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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 | ||
211134c4 BVA |
118 | static struct scsi_pointer *fdomain_scsi_pointer(struct scsi_cmnd *cmd) |
119 | { | |
120 | return scsi_cmd_priv(cmd); | |
121 | } | |
122 | ||
ebeb4665 OZ |
123 | static inline void fdomain_make_bus_idle(struct fdomain *fd) |
124 | { | |
1697c6a6 OZ |
125 | outb(0, fd->base + REG_BCTL); |
126 | outb(0, fd->base + REG_MCTL); | |
ebeb4665 OZ |
127 | if (fd->chip == tmc18c50 || fd->chip == tmc18c30) |
128 | /* Clear forced intr. */ | |
1697c6a6 OZ |
129 | outb(ACTL_RESET | ACTL_CLRFIRQ | PARITY_MASK, |
130 | fd->base + REG_ACTL); | |
ebeb4665 | 131 | else |
1697c6a6 | 132 | outb(ACTL_RESET | PARITY_MASK, fd->base + REG_ACTL); |
ebeb4665 OZ |
133 | } |
134 | ||
135 | static enum chip_type fdomain_identify(int port) | |
136 | { | |
1697c6a6 | 137 | u16 id = inb(port + REG_ID_LSB) | inb(port + REG_ID_MSB) << 8; |
ebeb4665 OZ |
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. */ | |
1697c6a6 OZ |
149 | outb(CFG2_32BIT, port + REG_CFG2); |
150 | if ((inb(port + REG_CFG2) & CFG2_32BIT)) { | |
151 | outb(0, port + REG_CFG2); | |
152 | if ((inb(port + REG_CFG2) & CFG2_32BIT) == 0) | |
ebeb4665 OZ |
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++) { | |
1697c6a6 OZ |
164 | outb(i, base + REG_LOOPBACK); |
165 | if (inb(base + REG_LOOPBACK) != i) | |
ebeb4665 OZ |
166 | return 1; |
167 | } | |
168 | ||
169 | return 0; | |
170 | } | |
171 | ||
172 | static void fdomain_reset(int base) | |
173 | { | |
a9651be7 | 174 | outb(BCTL_RST, base + REG_BCTL); |
ebeb4665 | 175 | mdelay(20); |
1697c6a6 | 176 | outb(0, base + REG_BCTL); |
ebeb4665 | 177 | mdelay(1150); |
1697c6a6 OZ |
178 | outb(0, base + REG_MCTL); |
179 | outb(PARITY_MASK, base + REG_ACTL); | |
ebeb4665 OZ |
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(sh); | |
187 | ||
1697c6a6 OZ |
188 | outb(BCTL_BUSEN | BCTL_SEL, fd->base + REG_BCTL); |
189 | outb(BIT(sh->this_id) | BIT(target), fd->base + REG_SCSI_DATA_NOACK); | |
ebeb4665 OZ |
190 | |
191 | /* Stop arbitration and enable parity */ | |
1697c6a6 | 192 | outb(PARITY_MASK, fd->base + REG_ACTL); |
ebeb4665 OZ |
193 | |
194 | timeout = 350; /* 350 msec */ | |
195 | ||
196 | do { | |
1697c6a6 OZ |
197 | status = inb(fd->base + REG_BSTAT); |
198 | if (status & BSTAT_BSY) { | |
ebeb4665 OZ |
199 | /* Enable SCSI Bus */ |
200 | /* (on error, should make bus idle with 0) */ | |
1697c6a6 | 201 | outb(BCTL_BUSEN, fd->base + REG_BCTL); |
ebeb4665 OZ |
202 | return 0; |
203 | } | |
204 | mdelay(1); | |
205 | } while (--timeout); | |
206 | fdomain_make_bus_idle(fd); | |
207 | return 1; | |
208 | } | |
209 | ||
b2e88c97 | 210 | static void fdomain_finish_cmd(struct fdomain *fd) |
ebeb4665 | 211 | { |
1697c6a6 | 212 | outb(0, fd->base + REG_ICTL); |
ebeb4665 | 213 | fdomain_make_bus_idle(fd); |
a0c22474 | 214 | scsi_done(fd->cur_cmd); |
ebeb4665 OZ |
215 | fd->cur_cmd = NULL; |
216 | } | |
217 | ||
218 | static void fdomain_read_data(struct scsi_cmnd *cmd) | |
219 | { | |
220 | struct fdomain *fd = shost_priv(cmd->device->host); | |
221 | unsigned char *virt, *ptr; | |
222 | size_t offset, len; | |
223 | ||
1697c6a6 | 224 | while ((len = inw(fd->base + REG_FIFO_COUNT)) > 0) { |
ebeb4665 OZ |
225 | offset = scsi_bufflen(cmd) - scsi_get_resid(cmd); |
226 | virt = scsi_kmap_atomic_sg(scsi_sglist(cmd), scsi_sg_count(cmd), | |
227 | &offset, &len); | |
228 | ptr = virt + offset; | |
229 | if (len & 1) | |
1697c6a6 | 230 | *ptr++ = inb(fd->base + REG_FIFO); |
ebeb4665 | 231 | if (len > 1) |
1697c6a6 | 232 | insw(fd->base + REG_FIFO, ptr, len >> 1); |
ebeb4665 OZ |
233 | scsi_set_resid(cmd, 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(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 | ||
1697c6a6 | 246 | while ((len = FIFO_Size - inw(fd->base + REG_FIFO_COUNT)) > 512) { |
ebeb4665 OZ |
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(scsi_sglist(cmd), scsi_sg_count(cmd), | |
254 | &offset, &len); | |
255 | ptr = virt + offset; | |
256 | if (len & 1) | |
1697c6a6 | 257 | outb(*ptr++, fd->base + REG_FIFO); |
ebeb4665 | 258 | if (len > 1) |
1697c6a6 | 259 | outsw(fd->base + REG_FIFO, ptr, len >> 1); |
ebeb4665 OZ |
260 | scsi_set_resid(cmd, 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; | |
211134c4 | 271 | struct scsi_pointer *scsi_pointer = fdomain_scsi_pointer(cmd); |
ebeb4665 OZ |
272 | unsigned long flags; |
273 | int status; | |
274 | int done = 0; | |
275 | ||
276 | spin_lock_irqsave(sh->host_lock, flags); | |
277 | ||
211134c4 | 278 | if (scsi_pointer->phase & in_arbitration) { |
1697c6a6 OZ |
279 | status = inb(fd->base + REG_ASTAT); |
280 | if (!(status & ASTAT_ARB)) { | |
b2e88c97 HR |
281 | set_host_byte(cmd, DID_BUS_BUSY); |
282 | fdomain_finish_cmd(fd); | |
ebeb4665 OZ |
283 | goto out; |
284 | } | |
211134c4 | 285 | scsi_pointer->phase = in_selection; |
ebeb4665 | 286 | |
1697c6a6 OZ |
287 | outb(ICTL_SEL | FIFO_COUNT, fd->base + REG_ICTL); |
288 | outb(BCTL_BUSEN | BCTL_SEL, fd->base + REG_BCTL); | |
289 | outb(BIT(cmd->device->host->this_id) | BIT(scmd_id(cmd)), | |
290 | fd->base + REG_SCSI_DATA_NOACK); | |
ebeb4665 | 291 | /* Stop arbitration and enable parity */ |
1697c6a6 | 292 | outb(ACTL_IRQEN | PARITY_MASK, fd->base + REG_ACTL); |
ebeb4665 | 293 | goto out; |
211134c4 | 294 | } else if (scsi_pointer->phase & in_selection) { |
1697c6a6 OZ |
295 | status = inb(fd->base + REG_BSTAT); |
296 | if (!(status & BSTAT_BSY)) { | |
ebeb4665 OZ |
297 | /* Try again, for slow devices */ |
298 | if (fdomain_select(cmd->device->host, scmd_id(cmd))) { | |
b2e88c97 HR |
299 | set_host_byte(cmd, DID_NO_CONNECT); |
300 | fdomain_finish_cmd(fd); | |
ebeb4665 OZ |
301 | goto out; |
302 | } | |
303 | /* Stop arbitration and enable parity */ | |
1697c6a6 | 304 | outb(ACTL_IRQEN | PARITY_MASK, fd->base + REG_ACTL); |
ebeb4665 | 305 | } |
211134c4 | 306 | scsi_pointer->phase = in_other; |
1697c6a6 OZ |
307 | outb(ICTL_FIFO | ICTL_REQ | FIFO_COUNT, fd->base + REG_ICTL); |
308 | outb(BCTL_BUSEN, fd->base + REG_BCTL); | |
ebeb4665 OZ |
309 | goto out; |
310 | } | |
311 | ||
211134c4 | 312 | /* fdomain_scsi_pointer(cur_cmd)->phase == in_other: this is the body of the routine */ |
1697c6a6 | 313 | status = inb(fd->base + REG_BSTAT); |
ebeb4665 | 314 | |
1697c6a6 | 315 | if (status & BSTAT_REQ) { |
7a1c0b79 | 316 | switch (status & (BSTAT_MSG | BSTAT_CMD | BSTAT_IO)) { |
1697c6a6 | 317 | case BSTAT_CMD: /* COMMAND OUT */ |
211134c4 | 318 | outb(cmd->cmnd[scsi_pointer->sent_command++], |
1697c6a6 | 319 | fd->base + REG_SCSI_DATA); |
ebeb4665 | 320 | break; |
1697c6a6 | 321 | case 0: /* DATA OUT -- tmc18c50/tmc18c30 only */ |
211134c4 BVA |
322 | if (fd->chip != tmc1800 && !scsi_pointer->have_data_in) { |
323 | scsi_pointer->have_data_in = -1; | |
1697c6a6 OZ |
324 | outb(ACTL_IRQEN | ACTL_FIFOWR | ACTL_FIFOEN | |
325 | PARITY_MASK, fd->base + REG_ACTL); | |
ebeb4665 OZ |
326 | } |
327 | break; | |
1697c6a6 | 328 | case BSTAT_IO: /* DATA IN -- tmc18c50/tmc18c30 only */ |
211134c4 BVA |
329 | if (fd->chip != tmc1800 && !scsi_pointer->have_data_in) { |
330 | scsi_pointer->have_data_in = 1; | |
1697c6a6 OZ |
331 | outb(ACTL_IRQEN | ACTL_FIFOEN | PARITY_MASK, |
332 | fd->base + REG_ACTL); | |
ebeb4665 OZ |
333 | } |
334 | break; | |
1697c6a6 | 335 | case BSTAT_CMD | BSTAT_IO: /* STATUS IN */ |
211134c4 | 336 | scsi_pointer->Status = inb(fd->base + REG_SCSI_DATA); |
ebeb4665 | 337 | break; |
1697c6a6 OZ |
338 | case BSTAT_MSG | BSTAT_CMD: /* MESSAGE OUT */ |
339 | outb(MESSAGE_REJECT, fd->base + REG_SCSI_DATA); | |
ebeb4665 | 340 | break; |
7a1c0b79 | 341 | case BSTAT_MSG | BSTAT_CMD | BSTAT_IO: /* MESSAGE IN */ |
211134c4 BVA |
342 | scsi_pointer->Message = inb(fd->base + REG_SCSI_DATA); |
343 | if (scsi_pointer->Message == COMMAND_COMPLETE) | |
ebeb4665 OZ |
344 | ++done; |
345 | break; | |
346 | } | |
347 | } | |
348 | ||
211134c4 BVA |
349 | if (fd->chip == tmc1800 && !scsi_pointer->have_data_in && |
350 | scsi_pointer->sent_command >= cmd->cmd_len) { | |
ebeb4665 | 351 | if (cmd->sc_data_direction == DMA_TO_DEVICE) { |
211134c4 | 352 | scsi_pointer->have_data_in = -1; |
1697c6a6 OZ |
353 | outb(ACTL_IRQEN | ACTL_FIFOWR | ACTL_FIFOEN | |
354 | PARITY_MASK, fd->base + REG_ACTL); | |
ebeb4665 | 355 | } else { |
211134c4 | 356 | scsi_pointer->have_data_in = 1; |
1697c6a6 OZ |
357 | outb(ACTL_IRQEN | ACTL_FIFOEN | PARITY_MASK, |
358 | fd->base + REG_ACTL); | |
ebeb4665 OZ |
359 | } |
360 | } | |
361 | ||
211134c4 | 362 | if (scsi_pointer->have_data_in == -1) /* DATA OUT */ |
ebeb4665 OZ |
363 | fdomain_write_data(cmd); |
364 | ||
211134c4 | 365 | if (scsi_pointer->have_data_in == 1) /* DATA IN */ |
ebeb4665 OZ |
366 | fdomain_read_data(cmd); |
367 | ||
368 | if (done) { | |
211134c4 | 369 | set_status_byte(cmd, scsi_pointer->Status); |
b2e88c97 | 370 | set_host_byte(cmd, DID_OK); |
211134c4 | 371 | scsi_msg_to_host_byte(cmd, scsi_pointer->Message); |
b2e88c97 | 372 | fdomain_finish_cmd(fd); |
ebeb4665 | 373 | } else { |
211134c4 | 374 | if (scsi_pointer->phase & disconnect) { |
1697c6a6 OZ |
375 | outb(ICTL_FIFO | ICTL_SEL | ICTL_REQ | FIFO_COUNT, |
376 | fd->base + REG_ICTL); | |
377 | outb(0, fd->base + REG_BCTL); | |
ebeb4665 | 378 | } else |
1697c6a6 OZ |
379 | outb(ICTL_FIFO | ICTL_REQ | FIFO_COUNT, |
380 | fd->base + REG_ICTL); | |
ebeb4665 OZ |
381 | } |
382 | out: | |
383 | spin_unlock_irqrestore(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? */ | |
1697c6a6 | 391 | if ((inb(fd->base + REG_ASTAT) & ASTAT_IRQ) == 0) |
ebeb4665 OZ |
392 | return IRQ_NONE; |
393 | ||
1697c6a6 | 394 | outb(0, fd->base + REG_ICTL); |
ebeb4665 OZ |
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(&fd->work); | |
401 | ||
402 | return IRQ_HANDLED; | |
403 | } | |
404 | ||
405 | static int fdomain_queue(struct Scsi_Host *sh, struct scsi_cmnd *cmd) | |
406 | { | |
211134c4 | 407 | struct scsi_pointer *scsi_pointer = fdomain_scsi_pointer(cmd); |
ebeb4665 OZ |
408 | struct fdomain *fd = shost_priv(cmd->device->host); |
409 | unsigned long flags; | |
410 | ||
211134c4 BVA |
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; | |
ebeb4665 OZ |
416 | scsi_set_resid(cmd, 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 */ | |
1697c6a6 OZ |
425 | outb(0, fd->base + REG_ICTL); |
426 | outb(0, fd->base + REG_BCTL); /* Disable data drivers */ | |
427 | /* Set our id bit */ | |
428 | outb(BIT(cmd->device->host->this_id), fd->base + REG_SCSI_DATA_NOACK); | |
429 | outb(ICTL_ARB, fd->base + REG_ICTL); | |
430 | /* Start arbitration */ | |
431 | outb(ACTL_ARB | ACTL_IRQEN | PARITY_MASK, fd->base + REG_ACTL); | |
ebeb4665 OZ |
432 | |
433 | spin_unlock_irqrestore(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(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); | |
211134c4 | 450 | fdomain_scsi_pointer(fd->cur_cmd)->phase |= aborted; |
ebeb4665 OZ |
451 | |
452 | /* Aborts are not done well. . . */ | |
b2e88c97 HR |
453 | set_host_byte(fd->cur_cmd, DID_ABORT); |
454 | fdomain_finish_cmd(fd); | |
ebeb4665 OZ |
455 | spin_unlock_irqrestore(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(sh); | |
463 | unsigned long flags; | |
464 | ||
465 | spin_lock_irqsave(sh->host_lock, flags); | |
466 | fdomain_reset(fd->base); | |
467 | spin_unlock_irqrestore(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(p); | |
495 | ||
496 | return 0; | |
497 | } | |
498 | ||
8e6a87aa | 499 | static const struct scsi_host_template fdomain_template = { |
ebeb4665 OZ |
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, | |
211134c4 | 511 | .cmd_size = sizeof(struct scsi_pointer), |
ebeb4665 OZ |
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 | }; | |
8674a8aa | 523 | unsigned long irq_flags = 0; |
ebeb4665 OZ |
524 | |
525 | chip = fdomain_identify(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(sh); | |
551 | fd->base = base; | |
552 | fd->chip = chip; | |
553 | INIT_WORK(&fd->work, fdomain_work); | |
554 | ||
8674a8aa OZ |
555 | if (dev_is_pci(dev) || !strcmp(dev->bus->name, "pcmcia")) |
556 | irq_flags = IRQF_SHARED; | |
557 | ||
558 | if (request_irq(irq, fdomain_irq, irq_flags, "fdomain", fd)) | |
ebeb4665 OZ |
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(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(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(sh); | |
583 | ||
584 | cancel_work_sync(&fd->work); | |
585 | scsi_remove_host(sh); | |
586 | if (sh->irq) | |
587 | free_irq(sh->irq, fd); | |
588 | scsi_host_put(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(dev_get_drvdata(dev)); | |
597 | ||
598 | fdomain_reset(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"); |