fw_outstanding);
763
764 spin_unlock_irqrestore(mhba->shost->host_lock, flags);
765 }
766 return 0;
767 }
768
769 static void mvumi_release_fw(struct mvumi_hba *mhba)
770 {
771 mvumi_free_cmds(mhba);
772 mvumi_release_mem_resource(mhba);
773 mvumi_unmap_pci_addr(mhba->pdev, mhba->base_addr);
774 pci_free_consistent(mhba->pdev, HSP_MAX_SIZE,
775 mhba->handshake_page, mhba->handshake_page_phys);
776 kfree(mhba->regs);
777 pci_release_regions(mhba->pdev);
778 }
779
780 static unsigned char mvumi_flush_cache(struct mvumi_hba *mhba)
781 {
782 struct mvumi_cmd *cmd;
783 struct mvumi_msg_frame *frame;
784 unsigned char device_id, retry = 0;
785 unsigned char bitcount = sizeof(unsigned char) * 8;
786
787 for (device_id = 0; device_id < mhba->max_target_id; device_id++) {
788 if (!(mhba->target_map[device_id / bitcount] &
789 (1 << (device_id % bitcount))))
790 continue;
791 get_cmd: cmd = mvumi_create_internal_cmd(mhba, 0);
792 if (!cmd) {
793 if (retry++ >= 5) {
794 dev_err(&mhba->pdev->dev, "failed to get memory"
795 " for internal flush cache cmd for "
796 "device %d", device_id);
797 retry = 0;
798 continue;
799 } else
800 goto get_cmd;
801 }
802 cmd->scmd = NULL;
803 cmd->cmd_status = REQ_STATUS_PENDING;
804 atomic_set(&cmd->sync_cmd, 0);
805 frame = cmd->frame;
806 frame->req_function = CL_FUN_SCSI_CMD;
807 frame->device_id = device_id;
808 frame->cmd_flag = CMD_FLAG_NON_DATA;
809 frame->data_transfer_length = 0;
810 frame->cdb_length = MAX_COMMAND_SIZE;
811 memset(frame->cdb, 0, MAX_COMMAND_SIZE);
812 frame->cdb[0] = SCSI_CMD_MARVELL_SPECIFIC;
813 frame->cdb[1] = CDB_CORE_MODULE;
814 frame->cdb[2] = CDB_CORE_SHUTDOWN;
815
816 mvumi_issue_blocked_cmd(mhba, cmd);
817 if (cmd->cmd_status != SAM_STAT_GOOD) {
818 dev_err(&mhba->pdev->dev,
819 "device %d flush cache failed, status=0x%x.\n",
820 device_id, cmd->cmd_status);
821 }
822
823 mvumi_delete_internal_cmd(mhba, cmd);
824 }
825 return 0;
826 }
827
828 static unsigned char
829 mvumi_calculate_checksum(struct mvumi_hs_header *p_header,
830 unsigned short len)
831 {
832 unsigned char *ptr;
833 unsigned char ret = 0, i;
834
835 ptr = (unsigned char *) p_header->frame_content;
836 for (i = 0; i < len; i++) {
837 ret ^= *ptr;
838 ptr++;
839 }
840
841 return ret;
842 }
843
844 static void mvumi_hs_build_page(struct mvumi_hba *mhba,
845 struct mvumi_hs_header *hs_header)
846 {
847 struct mvumi_hs_page2 *hs_page2;
848 struct mvumi_hs_page4 *hs_page4;
849 struct mvumi_hs_page3 *hs_page3;
850 u64 time;
851 u64 local_time;
852
853 switch (hs_header->page_code) {
854 case HS_PAGE_HOST_INFO:
855 hs_page2 = (struct mvumi_hs_page2 *) hs_header;
856 hs_header->frame_length = sizeof(*hs_page2) - 4;
857 memset(hs_header->frame_content, 0, hs_header->frame_length);
858 hs_page2->host_type = 3; /* 3 mean linux*/
859 if (mhba->hba_capability & HS_CAPABILITY_SUPPORT_DYN_SRC)
860 hs_page2->host_cap = 0x08;/* host dynamic source mode */
861 hs_page2->host_ver.ver_major = VER_MAJOR;
862 hs_page2->host_ver.ver_minor = VER_MINOR;
863 hs_page2->host_ver.ver_oem = VER_OEM;
864 hs_page2->host_ver.ver_build = VER_BUILD;
865 hs_page2->system_io_bus = 0;
866 hs_page2->slot_number = 0;
867 hs_page2->intr_level = 0;
868 hs_page2->intr_vector = 0;
869 time = ktime_get_real_seconds();
870 local_time = (time - (sys_tz.tz_minuteswest * 60));
871 hs_page2->seconds_since1970 = local_time;
872 hs_header->checksum = mvumi_calculate_checksum(hs_header,
873 hs_header->frame_length);
874 break;
875
876 case HS_PAGE_FIRM_CTL:
877 hs_page3 = (struct mvumi_hs_page3 *) hs_header;
878 hs_header->frame_length = sizeof(*hs_page3) - 4;
879 memset(hs_header->frame_content, 0, hs_header->frame_length);
880 hs_header->checksum = mvumi_calculate_checksum(hs_header,
881 hs_header->frame_length);
882 break;
883
884 case HS_PAGE_CL_INFO:
885 hs_page4 = (struct mvumi_hs_page4 *) hs_header;
886 hs_header->frame_length = sizeof(*hs_page4) - 4;
887 memset(hs_header->frame_content, 0, hs_header->frame_length);
888 hs_page4->ib_baseaddr_l = lower_32_bits(mhba->ib_list_phys);
889 hs_page4->ib_baseaddr_h = upper_32_bits(mhba->ib_list_phys);
890
891 hs_page4->ob_baseaddr_l = lower_32_bits(mhba->ob_list_phys);
892 hs_page4->ob_baseaddr_h = upper_32_bits(mhba->ob_list_phys);
893 hs_page4->ib_entry_size = mhba->ib_max_size_setting;
894 hs_page4->ob_entry_size = mhba->ob_max_size_setting;
895 if (mhba->hba_capability
896 & HS_CAPABILITY_NEW_PAGE_IO_DEPTH_DEF) {
897 hs_page4->ob_depth = find_first_bit((unsigned long *)
898 &mhba->list_num_io,
899 BITS_PER_LONG);
900 hs_page4->ib_depth = find_first_bit((unsigned long *)
901 &mhba->list_num_io,
902 BITS_PER_LONG);
903 } else {
904 hs_page4->ob_depth = (u8) mhba->list_num_io;
905 hs_page4->ib_depth = (u8) mhba->list_num_io;
906 }
907 hs_header->checksum = mvumi_calculate_checksum(hs_header,
908 hs_header->frame_length);
909 break;
910
911 default:
912 dev_err(&mhba->pdev->dev, "cannot build page, code[0x%x]\n",
913 hs_header->page_code);
914 break;
915 }
916 }
917
918 /**
919 * mvumi_init_data - Initialize requested date for FW
920 * @mhba: Adapter soft state
921 */
922 static int mvumi_init_data(struct mvumi_hba *mhba)
923 {
924 struct mvumi_ob_data *ob_pool;
925 struct mvumi_res *res_mgnt;
926 unsigned int tmp_size, offset, i;
927 void *virmem, *v;
928 dma_addr_t p;
929
930 if (mhba->fw_flag & MVUMI_FW_ALLOC)
931 return 0;
932
933 tmp_size = mhba->ib_max_size * mhba->max_io;
934 if (mhba->hba_capability & HS_CAPABILITY_SUPPORT_DYN_SRC)
935 tmp_size += sizeof(struct mvumi_dyn_list_entry) * mhba->max_io;
936
937 tmp_size += 128 + mhba->ob_max_size * mhba->max_io;
938 tmp_size += 8 + sizeof(u32)*2 + 16;
939
940 res_mgnt = mvumi_alloc_mem_resource(mhba,
941 RESOURCE_UNCACHED_MEMORY, tmp_size);
942 if (!res_mgnt) {
943 dev_err(&mhba->pdev->dev,
944 "failed to allocate memory for inbound list\n");
945 goto fail_alloc_dma_buf;
946 }
947
948 p = res_mgnt->bus_addr;
949 v = res_mgnt->virt_addr;
950 /* ib_list */
951 offset = round_up(p, 128) - p;
952 p += offset;
953 v += offset;
954 mhba->ib_list = v;
955 mhba->ib_list_phys = p;
956 if (mhba->hba_capability & HS_CAPABILITY_SUPPORT_DYN_SRC) {
957 v += sizeof(struct mvumi_dyn_list_entry) * mhba->max_io;
958 p += sizeof(struct mvumi_dyn_list_entry) * mhba->max_io;
959 mhba->ib_frame = v;
960 mhba->ib_frame_phys = p;
961 }
962 v += mhba->ib_max_size * mhba->max_io;
963 p += mhba->ib_max_size * mhba->max_io;
964
965 /* ib shadow */
966 offset = round_up(p, 8) - p;
967 p += offset;
968 v += offset;
969 mhba->ib_shadow = v;
970 mhba->ib_shadow_phys = p;
971 p += sizeof(u32)*2;
972 v += sizeof(u32)*2;
973 /* ob shadow */
974 if (mhba->pdev->device == PCI_DEVICE_ID_MARVELL_MV9580) {
975 offset = round_up(p, 8) - p;
976 p += offset;
977 v += offset;
978 mhba->ob_shadow = v;
979 mhba->ob_shadow_phys = p;
980 p += 8;
981 v += 8;
982 } else {
983 offset = round_up(p, 4) - p;
984 p += offset;
985 v += offset;
986 mhba->ob_shadow = v;
987 mhba->ob_shadow_phys = p;
988 p += 4;
989 v += 4;
990 }
991
992 /* ob list */
993 offset = round_up(p, 128) - p;
994 p += offset;
995 v += offset;
996
997 mhba->ob_list = v;
998 mhba->ob_list_phys = p;
999
1000 /* ob data pool */
1001 tmp_size = mhba->max_io * (mhba->ob_max_size + sizeof(*ob_pool));
1002 tmp_size = round_up(tmp_size, 8);
1003
1004 res_mgnt = mvumi_alloc_mem_resource(mhba,
1005 RESOURCE_CACHED_MEMORY, tmp_size);
1006 if (!res_mgnt) {
1007 dev_err(&mhba->pdev->dev,
1008 "failed to allocate memory for outbound data buffer\n");
1009 goto fail_alloc_dma_buf;
1010 }
1011 virmem = res_mgnt->virt_addr;
1012
1013 for (i = mhba->max_io; i != 0; i--) {
1014 ob_pool = (struct mvumi_ob_data *) virmem;
1015 list_add_tail(&ob_pool->list, &mhba->ob_data_list);
1016 virmem += mhba->ob_max_size + sizeof(*ob_pool);
1017 }
1018
1019 tmp_size = sizeof(unsigned short) * mhba->max_io +
1020 sizeof(struct mvumi_cmd *) * mhba->max_io;
1021 tmp_size += round_up(mhba->max_target_id, sizeof(unsigned char) * 8) /
1022 (sizeof(unsigned char) * 8);
1023
1024 res_mgnt = mvumi_alloc_mem_resource(mhba,
1025 RESOURCE_CACHED_MEMORY, tmp_size);
1026 if (!res_mgnt) {
1027 dev_err(&mhba->pdev->dev,
1028 "failed to allocate memory for tag and target map\n");
1029 goto fail_alloc_dma_buf;
1030 }
1031
1032 virmem = res_mgnt->virt_addr;
1033 mhba->tag_pool.stack = virmem;
1034 mhba->tag_pool.size = mhba->max_io;
1035 tag_init(&mhba->tag_pool, mhba->max_io);
1036 virmem += sizeof(unsigned short) * mhba->max_io;
1037
1038 mhba->tag_cmd = virmem;
1039 virmem += sizeof(struct mvumi_cmd *) * mhba->max_io;
1040
1041 mhba->target_map = virmem;
1042
1043 mhba->fw_flag |= MVUMI_FW_ALLOC;
1044 return 0;
1045
1046 fail_alloc_dma_buf:
1047 mvumi_release_mem_resource(mhba);
1048 return -1;
1049 }
1050
1051 static int mvumi_hs_process_page(struct mvumi_hba *mhba,
1052 struct mvumi_hs_header *hs_header)
1053 {
1054 struct mvumi_hs_page1 *hs_page1;
1055 unsigned char page_checksum;
1056
1057 page_checksum = mvumi_calculate_checksum(hs_header,
1058 hs_header->frame_length);
1059 if (page_checksum != hs_header->checksum) {
1060 dev_err(&mhba->pdev->dev, "checksum error\n");
1061 return -1;
1062 }
1063
1064 switch (hs_header->page_code) {
1065 case HS_PAGE_FIRM_CAP:
1066 hs_page1 = (struct mvumi_hs_page1 *) hs_header;
1067
1068 mhba->max_io = hs_page1->max_io_support;
1069 mhba->list_num_io = hs_page1->cl_inout_list_depth;
1070 mhba->max_transfer_size = hs_page1->max_transfer_size;
1071 mhba->max_target_id = hs_page1->max_devices_support;
1072 mhba->hba_capability = hs_page1->capability;
1073 mhba->ib_max_size_setting = hs_page1->cl_in_max_entry_size;
1074 mhba->ib_max_size = (1 << hs_page1->cl_in_max_entry_size) << 2;
1075
1076 mhba->ob_max_size_setting = hs_page1->cl_out_max_entry_size;
1077 mhba->ob_max_size = (1 << hs_page1->cl_out_max_entry_size) << 2;
1078
1079 dev_dbg(&mhba->pdev->dev, "FW version:%d\n",
1080 hs_page1->fw_ver.ver_build);
1081
1082 if (mhba->hba_capability & HS_CAPABILITY_SUPPORT_COMPACT_SG)
1083 mhba->eot_flag = 22;
1084 else
1085 mhba->eot_flag = 27;
1086 if (mhba->hba_capability & HS_CAPABILITY_NEW_PAGE_IO_DEPTH_DEF)
1087 mhba->list_num_io = 1 << hs_page1->cl_inout_list_depth;
1088 break;
1089 default:
1090 dev_err(&mhba->pdev->dev, "handshake: page code error\n");
1091 return -1;
1092 }
1093 return 0;
1094 }
1095
1096 /**
1097 * mvumi_handshake - Move the FW to READY state
1098 * @mhba: Adapter soft state
1099 *
1100 * During the initialization, FW passes can potentially be in any one of
1101 * several possible states. If the FW in operational, waiting-for-handshake
1102 * states, driver must take steps to bring it to ready state. Otherwise, it
1103 * has to wait for the ready state.
1104 */
1105 static int mvumi_handshake(struct mvumi_hba *mhba)
1106 {
1107 unsigned int hs_state, tmp, hs_fun;
1108 struct mvumi_hs_header *hs_header;
1109 struct mvumi_hw_regs *regs = mhba->regs;
1110
1111 if (mhba->fw_state == FW_STATE_STARTING)
1112 hs_state = HS_S_START;
1113 else {
1114 tmp = ioread32(regs->arm_to_pciea_msg0);
1115 hs_state = HS_GET_STATE(tmp);
1116 dev_dbg(&mhba->pdev->dev, "handshake state[0x%x].\n", hs_state);
1117 if (HS_GET_STATUS(tmp) != HS_STATUS_OK) {
1118 mhba->fw_state = FW_STATE_STARTING;
1119 return -1;
1120 }
1121 }
1122
1123 hs_fun = 0;
1124 switch (hs_state) {
1125 case HS_S_START:
1126 mhba->fw_state = FW_STATE_HANDSHAKING;
1127 HS_SET_STATUS(hs_fun, HS_STATUS_OK);
1128 HS_SET_STATE(hs_fun, HS_S_RESET);
1129 iowrite32(HANDSHAKE_SIGNATURE, regs->pciea_to_arm_msg1);
1130 iowrite32(hs_fun, regs->pciea_to_arm_msg0);
1131 iowrite32(DRBL_HANDSHAKE, regs->pciea_to_arm_drbl_reg);
1132 break;
1133
1134 case HS_S_RESET:
1135 iowrite32(lower_32_bits(mhba->handshake_page_phys),
1136 regs->pciea_to_arm_msg1);
1137 iowrite32(upper_32_bits(mhba->handshake_page_phys),
1138 regs->arm_to_pciea_msg1);
1139 HS_SET_STATUS(hs_fun, HS_STATUS_OK);
1140 HS_SET_STATE(hs_fun, HS_S_PAGE_ADDR);
1141 iowrite32(hs_fun, regs->pciea_to_arm_msg0);
1142 iowrite32(DRBL_HANDSHAKE, regs->pciea_to_arm_drbl_reg);
1143 break;
1144
1145 case HS_S_PAGE_ADDR:
1146 case HS_S_QUERY_PAGE:
1147 case HS_S_SEND_PAGE:
1148 hs_header = (struct mvumi_hs_header *) mhba->handshake_page;
1149 if (hs_header->page_code == HS_PAGE_FIRM_CAP) {
1150 mhba->hba_total_pages =
1151 ((struct mvumi_hs_page1 *) hs_header)->total_pages;
1152
1153 if (mhba->hba_total_pages == 0)
1154 mhba->hba_total_pages = HS_PAGE_TOTAL-1;
1155 }
1156
1157 if (hs_state == HS_S_QUERY_PAGE) {
1158 if (mvumi_hs_process_page(mhba, hs_header)) {
1159 HS_SET_STATE(hs_fun, HS_S_ABORT);
1160 return -1;
1161 }
1162 if (mvumi_init_data(mhba)) {
1163 HS_SET_STATE(hs_fun, HS_S_ABORT);
1164 return -1;
1165 }
1166 } else if (hs_state == HS_S_PAGE_ADDR) {
1167 hs_header->page_code = 0;
1168 mhba->hba_total_pages = HS_PAGE_TOTAL-1;
1169 }
1170
1171 if ((hs_header->page_code + 1) <= mhba->hba_total_pages) {
1172 hs_header->page_code++;
1173 if (hs_header->page_code != HS_PAGE_FIRM_CAP) {
1174 mvumi_hs_build_page(mhba, hs_header);
1175 HS_SET_STATE(hs_fun, HS_S_SEND_PAGE);
1176 } else
1177 HS_SET_STATE(hs_fun, HS_S_QUERY_PAGE);
1178 } else
1179 HS_SET_STATE(hs_fun, HS_S_END);
1180
1181 HS_SET_STATUS(hs_fun, HS_STATUS_OK);
1182 iowrite32(hs_fun, regs->pciea_to_arm_msg0);
1183 iowrite32(DRBL_HANDSHAKE, regs->pciea_to_arm_drbl_reg);
1184 break;
1185
1186 case HS_S_END:
1187 /* Set communication list ISR */
1188 tmp = ioread32(regs->enpointa_mask_reg);
1189 tmp |= regs->int_comaout | regs->int_comaerr;
1190 iowrite32(tmp, regs->enpointa_mask_reg);
1191 iowrite32(mhba->list_num_io, mhba->ib_shadow);
1192 /* Set InBound List Available count shadow */
1193 iowrite32(lower_32_bits(mhba->ib_shadow_phys),
1194 regs->inb_aval_count_basel);
1195 iowrite32(upper_32_bits(mhba->ib_shadow_phys),
1196 regs->inb_aval_count_baseh);
1197
1198 if (mhba->pdev->device == PCI_DEVICE_ID_MARVELL_MV9143) {
1199 /* Set OutBound List Available count shadow */
1200 iowrite32((mhba->list_num_io-1) |
1201 regs->cl_pointer_toggle,
1202 mhba->ob_shadow);
1203 iowrite32(lower_32_bits(mhba->ob_shadow_phys),
1204 regs->outb_copy_basel);
1205 iowrite32(upper_32_bits(mhba->ob_shadow_phys),
1206 regs->outb_copy_baseh);
1207 }
1208
1209 mhba->ib_cur_slot = (mhba->list_num_io - 1) |
1210 regs->cl_pointer_toggle;
1211 mhba->ob_cur_slot = (mhba->list_num_io - 1) |
1212 regs->cl_pointer_toggle;
1213 mhba->fw_state = FW_STATE_STARTED;
1214
1215 break;
1216 default:
1217 dev_err(&mhba->pdev->dev, "unknown handshake state [0x%x].\n",
1218 hs_state);
1219 return -1;
1220 }
1221 return 0;
1222 }
1223
1224 static unsigned char mvumi_handshake_event(struct mvumi_hba *mhba)
1225 {
1226 unsigned int isr_status;
1227 unsigned long before;
1228
1229 before = jiffies;
1230 mvumi_handshake(mhba);
1231 do {
1232 isr_status = mhba->instancet->read_fw_status_reg(mhba);
1233
1234 if (mhba->fw_state == FW_STATE_STARTED)
1235 return 0;
1236 if (time_after(jiffies, before + FW_MAX_DELAY * HZ)) {
1237 dev_err(&mhba->pdev->dev,
1238 "no handshake response at state 0x%x.\n",
1239 mhba->fw_state);
1240 dev_err(&mhba->pdev->dev,
1241 "isr : global=0x%x,status=0x%x.\n",
1242 mhba->global_isr, isr_status);
1243 return -1;
1244 }
1245 rmb();
1246 usleep_range(1000, 2000);
1247 } while (!(isr_status & DRBL_HANDSHAKE_ISR));
1248
1249 return 0;
1250 }
1251
1252 static unsigned char mvumi_check_handshake(struct mvumi_hba *mhba)
1253 {
1254 unsigned int tmp;
1255 unsigned long before;
1256
1257 before = jiffies;
1258 tmp = ioread32(mhba->regs->arm_to_pciea_msg1);
1259 while ((tmp != HANDSHAKE_READYSTATE) && (tmp != HANDSHAKE_DONESTATE)) {
1260 if (tmp != HANDSHAKE_READYSTATE)
1261 iowrite32(DRBL_MU_RESET,
1262 mhba->regs->pciea_to_arm_drbl_reg);
1263 if (time_after(jiffies, before + FW_MAX_DELAY * HZ)) {
1264 dev_err(&mhba->pdev->dev,
1265 "invalid signature [0x%x].\n", tmp);
1266 return -1;
1267 }
1268 usleep_range(1000, 2000);
1269 rmb();
1270 tmp = ioread32(mhba->regs->arm_to_pciea_msg1);
1271 }
1272
1273 mhba->fw_state = FW_STATE_STARTING;
1274 dev_dbg(&mhba->pdev->dev, "start firmware handshake...\n");
1275 do {
1276 if (mvumi_handshake_event(mhba)) {
1277 dev_err(&mhba->pdev->dev,
1278 "handshake failed at state 0x%x.\n",
1279 mhba->fw_state);
1280 return -1;
1281 }
1282 } while (mhba->fw_state != FW_STATE_STARTED);
1283
1284 dev_dbg(&mhba->pdev->dev, "firmware handshake done\n");
1285
1286 return 0;
1287 }
1288
1289 static unsigned char mvumi_start(struct mvumi_hba *mhba)
1290 {
1291 unsigned int tmp;
1292 struct mvumi_hw_regs *regs = mhba->regs;
1293
1294 /* clear Door bell */
1295 tmp = ioread32(regs->arm_to_pciea_drbl_reg);
1296 iowrite32(tmp, regs->arm_to_pciea_drbl_reg);
1297
1298 iowrite32(regs->int_drbl_int_mask, regs->arm_to_pciea_mask_reg);
1299 tmp = ioread32(regs->enpointa_mask_reg) | regs->int_dl_cpu2pciea;
1300 iowrite32(tmp, regs->enpointa_mask_reg);
1301 msleep(100);
1302 if (mvumi_check_handshake(mhba))
1303 return -1;
1304
1305 return 0;
1306 }
1307
1308 /**
1309 * mvumi_complete_cmd - Completes a command
1310 * @mhba: Adapter soft state
1311 * @cmd: Command to be completed
1312 */
1313 static void mvumi_complete_cmd(struct mvumi_hba *mhba, struct mvumi_cmd *cmd,
1314 struct mvumi_rsp_frame *ob_frame)
1315 {
1316 struct scsi_cmnd *scmd = cmd->scmd;
1317
1318 cmd->scmd->SCp.ptr = NULL;
1319 scmd->result = ob_frame->req_status;
1320
1321 switch (ob_frame->req_status) {
1322 case SAM_STAT_GOOD:
1323 scmd->result |= DID_OK << 16;
1324 break;
1325 case SAM_STAT_BUSY:
1326 scmd->result |= DID_BUS_BUSY << 16;
1327 break;
1328 case SAM_STAT_CHECK_CONDITION:
1329 scmd->result |= (DID_OK << 16);
1330 if (ob_frame->rsp_flag & CL_RSP_FLAG_SENSEDATA) {
1331 memcpy(cmd->scmd->sense_buffer, ob_frame->payload,
1332 sizeof(struct mvumi_sense_data));
1333 scmd->result |= (DRIVER_SENSE << 24);
1334 }
1335 break;
1336 default:
1337 scmd->result |= (DRIVER_INVALID << 24) | (DID_ABORT << 16);
1338 break;
1339 }
1340
1341 if (scsi_bufflen(scmd))
1342 pci_unmap_sg(mhba->pdev, scsi_sglist(scmd),
1343 scsi_sg_count(scmd),
1344 (int) scmd->sc_data_direction);
1345 cmd->scmd->scsi_done(scmd);
1346 mvumi_return_cmd(mhba, cmd);
1347 }
1348
1349 static void mvumi_complete_internal_cmd(struct mvumi_hba *mhba,
1350 struct mvumi_cmd *cmd,
1351 struct mvumi_rsp_frame *ob_frame)
1352 {
1353 if (atomic_read(&cmd->sync_cmd)) {
1354 cmd->cmd_status = ob_frame->req_status;
1355
1356 if ((ob_frame->req_status == SAM_STAT_CHECK_CONDITION) &&
1357 (ob_frame->rsp_flag & CL_RSP_FLAG_SENSEDATA) &&
1358 cmd->data_buf) {
1359 memcpy(cmd->data_buf, ob_frame->payload,
1360 sizeof(struct mvumi_sense_data));
1361 }
1362 atomic_dec(&cmd->sync_cmd);
1363 wake_up(&mhba->int_cmd_wait_q);
1364 }
1365 }
1366
1367 static void mvumi_show_event(struct mvumi_hba *mhba,
1368 struct mvumi_driver_event *ptr)
1369 {
1370 unsigned int i;
1371
1372 dev_warn(&mhba->pdev->dev,
1373 "Event[0x%x] id[0x%x] severity[0x%x] device id[0x%x]\n",
1374 ptr->sequence_no, ptr->event_id, ptr->severity, ptr->device_id);
1375 if (ptr->param_count) {
1376 printk(KERN_WARNING "Event param(len 0x%x): ",
1377 ptr->param_count);
1378 for (i = 0; i < ptr->param_count; i++)
1379 printk(KERN_WARNING "0x%x ", ptr->params[i]);
1380
1381 printk(KERN_WARNING "\n");
1382 }
1383
1384 if (ptr->sense_data_length) {
1385 printk(KERN_WARNING "Event sense data(len 0x%x): ",
1386 ptr->sense_data_length);
1387 for (i = 0; i < ptr->sense_data_length; i++)
1388 printk(KERN_WARNING "0x%x ", ptr->sense_data[i]);
1389 printk(KERN_WARNING "\n");
1390 }
1391 }
1392
1393 static int mvumi_handle_hotplug(struct mvumi_hba *mhba, u16 devid, int status)
1394 {
1395 struct scsi_device *sdev;
1396 int ret = -1;
1397
1398 if (status == DEVICE_OFFLINE) {
1399 sdev = scsi_device_lookup(mhba->shost, 0, devid, 0);
1400 if (sdev) {
1401 dev_dbg(&mhba->pdev->dev, "remove disk %d-%d-%d.\n", 0,
1402 sdev->id, 0);
1403 scsi_remove_device(sdev);
1404 scsi_device_put(sdev);
1405 ret = 0;
1406 } else
1407 dev_err(&mhba->pdev->dev, " no disk[%d] to remove\n",
1408 devid);
1409 } else if (status == DEVICE_ONLINE) {
1410 sdev = scsi_device_lookup(mhba->shost, 0, devid, 0);
1411 if (!sdev) {
1412 scsi_add_device(mhba->shost, 0, devid, 0);
1413 dev_dbg(&mhba->pdev->dev, " add disk %d-%d-%d.\n", 0,
1414 devid, 0);
1415 ret = 0;
1416 } else {
1417 dev_err(&mhba->pdev->dev, " don't add disk %d-%d-%d.\n",
1418 0, devid, 0);
1419 scsi_device_put(sdev);
1420 }
1421 }
1422 return ret;
1423 }
1424
1425 static u64 mvumi_inquiry(struct mvumi_hba *mhba,
1426 unsigned int id, struct mvumi_cmd *cmd)
1427 {
1428 struct mvumi_msg_frame *frame;
1429 u64 wwid = 0;
1430 int cmd_alloc = 0;
1431 int data_buf_len = 64;
1432
1433 if (!cmd) {
1434 cmd = mvumi_create_internal_cmd(mhba, data_buf_len);
1435 if (cmd)
1436 cmd_alloc = 1;
1437 else
1438 return 0;
1439 } else {
1440 memset(cmd->data_buf, 0, data_buf_len);
1441 }
1442 cmd->scmd = NULL;
1443 cmd->cmd_status = REQ_STATUS_PENDING;
1444 atomic_set(&cmd->sync_cmd, 0);
1445 frame = cmd->frame;
1446 frame->device_id = (u16) id;
1447 frame->cmd_flag = CMD_FLAG_DATA_IN;
1448 frame->req_function = CL_FUN_SCSI_CMD;
1449 frame->cdb_length = 6;
1450 frame->data_transfer_length = MVUMI_INQUIRY_LENGTH;
1451 memset(frame->cdb, 0, frame->cdb_length);
1452 frame->cdb[0] = INQUIRY;
1453 frame->cdb[4] = frame->data_transfer_length;
1454
1455 mvumi_issue_blocked_cmd(mhba, cmd);
1456
1457 if (cmd->cmd_status == SAM_STAT_GOOD) {
1458 if (mhba->pdev->device == PCI_DEVICE_ID_MARVELL_MV9143)
1459 wwid = id + 1;
1460 else
1461 memcpy((void *)&wwid,
1462 (cmd->data_buf + MVUMI_INQUIRY_UUID_OFF),
1463 MVUMI_INQUIRY_UUID_LEN);
1464 dev_dbg(&mhba->pdev->dev,
1465 "inquiry device(0:%d:0) wwid(%llx)\n", id, wwid);
1466 } else {
1467 wwid = 0;
1468 }
1469 if (cmd_alloc)
1470 mvumi_delete_internal_cmd(mhba, cmd);
1471
1472 return wwid;
1473 }
1474
1475 static void mvumi_detach_devices(struct mvumi_hba *mhba)
1476 {
1477 struct mvumi_device *mv_dev = NULL , *dev_next;
1478 struct scsi_device *sdev = NULL;
1479
1480 mutex_lock(&mhba->device_lock);
1481
1482 /* detach Hard Disk */
1483 list_for_each_entry_safe(mv_dev, dev_next,
1484 &mhba->shost_dev_list, list) {
1485 mvumi_handle_hotplug(mhba, mv_dev->id, DEVICE_OFFLINE);
1486 list_del_init(&mv_dev->list);
1487 dev_dbg(&mhba->pdev->dev, "release device(0:%d:0) wwid(%llx)\n",
1488 mv_dev->id, mv_dev->wwid);
1489 kfree(mv_dev);
1490 }
1491 list_for_each_entry_safe(mv_dev, dev_next, &mhba->mhba_dev_list, list) {
1492 list_del_init(&mv_dev->list);
1493 dev_dbg(&mhba->pdev->dev, "release device(0:%d:0) wwid(%llx)\n",
1494 mv_dev->id, mv_dev->wwid);
1495 kfree(mv_dev);
1496 }
1497
1498 /* detach virtual device */
1499 if (mhba->pdev->device == PCI_DEVICE_ID_MARVELL_MV9580)
1500 sdev = scsi_device_lookup(mhba->shost, 0,
1501 mhba->max_target_id - 1, 0);
1502
1503 if (sdev) {
1504 scsi_remove_device(sdev);
1505 scsi_device_put(sdev);
1506 }
1507
1508 mutex_unlock(&mhba->device_lock);
1509 }
1510
1511 static void mvumi_rescan_devices(struct mvumi_hba *mhba, int id)
1512 {
1513 struct scsi_device *sdev;
1514
1515 sdev = scsi_device_lookup(mhba->shost, 0, id, 0);
1516 if (sdev) {
1517 scsi_rescan_device(&sdev->sdev_gendev);
1518 scsi_device_put(sdev);
1519 }
1520 }
1521
1522 static int mvumi_match_devices(struct mvumi_hba *mhba, int id, u64 wwid)
1523 {
1524 struct mvumi_device *mv_dev = NULL;
1525
1526 list_for_each_entry(mv_dev, &mhba->shost_dev_list, list) {
1527 if (mv_dev->wwid == wwid) {
1528 if (mv_dev->id != id) {
1529 dev_err(&mhba->pdev->dev,
1530 "%s has same wwid[%llx] ,"
1531 " but different id[%d %d]\n",
1532 __func__, mv_dev->wwid, mv_dev->id, id);
1533 return -1;
1534 } else {
1535 if (mhba->pdev->device ==
1536 PCI_DEVICE_ID_MARVELL_MV9143)
1537 mvumi_rescan_devices(mhba, id);
1538 return 1;
1539 }
1540 }
1541 }
1542 return 0;
1543 }
1544
1545 static void mvumi_remove_devices(struct mvumi_hba *mhba, int id)
1546 {
1547 struct mvumi_device *mv_dev = NULL, *dev_next;
1548
1549 list_for_each_entry_safe(mv_dev, dev_next,
1550 &mhba->shost_dev_list, list) {
1551 if (mv_dev->id == id) {
1552 dev_dbg(&mhba->pdev->dev,
1553 "detach device(0:%d:0) wwid(%llx) from HOST\n",
1554 mv_dev->id, mv_dev->wwid);
1555 mvumi_handle_hotplug(mhba, mv_dev->id, DEVICE_OFFLINE);
1556 list_del_init(&mv_dev->list);
1557 kfree(mv_dev);
1558 }
1559 }
1560 }
1561
1562 static int mvumi_probe_devices(struct mvumi_hba *mhba)
1563 {
1564 int id, maxid;
1565 u64 wwid = 0;
1566 struct mvumi_device *mv_dev = NULL;
1567 struct mvumi_cmd *cmd = NULL;
1568 int found = 0;
1569
1570 cmd = mvumi_create_internal_cmd(mhba, 64);
1571 if (!cmd)
1572 return -1;
1573
1574 if (mhba->pdev->device == PCI_DEVICE_ID_MARVELL_MV9143)
1575 maxid = mhba->max_target_id;
1576 else
1577 maxid = mhba->max_target_id - 1;
1578
1579 for (id = 0; id < maxid; id++) {
1580 wwid = mvumi_inquiry(mhba, id, cmd);
1581 if (!wwid) {
1582 /* device no response, remove it */
1583 mvumi_remove_devices(mhba, id);
1584 } else {
1585 /* device response, add it */
1586 found = mvumi_match_devices(mhba, id, wwid);
1587 if (!found) {
1588 mvumi_remove_devices(mhba, id);
1589 mv_dev = kzalloc(sizeof(struct mvumi_device),
1590 GFP_KERNEL);
1591 if (!mv_dev) {
1592 dev_err(&mhba->pdev->dev,
1593 "%s alloc mv_dev failed\n",
1594 __func__);
1595 continue;
1596 }
1597 mv_dev->id = id;
1598 mv_dev->wwid = wwid;
1599 mv_dev->sdev = NULL;
1600 INIT_LIST_HEAD(&mv_dev->list);
1601 list_add_tail(&mv_dev->list,
1602 &mhba->mhba_dev_list);
1603 dev_dbg(&mhba->pdev->dev,
1604 "probe a new device(0:%d:0)"
1605 " wwid(%llx)\n", id, mv_dev->wwid);
1606 } else if (found == -1)
1607 return -1;
1608 else
1609 continue;
1610 }
1611 }
1612
1613 if (cmd)
1614 mvumi_delete_internal_cmd(mhba, cmd);
1615
1616 return 0;
1617 }
1618
1619 static int mvumi_rescan_bus(void *data)
1620 {
1621 int ret = 0;
1622 struct mvumi_hba *mhba = (struct mvumi_hba *) data;
1623 struct mvumi_device *mv_dev = NULL , *dev_next;
1624
1625 while (!kthread_should_stop()) {
1626
1627 set_current_state(TASK_INTERRUPTIBLE);
1628 if (!atomic_read(&mhba->pnp_count))
1629 schedule();
1630 msleep(1000);
1631 atomic_set(&mhba->pnp_count, 0);
1632 __set_current_state(TASK_RUNNING);
1633
1634 mutex_lock(&mhba->device_lock);
1635 ret = mvumi_probe_devices(mhba);
1636 if (!ret) {
1637 list_for_each_entry_safe(mv_dev, dev_next,
1638 &mhba->mhba_dev_list, list) {
1639 if (mvumi_handle_hotplug(mhba, mv_dev->id,
1640 DEVICE_ONLINE)) {
1641 dev_err(&mhba->pdev->dev,
1642 "%s add device(0:%d:0) failed"
1643 "wwid(%llx) has exist\n",
1644 __func__,
1645 mv_dev->id, mv_dev->wwid);
1646 list_del_init(&mv_dev->list);
1647 kfree(mv_dev);
1648 } else {
1649 list_move_tail(&mv_dev->list,
1650 &mhba->shost_dev_list);
1651 }
1652 }
1653 }
1654 mutex_unlock(&mhba->device_lock);
1655 }
1656 return 0;
1657 }
1658
1659 static void mvumi_proc_msg(struct mvumi_hba *mhba,
1660 struct mvumi_hotplug_event *param)
1661 {
1662 u16 size = param->size;
1663 const unsigned long *ar_bitmap;
1664 const unsigned long *re_bitmap;
1665 int index;
1666
1667 if (mhba->fw_flag & MVUMI_FW_ATTACH) {
1668 index = -1;
1669 ar_bitmap = (const unsigned long *) param->bitmap;
1670 re_bitmap = (const unsigned long *) &param->bitmap[size >> 3];
1671
1672 mutex_lock(&mhba->sas_discovery_mutex);
1673 do {
1674 index = find_next_zero_bit(ar_bitmap, size, index + 1);
1675 if (index >= size)
1676 break;
1677 mvumi_handle_hotplug(mhba, index, DEVICE_ONLINE);
1678 } while (1);
1679
1680 index = -1;
1681 do {
1682 index = find_next_zero_bit(re_bitmap, size, index + 1);
1683 if (index >= size)
1684 break;
1685 mvumi_handle_hotplug(mhba, index, DEVICE_OFFLINE);
1686 } while (1);
1687 mutex_unlock(&mhba->sas_discovery_mutex);
1688 }
1689 }
1690
1691 static void mvumi_notification(struct mvumi_hba *mhba, u8 msg, void *buffer)
1692 {
1693 if (msg == APICDB1_EVENT_GETEVENT) {
1694 int i, count;
1695 struct mvumi_driver_event *param = NULL;
1696 struct mvumi_event_req *er = buffer;
1697 count = er->count;
1698 if (count > MAX_EVENTS_RETURNED) {
1699 dev_err(&mhba->pdev->dev, "event count[0x%x] is bigger"
1700 " than max event count[0x%x].\n",
1701 count, MAX_EVENTS_RETURNED);
1702 return;
1703 }
1704 for (i = 0; i < count; i++) {
1705 param = &er->events[i];
1706 mvumi_show_event(mhba, param);
1707 }
1708 } else if (msg == APICDB1_HOST_GETEVENT) {
1709 mvumi_proc_msg(mhba, buffer);
1710 }
1711 }
1712
1713 static int mvumi_get_event(struct mvumi_hba *mhba, unsigned char msg)
1714 {
1715 struct mvumi_cmd *cmd;
1716 struct mvumi_msg_frame *frame;
1717
1718 cmd = mvumi_create_internal_cmd(mhba, 512);
1719 if (!cmd)
1720 return -1;
1721 cmd->scmd = NULL;
1722 cmd->cmd_status = REQ_STATUS_PENDING;
1723 atomic_set(&cmd->sync_cmd, 0);
1724 frame = cmd->frame;
1725 frame->device_id = 0;
1726 frame->cmd_flag = CMD_FLAG_DATA_IN;
1727 frame->req_function = CL_FUN_SCSI_CMD;
1728 frame->cdb_length = MAX_COMMAND_SIZE;
1729 frame->data_transfer_length = sizeof(struct mvumi_event_req);
1730 memset(frame->cdb, 0, MAX_COMMAND_SIZE);
1731 frame->cdb[0] = APICDB0_EVENT;
1732 frame->cdb[1] = msg;
1733 mvumi_issue_blocked_cmd(mhba, cmd);
1734
1735 if (cmd->cmd_status != SAM_STAT_GOOD)
1736 dev_err(&mhba->pdev->dev, "get event failed, status=0x%x.\n",
1737 cmd->cmd_status);
1738 else
1739 mvumi_notification(mhba, cmd->frame->cdb[1], cmd->data_buf);
1740
1741 mvumi_delete_internal_cmd(mhba, cmd);
1742 return 0;
1743 }
1744
1745 static void mvumi_scan_events(struct work_struct *work)
1746 {
1747 struct mvumi_events_wq *mu_ev =
1748 container_of(work, struct mvumi_events_wq, work_q);
1749
1750 mvumi_get_event(mu_ev->mhba, mu_ev->event);
1751 kfree(mu_ev);
1752 }
1753
1754 static void mvumi_launch_events(struct mvumi_hba *mhba, u32 isr_status)
1755 {
1756 struct mvumi_events_wq *mu_ev;
1757
1758 while (isr_status & (DRBL_BUS_CHANGE | DRBL_EVENT_NOTIFY)) {
1759 if (isr_status & DRBL_BUS_CHANGE) {
1760 atomic_inc(&mhba->pnp_count);
1761 wake_up_process(mhba->dm_thread);
1762 isr_status &= ~(DRBL_BUS_CHANGE);
1763 continue;
1764 }
1765
1766 mu_ev = kzalloc(sizeof(*mu_ev), GFP_ATOMIC);
1767 if (mu_ev) {
1768 INIT_WORK(&mu_ev->work_q, mvumi_scan_events);
1769 mu_ev->mhba = mhba;
1770 mu_ev->event = APICDB1_EVENT_GETEVENT;
1771 isr_status &= ~(DRBL_EVENT_NOTIFY);
1772 mu_ev->param = NULL;
1773 schedule_work(&mu_ev->work_q);
1774 }
1775 }
1776 }
1777
1778 static void mvumi_handle_clob(struct mvumi_hba *mhba)
1779 {
1780 struct mvumi_rsp_frame *ob_frame;
1781 struct mvumi_cmd *cmd;
1782 struct mvumi_ob_data *pool;
1783
1784 while (!list_empty(&mhba->free_ob_list)) {
1785 pool = list_first_entry(&mhba->free_ob_list,
1786 struct mvumi_ob_data, list);
1787 list_del_init(&pool->list);
1788 list_add_tail(&pool->list, &mhba->ob_data_list);
1789
1790 ob_frame = (struct mvumi_rsp_frame *) &pool->data[0];
1791 cmd = mhba->tag_cmd[ob_frame->tag];
1792
1793 atomic_dec(&mhba->fw_outstanding);
1794 mhba->tag_cmd[ob_frame->tag] = 0;
1795 tag_release_one(mhba, &mhba->tag_pool, ob_frame->tag);
1796 if (cmd->scmd)
1797 mvumi_complete_cmd(mhba, cmd, ob_frame);
1798 else
1799 mvumi_complete_internal_cmd(mhba, cmd, ob_frame);
1800 }
1801 mhba->instancet->fire_cmd(mhba, NULL);
1802 }
1803
1804 static irqreturn_t mvumi_isr_handler(int irq, void *devp)
1805 {
1806 struct mvumi_hba *mhba = (struct mvumi_hba *) devp;
1807 unsigned long flags;
1808
1809 spin_lock_irqsave(mhba->shost->host_lock, flags);
1810 if (unlikely(mhba->instancet->clear_intr(mhba) || !mhba->global_isr)) {
1811 spin_unlock_irqrestore(mhba->shost->host_lock, flags);
1812 return IRQ_NONE;
1813 }
1814
1815 if (mhba->global_isr & mhba->regs->int_dl_cpu2pciea) {
1816 if (mhba->isr_status & (DRBL_BUS_CHANGE | DRBL_EVENT_NOTIFY))
1817 mvumi_launch_events(mhba, mhba->isr_status);
1818 if (mhba->isr_status & DRBL_HANDSHAKE_ISR) {
1819 dev_warn(&mhba->pdev->dev, "enter handshake again!\n");
1820 mvumi_handshake(mhba);
1821 }
1822
1823 }
1824
1825 if (mhba->global_isr & mhba->regs->int_comaout)
1826 mvumi_receive_ob_list_entry(mhba);
1827
1828 mhba->global_isr = 0;
1829 mhba->isr_status = 0;
1830 if (mhba->fw_state == FW_STATE_STARTED)
1831 mvumi_handle_clob(mhba);
1832 spin_unlock_irqrestore(mhba->shost->host_lock, flags);
1833 return IRQ_HANDLED;
1834 }
1835
1836 static enum mvumi_qc_result mvumi_send_command(struct mvumi_hba *mhba,
1837 struct mvumi_cmd *cmd)
1838 {
1839 void *ib_entry;
1840 struct mvumi_msg_frame *ib_frame;
1841 unsigned int frame_len;
1842
1843 ib_frame = cmd->frame;
1844 if (unlikely(mhba->fw_state != FW_STATE_STARTED)) {
1845 dev_dbg(&mhba->pdev->dev, "firmware not ready.\n");
1846 return MV_QUEUE_COMMAND_RESULT_NO_RESOURCE;
1847 }
1848 if (tag_is_empty(&mhba->tag_pool)) {
1849 dev_dbg(&mhba->pdev->dev, "no free tag.\n");
1850 return MV_QUEUE_COMMAND_RESULT_NO_RESOURCE;
1851 }
1852 mvumi_get_ib_list_entry(mhba, &ib_entry);
1853
1854 cmd->frame->tag = tag_get_one(mhba, &mhba->tag_pool);
1855 cmd->frame->request_id = mhba->io_seq++;
1856 cmd->request_id = cmd->frame->request_id;
1857 mhba->tag_cmd[cmd->frame->tag] = cmd;
1858 frame_len = sizeof(*ib_frame) - 4 +
1859 ib_frame->sg_counts * sizeof(struct mvumi_sgl);
1860 if (mhba->hba_capability & HS_CAPABILITY_SUPPORT_DYN_SRC) {
1861 struct mvumi_dyn_list_entry *dle;
1862 dle = ib_entry;
1863 dle->src_low_addr =
1864 cpu_to_le32(lower_32_bits(cmd->frame_phys));
1865 dle->src_high_addr =
1866 cpu_to_le32(upper_32_bits(cmd->frame_phys));
1867 dle->if_length = (frame_len >> 2) & 0xFFF;
1868 } else {
1869 memcpy(ib_entry, ib_frame, frame_len);
1870 }
1871 return MV_QUEUE_COMMAND_RESULT_SENT;
1872 }
1873
1874 static void mvumi_fire_cmd(struct mvumi_hba *mhba, struct mvumi_cmd *cmd)
1875 {
1876 unsigned short num_of_cl_sent = 0;
1877 unsigned int count;
1878 enum mvumi_qc_result result;
1879
1880 if (cmd)
1881 list_add_tail(&cmd->queue_pointer, &mhba->waiting_req_list);
1882 count = mhba->instancet->check_ib_list(mhba);
1883 if (list_empty(&mhba->waiting_req_list) || !count)
1884 return;
1885
1886 do {
1887 cmd = list_first_entry(&mhba->waiting_req_list,
1888 struct mvumi_cmd, queue_pointer);
1889 list_del_init(&cmd->queue_pointer);
1890 result = mvumi_send_command(mhba, cmd);
1891 switch (result) {
1892 case MV_QUEUE_COMMAND_RESULT_SENT:
1893 num_of_cl_sent++;
1894 break;
1895 case MV_QUEUE_COMMAND_RESULT_NO_RESOURCE:
1896 list_add(&cmd->queue_pointer, &mhba->waiting_req_list);
1897 if (num_of_cl_sent > 0)
1898 mvumi_send_ib_list_entry(mhba);
1899
1900 return;
1901 }
1902 } while (!list_empty(&mhba->waiting_req_list) && count--);
1903
1904 if (num_of_cl_sent > 0)
1905 mvumi_send_ib_list_entry(mhba);
1906 }
1907
1908 /**
1909 * mvumi_enable_intr - Enables interrupts
1910 * @mhba: Adapter soft state
1911 */
1912 static void mvumi_enable_intr(struct mvumi_hba *mhba)
1913 {
1914 unsigned int mask;
1915 struct mvumi_hw_regs *regs = mhba->regs;
1916
1917 iowrite32(regs->int_drbl_int_mask, regs->arm_to_pciea_mask_reg);
1918 mask = ioread32(regs->enpointa_mask_reg);
1919 mask |= regs->int_dl_cpu2pciea | regs->int_comaout | regs->int_comaerr;
1920 iowrite32(mask, regs->enpointa_mask_reg);
1921 }
1922
1923 /**
1924 * mvumi_disable_intr -Disables interrupt
1925 * @mhba: Adapter soft state
1926 */
1927 static void mvumi_disable_intr(struct mvumi_hba *mhba)
1928 {
1929 unsigned int mask;
1930 struct mvumi_hw_regs *regs = mhba->regs;
1931
1932 iowrite32(0, regs->arm_to_pciea_mask_reg);
1933 mask = ioread32(regs->enpointa_mask_reg);
1934 mask &= ~(regs->int_dl_cpu2pciea | regs->int_comaout |
1935 regs->int_comaerr);
1936 iowrite32(mask, regs->enpointa_mask_reg);
1937 }
1938
1939 static int mvumi_clear_intr(void *extend)
1940 {
1941 struct mvumi_hba *mhba = (struct mvumi_hba *) extend;
1942 unsigned int status, isr_status = 0, tmp = 0;
1943 struct mvumi_hw_regs *regs = mhba->regs;
1944
1945 status = ioread32(regs->main_int_cause_reg);
1946 if (!(status & regs->int_mu) || status == 0xFFFFFFFF)
1947 return 1;
1948 if (unlikely(status & regs->int_comaerr)) {
1949 tmp = ioread32(regs->outb_isr_cause);
1950 if (mhba->pdev->device == PCI_DEVICE_ID_MARVELL_MV9580) {
1951 if (tmp & regs->clic_out_err) {
1952 iowrite32(tmp & regs->clic_out_err,
1953 regs->outb_isr_cause);
1954 }
1955 } else {
1956 if (tmp & (regs->clic_in_err | regs->clic_out_err))
1957 iowrite32(tmp & (regs->clic_in_err |
1958 regs->clic_out_err),
1959 regs->outb_isr_cause);
1960 }
1961 status ^= mhba->regs->int_comaerr;
1962 /* inbound or outbound parity error, command will timeout */
1963 }
1964 if (status & regs->int_comaout) {
1965 tmp = ioread32(regs->outb_isr_cause);
1966 if (tmp & regs->clic_irq)
1967 iowrite32(tmp & regs->clic_irq, regs->outb_isr_cause);
1968 }
1969 if (status & regs->int_dl_cpu2pciea) {
1970 isr_status = ioread32(regs->arm_to_pciea_drbl_reg);
1971 if (isr_status)
1972 iowrite32(isr_status, regs->arm_to_pciea_drbl_reg);
1973 }
1974
1975 mhba->global_isr = status;
1976 mhba->isr_status = isr_status;
1977
1978 return 0;
1979 }
1980
1981 /**
1982 * mvumi_read_fw_status_reg - returns the current FW status value
1983 * @mhba: Adapter soft state
1984 */
1985 static unsigned int mvumi_read_fw_status_reg(struct mvumi_hba *mhba)
1986 {
1987 unsigned int status;
1988
1989 status = ioread32(mhba->regs->arm_to_pciea_drbl_reg);
1990 if (status)
1991 iowrite32(status, mhba->regs->arm_to_pciea_drbl_reg);
1992 return status;
1993 }
1994
1995 static struct mvumi_instance_template mvumi_instance_9143 = {
1996 .fire_cmd = mvumi_fire_cmd,
1997 .enable_intr = mvumi_enable_intr,
1998 .disable_intr = mvumi_disable_intr,
1999 .clear_intr = mvumi_clear_intr,
2000 .read_fw_status_reg = mvumi_read_fw_status_reg,
2001 .check_ib_list = mvumi_check_ib_list_9143,
2002 .check_ob_list = mvumi_check_ob_list_9143,
2003 .reset_host = mvumi_reset_host_9143,
2004 };
2005
2006 static struct mvumi_instance_template mvumi_instance_9580 = {
2007 .fire_cmd = mvumi_fire_cmd,
2008 .enable_intr = mvumi_enable_intr,
2009 .disable_intr = mvumi_disable_intr,
2010 .clear_intr = mvumi_clear_intr,
2011 .read_fw_status_reg = mvumi_read_fw_status_reg,
2012 .check_ib_list = mvumi_check_ib_list_9580,
2013 .check_ob_list = mvumi_check_ob_list_9580,
2014 .reset_host = mvumi_reset_host_9580,
2015 };
2016
2017 static int mvumi_slave_configure(struct scsi_device *sdev)
2018 {
2019 struct mvumi_hba *mhba;
2020 unsigned char bitcount = sizeof(unsigned char) * 8;
2021
2022 mhba = (struct mvumi_hba *) sdev->host->hostdata;
2023 if (sdev->id >= mhba->max_target_id)
2024 return -EINVAL;
2025
2026 mhba->target_map[sdev->id / bitcount] |= (1 << (sdev->id % bitcount));
2027 return 0;
2028 }
2029
2030 /**
2031 * mvumi_build_frame - Prepares a direct cdb (DCDB) command
2032 * @mhba: Adapter soft state
2033 * @scmd: SCSI command
2034 * @cmd: Command to be prepared in
2035 *
2036 * This function prepares CDB commands. These are typcially pass-through
2037 * commands to the devices.
2038 */
2039 static unsigned char mvumi_build_frame(struct mvumi_hba *mhba,
2040 struct scsi_cmnd *scmd, struct mvumi_cmd *cmd)
2041 {
2042 struct mvumi_msg_frame *pframe;
2043
2044 cmd->scmd = scmd;
2045 cmd->cmd_status = REQ_STATUS_PENDING;
2046 pframe = cmd->frame;
2047 pframe->device_id = ((unsigned short) scmd->device->id) |
2048 (((unsigned short) scmd->device->lun) << 8);
2049 pframe->cmd_flag = 0;
2050
2051 switch (scmd->sc_data_direction) {
2052 case DMA_NONE:
2053 pframe->cmd_flag |= CMD_FLAG_NON_DATA;
2054 break;
2055 case DMA_FROM_DEVICE:
2056 pframe->cmd_flag |= CMD_FLAG_DATA_IN;
2057 break;
2058 case DMA_TO_DEVICE:
2059 pframe->cmd_flag |= CMD_FLAG_DATA_OUT;
2060 break;
2061 case DMA_BIDIRECTIONAL:
2062 default:
2063 dev_warn(&mhba->pdev->dev, "unexpected data direction[%d] "
2064 "cmd[0x%x]\n", scmd->sc_data_direction, scmd->cmnd[0]);
2065 goto error;
2066 }
2067
2068 pframe->cdb_length = scmd->cmd_len;
2069 memcpy(pframe->cdb, scmd->cmnd, pframe->cdb_length);
2070 pframe->req_function = CL_FUN_SCSI_CMD;
2071 if (scsi_bufflen(scmd)) {
2072 if (mvumi_make_sgl(mhba, scmd, &pframe->payload[0],
2073 &pframe->sg_counts))
2074 goto error;
2075
2076 pframe->data_transfer_length = scsi_bufflen(scmd);
2077 } else {
2078 pframe->sg_counts = 0;
2079 pframe->data_transfer_length = 0;
2080 }
2081 return 0;
2082
2083 error:
2084 scmd->result = (DID_OK << 16) | (DRIVER_SENSE << 24) |
2085 SAM_STAT_CHECK_CONDITION;
2086 scsi_build_sense_buffer(0, scmd->sense_buffer, ILLEGAL_REQUEST, 0x24,
2087 0);
2088 return -1;
2089 }
2090
2091 /**
2092 * mvumi_queue_command - Queue entry point
2093 * @scmd: SCSI command to be queued
2094 * @done: Callback entry point
2095 */
2096 static int mvumi_queue_command(struct Scsi_Host *shost,
2097 struct scsi_cmnd *scmd)
2098 {
2099 struct mvumi_cmd *cmd;
2100 struct mvumi_hba *mhba;
2101 unsigned long irq_flags;
2102
2103 spin_lock_irqsave(shost->host_lock, irq_flags);
2104 scsi_cmd_get_serial(shost, scmd);
2105
2106 mhba = (struct mvumi_hba *) shost->hostdata;
2107 scmd->result = 0;
2108 cmd = mvumi_get_cmd(mhba);
2109 if (unlikely(!cmd)) {
2110 spin_unlock_irqrestore(shost->host_lock, irq_flags);
2111 return SCSI_MLQUEUE_HOST_BUSY;
2112 }
2113
2114 if (unlikely(mvumi_build_frame(mhba, scmd, cmd)))
2115 goto out_return_cmd;
2116
2117 cmd->scmd = scmd;
2118 scmd->SCp.ptr = (char *) cmd;
2119 mhba->instancet->fire_cmd(mhba, cmd);
2120 spin_unlock_irqrestore(shost->host_lock, irq_flags);
2121 return 0;
2122
2123 out_return_cmd:
2124 mvumi_return_cmd(mhba, cmd);
2125 scmd->scsi_done(scmd);
2126 spin_unlock_irqrestore(shost->host_lock, irq_flags);
2127 return 0;
2128 }
2129
2130 static enum blk_eh_timer_return mvumi_timed_out(struct scsi_cmnd *scmd)
2131 {
2132 struct mvumi_cmd *cmd = (struct mvumi_cmd *) scmd->SCp.ptr;
2133 struct Scsi_Host *host = scmd->device->host;
2134 struct mvumi_hba *mhba = shost_priv(host);
2135 unsigned long flags;
2136
2137 spin_lock_irqsave(mhba->shost->host_lock, flags);
2138
2139 if (mhba->tag_cmd[cmd->frame->tag]) {
2140 mhba->tag_cmd[cmd->frame->tag] = 0;
2141 tag_release_one(mhba, &mhba->tag_pool, cmd->frame->tag);
2142 }
2143 if (!list_empty(&cmd->queue_pointer))
2144 list_del_init(&cmd->queue_pointer);
2145 else
2146 atomic_dec(&mhba->fw_outstanding);
2147
2148 scmd->result = (DRIVER_INVALID << 24) | (DID_ABORT << 16);
2149 scmd->SCp.ptr = NULL;
2150 if (scsi_bufflen(scmd)) {
2151 pci_unmap_sg(mhba->pdev, scsi_sglist(scmd),
2152 scsi_sg_count(scmd),
2153 (int)scmd->sc_data_direction);
2154 }
2155 mvumi_return_cmd(mhba, cmd);
2156 spin_unlock_irqrestore(mhba->shost->host_lock, flags);
2157
2158 return BLK_EH_DONE;
2159 }
2160
2161 static int
2162 mvumi_bios_param(struct scsi_device *sdev, struct block_device *bdev,
2163 sector_t capacity, int geom[])
2164 {
2165 int heads, sectors;
2166 sector_t cylinders;
2167 unsigned long tmp;
2168
2169 heads = 64;
2170 sectors = 32;
2171 tmp = heads * sectors;
2172 cylinders = capacity;
2173 sector_div(cylinders, tmp);
2174
2175 if (capacity >= 0x200000) {
2176 heads = 255;
2177 sectors = 63;
2178 tmp = heads * sectors;
2179 cylinders = capacity;
2180 sector_div(cylinders, tmp);
2181 }
2182 geom[0] = heads;
2183 geom[1] = sectors;
2184 geom[2] = cylinders;
2185
2186 return 0;
2187 }
2188
2189 static struct scsi_host_template mvumi_template = {
2190
2191 .module = THIS_MODULE,
2192 .name = "Marvell Storage Controller",
2193 .slave_configure = mvumi_slave_configure,
2194 .queuecommand = mvumi_queue_command,
2195 .eh_timed_out = mvumi_timed_out,
2196 .eh_host_reset_handler = mvumi_host_reset,
2197 .bios_param = mvumi_bios_param,
2198 .this_id = -1,
2199 };
2200
2201 static int mvumi_cfg_hw_reg(struct mvumi_hba *mhba)
2202 {
2203 void *base = NULL;
2204 struct mvumi_hw_regs *regs;
2205
2206 switch (mhba->pdev->device) {
2207 case PCI_DEVICE_ID_MARVELL_MV9143:
2208 mhba->mmio = mhba->base_addr[0];
2209 base = mhba->mmio;
2210 if (!mhba->regs) {
2211 mhba->regs = kzalloc(sizeof(*regs), GFP_KERNEL);
2212 if (mhba->regs == NULL)
2213 return -ENOMEM;
2214 }
2215 regs = mhba->regs;
2216
2217 /* For Arm */
2218 regs->ctrl_sts_reg = base + 0x20104;
2219 regs->rstoutn_mask_reg = base + 0x20108;
2220 regs->sys_soft_rst_reg = base + 0x2010C;
2221 regs->main_int_cause_reg = base + 0x20200;
2222 regs->enpointa_mask_reg = base + 0x2020C;
2223 regs->rstoutn_en_reg = base + 0xF1400;
2224 /* For Doorbell */
2225 regs->pciea_to_arm_drbl_reg = base + 0x20400;
2226 regs->arm_to_pciea_drbl_reg = base + 0x20408;
2227 regs->arm_to_pciea_mask_reg = base + 0x2040C;
2228 regs->pciea_to_arm_msg0 = base + 0x20430;
2229 regs->pciea_to_arm_msg1 = base + 0x20434;
2230 regs->arm_to_pciea_msg0 = base + 0x20438;
2231 regs->arm_to_pciea_msg1 = base + 0x2043C;
2232
2233 /* For Message Unit */
2234
2235 regs->inb_aval_count_basel = base + 0x508;
2236 regs->inb_aval_count_baseh = base + 0x50C;
2237 regs->inb_write_pointer = base + 0x518;
2238 regs->inb_read_pointer = base + 0x51C;
2239 regs->outb_coal_cfg = base + 0x568;
2240 regs->outb_copy_basel = base + 0x5B0;
2241 regs->outb_copy_baseh = base + 0x5B4;
2242 regs->outb_copy_pointer = base + 0x544;
2243 regs->outb_read_pointer = base + 0x548;
2244 regs->outb_isr_cause = base + 0x560;
2245 regs->outb_coal_cfg = base + 0x568;
2246 /* Bit setting for HW */
2247 regs->int_comaout = 1 << 8;
2248 regs->int_comaerr = 1 << 6;
2249 regs->int_dl_cpu2pciea = 1 << 1;
2250 regs->cl_pointer_toggle = 1 << 12;
2251 regs->clic_irq = 1 << 1;
2252 regs->clic_in_err = 1 << 8;
2253 regs->clic_out_err = 1 << 12;
2254 regs->cl_slot_num_mask = 0xFFF;
2255 regs->int_drbl_int_mask = 0x3FFFFFFF;
2256 regs->int_mu = regs->int_dl_cpu2pciea | regs->int_comaout |
2257 regs->int_comaerr;
2258 break;
2259 case PCI_DEVICE_ID_MARVELL_MV9580:
2260 mhba->mmio = mhba->base_addr[2];
2261 base = mhba->mmio;
2262 if (!mhba->regs) {
2263 mhba->regs = kzalloc(sizeof(*regs), GFP_KERNEL);
2264 if (mhba->regs == NULL)
2265 return -ENOMEM;
2266 }
2267 regs = mhba->regs;
2268 /* For Arm */
2269 regs->ctrl_sts_reg = base + 0x20104;
2270 regs->rstoutn_mask_reg = base + 0x1010C;
2271 regs->sys_soft_rst_reg = base + 0x10108;
2272 regs->main_int_cause_reg = base + 0x10200;
2273 regs->enpointa_mask_reg = base + 0x1020C;
2274 regs->rstoutn_en_reg = base + 0xF1400;
2275
2276 /* For Doorbell */
2277 regs->pciea_to_arm_drbl_reg = base + 0x10460;
2278 regs->arm_to_pciea_drbl_reg = base + 0x10480;
2279 regs->arm_to_pciea_mask_reg = base + 0x10484;
2280 regs->pciea_to_arm_msg0 = base + 0x10400;
2281 regs->pciea_to_arm_msg1 = base + 0x10404;
2282 regs->arm_to_pciea_msg0 = base + 0x10420;
2283 regs->arm_to_pciea_msg1 = base + 0x10424;
2284
2285 /* For reset*/
2286 regs->reset_request = base + 0x10108;
2287 regs->reset_enable = base + 0x1010c;
2288
2289 /* For Message Unit */
2290 regs->inb_aval_count_basel = base + 0x4008;
2291 regs->inb_aval_count_baseh = base + 0x400C;
2292 regs->inb_write_pointer = base + 0x4018;
2293 regs->inb_read_pointer = base + 0x401C;
2294 regs->outb_copy_basel = base + 0x4058;
2295 regs->outb_copy_baseh = base + 0x405C;
2296 regs->outb_copy_pointer = base + 0x406C;
2297 regs->outb_read_pointer = base + 0x4070;
2298 regs->outb_coal_cfg = base + 0x4080;
2299 regs->outb_isr_cause = base + 0x4088;
2300 /* Bit setting for HW */
2301 regs->int_comaout = 1 << 4;
2302 regs->int_dl_cpu2pciea = 1 << 12;
2303 regs->int_comaerr = 1 << 29;
2304 regs->cl_pointer_toggle = 1 << 14;
2305 regs->cl_slot_num_mask = 0x3FFF;
2306 regs->clic_irq = 1 << 0;
2307 regs->clic_out_err = 1 << 1;
2308 regs->int_drbl_int_mask = 0x3FFFFFFF;
2309 regs->int_mu = regs->int_dl_cpu2pciea | regs->int_comaout;
2310 break;
2311 default:
2312 return -1;
2313 break;
2314 }
2315
2316 return 0;
2317 }
2318
2319 /**
2320 * mvumi_init_fw - Initializes the FW
2321 * @mhba: Adapter soft state
2322 *
2323 * This is the main function for initializing firmware.
2324 */
2325 static int mvumi_init_fw(struct mvumi_hba *mhba)
2326 {
2327 int ret = 0;
2328
2329 if (pci_request_regions(mhba->pdev, MV_DRIVER_NAME)) {
2330 dev_err(&mhba->pdev->dev, "IO memory region busy!\n");
2331 return -EBUSY;
2332 }
2333 ret = mvumi_map_pci_addr(mhba->pdev, mhba->base_addr);
2334 if (ret)
2335 goto fail_ioremap;
2336
2337 switch (mhba->pdev->device) {
2338 case PCI_DEVICE_ID_MARVELL_MV9143:
2339 mhba->instancet = &mvumi_instance_9143;
2340 mhba->io_seq = 0;
2341 mhba->max_sge = MVUMI_MAX_SG_ENTRY;
2342 mhba->request_id_enabled = 1;
2343 break;
2344 case PCI_DEVICE_ID_MARVELL_MV9580:
2345 mhba->instancet = &mvumi_instance_9580;
2346 mhba->io_seq = 0;
2347 mhba->max_sge = MVUMI_MAX_SG_ENTRY;
2348 break;
2349 default:
2350 dev_err(&mhba->pdev->dev, "device 0x%x not supported!\n",
2351 mhba->pdev->device);
2352 mhba->instancet = NULL;
2353 ret = -EINVAL;
2354 goto fail_alloc_mem;
2355 }
2356 dev_dbg(&mhba->pdev->dev, "device id : %04X is found.\n",
2357 mhba->pdev->device);
2358 ret = mvumi_cfg_hw_reg(mhba);
2359 if (ret) {
2360 dev_err(&mhba->pdev->dev,
2361 "failed to allocate memory for reg\n");
2362 ret = -ENOMEM;
2363 goto fail_alloc_mem;
2364 }
2365 mhba->handshake_page = pci_alloc_consistent(mhba->pdev, HSP_MAX_SIZE,
2366 &mhba->handshake_page_phys);
2367 if (!mhba->handshake_page) {
2368 dev_err(&mhba->pdev->dev,
2369 "failed to allocate memory for handshake\n");
2370 ret = -ENOMEM;
2371 goto fail_alloc_page;
2372 }
2373
2374 if (mvumi_start(mhba)) {
2375 ret = -EINVAL;
2376 goto fail_ready_state;
2377 }
2378 ret = mvumi_alloc_cmds(mhba);
2379 if (ret)
2380 goto fail_ready_state;
2381
2382 return 0;
2383
2384 fail_ready_state:
2385 mvumi_release_mem_resource(mhba);
2386 pci_free_consistent(mhba->pdev, HSP_MAX_SIZE,
2387 mhba->handshake_page, mhba->handshake_page_phys);
2388 fail_alloc_page:
2389 kfree(mhba->regs);
2390 fail_alloc_mem:
2391 mvumi_unmap_pci_addr(mhba->pdev, mhba->base_addr);
2392 fail_ioremap:
2393 pci_release_regions(mhba->pdev);
2394
2395 return ret;
2396 }
2397
2398 /**
2399 * mvumi_io_attach - Attaches this driver to SCSI mid-layer
2400 * @mhba: Adapter soft state
2401 */
2402 static int mvumi_io_attach(struct mvumi_hba *mhba)
2403 {
2404 struct Scsi_Host *host = mhba->shost;
2405 struct scsi_device *sdev = NULL;
2406 int ret;
2407 unsigned int max_sg = (mhba->ib_max_size + 4 -
2408 sizeof(struct mvumi_msg_frame)) / sizeof(struct mvumi_sgl);
2409
2410 host->irq = mhba->pdev->irq;
2411 host->unique_id = mhba->unique_id;
2412 host->can_queue = (mhba->max_io - 1) ? (mhba->max_io - 1) : 1;
2413 host->sg_tablesize = mhba->max_sge > max_sg ? max_sg : mhba->max_sge;
2414 host->max_sectors = mhba->max_transfer_size / 512;
2415 host->cmd_per_lun = (mhba->max_io - 1) ? (mhba->max_io - 1) : 1;
2416 host->max_id = mhba->max_target_id;
2417 host->max_cmd_len = MAX_COMMAND_SIZE;
2418
2419 ret = scsi_add_host(host, &mhba->pdev->dev);
2420 if (ret) {
2421 dev_err(&mhba->pdev->dev, "scsi_add_host failed\n");
2422 return ret;
2423 }
2424 mhba->fw_flag |= MVUMI_FW_ATTACH;
2425
2426 mutex_lock(&mhba->sas_discovery_mutex);
2427 if (mhba->pdev->device == PCI_DEVICE_ID_MARVELL_MV9580)
2428 ret = scsi_add_device(host, 0, mhba->max_target_id - 1, 0);
2429 else
2430 ret = 0;
2431 if (ret) {
2432 dev_err(&mhba->pdev->dev, "add virtual device failed\n");
2433 mutex_unlock(&mhba->sas_discovery_mutex);
2434 goto fail_add_device;
2435 }
2436
2437 mhba->dm_thread = kthread_create(mvumi_rescan_bus,
2438 mhba, "mvumi_scanthread");
2439 if (IS_ERR(mhba->dm_thread)) {
2440 dev_err(&mhba->pdev->dev,
2441 "failed to create device scan thread\n");
2442 mutex_unlock(&mhba->sas_discovery_mutex);
2443 goto fail_create_thread;
2444 }
2445 atomic_set(&mhba->pnp_count, 1);
2446 wake_up_process(mhba->dm_thread);
2447
2448 mutex_unlock(&mhba->sas_discovery_mutex);
2449 return 0;
2450
2451 fail_create_thread:
2452 if (mhba->pdev->device == PCI_DEVICE_ID_MARVELL_MV9580)
2453 sdev = scsi_device_lookup(mhba->shost, 0,
2454 mhba->max_target_id - 1, 0);
2455 if (sdev) {
2456 scsi_remove_device(sdev);
2457 scsi_device_put(sdev);
2458 }
2459 fail_add_device:
2460 scsi_remove_host(mhba->shost);
2461 return ret;
2462 }
2463
2464 /**
2465 * mvumi_probe_one - PCI hotplug entry point
2466 * @pdev: PCI device structure
2467 * @id: PCI ids of supported hotplugged adapter
2468 */
2469 static int mvumi_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
2470 {
2471 struct Scsi_Host *host;
2472 struct mvumi_hba *mhba;
2473 int ret;
2474
2475 dev_dbg(&pdev->dev, " %#4.04x:%#4.04x:%#4.04x:%#4.04x: ",
2476 pdev->vendor, pdev->device, pdev->subsystem_vendor,
2477 pdev->subsystem_device);
2478
2479 ret = pci_enable_device(pdev);
2480 if (ret)
2481 return ret;
2482
2483 pci_set_master(pdev);
2484
2485 if (IS_DMA64) {
2486 ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
2487 if (ret) {
2488 ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
2489 if (ret)
2490 goto fail_set_dma_mask;
2491 }
2492 } else {
2493 ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
2494 if (ret)
2495 goto fail_set_dma_mask;
2496 }
2497
2498 host = scsi_host_alloc(&mvumi_template, sizeof(*mhba));
2499 if (!host) {
2500 dev_err(&pdev->dev, "scsi_host_alloc failed\n");
2501 ret = -ENOMEM;
2502 goto fail_alloc_instance;
2503 }
2504 mhba = shost_priv(host);
2505
2506 INIT_LIST_HEAD(&mhba->cmd_pool);
2507 INIT_LIST_HEAD(&mhba->ob_data_list);
2508 INIT_LIST_HEAD(&mhba->free_ob_list);
2509 INIT_LIST_HEAD(&mhba->res_list);
2510 INIT_LIST_HEAD(&mhba->waiting_req_list);
2511 mutex_init(&mhba->device_lock);
2512 INIT_LIST_HEAD(&mhba->mhba_dev_list);
2513 INIT_LIST_HEAD(&mhba->shost_dev_list);
2514 atomic_set(&mhba->fw_outstanding, 0);
2515 init_waitqueue_head(&mhba->int_cmd_wait_q);
2516 mutex_init(&mhba->sas_discovery_mutex);
2517
2518 mhba->pdev = pdev;
2519 mhba->shost = host;
2520 mhba->unique_id = pdev->bus->number << 8 | pdev->devfn;
2521
2522 ret = mvumi_init_fw(mhba);
2523 if (ret)
2524 goto fail_init_fw;
2525
2526 ret = request_irq(mhba->pdev->irq, mvumi_isr_handler, IRQF_SHARED,
2527 "mvumi", mhba);
2528 if (ret) {
2529 dev_err(&pdev->dev, "failed to register IRQ\n");
2530 goto fail_init_irq;
2531 }
2532
2533 mhba->instancet->enable_intr(mhba);
2534 pci_set_drvdata(pdev, mhba);
2535
2536 ret = mvumi_io_attach(mhba);
2537 if (ret)
2538 goto fail_io_attach;
2539
2540 mvumi_backup_bar_addr(mhba);
2541 dev_dbg(&pdev->dev, "probe mvumi driver successfully.\n");
2542
2543 return 0;
2544
2545 fail_io_attach:
2546 mhba->instancet->disable_intr(mhba);
2547 free_irq(mhba->pdev->irq, mhba);
2548 fail_init_irq:
2549 mvumi_release_fw(mhba);
2550 fail_init_fw:
2551 scsi_host_put(host);
2552
2553 fail_alloc_instance:
2554 fail_set_dma_mask:
2555 pci_disable_device(pdev);
2556
2557 return ret;
2558 }
2559
2560 static void mvumi_detach_one(struct pci_dev *pdev)
2561 {
2562 struct Scsi_Host *host;
2563 struct mvumi_hba *mhba;
2564
2565 mhba = pci_get_drvdata(pdev);
2566 if (mhba->dm_thread) {
2567 kthread_stop(mhba->dm_thread);
2568 mhba->dm_thread = NULL;
2569 }
2570
2571 mvumi_detach_devices(mhba);
2572 host = mhba->shost;
2573 scsi_remove_host(mhba->shost);
2574 mvumi_flush_cache(mhba);
2575
2576 mhba->instancet->disable_intr(mhba);
2577 free_irq(mhba->pdev->irq, mhba);
2578 mvumi_release_fw(mhba);
2579 scsi_host_put(host);
2580 pci_disable_device(pdev);
2581 dev_dbg(&pdev->dev, "driver is removed!\n");
2582 }
2583
2584 /**
2585 * mvumi_shutdown - Shutdown entry point
2586 * @device: Generic device structure
2587 */
2588 static void mvumi_shutdown(struct pci_dev *pdev)
2589 {
2590 struct mvumi_hba *mhba = pci_get_drvdata(pdev);
2591
2592 mvumi_flush_cache(mhba);
2593 }
2594
2595 static int __maybe_unused mvumi_suspend(struct pci_dev *pdev, pm_message_t state)
2596 {
2597 struct mvumi_hba *mhba = NULL;
2598
2599 mhba = pci_get_drvdata(pdev);
2600 mvumi_flush_cache(mhba);
2601
2602 pci_set_drvdata(pdev, mhba);
2603 mhba->instancet->disable_intr(mhba);
2604 free_irq(mhba->pdev->irq, mhba);
2605 mvumi_unmap_pci_addr(pdev, mhba->base_addr);
2606 pci_release_regions(pdev);
2607 pci_save_state(pdev);
2608 pci_disable_device(pdev);
2609 pci_set_power_state(pdev, pci_choose_state(pdev, state));
2610
2611 return 0;
2612 }
2613
2614 static int __maybe_unused mvumi_resume(struct pci_dev *pdev)
2615 {
2616 int ret;
2617 struct mvumi_hba *mhba = NULL;
2618
2619 mhba = pci_get_drvdata(pdev);
2620
2621 pci_set_power_state(pdev, PCI_D0);
2622 pci_enable_wake(pdev, PCI_D0, 0);
2623 pci_restore_state(pdev);
2624
2625 ret = pci_enable_device(pdev);
2626 if (ret) {
2627 dev_err(&pdev->dev, "enable device failed\n");
2628 return ret;
2629 }
2630 pci_set_master(pdev);
2631 if (IS_DMA64) {
2632 ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
2633 if (ret) {
2634 ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
2635 if (ret)
2636 goto fail;
2637 }
2638 } else {
2639 ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
2640 if (ret)
2641 goto fail;
2642 }
2643 ret = pci_request_regions(mhba->pdev, MV_DRIVER_NAME);
2644 if (ret)
2645 goto fail;
2646 ret = mvumi_map_pci_addr(mhba->pdev, mhba->base_addr);
2647 if (ret)
2648 goto release_regions;
2649
2650 if (mvumi_cfg_hw_reg(mhba)) {
2651 ret = -EINVAL;
2652 goto unmap_pci_addr;
2653 }
2654
2655 mhba->mmio = mhba->base_addr[0];
2656 mvumi_reset(mhba);
2657
2658 if (mvumi_start(mhba)) {
2659 ret = -EINVAL;
2660 goto unmap_pci_addr;
2661 }
2662
2663 ret = request_irq(mhba->pdev->irq, mvumi_isr_handler, IRQF_SHARED,
2664 "mvumi", mhba);
2665 if (ret) {
2666 dev_err(&pdev->dev, "failed to register IRQ\n");
2667 goto unmap_pci_addr;
2668 }
2669 mhba->instancet->enable_intr(mhba);
2670
2671 return 0;
2672
2673 unmap_pci_addr:
2674 mvumi_unmap_pci_addr(pdev, mhba->base_addr);
2675 release_regions:
2676 pci_release_regions(pdev);
2677 fail:
2678 pci_disable_device(pdev);
2679
2680 return ret;
2681 }
2682
2683 static struct pci_driver mvumi_pci_driver = {
2684
2685 .name = MV_DRIVER_NAME,
2686 .id_table = mvumi_pci_table,
2687 .probe = mvumi_probe_one,
2688 .remove = mvumi_detach_one,
2689 .shutdown = mvumi_shutdown,
2690 #ifdef CONFIG_PM
2691 .suspend = mvumi_suspend,
2692 .resume = mvumi_resume,
2693 #endif
2694 };
2695
2696 module_pci_driver(mvumi_pci_driver);
Linux with added FPC-III support