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925 lines
21 KiB
C
925 lines
21 KiB
C
/*-
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* Copyright (c) 2001 Alcove - Nicolas Souchu
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* All rights reserved.
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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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* 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 the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT 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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* $FreeBSD$
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*
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*/
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#include <sys/param.h>
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#include <sys/kernel.h>
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#include <sys/systm.h>
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#include <sys/module.h>
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#include <sys/bus.h>
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#include <sys/uio.h>
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#include <machine/bus_pio.h>
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#include <machine/bus_memio.h>
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#include <machine/bus.h>
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#include <machine/clock.h> /* for DELAY */
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#include <machine/resource.h>
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#include <sys/rman.h>
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#include <pci/pcivar.h>
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#include <pci/pcireg.h>
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#include <dev/iicbus/iiconf.h>
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#include <dev/iicbus/iicbus.h>
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#include <dev/smbus/smbconf.h>
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#include <dev/smbus/smbus.h>
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#include "iicbb_if.h"
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#include "smbus_if.h"
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#define VIAPM_DEBUG(x) if (viapm_debug) (x)
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#ifdef DEBUG
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static int viapm_debug = 1;
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#else
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static int viapm_debug = 0;
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#endif
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#define VIA_586B_PMU_ID 0x30401106
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#define VIA_596A_PMU_ID 0x30501106
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#define VIA_596B_PMU_ID 0x30511106
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#define VIA_686A_PMU_ID 0x30571106
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#define VIA_8233_PMU_ID 0x30741106
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#define VIAPM_INB(port) \
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((u_char)bus_space_read_1(viapm->st, viapm->sh, port))
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#define VIAPM_OUTB(port,val) \
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(bus_space_write_1(viapm->st, viapm->sh, port, (u_char)(val)))
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#define VIAPM_TYP_UNKNOWN 0
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#define VIAPM_TYP_586B_3040E 1
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#define VIAPM_TYP_586B_3040F 2
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#define VIAPM_TYP_596B 3
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#define VIAPM_TYP_686A 4
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#define VIAPM_TYP_8233 5
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struct viapm_softc {
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int type;
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u_int32_t base;
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bus_space_tag_t st;
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bus_space_handle_t sh;
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int iorid;
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int irqrid;
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struct resource *iores;
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struct resource *irqres;
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void *irqih;
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device_t iicbb;
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device_t smbus;
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};
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static devclass_t viapm_devclass;
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static devclass_t viapropm_devclass;
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/*
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* VT82C586B definitions
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*/
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#define VIAPM_586B_REVID 0x08
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#define VIAPM_586B_3040E_BASE 0x20
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#define VIAPM_586B_3040E_ACTIV 0x4 /* 16 bits */
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#define VIAPM_586B_3040F_BASE 0x48
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#define VIAPM_586B_3040F_ACTIV 0x41 /* 8 bits */
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#define VIAPM_586B_OEM_REV_E 0x00
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#define VIAPM_586B_OEM_REV_F 0x01
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#define VIAPM_586B_PROD_REV_A 0x10
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#define VIAPM_586B_BA_MASK 0x0000ff00
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#define GPIO_DIR 0x40
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#define GPIO_VAL 0x42
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#define EXTSMI_VAL 0x44
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#define VIAPM_SCL 0x02 /* GPIO1_VAL */
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#define VIAPM_SDA 0x04 /* GPIO2_VAL */
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/*
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* VIAPRO common definitions
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*/
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#define VIAPM_PRO_BA_MASK 0x0000fff0
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#define VIAPM_PRO_SMBCTRL 0xd2
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#define VIAPM_PRO_REVID 0xd6
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/*
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* VT82C686A definitions
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*/
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#define VIAPM_PRO_BASE 0x90
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#define SMBHST 0x0
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#define SMBHSL 0x1
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#define SMBHCTRL 0x2
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#define SMBHCMD 0x3
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#define SMBHADDR 0x4
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#define SMBHDATA0 0x5
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#define SMBHDATA1 0x6
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#define SMBHBLOCK 0x7
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#define SMBSST 0x1
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#define SMBSCTRL 0x8
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#define SMBSSDWCMD 0x9
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#define SMBSEVENT 0xa
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#define SMBSDATA 0xc
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#define SMBHST_RESERVED 0xef /* reserved bits */
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#define SMBHST_FAILED 0x10 /* failed bus transaction */
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#define SMBHST_COLLID 0x08 /* bus collision */
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#define SMBHST_ERROR 0x04 /* device error */
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#define SMBHST_INTR 0x02 /* command completed */
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#define SMBHST_BUSY 0x01 /* host busy */
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#define SMBHCTRL_START 0x40 /* start command */
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#define SMBHCTRL_PROTO 0x1c /* command protocol mask */
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#define SMBHCTRL_QUICK 0x00
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#define SMBHCTRL_SENDRECV 0x04
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#define SMBHCTRL_BYTE 0x08
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#define SMBHCTRL_WORD 0x0c
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#define SMBHCTRL_BLOCK 0x14
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#define SMBHCTRL_KILL 0x02 /* stop the current transaction */
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#define SMBHCTRL_ENABLE 0x01 /* enable interrupts */
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#define SMBSCTRL_ENABLE 0x01 /* enable slave */
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/*
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* VIA8233 definitions
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*/
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#define VIAPM_8233_BASE 0xD0
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static int
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viapm_586b_probe(device_t dev)
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{
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struct viapm_softc *viapm = (struct viapm_softc *)device_get_softc(dev);
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u_int32_t l;
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u_int16_t s;
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u_int8_t c;
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switch (pci_get_devid(dev)) {
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case VIA_586B_PMU_ID:
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bzero(viapm, sizeof(struct viapm_softc));
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l = pci_read_config(dev, VIAPM_586B_REVID, 1);
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switch (l) {
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case VIAPM_586B_OEM_REV_E:
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viapm->type = VIAPM_TYP_586B_3040E;
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viapm->iorid = VIAPM_586B_3040E_BASE;
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/* Activate IO block access */
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s = pci_read_config(dev, VIAPM_586B_3040E_ACTIV, 2);
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pci_write_config(dev, VIAPM_586B_3040E_ACTIV, s | 0x1, 2);
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break;
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case VIAPM_586B_OEM_REV_F:
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case VIAPM_586B_PROD_REV_A:
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default:
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viapm->type = VIAPM_TYP_586B_3040F;
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viapm->iorid = VIAPM_586B_3040F_BASE;
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/* Activate IO block access */
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c = pci_read_config(dev, VIAPM_586B_3040F_ACTIV, 1);
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pci_write_config(dev, VIAPM_586B_3040F_ACTIV, c | 0x80, 1);
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break;
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}
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viapm->base = pci_read_config(dev, viapm->iorid, 4) &
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VIAPM_586B_BA_MASK;
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/*
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* We have to set the I/O resources by hand because it is
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* described outside the viapmope of the traditional maps
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*/
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if (bus_set_resource(dev, SYS_RES_IOPORT, viapm->iorid,
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viapm->base, 256)) {
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device_printf(dev, "could not set bus resource\n");
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return ENXIO;
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}
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device_set_desc(dev, "VIA VT82C586B Power Management Unit");
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return 0;
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default:
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break;
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}
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return ENXIO;
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}
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static int
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viapm_pro_probe(device_t dev)
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{
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struct viapm_softc *viapm = (struct viapm_softc *)device_get_softc(dev);
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#ifdef VIAPM_BASE_ADDR
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u_int32_t l;
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#endif
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u_int32_t base_cfgreg;
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char *desc;
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switch (pci_get_devid(dev)) {
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case VIA_596A_PMU_ID:
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desc = "VIA VT82C596A Power Management Unit";
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viapm->type = VIAPM_TYP_596B;
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base_cfgreg = VIAPM_PRO_BASE;
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goto viapro;
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case VIA_596B_PMU_ID:
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desc = "VIA VT82C596B Power Management Unit";
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viapm->type = VIAPM_TYP_596B;
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base_cfgreg = VIAPM_PRO_BASE;
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goto viapro;
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case VIA_686A_PMU_ID:
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desc = "VIA VT82C686A Power Management Unit";
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viapm->type = VIAPM_TYP_686A;
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base_cfgreg = VIAPM_PRO_BASE;
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goto viapro;
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case VIA_8233_PMU_ID:
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desc = "VIA VT8233 Power Management Unit";
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viapm->type = VIAPM_TYP_UNKNOWN;
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base_cfgreg = VIAPM_8233_BASE;
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goto viapro;
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viapro:
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#ifdef VIAPM_BASE_ADDR
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/* force VIAPM I/O base address */
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/* enable the SMBus controller function */
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l = pci_read_config(dev, VIAPM_PRO_SMBCTRL, 1);
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pci_write_config(dev, VIAPM_PRO_SMBCTRL, l | 1, 1);
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/* write the base address */
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pci_write_config(dev, base_cfgreg,
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VIAPM_BASE_ADDR & VIAPM_PRO_BA_MASK, 4);
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#endif
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viapm->base = pci_read_config(dev, base_cfgreg, 4) & VIAPM_PRO_BA_MASK;
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/*
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* We have to set the I/O resources by hand because it is
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* described outside the viapmope of the traditional maps
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*/
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viapm->iorid = base_cfgreg;
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if (bus_set_resource(dev, SYS_RES_IOPORT, viapm->iorid,
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viapm->base, 16)) {
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device_printf(dev, "could not set bus resource 0x%x\n",
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viapm->base);
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return ENXIO;
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}
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if (1 || bootverbose) {
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device_printf(dev, "SMBus I/O base at 0x%x\n", viapm->base);
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}
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device_set_desc(dev, desc);
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return 0;
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default:
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break;
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}
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return ENXIO;
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}
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static int
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viapm_pro_attach(device_t dev)
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{
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struct viapm_softc *viapm = (struct viapm_softc *)device_get_softc(dev);
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u_int32_t l;
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if (!(viapm->iores = bus_alloc_resource(dev, SYS_RES_IOPORT,
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&viapm->iorid, 0l, ~0l, 1, RF_ACTIVE))) {
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device_printf(dev, "could not allocate bus space\n");
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goto error;
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}
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viapm->st = rman_get_bustag(viapm->iores);
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viapm->sh = rman_get_bushandle(viapm->iores);
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#if notyet
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/* force irq 9 */
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l = pci_read_config(dev, VIAPM_PRO_SMBCTRL, 1);
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pci_write_config(dev, VIAPM_PRO_SMBCTRL, l | 0x80, 1);
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viapm->irqrid = 0;
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if (!(viapm->irqres = bus_alloc_resource(dev, SYS_RES_IRQ,
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&viapm->irqrid, 9, 9, 1,
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RF_SHAREABLE | RF_ACTIVE))) {
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device_printf(dev, "could not allocate irq\n");
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goto error;
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}
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if (bus_setup_intr(dev, viapm->irqres, INTR_TYPE_MISC,
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(driver_intr_t *) viasmb_intr, viapm, &viapm->irqih)) {
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device_printf(dev, "could not setup irq\n");
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goto error;
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}
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#endif
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if (1 | bootverbose) {
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l = pci_read_config(dev, VIAPM_PRO_REVID, 1);
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device_printf(dev, "SMBus revision code 0x%x\n", l);
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}
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viapm->smbus = device_add_child(dev, "smbus", -1);
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/* probe and attach the smbus */
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bus_generic_attach(dev);
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/* disable slave function */
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VIAPM_OUTB(SMBSCTRL, VIAPM_INB(SMBSCTRL) & ~SMBSCTRL_ENABLE);
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/* enable the SMBus controller function */
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l = pci_read_config(dev, VIAPM_PRO_SMBCTRL, 1);
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pci_write_config(dev, VIAPM_PRO_SMBCTRL, l | 1, 1);
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#if notyet
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/* enable interrupts */
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VIAPM_OUTB(SMBHCTRL, VIAPM_INB(SMBHCTRL) | SMBHCTRL_ENABLE);
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#endif
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return 0;
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error:
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if (viapm->iores)
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bus_release_resource(dev, SYS_RES_IOPORT, viapm->iorid, viapm->iores);
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#if notyet
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if (viapm->irqres)
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bus_release_resource(dev, SYS_RES_IRQ, viapm->irqrid, viapm->irqres);
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#endif
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return ENXIO;
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}
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static int
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viapm_586b_attach(device_t dev)
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{
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struct viapm_softc *viapm = (struct viapm_softc *)device_get_softc(dev);
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if (!(viapm->iores = bus_alloc_resource(dev, SYS_RES_IOPORT,
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&viapm->iorid, 0ul, ~0ul, 1, RF_ACTIVE | RF_SHAREABLE))) {
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device_printf(dev, "could not allocate bus resource\n");
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return ENXIO;
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}
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viapm->st = rman_get_bustag(viapm->iores);
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viapm->sh = rman_get_bushandle(viapm->iores);
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VIAPM_OUTB(GPIO_DIR, VIAPM_INB(GPIO_DIR) | VIAPM_SCL | VIAPM_SDA);
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/* add generic bit-banging code */
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if (!(viapm->iicbb = device_add_child(dev, "iicbb", -1)))
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goto error;
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bus_generic_attach(dev);
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return 0;
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error:
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if (viapm->iores)
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bus_release_resource(dev, SYS_RES_IOPORT,
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viapm->iorid, viapm->iores);
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return ENXIO;
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}
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static int
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viapm_586b_detach(device_t dev)
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{
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struct viapm_softc *viapm = (struct viapm_softc *)device_get_softc(dev);
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int error;
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bus_generic_detach(dev);
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if (viapm->iicbb) {
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device_delete_child(dev, viapm->iicbb);
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}
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if (viapm->iores && (error = bus_release_resource(dev, SYS_RES_IOPORT,
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viapm->iorid, viapm->iores)))
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return (error);
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return 0;
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}
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static int
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viapm_pro_detach(device_t dev)
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{
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struct viapm_softc *viapm = (struct viapm_softc *)device_get_softc(dev);
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int error;
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bus_generic_detach(dev);
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if (viapm->smbus) {
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device_delete_child(dev, viapm->smbus);
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}
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if ((error = bus_release_resource(dev, SYS_RES_IOPORT,
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viapm->iorid, viapm->iores)))
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return (error);
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#if notyet
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if ((error = bus_release_resource(dev, SYS_RES_IRQ,
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viapm->irqrid, viapm->irqres))
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return (error);
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#endif
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return 0;
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}
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static int
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viabb_callback(device_t dev, int index, caddr_t *data)
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{
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return 0;
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}
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static void
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viabb_setscl(device_t dev, int ctrl)
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{
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struct viapm_softc *viapm = device_get_softc(dev);
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u_char val;
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val = VIAPM_INB(GPIO_VAL);
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if (ctrl)
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val |= VIAPM_SCL;
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else
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val &= ~VIAPM_SCL;
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VIAPM_OUTB(GPIO_VAL, val);
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return;
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}
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static void
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viabb_setsda(device_t dev, int data)
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{
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struct viapm_softc *viapm = device_get_softc(dev);
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u_char val;
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val = VIAPM_INB(GPIO_VAL);
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if (data)
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val |= VIAPM_SDA;
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else
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val &= ~VIAPM_SDA;
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VIAPM_OUTB(GPIO_VAL, val);
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return;
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}
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static int
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viabb_reset(device_t dev, u_char speed, u_char addr, u_char *oldaddr)
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{
|
|
/* reset bus */
|
|
viabb_setsda(dev, 1);
|
|
viabb_setscl(dev, 1);
|
|
|
|
return (IIC_ENOADDR);
|
|
}
|
|
|
|
static int
|
|
viabb_getscl(device_t dev)
|
|
{
|
|
struct viapm_softc *viapm = device_get_softc(dev);
|
|
|
|
return ((VIAPM_INB(EXTSMI_VAL) & VIAPM_SCL) != 0);
|
|
}
|
|
|
|
static int
|
|
viabb_getsda(device_t dev)
|
|
{
|
|
struct viapm_softc *viapm = device_get_softc(dev);
|
|
|
|
return ((VIAPM_INB(EXTSMI_VAL) & VIAPM_SDA) != 0);
|
|
}
|
|
|
|
static int
|
|
viapm_abort(struct viapm_softc *viapm)
|
|
{
|
|
VIAPM_OUTB(SMBHCTRL, SMBHCTRL_KILL);
|
|
DELAY(10);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
viapm_clear(struct viapm_softc *viapm)
|
|
{
|
|
VIAPM_OUTB(SMBHST, SMBHST_FAILED | SMBHST_COLLID |
|
|
SMBHST_ERROR | SMBHST_INTR);
|
|
DELAY(10);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
viapm_busy(struct viapm_softc *viapm)
|
|
{
|
|
u_char sts;
|
|
|
|
sts = VIAPM_INB(SMBHST);
|
|
|
|
VIAPM_DEBUG(printf("viapm: idle? STS=0x%x\n", sts));
|
|
|
|
return (sts & SMBHST_BUSY);
|
|
}
|
|
|
|
/*
|
|
* Poll the SMBus controller
|
|
*/
|
|
static int
|
|
viapm_wait(struct viapm_softc *viapm)
|
|
{
|
|
int count = 10000;
|
|
u_char sts = 0;
|
|
int error;
|
|
|
|
/* wait for command to complete and SMBus controller is idle */
|
|
while(count--) {
|
|
DELAY(10);
|
|
sts = VIAPM_INB(SMBHST);
|
|
|
|
/* check if the controller is processing a command */
|
|
if (!(sts & SMBHST_BUSY) && (sts & SMBHST_INTR))
|
|
break;
|
|
}
|
|
|
|
VIAPM_DEBUG(printf("viapm: SMBHST=0x%x\n", sts));
|
|
|
|
error = SMB_ENOERR;
|
|
|
|
if (!count)
|
|
error |= SMB_ETIMEOUT;
|
|
|
|
if (sts & SMBHST_FAILED)
|
|
error |= SMB_EABORT;
|
|
|
|
if (sts & SMBHST_COLLID)
|
|
error |= SMB_ENOACK;
|
|
|
|
if (sts & SMBHST_ERROR)
|
|
error |= SMB_EBUSERR;
|
|
|
|
if (error != SMB_ENOERR)
|
|
viapm_abort(viapm);
|
|
|
|
viapm_clear(viapm);
|
|
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
viasmb_callback(device_t dev, int index, caddr_t *data)
|
|
{
|
|
int error = 0;
|
|
|
|
switch (index) {
|
|
case SMB_REQUEST_BUS:
|
|
case SMB_RELEASE_BUS:
|
|
/* ok, bus allocation accepted */
|
|
break;
|
|
default:
|
|
error = EINVAL;
|
|
}
|
|
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
viasmb_quick(device_t dev, u_char slave, int how)
|
|
{
|
|
struct viapm_softc *viapm = (struct viapm_softc *)device_get_softc(dev);
|
|
int error;
|
|
|
|
viapm_clear(viapm);
|
|
if (viapm_busy(viapm))
|
|
return (EBUSY);
|
|
|
|
switch (how) {
|
|
case SMB_QWRITE:
|
|
VIAPM_DEBUG(printf("viapm: QWRITE to 0x%x", slave));
|
|
VIAPM_OUTB(SMBHADDR, slave & ~LSB);
|
|
break;
|
|
case SMB_QREAD:
|
|
VIAPM_DEBUG(printf("viapm: QREAD to 0x%x", slave));
|
|
VIAPM_OUTB(SMBHADDR, slave | LSB);
|
|
break;
|
|
default:
|
|
panic("%s: unknown QUICK command (%x)!", __FUNCTION__,
|
|
how);
|
|
}
|
|
|
|
VIAPM_OUTB(SMBHCTRL, SMBHCTRL_START | SMBHCTRL_QUICK);
|
|
|
|
error = viapm_wait(viapm);
|
|
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
viasmb_sendb(device_t dev, u_char slave, char byte)
|
|
{
|
|
struct viapm_softc *viapm = (struct viapm_softc *)device_get_softc(dev);
|
|
int error;
|
|
|
|
viapm_clear(viapm);
|
|
if (viapm_busy(viapm))
|
|
return (EBUSY);
|
|
|
|
VIAPM_OUTB(SMBHADDR, slave & ~ LSB);
|
|
VIAPM_OUTB(SMBHCMD, byte);
|
|
|
|
VIAPM_OUTB(SMBHCTRL, SMBHCTRL_START | SMBHCTRL_SENDRECV);
|
|
|
|
error = viapm_wait(viapm);
|
|
|
|
VIAPM_DEBUG(printf("viapm: SENDB to 0x%x, byte=0x%x, error=0x%x\n", slave, byte, error));
|
|
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
viasmb_recvb(device_t dev, u_char slave, char *byte)
|
|
{
|
|
struct viapm_softc *viapm = (struct viapm_softc *)device_get_softc(dev);
|
|
int error;
|
|
|
|
viapm_clear(viapm);
|
|
if (viapm_busy(viapm))
|
|
return (EBUSY);
|
|
|
|
VIAPM_OUTB(SMBHADDR, slave | LSB);
|
|
|
|
VIAPM_OUTB(SMBHCTRL, SMBHCTRL_START | SMBHCTRL_SENDRECV);
|
|
|
|
if ((error = viapm_wait(viapm)) == SMB_ENOERR)
|
|
*byte = VIAPM_INB(SMBHDATA0);
|
|
|
|
VIAPM_DEBUG(printf("viapm: RECVB from 0x%x, byte=0x%x, error=0x%x\n", slave, *byte, error));
|
|
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
viasmb_writeb(device_t dev, u_char slave, char cmd, char byte)
|
|
{
|
|
struct viapm_softc *viapm = (struct viapm_softc *)device_get_softc(dev);
|
|
int error;
|
|
|
|
viapm_clear(viapm);
|
|
if (viapm_busy(viapm))
|
|
return (EBUSY);
|
|
|
|
VIAPM_OUTB(SMBHADDR, slave & ~ LSB);
|
|
VIAPM_OUTB(SMBHCMD, cmd);
|
|
VIAPM_OUTB(SMBHDATA0, byte);
|
|
|
|
VIAPM_OUTB(SMBHCTRL, SMBHCTRL_START | SMBHCTRL_BYTE);
|
|
|
|
error = viapm_wait(viapm);
|
|
|
|
VIAPM_DEBUG(printf("viapm: WRITEB to 0x%x, cmd=0x%x, byte=0x%x, error=0x%x\n", slave, cmd, byte, error));
|
|
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
viasmb_readb(device_t dev, u_char slave, char cmd, char *byte)
|
|
{
|
|
struct viapm_softc *viapm = (struct viapm_softc *)device_get_softc(dev);
|
|
int error;
|
|
|
|
viapm_clear(viapm);
|
|
if (viapm_busy(viapm))
|
|
return (EBUSY);
|
|
|
|
VIAPM_OUTB(SMBHADDR, slave | LSB);
|
|
VIAPM_OUTB(SMBHCMD, cmd);
|
|
|
|
VIAPM_OUTB(SMBHCTRL, SMBHCTRL_START | SMBHCTRL_BYTE);
|
|
|
|
if ((error = viapm_wait(viapm)) == SMB_ENOERR)
|
|
*byte = VIAPM_INB(SMBHDATA0);
|
|
|
|
VIAPM_DEBUG(printf("viapm: READB from 0x%x, cmd=0x%x, byte=0x%x, error=0x%x\n", slave, cmd, *byte, error));
|
|
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
viasmb_writew(device_t dev, u_char slave, char cmd, short word)
|
|
{
|
|
struct viapm_softc *viapm = (struct viapm_softc *)device_get_softc(dev);
|
|
int error;
|
|
|
|
viapm_clear(viapm);
|
|
if (viapm_busy(viapm))
|
|
return (EBUSY);
|
|
|
|
VIAPM_OUTB(SMBHADDR, slave & ~ LSB);
|
|
VIAPM_OUTB(SMBHCMD, cmd);
|
|
VIAPM_OUTB(SMBHDATA0, word & 0x00ff);
|
|
VIAPM_OUTB(SMBHDATA1, (word & 0xff00) >> 8);
|
|
|
|
VIAPM_OUTB(SMBHCTRL, SMBHCTRL_START | SMBHCTRL_WORD);
|
|
|
|
error = viapm_wait(viapm);
|
|
|
|
VIAPM_DEBUG(printf("viapm: WRITEW to 0x%x, cmd=0x%x, word=0x%x, error=0x%x\n", slave, cmd, word, error));
|
|
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
viasmb_readw(device_t dev, u_char slave, char cmd, short *word)
|
|
{
|
|
struct viapm_softc *viapm = (struct viapm_softc *)device_get_softc(dev);
|
|
int error;
|
|
u_char high, low;
|
|
|
|
viapm_clear(viapm);
|
|
if (viapm_busy(viapm))
|
|
return (EBUSY);
|
|
|
|
VIAPM_OUTB(SMBHADDR, slave | LSB);
|
|
VIAPM_OUTB(SMBHCMD, cmd);
|
|
|
|
VIAPM_OUTB(SMBHCTRL, SMBHCTRL_START | SMBHCTRL_WORD);
|
|
|
|
if ((error = viapm_wait(viapm)) == SMB_ENOERR) {
|
|
low = VIAPM_INB(SMBHDATA0);
|
|
high = VIAPM_INB(SMBHDATA1);
|
|
|
|
*word = ((high & 0xff) << 8) | (low & 0xff);
|
|
}
|
|
|
|
VIAPM_DEBUG(printf("viapm: READW from 0x%x, cmd=0x%x, word=0x%x, error=0x%x\n", slave, cmd, *word, error));
|
|
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
viasmb_bwrite(device_t dev, u_char slave, char cmd, u_char count, char *buf)
|
|
{
|
|
struct viapm_softc *viapm = (struct viapm_softc *)device_get_softc(dev);
|
|
u_char remain, len, i;
|
|
int error = SMB_ENOERR;
|
|
|
|
viapm_clear(viapm);
|
|
if (viapm_busy(viapm))
|
|
return (EBUSY);
|
|
|
|
remain = count;
|
|
while (remain) {
|
|
len = min(remain, 32);
|
|
|
|
VIAPM_OUTB(SMBHADDR, slave & ~LSB);
|
|
VIAPM_OUTB(SMBHCMD, cmd);
|
|
VIAPM_OUTB(SMBHDATA0, len);
|
|
i = VIAPM_INB(SMBHCTRL);
|
|
|
|
/* fill the 32-byte internal buffer */
|
|
for (i=0; i<len; i++) {
|
|
VIAPM_OUTB(SMBHBLOCK, buf[count-remain+i]);
|
|
DELAY(2);
|
|
}
|
|
VIAPM_OUTB(SMBHCMD, cmd);
|
|
VIAPM_OUTB(SMBHCTRL, SMBHCTRL_START | SMBHCTRL_BLOCK);
|
|
|
|
if ((error = viapm_wait(viapm)) != SMB_ENOERR)
|
|
goto error;
|
|
|
|
remain -= len;
|
|
}
|
|
|
|
error:
|
|
VIAPM_DEBUG(printf("viapm: WRITEBLK to 0x%x, count=0x%x, cmd=0x%x, error=0x%x", slave, count, cmd, error));
|
|
|
|
return (error);
|
|
|
|
}
|
|
|
|
static int
|
|
viasmb_bread(device_t dev, u_char slave, char cmd, u_char count, char *buf)
|
|
{
|
|
struct viapm_softc *viapm = (struct viapm_softc *)device_get_softc(dev);
|
|
u_char remain, len, i;
|
|
int error = SMB_ENOERR;
|
|
|
|
viapm_clear(viapm);
|
|
if (viapm_busy(viapm))
|
|
return (EBUSY);
|
|
|
|
remain = count;
|
|
while (remain) {
|
|
VIAPM_OUTB(SMBHADDR, slave | LSB);
|
|
VIAPM_OUTB(SMBHCMD, cmd);
|
|
VIAPM_OUTB(SMBHCTRL, SMBHCTRL_START | SMBHCTRL_BLOCK);
|
|
|
|
if ((error = viapm_wait(viapm)) != SMB_ENOERR)
|
|
goto error;
|
|
|
|
len = VIAPM_INB(SMBHDATA0);
|
|
i = VIAPM_INB(SMBHCTRL); /* reset counter */
|
|
|
|
len = min(len, remain);
|
|
|
|
/* read the 32-byte internal buffer */
|
|
for (i=0; i<len; i++) {
|
|
buf[count-remain+i] = VIAPM_INB(SMBHBLOCK);
|
|
DELAY(2);
|
|
}
|
|
|
|
remain -= len;
|
|
}
|
|
error:
|
|
VIAPM_DEBUG(printf("viapm: READBLK to 0x%x, count=0x%x, cmd=0x%x, error=0x%x", slave, count, cmd, error));
|
|
|
|
return (error);
|
|
}
|
|
|
|
static device_method_t viapm_methods[] = {
|
|
/* device interface */
|
|
DEVMETHOD(device_probe, viapm_586b_probe),
|
|
DEVMETHOD(device_attach, viapm_586b_attach),
|
|
DEVMETHOD(device_detach, viapm_586b_detach),
|
|
|
|
/* iicbb interface */
|
|
DEVMETHOD(iicbb_callback, viabb_callback),
|
|
DEVMETHOD(iicbb_setscl, viabb_setscl),
|
|
DEVMETHOD(iicbb_setsda, viabb_setsda),
|
|
DEVMETHOD(iicbb_getscl, viabb_getscl),
|
|
DEVMETHOD(iicbb_getsda, viabb_getsda),
|
|
DEVMETHOD(iicbb_reset, viabb_reset),
|
|
|
|
{ 0, 0 }
|
|
};
|
|
|
|
static driver_t viapm_driver = {
|
|
"viapm",
|
|
viapm_methods,
|
|
sizeof(struct viapm_softc),
|
|
};
|
|
|
|
static device_method_t viapropm_methods[] = {
|
|
/* device interface */
|
|
DEVMETHOD(device_probe, viapm_pro_probe),
|
|
DEVMETHOD(device_attach, viapm_pro_attach),
|
|
DEVMETHOD(device_detach, viapm_pro_detach),
|
|
|
|
/* smbus interface */
|
|
DEVMETHOD(smbus_callback, viasmb_callback),
|
|
DEVMETHOD(smbus_quick, viasmb_quick),
|
|
DEVMETHOD(smbus_sendb, viasmb_sendb),
|
|
DEVMETHOD(smbus_recvb, viasmb_recvb),
|
|
DEVMETHOD(smbus_writeb, viasmb_writeb),
|
|
DEVMETHOD(smbus_readb, viasmb_readb),
|
|
DEVMETHOD(smbus_writew, viasmb_writew),
|
|
DEVMETHOD(smbus_readw, viasmb_readw),
|
|
DEVMETHOD(smbus_bwrite, viasmb_bwrite),
|
|
DEVMETHOD(smbus_bread, viasmb_bread),
|
|
|
|
{ 0, 0 }
|
|
};
|
|
|
|
static driver_t viapropm_driver = {
|
|
"viapropm",
|
|
viapropm_methods,
|
|
sizeof(struct viapm_softc),
|
|
};
|
|
|
|
DRIVER_MODULE(viapm, pci, viapm_driver, viapm_devclass, 0, 0);
|
|
DRIVER_MODULE(viapropm, pci, viapropm_driver, viapropm_devclass, 0, 0);
|
|
|
|
MODULE_DEPEND(viapm, iicbb, IICBB_MINVER, IICBB_PREFVER, IICBB_MAXVER);
|
|
MODULE_DEPEND(viapropm, smbus, SMBUS_MINVER, SMBUS_PREFVER, SMBUS_MAXVER);
|
|
MODULE_VERSION(viapm, 1);
|