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Convert ISP pci front end to CAM/bus space/dma.

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Convert ncr driver to CAM.
This commit is contained in:
Justin T. Gibbs 1998-09-15 10:06:23 +00:00
parent 27970de130
commit d720e6d5de
4 changed files with 1945 additions and 1772 deletions
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464
sys/dev/isp/isp_pci.c
View file

@ -1,5 +1,5 @@
/* $FreeBSD$ */
/* $Id: isp_pci.c,v 1.2 1998/07/13 09:53:09 bde Exp $ */
/* $Id: isp_pci.c,v 1.13 1998/09/08 01:24:58 mjacob Exp $ */
/*
* PCI specific probe and attach routines for Qlogic ISP SCSI adapters.
* FreeBSD Version.
@ -34,20 +34,34 @@
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <pci.h>
#if NPCI > 0
#include <dev/isp/isp_freebsd.h>
#include <dev/isp/asm_pci.h>
#include <sys/malloc.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include <vm/vm_extern.h>
#include <pci/pcireg.h>
#include <pci/pcivar.h>
#ifdef SCSI_CAM
#include <machine/bus_memio.h>
#include <machine/bus_pio.h>
#include <machine/bus.h>
#endif
static u_int16_t isp_pci_rd_reg __P((struct ispsoftc *, int));
static void isp_pci_wr_reg __P((struct ispsoftc *, int, u_int16_t));
static int isp_pci_mbxdma __P((struct ispsoftc *));
static int isp_pci_dmasetup __P((struct ispsoftc *, ISP_SCSI_XFER_T *,
ispreq_t *, u_int8_t *, u_int8_t));
#ifdef SCSI_CAM
static void
isp_pci_dmateardown __P((struct ispsoftc *, ISP_SCSI_XFER_T *, u_int32_t));
#else
#define isp_pci_dmateardown NULL
#endif
static void isp_pci_reset1 __P((struct ispsoftc *));
static void isp_pci_dumpregs __P((struct ispsoftc *));
@ -57,7 +71,7 @@ static struct ispmdvec mdvec = {
isp_pci_wr_reg,
isp_pci_mbxdma,
isp_pci_dmasetup,
NULL,
isp_pci_dmateardown,
NULL,
isp_pci_reset1,
isp_pci_dumpregs,
@ -65,8 +79,8 @@ static struct ispmdvec mdvec = {
ISP_CODE_LENGTH,
ISP_CODE_ORG,
ISP_CODE_VERSION,
BIU_PCI_CONF1_FIFO_64 | BIU_BURST_ENABLE,
60 /* MAGIC- all known PCI card implementations are 60MHz */
BIU_BURST_ENABLE,
0
};
static struct ispmdvec mdvec_2100 = {
@ -74,7 +88,7 @@ static struct ispmdvec mdvec_2100 = {
isp_pci_wr_reg,
isp_pci_mbxdma,
isp_pci_dmasetup,
NULL,
isp_pci_dmateardown,
NULL,
isp_pci_reset1,
isp_pci_dumpregs,
@ -82,15 +96,15 @@ static struct ispmdvec mdvec_2100 = {
ISP2100_CODE_LENGTH,
ISP2100_CODE_ORG,
ISP2100_CODE_VERSION,
BIU_PCI_CONF1_FIFO_64 | BIU_BURST_ENABLE,
60 /* MAGIC- all known PCI card implementations are 60MHz */
BIU_BURST_ENABLE,
0
};
#ifndef PCIM_CMD_INVEN
#define PCIM_CMD_INVEN 0x10
#define PCIM_CMD_INVEN 0x10
#endif
#ifndef PCIM_CMD_BUSMASTEREN
#define PCIM_CMD_BUSMASTEREN 0x0004
#define PCIM_CMD_BUSMASTEREN 0x0004
#endif
#ifndef PCI_VENDOR_QLOGIC
@ -118,8 +132,9 @@ static struct ispmdvec mdvec_2100 = {
static char *isp_pci_probe __P((pcici_t tag, pcidi_t type));
static void isp_pci_attach __P((pcici_t config_d, int unit));
/* This distinguishing define is not right, but it does work */
#ifndef SCSI_CAM
#define I386_BUS_SPACE_IO 0
#define I386_BUS_SPACE_MEM 1
typedef int bus_space_tag_t;
@ -130,13 +145,20 @@ typedef u_long bus_space_handle_t;
#define bus_space_write_2(st, sh, offset, val) \
if (st == I386_BUS_SPACE_IO) outw((u_int16_t)sh + offset, val); else \
*((u_int16_t *)(uintptr_t)sh) = val
#endif
struct isp_pcisoftc {
struct ispsoftc pci_isp;
pcici_t pci_id;
bus_space_tag_t pci_st;
bus_space_handle_t pci_sh;
struct ispsoftc pci_isp;
pcici_t pci_id;
bus_space_tag_t pci_st;
bus_space_handle_t pci_sh;
#ifdef SCSI_CAM
bus_dma_tag_t parent_dmat;
bus_dma_tag_t cntrol_dmat;
bus_dmamap_t cntrol_dmap;
bus_dmamap_t dmaps[MAXISPREQUEST];
#endif
union {
sdparam _x;
struct {
@ -146,13 +168,13 @@ struct isp_pcisoftc {
} _z;
};
static u_long isp_unit;
static u_long ispunit;
struct pci_device isp_pci_driver = {
"isp",
isp_pci_probe,
isp_pci_attach,
&isp_unit,
&ispunit,
NULL
};
DATA_SET (pcidevice_set, isp_pci_driver);
@ -178,8 +200,9 @@ isp_pci_probe(tag, type)
}
if (oneshot) {
oneshot = 0;
printf("***Qlogic ISP Driver, FreeBSD NonCam Version\n***%s\n",
ISP_VERSION_STRING);
printf("%s Version %d.%d, Core Version %d.%d\n", PVS,
ISP_PLATFORM_VERSION_MAJOR, ISP_PLATFORM_VERSION_MINOR,
ISP_CORE_VERSION_MAJOR, ISP_CORE_VERSION_MINOR);
}
return (x);
}
@ -229,7 +252,7 @@ isp_pci_attach(config_id, unit)
return;
}
printf("isp%d: using %s space register mapping\n", unit,
pcs->pci_st == I386_BUS_SPACE_IO? "I/O" : "Memory");
pcs->pci_st == I386_BUS_SPACE_IO? "I/O" : "Memory");
isp = &pcs->pci_isp;
(void) sprintf(isp->isp_name, "isp%d", unit);
@ -245,7 +268,7 @@ isp_pci_attach(config_id, unit)
isp->isp_type = ISP_HA_FC_2100;
isp->isp_param = &pcs->_z._y._a;
ISP_LOCK;
ISP_LOCK(isp);
data = pci_conf_read(config_id, PCI_COMMAND_STATUS_REG);
data |= PCIM_CMD_BUSMASTEREN | PCIM_CMD_INVEN;
pci_conf_write(config_id, PCI_COMMAND_STATUS_REG, data);
@ -257,12 +280,22 @@ isp_pci_attach(config_id, unit)
data = pci_conf_read(config_id, 0x30);
data &= ~1;
pci_conf_write(config_id, 0x30, data);
ISP_UNLOCK;
ISP_UNLOCK(isp);
} else {
printf("%s: unknown dev (%x)- punting\n", isp->isp_name, data);
free(pcs, M_DEVBUF);
return;
}
#ifdef SCSI_CAM
if (bus_dma_tag_create(NULL, 0, 0, BUS_SPACE_MAXADDR_32BIT,
BUS_SPACE_MAXADDR, NULL, NULL, 1<<24,
255, 1<<24, 0, &pcs->parent_dmat) != 0) {
printf("%s: could not create master dma tag\n", isp->isp_name);
free(pcs, M_DEVBUF);
return;
}
#endif
if (pci_map_int(config_id, (void (*)(void *))isp_intr,
(void *)isp, &IMASK) == 0) {
printf("%s: could not map interrupt\n", isp->isp_name);
@ -271,28 +304,26 @@ isp_pci_attach(config_id, unit)
}
pcs->pci_id = config_id;
ISP_LOCK;
ISP_LOCK(isp);
isp_reset(isp);
if (isp->isp_state != ISP_RESETSTATE) {
ISP_UNLOCK;
ISP_UNLOCK(isp);
free(pcs, M_DEVBUF);
return;
}
isp_init(isp);
if (isp->isp_state != ISP_INITSTATE) {
isp_uninit(isp);
ISP_UNLOCK;
ISP_UNLOCK(isp);
free(pcs, M_DEVBUF);
return;
}
isp_attach(isp);
if (isp->isp_state != ISP_RUNSTATE) {
isp_uninit(isp);
ISP_UNLOCK;
free(pcs, M_DEVBUF);
return;
}
ISP_UNLOCK;
ISP_UNLOCK(isp);
}
#define PCI_BIU_REGS_OFF BIU_REGS_OFF
@ -365,6 +396,366 @@ isp_pci_wr_reg(isp, regoff, val)
}
}
#ifdef SCSI_CAM
static void isp_map_rquest __P((void *, bus_dma_segment_t *, int, int));
static void isp_map_result __P((void *, bus_dma_segment_t *, int, int));
static void isp_map_fcscrt __P((void *, bus_dma_segment_t *, int, int));
static void
isp_map_rquest(arg, segs, nseg, error)
void *arg;
bus_dma_segment_t *segs;
int nseg;
int error;
{
struct ispsoftc *isp = (struct ispsoftc *) arg;
isp->isp_rquest_dma = segs->ds_addr;
}
static void
isp_map_result(arg, segs, nseg, error)
void *arg;
bus_dma_segment_t *segs;
int nseg;
int error;
{
struct ispsoftc *isp = (struct ispsoftc *) arg;
isp->isp_result_dma = segs->ds_addr;
}
static void
isp_map_fcscrt(arg, segs, nseg, error)
void *arg;
bus_dma_segment_t *segs;
int nseg;
int error;
{
struct ispsoftc *isp = (struct ispsoftc *) arg;
fcparam *fcp = isp->isp_param;
fcp->isp_scdma = segs->ds_addr;
}
static int
isp_pci_mbxdma(isp)
struct ispsoftc *isp;
{
struct isp_pcisoftc *pci = (struct isp_pcisoftc *)isp;
caddr_t base;
u_int32_t len;
int i, error;
/*
* Allocate and map the request, result queues, plus FC scratch area.
*/
len = ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN);
len += ISP_QUEUE_SIZE(RESULT_QUEUE_LEN);
if (isp->isp_type & ISP_HA_FC) {
len += ISP2100_SCRLEN;
}
if (bus_dma_tag_create(pci->parent_dmat, 0, 0, BUS_SPACE_MAXADDR,
BUS_SPACE_MAXADDR, NULL, NULL, len, 1, BUS_SPACE_MAXSIZE_32BIT,
0, &pci->cntrol_dmat) != 0) {
printf("%s: cannot create a dma tag for control spaces\n",
isp->isp_name);
return (1);
}
if (bus_dmamem_alloc(pci->cntrol_dmat, (void **)&base,
BUS_DMA_NOWAIT, &pci->cntrol_dmap) != 0) {
printf("%s: cannot allocate CCB memory\n", isp->isp_name);
return (1);
}
isp->isp_rquest = base;
bus_dmamap_load(pci->cntrol_dmat, pci->cntrol_dmap, isp->isp_rquest,
ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN), isp_map_rquest, pci, 0);
isp->isp_result = base + ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN);
bus_dmamap_load(pci->cntrol_dmat, pci->cntrol_dmap, isp->isp_result,
ISP_QUEUE_SIZE(RESULT_QUEUE_LEN), isp_map_result, pci, 0);
if (isp->isp_type & ISP_HA_FC) {
fcparam *fcp = (fcparam *) isp->isp_param;
fcp->isp_scratch = isp->isp_result +
ISP_QUEUE_SIZE(RESULT_QUEUE_LEN);
bus_dmamap_load(pci->cntrol_dmat, pci->cntrol_dmap,
fcp->isp_scratch, ISP2100_SCRLEN, isp_map_fcscrt, pci, 0);
}
/*
* Use this opportunity to initialize/create data DMA maps.
*/
for (i = 0; i < MAXISPREQUEST; i++) {
error = bus_dmamap_create(pci->parent_dmat, 0, &pci->dmaps[i]);
if (error) {
printf("%s: error %d creating data DMA maps\n",
isp->isp_name, error);
return (1);
}
}
return (0);
}
static void dma2 __P((void *, bus_dma_segment_t *, int, int));
typedef struct {
struct ispsoftc *isp;
ISP_SCSI_XFER_T *ccb;
ispreq_t *rq;
u_int8_t *iptrp;
u_int8_t optr;
u_int error;
} mush_t;
static void
dma2(arg, dm_segs, nseg, error)
void *arg;
bus_dma_segment_t *dm_segs;
int nseg;
int error;
{
mush_t *mp;
ISP_SCSI_XFER_T *ccb;
struct ispsoftc *isp;
struct isp_pcisoftc *pci;
bus_dmamap_t *dp;
bus_dma_segment_t *eseg;
ispreq_t *rq;
u_int8_t *iptrp;
u_int8_t optr;
ispcontreq_t *crq;
int drq, seglim, datalen;
mp = (mush_t *) arg;
if (error) {
mp->error = error;
return;
}
isp = mp->isp;
if (nseg < 1) {
printf("%s: zero or negative segment count\n", isp->isp_name);
mp->error = EFAULT;
return;
}
ccb = mp->ccb;
rq = mp->rq;
iptrp = mp->iptrp;
optr = mp->optr;
pci = (struct isp_pcisoftc *)isp;
dp = &pci->dmaps[rq->req_handle - 1];
if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) {
bus_dmamap_sync(pci->parent_dmat, *dp, BUS_DMASYNC_PREREAD);
drq = REQFLAG_DATA_IN;
} else {
bus_dmamap_sync(pci->parent_dmat, *dp, BUS_DMASYNC_PREWRITE);
drq = REQFLAG_DATA_OUT;
}
datalen = XS_XFRLEN(ccb);
if (isp->isp_type & ISP_HA_FC) {
seglim = ISP_RQDSEG_T2;
((ispreqt2_t *)rq)->req_totalcnt = datalen;
((ispreqt2_t *)rq)->req_flags |= drq;
} else {
seglim = ISP_RQDSEG;
rq->req_flags |= drq;
}
eseg = dm_segs + nseg;
while (datalen != 0 && rq->req_seg_count < seglim && dm_segs != eseg) {
if (isp->isp_type & ISP_HA_FC) {
ispreqt2_t *rq2 = (ispreqt2_t *)rq;
rq2->req_dataseg[rq2->req_seg_count].ds_base =
dm_segs->ds_addr;
rq2->req_dataseg[rq2->req_seg_count].ds_count =
dm_segs->ds_len;
} else {
rq->req_dataseg[rq->req_seg_count].ds_base =
dm_segs->ds_addr;
rq->req_dataseg[rq->req_seg_count].ds_count =
dm_segs->ds_len;
}
datalen -= dm_segs->ds_len;
#if 0
if (isp->isp_type & ISP_HA_FC) {
ispreqt2_t *rq2 = (ispreqt2_t *)rq;
printf("%s: seg0[%d] cnt 0x%x paddr 0x%08x\n",
isp->isp_name, rq->req_seg_count,
rq2->req_dataseg[rq2->req_seg_count].ds_count,
rq2->req_dataseg[rq2->req_seg_count].ds_base);
} else {
printf("%s: seg0[%d] cnt 0x%x paddr 0x%08x\n",
isp->isp_name, rq->req_seg_count,
rq->req_dataseg[rq->req_seg_count].ds_count,
rq->req_dataseg[rq->req_seg_count].ds_base);
}
#endif
rq->req_seg_count++;
dm_segs++;
}
if (datalen == 0)
return;
while (datalen > 0 && dm_segs != eseg) {
crq = (ispcontreq_t *) ISP_QUEUE_ENTRY(isp->isp_rquest, *iptrp);
*iptrp = (*iptrp + 1) & (RQUEST_QUEUE_LEN - 1);
if (*iptrp == optr) {
printf("%s: Request Queue Overflow+\n", isp->isp_name);
mp->error = EFBIG;
return;
}
rq->req_header.rqs_entry_count++;
bzero((void *)crq, sizeof (*crq));
crq->req_header.rqs_entry_count = 1;
crq->req_header.rqs_entry_type = RQSTYPE_DATASEG;
seglim = 0;
while (datalen > 0 && seglim < ISP_CDSEG && dm_segs != eseg) {
crq->req_dataseg[seglim].ds_base =
dm_segs->ds_addr;
crq->req_dataseg[seglim].ds_count =
dm_segs->ds_len;
#if 0
printf("%s: seg%d[%d] cnt 0x%x paddr 0x%08x\n",
isp->isp_name, rq->req_header.rqs_entry_count-1,
seglim, crq->req_dataseg[seglim].ds_count,
crq->req_dataseg[seglim].ds_base);
#endif
rq->req_seg_count++;
dm_segs++;
seglim++;
datalen -= dm_segs->ds_len;
}
}
}
static int
isp_pci_dmasetup(isp, ccb, rq, iptrp, optr)
struct ispsoftc *isp;
ISP_SCSI_XFER_T *ccb;
ispreq_t *rq;
u_int8_t *iptrp;
u_int8_t optr;
{
struct isp_pcisoftc *pci = (struct isp_pcisoftc *)isp;
struct ccb_hdr *ccb_h;
struct ccb_scsiio *csio;
bus_dmamap_t *dp;
mush_t mush, *mp;
csio = (struct ccb_scsiio *) ccb;
ccb_h = &csio->ccb_h;
if ((ccb_h->flags & CAM_DIR_MASK) == CAM_DIR_NONE) {
rq->req_seg_count = 1;
return (0);
}
dp = &pci->dmaps[rq->req_handle - 1];
/*
* Do a virtual grapevine step to collect info for
* a callback method we really didn't want.
*/
mp = &mush;
mp->isp = isp;
mp->ccb = ccb;
mp->rq = rq;
mp->iptrp = iptrp;
mp->optr = optr;
mp->error = 0;
if ((ccb_h->flags & CAM_SCATTER_VALID) == 0) {
if ((ccb_h->flags & CAM_DATA_PHYS) == 0) {
int error;
/*
* spls are spls, locks are locks.
* it isn't clear whether splsoftvm, if s spl,
* is a RAISE over splcam, or not.
*/
#if 0
int s;
s = splsoftvm();
#endif
error = bus_dmamap_load(pci->parent_dmat, *dp,
csio->data_ptr, csio->dxfer_len, dma2, mp, 0);
#if 0
splx(s);
#endif
if (error == EINPROGRESS) {
/*
* We simply aren't going to support
* this at this time. This mechanism
* is too rigid for my taste.
*/
printf("%s: sorry, we're not doing bounceio\n",
isp->isp_name);
bus_dmamap_unload(pci->parent_dmat, *dp);
mp->error = EINVAL;
} else if (error && mp->error == 0) {
mp->error = error;
}
} else {
/* Pointer to physical buffer */
struct bus_dma_segment seg;
seg.ds_addr = (bus_addr_t)csio->data_ptr;
seg.ds_len = csio->dxfer_len;
dma2(mp, &seg, 1, 0);
}
} else {
struct bus_dma_segment *segs;
if ((ccb_h->flags & CAM_DATA_PHYS) != 0) {
printf("%s: Physical segment pointers unsupported",
isp->isp_name);
mp->error = EINVAL;
} else if ((ccb_h->flags&CAM_SG_LIST_PHYS) == 0) {
printf("%s: Virtual segment addresses unsupported",
isp->isp_name);
mp->error = EINVAL;
} else {
/* Just use the segments provided */
segs = (struct bus_dma_segment *) csio->data_ptr;
dma2(mp, segs, csio->sglist_cnt, 0);
}
}
if (mp->error) {
if (mp->error != EFBIG) {
printf("%s: Unexepected error 0x%x returned from "
"bus_dmamap_load\n", isp->isp_name, mp->error);
ccb_h->status = CAM_REQ_TOO_BIG;
} else if (mp->error == EINVAL) {
ccb_h->status = CAM_REQ_INVALID;
} else {
ccb_h->status = CAM_UNREC_HBA_ERROR;
}
ccb_h->status |= CAM_DEV_QFRZN;
printf("%s:isp_pci_dmasetup->xpt_freeze_devq\n", isp->isp_name);
xpt_freeze_devq(ccb_h->path, 1);
}
return (mp->error);
}
static void
isp_pci_dmateardown(isp, ccb, handle)
struct ispsoftc *isp;
ISP_SCSI_XFER_T *ccb;
u_int32_t handle;
{
struct isp_pcisoftc *pci = (struct isp_pcisoftc *)isp;
bus_dmamap_t *dp = &pci->dmaps[handle];
if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) {
bus_dmamap_sync(pci->parent_dmat, *dp, BUS_DMASYNC_POSTREAD);
} else {
bus_dmamap_sync(pci->parent_dmat, *dp, BUS_DMASYNC_POSTWRITE);
}
bus_dmamap_unload(pci->parent_dmat, *dp);
}
#else /* SCSI_CAM */
static int
isp_pci_mbxdma(isp)
struct ispsoftc *isp;
@ -377,7 +768,7 @@ isp_pci_mbxdma(isp)
/*
* Allocate and map the request queue.
*/
len = ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN(isp));
len = ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN);
isp->isp_rquest = malloc(len, M_DEVBUF, M_NOWAIT);
if (isp->isp_rquest == NULL) {
printf("%s: cannot malloc request queue\n", isp->isp_name);
@ -392,7 +783,7 @@ isp_pci_mbxdma(isp)
/*
* Allocate and map the result queue.
*/
len = ISP_QUEUE_SIZE(RESULT_QUEUE_LEN(isp));
len = ISP_QUEUE_SIZE(RESULT_QUEUE_LEN);
isp->isp_result = malloc(len, M_DEVBUF, M_NOWAIT);
if (isp->isp_result == NULL) {
free(isp->isp_rquest, M_DEVBUF);
@ -439,14 +830,14 @@ isp_pci_dmasetup(isp, xs, rq, iptrp, optr)
if (isp->isp_type & ISP_HA_FC) {
seglim = ISP_RQDSEG_T2;
((ispreqt2_t *)rq)->req_totalcnt = xs->datalen;
((ispreqt2_t *)rq)->req_totalcnt = XS_XFRLEN(xs);
((ispreqt2_t *)rq)->req_flags |= drq;
} else {
seglim = ISP_RQDSEG;
rq->req_flags |= drq;
}
datalen = xs->datalen;;
datalen = XS_XFRLEN(xs);
vaddr = (vm_offset_t) xs->data;
paddr = vtophys(vaddr);
@ -500,9 +891,10 @@ isp_pci_dmasetup(isp, xs, rq, iptrp, optr)
paddr = vtophys(vaddr);
while (datalen > 0) {
crq = (ispcontreq_t *) ISP_QUEUE_ENTRY(isp->isp_rquest, *iptrp);
*iptrp = (*iptrp + 1) & (RQUEST_QUEUE_LEN(isp) - 1);
*iptrp = (*iptrp + 1) & (RQUEST_QUEUE_LEN - 1);
if (*iptrp == optr) {
printf("%s: Request Queue Overflow\n", isp->isp_name);
XS_SETERR(xs, HBA_BOTCH);
return (EFBIG);
}
rq->req_header.rqs_entry_count++;
@ -539,6 +931,7 @@ isp_pci_dmasetup(isp, xs, rq, iptrp, optr)
return (0);
}
#endif
static void
isp_pci_reset1(isp)
@ -556,4 +949,3 @@ isp_pci_dumpregs(isp)
printf("%s: PCI Status Command/Status=%lx\n", pci->pci_isp.isp_name,
pci_conf_read(pci->pci_id, PCI_COMMAND_STATUS_REG));
}
#endif

464
sys/pci/isp_pci.c
View file

@ -1,5 +1,5 @@
/* $FreeBSD$ */
/* $Id: isp_pci.c,v 1.2 1998/07/13 09:53:09 bde Exp $ */
/* $Id: isp_pci.c,v 1.13 1998/09/08 01:24:58 mjacob Exp $ */
/*
* PCI specific probe and attach routines for Qlogic ISP SCSI adapters.
* FreeBSD Version.
@ -34,20 +34,34 @@
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <pci.h>
#if NPCI > 0
#include <dev/isp/isp_freebsd.h>
#include <dev/isp/asm_pci.h>
#include <sys/malloc.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include <vm/vm_extern.h>
#include <pci/pcireg.h>
#include <pci/pcivar.h>
#ifdef SCSI_CAM
#include <machine/bus_memio.h>
#include <machine/bus_pio.h>
#include <machine/bus.h>
#endif
static u_int16_t isp_pci_rd_reg __P((struct ispsoftc *, int));
static void isp_pci_wr_reg __P((struct ispsoftc *, int, u_int16_t));
static int isp_pci_mbxdma __P((struct ispsoftc *));
static int isp_pci_dmasetup __P((struct ispsoftc *, ISP_SCSI_XFER_T *,
ispreq_t *, u_int8_t *, u_int8_t));
#ifdef SCSI_CAM
static void
isp_pci_dmateardown __P((struct ispsoftc *, ISP_SCSI_XFER_T *, u_int32_t));
#else
#define isp_pci_dmateardown NULL
#endif
static void isp_pci_reset1 __P((struct ispsoftc *));
static void isp_pci_dumpregs __P((struct ispsoftc *));
@ -57,7 +71,7 @@ static struct ispmdvec mdvec = {
isp_pci_wr_reg,
isp_pci_mbxdma,
isp_pci_dmasetup,
NULL,
isp_pci_dmateardown,
NULL,
isp_pci_reset1,
isp_pci_dumpregs,
@ -65,8 +79,8 @@ static struct ispmdvec mdvec = {
ISP_CODE_LENGTH,
ISP_CODE_ORG,
ISP_CODE_VERSION,
BIU_PCI_CONF1_FIFO_64 | BIU_BURST_ENABLE,
60 /* MAGIC- all known PCI card implementations are 60MHz */
BIU_BURST_ENABLE,
0
};
static struct ispmdvec mdvec_2100 = {
@ -74,7 +88,7 @@ static struct ispmdvec mdvec_2100 = {
isp_pci_wr_reg,
isp_pci_mbxdma,
isp_pci_dmasetup,
NULL,
isp_pci_dmateardown,
NULL,
isp_pci_reset1,
isp_pci_dumpregs,
@ -82,15 +96,15 @@ static struct ispmdvec mdvec_2100 = {
ISP2100_CODE_LENGTH,
ISP2100_CODE_ORG,
ISP2100_CODE_VERSION,
BIU_PCI_CONF1_FIFO_64 | BIU_BURST_ENABLE,
60 /* MAGIC- all known PCI card implementations are 60MHz */
BIU_BURST_ENABLE,
0
};
#ifndef PCIM_CMD_INVEN
#define PCIM_CMD_INVEN 0x10
#define PCIM_CMD_INVEN 0x10
#endif
#ifndef PCIM_CMD_BUSMASTEREN
#define PCIM_CMD_BUSMASTEREN 0x0004
#define PCIM_CMD_BUSMASTEREN 0x0004
#endif
#ifndef PCI_VENDOR_QLOGIC
@ -118,8 +132,9 @@ static struct ispmdvec mdvec_2100 = {
static char *isp_pci_probe __P((pcici_t tag, pcidi_t type));
static void isp_pci_attach __P((pcici_t config_d, int unit));
/* This distinguishing define is not right, but it does work */
#ifndef SCSI_CAM
#define I386_BUS_SPACE_IO 0
#define I386_BUS_SPACE_MEM 1
typedef int bus_space_tag_t;
@ -130,13 +145,20 @@ typedef u_long bus_space_handle_t;
#define bus_space_write_2(st, sh, offset, val) \
if (st == I386_BUS_SPACE_IO) outw((u_int16_t)sh + offset, val); else \
*((u_int16_t *)(uintptr_t)sh) = val
#endif
struct isp_pcisoftc {
struct ispsoftc pci_isp;
pcici_t pci_id;
bus_space_tag_t pci_st;
bus_space_handle_t pci_sh;
struct ispsoftc pci_isp;
pcici_t pci_id;
bus_space_tag_t pci_st;
bus_space_handle_t pci_sh;
#ifdef SCSI_CAM
bus_dma_tag_t parent_dmat;
bus_dma_tag_t cntrol_dmat;
bus_dmamap_t cntrol_dmap;
bus_dmamap_t dmaps[MAXISPREQUEST];
#endif
union {
sdparam _x;
struct {
@ -146,13 +168,13 @@ struct isp_pcisoftc {
} _z;
};
static u_long isp_unit;
static u_long ispunit;
struct pci_device isp_pci_driver = {
"isp",
isp_pci_probe,
isp_pci_attach,
&isp_unit,
&ispunit,
NULL
};
DATA_SET (pcidevice_set, isp_pci_driver);
@ -178,8 +200,9 @@ isp_pci_probe(tag, type)
}
if (oneshot) {
oneshot = 0;
printf("***Qlogic ISP Driver, FreeBSD NonCam Version\n***%s\n",
ISP_VERSION_STRING);
printf("%s Version %d.%d, Core Version %d.%d\n", PVS,
ISP_PLATFORM_VERSION_MAJOR, ISP_PLATFORM_VERSION_MINOR,
ISP_CORE_VERSION_MAJOR, ISP_CORE_VERSION_MINOR);
}
return (x);
}
@ -229,7 +252,7 @@ isp_pci_attach(config_id, unit)
return;
}
printf("isp%d: using %s space register mapping\n", unit,
pcs->pci_st == I386_BUS_SPACE_IO? "I/O" : "Memory");
pcs->pci_st == I386_BUS_SPACE_IO? "I/O" : "Memory");
isp = &pcs->pci_isp;
(void) sprintf(isp->isp_name, "isp%d", unit);
@ -245,7 +268,7 @@ isp_pci_attach(config_id, unit)
isp->isp_type = ISP_HA_FC_2100;
isp->isp_param = &pcs->_z._y._a;
ISP_LOCK;
ISP_LOCK(isp);
data = pci_conf_read(config_id, PCI_COMMAND_STATUS_REG);
data |= PCIM_CMD_BUSMASTEREN | PCIM_CMD_INVEN;
pci_conf_write(config_id, PCI_COMMAND_STATUS_REG, data);
@ -257,12 +280,22 @@ isp_pci_attach(config_id, unit)
data = pci_conf_read(config_id, 0x30);
data &= ~1;
pci_conf_write(config_id, 0x30, data);
ISP_UNLOCK;
ISP_UNLOCK(isp);
} else {
printf("%s: unknown dev (%x)- punting\n", isp->isp_name, data);
free(pcs, M_DEVBUF);
return;
}
#ifdef SCSI_CAM
if (bus_dma_tag_create(NULL, 0, 0, BUS_SPACE_MAXADDR_32BIT,
BUS_SPACE_MAXADDR, NULL, NULL, 1<<24,
255, 1<<24, 0, &pcs->parent_dmat) != 0) {
printf("%s: could not create master dma tag\n", isp->isp_name);
free(pcs, M_DEVBUF);
return;
}
#endif
if (pci_map_int(config_id, (void (*)(void *))isp_intr,
(void *)isp, &IMASK) == 0) {
printf("%s: could not map interrupt\n", isp->isp_name);
@ -271,28 +304,26 @@ isp_pci_attach(config_id, unit)
}
pcs->pci_id = config_id;
ISP_LOCK;
ISP_LOCK(isp);
isp_reset(isp);
if (isp->isp_state != ISP_RESETSTATE) {
ISP_UNLOCK;
ISP_UNLOCK(isp);
free(pcs, M_DEVBUF);
return;
}
isp_init(isp);
if (isp->isp_state != ISP_INITSTATE) {
isp_uninit(isp);
ISP_UNLOCK;
ISP_UNLOCK(isp);
free(pcs, M_DEVBUF);
return;
}
isp_attach(isp);
if (isp->isp_state != ISP_RUNSTATE) {
isp_uninit(isp);
ISP_UNLOCK;
free(pcs, M_DEVBUF);
return;
}
ISP_UNLOCK;
ISP_UNLOCK(isp);
}
#define PCI_BIU_REGS_OFF BIU_REGS_OFF
@ -365,6 +396,366 @@ isp_pci_wr_reg(isp, regoff, val)
}
}
#ifdef SCSI_CAM
static void isp_map_rquest __P((void *, bus_dma_segment_t *, int, int));
static void isp_map_result __P((void *, bus_dma_segment_t *, int, int));
static void isp_map_fcscrt __P((void *, bus_dma_segment_t *, int, int));
static void
isp_map_rquest(arg, segs, nseg, error)
void *arg;
bus_dma_segment_t *segs;
int nseg;
int error;
{
struct ispsoftc *isp = (struct ispsoftc *) arg;
isp->isp_rquest_dma = segs->ds_addr;
}
static void
isp_map_result(arg, segs, nseg, error)
void *arg;
bus_dma_segment_t *segs;
int nseg;
int error;
{
struct ispsoftc *isp = (struct ispsoftc *) arg;
isp->isp_result_dma = segs->ds_addr;
}
static void
isp_map_fcscrt(arg, segs, nseg, error)
void *arg;
bus_dma_segment_t *segs;
int nseg;
int error;
{
struct ispsoftc *isp = (struct ispsoftc *) arg;
fcparam *fcp = isp->isp_param;
fcp->isp_scdma = segs->ds_addr;
}
static int
isp_pci_mbxdma(isp)
struct ispsoftc *isp;
{
struct isp_pcisoftc *pci = (struct isp_pcisoftc *)isp;
caddr_t base;
u_int32_t len;
int i, error;
/*
* Allocate and map the request, result queues, plus FC scratch area.
*/
len = ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN);
len += ISP_QUEUE_SIZE(RESULT_QUEUE_LEN);
if (isp->isp_type & ISP_HA_FC) {
len += ISP2100_SCRLEN;
}
if (bus_dma_tag_create(pci->parent_dmat, 0, 0, BUS_SPACE_MAXADDR,
BUS_SPACE_MAXADDR, NULL, NULL, len, 1, BUS_SPACE_MAXSIZE_32BIT,
0, &pci->cntrol_dmat) != 0) {
printf("%s: cannot create a dma tag for control spaces\n",
isp->isp_name);
return (1);
}
if (bus_dmamem_alloc(pci->cntrol_dmat, (void **)&base,
BUS_DMA_NOWAIT, &pci->cntrol_dmap) != 0) {
printf("%s: cannot allocate CCB memory\n", isp->isp_name);
return (1);
}
isp->isp_rquest = base;
bus_dmamap_load(pci->cntrol_dmat, pci->cntrol_dmap, isp->isp_rquest,
ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN), isp_map_rquest, pci, 0);
isp->isp_result = base + ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN);
bus_dmamap_load(pci->cntrol_dmat, pci->cntrol_dmap, isp->isp_result,
ISP_QUEUE_SIZE(RESULT_QUEUE_LEN), isp_map_result, pci, 0);
if (isp->isp_type & ISP_HA_FC) {
fcparam *fcp = (fcparam *) isp->isp_param;
fcp->isp_scratch = isp->isp_result +
ISP_QUEUE_SIZE(RESULT_QUEUE_LEN);
bus_dmamap_load(pci->cntrol_dmat, pci->cntrol_dmap,
fcp->isp_scratch, ISP2100_SCRLEN, isp_map_fcscrt, pci, 0);
}
/*
* Use this opportunity to initialize/create data DMA maps.
*/
for (i = 0; i < MAXISPREQUEST; i++) {
error = bus_dmamap_create(pci->parent_dmat, 0, &pci->dmaps[i]);
if (error) {
printf("%s: error %d creating data DMA maps\n",
isp->isp_name, error);
return (1);
}
}
return (0);
}
static void dma2 __P((void *, bus_dma_segment_t *, int, int));
typedef struct {
struct ispsoftc *isp;
ISP_SCSI_XFER_T *ccb;
ispreq_t *rq;
u_int8_t *iptrp;
u_int8_t optr;
u_int error;
} mush_t;
static void
dma2(arg, dm_segs, nseg, error)
void *arg;
bus_dma_segment_t *dm_segs;
int nseg;
int error;
{
mush_t *mp;
ISP_SCSI_XFER_T *ccb;
struct ispsoftc *isp;
struct isp_pcisoftc *pci;
bus_dmamap_t *dp;
bus_dma_segment_t *eseg;
ispreq_t *rq;
u_int8_t *iptrp;
u_int8_t optr;
ispcontreq_t *crq;
int drq, seglim, datalen;
mp = (mush_t *) arg;
if (error) {
mp->error = error;
return;
}
isp = mp->isp;
if (nseg < 1) {
printf("%s: zero or negative segment count\n", isp->isp_name);
mp->error = EFAULT;
return;
}
ccb = mp->ccb;
rq = mp->rq;
iptrp = mp->iptrp;
optr = mp->optr;
pci = (struct isp_pcisoftc *)isp;
dp = &pci->dmaps[rq->req_handle - 1];
if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) {
bus_dmamap_sync(pci->parent_dmat, *dp, BUS_DMASYNC_PREREAD);
drq = REQFLAG_DATA_IN;
} else {
bus_dmamap_sync(pci->parent_dmat, *dp, BUS_DMASYNC_PREWRITE);
drq = REQFLAG_DATA_OUT;
}
datalen = XS_XFRLEN(ccb);
if (isp->isp_type & ISP_HA_FC) {
seglim = ISP_RQDSEG_T2;
((ispreqt2_t *)rq)->req_totalcnt = datalen;
((ispreqt2_t *)rq)->req_flags |= drq;
} else {
seglim = ISP_RQDSEG;
rq->req_flags |= drq;
}
eseg = dm_segs + nseg;
while (datalen != 0 && rq->req_seg_count < seglim && dm_segs != eseg) {
if (isp->isp_type & ISP_HA_FC) {
ispreqt2_t *rq2 = (ispreqt2_t *)rq;
rq2->req_dataseg[rq2->req_seg_count].ds_base =
dm_segs->ds_addr;
rq2->req_dataseg[rq2->req_seg_count].ds_count =
dm_segs->ds_len;
} else {
rq->req_dataseg[rq->req_seg_count].ds_base =
dm_segs->ds_addr;
rq->req_dataseg[rq->req_seg_count].ds_count =
dm_segs->ds_len;
}
datalen -= dm_segs->ds_len;
#if 0
if (isp->isp_type & ISP_HA_FC) {
ispreqt2_t *rq2 = (ispreqt2_t *)rq;
printf("%s: seg0[%d] cnt 0x%x paddr 0x%08x\n",
isp->isp_name, rq->req_seg_count,
rq2->req_dataseg[rq2->req_seg_count].ds_count,
rq2->req_dataseg[rq2->req_seg_count].ds_base);
} else {
printf("%s: seg0[%d] cnt 0x%x paddr 0x%08x\n",
isp->isp_name, rq->req_seg_count,
rq->req_dataseg[rq->req_seg_count].ds_count,
rq->req_dataseg[rq->req_seg_count].ds_base);
}
#endif
rq->req_seg_count++;
dm_segs++;
}
if (datalen == 0)
return;
while (datalen > 0 && dm_segs != eseg) {
crq = (ispcontreq_t *) ISP_QUEUE_ENTRY(isp->isp_rquest, *iptrp);
*iptrp = (*iptrp + 1) & (RQUEST_QUEUE_LEN - 1);
if (*iptrp == optr) {
printf("%s: Request Queue Overflow+\n", isp->isp_name);
mp->error = EFBIG;
return;
}
rq->req_header.rqs_entry_count++;
bzero((void *)crq, sizeof (*crq));
crq->req_header.rqs_entry_count = 1;
crq->req_header.rqs_entry_type = RQSTYPE_DATASEG;
seglim = 0;
while (datalen > 0 && seglim < ISP_CDSEG && dm_segs != eseg) {
crq->req_dataseg[seglim].ds_base =
dm_segs->ds_addr;
crq->req_dataseg[seglim].ds_count =
dm_segs->ds_len;
#if 0
printf("%s: seg%d[%d] cnt 0x%x paddr 0x%08x\n",
isp->isp_name, rq->req_header.rqs_entry_count-1,
seglim, crq->req_dataseg[seglim].ds_count,
crq->req_dataseg[seglim].ds_base);
#endif
rq->req_seg_count++;
dm_segs++;
seglim++;
datalen -= dm_segs->ds_len;
}
}
}
static int
isp_pci_dmasetup(isp, ccb, rq, iptrp, optr)
struct ispsoftc *isp;
ISP_SCSI_XFER_T *ccb;
ispreq_t *rq;
u_int8_t *iptrp;
u_int8_t optr;
{
struct isp_pcisoftc *pci = (struct isp_pcisoftc *)isp;
struct ccb_hdr *ccb_h;
struct ccb_scsiio *csio;
bus_dmamap_t *dp;
mush_t mush, *mp;
csio = (struct ccb_scsiio *) ccb;
ccb_h = &csio->ccb_h;
if ((ccb_h->flags & CAM_DIR_MASK) == CAM_DIR_NONE) {
rq->req_seg_count = 1;
return (0);
}
dp = &pci->dmaps[rq->req_handle - 1];
/*
* Do a virtual grapevine step to collect info for
* a callback method we really didn't want.
*/
mp = &mush;
mp->isp = isp;
mp->ccb = ccb;
mp->rq = rq;
mp->iptrp = iptrp;
mp->optr = optr;
mp->error = 0;
if ((ccb_h->flags & CAM_SCATTER_VALID) == 0) {
if ((ccb_h->flags & CAM_DATA_PHYS) == 0) {
int error;
/*
* spls are spls, locks are locks.
* it isn't clear whether splsoftvm, if s spl,
* is a RAISE over splcam, or not.
*/
#if 0
int s;
s = splsoftvm();
#endif
error = bus_dmamap_load(pci->parent_dmat, *dp,
csio->data_ptr, csio->dxfer_len, dma2, mp, 0);
#if 0
splx(s);
#endif
if (error == EINPROGRESS) {
/*
* We simply aren't going to support
* this at this time. This mechanism
* is too rigid for my taste.
*/
printf("%s: sorry, we're not doing bounceio\n",
isp->isp_name);
bus_dmamap_unload(pci->parent_dmat, *dp);
mp->error = EINVAL;
} else if (error && mp->error == 0) {
mp->error = error;
}
} else {
/* Pointer to physical buffer */
struct bus_dma_segment seg;
seg.ds_addr = (bus_addr_t)csio->data_ptr;
seg.ds_len = csio->dxfer_len;
dma2(mp, &seg, 1, 0);
}
} else {
struct bus_dma_segment *segs;
if ((ccb_h->flags & CAM_DATA_PHYS) != 0) {
printf("%s: Physical segment pointers unsupported",
isp->isp_name);
mp->error = EINVAL;
} else if ((ccb_h->flags&CAM_SG_LIST_PHYS) == 0) {
printf("%s: Virtual segment addresses unsupported",
isp->isp_name);
mp->error = EINVAL;
} else {
/* Just use the segments provided */
segs = (struct bus_dma_segment *) csio->data_ptr;
dma2(mp, segs, csio->sglist_cnt, 0);
}
}
if (mp->error) {
if (mp->error != EFBIG) {
printf("%s: Unexepected error 0x%x returned from "
"bus_dmamap_load\n", isp->isp_name, mp->error);
ccb_h->status = CAM_REQ_TOO_BIG;
} else if (mp->error == EINVAL) {
ccb_h->status = CAM_REQ_INVALID;
} else {
ccb_h->status = CAM_UNREC_HBA_ERROR;
}
ccb_h->status |= CAM_DEV_QFRZN;
printf("%s:isp_pci_dmasetup->xpt_freeze_devq\n", isp->isp_name);
xpt_freeze_devq(ccb_h->path, 1);
}
return (mp->error);
}
static void
isp_pci_dmateardown(isp, ccb, handle)
struct ispsoftc *isp;
ISP_SCSI_XFER_T *ccb;
u_int32_t handle;
{
struct isp_pcisoftc *pci = (struct isp_pcisoftc *)isp;
bus_dmamap_t *dp = &pci->dmaps[handle];
if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) {
bus_dmamap_sync(pci->parent_dmat, *dp, BUS_DMASYNC_POSTREAD);
} else {
bus_dmamap_sync(pci->parent_dmat, *dp, BUS_DMASYNC_POSTWRITE);
}
bus_dmamap_unload(pci->parent_dmat, *dp);
}
#else /* SCSI_CAM */
static int
isp_pci_mbxdma(isp)
struct ispsoftc *isp;
@ -377,7 +768,7 @@ isp_pci_mbxdma(isp)
/*
* Allocate and map the request queue.
*/
len = ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN(isp));
len = ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN);
isp->isp_rquest = malloc(len, M_DEVBUF, M_NOWAIT);
if (isp->isp_rquest == NULL) {
printf("%s: cannot malloc request queue\n", isp->isp_name);
@ -392,7 +783,7 @@ isp_pci_mbxdma(isp)
/*
* Allocate and map the result queue.
*/
len = ISP_QUEUE_SIZE(RESULT_QUEUE_LEN(isp));
len = ISP_QUEUE_SIZE(RESULT_QUEUE_LEN);
isp->isp_result = malloc(len, M_DEVBUF, M_NOWAIT);
if (isp->isp_result == NULL) {
free(isp->isp_rquest, M_DEVBUF);
@ -439,14 +830,14 @@ isp_pci_dmasetup(isp, xs, rq, iptrp, optr)
if (isp->isp_type & ISP_HA_FC) {
seglim = ISP_RQDSEG_T2;
((ispreqt2_t *)rq)->req_totalcnt = xs->datalen;
((ispreqt2_t *)rq)->req_totalcnt = XS_XFRLEN(xs);
((ispreqt2_t *)rq)->req_flags |= drq;
} else {
seglim = ISP_RQDSEG;
rq->req_flags |= drq;
}
datalen = xs->datalen;;
datalen = XS_XFRLEN(xs);
vaddr = (vm_offset_t) xs->data;
paddr = vtophys(vaddr);
@ -500,9 +891,10 @@ isp_pci_dmasetup(isp, xs, rq, iptrp, optr)
paddr = vtophys(vaddr);
while (datalen > 0) {
crq = (ispcontreq_t *) ISP_QUEUE_ENTRY(isp->isp_rquest, *iptrp);
*iptrp = (*iptrp + 1) & (RQUEST_QUEUE_LEN(isp) - 1);
*iptrp = (*iptrp + 1) & (RQUEST_QUEUE_LEN - 1);
if (*iptrp == optr) {
printf("%s: Request Queue Overflow\n", isp->isp_name);
XS_SETERR(xs, HBA_BOTCH);
return (EFBIG);
}
rq->req_header.rqs_entry_count++;
@ -539,6 +931,7 @@ isp_pci_dmasetup(isp, xs, rq, iptrp, optr)
return (0);
}
#endif
static void
isp_pci_reset1(isp)
@ -556,4 +949,3 @@ isp_pci_dumpregs(isp)
printf("%s: PCI Status Command/Status=%lx\n", pci->pci_isp.isp_name,
pci_conf_read(pci->pci_id, PCI_COMMAND_STATUS_REG));
}
#endif

2746
sys/pci/ncr.c
View file

File diff suppressed because it is too large Load diff

43
sys/pci/ncrreg.h
View file

@ -1,6 +1,6 @@
/**************************************************************************
**
** $Id: ncrreg.h,v 1.10 1997/08/24 06:24:51 se Exp $
** $Id: ncrreg.h,v 1.11 1997/08/31 19:42:31 se Exp $
**
** Device driver for the NCR 53C810 PCI-SCSI-Controller.
**
@ -535,50 +535,13 @@ struct scr_tblsel {
/*
** Messages
*/
#define M_COMPLETE (0x00)
#define M_EXTENDED (0x01)
#define M_SAVE_DP (0x02)
#define M_RESTORE_DP (0x03)
#define M_DISCONNECT (0x04)
#define M_ID_ERROR (0x05)
#define M_ABORT (0x06)
#define M_REJECT (0x07)
#define M_NOOP (0x08)
#define M_PARITY (0x09)
#define M_LCOMPLETE (0x0a)
#define M_FCOMPLETE (0x0b)
#define M_RESET (0x0c)
#define M_ABORT_TAG (0x0d)
#define M_CLEAR_QUEUE (0x0e)
#define M_INIT_REC (0x0f)
#define M_REL_REC (0x10)
#define M_TERMINATE (0x11)
#define M_SIMPLE_TAG (0x20)
#define M_HEAD_TAG (0x21)
#define M_ORDERED_TAG (0x22)
#define M_IGN_RESIDUE (0x23)
#define M_IDENTIFY (0x80)
#define M_X_MODIFY_DP (0x00)
#define M_X_SYNC_REQ (0x01)
#define M_X_WIDE_REQ (0x03)
/*
** Status
*/
#define S_GOOD (0x00)
#define S_CHECK_COND (0x02)
#define S_COND_MET (0x04)
#define S_BUSY (0x08)
#define S_INT (0x10)
#define S_INT_COND_MET (0x14)
#define S_CONFLICT (0x18)
#define S_TERMINATED (0x20)
#define S_QUEUE_FULL (0x28)
#define S_ILLEGAL (0xff)
#define S_SENSE (0x80)
#define SCSI_STATUS_ILLEGAL (0xff)
#define SCSI_STATUS_SENSE (0x80)
/*
** Bits defining chip features.