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      1 /*	$NetBSD: mq200_pci.c,v 1.6 2023/12/20 14:50:02 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 1.6 2023/12/20 14:50:02 thorpej Exp $");
     34 
     35 #include <sys/param.h>
     36 #include <sys/systm.h>
     37 #include <sys/kernel.h>
     38 #include <sys/device.h>
     39 
     40 #include <dev/pci/pcireg.h>
     41 #include <dev/pci/pcivar.h>
     42 #include <dev/pci/pcidevs.h>
     43 #include <dev/pci/pciio.h>
     44 
     45 #include <hpcmips/dev/mq200var.h>
     46 
     47 struct mq200_pci_softc {
     48 	struct mq200_softc	sc_mq200;
     49 	pci_chipset_tag_t sc_pc;
     50 	pcitag_t sc_pcitag;
     51 };
     52 
     53 int	mq200_pci_match(device_t, cfdata_t, void *);
     54 void	mq200_pci_attach(device_t, device_t, void *);
     55 
     56 CFATTACH_DECL_NEW(mqvideo_pci, sizeof(struct mq200_pci_softc),
     57     mq200_pci_match, mq200_pci_attach, NULL, NULL);
     58 
     59 int
     60 mq200_pci_match(device_t parent, cfdata_t match, void *aux)
     61 {
     62 	struct pci_attach_args *pa = aux;
     63 
     64 	/* check vendor id and product id */
     65 	if (pa->pa_id !=
     66 	    PCI_ID_CODE(PCI_VENDOR_MEDIAQ, PCI_PRODUCT_MEDIAQ_MQ200))
     67 		return (0);
     68 
     69 	return (1);
     70 }
     71 
     72 void
     73 mq200_pci_attach(device_t parent, device_t self, void *aux)
     74 {
     75 	struct mq200_pci_softc *psc = device_private(self);
     76 	struct mq200_softc *sc = &psc->sc_mq200;
     77 	struct pci_attach_args *pa = aux;
     78 	int res;
     79 
     80 	sc->sc_dev = self;
     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", device_xname(sc->sc_dev));
     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", device_xname(sc->sc_dev));
     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", device_xname(sc->sc_dev));
    104 		return;
    105 	}
    106 
    107 	mq200_attach(sc);
    108 }
    109