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Merge branches 'for-4.11/upstream-fixes', 'for-4.12/accutouch', 'for-4.12/cp2112...
[mirror_ubuntu-artful-kernel.git] / drivers / scsi / mvumi.c
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 if (sgnum) {
214 sg = scsi_sglist(scmd);
215 *sg_count = pci_map_sg(mhba->pdev, sg, sgnum,
216 (int) scmd->sc_data_direction);
217 if (*sg_count > mhba->max_sge) {
218 dev_err(&mhba->pdev->dev, "sg count[0x%x] is bigger "
219 "than max sg[0x%x].\n",
220 *sg_count, mhba->max_sge);
221 return -1;
222 }
223 for (i = 0; i < *sg_count; i++) {
224 busaddr = sg_dma_address(&sg[i]);
225 m_sg->baseaddr_l = cpu_to_le32(lower_32_bits(busaddr));
226 m_sg->baseaddr_h = cpu_to_le32(upper_32_bits(busaddr));
227 m_sg->flags = 0;
228 sgd_setsz(mhba, m_sg, cpu_to_le32(sg_dma_len(&sg[i])));
229 if ((i + 1) == *sg_count)
230 m_sg->flags |= 1U << mhba->eot_flag;
231
232 sgd_inc(mhba, m_sg);
233 }
234 } else {
235 scmd->SCp.dma_handle = scsi_bufflen(scmd) ?
236 pci_map_single(mhba->pdev, scsi_sglist(scmd),
237 scsi_bufflen(scmd),
238 (int) scmd->sc_data_direction)
239 : 0;
240 busaddr = scmd->SCp.dma_handle;
241 m_sg->baseaddr_l = cpu_to_le32(lower_32_bits(busaddr));
242 m_sg->baseaddr_h = cpu_to_le32(upper_32_bits(busaddr));
243 m_sg->flags = 1U << mhba->eot_flag;
244 sgd_setsz(mhba, m_sg, cpu_to_le32(scsi_bufflen(scmd)));
245 *sg_count = 1;
246 }
247
248 return 0;
249 }
250
251 static int mvumi_internal_cmd_sgl(struct mvumi_hba *mhba, struct mvumi_cmd *cmd,
252 unsigned int size)
253 {
254 struct mvumi_sgl *m_sg;
255 void *virt_addr;
256 dma_addr_t phy_addr;
257
258 if (size == 0)
259 return 0;
260
261 virt_addr = pci_zalloc_consistent(mhba->pdev, size, &phy_addr);
262 if (!virt_addr)
263 return -1;
264
265 m_sg = (struct mvumi_sgl *) &cmd->frame->payload[0];
266 cmd->frame->sg_counts = 1;
267 cmd->data_buf = virt_addr;
268
269 m_sg->baseaddr_l = cpu_to_le32(lower_32_bits(phy_addr));
270 m_sg->baseaddr_h = cpu_to_le32(upper_32_bits(phy_addr));
271 m_sg->flags = 1U << mhba->eot_flag;
272 sgd_setsz(mhba, m_sg, cpu_to_le32(size));
273
274 return 0;
275 }
276
277 static struct mvumi_cmd *mvumi_create_internal_cmd(struct mvumi_hba *mhba,
278 unsigned int buf_size)
279 {
280 struct mvumi_cmd *cmd;
281
282 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
283 if (!cmd) {
284 dev_err(&mhba->pdev->dev, "failed to create a internal cmd\n");
285 return NULL;
286 }
287 INIT_LIST_HEAD(&cmd->queue_pointer);
288
289 cmd->frame = pci_alloc_consistent(mhba->pdev,
290 mhba->ib_max_size, &cmd->frame_phys);
291 if (!cmd->frame) {
292 dev_err(&mhba->pdev->dev, "failed to allocate memory for FW"
293 " frame,size = %d.\n", mhba->ib_max_size);
294 kfree(cmd);
295 return NULL;
296 }
297
298 if (buf_size) {
299 if (mvumi_internal_cmd_sgl(mhba, cmd, buf_size)) {
300 dev_err(&mhba->pdev->dev, "failed to allocate memory"
301 " for internal frame\n");
302 pci_free_consistent(mhba->pdev, mhba->ib_max_size,
303 cmd->frame, cmd->frame_phys);
304 kfree(cmd);
305 return NULL;
306 }
307 } else
308 cmd->frame->sg_counts = 0;
309
310 return cmd;
311 }
312
313 static void mvumi_delete_internal_cmd(struct mvumi_hba *mhba,
314 struct mvumi_cmd *cmd)
315 {
316 struct mvumi_sgl *m_sg;
317 unsigned int size;
318 dma_addr_t phy_addr;
319
320 if (cmd && cmd->frame) {
321 if (cmd->frame->sg_counts) {
322 m_sg = (struct mvumi_sgl *) &cmd->frame->payload[0];
323 sgd_getsz(mhba, m_sg, size);
324
325 phy_addr = (dma_addr_t) m_sg->baseaddr_l |
326 (dma_addr_t) ((m_sg->baseaddr_h << 16) << 16);
327
328 pci_free_consistent(mhba->pdev, size, cmd->data_buf,
329 phy_addr);
330 }
331 pci_free_consistent(mhba->pdev, mhba->ib_max_size,
332 cmd->frame, cmd->frame_phys);
333 kfree(cmd);
334 }
335 }
336
337 /**
338 * mvumi_get_cmd - Get a command from the free pool
339 * @mhba: Adapter soft state
340 *
341 * Returns a free command from the pool
342 */
343 static struct mvumi_cmd *mvumi_get_cmd(struct mvumi_hba *mhba)
344 {
345 struct mvumi_cmd *cmd = NULL;
346
347 if (likely(!list_empty(&mhba->cmd_pool))) {
348 cmd = list_entry((&mhba->cmd_pool)->next,
349 struct mvumi_cmd, queue_pointer);
350 list_del_init(&cmd->queue_pointer);
351 } else
352 dev_warn(&mhba->pdev->dev, "command pool is empty!\n");
353
354 return cmd;
355 }
356
357 /**
358 * mvumi_return_cmd - Return a cmd to free command pool
359 * @mhba: Adapter soft state
360 * @cmd: Command packet to be returned to free command pool
361 */
362 static inline void mvumi_return_cmd(struct mvumi_hba *mhba,
363 struct mvumi_cmd *cmd)
364 {
365 cmd->scmd = NULL;
366 list_add_tail(&cmd->queue_pointer, &mhba->cmd_pool);
367 }
368
369 /**
370 * mvumi_free_cmds - Free all the cmds in the free cmd pool
371 * @mhba: Adapter soft state
372 */
373 static void mvumi_free_cmds(struct mvumi_hba *mhba)
374 {
375 struct mvumi_cmd *cmd;
376
377 while (!list_empty(&mhba->cmd_pool)) {
378 cmd = list_first_entry(&mhba->cmd_pool, struct mvumi_cmd,
379 queue_pointer);
380 list_del(&cmd->queue_pointer);
381 if (!(mhba->hba_capability & HS_CAPABILITY_SUPPORT_DYN_SRC))
382 kfree(cmd->frame);
383 kfree(cmd);
384 }
385 }
386
387 /**
388 * mvumi_alloc_cmds - Allocates the command packets
389 * @mhba: Adapter soft state
390 *
391 */
392 static int mvumi_alloc_cmds(struct mvumi_hba *mhba)
393 {
394 int i;
395 struct mvumi_cmd *cmd;
396
397 for (i = 0; i < mhba->max_io; i++) {
398 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
399 if (!cmd)
400 goto err_exit;
401
402 INIT_LIST_HEAD(&cmd->queue_pointer);
403 list_add_tail(&cmd->queue_pointer, &mhba->cmd_pool);
404 if (mhba->hba_capability & HS_CAPABILITY_SUPPORT_DYN_SRC) {
405 cmd->frame = mhba->ib_frame + i * mhba->ib_max_size;
406 cmd->frame_phys = mhba->ib_frame_phys
407 + i * mhba->ib_max_size;
408 } else
409 cmd->frame = kzalloc(mhba->ib_max_size, GFP_KERNEL);
410 if (!cmd->frame)
411 goto err_exit;
412 }
413 return 0;
414
415 err_exit:
416 dev_err(&mhba->pdev->dev,
417 "failed to allocate memory for cmd[0x%x].\n", i);
418 while (!list_empty(&mhba->cmd_pool)) {
419 cmd = list_first_entry(&mhba->cmd_pool, struct mvumi_cmd,
420 queue_pointer);
421 list_del(&cmd->queue_pointer);
422 if (!(mhba->hba_capability & HS_CAPABILITY_SUPPORT_DYN_SRC))
423 kfree(cmd->frame);
424 kfree(cmd);
425 }
426 return -ENOMEM;
427 }
428
429 static unsigned int mvumi_check_ib_list_9143(struct mvumi_hba *mhba)
430 {
431 unsigned int ib_rp_reg;
432 struct mvumi_hw_regs *regs = mhba->regs;
433
434 ib_rp_reg = ioread32(mhba->regs->inb_read_pointer);
435
436 if (unlikely(((ib_rp_reg & regs->cl_slot_num_mask) ==
437 (mhba->ib_cur_slot & regs->cl_slot_num_mask)) &&
438 ((ib_rp_reg & regs->cl_pointer_toggle)
439 != (mhba->ib_cur_slot & regs->cl_pointer_toggle)))) {
440 dev_warn(&mhba->pdev->dev, "no free slot to use.\n");
441 return 0;
442 }
443 if (atomic_read(&mhba->fw_outstanding) >= mhba->max_io) {
444 dev_warn(&mhba->pdev->dev, "firmware io overflow.\n");
445 return 0;
446 } else {
447 return mhba->max_io - atomic_read(&mhba->fw_outstanding);
448 }
449 }
450
451 static unsigned int mvumi_check_ib_list_9580(struct mvumi_hba *mhba)
452 {
453 unsigned int count;
454 if (atomic_read(&mhba->fw_outstanding) >= (mhba->max_io - 1))
455 return 0;
456 count = ioread32(mhba->ib_shadow);
457 if (count == 0xffff)
458 return 0;
459 return count;
460 }
461
462 static void mvumi_get_ib_list_entry(struct mvumi_hba *mhba, void **ib_entry)
463 {
464 unsigned int cur_ib_entry;
465
466 cur_ib_entry = mhba->ib_cur_slot & mhba->regs->cl_slot_num_mask;
467 cur_ib_entry++;
468 if (cur_ib_entry >= mhba->list_num_io) {
469 cur_ib_entry -= mhba->list_num_io;
470 mhba->ib_cur_slot ^= mhba->regs->cl_pointer_toggle;
471 }
472 mhba->ib_cur_slot &= ~mhba->regs->cl_slot_num_mask;
473 mhba->ib_cur_slot |= (cur_ib_entry & mhba->regs->cl_slot_num_mask);
474 if (mhba->hba_capability & HS_CAPABILITY_SUPPORT_DYN_SRC) {
475 *ib_entry = mhba->ib_list + cur_ib_entry *
476 sizeof(struct mvumi_dyn_list_entry);
477 } else {
478 *ib_entry = mhba->ib_list + cur_ib_entry * mhba->ib_max_size;
479 }
480 atomic_inc(&mhba->fw_outstanding);
481 }
482
483 static void mvumi_send_ib_list_entry(struct mvumi_hba *mhba)
484 {
485 iowrite32(0xffff, mhba->ib_shadow);
486 iowrite32(mhba->ib_cur_slot, mhba->regs->inb_write_pointer);
487 }
488
489 static char mvumi_check_ob_frame(struct mvumi_hba *mhba,
490 unsigned int cur_obf, struct mvumi_rsp_frame *p_outb_frame)
491 {
492 unsigned short tag, request_id;
493
494 udelay(1);
495 p_outb_frame = mhba->ob_list + cur_obf * mhba->ob_max_size;
496 request_id = p_outb_frame->request_id;
497 tag = p_outb_frame->tag;
498 if (tag > mhba->tag_pool.size) {
499 dev_err(&mhba->pdev->dev, "ob frame data error\n");
500 return -1;
501 }
502 if (mhba->tag_cmd[tag] == NULL) {
503 dev_err(&mhba->pdev->dev, "tag[0x%x] with NO command\n", tag);
504 return -1;
505 } else if (mhba->tag_cmd[tag]->request_id != request_id &&
506 mhba->request_id_enabled) {
507 dev_err(&mhba->pdev->dev, "request ID from FW:0x%x,"
508 "cmd request ID:0x%x\n", request_id,
509 mhba->tag_cmd[tag]->request_id);
510 return -1;
511 }
512
513 return 0;
514 }
515
516 static int mvumi_check_ob_list_9143(struct mvumi_hba *mhba,
517 unsigned int *cur_obf, unsigned int *assign_obf_end)
518 {
519 unsigned int ob_write, ob_write_shadow;
520 struct mvumi_hw_regs *regs = mhba->regs;
521
522 do {
523 ob_write = ioread32(regs->outb_copy_pointer);
524 ob_write_shadow = ioread32(mhba->ob_shadow);
525 } while ((ob_write & regs->cl_slot_num_mask) != ob_write_shadow);
526
527 *cur_obf = mhba->ob_cur_slot & mhba->regs->cl_slot_num_mask;
528 *assign_obf_end = ob_write & mhba->regs->cl_slot_num_mask;
529
530 if ((ob_write & regs->cl_pointer_toggle) !=
531 (mhba->ob_cur_slot & regs->cl_pointer_toggle)) {
532 *assign_obf_end += mhba->list_num_io;
533 }
534 return 0;
535 }
536
537 static int mvumi_check_ob_list_9580(struct mvumi_hba *mhba,
538 unsigned int *cur_obf, unsigned int *assign_obf_end)
539 {
540 unsigned int ob_write;
541 struct mvumi_hw_regs *regs = mhba->regs;
542
543 ob_write = ioread32(regs->outb_read_pointer);
544 ob_write = ioread32(regs->outb_copy_pointer);
545 *cur_obf = mhba->ob_cur_slot & mhba->regs->cl_slot_num_mask;
546 *assign_obf_end = ob_write & mhba->regs->cl_slot_num_mask;
547 if (*assign_obf_end < *cur_obf)
548 *assign_obf_end += mhba->list_num_io;
549 else if (*assign_obf_end == *cur_obf)
550 return -1;
551 return 0;
552 }
553
554 static void mvumi_receive_ob_list_entry(struct mvumi_hba *mhba)
555 {
556 unsigned int cur_obf, assign_obf_end, i;
557 struct mvumi_ob_data *ob_data;
558 struct mvumi_rsp_frame *p_outb_frame;
559 struct mvumi_hw_regs *regs = mhba->regs;
560
561 if (mhba->instancet->check_ob_list(mhba, &cur_obf, &assign_obf_end))
562 return;
563
564 for (i = (assign_obf_end - cur_obf); i != 0; i--) {
565 cur_obf++;
566 if (cur_obf >= mhba->list_num_io) {
567 cur_obf -= mhba->list_num_io;
568 mhba->ob_cur_slot ^= regs->cl_pointer_toggle;
569 }
570
571 p_outb_frame = mhba->ob_list + cur_obf * mhba->ob_max_size;
572
573 /* Copy pointer may point to entry in outbound list
574 * before entry has valid data
575 */
576 if (unlikely(p_outb_frame->tag > mhba->tag_pool.size ||
577 mhba->tag_cmd[p_outb_frame->tag] == NULL ||
578 p_outb_frame->request_id !=
579 mhba->tag_cmd[p_outb_frame->tag]->request_id))
580 if (mvumi_check_ob_frame(mhba, cur_obf, p_outb_frame))
581 continue;
582
583 if (!list_empty(&mhba->ob_data_list)) {
584 ob_data = (struct mvumi_ob_data *)
585 list_first_entry(&mhba->ob_data_list,
586 struct mvumi_ob_data, list);
587 list_del_init(&ob_data->list);
588 } else {
589 ob_data = NULL;
590 if (cur_obf == 0) {
591 cur_obf = mhba->list_num_io - 1;
592 mhba->ob_cur_slot ^= regs->cl_pointer_toggle;
593 } else
594 cur_obf -= 1;
595 break;
596 }
597
598 memcpy(ob_data->data, p_outb_frame, mhba->ob_max_size);
599 p_outb_frame->tag = 0xff;
600
601 list_add_tail(&ob_data->list, &mhba->free_ob_list);
602 }
603 mhba->ob_cur_slot &= ~regs->cl_slot_num_mask;
604 mhba->ob_cur_slot |= (cur_obf & regs->cl_slot_num_mask);
605 iowrite32(mhba->ob_cur_slot, regs->outb_read_pointer);
606 }
607
608 static void mvumi_reset(struct mvumi_hba *mhba)
609 {
610 struct mvumi_hw_regs *regs = mhba->regs;
611
612 iowrite32(0, regs->enpointa_mask_reg);
613 if (ioread32(regs->arm_to_pciea_msg1) != HANDSHAKE_DONESTATE)
614 return;
615
616 iowrite32(DRBL_SOFT_RESET, regs->pciea_to_arm_drbl_reg);
617 }
618
619 static unsigned char mvumi_start(struct mvumi_hba *mhba);
620
621 static int mvumi_wait_for_outstanding(struct mvumi_hba *mhba)
622 {
623 mhba->fw_state = FW_STATE_ABORT;
624 mvumi_reset(mhba);
625
626 if (mvumi_start(mhba))
627 return FAILED;
628 else
629 return SUCCESS;
630 }
631
632 static int mvumi_wait_for_fw(struct mvumi_hba *mhba)
633 {
634 struct mvumi_hw_regs *regs = mhba->regs;
635 u32 tmp;
636 unsigned long before;
637 before = jiffies;
638
639 iowrite32(0, regs->enpointa_mask_reg);
640 tmp = ioread32(regs->arm_to_pciea_msg1);
641 while (tmp != HANDSHAKE_READYSTATE) {
642 iowrite32(DRBL_MU_RESET, regs->pciea_to_arm_drbl_reg);
643 if (time_after(jiffies, before + FW_MAX_DELAY * HZ)) {
644 dev_err(&mhba->pdev->dev,
645 "FW reset failed [0x%x].\n", tmp);
646 return FAILED;
647 }
648
649 msleep(500);
650 rmb();
651 tmp = ioread32(regs->arm_to_pciea_msg1);
652 }
653
654 return SUCCESS;
655 }
656
657 static void mvumi_backup_bar_addr(struct mvumi_hba *mhba)
658 {
659 unsigned char i;
660
661 for (i = 0; i < MAX_BASE_ADDRESS; i++) {
662 pci_read_config_dword(mhba->pdev, 0x10 + i * 4,
663 &mhba->pci_base[i]);
664 }
665 }
666
667 static void mvumi_restore_bar_addr(struct mvumi_hba *mhba)
668 {
669 unsigned char i;
670
671 for (i = 0; i < MAX_BASE_ADDRESS; i++) {
672 if (mhba->pci_base[i])
673 pci_write_config_dword(mhba->pdev, 0x10 + i * 4,
674 mhba->pci_base[i]);
675 }
676 }
677
678 static unsigned int mvumi_pci_set_master(struct pci_dev *pdev)
679 {
680 unsigned int ret = 0;
681 pci_set_master(pdev);
682
683 if (IS_DMA64) {
684 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)))
685 ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
686 } else
687 ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
688
689 return ret;
690 }
691
692 static int mvumi_reset_host_9580(struct mvumi_hba *mhba)
693 {
694 mhba->fw_state = FW_STATE_ABORT;
695
696 iowrite32(0, mhba->regs->reset_enable);
697 iowrite32(0xf, mhba->regs->reset_request);
698
699 iowrite32(0x10, mhba->regs->reset_enable);
700 iowrite32(0x10, mhba->regs->reset_request);
701 msleep(100);
702 pci_disable_device(mhba->pdev);
703
704 if (pci_enable_device(mhba->pdev)) {
705 dev_err(&mhba->pdev->dev, "enable device failed\n");
706 return FAILED;
707 }
708 if (mvumi_pci_set_master(mhba->pdev)) {
709 dev_err(&mhba->pdev->dev, "set master failed\n");
710 return FAILED;
711 }
712 mvumi_restore_bar_addr(mhba);
713 if (mvumi_wait_for_fw(mhba) == FAILED)
714 return FAILED;
715
716 return mvumi_wait_for_outstanding(mhba);
717 }
718
719 static int mvumi_reset_host_9143(struct mvumi_hba *mhba)
720 {
721 return mvumi_wait_for_outstanding(mhba);
722 }
723
724 static int mvumi_host_reset(struct scsi_cmnd *scmd)
725 {
726 struct mvumi_hba *mhba;
727
728 mhba = (struct mvumi_hba *) scmd->device->host->hostdata;
729
730 scmd_printk(KERN_NOTICE, scmd, "RESET -%ld cmd=%x retries=%x\n",
731 scmd->serial_number, scmd->cmnd[0], scmd->retries);
732
733 return mhba->instancet->reset_host(mhba);
734 }
735
736 static int mvumi_issue_blocked_cmd(struct mvumi_hba *mhba,
737 struct mvumi_cmd *cmd)
738 {
739 unsigned long flags;
740
741 cmd->cmd_status = REQ_STATUS_PENDING;
742
743 if (atomic_read(&cmd->sync_cmd)) {
744 dev_err(&mhba->pdev->dev,
745 "last blocked cmd not finished, sync_cmd = %d\n",
746 atomic_read(&cmd->sync_cmd));
747 BUG_ON(1);
748 return -1;
749 }
750 atomic_inc(&cmd->sync_cmd);
751 spin_lock_irqsave(mhba->shost->host_lock, flags);
752 mhba->instancet->fire_cmd(mhba, cmd);
753 spin_unlock_irqrestore(mhba->shost->host_lock, flags);
754
755 wait_event_timeout(mhba->int_cmd_wait_q,
756 (cmd->cmd_status != REQ_STATUS_PENDING),
757 MVUMI_INTERNAL_CMD_WAIT_TIME * HZ);
758
759 /* command timeout */
760 if (atomic_read(&cmd->sync_cmd)) {
761 spin_lock_irqsave(mhba->shost->host_lock, flags);
762 atomic_dec(&cmd->sync_cmd);
763 if (mhba->tag_cmd[cmd->frame->tag]) {
764 mhba->tag_cmd[cmd->frame->tag] = 0;
765 dev_warn(&mhba->pdev->dev, "TIMEOUT:release tag [%d]\n",
766 cmd->frame->tag);
767 tag_release_one(mhba, &mhba->tag_pool, cmd->frame->tag);
768 }
769 if (!list_empty(&cmd->queue_pointer)) {
770 dev_warn(&mhba->pdev->dev,
771 "TIMEOUT:A internal command doesn't send!\n");
772 list_del_init(&cmd->queue_pointer);
773 } else
774 atomic_dec(&mhba->fw_outstanding);
775
776 spin_unlock_irqrestore(mhba->shost->host_lock, flags);
777 }
778 return 0;
779 }
780
781 static void mvumi_release_fw(struct mvumi_hba *mhba)
782 {
783 mvumi_free_cmds(mhba);
784 mvumi_release_mem_resource(mhba);
785 mvumi_unmap_pci_addr(mhba->pdev, mhba->base_addr);
786 pci_free_consistent(mhba->pdev, HSP_MAX_SIZE,
787 mhba->handshake_page, mhba->handshake_page_phys);
788 kfree(mhba->regs);
789 pci_release_regions(mhba->pdev);
790 }
791
792 static unsigned char mvumi_flush_cache(struct mvumi_hba *mhba)
793 {
794 struct mvumi_cmd *cmd;
795 struct mvumi_msg_frame *frame;
796 unsigned char device_id, retry = 0;
797 unsigned char bitcount = sizeof(unsigned char) * 8;
798
799 for (device_id = 0; device_id < mhba->max_target_id; device_id++) {
800 if (!(mhba->target_map[device_id / bitcount] &
801 (1 << (device_id % bitcount))))
802 continue;
803 get_cmd: cmd = mvumi_create_internal_cmd(mhba, 0);
804 if (!cmd) {
805 if (retry++ >= 5) {
806 dev_err(&mhba->pdev->dev, "failed to get memory"
807 " for internal flush cache cmd for "
808 "device %d", device_id);
809 retry = 0;
810 continue;
811 } else
812 goto get_cmd;
813 }
814 cmd->scmd = NULL;
815 cmd->cmd_status = REQ_STATUS_PENDING;
816 atomic_set(&cmd->sync_cmd, 0);
817 frame = cmd->frame;
818 frame->req_function = CL_FUN_SCSI_CMD;
819 frame->device_id = device_id;
820 frame->cmd_flag = CMD_FLAG_NON_DATA;
821 frame->data_transfer_length = 0;
822 frame->cdb_length = MAX_COMMAND_SIZE;
823 memset(frame->cdb, 0, MAX_COMMAND_SIZE);
824 frame->cdb[0] = SCSI_CMD_MARVELL_SPECIFIC;
825 frame->cdb[1] = CDB_CORE_MODULE;
826 frame->cdb[2] = CDB_CORE_SHUTDOWN;
827
828 mvumi_issue_blocked_cmd(mhba, cmd);
829 if (cmd->cmd_status != SAM_STAT_GOOD) {
830 dev_err(&mhba->pdev->dev,
831 "device %d flush cache failed, status=0x%x.\n",
832 device_id, cmd->cmd_status);
833 }
834
835 mvumi_delete_internal_cmd(mhba, cmd);
836 }
837 return 0;
838 }
839
840 static unsigned char
841 mvumi_calculate_checksum(struct mvumi_hs_header *p_header,
842 unsigned short len)
843 {
844 unsigned char *ptr;
845 unsigned char ret = 0, i;
846
847 ptr = (unsigned char *) p_header->frame_content;
848 for (i = 0; i < len; i++) {
849 ret ^= *ptr;
850 ptr++;
851 }
852
853 return ret;
854 }
855
856 static void mvumi_hs_build_page(struct mvumi_hba *mhba,
857 struct mvumi_hs_header *hs_header)
858 {
859 struct mvumi_hs_page2 *hs_page2;
860 struct mvumi_hs_page4 *hs_page4;
861 struct mvumi_hs_page3 *hs_page3;
862 u64 time;
863 u64 local_time;
864
865 switch (hs_header->page_code) {
866 case HS_PAGE_HOST_INFO:
867 hs_page2 = (struct mvumi_hs_page2 *) hs_header;
868 hs_header->frame_length = sizeof(*hs_page2) - 4;
869 memset(hs_header->frame_content, 0, hs_header->frame_length);
870 hs_page2->host_type = 3; /* 3 mean linux*/
871 if (mhba->hba_capability & HS_CAPABILITY_SUPPORT_DYN_SRC)
872 hs_page2->host_cap = 0x08;/* host dynamic source mode */
873 hs_page2->host_ver.ver_major = VER_MAJOR;
874 hs_page2->host_ver.ver_minor = VER_MINOR;
875 hs_page2->host_ver.ver_oem = VER_OEM;
876 hs_page2->host_ver.ver_build = VER_BUILD;
877 hs_page2->system_io_bus = 0;
878 hs_page2->slot_number = 0;
879 hs_page2->intr_level = 0;
880 hs_page2->intr_vector = 0;
881 time = ktime_get_real_seconds();
882 local_time = (time - (sys_tz.tz_minuteswest * 60));
883 hs_page2->seconds_since1970 = local_time;
884 hs_header->checksum = mvumi_calculate_checksum(hs_header,
885 hs_header->frame_length);
886 break;
887
888 case HS_PAGE_FIRM_CTL:
889 hs_page3 = (struct mvumi_hs_page3 *) hs_header;
890 hs_header->frame_length = sizeof(*hs_page3) - 4;
891 memset(hs_header->frame_content, 0, hs_header->frame_length);
892 hs_header->checksum = mvumi_calculate_checksum(hs_header,
893 hs_header->frame_length);
894 break;
895
896 case HS_PAGE_CL_INFO:
897 hs_page4 = (struct mvumi_hs_page4 *) hs_header;
898 hs_header->frame_length = sizeof(*hs_page4) - 4;
899 memset(hs_header->frame_content, 0, hs_header->frame_length);
900 hs_page4->ib_baseaddr_l = lower_32_bits(mhba->ib_list_phys);
901 hs_page4->ib_baseaddr_h = upper_32_bits(mhba->ib_list_phys);
902
903 hs_page4->ob_baseaddr_l = lower_32_bits(mhba->ob_list_phys);
904 hs_page4->ob_baseaddr_h = upper_32_bits(mhba->ob_list_phys);
905 hs_page4->ib_entry_size = mhba->ib_max_size_setting;
906 hs_page4->ob_entry_size = mhba->ob_max_size_setting;
907 if (mhba->hba_capability
908 & HS_CAPABILITY_NEW_PAGE_IO_DEPTH_DEF) {
909 hs_page4->ob_depth = find_first_bit((unsigned long *)
910 &mhba->list_num_io,
911 BITS_PER_LONG);
912 hs_page4->ib_depth = find_first_bit((unsigned long *)
913 &mhba->list_num_io,
914 BITS_PER_LONG);
915 } else {
916 hs_page4->ob_depth = (u8) mhba->list_num_io;
917 hs_page4->ib_depth = (u8) mhba->list_num_io;
918 }
919 hs_header->checksum = mvumi_calculate_checksum(hs_header,
920 hs_header->frame_length);
921 break;
922
923 default:
924 dev_err(&mhba->pdev->dev, "cannot build page, code[0x%x]\n",
925 hs_header->page_code);
926 break;
927 }
928 }
929
930 /**
931 * mvumi_init_data - Initialize requested date for FW
932 * @mhba: Adapter soft state
933 */
934 static int mvumi_init_data(struct mvumi_hba *mhba)
935 {
936 struct mvumi_ob_data *ob_pool;
937 struct mvumi_res *res_mgnt;
938 unsigned int tmp_size, offset, i;
939 void *virmem, *v;
940 dma_addr_t p;
941
942 if (mhba->fw_flag & MVUMI_FW_ALLOC)
943 return 0;
944
945 tmp_size = mhba->ib_max_size * mhba->max_io;
946 if (mhba->hba_capability & HS_CAPABILITY_SUPPORT_DYN_SRC)
947 tmp_size += sizeof(struct mvumi_dyn_list_entry) * mhba->max_io;
948
949 tmp_size += 128 + mhba->ob_max_size * mhba->max_io;
950 tmp_size += 8 + sizeof(u32)*2 + 16;
951
952 res_mgnt = mvumi_alloc_mem_resource(mhba,
953 RESOURCE_UNCACHED_MEMORY, tmp_size);
954 if (!res_mgnt) {
955 dev_err(&mhba->pdev->dev,
956 "failed to allocate memory for inbound list\n");
957 goto fail_alloc_dma_buf;
958 }
959
960 p = res_mgnt->bus_addr;
961 v = res_mgnt->virt_addr;
962 /* ib_list */
963 offset = round_up(p, 128) - p;
964 p += offset;
965 v += offset;
966 mhba->ib_list = v;
967 mhba->ib_list_phys = p;
968 if (mhba->hba_capability & HS_CAPABILITY_SUPPORT_DYN_SRC) {
969 v += sizeof(struct mvumi_dyn_list_entry) * mhba->max_io;
970 p += sizeof(struct mvumi_dyn_list_entry) * mhba->max_io;
971 mhba->ib_frame = v;
972 mhba->ib_frame_phys = p;
973 }
974 v += mhba->ib_max_size * mhba->max_io;
975 p += mhba->ib_max_size * mhba->max_io;
976
977 /* ib shadow */
978 offset = round_up(p, 8) - p;
979 p += offset;
980 v += offset;
981 mhba->ib_shadow = v;
982 mhba->ib_shadow_phys = p;
983 p += sizeof(u32)*2;
984 v += sizeof(u32)*2;
985 /* ob shadow */
986 if (mhba->pdev->device == PCI_DEVICE_ID_MARVELL_MV9580) {
987 offset = round_up(p, 8) - p;
988 p += offset;
989 v += offset;
990 mhba->ob_shadow = v;
991 mhba->ob_shadow_phys = p;
992 p += 8;
993 v += 8;
994 } else {
995 offset = round_up(p, 4) - p;
996 p += offset;
997 v += offset;
998 mhba->ob_shadow = v;
999 mhba->ob_shadow_phys = p;
1000 p += 4;
1001 v += 4;
1002 }
1003
1004 /* ob list */
1005 offset = round_up(p, 128) - p;
1006 p += offset;
1007 v += offset;
1008
1009 mhba->ob_list = v;
1010 mhba->ob_list_phys = p;
1011
1012 /* ob data pool */
1013 tmp_size = mhba->max_io * (mhba->ob_max_size + sizeof(*ob_pool));
1014 tmp_size = round_up(tmp_size, 8);
1015
1016 res_mgnt = mvumi_alloc_mem_resource(mhba,
1017 RESOURCE_CACHED_MEMORY, tmp_size);
1018 if (!res_mgnt) {
1019 dev_err(&mhba->pdev->dev,
1020 "failed to allocate memory for outbound data buffer\n");
1021 goto fail_alloc_dma_buf;
1022 }
1023 virmem = res_mgnt->virt_addr;
1024
1025 for (i = mhba->max_io; i != 0; i--) {
1026 ob_pool = (struct mvumi_ob_data *) virmem;
1027 list_add_tail(&ob_pool->list, &mhba->ob_data_list);
1028 virmem += mhba->ob_max_size + sizeof(*ob_pool);
1029 }
1030
1031 tmp_size = sizeof(unsigned short) * mhba->max_io +
1032 sizeof(struct mvumi_cmd *) * mhba->max_io;
1033 tmp_size += round_up(mhba->max_target_id, sizeof(unsigned char) * 8) /
1034 (sizeof(unsigned char) * 8);
1035
1036 res_mgnt = mvumi_alloc_mem_resource(mhba,
1037 RESOURCE_CACHED_MEMORY, tmp_size);
1038 if (!res_mgnt) {
1039 dev_err(&mhba->pdev->dev,
1040 "failed to allocate memory for tag and target map\n");
1041 goto fail_alloc_dma_buf;
1042 }
1043
1044 virmem = res_mgnt->virt_addr;
1045 mhba->tag_pool.stack = virmem;
1046 mhba->tag_pool.size = mhba->max_io;
1047 tag_init(&mhba->tag_pool, mhba->max_io);
1048 virmem += sizeof(unsigned short) * mhba->max_io;
1049
1050 mhba->tag_cmd = virmem;
1051 virmem += sizeof(struct mvumi_cmd *) * mhba->max_io;
1052
1053 mhba->target_map = virmem;
1054
1055 mhba->fw_flag |= MVUMI_FW_ALLOC;
1056 return 0;
1057
1058 fail_alloc_dma_buf:
1059 mvumi_release_mem_resource(mhba);
1060 return -1;
1061 }
1062
1063 static int mvumi_hs_process_page(struct mvumi_hba *mhba,
1064 struct mvumi_hs_header *hs_header)
1065 {
1066 struct mvumi_hs_page1 *hs_page1;
1067 unsigned char page_checksum;
1068
1069 page_checksum = mvumi_calculate_checksum(hs_header,
1070 hs_header->frame_length);
1071 if (page_checksum != hs_header->checksum) {
1072 dev_err(&mhba->pdev->dev, "checksum error\n");
1073 return -1;
1074 }
1075
1076 switch (hs_header->page_code) {
1077 case HS_PAGE_FIRM_CAP:
1078 hs_page1 = (struct mvumi_hs_page1 *) hs_header;
1079
1080 mhba->max_io = hs_page1->max_io_support;
1081 mhba->list_num_io = hs_page1->cl_inout_list_depth;
1082 mhba->max_transfer_size = hs_page1->max_transfer_size;
1083 mhba->max_target_id = hs_page1->max_devices_support;
1084 mhba->hba_capability = hs_page1->capability;
1085 mhba->ib_max_size_setting = hs_page1->cl_in_max_entry_size;
1086 mhba->ib_max_size = (1 << hs_page1->cl_in_max_entry_size) << 2;
1087
1088 mhba->ob_max_size_setting = hs_page1->cl_out_max_entry_size;
1089 mhba->ob_max_size = (1 << hs_page1->cl_out_max_entry_size) << 2;
1090
1091 dev_dbg(&mhba->pdev->dev, "FW version:%d\n",
1092 hs_page1->fw_ver.ver_build);
1093
1094 if (mhba->hba_capability & HS_CAPABILITY_SUPPORT_COMPACT_SG)
1095 mhba->eot_flag = 22;
1096 else
1097 mhba->eot_flag = 27;
1098 if (mhba->hba_capability & HS_CAPABILITY_NEW_PAGE_IO_DEPTH_DEF)
1099 mhba->list_num_io = 1 << hs_page1->cl_inout_list_depth;
1100 break;
1101 default:
1102 dev_err(&mhba->pdev->dev, "handshake: page code error\n");
1103 return -1;
1104 }
1105 return 0;
1106 }
1107
1108 /**
1109 * mvumi_handshake - Move the FW to READY state
1110 * @mhba: Adapter soft state
1111 *
1112 * During the initialization, FW passes can potentially be in any one of
1113 * several possible states. If the FW in operational, waiting-for-handshake
1114 * states, driver must take steps to bring it to ready state. Otherwise, it
1115 * has to wait for the ready state.
1116 */
1117 static int mvumi_handshake(struct mvumi_hba *mhba)
1118 {
1119 unsigned int hs_state, tmp, hs_fun;
1120 struct mvumi_hs_header *hs_header;
1121 struct mvumi_hw_regs *regs = mhba->regs;
1122
1123 if (mhba->fw_state == FW_STATE_STARTING)
1124 hs_state = HS_S_START;
1125 else {
1126 tmp = ioread32(regs->arm_to_pciea_msg0);
1127 hs_state = HS_GET_STATE(tmp);
1128 dev_dbg(&mhba->pdev->dev, "handshake state[0x%x].\n", hs_state);
1129 if (HS_GET_STATUS(tmp) != HS_STATUS_OK) {
1130 mhba->fw_state = FW_STATE_STARTING;
1131 return -1;
1132 }
1133 }
1134
1135 hs_fun = 0;
1136 switch (hs_state) {
1137 case HS_S_START:
1138 mhba->fw_state = FW_STATE_HANDSHAKING;
1139 HS_SET_STATUS(hs_fun, HS_STATUS_OK);
1140 HS_SET_STATE(hs_fun, HS_S_RESET);
1141 iowrite32(HANDSHAKE_SIGNATURE, regs->pciea_to_arm_msg1);
1142 iowrite32(hs_fun, regs->pciea_to_arm_msg0);
1143 iowrite32(DRBL_HANDSHAKE, regs->pciea_to_arm_drbl_reg);
1144 break;
1145
1146 case HS_S_RESET:
1147 iowrite32(lower_32_bits(mhba->handshake_page_phys),
1148 regs->pciea_to_arm_msg1);
1149 iowrite32(upper_32_bits(mhba->handshake_page_phys),
1150 regs->arm_to_pciea_msg1);
1151 HS_SET_STATUS(hs_fun, HS_STATUS_OK);
1152 HS_SET_STATE(hs_fun, HS_S_PAGE_ADDR);
1153 iowrite32(hs_fun, regs->pciea_to_arm_msg0);
1154 iowrite32(DRBL_HANDSHAKE, regs->pciea_to_arm_drbl_reg);
1155 break;
1156
1157 case HS_S_PAGE_ADDR:
1158 case HS_S_QUERY_PAGE:
1159 case HS_S_SEND_PAGE:
1160 hs_header = (struct mvumi_hs_header *) mhba->handshake_page;
1161 if (hs_header->page_code == HS_PAGE_FIRM_CAP) {
1162 mhba->hba_total_pages =
1163 ((struct mvumi_hs_page1 *) hs_header)->total_pages;
1164
1165 if (mhba->hba_total_pages == 0)
1166 mhba->hba_total_pages = HS_PAGE_TOTAL-1;
1167 }
1168
1169 if (hs_state == HS_S_QUERY_PAGE) {
1170 if (mvumi_hs_process_page(mhba, hs_header)) {
1171 HS_SET_STATE(hs_fun, HS_S_ABORT);
1172 return -1;
1173 }
1174 if (mvumi_init_data(mhba)) {
1175 HS_SET_STATE(hs_fun, HS_S_ABORT);
1176 return -1;
1177 }
1178 } else if (hs_state == HS_S_PAGE_ADDR) {
1179 hs_header->page_code = 0;
1180 mhba->hba_total_pages = HS_PAGE_TOTAL-1;
1181 }
1182
1183 if ((hs_header->page_code + 1) <= mhba->hba_total_pages) {
1184 hs_header->page_code++;
1185 if (hs_header->page_code != HS_PAGE_FIRM_CAP) {
1186 mvumi_hs_build_page(mhba, hs_header);
1187 HS_SET_STATE(hs_fun, HS_S_SEND_PAGE);
1188 } else
1189 HS_SET_STATE(hs_fun, HS_S_QUERY_PAGE);
1190 } else
1191 HS_SET_STATE(hs_fun, HS_S_END);
1192
1193 HS_SET_STATUS(hs_fun, HS_STATUS_OK);
1194 iowrite32(hs_fun, regs->pciea_to_arm_msg0);
1195 iowrite32(DRBL_HANDSHAKE, regs->pciea_to_arm_drbl_reg);
1196 break;
1197
1198 case HS_S_END:
1199 /* Set communication list ISR */
1200 tmp = ioread32(regs->enpointa_mask_reg);
1201 tmp |= regs->int_comaout | regs->int_comaerr;
1202 iowrite32(tmp, regs->enpointa_mask_reg);
1203 iowrite32(mhba->list_num_io, mhba->ib_shadow);
1204 /* Set InBound List Available count shadow */
1205 iowrite32(lower_32_bits(mhba->ib_shadow_phys),
1206 regs->inb_aval_count_basel);
1207 iowrite32(upper_32_bits(mhba->ib_shadow_phys),
1208 regs->inb_aval_count_baseh);
1209
1210 if (mhba->pdev->device == PCI_DEVICE_ID_MARVELL_MV9143) {
1211 /* Set OutBound List Available count shadow */
1212 iowrite32((mhba->list_num_io-1) |
1213 regs->cl_pointer_toggle,
1214 mhba->ob_shadow);
1215 iowrite32(lower_32_bits(mhba->ob_shadow_phys),
1216 regs->outb_copy_basel);
1217 iowrite32(upper_32_bits(mhba->ob_shadow_phys),
1218 regs->outb_copy_baseh);
1219 }
1220
1221 mhba->ib_cur_slot = (mhba->list_num_io - 1) |
1222 regs->cl_pointer_toggle;
1223 mhba->ob_cur_slot = (mhba->list_num_io - 1) |
1224 regs->cl_pointer_toggle;
1225 mhba->fw_state = FW_STATE_STARTED;
1226
1227 break;
1228 default:
1229 dev_err(&mhba->pdev->dev, "unknown handshake state [0x%x].\n",
1230 hs_state);
1231 return -1;
1232 }
1233 return 0;
1234 }
1235
1236 static unsigned char mvumi_handshake_event(struct mvumi_hba *mhba)
1237 {
1238 unsigned int isr_status;
1239 unsigned long before;
1240
1241 before = jiffies;
1242 mvumi_handshake(mhba);
1243 do {
1244 isr_status = mhba->instancet->read_fw_status_reg(mhba);
1245
1246 if (mhba->fw_state == FW_STATE_STARTED)
1247 return 0;
1248 if (time_after(jiffies, before + FW_MAX_DELAY * HZ)) {
1249 dev_err(&mhba->pdev->dev,
1250 "no handshake response at state 0x%x.\n",
1251 mhba->fw_state);
1252 dev_err(&mhba->pdev->dev,
1253 "isr : global=0x%x,status=0x%x.\n",
1254 mhba->global_isr, isr_status);
1255 return -1;
1256 }
1257 rmb();
1258 usleep_range(1000, 2000);
1259 } while (!(isr_status & DRBL_HANDSHAKE_ISR));
1260
1261 return 0;
1262 }
1263
1264 static unsigned char mvumi_check_handshake(struct mvumi_hba *mhba)
1265 {
1266 unsigned int tmp;
1267 unsigned long before;
1268
1269 before = jiffies;
1270 tmp = ioread32(mhba->regs->arm_to_pciea_msg1);
1271 while ((tmp != HANDSHAKE_READYSTATE) && (tmp != HANDSHAKE_DONESTATE)) {
1272 if (tmp != HANDSHAKE_READYSTATE)
1273 iowrite32(DRBL_MU_RESET,
1274 mhba->regs->pciea_to_arm_drbl_reg);
1275 if (time_after(jiffies, before + FW_MAX_DELAY * HZ)) {
1276 dev_err(&mhba->pdev->dev,
1277 "invalid signature [0x%x].\n", tmp);
1278 return -1;
1279 }
1280 usleep_range(1000, 2000);
1281 rmb();
1282 tmp = ioread32(mhba->regs->arm_to_pciea_msg1);
1283 }
1284
1285 mhba->fw_state = FW_STATE_STARTING;
1286 dev_dbg(&mhba->pdev->dev, "start firmware handshake...\n");
1287 do {
1288 if (mvumi_handshake_event(mhba)) {
1289 dev_err(&mhba->pdev->dev,
1290 "handshake failed at state 0x%x.\n",
1291 mhba->fw_state);
1292 return -1;
1293 }
1294 } while (mhba->fw_state != FW_STATE_STARTED);
1295
1296 dev_dbg(&mhba->pdev->dev, "firmware handshake done\n");
1297
1298 return 0;
1299 }
1300
1301 static unsigned char mvumi_start(struct mvumi_hba *mhba)
1302 {
1303 unsigned int tmp;
1304 struct mvumi_hw_regs *regs = mhba->regs;
1305
1306 /* clear Door bell */
1307 tmp = ioread32(regs->arm_to_pciea_drbl_reg);
1308 iowrite32(tmp, regs->arm_to_pciea_drbl_reg);
1309
1310 iowrite32(regs->int_drbl_int_mask, regs->arm_to_pciea_mask_reg);
1311 tmp = ioread32(regs->enpointa_mask_reg) | regs->int_dl_cpu2pciea;
1312 iowrite32(tmp, regs->enpointa_mask_reg);
1313 msleep(100);
1314 if (mvumi_check_handshake(mhba))
1315 return -1;
1316
1317 return 0;
1318 }
1319
1320 /**
1321 * mvumi_complete_cmd - Completes a command
1322 * @mhba: Adapter soft state
1323 * @cmd: Command to be completed
1324 */
1325 static void mvumi_complete_cmd(struct mvumi_hba *mhba, struct mvumi_cmd *cmd,
1326 struct mvumi_rsp_frame *ob_frame)
1327 {
1328 struct scsi_cmnd *scmd = cmd->scmd;
1329
1330 cmd->scmd->SCp.ptr = NULL;
1331 scmd->result = ob_frame->req_status;
1332
1333 switch (ob_frame->req_status) {
1334 case SAM_STAT_GOOD:
1335 scmd->result |= DID_OK << 16;
1336 break;
1337 case SAM_STAT_BUSY:
1338 scmd->result |= DID_BUS_BUSY << 16;
1339 break;
1340 case SAM_STAT_CHECK_CONDITION:
1341 scmd->result |= (DID_OK << 16);
1342 if (ob_frame->rsp_flag & CL_RSP_FLAG_SENSEDATA) {
1343 memcpy(cmd->scmd->sense_buffer, ob_frame->payload,
1344 sizeof(struct mvumi_sense_data));
1345 scmd->result |= (DRIVER_SENSE << 24);
1346 }
1347 break;
1348 default:
1349 scmd->result |= (DRIVER_INVALID << 24) | (DID_ABORT << 16);
1350 break;
1351 }
1352
1353 if (scsi_bufflen(scmd)) {
1354 if (scsi_sg_count(scmd)) {
1355 pci_unmap_sg(mhba->pdev,
1356 scsi_sglist(scmd),
1357 scsi_sg_count(scmd),
1358 (int) scmd->sc_data_direction);
1359 } else {
1360 pci_unmap_single(mhba->pdev,
1361 scmd->SCp.dma_handle,
1362 scsi_bufflen(scmd),
1363 (int) scmd->sc_data_direction);
1364
1365 scmd->SCp.dma_handle = 0;
1366 }
1367 }
1368 cmd->scmd->scsi_done(scmd);
1369 mvumi_return_cmd(mhba, cmd);
1370 }
1371
1372 static void mvumi_complete_internal_cmd(struct mvumi_hba *mhba,
1373 struct mvumi_cmd *cmd,
1374 struct mvumi_rsp_frame *ob_frame)
1375 {
1376 if (atomic_read(&cmd->sync_cmd)) {
1377 cmd->cmd_status = ob_frame->req_status;
1378
1379 if ((ob_frame->req_status == SAM_STAT_CHECK_CONDITION) &&
1380 (ob_frame->rsp_flag & CL_RSP_FLAG_SENSEDATA) &&
1381 cmd->data_buf) {
1382 memcpy(cmd->data_buf, ob_frame->payload,
1383 sizeof(struct mvumi_sense_data));
1384 }
1385 atomic_dec(&cmd->sync_cmd);
1386 wake_up(&mhba->int_cmd_wait_q);
1387 }
1388 }
1389
1390 static void mvumi_show_event(struct mvumi_hba *mhba,
1391 struct mvumi_driver_event *ptr)
1392 {
1393 unsigned int i;
1394
1395 dev_warn(&mhba->pdev->dev,
1396 "Event[0x%x] id[0x%x] severity[0x%x] device id[0x%x]\n",
1397 ptr->sequence_no, ptr->event_id, ptr->severity, ptr->device_id);
1398 if (ptr->param_count) {
1399 printk(KERN_WARNING "Event param(len 0x%x): ",
1400 ptr->param_count);
1401 for (i = 0; i < ptr->param_count; i++)
1402 printk(KERN_WARNING "0x%x ", ptr->params[i]);
1403
1404 printk(KERN_WARNING "\n");
1405 }
1406
1407 if (ptr->sense_data_length) {
1408 printk(KERN_WARNING "Event sense data(len 0x%x): ",
1409 ptr->sense_data_length);
1410 for (i = 0; i < ptr->sense_data_length; i++)
1411 printk(KERN_WARNING "0x%x ", ptr->sense_data[i]);
1412 printk(KERN_WARNING "\n");
1413 }
1414 }
1415
1416 static int mvumi_handle_hotplug(struct mvumi_hba *mhba, u16 devid, int status)
1417 {
1418 struct scsi_device *sdev;
1419 int ret = -1;
1420
1421 if (status == DEVICE_OFFLINE) {
1422 sdev = scsi_device_lookup(mhba->shost, 0, devid, 0);
1423 if (sdev) {
1424 dev_dbg(&mhba->pdev->dev, "remove disk %d-%d-%d.\n", 0,
1425 sdev->id, 0);
1426 scsi_remove_device(sdev);
1427 scsi_device_put(sdev);
1428 ret = 0;
1429 } else
1430 dev_err(&mhba->pdev->dev, " no disk[%d] to remove\n",
1431 devid);
1432 } else if (status == DEVICE_ONLINE) {
1433 sdev = scsi_device_lookup(mhba->shost, 0, devid, 0);
1434 if (!sdev) {
1435 scsi_add_device(mhba->shost, 0, devid, 0);
1436 dev_dbg(&mhba->pdev->dev, " add disk %d-%d-%d.\n", 0,
1437 devid, 0);
1438 ret = 0;
1439 } else {
1440 dev_err(&mhba->pdev->dev, " don't add disk %d-%d-%d.\n",
1441 0, devid, 0);
1442 scsi_device_put(sdev);
1443 }
1444 }
1445 return ret;
1446 }
1447
1448 static u64 mvumi_inquiry(struct mvumi_hba *mhba,
1449 unsigned int id, struct mvumi_cmd *cmd)
1450 {
1451 struct mvumi_msg_frame *frame;
1452 u64 wwid = 0;
1453 int cmd_alloc = 0;
1454 int data_buf_len = 64;
1455
1456 if (!cmd) {
1457 cmd = mvumi_create_internal_cmd(mhba, data_buf_len);
1458 if (cmd)
1459 cmd_alloc = 1;
1460 else
1461 return 0;
1462 } else {
1463 memset(cmd->data_buf, 0, data_buf_len);
1464 }
1465 cmd->scmd = NULL;
1466 cmd->cmd_status = REQ_STATUS_PENDING;
1467 atomic_set(&cmd->sync_cmd, 0);
1468 frame = cmd->frame;
1469 frame->device_id = (u16) id;
1470 frame->cmd_flag = CMD_FLAG_DATA_IN;
1471 frame->req_function = CL_FUN_SCSI_CMD;
1472 frame->cdb_length = 6;
1473 frame->data_transfer_length = MVUMI_INQUIRY_LENGTH;
1474 memset(frame->cdb, 0, frame->cdb_length);
1475 frame->cdb[0] = INQUIRY;
1476 frame->cdb[4] = frame->data_transfer_length;
1477
1478 mvumi_issue_blocked_cmd(mhba, cmd);
1479
1480 if (cmd->cmd_status == SAM_STAT_GOOD) {
1481 if (mhba->pdev->device == PCI_DEVICE_ID_MARVELL_MV9143)
1482 wwid = id + 1;
1483 else
1484 memcpy((void *)&wwid,
1485 (cmd->data_buf + MVUMI_INQUIRY_UUID_OFF),
1486 MVUMI_INQUIRY_UUID_LEN);
1487 dev_dbg(&mhba->pdev->dev,
1488 "inquiry device(0:%d:0) wwid(%llx)\n", id, wwid);
1489 } else {
1490 wwid = 0;
1491 }
1492 if (cmd_alloc)
1493 mvumi_delete_internal_cmd(mhba, cmd);
1494
1495 return wwid;
1496 }
1497
1498 static void mvumi_detach_devices(struct mvumi_hba *mhba)
1499 {
1500 struct mvumi_device *mv_dev = NULL , *dev_next;
1501 struct scsi_device *sdev = NULL;
1502
1503 mutex_lock(&mhba->device_lock);
1504
1505 /* detach Hard Disk */
1506 list_for_each_entry_safe(mv_dev, dev_next,
1507 &mhba->shost_dev_list, list) {
1508 mvumi_handle_hotplug(mhba, mv_dev->id, DEVICE_OFFLINE);
1509 list_del_init(&mv_dev->list);
1510 dev_dbg(&mhba->pdev->dev, "release device(0:%d:0) wwid(%llx)\n",
1511 mv_dev->id, mv_dev->wwid);
1512 kfree(mv_dev);
1513 }
1514 list_for_each_entry_safe(mv_dev, dev_next, &mhba->mhba_dev_list, list) {
1515 list_del_init(&mv_dev->list);
1516 dev_dbg(&mhba->pdev->dev, "release device(0:%d:0) wwid(%llx)\n",
1517 mv_dev->id, mv_dev->wwid);
1518 kfree(mv_dev);
1519 }
1520
1521 /* detach virtual device */
1522 if (mhba->pdev->device == PCI_DEVICE_ID_MARVELL_MV9580)
1523 sdev = scsi_device_lookup(mhba->shost, 0,
1524 mhba->max_target_id - 1, 0);
1525
1526 if (sdev) {
1527 scsi_remove_device(sdev);
1528 scsi_device_put(sdev);
1529 }
1530
1531 mutex_unlock(&mhba->device_lock);
1532 }
1533
1534 static void mvumi_rescan_devices(struct mvumi_hba *mhba, int id)
1535 {
1536 struct scsi_device *sdev;
1537
1538 sdev = scsi_device_lookup(mhba->shost, 0, id, 0);
1539 if (sdev) {
1540 scsi_rescan_device(&sdev->sdev_gendev);
1541 scsi_device_put(sdev);
1542 }
1543 }
1544
1545 static int mvumi_match_devices(struct mvumi_hba *mhba, int id, u64 wwid)
1546 {
1547 struct mvumi_device *mv_dev = NULL;
1548
1549 list_for_each_entry(mv_dev, &mhba->shost_dev_list, list) {
1550 if (mv_dev->wwid == wwid) {
1551 if (mv_dev->id != id) {
1552 dev_err(&mhba->pdev->dev,
1553 "%s has same wwid[%llx] ,"
1554 " but different id[%d %d]\n",
1555 __func__, mv_dev->wwid, mv_dev->id, id);
1556 return -1;
1557 } else {
1558 if (mhba->pdev->device ==
1559 PCI_DEVICE_ID_MARVELL_MV9143)
1560 mvumi_rescan_devices(mhba, id);
1561 return 1;
1562 }
1563 }
1564 }
1565 return 0;
1566 }
1567
1568 static void mvumi_remove_devices(struct mvumi_hba *mhba, int id)
1569 {
1570 struct mvumi_device *mv_dev = NULL, *dev_next;
1571
1572 list_for_each_entry_safe(mv_dev, dev_next,
1573 &mhba->shost_dev_list, list) {
1574 if (mv_dev->id == id) {
1575 dev_dbg(&mhba->pdev->dev,
1576 "detach device(0:%d:0) wwid(%llx) from HOST\n",
1577 mv_dev->id, mv_dev->wwid);
1578 mvumi_handle_hotplug(mhba, mv_dev->id, DEVICE_OFFLINE);
1579 list_del_init(&mv_dev->list);
1580 kfree(mv_dev);
1581 }
1582 }
1583 }
1584
1585 static int mvumi_probe_devices(struct mvumi_hba *mhba)
1586 {
1587 int id, maxid;
1588 u64 wwid = 0;
1589 struct mvumi_device *mv_dev = NULL;
1590 struct mvumi_cmd *cmd = NULL;
1591 int found = 0;
1592
1593 cmd = mvumi_create_internal_cmd(mhba, 64);
1594 if (!cmd)
1595 return -1;
1596
1597 if (mhba->pdev->device == PCI_DEVICE_ID_MARVELL_MV9143)
1598 maxid = mhba->max_target_id;
1599 else
1600 maxid = mhba->max_target_id - 1;
1601
1602 for (id = 0; id < maxid; id++) {
1603 wwid = mvumi_inquiry(mhba, id, cmd);
1604 if (!wwid) {
1605 /* device no response, remove it */
1606 mvumi_remove_devices(mhba, id);
1607 } else {
1608 /* device response, add it */
1609 found = mvumi_match_devices(mhba, id, wwid);
1610 if (!found) {
1611 mvumi_remove_devices(mhba, id);
1612 mv_dev = kzalloc(sizeof(struct mvumi_device),
1613 GFP_KERNEL);
1614 if (!mv_dev) {
1615 dev_err(&mhba->pdev->dev,
1616 "%s alloc mv_dev failed\n",
1617 __func__);
1618 continue;
1619 }
1620 mv_dev->id = id;
1621 mv_dev->wwid = wwid;
1622 mv_dev->sdev = NULL;
1623 INIT_LIST_HEAD(&mv_dev->list);
1624 list_add_tail(&mv_dev->list,
1625 &mhba->mhba_dev_list);
1626 dev_dbg(&mhba->pdev->dev,
1627 "probe a new device(0:%d:0)"
1628 " wwid(%llx)\n", id, mv_dev->wwid);
1629 } else if (found == -1)
1630 return -1;
1631 else
1632 continue;
1633 }
1634 }
1635
1636 if (cmd)
1637 mvumi_delete_internal_cmd(mhba, cmd);
1638
1639 return 0;
1640 }
1641
1642 static int mvumi_rescan_bus(void *data)
1643 {
1644 int ret = 0;
1645 struct mvumi_hba *mhba = (struct mvumi_hba *) data;
1646 struct mvumi_device *mv_dev = NULL , *dev_next;
1647
1648 while (!kthread_should_stop()) {
1649
1650 set_current_state(TASK_INTERRUPTIBLE);
1651 if (!atomic_read(&mhba->pnp_count))
1652 schedule();
1653 msleep(1000);
1654 atomic_set(&mhba->pnp_count, 0);
1655 __set_current_state(TASK_RUNNING);
1656
1657 mutex_lock(&mhba->device_lock);
1658 ret = mvumi_probe_devices(mhba);
1659 if (!ret) {
1660 list_for_each_entry_safe(mv_dev, dev_next,
1661 &mhba->mhba_dev_list, list) {
1662 if (mvumi_handle_hotplug(mhba, mv_dev->id,
1663 DEVICE_ONLINE)) {
1664 dev_err(&mhba->pdev->dev,
1665 "%s add device(0:%d:0) failed"
1666 "wwid(%llx) has exist\n",
1667 __func__,
1668 mv_dev->id, mv_dev->wwid);
1669 list_del_init(&mv_dev->list);
1670 kfree(mv_dev);
1671 } else {
1672 list_move_tail(&mv_dev->list,
1673 &mhba->shost_dev_list);
1674 }
1675 }
1676 }
1677 mutex_unlock(&mhba->device_lock);
1678 }
1679 return 0;
1680 }
1681
1682 static void mvumi_proc_msg(struct mvumi_hba *mhba,
1683 struct mvumi_hotplug_event *param)
1684 {
1685 u16 size = param->size;
1686 const unsigned long *ar_bitmap;
1687 const unsigned long *re_bitmap;
1688 int index;
1689
1690 if (mhba->fw_flag & MVUMI_FW_ATTACH) {
1691 index = -1;
1692 ar_bitmap = (const unsigned long *) param->bitmap;
1693 re_bitmap = (const unsigned long *) &param->bitmap[size >> 3];
1694
1695 mutex_lock(&mhba->sas_discovery_mutex);
1696 do {
1697 index = find_next_zero_bit(ar_bitmap, size, index + 1);
1698 if (index >= size)
1699 break;
1700 mvumi_handle_hotplug(mhba, index, DEVICE_ONLINE);
1701 } while (1);
1702
1703 index = -1;
1704 do {
1705 index = find_next_zero_bit(re_bitmap, size, index + 1);
1706 if (index >= size)
1707 break;
1708 mvumi_handle_hotplug(mhba, index, DEVICE_OFFLINE);
1709 } while (1);
1710 mutex_unlock(&mhba->sas_discovery_mutex);
1711 }
1712 }
1713
1714 static void mvumi_notification(struct mvumi_hba *mhba, u8 msg, void *buffer)
1715 {
1716 if (msg == APICDB1_EVENT_GETEVENT) {
1717 int i, count;
1718 struct mvumi_driver_event *param = NULL;
1719 struct mvumi_event_req *er = buffer;
1720 count = er->count;
1721 if (count > MAX_EVENTS_RETURNED) {
1722 dev_err(&mhba->pdev->dev, "event count[0x%x] is bigger"
1723 " than max event count[0x%x].\n",
1724 count, MAX_EVENTS_RETURNED);
1725 return;
1726 }
1727 for (i = 0; i < count; i++) {
1728 param = &er->events[i];
1729 mvumi_show_event(mhba, param);
1730 }
1731 } else if (msg == APICDB1_HOST_GETEVENT) {
1732 mvumi_proc_msg(mhba, buffer);
1733 }
1734 }
1735
1736 static int mvumi_get_event(struct mvumi_hba *mhba, unsigned char msg)
1737 {
1738 struct mvumi_cmd *cmd;
1739 struct mvumi_msg_frame *frame;
1740
1741 cmd = mvumi_create_internal_cmd(mhba, 512);
1742 if (!cmd)
1743 return -1;
1744 cmd->scmd = NULL;
1745 cmd->cmd_status = REQ_STATUS_PENDING;
1746 atomic_set(&cmd->sync_cmd, 0);
1747 frame = cmd->frame;
1748 frame->device_id = 0;
1749 frame->cmd_flag = CMD_FLAG_DATA_IN;
1750 frame->req_function = CL_FUN_SCSI_CMD;
1751 frame->cdb_length = MAX_COMMAND_SIZE;
1752 frame->data_transfer_length = sizeof(struct mvumi_event_req);
1753 memset(frame->cdb, 0, MAX_COMMAND_SIZE);
1754 frame->cdb[0] = APICDB0_EVENT;
1755 frame->cdb[1] = msg;
1756 mvumi_issue_blocked_cmd(mhba, cmd);
1757
1758 if (cmd->cmd_status != SAM_STAT_GOOD)
1759 dev_err(&mhba->pdev->dev, "get event failed, status=0x%x.\n",
1760 cmd->cmd_status);
1761 else
1762 mvumi_notification(mhba, cmd->frame->cdb[1], cmd->data_buf);
1763
1764 mvumi_delete_internal_cmd(mhba, cmd);
1765 return 0;
1766 }
1767
1768 static void mvumi_scan_events(struct work_struct *work)
1769 {
1770 struct mvumi_events_wq *mu_ev =
1771 container_of(work, struct mvumi_events_wq, work_q);
1772
1773 mvumi_get_event(mu_ev->mhba, mu_ev->event);
1774 kfree(mu_ev);
1775 }
1776
1777 static void mvumi_launch_events(struct mvumi_hba *mhba, u32 isr_status)
1778 {
1779 struct mvumi_events_wq *mu_ev;
1780
1781 while (isr_status & (DRBL_BUS_CHANGE | DRBL_EVENT_NOTIFY)) {
1782 if (isr_status & DRBL_BUS_CHANGE) {
1783 atomic_inc(&mhba->pnp_count);
1784 wake_up_process(mhba->dm_thread);
1785 isr_status &= ~(DRBL_BUS_CHANGE);
1786 continue;
1787 }
1788
1789 mu_ev = kzalloc(sizeof(*mu_ev), GFP_ATOMIC);
1790 if (mu_ev) {
1791 INIT_WORK(&mu_ev->work_q, mvumi_scan_events);
1792 mu_ev->mhba = mhba;
1793 mu_ev->event = APICDB1_EVENT_GETEVENT;
1794 isr_status &= ~(DRBL_EVENT_NOTIFY);
1795 mu_ev->param = NULL;
1796 schedule_work(&mu_ev->work_q);
1797 }
1798 }
1799 }
1800
1801 static void mvumi_handle_clob(struct mvumi_hba *mhba)
1802 {
1803 struct mvumi_rsp_frame *ob_frame;
1804 struct mvumi_cmd *cmd;
1805 struct mvumi_ob_data *pool;
1806
1807 while (!list_empty(&mhba->free_ob_list)) {
1808 pool = list_first_entry(&mhba->free_ob_list,
1809 struct mvumi_ob_data, list);
1810 list_del_init(&pool->list);
1811 list_add_tail(&pool->list, &mhba->ob_data_list);
1812
1813 ob_frame = (struct mvumi_rsp_frame *) &pool->data[0];
1814 cmd = mhba->tag_cmd[ob_frame->tag];
1815
1816 atomic_dec(&mhba->fw_outstanding);
1817 mhba->tag_cmd[ob_frame->tag] = 0;
1818 tag_release_one(mhba, &mhba->tag_pool, ob_frame->tag);
1819 if (cmd->scmd)
1820 mvumi_complete_cmd(mhba, cmd, ob_frame);
1821 else
1822 mvumi_complete_internal_cmd(mhba, cmd, ob_frame);
1823 }
1824 mhba->instancet->fire_cmd(mhba, NULL);
1825 }
1826
1827 static irqreturn_t mvumi_isr_handler(int irq, void *devp)
1828 {
1829 struct mvumi_hba *mhba = (struct mvumi_hba *) devp;
1830 unsigned long flags;
1831
1832 spin_lock_irqsave(mhba->shost->host_lock, flags);
1833 if (unlikely(mhba->instancet->clear_intr(mhba) || !mhba->global_isr)) {
1834 spin_unlock_irqrestore(mhba->shost->host_lock, flags);
1835 return IRQ_NONE;
1836 }
1837
1838 if (mhba->global_isr & mhba->regs->int_dl_cpu2pciea) {
1839 if (mhba->isr_status & (DRBL_BUS_CHANGE | DRBL_EVENT_NOTIFY))
1840 mvumi_launch_events(mhba, mhba->isr_status);
1841 if (mhba->isr_status & DRBL_HANDSHAKE_ISR) {
1842 dev_warn(&mhba->pdev->dev, "enter handshake again!\n");
1843 mvumi_handshake(mhba);
1844 }
1845
1846 }
1847
1848 if (mhba->global_isr & mhba->regs->int_comaout)
1849 mvumi_receive_ob_list_entry(mhba);
1850
1851 mhba->global_isr = 0;
1852 mhba->isr_status = 0;
1853 if (mhba->fw_state == FW_STATE_STARTED)
1854 mvumi_handle_clob(mhba);
1855 spin_unlock_irqrestore(mhba->shost->host_lock, flags);
1856 return IRQ_HANDLED;
1857 }
1858
1859 static enum mvumi_qc_result mvumi_send_command(struct mvumi_hba *mhba,
1860 struct mvumi_cmd *cmd)
1861 {
1862 void *ib_entry;
1863 struct mvumi_msg_frame *ib_frame;
1864 unsigned int frame_len;
1865
1866 ib_frame = cmd->frame;
1867 if (unlikely(mhba->fw_state != FW_STATE_STARTED)) {
1868 dev_dbg(&mhba->pdev->dev, "firmware not ready.\n");
1869 return MV_QUEUE_COMMAND_RESULT_NO_RESOURCE;
1870 }
1871 if (tag_is_empty(&mhba->tag_pool)) {
1872 dev_dbg(&mhba->pdev->dev, "no free tag.\n");
1873 return MV_QUEUE_COMMAND_RESULT_NO_RESOURCE;
1874 }
1875 mvumi_get_ib_list_entry(mhba, &ib_entry);
1876
1877 cmd->frame->tag = tag_get_one(mhba, &mhba->tag_pool);
1878 cmd->frame->request_id = mhba->io_seq++;
1879 cmd->request_id = cmd->frame->request_id;
1880 mhba->tag_cmd[cmd->frame->tag] = cmd;
1881 frame_len = sizeof(*ib_frame) - 4 +
1882 ib_frame->sg_counts * sizeof(struct mvumi_sgl);
1883 if (mhba->hba_capability & HS_CAPABILITY_SUPPORT_DYN_SRC) {
1884 struct mvumi_dyn_list_entry *dle;
1885 dle = ib_entry;
1886 dle->src_low_addr =
1887 cpu_to_le32(lower_32_bits(cmd->frame_phys));
1888 dle->src_high_addr =
1889 cpu_to_le32(upper_32_bits(cmd->frame_phys));
1890 dle->if_length = (frame_len >> 2) & 0xFFF;
1891 } else {
1892 memcpy(ib_entry, ib_frame, frame_len);
1893 }
1894 return MV_QUEUE_COMMAND_RESULT_SENT;
1895 }
1896
1897 static void mvumi_fire_cmd(struct mvumi_hba *mhba, struct mvumi_cmd *cmd)
1898 {
1899 unsigned short num_of_cl_sent = 0;
1900 unsigned int count;
1901 enum mvumi_qc_result result;
1902
1903 if (cmd)
1904 list_add_tail(&cmd->queue_pointer, &mhba->waiting_req_list);
1905 count = mhba->instancet->check_ib_list(mhba);
1906 if (list_empty(&mhba->waiting_req_list) || !count)
1907 return;
1908
1909 do {
1910 cmd = list_first_entry(&mhba->waiting_req_list,
1911 struct mvumi_cmd, queue_pointer);
1912 list_del_init(&cmd->queue_pointer);
1913 result = mvumi_send_command(mhba, cmd);
1914 switch (result) {
1915 case MV_QUEUE_COMMAND_RESULT_SENT:
1916 num_of_cl_sent++;
1917 break;
1918 case MV_QUEUE_COMMAND_RESULT_NO_RESOURCE:
1919 list_add(&cmd->queue_pointer, &mhba->waiting_req_list);
1920 if (num_of_cl_sent > 0)
1921 mvumi_send_ib_list_entry(mhba);
1922
1923 return;
1924 }
1925 } while (!list_empty(&mhba->waiting_req_list) && count--);
1926
1927 if (num_of_cl_sent > 0)
1928 mvumi_send_ib_list_entry(mhba);
1929 }
1930
1931 /**
1932 * mvumi_enable_intr - Enables interrupts
1933 * @mhba: Adapter soft state
1934 */
1935 static void mvumi_enable_intr(struct mvumi_hba *mhba)
1936 {
1937 unsigned int mask;
1938 struct mvumi_hw_regs *regs = mhba->regs;
1939
1940 iowrite32(regs->int_drbl_int_mask, regs->arm_to_pciea_mask_reg);
1941 mask = ioread32(regs->enpointa_mask_reg);
1942 mask |= regs->int_dl_cpu2pciea | regs->int_comaout | regs->int_comaerr;
1943 iowrite32(mask, regs->enpointa_mask_reg);
1944 }
1945
1946 /**
1947 * mvumi_disable_intr -Disables interrupt
1948 * @mhba: Adapter soft state
1949 */
1950 static void mvumi_disable_intr(struct mvumi_hba *mhba)
1951 {
1952 unsigned int mask;
1953 struct mvumi_hw_regs *regs = mhba->regs;
1954
1955 iowrite32(0, regs->arm_to_pciea_mask_reg);
1956 mask = ioread32(regs->enpointa_mask_reg);
1957 mask &= ~(regs->int_dl_cpu2pciea | regs->int_comaout |
1958 regs->int_comaerr);
1959 iowrite32(mask, regs->enpointa_mask_reg);
1960 }
1961
1962 static int mvumi_clear_intr(void *extend)
1963 {
1964 struct mvumi_hba *mhba = (struct mvumi_hba *) extend;
1965 unsigned int status, isr_status = 0, tmp = 0;
1966 struct mvumi_hw_regs *regs = mhba->regs;
1967
1968 status = ioread32(regs->main_int_cause_reg);
1969 if (!(status & regs->int_mu) || status == 0xFFFFFFFF)
1970 return 1;
1971 if (unlikely(status & regs->int_comaerr)) {
1972 tmp = ioread32(regs->outb_isr_cause);
1973 if (mhba->pdev->device == PCI_DEVICE_ID_MARVELL_MV9580) {
1974 if (tmp & regs->clic_out_err) {
1975 iowrite32(tmp & regs->clic_out_err,
1976 regs->outb_isr_cause);
1977 }
1978 } else {
1979 if (tmp & (regs->clic_in_err | regs->clic_out_err))
1980 iowrite32(tmp & (regs->clic_in_err |
1981 regs->clic_out_err),
1982 regs->outb_isr_cause);
1983 }
1984 status ^= mhba->regs->int_comaerr;
1985 /* inbound or outbound parity error, command will timeout */
1986 }
1987 if (status & regs->int_comaout) {
1988 tmp = ioread32(regs->outb_isr_cause);
1989 if (tmp & regs->clic_irq)
1990 iowrite32(tmp & regs->clic_irq, regs->outb_isr_cause);
1991 }
1992 if (status & regs->int_dl_cpu2pciea) {
1993 isr_status = ioread32(regs->arm_to_pciea_drbl_reg);
1994 if (isr_status)
1995 iowrite32(isr_status, regs->arm_to_pciea_drbl_reg);
1996 }
1997
1998 mhba->global_isr = status;
1999 mhba->isr_status = isr_status;
2000
2001 return 0;
2002 }
2003
2004 /**
2005 * mvumi_read_fw_status_reg - returns the current FW status value
2006 * @mhba: Adapter soft state
2007 */
2008 static unsigned int mvumi_read_fw_status_reg(struct mvumi_hba *mhba)
2009 {
2010 unsigned int status;
2011
2012 status = ioread32(mhba->regs->arm_to_pciea_drbl_reg);
2013 if (status)
2014 iowrite32(status, mhba->regs->arm_to_pciea_drbl_reg);
2015 return status;
2016 }
2017
2018 static struct mvumi_instance_template mvumi_instance_9143 = {
2019 .fire_cmd = mvumi_fire_cmd,
2020 .enable_intr = mvumi_enable_intr,
2021 .disable_intr = mvumi_disable_intr,
2022 .clear_intr = mvumi_clear_intr,
2023 .read_fw_status_reg = mvumi_read_fw_status_reg,
2024 .check_ib_list = mvumi_check_ib_list_9143,
2025 .check_ob_list = mvumi_check_ob_list_9143,
2026 .reset_host = mvumi_reset_host_9143,
2027 };
2028
2029 static struct mvumi_instance_template mvumi_instance_9580 = {
2030 .fire_cmd = mvumi_fire_cmd,
2031 .enable_intr = mvumi_enable_intr,
2032 .disable_intr = mvumi_disable_intr,
2033 .clear_intr = mvumi_clear_intr,
2034 .read_fw_status_reg = mvumi_read_fw_status_reg,
2035 .check_ib_list = mvumi_check_ib_list_9580,
2036 .check_ob_list = mvumi_check_ob_list_9580,
2037 .reset_host = mvumi_reset_host_9580,
2038 };
2039
2040 static int mvumi_slave_configure(struct scsi_device *sdev)
2041 {
2042 struct mvumi_hba *mhba;
2043 unsigned char bitcount = sizeof(unsigned char) * 8;
2044
2045 mhba = (struct mvumi_hba *) sdev->host->hostdata;
2046 if (sdev->id >= mhba->max_target_id)
2047 return -EINVAL;
2048
2049 mhba->target_map[sdev->id / bitcount] |= (1 << (sdev->id % bitcount));
2050 return 0;
2051 }
2052
2053 /**
2054 * mvumi_build_frame - Prepares a direct cdb (DCDB) command
2055 * @mhba: Adapter soft state
2056 * @scmd: SCSI command
2057 * @cmd: Command to be prepared in
2058 *
2059 * This function prepares CDB commands. These are typcially pass-through
2060 * commands to the devices.
2061 */
2062 static unsigned char mvumi_build_frame(struct mvumi_hba *mhba,
2063 struct scsi_cmnd *scmd, struct mvumi_cmd *cmd)
2064 {
2065 struct mvumi_msg_frame *pframe;
2066
2067 cmd->scmd = scmd;
2068 cmd->cmd_status = REQ_STATUS_PENDING;
2069 pframe = cmd->frame;
2070 pframe->device_id = ((unsigned short) scmd->device->id) |
2071 (((unsigned short) scmd->device->lun) << 8);
2072 pframe->cmd_flag = 0;
2073
2074 switch (scmd->sc_data_direction) {
2075 case DMA_NONE:
2076 pframe->cmd_flag |= CMD_FLAG_NON_DATA;
2077 break;
2078 case DMA_FROM_DEVICE:
2079 pframe->cmd_flag |= CMD_FLAG_DATA_IN;
2080 break;
2081 case DMA_TO_DEVICE:
2082 pframe->cmd_flag |= CMD_FLAG_DATA_OUT;
2083 break;
2084 case DMA_BIDIRECTIONAL:
2085 default:
2086 dev_warn(&mhba->pdev->dev, "unexpected data direction[%d] "
2087 "cmd[0x%x]\n", scmd->sc_data_direction, scmd->cmnd[0]);
2088 goto error;
2089 }
2090
2091 pframe->cdb_length = scmd->cmd_len;
2092 memcpy(pframe->cdb, scmd->cmnd, pframe->cdb_length);
2093 pframe->req_function = CL_FUN_SCSI_CMD;
2094 if (scsi_bufflen(scmd)) {
2095 if (mvumi_make_sgl(mhba, scmd, &pframe->payload[0],
2096 &pframe->sg_counts))
2097 goto error;
2098
2099 pframe->data_transfer_length = scsi_bufflen(scmd);
2100 } else {
2101 pframe->sg_counts = 0;
2102 pframe->data_transfer_length = 0;
2103 }
2104 return 0;
2105
2106 error:
2107 scmd->result = (DID_OK << 16) | (DRIVER_SENSE << 24) |
2108 SAM_STAT_CHECK_CONDITION;
2109 scsi_build_sense_buffer(0, scmd->sense_buffer, ILLEGAL_REQUEST, 0x24,
2110 0);
2111 return -1;
2112 }
2113
2114 /**
2115 * mvumi_queue_command - Queue entry point
2116 * @scmd: SCSI command to be queued
2117 * @done: Callback entry point
2118 */
2119 static int mvumi_queue_command(struct Scsi_Host *shost,
2120 struct scsi_cmnd *scmd)
2121 {
2122 struct mvumi_cmd *cmd;
2123 struct mvumi_hba *mhba;
2124 unsigned long irq_flags;
2125
2126 spin_lock_irqsave(shost->host_lock, irq_flags);
2127 scsi_cmd_get_serial(shost, scmd);
2128
2129 mhba = (struct mvumi_hba *) shost->hostdata;
2130 scmd->result = 0;
2131 cmd = mvumi_get_cmd(mhba);
2132 if (unlikely(!cmd)) {
2133 spin_unlock_irqrestore(shost->host_lock, irq_flags);
2134 return SCSI_MLQUEUE_HOST_BUSY;
2135 }
2136
2137 if (unlikely(mvumi_build_frame(mhba, scmd, cmd)))
2138 goto out_return_cmd;
2139
2140 cmd->scmd = scmd;
2141 scmd->SCp.ptr = (char *) cmd;
2142 mhba->instancet->fire_cmd(mhba, cmd);
2143 spin_unlock_irqrestore(shost->host_lock, irq_flags);
2144 return 0;
2145
2146 out_return_cmd:
2147 mvumi_return_cmd(mhba, cmd);
2148 scmd->scsi_done(scmd);
2149 spin_unlock_irqrestore(shost->host_lock, irq_flags);
2150 return 0;
2151 }
2152
2153 static enum blk_eh_timer_return mvumi_timed_out(struct scsi_cmnd *scmd)
2154 {
2155 struct mvumi_cmd *cmd = (struct mvumi_cmd *) scmd->SCp.ptr;
2156 struct Scsi_Host *host = scmd->device->host;
2157 struct mvumi_hba *mhba = shost_priv(host);
2158 unsigned long flags;
2159
2160 spin_lock_irqsave(mhba->shost->host_lock, flags);
2161
2162 if (mhba->tag_cmd[cmd->frame->tag]) {
2163 mhba->tag_cmd[cmd->frame->tag] = 0;
2164 tag_release_one(mhba, &mhba->tag_pool, cmd->frame->tag);
2165 }
2166 if (!list_empty(&cmd->queue_pointer))
2167 list_del_init(&cmd->queue_pointer);
2168 else
2169 atomic_dec(&mhba->fw_outstanding);
2170
2171 scmd->result = (DRIVER_INVALID << 24) | (DID_ABORT << 16);
2172 scmd->SCp.ptr = NULL;
2173 if (scsi_bufflen(scmd)) {
2174 if (scsi_sg_count(scmd)) {
2175 pci_unmap_sg(mhba->pdev,
2176 scsi_sglist(scmd),
2177 scsi_sg_count(scmd),
2178 (int)scmd->sc_data_direction);
2179 } else {
2180 pci_unmap_single(mhba->pdev,
2181 scmd->SCp.dma_handle,
2182 scsi_bufflen(scmd),
2183 (int)scmd->sc_data_direction);
2184
2185 scmd->SCp.dma_handle = 0;
2186 }
2187 }
2188 mvumi_return_cmd(mhba, cmd);
2189 spin_unlock_irqrestore(mhba->shost->host_lock, flags);
2190
2191 return BLK_EH_NOT_HANDLED;
2192 }
2193
2194 static int
2195 mvumi_bios_param(struct scsi_device *sdev, struct block_device *bdev,
2196 sector_t capacity, int geom[])
2197 {
2198 int heads, sectors;
2199 sector_t cylinders;
2200 unsigned long tmp;
2201
2202 heads = 64;
2203 sectors = 32;
2204 tmp = heads * sectors;
2205 cylinders = capacity;
2206 sector_div(cylinders, tmp);
2207
2208 if (capacity >= 0x200000) {
2209 heads = 255;
2210 sectors = 63;
2211 tmp = heads * sectors;
2212 cylinders = capacity;
2213 sector_div(cylinders, tmp);
2214 }
2215 geom[0] = heads;
2216 geom[1] = sectors;
2217 geom[2] = cylinders;
2218
2219 return 0;
2220 }
2221
2222 static struct scsi_host_template mvumi_template = {
2223
2224 .module = THIS_MODULE,
2225 .name = "Marvell Storage Controller",
2226 .slave_configure = mvumi_slave_configure,
2227 .queuecommand = mvumi_queue_command,
2228 .eh_timed_out = mvumi_timed_out,
2229 .eh_host_reset_handler = mvumi_host_reset,
2230 .bios_param = mvumi_bios_param,
2231 .this_id = -1,
2232 };
2233
2234 static int mvumi_cfg_hw_reg(struct mvumi_hba *mhba)
2235 {
2236 void *base = NULL;
2237 struct mvumi_hw_regs *regs;
2238
2239 switch (mhba->pdev->device) {
2240 case PCI_DEVICE_ID_MARVELL_MV9143:
2241 mhba->mmio = mhba->base_addr[0];
2242 base = mhba->mmio;
2243 if (!mhba->regs) {
2244 mhba->regs = kzalloc(sizeof(*regs), GFP_KERNEL);
2245 if (mhba->regs == NULL)
2246 return -ENOMEM;
2247 }
2248 regs = mhba->regs;
2249
2250 /* For Arm */
2251 regs->ctrl_sts_reg = base + 0x20104;
2252 regs->rstoutn_mask_reg = base + 0x20108;
2253 regs->sys_soft_rst_reg = base + 0x2010C;
2254 regs->main_int_cause_reg = base + 0x20200;
2255 regs->enpointa_mask_reg = base + 0x2020C;
2256 regs->rstoutn_en_reg = base + 0xF1400;
2257 /* For Doorbell */
2258 regs->pciea_to_arm_drbl_reg = base + 0x20400;
2259 regs->arm_to_pciea_drbl_reg = base + 0x20408;
2260 regs->arm_to_pciea_mask_reg = base + 0x2040C;
2261 regs->pciea_to_arm_msg0 = base + 0x20430;
2262 regs->pciea_to_arm_msg1 = base + 0x20434;
2263 regs->arm_to_pciea_msg0 = base + 0x20438;
2264 regs->arm_to_pciea_msg1 = base + 0x2043C;
2265
2266 /* For Message Unit */
2267
2268 regs->inb_aval_count_basel = base + 0x508;
2269 regs->inb_aval_count_baseh = base + 0x50C;
2270 regs->inb_write_pointer = base + 0x518;
2271 regs->inb_read_pointer = base + 0x51C;
2272 regs->outb_coal_cfg = base + 0x568;
2273 regs->outb_copy_basel = base + 0x5B0;
2274 regs->outb_copy_baseh = base + 0x5B4;
2275 regs->outb_copy_pointer = base + 0x544;
2276 regs->outb_read_pointer = base + 0x548;
2277 regs->outb_isr_cause = base + 0x560;
2278 regs->outb_coal_cfg = base + 0x568;
2279 /* Bit setting for HW */
2280 regs->int_comaout = 1 << 8;
2281 regs->int_comaerr = 1 << 6;
2282 regs->int_dl_cpu2pciea = 1 << 1;
2283 regs->cl_pointer_toggle = 1 << 12;
2284 regs->clic_irq = 1 << 1;
2285 regs->clic_in_err = 1 << 8;
2286 regs->clic_out_err = 1 << 12;
2287 regs->cl_slot_num_mask = 0xFFF;
2288 regs->int_drbl_int_mask = 0x3FFFFFFF;
2289 regs->int_mu = regs->int_dl_cpu2pciea | regs->int_comaout |
2290 regs->int_comaerr;
2291 break;
2292 case PCI_DEVICE_ID_MARVELL_MV9580:
2293 mhba->mmio = mhba->base_addr[2];
2294 base = mhba->mmio;
2295 if (!mhba->regs) {
2296 mhba->regs = kzalloc(sizeof(*regs), GFP_KERNEL);
2297 if (mhba->regs == NULL)
2298 return -ENOMEM;
2299 }
2300 regs = mhba->regs;
2301 /* For Arm */
2302 regs->ctrl_sts_reg = base + 0x20104;
2303 regs->rstoutn_mask_reg = base + 0x1010C;
2304 regs->sys_soft_rst_reg = base + 0x10108;
2305 regs->main_int_cause_reg = base + 0x10200;
2306 regs->enpointa_mask_reg = base + 0x1020C;
2307 regs->rstoutn_en_reg = base + 0xF1400;
2308
2309 /* For Doorbell */
2310 regs->pciea_to_arm_drbl_reg = base + 0x10460;
2311 regs->arm_to_pciea_drbl_reg = base + 0x10480;
2312 regs->arm_to_pciea_mask_reg = base + 0x10484;
2313 regs->pciea_to_arm_msg0 = base + 0x10400;
2314 regs->pciea_to_arm_msg1 = base + 0x10404;
2315 regs->arm_to_pciea_msg0 = base + 0x10420;
2316 regs->arm_to_pciea_msg1 = base + 0x10424;
2317
2318 /* For reset*/
2319 regs->reset_request = base + 0x10108;
2320 regs->reset_enable = base + 0x1010c;
2321
2322 /* For Message Unit */
2323 regs->inb_aval_count_basel = base + 0x4008;
2324 regs->inb_aval_count_baseh = base + 0x400C;
2325 regs->inb_write_pointer = base + 0x4018;
2326 regs->inb_read_pointer = base + 0x401C;
2327 regs->outb_copy_basel = base + 0x4058;
2328 regs->outb_copy_baseh = base + 0x405C;
2329 regs->outb_copy_pointer = base + 0x406C;
2330 regs->outb_read_pointer = base + 0x4070;
2331 regs->outb_coal_cfg = base + 0x4080;
2332 regs->outb_isr_cause = base + 0x4088;
2333 /* Bit setting for HW */
2334 regs->int_comaout = 1 << 4;
2335 regs->int_dl_cpu2pciea = 1 << 12;
2336 regs->int_comaerr = 1 << 29;
2337 regs->cl_pointer_toggle = 1 << 14;
2338 regs->cl_slot_num_mask = 0x3FFF;
2339 regs->clic_irq = 1 << 0;
2340 regs->clic_out_err = 1 << 1;
2341 regs->int_drbl_int_mask = 0x3FFFFFFF;
2342 regs->int_mu = regs->int_dl_cpu2pciea | regs->int_comaout;
2343 break;
2344 default:
2345 return -1;
2346 break;
2347 }
2348
2349 return 0;
2350 }
2351
2352 /**
2353 * mvumi_init_fw - Initializes the FW
2354 * @mhba: Adapter soft state
2355 *
2356 * This is the main function for initializing firmware.
2357 */
2358 static int mvumi_init_fw(struct mvumi_hba *mhba)
2359 {
2360 int ret = 0;
2361
2362 if (pci_request_regions(mhba->pdev, MV_DRIVER_NAME)) {
2363 dev_err(&mhba->pdev->dev, "IO memory region busy!\n");
2364 return -EBUSY;
2365 }
2366 ret = mvumi_map_pci_addr(mhba->pdev, mhba->base_addr);
2367 if (ret)
2368 goto fail_ioremap;
2369
2370 switch (mhba->pdev->device) {
2371 case PCI_DEVICE_ID_MARVELL_MV9143:
2372 mhba->instancet = &mvumi_instance_9143;
2373 mhba->io_seq = 0;
2374 mhba->max_sge = MVUMI_MAX_SG_ENTRY;
2375 mhba->request_id_enabled = 1;
2376 break;
2377 case PCI_DEVICE_ID_MARVELL_MV9580:
2378 mhba->instancet = &mvumi_instance_9580;
2379 mhba->io_seq = 0;
2380 mhba->max_sge = MVUMI_MAX_SG_ENTRY;
2381 break;
2382 default:
2383 dev_err(&mhba->pdev->dev, "device 0x%x not supported!\n",
2384 mhba->pdev->device);
2385 mhba->instancet = NULL;
2386 ret = -EINVAL;
2387 goto fail_alloc_mem;
2388 }
2389 dev_dbg(&mhba->pdev->dev, "device id : %04X is found.\n",
2390 mhba->pdev->device);
2391 ret = mvumi_cfg_hw_reg(mhba);
2392 if (ret) {
2393 dev_err(&mhba->pdev->dev,
2394 "failed to allocate memory for reg\n");
2395 ret = -ENOMEM;
2396 goto fail_alloc_mem;
2397 }
2398 mhba->handshake_page = pci_alloc_consistent(mhba->pdev, HSP_MAX_SIZE,
2399 &mhba->handshake_page_phys);
2400 if (!mhba->handshake_page) {
2401 dev_err(&mhba->pdev->dev,
2402 "failed to allocate memory for handshake\n");
2403 ret = -ENOMEM;
2404 goto fail_alloc_page;
2405 }
2406
2407 if (mvumi_start(mhba)) {
2408 ret = -EINVAL;
2409 goto fail_ready_state;
2410 }
2411 ret = mvumi_alloc_cmds(mhba);
2412 if (ret)
2413 goto fail_ready_state;
2414
2415 return 0;
2416
2417 fail_ready_state:
2418 mvumi_release_mem_resource(mhba);
2419 pci_free_consistent(mhba->pdev, HSP_MAX_SIZE,
2420 mhba->handshake_page, mhba->handshake_page_phys);
2421 fail_alloc_page:
2422 kfree(mhba->regs);
2423 fail_alloc_mem:
2424 mvumi_unmap_pci_addr(mhba->pdev, mhba->base_addr);
2425 fail_ioremap:
2426 pci_release_regions(mhba->pdev);
2427
2428 return ret;
2429 }
2430
2431 /**
2432 * mvumi_io_attach - Attaches this driver to SCSI mid-layer
2433 * @mhba: Adapter soft state
2434 */
2435 static int mvumi_io_attach(struct mvumi_hba *mhba)
2436 {
2437 struct Scsi_Host *host = mhba->shost;
2438 struct scsi_device *sdev = NULL;
2439 int ret;
2440 unsigned int max_sg = (mhba->ib_max_size + 4 -
2441 sizeof(struct mvumi_msg_frame)) / sizeof(struct mvumi_sgl);
2442
2443 host->irq = mhba->pdev->irq;
2444 host->unique_id = mhba->unique_id;
2445 host->can_queue = (mhba->max_io - 1) ? (mhba->max_io - 1) : 1;
2446 host->sg_tablesize = mhba->max_sge > max_sg ? max_sg : mhba->max_sge;
2447 host->max_sectors = mhba->max_transfer_size / 512;
2448 host->cmd_per_lun = (mhba->max_io - 1) ? (mhba->max_io - 1) : 1;
2449 host->max_id = mhba->max_target_id;
2450 host->max_cmd_len = MAX_COMMAND_SIZE;
2451
2452 ret = scsi_add_host(host, &mhba->pdev->dev);
2453 if (ret) {
2454 dev_err(&mhba->pdev->dev, "scsi_add_host failed\n");
2455 return ret;
2456 }
2457 mhba->fw_flag |= MVUMI_FW_ATTACH;
2458
2459 mutex_lock(&mhba->sas_discovery_mutex);
2460 if (mhba->pdev->device == PCI_DEVICE_ID_MARVELL_MV9580)
2461 ret = scsi_add_device(host, 0, mhba->max_target_id - 1, 0);
2462 else
2463 ret = 0;
2464 if (ret) {
2465 dev_err(&mhba->pdev->dev, "add virtual device failed\n");
2466 mutex_unlock(&mhba->sas_discovery_mutex);
2467 goto fail_add_device;
2468 }
2469
2470 mhba->dm_thread = kthread_create(mvumi_rescan_bus,
2471 mhba, "mvumi_scanthread");
2472 if (IS_ERR(mhba->dm_thread)) {
2473 dev_err(&mhba->pdev->dev,
2474 "failed to create device scan thread\n");
2475 mutex_unlock(&mhba->sas_discovery_mutex);
2476 goto fail_create_thread;
2477 }
2478 atomic_set(&mhba->pnp_count, 1);
2479 wake_up_process(mhba->dm_thread);
2480
2481 mutex_unlock(&mhba->sas_discovery_mutex);
2482 return 0;
2483
2484 fail_create_thread:
2485 if (mhba->pdev->device == PCI_DEVICE_ID_MARVELL_MV9580)
2486 sdev = scsi_device_lookup(mhba->shost, 0,
2487 mhba->max_target_id - 1, 0);
2488 if (sdev) {
2489 scsi_remove_device(sdev);
2490 scsi_device_put(sdev);
2491 }
2492 fail_add_device:
2493 scsi_remove_host(mhba->shost);
2494 return ret;
2495 }
2496
2497 /**
2498 * mvumi_probe_one - PCI hotplug entry point
2499 * @pdev: PCI device structure
2500 * @id: PCI ids of supported hotplugged adapter
2501 */
2502 static int mvumi_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
2503 {
2504 struct Scsi_Host *host;
2505 struct mvumi_hba *mhba;
2506 int ret;
2507
2508 dev_dbg(&pdev->dev, " %#4.04x:%#4.04x:%#4.04x:%#4.04x: ",
2509 pdev->vendor, pdev->device, pdev->subsystem_vendor,
2510 pdev->subsystem_device);
2511
2512 ret = pci_enable_device(pdev);
2513 if (ret)
2514 return ret;
2515
2516 pci_set_master(pdev);
2517
2518 if (IS_DMA64) {
2519 ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
2520 if (ret) {
2521 ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
2522 if (ret)
2523 goto fail_set_dma_mask;
2524 }
2525 } else {
2526 ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
2527 if (ret)
2528 goto fail_set_dma_mask;
2529 }
2530
2531 host = scsi_host_alloc(&mvumi_template, sizeof(*mhba));
2532 if (!host) {
2533 dev_err(&pdev->dev, "scsi_host_alloc failed\n");
2534 ret = -ENOMEM;
2535 goto fail_alloc_instance;
2536 }
2537 mhba = shost_priv(host);
2538
2539 INIT_LIST_HEAD(&mhba->cmd_pool);
2540 INIT_LIST_HEAD(&mhba->ob_data_list);
2541 INIT_LIST_HEAD(&mhba->free_ob_list);
2542 INIT_LIST_HEAD(&mhba->res_list);
2543 INIT_LIST_HEAD(&mhba->waiting_req_list);
2544 mutex_init(&mhba->device_lock);
2545 INIT_LIST_HEAD(&mhba->mhba_dev_list);
2546 INIT_LIST_HEAD(&mhba->shost_dev_list);
2547 atomic_set(&mhba->fw_outstanding, 0);
2548 init_waitqueue_head(&mhba->int_cmd_wait_q);
2549 mutex_init(&mhba->sas_discovery_mutex);
2550
2551 mhba->pdev = pdev;
2552 mhba->shost = host;
2553 mhba->unique_id = pdev->bus->number << 8 | pdev->devfn;
2554
2555 ret = mvumi_init_fw(mhba);
2556 if (ret)
2557 goto fail_init_fw;
2558
2559 ret = request_irq(mhba->pdev->irq, mvumi_isr_handler, IRQF_SHARED,
2560 "mvumi", mhba);
2561 if (ret) {
2562 dev_err(&pdev->dev, "failed to register IRQ\n");
2563 goto fail_init_irq;
2564 }
2565
2566 mhba->instancet->enable_intr(mhba);
2567 pci_set_drvdata(pdev, mhba);
2568
2569 ret = mvumi_io_attach(mhba);
2570 if (ret)
2571 goto fail_io_attach;
2572
2573 mvumi_backup_bar_addr(mhba);
2574 dev_dbg(&pdev->dev, "probe mvumi driver successfully.\n");
2575
2576 return 0;
2577
2578 fail_io_attach:
2579 mhba->instancet->disable_intr(mhba);
2580 free_irq(mhba->pdev->irq, mhba);
2581 fail_init_irq:
2582 mvumi_release_fw(mhba);
2583 fail_init_fw:
2584 scsi_host_put(host);
2585
2586 fail_alloc_instance:
2587 fail_set_dma_mask:
2588 pci_disable_device(pdev);
2589
2590 return ret;
2591 }
2592
2593 static void mvumi_detach_one(struct pci_dev *pdev)
2594 {
2595 struct Scsi_Host *host;
2596 struct mvumi_hba *mhba;
2597
2598 mhba = pci_get_drvdata(pdev);
2599 if (mhba->dm_thread) {
2600 kthread_stop(mhba->dm_thread);
2601 mhba->dm_thread = NULL;
2602 }
2603
2604 mvumi_detach_devices(mhba);
2605 host = mhba->shost;
2606 scsi_remove_host(mhba->shost);
2607 mvumi_flush_cache(mhba);
2608
2609 mhba->instancet->disable_intr(mhba);
2610 free_irq(mhba->pdev->irq, mhba);
2611 mvumi_release_fw(mhba);
2612 scsi_host_put(host);
2613 pci_disable_device(pdev);
2614 dev_dbg(&pdev->dev, "driver is removed!\n");
2615 }
2616
2617 /**
2618 * mvumi_shutdown - Shutdown entry point
2619 * @device: Generic device structure
2620 */
2621 static void mvumi_shutdown(struct pci_dev *pdev)
2622 {
2623 struct mvumi_hba *mhba = pci_get_drvdata(pdev);
2624
2625 mvumi_flush_cache(mhba);
2626 }
2627
2628 static int __maybe_unused mvumi_suspend(struct pci_dev *pdev, pm_message_t state)
2629 {
2630 struct mvumi_hba *mhba = NULL;
2631
2632 mhba = pci_get_drvdata(pdev);
2633 mvumi_flush_cache(mhba);
2634
2635 pci_set_drvdata(pdev, mhba);
2636 mhba->instancet->disable_intr(mhba);
2637 free_irq(mhba->pdev->irq, mhba);
2638 mvumi_unmap_pci_addr(pdev, mhba->base_addr);
2639 pci_release_regions(pdev);
2640 pci_save_state(pdev);
2641 pci_disable_device(pdev);
2642 pci_set_power_state(pdev, pci_choose_state(pdev, state));
2643
2644 return 0;
2645 }
2646
2647 static int __maybe_unused mvumi_resume(struct pci_dev *pdev)
2648 {
2649 int ret;
2650 struct mvumi_hba *mhba = NULL;
2651
2652 mhba = pci_get_drvdata(pdev);
2653
2654 pci_set_power_state(pdev, PCI_D0);
2655 pci_enable_wake(pdev, PCI_D0, 0);
2656 pci_restore_state(pdev);
2657
2658 ret = pci_enable_device(pdev);
2659 if (ret) {
2660 dev_err(&pdev->dev, "enable device failed\n");
2661 return ret;
2662 }
2663 pci_set_master(pdev);
2664 if (IS_DMA64) {
2665 ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
2666 if (ret) {
2667 ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
2668 if (ret)
2669 goto fail;
2670 }
2671 } else {
2672 ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
2673 if (ret)
2674 goto fail;
2675 }
2676 ret = pci_request_regions(mhba->pdev, MV_DRIVER_NAME);
2677 if (ret)
2678 goto fail;
2679 ret = mvumi_map_pci_addr(mhba->pdev, mhba->base_addr);
2680 if (ret)
2681 goto release_regions;
2682
2683 if (mvumi_cfg_hw_reg(mhba)) {
2684 ret = -EINVAL;
2685 goto unmap_pci_addr;
2686 }
2687
2688 mhba->mmio = mhba->base_addr[0];
2689 mvumi_reset(mhba);
2690
2691 if (mvumi_start(mhba)) {
2692 ret = -EINVAL;
2693 goto unmap_pci_addr;
2694 }
2695
2696 ret = request_irq(mhba->pdev->irq, mvumi_isr_handler, IRQF_SHARED,
2697 "mvumi", mhba);
2698 if (ret) {
2699 dev_err(&pdev->dev, "failed to register IRQ\n");
2700 goto unmap_pci_addr;
2701 }
2702 mhba->instancet->enable_intr(mhba);
2703
2704 return 0;
2705
2706 unmap_pci_addr:
2707 mvumi_unmap_pci_addr(pdev, mhba->base_addr);
2708 release_regions:
2709 pci_release_regions(pdev);
2710 fail:
2711 pci_disable_device(pdev);
2712
2713 return ret;
2714 }
2715
2716 static struct pci_driver mvumi_pci_driver = {
2717
2718 .name = MV_DRIVER_NAME,
2719 .id_table = mvumi_pci_table,
2720 .probe = mvumi_probe_one,
2721 .remove = mvumi_detach_one,
2722 .shutdown = mvumi_shutdown,
2723 #ifdef CONFIG_PM
2724 .suspend = mvumi_suspend,
2725 .resume = mvumi_resume,
2726 #endif
2727 };
2728
2729 /**
2730 * mvumi_init - Driver load entry point
2731 */
2732 static int __init mvumi_init(void)
2733 {
2734 return pci_register_driver(&mvumi_pci_driver);
2735 }
2736
2737 /**
2738 * mvumi_exit - Driver unload entry point
2739 */
2740 static void __exit mvumi_exit(void)
2741 {
2742
2743 pci_unregister_driver(&mvumi_pci_driver);
2744 }
2745
2746 module_init(mvumi_init);
2747 module_exit(mvumi_exit);
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