USB: usb-storage: unusual_devs update for Super TOP SATA bridge
[linux/fpc-iii.git] / drivers / scsi / aacraid / rx.c
blobb029c7cc785b2262d8d17f771568253c4373dc78
1 /*
2 * Adaptec AAC series RAID controller driver
3 * (c) Copyright 2001 Red Hat Inc.
5 * based on the old aacraid driver that is..
6 * Adaptec aacraid device driver for Linux.
8 * Copyright (c) 2000-2010 Adaptec, Inc.
9 * 2010 PMC-Sierra, Inc. (aacraid@pmc-sierra.com)
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2, or (at your option)
14 * any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; see the file COPYING. If not, write to
23 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
25 * Module Name:
26 * rx.c
28 * Abstract: Hardware miniport for Drawbridge specific hardware functions.
32 #include <linux/kernel.h>
33 #include <linux/init.h>
34 #include <linux/types.h>
35 #include <linux/pci.h>
36 #include <linux/spinlock.h>
37 #include <linux/blkdev.h>
38 #include <linux/delay.h>
39 #include <linux/completion.h>
40 #include <linux/time.h>
41 #include <linux/interrupt.h>
43 #include <scsi/scsi_host.h>
45 #include "aacraid.h"
47 static irqreturn_t aac_rx_intr_producer(int irq, void *dev_id)
49 struct aac_dev *dev = dev_id;
50 unsigned long bellbits;
51 u8 intstat = rx_readb(dev, MUnit.OISR);
54 * Read mask and invert because drawbridge is reversed.
55 * This allows us to only service interrupts that have
56 * been enabled.
57 * Check to see if this is our interrupt. If it isn't just return
59 if (likely(intstat & ~(dev->OIMR))) {
60 bellbits = rx_readl(dev, OutboundDoorbellReg);
61 if (unlikely(bellbits & DoorBellPrintfReady)) {
62 aac_printf(dev, readl (&dev->IndexRegs->Mailbox[5]));
63 rx_writel(dev, MUnit.ODR,DoorBellPrintfReady);
64 rx_writel(dev, InboundDoorbellReg,DoorBellPrintfDone);
66 else if (unlikely(bellbits & DoorBellAdapterNormCmdReady)) {
67 rx_writel(dev, MUnit.ODR, DoorBellAdapterNormCmdReady);
68 aac_command_normal(&dev->queues->queue[HostNormCmdQueue]);
70 else if (likely(bellbits & DoorBellAdapterNormRespReady)) {
71 rx_writel(dev, MUnit.ODR,DoorBellAdapterNormRespReady);
72 aac_response_normal(&dev->queues->queue[HostNormRespQueue]);
74 else if (unlikely(bellbits & DoorBellAdapterNormCmdNotFull)) {
75 rx_writel(dev, MUnit.ODR, DoorBellAdapterNormCmdNotFull);
77 else if (unlikely(bellbits & DoorBellAdapterNormRespNotFull)) {
78 rx_writel(dev, MUnit.ODR, DoorBellAdapterNormCmdNotFull);
79 rx_writel(dev, MUnit.ODR, DoorBellAdapterNormRespNotFull);
81 return IRQ_HANDLED;
83 return IRQ_NONE;
86 static irqreturn_t aac_rx_intr_message(int irq, void *dev_id)
88 int isAif, isFastResponse, isSpecial;
89 struct aac_dev *dev = dev_id;
90 u32 Index = rx_readl(dev, MUnit.OutboundQueue);
91 if (unlikely(Index == 0xFFFFFFFFL))
92 Index = rx_readl(dev, MUnit.OutboundQueue);
93 if (likely(Index != 0xFFFFFFFFL)) {
94 do {
95 isAif = isFastResponse = isSpecial = 0;
96 if (Index & 0x00000002L) {
97 isAif = 1;
98 if (Index == 0xFFFFFFFEL)
99 isSpecial = 1;
100 Index &= ~0x00000002L;
101 } else {
102 if (Index & 0x00000001L)
103 isFastResponse = 1;
104 Index >>= 2;
106 if (!isSpecial) {
107 if (unlikely(aac_intr_normal(dev,
108 Index, isAif,
109 isFastResponse, NULL))) {
110 rx_writel(dev,
111 MUnit.OutboundQueue,
112 Index);
113 rx_writel(dev,
114 MUnit.ODR,
115 DoorBellAdapterNormRespReady);
118 Index = rx_readl(dev, MUnit.OutboundQueue);
119 } while (Index != 0xFFFFFFFFL);
120 return IRQ_HANDLED;
122 return IRQ_NONE;
126 * aac_rx_disable_interrupt - Disable interrupts
127 * @dev: Adapter
130 static void aac_rx_disable_interrupt(struct aac_dev *dev)
132 rx_writeb(dev, MUnit.OIMR, dev->OIMR = 0xff);
136 * aac_rx_enable_interrupt_producer - Enable interrupts
137 * @dev: Adapter
140 static void aac_rx_enable_interrupt_producer(struct aac_dev *dev)
142 rx_writeb(dev, MUnit.OIMR, dev->OIMR = 0xfb);
146 * aac_rx_enable_interrupt_message - Enable interrupts
147 * @dev: Adapter
150 static void aac_rx_enable_interrupt_message(struct aac_dev *dev)
152 rx_writeb(dev, MUnit.OIMR, dev->OIMR = 0xf7);
156 * rx_sync_cmd - send a command and wait
157 * @dev: Adapter
158 * @command: Command to execute
159 * @p1: first parameter
160 * @ret: adapter status
162 * This routine will send a synchronous command to the adapter and wait
163 * for its completion.
166 static int rx_sync_cmd(struct aac_dev *dev, u32 command,
167 u32 p1, u32 p2, u32 p3, u32 p4, u32 p5, u32 p6,
168 u32 *status, u32 * r1, u32 * r2, u32 * r3, u32 * r4)
170 unsigned long start;
171 int ok;
173 * Write the command into Mailbox 0
175 writel(command, &dev->IndexRegs->Mailbox[0]);
177 * Write the parameters into Mailboxes 1 - 6
179 writel(p1, &dev->IndexRegs->Mailbox[1]);
180 writel(p2, &dev->IndexRegs->Mailbox[2]);
181 writel(p3, &dev->IndexRegs->Mailbox[3]);
182 writel(p4, &dev->IndexRegs->Mailbox[4]);
184 * Clear the synch command doorbell to start on a clean slate.
186 rx_writel(dev, OutboundDoorbellReg, OUTBOUNDDOORBELL_0);
188 * Disable doorbell interrupts
190 rx_writeb(dev, MUnit.OIMR, dev->OIMR = 0xff);
192 * Force the completion of the mask register write before issuing
193 * the interrupt.
195 rx_readb (dev, MUnit.OIMR);
197 * Signal that there is a new synch command
199 rx_writel(dev, InboundDoorbellReg, INBOUNDDOORBELL_0);
201 ok = 0;
202 start = jiffies;
205 * Wait up to 30 seconds
207 while (time_before(jiffies, start+30*HZ))
209 udelay(5); /* Delay 5 microseconds to let Mon960 get info. */
211 * Mon960 will set doorbell0 bit when it has completed the command.
213 if (rx_readl(dev, OutboundDoorbellReg) & OUTBOUNDDOORBELL_0) {
215 * Clear the doorbell.
217 rx_writel(dev, OutboundDoorbellReg, OUTBOUNDDOORBELL_0);
218 ok = 1;
219 break;
222 * Yield the processor in case we are slow
224 msleep(1);
226 if (unlikely(ok != 1)) {
228 * Restore interrupt mask even though we timed out
230 aac_adapter_enable_int(dev);
231 return -ETIMEDOUT;
234 * Pull the synch status from Mailbox 0.
236 if (status)
237 *status = readl(&dev->IndexRegs->Mailbox[0]);
238 if (r1)
239 *r1 = readl(&dev->IndexRegs->Mailbox[1]);
240 if (r2)
241 *r2 = readl(&dev->IndexRegs->Mailbox[2]);
242 if (r3)
243 *r3 = readl(&dev->IndexRegs->Mailbox[3]);
244 if (r4)
245 *r4 = readl(&dev->IndexRegs->Mailbox[4]);
247 * Clear the synch command doorbell.
249 rx_writel(dev, OutboundDoorbellReg, OUTBOUNDDOORBELL_0);
251 * Restore interrupt mask
253 aac_adapter_enable_int(dev);
254 return 0;
259 * aac_rx_interrupt_adapter - interrupt adapter
260 * @dev: Adapter
262 * Send an interrupt to the i960 and breakpoint it.
265 static void aac_rx_interrupt_adapter(struct aac_dev *dev)
267 rx_sync_cmd(dev, BREAKPOINT_REQUEST, 0, 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL);
271 * aac_rx_notify_adapter - send an event to the adapter
272 * @dev: Adapter
273 * @event: Event to send
275 * Notify the i960 that something it probably cares about has
276 * happened.
279 static void aac_rx_notify_adapter(struct aac_dev *dev, u32 event)
281 switch (event) {
283 case AdapNormCmdQue:
284 rx_writel(dev, MUnit.IDR,INBOUNDDOORBELL_1);
285 break;
286 case HostNormRespNotFull:
287 rx_writel(dev, MUnit.IDR,INBOUNDDOORBELL_4);
288 break;
289 case AdapNormRespQue:
290 rx_writel(dev, MUnit.IDR,INBOUNDDOORBELL_2);
291 break;
292 case HostNormCmdNotFull:
293 rx_writel(dev, MUnit.IDR,INBOUNDDOORBELL_3);
294 break;
295 case HostShutdown:
296 break;
297 case FastIo:
298 rx_writel(dev, MUnit.IDR,INBOUNDDOORBELL_6);
299 break;
300 case AdapPrintfDone:
301 rx_writel(dev, MUnit.IDR,INBOUNDDOORBELL_5);
302 break;
303 default:
304 BUG();
305 break;
310 * aac_rx_start_adapter - activate adapter
311 * @dev: Adapter
313 * Start up processing on an i960 based AAC adapter
316 static void aac_rx_start_adapter(struct aac_dev *dev)
318 struct aac_init *init;
320 init = dev->init;
321 init->HostElapsedSeconds = cpu_to_le32(get_seconds());
322 // We can only use a 32 bit address here
323 rx_sync_cmd(dev, INIT_STRUCT_BASE_ADDRESS, (u32)(ulong)dev->init_pa,
324 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL);
328 * aac_rx_check_health
329 * @dev: device to check if healthy
331 * Will attempt to determine if the specified adapter is alive and
332 * capable of handling requests, returning 0 if alive.
334 static int aac_rx_check_health(struct aac_dev *dev)
336 u32 status = rx_readl(dev, MUnit.OMRx[0]);
339 * Check to see if the board failed any self tests.
341 if (unlikely(status & SELF_TEST_FAILED))
342 return -1;
344 * Check to see if the board panic'd.
346 if (unlikely(status & KERNEL_PANIC)) {
347 char * buffer;
348 struct POSTSTATUS {
349 __le32 Post_Command;
350 __le32 Post_Address;
351 } * post;
352 dma_addr_t paddr, baddr;
353 int ret;
355 if (likely((status & 0xFF000000L) == 0xBC000000L))
356 return (status >> 16) & 0xFF;
357 buffer = pci_alloc_consistent(dev->pdev, 512, &baddr);
358 ret = -2;
359 if (unlikely(buffer == NULL))
360 return ret;
361 post = pci_alloc_consistent(dev->pdev,
362 sizeof(struct POSTSTATUS), &paddr);
363 if (unlikely(post == NULL)) {
364 pci_free_consistent(dev->pdev, 512, buffer, baddr);
365 return ret;
367 memset(buffer, 0, 512);
368 post->Post_Command = cpu_to_le32(COMMAND_POST_RESULTS);
369 post->Post_Address = cpu_to_le32(baddr);
370 rx_writel(dev, MUnit.IMRx[0], paddr);
371 rx_sync_cmd(dev, COMMAND_POST_RESULTS, baddr, 0, 0, 0, 0, 0,
372 NULL, NULL, NULL, NULL, NULL);
373 pci_free_consistent(dev->pdev, sizeof(struct POSTSTATUS),
374 post, paddr);
375 if (likely((buffer[0] == '0') && ((buffer[1] == 'x') || (buffer[1] == 'X')))) {
376 ret = (hex_to_bin(buffer[2]) << 4) +
377 hex_to_bin(buffer[3]);
379 pci_free_consistent(dev->pdev, 512, buffer, baddr);
380 return ret;
383 * Wait for the adapter to be up and running.
385 if (unlikely(!(status & KERNEL_UP_AND_RUNNING)))
386 return -3;
388 * Everything is OK
390 return 0;
394 * aac_rx_deliver_producer
395 * @fib: fib to issue
397 * Will send a fib, returning 0 if successful.
399 int aac_rx_deliver_producer(struct fib * fib)
401 struct aac_dev *dev = fib->dev;
402 struct aac_queue *q = &dev->queues->queue[AdapNormCmdQueue];
403 unsigned long qflags;
404 u32 Index;
405 unsigned long nointr = 0;
407 spin_lock_irqsave(q->lock, qflags);
408 aac_queue_get( dev, &Index, AdapNormCmdQueue, fib->hw_fib_va, 1, fib, &nointr);
410 q->numpending++;
411 *(q->headers.producer) = cpu_to_le32(Index + 1);
412 spin_unlock_irqrestore(q->lock, qflags);
413 if (!(nointr & aac_config.irq_mod))
414 aac_adapter_notify(dev, AdapNormCmdQueue);
416 return 0;
420 * aac_rx_deliver_message
421 * @fib: fib to issue
423 * Will send a fib, returning 0 if successful.
425 static int aac_rx_deliver_message(struct fib * fib)
427 struct aac_dev *dev = fib->dev;
428 struct aac_queue *q = &dev->queues->queue[AdapNormCmdQueue];
429 unsigned long qflags;
430 u32 Index;
431 u64 addr;
432 volatile void __iomem *device;
434 unsigned long count = 10000000L; /* 50 seconds */
435 spin_lock_irqsave(q->lock, qflags);
436 q->numpending++;
437 spin_unlock_irqrestore(q->lock, qflags);
438 for(;;) {
439 Index = rx_readl(dev, MUnit.InboundQueue);
440 if (unlikely(Index == 0xFFFFFFFFL))
441 Index = rx_readl(dev, MUnit.InboundQueue);
442 if (likely(Index != 0xFFFFFFFFL))
443 break;
444 if (--count == 0) {
445 spin_lock_irqsave(q->lock, qflags);
446 q->numpending--;
447 spin_unlock_irqrestore(q->lock, qflags);
448 return -ETIMEDOUT;
450 udelay(5);
452 device = dev->base + Index;
453 addr = fib->hw_fib_pa;
454 writel((u32)(addr & 0xffffffff), device);
455 device += sizeof(u32);
456 writel((u32)(addr >> 32), device);
457 device += sizeof(u32);
458 writel(le16_to_cpu(fib->hw_fib_va->header.Size), device);
459 rx_writel(dev, MUnit.InboundQueue, Index);
460 return 0;
464 * aac_rx_ioremap
465 * @size: mapping resize request
468 static int aac_rx_ioremap(struct aac_dev * dev, u32 size)
470 if (!size) {
471 iounmap(dev->regs.rx);
472 return 0;
474 dev->base = dev->regs.rx = ioremap(dev->scsi_host_ptr->base, size);
475 if (dev->base == NULL)
476 return -1;
477 dev->IndexRegs = &dev->regs.rx->IndexRegs;
478 return 0;
481 static int aac_rx_restart_adapter(struct aac_dev *dev, int bled)
483 u32 var;
485 if (!(dev->supplement_adapter_info.SupportedOptions2 &
486 AAC_OPTION_MU_RESET) || (bled >= 0) || (bled == -2)) {
487 if (bled)
488 printk(KERN_ERR "%s%d: adapter kernel panic'd %x.\n",
489 dev->name, dev->id, bled);
490 else {
491 bled = aac_adapter_sync_cmd(dev, IOP_RESET_ALWAYS,
492 0, 0, 0, 0, 0, 0, &var, NULL, NULL, NULL, NULL);
493 if (!bled && (var != 0x00000001) && (var != 0x3803000F))
494 bled = -EINVAL;
496 if (bled && (bled != -ETIMEDOUT))
497 bled = aac_adapter_sync_cmd(dev, IOP_RESET,
498 0, 0, 0, 0, 0, 0, &var, NULL, NULL, NULL, NULL);
500 if (bled && (bled != -ETIMEDOUT))
501 return -EINVAL;
503 if (bled || (var == 0x3803000F)) { /* USE_OTHER_METHOD */
504 rx_writel(dev, MUnit.reserved2, 3);
505 msleep(5000); /* Delay 5 seconds */
506 var = 0x00000001;
508 if (var != 0x00000001)
509 return -EINVAL;
510 if (rx_readl(dev, MUnit.OMRx[0]) & KERNEL_PANIC)
511 return -ENODEV;
512 if (startup_timeout < 300)
513 startup_timeout = 300;
514 return 0;
518 * aac_rx_select_comm - Select communications method
519 * @dev: Adapter
520 * @comm: communications method
523 int aac_rx_select_comm(struct aac_dev *dev, int comm)
525 switch (comm) {
526 case AAC_COMM_PRODUCER:
527 dev->a_ops.adapter_enable_int = aac_rx_enable_interrupt_producer;
528 dev->a_ops.adapter_intr = aac_rx_intr_producer;
529 dev->a_ops.adapter_deliver = aac_rx_deliver_producer;
530 break;
531 case AAC_COMM_MESSAGE:
532 dev->a_ops.adapter_enable_int = aac_rx_enable_interrupt_message;
533 dev->a_ops.adapter_intr = aac_rx_intr_message;
534 dev->a_ops.adapter_deliver = aac_rx_deliver_message;
535 break;
536 default:
537 return 1;
539 return 0;
543 * aac_rx_init - initialize an i960 based AAC card
544 * @dev: device to configure
546 * Allocate and set up resources for the i960 based AAC variants. The
547 * device_interface in the commregion will be allocated and linked
548 * to the comm region.
551 int _aac_rx_init(struct aac_dev *dev)
553 unsigned long start;
554 unsigned long status;
555 int restart = 0;
556 int instance = dev->id;
557 const char * name = dev->name;
559 if (aac_adapter_ioremap(dev, dev->base_size)) {
560 printk(KERN_WARNING "%s: unable to map adapter.\n", name);
561 goto error_iounmap;
564 /* Failure to reset here is an option ... */
565 dev->a_ops.adapter_sync_cmd = rx_sync_cmd;
566 dev->a_ops.adapter_enable_int = aac_rx_disable_interrupt;
567 dev->OIMR = status = rx_readb (dev, MUnit.OIMR);
568 if ((((status & 0x0c) != 0x0c) || aac_reset_devices || reset_devices) &&
569 !aac_rx_restart_adapter(dev, 0))
570 /* Make sure the Hardware FIFO is empty */
571 while ((++restart < 512) &&
572 (rx_readl(dev, MUnit.OutboundQueue) != 0xFFFFFFFFL));
574 * Check to see if the board panic'd while booting.
576 status = rx_readl(dev, MUnit.OMRx[0]);
577 if (status & KERNEL_PANIC) {
578 if (aac_rx_restart_adapter(dev, aac_rx_check_health(dev)))
579 goto error_iounmap;
580 ++restart;
583 * Check to see if the board failed any self tests.
585 status = rx_readl(dev, MUnit.OMRx[0]);
586 if (status & SELF_TEST_FAILED) {
587 printk(KERN_ERR "%s%d: adapter self-test failed.\n", dev->name, instance);
588 goto error_iounmap;
591 * Check to see if the monitor panic'd while booting.
593 if (status & MONITOR_PANIC) {
594 printk(KERN_ERR "%s%d: adapter monitor panic.\n", dev->name, instance);
595 goto error_iounmap;
597 start = jiffies;
599 * Wait for the adapter to be up and running. Wait up to 3 minutes
601 while (!((status = rx_readl(dev, MUnit.OMRx[0])) & KERNEL_UP_AND_RUNNING))
603 if ((restart &&
604 (status & (KERNEL_PANIC|SELF_TEST_FAILED|MONITOR_PANIC))) ||
605 time_after(jiffies, start+HZ*startup_timeout)) {
606 printk(KERN_ERR "%s%d: adapter kernel failed to start, init status = %lx.\n",
607 dev->name, instance, status);
608 goto error_iounmap;
610 if (!restart &&
611 ((status & (KERNEL_PANIC|SELF_TEST_FAILED|MONITOR_PANIC)) ||
612 time_after(jiffies, start + HZ *
613 ((startup_timeout > 60)
614 ? (startup_timeout - 60)
615 : (startup_timeout / 2))))) {
616 if (likely(!aac_rx_restart_adapter(dev, aac_rx_check_health(dev))))
617 start = jiffies;
618 ++restart;
620 msleep(1);
622 if (restart && aac_commit)
623 aac_commit = 1;
625 * Fill in the common function dispatch table.
627 dev->a_ops.adapter_interrupt = aac_rx_interrupt_adapter;
628 dev->a_ops.adapter_disable_int = aac_rx_disable_interrupt;
629 dev->a_ops.adapter_notify = aac_rx_notify_adapter;
630 dev->a_ops.adapter_sync_cmd = rx_sync_cmd;
631 dev->a_ops.adapter_check_health = aac_rx_check_health;
632 dev->a_ops.adapter_restart = aac_rx_restart_adapter;
635 * First clear out all interrupts. Then enable the one's that we
636 * can handle.
638 aac_adapter_comm(dev, AAC_COMM_PRODUCER);
639 aac_adapter_disable_int(dev);
640 rx_writel(dev, MUnit.ODR, 0xffffffff);
641 aac_adapter_enable_int(dev);
643 if (aac_init_adapter(dev) == NULL)
644 goto error_iounmap;
645 aac_adapter_comm(dev, dev->comm_interface);
646 dev->sync_mode = 0; /* sync. mode not supported */
647 dev->msi = aac_msi && !pci_enable_msi(dev->pdev);
648 if (request_irq(dev->pdev->irq, dev->a_ops.adapter_intr,
649 IRQF_SHARED|IRQF_DISABLED, "aacraid", dev) < 0) {
650 if (dev->msi)
651 pci_disable_msi(dev->pdev);
652 printk(KERN_ERR "%s%d: Interrupt unavailable.\n",
653 name, instance);
654 goto error_iounmap;
656 dev->dbg_base = dev->scsi_host_ptr->base;
657 dev->dbg_base_mapped = dev->base;
658 dev->dbg_size = dev->base_size;
660 aac_adapter_enable_int(dev);
662 * Tell the adapter that all is configured, and it can
663 * start accepting requests
665 aac_rx_start_adapter(dev);
667 return 0;
669 error_iounmap:
671 return -1;
674 int aac_rx_init(struct aac_dev *dev)
677 * Fill in the function dispatch table.
679 dev->a_ops.adapter_ioremap = aac_rx_ioremap;
680 dev->a_ops.adapter_comm = aac_rx_select_comm;
682 return _aac_rx_init(dev);