?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
Import 2.3.18pre1
[davej-history.git] / drivers / scsi / qlogicpti.c
blobd2c00c285ff038598efcc4598cb1f60723aa9258
1 /* qlogicpti.c: Performance Technologies QlogicISP sbus card driver.
2 *
3 * Copyright (C) 1996 David S. Miller (davem@caipfs.rutgers.edu)
4 *
5 * A lot of this driver was directly stolen from Erik H. Moe's PCI
6 * Qlogic ISP driver. Mucho kudos to him for this code.
7 *
8 * An even bigger kudos to John Grana at Performance Technologies
9 * for providing me with the hardware to write this driver, you rule
10 * John you really do.
11 *
12 * May, 2, 1997: Added support for QLGC,isp --jj
13 */
14
15 #include <linux/kernel.h>
16 #include <linux/delay.h>
17 #include <linux/types.h>
18 #include <linux/string.h>
19 #include <linux/malloc.h>
20 #include <linux/blk.h>
21 #include <linux/proc_fs.h>
22 #include <linux/stat.h>
23 #include <linux/init.h>
24 #include <linux/spinlock.h>
25
26 #include <asm/byteorder.h>
27
28 #include "scsi.h"
29 #include "hosts.h"
30 #include "qlogicpti.h"
31
32 #include <asm/sbus.h>
33 #include <asm/dma.h>
34 #include <asm/system.h>
35 #include <asm/machines.h>
36 #include <asm/ptrace.h>
37 #include <asm/pgtable.h>
38 #include <asm/oplib.h>
39 #include <asm/vaddrs.h>
40 #include <asm/io.h>
41 #include <asm/irq.h>
42
43 #include <linux/module.h>
44
45 #define MAX_TARGETS 16
46 #define MAX_LUNS 8
47
48 #define DEFAULT_LOOP_COUNT 1000000
49
50 #include "qlogicpti_asm.c"
51
52 static struct qlogicpti *qptichain;
53 static int qptis_running = 0;
54
55 #define PACKB(a, b) (((a)<<4)|(b))
56
57 const u_char mbox_param[] = {
58 PACKB(1, 1), /* MBOX_NO_OP */
59 PACKB(5, 5), /* MBOX_LOAD_RAM */
60 PACKB(2, 0), /* MBOX_EXEC_FIRMWARE */
61 PACKB(5, 5), /* MBOX_DUMP_RAM */
62 PACKB(3, 3), /* MBOX_WRITE_RAM_WORD */
63 PACKB(2, 3), /* MBOX_READ_RAM_WORD */
64 PACKB(6, 6), /* MBOX_MAILBOX_REG_TEST */
65 PACKB(2, 3), /* MBOX_VERIFY_CHECKSUM */
66 PACKB(1, 3), /* MBOX_ABOUT_FIRMWARE */
67 PACKB(0, 0), /* 0x0009 */
68 PACKB(0, 0), /* 0x000a */
69 PACKB(0, 0), /* 0x000b */
70 PACKB(0, 0), /* 0x000c */
71 PACKB(0, 0), /* 0x000d */
72 PACKB(1, 2), /* MBOX_CHECK_FIRMWARE */
73 PACKB(0, 0), /* 0x000f */
74 PACKB(5, 5), /* MBOX_INIT_REQ_QUEUE */
75 PACKB(6, 6), /* MBOX_INIT_RES_QUEUE */
76 PACKB(4, 4), /* MBOX_EXECUTE_IOCB */
77 PACKB(2, 2), /* MBOX_WAKE_UP */
78 PACKB(1, 6), /* MBOX_STOP_FIRMWARE */
79 PACKB(4, 4), /* MBOX_ABORT */
80 PACKB(2, 2), /* MBOX_ABORT_DEVICE */
81 PACKB(3, 3), /* MBOX_ABORT_TARGET */
82 PACKB(2, 2), /* MBOX_BUS_RESET */
83 PACKB(2, 3), /* MBOX_STOP_QUEUE */
84 PACKB(2, 3), /* MBOX_START_QUEUE */
85 PACKB(2, 3), /* MBOX_SINGLE_STEP_QUEUE */
86 PACKB(2, 3), /* MBOX_ABORT_QUEUE */
87 PACKB(2, 4), /* MBOX_GET_DEV_QUEUE_STATUS */
88 PACKB(0, 0), /* 0x001e */
89 PACKB(1, 3), /* MBOX_GET_FIRMWARE_STATUS */
90 PACKB(1, 2), /* MBOX_GET_INIT_SCSI_ID */
91 PACKB(1, 2), /* MBOX_GET_SELECT_TIMEOUT */
92 PACKB(1, 3), /* MBOX_GET_RETRY_COUNT */
93 PACKB(1, 2), /* MBOX_GET_TAG_AGE_LIMIT */
94 PACKB(1, 2), /* MBOX_GET_CLOCK_RATE */
95 PACKB(1, 2), /* MBOX_GET_ACT_NEG_STATE */
96 PACKB(1, 2), /* MBOX_GET_ASYNC_DATA_SETUP_TIME */
97 PACKB(1, 3), /* MBOX_GET_SBUS_PARAMS */
98 PACKB(2, 4), /* MBOX_GET_TARGET_PARAMS */
99 PACKB(2, 4), /* MBOX_GET_DEV_QUEUE_PARAMS */
100 PACKB(0, 0), /* 0x002a */
101 PACKB(0, 0), /* 0x002b */
102 PACKB(0, 0), /* 0x002c */
103 PACKB(0, 0), /* 0x002d */
104 PACKB(0, 0), /* 0x002e */
105 PACKB(0, 0), /* 0x002f */
106 PACKB(2, 2), /* MBOX_SET_INIT_SCSI_ID */
107 PACKB(2, 2), /* MBOX_SET_SELECT_TIMEOUT */
108 PACKB(3, 3), /* MBOX_SET_RETRY_COUNT */
109 PACKB(2, 2), /* MBOX_SET_TAG_AGE_LIMIT */
110 PACKB(2, 2), /* MBOX_SET_CLOCK_RATE */
111 PACKB(2, 2), /* MBOX_SET_ACTIVE_NEG_STATE */
112 PACKB(2, 2), /* MBOX_SET_ASYNC_DATA_SETUP_TIME */
113 PACKB(3, 3), /* MBOX_SET_SBUS_CONTROL_PARAMS */
114 PACKB(4, 4), /* MBOX_SET_TARGET_PARAMS */
115 PACKB(4, 4), /* MBOX_SET_DEV_QUEUE_PARAMS */
116 PACKB(0, 0), /* 0x003a */
117 PACKB(0, 0), /* 0x003b */
118 PACKB(0, 0), /* 0x003c */
119 PACKB(0, 0), /* 0x003d */
120 PACKB(0, 0), /* 0x003e */
121 PACKB(0, 0), /* 0x003f */
122 PACKB(0, 0), /* 0x0040 */
123 PACKB(0, 0), /* 0x0041 */
124 PACKB(0, 0) /* 0x0042 */
125 };
126
127 #define MAX_MBOX_COMMAND (sizeof(mbox_param)/sizeof(u_short))
128
129 /* queue length's _must_ be power of two: */
130 #define QUEUE_DEPTH(in, out, ql) ((in - out) & (ql))
131 #define REQ_QUEUE_DEPTH(in, out) QUEUE_DEPTH(in, out, \
132 QLOGICISP_REQ_QUEUE_LEN)
133 #define RES_QUEUE_DEPTH(in, out) QUEUE_DEPTH(in, out, RES_QUEUE_LEN)
134
135 static struct proc_dir_entry proc_scsi_qlogicpti = {
136 PROC_SCSI_QLOGICPTI, 7, "qlogicpti",
137 S_IFDIR | S_IRUGO | S_IXUGO, 2
138 };
139
140 static inline void qlogicpti_enable_irqs(struct qlogicpti_regs *qregs)
141 {
142 qregs->sbus_ctrl = SBUS_CTRL_ERIRQ | SBUS_CTRL_GENAB;
143 }
144
145
146 static inline void qlogicpti_disable_irqs(struct qlogicpti_regs *qregs)
147 {
148 qregs->sbus_ctrl = 0;
149 }
150
151 static inline void set_sbus_cfg1(struct qlogicpti_regs *qregs, unsigned char bursts)
152 {
153 if(bursts & DMA_BURST32) {
154 qregs->sbus_cfg1 = (SBUS_CFG1_BENAB | SBUS_CFG1_B32);
155 } else if(bursts & DMA_BURST16) {
156 qregs->sbus_cfg1 = (SBUS_CFG1_BENAB | SBUS_CFG1_B16);
157 } else if(bursts & DMA_BURST8) {
158 qregs->sbus_cfg1 = (SBUS_CFG1_BENAB | SBUS_CFG1_B8);
159 } else {
160 qregs->sbus_cfg1 = 0; /* No sbus bursts for you... */
161 }
162 }
163
164 static int qlogicpti_mbox_command(struct qlogicpti *qpti, u_short param[], int force)
165 {
166 struct qlogicpti_regs *qregs = qpti->qregs;
167 int loop_count;
168
169 if(mbox_param[param[0]] == 0)
170 return 1;
171
172 loop_count = DEFAULT_LOOP_COUNT;
173 while(--loop_count && (qregs->hcctrl & HCCTRL_HIRQ))
174 barrier();
175 if(!loop_count)
176 printk(KERN_EMERG "qlogicpti: mbox_command loop timeout #1\n");
177
178 switch(mbox_param[param[0]] >> 4) {
179 case 6: qregs->mbox5 = param[5];
180 case 5: qregs->mbox4 = param[4];
181 case 4: qregs->mbox3 = param[3];
182 case 3: qregs->mbox2 = param[2];
183 case 2: qregs->mbox1 = param[1];
184 case 1: qregs->mbox0 = param[0];
185 }
186
187 qregs->hcctrl |= HCCTRL_SHIRQ;
188
189 loop_count = DEFAULT_LOOP_COUNT;
190 while(--loop_count && !(qregs->sbus_semaphore & SBUS_SEMAPHORE_LCK))
191 udelay(20);
192 if(!loop_count)
193 printk(KERN_EMERG "qlogicpti: mbox_command loop timeout #2\n");
194
195 loop_count = DEFAULT_LOOP_COUNT;
196 while(--loop_count && (qregs->mbox0 == 0x04))
197 udelay(20);
198 if(!loop_count)
199 printk(KERN_EMERG "qlogicpti: mbox_command loop timeout #3\n");
200
201 if(force) {
202 qregs->hcctrl = HCCTRL_CRIRQ;
203 } else {
204 if((qregs->mbox5 - qpti->res_out_ptr) == 0)
205 qregs->hcctrl = HCCTRL_CRIRQ;
206 }
207
208 switch(mbox_param[param[0]] & 0xf) {
209 case 6: param[5] = qregs->mbox5;
210 case 5: param[4] = qregs->mbox4;
211 case 4: param[3] = qregs->mbox3;
212 case 3: param[2] = qregs->mbox2;
213 case 2: param[1] = qregs->mbox1;
214 case 1: param[0] = qregs->mbox0;
215 }
216
217 qregs->sbus_semaphore &= ~(SBUS_SEMAPHORE_LCK);
218 return 0;
219 }
220
221 static int qlogicpti_reset_hardware(struct Scsi_Host *host)
222 {
223 struct qlogicpti *qpti = (struct qlogicpti *) host->hostdata;
224 struct qlogicpti_regs *qregs = qpti->qregs;
225 u_short param[6];
226 unsigned short risc_code_addr;
227 int loop_count, i;
228 unsigned long flags;
229
230 if(qpti->is_pti != 0)
231 risc_code_addr = pti_risc_code_addr01;
232 else
233 risc_code_addr = sbus_risc_code_addr01;
234
235 save_flags(flags); cli();
236
237 qregs->hcctrl = HCCTRL_PAUSE;
238
239 /* Only reset the scsi bus if it is not free. */
240 if(qregs->cpu_pctrl & CPU_PCTRL_BSY) {
241 qregs->cpu_oride = CPU_ORIDE_RMOD;
242 qregs->cpu_cmd = CPU_CMD_BRESET;
243 udelay(400);
244 }
245
246 qregs->sbus_ctrl = SBUS_CTRL_RESET;
247 qregs->cmd_dma_ctrl = (DMA_CTRL_CCLEAR | DMA_CTRL_CIRQ);
248 qregs->data_dma_ctrl = (DMA_CTRL_CCLEAR | DMA_CTRL_CIRQ);
249
250 loop_count = DEFAULT_LOOP_COUNT;
251 while(--loop_count && ((qregs->mbox0 & 0xff) == 0x04))
252 udelay(20);
253 if(!loop_count)
254 printk(KERN_EMERG "qlogicpti: reset_hardware loop timeout\n");
255
256 qregs->hcctrl = HCCTRL_PAUSE;
257 set_sbus_cfg1(qregs, qpti->bursts);
258 qlogicpti_enable_irqs(qregs);
259
260 if(qregs->risc_psr & RISC_PSR_ULTRA) {
261 qpti->ultra = 1;
262 qregs->risc_mtreg = (RISC_MTREG_P0ULTRA | RISC_MTREG_P1ULTRA);
263 } else {
264 qpti->ultra = 0;
265 qregs->risc_mtreg = (RISC_MTREG_P0DFLT | RISC_MTREG_P1DFLT);
266 }
267
268 /* Release the RISC processor. */
269 qregs->hcctrl = HCCTRL_REL;
270
271 /* Get RISC to start executing the firmware code. */
272 param[0] = MBOX_EXEC_FIRMWARE;
273 param[1] = risc_code_addr;
274 if(qlogicpti_mbox_command(qpti, param, 1)) {
275 printk(KERN_EMERG "qlogicpti%d: Cannot execute ISP firmware.\n",
276 qpti->qpti_id);
277 restore_flags(flags);
278 return 1;
279 }
280
281 /* Set initiator scsi ID. */
282 param[0] = MBOX_SET_INIT_SCSI_ID;
283 param[1] = qpti->host_param.initiator_scsi_id;
284 if(qlogicpti_mbox_command(qpti, param, 1) ||
285 (param[0] != MBOX_COMMAND_COMPLETE)) {
286 printk(KERN_EMERG "qlogicpti%d: Cannot set initiator SCSI ID.\n",
287 qpti->qpti_id);
288 restore_flags(flags);
289 return 1;
290 }
291
292 /* Initialize state of the queues, both hw and sw. */
293 qpti->req_in_ptr = qpti->res_out_ptr = 0;
294
295 param[0] = MBOX_INIT_RES_QUEUE;
296 param[1] = RES_QUEUE_LEN + 1;
297 param[2] = (u_short) (qpti->res_dvma >> 16);
298 param[3] = (u_short) (qpti->res_dvma & 0xffff);
299 param[4] = param[5] = 0;
300 if(qlogicpti_mbox_command(qpti, param, 1)) {
301 printk(KERN_EMERG "qlogicpti%d: Cannot init response queue.\n",
302 qpti->qpti_id);
303 restore_flags(flags);
304 return 1;
305 }
306
307 param[0] = MBOX_INIT_REQ_QUEUE;
308 param[1] = QLOGICISP_REQ_QUEUE_LEN + 1;
309 param[2] = (u_short) (qpti->req_dvma >> 16);
310 param[3] = (u_short) (qpti->req_dvma & 0xffff);
311 param[4] = param[5] = 0;
312 if(qlogicpti_mbox_command(qpti, param, 1)) {
313 printk(KERN_EMERG "qlogicpti%d: Cannot init request queue.\n",
314 qpti->qpti_id);
315 restore_flags(flags);
316 return 1;
317 }
318
319 param[0] = MBOX_SET_RETRY_COUNT;
320 param[1] = qpti->host_param.retry_count;
321 param[2] = qpti->host_param.retry_delay;
322 qlogicpti_mbox_command(qpti, param, 0);
323
324 param[0] = MBOX_SET_TAG_AGE_LIMIT;
325 param[1] = qpti->host_param.tag_aging;
326 qlogicpti_mbox_command(qpti, param, 0);
327
328 for(i = 0; i < MAX_TARGETS; i++) {
329 param[0] = MBOX_GET_DEV_QUEUE_PARAMS;
330 param[1] = (i << 8);
331 qlogicpti_mbox_command(qpti, param, 0);
332 }
333
334 param[0] = MBOX_GET_FIRMWARE_STATUS;
335 qlogicpti_mbox_command(qpti, param, 0);
336
337 param[0] = MBOX_SET_SELECT_TIMEOUT;
338 param[1] = qpti->host_param.selection_timeout;
339 qlogicpti_mbox_command(qpti, param, 0);
340
341 for(i = 0; i < MAX_TARGETS; i++) {
342 param[0] = MBOX_SET_TARGET_PARAMS;
343 param[1] = (i << 8);
344 param[2] = (qpti->dev_param[i].device_flags << 8);
345 param[3] = (qpti->dev_param[i].synchronous_offset << 8) |
346 qpti->dev_param[i].synchronous_period;
347 qlogicpti_mbox_command(qpti, param, 0);
348 }
349
350 restore_flags(flags);
351 return 0;
352 }
353
354 #define PTI_RESET_LIMIT 400
355
356 static int __init qlogicpti_load_firmware(struct qlogicpti *qpti)
357 {
358 struct qlogicpti_regs *qregs = qpti->qregs;
359 unsigned short csum = 0;
360 unsigned short param[6];
361 unsigned short *risc_code, risc_code_addr, risc_code_length;
362 unsigned long flags;
363 #if !defined(MODULE) && !defined(__sparc_v9__)
364 unsigned long dvma_addr;
365 #endif
366 int i, timeout;
367
368 if(qpti->is_pti != 0) {
369 risc_code = &pti_risc_code01[0];
370 risc_code_addr = pti_risc_code_addr01;
371 risc_code_length = pti_risc_code_length01;
372 } else {
373 risc_code = &sbus_risc_code01[0];
374 risc_code_addr = sbus_risc_code_addr01;
375 risc_code_length = sbus_risc_code_length01;
376 }
377
378 save_flags(flags); cli();
379
380 /* Verify the checksum twice, one before loading it, and once
381 * afterwards via the mailbox commands.
382 */
383 for(i = 0; i < risc_code_length; i++)
384 csum += risc_code[i];
385 if(csum) {
386 printk(KERN_EMERG "qlogicpti%d: Aieee, firmware checksum failed!",
387 qpti->qpti_id);
388 return 1;
389 }
390 qregs->sbus_ctrl = SBUS_CTRL_RESET;
391 qregs->cmd_dma_ctrl = (DMA_CTRL_CCLEAR | DMA_CTRL_CIRQ);
392 qregs->data_dma_ctrl = (DMA_CTRL_CCLEAR | DMA_CTRL_CIRQ);
393 timeout = PTI_RESET_LIMIT;
394 while(--timeout && (qregs->sbus_ctrl & SBUS_CTRL_RESET))
395 udelay(20);
396 if(!timeout) {
397 printk(KERN_EMERG "qlogicpti%d: Cannot reset the ISP.", qpti->qpti_id);
398 return 1;
399 }
400
401 qregs->hcctrl = HCCTRL_RESET;
402 mdelay(1);
403
404 qregs->sbus_ctrl = (SBUS_CTRL_GENAB | SBUS_CTRL_ERIRQ);
405 set_sbus_cfg1(qregs, qpti->bursts);
406 qregs->sbus_semaphore = 0;
407
408 if(qregs->risc_psr & RISC_PSR_ULTRA) {
409 qpti->ultra = 1;
410 qregs->risc_mtreg = (RISC_MTREG_P0ULTRA | RISC_MTREG_P1ULTRA);
411 } else {
412 qpti->ultra = 0;
413 qregs->risc_mtreg = (RISC_MTREG_P0DFLT | RISC_MTREG_P1DFLT);
414 }
415
416 qregs->hcctrl = HCCTRL_REL;
417
418 /* Pin lines are only stable while RISC is paused. */
419 qregs->hcctrl = HCCTRL_PAUSE;
420 if(qregs->cpu_pdiff & CPU_PDIFF_MODE)
421 qpti->differential = 1;
422 else
423 qpti->differential = 0;
424 qregs->hcctrl = HCCTRL_REL;
425
426 param[0] = MBOX_STOP_FIRMWARE;
427 param[1] = param[2] = param[3] = param[4] = param[5] = 0;
428 if(qlogicpti_mbox_command(qpti, param, 1)) {
429 printk(KERN_EMERG "qlogicpti%d: Cannot stop firmware for reload.\n",
430 qpti->qpti_id);
431 restore_flags(flags);
432 return 1;
433 }
434
435 /* Load the firmware. */
436 #if !defined(MODULE) && !defined(__sparc_v9__)
437 if (sparc_cpu_model != sun4d) {
438 dvma_addr = (unsigned long) mmu_lockarea((char *)&risc_code[0],
439 (sizeof(u_short) * risc_code_length));
440 param[0] = MBOX_LOAD_RAM;
441 param[1] = risc_code_addr;
442 param[2] = (dvma_addr >> 16);
443 param[3] = (dvma_addr & 0xffff);
444 param[4] = (sizeof(u_short) * risc_code_length);
445 if(qlogicpti_mbox_command(qpti, param, 1) ||
446 (param[0] != MBOX_COMMAND_COMPLETE)) {
447 printk(KERN_EMERG "qlogicpti%d: Firmware dload failed, I'm bolixed!\n",
448 qpti->qpti_id);
449 restore_flags(flags);
450 return 1;
451 }
452 mmu_unlockarea((char *)dvma_addr, (sizeof(u_short) * risc_code_length));
453 } else
454 #endif
455 /* We need to do it this slow way always on Ultra, SS[12]000. */
456 for(i = 0; i < risc_code_length; i++) {
457 param[0] = MBOX_WRITE_RAM_WORD;
458 param[1] = risc_code_addr + i;
459 param[2] = risc_code[i];
460 if(qlogicpti_mbox_command(qpti, param, 1) ||
461 param[0] != MBOX_COMMAND_COMPLETE) {
462 printk("qlogicpti%d: Firmware dload failed, I'm bolixed!\n",
463 qpti->qpti_id);
464 restore_flags(flags);
465 return 1;
466 }
467 }
468
469 /* Reset the ISP again. */
470 qregs->hcctrl = HCCTRL_RESET;
471 mdelay(1);
472
473 qlogicpti_enable_irqs(qregs);
474 qregs->sbus_semaphore = 0;
475 qregs->hcctrl = HCCTRL_REL;
476
477 /* Ask ISP to verify the checksum of the new code. */
478 param[0] = MBOX_VERIFY_CHECKSUM;
479 param[1] = risc_code_addr;
480 if(qlogicpti_mbox_command(qpti, param, 1) ||
481 (param[0] != MBOX_COMMAND_COMPLETE)) {
482 printk(KERN_EMERG "qlogicpti%d: New firmware csum failure!\n",
483 qpti->qpti_id);
484 restore_flags(flags);
485 return 1;
486 }
487
488 /* Start using newly downloaded firmware. */
489 param[0] = MBOX_EXEC_FIRMWARE;
490 param[1] = risc_code_addr;
491 qlogicpti_mbox_command(qpti, param, 1);
492
493 param[0] = MBOX_ABOUT_FIRMWARE;
494 if(qlogicpti_mbox_command(qpti, param, 1) ||
495 (param[0] != MBOX_COMMAND_COMPLETE)) {
496 printk(KERN_EMERG "qlogicpti%d: AboutFirmware cmd fails.\n",
497 qpti->qpti_id);
498 restore_flags(flags);
499 return 1;
500 }
501
502 /* Snag the major and minor revisions from the result. */
503 qpti->fware_majrev = param[1];
504 qpti->fware_minrev = param[2];
505
506 if(qpti->is_pti != 0) {
507 /* Load scsi initiator ID and interrupt level into sbus static ram. */
508 param[0] = MBOX_WRITE_RAM_WORD;
509 param[1] = 0xff80;
510 param[2] = (unsigned short) qpti->scsi_id;
511 qlogicpti_mbox_command(qpti, param, 1);
512
513 param[0] = MBOX_WRITE_RAM_WORD;
514 param[1] = 0xff00;
515 param[2] = (unsigned short) 3;
516 qlogicpti_mbox_command(qpti, param, 1);
517 }
518
519 restore_flags(flags);
520 return 0;
521 }
522
523 static int qlogicpti_verify_tmon(struct qlogicpti *qpti)
524 {
525 int curstat = *qpti->sreg;
526
527 curstat &= 0xf0;
528 if(!(curstat & SREG_FUSE) && (qpti->swsreg & SREG_FUSE))
529 printk("qlogicpti%d: Fuse returned to normal state.\n", qpti->qpti_id);
530 if(!(curstat & SREG_TPOWER) && (qpti->swsreg & SREG_TPOWER))
531 printk("qlogicpti%d: termpwr back to normal state.\n", qpti->qpti_id);
532 if(curstat != qpti->swsreg) {
533 int error = 0;
534 if(curstat & SREG_FUSE) {
535 error++;
536 printk("qlogicpti%d: Fuse is open!\n", qpti->qpti_id);
537 }
538 if(curstat & SREG_TPOWER) {
539 error++;
540 printk("qlogicpti%d: termpwr failure\n", qpti->qpti_id);
541 }
542 if(qpti->differential &&
543 (curstat & SREG_DSENSE) != SREG_DSENSE) {
544 error++;
545 printk("qlogicpti%d: You have a single ended device on a "
546 "differential bus! Please fix!\n", qpti->qpti_id);
547 }
548 qpti->swsreg = curstat;
549 return error;
550 }
551 return 0;
552 }
553
554 static inline void qlogicpti_set_hostdev_defaults(struct qlogicpti *qpti)
555 {
556 int i;
557
558 qpti->host_param.initiator_scsi_id = qpti->scsi_id;
559 qpti->host_param.bus_reset_delay = 3;
560 qpti->host_param.retry_count = 0;
561 qpti->host_param.retry_delay = 5;
562 qpti->host_param.async_data_setup_time = 3;
563 qpti->host_param.req_ack_active_negation = 1;
564 qpti->host_param.data_line_active_negation = 1;
565 qpti->host_param.data_dma_burst_enable = 1;
566 qpti->host_param.command_dma_burst_enable = 1;
567 qpti->host_param.tag_aging = 8;
568 qpti->host_param.selection_timeout = 250;
569 qpti->host_param.max_queue_depth = 256;
570
571 for(i = 0; i < MAX_TARGETS; i++) {
572 qpti->dev_param[i].device_flags = 0xf9;
573 qpti->dev_param[i].execution_throttle = 16;
574 qpti->dev_param[i].synchronous_period = 16;
575 qpti->dev_param[i].synchronous_offset = 12;
576 qpti->dev_param[i].device_enable = 1;
577 }
578 }
579
580 static void do_qlogicpti_intr_handler(int irq, void *dev_id, struct pt_regs *regs);
581 #ifndef __sparc_v9__
582 static void do_qlogicpti_intr_handler_sun4m(int irq, void *dev_id, struct pt_regs *regs);
583 #endif
584
585 /* Detect all PTI Qlogic ISP's in the machine. */
586 int __init qlogicpti_detect(Scsi_Host_Template *tpnt)
587 {
588 struct qlogicpti *qpti, *qlink;
589 struct Scsi_Host *qpti_host;
590 struct linux_sbus *sbus;
591 struct linux_sbus_device *qpti_dev, *sbdev_iter;
592 struct qlogicpti_regs *qregs;
593 volatile unsigned char *sreg;
594 unsigned char bsizes, bsizes_more;
595 int nqptis = 0, nqptis_in_use = 0;
596 int qpti_node;
597 int is_pti;
598
599 tpnt->proc_dir = &proc_scsi_qlogicpti;
600 qptichain = 0;
601 if(!SBus_chain)
602 return 0;
603 for_each_sbus(sbus) {
604 for_each_sbusdev(sbdev_iter, sbus) {
605 qpti_dev = sbdev_iter;
606
607 /* Is this a red snapper? */
608 if(strcmp(qpti_dev->prom_name, "ptisp") &&
609 strcmp(qpti_dev->prom_name, "PTI,ptisp") &&
610 strcmp(qpti_dev->prom_name, "QLGC,isp"))
611 continue;
612
613 /* Sometimes Antares cards come up not completely
614 * setup, and we get a report of a zero IRQ.
615 * Skip over them in such cases so we survive.
616 */
617 if(qpti_dev->irqs[0] == 0) {
618 printk("qpti%d: Adapter reports no interrupt, "
619 "skipping over this card.", nqptis);
620 continue;
621 }
622
623 /* Yep, register and allocate software state. */
624 qpti_host = scsi_register(tpnt, sizeof(struct qlogicpti));
625 if(!qpti_host)
626 panic("Cannot register PTI Qlogic ISP SCSI host");
627 qpti = (struct qlogicpti *) qpti_host->hostdata;
628 if(!qpti)
629 panic("No qpti in hostdata");
630
631 /* We are wide capable, 16 targets. */
632 qpti_host->max_id = MAX_TARGETS;
633
634 #ifdef __sparc_v9__
635 qpti_host->unchecked_isa_dma = 1;
636 #endif
637
638 /* Setup back pointers and misc. state. */
639 qpti->qhost = qpti_host;
640 qpti->qdev = qpti_dev;
641 qpti->qpti_id = nqptis++;
642
643 /* Insert this one into the global interrupt service chain. */
644 if(qptichain) {
645 qlink = qptichain;
646 while(qlink->next) qlink = qlink->next;
647 qlink->next = qpti;
648 } else {
649 qptichain = qpti;
650 }
651 qpti->next = 0;
652
653 /* More misc. prom information. */
654 qpti_node = qpti_dev->prom_node;
655 prom_getstring(qpti_node, "name", qpti->prom_name,
656 sizeof(qpti->prom_name));
657 qpti->prom_node = qpti_node;
658
659 qpti->is_pti = is_pti =
660 (strcmp (qpti->prom_name, "QLGC,isp") != 0);
661
662 /* Setup the reg property for this device. */
663 prom_apply_sbus_ranges(qpti->qdev->my_bus,
664 qpti->qdev->reg_addrs,
665 1, qpti->qdev);
666
667 /* Map in Qlogic,ISP regs and the PTI status reg. */
668 qpti->qregs = qregs = (struct qlogicpti_regs *)
669 sparc_alloc_io(qpti->qdev->reg_addrs[0].phys_addr, 0,
670 qpti->qdev->reg_addrs[0].reg_size,
671 "PTI Qlogic/ISP Registers",
672 qpti->qdev->reg_addrs[0].which_io, 0x0);
673 if(!qregs)
674 panic("PTI Qlogic/ISP registers unmappable");
675
676 if(is_pti) {
677 /* Map this one read only. */
678 qpti->sreg = sreg = (volatile unsigned char *)
679 sparc_alloc_io((qpti->qdev->reg_addrs[0].phys_addr +
680 (16 * 4096)), 0,
681 sizeof(unsigned char),
682 "PTI Qlogic/ISP Status Reg",
683 qpti->qdev->reg_addrs[0].which_io, 1);
684 if(!sreg)
685 panic("PTI Qlogic/ISP status reg unmappable");
686 qpti->swsreg = 0;
687 }
688
689 qpti_host->base = (unsigned char *)qregs;
690 qpti_host->io_port = (unsigned int) ((unsigned long)qregs);
691 qpti_host->n_io_port = (unsigned char)
692 qpti->qdev->reg_addrs[0].reg_size;
693
694 qpti_host->irq = qpti->irq = qpti->qdev->irqs[0];
695
696 /* On Ultra and S{S1,C2}000 we must always call request_irq for each
697 * qpti, so that imap registers get setup etc.
698 * But irq values are different in that case anyway...
699 * Otherwise allocate the irq only if necessary.
700 */
701 for_each_qlogicpti(qlink) {
702 if((qlink != qpti) && (qpti->irq == qlink->irq)) {
703 goto qpti_irq_acquired; /* BASIC rulez */
704 }
705 }
706 if(request_irq(qpti->qhost->irq,
707 #ifndef __sparc_v9__
708 (sparc_cpu_model == sun4m || sparc_cpu_model == sun4c) ?
709 do_qlogicpti_intr_handler_sun4m :
710 #endif
711 do_qlogicpti_intr_handler,
712 SA_SHIRQ, "PTI Qlogic/ISP SCSI", qpti)) {
713 printk("Cannot acquire PTI Qlogic/ISP irq line\n");
714 /* XXX Unmap regs, unregister scsi host, free things. */
715 continue;
716 }
717 qpti_irq_acquired:
718 printk("qpti%d: IRQ %s ",
719 qpti->qpti_id, __irq_itoa(qpti->qhost->irq));
720
721 /* Figure out our scsi ID on the bus */
722 qpti->scsi_id = prom_getintdefault(qpti->prom_node,
723 "initiator-id",
724 -1);
725 if(qpti->scsi_id == -1)
726 qpti->scsi_id = prom_getintdefault(qpti->prom_node,
727 "scsi-initiator-id",
728 -1);
729 if(qpti->scsi_id == -1)
730 qpti->scsi_id =
731 prom_getintdefault(qpti->qdev->my_bus->prom_node,
732 "scsi-initiator-id", 7);
733 qpti->qhost->this_id = qpti->scsi_id;
734 printk("SCSI ID %d ", qpti->scsi_id);
735
736 /* Check for what the best SBUS burst we can use happens
737 * to be on this machine.
738 */
739 bsizes = prom_getintdefault(qpti->prom_node,"burst-sizes",0xff);
740 bsizes &= 0xff;
741 bsizes_more = prom_getintdefault(qpti->qdev->my_bus->prom_node,
742 "burst-sizes", 0xff);
743 if(bsizes_more != 0xff)
744 bsizes &= bsizes_more;
745 if(bsizes == 0xff || (bsizes & DMA_BURST16)==0 ||
746 (bsizes & DMA_BURST32) == 0)
747 bsizes = (DMA_BURST32 - 1);
748 qpti->bursts = bsizes;
749
750 /* Clear out Scsi_Cmnd array. */
751 memset(qpti->cmd_slots, 0, sizeof(qpti->cmd_slots));
752
753 /* The request and response queues must each be aligned
754 * on a page boundry.
755 */
756
757 #define QSIZE(entries) (((entries) + 1) * QUEUE_ENTRY_LEN)
758
759 qpti->res_cpu = sparc_dvma_malloc(QSIZE(RES_QUEUE_LEN),
760 "PTISP Response Queue",
761 &qpti->res_dvma);
762 qpti->req_cpu = sparc_dvma_malloc(QSIZE(QLOGICISP_REQ_QUEUE_LEN),
763 "PTISP Request Queue",
764 &qpti->req_dvma);
765
766 #undef QSIZE
767
768
769 /* Set adapter and per-device default values. */
770 qlogicpti_set_hostdev_defaults(qpti);
771
772 /* Load the firmware. */
773 /* XXX Find out where is it possible to download
774 our sbus_risc_code on non-PTI ISP1000. */
775 if(is_pti && qlogicpti_load_firmware(qpti))
776 panic("SBUS Qlogic/ISP firmware load failed");
777
778 if (is_pti) {
779 /* Check the PTI status reg. */
780 if(qlogicpti_verify_tmon(qpti))
781 panic("PTI Qlogic/ISP tmon verification failed");
782 }
783
784 /* Reset the ISP and init res/req queues. */
785 if(qlogicpti_reset_hardware(qpti_host))
786 panic("PTI Qlogic/ISP cannot be reset");
787
788 if (is_pti) {
789 printk("(Firmware v%d.%d)",
790 qpti->fware_majrev, qpti->fware_minrev);
791 } else {
792 char buffer[60];
793
794 prom_getstring (qpti_node, "isp-fcode", buffer, 60);
795 if (buffer[0])
796 printk("(Firmware %s)", buffer);
797 if (prom_getbool(qpti_node, "differential"))
798 qpti->differential = 1;
799 }
800
801 printk (" [%s Wide, using %s interface]\n",
802 (qpti->ultra ? "Ultra" : "Fast"),
803 (qpti->differential ? "differential" : "single ended"));
804
805 nqptis_in_use++;
806 }
807 }
808 if (nqptis)
809 printk("QPTI: Total of %d PTI Qlogic/ISP hosts found, %d actually in use.\n",
810 nqptis, nqptis_in_use);
811 qptis_running = nqptis_in_use;
812 return nqptis;
813 }
814
815 int qlogicpti_release(struct Scsi_Host *host)
816 {
817 struct qlogicpti *qpti = (struct qlogicpti *) host->hostdata;
818 struct qlogicpti_regs *qregs = qpti->qregs;
819
820 /* Shut up the card. */
821 qregs->sbus_ctrl = 0;
822
823 /* Free IRQ handler and unmap Qlogic,ISP and PTI status regs. */
824 free_irq(host->irq, NULL);
825 unmapioaddr((unsigned long)qregs);
826 /* QLGC,isp doesn't have status reg */
827 if (strcmp (qpti->prom_name, "QLGC,isp"))
828 unmapioaddr((unsigned long)qpti->sreg);
829
830 return 0;
831 }
832
833 const char *qlogicpti_info(struct Scsi_Host *host)
834 {
835 static char buf[80];
836 struct qlogicpti *qpti = (struct qlogicpti *) host->hostdata;
837
838 sprintf(buf, "PTI Qlogic,ISP SBUS SCSI irq %s regs at %08lx",
839 __irq_itoa(qpti->qhost->irq), (unsigned long) qpti->qregs);
840 return buf;
841 }
842
843 /* I am a certified frobtronicist. */
844 static inline void marker_frob(struct Command_Entry *cmd)
845 {
846 struct Marker_Entry *marker = (struct Marker_Entry *) cmd;
847
848 memset(marker, 0, sizeof(struct Marker_Entry));
849 marker->hdr.entry_cnt = 1;
850 marker->hdr.entry_type = ENTRY_MARKER;
851 marker->modifier = SYNC_ALL;
852 marker->rsvd = 0;
853 }
854
855 static inline void cmd_frob(struct Command_Entry *cmd, Scsi_Cmnd *Cmnd,
856 struct qlogicpti *qpti)
857 {
858 memset(cmd, 0, sizeof(struct Command_Entry));
859 cmd->hdr.entry_cnt = 1;
860 cmd->hdr.entry_type = ENTRY_COMMAND;
861 cmd->target_id = Cmnd->target;
862 cmd->target_lun = Cmnd->lun;
863 cmd->cdb_length = Cmnd->cmd_len;
864 cmd->control_flags = 0;
865 if(Cmnd->device->tagged_supported) {
866 if(qpti->cmd_count[Cmnd->target] == 0)
867 qpti->tag_ages[Cmnd->target] = jiffies;
868 if((jiffies - qpti->tag_ages[Cmnd->target]) > (5*HZ)) {
869 cmd->control_flags = CFLAG_ORDERED_TAG;
870 qpti->tag_ages[Cmnd->target] = jiffies;
871 } else
872 cmd->control_flags = CFLAG_SIMPLE_TAG;
873 }
874 if((Cmnd->cmnd[0] == WRITE_6) ||
875 (Cmnd->cmnd[0] == WRITE_10) ||
876 (Cmnd->cmnd[0] == WRITE_12))
877 cmd->control_flags |= CFLAG_WRITE;
878 else
879 cmd->control_flags |= CFLAG_READ;
880 cmd->time_out = 30;
881 memcpy(cmd->cdb, Cmnd->cmnd, Cmnd->cmd_len);
882 }
883
884 /* Do it to it baby. */
885 static inline u_int load_cmd(Scsi_Cmnd *Cmnd, struct Command_Entry *cmd,
886 struct qlogicpti *qpti, struct qlogicpti_regs *qregs,
887 u_int in_ptr, u_int out_ptr)
888 {
889 struct dataseg * ds;
890 struct scatterlist *sg;
891 int sg_count = Cmnd->use_sg;
892 int i, n;
893
894 if(sg_count) {
895 mmu_get_scsi_sgl((struct mmu_sglist *)Cmnd->buffer, (Cmnd->use_sg - 1),
896 qpti->qdev->my_bus);
897
898 cmd->segment_cnt = sg_count;
899 sg = (struct scatterlist *) Cmnd->request_buffer;
900 ds = cmd->dataseg;
901
902 /* Fill in first four sg entries: */
903 n = sg_count;
904 if(n > 4)
905 n = 4;
906 for(i = 0; i < n; i++, sg++) {
907 ds[i].d_base = (u_int) sg->dvma_address;
908 ds[i].d_count = (u_int) sg->length;
909 }
910 sg_count -= 4;
911 while(sg_count > 0) {
912 struct Continuation_Entry *cont;
913
914 ++cmd->hdr.entry_cnt;
915 cont = (struct Continuation_Entry *) &qpti->req_cpu[in_ptr];
916 in_ptr = NEXT_REQ_PTR(in_ptr);
917 if(in_ptr == out_ptr) {
918 printk(KERN_EMERG "qlogicpti: Unexpected request queue overflow\n");
919 return -1;
920 }
921 cont->hdr.entry_type = ENTRY_CONTINUATION;
922 cont->hdr.entry_cnt = 0;
923 cont->hdr.sys_def_1 = 0;
924 cont->hdr.flags = 0;
925 cont->reserved = 0;
926 ds = cont->dataseg;
927 n = sg_count;
928 if(n > 7)
929 n = 7;
930 for(i = 0; i < n; i++, sg++) {
931 ds[i].d_base = (u_int) sg->dvma_address;
932 ds[i].d_count = (u_int) sg->length;
933 }
934 sg_count -= n;
935 }
936 } else {
937 /* XXX Casts are extremely gross, but with 64-bit cpu addresses
938 * XXX and 32-bit SBUS DVMA addresses what am I to do? -DaveM
939 */
940 Cmnd->SCp.ptr = (char *)((unsigned long)
941 mmu_get_scsi_one((char *)Cmnd->request_buffer,
942 Cmnd->request_bufflen,
943 qpti->qdev->my_bus));
944
945 cmd->dataseg[0].d_base = (u_int) ((unsigned long)Cmnd->SCp.ptr);
946 cmd->dataseg[0].d_count = Cmnd->request_bufflen;
947 cmd->segment_cnt = 1;
948 }
949
950 /* Committed, record Scsi_Cmd so we can find it later. */
951 cmd->handle = in_ptr;
952 qpti->cmd_slots[in_ptr] = Cmnd;
953
954 qpti->cmd_count[Cmnd->target]++;
955 qregs->mbox4 = in_ptr;
956 qpti->req_in_ptr = in_ptr;
957
958 return in_ptr;
959 }
960
961 static inline void update_can_queue(struct Scsi_Host *host, u_int in_ptr, u_int out_ptr)
962 {
963 /* Temporary workaround until bug is found and fixed (one bug has been found
964 already, but fixing it makes things even worse) -jj */
965 int num_free = QLOGICISP_REQ_QUEUE_LEN - REQ_QUEUE_DEPTH(in_ptr, out_ptr) - 64;
966 host->can_queue = host->host_busy + num_free;
967 host->sg_tablesize = QLOGICISP_MAX_SG(num_free);
968 }
969
970 /*
971 * The middle SCSI layer ensures that queuecommand never gets invoked
972 * concurrently with itself or the interrupt handler (though the
973 * interrupt handler may call this routine as part of
974 * request-completion handling).
975 *
976 * "This code must fly." -davem
977 */
978 int qlogicpti_queuecommand(Scsi_Cmnd *Cmnd, void (*done)(Scsi_Cmnd *))
979 {
980 struct Scsi_Host *host = Cmnd->host;
981 struct qlogicpti *qpti = (struct qlogicpti *) host->hostdata;
982 struct qlogicpti_regs *qregs = qpti->qregs;
983 u_int in_ptr = qpti->req_in_ptr;
984 u_int out_ptr = qregs->mbox4;
985 struct Command_Entry *cmd = (struct Command_Entry *) &qpti->req_cpu[in_ptr];
986
987 Cmnd->scsi_done = done;
988 in_ptr = NEXT_REQ_PTR(in_ptr);
989 if(in_ptr == out_ptr) {
990 printk(KERN_EMERG "qlogicpti%d: request queue overflow\n",qpti->qpti_id);
991
992 /* Unfortunately, unless you use the new EH code, which
993 * we don't, the midlayer will ignore the return value,
994 * which is insane. We pick up the pieces like this.
995 */
996 Cmnd->result = DID_BUS_BUSY;
997 done(Cmnd);
998 return 1;
999 }
1000 if(qpti->send_marker) {
1001 marker_frob(cmd);
1002 qpti->send_marker = 0;
1003 if(NEXT_REQ_PTR(in_ptr) == out_ptr) {
1004 qregs->mbox4 = in_ptr;
1005 qpti->req_in_ptr = in_ptr;
1006 printk(KERN_EMERG "qlogicpti%d: request queue overflow\n",
1007 qpti->qpti_id);
1008
1009 /* Unfortunately, unless you use the new EH code, which
1010 * we don't, the midlayer will ignore the return value,
1011 * which is insane. We pick up the pieces like this.
1012 */
1013 Cmnd->result = DID_BUS_BUSY;
1014 done(Cmnd);
1015 return 1;
1016 }
1017 cmd = (struct Command_Entry *) &qpti->req_cpu[in_ptr];
1018 in_ptr = NEXT_REQ_PTR(in_ptr);
1019 }
1020 cmd_frob(cmd, Cmnd, qpti);
1021 if((in_ptr = load_cmd(Cmnd, cmd, qpti, qregs, in_ptr, out_ptr)) == -1) {
1022 /* Unfortunately, unless you use the new EH code, which
1023 * we don't, the midlayer will ignore the return value,
1024 * which is insane. We pick up the pieces like this.
1025 */
1026 Cmnd->result = DID_BUS_BUSY;
1027 done(Cmnd);
1028 return 1;
1029 }
1030 update_can_queue(host, in_ptr, out_ptr);
1031 return 0;
1032 }
1033
1034 static int qlogicpti_return_status(struct Status_Entry *sts)
1035 {
1036 int host_status = DID_ERROR;
1037
1038 switch(sts->completion_status) {
1039 case CS_COMPLETE:
1040 host_status = DID_OK;
1041 break;
1042 case CS_INCOMPLETE:
1043 if (!(sts->state_flags & SF_GOT_BUS))
1044 host_status = DID_NO_CONNECT;
1045 else if (!(sts->state_flags & SF_GOT_TARGET))
1046 host_status = DID_BAD_TARGET;
1047 else if (!(sts->state_flags & SF_SENT_CDB))
1048 host_status = DID_ERROR;
1049 else if (!(sts->state_flags & SF_TRANSFERRED_DATA))
1050 host_status = DID_ERROR;
1051 else if (!(sts->state_flags & SF_GOT_STATUS))
1052 host_status = DID_ERROR;
1053 else if (!(sts->state_flags & SF_GOT_SENSE))
1054 host_status = DID_ERROR;
1055 break;
1056 case CS_DMA_ERROR:
1057 case CS_TRANSPORT_ERROR:
1058 host_status = DID_ERROR;
1059 break;
1060 case CS_RESET_OCCURRED:
1061 case CS_BUS_RESET:
1062 host_status = DID_RESET;
1063 break;
1064 case CS_ABORTED:
1065 host_status = DID_ABORT;
1066 break;
1067 case CS_TIMEOUT:
1068 host_status = DID_TIME_OUT;
1069 break;
1070 case CS_DATA_OVERRUN:
1071 case CS_COMMAND_OVERRUN:
1072 case CS_STATUS_OVERRUN:
1073 case CS_BAD_MESSAGE:
1074 case CS_NO_MESSAGE_OUT:
1075 case CS_EXT_ID_FAILED:
1076 case CS_IDE_MSG_FAILED:
1077 case CS_ABORT_MSG_FAILED:
1078 case CS_NOP_MSG_FAILED:
1079 case CS_PARITY_ERROR_MSG_FAILED:
1080 case CS_DEVICE_RESET_MSG_FAILED:
1081 case CS_ID_MSG_FAILED:
1082 case CS_UNEXP_BUS_FREE:
1083 host_status = DID_ERROR;
1084 break;
1085 case CS_DATA_UNDERRUN:
1086 host_status = DID_OK;
1087 break;
1088 default:
1089 printk(KERN_EMERG "qlogicpti : unknown completion status 0x%04x\n",
1090 sts->completion_status);
1091 host_status = DID_ERROR;
1092 break;
1093 }
1094
1095 return (sts->scsi_status & STATUS_MASK) | (host_status << 16);
1096 }
1097
1098 static __inline__ int qlogicpti_intr_handler(struct qlogicpti *qpti)
1099 {
1100 Scsi_Cmnd *Cmnd;
1101 struct Status_Entry *sts;
1102 u_int in_ptr, out_ptr;
1103 struct qlogicpti_regs *qregs;
1104
1105 if(!(qpti->qregs->sbus_stat & SBUS_STAT_RINT))
1106 return 0;
1107
1108 qregs = qpti->qregs;
1109
1110 in_ptr = qregs->mbox5;
1111 qregs->hcctrl = HCCTRL_CRIRQ;
1112 if(qregs->sbus_semaphore & SBUS_SEMAPHORE_LCK) {
1113 switch(qregs->mbox0) {
1114 case ASYNC_SCSI_BUS_RESET:
1115 case EXECUTION_TIMEOUT_RESET:
1116 qpti->send_marker = 1;
1117 break;
1118 case INVALID_COMMAND:
1119 case HOST_INTERFACE_ERROR:
1120 case COMMAND_ERROR:
1121 case COMMAND_PARAM_ERROR:
1122 break;
1123 }
1124 qregs->sbus_semaphore = 0;
1125 }
1126
1127 /* This looks like a network driver! */
1128 out_ptr = qpti->res_out_ptr;
1129 while(out_ptr != in_ptr) {
1130 u_int cmd_slot;
1131
1132 sts = (struct Status_Entry *) &qpti->res_cpu[out_ptr];
1133 out_ptr = NEXT_RES_PTR(out_ptr);
1134
1135 /* We store an index in the handle, not the pointer in
1136 * some form. This avoids problems due to the fact
1137 * that the handle provided is only 32-bits. -DaveM
1138 */
1139 cmd_slot = sts->handle;
1140 Cmnd = qpti->cmd_slots[cmd_slot];
1141 qpti->cmd_slots[cmd_slot] = NULL;
1142
1143 if(sts->completion_status == CS_RESET_OCCURRED ||
1144 sts->completion_status == CS_ABORTED ||
1145 (sts->status_flags & STF_BUS_RESET))
1146 qpti->send_marker = 1;
1147
1148 if(sts->state_flags & SF_GOT_SENSE)
1149 memcpy(Cmnd->sense_buffer, sts->req_sense_data,
1150 sizeof(Cmnd->sense_buffer));
1151
1152 if(sts->hdr.entry_type == ENTRY_STATUS)
1153 Cmnd->result = qlogicpti_return_status(sts);
1154 else
1155 Cmnd->result = DID_ERROR << 16;
1156
1157 if(Cmnd->use_sg)
1158 mmu_release_scsi_sgl((struct mmu_sglist *)
1159 Cmnd->buffer,
1160 Cmnd->use_sg - 1,
1161 qpti->qdev->my_bus);
1162 else
1163 mmu_release_scsi_one((__u32)((unsigned long)Cmnd->SCp.ptr),
1164 Cmnd->request_bufflen,
1165 qpti->qdev->my_bus);
1166
1167 qpti->cmd_count[Cmnd->target]--;
1168 qregs->mbox5 = out_ptr;
1169 Cmnd->scsi_done(Cmnd);
1170 }
1171 qpti->res_out_ptr = out_ptr;
1172 return 1;
1173 }
1174
1175 #ifndef __sparc_v9__
1176
1177 static void do_qlogicpti_intr_handler_sun4m(int irq, void *dev_id, struct pt_regs *regs)
1178 {
1179 unsigned long flags;
1180 struct qlogicpti *qpti;
1181 int again;
1182
1183 spin_lock_irqsave(&io_request_lock, flags);
1184 do {
1185 again = 0;
1186 for_each_qlogicpti(qpti)
1187 again |= qlogicpti_intr_handler(qpti);
1188 } while (again);
1189 spin_unlock_irqrestore(&io_request_lock, flags);
1190 }
1191
1192 #endif
1193
1194 static void do_qlogicpti_intr_handler(int irq, void *dev_id, struct pt_regs *regs)
1195 {
1196 unsigned long flags;
1197
1198 spin_lock_irqsave(&io_request_lock, flags);
1199 qlogicpti_intr_handler((struct qlogicpti *)dev_id);
1200 spin_unlock_irqrestore(&io_request_lock, flags);
1201 }
1202
1203 int qlogicpti_abort(Scsi_Cmnd *Cmnd)
1204 {
1205 u_short param[6];
1206 struct Scsi_Host *host = Cmnd->host;
1207 struct qlogicpti *qpti = (struct qlogicpti *) host->hostdata;
1208 int return_status = SCSI_ABORT_SUCCESS;
1209
1210 printk(KERN_WARNING "qlogicpti : Aborting cmd for tgt[%d] lun[%d]\n",
1211 (int)Cmnd->target, (int)Cmnd->lun);
1212 qlogicpti_disable_irqs(qpti->qregs);
1213 param[0] = MBOX_ABORT;
1214 param[1] = (((u_short) Cmnd->target) << 8) | Cmnd->lun;
1215 param[2] = ((unsigned int)((unsigned long)Cmnd)) >> 16;
1216 param[3] = ((unsigned int)((unsigned long)Cmnd)) & 0xffff;
1217 if(qlogicpti_mbox_command(qpti, param, 0) ||
1218 (param[0] != MBOX_COMMAND_COMPLETE)) {
1219 printk(KERN_EMERG "qlogicpti : scsi abort failure: %x\n", param[0]);
1220 return_status = SCSI_ABORT_ERROR;
1221 }
1222 qlogicpti_enable_irqs(qpti->qregs);
1223 return return_status;
1224 }
1225
1226 int qlogicpti_reset(Scsi_Cmnd *Cmnd, unsigned int reset_flags)
1227 {
1228 u_short param[6];
1229 struct Scsi_Host *host = Cmnd->host;
1230 struct qlogicpti *qpti = (struct qlogicpti *) host->hostdata;
1231 int return_status = SCSI_RESET_SUCCESS;
1232
1233 printk(KERN_WARNING "qlogicpti : Resetting SCSI bus!\n");
1234 qlogicpti_disable_irqs(qpti->qregs);
1235 param[0] = MBOX_BUS_RESET;
1236 param[1] = qpti->host_param.bus_reset_delay;
1237 if(qlogicpti_mbox_command(qpti, param, 0) ||
1238 (param[0] != MBOX_COMMAND_COMPLETE)) {
1239 printk(KERN_EMERG "qlogicisp : scsi bus reset failure: %x\n", param[0]);
1240 return_status = SCSI_RESET_ERROR;
1241 }
1242 qlogicpti_enable_irqs(qpti->qregs);
1243 return return_status;
1244 }
1245
1246 #ifdef MODULE
1247 Scsi_Host_Template driver_template = QLOGICPTI;
1248
1249 #include "scsi_module.c"
1250
1251 EXPORT_NO_SYMBOLS;
1252 #endif /* MODULE */
Copy of Dave Jones history.git as used by http://archive.org/details/git-history-of-linux