agp_via.c revision 173203
161452Sdfr/*- 261452Sdfr * Copyright (c) 2000 Doug Rabson 361452Sdfr * All rights reserved. 461452Sdfr * 561452Sdfr * Redistribution and use in source and binary forms, with or without 661452Sdfr * modification, are permitted provided that the following conditions 761452Sdfr * are met: 861452Sdfr * 1. Redistributions of source code must retain the above copyright 961452Sdfr * notice, this list of conditions and the following disclaimer. 1061452Sdfr * 2. Redistributions in binary form must reproduce the above copyright 1161452Sdfr * notice, this list of conditions and the following disclaimer in the 1261452Sdfr * documentation and/or other materials provided with the distribution. 1361452Sdfr * 1461452Sdfr * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 1561452Sdfr * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1661452Sdfr * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 1761452Sdfr * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 1861452Sdfr * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 1961452Sdfr * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2061452Sdfr * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2161452Sdfr * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2261452Sdfr * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2361452Sdfr * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2461452Sdfr * SUCH DAMAGE. 2561452Sdfr */ 2661452Sdfr 27116192Sobrien#include <sys/cdefs.h> 28116192Sobrien__FBSDID("$FreeBSD: head/sys/dev/agp/agp_via.c 173203 2007-10-30 22:09:16Z jhb $"); 29116192Sobrien 3061452Sdfr#include "opt_bus.h" 3161452Sdfr 3261452Sdfr#include <sys/param.h> 3361452Sdfr#include <sys/systm.h> 3461452Sdfr#include <sys/malloc.h> 3561452Sdfr#include <sys/kernel.h> 36129878Sphk#include <sys/module.h> 3761452Sdfr#include <sys/bus.h> 3861452Sdfr#include <sys/lock.h> 3976827Salfred#include <sys/mutex.h> 4079339Sjhb#include <sys/proc.h> 4161452Sdfr 42119288Simp#include <dev/pci/pcivar.h> 43119288Simp#include <dev/pci/pcireg.h> 4461452Sdfr#include <pci/agppriv.h> 4561452Sdfr#include <pci/agpreg.h> 4661452Sdfr 4761452Sdfr#include <vm/vm.h> 4861452Sdfr#include <vm/vm_object.h> 4961452Sdfr#include <vm/pmap.h> 5061452Sdfr 51129189Sjhb#define REG_GARTCTRL 0 52129189Sjhb#define REG_APSIZE 1 53129189Sjhb#define REG_ATTBASE 2 54129189Sjhb 5561452Sdfrstruct agp_via_softc { 5661452Sdfr struct agp_softc agp; 5761452Sdfr u_int32_t initial_aperture; /* aperture size at startup */ 5861452Sdfr struct agp_gatt *gatt; 59129189Sjhb int *regs; 6061452Sdfr}; 6161452Sdfr 62129189Sjhbstatic int via_v2_regs[] = { AGP_VIA_GARTCTRL, AGP_VIA_APSIZE, 63129189Sjhb AGP_VIA_ATTBASE }; 64129189Sjhbstatic int via_v3_regs[] = { AGP3_VIA_GARTCTRL, AGP3_VIA_APSIZE, 65129189Sjhb AGP3_VIA_ATTBASE }; 66129189Sjhb 6761452Sdfrstatic const char* 6861452Sdfragp_via_match(device_t dev) 6961452Sdfr{ 7061452Sdfr if (pci_get_class(dev) != PCIC_BRIDGE 7161452Sdfr || pci_get_subclass(dev) != PCIS_BRIDGE_HOST) 7261452Sdfr return NULL; 7361452Sdfr 7461452Sdfr if (agp_find_caps(dev) == 0) 7561452Sdfr return NULL; 7661452Sdfr 7761452Sdfr switch (pci_get_devid(dev)) { 78139431Sanholt case 0x01981106: 79139431Sanholt return ("VIA 8763 (P4X600) host to PCI bridge"); 80139431Sanholt case 0x02591106: 81139431Sanholt return ("VIA PM800/PN800/PM880/PN880 host to PCI bridge"); 82139431Sanholt case 0x02691106: 83139431Sanholt return ("VIA KT880 host to PCI bridge"); 84139431Sanholt case 0x02961106: 85139431Sanholt return ("VIA 3296 (P4M800) host to PCI bridge"); 86116921Sjhb case 0x03051106: 87139431Sanholt return ("VIA 82C8363 (Apollo KT133x/KM133) host to PCI bridge"); 88172262Skevlo case 0x03241106: 89172262Skevlo return ("VIA VT3324 (CX700) host to PCI bridge"); 90139431Sanholt case 0x03911106: 91139431Sanholt return ("VIA 8371 (Apollo KX133) host to PCI bridge"); 9261452Sdfr case 0x05011106: 9361452Sdfr return ("VIA 8501 (Apollo MVP4) host to PCI bridge"); 9461452Sdfr case 0x05971106: 9561452Sdfr return ("VIA 82C597 (Apollo VP3) host to PCI bridge"); 9661452Sdfr case 0x05981106: 9761452Sdfr return ("VIA 82C598 (Apollo MVP3) host to PCI bridge"); 98139431Sanholt case 0x06011106: 99139431Sanholt return ("VIA 8601 (Apollo ProMedia/PLE133Ta) host to PCI bridge"); 100116921Sjhb case 0x06051106: 101116921Sjhb return ("VIA 82C694X (Apollo Pro 133A) host to PCI bridge"); 10261452Sdfr case 0x06911106: 10361452Sdfr return ("VIA 82C691 (Apollo Pro) host to PCI bridge"); 104139431Sanholt case 0x30911106: 105139431Sanholt return ("VIA 8633 (Pro 266) host to PCI bridge"); 106139431Sanholt case 0x30991106: 107139431Sanholt return ("VIA 8367 (KT266/KY266x/KT333) host to PCI bridge"); 108139431Sanholt case 0x31011106: 109139431Sanholt return ("VIA 8653 (Pro266T) host to PCI bridge"); 110139431Sanholt case 0x31121106: 111139431Sanholt return ("VIA 8361 (KLE133) host to PCI bridge"); 112139431Sanholt case 0x31161106: 113139431Sanholt return ("VIA XM266 (PM266/KM266) host to PCI bridge"); 114139431Sanholt case 0x31231106: 115139431Sanholt return ("VIA 862x (CLE266) host to PCI bridge"); 116139431Sanholt case 0x31281106: 117139431Sanholt return ("VIA 8753 (P4X266) host to PCI bridge"); 118139431Sanholt case 0x31481106: 119139431Sanholt return ("VIA 8703 (P4M266x/P4N266) host to PCI bridge"); 120139431Sanholt case 0x31561106: 121139431Sanholt return ("VIA XN266 (Apollo Pro266) host to PCI bridge"); 122139431Sanholt case 0x31681106: 123139431Sanholt return ("VIA 8754 (PT800) host to PCI bridge"); 124131433Sjhb case 0x31891106: 125131433Sjhb return ("VIA 8377 (Apollo KT400/KT400A/KT600) host to PCI bridge"); 126139431Sanholt case 0x32051106: 127139431Sanholt return ("VIA 8235/8237 (Apollo KM400/KM400A) host to PCI bridge"); 128139431Sanholt case 0x32081106: 129139431Sanholt return ("VIA 8783 (PT890) host to PCI bridge"); 130139431Sanholt case 0x32581106: 131139431Sanholt return ("VIA PT880 host to PCI bridge"); 132139431Sanholt case 0xb1981106: 133139431Sanholt return ("VIA VT83xx/VT87xx/KTxxx/Px8xx host to PCI bridge"); 13461452Sdfr }; 13561452Sdfr 13661452Sdfr return NULL; 13761452Sdfr} 13861452Sdfr 13961452Sdfrstatic int 14061452Sdfragp_via_probe(device_t dev) 14161452Sdfr{ 14261452Sdfr const char *desc; 14361452Sdfr 144127815Snjl if (resource_disabled("agp", device_get_unit(dev))) 145127815Snjl return (ENXIO); 14661452Sdfr desc = agp_via_match(dev); 14761452Sdfr if (desc) { 14861452Sdfr device_set_desc(dev, desc); 149142398Simp return BUS_PROBE_DEFAULT; 15061452Sdfr } 15161452Sdfr 15261452Sdfr return ENXIO; 15361452Sdfr} 15461452Sdfr 15561452Sdfrstatic int 15661452Sdfragp_via_attach(device_t dev) 15761452Sdfr{ 15861452Sdfr struct agp_via_softc *sc = device_get_softc(dev); 15961452Sdfr struct agp_gatt *gatt; 16061452Sdfr int error; 161133406Sanholt u_int32_t agpsel; 16261452Sdfr 163139431Sanholt /* XXX: This should be keying off of whether the bridge is AGP3 capable, 164139431Sanholt * rather than a bunch of device ids for chipsets that happen to do 8x. 165139431Sanholt */ 166129189Sjhb switch (pci_get_devid(dev)) { 167139431Sanholt case 0x01981106: 168139431Sanholt case 0x02591106: 169139431Sanholt case 0x02691106: 170139431Sanholt case 0x02961106: 171172262Skevlo case 0x03241106: 172139431Sanholt case 0x31231106: 173139431Sanholt case 0x31681106: 174131433Sjhb case 0x31891106: 175139431Sanholt case 0x32051106: 176139431Sanholt case 0x32581106: 177139431Sanholt case 0xb1981106: 178133406Sanholt /* The newer VIA chipsets will select the AGP version based on 179133406Sanholt * what AGP versions the card supports. We still have to 180133406Sanholt * program it using the v2 registers if it has chosen to use 181133406Sanholt * compatibility mode. 182133406Sanholt */ 183133406Sanholt agpsel = pci_read_config(dev, AGP_VIA_AGPSEL, 1); 184133406Sanholt if ((agpsel & (1 << 1)) == 0) 185133406Sanholt sc->regs = via_v3_regs; 186133406Sanholt else 187133406Sanholt sc->regs = via_v2_regs; 188129189Sjhb break; 189129189Sjhb default: 190129189Sjhb sc->regs = via_v2_regs; 191129189Sjhb break; 192129189Sjhb } 193129189Sjhb 19461452Sdfr error = agp_generic_attach(dev); 19561452Sdfr if (error) 19661452Sdfr return error; 19761452Sdfr 19861452Sdfr sc->initial_aperture = AGP_GET_APERTURE(dev); 19961452Sdfr 20061452Sdfr for (;;) { 20161452Sdfr gatt = agp_alloc_gatt(dev); 20261452Sdfr if (gatt) 20361452Sdfr break; 20461452Sdfr 20561452Sdfr /* 20661452Sdfr * Probably contigmalloc failure. Try reducing the 20761452Sdfr * aperture so that the gatt size reduces. 20861452Sdfr */ 20961452Sdfr if (AGP_SET_APERTURE(dev, AGP_GET_APERTURE(dev) / 2)) { 21061452Sdfr agp_generic_detach(dev); 21161452Sdfr return ENOMEM; 21261452Sdfr } 21361452Sdfr } 21461452Sdfr sc->gatt = gatt; 21561452Sdfr 216147606Sanholt if (sc->regs == via_v2_regs) { 217147606Sanholt /* Install the gatt. */ 218147606Sanholt pci_write_config(dev, sc->regs[REG_ATTBASE], gatt->ag_physical | 3, 4); 219147606Sanholt 220147606Sanholt /* Enable the aperture. */ 221147606Sanholt pci_write_config(dev, sc->regs[REG_GARTCTRL], 0x0f, 4); 222147606Sanholt } else { 223147606Sanholt u_int32_t gartctrl; 22461452Sdfr 225147606Sanholt /* Install the gatt. */ 226147606Sanholt pci_write_config(dev, sc->regs[REG_ATTBASE], gatt->ag_physical, 4); 227147606Sanholt 228147606Sanholt /* Enable the aperture. */ 229147606Sanholt gartctrl = pci_read_config(dev, sc->regs[REG_ATTBASE], 4); 230147606Sanholt pci_write_config(dev, sc->regs[REG_GARTCTRL], gartctrl | (3 << 7), 4); 231147606Sanholt } 232147606Sanholt 233172262Skevlo device_printf(dev, "aperture size is %dM\n", 234172262Skevlo sc->initial_aperture / 1024 / 1024); 235172262Skevlo 23661452Sdfr return 0; 23761452Sdfr} 23861452Sdfr 23961452Sdfrstatic int 24061452Sdfragp_via_detach(device_t dev) 24161452Sdfr{ 24261452Sdfr struct agp_via_softc *sc = device_get_softc(dev); 24361452Sdfr 244173203Sjhb agp_free_cdev(dev); 24561452Sdfr 246129189Sjhb pci_write_config(dev, sc->regs[REG_GARTCTRL], 0, 4); 247129189Sjhb pci_write_config(dev, sc->regs[REG_ATTBASE], 0, 4); 24861452Sdfr AGP_SET_APERTURE(dev, sc->initial_aperture); 24961452Sdfr agp_free_gatt(sc->gatt); 250173203Sjhb agp_free_res(dev); 25161452Sdfr 25261452Sdfr return 0; 25361452Sdfr} 25461452Sdfr 25561452Sdfrstatic u_int32_t 25661452Sdfragp_via_get_aperture(device_t dev) 25761452Sdfr{ 258129189Sjhb struct agp_via_softc *sc = device_get_softc(dev); 25961452Sdfr u_int32_t apsize; 26061452Sdfr 261172262Skevlo if (sc->regs == via_v2_regs) { 262172262Skevlo apsize = pci_read_config(dev, sc->regs[REG_APSIZE], 1) & 0x1f; 26361452Sdfr 264172262Skevlo /* 265172262Skevlo * The size is determined by the number of low bits of 266172262Skevlo * register APBASE which are forced to zero. The low 20 bits 267172262Skevlo * are always forced to zero and each zero bit in the apsize 268172262Skevlo * field just read forces the corresponding bit in the 27:20 269172262Skevlo * to be zero. We calculate the aperture size accordingly. 270172262Skevlo */ 271172262Skevlo return (((apsize ^ 0xff) << 20) | ((1 << 20) - 1)) + 1; 272172262Skevlo } else { 273172262Skevlo apsize = pci_read_config(dev, sc->regs[REG_APSIZE], 2) & 0xfff; 274172262Skevlo switch (apsize) { 275172262Skevlo case 0x800: 276172262Skevlo return 0x80000000; 277172262Skevlo case 0xc00: 278172262Skevlo return 0x40000000; 279172262Skevlo case 0xe00: 280172262Skevlo return 0x20000000; 281172262Skevlo case 0xf00: 282172262Skevlo return 0x10000000; 283172262Skevlo case 0xf20: 284172262Skevlo return 0x08000000; 285172262Skevlo case 0xf30: 286172262Skevlo return 0x04000000; 287172262Skevlo case 0xf38: 288172262Skevlo return 0x02000000; 289172262Skevlo default: 290172262Skevlo device_printf(dev, "Invalid aperture setting 0x%x", 291172262Skevlo pci_read_config(dev, sc->regs[REG_APSIZE], 2)); 292172262Skevlo return 0; 293172262Skevlo } 294172262Skevlo } 29561452Sdfr} 29661452Sdfr 29761452Sdfrstatic int 29861452Sdfragp_via_set_aperture(device_t dev, u_int32_t aperture) 29961452Sdfr{ 300129189Sjhb struct agp_via_softc *sc = device_get_softc(dev); 301172262Skevlo u_int32_t apsize, key, val; 30261452Sdfr 303172262Skevlo if (sc->regs == via_v2_regs) { 304172262Skevlo /* 305172262Skevlo * Reverse the magic from get_aperture. 306172262Skevlo */ 307172262Skevlo apsize = ((aperture - 1) >> 20) ^ 0xff; 30861452Sdfr 309172262Skevlo /* 310172262Skevlo * Double check for sanity. 311172262Skevlo */ 312172262Skevlo if ((((apsize ^ 0xff) << 20) | ((1 << 20) - 1)) + 1 != aperture) 313172262Skevlo return EINVAL; 31461452Sdfr 315172262Skevlo pci_write_config(dev, sc->regs[REG_APSIZE], apsize, 1); 316172262Skevlo } else { 317172262Skevlo switch (aperture) { 318172262Skevlo case 0x80000000: 319172262Skevlo key = 0x800; 320172262Skevlo break; 321172262Skevlo case 0x40000000: 322172262Skevlo key = 0xc00; 323172262Skevlo break; 324172262Skevlo case 0x20000000: 325172262Skevlo key = 0xe00; 326172262Skevlo break; 327172262Skevlo case 0x10000000: 328172262Skevlo key = 0xf00; 329172262Skevlo break; 330172262Skevlo case 0x08000000: 331172262Skevlo key = 0xf20; 332172262Skevlo break; 333172262Skevlo case 0x04000000: 334172262Skevlo key = 0xf30; 335172262Skevlo break; 336172262Skevlo case 0x02000000: 337172262Skevlo key = 0xf38; 338172262Skevlo break; 339172262Skevlo default: 340172262Skevlo device_printf(dev, "Invalid aperture size (%dMb)\n", 341172262Skevlo aperture / 1024 / 1024); 342172262Skevlo return EINVAL; 343172262Skevlo } 344172262Skevlo val = pci_read_config(dev, sc->regs[REG_APSIZE], 2); 345172262Skevlo pci_write_config(dev, sc->regs[REG_APSIZE], 346172262Skevlo ((val & ~0xfff) | key), 2); 347172262Skevlo } 34861452Sdfr return 0; 34961452Sdfr} 35061452Sdfr 35161452Sdfrstatic int 35261452Sdfragp_via_bind_page(device_t dev, int offset, vm_offset_t physical) 35361452Sdfr{ 35461452Sdfr struct agp_via_softc *sc = device_get_softc(dev); 35561452Sdfr 35661452Sdfr if (offset < 0 || offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT)) 35761452Sdfr return EINVAL; 35861452Sdfr 35961452Sdfr sc->gatt->ag_virtual[offset >> AGP_PAGE_SHIFT] = physical; 36061452Sdfr return 0; 36161452Sdfr} 36261452Sdfr 36361452Sdfrstatic int 36461452Sdfragp_via_unbind_page(device_t dev, int offset) 36561452Sdfr{ 36661452Sdfr struct agp_via_softc *sc = device_get_softc(dev); 36761452Sdfr 36861452Sdfr if (offset < 0 || offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT)) 36961452Sdfr return EINVAL; 37061452Sdfr 37161452Sdfr sc->gatt->ag_virtual[offset >> AGP_PAGE_SHIFT] = 0; 37261452Sdfr return 0; 37361452Sdfr} 37461452Sdfr 37561452Sdfrstatic void 37661452Sdfragp_via_flush_tlb(device_t dev) 37761452Sdfr{ 378129189Sjhb struct agp_via_softc *sc = device_get_softc(dev); 379147606Sanholt u_int32_t gartctrl; 380129189Sjhb 381147606Sanholt if (sc->regs == via_v2_regs) { 382147606Sanholt pci_write_config(dev, sc->regs[REG_GARTCTRL], 0x8f, 4); 383147606Sanholt pci_write_config(dev, sc->regs[REG_GARTCTRL], 0x0f, 4); 384147606Sanholt } else { 385147606Sanholt gartctrl = pci_read_config(dev, sc->regs[REG_GARTCTRL], 4); 386147606Sanholt pci_write_config(dev, sc->regs[REG_GARTCTRL], gartctrl & 387147606Sanholt ~(1 << 7), 4); 388147606Sanholt pci_write_config(dev, sc->regs[REG_GARTCTRL], gartctrl, 4); 389147606Sanholt } 390147606Sanholt 39161452Sdfr} 39261452Sdfr 39361452Sdfrstatic device_method_t agp_via_methods[] = { 39461452Sdfr /* Device interface */ 39561452Sdfr DEVMETHOD(device_probe, agp_via_probe), 39661452Sdfr DEVMETHOD(device_attach, agp_via_attach), 39761452Sdfr DEVMETHOD(device_detach, agp_via_detach), 39861452Sdfr DEVMETHOD(device_shutdown, bus_generic_shutdown), 39961452Sdfr DEVMETHOD(device_suspend, bus_generic_suspend), 40061452Sdfr DEVMETHOD(device_resume, bus_generic_resume), 40161452Sdfr 40261452Sdfr /* AGP interface */ 40361452Sdfr DEVMETHOD(agp_get_aperture, agp_via_get_aperture), 40461452Sdfr DEVMETHOD(agp_set_aperture, agp_via_set_aperture), 40561452Sdfr DEVMETHOD(agp_bind_page, agp_via_bind_page), 40661452Sdfr DEVMETHOD(agp_unbind_page, agp_via_unbind_page), 40761452Sdfr DEVMETHOD(agp_flush_tlb, agp_via_flush_tlb), 40861452Sdfr DEVMETHOD(agp_enable, agp_generic_enable), 40961452Sdfr DEVMETHOD(agp_alloc_memory, agp_generic_alloc_memory), 41061452Sdfr DEVMETHOD(agp_free_memory, agp_generic_free_memory), 41161452Sdfr DEVMETHOD(agp_bind_memory, agp_generic_bind_memory), 41261452Sdfr DEVMETHOD(agp_unbind_memory, agp_generic_unbind_memory), 41361452Sdfr 41461452Sdfr { 0, 0 } 41561452Sdfr}; 41661452Sdfr 41761452Sdfrstatic driver_t agp_via_driver = { 41861452Sdfr "agp", 41961452Sdfr agp_via_methods, 42061452Sdfr sizeof(struct agp_via_softc), 42161452Sdfr}; 42261452Sdfr 42361452Sdfrstatic devclass_t agp_devclass; 42461452Sdfr 425153572SjhbDRIVER_MODULE(agp_via, hostb, agp_via_driver, agp_devclass, 0, 0); 426113506SmdoddMODULE_DEPEND(agp_via, agp, 1, 1, 1); 427113506SmdoddMODULE_DEPEND(agp_via, pci, 1, 1, 1); 428