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freebsd-nq/sys/pci/ide_pci.c
Mike Smith fc28edf53e Check for DMA capbility is against unit,not controller. 
Submitted by:	Lee Cremeans <lee@st-lcremean.tidalwave.net>
1998-12-21 08:55:56 +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.
*
* $Id: ide_pci.c,v 1.18 1998/12/14 05:49:04 dillon Exp $
*/
#include "pci.h"
#if NPCI > 0
#include "opt_wd.h"
#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
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 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
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);
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);
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)
{
int r;
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 = 0x80000000 >> (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("intel_piix_dmainit: setting ultra DMA mode 2\n");
r = wdcmd(WDDMA_UDMA2, wdinfo);
if (!r) {
printf("intel_piix_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("intel_piix_dmainit: setting multiword DMA mode 2\n");
r = wdcmd(WDDMA_MDMA2, wdinfo);
if (!r) {
printf("intel_piix_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 &= ~(3 << (cookie->ctlr * 2 + 12));
workword |= 3 << (cookie->ctlr * 2 + 12);
/* 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
};
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)
{
int r;
/* 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");
r = wdcmd(WDDMA_UDMA2, wdinfo);
if (!r) {
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");
r = wdcmd(WDDMA_MDMA2, wdinfo);
if (!r) {
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");
r = wdcmd(WDDMA_MDMA2, wdinfo);
if (!r) {
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
};
/* 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 (data & 0x8000)
return ("PCI IDE controller (busmaster capable)");
#ifndef CMD640
/*
* XXX the CMD640B hack should be better integrated, or
* something.
*/
else
return ("PCI IDE controller (not busmaster capable)");
#endif
};
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 != 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;
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;
iobase_bm_2 = iobase_bm_1 + SFF8038_CTLR_1;
if (iobase_bm_1 == 0) {
printf("ide_pci: BIOS has not configured busmaster I/O address,\n\
ide_pci: giving up\n");
return;
}
wddma[unit].wdd_candma = ide_pci_candma;
wddma[unit].wdd_dmainit = ide_pci_dmainit;
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;
/*
* This code below is mighty bogus. The config entries for the
* isa_devtab_bio are plugged in before the standard ISA bios scan.
* This is our "hack" way to simulate a dynamic assignment of I/O
* addresses, from a PCI device to an ISA probe. Sorry :-).
*/
if (iobase_wd_1 != IO_WD1) {
struct isa_device *dvp, *dvp1, *dvup;
for( dvp = isa_devtab_bio;
dvp->id_id != 0;
dvp++) {
if ((dvp->id_driver == &wdcdriver) && (dvp->id_iobase == 0)) {
int biotabunit;
biotabunit = dvp->id_unit * 2;
dvp->id_iobase = iobase_wd_1;
dvp1 = dvp + 1;
dvp1->id_iobase = iobase_wd_2;
printf("ide_pci%d: adding drives to controller %d:",
unit, biotabunit);
for(dvup = isa_biotab_wdc;
dvup->id_id != 0;
dvup++) {
if (dvup->id_driver != &wdcdriver)
continue;
if (dvup->id_unit != biotabunit)
continue;
dvup->id_iobase = dvp->id_iobase;
printf(" %d", dvup->id_unit);
dvup++;
pci_map_int(tag, wdintr, (void *) dvp->id_unit, &bio_imask);
if (dvup->id_id == 0)
break;
if (dvup->id_unit == biotabunit + 1) {
dvup->id_iobase = dvp->id_iobase;
printf(" %d", dvup->id_unit);
dvup++;
if (dvup->id_id == 0) {
iobase_wd_2 = 0;
break;
}
}
if (dvup->id_unit == biotabunit + 2) {
pci_map_int(tag, wdintr, (void *) ((int) dvp->id_unit + 1), &bio_imask);
dvup->id_iobase = dvp1->id_iobase;
printf(" %d", dvup->id_unit);
dvup++;
if (dvup->id_id == 0) {
break;
}
}
if (dvup->id_unit == biotabunit + 3) {
pci_map_int(tag, wdintr, (void *) ((int) dvp->id_unit + 1), &bio_imask);
dvup->id_iobase = dvp1->id_iobase;
printf(" %d", dvup->id_unit);
}
break;
}
printf("\n");
break;
}
}
}
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);
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 (bmista_1 & BMISTA_SIMPLEX || bmista_2 & BMISTA_SIMPLEX) {
printf("ide_pci: controller is simplex, no DMA on secondary channel\n");
} else 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);
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
};
DATA_SET(pcidevice_set, ide_pci_device);
/*
* Return a cookie if we can do DMA on the specified (iobase_wd, unit).
*/
static void *
ide_pci_candma(int iobase_wd, int unit)
{
struct ide_pci_cookie *cp;
cp = softc.cookies.lh_first;
while(cp) {
if (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;
#ifdef DIAGNOSTIC
u_long checkcount;
#endif
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, coalescing as needed. */
while (count) {
nbase = vtophys(vaddr);
ncount = MIN(count, PAGE_SIZE);
nend = nbase + ncount;
/*
* Coalesce if physically contiguous and not crossing
* 64k boundary.
*/
if ((prd_base + prd_count == nbase) &&
((((nend - 1) ^ prd_base) & ~0xffff) == 0)) {
prd_count += ncount;
} else {
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;
#ifdef DIAGNOSTIC
/* sanity check the transfer for length and page-alignment, at least */
checkcount = 0;
for (i = 0;; i++) {
unsigned int modcount;
modcount = prd[i].prd_count & 0xffffe;
if (modcount == 0) modcount = 0x10000;
checkcount += modcount;
if (i != 0 && ((prd[i].prd_base & PAGE_MASK) != 0)) {
printf("ide_pci: dmasetup() diagnostic fails-- unaligned page\n");
return 1;
}
if (prd[i].prd_count & PRD_EOT_BIT)
break;
}
if (checkcount != vcount) {
printf("ide_pci: dmasetup() diagnostic fails-- bad length\n");
return 1;
}
#endif
/* 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)
{
struct ide_pci_cookie *cp = xcp;
int iobase_bm, status, bmista;
status = 0;
iobase_bm = cp->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
#endif /* NPCI > 0 */
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