1 | /* $NetBSD: siop.c,v 1.100 2013/11/02 13:59:14 gson Exp $ */ |
2 | |
3 | /* |
4 | * Copyright (c) 2000 Manuel Bouyer. |
5 | * |
6 | * Redistribution and use in source and binary forms, with or without |
7 | * modification, are permitted provided that the following conditions |
8 | * are met: |
9 | * 1. Redistributions of source code must retain the above copyright |
10 | * notice, this list of conditions and the following disclaimer. |
11 | * 2. Redistributions in binary form must reproduce the above copyright |
12 | * notice, this list of conditions and the following disclaimer in the |
13 | * documentation and/or other materials provided with the distribution. |
14 | * |
15 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
16 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
17 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
18 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
19 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
20 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
21 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
22 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
23 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
24 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
25 | * |
26 | */ |
27 | |
28 | /* SYM53c7/8xx PCI-SCSI I/O Processors driver */ |
29 | |
30 | #include <sys/cdefs.h> |
31 | __KERNEL_RCSID(0, "$NetBSD: siop.c,v 1.100 2013/11/02 13:59:14 gson Exp $" ); |
32 | |
33 | #include <sys/param.h> |
34 | #include <sys/systm.h> |
35 | #include <sys/device.h> |
36 | #include <sys/malloc.h> |
37 | #include <sys/buf.h> |
38 | #include <sys/kernel.h> |
39 | |
40 | #include <machine/endian.h> |
41 | #include <sys/bus.h> |
42 | |
43 | #include <dev/microcode/siop/siop.out> |
44 | |
45 | #include <dev/scsipi/scsi_all.h> |
46 | #include <dev/scsipi/scsi_message.h> |
47 | #include <dev/scsipi/scsipi_all.h> |
48 | |
49 | #include <dev/scsipi/scsiconf.h> |
50 | |
51 | #include <dev/ic/siopreg.h> |
52 | #include <dev/ic/siopvar_common.h> |
53 | #include <dev/ic/siopvar.h> |
54 | |
55 | #include "opt_siop.h" |
56 | |
57 | /* |
58 | #define SIOP_DEBUG |
59 | #define SIOP_DEBUG_DR |
60 | #define SIOP_DEBUG_INTR |
61 | #define SIOP_DEBUG_SCHED |
62 | #define SIOP_DUMP_SCRIPT |
63 | */ |
64 | |
65 | #define SIOP_STATS |
66 | |
67 | #ifndef SIOP_DEFAULT_TARGET |
68 | #define SIOP_DEFAULT_TARGET 7 |
69 | #endif |
70 | |
71 | /* number of cmd descriptors per block */ |
72 | #define SIOP_NCMDPB (PAGE_SIZE / sizeof(struct siop_xfer)) |
73 | |
74 | /* Number of scheduler slot (needs to match script) */ |
75 | #define SIOP_NSLOTS 40 |
76 | |
77 | void siop_reset(struct siop_softc *); |
78 | void siop_handle_reset(struct siop_softc *); |
79 | int siop_handle_qtag_reject(struct siop_cmd *); |
80 | void siop_scsicmd_end(struct siop_cmd *); |
81 | void siop_unqueue(struct siop_softc *, int, int); |
82 | static void siop_start(struct siop_softc *, struct siop_cmd *); |
83 | void siop_timeout(void *); |
84 | int siop_scsicmd(struct scsipi_xfer *); |
85 | void siop_scsipi_request(struct scsipi_channel *, |
86 | scsipi_adapter_req_t, void *); |
87 | void siop_dump_script(struct siop_softc *); |
88 | void siop_morecbd(struct siop_softc *); |
89 | struct siop_lunsw *siop_get_lunsw(struct siop_softc *); |
90 | void siop_add_reselsw(struct siop_softc *, int); |
91 | void siop_update_scntl3(struct siop_softc *, |
92 | struct siop_common_target *); |
93 | |
94 | #ifdef SIOP_STATS |
95 | static int siop_stat_intr = 0; |
96 | static int siop_stat_intr_shortxfer = 0; |
97 | static int siop_stat_intr_sdp = 0; |
98 | static int siop_stat_intr_saveoffset = 0; |
99 | static int siop_stat_intr_done = 0; |
100 | static int siop_stat_intr_xferdisc = 0; |
101 | static int siop_stat_intr_lunresel = 0; |
102 | static int siop_stat_intr_qfull = 0; |
103 | void siop_printstats(void); |
104 | #define INCSTAT(x) x++ |
105 | #else |
106 | #define INCSTAT(x) |
107 | #endif |
108 | |
109 | static inline void siop_script_sync(struct siop_softc *, int); |
110 | static inline void |
111 | siop_script_sync(struct siop_softc *sc, int ops) |
112 | { |
113 | |
114 | if ((sc->sc_c.features & SF_CHIP_RAM) == 0) |
115 | bus_dmamap_sync(sc->sc_c.sc_dmat, sc->sc_c.sc_scriptdma, 0, |
116 | PAGE_SIZE, ops); |
117 | } |
118 | |
119 | static inline uint32_t siop_script_read(struct siop_softc *, u_int); |
120 | static inline uint32_t |
121 | siop_script_read(struct siop_softc *sc, u_int offset) |
122 | { |
123 | |
124 | if (sc->sc_c.features & SF_CHIP_RAM) { |
125 | return bus_space_read_4(sc->sc_c.sc_ramt, sc->sc_c.sc_ramh, |
126 | offset * 4); |
127 | } else { |
128 | return siop_ctoh32(&sc->sc_c, sc->sc_c.sc_script[offset]); |
129 | } |
130 | } |
131 | |
132 | static inline void siop_script_write(struct siop_softc *, u_int, |
133 | uint32_t); |
134 | static inline void |
135 | siop_script_write(struct siop_softc *sc, u_int offset, uint32_t val) |
136 | { |
137 | |
138 | if (sc->sc_c.features & SF_CHIP_RAM) { |
139 | bus_space_write_4(sc->sc_c.sc_ramt, sc->sc_c.sc_ramh, |
140 | offset * 4, val); |
141 | } else { |
142 | sc->sc_c.sc_script[offset] = siop_htoc32(&sc->sc_c, val); |
143 | } |
144 | } |
145 | |
146 | void |
147 | siop_attach(struct siop_softc *sc) |
148 | { |
149 | |
150 | if (siop_common_attach(&sc->sc_c) != 0) |
151 | return; |
152 | |
153 | TAILQ_INIT(&sc->free_list); |
154 | TAILQ_INIT(&sc->cmds); |
155 | TAILQ_INIT(&sc->lunsw_list); |
156 | sc->sc_currschedslot = 0; |
157 | #ifdef SIOP_DEBUG |
158 | printf("%s: script size = %d, PHY addr=0x%x, VIRT=%p\n" , |
159 | device_xname(sc->sc_c.sc_dev), (int)sizeof(siop_script), |
160 | (uint32_t)sc->sc_c.sc_scriptaddr, sc->sc_c.sc_script); |
161 | #endif |
162 | |
163 | sc->sc_c.sc_adapt.adapt_max_periph = SIOP_NTAG - 1; |
164 | sc->sc_c.sc_adapt.adapt_request = siop_scsipi_request; |
165 | |
166 | /* Do a bus reset, so that devices fall back to narrow/async */ |
167 | siop_resetbus(&sc->sc_c); |
168 | /* |
169 | * siop_reset() will reset the chip, thus clearing pending interrupts |
170 | */ |
171 | siop_reset(sc); |
172 | #ifdef SIOP_DUMP_SCRIPT |
173 | siop_dump_script(sc); |
174 | #endif |
175 | |
176 | config_found(sc->sc_c.sc_dev, &sc->sc_c.sc_chan, scsiprint); |
177 | } |
178 | |
179 | void |
180 | siop_reset(struct siop_softc *sc) |
181 | { |
182 | int i, j; |
183 | struct siop_lunsw *lunsw; |
184 | |
185 | siop_common_reset(&sc->sc_c); |
186 | |
187 | /* copy and patch the script */ |
188 | if (sc->sc_c.features & SF_CHIP_RAM) { |
189 | bus_space_write_region_4(sc->sc_c.sc_ramt, sc->sc_c.sc_ramh, 0, |
190 | siop_script, __arraycount(siop_script)); |
191 | for (j = 0; j < __arraycount(E_abs_msgin_Used); j++) { |
192 | bus_space_write_4(sc->sc_c.sc_ramt, sc->sc_c.sc_ramh, |
193 | E_abs_msgin_Used[j] * 4, |
194 | sc->sc_c.sc_scriptaddr + Ent_msgin_space); |
195 | } |
196 | if (sc->sc_c.features & SF_CHIP_LED0) { |
197 | bus_space_write_region_4(sc->sc_c.sc_ramt, |
198 | sc->sc_c.sc_ramh, |
199 | Ent_led_on1, siop_led_on, |
200 | __arraycount(siop_led_on)); |
201 | bus_space_write_region_4(sc->sc_c.sc_ramt, |
202 | sc->sc_c.sc_ramh, |
203 | Ent_led_on2, siop_led_on, |
204 | __arraycount(siop_led_on)); |
205 | bus_space_write_region_4(sc->sc_c.sc_ramt, |
206 | sc->sc_c.sc_ramh, |
207 | Ent_led_off, siop_led_off, |
208 | __arraycount(siop_led_off)); |
209 | } |
210 | } else { |
211 | for (j = 0; j < __arraycount(siop_script); j++) { |
212 | sc->sc_c.sc_script[j] = |
213 | siop_htoc32(&sc->sc_c, siop_script[j]); |
214 | } |
215 | for (j = 0; j < __arraycount(E_abs_msgin_Used); j++) { |
216 | sc->sc_c.sc_script[E_abs_msgin_Used[j]] = |
217 | siop_htoc32(&sc->sc_c, |
218 | sc->sc_c.sc_scriptaddr + Ent_msgin_space); |
219 | } |
220 | if (sc->sc_c.features & SF_CHIP_LED0) { |
221 | for (j = 0; j < __arraycount(siop_led_on); j++) |
222 | sc->sc_c.sc_script[ |
223 | Ent_led_on1 / sizeof(siop_led_on[0]) + j |
224 | ] = siop_htoc32(&sc->sc_c, siop_led_on[j]); |
225 | for (j = 0; j < __arraycount(siop_led_on); j++) |
226 | sc->sc_c.sc_script[ |
227 | Ent_led_on2 / sizeof(siop_led_on[0]) + j |
228 | ] = siop_htoc32(&sc->sc_c, siop_led_on[j]); |
229 | for (j = 0; j < __arraycount(siop_led_off); j++) |
230 | sc->sc_c.sc_script[ |
231 | Ent_led_off / sizeof(siop_led_off[0]) + j |
232 | ] = siop_htoc32(&sc->sc_c, siop_led_off[j]); |
233 | } |
234 | } |
235 | sc->script_free_lo = __arraycount(siop_script); |
236 | sc->script_free_hi = sc->sc_c.ram_size / 4; |
237 | sc->sc_ntargets = 0; |
238 | |
239 | /* free used and unused lun switches */ |
240 | while((lunsw = TAILQ_FIRST(&sc->lunsw_list)) != NULL) { |
241 | #ifdef SIOP_DEBUG |
242 | printf("%s: free lunsw at offset %d\n" , |
243 | device_xname(sc->sc_c.sc_dev), lunsw->lunsw_off); |
244 | #endif |
245 | TAILQ_REMOVE(&sc->lunsw_list, lunsw, next); |
246 | free(lunsw, M_DEVBUF); |
247 | } |
248 | TAILQ_INIT(&sc->lunsw_list); |
249 | /* restore reselect switch */ |
250 | for (i = 0; i < sc->sc_c.sc_chan.chan_ntargets; i++) { |
251 | struct siop_target *target; |
252 | if (sc->sc_c.targets[i] == NULL) |
253 | continue; |
254 | #ifdef SIOP_DEBUG |
255 | printf("%s: restore sw for target %d\n" , |
256 | device_xname(sc->sc_c.sc_dev), i); |
257 | #endif |
258 | target = (struct siop_target *)sc->sc_c.targets[i]; |
259 | free(target->lunsw, M_DEVBUF); |
260 | target->lunsw = siop_get_lunsw(sc); |
261 | if (target->lunsw == NULL) { |
262 | aprint_error_dev(sc->sc_c.sc_dev, |
263 | "can't alloc lunsw for target %d\n" , i); |
264 | break; |
265 | } |
266 | siop_add_reselsw(sc, i); |
267 | } |
268 | |
269 | /* start script */ |
270 | if ((sc->sc_c.features & SF_CHIP_RAM) == 0) { |
271 | bus_dmamap_sync(sc->sc_c.sc_dmat, sc->sc_c.sc_scriptdma, 0, |
272 | PAGE_SIZE, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); |
273 | } |
274 | bus_space_write_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_DSP, |
275 | sc->sc_c.sc_scriptaddr + Ent_reselect); |
276 | } |
277 | |
278 | #if 0 |
279 | #define CALL_SCRIPT(ent) do { \ |
280 | printf ("start script DSA 0x%lx DSP 0x%lx\n", \ |
281 | siop_cmd->cmd_c.dsa, \ |
282 | sc->sc_c.sc_scriptaddr + ent); \ |
283 | bus_space_write_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, \ |
284 | SIOP_DSP, sc->sc_c.sc_scriptaddr + ent); \ |
285 | } while (/* CONSTCOND */0) |
286 | #else |
287 | #define CALL_SCRIPT(ent) do { \ |
288 | bus_space_write_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, \ |
289 | SIOP_DSP, sc->sc_c.sc_scriptaddr + ent); \ |
290 | } while (/* CONSTCOND */0) |
291 | #endif |
292 | |
293 | int |
294 | siop_intr(void *v) |
295 | { |
296 | struct siop_softc *sc = v; |
297 | struct siop_target *siop_target; |
298 | struct siop_cmd *siop_cmd; |
299 | struct siop_lun *siop_lun; |
300 | struct scsipi_xfer *xs; |
301 | int istat, sist, sstat1, dstat = 0; /* XXX: gcc */ |
302 | uint32_t irqcode; |
303 | int need_reset = 0; |
304 | int offset, target, lun, tag; |
305 | bus_addr_t dsa; |
306 | struct siop_cbd *cbdp; |
307 | int freetarget = 0; |
308 | int restart = 0; |
309 | |
310 | istat = bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_ISTAT); |
311 | if ((istat & (ISTAT_INTF | ISTAT_DIP | ISTAT_SIP)) == 0) |
312 | return 0; |
313 | INCSTAT(siop_stat_intr); |
314 | if (istat & ISTAT_INTF) { |
315 | printf("INTRF\n" ); |
316 | bus_space_write_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, |
317 | SIOP_ISTAT, ISTAT_INTF); |
318 | } |
319 | if ((istat &(ISTAT_DIP | ISTAT_SIP | ISTAT_ABRT)) == |
320 | (ISTAT_DIP | ISTAT_ABRT)) { |
321 | /* clear abort */ |
322 | bus_space_write_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, |
323 | SIOP_ISTAT, 0); |
324 | } |
325 | /* use DSA to find the current siop_cmd */ |
326 | siop_cmd = NULL; |
327 | dsa = bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_DSA); |
328 | TAILQ_FOREACH(cbdp, &sc->cmds, next) { |
329 | if (dsa >= cbdp->xferdma->dm_segs[0].ds_addr && |
330 | dsa < cbdp->xferdma->dm_segs[0].ds_addr + PAGE_SIZE) { |
331 | dsa -= cbdp->xferdma->dm_segs[0].ds_addr; |
332 | siop_cmd = &cbdp->cmds[dsa / sizeof(struct siop_xfer)]; |
333 | siop_table_sync(siop_cmd, |
334 | BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); |
335 | break; |
336 | } |
337 | } |
338 | if (siop_cmd) { |
339 | xs = siop_cmd->cmd_c.xs; |
340 | siop_target = (struct siop_target *)siop_cmd->cmd_c.siop_target; |
341 | target = siop_cmd->cmd_c.xs->xs_periph->periph_target; |
342 | lun = siop_cmd->cmd_c.xs->xs_periph->periph_lun; |
343 | tag = siop_cmd->cmd_c.tag; |
344 | siop_lun = siop_target->siop_lun[lun]; |
345 | #ifdef DIAGNOSTIC |
346 | if (siop_cmd->cmd_c.status != CMDST_ACTIVE) { |
347 | printf("siop_cmd (lun %d) for DSA 0x%x " |
348 | "not active (%d)\n" , lun, (u_int)dsa, |
349 | siop_cmd->cmd_c.status); |
350 | xs = NULL; |
351 | siop_target = NULL; |
352 | target = -1; |
353 | lun = -1; |
354 | tag = -1; |
355 | siop_lun = NULL; |
356 | siop_cmd = NULL; |
357 | } else if (siop_lun->siop_tag[tag].active != siop_cmd) { |
358 | printf("siop_cmd (lun %d tag %d) not in siop_lun " |
359 | "active (%p != %p)\n" , lun, tag, siop_cmd, |
360 | siop_lun->siop_tag[tag].active); |
361 | } |
362 | #endif |
363 | } else { |
364 | xs = NULL; |
365 | siop_target = NULL; |
366 | target = -1; |
367 | lun = -1; |
368 | tag = -1; |
369 | siop_lun = NULL; |
370 | } |
371 | if (istat & ISTAT_DIP) { |
372 | dstat = bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, |
373 | SIOP_DSTAT); |
374 | if (dstat & DSTAT_ABRT) { |
375 | /* was probably generated by a bus reset IOCTL */ |
376 | if ((dstat & DSTAT_DFE) == 0) |
377 | siop_clearfifo(&sc->sc_c); |
378 | goto reset; |
379 | } |
380 | if (dstat & DSTAT_SSI) { |
381 | printf("single step dsp 0x%08x dsa 0x08%x\n" , |
382 | (int)(bus_space_read_4(sc->sc_c.sc_rt, |
383 | sc->sc_c.sc_rh, SIOP_DSP) - |
384 | sc->sc_c.sc_scriptaddr), |
385 | bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, |
386 | SIOP_DSA)); |
387 | if ((dstat & ~(DSTAT_DFE | DSTAT_SSI)) == 0 && |
388 | (istat & ISTAT_SIP) == 0) { |
389 | bus_space_write_1(sc->sc_c.sc_rt, |
390 | sc->sc_c.sc_rh, SIOP_DCNTL, |
391 | bus_space_read_1(sc->sc_c.sc_rt, |
392 | sc->sc_c.sc_rh, SIOP_DCNTL) | DCNTL_STD); |
393 | } |
394 | return 1; |
395 | } |
396 | |
397 | if (dstat & ~(DSTAT_SIR | DSTAT_DFE | DSTAT_SSI)) { |
398 | printf("DMA IRQ:" ); |
399 | if (dstat & DSTAT_IID) |
400 | printf(" Illegal instruction" ); |
401 | if (dstat & DSTAT_BF) |
402 | printf(" bus fault" ); |
403 | if (dstat & DSTAT_MDPE) |
404 | printf(" parity" ); |
405 | if (dstat & DSTAT_DFE) |
406 | printf(" DMA fifo empty" ); |
407 | else |
408 | siop_clearfifo(&sc->sc_c); |
409 | printf(", DSP=0x%x DSA=0x%x: " , |
410 | (int)(bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, |
411 | SIOP_DSP) - sc->sc_c.sc_scriptaddr), |
412 | bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_DSA)); |
413 | if (siop_cmd) |
414 | printf("last msg_in=0x%x status=0x%x\n" , |
415 | siop_cmd->cmd_tables->msg_in[0], |
416 | siop_ctoh32(&sc->sc_c, |
417 | siop_cmd->cmd_tables->status)); |
418 | else |
419 | aprint_error_dev(sc->sc_c.sc_dev, |
420 | "current DSA invalid\n" ); |
421 | need_reset = 1; |
422 | } |
423 | } |
424 | if (istat & ISTAT_SIP) { |
425 | if (istat & ISTAT_DIP) |
426 | delay(10); |
427 | /* |
428 | * Can't read sist0 & sist1 independently, or we have to |
429 | * insert delay |
430 | */ |
431 | sist = bus_space_read_2(sc->sc_c.sc_rt, sc->sc_c.sc_rh, |
432 | SIOP_SIST0); |
433 | sstat1 = bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, |
434 | SIOP_SSTAT1); |
435 | #ifdef SIOP_DEBUG_INTR |
436 | printf("scsi interrupt, sist=0x%x sstat1=0x%x " |
437 | "DSA=0x%x DSP=0x%lx\n" , sist, |
438 | bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, |
439 | SIOP_SSTAT1), |
440 | bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_DSA), |
441 | (u_long)(bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, |
442 | SIOP_DSP) - |
443 | sc->sc_c.sc_scriptaddr)); |
444 | #endif |
445 | if (sist & SIST0_RST) { |
446 | siop_handle_reset(sc); |
447 | /* no table to flush here */ |
448 | return 1; |
449 | } |
450 | if (sist & SIST0_SGE) { |
451 | if (siop_cmd) |
452 | scsipi_printaddr(xs->xs_periph); |
453 | else |
454 | printf("%s:" , device_xname(sc->sc_c.sc_dev)); |
455 | printf("scsi gross error\n" ); |
456 | goto reset; |
457 | } |
458 | if ((sist & SIST0_MA) && need_reset == 0) { |
459 | if (siop_cmd) { |
460 | int scratcha0; |
461 | dstat = bus_space_read_1(sc->sc_c.sc_rt, |
462 | sc->sc_c.sc_rh, SIOP_DSTAT); |
463 | /* |
464 | * first restore DSA, in case we were in a S/G |
465 | * operation. |
466 | */ |
467 | bus_space_write_4(sc->sc_c.sc_rt, |
468 | sc->sc_c.sc_rh, |
469 | SIOP_DSA, siop_cmd->cmd_c.dsa); |
470 | scratcha0 = bus_space_read_1(sc->sc_c.sc_rt, |
471 | sc->sc_c.sc_rh, SIOP_SCRATCHA); |
472 | switch (sstat1 & SSTAT1_PHASE_MASK) { |
473 | case SSTAT1_PHASE_STATUS: |
474 | /* |
475 | * previous phase may be aborted for any reason |
476 | * ( for example, the target has less data to |
477 | * transfer than requested). Compute resid and |
478 | * just go to status, the command should |
479 | * terminate. |
480 | */ |
481 | INCSTAT(siop_stat_intr_shortxfer); |
482 | if (scratcha0 & A_flag_data) |
483 | siop_ma(&siop_cmd->cmd_c); |
484 | else if ((dstat & DSTAT_DFE) == 0) |
485 | siop_clearfifo(&sc->sc_c); |
486 | CALL_SCRIPT(Ent_status); |
487 | return 1; |
488 | case SSTAT1_PHASE_MSGIN: |
489 | /* |
490 | * target may be ready to disconnect |
491 | * Compute resid which would be used later |
492 | * if a save data pointer is needed. |
493 | */ |
494 | INCSTAT(siop_stat_intr_xferdisc); |
495 | if (scratcha0 & A_flag_data) |
496 | siop_ma(&siop_cmd->cmd_c); |
497 | else if ((dstat & DSTAT_DFE) == 0) |
498 | siop_clearfifo(&sc->sc_c); |
499 | bus_space_write_1(sc->sc_c.sc_rt, |
500 | sc->sc_c.sc_rh, SIOP_SCRATCHA, |
501 | scratcha0 & ~A_flag_data); |
502 | CALL_SCRIPT(Ent_msgin); |
503 | return 1; |
504 | } |
505 | aprint_error_dev(sc->sc_c.sc_dev, |
506 | "unexpected phase mismatch %d\n" , |
507 | sstat1 & SSTAT1_PHASE_MASK); |
508 | } else { |
509 | aprint_error_dev(sc->sc_c.sc_dev, |
510 | "phase mismatch without command\n" ); |
511 | } |
512 | need_reset = 1; |
513 | } |
514 | if (sist & SIST0_PAR) { |
515 | /* parity error, reset */ |
516 | if (siop_cmd) |
517 | scsipi_printaddr(xs->xs_periph); |
518 | else |
519 | printf("%s:" , device_xname(sc->sc_c.sc_dev)); |
520 | printf("parity error\n" ); |
521 | goto reset; |
522 | } |
523 | if ((sist & (SIST1_STO << 8)) && need_reset == 0) { |
524 | /* selection time out, assume there's no device here */ |
525 | if (siop_cmd) { |
526 | siop_cmd->cmd_c.status = CMDST_DONE; |
527 | xs->error = XS_SELTIMEOUT; |
528 | freetarget = 1; |
529 | goto end; |
530 | } else { |
531 | aprint_error_dev(sc->sc_c.sc_dev, |
532 | "selection timeout without " |
533 | "command\n" ); |
534 | need_reset = 1; |
535 | } |
536 | } |
537 | if (sist & SIST0_UDC) { |
538 | /* |
539 | * unexpected disconnect. Usually the target signals |
540 | * a fatal condition this way. Attempt to get sense. |
541 | */ |
542 | if (siop_cmd) { |
543 | siop_cmd->cmd_tables->status = |
544 | siop_htoc32(&sc->sc_c, SCSI_CHECK); |
545 | goto end; |
546 | } |
547 | aprint_error_dev(sc->sc_c.sc_dev, |
548 | "unexpected disconnect without " |
549 | "command\n" ); |
550 | goto reset; |
551 | } |
552 | if (sist & (SIST1_SBMC << 8)) { |
553 | /* SCSI bus mode change */ |
554 | if (siop_modechange(&sc->sc_c) == 0 || need_reset == 1) |
555 | goto reset; |
556 | if ((istat & ISTAT_DIP) && (dstat & DSTAT_SIR)) { |
557 | /* |
558 | * we have a script interrupt, it will |
559 | * restart the script. |
560 | */ |
561 | goto scintr; |
562 | } |
563 | /* |
564 | * else we have to restart it ourselve, at the |
565 | * interrupted instruction. |
566 | */ |
567 | bus_space_write_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, |
568 | SIOP_DSP, |
569 | bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, |
570 | SIOP_DSP) - 8); |
571 | return 1; |
572 | } |
573 | /* Else it's an unhandled exception (for now). */ |
574 | aprint_error_dev(sc->sc_c.sc_dev, |
575 | "unhandled scsi interrupt, sist=0x%x sstat1=0x%x " |
576 | "DSA=0x%x DSP=0x%x\n" , sist, |
577 | bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, |
578 | SIOP_SSTAT1), |
579 | bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_DSA), |
580 | (int)(bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, |
581 | SIOP_DSP) - sc->sc_c.sc_scriptaddr)); |
582 | if (siop_cmd) { |
583 | siop_cmd->cmd_c.status = CMDST_DONE; |
584 | xs->error = XS_SELTIMEOUT; |
585 | goto end; |
586 | } |
587 | need_reset = 1; |
588 | } |
589 | if (need_reset) { |
590 | reset: |
591 | /* fatal error, reset the bus */ |
592 | siop_resetbus(&sc->sc_c); |
593 | /* no table to flush here */ |
594 | return 1; |
595 | } |
596 | |
597 | scintr: |
598 | if ((istat & ISTAT_DIP) && (dstat & DSTAT_SIR)) { /* script interrupt */ |
599 | irqcode = bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, |
600 | SIOP_DSPS); |
601 | #ifdef SIOP_DEBUG_INTR |
602 | printf("script interrupt 0x%x\n" , irqcode); |
603 | #endif |
604 | /* |
605 | * no command, or an inactive command is only valid for a |
606 | * reselect interrupt |
607 | */ |
608 | if ((irqcode & 0x80) == 0) { |
609 | if (siop_cmd == NULL) { |
610 | aprint_error_dev(sc->sc_c.sc_dev, |
611 | "script interrupt (0x%x) with " |
612 | "invalid DSA !!!\n" , |
613 | irqcode); |
614 | goto reset; |
615 | } |
616 | if (siop_cmd->cmd_c.status != CMDST_ACTIVE) { |
617 | aprint_error_dev(sc->sc_c.sc_dev, |
618 | "command with invalid status " |
619 | "(IRQ code 0x%x current status %d) !\n" , |
620 | irqcode, siop_cmd->cmd_c.status); |
621 | xs = NULL; |
622 | } |
623 | } |
624 | switch(irqcode) { |
625 | case A_int_err: |
626 | printf("error, DSP=0x%x\n" , |
627 | (int)(bus_space_read_4(sc->sc_c.sc_rt, |
628 | sc->sc_c.sc_rh, SIOP_DSP) - |
629 | sc->sc_c.sc_scriptaddr)); |
630 | if (xs) { |
631 | xs->error = XS_SELTIMEOUT; |
632 | goto end; |
633 | } else { |
634 | goto reset; |
635 | } |
636 | case A_int_reseltarg: |
637 | aprint_error_dev(sc->sc_c.sc_dev, |
638 | "reselect with invalid target\n" ); |
639 | goto reset; |
640 | case A_int_resellun: |
641 | INCSTAT(siop_stat_intr_lunresel); |
642 | target = bus_space_read_1(sc->sc_c.sc_rt, |
643 | sc->sc_c.sc_rh, SIOP_SCRATCHA) & 0xf; |
644 | lun = bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, |
645 | SIOP_SCRATCHA + 1); |
646 | tag = bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, |
647 | SIOP_SCRATCHA + 2); |
648 | siop_target = |
649 | (struct siop_target *)sc->sc_c.targets[target]; |
650 | if (siop_target == NULL) { |
651 | printf("%s: reselect with invalid target %d\n" , |
652 | device_xname(sc->sc_c.sc_dev), target); |
653 | goto reset; |
654 | } |
655 | siop_lun = siop_target->siop_lun[lun]; |
656 | if (siop_lun == NULL) { |
657 | printf("%s: target %d reselect with invalid " |
658 | "lun %d\n" , device_xname(sc->sc_c.sc_dev), |
659 | target, lun); |
660 | goto reset; |
661 | } |
662 | if (siop_lun->siop_tag[tag].active == NULL) { |
663 | printf("%s: target %d lun %d tag %d reselect " |
664 | "without command\n" , |
665 | device_xname(sc->sc_c.sc_dev), |
666 | target, lun, tag); |
667 | goto reset; |
668 | } |
669 | siop_cmd = siop_lun->siop_tag[tag].active; |
670 | bus_space_write_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, |
671 | SIOP_DSP, siop_cmd->cmd_c.dsa + |
672 | sizeof(struct siop_common_xfer) + |
673 | Ent_ldsa_reload_dsa); |
674 | siop_table_sync(siop_cmd, BUS_DMASYNC_PREWRITE); |
675 | return 1; |
676 | case A_int_reseltag: |
677 | printf("%s: reselect with invalid tag\n" , |
678 | device_xname(sc->sc_c.sc_dev)); |
679 | goto reset; |
680 | case A_int_msgin: |
681 | { |
682 | int msgin = bus_space_read_1(sc->sc_c.sc_rt, |
683 | sc->sc_c.sc_rh, SIOP_SFBR); |
684 | |
685 | if (msgin == MSG_MESSAGE_REJECT) { |
686 | int msg, extmsg; |
687 | if (siop_cmd->cmd_tables->msg_out[0] & 0x80) { |
688 | /* |
689 | * message was part of a identify + |
690 | * something else. Identify shouldn't |
691 | * have been rejected. |
692 | */ |
693 | msg = |
694 | siop_cmd->cmd_tables->msg_out[1]; |
695 | extmsg = |
696 | siop_cmd->cmd_tables->msg_out[3]; |
697 | } else { |
698 | msg = siop_cmd->cmd_tables->msg_out[0]; |
699 | extmsg = |
700 | siop_cmd->cmd_tables->msg_out[2]; |
701 | } |
702 | if (msg == MSG_MESSAGE_REJECT) { |
703 | /* MSG_REJECT for a MSG_REJECT !*/ |
704 | if (xs) |
705 | scsipi_printaddr(xs->xs_periph); |
706 | else |
707 | printf("%s: " , device_xname( |
708 | sc->sc_c.sc_dev)); |
709 | printf("our reject message was " |
710 | "rejected\n" ); |
711 | goto reset; |
712 | } |
713 | if (msg == MSG_EXTENDED && |
714 | extmsg == MSG_EXT_WDTR) { |
715 | /* WDTR rejected, initiate sync */ |
716 | if ((siop_target->target_c.flags & |
717 | TARF_SYNC) == 0) { |
718 | siop_target->target_c.status = |
719 | TARST_OK; |
720 | siop_update_xfer_mode(&sc->sc_c, |
721 | target); |
722 | /* no table to flush here */ |
723 | CALL_SCRIPT(Ent_msgin_ack); |
724 | return 1; |
725 | } |
726 | siop_target->target_c.status = |
727 | TARST_SYNC_NEG; |
728 | siop_sdtr_msg(&siop_cmd->cmd_c, 0, |
729 | sc->sc_c.st_minsync, |
730 | sc->sc_c.maxoff); |
731 | siop_table_sync(siop_cmd, |
732 | BUS_DMASYNC_PREREAD | |
733 | BUS_DMASYNC_PREWRITE); |
734 | CALL_SCRIPT(Ent_send_msgout); |
735 | return 1; |
736 | } else if (msg == MSG_EXTENDED && |
737 | extmsg == MSG_EXT_SDTR) { |
738 | /* sync rejected */ |
739 | siop_target->target_c.offset = 0; |
740 | siop_target->target_c.period = 0; |
741 | siop_target->target_c.status = TARST_OK; |
742 | siop_update_xfer_mode(&sc->sc_c, |
743 | target); |
744 | /* no table to flush here */ |
745 | CALL_SCRIPT(Ent_msgin_ack); |
746 | return 1; |
747 | } else if (msg == MSG_SIMPLE_Q_TAG || |
748 | msg == MSG_HEAD_OF_Q_TAG || |
749 | msg == MSG_ORDERED_Q_TAG) { |
750 | if (siop_handle_qtag_reject( |
751 | siop_cmd) == -1) |
752 | goto reset; |
753 | CALL_SCRIPT(Ent_msgin_ack); |
754 | return 1; |
755 | } |
756 | if (xs) |
757 | scsipi_printaddr(xs->xs_periph); |
758 | else |
759 | printf("%s: " , |
760 | device_xname(sc->sc_c.sc_dev)); |
761 | if (msg == MSG_EXTENDED) { |
762 | printf("scsi message reject, extended " |
763 | "message sent was 0x%x\n" , extmsg); |
764 | } else { |
765 | printf("scsi message reject, message " |
766 | "sent was 0x%x\n" , msg); |
767 | } |
768 | /* no table to flush here */ |
769 | CALL_SCRIPT(Ent_msgin_ack); |
770 | return 1; |
771 | } |
772 | if (msgin == MSG_IGN_WIDE_RESIDUE) { |
773 | /* use the extmsgdata table to get the second byte */ |
774 | siop_cmd->cmd_tables->t_extmsgdata.count = |
775 | siop_htoc32(&sc->sc_c, 1); |
776 | siop_table_sync(siop_cmd, |
777 | BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); |
778 | CALL_SCRIPT(Ent_get_extmsgdata); |
779 | return 1; |
780 | } |
781 | if (xs) |
782 | scsipi_printaddr(xs->xs_periph); |
783 | else |
784 | printf("%s: " , device_xname(sc->sc_c.sc_dev)); |
785 | printf("unhandled message 0x%x\n" , |
786 | siop_cmd->cmd_tables->msg_in[0]); |
787 | siop_cmd->cmd_tables->msg_out[0] = MSG_MESSAGE_REJECT; |
788 | siop_cmd->cmd_tables->t_msgout.count = |
789 | siop_htoc32(&sc->sc_c, 1); |
790 | siop_table_sync(siop_cmd, |
791 | BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); |
792 | CALL_SCRIPT(Ent_send_msgout); |
793 | return 1; |
794 | } |
795 | case A_int_extmsgin: |
796 | #ifdef SIOP_DEBUG_INTR |
797 | printf("extended message: msg 0x%x len %d\n" , |
798 | siop_cmd->cmd_tables->msg_in[2], |
799 | siop_cmd->cmd_tables->msg_in[1]); |
800 | #endif |
801 | if (siop_cmd->cmd_tables->msg_in[1] > |
802 | sizeof(siop_cmd->cmd_tables->msg_in) - 2) |
803 | aprint_error_dev(sc->sc_c.sc_dev, |
804 | "extended message too big (%d)\n" , |
805 | siop_cmd->cmd_tables->msg_in[1]); |
806 | siop_cmd->cmd_tables->t_extmsgdata.count = |
807 | siop_htoc32(&sc->sc_c, |
808 | siop_cmd->cmd_tables->msg_in[1] - 1); |
809 | siop_table_sync(siop_cmd, |
810 | BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); |
811 | CALL_SCRIPT(Ent_get_extmsgdata); |
812 | return 1; |
813 | case A_int_extmsgdata: |
814 | #ifdef SIOP_DEBUG_INTR |
815 | { |
816 | int i; |
817 | printf("extended message: 0x%x, data:" , |
818 | siop_cmd->cmd_tables->msg_in[2]); |
819 | for (i = 3; i < 2 + siop_cmd->cmd_tables->msg_in[1]; |
820 | i++) |
821 | printf(" 0x%x" , |
822 | siop_cmd->cmd_tables->msg_in[i]); |
823 | printf("\n" ); |
824 | } |
825 | #endif |
826 | if (siop_cmd->cmd_tables->msg_in[0] == |
827 | MSG_IGN_WIDE_RESIDUE) { |
828 | /* we got the second byte of MSG_IGN_WIDE_RESIDUE */ |
829 | if (siop_cmd->cmd_tables->msg_in[3] != 1) |
830 | printf("MSG_IGN_WIDE_RESIDUE: " |
831 | "bad len %d\n" , |
832 | siop_cmd->cmd_tables->msg_in[3]); |
833 | switch (siop_iwr(&siop_cmd->cmd_c)) { |
834 | case SIOP_NEG_MSGOUT: |
835 | siop_table_sync(siop_cmd, |
836 | BUS_DMASYNC_PREREAD | |
837 | BUS_DMASYNC_PREWRITE); |
838 | CALL_SCRIPT(Ent_send_msgout); |
839 | return(1); |
840 | case SIOP_NEG_ACK: |
841 | CALL_SCRIPT(Ent_msgin_ack); |
842 | return(1); |
843 | default: |
844 | panic("invalid retval from " |
845 | "siop_iwr()" ); |
846 | } |
847 | return(1); |
848 | } |
849 | if (siop_cmd->cmd_tables->msg_in[2] == MSG_EXT_WDTR) { |
850 | switch (siop_wdtr_neg(&siop_cmd->cmd_c)) { |
851 | case SIOP_NEG_MSGOUT: |
852 | siop_update_scntl3(sc, |
853 | siop_cmd->cmd_c.siop_target); |
854 | siop_table_sync(siop_cmd, |
855 | BUS_DMASYNC_PREREAD | |
856 | BUS_DMASYNC_PREWRITE); |
857 | CALL_SCRIPT(Ent_send_msgout); |
858 | return(1); |
859 | case SIOP_NEG_ACK: |
860 | siop_update_scntl3(sc, |
861 | siop_cmd->cmd_c.siop_target); |
862 | CALL_SCRIPT(Ent_msgin_ack); |
863 | return(1); |
864 | default: |
865 | panic("invalid retval from " |
866 | "siop_wdtr_neg()" ); |
867 | } |
868 | return(1); |
869 | } |
870 | if (siop_cmd->cmd_tables->msg_in[2] == MSG_EXT_SDTR) { |
871 | switch (siop_sdtr_neg(&siop_cmd->cmd_c)) { |
872 | case SIOP_NEG_MSGOUT: |
873 | siop_update_scntl3(sc, |
874 | siop_cmd->cmd_c.siop_target); |
875 | siop_table_sync(siop_cmd, |
876 | BUS_DMASYNC_PREREAD | |
877 | BUS_DMASYNC_PREWRITE); |
878 | CALL_SCRIPT(Ent_send_msgout); |
879 | return(1); |
880 | case SIOP_NEG_ACK: |
881 | siop_update_scntl3(sc, |
882 | siop_cmd->cmd_c.siop_target); |
883 | CALL_SCRIPT(Ent_msgin_ack); |
884 | return(1); |
885 | default: |
886 | panic("invalid retval from " |
887 | "siop_sdtr_neg()" ); |
888 | } |
889 | return(1); |
890 | } |
891 | /* send a message reject */ |
892 | siop_cmd->cmd_tables->msg_out[0] = MSG_MESSAGE_REJECT; |
893 | siop_cmd->cmd_tables->t_msgout.count = |
894 | siop_htoc32(&sc->sc_c, 1); |
895 | siop_table_sync(siop_cmd, |
896 | BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); |
897 | CALL_SCRIPT(Ent_send_msgout); |
898 | return 1; |
899 | case A_int_disc: |
900 | INCSTAT(siop_stat_intr_sdp); |
901 | offset = bus_space_read_1(sc->sc_c.sc_rt, |
902 | sc->sc_c.sc_rh, SIOP_SCRATCHA + 1); |
903 | #ifdef SIOP_DEBUG_DR |
904 | printf("disconnect offset %d\n" , offset); |
905 | #endif |
906 | siop_sdp(&siop_cmd->cmd_c, offset); |
907 | /* we start again with no offset */ |
908 | siop_cmd->saved_offset = SIOP_NOOFFSET; |
909 | siop_table_sync(siop_cmd, |
910 | BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); |
911 | CALL_SCRIPT(Ent_script_sched); |
912 | return 1; |
913 | case A_int_saveoffset: |
914 | INCSTAT(siop_stat_intr_saveoffset); |
915 | offset = bus_space_read_1(sc->sc_c.sc_rt, |
916 | sc->sc_c.sc_rh, SIOP_SCRATCHA + 1); |
917 | #ifdef SIOP_DEBUG_DR |
918 | printf("saveoffset offset %d\n" , offset); |
919 | #endif |
920 | siop_cmd->saved_offset = offset; |
921 | CALL_SCRIPT(Ent_script_sched); |
922 | return 1; |
923 | case A_int_resfail: |
924 | printf("reselect failed\n" ); |
925 | CALL_SCRIPT(Ent_script_sched); |
926 | return 1; |
927 | case A_int_done: |
928 | if (xs == NULL) { |
929 | printf("%s: done without command, DSA=0x%lx\n" , |
930 | device_xname(sc->sc_c.sc_dev), |
931 | (u_long)siop_cmd->cmd_c.dsa); |
932 | siop_cmd->cmd_c.status = CMDST_FREE; |
933 | CALL_SCRIPT(Ent_script_sched); |
934 | return 1; |
935 | } |
936 | #ifdef SIOP_DEBUG_INTR |
937 | printf("done, DSA=0x%lx target id 0x%x last msg " |
938 | "in=0x%x status=0x%x\n" , |
939 | (u_long)siop_cmd->cmd_c.dsa, |
940 | siop_ctoh32(&sc->sc_c, siop_cmd->cmd_tables->id), |
941 | siop_cmd->cmd_tables->msg_in[0], |
942 | siop_ctoh32(&sc->sc_c, |
943 | siop_cmd->cmd_tables->status)); |
944 | #endif |
945 | INCSTAT(siop_stat_intr_done); |
946 | /* update resid. */ |
947 | offset = bus_space_read_1(sc->sc_c.sc_rt, |
948 | sc->sc_c.sc_rh, SIOP_SCRATCHA + 1); |
949 | /* |
950 | * if we got a disconnect between the last data phase |
951 | * and the status phase, offset will be 0. In this |
952 | * case, siop_cmd->saved_offset will have the proper |
953 | * value if it got updated by the controller |
954 | */ |
955 | if (offset == 0 && |
956 | siop_cmd->saved_offset != SIOP_NOOFFSET) |
957 | offset = siop_cmd->saved_offset; |
958 | siop_update_resid(&siop_cmd->cmd_c, offset); |
959 | siop_cmd->cmd_c.status = CMDST_DONE; |
960 | goto end; |
961 | default: |
962 | printf("unknown irqcode %x\n" , irqcode); |
963 | if (xs) { |
964 | xs->error = XS_SELTIMEOUT; |
965 | goto end; |
966 | } |
967 | goto reset; |
968 | } |
969 | return 1; |
970 | } |
971 | /* |
972 | * We just should't get there, but on some KVM virtual hosts, |
973 | * we do - see PR 48277. |
974 | */ |
975 | printf("siop_intr: I shouldn't be there !\n" ); |
976 | return 1; |
977 | |
978 | end: |
979 | /* |
980 | * restart the script now if command completed properly |
981 | * Otherwise wait for siop_scsicmd_end(), we may need to cleanup the |
982 | * queue |
983 | */ |
984 | xs->status = siop_ctoh32(&sc->sc_c, siop_cmd->cmd_tables->status); |
985 | if (xs->status == SCSI_OK) |
986 | CALL_SCRIPT(Ent_script_sched); |
987 | else |
988 | restart = 1; |
989 | siop_lun->siop_tag[tag].active = NULL; |
990 | siop_scsicmd_end(siop_cmd); |
991 | if (freetarget && siop_target->target_c.status == TARST_PROBING) |
992 | siop_del_dev(sc, target, lun); |
993 | if (restart) |
994 | CALL_SCRIPT(Ent_script_sched); |
995 | if (sc->sc_flags & SCF_CHAN_NOSLOT) { |
996 | /* a command terminated, so we have free slots now */ |
997 | sc->sc_flags &= ~SCF_CHAN_NOSLOT; |
998 | scsipi_channel_thaw(&sc->sc_c.sc_chan, 1); |
999 | } |
1000 | |
1001 | return 1; |
1002 | } |
1003 | |
1004 | void |
1005 | siop_scsicmd_end(struct siop_cmd *siop_cmd) |
1006 | { |
1007 | struct scsipi_xfer *xs = siop_cmd->cmd_c.xs; |
1008 | struct siop_softc *sc = (struct siop_softc *)siop_cmd->cmd_c.siop_sc; |
1009 | |
1010 | switch(xs->status) { |
1011 | case SCSI_OK: |
1012 | xs->error = XS_NOERROR; |
1013 | break; |
1014 | case SCSI_BUSY: |
1015 | xs->error = XS_BUSY; |
1016 | break; |
1017 | case SCSI_CHECK: |
1018 | xs->error = XS_BUSY; |
1019 | /* remove commands in the queue and scheduler */ |
1020 | siop_unqueue(sc, xs->xs_periph->periph_target, |
1021 | xs->xs_periph->periph_lun); |
1022 | break; |
1023 | case SCSI_QUEUE_FULL: |
1024 | INCSTAT(siop_stat_intr_qfull); |
1025 | #ifdef SIOP_DEBUG |
1026 | printf("%s:%d:%d: queue full (tag %d)\n" , |
1027 | device_xname(sc->sc_c.sc_dev), |
1028 | xs->xs_periph->periph_target, |
1029 | xs->xs_periph->periph_lun, siop_cmd->cmd_c.tag); |
1030 | #endif |
1031 | xs->error = XS_BUSY; |
1032 | break; |
1033 | case SCSI_SIOP_NOCHECK: |
1034 | /* |
1035 | * don't check status, xs->error is already valid |
1036 | */ |
1037 | break; |
1038 | case SCSI_SIOP_NOSTATUS: |
1039 | /* |
1040 | * the status byte was not updated, cmd was |
1041 | * aborted |
1042 | */ |
1043 | xs->error = XS_SELTIMEOUT; |
1044 | break; |
1045 | default: |
1046 | scsipi_printaddr(xs->xs_periph); |
1047 | printf("invalid status code %d\n" , xs->status); |
1048 | xs->error = XS_DRIVER_STUFFUP; |
1049 | } |
1050 | if (xs->xs_control & (XS_CTL_DATA_IN | XS_CTL_DATA_OUT)) { |
1051 | bus_dmamap_sync(sc->sc_c.sc_dmat, siop_cmd->cmd_c.dmamap_data, |
1052 | 0, siop_cmd->cmd_c.dmamap_data->dm_mapsize, |
1053 | (xs->xs_control & XS_CTL_DATA_IN) ? |
1054 | BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE); |
1055 | bus_dmamap_unload(sc->sc_c.sc_dmat, |
1056 | siop_cmd->cmd_c.dmamap_data); |
1057 | } |
1058 | bus_dmamap_unload(sc->sc_c.sc_dmat, siop_cmd->cmd_c.dmamap_cmd); |
1059 | if ((xs->xs_control & XS_CTL_POLL) == 0) |
1060 | callout_stop(&xs->xs_callout); |
1061 | siop_cmd->cmd_c.status = CMDST_FREE; |
1062 | TAILQ_INSERT_TAIL(&sc->free_list, siop_cmd, next); |
1063 | #if 0 |
1064 | if (xs->resid != 0) |
1065 | printf("resid %d datalen %d\n" , xs->resid, xs->datalen); |
1066 | #endif |
1067 | scsipi_done(xs); |
1068 | } |
1069 | |
1070 | void |
1071 | siop_unqueue(struct siop_softc *sc, int target, int lun) |
1072 | { |
1073 | int slot, tag; |
1074 | struct siop_cmd *siop_cmd; |
1075 | struct siop_lun *siop_lun = |
1076 | ((struct siop_target *)sc->sc_c.targets[target])->siop_lun[lun]; |
1077 | |
1078 | /* first make sure to read valid data */ |
1079 | siop_script_sync(sc, BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); |
1080 | |
1081 | for (tag = 1; tag < SIOP_NTAG; tag++) { |
1082 | /* look for commands in the scheduler, not yet started */ |
1083 | if (siop_lun->siop_tag[tag].active == NULL) |
1084 | continue; |
1085 | siop_cmd = siop_lun->siop_tag[tag].active; |
1086 | for (slot = 0; slot <= sc->sc_currschedslot; slot++) { |
1087 | if (siop_script_read(sc, |
1088 | (Ent_script_sched_slot0 / 4) + slot * 2 + 1) == |
1089 | siop_cmd->cmd_c.dsa + |
1090 | sizeof(struct siop_common_xfer) + |
1091 | Ent_ldsa_select) |
1092 | break; |
1093 | } |
1094 | if (slot > sc->sc_currschedslot) |
1095 | continue; /* didn't find it */ |
1096 | if (siop_script_read(sc, |
1097 | (Ent_script_sched_slot0 / 4) + slot * 2) == 0x80000000) |
1098 | continue; /* already started */ |
1099 | /* clear the slot */ |
1100 | siop_script_write(sc, (Ent_script_sched_slot0 / 4) + slot * 2, |
1101 | 0x80000000); |
1102 | /* ask to requeue */ |
1103 | siop_cmd->cmd_c.xs->error = XS_REQUEUE; |
1104 | siop_cmd->cmd_c.xs->status = SCSI_SIOP_NOCHECK; |
1105 | siop_lun->siop_tag[tag].active = NULL; |
1106 | siop_scsicmd_end(siop_cmd); |
1107 | } |
1108 | /* update sc_currschedslot */ |
1109 | sc->sc_currschedslot = 0; |
1110 | for (slot = SIOP_NSLOTS - 1; slot >= 0; slot--) { |
1111 | if (siop_script_read(sc, |
1112 | (Ent_script_sched_slot0 / 4) + slot * 2) != 0x80000000) |
1113 | sc->sc_currschedslot = slot; |
1114 | } |
1115 | } |
1116 | |
1117 | /* |
1118 | * handle a rejected queue tag message: the command will run untagged, |
1119 | * has to adjust the reselect script. |
1120 | */ |
1121 | int |
1122 | siop_handle_qtag_reject(struct siop_cmd *siop_cmd) |
1123 | { |
1124 | struct siop_softc *sc = (struct siop_softc *)siop_cmd->cmd_c.siop_sc; |
1125 | int target = siop_cmd->cmd_c.xs->xs_periph->periph_target; |
1126 | int lun = siop_cmd->cmd_c.xs->xs_periph->periph_lun; |
1127 | int tag = siop_cmd->cmd_tables->msg_out[2]; |
1128 | struct siop_lun *siop_lun = |
1129 | ((struct siop_target*)sc->sc_c.targets[target])->siop_lun[lun]; |
1130 | |
1131 | #ifdef SIOP_DEBUG |
1132 | printf("%s:%d:%d: tag message %d (%d) rejected (status %d)\n" , |
1133 | device_xname(sc->sc_c.sc_dev), target, lun, tag, |
1134 | siop_cmd->cmd_c.tag, |
1135 | siop_cmd->cmd_c.status); |
1136 | #endif |
1137 | |
1138 | if (siop_lun->siop_tag[0].active != NULL) { |
1139 | printf("%s: untagged command already running for target %d " |
1140 | "lun %d (status %d)\n" , device_xname(sc->sc_c.sc_dev), |
1141 | target, lun, siop_lun->siop_tag[0].active->cmd_c.status); |
1142 | return -1; |
1143 | } |
1144 | /* clear tag slot */ |
1145 | siop_lun->siop_tag[tag].active = NULL; |
1146 | /* add command to non-tagged slot */ |
1147 | siop_lun->siop_tag[0].active = siop_cmd; |
1148 | siop_cmd->cmd_c.tag = 0; |
1149 | /* adjust reselect script if there is one */ |
1150 | if (siop_lun->siop_tag[0].reseloff > 0) { |
1151 | siop_script_write(sc, |
1152 | siop_lun->siop_tag[0].reseloff + 1, |
1153 | siop_cmd->cmd_c.dsa + sizeof(struct siop_common_xfer) + |
1154 | Ent_ldsa_reload_dsa); |
1155 | siop_table_sync(siop_cmd, BUS_DMASYNC_PREWRITE); |
1156 | } |
1157 | return 0; |
1158 | } |
1159 | |
1160 | /* |
1161 | * handle a bus reset: reset chip, unqueue all active commands, free all |
1162 | * target struct and report lossage to upper layer. |
1163 | * As the upper layer may requeue immediatly we have to first store |
1164 | * all active commands in a temporary queue. |
1165 | */ |
1166 | void |
1167 | siop_handle_reset(struct siop_softc *sc) |
1168 | { |
1169 | struct siop_cmd *siop_cmd; |
1170 | struct siop_lun *siop_lun; |
1171 | int target, lun, tag; |
1172 | |
1173 | /* |
1174 | * scsi bus reset. reset the chip and restart |
1175 | * the queue. Need to clean up all active commands |
1176 | */ |
1177 | printf("%s: scsi bus reset\n" , device_xname(sc->sc_c.sc_dev)); |
1178 | /* stop, reset and restart the chip */ |
1179 | siop_reset(sc); |
1180 | if (sc->sc_flags & SCF_CHAN_NOSLOT) { |
1181 | /* chip has been reset, all slots are free now */ |
1182 | sc->sc_flags &= ~SCF_CHAN_NOSLOT; |
1183 | scsipi_channel_thaw(&sc->sc_c.sc_chan, 1); |
1184 | } |
1185 | /* |
1186 | * Process all commands: first commands being executed |
1187 | */ |
1188 | for (target = 0; target < sc->sc_c.sc_chan.chan_ntargets; |
1189 | target++) { |
1190 | if (sc->sc_c.targets[target] == NULL) |
1191 | continue; |
1192 | for (lun = 0; lun < 8; lun++) { |
1193 | struct siop_target *siop_target = |
1194 | (struct siop_target *)sc->sc_c.targets[target]; |
1195 | siop_lun = siop_target->siop_lun[lun]; |
1196 | if (siop_lun == NULL) |
1197 | continue; |
1198 | for (tag = 0; tag < |
1199 | ((sc->sc_c.targets[target]->flags & TARF_TAG) ? |
1200 | SIOP_NTAG : 1); |
1201 | tag++) { |
1202 | siop_cmd = siop_lun->siop_tag[tag].active; |
1203 | if (siop_cmd == NULL) |
1204 | continue; |
1205 | scsipi_printaddr(siop_cmd->cmd_c.xs->xs_periph); |
1206 | printf("command with tag id %d reset\n" , tag); |
1207 | siop_cmd->cmd_c.xs->error = |
1208 | (siop_cmd->cmd_c.flags & CMDFL_TIMEOUT) ? |
1209 | XS_TIMEOUT : XS_RESET; |
1210 | siop_cmd->cmd_c.xs->status = SCSI_SIOP_NOCHECK; |
1211 | siop_lun->siop_tag[tag].active = NULL; |
1212 | siop_cmd->cmd_c.status = CMDST_DONE; |
1213 | siop_scsicmd_end(siop_cmd); |
1214 | } |
1215 | } |
1216 | sc->sc_c.targets[target]->status = TARST_ASYNC; |
1217 | sc->sc_c.targets[target]->flags &= ~TARF_ISWIDE; |
1218 | sc->sc_c.targets[target]->period = |
1219 | sc->sc_c.targets[target]->offset = 0; |
1220 | siop_update_xfer_mode(&sc->sc_c, target); |
1221 | } |
1222 | |
1223 | scsipi_async_event(&sc->sc_c.sc_chan, ASYNC_EVENT_RESET, NULL); |
1224 | } |
1225 | |
1226 | void |
1227 | siop_scsipi_request(struct scsipi_channel *chan, scsipi_adapter_req_t req, |
1228 | void *arg) |
1229 | { |
1230 | struct scsipi_xfer *xs; |
1231 | struct scsipi_periph *periph; |
1232 | struct siop_softc *sc = device_private(chan->chan_adapter->adapt_dev); |
1233 | struct siop_cmd *siop_cmd; |
1234 | struct siop_target *siop_target; |
1235 | int s, error, i; |
1236 | int target; |
1237 | int lun; |
1238 | |
1239 | switch (req) { |
1240 | case ADAPTER_REQ_RUN_XFER: |
1241 | xs = arg; |
1242 | periph = xs->xs_periph; |
1243 | target = periph->periph_target; |
1244 | lun = periph->periph_lun; |
1245 | |
1246 | s = splbio(); |
1247 | #ifdef SIOP_DEBUG_SCHED |
1248 | printf("starting cmd for %d:%d\n" , target, lun); |
1249 | #endif |
1250 | siop_cmd = TAILQ_FIRST(&sc->free_list); |
1251 | if (siop_cmd == NULL) { |
1252 | xs->error = XS_RESOURCE_SHORTAGE; |
1253 | scsipi_done(xs); |
1254 | splx(s); |
1255 | return; |
1256 | } |
1257 | TAILQ_REMOVE(&sc->free_list, siop_cmd, next); |
1258 | #ifdef DIAGNOSTIC |
1259 | if (siop_cmd->cmd_c.status != CMDST_FREE) |
1260 | panic("siop_scsicmd: new cmd not free" ); |
1261 | #endif |
1262 | siop_target = (struct siop_target *)sc->sc_c.targets[target]; |
1263 | if (siop_target == NULL) { |
1264 | #ifdef SIOP_DEBUG |
1265 | printf("%s: alloc siop_target for target %d\n" , |
1266 | device_xname(sc->sc_c.sc_dev), target); |
1267 | #endif |
1268 | sc->sc_c.targets[target] = |
1269 | malloc(sizeof(struct siop_target), |
1270 | M_DEVBUF, M_NOWAIT|M_ZERO); |
1271 | if (sc->sc_c.targets[target] == NULL) { |
1272 | aprint_error_dev(sc->sc_c.sc_dev, |
1273 | "can't malloc memory for " |
1274 | "target %d\n" , target); |
1275 | xs->error = XS_RESOURCE_SHORTAGE; |
1276 | scsipi_done(xs); |
1277 | TAILQ_INSERT_TAIL(&sc->free_list, |
1278 | siop_cmd, next); |
1279 | splx(s); |
1280 | return; |
1281 | } |
1282 | siop_target = |
1283 | (struct siop_target *)sc->sc_c.targets[target]; |
1284 | siop_target->target_c.status = TARST_PROBING; |
1285 | siop_target->target_c.flags = 0; |
1286 | siop_target->target_c.id = |
1287 | sc->sc_c.clock_div << 24; /* scntl3 */ |
1288 | siop_target->target_c.id |= target << 16; /* id */ |
1289 | /* siop_target->target_c.id |= 0x0 << 8; scxfer is 0 */ |
1290 | |
1291 | /* get a lun switch script */ |
1292 | siop_target->lunsw = siop_get_lunsw(sc); |
1293 | if (siop_target->lunsw == NULL) { |
1294 | aprint_error_dev(sc->sc_c.sc_dev, |
1295 | "can't alloc lunsw for target %d\n" , |
1296 | target); |
1297 | xs->error = XS_RESOURCE_SHORTAGE; |
1298 | scsipi_done(xs); |
1299 | TAILQ_INSERT_TAIL(&sc->free_list, |
1300 | siop_cmd, next); |
1301 | splx(s); |
1302 | return; |
1303 | } |
1304 | for (i=0; i < 8; i++) |
1305 | siop_target->siop_lun[i] = NULL; |
1306 | siop_add_reselsw(sc, target); |
1307 | } |
1308 | if (siop_target->siop_lun[lun] == NULL) { |
1309 | siop_target->siop_lun[lun] = |
1310 | malloc(sizeof(struct siop_lun), M_DEVBUF, |
1311 | M_NOWAIT|M_ZERO); |
1312 | if (siop_target->siop_lun[lun] == NULL) { |
1313 | aprint_error_dev(sc->sc_c.sc_dev, |
1314 | "can't alloc siop_lun for " |
1315 | "target %d lun %d\n" , |
1316 | target, lun); |
1317 | xs->error = XS_RESOURCE_SHORTAGE; |
1318 | scsipi_done(xs); |
1319 | TAILQ_INSERT_TAIL(&sc->free_list, |
1320 | siop_cmd, next); |
1321 | splx(s); |
1322 | return; |
1323 | } |
1324 | } |
1325 | siop_cmd->cmd_c.siop_target = sc->sc_c.targets[target]; |
1326 | siop_cmd->cmd_c.xs = xs; |
1327 | siop_cmd->cmd_c.flags = 0; |
1328 | siop_cmd->cmd_c.status = CMDST_READY; |
1329 | |
1330 | /* load the DMA maps */ |
1331 | error = bus_dmamap_load(sc->sc_c.sc_dmat, |
1332 | siop_cmd->cmd_c.dmamap_cmd, |
1333 | xs->cmd, xs->cmdlen, NULL, BUS_DMA_NOWAIT); |
1334 | if (error) { |
1335 | aprint_error_dev(sc->sc_c.sc_dev, |
1336 | "unable to load cmd DMA map: %d\n" , |
1337 | error); |
1338 | xs->error = (error == EAGAIN) ? |
1339 | XS_RESOURCE_SHORTAGE : XS_DRIVER_STUFFUP; |
1340 | scsipi_done(xs); |
1341 | siop_cmd->cmd_c.status = CMDST_FREE; |
1342 | TAILQ_INSERT_TAIL(&sc->free_list, siop_cmd, next); |
1343 | splx(s); |
1344 | return; |
1345 | } |
1346 | if (xs->xs_control & (XS_CTL_DATA_IN | XS_CTL_DATA_OUT)) { |
1347 | error = bus_dmamap_load(sc->sc_c.sc_dmat, |
1348 | siop_cmd->cmd_c.dmamap_data, xs->data, xs->datalen, |
1349 | NULL, BUS_DMA_NOWAIT | BUS_DMA_STREAMING | |
1350 | ((xs->xs_control & XS_CTL_DATA_IN) ? |
1351 | BUS_DMA_READ : BUS_DMA_WRITE)); |
1352 | if (error) { |
1353 | aprint_error_dev(sc->sc_c.sc_dev, |
1354 | "unable to load data DMA map: %d\n" , |
1355 | error); |
1356 | xs->error = (error == EAGAIN) ? |
1357 | XS_RESOURCE_SHORTAGE : XS_DRIVER_STUFFUP; |
1358 | scsipi_done(xs); |
1359 | bus_dmamap_unload(sc->sc_c.sc_dmat, |
1360 | siop_cmd->cmd_c.dmamap_cmd); |
1361 | siop_cmd->cmd_c.status = CMDST_FREE; |
1362 | TAILQ_INSERT_TAIL(&sc->free_list, |
1363 | siop_cmd, next); |
1364 | splx(s); |
1365 | return; |
1366 | } |
1367 | bus_dmamap_sync(sc->sc_c.sc_dmat, |
1368 | siop_cmd->cmd_c.dmamap_data, 0, |
1369 | siop_cmd->cmd_c.dmamap_data->dm_mapsize, |
1370 | (xs->xs_control & XS_CTL_DATA_IN) ? |
1371 | BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE); |
1372 | } |
1373 | bus_dmamap_sync(sc->sc_c.sc_dmat, siop_cmd->cmd_c.dmamap_cmd, 0, |
1374 | siop_cmd->cmd_c.dmamap_cmd->dm_mapsize, |
1375 | BUS_DMASYNC_PREWRITE); |
1376 | |
1377 | if (xs->xs_tag_type) { |
1378 | /* use tag_id + 1, tag 0 is reserved for untagged cmds*/ |
1379 | siop_cmd->cmd_c.tag = xs->xs_tag_id + 1; |
1380 | } else { |
1381 | siop_cmd->cmd_c.tag = 0; |
1382 | } |
1383 | siop_setuptables(&siop_cmd->cmd_c); |
1384 | siop_cmd->saved_offset = SIOP_NOOFFSET; |
1385 | siop_table_sync(siop_cmd, |
1386 | BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); |
1387 | siop_start(sc, siop_cmd); |
1388 | if (xs->xs_control & XS_CTL_POLL) { |
1389 | /* poll for command completion */ |
1390 | while ((xs->xs_status & XS_STS_DONE) == 0) { |
1391 | delay(1000); |
1392 | siop_intr(sc); |
1393 | } |
1394 | } |
1395 | splx(s); |
1396 | return; |
1397 | |
1398 | case ADAPTER_REQ_GROW_RESOURCES: |
1399 | #ifdef SIOP_DEBUG |
1400 | printf("%s grow resources (%d)\n" , |
1401 | device_xname(sc->sc_c.sc_dev), |
1402 | sc->sc_c.sc_adapt.adapt_openings); |
1403 | #endif |
1404 | siop_morecbd(sc); |
1405 | return; |
1406 | |
1407 | case ADAPTER_REQ_SET_XFER_MODE: |
1408 | { |
1409 | struct scsipi_xfer_mode *xm = arg; |
1410 | if (sc->sc_c.targets[xm->xm_target] == NULL) |
1411 | return; |
1412 | s = splbio(); |
1413 | if (xm->xm_mode & PERIPH_CAP_TQING) |
1414 | sc->sc_c.targets[xm->xm_target]->flags |= TARF_TAG; |
1415 | if ((xm->xm_mode & PERIPH_CAP_WIDE16) && |
1416 | (sc->sc_c.features & SF_BUS_WIDE)) |
1417 | sc->sc_c.targets[xm->xm_target]->flags |= TARF_WIDE; |
1418 | if (xm->xm_mode & PERIPH_CAP_SYNC) |
1419 | sc->sc_c.targets[xm->xm_target]->flags |= TARF_SYNC; |
1420 | if ((xm->xm_mode & (PERIPH_CAP_SYNC | PERIPH_CAP_WIDE16)) || |
1421 | sc->sc_c.targets[xm->xm_target]->status == TARST_PROBING) |
1422 | sc->sc_c.targets[xm->xm_target]->status = |
1423 | TARST_ASYNC; |
1424 | |
1425 | for (lun = 0; lun < sc->sc_c.sc_chan.chan_nluns; lun++) { |
1426 | if (scsipi_lookup_periph(chan, |
1427 | xm->xm_target, lun) != NULL) { |
1428 | /* allocate a lun sw entry for this device */ |
1429 | siop_add_dev(sc, xm->xm_target, lun); |
1430 | } |
1431 | } |
1432 | |
1433 | splx(s); |
1434 | } |
1435 | } |
1436 | } |
1437 | |
1438 | static void |
1439 | siop_start(struct siop_softc *sc, struct siop_cmd *siop_cmd) |
1440 | { |
1441 | struct siop_lun *siop_lun; |
1442 | struct siop_xfer *siop_xfer; |
1443 | uint32_t dsa; |
1444 | int timeout; |
1445 | int target, lun, slot; |
1446 | |
1447 | /* |
1448 | * first make sure to read valid data |
1449 | */ |
1450 | siop_script_sync(sc, BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); |
1451 | |
1452 | /* |
1453 | * The queue management here is a bit tricky: the script always looks |
1454 | * at the slot from first to last, so if we always use the first |
1455 | * free slot commands can stay at the tail of the queue ~forever. |
1456 | * The algorithm used here is to restart from the head when we know |
1457 | * that the queue is empty, and only add commands after the last one. |
1458 | * When we're at the end of the queue wait for the script to clear it. |
1459 | * The best thing to do here would be to implement a circular queue, |
1460 | * but using only 53c720 features this can be "interesting". |
1461 | * A mid-way solution could be to implement 2 queues and swap orders. |
1462 | */ |
1463 | slot = sc->sc_currschedslot; |
1464 | /* |
1465 | * If the instruction is 0x80000000 (JUMP foo, IF FALSE) the slot is |
1466 | * free. As this is the last used slot, all previous slots are free, |
1467 | * we can restart from 0. |
1468 | */ |
1469 | if (siop_script_read(sc, (Ent_script_sched_slot0 / 4) + slot * 2) == |
1470 | 0x80000000) { |
1471 | slot = sc->sc_currschedslot = 0; |
1472 | } else { |
1473 | slot++; |
1474 | } |
1475 | target = siop_cmd->cmd_c.xs->xs_periph->periph_target; |
1476 | lun = siop_cmd->cmd_c.xs->xs_periph->periph_lun; |
1477 | siop_lun = |
1478 | ((struct siop_target*)sc->sc_c.targets[target])->siop_lun[lun]; |
1479 | /* if non-tagged command active, panic: this shouldn't happen */ |
1480 | if (siop_lun->siop_tag[0].active != NULL) { |
1481 | panic("siop_start: tagged cmd while untagged running" ); |
1482 | } |
1483 | #ifdef DIAGNOSTIC |
1484 | /* sanity check the tag if needed */ |
1485 | if (siop_cmd->cmd_c.flags & CMDFL_TAG) { |
1486 | if (siop_lun->siop_tag[siop_cmd->cmd_c.tag].active != NULL) |
1487 | panic("siop_start: tag not free" ); |
1488 | if (siop_cmd->cmd_c.tag >= SIOP_NTAG) { |
1489 | scsipi_printaddr(siop_cmd->cmd_c.xs->xs_periph); |
1490 | printf(": tag id %d\n" , siop_cmd->cmd_c.tag); |
1491 | panic("siop_start: invalid tag id" ); |
1492 | } |
1493 | } |
1494 | #endif |
1495 | /* |
1496 | * find a free scheduler slot and load it. |
1497 | */ |
1498 | for (; slot < SIOP_NSLOTS; slot++) { |
1499 | /* |
1500 | * If cmd if 0x80000000 the slot is free |
1501 | */ |
1502 | if (siop_script_read(sc, |
1503 | (Ent_script_sched_slot0 / 4) + slot * 2) == |
1504 | 0x80000000) |
1505 | break; |
1506 | } |
1507 | if (slot == SIOP_NSLOTS) { |
1508 | /* |
1509 | * no more free slot, no need to continue. freeze the queue |
1510 | * and requeue this command. |
1511 | */ |
1512 | scsipi_channel_freeze(&sc->sc_c.sc_chan, 1); |
1513 | sc->sc_flags |= SCF_CHAN_NOSLOT; |
1514 | siop_cmd->cmd_c.xs->error = XS_REQUEUE; |
1515 | siop_cmd->cmd_c.xs->status = SCSI_SIOP_NOCHECK; |
1516 | siop_scsicmd_end(siop_cmd); |
1517 | return; |
1518 | } |
1519 | #ifdef SIOP_DEBUG_SCHED |
1520 | printf("using slot %d for DSA 0x%lx\n" , slot, |
1521 | (u_long)siop_cmd->cmd_c.dsa); |
1522 | #endif |
1523 | /* mark command as active */ |
1524 | if (siop_cmd->cmd_c.status == CMDST_READY) |
1525 | siop_cmd->cmd_c.status = CMDST_ACTIVE; |
1526 | else |
1527 | panic("siop_start: bad status" ); |
1528 | siop_lun->siop_tag[siop_cmd->cmd_c.tag].active = siop_cmd; |
1529 | /* patch scripts with DSA addr */ |
1530 | dsa = siop_cmd->cmd_c.dsa; |
1531 | /* first reselect switch, if we have an entry */ |
1532 | if (siop_lun->siop_tag[siop_cmd->cmd_c.tag].reseloff > 0) |
1533 | siop_script_write(sc, |
1534 | siop_lun->siop_tag[siop_cmd->cmd_c.tag].reseloff + 1, |
1535 | dsa + sizeof(struct siop_common_xfer) + |
1536 | Ent_ldsa_reload_dsa); |
1537 | /* CMD script: MOVE MEMORY addr */ |
1538 | siop_xfer = (struct siop_xfer*)siop_cmd->cmd_tables; |
1539 | siop_xfer->resel[E_ldsa_abs_slot_Used[0]] = |
1540 | siop_htoc32(&sc->sc_c, sc->sc_c.sc_scriptaddr + |
1541 | Ent_script_sched_slot0 + slot * 8); |
1542 | siop_table_sync(siop_cmd, BUS_DMASYNC_PREWRITE); |
1543 | /* scheduler slot: JUMP ldsa_select */ |
1544 | siop_script_write(sc, |
1545 | (Ent_script_sched_slot0 / 4) + slot * 2 + 1, |
1546 | dsa + sizeof(struct siop_common_xfer) + Ent_ldsa_select); |
1547 | /* handle timeout */ |
1548 | if ((siop_cmd->cmd_c.xs->xs_control & XS_CTL_POLL) == 0) { |
1549 | /* start exire timer */ |
1550 | timeout = mstohz(siop_cmd->cmd_c.xs->timeout); |
1551 | if (timeout == 0) |
1552 | timeout = 1; |
1553 | callout_reset( &siop_cmd->cmd_c.xs->xs_callout, |
1554 | timeout, siop_timeout, siop_cmd); |
1555 | } |
1556 | /* |
1557 | * Change JUMP cmd so that this slot will be handled |
1558 | */ |
1559 | siop_script_write(sc, (Ent_script_sched_slot0 / 4) + slot * 2, |
1560 | 0x80080000); |
1561 | sc->sc_currschedslot = slot; |
1562 | |
1563 | /* make sure SCRIPT processor will read valid data */ |
1564 | siop_script_sync(sc,BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); |
1565 | /* Signal script it has some work to do */ |
1566 | bus_space_write_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, |
1567 | SIOP_ISTAT, ISTAT_SIGP); |
1568 | /* and wait for IRQ */ |
1569 | } |
1570 | |
1571 | void |
1572 | siop_timeout(void *v) |
1573 | { |
1574 | struct siop_cmd *siop_cmd = v; |
1575 | struct siop_softc *sc = (struct siop_softc *)siop_cmd->cmd_c.siop_sc; |
1576 | int s; |
1577 | |
1578 | scsipi_printaddr(siop_cmd->cmd_c.xs->xs_periph); |
1579 | printf("command timeout, CDB: " ); |
1580 | scsipi_print_cdb(siop_cmd->cmd_c.xs->cmd); |
1581 | printf("\n" ); |
1582 | |
1583 | s = splbio(); |
1584 | /* reset the scsi bus */ |
1585 | siop_resetbus(&sc->sc_c); |
1586 | |
1587 | /* deactivate callout */ |
1588 | callout_stop(&siop_cmd->cmd_c.xs->xs_callout); |
1589 | /* mark command as being timed out; siop_intr will handle it */ |
1590 | /* |
1591 | * mark command has being timed out and just return; |
1592 | * the bus reset will generate an interrupt, |
1593 | * it will be handled in siop_intr() |
1594 | */ |
1595 | siop_cmd->cmd_c.flags |= CMDFL_TIMEOUT; |
1596 | splx(s); |
1597 | } |
1598 | |
1599 | void |
1600 | siop_dump_script(struct siop_softc *sc) |
1601 | { |
1602 | int i; |
1603 | |
1604 | for (i = 0; i < PAGE_SIZE / 4; i += 2) { |
1605 | printf("0x%04x: 0x%08x 0x%08x" , i * 4, |
1606 | siop_script_read(sc, i), |
1607 | siop_script_read(sc, i + 1)); |
1608 | if ((siop_script_read(sc, i) & 0xe0000000) == 0xc0000000) { |
1609 | i++; |
1610 | printf(" 0x%08x" , siop_script_read(sc, i + 1)); |
1611 | } |
1612 | printf("\n" ); |
1613 | } |
1614 | } |
1615 | |
1616 | void |
1617 | siop_morecbd(struct siop_softc *sc) |
1618 | { |
1619 | int error, off, i, j, s; |
1620 | bus_dma_segment_t seg; |
1621 | int rseg; |
1622 | struct siop_cbd *newcbd; |
1623 | struct siop_xfer *xfer; |
1624 | bus_addr_t dsa; |
1625 | uint32_t *scr; |
1626 | |
1627 | /* allocate a new list head */ |
1628 | newcbd = malloc(sizeof(struct siop_cbd), M_DEVBUF, M_NOWAIT|M_ZERO); |
1629 | if (newcbd == NULL) { |
1630 | aprint_error_dev(sc->sc_c.sc_dev, |
1631 | "can't allocate memory for command descriptors head\n" ); |
1632 | return; |
1633 | } |
1634 | |
1635 | /* allocate cmd list */ |
1636 | newcbd->cmds = malloc(sizeof(struct siop_cmd) * SIOP_NCMDPB, |
1637 | M_DEVBUF, M_NOWAIT|M_ZERO); |
1638 | if (newcbd->cmds == NULL) { |
1639 | aprint_error_dev(sc->sc_c.sc_dev, |
1640 | "can't allocate memory for command descriptors\n" ); |
1641 | goto bad3; |
1642 | } |
1643 | error = bus_dmamem_alloc(sc->sc_c.sc_dmat, PAGE_SIZE, PAGE_SIZE, |
1644 | 0, &seg, 1, &rseg, BUS_DMA_NOWAIT); |
1645 | if (error) { |
1646 | aprint_error_dev(sc->sc_c.sc_dev, |
1647 | "unable to allocate cbd DMA memory, error = %d\n" , |
1648 | error); |
1649 | goto bad2; |
1650 | } |
1651 | error = bus_dmamem_map(sc->sc_c.sc_dmat, &seg, rseg, PAGE_SIZE, |
1652 | (void **)&newcbd->xfers, BUS_DMA_NOWAIT|BUS_DMA_COHERENT); |
1653 | if (error) { |
1654 | aprint_error_dev(sc->sc_c.sc_dev, |
1655 | "unable to map cbd DMA memory, error = %d\n" , |
1656 | error); |
1657 | goto bad2; |
1658 | } |
1659 | error = bus_dmamap_create(sc->sc_c.sc_dmat, PAGE_SIZE, 1, PAGE_SIZE, 0, |
1660 | BUS_DMA_NOWAIT, &newcbd->xferdma); |
1661 | if (error) { |
1662 | aprint_error_dev(sc->sc_c.sc_dev, |
1663 | "unable to create cbd DMA map, error = %d\n" , |
1664 | error); |
1665 | goto bad1; |
1666 | } |
1667 | error = bus_dmamap_load(sc->sc_c.sc_dmat, newcbd->xferdma, |
1668 | newcbd->xfers, PAGE_SIZE, NULL, BUS_DMA_NOWAIT); |
1669 | if (error) { |
1670 | aprint_error_dev(sc->sc_c.sc_dev, |
1671 | "unable to load cbd DMA map, error = %d\n" , |
1672 | error); |
1673 | goto bad0; |
1674 | } |
1675 | #ifdef SIOP_DEBUG |
1676 | printf("%s: alloc newcdb at PHY addr 0x%lx\n" , |
1677 | device_xname(sc->sc_c.sc_dev), |
1678 | (unsigned long)newcbd->xferdma->dm_segs[0].ds_addr); |
1679 | #endif |
1680 | off = (sc->sc_c.features & SF_CHIP_BE) ? 3 : 0; |
1681 | for (i = 0; i < SIOP_NCMDPB; i++) { |
1682 | error = bus_dmamap_create(sc->sc_c.sc_dmat, MAXPHYS, SIOP_NSG, |
1683 | MAXPHYS, 0, BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW, |
1684 | &newcbd->cmds[i].cmd_c.dmamap_data); |
1685 | if (error) { |
1686 | aprint_error_dev(sc->sc_c.sc_dev, |
1687 | "unable to create data DMA map for cbd: " |
1688 | "error %d\n" , error); |
1689 | goto bad0; |
1690 | } |
1691 | error = bus_dmamap_create(sc->sc_c.sc_dmat, |
1692 | sizeof(struct scsipi_generic), 1, |
1693 | sizeof(struct scsipi_generic), 0, |
1694 | BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW, |
1695 | &newcbd->cmds[i].cmd_c.dmamap_cmd); |
1696 | if (error) { |
1697 | aprint_error_dev(sc->sc_c.sc_dev, |
1698 | "unable to create cmd DMA map for cbd %d\n" , error); |
1699 | goto bad0; |
1700 | } |
1701 | newcbd->cmds[i].cmd_c.siop_sc = &sc->sc_c; |
1702 | newcbd->cmds[i].siop_cbdp = newcbd; |
1703 | xfer = &newcbd->xfers[i]; |
1704 | newcbd->cmds[i].cmd_tables = (struct siop_common_xfer *)xfer; |
1705 | memset(newcbd->cmds[i].cmd_tables, 0, sizeof(struct siop_xfer)); |
1706 | dsa = newcbd->xferdma->dm_segs[0].ds_addr + |
1707 | i * sizeof(struct siop_xfer); |
1708 | newcbd->cmds[i].cmd_c.dsa = dsa; |
1709 | newcbd->cmds[i].cmd_c.status = CMDST_FREE; |
1710 | xfer->siop_tables.t_msgout.count= siop_htoc32(&sc->sc_c, 1); |
1711 | xfer->siop_tables.t_msgout.addr = siop_htoc32(&sc->sc_c, dsa); |
1712 | xfer->siop_tables.t_msgin.count= siop_htoc32(&sc->sc_c, 1); |
1713 | xfer->siop_tables.t_msgin.addr = siop_htoc32(&sc->sc_c, |
1714 | dsa + offsetof(struct siop_common_xfer, msg_in)); |
1715 | xfer->siop_tables.t_extmsgin.count= siop_htoc32(&sc->sc_c, 2); |
1716 | xfer->siop_tables.t_extmsgin.addr = siop_htoc32(&sc->sc_c, |
1717 | dsa + offsetof(struct siop_common_xfer, msg_in) + 1); |
1718 | xfer->siop_tables.t_extmsgdata.addr = siop_htoc32(&sc->sc_c, |
1719 | dsa + offsetof(struct siop_common_xfer, msg_in) + 3); |
1720 | xfer->siop_tables.t_status.count= siop_htoc32(&sc->sc_c, 1); |
1721 | xfer->siop_tables.t_status.addr = siop_htoc32(&sc->sc_c, |
1722 | dsa + offsetof(struct siop_common_xfer, status) + off); |
1723 | /* The select/reselect script */ |
1724 | scr = &xfer->resel[0]; |
1725 | for (j = 0; j < __arraycount(load_dsa); j++) |
1726 | scr[j] = siop_htoc32(&sc->sc_c, load_dsa[j]); |
1727 | /* |
1728 | * 0x78000000 is a 'move data8 to reg'. data8 is the second |
1729 | * octet, reg offset is the third. |
1730 | */ |
1731 | scr[Ent_rdsa0 / 4] = siop_htoc32(&sc->sc_c, |
1732 | 0x78100000 | ((dsa & 0x000000ff) << 8)); |
1733 | scr[Ent_rdsa1 / 4] = siop_htoc32(&sc->sc_c, |
1734 | 0x78110000 | ( dsa & 0x0000ff00 )); |
1735 | scr[Ent_rdsa2 / 4] = siop_htoc32(&sc->sc_c, |
1736 | 0x78120000 | ((dsa & 0x00ff0000) >> 8)); |
1737 | scr[Ent_rdsa3 / 4] = siop_htoc32(&sc->sc_c, |
1738 | 0x78130000 | ((dsa & 0xff000000) >> 16)); |
1739 | scr[E_ldsa_abs_reselected_Used[0]] = siop_htoc32(&sc->sc_c, |
1740 | sc->sc_c.sc_scriptaddr + Ent_reselected); |
1741 | scr[E_ldsa_abs_reselect_Used[0]] = siop_htoc32(&sc->sc_c, |
1742 | sc->sc_c.sc_scriptaddr + Ent_reselect); |
1743 | scr[E_ldsa_abs_selected_Used[0]] = siop_htoc32(&sc->sc_c, |
1744 | sc->sc_c.sc_scriptaddr + Ent_selected); |
1745 | scr[E_ldsa_abs_data_Used[0]] = siop_htoc32(&sc->sc_c, |
1746 | dsa + sizeof(struct siop_common_xfer) + Ent_ldsa_data); |
1747 | /* JUMP foo, IF FALSE - used by MOVE MEMORY to clear the slot */ |
1748 | scr[Ent_ldsa_data / 4] = siop_htoc32(&sc->sc_c, 0x80000000); |
1749 | s = splbio(); |
1750 | TAILQ_INSERT_TAIL(&sc->free_list, &newcbd->cmds[i], next); |
1751 | splx(s); |
1752 | #ifdef SIOP_DEBUG |
1753 | printf("tables[%d]: in=0x%x out=0x%x status=0x%x\n" , i, |
1754 | siop_ctoh32(&sc->sc_c, |
1755 | newcbd->cmds[i].cmd_tables->t_msgin.addr), |
1756 | siop_ctoh32(&sc->sc_c, |
1757 | newcbd->cmds[i].cmd_tables->t_msgout.addr), |
1758 | siop_ctoh32(&sc->sc_c, |
1759 | newcbd->cmds[i].cmd_tables->t_status.addr)); |
1760 | #endif |
1761 | } |
1762 | s = splbio(); |
1763 | TAILQ_INSERT_TAIL(&sc->cmds, newcbd, next); |
1764 | sc->sc_c.sc_adapt.adapt_openings += SIOP_NCMDPB; |
1765 | splx(s); |
1766 | return; |
1767 | bad0: |
1768 | bus_dmamap_unload(sc->sc_c.sc_dmat, newcbd->xferdma); |
1769 | bus_dmamap_destroy(sc->sc_c.sc_dmat, newcbd->xferdma); |
1770 | bad1: |
1771 | bus_dmamem_free(sc->sc_c.sc_dmat, &seg, rseg); |
1772 | bad2: |
1773 | free(newcbd->cmds, M_DEVBUF); |
1774 | bad3: |
1775 | free(newcbd, M_DEVBUF); |
1776 | } |
1777 | |
1778 | struct siop_lunsw * |
1779 | siop_get_lunsw(struct siop_softc *sc) |
1780 | { |
1781 | struct siop_lunsw *lunsw; |
1782 | int i; |
1783 | |
1784 | if (sc->script_free_lo + __arraycount(lun_switch) >= sc->script_free_hi) |
1785 | return NULL; |
1786 | lunsw = TAILQ_FIRST(&sc->lunsw_list); |
1787 | if (lunsw != NULL) { |
1788 | #ifdef SIOP_DEBUG |
1789 | printf("siop_get_lunsw got lunsw at offset %d\n" , |
1790 | lunsw->lunsw_off); |
1791 | #endif |
1792 | TAILQ_REMOVE(&sc->lunsw_list, lunsw, next); |
1793 | return lunsw; |
1794 | } |
1795 | lunsw = malloc(sizeof(struct siop_lunsw), M_DEVBUF, M_NOWAIT|M_ZERO); |
1796 | if (lunsw == NULL) |
1797 | return NULL; |
1798 | #ifdef SIOP_DEBUG |
1799 | printf("allocating lunsw at offset %d\n" , sc->script_free_lo); |
1800 | #endif |
1801 | if (sc->sc_c.features & SF_CHIP_RAM) { |
1802 | bus_space_write_region_4(sc->sc_c.sc_ramt, sc->sc_c.sc_ramh, |
1803 | sc->script_free_lo * 4, lun_switch, |
1804 | __arraycount(lun_switch)); |
1805 | bus_space_write_4(sc->sc_c.sc_ramt, sc->sc_c.sc_ramh, |
1806 | (sc->script_free_lo + E_abs_lunsw_return_Used[0]) * 4, |
1807 | sc->sc_c.sc_scriptaddr + Ent_lunsw_return); |
1808 | } else { |
1809 | for (i = 0; i < __arraycount(lun_switch); i++) |
1810 | sc->sc_c.sc_script[sc->script_free_lo + i] = |
1811 | siop_htoc32(&sc->sc_c, lun_switch[i]); |
1812 | sc->sc_c.sc_script[ |
1813 | sc->script_free_lo + E_abs_lunsw_return_Used[0]] = |
1814 | siop_htoc32(&sc->sc_c, |
1815 | sc->sc_c.sc_scriptaddr + Ent_lunsw_return); |
1816 | } |
1817 | lunsw->lunsw_off = sc->script_free_lo; |
1818 | lunsw->lunsw_size = __arraycount(lun_switch); |
1819 | sc->script_free_lo += lunsw->lunsw_size; |
1820 | siop_script_sync(sc, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); |
1821 | return lunsw; |
1822 | } |
1823 | |
1824 | void |
1825 | siop_add_reselsw(struct siop_softc *sc, int target) |
1826 | { |
1827 | int i, j; |
1828 | struct siop_target *siop_target; |
1829 | struct siop_lun *siop_lun; |
1830 | |
1831 | siop_target = (struct siop_target *)sc->sc_c.targets[target]; |
1832 | /* |
1833 | * add an entry to resel switch |
1834 | */ |
1835 | siop_script_sync(sc, BUS_DMASYNC_POSTWRITE); |
1836 | for (i = 0; i < 15; i++) { |
1837 | siop_target->reseloff = Ent_resel_targ0 / 4 + i * 2; |
1838 | if ((siop_script_read(sc, siop_target->reseloff) & 0xff) |
1839 | == 0xff) { /* it's free */ |
1840 | #ifdef SIOP_DEBUG |
1841 | printf("siop: target %d slot %d offset %d\n" , |
1842 | target, i, siop_target->reseloff); |
1843 | #endif |
1844 | /* JUMP abs_foo, IF target | 0x80; */ |
1845 | siop_script_write(sc, siop_target->reseloff, |
1846 | 0x800c0080 | target); |
1847 | siop_script_write(sc, siop_target->reseloff + 1, |
1848 | sc->sc_c.sc_scriptaddr + |
1849 | siop_target->lunsw->lunsw_off * 4 + |
1850 | Ent_lun_switch_entry); |
1851 | break; |
1852 | } |
1853 | } |
1854 | if (i == 15) /* no free slot, shouldn't happen */ |
1855 | panic("siop: resel switch full" ); |
1856 | |
1857 | sc->sc_ntargets++; |
1858 | for (i = 0; i < 8; i++) { |
1859 | siop_lun = siop_target->siop_lun[i]; |
1860 | if (siop_lun == NULL) |
1861 | continue; |
1862 | if (siop_lun->reseloff > 0) { |
1863 | siop_lun->reseloff = 0; |
1864 | for (j = 0; j < SIOP_NTAG; j++) |
1865 | siop_lun->siop_tag[j].reseloff = 0; |
1866 | siop_add_dev(sc, target, i); |
1867 | } |
1868 | } |
1869 | siop_update_scntl3(sc, sc->sc_c.targets[target]); |
1870 | siop_script_sync(sc, BUS_DMASYNC_PREWRITE); |
1871 | } |
1872 | |
1873 | void |
1874 | siop_update_scntl3(struct siop_softc *sc, |
1875 | struct siop_common_target *_siop_target) |
1876 | { |
1877 | struct siop_target *siop_target = (struct siop_target *)_siop_target; |
1878 | |
1879 | /* MOVE target->id >> 24 TO SCNTL3 */ |
1880 | siop_script_write(sc, |
1881 | siop_target->lunsw->lunsw_off + (Ent_restore_scntl3 / 4), |
1882 | 0x78030000 | ((siop_target->target_c.id >> 16) & 0x0000ff00)); |
1883 | /* MOVE target->id >> 8 TO SXFER */ |
1884 | siop_script_write(sc, |
1885 | siop_target->lunsw->lunsw_off + (Ent_restore_scntl3 / 4) + 2, |
1886 | 0x78050000 | (siop_target->target_c.id & 0x0000ff00)); |
1887 | siop_script_sync(sc, BUS_DMASYNC_PREWRITE); |
1888 | } |
1889 | |
1890 | void |
1891 | siop_add_dev(struct siop_softc *sc, int target, int lun) |
1892 | { |
1893 | struct siop_lunsw *lunsw; |
1894 | struct siop_target *siop_target = |
1895 | (struct siop_target *)sc->sc_c.targets[target]; |
1896 | struct siop_lun *siop_lun = siop_target->siop_lun[lun]; |
1897 | int i, ntargets; |
1898 | |
1899 | if (siop_lun->reseloff > 0) |
1900 | return; |
1901 | lunsw = siop_target->lunsw; |
1902 | if ((lunsw->lunsw_off + lunsw->lunsw_size) < sc->script_free_lo) { |
1903 | /* |
1904 | * can't extend this slot. Probably not worth trying to deal |
1905 | * with this case |
1906 | */ |
1907 | #ifdef SIOP_DEBUG |
1908 | aprint_error_dev(sc->sc_c.sc_dev, |
1909 | "%d:%d: can't allocate a lun sw slot\n" , target, lun); |
1910 | #endif |
1911 | return; |
1912 | } |
1913 | /* count how many free targets we still have to probe */ |
1914 | ntargets = sc->sc_c.sc_chan.chan_ntargets - 1 - sc->sc_ntargets; |
1915 | |
1916 | /* |
1917 | * we need 8 bytes for the lun sw additional entry, and |
1918 | * eventually sizeof(tag_switch) for the tag switch entry. |
1919 | * Keep enough free space for the free targets that could be |
1920 | * probed later. |
1921 | */ |
1922 | if (sc->script_free_lo + 2 + |
1923 | (ntargets * __arraycount(lun_switch)) >= |
1924 | ((siop_target->target_c.flags & TARF_TAG) ? |
1925 | sc->script_free_hi - __arraycount(tag_switch) : |
1926 | sc->script_free_hi)) { |
1927 | /* |
1928 | * not enough space, probably not worth dealing with it. |
1929 | * We can hold 13 tagged-queuing capable devices in the 4k RAM. |
1930 | */ |
1931 | #ifdef SIOP_DEBUG |
1932 | aprint_error_dev(sc->sc_c.sc_dev, |
1933 | "%d:%d: not enough memory for a lun sw slot\n" , |
1934 | target, lun); |
1935 | #endif |
1936 | return; |
1937 | } |
1938 | #ifdef SIOP_DEBUG |
1939 | printf("%s:%d:%d: allocate lun sw entry\n" , |
1940 | device_xname(sc->sc_c.sc_dev), target, lun); |
1941 | #endif |
1942 | /* INT int_resellun */ |
1943 | siop_script_write(sc, sc->script_free_lo, 0x98080000); |
1944 | siop_script_write(sc, sc->script_free_lo + 1, A_int_resellun); |
1945 | /* Now the slot entry: JUMP abs_foo, IF lun */ |
1946 | siop_script_write(sc, sc->script_free_lo - 2, |
1947 | 0x800c0000 | lun); |
1948 | siop_script_write(sc, sc->script_free_lo - 1, 0); |
1949 | siop_lun->reseloff = sc->script_free_lo - 2; |
1950 | lunsw->lunsw_size += 2; |
1951 | sc->script_free_lo += 2; |
1952 | if (siop_target->target_c.flags & TARF_TAG) { |
1953 | /* we need a tag switch */ |
1954 | sc->script_free_hi -= __arraycount(tag_switch); |
1955 | if (sc->sc_c.features & SF_CHIP_RAM) { |
1956 | bus_space_write_region_4(sc->sc_c.sc_ramt, |
1957 | sc->sc_c.sc_ramh, |
1958 | sc->script_free_hi * 4, tag_switch, |
1959 | __arraycount(tag_switch)); |
1960 | } else { |
1961 | for(i = 0; i < __arraycount(tag_switch); i++) { |
1962 | sc->sc_c.sc_script[sc->script_free_hi + i] = |
1963 | siop_htoc32(&sc->sc_c, tag_switch[i]); |
1964 | } |
1965 | } |
1966 | siop_script_write(sc, |
1967 | siop_lun->reseloff + 1, |
1968 | sc->sc_c.sc_scriptaddr + sc->script_free_hi * 4 + |
1969 | Ent_tag_switch_entry); |
1970 | |
1971 | for (i = 0; i < SIOP_NTAG; i++) { |
1972 | siop_lun->siop_tag[i].reseloff = |
1973 | sc->script_free_hi + (Ent_resel_tag0 / 4) + i * 2; |
1974 | } |
1975 | } else { |
1976 | /* non-tag case; just work with the lun switch */ |
1977 | siop_lun->siop_tag[0].reseloff = |
1978 | siop_target->siop_lun[lun]->reseloff; |
1979 | } |
1980 | siop_script_sync(sc, BUS_DMASYNC_PREWRITE); |
1981 | } |
1982 | |
1983 | void |
1984 | siop_del_dev(struct siop_softc *sc, int target, int lun) |
1985 | { |
1986 | int i; |
1987 | struct siop_target *siop_target; |
1988 | |
1989 | #ifdef SIOP_DEBUG |
1990 | printf("%s:%d:%d: free lun sw entry\n" , |
1991 | device_xname(sc->sc_c.sc_dev), target, lun); |
1992 | #endif |
1993 | if (sc->sc_c.targets[target] == NULL) |
1994 | return; |
1995 | siop_target = (struct siop_target *)sc->sc_c.targets[target]; |
1996 | free(siop_target->siop_lun[lun], M_DEVBUF); |
1997 | siop_target->siop_lun[lun] = NULL; |
1998 | /* XXX compact sw entry too ? */ |
1999 | /* check if we can free the whole target */ |
2000 | for (i = 0; i < 8; i++) { |
2001 | if (siop_target->siop_lun[i] != NULL) |
2002 | return; |
2003 | } |
2004 | #ifdef SIOP_DEBUG |
2005 | printf("%s: free siop_target for target %d lun %d lunsw offset %d\n" , |
2006 | device_xname(sc->sc_c.sc_dev), target, lun, |
2007 | siop_target->lunsw->lunsw_off); |
2008 | #endif |
2009 | /* |
2010 | * nothing here, free the target struct and resel |
2011 | * switch entry |
2012 | */ |
2013 | siop_script_write(sc, siop_target->reseloff, 0x800c00ff); |
2014 | siop_script_sync(sc, BUS_DMASYNC_PREWRITE); |
2015 | TAILQ_INSERT_TAIL(&sc->lunsw_list, siop_target->lunsw, next); |
2016 | free(sc->sc_c.targets[target], M_DEVBUF); |
2017 | sc->sc_c.targets[target] = NULL; |
2018 | sc->sc_ntargets--; |
2019 | } |
2020 | |
2021 | #ifdef SIOP_STATS |
2022 | void |
2023 | siop_printstats(void) |
2024 | { |
2025 | |
2026 | printf("siop_stat_intr %d\n" , siop_stat_intr); |
2027 | printf("siop_stat_intr_shortxfer %d\n" , siop_stat_intr_shortxfer); |
2028 | printf("siop_stat_intr_xferdisc %d\n" , siop_stat_intr_xferdisc); |
2029 | printf("siop_stat_intr_sdp %d\n" , siop_stat_intr_sdp); |
2030 | printf("siop_stat_intr_saveoffset %d\n" , siop_stat_intr_saveoffset); |
2031 | printf("siop_stat_intr_done %d\n" , siop_stat_intr_done); |
2032 | printf("siop_stat_intr_lunresel %d\n" , siop_stat_intr_lunresel); |
2033 | printf("siop_stat_intr_qfull %d\n" , siop_stat_intr_qfull); |
2034 | } |
2035 | #endif |
2036 | |