1 | // SPDX-License-Identifier: GPL-2.0 |
2 | /* |
3 | * Driver for Future Domain TMC-16x0 and TMC-3260 SCSI host adapters |
4 | * Copyright 2019 Ondrej Zary |
5 | * |
6 | * Original driver by |
7 | * Rickard E. Faith, faith@cs.unc.edu |
8 | * |
9 | * Future Domain BIOS versions supported for autodetect: |
10 | * 2.0, 3.0, 3.2, 3.4 (1.0), 3.5 (2.0), 3.6, 3.61 |
11 | * Chips supported: |
12 | * TMC-1800, TMC-18C50, TMC-18C30, TMC-36C70 |
13 | * Boards supported: |
14 | * Future Domain TMC-1650, TMC-1660, TMC-1670, TMC-1680, TMC-1610M/MER/MEX |
15 | * Future Domain TMC-3260 (PCI) |
16 | * Quantum ISA-200S, ISA-250MG |
17 | * Adaptec AHA-2920A (PCI) [BUT *NOT* AHA-2920C -- use aic7xxx instead] |
18 | * IBM ? |
19 | * |
20 | * NOTE: |
21 | * |
22 | * The Adaptec AHA-2920C has an Adaptec AIC-7850 chip on it. |
23 | * Use the aic7xxx driver for this board. |
24 | * |
25 | * The Adaptec AHA-2920A has a Future Domain chip on it, so this is the right |
26 | * driver for that card. Unfortunately, the boxes will probably just say |
27 | * "2920", so you'll have to look on the card for a Future Domain logo, or a |
28 | * letter after the 2920. |
29 | * |
30 | * If you have a TMC-8xx or TMC-9xx board, then this is not the driver for |
31 | * your board. |
32 | * |
33 | * DESCRIPTION: |
34 | * |
35 | * This is the Linux low-level SCSI driver for Future Domain TMC-1660/1680 |
36 | * TMC-1650/1670, and TMC-3260 SCSI host adapters. The 1650 and 1670 have a |
37 | * 25-pin external connector, whereas the 1660 and 1680 have a SCSI-2 50-pin |
38 | * high-density external connector. The 1670 and 1680 have floppy disk |
39 | * controllers built in. The TMC-3260 is a PCI bus card. |
40 | * |
41 | * Future Domain's older boards are based on the TMC-1800 chip, and this |
42 | * driver was originally written for a TMC-1680 board with the TMC-1800 chip. |
43 | * More recently, boards are being produced with the TMC-18C50 and TMC-18C30 |
44 | * chips. |
45 | * |
46 | * Please note that the drive ordering that Future Domain implemented in BIOS |
47 | * versions 3.4 and 3.5 is the opposite of the order (currently) used by the |
48 | * rest of the SCSI industry. |
49 | * |
50 | * |
51 | * REFERENCES USED: |
52 | * |
53 | * "TMC-1800 SCSI Chip Specification (FDC-1800T)", Future Domain Corporation, |
54 | * 1990. |
55 | * |
56 | * "Technical Reference Manual: 18C50 SCSI Host Adapter Chip", Future Domain |
57 | * Corporation, January 1992. |
58 | * |
59 | * "LXT SCSI Products: Specifications and OEM Technical Manual (Revision |
60 | * B/September 1991)", Maxtor Corporation, 1991. |
61 | * |
62 | * "7213S product Manual (Revision P3)", Maxtor Corporation, 1992. |
63 | * |
64 | * "Draft Proposed American National Standard: Small Computer System |
65 | * Interface - 2 (SCSI-2)", Global Engineering Documents. (X3T9.2/86-109, |
66 | * revision 10h, October 17, 1991) |
67 | * |
68 | * Private communications, Drew Eckhardt (drew@cs.colorado.edu) and Eric |
69 | * Youngdale (ericy@cais.com), 1992. |
70 | * |
71 | * Private communication, Tuong Le (Future Domain Engineering department), |
72 | * 1994. (Disk geometry computations for Future Domain BIOS version 3.4, and |
73 | * TMC-18C30 detection.) |
74 | * |
75 | * Hogan, Thom. The Programmer's PC Sourcebook. Microsoft Press, 1988. Page |
76 | * 60 (2.39: Disk Partition Table Layout). |
77 | * |
78 | * "18C30 Technical Reference Manual", Future Domain Corporation, 1993, page |
79 | * 6-1. |
80 | */ |
81 | |
82 | #include <linux/module.h> |
83 | #include <linux/interrupt.h> |
84 | #include <linux/delay.h> |
85 | #include <linux/pci.h> |
86 | #include <linux/workqueue.h> |
87 | #include <scsi/scsicam.h> |
88 | #include <scsi/scsi_cmnd.h> |
89 | #include <scsi/scsi_device.h> |
90 | #include <scsi/scsi_host.h> |
91 | #include "fdomain.h" |
92 | |
93 | /* |
94 | * FIFO_COUNT: The host adapter has an 8K cache (host adapters based on the |
95 | * 18C30 chip have a 2k cache). When this many 512 byte blocks are filled by |
96 | * the SCSI device, an interrupt will be raised. Therefore, this could be as |
97 | * low as 0, or as high as 16. Note, however, that values which are too high |
98 | * or too low seem to prevent any interrupts from occurring, and thereby lock |
99 | * up the machine. |
100 | */ |
101 | #define FIFO_COUNT 2 /* Number of 512 byte blocks before INTR */ |
102 | #define PARITY_MASK ACTL_PAREN /* Parity enabled, 0 = disabled */ |
103 | |
104 | enum chip_type { |
105 | unknown = 0x00, |
106 | tmc1800 = 0x01, |
107 | tmc18c50 = 0x02, |
108 | tmc18c30 = 0x03, |
109 | }; |
110 | |
111 | struct fdomain { |
112 | int base; |
113 | struct scsi_cmnd *cur_cmd; |
114 | enum chip_type chip; |
115 | struct work_struct work; |
116 | }; |
117 | |
118 | static struct scsi_pointer *fdomain_scsi_pointer(struct scsi_cmnd *cmd) |
119 | { |
120 | return scsi_cmd_priv(cmd); |
121 | } |
122 | |
123 | static inline void fdomain_make_bus_idle(struct fdomain *fd) |
124 | { |
125 | outb(value: 0, port: fd->base + REG_BCTL); |
126 | outb(value: 0, port: fd->base + REG_MCTL); |
127 | if (fd->chip == tmc18c50 || fd->chip == tmc18c30) |
128 | /* Clear forced intr. */ |
129 | outb(ACTL_RESET | ACTL_CLRFIRQ | PARITY_MASK, |
130 | port: fd->base + REG_ACTL); |
131 | else |
132 | outb(ACTL_RESET | PARITY_MASK, port: fd->base + REG_ACTL); |
133 | } |
134 | |
135 | static enum chip_type fdomain_identify(int port) |
136 | { |
137 | u16 id = inb(port: port + REG_ID_LSB) | inb(port: port + REG_ID_MSB) << 8; |
138 | |
139 | switch (id) { |
140 | case 0x6127: |
141 | return tmc1800; |
142 | case 0x60e9: /* 18c50 or 18c30 */ |
143 | break; |
144 | default: |
145 | return unknown; |
146 | } |
147 | |
148 | /* Try to toggle 32-bit mode. This only works on an 18c30 chip. */ |
149 | outb(CFG2_32BIT, port: port + REG_CFG2); |
150 | if ((inb(port: port + REG_CFG2) & CFG2_32BIT)) { |
151 | outb(value: 0, port: port + REG_CFG2); |
152 | if ((inb(port: port + REG_CFG2) & CFG2_32BIT) == 0) |
153 | return tmc18c30; |
154 | } |
155 | /* If that failed, we are an 18c50. */ |
156 | return tmc18c50; |
157 | } |
158 | |
159 | static int fdomain_test_loopback(int base) |
160 | { |
161 | int i; |
162 | |
163 | for (i = 0; i < 255; i++) { |
164 | outb(value: i, port: base + REG_LOOPBACK); |
165 | if (inb(port: base + REG_LOOPBACK) != i) |
166 | return 1; |
167 | } |
168 | |
169 | return 0; |
170 | } |
171 | |
172 | static void fdomain_reset(int base) |
173 | { |
174 | outb(BCTL_RST, port: base + REG_BCTL); |
175 | mdelay(20); |
176 | outb(value: 0, port: base + REG_BCTL); |
177 | mdelay(1150); |
178 | outb(value: 0, port: base + REG_MCTL); |
179 | outb(PARITY_MASK, port: base + REG_ACTL); |
180 | } |
181 | |
182 | static int fdomain_select(struct Scsi_Host *sh, int target) |
183 | { |
184 | int status; |
185 | unsigned long timeout; |
186 | struct fdomain *fd = shost_priv(shost: sh); |
187 | |
188 | outb(BCTL_BUSEN | BCTL_SEL, port: fd->base + REG_BCTL); |
189 | outb(BIT(sh->this_id) | BIT(target), port: fd->base + REG_SCSI_DATA_NOACK); |
190 | |
191 | /* Stop arbitration and enable parity */ |
192 | outb(PARITY_MASK, port: fd->base + REG_ACTL); |
193 | |
194 | timeout = 350; /* 350 msec */ |
195 | |
196 | do { |
197 | status = inb(port: fd->base + REG_BSTAT); |
198 | if (status & BSTAT_BSY) { |
199 | /* Enable SCSI Bus */ |
200 | /* (on error, should make bus idle with 0) */ |
201 | outb(BCTL_BUSEN, port: fd->base + REG_BCTL); |
202 | return 0; |
203 | } |
204 | mdelay(1); |
205 | } while (--timeout); |
206 | fdomain_make_bus_idle(fd); |
207 | return 1; |
208 | } |
209 | |
210 | static void fdomain_finish_cmd(struct fdomain *fd) |
211 | { |
212 | outb(value: 0, port: fd->base + REG_ICTL); |
213 | fdomain_make_bus_idle(fd); |
214 | scsi_done(cmd: fd->cur_cmd); |
215 | fd->cur_cmd = NULL; |
216 | } |
217 | |
218 | static void fdomain_read_data(struct scsi_cmnd *cmd) |
219 | { |
220 | struct fdomain *fd = shost_priv(shost: cmd->device->host); |
221 | unsigned char *virt, *ptr; |
222 | size_t offset, len; |
223 | |
224 | while ((len = inw(port: fd->base + REG_FIFO_COUNT)) > 0) { |
225 | offset = scsi_bufflen(cmd) - scsi_get_resid(cmd); |
226 | virt = scsi_kmap_atomic_sg(sg: scsi_sglist(cmd), sg_count: scsi_sg_count(cmd), |
227 | offset: &offset, len: &len); |
228 | ptr = virt + offset; |
229 | if (len & 1) |
230 | *ptr++ = inb(port: fd->base + REG_FIFO); |
231 | if (len > 1) |
232 | insw(port: fd->base + REG_FIFO, addr: ptr, count: len >> 1); |
233 | scsi_set_resid(cmd, resid: scsi_get_resid(cmd) - len); |
234 | scsi_kunmap_atomic_sg(virt); |
235 | } |
236 | } |
237 | |
238 | static void fdomain_write_data(struct scsi_cmnd *cmd) |
239 | { |
240 | struct fdomain *fd = shost_priv(shost: cmd->device->host); |
241 | /* 8k FIFO for pre-tmc18c30 chips, 2k FIFO for tmc18c30 */ |
242 | int FIFO_Size = fd->chip == tmc18c30 ? 0x800 : 0x2000; |
243 | unsigned char *virt, *ptr; |
244 | size_t offset, len; |
245 | |
246 | while ((len = FIFO_Size - inw(port: fd->base + REG_FIFO_COUNT)) > 512) { |
247 | offset = scsi_bufflen(cmd) - scsi_get_resid(cmd); |
248 | if (len + offset > scsi_bufflen(cmd)) { |
249 | len = scsi_bufflen(cmd) - offset; |
250 | if (len == 0) |
251 | break; |
252 | } |
253 | virt = scsi_kmap_atomic_sg(sg: scsi_sglist(cmd), sg_count: scsi_sg_count(cmd), |
254 | offset: &offset, len: &len); |
255 | ptr = virt + offset; |
256 | if (len & 1) |
257 | outb(value: *ptr++, port: fd->base + REG_FIFO); |
258 | if (len > 1) |
259 | outsw(port: fd->base + REG_FIFO, addr: ptr, count: len >> 1); |
260 | scsi_set_resid(cmd, resid: scsi_get_resid(cmd) - len); |
261 | scsi_kunmap_atomic_sg(virt); |
262 | } |
263 | } |
264 | |
265 | static void fdomain_work(struct work_struct *work) |
266 | { |
267 | struct fdomain *fd = container_of(work, struct fdomain, work); |
268 | struct Scsi_Host *sh = container_of((void *)fd, struct Scsi_Host, |
269 | hostdata); |
270 | struct scsi_cmnd *cmd = fd->cur_cmd; |
271 | struct scsi_pointer *scsi_pointer = fdomain_scsi_pointer(cmd); |
272 | unsigned long flags; |
273 | int status; |
274 | int done = 0; |
275 | |
276 | spin_lock_irqsave(sh->host_lock, flags); |
277 | |
278 | if (scsi_pointer->phase & in_arbitration) { |
279 | status = inb(port: fd->base + REG_ASTAT); |
280 | if (!(status & ASTAT_ARB)) { |
281 | set_host_byte(cmd, status: DID_BUS_BUSY); |
282 | fdomain_finish_cmd(fd); |
283 | goto out; |
284 | } |
285 | scsi_pointer->phase = in_selection; |
286 | |
287 | outb(ICTL_SEL | FIFO_COUNT, port: fd->base + REG_ICTL); |
288 | outb(BCTL_BUSEN | BCTL_SEL, port: fd->base + REG_BCTL); |
289 | outb(BIT(cmd->device->host->this_id) | BIT(scmd_id(cmd)), |
290 | port: fd->base + REG_SCSI_DATA_NOACK); |
291 | /* Stop arbitration and enable parity */ |
292 | outb(ACTL_IRQEN | PARITY_MASK, port: fd->base + REG_ACTL); |
293 | goto out; |
294 | } else if (scsi_pointer->phase & in_selection) { |
295 | status = inb(port: fd->base + REG_BSTAT); |
296 | if (!(status & BSTAT_BSY)) { |
297 | /* Try again, for slow devices */ |
298 | if (fdomain_select(sh: cmd->device->host, scmd_id(cmd))) { |
299 | set_host_byte(cmd, status: DID_NO_CONNECT); |
300 | fdomain_finish_cmd(fd); |
301 | goto out; |
302 | } |
303 | /* Stop arbitration and enable parity */ |
304 | outb(ACTL_IRQEN | PARITY_MASK, port: fd->base + REG_ACTL); |
305 | } |
306 | scsi_pointer->phase = in_other; |
307 | outb(ICTL_FIFO | ICTL_REQ | FIFO_COUNT, port: fd->base + REG_ICTL); |
308 | outb(BCTL_BUSEN, port: fd->base + REG_BCTL); |
309 | goto out; |
310 | } |
311 | |
312 | /* fdomain_scsi_pointer(cur_cmd)->phase == in_other: this is the body of the routine */ |
313 | status = inb(port: fd->base + REG_BSTAT); |
314 | |
315 | if (status & BSTAT_REQ) { |
316 | switch (status & (BSTAT_MSG | BSTAT_CMD | BSTAT_IO)) { |
317 | case BSTAT_CMD: /* COMMAND OUT */ |
318 | outb(value: cmd->cmnd[scsi_pointer->sent_command++], |
319 | port: fd->base + REG_SCSI_DATA); |
320 | break; |
321 | case 0: /* DATA OUT -- tmc18c50/tmc18c30 only */ |
322 | if (fd->chip != tmc1800 && !scsi_pointer->have_data_in) { |
323 | scsi_pointer->have_data_in = -1; |
324 | outb(ACTL_IRQEN | ACTL_FIFOWR | ACTL_FIFOEN | |
325 | PARITY_MASK, port: fd->base + REG_ACTL); |
326 | } |
327 | break; |
328 | case BSTAT_IO: /* DATA IN -- tmc18c50/tmc18c30 only */ |
329 | if (fd->chip != tmc1800 && !scsi_pointer->have_data_in) { |
330 | scsi_pointer->have_data_in = 1; |
331 | outb(ACTL_IRQEN | ACTL_FIFOEN | PARITY_MASK, |
332 | port: fd->base + REG_ACTL); |
333 | } |
334 | break; |
335 | case BSTAT_CMD | BSTAT_IO: /* STATUS IN */ |
336 | scsi_pointer->Status = inb(port: fd->base + REG_SCSI_DATA); |
337 | break; |
338 | case BSTAT_MSG | BSTAT_CMD: /* MESSAGE OUT */ |
339 | outb(value: MESSAGE_REJECT, port: fd->base + REG_SCSI_DATA); |
340 | break; |
341 | case BSTAT_MSG | BSTAT_CMD | BSTAT_IO: /* MESSAGE IN */ |
342 | scsi_pointer->Message = inb(port: fd->base + REG_SCSI_DATA); |
343 | if (scsi_pointer->Message == COMMAND_COMPLETE) |
344 | ++done; |
345 | break; |
346 | } |
347 | } |
348 | |
349 | if (fd->chip == tmc1800 && !scsi_pointer->have_data_in && |
350 | scsi_pointer->sent_command >= cmd->cmd_len) { |
351 | if (cmd->sc_data_direction == DMA_TO_DEVICE) { |
352 | scsi_pointer->have_data_in = -1; |
353 | outb(ACTL_IRQEN | ACTL_FIFOWR | ACTL_FIFOEN | |
354 | PARITY_MASK, port: fd->base + REG_ACTL); |
355 | } else { |
356 | scsi_pointer->have_data_in = 1; |
357 | outb(ACTL_IRQEN | ACTL_FIFOEN | PARITY_MASK, |
358 | port: fd->base + REG_ACTL); |
359 | } |
360 | } |
361 | |
362 | if (scsi_pointer->have_data_in == -1) /* DATA OUT */ |
363 | fdomain_write_data(cmd); |
364 | |
365 | if (scsi_pointer->have_data_in == 1) /* DATA IN */ |
366 | fdomain_read_data(cmd); |
367 | |
368 | if (done) { |
369 | set_status_byte(cmd, status: scsi_pointer->Status); |
370 | set_host_byte(cmd, status: DID_OK); |
371 | scsi_msg_to_host_byte(cmd, msg: scsi_pointer->Message); |
372 | fdomain_finish_cmd(fd); |
373 | } else { |
374 | if (scsi_pointer->phase & disconnect) { |
375 | outb(ICTL_FIFO | ICTL_SEL | ICTL_REQ | FIFO_COUNT, |
376 | port: fd->base + REG_ICTL); |
377 | outb(value: 0, port: fd->base + REG_BCTL); |
378 | } else |
379 | outb(ICTL_FIFO | ICTL_REQ | FIFO_COUNT, |
380 | port: fd->base + REG_ICTL); |
381 | } |
382 | out: |
383 | spin_unlock_irqrestore(lock: sh->host_lock, flags); |
384 | } |
385 | |
386 | static irqreturn_t fdomain_irq(int irq, void *dev_id) |
387 | { |
388 | struct fdomain *fd = dev_id; |
389 | |
390 | /* Is it our IRQ? */ |
391 | if ((inb(port: fd->base + REG_ASTAT) & ASTAT_IRQ) == 0) |
392 | return IRQ_NONE; |
393 | |
394 | outb(value: 0, port: fd->base + REG_ICTL); |
395 | |
396 | /* We usually have one spurious interrupt after each command. */ |
397 | if (!fd->cur_cmd) /* Spurious interrupt */ |
398 | return IRQ_NONE; |
399 | |
400 | schedule_work(work: &fd->work); |
401 | |
402 | return IRQ_HANDLED; |
403 | } |
404 | |
405 | static int fdomain_queue(struct Scsi_Host *sh, struct scsi_cmnd *cmd) |
406 | { |
407 | struct scsi_pointer *scsi_pointer = fdomain_scsi_pointer(cmd); |
408 | struct fdomain *fd = shost_priv(shost: cmd->device->host); |
409 | unsigned long flags; |
410 | |
411 | scsi_pointer->Status = 0; |
412 | scsi_pointer->Message = 0; |
413 | scsi_pointer->have_data_in = 0; |
414 | scsi_pointer->sent_command = 0; |
415 | scsi_pointer->phase = in_arbitration; |
416 | scsi_set_resid(cmd, resid: scsi_bufflen(cmd)); |
417 | |
418 | spin_lock_irqsave(sh->host_lock, flags); |
419 | |
420 | fd->cur_cmd = cmd; |
421 | |
422 | fdomain_make_bus_idle(fd); |
423 | |
424 | /* Start arbitration */ |
425 | outb(value: 0, port: fd->base + REG_ICTL); |
426 | outb(value: 0, port: fd->base + REG_BCTL); /* Disable data drivers */ |
427 | /* Set our id bit */ |
428 | outb(BIT(cmd->device->host->this_id), port: fd->base + REG_SCSI_DATA_NOACK); |
429 | outb(ICTL_ARB, port: fd->base + REG_ICTL); |
430 | /* Start arbitration */ |
431 | outb(ACTL_ARB | ACTL_IRQEN | PARITY_MASK, port: fd->base + REG_ACTL); |
432 | |
433 | spin_unlock_irqrestore(lock: sh->host_lock, flags); |
434 | |
435 | return 0; |
436 | } |
437 | |
438 | static int fdomain_abort(struct scsi_cmnd *cmd) |
439 | { |
440 | struct Scsi_Host *sh = cmd->device->host; |
441 | struct fdomain *fd = shost_priv(shost: sh); |
442 | unsigned long flags; |
443 | |
444 | if (!fd->cur_cmd) |
445 | return FAILED; |
446 | |
447 | spin_lock_irqsave(sh->host_lock, flags); |
448 | |
449 | fdomain_make_bus_idle(fd); |
450 | fdomain_scsi_pointer(cmd: fd->cur_cmd)->phase |= aborted; |
451 | |
452 | /* Aborts are not done well. . . */ |
453 | set_host_byte(cmd: fd->cur_cmd, status: DID_ABORT); |
454 | fdomain_finish_cmd(fd); |
455 | spin_unlock_irqrestore(lock: sh->host_lock, flags); |
456 | return SUCCESS; |
457 | } |
458 | |
459 | static int fdomain_host_reset(struct scsi_cmnd *cmd) |
460 | { |
461 | struct Scsi_Host *sh = cmd->device->host; |
462 | struct fdomain *fd = shost_priv(shost: sh); |
463 | unsigned long flags; |
464 | |
465 | spin_lock_irqsave(sh->host_lock, flags); |
466 | fdomain_reset(base: fd->base); |
467 | spin_unlock_irqrestore(lock: sh->host_lock, flags); |
468 | return SUCCESS; |
469 | } |
470 | |
471 | static int fdomain_biosparam(struct scsi_device *sdev, |
472 | struct block_device *bdev, sector_t capacity, |
473 | int geom[]) |
474 | { |
475 | unsigned char *p = scsi_bios_ptable(bdev); |
476 | |
477 | if (p && p[65] == 0xaa && p[64] == 0x55 /* Partition table valid */ |
478 | && p[4]) { /* Partition type */ |
479 | geom[0] = p[5] + 1; /* heads */ |
480 | geom[1] = p[6] & 0x3f; /* sectors */ |
481 | } else { |
482 | if (capacity >= 0x7e0000) { |
483 | geom[0] = 255; /* heads */ |
484 | geom[1] = 63; /* sectors */ |
485 | } else if (capacity >= 0x200000) { |
486 | geom[0] = 128; /* heads */ |
487 | geom[1] = 63; /* sectors */ |
488 | } else { |
489 | geom[0] = 64; /* heads */ |
490 | geom[1] = 32; /* sectors */ |
491 | } |
492 | } |
493 | geom[2] = sector_div(capacity, geom[0] * geom[1]); |
494 | kfree(objp: p); |
495 | |
496 | return 0; |
497 | } |
498 | |
499 | static const struct scsi_host_template fdomain_template = { |
500 | .module = THIS_MODULE, |
501 | .name = "Future Domain TMC-16x0" , |
502 | .proc_name = "fdomain" , |
503 | .queuecommand = fdomain_queue, |
504 | .eh_abort_handler = fdomain_abort, |
505 | .eh_host_reset_handler = fdomain_host_reset, |
506 | .bios_param = fdomain_biosparam, |
507 | .can_queue = 1, |
508 | .this_id = 7, |
509 | .sg_tablesize = 64, |
510 | .dma_boundary = PAGE_SIZE - 1, |
511 | .cmd_size = sizeof(struct scsi_pointer), |
512 | }; |
513 | |
514 | struct Scsi_Host *fdomain_create(int base, int irq, int this_id, |
515 | struct device *dev) |
516 | { |
517 | struct Scsi_Host *sh; |
518 | struct fdomain *fd; |
519 | enum chip_type chip; |
520 | static const char * const chip_names[] = { |
521 | "Unknown" , "TMC-1800" , "TMC-18C50" , "TMC-18C30" |
522 | }; |
523 | unsigned long irq_flags = 0; |
524 | |
525 | chip = fdomain_identify(port: base); |
526 | if (!chip) |
527 | return NULL; |
528 | |
529 | fdomain_reset(base); |
530 | |
531 | if (fdomain_test_loopback(base)) |
532 | return NULL; |
533 | |
534 | if (!irq) { |
535 | dev_err(dev, "card has no IRQ assigned" ); |
536 | return NULL; |
537 | } |
538 | |
539 | sh = scsi_host_alloc(&fdomain_template, sizeof(struct fdomain)); |
540 | if (!sh) |
541 | return NULL; |
542 | |
543 | if (this_id) |
544 | sh->this_id = this_id & 0x07; |
545 | |
546 | sh->irq = irq; |
547 | sh->io_port = base; |
548 | sh->n_io_port = FDOMAIN_REGION_SIZE; |
549 | |
550 | fd = shost_priv(shost: sh); |
551 | fd->base = base; |
552 | fd->chip = chip; |
553 | INIT_WORK(&fd->work, fdomain_work); |
554 | |
555 | if (dev_is_pci(dev) || !strcmp(dev->bus->name, "pcmcia" )) |
556 | irq_flags = IRQF_SHARED; |
557 | |
558 | if (request_irq(irq, handler: fdomain_irq, flags: irq_flags, name: "fdomain" , dev: fd)) |
559 | goto fail_put; |
560 | |
561 | shost_printk(KERN_INFO, sh, "%s chip at 0x%x irq %d SCSI ID %d\n" , |
562 | dev_is_pci(dev) ? "TMC-36C70 (PCI bus)" : chip_names[chip], |
563 | base, irq, sh->this_id); |
564 | |
565 | if (scsi_add_host(host: sh, dev)) |
566 | goto fail_free_irq; |
567 | |
568 | scsi_scan_host(sh); |
569 | |
570 | return sh; |
571 | |
572 | fail_free_irq: |
573 | free_irq(irq, fd); |
574 | fail_put: |
575 | scsi_host_put(t: sh); |
576 | return NULL; |
577 | } |
578 | EXPORT_SYMBOL_GPL(fdomain_create); |
579 | |
580 | int fdomain_destroy(struct Scsi_Host *sh) |
581 | { |
582 | struct fdomain *fd = shost_priv(shost: sh); |
583 | |
584 | cancel_work_sync(work: &fd->work); |
585 | scsi_remove_host(sh); |
586 | if (sh->irq) |
587 | free_irq(sh->irq, fd); |
588 | scsi_host_put(t: sh); |
589 | return 0; |
590 | } |
591 | EXPORT_SYMBOL_GPL(fdomain_destroy); |
592 | |
593 | #ifdef CONFIG_PM_SLEEP |
594 | static int fdomain_resume(struct device *dev) |
595 | { |
596 | struct fdomain *fd = shost_priv(shost: dev_get_drvdata(dev)); |
597 | |
598 | fdomain_reset(base: fd->base); |
599 | return 0; |
600 | } |
601 | |
602 | static SIMPLE_DEV_PM_OPS(fdomain_pm_ops, NULL, fdomain_resume); |
603 | #endif /* CONFIG_PM_SLEEP */ |
604 | |
605 | MODULE_AUTHOR("Ondrej Zary, Rickard E. Faith" ); |
606 | MODULE_DESCRIPTION("Future Domain TMC-16x0/TMC-3260 SCSI driver" ); |
607 | MODULE_LICENSE("GPL" ); |
608 | |