root/dev/pci/bktr/bktr_os.c

DEFINITIONS

1. bktr_intr
2. bktr_probe
3. bktr_attach
4. get_bktr_mem
5. free_bktr_mem
6. bktr_open
7. bktr_close
8. bktr_read
9. bktr_write
10. bktr_ioctl
11. bktr_mmap
12. bktr_set_info
13. bktr_get_info

    1 /*      $OpenBSD: bktr_os.c,v 1.27 2007/06/18 07:31:14 jakemsr Exp $    */
    2 /* $FreeBSD: src/sys/dev/bktr/bktr_os.c,v 1.20 2000/10/20 08:16:53 roger Exp $ */
    4 /*
    5  * This is part of the Driver for Video Capture Cards (Frame grabbers)
    6  * and TV Tuner cards using the Brooktree Bt848, Bt848A, Bt849A, Bt878, Bt879
    7  * chipset.
    8  * Copyright Roger Hardiman and Amancio Hasty.
    9  *
   10  * bktr_os : This has all the Operating System dependant code,
   11  *             probe/attach and open/close/ioctl/read/mmap
   12  *             memory allocation
   13  *             PCI bus interfacing
   14  *             
   15  *
   16  */
   18 /*
   19  * 1. Redistributions of source code must retain the 
   20  * Copyright (c) 1997 Amancio Hasty, 1999 Roger Hardiman
   21  * All rights reserved.
   22  *
   23  * Redistribution and use in source and binary forms, with or without
   24  * modification, are permitted provided that the following conditions
   25  * are met:
   26  * 1. Redistributions of source code must retain the above copyright
   27  *    notice, this list of conditions and the following disclaimer.
   28  * 2. Redistributions in binary form must reproduce the above copyright
   29  *    notice, this list of conditions and the following disclaimer in the
   30  *    documentation and/or other materials provided with the distribution.
   31  * 3. All advertising materials mentioning features or use of this software
   32  *    must display the following acknowledgement:
   33  *      This product includes software developed by Amancio Hasty and
   34  *      Roger Hardiman
   35  * 4. The name of the author may not be used to endorse or promote products 
   36  *    derived from this software without specific prior written permission.
   37  *
   38  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   39  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
   40  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   41  * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
   42  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
   43  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
   44  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   45  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
   46  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
   47  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   48  * POSSIBILITY OF SUCH DAMAGE.
   49  */
   51 #define FIFO_RISC_DISABLED      0
   52 #define ALL_INTS_DISABLED       0
   54 #include "radio.h"
   56 #include <sys/param.h>
   57 #include <sys/systm.h>
   58 #include <sys/conf.h>
   59 #include <sys/uio.h>
   60 #include <sys/kernel.h>
   61 #include <sys/signalvar.h>
   62 #include <sys/mman.h>
   63 #include <sys/poll.h>
   64 #include <sys/selinfo.h>
   65 #include <sys/vnode.h>
   66 #if NRADIO > 0
   67 #include <sys/radioio.h>
   68 #include <dev/radio_if.h>
   69 #endif
   71 #include <uvm/uvm_extern.h>
   73 #include <sys/device.h>
   74 #include <dev/pci/pcivar.h>
   75 #include <dev/pci/pcireg.h>
   76 #include <dev/pci/pcidevs.h>
   78 #ifdef BKTR_DEBUG
   79 int bktr_debug = 1;
   80 #define DPR(x)  (bktr_debug ? printf x : 0)
   81 #else
   82 #define DPR(x)
   83 #endif
   85 #include <dev/ic/bt8xx.h>       /* OpenBSD location for .h files */
   86 #include <dev/pci/bktr/bktr_reg.h>
   87 #include <dev/pci/bktr/bktr_tuner.h>
   88 #include <dev/pci/bktr/bktr_card.h>
   89 #include <dev/pci/bktr/bktr_audio.h>
   90 #include <dev/pci/bktr/bktr_core.h>
   91 #include <dev/pci/bktr/bktr_os.h>
   93 #define IPL_VIDEO       IPL_BIO         /* XXX */
   95 static  int             bktr_intr(void *arg) { return common_bktr_intr(arg); }
   97 #define bktr_open       bktropen
   98 #define bktr_close      bktrclose
   99 #define bktr_read       bktrread
  100 #define bktr_write      bktrwrite
  101 #define bktr_ioctl      bktrioctl
  102 #define bktr_mmap       bktrmmap
  104 int     bktr_open(dev_t, int, int, struct proc *);
  105 int     bktr_close(dev_t, int, int, struct proc *);
  106 int     bktr_read(dev_t, struct uio *, int);
  107 int     bktr_write(dev_t, struct uio *, int);
  108 int     bktr_ioctl(dev_t, ioctl_cmd_t, caddr_t, int, struct proc *);
paddr_t bktr_mmap(dev_t, off_t, int);
  111 static int      bktr_probe(struct device *, void *, void *);
  112 static void     bktr_attach(struct device *, struct device *, void *);
  114 struct cfattach bktr_ca = {
  115         sizeof(struct bktr_softc), bktr_probe, bktr_attach
  116 };
  118 struct cfdriver bktr_cd = {
NULL, "bktr", DV_DULL
  120 };
  122 #if NRADIO > 0
  123 /* for radio(4) */
  124 int     bktr_get_info(void *, struct radio_info *);
  125 int     bktr_set_info(void *, struct radio_info *);
  127 struct radio_hw_if bktr_hw_if = {
NULL,   /* open */
NULL,   /* close */
bktr_get_info,
bktr_set_info,
NULL    /* search */
  133 };
  134 #endif
  136 int
bktr_probe(parent, match, aux)
  138         struct device *parent;
  139         void *match;
  140         void *aux;
  141 {
  142         struct pci_attach_args *pa = aux;
  144         if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_BROOKTREE &&
  145             (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))
  149                 return 1;
  151         return 0;
  152 }
  155 /*
  156  * the attach routine.
  157  */
  158 static void
bktr_attach(struct device *parent, struct device *self, void *aux)
  160 {
bktr_ptr_t      bktr;
u_int           latency;
u_int           fun;
  164         unsigned int    rev;
  165         struct pci_attach_args *pa = aux;
pci_intr_handle_t ih;
  167         const char *intrstr;
  168         int retval;
  169         int unit;
bktr = (bktr_ptr_t)self;
unit = bktr->bktr_dev.dv_unit;
bktr->dmat = pa->pa_dmat;
  175         /* Enabled Bus Master
  176            XXX: check if all old DMA is stopped first (e.g. after warm
  177            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);
  184         /*
  185          * map memory
  186          */
retval = pci_mapreg_map(pa, PCI_MAPREG_START, PCI_MAPREG_TYPE_MEM |
PCI_MAPREG_MEM_TYPE_32BIT, 0, &bktr->memt, &bktr->memh, NULL,
  189             &bktr->obmemsz, 0);
DPR(("pci_mapreg_map: memt %lx, memh %lx, size %x\n",
bktr->memt, bktr->memh, bktr->obmemsz));
  192         if (retval) {
printf("%s: couldn't map memory\n", bktr_name(bktr));
  194                 return;
  195         }
  197         /*
  198          * Disable the brooktree device
  199          */
OUTL(bktr, BKTR_INT_MASK, ALL_INTS_DISABLED);
OUTW(bktr, BKTR_GPIO_DMA_CTL, FIFO_RISC_DISABLED);
  203         /*
  204          * map interrupt
  205          */
  206         if (pci_intr_map(pa, &ih)) {
printf("%s: couldn't map interrupt\n",
bktr_name(bktr));
  209                 return;
  210         }
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);
  214         if (bktr->ih == NULL) {
printf("%s: couldn't establish interrupt",
bktr_name(bktr));
  217                 if (intrstr != NULL)
printf(" at %s", intrstr);
printf("\n");
  220                 return;
  221         }
  222         if (intrstr != NULL)
printf(": %s\n", intrstr);
  225 /*
  226  * PCI latency timer.  32 is a good value for 4 bus mastering slots, if
  227  * you have more than four, then 16 would probably be a better value.
  228  */
  229 #ifndef BROOKTREE_DEF_LATENCY_VALUE
  230 #define BROOKTREE_DEF_LATENCY_VALUE     0x10
  231 #endif
latency = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_LATENCY_TIMER);
latency = (latency >> 8) & 0xff;
  235         if (!latency) {
  236                 if (bootverbose) {
printf("%s: PCI bus latency was 0 changing to %d",
bktr_name(bktr), BROOKTREE_DEF_LATENCY_VALUE);
  239                 }
latency = BROOKTREE_DEF_LATENCY_VALUE;
pci_conf_write(pa->pa_pc, pa->pa_tag, 
PCI_LATENCY_TIMER, latency<<8);
  243         }
  246         /* 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);
  252 #if NRADIO > 0
  253         if (bktr->card.tuner->pllControl[3] != 0x00)
radio_attach_mi(&bktr_hw_if, bktr, &bktr->bktr_dev);
  255 #endif
  256 }
  259 /*
  260  * Special Memory Allocation
  261  */
vaddr_t
get_bktr_mem(bktr, dmapp, size)
bktr_ptr_t bktr;
bus_dmamap_t *dmapp;
  266         unsigned int size;
  267 {
bus_dma_tag_t dmat = bktr->dmat;
bus_dma_segment_t seg;
bus_size_t align;
  271         int rseg;
caddr_t kva;
  274         /*
  275          * Allocate a DMA area
  276          */
align = 1 << 24;
  278         if (bus_dmamem_alloc(dmat, size, align, 0, &seg, 1,
  279                              &rseg, BUS_DMA_NOWAIT)) {
align = PAGE_SIZE;
  281                 if (bus_dmamem_alloc(dmat, size, align, 0, &seg, 1,
  282                                      &rseg, BUS_DMA_NOWAIT)) {
printf("%s: Unable to dmamem_alloc of %d bytes\n",
bktr_name(bktr), size);
  285                         return 0;
  286                 }
  287         }
  288         if (bus_dmamem_map(dmat, &seg, rseg, size,
  289                            &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);
  293                 return 0;
  294         }
  295         /*
  296          * Create and locd the DMA map for the DMA area
  297          */
  298         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);
  303                 return 0;
  304         }
  305         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);
  311                 return 0;
  312         }
  313         return (vaddr_t)kva;
  314 }
  316 void
free_bktr_mem(bktr, dmap, kva)
bktr_ptr_t bktr;
bus_dmamap_t dmap;
vaddr_t kva;
  321 {
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);
  327 }
  330 /*---------------------------------------------------------
  331 **
  332 **      BrookTree 848 character device driver routines
  333 **
  334 **---------------------------------------------------------
  335 */
  338 #define VIDEO_DEV       0x00
  339 #define TUNER_DEV       0x01
  340 #define VBI_DEV         0x02
  342 #define UNIT(x)         (minor((x) & 0x0f))
  343 #define FUNCTION(x)     (minor((x >> 4) & 0x0f))
  345 /*
  346  * 
  347  */
  348 int
bktr_open(dev_t dev, int flags, int fmt, struct proc *p)
  350 {
bktr_ptr_t      bktr;
  352         int             unit;
unit = UNIT(dev);
  356         /* unit out of range */
  357         if ((unit >= bktr_cd.cd_ndevs) || (bktr_cd.cd_devs[unit] == NULL))
  358                 return(ENXIO);
bktr = bktr_cd.cd_devs[unit];
  362         if (!(bktr->flags & METEOR_INITALIZED)) /* device not found */
  363                 return(ENXIO);  
  365         switch (FUNCTION(dev)) {
  366         case VIDEO_DEV:
  367                 return(video_open(bktr));
  368         case TUNER_DEV:
  369                 return(tuner_open(bktr));
  370         case VBI_DEV:
  371                 return(vbi_open(bktr));
  372         }
  374         return(ENXIO);
  375 }
  378 /*
  379  * 
  380  */
  381 int
bktr_close(dev_t dev, int flags, int fmt, struct proc *p)
  383 {
bktr_ptr_t      bktr;
  385         int             unit;
unit = UNIT(dev);
bktr = bktr_cd.cd_devs[unit];
  391         switch (FUNCTION(dev)) {
  392         case VIDEO_DEV:
  393                 return(video_close(bktr));
  394         case TUNER_DEV:
  395                 return(tuner_close(bktr));
  396         case VBI_DEV:
  397                 return(vbi_close(bktr));
  398         }
  400         return(ENXIO);
  401 }
  403 /*
  404  * 
  405  */
  406 int
bktr_read(dev_t dev, struct uio *uio, int ioflag)
  408 {
bktr_ptr_t      bktr;
  410         int             unit;
unit = UNIT(dev);
bktr = bktr_cd.cd_devs[unit];
  416         switch (FUNCTION(dev)) {
  417         case VIDEO_DEV:
  418                 return(video_read(bktr, unit, dev, uio));
  419         case VBI_DEV:
  420                 return(vbi_read(bktr, uio, ioflag));
  421         }
  423         return(ENXIO);
  424 }
  427 /*
  428  * 
  429  */
  430 int
bktr_write(dev_t dev, struct uio *uio, int ioflag)
  432 {
  433         /* operation not supported */
  434         return(EOPNOTSUPP);
  435 }
  437 /*
  438  * 
  439  */
  440 int
bktr_ioctl(dev_t dev, ioctl_cmd_t cmd, caddr_t arg, int flag, struct proc* pr)
  442 {
bktr_ptr_t      bktr;
  444         int             unit;
unit = UNIT(dev);
bktr = bktr_cd.cd_devs[unit];
  450         if (bktr->bigbuf == 0)  /* no frame buffer allocated (ioctl failed) */
  451                 return(ENOMEM);
  453         switch (FUNCTION(dev)) {
  454         case VIDEO_DEV:
  455                 return(video_ioctl(bktr, unit, cmd, arg, pr));
  456         case TUNER_DEV:
  457                 return(tuner_ioctl(bktr, unit, cmd, arg, pr));
  458         }
  460         return(ENXIO);
  461 }
  463 /*
  464  * 
  465  */
paddr_t
bktr_mmap(dev_t dev, off_t offset, int nprot)
  468 {
  469         int             unit;
bktr_ptr_t      bktr;
unit = UNIT(dev);
  474         if (FUNCTION(dev) > 0)  /* only allow mmap on /dev/bktr[n] */
  475                 return(-1);
bktr = bktr_cd.cd_devs[unit];
  479         if ((vaddr_t)offset < 0)
  480                 return(-1);
  482         if ((vaddr_t)offset >= bktr->alloc_pages * PAGE_SIZE)
  483                 return(-1);
  485         return (bus_dmamem_mmap(bktr->dmat, bktr->dm_mem->dm_segs, 1,
  486                                 (vaddr_t)offset, nprot, BUS_DMA_WAITOK));
  487 }
  489 #if NRADIO > 0
  490 int
bktr_set_info(void *v, struct radio_info *ri)
  492 {
  493         struct bktr_softc *sc = v;
  494         struct TVTUNER *tv = &sc->tuner;
u_int32_t freq;
u_int32_t chan;
  498         if (ri->mute) {
  499                 /* mute the audio stream by switching the mux */
set_audio(sc, AUDIO_MUTE);
  501         } else {
  502                 /* unmute the audio stream */
set_audio(sc, AUDIO_UNMUTE);
init_audio_devices(sc);
  505         }
set_audio(sc, AUDIO_INTERN);    /* use internal audio */
temp_mute(sc, TRUE);
  510         if (ri->tuner_mode == RADIO_TUNER_MODE_TV) {
  511                 if (ri->chan) {
  512                         if (ri->chan < MIN_TV_CHAN)
ri->chan = MIN_TV_CHAN;
  514                         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;
  520                 } else {
ri->chan = tv->channel;
  522                 }
  523         } else {
  524                 if (ri->freq) {
  525                         if (ri->freq < MIN_FM_FREQ)
ri->freq = MIN_FM_FREQ;
  527                         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;
  533                 } else {
ri->freq = tv->frequency;
  535                 }
  536         }
  538         if (ri->chnlset >= CHNLSET_MIN && ri->chnlset <= CHNLSET_MAX)
tv->chnlset = ri->chnlset;
  540         else
tv->chnlset = DEFAULT_CHNLSET;
temp_mute(sc, FALSE);
  545         return (0);
  546 }
  548 int
bktr_get_info(void *v, struct radio_info *ri)
  550 {
  551         struct bktr_softc *sc = v;
  552         struct TVTUNER *tv = &sc->tuner;
  553         int status;
status = get_tuner_status(sc);
  557 #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;
  562         /* not yet supported */
ri->volume = ri->rfreq = ri->lock = 0;
  565         switch (tv->tuner_mode) {
  566         case BT848_TUNER_MODE_TV:
ri->tuner_mode = RADIO_TUNER_MODE_TV;
ri->freq = tv->frequency * 1000 / 16;
  569                 break;
  570         case BT848_TUNER_MODE_RADIO:
ri->tuner_mode = RADIO_TUNER_MODE_RADIO;
ri->freq = tv->frequency * 10;
  573                 break;
  574         }
  576         /*
  577          * The field ri->stereo is used to forcible switch to
  578          * mono/stereo, not as an indicator of received signal quality.
  579          * The ri->info is for that purpose.
  580          */
ri->stereo = 1; /* Can't switch to mono, always stereo */
ri->chan = tv->channel;
ri->chnlset = tv->chnlset;
  586         return (0);
  587 }
  588 #endif /* NRADIO */