File: | dev/atapiscsi/atapiscsi.c |
Warning: | line 974, column 7 Although the value stored to 'message' is used in the enclosing expression, the value is never actually read from 'message' |
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1 | /* $OpenBSD: atapiscsi.c,v 1.118 2022/01/09 05:42:37 jsg Exp $ */ |
2 | |
3 | /* |
4 | * This code is derived from code with the copyright below. |
5 | */ |
6 | |
7 | /* |
8 | * Copyright (c) 1996, 1998 Manuel Bouyer. |
9 | * |
10 | * Redistribution and use in source and binary forms, with or without |
11 | * modification, are permitted provided that the following conditions |
12 | * are met: |
13 | * 1. Redistributions of source code must retain the above copyright |
14 | * notice, this list of conditions and the following disclaimer. |
15 | * 2. Redistributions in binary form must reproduce the above copyright |
16 | * notice, this list of conditions and the following disclaimer in the |
17 | * documentation and/or other materials provided with the distribution. |
18 | * |
19 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
20 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
21 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
22 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
23 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
24 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
25 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
26 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
27 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
28 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
29 | * SUCH DAMAGE. |
30 | * |
31 | */ |
32 | |
33 | |
34 | #include <sys/param.h> |
35 | #include <sys/systm.h> |
36 | #include <sys/kernel.h> |
37 | #include <sys/device.h> |
38 | #include <sys/buf.h> |
39 | #include <sys/disklabel.h> |
40 | #include <sys/malloc.h> |
41 | #include <sys/reboot.h> |
42 | #include <sys/ioctl.h> |
43 | #include <sys/timeout.h> |
44 | #include <scsi/scsi_all.h> |
45 | #include <scsi/scsi_disk.h> |
46 | #include <scsi/scsi_tape.h> |
47 | #include <scsi/scsiconf.h> |
48 | |
49 | #include <machine/bus.h> |
50 | #include <machine/cpu.h> |
51 | #include <machine/intr.h> |
52 | |
53 | #include <dev/ata/atareg.h> |
54 | #include <dev/ata/atavar.h> |
55 | #include <dev/ic/wdcreg.h> |
56 | #include <dev/ic/wdcvar.h> |
57 | #include <dev/ic/wdcevent.h> |
58 | |
59 | /* drive states stored in ata_drive_datas */ |
60 | enum atapi_drive_states { |
61 | ATAPI_RESET_BASE_STATE = 0, |
62 | ATAPI_DEVICE_RESET_WAIT_STATE = 1, |
63 | ATAPI_IDENTIFY_STATE = 2, |
64 | ATAPI_IDENTIFY_WAIT_STATE = 3, |
65 | ATAPI_PIOMODE_STATE = 4, |
66 | ATAPI_PIOMODE_WAIT_STATE = 5, |
67 | ATAPI_DMAMODE_STATE = 6, |
68 | ATAPI_DMAMODE_WAIT_STATE = 7, |
69 | ATAPI_READY_STATE = 8 |
70 | }; |
71 | |
72 | #define DEBUG_INTR0x01 0x01 |
73 | #define DEBUG_XFERS0x02 0x02 |
74 | #define DEBUG_STATUS0x04 0x04 |
75 | #define DEBUG_FUNCS0x08 0x08 |
76 | #define DEBUG_PROBE0x10 0x10 |
77 | #define DEBUG_DSC0x20 0x20 |
78 | #define DEBUG_POLL0x40 0x40 |
79 | #define DEBUG_ERRORS0x80 0x80 /* Debug error handling code */ |
80 | |
81 | #if defined(WDCDEBUG) |
82 | #ifndef WDCDEBUG_ATAPI_MASK |
83 | #define WDCDEBUG_ATAPI_MASK 0x00 |
84 | #endif |
85 | int wdcdebug_atapi_mask = WDCDEBUG_ATAPI_MASK; |
86 | #define WDCDEBUG_PRINT(args, level) do { \ |
87 | if ((wdcdebug_atapi_mask & (level)) != 0) \ |
88 | printf args; \ |
89 | } while (0) |
90 | #else |
91 | #define WDCDEBUG_PRINT(args, level) |
92 | #endif |
93 | |
94 | /* 10 ms, this is used only before sending a cmd. */ |
95 | #define ATAPI_DELAY10 10 |
96 | #define ATAPI_RESET_DELAY1000 1000 |
97 | #define ATAPI_RESET_WAIT2000 2000 |
98 | #define ATAPI_CTRL_WAIT4000 4000 |
99 | |
100 | /* When polling, let the exponential backoff max out at 1 second's interval. */ |
101 | #define ATAPI_POLL_MAXTIC(hz) (hz) |
102 | |
103 | void wdc_atapi_start(struct channel_softc *,struct wdc_xfer *); |
104 | |
105 | void wdc_atapi_timer_handler(void *); |
106 | |
107 | void wdc_atapi_real_start(struct channel_softc *, struct wdc_xfer *, |
108 | int, struct atapi_return_args *); |
109 | void wdc_atapi_real_start_2(struct channel_softc *, struct wdc_xfer *, |
110 | int, struct atapi_return_args *); |
111 | void wdc_atapi_intr_command(struct channel_softc *, struct wdc_xfer *, |
112 | int, struct atapi_return_args *); |
113 | void wdc_atapi_intr_data(struct channel_softc *, struct wdc_xfer *, |
114 | int, struct atapi_return_args *); |
115 | void wdc_atapi_intr_complete(struct channel_softc *, struct wdc_xfer *, |
116 | int, struct atapi_return_args *); |
117 | void wdc_atapi_pio_intr(struct channel_softc *, struct wdc_xfer *, |
118 | int, struct atapi_return_args *); |
119 | void wdc_atapi_send_packet(struct channel_softc *, struct wdc_xfer *, |
120 | int, struct atapi_return_args *); |
121 | void wdc_atapi_ctrl(struct channel_softc *, struct wdc_xfer *, |
122 | int, struct atapi_return_args *); |
123 | |
124 | char *wdc_atapi_in_data_phase(struct wdc_xfer *, int, int); |
125 | |
126 | int wdc_atapi_intr(struct channel_softc *, struct wdc_xfer *, int); |
127 | void wdc_atapi_done(struct channel_softc *, struct wdc_xfer *, |
128 | int, struct atapi_return_args *); |
129 | void wdc_atapi_reset(struct channel_softc *, struct wdc_xfer *, |
130 | int, struct atapi_return_args *); |
131 | void wdc_atapi_reset_2(struct channel_softc *, struct wdc_xfer *, |
132 | int, struct atapi_return_args *); |
133 | |
134 | void wdc_atapi_tape_done(struct channel_softc *, struct wdc_xfer *, |
135 | int, struct atapi_return_args *); |
136 | |
137 | struct atapiscsi_softc; |
138 | struct atapiscsi_xfer; |
139 | |
140 | int atapiscsi_match(struct device *, void *, void *); |
141 | void atapiscsi_attach(struct device *, struct device *, void *); |
142 | int atapiscsi_activate(struct device *, int); |
143 | int atapiscsi_detach(struct device *, int); |
144 | int atapi_to_scsi_sense(struct scsi_xfer *, u_int8_t); |
145 | |
146 | enum atapi_state { as_none, as_data, as_completed }; |
147 | |
148 | struct atapiscsi_softc { |
149 | struct device sc_dev; |
150 | struct channel_softc *chp; |
151 | enum atapi_state protocol_phase; |
152 | |
153 | int drive; |
154 | }; |
155 | |
156 | int wdc_atapi_ioctl(struct scsi_link *, u_long, caddr_t, int); |
157 | void wdc_atapi_send_cmd(struct scsi_xfer *sc_xfer); |
158 | |
159 | static struct scsi_adapter atapiscsi_switch = { |
160 | wdc_atapi_send_cmd, NULL((void *)0), NULL((void *)0), NULL((void *)0), wdc_atapi_ioctl |
161 | }; |
162 | |
163 | /* Initial version shares bus_link structure so it can easily |
164 | be "attached to current" wdc driver */ |
165 | |
166 | struct cfattach atapiscsi_ca = { |
167 | sizeof(struct atapiscsi_softc), atapiscsi_match, atapiscsi_attach, |
168 | atapiscsi_detach, atapiscsi_activate |
169 | }; |
170 | |
171 | struct cfdriver atapiscsi_cd = { |
172 | NULL((void *)0), "atapiscsi", DV_DULL |
173 | }; |
174 | |
175 | |
176 | int |
177 | atapiscsi_match(struct device *parent, void *match, void *aux) |
178 | { |
179 | struct ata_atapi_attach *aa_link = aux; |
180 | struct cfdata *cf = match; |
181 | |
182 | if (aa_link == NULL((void *)0)) |
183 | return (0); |
184 | |
185 | if (aa_link->aa_type != T_ATAPI1) |
186 | return (0); |
187 | |
188 | if (cf->cf_loc[0] != aa_link->aa_channel && |
189 | cf->cf_loc[0] != -1) |
190 | return (0); |
191 | |
192 | return (1); |
193 | } |
194 | |
195 | void |
196 | atapiscsi_attach(struct device *parent, struct device *self, void *aux) |
197 | { |
198 | struct atapiscsi_softc *as = (struct atapiscsi_softc *)self; |
199 | struct ata_atapi_attach *aa_link = aux; |
200 | struct scsibus_attach_args saa; |
201 | struct ata_drive_datas *drvp = aa_link->aa_drv_data; |
202 | struct channel_softc *chp = drvp->chnl_softc; |
203 | struct ataparams *id = &drvp->id; |
204 | struct device *child; |
205 | |
206 | extern struct scsi_iopool wdc_xfer_iopool; |
207 | |
208 | printf("\n"); |
209 | |
210 | /* Initialize shared data. */ |
211 | scsi_init(); |
212 | |
213 | #ifdef WDCDEBUG |
214 | if (chp->wdc->sc_dev.dv_cfdata->cf_flags & WDC_OPTION_PROBE_VERBOSE0x10000) |
215 | wdcdebug_atapi_mask |= DEBUG_PROBE0x10; |
216 | #endif |
217 | |
218 | as->chp = chp; |
219 | as->drive = drvp->drive; |
220 | |
221 | strlcpy(drvp->drive_name, as->sc_dev.dv_xname, |
222 | sizeof(drvp->drive_name)); |
223 | drvp->cf_flags = as->sc_dev.dv_cfdata->cf_flags; |
224 | |
225 | wdc_probe_caps(drvp, id); |
226 | |
227 | WDCDEBUG_PRINT( |
228 | ("general config %04x capabilities %04x ", |
229 | id->atap_config, id->atap_capabilities1), |
230 | DEBUG_PROBE); |
231 | |
232 | if ((NERRS_MAX4 - 2) > 0) |
233 | drvp->n_dmaerrs = NERRS_MAX4 - 2; |
234 | else |
235 | drvp->n_dmaerrs = 0; |
236 | drvp->drive_flags |= DRIVE_DEVICE_RESET0x0800; |
237 | |
238 | /* Tape drives do funny DSC stuff */ |
239 | if (ATAPI_CFG_TYPE(id->atap_config)(((id->atap_config) & 0x1f00) >> 8) == |
240 | ATAPI_CFG_TYPE_SEQUENTIAL0x01) |
241 | drvp->atapi_cap |= ACAP_DSC0x02; |
242 | |
243 | if ((id->atap_config & ATAPI_CFG_CMD_MASK0x0003) == |
244 | ATAPI_CFG_CMD_160x0001) |
245 | drvp->atapi_cap |= ACAP_LEN0x01; |
246 | |
247 | drvp->atapi_cap |= |
248 | (id->atap_config & ATAPI_CFG_DRQ_MASK0x0060); |
249 | |
250 | WDCDEBUG_PRINT(("driver caps %04x\n", drvp->atapi_cap), |
251 | DEBUG_PROBE); |
252 | |
253 | |
254 | saa.saa_adapter_softc = as; |
255 | saa.saa_adapter_target = SDEV_NO_ADAPTER_TARGET0xffff; |
256 | saa.saa_adapter_buswidth = 2; |
257 | saa.saa_adapter = &atapiscsi_switch; |
258 | saa.saa_luns = 1; |
259 | saa.saa_openings = 1; |
260 | saa.saa_flags = SDEV_ATAPI0x0200; |
261 | saa.saa_pool = &wdc_xfer_iopool; |
262 | saa.saa_quirks = 0; |
263 | saa.saa_wwpn = saa.saa_wwnn = 0; |
264 | |
265 | child = config_found((struct device *)as, &saa, scsiprint)config_found_sm(((struct device *)as), (&saa), (scsiprint ), ((void *)0)); |
266 | |
267 | if (child != NULL((void *)0)) { |
268 | struct scsibus_softc *scsi = (struct scsibus_softc *)child; |
269 | struct scsi_link *link = scsi_get_link(scsi, 0, 0); |
270 | |
271 | if (link) { |
272 | strlcpy(drvp->drive_name, |
273 | ((struct device *)(link->device_softc))->dv_xname, |
274 | sizeof(drvp->drive_name)); |
275 | |
276 | wdc_print_caps(drvp); |
277 | } |
278 | } |
279 | |
280 | #ifdef WDCDEBUG |
281 | if (chp->wdc->sc_dev.dv_cfdata->cf_flags & WDC_OPTION_PROBE_VERBOSE0x10000) |
282 | wdcdebug_atapi_mask &= ~DEBUG_PROBE0x10; |
283 | #endif |
284 | } |
285 | |
286 | int |
287 | atapiscsi_activate(struct device *self, int act) |
288 | { |
289 | struct atapiscsi_softc *as = (void *)self; |
290 | struct channel_softc *chp = as->chp; |
291 | struct ata_drive_datas *drvp = &chp->ch_drive[as->drive]; |
292 | |
293 | switch (act) { |
294 | case DVACT_SUSPEND3: |
295 | break; |
296 | case DVACT_RESUME4: |
297 | /* |
298 | * Do two resets separated by a small delay. The |
299 | * first wakes the controller, the second resets |
300 | * the channel |
301 | */ |
302 | wdc_disable_intr(chp); |
303 | wdc_reset_channel(drvp, 1); |
304 | delay(10000)(*delay_func)(10000); |
305 | wdc_reset_channel(drvp, 0); |
306 | wdc_enable_intr(chp); |
307 | break; |
308 | } |
309 | return (0); |
310 | } |
311 | |
312 | int |
313 | atapiscsi_detach(struct device *dev, int flags) |
314 | { |
315 | return (config_detach_children(dev, flags)); |
316 | } |
317 | |
318 | void |
319 | wdc_atapi_send_cmd(struct scsi_xfer *sc_xfer) |
320 | { |
321 | struct atapiscsi_softc *as = sc_xfer->sc_link->bus->sb_adapter_softc; |
322 | struct channel_softc *chp = as->chp; |
323 | struct ata_drive_datas *drvp = &chp->ch_drive[as->drive]; |
324 | struct wdc_xfer *xfer; |
325 | int s; |
326 | int idx; |
327 | |
328 | WDCDEBUG_PRINT(("wdc_atapi_send_cmd %s:%d:%d start\n", |
329 | chp->wdc->sc_dev.dv_xname, chp->channel, as->drive), DEBUG_XFERS); |
330 | |
331 | if (sc_xfer->sc_link->target != 0) { |
332 | sc_xfer->error = XS_DRIVER_STUFFUP2; |
333 | scsi_done(sc_xfer); |
334 | return; |
335 | } |
336 | |
337 | xfer = sc_xfer->io; |
338 | wdc_scrub_xfer(xfer); |
339 | if (sc_xfer->flags & SCSI_POLL0x00002) |
340 | xfer->c_flags |= C_POLL0x0020; |
341 | xfer->drive = as->drive; |
342 | xfer->c_flags |= C_ATAPI0x0002; |
343 | xfer->cmd = sc_xfer; |
344 | xfer->databuf = sc_xfer->data; |
345 | xfer->c_bcount = sc_xfer->datalen; |
346 | xfer->c_start = wdc_atapi_start; |
347 | xfer->c_intr = wdc_atapi_intr; |
348 | |
349 | timeout_set(&xfer->atapi_poll_to, wdc_atapi_timer_handler, chp); |
350 | |
351 | WDCDEBUG_PRINT(("wdc_atapi_send_cmd %s:%d:%d ", |
352 | chp->wdc->sc_dev.dv_xname, chp->channel, as->drive), |
353 | DEBUG_XFERS | DEBUG_ERRORS); |
354 | |
355 | for (idx = 0; idx < sc_xfer->cmdlen; idx++) { |
356 | WDCDEBUG_PRINT((" %02x", |
357 | ((unsigned char *)&sc_xfer->cmd)[idx]), |
358 | DEBUG_XFERS | DEBUG_ERRORS); |
359 | } |
360 | WDCDEBUG_PRINT(("\n"), DEBUG_XFERS | DEBUG_ERRORS); |
361 | |
362 | s = splbio()splraise(0x6); |
363 | |
364 | if (drvp->atapi_cap & ACAP_DSC0x02) { |
365 | WDCDEBUG_PRINT(("about to send cmd 0x%x ", |
366 | sc_xfer->cmd.opcode), DEBUG_DSC); |
367 | switch (sc_xfer->cmd.opcode) { |
368 | case READ0x08: |
369 | case WRITE0x0a: |
370 | xfer->c_flags |= C_MEDIA_ACCESS0x0100; |
371 | |
372 | /* If we are not in buffer availability mode, |
373 | we limit the first request to 0 bytes, which |
374 | gets us into buffer availability mode without |
375 | holding the bus. */ |
376 | if (!(drvp->drive_flags & DRIVE_DSCBA0x0200)) { |
377 | xfer->c_bcount = 0; |
378 | xfer->transfer_len = |
379 | _3btol(((struct scsi_rw_tape *) |
380 | &sc_xfer->cmd)->len); |
381 | _lto3b(0, |
382 | ((struct scsi_rw_tape *) |
383 | &sc_xfer->cmd)->len); |
384 | xfer->c_done = wdc_atapi_tape_done; |
385 | WDCDEBUG_PRINT( |
386 | ("R/W in completion mode, do 0 blocks\n"), |
387 | DEBUG_DSC); |
388 | } else |
389 | WDCDEBUG_PRINT(("R/W %d blocks %d bytes\n", |
390 | _3btol(((struct scsi_rw_tape *) |
391 | &sc_xfer->cmd)->len), |
392 | sc_xfer->datalen), |
393 | DEBUG_DSC); |
394 | |
395 | /* DSC will change to buffer availability mode. |
396 | We reflect this in wdc_atapi_intr. */ |
397 | break; |
398 | |
399 | case ERASE0x19: /* Media access commands */ |
400 | case LOAD0x1b: |
401 | case REWIND0x01: |
402 | case SPACE0x11: |
403 | case WRITE_FILEMARKS0x10: |
404 | #if 0 |
405 | case LOCATE: |
406 | case READ_POSITION: |
407 | #endif |
408 | |
409 | xfer->c_flags |= C_MEDIA_ACCESS0x0100; |
410 | break; |
411 | |
412 | default: |
413 | WDCDEBUG_PRINT(("no media access\n"), DEBUG_DSC); |
414 | } |
415 | } |
416 | |
417 | wdc_exec_xfer(chp, xfer); |
418 | splx(s)spllower(s); |
419 | } |
420 | |
421 | int |
422 | wdc_atapi_ioctl (struct scsi_link *sc_link, u_long cmd, caddr_t addr, int flag) |
423 | { |
424 | struct atapiscsi_softc *as = sc_link->bus->sb_adapter_softc; |
425 | struct channel_softc *chp = as->chp; |
426 | struct ata_drive_datas *drvp = &chp->ch_drive[as->drive]; |
427 | |
428 | if (sc_link->target != 0) |
429 | return ENOTTY25; |
430 | |
431 | return (wdc_ioctl(drvp, cmd, addr, flag, curproc({struct cpu_info *__ci; asm volatile("movq %%gs:%P1,%0" : "=r" (__ci) :"n" (__builtin_offsetof(struct cpu_info, ci_self))); __ci;})->ci_curproc)); |
432 | } |
433 | |
434 | |
435 | /* |
436 | * Returns 1 if we experienced an ATA-level abort command |
437 | * (ABRT bit set but no additional sense) |
438 | * 0 if normal command processing |
439 | */ |
440 | int |
441 | atapi_to_scsi_sense(struct scsi_xfer *xfer, u_int8_t flags) |
442 | { |
443 | struct scsi_sense_data *sense = &xfer->sense; |
444 | int ret = 0; |
445 | |
446 | xfer->error = XS_SHORTSENSE6; |
447 | |
448 | sense->error_code = SSD_ERRCODE_VALID0x80 | SSD_ERRCODE_CURRENT0x70; |
449 | sense->flags = (flags >> 4); |
450 | |
451 | WDCDEBUG_PRINT(("Atapi error: %d ", (flags >> 4)), DEBUG_ERRORS); |
452 | |
453 | if ((flags & 4) && (sense->flags == 0)) { |
454 | sense->flags = SKEY_ABORTED_COMMAND0x0B; |
455 | WDCDEBUG_PRINT(("ABRT "), DEBUG_ERRORS); |
456 | ret = 1; |
457 | } |
458 | |
459 | if (flags & 0x1) { |
460 | sense->flags |= SSD_ILI0x20; |
461 | WDCDEBUG_PRINT(("ILI "), DEBUG_ERRORS); |
462 | } |
463 | |
464 | if (flags & 0x2) { |
465 | sense->flags |= SSD_EOM0x40; |
466 | WDCDEBUG_PRINT(("EOM "), DEBUG_ERRORS); |
467 | } |
468 | |
469 | /* Media change requested */ |
470 | /* Let's ignore these in version 1 */ |
471 | if (flags & 0x8) { |
472 | WDCDEBUG_PRINT(("MCR "), DEBUG_ERRORS); |
473 | if (sense->flags == 0) |
474 | xfer->error = XS_NOERROR0; |
475 | } |
476 | |
477 | WDCDEBUG_PRINT(("\n"), DEBUG_ERRORS); |
478 | return (ret); |
479 | } |
480 | |
481 | int wdc_atapi_drive_selected(struct channel_softc *, int); |
482 | |
483 | int |
484 | wdc_atapi_drive_selected(struct channel_softc *chp, int drive) |
485 | { |
486 | u_int8_t reg = CHP_READ_REG(chp, wdr_sdh)((chp)->_vtbl->read_reg)(chp, wdr_sdh); |
487 | |
488 | WDC_LOG_REG(chp, wdr_sdh, reg); |
489 | |
490 | return ((reg & 0x10) == (drive << 4)); |
491 | } |
492 | |
493 | enum atapi_context { |
494 | ctxt_process = 0, |
495 | ctxt_timer = 1, |
496 | ctxt_interrupt = 2 |
497 | }; |
498 | |
499 | void wdc_atapi_the_machine(struct channel_softc *, struct wdc_xfer *, |
500 | enum atapi_context); |
501 | |
502 | void wdc_atapi_the_poll_machine(struct channel_softc *, struct wdc_xfer *); |
503 | |
504 | void |
505 | wdc_atapi_start(struct channel_softc *chp, struct wdc_xfer *xfer) |
506 | { |
507 | xfer->next = wdc_atapi_real_start; |
508 | |
509 | wdc_atapi_the_machine(chp, xfer, ctxt_process); |
510 | } |
511 | |
512 | |
513 | void |
514 | wdc_atapi_timer_handler(void *arg) |
515 | { |
516 | struct channel_softc *chp = arg; |
517 | struct wdc_xfer *xfer; |
518 | int s; |
519 | |
520 | s = splbio()splraise(0x6); |
521 | xfer = TAILQ_FIRST(&chp->ch_queue->sc_xfer)((&chp->ch_queue->sc_xfer)->tqh_first); |
522 | if (xfer == NULL((void *)0) || |
523 | !timeout_triggered(&xfer->atapi_poll_to)((&xfer->atapi_poll_to)->to_flags & 0x08)) { |
524 | splx(s)spllower(s); |
525 | return; |
526 | } |
527 | xfer->c_flags &= ~C_POLL_MACHINE0x0200; |
528 | timeout_del(&xfer->atapi_poll_to); |
529 | chp->ch_flags &= ~WDCF_IRQ_WAIT0x10; |
530 | wdc_atapi_the_machine(chp, xfer, ctxt_timer); |
531 | splx(s)spllower(s); |
532 | } |
533 | |
534 | |
535 | int |
536 | wdc_atapi_intr(struct channel_softc *chp, struct wdc_xfer *xfer, int irq) |
537 | { |
538 | timeout_del(&chp->ch_timo); |
539 | |
540 | /* XXX we should consider an alternate signaling regime here */ |
541 | if (xfer->c_flags & C_TIMEOU0x0004) { |
542 | xfer->c_flags &= ~C_TIMEOU0x0004; |
543 | wdc_atapi_the_machine(chp, xfer, ctxt_timer); |
544 | return (0); |
545 | } |
546 | |
547 | wdc_atapi_the_machine(chp, xfer, ctxt_interrupt); |
548 | |
549 | return (-1); |
550 | } |
551 | |
552 | struct atapi_return_args { |
553 | int timeout; |
554 | int delay; |
555 | int expect_irq; |
556 | }; |
557 | |
558 | #define ARGS_INIT{-1, 0, 0} {-1, 0, 0} |
559 | |
560 | void |
561 | wdc_atapi_the_poll_machine(struct channel_softc *chp, struct wdc_xfer *xfer) |
562 | { |
563 | int idx = 0; |
564 | int current_timeout = 10; |
565 | |
566 | |
567 | while (1) { |
568 | struct atapi_return_args retargs = ARGS_INIT{-1, 0, 0}; |
569 | idx++; |
570 | |
571 | (xfer->next)(chp, xfer, (current_timeout * 1000 <= idx), |
572 | &retargs); |
573 | |
574 | if (xfer->next == NULL((void *)0)) { |
575 | wdc_free_xfer(chp, xfer); |
576 | wdcstart(chp); |
577 | return; |
578 | } |
579 | |
580 | if (retargs.timeout != -1) { |
581 | current_timeout = retargs.timeout; |
582 | idx = 0; |
583 | } |
584 | |
585 | if (retargs.delay != 0) { |
586 | delay (1000 * retargs.delay)(*delay_func)(1000 * retargs.delay); |
587 | idx += 1000 * retargs.delay; |
588 | } |
589 | |
590 | DELAY(1)(*delay_func)(1); |
591 | } |
592 | } |
593 | |
594 | |
595 | void |
596 | wdc_atapi_the_machine(struct channel_softc *chp, struct wdc_xfer *xfer, |
597 | enum atapi_context ctxt) |
598 | { |
599 | int idx = 0; |
600 | extern int ticks; |
601 | int timeout_delay = hz / 10; |
602 | |
603 | if (xfer->c_flags & C_POLL0x0020) { |
604 | wdc_disable_intr(chp); |
605 | |
606 | if (ctxt != ctxt_process) { |
607 | if (ctxt == ctxt_interrupt) |
608 | xfer->endticks = 1; |
609 | |
610 | return; |
611 | } |
612 | |
613 | wdc_atapi_the_poll_machine(chp, xfer); |
614 | return; |
615 | } |
616 | |
617 | /* Don't go through more than 50 state machine steps |
618 | before yielding. This tries to limit the amount of time |
619 | spent at high SPL */ |
620 | for (idx = 0; idx < 50; idx++) { |
621 | struct atapi_return_args retargs = ARGS_INIT{-1, 0, 0}; |
622 | |
623 | (xfer->next)(chp, xfer, |
624 | xfer->endticks && (ticks - xfer->endticks >= 0), |
625 | &retargs); |
626 | |
627 | if (retargs.timeout != -1) |
628 | /* |
629 | * Add 1 tick to compensate for the fact that we |
630 | * can be just microseconds before the tick changes. |
631 | */ |
632 | xfer->endticks = |
633 | max((retargs.timeout * hz) / 1000, 1) + 1 + ticks; |
634 | |
635 | if (xfer->next == NULL((void *)0)) { |
636 | if (xfer->c_flags & C_POLL_MACHINE0x0200) |
637 | timeout_del(&xfer->atapi_poll_to); |
638 | |
639 | wdc_free_xfer(chp, xfer); |
640 | wdcstart(chp); |
641 | |
642 | return; |
643 | } |
644 | |
645 | if (retargs.expect_irq) { |
646 | int timeout_period; |
647 | chp->ch_flags |= WDCF_IRQ_WAIT0x10; |
648 | timeout_period = xfer->endticks - ticks; |
649 | if (timeout_period < 1) |
650 | timeout_period = 1; |
651 | timeout_add(&chp->ch_timo, timeout_period); |
652 | return; |
653 | } |
654 | |
655 | if (retargs.delay != 0) { |
656 | timeout_delay = max(retargs.delay * hz / 1000, 1); |
657 | break; |
658 | } |
659 | |
660 | DELAY(1)(*delay_func)(1); |
661 | } |
662 | |
663 | timeout_add(&xfer->atapi_poll_to, timeout_delay); |
664 | xfer->c_flags |= C_POLL_MACHINE0x0200; |
665 | |
666 | return; |
667 | } |
668 | |
669 | |
670 | void wdc_atapi_update_status(struct channel_softc *); |
671 | |
672 | void |
673 | wdc_atapi_update_status(struct channel_softc *chp) |
674 | { |
675 | chp->ch_status = CHP_READ_REG(chp, wdr_status)((chp)->_vtbl->read_reg)(chp, wdr_status); |
676 | |
677 | WDC_LOG_STATUS(chp, chp->ch_status); |
678 | |
679 | if (chp->ch_status == 0xff && (chp->ch_flags & WDCF_ONESLAVE0x02)) { |
680 | wdc_set_drive(chp, 1); |
681 | |
682 | chp->ch_status = CHP_READ_REG(chp, wdr_status)((chp)->_vtbl->read_reg)(chp, wdr_status); |
683 | WDC_LOG_STATUS(chp, chp->ch_status); |
684 | } |
685 | |
686 | if ((chp->ch_status & (WDCS_BSY0x80 | WDCS_ERR0x01)) == WDCS_ERR0x01) { |
687 | chp->ch_error = CHP_READ_REG(chp, wdr_error)((chp)->_vtbl->read_reg)(chp, wdr_error); |
688 | WDC_LOG_ERROR(chp, chp->ch_error); |
689 | } |
690 | } |
691 | |
692 | void |
693 | wdc_atapi_real_start(struct channel_softc *chp, struct wdc_xfer *xfer, |
694 | int timeout, struct atapi_return_args *ret) |
695 | { |
696 | #ifdef WDCDEBUG |
697 | struct scsi_xfer *sc_xfer = xfer->cmd; |
698 | #endif |
699 | struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; |
700 | |
701 | /* |
702 | * Only set the DMA flag if the transfer is reasonably large. |
703 | * At least one older drive failed to complete a 4 byte DMA transfer. |
704 | */ |
705 | |
706 | /* Turn off DMA flag on REQUEST SENSE */ |
707 | |
708 | if (!(xfer->c_flags & (C_POLL0x0020 | C_SENSE0x0080 | C_MEDIA_ACCESS0x0100)) && |
709 | (drvp->drive_flags & (DRIVE_DMA0x0010 | DRIVE_UDMA0x0020)) && |
710 | (xfer->c_bcount > 100)) |
711 | xfer->c_flags |= C_DMA0x0040; |
712 | else |
713 | xfer->c_flags &= ~C_DMA0x0040; |
714 | |
715 | |
716 | wdc_set_drive(chp, xfer->drive); |
717 | |
718 | DELAY(1)(*delay_func)(1); |
719 | |
720 | xfer->next = wdc_atapi_real_start_2; |
721 | ret->timeout = ATAPI_DELAY10; |
722 | |
723 | WDCDEBUG_PRINT(("wdc_atapi_start %s:%d:%d, scsi flags 0x%x, " |
724 | "ATA flags 0x%x\n", |
725 | chp->wdc->sc_dev.dv_xname, chp->channel, drvp->drive, |
726 | sc_xfer->flags, xfer->c_flags), DEBUG_XFERS); |
727 | |
728 | |
729 | return; |
730 | } |
731 | |
732 | |
733 | void |
734 | wdc_atapi_real_start_2(struct channel_softc *chp, struct wdc_xfer *xfer, |
735 | int timeout, struct atapi_return_args *ret) |
736 | { |
737 | struct scsi_xfer *sc_xfer = xfer->cmd; |
738 | struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; |
739 | |
740 | if (timeout) { |
741 | printf("wdc_atapi_start: not ready, st = %02x\n", |
742 | chp->ch_status); |
743 | |
744 | sc_xfer->error = XS_TIMEOUT4; |
745 | xfer->next = wdc_atapi_reset; |
746 | return; |
747 | } else { |
748 | wdc_atapi_update_status(chp); |
749 | |
750 | if (chp->ch_status & (WDCS_BSY0x80 | WDCS_DRQ0x08)) |
751 | return; |
752 | } |
753 | |
754 | /* Do control operations specially. */ |
755 | if (drvp->state < ATAPI_READY_STATE) { |
756 | xfer->next = wdc_atapi_ctrl; |
757 | return; |
758 | } |
759 | |
760 | xfer->next = wdc_atapi_send_packet; |
761 | return; |
762 | } |
763 | |
764 | |
765 | void |
766 | wdc_atapi_send_packet(struct channel_softc *chp, struct wdc_xfer *xfer, |
767 | int timeout, struct atapi_return_args *ret) |
768 | { |
769 | struct scsi_xfer *sc_xfer = xfer->cmd; |
770 | struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; |
771 | |
772 | /* |
773 | * Even with WDCS_ERR, the device should accept a command packet. |
774 | * Limit length to what can be stuffed into the cylinder register |
775 | * (16 bits). Some CD-ROMs seem to interpret '0' as 65536, |
776 | * but not all devices do that and it's not obvious from the |
777 | * ATAPI spec that this behaviour should be expected. If more |
778 | * data is necessary, multiple data transfer phases will be done. |
779 | */ |
780 | |
781 | wdccommand(chp, xfer->drive, ATAPI_PKT_CMD0xa0, |
782 | xfer->c_bcount <= 0xfffe ? xfer->c_bcount : 0xfffe, |
783 | 0, 0, 0, |
784 | (xfer->c_flags & C_DMA0x0040) ? ATAPI_PKT_CMD_FTRE_DMA0x01 : 0); |
785 | |
786 | if (xfer->c_flags & C_DMA0x0040) |
787 | drvp->n_xfers++; |
788 | |
789 | DELAY(1)(*delay_func)(1); |
790 | |
791 | xfer->next = wdc_atapi_intr_command; |
792 | ret->timeout = sc_xfer->timeout; |
793 | |
794 | if ((drvp->atapi_cap & ATAPI_CFG_DRQ_MASK0x0060) == ATAPI_CFG_IRQ_DRQ0x0020) { |
795 | /* We expect an IRQ to tell us of the next state */ |
796 | ret->expect_irq = 1; |
797 | } |
798 | |
799 | WDCDEBUG_PRINT(("wdc_atapi_send_packet %s:%d:%d command sent\n", |
800 | chp->wdc->sc_dev.dv_xname, chp->channel, drvp->drive |
801 | ), DEBUG_XFERS); |
802 | return; |
803 | } |
804 | |
805 | void |
806 | wdc_atapi_intr_command(struct channel_softc *chp, struct wdc_xfer *xfer, |
807 | int timeout, struct atapi_return_args *ret) |
808 | { |
809 | struct scsi_xfer *sc_xfer = xfer->cmd; |
810 | struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; |
811 | struct atapiscsi_softc *as = sc_xfer->sc_link->bus->sb_adapter_softc; |
812 | int i; |
813 | u_int8_t cmd[16]; |
814 | struct scsi_sense *cmd_reqsense; |
815 | int cmdlen = (drvp->atapi_cap & ACAP_LEN0x01) ? 16 : 12; |
816 | int dma_flags = ((sc_xfer->flags & SCSI_DATA_IN0x00800) || |
817 | (xfer->c_flags & C_SENSE0x0080)) ? WDC_DMA_READ0x01 : 0; |
818 | |
819 | wdc_atapi_update_status(chp); |
820 | |
821 | if ((chp->ch_status & WDCS_BSY0x80) || !(chp->ch_status & WDCS_DRQ0x08)) { |
822 | if (timeout) |
823 | goto timeout; |
824 | |
825 | return; |
826 | } |
827 | |
828 | if (chp->wdc->cap & WDC_CAPABILITY_IRQACK0x0400) |
829 | chp->wdc->irqack(chp); |
830 | |
831 | bzero(cmd, sizeof(cmd))__builtin_bzero((cmd), (sizeof(cmd))); |
832 | |
833 | if (xfer->c_flags & C_SENSE0x0080) { |
834 | cmd_reqsense = (struct scsi_sense *)&cmd[0]; |
835 | cmd_reqsense->opcode = REQUEST_SENSE0x03; |
836 | cmd_reqsense->length = xfer->c_bcount; |
837 | } else |
838 | bcopy(&sc_xfer->cmd, cmd, sc_xfer->cmdlen); |
839 | |
840 | WDC_LOG_ATAPI_CMD(chp, xfer->drive, xfer->c_flags, |
841 | cmdlen, cmd); |
842 | |
843 | for (i = 0; i < 12; i++) |
844 | WDCDEBUG_PRINT(("%02x ", cmd[i]), DEBUG_INTR); |
845 | WDCDEBUG_PRINT((": PHASE_CMDOUT\n"), DEBUG_INTR); |
846 | |
847 | /* Init the DMA channel if necessary */ |
848 | if (xfer->c_flags & C_DMA0x0040) { |
849 | if ((*chp->wdc->dma_init)(chp->wdc->dma_arg, |
850 | chp->channel, xfer->drive, xfer->databuf, |
851 | xfer->c_bcount, dma_flags) != 0) { |
852 | sc_xfer->error = XS_DRIVER_STUFFUP2; |
853 | |
854 | xfer->next = wdc_atapi_reset; |
855 | return; |
856 | } |
857 | } |
858 | |
859 | wdc_output_bytes(drvp, cmd, cmdlen); |
860 | |
861 | /* Start the DMA channel if necessary */ |
862 | if (xfer->c_flags & C_DMA0x0040) { |
863 | (*chp->wdc->dma_start)(chp->wdc->dma_arg, |
864 | chp->channel, xfer->drive); |
865 | xfer->next = wdc_atapi_intr_complete; |
866 | } else { |
867 | if (xfer->c_bcount == 0) |
868 | as->protocol_phase = as_completed; |
869 | else |
870 | as->protocol_phase = as_data; |
871 | |
872 | xfer->next = wdc_atapi_pio_intr; |
873 | } |
874 | |
875 | ret->expect_irq = 1; |
876 | |
877 | /* If we read/write to a tape we will get into buffer |
878 | availability mode. */ |
879 | if (drvp->atapi_cap & ACAP_DSC0x02) { |
880 | if ((sc_xfer->cmd.opcode == READ0x08 || |
881 | sc_xfer->cmd.opcode == WRITE0x0a)) { |
882 | drvp->drive_flags |= DRIVE_DSCBA0x0200; |
883 | WDCDEBUG_PRINT(("set DSCBA\n"), DEBUG_DSC); |
884 | } else if ((xfer->c_flags & C_MEDIA_ACCESS0x0100) && |
885 | (drvp->drive_flags & DRIVE_DSCBA0x0200)) { |
886 | /* Clause 3.2.4 of QIC-157 D. |
887 | |
888 | Any media access command other than read or |
889 | write will switch DSC back to completion |
890 | mode */ |
891 | drvp->drive_flags &= ~DRIVE_DSCBA0x0200; |
892 | WDCDEBUG_PRINT(("clear DCSBA\n"), DEBUG_DSC); |
893 | } |
894 | } |
895 | |
896 | return; |
897 | |
898 | timeout: |
899 | printf ("%s:%d:%d: device timeout waiting to send SCSI packet\n", |
900 | chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive); |
901 | |
902 | sc_xfer->error = XS_TIMEOUT4; |
903 | xfer->next = wdc_atapi_reset; |
904 | return; |
905 | } |
906 | |
907 | |
908 | char * |
909 | wdc_atapi_in_data_phase(struct wdc_xfer *xfer, int len, int ire) |
910 | { |
911 | struct scsi_xfer *sc_xfer = xfer->cmd; |
912 | struct atapiscsi_softc *as = sc_xfer->sc_link->bus->sb_adapter_softc; |
913 | char *message; |
914 | |
915 | if (as->protocol_phase != as_data) { |
916 | message = "unexpected data phase"; |
917 | goto unexpected_state; |
918 | } |
919 | |
920 | if (ire & WDCI_CMD0x01) { |
921 | message = "unexpectedly in command phase"; |
922 | goto unexpected_state; |
923 | } |
924 | |
925 | if (!(xfer->c_flags & C_SENSE0x0080)) { |
926 | if (!(sc_xfer->flags & (SCSI_DATA_IN0x00800 | SCSI_DATA_OUT0x01000))) { |
927 | message = "data phase where none expected"; |
928 | goto unexpected_state; |
929 | } |
930 | |
931 | /* Make sure polarities match */ |
932 | if (((ire & WDCI_IN0x02) == WDCI_IN0x02) == |
933 | ((sc_xfer->flags & SCSI_DATA_OUT0x01000) == SCSI_DATA_OUT0x01000)) { |
934 | message = "data transfer direction disagreement"; |
935 | goto unexpected_state; |
936 | } |
937 | } else { |
938 | if (!(ire & WDCI_IN0x02)) { |
939 | message = "data transfer direction disagreement during sense"; |
940 | goto unexpected_state; |
941 | } |
942 | } |
943 | |
944 | if (len == 0) { |
945 | message = "zero length transfer requested in data phase"; |
946 | goto unexpected_state; |
947 | } |
948 | |
949 | |
950 | return (0); |
951 | |
952 | unexpected_state: |
953 | |
954 | return (message); |
955 | } |
956 | |
957 | void |
958 | wdc_atapi_intr_data(struct channel_softc *chp, struct wdc_xfer *xfer, |
959 | int timeout, struct atapi_return_args *ret) |
960 | { |
961 | struct scsi_xfer *sc_xfer = xfer->cmd; |
962 | struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; |
963 | int len, ire; |
964 | char *message; |
965 | int tohost; |
966 | |
967 | len = (CHP_READ_REG(chp, wdr_cyl_hi)((chp)->_vtbl->read_reg)(chp, wdr_cyl_hi) << 8) | |
968 | CHP_READ_REG(chp, wdr_cyl_lo)((chp)->_vtbl->read_reg)(chp, wdr_cyl_lo); |
969 | WDC_LOG_REG(chp, wdr_cyl_lo, len); |
970 | |
971 | ire = CHP_READ_REG(chp, wdr_ireason)((chp)->_vtbl->read_reg)(chp, wdr_ireason); |
972 | WDC_LOG_REG(chp, wdr_ireason, ire); |
973 | |
974 | if ((message = wdc_atapi_in_data_phase(xfer, len, ire))) { |
Although the value stored to 'message' is used in the enclosing expression, the value is never actually read from 'message' | |
975 | /* The drive has dropped BSY before setting up the |
976 | registers correctly for DATA phase. This drive is |
977 | not compliant with ATA/ATAPI-4. |
978 | |
979 | Give the drive 100ms to get its house in order |
980 | before we try again. */ |
981 | WDCDEBUG_PRINT(("wdc_atapi_intr: %s\n", message), |
982 | DEBUG_ERRORS); |
983 | |
984 | if (!timeout) { |
985 | ret->delay = 100; |
986 | return; |
987 | } |
988 | } |
989 | |
990 | tohost = ((sc_xfer->flags & SCSI_DATA_IN0x00800) != 0 || |
991 | (xfer->c_flags & C_SENSE0x0080) != 0); |
992 | |
993 | if (xfer->c_bcount >= len) { |
994 | WDCDEBUG_PRINT(("wdc_atapi_intr: c_bcount %d len %d " |
995 | "st 0x%b err 0x%x " |
996 | "ire 0x%x\n", xfer->c_bcount, |
997 | len, chp->ch_status, WDCS_BITS, chp->ch_error, ire), |
998 | DEBUG_INTR); |
999 | |
1000 | /* Common case */ |
1001 | if (!tohost) |
1002 | wdc_output_bytes(drvp, (u_int8_t *)xfer->databuf + |
1003 | xfer->c_skip, len); |
1004 | else |
1005 | wdc_input_bytes(drvp, (u_int8_t *)xfer->databuf + |
1006 | xfer->c_skip, len); |
1007 | |
1008 | xfer->c_skip += len; |
1009 | xfer->c_bcount -= len; |
1010 | } else { |
1011 | /* Exceptional case - drive want to transfer more |
1012 | data than we have buffer for */ |
1013 | if (!tohost) { |
1014 | /* Wouldn't it be better to just abort here rather |
1015 | than to write random stuff to drive? */ |
1016 | printf("wdc_atapi_intr: warning: device requesting " |
1017 | "%d bytes, only %d left in buffer\n", len, xfer->c_bcount); |
1018 | |
1019 | wdc_output_bytes(drvp, (u_int8_t *)xfer->databuf + |
1020 | xfer->c_skip, xfer->c_bcount); |
1021 | |
1022 | CHP_WRITE_RAW_MULTI_2(chp, NULL,((chp)->_vtbl->write_raw_multi_2)(chp, ((void *)0), len - xfer->c_bcount) |
1023 | len - xfer->c_bcount)((chp)->_vtbl->write_raw_multi_2)(chp, ((void *)0), len - xfer->c_bcount); |
1024 | } else { |
1025 | printf("wdc_atapi_intr: warning: reading only " |
1026 | "%d of %d bytes\n", xfer->c_bcount, len); |
1027 | |
1028 | wdc_input_bytes(drvp, |
1029 | (char *)xfer->databuf + xfer->c_skip, |
1030 | xfer->c_bcount); |
1031 | wdcbit_bucket(chp, len - xfer->c_bcount); |
1032 | } |
1033 | |
1034 | xfer->c_skip += xfer->c_bcount; |
1035 | xfer->c_bcount = 0; |
1036 | } |
1037 | |
1038 | ret->expect_irq = 1; |
1039 | xfer->next = wdc_atapi_pio_intr; |
1040 | |
1041 | return; |
1042 | } |
1043 | |
1044 | void |
1045 | wdc_atapi_intr_complete(struct channel_softc *chp, struct wdc_xfer *xfer, |
1046 | int timeout, struct atapi_return_args *ret) |
1047 | { |
1048 | struct scsi_xfer *sc_xfer = xfer->cmd; |
1049 | struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; |
1050 | struct atapiscsi_softc *as = sc_xfer->sc_link->bus->sb_adapter_softc; |
1051 | |
1052 | WDCDEBUG_PRINT(("PHASE_COMPLETED\n"), DEBUG_INTR); |
1053 | |
1054 | if (xfer->c_flags & C_DMA0x0040) { |
1055 | int retry; |
1056 | |
1057 | if (timeout) { |
1058 | sc_xfer->error = XS_TIMEOUT4; |
1059 | ata_dmaerr(drvp); |
1060 | |
1061 | xfer->next = wdc_atapi_reset; |
1062 | return; |
1063 | } |
1064 | |
1065 | for (retry = 5; retry > 0; retry--) { |
1066 | wdc_atapi_update_status(chp); |
1067 | if ((chp->ch_status & (WDCS_BSY0x80 | WDCS_DRQ0x08)) == 0) |
1068 | break; |
1069 | DELAY(5)(*delay_func)(5); |
1070 | } |
1071 | if (retry == 0) { |
1072 | ret->expect_irq = 1; |
1073 | return; |
1074 | } |
1075 | |
1076 | chp->wdc->dma_status = |
1077 | (*chp->wdc->dma_finish) |
1078 | (chp->wdc->dma_arg, chp->channel, |
1079 | xfer->drive, 1); |
1080 | |
1081 | if (chp->wdc->dma_status & WDC_DMAST_UNDER0x04) |
1082 | xfer->c_bcount = 1; |
1083 | else |
1084 | xfer->c_bcount = 0; |
1085 | } |
1086 | |
1087 | as->protocol_phase = as_none; |
1088 | |
1089 | if (xfer->c_flags & C_SENSE0x0080) { |
1090 | if (chp->ch_status & WDCS_ERR0x01) { |
1091 | if (chp->ch_error & WDCE_ABRT0x04) { |
1092 | WDCDEBUG_PRINT(("wdc_atapi_intr: request_sense aborted, " |
1093 | "calling wdc_atapi_done()" |
1094 | ), DEBUG_INTR); |
1095 | xfer->next = wdc_atapi_done; |
1096 | return; |
1097 | } |
1098 | |
1099 | /* |
1100 | * request sense failed ! it's not supposed |
1101 | * to be possible |
1102 | */ |
1103 | sc_xfer->error = XS_SHORTSENSE6; |
1104 | } else if (xfer->c_bcount < sizeof(sc_xfer->sense)) { |
1105 | /* use the sense we just read */ |
1106 | sc_xfer->error = XS_SENSE1; |
1107 | } else { |
1108 | /* |
1109 | * command completed, but no data was read. |
1110 | * use the short sense we saved previously. |
1111 | */ |
1112 | sc_xfer->error = XS_SHORTSENSE6; |
1113 | } |
1114 | } else { |
1115 | sc_xfer->resid = xfer->c_bcount; |
1116 | if (chp->ch_status & WDCS_ERR0x01) { |
1117 | if (!atapi_to_scsi_sense(sc_xfer, chp->ch_error) && |
1118 | (sc_xfer->sc_link->quirks & |
1119 | ADEV_NOSENSE0x0020) == 0) { |
1120 | /* |
1121 | * let the driver issue a |
1122 | * 'request sense' |
1123 | */ |
1124 | xfer->databuf = &sc_xfer->sense; |
1125 | xfer->c_bcount = sizeof(sc_xfer->sense); |
1126 | xfer->c_skip = 0; |
1127 | xfer->c_done = NULL((void *)0); |
1128 | xfer->c_flags |= C_SENSE0x0080; |
1129 | xfer->next = wdc_atapi_real_start; |
1130 | return; |
1131 | } |
1132 | } |
1133 | } |
1134 | |
1135 | if ((xfer->c_flags & C_DMA0x0040) && |
1136 | (chp->wdc->dma_status & ~WDC_DMAST_UNDER0x04)) { |
1137 | ata_dmaerr(drvp); |
1138 | sc_xfer->error = XS_RESET8; |
1139 | |
1140 | xfer->next = wdc_atapi_reset; |
1141 | return; |
1142 | } |
1143 | |
1144 | |
1145 | if (xfer->c_bcount != 0) { |
1146 | WDCDEBUG_PRINT(("wdc_atapi_intr: bcount value is " |
1147 | "%d after io\n", xfer->c_bcount), DEBUG_XFERS); |
1148 | } |
1149 | #ifdef DIAGNOSTIC1 |
1150 | if (xfer->c_bcount < 0) { |
1151 | printf("wdc_atapi_intr warning: bcount value " |
1152 | "is %d after io\n", xfer->c_bcount); |
1153 | } |
1154 | #endif |
1155 | |
1156 | WDCDEBUG_PRINT(("wdc_atapi_intr: wdc_atapi_done() (end), error 0x%x " |
1157 | "\n", sc_xfer->error), |
1158 | DEBUG_INTR); |
1159 | |
1160 | |
1161 | if (xfer->c_done) |
1162 | xfer->next = xfer->c_done; |
1163 | else |
1164 | xfer->next = wdc_atapi_done; |
1165 | |
1166 | return; |
1167 | } |
1168 | |
1169 | void |
1170 | wdc_atapi_pio_intr(struct channel_softc *chp, struct wdc_xfer *xfer, |
1171 | int timeout, struct atapi_return_args *ret) |
1172 | { |
1173 | struct scsi_xfer *sc_xfer = xfer->cmd; |
1174 | struct atapiscsi_softc *as = sc_xfer->sc_link->bus->sb_adapter_softc; |
1175 | u_int8_t ireason; |
1176 | |
1177 | wdc_atapi_update_status(chp); |
1178 | |
1179 | if (chp->ch_status & WDCS_BSY0x80) { |
1180 | if (timeout) |
1181 | goto timeout; |
1182 | |
1183 | return; |
1184 | } |
1185 | |
1186 | if (!wdc_atapi_drive_selected(chp, xfer->drive)) { |
1187 | WDCDEBUG_PRINT(("wdc_atapi_intr_for_us: wrong drive selected\n"), DEBUG_INTR); |
1188 | wdc_set_drive(chp, xfer->drive); |
1189 | delay (1)(*delay_func)(1); |
1190 | |
1191 | if (!timeout) |
1192 | return; |
1193 | } |
1194 | |
1195 | if ((xfer->c_flags & C_MEDIA_ACCESS0x0100) && |
1196 | !(chp->ch_status & (WDCS_DSC0x10 | WDCS_DRQ0x08))) { |
1197 | if (timeout) |
1198 | goto timeout; |
1199 | |
1200 | ret->delay = 100; |
1201 | return; |
1202 | } |
1203 | |
1204 | if (chp->wdc->cap & WDC_CAPABILITY_IRQACK0x0400) |
1205 | chp->wdc->irqack(chp); |
1206 | |
1207 | ireason = CHP_READ_REG(chp, wdr_ireason)((chp)->_vtbl->read_reg)(chp, wdr_ireason); |
1208 | WDC_LOG_REG(chp, wdr_ireason, ireason); |
1209 | |
1210 | WDCDEBUG_PRINT(("Phase %d, (0x%b, 0x%x) ", as->protocol_phase, |
1211 | chp->ch_status, WDCS_BITS, ireason), DEBUG_INTR ); |
1212 | |
1213 | switch (as->protocol_phase) { |
1214 | case as_data: |
1215 | if ((chp->ch_status & WDCS_DRQ0x08) || |
1216 | (ireason & 3) != 3) { |
1217 | if (timeout) |
1218 | goto timeout; |
1219 | |
1220 | wdc_atapi_intr_data(chp, xfer, timeout, ret); |
1221 | return; |
1222 | } |
1223 | |
1224 | wdc_atapi_intr_complete(chp, xfer, timeout, ret); |
1225 | return; |
1226 | |
1227 | case as_completed: |
1228 | if ((chp->ch_status & WDCS_DRQ0x08) || |
1229 | (ireason & 3) != 3) { |
1230 | if (timeout) |
1231 | goto timeout; |
1232 | |
1233 | ret->delay = 100; |
1234 | return; |
1235 | } |
1236 | |
1237 | wdc_atapi_intr_complete(chp, xfer, timeout, ret); |
1238 | return; |
1239 | |
1240 | default: |
1241 | printf ("atapiscsi: Shouldn't get here\n"); |
1242 | sc_xfer->error = XS_DRIVER_STUFFUP2; |
1243 | xfer->next = wdc_atapi_reset; |
1244 | return; |
1245 | } |
1246 | |
1247 | return; |
1248 | timeout: |
1249 | ireason = CHP_READ_REG(chp, wdr_ireason)((chp)->_vtbl->read_reg)(chp, wdr_ireason); |
1250 | WDC_LOG_REG(chp, wdr_ireason, ireason); |
1251 | |
1252 | printf("%s:%d:%d: device timeout, c_bcount=%d, c_skip=%d, " |
1253 | "status=0x%b, ireason=0x%x\n", |
1254 | chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, |
1255 | xfer->c_bcount, xfer->c_skip, chp->ch_status, WDCS_BITS"\020\010BSY\007DRDY\006DWF\005DSC\004DRQ\003CORR\002IDX\001ERR", ireason); |
1256 | |
1257 | sc_xfer->error = XS_TIMEOUT4; |
1258 | xfer->next = wdc_atapi_reset; |
1259 | return; |
1260 | } |
1261 | |
1262 | void |
1263 | wdc_atapi_ctrl(struct channel_softc *chp, struct wdc_xfer *xfer, |
1264 | int timeout, struct atapi_return_args *ret) |
1265 | { |
1266 | struct scsi_xfer *sc_xfer = xfer->cmd; |
1267 | struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; |
1268 | char *errstring = NULL((void *)0); |
1269 | |
1270 | wdc_atapi_update_status(chp); |
1271 | |
1272 | if (!timeout) { |
1273 | switch (drvp->state) { |
1274 | case ATAPI_IDENTIFY_WAIT_STATE: |
1275 | if (chp->ch_status & WDCS_BSY0x80) |
1276 | return; |
1277 | break; |
1278 | default: |
1279 | if (chp->ch_status & (WDCS_BSY0x80 | WDCS_DRQ0x08)) |
1280 | return; |
1281 | break; |
1282 | } |
1283 | } |
1284 | |
1285 | if (!wdc_atapi_drive_selected(chp, xfer->drive)) |
1286 | { |
1287 | wdc_set_drive(chp, xfer->drive); |
1288 | delay (1)(*delay_func)(1); |
1289 | } |
1290 | |
1291 | if (timeout) { |
1292 | int trigger_timeout = 1; |
1293 | |
1294 | switch (drvp->state) { |
1295 | case ATAPI_DEVICE_RESET_WAIT_STATE: |
1296 | errstring = "Device Reset Wait"; |
1297 | drvp->drive_flags &= ~DRIVE_DEVICE_RESET0x0800; |
1298 | break; |
1299 | |
1300 | case ATAPI_IDENTIFY_WAIT_STATE: |
1301 | errstring = "Identify"; |
1302 | if (!(chp->ch_status & WDCS_BSY0x80) && |
1303 | (chp->ch_status & (WDCS_DRQ0x08 | WDCS_ERR0x01))) |
1304 | trigger_timeout = 0; |
1305 | |
1306 | break; |
1307 | |
1308 | case ATAPI_PIOMODE_STATE: |
1309 | errstring = "Post-Identify"; |
1310 | if (!(chp->ch_status & (WDCS_BSY0x80 | WDCS_DRQ0x08))) |
1311 | trigger_timeout = 0; |
1312 | break; |
1313 | |
1314 | case ATAPI_PIOMODE_WAIT_STATE: |
1315 | errstring = "PIOMODE"; |
1316 | if (chp->ch_status & (WDCS_BSY0x80 | WDCS_DRQ0x08)) |
1317 | drvp->drive_flags &= ~DRIVE_MODE0x0040; |
1318 | else |
1319 | trigger_timeout = 0; |
1320 | break; |
1321 | case ATAPI_DMAMODE_WAIT_STATE: |
1322 | errstring = "dmamode"; |
1323 | if (chp->ch_status & (WDCS_BSY0x80 | WDCS_DRQ0x08)) |
1324 | drvp->drive_flags &= ~(DRIVE_DMA0x0010 | DRIVE_UDMA0x0020); |
1325 | else |
1326 | trigger_timeout = 0; |
1327 | break; |
1328 | |
1329 | default: |
1330 | errstring = "unknown state"; |
1331 | break; |
1332 | } |
1333 | |
1334 | if (trigger_timeout) |
1335 | goto timeout; |
1336 | } |
1337 | |
1338 | WDCDEBUG_PRINT(("wdc_atapi_ctrl %s:%d:%d state %d\n", |
1339 | chp->wdc->sc_dev.dv_xname, chp->channel, drvp->drive, drvp->state), |
1340 | DEBUG_INTR | DEBUG_FUNCS); |
1341 | |
1342 | switch (drvp->state) { |
1343 | /* My ATAPI slave device likes to assert DASP-/PDIAG- until |
1344 | it is DEVICE RESET. This causes the LED to stay on. |
1345 | |
1346 | There is a trade-off here. This drive will cause any |
1347 | play-back or seeks happening to be interrupted. |
1348 | |
1349 | Note that the bus reset that triggered this state |
1350 | (which may have been caused by the other drive on |
1351 | the chain) need not interrupt this playback. It happens |
1352 | to on my Smart & Friendly CD burner. |
1353 | |
1354 | - csapuntz@ |
1355 | */ |
1356 | case ATAPI_RESET_BASE_STATE: |
1357 | if ((drvp->drive_flags & DRIVE_DEVICE_RESET0x0800) == 0) { |
1358 | drvp->state = ATAPI_IDENTIFY_STATE; |
1359 | break; |
1360 | } |
1361 | |
1362 | wdccommandshort(chp, drvp->drive, ATAPI_DEVICE_RESET0x08); |
1363 | drvp->state = ATAPI_DEVICE_RESET_WAIT_STATE; |
1364 | ret->delay = ATAPI_RESET_DELAY1000; |
1365 | ret->timeout = ATAPI_RESET_WAIT2000; |
1366 | break; |
1367 | |
1368 | case ATAPI_DEVICE_RESET_WAIT_STATE: |
1369 | /* FALLTHROUGH */ |
1370 | |
1371 | case ATAPI_IDENTIFY_STATE: |
1372 | wdccommandshort(chp, drvp->drive, ATAPI_IDENTIFY_DEVICE0xa1); |
1373 | drvp->state = ATAPI_IDENTIFY_WAIT_STATE; |
1374 | ret->delay = 10; |
1375 | ret->timeout = ATAPI_RESET_WAIT2000; |
1376 | break; |
1377 | |
1378 | case ATAPI_IDENTIFY_WAIT_STATE: { |
1379 | int idx = 0; |
1380 | |
1381 | while ((chp->ch_status & WDCS_DRQ0x08) && |
1382 | idx++ < 20) { |
1383 | wdcbit_bucket(chp, 512); |
1384 | |
1385 | DELAY(1)(*delay_func)(1); |
1386 | wdc_atapi_update_status(chp); |
1387 | } |
1388 | |
1389 | drvp->state = ATAPI_PIOMODE_STATE; |
1390 | /* |
1391 | * Note, we can't go directly to set PIO mode |
1392 | * because the drive is free to assert BSY |
1393 | * after the transfer |
1394 | */ |
1395 | break; |
1396 | } |
1397 | |
1398 | case ATAPI_PIOMODE_STATE: |
1399 | /* Don't try to set mode if controller can't be adjusted */ |
1400 | if ((chp->wdc->cap & WDC_CAPABILITY_MODE0x0004) == 0) |
1401 | goto ready; |
1402 | /* Also don't try if the drive didn't report its mode */ |
1403 | if ((drvp->drive_flags & DRIVE_MODE0x0040) == 0) |
1404 | goto ready; |
1405 | /* SET FEATURES 0x08 is only for PIO mode > 2 */ |
1406 | if (drvp->PIO_mode <= 2) |
1407 | goto ready; |
1408 | wdccommand(chp, drvp->drive, SET_FEATURES0xef, 0, 0, 0, |
1409 | 0x08 | drvp->PIO_mode, WDSF_SET_MODE0x03); |
1410 | drvp->state = ATAPI_PIOMODE_WAIT_STATE; |
1411 | ret->timeout = ATAPI_CTRL_WAIT4000; |
1412 | ret->expect_irq = 1; |
1413 | break; |
1414 | case ATAPI_PIOMODE_WAIT_STATE: |
1415 | if (chp->wdc->cap & WDC_CAPABILITY_IRQACK0x0400) |
1416 | chp->wdc->irqack(chp); |
1417 | if (chp->ch_status & WDCS_ERR0x01) { |
1418 | /* Downgrade straight to PIO mode 3 */ |
1419 | drvp->PIO_mode = 3; |
1420 | chp->wdc->set_modes(chp); |
1421 | } |
1422 | /* FALLTHROUGH */ |
1423 | |
1424 | case ATAPI_DMAMODE_STATE: |
1425 | if (drvp->drive_flags & DRIVE_UDMA0x0020) { |
1426 | wdccommand(chp, drvp->drive, SET_FEATURES0xef, 0, 0, 0, |
1427 | 0x40 | drvp->UDMA_mode, WDSF_SET_MODE0x03); |
1428 | } else if (drvp->drive_flags & DRIVE_DMA0x0010) { |
1429 | wdccommand(chp, drvp->drive, SET_FEATURES0xef, 0, 0, 0, |
1430 | 0x20 | drvp->DMA_mode, WDSF_SET_MODE0x03); |
1431 | } else { |
1432 | goto ready; |
1433 | } |
1434 | drvp->state = ATAPI_DMAMODE_WAIT_STATE; |
1435 | |
1436 | ret->timeout = ATAPI_CTRL_WAIT4000; |
1437 | ret->expect_irq = 1; |
1438 | break; |
1439 | |
1440 | case ATAPI_DMAMODE_WAIT_STATE: |
1441 | if (chp->wdc->cap & WDC_CAPABILITY_IRQACK0x0400) |
1442 | chp->wdc->irqack(chp); |
1443 | if (chp->ch_status & WDCS_ERR0x01) |
1444 | drvp->drive_flags &= ~(DRIVE_DMA0x0010 | DRIVE_UDMA0x0020); |
1445 | /* FALLTHROUGH */ |
1446 | |
1447 | case ATAPI_READY_STATE: |
1448 | ready: |
1449 | drvp->state = ATAPI_READY_STATE; |
1450 | xfer->next = wdc_atapi_real_start; |
1451 | break; |
1452 | } |
1453 | return; |
1454 | |
1455 | timeout: |
1456 | printf("%s:%d:%d: %s timed out\n", |
1457 | chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, errstring); |
1458 | sc_xfer->error = XS_TIMEOUT4; |
1459 | xfer->next = wdc_atapi_reset; |
1460 | return; |
1461 | |
1462 | } |
1463 | |
1464 | void |
1465 | wdc_atapi_tape_done(struct channel_softc *chp, struct wdc_xfer *xfer, |
1466 | int timeout, struct atapi_return_args *ret) |
1467 | { |
1468 | struct scsi_xfer *sc_xfer = xfer->cmd; |
1469 | |
1470 | if (sc_xfer->error != XS_NOERROR0) { |
1471 | xfer->next = wdc_atapi_done; |
1472 | return; |
1473 | } |
1474 | |
1475 | _lto3b(xfer->transfer_len, |
1476 | ((struct scsi_rw_tape *) |
1477 | &sc_xfer->cmd)->len); |
1478 | |
1479 | xfer->c_bcount = sc_xfer->datalen; |
1480 | xfer->c_done = NULL((void *)0); |
1481 | xfer->c_skip = 0; |
1482 | |
1483 | xfer->next = wdc_atapi_real_start; |
1484 | return; |
1485 | } |
1486 | |
1487 | |
1488 | void |
1489 | wdc_atapi_done(struct channel_softc *chp, struct wdc_xfer *xfer, |
1490 | int timeout, struct atapi_return_args *ret) |
1491 | { |
1492 | struct scsi_xfer *sc_xfer = xfer->cmd; |
1493 | |
1494 | WDCDEBUG_PRINT(("wdc_atapi_done %s:%d:%d: flags 0x%x error 0x%x\n", |
1495 | chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, |
1496 | (u_int)xfer->c_flags, sc_xfer->error), DEBUG_XFERS); |
1497 | WDC_LOG_ATAPI_DONE(chp, xfer->drive, xfer->c_flags, sc_xfer->error); |
1498 | |
1499 | if (xfer->c_flags & C_POLL0x0020) |
1500 | wdc_enable_intr(chp); |
1501 | |
1502 | scsi_done(sc_xfer); |
1503 | |
1504 | xfer->next = NULL((void *)0); |
1505 | return; |
1506 | } |
1507 | |
1508 | |
1509 | void |
1510 | wdc_atapi_reset(struct channel_softc *chp, struct wdc_xfer *xfer, |
1511 | int timeout, struct atapi_return_args *ret) |
1512 | { |
1513 | struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; |
1514 | |
1515 | if (drvp->state == 0) { |
1516 | xfer->next = wdc_atapi_done; |
1517 | return; |
1518 | } |
1519 | |
1520 | WDCDEBUG_PRINT(("wdc_atapi_reset\n"), DEBUG_XFERS); |
1521 | wdccommandshort(chp, xfer->drive, ATAPI_SOFT_RESET0x08); |
1522 | drvp->state = ATAPI_IDENTIFY_STATE; |
1523 | |
1524 | drvp->n_resets++; |
1525 | /* Some ATAPI devices need extra time to find their |
1526 | brains after a reset |
1527 | */ |
1528 | xfer->next = wdc_atapi_reset_2; |
1529 | ret->delay = ATAPI_RESET_DELAY1000; |
1530 | ret->timeout = ATAPI_RESET_WAIT2000; |
1531 | return; |
1532 | } |
1533 | |
1534 | void |
1535 | wdc_atapi_reset_2(struct channel_softc *chp, struct wdc_xfer *xfer, |
1536 | int timeout, struct atapi_return_args *ret) |
1537 | { |
1538 | struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; |
1539 | struct scsi_xfer *sc_xfer = xfer->cmd; |
1540 | |
1541 | if (timeout) { |
1542 | printf("%s:%d:%d: soft reset failed\n", |
1543 | chp->wdc->sc_dev.dv_xname, chp->channel, |
1544 | xfer->drive); |
1545 | sc_xfer->error = XS_SELTIMEOUT3; |
1546 | wdc_reset_channel(drvp, 0); |
1547 | |
1548 | xfer->next = wdc_atapi_done; |
1549 | return; |
1550 | } |
1551 | |
1552 | wdc_atapi_update_status(chp); |
1553 | |
1554 | if (chp->ch_status & (WDCS_BSY0x80 | WDCS_DRQ0x08)) { |
1555 | return; |
1556 | } |
1557 | |
1558 | xfer->next = wdc_atapi_done; |
1559 | return; |
1560 | } |