237 lines
8.0 KiB
C
237 lines
8.0 KiB
C
/*
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* Copyright (c) 2014 The DragonFly Project. All rights reserved.
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*
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* This code is derived from software contributed to The DragonFly Project
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* by Matthew Dillon <dillon@backplane.com> and was subsequently ported
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* to FreeBSD by Michael Gmelin <freebsd@grem.de>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name of The DragonFly Project nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific, prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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/*
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* Intel fourth generation mobile cpus integrated I2C device.
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*
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* See ig4_reg.h for datasheet reference and notes.
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/module.h>
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#include <sys/errno.h>
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#include <sys/lock.h>
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#include <sys/mutex.h>
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#include <sys/sx.h>
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#include <sys/syslog.h>
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#include <sys/bus.h>
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#include <machine/bus.h>
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#include <sys/rman.h>
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#include <machine/resource.h>
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#include <dev/pci/pcivar.h>
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#include <dev/pci/pcireg.h>
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#include <dev/iicbus/iiconf.h>
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#include <dev/ichiic/ig4_reg.h>
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#include <dev/ichiic/ig4_var.h>
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static int ig4iic_pci_detach(device_t dev);
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#define PCI_CHIP_LYNXPT_LP_I2C_1 0x9c618086
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#define PCI_CHIP_LYNXPT_LP_I2C_2 0x9c628086
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#define PCI_CHIP_BRASWELL_I2C_1 0x22c18086
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#define PCI_CHIP_BRASWELL_I2C_2 0x22c28086
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#define PCI_CHIP_BRASWELL_I2C_3 0x22c38086
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#define PCI_CHIP_BRASWELL_I2C_5 0x22c58086
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#define PCI_CHIP_BRASWELL_I2C_6 0x22c68086
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#define PCI_CHIP_BRASWELL_I2C_7 0x22c78086
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#define PCI_CHIP_SKYLAKE_I2C_0 0x9d608086
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#define PCI_CHIP_SKYLAKE_I2C_1 0x9d618086
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#define PCI_CHIP_SKYLAKE_I2C_2 0x9d628086
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#define PCI_CHIP_SKYLAKE_I2C_3 0x9d638086
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#define PCI_CHIP_SKYLAKE_I2C_4 0x9d648086
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#define PCI_CHIP_SKYLAKE_I2C_5 0x9d658086
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#define PCI_CHIP_KABYLAKE_I2C_0 0xa1608086
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#define PCI_CHIP_KABYLAKE_I2C_1 0xa1618086
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#define PCI_CHIP_APL_I2C_0 0x5aac8086
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#define PCI_CHIP_APL_I2C_1 0x5aae8086
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#define PCI_CHIP_APL_I2C_2 0x5ab08086
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#define PCI_CHIP_APL_I2C_3 0x5ab28086
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#define PCI_CHIP_APL_I2C_4 0x5ab48086
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#define PCI_CHIP_APL_I2C_5 0x5ab68086
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#define PCI_CHIP_APL_I2C_6 0x5ab88086
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#define PCI_CHIP_APL_I2C_7 0x5aba8086
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struct ig4iic_pci_device {
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uint32_t devid;
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const char *desc;
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enum ig4_vers version;
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};
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static struct ig4iic_pci_device ig4iic_pci_devices[] = {
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{ PCI_CHIP_LYNXPT_LP_I2C_1, "Intel Lynx Point-LP I2C Controller-1", IG4_HASWELL},
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{ PCI_CHIP_LYNXPT_LP_I2C_2, "Intel Lynx Point-LP I2C Controller-2", IG4_HASWELL},
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{ PCI_CHIP_BRASWELL_I2C_1, "Intel Braswell Serial I/O I2C Port 1", IG4_ATOM},
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{ PCI_CHIP_BRASWELL_I2C_2, "Intel Braswell Serial I/O I2C Port 2", IG4_ATOM},
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{ PCI_CHIP_BRASWELL_I2C_3, "Intel Braswell Serial I/O I2C Port 3", IG4_ATOM},
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{ PCI_CHIP_BRASWELL_I2C_5, "Intel Braswell Serial I/O I2C Port 5", IG4_ATOM},
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{ PCI_CHIP_BRASWELL_I2C_6, "Intel Braswell Serial I/O I2C Port 6", IG4_ATOM},
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{ PCI_CHIP_BRASWELL_I2C_7, "Intel Braswell Serial I/O I2C Port 7", IG4_ATOM},
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{ PCI_CHIP_SKYLAKE_I2C_0, "Intel Sunrise Point-LP I2C Controller-0", IG4_SKYLAKE},
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{ PCI_CHIP_SKYLAKE_I2C_1, "Intel Sunrise Point-LP I2C Controller-1", IG4_SKYLAKE},
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{ PCI_CHIP_SKYLAKE_I2C_2, "Intel Sunrise Point-LP I2C Controller-2", IG4_SKYLAKE},
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{ PCI_CHIP_SKYLAKE_I2C_3, "Intel Sunrise Point-LP I2C Controller-3", IG4_SKYLAKE},
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{ PCI_CHIP_SKYLAKE_I2C_4, "Intel Sunrise Point-LP I2C Controller-4", IG4_SKYLAKE},
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{ PCI_CHIP_SKYLAKE_I2C_5, "Intel Sunrise Point-LP I2C Controller-5", IG4_SKYLAKE},
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{ PCI_CHIP_KABYLAKE_I2C_0, "Intel Sunrise Point-H I2C Controller-0", IG4_SKYLAKE},
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{ PCI_CHIP_KABYLAKE_I2C_1, "Intel Sunrise Point-H I2C Controller-1", IG4_SKYLAKE},
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{ PCI_CHIP_APL_I2C_0, "Intel Apollo Lake I2C Controller-0", IG4_APL},
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{ PCI_CHIP_APL_I2C_1, "Intel Apollo Lake I2C Controller-1", IG4_APL},
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{ PCI_CHIP_APL_I2C_2, "Intel Apollo Lake I2C Controller-2", IG4_APL},
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{ PCI_CHIP_APL_I2C_3, "Intel Apollo Lake I2C Controller-3", IG4_APL},
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{ PCI_CHIP_APL_I2C_4, "Intel Apollo Lake I2C Controller-4", IG4_APL},
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{ PCI_CHIP_APL_I2C_5, "Intel Apollo Lake I2C Controller-5", IG4_APL},
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{ PCI_CHIP_APL_I2C_6, "Intel Apollo Lake I2C Controller-6", IG4_APL},
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{ PCI_CHIP_APL_I2C_7, "Intel Apollo Lake I2C Controller-7", IG4_APL}
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};
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static int
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ig4iic_pci_probe(device_t dev)
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{
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ig4iic_softc_t *sc = device_get_softc(dev);
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uint32_t devid;
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int i;
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devid = pci_get_devid(dev);
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for (i = 0; i < nitems(ig4iic_pci_devices); i++) {
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if (ig4iic_pci_devices[i].devid == devid) {
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device_set_desc(dev, ig4iic_pci_devices[i].desc);
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sc->version = ig4iic_pci_devices[i].version;
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return (BUS_PROBE_DEFAULT);
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}
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}
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return (ENXIO);
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}
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static int
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ig4iic_pci_attach(device_t dev)
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{
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ig4iic_softc_t *sc = device_get_softc(dev);
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int error;
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sc->dev = dev;
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sc->regs_rid = PCIR_BAR(0);
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sc->regs_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
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&sc->regs_rid, RF_ACTIVE);
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if (sc->regs_res == NULL) {
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device_printf(dev, "unable to map registers\n");
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ig4iic_pci_detach(dev);
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return (ENXIO);
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}
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sc->intr_rid = 0;
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if (pci_alloc_msi(dev, &sc->intr_rid)) {
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device_printf(dev, "Using MSI\n");
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}
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sc->intr_res = bus_alloc_resource_any(dev, SYS_RES_IRQ,
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&sc->intr_rid, RF_SHAREABLE | RF_ACTIVE);
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if (sc->intr_res == NULL) {
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device_printf(dev, "unable to map interrupt\n");
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ig4iic_pci_detach(dev);
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return (ENXIO);
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}
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sc->platform_attached = 1;
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error = ig4iic_attach(sc);
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if (error)
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ig4iic_pci_detach(dev);
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return (error);
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}
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static int
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ig4iic_pci_detach(device_t dev)
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{
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ig4iic_softc_t *sc = device_get_softc(dev);
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int error;
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if (sc->platform_attached) {
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error = ig4iic_detach(sc);
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if (error)
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return (error);
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sc->platform_attached = 0;
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}
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if (sc->intr_res) {
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bus_release_resource(dev, SYS_RES_IRQ,
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sc->intr_rid, sc->intr_res);
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sc->intr_res = NULL;
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}
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if (sc->intr_rid != 0)
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pci_release_msi(dev);
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if (sc->regs_res) {
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bus_release_resource(dev, SYS_RES_MEMORY,
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sc->regs_rid, sc->regs_res);
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sc->regs_res = NULL;
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}
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return (0);
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}
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static device_method_t ig4iic_pci_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, ig4iic_pci_probe),
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DEVMETHOD(device_attach, ig4iic_pci_attach),
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DEVMETHOD(device_detach, ig4iic_pci_detach),
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DEVMETHOD(iicbus_transfer, ig4iic_transfer),
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DEVMETHOD(iicbus_reset, ig4iic_reset),
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DEVMETHOD(iicbus_callback, iicbus_null_callback),
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DEVMETHOD_END
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};
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static driver_t ig4iic_pci_driver = {
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"ig4iic_pci",
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ig4iic_pci_methods,
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sizeof(struct ig4iic_softc)
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};
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static devclass_t ig4iic_pci_devclass;
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DRIVER_MODULE_ORDERED(ig4iic_pci, pci, ig4iic_pci_driver, ig4iic_pci_devclass, 0, 0,
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SI_ORDER_ANY);
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MODULE_DEPEND(ig4iic_pci, pci, 1, 1, 1);
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MODULE_DEPEND(ig4iic_pci, iicbus, IICBUS_MINVER, IICBUS_PREFVER, IICBUS_MAXVER);
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MODULE_VERSION(ig4iic_pci, 1);
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MODULE_PNP_INFO("W32:vendor/device", pci, ig4iic_pci, ig4iic_pci_devices,
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nitems(ig4iic_pci_devices));
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