blob: 6998bc877dd685726b0c20c1c467ed57d1fe677a [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * Adaptec AAC series RAID controller driver
3 * (c) Copyright 2001 Red Hat Inc. <alan@redhat.com>
4 *
5 * based on the old aacraid driver that is..
6 * Adaptec aacraid device driver for Linux.
7 *
8 * Copyright (c) 2000 Adaptec, Inc. (aacraid@adaptec.com)
9 *
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)
13 * any later version.
14 *
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.
19 *
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.
23 *
24 * Module Name:
25 * rx.c
26 *
27 * Abstract: Hardware miniport for Drawbridge specific hardware functions.
28 *
29 */
30
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>
44
45#include <scsi/scsi_host.h>
46
47#include "aacraid.h"
48
49static irqreturn_t aac_rx_intr(int irq, void *dev_id, struct pt_regs *regs)
50{
51 struct aac_dev *dev = dev_id;
Mark Haverkamp8e0c5eb2005-10-24 10:52:22 -070052
53 dprintk((KERN_DEBUG "aac_rx_intr(%d,%p,%p)\n", irq, dev_id, regs));
54 if (dev->new_comm_interface) {
55 u32 Index = rx_readl(dev, MUnit.OutboundQueue);
56 if (Index == 0xFFFFFFFFL)
57 Index = rx_readl(dev, MUnit.OutboundQueue);
58 if (Index != 0xFFFFFFFFL) {
59 do {
60 if (aac_intr_normal(dev, Index)) {
61 rx_writel(dev, MUnit.OutboundQueue, Index);
62 rx_writel(dev, MUnit.ODR, DoorBellAdapterNormRespReady);
63 }
64 Index = rx_readl(dev, MUnit.OutboundQueue);
65 } while (Index != 0xFFFFFFFFL);
66 return IRQ_HANDLED;
Linus Torvalds1da177e2005-04-16 15:20:36 -070067 }
Mark Haverkamp8e0c5eb2005-10-24 10:52:22 -070068 } else {
69 unsigned long bellbits;
70 u8 intstat;
71 intstat = rx_readb(dev, MUnit.OISR);
72 /*
73 * Read mask and invert because drawbridge is reversed.
74 * This allows us to only service interrupts that have
75 * been enabled.
76 * Check to see if this is our interrupt. If it isn't just return
77 */
78 if (intstat & ~(dev->OIMR))
79 {
80 bellbits = rx_readl(dev, OutboundDoorbellReg);
81 if (bellbits & DoorBellPrintfReady) {
82 aac_printf(dev, rx_readl (dev, IndexRegs.Mailbox[5]));
83 rx_writel(dev, MUnit.ODR,DoorBellPrintfReady);
84 rx_writel(dev, InboundDoorbellReg,DoorBellPrintfDone);
85 }
86 else if (bellbits & DoorBellAdapterNormCmdReady) {
87 rx_writel(dev, MUnit.ODR, DoorBellAdapterNormCmdReady);
88 aac_command_normal(&dev->queues->queue[HostNormCmdQueue]);
89 }
90 else if (bellbits & DoorBellAdapterNormRespReady) {
91 rx_writel(dev, MUnit.ODR,DoorBellAdapterNormRespReady);
92 aac_response_normal(&dev->queues->queue[HostNormRespQueue]);
93 }
94 else if (bellbits & DoorBellAdapterNormCmdNotFull) {
95 rx_writel(dev, MUnit.ODR, DoorBellAdapterNormCmdNotFull);
96 }
97 else if (bellbits & DoorBellAdapterNormRespNotFull) {
98 rx_writel(dev, MUnit.ODR, DoorBellAdapterNormCmdNotFull);
99 rx_writel(dev, MUnit.ODR, DoorBellAdapterNormRespNotFull);
100 }
101 return IRQ_HANDLED;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700102 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700103 }
104 return IRQ_NONE;
105}
106
107/**
Mark Haverkampbd1aac82005-08-03 15:39:01 -0700108 * aac_rx_disable_interrupt - Disable interrupts
109 * @dev: Adapter
110 */
111
112static void aac_rx_disable_interrupt(struct aac_dev *dev)
113{
114 rx_writeb(dev, MUnit.OIMR, dev->OIMR = 0xff);
115}
116
117/**
Linus Torvalds1da177e2005-04-16 15:20:36 -0700118 * rx_sync_cmd - send a command and wait
119 * @dev: Adapter
120 * @command: Command to execute
121 * @p1: first parameter
122 * @ret: adapter status
123 *
124 * This routine will send a synchronous command to the adapter and wait
125 * for its completion.
126 */
127
Mark Haverkamp 7c00ffa2005-05-16 18:28:42 -0700128static int rx_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)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700131{
132 unsigned long start;
133 int ok;
134 /*
135 * Write the command into Mailbox 0
136 */
137 rx_writel(dev, InboundMailbox0, command);
138 /*
Mark Haverkamp 7c00ffa2005-05-16 18:28:42 -0700139 * Write the parameters into Mailboxes 1 - 6
Linus Torvalds1da177e2005-04-16 15:20:36 -0700140 */
141 rx_writel(dev, InboundMailbox1, p1);
Mark Haverkamp 7c00ffa2005-05-16 18:28:42 -0700142 rx_writel(dev, InboundMailbox2, p2);
143 rx_writel(dev, InboundMailbox3, p3);
144 rx_writel(dev, InboundMailbox4, p4);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700145 /*
146 * Clear the synch command doorbell to start on a clean slate.
147 */
148 rx_writel(dev, OutboundDoorbellReg, OUTBOUNDDOORBELL_0);
149 /*
150 * Disable doorbell interrupts
151 */
Mark Haverkamp 7c00ffa2005-05-16 18:28:42 -0700152 rx_writeb(dev, MUnit.OIMR, dev->OIMR = 0xff);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700153 /*
154 * Force the completion of the mask register write before issuing
155 * the interrupt.
156 */
157 rx_readb (dev, MUnit.OIMR);
158 /*
159 * Signal that there is a new synch command
160 */
161 rx_writel(dev, InboundDoorbellReg, INBOUNDDOORBELL_0);
162
163 ok = 0;
164 start = jiffies;
165
166 /*
167 * Wait up to 30 seconds
168 */
169 while (time_before(jiffies, start+30*HZ))
170 {
171 udelay(5); /* Delay 5 microseconds to let Mon960 get info. */
172 /*
173 * Mon960 will set doorbell0 bit when it has completed the command.
174 */
175 if (rx_readl(dev, OutboundDoorbellReg) & OUTBOUNDDOORBELL_0) {
176 /*
177 * Clear the doorbell.
178 */
179 rx_writel(dev, OutboundDoorbellReg, OUTBOUNDDOORBELL_0);
180 ok = 1;
181 break;
182 }
183 /*
184 * Yield the processor in case we are slow
185 */
Nishanth Aravamudana9a30472005-11-07 01:01:20 -0800186 schedule_timeout_uninterruptible(1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700187 }
188 if (ok != 1) {
189 /*
190 * Restore interrupt mask even though we timed out
191 */
Mark Haverkamp8e0c5eb2005-10-24 10:52:22 -0700192 if (dev->new_comm_interface)
193 rx_writeb(dev, MUnit.OIMR, dev->OIMR = 0xf7);
194 else
195 rx_writeb(dev, MUnit.OIMR, dev->OIMR = 0xfb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700196 return -ETIMEDOUT;
197 }
198 /*
199 * Pull the synch status from Mailbox 0.
200 */
201 if (status)
202 *status = rx_readl(dev, IndexRegs.Mailbox[0]);
Mark Haverkamp 7c00ffa2005-05-16 18:28:42 -0700203 if (r1)
204 *r1 = rx_readl(dev, IndexRegs.Mailbox[1]);
205 if (r2)
206 *r2 = rx_readl(dev, IndexRegs.Mailbox[2]);
207 if (r3)
208 *r3 = rx_readl(dev, IndexRegs.Mailbox[3]);
209 if (r4)
210 *r4 = rx_readl(dev, IndexRegs.Mailbox[4]);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700211 /*
212 * Clear the synch command doorbell.
213 */
214 rx_writel(dev, OutboundDoorbellReg, OUTBOUNDDOORBELL_0);
215 /*
216 * Restore interrupt mask
217 */
Mark Haverkamp8e0c5eb2005-10-24 10:52:22 -0700218 if (dev->new_comm_interface)
219 rx_writeb(dev, MUnit.OIMR, dev->OIMR = 0xf7);
220 else
221 rx_writeb(dev, MUnit.OIMR, dev->OIMR = 0xfb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700222 return 0;
223
224}
225
226/**
227 * aac_rx_interrupt_adapter - interrupt adapter
228 * @dev: Adapter
229 *
230 * Send an interrupt to the i960 and breakpoint it.
231 */
232
233static void aac_rx_interrupt_adapter(struct aac_dev *dev)
234{
Mark Haverkamp 7c00ffa2005-05-16 18:28:42 -0700235 rx_sync_cmd(dev, BREAKPOINT_REQUEST, 0, 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700236}
237
238/**
239 * aac_rx_notify_adapter - send an event to the adapter
240 * @dev: Adapter
241 * @event: Event to send
242 *
243 * Notify the i960 that something it probably cares about has
244 * happened.
245 */
246
247static void aac_rx_notify_adapter(struct aac_dev *dev, u32 event)
248{
249 switch (event) {
250
251 case AdapNormCmdQue:
252 rx_writel(dev, MUnit.IDR,INBOUNDDOORBELL_1);
253 break;
254 case HostNormRespNotFull:
255 rx_writel(dev, MUnit.IDR,INBOUNDDOORBELL_4);
256 break;
257 case AdapNormRespQue:
258 rx_writel(dev, MUnit.IDR,INBOUNDDOORBELL_2);
259 break;
260 case HostNormCmdNotFull:
261 rx_writel(dev, MUnit.IDR,INBOUNDDOORBELL_3);
262 break;
263 case HostShutdown:
Mark Haverkamp 7c00ffa2005-05-16 18:28:42 -0700264// rx_sync_cmd(dev, HOST_CRASHING, 0, 0, 0, 0, 0, 0,
265// NULL, NULL, NULL, NULL, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700266 break;
267 case FastIo:
268 rx_writel(dev, MUnit.IDR,INBOUNDDOORBELL_6);
269 break;
270 case AdapPrintfDone:
271 rx_writel(dev, MUnit.IDR,INBOUNDDOORBELL_5);
272 break;
273 default:
274 BUG();
275 break;
276 }
277}
278
279/**
280 * aac_rx_start_adapter - activate adapter
281 * @dev: Adapter
282 *
283 * Start up processing on an i960 based AAC adapter
284 */
285
286static void aac_rx_start_adapter(struct aac_dev *dev)
287{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700288 struct aac_init *init;
289
290 init = dev->init;
291 init->HostElapsedSeconds = cpu_to_le32(get_seconds());
Linus Torvalds1da177e2005-04-16 15:20:36 -0700292 // We can only use a 32 bit address here
Mark Haverkamp 7c00ffa2005-05-16 18:28:42 -0700293 rx_sync_cmd(dev, INIT_STRUCT_BASE_ADDRESS, (u32)(ulong)dev->init_pa,
294 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700295}
296
297/**
298 * aac_rx_check_health
299 * @dev: device to check if healthy
300 *
301 * Will attempt to determine if the specified adapter is alive and
302 * capable of handling requests, returning 0 if alive.
303 */
304static int aac_rx_check_health(struct aac_dev *dev)
305{
306 u32 status = rx_readl(dev, MUnit.OMRx[0]);
307
308 /*
309 * Check to see if the board failed any self tests.
310 */
311 if (status & SELF_TEST_FAILED)
312 return -1;
313 /*
314 * Check to see if the board panic'd.
315 */
316 if (status & KERNEL_PANIC) {
317 char * buffer;
318 struct POSTSTATUS {
Mark Haverkamp 56b58712005-04-27 06:05:51 -0700319 __le32 Post_Command;
320 __le32 Post_Address;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700321 } * post;
322 dma_addr_t paddr, baddr;
323 int ret;
324
325 if ((status & 0xFF000000L) == 0xBC000000L)
326 return (status >> 16) & 0xFF;
327 buffer = pci_alloc_consistent(dev->pdev, 512, &baddr);
328 ret = -2;
329 if (buffer == NULL)
330 return ret;
331 post = pci_alloc_consistent(dev->pdev,
332 sizeof(struct POSTSTATUS), &paddr);
333 if (post == NULL) {
334 pci_free_consistent(dev->pdev, 512, buffer, baddr);
335 return ret;
336 }
337 memset(buffer, 0, 512);
338 post->Post_Command = cpu_to_le32(COMMAND_POST_RESULTS);
339 post->Post_Address = cpu_to_le32(baddr);
340 rx_writel(dev, MUnit.IMRx[0], paddr);
Mark Haverkamp 7c00ffa2005-05-16 18:28:42 -0700341 rx_sync_cmd(dev, COMMAND_POST_RESULTS, baddr, 0, 0, 0, 0, 0,
342 NULL, NULL, NULL, NULL, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700343 pci_free_consistent(dev->pdev, sizeof(struct POSTSTATUS),
344 post, paddr);
345 if ((buffer[0] == '0') && (buffer[1] == 'x')) {
346 ret = (buffer[2] <= '9') ? (buffer[2] - '0') : (buffer[2] - 'A' + 10);
347 ret <<= 4;
348 ret += (buffer[3] <= '9') ? (buffer[3] - '0') : (buffer[3] - 'A' + 10);
349 }
350 pci_free_consistent(dev->pdev, 512, buffer, baddr);
351 return ret;
352 }
353 /*
354 * Wait for the adapter to be up and running.
355 */
356 if (!(status & KERNEL_UP_AND_RUNNING))
357 return -3;
358 /*
359 * Everything is OK
360 */
361 return 0;
362}
363
364/**
Mark Haverkamp8e0c5eb2005-10-24 10:52:22 -0700365 * aac_rx_send
366 * @fib: fib to issue
367 *
368 * Will send a fib, returning 0 if successful.
369 */
370static int aac_rx_send(struct fib * fib)
371{
372 u64 addr = fib->hw_fib_pa;
373 struct aac_dev *dev = fib->dev;
374 volatile void __iomem *device = dev->regs.rx;
375 u32 Index;
376
377 dprintk((KERN_DEBUG "%p->aac_rx_send(%p->%llx)\n", dev, fib, addr));
378 Index = rx_readl(dev, MUnit.InboundQueue);
379 if (Index == 0xFFFFFFFFL)
380 Index = rx_readl(dev, MUnit.InboundQueue);
381 dprintk((KERN_DEBUG "Index = 0x%x\n", Index));
382 if (Index == 0xFFFFFFFFL)
383 return Index;
384 device += Index;
385 dprintk((KERN_DEBUG "entry = %x %x %u\n", (u32)(addr & 0xffffffff),
386 (u32)(addr >> 32), (u32)le16_to_cpu(fib->hw_fib->header.Size)));
387 writel((u32)(addr & 0xffffffff), device);
388 device += sizeof(u32);
389 writel((u32)(addr >> 32), device);
390 device += sizeof(u32);
391 writel(le16_to_cpu(fib->hw_fib->header.Size), device);
392 rx_writel(dev, MUnit.InboundQueue, Index);
393 dprintk((KERN_DEBUG "aac_rx_send - return 0\n"));
394 return 0;
395}
396
397/**
Linus Torvalds1da177e2005-04-16 15:20:36 -0700398 * aac_rx_init - initialize an i960 based AAC card
399 * @dev: device to configure
400 *
401 * Allocate and set up resources for the i960 based AAC variants. The
402 * device_interface in the commregion will be allocated and linked
403 * to the comm region.
404 */
405
406int aac_rx_init(struct aac_dev *dev)
407{
408 unsigned long start;
409 unsigned long status;
410 int instance;
411 const char * name;
412
413 instance = dev->id;
414 name = dev->name;
415
416 /*
Mark Haverkamp8e0c5eb2005-10-24 10:52:22 -0700417 * Check to see if the board panic'd while booting.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700418 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700419 /*
420 * Check to see if the board failed any self tests.
421 */
422 if (rx_readl(dev, MUnit.OMRx[0]) & SELF_TEST_FAILED) {
423 printk(KERN_ERR "%s%d: adapter self-test failed.\n", dev->name, instance);
424 goto error_iounmap;
425 }
426 /*
427 * Check to see if the board panic'd while booting.
428 */
429 if (rx_readl(dev, MUnit.OMRx[0]) & KERNEL_PANIC) {
430 printk(KERN_ERR "%s%d: adapter kernel panic.\n", dev->name, instance);
431 goto error_iounmap;
432 }
433 /*
434 * Check to see if the monitor panic'd while booting.
435 */
436 if (rx_readl(dev, MUnit.OMRx[0]) & MONITOR_PANIC) {
437 printk(KERN_ERR "%s%d: adapter monitor panic.\n", dev->name, instance);
438 goto error_iounmap;
439 }
440 start = jiffies;
441 /*
442 * Wait for the adapter to be up and running. Wait up to 3 minutes
443 */
444 while ((!(rx_readl(dev, IndexRegs.Mailbox[7]) & KERNEL_UP_AND_RUNNING))
445 || (!(rx_readl(dev, MUnit.OMRx[0]) & KERNEL_UP_AND_RUNNING)))
446 {
447 if(time_after(jiffies, start+180*HZ))
448 {
449 status = rx_readl(dev, IndexRegs.Mailbox[7]);
450 printk(KERN_ERR "%s%d: adapter kernel failed to start, init status = %lx.\n",
451 dev->name, instance, status);
452 goto error_iounmap;
453 }
Nishanth Aravamudana9a30472005-11-07 01:01:20 -0800454 schedule_timeout_uninterruptible(1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700455 }
456 if (request_irq(dev->scsi_host_ptr->irq, aac_rx_intr, SA_SHIRQ|SA_INTERRUPT, "aacraid", (void *)dev)<0)
457 {
458 printk(KERN_ERR "%s%d: Interrupt unavailable.\n", name, instance);
459 goto error_iounmap;
460 }
461 /*
462 * Fill in the function dispatch table.
463 */
464 dev->a_ops.adapter_interrupt = aac_rx_interrupt_adapter;
Mark Haverkampbd1aac82005-08-03 15:39:01 -0700465 dev->a_ops.adapter_disable_int = aac_rx_disable_interrupt;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700466 dev->a_ops.adapter_notify = aac_rx_notify_adapter;
467 dev->a_ops.adapter_sync_cmd = rx_sync_cmd;
468 dev->a_ops.adapter_check_health = aac_rx_check_health;
Mark Haverkamp8e0c5eb2005-10-24 10:52:22 -0700469 dev->a_ops.adapter_send = aac_rx_send;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700470
Mark Haverkampbd1aac82005-08-03 15:39:01 -0700471 /*
472 * First clear out all interrupts. Then enable the one's that we
473 * can handle.
474 */
475 rx_writeb(dev, MUnit.OIMR, 0xff);
476 rx_writel(dev, MUnit.ODR, 0xffffffff);
477 rx_writeb(dev, MUnit.OIMR, dev->OIMR = 0xfb);
478
Linus Torvalds1da177e2005-04-16 15:20:36 -0700479 if (aac_init_adapter(dev) == NULL)
480 goto error_irq;
Mark Haverkamp8e0c5eb2005-10-24 10:52:22 -0700481 if (dev->new_comm_interface)
482 rx_writeb(dev, MUnit.OIMR, dev->OIMR = 0xf7);
483
Linus Torvalds1da177e2005-04-16 15:20:36 -0700484 /*
485 * Tell the adapter that all is configured, and it can start
486 * accepting requests
487 */
488 aac_rx_start_adapter(dev);
489 return 0;
490
Linus Torvalds1da177e2005-04-16 15:20:36 -0700491error_irq:
Mark Haverkampbd1aac82005-08-03 15:39:01 -0700492 rx_writeb(dev, MUnit.OIMR, dev->OIMR = 0xff);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700493 free_irq(dev->scsi_host_ptr->irq, (void *)dev);
494
495error_iounmap:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700496
497 return -1;
498}