/* $OpenBSD: bktr_os.c,v 1.27 2007/06/18 07:31:14 jakemsr Exp $ */
/* $FreeBSD: src/sys/dev/bktr/bktr_os.c,v 1.20 2000/10/20 08:16:53 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.
*/
#define FIFO_RISC_DISABLED 0
#define ALL_INTS_DISABLED 0
#include "radio.h"
#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/selinfo.h>
#include <sys/vnode.h>
#if NRADIO > 0
#include <sys/radioio.h>
#include <dev/radio_if.h>
#endif
#include <uvm/uvm_extern.h>
#include <sys/device.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcidevs.h>
#ifdef BKTR_DEBUG
int bktr_debug = 1;
#define DPR(x) (bktr_debug ? printf x : 0)
#else
#define DPR(x)
#endif
#include <dev/ic/bt8xx.h> /* OpenBSD location for .h files */
#include <dev/pci/bktr/bktr_reg.h>
#include <dev/pci/bktr/bktr_tuner.h>
#include <dev/pci/bktr/bktr_card.h>
#include <dev/pci/bktr/bktr_audio.h>
#include <dev/pci/bktr/bktr_core.h>
#include <dev/pci/bktr/bktr_os.h>
#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(dev_t, int, int, struct proc *);
int bktr_close(dev_t, int, int, struct proc *);
int bktr_read(dev_t, struct uio *, int);
int bktr_write(dev_t, struct uio *, int);
int bktr_ioctl(dev_t, ioctl_cmd_t, caddr_t, int, struct proc *);
paddr_t bktr_mmap(dev_t, off_t, int);
static int bktr_probe(struct device *, void *, void *);
static void bktr_attach(struct device *, struct device *, void *);
struct cfattach bktr_ca = {
sizeof(struct bktr_softc), bktr_probe, bktr_attach
};
struct cfdriver bktr_cd = {
NULL, "bktr", DV_DULL
};
#if NRADIO > 0
/* for radio(4) */
int bktr_get_info(void *, struct radio_info *);
int bktr_set_info(void *, struct radio_info *);
struct radio_hw_if bktr_hw_if = {
NULL, /* open */
NULL, /* close */
bktr_get_info,
bktr_set_info,
NULL /* search */
};
#endif
int
bktr_probe(parent, match, aux)
struct device *parent;
void *match;
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(struct device *parent, struct device *self, void *aux)
{
bktr_ptr_t bktr;
u_int latency;
u_int fun;
unsigned int rev;
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;
/* Enabled Bus Master
XXX: check if all old DMA is stopped first (e.g. after warm
boot) */
fun = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG);
DPR((" fun=%b", fun, PCI_COMMAND_STATUS_BITS));
pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG,
fun | PCI_COMMAND_MEM_ENABLE | PCI_COMMAND_MASTER_ENABLE |
PCI_COMMAND_BACKTOBACK_ENABLE);
/*
* map memory
*/
retval = pci_mapreg_map(pa, PCI_MAPREG_START, PCI_MAPREG_TYPE_MEM |
PCI_MAPREG_MEM_TYPE_32BIT, 0, &bktr->memt, &bktr->memh, NULL,
&bktr->obmemsz, 0);
DPR(("pci_mapreg_map: memt %lx, memh %lx, size %x\n",
bktr->memt, bktr->memh, bktr->obmemsz));
if (retval) {
printf("%s: couldn't map memory\n", bktr_name(bktr));
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, &ih)) {
printf("%s: couldn't map interrupt\n",
bktr_name(bktr));
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("%s: couldn't establish interrupt",
bktr_name(bktr));
if (intrstr != NULL)
printf(" at %s", intrstr);
printf("\n");
return;
}
if (intrstr != NULL)
printf(": %s\n", intrstr);
/*
* 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 0x10
#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_name(bktr), BROOKTREE_DEF_LATENCY_VALUE);
}
latency = BROOKTREE_DEF_LATENCY_VALUE;
pci_conf_write(pa->pa_pc, pa->pa_tag,
PCI_LATENCY_TIMER, latency<<8);
}
/* read the pci id and determine the card type */
fun = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_ID_REG);
rev = PCI_REVISION(pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_CLASS_REG));
common_bktr_attach(bktr, unit, fun, rev);
#if NRADIO > 0
if (bktr->card.tuner->pllControl[3] != 0x00)
radio_attach_mi(&bktr_hw_if, bktr, &bktr->bktr_dev);
#endif
}
/*
* Special Memory Allocation
*/
vaddr_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("%s: Unable to dmamem_alloc of %d bytes\n",
bktr_name(bktr), size);
return 0;
}
}
if (bus_dmamem_map(dmat, &seg, rseg, size,
&kva, BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) {
printf("%s: Unable to dmamem_map of %d bytes\n",
bktr_name(bktr), size);
bus_dmamem_free(dmat, &seg, rseg);
return 0;
}
/*
* Create and locd the DMA map for the DMA area
*/
if (bus_dmamap_create(dmat, size, 1, size, 0, BUS_DMA_NOWAIT, dmapp)) {
printf("%s: Unable to dmamap_create of %d bytes\n",
bktr_name(bktr), 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("%s: Unable to dmamap_load of %d bytes\n",
bktr_name(bktr), size);
bus_dmamem_unmap(dmat, kva, size);
bus_dmamem_free(dmat, &seg, rseg);
bus_dmamap_destroy(dmat, *dmapp);
return 0;
}
return (vaddr_t)kva;
}
void
free_bktr_mem(bktr, dmap, kva)
bktr_ptr_t bktr;
bus_dmamap_t dmap;
vaddr_t kva;
{
bus_dma_tag_t dmat = bktr->dmat;
bus_dmamem_unmap(dmat, (caddr_t)kva, dmap->dm_mapsize);
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) (minor((x) & 0x0f))
#define FUNCTION(x) (minor((x >> 4) & 0x0f))
/*
*
*/
int
bktr_open(dev_t dev, int flags, int fmt, struct proc *p)
{
bktr_ptr_t bktr;
int unit;
unit = UNIT(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(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(dev);
bktr = bktr_cd.cd_devs[unit];
switch (FUNCTION(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(dev);
bktr = bktr_cd.cd_devs[unit];
switch (FUNCTION(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(dev);
bktr = bktr_cd.cd_devs[unit];
if (bktr->bigbuf == 0) /* no frame buffer allocated (ioctl failed) */
return(ENOMEM);
switch (FUNCTION(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);
}
/*
*
*/
paddr_t
bktr_mmap(dev_t dev, off_t offset, int nprot)
{
int unit;
bktr_ptr_t bktr;
unit = UNIT(dev);
if (FUNCTION(dev) > 0) /* only allow mmap on /dev/bktr[n] */
return(-1);
bktr = bktr_cd.cd_devs[unit];
if ((vaddr_t)offset < 0)
return(-1);
if ((vaddr_t)offset >= bktr->alloc_pages * PAGE_SIZE)
return(-1);
return (bus_dmamem_mmap(bktr->dmat, bktr->dm_mem->dm_segs, 1,
(vaddr_t)offset, nprot, BUS_DMA_WAITOK));
}
#if NRADIO > 0
int
bktr_set_info(void *v, struct radio_info *ri)
{
struct bktr_softc *sc = v;
struct TVTUNER *tv = &sc->tuner;
u_int32_t freq;
u_int32_t chan;
if (ri->mute) {
/* mute the audio stream by switching the mux */
set_audio(sc, AUDIO_MUTE);
} else {
/* unmute the audio stream */
set_audio(sc, AUDIO_UNMUTE);
init_audio_devices(sc);
}
set_audio(sc, AUDIO_INTERN); /* use internal audio */
temp_mute(sc, TRUE);
if (ri->tuner_mode == RADIO_TUNER_MODE_TV) {
if (ri->chan) {
if (ri->chan < MIN_TV_CHAN)
ri->chan = MIN_TV_CHAN;
if (ri->chan > MAX_TV_CHAN)
ri->chan = MAX_TV_CHAN;
chan = ri->chan;
ri->chan = tv_channel(sc, chan);
tv->tuner_mode = BT848_TUNER_MODE_TV;
} else {
ri->chan = tv->channel;
}
} else {
if (ri->freq) {
if (ri->freq < MIN_FM_FREQ)
ri->freq = MIN_FM_FREQ;
if (ri->freq > MAX_FM_FREQ)
ri->freq = MAX_FM_FREQ;
freq = ri->freq / 10;
ri->freq = tv_freq(sc, freq, FM_RADIO_FREQUENCY) * 10;
tv->tuner_mode = BT848_TUNER_MODE_RADIO;
} else {
ri->freq = tv->frequency;
}
}
if (ri->chnlset >= CHNLSET_MIN && ri->chnlset <= CHNLSET_MAX)
tv->chnlset = ri->chnlset;
else
tv->chnlset = DEFAULT_CHNLSET;
temp_mute(sc, FALSE);
return (0);
}
int
bktr_get_info(void *v, struct radio_info *ri)
{
struct bktr_softc *sc = v;
struct TVTUNER *tv = &sc->tuner;
int status;
status = get_tuner_status(sc);
#define STATUSBIT_STEREO 0x10
ri->mute = (int)sc->audio_mute_state ? 1 : 0;
ri->caps = RADIO_CAPS_DETECT_STEREO | RADIO_CAPS_HW_AFC;
ri->info = (status & STATUSBIT_STEREO) ? RADIO_INFO_STEREO : 0;
/* not yet supported */
ri->volume = ri->rfreq = ri->lock = 0;
switch (tv->tuner_mode) {
case BT848_TUNER_MODE_TV:
ri->tuner_mode = RADIO_TUNER_MODE_TV;
ri->freq = tv->frequency * 1000 / 16;
break;
case BT848_TUNER_MODE_RADIO:
ri->tuner_mode = RADIO_TUNER_MODE_RADIO;
ri->freq = tv->frequency * 10;
break;
}
/*
* The field ri->stereo is used to forcible switch to
* mono/stereo, not as an indicator of received signal quality.
* The ri->info is for that purpose.
*/
ri->stereo = 1; /* Can't switch to mono, always stereo */
ri->chan = tv->channel;
ri->chnlset = tv->chnlset;
return (0);
}
#endif /* NRADIO */
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