/*      $NetBSD: if_ral_pci.c,v 1.26 2022/09/25 17:52:25 thorpej Exp $  */
/*      $OpenBSD: if_ral_pci.c,v 1.24 2015/11/24 17:11:39 mpi Exp $  */

/*-
* Copyright (c) 2005-2010 Damien Bergamini <[email protected]>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/

/*
* PCI front-end for the Ralink RT2560/RT2561/RT2860/RT3090 driver.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: if_ral_pci.c,v 1.26 2022/09/25 17:52:25 thorpej Exp $");


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

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

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

#include <netinet/in.h>

#include <net80211/ieee80211_var.h>
#include <net80211/ieee80211_amrr.h>
#include <net80211/ieee80211_rssadapt.h>
#include <net80211/ieee80211_radiotap.h>

#include <dev/ic/rt2560var.h>
#include <dev/ic/rt2661var.h>
#include <dev/ic/rt2860var.h>

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

static struct ral_opns {
       int     (*attach)(void *, int);
       int     (*detach)(void *);
       int     (*intr)(void *);

}  ral_rt2560_opns = {
       rt2560_attach,
       rt2560_detach,
       rt2560_intr

}, ral_rt2661_opns = {
       rt2661_attach,
       rt2661_detach,
       rt2661_intr

}, ral_rt2860_opns = {
       rt2860_attach,
       rt2860_detach,
       rt2860_intr
};

struct ral_pci_softc {
       union {
               struct rt2560_softc     sc_rt2560;
               struct rt2661_softc     sc_rt2661;
               struct rt2860_softc     sc_rt2860;
       } u;
#define sc_sc   u.sc_rt2560

       /* PCI specific goo */
       struct ral_opns         *sc_opns;
       pci_chipset_tag_t       sc_pc;
       void                    *sc_ih;
       bus_size_t              sc_mapsize;
};

/* Base Address Register */
#define RAL_PCI_BAR0 PCI_BAR(0)

int     ral_pci_match(device_t, cfdata_t, void *);
void    ral_pci_attach(device_t, device_t, void *);
int     ral_pci_detach(device_t, int);

CFATTACH_DECL_NEW(ral_pci, sizeof (struct ral_pci_softc),
       ral_pci_match, ral_pci_attach, ral_pci_detach, NULL);

static const struct ral_pci_matchid {
       pci_vendor_id_t         ral_vendor;
       pci_product_id_t        ral_product;
} ral_pci_devices[] = {
       { PCI_VENDOR_AWT,    PCI_PRODUCT_AWT_RT2890 },
       { PCI_VENDOR_EDIMAX, PCI_PRODUCT_EDIMAX_RT2860_1 },
       { PCI_VENDOR_EDIMAX, PCI_PRODUCT_EDIMAX_RT2860_2 },
       { PCI_VENDOR_EDIMAX, PCI_PRODUCT_EDIMAX_RT2860_3 },
       { PCI_VENDOR_EDIMAX, PCI_PRODUCT_EDIMAX_RT2860_4 },
       { PCI_VENDOR_EDIMAX, PCI_PRODUCT_EDIMAX_RT2860_5 },
       { PCI_VENDOR_EDIMAX, PCI_PRODUCT_EDIMAX_RT2860_6 },
       { PCI_VENDOR_EDIMAX, PCI_PRODUCT_EDIMAX_RT2860_7 },
       { PCI_VENDOR_EDIMAX, PCI_PRODUCT_EDIMAX_RT3591_1 },
       { PCI_VENDOR_EDIMAX, PCI_PRODUCT_EDIMAX_RT3591_2 },
       { PCI_VENDOR_MSI,    PCI_PRODUCT_AWT_RT2890 },
       { PCI_VENDOR_RALINK, PCI_PRODUCT_RALINK_RT2560 },
       { PCI_VENDOR_RALINK, PCI_PRODUCT_RALINK_RT2561 },
       { PCI_VENDOR_RALINK, PCI_PRODUCT_RALINK_RT2561S },
       { PCI_VENDOR_RALINK, PCI_PRODUCT_RALINK_RT2661 },
       { PCI_VENDOR_RALINK, PCI_PRODUCT_RALINK_RT2760 },
       { PCI_VENDOR_RALINK, PCI_PRODUCT_RALINK_RT2790 },
       { PCI_VENDOR_RALINK, PCI_PRODUCT_RALINK_RT2860 },
       { PCI_VENDOR_RALINK, PCI_PRODUCT_RALINK_RT2890 },
       { PCI_VENDOR_RALINK, PCI_PRODUCT_RALINK_RT3060 },
       { PCI_VENDOR_RALINK, PCI_PRODUCT_RALINK_RT3062 },
       { PCI_VENDOR_RALINK, PCI_PRODUCT_RALINK_RT3090 },
       { PCI_VENDOR_RALINK, PCI_PRODUCT_RALINK_RT3091 },
       { PCI_VENDOR_RALINK, PCI_PRODUCT_RALINK_RT3092 },
       { PCI_VENDOR_RALINK, PCI_PRODUCT_RALINK_RT3562 },
       { PCI_VENDOR_RALINK, PCI_PRODUCT_RALINK_RT3592 },
       { PCI_VENDOR_RALINK, PCI_PRODUCT_RALINK_RT3593 },
       { PCI_VENDOR_RALINK, PCI_PRODUCT_RALINK_RT5360 },
       { PCI_VENDOR_RALINK, PCI_PRODUCT_RALINK_RT5362 },
       { PCI_VENDOR_RALINK, PCI_PRODUCT_RALINK_RT5390_1 },
       { PCI_VENDOR_RALINK, PCI_PRODUCT_RALINK_RT5390_2 },
       { PCI_VENDOR_RALINK, PCI_PRODUCT_RALINK_RT5390_3 },
       { PCI_VENDOR_RALINK, PCI_PRODUCT_RALINK_RT5390_4 },
       { PCI_VENDOR_RALINK, PCI_PRODUCT_RALINK_RT5390_5 },
};

int
ral_pci_match(device_t parent, cfdata_t cfdata,
   void *aux)
{
       struct pci_attach_args *pa = aux;

       for (size_t i = 0; i < __arraycount(ral_pci_devices); i++) {
               const struct ral_pci_matchid *ral = &ral_pci_devices[i];
               if (PCI_VENDOR(pa->pa_id) == ral->ral_vendor &&
                   PCI_PRODUCT(pa->pa_id) == ral->ral_product)
                       return 1;
       }

       return 0;
}

void
ral_pci_attach(device_t parent, device_t self, void *aux)
{
       struct ral_pci_softc *psc = device_private(self);
       struct rt2560_softc *sc = &psc->sc_sc;
       const struct pci_attach_args *pa = aux;
       const char *intrstr;
       bus_addr_t base;
       pci_intr_handle_t ih;
       pcireg_t memtype, reg;
       int error;
       char intrbuf[PCI_INTRSTR_LEN];

       pci_aprint_devinfo(pa, NULL);

       if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_RALINK) {
               switch (PCI_PRODUCT(pa->pa_id)) {
               case PCI_PRODUCT_RALINK_RT2560:
                       psc->sc_opns = &ral_rt2560_opns;
                       break;
               case PCI_PRODUCT_RALINK_RT2561:
               case PCI_PRODUCT_RALINK_RT2561S:
               case PCI_PRODUCT_RALINK_RT2661:
                       psc->sc_opns = &ral_rt2661_opns;
                       break;
               default:
                       psc->sc_opns = &ral_rt2860_opns;
                       break;
               }
       } else {
               /* all other vendors are RT2860 only */
               psc->sc_opns = &ral_rt2860_opns;
       }

       sc->sc_dev = self;
       sc->sc_dmat = pa->pa_dmat;
       psc->sc_pc = pa->pa_pc;

       /* enable the appropriate bits in the PCI CSR */
       reg = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG);
       reg |= PCI_COMMAND_MASTER_ENABLE | PCI_COMMAND_MEM_ENABLE;
       pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, reg);

       /* map control/status registers */
       memtype = pci_mapreg_type(pa->pa_pc, pa->pa_tag, RAL_PCI_BAR0);
       error = pci_mapreg_map(pa, RAL_PCI_BAR0, memtype, 0, &sc->sc_st,
           &sc->sc_sh, &base, &psc->sc_mapsize);

       if (error != 0) {
               aprint_error(": could not map memory space\n");
               return;
       }

       if (pci_intr_map(pa, &ih) != 0) {
               aprint_error(": could not map interrupt\n");
               return;
       }

       intrstr = pci_intr_string(psc->sc_pc, ih, intrbuf, sizeof(intrbuf));
       psc->sc_ih = pci_intr_establish_xname(psc->sc_pc, ih, IPL_NET,
           psc->sc_opns->intr, sc, device_xname(self));

       if (psc->sc_ih == NULL) {
               aprint_error(": could not establish interrupt");
               if (intrstr != NULL)
                       aprint_error(" at %s", intrstr);
               aprint_error("\n");
               return;
       }
       aprint_normal_dev(sc->sc_dev, "interrupting at %s\n", intrstr);

       (*psc->sc_opns->attach)(sc, PCI_PRODUCT(pa->pa_id));
}

int
ral_pci_detach(device_t self, int flags)
{
       struct ral_pci_softc *psc = device_private(self);
       struct rt2560_softc *sc = &psc->sc_sc;
       int error;

       if (psc->sc_ih != NULL) {
               pci_intr_disestablish(psc->sc_pc, psc->sc_ih);

               error = (*psc->sc_opns->detach)(sc);
               if (error != 0)
                       return error;
       }

       if (psc->sc_mapsize > 0)
               bus_space_unmap(sc->sc_st, sc->sc_sh, psc->sc_mapsize);

       return 0;
}

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