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1da177e4 LT |
1 | /* |
2 | * sym53c500_cs.c Bob Tracy (rct@frus.com) | |
3 | * | |
4 | * A rewrite of the pcmcia-cs add-on driver for newer (circa 1997) | |
5 | * New Media Bus Toaster PCMCIA SCSI cards using the Symbios Logic | |
6 | * 53c500 controller: intended for use with 2.6 and later kernels. | |
7 | * The pcmcia-cs add-on version of this driver is not supported | |
8 | * beyond 2.4. It consisted of three files with history/copyright | |
9 | * information as follows: | |
10 | * | |
11 | * SYM53C500.h | |
12 | * Bob Tracy (rct@frus.com) | |
13 | * Original by Tom Corner (tcorner@via.at). | |
14 | * Adapted from NCR53c406a.h which is Copyrighted (C) 1994 | |
15 | * Normunds Saumanis (normunds@rx.tech.swh.lv) | |
16 | * | |
17 | * SYM53C500.c | |
18 | * Bob Tracy (rct@frus.com) | |
19 | * Original driver by Tom Corner (tcorner@via.at) was adapted | |
20 | * from NCR53c406a.c which is Copyrighted (C) 1994, 1995, 1996 | |
21 | * Normunds Saumanis (normunds@fi.ibm.com) | |
22 | * | |
23 | * sym53c500.c | |
24 | * Bob Tracy (rct@frus.com) | |
25 | * Original by Tom Corner (tcorner@via.at) was adapted from a | |
26 | * driver for the Qlogic SCSI card written by | |
27 | * David Hinds (dhinds@allegro.stanford.edu). | |
28 | * | |
29 | * This program is free software; you can redistribute it and/or modify it | |
30 | * under the terms of the GNU General Public License as published by the | |
31 | * Free Software Foundation; either version 2, or (at your option) any | |
32 | * later version. | |
33 | * | |
34 | * This program is distributed in the hope that it will be useful, but | |
35 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
36 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
37 | * General Public License for more details. | |
38 | */ | |
39 | ||
40 | #define SYM53C500_DEBUG 0 | |
41 | #define VERBOSE_SYM53C500_DEBUG 0 | |
42 | ||
43 | /* | |
44 | * Set this to 0 if you encounter kernel lockups while transferring | |
45 | * data in PIO mode. Note this can be changed via "sysfs". | |
46 | */ | |
47 | #define USE_FAST_PIO 1 | |
48 | ||
49 | /* =============== End of user configurable parameters ============== */ | |
50 | ||
51 | #include <linux/module.h> | |
52 | #include <linux/moduleparam.h> | |
53 | #include <linux/errno.h> | |
54 | #include <linux/init.h> | |
55 | #include <linux/interrupt.h> | |
56 | #include <linux/kernel.h> | |
57 | #include <linux/sched.h> | |
58 | #include <linux/slab.h> | |
59 | #include <linux/string.h> | |
60 | #include <linux/ioport.h> | |
61 | #include <linux/blkdev.h> | |
62 | #include <linux/spinlock.h> | |
63 | #include <linux/bitops.h> | |
64 | ||
65 | #include <asm/io.h> | |
66 | #include <asm/dma.h> | |
67 | #include <asm/irq.h> | |
68 | ||
69 | #include <scsi/scsi_ioctl.h> | |
70 | #include <scsi/scsi_cmnd.h> | |
71 | #include <scsi/scsi_device.h> | |
72 | #include <scsi/scsi.h> | |
73 | #include <scsi/scsi_host.h> | |
74 | ||
75 | #include <pcmcia/cs_types.h> | |
76 | #include <pcmcia/cs.h> | |
77 | #include <pcmcia/cistpl.h> | |
78 | #include <pcmcia/ds.h> | |
79 | #include <pcmcia/ciscode.h> | |
80 | ||
81 | /* ================================================================== */ | |
82 | ||
83 | #ifdef PCMCIA_DEBUG | |
84 | static int pc_debug = PCMCIA_DEBUG; | |
85 | module_param(pc_debug, int, 0); | |
86 | #define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args) | |
87 | static char *version = | |
88 | "sym53c500_cs.c 0.9c 2004/10/27 (Bob Tracy)"; | |
89 | #else | |
90 | #define DEBUG(n, args...) | |
91 | #endif | |
92 | ||
93 | /* ================================================================== */ | |
94 | ||
95 | #define SYNC_MODE 0 /* Synchronous transfer mode */ | |
96 | ||
97 | /* Default configuration */ | |
98 | #define C1_IMG 0x07 /* ID=7 */ | |
99 | #define C2_IMG 0x48 /* FE SCSI2 */ | |
100 | #define C3_IMG 0x20 /* CDB */ | |
101 | #define C4_IMG 0x04 /* ANE */ | |
102 | #define C5_IMG 0xa4 /* ? changed from b6= AA PI SIE POL */ | |
103 | #define C7_IMG 0x80 /* added for SYM53C500 t. corner */ | |
104 | ||
105 | /* Hardware Registers: offsets from io_port (base) */ | |
106 | ||
107 | /* Control Register Set 0 */ | |
108 | #define TC_LSB 0x00 /* transfer counter lsb */ | |
109 | #define TC_MSB 0x01 /* transfer counter msb */ | |
110 | #define SCSI_FIFO 0x02 /* scsi fifo register */ | |
111 | #define CMD_REG 0x03 /* command register */ | |
112 | #define STAT_REG 0x04 /* status register */ | |
113 | #define DEST_ID 0x04 /* selection/reselection bus id */ | |
114 | #define INT_REG 0x05 /* interrupt status register */ | |
115 | #define SRTIMOUT 0x05 /* select/reselect timeout reg */ | |
116 | #define SEQ_REG 0x06 /* sequence step register */ | |
117 | #define SYNCPRD 0x06 /* synchronous transfer period */ | |
118 | #define FIFO_FLAGS 0x07 /* indicates # of bytes in fifo */ | |
119 | #define SYNCOFF 0x07 /* synchronous offset register */ | |
120 | #define CONFIG1 0x08 /* configuration register */ | |
121 | #define CLKCONV 0x09 /* clock conversion register */ | |
122 | /* #define TESTREG 0x0A */ /* test mode register */ | |
123 | #define CONFIG2 0x0B /* configuration 2 register */ | |
124 | #define CONFIG3 0x0C /* configuration 3 register */ | |
125 | #define CONFIG4 0x0D /* configuration 4 register */ | |
126 | #define TC_HIGH 0x0E /* transfer counter high */ | |
127 | /* #define FIFO_BOTTOM 0x0F */ /* reserve FIFO byte register */ | |
128 | ||
129 | /* Control Register Set 1 */ | |
130 | /* #define JUMPER_SENSE 0x00 */ /* jumper sense port reg (r/w) */ | |
131 | /* #define SRAM_PTR 0x01 */ /* SRAM address pointer reg (r/w) */ | |
132 | /* #define SRAM_DATA 0x02 */ /* SRAM data register (r/w) */ | |
133 | #define PIO_FIFO 0x04 /* PIO FIFO registers (r/w) */ | |
134 | /* #define PIO_FIFO1 0x05 */ /* */ | |
135 | /* #define PIO_FIFO2 0x06 */ /* */ | |
136 | /* #define PIO_FIFO3 0x07 */ /* */ | |
137 | #define PIO_STATUS 0x08 /* PIO status (r/w) */ | |
138 | /* #define ATA_CMD 0x09 */ /* ATA command/status reg (r/w) */ | |
139 | /* #define ATA_ERR 0x0A */ /* ATA features/error reg (r/w) */ | |
140 | #define PIO_FLAG 0x0B /* PIO flag interrupt enable (r/w) */ | |
141 | #define CONFIG5 0x09 /* configuration 5 register */ | |
142 | /* #define SIGNATURE 0x0E */ /* signature register (r) */ | |
143 | /* #define CONFIG6 0x0F */ /* configuration 6 register (r) */ | |
144 | #define CONFIG7 0x0d | |
145 | ||
146 | /* select register set 0 */ | |
147 | #define REG0(x) (outb(C4_IMG, (x) + CONFIG4)) | |
148 | /* select register set 1 */ | |
149 | #define REG1(x) outb(C7_IMG, (x) + CONFIG7); outb(C5_IMG, (x) + CONFIG5) | |
150 | ||
151 | #if SYM53C500_DEBUG | |
152 | #define DEB(x) x | |
153 | #else | |
154 | #define DEB(x) | |
155 | #endif | |
156 | ||
157 | #if VERBOSE_SYM53C500_DEBUG | |
158 | #define VDEB(x) x | |
159 | #else | |
160 | #define VDEB(x) | |
161 | #endif | |
162 | ||
163 | #define LOAD_DMA_COUNT(x, count) \ | |
164 | outb(count & 0xff, (x) + TC_LSB); \ | |
165 | outb((count >> 8) & 0xff, (x) + TC_MSB); \ | |
166 | outb((count >> 16) & 0xff, (x) + TC_HIGH); | |
167 | ||
168 | /* Chip commands */ | |
169 | #define DMA_OP 0x80 | |
170 | ||
171 | #define SCSI_NOP 0x00 | |
172 | #define FLUSH_FIFO 0x01 | |
173 | #define CHIP_RESET 0x02 | |
174 | #define SCSI_RESET 0x03 | |
175 | #define RESELECT 0x40 | |
176 | #define SELECT_NO_ATN 0x41 | |
177 | #define SELECT_ATN 0x42 | |
178 | #define SELECT_ATN_STOP 0x43 | |
179 | #define ENABLE_SEL 0x44 | |
180 | #define DISABLE_SEL 0x45 | |
181 | #define SELECT_ATN3 0x46 | |
182 | #define RESELECT3 0x47 | |
183 | #define TRANSFER_INFO 0x10 | |
184 | #define INIT_CMD_COMPLETE 0x11 | |
185 | #define MSG_ACCEPT 0x12 | |
186 | #define TRANSFER_PAD 0x18 | |
187 | #define SET_ATN 0x1a | |
188 | #define RESET_ATN 0x1b | |
189 | #define SEND_MSG 0x20 | |
190 | #define SEND_STATUS 0x21 | |
191 | #define SEND_DATA 0x22 | |
192 | #define DISCONN_SEQ 0x23 | |
193 | #define TERMINATE_SEQ 0x24 | |
194 | #define TARG_CMD_COMPLETE 0x25 | |
195 | #define DISCONN 0x27 | |
196 | #define RECV_MSG 0x28 | |
197 | #define RECV_CMD 0x29 | |
198 | #define RECV_DATA 0x2a | |
199 | #define RECV_CMD_SEQ 0x2b | |
200 | #define TARGET_ABORT_DMA 0x04 | |
201 | ||
202 | /* ================================================================== */ | |
203 | ||
204 | struct scsi_info_t { | |
205 | dev_link_t link; | |
206 | dev_node_t node; | |
207 | struct Scsi_Host *host; | |
208 | unsigned short manf_id; | |
209 | }; | |
210 | ||
211 | /* | |
212 | * Repository for per-instance host data. | |
213 | */ | |
214 | struct sym53c500_data { | |
215 | struct scsi_cmnd *current_SC; | |
216 | int fast_pio; | |
217 | }; | |
218 | ||
219 | enum Phase { | |
220 | idle, | |
221 | data_out, | |
222 | data_in, | |
223 | command_ph, | |
224 | status_ph, | |
225 | message_out, | |
226 | message_in | |
227 | }; | |
228 | ||
229 | /* ================================================================== */ | |
230 | ||
231 | /* | |
232 | * Global (within this module) variables other than | |
233 | * sym53c500_driver_template (the scsi_host_template). | |
234 | */ | |
235 | static dev_link_t *dev_list; | |
236 | static dev_info_t dev_info = "sym53c500_cs"; | |
237 | ||
238 | /* ================================================================== */ | |
239 | ||
240 | static void | |
241 | chip_init(int io_port) | |
242 | { | |
243 | REG1(io_port); | |
244 | outb(0x01, io_port + PIO_STATUS); | |
245 | outb(0x00, io_port + PIO_FLAG); | |
246 | ||
247 | outb(C4_IMG, io_port + CONFIG4); /* REG0(io_port); */ | |
248 | outb(C3_IMG, io_port + CONFIG3); | |
249 | outb(C2_IMG, io_port + CONFIG2); | |
250 | outb(C1_IMG, io_port + CONFIG1); | |
251 | ||
252 | outb(0x05, io_port + CLKCONV); /* clock conversion factor */ | |
253 | outb(0x9C, io_port + SRTIMOUT); /* Selection timeout */ | |
254 | outb(0x05, io_port + SYNCPRD); /* Synchronous transfer period */ | |
255 | outb(SYNC_MODE, io_port + SYNCOFF); /* synchronous mode */ | |
256 | } | |
257 | ||
258 | static void | |
259 | SYM53C500_int_host_reset(int io_port) | |
260 | { | |
261 | outb(C4_IMG, io_port + CONFIG4); /* REG0(io_port); */ | |
262 | outb(CHIP_RESET, io_port + CMD_REG); | |
263 | outb(SCSI_NOP, io_port + CMD_REG); /* required after reset */ | |
264 | outb(SCSI_RESET, io_port + CMD_REG); | |
265 | chip_init(io_port); | |
266 | } | |
267 | ||
268 | static __inline__ int | |
269 | SYM53C500_pio_read(int fast_pio, int base, unsigned char *request, unsigned int reqlen) | |
270 | { | |
271 | int i; | |
272 | int len; /* current scsi fifo size */ | |
273 | ||
274 | REG1(base); | |
275 | while (reqlen) { | |
276 | i = inb(base + PIO_STATUS); | |
277 | /* VDEB(printk("pio_status=%x\n", i)); */ | |
278 | if (i & 0x80) | |
279 | return 0; | |
280 | ||
281 | switch (i & 0x1e) { | |
282 | default: | |
283 | case 0x10: /* fifo empty */ | |
284 | len = 0; | |
285 | break; | |
286 | case 0x0: | |
287 | len = 1; | |
288 | break; | |
289 | case 0x8: /* fifo 1/3 full */ | |
290 | len = 42; | |
291 | break; | |
292 | case 0xc: /* fifo 2/3 full */ | |
293 | len = 84; | |
294 | break; | |
295 | case 0xe: /* fifo full */ | |
296 | len = 128; | |
297 | break; | |
298 | } | |
299 | ||
300 | if ((i & 0x40) && len == 0) { /* fifo empty and interrupt occurred */ | |
301 | return 0; | |
302 | } | |
303 | ||
304 | if (len) { | |
305 | if (len > reqlen) | |
306 | len = reqlen; | |
307 | ||
308 | if (fast_pio && len > 3) { | |
309 | insl(base + PIO_FIFO, request, len >> 2); | |
310 | request += len & 0xfc; | |
311 | reqlen -= len & 0xfc; | |
312 | } else { | |
313 | while (len--) { | |
314 | *request++ = inb(base + PIO_FIFO); | |
315 | reqlen--; | |
316 | } | |
317 | } | |
318 | } | |
319 | } | |
320 | return 0; | |
321 | } | |
322 | ||
323 | static __inline__ int | |
324 | SYM53C500_pio_write(int fast_pio, int base, unsigned char *request, unsigned int reqlen) | |
325 | { | |
326 | int i = 0; | |
327 | int len; /* current scsi fifo size */ | |
328 | ||
329 | REG1(base); | |
330 | while (reqlen && !(i & 0x40)) { | |
331 | i = inb(base + PIO_STATUS); | |
332 | /* VDEB(printk("pio_status=%x\n", i)); */ | |
333 | if (i & 0x80) /* error */ | |
334 | return 0; | |
335 | ||
336 | switch (i & 0x1e) { | |
337 | case 0x10: | |
338 | len = 128; | |
339 | break; | |
340 | case 0x0: | |
341 | len = 84; | |
342 | break; | |
343 | case 0x8: | |
344 | len = 42; | |
345 | break; | |
346 | case 0xc: | |
347 | len = 1; | |
348 | break; | |
349 | default: | |
350 | case 0xe: | |
351 | len = 0; | |
352 | break; | |
353 | } | |
354 | ||
355 | if (len) { | |
356 | if (len > reqlen) | |
357 | len = reqlen; | |
358 | ||
359 | if (fast_pio && len > 3) { | |
360 | outsl(base + PIO_FIFO, request, len >> 2); | |
361 | request += len & 0xfc; | |
362 | reqlen -= len & 0xfc; | |
363 | } else { | |
364 | while (len--) { | |
365 | outb(*request++, base + PIO_FIFO); | |
366 | reqlen--; | |
367 | } | |
368 | } | |
369 | } | |
370 | } | |
371 | return 0; | |
372 | } | |
373 | ||
374 | static irqreturn_t | |
375 | SYM53C500_intr(int irq, void *dev_id, struct pt_regs *regs) | |
376 | { | |
377 | unsigned long flags; | |
378 | struct Scsi_Host *dev = dev_id; | |
379 | DEB(unsigned char fifo_size;) | |
380 | DEB(unsigned char seq_reg;) | |
381 | unsigned char status, int_reg; | |
382 | unsigned char pio_status; | |
383 | struct scatterlist *sglist; | |
384 | unsigned int sgcount; | |
385 | int port_base = dev->io_port; | |
386 | struct sym53c500_data *data = | |
387 | (struct sym53c500_data *)dev->hostdata; | |
388 | struct scsi_cmnd *curSC = data->current_SC; | |
389 | int fast_pio = data->fast_pio; | |
390 | ||
391 | spin_lock_irqsave(dev->host_lock, flags); | |
392 | ||
393 | VDEB(printk("SYM53C500_intr called\n")); | |
394 | ||
395 | REG1(port_base); | |
396 | pio_status = inb(port_base + PIO_STATUS); | |
397 | REG0(port_base); | |
398 | status = inb(port_base + STAT_REG); | |
399 | DEB(seq_reg = inb(port_base + SEQ_REG)); | |
400 | int_reg = inb(port_base + INT_REG); | |
401 | DEB(fifo_size = inb(port_base + FIFO_FLAGS) & 0x1f); | |
402 | ||
403 | #if SYM53C500_DEBUG | |
404 | printk("status=%02x, seq_reg=%02x, int_reg=%02x, fifo_size=%02x", | |
405 | status, seq_reg, int_reg, fifo_size); | |
406 | printk(", pio=%02x\n", pio_status); | |
407 | #endif /* SYM53C500_DEBUG */ | |
408 | ||
409 | if (int_reg & 0x80) { /* SCSI reset intr */ | |
410 | DEB(printk("SYM53C500: reset intr received\n")); | |
411 | curSC->result = DID_RESET << 16; | |
412 | goto idle_out; | |
413 | } | |
414 | ||
415 | if (pio_status & 0x80) { | |
416 | printk("SYM53C500: Warning: PIO error!\n"); | |
417 | curSC->result = DID_ERROR << 16; | |
418 | goto idle_out; | |
419 | } | |
420 | ||
421 | if (status & 0x20) { /* Parity error */ | |
422 | printk("SYM53C500: Warning: parity error!\n"); | |
423 | curSC->result = DID_PARITY << 16; | |
424 | goto idle_out; | |
425 | } | |
426 | ||
427 | if (status & 0x40) { /* Gross error */ | |
428 | printk("SYM53C500: Warning: gross error!\n"); | |
429 | curSC->result = DID_ERROR << 16; | |
430 | goto idle_out; | |
431 | } | |
432 | ||
433 | if (int_reg & 0x20) { /* Disconnect */ | |
434 | DEB(printk("SYM53C500: disconnect intr received\n")); | |
435 | if (curSC->SCp.phase != message_in) { /* Unexpected disconnect */ | |
436 | curSC->result = DID_NO_CONNECT << 16; | |
437 | } else { /* Command complete, return status and message */ | |
438 | curSC->result = (curSC->SCp.Status & 0xff) | |
439 | | ((curSC->SCp.Message & 0xff) << 8) | (DID_OK << 16); | |
440 | } | |
441 | goto idle_out; | |
442 | } | |
443 | ||
444 | switch (status & 0x07) { /* scsi phase */ | |
445 | case 0x00: /* DATA-OUT */ | |
446 | if (int_reg & 0x10) { /* Target requesting info transfer */ | |
447 | curSC->SCp.phase = data_out; | |
448 | VDEB(printk("SYM53C500: Data-Out phase\n")); | |
449 | outb(FLUSH_FIFO, port_base + CMD_REG); | |
450 | LOAD_DMA_COUNT(port_base, curSC->request_bufflen); /* Max transfer size */ | |
451 | outb(TRANSFER_INFO | DMA_OP, port_base + CMD_REG); | |
452 | if (!curSC->use_sg) /* Don't use scatter-gather */ | |
453 | SYM53C500_pio_write(fast_pio, port_base, curSC->request_buffer, curSC->request_bufflen); | |
454 | else { /* use scatter-gather */ | |
455 | sgcount = curSC->use_sg; | |
456 | sglist = curSC->request_buffer; | |
457 | while (sgcount--) { | |
458 | SYM53C500_pio_write(fast_pio, port_base, page_address(sglist->page) + sglist->offset, sglist->length); | |
459 | sglist++; | |
460 | } | |
461 | } | |
462 | REG0(port_base); | |
463 | } | |
464 | break; | |
465 | ||
466 | case 0x01: /* DATA-IN */ | |
467 | if (int_reg & 0x10) { /* Target requesting info transfer */ | |
468 | curSC->SCp.phase = data_in; | |
469 | VDEB(printk("SYM53C500: Data-In phase\n")); | |
470 | outb(FLUSH_FIFO, port_base + CMD_REG); | |
471 | LOAD_DMA_COUNT(port_base, curSC->request_bufflen); /* Max transfer size */ | |
472 | outb(TRANSFER_INFO | DMA_OP, port_base + CMD_REG); | |
473 | if (!curSC->use_sg) /* Don't use scatter-gather */ | |
474 | SYM53C500_pio_read(fast_pio, port_base, curSC->request_buffer, curSC->request_bufflen); | |
475 | else { /* Use scatter-gather */ | |
476 | sgcount = curSC->use_sg; | |
477 | sglist = curSC->request_buffer; | |
478 | while (sgcount--) { | |
479 | SYM53C500_pio_read(fast_pio, port_base, page_address(sglist->page) + sglist->offset, sglist->length); | |
480 | sglist++; | |
481 | } | |
482 | } | |
483 | REG0(port_base); | |
484 | } | |
485 | break; | |
486 | ||
487 | case 0x02: /* COMMAND */ | |
488 | curSC->SCp.phase = command_ph; | |
489 | printk("SYM53C500: Warning: Unknown interrupt occurred in command phase!\n"); | |
490 | break; | |
491 | ||
492 | case 0x03: /* STATUS */ | |
493 | curSC->SCp.phase = status_ph; | |
494 | VDEB(printk("SYM53C500: Status phase\n")); | |
495 | outb(FLUSH_FIFO, port_base + CMD_REG); | |
496 | outb(INIT_CMD_COMPLETE, port_base + CMD_REG); | |
497 | break; | |
498 | ||
499 | case 0x04: /* Reserved */ | |
500 | case 0x05: /* Reserved */ | |
501 | printk("SYM53C500: WARNING: Reserved phase!!!\n"); | |
502 | break; | |
503 | ||
504 | case 0x06: /* MESSAGE-OUT */ | |
505 | DEB(printk("SYM53C500: Message-Out phase\n")); | |
506 | curSC->SCp.phase = message_out; | |
507 | outb(SET_ATN, port_base + CMD_REG); /* Reject the message */ | |
508 | outb(MSG_ACCEPT, port_base + CMD_REG); | |
509 | break; | |
510 | ||
511 | case 0x07: /* MESSAGE-IN */ | |
512 | VDEB(printk("SYM53C500: Message-In phase\n")); | |
513 | curSC->SCp.phase = message_in; | |
514 | ||
515 | curSC->SCp.Status = inb(port_base + SCSI_FIFO); | |
516 | curSC->SCp.Message = inb(port_base + SCSI_FIFO); | |
517 | ||
518 | VDEB(printk("SCSI FIFO size=%d\n", inb(port_base + FIFO_FLAGS) & 0x1f)); | |
519 | DEB(printk("Status = %02x Message = %02x\n", curSC->SCp.Status, curSC->SCp.Message)); | |
520 | ||
521 | if (curSC->SCp.Message == SAVE_POINTERS || curSC->SCp.Message == DISCONNECT) { | |
522 | outb(SET_ATN, port_base + CMD_REG); /* Reject message */ | |
523 | DEB(printk("Discarding SAVE_POINTERS message\n")); | |
524 | } | |
525 | outb(MSG_ACCEPT, port_base + CMD_REG); | |
526 | break; | |
527 | } | |
528 | out: | |
529 | spin_unlock_irqrestore(dev->host_lock, flags); | |
530 | return IRQ_HANDLED; | |
531 | ||
532 | idle_out: | |
533 | curSC->SCp.phase = idle; | |
534 | curSC->scsi_done(curSC); | |
535 | goto out; | |
536 | } | |
537 | ||
538 | static void | |
539 | SYM53C500_release(dev_link_t *link) | |
540 | { | |
541 | struct scsi_info_t *info = link->priv; | |
542 | struct Scsi_Host *shost = info->host; | |
543 | ||
544 | DEBUG(0, "SYM53C500_release(0x%p)\n", link); | |
545 | ||
546 | /* | |
547 | * Do this before releasing/freeing resources. | |
548 | */ | |
549 | scsi_remove_host(shost); | |
550 | ||
551 | /* | |
552 | * Interrupts getting hosed on card removal. Try | |
553 | * the following code, mostly from qlogicfas.c. | |
554 | */ | |
555 | if (shost->irq) | |
556 | free_irq(shost->irq, shost); | |
557 | if (shost->dma_channel != 0xff) | |
558 | free_dma(shost->dma_channel); | |
559 | if (shost->io_port && shost->n_io_port) | |
560 | release_region(shost->io_port, shost->n_io_port); | |
561 | ||
562 | link->dev = NULL; | |
563 | ||
564 | pcmcia_release_configuration(link->handle); | |
565 | pcmcia_release_io(link->handle, &link->io); | |
566 | pcmcia_release_irq(link->handle, &link->irq); | |
567 | ||
568 | link->state &= ~DEV_CONFIG; | |
569 | ||
570 | scsi_host_put(shost); | |
571 | } /* SYM53C500_release */ | |
572 | ||
573 | static const char* | |
574 | SYM53C500_info(struct Scsi_Host *SChost) | |
575 | { | |
576 | static char info_msg[256]; | |
577 | struct sym53c500_data *data = | |
578 | (struct sym53c500_data *)SChost->hostdata; | |
579 | ||
580 | DEB(printk("SYM53C500_info called\n")); | |
581 | (void)snprintf(info_msg, sizeof(info_msg), | |
582 | "SYM53C500 at 0x%lx, IRQ %d, %s PIO mode.", | |
583 | SChost->io_port, SChost->irq, data->fast_pio ? "fast" : "slow"); | |
584 | return (info_msg); | |
585 | } | |
586 | ||
587 | static int | |
588 | SYM53C500_queue(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *)) | |
589 | { | |
590 | int i; | |
591 | int port_base = SCpnt->device->host->io_port; | |
592 | struct sym53c500_data *data = | |
593 | (struct sym53c500_data *)SCpnt->device->host->hostdata; | |
594 | ||
595 | VDEB(printk("SYM53C500_queue called\n")); | |
596 | ||
597 | DEB(printk("cmd=%02x, cmd_len=%02x, target=%02x, lun=%02x, bufflen=%d\n", | |
598 | SCpnt->cmnd[0], SCpnt->cmd_len, SCpnt->device->id, | |
599 | SCpnt->device->lun, SCpnt->request_bufflen)); | |
600 | ||
601 | VDEB(for (i = 0; i < SCpnt->cmd_len; i++) | |
602 | printk("cmd[%d]=%02x ", i, SCpnt->cmnd[i])); | |
603 | VDEB(printk("\n")); | |
604 | ||
605 | data->current_SC = SCpnt; | |
606 | data->current_SC->scsi_done = done; | |
607 | data->current_SC->SCp.phase = command_ph; | |
608 | data->current_SC->SCp.Status = 0; | |
609 | data->current_SC->SCp.Message = 0; | |
610 | ||
611 | /* We are locked here already by the mid layer */ | |
612 | REG0(port_base); | |
613 | outb(SCpnt->device->id, port_base + DEST_ID); /* set destination */ | |
614 | outb(FLUSH_FIFO, port_base + CMD_REG); /* reset the fifos */ | |
615 | ||
616 | for (i = 0; i < SCpnt->cmd_len; i++) { | |
617 | outb(SCpnt->cmnd[i], port_base + SCSI_FIFO); | |
618 | } | |
619 | outb(SELECT_NO_ATN, port_base + CMD_REG); | |
620 | ||
621 | return 0; | |
622 | } | |
623 | ||
624 | static int | |
625 | SYM53C500_host_reset(struct scsi_cmnd *SCpnt) | |
626 | { | |
627 | int port_base = SCpnt->device->host->io_port; | |
628 | ||
629 | DEB(printk("SYM53C500_host_reset called\n")); | |
630 | SYM53C500_int_host_reset(port_base); | |
631 | ||
632 | return SUCCESS; | |
633 | } | |
634 | ||
635 | static int | |
636 | SYM53C500_biosparm(struct scsi_device *disk, | |
637 | struct block_device *dev, | |
638 | sector_t capacity, int *info_array) | |
639 | { | |
640 | int size; | |
641 | ||
642 | DEB(printk("SYM53C500_biosparm called\n")); | |
643 | ||
644 | size = capacity; | |
645 | info_array[0] = 64; /* heads */ | |
646 | info_array[1] = 32; /* sectors */ | |
647 | info_array[2] = size >> 11; /* cylinders */ | |
648 | if (info_array[2] > 1024) { /* big disk */ | |
649 | info_array[0] = 255; | |
650 | info_array[1] = 63; | |
651 | info_array[2] = size / (255 * 63); | |
652 | } | |
653 | return 0; | |
654 | } | |
655 | ||
656 | static ssize_t | |
657 | SYM53C500_show_pio(struct class_device *cdev, char *buf) | |
658 | { | |
659 | struct Scsi_Host *SHp = class_to_shost(cdev); | |
660 | struct sym53c500_data *data = | |
661 | (struct sym53c500_data *)SHp->hostdata; | |
662 | ||
663 | return snprintf(buf, 4, "%d\n", data->fast_pio); | |
664 | } | |
665 | ||
666 | static ssize_t | |
667 | SYM53C500_store_pio(struct class_device *cdev, const char *buf, size_t count) | |
668 | { | |
669 | int pio; | |
670 | struct Scsi_Host *SHp = class_to_shost(cdev); | |
671 | struct sym53c500_data *data = | |
672 | (struct sym53c500_data *)SHp->hostdata; | |
673 | ||
674 | pio = simple_strtoul(buf, NULL, 0); | |
675 | if (pio == 0 || pio == 1) { | |
676 | data->fast_pio = pio; | |
677 | return count; | |
678 | } | |
679 | else | |
680 | return -EINVAL; | |
681 | } | |
682 | ||
683 | /* | |
684 | * SCSI HBA device attributes we want to | |
685 | * make available via sysfs. | |
686 | */ | |
687 | static struct class_device_attribute SYM53C500_pio_attr = { | |
688 | .attr = { | |
689 | .name = "fast_pio", | |
690 | .mode = (S_IRUGO | S_IWUSR), | |
691 | }, | |
692 | .show = SYM53C500_show_pio, | |
693 | .store = SYM53C500_store_pio, | |
694 | }; | |
695 | ||
696 | static struct class_device_attribute *SYM53C500_shost_attrs[] = { | |
697 | &SYM53C500_pio_attr, | |
698 | NULL, | |
699 | }; | |
700 | ||
701 | /* | |
702 | * scsi_host_template initializer | |
703 | */ | |
704 | static struct scsi_host_template sym53c500_driver_template = { | |
705 | .module = THIS_MODULE, | |
706 | .name = "SYM53C500", | |
707 | .info = SYM53C500_info, | |
708 | .queuecommand = SYM53C500_queue, | |
709 | .eh_host_reset_handler = SYM53C500_host_reset, | |
710 | .bios_param = SYM53C500_biosparm, | |
711 | .proc_name = "SYM53C500", | |
712 | .can_queue = 1, | |
713 | .this_id = 7, | |
714 | .sg_tablesize = 32, | |
715 | .cmd_per_lun = 1, | |
716 | .use_clustering = ENABLE_CLUSTERING, | |
717 | .shost_attrs = SYM53C500_shost_attrs | |
718 | }; | |
719 | ||
720 | #define CS_CHECK(fn, ret) \ | |
721 | do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0) | |
722 | ||
723 | static void | |
724 | SYM53C500_config(dev_link_t *link) | |
725 | { | |
726 | client_handle_t handle = link->handle; | |
727 | struct scsi_info_t *info = link->priv; | |
728 | tuple_t tuple; | |
729 | cisparse_t parse; | |
730 | int i, last_ret, last_fn; | |
731 | int irq_level, port_base; | |
732 | unsigned short tuple_data[32]; | |
733 | struct Scsi_Host *host; | |
734 | struct scsi_host_template *tpnt = &sym53c500_driver_template; | |
735 | struct sym53c500_data *data; | |
736 | ||
737 | DEBUG(0, "SYM53C500_config(0x%p)\n", link); | |
738 | ||
739 | tuple.TupleData = (cisdata_t *)tuple_data; | |
740 | tuple.TupleDataMax = 64; | |
741 | tuple.TupleOffset = 0; | |
742 | tuple.DesiredTuple = CISTPL_CONFIG; | |
743 | CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple)); | |
744 | CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple)); | |
745 | CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse)); | |
746 | link->conf.ConfigBase = parse.config.base; | |
747 | ||
748 | tuple.DesiredTuple = CISTPL_MANFID; | |
749 | if ((pcmcia_get_first_tuple(handle, &tuple) == CS_SUCCESS) && | |
750 | (pcmcia_get_tuple_data(handle, &tuple) == CS_SUCCESS)) | |
751 | info->manf_id = le16_to_cpu(tuple.TupleData[0]); | |
752 | ||
753 | /* Configure card */ | |
754 | link->state |= DEV_CONFIG; | |
755 | ||
756 | tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY; | |
757 | CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple)); | |
758 | while (1) { | |
759 | if (pcmcia_get_tuple_data(handle, &tuple) != 0 || | |
760 | pcmcia_parse_tuple(handle, &tuple, &parse) != 0) | |
761 | goto next_entry; | |
762 | link->conf.ConfigIndex = parse.cftable_entry.index; | |
763 | link->io.BasePort1 = parse.cftable_entry.io.win[0].base; | |
764 | link->io.NumPorts1 = parse.cftable_entry.io.win[0].len; | |
765 | ||
766 | if (link->io.BasePort1 != 0) { | |
767 | i = pcmcia_request_io(handle, &link->io); | |
768 | if (i == CS_SUCCESS) | |
769 | break; | |
770 | } | |
771 | next_entry: | |
772 | CS_CHECK(GetNextTuple, pcmcia_get_next_tuple(handle, &tuple)); | |
773 | } | |
774 | ||
775 | CS_CHECK(RequestIRQ, pcmcia_request_irq(handle, &link->irq)); | |
776 | CS_CHECK(RequestConfiguration, pcmcia_request_configuration(handle, &link->conf)); | |
777 | ||
778 | /* | |
779 | * That's the trouble with copying liberally from another driver. | |
780 | * Some things probably aren't relevant, and I suspect this entire | |
781 | * section dealing with manufacturer IDs can be scrapped. --rct | |
782 | */ | |
783 | if ((info->manf_id == MANFID_MACNICA) || | |
784 | (info->manf_id == MANFID_PIONEER) || | |
785 | (info->manf_id == 0x0098)) { | |
786 | /* set ATAcmd */ | |
787 | outb(0xb4, link->io.BasePort1 + 0xd); | |
788 | outb(0x24, link->io.BasePort1 + 0x9); | |
789 | outb(0x04, link->io.BasePort1 + 0xd); | |
790 | } | |
791 | ||
792 | /* | |
793 | * irq_level == 0 implies tpnt->can_queue == 0, which | |
794 | * is not supported in 2.6. Thus, only irq_level > 0 | |
795 | * will be allowed. | |
796 | * | |
797 | * Possible port_base values are as follows: | |
798 | * | |
799 | * 0x130, 0x230, 0x280, 0x290, | |
800 | * 0x320, 0x330, 0x340, 0x350 | |
801 | */ | |
802 | port_base = link->io.BasePort1; | |
803 | irq_level = link->irq.AssignedIRQ; | |
804 | ||
805 | DEB(printk("SYM53C500: port_base=0x%x, irq=%d, fast_pio=%d\n", | |
806 | port_base, irq_level, USE_FAST_PIO);) | |
807 | ||
808 | chip_init(port_base); | |
809 | ||
810 | host = scsi_host_alloc(tpnt, sizeof(struct sym53c500_data)); | |
811 | if (!host) { | |
812 | printk("SYM53C500: Unable to register host, giving up.\n"); | |
813 | goto err_release; | |
814 | } | |
815 | ||
816 | data = (struct sym53c500_data *)host->hostdata; | |
817 | ||
818 | if (irq_level > 0) { | |
819 | if (request_irq(irq_level, SYM53C500_intr, SA_SHIRQ, "SYM53C500", host)) { | |
820 | printk("SYM53C500: unable to allocate IRQ %d\n", irq_level); | |
821 | goto err_free_scsi; | |
822 | } | |
823 | DEB(printk("SYM53C500: allocated IRQ %d\n", irq_level)); | |
824 | } else if (irq_level == 0) { | |
825 | DEB(printk("SYM53C500: No interrupts detected\n")); | |
826 | goto err_free_scsi; | |
827 | } else { | |
828 | DEB(printk("SYM53C500: Shouldn't get here!\n")); | |
829 | goto err_free_scsi; | |
830 | } | |
831 | ||
832 | host->unique_id = port_base; | |
833 | host->irq = irq_level; | |
834 | host->io_port = port_base; | |
835 | host->n_io_port = 0x10; | |
836 | host->dma_channel = -1; | |
837 | ||
838 | /* | |
839 | * Note fast_pio is set to USE_FAST_PIO by | |
840 | * default, but can be changed via "sysfs". | |
841 | */ | |
842 | data->fast_pio = USE_FAST_PIO; | |
843 | ||
844 | sprintf(info->node.dev_name, "scsi%d", host->host_no); | |
845 | link->dev = &info->node; | |
846 | info->host = host; | |
847 | ||
848 | if (scsi_add_host(host, NULL)) | |
849 | goto err_free_irq; | |
850 | ||
851 | scsi_scan_host(host); | |
852 | ||
853 | goto out; /* SUCCESS */ | |
854 | ||
855 | err_free_irq: | |
856 | free_irq(irq_level, host); | |
857 | err_free_scsi: | |
858 | scsi_host_put(host); | |
859 | err_release: | |
860 | release_region(port_base, 0x10); | |
861 | printk(KERN_INFO "sym53c500_cs: no SCSI devices found\n"); | |
862 | ||
863 | out: | |
864 | link->state &= ~DEV_CONFIG_PENDING; | |
865 | return; | |
866 | ||
867 | cs_failed: | |
868 | cs_error(link->handle, last_fn, last_ret); | |
869 | SYM53C500_release(link); | |
870 | return; | |
871 | } /* SYM53C500_config */ | |
872 | ||
873 | static int | |
874 | SYM53C500_event(event_t event, int priority, event_callback_args_t *args) | |
875 | { | |
876 | dev_link_t *link = args->client_data; | |
877 | struct scsi_info_t *info = link->priv; | |
878 | ||
879 | DEBUG(1, "SYM53C500_event(0x%06x)\n", event); | |
880 | ||
881 | switch (event) { | |
882 | case CS_EVENT_CARD_REMOVAL: | |
883 | link->state &= ~DEV_PRESENT; | |
884 | if (link->state & DEV_CONFIG) | |
885 | SYM53C500_release(link); | |
886 | break; | |
887 | case CS_EVENT_CARD_INSERTION: | |
888 | link->state |= DEV_PRESENT | DEV_CONFIG_PENDING; | |
889 | SYM53C500_config(link); | |
890 | break; | |
891 | case CS_EVENT_PM_SUSPEND: | |
892 | link->state |= DEV_SUSPEND; | |
893 | /* Fall through... */ | |
894 | case CS_EVENT_RESET_PHYSICAL: | |
895 | if (link->state & DEV_CONFIG) | |
896 | pcmcia_release_configuration(link->handle); | |
897 | break; | |
898 | case CS_EVENT_PM_RESUME: | |
899 | link->state &= ~DEV_SUSPEND; | |
900 | /* Fall through... */ | |
901 | case CS_EVENT_CARD_RESET: | |
902 | if (link->state & DEV_CONFIG) { | |
903 | pcmcia_request_configuration(link->handle, &link->conf); | |
904 | /* See earlier comment about manufacturer IDs. */ | |
905 | if ((info->manf_id == MANFID_MACNICA) || | |
906 | (info->manf_id == MANFID_PIONEER) || | |
907 | (info->manf_id == 0x0098)) { | |
908 | outb(0x80, link->io.BasePort1 + 0xd); | |
909 | outb(0x24, link->io.BasePort1 + 0x9); | |
910 | outb(0x04, link->io.BasePort1 + 0xd); | |
911 | } | |
912 | /* | |
913 | * If things don't work after a "resume", | |
914 | * this is a good place to start looking. | |
915 | */ | |
916 | SYM53C500_int_host_reset(link->io.BasePort1); | |
917 | } | |
918 | break; | |
919 | } | |
920 | return 0; | |
921 | } /* SYM53C500_event */ | |
922 | ||
923 | static void | |
924 | SYM53C500_detach(dev_link_t *link) | |
925 | { | |
926 | dev_link_t **linkp; | |
927 | ||
928 | DEBUG(0, "SYM53C500_detach(0x%p)\n", link); | |
929 | ||
930 | /* Locate device structure */ | |
931 | for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next) | |
932 | if (*linkp == link) | |
933 | break; | |
934 | if (*linkp == NULL) | |
935 | return; | |
936 | ||
937 | if (link->state & DEV_CONFIG) | |
938 | SYM53C500_release(link); | |
939 | ||
940 | if (link->handle) | |
941 | pcmcia_deregister_client(link->handle); | |
942 | ||
943 | /* Unlink device structure, free bits. */ | |
944 | *linkp = link->next; | |
945 | kfree(link->priv); | |
946 | link->priv = NULL; | |
947 | } /* SYM53C500_detach */ | |
948 | ||
949 | static dev_link_t * | |
950 | SYM53C500_attach(void) | |
951 | { | |
952 | struct scsi_info_t *info; | |
953 | client_reg_t client_reg; | |
954 | dev_link_t *link; | |
955 | int ret; | |
956 | ||
957 | DEBUG(0, "SYM53C500_attach()\n"); | |
958 | ||
959 | /* Create new SCSI device */ | |
960 | info = kmalloc(sizeof(*info), GFP_KERNEL); | |
961 | if (!info) | |
962 | return NULL; | |
963 | memset(info, 0, sizeof(*info)); | |
964 | link = &info->link; | |
965 | link->priv = info; | |
966 | link->io.NumPorts1 = 16; | |
967 | link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO; | |
968 | link->io.IOAddrLines = 10; | |
969 | link->irq.Attributes = IRQ_TYPE_EXCLUSIVE; | |
970 | link->irq.IRQInfo1 = IRQ_LEVEL_ID; | |
971 | link->conf.Attributes = CONF_ENABLE_IRQ; | |
972 | link->conf.Vcc = 50; | |
973 | link->conf.IntType = INT_MEMORY_AND_IO; | |
974 | link->conf.Present = PRESENT_OPTION; | |
975 | ||
976 | /* Register with Card Services */ | |
977 | link->next = dev_list; | |
978 | dev_list = link; | |
979 | client_reg.dev_info = &dev_info; | |
980 | client_reg.event_handler = &SYM53C500_event; | |
981 | client_reg.EventMask = CS_EVENT_RESET_REQUEST | CS_EVENT_CARD_RESET | | |
982 | CS_EVENT_CARD_INSERTION | CS_EVENT_CARD_REMOVAL | | |
983 | CS_EVENT_PM_SUSPEND | CS_EVENT_PM_RESUME; | |
984 | client_reg.Version = 0x0210; | |
985 | client_reg.event_callback_args.client_data = link; | |
986 | ret = pcmcia_register_client(&link->handle, &client_reg); | |
987 | if (ret != 0) { | |
988 | cs_error(link->handle, RegisterClient, ret); | |
989 | SYM53C500_detach(link); | |
990 | return NULL; | |
991 | } | |
992 | ||
993 | return link; | |
994 | } /* SYM53C500_attach */ | |
995 | ||
996 | MODULE_AUTHOR("Bob Tracy <rct@frus.com>"); | |
997 | MODULE_DESCRIPTION("SYM53C500 PCMCIA SCSI driver"); | |
998 | MODULE_LICENSE("GPL"); | |
999 | ||
1000 | static struct pcmcia_driver sym53c500_cs_driver = { | |
1001 | .owner = THIS_MODULE, | |
1002 | .drv = { | |
1003 | .name = "sym53c500_cs", | |
1004 | }, | |
1005 | .attach = SYM53C500_attach, | |
1006 | .detach = SYM53C500_detach, | |
1007 | }; | |
1008 | ||
1009 | static int __init | |
1010 | init_sym53c500_cs(void) | |
1011 | { | |
1012 | return pcmcia_register_driver(&sym53c500_cs_driver); | |
1013 | } | |
1014 | ||
1015 | static void __exit | |
1016 | exit_sym53c500_cs(void) | |
1017 | { | |
1018 | pcmcia_unregister_driver(&sym53c500_cs_driver); | |
1019 | } | |
1020 | ||
1021 | module_init(init_sym53c500_cs); | |
1022 | module_exit(exit_sym53c500_cs); |