2 * Copyright (c) 2009 The DragonFly Project. All rights reserved.
4 * This code is derived from software contributed to The DragonFly Project
5 * by Matthew Dillon <dillon@backplane.com>
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in
15 * the documentation and/or other materials provided with the
17 * 3. Neither the name of The DragonFly Project nor the names of its
18 * contributors may be used to endorse or promote products derived
19 * from this software without specific, prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
25 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
26 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
28 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
29 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
31 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 * Copyright (c) 2006 David Gwynne <dlg@openbsd.org>
37 * Permission to use, copy, modify, and distribute this software for any
38 * purpose with or without fee is hereby granted, provided that the above
39 * copyright notice and this permission notice appear in all copies.
41 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
42 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
43 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
44 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
45 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
46 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
47 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
51 * $OpenBSD: sili.c,v 1.147 2009/02/16 21:19:07 miod Exp $
56 void sili_port_interrupt_enable(struct sili_port *ap);
57 void sili_port_interrupt_redisable(struct sili_port *ap);
58 void sili_port_interrupt_reenable(struct sili_port *ap);
60 int sili_load_prb(struct sili_ccb *);
61 void sili_unload_prb(struct sili_ccb *);
62 static void sili_load_prb_callback(void *info, bus_dma_segment_t *segs,
63 int nsegs, int error);
64 void sili_start(struct sili_ccb *);
65 int sili_port_softreset(struct sili_port *ap);
66 int sili_port_hardreset(struct sili_port *ap);
67 void sili_port_hardstop(struct sili_port *ap);
68 void sili_port_listen(struct sili_port *ap);
70 static void sili_ata_cmd_timeout_unserialized(void *);
71 static int sili_core_timeout(struct sili_ccb *ccb, int really_error);
72 void sili_check_active_timeouts(struct sili_port *ap);
75 void sili_beg_exclusive_access(struct sili_port *ap, struct ata_port *at);
76 void sili_end_exclusive_access(struct sili_port *ap, struct ata_port *at);
78 void sili_issue_pending_commands(struct sili_port *ap, struct sili_ccb *ccb);
80 void sili_port_read_ncq_error(struct sili_port *, int);
82 struct sili_dmamem *sili_dmamem_alloc(struct sili_softc *, bus_dma_tag_t tag);
83 void sili_dmamem_free(struct sili_softc *, struct sili_dmamem *);
84 static void sili_dmamem_saveseg(void *info, bus_dma_segment_t *segs, int nsegs, int error);
86 static void sili_dummy_done(struct ata_xfer *xa);
87 static void sili_empty_done(struct sili_ccb *ccb);
88 static void sili_ata_cmd_done(struct sili_ccb *ccb);
91 * Initialize the global SILI hardware. This code does not set up any of
95 sili_init(struct sili_softc *sc)
97 DPRINTF(SILI_D_VERBOSE, " GHC 0x%b",
98 sili_read(sc, SILI_REG_GHC), SILI_FMT_GHC);
101 * Reset the entire chip. This also resets all ports.
103 * The spec doesn't say anything about how long we have to
104 * wait, so wait 10ms.
106 sili_write(sc, SILI_REG_GCTL, SILI_REG_GCTL_GRESET);
108 sili_write(sc, SILI_REG_GCTL, 0);
115 * Allocate and initialize an SILI port.
118 sili_port_alloc(struct sili_softc *sc, u_int port)
120 struct sili_port *ap;
122 struct sili_prb *prb;
123 struct sili_ccb *ccb;
128 ap = kmalloc(sizeof(*ap), M_DEVBUF, M_WAITOK | M_ZERO);
129 ap->ap_err_scratch = kmalloc(512, M_DEVBUF, M_WAITOK | M_ZERO);
131 ksnprintf(ap->ap_name, sizeof(ap->ap_name), "%s%d.%d",
132 device_get_name(sc->sc_dev),
133 device_get_unit(sc->sc_dev),
135 sc->sc_ports[port] = ap;
138 * Allocate enough so we never have to reallocate, it makes
141 * ap_pmcount will be reduced by the scan if we encounter the
142 * port multiplier port prior to target 15.
144 if (ap->ap_ata == NULL) {
145 ap->ap_ata = kmalloc(sizeof(*ap->ap_ata) * SILI_MAX_PMPORTS,
146 M_DEVBUF, M_INTWAIT | M_ZERO);
147 for (i = 0; i < SILI_MAX_PMPORTS; ++i) {
149 at->at_sili_port = ap;
151 at->at_probe = ATA_PROBE_NEED_INIT;
152 at->at_features |= ATA_PORT_F_RESCAN;
153 ksnprintf(at->at_name, sizeof(at->at_name),
154 "%s.%d", ap->ap_name, i);
157 if (bus_space_subregion(sc->sc_piot, sc->sc_pioh,
158 SILI_PORT_REGION(port), SILI_PORT_SIZE,
160 device_printf(sc->sc_dev,
161 "unable to create register window for port %d\n",
168 ap->ap_probe = ATA_PROBE_NEED_INIT;
169 TAILQ_INIT(&ap->ap_ccb_free);
170 TAILQ_INIT(&ap->ap_ccb_pending);
171 lockinit(&ap->ap_ccb_lock, "silipo", 0, 0);
173 /* Disable port interrupts */
174 sili_pwrite(ap, SILI_PREG_INT_DISABLE, SILI_PREG_INT_MASK);
177 * Reset the port. This is similar to a Device Reset but far
178 * more invasive. We use Device Reset in our hardreset function.
179 * This function also does the same OOB initialization sequence
180 * that Device Reset does.
182 * NOTE: SILI_PREG_STATUS_READY will not be asserted unless and until
183 * a device is connected to the port, so we can't use it to
184 * verify that the port exists.
186 sili_pwrite(ap, SILI_PREG_CTL_SET, SILI_PREG_CTL_RESET);
187 if (sili_pread(ap, SILI_PREG_STATUS) & SILI_PREG_STATUS_READY) {
188 device_printf(sc->sc_dev,
189 "Port %d will not go into reset\n", port);
193 sili_pwrite(ap, SILI_PREG_CTL_CLR, SILI_PREG_CTL_RESET);
196 * Allocate the SGE Table
198 ap->ap_dmamem_prbs = sili_dmamem_alloc(sc, sc->sc_tag_prbs);
199 if (ap->ap_dmamem_prbs == NULL) {
200 kprintf("%s: NOSGET\n", PORTNAME(ap));
205 * Set up the SGE table base address
207 ap->ap_prbs = (struct sili_prb *)SILI_DMA_KVA(ap->ap_dmamem_prbs);
210 * Allocate a CCB for each command slot
212 ap->ap_ccbs = kmalloc(sizeof(struct sili_ccb) * sc->sc_ncmds, M_DEVBUF,
214 if (ap->ap_ccbs == NULL) {
215 device_printf(sc->sc_dev,
216 "unable to allocate command list for port %d\n",
222 * Most structures are in the port BAR. Assign convenient
223 * pointers in the CCBs
225 for (i = 0; i < sc->sc_ncmds; i++) {
226 ccb = &ap->ap_ccbs[i];
228 error = bus_dmamap_create(sc->sc_tag_data, BUS_DMA_ALLOCNOW,
231 device_printf(sc->sc_dev,
232 "unable to create dmamap for port %d "
233 "ccb %d\n", port, i);
238 * WARNING!!! Access to the rfis is only allowed under very
239 * carefully controlled circumstances because it
240 * is located in the LRAM and reading from the
241 * LRAM has hardware issues which can blow the
242 * port up. I kid you not (from Linux, and
243 * verified by testing here).
245 callout_init(&ccb->ccb_timeout);
248 ccb->ccb_prb = &ap->ap_prbs[i];
249 ccb->ccb_prb_paddr = SILI_DMA_DVA(ap->ap_dmamem_prbs) +
250 sizeof(*ccb->ccb_prb) * i;
251 ccb->ccb_xa.fis = &ccb->ccb_prb->prb_h2d;
252 prb = bus_space_kva(ap->ap_sc->sc_iot, ap->ap_ioh,
253 SILI_PREG_LRAM_SLOT(i));
254 ccb->ccb_prb_lram = prb;
256 * Point our rfis to host-memory instead of the LRAM PRB.
257 * It will be copied back if ATA_F_AUTOSENSE is set. The
260 /*ccb->ccb_xa.rfis = &prb->prb_d2h;*/
261 ccb->ccb_xa.rfis = (void *)ccb->ccb_xa.fis;
263 ccb->ccb_xa.packetcmd = prb_packet(ccb->ccb_prb);
266 ccb->ccb_xa.state = ATA_S_COMPLETE;
269 * Reserve CCB[1] as the error CCB. It doesn't matter
270 * which one we use for the Sili controllers.
273 ap->ap_err_ccb = ccb;
278 * Do not call sili_port_init() here, the helper thread will
279 * call it for the parallel probe
281 sili_os_start_port(ap);
284 sili_port_free(sc, port);
289 * This is called once by the low level attach (from the helper thread)
290 * to get the port state machine rolling, and typically only called again
291 * on a hot-plug insertion event.
293 * This is called for PM attachments and hot-plug insertion events, and
294 * typically not called again until after an unplug/replug sequence.
296 * Returns 0 if a device is successfully detected.
299 sili_port_init(struct sili_port *ap)
302 * Do a very hard reset of the port
304 sili_pwrite(ap, SILI_PREG_CTL_SET, SILI_PREG_CTL_RESET);
306 sili_pwrite(ap, SILI_PREG_CTL_CLR, SILI_PREG_CTL_RESET);
309 * Register initialization
311 sili_pwrite(ap, SILI_PREG_FIFO_CTL,
312 SILI_PREG_FIFO_CTL_ENCODE(1024, 1024));
313 sili_pwrite(ap, SILI_PREG_CTL_CLR, SILI_PREG_CTL_32BITDMA |
315 sili_pwrite(ap, SILI_PREG_CTL_SET, SILI_PREG_CTL_NOAUTOCC);
316 if (ap->ap_sc->sc_flags & SILI_F_SSNTF)
317 sili_pwrite(ap, SILI_PREG_SNTF, -1);
318 ap->ap_probe = ATA_PROBE_NEED_HARD_RESET;
320 sili_port_interrupt_enable(ap);
325 * Handle an errored port. This routine is called when the only
326 * commands left on the queue are expired, meaning we can safely
327 * go through a port init to clear its state.
329 * We complete the expired CCBs and then restart the queue.
333 sili_port_reinit(struct sili_port *ap)
335 struct sili_ccb *ccb;
342 reentrant = (ap->ap_flags & AP_F_ERR_CCB_RESERVED) ? 1 : 0;
344 if (bootverbose || 1) {
345 kprintf("%s: reiniting port after error reent=%d "
347 PORTNAME(ap), reentrant, ap->ap_expired);
351 * Clear port resume, clear bits 16:13 in the port device status
352 * register. This is from the data sheet.
354 * Data sheet does not specify a delay but it seems prudent.
356 sili_pwrite(ap, SILI_PREG_CTL_CLR, SILI_PREG_CTL_RESUME);
358 for (target = 0; target < SILI_MAX_PMPORTS; ++target) {
359 data = sili_pread(ap, SILI_PREG_PM_STATUS(target));
360 data &= ~(SILI_PREG_PM_STATUS_SERVICE |
361 SILI_PREG_PM_STATUS_LEGACY |
362 SILI_PREG_PM_STATUS_NATIVE |
363 SILI_PREG_PM_STATUS_VBSY);
364 sili_pwrite(ap, SILI_PREG_PM_STATUS(target), data);
365 sili_pwrite(ap, SILI_PREG_PM_QACTIVE(target), 0);
369 * Issue a Port Initialize and wait for it to clear. This flushes
370 * commands but does not reset the port. Then wait for port ready.
372 sili_pwrite(ap, SILI_PREG_CTL_SET, SILI_PREG_CTL_INIT);
373 if (sili_pwait_clr_to(ap, 5000, SILI_PREG_STATUS, SILI_PREG_CTL_INIT)) {
374 kprintf("%s: Unable to reinit, port failed\n",
377 if (sili_pwait_set(ap, SILI_PREG_STATUS, SILI_PREG_STATUS_READY)) {
378 kprintf("%s: Unable to reinit, port will not come ready\n",
383 * If reentrant, stop here. Otherwise the state for the original
384 * ahci_port_reinit() will get ripped out from under it.
390 * Read the LOG ERROR page for targets that returned a specific
391 * D2H FIS with ERR set.
393 for (target = 0; target < SILI_MAX_PMPORTS; ++target) {
394 at = &ap->ap_ata[target];
395 if (at->at_features & ATA_PORT_F_READLOG) {
396 at->at_features &= ~ATA_PORT_F_READLOG;
397 sili_port_read_ncq_error(ap, target);
402 * Finally clean out the expired commands, we've probed the error
403 * status (or hopefully probed the error status). Well, ok,
404 * we probably didn't XXX.
406 while (ap->ap_expired) {
407 slot = ffs(ap->ap_expired) - 1;
408 ap->ap_expired &= ~(1 << slot);
409 KKASSERT(ap->ap_active & (1 << slot));
410 ap->ap_active &= ~(1 << slot);
412 ccb = &ap->ap_ccbs[slot];
413 ccb->ccb_xa.state = ATA_S_TIMEOUT;
415 ccb->ccb_xa.complete(&ccb->ccb_xa);
419 * Wow. All done. We can get the port moving again.
421 if (ap->ap_probe == ATA_PROBE_FAILED) {
422 kprintf("%s: reinit failed, port is dead\n", PORTNAME(ap));
423 while ((ccb = TAILQ_FIRST(&ap->ap_ccb_pending)) != NULL) {
424 TAILQ_REMOVE(&ap->ap_ccb_pending, ccb, ccb_entry);
425 ccb->ccb_xa.flags &= ~ATA_F_TIMEOUT_DESIRED;
426 ccb->ccb_xa.state = ATA_S_TIMEOUT;
428 ccb->ccb_xa.complete(&ccb->ccb_xa);
431 sili_issue_pending_commands(ap, NULL);
436 * Enable or re-enable interrupts on a port.
438 * This routine is called from the port initialization code or from the
439 * helper thread as the real interrupt may be forced to turn off certain
443 sili_port_interrupt_enable(struct sili_port *ap)
447 data = SILI_PREG_INT_CCOMPLETE | SILI_PREG_INT_CERROR |
448 SILI_PREG_INT_PHYRDYCHG | SILI_PREG_INT_DEVEXCHG |
449 SILI_PREG_INT_DECODE | SILI_PREG_INT_CRC |
450 SILI_PREG_INT_HANDSHK | SILI_PREG_INT_PMCHANGE;
451 if (ap->ap_sc->sc_flags & SILI_F_SSNTF)
452 data |= SILI_PREG_INT_SDB;
453 sili_pwrite(ap, SILI_PREG_INT_ENABLE, data);
457 sili_port_interrupt_redisable(struct sili_port *ap)
461 data = sili_read(ap->ap_sc, SILI_REG_GCTL);
462 data &= SILI_REG_GINT_PORTMASK;
463 data &= ~(1 << ap->ap_num);
464 sili_write(ap->ap_sc, SILI_REG_GCTL, data);
468 sili_port_interrupt_reenable(struct sili_port *ap)
472 data = sili_read(ap->ap_sc, SILI_REG_GCTL);
473 data &= SILI_REG_GINT_PORTMASK;
474 data |= (1 << ap->ap_num);
475 sili_write(ap->ap_sc, SILI_REG_GCTL, data);
479 * Run the port / target state machine from a main context.
481 * The state machine for the port is always run.
483 * If atx is non-NULL run the state machine for a particular target.
484 * If atx is NULL run the state machine for all targets.
487 sili_port_state_machine(struct sili_port *ap, int initial)
496 * State machine for port. Note that CAM is not yet associated
497 * during the initial parallel probe and the port's probe state
498 * will not get past ATA_PROBE_NEED_IDENT.
501 if (initial == 0 && ap->ap_probe <= ATA_PROBE_NEED_HARD_RESET) {
502 kprintf("%s: Waiting 7 seconds on insertion\n",
507 if (ap->ap_probe == ATA_PROBE_NEED_INIT)
509 if (ap->ap_probe == ATA_PROBE_NEED_HARD_RESET)
510 sili_port_reset(ap, NULL, 1);
511 if (ap->ap_probe == ATA_PROBE_NEED_SOFT_RESET)
512 sili_port_reset(ap, NULL, 0);
513 if (ap->ap_probe == ATA_PROBE_NEED_IDENT)
514 sili_cam_probe(ap, NULL);
516 if (ap->ap_type != ATA_PORT_T_PM) {
517 if (ap->ap_probe == ATA_PROBE_FAILED) {
518 sili_cam_changed(ap, NULL, 0);
519 } else if (ap->ap_probe >= ATA_PROBE_NEED_IDENT) {
520 sili_cam_changed(ap, NULL, 1);
526 * Port Multiplier state machine.
528 * Get a mask of changed targets and combine with any runnable
529 * states already present.
531 for (loop = 0; ;++loop) {
532 if (sili_pm_read(ap, 15, SATA_PMREG_EINFO, &data)) {
533 kprintf("%s: PM unable to read hot-plug bitmap\n",
539 * Do at least one loop, then stop if no more state changes
540 * have occured. The PM might not generate a new
541 * notification until we clear the entire bitmap.
543 if (loop && data == 0)
547 * New devices showing up in the bitmap require some spin-up
548 * time before we start probing them. Reset didsleep. The
549 * first new device we detect will sleep before probing.
551 * This only applies to devices whos change bit is set in
552 * the data, and does not apply to the initial boot-time
557 for (target = 0; target < ap->ap_pmcount; ++target) {
558 at = &ap->ap_ata[target];
561 * Check the target state for targets behind the PM
562 * which have changed state. This will adjust
563 * at_probe and set ATA_PORT_F_RESCAN
565 * We want to wait at least 10 seconds before probing
566 * a newly inserted device. If the check status
567 * indicates a device is present and in need of a
568 * hard reset, we make sure we have slept before
571 * We also need to wait at least 1 second for the
572 * PHY state to change after insertion, if we
573 * haven't already waited the 10 seconds.
575 * NOTE: When pm_check_good finds a good port it
576 * typically starts us in probe state
577 * NEED_HARD_RESET rather than INIT.
579 if (data & (1 << target)) {
580 if (initial == 0 && didsleep == 0)
582 sili_pm_check_good(ap, target);
583 if (initial == 0 && didsleep == 0 &&
584 at->at_probe <= ATA_PROBE_NEED_HARD_RESET
587 kprintf("%s: Waiting 10 seconds on insertion\n", PORTNAME(ap));
588 sili_os_sleep(10000);
593 * Report hot-plug events before the probe state
594 * really gets hot. Only actual events are reported
595 * here to reduce spew.
597 if (data & (1 << target)) {
598 kprintf("%s: HOTPLUG (PM) - ", ATANAME(ap, at));
599 switch(at->at_probe) {
600 case ATA_PROBE_NEED_INIT:
601 case ATA_PROBE_NEED_HARD_RESET:
602 kprintf("Device inserted\n");
604 case ATA_PROBE_FAILED:
605 kprintf("Device removed\n");
608 kprintf("Device probe in progress\n");
614 * Run through the state machine as necessary if
615 * the port is not marked failed.
617 * The state machine may stop at NEED_IDENT if
618 * CAM is not yet attached.
620 * Acquire exclusive access to the port while we
621 * are doing this. This prevents command-completion
622 * from queueing commands for non-polled targets
623 * inbetween our probe steps. We need to do this
624 * because the reset probes can generate severe PHY
625 * and protocol errors and soft-brick the port.
627 if (at->at_probe != ATA_PROBE_FAILED &&
628 at->at_probe != ATA_PROBE_GOOD) {
629 if (at->at_probe == ATA_PROBE_NEED_INIT)
630 sili_pm_port_init(ap, at);
631 if (at->at_probe == ATA_PROBE_NEED_HARD_RESET)
632 sili_port_reset(ap, at, 1);
633 if (at->at_probe == ATA_PROBE_NEED_SOFT_RESET)
634 sili_port_reset(ap, at, 0);
635 if (at->at_probe == ATA_PROBE_NEED_IDENT)
636 sili_cam_probe(ap, at);
640 * Add or remove from CAM
642 if (at->at_features & ATA_PORT_F_RESCAN) {
643 at->at_features &= ~ATA_PORT_F_RESCAN;
644 if (at->at_probe == ATA_PROBE_FAILED) {
645 sili_cam_changed(ap, at, 0);
646 } else if (at->at_probe >= ATA_PROBE_NEED_IDENT) {
647 sili_cam_changed(ap, at, 1);
650 data &= ~(1 << target);
653 kprintf("%s: WARNING (PM): extra bits set in "
654 "EINFO: %08x\n", PORTNAME(ap), data);
655 while (target < SILI_MAX_PMPORTS) {
656 sili_pm_check_good(ap, target);
664 * De-initialize and detach a port.
667 sili_port_free(struct sili_softc *sc, u_int port)
669 struct sili_port *ap = sc->sc_ports[port];
670 struct sili_ccb *ccb;
673 * Ensure port is disabled and its interrupts are all flushed.
676 sili_os_stop_port(ap);
677 sili_pwrite(ap, SILI_PREG_INT_DISABLE, SILI_PREG_INT_MASK);
678 sili_pwrite(ap, SILI_PREG_CTL_SET, SILI_PREG_CTL_RESET);
679 sili_write(ap->ap_sc, SILI_REG_GCTL,
680 sili_read(ap->ap_sc, SILI_REG_GCTL) &
681 ~SILI_REG_GINT_PORTST(ap->ap_num));
685 while ((ccb = sili_get_ccb(ap)) != NULL) {
686 if (ccb->ccb_dmamap) {
687 bus_dmamap_destroy(sc->sc_tag_data,
689 ccb->ccb_dmamap = NULL;
692 if ((ccb = ap->ap_err_ccb) != NULL) {
693 if (ccb->ccb_dmamap) {
694 bus_dmamap_destroy(sc->sc_tag_data,
696 ccb->ccb_dmamap = NULL;
698 ap->ap_err_ccb = NULL;
700 kfree(ap->ap_ccbs, M_DEVBUF);
704 if (ap->ap_dmamem_prbs) {
705 sili_dmamem_free(sc, ap->ap_dmamem_prbs);
706 ap->ap_dmamem_prbs = NULL;
709 kfree(ap->ap_ata, M_DEVBUF);
712 if (ap->ap_err_scratch) {
713 kfree(ap->ap_err_scratch, M_DEVBUF);
714 ap->ap_err_scratch = NULL;
717 /* bus_space(9) says we dont free the subregions handle */
720 sc->sc_ports[port] = NULL;
726 * If hard is 0 perform a softreset of the port.
727 * If hard is 1 perform a hard reset of the port.
728 * If hard is 2 perform a hard reset of the port and cycle the phy.
730 * If at is non-NULL an indirect port via a port-multiplier is being
731 * reset, otherwise a direct port is being reset.
733 * NOTE: Indirect ports can only be soft-reset.
736 sili_port_reset(struct sili_port *ap, struct ata_port *at, int hard)
742 rc = sili_pm_hardreset(ap, at->at_target, hard);
744 rc = sili_port_hardreset(ap);
747 rc = sili_pm_softreset(ap, at->at_target);
749 rc = sili_port_softreset(ap);
755 * SILI soft reset, Section 10.4.1
757 * (at) will be NULL when soft-resetting a directly-attached device, and
758 * non-NULL when soft-resetting a device through a port multiplier.
760 * This function keeps port communications intact and attempts to generate
761 * a reset to the connected device using device commands.
764 sili_port_softreset(struct sili_port *ap)
766 struct sili_ccb *ccb = NULL;
767 struct sili_prb *prb;
774 kprintf("%s: START SOFTRESET\n", PORTNAME(ap));
777 ap->ap_state = AP_S_NORMAL;
780 * Prep the special soft-reset SII command.
782 ccb = sili_get_err_ccb(ap);
783 ccb->ccb_done = sili_empty_done;
784 ccb->ccb_xa.flags = ATA_F_POLL | ATA_F_AUTOSENSE | ATA_F_EXCLUSIVE;
785 ccb->ccb_xa.complete = sili_dummy_done;
786 ccb->ccb_xa.at = NULL;
789 bzero(&prb->prb_h2d, sizeof(prb->prb_h2d));
790 prb->prb_h2d.flags = 0;
791 prb->prb_control = SILI_PRB_CTRL_SOFTRESET;
792 prb->prb_override = 0;
793 prb->prb_xfer_count = 0;
795 ccb->ccb_xa.state = ATA_S_PENDING;
798 * NOTE: Must use sili_quick_timeout() because we hold the err_ccb
800 if (sili_poll(ccb, 8000, sili_quick_timeout) != ATA_S_COMPLETE) {
801 kprintf("%s: First FIS failed\n", PORTNAME(ap));
805 sig = (prb->prb_d2h.lba_high << 24) |
806 (prb->prb_d2h.lba_mid << 16) |
807 (prb->prb_d2h.lba_low << 8) |
808 (prb->prb_d2h.sector_count);
810 kprintf("%s: SOFTRESET SIGNATURE %08x\n", PORTNAME(ap), sig);
813 * If the softreset is trying to clear a BSY condition after a
814 * normal portreset we assign the port type.
816 * If the softreset is being run first as part of the ccb error
817 * processing code then report if the device signature changed
820 if (ap->ap_type == ATA_PORT_T_NONE) {
821 ap->ap_type = sili_port_signature(ap, NULL, sig);
823 if (sili_port_signature(ap, NULL, sig) != ap->ap_type) {
824 kprintf("%s: device signature unexpectedly "
825 "changed\n", PORTNAME(ap));
826 error = EBUSY; /* XXX */
832 sili_put_err_ccb(ccb);
836 * If we failed to softreset make the port quiescent, otherwise
837 * make sure the port's start/stop state matches what it was on
840 * Don't kill the port if the softreset is on a port multiplier
841 * target, that would kill all the targets!
844 kprintf("%s: END SOFTRESET %d prob=%d state=%d\n",
845 PORTNAME(ap), error, ap->ap_probe, ap->ap_state);
848 sili_port_hardstop(ap);
849 /* ap_probe set to failed */
851 ap->ap_probe = ATA_PROBE_NEED_IDENT;
856 sili_pwrite(ap, SILI_PREG_SERR, -1);
858 kprintf("%s: END SOFTRESET\n", PORTNAME(ap));
864 * This function does a hard reset of the port. Note that the device
865 * connected to the port could still end-up hung. Phy detection is
866 * used to short-cut longer operations.
869 sili_port_hardreset(struct sili_port *ap)
876 kprintf("%s: START HARDRESET\n", PORTNAME(ap));
878 ap->ap_state = AP_S_NORMAL;
881 * Set SCTL up for any speed restrictions before issuing the
882 * device reset. This may also take us out of an INIT state
883 * (if we were previously in a continuous reset state from
884 * sili_port_listen()).
886 data = SILI_PREG_SCTL_SPM_NONE |
887 SILI_PREG_SCTL_IPM_NONE |
888 SILI_PREG_SCTL_SPD_NONE |
889 SILI_PREG_SCTL_DET_NONE;
890 if (SiliForceGen1 & (1 << ap->ap_num)) {
891 data &= ~SILI_PREG_SCTL_SPD_NONE;
892 data |= SILI_PREG_SCTL_SPD_GEN1;
894 sili_pwrite(ap, SILI_PREG_SCTL, data);
897 * The transition from a continuous COMRESET state from
898 * sili_port_listen() back to device detect can take a
899 * few seconds. It's quite non-deterministic. Most of
900 * the time it takes far less. Use a polling loop to
905 data = sili_pread(ap, SILI_PREG_SSTS);
906 if (data & SILI_PREG_SSTS_DET)
908 loop -= sili_os_softsleep();
913 * Issue Device Reset, give the phy a little time to settle down.
915 * NOTE: Unlike Port Reset, the port ready signal will not
916 * go active unless a device is established to be on
919 sili_pwrite(ap, SILI_PREG_CTL_CLR, SILI_PREG_CTL_PMA);
920 sili_pwrite(ap, SILI_PREG_CTL_CLR, SILI_PREG_CTL_RESUME);
921 sili_pwrite(ap, SILI_PREG_CTL_SET, SILI_PREG_CTL_DEVRESET);
922 if (sili_pwait_clr(ap, SILI_PREG_CTL_SET, SILI_PREG_CTL_DEVRESET)) {
923 kprintf("%s: hardreset failed to clear\n", PORTNAME(ap));
928 * Try to determine if there is a device on the port.
930 * Give the device 3/10 second to at least be detected.
934 data = sili_pread(ap, SILI_PREG_SSTS);
935 if (data & SILI_PREG_SSTS_DET)
937 loop -= sili_os_softsleep();
941 kprintf("%s: Port appears to be unplugged\n",
949 * There is something on the port. Give the device 3 seconds
952 if (sili_pwait_eq(ap, 3000, SILI_PREG_SSTS,
953 SILI_PREG_SSTS_DET, SILI_PREG_SSTS_DET_DEV)) {
955 kprintf("%s: Device may be powered down\n",
963 * We got something that definitely looks like a device. Give
964 * the device time to send us its first D2H FIS.
966 * This effectively waits for BSY to clear.
968 if (sili_pwait_set_to(ap, 3000, SILI_PREG_STATUS,
969 SILI_PREG_STATUS_READY)) {
977 * Do the PM port probe regardless of how things turned out above.
979 * If the PM port probe fails it will return the original error
982 if (ap->ap_sc->sc_flags & SILI_F_SPM) {
983 error = sili_pm_port_probe(ap, error);
992 if (ap->ap_type == ATA_PORT_T_PM)
993 ap->ap_probe = ATA_PROBE_GOOD;
995 ap->ap_probe = ATA_PROBE_NEED_SOFT_RESET;
999 * No device detected.
1001 data = sili_pread(ap, SILI_PREG_SSTS);
1003 switch(data & SATA_PM_SSTS_DET) {
1004 case SILI_PREG_SSTS_DET_DEV_NE:
1005 kprintf("%s: Device not communicating\n",
1008 case SILI_PREG_SSTS_DET_OFFLINE:
1009 kprintf("%s: PHY offline\n",
1013 kprintf("%s: No device detected\n",
1017 sili_port_hardstop(ap);
1023 kprintf("%s: Device on port is bricked\n",
1025 sili_port_hardstop(ap);
1028 sili_pwrite(ap, SILI_PREG_SERR, -1);
1031 kprintf("%s: END HARDRESET %d\n", PORTNAME(ap), error);
1036 * Hard-stop on hot-swap device removal. See 10.10.1
1038 * Place the port in a mode that will allow it to detect hot-swap insertions.
1039 * This is a bit imprecise because just setting-up SCTL to DET_INIT doesn't
1040 * seem to do the job.
1043 sili_port_hardstop(struct sili_port *ap)
1045 struct sili_ccb *ccb;
1046 struct ata_port *at;
1050 ap->ap_state = AP_S_FATAL_ERROR;
1051 ap->ap_probe = ATA_PROBE_FAILED;
1052 ap->ap_type = ATA_PORT_T_NONE;
1055 * Clean up AT sub-ports on SATA port.
1057 for (i = 0; ap->ap_ata && i < SILI_MAX_PMPORTS; ++i) {
1058 at = &ap->ap_ata[i];
1059 at->at_type = ATA_PORT_T_NONE;
1060 at->at_probe = ATA_PROBE_FAILED;
1061 at->at_features &= ~ATA_PORT_F_READLOG;
1065 * Kill the port. Don't bother waiting for it to transition
1068 sili_pwrite(ap, SILI_PREG_CTL_SET, SILI_PREG_CTL_RESET);
1069 if (sili_pread(ap, SILI_PREG_STATUS) & SILI_PREG_STATUS_READY) {
1070 kprintf("%s: Port will not go into reset\n",
1074 sili_pwrite(ap, SILI_PREG_CTL_CLR, SILI_PREG_CTL_RESET);
1077 * Turn off port-multiplier control bit
1079 sili_pwrite(ap, SILI_PREG_CTL_CLR, SILI_PREG_CTL_PMA);
1082 * Clean up the command list.
1084 while (ap->ap_active) {
1085 slot = ffs(ap->ap_active) - 1;
1086 ap->ap_active &= ~(1 << slot);
1087 ap->ap_expired &= ~(1 << slot);
1088 --ap->ap_active_cnt;
1089 ccb = &ap->ap_ccbs[slot];
1090 if (ccb->ccb_xa.flags & ATA_F_TIMEOUT_RUNNING) {
1091 callout_stop(&ccb->ccb_timeout);
1092 ccb->ccb_xa.flags &= ~ATA_F_TIMEOUT_RUNNING;
1094 ccb->ccb_xa.flags &= ~(ATA_F_TIMEOUT_DESIRED |
1095 ATA_F_TIMEOUT_EXPIRED);
1096 ccb->ccb_xa.state = ATA_S_TIMEOUT;
1098 ccb->ccb_xa.complete(&ccb->ccb_xa);
1100 while ((ccb = TAILQ_FIRST(&ap->ap_ccb_pending)) != NULL) {
1101 TAILQ_REMOVE(&ap->ap_ccb_pending, ccb, ccb_entry);
1102 ccb->ccb_xa.state = ATA_S_TIMEOUT;
1103 ccb->ccb_xa.flags &= ~ATA_F_TIMEOUT_DESIRED;
1105 ccb->ccb_xa.complete(&ccb->ccb_xa);
1107 KKASSERT(ap->ap_active_cnt == 0);
1110 * Put the port into a listen mode, we want to get insertion/removal
1113 sili_port_listen(ap);
1117 * Place port into a listen mode for hotplug events only. The port has
1118 * already been reset and the command processor may not be ready due
1119 * to the lack of a device.
1122 sili_port_listen(struct sili_port *ap)
1127 data = SILI_PREG_SCTL_SPM_NONE |
1128 SILI_PREG_SCTL_IPM_NONE |
1129 SILI_PREG_SCTL_SPD_NONE |
1130 SILI_PREG_SCTL_DET_INIT;
1131 if (SiliForceGen1 & (1 << ap->ap_num)) {
1132 data &= ~SILI_PREG_SCTL_SPD_NONE;
1133 data |= SILI_PREG_SCTL_SPD_GEN1;
1137 sili_pwrite(ap, SILI_PREG_SERR, -1);
1138 sili_pwrite(ap, SILI_PREG_INT_ENABLE, SILI_PREG_INT_PHYRDYCHG |
1139 SILI_PREG_INT_DEVEXCHG);
1143 * Figure out what type of device is connected to the port, ATAPI or
1147 sili_port_signature(struct sili_port *ap, struct ata_port *at, u_int32_t sig)
1150 kprintf("%s: sig %08x\n", ATANAME(ap, at), sig);
1151 if ((sig & 0xffff0000) == (SATA_SIGNATURE_ATAPI & 0xffff0000)) {
1152 return(ATA_PORT_T_ATAPI);
1153 } else if ((sig & 0xffff0000) ==
1154 (SATA_SIGNATURE_PORT_MULTIPLIER & 0xffff0000)) {
1155 return(ATA_PORT_T_PM);
1157 return(ATA_PORT_T_DISK);
1162 * Load the DMA descriptor table for a CCB's buffer.
1164 * NOTE: ATA_F_PIO is auto-selected by sili part.
1167 sili_load_prb(struct sili_ccb *ccb)
1169 struct sili_port *ap = ccb->ccb_port;
1170 struct sili_softc *sc = ap->ap_sc;
1171 struct ata_xfer *xa = &ccb->ccb_xa;
1172 struct sili_prb *prb = ccb->ccb_prb;
1173 struct sili_sge *sge;
1174 bus_dmamap_t dmap = ccb->ccb_dmamap;
1178 * Set up the PRB. The PRB contains 2 SGE's (1 if it is an ATAPI
1179 * command). The SGE must be set up to link to the rest of our
1180 * SGE array, in blocks of four SGEs (a SGE table) starting at
1182 prb->prb_xfer_count = 0;
1183 prb->prb_control = 0;
1184 prb->prb_override = 0;
1185 sge = (ccb->ccb_xa.flags & ATA_F_PACKET) ?
1186 &prb->prb_sge_packet : &prb->prb_sge_normal;
1187 if (xa->datalen == 0) {
1188 sge->sge_flags = SILI_SGE_FLAGS_TRM | SILI_SGE_FLAGS_DRD;
1193 if (ccb->ccb_xa.flags & ATA_F_READ)
1194 prb->prb_control |= SILI_PRB_CTRL_READ;
1195 if (ccb->ccb_xa.flags & ATA_F_WRITE)
1196 prb->prb_control |= SILI_PRB_CTRL_WRITE;
1197 sge->sge_flags = SILI_SGE_FLAGS_LNK;
1199 sge->sge_paddr = ccb->ccb_prb_paddr +
1200 offsetof(struct sili_prb, prb_sge[0]);
1203 * Load our sge array.
1205 error = bus_dmamap_load(sc->sc_tag_data, dmap,
1206 xa->data, xa->datalen,
1207 sili_load_prb_callback,
1209 ((xa->flags & ATA_F_NOWAIT) ?
1210 BUS_DMA_NOWAIT : BUS_DMA_WAITOK));
1212 kprintf("%s: error %d loading dmamap\n", PORTNAME(ap), error);
1216 bus_dmamap_sync(sc->sc_tag_data, dmap,
1217 (xa->flags & ATA_F_READ) ?
1218 BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE);
1224 * Callback from BUSDMA system to load the segment list.
1226 * The scatter/gather table is loaded by the sili chip in blocks of
1227 * four SGE's. If a continuance is required the last entry in each
1228 * block must point to the next block.
1232 sili_load_prb_callback(void *info, bus_dma_segment_t *segs, int nsegs,
1235 struct sili_ccb *ccb = info;
1236 struct sili_sge *sge;
1239 KKASSERT(nsegs <= SILI_MAX_SGET);
1242 sge = &ccb->ccb_prb->prb_sge[0];
1244 if ((sgi & 3) == 3) {
1245 sge->sge_paddr = htole64(ccb->ccb_prb_paddr +
1246 offsetof(struct sili_prb,
1249 sge->sge_flags = SILI_SGE_FLAGS_LNK;
1251 sge->sge_paddr = htole64(segs->ds_addr);
1252 sge->sge_count = htole32(segs->ds_len);
1261 sge->sge_flags |= SILI_SGE_FLAGS_TRM;
1265 sili_unload_prb(struct sili_ccb *ccb)
1267 struct sili_port *ap = ccb->ccb_port;
1268 struct sili_softc *sc = ap->ap_sc;
1269 struct ata_xfer *xa = &ccb->ccb_xa;
1270 bus_dmamap_t dmap = ccb->ccb_dmamap;
1272 if (xa->datalen != 0) {
1273 bus_dmamap_sync(sc->sc_tag_data, dmap,
1274 (xa->flags & ATA_F_READ) ?
1275 BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE);
1277 bus_dmamap_unload(sc->sc_tag_data, dmap);
1279 if (ccb->ccb_xa.flags & ATA_F_NCQ)
1282 xa->resid = xa->datalen -
1283 le32toh(ccb->ccb_prb->prb_xfer_count);
1288 * Start a command and poll for completion.
1290 * timeout is in ms and only counts once the command gets on-chip.
1292 * Returns ATA_S_* state, compare against ATA_S_COMPLETE to determine
1293 * that no error occured.
1295 * NOTE: If the caller specifies a NULL timeout function the caller is
1296 * responsible for clearing hardware state on failure, but we will
1297 * deal with removing the ccb from any pending queue.
1299 * NOTE: NCQ should never be used with this function.
1301 * NOTE: If the port is in a failed state and stopped we do not try
1302 * to activate the ccb.
1305 sili_poll(struct sili_ccb *ccb, int timeout,
1306 void (*timeout_fn)(struct sili_ccb *))
1308 struct sili_port *ap = ccb->ccb_port;
1310 if (ccb->ccb_port->ap_state == AP_S_FATAL_ERROR) {
1311 ccb->ccb_xa.state = ATA_S_ERROR;
1312 return(ccb->ccb_xa.state);
1318 sili_port_intr(ap, 1);
1319 switch(ccb->ccb_xa.state) {
1321 timeout -= sili_os_softsleep();
1325 * The packet can get stuck on the pending queue
1326 * if the port refuses to come ready. XXX
1329 if (xxx AP_F_EXCLUSIVE_ACCESS)
1330 timeout -= sili_os_softsleep();
1333 sili_os_softsleep();
1334 sili_check_active_timeouts(ap);
1337 return (ccb->ccb_xa.state);
1339 } while (timeout > 0);
1342 * Don't spew if this is a probe during hard reset
1344 if (ap->ap_probe != ATA_PROBE_NEED_HARD_RESET) {
1345 kprintf("%s: Poll timeout slot %d\n",
1346 ATANAME(ap, ccb->ccb_xa.at),
1352 return(ccb->ccb_xa.state);
1356 * When polling we have to check if the currently active CCB(s)
1357 * have timed out as the callout will be deadlocked while we
1358 * hold the port lock.
1361 sili_check_active_timeouts(struct sili_port *ap)
1363 struct sili_ccb *ccb;
1367 mask = ap->ap_active;
1369 tag = ffs(mask) - 1;
1370 mask &= ~(1 << tag);
1371 ccb = &ap->ap_ccbs[tag];
1372 if (ccb->ccb_xa.flags & ATA_F_TIMEOUT_EXPIRED) {
1373 sili_core_timeout(ccb, 0);
1381 sili_start_timeout(struct sili_ccb *ccb)
1383 if (ccb->ccb_xa.flags & ATA_F_TIMEOUT_DESIRED) {
1384 ccb->ccb_xa.flags |= ATA_F_TIMEOUT_RUNNING;
1385 callout_reset(&ccb->ccb_timeout,
1386 (ccb->ccb_xa.timeout * hz + 999) / 1000,
1387 sili_ata_cmd_timeout_unserialized, ccb);
1392 sili_start(struct sili_ccb *ccb)
1394 struct sili_port *ap = ccb->ccb_port;
1396 struct sili_softc *sc = ap->ap_sc;
1399 KKASSERT(ccb->ccb_xa.state == ATA_S_PENDING);
1402 * Sync our SGE table and PRB
1404 bus_dmamap_sync(ap->ap_dmamem_prbs->adm_tag,
1405 ap->ap_dmamem_prbs->adm_map,
1406 BUS_DMASYNC_PREWRITE);
1409 * XXX dmamap for PRB XXX BUS_DMASYNC_PREWRITE
1413 * Controller will update shared memory!
1414 * XXX bus_dmamap_sync ... BUS_DMASYNC_PREREAD ...
1416 /* Prepare RFIS area for write by controller */
1419 * There's no point trying to optimize this, it only shaves a few
1420 * nanoseconds so just queue the command and call our generic issue.
1422 sili_issue_pending_commands(ap, ccb);
1427 * While holding the port lock acquire exclusive access to the port.
1429 * This is used when running the state machine to initialize and identify
1430 * targets over a port multiplier. Setting exclusive access prevents
1431 * sili_port_intr() from activating any requests sitting on the pending
1435 sili_beg_exclusive_access(struct sili_port *ap, struct ata_port *at)
1437 KKASSERT((ap->ap_flags & AP_F_EXCLUSIVE_ACCESS) == 0);
1438 ap->ap_flags |= AP_F_EXCLUSIVE_ACCESS;
1439 while (ap->ap_active) {
1440 sili_port_intr(ap, 1);
1441 sili_os_softsleep();
1446 sili_end_exclusive_access(struct sili_port *ap, struct ata_port *at)
1448 KKASSERT((ap->ap_flags & AP_F_EXCLUSIVE_ACCESS) != 0);
1449 ap->ap_flags &= ~AP_F_EXCLUSIVE_ACCESS;
1450 sili_issue_pending_commands(ap, NULL);
1455 * If ccb is not NULL enqueue and/or issue it.
1457 * If ccb is NULL issue whatever we can from the queue. However, nothing
1458 * new is issued if the exclusive access flag is set or expired ccb's are
1461 * If existing commands are still active (ap_active) we can only
1462 * issue matching new commands.
1465 sili_issue_pending_commands(struct sili_port *ap, struct sili_ccb *ccb)
1470 * If just running the queue and in exclusive access mode we
1471 * just return. Also in this case if there are any expired ccb's
1472 * we want to clear the queue so the port can be safely stopped.
1474 * XXX sili chip - expiration needs to be per-target if PM supports
1478 TAILQ_INSERT_TAIL(&ap->ap_ccb_pending, ccb, ccb_entry);
1479 } else if (ap->ap_expired) {
1484 * Pull the next ccb off the queue and run it if possible.
1485 * If the port is not ready to accept commands enable the
1486 * ready interrupt instead of starting a new command.
1488 * XXX limit ncqdepth for attached devices behind PM
1490 while ((ccb = TAILQ_FIRST(&ap->ap_ccb_pending)) != NULL) {
1492 * Port may be wedged.
1494 if ((sili_pread(ap, SILI_PREG_STATUS) &
1495 SILI_PREG_STATUS_READY) == 0) {
1496 kprintf("%s: slot %d NOT READY\n",
1497 ATANAME(ap, ccb->ccb_xa.at), ccb->ccb_slot);
1498 sili_pwrite(ap, SILI_PREG_INT_ENABLE,
1499 SILI_PREG_INT_READY);
1504 * Handle exclusivity requirements. ATA_F_EXCLUSIVE is used
1505 * when we may have to access the rfis which is stored in
1506 * the LRAM PRB. Unfortunately reading the LRAM PRB is
1507 * highly problematic, so requests (like PM requests) which
1508 * need to access the rfis use exclusive mode and then
1509 * access the copy made by the port interrupt code back in
1512 if (ap->ap_active & ~ap->ap_expired) {
1514 * There may be multiple ccb's already running,
1515 * if any are running and ap_run_flags sets
1516 * one of these flags then we know only one is
1519 * XXX Current AUTOSENSE code forces exclusivity
1520 * to simplify the code.
1522 if (ap->ap_run_flags &
1523 (ATA_F_EXCLUSIVE | ATA_F_AUTOSENSE)) {
1528 * If the ccb we want to run is exclusive and ccb's
1529 * are still active on the port, we can't queue it
1532 * XXX Current AUTOSENSE code forces exclusivity
1533 * to simplify the code.
1535 if (ccb->ccb_xa.flags &
1536 (ATA_F_EXCLUSIVE | ATA_F_AUTOSENSE)) {
1541 TAILQ_REMOVE(&ap->ap_ccb_pending, ccb, ccb_entry);
1542 ccb->ccb_xa.state = ATA_S_ONCHIP;
1543 ap->ap_active |= 1 << ccb->ccb_slot;
1544 ap->ap_active_cnt++;
1545 ap->ap_run_flags = ccb->ccb_xa.flags;
1548 * We can't use the CMD_FIFO method because it requires us
1549 * building the PRB in the LRAM, and the LRAM is buggy. So
1550 * we use host memory for the PRB.
1552 sili_pwrite(ap, SILI_PREG_CMDACT(ccb->ccb_slot),
1553 (u_int32_t)ccb->ccb_prb_paddr);
1554 sili_pwrite(ap, SILI_PREG_CMDACT(ccb->ccb_slot) + 4,
1555 (u_int32_t)(ccb->ccb_prb_paddr >> 32));
1556 /* sili_pwrite(ap, SILI_PREG_CMD_FIFO, ccb->ccb_slot); */
1557 sili_start_timeout(ccb);
1562 sili_intr(void *arg)
1564 struct sili_softc *sc = arg;
1565 struct sili_port *ap;
1570 * Check if the master enable is up, and whether any interrupts are
1573 * Clear the ints we got.
1575 if ((sc->sc_flags & SILI_F_INT_GOOD) == 0)
1577 gint = sili_read(sc, SILI_REG_GINT);
1578 if (gint == 0 || gint == 0xffffffff)
1580 sili_write(sc, SILI_REG_GINT, gint);
1583 * Process interrupts for each port in a non-blocking fashion.
1585 while (gint & SILI_REG_GINT_PORTMASK) {
1586 port = ffs(gint) - 1;
1587 ap = sc->sc_ports[port];
1589 if (sili_os_lock_port_nb(ap) == 0) {
1590 sili_port_intr(ap, 0);
1591 sili_os_unlock_port(ap);
1593 sili_port_interrupt_redisable(ap);
1594 sili_os_signal_port_thread(ap, AP_SIGF_PORTINT);
1597 gint &= ~(1 << port);
1602 * Core called from helper thread.
1605 sili_port_thread_core(struct sili_port *ap, int mask)
1608 * Process any expired timedouts.
1610 sili_os_lock_port(ap);
1611 if (mask & AP_SIGF_TIMEOUT) {
1612 sili_check_active_timeouts(ap);
1616 * Process port interrupts which require a higher level of
1619 if (mask & AP_SIGF_PORTINT) {
1620 sili_port_intr(ap, 1);
1621 sili_port_interrupt_reenable(ap);
1622 sili_os_unlock_port(ap);
1624 sili_os_unlock_port(ap);
1629 * Core per-port interrupt handler.
1631 * If blockable is 0 we cannot call sili_os_sleep() at all and we can only
1632 * deal with normal command completions which do not require blocking.
1635 sili_port_intr(struct sili_port *ap, int blockable)
1637 struct sili_softc *sc = ap->ap_sc;
1640 struct sili_ccb *ccb = NULL;
1641 struct ata_port *ccb_at = NULL;
1644 const u_int32_t blockable_mask = SILI_PREG_IST_PHYRDYCHG |
1645 SILI_PREG_IST_DEVEXCHG |
1646 SILI_PREG_IST_CERROR |
1647 SILI_PREG_IST_DECODE |
1649 SILI_PREG_IST_HANDSHK;
1650 const u_int32_t fatal_mask = SILI_PREG_IST_PHYRDYCHG |
1651 SILI_PREG_IST_DEVEXCHG |
1652 SILI_PREG_IST_DECODE |
1654 SILI_PREG_IST_HANDSHK;
1656 enum { NEED_NOTHING, NEED_HOTPLUG_INSERT,
1657 NEED_HOTPLUG_REMOVE } need = NEED_NOTHING;
1660 * NOTE: CCOMPLETE was automatically cleared when we read INT_STATUS.
1662 is = sili_pread(ap, SILI_PREG_INT_STATUS);
1663 is &= SILI_PREG_IST_MASK;
1664 if (is & SILI_PREG_IST_CCOMPLETE)
1665 sili_pwrite(ap, SILI_PREG_INT_STATUS, SILI_PREG_IST_CCOMPLETE);
1668 * If we can't block then we can't handle these here. Disable
1669 * the interrupts in question so we don't live-lock, the helper
1670 * thread will re-enable them.
1672 * If the port is in a completely failed state we do not want
1673 * to drop through to failed-command-processing if blockable is 0,
1674 * just let the thread deal with it all.
1676 * Otherwise we fall through and still handle DHRS and any commands
1677 * which completed normally. Even if we are errored we haven't
1678 * stopped the port yet so CI/SACT are still good.
1680 if (blockable == 0) {
1681 if (ap->ap_state == AP_S_FATAL_ERROR) {
1682 sili_port_interrupt_redisable(ap);
1683 sili_os_signal_port_thread(ap, AP_SIGF_PORTINT);
1684 /*is &= ~blockable_mask;*/
1687 if (is & blockable_mask) {
1688 sili_port_interrupt_redisable(ap);
1689 sili_os_signal_port_thread(ap, AP_SIGF_PORTINT);
1690 /*is &= ~blockable_mask;*/
1695 if (is & SILI_PREG_IST_CERROR) {
1697 * Command failed (blockable).
1699 * This stops command processing. We can extract the PM
1700 * target from the PMP field in SILI_PREG_CONTEXT. The
1701 * tag is not necessarily valid so don't use that.
1703 * We must then expire all CCB's for that target and resume
1704 * processing if any other targets have active commands.
1705 * Particular error codes can be recovered by reading the LOG
1708 * The expire handling code will do the rest, which is
1709 * basically to reset the port once the only active
1710 * commands remaining are all expired.
1716 target = (sili_pread(ap, SILI_PREG_CONTEXT) >>
1717 SILI_PREG_CONTEXT_PMPORT_SHIFT) &
1718 SILI_PREG_CONTEXT_PMPORT_MASK;
1719 sili_pwrite(ap, SILI_PREG_INT_STATUS, SILI_PREG_IST_CERROR);
1720 active = ap->ap_active & ~ap->ap_expired;
1721 error = sili_pread(ap, SILI_PREG_CERROR);
1722 kprintf("%s.%d target error %d active=%08x hactive=%08x "
1724 PORTNAME(ap), target, error,
1725 active, sili_pread(ap, SILI_PREG_SLOTST),
1726 sili_pread(ap, SILI_PREG_SERR), SILI_PFMT_SERR);
1729 slot = ffs(active) - 1;
1730 ccb = &ap->ap_ccbs[slot];
1731 if ((ccb_at = ccb->ccb_xa.at) == NULL)
1732 ccb_at = &ap->ap_ata[0];
1733 if (target == ccb_at->at_target) {
1734 if (ccb->ccb_xa.flags & ATA_F_NCQ &&
1735 (error == SILI_PREG_CERROR_DEVICE ||
1736 error == SILI_PREG_CERROR_SDBERROR)) {
1737 ccb_at->at_features |= ATA_PORT_F_READLOG;
1739 if (sili_core_timeout(ccb, 1) == 0)
1742 active &= ~(1 << slot);
1746 * Resume will be 0 if the timeout reinited and restarted
1747 * the port. Otherwise we resume the port to allow other
1748 * commands to complete.
1751 sili_pwrite(ap, SILI_PREG_CTL_SET, SILI_PREG_CTL_RESUME);
1755 * Device notification to us (non-blocking)
1757 * This is interrupt status SILIPREG_IST_SDB
1759 * NOTE! On some parts notification bits can get set without
1760 * generating an interrupt. It is unclear whether this is
1761 * a bug in the PM (sending a DTOH device setbits with 'N' set
1762 * and 'I' not set), or a bug in the host controller.
1764 * It only seems to occur under load.
1766 if (sc->sc_flags & SILI_F_SSNTF) {
1770 data = sili_pread(ap, SILI_PREG_SNTF);
1771 if (is & SILI_PREG_IST_SDB) {
1772 sili_pwrite(ap, SILI_PREG_INT_STATUS,
1774 is &= ~SILI_PREG_IST_SDB;
1775 xstr = " (no SDBS!)";
1780 kprintf("%s: NOTIFY %08x%s\n",
1781 PORTNAME(ap), data, xstr);
1782 sili_pwrite(ap, SILI_PREG_SNTF, data);
1783 sili_cam_changed(ap, NULL, -1);
1788 * Port change (hot-plug) (blockable).
1790 * A PCS interrupt will occur on hot-plug once communication is
1793 * A PRCS interrupt will occur on hot-unplug (and possibly also
1796 * XXX We can then check the CPS (Cold Presence State) bit, if
1797 * supported, to determine if a device is plugged in or not and do
1800 * WARNING: A PCS interrupt is cleared by clearing DIAG_X, and
1801 * can also occur if an unsolicited COMINIT is received.
1802 * If this occurs command processing is automatically
1803 * stopped (CR goes inactive) and the port must be stopped
1806 if (is & (SILI_PREG_IST_PHYRDYCHG | SILI_PREG_IST_DEVEXCHG)) {
1808 sili_pwrite(ap, SILI_PREG_SERR,
1809 (SILI_PREG_SERR_DIAG_N | SILI_PREG_SERR_DIAG_X));
1810 sili_pwrite(ap, SILI_PREG_INT_STATUS,
1811 is & (SILI_PREG_IST_PHYRDYCHG | SILI_PREG_IST_DEVEXCHG));
1813 is &= ~(SILI_PREG_IST_PHYRDYCHG | SILI_PREG_IST_DEVEXCHG);
1814 kprintf("%s: Port change\n", PORTNAME(ap));
1816 switch (sili_pread(ap, SILI_PREG_SSTS) & SILI_PREG_SSTS_DET) {
1817 case SILI_PREG_SSTS_DET_DEV:
1818 if (ap->ap_type == ATA_PORT_T_NONE &&
1819 ap->ap_probe == ATA_PROBE_FAILED) {
1820 need = NEED_HOTPLUG_INSERT;
1825 kprintf("%s: Device lost\n", PORTNAME(ap));
1826 if (ap->ap_type != ATA_PORT_T_NONE) {
1827 need = NEED_HOTPLUG_REMOVE;
1835 * Check for remaining errors - they are fatal. (blockable)
1837 if (is & fatal_mask) {
1840 sili_pwrite(ap, SILI_PREG_INT_STATUS, is & fatal_mask);
1842 serr = sili_pread(ap, SILI_PREG_SERR);
1843 kprintf("%s: Unrecoverable errors (IS: %b, SERR: %b), "
1844 "disabling port.\n",
1846 is, SILI_PFMT_INT_STATUS,
1847 serr, SILI_PFMT_SERR
1850 /* XXX try recovery first */
1855 * Fail all outstanding commands if we know the port won't recover.
1857 * We may have a ccb_at if the failed command is known and was
1858 * being sent to a device over a port multiplier (PM). In this
1859 * case if the port itself has not completely failed we fail just
1860 * the commands related to that target.
1862 if (ap->ap_state == AP_S_FATAL_ERROR &&
1863 (ap->ap_active & ~ap->ap_expired)) {
1864 kprintf("%s: Fatal port error, expiring %08x\n",
1865 PORTNAME(ap), ap->ap_active & ~ap->ap_expired);
1867 ap->ap_state = AP_S_FATAL_ERROR;
1870 * Error all the active slots. If running across a PM
1871 * try to error out just the slots related to the target.
1873 active = ap->ap_active & ~ap->ap_expired;
1876 slot = ffs(active) - 1;
1877 active &= ~(1 << slot);
1878 ccb = &ap->ap_ccbs[slot];
1879 sili_core_timeout(ccb, 1);
1884 * CCB completion (non blocking).
1886 * CCB completion is detected by noticing the slot bit in
1887 * the port slot status register has cleared while the bit
1888 * is still set in our ap_active variable.
1890 * When completing expired events we must remember to reinit
1891 * the port once everything is clear.
1893 * Due to a single-level recursion when reading the log page,
1894 * it is possible for the slot to already have been cleared
1895 * for some expired tags, do not include expired tags in
1898 active = ap->ap_active & ~sili_pread(ap, SILI_PREG_SLOTST);
1899 active &= ~ap->ap_expired;
1903 slot = ffs(active) - 1;
1904 ccb = &ap->ap_ccbs[slot];
1906 DPRINTF(SILI_D_INTR, "%s: slot %d is complete%s\n",
1907 PORTNAME(ap), slot, ccb->ccb_xa.state == ATA_S_ERROR ?
1910 active &= ~(1 << slot);
1913 * XXX sync POSTREAD for return data?
1915 ap->ap_active &= ~(1 << ccb->ccb_slot);
1916 --ap->ap_active_cnt;
1919 * Complete the ccb. If the ccb was marked expired it
1920 * may or may not have been cleared from the port,
1921 * make sure we mark it as having timed out.
1923 * In a normal completion if AUTOSENSE is set we copy
1924 * the PRB LRAM rfis back to the rfis in host-memory.
1926 * XXX Currently AUTOSENSE also forces exclusivity so we
1927 * can safely work around a hardware bug when reading
1930 if (ap->ap_expired & (1 << ccb->ccb_slot)) {
1931 ap->ap_expired &= ~(1 << ccb->ccb_slot);
1932 ccb->ccb_xa.state = ATA_S_TIMEOUT;
1934 ccb->ccb_xa.complete(&ccb->ccb_xa);
1936 if (ccb->ccb_xa.state == ATA_S_ONCHIP) {
1937 ccb->ccb_xa.state = ATA_S_COMPLETE;
1938 if (ccb->ccb_xa.flags & ATA_F_AUTOSENSE) {
1939 memcpy(ccb->ccb_xa.rfis,
1940 &ccb->ccb_prb_lram->prb_d2h,
1941 sizeof(ccb->ccb_prb_lram->prb_d2h));
1942 if (ccb->ccb_xa.state == ATA_S_TIMEOUT)
1943 ccb->ccb_xa.state = ATA_S_ERROR;
1949 if (is & SILI_PREG_IST_READY) {
1950 is &= ~SILI_PREG_IST_READY;
1951 sili_pwrite(ap, SILI_PREG_INT_DISABLE, SILI_PREG_INT_READY);
1952 sili_pwrite(ap, SILI_PREG_INT_STATUS, SILI_PREG_IST_READY);
1956 * If we had expired commands and were waiting for
1957 * remaining commands to complete, and they have now
1958 * completed, we can reinit the port.
1960 * This will also clean out the expired commands.
1961 * The timeout code also calls sili_port_reinit() if
1962 * the only commands remaining after a timeout are all
1963 * now expired commands.
1965 * Otherwise just reissue.
1967 if (ap->ap_expired && ap->ap_active == ap->ap_expired) {
1969 sili_port_reinit(ap);
1971 sili_issue_pending_commands(ap, NULL);
1975 * Cleanup. Will not be set if non-blocking.
1978 case NEED_HOTPLUG_INSERT:
1980 * A hot-plug insertion event has occured and all
1981 * outstanding commands have already been revoked.
1983 * Don't recurse if this occurs while we are
1984 * resetting the port.
1986 * Place the port in a continuous COMRESET state
1987 * until the INIT code gets to it.
1989 kprintf("%s: HOTPLUG - Device inserted\n",
1991 ap->ap_probe = ATA_PROBE_NEED_INIT;
1992 sili_cam_changed(ap, NULL, -1);
1994 case NEED_HOTPLUG_REMOVE:
1996 * A hot-plug removal event has occured and all
1997 * outstanding commands have already been revoked.
1999 * Don't recurse if this occurs while we are
2000 * resetting the port.
2002 kprintf("%s: HOTPLUG - Device removed\n",
2004 sili_port_hardstop(ap);
2005 /* ap_probe set to failed */
2006 sili_cam_changed(ap, NULL, -1);
2014 sili_get_ccb(struct sili_port *ap)
2016 struct sili_ccb *ccb;
2018 lockmgr(&ap->ap_ccb_lock, LK_EXCLUSIVE);
2019 ccb = TAILQ_FIRST(&ap->ap_ccb_free);
2021 KKASSERT(ccb->ccb_xa.state == ATA_S_PUT);
2022 TAILQ_REMOVE(&ap->ap_ccb_free, ccb, ccb_entry);
2023 ccb->ccb_xa.state = ATA_S_SETUP;
2024 ccb->ccb_xa.at = NULL;
2026 lockmgr(&ap->ap_ccb_lock, LK_RELEASE);
2032 sili_put_ccb(struct sili_ccb *ccb)
2034 struct sili_port *ap = ccb->ccb_port;
2036 ccb->ccb_xa.state = ATA_S_PUT;
2037 lockmgr(&ap->ap_ccb_lock, LK_EXCLUSIVE);
2038 TAILQ_INSERT_TAIL(&ap->ap_ccb_free, ccb, ccb_entry);
2039 lockmgr(&ap->ap_ccb_lock, LK_RELEASE);
2043 sili_get_err_ccb(struct sili_port *ap)
2045 struct sili_ccb *err_ccb;
2047 KKASSERT((ap->ap_flags & AP_F_ERR_CCB_RESERVED) == 0);
2048 ap->ap_flags |= AP_F_ERR_CCB_RESERVED;
2051 * Grab a CCB to use for error recovery. This should never fail, as
2052 * we ask atascsi to reserve one for us at init time.
2054 err_ccb = ap->ap_err_ccb;
2055 KKASSERT(err_ccb != NULL);
2056 err_ccb->ccb_xa.flags = 0;
2057 err_ccb->ccb_done = sili_empty_done;
2063 sili_put_err_ccb(struct sili_ccb *ccb)
2065 struct sili_port *ap = ccb->ccb_port;
2067 KKASSERT((ap->ap_flags & AP_F_ERR_CCB_RESERVED) != 0);
2069 KKASSERT(ccb == ap->ap_err_ccb);
2071 ap->ap_flags &= ~AP_F_ERR_CCB_RESERVED;
2075 * Read log page to get NCQ error.
2077 * Return 0 on success
2080 sili_port_read_ncq_error(struct sili_port *ap, int target)
2082 struct sili_ccb *ccb;
2083 struct ata_fis_h2d *fis;
2086 DPRINTF(SILI_D_VERBOSE, "%s: read log page\n", PORTNAME(ap));
2088 /* Prep error CCB for READ LOG EXT, page 10h, 1 sector. */
2089 ccb = sili_get_err_ccb(ap);
2090 ccb->ccb_done = sili_empty_done;
2091 ccb->ccb_xa.flags = ATA_F_NOWAIT | ATA_F_READ | ATA_F_POLL;
2092 ccb->ccb_xa.data = ap->ap_err_scratch;
2093 ccb->ccb_xa.datalen = 512;
2094 ccb->ccb_xa.complete = sili_dummy_done;
2095 ccb->ccb_xa.at = &ap->ap_ata[target];
2096 fis = &ccb->ccb_prb->prb_h2d;
2097 bzero(fis, sizeof(*fis));
2099 fis->type = ATA_FIS_TYPE_H2D;
2100 fis->flags = ATA_H2D_FLAGS_CMD | target;
2101 fis->command = ATA_C_READ_LOG_EXT;
2102 fis->lba_low = 0x10; /* queued error log page (10h) */
2103 fis->sector_count = 1; /* number of sectors (1) */
2104 fis->sector_count_exp = 0;
2105 fis->lba_mid = 0; /* starting offset */
2106 fis->lba_mid_exp = 0;
2110 * NOTE: Must use sili_quick_timeout() because we hold the err_ccb
2112 if (sili_load_prb(ccb) != 0) {
2113 status = ATA_S_ERROR;
2115 ccb->ccb_xa.state = ATA_S_PENDING;
2116 status = sili_poll(ccb, 1000, sili_quick_timeout);
2120 * Just spew if it fails, there isn't much we can do at this point.
2122 if (status != ATA_S_COMPLETE) {
2123 kprintf("%s: log page read failed, slot %d was still active.\n",
2124 ATANAME(ap, ccb->ccb_xa.at), ccb->ccb_slot);
2127 /* Done with the error CCB now. */
2128 sili_unload_prb(ccb);
2129 sili_put_err_ccb(ccb);
2131 /* Extract failed register set and tags from the scratch space. */
2132 if (status == ATA_S_COMPLETE) {
2133 struct ata_log_page_10h *log;
2136 log = (struct ata_log_page_10h *)ap->ap_err_scratch;
2137 if (log->err_regs.type & ATA_LOG_10H_TYPE_NOTQUEUED) {
2139 * Not queued bit was set - wasn't an NCQ error?
2141 * XXX This bit seems to be set a lot even for NCQ
2146 * Copy back the log record as a D2H register FIS.
2148 err_slot = log->err_regs.type &
2149 ATA_LOG_10H_TYPE_TAG_MASK;
2150 ccb = &ap->ap_ccbs[err_slot];
2151 if (ap->ap_expired & (1 << ccb->ccb_slot)) {
2152 kprintf("%s: read NCQ error page slot=%d\n",
2153 ATANAME(ap, ccb->ccb_xa.at), err_slot
2155 memcpy(&ccb->ccb_prb->prb_d2h, &log->err_regs,
2156 sizeof(struct ata_fis_d2h));
2157 ccb->ccb_prb->prb_d2h.type = ATA_FIS_TYPE_D2H;
2158 ccb->ccb_prb->prb_d2h.flags = 0;
2159 if (ccb->ccb_xa.state == ATA_S_TIMEOUT)
2160 ccb->ccb_xa.state = ATA_S_ERROR;
2162 kprintf("%s: read NCQ error page slot=%d, "
2163 "slot does not match any cmds\n",
2164 ATANAME(ccb->ccb_port, ccb->ccb_xa.at),
2173 * Allocate memory for various structures DMAd by hardware. The maximum
2174 * number of segments for these tags is 1 so the DMA memory will have a
2175 * single physical base address.
2177 struct sili_dmamem *
2178 sili_dmamem_alloc(struct sili_softc *sc, bus_dma_tag_t tag)
2180 struct sili_dmamem *adm;
2183 adm = kmalloc(sizeof(*adm), M_DEVBUF, M_INTWAIT | M_ZERO);
2185 error = bus_dmamem_alloc(tag, (void **)&adm->adm_kva,
2186 BUS_DMA_ZERO, &adm->adm_map);
2189 error = bus_dmamap_load(tag, adm->adm_map,
2191 bus_dma_tag_getmaxsize(tag),
2192 sili_dmamem_saveseg, &adm->adm_busaddr,
2197 bus_dmamap_destroy(tag, adm->adm_map);
2198 adm->adm_map = NULL;
2199 adm->adm_tag = NULL;
2200 adm->adm_kva = NULL;
2202 kfree(adm, M_DEVBUF);
2210 sili_dmamem_saveseg(void *info, bus_dma_segment_t *segs, int nsegs, int error)
2212 KKASSERT(error == 0);
2213 KKASSERT(nsegs == 1);
2214 *(bus_addr_t *)info = segs->ds_addr;
2219 sili_dmamem_free(struct sili_softc *sc, struct sili_dmamem *adm)
2222 bus_dmamap_unload(adm->adm_tag, adm->adm_map);
2223 bus_dmamap_destroy(adm->adm_tag, adm->adm_map);
2224 adm->adm_map = NULL;
2225 adm->adm_tag = NULL;
2226 adm->adm_kva = NULL;
2228 kfree(adm, M_DEVBUF);
2232 sili_read(struct sili_softc *sc, bus_size_t r)
2234 bus_space_barrier(sc->sc_iot, sc->sc_ioh, r, 4,
2235 BUS_SPACE_BARRIER_READ);
2236 return (bus_space_read_4(sc->sc_iot, sc->sc_ioh, r));
2240 sili_write(struct sili_softc *sc, bus_size_t r, u_int32_t v)
2242 bus_space_write_4(sc->sc_iot, sc->sc_ioh, r, v);
2243 bus_space_barrier(sc->sc_iot, sc->sc_ioh, r, 4,
2244 BUS_SPACE_BARRIER_WRITE);
2248 sili_pread(struct sili_port *ap, bus_size_t r)
2250 bus_space_barrier(ap->ap_sc->sc_iot, ap->ap_ioh, r, 4,
2251 BUS_SPACE_BARRIER_READ);
2252 return (bus_space_read_4(ap->ap_sc->sc_iot, ap->ap_ioh, r));
2256 sili_pwrite(struct sili_port *ap, bus_size_t r, u_int32_t v)
2258 bus_space_write_4(ap->ap_sc->sc_iot, ap->ap_ioh, r, v);
2259 bus_space_barrier(ap->ap_sc->sc_iot, ap->ap_ioh, r, 4,
2260 BUS_SPACE_BARRIER_WRITE);
2264 * Wait up to (timeout) milliseconds for the masked port register to
2267 * Timeout is in milliseconds.
2270 sili_pwait_eq(struct sili_port *ap, int timeout,
2271 bus_size_t r, u_int32_t mask, u_int32_t target)
2276 * Loop hard up to 100uS
2278 for (t = 0; t < 100; ++t) {
2279 if ((sili_pread(ap, r) & mask) == target)
2281 sili_os_hardsleep(1); /* us */
2285 timeout -= sili_os_softsleep();
2286 if ((sili_pread(ap, r) & mask) == target)
2288 } while (timeout > 0);
2293 sili_wait_ne(struct sili_softc *sc, bus_size_t r, u_int32_t mask,
2299 * Loop hard up to 100uS
2301 for (t = 0; t < 100; ++t) {
2302 if ((sili_read(sc, r) & mask) != target)
2304 sili_os_hardsleep(1); /* us */
2308 * And one millisecond the slow way
2312 t -= sili_os_softsleep();
2313 if ((sili_read(sc, r) & mask) != target)
2322 * Acquire an ata transfer.
2324 * Pass a NULL at for direct-attached transfers, and a non-NULL at for
2325 * targets that go through the port multiplier.
2328 sili_ata_get_xfer(struct sili_port *ap, struct ata_port *at)
2330 struct sili_ccb *ccb;
2332 ccb = sili_get_ccb(ap);
2334 DPRINTF(SILI_D_XFER, "%s: sili_ata_get_xfer: NULL ccb\n",
2339 DPRINTF(SILI_D_XFER, "%s: sili_ata_get_xfer got slot %d\n",
2340 PORTNAME(ap), ccb->ccb_slot);
2342 bzero(ccb->ccb_xa.fis, sizeof(*ccb->ccb_xa.fis));
2343 ccb->ccb_xa.at = at;
2344 ccb->ccb_xa.fis->type = ATA_FIS_TYPE_H2D;
2346 return (&ccb->ccb_xa);
2350 sili_ata_put_xfer(struct ata_xfer *xa)
2352 struct sili_ccb *ccb = (struct sili_ccb *)xa;
2354 DPRINTF(SILI_D_XFER, "sili_ata_put_xfer slot %d\n", ccb->ccb_slot);
2360 sili_ata_cmd(struct ata_xfer *xa)
2362 struct sili_ccb *ccb = (struct sili_ccb *)xa;
2364 KKASSERT(xa->state == ATA_S_SETUP);
2366 if (ccb->ccb_port->ap_state == AP_S_FATAL_ERROR)
2369 kprintf("%s: started std command %b ccb %d ccb_at %p %d\n",
2370 ATANAME(ccb->ccb_port, ccb->ccb_xa.at),
2371 sili_pread(ccb->ccb_port, SILI_PREG_CMD), SILI_PFMT_CMD,
2374 ccb->ccb_xa.at ? ccb->ccb_xa.at->at_target : -1);
2377 ccb->ccb_done = sili_ata_cmd_done;
2379 if (sili_load_prb(ccb) != 0)
2382 xa->state = ATA_S_PENDING;
2384 if (xa->flags & ATA_F_POLL)
2385 return (sili_poll(ccb, xa->timeout, sili_ata_cmd_timeout));
2388 KKASSERT((xa->flags & ATA_F_TIMEOUT_EXPIRED) == 0);
2389 xa->flags |= ATA_F_TIMEOUT_DESIRED;
2396 xa->state = ATA_S_ERROR;
2399 return (ATA_S_ERROR);
2403 sili_ata_cmd_done(struct sili_ccb *ccb)
2405 struct ata_xfer *xa = &ccb->ccb_xa;
2408 * NOTE: callout does not lock port and may race us modifying
2409 * the flags, so make sure its stopped.
2411 if (xa->flags & ATA_F_TIMEOUT_RUNNING) {
2412 callout_stop(&ccb->ccb_timeout);
2413 xa->flags &= ~ATA_F_TIMEOUT_RUNNING;
2415 xa->flags &= ~(ATA_F_TIMEOUT_DESIRED | ATA_F_TIMEOUT_EXPIRED);
2417 KKASSERT(xa->state != ATA_S_ONCHIP);
2418 sili_unload_prb(ccb);
2420 if (xa->state != ATA_S_TIMEOUT)
2425 * Timeout from callout, MPSAFE - nothing can mess with the CCB's flags
2426 * while the callout is runing.
2428 * We can't safely get the port lock here or delay, we could block
2429 * the callout thread.
2432 sili_ata_cmd_timeout_unserialized(void *arg)
2434 struct sili_ccb *ccb = arg;
2435 struct sili_port *ap = ccb->ccb_port;
2437 ccb->ccb_xa.flags &= ~ATA_F_TIMEOUT_RUNNING;
2438 ccb->ccb_xa.flags |= ATA_F_TIMEOUT_EXPIRED;
2439 sili_os_signal_port_thread(ap, AP_SIGF_TIMEOUT);
2443 sili_ata_cmd_timeout(struct sili_ccb *ccb)
2445 sili_core_timeout(ccb, 0);
2449 * Timeout code, typically called when the port command processor is running.
2451 * Returns 0 if all timeout processing completed, non-zero if it is still
2456 sili_core_timeout(struct sili_ccb *ccb, int really_error)
2458 struct ata_xfer *xa = &ccb->ccb_xa;
2459 struct sili_port *ap = ccb->ccb_port;
2460 struct ata_port *at;
2462 at = ccb->ccb_xa.at;
2464 kprintf("%s: CMD %s state=%d slot=%d\n"
2469 (really_error ? "ERROR" : "TIMEOUT"),
2470 ccb->ccb_xa.state, ccb->ccb_slot,
2473 sili_pread(ap, SILI_PREG_SLOTST)
2477 * NOTE: Timeout will not be running if the command was polled.
2478 * If we got here at least one of these flags should be set.
2480 * However, it might be running if we are called from the
2481 * interrupt error handling code.
2483 KKASSERT(xa->flags & (ATA_F_POLL | ATA_F_TIMEOUT_DESIRED |
2484 ATA_F_TIMEOUT_RUNNING));
2485 if (xa->flags & ATA_F_TIMEOUT_RUNNING) {
2486 callout_stop(&ccb->ccb_timeout);
2487 xa->flags &= ~ATA_F_TIMEOUT_RUNNING;
2489 xa->flags &= ~ATA_F_TIMEOUT_EXPIRED;
2491 if (ccb->ccb_xa.state == ATA_S_PENDING) {
2492 TAILQ_REMOVE(&ap->ap_ccb_pending, ccb, ccb_entry);
2493 ccb->ccb_xa.state = ATA_S_TIMEOUT;
2496 sili_issue_pending_commands(ap, NULL);
2499 if (ccb->ccb_xa.state != ATA_S_ONCHIP) {
2500 kprintf("%s: Unexpected state during timeout: %d\n",
2501 ATANAME(ap, at), ccb->ccb_xa.state);
2506 * We can't process timeouts while other commands are running.
2508 ap->ap_expired |= 1 << ccb->ccb_slot;
2510 if (ap->ap_active != ap->ap_expired) {
2511 kprintf("%s: Deferred timeout until its safe, slot %d\n",
2512 ATANAME(ap, at), ccb->ccb_slot);
2517 * We have to issue a Port reinit. We don't read an error log
2518 * page for timeouts. Reiniting the port will clear all pending
2521 sili_port_reinit(ap);
2526 * Used by the softreset, pm_port_probe, and read_ncq_error only, in very
2527 * specialized, controlled circumstances.
2530 sili_quick_timeout(struct sili_ccb *ccb)
2532 struct sili_port *ap = ccb->ccb_port;
2534 switch (ccb->ccb_xa.state) {
2536 TAILQ_REMOVE(&ap->ap_ccb_pending, ccb, ccb_entry);
2537 ccb->ccb_xa.state = ATA_S_TIMEOUT;
2540 KKASSERT((ap->ap_active & ~ap->ap_expired) ==
2541 (1 << ccb->ccb_slot));
2542 ccb->ccb_xa.state = ATA_S_TIMEOUT;
2543 ap->ap_active &= ~(1 << ccb->ccb_slot);
2544 KKASSERT(ap->ap_active_cnt > 0);
2545 --ap->ap_active_cnt;
2546 sili_port_reinit(ap);
2549 panic("%s: sili_quick_timeout: ccb in bad state %d",
2550 ATANAME(ap, ccb->ccb_xa.at), ccb->ccb_xa.state);
2555 sili_dummy_done(struct ata_xfer *xa)
2560 sili_empty_done(struct sili_ccb *ccb)