/* $NetBSD: mfi_pci.c,v 1.22 2022/09/25 17:52:25 thorpej Exp $ */
/* $OpenBSD: mfi_pci.c,v 1.11 2006/08/06 04:40:08 brad Exp $ */
/*
* Copyright (c) 2006 Marco Peereboom <[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.
*/

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: mfi_pci.c,v 1.22 2022/09/25 17:52:25 thorpej Exp $");

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

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

#include <sys/bus.h>

#include <dev/scsipi/scsipi_all.h>
#include <dev/scsipi/scsipi_disk.h>
#include <dev/scsipi/scsiconf.h>

#include <dev/ic/mfireg.h>
#include <dev/ic/mfivar.h>

#define MFI_BAR         0x10
#define MFI_BAR_GEN2    0x14
#define MFI_PCI_MEMSIZE 0x2000 /* 8k */

struct mfi_pci_softc {
       struct mfi_softc        psc_sc;
       pci_chipset_tag_t       psc_pc;
};

const struct mfi_pci_device *mfi_pci_find_device(struct pci_attach_args *);
int     mfi_pci_match(device_t, cfdata_t, void *);
void    mfi_pci_attach(device_t, device_t, void *);
int     mfi_pci_detach(device_t, int);

CFATTACH_DECL3_NEW(mfi_pci, sizeof(struct mfi_pci_softc),
   mfi_pci_match, mfi_pci_attach, mfi_pci_detach, NULL, mfi_rescan,
   mfi_childdetached, DVF_DETACH_SHUTDOWN);

struct mfi_pci_subtype {
       pcireg_t        st_vendor;
       pcireg_t        st_product;
       const char      *st_string;
};

static const struct mfi_pci_subtype mfi_1078_subtypes[] = {
       { PCI_VENDOR_SYMBIOS,   0x1006,         "SAS 8888ELP" },
       { PCI_VENDOR_SYMBIOS,   0x100a,         "SAS 8708ELP" },
       { PCI_VENDOR_SYMBIOS,   0x100f,         "SAS 8708E" },
       { PCI_VENDOR_SYMBIOS,   0x1012,         "SAS 8704ELP" },
       { PCI_VENDOR_SYMBIOS,   0x1013,         "SAS 8708EM2" },
       { PCI_VENDOR_SYMBIOS,   0x1016,         "SAS 8880EM2" },
       { PCI_VENDOR_DELL,      0x1f0a,         "Dell PERC 6/e" },
       { PCI_VENDOR_DELL,      0x1f0b,         "Dell PERC 6/i" },
       { PCI_VENDOR_DELL,      0x1f0c,         "Dell PERC 6/i integrated" },
       { PCI_VENDOR_DELL,      0x1f0d,         "Dell CERC 6/i" },
       { PCI_VENDOR_DELL,      0x1f11,         "Dell CERC 6/i integrated" },
       { 0,                    0,              NULL }
};

static const struct mfi_pci_subtype mfi_perc5_subtypes[] = {
       { PCI_VENDOR_DELL,      0x1f01,         "Dell PERC 5/e" },
       { PCI_VENDOR_DELL,      0x1f02,         "Dell PERC 5/i" },
       { PCI_VENDOR_DELL,      0x1f03,         "Dell PERC 5/i integrated" },
       { 0,                    0,              NULL }
};

static const struct mfi_pci_subtype mfi_gen2_subtypes[] = {
       { PCI_VENDOR_SYMBIOS,   0x9261,         "SAS 9260-8i" },
       { PCI_VENDOR_SYMBIOS,   0x9263,         "SAS 9261-8i" },
       { PCI_VENDOR_IBM,       0x03c7,         "IBM ServeRAID M5014 SAS/SATA" },
       { PCI_VENDOR_DELL,      0x1f15,         "Dell PERC H800 Adapter" },
       { PCI_VENDOR_DELL,      0x1f16,         "Dell PERC H700 Adapter" },
       { PCI_VENDOR_DELL,      0x1f17,         "Dell PERC H700 Integrated" },
       { PCI_VENDOR_DELL,      0x1f18,         "Dell PERC H700 Modular" },
       { PCI_VENDOR_DELL,      0x1f19,         "Dell PERC H700" },
       { PCI_VENDOR_DELL,      0x1f1a,         "Dell PERC H800 Proto Adapter" },
       { PCI_VENDOR_DELL,      0x1f1b,         "Dell PERC H800" },
       { 0x0,                  0,              "" }
};

static const struct mfi_pci_subtype mfi_skinny_subtypes[] = {
       { PCI_VENDOR_IBM,       0x03b1,         "IBM ServeRAID M1015 SAS/SATA" },
       { PCI_VENDOR_DELL,      0x1f78,         "Dell PERC H310" },
       { 0x0,                  0,              "" }
};

static const struct mfi_pci_subtype mfi_tbolt_subtypes[] = {
       { PCI_VENDOR_SYMBIOS,   0x9265,         "SAS 9265-8i" },
       { PCI_VENDOR_DELL,      0x1f2d,         "Dell PERC H810 Adapter" },
       { PCI_VENDOR_DELL,      0x1f30,         "Dell PERC H710 Embedded" },
       { PCI_VENDOR_DELL,      0x1f31,         "Dell PERC H710P Adapter" },
       { PCI_VENDOR_DELL,      0x1f33,         "Dell PERC H710P Mini (blades)" },
       { PCI_VENDOR_DELL,      0x1f34,         "Dell PERC H710P Mini (blades)" },
       { PCI_VENDOR_DELL,      0x1f35,         "Dell PERC H710 Adapter" },
       { PCI_VENDOR_DELL,      0x1f37,         "Dell PERC H710 Mini (blades)" },
       { PCI_VENDOR_DELL,      0x1f38,         "Dell PERC H710 Mini (monolithics)" },
       { PCI_VENDOR_INTEL,     0x9265,         "Intel (R) RAID Controller RS25DB080" },
       { PCI_VENDOR_INTEL,     0x9285,         "Intel (R) RAID Controller RS25NB008" },
       { 0x0,                  0,              "" }
};

static const
struct mfi_pci_device {
       pcireg_t                        mpd_vendor;
       pcireg_t                        mpd_product;
       enum mfi_iop                    mpd_iop;
       const struct mfi_pci_subtype    *mpd_subtype;
} mfi_pci_devices[] = {
       { PCI_VENDOR_SYMBIOS,   PCI_PRODUCT_SYMBIOS_MEGARAID_SAS,
         MFI_IOP_XSCALE,       NULL },
       { PCI_VENDOR_SYMBIOS,   PCI_PRODUCT_SYMBIOS_MEGARAID_VERDE_ZCR,
         MFI_IOP_XSCALE,       NULL },
       { PCI_VENDOR_SYMBIOS,   PCI_PRODUCT_SYMBIOS_SAS1078,
         MFI_IOP_PPC,          mfi_1078_subtypes },
       { PCI_VENDOR_SYMBIOS,   PCI_PRODUCT_SYMBIOS_SAS1078DE,
         MFI_IOP_PPC,          mfi_1078_subtypes },
       { PCI_VENDOR_DELL,      PCI_PRODUCT_DELL_PERC_5,
         MFI_IOP_XSCALE,       mfi_perc5_subtypes },
       { PCI_VENDOR_DELL,      PCI_PRODUCT_DELL_PERC_6,
         MFI_IOP_PPC,          mfi_1078_subtypes },
       { PCI_VENDOR_SYMBIOS,   PCI_PRODUCT_SYMBIOS_SAS2108_1,
         MFI_IOP_GEN2,         mfi_gen2_subtypes },
       { PCI_VENDOR_SYMBIOS,   PCI_PRODUCT_SYMBIOS_SAS2108_2,
         MFI_IOP_GEN2,         mfi_gen2_subtypes },
       { PCI_VENDOR_SYMBIOS,   PCI_PRODUCT_SYMBIOS_SAS2008_1,
         MFI_IOP_SKINNY,       mfi_skinny_subtypes },
       { PCI_VENDOR_SYMBIOS,   PCI_PRODUCT_SYMBIOS_MEGARAID_2208,
         MFI_IOP_TBOLT,        mfi_tbolt_subtypes },
};

const struct mfi_pci_device *
mfi_pci_find_device(struct pci_attach_args *pa)
{
       const struct mfi_pci_device *mpd;
       int i;

       for (i = 0; i < __arraycount(mfi_pci_devices); i++) {
               mpd = &mfi_pci_devices[i];

               if (mpd->mpd_vendor == PCI_VENDOR(pa->pa_id) &&
                   mpd->mpd_product == PCI_PRODUCT(pa->pa_id))
                       return mpd;
       }

       return NULL;
}

int
mfi_pci_match(device_t parent, cfdata_t match, void *aux)
{
       return (mfi_pci_find_device(aux) != NULL) ? 1 : 0;
}

int
mfi_pci_detach(device_t self, int flags)
{
       struct mfi_pci_softc    *psc = device_private(self);
       struct mfi_softc        *sc = &psc->psc_sc;
       int error;

       if ((error = mfi_detach(sc, flags)) != 0)
               return error;

       /* xxx */
       pci_intr_disestablish(psc->psc_pc, sc->sc_ih);
       bus_space_unmap(sc->sc_iot, sc->sc_ioh, sc->sc_size);
       return 0;
}

void
mfi_pci_attach(device_t parent, device_t self, void *aux)
{
       struct mfi_pci_softc    *psc = device_private(self);
       struct mfi_softc        *sc = &psc->psc_sc;
       struct pci_attach_args  *pa = aux;
       const struct mfi_pci_device *mpd;
       const struct mfi_pci_subtype *st;
       const char              *intrstr;
       pci_intr_handle_t       ih;
       pcireg_t                csr;
       int                     regbar;
       const char              *subtype = NULL;
       uint32_t                subsysid;
       char intrbuf[PCI_INTRSTR_LEN];

       sc->sc_dev = self;
       psc->psc_pc = pa->pa_pc;

       mpd = mfi_pci_find_device(pa);
       if (mpd == NULL) {
               aprint_error(": can't find matching pci device\n");
               return;
       }

       if (mpd->mpd_iop == MFI_IOP_GEN2 || mpd->mpd_iop == MFI_IOP_SKINNY ||
           mpd->mpd_iop == MFI_IOP_TBOLT)
               regbar = MFI_BAR_GEN2;
       else
               regbar = MFI_BAR;

       csr = pci_mapreg_type(pa->pa_pc, pa->pa_tag, regbar);
       csr |= PCI_MAPREG_MEM_TYPE_32BIT;
       if (pci_mapreg_map(pa, regbar, csr, 0,
           &sc->sc_iot, &sc->sc_ioh, NULL, &sc->sc_size)) {
               aprint_error(": can't map controller pci space\n");
               return;
       }

       sc->sc_dmat = pa->pa_dmat;
       if (mpd->mpd_iop == MFI_IOP_TBOLT && pci_dma64_available(pa)) {
               sc->sc_datadmat = pa->pa_dmat64;
               sc->sc_64bit_dma = 1;
       } else {
               sc->sc_datadmat = pa->pa_dmat;
               sc->sc_64bit_dma = 0;
       }

       if (pci_intr_map(pa, &ih)) {
               aprint_error(": can't map interrupt\n");
               bus_space_unmap(sc->sc_iot, sc->sc_ioh, sc->sc_size);
               return;
       }
       intrstr = pci_intr_string(pa->pa_pc, ih, intrbuf, sizeof(intrbuf));
       if (mpd->mpd_iop == MFI_IOP_TBOLT) {
               sc->sc_ih = pci_intr_establish_xname(pa->pa_pc, ih, IPL_BIO,
                   mfi_tbolt_intrh, sc, device_xname(self));
       } else {
               sc->sc_ih = pci_intr_establish_xname(pa->pa_pc, ih, IPL_BIO,
                   mfi_intr, sc, device_xname(self));
       }
       if (!sc->sc_ih) {
               aprint_error(": can't establish interrupt");
               if (intrstr)
                       aprint_error(" at %s", intrstr);
               aprint_error("\n");
               bus_space_unmap(sc->sc_iot, sc->sc_ioh, sc->sc_size);
               return;
       }

       subsysid = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_SUBSYS_ID_REG);
       if (mpd->mpd_subtype != NULL) {
               st = mpd->mpd_subtype;
               while (st->st_vendor != 0) {
                       if (PCI_VENDOR(subsysid) == st->st_vendor &&
                           PCI_PRODUCT(subsysid) == st->st_product) {
                               subtype = st->st_string;
                               break;
                       }
                       st++;
               }
               if (subtype) {
                       aprint_normal(": %s\n", subtype);
               } else {
                       aprint_normal(": vendor 0x%x product 0x%x\n",
                           PCI_VENDOR(subsysid), PCI_PRODUCT(subsysid));
               }
       }

       aprint_normal("%s: interrupting at %s\n", DEVNAME(sc), intrstr);

       if (mfi_attach(sc, mpd->mpd_iop)) {
               aprint_error("%s: can't attach", DEVNAME(sc));
               pci_intr_disestablish(pa->pa_pc, sc->sc_ih);
               sc->sc_ih = NULL;
               bus_space_unmap(sc->sc_iot, sc->sc_ioh, sc->sc_size);
       }
}

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