agp_via.c revision 200764
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 200764 2009-12-21 03:28:05Z rnoland $"); 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 42173573Sjhb#include <dev/agp/agppriv.h> 43173573Sjhb#include <dev/agp/agpreg.h> 44119288Simp#include <dev/pci/pcivar.h> 45119288Simp#include <dev/pci/pcireg.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"); 88187633Sjkim case 0x03141106: 89187633Sjkim return ("VIA 3314 (P4M800CE) host to PCI bridge"); 90172262Skevlo case 0x03241106: 91172262Skevlo return ("VIA VT3324 (CX700) host to PCI bridge"); 92187633Sjkim case 0x03271106: 93187633Sjkim return ("VIA 3327 (P4M890) host to PCI bridge"); 94187633Sjkim case 0x03641106: 95187633Sjkim return ("VIA 3364 (P4M900) host to PCI bridge"); 96139431Sanholt case 0x03911106: 97139431Sanholt return ("VIA 8371 (Apollo KX133) host to PCI bridge"); 9861452Sdfr case 0x05011106: 9961452Sdfr return ("VIA 8501 (Apollo MVP4) host to PCI bridge"); 10061452Sdfr case 0x05971106: 10161452Sdfr return ("VIA 82C597 (Apollo VP3) host to PCI bridge"); 10261452Sdfr case 0x05981106: 10361452Sdfr return ("VIA 82C598 (Apollo MVP3) host to PCI bridge"); 104139431Sanholt case 0x06011106: 105139431Sanholt return ("VIA 8601 (Apollo ProMedia/PLE133Ta) host to PCI bridge"); 106116921Sjhb case 0x06051106: 107116921Sjhb return ("VIA 82C694X (Apollo Pro 133A) host to PCI bridge"); 10861452Sdfr case 0x06911106: 10961452Sdfr return ("VIA 82C691 (Apollo Pro) host to PCI bridge"); 110139431Sanholt case 0x30911106: 111139431Sanholt return ("VIA 8633 (Pro 266) host to PCI bridge"); 112139431Sanholt case 0x30991106: 113139431Sanholt return ("VIA 8367 (KT266/KY266x/KT333) host to PCI bridge"); 114139431Sanholt case 0x31011106: 115139431Sanholt return ("VIA 8653 (Pro266T) host to PCI bridge"); 116139431Sanholt case 0x31121106: 117139431Sanholt return ("VIA 8361 (KLE133) host to PCI bridge"); 118139431Sanholt case 0x31161106: 119139431Sanholt return ("VIA XM266 (PM266/KM266) host to PCI bridge"); 120139431Sanholt case 0x31231106: 121139431Sanholt return ("VIA 862x (CLE266) host to PCI bridge"); 122139431Sanholt case 0x31281106: 123139431Sanholt return ("VIA 8753 (P4X266) host to PCI bridge"); 124139431Sanholt case 0x31481106: 125139431Sanholt return ("VIA 8703 (P4M266x/P4N266) host to PCI bridge"); 126139431Sanholt case 0x31561106: 127139431Sanholt return ("VIA XN266 (Apollo Pro266) host to PCI bridge"); 128139431Sanholt case 0x31681106: 129139431Sanholt return ("VIA 8754 (PT800) host to PCI bridge"); 130131433Sjhb case 0x31891106: 131131433Sjhb return ("VIA 8377 (Apollo KT400/KT400A/KT600) host to PCI bridge"); 132139431Sanholt case 0x32051106: 133139431Sanholt return ("VIA 8235/8237 (Apollo KM400/KM400A) host to PCI bridge"); 134139431Sanholt case 0x32081106: 135139431Sanholt return ("VIA 8783 (PT890) host to PCI bridge"); 136139431Sanholt case 0x32581106: 137139431Sanholt return ("VIA PT880 host to PCI bridge"); 138139431Sanholt case 0xb1981106: 139139431Sanholt return ("VIA VT83xx/VT87xx/KTxxx/Px8xx host to PCI bridge"); 14061452Sdfr }; 14161452Sdfr 14261452Sdfr return NULL; 14361452Sdfr} 14461452Sdfr 14561452Sdfrstatic int 14661452Sdfragp_via_probe(device_t dev) 14761452Sdfr{ 14861452Sdfr const char *desc; 14961452Sdfr 150127815Snjl if (resource_disabled("agp", device_get_unit(dev))) 151127815Snjl return (ENXIO); 15261452Sdfr desc = agp_via_match(dev); 15361452Sdfr if (desc) { 15461452Sdfr device_set_desc(dev, desc); 155142398Simp return BUS_PROBE_DEFAULT; 15661452Sdfr } 15761452Sdfr 15861452Sdfr return ENXIO; 15961452Sdfr} 16061452Sdfr 16161452Sdfrstatic int 16261452Sdfragp_via_attach(device_t dev) 16361452Sdfr{ 16461452Sdfr struct agp_via_softc *sc = device_get_softc(dev); 16561452Sdfr struct agp_gatt *gatt; 16661452Sdfr int error; 167133406Sanholt u_int32_t agpsel; 168200764Srnoland u_int32_t capid; 16961452Sdfr 170200764Srnoland sc->regs = via_v2_regs; 171200764Srnoland 172200764Srnoland /* Look at the capability register to see if we handle AGP3 */ 173200764Srnoland capid = pci_read_config(dev, agp_find_caps(dev) + AGP_CAPID, 4); 174200764Srnoland if (((capid >> 20) & 0x0f) >= 3) { 175133406Sanholt agpsel = pci_read_config(dev, AGP_VIA_AGPSEL, 1); 176133406Sanholt if ((agpsel & (1 << 1)) == 0) 177133406Sanholt sc->regs = via_v3_regs; 178129189Sjhb } 179129189Sjhb 18061452Sdfr error = agp_generic_attach(dev); 18161452Sdfr if (error) 18261452Sdfr return error; 18361452Sdfr 18461452Sdfr sc->initial_aperture = AGP_GET_APERTURE(dev); 18561452Sdfr 18661452Sdfr for (;;) { 18761452Sdfr gatt = agp_alloc_gatt(dev); 18861452Sdfr if (gatt) 18961452Sdfr break; 19061452Sdfr 19161452Sdfr /* 19261452Sdfr * Probably contigmalloc failure. Try reducing the 19361452Sdfr * aperture so that the gatt size reduces. 19461452Sdfr */ 19561452Sdfr if (AGP_SET_APERTURE(dev, AGP_GET_APERTURE(dev) / 2)) { 19661452Sdfr agp_generic_detach(dev); 19761452Sdfr return ENOMEM; 19861452Sdfr } 19961452Sdfr } 20061452Sdfr sc->gatt = gatt; 20161452Sdfr 202147606Sanholt if (sc->regs == via_v2_regs) { 203147606Sanholt /* Install the gatt. */ 204147606Sanholt pci_write_config(dev, sc->regs[REG_ATTBASE], gatt->ag_physical | 3, 4); 205147606Sanholt 206147606Sanholt /* Enable the aperture. */ 207147606Sanholt pci_write_config(dev, sc->regs[REG_GARTCTRL], 0x0f, 4); 208147606Sanholt } else { 209147606Sanholt u_int32_t gartctrl; 21061452Sdfr 211147606Sanholt /* Install the gatt. */ 212147606Sanholt pci_write_config(dev, sc->regs[REG_ATTBASE], gatt->ag_physical, 4); 213147606Sanholt 214147606Sanholt /* Enable the aperture. */ 215200764Srnoland gartctrl = pci_read_config(dev, sc->regs[REG_GARTCTRL], 4); 216147606Sanholt pci_write_config(dev, sc->regs[REG_GARTCTRL], gartctrl | (3 << 7), 4); 217147606Sanholt } 218147606Sanholt 219172262Skevlo device_printf(dev, "aperture size is %dM\n", 220172262Skevlo sc->initial_aperture / 1024 / 1024); 221172262Skevlo 22261452Sdfr return 0; 22361452Sdfr} 22461452Sdfr 22561452Sdfrstatic int 22661452Sdfragp_via_detach(device_t dev) 22761452Sdfr{ 22861452Sdfr struct agp_via_softc *sc = device_get_softc(dev); 22961452Sdfr 230173203Sjhb agp_free_cdev(dev); 23161452Sdfr 232129189Sjhb pci_write_config(dev, sc->regs[REG_GARTCTRL], 0, 4); 233129189Sjhb pci_write_config(dev, sc->regs[REG_ATTBASE], 0, 4); 23461452Sdfr AGP_SET_APERTURE(dev, sc->initial_aperture); 23561452Sdfr agp_free_gatt(sc->gatt); 236173203Sjhb agp_free_res(dev); 23761452Sdfr 23861452Sdfr return 0; 23961452Sdfr} 24061452Sdfr 24161452Sdfrstatic u_int32_t 24261452Sdfragp_via_get_aperture(device_t dev) 24361452Sdfr{ 244129189Sjhb struct agp_via_softc *sc = device_get_softc(dev); 24561452Sdfr u_int32_t apsize; 24661452Sdfr 247172262Skevlo if (sc->regs == via_v2_regs) { 248200764Srnoland apsize = pci_read_config(dev, sc->regs[REG_APSIZE], 1); 24961452Sdfr 250172262Skevlo /* 251172262Skevlo * The size is determined by the number of low bits of 252172262Skevlo * register APBASE which are forced to zero. The low 20 bits 253172262Skevlo * are always forced to zero and each zero bit in the apsize 254172262Skevlo * field just read forces the corresponding bit in the 27:20 255172262Skevlo * to be zero. We calculate the aperture size accordingly. 256172262Skevlo */ 257172262Skevlo return (((apsize ^ 0xff) << 20) | ((1 << 20) - 1)) + 1; 258172262Skevlo } else { 259172262Skevlo apsize = pci_read_config(dev, sc->regs[REG_APSIZE], 2) & 0xfff; 260172262Skevlo switch (apsize) { 261172262Skevlo case 0x800: 262172262Skevlo return 0x80000000; 263172262Skevlo case 0xc00: 264172262Skevlo return 0x40000000; 265172262Skevlo case 0xe00: 266172262Skevlo return 0x20000000; 267172262Skevlo case 0xf00: 268172262Skevlo return 0x10000000; 269172262Skevlo case 0xf20: 270172262Skevlo return 0x08000000; 271172262Skevlo case 0xf30: 272172262Skevlo return 0x04000000; 273172262Skevlo case 0xf38: 274172262Skevlo return 0x02000000; 275200764Srnoland case 0xf3c: 276200764Srnoland return 0x01000000; 277200764Srnoland case 0xf3e: 278200764Srnoland return 0x00800000; 279200764Srnoland case 0xf3f: 280200764Srnoland return 0x00400000; 281172262Skevlo default: 282200764Srnoland device_printf(dev, "Invalid aperture setting 0x%x\n", 283172262Skevlo pci_read_config(dev, sc->regs[REG_APSIZE], 2)); 284172262Skevlo return 0; 285172262Skevlo } 286172262Skevlo } 28761452Sdfr} 28861452Sdfr 28961452Sdfrstatic int 29061452Sdfragp_via_set_aperture(device_t dev, u_int32_t aperture) 29161452Sdfr{ 292129189Sjhb struct agp_via_softc *sc = device_get_softc(dev); 293172262Skevlo u_int32_t apsize, key, val; 29461452Sdfr 295172262Skevlo if (sc->regs == via_v2_regs) { 296172262Skevlo /* 297172262Skevlo * Reverse the magic from get_aperture. 298172262Skevlo */ 299172262Skevlo apsize = ((aperture - 1) >> 20) ^ 0xff; 30061452Sdfr 301172262Skevlo /* 302172262Skevlo * Double check for sanity. 303172262Skevlo */ 304172262Skevlo if ((((apsize ^ 0xff) << 20) | ((1 << 20) - 1)) + 1 != aperture) 305172262Skevlo return EINVAL; 30661452Sdfr 307172262Skevlo pci_write_config(dev, sc->regs[REG_APSIZE], apsize, 1); 308172262Skevlo } else { 309172262Skevlo switch (aperture) { 310172262Skevlo case 0x80000000: 311172262Skevlo key = 0x800; 312172262Skevlo break; 313172262Skevlo case 0x40000000: 314172262Skevlo key = 0xc00; 315172262Skevlo break; 316172262Skevlo case 0x20000000: 317172262Skevlo key = 0xe00; 318172262Skevlo break; 319172262Skevlo case 0x10000000: 320172262Skevlo key = 0xf00; 321172262Skevlo break; 322172262Skevlo case 0x08000000: 323172262Skevlo key = 0xf20; 324172262Skevlo break; 325172262Skevlo case 0x04000000: 326172262Skevlo key = 0xf30; 327172262Skevlo break; 328172262Skevlo case 0x02000000: 329172262Skevlo key = 0xf38; 330172262Skevlo break; 331200764Srnoland case 0x01000000: 332200764Srnoland key = 0xf3c; 333200764Srnoland break; 334200764Srnoland case 0x00800000: 335200764Srnoland key = 0xf3e; 336200764Srnoland break; 337200764Srnoland case 0x00400000: 338200764Srnoland key = 0xf3f; 339200764Srnoland break; 340172262Skevlo default: 341172262Skevlo device_printf(dev, "Invalid aperture size (%dMb)\n", 342172262Skevlo aperture / 1024 / 1024); 343172262Skevlo return EINVAL; 344172262Skevlo } 345172262Skevlo val = pci_read_config(dev, sc->regs[REG_APSIZE], 2); 346172262Skevlo pci_write_config(dev, sc->regs[REG_APSIZE], 347172262Skevlo ((val & ~0xfff) | key), 2); 348172262Skevlo } 34961452Sdfr return 0; 35061452Sdfr} 35161452Sdfr 35261452Sdfrstatic int 353189578Simpagp_via_bind_page(device_t dev, vm_offset_t offset, vm_offset_t physical) 35461452Sdfr{ 35561452Sdfr struct agp_via_softc *sc = device_get_softc(dev); 35661452Sdfr 357190169Srnoland if (offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT)) 35861452Sdfr return EINVAL; 35961452Sdfr 36061452Sdfr sc->gatt->ag_virtual[offset >> AGP_PAGE_SHIFT] = physical; 36161452Sdfr return 0; 36261452Sdfr} 36361452Sdfr 36461452Sdfrstatic int 365189578Simpagp_via_unbind_page(device_t dev, vm_offset_t offset) 36661452Sdfr{ 36761452Sdfr struct agp_via_softc *sc = device_get_softc(dev); 36861452Sdfr 369190169Srnoland if (offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT)) 37061452Sdfr return EINVAL; 37161452Sdfr 37261452Sdfr sc->gatt->ag_virtual[offset >> AGP_PAGE_SHIFT] = 0; 37361452Sdfr return 0; 37461452Sdfr} 37561452Sdfr 37661452Sdfrstatic void 37761452Sdfragp_via_flush_tlb(device_t dev) 37861452Sdfr{ 379129189Sjhb struct agp_via_softc *sc = device_get_softc(dev); 380147606Sanholt u_int32_t gartctrl; 381129189Sjhb 382147606Sanholt if (sc->regs == via_v2_regs) { 383147606Sanholt pci_write_config(dev, sc->regs[REG_GARTCTRL], 0x8f, 4); 384147606Sanholt pci_write_config(dev, sc->regs[REG_GARTCTRL], 0x0f, 4); 385147606Sanholt } else { 386147606Sanholt gartctrl = pci_read_config(dev, sc->regs[REG_GARTCTRL], 4); 387147606Sanholt pci_write_config(dev, sc->regs[REG_GARTCTRL], gartctrl & 388147606Sanholt ~(1 << 7), 4); 389147606Sanholt pci_write_config(dev, sc->regs[REG_GARTCTRL], gartctrl, 4); 390147606Sanholt } 391147606Sanholt 39261452Sdfr} 39361452Sdfr 39461452Sdfrstatic device_method_t agp_via_methods[] = { 39561452Sdfr /* Device interface */ 39661452Sdfr DEVMETHOD(device_probe, agp_via_probe), 39761452Sdfr DEVMETHOD(device_attach, agp_via_attach), 39861452Sdfr DEVMETHOD(device_detach, agp_via_detach), 39961452Sdfr DEVMETHOD(device_shutdown, bus_generic_shutdown), 40061452Sdfr DEVMETHOD(device_suspend, bus_generic_suspend), 40161452Sdfr DEVMETHOD(device_resume, bus_generic_resume), 40261452Sdfr 40361452Sdfr /* AGP interface */ 40461452Sdfr DEVMETHOD(agp_get_aperture, agp_via_get_aperture), 40561452Sdfr DEVMETHOD(agp_set_aperture, agp_via_set_aperture), 40661452Sdfr DEVMETHOD(agp_bind_page, agp_via_bind_page), 40761452Sdfr DEVMETHOD(agp_unbind_page, agp_via_unbind_page), 40861452Sdfr DEVMETHOD(agp_flush_tlb, agp_via_flush_tlb), 40961452Sdfr DEVMETHOD(agp_enable, agp_generic_enable), 41061452Sdfr DEVMETHOD(agp_alloc_memory, agp_generic_alloc_memory), 41161452Sdfr DEVMETHOD(agp_free_memory, agp_generic_free_memory), 41261452Sdfr DEVMETHOD(agp_bind_memory, agp_generic_bind_memory), 41361452Sdfr DEVMETHOD(agp_unbind_memory, agp_generic_unbind_memory), 41461452Sdfr 41561452Sdfr { 0, 0 } 41661452Sdfr}; 41761452Sdfr 41861452Sdfrstatic driver_t agp_via_driver = { 41961452Sdfr "agp", 42061452Sdfr agp_via_methods, 42161452Sdfr sizeof(struct agp_via_softc), 42261452Sdfr}; 42361452Sdfr 42461452Sdfrstatic devclass_t agp_devclass; 42561452Sdfr 426153572SjhbDRIVER_MODULE(agp_via, hostb, agp_via_driver, agp_devclass, 0, 0); 427113506SmdoddMODULE_DEPEND(agp_via, agp, 1, 1, 1); 428113506SmdoddMODULE_DEPEND(agp_via, pci, 1, 1, 1); 429