Commit | Line | Data |
---|---|---|
ebeb4665 OZ |
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 */ | |
1697c6a6 | 102 | #define PARITY_MASK ACTL_PAREN /* Parity enabled, 0 = disabled */ |
ebeb4665 OZ |
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 inline void fdomain_make_bus_idle(struct fdomain *fd) | |
119 | { | |
1697c6a6 OZ |
120 | outb(0, fd->base + REG_BCTL); |
121 | outb(0, fd->base + REG_MCTL); | |
ebeb4665 OZ |
122 | if (fd->chip == tmc18c50 || fd->chip == tmc18c30) |
123 | /* Clear forced intr. */ | |
1697c6a6 OZ |
124 | outb(ACTL_RESET | ACTL_CLRFIRQ | PARITY_MASK, |
125 | fd->base + REG_ACTL); | |
ebeb4665 | 126 | else |
1697c6a6 | 127 | outb(ACTL_RESET | PARITY_MASK, fd->base + REG_ACTL); |
ebeb4665 OZ |
128 | } |
129 | ||
130 | static enum chip_type fdomain_identify(int port) | |
131 | { | |
1697c6a6 | 132 | u16 id = inb(port + REG_ID_LSB) | inb(port + REG_ID_MSB) << 8; |
ebeb4665 OZ |
133 | |
134 | switch (id) { | |
135 | case 0x6127: | |
136 | return tmc1800; | |
137 | case 0x60e9: /* 18c50 or 18c30 */ | |
138 | break; | |
139 | default: | |
140 | return unknown; | |
141 | } | |
142 | ||
143 | /* Try to toggle 32-bit mode. This only works on an 18c30 chip. */ | |
1697c6a6 OZ |
144 | outb(CFG2_32BIT, port + REG_CFG2); |
145 | if ((inb(port + REG_CFG2) & CFG2_32BIT)) { | |
146 | outb(0, port + REG_CFG2); | |
147 | if ((inb(port + REG_CFG2) & CFG2_32BIT) == 0) | |
ebeb4665 OZ |
148 | return tmc18c30; |
149 | } | |
150 | /* If that failed, we are an 18c50. */ | |
151 | return tmc18c50; | |
152 | } | |
153 | ||
154 | static int fdomain_test_loopback(int base) | |
155 | { | |
156 | int i; | |
157 | ||
158 | for (i = 0; i < 255; i++) { | |
1697c6a6 OZ |
159 | outb(i, base + REG_LOOPBACK); |
160 | if (inb(base + REG_LOOPBACK) != i) | |
ebeb4665 OZ |
161 | return 1; |
162 | } | |
163 | ||
164 | return 0; | |
165 | } | |
166 | ||
167 | static void fdomain_reset(int base) | |
168 | { | |
a9651be7 | 169 | outb(BCTL_RST, base + REG_BCTL); |
ebeb4665 | 170 | mdelay(20); |
1697c6a6 | 171 | outb(0, base + REG_BCTL); |
ebeb4665 | 172 | mdelay(1150); |
1697c6a6 OZ |
173 | outb(0, base + REG_MCTL); |
174 | outb(PARITY_MASK, base + REG_ACTL); | |
ebeb4665 OZ |
175 | } |
176 | ||
177 | static int fdomain_select(struct Scsi_Host *sh, int target) | |
178 | { | |
179 | int status; | |
180 | unsigned long timeout; | |
181 | struct fdomain *fd = shost_priv(sh); | |
182 | ||
1697c6a6 OZ |
183 | outb(BCTL_BUSEN | BCTL_SEL, fd->base + REG_BCTL); |
184 | outb(BIT(sh->this_id) | BIT(target), fd->base + REG_SCSI_DATA_NOACK); | |
ebeb4665 OZ |
185 | |
186 | /* Stop arbitration and enable parity */ | |
1697c6a6 | 187 | outb(PARITY_MASK, fd->base + REG_ACTL); |
ebeb4665 OZ |
188 | |
189 | timeout = 350; /* 350 msec */ | |
190 | ||
191 | do { | |
1697c6a6 OZ |
192 | status = inb(fd->base + REG_BSTAT); |
193 | if (status & BSTAT_BSY) { | |
ebeb4665 OZ |
194 | /* Enable SCSI Bus */ |
195 | /* (on error, should make bus idle with 0) */ | |
1697c6a6 | 196 | outb(BCTL_BUSEN, fd->base + REG_BCTL); |
ebeb4665 OZ |
197 | return 0; |
198 | } | |
199 | mdelay(1); | |
200 | } while (--timeout); | |
201 | fdomain_make_bus_idle(fd); | |
202 | return 1; | |
203 | } | |
204 | ||
b2e88c97 | 205 | static void fdomain_finish_cmd(struct fdomain *fd) |
ebeb4665 | 206 | { |
1697c6a6 | 207 | outb(0, fd->base + REG_ICTL); |
ebeb4665 | 208 | fdomain_make_bus_idle(fd); |
a0c22474 | 209 | scsi_done(fd->cur_cmd); |
ebeb4665 OZ |
210 | fd->cur_cmd = NULL; |
211 | } | |
212 | ||
213 | static void fdomain_read_data(struct scsi_cmnd *cmd) | |
214 | { | |
215 | struct fdomain *fd = shost_priv(cmd->device->host); | |
216 | unsigned char *virt, *ptr; | |
217 | size_t offset, len; | |
218 | ||
1697c6a6 | 219 | while ((len = inw(fd->base + REG_FIFO_COUNT)) > 0) { |
ebeb4665 OZ |
220 | offset = scsi_bufflen(cmd) - scsi_get_resid(cmd); |
221 | virt = scsi_kmap_atomic_sg(scsi_sglist(cmd), scsi_sg_count(cmd), | |
222 | &offset, &len); | |
223 | ptr = virt + offset; | |
224 | if (len & 1) | |
1697c6a6 | 225 | *ptr++ = inb(fd->base + REG_FIFO); |
ebeb4665 | 226 | if (len > 1) |
1697c6a6 | 227 | insw(fd->base + REG_FIFO, ptr, len >> 1); |
ebeb4665 OZ |
228 | scsi_set_resid(cmd, scsi_get_resid(cmd) - len); |
229 | scsi_kunmap_atomic_sg(virt); | |
230 | } | |
231 | } | |
232 | ||
233 | static void fdomain_write_data(struct scsi_cmnd *cmd) | |
234 | { | |
235 | struct fdomain *fd = shost_priv(cmd->device->host); | |
236 | /* 8k FIFO for pre-tmc18c30 chips, 2k FIFO for tmc18c30 */ | |
237 | int FIFO_Size = fd->chip == tmc18c30 ? 0x800 : 0x2000; | |
238 | unsigned char *virt, *ptr; | |
239 | size_t offset, len; | |
240 | ||
1697c6a6 | 241 | while ((len = FIFO_Size - inw(fd->base + REG_FIFO_COUNT)) > 512) { |
ebeb4665 OZ |
242 | offset = scsi_bufflen(cmd) - scsi_get_resid(cmd); |
243 | if (len + offset > scsi_bufflen(cmd)) { | |
244 | len = scsi_bufflen(cmd) - offset; | |
245 | if (len == 0) | |
246 | break; | |
247 | } | |
248 | virt = scsi_kmap_atomic_sg(scsi_sglist(cmd), scsi_sg_count(cmd), | |
249 | &offset, &len); | |
250 | ptr = virt + offset; | |
251 | if (len & 1) | |
1697c6a6 | 252 | outb(*ptr++, fd->base + REG_FIFO); |
ebeb4665 | 253 | if (len > 1) |
1697c6a6 | 254 | outsw(fd->base + REG_FIFO, ptr, len >> 1); |
ebeb4665 OZ |
255 | scsi_set_resid(cmd, scsi_get_resid(cmd) - len); |
256 | scsi_kunmap_atomic_sg(virt); | |
257 | } | |
258 | } | |
259 | ||
260 | static void fdomain_work(struct work_struct *work) | |
261 | { | |
262 | struct fdomain *fd = container_of(work, struct fdomain, work); | |
263 | struct Scsi_Host *sh = container_of((void *)fd, struct Scsi_Host, | |
264 | hostdata); | |
265 | struct scsi_cmnd *cmd = fd->cur_cmd; | |
266 | unsigned long flags; | |
267 | int status; | |
268 | int done = 0; | |
269 | ||
270 | spin_lock_irqsave(sh->host_lock, flags); | |
271 | ||
272 | if (cmd->SCp.phase & in_arbitration) { | |
1697c6a6 OZ |
273 | status = inb(fd->base + REG_ASTAT); |
274 | if (!(status & ASTAT_ARB)) { | |
b2e88c97 HR |
275 | set_host_byte(cmd, DID_BUS_BUSY); |
276 | fdomain_finish_cmd(fd); | |
ebeb4665 OZ |
277 | goto out; |
278 | } | |
279 | cmd->SCp.phase = in_selection; | |
280 | ||
1697c6a6 OZ |
281 | outb(ICTL_SEL | FIFO_COUNT, fd->base + REG_ICTL); |
282 | outb(BCTL_BUSEN | BCTL_SEL, fd->base + REG_BCTL); | |
283 | outb(BIT(cmd->device->host->this_id) | BIT(scmd_id(cmd)), | |
284 | fd->base + REG_SCSI_DATA_NOACK); | |
ebeb4665 | 285 | /* Stop arbitration and enable parity */ |
1697c6a6 | 286 | outb(ACTL_IRQEN | PARITY_MASK, fd->base + REG_ACTL); |
ebeb4665 OZ |
287 | goto out; |
288 | } else if (cmd->SCp.phase & in_selection) { | |
1697c6a6 OZ |
289 | status = inb(fd->base + REG_BSTAT); |
290 | if (!(status & BSTAT_BSY)) { | |
ebeb4665 OZ |
291 | /* Try again, for slow devices */ |
292 | if (fdomain_select(cmd->device->host, scmd_id(cmd))) { | |
b2e88c97 HR |
293 | set_host_byte(cmd, DID_NO_CONNECT); |
294 | fdomain_finish_cmd(fd); | |
ebeb4665 OZ |
295 | goto out; |
296 | } | |
297 | /* Stop arbitration and enable parity */ | |
1697c6a6 | 298 | outb(ACTL_IRQEN | PARITY_MASK, fd->base + REG_ACTL); |
ebeb4665 OZ |
299 | } |
300 | cmd->SCp.phase = in_other; | |
1697c6a6 OZ |
301 | outb(ICTL_FIFO | ICTL_REQ | FIFO_COUNT, fd->base + REG_ICTL); |
302 | outb(BCTL_BUSEN, fd->base + REG_BCTL); | |
ebeb4665 OZ |
303 | goto out; |
304 | } | |
305 | ||
306 | /* cur_cmd->SCp.phase == in_other: this is the body of the routine */ | |
1697c6a6 | 307 | status = inb(fd->base + REG_BSTAT); |
ebeb4665 | 308 | |
1697c6a6 | 309 | if (status & BSTAT_REQ) { |
7a1c0b79 | 310 | switch (status & (BSTAT_MSG | BSTAT_CMD | BSTAT_IO)) { |
1697c6a6 | 311 | case BSTAT_CMD: /* COMMAND OUT */ |
ebeb4665 | 312 | outb(cmd->cmnd[cmd->SCp.sent_command++], |
1697c6a6 | 313 | fd->base + REG_SCSI_DATA); |
ebeb4665 | 314 | break; |
1697c6a6 | 315 | case 0: /* DATA OUT -- tmc18c50/tmc18c30 only */ |
ebeb4665 OZ |
316 | if (fd->chip != tmc1800 && !cmd->SCp.have_data_in) { |
317 | cmd->SCp.have_data_in = -1; | |
1697c6a6 OZ |
318 | outb(ACTL_IRQEN | ACTL_FIFOWR | ACTL_FIFOEN | |
319 | PARITY_MASK, fd->base + REG_ACTL); | |
ebeb4665 OZ |
320 | } |
321 | break; | |
1697c6a6 | 322 | case BSTAT_IO: /* DATA IN -- tmc18c50/tmc18c30 only */ |
ebeb4665 OZ |
323 | if (fd->chip != tmc1800 && !cmd->SCp.have_data_in) { |
324 | cmd->SCp.have_data_in = 1; | |
1697c6a6 OZ |
325 | outb(ACTL_IRQEN | ACTL_FIFOEN | PARITY_MASK, |
326 | fd->base + REG_ACTL); | |
ebeb4665 OZ |
327 | } |
328 | break; | |
1697c6a6 OZ |
329 | case BSTAT_CMD | BSTAT_IO: /* STATUS IN */ |
330 | cmd->SCp.Status = inb(fd->base + REG_SCSI_DATA); | |
ebeb4665 | 331 | break; |
1697c6a6 OZ |
332 | case BSTAT_MSG | BSTAT_CMD: /* MESSAGE OUT */ |
333 | outb(MESSAGE_REJECT, fd->base + REG_SCSI_DATA); | |
ebeb4665 | 334 | break; |
7a1c0b79 | 335 | case BSTAT_MSG | BSTAT_CMD | BSTAT_IO: /* MESSAGE IN */ |
1697c6a6 | 336 | cmd->SCp.Message = inb(fd->base + REG_SCSI_DATA); |
b2e88c97 | 337 | if (cmd->SCp.Message == COMMAND_COMPLETE) |
ebeb4665 OZ |
338 | ++done; |
339 | break; | |
340 | } | |
341 | } | |
342 | ||
343 | if (fd->chip == tmc1800 && !cmd->SCp.have_data_in && | |
344 | cmd->SCp.sent_command >= cmd->cmd_len) { | |
345 | if (cmd->sc_data_direction == DMA_TO_DEVICE) { | |
346 | cmd->SCp.have_data_in = -1; | |
1697c6a6 OZ |
347 | outb(ACTL_IRQEN | ACTL_FIFOWR | ACTL_FIFOEN | |
348 | PARITY_MASK, fd->base + REG_ACTL); | |
ebeb4665 OZ |
349 | } else { |
350 | cmd->SCp.have_data_in = 1; | |
1697c6a6 OZ |
351 | outb(ACTL_IRQEN | ACTL_FIFOEN | PARITY_MASK, |
352 | fd->base + REG_ACTL); | |
ebeb4665 OZ |
353 | } |
354 | } | |
355 | ||
356 | if (cmd->SCp.have_data_in == -1) /* DATA OUT */ | |
357 | fdomain_write_data(cmd); | |
358 | ||
359 | if (cmd->SCp.have_data_in == 1) /* DATA IN */ | |
360 | fdomain_read_data(cmd); | |
361 | ||
362 | if (done) { | |
b2e88c97 | 363 | set_status_byte(cmd, cmd->SCp.Status); |
b2e88c97 | 364 | set_host_byte(cmd, DID_OK); |
0ee44f90 | 365 | scsi_msg_to_host_byte(cmd, cmd->SCp.Message); |
b2e88c97 | 366 | fdomain_finish_cmd(fd); |
ebeb4665 OZ |
367 | } else { |
368 | if (cmd->SCp.phase & disconnect) { | |
1697c6a6 OZ |
369 | outb(ICTL_FIFO | ICTL_SEL | ICTL_REQ | FIFO_COUNT, |
370 | fd->base + REG_ICTL); | |
371 | outb(0, fd->base + REG_BCTL); | |
ebeb4665 | 372 | } else |
1697c6a6 OZ |
373 | outb(ICTL_FIFO | ICTL_REQ | FIFO_COUNT, |
374 | fd->base + REG_ICTL); | |
ebeb4665 OZ |
375 | } |
376 | out: | |
377 | spin_unlock_irqrestore(sh->host_lock, flags); | |
378 | } | |
379 | ||
380 | static irqreturn_t fdomain_irq(int irq, void *dev_id) | |
381 | { | |
382 | struct fdomain *fd = dev_id; | |
383 | ||
384 | /* Is it our IRQ? */ | |
1697c6a6 | 385 | if ((inb(fd->base + REG_ASTAT) & ASTAT_IRQ) == 0) |
ebeb4665 OZ |
386 | return IRQ_NONE; |
387 | ||
1697c6a6 | 388 | outb(0, fd->base + REG_ICTL); |
ebeb4665 OZ |
389 | |
390 | /* We usually have one spurious interrupt after each command. */ | |
391 | if (!fd->cur_cmd) /* Spurious interrupt */ | |
392 | return IRQ_NONE; | |
393 | ||
394 | schedule_work(&fd->work); | |
395 | ||
396 | return IRQ_HANDLED; | |
397 | } | |
398 | ||
399 | static int fdomain_queue(struct Scsi_Host *sh, struct scsi_cmnd *cmd) | |
400 | { | |
401 | struct fdomain *fd = shost_priv(cmd->device->host); | |
402 | unsigned long flags; | |
403 | ||
404 | cmd->SCp.Status = 0; | |
405 | cmd->SCp.Message = 0; | |
406 | cmd->SCp.have_data_in = 0; | |
407 | cmd->SCp.sent_command = 0; | |
408 | cmd->SCp.phase = in_arbitration; | |
409 | scsi_set_resid(cmd, scsi_bufflen(cmd)); | |
410 | ||
411 | spin_lock_irqsave(sh->host_lock, flags); | |
412 | ||
413 | fd->cur_cmd = cmd; | |
414 | ||
415 | fdomain_make_bus_idle(fd); | |
416 | ||
417 | /* Start arbitration */ | |
1697c6a6 OZ |
418 | outb(0, fd->base + REG_ICTL); |
419 | outb(0, fd->base + REG_BCTL); /* Disable data drivers */ | |
420 | /* Set our id bit */ | |
421 | outb(BIT(cmd->device->host->this_id), fd->base + REG_SCSI_DATA_NOACK); | |
422 | outb(ICTL_ARB, fd->base + REG_ICTL); | |
423 | /* Start arbitration */ | |
424 | outb(ACTL_ARB | ACTL_IRQEN | PARITY_MASK, fd->base + REG_ACTL); | |
ebeb4665 OZ |
425 | |
426 | spin_unlock_irqrestore(sh->host_lock, flags); | |
427 | ||
428 | return 0; | |
429 | } | |
430 | ||
431 | static int fdomain_abort(struct scsi_cmnd *cmd) | |
432 | { | |
433 | struct Scsi_Host *sh = cmd->device->host; | |
434 | struct fdomain *fd = shost_priv(sh); | |
435 | unsigned long flags; | |
436 | ||
437 | if (!fd->cur_cmd) | |
438 | return FAILED; | |
439 | ||
440 | spin_lock_irqsave(sh->host_lock, flags); | |
441 | ||
442 | fdomain_make_bus_idle(fd); | |
443 | fd->cur_cmd->SCp.phase |= aborted; | |
ebeb4665 OZ |
444 | |
445 | /* Aborts are not done well. . . */ | |
b2e88c97 HR |
446 | set_host_byte(fd->cur_cmd, DID_ABORT); |
447 | fdomain_finish_cmd(fd); | |
ebeb4665 OZ |
448 | spin_unlock_irqrestore(sh->host_lock, flags); |
449 | return SUCCESS; | |
450 | } | |
451 | ||
452 | static int fdomain_host_reset(struct scsi_cmnd *cmd) | |
453 | { | |
454 | struct Scsi_Host *sh = cmd->device->host; | |
455 | struct fdomain *fd = shost_priv(sh); | |
456 | unsigned long flags; | |
457 | ||
458 | spin_lock_irqsave(sh->host_lock, flags); | |
459 | fdomain_reset(fd->base); | |
460 | spin_unlock_irqrestore(sh->host_lock, flags); | |
461 | return SUCCESS; | |
462 | } | |
463 | ||
464 | static int fdomain_biosparam(struct scsi_device *sdev, | |
465 | struct block_device *bdev, sector_t capacity, | |
466 | int geom[]) | |
467 | { | |
468 | unsigned char *p = scsi_bios_ptable(bdev); | |
469 | ||
470 | if (p && p[65] == 0xaa && p[64] == 0x55 /* Partition table valid */ | |
471 | && p[4]) { /* Partition type */ | |
472 | geom[0] = p[5] + 1; /* heads */ | |
473 | geom[1] = p[6] & 0x3f; /* sectors */ | |
474 | } else { | |
475 | if (capacity >= 0x7e0000) { | |
476 | geom[0] = 255; /* heads */ | |
477 | geom[1] = 63; /* sectors */ | |
478 | } else if (capacity >= 0x200000) { | |
479 | geom[0] = 128; /* heads */ | |
480 | geom[1] = 63; /* sectors */ | |
481 | } else { | |
482 | geom[0] = 64; /* heads */ | |
483 | geom[1] = 32; /* sectors */ | |
484 | } | |
485 | } | |
486 | geom[2] = sector_div(capacity, geom[0] * geom[1]); | |
487 | kfree(p); | |
488 | ||
489 | return 0; | |
490 | } | |
491 | ||
492 | static struct scsi_host_template fdomain_template = { | |
493 | .module = THIS_MODULE, | |
494 | .name = "Future Domain TMC-16x0", | |
495 | .proc_name = "fdomain", | |
496 | .queuecommand = fdomain_queue, | |
497 | .eh_abort_handler = fdomain_abort, | |
498 | .eh_host_reset_handler = fdomain_host_reset, | |
499 | .bios_param = fdomain_biosparam, | |
500 | .can_queue = 1, | |
501 | .this_id = 7, | |
502 | .sg_tablesize = 64, | |
503 | .dma_boundary = PAGE_SIZE - 1, | |
504 | }; | |
505 | ||
506 | struct Scsi_Host *fdomain_create(int base, int irq, int this_id, | |
507 | struct device *dev) | |
508 | { | |
509 | struct Scsi_Host *sh; | |
510 | struct fdomain *fd; | |
511 | enum chip_type chip; | |
512 | static const char * const chip_names[] = { | |
513 | "Unknown", "TMC-1800", "TMC-18C50", "TMC-18C30" | |
514 | }; | |
8674a8aa | 515 | unsigned long irq_flags = 0; |
ebeb4665 OZ |
516 | |
517 | chip = fdomain_identify(base); | |
518 | if (!chip) | |
519 | return NULL; | |
520 | ||
521 | fdomain_reset(base); | |
522 | ||
523 | if (fdomain_test_loopback(base)) | |
524 | return NULL; | |
525 | ||
526 | if (!irq) { | |
527 | dev_err(dev, "card has no IRQ assigned"); | |
528 | return NULL; | |
529 | } | |
530 | ||
531 | sh = scsi_host_alloc(&fdomain_template, sizeof(struct fdomain)); | |
532 | if (!sh) | |
533 | return NULL; | |
534 | ||
535 | if (this_id) | |
536 | sh->this_id = this_id & 0x07; | |
537 | ||
538 | sh->irq = irq; | |
539 | sh->io_port = base; | |
540 | sh->n_io_port = FDOMAIN_REGION_SIZE; | |
541 | ||
542 | fd = shost_priv(sh); | |
543 | fd->base = base; | |
544 | fd->chip = chip; | |
545 | INIT_WORK(&fd->work, fdomain_work); | |
546 | ||
8674a8aa OZ |
547 | if (dev_is_pci(dev) || !strcmp(dev->bus->name, "pcmcia")) |
548 | irq_flags = IRQF_SHARED; | |
549 | ||
550 | if (request_irq(irq, fdomain_irq, irq_flags, "fdomain", fd)) | |
ebeb4665 OZ |
551 | goto fail_put; |
552 | ||
553 | shost_printk(KERN_INFO, sh, "%s chip at 0x%x irq %d SCSI ID %d\n", | |
554 | dev_is_pci(dev) ? "TMC-36C70 (PCI bus)" : chip_names[chip], | |
555 | base, irq, sh->this_id); | |
556 | ||
557 | if (scsi_add_host(sh, dev)) | |
558 | goto fail_free_irq; | |
559 | ||
560 | scsi_scan_host(sh); | |
561 | ||
562 | return sh; | |
563 | ||
564 | fail_free_irq: | |
565 | free_irq(irq, fd); | |
566 | fail_put: | |
567 | scsi_host_put(sh); | |
568 | return NULL; | |
569 | } | |
570 | EXPORT_SYMBOL_GPL(fdomain_create); | |
571 | ||
572 | int fdomain_destroy(struct Scsi_Host *sh) | |
573 | { | |
574 | struct fdomain *fd = shost_priv(sh); | |
575 | ||
576 | cancel_work_sync(&fd->work); | |
577 | scsi_remove_host(sh); | |
578 | if (sh->irq) | |
579 | free_irq(sh->irq, fd); | |
580 | scsi_host_put(sh); | |
581 | return 0; | |
582 | } | |
583 | EXPORT_SYMBOL_GPL(fdomain_destroy); | |
584 | ||
585 | #ifdef CONFIG_PM_SLEEP | |
586 | static int fdomain_resume(struct device *dev) | |
587 | { | |
588 | struct fdomain *fd = shost_priv(dev_get_drvdata(dev)); | |
589 | ||
590 | fdomain_reset(fd->base); | |
591 | return 0; | |
592 | } | |
593 | ||
594 | static SIMPLE_DEV_PM_OPS(fdomain_pm_ops, NULL, fdomain_resume); | |
595 | #endif /* CONFIG_PM_SLEEP */ | |
596 | ||
597 | MODULE_AUTHOR("Ondrej Zary, Rickard E. Faith"); | |
598 | MODULE_DESCRIPTION("Future Domain TMC-16x0/TMC-3260 SCSI driver"); | |
599 | MODULE_LICENSE("GPL"); |