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freebsd-skq/sys/pci/ide_pci.c
Bruce Evans 1fd0b0588f Removed unused #includes.
1997-08-02 14:33:27 +00:00

814 lines
21 KiB
C
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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.
*
* From: wd82371.c,v 1.5.2.1 1996/11/16 21:19:51 phk Exp $
* $Id: ide_pci.c,v 1.1 1997/07/29 12:57:09 sos Exp $
*/
#include "pci.h"
#if NPCI > 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>
#include <pci/pcivar.h>
#include <pci/pcireg.h>
#include <pci/ide_pcireg.h>
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 */
(int iobase_wd,
int unit,
int iobase_bm,
pcici_t tag,
pcidi_t type);
};
/*
* 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 unit;
int iobase_bm; /* SFF-8038 control registers */
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(int iobase_wd,
int unit,
int iobase_bm,
pcici_t tag,
pcidi_t type);
static void
via_571_status(int iobase_wd,
int unit,
int iobase_bm,
pcici_t tag,
pcidi_t type);
static void
intel_piix_dump_drive(char *ctlr,
int sitre,
int word40,
int word44,
int drive);
static void
intel_piix_status(int iobase_wd,
int unit,
int iobase_bm,
pcici_t tag,
pcidi_t type);
static struct ide_pci_cookie *
mkcookie(int iobase_wd,
int unit,
int iobase_bm,
pcici_t tag,
pcidi_t type,
struct vendor_fns *vp);
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_timing(void *, int);
static struct ide_pci_softc softc;
static int ide_pci_softc_cookies_initted = 0;
/*
* 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.
*/
/* Generic busmastering PCI-IDE */
static int
generic_dmainit(struct ide_pci_cookie *cookie,
struct wdparams *wp,
int(*wdcmd)(int, void *),
void *wdinfo)
{
int mode, r;
/*
* XXX 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. this code may eventually be replaced
* by gunk in the hw-specific code to deal with specific
* controllers.
*/
/* XXX way too sick and twisted conditional */
if (!((((wp->wdp_atavalid & 2) == 2) &&
((wp->wdp_dmamword & 0x404) == 0x404) &&
((wp->wdp_eidepiomodes & 2) == 2)) ||
(((wp->wdp_atavalid & 4) == 4) &&
(wp->wdp_udmamode == 4))))
return 0;
#if 0
/*
* XXX flesh this out into real code that actually
* does something-- this was just testing gunk.
*/
if (((wp->wdp_atavalid & 0x4) == 0x4) &&
(wp->wdp_udmamode == 4)) {
printf("UDMA mode\n");
mode = 0x42; /* XXX where's the #defines... */
}
else {
printf("MDMA mode\n");
mode = 0x24;
}
r = wdcmd(mode, wdinfo);
printf("dmainit out like we expect\n");
if (!r)
return 0;
#endif
return 1;
}
static void
generic_status(int iobase_wd,
int unit,
int iobase_bm,
pcici_t tag,
pcidi_t type)
{
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(int iobase_wd,
int unit,
int iobase_bm,
pcici_t tag,
pcidi_t type)
{
unsigned int word40[5];
int i;
/* XXX how to handle four calls for one controller? */
if (iobase_wd != 0x1f0 || unit != 0)
return;
for (i=0; i<5; i++) {
word40[i] = pci_conf_read(tag, i * 4 + 0x40);
}
printf("via_571_status: Primary IDE prefetch/postwrite %s/%s\n",
word40[0] & 0x8000 ? "enabled" : "disabled",
word40[0] & 0x4000 ? "enabled" : "disabled");
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: Master %d read/%d write IRDY# wait states\n",
(word40[1] & 0x40) >> 6,
(word40[1] & 0x20) >> 5);
printf("via_571_status: busmaster status read retry %s\n",
(word40[1] & 0x10) ? "enabled" : "disabled");
for (i=0; i<4; i++)
printf("via_571_status: %s drive %d setup=%d active=%d recovery=%d\n",
i < 2 ? "primary" : "secondary",
i & 1,
((word40[3] >> ((3 - i) * 2)) & 3) + 1,
((word40[2] >> (((3 - i) * 8) + 4)) & 0x0f) + 1,
((word40[2] >> ((3 - i) * 8)) & 0x0f) + 1);
/* XXX could go on and do UDMA status for '586B */
}
static struct vendor_fns vs_via_571 =
{
generic_dmainit,
via_571_status
};
/* Intel PIIX, PIIX3, and PIIX4 IDE controller subfunctions */
static void
intel_piix_dump_drive(char *ctlr,
int sitre,
int word40,
int word44,
int drive)
{
char *ms;
if (!sitre)
ms = "master/slave";
else if (drive == 0)
ms = "master";
else
ms = "slave";
if (sitre || drive == 0)
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)" : "" );
/* XXX extend to dump 82371AB's UltraDMA modes */
}
static void
intel_piix_status(int iobase_wd,
int unit,
int iobase_bm,
pcici_t tag,
pcidi_t type)
{
unsigned int word40, word44;
int sitre;
/* XXX how to handle four calls for one controller? */
if (iobase_wd != 0x1f0 || unit != 0)
return;
word40 = pci_conf_read(tag, 0x40);
word44 = pci_conf_read(tag, 0x44);
sitre = word40 & 0x4000;
intel_piix_dump_drive("primary", sitre, word40 & 0xffff, word44 & 0x0f, 0);
intel_piix_dump_drive("primary", sitre, word40 & 0xffff, word44 & 0x0f, 1);
intel_piix_dump_drive("secondary",
sitre,
(word40 >> 16) & 0xffff,
(word44 >> 4) & 0x0f,0);
intel_piix_dump_drive("secondary",
sitre,
(word40 >> 16) & 0xffff,
(word44 >> 4) & 0x0f,1);
}
static struct vendor_fns vs_intel_piix =
{
generic_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 unit,
int iobase_bm,
pcici_t tag,
pcidi_t type,
struct vendor_fns *vp)
{
struct ide_pci_cookie *cp;
cp = malloc(sizeof *cp, M_DEVBUF, M_NOWAIT);
if (!cp) return cp;
cp->iobase_wd = iobase_wd;
cp->unit = unit;
cp->tag = tag;
cp->type = type;
cp->iobase_bm = iobase_bm;
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");
FREE(cp, M_DEVBUF);
FREE(prdbuf, M_DEVBUF);
return 0;
}
prdbuf_next = prdbuf;
}
cp->prd = prdbuf_next;
(char *)prdbuf_next += PRD_BUF_SIZE;
if ((char *)prdbuf_next > ((char *)prdbuf + PRD_ALLOC_SIZE))
panic("ide_pci: too many prdbufs allocated");
if (bootverbose)
printf("ide_pci: mkcookie %04x:%d: PRD vstart = %08x vend = %08x\n",
iobase_wd, unit, (int)cp->prd, ((int)cp->prd)+PRD_BUF_SIZE);
LIST_INSERT_HEAD(&softc.cookies, cp, le);
return cp;
}
static char *
ide_pci_probe(pcici_t tag, pcidi_t type)
{
int data = pci_conf_read(tag, PCI_CLASS_REG);
switch (data & PCI_CLASS_MASK) {
case PCI_CLASS_MASS_STORAGE:
if ((data & PCI_SUBCLASS_MASK) == 0x00010000) {
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 == 0x05711106)
return ("VIA 82C586x (Apollo) Bus-master IDE controller");
if (data & 0x8000)
return ("PCI IDE controller (busmaster capable)");
/*
* XXX leave this out for now, to allow CMD640B hack to work. said
* hack should be better integrated, or something.
*/
#if 0
else
return ("PCI IDE controller (not busmaster capable)");
#endif
}
};
return ((char*)0);
}
static void
ide_pci_attach(pcici_t tag, int unit)
{
u_long idetm;
int class;
int bmista;
int iobase_wd, iobase_bm;
int cmd;
struct vendor_fns *vp;
pcidi_t type;
if (unit) return;
/* 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;
/* set up vendor-specific stuff */
type = pci_conf_read(tag, PCI_ID_REG);
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;
default:
/* everybody else */
vp = &vs_generic;
break;
}
iobase_wd = (class & 0x100) ?
(pci_conf_read(tag, 0x10) & 0xfffc) :
0x1f0;
iobase_bm = pci_conf_read(tag, 0x20) & 0xfffc;
if (!ide_pci_softc_cookies_initted) {
LIST_INIT(&softc.cookies);
ide_pci_softc_cookies_initted = 1;
}
bmista = inb(iobase_bm + BMISTA_PORT);
if (bootverbose)
printf("ide_pci: busmaster 0 status: %02x from port: %08x\n",
bmista, iobase_bm+BMISTA_PORT);
if (!(bmista & BMISTA_DMA0CAP))
printf("ide_pci: warning, ide0:0 not configured for DMA?\n");
mkcookie(iobase_wd, 0, iobase_bm, tag, type, vp);
if (bootverbose)
vp->vendor_status(iobase_wd, 0, iobase_bm, tag, type);
if (!(bmista & BMISTA_DMA1CAP))
printf("ide_pci: warning, ide0:1 not configured for DMA?\n");
mkcookie(iobase_wd, 1, iobase_bm, tag, type, vp);
if (bootverbose)
vp->vendor_status(iobase_wd, 1, iobase_bm, tag, type);
if (bmista & BMISTA_SIMPLEX) {
printf("ide_pci: primary is simplex-only, no DMA on secondary\n");
} else {
iobase_wd = (class & 0x400) ?
(pci_conf_read(tag, 0x10) & 0xfffc) :
0x170;
iobase_bm += SFF8038_CTLR_1;
bmista = inb(iobase_bm + BMISTA_PORT);
if (bootverbose)
printf("ide_pci: busmaster 1 status: %02x from port: %08x\n",
bmista, iobase_bm+BMISTA_PORT);
if (bmista & BMISTA_SIMPLEX) {
printf("ide_pci: secondary is simplex-only, no DMA on secondary\n");
} else {
if (!(bmista & BMISTA_DMA0CAP))
printf("ide_pci: warning, ide1:0 not configured for DMA?\n");
mkcookie(iobase_wd, 0, iobase_bm, tag, type, vp);
if (bootverbose)
vp->vendor_status(iobase_wd, 0, iobase_bm, tag, type);
if (!(bmista & BMISTA_DMA1CAP))
printf("ide_pci: warning, ide1:1 not configured for DMA?\n");
mkcookie(iobase_wd, 1, iobase_bm, tag, type, vp);
if (bootverbose)
vp->vendor_status(iobase_wd, 1, iobase_bm, tag, type);
}
}
wddma.wdd_candma = ide_pci_candma;
wddma.wdd_dmainit = ide_pci_dmainit;
wddma.wdd_dmaverify = ide_pci_dmaverify;
wddma.wdd_dmaprep = ide_pci_dmasetup;
wddma.wdd_dmastart = ide_pci_dmastart;
wddma.wdd_dmadone = ide_pci_dmadone;
wddma.wdd_dmastatus = ide_pci_status;
}
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 && 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;
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);
#if 1
if (badfu) {
printf("ide_pci: dmaverify odd vaddr or length, ");
printf("vaddr = %08x length = %08x\n", (int)vaddr, count);
}
#endif
/*
* XXX should perhaps be checking that length of generated table
* does not exceed space available, but that Would Be Hairy
*/
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 count, int dir)
{
struct ide_pci_cookie *cp = xcp;
struct ide_pci_prd *prd;
int i;
u_long pgresid;
int iobase_bm;
static int trashmore;
static int *trashmore_p = 0;
prd = cp->prd;
i = 0;
iobase_bm = cp->iobase_bm;
/*
* ensure that 0-length transfers get a PRD that won't smash much
*/
if (!trashmore_p)
trashmore_p = (void *)vtophys(&trashmore);
prd[0].prd_base = (unsigned int)trashmore_p;
prd[0].prd_count = 0x80000002;
if (count == 0) {
printf("ide_pci: dmasetup 0-length transfer, ");
printf("vaddr = %08x length = %08x\n", (int)vaddr, count);
}
/*
* XXX the PRD generation code is somewhat ugly and will not
* port easily to big endian systems.
*
* but it works.
*/
/*
* Deal with transfers that don't start on a page
* boundary.
*/
pgresid = (u_long)vaddr % PAGE_SIZE;
if (pgresid) {
prd[i].prd_base = vtophys(vaddr);
if (count >= (PAGE_SIZE - pgresid))
prd[i].prd_count = PAGE_SIZE - pgresid;
else
prd[i].prd_count = count;
vaddr += prd[i].prd_count;
count -= prd[i].prd_count;
i++;
}
/*
* We have now ensured that vaddr is page-aligned, so just
* step through the pages adding each one onto the list.
*/
while(count) {
u_long phys, n;
phys = vtophys(vaddr);
n = ((count > PAGE_SIZE) ? PAGE_SIZE : count);
/*
* If the current page is physically contiguous with
* whatever we have in the previous PRD, just tack it
* onto the end.
* CAVEAT: due to a hardware deficiency, PRDs
* cannot cross a 64K boundary.
* XXX should we bother with this collapsing? scattered
* pages appear to be the common case anyway.
*/
if (i > 0
&& (phys == prd[i - 1].prd_base + prd[i - 1].prd_count)
&& ((prd[i - 1].prd_base & 0xffff)
+ prd[i - 1].prd_count + n) <= 65535) {
prd[i - 1].prd_count += n;
} else {
prd[i].prd_base = phys;
prd[i].prd_count = n;
i++;
if (i >= PRD_MAX_SEGS)
panic("wd82371: too many segments\n");
}
count -= n;
vaddr += n;
}
/* put a sign at the edge of the cliff... */
prd[(i>0) ? (i-1) : 0].prd_count |= PRD_EOT_BIT;
if (i == 0)
printf("ide_pci: dmasetup 0-length PRD???\n");
/* Set up PRD base register */
outl(iobase_bm + BMIDTP_PORT, vtophys(prd));
/* Set direction of transfer */
if (dir == B_READ) {
outb(iobase_bm + BMICOM_PORT, BMICOM_READ_WRITE);
} else {
outb(iobase_bm + BMICOM_PORT, 0);
}
/* Clear interrupt and error bits */
outb(iobase_bm + BMISTA_PORT,
(inb(iobase_bm + BMISTA_PORT)
| (BMISTA_INTERRUPT | BMISTA_DMA_ERROR)));
/* printf("dma enable: iobase_bm = %08x command/status = %08x pointer = %08x\n", iobase_bm, inl(iobase_bm + BMICOM_PORT), inl(iobase_bm + BMIDTP_PORT)); */
/* printf("P"); */
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);
/* printf("["); */
}
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);
/* printf("]"); */
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);
/* printf("dmastatus: iobase_bm = %08x status = %02x command/status = %08x pointer = %08x\n", iobase_bm, bmista, inl(iobase_bm + BMICOM_PORT), inl(iobase_bm + BMIDTP_PORT)); */
if (bmista & BMISTA_INTERRUPT)
status |= WDDS_INTERRUPT;
if (bmista & BMISTA_DMA_ERROR)
status |= WDDS_ERROR;
if (bmista & BMISTA_DMA_ACTIVE)
status |= WDDS_ACTIVE;
/* printf( (bmista == BMISTA_INTERRUPT)? "?":"!"); */
return status;
}
#endif /* NPCI > 0 */
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