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|
/* $OpenBSD: atascsi.c,v 1.43 2007/11/16 02:17:27 dlg Exp $ */
/*
* Copyright (c) 2007 David Gwynne <dlg@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/buf.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/device.h>
#include <sys/proc.h>
#include <sys/queue.h>
#include <scsi/scsi_all.h>
#include <scsi/scsi_disk.h>
#include <scsi/scsiconf.h>
#include <dev/ata/atascsi.h>
#include <sys/ataio.h>
struct atascsi {
struct device *as_dev;
void *as_cookie;
struct ata_port **as_ports;
struct atascsi_methods *as_methods;
struct scsi_adapter as_switch;
struct scsi_link as_link;
struct scsibus_softc *as_scsibus;
int as_capability;
};
int atascsi_cmd(struct scsi_xfer *);
int atascsi_ioctl(struct scsi_link *, u_long, caddr_t, int,
struct proc *);
/* template */
struct scsi_adapter atascsi_switch = {
atascsi_cmd, /* scsi_cmd */
minphys, /* scsi_minphys */
NULL,
NULL,
atascsi_ioctl /* ioctl */
};
struct scsi_device atascsi_device = {
NULL, NULL, NULL, NULL
};
int atascsi_probe(struct atascsi *, int);
struct ata_xfer *ata_setup_identify(struct ata_port *, int);
void ata_free_identify(struct ata_xfer *);
void ata_complete_identify(struct ata_xfer *,
struct ata_identify *);
int atascsi_disk_cmd(struct scsi_xfer *);
void atascsi_disk_cmd_done(struct ata_xfer *);
int atascsi_disk_inq(struct scsi_xfer *);
void atascsi_disk_inq_done(struct ata_xfer *);
int atascsi_disk_capacity(struct scsi_xfer *);
void atascsi_disk_capacity_done(struct ata_xfer *);
int atascsi_disk_sync(struct scsi_xfer *);
void atascsi_disk_sync_done(struct ata_xfer *);
int atascsi_disk_sense(struct scsi_xfer *);
void atascsi_empty_done(struct ata_xfer *);
int atascsi_atapi_cmd(struct scsi_xfer *);
void atascsi_atapi_cmd_done(struct ata_xfer *);
int atascsi_stuffup(struct scsi_xfer *);
int ata_running = 0;
int ata_exec(struct atascsi *, struct ata_xfer *);
struct ata_xfer *ata_get_xfer(struct ata_port *, int);
void ata_put_xfer(struct ata_xfer *);
struct atascsi *
atascsi_attach(struct device *self, struct atascsi_attach_args *aaa)
{
struct scsibus_attach_args saa;
struct atascsi *as;
int i;
as = malloc(sizeof(*as), M_DEVBUF, M_WAITOK | M_ZERO);
as->as_dev = self;
as->as_cookie = aaa->aaa_cookie;
as->as_methods = aaa->aaa_methods;
as->as_capability = aaa->aaa_capability;
/* copy from template and modify for ourselves */
as->as_switch = atascsi_switch;
as->as_switch.scsi_minphys = aaa->aaa_minphys;
/* fill in our scsi_link */
as->as_link.device = &atascsi_device;
as->as_link.adapter = &as->as_switch;
as->as_link.adapter_softc = as;
as->as_link.adapter_buswidth = aaa->aaa_nports;
as->as_link.luns = 1; /* XXX port multiplier as luns */
as->as_link.adapter_target = aaa->aaa_nports;
as->as_link.openings = aaa->aaa_ncmds;
if (as->as_capability & ASAA_CAP_NEEDS_RESERVED)
as->as_link.openings--;
as->as_ports = malloc(sizeof(struct ata_port *) * aaa->aaa_nports,
M_DEVBUF, M_WAITOK | M_ZERO);
/* fill in the port array with the type of devices there */
for (i = 0; i < as->as_link.adapter_buswidth; i++)
atascsi_probe(as, i);
bzero(&saa, sizeof(saa));
saa.saa_sc_link = &as->as_link;
/* stash the scsibus so we can do hotplug on it */
as->as_scsibus = (struct scsibus_softc *)config_found(self, &saa,
scsiprint);
return (as);
}
int
atascsi_detach(struct atascsi *as)
{
return (0);
}
int
atascsi_probe(struct atascsi *as, int port)
{
struct ata_port *ap;
struct ata_xfer *xa;
int type, s;
if (port > as->as_link.adapter_buswidth)
return (ENXIO);
type = as->as_methods->probe(as->as_cookie, port);
switch (type) {
case ATA_PORT_T_DISK:
break;
case ATA_PORT_T_ATAPI:
as->as_link.flags |= SDEV_ATAPI;
as->as_link.quirks |= SDEV_ONLYBIG;
break;
default:
return (ENODEV);
}
ap = malloc(sizeof(*ap), M_DEVBUF, M_WAITOK | M_ZERO);
ap->ap_as = as;
ap->ap_port = port;
ap->ap_type = type;
as->as_ports[port] = ap;
s = splbio();
xa = ata_get_xfer(ap, 1);
splx(s);
if (xa == NULL)
return (EBUSY);
/*
* FREEZE LOCK the device so malicous users can't lock it on us.
* As there is no harm in issuing this to devices that don't
* support the security feature set we just send it, and don't bother
* checking if the device sends a command abort to tell us it doesn't
* support it
*/
xa->fis->command = ATA_C_SEC_FREEZE_LOCK;
xa->fis->flags = ATA_H2D_FLAGS_CMD;
xa->complete = atascsi_empty_done;
xa->flags = ATA_F_POLL | ATA_F_PIO;
xa->timeout = 1000;
ata_exec(as, xa);
return (0);
}
struct ata_xfer *
ata_setup_identify(struct ata_port *ap, int nosleep)
{
struct ata_xfer *xa;
int s;
s = splbio();
xa = ata_get_xfer(ap, nosleep);
splx(s);
if (xa == NULL)
return (NULL);
xa->data = malloc(512, M_TEMP, nosleep ? (M_NOWAIT | M_ZERO) :
(M_WAITOK | M_ZERO));
if (xa->data == NULL) {
s = splbio();
xa->state = ATA_S_ERROR;
ata_put_xfer(xa);
splx(s);
return (NULL);
}
xa->datalen = 512;
xa->fis->flags = ATA_H2D_FLAGS_CMD;
xa->fis->command = ATA_C_IDENTIFY;
xa->fis->device = 0;
xa->flags = ATA_F_READ | ATA_F_PIO;
return (xa);
}
void
ata_free_identify(struct ata_xfer *xa)
{
free(xa->data, M_TEMP);
ata_put_xfer(xa);
}
void
ata_complete_identify(struct ata_xfer *xa, struct ata_identify *id)
{
u_int16_t *swap;
int i;
bcopy(xa->data, id, sizeof(struct ata_identify));
ata_free_identify(xa);
swap = (u_int16_t *)id->serial;
for (i = 0; i < sizeof(id->serial) / sizeof(u_int16_t); i++)
swap[i] = swap16(swap[i]);
swap = (u_int16_t *)id->firmware;
for (i = 0; i < sizeof(id->firmware) / sizeof(u_int16_t); i++)
swap[i] = swap16(swap[i]);
swap = (u_int16_t *)id->model;
for (i = 0; i < sizeof(id->model) / sizeof(u_int16_t); i++)
swap[i] = swap16(swap[i]);
}
int
atascsi_cmd(struct scsi_xfer *xs)
{
struct scsi_link *link = xs->sc_link;
struct atascsi *as = link->adapter_softc;
struct ata_port *ap = as->as_ports[link->target];
if (ap == NULL)
return (atascsi_stuffup(xs));
switch (ap->ap_type) {
case ATA_PORT_T_DISK:
return (atascsi_disk_cmd(xs));
case ATA_PORT_T_ATAPI:
return (atascsi_atapi_cmd(xs));
case ATA_PORT_T_NONE:
default:
return (atascsi_stuffup(xs));
}
}
int
atascsi_disk_cmd(struct scsi_xfer *xs)
{
struct scsi_link *link = xs->sc_link;
struct atascsi *as = link->adapter_softc;
struct ata_port *ap = as->as_ports[link->target];
int s, flags = 0;
struct scsi_rw *rw;
struct scsi_rw_big *rwb;
struct ata_xfer *xa;
struct ata_fis_h2d *fis;
u_int64_t lba;
u_int32_t sector_count;
switch (xs->cmd->opcode) {
case READ_BIG:
case READ_COMMAND:
flags = ATA_F_READ;
break;
case WRITE_BIG:
case WRITE_COMMAND:
flags = ATA_F_WRITE;
/* deal with io outside the switch */
break;
case SYNCHRONIZE_CACHE:
return (atascsi_disk_sync(xs));
case REQUEST_SENSE:
return (atascsi_disk_sense(xs));
case INQUIRY:
return (atascsi_disk_inq(xs));
case READ_CAPACITY:
return (atascsi_disk_capacity(xs));
case TEST_UNIT_READY:
case START_STOP:
case PREVENT_ALLOW:
return (COMPLETE);
default:
return (atascsi_stuffup(xs));
}
s = splbio();
xa = ata_get_xfer(ap, xs->flags & SCSI_NOSLEEP);
splx(s);
if (xa == NULL)
return (NO_CCB);
xa->flags = flags;
if (xs->cmdlen == 6) {
rw = (struct scsi_rw *)xs->cmd;
lba = _3btol(rw->addr) & (SRW_TOPADDR << 16 | 0xffff);
sector_count = rw->length ? rw->length : 0x100;
} else {
rwb = (struct scsi_rw_big *)xs->cmd;
lba = _4btol(rwb->addr);
sector_count = _2btol(rwb->length);
}
fis = xa->fis;
fis->flags = ATA_H2D_FLAGS_CMD;
fis->lba_low = lba & 0xff;
fis->lba_mid = (lba >> 8) & 0xff;
fis->lba_high = (lba >> 16) & 0xff;
if (ap->ap_ncqdepth && !(xs->flags & SCSI_POLL)) {
/* Use NCQ */
xa->flags |= ATA_F_NCQ;
fis->command = (xa->flags & ATA_F_WRITE) ?
ATA_C_WRITE_FPDMA : ATA_C_READ_FPDMA;
fis->device = ATA_H2D_DEVICE_LBA;
fis->lba_low_exp = (lba >> 24) & 0xff;
fis->lba_mid_exp = (lba >> 32) & 0xff;
fis->lba_high_exp = (lba >> 40) & 0xff;
fis->sector_count = xa->tag << 3;
fis->features = sector_count & 0xff;
fis->features_exp = (sector_count >> 8) & 0xff;
} else if (sector_count > 0x100 || lba > 0xfffffff) {
/* Use LBA48 */
fis->command = (xa->flags & ATA_F_WRITE) ?
ATA_C_WRITEDMA_EXT : ATA_C_READDMA_EXT;
fis->device = ATA_H2D_DEVICE_LBA;
fis->lba_low_exp = (lba >> 24) & 0xff;
fis->lba_mid_exp = (lba >> 32) & 0xff;
fis->lba_high_exp = (lba >> 40) & 0xff;
fis->sector_count = sector_count & 0xff;
fis->sector_count_exp = (sector_count >> 8) & 0xff;
} else {
/* Use LBA */
fis->command = (xa->flags & ATA_F_WRITE) ?
ATA_C_WRITEDMA : ATA_C_READDMA;
fis->device = ATA_H2D_DEVICE_LBA | ((lba >> 24) & 0x0f);
fis->sector_count = sector_count & 0xff;
}
xa->data = xs->data;
xa->datalen = xs->datalen;
xa->complete = atascsi_disk_cmd_done;
xa->timeout = xs->timeout;
xa->atascsi_private = xs;
if (xs->flags & SCSI_POLL)
xa->flags |= ATA_F_POLL;
return (ata_exec(as, xa));
}
void
atascsi_empty_done(struct ata_xfer *xa)
{
ata_put_xfer(xa);
}
void
atascsi_disk_cmd_done(struct ata_xfer *xa)
{
struct scsi_xfer *xs = xa->atascsi_private;
switch (xa->state) {
case ATA_S_COMPLETE:
xs->error = XS_NOERROR;
break;
case ATA_S_ERROR:
/* fake sense? */
xs->error = XS_DRIVER_STUFFUP;
break;
case ATA_S_TIMEOUT:
xs->error = XS_TIMEOUT;
break;
default:
panic("atascsi_disk_cmd_done: unexpected ata_xfer state (%d)",
xa->state);
}
xs->resid = xa->resid;
ata_put_xfer(xa);
xs->flags |= ITSDONE;
scsi_done(xs);
}
int
atascsi_disk_inq(struct scsi_xfer *xs)
{
struct scsi_link *link = xs->sc_link;
struct atascsi *as = link->adapter_softc;
struct ata_port *ap = as->as_ports[link->target];
struct ata_xfer *xa;
xa = ata_setup_identify(ap, xs->flags & SCSI_NOSLEEP);
if (xa == NULL)
return (NO_CCB);
xa->complete = atascsi_disk_inq_done;
xa->timeout = xs->timeout;
xa->atascsi_private = xs;
if (xs->flags & SCSI_POLL)
xa->flags |= ATA_F_POLL;
return (ata_exec(as, xa));
}
void
atascsi_disk_inq_done(struct ata_xfer *xa)
{
struct scsi_xfer *xs = xa->atascsi_private;
struct scsi_link *link = xs->sc_link;
struct atascsi *as = link->adapter_softc;
struct ata_port *ap = as->as_ports[link->target];
struct ata_identify id;
struct scsi_inquiry_data inq;
int host_ncqdepth, complete = 0;
switch (xa->state) {
case ATA_S_COMPLETE:
ata_complete_identify(xa, &id);
bzero(&inq, sizeof(inq));
inq.device = T_DIRECT;
inq.version = 2;
inq.response_format = 2;
inq.additional_length = 32;
bcopy("ATA ", inq.vendor, sizeof(inq.vendor));
bcopy(id.model, inq.product, sizeof(inq.product));
bcopy(id.firmware, inq.revision, sizeof(inq.revision));
bcopy(&inq, xs->data, MIN(sizeof(inq), xs->datalen));
xs->error = XS_NOERROR;
complete = 1;
break;
case ATA_S_ERROR:
case ATA_S_TIMEOUT:
ata_free_identify(xa);
xs->error = (xa->state == ATA_S_TIMEOUT ? XS_TIMEOUT :
XS_DRIVER_STUFFUP);
break;
default:
panic("atascsi_disk_inq_done: unexpected ata_xfer state (%d)",
xa->state);
}
xs->flags |= ITSDONE;
scsi_done(xs);
if (!complete || (ap->ap_features & ATA_PORT_F_PROBED))
return;
ap->ap_features = ATA_PORT_F_PROBED;
if (as->as_capability & ASAA_CAP_NCQ && (letoh16(id.satacap) &
(1 << 8))) {
/*
* At this point, openings should be the number of commands the
* host controller supports, less the one that is outstanding
* as a result of this inquiry, less any reserved slot the
* host controller needs for recovery.
*/
host_ncqdepth = link->openings + 1 + ((as->as_capability &
ASAA_CAP_NEEDS_RESERVED) ? 1 : 0);
ap->ap_ncqdepth = (letoh16(id.qdepth) & 0x1f) + 1;
/* Limit the number of openings to what the device supports. */
if (host_ncqdepth > ap->ap_ncqdepth)
link->openings -= (host_ncqdepth - ap->ap_ncqdepth);
/*
* XXX throw away any xfers that have tag numbers higher than
* what the device supports.
*/
while (host_ncqdepth--) {
struct ata_xfer *xa;
xa = ata_get_xfer(ap, 1);
if (xa->tag < ap->ap_ncqdepth) {
xa->state = ATA_S_COMPLETE;
ata_put_xfer(xa);
}
}
}
}
int
atascsi_disk_sync(struct scsi_xfer *xs)
{
struct scsi_link *link = xs->sc_link;
struct atascsi *as = link->adapter_softc;
struct ata_port *ap = as->as_ports[link->target];
struct ata_xfer *xa;
int s;
s = splbio();
xa = ata_get_xfer(ap, xs->flags & SCSI_NOSLEEP);
splx(s);
if (xa == NULL)
return (NO_CCB);
xa->datalen = 0;
xa->flags = ATA_F_READ;
xa->complete = atascsi_disk_sync_done;
/* Spec says flush cache can take >30 sec, so give it at least 45. */
xa->timeout = (xs->timeout < 45000) ? 45000 : xs->timeout;
xa->atascsi_private = xs;
if (xs->flags & SCSI_POLL)
xa->flags |= ATA_F_POLL;
xa->fis->flags = ATA_H2D_FLAGS_CMD;
xa->fis->command = ATA_C_FLUSH_CACHE;
xa->fis->device = 0;
return (ata_exec(as, xa));
}
void
atascsi_disk_sync_done(struct ata_xfer *xa)
{
struct scsi_xfer *xs = xa->atascsi_private;
switch (xa->state) {
case ATA_S_COMPLETE:
xs->error = XS_NOERROR;
break;
case ATA_S_ERROR:
case ATA_S_TIMEOUT:
printf("atascsi_disk_sync_done: %s\n",
xa->state == ATA_S_TIMEOUT ? "timeout" : "error");
xs->error = (xa->state == ATA_S_TIMEOUT ? XS_TIMEOUT :
XS_DRIVER_STUFFUP);
break;
default:
panic("atascsi_disk_sync_done: unexpected ata_xfer state (%d)",
xa->state);
}
ata_put_xfer(xa);
xs->flags |= ITSDONE;
scsi_done(xs);
}
int
atascsi_disk_capacity(struct scsi_xfer *xs)
{
struct scsi_link *link = xs->sc_link;
struct atascsi *as = link->adapter_softc;
struct ata_port *ap = as->as_ports[link->target];
struct ata_xfer *xa;
xa = ata_setup_identify(ap, xs->flags & SCSI_NOSLEEP);
if (xa == NULL)
return (NO_CCB);
xa->complete = atascsi_disk_capacity_done;
xa->timeout = xs->timeout;
xa->atascsi_private = xs;
if (xs->flags & SCSI_POLL)
xa->flags |= ATA_F_POLL;
return (ata_exec(as, xa));
}
void
atascsi_disk_capacity_done(struct ata_xfer *xa)
{
struct scsi_xfer *xs = xa->atascsi_private;
struct ata_identify id;
struct scsi_read_cap_data rcd;
u_int64_t capacity;
int i;
switch (xa->state) {
case ATA_S_COMPLETE:
ata_complete_identify(xa, &id);
bzero(&rcd, sizeof(rcd));
if (letoh16(id.cmdset83) & 0x0400) {
/* LBA48 feature set supported */
for (i = 3; i >= 0; --i) {
capacity <<= 16;
capacity += letoh16(id.addrsecxt[i]);
}
} else {
capacity = letoh16(id.addrsec[1]);
capacity <<= 16;
capacity += letoh16(id.addrsec[0]);
}
/* XXX SCSI layer can't handle a device this big yet */
if (capacity > 0xffffffff)
capacity = 0xffffffff;
_lto4b(capacity - 1, rcd.addr);
_lto4b(512, rcd.length);
bcopy(&rcd, xs->data, MIN(sizeof(rcd), xs->datalen));
xs->error = XS_NOERROR;
break;
case ATA_S_ERROR:
case ATA_S_TIMEOUT:
ata_free_identify(xa);
xs->error = (xa->state == ATA_S_TIMEOUT ? XS_TIMEOUT :
XS_DRIVER_STUFFUP);
break;
default:
panic("atascsi_disk_capacity_done: "
"unexpected ata_xfer state (%d)", xa->state);
}
xs->flags |= ITSDONE;
scsi_done(xs);
}
int
atascsi_disk_sense(struct scsi_xfer *xs)
{
struct scsi_sense_data *sd = (struct scsi_sense_data *)xs->data;
int s;
bzero(xs->data, xs->datalen);
/* check datalen > sizeof(struct scsi_sense_data)? */
sd->error_code = 0x70; /* XXX magic */
sd->flags = SKEY_NO_SENSE;
xs->error = XS_NOERROR;
xs->flags |= ITSDONE;
s = splbio();
scsi_done(xs);
splx(s);
return (COMPLETE);
}
int
atascsi_atapi_cmd(struct scsi_xfer *xs)
{
struct scsi_link *link = xs->sc_link;
struct atascsi *as = link->adapter_softc;
struct ata_port *ap = as->as_ports[link->target];
int s;
struct ata_xfer *xa;
struct ata_fis_h2d *fis;
s = splbio();
xa = ata_get_xfer(ap, xs->flags & SCSI_NOSLEEP);
splx(s);
if (xa == NULL)
return (NO_CCB);
switch (xs->flags & (SCSI_DATA_IN | SCSI_DATA_OUT)) {
case SCSI_DATA_IN:
xa->flags = ATA_F_PACKET | ATA_F_READ;
break;
case SCSI_DATA_OUT:
xa->flags = ATA_F_PACKET | ATA_F_WRITE;
break;
default:
xa->flags = ATA_F_PACKET;
}
xa->data = xs->data;
xa->datalen = xs->datalen;
xa->complete = atascsi_atapi_cmd_done;
xa->timeout = xs->timeout;
xa->atascsi_private = xs;
if (xs->flags & SCSI_POLL)
xa->flags |= ATA_F_POLL;
fis = xa->fis;
fis->flags = ATA_H2D_FLAGS_CMD;
fis->command = ATA_C_PACKET;
fis->device = 0;
fis->sector_count = xa->tag << 3;
fis->features = ATA_H2D_FEATURES_DMA | ((xa->flags & ATA_F_WRITE) ?
ATA_H2D_FEATURES_DIR_WRITE : ATA_H2D_FEATURES_DIR_READ);
fis->lba_mid = 0x00;
fis->lba_high = 0x20;
/* Copy SCSI command into ATAPI packet. */
memcpy(xa->packetcmd, xs->cmd, xs->cmdlen);
return (ata_exec(as, xa));
}
void
atascsi_atapi_cmd_done(struct ata_xfer *xa)
{
struct scsi_xfer *xs = xa->atascsi_private;
struct scsi_sense_data *sd = &xs->sense;
switch (xa->state) {
case ATA_S_COMPLETE:
xs->error = XS_NOERROR;
break;
case ATA_S_ERROR:
/* Return PACKET sense data */
sd->error_code = SSD_ERRCODE_CURRENT;
sd->flags = (xa->rfis.error & 0xf0) >> 4;
if (xa->rfis.error & 0x04)
sd->flags = SKEY_ILLEGAL_REQUEST;
if (xa->rfis.error & 0x02)
sd->flags |= SSD_EOM;
if (xa->rfis.error & 0x01)
sd->flags |= SSD_ILI;
xs->error = XS_SENSE;
break;
case ATA_S_TIMEOUT:
printf("atascsi_atapi_cmd_done, timeout\n");
xs->error = XS_TIMEOUT;
break;
default:
panic("atascsi_atapi_cmd_done: unexpected ata_xfer state (%d)",
xa->state);
}
xs->resid = xa->resid;
ata_put_xfer(xa);
xs->flags |= ITSDONE;
scsi_done(xs);
}
int
atascsi_stuffup(struct scsi_xfer *xs)
{
int s;
xs->error = XS_DRIVER_STUFFUP;
xs->flags |= ITSDONE;
s = splbio();
scsi_done(xs);
splx(s);
return (COMPLETE);
}
int atascsi_ioctl_cmd(struct atascsi *, struct ata_port *, atareq_t *);
void atascsi_ioctl_done(struct ata_xfer *);
int
atascsi_ioctl(struct scsi_link *link, u_long cmd, caddr_t addr, int flags,
struct proc *p)
{
struct atascsi *as = link->adapter_softc;
struct ata_port *ap = as->as_ports[link->target];
switch (cmd) {
case ATAIOCCOMMAND:
return (atascsi_ioctl_cmd(as, ap, (atareq_t *)addr));
default:
return (ENOTTY);
}
}
int
atascsi_ioctl_cmd(struct atascsi *as, struct ata_port *ap, atareq_t *atareq)
{
struct ata_xfer *xa;
struct ata_fis_h2d *fis;
int s;
s = splbio();
xa = ata_get_xfer(ap, 0);
splx(s);
if (xa == NULL)
return (ENOMEM);
fis = xa->fis;
fis->flags = ATA_H2D_FLAGS_CMD;
fis->command = atareq->command;
fis->features = atareq->features;
fis->lba_low = atareq->sec_num;
fis->lba_mid = atareq->cylinder;
fis->lba_high = atareq->cylinder >> 8;
fis->device = atareq->head & 0x0f;
fis->sector_count = atareq->sec_count;
xa->data = atareq->databuf;
xa->datalen = atareq->datalen;
xa->complete = atascsi_ioctl_done;
xa->timeout = atareq->timeout;
xa->flags = 0;
if (atareq->flags & ATACMD_READ)
xa->flags |= ATA_F_READ;
if (atareq->flags & ATACMD_WRITE)
xa->flags |= ATA_F_WRITE;
xa->atascsi_private = NULL;
switch (as->as_methods->ata_cmd(xa)) {
case ATA_COMPLETE:
break;
case ATA_QUEUED:
while (xa->state == ATA_S_PENDING || xa->state == ATA_S_ONCHIP)
tsleep(xa, PRIBIO, "atascsi", 0);
break;
case ATA_ERROR:
s = splbio();
ata_put_xfer(xa);
splx(s);
atareq->retsts = ATACMD_ERROR;
return (EIO);
default:
panic("atascsi_ioctl_cmd: unexpected return from ata_cmd");
}
switch (xa->state) {
case ATA_S_COMPLETE:
atareq->retsts = ATACMD_OK;
break;
case ATA_S_ERROR:
atareq->retsts = ATACMD_ERROR;
break;
case ATA_S_TIMEOUT:
atareq->retsts = ATACMD_TIMEOUT;
break;
default:
panic("atascsi_ioctl_cmd: unexpected ata_xfer state (%d)",
xa->state);
}
s = splbio();
ata_put_xfer(xa);
splx(s);
return (0);
}
void
atascsi_ioctl_done(struct ata_xfer *xa)
{
wakeup(xa);
}
int
ata_exec(struct atascsi *as, struct ata_xfer *xa)
{
int polled = xa->flags & ATA_F_POLL;
switch (as->as_methods->ata_cmd(xa)) {
case ATA_COMPLETE:
case ATA_ERROR:
return (COMPLETE);
case ATA_QUEUED:
if (!polled)
return (SUCCESSFULLY_QUEUED);
default:
panic("unexpected return from ata_exec");
}
}
struct ata_xfer *
ata_get_xfer(struct ata_port *ap, int nosleep /* XXX unused */)
{
struct atascsi *as = ap->ap_as;
struct ata_xfer *xa;
xa = as->as_methods->ata_get_xfer(as->as_cookie, ap->ap_port);
if (xa != NULL)
xa->fis->type = ATA_FIS_TYPE_H2D;
return (xa);
}
void
ata_put_xfer(struct ata_xfer *xa)
{
xa->ata_put_xfer(xa);
}
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