/*-
 * ichsmb_pci.c
 *
 * Author: Archie Cobbs <archie@freebsd.org>
 * Copyright (c) 2000 Whistle Communications, Inc.
 * All rights reserved.
 * Author: Archie Cobbs <archie@freebsd.org>
 *
 * Subject to the following obligations and disclaimer of warranty, use and
 * redistribution of this software, in source or object code forms, with or
 * without modifications are expressly permitted by Whistle Communications;
 * provided, however, that:
 * 1. Any and all reproductions of the source or object code must include the
 *    copyright notice above and the following disclaimer of warranties; and
 * 2. No rights are granted, in any manner or form, to use Whistle
 *    Communications, Inc. trademarks, including the mark "WHISTLE
 *    COMMUNICATIONS" on advertising, endorsements, or otherwise except as
 *    such appears in the above copyright notice or in the software.
 *
 * THIS SOFTWARE IS BEING PROVIDED BY WHISTLE COMMUNICATIONS "AS IS", AND
 * TO THE MAXIMUM EXTENT PERMITTED BY LAW, WHISTLE COMMUNICATIONS MAKES NO
 * REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE,
 * INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
 * WHISTLE COMMUNICATIONS DOES NOT WARRANT, GUARANTEE, OR MAKE ANY
 * REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE USE OF THIS
 * SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE.
 * IN NO EVENT SHALL WHISTLE COMMUNICATIONS BE LIABLE FOR ANY DAMAGES
 * RESULTING FROM OR ARISING OUT OF ANY USE OF THIS SOFTWARE, INCLUDING
 * WITHOUT LIMITATION, ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
 * PUNITIVE, OR CONSEQUENTIAL DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER 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 WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY
 * OF SUCH DAMAGE.
 *
 * $FreeBSD: src/sys/dev/ichsmb/ichsmb_pci.c,v 1.25 2009/12/16 12:25:27 avg Exp $
 */

/*
 * Support for the SMBus controller logical device which is part of the
 * Intel 81801AA/AB/BA/CA/DC/EB (ICH/ICH[02345]) I/O controller hub chips.
 */

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/errno.h>
#include <sys/lock.h>
#include <sys/syslog.h>
#include <sys/bus.h>

#include <sys/rman.h>

#include <bus/pci/pcivar.h>
#include <bus/pci/pcireg.h>

#include <bus/smbus/smbconf.h>

#include <bus/smbus/ichsmb/ichsmb_var.h>
#include <bus/smbus/ichsmb/ichsmb_reg.h>

/* PCI unique identifiers */
#define PCI_VENDOR_INTEL                0x8086
#define ID_82801AA                      0x2413
#define ID_82801AB                      0x2423
#define ID_82801BA                      0x2443
#define ID_82801CA                      0x2483
#define ID_82801DC                      0x24C3
#define ID_82801EB                      0x24D3
#define ID_82801FB                      0x266A
#define ID_82801GB                      0x27da
#define ID_82801H                       0x283e
#define ID_82801I                       0x2930
#define ID_EP80579                      0x5032
#define ID_82801JI                      0x3a30
#define ID_82801JD                      0x3a60
#define ID_PCH                          0x3b30
#define ID_6300ESB                      0x25a4
#define ID_631xESB                      0x269b
#define ID_DH89XXCC                     0x2330
#define ID_PATSBURG                     0x1d22
#define ID_CPT                          0x1c22
#define ID_PPT                          0x1e22
#define ID_AVOTON                       0x1f3c
#define ID_COLETOCRK                    0x23B0
#define ID_LPT                          0x8c22
#define ID_LPTLP                        0x9c22
#define ID_WCPT                         0x8ca2
#define ID_WCPTLP                       0x9ca2
#define ID_BAYTRAIL                     0x0f12
#define ID_BRASWELL                     0x2292
#define ID_WELLSBURG                    0x8d22
#define ID_SRPT                         0xa123
#define ID_SRPTLP                       0x9d23
#define ID_DENVERTON                    0x19df
#define ID_BROXTON                      0x5ad4
#define ID_LEWISBURG                    0xa1a3
#define ID_LEWISBURG2                   0xa223
#define ID_KABYLAKE                     0xa2a3
#define ID_CANNONLAKE                   0xa323
#define ID_COMETLAKE                    0x02a3
#define ID_COMETLAKE2                   0x06a3
#define ID_TIGERLAKE                    0xa0a3
#define ID_TIGERLAKE2                   0x43a3
#define ID_GEMINILAKE                   0x31d4

static const struct ichsmb_device {
        uint16_t        id;
        const char      *name;
} ichsmb_devices[] = {
        { ID_82801AA,   "Intel 82801AA (ICH) SMBus controller"          },
        { ID_82801AB,   "Intel 82801AB (ICH0) SMBus controller"         },
        { ID_82801BA,   "Intel 82801BA (ICH2) SMBus controller"         },
        { ID_82801CA,   "Intel 82801CA (ICH3) SMBus controller"         },
        { ID_82801DC,   "Intel 82801DC (ICH4) SMBus controller"         },
        { ID_82801EB,   "Intel 82801EB (ICH5) SMBus controller"         },
        { ID_82801FB,   "Intel 82801FB (ICH6) SMBus controller"         },
        { ID_82801GB,   "Intel 82801GB (ICH7) SMBus controller"         },
        { ID_82801H,    "Intel 82801H (ICH8) SMBus controller"          },
        { ID_82801I,    "Intel 82801I (ICH9) SMBus controller"          },
        { ID_82801GB,   "Intel 82801GB (ICH7) SMBus controller"         },
        { ID_82801H,    "Intel 82801H (ICH8) SMBus controller"          },
        { ID_82801I,    "Intel 82801I (ICH9) SMBus controller"          },
        { ID_EP80579,   "Intel EP80579 SMBus controller"                },
        { ID_82801JI,   "Intel 82801JI (ICH10) SMBus controller"        },
        { ID_82801JD,   "Intel 82801JD (ICH10) SMBus controller"        },
        { ID_PCH,       "Intel PCH SMBus controller"                    },
        { ID_6300ESB,   "Intel 6300ESB (ICH) SMBus controller"          },
        { ID_631xESB,   "Intel 631xESB/6321ESB (ESB2) SMBus controller" },
        { ID_DH89XXCC,  "Intel DH89xxCC SMBus controller"               },
        { ID_PATSBURG,  "Intel Patsburg SMBus controller"               },
        { ID_CPT,       "Intel Cougar Point SMBus controller"           },
        { ID_PPT,       "Intel Panther Point SMBus controller"          },
        { ID_AVOTON,    "Intel Avoton SMBus controller"                 },
        { ID_LPT,       "Intel Lynx Point SMBus controller"             },
        { ID_LPTLP,     "Intel Lynx Point-LP SMBus controller"          },
        { ID_WCPT,      "Intel Wildcat Point SMBus controller"          },
        { ID_WCPTLP,    "Intel Wildcat Point-LP SMBus controller"       },
        { ID_BAYTRAIL,  "Intel Baytrail SMBus controller"               },
        { ID_BRASWELL,  "Intel Braswell SMBus controller"               },
        { ID_COLETOCRK, "Intel Coleto Creek SMBus controller"           },
        { ID_WELLSBURG, "Intel Wellsburg SMBus controller"              },
        { ID_SRPT,      "Intel Sunrise Point-H SMBus controller"        },
        { ID_SRPTLP,    "Intel Sunrise Point-LP SMBus controller"       },
        { ID_DENVERTON, "Intel Denverton SMBus controller"              },
        { ID_BROXTON,   "Intel Broxton SMBus controller"                },
        { ID_LEWISBURG, "Intel Lewisburg SMBus controller"              },
        { ID_LEWISBURG2,"Intel Lewisburg SMBus controller"              },
        { ID_KABYLAKE,  "Intel Kaby Lake SMBus controller"              },
        { ID_CANNONLAKE,"Intel Cannon Lake SMBus controller"            },
        { ID_COMETLAKE, "Intel Comet Lake SMBus controller"             },
        { ID_COMETLAKE2,"Intel Comet Lake SMBus controller"             },
        { ID_TIGERLAKE, "Intel Tiger Lake SMBus controller"             },
        { ID_TIGERLAKE2,"Intel Tiger Lake SMBus controller"             },
        { ID_GEMINILAKE,"Intel Gemini Lake SMBus controller"            },
        { 0, NULL },
};

/* Internal functions */
static int      ichsmb_pci_probe(device_t dev);
static int      ichsmb_pci_attach(device_t dev);
/*Use generic one for now*/
#if 0
static int      ichsmb_pci_detach(device_t dev);
#endif

/* Device methods */
static device_method_t ichsmb_pci_methods[] = {
        /* Device interface */
        DEVMETHOD(device_probe, ichsmb_pci_probe),
        DEVMETHOD(device_attach, ichsmb_pci_attach),
        DEVMETHOD(device_detach, ichsmb_detach),

        /* Bus methods */
        DEVMETHOD(bus_print_child, bus_generic_print_child),

        /* SMBus methods */
        DEVMETHOD(smbus_callback, ichsmb_callback),
        DEVMETHOD(smbus_quick, ichsmb_quick),
        DEVMETHOD(smbus_sendb, ichsmb_sendb),
        DEVMETHOD(smbus_recvb, ichsmb_recvb),
        DEVMETHOD(smbus_writeb, ichsmb_writeb),
        DEVMETHOD(smbus_writew, ichsmb_writew),
        DEVMETHOD(smbus_readb, ichsmb_readb),
        DEVMETHOD(smbus_readw, ichsmb_readw),
        DEVMETHOD(smbus_pcall, ichsmb_pcall),
        DEVMETHOD(smbus_bwrite, ichsmb_bwrite),
        DEVMETHOD(smbus_bread, ichsmb_bread),
        DEVMETHOD_END
};

static driver_t ichsmb_pci_driver = {
        "ichsmb",
        ichsmb_pci_methods,
        sizeof(struct ichsmb_softc)
};

static devclass_t ichsmb_pci_devclass;

DRIVER_MODULE(ichsmb, pci, ichsmb_pci_driver, ichsmb_pci_devclass, NULL, NULL);

static int
ichsmb_pci_probe(device_t dev)
{
        const struct ichsmb_device *device;

        for (device = ichsmb_devices; device->name != NULL; device++) {
                if (pci_get_device(dev) == device->id) {
                        device_set_desc(dev, device->name);
                        return (ichsmb_probe(dev));
                }
        }

        return (ENXIO);
}

static int
ichsmb_pci_attach(device_t dev)
{
        const sc_p sc = device_get_softc(dev);
        int error;

        /* Initialize private state */
        bzero(sc, sizeof(*sc));
        sc->ich_cmd = -1;
        sc->dev = dev;

        /* Allocate an I/O range */
        sc->io_rid = ICH_SMB_BASE;
        sc->io_res = bus_alloc_resource(dev, SYS_RES_IOPORT,
            &sc->io_rid, 0, ~0, 16, RF_ACTIVE);
        if (sc->io_res == NULL)
                sc->io_res = bus_alloc_resource(dev, SYS_RES_IOPORT,
                    &sc->io_rid, 0ul, ~0ul, 32, RF_ACTIVE);
        if (sc->io_res == NULL) {
                device_printf(dev, "can't map I/O\n");
                error = ENXIO;
                goto fail;
        }

        /* Allocate interrupt */
        sc->irq_rid = 0;
        sc->irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ,
            &sc->irq_rid, RF_ACTIVE | RF_SHAREABLE);
        if (sc->irq_res == NULL) {
                device_printf(dev, "can't get IRQ\n");
                error = ENXIO;
                goto fail;
        }

        /* Enable device */
        pci_write_config(dev, ICH_HOSTC, ICH_HOSTC_HST_EN, 1);

        /* Done */
        error = ichsmb_attach(dev);
        if (error)
                goto fail;
        return (0);

fail:
        /* Attach failed, release resources */
        ichsmb_release_resources(sc);
        return (error);
}


MODULE_DEPEND(ichsmb, pci, 1, 1, 1);
MODULE_DEPEND(ichsmb, smbus, SMBUS_MINVER, SMBUS_PREFVER, SMBUS_MAXVER);
MODULE_VERSION(ichsmb, 1);