1 /* qlogicpti.c: Performance Technologies QlogicISP sbus card driver.
3 * Copyright (C) 1996 David S. Miller (davem@caipfs.rutgers.edu)
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.
8 * An even bigger kudos to John Grana at Performance Technologies
9 * for providing me with the hardware to write this driver, you rule
12 * May, 2, 1997: Added support for QLGC,isp --jj
15 #include <linux/kernel.h>
16 #include <linux/delay.h>
17 #include <linux/types.h>
18 #include <linux/string.h>
19 #include <linux/slab.h>
20 #include <linux/blkdev.h>
21 #include <linux/proc_fs.h>
22 #include <linux/stat.h>
23 #include <linux/init.h>
24 #include <linux/spinlock.h>
25 #include <linux/interrupt.h>
27 #include <asm/byteorder.h>
31 #include "qlogicpti.h"
35 #include <asm/system.h>
36 #include <asm/ptrace.h>
37 #include <asm/pgtable.h>
38 #include <asm/oplib.h>
42 #include <linux/module.h>
44 #define MAX_TARGETS 16
45 #define MAX_LUNS 8 /* 32 for 1.31 F/W */
47 #define DEFAULT_LOOP_COUNT 10000
49 #include "qlogicpti_asm.c"
51 static struct qlogicpti *qptichain = NULL;
52 static spinlock_t qptichain_lock = SPIN_LOCK_UNLOCKED;
53 static int qptis_running = 0;
55 #define PACKB(a, b) (((a)<<4)|(b))
57 static 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 */
127 #define MAX_MBOX_COMMAND (sizeof(mbox_param)/sizeof(u_short))
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 QLOGICPTI_REQ_QUEUE_LEN)
133 #define RES_QUEUE_DEPTH(in, out) QUEUE_DEPTH(in, out, RES_QUEUE_LEN)
135 static inline void qlogicpti_enable_irqs(struct qlogicpti *qpti)
137 sbus_writew(SBUS_CTRL_ERIRQ | SBUS_CTRL_GENAB,
138 qpti->qregs + SBUS_CTRL);
141 static inline void qlogicpti_disable_irqs(struct qlogicpti *qpti)
143 sbus_writew(0, qpti->qregs + SBUS_CTRL);
146 static inline void set_sbus_cfg1(struct qlogicpti *qpti)
149 u8 bursts = qpti->bursts;
151 #if 0 /* It appears that at least PTI cards do not support
152 * 64-byte bursts and that setting the B64 bit actually
153 * is a nop and the chip ends up using the smallest burst
156 if (sbus_can_burst64(qpti->sdev) && (bursts & DMA_BURST64)) {
157 val = (SBUS_CFG1_BENAB | SBUS_CFG1_B64);
160 if (bursts & DMA_BURST32) {
161 val = (SBUS_CFG1_BENAB | SBUS_CFG1_B32);
162 } else if (bursts & DMA_BURST16) {
163 val = (SBUS_CFG1_BENAB | SBUS_CFG1_B16);
164 } else if (bursts & DMA_BURST8) {
165 val = (SBUS_CFG1_BENAB | SBUS_CFG1_B8);
167 val = 0; /* No sbus bursts for you... */
169 sbus_writew(val, qpti->qregs + SBUS_CFG1);
172 static int qlogicpti_mbox_command(struct qlogicpti *qpti, u_short param[], int force)
177 if (mbox_param[param[0]] == 0)
180 /* Set SBUS semaphore. */
181 tmp = sbus_readw(qpti->qregs + SBUS_SEMAPHORE);
182 tmp |= SBUS_SEMAPHORE_LCK;
183 sbus_writew(tmp, qpti->qregs + SBUS_SEMAPHORE);
185 /* Wait for host IRQ bit to clear. */
186 loop_count = DEFAULT_LOOP_COUNT;
187 while (--loop_count && (sbus_readw(qpti->qregs + HCCTRL) & HCCTRL_HIRQ)) {
192 printk(KERN_EMERG "qlogicpti: mbox_command loop timeout #1\n");
194 /* Write mailbox command registers. */
195 switch (mbox_param[param[0]] >> 4) {
196 case 6: sbus_writew(param[5], qpti->qregs + MBOX5);
197 case 5: sbus_writew(param[4], qpti->qregs + MBOX4);
198 case 4: sbus_writew(param[3], qpti->qregs + MBOX3);
199 case 3: sbus_writew(param[2], qpti->qregs + MBOX2);
200 case 2: sbus_writew(param[1], qpti->qregs + MBOX1);
201 case 1: sbus_writew(param[0], qpti->qregs + MBOX0);
204 /* Clear RISC interrupt. */
205 tmp = sbus_readw(qpti->qregs + HCCTRL);
207 sbus_writew(tmp, qpti->qregs + HCCTRL);
209 /* Clear SBUS semaphore. */
210 sbus_writew(0, qpti->qregs + SBUS_SEMAPHORE);
212 /* Set HOST interrupt. */
213 tmp = sbus_readw(qpti->qregs + HCCTRL);
215 sbus_writew(tmp, qpti->qregs + HCCTRL);
217 /* Wait for HOST interrupt clears. */
218 loop_count = DEFAULT_LOOP_COUNT;
219 while (--loop_count &&
220 (sbus_readw(qpti->qregs + HCCTRL) & HCCTRL_CRIRQ))
223 printk(KERN_EMERG "qlogicpti: mbox_command[%04x] loop timeout #2\n",
226 /* Wait for SBUS semaphore to get set. */
227 loop_count = DEFAULT_LOOP_COUNT;
228 while (--loop_count &&
229 !(sbus_readw(qpti->qregs + SBUS_SEMAPHORE) & SBUS_SEMAPHORE_LCK)) {
232 /* Workaround for some buggy chips. */
233 if (sbus_readw(qpti->qregs + MBOX0) & 0x4000)
237 printk(KERN_EMERG "qlogicpti: mbox_command[%04x] loop timeout #3\n",
240 /* Wait for MBOX busy condition to go away. */
241 loop_count = DEFAULT_LOOP_COUNT;
242 while (--loop_count && (sbus_readw(qpti->qregs + MBOX0) == 0x04))
245 printk(KERN_EMERG "qlogicpti: mbox_command[%04x] loop timeout #4\n",
248 /* Read back output parameters. */
249 switch (mbox_param[param[0]] & 0xf) {
250 case 6: param[5] = sbus_readw(qpti->qregs + MBOX5);
251 case 5: param[4] = sbus_readw(qpti->qregs + MBOX4);
252 case 4: param[3] = sbus_readw(qpti->qregs + MBOX3);
253 case 3: param[2] = sbus_readw(qpti->qregs + MBOX2);
254 case 2: param[1] = sbus_readw(qpti->qregs + MBOX1);
255 case 1: param[0] = sbus_readw(qpti->qregs + MBOX0);
258 /* Clear RISC interrupt. */
259 tmp = sbus_readw(qpti->qregs + HCCTRL);
261 sbus_writew(tmp, qpti->qregs + HCCTRL);
263 /* Release SBUS semaphore. */
264 tmp = sbus_readw(qpti->qregs + SBUS_SEMAPHORE);
265 tmp &= ~(SBUS_SEMAPHORE_LCK);
266 sbus_writew(tmp, qpti->qregs + SBUS_SEMAPHORE);
272 static inline void qlogicpti_set_hostdev_defaults(struct qlogicpti *qpti)
276 qpti->host_param.initiator_scsi_id = qpti->scsi_id;
277 qpti->host_param.bus_reset_delay = 3;
278 qpti->host_param.retry_count = 0;
279 qpti->host_param.retry_delay = 5;
280 qpti->host_param.async_data_setup_time = 3;
281 qpti->host_param.req_ack_active_negation = 1;
282 qpti->host_param.data_line_active_negation = 1;
283 qpti->host_param.data_dma_burst_enable = 1;
284 qpti->host_param.command_dma_burst_enable = 1;
285 qpti->host_param.tag_aging = 8;
286 qpti->host_param.selection_timeout = 250;
287 qpti->host_param.max_queue_depth = 256;
289 for(i = 0; i < MAX_TARGETS; i++) {
291 * disconnect, parity, arq, reneg on reset, and, oddly enough
292 * tags...the midlayer's notion of tagged support has to match
293 * our device settings, and since we base whether we enable a
294 * tag on a per-cmnd basis upon what the midlayer sez, we
295 * actually enable the capability here.
297 qpti->dev_param[i].device_flags = 0xcd;
298 qpti->dev_param[i].execution_throttle = 16;
300 qpti->dev_param[i].synchronous_period = 12;
301 qpti->dev_param[i].synchronous_offset = 8;
303 qpti->dev_param[i].synchronous_period = 25;
304 qpti->dev_param[i].synchronous_offset = 12;
306 qpti->dev_param[i].device_enable = 1;
308 /* this is very important to set! */
309 qpti->sbits = 1 << qpti->scsi_id;
312 static int qlogicpti_reset_hardware(struct Scsi_Host *host)
314 struct qlogicpti *qpti = (struct qlogicpti *) host->hostdata;
316 unsigned short risc_code_addr;
320 risc_code_addr = 0x1000; /* all load addresses are at 0x1000 */
322 spin_lock_irqsave(host->host_lock, flags);
324 sbus_writew(HCCTRL_PAUSE, qpti->qregs + HCCTRL);
326 /* Only reset the scsi bus if it is not free. */
327 if (sbus_readw(qpti->qregs + CPU_PCTRL) & CPU_PCTRL_BSY) {
328 sbus_writew(CPU_ORIDE_RMOD, qpti->qregs + CPU_ORIDE);
329 sbus_writew(CPU_CMD_BRESET, qpti->qregs + CPU_CMD);
333 sbus_writew(SBUS_CTRL_RESET, qpti->qregs + SBUS_CTRL);
334 sbus_writew((DMA_CTRL_CCLEAR | DMA_CTRL_CIRQ), qpti->qregs + CMD_DMA_CTRL);
335 sbus_writew((DMA_CTRL_CCLEAR | DMA_CTRL_CIRQ), qpti->qregs + DATA_DMA_CTRL);
337 loop_count = DEFAULT_LOOP_COUNT;
338 while (--loop_count && ((sbus_readw(qpti->qregs + MBOX0) & 0xff) == 0x04))
341 printk(KERN_EMERG "qlogicpti: reset_hardware loop timeout\n");
343 sbus_writew(HCCTRL_PAUSE, qpti->qregs + HCCTRL);
345 qlogicpti_enable_irqs(qpti);
347 if (sbus_readw(qpti->qregs + RISC_PSR) & RISC_PSR_ULTRA) {
349 sbus_writew((RISC_MTREG_P0ULTRA | RISC_MTREG_P1ULTRA),
350 qpti->qregs + RISC_MTREG);
353 sbus_writew((RISC_MTREG_P0DFLT | RISC_MTREG_P1DFLT),
354 qpti->qregs + RISC_MTREG);
357 /* reset adapter and per-device default values. */
358 /* do it after finding out whether we're ultra mode capable */
359 qlogicpti_set_hostdev_defaults(qpti);
361 /* Release the RISC processor. */
362 sbus_writew(HCCTRL_REL, qpti->qregs + HCCTRL);
364 /* Get RISC to start executing the firmware code. */
365 param[0] = MBOX_EXEC_FIRMWARE;
366 param[1] = risc_code_addr;
367 if (qlogicpti_mbox_command(qpti, param, 1)) {
368 printk(KERN_EMERG "qlogicpti%d: Cannot execute ISP firmware.\n",
370 spin_unlock_irqrestore(host->host_lock, flags);
374 /* Set initiator scsi ID. */
375 param[0] = MBOX_SET_INIT_SCSI_ID;
376 param[1] = qpti->host_param.initiator_scsi_id;
377 if (qlogicpti_mbox_command(qpti, param, 1) ||
378 (param[0] != MBOX_COMMAND_COMPLETE)) {
379 printk(KERN_EMERG "qlogicpti%d: Cannot set initiator SCSI ID.\n",
381 spin_unlock_irqrestore(host->host_lock, flags);
385 /* Initialize state of the queues, both hw and sw. */
386 qpti->req_in_ptr = qpti->res_out_ptr = 0;
388 param[0] = MBOX_INIT_RES_QUEUE;
389 param[1] = RES_QUEUE_LEN + 1;
390 param[2] = (u_short) (qpti->res_dvma >> 16);
391 param[3] = (u_short) (qpti->res_dvma & 0xffff);
392 param[4] = param[5] = 0;
393 if (qlogicpti_mbox_command(qpti, param, 1)) {
394 printk(KERN_EMERG "qlogicpti%d: Cannot init response queue.\n",
396 spin_unlock_irqrestore(host->host_lock, flags);
400 param[0] = MBOX_INIT_REQ_QUEUE;
401 param[1] = QLOGICPTI_REQ_QUEUE_LEN + 1;
402 param[2] = (u_short) (qpti->req_dvma >> 16);
403 param[3] = (u_short) (qpti->req_dvma & 0xffff);
404 param[4] = param[5] = 0;
405 if (qlogicpti_mbox_command(qpti, param, 1)) {
406 printk(KERN_EMERG "qlogicpti%d: Cannot init request queue.\n",
408 spin_unlock_irqrestore(host->host_lock, flags);
412 param[0] = MBOX_SET_RETRY_COUNT;
413 param[1] = qpti->host_param.retry_count;
414 param[2] = qpti->host_param.retry_delay;
415 qlogicpti_mbox_command(qpti, param, 0);
417 param[0] = MBOX_SET_TAG_AGE_LIMIT;
418 param[1] = qpti->host_param.tag_aging;
419 qlogicpti_mbox_command(qpti, param, 0);
421 for (i = 0; i < MAX_TARGETS; i++) {
422 param[0] = MBOX_GET_DEV_QUEUE_PARAMS;
424 qlogicpti_mbox_command(qpti, param, 0);
427 param[0] = MBOX_GET_FIRMWARE_STATUS;
428 qlogicpti_mbox_command(qpti, param, 0);
430 param[0] = MBOX_SET_SELECT_TIMEOUT;
431 param[1] = qpti->host_param.selection_timeout;
432 qlogicpti_mbox_command(qpti, param, 0);
434 for (i = 0; i < MAX_TARGETS; i++) {
435 param[0] = MBOX_SET_TARGET_PARAMS;
437 param[2] = (qpti->dev_param[i].device_flags << 8);
439 * Since we're now loading 1.31 f/w, force narrow/async.
442 param[3] = 0; /* no offset, we do not have sync mode yet */
443 qlogicpti_mbox_command(qpti, param, 0);
447 * Always (sigh) do an initial bus reset (kicks f/w).
449 param[0] = MBOX_BUS_RESET;
450 param[1] = qpti->host_param.bus_reset_delay;
451 qlogicpti_mbox_command(qpti, param, 0);
452 qpti->send_marker = 1;
454 spin_unlock_irqrestore(host->host_lock, flags);
458 #define PTI_RESET_LIMIT 400
460 static int __init qlogicpti_load_firmware(struct qlogicpti *qpti)
462 struct Scsi_Host *host = qpti->qhost;
463 unsigned short csum = 0;
464 unsigned short param[6];
465 unsigned short *risc_code, risc_code_addr, risc_code_length;
469 risc_code = &sbus_risc_code01[0];
470 risc_code_addr = 0x1000; /* all f/w modules load at 0x1000 */
471 risc_code_length = sbus_risc_code_length01;
473 spin_lock_irqsave(host->host_lock, flags);
475 /* Verify the checksum twice, one before loading it, and once
476 * afterwards via the mailbox commands.
478 for (i = 0; i < risc_code_length; i++)
479 csum += risc_code[i];
481 spin_unlock_irqrestore(host->host_lock, flags);
482 printk(KERN_EMERG "qlogicpti%d: Aieee, firmware checksum failed!",
486 sbus_writew(SBUS_CTRL_RESET, qpti->qregs + SBUS_CTRL);
487 sbus_writew((DMA_CTRL_CCLEAR | DMA_CTRL_CIRQ), qpti->qregs + CMD_DMA_CTRL);
488 sbus_writew((DMA_CTRL_CCLEAR | DMA_CTRL_CIRQ), qpti->qregs + DATA_DMA_CTRL);
489 timeout = PTI_RESET_LIMIT;
490 while (--timeout && (sbus_readw(qpti->qregs + SBUS_CTRL) & SBUS_CTRL_RESET))
493 spin_unlock_irqrestore(host->host_lock, flags);
494 printk(KERN_EMERG "qlogicpti%d: Cannot reset the ISP.", qpti->qpti_id);
498 sbus_writew(HCCTRL_RESET, qpti->qregs + HCCTRL);
501 sbus_writew((SBUS_CTRL_GENAB | SBUS_CTRL_ERIRQ), qpti->qregs + SBUS_CTRL);
503 sbus_writew(0, qpti->qregs + SBUS_SEMAPHORE);
505 if (sbus_readw(qpti->qregs + RISC_PSR) & RISC_PSR_ULTRA) {
507 sbus_writew((RISC_MTREG_P0ULTRA | RISC_MTREG_P1ULTRA),
508 qpti->qregs + RISC_MTREG);
511 sbus_writew((RISC_MTREG_P0DFLT | RISC_MTREG_P1DFLT),
512 qpti->qregs + RISC_MTREG);
515 sbus_writew(HCCTRL_REL, qpti->qregs + HCCTRL);
517 /* Pin lines are only stable while RISC is paused. */
518 sbus_writew(HCCTRL_PAUSE, qpti->qregs + HCCTRL);
519 if (sbus_readw(qpti->qregs + CPU_PDIFF) & CPU_PDIFF_MODE)
520 qpti->differential = 1;
522 qpti->differential = 0;
523 sbus_writew(HCCTRL_REL, qpti->qregs + HCCTRL);
525 /* This shouldn't be necessary- we've reset things so we should be
526 running from the ROM now.. */
528 param[0] = MBOX_STOP_FIRMWARE;
529 param[1] = param[2] = param[3] = param[4] = param[5] = 0;
530 if (qlogicpti_mbox_command(qpti, param, 1)) {
531 printk(KERN_EMERG "qlogicpti%d: Cannot stop firmware for reload.\n",
533 spin_unlock_irqrestore(host->host_lock, flags);
538 for (i = 0; i < risc_code_length; i++) {
539 param[0] = MBOX_WRITE_RAM_WORD;
540 param[1] = risc_code_addr + i;
541 param[2] = risc_code[i];
542 if (qlogicpti_mbox_command(qpti, param, 1) ||
543 param[0] != MBOX_COMMAND_COMPLETE) {
544 printk("qlogicpti%d: Firmware dload failed, I'm bolixed!\n",
546 spin_unlock_irqrestore(host->host_lock, flags);
551 /* Reset the ISP again. */
552 sbus_writew(HCCTRL_RESET, qpti->qregs + HCCTRL);
555 qlogicpti_enable_irqs(qpti);
556 sbus_writew(0, qpti->qregs + SBUS_SEMAPHORE);
557 sbus_writew(HCCTRL_REL, qpti->qregs + HCCTRL);
559 /* Ask ISP to verify the checksum of the new code. */
560 param[0] = MBOX_VERIFY_CHECKSUM;
561 param[1] = risc_code_addr;
562 if (qlogicpti_mbox_command(qpti, param, 1) ||
563 (param[0] != MBOX_COMMAND_COMPLETE)) {
564 printk(KERN_EMERG "qlogicpti%d: New firmware csum failure!\n",
566 spin_unlock_irqrestore(host->host_lock, flags);
570 /* Start using newly downloaded firmware. */
571 param[0] = MBOX_EXEC_FIRMWARE;
572 param[1] = risc_code_addr;
573 qlogicpti_mbox_command(qpti, param, 1);
575 param[0] = MBOX_ABOUT_FIRMWARE;
576 if (qlogicpti_mbox_command(qpti, param, 1) ||
577 (param[0] != MBOX_COMMAND_COMPLETE)) {
578 printk(KERN_EMERG "qlogicpti%d: AboutFirmware cmd fails.\n",
580 spin_unlock_irqrestore(host->host_lock, flags);
584 /* Snag the major and minor revisions from the result. */
585 qpti->fware_majrev = param[1];
586 qpti->fware_minrev = param[2];
587 qpti->fware_micrev = param[3];
589 /* Set the clock rate */
590 param[0] = MBOX_SET_CLOCK_RATE;
591 param[1] = qpti->clock;
592 if (qlogicpti_mbox_command(qpti, param, 1) ||
593 (param[0] != MBOX_COMMAND_COMPLETE)) {
594 printk(KERN_EMERG "qlogicpti%d: could not set clock rate.\n",
596 spin_unlock_irqrestore(host->host_lock, flags);
600 if (qpti->is_pti != 0) {
601 /* Load scsi initiator ID and interrupt level into sbus static ram. */
602 param[0] = MBOX_WRITE_RAM_WORD;
604 param[2] = (unsigned short) qpti->scsi_id;
605 qlogicpti_mbox_command(qpti, param, 1);
607 param[0] = MBOX_WRITE_RAM_WORD;
609 param[2] = (unsigned short) 3;
610 qlogicpti_mbox_command(qpti, param, 1);
613 spin_unlock_irqrestore(host->host_lock, flags);
617 static int qlogicpti_verify_tmon(struct qlogicpti *qpti)
619 int curstat = sbus_readb(qpti->sreg);
622 if (!(curstat & SREG_FUSE) && (qpti->swsreg & SREG_FUSE))
623 printk("qlogicpti%d: Fuse returned to normal state.\n", qpti->qpti_id);
624 if (!(curstat & SREG_TPOWER) && (qpti->swsreg & SREG_TPOWER))
625 printk("qlogicpti%d: termpwr back to normal state.\n", qpti->qpti_id);
626 if (curstat != qpti->swsreg) {
628 if (curstat & SREG_FUSE) {
630 printk("qlogicpti%d: Fuse is open!\n", qpti->qpti_id);
632 if (curstat & SREG_TPOWER) {
634 printk("qlogicpti%d: termpwr failure\n", qpti->qpti_id);
636 if (qpti->differential &&
637 (curstat & SREG_DSENSE) != SREG_DSENSE) {
639 printk("qlogicpti%d: You have a single ended device on a "
640 "differential bus! Please fix!\n", qpti->qpti_id);
642 qpti->swsreg = curstat;
648 static irqreturn_t qpti_intr(int irq, void *dev_id, struct pt_regs *regs);
650 static void __init qpti_chain_add(struct qlogicpti *qpti)
652 spin_lock_irq(&qptichain_lock);
653 if (qptichain != NULL) {
654 struct qlogicpti *qlink = qptichain;
663 spin_unlock_irq(&qptichain_lock);
666 static void __init qpti_chain_del(struct qlogicpti *qpti)
668 spin_lock_irq(&qptichain_lock);
669 if (qptichain == qpti) {
670 qptichain = qpti->next;
672 struct qlogicpti *qlink = qptichain;
673 while(qlink->next != qpti)
675 qlink->next = qpti->next;
678 spin_unlock_irq(&qptichain_lock);
681 static int __init qpti_map_regs(struct qlogicpti *qpti)
683 struct sbus_dev *sdev = qpti->sdev;
685 qpti->qregs = sbus_ioremap(&sdev->resource[0], 0,
686 sdev->reg_addrs[0].reg_size,
689 printk("PTI: Qlogic/ISP registers are unmappable\n");
693 qpti->sreg = sbus_ioremap(&sdev->resource[0], (16 * 4096),
694 sizeof(unsigned char),
695 "PTI Qlogic/ISP statreg");
697 printk("PTI: Qlogic/ISP status register is unmappable\n");
704 static int __init qpti_register_irq(struct qlogicpti *qpti)
706 struct sbus_dev *sdev = qpti->sdev;
708 qpti->qhost->irq = qpti->irq = sdev->irqs[0];
710 /* We used to try various overly-clever things to
711 * reduce the interrupt processing overhead on
712 * sun4c/sun4m when multiple PTI's shared the
713 * same IRQ. It was too complex and messy to
716 if (request_irq(qpti->irq, qpti_intr,
717 SA_SHIRQ, "Qlogic/PTI", qpti))
720 printk("qpti%d: IRQ %s ", qpti->qpti_id, __irq_itoa(qpti->irq));
725 printk("qpti%d: Cannot acquire irq line\n", qpti->qpti_id);
729 static void __init qpti_get_scsi_id(struct qlogicpti *qpti)
731 qpti->scsi_id = prom_getintdefault(qpti->prom_node,
734 if (qpti->scsi_id == -1)
735 qpti->scsi_id = prom_getintdefault(qpti->prom_node,
738 if (qpti->scsi_id == -1)
740 prom_getintdefault(qpti->sdev->bus->prom_node,
741 "scsi-initiator-id", 7);
742 qpti->qhost->this_id = qpti->scsi_id;
743 qpti->qhost->max_sectors = 64;
745 printk("SCSI ID %d ", qpti->scsi_id);
748 static void qpti_get_bursts(struct qlogicpti *qpti)
750 struct sbus_dev *sdev = qpti->sdev;
753 bursts = prom_getintdefault(qpti->prom_node, "burst-sizes", 0xff);
754 bmask = prom_getintdefault(sdev->bus->prom_node,
755 "burst-sizes", 0xff);
758 if (bursts == 0xff ||
759 (bursts & DMA_BURST16) == 0 ||
760 (bursts & DMA_BURST32) == 0)
761 bursts = (DMA_BURST32 - 1);
763 qpti->bursts = bursts;
766 static void qpti_get_clock(struct qlogicpti *qpti)
770 /* Check for what the clock input to this card is.
773 cfreq = prom_getintdefault(qpti->prom_node,"clock-frequency",40000000);
774 qpti->clock = (cfreq + 500000)/1000000;
775 if (qpti->clock == 0) /* bullshit */
779 /* The request and response queues must each be aligned
780 * on a page boundary.
782 static int __init qpti_map_queues(struct qlogicpti *qpti)
784 struct sbus_dev *sdev = qpti->sdev;
786 #define QSIZE(entries) (((entries) + 1) * QUEUE_ENTRY_LEN)
787 qpti->res_cpu = sbus_alloc_consistent(sdev,
788 QSIZE(RES_QUEUE_LEN),
790 if (qpti->res_cpu == NULL ||
791 qpti->res_dvma == 0) {
792 printk("QPTI: Cannot map response queue.\n");
796 qpti->req_cpu = sbus_alloc_consistent(sdev,
797 QSIZE(QLOGICPTI_REQ_QUEUE_LEN),
799 if (qpti->req_cpu == NULL ||
800 qpti->req_dvma == 0) {
801 sbus_free_consistent(sdev, QSIZE(RES_QUEUE_LEN),
802 qpti->res_cpu, qpti->res_dvma);
803 printk("QPTI: Cannot map request queue.\n");
806 memset(qpti->res_cpu, 0, QSIZE(RES_QUEUE_LEN));
807 memset(qpti->req_cpu, 0, QSIZE(QLOGICPTI_REQ_QUEUE_LEN));
811 /* Detect all PTI Qlogic ISP's in the machine. */
812 static int __init qlogicpti_detect(Scsi_Host_Template *tpnt)
814 struct qlogicpti *qpti;
815 struct Scsi_Host *qpti_host;
816 struct sbus_bus *sbus;
817 struct sbus_dev *sdev;
818 int nqptis = 0, nqptis_in_use = 0;
820 tpnt->proc_name = "qlogicpti";
821 for_each_sbus(sbus) {
822 for_each_sbusdev(sdev, sbus) {
823 /* Is this a red snapper? */
824 if (strcmp(sdev->prom_name, "ptisp") &&
825 strcmp(sdev->prom_name, "PTI,ptisp") &&
826 strcmp(sdev->prom_name, "QLGC,isp") &&
827 strcmp(sdev->prom_name, "SUNW,isp"))
830 /* Sometimes Antares cards come up not completely
831 * setup, and we get a report of a zero IRQ.
832 * Skip over them in such cases so we survive.
834 if (sdev->irqs[0] == 0) {
835 printk("qpti%d: Adapter reports no interrupt, "
836 "skipping over this card.", nqptis);
840 /* Yep, register and allocate software state. */
841 qpti_host = scsi_register(tpnt, sizeof(struct qlogicpti));
843 printk("QPTI: Cannot register PTI Qlogic ISP SCSI host");
846 qpti = (struct qlogicpti *) qpti_host->hostdata;
848 /* We are wide capable, 16 targets. */
849 qpti_host->max_id = MAX_TARGETS;
851 /* Setup back pointers and misc. state. */
852 qpti->qhost = qpti_host;
854 qpti->qpti_id = nqptis++;
855 qpti->prom_node = sdev->prom_node;
856 prom_getstring(qpti->prom_node, "name",
858 sizeof(qpti->prom_name));
860 /* This is not correct, actually. There's a switch
861 * on the PTI cards that put them into "emulation"
862 * mode- i.e., report themselves as QLGC,isp
863 * instead of PTI,ptisp. The only real substantive
864 * difference between non-pti and pti cards is
865 * the tmon register. Which is possibly even
866 * there for Qlogic cards, but non-functional.
868 qpti->is_pti = (strcmp (qpti->prom_name, "QLGC,isp") != 0);
870 qpti_chain_add(qpti);
871 if (qpti_map_regs(qpti) < 0)
874 if (qpti_register_irq(qpti) < 0)
875 goto fail_unmap_regs;
877 qpti_get_scsi_id(qpti);
878 qpti_get_bursts(qpti);
879 qpti_get_clock(qpti);
881 /* Clear out Scsi_Cmnd array. */
882 memset(qpti->cmd_slots, 0, sizeof(qpti->cmd_slots));
884 if (qpti_map_queues(qpti) < 0)
887 /* Load the firmware. */
888 if (qlogicpti_load_firmware(qpti))
889 goto fail_unmap_queues;
891 /* Check the PTI status reg. */
892 if (qlogicpti_verify_tmon(qpti))
893 goto fail_unmap_queues;
896 /* Reset the ISP and init res/req queues. */
897 if (qlogicpti_reset_hardware(qpti_host))
898 goto fail_unmap_queues;
900 printk("(Firmware v%d.%d.%d)", qpti->fware_majrev,
901 qpti->fware_minrev, qpti->fware_micrev);
905 prom_getstring (qpti->prom_node,
906 "isp-fcode", buffer, 60);
908 printk("(Firmware %s)", buffer);
909 if (prom_getbool(qpti->prom_node, "differential"))
910 qpti->differential = 1;
913 printk (" [%s Wide, using %s interface]\n",
914 (qpti->ultra ? "Ultra" : "Fast"),
915 (qpti->differential ? "differential" : "single ended"));
921 #define QSIZE(entries) (((entries) + 1) * QUEUE_ENTRY_LEN)
922 sbus_free_consistent(qpti->sdev,
923 QSIZE(RES_QUEUE_LEN),
924 qpti->res_cpu, qpti->res_dvma);
925 sbus_free_consistent(qpti->sdev,
926 QSIZE(QLOGICPTI_REQ_QUEUE_LEN),
927 qpti->req_cpu, qpti->req_dvma);
930 free_irq(qpti->irq, qpti);
933 sbus_iounmap(qpti->qregs,
934 qpti->sdev->reg_addrs[0].reg_size);
936 sbus_iounmap(qpti->sreg, sizeof(unsigned char));
938 qpti_chain_del(qpti);
939 scsi_unregister(qpti->qhost);
943 printk("QPTI: Total of %d PTI Qlogic/ISP hosts found, %d actually in use.\n",
944 nqptis, nqptis_in_use);
945 qptis_running = nqptis_in_use;
949 static int qlogicpti_release(struct Scsi_Host *host)
951 struct qlogicpti *qpti = (struct qlogicpti *) host->hostdata;
953 /* Remove visibility from IRQ handlers. */
954 qpti_chain_del(qpti);
956 /* Shut up the card. */
957 sbus_writew(0, qpti->qregs + SBUS_CTRL);
959 /* Free IRQ handler and unmap Qlogic,ISP and PTI status regs. */
960 free_irq(qpti->irq, qpti);
962 #define QSIZE(entries) (((entries) + 1) * QUEUE_ENTRY_LEN)
963 sbus_free_consistent(qpti->sdev,
964 QSIZE(RES_QUEUE_LEN),
965 qpti->res_cpu, qpti->res_dvma);
966 sbus_free_consistent(qpti->sdev,
967 QSIZE(QLOGICPTI_REQ_QUEUE_LEN),
968 qpti->req_cpu, qpti->req_dvma);
971 sbus_iounmap(qpti->qregs, qpti->sdev->reg_addrs[0].reg_size);
973 sbus_iounmap(qpti->sreg, sizeof(unsigned char));
978 const char *qlogicpti_info(struct Scsi_Host *host)
981 struct qlogicpti *qpti = (struct qlogicpti *) host->hostdata;
983 sprintf(buf, "PTI Qlogic,ISP SBUS SCSI irq %s regs at %lx",
984 __irq_itoa(qpti->qhost->irq), qpti->qregs);
988 /* I am a certified frobtronicist. */
989 static inline void marker_frob(struct Command_Entry *cmd)
991 struct Marker_Entry *marker = (struct Marker_Entry *) cmd;
993 memset(marker, 0, sizeof(struct Marker_Entry));
994 marker->hdr.entry_cnt = 1;
995 marker->hdr.entry_type = ENTRY_MARKER;
996 marker->modifier = SYNC_ALL;
1000 static inline void cmd_frob(struct Command_Entry *cmd, Scsi_Cmnd *Cmnd,
1001 struct qlogicpti *qpti)
1003 memset(cmd, 0, sizeof(struct Command_Entry));
1004 cmd->hdr.entry_cnt = 1;
1005 cmd->hdr.entry_type = ENTRY_COMMAND;
1006 cmd->target_id = Cmnd->device->id;
1007 cmd->target_lun = Cmnd->device->lun;
1008 cmd->cdb_length = Cmnd->cmd_len;
1009 cmd->control_flags = 0;
1010 if (Cmnd->device->tagged_supported) {
1011 if (qpti->cmd_count[Cmnd->device->id] == 0)
1012 qpti->tag_ages[Cmnd->device->id] = jiffies;
1013 if ((jiffies - qpti->tag_ages[Cmnd->device->id]) > (5*HZ)) {
1014 cmd->control_flags = CFLAG_ORDERED_TAG;
1015 qpti->tag_ages[Cmnd->device->id] = jiffies;
1017 cmd->control_flags = CFLAG_SIMPLE_TAG;
1019 if ((Cmnd->cmnd[0] == WRITE_6) ||
1020 (Cmnd->cmnd[0] == WRITE_10) ||
1021 (Cmnd->cmnd[0] == WRITE_12))
1022 cmd->control_flags |= CFLAG_WRITE;
1024 cmd->control_flags |= CFLAG_READ;
1026 memcpy(cmd->cdb, Cmnd->cmnd, Cmnd->cmd_len);
1029 /* Do it to it baby. */
1030 static inline int load_cmd(Scsi_Cmnd *Cmnd, struct Command_Entry *cmd,
1031 struct qlogicpti *qpti, u_int in_ptr, u_int out_ptr)
1034 struct scatterlist *sg;
1040 sg = (struct scatterlist *) Cmnd->buffer;
1041 sg_count = sbus_map_sg(qpti->sdev, sg, Cmnd->use_sg, scsi_to_sbus_dma_dir(Cmnd->sc_data_direction));
1044 cmd->segment_cnt = sg_count;
1046 /* Fill in first four sg entries: */
1050 for (i = 0; i < n; i++, sg++) {
1051 ds[i].d_base = sg_dma_address(sg);
1052 ds[i].d_count = sg_dma_len(sg);
1055 while (sg_count > 0) {
1056 struct Continuation_Entry *cont;
1058 ++cmd->hdr.entry_cnt;
1059 cont = (struct Continuation_Entry *) &qpti->req_cpu[in_ptr];
1060 in_ptr = NEXT_REQ_PTR(in_ptr);
1061 if (in_ptr == out_ptr)
1064 cont->hdr.entry_type = ENTRY_CONTINUATION;
1065 cont->hdr.entry_cnt = 0;
1066 cont->hdr.sys_def_1 = 0;
1067 cont->hdr.flags = 0;
1073 for (i = 0; i < n; i++, sg++) {
1074 ds[i].d_base = sg_dma_address(sg);
1075 ds[i].d_count = sg_dma_len(sg);
1079 } else if (Cmnd->request_bufflen) {
1080 Cmnd->SCp.ptr = (char *)(unsigned long)
1081 sbus_map_single(qpti->sdev,
1082 Cmnd->request_buffer,
1083 Cmnd->request_bufflen,
1084 scsi_to_sbus_dma_dir(Cmnd->sc_data_direction));
1086 cmd->dataseg[0].d_base = (u32) ((unsigned long)Cmnd->SCp.ptr);
1087 cmd->dataseg[0].d_count = Cmnd->request_bufflen;
1088 cmd->segment_cnt = 1;
1090 cmd->dataseg[0].d_base = 0;
1091 cmd->dataseg[0].d_count = 0;
1092 cmd->segment_cnt = 1; /* Shouldn't this be 0? */
1095 /* Committed, record Scsi_Cmd so we can find it later. */
1096 cmd->handle = in_ptr;
1097 qpti->cmd_slots[in_ptr] = Cmnd;
1099 qpti->cmd_count[Cmnd->device->id]++;
1100 sbus_writew(in_ptr, qpti->qregs + MBOX4);
1101 qpti->req_in_ptr = in_ptr;
1106 static inline void update_can_queue(struct Scsi_Host *host, u_int in_ptr, u_int out_ptr)
1108 /* Temporary workaround until bug is found and fixed (one bug has been found
1109 already, but fixing it makes things even worse) -jj */
1110 int num_free = QLOGICPTI_REQ_QUEUE_LEN - REQ_QUEUE_DEPTH(in_ptr, out_ptr) - 64;
1111 host->can_queue = host->host_busy + num_free;
1112 host->sg_tablesize = QLOGICPTI_MAX_SG(num_free);
1116 * Until we scan the entire bus with inquiries, go throught this fella...
1118 static void ourdone(Scsi_Cmnd *Cmnd)
1120 struct qlogicpti *qpti = (struct qlogicpti *) Cmnd->device->host->hostdata;
1121 int tgt = Cmnd->device->id;
1122 void (*done) (Scsi_Cmnd *);
1124 /* This grot added by DaveM, blame him for ugliness.
1125 * The issue is that in the 2.3.x driver we use the
1126 * host_scribble portion of the scsi command as a
1127 * completion linked list at interrupt service time,
1128 * so we have to store the done function pointer elsewhere.
1130 done = (void (*)(Scsi_Cmnd *))
1131 (((unsigned long) Cmnd->SCp.Message)
1133 | ((unsigned long) Cmnd->SCp.Status << 32UL)
1137 if ((qpti->sbits & (1 << tgt)) == 0) {
1138 int ok = host_byte(Cmnd->result) == DID_OK;
1139 if (Cmnd->cmnd[0] == 0x12 && ok) {
1142 if (Cmnd->use_sg != 0)
1145 iqd = ((unsigned char *)Cmnd->buffer);
1147 /* tags handled in midlayer */
1148 /* enable sync mode? */
1149 if (iqd[7] & 0x10) {
1150 qpti->dev_param[tgt].device_flags |= 0x10;
1152 qpti->dev_param[tgt].synchronous_offset = 0;
1153 qpti->dev_param[tgt].synchronous_period = 0;
1155 /* are we wide capable? */
1156 if (iqd[7] & 0x20) {
1157 qpti->dev_param[tgt].device_flags |= 0x20;
1159 qpti->sbits |= (1 << tgt);
1161 qpti->sbits |= (1 << tgt);
1167 static int qlogicpti_queuecommand(Scsi_Cmnd *Cmnd, void (*done)(Scsi_Cmnd *));
1169 static int qlogicpti_queuecommand_slow(Scsi_Cmnd *Cmnd,
1170 void (*done)(Scsi_Cmnd *))
1172 struct qlogicpti *qpti = (struct qlogicpti *) Cmnd->device->host->hostdata;
1175 * done checking this host adapter?
1176 * If not, then rewrite the command
1177 * to finish through ourdone so we
1178 * can peek at Inquiry data results.
1180 if (qpti->sbits && qpti->sbits != 0xffff) {
1181 /* See above about in ourdone this ugliness... */
1182 Cmnd->SCp.Message = ((unsigned long)done) & 0xffffffff;
1183 #ifdef CONFIG_SPARC64
1184 Cmnd->SCp.Status = ((unsigned long)done >> 32UL) & 0xffffffff;
1186 return qlogicpti_queuecommand(Cmnd, ourdone);
1190 * We've peeked at all targets for this bus- time
1191 * to set parameters for devices for real now.
1193 if (qpti->sbits == 0xffff) {
1195 for(i = 0; i < MAX_TARGETS; i++) {
1197 param[0] = MBOX_SET_TARGET_PARAMS;
1198 param[1] = (i << 8);
1199 param[2] = (qpti->dev_param[i].device_flags << 8);
1200 if (qpti->dev_param[i].device_flags & 0x10) {
1201 param[3] = (qpti->dev_param[i].synchronous_offset << 8) |
1202 qpti->dev_param[i].synchronous_period;
1206 (void) qlogicpti_mbox_command(qpti, param, 0);
1209 * set to zero so any traverse through ourdone
1210 * doesn't start the whole process again,
1215 /* check to see if we're done with all adapters... */
1216 for (qpti = qptichain; qpti != NULL; qpti = qpti->next) {
1223 * if we hit the end of the chain w/o finding adapters still
1224 * capability-configuring, then we're done with all adapters
1228 Cmnd->device->host->hostt->queuecommand = qlogicpti_queuecommand;
1230 return qlogicpti_queuecommand(Cmnd, done);
1234 * The middle SCSI layer ensures that queuecommand never gets invoked
1235 * concurrently with itself or the interrupt handler (though the
1236 * interrupt handler may call this routine as part of
1237 * request-completion handling).
1239 * "This code must fly." -davem
1241 static int qlogicpti_queuecommand(Scsi_Cmnd *Cmnd, void (*done)(Scsi_Cmnd *))
1243 struct Scsi_Host *host = Cmnd->device->host;
1244 struct qlogicpti *qpti = (struct qlogicpti *) host->hostdata;
1245 struct Command_Entry *cmd;
1249 Cmnd->scsi_done = done;
1251 in_ptr = qpti->req_in_ptr;
1252 cmd = (struct Command_Entry *) &qpti->req_cpu[in_ptr];
1253 out_ptr = sbus_readw(qpti->qregs + MBOX4);
1254 in_ptr = NEXT_REQ_PTR(in_ptr);
1255 if (in_ptr == out_ptr)
1258 if (qpti->send_marker) {
1260 qpti->send_marker = 0;
1261 if (NEXT_REQ_PTR(in_ptr) == out_ptr) {
1262 sbus_writew(in_ptr, qpti->qregs + MBOX4);
1263 qpti->req_in_ptr = in_ptr;
1266 cmd = (struct Command_Entry *) &qpti->req_cpu[in_ptr];
1267 in_ptr = NEXT_REQ_PTR(in_ptr);
1269 cmd_frob(cmd, Cmnd, qpti);
1270 if ((in_ptr = load_cmd(Cmnd, cmd, qpti, in_ptr, out_ptr)) == -1)
1273 update_can_queue(host, in_ptr, out_ptr);
1278 printk(KERN_EMERG "qlogicpti%d: request queue overflow\n",
1281 /* Unfortunately, unless you use the new EH code, which
1282 * we don't, the midlayer will ignore the return value,
1283 * which is insane. We pick up the pieces like this.
1285 Cmnd->result = DID_BUS_BUSY;
1290 static int qlogicpti_return_status(struct Status_Entry *sts, int id)
1292 int host_status = DID_ERROR;
1294 switch (sts->completion_status) {
1296 host_status = DID_OK;
1299 if (!(sts->state_flags & SF_GOT_BUS))
1300 host_status = DID_NO_CONNECT;
1301 else if (!(sts->state_flags & SF_GOT_TARGET))
1302 host_status = DID_BAD_TARGET;
1303 else if (!(sts->state_flags & SF_SENT_CDB))
1304 host_status = DID_ERROR;
1305 else if (!(sts->state_flags & SF_TRANSFERRED_DATA))
1306 host_status = DID_ERROR;
1307 else if (!(sts->state_flags & SF_GOT_STATUS))
1308 host_status = DID_ERROR;
1309 else if (!(sts->state_flags & SF_GOT_SENSE))
1310 host_status = DID_ERROR;
1313 case CS_TRANSPORT_ERROR:
1314 host_status = DID_ERROR;
1316 case CS_RESET_OCCURRED:
1318 host_status = DID_RESET;
1321 host_status = DID_ABORT;
1324 host_status = DID_TIME_OUT;
1326 case CS_DATA_OVERRUN:
1327 case CS_COMMAND_OVERRUN:
1328 case CS_STATUS_OVERRUN:
1329 case CS_BAD_MESSAGE:
1330 case CS_NO_MESSAGE_OUT:
1331 case CS_EXT_ID_FAILED:
1332 case CS_IDE_MSG_FAILED:
1333 case CS_ABORT_MSG_FAILED:
1334 case CS_NOP_MSG_FAILED:
1335 case CS_PARITY_ERROR_MSG_FAILED:
1336 case CS_DEVICE_RESET_MSG_FAILED:
1337 case CS_ID_MSG_FAILED:
1338 case CS_UNEXP_BUS_FREE:
1339 host_status = DID_ERROR;
1341 case CS_DATA_UNDERRUN:
1342 host_status = DID_OK;
1345 printk(KERN_EMERG "qpti%d: unknown completion status 0x%04x\n",
1346 id, sts->completion_status);
1347 host_status = DID_ERROR;
1351 return (sts->scsi_status & STATUS_MASK) | (host_status << 16);
1354 static Scsi_Cmnd *qlogicpti_intr_handler(struct qlogicpti *qpti)
1356 Scsi_Cmnd *Cmnd, *done_queue = NULL;
1357 struct Status_Entry *sts;
1358 u_int in_ptr, out_ptr;
1360 if (!(sbus_readw(qpti->qregs + SBUS_STAT) & SBUS_STAT_RINT))
1363 in_ptr = sbus_readw(qpti->qregs + MBOX5);
1364 sbus_writew(HCCTRL_CRIRQ, qpti->qregs + HCCTRL);
1365 if (sbus_readw(qpti->qregs + SBUS_SEMAPHORE) & SBUS_SEMAPHORE_LCK) {
1366 switch (sbus_readw(qpti->qregs + MBOX0)) {
1367 case ASYNC_SCSI_BUS_RESET:
1368 case EXECUTION_TIMEOUT_RESET:
1369 qpti->send_marker = 1;
1371 case INVALID_COMMAND:
1372 case HOST_INTERFACE_ERROR:
1374 case COMMAND_PARAM_ERROR:
1377 sbus_writew(0, qpti->qregs + SBUS_SEMAPHORE);
1380 /* This looks like a network driver! */
1381 out_ptr = qpti->res_out_ptr;
1382 while (out_ptr != in_ptr) {
1385 sts = (struct Status_Entry *) &qpti->res_cpu[out_ptr];
1386 out_ptr = NEXT_RES_PTR(out_ptr);
1388 /* We store an index in the handle, not the pointer in
1389 * some form. This avoids problems due to the fact
1390 * that the handle provided is only 32-bits. -DaveM
1392 cmd_slot = sts->handle;
1393 Cmnd = qpti->cmd_slots[cmd_slot];
1394 qpti->cmd_slots[cmd_slot] = NULL;
1396 if (sts->completion_status == CS_RESET_OCCURRED ||
1397 sts->completion_status == CS_ABORTED ||
1398 (sts->status_flags & STF_BUS_RESET))
1399 qpti->send_marker = 1;
1401 if (sts->state_flags & SF_GOT_SENSE)
1402 memcpy(Cmnd->sense_buffer, sts->req_sense_data,
1403 sizeof(Cmnd->sense_buffer));
1405 if (sts->hdr.entry_type == ENTRY_STATUS)
1407 qlogicpti_return_status(sts, qpti->qpti_id);
1409 Cmnd->result = DID_ERROR << 16;
1412 sbus_unmap_sg(qpti->sdev,
1413 (struct scatterlist *)Cmnd->buffer,
1415 scsi_to_sbus_dma_dir(Cmnd->sc_data_direction));
1417 sbus_unmap_single(qpti->sdev,
1418 (__u32)((unsigned long)Cmnd->SCp.ptr),
1419 Cmnd->request_bufflen,
1420 scsi_to_sbus_dma_dir(Cmnd->sc_data_direction));
1422 qpti->cmd_count[Cmnd->device->id]--;
1423 sbus_writew(out_ptr, qpti->qregs + MBOX5);
1424 Cmnd->host_scribble = (unsigned char *) done_queue;
1427 qpti->res_out_ptr = out_ptr;
1432 static irqreturn_t qpti_intr(int irq, void *dev_id, struct pt_regs *regs)
1434 struct qlogicpti *qpti = dev_id;
1435 unsigned long flags;
1438 spin_lock_irqsave(qpti->qhost->host_lock, flags);
1439 dq = qlogicpti_intr_handler(qpti);
1445 next = (Scsi_Cmnd *) dq->host_scribble;
1448 } while (dq != NULL);
1450 spin_unlock_irqrestore(qpti->qhost->host_lock, flags);
1455 static int qlogicpti_abort(Scsi_Cmnd *Cmnd)
1458 struct Scsi_Host *host = Cmnd->device->host;
1459 struct qlogicpti *qpti = (struct qlogicpti *) host->hostdata;
1460 int return_status = SUCCESS;
1464 printk(KERN_WARNING "qlogicpti : Aborting cmd for tgt[%d] lun[%d]\n",
1465 (int)Cmnd->device->id, (int)Cmnd->device->lun);
1467 qlogicpti_disable_irqs(qpti);
1469 /* Find the 32-bit cookie we gave to the firmware for
1472 for (i = 0; i < QLOGICPTI_REQ_QUEUE_LEN + 1; i++)
1473 if (qpti->cmd_slots[i] == Cmnd)
1477 param[0] = MBOX_ABORT;
1478 param[1] = (((u_short) Cmnd->device->id) << 8) | Cmnd->device->lun;
1479 param[2] = cmd_cookie >> 16;
1480 param[3] = cmd_cookie & 0xffff;
1481 if (qlogicpti_mbox_command(qpti, param, 0) ||
1482 (param[0] != MBOX_COMMAND_COMPLETE)) {
1483 printk(KERN_EMERG "qlogicpti : scsi abort failure: %x\n", param[0]);
1484 return_status = FAILED;
1487 qlogicpti_enable_irqs(qpti);
1489 return return_status;
1492 static int qlogicpti_reset(Scsi_Cmnd *Cmnd)
1495 struct Scsi_Host *host = Cmnd->device->host;
1496 struct qlogicpti *qpti = (struct qlogicpti *) host->hostdata;
1497 int return_status = SUCCESS;
1499 printk(KERN_WARNING "qlogicpti : Resetting SCSI bus!\n");
1501 qlogicpti_disable_irqs(qpti);
1503 param[0] = MBOX_BUS_RESET;
1504 param[1] = qpti->host_param.bus_reset_delay;
1505 if (qlogicpti_mbox_command(qpti, param, 0) ||
1506 (param[0] != MBOX_COMMAND_COMPLETE)) {
1507 printk(KERN_EMERG "qlogicisp : scsi bus reset failure: %x\n", param[0]);
1508 return_status = FAILED;
1511 qlogicpti_enable_irqs(qpti);
1513 return return_status;
1516 static Scsi_Host_Template driver_template = {
1517 .detect = qlogicpti_detect,
1518 .release = qlogicpti_release,
1519 .info = qlogicpti_info,
1520 .queuecommand = qlogicpti_queuecommand_slow,
1521 .eh_abort_handler = qlogicpti_abort,
1522 .eh_bus_reset_handler = qlogicpti_reset,
1523 .can_queue = QLOGICPTI_REQ_QUEUE_LEN,
1525 .sg_tablesize = QLOGICPTI_MAX_SG(QLOGICPTI_REQ_QUEUE_LEN),
1527 .use_clustering = ENABLE_CLUSTERING,
1531 #include "scsi_module.c"
1533 MODULE_LICENSE("GPL");