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freebsd-nq/sys/pci/ide_pci.c
Peter Wemm acf5b0bacb Remove some horrible #if 0'd code that has no hope of working now. It 
used to edit the old-style isa_devtab config tables to insert a mapping
for a pci device into the isa tables so that the wdc driver could probe
it later.  This has been #if 0'd since April.
1999-12-12 14:47:23 +00:00

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/*
* Copyright 1996 Massachusetts Institute of Technology
*
* Permission to use, copy, modify, and distribute this software and
* its documentation for any purpose and without fee is hereby
* granted, provided that both the above copyright notice and this
* permission notice appear in all copies, that both the above
* copyright notice and this permission notice appear in all
* supporting documentation, and that the name of M.I.T. not be used
* in advertising or publicity pertaining to distribution of the
* software without specific, written prior permission. M.I.T. makes
* no representations about the suitability of this software for any
* purpose. It is provided "as is" without express or implied
* warranty.
*
* THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''. M.I.T. DISCLAIMS
* ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT
* SHALL M.I.T. 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 "wd.h"
#if NWDC > 0
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/buf.h>
#include <sys/malloc.h>
#include <sys/kernel.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include <i386/isa/wdreg.h>
#ifdef PC98
#include <pc98/pc98/pc98.h>
#else
#include <i386/isa/isa.h>
#endif
#include <i386/isa/isa_device.h>
#include <pci/pcivar.h>
#include <pci/pcireg.h>
#include <pci/ide_pcireg.h>
#ifndef MIN
#define MIN(a,b) (((a)<(b))?(a):(b))
#endif
#define PROMISE_ULTRA33 0x4d33105a
#define CMD640B_PCI_ID 0x06401095
struct ide_pci_cookie; /* structs vendor_fns, ide_pci_cookie are recursive */
struct vendor_fns {
int (*vendor_dmainit) /* initialize DMA controller and drive */
(struct ide_pci_cookie *cookie,
struct wdparams *wp,
int (*wdcmd)(int, void *),
void *);
void (*vendor_status) /* prints off DMA timing info */
(struct ide_pci_cookie *cookie);
};
/*
* XXX the fact that this list keeps all kinds of info on PCI controllers
* is pretty grotty-- much of this should be replaced by a proper integration
* of PCI probes into the wd driver.
* XXX if we're going to support native-PCI controllers, we also need to
* keep the address of the IDE control block register, which is something wd.c
* needs to know, which is why this info is in the wrong place.
*/
struct ide_pci_cookie {
LIST_ENTRY(ide_pci_cookie) le;
int iobase_wd;
int ctlr; /* controller 0/1 on PCI IDE interface */
int unit;
int iobase_bm; /* SFF-8038 control registers */
int altiobase_wd;
pcici_t tag;
pcidi_t type;
struct ide_pci_prd *prd;
struct vendor_fns vs;
};
struct ide_pci_softc {
LIST_HEAD(, ide_pci_cookie) cookies;
};
static int
generic_dmainit(struct ide_pci_cookie *cookie,
struct wdparams *wp,
int (*wdcmd)(int, void *),
void *wdinfo);
static void
generic_status(struct ide_pci_cookie *cookie);
static int
sis_5591_dmainit(struct ide_pci_cookie *cookie,
struct wdparams *wp,
int (*wdcmd)(int, void *),
void *wdinfo);
static void
sis_5591_status(struct ide_pci_cookie *cookie);
static void
via_571_status(struct ide_pci_cookie *cookie);
static int
via_571_dmainit(struct ide_pci_cookie *cookie,
struct wdparams *wp,
int (*wdcmd)(int, void *),
void *wdinfo);
static void
acer_status(struct ide_pci_cookie *cookie);
static int
acer_dmainit(struct ide_pci_cookie *cookie,
struct wdparams *wp,
int (*wdcmd)(int, void *),
void *wdinfo);
static void
intel_piix_dump_drive(char *ctlr,
int sitre,
int is_piix4,
int word40,
int word44,
int word48,
int word4a,
int drive);
static void
intel_piix_status(struct ide_pci_cookie *cookie);
static int
intel_piix_dmainit(struct ide_pci_cookie *cookie,
struct wdparams *wp,
int (*wdcmd)(int, void *),
void *wdinfo);
static struct ide_pci_cookie *
mkcookie(int iobase_wd,
int ctlr,
int unit,
int iobase_bm,
pcici_t tag,
pcidi_t type,
struct vendor_fns *vp,
int altiobase_wd);
static void ide_pci_attach(pcici_t tag, int unit);
static void *ide_pci_candma(int, int, int);
static int ide_pci_dmainit(void *,
struct wdparams *,
int (*)(int, void *),
void *);
static int ide_pci_dmaverify(void *, char *, u_long, int);
static int ide_pci_dmasetup(void *, char *, u_long, int);
static void ide_pci_dmastart(void *);
static int ide_pci_dmadone(void *);
static int ide_pci_status(void *);
static int ide_pci_iobase(void *xcp);
static int ide_pci_altiobase(void *xcp);
static struct ide_pci_softc softc;
static int ide_pci_softc_cookies_initted = 0;
extern struct isa_driver wdcdriver;
/*
* PRD_ALLOC_SIZE should be something that will not be allocated across a 64k
* boundary.
* PRD_MAX_SEGS is defined to be the maximum number of segments required for
* a transfer on an IDE drive, for an xfer that is linear in virtual memory.
* PRD_BUF_SIZE is the size of the buffer needed for a PRD table.
*/
#define PRD_ALLOC_SIZE PAGE_SIZE
#define PRD_MAX_SEGS ((256 * 512 / PAGE_SIZE) + 1)
#define PRD_BUF_SIZE PRD_MAX_SEGS * 8
static void *prdbuf = 0;
static void *prdbuf_next = 0;
/*
* Hardware specific IDE controller code. All vendor-specific code
* for handling IDE timing and other chipset peculiarities should be
* encapsulated here.
*/
/* helper funcs */
/*
* nnn_mode() return the highest valid mode, or -1 if the mode class is
* not supported
*/
static __inline int
pio_mode(struct wdparams *wp)
{
if ((wp->wdp_atavalid & 2) == 2) {
if ((wp->wdp_eidepiomodes & 2) == 2) return 4;
if ((wp->wdp_eidepiomodes & 1) == 1) return 3;
}
return -1;
}
#if 0
static __inline int
dma_mode(struct wdparams *wp)
{
/* XXX not quite sure how to verify validity on this field */
}
#endif
static __inline int
mwdma_mode(struct wdparams *wp)
{
/*
* XXX technically, using wdp_atavalid to test for validity of
* this field is not quite correct
*/
if ((wp->wdp_atavalid & 2) == 2) {
if ((wp->wdp_dmamword & 4) == 4) return 2;
if ((wp->wdp_dmamword & 2) == 2) return 1;
if ((wp->wdp_dmamword & 1) == 1) return 0;
}
return -1;
}
static __inline int
udma_mode(struct wdparams *wp)
{
if ((wp->wdp_atavalid & 4) == 4) {
if ((wp->wdp_udmamode & 4) == 4) return 2;
if ((wp->wdp_udmamode & 2) == 2) return 1;
if ((wp->wdp_udmamode & 1) == 1) return 0;
}
return -1;
}
/* Generic busmastering PCI-IDE */
static int
generic_dmainit(struct ide_pci_cookie *cookie,
struct wdparams *wp,
int(*wdcmd)(int, void *),
void *wdinfo)
{
/*
* punt on the whole timing issue by looking for either a
* drive programmed for both PIO4 and mDMA2 (which use similar
* timing) or a drive in an UltraDMA mode (hopefully all
* controllers have separate timing for UDMA). one hopes that if
* the drive's DMA mode has been configured by the BIOS, the
* controller's has also.
*
* XXX there are examples where this approach is now known to be
* broken, at least on systems based on Intel chipsets.
*/
if ((pio_mode(wp) >= 4 && mwdma_mode(wp) >= 2) ||
(udma_mode(wp) >= 2)) {
printf("ide_pci: generic_dmainit %04x:%d: warning, IDE controller timing not set\n",
cookie->iobase_wd,
cookie->unit);
/* If we're here, then this controller is most likely not set
for UDMA, even if the drive may be. Make the drive wise
up. */
if(!wdcmd(WDDMA_MDMA2, wdinfo))
printf("generic_dmainit: could not set multiword DMA mode!\n");
return 1;
}
#ifdef IDE_PCI_DEBUG
printf("pio_mode: %d, mwdma_mode(wp): %d, udma_mode(wp): %d\n",
pio_mode(wp), mwdma_mode(wp), udma_mode(wp));
#endif
return 0;
}
static void
generic_status(struct ide_pci_cookie *cookie)
{
printf("generic_status: no PCI IDE timing info available\n");
}
static struct vendor_fns vs_generic =
{
generic_dmainit,
generic_status
};
/* VIA Technologies "82C571" PCI-IDE controller core */
static void
via_571_status(struct ide_pci_cookie *cookie)
{
int iobase_wd;
int ctlr, unit;
int iobase_bm;
pcici_t tag;
pcidi_t type;
u_long word40[5];
int i, unitno;
iobase_wd = cookie->iobase_wd;
unit = cookie->unit;
ctlr = cookie->ctlr;
iobase_bm = cookie->iobase_bm;
tag = cookie->tag;
type = cookie->type;
unitno = ctlr * 2 + unit;
for (i=0; i<5; i++) {
word40[i] = pci_conf_read(tag, i * 4 + 0x40);
}
if (ctlr == 0)
printf("via_571_status: Primary IDE prefetch/postwrite %s/%s\n",
word40[0] & 0x8000 ? "enabled" : "disabled",
word40[0] & 0x4000 ? "enabled" : "disabled");
else
printf("via_571_status: Secondary IDE prefetch/postwrite %s/%s\n",
word40[0] & 0x2000 ? "enabled" : "disabled",
word40[0] & 0x1000 ? "enabled" : "disabled");
printf("via_571_status: busmaster status read retry %s\n",
(word40[1] & 0x08) ? "enabled" : "disabled");
printf("via_571_status: %s drive %d data setup=%d active=%d recovery=%d\n",
unitno < 2 ? "primary" : "secondary",
unitno & 1,
((u_int)(word40[3] >> ((3 - unitno) * 2)) & 3) + 1,
((u_int)(word40[2] >> (((3 - unitno) * 8) + 4)) & 0x0f) + 1,
((u_int)(word40[2] >> ((3 - unitno) * 8)) & 0x0f) + 1);
if (ctlr == 0)
printf("via_571_status: primary ctrl active=%d recovery=%d\n",
((u_int)(word40[3] >> 28) & 0x0f) + 1,
((u_int)(word40[2] >> 24) & 0x0f) + 1);
else
printf("via_571_status: secondary ctrl active=%d recovery=%d\n",
((u_int)(word40[3] >> 20) & 0x0f) + 1,
((u_int)(word40[2] >> 16) & 0x0f) + 1);
/* UltraDMA dump */
{
int foo;
foo = word40[4] >> ((3 - unitno) * 8);
printf("via_571_status: %s drive %d udma method=%d enable=%d PIOmode=%d cycle=%d\n",
i < 2 ? "primary" : "secondary",
i & 1,
(foo >> 7) & 1,
(foo >> 6) & 1,
(foo >> 5) & 1,
(foo & 3) + 2);
}
}
/*
* XXX timing values set here are only good for 30/33MHz buses; should deal
* with slower ones too (BTW: you overclock-- you lose)
*/
static int
via_571_dmainit(struct ide_pci_cookie *cookie,
struct wdparams *wp,
int(*wdcmd)(int, void *),
void *wdinfo)
{
u_long pci_revision;
int unitno;
pci_revision = pci_conf_read(cookie->tag, PCI_CLASS_REG) &
PCI_REVISION_MASK;
unitno = cookie->ctlr * 2 + cookie->unit;
/* If it's a UDMA drive on a '590, set it up */
/*
* XXX the revision number we check for is of dubious validity.
* it's extracted from the AMD 645 datasheet.
*/
if (pci_revision >= 1 && udma_mode(wp) >= 2) {
unsigned int word50, mask, new;
word50 = pci_conf_read(cookie->tag, 0x50);
/* UDMA enable by SET FEATURES, DMA cycles, cycle time 2T */
mask = 0xe3000000 >> (unitno * 8);
new = 0x40000000 >> (unitno * 8);
word50 &= ~mask;
word50 |= new;
pci_conf_write(cookie->tag, 0x50, word50);
/*
* With the '590, drive configuration should come *after* the
* controller configuration, to make sure the controller sees
* the SET FEATURES command and does the right thing.
*/
/* Set UDMA mode 2 on drive */
if (bootverbose)
printf("via_571_dmainit: setting ultra DMA mode 2\n");
if (!wdcmd(WDDMA_UDMA2, wdinfo)) {
printf("via_571_dmainit: setting DMA mode failed\n");
return 0;
}
if (bootverbose)
via_571_status(cookie);
return 1;
}
/* otherwise, try and program it for MW DMA mode 2 */
else if (mwdma_mode(wp) >= 2 && pio_mode(wp) >= 4) {
u_long workword;
/* Set multiword DMA mode 2 on drive */
if (bootverbose)
printf("via_571_dmainit: setting multiword DMA mode 2\n");
if (!wdcmd(WDDMA_MDMA2, wdinfo)) {
printf("via_571_dmainit: setting DMA mode failed\n");
return 0;
}
/* Configure the controller appropriately for MWDMA mode 2 */
workword = pci_conf_read(cookie->tag, 0x40);
/*
* enable prefetch/postwrite-- XXX may cause problems
* with CD-ROMs?
*/
workword |= 0xc000 >> (cookie->ctlr * 2);
/* FIFO configurations-- equal split, threshold 1/2 */
workword &= 0x90ffffff;
workword |= 0x2a000000;
pci_conf_write(cookie->tag, 0x40, workword);
workword = pci_conf_read(cookie->tag, 0x44);
/* enable status read retry */
workword |= 8;
/* enable FIFO flush on interrupt and end of sector */
workword &= 0xff0cffff;
workword |= 0x00f00000;
pci_conf_write(cookie->tag, 0x44, workword);
workword = pci_conf_read(cookie->tag, 0x48);
/* set Mode2 timing */
workword &= ~(0xff000000 >> (unitno * 8));
workword |= 0x31000000 >> (unitno * 8);
pci_conf_write(cookie->tag, 0x48, workword);
/* set sector size */
pci_conf_write(cookie->tag, cookie->ctlr ? 0x68 : 0x60, 0x200);
if (bootverbose)
via_571_status(cookie);
return 1;
}
return 0;
}
static struct vendor_fns vs_via_571 =
{
via_571_dmainit,
via_571_status
};
/* Cyrix Cx5530 Courtesy of Whistle Communications */
/*
* Verify that controller can handle a dma request for cp. Should
* not affect any hardware or driver state.
* Special version for 5530 that allows only transfers on 16 byte boundaries.(!)
* (Yes the Cyrix 5530 can only UDMA to cache-line boundaries.(bleh!))
* Luckily nearly all disk IO is to kernel bufers which are page alligned.
* They may fix this in some other version of the chip, but it's in the latest
* at this time (Jan 1999).
*/
static int
cyrix_5530_dmaverify(void *xcp, char *vaddr, u_long count, int dir)
{
int badfu;
/*
* check for nonaligned or odd-length Stuff
*/
badfu = ((unsigned int)vaddr & 0xf) || (count & 0xf);
#ifdef DIAGNOSTIC
if (badfu) {
printf("ide_pci: dmaverify odd vaddr or length, ");
printf("vaddr = %p length = %08lx\n", (void *)vaddr, count);
}
#endif
return (!badfu);
}
/*
* XXX Unit number handling may be broken in the Cx5530 modules.
* It has only been checked with a single drive.
* 12MByte/Sec transfer rates were seen with Quantum Fireball drives
* with negligable CPU usage.
*/
static void
cyrix_5530_status(struct ide_pci_cookie *cookie)
{
int iobase_wd;
int ctlr, unit;
int iobase_bm;
pcici_t tag;
pcidi_t type;
u_long PIO_config;
u_long DMA_config;
int unitno;
iobase_wd = cookie->iobase_wd;
unit = cookie->unit;
ctlr = cookie->ctlr;
iobase_bm = cookie->iobase_bm;
tag = cookie->tag;
type = cookie->type;
unitno = ctlr * 2 + unit;
PIO_config = inl(iobase_bm + (unit * 0x10) + 0x20);
DMA_config = inl(iobase_bm + (unit * 0x10) + 0x24);
printf("cyrix_5530_status: %s:%u IDE PIO cfg: 0x%08lx\n",
(ctlr ? "Secondary" : "Primary"), unit, PIO_config);
printf("cyrix_5530_status: %s:%u IDE DMA cfg: 0x%08lx\n",
(ctlr ? "Secondary" : "Primary"), unit, DMA_config);
}
/*
* XXX timing values set here are only good for 30/33MHz buses; should deal
* with slower ones too (BTW: you overclock-- you lose)
*/
static int
cyrix_5530_dmainit(struct ide_pci_cookie *cookie,
struct wdparams *wp,
int(*wdcmd)(int, void *),
void *wdinfo)
{
u_long pci_revision;
int unitno;
int iobase_bm;
int unit;
int drivemode;
int mode;
int regval;
/*cookie->unit = 0; */ /* XXX */
unit = cookie->unit;
pci_revision = pci_conf_read(cookie->tag, PCI_CLASS_REG) &
PCI_REVISION_MASK;
unitno = cookie->ctlr * 2 + unit;
iobase_bm = cookie->iobase_bm;
printf("Setting using 0x%x\n", iobase_bm);
if ((cookie->ctlr == 0) && (unit == 0)) /* XXX */
outb(iobase_bm + (unit * 0x10) + BMISTA_PORT, 0xe6);
/* If it's a UDMA drive on a '5530, set it up */
/*
* depending on what the drive can do,
* set the correct modes,
*/
printf("wd%d: mw=0x%x, pio=0x%x, pcirev=0x%lx, udma=0x%x\n",
unitno,
mwdma_mode(wp), pio_mode(wp),
pci_revision, udma_mode(wp));
if (/* pci_revision >= 1 && */ udma_mode(wp) >= 0) {
switch(udma_mode(wp)) {
case 0:
mode = 0;
drivemode = WDDMA_UDMA0;
regval = 0x00921250;
break;
default: /* newer modes not supported */
case 2:
#if 0
/*
* XXX The 5530 can do mode 2 but if you do use it, it will block all
* access to the PCI bus (and thus the ISA bus, PICs, PIT, etc. etc.) until the
* transfer is complete. Mode 2 swamps the 5530 so much it can't really cope
* with any other operations. Therefore, use mode 1 for drives that can
* do mode 2 (or more). (FALL THROUGH)
*/
mode = 2;
drivemode = WDDMA_UDMA2;
regval = 0x00911030;
break;
#endif
case 1:
mode = 1;
drivemode = WDDMA_UDMA1;
regval = 0x00911140;
break;
}
/*
* With the Cx5530, drive configuration
* should come *after* the controller configuration,
* to make sure the controller sees
* the command and does the right thing.
*/
/* Set UDMA mode on drive */
if (bootverbose)
printf("cyrix_5530_dmainit: set UDMA mode %d\n", mode);
outl(iobase_bm+0x24 + (unit * 16), regval);
if (!wdcmd(drivemode, wdinfo)) {
printf("cyrix_5530_dmainit: setting DMA mode failed\n");
return 0;
}
if (bootverbose)
cyrix_5530_status(cookie);
return 1;
}
/* otherwise, try and program it for MW DMA mode 2 */
else if (mwdma_mode(wp) >= 0 && pio_mode(wp) >= 4) {
switch(mwdma_mode(wp)) {
case 0:
mode = 0;
drivemode = WDDMA_MDMA0;
regval = 0x00017771;
break;
case 1:
mode = 1;
drivemode = WDDMA_MDMA1;
regval = 0x00012121;
break;
default: /* newer modes not supported */
case 2:
mode = 2;
drivemode = WDDMA_MDMA2;
regval = 0x00002020;
break;
}
/* Set multiword DMA mode 2 on drive */
if (bootverbose)
printf("cyrix_5530_dmainit: multiword DMA mode %d\n",
mode);
if (!wdcmd(drivemode, wdinfo)) {
printf("cyrix_5530_dmainit: setting DMA mode failed\n");
return 0;
}
/* Configure the controller appropriately for MWDMA mode */
outl(iobase_bm + 0x24 + (unit * 16), regval);
if (bootverbose)
cyrix_5530_status(cookie);
return 1;
}
/*
* Always set the PIO mode values.
*/
switch(pio_mode(wp)) {
case 0:
mode = 0;
drivemode = WDDMA_MDMA0;
regval = 0x0000E132;
break;
case 1:
mode = 1;
drivemode = WDDMA_MDMA1;
regval = 0x00001812;
break;
case 2:
mode = 2;
drivemode = WDDMA_MDMA1;
regval = 0x00024020;
break;
case 3:
mode = 3;
drivemode = WDDMA_MDMA1;
regval = 0x00032010;
break;
default: /* newer modes not supported */
case 4:
mode = 4;
drivemode = WDDMA_MDMA2;
regval = 0x00040010;
break;
}
outl(iobase_bm + 0x20 + (unit * 16), regval);
printf("cyrix_5530_dmainit: setting PIO mode %d\n", mode);
return 0;
}
static struct vendor_fns vs_cyrix_5530 =
{
cyrix_5530_dmainit,
cyrix_5530_status
};
static void
promise_status(struct ide_pci_cookie *cookie)
{
pcici_t tag;
int i;
u_int32_t port0_command, port0_altstatus;
u_int32_t port1_command, port1_altstatus;
u_int32_t dma_block;
u_int32_t lat_and_interrupt;
u_int32_t drivetiming;
int pa, pb, mb, mc;
tag = cookie->tag;
port0_command = pci_conf_read(tag, 0x10);
port0_altstatus = pci_conf_read(tag, 0x14);
port1_command = pci_conf_read(tag, 0x18);
port1_altstatus = pci_conf_read(tag, 0x1c);
dma_block = pci_conf_read(tag, 0x20);
lat_and_interrupt = pci_conf_read(tag, 0x3c);
printf("promise_status: port0: 0x%lx, port0_alt: 0x%lx, port1: 0x%lx, port1_alt: 0x%lx\n",
(u_long)port0_command, (u_long)port0_altstatus, (u_long)port1_command,
(u_long)port1_altstatus);
printf(
"promise_status: dma control blk address: 0x%lx, int: %d, irq: %d\n",
(u_long)dma_block, (u_int)(lat_and_interrupt >> 8) & 0xff,
(u_int)lat_and_interrupt & 0xff);
for(i=0;i<4;i+=2) {
drivetiming = pci_conf_read(tag, 0x60 + i * 4);
printf("drivebits%d-%d: %b\n", i, i+1, drivetiming,
"\020\05Prefetch\06Iordy\07Errdy\010Sync\025DmaW\026DmaR");
pa = drivetiming & 0xf;
pb = (drivetiming >> 8) & 0x1f;
mb = (drivetiming >> 13) & 0x7;
mc = (drivetiming >> 16) & 0xf;
printf("drivetiming%d: pa: 0x%x, pb: 0x%x, mb: 0x%x, mc: 0x%x\n",
i, pa, pb, mb, mc);
drivetiming = pci_conf_read(tag, 0x60 + (i + 1) * 4);
pa = drivetiming & 0xf;
pb = (drivetiming >> 8) & 0x1f;
mb = (drivetiming >> 13) & 0x7;
mc = (drivetiming >> 16) & 0xf;
printf("drivetiming%d: pa: 0x%x, pb: 0x%x, mb: 0x%x, mc: 0x%x\n",
i + 1, pa, pb, mb, mc);
}
}
static struct vendor_fns vs_promise =
{
generic_dmainit,
promise_status
};
/* Intel PIIX, PIIX3, and PIIX4 IDE controller subfunctions */
static void
intel_piix_dump_drive(char *ctlr,
int sitre,
int is_piix4,
int word40,
int word44,
int word48,
int word4a,
int drive)
{
char *ms;
if (!sitre)
ms = "master/slave";
else if (drive == 0)
ms = "master";
else
ms = "slave";
printf("intel_piix_status: %s %s sample = %d, %s recovery = %d\n",
ctlr,
ms,
5 - ((sitre && drive) ?
((word44 >> 2) & 3) :
((word40 >> 12) & 3)),
ms,
4 - ((sitre && drive) ?
((word44 >> 0) & 3) :
((word40 >> 8) & 3)));
word40 >>= (drive * 4);
printf("intel_piix_status: %s %s fastDMAonly %s, pre/post %s,\n\
intel_piix_status: IORDY sampling %s,\n\
intel_piix_status: fast PIO %s%s\n",
ctlr,
(drive == 0) ? "master" : "slave",
(word40 & 8) ? "enabled" : "disabled",
(word40 & 4) ? "enabled" : "disabled",
(word40 & 2) ? "enabled" : "disabled",
(word40 & 1) ? "enabled" : "disabled",
((word40 & 9) == 9) ? " (overridden by fastDMAonly)" : "" );
if (is_piix4)
printf("intel_piix_status: UltraDMA %s, CT/RP = %d/%d\n",
word48 ? "enabled": "disabled",
4 - (word4a & 3),
6 - (word4a & 3));
}
static void
intel_piix_status(struct ide_pci_cookie *cookie)
{
int iobase_wd;
int unit;
int iobase_bm;
pcici_t tag;
pcidi_t type;
int ctlr;
u_long word40, word44, word48;
int sitre, is_piix4;
iobase_wd = cookie->iobase_wd;
unit = cookie->unit;
iobase_bm = cookie->iobase_bm;
tag = cookie->tag;
type = cookie->type;
ctlr = cookie->ctlr;
word40 = pci_conf_read(tag, 0x40);
word44 = pci_conf_read(tag, 0x44);
word48 = pci_conf_read(tag, 0x48);
/*
* XXX will not be right for the *next* generation of upward-compatible
* intel IDE controllers...
*/
is_piix4 = pci_conf_read(tag, PCI_CLASS_REG) == 0x71118086;
sitre = word40 & 0x4000;
switch (ctlr * 2 + unit) {
case 0:
intel_piix_dump_drive("primary",
sitre,
is_piix4,
word40 & 0xffff,
word44 & 0x0f,
word48,
word48 >> 16,
0);
break;
case 1:
intel_piix_dump_drive("primary",
sitre,
is_piix4,
word40 & 0xffff,
word44 & 0x0f,
word48 >> 1,
word48 >> 20,
1);
break;
case 2:
intel_piix_dump_drive("secondary",
sitre,
is_piix4,
(word40 >> 16) & 0xffff,
(word44 >> 4) & 0x0f,
word48 >> 2,
word48 >> 24,
0);
break;
case 3:
intel_piix_dump_drive("secondary",
sitre,
is_piix4,
(word40 >> 16) & 0xffff,
(word44 >> 4) & 0x0f,
word48 >> 3,
word48 >> 28,
1);
break;
default:
printf("intel_piix_status: bad drive or controller number\n");
}
}
/*
* XXX timing values set hereare only good for 30/33MHz buses; should deal
* with slower ones too (BTW: you overclock-- you lose)
*/
static int
intel_piix_dmainit(struct ide_pci_cookie *cookie,
struct wdparams *wp,
int(*wdcmd)(int, void *),
void *wdinfo)
{
/* If it's a UDMA drive and a PIIX4, set it up */
if (cookie->type == 0x71118086 && udma_mode(wp) >= 2) {
/* Set UDMA mode 2 on controller */
int unitno, mask, new;
if (bootverbose)
printf("intel_piix_dmainit: setting ultra DMA mode 2\n");
if (!wdcmd(WDDMA_UDMA2, wdinfo)) {
printf("intel_piix_dmainit: setting DMA mode failed\n");
return 0;
}
unitno = cookie->ctlr * 2 + cookie->unit;
mask = (1 << unitno) + (3 << (16 + unitno * 4));
new = (1 << unitno) + (2 << (16 + unitno * 4));
pci_conf_write(cookie->tag, 0x48,
(pci_conf_read(cookie->tag, 0x48) & ~mask) | new);
if (bootverbose)
intel_piix_status(cookie);
return 1;
}
/*
* if it's an 82371FB, which can't do independent programming of
* drive timing, we punt; we're not going to fuss with trying to
* coordinate timing modes between drives. if this is you, get a
* new motherboard. or contribute patches :)
*
* we do now at least see if the modes set are OK to use. this should
* satisfy the majority of people, with mwdma mode2 drives.
*/
else if (cookie->type == 0x12308086)
{
u_long word40;
/* can drive do PIO 4 and MW DMA 2? */
if (!(mwdma_mode(wp) >= 2 && pio_mode(wp) >= 4))
return 0;
word40 = pci_conf_read(cookie->tag, 0x40);
word40 >>= cookie->ctlr * 16;
/* Check for timing config usable for DMA on controller */
if (!((word40 & 0x3300) == 0x2300 &&
((word40 >> (cookie->unit * 4)) & 1) == 1))
return 0;
/* Set multiword DMA mode 2 on drive */
if (bootverbose)
printf("intel_piix_dmainit: setting multiword DMA mode 2\n");
if (!wdcmd(WDDMA_MDMA2, wdinfo)) {
printf("intel_piix_dmainit: setting DMA mode failed\n");
return 0;
}
return 1;
}
/* otherwise, treat it as a PIIX3 and program it for MW DMA mode 2 */
else if (mwdma_mode(wp) >= 2 && pio_mode(wp) >= 4) {
u_long mask40, mask44, new40, new44;
/*
* If SITRE is not set, set it and copy the
* appropriate bits into the secondary registers. Do
* both controllers at once.
*/
if (((pci_conf_read(cookie->tag, 0x40) >> (16 * cookie->ctlr))
& 0x4000) == 0) {
unsigned int word40, word44;
word40 = pci_conf_read(cookie->tag, 0x40);
/* copy bits to secondary register */
word44 = pci_conf_read(cookie->tag, 0x44);
/*
* I've got a Biostar motherboard with Award
* BIOS that sets SITRE and secondary timing
* on one controller but not the other.
* Bizarre.
*/
if ((word40 & 0x4000) == 0) {
word44 &= ~0xf;
word44 |= ((word40 & 0x3000) >> 10) |
((word40 & 0x0300) >> 8);
}
if ((word40 & 0x40000000) == 0) {
word44 &= ~0xf0;
word44 |= ((word40 & 0x30000000) >> 22) |
((word40 & 0x03000000) >> 20);
}
/* set SITRE */
word40 |= 0x40004000;
pci_conf_write(cookie->tag, 0x40, word40);
pci_conf_write(cookie->tag, 0x44, word44);
}
/* Set multiword DMA mode 2 on drive */
if (bootverbose)
printf("intel_piix_dmainit: setting multiword DMA mode 2\n");
if (!wdcmd(WDDMA_MDMA2, wdinfo)) {
printf("intel_piix_dmainit: setting DMA mode failed\n");
return 0;
}
/*
* backward compatible hardware leaves us with such
* twisted masses of software (aka twiddle the
* extremely weird register layout on a PIIX3, setting
* PIO mode 4 and MWDMA mode 2)
*/
if (cookie->unit == 0) {
mask40 = 0x330f;
new40 = 0x2307;
mask44 = 0;
new44 = 0;
} else {
mask40 = 0x00f0;
new40 = 0x0070;
mask44 = 0x000f;
new44 = 0x000b;
}
if (cookie->ctlr) {
mask40 <<= 16;
new40 <<= 16;
mask44 <<= 4;
new44 <<= 4;
}
pci_conf_write(cookie->tag, 0x40,
(pci_conf_read(cookie->tag, 0x40) & ~mask40) | new40);
pci_conf_write(cookie->tag, 0x44,
(pci_conf_read(cookie->tag, 0x44) & ~mask44) | new44);
if (bootverbose)
intel_piix_status(cookie);
return 1;
}
return 0;
}
static struct vendor_fns vs_intel_piix =
{
intel_piix_dmainit,
intel_piix_status
};
static void
acer_status(struct ide_pci_cookie *cookie) {
/* XXX does not do anything right now */
}
static int
acer_dmainit(struct ide_pci_cookie *cookie,
struct wdparams *wp,
int(*wdcmd)(int, void *),
void *wdinfo)
{
/* Acer Aladdin DMA setup code. UDMA looks to be sinfully easy to set
on this thing - just one register. */
u_long word54 = pci_conf_read(cookie->tag, 0x54);
/* Set the default Acer FIFO settings (0x55 = 13-word depth and
slave operation mode 1) */
word54 |= 0x5555;
/* Is this drive UDMA? Set it up if so... */
if(udma_mode(wp) >= 2) {
/* This is really easy to do. Just write 0xa (enable
UDMA mode with 2T timing) into the word at the right
places. */
word54 |= (0xA << (16 + (cookie->ctlr * 8) + (cookie->unit * 4)));
/* Now set the drive for UDMA2. */
if(!wdcmd(WDDMA_UDMA2, wdinfo)) {
printf("acer_dmainit: could not set UDMA2 mode on wdc%d:%d!\n", cookie->ctlr, cookie->unit);
return 0;
}
/* Write the new config into the registers. I'm not
sure if I'm doing this in the right order. */
pci_conf_write(cookie->tag, 0x54, word54);
} else if(mwdma_mode(wp) >= 2 && pio_mode(wp) >=4) {
/* Otherwise, we're already set for regular DMA. */
if(!wdcmd(WDDMA_MDMA2, wdinfo)) {
printf("acer_dmainit: could not set MWDMA2 mode on wdc%d:%d!\n",
cookie->ctlr, cookie->unit);
return 0;
}
return 1;
}
return 0;
}
static struct vendor_fns vs_acer =
{
acer_dmainit,
acer_status
};
/* SiS 5591 */
static void
sis_5591_status(struct ide_pci_cookie *cookie)
{
int iobase_wd;
int ctlr, unit;
int iobase_bm;
pcici_t tag;
pcidi_t type;
u_int word40[5];
int i, unitno;
int DRTC, DATC;
int val;
iobase_wd = cookie->iobase_wd;
unit = cookie->unit;
ctlr = cookie->ctlr;
iobase_bm = cookie->iobase_bm;
tag = cookie->tag;
type = cookie->type;
unitno = ctlr * 2 + unit;
for (i=0; i<5; i++) {
word40[i] = pci_conf_read(tag, i * 4 + 0x40);
}
DRTC = word40[ctlr] >> (16 * unit);
DATC = word40[ctlr] >> (8 + 16*unit);
if (unitno == 0) {
if ((word40[4] & 0x80000) == 0) {
val = word40[2] & 0xf;
if (val == 0)
val = 12;
else if (val > 11)
val++;
printf ("SiS 5591 status: CRTC %d PCICLK, ", val);
val = (word40[2] >> 8) & 0x7;
if (val == 0)
val = 8 ;
else if (val > 6)
val = 12;
printf ("CATC %d PCICLK, applies to all IDE devices\n", val);
} else {
printf ("SiS 5591 status: CRTC and CATC timings are per device, taken from DRTC and DATC\n");
}
printf ("SiS 5591 status: burst cycles %s, fast post write control %s\n",
((word40[2] >> 16) & 0x80) ? "enabled" : "disabled",
((word40[2] >> 16) & 0x20) ? "enabled" : "disabled");
}
val = DRTC & 0xf;
if (val == 0)
val = 12;
else if (val > 11)
val++;
printf ("SiS 5591 status: %s drive %d DRTC %d PCICLK,",
unitno < 2 ? "primary" : "secondary",
unitno & 1,
val);
val = DATC & 0x7;
if (val == 0)
val = 8 ;
else if (val > 6)
val = 12;
printf (" DATC %d PCICLK\n", val);
printf ("SiS 5591 status: %s drive %d Ultra DMA %s",
unitno < 2 ? "primary" : "secondary",
unitno & 1,
(DATC & 0x80) ? "disabled\n" : "enabled");
if ((DATC & 0x80) == 0)
printf (", %d PCICLK data out\n", ((DATC >> 5) & 0x3) + 1);
printf ("SiS 5591 status: %s drive %d postwrite %s, prefetch %s prefetch count is %d\n",
unitno < 2 ? "primary" : "secondary",
unitno & 1,
((word40[2] >> (28 + unitno)) & 1) ? "enabled" : "disabled",
((word40[2] >> (24 + unitno)) & 1) ? "enabled" : "disabled",
(word40[3] >> (16 * ctlr)) & 0xffff);
printf ("SiS 5591 status: %s drive %d has%s been configured for DMA\n",
unitno < 2 ? "primary" : "secondary",
unitno & 1,
(inb(iobase_bm + BMISTA_PORT) & ((unit == 0) ? BMISTA_DMA0CAP : BMISTA_DMA1CAP)) ?
" " : " not");
}
static int
sis_5591_dmainit(struct ide_pci_cookie *cookie,
struct wdparams *wp,
int(*wdcmd)(int, void *),
void *wdinfo)
{
int r;
unsigned int workword, new, mask;
int ctlr, unit;
int iobase_bm;
pcici_t tag;
int unitno;
unit = cookie->unit;
ctlr = cookie->ctlr;
iobase_bm = cookie->iobase_bm;
tag = cookie->tag;
unitno = ctlr * 2 + unit;
if (udma_mode(wp) >= 2) {
workword = pci_conf_read(tag, ctlr * 4 + 0x40);
/* These settings are a little arbitrary. They're taken from my
* system, where the BIOS has already set the values, but where
* we don't detect that we're initialized because the
* BMISTA_DMA?CAP values aren't set by the BIOS.
* 0x8000 turns on UDMA
* 0x2000 sets UDMA cycle time to 2 PCI clocks for data out
* 0x0300 sets DATC to 3 PCI clocks
* 0x0001 sets DRTC to 1 PCI clock
*/
if (unit) {
mask = 0x0000ffff;
new = 0xa3010000;
} else {
mask = 0xffff0000;
new = 0x0000a301;
}
workword &= mask;
workword |= new;
pci_conf_write(tag, ctlr * 4 + 0x40, workword);
outb(iobase_bm + BMISTA_PORT,
(inb(iobase_bm + BMISTA_PORT) | ((unit == 0) ? BMISTA_DMA0CAP : BMISTA_DMA1CAP)));
if (bootverbose)
printf("SiS 5591 dmainit: %s drive %d setting ultra DMA mode 2\n",
unitno < 2 ? "primary" : "secondary",
unitno & 1);
r = wdcmd(WDDMA_UDMA2, wdinfo);
if (!r) {
printf("SiS 5591 dmainit: %s drive %d setting DMA mode failed\n",
unitno < 2 ? "primary" : "secondary",
unitno & 1);
return 0;
}
if (bootverbose)
sis_5591_status(cookie);
return 1;
}
/* otherwise, try and program it for MW DMA mode 2 */
else if (mwdma_mode(wp) >= 2 && pio_mode(wp) >= 4) {
workword = pci_conf_read(tag, ctlr * 4 + 0x40);
/* These settings are a little arbitrary. They're taken from my
* system, where the BIOS has already set the values, but where
* we don't detect that we're initialized because the
* BMISTA_DMA?CAP values aren't set by the BIOS.
* 0x0300 sets DATC to 3 PCI clocks
* 0x0001 sets DRTC to 1 PCI clock
*/
if (unit) {
mask = 0x0000ffff;
new = 0x03010000;
} else {
mask = 0xffff0000;
new = 0x00000301;
}
workword &= mask;
workword |= new;
pci_conf_write(tag, ctlr * 4 + 0x40, workword);
outb(iobase_bm + BMISTA_PORT,
(inb(iobase_bm + BMISTA_PORT) | ((unit == 0) ? BMISTA_DMA0CAP : BMISTA_DMA1CAP)));
/* Set multiword DMA mode 2 on drive */
if (bootverbose)
printf("SiS 5591 dmainit: %s drive %d setting multiword DMA mode 2\n",
unitno < 2 ? "primary" : "secondary",
unitno & 1);
r = wdcmd(WDDMA_MDMA2, wdinfo);
if (!r) {
printf("SiS 5591 dmainit: %s drive %d setting DMA mode failed\n",
unitno < 2 ? "primary" : "secondary",
unitno & 1);
return 0;
}
if (bootverbose)
sis_5591_status(cookie);
return 1;
}
return 0;
}
static struct vendor_fns vs_sis_5591 =
{
sis_5591_dmainit,
sis_5591_status
};
/* Generic SFF-8038i code-- all code below here, except for PCI probes,
* more or less conforms to the SFF-8038i spec as extended for PCI.
* There should be no code that goes beyond that feature set below.
*/
/* XXX mkcookie is overloaded with too many parameters */
static struct ide_pci_cookie *
mkcookie(int iobase_wd,
int ctlr,
int unit,
int iobase_bm,
pcici_t tag,
pcidi_t type,
struct vendor_fns *vp,
int altiobase_wd)
{
struct ide_pci_cookie *cp;
cp = malloc(sizeof *cp, M_DEVBUF, M_NOWAIT);
if (!cp) return 0;
cp->iobase_wd = iobase_wd;
cp->ctlr = ctlr;
cp->unit = unit;
cp->tag = tag;
cp->type = type;
cp->iobase_bm = iobase_bm;
cp->altiobase_wd = altiobase_wd;
bcopy(vp, &cp->vs, sizeof(struct vendor_fns));
if (!prdbuf) {
prdbuf = malloc(PRD_ALLOC_SIZE, M_DEVBUF, M_NOWAIT);
if (!prdbuf) {
FREE(cp, M_DEVBUF);
return 0;
}
if (((int)prdbuf >> PAGE_SHIFT) ^
(((int)prdbuf + PRD_ALLOC_SIZE - 1) >> PAGE_SHIFT)) {
printf("ide_pci: prdbuf straddles page boundary, no DMA\n");
FREE(cp, M_DEVBUF);
FREE(prdbuf, M_DEVBUF);
return 0;
}
prdbuf_next = prdbuf;
}
if (((char *)prdbuf_next + PRD_BUF_SIZE) >
((char *)prdbuf + PRD_ALLOC_SIZE)) {
printf("ide_pci: mkcookie %04x:%d: no more space for PRDs, no DMA\n",
iobase_wd, unit);
FREE(cp, M_DEVBUF);
return 0;
}
cp->prd = prdbuf_next;
(char *)prdbuf_next += PRD_BUF_SIZE;
LIST_INSERT_HEAD(&softc.cookies, cp, le);
return cp;
}
static const char *
ide_pci_probe(pcici_t tag, pcidi_t type)
{
u_long data;
data = pci_conf_read(tag, PCI_CLASS_REG);
if ((data & PCI_CLASS_MASK) == PCI_CLASS_MASS_STORAGE &&
((data & PCI_SUBCLASS_MASK) == 0x00010000 ||
((data & PCI_SUBCLASS_MASK) == 0x00040000))) {
if (type == 0x71118086)
return ("Intel PIIX4 Bus-master IDE controller");
if (type == 0x70108086)
return ("Intel PIIX3 Bus-master IDE controller");
if (type == 0x12308086)
return ("Intel PIIX Bus-master IDE controller");
if (type == PROMISE_ULTRA33)
return ("Promise Ultra/33 IDE controller");
if (type == 0x05711106)
return ("VIA 82C586x (Apollo) Bus-master IDE controller");
if (type == 0x01021078)
return ("Cyrix 5530 Bus-master IDE controller");
if (type == 0x522910b9)
return ("Acer Aladdin IV/V (M5229) Bus-master IDE controller");
if (type == 0x55131039)
return ("SiS 5591 Bus-master IDE Controller");
if (type == CMD640B_PCI_ID)
return "CMD 640B IDE controller";
if (data & 0x8000)
return ("PCI IDE controller (busmaster capable)");
else
return ("PCI IDE controller (not busmaster capable)");
};
return ((char*)0);
}
static void
ide_pci_attach(pcici_t tag, int unit)
{
u_long class = 0, cmd;
int bmista_1, bmista_2;
int iobase_wd_1, iobase_wd_2, iobase_bm_1, iobase_bm_2;
int altiobase_wd_1, altiobase_wd_2;
struct vendor_fns *vp;
pcidi_t type;
struct ide_pci_cookie *cookie;
int ctlridx;
ctlridx = unit * 2;
/* set up vendor-specific stuff */
type = pci_conf_read(tag, PCI_ID_REG);
if (type == CMD640B_PCI_ID) {
wdc_pci(Q_CMD640B);
return;
}
if (type != PROMISE_ULTRA33) {
/* is it busmaster capable? bail if not */
class = pci_conf_read(tag, PCI_CLASS_REG);
if (!(class & 0x8000)) {
return;
}
/* is it enabled and is busmastering turned on? */
cmd = pci_conf_read(tag, PCI_COMMAND_STATUS_REG);
if ((cmd & 5) != 5) {
return;
}
}
switch (type) {
case 0x71118086:
case 0x70108086:
case 0x12308086:
/* Intel PIIX, PIIX3, PIIX4 */
vp = &vs_intel_piix;
break;
case 0x5711106:
/* VIA Apollo chipset family */
vp = &vs_via_571;
break;
case PROMISE_ULTRA33:
/* Promise controllers */
vp = &vs_promise;
break;
case 0x01021078: /* cyrix 5530 */
printf("cyrix 5530\n");
vp = &vs_cyrix_5530;
break;
case 0x522910B9: /* Acer Aladdin IV/V (M5229) */
vp = &vs_acer;
break;
case 0x55131039: /* SiS 5591 */
vp = &vs_sis_5591;
break;
default:
/* everybody else */
vp = &vs_generic;
break;
}
if (type != PROMISE_ULTRA33) {
if ((class & 0x100) == 0) {
iobase_wd_1 = IO_WD1;
altiobase_wd_1 = iobase_wd_1 + wd_altsts;
} else {
iobase_wd_1 = pci_conf_read(tag, 0x10) & 0xfffc;
altiobase_wd_1 = pci_conf_read(tag, 0x14) & 0xfffc;
}
if ((class & 0x400) == 0) {
iobase_wd_2 = IO_WD2;
altiobase_wd_2 = iobase_wd_2 + wd_altsts;
} else {
iobase_wd_2 = pci_conf_read(tag, 0x18) & 0xfffc;
altiobase_wd_2 = pci_conf_read(tag, 0x1c) & 0xfffc;
}
} else {
iobase_wd_1 = pci_conf_read(tag, 0x10) & 0xfffc;
altiobase_wd_1 = pci_conf_read(tag, 0x14) & 0xfffc;
iobase_wd_2 = pci_conf_read(tag, 0x18) & 0xfffc;
altiobase_wd_2 = pci_conf_read(tag, 0x1c) & 0xfffc;
}
iobase_bm_1 = pci_conf_read(tag, 0x20) & 0xfffc;
if (iobase_bm_1 == 0) {
printf("ide_pci: BIOS has not configured busmaster"
"I/O address,\n ide_pci: giving up\n");
return;
}
iobase_bm_2 = iobase_bm_1 + SFF8038_CTLR_1;
wddma[unit].wdd_candma = ide_pci_candma;
wddma[unit].wdd_dmainit = ide_pci_dmainit;
if (type == 0x01021078 /*CYRIX_5530*/)
wddma[unit].wdd_dmaverify = cyrix_5530_dmaverify;
else
wddma[unit].wdd_dmaverify = ide_pci_dmaverify;
wddma[unit].wdd_dmaprep = ide_pci_dmasetup;
wddma[unit].wdd_dmastart = ide_pci_dmastart;
wddma[unit].wdd_dmadone = ide_pci_dmadone;
wddma[unit].wdd_dmastatus = ide_pci_status;
wddma[unit].wdd_iobase = ide_pci_iobase;
wddma[unit].wdd_altiobase = ide_pci_altiobase;
bmista_1 = inb(iobase_bm_1 + BMISTA_PORT);
bmista_2 = inb(iobase_bm_2 + BMISTA_PORT);
if (!ide_pci_softc_cookies_initted) {
LIST_INIT(&softc.cookies);
ide_pci_softc_cookies_initted = 1;
}
if (iobase_wd_1 != 0) {
cookie = mkcookie(iobase_wd_1,
ctlridx,
0,
iobase_bm_1,
tag,
type,
vp,
altiobase_wd_1);
if (bootverbose)
vp->vendor_status(cookie);
cookie = mkcookie(iobase_wd_1,
ctlridx,
1,
iobase_bm_1,
tag,
type,
vp,
altiobase_wd_1);
if (bootverbose) {
vp->vendor_status(cookie);
bmista_1 = inb(iobase_bm_1 + BMISTA_PORT);
bmista_2 = inb(iobase_bm_2 + BMISTA_PORT);
printf("ide_pci: busmaster 0 status: %02x from port: %08x\n",
bmista_1, iobase_bm_1+BMISTA_PORT);
if (bmista_1 & BMISTA_DMA0CAP)
printf("ide_pci: ide0:0 has been configured for DMA by BIOS\n");
if (bmista_1 & BMISTA_DMA1CAP)
printf("ide_pci: ide0:1 has been configured for DMA by BIOS\n");
}
}
if (iobase_wd_2 != 0) {
cookie = mkcookie(iobase_wd_2,
ctlridx + 1,
0,
iobase_bm_2,
tag,
type,
vp,
altiobase_wd_2);
if (bootverbose)
vp->vendor_status(cookie);
cookie = mkcookie(iobase_wd_2,
ctlridx + 1,
1,
iobase_bm_2,
tag,
type,
vp,
altiobase_wd_2);
if (bootverbose) {
vp->vendor_status(cookie);
bmista_1 = inb(iobase_bm_1 + BMISTA_PORT);
bmista_2 = inb(iobase_bm_2 + BMISTA_PORT);
printf("ide_pci: busmaster 1 status: %02x from port: %08x\n",
bmista_2, iobase_bm_2+BMISTA_PORT);
if (bmista_2 & BMISTA_DMA0CAP)
printf("ide_pci: ide1:0 has been configured for DMA by BIOS\n");
if (bmista_2 & BMISTA_DMA1CAP)
printf("ide_pci: ide1:1 has been configured for DMA by BIOS\n");
}
}
}
static u_long ide_pci_count;
static struct pci_device ide_pci_device = {
"ide_pci",
ide_pci_probe,
ide_pci_attach,
&ide_pci_count,
0
};
COMPAT_PCI_DRIVER(ide_pci, ide_pci_device);
/*
* Return a cookie if we may be able to do DMA on the specified
* (iobase_wd, ctlr, unit).
*/
static void *
ide_pci_candma(int iobase_wd, int ctlr, int unit)
{
struct ide_pci_cookie *cp;
cp = softc.cookies.lh_first;
while(cp) {
if (cp->ctlr == ctlr && cp->unit == unit &&
((iobase_wd == 0) || (cp->iobase_wd == iobase_wd)))
break;
cp = cp->le.le_next;
}
return cp;
}
/*
* Initialize controller and drive for DMA operation, including timing modes.
* Uses data passed from the wd driver and a callback function to initialize
* timing modes on the drive.
*/
static int
ide_pci_dmainit(void *cookie,
struct wdparams *wp,
int(*wdcmd)(int, void *),
void *wdinfo)
{
struct ide_pci_cookie *cp = cookie;
/*
* If the controller status indicates that DMA is configured already,
* we flounce happily away
*/
if (inb(cp->iobase_bm + BMISTA_PORT) &
((cp->unit == 0) ? BMISTA_DMA0CAP : BMISTA_DMA1CAP))
return 1;
/* We take a stab at it with device-dependent code */
return(cp->vs.vendor_dmainit(cp, wp, wdcmd, wdinfo));
}
/*
* Verify that controller can handle a dma request for cp. Should
* not affect any hardware or driver state.
*/
static int
ide_pci_dmaverify(void *xcp, char *vaddr, u_long count, int dir)
{
int badfu;
/*
* check for nonaligned or odd-length Stuff
*/
badfu = ((unsigned int)vaddr & 1) || (count & 1);
#ifdef DIAGNOSTIC
if (badfu) {
printf("ide_pci: dmaverify odd vaddr or length, ");
printf("vaddr = %p length = %08lx\n", (void *)vaddr, count);
}
#endif
return (!badfu);
}
/*
* Set up DMA for cp. It is the responsibility of the caller
* to ensure that the controller is idle before this routine
* is called.
*/
static int
ide_pci_dmasetup(void *xcp, char *vaddr, u_long vcount, int dir)
{
struct ide_pci_cookie *cp = xcp;
struct ide_pci_prd *prd;
int i;
u_long firstpage;
u_long prd_base, prd_count;
u_long nbase, ncount, nend;
int iobase_bm;
u_long count;
prd = cp->prd;
count = vcount;
i = 0;
iobase_bm = cp->iobase_bm;
if (count == 0) {
printf("ide_pci: dmasetup 0-length transfer, ");
printf("vaddr = %p length = %08lx\n", (void *)vaddr, count);
return 1;
}
/* Generate first PRD entry, which may be non-aligned. */
firstpage = PAGE_SIZE - ((uintptr_t)vaddr & PAGE_MASK);
prd_base = vtophys(vaddr);
prd_count = MIN(count, firstpage);
vaddr += prd_count;
count -= prd_count;
/*
* Step through virtual pages.
* Note that it is not worth trying to coalesce pages that are
* next to each other physically, and some DMA engines (e.g.
* Cyrix Cx5530) actually blow up if you do.
*/
while (count) {
nbase = vtophys(vaddr);
ncount = MIN(count, PAGE_SIZE);
nend = nbase + ncount;
prd[i].prd_base = prd_base;
prd[i].prd_count = (prd_count & 0xffff);
i++;
if (i >= PRD_MAX_SEGS) {
printf("wd82371: too many segments in PRD table\n");
return 1;
}
prd_base = nbase;
prd_count = ncount;
vaddr += ncount;
count -= ncount;
}
/* Write last PRD entry. */
prd[i].prd_base = prd_base;
prd[i].prd_count = (prd_count & 0xffff) | PRD_EOT_BIT;
/* Set up PRD base register */
outl(iobase_bm + BMIDTP_PORT, vtophys(prd));
/* Set direction of transfer */
outb(iobase_bm + BMICOM_PORT, (dir == B_READ) ? BMICOM_READ_WRITE : 0);
/* Clear interrupt and error bits */
outb(iobase_bm + BMISTA_PORT,
(inb(iobase_bm + BMISTA_PORT)
| (BMISTA_INTERRUPT | BMISTA_DMA_ERROR)));
return 0;
}
static void
ide_pci_dmastart(void *xcp)
{
struct ide_pci_cookie *cp = xcp;
int iobase_bm;
iobase_bm = cp->iobase_bm;
outb(iobase_bm + BMICOM_PORT,
inb(iobase_bm + BMICOM_PORT) | BMICOM_STOP_START);
}
static int
ide_pci_dmadone(void *xcp)
{
struct ide_pci_cookie *cp = xcp;
int iobase_bm, status;
status = ide_pci_status(xcp);
iobase_bm = cp->iobase_bm;
outb(iobase_bm + BMICOM_PORT,
inb(iobase_bm + BMICOM_PORT) & ~BMICOM_STOP_START);
return status;
}
static int
ide_pci_status(void *xcp)
{
int iobase_bm, status, bmista;
status = 0;
iobase_bm = ((struct ide_pci_cookie *)xcp)->iobase_bm;
bmista = inb(iobase_bm + BMISTA_PORT);
if (bmista & BMISTA_INTERRUPT)
status |= WDDS_INTERRUPT;
if (bmista & BMISTA_DMA_ERROR)
status |= WDDS_ERROR;
if (bmista & BMISTA_DMA_ACTIVE)
status |= WDDS_ACTIVE;
return status;
}
static int
ide_pci_altiobase(void *xcp)
{
struct ide_pci_cookie *cp = xcp;
if (cp == 0) {
return 0;
} else {
return cp->altiobase_wd;
}
}
static int
ide_pci_iobase(void *xcp)
{
struct ide_pci_cookie *cp = xcp;
if (cp == 0) {
return 0;
} else {
return cp->iobase_wd;
}
}
#endif
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