/*- * Copyright (c) 2000 Doug Rabson * 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: src/sys/dev/agp/agp_via.c,v 1.26 2007/11/12 21:51:37 jhb Exp $ * $DragonFly: src/sys/dev/agp/agp_via.c,v 1.8 2008/01/07 01:34:58 corecode Exp $ */ #include "opt_bus.h" #include #include #include #include #include #include #include #include #include "agppriv.h" #include "agpreg.h" #include #include #include #define REG_GARTCTRL 0 #define REG_APSIZE 1 #define REG_ATTBASE 2 struct agp_via_softc { struct agp_softc agp; u_int32_t initial_aperture; /* aperture size at startup */ struct agp_gatt *gatt; int *regs; }; static int via_v2_regs[] = { AGP_VIA_GARTCTRL, AGP_VIA_APSIZE, AGP_VIA_ATTBASE }; static int via_v3_regs[] = { AGP3_VIA_GARTCTRL, AGP3_VIA_APSIZE, AGP3_VIA_ATTBASE }; static const char* agp_via_match(device_t dev) { if (pci_get_class(dev) != PCIC_BRIDGE || pci_get_subclass(dev) != PCIS_BRIDGE_HOST) return NULL; if (agp_find_caps(dev) == 0) return NULL; switch (pci_get_devid(dev)) { case 0x01981106: return ("VIA 8763 (P4X600) host to PCI bridge"); case 0x02591106: return ("VIA PM800/PN800/PM880/PN880 host to PCI bridge"); case 0x02691106: return ("VIA KT880 host to PCI bridge"); case 0x02961106: return ("VIA 3296 (P4M800) host to PCI bridge"); case 0x03051106: return ("VIA 82C8363 (Apollo KT133x/KM133) host to PCI bridge"); case 0x03911106: return ("VIA 8371 (Apollo KX133) host to PCI bridge"); case 0x05011106: return ("VIA 8501 (Apollo MVP4) host to PCI bridge"); case 0x05971106: return ("VIA 82C597 (Apollo VP3) host to PCI bridge"); case 0x05981106: return ("VIA 82C598 (Apollo MVP3) host to PCI bridge"); case 0x06011106: return ("VIA 8601 (Apollo ProMedia/PLE133Ta) host to PCI bridge"); case 0x06051106: return ("VIA 82C694X (Apollo Pro 133A) host to PCI bridge"); case 0x06911106: return ("VIA 82C691 (Apollo Pro) host to PCI bridge"); case 0x30911106: return ("VIA 8633 (Pro 266) host to PCI bridge"); case 0x30991106: return ("VIA 8367 (KT266/KY266x/KT333) host to PCI bridge"); case 0x31011106: return ("VIA 8653 (Pro266T) host to PCI bridge"); case 0x31121106: return ("VIA 8361 (KLE133) host to PCI bridge"); case 0x31161106: return ("VIA XM266 (PM266/KM266) host to PCI bridge"); case 0x31231106: return ("VIA 862x (CLE266) host to PCI bridge"); case 0x31281106: return ("VIA 8753 (P4X266) host to PCI bridge"); case 0x31481106: return ("VIA 8703 (P4M266x/P4N266) host to PCI bridge"); case 0x31561106: return ("VIA XN266 (Apollo Pro266) host to PCI bridge"); case 0x31681106: return ("VIA 8754 (PT800) host to PCI bridge"); case 0x31891106: return ("VIA 8377 (Apollo KT400/KT400A/KT600) host to PCI bridge"); case 0x32051106: return ("VIA 8235/8237 (Apollo KM400/KM400A) host to PCI bridge"); case 0x32081106: return ("VIA 8783 (PT890) host to PCI bridge"); case 0x32581106: return ("VIA PT880 host to PCI bridge"); case 0xb1981106: return ("VIA VT83xx/VT87xx/KTxxx/Px8xx host to PCI bridge"); }; return NULL; } static int agp_via_probe(device_t dev) { const char *desc; if (resource_disabled("agp", device_get_unit(dev))) return (ENXIO); desc = agp_via_match(dev); if (desc) { device_verbose(dev); device_set_desc(dev, desc); return BUS_PROBE_DEFAULT; } return ENXIO; } static int agp_via_attach(device_t dev) { struct agp_via_softc *sc = device_get_softc(dev); struct agp_gatt *gatt; int error; u_int32_t agpsel; /* XXX: This should be keying off of whether the bridge is AGP3 capable, * rather than a bunch of device ids for chipsets that happen to do 8x. */ switch (pci_get_devid(dev)) { case 0x01981106: case 0x02591106: case 0x02691106: case 0x02961106: case 0x31231106: case 0x31681106: case 0x31891106: case 0x32051106: case 0x32581106: case 0xb1981106: /* The newer VIA chipsets will select the AGP version based on * what AGP versions the card supports. We still have to * program it using the v2 registers if it has chosen to use * compatibility mode. */ agpsel = pci_read_config(dev, AGP_VIA_AGPSEL, 1); if ((agpsel & (1 << 1)) == 0) sc->regs = via_v3_regs; else sc->regs = via_v2_regs; break; default: sc->regs = via_v2_regs; break; } error = agp_generic_attach(dev); if (error) return error; sc->initial_aperture = AGP_GET_APERTURE(dev); if (sc->initial_aperture == 0) { device_printf(dev, "bad initial aperture size, disabling\n"); return ENXIO; } for (;;) { gatt = agp_alloc_gatt(dev); if (gatt) break; /* * Probably contigmalloc failure. Try reducing the * aperture so that the gatt size reduces. */ if (AGP_SET_APERTURE(dev, AGP_GET_APERTURE(dev) / 2)) { agp_generic_detach(dev); return ENOMEM; } } sc->gatt = gatt; if (sc->regs == via_v2_regs) { /* Install the gatt. */ pci_write_config(dev, sc->regs[REG_ATTBASE], gatt->ag_physical | 3, 4); /* Enable the aperture. */ pci_write_config(dev, sc->regs[REG_GARTCTRL], 0x0f, 4); } else { u_int32_t gartctrl; /* Install the gatt. */ pci_write_config(dev, sc->regs[REG_ATTBASE], gatt->ag_physical, 4); /* Enable the aperture. */ gartctrl = pci_read_config(dev, sc->regs[REG_ATTBASE], 4); pci_write_config(dev, sc->regs[REG_GARTCTRL], gartctrl | (3 << 7), 4); } return 0; } static int agp_via_detach(device_t dev) { struct agp_via_softc *sc = device_get_softc(dev); agp_free_cdev(dev); pci_write_config(dev, sc->regs[REG_GARTCTRL], 0, 4); pci_write_config(dev, sc->regs[REG_ATTBASE], 0, 4); AGP_SET_APERTURE(dev, sc->initial_aperture); agp_free_gatt(sc->gatt); agp_free_res(dev); return 0; } static u_int32_t agp_via_get_aperture(device_t dev) { struct agp_via_softc *sc = device_get_softc(dev); u_int32_t apsize; apsize = pci_read_config(dev, sc->regs[REG_APSIZE], 1) & 0x1f; /* * The size is determined by the number of low bits of * register APBASE which are forced to zero. The low 20 bits * are always forced to zero and each zero bit in the apsize * field just read forces the corresponding bit in the 27:20 * to be zero. We calculate the aperture size accordingly. */ return (((apsize ^ 0xff) << 20) | ((1 << 20) - 1)) + 1; } static int agp_via_set_aperture(device_t dev, u_int32_t aperture) { struct agp_via_softc *sc = device_get_softc(dev); u_int32_t apsize; /* * Reverse the magic from get_aperture. */ apsize = ((aperture - 1) >> 20) ^ 0xff; /* * Double check for sanity. */ if ((((apsize ^ 0xff) << 20) | ((1 << 20) - 1)) + 1 != aperture) return EINVAL; pci_write_config(dev, sc->regs[REG_APSIZE], apsize, 1); return 0; } static int agp_via_bind_page(device_t dev, int offset, vm_offset_t physical) { struct agp_via_softc *sc = device_get_softc(dev); if (offset < 0 || offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT)) return EINVAL; sc->gatt->ag_virtual[offset >> AGP_PAGE_SHIFT] = physical; return 0; } static int agp_via_unbind_page(device_t dev, int offset) { struct agp_via_softc *sc = device_get_softc(dev); if (offset < 0 || offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT)) return EINVAL; sc->gatt->ag_virtual[offset >> AGP_PAGE_SHIFT] = 0; return 0; } static void agp_via_flush_tlb(device_t dev) { struct agp_via_softc *sc = device_get_softc(dev); u_int32_t gartctrl; if (sc->regs == via_v2_regs) { pci_write_config(dev, sc->regs[REG_GARTCTRL], 0x8f, 4); pci_write_config(dev, sc->regs[REG_GARTCTRL], 0x0f, 4); } else { gartctrl = pci_read_config(dev, sc->regs[REG_GARTCTRL], 4); pci_write_config(dev, sc->regs[REG_GARTCTRL], gartctrl & ~(1 << 7), 4); pci_write_config(dev, sc->regs[REG_GARTCTRL], gartctrl, 4); } } static device_method_t agp_via_methods[] = { /* Device interface */ DEVMETHOD(device_probe, agp_via_probe), DEVMETHOD(device_attach, agp_via_attach), DEVMETHOD(device_detach, agp_via_detach), DEVMETHOD(device_shutdown, bus_generic_shutdown), DEVMETHOD(device_suspend, bus_generic_suspend), DEVMETHOD(device_resume, bus_generic_resume), /* AGP interface */ DEVMETHOD(agp_get_aperture, agp_via_get_aperture), DEVMETHOD(agp_set_aperture, agp_via_set_aperture), DEVMETHOD(agp_bind_page, agp_via_bind_page), DEVMETHOD(agp_unbind_page, agp_via_unbind_page), DEVMETHOD(agp_flush_tlb, agp_via_flush_tlb), DEVMETHOD(agp_enable, agp_generic_enable), DEVMETHOD(agp_alloc_memory, agp_generic_alloc_memory), DEVMETHOD(agp_free_memory, agp_generic_free_memory), DEVMETHOD(agp_bind_memory, agp_generic_bind_memory), DEVMETHOD(agp_unbind_memory, agp_generic_unbind_memory), { 0, 0 } }; static driver_t agp_via_driver = { "agp", agp_via_methods, sizeof(struct agp_via_softc), }; static devclass_t agp_devclass; DRIVER_MODULE(agp_via, pci, agp_via_driver, agp_devclass, 0, 0); MODULE_DEPEND(agp_via, agp, 1, 1, 1); MODULE_DEPEND(agp_via, pci, 1, 1, 1);