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: releng/10.2/sys/dev/agp/agp_via.c 244926 2013-01-01 18:16:49Z antoine $"); 29116192Sobrien 3061452Sdfr#include <sys/param.h> 3161452Sdfr#include <sys/systm.h> 3261452Sdfr#include <sys/malloc.h> 3361452Sdfr#include <sys/kernel.h> 34129878Sphk#include <sys/module.h> 3561452Sdfr#include <sys/bus.h> 3661452Sdfr#include <sys/lock.h> 3776827Salfred#include <sys/mutex.h> 3879339Sjhb#include <sys/proc.h> 3961452Sdfr 40173573Sjhb#include <dev/agp/agppriv.h> 41173573Sjhb#include <dev/agp/agpreg.h> 42119288Simp#include <dev/pci/pcivar.h> 43119288Simp#include <dev/pci/pcireg.h> 4461452Sdfr 4561452Sdfr#include <vm/vm.h> 4661452Sdfr#include <vm/vm_object.h> 4761452Sdfr#include <vm/pmap.h> 4861452Sdfr 49129189Sjhb#define REG_GARTCTRL 0 50129189Sjhb#define REG_APSIZE 1 51129189Sjhb#define REG_ATTBASE 2 52129189Sjhb 5361452Sdfrstruct agp_via_softc { 5461452Sdfr struct agp_softc agp; 5561452Sdfr u_int32_t initial_aperture; /* aperture size at startup */ 5661452Sdfr struct agp_gatt *gatt; 57129189Sjhb int *regs; 5861452Sdfr}; 5961452Sdfr 60129189Sjhbstatic int via_v2_regs[] = { AGP_VIA_GARTCTRL, AGP_VIA_APSIZE, 61129189Sjhb AGP_VIA_ATTBASE }; 62129189Sjhbstatic int via_v3_regs[] = { AGP3_VIA_GARTCTRL, AGP3_VIA_APSIZE, 63129189Sjhb AGP3_VIA_ATTBASE }; 64129189Sjhb 6561452Sdfrstatic const char* 6661452Sdfragp_via_match(device_t dev) 6761452Sdfr{ 6861452Sdfr if (pci_get_class(dev) != PCIC_BRIDGE 6961452Sdfr || pci_get_subclass(dev) != PCIS_BRIDGE_HOST) 7061452Sdfr return NULL; 7161452Sdfr 7261452Sdfr if (agp_find_caps(dev) == 0) 7361452Sdfr return NULL; 7461452Sdfr 7561452Sdfr switch (pci_get_devid(dev)) { 76139431Sanholt case 0x01981106: 77139431Sanholt return ("VIA 8763 (P4X600) host to PCI bridge"); 78139431Sanholt case 0x02591106: 79139431Sanholt return ("VIA PM800/PN800/PM880/PN880 host to PCI bridge"); 80139431Sanholt case 0x02691106: 81139431Sanholt return ("VIA KT880 host to PCI bridge"); 82139431Sanholt case 0x02961106: 83139431Sanholt return ("VIA 3296 (P4M800) host to PCI bridge"); 84116921Sjhb case 0x03051106: 85139431Sanholt return ("VIA 82C8363 (Apollo KT133x/KM133) host to PCI bridge"); 86187633Sjkim case 0x03141106: 87187633Sjkim return ("VIA 3314 (P4M800CE) host to PCI bridge"); 88172262Skevlo case 0x03241106: 89172262Skevlo return ("VIA VT3324 (CX700) host to PCI bridge"); 90187633Sjkim case 0x03271106: 91187633Sjkim return ("VIA 3327 (P4M890) host to PCI bridge"); 92187633Sjkim case 0x03641106: 93187633Sjkim return ("VIA 3364 (P4M900) host to PCI bridge"); 94139431Sanholt case 0x03911106: 95139431Sanholt return ("VIA 8371 (Apollo KX133) host to PCI bridge"); 9661452Sdfr case 0x05011106: 9761452Sdfr return ("VIA 8501 (Apollo MVP4) host to PCI bridge"); 9861452Sdfr case 0x05971106: 9961452Sdfr return ("VIA 82C597 (Apollo VP3) host to PCI bridge"); 10061452Sdfr case 0x05981106: 10161452Sdfr return ("VIA 82C598 (Apollo MVP3) host to PCI bridge"); 102139431Sanholt case 0x06011106: 103139431Sanholt return ("VIA 8601 (Apollo ProMedia/PLE133Ta) host to PCI bridge"); 104116921Sjhb case 0x06051106: 105116921Sjhb return ("VIA 82C694X (Apollo Pro 133A) host to PCI bridge"); 10661452Sdfr case 0x06911106: 10761452Sdfr return ("VIA 82C691 (Apollo Pro) host to PCI bridge"); 108139431Sanholt case 0x30911106: 109139431Sanholt return ("VIA 8633 (Pro 266) host to PCI bridge"); 110139431Sanholt case 0x30991106: 111139431Sanholt return ("VIA 8367 (KT266/KY266x/KT333) host to PCI bridge"); 112139431Sanholt case 0x31011106: 113139431Sanholt return ("VIA 8653 (Pro266T) host to PCI bridge"); 114139431Sanholt case 0x31121106: 115139431Sanholt return ("VIA 8361 (KLE133) host to PCI bridge"); 116139431Sanholt case 0x31161106: 117139431Sanholt return ("VIA XM266 (PM266/KM266) host to PCI bridge"); 118139431Sanholt case 0x31231106: 119139431Sanholt return ("VIA 862x (CLE266) host to PCI bridge"); 120139431Sanholt case 0x31281106: 121139431Sanholt return ("VIA 8753 (P4X266) host to PCI bridge"); 122139431Sanholt case 0x31481106: 123139431Sanholt return ("VIA 8703 (P4M266x/P4N266) host to PCI bridge"); 124139431Sanholt case 0x31561106: 125139431Sanholt return ("VIA XN266 (Apollo Pro266) host to PCI bridge"); 126139431Sanholt case 0x31681106: 127139431Sanholt return ("VIA 8754 (PT800) host to PCI bridge"); 128131433Sjhb case 0x31891106: 129131433Sjhb return ("VIA 8377 (Apollo KT400/KT400A/KT600) host to PCI bridge"); 130139431Sanholt case 0x32051106: 131139431Sanholt return ("VIA 8235/8237 (Apollo KM400/KM400A) host to PCI bridge"); 132139431Sanholt case 0x32081106: 133139431Sanholt return ("VIA 8783 (PT890) host to PCI bridge"); 134139431Sanholt case 0x32581106: 135139431Sanholt return ("VIA PT880 host to PCI bridge"); 136139431Sanholt case 0xb1981106: 137139431Sanholt return ("VIA VT83xx/VT87xx/KTxxx/Px8xx host to PCI bridge"); 138244926Santoine } 13961452Sdfr 14061452Sdfr return NULL; 14161452Sdfr} 14261452Sdfr 14361452Sdfrstatic int 14461452Sdfragp_via_probe(device_t dev) 14561452Sdfr{ 14661452Sdfr const char *desc; 14761452Sdfr 148241885Seadler if (resource_disabled("agp", device_get_unit(dev))) 149241885Seadler return (ENXIO); 15061452Sdfr desc = agp_via_match(dev); 15161452Sdfr if (desc) { 15261452Sdfr device_set_desc(dev, desc); 153142398Simp return BUS_PROBE_DEFAULT; 15461452Sdfr } 15561452Sdfr 15661452Sdfr return ENXIO; 15761452Sdfr} 15861452Sdfr 15961452Sdfrstatic int 16061452Sdfragp_via_attach(device_t dev) 16161452Sdfr{ 16261452Sdfr struct agp_via_softc *sc = device_get_softc(dev); 16361452Sdfr struct agp_gatt *gatt; 16461452Sdfr int error; 165133406Sanholt u_int32_t agpsel; 166200764Srnoland u_int32_t capid; 16761452Sdfr 168200764Srnoland sc->regs = via_v2_regs; 169200764Srnoland 170200764Srnoland /* Look at the capability register to see if we handle AGP3 */ 171200764Srnoland capid = pci_read_config(dev, agp_find_caps(dev) + AGP_CAPID, 4); 172200764Srnoland if (((capid >> 20) & 0x0f) >= 3) { 173133406Sanholt agpsel = pci_read_config(dev, AGP_VIA_AGPSEL, 1); 174133406Sanholt if ((agpsel & (1 << 1)) == 0) 175133406Sanholt sc->regs = via_v3_regs; 176129189Sjhb } 177129189Sjhb 17861452Sdfr error = agp_generic_attach(dev); 17961452Sdfr if (error) 18061452Sdfr return error; 18161452Sdfr 18261452Sdfr sc->initial_aperture = AGP_GET_APERTURE(dev); 18361452Sdfr 18461452Sdfr for (;;) { 18561452Sdfr gatt = agp_alloc_gatt(dev); 18661452Sdfr if (gatt) 18761452Sdfr break; 18861452Sdfr 18961452Sdfr /* 19061452Sdfr * Probably contigmalloc failure. Try reducing the 19161452Sdfr * aperture so that the gatt size reduces. 19261452Sdfr */ 19361452Sdfr if (AGP_SET_APERTURE(dev, AGP_GET_APERTURE(dev) / 2)) { 19461452Sdfr agp_generic_detach(dev); 19561452Sdfr return ENOMEM; 19661452Sdfr } 19761452Sdfr } 19861452Sdfr sc->gatt = gatt; 19961452Sdfr 200147606Sanholt if (sc->regs == via_v2_regs) { 201147606Sanholt /* Install the gatt. */ 202147606Sanholt pci_write_config(dev, sc->regs[REG_ATTBASE], gatt->ag_physical | 3, 4); 203147606Sanholt 204147606Sanholt /* Enable the aperture. */ 205147606Sanholt pci_write_config(dev, sc->regs[REG_GARTCTRL], 0x0f, 4); 206147606Sanholt } else { 207147606Sanholt u_int32_t gartctrl; 20861452Sdfr 209147606Sanholt /* Install the gatt. */ 210147606Sanholt pci_write_config(dev, sc->regs[REG_ATTBASE], gatt->ag_physical, 4); 211147606Sanholt 212147606Sanholt /* Enable the aperture. */ 213200764Srnoland gartctrl = pci_read_config(dev, sc->regs[REG_GARTCTRL], 4); 214147606Sanholt pci_write_config(dev, sc->regs[REG_GARTCTRL], gartctrl | (3 << 7), 4); 215147606Sanholt } 216147606Sanholt 217172262Skevlo device_printf(dev, "aperture size is %dM\n", 218172262Skevlo sc->initial_aperture / 1024 / 1024); 219172262Skevlo 22061452Sdfr return 0; 22161452Sdfr} 22261452Sdfr 22361452Sdfrstatic int 22461452Sdfragp_via_detach(device_t dev) 22561452Sdfr{ 22661452Sdfr struct agp_via_softc *sc = device_get_softc(dev); 22761452Sdfr 228173203Sjhb agp_free_cdev(dev); 22961452Sdfr 230129189Sjhb pci_write_config(dev, sc->regs[REG_GARTCTRL], 0, 4); 231129189Sjhb pci_write_config(dev, sc->regs[REG_ATTBASE], 0, 4); 23261452Sdfr AGP_SET_APERTURE(dev, sc->initial_aperture); 23361452Sdfr agp_free_gatt(sc->gatt); 234173203Sjhb agp_free_res(dev); 23561452Sdfr 23661452Sdfr return 0; 23761452Sdfr} 23861452Sdfr 23961452Sdfrstatic u_int32_t 24061452Sdfragp_via_get_aperture(device_t dev) 24161452Sdfr{ 242129189Sjhb struct agp_via_softc *sc = device_get_softc(dev); 24361452Sdfr u_int32_t apsize; 24461452Sdfr 245172262Skevlo if (sc->regs == via_v2_regs) { 246200764Srnoland apsize = pci_read_config(dev, sc->regs[REG_APSIZE], 1); 24761452Sdfr 248172262Skevlo /* 249172262Skevlo * The size is determined by the number of low bits of 250172262Skevlo * register APBASE which are forced to zero. The low 20 bits 251172262Skevlo * are always forced to zero and each zero bit in the apsize 252172262Skevlo * field just read forces the corresponding bit in the 27:20 253172262Skevlo * to be zero. We calculate the aperture size accordingly. 254172262Skevlo */ 255172262Skevlo return (((apsize ^ 0xff) << 20) | ((1 << 20) - 1)) + 1; 256172262Skevlo } else { 257172262Skevlo apsize = pci_read_config(dev, sc->regs[REG_APSIZE], 2) & 0xfff; 258172262Skevlo switch (apsize) { 259172262Skevlo case 0x800: 260172262Skevlo return 0x80000000; 261172262Skevlo case 0xc00: 262172262Skevlo return 0x40000000; 263172262Skevlo case 0xe00: 264172262Skevlo return 0x20000000; 265172262Skevlo case 0xf00: 266172262Skevlo return 0x10000000; 267172262Skevlo case 0xf20: 268172262Skevlo return 0x08000000; 269172262Skevlo case 0xf30: 270172262Skevlo return 0x04000000; 271172262Skevlo case 0xf38: 272172262Skevlo return 0x02000000; 273200764Srnoland case 0xf3c: 274200764Srnoland return 0x01000000; 275200764Srnoland case 0xf3e: 276200764Srnoland return 0x00800000; 277200764Srnoland case 0xf3f: 278200764Srnoland return 0x00400000; 279172262Skevlo default: 280200764Srnoland device_printf(dev, "Invalid aperture setting 0x%x\n", 281172262Skevlo pci_read_config(dev, sc->regs[REG_APSIZE], 2)); 282172262Skevlo return 0; 283172262Skevlo } 284172262Skevlo } 28561452Sdfr} 28661452Sdfr 28761452Sdfrstatic int 28861452Sdfragp_via_set_aperture(device_t dev, u_int32_t aperture) 28961452Sdfr{ 290129189Sjhb struct agp_via_softc *sc = device_get_softc(dev); 291172262Skevlo u_int32_t apsize, key, val; 29261452Sdfr 293172262Skevlo if (sc->regs == via_v2_regs) { 294172262Skevlo /* 295172262Skevlo * Reverse the magic from get_aperture. 296172262Skevlo */ 297172262Skevlo apsize = ((aperture - 1) >> 20) ^ 0xff; 29861452Sdfr 299172262Skevlo /* 300172262Skevlo * Double check for sanity. 301172262Skevlo */ 302172262Skevlo if ((((apsize ^ 0xff) << 20) | ((1 << 20) - 1)) + 1 != aperture) 303172262Skevlo return EINVAL; 30461452Sdfr 305172262Skevlo pci_write_config(dev, sc->regs[REG_APSIZE], apsize, 1); 306172262Skevlo } else { 307172262Skevlo switch (aperture) { 308172262Skevlo case 0x80000000: 309172262Skevlo key = 0x800; 310172262Skevlo break; 311172262Skevlo case 0x40000000: 312172262Skevlo key = 0xc00; 313172262Skevlo break; 314172262Skevlo case 0x20000000: 315172262Skevlo key = 0xe00; 316172262Skevlo break; 317172262Skevlo case 0x10000000: 318172262Skevlo key = 0xf00; 319172262Skevlo break; 320172262Skevlo case 0x08000000: 321172262Skevlo key = 0xf20; 322172262Skevlo break; 323172262Skevlo case 0x04000000: 324172262Skevlo key = 0xf30; 325172262Skevlo break; 326172262Skevlo case 0x02000000: 327172262Skevlo key = 0xf38; 328172262Skevlo break; 329200764Srnoland case 0x01000000: 330200764Srnoland key = 0xf3c; 331200764Srnoland break; 332200764Srnoland case 0x00800000: 333200764Srnoland key = 0xf3e; 334200764Srnoland break; 335200764Srnoland case 0x00400000: 336200764Srnoland key = 0xf3f; 337200764Srnoland break; 338172262Skevlo default: 339172262Skevlo device_printf(dev, "Invalid aperture size (%dMb)\n", 340172262Skevlo aperture / 1024 / 1024); 341172262Skevlo return EINVAL; 342172262Skevlo } 343172262Skevlo val = pci_read_config(dev, sc->regs[REG_APSIZE], 2); 344172262Skevlo pci_write_config(dev, sc->regs[REG_APSIZE], 345172262Skevlo ((val & ~0xfff) | key), 2); 346172262Skevlo } 34761452Sdfr return 0; 34861452Sdfr} 34961452Sdfr 35061452Sdfrstatic int 351189578Simpagp_via_bind_page(device_t dev, vm_offset_t offset, vm_offset_t physical) 35261452Sdfr{ 35361452Sdfr struct agp_via_softc *sc = device_get_softc(dev); 35461452Sdfr 355190169Srnoland if (offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT)) 35661452Sdfr return EINVAL; 35761452Sdfr 35861452Sdfr sc->gatt->ag_virtual[offset >> AGP_PAGE_SHIFT] = physical; 35961452Sdfr return 0; 36061452Sdfr} 36161452Sdfr 36261452Sdfrstatic int 363189578Simpagp_via_unbind_page(device_t dev, vm_offset_t offset) 36461452Sdfr{ 36561452Sdfr struct agp_via_softc *sc = device_get_softc(dev); 36661452Sdfr 367190169Srnoland if (offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT)) 36861452Sdfr return EINVAL; 36961452Sdfr 37061452Sdfr sc->gatt->ag_virtual[offset >> AGP_PAGE_SHIFT] = 0; 37161452Sdfr return 0; 37261452Sdfr} 37361452Sdfr 37461452Sdfrstatic void 37561452Sdfragp_via_flush_tlb(device_t dev) 37661452Sdfr{ 377129189Sjhb struct agp_via_softc *sc = device_get_softc(dev); 378147606Sanholt u_int32_t gartctrl; 379129189Sjhb 380147606Sanholt if (sc->regs == via_v2_regs) { 381147606Sanholt pci_write_config(dev, sc->regs[REG_GARTCTRL], 0x8f, 4); 382147606Sanholt pci_write_config(dev, sc->regs[REG_GARTCTRL], 0x0f, 4); 383147606Sanholt } else { 384147606Sanholt gartctrl = pci_read_config(dev, sc->regs[REG_GARTCTRL], 4); 385147606Sanholt pci_write_config(dev, sc->regs[REG_GARTCTRL], gartctrl & 386147606Sanholt ~(1 << 7), 4); 387147606Sanholt pci_write_config(dev, sc->regs[REG_GARTCTRL], gartctrl, 4); 388147606Sanholt } 389147606Sanholt 39061452Sdfr} 39161452Sdfr 39261452Sdfrstatic device_method_t agp_via_methods[] = { 39361452Sdfr /* Device interface */ 39461452Sdfr DEVMETHOD(device_probe, agp_via_probe), 39561452Sdfr DEVMETHOD(device_attach, agp_via_attach), 39661452Sdfr DEVMETHOD(device_detach, agp_via_detach), 39761452Sdfr DEVMETHOD(device_shutdown, bus_generic_shutdown), 39861452Sdfr DEVMETHOD(device_suspend, bus_generic_suspend), 39961452Sdfr DEVMETHOD(device_resume, bus_generic_resume), 40061452Sdfr 40161452Sdfr /* AGP interface */ 40261452Sdfr DEVMETHOD(agp_get_aperture, agp_via_get_aperture), 40361452Sdfr DEVMETHOD(agp_set_aperture, agp_via_set_aperture), 40461452Sdfr DEVMETHOD(agp_bind_page, agp_via_bind_page), 40561452Sdfr DEVMETHOD(agp_unbind_page, agp_via_unbind_page), 40661452Sdfr DEVMETHOD(agp_flush_tlb, agp_via_flush_tlb), 40761452Sdfr DEVMETHOD(agp_enable, agp_generic_enable), 40861452Sdfr DEVMETHOD(agp_alloc_memory, agp_generic_alloc_memory), 40961452Sdfr DEVMETHOD(agp_free_memory, agp_generic_free_memory), 41061452Sdfr DEVMETHOD(agp_bind_memory, agp_generic_bind_memory), 41161452Sdfr DEVMETHOD(agp_unbind_memory, agp_generic_unbind_memory), 41261452Sdfr 41361452Sdfr { 0, 0 } 41461452Sdfr}; 41561452Sdfr 41661452Sdfrstatic driver_t agp_via_driver = { 41761452Sdfr "agp", 41861452Sdfr agp_via_methods, 41961452Sdfr sizeof(struct agp_via_softc), 42061452Sdfr}; 42161452Sdfr 42261452Sdfrstatic devclass_t agp_devclass; 42361452Sdfr 424153572SjhbDRIVER_MODULE(agp_via, hostb, agp_via_driver, agp_devclass, 0, 0); 425113506SmdoddMODULE_DEPEND(agp_via, agp, 1, 1, 1); 426113506SmdoddMODULE_DEPEND(agp_via, pci, 1, 1, 1); 427