src/sys/dev/scsipi/atapi_wdc.c - diff

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Diff for /src/sys/dev/scsipi/atapi_wdc.c between version 1.55 and 1.55.6.7

version 1.55, 2002/09/27 15:37:33

version 1.55.6.7, 2005/11/10 14:07:47

Line 14

* 3. All advertising materials mentioning features or use of this software

* must display the following acknowledgement:

* This product includes software developed by Manuel Bouyer.

* 4. Neither the name of the University nor the names of its contributors

* 4. The name of the author may not be used to endorse or promote products

* may be used to endorse or promote products derived from this software

* derived from this software without specific prior written permission.

* without specific prior written permission.

* 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, "$NetBSD$");

#ifndef WDCDEBUG

#ifndef ATADEBUG

#define WDCDEBUG

#define ATADEBUG

#endif /* WDCDEBUG */

#endif /* ATADEBUG */

#include <sys/param.h>

#include <sys/systm.h>

Line 54 __KERNEL_RCSID(0, "$NetBSD$");

Line 52 __KERNEL_RCSID(0, "$NetBSD$");

#include <machine/bus.h>

#ifndef __BUS_SPACE_HAS_STREAM_METHODS

#define bus_space_write_multi_stream_2 bus_space_write_multi_2

#define bus_space_write_multi_stream_4 bus_space_write_multi_4

#define bus_space_read_multi_stream_2 bus_space_read_multi_2

#define bus_space_read_multi_stream_4 bus_space_read_multi_4

#endif /* __BUS_SPACE_HAS_STREAM_METHODS */

#include <dev/ata/atareg.h>

Line 72 __KERNEL_RCSID(0, "$NetBSD$");

Line 70 __KERNEL_RCSID(0, "$NetBSD$");

#define DEBUG_STATUS 0x04

#define DEBUG_FUNCS 0x08

#define DEBUG_PROBE 0x10

#ifdef WDCDEBUG

#ifdef ATADEBUG

int wdcdebug_atapi_mask = 0;

#define WDCDEBUG_PRINT(args, level) \

#define ATADEBUG_PRINT(args, level) \

if (wdcdebug_atapi_mask & (level)) \

printf args

#else

#define WDCDEBUG_PRINT(args, level)

#define ATADEBUG_PRINT(args, level)

#endif

#define ATAPI_DELAY 10 /* 10 ms, this is used only before sending a cmd */

int wdc_atapi_get_params __P((struct scsipi_channel *, int, int,

#define ATAPI_MODE_DELAY 1000 /* 1s, timeout for SET_FEATYRE cmds */

struct ataparams *));

void wdc_atapi_probe_device __P((struct atapibus_softc *, int));

static int wdc_atapi_get_params(struct scsipi_channel *, int,

void wdc_atapi_minphys __P((struct buf *bp));

struct ataparams *);

void wdc_atapi_start __P((struct channel_softc *,struct wdc_xfer *));

static void wdc_atapi_probe_device(struct atapibus_softc *, int);

int wdc_atapi_intr __P((struct channel_softc *, struct wdc_xfer *, int));

static void wdc_atapi_minphys (struct buf *bp);

void wdc_atapi_kill_xfer __P((struct channel_softc *, struct wdc_xfer *));

static void wdc_atapi_start(struct ata_channel *,struct ata_xfer *);

int wdc_atapi_ctrl __P((struct channel_softc *, struct wdc_xfer *, int));

static int wdc_atapi_intr(struct ata_channel *, struct ata_xfer *, int);

void wdc_atapi_phase_complete __P((struct wdc_xfer *));

static void wdc_atapi_kill_xfer(struct ata_channel *,

void wdc_atapi_done __P((struct channel_softc *, struct wdc_xfer *));

struct ata_xfer *, int);

void wdc_atapi_reset __P((struct channel_softc *, struct wdc_xfer *));

static void wdc_atapi_phase_complete(struct ata_xfer *);

void wdc_atapi_scsipi_request __P((struct scsipi_channel *,

static void wdc_atapi_done(struct ata_channel *, struct ata_xfer *);

scsipi_adapter_req_t, void *));

static void wdc_atapi_reset(struct ata_channel *, struct ata_xfer *);

void wdc_atapi_kill_pending __P((struct scsipi_periph *));

static void wdc_atapi_scsipi_request(struct scsipi_channel *,

void wdc_atapi_polldsc __P((void *arg));

scsipi_adapter_req_t, void *);

static void wdc_atapi_kill_pending(struct scsipi_periph *);

static void wdc_atapi_polldsc(void *arg);

#define MAX_SIZE MAXPHYS

const struct scsipi_bustype wdc_atapi_bustype = {

static const struct scsipi_bustype wdc_atapi_bustype = {

SCSIPI_BUSTYPE_ATAPI,

atapi_scsipi_cmd,

atapi_interpret_sense,

Line 109 const struct scsipi_bustype wdc_atapi_bu

};

void

wdc_atapibus_attach(chp)

wdc_atapibus_attach(struct atabus_softc *ata_sc)

struct channel_softc *chp;

{

struct wdc_softc *wdc = chp->wdc;

struct ata_channel *chp = ata_sc->sc_chan;

struct scsipi_adapter *adapt = &wdc->sc_atapi_adapter._generic;

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 = &wdc->sc_dev;

adapt->adapt_dev = &atac->atac_dev;

adapt->adapt_nchannels = wdc->nchannels;

adapt->adapt_nchannels = atac->atac_nchannels;

adapt->adapt_request = wdc_atapi_scsipi_request;

adapt->adapt_minphys = wdc_atapi_minphys;

if (wdc->cap & WDC_CAPABILITY_NOIRQ)

if (atac->atac_cap & ATAC_CAP_NOIRQ)

adapt->adapt_flags |= SCSIPI_ADAPT_POLL_ONLY;

wdc->sc_atapi_adapter.atapi_probe_device = wdc_atapi_probe_device;

atac->atac_atapi_adapter.atapi_probe_device = wdc_atapi_probe_device;

* Fill in the scsipi_channel.

Line 133 wdc_atapibus_attach(chp)

memset(chan, 0, sizeof(*chan));

chan->chan_adapter = adapt;

chan->chan_bustype = &wdc_atapi_bustype;

chan->chan_channel = chp->channel;

chan->chan_channel = chp->ch_channel;

chan->chan_flags = SCSIPI_CHAN_OPENINGS;

chan->chan_openings = 1;

chan->chan_max_periph = 1;

chan->chan_ntargets = 2;

chan->chan_nluns = 1;

chp->atapibus = config_found(&wdc->sc_dev, chan, atapiprint);

chp->atapibus = config_found_ia(&ata_sc->sc_dev, "atapi", chan,

atapiprint);

}

void

static void

wdc_atapi_minphys(bp)

wdc_atapi_minphys(struct buf *bp)

struct buf *bp;

{

if (bp->b_bcount > MAX_SIZE)

Line 158 wdc_atapi_minphys(bp)

* Must be called at splbio().

void

static void

wdc_atapi_kill_pending(periph)

wdc_atapi_kill_pending(struct scsipi_periph *periph)

struct scsipi_periph *periph;

{

struct wdc_softc *wdc =

struct atac_softc *atac =

(void *)periph->periph_channel->chan_adapter->adapt_dev;

struct channel_softc *chp =

struct ata_channel *chp =

wdc->channels[periph->periph_channel->chan_channel];

atac->atac_channels[periph->periph_channel->chan_channel];

wdc_kill_pending(chp);

ata_kill_pending(&chp->ch_drive[periph->periph_target]);

}

void

static void

wdc_atapi_kill_xfer(chp, xfer)

wdc_atapi_kill_xfer(struct ata_channel *chp, struct ata_xfer *xfer, int reason)

struct channel_softc *chp;

struct wdc_xfer *xfer;

{

struct scsipi_xfer *sc_xfer = xfer->cmd;

struct scsipi_xfer *sc_xfer = xfer->c_cmd;

callout_stop(&chp->ch_callout);

/* remove this command from xfer queue */

wdc_free_xfer(chp, xfer);

switch (reason) {

sc_xfer->error = XS_DRIVER_STUFFUP;

case KILL_GONE:

sc_xfer->error = XS_DRIVER_STUFFUP;

break;

case KILL_RESET:

sc_xfer->error = XS_RESET;

break;

default:

printf("wdc_ata_bio_kill_xfer: unknown reason %d\n",

reason);

panic("wdc_ata_bio_kill_xfer");

}

ata_free_xfer(chp, xfer);

scsipi_done(sc_xfer);

}

int

static int

wdc_atapi_get_params(chan, drive, flags, id)

wdc_atapi_get_params(struct scsipi_channel *chan, int drive,

struct scsipi_channel *chan;

struct ataparams *id)

int drive, flags;

struct ataparams *id;

{

struct wdc_softc *wdc = (void *)chan->chan_adapter->adapt_dev;

struct channel_softc *chp = wdc->channels[chan->chan_channel];

struct atac_softc *atac = &wdc->sc_atac;

struct wdc_command wdc_c;

struct wdc_regs *wdr = &wdc->regs[chan->chan_channel];

struct ata_channel *chp = atac->atac_channels[chan->chan_channel];

struct ata_command ata_c;

/* if no ATAPI device detected at wdc attach time, skip */

* XXX this will break scsireprobe if this is of any interest for

* ATAPI devices one day.

if ((chp->ch_drive[drive].drive_flags & DRIVE_ATAPI) == 0) {

WDCDEBUG_PRINT(("wdc_atapi_get_params: drive %d not present\n",

ATADEBUG_PRINT(("wdc_atapi_get_params: drive %d not present\n",

drive), DEBUG_PROBE);

return -1;

}

memset(&wdc_c, 0, sizeof(struct wdc_command));

wdc_c.r_command = ATAPI_SOFT_RESET;

memset(&ata_c, 0, sizeof(struct ata_command));

wdc_c.r_st_bmask = 0;

ata_c.r_command = ATAPI_SOFT_RESET;

wdc_c.r_st_pmask = 0;

ata_c.r_st_bmask = 0;

wdc_c.flags = AT_POLL;

ata_c.r_st_pmask = 0;

wdc_c.timeout = WDC_RESET_WAIT;

ata_c.flags = AT_WAIT | AT_POLL;

if (wdc_exec_command(&chp->ch_drive[drive], &wdc_c) != WDC_COMPLETE) {

ata_c.timeout = WDC_RESET_WAIT;

if (wdc_exec_command(&chp->ch_drive[drive], &ata_c) != ATACMD_COMPLETE) {

printf("wdc_atapi_get_params: ATAPI_SOFT_RESET failed for"

" drive %s:%d:%d: driver failed\n",

chp->wdc->sc_dev.dv_xname, chp->channel, drive);

atac->atac_dev.dv_xname, chp->ch_channel, drive);

panic("wdc_atapi_get_params");

}

if (wdc_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) {

if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) {

WDCDEBUG_PRINT(("wdc_atapi_get_params: ATAPI_SOFT_RESET "

ATADEBUG_PRINT(("wdc_atapi_get_params: ATAPI_SOFT_RESET "

"failed for drive %s:%d:%d: error 0x%x\n",

chp->wdc->sc_dev.dv_xname, chp->channel, drive,

atac->atac_dev.dv_xname, chp->ch_channel, drive,

wdc_c.r_error), DEBUG_PROBE);

ata_c.r_error), DEBUG_PROBE);

return -1;

}

chp->ch_drive[drive].state = 0;

bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_status);

bus_space_read_1(wdr->cmd_iot, wdr->cmd_iohs[wd_status], 0);

/* Some ATAPI devices need a bit more time after software reset. */

delay(5000);

if (ata_get_params(&chp->ch_drive[drive], AT_POLL, id) != 0) {

if (ata_get_params(&chp->ch_drive[drive], AT_WAIT, id) != 0) {

WDCDEBUG_PRINT(("wdc_atapi_get_params: ATAPI_IDENTIFY_DEVICE "

ATADEBUG_PRINT(("wdc_atapi_get_params: ATAPI_IDENTIFY_DEVICE "

"failed for drive %s:%d:%d: error 0x%x\n",

chp->wdc->sc_dev.dv_xname, chp->channel, drive,

atac->atac_dev.dv_xname, chp->ch_channel, drive,

wdc_c.r_error), DEBUG_PROBE);

ata_c.r_error), DEBUG_PROBE);

return -1;

}

return 0;

}

void

static void

wdc_atapi_probe_device(sc, target)

wdc_atapi_probe_device(struct atapibus_softc *sc, int target)

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 wdc_softc *wdc = (void *)chan->chan_adapter->adapt_dev;

struct channel_softc *chp = wdc->channels[chan->chan_channel];

struct atac_softc *atac = &wdc->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 (wdc_atapi_get_params(chan, target,

if (wdc_atapi_get_params(chan, target, id) == 0) {

XS_CTL_POLL|XS_CTL_NOSLEEP, id) == 0) {

#ifdef ATAPI_DEBUG_PROBE

printf("%s drive %d: cmdsz 0x%x drqtype 0x%x\n",

sc->sc_dev.dv_xname, target,

Line 277 wdc_atapi_probe_device(sc, target)

Line 280 wdc_atapi_probe_device(sc, target)

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 &&

Line 286 wdc_atapi_probe_device(sc, target)

Line 290 wdc_atapi_probe_device(sc, target)

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)

if (periph->periph_type == T_SEQUENTIAL) {

s = splbio();

drvp->drive_flags |= DRIVE_ATAPIST;

splx(s);

}

sa.sa_periph = periph;

sa.sa_inqbuf.type = ATAPI_CFG_TYPE(id->atap_config);

Line 311 wdc_atapi_probe_device(sc, target)

Line 318 wdc_atapi_probe_device(sc, target)

drvp->drv_softc = atapi_probe_device(sc, target, periph, &sa);

if (drvp->drv_softc)

wdc_probe_caps(drvp);

ata_probe_caps(drvp);

else {

s = splbio();

drvp->drive_flags &= ~DRIVE_ATAPI;

splx(s);

}

} else {

s = splbio();

drvp->drive_flags &= ~DRIVE_ATAPI;

splx(s);

}

void

static void

wdc_atapi_scsipi_request(chan, req, arg)

wdc_atapi_scsipi_request(struct scsipi_channel *chan, scsipi_adapter_req_t req,

struct scsipi_channel *chan;

void *arg)

scsipi_adapter_req_t req;

void *arg;

{

struct scsipi_adapter *adapt = chan->chan_adapter;

struct scsipi_periph *periph;

struct scsipi_xfer *sc_xfer;

struct wdc_softc *wdc = (void *)adapt->adapt_dev;

struct wdc_xfer *xfer;

struct atac_softc *atac = &wdc->sc_atac;

struct ata_xfer *xfer;

int channel = chan->chan_channel;

int drive, s;

Line 335 wdc_atapi_scsipi_request(chan, req, arg)

Line 350 wdc_atapi_scsipi_request(chan, req, arg)

periph = sc_xfer->xs_periph;

drive = periph->periph_target;

WDCDEBUG_PRINT(("wdc_atapi_scsipi_request %s:%d:%d\n",

ATADEBUG_PRINT(("wdc_atapi_scsipi_request %s:%d:%d\n",

wdc->sc_dev.dv_xname, channel, drive), DEBUG_XFERS);

atac->atac_dev.dv_xname, channel, drive), DEBUG_XFERS);

if ((wdc->sc_dev.dv_flags & DVF_ACTIVE) == 0) {

if ((atac->atac_dev.dv_flags & DVF_ACTIVE) == 0) {

sc_xfer->error = XS_DRIVER_STUFFUP;

scsipi_done(sc_xfer);

return;

}

xfer = wdc_get_xfer(WDC_NOSLEEP);

xfer = ata_get_xfer(ATAXF_NOSLEEP);

if (xfer == NULL) {

sc_xfer->error = XS_RESOURCE_SHORTAGE;

scsipi_done(sc_xfer);

Line 352 wdc_atapi_scsipi_request(chan, req, arg)

Line 367 wdc_atapi_scsipi_request(chan, req, arg)

if (sc_xfer->xs_control & XS_CTL_POLL)

xfer->c_flags |= C_POLL;

xfer->drive = drive;

if ((atac->atac_channels[channel]->ch_drive[drive].drive_flags &

(DRIVE_DMA | DRIVE_UDMA)) && sc_xfer->datalen > 0)

xfer->c_flags |= C_DMA;

xfer->c_drive = drive;

xfer->c_flags |= C_ATAPI;

if (sc_xfer->cmd->opcode == GPCMD_REPORT_KEY ||

sc_xfer->cmd->opcode == GPCMD_SEND_KEY ||

Line 361 wdc_atapi_scsipi_request(chan, req, arg)

Line 379 wdc_atapi_scsipi_request(chan, req, arg)

* DVD authentication commands must always be done in

* PIO mode.

xfer->c_flags |= C_FORCEPIO;

xfer->c_flags &= ~C_DMA;

}

* DMA can't deal with transfers which are not a multiple of

Line 372 wdc_atapi_scsipi_request(chan, req, arg)

Line 390 wdc_atapi_scsipi_request(chan, req, arg)

* 4 bytes.

if (sc_xfer->datalen < 4 || (sc_xfer->datalen & 0x01))

xfer->c_flags |= C_FORCEPIO;

xfer->c_flags &= ~C_DMA;

xfer->cmd = sc_xfer;

xfer->c_cmd = sc_xfer;

xfer->databuf = sc_xfer->data;

xfer->c_databuf = sc_xfer->data;

xfer->c_bcount = sc_xfer->datalen;

xfer->c_start = wdc_atapi_start;

xfer->c_intr = wdc_atapi_intr;

xfer->c_kill_xfer = wdc_atapi_kill_xfer;

xfer->c_dscpoll = 0;

s = splbio();

wdc_exec_xfer(wdc->channels[channel], xfer);

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)

Line 398 wdc_atapi_scsipi_request(chan, req, arg)

Line 416 wdc_atapi_scsipi_request(chan, req, arg)

}

void

static void

wdc_atapi_start(chp, xfer)

wdc_atapi_start(struct ata_channel *chp, struct ata_xfer *xfer)

struct channel_softc *chp;

struct wdc_xfer *xfer;

{

struct scsipi_xfer *sc_xfer = xfer->cmd;

struct atac_softc *atac = chp->ch_atac;

struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive];

struct wdc_softc *wdc = CHAN_TO_WDC(chp);

struct wdc_regs *wdr = &wdc->regs[chp->ch_channel];

struct scsipi_xfer *sc_xfer = xfer->c_cmd;

struct ata_drive_datas *drvp = &chp->ch_drive[xfer->c_drive];

int wait_flags = (sc_xfer->xs_control & XS_CTL_POLL) ? AT_POLL : 0;

const char *errstring;

WDCDEBUG_PRINT(("wdc_atapi_start %s:%d:%d, scsi flags 0x%x \n",

ATADEBUG_PRINT(("wdc_atapi_start %s:%d:%d, scsi flags 0x%x \n",

chp->wdc->sc_dev.dv_xname, chp->channel, drvp->drive,

atac->atac_dev.dv_xname, chp->ch_channel, drvp->drive,

sc_xfer->xs_control), DEBUG_XFERS);

/* Adjust C_DMA, it may have changed if we are requesting sense */

if ((xfer->c_flags & C_DMA) && (drvp->n_xfers <= NXFER))

if ((drvp->drive_flags & (DRIVE_DMA | DRIVE_UDMA)) &&

drvp->n_xfers++;

sc_xfer->datalen > 0 && !(xfer->c_flags & C_FORCEPIO)) {

/* Do control operations specially. */

if (drvp->n_xfers <= NXFER)

if (__predict_false(drvp->state < READY)) {

drvp->n_xfers++;

/* If it's not a polled command, we need the kernel thread */

xfer->c_flags |= C_DMA;

if ((sc_xfer->xs_control & XS_CTL_POLL) == 0 &&

} else {

(chp->ch_flags & ATACH_TH_RUN) == 0) {

xfer->c_flags &= ~C_DMA;

chp->ch_queue->queue_freeze++;

wakeup(&chp->ch_thread);

return;

}

* disable interrupts, all commands here should be quick

* enouth to be able to poll, and we don't go here that often

bus_space_write_1(wdr->ctl_iot, wdr->ctl_ioh, wd_aux_ctlr,

WDCTL_4BIT | WDCTL_IDS);

if (wdc->select)

wdc->select(chp, xfer->c_drive);

bus_space_write_1(wdr->cmd_iot, wdr->cmd_iohs[wd_sdh], 0,

WDSD_IBM | (xfer->c_drive << 4));

/* Don't try to set mode if controller can't be adjusted */

if (atac->atac_set_modes == NULL)

goto ready;

/* Also don't try if the drive didn't report its mode */

if ((drvp->drive_flags & DRIVE_MODE) == 0)

goto ready;

errstring = "unbusy";

if (wdc_wait_for_unbusy(chp, ATAPI_DELAY, wait_flags))

goto timeout;

wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0,

0x08 | drvp->PIO_mode, WDSF_SET_MODE);

errstring = "piomode";

if (wdc_wait_for_unbusy(chp, ATAPI_MODE_DELAY, wait_flags))

goto timeout;

if (chp->ch_status & WDCS_ERR) {

if (chp->ch_error == WDCE_ABRT) {

* Some ATAPI drives reject PIO settings.

* Fall back to PIO mode 3 since that's the

* minimum for ATAPI.

printf("%s:%d:%d: PIO mode %d rejected, "

"falling back to PIO mode 3\n",

atac->atac_dev.dv_xname,

chp->ch_channel, xfer->c_drive,

drvp->PIO_mode);

if (drvp->PIO_mode > 3)

drvp->PIO_mode = 3;

} else

goto error;

}

if (drvp->drive_flags & DRIVE_UDMA) {

wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0,

0x40 | drvp->UDMA_mode, WDSF_SET_MODE);

} else if (drvp->drive_flags & DRIVE_DMA) {

wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0,

0x20 | drvp->DMA_mode, WDSF_SET_MODE);

} else {

goto ready;

}

errstring = "dmamode";

if (wdc_wait_for_unbusy(chp, ATAPI_MODE_DELAY, wait_flags))

goto timeout;

if (chp->ch_status & WDCS_ERR) {

if (chp->ch_error == WDCE_ABRT) {

if (drvp->drive_flags & DRIVE_UDMA)

goto error;

else {

* The drive rejected our DMA setting.

* Fall back to mode 1.

printf("%s:%d:%d: DMA mode %d rejected, "

"falling back to DMA mode 0\n",

atac->atac_dev.dv_xname,

chp->ch_channel, xfer->c_drive,

drvp->DMA_mode);

if (drvp->DMA_mode > 0)

drvp->DMA_mode = 0;

}

} else

goto error;

}

ready:

drvp->state = READY;

bus_space_write_1(wdr->ctl_iot, wdr->ctl_ioh, wd_aux_ctlr,

WDCTL_4BIT);

delay(10); /* some drives need a little delay here */

}

/* start timeout machinery */

if ((sc_xfer->xs_control & XS_CTL_POLL) == 0)

callout_reset(&chp->ch_callout, mstohz(sc_xfer->timeout),

wdctimeout, chp);

/* Do control operations specially. */

if (drvp->state < READY) {

if (wdc->select)

if (drvp->state != RESET) {

wdc->select(chp, xfer->c_drive);

printf("%s:%d:%d: bad state %d in wdc_atapi_start\n",

bus_space_write_1(wdr->cmd_iot, wdr->cmd_iohs[wd_sdh], 0,

chp->wdc->sc_dev.dv_xname, chp->channel,

WDSD_IBM | (xfer->c_drive << 4));

xfer->drive, drvp->state);

switch (wdc_wait_for_unbusy(chp, ATAPI_DELAY, wait_flags) < 0) {

panic("wdc_atapi_start: bad state");

case WDCWAIT_OK:

}

break;

drvp->state = PIOMODE;

case WDCWAIT_TOUT:

wdc_atapi_ctrl(chp, xfer, 0);

return;

}

bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh,

WDSD_IBM | (xfer->drive << 4));

if (wait_for_unbusy(chp, ATAPI_DELAY) < 0) {

printf("wdc_atapi_start: not ready, st = %02x\n",

chp->ch_status);

sc_xfer->error = XS_TIMEOUT;

wdc_atapi_reset(chp, xfer);

return;

case WDCWAIT_THR:

return;

}

Line 453 wdc_atapi_start(chp, xfer)

Line 551 wdc_atapi_start(chp, xfer)

* data is necessary, multiple data transfer phases will be done.

wdccommand(chp, xfer->drive, ATAPI_PKT_CMD,

wdccommand(chp, xfer->c_drive, ATAPI_PKT_CMD,

xfer->c_bcount <= 0xffff ? xfer->c_bcount : 0xffff,

0, 0, 0,

(xfer->c_flags & C_DMA) ? ATAPI_PKT_CMD_FTRE_DMA : 0);

* If there is no interrupt for CMD input, busy-wait for it (done in

* the interrupt routine. If it is a polled command, call the interrupt

* routine until command is done.

Line 467 wdc_atapi_start(chp, xfer)

Line 565 wdc_atapi_start(chp, xfer)

ATAPI_CFG_IRQ_DRQ || (sc_xfer->xs_control & XS_CTL_POLL)) {

/* Wait for at last 400ns for status bit to be valid */

DELAY(1);

if (chp->ch_flags & WDCF_DMA_WAIT) {

wdc_dmawait(chp, xfer, sc_xfer->timeout);

chp->ch_flags &= ~WDCF_DMA_WAIT;

}

wdc_atapi_intr(chp, xfer, 0);

} else {

chp->ch_flags |= WDCF_IRQ_WAIT;

chp->ch_flags |= ATACH_IRQ_WAIT;

}

if (sc_xfer->xs_control & XS_CTL_POLL) {

if (chp->ch_flags & ATACH_DMA_WAIT) {

wdc_dmawait(chp, xfer, sc_xfer->timeout);

chp->ch_flags &= ~ATACH_DMA_WAIT;

}

while ((sc_xfer->xs_status & XS_STS_DONE) == 0) {

/* Wait for at last 400ns for status bit to be valid */

DELAY(1);

wdc_atapi_intr(chp, xfer, 0);

}

return;

timeout:

printf("%s:%d:%d: %s timed out\n",

atac->atac_dev.dv_xname, chp->ch_channel, xfer->c_drive,

errstring);

sc_xfer->error = XS_TIMEOUT;

bus_space_write_1(wdr->ctl_iot, wdr->ctl_ioh, wd_aux_ctlr, WDCTL_4BIT);

delay(10); /* some drives need a little delay here */

wdc_atapi_reset(chp, xfer);

return;

error:

printf("%s:%d:%d: %s ",

atac->atac_dev.dv_xname, chp->ch_channel, xfer->c_drive,

errstring);

printf("error (0x%x)\n", chp->ch_error);

sc_xfer->error = XS_SHORTSENSE;

sc_xfer->sense.atapi_sense = chp->ch_error;

bus_space_write_1(wdr->ctl_iot, wdr->ctl_ioh, wd_aux_ctlr, WDCTL_4BIT);

delay(10); /* some drives need a little delay here */

wdc_atapi_reset(chp, xfer);

return;

}

int

static int

wdc_atapi_intr(chp, xfer, irq)

wdc_atapi_intr(struct ata_channel *chp, struct ata_xfer *xfer, int irq)

struct channel_softc *chp;

struct wdc_xfer *xfer;

int irq;

{

struct scsipi_xfer *sc_xfer = xfer->cmd;

struct atac_softc *atac = chp->ch_atac;

struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive];

struct wdc_softc *wdc = CHAN_TO_WDC(chp);

struct wdc_regs *wdr = &wdc->regs[chp->ch_channel];

struct scsipi_xfer *sc_xfer = xfer->c_cmd;

struct ata_drive_datas *drvp = &chp->ch_drive[xfer->c_drive];

int len, phase, i, retries=0;

int ire;

int ire, error;

int dma_flags = 0;

void *cmd;

WDCDEBUG_PRINT(("wdc_atapi_intr %s:%d:%d\n",

ATADEBUG_PRINT(("wdc_atapi_intr %s:%d:%d\n",

chp->wdc->sc_dev.dv_xname, chp->channel, drvp->drive), DEBUG_INTR);

atac->atac_dev.dv_xname, chp->ch_channel, drvp->drive),

DEBUG_INTR);

/* Is it not a transfer, but a control operation? */

if (drvp->state < READY) {

printf("%s:%d:%d: bad state %d in wdc_atapi_intr\n",

chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive,

atac->atac_dev.dv_xname, chp->ch_channel, xfer->c_drive,

drvp->state);

panic("wdc_atapi_intr: bad state");

}

Line 515 wdc_atapi_intr(chp, xfer, irq)

Line 635 wdc_atapi_intr(chp, xfer, irq)

sc_xfer->error = XS_TIMEOUT;

wdc_atapi_reset(chp, xfer);

return 1;

}

/* Ack interrupt done in wait_for_unbusy */

/* Ack interrupt done in wdc_wait_for_unbusy */

bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh,

if (wdc->select)

WDSD_IBM | (xfer->drive << 4));

wdc->select(chp, xfer->c_drive);

if (wait_for_unbusy(chp,

bus_space_write_1(wdr->cmd_iot, wdr->cmd_iohs[wd_sdh], 0,

(irq == 0) ? sc_xfer->timeout : 0) != 0) {

WDSD_IBM | (xfer->c_drive << 4));

if (wdc_wait_for_unbusy(chp,

(irq == 0) ? sc_xfer->timeout : 0, AT_POLL) == WDCWAIT_TOUT) {

if (irq && (xfer->c_flags & C_TIMEOU) == 0)

return 0; /* IRQ was not for us */

printf("%s:%d:%d: device timeout, c_bcount=%d, c_skip=%d\n",

chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive,

atac->atac_dev.dv_xname, chp->ch_channel, xfer->c_drive,

xfer->c_bcount, xfer->c_skip);

if (xfer->c_flags & C_DMA) {

ata_dmaerr(drvp);

ata_dmaerr(drvp,

(xfer->c_flags & C_POLL) ? AT_POLL : 0);

}

sc_xfer->error = XS_TIMEOUT;

wdc_atapi_reset(chp, xfer);

return 1;

}

if (chp->wdc->cap & WDC_CAPABILITY_IRQACK)

if (wdc->irqack)

chp->wdc->irqack(chp);

wdc->irqack(chp);

* If we missed an IRQ and were using DMA, flag it as a DMA error

* and reset device.

if ((xfer->c_flags & C_TIMEOU) && (xfer->c_flags & C_DMA)) {

ata_dmaerr(drvp);

ata_dmaerr(drvp, (xfer->c_flags & C_POLL) ? AT_POLL : 0);

sc_xfer->error = XS_RESET;

wdc_atapi_reset(chp, xfer);

return (1);

}

* if the request sense command was aborted, report the short sense

* previously recorded, else continue normal processing

Line 556 wdc_atapi_intr(chp, xfer, irq)

Line 679 wdc_atapi_intr(chp, xfer, irq)

dma_flags = (sc_xfer->xs_control & XS_CTL_DATA_IN)

? WDC_DMA_READ : 0;

again:

len = bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_cyl_lo) +

len = bus_space_read_1(wdr->cmd_iot, wdr->cmd_iohs[wd_cyl_lo], 0) +

256 * bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_cyl_hi);

256 * bus_space_read_1(wdr->cmd_iot, wdr->cmd_iohs[wd_cyl_hi], 0);

ire = bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_ireason);

ire = bus_space_read_1(wdr->cmd_iot, wdr->cmd_iohs[wd_ireason], 0);

phase = (ire & (WDCI_CMD | WDCI_IN)) | (chp->ch_status & WDCS_DRQ);

WDCDEBUG_PRINT(("wdc_atapi_intr: c_bcount %d len %d st 0x%x err 0x%x "

ATADEBUG_PRINT(("wdc_atapi_intr: c_bcount %d len %d st 0x%x err 0x%x "

"ire 0x%x :", xfer->c_bcount,

len, chp->ch_status, chp->ch_error, ire), DEBUG_INTR);

switch (phase) {

case PHASE_CMDOUT:

cmd = sc_xfer->cmd;

WDCDEBUG_PRINT(("PHASE_CMDOUT\n"), DEBUG_INTR);

ATADEBUG_PRINT(("PHASE_CMDOUT\n"), DEBUG_INTR);

/* Init the DMA channel if necessary */

if (xfer->c_flags & C_DMA) {

if ((*chp->wdc->dma_init)(chp->wdc->dma_arg,

error = (*wdc->dma_init)(wdc->dma_arg,

chp->channel, xfer->drive,

chp->ch_channel, xfer->c_drive,

xfer->databuf, xfer->c_bcount, dma_flags) != 0) {

xfer->c_databuf, xfer->c_bcount, dma_flags);

sc_xfer->error = XS_DRIVER_STUFFUP;

if (error) {

break;

if (error == EINVAL) {

* We can't do DMA on this transfer

* for some reason. Fall back to

* PIO.

xfer->c_flags &= ~C_DMA;

error = 0;

} else {

sc_xfer->error = XS_DRIVER_STUFFUP;

break;

}

/* send packet command */

/* Commands are 12 or 16 bytes long. It's 32-bit aligned */

if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) {

wdc->dataout_pio(chp, drvp->drive_flags, cmd, sc_xfer->cmdlen);

if (drvp->drive_flags & DRIVE_CAP32) {

bus_space_write_multi_4(chp->data32iot,

chp->data32ioh, 0,

(u_int32_t *)cmd,

sc_xfer->cmdlen >> 2);

} else {

bus_space_write_multi_2(chp->cmd_iot,

chp->cmd_ioh, wd_data,

(u_int16_t *)cmd,

sc_xfer->cmdlen >> 1);

}

} else {

if (drvp->drive_flags & DRIVE_CAP32) {

bus_space_write_multi_stream_4(chp->data32iot,

chp->data32ioh, 0,

(u_int32_t *)cmd,

sc_xfer->cmdlen >> 2);

} else {

bus_space_write_multi_stream_2(chp->cmd_iot,

chp->cmd_ioh, wd_data,

(u_int16_t *)cmd,

sc_xfer->cmdlen >> 1);

}

/* Start the DMA channel if necessary */

if (xfer->c_flags & C_DMA) {

(*chp->wdc->dma_start)(chp->wdc->dma_arg,

(*wdc->dma_start)(wdc->dma_arg,

chp->channel, xfer->drive);

chp->ch_channel, xfer->c_drive);

chp->ch_flags |= WDCF_DMA_WAIT;

chp->ch_flags |= ATACH_DMA_WAIT;

}

if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) {

chp->ch_flags |= WDCF_IRQ_WAIT;

chp->ch_flags |= ATACH_IRQ_WAIT;

}

return 1;

case PHASE_DATAOUT:

/* write data */

WDCDEBUG_PRINT(("PHASE_DATAOUT\n"), DEBUG_INTR);

ATADEBUG_PRINT(("PHASE_DATAOUT\n"), DEBUG_INTR);

if ((sc_xfer->xs_control & XS_CTL_DATA_OUT) == 0 ||

(xfer->c_flags & C_DMA) != 0) {

printf("wdc_atapi_intr: bad data phase DATAOUT\n");

if (xfer->c_flags & C_DMA) {

ata_dmaerr(drvp);

ata_dmaerr(drvp,

(xfer->c_flags & C_POLL) ? AT_POLL : 0);

}

sc_xfer->error = XS_TIMEOUT;

wdc_atapi_reset(chp, xfer);

Line 632 again:

Line 745 again:

if (xfer->c_bcount < len) {

printf("wdc_atapi_intr: warning: write only "

"%d of %d requested bytes\n", xfer->c_bcount, len);

if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) {

wdc->dataout_pio(chp, drvp->drive_flags,

bus_space_write_multi_2(chp->cmd_iot,

(char *)xfer->c_databuf + xfer->c_skip,

chp->cmd_ioh, wd_data,

xfer->c_bcount);

(u_int16_t *)((char *)xfer->databuf +

xfer->c_skip),

xfer->c_bcount >> 1);

} else {

bus_space_write_multi_stream_2(chp->cmd_iot,

chp->cmd_ioh, wd_data,

(u_int16_t *)((char *)xfer->databuf +

xfer->c_skip),

xfer->c_bcount >> 1);

}

for (i = xfer->c_bcount; i < len; i += 2)

bus_space_write_2(chp->cmd_iot, chp->cmd_ioh,

bus_space_write_2(wdr->cmd_iot,

wd_data, 0);

wdr->cmd_iohs[wd_data], 0, 0);

xfer->c_skip += xfer->c_bcount;

xfer->c_bcount = 0;

} else {

if (drvp->drive_flags & DRIVE_CAP32) {

wdc->dataout_pio(chp, drvp->drive_flags,

if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM))

(char *)xfer->c_databuf + xfer->c_skip, len);

bus_space_write_multi_4(chp->data32iot,

xfer->c_skip += len;

chp->data32ioh, 0,

xfer->c_bcount -= len;

(u_int32_t *)((char *)xfer->databuf +

xfer->c_skip),

len >> 2);

else

bus_space_write_multi_stream_4(chp->data32iot,

chp->data32ioh, wd_data,

(u_int32_t *)((char *)xfer->databuf +

xfer->c_skip),

len >> 2);

xfer->c_skip += len & 0xfffffffc;

xfer->c_bcount -= len & 0xfffffffc;

len = len & 0x03;

}

if (len > 0) {

if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM))

bus_space_write_multi_2(chp->cmd_iot,

chp->cmd_ioh, wd_data,

(u_int16_t *)((char *)xfer->databuf +

xfer->c_skip),

len >> 1);

else

bus_space_write_multi_stream_2(chp->cmd_iot,

chp->cmd_ioh, wd_data,

(u_int16_t *)((char *)xfer->databuf +

xfer->c_skip),

len >> 1);

xfer->c_skip += len;

xfer->c_bcount -= len;

}

if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) {

chp->ch_flags |= WDCF_IRQ_WAIT;

chp->ch_flags |= ATACH_IRQ_WAIT;

}

return 1;

case PHASE_DATAIN:

/* Read data */

WDCDEBUG_PRINT(("PHASE_DATAIN\n"), DEBUG_INTR);

ATADEBUG_PRINT(("PHASE_DATAIN\n"), DEBUG_INTR);

if ((sc_xfer->xs_control & XS_CTL_DATA_IN) == 0 ||

(xfer->c_flags & C_DMA) != 0) {

printf("wdc_atapi_intr: bad data phase DATAIN\n");

if (xfer->c_flags & C_DMA) {

ata_dmaerr(drvp);

ata_dmaerr(drvp,

(xfer->c_flags & C_POLL) ? AT_POLL : 0);

}

sc_xfer->error = XS_TIMEOUT;

wdc_atapi_reset(chp, xfer);

Line 707 again:

Line 781 again:

if (xfer->c_bcount < len) {

printf("wdc_atapi_intr: warning: reading only "

"%d of %d bytes\n", xfer->c_bcount, len);

if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) {

wdc->datain_pio(chp, drvp->drive_flags,

bus_space_read_multi_2(chp->cmd_iot,

(char *)xfer->c_databuf + xfer->c_skip,

chp->cmd_ioh, wd_data,

xfer->c_bcount);

(u_int16_t *)((char *)xfer->databuf +

xfer->c_skip),

xfer->c_bcount >> 1);

} else {

bus_space_read_multi_stream_2(chp->cmd_iot,

chp->cmd_ioh, wd_data,

(u_int16_t *)((char *)xfer->databuf +

xfer->c_skip),

xfer->c_bcount >> 1);

}

wdcbit_bucket(chp, len - xfer->c_bcount);

xfer->c_skip += xfer->c_bcount;

xfer->c_bcount = 0;

} else {

if (drvp->drive_flags & DRIVE_CAP32) {

wdc->datain_pio(chp, drvp->drive_flags,

if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM))

(char *)xfer->c_databuf + xfer->c_skip, len);

bus_space_read_multi_4(chp->data32iot,

xfer->c_skip += len;

chp->data32ioh, 0,

xfer->c_bcount -=len;

(u_int32_t *)((char *)xfer->databuf +

xfer->c_skip),

len >> 2);

else

bus_space_read_multi_stream_4(chp->data32iot,

chp->data32ioh, wd_data,

(u_int32_t *)((char *)xfer->databuf +

xfer->c_skip),

len >> 2);

xfer->c_skip += len & 0xfffffffc;

xfer->c_bcount -= len & 0xfffffffc;

len = len & 0x03;

}

if (len > 0) {

if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM))

bus_space_read_multi_2(chp->cmd_iot,

chp->cmd_ioh, wd_data,

(u_int16_t *)((char *)xfer->databuf +

xfer->c_skip),

len >> 1);

else

bus_space_read_multi_stream_2(chp->cmd_iot,

chp->cmd_ioh, wd_data,

(u_int16_t *)((char *)xfer->databuf +

xfer->c_skip),

len >> 1);

xfer->c_skip += len;

xfer->c_bcount -=len;

}

if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) {

chp->ch_flags |= WDCF_IRQ_WAIT;

chp->ch_flags |= ATACH_IRQ_WAIT;

}

return 1;

case PHASE_ABORTED:

case PHASE_COMPLETED:

WDCDEBUG_PRINT(("PHASE_COMPLETED\n"), DEBUG_INTR);

ATADEBUG_PRINT(("PHASE_COMPLETED\n"), DEBUG_INTR);

if (xfer->c_flags & C_DMA) {

xfer->c_bcount -= sc_xfer->datalen;

}

Line 777 again:

Line 811 again:

default:

if (++retries<500) {

DELAY(100);

chp->ch_status = bus_space_read_1(chp->cmd_iot,

chp->ch_status = bus_space_read_1(wdr->cmd_iot,

chp->cmd_ioh, wd_status);

wdr->cmd_iohs[wd_status], 0);

chp->ch_error = bus_space_read_1(chp->cmd_iot,

chp->ch_error = bus_space_read_1(wdr->cmd_iot,

chp->cmd_ioh, wd_error);

wdr->cmd_iohs[wd_error], 0);

goto again;

}

printf("wdc_atapi_intr: unknown phase 0x%x\n", phase);

Line 789 again:

Line 823 again:

sc_xfer->sense.atapi_sense = chp->ch_error;

} else {

if (xfer->c_flags & C_DMA) {

ata_dmaerr(drvp);

ata_dmaerr(drvp,

(xfer->c_flags & C_POLL) ? AT_POLL : 0);

}

sc_xfer->error = XS_RESET;

wdc_atapi_reset(chp, xfer);

return (1);

}

WDCDEBUG_PRINT(("wdc_atapi_intr: wdc_atapi_done() (end), error 0x%x "

ATADEBUG_PRINT(("wdc_atapi_intr: wdc_atapi_done() (end), error 0x%x "

"sense 0x%x\n", sc_xfer->error, sc_xfer->sense.atapi_sense),

DEBUG_INTR);

wdc_atapi_done(chp, xfer);

return (1);

}

int

static void

wdc_atapi_ctrl(chp, xfer, irq)

wdc_atapi_phase_complete(struct ata_xfer *xfer)

struct channel_softc *chp;

struct wdc_xfer *xfer;

int irq;

{

struct scsipi_xfer *sc_xfer = xfer->cmd;

struct ata_channel *chp = xfer->c_chp;

struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive];

struct atac_softc *atac = chp->ch_atac;

char *errstring = NULL;

struct wdc_softc *wdc = CHAN_TO_WDC(chp);

int delay = (irq == 0) ? ATAPI_DELAY : 0;

struct scsipi_xfer *sc_xfer = xfer->c_cmd;

struct ata_drive_datas *drvp = &chp->ch_drive[xfer->c_drive];

/* Ack interrupt done in wait_for_unbusy */

again:

WDCDEBUG_PRINT(("wdc_atapi_ctrl %s:%d:%d state %d\n",

chp->wdc->sc_dev.dv_xname, chp->channel, drvp->drive, drvp->state),

DEBUG_INTR | DEBUG_FUNCS);

bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh,

WDSD_IBM | (xfer->drive << 4));

switch (drvp->state) {

case PIOMODE:

/* Don't try to set mode if controller can't be adjusted */

if ((chp->wdc->cap & WDC_CAPABILITY_MODE) == 0)

goto ready;

/* Also don't try if the drive didn't report its mode */

if ((drvp->drive_flags & DRIVE_MODE) == 0)

goto ready;

wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0,

0x08 | drvp->PIO_mode, WDSF_SET_MODE);

drvp->state = PIOMODE_WAIT;

break;

case PIOMODE_WAIT:

errstring = "piomode";

if (wait_for_unbusy(chp, delay))

goto timeout;

if (chp->wdc->cap & WDC_CAPABILITY_IRQACK)

chp->wdc->irqack(chp);

if (chp->ch_status & WDCS_ERR) {

if (chp->ch_error == WDCE_ABRT) {

* some ATAPI drives rejects pio settings.

* all we can do here is fall back to PIO 0

drvp->drive_flags &= ~DRIVE_MODE;

drvp->drive_flags &= ~(DRIVE_DMA|DRIVE_UDMA);

drvp->PIO_mode = 0;

drvp->DMA_mode = 0;

printf("%s:%d:%d: pio setting rejected, "

"falling back to PIO mode 0\n",

chp->wdc->sc_dev.dv_xname,

chp->channel, xfer->drive);

chp->wdc->set_modes(chp);

goto ready;

}

goto error;

}

/* fall through */

case DMAMODE:

if (drvp->drive_flags & DRIVE_UDMA) {

wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0,

0x40 | drvp->UDMA_mode, WDSF_SET_MODE);

} else if (drvp->drive_flags & DRIVE_DMA) {

wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0,

0x20 | drvp->DMA_mode, WDSF_SET_MODE);

} else {

goto ready;

}

drvp->state = DMAMODE_WAIT;

break;

case DMAMODE_WAIT:

errstring = "dmamode";

if (wait_for_unbusy(chp, delay))

goto timeout;

if (chp->wdc->cap & WDC_CAPABILITY_IRQACK)

chp->wdc->irqack(chp);

if (chp->ch_status & WDCS_ERR)

goto error;

/* fall through */

case READY:

ready:

drvp->state = READY;

xfer->c_intr = wdc_atapi_intr;

callout_stop(&chp->ch_callout);

wdc_atapi_start(chp, xfer);

return 1;

}

if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) {

chp->ch_flags |= WDCF_IRQ_WAIT;

xfer->c_intr = wdc_atapi_ctrl;

} else {

goto again;

}

return 1;

timeout:

if (irq && (xfer->c_flags & C_TIMEOU) == 0) {

return 0; /* IRQ was not for us */

}

printf("%s:%d:%d: %s timed out\n",

chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, errstring);

sc_xfer->error = XS_TIMEOUT;

wdc_atapi_reset(chp, xfer);

return 1;

error:

printf("%s:%d:%d: %s ",

chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive,

errstring);

printf("error (0x%x)\n", chp->ch_error);

sc_xfer->error = XS_SHORTSENSE;

sc_xfer->sense.atapi_sense = chp->ch_error;

wdc_atapi_reset(chp, xfer);

return 1;

}

void

wdc_atapi_phase_complete(xfer)

struct wdc_xfer *xfer;

{

struct channel_softc *chp = xfer->chp;

struct scsipi_xfer *sc_xfer = xfer->cmd;

struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive];

/* wait for DSC if needed */

if (drvp->drive_flags & DRIVE_ATAPIST) {

WDCDEBUG_PRINT(("wdc_atapi_phase_complete(%s:%d:%d) "

ATADEBUG_PRINT(("wdc_atapi_phase_complete(%s:%d:%d) "

"polldsc %d\n", chp->wdc->sc_dev.dv_xname, chp->channel,

"polldsc %d\n", atac->atac_dev.dv_xname, chp->ch_channel,

xfer->drive, xfer->c_dscpoll), DEBUG_XFERS);

xfer->c_drive, xfer->c_dscpoll), DEBUG_XFERS);

if (cold) {

#if 1

if (wdcwait(chp, WDCS_DSC, WDCS_DSC,

if (cold)

sc_xfer->timeout)) {

panic("wdc_atapi_phase_complete: cold");

printf("%s:%d:%d: wait_for_dsc failed\n",

#endif

chp->wdc->sc_dev.dv_xname, chp->channel,

if (wdcwait(chp, WDCS_DSC, WDCS_DSC, 10,

xfer->drive);

AT_POLL) == WDCWAIT_TOUT) {

/* 10ms not enough, try again in 1 tick */

if (xfer->c_dscpoll++ >

mstohz(sc_xfer->timeout)) {

printf("%s:%d:%d: wait_for_dsc "

"failed\n",

atac->atac_dev.dv_xname,

chp->ch_channel, xfer->c_drive);

sc_xfer->error = XS_TIMEOUT;

wdc_atapi_reset(chp, xfer);

return;

}

} else

} else {

if (wdcwait(chp, WDCS_DSC, WDCS_DSC, 10)) {

/* 10ms not enough, try again in 1 tick */

if (xfer->c_dscpoll++ >

mstohz(sc_xfer->timeout)) {

printf("%s:%d:%d: wait_for_dsc "

"failed\n",

chp->wdc->sc_dev.dv_xname,

chp->channel, xfer->drive);

sc_xfer->error = XS_TIMEOUT;

wdc_atapi_reset(chp, xfer);

return;

}

callout_reset(&chp->ch_callout, 1,

wdc_atapi_polldsc, xfer);

return;

}

* Some drive occasionally set WDCS_ERR with

* "ATA illegal length indication" in the error

* register. If we read some data the sense is valid

* anyway, so don't report the error.

Line 978 wdc_atapi_phase_complete(xfer)

Line 892 wdc_atapi_phase_complete(xfer)

/* ask scsipi to send a REQUEST_SENSE */

sc_xfer->error = XS_BUSY;

sc_xfer->status = SCSI_CHECK;

} else if (chp->wdc->dma_status &

} else if (wdc->dma_status &

(WDC_DMAST_NOIRQ | WDC_DMAST_ERR)) {

ata_dmaerr(drvp);

ata_dmaerr(drvp,

(xfer->c_flags & C_POLL) ? AT_POLL : 0);

sc_xfer->error = XS_RESET;

wdc_atapi_reset(chp, xfer);

return;

}

if (xfer->c_bcount != 0) {

WDCDEBUG_PRINT(("wdc_atapi_intr: bcount value is "

ATADEBUG_PRINT(("wdc_atapi_intr: bcount value is "

"%d after io\n", xfer->c_bcount), DEBUG_XFERS);

}

#ifdef DIAGNOSTIC

Line 996 wdc_atapi_phase_complete(xfer)

Line 911 wdc_atapi_phase_complete(xfer)

"is %d after io\n", xfer->c_bcount);

}

#endif

WDCDEBUG_PRINT(("wdc_atapi_phase_complete: wdc_atapi_done(), "

ATADEBUG_PRINT(("wdc_atapi_phase_complete: wdc_atapi_done(), "

"error 0x%x sense 0x%x\n", sc_xfer->error,

sc_xfer->sense.atapi_sense), DEBUG_INTR);

wdc_atapi_done(chp, xfer);

}

void

static void

wdc_atapi_done(chp, xfer)

wdc_atapi_done(struct ata_channel *chp, struct ata_xfer *xfer)

struct channel_softc *chp;

struct wdc_xfer *xfer;

{

struct scsipi_xfer *sc_xfer = xfer->cmd;

struct atac_softc *atac = chp->ch_atac;

struct scsipi_xfer *sc_xfer = xfer->c_cmd;

int drive = xfer->c_drive;

WDCDEBUG_PRINT(("wdc_atapi_done %s:%d:%d: flags 0x%x\n",

ATADEBUG_PRINT(("wdc_atapi_done %s:%d:%d: flags 0x%x\n",

chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive,

atac->atac_dev.dv_xname, chp->ch_channel, xfer->c_drive,

(u_int)xfer->c_flags), DEBUG_XFERS);

callout_stop(&chp->ch_callout);

/* remove this command from xfer queue */

/* mark controller inactive and free the command */

wdc_free_xfer(chp, xfer);

chp->ch_queue->active_xfer = NULL;

ata_free_xfer(chp, xfer);

WDCDEBUG_PRINT(("wdc_atapi_done: scsipi_done\n"), DEBUG_XFERS);

if (chp->ch_drive[drive].drive_flags & DRIVE_WAITDRAIN) {

sc_xfer->error = XS_DRIVER_STUFFUP;

chp->ch_drive[drive].drive_flags &= ~DRIVE_WAITDRAIN;

wakeup(&chp->ch_queue->active_xfer);

}

ATADEBUG_PRINT(("wdc_atapi_done: scsipi_done\n"), DEBUG_XFERS);

scsipi_done(sc_xfer);

WDCDEBUG_PRINT(("wdcstart from wdc_atapi_done, flags 0x%x\n",

ATADEBUG_PRINT(("atastart from wdc_atapi_done, flags 0x%x\n",

chp->ch_flags), DEBUG_XFERS);

wdcstart(chp);

atastart(chp);

}

void

static void

wdc_atapi_reset(chp, xfer)

wdc_atapi_reset(struct ata_channel *chp, struct ata_xfer *xfer)

struct channel_softc *chp;

struct wdc_xfer *xfer;

{

struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive];

struct atac_softc *atac = chp->ch_atac;

struct scsipi_xfer *sc_xfer = xfer->cmd;

struct ata_drive_datas *drvp = &chp->ch_drive[xfer->c_drive];

struct scsipi_xfer *sc_xfer = xfer->c_cmd;

wdccommandshort(chp, xfer->drive, ATAPI_SOFT_RESET);

wdccommandshort(chp, xfer->c_drive, ATAPI_SOFT_RESET);

drvp->state = 0;

if (wait_for_unbusy(chp, WDC_RESET_WAIT) != 0) {

if (wdc_wait_for_unbusy(chp, WDC_RESET_WAIT, AT_POLL) != 0) {

printf("%s:%d:%d: reset failed\n",

chp->wdc->sc_dev.dv_xname, chp->channel,

atac->atac_dev.dv_xname, chp->ch_channel,

xfer->drive);

xfer->c_drive);

sc_xfer->error = XS_SELTIMEOUT;

}

wdc_atapi_done(chp, xfer);

return;

}

void

static void

wdc_atapi_polldsc(arg)

wdc_atapi_polldsc(void *arg)

void *arg;

{

wdc_atapi_phase_complete(arg);

}

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