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1da177e4 LT |
1 | /* qlogicpti.c: Performance Technologies QlogicISP sbus card driver. |
2 | * | |
3d4253d9 | 3 | * Copyright (C) 1996, 2006 David S. Miller (davem@davemloft.net) |
1da177e4 LT |
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/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> | |
26 | #include <linux/module.h> | |
60c904ae | 27 | #include <linux/jiffies.h> |
1da177e4 LT |
28 | |
29 | #include <asm/byteorder.h> | |
30 | ||
31 | #include "qlogicpti.h" | |
32 | ||
33 | #include <asm/sbus.h> | |
34 | #include <asm/dma.h> | |
35 | #include <asm/system.h> | |
36 | #include <asm/ptrace.h> | |
37 | #include <asm/pgtable.h> | |
38 | #include <asm/oplib.h> | |
39 | #include <asm/io.h> | |
40 | #include <asm/irq.h> | |
41 | ||
42 | #include <scsi/scsi.h> | |
43 | #include <scsi/scsi_cmnd.h> | |
44 | #include <scsi/scsi_device.h> | |
45 | #include <scsi/scsi_eh.h> | |
1da177e4 LT |
46 | #include <scsi/scsi_tcq.h> |
47 | #include <scsi/scsi_host.h> | |
48 | ||
1da177e4 LT |
49 | #define MAX_TARGETS 16 |
50 | #define MAX_LUNS 8 /* 32 for 1.31 F/W */ | |
51 | ||
52 | #define DEFAULT_LOOP_COUNT 10000 | |
53 | ||
54 | #include "qlogicpti_asm.c" | |
55 | ||
56 | static struct qlogicpti *qptichain = NULL; | |
57 | static DEFINE_SPINLOCK(qptichain_lock); | |
1da177e4 LT |
58 | |
59 | #define PACKB(a, b) (((a)<<4)|(b)) | |
60 | ||
61 | static const u_char mbox_param[] = { | |
62 | PACKB(1, 1), /* MBOX_NO_OP */ | |
63 | PACKB(5, 5), /* MBOX_LOAD_RAM */ | |
64 | PACKB(2, 0), /* MBOX_EXEC_FIRMWARE */ | |
65 | PACKB(5, 5), /* MBOX_DUMP_RAM */ | |
66 | PACKB(3, 3), /* MBOX_WRITE_RAM_WORD */ | |
67 | PACKB(2, 3), /* MBOX_READ_RAM_WORD */ | |
68 | PACKB(6, 6), /* MBOX_MAILBOX_REG_TEST */ | |
69 | PACKB(2, 3), /* MBOX_VERIFY_CHECKSUM */ | |
70 | PACKB(1, 3), /* MBOX_ABOUT_FIRMWARE */ | |
71 | PACKB(0, 0), /* 0x0009 */ | |
72 | PACKB(0, 0), /* 0x000a */ | |
73 | PACKB(0, 0), /* 0x000b */ | |
74 | PACKB(0, 0), /* 0x000c */ | |
75 | PACKB(0, 0), /* 0x000d */ | |
76 | PACKB(1, 2), /* MBOX_CHECK_FIRMWARE */ | |
77 | PACKB(0, 0), /* 0x000f */ | |
78 | PACKB(5, 5), /* MBOX_INIT_REQ_QUEUE */ | |
79 | PACKB(6, 6), /* MBOX_INIT_RES_QUEUE */ | |
80 | PACKB(4, 4), /* MBOX_EXECUTE_IOCB */ | |
81 | PACKB(2, 2), /* MBOX_WAKE_UP */ | |
82 | PACKB(1, 6), /* MBOX_STOP_FIRMWARE */ | |
83 | PACKB(4, 4), /* MBOX_ABORT */ | |
84 | PACKB(2, 2), /* MBOX_ABORT_DEVICE */ | |
85 | PACKB(3, 3), /* MBOX_ABORT_TARGET */ | |
86 | PACKB(2, 2), /* MBOX_BUS_RESET */ | |
87 | PACKB(2, 3), /* MBOX_STOP_QUEUE */ | |
88 | PACKB(2, 3), /* MBOX_START_QUEUE */ | |
89 | PACKB(2, 3), /* MBOX_SINGLE_STEP_QUEUE */ | |
90 | PACKB(2, 3), /* MBOX_ABORT_QUEUE */ | |
91 | PACKB(2, 4), /* MBOX_GET_DEV_QUEUE_STATUS */ | |
92 | PACKB(0, 0), /* 0x001e */ | |
93 | PACKB(1, 3), /* MBOX_GET_FIRMWARE_STATUS */ | |
94 | PACKB(1, 2), /* MBOX_GET_INIT_SCSI_ID */ | |
95 | PACKB(1, 2), /* MBOX_GET_SELECT_TIMEOUT */ | |
96 | PACKB(1, 3), /* MBOX_GET_RETRY_COUNT */ | |
97 | PACKB(1, 2), /* MBOX_GET_TAG_AGE_LIMIT */ | |
98 | PACKB(1, 2), /* MBOX_GET_CLOCK_RATE */ | |
99 | PACKB(1, 2), /* MBOX_GET_ACT_NEG_STATE */ | |
100 | PACKB(1, 2), /* MBOX_GET_ASYNC_DATA_SETUP_TIME */ | |
101 | PACKB(1, 3), /* MBOX_GET_SBUS_PARAMS */ | |
102 | PACKB(2, 4), /* MBOX_GET_TARGET_PARAMS */ | |
103 | PACKB(2, 4), /* MBOX_GET_DEV_QUEUE_PARAMS */ | |
104 | PACKB(0, 0), /* 0x002a */ | |
105 | PACKB(0, 0), /* 0x002b */ | |
106 | PACKB(0, 0), /* 0x002c */ | |
107 | PACKB(0, 0), /* 0x002d */ | |
108 | PACKB(0, 0), /* 0x002e */ | |
109 | PACKB(0, 0), /* 0x002f */ | |
110 | PACKB(2, 2), /* MBOX_SET_INIT_SCSI_ID */ | |
111 | PACKB(2, 2), /* MBOX_SET_SELECT_TIMEOUT */ | |
112 | PACKB(3, 3), /* MBOX_SET_RETRY_COUNT */ | |
113 | PACKB(2, 2), /* MBOX_SET_TAG_AGE_LIMIT */ | |
114 | PACKB(2, 2), /* MBOX_SET_CLOCK_RATE */ | |
115 | PACKB(2, 2), /* MBOX_SET_ACTIVE_NEG_STATE */ | |
116 | PACKB(2, 2), /* MBOX_SET_ASYNC_DATA_SETUP_TIME */ | |
117 | PACKB(3, 3), /* MBOX_SET_SBUS_CONTROL_PARAMS */ | |
118 | PACKB(4, 4), /* MBOX_SET_TARGET_PARAMS */ | |
119 | PACKB(4, 4), /* MBOX_SET_DEV_QUEUE_PARAMS */ | |
120 | PACKB(0, 0), /* 0x003a */ | |
121 | PACKB(0, 0), /* 0x003b */ | |
122 | PACKB(0, 0), /* 0x003c */ | |
123 | PACKB(0, 0), /* 0x003d */ | |
124 | PACKB(0, 0), /* 0x003e */ | |
125 | PACKB(0, 0), /* 0x003f */ | |
126 | PACKB(0, 0), /* 0x0040 */ | |
127 | PACKB(0, 0), /* 0x0041 */ | |
128 | PACKB(0, 0) /* 0x0042 */ | |
129 | }; | |
130 | ||
6391a113 | 131 | #define MAX_MBOX_COMMAND ARRAY_SIZE(mbox_param) |
1da177e4 LT |
132 | |
133 | /* queue length's _must_ be power of two: */ | |
134 | #define QUEUE_DEPTH(in, out, ql) ((in - out) & (ql)) | |
135 | #define REQ_QUEUE_DEPTH(in, out) QUEUE_DEPTH(in, out, \ | |
136 | QLOGICPTI_REQ_QUEUE_LEN) | |
137 | #define RES_QUEUE_DEPTH(in, out) QUEUE_DEPTH(in, out, RES_QUEUE_LEN) | |
138 | ||
139 | static inline void qlogicpti_enable_irqs(struct qlogicpti *qpti) | |
140 | { | |
141 | sbus_writew(SBUS_CTRL_ERIRQ | SBUS_CTRL_GENAB, | |
142 | qpti->qregs + SBUS_CTRL); | |
143 | } | |
144 | ||
145 | static inline void qlogicpti_disable_irqs(struct qlogicpti *qpti) | |
146 | { | |
147 | sbus_writew(0, qpti->qregs + SBUS_CTRL); | |
148 | } | |
149 | ||
150 | static inline void set_sbus_cfg1(struct qlogicpti *qpti) | |
151 | { | |
152 | u16 val; | |
153 | u8 bursts = qpti->bursts; | |
154 | ||
155 | #if 0 /* It appears that at least PTI cards do not support | |
156 | * 64-byte bursts and that setting the B64 bit actually | |
157 | * is a nop and the chip ends up using the smallest burst | |
158 | * size. -DaveM | |
159 | */ | |
160 | if (sbus_can_burst64(qpti->sdev) && (bursts & DMA_BURST64)) { | |
161 | val = (SBUS_CFG1_BENAB | SBUS_CFG1_B64); | |
162 | } else | |
163 | #endif | |
164 | if (bursts & DMA_BURST32) { | |
165 | val = (SBUS_CFG1_BENAB | SBUS_CFG1_B32); | |
166 | } else if (bursts & DMA_BURST16) { | |
167 | val = (SBUS_CFG1_BENAB | SBUS_CFG1_B16); | |
168 | } else if (bursts & DMA_BURST8) { | |
169 | val = (SBUS_CFG1_BENAB | SBUS_CFG1_B8); | |
170 | } else { | |
171 | val = 0; /* No sbus bursts for you... */ | |
172 | } | |
173 | sbus_writew(val, qpti->qregs + SBUS_CFG1); | |
174 | } | |
175 | ||
176 | static int qlogicpti_mbox_command(struct qlogicpti *qpti, u_short param[], int force) | |
177 | { | |
178 | int loop_count; | |
179 | u16 tmp; | |
180 | ||
181 | if (mbox_param[param[0]] == 0) | |
182 | return 1; | |
183 | ||
184 | /* Set SBUS semaphore. */ | |
185 | tmp = sbus_readw(qpti->qregs + SBUS_SEMAPHORE); | |
186 | tmp |= SBUS_SEMAPHORE_LCK; | |
187 | sbus_writew(tmp, qpti->qregs + SBUS_SEMAPHORE); | |
188 | ||
189 | /* Wait for host IRQ bit to clear. */ | |
190 | loop_count = DEFAULT_LOOP_COUNT; | |
191 | while (--loop_count && (sbus_readw(qpti->qregs + HCCTRL) & HCCTRL_HIRQ)) { | |
192 | barrier(); | |
193 | cpu_relax(); | |
194 | } | |
195 | if (!loop_count) | |
196 | printk(KERN_EMERG "qlogicpti: mbox_command loop timeout #1\n"); | |
197 | ||
198 | /* Write mailbox command registers. */ | |
199 | switch (mbox_param[param[0]] >> 4) { | |
200 | case 6: sbus_writew(param[5], qpti->qregs + MBOX5); | |
201 | case 5: sbus_writew(param[4], qpti->qregs + MBOX4); | |
202 | case 4: sbus_writew(param[3], qpti->qregs + MBOX3); | |
203 | case 3: sbus_writew(param[2], qpti->qregs + MBOX2); | |
204 | case 2: sbus_writew(param[1], qpti->qregs + MBOX1); | |
205 | case 1: sbus_writew(param[0], qpti->qregs + MBOX0); | |
206 | } | |
207 | ||
208 | /* Clear RISC interrupt. */ | |
209 | tmp = sbus_readw(qpti->qregs + HCCTRL); | |
210 | tmp |= HCCTRL_CRIRQ; | |
211 | sbus_writew(tmp, qpti->qregs + HCCTRL); | |
212 | ||
213 | /* Clear SBUS semaphore. */ | |
214 | sbus_writew(0, qpti->qregs + SBUS_SEMAPHORE); | |
215 | ||
216 | /* Set HOST interrupt. */ | |
217 | tmp = sbus_readw(qpti->qregs + HCCTRL); | |
218 | tmp |= HCCTRL_SHIRQ; | |
219 | sbus_writew(tmp, qpti->qregs + HCCTRL); | |
220 | ||
221 | /* Wait for HOST interrupt clears. */ | |
222 | loop_count = DEFAULT_LOOP_COUNT; | |
223 | while (--loop_count && | |
224 | (sbus_readw(qpti->qregs + HCCTRL) & HCCTRL_CRIRQ)) | |
225 | udelay(20); | |
226 | if (!loop_count) | |
227 | printk(KERN_EMERG "qlogicpti: mbox_command[%04x] loop timeout #2\n", | |
228 | param[0]); | |
229 | ||
230 | /* Wait for SBUS semaphore to get set. */ | |
231 | loop_count = DEFAULT_LOOP_COUNT; | |
232 | while (--loop_count && | |
233 | !(sbus_readw(qpti->qregs + SBUS_SEMAPHORE) & SBUS_SEMAPHORE_LCK)) { | |
234 | udelay(20); | |
235 | ||
236 | /* Workaround for some buggy chips. */ | |
237 | if (sbus_readw(qpti->qregs + MBOX0) & 0x4000) | |
238 | break; | |
239 | } | |
240 | if (!loop_count) | |
241 | printk(KERN_EMERG "qlogicpti: mbox_command[%04x] loop timeout #3\n", | |
242 | param[0]); | |
243 | ||
244 | /* Wait for MBOX busy condition to go away. */ | |
245 | loop_count = DEFAULT_LOOP_COUNT; | |
246 | while (--loop_count && (sbus_readw(qpti->qregs + MBOX0) == 0x04)) | |
247 | udelay(20); | |
248 | if (!loop_count) | |
249 | printk(KERN_EMERG "qlogicpti: mbox_command[%04x] loop timeout #4\n", | |
250 | param[0]); | |
251 | ||
252 | /* Read back output parameters. */ | |
253 | switch (mbox_param[param[0]] & 0xf) { | |
254 | case 6: param[5] = sbus_readw(qpti->qregs + MBOX5); | |
255 | case 5: param[4] = sbus_readw(qpti->qregs + MBOX4); | |
256 | case 4: param[3] = sbus_readw(qpti->qregs + MBOX3); | |
257 | case 3: param[2] = sbus_readw(qpti->qregs + MBOX2); | |
258 | case 2: param[1] = sbus_readw(qpti->qregs + MBOX1); | |
259 | case 1: param[0] = sbus_readw(qpti->qregs + MBOX0); | |
260 | } | |
261 | ||
262 | /* Clear RISC interrupt. */ | |
263 | tmp = sbus_readw(qpti->qregs + HCCTRL); | |
264 | tmp |= HCCTRL_CRIRQ; | |
265 | sbus_writew(tmp, qpti->qregs + HCCTRL); | |
266 | ||
267 | /* Release SBUS semaphore. */ | |
268 | tmp = sbus_readw(qpti->qregs + SBUS_SEMAPHORE); | |
269 | tmp &= ~(SBUS_SEMAPHORE_LCK); | |
270 | sbus_writew(tmp, qpti->qregs + SBUS_SEMAPHORE); | |
271 | ||
272 | /* We're done. */ | |
273 | return 0; | |
274 | } | |
275 | ||
276 | static inline void qlogicpti_set_hostdev_defaults(struct qlogicpti *qpti) | |
277 | { | |
278 | int i; | |
279 | ||
280 | qpti->host_param.initiator_scsi_id = qpti->scsi_id; | |
281 | qpti->host_param.bus_reset_delay = 3; | |
282 | qpti->host_param.retry_count = 0; | |
283 | qpti->host_param.retry_delay = 5; | |
284 | qpti->host_param.async_data_setup_time = 3; | |
285 | qpti->host_param.req_ack_active_negation = 1; | |
286 | qpti->host_param.data_line_active_negation = 1; | |
287 | qpti->host_param.data_dma_burst_enable = 1; | |
288 | qpti->host_param.command_dma_burst_enable = 1; | |
289 | qpti->host_param.tag_aging = 8; | |
290 | qpti->host_param.selection_timeout = 250; | |
291 | qpti->host_param.max_queue_depth = 256; | |
292 | ||
293 | for(i = 0; i < MAX_TARGETS; i++) { | |
294 | /* | |
295 | * disconnect, parity, arq, reneg on reset, and, oddly enough | |
296 | * tags...the midlayer's notion of tagged support has to match | |
297 | * our device settings, and since we base whether we enable a | |
298 | * tag on a per-cmnd basis upon what the midlayer sez, we | |
299 | * actually enable the capability here. | |
300 | */ | |
301 | qpti->dev_param[i].device_flags = 0xcd; | |
302 | qpti->dev_param[i].execution_throttle = 16; | |
303 | if (qpti->ultra) { | |
304 | qpti->dev_param[i].synchronous_period = 12; | |
305 | qpti->dev_param[i].synchronous_offset = 8; | |
306 | } else { | |
307 | qpti->dev_param[i].synchronous_period = 25; | |
308 | qpti->dev_param[i].synchronous_offset = 12; | |
309 | } | |
310 | qpti->dev_param[i].device_enable = 1; | |
311 | } | |
312 | /* this is very important to set! */ | |
313 | qpti->sbits = 1 << qpti->scsi_id; | |
314 | } | |
315 | ||
316 | static int qlogicpti_reset_hardware(struct Scsi_Host *host) | |
317 | { | |
318 | struct qlogicpti *qpti = (struct qlogicpti *) host->hostdata; | |
319 | u_short param[6]; | |
320 | unsigned short risc_code_addr; | |
321 | int loop_count, i; | |
322 | unsigned long flags; | |
323 | ||
324 | risc_code_addr = 0x1000; /* all load addresses are at 0x1000 */ | |
325 | ||
326 | spin_lock_irqsave(host->host_lock, flags); | |
327 | ||
328 | sbus_writew(HCCTRL_PAUSE, qpti->qregs + HCCTRL); | |
329 | ||
330 | /* Only reset the scsi bus if it is not free. */ | |
331 | if (sbus_readw(qpti->qregs + CPU_PCTRL) & CPU_PCTRL_BSY) { | |
332 | sbus_writew(CPU_ORIDE_RMOD, qpti->qregs + CPU_ORIDE); | |
333 | sbus_writew(CPU_CMD_BRESET, qpti->qregs + CPU_CMD); | |
334 | udelay(400); | |
335 | } | |
336 | ||
337 | sbus_writew(SBUS_CTRL_RESET, qpti->qregs + SBUS_CTRL); | |
338 | sbus_writew((DMA_CTRL_CCLEAR | DMA_CTRL_CIRQ), qpti->qregs + CMD_DMA_CTRL); | |
339 | sbus_writew((DMA_CTRL_CCLEAR | DMA_CTRL_CIRQ), qpti->qregs + DATA_DMA_CTRL); | |
340 | ||
341 | loop_count = DEFAULT_LOOP_COUNT; | |
342 | while (--loop_count && ((sbus_readw(qpti->qregs + MBOX0) & 0xff) == 0x04)) | |
343 | udelay(20); | |
344 | if (!loop_count) | |
345 | printk(KERN_EMERG "qlogicpti: reset_hardware loop timeout\n"); | |
346 | ||
347 | sbus_writew(HCCTRL_PAUSE, qpti->qregs + HCCTRL); | |
348 | set_sbus_cfg1(qpti); | |
349 | qlogicpti_enable_irqs(qpti); | |
350 | ||
351 | if (sbus_readw(qpti->qregs + RISC_PSR) & RISC_PSR_ULTRA) { | |
352 | qpti->ultra = 1; | |
353 | sbus_writew((RISC_MTREG_P0ULTRA | RISC_MTREG_P1ULTRA), | |
354 | qpti->qregs + RISC_MTREG); | |
355 | } else { | |
356 | qpti->ultra = 0; | |
357 | sbus_writew((RISC_MTREG_P0DFLT | RISC_MTREG_P1DFLT), | |
358 | qpti->qregs + RISC_MTREG); | |
359 | } | |
360 | ||
361 | /* reset adapter and per-device default values. */ | |
362 | /* do it after finding out whether we're ultra mode capable */ | |
363 | qlogicpti_set_hostdev_defaults(qpti); | |
364 | ||
365 | /* Release the RISC processor. */ | |
366 | sbus_writew(HCCTRL_REL, qpti->qregs + HCCTRL); | |
367 | ||
368 | /* Get RISC to start executing the firmware code. */ | |
369 | param[0] = MBOX_EXEC_FIRMWARE; | |
370 | param[1] = risc_code_addr; | |
371 | if (qlogicpti_mbox_command(qpti, param, 1)) { | |
372 | printk(KERN_EMERG "qlogicpti%d: Cannot execute ISP firmware.\n", | |
373 | qpti->qpti_id); | |
374 | spin_unlock_irqrestore(host->host_lock, flags); | |
375 | return 1; | |
376 | } | |
377 | ||
378 | /* Set initiator scsi ID. */ | |
379 | param[0] = MBOX_SET_INIT_SCSI_ID; | |
380 | param[1] = qpti->host_param.initiator_scsi_id; | |
381 | if (qlogicpti_mbox_command(qpti, param, 1) || | |
382 | (param[0] != MBOX_COMMAND_COMPLETE)) { | |
383 | printk(KERN_EMERG "qlogicpti%d: Cannot set initiator SCSI ID.\n", | |
384 | qpti->qpti_id); | |
385 | spin_unlock_irqrestore(host->host_lock, flags); | |
386 | return 1; | |
387 | } | |
388 | ||
389 | /* Initialize state of the queues, both hw and sw. */ | |
390 | qpti->req_in_ptr = qpti->res_out_ptr = 0; | |
391 | ||
392 | param[0] = MBOX_INIT_RES_QUEUE; | |
393 | param[1] = RES_QUEUE_LEN + 1; | |
394 | param[2] = (u_short) (qpti->res_dvma >> 16); | |
395 | param[3] = (u_short) (qpti->res_dvma & 0xffff); | |
396 | param[4] = param[5] = 0; | |
397 | if (qlogicpti_mbox_command(qpti, param, 1)) { | |
398 | printk(KERN_EMERG "qlogicpti%d: Cannot init response queue.\n", | |
399 | qpti->qpti_id); | |
400 | spin_unlock_irqrestore(host->host_lock, flags); | |
401 | return 1; | |
402 | } | |
403 | ||
404 | param[0] = MBOX_INIT_REQ_QUEUE; | |
405 | param[1] = QLOGICPTI_REQ_QUEUE_LEN + 1; | |
406 | param[2] = (u_short) (qpti->req_dvma >> 16); | |
407 | param[3] = (u_short) (qpti->req_dvma & 0xffff); | |
408 | param[4] = param[5] = 0; | |
409 | if (qlogicpti_mbox_command(qpti, param, 1)) { | |
410 | printk(KERN_EMERG "qlogicpti%d: Cannot init request queue.\n", | |
411 | qpti->qpti_id); | |
412 | spin_unlock_irqrestore(host->host_lock, flags); | |
413 | return 1; | |
414 | } | |
415 | ||
416 | param[0] = MBOX_SET_RETRY_COUNT; | |
417 | param[1] = qpti->host_param.retry_count; | |
418 | param[2] = qpti->host_param.retry_delay; | |
419 | qlogicpti_mbox_command(qpti, param, 0); | |
420 | ||
421 | param[0] = MBOX_SET_TAG_AGE_LIMIT; | |
422 | param[1] = qpti->host_param.tag_aging; | |
423 | qlogicpti_mbox_command(qpti, param, 0); | |
424 | ||
425 | for (i = 0; i < MAX_TARGETS; i++) { | |
426 | param[0] = MBOX_GET_DEV_QUEUE_PARAMS; | |
427 | param[1] = (i << 8); | |
428 | qlogicpti_mbox_command(qpti, param, 0); | |
429 | } | |
430 | ||
431 | param[0] = MBOX_GET_FIRMWARE_STATUS; | |
432 | qlogicpti_mbox_command(qpti, param, 0); | |
433 | ||
434 | param[0] = MBOX_SET_SELECT_TIMEOUT; | |
435 | param[1] = qpti->host_param.selection_timeout; | |
436 | qlogicpti_mbox_command(qpti, param, 0); | |
437 | ||
438 | for (i = 0; i < MAX_TARGETS; i++) { | |
439 | param[0] = MBOX_SET_TARGET_PARAMS; | |
440 | param[1] = (i << 8); | |
441 | param[2] = (qpti->dev_param[i].device_flags << 8); | |
442 | /* | |
443 | * Since we're now loading 1.31 f/w, force narrow/async. | |
444 | */ | |
445 | param[2] |= 0xc0; | |
446 | param[3] = 0; /* no offset, we do not have sync mode yet */ | |
447 | qlogicpti_mbox_command(qpti, param, 0); | |
448 | } | |
449 | ||
450 | /* | |
451 | * Always (sigh) do an initial bus reset (kicks f/w). | |
452 | */ | |
453 | param[0] = MBOX_BUS_RESET; | |
454 | param[1] = qpti->host_param.bus_reset_delay; | |
455 | qlogicpti_mbox_command(qpti, param, 0); | |
456 | qpti->send_marker = 1; | |
457 | ||
458 | spin_unlock_irqrestore(host->host_lock, flags); | |
459 | return 0; | |
460 | } | |
461 | ||
462 | #define PTI_RESET_LIMIT 400 | |
463 | ||
464 | static int __init qlogicpti_load_firmware(struct qlogicpti *qpti) | |
465 | { | |
466 | struct Scsi_Host *host = qpti->qhost; | |
467 | unsigned short csum = 0; | |
468 | unsigned short param[6]; | |
469 | unsigned short *risc_code, risc_code_addr, risc_code_length; | |
470 | unsigned long flags; | |
471 | int i, timeout; | |
472 | ||
473 | risc_code = &sbus_risc_code01[0]; | |
474 | risc_code_addr = 0x1000; /* all f/w modules load at 0x1000 */ | |
475 | risc_code_length = sbus_risc_code_length01; | |
476 | ||
477 | spin_lock_irqsave(host->host_lock, flags); | |
478 | ||
479 | /* Verify the checksum twice, one before loading it, and once | |
480 | * afterwards via the mailbox commands. | |
481 | */ | |
482 | for (i = 0; i < risc_code_length; i++) | |
483 | csum += risc_code[i]; | |
484 | if (csum) { | |
485 | spin_unlock_irqrestore(host->host_lock, flags); | |
486 | printk(KERN_EMERG "qlogicpti%d: Aieee, firmware checksum failed!", | |
487 | qpti->qpti_id); | |
488 | return 1; | |
489 | } | |
490 | sbus_writew(SBUS_CTRL_RESET, qpti->qregs + SBUS_CTRL); | |
491 | sbus_writew((DMA_CTRL_CCLEAR | DMA_CTRL_CIRQ), qpti->qregs + CMD_DMA_CTRL); | |
492 | sbus_writew((DMA_CTRL_CCLEAR | DMA_CTRL_CIRQ), qpti->qregs + DATA_DMA_CTRL); | |
493 | timeout = PTI_RESET_LIMIT; | |
494 | while (--timeout && (sbus_readw(qpti->qregs + SBUS_CTRL) & SBUS_CTRL_RESET)) | |
495 | udelay(20); | |
496 | if (!timeout) { | |
497 | spin_unlock_irqrestore(host->host_lock, flags); | |
498 | printk(KERN_EMERG "qlogicpti%d: Cannot reset the ISP.", qpti->qpti_id); | |
499 | return 1; | |
500 | } | |
501 | ||
502 | sbus_writew(HCCTRL_RESET, qpti->qregs + HCCTRL); | |
503 | mdelay(1); | |
504 | ||
505 | sbus_writew((SBUS_CTRL_GENAB | SBUS_CTRL_ERIRQ), qpti->qregs + SBUS_CTRL); | |
506 | set_sbus_cfg1(qpti); | |
507 | sbus_writew(0, qpti->qregs + SBUS_SEMAPHORE); | |
508 | ||
509 | if (sbus_readw(qpti->qregs + RISC_PSR) & RISC_PSR_ULTRA) { | |
510 | qpti->ultra = 1; | |
511 | sbus_writew((RISC_MTREG_P0ULTRA | RISC_MTREG_P1ULTRA), | |
512 | qpti->qregs + RISC_MTREG); | |
513 | } else { | |
514 | qpti->ultra = 0; | |
515 | sbus_writew((RISC_MTREG_P0DFLT | RISC_MTREG_P1DFLT), | |
516 | qpti->qregs + RISC_MTREG); | |
517 | } | |
518 | ||
519 | sbus_writew(HCCTRL_REL, qpti->qregs + HCCTRL); | |
520 | ||
521 | /* Pin lines are only stable while RISC is paused. */ | |
522 | sbus_writew(HCCTRL_PAUSE, qpti->qregs + HCCTRL); | |
523 | if (sbus_readw(qpti->qregs + CPU_PDIFF) & CPU_PDIFF_MODE) | |
524 | qpti->differential = 1; | |
525 | else | |
526 | qpti->differential = 0; | |
527 | sbus_writew(HCCTRL_REL, qpti->qregs + HCCTRL); | |
528 | ||
529 | /* This shouldn't be necessary- we've reset things so we should be | |
530 | running from the ROM now.. */ | |
531 | ||
532 | param[0] = MBOX_STOP_FIRMWARE; | |
533 | param[1] = param[2] = param[3] = param[4] = param[5] = 0; | |
534 | if (qlogicpti_mbox_command(qpti, param, 1)) { | |
535 | printk(KERN_EMERG "qlogicpti%d: Cannot stop firmware for reload.\n", | |
536 | qpti->qpti_id); | |
537 | spin_unlock_irqrestore(host->host_lock, flags); | |
538 | return 1; | |
539 | } | |
540 | ||
541 | /* Load it up.. */ | |
542 | for (i = 0; i < risc_code_length; i++) { | |
543 | param[0] = MBOX_WRITE_RAM_WORD; | |
544 | param[1] = risc_code_addr + i; | |
545 | param[2] = risc_code[i]; | |
546 | if (qlogicpti_mbox_command(qpti, param, 1) || | |
547 | param[0] != MBOX_COMMAND_COMPLETE) { | |
548 | printk("qlogicpti%d: Firmware dload failed, I'm bolixed!\n", | |
549 | qpti->qpti_id); | |
550 | spin_unlock_irqrestore(host->host_lock, flags); | |
551 | return 1; | |
552 | } | |
553 | } | |
554 | ||
555 | /* Reset the ISP again. */ | |
556 | sbus_writew(HCCTRL_RESET, qpti->qregs + HCCTRL); | |
557 | mdelay(1); | |
558 | ||
559 | qlogicpti_enable_irqs(qpti); | |
560 | sbus_writew(0, qpti->qregs + SBUS_SEMAPHORE); | |
561 | sbus_writew(HCCTRL_REL, qpti->qregs + HCCTRL); | |
562 | ||
563 | /* Ask ISP to verify the checksum of the new code. */ | |
564 | param[0] = MBOX_VERIFY_CHECKSUM; | |
565 | param[1] = risc_code_addr; | |
566 | if (qlogicpti_mbox_command(qpti, param, 1) || | |
567 | (param[0] != MBOX_COMMAND_COMPLETE)) { | |
568 | printk(KERN_EMERG "qlogicpti%d: New firmware csum failure!\n", | |
569 | qpti->qpti_id); | |
570 | spin_unlock_irqrestore(host->host_lock, flags); | |
571 | return 1; | |
572 | } | |
573 | ||
574 | /* Start using newly downloaded firmware. */ | |
575 | param[0] = MBOX_EXEC_FIRMWARE; | |
576 | param[1] = risc_code_addr; | |
577 | qlogicpti_mbox_command(qpti, param, 1); | |
578 | ||
579 | param[0] = MBOX_ABOUT_FIRMWARE; | |
580 | if (qlogicpti_mbox_command(qpti, param, 1) || | |
581 | (param[0] != MBOX_COMMAND_COMPLETE)) { | |
582 | printk(KERN_EMERG "qlogicpti%d: AboutFirmware cmd fails.\n", | |
583 | qpti->qpti_id); | |
584 | spin_unlock_irqrestore(host->host_lock, flags); | |
585 | return 1; | |
586 | } | |
587 | ||
588 | /* Snag the major and minor revisions from the result. */ | |
589 | qpti->fware_majrev = param[1]; | |
590 | qpti->fware_minrev = param[2]; | |
591 | qpti->fware_micrev = param[3]; | |
592 | ||
593 | /* Set the clock rate */ | |
594 | param[0] = MBOX_SET_CLOCK_RATE; | |
595 | param[1] = qpti->clock; | |
596 | if (qlogicpti_mbox_command(qpti, param, 1) || | |
597 | (param[0] != MBOX_COMMAND_COMPLETE)) { | |
598 | printk(KERN_EMERG "qlogicpti%d: could not set clock rate.\n", | |
599 | qpti->qpti_id); | |
600 | spin_unlock_irqrestore(host->host_lock, flags); | |
601 | return 1; | |
602 | } | |
603 | ||
604 | if (qpti->is_pti != 0) { | |
605 | /* Load scsi initiator ID and interrupt level into sbus static ram. */ | |
606 | param[0] = MBOX_WRITE_RAM_WORD; | |
607 | param[1] = 0xff80; | |
608 | param[2] = (unsigned short) qpti->scsi_id; | |
609 | qlogicpti_mbox_command(qpti, param, 1); | |
610 | ||
611 | param[0] = MBOX_WRITE_RAM_WORD; | |
612 | param[1] = 0xff00; | |
613 | param[2] = (unsigned short) 3; | |
614 | qlogicpti_mbox_command(qpti, param, 1); | |
615 | } | |
616 | ||
617 | spin_unlock_irqrestore(host->host_lock, flags); | |
618 | return 0; | |
619 | } | |
620 | ||
621 | static int qlogicpti_verify_tmon(struct qlogicpti *qpti) | |
622 | { | |
623 | int curstat = sbus_readb(qpti->sreg); | |
624 | ||
625 | curstat &= 0xf0; | |
626 | if (!(curstat & SREG_FUSE) && (qpti->swsreg & SREG_FUSE)) | |
627 | printk("qlogicpti%d: Fuse returned to normal state.\n", qpti->qpti_id); | |
628 | if (!(curstat & SREG_TPOWER) && (qpti->swsreg & SREG_TPOWER)) | |
629 | printk("qlogicpti%d: termpwr back to normal state.\n", qpti->qpti_id); | |
630 | if (curstat != qpti->swsreg) { | |
631 | int error = 0; | |
632 | if (curstat & SREG_FUSE) { | |
633 | error++; | |
634 | printk("qlogicpti%d: Fuse is open!\n", qpti->qpti_id); | |
635 | } | |
636 | if (curstat & SREG_TPOWER) { | |
637 | error++; | |
638 | printk("qlogicpti%d: termpwr failure\n", qpti->qpti_id); | |
639 | } | |
640 | if (qpti->differential && | |
641 | (curstat & SREG_DSENSE) != SREG_DSENSE) { | |
642 | error++; | |
643 | printk("qlogicpti%d: You have a single ended device on a " | |
644 | "differential bus! Please fix!\n", qpti->qpti_id); | |
645 | } | |
646 | qpti->swsreg = curstat; | |
647 | return error; | |
648 | } | |
649 | return 0; | |
650 | } | |
651 | ||
652 | static irqreturn_t qpti_intr(int irq, void *dev_id, struct pt_regs *regs); | |
653 | ||
654 | static void __init qpti_chain_add(struct qlogicpti *qpti) | |
655 | { | |
656 | spin_lock_irq(&qptichain_lock); | |
657 | if (qptichain != NULL) { | |
658 | struct qlogicpti *qlink = qptichain; | |
659 | ||
660 | while(qlink->next) | |
661 | qlink = qlink->next; | |
662 | qlink->next = qpti; | |
663 | } else { | |
664 | qptichain = qpti; | |
665 | } | |
666 | qpti->next = NULL; | |
667 | spin_unlock_irq(&qptichain_lock); | |
668 | } | |
669 | ||
670 | static void __init qpti_chain_del(struct qlogicpti *qpti) | |
671 | { | |
672 | spin_lock_irq(&qptichain_lock); | |
673 | if (qptichain == qpti) { | |
674 | qptichain = qpti->next; | |
675 | } else { | |
676 | struct qlogicpti *qlink = qptichain; | |
677 | while(qlink->next != qpti) | |
678 | qlink = qlink->next; | |
679 | qlink->next = qpti->next; | |
680 | } | |
681 | qpti->next = NULL; | |
682 | spin_unlock_irq(&qptichain_lock); | |
683 | } | |
684 | ||
685 | static int __init qpti_map_regs(struct qlogicpti *qpti) | |
686 | { | |
687 | struct sbus_dev *sdev = qpti->sdev; | |
688 | ||
689 | qpti->qregs = sbus_ioremap(&sdev->resource[0], 0, | |
690 | sdev->reg_addrs[0].reg_size, | |
691 | "PTI Qlogic/ISP"); | |
692 | if (!qpti->qregs) { | |
693 | printk("PTI: Qlogic/ISP registers are unmappable\n"); | |
694 | return -1; | |
695 | } | |
696 | if (qpti->is_pti) { | |
697 | qpti->sreg = sbus_ioremap(&sdev->resource[0], (16 * 4096), | |
698 | sizeof(unsigned char), | |
699 | "PTI Qlogic/ISP statreg"); | |
700 | if (!qpti->sreg) { | |
701 | printk("PTI: Qlogic/ISP status register is unmappable\n"); | |
702 | return -1; | |
703 | } | |
704 | } | |
705 | return 0; | |
706 | } | |
707 | ||
708 | static int __init qpti_register_irq(struct qlogicpti *qpti) | |
709 | { | |
710 | struct sbus_dev *sdev = qpti->sdev; | |
711 | ||
712 | qpti->qhost->irq = qpti->irq = sdev->irqs[0]; | |
713 | ||
714 | /* We used to try various overly-clever things to | |
715 | * reduce the interrupt processing overhead on | |
716 | * sun4c/sun4m when multiple PTI's shared the | |
717 | * same IRQ. It was too complex and messy to | |
718 | * sanely maintain. | |
719 | */ | |
720 | if (request_irq(qpti->irq, qpti_intr, | |
721 | SA_SHIRQ, "Qlogic/PTI", qpti)) | |
722 | goto fail; | |
723 | ||
c6387a48 | 724 | printk("qpti%d: IRQ %d ", qpti->qpti_id, qpti->irq); |
1da177e4 LT |
725 | |
726 | return 0; | |
727 | ||
728 | fail: | |
729 | printk("qpti%d: Cannot acquire irq line\n", qpti->qpti_id); | |
730 | return -1; | |
731 | } | |
732 | ||
733 | static void __init qpti_get_scsi_id(struct qlogicpti *qpti) | |
734 | { | |
735 | qpti->scsi_id = prom_getintdefault(qpti->prom_node, | |
736 | "initiator-id", | |
737 | -1); | |
738 | if (qpti->scsi_id == -1) | |
739 | qpti->scsi_id = prom_getintdefault(qpti->prom_node, | |
740 | "scsi-initiator-id", | |
741 | -1); | |
742 | if (qpti->scsi_id == -1) | |
743 | qpti->scsi_id = | |
744 | prom_getintdefault(qpti->sdev->bus->prom_node, | |
745 | "scsi-initiator-id", 7); | |
746 | qpti->qhost->this_id = qpti->scsi_id; | |
747 | qpti->qhost->max_sectors = 64; | |
748 | ||
749 | printk("SCSI ID %d ", qpti->scsi_id); | |
750 | } | |
751 | ||
752 | static void qpti_get_bursts(struct qlogicpti *qpti) | |
753 | { | |
754 | struct sbus_dev *sdev = qpti->sdev; | |
755 | u8 bursts, bmask; | |
756 | ||
757 | bursts = prom_getintdefault(qpti->prom_node, "burst-sizes", 0xff); | |
758 | bmask = prom_getintdefault(sdev->bus->prom_node, | |
759 | "burst-sizes", 0xff); | |
760 | if (bmask != 0xff) | |
761 | bursts &= bmask; | |
762 | if (bursts == 0xff || | |
763 | (bursts & DMA_BURST16) == 0 || | |
764 | (bursts & DMA_BURST32) == 0) | |
765 | bursts = (DMA_BURST32 - 1); | |
766 | ||
767 | qpti->bursts = bursts; | |
768 | } | |
769 | ||
770 | static void qpti_get_clock(struct qlogicpti *qpti) | |
771 | { | |
772 | unsigned int cfreq; | |
773 | ||
774 | /* Check for what the clock input to this card is. | |
775 | * Default to 40Mhz. | |
776 | */ | |
777 | cfreq = prom_getintdefault(qpti->prom_node,"clock-frequency",40000000); | |
778 | qpti->clock = (cfreq + 500000)/1000000; | |
779 | if (qpti->clock == 0) /* bullshit */ | |
780 | qpti->clock = 40; | |
781 | } | |
782 | ||
783 | /* The request and response queues must each be aligned | |
784 | * on a page boundary. | |
785 | */ | |
786 | static int __init qpti_map_queues(struct qlogicpti *qpti) | |
787 | { | |
788 | struct sbus_dev *sdev = qpti->sdev; | |
789 | ||
790 | #define QSIZE(entries) (((entries) + 1) * QUEUE_ENTRY_LEN) | |
791 | qpti->res_cpu = sbus_alloc_consistent(sdev, | |
792 | QSIZE(RES_QUEUE_LEN), | |
793 | &qpti->res_dvma); | |
794 | if (qpti->res_cpu == NULL || | |
795 | qpti->res_dvma == 0) { | |
796 | printk("QPTI: Cannot map response queue.\n"); | |
797 | return -1; | |
798 | } | |
799 | ||
800 | qpti->req_cpu = sbus_alloc_consistent(sdev, | |
801 | QSIZE(QLOGICPTI_REQ_QUEUE_LEN), | |
802 | &qpti->req_dvma); | |
803 | if (qpti->req_cpu == NULL || | |
804 | qpti->req_dvma == 0) { | |
805 | sbus_free_consistent(sdev, QSIZE(RES_QUEUE_LEN), | |
806 | qpti->res_cpu, qpti->res_dvma); | |
807 | printk("QPTI: Cannot map request queue.\n"); | |
808 | return -1; | |
809 | } | |
810 | memset(qpti->res_cpu, 0, QSIZE(RES_QUEUE_LEN)); | |
811 | memset(qpti->req_cpu, 0, QSIZE(QLOGICPTI_REQ_QUEUE_LEN)); | |
812 | return 0; | |
813 | } | |
814 | ||
1da177e4 LT |
815 | const char *qlogicpti_info(struct Scsi_Host *host) |
816 | { | |
817 | static char buf[80]; | |
818 | struct qlogicpti *qpti = (struct qlogicpti *) host->hostdata; | |
819 | ||
c6387a48 DM |
820 | sprintf(buf, "PTI Qlogic,ISP SBUS SCSI irq %d regs at %p", |
821 | qpti->qhost->irq, qpti->qregs); | |
1da177e4 LT |
822 | return buf; |
823 | } | |
824 | ||
825 | /* I am a certified frobtronicist. */ | |
826 | static inline void marker_frob(struct Command_Entry *cmd) | |
827 | { | |
828 | struct Marker_Entry *marker = (struct Marker_Entry *) cmd; | |
829 | ||
830 | memset(marker, 0, sizeof(struct Marker_Entry)); | |
831 | marker->hdr.entry_cnt = 1; | |
832 | marker->hdr.entry_type = ENTRY_MARKER; | |
833 | marker->modifier = SYNC_ALL; | |
834 | marker->rsvd = 0; | |
835 | } | |
836 | ||
837 | static inline void cmd_frob(struct Command_Entry *cmd, struct scsi_cmnd *Cmnd, | |
838 | struct qlogicpti *qpti) | |
839 | { | |
840 | memset(cmd, 0, sizeof(struct Command_Entry)); | |
841 | cmd->hdr.entry_cnt = 1; | |
842 | cmd->hdr.entry_type = ENTRY_COMMAND; | |
843 | cmd->target_id = Cmnd->device->id; | |
844 | cmd->target_lun = Cmnd->device->lun; | |
845 | cmd->cdb_length = Cmnd->cmd_len; | |
846 | cmd->control_flags = 0; | |
847 | if (Cmnd->device->tagged_supported) { | |
848 | if (qpti->cmd_count[Cmnd->device->id] == 0) | |
849 | qpti->tag_ages[Cmnd->device->id] = jiffies; | |
60c904ae | 850 | if (time_after(jiffies, qpti->tag_ages[Cmnd->device->id] + (5*HZ))) { |
1da177e4 LT |
851 | cmd->control_flags = CFLAG_ORDERED_TAG; |
852 | qpti->tag_ages[Cmnd->device->id] = jiffies; | |
853 | } else | |
854 | cmd->control_flags = CFLAG_SIMPLE_TAG; | |
855 | } | |
856 | if ((Cmnd->cmnd[0] == WRITE_6) || | |
857 | (Cmnd->cmnd[0] == WRITE_10) || | |
858 | (Cmnd->cmnd[0] == WRITE_12)) | |
859 | cmd->control_flags |= CFLAG_WRITE; | |
860 | else | |
861 | cmd->control_flags |= CFLAG_READ; | |
862 | cmd->time_out = 30; | |
863 | memcpy(cmd->cdb, Cmnd->cmnd, Cmnd->cmd_len); | |
864 | } | |
865 | ||
866 | /* Do it to it baby. */ | |
867 | static inline int load_cmd(struct scsi_cmnd *Cmnd, struct Command_Entry *cmd, | |
868 | struct qlogicpti *qpti, u_int in_ptr, u_int out_ptr) | |
869 | { | |
870 | struct dataseg *ds; | |
871 | struct scatterlist *sg; | |
872 | int i, n; | |
873 | ||
874 | if (Cmnd->use_sg) { | |
875 | int sg_count; | |
876 | ||
877 | sg = (struct scatterlist *) Cmnd->buffer; | |
878 | sg_count = sbus_map_sg(qpti->sdev, sg, Cmnd->use_sg, Cmnd->sc_data_direction); | |
879 | ||
880 | ds = cmd->dataseg; | |
881 | cmd->segment_cnt = sg_count; | |
882 | ||
883 | /* Fill in first four sg entries: */ | |
884 | n = sg_count; | |
885 | if (n > 4) | |
886 | n = 4; | |
887 | for (i = 0; i < n; i++, sg++) { | |
888 | ds[i].d_base = sg_dma_address(sg); | |
889 | ds[i].d_count = sg_dma_len(sg); | |
890 | } | |
891 | sg_count -= 4; | |
892 | while (sg_count > 0) { | |
893 | struct Continuation_Entry *cont; | |
894 | ||
895 | ++cmd->hdr.entry_cnt; | |
896 | cont = (struct Continuation_Entry *) &qpti->req_cpu[in_ptr]; | |
897 | in_ptr = NEXT_REQ_PTR(in_ptr); | |
898 | if (in_ptr == out_ptr) | |
899 | return -1; | |
900 | ||
901 | cont->hdr.entry_type = ENTRY_CONTINUATION; | |
902 | cont->hdr.entry_cnt = 0; | |
903 | cont->hdr.sys_def_1 = 0; | |
904 | cont->hdr.flags = 0; | |
905 | cont->reserved = 0; | |
906 | ds = cont->dataseg; | |
907 | n = sg_count; | |
908 | if (n > 7) | |
909 | n = 7; | |
910 | for (i = 0; i < n; i++, sg++) { | |
911 | ds[i].d_base = sg_dma_address(sg); | |
912 | ds[i].d_count = sg_dma_len(sg); | |
913 | } | |
914 | sg_count -= n; | |
915 | } | |
916 | } else if (Cmnd->request_bufflen) { | |
917 | Cmnd->SCp.ptr = (char *)(unsigned long) | |
918 | sbus_map_single(qpti->sdev, | |
919 | Cmnd->request_buffer, | |
920 | Cmnd->request_bufflen, | |
921 | Cmnd->sc_data_direction); | |
922 | ||
923 | cmd->dataseg[0].d_base = (u32) ((unsigned long)Cmnd->SCp.ptr); | |
924 | cmd->dataseg[0].d_count = Cmnd->request_bufflen; | |
925 | cmd->segment_cnt = 1; | |
926 | } else { | |
927 | cmd->dataseg[0].d_base = 0; | |
928 | cmd->dataseg[0].d_count = 0; | |
929 | cmd->segment_cnt = 1; /* Shouldn't this be 0? */ | |
930 | } | |
931 | ||
932 | /* Committed, record Scsi_Cmd so we can find it later. */ | |
933 | cmd->handle = in_ptr; | |
934 | qpti->cmd_slots[in_ptr] = Cmnd; | |
935 | ||
936 | qpti->cmd_count[Cmnd->device->id]++; | |
937 | sbus_writew(in_ptr, qpti->qregs + MBOX4); | |
938 | qpti->req_in_ptr = in_ptr; | |
939 | ||
940 | return in_ptr; | |
941 | } | |
942 | ||
943 | static inline void update_can_queue(struct Scsi_Host *host, u_int in_ptr, u_int out_ptr) | |
944 | { | |
945 | /* Temporary workaround until bug is found and fixed (one bug has been found | |
946 | already, but fixing it makes things even worse) -jj */ | |
947 | int num_free = QLOGICPTI_REQ_QUEUE_LEN - REQ_QUEUE_DEPTH(in_ptr, out_ptr) - 64; | |
948 | host->can_queue = host->host_busy + num_free; | |
949 | host->sg_tablesize = QLOGICPTI_MAX_SG(num_free); | |
950 | } | |
951 | ||
f75884d2 DM |
952 | static unsigned int scsi_rbuf_get(struct scsi_cmnd *cmd, unsigned char **buf_out) |
953 | { | |
954 | unsigned char *buf; | |
955 | unsigned int buflen; | |
956 | ||
957 | if (cmd->use_sg) { | |
958 | struct scatterlist *sg; | |
959 | ||
960 | sg = (struct scatterlist *) cmd->request_buffer; | |
961 | buf = kmap_atomic(sg->page, KM_IRQ0) + sg->offset; | |
962 | buflen = sg->length; | |
963 | } else { | |
964 | buf = cmd->request_buffer; | |
965 | buflen = cmd->request_bufflen; | |
966 | } | |
967 | ||
968 | *buf_out = buf; | |
969 | return buflen; | |
970 | } | |
971 | ||
972 | static void scsi_rbuf_put(struct scsi_cmnd *cmd, unsigned char *buf) | |
973 | { | |
974 | if (cmd->use_sg) { | |
975 | struct scatterlist *sg; | |
976 | ||
977 | sg = (struct scatterlist *) cmd->request_buffer; | |
978 | kunmap_atomic(buf - sg->offset, KM_IRQ0); | |
979 | } | |
980 | } | |
981 | ||
1da177e4 LT |
982 | /* |
983 | * Until we scan the entire bus with inquiries, go throught this fella... | |
984 | */ | |
985 | static void ourdone(struct scsi_cmnd *Cmnd) | |
986 | { | |
987 | struct qlogicpti *qpti = (struct qlogicpti *) Cmnd->device->host->hostdata; | |
988 | int tgt = Cmnd->device->id; | |
989 | void (*done) (struct scsi_cmnd *); | |
990 | ||
991 | /* This grot added by DaveM, blame him for ugliness. | |
992 | * The issue is that in the 2.3.x driver we use the | |
993 | * host_scribble portion of the scsi command as a | |
994 | * completion linked list at interrupt service time, | |
995 | * so we have to store the done function pointer elsewhere. | |
996 | */ | |
997 | done = (void (*)(struct scsi_cmnd *)) | |
998 | (((unsigned long) Cmnd->SCp.Message) | |
999 | #ifdef __sparc_v9__ | |
1000 | | ((unsigned long) Cmnd->SCp.Status << 32UL) | |
1001 | #endif | |
1002 | ); | |
1003 | ||
1004 | if ((qpti->sbits & (1 << tgt)) == 0) { | |
1005 | int ok = host_byte(Cmnd->result) == DID_OK; | |
1006 | if (Cmnd->cmnd[0] == 0x12 && ok) { | |
1007 | unsigned char *iqd; | |
f75884d2 | 1008 | unsigned int iqd_len; |
1da177e4 | 1009 | |
f75884d2 | 1010 | iqd_len = scsi_rbuf_get(Cmnd, &iqd); |
1da177e4 LT |
1011 | |
1012 | /* tags handled in midlayer */ | |
1013 | /* enable sync mode? */ | |
1014 | if (iqd[7] & 0x10) { | |
1015 | qpti->dev_param[tgt].device_flags |= 0x10; | |
1016 | } else { | |
1017 | qpti->dev_param[tgt].synchronous_offset = 0; | |
1018 | qpti->dev_param[tgt].synchronous_period = 0; | |
1019 | } | |
1020 | /* are we wide capable? */ | |
1021 | if (iqd[7] & 0x20) { | |
1022 | qpti->dev_param[tgt].device_flags |= 0x20; | |
1023 | } | |
f75884d2 DM |
1024 | |
1025 | scsi_rbuf_put(Cmnd, iqd); | |
1026 | ||
1da177e4 LT |
1027 | qpti->sbits |= (1 << tgt); |
1028 | } else if (!ok) { | |
1029 | qpti->sbits |= (1 << tgt); | |
1030 | } | |
1031 | } | |
1032 | done(Cmnd); | |
1033 | } | |
1034 | ||
1035 | static int qlogicpti_queuecommand(struct scsi_cmnd *Cmnd, void (*done)(struct scsi_cmnd *)); | |
1036 | ||
1037 | static int qlogicpti_queuecommand_slow(struct scsi_cmnd *Cmnd, | |
1038 | void (*done)(struct scsi_cmnd *)) | |
1039 | { | |
1040 | struct qlogicpti *qpti = (struct qlogicpti *) Cmnd->device->host->hostdata; | |
1041 | ||
1042 | /* | |
1043 | * done checking this host adapter? | |
1044 | * If not, then rewrite the command | |
1045 | * to finish through ourdone so we | |
1046 | * can peek at Inquiry data results. | |
1047 | */ | |
1048 | if (qpti->sbits && qpti->sbits != 0xffff) { | |
1049 | /* See above about in ourdone this ugliness... */ | |
1050 | Cmnd->SCp.Message = ((unsigned long)done) & 0xffffffff; | |
1051 | #ifdef CONFIG_SPARC64 | |
1052 | Cmnd->SCp.Status = ((unsigned long)done >> 32UL) & 0xffffffff; | |
1053 | #endif | |
1054 | return qlogicpti_queuecommand(Cmnd, ourdone); | |
1055 | } | |
1056 | ||
1057 | /* | |
1058 | * We've peeked at all targets for this bus- time | |
1059 | * to set parameters for devices for real now. | |
1060 | */ | |
1061 | if (qpti->sbits == 0xffff) { | |
1062 | int i; | |
1063 | for(i = 0; i < MAX_TARGETS; i++) { | |
1064 | u_short param[6]; | |
1065 | param[0] = MBOX_SET_TARGET_PARAMS; | |
1066 | param[1] = (i << 8); | |
1067 | param[2] = (qpti->dev_param[i].device_flags << 8); | |
1068 | if (qpti->dev_param[i].device_flags & 0x10) { | |
1069 | param[3] = (qpti->dev_param[i].synchronous_offset << 8) | | |
1070 | qpti->dev_param[i].synchronous_period; | |
1071 | } else { | |
1072 | param[3] = 0; | |
1073 | } | |
1074 | (void) qlogicpti_mbox_command(qpti, param, 0); | |
1075 | } | |
1076 | /* | |
1077 | * set to zero so any traverse through ourdone | |
1078 | * doesn't start the whole process again, | |
1079 | */ | |
1080 | qpti->sbits = 0; | |
1081 | } | |
1082 | ||
1083 | /* check to see if we're done with all adapters... */ | |
1084 | for (qpti = qptichain; qpti != NULL; qpti = qpti->next) { | |
1085 | if (qpti->sbits) { | |
1086 | break; | |
1087 | } | |
1088 | } | |
1089 | ||
1090 | /* | |
1091 | * if we hit the end of the chain w/o finding adapters still | |
1092 | * capability-configuring, then we're done with all adapters | |
1093 | * and can rock on.. | |
1094 | */ | |
1095 | if (qpti == NULL) | |
1096 | Cmnd->device->host->hostt->queuecommand = qlogicpti_queuecommand; | |
1097 | ||
1098 | return qlogicpti_queuecommand(Cmnd, done); | |
1099 | } | |
1100 | ||
1101 | /* | |
1102 | * The middle SCSI layer ensures that queuecommand never gets invoked | |
1103 | * concurrently with itself or the interrupt handler (though the | |
1104 | * interrupt handler may call this routine as part of | |
1105 | * request-completion handling). | |
1106 | * | |
1107 | * "This code must fly." -davem | |
1108 | */ | |
1109 | static int qlogicpti_queuecommand(struct scsi_cmnd *Cmnd, void (*done)(struct scsi_cmnd *)) | |
1110 | { | |
1111 | struct Scsi_Host *host = Cmnd->device->host; | |
1112 | struct qlogicpti *qpti = (struct qlogicpti *) host->hostdata; | |
1113 | struct Command_Entry *cmd; | |
1114 | u_int out_ptr; | |
1115 | int in_ptr; | |
1116 | ||
1117 | Cmnd->scsi_done = done; | |
1118 | ||
1119 | in_ptr = qpti->req_in_ptr; | |
1120 | cmd = (struct Command_Entry *) &qpti->req_cpu[in_ptr]; | |
1121 | out_ptr = sbus_readw(qpti->qregs + MBOX4); | |
1122 | in_ptr = NEXT_REQ_PTR(in_ptr); | |
1123 | if (in_ptr == out_ptr) | |
1124 | goto toss_command; | |
1125 | ||
1126 | if (qpti->send_marker) { | |
1127 | marker_frob(cmd); | |
1128 | qpti->send_marker = 0; | |
1129 | if (NEXT_REQ_PTR(in_ptr) == out_ptr) { | |
1130 | sbus_writew(in_ptr, qpti->qregs + MBOX4); | |
1131 | qpti->req_in_ptr = in_ptr; | |
1132 | goto toss_command; | |
1133 | } | |
1134 | cmd = (struct Command_Entry *) &qpti->req_cpu[in_ptr]; | |
1135 | in_ptr = NEXT_REQ_PTR(in_ptr); | |
1136 | } | |
1137 | cmd_frob(cmd, Cmnd, qpti); | |
1138 | if ((in_ptr = load_cmd(Cmnd, cmd, qpti, in_ptr, out_ptr)) == -1) | |
1139 | goto toss_command; | |
1140 | ||
1141 | update_can_queue(host, in_ptr, out_ptr); | |
1142 | ||
1143 | return 0; | |
1144 | ||
1145 | toss_command: | |
1146 | printk(KERN_EMERG "qlogicpti%d: request queue overflow\n", | |
1147 | qpti->qpti_id); | |
1148 | ||
1149 | /* Unfortunately, unless you use the new EH code, which | |
1150 | * we don't, the midlayer will ignore the return value, | |
1151 | * which is insane. We pick up the pieces like this. | |
1152 | */ | |
1153 | Cmnd->result = DID_BUS_BUSY; | |
1154 | done(Cmnd); | |
1155 | return 1; | |
1156 | } | |
1157 | ||
1158 | static int qlogicpti_return_status(struct Status_Entry *sts, int id) | |
1159 | { | |
1160 | int host_status = DID_ERROR; | |
1161 | ||
1162 | switch (sts->completion_status) { | |
1163 | case CS_COMPLETE: | |
1164 | host_status = DID_OK; | |
1165 | break; | |
1166 | case CS_INCOMPLETE: | |
1167 | if (!(sts->state_flags & SF_GOT_BUS)) | |
1168 | host_status = DID_NO_CONNECT; | |
1169 | else if (!(sts->state_flags & SF_GOT_TARGET)) | |
1170 | host_status = DID_BAD_TARGET; | |
1171 | else if (!(sts->state_flags & SF_SENT_CDB)) | |
1172 | host_status = DID_ERROR; | |
1173 | else if (!(sts->state_flags & SF_TRANSFERRED_DATA)) | |
1174 | host_status = DID_ERROR; | |
1175 | else if (!(sts->state_flags & SF_GOT_STATUS)) | |
1176 | host_status = DID_ERROR; | |
1177 | else if (!(sts->state_flags & SF_GOT_SENSE)) | |
1178 | host_status = DID_ERROR; | |
1179 | break; | |
1180 | case CS_DMA_ERROR: | |
1181 | case CS_TRANSPORT_ERROR: | |
1182 | host_status = DID_ERROR; | |
1183 | break; | |
1184 | case CS_RESET_OCCURRED: | |
1185 | case CS_BUS_RESET: | |
1186 | host_status = DID_RESET; | |
1187 | break; | |
1188 | case CS_ABORTED: | |
1189 | host_status = DID_ABORT; | |
1190 | break; | |
1191 | case CS_TIMEOUT: | |
1192 | host_status = DID_TIME_OUT; | |
1193 | break; | |
1194 | case CS_DATA_OVERRUN: | |
1195 | case CS_COMMAND_OVERRUN: | |
1196 | case CS_STATUS_OVERRUN: | |
1197 | case CS_BAD_MESSAGE: | |
1198 | case CS_NO_MESSAGE_OUT: | |
1199 | case CS_EXT_ID_FAILED: | |
1200 | case CS_IDE_MSG_FAILED: | |
1201 | case CS_ABORT_MSG_FAILED: | |
1202 | case CS_NOP_MSG_FAILED: | |
1203 | case CS_PARITY_ERROR_MSG_FAILED: | |
1204 | case CS_DEVICE_RESET_MSG_FAILED: | |
1205 | case CS_ID_MSG_FAILED: | |
1206 | case CS_UNEXP_BUS_FREE: | |
1207 | host_status = DID_ERROR; | |
1208 | break; | |
1209 | case CS_DATA_UNDERRUN: | |
1210 | host_status = DID_OK; | |
1211 | break; | |
1212 | default: | |
1213 | printk(KERN_EMERG "qpti%d: unknown completion status 0x%04x\n", | |
1214 | id, sts->completion_status); | |
1215 | host_status = DID_ERROR; | |
1216 | break; | |
1217 | } | |
1218 | ||
1219 | return (sts->scsi_status & STATUS_MASK) | (host_status << 16); | |
1220 | } | |
1221 | ||
1222 | static struct scsi_cmnd *qlogicpti_intr_handler(struct qlogicpti *qpti) | |
1223 | { | |
1224 | struct scsi_cmnd *Cmnd, *done_queue = NULL; | |
1225 | struct Status_Entry *sts; | |
1226 | u_int in_ptr, out_ptr; | |
1227 | ||
1228 | if (!(sbus_readw(qpti->qregs + SBUS_STAT) & SBUS_STAT_RINT)) | |
1229 | return NULL; | |
1230 | ||
1231 | in_ptr = sbus_readw(qpti->qregs + MBOX5); | |
1232 | sbus_writew(HCCTRL_CRIRQ, qpti->qregs + HCCTRL); | |
1233 | if (sbus_readw(qpti->qregs + SBUS_SEMAPHORE) & SBUS_SEMAPHORE_LCK) { | |
1234 | switch (sbus_readw(qpti->qregs + MBOX0)) { | |
1235 | case ASYNC_SCSI_BUS_RESET: | |
1236 | case EXECUTION_TIMEOUT_RESET: | |
1237 | qpti->send_marker = 1; | |
1238 | break; | |
1239 | case INVALID_COMMAND: | |
1240 | case HOST_INTERFACE_ERROR: | |
1241 | case COMMAND_ERROR: | |
1242 | case COMMAND_PARAM_ERROR: | |
1243 | break; | |
1244 | }; | |
1245 | sbus_writew(0, qpti->qregs + SBUS_SEMAPHORE); | |
1246 | } | |
1247 | ||
1248 | /* This looks like a network driver! */ | |
1249 | out_ptr = qpti->res_out_ptr; | |
1250 | while (out_ptr != in_ptr) { | |
1251 | u_int cmd_slot; | |
1252 | ||
1253 | sts = (struct Status_Entry *) &qpti->res_cpu[out_ptr]; | |
1254 | out_ptr = NEXT_RES_PTR(out_ptr); | |
1255 | ||
1256 | /* We store an index in the handle, not the pointer in | |
1257 | * some form. This avoids problems due to the fact | |
1258 | * that the handle provided is only 32-bits. -DaveM | |
1259 | */ | |
1260 | cmd_slot = sts->handle; | |
1261 | Cmnd = qpti->cmd_slots[cmd_slot]; | |
1262 | qpti->cmd_slots[cmd_slot] = NULL; | |
1263 | ||
1264 | if (sts->completion_status == CS_RESET_OCCURRED || | |
1265 | sts->completion_status == CS_ABORTED || | |
1266 | (sts->status_flags & STF_BUS_RESET)) | |
1267 | qpti->send_marker = 1; | |
1268 | ||
1269 | if (sts->state_flags & SF_GOT_SENSE) | |
1270 | memcpy(Cmnd->sense_buffer, sts->req_sense_data, | |
1271 | sizeof(Cmnd->sense_buffer)); | |
1272 | ||
1273 | if (sts->hdr.entry_type == ENTRY_STATUS) | |
1274 | Cmnd->result = | |
1275 | qlogicpti_return_status(sts, qpti->qpti_id); | |
1276 | else | |
1277 | Cmnd->result = DID_ERROR << 16; | |
1278 | ||
1279 | if (Cmnd->use_sg) { | |
1280 | sbus_unmap_sg(qpti->sdev, | |
1281 | (struct scatterlist *)Cmnd->buffer, | |
1282 | Cmnd->use_sg, | |
1283 | Cmnd->sc_data_direction); | |
1284 | } else { | |
1285 | sbus_unmap_single(qpti->sdev, | |
1286 | (__u32)((unsigned long)Cmnd->SCp.ptr), | |
1287 | Cmnd->request_bufflen, | |
1288 | Cmnd->sc_data_direction); | |
1289 | } | |
1290 | qpti->cmd_count[Cmnd->device->id]--; | |
1291 | sbus_writew(out_ptr, qpti->qregs + MBOX5); | |
1292 | Cmnd->host_scribble = (unsigned char *) done_queue; | |
1293 | done_queue = Cmnd; | |
1294 | } | |
1295 | qpti->res_out_ptr = out_ptr; | |
1296 | ||
1297 | return done_queue; | |
1298 | } | |
1299 | ||
1300 | static irqreturn_t qpti_intr(int irq, void *dev_id, struct pt_regs *regs) | |
1301 | { | |
1302 | struct qlogicpti *qpti = dev_id; | |
1303 | unsigned long flags; | |
1304 | struct scsi_cmnd *dq; | |
1305 | ||
1306 | spin_lock_irqsave(qpti->qhost->host_lock, flags); | |
1307 | dq = qlogicpti_intr_handler(qpti); | |
1308 | ||
1309 | if (dq != NULL) { | |
1310 | do { | |
1311 | struct scsi_cmnd *next; | |
1312 | ||
1313 | next = (struct scsi_cmnd *) dq->host_scribble; | |
1314 | dq->scsi_done(dq); | |
1315 | dq = next; | |
1316 | } while (dq != NULL); | |
1317 | } | |
1318 | spin_unlock_irqrestore(qpti->qhost->host_lock, flags); | |
1319 | ||
1320 | return IRQ_HANDLED; | |
1321 | } | |
1322 | ||
1323 | static int qlogicpti_abort(struct scsi_cmnd *Cmnd) | |
1324 | { | |
1325 | u_short param[6]; | |
1326 | struct Scsi_Host *host = Cmnd->device->host; | |
1327 | struct qlogicpti *qpti = (struct qlogicpti *) host->hostdata; | |
1328 | int return_status = SUCCESS; | |
1329 | u32 cmd_cookie; | |
1330 | int i; | |
1331 | ||
1332 | printk(KERN_WARNING "qlogicpti : Aborting cmd for tgt[%d] lun[%d]\n", | |
1333 | (int)Cmnd->device->id, (int)Cmnd->device->lun); | |
1334 | ||
1335 | qlogicpti_disable_irqs(qpti); | |
1336 | ||
1337 | /* Find the 32-bit cookie we gave to the firmware for | |
1338 | * this command. | |
1339 | */ | |
1340 | for (i = 0; i < QLOGICPTI_REQ_QUEUE_LEN + 1; i++) | |
1341 | if (qpti->cmd_slots[i] == Cmnd) | |
1342 | break; | |
1343 | cmd_cookie = i; | |
1344 | ||
1345 | param[0] = MBOX_ABORT; | |
1346 | param[1] = (((u_short) Cmnd->device->id) << 8) | Cmnd->device->lun; | |
1347 | param[2] = cmd_cookie >> 16; | |
1348 | param[3] = cmd_cookie & 0xffff; | |
1349 | if (qlogicpti_mbox_command(qpti, param, 0) || | |
1350 | (param[0] != MBOX_COMMAND_COMPLETE)) { | |
1351 | printk(KERN_EMERG "qlogicpti : scsi abort failure: %x\n", param[0]); | |
1352 | return_status = FAILED; | |
1353 | } | |
1354 | ||
1355 | qlogicpti_enable_irqs(qpti); | |
1356 | ||
1357 | return return_status; | |
1358 | } | |
1359 | ||
1360 | static int qlogicpti_reset(struct scsi_cmnd *Cmnd) | |
1361 | { | |
1362 | u_short param[6]; | |
1363 | struct Scsi_Host *host = Cmnd->device->host; | |
1364 | struct qlogicpti *qpti = (struct qlogicpti *) host->hostdata; | |
1365 | int return_status = SUCCESS; | |
1366 | ||
1367 | printk(KERN_WARNING "qlogicpti : Resetting SCSI bus!\n"); | |
1368 | ||
1369 | qlogicpti_disable_irqs(qpti); | |
1370 | ||
1371 | param[0] = MBOX_BUS_RESET; | |
1372 | param[1] = qpti->host_param.bus_reset_delay; | |
1373 | if (qlogicpti_mbox_command(qpti, param, 0) || | |
1374 | (param[0] != MBOX_COMMAND_COMPLETE)) { | |
1375 | printk(KERN_EMERG "qlogicisp : scsi bus reset failure: %x\n", param[0]); | |
1376 | return_status = FAILED; | |
1377 | } | |
1378 | ||
1379 | qlogicpti_enable_irqs(qpti); | |
1380 | ||
1381 | return return_status; | |
1382 | } | |
1383 | ||
3d4253d9 DM |
1384 | static struct scsi_host_template qpti_template = { |
1385 | .module = THIS_MODULE, | |
1386 | .name = "qlogicpti", | |
1da177e4 LT |
1387 | .info = qlogicpti_info, |
1388 | .queuecommand = qlogicpti_queuecommand_slow, | |
1389 | .eh_abort_handler = qlogicpti_abort, | |
1390 | .eh_bus_reset_handler = qlogicpti_reset, | |
1391 | .can_queue = QLOGICPTI_REQ_QUEUE_LEN, | |
1392 | .this_id = 7, | |
1393 | .sg_tablesize = QLOGICPTI_MAX_SG(QLOGICPTI_REQ_QUEUE_LEN), | |
1394 | .cmd_per_lun = 1, | |
1395 | .use_clustering = ENABLE_CLUSTERING, | |
1396 | }; | |
1397 | ||
3d4253d9 DM |
1398 | static int __devinit qpti_sbus_probe(struct of_device *dev, const struct of_device_id *match) |
1399 | { | |
1400 | static int nqptis; | |
1401 | struct sbus_dev *sdev = to_sbus_device(&dev->dev); | |
1402 | struct device_node *dp = dev->node; | |
1403 | struct scsi_host_template *tpnt = match->data; | |
1404 | struct Scsi_Host *host; | |
1405 | struct qlogicpti *qpti; | |
1406 | char *fcode; | |
1407 | ||
1408 | /* Sometimes Antares cards come up not completely | |
1409 | * setup, and we get a report of a zero IRQ. | |
1410 | */ | |
1411 | if (sdev->irqs[0] == 0) | |
1412 | return -ENODEV; | |
1413 | ||
1414 | host = scsi_host_alloc(tpnt, sizeof(struct qlogicpti)); | |
1415 | if (!host) | |
1416 | return -ENOMEM; | |
1417 | ||
1418 | qpti = (struct qlogicpti *) host->hostdata; | |
1419 | ||
1420 | host->max_id = MAX_TARGETS; | |
1421 | qpti->qhost = host; | |
1422 | qpti->sdev = sdev; | |
1423 | qpti->qpti_id = nqptis; | |
1424 | qpti->prom_node = sdev->prom_node; | |
1425 | strcpy(qpti->prom_name, sdev->ofdev.node->name); | |
1426 | qpti->is_pti = strcmp(qpti->prom_name, "QLGC,isp"); | |
1427 | ||
1428 | if (qpti_map_regs(qpti) < 0) | |
1429 | goto fail_unlink; | |
1430 | ||
1431 | if (qpti_register_irq(qpti) < 0) | |
1432 | goto fail_unmap_regs; | |
1433 | ||
1434 | qpti_get_scsi_id(qpti); | |
1435 | qpti_get_bursts(qpti); | |
1436 | qpti_get_clock(qpti); | |
1437 | ||
1438 | /* Clear out scsi_cmnd array. */ | |
1439 | memset(qpti->cmd_slots, 0, sizeof(qpti->cmd_slots)); | |
1440 | ||
1441 | if (qpti_map_queues(qpti) < 0) | |
1442 | goto fail_free_irq; | |
1443 | ||
1444 | /* Load the firmware. */ | |
1445 | if (qlogicpti_load_firmware(qpti)) | |
1446 | goto fail_unmap_queues; | |
1447 | if (qpti->is_pti) { | |
1448 | /* Check the PTI status reg. */ | |
1449 | if (qlogicpti_verify_tmon(qpti)) | |
1450 | goto fail_unmap_queues; | |
1451 | } | |
1452 | ||
1453 | /* Reset the ISP and init res/req queues. */ | |
1454 | if (qlogicpti_reset_hardware(host)) | |
1455 | goto fail_unmap_queues; | |
1456 | ||
1457 | if (scsi_add_host(host, &dev->dev)) | |
1458 | goto fail_unmap_queues; | |
1459 | ||
1460 | printk("(Firmware v%d.%d.%d)", qpti->fware_majrev, | |
1461 | qpti->fware_minrev, qpti->fware_micrev); | |
1462 | ||
1463 | fcode = of_get_property(dp, "isp-fcode", NULL); | |
1464 | if (fcode && fcode[0]) | |
1465 | printk("(Firmware %s)", fcode); | |
1466 | if (of_find_property(dp, "differential", NULL) != NULL) | |
1467 | qpti->differential = 1; | |
1468 | ||
1469 | printk (" [%s Wide, using %s interface]\n", | |
1470 | (qpti->ultra ? "Ultra" : "Fast"), | |
1471 | (qpti->differential ? "differential" : "single ended")); | |
1472 | ||
1473 | dev_set_drvdata(&sdev->ofdev.dev, qpti); | |
1474 | ||
1475 | qpti_chain_add(qpti); | |
1476 | ||
1477 | scsi_scan_host(host); | |
1478 | nqptis++; | |
1479 | ||
1480 | return 0; | |
1481 | ||
1482 | fail_unmap_queues: | |
1483 | #define QSIZE(entries) (((entries) + 1) * QUEUE_ENTRY_LEN) | |
1484 | sbus_free_consistent(qpti->sdev, | |
1485 | QSIZE(RES_QUEUE_LEN), | |
1486 | qpti->res_cpu, qpti->res_dvma); | |
1487 | sbus_free_consistent(qpti->sdev, | |
1488 | QSIZE(QLOGICPTI_REQ_QUEUE_LEN), | |
1489 | qpti->req_cpu, qpti->req_dvma); | |
1490 | #undef QSIZE | |
1491 | ||
1492 | fail_unmap_regs: | |
1493 | sbus_iounmap(qpti->qregs, | |
1494 | qpti->sdev->reg_addrs[0].reg_size); | |
1495 | if (qpti->is_pti) | |
1496 | sbus_iounmap(qpti->sreg, sizeof(unsigned char)); | |
1497 | ||
1498 | fail_free_irq: | |
1499 | free_irq(qpti->irq, qpti); | |
1500 | ||
1501 | fail_unlink: | |
1502 | scsi_host_put(host); | |
1503 | ||
1504 | return -ENODEV; | |
1505 | } | |
1506 | ||
1507 | static int __devexit qpti_sbus_remove(struct of_device *dev) | |
1508 | { | |
1509 | struct qlogicpti *qpti = dev_get_drvdata(&dev->dev); | |
1510 | ||
1511 | qpti_chain_del(qpti); | |
1512 | ||
1513 | scsi_remove_host(qpti->qhost); | |
1514 | ||
1515 | /* Shut up the card. */ | |
1516 | sbus_writew(0, qpti->qregs + SBUS_CTRL); | |
1517 | ||
1518 | /* Free IRQ handler and unmap Qlogic,ISP and PTI status regs. */ | |
1519 | free_irq(qpti->irq, qpti); | |
1520 | ||
1521 | #define QSIZE(entries) (((entries) + 1) * QUEUE_ENTRY_LEN) | |
1522 | sbus_free_consistent(qpti->sdev, | |
1523 | QSIZE(RES_QUEUE_LEN), | |
1524 | qpti->res_cpu, qpti->res_dvma); | |
1525 | sbus_free_consistent(qpti->sdev, | |
1526 | QSIZE(QLOGICPTI_REQ_QUEUE_LEN), | |
1527 | qpti->req_cpu, qpti->req_dvma); | |
1528 | #undef QSIZE | |
1529 | ||
1530 | sbus_iounmap(qpti->qregs, qpti->sdev->reg_addrs[0].reg_size); | |
1531 | if (qpti->is_pti) | |
1532 | sbus_iounmap(qpti->sreg, sizeof(unsigned char)); | |
1533 | ||
1534 | scsi_host_put(qpti->qhost); | |
1535 | ||
1536 | return 0; | |
1537 | } | |
1538 | ||
1539 | static struct of_device_id qpti_match[] = { | |
1540 | { | |
1541 | .name = "ptisp", | |
1542 | .data = &qpti_template, | |
1543 | }, | |
1544 | { | |
1545 | .name = "PTI,ptisp", | |
1546 | .data = &qpti_template, | |
1547 | }, | |
1548 | { | |
1549 | .name = "QLGC,isp", | |
1550 | .data = &qpti_template, | |
1551 | }, | |
1552 | { | |
1553 | .name = "SUNW,isp", | |
1554 | .data = &qpti_template, | |
1555 | }, | |
1556 | {}, | |
1557 | }; | |
1558 | MODULE_DEVICE_TABLE(of, qpti_match); | |
1559 | ||
1560 | static struct of_platform_driver qpti_sbus_driver = { | |
1561 | .name = "qpti", | |
1562 | .match_table = qpti_match, | |
1563 | .probe = qpti_sbus_probe, | |
1564 | .remove = __devexit_p(qpti_sbus_remove), | |
1565 | }; | |
1da177e4 | 1566 | |
3d4253d9 DM |
1567 | static int __init qpti_init(void) |
1568 | { | |
1569 | return of_register_driver(&qpti_sbus_driver, &sbus_bus_type); | |
1570 | } | |
1571 | ||
1572 | static void __exit qpti_exit(void) | |
1573 | { | |
1574 | of_unregister_driver(&qpti_sbus_driver); | |
1575 | } | |
1da177e4 | 1576 | |
3d4253d9 DM |
1577 | MODULE_DESCRIPTION("QlogicISP SBUS driver"); |
1578 | MODULE_AUTHOR("David S. Miller (davem@davemloft.net)"); | |
1da177e4 | 1579 | MODULE_LICENSE("GPL"); |
3d4253d9 | 1580 | MODULE_VERSION("2.0"); |
1da177e4 | 1581 | |
3d4253d9 DM |
1582 | module_init(qpti_init); |
1583 | module_exit(qpti_exit); |