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path: root/drivers/scsi/aacraid/rkt.c
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Diffstat (limited to 'drivers/scsi/aacraid/rkt.c')
-rw-r--r--drivers/scsi/aacraid/rkt.c461
1 files changed, 17 insertions, 444 deletions
diff --git a/drivers/scsi/aacraid/rkt.c b/drivers/scsi/aacraid/rkt.c
index f850c3a7cce9..643f23b5ded8 100644
--- a/drivers/scsi/aacraid/rkt.c
+++ b/drivers/scsi/aacraid/rkt.c
@@ -28,389 +28,27 @@
28 * 28 *
29 */ 29 */
30 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> 31#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 32
45#include <scsi/scsi_host.h> 33#include <scsi/scsi_host.h>
46 34
47#include "aacraid.h" 35#include "aacraid.h"
48 36
49static irqreturn_t aac_rkt_intr(int irq, void *dev_id, struct pt_regs *regs)
50{
51 struct aac_dev *dev = dev_id;
52
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) {
58 do {
59 if (aac_intr_normal(dev, Index)) {
60 rkt_writel(dev, MUnit.OutboundQueue, Index);
61 rkt_writel(dev, MUnit.ODR, DoorBellAdapterNormRespReady);
62 }
63 Index = rkt_readl(dev, MUnit.OutboundQueue);
64 } while (Index != 0xFFFFFFFFL);
65 return IRQ_HANDLED;
66 }
67 } else {
68 unsigned long bellbits;
69 u8 intstat;
70 intstat = rkt_readb(dev, MUnit.OISR);
71 /*
72 * Read mask and invert because drawbridge is reversed.
73 * This allows us to only service interrupts that have
74 * been enabled.
75 * Check to see if this is our interrupt. If it isn't just return
76 */
77 if (intstat & ~(dev->OIMR))
78 {
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);
84 }
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);
89 }
90 else if (bellbits & DoorBellAdapterNormRespReady) {
91 rkt_writel(dev, MUnit.ODR,DoorBellAdapterNormRespReady);
92 aac_response_normal(&dev->queues->queue[HostNormRespQueue]);
93 }
94 else if (bellbits & DoorBellAdapterNormCmdNotFull) {
95 rkt_writel(dev, MUnit.ODR, DoorBellAdapterNormCmdNotFull);
96 }
97 else if (bellbits & DoorBellAdapterNormRespNotFull) {
98 rkt_writel(dev, MUnit.ODR, DoorBellAdapterNormCmdNotFull);
99 rkt_writel(dev, MUnit.ODR, DoorBellAdapterNormRespNotFull);
100 }
101 return IRQ_HANDLED;
102 }
103 }
104 return IRQ_NONE;
105}
106
107/**
108 * aac_rkt_disable_interrupt - Disable interrupts
109 * @dev: Adapter
110 */
111
112static void aac_rkt_disable_interrupt(struct aac_dev *dev)
113{
114 rkt_writeb(dev, MUnit.OIMR, dev->OIMR = 0xff);
115}
116
117/**
118 * rkt_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
128static 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)
131{
132 unsigned long start;
133 int ok;
134 /*
135 * Write the command into Mailbox 0
136 */
137 rkt_writel(dev, InboundMailbox0, command);
138 /*
139 * Write the parameters into Mailboxes 1 - 6
140 */
141 rkt_writel(dev, InboundMailbox1, p1);
142 rkt_writel(dev, InboundMailbox2, p2);
143 rkt_writel(dev, InboundMailbox3, p3);
144 rkt_writel(dev, InboundMailbox4, p4);
145 /*
146 * Clear the synch command doorbell to start on a clean slate.
147 */
148 rkt_writel(dev, OutboundDoorbellReg, OUTBOUNDDOORBELL_0);
149 /*
150 * Disable doorbell interrupts
151 */
152 rkt_writeb(dev, MUnit.OIMR, dev->OIMR = 0xff);
153 /*
154 * Force the completion of the mask register write before issuing
155 * the interrupt.
156 */
157 rkt_readb (dev, MUnit.OIMR);
158 /*
159 * Signal that there is a new synch command
160 */
161 rkt_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 (rkt_readl(dev, OutboundDoorbellReg) & OUTBOUNDDOORBELL_0) {
176 /*
177 * Clear the doorbell.
178 */
179 rkt_writel(dev, OutboundDoorbellReg, OUTBOUNDDOORBELL_0);
180 ok = 1;
181 break;
182 }
183 /*
184 * Yield the processor in case we are slow
185 */
186 msleep(1);
187 }
188 if (ok != 1) {
189 /*
190 * Restore interrupt mask even though we timed out
191 */
192 if (dev->new_comm_interface)
193 rkt_writeb(dev, MUnit.OIMR, dev->OIMR = 0xf7);
194 else
195 rkt_writeb(dev, MUnit.OIMR, dev->OIMR = 0xfb);
196 return -ETIMEDOUT;
197 }
198 /*
199 * Pull the synch status from Mailbox 0.
200 */
201 if (status)
202 *status = rkt_readl(dev, IndexRegs.Mailbox[0]);
203 if (r1)
204 *r1 = rkt_readl(dev, IndexRegs.Mailbox[1]);
205 if (r2)
206 *r2 = rkt_readl(dev, IndexRegs.Mailbox[2]);
207 if (r3)
208 *r3 = rkt_readl(dev, IndexRegs.Mailbox[3]);
209 if (r4)
210 *r4 = rkt_readl(dev, IndexRegs.Mailbox[4]);
211 /*
212 * Clear the synch command doorbell.
213 */
214 rkt_writel(dev, OutboundDoorbellReg, OUTBOUNDDOORBELL_0);
215 /*
216 * Restore interrupt mask
217 */
218 if (dev->new_comm_interface)
219 rkt_writeb(dev, MUnit.OIMR, dev->OIMR = 0xf7);
220 else
221 rkt_writeb(dev, MUnit.OIMR, dev->OIMR = 0xfb);
222 return 0;
223
224}
225
226/**
227 * aac_rkt_interrupt_adapter - interrupt adapter
228 * @dev: Adapter
229 *
230 * Send an interrupt to the i960 and breakpoint it.
231 */
232
233static void aac_rkt_interrupt_adapter(struct aac_dev *dev)
234{
235 rkt_sync_cmd(dev, BREAKPOINT_REQUEST, 0, 0, 0, 0, 0, 0,
236 NULL, NULL, NULL, NULL, NULL);
237}
238
239/** 37/**
240 * aac_rkt_notify_adapter - send an event to the adapter 38 * aac_rkt_ioremap
241 * @dev: Adapter 39 * @size: mapping resize request
242 * @event: Event to send
243 * 40 *
244 * Notify the i960 that something it probably cares about has
245 * happened.
246 */ 41 */
247 42static int aac_rkt_ioremap(struct aac_dev * dev, u32 size)
248static void aac_rkt_notify_adapter(struct aac_dev *dev, u32 event)
249{ 43{
250 switch (event) { 44 if (!size) {
251 45 iounmap(dev->regs.rkt);
252 case AdapNormCmdQue: 46 return 0;
253 rkt_writel(dev, MUnit.IDR,INBOUNDDOORBELL_1);
254 break;
255 case HostNormRespNotFull:
256 rkt_writel(dev, MUnit.IDR,INBOUNDDOORBELL_4);
257 break;
258 case AdapNormRespQue:
259 rkt_writel(dev, MUnit.IDR,INBOUNDDOORBELL_2);
260 break;
261 case HostNormCmdNotFull:
262 rkt_writel(dev, MUnit.IDR,INBOUNDDOORBELL_3);
263 break;
264 case HostShutdown:
265// rkt_sync_cmd(dev, HOST_CRASHING, 0, 0, 0, 0, 0, 0,
266// NULL, NULL, NULL, NULL, NULL);
267 break;
268 case FastIo:
269 rkt_writel(dev, MUnit.IDR,INBOUNDDOORBELL_6);
270 break;
271 case AdapPrintfDone:
272 rkt_writel(dev, MUnit.IDR,INBOUNDDOORBELL_5);
273 break;
274 default:
275 BUG();
276 break;
277 } 47 }
278} 48 dev->base = dev->regs.rkt = ioremap(dev->scsi_host_ptr->base, size);
279 49 if (dev->base == NULL)
280/**
281 * aac_rkt_start_adapter - activate adapter
282 * @dev: Adapter
283 *
284 * Start up processing on an i960 based AAC adapter
285 */
286
287static void aac_rkt_start_adapter(struct aac_dev *dev)
288{
289 struct aac_init *init;
290
291 init = dev->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);
296}
297
298/**
299 * aac_rkt_check_health
300 * @dev: device to check if healthy
301 *
302 * Will attempt to determine if the specified adapter is alive and
303 * capable of handling requests, returning 0 if alive.
304 */
305static int aac_rkt_check_health(struct aac_dev *dev)
306{
307 u32 status = rkt_readl(dev, MUnit.OMRx[0]);
308
309 /*
310 * Check to see if the board failed any self tests.
311 */
312 if (status & SELF_TEST_FAILED)
313 return -1; 50 return -1;
314 /* 51 dev->IndexRegs = &dev->regs.rkt->IndexRegs;
315 * Check to see if the board panic'd.
316 */
317 if (status & KERNEL_PANIC) {
318 char * buffer;
319 struct POSTSTATUS {
320 __le32 Post_Command;
321 __le32 Post_Address;
322 } * post;
323 dma_addr_t paddr, baddr;
324 int ret;
325
326 if ((status & 0xFF000000L) == 0xBC000000L)
327 return (status >> 16) & 0xFF;
328 buffer = pci_alloc_consistent(dev->pdev, 512, &baddr);
329 ret = -2;
330 if (buffer == NULL)
331 return ret;
332 post = pci_alloc_consistent(dev->pdev,
333 sizeof(struct POSTSTATUS), &paddr);
334 if (post == NULL) {
335 pci_free_consistent(dev->pdev, 512, buffer, baddr);
336 return ret;
337 }
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),
345 post, paddr);
346 if ((buffer[0] == '0') && ((buffer[1] == 'x') || (buffer[1] == 'X'))) {
347 ret = (buffer[2] <= '9') ? (buffer[2] - '0') : (buffer[2] - 'A' + 10);
348 ret <<= 4;
349 ret += (buffer[3] <= '9') ? (buffer[3] - '0') : (buffer[3] - 'A' + 10);
350 }
351 pci_free_consistent(dev->pdev, 512, buffer, baddr);
352 return ret;
353 }
354 /*
355 * Wait for the adapter to be up and running.
356 */
357 if (!(status & KERNEL_UP_AND_RUNNING))
358 return -3;
359 /*
360 * Everything is OK
361 */
362 return 0;
363}
364
365/**
366 * aac_rkt_send
367 * @fib: fib to issue
368 *
369 * Will send a fib, returning 0 if successful.
370 */
371static int aac_rkt_send(struct fib * fib)
372{
373 u64 addr = fib->hw_fib_pa;
374 struct aac_dev *dev = fib->dev;
375 volatile void __iomem *device = dev->regs.rkt;
376 u32 Index;
377
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)
384 return Index;
385 device += Index;
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"));
395 return 0;
396}
397
398static int aac_rkt_restart_adapter(struct aac_dev *dev)
399{
400 u32 var;
401
402 printk(KERN_ERR "%s%d: adapter kernel panic'd.\n",
403 dev->name, dev->id);
404
405 if (aac_rkt_check_health(dev) <= 0)
406 return 1;
407 if (rkt_sync_cmd(dev, IOP_RESET, 0, 0, 0, 0, 0, 0,
408 &var, NULL, NULL, NULL, NULL))
409 return 1;
410 if (var != 0x00000001)
411 return 1;
412 if (rkt_readl(dev, MUnit.OMRx[0]) & KERNEL_PANIC)
413 return 1;
414 return 0; 52 return 0;
415} 53}
416 54
@@ -425,74 +63,18 @@ static int aac_rkt_restart_adapter(struct aac_dev *dev)
425 63
426int aac_rkt_init(struct aac_dev *dev) 64int aac_rkt_init(struct aac_dev *dev)
427{ 65{
428 unsigned long start; 66 int retval;
429 unsigned long status; 67 extern int _aac_rx_init(struct aac_dev *dev);
430 int instance; 68 extern void aac_rx_start_adapter(struct aac_dev *dev);
431 const char * name;
432
433 instance = dev->id;
434 name = dev->name;
435 69
436 /* 70 /*
437 * Check to see if the board panic'd while booting.
438 */
439 if (rkt_readl(dev, MUnit.OMRx[0]) & KERNEL_PANIC)
440 if (aac_rkt_restart_adapter(dev))
441 goto error_iounmap;
442 /*
443 * Check to see if the board failed any self tests.
444 */
445 if (rkt_readl(dev, MUnit.OMRx[0]) & SELF_TEST_FAILED) {
446 printk(KERN_ERR "%s%d: adapter self-test failed.\n", dev->name, instance);
447 goto error_iounmap;
448 }
449 /*
450 * Check to see if the monitor panic'd while booting.
451 */
452 if (rkt_readl(dev, MUnit.OMRx[0]) & MONITOR_PANIC) {
453 printk(KERN_ERR "%s%d: adapter monitor panic.\n", dev->name, instance);
454 goto error_iounmap;
455 }
456 start = jiffies;
457 /*
458 * Wait for the adapter to be up and running. Wait up to 3 minutes
459 */
460 while (!(rkt_readl(dev, MUnit.OMRx[0]) & KERNEL_UP_AND_RUNNING))
461 {
462 if(time_after(jiffies, start+startup_timeout*HZ))
463 {
464 status = rkt_readl(dev, MUnit.OMRx[0]);
465 printk(KERN_ERR "%s%d: adapter kernel failed to start, init status = %lx.\n",
466 dev->name, instance, status);
467 goto error_iounmap;
468 }
469 msleep(1);
470 }
471 if (request_irq(dev->scsi_host_ptr->irq, aac_rkt_intr, IRQF_SHARED|IRQF_DISABLED, "aacraid", (void *)dev)<0)
472 {
473 printk(KERN_ERR "%s%d: Interrupt unavailable.\n", name, instance);
474 goto error_iounmap;
475 }
476 /*
477 * Fill in the function dispatch table. 71 * Fill in the function dispatch table.
478 */ 72 */
479 dev->a_ops.adapter_interrupt = aac_rkt_interrupt_adapter; 73 dev->a_ops.adapter_ioremap = aac_rkt_ioremap;
480 dev->a_ops.adapter_disable_int = aac_rkt_disable_interrupt;
481 dev->a_ops.adapter_notify = aac_rkt_notify_adapter;
482 dev->a_ops.adapter_sync_cmd = rkt_sync_cmd;
483 dev->a_ops.adapter_check_health = aac_rkt_check_health;
484 dev->a_ops.adapter_send = aac_rkt_send;
485
486 /*
487 * First clear out all interrupts. Then enable the one's that we
488 * can handle.
489 */
490 rkt_writeb(dev, MUnit.OIMR, 0xff);
491 rkt_writel(dev, MUnit.ODR, 0xffffffff);
492 rkt_writeb(dev, MUnit.OIMR, dev->OIMR = 0xfb);
493 74
494 if (aac_init_adapter(dev) == NULL) 75 retval = _aac_rx_init(dev);
495 goto error_irq; 76 if (retval)
77 return retval;
496 if (dev->new_comm_interface) { 78 if (dev->new_comm_interface) {
497 /* 79 /*
498 * FIB Setup has already been done, but we can minimize the 80 * FIB Setup has already been done, but we can minimize the
@@ -509,20 +91,11 @@ int aac_rkt_init(struct aac_dev *dev)
509 dev->init->MaxIoCommands = cpu_to_le32(246); 91 dev->init->MaxIoCommands = cpu_to_le32(246);
510 dev->scsi_host_ptr->can_queue = 246 - AAC_NUM_MGT_FIB; 92 dev->scsi_host_ptr->can_queue = 246 - AAC_NUM_MGT_FIB;
511 } 93 }
512 rkt_writeb(dev, MUnit.OIMR, dev->OIMR = 0xf7);
513 } 94 }
514 /* 95 /*
515 * Tell the adapter that all is configured, and it can start 96 * Tell the adapter that all is configured, and it can start
516 * accepting requests 97 * accepting requests
517 */ 98 */
518 aac_rkt_start_adapter(dev); 99 aac_rx_start_adapter(dev);
519 return 0; 100 return 0;
520
521error_irq:
522 rkt_writeb(dev, MUnit.OIMR, dev->OIMR = 0xff);
523 free_irq(dev->scsi_host_ptr->irq, (void *)dev);
524
525error_iounmap:
526
527 return -1;
528} 101}
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