1 | // SPDX-License-Identifier: GPL-2.0-or-later |
2 | /* |
3 | * sym53c500_cs.c Bob Tracy (rct@frus.com) |
4 | * |
5 | * A rewrite of the pcmcia-cs add-on driver for newer (circa 1997) |
6 | * New Media Bus Toaster PCMCIA SCSI cards using the Symbios Logic |
7 | * 53c500 controller: intended for use with 2.6 and later kernels. |
8 | * The pcmcia-cs add-on version of this driver is not supported |
9 | * beyond 2.4. It consisted of three files with history/copyright |
10 | * information as follows: |
11 | * |
12 | * SYM53C500.h |
13 | * Bob Tracy (rct@frus.com) |
14 | * Original by Tom Corner (tcorner@via.at). |
15 | * Adapted from NCR53c406a.h which is Copyrighted (C) 1994 |
16 | * Normunds Saumanis (normunds@rx.tech.swh.lv) |
17 | * |
18 | * SYM53C500.c |
19 | * Bob Tracy (rct@frus.com) |
20 | * Original driver by Tom Corner (tcorner@via.at) was adapted |
21 | * from NCR53c406a.c which is Copyrighted (C) 1994, 1995, 1996 |
22 | * Normunds Saumanis (normunds@fi.ibm.com) |
23 | * |
24 | * sym53c500.c |
25 | * Bob Tracy (rct@frus.com) |
26 | * Original by Tom Corner (tcorner@via.at) was adapted from a |
27 | * driver for the Qlogic SCSI card written by |
28 | * David Hinds (dhinds@allegro.stanford.edu). |
29 | */ |
30 | |
31 | #define SYM53C500_DEBUG 0 |
32 | #define VERBOSE_SYM53C500_DEBUG 0 |
33 | |
34 | /* |
35 | * Set this to 0 if you encounter kernel lockups while transferring |
36 | * data in PIO mode. Note this can be changed via "sysfs". |
37 | */ |
38 | #define USE_FAST_PIO 1 |
39 | |
40 | /* =============== End of user configurable parameters ============== */ |
41 | |
42 | #include <linux/module.h> |
43 | #include <linux/moduleparam.h> |
44 | #include <linux/errno.h> |
45 | #include <linux/init.h> |
46 | #include <linux/interrupt.h> |
47 | #include <linux/kernel.h> |
48 | #include <linux/slab.h> |
49 | #include <linux/string.h> |
50 | #include <linux/ioport.h> |
51 | #include <linux/blkdev.h> |
52 | #include <linux/spinlock.h> |
53 | #include <linux/bitops.h> |
54 | |
55 | #include <asm/io.h> |
56 | #include <asm/dma.h> |
57 | #include <asm/irq.h> |
58 | |
59 | #include <scsi/scsi_ioctl.h> |
60 | #include <scsi/scsi_cmnd.h> |
61 | #include <scsi/scsi_device.h> |
62 | #include <scsi/scsi.h> |
63 | #include <scsi/scsi_host.h> |
64 | |
65 | #include <pcmcia/cistpl.h> |
66 | #include <pcmcia/ds.h> |
67 | #include <pcmcia/ciscode.h> |
68 | |
69 | |
70 | /* ================================================================== */ |
71 | |
72 | #define SYNC_MODE 0 /* Synchronous transfer mode */ |
73 | |
74 | /* Default configuration */ |
75 | #define C1_IMG 0x07 /* ID=7 */ |
76 | #define C2_IMG 0x48 /* FE SCSI2 */ |
77 | #define C3_IMG 0x20 /* CDB */ |
78 | #define C4_IMG 0x04 /* ANE */ |
79 | #define C5_IMG 0xa4 /* ? changed from b6= AA PI SIE POL */ |
80 | #define C7_IMG 0x80 /* added for SYM53C500 t. corner */ |
81 | |
82 | /* Hardware Registers: offsets from io_port (base) */ |
83 | |
84 | /* Control Register Set 0 */ |
85 | #define TC_LSB 0x00 /* transfer counter lsb */ |
86 | #define TC_MSB 0x01 /* transfer counter msb */ |
87 | #define SCSI_FIFO 0x02 /* scsi fifo register */ |
88 | #define CMD_REG 0x03 /* command register */ |
89 | #define STAT_REG 0x04 /* status register */ |
90 | #define DEST_ID 0x04 /* selection/reselection bus id */ |
91 | #define INT_REG 0x05 /* interrupt status register */ |
92 | #define SRTIMOUT 0x05 /* select/reselect timeout reg */ |
93 | #define SEQ_REG 0x06 /* sequence step register */ |
94 | #define SYNCPRD 0x06 /* synchronous transfer period */ |
95 | #define FIFO_FLAGS 0x07 /* indicates # of bytes in fifo */ |
96 | #define SYNCOFF 0x07 /* synchronous offset register */ |
97 | #define CONFIG1 0x08 /* configuration register */ |
98 | #define CLKCONV 0x09 /* clock conversion register */ |
99 | /* #define TESTREG 0x0A */ /* test mode register */ |
100 | #define CONFIG2 0x0B /* configuration 2 register */ |
101 | #define CONFIG3 0x0C /* configuration 3 register */ |
102 | #define CONFIG4 0x0D /* configuration 4 register */ |
103 | #define TC_HIGH 0x0E /* transfer counter high */ |
104 | /* #define FIFO_BOTTOM 0x0F */ /* reserve FIFO byte register */ |
105 | |
106 | /* Control Register Set 1 */ |
107 | /* #define JUMPER_SENSE 0x00 */ /* jumper sense port reg (r/w) */ |
108 | /* #define SRAM_PTR 0x01 */ /* SRAM address pointer reg (r/w) */ |
109 | /* #define SRAM_DATA 0x02 */ /* SRAM data register (r/w) */ |
110 | #define PIO_FIFO 0x04 /* PIO FIFO registers (r/w) */ |
111 | /* #define PIO_FIFO1 0x05 */ /* */ |
112 | /* #define PIO_FIFO2 0x06 */ /* */ |
113 | /* #define PIO_FIFO3 0x07 */ /* */ |
114 | #define PIO_STATUS 0x08 /* PIO status (r/w) */ |
115 | /* #define ATA_CMD 0x09 */ /* ATA command/status reg (r/w) */ |
116 | /* #define ATA_ERR 0x0A */ /* ATA features/error reg (r/w) */ |
117 | #define PIO_FLAG 0x0B /* PIO flag interrupt enable (r/w) */ |
118 | #define CONFIG5 0x09 /* configuration 5 register */ |
119 | /* #define SIGNATURE 0x0E */ /* signature register (r) */ |
120 | /* #define CONFIG6 0x0F */ /* configuration 6 register (r) */ |
121 | #define CONFIG7 0x0d |
122 | |
123 | /* select register set 0 */ |
124 | #define REG0(x) (outb(C4_IMG, (x) + CONFIG4)) |
125 | /* select register set 1 */ |
126 | #define REG1(x) outb(C7_IMG, (x) + CONFIG7); outb(C5_IMG, (x) + CONFIG5) |
127 | |
128 | #if SYM53C500_DEBUG |
129 | #define DEB(x) x |
130 | #else |
131 | #define DEB(x) |
132 | #endif |
133 | |
134 | #if VERBOSE_SYM53C500_DEBUG |
135 | #define VDEB(x) x |
136 | #else |
137 | #define VDEB(x) |
138 | #endif |
139 | |
140 | #define LOAD_DMA_COUNT(x, count) \ |
141 | outb(count & 0xff, (x) + TC_LSB); \ |
142 | outb((count >> 8) & 0xff, (x) + TC_MSB); \ |
143 | outb((count >> 16) & 0xff, (x) + TC_HIGH); |
144 | |
145 | /* Chip commands */ |
146 | #define DMA_OP 0x80 |
147 | |
148 | #define SCSI_NOP 0x00 |
149 | #define FLUSH_FIFO 0x01 |
150 | #define CHIP_RESET 0x02 |
151 | #define SCSI_RESET 0x03 |
152 | #define RESELECT 0x40 |
153 | #define SELECT_NO_ATN 0x41 |
154 | #define SELECT_ATN 0x42 |
155 | #define SELECT_ATN_STOP 0x43 |
156 | #define ENABLE_SEL 0x44 |
157 | #define DISABLE_SEL 0x45 |
158 | #define SELECT_ATN3 0x46 |
159 | #define RESELECT3 0x47 |
160 | #define TRANSFER_INFO 0x10 |
161 | #define INIT_CMD_COMPLETE 0x11 |
162 | #define MSG_ACCEPT 0x12 |
163 | #define TRANSFER_PAD 0x18 |
164 | #define SET_ATN 0x1a |
165 | #define RESET_ATN 0x1b |
166 | #define SEND_MSG 0x20 |
167 | #define SEND_STATUS 0x21 |
168 | #define SEND_DATA 0x22 |
169 | #define DISCONN_SEQ 0x23 |
170 | #define TERMINATE_SEQ 0x24 |
171 | #define TARG_CMD_COMPLETE 0x25 |
172 | #define DISCONN 0x27 |
173 | #define RECV_MSG 0x28 |
174 | #define RECV_CMD 0x29 |
175 | #define RECV_DATA 0x2a |
176 | #define RECV_CMD_SEQ 0x2b |
177 | #define TARGET_ABORT_DMA 0x04 |
178 | |
179 | /* ================================================================== */ |
180 | |
181 | struct scsi_info_t { |
182 | struct pcmcia_device *p_dev; |
183 | struct Scsi_Host *host; |
184 | unsigned short manf_id; |
185 | }; |
186 | |
187 | /* |
188 | * Repository for per-instance host data. |
189 | */ |
190 | struct sym53c500_data { |
191 | struct scsi_cmnd *current_SC; |
192 | int fast_pio; |
193 | }; |
194 | |
195 | struct sym53c500_cmd_priv { |
196 | int status; |
197 | int message; |
198 | int phase; |
199 | }; |
200 | |
201 | enum Phase { |
202 | idle, |
203 | data_out, |
204 | data_in, |
205 | command_ph, |
206 | status_ph, |
207 | message_out, |
208 | message_in |
209 | }; |
210 | |
211 | /* ================================================================== */ |
212 | |
213 | static void |
214 | chip_init(int io_port) |
215 | { |
216 | REG1(io_port); |
217 | outb(value: 0x01, port: io_port + PIO_STATUS); |
218 | outb(value: 0x00, port: io_port + PIO_FLAG); |
219 | |
220 | outb(C4_IMG, port: io_port + CONFIG4); /* REG0(io_port); */ |
221 | outb(C3_IMG, port: io_port + CONFIG3); |
222 | outb(C2_IMG, port: io_port + CONFIG2); |
223 | outb(C1_IMG, port: io_port + CONFIG1); |
224 | |
225 | outb(value: 0x05, port: io_port + CLKCONV); /* clock conversion factor */ |
226 | outb(value: 0x9C, port: io_port + SRTIMOUT); /* Selection timeout */ |
227 | outb(value: 0x05, port: io_port + SYNCPRD); /* Synchronous transfer period */ |
228 | outb(SYNC_MODE, port: io_port + SYNCOFF); /* synchronous mode */ |
229 | } |
230 | |
231 | static void |
232 | SYM53C500_int_host_reset(int io_port) |
233 | { |
234 | outb(C4_IMG, port: io_port + CONFIG4); /* REG0(io_port); */ |
235 | outb(CHIP_RESET, port: io_port + CMD_REG); |
236 | outb(SCSI_NOP, port: io_port + CMD_REG); /* required after reset */ |
237 | outb(SCSI_RESET, port: io_port + CMD_REG); |
238 | chip_init(io_port); |
239 | } |
240 | |
241 | static __inline__ int |
242 | SYM53C500_pio_read(int fast_pio, int base, unsigned char *request, unsigned int reqlen) |
243 | { |
244 | int i; |
245 | int len; /* current scsi fifo size */ |
246 | |
247 | REG1(base); |
248 | while (reqlen) { |
249 | i = inb(port: base + PIO_STATUS); |
250 | /* VDEB(printk("pio_status=%x\n", i)); */ |
251 | if (i & 0x80) |
252 | return 0; |
253 | |
254 | switch (i & 0x1e) { |
255 | default: |
256 | case 0x10: /* fifo empty */ |
257 | len = 0; |
258 | break; |
259 | case 0x0: |
260 | len = 1; |
261 | break; |
262 | case 0x8: /* fifo 1/3 full */ |
263 | len = 42; |
264 | break; |
265 | case 0xc: /* fifo 2/3 full */ |
266 | len = 84; |
267 | break; |
268 | case 0xe: /* fifo full */ |
269 | len = 128; |
270 | break; |
271 | } |
272 | |
273 | if ((i & 0x40) && len == 0) { /* fifo empty and interrupt occurred */ |
274 | return 0; |
275 | } |
276 | |
277 | if (len) { |
278 | if (len > reqlen) |
279 | len = reqlen; |
280 | |
281 | if (fast_pio && len > 3) { |
282 | insl(port: base + PIO_FIFO, addr: request, count: len >> 2); |
283 | request += len & 0xfc; |
284 | reqlen -= len & 0xfc; |
285 | } else { |
286 | while (len--) { |
287 | *request++ = inb(port: base + PIO_FIFO); |
288 | reqlen--; |
289 | } |
290 | } |
291 | } |
292 | } |
293 | return 0; |
294 | } |
295 | |
296 | static __inline__ int |
297 | SYM53C500_pio_write(int fast_pio, int base, unsigned char *request, unsigned int reqlen) |
298 | { |
299 | int i = 0; |
300 | int len; /* current scsi fifo size */ |
301 | |
302 | REG1(base); |
303 | while (reqlen && !(i & 0x40)) { |
304 | i = inb(port: base + PIO_STATUS); |
305 | /* VDEB(printk("pio_status=%x\n", i)); */ |
306 | if (i & 0x80) /* error */ |
307 | return 0; |
308 | |
309 | switch (i & 0x1e) { |
310 | case 0x10: |
311 | len = 128; |
312 | break; |
313 | case 0x0: |
314 | len = 84; |
315 | break; |
316 | case 0x8: |
317 | len = 42; |
318 | break; |
319 | case 0xc: |
320 | len = 1; |
321 | break; |
322 | default: |
323 | case 0xe: |
324 | len = 0; |
325 | break; |
326 | } |
327 | |
328 | if (len) { |
329 | if (len > reqlen) |
330 | len = reqlen; |
331 | |
332 | if (fast_pio && len > 3) { |
333 | outsl(port: base + PIO_FIFO, addr: request, count: len >> 2); |
334 | request += len & 0xfc; |
335 | reqlen -= len & 0xfc; |
336 | } else { |
337 | while (len--) { |
338 | outb(value: *request++, port: base + PIO_FIFO); |
339 | reqlen--; |
340 | } |
341 | } |
342 | } |
343 | } |
344 | return 0; |
345 | } |
346 | |
347 | static irqreturn_t |
348 | SYM53C500_intr(int irq, void *dev_id) |
349 | { |
350 | unsigned long flags; |
351 | struct Scsi_Host *dev = dev_id; |
352 | DEB(unsigned char fifo_size;) |
353 | DEB(unsigned char seq_reg;) |
354 | unsigned char status, int_reg; |
355 | unsigned char pio_status; |
356 | int port_base = dev->io_port; |
357 | struct sym53c500_data *data = |
358 | (struct sym53c500_data *)dev->hostdata; |
359 | struct scsi_cmnd *curSC = data->current_SC; |
360 | struct sym53c500_cmd_priv *scp = scsi_cmd_priv(cmd: curSC); |
361 | int fast_pio = data->fast_pio; |
362 | |
363 | spin_lock_irqsave(dev->host_lock, flags); |
364 | |
365 | VDEB(printk("SYM53C500_intr called\n" )); |
366 | |
367 | REG1(port_base); |
368 | pio_status = inb(port: port_base + PIO_STATUS); |
369 | REG0(port_base); |
370 | status = inb(port: port_base + STAT_REG); |
371 | DEB(seq_reg = inb(port_base + SEQ_REG)); |
372 | int_reg = inb(port: port_base + INT_REG); |
373 | DEB(fifo_size = inb(port_base + FIFO_FLAGS) & 0x1f); |
374 | |
375 | #if SYM53C500_DEBUG |
376 | printk("status=%02x, seq_reg=%02x, int_reg=%02x, fifo_size=%02x" , |
377 | status, seq_reg, int_reg, fifo_size); |
378 | printk(", pio=%02x\n" , pio_status); |
379 | #endif /* SYM53C500_DEBUG */ |
380 | |
381 | if (int_reg & 0x80) { /* SCSI reset intr */ |
382 | DEB(printk("SYM53C500: reset intr received\n" )); |
383 | curSC->result = DID_RESET << 16; |
384 | goto idle_out; |
385 | } |
386 | |
387 | if (pio_status & 0x80) { |
388 | printk("SYM53C500: Warning: PIO error!\n" ); |
389 | curSC->result = DID_ERROR << 16; |
390 | goto idle_out; |
391 | } |
392 | |
393 | if (status & 0x20) { /* Parity error */ |
394 | printk("SYM53C500: Warning: parity error!\n" ); |
395 | curSC->result = DID_PARITY << 16; |
396 | goto idle_out; |
397 | } |
398 | |
399 | if (status & 0x40) { /* Gross error */ |
400 | printk("SYM53C500: Warning: gross error!\n" ); |
401 | curSC->result = DID_ERROR << 16; |
402 | goto idle_out; |
403 | } |
404 | |
405 | if (int_reg & 0x20) { /* Disconnect */ |
406 | DEB(printk("SYM53C500: disconnect intr received\n" )); |
407 | if (scp->phase != message_in) { /* Unexpected disconnect */ |
408 | curSC->result = DID_NO_CONNECT << 16; |
409 | } else { /* Command complete, return status and message */ |
410 | curSC->result = (scp->status & 0xff) | |
411 | ((scp->message & 0xff) << 8) | (DID_OK << 16); |
412 | } |
413 | goto idle_out; |
414 | } |
415 | |
416 | switch (status & 0x07) { /* scsi phase */ |
417 | case 0x00: /* DATA-OUT */ |
418 | if (int_reg & 0x10) { /* Target requesting info transfer */ |
419 | struct scatterlist *sg; |
420 | int i; |
421 | |
422 | scp->phase = data_out; |
423 | VDEB(printk("SYM53C500: Data-Out phase\n" )); |
424 | outb(FLUSH_FIFO, port: port_base + CMD_REG); |
425 | LOAD_DMA_COUNT(port_base, scsi_bufflen(curSC)); /* Max transfer size */ |
426 | outb(TRANSFER_INFO | DMA_OP, port: port_base + CMD_REG); |
427 | |
428 | scsi_for_each_sg(curSC, sg, scsi_sg_count(curSC), i) { |
429 | SYM53C500_pio_write(fast_pio, base: port_base, |
430 | request: sg_virt(sg), reqlen: sg->length); |
431 | } |
432 | REG0(port_base); |
433 | } |
434 | break; |
435 | |
436 | case 0x01: /* DATA-IN */ |
437 | if (int_reg & 0x10) { /* Target requesting info transfer */ |
438 | struct scatterlist *sg; |
439 | int i; |
440 | |
441 | scp->phase = data_in; |
442 | VDEB(printk("SYM53C500: Data-In phase\n" )); |
443 | outb(FLUSH_FIFO, port: port_base + CMD_REG); |
444 | LOAD_DMA_COUNT(port_base, scsi_bufflen(curSC)); /* Max transfer size */ |
445 | outb(TRANSFER_INFO | DMA_OP, port: port_base + CMD_REG); |
446 | |
447 | scsi_for_each_sg(curSC, sg, scsi_sg_count(curSC), i) { |
448 | SYM53C500_pio_read(fast_pio, base: port_base, |
449 | request: sg_virt(sg), reqlen: sg->length); |
450 | } |
451 | REG0(port_base); |
452 | } |
453 | break; |
454 | |
455 | case 0x02: /* COMMAND */ |
456 | scp->phase = command_ph; |
457 | printk("SYM53C500: Warning: Unknown interrupt occurred in command phase!\n" ); |
458 | break; |
459 | |
460 | case 0x03: /* STATUS */ |
461 | scp->phase = status_ph; |
462 | VDEB(printk("SYM53C500: Status phase\n" )); |
463 | outb(FLUSH_FIFO, port: port_base + CMD_REG); |
464 | outb(INIT_CMD_COMPLETE, port: port_base + CMD_REG); |
465 | break; |
466 | |
467 | case 0x04: /* Reserved */ |
468 | case 0x05: /* Reserved */ |
469 | printk("SYM53C500: WARNING: Reserved phase!!!\n" ); |
470 | break; |
471 | |
472 | case 0x06: /* MESSAGE-OUT */ |
473 | DEB(printk("SYM53C500: Message-Out phase\n" )); |
474 | scp->phase = message_out; |
475 | outb(SET_ATN, port: port_base + CMD_REG); /* Reject the message */ |
476 | outb(MSG_ACCEPT, port: port_base + CMD_REG); |
477 | break; |
478 | |
479 | case 0x07: /* MESSAGE-IN */ |
480 | VDEB(printk("SYM53C500: Message-In phase\n" )); |
481 | scp->phase = message_in; |
482 | |
483 | scp->status = inb(port: port_base + SCSI_FIFO); |
484 | scp->message = inb(port: port_base + SCSI_FIFO); |
485 | |
486 | VDEB(printk("SCSI FIFO size=%d\n" , inb(port_base + FIFO_FLAGS) & 0x1f)); |
487 | DEB(printk("Status = %02x Message = %02x\n" , scp->status, scp->message)); |
488 | |
489 | if (scp->message == SAVE_POINTERS || scp->message == DISCONNECT) { |
490 | outb(SET_ATN, port: port_base + CMD_REG); /* Reject message */ |
491 | DEB(printk("Discarding SAVE_POINTERS message\n" )); |
492 | } |
493 | outb(MSG_ACCEPT, port: port_base + CMD_REG); |
494 | break; |
495 | } |
496 | out: |
497 | spin_unlock_irqrestore(lock: dev->host_lock, flags); |
498 | return IRQ_HANDLED; |
499 | |
500 | idle_out: |
501 | scp->phase = idle; |
502 | scsi_done(cmd: curSC); |
503 | goto out; |
504 | } |
505 | |
506 | static void |
507 | SYM53C500_release(struct pcmcia_device *link) |
508 | { |
509 | struct scsi_info_t *info = link->priv; |
510 | struct Scsi_Host *shost = info->host; |
511 | |
512 | dev_dbg(&link->dev, "SYM53C500_release\n" ); |
513 | |
514 | /* |
515 | * Do this before releasing/freeing resources. |
516 | */ |
517 | scsi_remove_host(shost); |
518 | |
519 | /* |
520 | * Interrupts getting hosed on card removal. Try |
521 | * the following code, mostly from qlogicfas.c. |
522 | */ |
523 | if (shost->irq) |
524 | free_irq(shost->irq, shost); |
525 | if (shost->io_port && shost->n_io_port) |
526 | release_region(shost->io_port, shost->n_io_port); |
527 | |
528 | pcmcia_disable_device(p_dev: link); |
529 | |
530 | scsi_host_put(t: shost); |
531 | } /* SYM53C500_release */ |
532 | |
533 | static const char* |
534 | SYM53C500_info(struct Scsi_Host *SChost) |
535 | { |
536 | static char info_msg[256]; |
537 | struct sym53c500_data *data = |
538 | (struct sym53c500_data *)SChost->hostdata; |
539 | |
540 | DEB(printk("SYM53C500_info called\n" )); |
541 | (void)snprintf(buf: info_msg, size: sizeof(info_msg), |
542 | fmt: "SYM53C500 at 0x%lx, IRQ %d, %s PIO mode." , |
543 | SChost->io_port, SChost->irq, data->fast_pio ? "fast" : "slow" ); |
544 | return (info_msg); |
545 | } |
546 | |
547 | static int SYM53C500_queue_lck(struct scsi_cmnd *SCpnt) |
548 | { |
549 | struct sym53c500_cmd_priv *scp = scsi_cmd_priv(cmd: SCpnt); |
550 | int i; |
551 | int port_base = SCpnt->device->host->io_port; |
552 | struct sym53c500_data *data = |
553 | (struct sym53c500_data *)SCpnt->device->host->hostdata; |
554 | |
555 | VDEB(printk("SYM53C500_queue called\n" )); |
556 | |
557 | DEB(printk("cmd=%02x, cmd_len=%02x, target=%02x, lun=%02x, bufflen=%d\n" , |
558 | SCpnt->cmnd[0], SCpnt->cmd_len, SCpnt->device->id, |
559 | (u8)SCpnt->device->lun, scsi_bufflen(SCpnt))); |
560 | |
561 | VDEB(for (i = 0; i < SCpnt->cmd_len; i++) |
562 | printk("cmd[%d]=%02x " , i, SCpnt->cmnd[i])); |
563 | VDEB(printk("\n" )); |
564 | |
565 | data->current_SC = SCpnt; |
566 | scp->phase = command_ph; |
567 | scp->status = 0; |
568 | scp->message = 0; |
569 | |
570 | /* We are locked here already by the mid layer */ |
571 | REG0(port_base); |
572 | outb(scmd_id(SCpnt), port: port_base + DEST_ID); /* set destination */ |
573 | outb(FLUSH_FIFO, port: port_base + CMD_REG); /* reset the fifos */ |
574 | |
575 | for (i = 0; i < SCpnt->cmd_len; i++) { |
576 | outb(value: SCpnt->cmnd[i], port: port_base + SCSI_FIFO); |
577 | } |
578 | outb(SELECT_NO_ATN, port: port_base + CMD_REG); |
579 | |
580 | return 0; |
581 | } |
582 | |
583 | static DEF_SCSI_QCMD(SYM53C500_queue) |
584 | |
585 | static int |
586 | SYM53C500_host_reset(struct scsi_cmnd *SCpnt) |
587 | { |
588 | int port_base = SCpnt->device->host->io_port; |
589 | |
590 | DEB(printk("SYM53C500_host_reset called\n" )); |
591 | spin_lock_irq(lock: SCpnt->device->host->host_lock); |
592 | SYM53C500_int_host_reset(io_port: port_base); |
593 | spin_unlock_irq(lock: SCpnt->device->host->host_lock); |
594 | |
595 | return SUCCESS; |
596 | } |
597 | |
598 | static int |
599 | SYM53C500_biosparm(struct scsi_device *disk, |
600 | struct block_device *dev, |
601 | sector_t capacity, int *info_array) |
602 | { |
603 | int size; |
604 | |
605 | DEB(printk("SYM53C500_biosparm called\n" )); |
606 | |
607 | size = capacity; |
608 | info_array[0] = 64; /* heads */ |
609 | info_array[1] = 32; /* sectors */ |
610 | info_array[2] = size >> 11; /* cylinders */ |
611 | if (info_array[2] > 1024) { /* big disk */ |
612 | info_array[0] = 255; |
613 | info_array[1] = 63; |
614 | info_array[2] = size / (255 * 63); |
615 | } |
616 | return 0; |
617 | } |
618 | |
619 | static ssize_t |
620 | SYM53C500_show_pio(struct device *dev, struct device_attribute *attr, |
621 | char *buf) |
622 | { |
623 | struct Scsi_Host *SHp = class_to_shost(dev); |
624 | struct sym53c500_data *data = |
625 | (struct sym53c500_data *)SHp->hostdata; |
626 | |
627 | return snprintf(buf, size: 4, fmt: "%d\n" , data->fast_pio); |
628 | } |
629 | |
630 | static ssize_t |
631 | SYM53C500_store_pio(struct device *dev, struct device_attribute *attr, |
632 | const char *buf, size_t count) |
633 | { |
634 | int pio; |
635 | struct Scsi_Host *SHp = class_to_shost(dev); |
636 | struct sym53c500_data *data = |
637 | (struct sym53c500_data *)SHp->hostdata; |
638 | |
639 | pio = simple_strtoul(buf, NULL, 0); |
640 | if (pio == 0 || pio == 1) { |
641 | data->fast_pio = pio; |
642 | return count; |
643 | } |
644 | else |
645 | return -EINVAL; |
646 | } |
647 | |
648 | /* |
649 | * SCSI HBA device attributes we want to |
650 | * make available via sysfs. |
651 | */ |
652 | static struct device_attribute SYM53C500_pio_attr = { |
653 | .attr = { |
654 | .name = "fast_pio" , |
655 | .mode = (S_IRUGO | S_IWUSR), |
656 | }, |
657 | .show = SYM53C500_show_pio, |
658 | .store = SYM53C500_store_pio, |
659 | }; |
660 | |
661 | static struct attribute *SYM53C500_shost_attrs[] = { |
662 | &SYM53C500_pio_attr.attr, |
663 | NULL, |
664 | }; |
665 | |
666 | ATTRIBUTE_GROUPS(SYM53C500_shost); |
667 | |
668 | /* |
669 | * scsi_host_template initializer |
670 | */ |
671 | static const struct scsi_host_template sym53c500_driver_template = { |
672 | .module = THIS_MODULE, |
673 | .name = "SYM53C500" , |
674 | .info = SYM53C500_info, |
675 | .queuecommand = SYM53C500_queue, |
676 | .eh_host_reset_handler = SYM53C500_host_reset, |
677 | .bios_param = SYM53C500_biosparm, |
678 | .proc_name = "SYM53C500" , |
679 | .can_queue = 1, |
680 | .this_id = 7, |
681 | .sg_tablesize = 32, |
682 | .shost_groups = SYM53C500_shost_groups, |
683 | .cmd_size = sizeof(struct sym53c500_cmd_priv), |
684 | }; |
685 | |
686 | static int SYM53C500_config_check(struct pcmcia_device *p_dev, void *priv_data) |
687 | { |
688 | p_dev->io_lines = 10; |
689 | p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH; |
690 | p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO; |
691 | |
692 | if (p_dev->resource[0]->start == 0) |
693 | return -ENODEV; |
694 | |
695 | return pcmcia_request_io(p_dev); |
696 | } |
697 | |
698 | static int |
699 | SYM53C500_config(struct pcmcia_device *link) |
700 | { |
701 | struct scsi_info_t *info = link->priv; |
702 | int ret; |
703 | int irq_level, port_base; |
704 | struct Scsi_Host *host; |
705 | const struct scsi_host_template *tpnt = &sym53c500_driver_template; |
706 | struct sym53c500_data *data; |
707 | |
708 | dev_dbg(&link->dev, "SYM53C500_config\n" ); |
709 | |
710 | info->manf_id = link->manf_id; |
711 | |
712 | ret = pcmcia_loop_config(p_dev: link, conf_check: SYM53C500_config_check, NULL); |
713 | if (ret) |
714 | goto failed; |
715 | |
716 | if (!link->irq) |
717 | goto failed; |
718 | |
719 | ret = pcmcia_enable_device(p_dev: link); |
720 | if (ret) |
721 | goto failed; |
722 | |
723 | /* |
724 | * That's the trouble with copying liberally from another driver. |
725 | * Some things probably aren't relevant, and I suspect this entire |
726 | * section dealing with manufacturer IDs can be scrapped. --rct |
727 | */ |
728 | if ((info->manf_id == MANFID_MACNICA) || |
729 | (info->manf_id == MANFID_PIONEER) || |
730 | (info->manf_id == 0x0098)) { |
731 | /* set ATAcmd */ |
732 | outb(value: 0xb4, port: link->resource[0]->start + 0xd); |
733 | outb(value: 0x24, port: link->resource[0]->start + 0x9); |
734 | outb(value: 0x04, port: link->resource[0]->start + 0xd); |
735 | } |
736 | |
737 | /* |
738 | * irq_level == 0 implies tpnt->can_queue == 0, which |
739 | * is not supported in 2.6. Thus, only irq_level > 0 |
740 | * will be allowed. |
741 | * |
742 | * Possible port_base values are as follows: |
743 | * |
744 | * 0x130, 0x230, 0x280, 0x290, |
745 | * 0x320, 0x330, 0x340, 0x350 |
746 | */ |
747 | port_base = link->resource[0]->start; |
748 | irq_level = link->irq; |
749 | |
750 | DEB(printk("SYM53C500: port_base=0x%x, irq=%d, fast_pio=%d\n" , |
751 | port_base, irq_level, USE_FAST_PIO);) |
752 | |
753 | chip_init(io_port: port_base); |
754 | |
755 | host = scsi_host_alloc(tpnt, sizeof(struct sym53c500_data)); |
756 | if (!host) { |
757 | printk("SYM53C500: Unable to register host, giving up.\n" ); |
758 | goto err_release; |
759 | } |
760 | |
761 | data = (struct sym53c500_data *)host->hostdata; |
762 | |
763 | if (irq_level > 0) { |
764 | if (request_irq(irq: irq_level, handler: SYM53C500_intr, IRQF_SHARED, name: "SYM53C500" , dev: host)) { |
765 | printk("SYM53C500: unable to allocate IRQ %d\n" , irq_level); |
766 | goto err_free_scsi; |
767 | } |
768 | DEB(printk("SYM53C500: allocated IRQ %d\n" , irq_level)); |
769 | } else if (irq_level == 0) { |
770 | DEB(printk("SYM53C500: No interrupts detected\n" )); |
771 | goto err_free_scsi; |
772 | } else { |
773 | DEB(printk("SYM53C500: Shouldn't get here!\n" )); |
774 | goto err_free_scsi; |
775 | } |
776 | |
777 | host->unique_id = port_base; |
778 | host->irq = irq_level; |
779 | host->io_port = port_base; |
780 | host->n_io_port = 0x10; |
781 | host->dma_channel = -1; |
782 | |
783 | /* |
784 | * Note fast_pio is set to USE_FAST_PIO by |
785 | * default, but can be changed via "sysfs". |
786 | */ |
787 | data->fast_pio = USE_FAST_PIO; |
788 | |
789 | info->host = host; |
790 | |
791 | if (scsi_add_host(host, NULL)) |
792 | goto err_free_irq; |
793 | |
794 | scsi_scan_host(host); |
795 | |
796 | return 0; |
797 | |
798 | err_free_irq: |
799 | free_irq(irq_level, host); |
800 | err_free_scsi: |
801 | scsi_host_put(t: host); |
802 | err_release: |
803 | release_region(port_base, 0x10); |
804 | printk(KERN_INFO "sym53c500_cs: no SCSI devices found\n" ); |
805 | return -ENODEV; |
806 | |
807 | failed: |
808 | SYM53C500_release(link); |
809 | return -ENODEV; |
810 | } /* SYM53C500_config */ |
811 | |
812 | static int sym53c500_resume(struct pcmcia_device *link) |
813 | { |
814 | struct scsi_info_t *info = link->priv; |
815 | |
816 | /* See earlier comment about manufacturer IDs. */ |
817 | if ((info->manf_id == MANFID_MACNICA) || |
818 | (info->manf_id == MANFID_PIONEER) || |
819 | (info->manf_id == 0x0098)) { |
820 | outb(value: 0x80, port: link->resource[0]->start + 0xd); |
821 | outb(value: 0x24, port: link->resource[0]->start + 0x9); |
822 | outb(value: 0x04, port: link->resource[0]->start + 0xd); |
823 | } |
824 | /* |
825 | * If things don't work after a "resume", |
826 | * this is a good place to start looking. |
827 | */ |
828 | SYM53C500_int_host_reset(io_port: link->resource[0]->start); |
829 | |
830 | return 0; |
831 | } |
832 | |
833 | static void |
834 | SYM53C500_detach(struct pcmcia_device *link) |
835 | { |
836 | dev_dbg(&link->dev, "SYM53C500_detach\n" ); |
837 | |
838 | SYM53C500_release(link); |
839 | |
840 | kfree(objp: link->priv); |
841 | link->priv = NULL; |
842 | } /* SYM53C500_detach */ |
843 | |
844 | static int |
845 | SYM53C500_probe(struct pcmcia_device *link) |
846 | { |
847 | struct scsi_info_t *info; |
848 | |
849 | dev_dbg(&link->dev, "SYM53C500_attach()\n" ); |
850 | |
851 | /* Create new SCSI device */ |
852 | info = kzalloc(size: sizeof(*info), GFP_KERNEL); |
853 | if (!info) |
854 | return -ENOMEM; |
855 | info->p_dev = link; |
856 | link->priv = info; |
857 | link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO; |
858 | |
859 | return SYM53C500_config(link); |
860 | } /* SYM53C500_attach */ |
861 | |
862 | MODULE_AUTHOR("Bob Tracy <rct@frus.com>" ); |
863 | MODULE_DESCRIPTION("SYM53C500 PCMCIA SCSI driver" ); |
864 | MODULE_LICENSE("GPL" ); |
865 | |
866 | static const struct pcmcia_device_id sym53c500_ids[] = { |
867 | PCMCIA_DEVICE_PROD_ID12("BASICS by New Media Corporation" , "SCSI Sym53C500" , 0x23c78a9d, 0x0099e7f7), |
868 | PCMCIA_DEVICE_PROD_ID12("New Media Corporation" , "SCSI Bus Toaster Sym53C500" , 0x085a850b, 0x45432eb8), |
869 | PCMCIA_DEVICE_PROD_ID2("SCSI9000" , 0x21648f44), |
870 | PCMCIA_DEVICE_NULL, |
871 | }; |
872 | MODULE_DEVICE_TABLE(pcmcia, sym53c500_ids); |
873 | |
874 | static struct pcmcia_driver sym53c500_cs_driver = { |
875 | .owner = THIS_MODULE, |
876 | .name = "sym53c500_cs" , |
877 | .probe = SYM53C500_probe, |
878 | .remove = SYM53C500_detach, |
879 | .id_table = sym53c500_ids, |
880 | .resume = sym53c500_resume, |
881 | }; |
882 | module_pcmcia_driver(sym53c500_cs_driver); |
883 | |