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)
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.
28 * Abstract: Hardware Device Interface for PMC SRC based controllers
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/slab.h>
38 #include <linux/blkdev.h>
39 #include <linux/delay.h>
40 #include <linux/completion.h>
41 #include <linux/time.h>
42 #include <linux/interrupt.h>
43 #include <scsi/scsi_host.h>
47 static irqreturn_t aac_src_intr_message(int irq, void *dev_id)
49 struct aac_dev *dev = dev_id;
50 unsigned long bellbits, bellbits_shifted;
51 int our_interrupt = 0;
55 bellbits = src_readl(dev, MUnit.ODR_R);
56 if (bellbits & PmDoorBellResponseSent) {
57 bellbits = PmDoorBellResponseSent;
58 /* handle async. status */
59 src_writel(dev, MUnit.ODR_C, bellbits);
60 src_readl(dev, MUnit.ODR_C);
62 index = dev->host_rrq_idx;
65 /* remove toggle bit (31) */
66 handle = le32_to_cpu(dev->host_rrq[index]) & 0x7fffffff;
67 /* check fast response bit (30) */
68 if (handle & 0x40000000)
74 aac_intr_normal(dev, handle-1, 0, isFastResponse, NULL);
76 dev->host_rrq[index++] = 0;
77 if (index == dev->scsi_host_ptr->can_queue +
80 dev->host_rrq_idx = index;
83 bellbits_shifted = (bellbits >> SRC_ODR_SHIFT);
84 if (bellbits_shifted & DoorBellAifPending) {
85 src_writel(dev, MUnit.ODR_C, bellbits);
86 src_readl(dev, MUnit.ODR_C);
89 aac_intr_normal(dev, 0, 2, 0, NULL);
90 } else if (bellbits_shifted & OUTBOUNDDOORBELL_0) {
92 struct list_head *entry;
94 extern int aac_sync_mode;
97 src_writel(dev, MUnit.ODR_C, bellbits);
98 src_readl(dev, MUnit.ODR_C);
104 if (dev->sync_fib->callback)
105 dev->sync_fib->callback(dev->sync_fib->callback_data,
107 spin_lock_irqsave(&dev->sync_fib->event_lock, sflags);
108 if (dev->sync_fib->flags & FIB_CONTEXT_FLAG_WAIT) {
109 dev->management_fib_count--;
110 up(&dev->sync_fib->event_wait);
112 spin_unlock_irqrestore(&dev->sync_fib->event_lock, sflags);
113 spin_lock_irqsave(&dev->sync_lock, sflags);
114 if (!list_empty(&dev->sync_fib_list)) {
115 entry = dev->sync_fib_list.next;
116 dev->sync_fib = list_entry(entry, struct fib, fiblink);
120 dev->sync_fib = NULL;
122 spin_unlock_irqrestore(&dev->sync_lock, sflags);
124 aac_adapter_sync_cmd(dev, SEND_SYNCHRONOUS_FIB,
125 (u32)dev->sync_fib->hw_fib_pa, 0, 0, 0, 0, 0,
126 NULL, NULL, NULL, NULL, NULL);
139 * aac_src_disable_interrupt - Disable interrupts
143 static void aac_src_disable_interrupt(struct aac_dev *dev)
145 src_writel(dev, MUnit.OIMR, dev->OIMR = 0xffffffff);
149 * aac_src_enable_interrupt_message - Enable interrupts
153 static void aac_src_enable_interrupt_message(struct aac_dev *dev)
155 src_writel(dev, MUnit.OIMR, dev->OIMR = 0xfffffff8);
159 * src_sync_cmd - send a command and wait
161 * @command: Command to execute
162 * @p1: first parameter
163 * @ret: adapter status
165 * This routine will send a synchronous command to the adapter and wait
166 * for its completion.
169 static int src_sync_cmd(struct aac_dev *dev, u32 command,
170 u32 p1, u32 p2, u32 p3, u32 p4, u32 p5, u32 p6,
171 u32 *status, u32 * r1, u32 * r2, u32 * r3, u32 * r4)
177 * Write the command into Mailbox 0
179 writel(command, &dev->IndexRegs->Mailbox[0]);
181 * Write the parameters into Mailboxes 1 - 6
183 writel(p1, &dev->IndexRegs->Mailbox[1]);
184 writel(p2, &dev->IndexRegs->Mailbox[2]);
185 writel(p3, &dev->IndexRegs->Mailbox[3]);
186 writel(p4, &dev->IndexRegs->Mailbox[4]);
189 * Clear the synch command doorbell to start on a clean slate.
191 src_writel(dev, MUnit.ODR_C, OUTBOUNDDOORBELL_0 << SRC_ODR_SHIFT);
194 * Disable doorbell interrupts
196 src_writel(dev, MUnit.OIMR, dev->OIMR = 0xffffffff);
199 * Force the completion of the mask register write before issuing
202 src_readl(dev, MUnit.OIMR);
205 * Signal that there is a new synch command
207 src_writel(dev, MUnit.IDR, INBOUNDDOORBELL_0 << SRC_IDR_SHIFT);
209 if (!dev->sync_mode || command != SEND_SYNCHRONOUS_FIB) {
214 * Wait up to 5 minutes
216 while (time_before(jiffies, start+300*HZ)) {
217 udelay(5); /* Delay 5 microseconds to let Mon960 get info. */
219 * Mon960 will set doorbell0 bit when it has completed the command.
221 if ((src_readl(dev, MUnit.ODR_R) >> SRC_ODR_SHIFT) & OUTBOUNDDOORBELL_0) {
223 * Clear the doorbell.
225 src_writel(dev, MUnit.ODR_C, OUTBOUNDDOORBELL_0 << SRC_ODR_SHIFT);
230 * Yield the processor in case we are slow
234 if (unlikely(ok != 1)) {
236 * Restore interrupt mask even though we timed out
238 aac_adapter_enable_int(dev);
242 * Pull the synch status from Mailbox 0.
245 *status = readl(&dev->IndexRegs->Mailbox[0]);
247 *r1 = readl(&dev->IndexRegs->Mailbox[1]);
249 *r2 = readl(&dev->IndexRegs->Mailbox[2]);
251 *r3 = readl(&dev->IndexRegs->Mailbox[3]);
253 *r4 = readl(&dev->IndexRegs->Mailbox[4]);
256 * Clear the synch command doorbell.
258 src_writel(dev, MUnit.ODR_C, OUTBOUNDDOORBELL_0 << SRC_ODR_SHIFT);
262 * Restore interrupt mask
264 aac_adapter_enable_int(dev);
269 * aac_src_interrupt_adapter - interrupt adapter
272 * Send an interrupt to the i960 and breakpoint it.
275 static void aac_src_interrupt_adapter(struct aac_dev *dev)
277 src_sync_cmd(dev, BREAKPOINT_REQUEST,
279 NULL, NULL, NULL, NULL, NULL);
283 * aac_src_notify_adapter - send an event to the adapter
285 * @event: Event to send
287 * Notify the i960 that something it probably cares about has
291 static void aac_src_notify_adapter(struct aac_dev *dev, u32 event)
296 src_writel(dev, MUnit.ODR_C,
297 INBOUNDDOORBELL_1 << SRC_ODR_SHIFT);
299 case HostNormRespNotFull:
300 src_writel(dev, MUnit.ODR_C,
301 INBOUNDDOORBELL_4 << SRC_ODR_SHIFT);
303 case AdapNormRespQue:
304 src_writel(dev, MUnit.ODR_C,
305 INBOUNDDOORBELL_2 << SRC_ODR_SHIFT);
307 case HostNormCmdNotFull:
308 src_writel(dev, MUnit.ODR_C,
309 INBOUNDDOORBELL_3 << SRC_ODR_SHIFT);
312 src_writel(dev, MUnit.ODR_C,
313 INBOUNDDOORBELL_6 << SRC_ODR_SHIFT);
316 src_writel(dev, MUnit.ODR_C,
317 INBOUNDDOORBELL_5 << SRC_ODR_SHIFT);
326 * aac_src_start_adapter - activate adapter
329 * Start up processing on an i960 based AAC adapter
332 static void aac_src_start_adapter(struct aac_dev *dev)
334 struct aac_init *init;
336 /* reset host_rrq_idx first */
337 dev->host_rrq_idx = 0;
340 init->HostElapsedSeconds = cpu_to_le32(get_seconds());
342 /* We can only use a 32 bit address here */
343 src_sync_cmd(dev, INIT_STRUCT_BASE_ADDRESS, (u32)(ulong)dev->init_pa,
344 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL);
348 * aac_src_check_health
349 * @dev: device to check if healthy
351 * Will attempt to determine if the specified adapter is alive and
352 * capable of handling requests, returning 0 if alive.
354 static int aac_src_check_health(struct aac_dev *dev)
356 u32 status = src_readl(dev, MUnit.OMR);
359 * Check to see if the board failed any self tests.
361 if (unlikely(status & SELF_TEST_FAILED))
365 * Check to see if the board panic'd.
367 if (unlikely(status & KERNEL_PANIC))
368 return (status >> 16) & 0xFF;
370 * Wait for the adapter to be up and running.
372 if (unlikely(!(status & KERNEL_UP_AND_RUNNING)))
381 * aac_src_deliver_message
384 * Will send a fib, returning 0 if successful.
386 static int aac_src_deliver_message(struct fib *fib)
388 struct aac_dev *dev = fib->dev;
389 struct aac_queue *q = &dev->queues->queue[AdapNormCmdQueue];
390 unsigned long qflags;
393 struct aac_fib_xporthdr *pFibX;
394 u16 hdr_size = le16_to_cpu(fib->hw_fib_va->header.Size);
396 spin_lock_irqsave(q->lock, qflags);
398 spin_unlock_irqrestore(q->lock, qflags);
400 if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE2) {
401 /* Calculate the amount to the fibsize bits */
402 fibsize = (hdr_size + 127) / 128 - 1;
403 if (fibsize > (ALIGN32 - 1))
405 /* New FIB header, 32-bit */
406 address = fib->hw_fib_pa;
407 fib->hw_fib_va->header.StructType = FIB_MAGIC2;
408 fib->hw_fib_va->header.SenderFibAddress = (u32)address;
409 fib->hw_fib_va->header.u.TimeStamp = 0;
410 BUG_ON(upper_32_bits(address) != 0L);
413 /* Calculate the amount to the fibsize bits */
414 fibsize = (sizeof(struct aac_fib_xporthdr) + hdr_size + 127) / 128 - 1;
415 if (fibsize > (ALIGN32 - 1))
418 /* Fill XPORT header */
419 pFibX = (void *)fib->hw_fib_va - sizeof(struct aac_fib_xporthdr);
420 pFibX->Handle = cpu_to_le32(fib->hw_fib_va->header.Handle);
421 pFibX->HostAddress = cpu_to_le64(fib->hw_fib_pa);
422 pFibX->Size = cpu_to_le32(hdr_size);
425 * The xport header has been 32-byte aligned for us so that fibsize
426 * can be masked out of this address by hardware. -- BenC
428 address = fib->hw_fib_pa - sizeof(struct aac_fib_xporthdr);
429 if (address & (ALIGN32 - 1))
434 src_writel(dev, MUnit.IQ_H, upper_32_bits(address) & 0xffffffff);
435 src_writel(dev, MUnit.IQ_L, address & 0xffffffff);
442 * @size: mapping resize request
445 static int aac_src_ioremap(struct aac_dev *dev, u32 size)
448 iounmap(dev->regs.src.bar1);
449 dev->regs.src.bar1 = NULL;
450 iounmap(dev->regs.src.bar0);
451 dev->base = dev->regs.src.bar0 = NULL;
454 dev->regs.src.bar1 = ioremap(pci_resource_start(dev->pdev, 2),
455 AAC_MIN_SRC_BAR1_SIZE);
457 if (dev->regs.src.bar1 == NULL)
459 dev->base = dev->regs.src.bar0 = ioremap(dev->base_start, size);
460 if (dev->base == NULL) {
461 iounmap(dev->regs.src.bar1);
462 dev->regs.src.bar1 = NULL;
465 dev->IndexRegs = &((struct src_registers __iomem *)
466 dev->base)->u.tupelo.IndexRegs;
472 * @size: mapping resize request
475 static int aac_srcv_ioremap(struct aac_dev *dev, u32 size)
478 iounmap(dev->regs.src.bar0);
479 dev->base = dev->regs.src.bar0 = NULL;
482 dev->base = dev->regs.src.bar0 = ioremap(dev->base_start, size);
483 if (dev->base == NULL)
485 dev->IndexRegs = &((struct src_registers __iomem *)
486 dev->base)->u.denali.IndexRegs;
490 static int aac_src_restart_adapter(struct aac_dev *dev, int bled)
496 printk(KERN_ERR "%s%d: adapter kernel panic'd %x.\n",
497 dev->name, dev->id, bled);
498 bled = aac_adapter_sync_cmd(dev, IOP_RESET_ALWAYS,
499 0, 0, 0, 0, 0, 0, &var, &reset_mask, NULL, NULL, NULL);
500 if (bled || (var != 0x00000001))
502 if (dev->supplement_adapter_info.SupportedOptions2 &
503 AAC_OPTION_DOORBELL_RESET) {
504 src_writel(dev, MUnit.IDR, reset_mask);
505 msleep(5000); /* Delay 5 seconds */
509 if (src_readl(dev, MUnit.OMR) & KERNEL_PANIC)
512 if (startup_timeout < 300)
513 startup_timeout = 300;
519 * aac_src_select_comm - Select communications method
521 * @comm: communications method
523 int aac_src_select_comm(struct aac_dev *dev, int comm)
526 case AAC_COMM_MESSAGE:
527 dev->a_ops.adapter_enable_int = aac_src_enable_interrupt_message;
528 dev->a_ops.adapter_intr = aac_src_intr_message;
529 dev->a_ops.adapter_deliver = aac_src_deliver_message;
538 * aac_src_init - initialize an Cardinal Frey Bar card
539 * @dev: device to configure
543 int aac_src_init(struct aac_dev *dev)
546 unsigned long status;
548 int instance = dev->id;
549 const char *name = dev->name;
551 dev->a_ops.adapter_ioremap = aac_src_ioremap;
552 dev->a_ops.adapter_comm = aac_src_select_comm;
554 dev->base_size = AAC_MIN_SRC_BAR0_SIZE;
555 if (aac_adapter_ioremap(dev, dev->base_size)) {
556 printk(KERN_WARNING "%s: unable to map adapter.\n", name);
560 /* Failure to reset here is an option ... */
561 dev->a_ops.adapter_sync_cmd = src_sync_cmd;
562 dev->a_ops.adapter_enable_int = aac_src_disable_interrupt;
563 if ((aac_reset_devices || reset_devices) &&
564 !aac_src_restart_adapter(dev, 0))
567 * Check to see if the board panic'd while booting.
569 status = src_readl(dev, MUnit.OMR);
570 if (status & KERNEL_PANIC) {
571 if (aac_src_restart_adapter(dev, aac_src_check_health(dev)))
576 * Check to see if the board failed any self tests.
578 status = src_readl(dev, MUnit.OMR);
579 if (status & SELF_TEST_FAILED) {
580 printk(KERN_ERR "%s%d: adapter self-test failed.\n",
581 dev->name, instance);
585 * Check to see if the monitor panic'd while booting.
587 if (status & MONITOR_PANIC) {
588 printk(KERN_ERR "%s%d: adapter monitor panic.\n",
589 dev->name, instance);
594 * Wait for the adapter to be up and running. Wait up to 3 minutes
596 while (!((status = src_readl(dev, MUnit.OMR)) &
597 KERNEL_UP_AND_RUNNING)) {
599 (status & (KERNEL_PANIC|SELF_TEST_FAILED|MONITOR_PANIC))) ||
600 time_after(jiffies, start+HZ*startup_timeout)) {
601 printk(KERN_ERR "%s%d: adapter kernel failed to start, init status = %lx.\n",
602 dev->name, instance, status);
606 ((status & (KERNEL_PANIC|SELF_TEST_FAILED|MONITOR_PANIC)) ||
607 time_after(jiffies, start + HZ *
608 ((startup_timeout > 60)
609 ? (startup_timeout - 60)
610 : (startup_timeout / 2))))) {
611 if (likely(!aac_src_restart_adapter(dev,
612 aac_src_check_health(dev))))
618 if (restart && aac_commit)
621 * Fill in the common function dispatch table.
623 dev->a_ops.adapter_interrupt = aac_src_interrupt_adapter;
624 dev->a_ops.adapter_disable_int = aac_src_disable_interrupt;
625 dev->a_ops.adapter_notify = aac_src_notify_adapter;
626 dev->a_ops.adapter_sync_cmd = src_sync_cmd;
627 dev->a_ops.adapter_check_health = aac_src_check_health;
628 dev->a_ops.adapter_restart = aac_src_restart_adapter;
631 * First clear out all interrupts. Then enable the one's that we
634 aac_adapter_comm(dev, AAC_COMM_MESSAGE);
635 aac_adapter_disable_int(dev);
636 src_writel(dev, MUnit.ODR_C, 0xffffffff);
637 aac_adapter_enable_int(dev);
639 if (aac_init_adapter(dev) == NULL)
641 if (dev->comm_interface != AAC_COMM_MESSAGE_TYPE1)
644 dev->msi = aac_msi && !pci_enable_msi(dev->pdev);
646 if (request_irq(dev->pdev->irq, dev->a_ops.adapter_intr,
647 IRQF_SHARED|IRQF_DISABLED, "aacraid", dev) < 0) {
650 pci_disable_msi(dev->pdev);
652 printk(KERN_ERR "%s%d: Interrupt unavailable.\n",
656 dev->dbg_base = pci_resource_start(dev->pdev, 2);
657 dev->dbg_base_mapped = dev->regs.src.bar1;
658 dev->dbg_size = AAC_MIN_SRC_BAR1_SIZE;
660 aac_adapter_enable_int(dev);
662 if (!dev->sync_mode) {
664 * Tell the adapter that all is configured, and it can
665 * start accepting requests
667 aac_src_start_adapter(dev);
677 * aac_srcv_init - initialize an SRCv card
678 * @dev: device to configure
682 int aac_srcv_init(struct aac_dev *dev)
685 unsigned long status;
687 int instance = dev->id;
688 const char *name = dev->name;
690 dev->a_ops.adapter_ioremap = aac_srcv_ioremap;
691 dev->a_ops.adapter_comm = aac_src_select_comm;
693 dev->base_size = AAC_MIN_SRCV_BAR0_SIZE;
694 if (aac_adapter_ioremap(dev, dev->base_size)) {
695 printk(KERN_WARNING "%s: unable to map adapter.\n", name);
699 /* Failure to reset here is an option ... */
700 dev->a_ops.adapter_sync_cmd = src_sync_cmd;
701 dev->a_ops.adapter_enable_int = aac_src_disable_interrupt;
702 if ((aac_reset_devices || reset_devices) &&
703 !aac_src_restart_adapter(dev, 0))
706 * Check to see if the board panic'd while booting.
708 status = src_readl(dev, MUnit.OMR);
709 if (status & KERNEL_PANIC) {
710 if (aac_src_restart_adapter(dev, aac_src_check_health(dev)))
715 * Check to see if the board failed any self tests.
717 status = src_readl(dev, MUnit.OMR);
718 if (status & SELF_TEST_FAILED) {
719 printk(KERN_ERR "%s%d: adapter self-test failed.\n", dev->name, instance);
723 * Check to see if the monitor panic'd while booting.
725 if (status & MONITOR_PANIC) {
726 printk(KERN_ERR "%s%d: adapter monitor panic.\n", dev->name, instance);
731 * Wait for the adapter to be up and running. Wait up to 3 minutes
733 while (!((status = src_readl(dev, MUnit.OMR)) & KERNEL_UP_AND_RUNNING)) {
735 (status & (KERNEL_PANIC|SELF_TEST_FAILED|MONITOR_PANIC))) ||
736 time_after(jiffies, start+HZ*startup_timeout)) {
737 printk(KERN_ERR "%s%d: adapter kernel failed to start, init status = %lx.\n",
738 dev->name, instance, status);
742 ((status & (KERNEL_PANIC|SELF_TEST_FAILED|MONITOR_PANIC)) ||
743 time_after(jiffies, start + HZ *
744 ((startup_timeout > 60)
745 ? (startup_timeout - 60)
746 : (startup_timeout / 2))))) {
747 if (likely(!aac_src_restart_adapter(dev, aac_src_check_health(dev))))
753 if (restart && aac_commit)
756 * Fill in the common function dispatch table.
758 dev->a_ops.adapter_interrupt = aac_src_interrupt_adapter;
759 dev->a_ops.adapter_disable_int = aac_src_disable_interrupt;
760 dev->a_ops.adapter_notify = aac_src_notify_adapter;
761 dev->a_ops.adapter_sync_cmd = src_sync_cmd;
762 dev->a_ops.adapter_check_health = aac_src_check_health;
763 dev->a_ops.adapter_restart = aac_src_restart_adapter;
766 * First clear out all interrupts. Then enable the one's that we
769 aac_adapter_comm(dev, AAC_COMM_MESSAGE);
770 aac_adapter_disable_int(dev);
771 src_writel(dev, MUnit.ODR_C, 0xffffffff);
772 aac_adapter_enable_int(dev);
774 if (aac_init_adapter(dev) == NULL)
776 if (dev->comm_interface != AAC_COMM_MESSAGE_TYPE2)
778 dev->msi = aac_msi && !pci_enable_msi(dev->pdev);
779 if (request_irq(dev->pdev->irq, dev->a_ops.adapter_intr,
780 IRQF_SHARED|IRQF_DISABLED, "aacraid", dev) < 0) {
782 pci_disable_msi(dev->pdev);
783 printk(KERN_ERR "%s%d: Interrupt unavailable.\n",
787 dev->dbg_base = dev->base_start;
788 dev->dbg_base_mapped = dev->base;
789 dev->dbg_size = dev->base_size;
791 aac_adapter_enable_int(dev);
793 if (!dev->sync_mode) {
795 * Tell the adapter that all is configured, and it can
796 * start accepting requests
798 aac_src_start_adapter(dev);