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freebsd-skq/sys/dev/ata/atapi-all.c
sos 51df811367 Support DMA on ATAPI devices (finally). 
This makes my system use only ~5% CPU on reading 4.5Mbyte/sec
from a CDROM, which before was limitted to 1.8Mbyte/sec due
to 100% CPU load..
1999-08-10 21:59:58 +00:00

680 lines
21 KiB
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/*-
* Copyright (c) 1998,1999 Søren Schmidt
* All rights reserved.
*
* 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,
* without modification, immediately at the beginning of the file.
* 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.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software 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.
*
* $Id: atapi-all.c,v 1.10 1999/06/25 09:03:01 sos Exp $
*/
#include "ata.h"
#include "atapicd.h"
#include "atapist.h"
#include "atapifd.h"
#include "opt_devfs.h"
#if NATA > 0
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/buf.h>
#include <sys/device.h>
#include <sys/malloc.h>
#include <sys/devicestat.h>
#include <machine/clock.h>
#include <pci/pcivar.h>
#include <dev/ata/ata-all.h>
#include <dev/ata/atapi-all.h>
/* prototypes */
static void atapi_attach(void *);
static int32_t atapi_getparam(struct atapi_softc *);
static int8_t *atapi_type(int32_t);
static int8_t *atapi_cmd2str(u_int8_t);
static int8_t * atapi_skey2str(u_int8_t);
static int32_t atapi_wait(struct atapi_softc *, u_int8_t);
static void atapi_init(void);
/* extern references */
int32_t acdattach(struct atapi_softc *);
int32_t afdattach(struct atapi_softc *);
int32_t astattach(struct atapi_softc *);
static struct intr_config_hook *atapi_attach_hook;
static __inline int
apiomode(struct atapi_params *ap)
{
if ((ap->atavalid & 2) == 2) {
if ((ap->apiomodes & 2) == 2) return 4;
if ((ap->apiomodes & 1) == 1) return 3;
}
return -1;
}
static __inline int
wdmamode(struct atapi_params *ap)
{
if ((ap->atavalid & 2) == 2) {
if ((ap->wdmamodes & 4) == 4) return 2;
if ((ap->wdmamodes & 2) == 2) return 1;
if ((ap->wdmamodes & 1) == 1) return 0;
}
return -1;
}
static __inline int
udmamode(struct atapi_params *ap)
{
if ((ap->atavalid & 4) == 4) {
if ((ap->udmamodes & 4) == 4) return 2;
if ((ap->udmamodes & 2) == 2) return 1;
if ((ap->udmamodes & 1) == 1) return 0;
}
return -1;
}
static void
atapi_attach(void *notused)
{
struct atapi_softc *atp;
int32_t ctlr, dev;
int8_t model_buf[40+1];
int8_t revision_buf[8+1];
/* now, run through atadevices and look for ATAPI devices */
for (ctlr=0; ctlr<MAXATA; ctlr++) {
if (!atadevices[ctlr]) continue;
for (dev=0; dev<2; dev++) {
if (atadevices[ctlr]->devices &
(dev ? ATA_ATAPI_SLAVE : ATA_ATAPI_MASTER)) {
if (!(atp = malloc(sizeof(struct atapi_softc),
M_DEVBUF, M_NOWAIT))) {
printf("atapi: failed to allocate driver storage\n");
continue;
}
bzero(atp, sizeof(struct atapi_softc));
atp->controller = atadevices[ctlr];
atp->unit = (dev == 0) ? ATA_MASTER : ATA_SLAVE;
if (atapi_getparam(atp)) {
free(atp, M_DEVBUF);
continue;
}
printf("atapi: piomode=%d, dmamode=%d, udmamode=%d\n",
apiomode(atp->atapi_parm),
wdmamode(atp->atapi_parm),
udmamode(atp->atapi_parm));
if (!(atp->atapi_parm->drqtype == ATAPI_DRQT_INTR) &&
!ata_dmainit(atp->controller, atp->unit,
apiomode(atp->atapi_parm),
wdmamode(atp->atapi_parm),
udmamode(atp->atapi_parm)))
atp->flags |= ATAPI_F_DMA_ENABLED;
printf("atapi: %s transfer mode set\n",
(atp->flags & ATAPI_F_DMA_ENABLED) ? "DMA" :"PIO");
switch (atp->atapi_parm->device_type) {
#if NATAPICD > 0
case ATAPI_TYPE_CDROM:
if (acdattach(atp))
goto notfound;
break;
#endif
#if NATAPIFD > 0
case ATAPI_TYPE_DIRECT:
if (afdattach(atp))
goto notfound;
break;
#endif
#if NATAPIST > 0
case ATAPI_TYPE_TAPE:
if (astattach(atp))
goto notfound;
break;
#endif
notfound:
default:
bpack(atp->atapi_parm->model, model_buf, sizeof(model_buf));
bpack(atp->atapi_parm->revision, revision_buf,
sizeof(revision_buf));
printf("atapi: <%s/%s> %s device at ata%d as %s "
"- NO DRIVER!\n",
model_buf, revision_buf,
atapi_type(atp->atapi_parm->device_type),
ctlr,
(dev) ? "slave" : "master ");
free(atp, M_DEVBUF);
}
}
}
}
config_intrhook_disestablish(atapi_attach_hook);
}
static int32_t
atapi_getparam(struct atapi_softc *atp)
{
struct atapi_params *atapi_parm;
int8_t buffer[DEV_BSIZE];
/* select drive */
outb(atp->controller->ioaddr + ATA_DRIVE, ATA_D_IBM | atp->unit);
DELAY(1);
ata_command(atp->controller, atp->unit, ATA_C_ATAPI_IDENTIFY,
0, 0, 0, 0, 0, ATA_WAIT_INTR);
if (atapi_wait(atp, ATA_S_DRQ))
return -1;
insw(atp->controller->ioaddr + ATA_DATA, buffer,
sizeof(buffer)/sizeof(int16_t));
if (atapi_wait(atp, 0))
return -1;
if (!(atapi_parm = malloc(sizeof(struct atapi_params), M_DEVBUF, M_NOWAIT)))
return -1;
bcopy(buffer, atapi_parm, sizeof(struct atapi_params));
if (!((atapi_parm->model[0] == 'N' && atapi_parm->model[1] == 'E') ||
(atapi_parm->model[0] == 'F' && atapi_parm->model[1] == 'X')))
bswap(atapi_parm->model, sizeof(atapi_parm->model));
btrim(atapi_parm->model, sizeof(atapi_parm->model));
bswap(atapi_parm->revision, sizeof(atapi_parm->revision));
btrim(atapi_parm->revision, sizeof(atapi_parm->revision));
atp->atapi_parm = atapi_parm;
return 0;
}
int32_t
atapi_queue_cmd(struct atapi_softc *atp, int8_t *ccb, void *data,
int32_t count, int32_t flags, int32_t timeout,
atapi_callback_t callback, void *driver, struct buf *bp)
{
struct atapi_request *request;
int32_t error = 0;
int32_t s;
atp->last_cmd = ccb[0];
if (!(request = malloc(sizeof(struct atapi_request), M_DEVBUF, M_NOWAIT)))
return -1;
bzero(request, sizeof(struct atapi_request));
request->device = atp;
request->data = data;
request->bytecount = count;
request->donecount = 0;
request->flags = flags;
if (callback) {
request->callback = callback;
request->bp = bp;
request->driver = driver;
}
request->ccbsize = (atp->atapi_parm->cmdsize) ? 16 : 12;
bcopy(ccb, request->ccb, request->ccbsize);
s = splbio();
/* link onto controller queue */
if (ccb[0] == ATAPI_REQUEST_SENSE)
TAILQ_INSERT_HEAD(&atp->controller->atapi_queue, request, chain);
else
TAILQ_INSERT_TAIL(&atp->controller->atapi_queue, request, chain);
/* try to start controller */
if (atp->controller->active == ATA_IDLE)
ata_start(atp->controller);
splx(s);
/* wait for command to complete */
if (tsleep((caddr_t)request, PRIBIO, "atprq", timeout*100)) {
if (atp->controller->active != ATA_IDLE)
atp->controller->active = ATA_IDLE;
/* should we reset device here ? */
request->result |= 0xf0;
}
#ifdef ATAPI_DEBUG
printf("atapi: phew, got back from tsleep with %s\n"
(request->result & 0xf0) == 0xf0 ? "timeout" : "wakeup"));
#endif
if (callback) {
(request->callback)(request);
free(request, M_DEVBUF);
return 0;
}
error = request->result;
free(request, M_DEVBUF);
if (ccb[0] == ATAPI_REQUEST_SENSE)
return 0;
else
return atapi_error(atp, error);
}
void
atapi_transfer(struct atapi_request *request)
{
struct atapi_softc *atp;
int32_t timeout;
int8_t reason;
/* get device params */
atp = request->device;
#ifdef ATAPI_DEBUG
printf("atapi: trying to start %s cmd\n", atapi_cmd2str(request->ccb[0]));
#endif
/* if DMA enabled setup DMA hardware */
atp->flags &= ~ATAPI_F_DMA_USED;
if ((request->ccb[0]==ATAPI_READ_BIG || request->ccb[0]==ATAPI_WRITE_BIG) &&
(atp->flags & ATAPI_F_DMA_ENABLED) &&
!ata_dmasetup(atp->controller, atp->unit,
(void *)request->data, request->bytecount,
request->flags & A_READ)) {
atp->flags |= ATAPI_F_DMA_USED;
}
/* start ATAPI operation */
ata_command(atp->controller, atp->unit, ATA_C_PACKET_CMD,
request->bytecount, 0, 0, 0,
(atp->flags & ATAPI_F_DMA_USED) ? ATA_F_DMA : 0,
ATA_IMMEDIATE);
/* command interrupt device ? just return */
if (atp->atapi_parm->drqtype == ATAPI_DRQT_INTR)
return;
/* ready to write ATAPI command */
timeout = 5000; /* might be less for fast devices */
while (timeout--) {
reason = inb(atp->controller->ioaddr + ATA_IREASON);
atp->controller->status = inb(atp->controller->ioaddr + ATA_STATUS);
if (((reason & (ATA_I_CMD | ATA_I_IN)) |
(atp->controller->status&(ATA_S_DRQ|ATA_S_BSY))) == ATAPI_P_CMDOUT)
break;
DELAY(20);
}
if (timeout <= 0) {
atp->controller->error = inb(atp->controller->ioaddr + ATA_ERROR);
printf("atapi_transfer: bad command phase\n");
/* now what ?? done & again ?? SOS */
}
/* this seems to be needed for some (slow) devices */
DELAY(10);
if (atp->flags & ATAPI_F_DMA_USED)
ata_dmastart(atp->controller, atp->unit);
/* send actual command */
outsw(atp->controller->ioaddr + ATA_DATA, request->ccb,
request->ccbsize / sizeof(int16_t));
}
int32_t
atapi_interrupt(struct atapi_request *request)
{
struct atapi_softc *atp;
int32_t length, reason, resid, dma_stat = 0;
#ifdef ATAPI_DEBUG
printf("atapi_interrupt: enter\n");
#endif
/* get device params */
atp = request->device;
if (atp->flags & ATAPI_F_DMA_USED)
dma_stat = ata_dmadone(atp->controller, atp->unit);
/* get drive status */
if (atapi_wait(atp, 0) < 0) {
printf("atapi_interrupt: timeout waiting for status");
request->result = inb(atp->controller->ioaddr + ATA_ERROR);
wakeup((caddr_t)request);
return ATA_OP_FINISHED;
}
atp->controller->status = inb(atp->controller->ioaddr + ATA_STATUS);
atp->controller->error = inb(atp->controller->ioaddr + ATA_ERROR);
length = inb(atp->controller->ioaddr + ATA_CYL_LSB);
length |= inb(atp->controller->ioaddr + ATA_CYL_MSB) << 8;
reason = (inb(atp->controller->ioaddr + ATA_IREASON)&(ATA_I_CMD|ATA_I_IN)) |
(atp->controller->status & ATA_S_DRQ);
#ifdef ATAPI_DEBUG
printf("atapi_interrupt: length=%d reason=0x%02x\n", length, reason);
#endif
if (atp->flags & ATAPI_F_DMA_USED) {
if (atp->controller->status & (ATA_S_ERROR | ATA_S_DWF) &&
dma_stat != ATA_BMSTAT_INTERRUPT)
request->result = atp->controller->error;
else {
request->donecount = request->bytecount;
request->bytecount = 0;
request->result = 0;
}
TAILQ_REMOVE(&atp->controller->atapi_queue, request, chain);
atp->flags &= ~ATAPI_F_DMA_USED;
wakeup((caddr_t)request);
return ATA_OP_FINISHED;
}
switch (reason) {
case ATAPI_P_CMDOUT:
/* send ATAPI command */
if (!(atp->controller->status & ATA_S_DRQ))
printf("atapi_interrupt: command interrupt, but no DRQ\n");
else
outsw(atp->controller->ioaddr + ATA_DATA, request->ccb,
request->ccbsize / sizeof(int16_t));
return ATA_OP_CONTINUES;
case ATAPI_P_WRITE:
if (request->flags & A_READ) {
printf("atapi_interrupt: trying to write on read buffer\n");
break;
}
if (request->bytecount < length) {
printf("atapi_interrupt: write data underrun %d/%d\n",
length, request->bytecount);
#if 0
outsw(atp->controller->ioaddr + ATA_DATA,
(void *)((uintptr_t)request->data), length / sizeof(int16_t));
#else
outsl(atp->controller->ioaddr + ATA_DATA,
(void *)((uintptr_t)request->data), length / sizeof(int32_t));
#endif
for (resid=request->bytecount; resid<length; resid+=sizeof(int16_t))
outw(atp->controller->ioaddr + ATA_DATA, 0);
}
else {
outsw(atp->controller->ioaddr + ATA_DATA,
(void *)((uintptr_t)request->data), length / sizeof(int16_t));
}
request->bytecount -= length;
request->donecount += length;
request->data += length;
return ATA_OP_CONTINUES;
case ATAPI_P_READ:
if (!(request->flags & A_READ)) {
printf("atapi_interrupt: trying to read on write buffer\n");
break;
}
if (request->bytecount < length) {
printf("atapi_interrupt: read data overrun %d/%d\n",
length, request->bytecount);
#if 0
insw(atp->controller->ioaddr + ATA_DATA,
(void *)((uintptr_t)request->data), length / sizeof(int16_t));
#else
insl(atp->controller->ioaddr + ATA_DATA,
(void *)((uintptr_t)request->data), length / sizeof(int32_t));
#endif
for (resid=request->bytecount; resid<length; resid+=sizeof(int16_t))
inw(atp->controller->ioaddr + ATA_DATA);
}
else {
insw(atp->controller->ioaddr + ATA_DATA,
(void *)((uintptr_t)request->data), length / sizeof(int16_t));
}
request->bytecount -= length;
request->donecount += length;
request->data += length;
return ATA_OP_CONTINUES;
case ATAPI_P_ABORT:
case ATAPI_P_DONE:
request->result = 0;
if (atp->controller->status & (ATA_S_ERROR | ATA_S_DWF)) {
/* check sense !! SOS */
request->result = atp->controller->error;
break;
}
#ifdef ATAPI_DEBUG
if (request->bytecount > 0) {
printf("atapi_interrupt: %s size problem, %d bytes residue\n",
(request->flags & A_READ) ? "read" : "write",
request->bytecount);
}
#endif
break;
default:
printf("atapi_interrupt: unknown transfer phase %d\n", reason);
}
TAILQ_REMOVE(&atp->controller->atapi_queue, request, chain);
#ifdef ATAPI_DEBUG
printf("atapi_interrupt: error=0x%02x\n", request->result);
#endif
wakeup((caddr_t)request);
return ATA_OP_FINISHED;
}
int32_t
atapi_error(struct atapi_softc *atp, int32_t error)
{
struct atapi_reqsense sense;
int8_t cmd = atp->last_cmd;
int8_t ccb[16] = { ATAPI_REQUEST_SENSE, 0, 0, 0, sizeof(sense),
0, 0, 0 ,0 ,0, 0, 0, 0, 0, 0, 0 };
switch ((error & 0xf0)) {
case ATAPI_SK_RESERVED:
printf("atapi_error: %s - timeout error = %02x\n",
atapi_cmd2str(cmd), error & 0x0f);
return EIO;
case ATAPI_SK_NO_SENSE:
if (error & 0x0f) {
printf("atapi_error: %s - error = %02x\n",
atapi_cmd2str(cmd), error & 0x0f);
return EIO;
}
return 0;
case ATAPI_SK_RECOVERED_ERROR:
printf("atapi_error: %s - recovered error\n", atapi_cmd2str(cmd));
return 0;
case ATAPI_SK_NOT_READY:
if (error & 0x0f)
break;
return EBUSY;
case ATAPI_SK_UNIT_ATTENTION:
return EAGAIN; /* misused */
}
bzero(&sense, sizeof(struct atapi_reqsense));
atapi_queue_cmd(atp, ccb, &sense, sizeof(struct atapi_reqsense),
A_READ, 10, NULL, NULL, NULL);
printf("atapi_error: %s - %s skey=%01x asc=%02x ascq=%02x error=%02x\n",
atapi_cmd2str(cmd), atapi_skey2str(sense.sense_key),
sense.sense_key, sense.asc, sense.ascq, error & 0x0f);
return EIO;
}
void
atapi_dump(int8_t *label, void *data, int32_t len)
{
u_int8_t *p = data;
printf ("atapi: %s %x", label, *p++);
while (--len > 0)
printf ("-%02x", *p++);
printf ("\n");
}
static int8_t *
atapi_type(int32_t type)
{
switch (type) {
case ATAPI_TYPE_CDROM:
return "CDROM";
case ATAPI_TYPE_DIRECT:
return "floppy";
case ATAPI_TYPE_TAPE:
return "tape";
case ATAPI_TYPE_OPTICAL:
return "optical";
default:
return "Unknown";
}
}
static int8_t *
atapi_cmd2str(u_int8_t cmd)
{
switch (cmd) {
case 0x00: return ("TEST_UNIT_READY");
case 0x01: return ("REZERO_UNIT/TAPE_REWIND");
case 0x03: return ("REQUEST_SENSE");
case 0x04: return ("FORMAT_UNIT");
case 0x08: return ("TAPE_READ");
case 0x0a: return ("TAPE_WRITE");
case 0x10: return ("TAPE_WEOF");
case 0x11: return ("TAPE_SPACE");
case 0x19: return ("TAPE_ERASE");
case 0x1a: return ("TAPE_MODE_SENSE");
case 0x1b: return ("START_STOP/TAPE_LOAD");
case 0x1e: return ("PREVENT_ALLOW");
case 0x25: return ("READ_CAPACITY");
case 0x28: return ("READ_BIG");
case 0x2a: return ("WRITE_BIG");
case 0x35: return ("SYNCHRONIZE_CACHE");
case 0x42: return ("READ_SUBCHANNEL");
case 0x43: return ("READ_TOC");
case 0x51: return ("READ_DISC_INFO");
case 0x52: return ("READ_TRACK_INFO");
case 0x53: return ("RESERVE_TRACK");
case 0x54: return ("SEND_OPC_INFO");
case 0x55: return ("MODE_SELECT");
case 0x58: return ("REPAIR_TRACK");
case 0x59: return ("READ_MASTER_CUE");
case 0x5a: return ("MODE_SENSE");
case 0x5b: return ("CLOSE_TRACK/SESSION");
case 0x5c: return ("READ_BUFFER_CAPACITY");
case 0x5d: return ("SEND_CUE_SHEET");
case 0x47: return ("PLAY_MSF");
case 0x4b: return ("PAUSE");
case 0x48: return ("PLAY_TRACK");
case 0xa1: return ("BLANK_CMD");
case 0xa5: return ("PLAY_BIG");
case 0xb4: return ("PLAY_CD");
case 0xbd: return ("MECH_STATUS");
case 0xbe: return ("READ_CD");
default: {
static int8_t buffer[16];
sprintf(buffer, "Unknown CMD (0x%02x)", cmd);
return buffer;
}
}
}
static int8_t *
atapi_skey2str(u_int8_t skey)
{
switch (skey) {
case 0x00: return ("NO SENSE");
case 0x01: return ("RECOVERED ERROR");
case 0x02: return ("NOT READY");
case 0x03: return ("MEDIUM ERROR");
case 0x04: return ("HARDWARE ERROR");
case 0x05: return ("ILLEGAL REQUEST");
case 0x06: return ("UNIT ATTENTION");
case 0x07: return ("DATA PROTECT");
case 0x08: return ("BLANK CHECK");
case 0x09: return ("VENDOR SPECIFIC");
case 0x0a: return ("COPY ABORTED");
case 0x0b: return ("ABORTED COMMAND");
case 0x0c: return ("EQUAL");
case 0x0d: return ("VOLUME OVERFLOW");
case 0x0e: return ("MISCOMPARE");
case 0x0f: return ("RESERVED");
default: return("UNKNOWN");
}
}
static int32_t
atapi_wait(struct atapi_softc *atp, u_int8_t mask)
{
u_int8_t status;
u_int32_t timeout = 0;
while (timeout++ <= 500000) { /* timeout 5 secs */
status = inb(atp->controller->ioaddr + ATA_STATUS);
/* if drive fails status, reselect the drive just to be sure */
if (status == 0xff) {
outb(atp->controller->ioaddr + ATA_DRIVE, ATA_D_IBM | atp->unit);
DELAY(1);
status = inb(atp->controller->ioaddr + ATA_STATUS);
}
if (!(status & ATA_S_BSY) && (status & ATA_S_DRDY))
break;
DELAY (10);
}
if (timeout <= 0)
return -1;
if (!mask)
return (status & ATA_S_ERROR);
/* Wait 50 msec for bits wanted. */
for (timeout=5000; timeout>0; --timeout) {
status = inb(atp->controller->ioaddr + ATA_STATUS);
if ((status & mask) == mask)
return (status & ATA_S_ERROR);
DELAY (10);
}
return -1;
}
static void
atapi_init(void)
{
/* register callback for when interrupts are enabled */
if (!(atapi_attach_hook =
(struct intr_config_hook *)malloc(sizeof(struct intr_config_hook),
M_TEMP, M_NOWAIT))) {
printf("atapi: malloc attach_hook failed\n");
return;
}
bzero(atapi_attach_hook, sizeof(struct intr_config_hook));
atapi_attach_hook->ich_func = atapi_attach;
if (config_intrhook_establish(atapi_attach_hook) != 0) {
printf("atapi: config_intrhook_establish failed\n");
free(atapi_attach_hook, M_TEMP);
}
}
SYSINIT(atconf, SI_SUB_CONFIGURE, SI_ORDER_SECOND, atapi_init, NULL)
#endif /* NATA */
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