File: [cvs.NetBSD.org] / src / sys / dev / ic / ahcisata_core.c (download)
Revision 1.75.4.5, Fri Dec 30 14:39:09 2022 UTC (15 months, 2 weeks ago) by martin
Branch: netbsd-9
Changes since 1.75.4.4: +21 -37
lines
Pull up following revision(s) (requested by tsutsui in ticket #1557):
sys/dev/ic/ahcisata_core.c: revision 1.83
sys/dev/ic/ahcisata_core.c: revision 1.102
sys/dev/ata/ata.c: revision 1.164
sys/dev/ata/ata_wdc.c: revision 1.115
sys/dev/ata/ata_recovery.c: revision 1.4
sys/dev/ic/siisata.c: revision 1.42
sys/dev/ic/wdc.c: revision 1.308
sys/dev/ic/mvsata.c: revision 1.56
sys/dev/scsipi/atapi_wdc.c: revision 1.138
sys/dev/ic/siisata.c: revision 1.49
sys/dev/ata/atavar.h: revision 1.105
sys/dev/ata/wd.c: revision 1.460
sys/dev/ata/ata.c: revision 1.155
sys/dev/ata/wd.c: revision 1.462
sys/dev/ata/atavar.h: revision 1.109
sys/dev/ata/satapmp_subr.c: revision 1.16
sys/dev/ic/wdc.c: revision 1.299
sys/dev/ic/ahcisata_core.c: revision 1.93
sys/dev/ata/ata_wdc.c: revision 1.120
sys/dev/ic/wdcvar.h: revision 1.100
sys/dev/scsipi/atapi_wdc.c: revision 1.141
sys/dev/ic/mvsata.c: revision 1.61
sys/dev/usb/umass_isdata.c (apply patch)
drop wd lock in wdstart1() before calling the ata_bio hook; when called
from ata thread context, that can still need to sleep for wdc attachments
in wdcwait()
fix use-after-free for ata xfer on bio submission found by KASAN
driver ata_bio hooks read parts of the xfer after ata_exec_xfer()
call in order to determine return value, change so that the hook
doesn't return any value - callers do not care already,
as all I/O requests are asynchronous
this problem was uncovered by recent change for wd(4) to not hold
wd mutex during ata_bio call, the interrupt for the xfer might
thus actually fire immediately
adjust also ata_exec_command driver hooks similarily - remove all
completion and waiting logic from drivers, upper layer ata code
using AT_WAIT/AT_POLL changed to call ata_wait_cmd() itself
PR kern/55169 by Nick Hudson
Function declaration formating whitespace consistency. NFCI.
PR kern/56403
Fix kernel freeze for wdc(4) variants with ATAC_CAP_NOIRQ:
(1) Change ata_xfer_ops:c_poll from void to int function. When it returns
ATAPOLL_AGAIN, let ata_xfer_start() iterate itself again.
(2) Let wdc_ata_bio_poll() return ATAPOLL_AGAIN until ATA_ITSDONE is
achieved.
A similar change has been made for mvsata(4) (see mvsata_bio_poll()),
and no functional changes for other devices.
This is how the drivers worked before jdolecek-ncq branch was merged.
Note that this changes are less likely to cause infinite recursion:
(1) wdc_ata_bio_intr() called from wdc_ata_bio_poll() asserts ATA_ITSDONE
in its error handling paths via wdc_ata_bio_done().
(2) Return value from c_start (= wdc_ata_bio_start()) is checked in
ata_xfer_start().
Therefore, errors encountered in ata_xfer_ops:c_poll and c_start routines
terminate the recursion for wdc(4). The situation is similar for mvsata(4).
Still, there is a possibility where ata_xfer_start() takes long time to
finish a normal operation. This can result in a delayed response for lower
priority interrupts. But, I've never observed such a situation, even when
heavy thrashing takes place for swap partition in wd(4).
"Go ahead" by jdolecek@.
|
/* $NetBSD: ahcisata_core.c,v 1.75.4.5 2022/12/30 14:39:09 martin Exp $ */
/*
* Copyright (c) 2006 Manuel Bouyer.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: ahcisata_core.c,v 1.75.4.5 2022/12/30 14:39:09 martin Exp $");
#include <sys/types.h>
#include <sys/malloc.h>
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/systm.h>
#include <sys/disklabel.h>
#include <sys/proc.h>
#include <sys/buf.h>
#include <dev/ata/atareg.h>
#include <dev/ata/satavar.h>
#include <dev/ata/satareg.h>
#include <dev/ata/satafisvar.h>
#include <dev/ata/satafisreg.h>
#include <dev/ata/satapmpreg.h>
#include <dev/ic/ahcisatavar.h>
#include <dev/ic/wdcreg.h>
#include <dev/scsipi/scsi_all.h> /* for SCSI status */
#include "atapibus.h"
#ifdef AHCI_DEBUG
int ahcidebug_mask = 0;
#endif
static void ahci_probe_drive(struct ata_channel *);
static void ahci_setup_channel(struct ata_channel *);
static void ahci_ata_bio(struct ata_drive_datas *, struct ata_xfer *);
static int ahci_do_reset_drive(struct ata_channel *, int, int, uint32_t *,
uint8_t);
static void ahci_reset_drive(struct ata_drive_datas *, int, uint32_t *);
static void ahci_reset_channel(struct ata_channel *, int);
static void ahci_exec_command(struct ata_drive_datas *, struct ata_xfer *);
static int ahci_ata_addref(struct ata_drive_datas *);
static void ahci_ata_delref(struct ata_drive_datas *);
static void ahci_killpending(struct ata_drive_datas *);
static int ahci_cmd_start(struct ata_channel *, struct ata_xfer *);
static int ahci_cmd_complete(struct ata_channel *, struct ata_xfer *, int);
static int ahci_cmd_poll(struct ata_channel *, struct ata_xfer *);
static void ahci_cmd_abort(struct ata_channel *, struct ata_xfer *);
static void ahci_cmd_done(struct ata_channel *, struct ata_xfer *);
static void ahci_cmd_done_end(struct ata_channel *, struct ata_xfer *);
static void ahci_cmd_kill_xfer(struct ata_channel *, struct ata_xfer *, int);
static int ahci_bio_start(struct ata_channel *, struct ata_xfer *);
static int ahci_bio_poll(struct ata_channel *, struct ata_xfer *);
static void ahci_bio_abort(struct ata_channel *, struct ata_xfer *);
static int ahci_bio_complete(struct ata_channel *, struct ata_xfer *, int);
static void ahci_bio_kill_xfer(struct ata_channel *, struct ata_xfer *, int) ;
static void ahci_channel_stop(struct ahci_softc *, struct ata_channel *, int);
static void ahci_channel_start(struct ahci_softc *, struct ata_channel *,
int, int);
static void ahci_channel_recover(struct ata_channel *, int, uint32_t);
static int ahci_dma_setup(struct ata_channel *, int, void *, size_t, int);
static int ahci_intr_port_common(struct ata_channel *);
#if NATAPIBUS > 0
static void ahci_atapibus_attach(struct atabus_softc *);
static void ahci_atapi_kill_pending(struct scsipi_periph *);
static void ahci_atapi_minphys(struct buf *);
static void ahci_atapi_scsipi_request(struct scsipi_channel *,
scsipi_adapter_req_t, void *);
static int ahci_atapi_start(struct ata_channel *, struct ata_xfer *);
static int ahci_atapi_poll(struct ata_channel *, struct ata_xfer *);
static void ahci_atapi_abort(struct ata_channel *, struct ata_xfer *);
static int ahci_atapi_complete(struct ata_channel *, struct ata_xfer *, int);
static void ahci_atapi_kill_xfer(struct ata_channel *, struct ata_xfer *, int);
static void ahci_atapi_probe_device(struct atapibus_softc *, int);
static const struct scsipi_bustype ahci_atapi_bustype = {
SCSIPI_BUSTYPE_ATAPI,
atapi_scsipi_cmd,
atapi_interpret_sense,
atapi_print_addr,
ahci_atapi_kill_pending,
NULL,
};
#endif /* NATAPIBUS */
#define ATA_DELAY 10000 /* 10s for a drive I/O */
#define ATA_RESET_DELAY 31000 /* 31s for a drive reset */
#define AHCI_RST_WAIT (ATA_RESET_DELAY / 10)
const struct ata_bustype ahci_ata_bustype = {
SCSIPI_BUSTYPE_ATA,
ahci_ata_bio,
ahci_reset_drive,
ahci_reset_channel,
ahci_exec_command,
ata_get_params,
ahci_ata_addref,
ahci_ata_delref,
ahci_killpending,
ahci_channel_recover,
};
static void ahci_setup_port(struct ahci_softc *sc, int i);
static void
ahci_enable(struct ahci_softc *sc)
{
uint32_t ghc;
ghc = AHCI_READ(sc, AHCI_GHC);
if (!(ghc & AHCI_GHC_AE)) {
ghc |= AHCI_GHC_AE;
AHCI_WRITE(sc, AHCI_GHC, ghc);
}
}
static int
ahci_reset(struct ahci_softc *sc)
{
int i;
/* reset controller */
AHCI_WRITE(sc, AHCI_GHC, AHCI_GHC_HR);
/* wait up to 1s for reset to complete */
for (i = 0; i < 1000; i++) {
delay(1000);
if ((AHCI_READ(sc, AHCI_GHC) & AHCI_GHC_HR) == 0)
break;
}
if ((AHCI_READ(sc, AHCI_GHC) & AHCI_GHC_HR)) {
aprint_error("%s: reset failed\n", AHCINAME(sc));
return -1;
}
/* enable ahci mode */
ahci_enable(sc);
if (sc->sc_save_init_data) {
AHCI_WRITE(sc, AHCI_CAP, sc->sc_init_data.cap);
if (sc->sc_init_data.cap2)
AHCI_WRITE(sc, AHCI_CAP2, sc->sc_init_data.cap2);
AHCI_WRITE(sc, AHCI_PI, sc->sc_init_data.ports);
}
/* Check if hardware reverted to single message MSI */
sc->sc_ghc_mrsm = ISSET(AHCI_READ(sc, AHCI_GHC), AHCI_GHC_MRSM);
return 0;
}
static void
ahci_setup_ports(struct ahci_softc *sc)
{
int i, port;
for (i = 0, port = 0; i < AHCI_MAX_PORTS; i++) {
if ((sc->sc_ahci_ports & (1U << i)) == 0)
continue;
if (port >= sc->sc_atac.atac_nchannels) {
aprint_error("%s: more ports than announced\n",
AHCINAME(sc));
break;
}
ahci_setup_port(sc, i);
port++;
}
}
static void
ahci_reprobe_drives(struct ahci_softc *sc)
{
int i, port;
struct ahci_channel *achp;
struct ata_channel *chp;
for (i = 0, port = 0; i < AHCI_MAX_PORTS; i++) {
if ((sc->sc_ahci_ports & (1U << i)) == 0)
continue;
if (port >= sc->sc_atac.atac_nchannels) {
aprint_error("%s: more ports than announced\n",
AHCINAME(sc));
break;
}
achp = &sc->sc_channels[i];
chp = &achp->ata_channel;
ahci_probe_drive(chp);
port++;
}
}
static void
ahci_setup_port(struct ahci_softc *sc, int i)
{
struct ahci_channel *achp;
achp = &sc->sc_channels[i];
AHCI_WRITE(sc, AHCI_P_CLB(i), achp->ahcic_bus_cmdh);
AHCI_WRITE(sc, AHCI_P_CLBU(i), (uint64_t)achp->ahcic_bus_cmdh>>32);
AHCI_WRITE(sc, AHCI_P_FB(i), achp->ahcic_bus_rfis);
AHCI_WRITE(sc, AHCI_P_FBU(i), (uint64_t)achp->ahcic_bus_rfis>>32);
}
static void
ahci_enable_intrs(struct ahci_softc *sc)
{
/* clear interrupts */
AHCI_WRITE(sc, AHCI_IS, AHCI_READ(sc, AHCI_IS));
/* enable interrupts */
AHCI_WRITE(sc, AHCI_GHC, AHCI_READ(sc, AHCI_GHC) | AHCI_GHC_IE);
}
void
ahci_attach(struct ahci_softc *sc)
{
uint32_t ahci_rev;
int i, j, port;
struct ahci_channel *achp;
struct ata_channel *chp;
int error;
int dmasize;
char buf[128];
void *cmdhp;
void *cmdtblp;
if (sc->sc_save_init_data) {
ahci_enable(sc);
sc->sc_init_data.cap = AHCI_READ(sc, AHCI_CAP);
sc->sc_init_data.ports = AHCI_READ(sc, AHCI_PI);
ahci_rev = AHCI_READ(sc, AHCI_VS);
if (AHCI_VS_MJR(ahci_rev) > 1 ||
(AHCI_VS_MJR(ahci_rev) == 1 && AHCI_VS_MNR(ahci_rev) >= 20)) {
sc->sc_init_data.cap2 = AHCI_READ(sc, AHCI_CAP2);
} else {
sc->sc_init_data.cap2 = 0;
}
if (sc->sc_init_data.ports == 0) {
sc->sc_init_data.ports = sc->sc_ahci_ports;
}
}
if (ahci_reset(sc) != 0)
return;
sc->sc_ahci_cap = AHCI_READ(sc, AHCI_CAP);
if (sc->sc_ahci_quirks & AHCI_QUIRK_BADPMP) {
aprint_verbose_dev(sc->sc_atac.atac_dev,
"ignoring broken port multiplier support\n");
sc->sc_ahci_cap &= ~AHCI_CAP_SPM;
}
if (sc->sc_ahci_quirks & AHCI_QUIRK_BADNCQ) {
aprint_verbose_dev(sc->sc_atac.atac_dev,
"ignoring broken NCQ support\n");
sc->sc_ahci_cap &= ~AHCI_CAP_NCQ;
}
sc->sc_atac.atac_nchannels = (sc->sc_ahci_cap & AHCI_CAP_NPMASK) + 1;
sc->sc_ncmds = ((sc->sc_ahci_cap & AHCI_CAP_NCS) >> 8) + 1;
ahci_rev = AHCI_READ(sc, AHCI_VS);
snprintb(buf, sizeof(buf), "\177\020"
/* "f\000\005NP\0" */
"b\005SXS\0"
"b\006EMS\0"
"b\007CCCS\0"
/* "f\010\005NCS\0" */
"b\015PSC\0"
"b\016SSC\0"
"b\017PMD\0"
"b\020FBSS\0"
"b\021SPM\0"
"b\022SAM\0"
"b\023SNZO\0"
"f\024\003ISS\0"
"=\001Gen1\0"
"=\002Gen2\0"
"=\003Gen3\0"
"b\030SCLO\0"
"b\031SAL\0"
"b\032SALP\0"
"b\033SSS\0"
"b\034SMPS\0"
"b\035SSNTF\0"
"b\036SNCQ\0"
"b\037S64A\0"
"\0", sc->sc_ahci_cap);
aprint_normal_dev(sc->sc_atac.atac_dev, "AHCI revision %u.%u"
", %d port%s, %d slot%s, CAP %s\n",
AHCI_VS_MJR(ahci_rev), AHCI_VS_MNR(ahci_rev),
sc->sc_atac.atac_nchannels,
(sc->sc_atac.atac_nchannels == 1 ? "" : "s"),
sc->sc_ncmds, (sc->sc_ncmds == 1 ? "" : "s"), buf);
sc->sc_atac.atac_cap = ATAC_CAP_DATA16 | ATAC_CAP_DMA | ATAC_CAP_UDMA
| ((sc->sc_ahci_cap & AHCI_CAP_NCQ) ? ATAC_CAP_NCQ : 0);
sc->sc_atac.atac_cap |= sc->sc_atac_capflags;
sc->sc_atac.atac_pio_cap = 4;
sc->sc_atac.atac_dma_cap = 2;
sc->sc_atac.atac_udma_cap = 6;
sc->sc_atac.atac_channels = sc->sc_chanarray;
sc->sc_atac.atac_probe = ahci_probe_drive;
sc->sc_atac.atac_bustype_ata = &ahci_ata_bustype;
sc->sc_atac.atac_set_modes = ahci_setup_channel;
#if NATAPIBUS > 0
sc->sc_atac.atac_atapibus_attach = ahci_atapibus_attach;
#endif
dmasize =
(AHCI_RFIS_SIZE + AHCI_CMDH_SIZE) * sc->sc_atac.atac_nchannels;
error = bus_dmamem_alloc(sc->sc_dmat, dmasize, PAGE_SIZE, 0,
&sc->sc_cmd_hdr_seg, 1, &sc->sc_cmd_hdr_nseg, BUS_DMA_NOWAIT);
if (error) {
aprint_error("%s: unable to allocate command header memory"
", error=%d\n", AHCINAME(sc), error);
return;
}
error = bus_dmamem_map(sc->sc_dmat, &sc->sc_cmd_hdr_seg,
sc->sc_cmd_hdr_nseg, dmasize,
&cmdhp, BUS_DMA_NOWAIT|BUS_DMA_COHERENT);
if (error) {
aprint_error("%s: unable to map command header memory"
", error=%d\n", AHCINAME(sc), error);
return;
}
error = bus_dmamap_create(sc->sc_dmat, dmasize, 1, dmasize, 0,
BUS_DMA_NOWAIT, &sc->sc_cmd_hdrd);
if (error) {
aprint_error("%s: unable to create command header map"
", error=%d\n", AHCINAME(sc), error);
return;
}
error = bus_dmamap_load(sc->sc_dmat, sc->sc_cmd_hdrd,
cmdhp, dmasize, NULL, BUS_DMA_NOWAIT);
if (error) {
aprint_error("%s: unable to load command header map"
", error=%d\n", AHCINAME(sc), error);
return;
}
sc->sc_cmd_hdr = cmdhp;
memset(cmdhp, 0, dmasize);
bus_dmamap_sync(sc->sc_dmat, sc->sc_cmd_hdrd, 0, dmasize,
BUS_DMASYNC_PREWRITE);
ahci_enable_intrs(sc);
if (sc->sc_ahci_ports == 0) {
sc->sc_ahci_ports = AHCI_READ(sc, AHCI_PI);
AHCIDEBUG_PRINT(("active ports %#x\n", sc->sc_ahci_ports),
DEBUG_PROBE);
}
for (i = 0, port = 0; i < AHCI_MAX_PORTS; i++) {
if ((sc->sc_ahci_ports & (1U << i)) == 0)
continue;
if (port >= sc->sc_atac.atac_nchannels) {
aprint_error("%s: more ports than announced\n",
AHCINAME(sc));
break;
}
/* Optional intr establish per active port */
if (sc->sc_intr_establish && sc->sc_intr_establish(sc, i) != 0){
aprint_error("%s: intr establish hook failed\n",
AHCINAME(sc));
break;
}
achp = &sc->sc_channels[i];
chp = &achp->ata_channel;
sc->sc_chanarray[i] = chp;
chp->ch_channel = i;
chp->ch_atac = &sc->sc_atac;
chp->ch_queue = ata_queue_alloc(sc->sc_ncmds);
if (chp->ch_queue == NULL) {
aprint_error("%s port %d: can't allocate memory for "
"command queue", AHCINAME(sc), i);
break;
}
dmasize = AHCI_CMDTBL_SIZE * sc->sc_ncmds;
error = bus_dmamem_alloc(sc->sc_dmat, dmasize, PAGE_SIZE, 0,
&achp->ahcic_cmd_tbl_seg, 1, &achp->ahcic_cmd_tbl_nseg,
BUS_DMA_NOWAIT);
if (error) {
aprint_error("%s: unable to allocate command table "
"memory, error=%d\n", AHCINAME(sc), error);
break;
}
error = bus_dmamem_map(sc->sc_dmat, &achp->ahcic_cmd_tbl_seg,
achp->ahcic_cmd_tbl_nseg, dmasize,
&cmdtblp, BUS_DMA_NOWAIT|BUS_DMA_COHERENT);
if (error) {
aprint_error("%s: unable to map command table memory"
", error=%d\n", AHCINAME(sc), error);
break;
}
error = bus_dmamap_create(sc->sc_dmat, dmasize, 1, dmasize, 0,
BUS_DMA_NOWAIT, &achp->ahcic_cmd_tbld);
if (error) {
aprint_error("%s: unable to create command table map"
", error=%d\n", AHCINAME(sc), error);
break;
}
error = bus_dmamap_load(sc->sc_dmat, achp->ahcic_cmd_tbld,
cmdtblp, dmasize, NULL, BUS_DMA_NOWAIT);
if (error) {
aprint_error("%s: unable to load command table map"
", error=%d\n", AHCINAME(sc), error);
break;
}
memset(cmdtblp, 0, dmasize);
bus_dmamap_sync(sc->sc_dmat, achp->ahcic_cmd_tbld, 0,
dmasize, BUS_DMASYNC_PREWRITE);
achp->ahcic_cmdh = (struct ahci_cmd_header *)
((char *)cmdhp + AHCI_CMDH_SIZE * port);
achp->ahcic_bus_cmdh = sc->sc_cmd_hdrd->dm_segs[0].ds_addr +
AHCI_CMDH_SIZE * port;
achp->ahcic_rfis = (struct ahci_r_fis *)
((char *)cmdhp +
AHCI_CMDH_SIZE * sc->sc_atac.atac_nchannels +
AHCI_RFIS_SIZE * port);
achp->ahcic_bus_rfis = sc->sc_cmd_hdrd->dm_segs[0].ds_addr +
AHCI_CMDH_SIZE * sc->sc_atac.atac_nchannels +
AHCI_RFIS_SIZE * port;
AHCIDEBUG_PRINT(("port %d cmdh %p (0x%" PRIx64 ") "
"rfis %p (0x%" PRIx64 ")\n", i,
achp->ahcic_cmdh, (uint64_t)achp->ahcic_bus_cmdh,
achp->ahcic_rfis, (uint64_t)achp->ahcic_bus_rfis),
DEBUG_PROBE);
for (j = 0; j < sc->sc_ncmds; j++) {
achp->ahcic_cmd_tbl[j] = (struct ahci_cmd_tbl *)
((char *)cmdtblp + AHCI_CMDTBL_SIZE * j);
achp->ahcic_bus_cmd_tbl[j] =
achp->ahcic_cmd_tbld->dm_segs[0].ds_addr +
AHCI_CMDTBL_SIZE * j;
achp->ahcic_cmdh[j].cmdh_cmdtba =
htole64(achp->ahcic_bus_cmd_tbl[j]);
AHCIDEBUG_PRINT(("port %d/%d tbl %p (0x%" PRIx64 ")\n", i, j,
achp->ahcic_cmd_tbl[j],
(uint64_t)achp->ahcic_bus_cmd_tbl[j]), DEBUG_PROBE);
/* The xfer DMA map */
error = bus_dmamap_create(sc->sc_dmat, MAXPHYS,
AHCI_NPRD, 0x400000 /* 4MB */, 0,
BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW,
&achp->ahcic_datad[j]);
if (error) {
aprint_error("%s: couldn't alloc xfer DMA map, "
"error=%d\n", AHCINAME(sc), error);
goto end;
}
}
ahci_setup_port(sc, i);
if (bus_space_subregion(sc->sc_ahcit, sc->sc_ahcih,
AHCI_P_SSTS(i), 4, &achp->ahcic_sstatus) != 0) {
aprint_error("%s: couldn't map port %d "
"sata_status regs\n", AHCINAME(sc), i);
break;
}
if (bus_space_subregion(sc->sc_ahcit, sc->sc_ahcih,
AHCI_P_SCTL(i), 4, &achp->ahcic_scontrol) != 0) {
aprint_error("%s: couldn't map port %d "
"sata_control regs\n", AHCINAME(sc), i);
break;
}
if (bus_space_subregion(sc->sc_ahcit, sc->sc_ahcih,
AHCI_P_SERR(i), 4, &achp->ahcic_serror) != 0) {
aprint_error("%s: couldn't map port %d "
"sata_error regs\n", AHCINAME(sc), i);
break;
}
ata_channel_attach(chp);
port++;
end:
continue;
}
}
void
ahci_childdetached(struct ahci_softc *sc, device_t child)
{
struct ahci_channel *achp;
struct ata_channel *chp;
for (int i = 0; i < AHCI_MAX_PORTS; i++) {
achp = &sc->sc_channels[i];
chp = &achp->ata_channel;
if ((sc->sc_ahci_ports & (1U << i)) == 0)
continue;
if (child == chp->atabus)
chp->atabus = NULL;
}
}
int
ahci_detach(struct ahci_softc *sc, int flags)
{
struct atac_softc *atac;
struct ahci_channel *achp;
struct ata_channel *chp;
struct scsipi_adapter *adapt;
int i, j, port;
int error;
atac = &sc->sc_atac;
adapt = &atac->atac_atapi_adapter._generic;
for (i = 0, port = 0; i < AHCI_MAX_PORTS; i++) {
achp = &sc->sc_channels[i];
chp = &achp->ata_channel;
if ((sc->sc_ahci_ports & (1U << i)) == 0)
continue;
if (port >= sc->sc_atac.atac_nchannels) {
aprint_error("%s: more ports than announced\n",
AHCINAME(sc));
break;
}
if (chp->atabus != NULL) {
if ((error = config_detach(chp->atabus, flags)) != 0)
return error;
KASSERT(chp->atabus == NULL);
}
if (chp->ch_flags & ATACH_DETACHED)
continue;
for (j = 0; j < sc->sc_ncmds; j++)
bus_dmamap_destroy(sc->sc_dmat, achp->ahcic_datad[j]);
bus_dmamap_unload(sc->sc_dmat, achp->ahcic_cmd_tbld);
bus_dmamap_destroy(sc->sc_dmat, achp->ahcic_cmd_tbld);
bus_dmamem_unmap(sc->sc_dmat, achp->ahcic_cmd_tbl[0],
AHCI_CMDTBL_SIZE * sc->sc_ncmds);
bus_dmamem_free(sc->sc_dmat, &achp->ahcic_cmd_tbl_seg,
achp->ahcic_cmd_tbl_nseg);
ata_channel_detach(chp);
port++;
}
bus_dmamap_unload(sc->sc_dmat, sc->sc_cmd_hdrd);
bus_dmamap_destroy(sc->sc_dmat, sc->sc_cmd_hdrd);
bus_dmamem_unmap(sc->sc_dmat, sc->sc_cmd_hdr,
(AHCI_RFIS_SIZE + AHCI_CMDH_SIZE) * sc->sc_atac.atac_nchannels);
bus_dmamem_free(sc->sc_dmat, &sc->sc_cmd_hdr_seg, sc->sc_cmd_hdr_nseg);
if (adapt->adapt_refcnt != 0)
return EBUSY;
return 0;
}
void
ahci_resume(struct ahci_softc *sc)
{
ahci_reset(sc);
ahci_setup_ports(sc);
ahci_reprobe_drives(sc);
ahci_enable_intrs(sc);
}
int
ahci_intr(void *v)
{
struct ahci_softc *sc = v;
uint32_t is, ports;
int bit, r = 0;
while ((is = AHCI_READ(sc, AHCI_IS))) {
AHCIDEBUG_PRINT(("%s ahci_intr 0x%x\n", AHCINAME(sc), is),
DEBUG_INTR);
r = 1;
ports = is;
while ((bit = ffs(ports)) != 0) {
bit--;
ahci_intr_port_common(&sc->sc_channels[bit].ata_channel);
ports &= ~(1U << bit);
}
AHCI_WRITE(sc, AHCI_IS, is);
}
return r;
}
int
ahci_intr_port(void *v)
{
struct ahci_channel *achp = v;
struct ata_channel *chp = &achp->ata_channel;
struct ahci_softc *sc = (struct ahci_softc *)chp->ch_atac;
int ret;
ret = ahci_intr_port_common(chp);
if (ret) {
AHCI_WRITE(sc, AHCI_IS, 1U << chp->ch_channel);
}
return ret;
}
static int
ahci_intr_port_common(struct ata_channel *chp)
{
struct ahci_softc *sc = (struct ahci_softc *)chp->ch_atac;
uint32_t is, tfd, sact;
struct ata_xfer *xfer;
int slot = -1;
bool recover = false;
uint32_t aslots;
is = AHCI_READ(sc, AHCI_P_IS(chp->ch_channel));
AHCI_WRITE(sc, AHCI_P_IS(chp->ch_channel), is);
AHCIDEBUG_PRINT(("ahci_intr_port_common %s port %d "
"is 0x%x CI 0x%x SACT 0x%x TFD 0x%x\n",
AHCINAME(sc),
chp->ch_channel, is,
AHCI_READ(sc, AHCI_P_CI(chp->ch_channel)),
AHCI_READ(sc, AHCI_P_SACT(chp->ch_channel)),
AHCI_READ(sc, AHCI_P_TFD(chp->ch_channel))),
DEBUG_INTR);
if ((chp->ch_flags & ATACH_NCQ) == 0) {
/* Non-NCQ operation */
sact = AHCI_READ(sc, AHCI_P_CI(chp->ch_channel));
} else {
/* NCQ operation */
sact = AHCI_READ(sc, AHCI_P_SACT(chp->ch_channel));
}
/* Handle errors */
if (is & (AHCI_P_IX_TFES | AHCI_P_IX_HBFS | AHCI_P_IX_HBDS |
AHCI_P_IX_IFS | AHCI_P_IX_OFS | AHCI_P_IX_UFS)) {
/* Fatal errors */
if (is & AHCI_P_IX_TFES) {
tfd = AHCI_READ(sc, AHCI_P_TFD(chp->ch_channel));
if ((chp->ch_flags & ATACH_NCQ) == 0) {
/* Slot valid only for Non-NCQ operation */
slot = (AHCI_READ(sc,
AHCI_P_CMD(chp->ch_channel))
& AHCI_P_CMD_CCS_MASK)
>> AHCI_P_CMD_CCS_SHIFT;
}
AHCIDEBUG_PRINT((
"%s port %d: TFE: sact 0x%x is 0x%x tfd 0x%x\n",
AHCINAME(sc), chp->ch_channel, sact, is, tfd),
DEBUG_INTR);
} else {
/* mark an error, and set BSY */
tfd = (WDCE_ABRT << AHCI_P_TFD_ERR_SHIFT) |
WDCS_ERR | WDCS_BSY;
}
if (is & AHCI_P_IX_IFS) {
AHCIDEBUG_PRINT(("%s port %d: SERR 0x%x\n",
AHCINAME(sc), chp->ch_channel,
AHCI_READ(sc, AHCI_P_SERR(chp->ch_channel))),
DEBUG_INTR);
}
if (!ISSET(chp->ch_flags, ATACH_RECOVERING))
recover = true;
} else if (is & (AHCI_P_IX_DHRS|AHCI_P_IX_SDBS)) {
tfd = AHCI_READ(sc, AHCI_P_TFD(chp->ch_channel));
/* D2H Register FIS or Set Device Bits */
if ((tfd & WDCS_ERR) != 0) {
if (!ISSET(chp->ch_flags, ATACH_RECOVERING))
recover = true;
AHCIDEBUG_PRINT(("%s port %d: transfer aborted 0x%x\n",
AHCINAME(sc), chp->ch_channel, tfd), DEBUG_INTR);
}
} else {
tfd = 0;
}
if (__predict_false(recover))
ata_channel_freeze(chp);
aslots = ata_queue_active(chp);
if (slot >= 0) {
if ((aslots & __BIT(slot)) != 0 &&
(sact & __BIT(slot)) == 0) {
xfer = ata_queue_hwslot_to_xfer(chp, slot);
xfer->ops->c_intr(chp, xfer, tfd);
}
} else {
/*
* For NCQ, HBA halts processing when error is notified,
* and any further D2H FISes are ignored until the error
* condition is cleared. Hence if a command is inactive,
* it means it actually already finished successfully.
* Note: active slots can change as c_intr() callback
* can activate another command(s), so must only process
* commands active before we start processing.
*/
for (slot=0; slot < sc->sc_ncmds; slot++) {
if ((aslots & __BIT(slot)) != 0 &&
(sact & __BIT(slot)) == 0) {
xfer = ata_queue_hwslot_to_xfer(chp, slot);
xfer->ops->c_intr(chp, xfer, tfd);
}
}
}
if (__predict_false(recover)) {
ata_channel_lock(chp);
ata_channel_thaw_locked(chp);
ata_thread_run(chp, 0, ATACH_TH_RECOVERY, tfd);
ata_channel_unlock(chp);
}
return 1;
}
static void
ahci_reset_drive(struct ata_drive_datas *drvp, int flags, uint32_t *sigp)
{
struct ata_channel *chp = drvp->chnl_softc;
struct ahci_softc *sc = (struct ahci_softc *)chp->ch_atac;
uint8_t c_slot;
ata_channel_lock_owned(chp);
/* get a slot for running the command on */
if (!ata_queue_alloc_slot(chp, &c_slot, ATA_MAX_OPENINGS)) {
panic("%s: %s: failed to get xfer for reset, port %d\n",
device_xname(sc->sc_atac.atac_dev),
__func__, chp->ch_channel);
/* NOTREACHED */
}
AHCI_WRITE(sc, AHCI_GHC,
AHCI_READ(sc, AHCI_GHC) & ~AHCI_GHC_IE);
ahci_channel_stop(sc, chp, flags);
ahci_do_reset_drive(chp, drvp->drive, flags, sigp, c_slot);
AHCI_WRITE(sc, AHCI_GHC, AHCI_READ(sc, AHCI_GHC) | AHCI_GHC_IE);
ata_queue_free_slot(chp, c_slot);
}
/* return error code from ata_bio */
static int
ahci_exec_fis(struct ata_channel *chp, int timeout, int flags, int slot)
{
struct ahci_channel *achp = (struct ahci_channel *)chp;
struct ahci_softc *sc = (struct ahci_softc *)chp->ch_atac;
int i;
uint32_t is;
/*
* Base timeout is specified in ms. Delay for 10ms
* on each round.
*/
timeout = timeout / 10;
AHCI_CMDH_SYNC(sc, achp, slot,
BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
/* start command */
AHCI_WRITE(sc, AHCI_P_CI(chp->ch_channel), 1U << slot);
for (i = 0; i < timeout; i++) {
if ((AHCI_READ(sc, AHCI_P_CI(chp->ch_channel)) & (1U << slot)) ==
0)
return 0;
is = AHCI_READ(sc, AHCI_P_IS(chp->ch_channel));
if (is & (AHCI_P_IX_TFES | AHCI_P_IX_HBFS | AHCI_P_IX_HBDS |
AHCI_P_IX_IFS |
AHCI_P_IX_OFS | AHCI_P_IX_UFS)) {
if ((is & (AHCI_P_IX_DHRS|AHCI_P_IX_TFES)) ==
(AHCI_P_IX_DHRS|AHCI_P_IX_TFES)) {
/*
* we got the D2H FIS anyway,
* assume sig is valid.
* channel is restarted later
*/
return ERROR;
}
aprint_debug("%s port %d: error 0x%x sending FIS\n",
AHCINAME(sc), chp->ch_channel, is);
return ERR_DF;
}
ata_delay(chp, 10, "ahcifis", flags);
}
aprint_debug("%s port %d: timeout sending FIS\n",
AHCINAME(sc), chp->ch_channel);
return TIMEOUT;
}
static int
ahci_do_reset_drive(struct ata_channel *chp, int drive, int flags,
uint32_t *sigp, uint8_t c_slot)
{
struct ahci_channel *achp = (struct ahci_channel *)chp;
struct ahci_softc *sc = (struct ahci_softc *)chp->ch_atac;
struct ahci_cmd_tbl *cmd_tbl;
struct ahci_cmd_header *cmd_h;
int i, error = 0;
uint32_t sig, cmd;
int noclo_retry = 0, retry;
ata_channel_lock_owned(chp);
again:
/* clear port interrupt register */
AHCI_WRITE(sc, AHCI_P_IS(chp->ch_channel), 0xffffffff);
/* clear SErrors and start operations */
if ((sc->sc_ahci_cap & AHCI_CAP_CLO) == AHCI_CAP_CLO) {
/*
* issue a command list override to clear BSY.
* This is needed if there's a PMP with no drive
* on port 0
*/
ahci_channel_start(sc, chp, flags, 1);
} else {
/* Can't handle command still running without CLO */
cmd = AHCI_READ(sc, AHCI_P_CMD(chp->ch_channel));
if ((cmd & AHCI_P_CMD_CR) != 0) {
ahci_channel_stop(sc, chp, flags);
cmd = AHCI_READ(sc, AHCI_P_CMD(chp->ch_channel));
if ((cmd & AHCI_P_CMD_CR) != 0) {
aprint_error("%s port %d: DMA engine busy "
"for drive %d\n", AHCINAME(sc),
chp->ch_channel, drive);
error = EBUSY;
goto end;
}
}
KASSERT((AHCI_READ(sc, AHCI_P_CMD(chp->ch_channel)) & AHCI_P_CMD_CR) == 0);
ahci_channel_start(sc, chp, flags, 0);
}
if (drive > 0) {
KASSERT(sc->sc_ahci_cap & AHCI_CAP_SPM);
}
/* polled command, assume interrupts are disabled */
cmd_h = &achp->ahcic_cmdh[c_slot];
cmd_tbl = achp->ahcic_cmd_tbl[c_slot];
cmd_h->cmdh_flags = htole16(AHCI_CMDH_F_RST | AHCI_CMDH_F_CBSY |
RHD_FISLEN / 4 | (drive << AHCI_CMDH_F_PMP_SHIFT));
cmd_h->cmdh_prdtl = 0;
cmd_h->cmdh_prdbc = 0;
memset(cmd_tbl->cmdt_cfis, 0, 64);
cmd_tbl->cmdt_cfis[fis_type] = RHD_FISTYPE;
cmd_tbl->cmdt_cfis[rhd_c] = drive;
cmd_tbl->cmdt_cfis[rhd_control] = WDCTL_RST | WDCTL_4BIT;
switch (ahci_exec_fis(chp, 100, flags, c_slot)) {
case ERR_DF:
case TIMEOUT:
/*
* without CLO we can't make sure a software reset will
* success, as the drive may still have BSY or DRQ set.
* in this case, reset the whole channel and retry the
* drive reset. The channel reset should clear BSY and DRQ
*/
if ((sc->sc_ahci_cap & AHCI_CAP_CLO) == 0 && noclo_retry == 0) {
noclo_retry++;
ahci_reset_channel(chp, flags);
goto again;
}
aprint_error("%s port %d: setting WDCTL_RST failed "
"for drive %d\n", AHCINAME(sc), chp->ch_channel, drive);
error = EBUSY;
goto end;
default:
break;
}
/*
* SATA specification has toggle period for SRST bit of 5 usec. Some
* controllers fail to process the SRST clear operation unless
* we wait for at least this period between the set and clear commands.
*/
ata_delay(chp, 10, "ahcirstw", flags);
/*
* Try to clear WDCTL_RST a few times before giving up.
*/
for (error = EBUSY, retry = 0; error != 0 && retry < 5; retry++) {
cmd_h->cmdh_flags = htole16(RHD_FISLEN / 4 |
(drive << AHCI_CMDH_F_PMP_SHIFT));
cmd_h->cmdh_prdbc = 0;
memset(cmd_tbl->cmdt_cfis, 0, 64);
cmd_tbl->cmdt_cfis[fis_type] = RHD_FISTYPE;
cmd_tbl->cmdt_cfis[rhd_c] = drive;
cmd_tbl->cmdt_cfis[rhd_control] = WDCTL_4BIT;
switch (ahci_exec_fis(chp, 310, flags, c_slot)) {
case ERR_DF:
case TIMEOUT:
error = EBUSY;
break;
default:
error = 0;
break;
}
if (error == 0) {
break;
}
}
if (error == EBUSY) {
aprint_error("%s port %d: clearing WDCTL_RST failed "
"for drive %d\n", AHCINAME(sc), chp->ch_channel, drive);
goto end;
}
/*
* wait 31s for BSY to clear
* This should not be needed, but some controllers clear the
* command slot before receiving the D2H FIS ...
*/
for (i = 0; i < AHCI_RST_WAIT; i++) {
sig = AHCI_READ(sc, AHCI_P_TFD(chp->ch_channel));
if ((__SHIFTOUT(sig, AHCI_P_TFD_ST) & WDCS_BSY) == 0)
break;
ata_delay(chp, 10, "ahcid2h", flags);
}
if (i == AHCI_RST_WAIT) {
aprint_error("%s: BSY never cleared, TD 0x%x\n",
AHCINAME(sc), sig);
goto end;
}
AHCIDEBUG_PRINT(("%s: BSY took %d ms\n", AHCINAME(sc), i * 10),
DEBUG_PROBE);
sig = AHCI_READ(sc, AHCI_P_SIG(chp->ch_channel));
if (sigp)
*sigp = sig;
AHCIDEBUG_PRINT(("%s: port %d: sig=0x%x CMD=0x%x\n",
AHCINAME(sc), chp->ch_channel, sig,
AHCI_READ(sc, AHCI_P_CMD(chp->ch_channel))), DEBUG_PROBE);
end:
ahci_channel_stop(sc, chp, flags);
ata_delay(chp, 500, "ahcirst", flags);
/* clear port interrupt register */
AHCI_WRITE(sc, AHCI_P_IS(chp->ch_channel), 0xffffffff);
ahci_channel_start(sc, chp, flags,
(sc->sc_ahci_cap & AHCI_CAP_CLO) ? 1 : 0);
return error;
}
static void
ahci_reset_channel(struct ata_channel *chp, int flags)
{
struct ahci_softc *sc = (struct ahci_softc *)chp->ch_atac;
struct ahci_channel *achp = (struct ahci_channel *)chp;
int i, tfd;
ata_channel_lock_owned(chp);
ahci_channel_stop(sc, chp, flags);
if (sata_reset_interface(chp, sc->sc_ahcit, achp->ahcic_scontrol,
achp->ahcic_sstatus, flags) != SStatus_DET_DEV) {
printf("%s: port %d reset failed\n", AHCINAME(sc), chp->ch_channel);
/* XXX and then ? */
}
ata_kill_active(chp, KILL_RESET, flags);
ata_delay(chp, 500, "ahcirst", flags);
/* clear port interrupt register */
AHCI_WRITE(sc, AHCI_P_IS(chp->ch_channel), 0xffffffff);
/* clear SErrors and start operations */
ahci_channel_start(sc, chp, flags,
(sc->sc_ahci_cap & AHCI_CAP_CLO) ? 1 : 0);
/* wait 31s for BSY to clear */
for (i = 0; i < AHCI_RST_WAIT; i++) {
tfd = AHCI_READ(sc, AHCI_P_TFD(chp->ch_channel));
if ((AHCI_TFD_ST(tfd) & WDCS_BSY) == 0)
break;
ata_delay(chp, 10, "ahcid2h", flags);
}
if ((AHCI_TFD_ST(tfd) & WDCS_BSY) != 0)
aprint_error("%s: BSY never cleared, TD 0x%x\n",
AHCINAME(sc), tfd);
AHCIDEBUG_PRINT(("%s: BSY took %d ms\n", AHCINAME(sc), i * 10),
DEBUG_PROBE);
/* clear port interrupt register */
AHCI_WRITE(sc, AHCI_P_IS(chp->ch_channel), 0xffffffff);
return;
}
static int
ahci_ata_addref(struct ata_drive_datas *drvp)
{
return 0;
}
static void
ahci_ata_delref(struct ata_drive_datas *drvp)
{
return;
}
static void
ahci_killpending(struct ata_drive_datas *drvp)
{
return;
}
static void
ahci_probe_drive(struct ata_channel *chp)
{
struct ahci_softc *sc = (struct ahci_softc *)chp->ch_atac;
struct ahci_channel *achp = (struct ahci_channel *)chp;
uint32_t sig;
uint8_t c_slot;
int error;
ata_channel_lock(chp);
/* get a slot for running the command on */
if (!ata_queue_alloc_slot(chp, &c_slot, ATA_MAX_OPENINGS)) {
aprint_error_dev(sc->sc_atac.atac_dev,
"%s: failed to get xfer port %d\n",
__func__, chp->ch_channel);
ata_channel_unlock(chp);
return;
}
/* bring interface up, accept FISs, power up and spin up device */
AHCI_WRITE(sc, AHCI_P_CMD(chp->ch_channel),
AHCI_P_CMD_ICC_AC | AHCI_P_CMD_FRE |
AHCI_P_CMD_POD | AHCI_P_CMD_SUD);
/* reset the PHY and bring online */
switch (sata_reset_interface(chp, sc->sc_ahcit, achp->ahcic_scontrol,
achp->ahcic_sstatus, AT_WAIT)) {
case SStatus_DET_DEV:
ata_delay(chp, 500, "ahcidv", AT_WAIT);
/* Initial value, used in case the soft reset fails */
sig = AHCI_READ(sc, AHCI_P_SIG(chp->ch_channel));
if (sc->sc_ahci_cap & AHCI_CAP_SPM) {
error = ahci_do_reset_drive(chp, PMP_PORT_CTL, AT_WAIT,
&sig, c_slot);
/* If probe for PMP failed, just fallback to drive 0 */
if (error) {
aprint_error("%s port %d: drive %d reset "
"failed, disabling PMP\n",
AHCINAME(sc), chp->ch_channel,
PMP_PORT_CTL);
sc->sc_ahci_cap &= ~AHCI_CAP_SPM;
ahci_reset_channel(chp, AT_WAIT);
}
} else {
ahci_do_reset_drive(chp, 0, AT_WAIT, &sig, c_slot);
}
sata_interpret_sig(chp, 0, sig);
/* if we have a PMP attached, inform the controller */
if (chp->ch_ndrives > PMP_PORT_CTL &&
chp->ch_drive[PMP_PORT_CTL].drive_type == ATA_DRIVET_PM) {
AHCI_WRITE(sc, AHCI_P_CMD(chp->ch_channel),
AHCI_READ(sc, AHCI_P_CMD(chp->ch_channel)) |
AHCI_P_CMD_PMA);
}
/* clear port interrupt register */
AHCI_WRITE(sc, AHCI_P_IS(chp->ch_channel), 0xffffffff);
/* and enable interrupts */
AHCI_WRITE(sc, AHCI_P_IE(chp->ch_channel),
AHCI_P_IX_TFES | AHCI_P_IX_HBFS | AHCI_P_IX_HBDS |
AHCI_P_IX_IFS |
AHCI_P_IX_OFS | AHCI_P_IX_DPS | AHCI_P_IX_UFS |
AHCI_P_IX_PSS | AHCI_P_IX_DHRS | AHCI_P_IX_SDBS);
/* wait 500ms before actually starting operations */
ata_delay(chp, 500, "ahciprb", AT_WAIT);
break;
default:
break;
}
ata_queue_free_slot(chp, c_slot);
ata_channel_unlock(chp);
}
static void
ahci_setup_channel(struct ata_channel *chp)
{
return;
}
static const struct ata_xfer_ops ahci_cmd_xfer_ops = {
.c_start = ahci_cmd_start,
.c_poll = ahci_cmd_poll,
.c_abort = ahci_cmd_abort,
.c_intr = ahci_cmd_complete,
.c_kill_xfer = ahci_cmd_kill_xfer,
};
static void
ahci_exec_command(struct ata_drive_datas *drvp, struct ata_xfer *xfer)
{
struct ata_channel *chp = drvp->chnl_softc;
struct ata_command *ata_c = &xfer->c_ata_c;
AHCIDEBUG_PRINT(("ahci_exec_command port %d CI 0x%x\n",
chp->ch_channel,
AHCI_READ(AHCI_CH2SC(chp), AHCI_P_CI(chp->ch_channel))),
DEBUG_XFERS);
if (ata_c->flags & AT_POLL)
xfer->c_flags |= C_POLL;
if (ata_c->flags & AT_WAIT)
xfer->c_flags |= C_WAIT;
xfer->c_drive = drvp->drive;
xfer->c_databuf = ata_c->data;
xfer->c_bcount = ata_c->bcount;
xfer->ops = &ahci_cmd_xfer_ops;
ata_exec_xfer(chp, xfer);
}
static int
ahci_cmd_start(struct ata_channel *chp, struct ata_xfer *xfer)
{
struct ahci_softc *sc = AHCI_CH2SC(chp);
struct ahci_channel *achp = (struct ahci_channel *)chp;
struct ata_command *ata_c = &xfer->c_ata_c;
int slot = xfer->c_slot;
struct ahci_cmd_tbl *cmd_tbl;
struct ahci_cmd_header *cmd_h;
AHCIDEBUG_PRINT(("ahci_cmd_start CI 0x%x timo %d\n slot %d",
AHCI_READ(sc, AHCI_P_CI(chp->ch_channel)),
ata_c->timeout, slot),
DEBUG_XFERS);
ata_channel_lock_owned(chp);
cmd_tbl = achp->ahcic_cmd_tbl[slot];
AHCIDEBUG_PRINT(("%s port %d tbl %p\n", AHCINAME(sc), chp->ch_channel,
cmd_tbl), DEBUG_XFERS);
satafis_rhd_construct_cmd(ata_c, cmd_tbl->cmdt_cfis);
cmd_tbl->cmdt_cfis[rhd_c] |= xfer->c_drive;
cmd_h = &achp->ahcic_cmdh[slot];
AHCIDEBUG_PRINT(("%s port %d header %p\n", AHCINAME(sc),
chp->ch_channel, cmd_h), DEBUG_XFERS);
if (ahci_dma_setup(chp, slot,
(ata_c->flags & (AT_READ|AT_WRITE) && ata_c->bcount > 0) ?
ata_c->data : NULL,
ata_c->bcount,
(ata_c->flags & AT_READ) ? BUS_DMA_READ : BUS_DMA_WRITE)) {
ata_c->flags |= AT_DF;
return ATASTART_ABORT;
}
cmd_h->cmdh_flags = htole16(
((ata_c->flags & AT_WRITE) ? AHCI_CMDH_F_WR : 0) |
RHD_FISLEN / 4 | (xfer->c_drive << AHCI_CMDH_F_PMP_SHIFT));
cmd_h->cmdh_prdbc = 0;
AHCI_CMDH_SYNC(sc, achp, slot,
BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
if (ata_c->flags & AT_POLL) {
/* polled command, disable interrupts */
AHCI_WRITE(sc, AHCI_GHC,
AHCI_READ(sc, AHCI_GHC) & ~AHCI_GHC_IE);
}
/* start command */
AHCI_WRITE(sc, AHCI_P_CI(chp->ch_channel), 1U << slot);
if ((ata_c->flags & AT_POLL) == 0) {
callout_reset(&chp->c_timo_callout, mstohz(ata_c->timeout),
ata_timeout, chp);
return ATASTART_STARTED;
} else
return ATASTART_POLL;
}
static int
ahci_cmd_poll(struct ata_channel *chp, struct ata_xfer *xfer)
{
struct ahci_softc *sc = AHCI_CH2SC(chp);
struct ahci_channel *achp = (struct ahci_channel *)chp;
ata_channel_lock(chp);
/*
* Polled command.
*/
for (int i = 0; i < xfer->c_ata_c.timeout / 10; i++) {
if (xfer->c_ata_c.flags & AT_DONE)
break;
ata_channel_unlock(chp);
ahci_intr_port(achp);
ata_channel_lock(chp);
ata_delay(chp, 10, "ahcipl", xfer->c_ata_c.flags);
}
AHCIDEBUG_PRINT(("%s port %d poll end GHC 0x%x IS 0x%x list 0x%x%x fis 0x%x%x CMD 0x%x CI 0x%x\n", AHCINAME(sc), chp->ch_channel,
AHCI_READ(sc, AHCI_GHC), AHCI_READ(sc, AHCI_IS),
AHCI_READ(sc, AHCI_P_CLBU(chp->ch_channel)),
AHCI_READ(sc, AHCI_P_CLB(chp->ch_channel)),
AHCI_READ(sc, AHCI_P_FBU(chp->ch_channel)),
AHCI_READ(sc, AHCI_P_FB(chp->ch_channel)),
AHCI_READ(sc, AHCI_P_CMD(chp->ch_channel)),
AHCI_READ(sc, AHCI_P_CI(chp->ch_channel))),
DEBUG_XFERS);
ata_channel_unlock(chp);
if ((xfer->c_ata_c.flags & AT_DONE) == 0) {
xfer->c_ata_c.flags |= AT_TIMEOU;
xfer->ops->c_intr(chp, xfer, 0);
}
/* reenable interrupts */
AHCI_WRITE(sc, AHCI_GHC, AHCI_READ(sc, AHCI_GHC) | AHCI_GHC_IE);
return ATAPOLL_DONE;
}
static void
ahci_cmd_abort(struct ata_channel *chp, struct ata_xfer *xfer)
{
ahci_cmd_complete(chp, xfer, 0);
}
static void
ahci_cmd_kill_xfer(struct ata_channel *chp, struct ata_xfer *xfer, int reason)
{
struct ata_command *ata_c = &xfer->c_ata_c;
bool deactivate = true;
AHCIDEBUG_PRINT(("ahci_cmd_kill_xfer port %d\n", chp->ch_channel),
DEBUG_FUNCS);
switch (reason) {
case KILL_GONE_INACTIVE:
deactivate = false;
/* FALLTHROUGH */
case KILL_GONE:
ata_c->flags |= AT_GONE;
break;
case KILL_RESET:
ata_c->flags |= AT_RESET;
break;
case KILL_REQUEUE:
panic("%s: not supposed to be requeued\n", __func__);
break;
default:
printf("ahci_cmd_kill_xfer: unknown reason %d\n", reason);
panic("ahci_cmd_kill_xfer");
}
ahci_cmd_done_end(chp, xfer);
if (deactivate)
ata_deactivate_xfer(chp, xfer);
}
static int
ahci_cmd_complete(struct ata_channel *chp, struct ata_xfer *xfer, int tfd)
{
struct ata_command *ata_c = &xfer->c_ata_c;
struct ahci_channel *achp = (struct ahci_channel *)chp;
AHCIDEBUG_PRINT(("ahci_cmd_complete port %d CMD 0x%x CI 0x%x\n",
chp->ch_channel,
AHCI_READ(AHCI_CH2SC(chp), AHCI_P_CMD(chp->ch_channel)),
AHCI_READ(AHCI_CH2SC(chp), AHCI_P_CI(chp->ch_channel))),
DEBUG_FUNCS);
if (ata_waitdrain_xfer_check(chp, xfer))
return 0;
if (xfer->c_flags & C_TIMEOU) {
ata_c->flags |= AT_TIMEOU;
}
if (AHCI_TFD_ST(tfd) & WDCS_BSY) {
ata_c->flags |= AT_TIMEOU;
} else if (AHCI_TFD_ST(tfd) & WDCS_ERR) {
ata_c->r_error = AHCI_TFD_ERR(tfd);
ata_c->flags |= AT_ERROR;
}
if (ata_c->flags & AT_READREG)
satafis_rdh_cmd_readreg(ata_c, achp->ahcic_rfis->rfis_rfis);
ahci_cmd_done(chp, xfer);
ata_deactivate_xfer(chp, xfer);
if ((ata_c->flags & (AT_TIMEOU|AT_ERROR)) == 0)
atastart(chp);
return 0;
}
static void
ahci_cmd_done(struct ata_channel *chp, struct ata_xfer *xfer)
{
struct ahci_softc *sc = (struct ahci_softc *)chp->ch_atac;
struct ahci_channel *achp = (struct ahci_channel *)chp;
struct ata_command *ata_c = &xfer->c_ata_c;
uint16_t *idwordbuf;
int i;
AHCIDEBUG_PRINT(("ahci_cmd_done port %d flags %#x/%#x\n",
chp->ch_channel, xfer->c_flags, ata_c->flags), DEBUG_FUNCS);
if (ata_c->flags & (AT_READ|AT_WRITE) && ata_c->bcount > 0) {
bus_dmamap_t map = achp->ahcic_datad[xfer->c_slot];
bus_dmamap_sync(sc->sc_dmat, map, 0, map->dm_mapsize,
(ata_c->flags & AT_READ) ? BUS_DMASYNC_POSTREAD :
BUS_DMASYNC_POSTWRITE);
bus_dmamap_unload(sc->sc_dmat, map);
}
AHCI_CMDH_SYNC(sc, achp, xfer->c_slot,
BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
/* ata(4) expects IDENTIFY data to be in host endianess */
if (ata_c->r_command == WDCC_IDENTIFY ||
ata_c->r_command == ATAPI_IDENTIFY_DEVICE) {
idwordbuf = xfer->c_databuf;
for (i = 0; i < (xfer->c_bcount / sizeof(*idwordbuf)); i++) {
idwordbuf[i] = le16toh(idwordbuf[i]);
}
}
if (achp->ahcic_cmdh[xfer->c_slot].cmdh_prdbc)
ata_c->flags |= AT_XFDONE;
ahci_cmd_done_end(chp, xfer);
}
static void
ahci_cmd_done_end(struct ata_channel *chp, struct ata_xfer *xfer)
{
struct ata_command *ata_c = &xfer->c_ata_c;
ata_c->flags |= AT_DONE;
}
static const struct ata_xfer_ops ahci_bio_xfer_ops = {
.c_start = ahci_bio_start,
.c_poll = ahci_bio_poll,
.c_abort = ahci_bio_abort,
.c_intr = ahci_bio_complete,
.c_kill_xfer = ahci_bio_kill_xfer,
};
static void
ahci_ata_bio(struct ata_drive_datas *drvp, struct ata_xfer *xfer)
{
struct ata_channel *chp = drvp->chnl_softc;
struct ata_bio *ata_bio = &xfer->c_bio;
AHCIDEBUG_PRINT(("ahci_ata_bio port %d CI 0x%x\n",
chp->ch_channel,
AHCI_READ(AHCI_CH2SC(chp), AHCI_P_CI(chp->ch_channel))),
DEBUG_XFERS);
if (ata_bio->flags & ATA_POLL)
xfer->c_flags |= C_POLL;
xfer->c_drive = drvp->drive;
xfer->c_databuf = ata_bio->databuf;
xfer->c_bcount = ata_bio->bcount;
xfer->ops = &ahci_bio_xfer_ops;
ata_exec_xfer(chp, xfer);
}
static int
ahci_bio_start(struct ata_channel *chp, struct ata_xfer *xfer)
{
struct ahci_softc *sc = (struct ahci_softc *)chp->ch_atac;
struct ahci_channel *achp = (struct ahci_channel *)chp;
struct ata_bio *ata_bio = &xfer->c_bio;
struct ahci_cmd_tbl *cmd_tbl;
struct ahci_cmd_header *cmd_h;
AHCIDEBUG_PRINT(("ahci_bio_start CI 0x%x\n",
AHCI_READ(sc, AHCI_P_CI(chp->ch_channel))), DEBUG_XFERS);
ata_channel_lock_owned(chp);
cmd_tbl = achp->ahcic_cmd_tbl[xfer->c_slot];
AHCIDEBUG_PRINT(("%s port %d tbl %p\n", AHCINAME(sc), chp->ch_channel,
cmd_tbl), DEBUG_XFERS);
satafis_rhd_construct_bio(xfer, cmd_tbl->cmdt_cfis);
cmd_tbl->cmdt_cfis[rhd_c] |= xfer->c_drive;
cmd_h = &achp->ahcic_cmdh[xfer->c_slot];
AHCIDEBUG_PRINT(("%s port %d header %p\n", AHCINAME(sc),
chp->ch_channel, cmd_h), DEBUG_XFERS);
if (ahci_dma_setup(chp, xfer->c_slot, ata_bio->databuf, ata_bio->bcount,
(ata_bio->flags & ATA_READ) ? BUS_DMA_READ : BUS_DMA_WRITE)) {
ata_bio->error = ERR_DMA;
ata_bio->r_error = 0;
return ATASTART_ABORT;
}
cmd_h->cmdh_flags = htole16(
((ata_bio->flags & ATA_READ) ? 0 : AHCI_CMDH_F_WR) |
RHD_FISLEN / 4 | (xfer->c_drive << AHCI_CMDH_F_PMP_SHIFT));
cmd_h->cmdh_prdbc = 0;
AHCI_CMDH_SYNC(sc, achp, xfer->c_slot,
BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
if (xfer->c_flags & C_POLL) {
/* polled command, disable interrupts */
AHCI_WRITE(sc, AHCI_GHC,
AHCI_READ(sc, AHCI_GHC) & ~AHCI_GHC_IE);
}
if (xfer->c_flags & C_NCQ)
AHCI_WRITE(sc, AHCI_P_SACT(chp->ch_channel), 1U << xfer->c_slot);
/* start command */
AHCI_WRITE(sc, AHCI_P_CI(chp->ch_channel), 1U << xfer->c_slot);
if ((xfer->c_flags & C_POLL) == 0) {
callout_reset(&chp->c_timo_callout, mstohz(ATA_DELAY),
ata_timeout, chp);
return ATASTART_STARTED;
} else
return ATASTART_POLL;
}
static int
ahci_bio_poll(struct ata_channel *chp, struct ata_xfer *xfer)
{
struct ahci_softc *sc = (struct ahci_softc *)chp->ch_atac;
struct ahci_channel *achp = (struct ahci_channel *)chp;
/*
* Polled command.
*/
for (int i = 0; i < ATA_DELAY * 10; i++) {
if (xfer->c_bio.flags & ATA_ITSDONE)
break;
ahci_intr_port(achp);
delay(100);
}
AHCIDEBUG_PRINT(("%s port %d poll end GHC 0x%x IS 0x%x list 0x%x%x fis 0x%x%x CMD 0x%x CI 0x%x\n", AHCINAME(sc), chp->ch_channel,
AHCI_READ(sc, AHCI_GHC), AHCI_READ(sc, AHCI_IS),
AHCI_READ(sc, AHCI_P_CLBU(chp->ch_channel)),
AHCI_READ(sc, AHCI_P_CLB(chp->ch_channel)),
AHCI_READ(sc, AHCI_P_FBU(chp->ch_channel)),
AHCI_READ(sc, AHCI_P_FB(chp->ch_channel)),
AHCI_READ(sc, AHCI_P_CMD(chp->ch_channel)),
AHCI_READ(sc, AHCI_P_CI(chp->ch_channel))),
DEBUG_XFERS);
if ((xfer->c_bio.flags & ATA_ITSDONE) == 0) {
xfer->c_bio.error = TIMEOUT;
xfer->ops->c_intr(chp, xfer, 0);
}
/* reenable interrupts */
AHCI_WRITE(sc, AHCI_GHC, AHCI_READ(sc, AHCI_GHC) | AHCI_GHC_IE);
return ATAPOLL_DONE;
}
static void
ahci_bio_abort(struct ata_channel *chp, struct ata_xfer *xfer)
{
ahci_bio_complete(chp, xfer, 0);
}
static void
ahci_bio_kill_xfer(struct ata_channel *chp, struct ata_xfer *xfer, int reason)
{
int drive = xfer->c_drive;
struct ata_bio *ata_bio = &xfer->c_bio;
bool deactivate = true;
AHCIDEBUG_PRINT(("ahci_bio_kill_xfer port %d\n", chp->ch_channel),
DEBUG_FUNCS);
ata_bio->flags |= ATA_ITSDONE;
switch (reason) {
case KILL_GONE_INACTIVE:
deactivate = false;
/* FALLTHROUGH */
case KILL_GONE:
ata_bio->error = ERR_NODEV;
break;
case KILL_RESET:
ata_bio->error = ERR_RESET;
break;
case KILL_REQUEUE:
ata_bio->error = REQUEUE;
break;
default:
printf("ahci_bio_kill_xfer: unknown reason %d\n", reason);
panic("ahci_bio_kill_xfer");
}
ata_bio->r_error = WDCE_ABRT;
if (deactivate)
ata_deactivate_xfer(chp, xfer);
(*chp->ch_drive[drive].drv_done)(chp->ch_drive[drive].drv_softc, xfer);
}
static int
ahci_bio_complete(struct ata_channel *chp, struct ata_xfer *xfer, int tfd)
{
struct ata_bio *ata_bio = &xfer->c_bio;
int drive = xfer->c_drive;
struct ahci_channel *achp = (struct ahci_channel *)chp;
struct ahci_softc *sc = (struct ahci_softc *)chp->ch_atac;
AHCIDEBUG_PRINT(("ahci_bio_complete port %d\n", chp->ch_channel),
DEBUG_FUNCS);
if (ata_waitdrain_xfer_check(chp, xfer))
return 0;
if (xfer->c_flags & C_TIMEOU) {
ata_bio->error = TIMEOUT;
}
bus_dmamap_sync(sc->sc_dmat, achp->ahcic_datad[xfer->c_slot], 0,
achp->ahcic_datad[xfer->c_slot]->dm_mapsize,
(ata_bio->flags & ATA_READ) ? BUS_DMASYNC_POSTREAD :
BUS_DMASYNC_POSTWRITE);
bus_dmamap_unload(sc->sc_dmat, achp->ahcic_datad[xfer->c_slot]);
ata_bio->flags |= ATA_ITSDONE;
if (AHCI_TFD_ERR(tfd) & WDCS_DWF) {
ata_bio->error = ERR_DF;
} else if (AHCI_TFD_ST(tfd) & WDCS_ERR) {
ata_bio->error = ERROR;
ata_bio->r_error = AHCI_TFD_ERR(tfd);
} else if (AHCI_TFD_ST(tfd) & WDCS_CORR)
ata_bio->flags |= ATA_CORR;
AHCI_CMDH_SYNC(sc, achp, xfer->c_slot,
BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
AHCIDEBUG_PRINT(("ahci_bio_complete bcount %ld",
ata_bio->bcount), DEBUG_XFERS);
/*
* If it was a write, complete data buffer may have been transfered
* before error detection; in this case don't use cmdh_prdbc
* as it won't reflect what was written to media. Assume nothing
* was transfered and leave bcount as-is.
* For queued commands, PRD Byte Count should not be used, and is
* not required to be valid; in that case underflow is always illegal.
*/
if ((xfer->c_flags & C_NCQ) != 0) {
if (ata_bio->error == NOERROR)
ata_bio->bcount = 0;
} else {
if ((ata_bio->flags & ATA_READ) || ata_bio->error == NOERROR)
ata_bio->bcount -=
le32toh(achp->ahcic_cmdh[xfer->c_slot].cmdh_prdbc);
}
AHCIDEBUG_PRINT((" now %ld\n", ata_bio->bcount), DEBUG_XFERS);
ata_deactivate_xfer(chp, xfer);
(*chp->ch_drive[drive].drv_done)(chp->ch_drive[drive].drv_softc, xfer);
if ((AHCI_TFD_ST(tfd) & WDCS_ERR) == 0)
atastart(chp);
return 0;
}
static void
ahci_channel_stop(struct ahci_softc *sc, struct ata_channel *chp, int flags)
{
int i;
/* stop channel */
AHCI_WRITE(sc, AHCI_P_CMD(chp->ch_channel),
AHCI_READ(sc, AHCI_P_CMD(chp->ch_channel)) & ~AHCI_P_CMD_ST);
/* wait 1s for channel to stop */
for (i = 0; i <100; i++) {
if ((AHCI_READ(sc, AHCI_P_CMD(chp->ch_channel)) & AHCI_P_CMD_CR)
== 0)
break;
ata_delay(chp, 10, "ahcistop", flags);
}
if (AHCI_READ(sc, AHCI_P_CMD(chp->ch_channel)) & AHCI_P_CMD_CR) {
printf("%s: channel wouldn't stop\n", AHCINAME(sc));
/* XXX controller reset ? */
return;
}
if (sc->sc_channel_stop)
sc->sc_channel_stop(sc, chp);
}
static void
ahci_channel_start(struct ahci_softc *sc, struct ata_channel *chp,
int flags, int clo)
{
int i;
uint32_t p_cmd;
/* clear error */
AHCI_WRITE(sc, AHCI_P_SERR(chp->ch_channel),
AHCI_READ(sc, AHCI_P_SERR(chp->ch_channel)));
if (clo) {
/* issue command list override */
KASSERT(sc->sc_ahci_cap & AHCI_CAP_CLO);
AHCI_WRITE(sc, AHCI_P_CMD(chp->ch_channel),
AHCI_READ(sc, AHCI_P_CMD(chp->ch_channel)) | AHCI_P_CMD_CLO);
/* wait 1s for AHCI_CAP_CLO to clear */
for (i = 0; i <100; i++) {
if ((AHCI_READ(sc, AHCI_P_CMD(chp->ch_channel)) &
AHCI_P_CMD_CLO) == 0)
break;
ata_delay(chp, 10, "ahciclo", flags);
}
if (AHCI_READ(sc, AHCI_P_CMD(chp->ch_channel)) & AHCI_P_CMD_CLO) {
printf("%s: channel wouldn't CLO\n", AHCINAME(sc));
/* XXX controller reset ? */
return;
}
}
if (sc->sc_channel_start)
sc->sc_channel_start(sc, chp);
/* and start controller */
p_cmd = AHCI_P_CMD_ICC_AC | AHCI_P_CMD_POD | AHCI_P_CMD_SUD |
AHCI_P_CMD_FRE | AHCI_P_CMD_ST;
if (chp->ch_ndrives > PMP_PORT_CTL &&
chp->ch_drive[PMP_PORT_CTL].drive_type == ATA_DRIVET_PM) {
p_cmd |= AHCI_P_CMD_PMA;
}
AHCI_WRITE(sc, AHCI_P_CMD(chp->ch_channel), p_cmd);
}
/* Recover channel after command failure */
static void
ahci_channel_recover(struct ata_channel *chp, int flags, uint32_t tfd)
{
struct ahci_softc *sc = (struct ahci_softc *)chp->ch_atac;
int drive = ATACH_NODRIVE;
bool reset = false;
ata_channel_lock_owned(chp);
/*
* Read FBS to get the drive which caused the error, if PM is in use.
* According to AHCI 1.3 spec, this register is available regardless
* if FIS-based switching (FBSS) feature is supported, or disabled.
* If FIS-based switching is not in use, it merely maintains single
* pair of DRQ/BSY state, but it is enough since in that case we
* never issue commands for more than one device at the time anyway.
* XXX untested
*/
if (chp->ch_ndrives > PMP_PORT_CTL) {
uint32_t fbs = AHCI_READ(sc, AHCI_P_FBS(chp->ch_channel));
if (fbs & AHCI_P_FBS_SDE) {
drive = (fbs & AHCI_P_FBS_DWE) >> AHCI_P_FBS_DWE_SHIFT;
/*
* Tell HBA to reset PM port X (value in DWE) state,
* and resume processing commands for other ports.
*/
fbs |= AHCI_P_FBS_DEC;
AHCI_WRITE(sc, AHCI_P_FBS(chp->ch_channel), fbs);
for (int i = 0; i < 1000; i++) {
fbs = AHCI_READ(sc,
AHCI_P_FBS(chp->ch_channel));
if ((fbs & AHCI_P_FBS_DEC) == 0)
break;
DELAY(1000);
}
if ((fbs & AHCI_P_FBS_DEC) != 0) {
/* follow non-device specific recovery */
drive = ATACH_NODRIVE;
reset = true;
}
} else {
/* not device specific, reset channel */
drive = ATACH_NODRIVE;
reset = true;
}
} else
drive = 0;
/*
* If BSY or DRQ bits are set, must execute COMRESET to return
* device to idle state. If drive is idle, it's enough to just
* reset CMD.ST, it's not necessary to do software reset.
* After resetting CMD.ST, need to execute READ LOG EXT for NCQ
* to unblock device processing if COMRESET was not done.
*/
if (reset || (AHCI_TFD_ST(tfd) & (WDCS_BSY|WDCS_DRQ)) != 0) {
ahci_reset_channel(chp, flags);
goto out;
}
KASSERT(drive != ATACH_NODRIVE && drive >= 0);
ahci_channel_stop(sc, chp, flags);
ahci_channel_start(sc, chp, flags,
(sc->sc_ahci_cap & AHCI_CAP_CLO) ? 1 : 0);
ata_recovery_resume(chp, drive, tfd, flags);
out:
/* Drive unblocked, back to normal operation */
return;
}
static int
ahci_dma_setup(struct ata_channel *chp, int slot, void *data,
size_t count, int op)
{
int error, seg;
struct ahci_softc *sc = (struct ahci_softc *)chp->ch_atac;
struct ahci_channel *achp = (struct ahci_channel *)chp;
struct ahci_cmd_tbl *cmd_tbl;
struct ahci_cmd_header *cmd_h;
cmd_h = &achp->ahcic_cmdh[slot];
cmd_tbl = achp->ahcic_cmd_tbl[slot];
if (data == NULL) {
cmd_h->cmdh_prdtl = 0;
goto end;
}
error = bus_dmamap_load(sc->sc_dmat, achp->ahcic_datad[slot],
data, count, NULL,
BUS_DMA_NOWAIT | BUS_DMA_STREAMING | op);
if (error) {
printf("%s port %d: failed to load xfer: %d\n",
AHCINAME(sc), chp->ch_channel, error);
return error;
}
bus_dmamap_sync(sc->sc_dmat, achp->ahcic_datad[slot], 0,
achp->ahcic_datad[slot]->dm_mapsize,
(op == BUS_DMA_READ) ? BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE);
for (seg = 0; seg < achp->ahcic_datad[slot]->dm_nsegs; seg++) {
cmd_tbl->cmdt_prd[seg].prd_dba = htole64(
achp->ahcic_datad[slot]->dm_segs[seg].ds_addr);
cmd_tbl->cmdt_prd[seg].prd_dbc = htole32(
achp->ahcic_datad[slot]->dm_segs[seg].ds_len - 1);
}
cmd_tbl->cmdt_prd[seg - 1].prd_dbc |= htole32(AHCI_PRD_DBC_IPC);
cmd_h->cmdh_prdtl = htole16(achp->ahcic_datad[slot]->dm_nsegs);
end:
AHCI_CMDTBL_SYNC(sc, achp, slot, BUS_DMASYNC_PREWRITE);
return 0;
}
#if NATAPIBUS > 0
static void
ahci_atapibus_attach(struct atabus_softc * ata_sc)
{
struct ata_channel *chp = ata_sc->sc_chan;
struct atac_softc *atac = chp->ch_atac;
struct scsipi_adapter *adapt = &atac->atac_atapi_adapter._generic;
struct scsipi_channel *chan = &chp->ch_atapi_channel;
/*
* Fill in the scsipi_adapter.
*/
adapt->adapt_dev = atac->atac_dev;
adapt->adapt_nchannels = atac->atac_nchannels;
adapt->adapt_request = ahci_atapi_scsipi_request;
adapt->adapt_minphys = ahci_atapi_minphys;
atac->atac_atapi_adapter.atapi_probe_device = ahci_atapi_probe_device;
/*
* Fill in the scsipi_channel.
*/
memset(chan, 0, sizeof(*chan));
chan->chan_adapter = adapt;
chan->chan_bustype = &ahci_atapi_bustype;
chan->chan_channel = chp->ch_channel;
chan->chan_flags = SCSIPI_CHAN_OPENINGS;
chan->chan_openings = 1;
chan->chan_max_periph = 1;
chan->chan_ntargets = 1;
chan->chan_nluns = 1;
chp->atapibus = config_found_ia(ata_sc->sc_dev, "atapi", chan,
atapiprint);
}
static void
ahci_atapi_minphys(struct buf *bp)
{
if (bp->b_bcount > MAXPHYS)
bp->b_bcount = MAXPHYS;
minphys(bp);
}
/*
* Kill off all pending xfers for a periph.
*
* Must be called at splbio().
*/
static void
ahci_atapi_kill_pending(struct scsipi_periph *periph)
{
struct atac_softc *atac =
device_private(periph->periph_channel->chan_adapter->adapt_dev);
struct ata_channel *chp =
atac->atac_channels[periph->periph_channel->chan_channel];
ata_kill_pending(&chp->ch_drive[periph->periph_target]);
}
static const struct ata_xfer_ops ahci_atapi_xfer_ops = {
.c_start = ahci_atapi_start,
.c_poll = ahci_atapi_poll,
.c_abort = ahci_atapi_abort,
.c_intr = ahci_atapi_complete,
.c_kill_xfer = ahci_atapi_kill_xfer,
};
static void
ahci_atapi_scsipi_request(struct scsipi_channel *chan,
scsipi_adapter_req_t req, void *arg)
{
struct scsipi_adapter *adapt = chan->chan_adapter;
struct scsipi_periph *periph;
struct scsipi_xfer *sc_xfer;
struct ahci_softc *sc = device_private(adapt->adapt_dev);
struct atac_softc *atac = &sc->sc_atac;
struct ata_xfer *xfer;
int channel = chan->chan_channel;
int drive, s;
switch (req) {
case ADAPTER_REQ_RUN_XFER:
sc_xfer = arg;
periph = sc_xfer->xs_periph;
drive = periph->periph_target;
if (!device_is_active(atac->atac_dev)) {
sc_xfer->error = XS_DRIVER_STUFFUP;
scsipi_done(sc_xfer);
return;
}
xfer = ata_get_xfer(atac->atac_channels[channel], false);
if (xfer == NULL) {
sc_xfer->error = XS_RESOURCE_SHORTAGE;
scsipi_done(sc_xfer);
return;
}
if (sc_xfer->xs_control & XS_CTL_POLL)
xfer->c_flags |= C_POLL;
xfer->c_drive = drive;
xfer->c_flags |= C_ATAPI;
xfer->c_databuf = sc_xfer->data;
xfer->c_bcount = sc_xfer->datalen;
xfer->ops = &ahci_atapi_xfer_ops;
xfer->c_scsipi = sc_xfer;
xfer->c_atapi.c_dscpoll = 0;
s = splbio();
ata_exec_xfer(atac->atac_channels[channel], xfer);
#ifdef DIAGNOSTIC
if ((sc_xfer->xs_control & XS_CTL_POLL) != 0 &&
(sc_xfer->xs_status & XS_STS_DONE) == 0)
panic("ahci_atapi_scsipi_request: polled command "
"not done");
#endif
splx(s);
return;
default:
/* Not supported, nothing to do. */
;
}
}
static int
ahci_atapi_start(struct ata_channel *chp, struct ata_xfer *xfer)
{
struct ahci_softc *sc = (struct ahci_softc *)chp->ch_atac;
struct ahci_channel *achp = (struct ahci_channel *)chp;
struct scsipi_xfer *sc_xfer = xfer->c_scsipi;
struct ahci_cmd_tbl *cmd_tbl;
struct ahci_cmd_header *cmd_h;
AHCIDEBUG_PRINT(("ahci_atapi_start CI 0x%x\n",
AHCI_READ(sc, AHCI_P_CI(chp->ch_channel))), DEBUG_XFERS);
ata_channel_lock_owned(chp);
cmd_tbl = achp->ahcic_cmd_tbl[xfer->c_slot];
AHCIDEBUG_PRINT(("%s port %d tbl %p\n", AHCINAME(sc), chp->ch_channel,
cmd_tbl), DEBUG_XFERS);
satafis_rhd_construct_atapi(xfer, cmd_tbl->cmdt_cfis);
cmd_tbl->cmdt_cfis[rhd_c] |= xfer->c_drive;
memset(&cmd_tbl->cmdt_acmd, 0, sizeof(cmd_tbl->cmdt_acmd));
memcpy(cmd_tbl->cmdt_acmd, sc_xfer->cmd, sc_xfer->cmdlen);
cmd_h = &achp->ahcic_cmdh[xfer->c_slot];
AHCIDEBUG_PRINT(("%s port %d header %p\n", AHCINAME(sc),
chp->ch_channel, cmd_h), DEBUG_XFERS);
if (ahci_dma_setup(chp, xfer->c_slot,
sc_xfer->datalen ? sc_xfer->data : NULL,
sc_xfer->datalen,
(sc_xfer->xs_control & XS_CTL_DATA_IN) ?
BUS_DMA_READ : BUS_DMA_WRITE)) {
sc_xfer->error = XS_DRIVER_STUFFUP;
return ATASTART_ABORT;
}
cmd_h->cmdh_flags = htole16(
((sc_xfer->xs_control & XS_CTL_DATA_OUT) ? AHCI_CMDH_F_WR : 0) |
RHD_FISLEN / 4 | AHCI_CMDH_F_A |
(xfer->c_drive << AHCI_CMDH_F_PMP_SHIFT));
cmd_h->cmdh_prdbc = 0;
AHCI_CMDH_SYNC(sc, achp, xfer->c_slot,
BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
if (xfer->c_flags & C_POLL) {
/* polled command, disable interrupts */
AHCI_WRITE(sc, AHCI_GHC,
AHCI_READ(sc, AHCI_GHC) & ~AHCI_GHC_IE);
}
/* start command */
AHCI_WRITE(sc, AHCI_P_CI(chp->ch_channel), 1U << xfer->c_slot);
if ((xfer->c_flags & C_POLL) == 0) {
callout_reset(&chp->c_timo_callout, mstohz(sc_xfer->timeout),
ata_timeout, chp);
return ATASTART_STARTED;
} else
return ATASTART_POLL;
}
static int
ahci_atapi_poll(struct ata_channel *chp, struct ata_xfer *xfer)
{
struct ahci_softc *sc = (struct ahci_softc *)chp->ch_atac;
struct ahci_channel *achp = (struct ahci_channel *)chp;
/*
* Polled command.
*/
for (int i = 0; i < ATA_DELAY / 10; i++) {
if (xfer->c_scsipi->xs_status & XS_STS_DONE)
break;
ahci_intr_port(achp);
delay(10000);
}
AHCIDEBUG_PRINT(("%s port %d poll end GHC 0x%x IS 0x%x list 0x%x%x fis 0x%x%x CMD 0x%x CI 0x%x\n", AHCINAME(sc), chp->ch_channel,
AHCI_READ(sc, AHCI_GHC), AHCI_READ(sc, AHCI_IS),
AHCI_READ(sc, AHCI_P_CLBU(chp->ch_channel)),
AHCI_READ(sc, AHCI_P_CLB(chp->ch_channel)),
AHCI_READ(sc, AHCI_P_FBU(chp->ch_channel)),
AHCI_READ(sc, AHCI_P_FB(chp->ch_channel)),
AHCI_READ(sc, AHCI_P_CMD(chp->ch_channel)),
AHCI_READ(sc, AHCI_P_CI(chp->ch_channel))),
DEBUG_XFERS);
if ((xfer->c_scsipi->xs_status & XS_STS_DONE) == 0) {
xfer->c_scsipi->error = XS_TIMEOUT;
xfer->ops->c_intr(chp, xfer, 0);
}
/* reenable interrupts */
AHCI_WRITE(sc, AHCI_GHC, AHCI_READ(sc, AHCI_GHC) | AHCI_GHC_IE);
return ATAPOLL_DONE;
}
static void
ahci_atapi_abort(struct ata_channel *chp, struct ata_xfer *xfer)
{
ahci_atapi_complete(chp, xfer, 0);
}
static int
ahci_atapi_complete(struct ata_channel *chp, struct ata_xfer *xfer, int tfd)
{
struct scsipi_xfer *sc_xfer = xfer->c_scsipi;
struct ahci_channel *achp = (struct ahci_channel *)chp;
struct ahci_softc *sc = (struct ahci_softc *)chp->ch_atac;
AHCIDEBUG_PRINT(("ahci_atapi_complete port %d\n", chp->ch_channel),
DEBUG_FUNCS);
if (ata_waitdrain_xfer_check(chp, xfer))
return 0;
if (xfer->c_flags & C_TIMEOU) {
sc_xfer->error = XS_TIMEOUT;
}
if (xfer->c_bcount > 0) {
bus_dmamap_sync(sc->sc_dmat, achp->ahcic_datad[xfer->c_slot], 0,
achp->ahcic_datad[xfer->c_slot]->dm_mapsize,
(sc_xfer->xs_control & XS_CTL_DATA_IN) ?
BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE);
bus_dmamap_unload(sc->sc_dmat, achp->ahcic_datad[xfer->c_slot]);
}
AHCI_CMDH_SYNC(sc, achp, xfer->c_slot,
BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
sc_xfer->resid = sc_xfer->datalen;
sc_xfer->resid -= le32toh(achp->ahcic_cmdh[xfer->c_slot].cmdh_prdbc);
AHCIDEBUG_PRINT(("ahci_atapi_complete datalen %d resid %d\n",
sc_xfer->datalen, sc_xfer->resid), DEBUG_XFERS);
if (AHCI_TFD_ST(tfd) & WDCS_ERR &&
((sc_xfer->xs_control & XS_CTL_REQSENSE) == 0 ||
sc_xfer->resid == sc_xfer->datalen)) {
sc_xfer->error = XS_SHORTSENSE;
sc_xfer->sense.atapi_sense = AHCI_TFD_ERR(tfd);
if ((sc_xfer->xs_periph->periph_quirks &
PQUIRK_NOSENSE) == 0) {
/* ask scsipi to send a REQUEST_SENSE */
sc_xfer->error = XS_BUSY;
sc_xfer->status = SCSI_CHECK;
}
}
ata_deactivate_xfer(chp, xfer);
ata_free_xfer(chp, xfer);
scsipi_done(sc_xfer);
if ((AHCI_TFD_ST(tfd) & WDCS_ERR) == 0)
atastart(chp);
return 0;
}
static void
ahci_atapi_kill_xfer(struct ata_channel *chp, struct ata_xfer *xfer, int reason)
{
struct scsipi_xfer *sc_xfer = xfer->c_scsipi;
bool deactivate = true;
/* remove this command from xfer queue */
switch (reason) {
case KILL_GONE_INACTIVE:
deactivate = false;
/* FALLTHROUGH */
case KILL_GONE:
sc_xfer->error = XS_DRIVER_STUFFUP;
break;
case KILL_RESET:
sc_xfer->error = XS_RESET;
break;
case KILL_REQUEUE:
sc_xfer->error = XS_REQUEUE;
break;
default:
printf("ahci_ata_atapi_kill_xfer: unknown reason %d\n", reason);
panic("ahci_ata_atapi_kill_xfer");
}
if (deactivate)
ata_deactivate_xfer(chp, xfer);
ata_free_xfer(chp, xfer);
scsipi_done(sc_xfer);
}
static void
ahci_atapi_probe_device(struct atapibus_softc *sc, int target)
{
struct scsipi_channel *chan = sc->sc_channel;
struct scsipi_periph *periph;
struct ataparams ids;
struct ataparams *id = &ids;
struct ahci_softc *ahcic =
device_private(chan->chan_adapter->adapt_dev);
struct atac_softc *atac = &ahcic->sc_atac;
struct ata_channel *chp = atac->atac_channels[chan->chan_channel];
struct ata_drive_datas *drvp = &chp->ch_drive[target];
struct scsipibus_attach_args sa;
char serial_number[21], model[41], firmware_revision[9];
int s;
/* skip if already attached */
if (scsipi_lookup_periph(chan, target, 0) != NULL)
return;
/* if no ATAPI device detected at attach time, skip */
if (drvp->drive_type != ATA_DRIVET_ATAPI) {
AHCIDEBUG_PRINT(("ahci_atapi_probe_device: drive %d "
"not present\n", target), DEBUG_PROBE);
return;
}
/* Some ATAPI devices need a bit more time after software reset. */
delay(5000);
if (ata_get_params(drvp, AT_WAIT, id) == 0) {
#ifdef ATAPI_DEBUG_PROBE
printf("%s drive %d: cmdsz 0x%x drqtype 0x%x\n",
AHCINAME(ahcic), target,
id->atap_config & ATAPI_CFG_CMD_MASK,
id->atap_config & ATAPI_CFG_DRQ_MASK);
#endif
periph = scsipi_alloc_periph(M_NOWAIT);
if (periph == NULL) {
aprint_error_dev(sc->sc_dev,
"unable to allocate periph for drive %d\n",
target);
return;
}
periph->periph_dev = NULL;
periph->periph_channel = chan;
periph->periph_switch = &atapi_probe_periphsw;
periph->periph_target = target;
periph->periph_lun = 0;
periph->periph_quirks = PQUIRK_ONLYBIG;
#ifdef SCSIPI_DEBUG
if (SCSIPI_DEBUG_TYPE == SCSIPI_BUSTYPE_ATAPI &&
SCSIPI_DEBUG_TARGET == target)
periph->periph_dbflags |= SCSIPI_DEBUG_FLAGS;
#endif
periph->periph_type = ATAPI_CFG_TYPE(id->atap_config);
if (id->atap_config & ATAPI_CFG_REMOV)
periph->periph_flags |= PERIPH_REMOVABLE;
if (periph->periph_type == T_SEQUENTIAL) {
s = splbio();
drvp->drive_flags |= ATA_DRIVE_ATAPIDSCW;
splx(s);
}
sa.sa_periph = periph;
sa.sa_inqbuf.type = ATAPI_CFG_TYPE(id->atap_config);
sa.sa_inqbuf.removable = id->atap_config & ATAPI_CFG_REMOV ?
T_REMOV : T_FIXED;
strnvisx(model, sizeof(model), id->atap_model, 40,
VIS_TRIM|VIS_SAFE|VIS_OCTAL);
strnvisx(serial_number, sizeof(serial_number), id->atap_serial,
20, VIS_TRIM|VIS_SAFE|VIS_OCTAL);
strnvisx(firmware_revision, sizeof(firmware_revision),
id->atap_revision, 8, VIS_TRIM|VIS_SAFE|VIS_OCTAL);
sa.sa_inqbuf.vendor = model;
sa.sa_inqbuf.product = serial_number;
sa.sa_inqbuf.revision = firmware_revision;
/*
* Determine the operating mode capabilities of the device.
*/
if ((id->atap_config & ATAPI_CFG_CMD_MASK) == ATAPI_CFG_CMD_16)
periph->periph_cap |= PERIPH_CAP_CMD16;
/* XXX This is gross. */
periph->periph_cap |= (id->atap_config & ATAPI_CFG_DRQ_MASK);
drvp->drv_softc = atapi_probe_device(sc, target, periph, &sa);
if (drvp->drv_softc)
ata_probe_caps(drvp);
else {
s = splbio();
drvp->drive_type = ATA_DRIVET_NONE;
splx(s);
}
} else {
AHCIDEBUG_PRINT(("ahci_atapi_get_params: ATAPI_IDENTIFY_DEVICE "
"failed for drive %s:%d:%d\n",
AHCINAME(ahcic), chp->ch_channel, target), DEBUG_PROBE);
s = splbio();
drvp->drive_type = ATA_DRIVET_NONE;
splx(s);
}
}
#endif /* NATAPIBUS */
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