Date: Tue, 10 Jan 2012 08:41:10 +0000 (UTC) From: Fabien Thomas <fabient@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-8@freebsd.org Subject: svn commit: r229928 - in stable/8: share/man/man4 sys/amd64/conf sys/conf sys/dev/viawd sys/i386/conf sys/modules sys/modules/viawd Message-ID: <201201100841.q0A8fAH9098207@svn.freebsd.org>
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Author: fabient Date: Tue Jan 10 08:41:10 2012 New Revision: 229928 URL: http://svn.freebsd.org/changeset/base/229928 Log: MFC r228431, r228502, r228802: Add watchdog support for VIA south bridge chipset. Tested on VT8251, VX900 but CX700, VX800, VX855 should works. Added: stable/8/share/man/man4/viawd.4 - copied unchanged from r228431, head/share/man/man4/viawd.4 stable/8/sys/dev/viawd/ - copied from r228431, head/sys/dev/viawd/ stable/8/sys/modules/viawd/ - copied from r228431, head/sys/modules/viawd/ Modified: stable/8/share/man/man4/Makefile stable/8/sys/amd64/conf/NOTES stable/8/sys/conf/files.amd64 stable/8/sys/conf/files.i386 stable/8/sys/dev/viawd/viawd.c stable/8/sys/dev/viawd/viawd.h stable/8/sys/i386/conf/NOTES stable/8/sys/modules/Makefile Directory Properties: stable/8/share/man/man4/ (props changed) stable/8/sys/ (props changed) Modified: stable/8/share/man/man4/Makefile ============================================================================== --- stable/8/share/man/man4/Makefile Tue Jan 10 08:16:28 2012 (r229927) +++ stable/8/share/man/man4/Makefile Tue Jan 10 08:41:10 2012 (r229928) @@ -482,6 +482,7 @@ MAN= aac.4 \ vga.4 \ vge.4 \ viapm.4 \ + ${_viawd.4} \ vinum.4 \ vkbd.4 \ vlan.4 \ @@ -688,6 +689,7 @@ _speaker.4= speaker.4 _spkr.4= spkr.4 _tpm.4= tpm.4 _urtw.4= urtw.4 +_viawd.4= viawd.4 _wpi.4= wpi.4 _xen.4= xen.4 Copied: stable/8/share/man/man4/viawd.4 (from r228431, head/share/man/man4/viawd.4) ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ stable/8/share/man/man4/viawd.4 Tue Jan 10 08:41:10 2012 (r229928, copy of r228431, head/share/man/man4/viawd.4) @@ -0,0 +1,79 @@ +.\"- +.\" Copyright (c) 2011 Fabien Thomas <fabient@FreeBSD.org> +.\" All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS `AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON 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 ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" $FreeBSD$ +.\" +.Dd December 7, 2011 +.Dt VIAWD 4 +.Os +.Sh NAME +.Nm viawd +.Nd device driver for VIA south bridge watchdog timer +.Sh SYNOPSIS +To compile this driver into the kernel, +place the following line in your +kernel configuration file: +.Bd -ragged -offset indent +.Cd "device viawd" +.Ed +.Pp +Alternatively, to load the driver as a +module at boot time, place the following line in +.Xr loader.conf 5 : +.Bd -literal -offset indent +viawd_load="YES" +.Ed +.Sh DESCRIPTION +The +.Nm +driver provides +.Xr watchdog 4 +support for the watchdog interrupt timer present on +VIA south bridge chipset (VT8251, CX700, VX800, VX855, VX900). +.Pp +The VIA south bridge have a built-in watchdog timer, +which can be enabled and disabled by user's program and set between +1 to 1023 seconds. +.Pp +The +.Nm +driver when unloaded with running watchdog will reschedule the watchdog +to 5 minutes. +.Sh SEE ALSO +.Xr watchdog 4 , +.Xr watchdog 8 , +.Xr watchdogd 8 , +.Xr watchdog 9 +.Sh HISTORY +The +.Nm +driver first appeared in +.Fx 10.0 . +.Sh AUTHORS +.An -nosplit +The +.Nm +driver and this manual page were written by +.An Fabien Thomas Aq fabient@FreeBSD.org . Modified: stable/8/sys/amd64/conf/NOTES ============================================================================== --- stable/8/sys/amd64/conf/NOTES Tue Jan 10 08:16:28 2012 (r229927) +++ stable/8/sys/amd64/conf/NOTES Tue Jan 10 08:41:10 2012 (r229928) @@ -459,6 +459,7 @@ device tpm # device ichwd device amdsbwd +device viawd # # Temperature sensors: Modified: stable/8/sys/conf/files.amd64 ============================================================================== --- stable/8/sys/conf/files.amd64 Tue Jan 10 08:16:28 2012 (r229927) +++ stable/8/sys/conf/files.amd64 Tue Jan 10 08:41:10 2012 (r229928) @@ -231,6 +231,7 @@ dev/tpm/tpm.c optional tpm dev/tpm/tpm_acpi.c optional tpm acpi dev/tpm/tpm_isa.c optional tpm isa dev/uart/uart_cpu_amd64.c optional uart +dev/viawd/viawd.c optional viawd dev/wpi/if_wpi.c optional wpi isa/syscons_isa.c optional sc isa/vga_isa.c optional vga Modified: stable/8/sys/conf/files.i386 ============================================================================== --- stable/8/sys/conf/files.i386 Tue Jan 10 08:16:28 2012 (r229927) +++ stable/8/sys/conf/files.i386 Tue Jan 10 08:41:10 2012 (r229928) @@ -236,6 +236,7 @@ dev/tpm/tpm.c optional tpm dev/tpm/tpm_acpi.c optional tpm acpi dev/tpm/tpm_isa.c optional tpm isa dev/uart/uart_cpu_i386.c optional uart +dev/viawd/viawd.c optional viawd dev/acpica/acpi_if.m standard dev/acpi_support/acpi_wmi_if.m standard dev/wpi/if_wpi.c optional wpi Modified: stable/8/sys/dev/viawd/viawd.c ============================================================================== --- head/sys/dev/viawd/viawd.c Mon Dec 12 09:50:33 2011 (r228431) +++ stable/8/sys/dev/viawd/viawd.c Tue Jan 10 08:41:10 2012 (r229928) @@ -1,5 +1,5 @@ /*- - * Copyright (c) 2011 Fabien Thomas <fthomas@FreeBSD.org> + * Copyright (c) 2011 Fabien Thomas <fabient@FreeBSD.org> * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -42,10 +42,9 @@ __FBSDID("$FreeBSD$"); #include "viawd.h" -#define viawd_read_wd_4(sc, off) \ - bus_space_read_4((sc)->wd_bst, (sc)->wd_bsh, (off)) -#define viawd_write_wd_4(sc, off, val) \ - bus_space_write_4((sc)->wd_bst, (sc)->wd_bsh, (off), (val)) +#define viawd_read_4(sc, off) bus_read_4((sc)->wd_res, (off)) +#define viawd_write_4(sc, off, val) \ + bus_write_4((sc)->wd_res, (off), (val)) static struct viawd_device viawd_devices[] = { { DEVICEID_VT8251, "VIA VT8251 watchdog timer" }, @@ -58,37 +57,17 @@ static struct viawd_device viawd_devices static devclass_t viawd_devclass; -static device_t -viawd_find(struct viawd_device **id_p) -{ - struct viawd_device *id; - device_t sb_dev = NULL; - - /* Look for a supported VIA south bridge. */ - for (id = viawd_devices; id->desc != NULL; ++id) - if ((sb_dev = pci_find_device(VENDORID_VIA, id->device)) != NULL) - break; - - if (sb_dev == NULL) - return (NULL); - - if (id_p != NULL) - *id_p = id; - - return (sb_dev); -} - static void viawd_tmr_state(struct viawd_softc *sc, int enable) { uint32_t reg; - reg = viawd_read_wd_4(sc, VIAWD_MEM_CTRL); + reg = viawd_read_4(sc, VIAWD_MEM_CTRL); if (enable) reg |= VIAWD_MEM_CTRL_TRIGGER | VIAWD_MEM_CTRL_ENABLE; else reg &= ~VIAWD_MEM_CTRL_ENABLE; - viawd_write_wd_4(sc, VIAWD_MEM_CTRL, reg); + viawd_write_4(sc, VIAWD_MEM_CTRL, reg); } static void @@ -101,7 +80,7 @@ viawd_tmr_set(struct viawd_softc *sc, un else if (timeout > VIAWD_MEM_COUNT_MAX) timeout = VIAWD_MEM_COUNT_MAX; - viawd_write_wd_4(sc, VIAWD_MEM_COUNT, timeout); + viawd_write_4(sc, VIAWD_MEM_COUNT, timeout); sc->timeout = timeout; } @@ -127,35 +106,40 @@ viawd_event(void *arg, unsigned int cmd, viawd_tmr_state(sc, 0); } -static void -viawd_identify(driver_t *driver, device_t parent) +/* Look for a supported VIA south bridge. */ +static struct viawd_device * +viawd_find(device_t dev) { - device_t dev; - device_t sb_dev; - struct viawd_device *id_p; + struct viawd_device *id; - sb_dev = viawd_find(&id_p); - if (sb_dev == NULL) - return; + if (pci_get_vendor(dev) != VENDORID_VIA) + return (NULL); + for (id = viawd_devices; id->desc != NULL; id++) + if (pci_get_device(dev) == id->device) + return (id); + return (NULL); +} - /* Good, add child to bus. */ - if ((dev = device_find_child(parent, driver->name, 0)) == NULL) - dev = BUS_ADD_CHILD(parent, 0, driver->name, 0); +static void +viawd_identify(driver_t *driver, device_t parent) +{ - if (dev == NULL) + if (viawd_find(parent) == NULL) return; - device_set_desc_copy(dev, id_p->desc); + if (device_find_child(parent, driver->name, -1) == NULL) + BUS_ADD_CHILD(parent, 0, driver->name, 0); } static int viawd_probe(device_t dev) { + struct viawd_device *id; - /* Do not claim some ISA PnP device by accident. */ - if (isa_get_logicalid(dev) != 0) - return (ENXIO); - return (0); + id = viawd_find(device_get_parent(dev)); + KASSERT(id != NULL, ("parent should be a valid VIA SB")); + device_set_desc(dev, id->desc); + return (BUS_PROBE_GENERIC); } static int @@ -163,13 +147,12 @@ viawd_attach(device_t dev) { device_t sb_dev; struct viawd_softc *sc; - struct viawd_device *id_p; uint32_t pmbase, reg; sc = device_get_softc(dev); sc->dev = dev; - sb_dev = viawd_find(&id_p); + sb_dev = device_get_parent(dev); if (sb_dev == NULL) { device_printf(dev, "Can not find watchdog device.\n"); goto fail; @@ -193,16 +176,14 @@ viawd_attach(device_t dev) device_printf(dev, "Unable to map watchdog memory\n"); goto fail; } - sc->wd_bst = rman_get_bustag(sc->wd_res); - sc->wd_bsh = rman_get_bushandle(sc->wd_res); /* Check if watchdog fired last boot. */ - reg = viawd_read_wd_4(sc, VIAWD_MEM_CTRL); + reg = viawd_read_4(sc, VIAWD_MEM_CTRL); if (reg & VIAWD_MEM_CTRL_FIRED) { device_printf(dev, "ERROR: watchdog rebooted the system\n"); /* Reset bit state. */ - viawd_write_wd_4(sc, VIAWD_MEM_CTRL, reg); + viawd_write_4(sc, VIAWD_MEM_CTRL, reg); } /* Register the watchdog event handler. */ @@ -233,7 +214,7 @@ viawd_detach(device_t dev) * Do not stop the watchdog on shutdown if active but bump the * timer to avoid spurious reset. */ - reg = viawd_read_wd_4(sc, VIAWD_MEM_CTRL); + reg = viawd_read_4(sc, VIAWD_MEM_CTRL); if (reg & VIAWD_MEM_CTRL_ENABLE) { viawd_tmr_set(sc, VIAWD_TIMEOUT_SHUTDOWN); viawd_tmr_state(sc, 1); @@ -264,23 +245,4 @@ static driver_t viawd_driver = { sizeof(struct viawd_softc), }; -static int -viawd_modevent(module_t mode, int type, void *data) -{ - int error = 0; - - switch (type) { - case MOD_LOAD: - printf("viawd module loaded\n"); - break; - case MOD_UNLOAD: - printf("viawd module unloaded\n"); - break; - case MOD_SHUTDOWN: - printf("viawd module shutting down\n"); - break; - } - return (error); -} - -DRIVER_MODULE(viawd, isa, viawd_driver, viawd_devclass, viawd_modevent, NULL); +DRIVER_MODULE(viawd, isab, viawd_driver, viawd_devclass, NULL, NULL); Modified: stable/8/sys/dev/viawd/viawd.h ============================================================================== --- head/sys/dev/viawd/viawd.h Mon Dec 12 09:50:33 2011 (r228431) +++ stable/8/sys/dev/viawd/viawd.h Tue Jan 10 08:41:10 2012 (r229928) @@ -1,5 +1,5 @@ /*- - * Copyright (c) 2011 Fabien Thomas <fthomas@FreeBSD.org> + * Copyright (c) 2011 Fabien Thomas <fabient@FreeBSD.org> * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -40,8 +40,6 @@ struct viawd_softc { int wd_rid; struct resource *wd_res; - bus_space_tag_t wd_bst; - bus_space_handle_t wd_bsh; eventhandler_tag ev_tag; unsigned int timeout; Modified: stable/8/sys/i386/conf/NOTES ============================================================================== --- stable/8/sys/i386/conf/NOTES Tue Jan 10 08:16:28 2012 (r229927) +++ stable/8/sys/i386/conf/NOTES Tue Jan 10 08:41:10 2012 (r229928) @@ -844,6 +844,7 @@ hint.pcf.0.irq="5" # device ichwd device amdsbwd +device viawd # # Temperature sensors: Modified: stable/8/sys/modules/Makefile ============================================================================== --- stable/8/sys/modules/Makefile Tue Jan 10 08:16:28 2012 (r229927) +++ stable/8/sys/modules/Makefile Tue Jan 10 08:41:10 2012 (r229928) @@ -306,6 +306,7 @@ SUBDIR= ${_3dfx} \ utopia \ ${_vesa} \ vge \ + ${_viawd} \ vkbd \ ${_vpo} \ vr \ @@ -503,6 +504,7 @@ _nve= nve _nvram= nvram _nxge= nxge _tpm= tpm +_viawd= viawd _wpi= wpi _wpifw= wpifw .if ${MK_CRYPT} != "no" || defined(ALL_MODULES) @@ -602,6 +604,7 @@ _tmpfs= tmpfs _tpm= tpm _twa= twa _vesa= vesa +_viawd= viawd _x86bios= x86bios _wi= wi _wpi= wpi
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