2 * Adaptec AAC series RAID controller driver
3 * (c) Copyright 2001 Red Hat Inc. <alan@redhat.com>
5 * based on the old aacraid driver that is..
6 * Adaptec aacraid device driver for Linux.
8 * Copyright (c) 2000 Adaptec, Inc. (aacraid@adaptec.com)
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2, or (at your option)
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; see the file COPYING. If not, write to
22 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
27 * Abstract: Hardware miniport for Drawbridge specific hardware functions.
31 #include <linux/kernel.h>
32 #include <linux/init.h>
33 #include <linux/types.h>
34 #include <linux/sched.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 <asm/semaphore.h>
45 #include <scsi/scsi_host.h>
49 static irqreturn_t aac_rkt_intr(int irq, void *dev_id, struct pt_regs *regs)
51 struct aac_dev *dev = dev_id;
53 if (dev->new_comm_interface) {
54 u32 Index = rkt_readl(dev, MUnit.OutboundQueue);
55 if (Index == 0xFFFFFFFFL)
56 Index = rkt_readl(dev, MUnit.OutboundQueue);
57 if (Index != 0xFFFFFFFFL) {
59 if (aac_intr_normal(dev, Index)) {
60 rkt_writel(dev, MUnit.OutboundQueue, Index);
61 rkt_writel(dev, MUnit.ODR, DoorBellAdapterNormRespReady);
63 Index = rkt_readl(dev, MUnit.OutboundQueue);
64 } while (Index != 0xFFFFFFFFL);
68 unsigned long bellbits;
70 intstat = rkt_readb(dev, MUnit.OISR);
72 * Read mask and invert because drawbridge is reversed.
73 * This allows us to only service interrupts that have
75 * Check to see if this is our interrupt. If it isn't just return
77 if (intstat & ~(dev->OIMR))
79 bellbits = rkt_readl(dev, OutboundDoorbellReg);
80 if (bellbits & DoorBellPrintfReady) {
81 aac_printf(dev, rkt_readl (dev, IndexRegs.Mailbox[5]));
82 rkt_writel(dev, MUnit.ODR,DoorBellPrintfReady);
83 rkt_writel(dev, InboundDoorbellReg,DoorBellPrintfDone);
85 else if (bellbits & DoorBellAdapterNormCmdReady) {
86 rkt_writel(dev, MUnit.ODR, DoorBellAdapterNormCmdReady);
87 aac_command_normal(&dev->queues->queue[HostNormCmdQueue]);
88 // rkt_writel(dev, MUnit.ODR, DoorBellAdapterNormCmdReady);
90 else if (bellbits & DoorBellAdapterNormRespReady) {
91 rkt_writel(dev, MUnit.ODR,DoorBellAdapterNormRespReady);
92 aac_response_normal(&dev->queues->queue[HostNormRespQueue]);
94 else if (bellbits & DoorBellAdapterNormCmdNotFull) {
95 rkt_writel(dev, MUnit.ODR, DoorBellAdapterNormCmdNotFull);
97 else if (bellbits & DoorBellAdapterNormRespNotFull) {
98 rkt_writel(dev, MUnit.ODR, DoorBellAdapterNormCmdNotFull);
99 rkt_writel(dev, MUnit.ODR, DoorBellAdapterNormRespNotFull);
108 * aac_rkt_disable_interrupt - Disable interrupts
112 static void aac_rkt_disable_interrupt(struct aac_dev *dev)
114 rkt_writeb(dev, MUnit.OIMR, dev->OIMR = 0xff);
118 * rkt_sync_cmd - send a command and wait
120 * @command: Command to execute
121 * @p1: first parameter
122 * @ret: adapter status
124 * This routine will send a synchronous command to the adapter and wait
125 * for its completion.
128 static int rkt_sync_cmd(struct aac_dev *dev, u32 command,
129 u32 p1, u32 p2, u32 p3, u32 p4, u32 p5, u32 p6,
130 u32 *status, u32 *r1, u32 *r2, u32 *r3, u32 *r4)
135 * Write the command into Mailbox 0
137 rkt_writel(dev, InboundMailbox0, command);
139 * Write the parameters into Mailboxes 1 - 6
141 rkt_writel(dev, InboundMailbox1, p1);
142 rkt_writel(dev, InboundMailbox2, p2);
143 rkt_writel(dev, InboundMailbox3, p3);
144 rkt_writel(dev, InboundMailbox4, p4);
146 * Clear the synch command doorbell to start on a clean slate.
148 rkt_writel(dev, OutboundDoorbellReg, OUTBOUNDDOORBELL_0);
150 * Disable doorbell interrupts
152 rkt_writeb(dev, MUnit.OIMR, dev->OIMR = 0xff);
154 * Force the completion of the mask register write before issuing
157 rkt_readb (dev, MUnit.OIMR);
159 * Signal that there is a new synch command
161 rkt_writel(dev, InboundDoorbellReg, INBOUNDDOORBELL_0);
167 * Wait up to 30 seconds
169 while (time_before(jiffies, start+30*HZ))
171 udelay(5); /* Delay 5 microseconds to let Mon960 get info. */
173 * Mon960 will set doorbell0 bit when it has completed the command.
175 if (rkt_readl(dev, OutboundDoorbellReg) & OUTBOUNDDOORBELL_0) {
177 * Clear the doorbell.
179 rkt_writel(dev, OutboundDoorbellReg, OUTBOUNDDOORBELL_0);
184 * Yield the processor in case we are slow
190 * Restore interrupt mask even though we timed out
192 if (dev->new_comm_interface)
193 rkt_writeb(dev, MUnit.OIMR, dev->OIMR = 0xf7);
195 rkt_writeb(dev, MUnit.OIMR, dev->OIMR = 0xfb);
199 * Pull the synch status from Mailbox 0.
202 *status = rkt_readl(dev, IndexRegs.Mailbox[0]);
204 *r1 = rkt_readl(dev, IndexRegs.Mailbox[1]);
206 *r2 = rkt_readl(dev, IndexRegs.Mailbox[2]);
208 *r3 = rkt_readl(dev, IndexRegs.Mailbox[3]);
210 *r4 = rkt_readl(dev, IndexRegs.Mailbox[4]);
212 * Clear the synch command doorbell.
214 rkt_writel(dev, OutboundDoorbellReg, OUTBOUNDDOORBELL_0);
216 * Restore interrupt mask
218 if (dev->new_comm_interface)
219 rkt_writeb(dev, MUnit.OIMR, dev->OIMR = 0xf7);
221 rkt_writeb(dev, MUnit.OIMR, dev->OIMR = 0xfb);
227 * aac_rkt_interrupt_adapter - interrupt adapter
230 * Send an interrupt to the i960 and breakpoint it.
233 static void aac_rkt_interrupt_adapter(struct aac_dev *dev)
235 rkt_sync_cmd(dev, BREAKPOINT_REQUEST, 0, 0, 0, 0, 0, 0,
236 NULL, NULL, NULL, NULL, NULL);
240 * aac_rkt_notify_adapter - send an event to the adapter
242 * @event: Event to send
244 * Notify the i960 that something it probably cares about has
248 static void aac_rkt_notify_adapter(struct aac_dev *dev, u32 event)
253 rkt_writel(dev, MUnit.IDR,INBOUNDDOORBELL_1);
255 case HostNormRespNotFull:
256 rkt_writel(dev, MUnit.IDR,INBOUNDDOORBELL_4);
258 case AdapNormRespQue:
259 rkt_writel(dev, MUnit.IDR,INBOUNDDOORBELL_2);
261 case HostNormCmdNotFull:
262 rkt_writel(dev, MUnit.IDR,INBOUNDDOORBELL_3);
265 // rkt_sync_cmd(dev, HOST_CRASHING, 0, 0, 0, 0, 0, 0,
266 // NULL, NULL, NULL, NULL, NULL);
269 rkt_writel(dev, MUnit.IDR,INBOUNDDOORBELL_6);
272 rkt_writel(dev, MUnit.IDR,INBOUNDDOORBELL_5);
281 * aac_rkt_start_adapter - activate adapter
284 * Start up processing on an i960 based AAC adapter
287 static void aac_rkt_start_adapter(struct aac_dev *dev)
289 struct aac_init *init;
292 init->HostElapsedSeconds = cpu_to_le32(get_seconds());
293 // We can only use a 32 bit address here
294 rkt_sync_cmd(dev, INIT_STRUCT_BASE_ADDRESS, (u32)(ulong)dev->init_pa,
295 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL);
299 * aac_rkt_check_health
300 * @dev: device to check if healthy
302 * Will attempt to determine if the specified adapter is alive and
303 * capable of handling requests, returning 0 if alive.
305 static int aac_rkt_check_health(struct aac_dev *dev)
307 u32 status = rkt_readl(dev, MUnit.OMRx[0]);
310 * Check to see if the board failed any self tests.
312 if (status & SELF_TEST_FAILED)
315 * Check to see if the board panic'd.
317 if (status & KERNEL_PANIC) {
323 dma_addr_t paddr, baddr;
326 if ((status & 0xFF000000L) == 0xBC000000L)
327 return (status >> 16) & 0xFF;
328 buffer = pci_alloc_consistent(dev->pdev, 512, &baddr);
332 post = pci_alloc_consistent(dev->pdev,
333 sizeof(struct POSTSTATUS), &paddr);
335 pci_free_consistent(dev->pdev, 512, buffer, baddr);
338 memset(buffer, 0, 512);
339 post->Post_Command = cpu_to_le32(COMMAND_POST_RESULTS);
340 post->Post_Address = cpu_to_le32(baddr);
341 rkt_writel(dev, MUnit.IMRx[0], paddr);
342 rkt_sync_cmd(dev, COMMAND_POST_RESULTS, baddr, 0, 0, 0, 0, 0,
343 NULL, NULL, NULL, NULL, NULL);
344 pci_free_consistent(dev->pdev, sizeof(struct POSTSTATUS),
346 if ((buffer[0] == '0') && ((buffer[1] == 'x') || (buffer[1] == 'X'))) {
347 ret = (buffer[2] <= '9') ? (buffer[2] - '0') : (buffer[2] - 'A' + 10);
349 ret += (buffer[3] <= '9') ? (buffer[3] - '0') : (buffer[3] - 'A' + 10);
351 pci_free_consistent(dev->pdev, 512, buffer, baddr);
355 * Wait for the adapter to be up and running.
357 if (!(status & KERNEL_UP_AND_RUNNING))
369 * Will send a fib, returning 0 if successful.
371 static int aac_rkt_send(struct fib * fib)
373 u64 addr = fib->hw_fib_pa;
374 struct aac_dev *dev = fib->dev;
375 volatile void __iomem *device = dev->regs.rkt;
378 dprintk((KERN_DEBUG "%p->aac_rkt_send(%p->%llx)\n", dev, fib, addr));
379 Index = rkt_readl(dev, MUnit.InboundQueue);
380 if (Index == 0xFFFFFFFFL)
381 Index = rkt_readl(dev, MUnit.InboundQueue);
382 dprintk((KERN_DEBUG "Index = 0x%x\n", Index));
383 if (Index == 0xFFFFFFFFL)
386 dprintk((KERN_DEBUG "entry = %x %x %u\n", (u32)(addr & 0xffffffff),
387 (u32)(addr >> 32), (u32)le16_to_cpu(fib->hw_fib->header.Size)));
388 writel((u32)(addr & 0xffffffff), device);
389 device += sizeof(u32);
390 writel((u32)(addr >> 32), device);
391 device += sizeof(u32);
392 writel(le16_to_cpu(fib->hw_fib->header.Size), device);
393 rkt_writel(dev, MUnit.InboundQueue, Index);
394 dprintk((KERN_DEBUG "aac_rkt_send - return 0\n"));
399 * aac_rkt_init - initialize an i960 based AAC card
400 * @dev: device to configure
402 * Allocate and set up resources for the i960 based AAC variants. The
403 * device_interface in the commregion will be allocated and linked
404 * to the comm region.
407 int aac_rkt_init(struct aac_dev *dev)
410 unsigned long status;
418 * Check to see if the board panic'd while booting.
421 * Check to see if the board failed any self tests.
423 if (rkt_readl(dev, MUnit.OMRx[0]) & SELF_TEST_FAILED) {
424 printk(KERN_ERR "%s%d: adapter self-test failed.\n", dev->name, instance);
428 * Check to see if the monitor panic'd while booting.
430 if (rkt_readl(dev, MUnit.OMRx[0]) & MONITOR_PANIC) {
431 printk(KERN_ERR "%s%d: adapter monitor panic.\n", dev->name, instance);
435 * Check to see if the board panic'd while booting.
437 if (rkt_readl(dev, MUnit.OMRx[0]) & KERNEL_PANIC) {
438 printk(KERN_ERR "%s%d: adapter kernel panic'd.\n", dev->name, instance);
443 * Wait for the adapter to be up and running. Wait up to 3 minutes
445 while (!(rkt_readl(dev, MUnit.OMRx[0]) & KERNEL_UP_AND_RUNNING))
447 if(time_after(jiffies, start+startup_timeout*HZ))
449 status = rkt_readl(dev, MUnit.OMRx[0]);
450 printk(KERN_ERR "%s%d: adapter kernel failed to start, init status = %lx.\n",
451 dev->name, instance, status);
456 if (request_irq(dev->scsi_host_ptr->irq, aac_rkt_intr, IRQF_SHARED|IRQF_DISABLED, "aacraid", (void *)dev)<0)
458 printk(KERN_ERR "%s%d: Interrupt unavailable.\n", name, instance);
462 * Fill in the function dispatch table.
464 dev->a_ops.adapter_interrupt = aac_rkt_interrupt_adapter;
465 dev->a_ops.adapter_disable_int = aac_rkt_disable_interrupt;
466 dev->a_ops.adapter_notify = aac_rkt_notify_adapter;
467 dev->a_ops.adapter_sync_cmd = rkt_sync_cmd;
468 dev->a_ops.adapter_check_health = aac_rkt_check_health;
469 dev->a_ops.adapter_send = aac_rkt_send;
472 * First clear out all interrupts. Then enable the one's that we
475 rkt_writeb(dev, MUnit.OIMR, 0xff);
476 rkt_writel(dev, MUnit.ODR, 0xffffffff);
477 rkt_writeb(dev, MUnit.OIMR, dev->OIMR = 0xfb);
479 if (aac_init_adapter(dev) == NULL)
481 if (dev->new_comm_interface) {
483 * FIB Setup has already been done, but we can minimize the
484 * damage by at least ensuring the OS never issues more
485 * commands than we can handle. The Rocket adapters currently
486 * can only handle 246 commands and 8 AIFs at the same time,
487 * and in fact do notify us accordingly if we negotiate the
488 * FIB size. The problem that causes us to add this check is
489 * to ensure that we do not overdo it with the adapter when a
490 * hard coded FIB override is being utilized. This special
491 * case warrants this half baked, but convenient, check here.
493 if (dev->scsi_host_ptr->can_queue > (246 - AAC_NUM_MGT_FIB)) {
494 dev->init->MaxIoCommands = cpu_to_le32(246);
495 dev->scsi_host_ptr->can_queue = 246 - AAC_NUM_MGT_FIB;
497 rkt_writeb(dev, MUnit.OIMR, dev->OIMR = 0xf7);
500 * Tell the adapter that all is configured, and it can start
503 aac_rkt_start_adapter(dev);
507 rkt_writeb(dev, MUnit.OIMR, dev->OIMR = 0xff);
508 free_irq(dev->scsi_host_ptr->irq, (void *)dev);