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 */
60 index = dev->host_rrq_idx;
61 if (dev->host_rrq[index] == 0) {
62 u32 old_index = index;
66 if (index == dev->scsi_host_ptr->can_queue +
69 if (dev->host_rrq[index] != 0)
71 } while (index != old_index);
72 dev->host_rrq_idx = index;
76 /* remove toggle bit (31) */
77 handle = (dev->host_rrq[index] & 0x7fffffff);
78 /* check fast response bit (30) */
79 if (handle & 0x40000000)
85 aac_intr_normal(dev, handle-1, 0, isFastResponse, NULL);
87 dev->host_rrq[index++] = 0;
88 if (index == dev->scsi_host_ptr->can_queue +
91 dev->host_rrq_idx = index;
94 bellbits_shifted = (bellbits >> SRC_ODR_SHIFT);
95 if (bellbits_shifted & DoorBellAifPending) {
98 aac_intr_normal(dev, 0, 2, 0, NULL);
103 src_writel(dev, MUnit.ODR_C, bellbits);
110 * aac_src_disable_interrupt - Disable interrupts
114 static void aac_src_disable_interrupt(struct aac_dev *dev)
116 src_writel(dev, MUnit.OIMR, dev->OIMR = 0xffffffff);
120 * aac_src_enable_interrupt_message - Enable interrupts
124 static void aac_src_enable_interrupt_message(struct aac_dev *dev)
126 src_writel(dev, MUnit.OIMR, dev->OIMR = 0xfffffff8);
130 * src_sync_cmd - send a command and wait
132 * @command: Command to execute
133 * @p1: first parameter
134 * @ret: adapter status
136 * This routine will send a synchronous command to the adapter and wait
137 * for its completion.
140 static int src_sync_cmd(struct aac_dev *dev, u32 command,
141 u32 p1, u32 p2, u32 p3, u32 p4, u32 p5, u32 p6,
142 u32 *status, u32 * r1, u32 * r2, u32 * r3, u32 * r4)
148 * Write the command into Mailbox 0
150 writel(command, &dev->IndexRegs->Mailbox[0]);
152 * Write the parameters into Mailboxes 1 - 6
154 writel(p1, &dev->IndexRegs->Mailbox[1]);
155 writel(p2, &dev->IndexRegs->Mailbox[2]);
156 writel(p3, &dev->IndexRegs->Mailbox[3]);
157 writel(p4, &dev->IndexRegs->Mailbox[4]);
160 * Clear the synch command doorbell to start on a clean slate.
162 src_writel(dev, MUnit.ODR_C, OUTBOUNDDOORBELL_0 << SRC_ODR_SHIFT);
165 * Disable doorbell interrupts
167 src_writel(dev, MUnit.OIMR, dev->OIMR = 0xffffffff);
170 * Force the completion of the mask register write before issuing
173 src_readl(dev, MUnit.OIMR);
176 * Signal that there is a new synch command
178 src_writel(dev, MUnit.IDR, INBOUNDDOORBELL_0 << SRC_IDR_SHIFT);
184 * Wait up to 30 seconds
186 while (time_before(jiffies, start+30*HZ)) {
187 /* Delay 5 microseconds to let Mon960 get info. */
190 /* Mon960 will set doorbell0 bit
191 * when it has completed the command
193 if ((src_readl(dev, MUnit.ODR_R) >> SRC_ODR_SHIFT) & OUTBOUNDDOORBELL_0) {
194 /* Clear the doorbell */
197 OUTBOUNDDOORBELL_0 << SRC_ODR_SHIFT);
202 /* Yield the processor in case we are slow */
205 if (unlikely(ok != 1)) {
206 /* Restore interrupt mask even though we timed out */
207 aac_adapter_enable_int(dev);
211 /* Pull the synch status from Mailbox 0 */
213 *status = readl(&dev->IndexRegs->Mailbox[0]);
215 *r1 = readl(&dev->IndexRegs->Mailbox[1]);
217 *r2 = readl(&dev->IndexRegs->Mailbox[2]);
219 *r3 = readl(&dev->IndexRegs->Mailbox[3]);
221 *r4 = readl(&dev->IndexRegs->Mailbox[4]);
223 /* Clear the synch command doorbell */
224 src_writel(dev, MUnit.ODR_C, OUTBOUNDDOORBELL_0 << SRC_ODR_SHIFT);
226 /* Restore interrupt mask */
227 aac_adapter_enable_int(dev);
233 * aac_src_interrupt_adapter - interrupt adapter
236 * Send an interrupt to the i960 and breakpoint it.
239 static void aac_src_interrupt_adapter(struct aac_dev *dev)
241 src_sync_cmd(dev, BREAKPOINT_REQUEST,
243 NULL, NULL, NULL, NULL, NULL);
247 * aac_src_notify_adapter - send an event to the adapter
249 * @event: Event to send
251 * Notify the i960 that something it probably cares about has
255 static void aac_src_notify_adapter(struct aac_dev *dev, u32 event)
260 src_writel(dev, MUnit.ODR_C,
261 INBOUNDDOORBELL_1 << SRC_ODR_SHIFT);
263 case HostNormRespNotFull:
264 src_writel(dev, MUnit.ODR_C,
265 INBOUNDDOORBELL_4 << SRC_ODR_SHIFT);
267 case AdapNormRespQue:
268 src_writel(dev, MUnit.ODR_C,
269 INBOUNDDOORBELL_2 << SRC_ODR_SHIFT);
271 case HostNormCmdNotFull:
272 src_writel(dev, MUnit.ODR_C,
273 INBOUNDDOORBELL_3 << SRC_ODR_SHIFT);
276 src_writel(dev, MUnit.ODR_C,
277 INBOUNDDOORBELL_6 << SRC_ODR_SHIFT);
280 src_writel(dev, MUnit.ODR_C,
281 INBOUNDDOORBELL_5 << SRC_ODR_SHIFT);
290 * aac_src_start_adapter - activate adapter
293 * Start up processing on an i960 based AAC adapter
296 static void aac_src_start_adapter(struct aac_dev *dev)
298 struct aac_init *init;
301 init->HostElapsedSeconds = cpu_to_le32(get_seconds());
303 /* We can only use a 32 bit address here */
304 src_sync_cmd(dev, INIT_STRUCT_BASE_ADDRESS, (u32)(ulong)dev->init_pa,
305 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL);
309 * aac_src_check_health
310 * @dev: device to check if healthy
312 * Will attempt to determine if the specified adapter is alive and
313 * capable of handling requests, returning 0 if alive.
315 static int aac_src_check_health(struct aac_dev *dev)
317 u32 status = src_readl(dev, MUnit.OMR);
320 * Check to see if the board failed any self tests.
322 if (unlikely(status & SELF_TEST_FAILED))
326 * Check to see if the board panic'd.
328 if (unlikely(status & KERNEL_PANIC))
329 return (status >> 16) & 0xFF;
331 * Wait for the adapter to be up and running.
333 if (unlikely(!(status & KERNEL_UP_AND_RUNNING)))
342 * aac_src_deliver_message
345 * Will send a fib, returning 0 if successful.
347 static int aac_src_deliver_message(struct fib *fib)
349 struct aac_dev *dev = fib->dev;
350 struct aac_queue *q = &dev->queues->queue[AdapNormCmdQueue];
351 unsigned long qflags;
354 struct aac_fib_xporthdr *pFibX;
356 spin_lock_irqsave(q->lock, qflags);
358 spin_unlock_irqrestore(q->lock, qflags);
360 /* Calculate the amount to the fibsize bits */
361 fibsize = (sizeof(struct aac_fib_xporthdr) +
362 fib->hw_fib_va->header.Size + 127) / 128 - 1;
363 if (fibsize > (ALIGN32 - 1))
364 fibsize = ALIGN32 - 1;
366 /* Fill XPORT header */
367 pFibX = (struct aac_fib_xporthdr *)
368 ((unsigned char *)fib->hw_fib_va -
369 sizeof(struct aac_fib_xporthdr));
370 pFibX->Handle = fib->hw_fib_va->header.SenderData + 1;
371 pFibX->HostAddress = fib->hw_fib_pa;
372 pFibX->Size = fib->hw_fib_va->header.Size;
373 address = fib->hw_fib_pa - (u64)sizeof(struct aac_fib_xporthdr);
375 src_writel(dev, MUnit.IQ_H, (u32)(address >> 32));
376 src_writel(dev, MUnit.IQ_L, (u32)(address & 0xffffffff) + fibsize);
382 * @size: mapping resize request
385 static int aac_src_ioremap(struct aac_dev *dev, u32 size)
388 iounmap(dev->regs.src.bar0);
389 dev->regs.src.bar0 = NULL;
394 dev->regs.src.bar1 = ioremap(pci_resource_start(dev->pdev, 2),
395 AAC_MIN_SRC_BAR1_SIZE);
397 if (dev->regs.src.bar1 == NULL)
399 dev->base = dev->regs.src.bar0 = ioremap(dev->scsi_host_ptr->base,
401 if (dev->base == NULL) {
402 iounmap(dev->regs.src.bar1);
403 dev->regs.src.bar1 = NULL;
406 dev->IndexRegs = &((struct src_registers __iomem *)
407 dev->base)->IndexRegs;
411 static int aac_src_restart_adapter(struct aac_dev *dev, int bled)
417 printk(KERN_ERR "%s%d: adapter kernel panic'd %x.\n",
418 dev->name, dev->id, bled);
419 bled = aac_adapter_sync_cmd(dev, IOP_RESET_ALWAYS,
420 0, 0, 0, 0, 0, 0, &var, &reset_mask, NULL, NULL, NULL);
421 if (bled || (var != 0x00000001))
423 if (dev->supplement_adapter_info.SupportedOptions2 &
424 AAC_OPTION_DOORBELL_RESET) {
425 src_writel(dev, MUnit.IDR, reset_mask);
426 msleep(5000); /* Delay 5 seconds */
430 if (src_readl(dev, MUnit.OMR) & KERNEL_PANIC)
433 if (startup_timeout < 300)
434 startup_timeout = 300;
440 * aac_src_select_comm - Select communications method
442 * @comm: communications method
444 int aac_src_select_comm(struct aac_dev *dev, int comm)
447 case AAC_COMM_MESSAGE:
448 dev->a_ops.adapter_enable_int = aac_src_enable_interrupt_message;
449 dev->a_ops.adapter_intr = aac_src_intr_message;
450 dev->a_ops.adapter_deliver = aac_src_deliver_message;
459 * aac_src_init - initialize an Cardinal Frey Bar card
460 * @dev: device to configure
464 int aac_src_init(struct aac_dev *dev)
467 unsigned long status;
469 int instance = dev->id;
470 const char *name = dev->name;
472 dev->a_ops.adapter_ioremap = aac_src_ioremap;
473 dev->a_ops.adapter_comm = aac_src_select_comm;
475 dev->base_size = AAC_MIN_SRC_BAR0_SIZE;
476 if (aac_adapter_ioremap(dev, dev->base_size)) {
477 printk(KERN_WARNING "%s: unable to map adapter.\n", name);
481 /* Failure to reset here is an option ... */
482 dev->a_ops.adapter_sync_cmd = src_sync_cmd;
483 dev->a_ops.adapter_enable_int = aac_src_disable_interrupt;
484 if ((aac_reset_devices || reset_devices) &&
485 !aac_src_restart_adapter(dev, 0))
488 * Check to see if the board panic'd while booting.
490 status = src_readl(dev, MUnit.OMR);
491 if (status & KERNEL_PANIC) {
492 if (aac_src_restart_adapter(dev, aac_src_check_health(dev)))
497 * Check to see if the board failed any self tests.
499 status = src_readl(dev, MUnit.OMR);
500 if (status & SELF_TEST_FAILED) {
501 printk(KERN_ERR "%s%d: adapter self-test failed.\n",
502 dev->name, instance);
506 * Check to see if the monitor panic'd while booting.
508 if (status & MONITOR_PANIC) {
509 printk(KERN_ERR "%s%d: adapter monitor panic.\n",
510 dev->name, instance);
515 * Wait for the adapter to be up and running. Wait up to 3 minutes
517 while (!((status = src_readl(dev, MUnit.OMR)) &
518 KERNEL_UP_AND_RUNNING)) {
520 (status & (KERNEL_PANIC|SELF_TEST_FAILED|MONITOR_PANIC))) ||
521 time_after(jiffies, start+HZ*startup_timeout)) {
522 printk(KERN_ERR "%s%d: adapter kernel failed to start, init status = %lx.\n",
523 dev->name, instance, status);
527 ((status & (KERNEL_PANIC|SELF_TEST_FAILED|MONITOR_PANIC)) ||
528 time_after(jiffies, start + HZ *
529 ((startup_timeout > 60)
530 ? (startup_timeout - 60)
531 : (startup_timeout / 2))))) {
532 if (likely(!aac_src_restart_adapter(dev,
533 aac_src_check_health(dev))))
539 if (restart && aac_commit)
542 * Fill in the common function dispatch table.
544 dev->a_ops.adapter_interrupt = aac_src_interrupt_adapter;
545 dev->a_ops.adapter_disable_int = aac_src_disable_interrupt;
546 dev->a_ops.adapter_notify = aac_src_notify_adapter;
547 dev->a_ops.adapter_sync_cmd = src_sync_cmd;
548 dev->a_ops.adapter_check_health = aac_src_check_health;
549 dev->a_ops.adapter_restart = aac_src_restart_adapter;
552 * First clear out all interrupts. Then enable the one's that we
555 aac_adapter_comm(dev, AAC_COMM_MESSAGE);
556 aac_adapter_disable_int(dev);
557 src_writel(dev, MUnit.ODR_C, 0xffffffff);
558 aac_adapter_enable_int(dev);
560 if (aac_init_adapter(dev) == NULL)
562 if (dev->comm_interface != AAC_COMM_MESSAGE_TYPE1)
565 dev->msi = aac_msi && !pci_enable_msi(dev->pdev);
567 if (request_irq(dev->pdev->irq, dev->a_ops.adapter_intr,
568 IRQF_SHARED|IRQF_DISABLED, "aacraid", dev) < 0) {
571 pci_disable_msi(dev->pdev);
573 printk(KERN_ERR "%s%d: Interrupt unavailable.\n",
577 dev->dbg_base = pci_resource_start(dev->pdev, 2);
578 dev->dbg_base_mapped = dev->regs.src.bar1;
579 dev->dbg_size = AAC_MIN_SRC_BAR1_SIZE;
581 aac_adapter_enable_int(dev);
583 * Tell the adapter that all is configured, and it can
584 * start accepting requests
586 aac_src_start_adapter(dev);