sys/arch/hpcmips/dev/mq200_pci.c

   1 /*      $NetBSD: mq200_pci.c,v 1.3 2002/09/27 20:32:12 thorpej Exp $    */
   2
   3 /*-
   4  * Copyright (c) 2002 TAKEMURA Shin
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. The name of the author may not be used to endorse or promote products
  16  *    derived from this software without specific prior written permission.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  19  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  21  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  22  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  23  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  24  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  27  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  28  * SUCH DAMAGE.
  29  *
  30  */
  31
  32 #include <sys/cdefs.h>
  33 __KERNEL_RCSID(0, "$NetBSD: mq200_pci.c,v 1.3 2002/09/27 20:32:12 thorpej Exp $");
  34
  35 #include <sys/param.h>
  36 #include <sys/systm.h>
  37 #include <sys/kernel.h>
  38 #include <sys/device.h>
  39 #include <sys/malloc.h>
  40
  41 #include <dev/pci/pcireg.h>
  42 #include <dev/pci/pcivar.h>
  43 #include <dev/pci/pcidevs.h>
  44 #include <dev/pci/pciio.h>
  45
  46 #include <hpcmips/dev/mq200var.h>
  47
  48 struct mq200_pci_softc {
  49         struct mq200_softc      sc_mq200;
  50         pci_chipset_tag_t sc_pc;
  51         pcitag_t sc_pcitag;
  52 };
  53
  54 int     mq200_pci_match(struct device *, struct cfdata *, void *);
  55 void    mq200_pci_attach(struct device *, struct device *, void *);
  56
  57 CFATTACH_DECL(mqvideo_pci, sizeof(struct mq200_pci_softc),
  58     mq200_pci_match, mq200_pci_attach, NULL, NULL);
  59
  60 int
  61 mq200_pci_match(struct device *parent, struct cfdata *match, void *aux)
  62 {
  63         struct pci_attach_args *pa = aux;
  64
  65         /* check vendor id and product id */
  66         if (pa->pa_id !=
  67             PCI_ID_CODE(PCI_VENDOR_MEDIAQ, PCI_PRODUCT_MEDIAQ_MQ200))
  68                 return (0);
  69
  70         return (1);
  71 }
  72
  73 void
  74 mq200_pci_attach(struct device *parent, struct device *self, void *aux)
  75 {
  76         struct mq200_pci_softc *psc = (void *) self;
  77         struct mq200_softc *sc = &psc->sc_mq200;
  78         struct pci_attach_args *pa = aux;
  79         int res;
  80
  81         psc->sc_pc = pa->pa_pc;
  82         psc->sc_pcitag = pa->pa_tag;
  83
  84         /* check whether it is disabled by firmware */
  85         if (!(pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG) &
  86             PCI_COMMAND_MEM_ENABLE)) {
  87                 printf("%s: disabled\n", sc->sc_dev.dv_xname);
  88                 return;
  89         }
  90
  91         /* Base Address Register 0: base address of control registers */
  92         res = pci_mapreg_map(pa, PCI_MAPREG_START, PCI_MAPREG_TYPE_MEM,
  93             0, &sc->sc_iot, &sc->sc_ioh, NULL, NULL);
  94         if (res != 0) {
  95                 printf("%s: can't map registers\n", sc->sc_dev.dv_xname);
  96                 return;
  97         }
  98
  99         /* Base Address Register 1: base address of frame buffer */
 100         res = pci_mapreg_info(psc->sc_pc, psc->sc_pcitag, PCI_MAPREG_START+4,
 101             PCI_MAPREG_TYPE_MEM, &sc->sc_baseaddr, NULL, NULL);
 102         if (res != 0) {
 103                 printf("%s: can't map frame buffer\n", sc->sc_dev.dv_xname);
 104                 return;
 105         }
 106
 107         mq200_attach(sc);
 108 }