/*      $NetBSD: if_sf_pci.c,v 1.23 2022/09/24 18:12:42 thorpej Exp $   */

/*-
* Copyright (c) 2001 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jason R. Thorpe.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``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 FOUNDATION OR CONTRIBUTORS
* 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.
*/

/*
* PCI bus front-end for the Adaptec AIC-6915 (``Starfire'')
* 10/100 Ethernet controller.
*/

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: if_sf_pci.c,v 1.23 2022/09/24 18:12:42 thorpej Exp $");

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/mbuf.h>
#include <sys/kernel.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <sys/errno.h>
#include <sys/device.h>

#include <net/if.h>
#include <net/if_dl.h>
#include <net/if_media.h>
#include <net/if_ether.h>

#include <sys/bus.h>
#include <sys/intr.h>

#include <dev/mii/miivar.h>

#include <dev/ic/aic6915reg.h>
#include <dev/ic/aic6915var.h>

#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcidevs.h>

struct sf_pci_softc {
       struct sf_softc sc_starfire;    /* read Starfire softc */

       /* PCI-specific goo. */
       void    *sc_ih;                 /* interrupt handle */
};

static int      sf_pci_match(device_t, cfdata_t, void *);
static void     sf_pci_attach(device_t, device_t, void *);

CFATTACH_DECL_NEW(sf_pci, sizeof(struct sf_pci_softc),
   sf_pci_match, sf_pci_attach, NULL, NULL);

struct sf_pci_product {
       uint32_t        spp_vendor;     /* PCI vendor ID */
       uint32_t        spp_product;    /* PCI product ID */
       const char      *spp_name;      /* product name */
       const struct sf_pci_product *spp_subsys; /* subsystm IDs */
};

static const struct sf_pci_product sf_subsys_adaptec[] = {
       /* ANA-62011 (rev 0) Single port 10/100 64-bit */
       { PCI_VENDOR_ADP,                       0x0008,
         "ANA-62011 (rev 0) 10/100 Ethernet",  NULL },

       /* ANA-62011 (rev 1) Single port 10/100 64-bit */
       { PCI_VENDOR_ADP,                       0x0009,
         "ANA-62011 (rev 1) 10/100 Ethernet",  NULL },

       /* ANA-62022 Dual port 10/100 64-bit */
       { PCI_VENDOR_ADP,                       0x0010,
         "ANA-62022 10/100 Ethernet",          NULL },

       /* ANA-62044 (rev 0) Quad port 10/100 64-bit */
       { PCI_VENDOR_ADP,                       0x0018,
         "ANA-62044 (rev 0) 10/100 Ethernet",  NULL },

       /* ANA-62044 (rev 1) Quad port 10/100 64-bit */
       { PCI_VENDOR_ADP,                       0x0019,
         "ANA-62044 (rev 1) 10/100 Ethernet",  NULL },

       /* ANA-62020 Single port 100baseFX 64-bit */
       { PCI_VENDOR_ADP,                       0x0020,
         "ANA-62020 100baseFX Ethernet",       NULL },

       /* ANA-69011 Single port 10/100 32-bit */
       { PCI_VENDOR_ADP,                       0x0028,
         "ANA-69011 10/100 Ethernet",          NULL },

       { 0,                                    0,
         NULL,                                 NULL },
};

static const struct sf_pci_product sf_pci_products[] = {
       { PCI_VENDOR_ADP,                       PCI_PRODUCT_ADP_AIC6915,
         "AIC-6915 10/100 Ethernet",           sf_subsys_adaptec },

       { 0,                                    0,
         NULL,                                 NULL },
};

static const struct sf_pci_product *
sf_pci_lookup(const struct pci_attach_args *pa)
{
       const struct sf_pci_product *spp, *subspp;
       pcireg_t subsysid;

       for (spp = sf_pci_products; spp->spp_name != NULL; spp++) {
               if (PCI_VENDOR(pa->pa_id) == spp->spp_vendor &&
                   PCI_PRODUCT(pa->pa_id) == spp->spp_product) {
                       subsysid = pci_conf_read(pa->pa_pc, pa->pa_tag,
                           PCI_SUBSYS_ID_REG);
                       for (subspp = spp->spp_subsys;
                            subspp->spp_name != NULL; subspp++) {
                               if (PCI_VENDOR(subsysid) ==
                                       subspp->spp_vendor ||
                                   PCI_PRODUCT(subsysid) ==
                                       subspp->spp_product) {
                                       return (subspp);
                               }
                       }
                       return (spp);
               }
       }

       return (NULL);
}

static int
sf_pci_match(device_t parent, cfdata_t match, void *aux)
{
       struct pci_attach_args *pa = aux;

       if (sf_pci_lookup(pa) != NULL)
               return (1);

       return (0);
}

static void
sf_pci_attach(device_t parent, device_t self, void *aux)
{
       struct sf_pci_softc *psc = device_private(self);
       struct sf_softc *sc = &psc->sc_starfire;
       struct pci_attach_args *pa = aux;
       pci_intr_handle_t ih;
       const char *intrstr = NULL;
       const struct sf_pci_product *spp;
       bus_space_tag_t iot, memt;
       bus_space_handle_t ioh, memh;
       pcireg_t reg;
       int error, ioh_valid, memh_valid;
       char intrbuf[PCI_INTRSTR_LEN];

       sc->sc_dev = self;
       spp = sf_pci_lookup(pa);
       if (spp == NULL) {
               printf("\n");
               panic("sf_pci_attach: impossible");
       }

       printf(": %s, rev. %d\n", spp->spp_name, PCI_REVISION(pa->pa_class));

       /* power up chip */
       if ((error = pci_activate(pa->pa_pc, pa->pa_tag, self, NULL)) &&
           error != EOPNOTSUPP) {
               aprint_error_dev(self, "cannot activate %d\n", error);
               return;
       }

       /*
        * Map the device.
        */
       reg = pci_mapreg_type(pa->pa_pc, pa->pa_tag, SF_PCI_MEMBA);
       switch (reg) {
       case PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_32BIT:
       case PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_64BIT:
               memh_valid = (pci_mapreg_map(pa, SF_PCI_MEMBA,
                   reg, 0, &memt, &memh, NULL, NULL) == 0);
               break;
       default:
               memh_valid = 0;
       }

       ioh_valid = (pci_mapreg_map(pa,
           (reg == (PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_64BIT)) ?
               SF_PCI_IOBA : SF_PCI_IOBA - 0x04,
           PCI_MAPREG_TYPE_IO, 0, &iot, &ioh, NULL, NULL) == 0);

       if (memh_valid) {
               sc->sc_st = memt;
               sc->sc_sh = memh;
               sc->sc_iomapped = 0;
       } else if (ioh_valid) {
               sc->sc_st = iot;
               sc->sc_sh = ioh;
               sc->sc_iomapped = 1;
       } else {
               aprint_error_dev(self, "unable to map device registers\n");
               return;
       }

       sc->sc_dmat = pa->pa_dmat;

       /* Make sure bus mastering is enabled. */
       pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG,
           pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG) |
           PCI_COMMAND_MASTER_ENABLE);

       /*
        * Map and establish our interrupt.
        */
       if (pci_intr_map(pa, &ih)) {
               aprint_error_dev(self, "unable to map interrupt\n");
               return;
       }
       intrstr = pci_intr_string(pa->pa_pc, ih, intrbuf, sizeof(intrbuf));
       psc->sc_ih = pci_intr_establish_xname(pa->pa_pc, ih, IPL_NET, sf_intr,
           sc, device_xname(self));
       if (psc->sc_ih == NULL) {
               aprint_error_dev(self, "unable to establish interrupt");
               if (intrstr != NULL)
                       aprint_error(" at %s", intrstr);
               aprint_error("\n");
               return;
       }
       aprint_normal_dev(self, "interrupting at %s\n", intrstr);

       /*
        * Finish off the attach.
        */
       sf_attach(sc);
}

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