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freebsd/sys/dev/ata/ata-dma.c
Søren Schmidt 46a37dbac0 Add support for the Intel 810 chipset (ICH type of chips) 
Prober support for the VIA 82C686, I finally got the right datasheet.

Get rid of atapi_wait, merge it into ata_wait.

Avoid a couple of races by using asleep instead of tsleep.

Always use 16bit transfers on ISA systems.

Clear up the atapi_read/write functions.
2000-01-17 02:04:19 +00:00

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/*-
* Copyright (c) 1998,1999,2000 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.
*
* $FreeBSD$
*/
#include "pci.h"
#include "apm.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/buf.h>
#include <sys/malloc.h>
#include <sys/bus.h>
#include <sys/disk.h>
#include <sys/devicestat.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#if NPCI > 0
#include <pci/pcivar.h>
#endif
#if NAPM > 0
#include <machine/apm_bios.h>
#endif
#include <dev/ata/ata-all.h>
#include <dev/ata/ata-disk.h>
/* prototypes */
static void promise_timing(struct ata_softc *, int32_t, int32_t);
static void hpt366_timing(struct ata_softc *, int32_t, int32_t);
/* misc defines */
#define MIN(a,b) ((a)>(b)?(b):(a))
#ifdef __alpha__
#undef vtophys
#define vtophys(va) alpha_XXX_dmamap((vm_offset_t)va)
#endif
#if NPCI > 0
int32_t
ata_dmainit(struct ata_softc *scp, int32_t device,
int32_t apiomode, int32_t wdmamode, int32_t udmamode)
{
int32_t devno = (scp->unit << 1) + ((device == ATA_MASTER) ? 0 : 1);
int32_t error;
void *dmatab;
if (!scp->bmaddr)
return -1;
/* if simplex controller, only allow DMA on primary channel */
if (scp->unit == 1) {
outb(scp->bmaddr + ATA_BMSTAT_PORT, inb(scp->bmaddr + ATA_BMSTAT_PORT) &
(ATA_BMSTAT_DMA_MASTER | ATA_BMSTAT_DMA_SLAVE));
if (inb(scp->bmaddr + ATA_BMSTAT_PORT) & ATA_BMSTAT_DMA_SIMPLEX) {
printf("ata%d: simplex device, DMA on primary channel only\n",
scp->lun);
return -1;
}
}
if (!(dmatab = malloc(PAGE_SIZE, M_DEVBUF, M_NOWAIT)))
return -1;
if (((uintptr_t)dmatab >> PAGE_SHIFT) ^
(((uintptr_t)dmatab + PAGE_SIZE - 1) >> PAGE_SHIFT)) {
printf("ata%d-%s: dmatab crosses page boundary, no DMA\n",
scp->lun, (device == ATA_MASTER) ? "master" : "slave");
free(dmatab, M_DEVBUF);
return -1;
}
scp->dmatab[(device == ATA_MASTER) ? 0 : 1] = dmatab;
switch (scp->chiptype) {
case 0x71118086: /* Intel PIIX4 */
case 0x71998086: /* Intel PIIX4e */
case 0x24118086: /* Intel ICH */
case 0x24218086: /* Intel ICH0 */
if (udmamode >= 2) {
int32_t mask48, new48;
error = ata_command(scp, device, ATA_C_SETFEATURES, 0, 0, 0,
ATA_UDMA2, ATA_C_F_SETXFER, ATA_WAIT_READY);
if (bootverbose)
printf("ata%d-%s: %s setting up UDMA2 mode on %s chip\n",
scp->lun, (device == ATA_MASTER) ? "master" : "slave",
(error) ? "failed" : "success",
(scp->chiptype == 0x24118086) ? "ICH" :
(scp->chiptype == 0x24218086) ? "ICH0" :"PIIX4");
if (!error) {
mask48 = (1 << devno) + (3 << (16 + (devno << 2)));
new48 = (1 << devno) + (2 << (16 + (devno << 2)));
pci_write_config(scp->dev, 0x48,
(pci_read_config(scp->dev, 0x48, 4) &
~mask48) | new48, 4);
scp->mode[(device == ATA_MASTER) ? 0 : 1] = ATA_UDMA2;
return 0;
}
}
/* FALLTHROUGH */
case 0x70108086: /* Intel PIIX3 */
if (wdmamode >= 2 && apiomode >= 4) {
int32_t mask40, new40, mask44, new44;
/* if SITRE not set doit for both channels */
if (!((pci_read_config(scp->dev, 0x40, 4)>>(scp->unit<<8))&0x4000)){
new40 = pci_read_config(scp->dev, 0x40, 4);
new44 = pci_read_config(scp->dev, 0x44, 4);
if (!(new40 & 0x00004000)) {
new44 &= ~0x0000000f;
new44 |= ((new40&0x00003000)>>10)|((new40&0x00000300)>>8);
}
if (!(new40 & 0x40000000)) {
new44 &= ~0x000000f0;
new44 |= ((new40&0x30000000)>>22)|((new40&0x03000000)>>20);
}
new40 |= 0x40004000;
pci_write_config(scp->dev, 0x40, new40, 4);
pci_write_config(scp->dev, 0x44, new44, 4);
}
error = ata_command(scp, device, ATA_C_SETFEATURES, 0, 0, 0,
ATA_WDMA2, ATA_C_F_SETXFER, ATA_WAIT_READY);
if (bootverbose)
printf("ata%d-%s: %s setting up WDMA2 mode on %s chip\n",
scp->lun, (device == ATA_MASTER) ? "master" : "slave",
(error) ? "failed" : "success",
(scp->chiptype == 0x70108086) ? "PIIX3" :
(scp->chiptype == 0x24118086) ? "ICH" :
(scp->chiptype == 0x24218086) ? "ICH0" :"PIIX4");
if (!error) {
if (device == ATA_MASTER) {
mask40 = 0x0000330f;
new40 = 0x00002307;
mask44 = 0;
new44 = 0;
}
else {
mask40 = 0x000000f0;
new40 = 0x00000070;
mask44 = 0x0000000f;
new44 = 0x0000000b;
}
if (scp->unit) {
mask40 <<= 16;
new40 <<= 16;
mask44 <<= 4;
new44 <<= 4;
}
pci_write_config(scp->dev, 0x40,
(pci_read_config(scp->dev, 0x40, 4) & ~mask40)|
new40, 4);
pci_write_config(scp->dev, 0x44,
(pci_read_config(scp->dev, 0x44, 4) & ~mask44)|
new44, 4);
scp->mode[(device == ATA_MASTER) ? 0 : 1] = ATA_WDMA2;
return 0;
}
}
/* we could set PIO mode timings, but we assume the BIOS did that */
break;
case 0x12308086: /* Intel PIIX */
if (wdmamode >= 2 && apiomode >= 4) {
int32_t word40;
word40 = pci_read_config(scp->dev, 0x40, 4);
word40 >>= scp->unit * 16;
/* Check for timing config usable for DMA on controller */
if (!((word40 & 0x3300) == 0x2300 &&
((word40 >> (device == ATA_MASTER ? 0 : 4)) & 1) == 1))
break;
error = ata_command(scp, device, ATA_C_SETFEATURES, 0, 0, 0,
ATA_WDMA2, ATA_C_F_SETXFER, ATA_WAIT_READY);
if (bootverbose)
printf("ata%d-%s: %s setting up WDMA2 mode on PIIX chip\n",
scp->lun, (device == ATA_MASTER) ? "master" : "slave",
(error) ? "failed" : "success");
if (!error) {
scp->mode[(device == ATA_MASTER) ? 0 : 1] = ATA_WDMA2;
return 0;
}
}
break;
case 0x522910b9: /* AcerLabs Aladdin IV/V */
/* the Aladdin doesn't support ATAPI DMA on both master & slave */
if (scp->devices & ATA_ATAPI_MASTER && scp->devices & ATA_ATAPI_SLAVE) {
printf("ata%d: Aladdin: two atapi devices on this channel, "
"DMA disabled\n", scp->lun);
break;
}
if (udmamode >= 2) {
int32_t word54 = pci_read_config(scp->dev, 0x54, 4);
error = ata_command(scp, device, ATA_C_SETFEATURES, 0, 0, 0,
ATA_UDMA2, ATA_C_F_SETXFER, ATA_WAIT_READY);
if (bootverbose)
printf("ata%d-%s: %s setting up UDMA2 mode on Aladdin chip\n",
scp->lun, (device == ATA_MASTER) ? "master" : "slave",
(error) ? "failed" : "success");
if (!error) {
word54 |= 0x5555;
word54 |= (0x0a << (16 + (scp->unit << 3) + (device << 2)));
pci_write_config(scp->dev, 0x54, word54, 4);
pci_write_config(scp->dev, 0x53,
pci_read_config(scp->dev, 0x53, 1) | 0x03, 1);
scp->flags |= ATA_ATAPI_DMA_RO;
scp->mode[(device == ATA_MASTER) ? 0 : 1] = ATA_UDMA2;
return 0;
}
}
if (wdmamode >= 2 && apiomode >= 4) {
error = ata_command(scp, device, ATA_C_SETFEATURES, 0, 0, 0,
ATA_WDMA2, ATA_C_F_SETXFER, ATA_WAIT_READY);
if (bootverbose)
printf("ata%d-%s: %s setting up WDMA2 mode on Aladdin chip\n",
scp->lun, (device == ATA_MASTER) ? "master" : "slave",
(error) ? "failed" : "success");
if (!error) {
pci_write_config(scp->dev, 0x53,
pci_read_config(scp->dev, 0x53, 1) | 0x03, 1);
scp->flags |= ATA_ATAPI_DMA_RO;
scp->mode[(device == ATA_MASTER) ? 0 : 1] = ATA_WDMA2;
return 0;
}
}
/* we could set PIO mode timings, but we assume the BIOS did that */
break;
case 0x05711106: /* VIA 82C571, 82C586, 82C596 & 82C686 */
case 0x74091022: /* AMD 756 */
/* UDMA modes on 82C686 */
if (ata_find_dev(scp->dev, 0x06861106)) {
if (udmamode >= 4) {
error = ata_command(scp, device, ATA_C_SETFEATURES, 0, 0, 0,
ATA_UDMA4, ATA_C_F_SETXFER, ATA_WAIT_READY);
if (bootverbose)
printf("ata%d-%s: %s setting up UDMA4 mode on VIA chip\n",
scp->lun, (device == ATA_MASTER) ? "master":"slave",
(error) ? "failed" : "success");
if (!error) {
pci_write_config(scp->dev, 0x53 - devno, 0xe8, 1);
scp->mode[(device == ATA_MASTER) ? 0 : 1] = ATA_UDMA4;
return 0;
}
}
if (udmamode >= 2) {
error = ata_command(scp, device, ATA_C_SETFEATURES, 0, 0, 0,
ATA_UDMA2, ATA_C_F_SETXFER, ATA_WAIT_READY);
if (bootverbose)
printf("ata%d-%s: %s setting up UDMA2 mode on VIA chip\n",
scp->lun, (device == ATA_MASTER) ? "master":"slave",
(error) ? "failed" : "success");
if (!error) {
pci_write_config(scp->dev, 0x53 - devno, 0xea, 1);
scp->mode[(device == ATA_MASTER) ? 0 : 1] = ATA_UDMA2;
return 0;
}
}
}
/* UDMA4 mode on AMD 756 */
if (udmamode >= 4 && scp->chiptype == 0x74091022) {
error = ata_command(scp, device, ATA_C_SETFEATURES, 0, 0, 0,
ATA_UDMA4, ATA_C_F_SETXFER, ATA_WAIT_READY);
if (bootverbose)
printf("ata%d-%s: %s setting up UDMA4 mode on AMD chip\n",
scp->lun, (device == ATA_MASTER) ? "master":"slave",
(error) ? "failed" : "success");
if (!error) {
pci_write_config(scp->dev, 0x53 - devno, 0xc3, 1);
scp->mode[(device == ATA_MASTER) ? 0 : 1] = ATA_UDMA4;
return 0;
}
}
/* UDMA2 mode only on 82C586 > rev1, 82C596, AMD 756 */
if ((udmamode >= 2 && ata_find_dev(scp->dev, 0x05861106) &&
pci_read_config(scp->dev, 0x08, 1) >= 0x01) ||
(udmamode >= 2 && ata_find_dev(scp->dev, 0x05961106)) ||
(udmamode >= 2 && scp->chiptype == 0x74091022)) {
error = ata_command(scp, device, ATA_C_SETFEATURES, 0, 0, 0,
ATA_UDMA2, ATA_C_F_SETXFER, ATA_WAIT_READY);
if (bootverbose)
printf("ata%d-%s: %s setting up UDMA2 mode on %s chip\n",
scp->lun, (device == ATA_MASTER) ? "master" : "slave",
(error) ? "failed" : "success",
(scp->chiptype == 0x74091022) ? "AMD" : "VIA");
if (!error) {
pci_write_config(scp->dev, 0x53 - devno, 0xc0, 1);
scp->mode[(device == ATA_MASTER) ? 0 : 1] = ATA_UDMA2;
return 0;
}
}
if (wdmamode >= 2 && apiomode >= 4) {
error = ata_command(scp, device, ATA_C_SETFEATURES, 0, 0, 0,
ATA_WDMA2, ATA_C_F_SETXFER, ATA_WAIT_READY);
if (bootverbose)
printf("ata%d-%s: %s setting up WDMA2 mode on %s chip\n",
scp->lun, (device == ATA_MASTER) ? "master" : "slave",
(error) ? "failed" : "success",
(scp->chiptype == 0x74091022) ? "AMD" : "VIA");
if (!error) {
pci_write_config(scp->dev, 0x53 - devno, 0x82, 1);
pci_write_config(scp->dev, 0x4b - devno, 0x31, 1);
scp->mode[(device == ATA_MASTER) ? 0 : 1] = ATA_WDMA2;
return 0;
}
}
/* we could set PIO mode timings, but we assume the BIOS did that */
break;
case 0x55131039: /* SiS 5591 */
if (udmamode >= 2) {
error = ata_command(scp, device, ATA_C_SETFEATURES, 0, 0, 0,
ATA_UDMA2, ATA_C_F_SETXFER, ATA_WAIT_READY);
if (bootverbose)
printf("ata%d-%s: %s setting up UDMA2 mode on SiS chip\n",
scp->lun, (device == ATA_MASTER) ? "master" : "slave",
(error) ? "failed" : "success");
if (!error) {
pci_write_config(scp->dev, 0x40 + (devno << 1), 0xa301, 2);
scp->mode[(device == ATA_MASTER) ? 0 : 1] = ATA_UDMA2;
return 0;
}
}
if (wdmamode >=2 && apiomode >= 4) {
error = ata_command(scp, device, ATA_C_SETFEATURES, 0, 0, 0,
ATA_WDMA2, ATA_C_F_SETXFER, ATA_WAIT_READY);
if (bootverbose)
printf("ata%d-%s: %s setting up WDMA2 mode on SiS chip\n",
scp->lun, (device == ATA_MASTER) ? "master" : "slave",
(error) ? "failed" : "success");
if (!error) {
pci_write_config(scp->dev, 0x40 + (devno << 1), 0x0301, 2);
scp->mode[(device == ATA_MASTER) ? 0 : 1] = ATA_WDMA2;
return 0;
}
}
/* we could set PIO mode timings, but we assume the BIOS did that */
break;
case 0x4d33105a: /* Promise Ultra33 / FastTrak33 controllers */
case 0x4d38105a: /* Promise Ultra66 / FastTrak66 controllers */
/* the Promise can only do DMA on ATA disks not on ATAPI devices */
if ((device == ATA_MASTER && scp->devices & ATA_ATAPI_MASTER) ||
(device == ATA_SLAVE && scp->devices & ATA_ATAPI_SLAVE))
break;
if (udmamode >=4 && scp->chiptype == 0x4d38105a &&
!(pci_read_config(scp->dev, 0x50, 2)&(scp->unit ? 1<<11 : 1<<10))) {
error = ata_command(scp, device, ATA_C_SETFEATURES, 0, 0, 0,
ATA_UDMA4, ATA_C_F_SETXFER, ATA_WAIT_READY);
if (bootverbose)
printf("ata%d-%s: %s setting up UDMA4 mode on Promise chip\n",
scp->lun, (device == ATA_MASTER) ? "master" : "slave",
(error) ? "failed" : "success");
if (!error) {
outb(scp->bmaddr+0x11, inl(scp->bmaddr+0x11) | scp->unit ? 8:2);
promise_timing(scp, devno, ATA_UDMA4);
scp->mode[(device == ATA_MASTER) ? 0 : 1] = ATA_UDMA4;
return 0;
}
}
if (udmamode >= 2) {
error = ata_command(scp, device, ATA_C_SETFEATURES, 0, 0, 0,
ATA_UDMA2, ATA_C_F_SETXFER, ATA_WAIT_READY);
if (bootverbose)
printf("ata%d-%s: %s setting up UDMA2 mode on Promise chip\n",
scp->lun, (device == ATA_MASTER) ? "master" : "slave",
(error) ? "failed" : "success");
if (!error) {
promise_timing(scp, devno, ATA_UDMA2);
scp->mode[(device == ATA_MASTER) ? 0 : 1] = ATA_UDMA2;
return 0;
}
}
if (wdmamode >= 2 && apiomode >= 4) {
error = ata_command(scp, device, ATA_C_SETFEATURES, 0, 0, 0,
ATA_WDMA2, ATA_C_F_SETXFER, ATA_WAIT_READY);
if (bootverbose)
printf("ata%d-%s: %s setting up WDMA2 mode on Promise chip\n",
scp->lun, (device == ATA_MASTER) ? "master" : "slave",
(error) ? "failed" : "success");
if (!error) {
promise_timing(scp, devno, ATA_WDMA2);
scp->mode[(device == ATA_MASTER) ? 0 : 1] = ATA_WDMA2;
return 0;
}
}
error = ata_command(scp, device, ATA_C_SETFEATURES, 0, 0, 0,
ata_pio2mode(apiomode),
ATA_C_F_SETXFER, ATA_WAIT_READY);
if (bootverbose)
printf("ata%d-%s: %s setting up PIO%d mode on Promise chip\n",
scp->lun, (device == ATA_MASTER) ? "master" : "slave",
(error) ? "failed" : "success",
(apiomode >= 0) ? apiomode : 0);
if (!error) {
promise_timing(scp, devno, ata_pio2mode(apiomode));
return 0;
}
break;
case 0x00041103: /* HighPoint HPT366 controller */
/* no ATAPI devices for now */
if ((device == ATA_MASTER && scp->devices & ATA_ATAPI_MASTER) ||
(device == ATA_SLAVE && scp->devices & ATA_ATAPI_SLAVE))
break;
if (udmamode >=4 && !(pci_read_config(scp->dev, 0x5a, 1) & 0x2)) {
error = ata_command(scp, device, ATA_C_SETFEATURES, 0, 0, 0,
ATA_UDMA4, ATA_C_F_SETXFER, ATA_WAIT_READY);
if (bootverbose)
printf("ata%d-%s: %s setting up UDMA4 mode on HPT366 chip\n",
scp->lun, (device == ATA_MASTER) ? "master" : "slave",
(error) ? "failed" : "success");
if (!error) {
hpt366_timing(scp, devno, ATA_UDMA4);
scp->mode[(device == ATA_MASTER) ? 0 : 1] = ATA_UDMA4;
return 0;
}
}
if (udmamode >= 2) {
error = ata_command(scp, device, ATA_C_SETFEATURES, 0, 0, 0,
ATA_UDMA2, ATA_C_F_SETXFER, ATA_WAIT_READY);
if (bootverbose)
printf("ata%d-%s: %s setting up UDMA2 mode on HPT366 chip\n",
scp->lun, (device == ATA_MASTER) ? "master" : "slave",
(error) ? "failed" : "success");
if (!error) {
hpt366_timing(scp, devno, ATA_UDMA2);
scp->mode[(device == ATA_MASTER) ? 0 : 1] = ATA_UDMA2;
return 0;
}
}
if (wdmamode >= 2 && apiomode >= 4) {
error = ata_command(scp, device, ATA_C_SETFEATURES, 0, 0, 0,
ATA_WDMA2, ATA_C_F_SETXFER, ATA_WAIT_READY);
if (bootverbose)
printf("ata%d-%s: %s setting up WDMA2 mode on HPT366 chip\n",
scp->lun, (device == ATA_MASTER) ? "master" : "slave",
(error) ? "failed" : "success");
if (!error) {
hpt366_timing(scp, devno, ATA_WDMA2);
scp->mode[(device == ATA_MASTER) ? 0 : 1] = ATA_WDMA2;
return 0;
}
}
error = ata_command(scp, device, ATA_C_SETFEATURES, 0, 0, 0,
ata_pio2mode(apiomode),
ATA_C_F_SETXFER, ATA_WAIT_READY);
if (bootverbose)
printf("ata%d-%s: %s setting up PIO%d mode on HPT366 chip\n",
scp->lun, (device == ATA_MASTER) ? "master" : "slave",
(error) ? "failed" : "success",
(apiomode >= 0) ? apiomode : 0);
if (!error) {
hpt366_timing(scp, devno, ata_pio2mode(apiomode));
return 0;
}
break;
default: /* unknown controller chip */
/* better not try generic DMA on ATAPI devices it almost never works */
if ((device == ATA_MASTER && scp->devices & ATA_ATAPI_MASTER) ||
(device == ATA_SLAVE && scp->devices & ATA_ATAPI_SLAVE))
break;
/* well, we have no support for this, but try anyways */
if ((wdmamode >= 2 && apiomode >= 4) && scp->bmaddr) {
#if MAYBE_NOT
&& (inb(scp->bmaddr + ATA_BMSTAT_PORT) &
((device == ATA_MASTER) ?
ATA_BMSTAT_DMA_MASTER : ATA_BMSTAT_DMA_SLAVE))) {
#endif
error = ata_command(scp, device, ATA_C_SETFEATURES, 0, 0, 0,
ATA_WDMA2, ATA_C_F_SETXFER, ATA_WAIT_READY);
if (bootverbose)
printf("ata%d-%s: %s setting up WDMA2 mode on generic chip\n",
scp->lun, (device == ATA_MASTER) ? "master" : "slave",
(error) ? "failed" : "success");
if (!error) {
scp->mode[(device == ATA_MASTER) ? 0 : 1] = ATA_WDMA2;
return 0;
}
}
}
free(dmatab, M_DEVBUF);
error = ata_command(scp, device, ATA_C_SETFEATURES, 0, 0, 0,
ata_pio2mode(apiomode), ATA_C_F_SETXFER,ATA_WAIT_READY);
if (bootverbose)
printf("ata%d-%s: %s setting up PIO%d mode on generic chip\n",
scp->lun, (device == ATA_MASTER) ? "master" : "slave",
(error) ? "failed" : "success", (apiomode >= 0) ? apiomode : 0);
if (!error)
scp->mode[(device == ATA_MASTER) ? 0 : 1] = ata_pio2mode(apiomode);
return -1;
}
int32_t
ata_dmasetup(struct ata_softc *scp, int32_t device,
int8_t *data, int32_t count, int32_t flags)
{
struct ata_dmaentry *dmatab;
u_int32_t dma_count, dma_base;
int32_t i = 0;
if (((uintptr_t)data & 1) || (count & 1))
return -1;
if (!count) {
printf("ata%d-%s: zero length DMA transfer attempted\n",
scp->lun, ((device == ATA_MASTER) ? "master" : "slave"));
return -1;
}
dmatab = scp->dmatab[(device == ATA_MASTER) ? 0 : 1];
dma_base = vtophys(data);
dma_count = MIN(count, (PAGE_SIZE - ((uintptr_t)data & PAGE_MASK)));
data += dma_count;
count -= dma_count;
while (count) {
dmatab[i].base = dma_base;
dmatab[i].count = (dma_count & 0xffff);
i++;
if (i >= ATA_DMA_ENTRIES) {
printf("ata%d-%s: too many segments in DMA table\n",
scp->lun, (device ? "slave" : "master"));
return -1;
}
dma_base = vtophys(data);
dma_count = MIN(count, PAGE_SIZE);
data += MIN(count, PAGE_SIZE);
count -= MIN(count, PAGE_SIZE);
}
dmatab[i].base = dma_base;
dmatab[i].count = (dma_count & 0xffff) | ATA_DMA_EOT;
outl(scp->bmaddr + ATA_BMDTP_PORT, vtophys(dmatab));
outb(scp->bmaddr + ATA_BMCMD_PORT, flags ? ATA_BMCMD_WRITE_READ:0);
outb(scp->bmaddr + ATA_BMSTAT_PORT, (inb(scp->bmaddr + ATA_BMSTAT_PORT) |
(ATA_BMSTAT_INTERRUPT | ATA_BMSTAT_ERROR)));
return 0;
}
void
ata_dmastart(struct ata_softc *scp)
{
scp->flags |= ATA_DMA_ACTIVE;
outb(scp->bmaddr + ATA_BMCMD_PORT,
inb(scp->bmaddr + ATA_BMCMD_PORT) | ATA_BMCMD_START_STOP);
}
int32_t
ata_dmadone(struct ata_softc *scp)
{
outb(scp->bmaddr + ATA_BMCMD_PORT,
inb(scp->bmaddr + ATA_BMCMD_PORT) & ~ATA_BMCMD_START_STOP);
scp->flags &= ~ATA_DMA_ACTIVE;
return inb(scp->bmaddr + ATA_BMSTAT_PORT) & ATA_BMSTAT_MASK;
}
int32_t
ata_dmastatus(struct ata_softc *scp)
{
return inb(scp->bmaddr + ATA_BMSTAT_PORT) & ATA_BMSTAT_MASK;
}
static void
promise_timing(struct ata_softc *scp, int32_t devno, int32_t mode)
{
u_int32_t timing;
switch (mode) {
default:
case ATA_PIO0: timing = 0x004ff329; break;
case ATA_PIO1: timing = 0x004fec25; break;
case ATA_PIO2: timing = 0x004fe823; break;
case ATA_PIO3: timing = 0x004fe622; break;
case ATA_PIO4: timing = 0x004fe421; break;
case ATA_WDMA2: timing = 0x004367f3; break;
case ATA_UDMA2: timing = 0x004127f3; break;
case ATA_UDMA4: timing = 0x004127f3; break;
}
pci_write_config(scp->dev, 0x60 + (devno << 2), timing, 4);
}
static void
hpt366_timing(struct ata_softc *scp, int32_t devno, int32_t mode)
{
u_int32_t timing;
switch (pci_read_config(scp->dev, 0x41 + (devno << 2), 1)) {
case 0x85: /* 25Mhz */
switch (mode) {
case ATA_PIO0: timing = 0xc0d08585; break;
case ATA_PIO1: timing = 0xc0d08572; break;
case ATA_PIO2: timing = 0xc0ca8542; break;
case ATA_PIO3: timing = 0xc0ca8532; break;
case ATA_PIO4: timing = 0xc0ca8521; break;
case ATA_WDMA2: timing = 0xa0ca8521; break;
case ATA_UDMA2: timing = 0x90cf8521; break;
case ATA_UDMA4: timing = 0x90c98521; break;
default: timing = 0x01208585;
}
break;
default:
case 0xa7: /* 33MHz */
switch (mode) {
case ATA_PIO0: timing = 0xc0d0a7aa; break;
case ATA_PIO1: timing = 0xc0d0a7a3; break;
case ATA_PIO2: timing = 0xc0d0a753; break;
case ATA_PIO3: timing = 0xc0c8a742; break;
case ATA_PIO4: timing = 0xc0c8a731; break;
case ATA_WDMA2: timing = 0xa0c8a731; break;
case ATA_UDMA2: timing = 0x90caa731; break;
case ATA_UDMA4: timing = 0x90c9a731; break;
default: timing = 0x0120a7a7;
}
break;
case 0xd9: /* 40Mhz */
switch (mode) {
case ATA_PIO0: timing = 0xc018d9d9; break;
case ATA_PIO1: timing = 0xc010d9c7; break;
case ATA_PIO2: timing = 0xc010d997; break;
case ATA_PIO3: timing = 0xc010d974; break;
case ATA_PIO4: timing = 0xc008d963; break;
case ATA_WDMA2: timing = 0xa008d943; break;
case ATA_UDMA2: timing = 0x900bd943; break;
case ATA_UDMA4: timing = 0x900fd943; break;
default: timing = 0x0120d9d9;
}
}
pci_write_config(scp->dev, 0x40 + (devno << 2) , timing, 4);
}
#else /* NPCI > 0 */
int32_t
ata_dmainit(struct ata_softc *scp, int32_t device,
int32_t piomode, int32_t wdmamode, int32_t udmamode)
{
return -1;
}
int32_t
ata_dmasetup(struct ata_softc *scp, int32_t device,
int8_t *data, int32_t count, int32_t flags)
{
return -1;
}
void
ata_dmastart(struct ata_softc *scp)
{
}
int32_t
ata_dmadone(struct ata_softc *scp)
{
return -1;
}
int32_t
ata_dmastatus(struct ata_softc *scp)
{
return -1;
}
#endif /* NPCI > 0 */
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