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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * Adaptec AAC series RAID controller driver | |
fa195afe | 3 | * (c) Copyright 2001 Red Hat Inc. |
1da177e4 LT |
4 | * |
5 | * based on the old aacraid driver that is.. | |
6 | * Adaptec aacraid device driver for Linux. | |
7 | * | |
e8b12f0f | 8 | * Copyright (c) 2000-2010 Adaptec, Inc. |
f4babba0 RAR |
9 | * 2010-2015 PMC-Sierra, Inc. (aacraid@pmc-sierra.com) |
10 | * 2016-2017 Microsemi Corp. (aacraid@microsemi.com) | |
1da177e4 LT |
11 | * |
12 | * This program is free software; you can redistribute it and/or modify | |
13 | * it under the terms of the GNU General Public License as published by | |
14 | * the Free Software Foundation; either version 2, or (at your option) | |
15 | * any later version. | |
16 | * | |
17 | * This program is distributed in the hope that it will be useful, | |
18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | * GNU General Public License for more details. | |
21 | * | |
22 | * You should have received a copy of the GNU General Public License | |
23 | * along with this program; see the file COPYING. If not, write to | |
24 | * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. | |
25 | * | |
26 | * Module Name: | |
27 | * sa.c | |
28 | * | |
29 | * Abstract: Drawbridge specific support functions | |
30 | * | |
31 | */ | |
32 | ||
33 | #include <linux/kernel.h> | |
34 | #include <linux/init.h> | |
35 | #include <linux/types.h> | |
8ef22247 | 36 | #include <linux/pci.h> |
1da177e4 | 37 | #include <linux/spinlock.h> |
1da177e4 LT |
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> | |
1da177e4 LT |
43 | |
44 | #include <scsi/scsi_host.h> | |
45 | ||
46 | #include "aacraid.h" | |
47 | ||
7d12e780 | 48 | static irqreturn_t aac_sa_intr(int irq, void *dev_id) |
1da177e4 LT |
49 | { |
50 | struct aac_dev *dev = dev_id; | |
51 | unsigned short intstat, mask; | |
52 | ||
53 | intstat = sa_readw(dev, DoorbellReg_p); | |
54 | /* | |
55 | * Read mask and invert because drawbridge is reversed. | |
56 | * This allows us to only service interrupts that have been enabled. | |
57 | */ | |
58 | mask = ~(sa_readw(dev, SaDbCSR.PRISETIRQMASK)); | |
59 | ||
60 | /* Check to see if this is our interrupt. If it isn't just return */ | |
61 | ||
62 | if (intstat & mask) { | |
63 | if (intstat & PrintfReady) { | |
64 | aac_printf(dev, sa_readl(dev, Mailbox5)); | |
65 | sa_writew(dev, DoorbellClrReg_p, PrintfReady); /* clear PrintfReady */ | |
66 | sa_writew(dev, DoorbellReg_s, PrintfDone); | |
67 | } else if (intstat & DOORBELL_1) { // dev -> Host Normal Command Ready | |
1da177e4 | 68 | sa_writew(dev, DoorbellClrReg_p, DOORBELL_1); |
df3b7668 | 69 | aac_command_normal(&dev->queues->queue[HostNormCmdQueue]); |
1da177e4 | 70 | } else if (intstat & DOORBELL_2) { // dev -> Host Normal Response Ready |
1da177e4 | 71 | sa_writew(dev, DoorbellClrReg_p, DOORBELL_2); |
df3b7668 | 72 | aac_response_normal(&dev->queues->queue[HostNormRespQueue]); |
1da177e4 LT |
73 | } else if (intstat & DOORBELL_3) { // dev -> Host Normal Command Not Full |
74 | sa_writew(dev, DoorbellClrReg_p, DOORBELL_3); | |
75 | } else if (intstat & DOORBELL_4) { // dev -> Host Normal Response Not Full | |
76 | sa_writew(dev, DoorbellClrReg_p, DOORBELL_4); | |
77 | } | |
78 | return IRQ_HANDLED; | |
79 | } | |
80 | return IRQ_NONE; | |
81 | } | |
82 | ||
bd1aac80 MH |
83 | /** |
84 | * aac_sa_disable_interrupt - disable interrupt | |
85 | * @dev: Which adapter to enable. | |
86 | */ | |
87 | ||
88 | static void aac_sa_disable_interrupt (struct aac_dev *dev) | |
89 | { | |
90 | sa_writew(dev, SaDbCSR.PRISETIRQMASK, 0xffff); | |
91 | } | |
92 | ||
28713324 MH |
93 | /** |
94 | * aac_sa_enable_interrupt - enable interrupt | |
95 | * @dev: Which adapter to enable. | |
96 | */ | |
97 | ||
98 | static void aac_sa_enable_interrupt (struct aac_dev *dev) | |
99 | { | |
100 | sa_writew(dev, SaDbCSR.PRICLEARIRQMASK, (PrintfReady | DOORBELL_1 | | |
101 | DOORBELL_2 | DOORBELL_3 | DOORBELL_4)); | |
102 | } | |
103 | ||
1da177e4 LT |
104 | /** |
105 | * aac_sa_notify_adapter - handle adapter notification | |
106 | * @dev: Adapter that notification is for | |
107 | * @event: Event to notidy | |
108 | * | |
109 | * Notify the adapter of an event | |
110 | */ | |
111 | ||
4833869e | 112 | static void aac_sa_notify_adapter(struct aac_dev *dev, u32 event) |
1da177e4 LT |
113 | { |
114 | switch (event) { | |
115 | ||
116 | case AdapNormCmdQue: | |
117 | sa_writew(dev, DoorbellReg_s,DOORBELL_1); | |
118 | break; | |
119 | case HostNormRespNotFull: | |
120 | sa_writew(dev, DoorbellReg_s,DOORBELL_4); | |
121 | break; | |
122 | case AdapNormRespQue: | |
123 | sa_writew(dev, DoorbellReg_s,DOORBELL_2); | |
124 | break; | |
125 | case HostNormCmdNotFull: | |
126 | sa_writew(dev, DoorbellReg_s,DOORBELL_3); | |
127 | break; | |
128 | case HostShutdown: | |
7c00ffa3 MH |
129 | /* |
130 | sa_sync_cmd(dev, HOST_CRASHING, 0, 0, 0, 0, 0, 0, | |
131 | NULL, NULL, NULL, NULL, NULL); | |
132 | */ | |
1da177e4 LT |
133 | break; |
134 | case FastIo: | |
135 | sa_writew(dev, DoorbellReg_s,DOORBELL_6); | |
136 | break; | |
137 | case AdapPrintfDone: | |
138 | sa_writew(dev, DoorbellReg_s,DOORBELL_5); | |
139 | break; | |
140 | default: | |
141 | BUG(); | |
142 | break; | |
143 | } | |
144 | } | |
145 | ||
146 | ||
147 | /** | |
148 | * sa_sync_cmd - send a command and wait | |
149 | * @dev: Adapter | |
150 | * @command: Command to execute | |
151 | * @p1: first parameter | |
152 | * @ret: adapter status | |
153 | * | |
154 | * This routine will send a synchronous command to the adapter and wait | |
155 | * for its completion. | |
156 | */ | |
157 | ||
7c00ffa3 MH |
158 | static int sa_sync_cmd(struct aac_dev *dev, u32 command, |
159 | u32 p1, u32 p2, u32 p3, u32 p4, u32 p5, u32 p6, | |
160 | u32 *ret, u32 *r1, u32 *r2, u32 *r3, u32 *r4) | |
1da177e4 LT |
161 | { |
162 | unsigned long start; | |
163 | int ok; | |
164 | /* | |
165 | * Write the Command into Mailbox 0 | |
166 | */ | |
167 | sa_writel(dev, Mailbox0, command); | |
168 | /* | |
169 | * Write the parameters into Mailboxes 1 - 4 | |
170 | */ | |
171 | sa_writel(dev, Mailbox1, p1); | |
7c00ffa3 MH |
172 | sa_writel(dev, Mailbox2, p2); |
173 | sa_writel(dev, Mailbox3, p3); | |
174 | sa_writel(dev, Mailbox4, p4); | |
175 | ||
1da177e4 LT |
176 | /* |
177 | * Clear the synch command doorbell to start on a clean slate. | |
178 | */ | |
179 | sa_writew(dev, DoorbellClrReg_p, DOORBELL_0); | |
180 | /* | |
181 | * Signal that there is a new synch command | |
182 | */ | |
183 | sa_writew(dev, DoorbellReg_s, DOORBELL_0); | |
184 | ||
185 | ok = 0; | |
186 | start = jiffies; | |
187 | ||
188 | while(time_before(jiffies, start+30*HZ)) | |
189 | { | |
190 | /* | |
191 | * Delay 5uS so that the monitor gets access | |
192 | */ | |
193 | udelay(5); | |
194 | /* | |
195 | * Mon110 will set doorbell0 bit when it has | |
196 | * completed the command. | |
197 | */ | |
198 | if(sa_readw(dev, DoorbellReg_p) & DOORBELL_0) { | |
199 | ok = 1; | |
200 | break; | |
201 | } | |
1241f359 | 202 | msleep(1); |
1da177e4 LT |
203 | } |
204 | ||
205 | if (ok != 1) | |
206 | return -ETIMEDOUT; | |
207 | /* | |
208 | * Clear the synch command doorbell. | |
209 | */ | |
210 | sa_writew(dev, DoorbellClrReg_p, DOORBELL_0); | |
211 | /* | |
212 | * Pull the synch status from Mailbox 0. | |
213 | */ | |
214 | if (ret) | |
215 | *ret = sa_readl(dev, Mailbox0); | |
7c00ffa3 MH |
216 | if (r1) |
217 | *r1 = sa_readl(dev, Mailbox1); | |
218 | if (r2) | |
219 | *r2 = sa_readl(dev, Mailbox2); | |
220 | if (r3) | |
221 | *r3 = sa_readl(dev, Mailbox3); | |
222 | if (r4) | |
223 | *r4 = sa_readl(dev, Mailbox4); | |
1da177e4 LT |
224 | return 0; |
225 | } | |
226 | ||
227 | /** | |
228 | * aac_sa_interrupt_adapter - interrupt an adapter | |
229 | * @dev: Which adapter to enable. | |
230 | * | |
231 | * Breakpoint an adapter. | |
232 | */ | |
233 | ||
234 | static void aac_sa_interrupt_adapter (struct aac_dev *dev) | |
235 | { | |
7c00ffa3 | 236 | sa_sync_cmd(dev, BREAKPOINT_REQUEST, 0, 0, 0, 0, 0, 0, |
bd1aac80 | 237 | NULL, NULL, NULL, NULL, NULL); |
1da177e4 LT |
238 | } |
239 | ||
240 | /** | |
241 | * aac_sa_start_adapter - activate adapter | |
242 | * @dev: Adapter | |
243 | * | |
244 | * Start up processing on an ARM based AAC adapter | |
245 | */ | |
246 | ||
247 | static void aac_sa_start_adapter(struct aac_dev *dev) | |
248 | { | |
d1ef4da8 | 249 | union aac_init *init; |
1da177e4 LT |
250 | /* |
251 | * Fill in the remaining pieces of the init. | |
252 | */ | |
253 | init = dev->init; | |
d1ef4da8 | 254 | init->r7.host_elapsed_seconds = cpu_to_le32(get_seconds()); |
1da177e4 | 255 | /* We can only use a 32 bit address here */ |
7c00ffa3 MH |
256 | sa_sync_cmd(dev, INIT_STRUCT_BASE_ADDRESS, |
257 | (u32)(ulong)dev->init_pa, 0, 0, 0, 0, 0, | |
8e0c5ebd | 258 | NULL, NULL, NULL, NULL, NULL); |
1da177e4 LT |
259 | } |
260 | ||
31364329 | 261 | static int aac_sa_restart_adapter(struct aac_dev *dev, int bled, u8 reset_type) |
2ab01efd SM |
262 | { |
263 | return -EINVAL; | |
264 | } | |
265 | ||
1da177e4 LT |
266 | /** |
267 | * aac_sa_check_health | |
268 | * @dev: device to check if healthy | |
269 | * | |
270 | * Will attempt to determine if the specified adapter is alive and | |
271 | * capable of handling requests, returning 0 if alive. | |
272 | */ | |
273 | static int aac_sa_check_health(struct aac_dev *dev) | |
274 | { | |
275 | long status = sa_readl(dev, Mailbox7); | |
276 | ||
277 | /* | |
278 | * Check to see if the board failed any self tests. | |
279 | */ | |
280 | if (status & SELF_TEST_FAILED) | |
281 | return -1; | |
282 | /* | |
283 | * Check to see if the board panic'd while booting. | |
284 | */ | |
285 | if (status & KERNEL_PANIC) | |
286 | return -2; | |
287 | /* | |
288 | * Wait for the adapter to be up and running. Wait up to 3 minutes | |
289 | */ | |
290 | if (!(status & KERNEL_UP_AND_RUNNING)) | |
291 | return -3; | |
292 | /* | |
293 | * Everything is OK | |
294 | */ | |
295 | return 0; | |
296 | } | |
297 | ||
76a7f8fd MH |
298 | /** |
299 | * aac_sa_ioremap | |
300 | * @size: mapping resize request | |
301 | * | |
302 | */ | |
303 | static int aac_sa_ioremap(struct aac_dev * dev, u32 size) | |
304 | { | |
305 | if (!size) { | |
306 | iounmap(dev->regs.sa); | |
307 | return 0; | |
308 | } | |
ff08784b | 309 | dev->base = dev->regs.sa = ioremap(dev->base_start, size); |
76a7f8fd MH |
310 | return (dev->base == NULL) ? -1 : 0; |
311 | } | |
312 | ||
1da177e4 LT |
313 | /** |
314 | * aac_sa_init - initialize an ARM based AAC card | |
315 | * @dev: device to configure | |
316 | * | |
317 | * Allocate and set up resources for the ARM based AAC variants. The | |
318 | * device_interface in the commregion will be allocated and linked | |
319 | * to the comm region. | |
320 | */ | |
321 | ||
322 | int aac_sa_init(struct aac_dev *dev) | |
323 | { | |
324 | unsigned long start; | |
325 | unsigned long status; | |
326 | int instance; | |
327 | const char *name; | |
328 | ||
329 | instance = dev->id; | |
330 | name = dev->name; | |
331 | ||
76a7f8fd MH |
332 | if (aac_sa_ioremap(dev, dev->base_size)) { |
333 | printk(KERN_WARNING "%s: unable to map adapter.\n", name); | |
334 | goto error_iounmap; | |
335 | } | |
336 | ||
1da177e4 LT |
337 | /* |
338 | * Check to see if the board failed any self tests. | |
339 | */ | |
340 | if (sa_readl(dev, Mailbox7) & SELF_TEST_FAILED) { | |
341 | printk(KERN_WARNING "%s%d: adapter self-test failed.\n", name, instance); | |
342 | goto error_iounmap; | |
343 | } | |
344 | /* | |
345 | * Check to see if the board panic'd while booting. | |
346 | */ | |
347 | if (sa_readl(dev, Mailbox7) & KERNEL_PANIC) { | |
348 | printk(KERN_WARNING "%s%d: adapter kernel panic'd.\n", name, instance); | |
349 | goto error_iounmap; | |
350 | } | |
351 | start = jiffies; | |
352 | /* | |
353 | * Wait for the adapter to be up and running. Wait up to 3 minutes. | |
354 | */ | |
355 | while (!(sa_readl(dev, Mailbox7) & KERNEL_UP_AND_RUNNING)) { | |
404d9a90 | 356 | if (time_after(jiffies, start+startup_timeout*HZ)) { |
1da177e4 LT |
357 | status = sa_readl(dev, Mailbox7); |
358 | printk(KERN_WARNING "%s%d: adapter kernel failed to start, init status = %lx.\n", | |
359 | name, instance, status); | |
360 | goto error_iounmap; | |
361 | } | |
404d9a90 | 362 | msleep(1); |
1da177e4 LT |
363 | } |
364 | ||
1da177e4 LT |
365 | /* |
366 | * Fill in the function dispatch table. | |
367 | */ | |
368 | ||
369 | dev->a_ops.adapter_interrupt = aac_sa_interrupt_adapter; | |
bd1aac80 | 370 | dev->a_ops.adapter_disable_int = aac_sa_disable_interrupt; |
28713324 | 371 | dev->a_ops.adapter_enable_int = aac_sa_enable_interrupt; |
1da177e4 LT |
372 | dev->a_ops.adapter_notify = aac_sa_notify_adapter; |
373 | dev->a_ops.adapter_sync_cmd = sa_sync_cmd; | |
374 | dev->a_ops.adapter_check_health = aac_sa_check_health; | |
2ab01efd | 375 | dev->a_ops.adapter_restart = aac_sa_restart_adapter; |
de665f28 | 376 | dev->a_ops.adapter_start = aac_sa_start_adapter; |
28713324 | 377 | dev->a_ops.adapter_intr = aac_sa_intr; |
2ab01efd | 378 | dev->a_ops.adapter_deliver = aac_rx_deliver_producer; |
76a7f8fd | 379 | dev->a_ops.adapter_ioremap = aac_sa_ioremap; |
1da177e4 | 380 | |
bd1aac80 MH |
381 | /* |
382 | * First clear out all interrupts. Then enable the one's that | |
383 | * we can handle. | |
384 | */ | |
28713324 MH |
385 | aac_adapter_disable_int(dev); |
386 | aac_adapter_enable_int(dev); | |
1da177e4 LT |
387 | |
388 | if(aac_init_adapter(dev) == NULL) | |
389 | goto error_irq; | |
11604612 | 390 | dev->sync_mode = 0; /* sync. mode not supported */ |
8ef22247 | 391 | if (request_irq(dev->pdev->irq, dev->a_ops.adapter_intr, |
4909cc2b | 392 | IRQF_SHARED, "aacraid", (void *)dev) < 0) { |
28713324 MH |
393 | printk(KERN_WARNING "%s%d: Interrupt unavailable.\n", |
394 | name, instance); | |
395 | goto error_iounmap; | |
396 | } | |
ff08784b | 397 | dev->dbg_base = dev->base_start; |
e8b12f0f MR |
398 | dev->dbg_base_mapped = dev->base; |
399 | dev->dbg_size = dev->base_size; | |
400 | ||
28713324 | 401 | aac_adapter_enable_int(dev); |
1da177e4 | 402 | |
1da177e4 LT |
403 | /* |
404 | * Tell the adapter that all is configure, and it can start | |
405 | * accepting requests | |
406 | */ | |
407 | aac_sa_start_adapter(dev); | |
408 | return 0; | |
409 | ||
1da177e4 | 410 | error_irq: |
28713324 | 411 | aac_sa_disable_interrupt(dev); |
8ef22247 | 412 | free_irq(dev->pdev->irq, (void *)dev); |
1da177e4 LT |
413 | |
414 | error_iounmap: | |
1da177e4 LT |
415 | |
416 | return -1; | |
417 | } | |
418 |