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NetBSD/sys/dev/pci/bktr/bktr_os.c

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Import of (finally busspaced) bktr-driver from FreeBSD (part 1). This version is from the location specified in the README, modified by bktr2netbsd, to be committed later.
2000-05-07 04:16:17 +04:00
/* $NetBSD: bktr_os.c,v 1.1.1.1 2000/05/07 00:16:18 wiz Exp $ */
/* FreeBSD: src/sys/dev/bktr/bktr_os.c,v 1.7 2000/04/16 07:50:09 roger Exp */
/*
* This is part of the Driver for Video Capture Cards (Frame grabbers)
* and TV Tuner cards using the Brooktree Bt848, Bt848A, Bt849A, Bt878, Bt879
* chipset.
* Copyright Roger Hardiman and Amancio Hasty.
*
* bktr_os : This has all the Operating System dependant code,
* probe/attach and open/close/ioctl/read/mmap
* memory allocation
* PCI bus interfacing
*
*
*/
/*
* 1. Redistributions of source code must retain the
* Copyright (c) 1997 Amancio Hasty, 1999 Roger Hardiman
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Amancio Hasty and
* Roger Hardiman
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifdef __FreeBSD__
#include "bktr.h"
#include "opt_devfs.h"
#endif /* __FreeBSD__ */
#include "opt_bktr.h" /* include any kernel config options */
#define FIFO_RISC_DISABLED 0
#define ALL_INTS_DISABLED 0
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/conf.h>
#include <sys/uio.h>
#include <sys/kernel.h>
#include <sys/signalvar.h>
#include <sys/mman.h>
#include <sys/poll.h>
#include <sys/select.h>
#include <sys/vnode.h>
#include <vm/vm.h>
#include <vm/vm_kern.h>
#include <vm/pmap.h>
#include <vm/vm_extern.h>
/*******************/
/* *** FreeBSD *** */
/*******************/
#ifdef __FreeBSD__
#if (__FreeBSD_version < 400000)
#ifdef DEVFS
#include <sys/devfsext.h>
#endif /* DEVFS */
#endif
#if (__FreeBSD_version >=400000) || (NSMBUS > 0)
#include <sys/bus.h> /* used by smbus and newbus */
#endif
#if (__FreeBSD_version >=300000)
#include <machine/bus_memio.h> /* used by bus space */
#include <machine/bus.h> /* used by bus space and newbus */
#include <sys/bus.h>
#endif
#if (__FreeBSD_version >=400000)
#include <sys/rman.h> /* used by newbus */
#include <machine/resource.h> /* used by newbus */
#endif
#include <machine/clock.h> /* for DELAY */
#include <pci/pcivar.h>
#include <pci/pcireg.h>
#endif
#ifdef __NetBSD__
#include <dev/ic/ioctl_meteor.h> /* NetBSD location for .h files */
#include <dev/ic/ioctl_bt848.h>
#else /* Traditional location for .h files */
#include <machine/ioctl_meteor.h>
#include <machine/ioctl_bt848.h> /* extensions to ioctl_meteor.h */
#endif
#include <dev/bktr/bktr_reg.h>
#include <dev/bktr/bktr_tuner.h>
#include <dev/bktr/bktr_card.h>
#include <dev/bktr/bktr_audio.h>
#include <dev/bktr/bktr_core.h>
#include <dev/bktr/bktr_os.h>
#if defined(__FreeBSD__)
#if (NSMBUS > 0)
#include <dev/bktr/bktr_i2c.h>
#endif
#include <sys/sysctl.h>
int bt848_card = -1;
int bt848_tuner = -1;
int bt848_reverse_mute = -1;
int bt848_format = -1;
int bt848_slow_msp_audio = -1;
SYSCTL_NODE(_hw, OID_AUTO, bt848, CTLFLAG_RW, 0, "Bt848 Driver mgmt");
SYSCTL_INT(_hw_bt848, OID_AUTO, card, CTLFLAG_RW, &bt848_card, -1, "");
SYSCTL_INT(_hw_bt848, OID_AUTO, tuner, CTLFLAG_RW, &bt848_tuner, -1, "");
SYSCTL_INT(_hw_bt848, OID_AUTO, reverse_mute, CTLFLAG_RW, &bt848_reverse_mute, -1, "");
SYSCTL_INT(_hw_bt848, OID_AUTO, format, CTLFLAG_RW, &bt848_format, -1, "");
SYSCTL_INT(_hw_bt848, OID_AUTO, slow_msp_audio, CTLFLAG_RW, &bt848_slow_msp_audio, -1, "");
#endif
#if (__FreeBSD__ == 2)
#define PCIR_REVID PCI_CLASS_REG
#endif
/****************/
/* *** BSDI *** */
/****************/
#ifdef __bsdi__
#endif /* __bsdi__ */
/**************************/
/* *** OpenBSD/NetBSD *** */
/**************************/
#if defined(__NetBSD__) || defined(__OpenBSD__)
#include <sys/device.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcidevs.h>
static int bootverbose = 1;
#define BKTR_DEBUG
#ifdef BKTR_DEBUG
int bktr_debug = 0;
#define DPR(x) (bktr_debug ? printf x : 0)
#else
#define DPR(x)
#endif
#endif /* __NetBSD__ || __OpenBSD__ */
/****************************/
/* *** FreeBSD 4.x code *** */
/****************************/
#if (__FreeBSD_version >= 400000)
static int bktr_probe( device_t dev );
static int bktr_attach( device_t dev );
static int bktr_detach( device_t dev );
static int bktr_shutdown( device_t dev );
static void bktr_intr(void *arg) { common_bktr_intr(arg); }
static device_method_t bktr_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, bktr_probe),
DEVMETHOD(device_attach, bktr_attach),
DEVMETHOD(device_detach, bktr_detach),
DEVMETHOD(device_shutdown, bktr_shutdown),
{ 0, 0 }
};
static driver_t bktr_driver = {
"bktr",
bktr_methods,
sizeof(struct bktr_softc),
};
static devclass_t bktr_devclass;
static d_open_t bktr_open;
static d_close_t bktr_close;
static d_read_t bktr_read;
static d_write_t bktr_write;
static d_ioctl_t bktr_ioctl;
static d_mmap_t bktr_mmap;
static d_poll_t bktr_poll;
#define CDEV_MAJOR 92
static struct cdevsw bktr_cdevsw = {
/* open */ bktr_open,
/* close */ bktr_close,
/* read */ bktr_read,
/* write */ bktr_write,
/* ioctl */ bktr_ioctl,
/* poll */ bktr_poll,
/* mmap */ bktr_mmap,
/* strategy */ nostrategy,
/* name */ "bktr",
/* maj */ CDEV_MAJOR,
/* dump */ nodump,
/* psize */ nopsize,
/* flags */ 0,
/* bmaj */ -1
};
DRIVER_MODULE(bktr, pci, bktr_driver, bktr_devclass, 0, 0);
/*
* the boot time probe routine.
*/
static int
bktr_probe( device_t dev )
{
unsigned int type = pci_get_devid(dev);
unsigned int rev = pci_get_revid(dev);
switch (type) {
case BROOKTREE_848_PCI_ID:
if (rev == 0x12) device_set_desc(dev, "BrookTree 848A");
else device_set_desc(dev, "BrookTree 848");
return 0;
case BROOKTREE_849_PCI_ID:
device_set_desc(dev, "BrookTree 849A");
return 0;
case BROOKTREE_878_PCI_ID:
device_set_desc(dev, "BrookTree 878");
return 0;
case BROOKTREE_879_PCI_ID:
device_set_desc(dev, "BrookTree 879");
return 0;
};
return ENXIO;
}
/*
* the attach routine.
*/
static int
bktr_attach( device_t dev )
{
u_long latency;
u_long fun;
u_long val;
unsigned int rev;
unsigned int unit;
int error = 0;
int rid;
#ifdef BROOKTREE_IRQ
u_long old_irq, new_irq;
#endif
struct bktr_softc *bktr = device_get_softc(dev);
unit = device_get_unit(dev);
/*
* Enable bus mastering and Memory Mapped device
*/
val = pci_read_config(dev, PCIR_COMMAND, 4);
val |= (PCIM_CMD_MEMEN|PCIM_CMD_BUSMASTEREN);
pci_write_config(dev, PCIR_COMMAND, val, 4);
/*
* Map control/status registers.
*/
rid = PCI_MAP_REG_START;
bktr->res_mem = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid,
0, ~0, 1, RF_ACTIVE);
if (!bktr->res_mem) {
device_printf(dev, "could not map memory\n");
error = ENXIO;
goto fail;
}
bktr->memt = rman_get_bustag(bktr->res_mem);
bktr->memh = rman_get_bushandle(bktr->res_mem);
/*
* Disable the brooktree device
*/
OUTL(bktr, BKTR_INT_MASK, ALL_INTS_DISABLED);
OUTW(bktr, BKTR_GPIO_DMA_CTL, FIFO_RISC_DISABLED);
#ifdef BROOKTREE_IRQ /* from the configuration file */
old_irq = pci_conf_read(tag, PCI_INTERRUPT_REG);
pci_conf_write(tag, PCI_INTERRUPT_REG, BROOKTREE_IRQ);
new_irq = pci_conf_read(tag, PCI_INTERRUPT_REG);
printf("bktr%d: attach: irq changed from %d to %d\n",
unit, (old_irq & 0xff), (new_irq & 0xff));
#endif
/*
* Allocate our interrupt.
*/
rid = 0;
bktr->res_irq = bus_alloc_resource(dev, SYS_RES_IRQ, &rid, 0, ~0, 1,
RF_SHAREABLE | RF_ACTIVE);
if (bktr->res_irq == NULL) {
device_printf(dev, "could not map interrupt\n");
error = ENXIO;
goto fail;
}
error = bus_setup_intr(dev, bktr->res_irq, INTR_TYPE_TTY,
bktr_intr, bktr, &bktr->res_ih);
if (error) {
device_printf(dev, "could not setup irq\n");
goto fail;
}
/* Update the Device Control Register */
/* on Bt878 and Bt879 cards */
fun = pci_read_config( dev, 0x40, 2);
fun = fun | 1; /* Enable writes to the sub-system vendor ID */
#if defined( BKTR_430_FX_MODE )
if (bootverbose) printf("Using 430 FX chipset compatibilty mode\n");
fun = fun | 2; /* Enable Intel 430 FX compatibility mode */
#endif
#if defined( BKTR_SIS_VIA_MODE )
if (bootverbose) printf("Using SiS/VIA chipset compatibilty mode\n");
fun = fun | 4; /* Enable SiS/VIA compatibility mode (usefull for
OPTi chipset motherboards too */
#endif
pci_write_config(dev, 0x40, fun, 2);
/* XXX call bt848_i2c dependent attach() routine */
#if (NSMBUS > 0)
if (bt848_i2c_attach(unit, bktr, &bktr->i2c_sc))
printf("bktr%d: i2c_attach: can't attach\n", unit);
#endif
/*
* PCI latency timer. 32 is a good value for 4 bus mastering slots, if
* you have more than four, then 16 would probably be a better value.
*/
#ifndef BROOKTREE_DEF_LATENCY_VALUE
#define BROOKTREE_DEF_LATENCY_VALUE 10
#endif
latency = pci_read_config(dev, PCI_LATENCY_TIMER, 4);
latency = (latency >> 8) & 0xff;
if ( bootverbose ) {
if (latency)
printf("brooktree%d: PCI bus latency is", unit);
else
printf("brooktree%d: PCI bus latency was 0 changing to",
unit);
}
if ( !latency ) {
latency = BROOKTREE_DEF_LATENCY_VALUE;
pci_write_config(dev, PCI_LATENCY_TIMER, latency<<8, 4);
}
if ( bootverbose ) {
printf(" %d.\n", (int) latency);
}
/* read the pci device id and revision id */
fun = pci_get_devid(dev);
rev = pci_get_revid(dev);
/* call the common attach code */
common_bktr_attach( bktr, unit, fun, rev );
make_dev(&bktr_cdevsw, unit, 0, 0, 0444, "bktr%d", unit);
make_dev(&bktr_cdevsw, unit+16, 0, 0, 0444, "tuner%d", unit);
make_dev(&bktr_cdevsw, unit+32, 0, 0, 0444, "vbi%d", unit);
return 0;
fail:
return error;
}
/*
* the detach routine.
*/
static int
bktr_detach( device_t dev )
{
struct bktr_softc *bktr = device_get_softc(dev);
/* Disable the brooktree device */
OUTL(bktr, BKTR_INT_MASK, ALL_INTS_DISABLED);
OUTW(bktr, BKTR_GPIO_DMA_CTL, FIFO_RISC_DISABLED);
/* FIXME - Free memory for RISC programs, grab buffer, vbi buffers */
/*
* Deallocate resources.
*/
bus_teardown_intr(dev, bktr->res_irq, bktr->res_ih);
bus_release_resource(dev, SYS_RES_IRQ, 0, bktr->res_irq);
bus_release_resource(dev, SYS_RES_MEMORY, PCI_MAP_REG_START, bktr->res_mem);
return 0;
}
/*
* the shutdown routine.
*/
static int
bktr_shutdown( device_t dev )
{
struct bktr_softc *bktr = device_get_softc(dev);
/* Disable the brooktree device */
OUTL(bktr, BKTR_INT_MASK, ALL_INTS_DISABLED);
OUTW(bktr, BKTR_GPIO_DMA_CTL, FIFO_RISC_DISABLED);
return 0;
}
/*
* Special Memory Allocation
*/
vm_offset_t
get_bktr_mem( int unit, unsigned size )
{
vm_offset_t addr = 0;
addr = vm_page_alloc_contig(size, 0, 0xffffffff, 1<<24);
if (addr == 0)
addr = vm_page_alloc_contig(size, 0, 0xffffffff, PAGE_SIZE);
if (addr == 0) {
printf("bktr%d: Unable to allocate %d bytes of memory.\n",
unit, size);
}
return( addr );
}
/*---------------------------------------------------------
**
** BrookTree 848 character device driver routines
**
**---------------------------------------------------------
*/
#define VIDEO_DEV 0x00
#define TUNER_DEV 0x01
#define VBI_DEV 0x02
#define UNIT(x) ((x) & 0x0f)
#define FUNCTION(x) (x >> 4)
/*
*
*/
int
bktr_open( dev_t dev, int flags, int fmt, struct proc *p )
{
bktr_ptr_t bktr;
int unit;
int result;
unit = UNIT( minor(dev) );
/* Get the device data */
bktr = (struct bktr_softc*)devclass_get_softc(bktr_devclass, unit);
if (bktr == NULL) {
/* the device is no longer valid/functioning */
return (ENXIO);
}
if (!(bktr->flags & METEOR_INITALIZED)) /* device not found */
return( ENXIO );
/* Record that the device is now busy */
device_busy(devclass_get_device(bktr_devclass, unit));
if (bt848_card != -1) {
if ((bt848_card >> 8 == unit ) &&
( (bt848_card & 0xff) < Bt848_MAX_CARD )) {
if ( bktr->bt848_card != (bt848_card & 0xff) ) {
bktr->bt848_card = (bt848_card & 0xff);
probeCard(bktr, FALSE, unit);
}
}
}
if (bt848_tuner != -1) {
if ((bt848_tuner >> 8 == unit ) &&
( (bt848_tuner & 0xff) < Bt848_MAX_TUNER )) {
if ( bktr->bt848_tuner != (bt848_tuner & 0xff) ) {
bktr->bt848_tuner = (bt848_tuner & 0xff);
probeCard(bktr, FALSE, unit);
}
}
}
if (bt848_reverse_mute != -1) {
if ((bt848_reverse_mute >> 8) == unit ) {
bktr->reverse_mute = bt848_reverse_mute & 0xff;
}
}
if (bt848_slow_msp_audio != -1) {
if ((bt848_slow_msp_audio >> 8) == unit ) {
bktr->slow_msp_audio = (bt848_slow_msp_audio & 0xff);
}
}
switch ( FUNCTION( minor(dev) ) ) {
case VIDEO_DEV:
result = video_open( bktr );
break;
case TUNER_DEV:
result = tuner_open( bktr );
break;
case VBI_DEV:
result = vbi_open( bktr );
break;
default:
result = ENXIO;
break;
}
/* If there was an error opening the device, undo the busy status */
if (result != 0)
device_unbusy(devclass_get_device(bktr_devclass, unit));
return( result );
}
/*
*
*/
int
bktr_close( dev_t dev, int flags, int fmt, struct proc *p )
{
bktr_ptr_t bktr;
int unit;
int result;
unit = UNIT( minor(dev) );
/* Get the device data */
bktr = (struct bktr_softc*)devclass_get_softc(bktr_devclass, unit);
if (bktr == NULL) {
/* the device is no longer valid/functioning */
return (ENXIO);
}
switch ( FUNCTION( minor(dev) ) ) {
case VIDEO_DEV:
result = video_close( bktr );
break;
case TUNER_DEV:
result = tuner_close( bktr );
break;
case VBI_DEV:
result = vbi_close( bktr );
break;
default:
return (ENXIO);
break;
}
device_unbusy(devclass_get_device(bktr_devclass, unit));
return( result );
}
/*
*
*/
int
bktr_read( dev_t dev, struct uio *uio, int ioflag )
{
bktr_ptr_t bktr;
int unit;
unit = UNIT(minor(dev));
/* Get the device data */
bktr = (struct bktr_softc*)devclass_get_softc(bktr_devclass, unit);
if (bktr == NULL) {
/* the device is no longer valid/functioning */
return (ENXIO);
}
switch ( FUNCTION( minor(dev) ) ) {
case VIDEO_DEV:
return( video_read( bktr, unit, dev, uio ) );
case VBI_DEV:
return( vbi_read( bktr, uio, ioflag ) );
}
return( ENXIO );
}
/*
*
*/
int
bktr_write( dev_t dev, struct uio *uio, int ioflag )
{
return( EINVAL ); /* XXX or ENXIO ? */
}
/*
*
*/
int
bktr_ioctl( dev_t dev, ioctl_cmd_t cmd, caddr_t arg, int flag, struct proc* pr )
{
bktr_ptr_t bktr;
int unit;
unit = UNIT(minor(dev));
/* Get the device data */
bktr = (struct bktr_softc*)devclass_get_softc(bktr_devclass, unit);
if (bktr == NULL) {
/* the device is no longer valid/functioning */
return (ENXIO);
}
if (bktr->bigbuf == 0) /* no frame buffer allocated (ioctl failed) */
return( ENOMEM );
switch ( FUNCTION( minor(dev) ) ) {
case VIDEO_DEV:
return( video_ioctl( bktr, unit, cmd, arg, pr ) );
case TUNER_DEV:
return( tuner_ioctl( bktr, unit, cmd, arg, pr ) );
}
return( ENXIO );
}
/*
*
*/
int
bktr_mmap( dev_t dev, vm_offset_t offset, int nprot )
{
int unit;
bktr_ptr_t bktr;
unit = UNIT(minor(dev));
if (FUNCTION(minor(dev)) > 0) /* only allow mmap on /dev/bktr[n] */
return( -1 );
/* Get the device data */
bktr = (struct bktr_softc*)devclass_get_softc(bktr_devclass, unit);
if (bktr == NULL) {
/* the device is no longer valid/functioning */
return (ENXIO);
}
if (nprot & PROT_EXEC)
return( -1 );
if (offset < 0)
return( -1 );
if (offset >= bktr->alloc_pages * PAGE_SIZE)
return( -1 );
return( atop(vtophys(bktr->bigbuf) + offset) );
}
int bktr_poll( dev_t dev, int events, struct proc *p)
{
int unit;
bktr_ptr_t bktr;
int revents = 0;
DECLARE_INTR_MASK(s);
unit = UNIT(minor(dev));
/* Get the device data */
bktr = (struct bktr_softc*)devclass_get_softc(bktr_devclass, unit);
if (bktr == NULL) {
/* the device is no longer valid/functioning */
return (ENXIO);
}
DISABLE_INTR(s);
if (events & (POLLIN | POLLRDNORM)) {
switch ( FUNCTION( minor(dev) ) ) {
case VBI_DEV:
if(bktr->vbisize == 0)
selrecord(p, &bktr->vbi_select);
else
revents |= events & (POLLIN | POLLRDNORM);
break;
}
}
ENABLE_INTR(s);
return (revents);
}
#endif /* FreeBSD 4.x specific kernel interface routines */
/**********************************/
/* *** FreeBSD 2.2.x and 3.x *** */
/**********************************/
#if ((__FreeBSD__ == 2) || (__FreeBSD__ == 3))
static bktr_reg_t brooktree[ NBKTR ];
static const char* bktr_probe( pcici_t tag, pcidi_t type );
static void bktr_attach( pcici_t tag, int unit );
static void bktr_intr(void *arg) { common_bktr_intr(arg); }
static u_long bktr_count;
static struct pci_device bktr_device = {
"bktr",
bktr_probe,
bktr_attach,
&bktr_count
};
DATA_SET (pcidevice_set, bktr_device);
static d_open_t bktr_open;
static d_close_t bktr_close;
static d_read_t bktr_read;
static d_write_t bktr_write;
static d_ioctl_t bktr_ioctl;
static d_mmap_t bktr_mmap;
static d_poll_t bktr_poll;
#define CDEV_MAJOR 92
static struct cdevsw bktr_cdevsw =
{
bktr_open, bktr_close, bktr_read, bktr_write,
bktr_ioctl, nostop, nullreset, nodevtotty,
bktr_poll, bktr_mmap, NULL, "bktr",
NULL, -1
};
static int bktr_devsw_installed;
static void
bktr_drvinit( void *unused )
{
dev_t dev;
if ( ! bktr_devsw_installed ) {
dev = makedev(CDEV_MAJOR, 0);
cdevsw_add(&dev,&bktr_cdevsw, NULL);
bktr_devsw_installed = 1;
}
}
SYSINIT(bktrdev,SI_SUB_DRIVERS,SI_ORDER_MIDDLE+CDEV_MAJOR,bktr_drvinit,NULL)
/*
* the boot time probe routine.
*/
static const char*
bktr_probe( pcici_t tag, pcidi_t type )
{
unsigned int rev = pci_conf_read( tag, PCIR_REVID) & 0x000000ff;
switch (type) {
case BROOKTREE_848_PCI_ID:
if (rev == 0x12) return("BrookTree 848A");
else return("BrookTree 848");
case BROOKTREE_849_PCI_ID:
return("BrookTree 849A");
case BROOKTREE_878_PCI_ID:
return("BrookTree 878");
case BROOKTREE_879_PCI_ID:
return("BrookTree 879");
};
return ((char *)0);
}
/*
* the attach routine.
*/
static void
bktr_attach( pcici_t tag, int unit )
{
bktr_ptr_t bktr;
u_long latency;
u_long fun;
unsigned int rev;
unsigned long base;
#ifdef BROOKTREE_IRQ
u_long old_irq, new_irq;
#endif
bktr = &brooktree[unit];
if (unit >= NBKTR) {
printf("brooktree%d: attach: only %d units configured.\n",
unit, NBKTR);
printf("brooktree%d: attach: invalid unit number.\n", unit);
return;
}
/* Enable Memory Mapping */
fun = pci_conf_read(tag, PCI_COMMAND_STATUS_REG);
pci_conf_write(tag, PCI_COMMAND_STATUS_REG, fun | 2);
/* Enable Bus Mastering */
fun = pci_conf_read(tag, PCI_COMMAND_STATUS_REG);
pci_conf_write(tag, PCI_COMMAND_STATUS_REG, fun | 4);
bktr->tag = tag;
/*
* Map control/status registers
*/
pci_map_mem( tag, PCI_MAP_REG_START, (vm_offset_t *) &base,
&bktr->phys_base );
#if (__FreeBSD_version >= 300000)
bktr->memt = I386_BUS_SPACE_MEM; /* XXX should use proper bus space */
bktr->memh = (bus_space_handle_t)base; /* XXX functions here */
#endif
/*
* Disable the brooktree device
*/
OUTL(bktr, BKTR_INT_MASK, ALL_INTS_DISABLED);
OUTW(bktr, BKTR_GPIO_DMA_CTL, FIFO_RISC_DISABLED);
#ifdef BROOKTREE_IRQ /* from the configuration file */
old_irq = pci_conf_read(tag, PCI_INTERRUPT_REG);
pci_conf_write(tag, PCI_INTERRUPT_REG, BROOKTREE_IRQ);
new_irq = pci_conf_read(tag, PCI_INTERRUPT_REG);
printf("bktr%d: attach: irq changed from %d to %d\n",
unit, (old_irq & 0xff), (new_irq & 0xff));
#endif
/*
* setup the interrupt handling routine
*/
pci_map_int(tag, bktr_intr, (void*) bktr, &tty_imask);
/* Update the Device Control Register */
/* on Bt878 and Bt879 cards */
fun = pci_conf_read(tag, 0x40);
fun = fun | 1; /* Enable writes to the sub-system vendor ID */
#if defined( BKTR_430_FX_MODE )
if (bootverbose) printf("Using 430 FX chipset compatibilty mode\n");
fun = fun | 2; /* Enable Intel 430 FX compatibility mode */
#endif
#if defined( BKTR_SIS_VIA_MODE )
if (bootverbose) printf("Using SiS/VIA chipset compatibilty mode\n");
fun = fun | 4; /* Enable SiS/VIA compatibility mode (usefull for
OPTi chipset motherboards too */
#endif
pci_conf_write(tag, 0x40, fun);
/* XXX call bt848_i2c dependent attach() routine */
#if (NSMBUS > 0)
if (bt848_i2c_attach(unit, bktr, &bktr->i2c_sc))
printf("bktr%d: i2c_attach: can't attach\n", unit);
#endif
/*
* PCI latency timer. 32 is a good value for 4 bus mastering slots, if
* you have more than four, then 16 would probably be a better value.
*/
#ifndef BROOKTREE_DEF_LATENCY_VALUE
#define BROOKTREE_DEF_LATENCY_VALUE 10
#endif
latency = pci_conf_read(tag, PCI_LATENCY_TIMER);
latency = (latency >> 8) & 0xff;
if ( bootverbose ) {
if (latency)
printf("brooktree%d: PCI bus latency is", unit);
else
printf("brooktree%d: PCI bus latency was 0 changing to",
unit);
}
if ( !latency ) {
latency = BROOKTREE_DEF_LATENCY_VALUE;
pci_conf_write(tag, PCI_LATENCY_TIMER, latency<<8);
}
if ( bootverbose ) {
printf(" %d.\n", (int) latency);
}
/* read the pci device id and revision id */
fun = pci_conf_read(tag, PCI_ID_REG);
rev = pci_conf_read(tag, PCIR_REVID) & 0x000000ff;
/* call the common attach code */
common_bktr_attach( bktr, unit, fun, rev );
#ifdef DEVFS
/* XXX This just throw away the token, which should probably be fixed when
DEVFS is finally made really operational. */
devfs_add_devswf(&bktr_cdevsw, unit, DV_CHR, 0, 0, 0444, "bktr%d", unit);
devfs_add_devswf(&bktr_cdevsw, unit+16, DV_CHR, 0, 0, 0444, "tuner%d", unit);
devfs_add_devswf(&bktr_cdevsw, unit+32, DV_CHR, 0, 0, 0444, "vbi%d", unit);
#endif /* DEVFS */
}
/*
* Special Memory Allocation
*/
vm_offset_t
get_bktr_mem( int unit, unsigned size )
{
vm_offset_t addr = 0;
addr = vm_page_alloc_contig(size, 0x100000, 0xffffffff, 1<<24);
if (addr == 0)
addr = vm_page_alloc_contig(size, 0x100000, 0xffffffff,
PAGE_SIZE);
if (addr == 0) {
printf("bktr%d: Unable to allocate %d bytes of memory.\n",
unit, size);
}
return( addr );
}
/*---------------------------------------------------------
**
** BrookTree 848 character device driver routines
**
**---------------------------------------------------------
*/
#define VIDEO_DEV 0x00
#define TUNER_DEV 0x01
#define VBI_DEV 0x02
#define UNIT(x) ((x) & 0x0f)
#define FUNCTION(x) ((x >> 4) & 0x0f)
/*
*
*/
int
bktr_open( dev_t dev, int flags, int fmt, struct proc *p )
{
bktr_ptr_t bktr;
int unit;
unit = UNIT( minor(dev) );
if (unit >= NBKTR) /* unit out of range */
return( ENXIO );
bktr = &(brooktree[ unit ]);
if (!(bktr->flags & METEOR_INITALIZED)) /* device not found */
return( ENXIO );
if (bt848_card != -1) {
if ((bt848_card >> 8 == unit ) &&
( (bt848_card & 0xff) < Bt848_MAX_CARD )) {
if ( bktr->bt848_card != (bt848_card & 0xff) ) {
bktr->bt848_card = (bt848_card & 0xff);
probeCard(bktr, FALSE, unit);
}
}
}
if (bt848_tuner != -1) {
if ((bt848_tuner >> 8 == unit ) &&
( (bt848_tuner & 0xff) < Bt848_MAX_TUNER )) {
if ( bktr->bt848_tuner != (bt848_tuner & 0xff) ) {
bktr->bt848_tuner = (bt848_tuner & 0xff);
probeCard(bktr, FALSE, unit);
}
}
}
if (bt848_reverse_mute != -1) {
if ((bt848_reverse_mute >> 8) == unit ) {
bktr->reverse_mute = bt848_reverse_mute & 0xff;
}
}
if (bt848_slow_msp_audio != -1) {
if ((bt848_slow_msp_audio >> 8) == unit ) {
bktr->slow_msp_audio = (bt848_slow_msp_audio & 0xff);
}
}
switch ( FUNCTION( minor(dev) ) ) {
case VIDEO_DEV:
return( video_open( bktr ) );
case TUNER_DEV:
return( tuner_open( bktr ) );
case VBI_DEV:
return( vbi_open( bktr ) );
}
return( ENXIO );
}
/*
*
*/
int
bktr_close( dev_t dev, int flags, int fmt, struct proc *p )
{
bktr_ptr_t bktr;
int unit;
unit = UNIT( minor(dev) );
if (unit >= NBKTR) /* unit out of range */
return( ENXIO );
bktr = &(brooktree[ unit ]);
switch ( FUNCTION( minor(dev) ) ) {
case VIDEO_DEV:
return( video_close( bktr ) );
case TUNER_DEV:
return( tuner_close( bktr ) );
case VBI_DEV:
return( vbi_close( bktr ) );
}
return( ENXIO );
}
/*
*
*/
int
bktr_read( dev_t dev, struct uio *uio, int ioflag )
{
bktr_ptr_t bktr;
int unit;
unit = UNIT(minor(dev));
if (unit >= NBKTR) /* unit out of range */
return( ENXIO );
bktr = &(brooktree[unit]);
switch ( FUNCTION( minor(dev) ) ) {
case VIDEO_DEV:
return( video_read( bktr, unit, dev, uio ) );
case VBI_DEV:
return( vbi_read( bktr, uio, ioflag ) );
}
return( ENXIO );
}
/*
*
*/
int
bktr_write( dev_t dev, struct uio *uio, int ioflag )
{
return( EINVAL ); /* XXX or ENXIO ? */
}
/*
*
*/
int
bktr_ioctl( dev_t dev, ioctl_cmd_t cmd, caddr_t arg, int flag, struct proc* pr )
{
bktr_ptr_t bktr;
int unit;
unit = UNIT(minor(dev));
if (unit >= NBKTR) /* unit out of range */
return( ENXIO );
bktr = &(brooktree[ unit ]);
if (bktr->bigbuf == 0) /* no frame buffer allocated (ioctl failed) */
return( ENOMEM );
switch ( FUNCTION( minor(dev) ) ) {
case VIDEO_DEV:
return( video_ioctl( bktr, unit, cmd, arg, pr ) );
case TUNER_DEV:
return( tuner_ioctl( bktr, unit, cmd, arg, pr ) );
}
return( ENXIO );
}
/*
* bktr_mmap.
* Note: 2.2.5/2.2.6/2.2.7/3.0 users must manually
* edit the line below and change "vm_offset_t" to "int"
*/
int bktr_mmap( dev_t dev, vm_offset_t offset, int nprot )
{
int unit;
bktr_ptr_t bktr;
unit = UNIT(minor(dev));
if (unit >= NBKTR || FUNCTION(minor(dev)) > 0)
return( -1 );
bktr = &(brooktree[ unit ]);
if (nprot & PROT_EXEC)
return( -1 );
if (offset < 0)
return( -1 );
if (offset >= bktr->alloc_pages * PAGE_SIZE)
return( -1 );
return( i386_btop(vtophys(bktr->bigbuf) + offset) );
}
int bktr_poll( dev_t dev, int events, struct proc *p)
{
int unit;
bktr_ptr_t bktr;
int revents = 0;
unit = UNIT(minor(dev));
if (unit >= NBKTR)
return( -1 );
bktr = &(brooktree[ unit ]);
disable_intr();
if (events & (POLLIN | POLLRDNORM)) {
switch ( FUNCTION( minor(dev) ) ) {
case VBI_DEV:
if(bktr->vbisize == 0)
selrecord(p, &bktr->vbi_select);
else
revents |= events & (POLLIN | POLLRDNORM);
break;
}
}
enable_intr();
return (revents);
}
#endif /* FreeBSD 2.2.x and 3.x specific kernel interface routines */
/*****************/
/* *** BSDI *** */
/*****************/
#if defined(__bsdi__)
#endif /* __bsdi__ BSDI specific kernel interface routines */
/*****************************/
/* *** OpenBSD / NetBSD *** */
/*****************************/
#if defined(__NetBSD__) || defined(__OpenBSD__)
#define IPL_VIDEO IPL_BIO /* XXX */
static int bktr_intr(void *arg) { return common_bktr_intr(arg); }
#define bktr_open bktropen
#define bktr_close bktrclose
#define bktr_read bktrread
#define bktr_write bktrwrite
#define bktr_ioctl bktrioctl
#define bktr_mmap bktrmmap
int bktr_open __P((dev_t, int, int, struct proc *));
int bktr_close __P((dev_t, int, int, struct proc *));
int bktr_read __P((dev_t, struct uio *, int));
int bktr_write __P((dev_t, struct uio *, int));
int bktr_ioctl __P((dev_t, ioctl_cmd_t, caddr_t, int, struct proc*));
int bktr_mmap __P((dev_t, vm_offset_t, int));
vm_offset_t vm_page_alloc_contig(vm_offset_t, vm_offset_t,
vm_offset_t, vm_offset_t);
#if defined(__BROKEN_INDIRECT_CONFIG) || defined(__OpenBSD__)
static int bktr_probe __P((struct device *, void *, void *));
#else
static int bktr_probe __P((struct device *, struct cfdata *, void *));
#endif
static void bktr_attach __P((struct device *, struct device *, void *));
struct cfattach bktr_ca = {
sizeof(struct bktr_softc), bktr_probe, bktr_attach
};
#if defined(__NetBSD__)
extern struct cfdriver bktr_cd;
#else
struct cfdriver bktr_cd = {
NULL, "bktr", DV_DULL
};
#endif
int bktr_probe(parent, match, aux)
struct device *parent;
#if defined(__BROKEN_INDIRECT_CONFIG) || defined(__OpenBSD__)
void *match;
#else
struct cfdata *match;
#endif
void *aux;
{
struct pci_attach_args *pa = aux;
if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_BROOKTREE &&
(PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_BROOKTREE_BT848 ||
PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_BROOKTREE_BT849 ||
PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_BROOKTREE_BT878 ||
PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_BROOKTREE_BT879))
return 1;
return 0;
}
/*
* the attach routine.
*/
static void
bktr_attach __P((struct device *parent, struct device *self, void *aux))
{
bktr_ptr_t bktr;
u_long latency;
u_long fun;
unsigned int rev;
#if defined(__OpenBSD__)
struct pci_attach_args *pa = aux;
pci_chipset_tag_t pc = pa->pa_pc;
pci_intr_handle_t ih;
const char *intrstr;
int retval;
int unit;
bktr = (bktr_ptr_t)self;
unit = bktr->bktr_dev.dv_unit;
bktr->pc = pa->pa_pc;
bktr->tag = pa->pa_tag;
bktr->dmat = pa->pa_dmat;
/*
* map memory
*/
bktr->memt = pa->pa_memt;
retval = pci_mem_find(pc, pa->pa_tag, PCI_MAPREG_START,
&bktr->phys_base, &bktr->obmemsz, NULL);
if (!retval)
retval = bus_space_map(pa->pa_memt, bktr->phys_base,
bktr->obmemsz, 0, &bktr->memh);
if (retval) {
printf(": couldn't map memory\n");
return;
}
/*
* map interrupt
*/
if (pci_intr_map(pa->pa_pc, pa->pa_intrtag, pa->pa_intrpin,
pa->pa_intrline, &ih)) {
printf(": couldn't map interrupt\n");
return;
}
intrstr = pci_intr_string(pa->pa_pc, ih);
bktr->ih = pci_intr_establish(pa->pa_pc, ih, IPL_VIDEO,
bktr_intr, bktr, bktr->bktr_dev.dv_xname);
if (bktr->ih == NULL) {
printf(": couldn't establish interrupt");
if (intrstr != NULL)
printf(" at %s", intrstr);
printf("\n");
return;
}
if (intrstr != NULL)
printf(": %s\n", intrstr);
#endif /* __OpenBSD__ */
#if defined(__NetBSD__)
struct pci_attach_args *pa = aux;
pci_intr_handle_t ih;
const char *intrstr;
int retval;
int unit;
bktr = (bktr_ptr_t)self;
unit = bktr->bktr_dev.dv_unit;
bktr->dmat = pa->pa_dmat;
printf("\n");
/*
* map memory
*/
retval = pci_mapreg_map(pa, PCI_MAPREG_START,
PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_32BIT, 0,
&bktr->memt, &bktr->memh, &bktr->phys_base,
&bktr->obmemsz);
DPR(("pci_mapreg_map: memt %x, memh %x, base %x, size %x\n",
bktr->memt, (u_int)bktr->memh,
(u_int)bktr->phys_base, (u_int)bktr->obmemsz));
if (retval) {
printf("%s: couldn't map memory\n", bktr->bktr_dev.dv_xname);
return;
}
/*
* Disable the brooktree device
*/
OUTL(bktr, BKTR_INT_MASK, ALL_INTS_DISABLED);
OUTW(bktr, BKTR_GPIO_DMA_CTL, FIFO_RISC_DISABLED);
/*
* map interrupt
*/
if (pci_intr_map(pa->pa_pc, pa->pa_intrtag, pa->pa_intrpin,
pa->pa_intrline, &ih)) {
printf("%s: couldn't map interrupt\n", bktr->bktr_dev.dv_xname);
return;
}
intrstr = pci_intr_string(pa->pa_pc, ih);
bktr->ih = pci_intr_establish(pa->pa_pc, ih, IPL_VIDEO,
bktr_intr, bktr);
if (bktr->ih == NULL) {
printf("%s: couldn't establish interrupt",
bktr->bktr_dev.dv_xname);
if (intrstr != NULL)
printf(" at %s", intrstr);
printf("\n");
return;
}
if (intrstr != NULL)
printf("%s: interrupting at %s\n", bktr->bktr_dev.dv_xname,
intrstr);
#endif /* __NetBSD__ */
/*
* PCI latency timer. 32 is a good value for 4 bus mastering slots, if
* you have more than four, then 16 would probably be a better value.
*/
#ifndef BROOKTREE_DEF_LATENCY_VALUE
#define BROOKTREE_DEF_LATENCY_VALUE 10
#endif
latency = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_LATENCY_TIMER);
latency = (latency >> 8) & 0xff;
if ( !latency ) {
if ( bootverbose ) {
printf("%s: PCI bus latency was 0 changing to %d",
bktr->bktr_dev.dv_xname,
BROOKTREE_DEF_LATENCY_VALUE);
}
latency = BROOKTREE_DEF_LATENCY_VALUE;
pci_conf_write(pa->pa_pc, pa->pa_tag,
PCI_LATENCY_TIMER, latency<<8);
}
/* Enabled Bus Master and Memory Mapping */
fun = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG);
pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, fun | 2);
fun = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG);
pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, fun | 4);
/* read the pci id and determine the card type */
fun = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_ID_REG);
rev = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_CLASS_REG) & 0x000000ff;
common_bktr_attach( bktr, unit, fun, rev );
}
/*
* Special Memory Allocation
*/
vm_offset_t
get_bktr_mem(bktr, dmapp, size)
bktr_ptr_t bktr;
bus_dmamap_t *dmapp;
unsigned int size;
{
bus_dma_tag_t dmat = bktr->dmat;
bus_dma_segment_t seg;
bus_size_t align;
int rseg;
caddr_t kva;
/*
* Allocate a DMA area
*/
align = 1 << 24;
if (bus_dmamem_alloc(dmat, size, align, 0, &seg, 1,
&rseg, BUS_DMA_NOWAIT)) {
align = PAGE_SIZE;
if (bus_dmamem_alloc(dmat, size, align, 0, &seg, 1,
&rseg, BUS_DMA_NOWAIT)) {
printf("bktr%d: Unable to dmamem_alloc of %d bytes\n",
bktr->bktr_dev.dv_unit, size);
return 0;
}
}
if (bus_dmamem_map(dmat, &seg, rseg, size,
&kva, BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) {
printf("bktr%d: Unable to dmamem_map of %d bytes\n",
bktr->bktr_dev.dv_unit, size);
bus_dmamem_free(dmat, &seg, rseg);
return 0;
}
#ifdef __OpenBSD__
bktr->dm_mapsize = size;
#endif
/*
* Create and locd the DMA map for the DMA area
*/
if (bus_dmamap_create(dmat, size, 1, size, 0, BUS_DMA_NOWAIT, dmapp)) {
printf("bktr%d: Unable to dmamap_create of %d bytes\n",
bktr->bktr_dev.dv_unit, size);
bus_dmamem_unmap(dmat, kva, size);
bus_dmamem_free(dmat, &seg, rseg);
return 0;
}
if (bus_dmamap_load(dmat, *dmapp, kva, size, NULL, BUS_DMA_NOWAIT)) {
printf("bktr%d: Unable to dmamap_load of %d bytes\n",
bktr->bktr_dev.dv_unit, size);
bus_dmamem_unmap(dmat, kva, size);
bus_dmamem_free(dmat, &seg, rseg);
bus_dmamap_destroy(dmat, *dmapp);
return 0;
}
return (vm_offset_t)kva;
}
void
free_bktr_mem(bktr, dmap, kva)
bktr_ptr_t bktr;
bus_dmamap_t dmap;
vm_offset_t kva;
{
bus_dma_tag_t dmat = bktr->dmat;
#ifdef __NetBSD__
bus_dmamem_unmap(dmat, (caddr_t)kva, dmap->dm_mapsize);
#else
bus_dmamem_unmap(dmat, (caddr_t)kva, bktr->dm_mapsize);
#endif
bus_dmamem_free(dmat, dmap->dm_segs, 1);
bus_dmamap_destroy(dmat, dmap);
}
/*---------------------------------------------------------
**
** BrookTree 848 character device driver routines
**
**---------------------------------------------------------
*/
#define VIDEO_DEV 0x00
#define TUNER_DEV 0x01
#define VBI_DEV 0x02
#define UNIT(x) ((x) & 0x0f)
#define FUNCTION(x) ((x >> 4) & 0x0f)
/*
*
*/
int
bktr_open( dev_t dev, int flags, int fmt, struct proc *p )
{
bktr_ptr_t bktr;
int unit;
unit = UNIT( minor(dev) );
/* unit out of range */
if ((unit > bktr_cd.cd_ndevs) || (bktr_cd.cd_devs[unit] == NULL))
return( ENXIO );
bktr = bktr_cd.cd_devs[unit];
if (!(bktr->flags & METEOR_INITALIZED)) /* device not found */
return( ENXIO );
switch ( FUNCTION( minor(dev) ) ) {
case VIDEO_DEV:
return( video_open( bktr ) );
case TUNER_DEV:
return( tuner_open( bktr ) );
case VBI_DEV:
return( vbi_open( bktr ) );
}
return( ENXIO );
}
/*
*
*/
int
bktr_close( dev_t dev, int flags, int fmt, struct proc *p )
{
bktr_ptr_t bktr;
int unit;
unit = UNIT( minor(dev) );
/* unit out of range */
if ((unit > bktr_cd.cd_ndevs) || (bktr_cd.cd_devs[unit] == NULL))
return( ENXIO );
bktr = bktr_cd.cd_devs[unit];
switch ( FUNCTION( minor(dev) ) ) {
case VIDEO_DEV:
return( video_close( bktr ) );
case TUNER_DEV:
return( tuner_close( bktr ) );
case VBI_DEV:
return( vbi_close( bktr ) );
}
return( ENXIO );
}
/*
*
*/
int
bktr_read( dev_t dev, struct uio *uio, int ioflag )
{
bktr_ptr_t bktr;
int unit;
unit = UNIT(minor(dev));
/* unit out of range */
if ((unit > bktr_cd.cd_ndevs) || (bktr_cd.cd_devs[unit] == NULL))
return( ENXIO );
bktr = bktr_cd.cd_devs[unit];
switch ( FUNCTION( minor(dev) ) ) {
case VIDEO_DEV:
return( video_read( bktr, unit, dev, uio ) );
case VBI_DEV:
return( vbi_read( bktr, uio, ioflag ) );
}
return( ENXIO );
}
/*
*
*/
int
bktr_write( dev_t dev, struct uio *uio, int ioflag )
{
/* operation not supported */
return( EOPNOTSUPP );
}
/*
*
*/
int
bktr_ioctl( dev_t dev, ioctl_cmd_t cmd, caddr_t arg, int flag, struct proc* pr )
{
bktr_ptr_t bktr;
int unit;
unit = UNIT(minor(dev));
/* unit out of range */
if ((unit > bktr_cd.cd_ndevs) || (bktr_cd.cd_devs[unit] == NULL))
return( ENXIO );
bktr = bktr_cd.cd_devs[unit];
if (bktr->bigbuf == 0) /* no frame buffer allocated (ioctl failed) */
return( ENOMEM );
switch ( FUNCTION( minor(dev) ) ) {
case VIDEO_DEV:
return( video_ioctl( bktr, unit, cmd, arg, pr ) );
case TUNER_DEV:
return( tuner_ioctl( bktr, unit, cmd, arg, pr ) );
}
return( ENXIO );
}
/*
*
*/
int
bktr_mmap( dev_t dev, vm_offset_t offset, int nprot )
{
int unit;
bktr_ptr_t bktr;
unit = UNIT(minor(dev));
/* unit out of range */
if ((unit > bktr_cd.cd_ndevs) || (bktr_cd.cd_devs[unit] == NULL))
return( -1 );
if (FUNCTION(minor(dev)) > 0)
return( -1 );
bktr = bktr_cd.cd_devs[unit];
if (offset < 0)
return( -1 );
if (offset >= bktr->alloc_pages * PAGE_SIZE)
return( -1 );
#ifdef __NetBSD__
return (bus_dmamem_mmap(bktr->dmat, bktr->dm_mem->dm_segs, 1,
offset, nprot, BUS_DMA_WAITOK));
#else
return( i386_btop(vtophys(bktr->bigbuf) + offset) );
#endif
}
#endif /* __NetBSD__ || __OpenBSD__ */