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