The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]

FreeBSD/Linux Kernel Cross Reference
sys/dev/agp/agp_via.c

Version: -  FREEBSD  -  FREEBSD-12-STABLE  -  FREEBSD-12-0  -  FREEBSD-11-STABLE  -  FREEBSD-11-2  -  FREEBSD-11-1  -  FREEBSD-11-0  -  FREEBSD-10-STABLE  -  FREEBSD-10-4  -  FREEBSD-10-3  -  FREEBSD-10-2  -  FREEBSD-10-1  -  FREEBSD-10-0  -  FREEBSD-9-STABLE  -  FREEBSD-9-3  -  FREEBSD-9-2  -  FREEBSD-9-1  -  FREEBSD-9-0  -  FREEBSD-8-STABLE  -  FREEBSD-8-4  -  FREEBSD-8-3  -  FREEBSD-8-2  -  FREEBSD-8-1  -  FREEBSD-8-0  -  FREEBSD-7-STABLE  -  FREEBSD-7-4  -  FREEBSD-7-3  -  FREEBSD-7-2  -  FREEBSD-7-1  -  FREEBSD-7-0  -  FREEBSD-6-STABLE  -  FREEBSD-6-4  -  FREEBSD-6-3  -  FREEBSD-6-2  -  FREEBSD-6-1  -  FREEBSD-6-0  -  FREEBSD-5-STABLE  -  FREEBSD-5-5  -  FREEBSD-5-4  -  FREEBSD-5-3  -  FREEBSD-5-2  -  FREEBSD-5-1  -  FREEBSD-5-0  -  FREEBSD-4-STABLE  -  FREEBSD-3-STABLE  -  FREEBSD22  -  linux-2.6  -  linux-2.4.22  -  MK83  -  MK84  -  PLAN9  -  DFBSD  -  NETBSD  -  NETBSD5  -  NETBSD4  -  NETBSD3  -  NETBSD20  -  OPENBSD  -  xnu-517  -  xnu-792  -  xnu-792.6.70  -  xnu-1228  -  xnu-1456.1.26  -  xnu-1699.24.8  -  xnu-2050.18.24  -  OPENSOLARIS  -  minix-3-1-1 
SearchContext: -  none  -  3  -  10 

    1 /*-
    2  * Copyright (c) 2000 Doug Rabson
    3  * All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer.
   10  * 2. Redistributions in binary form must reproduce the above copyright
   11  *    notice, this list of conditions and the following disclaimer in the
   12  *    documentation and/or other materials provided with the distribution.
   13  *
   14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   24  * SUCH DAMAGE.
   25  */
   26 
   27 #include <sys/cdefs.h>
   28 __FBSDID("$FreeBSD: releng/9.1/sys/dev/agp/agp_via.c 200764 2009-12-21 03:28:05Z rnoland $");
   29 
   30 #include "opt_bus.h"
   31 
   32 #include <sys/param.h>
   33 #include <sys/systm.h>
   34 #include <sys/malloc.h>
   35 #include <sys/kernel.h>
   36 #include <sys/module.h>
   37 #include <sys/bus.h>
   38 #include <sys/lock.h>
   39 #include <sys/mutex.h>
   40 #include <sys/proc.h>
   41 
   42 #include <dev/agp/agppriv.h>
   43 #include <dev/agp/agpreg.h>
   44 #include <dev/pci/pcivar.h>
   45 #include <dev/pci/pcireg.h>
   46 
   47 #include <vm/vm.h>
   48 #include <vm/vm_object.h>
   49 #include <vm/pmap.h>
   50 
   51 #define REG_GARTCTRL    0
   52 #define REG_APSIZE      1
   53 #define REG_ATTBASE     2
   54 
   55 struct agp_via_softc {
   56         struct agp_softc agp;
   57         u_int32_t       initial_aperture; /* aperture size at startup */
   58         struct agp_gatt *gatt;
   59         int             *regs;
   60 };
   61 
   62 static int via_v2_regs[] = { AGP_VIA_GARTCTRL, AGP_VIA_APSIZE,
   63     AGP_VIA_ATTBASE };
   64 static int via_v3_regs[] = { AGP3_VIA_GARTCTRL, AGP3_VIA_APSIZE,
   65     AGP3_VIA_ATTBASE };
   66 
   67 static const char*
   68 agp_via_match(device_t dev)
   69 {
   70         if (pci_get_class(dev) != PCIC_BRIDGE
   71             || pci_get_subclass(dev) != PCIS_BRIDGE_HOST)
   72                 return NULL;
   73 
   74         if (agp_find_caps(dev) == 0)
   75                 return NULL;
   76 
   77         switch (pci_get_devid(dev)) {
   78         case 0x01981106:
   79                 return ("VIA 8763 (P4X600) host to PCI bridge");
   80         case 0x02591106:
   81                 return ("VIA PM800/PN800/PM880/PN880 host to PCI bridge");
   82         case 0x02691106:
   83                 return ("VIA KT880 host to PCI bridge");
   84         case 0x02961106:
   85                 return ("VIA 3296 (P4M800) host to PCI bridge");
   86         case 0x03051106:
   87                 return ("VIA 82C8363 (Apollo KT133x/KM133) host to PCI bridge");
   88         case 0x03141106:
   89                 return ("VIA 3314 (P4M800CE) host to PCI bridge");
   90         case 0x03241106:
   91                 return ("VIA VT3324 (CX700) host to PCI bridge");
   92         case 0x03271106:
   93                 return ("VIA 3327 (P4M890) host to PCI bridge");
   94         case 0x03641106:
   95                 return ("VIA 3364 (P4M900) host to PCI bridge");
   96         case 0x03911106:
   97                 return ("VIA 8371 (Apollo KX133) host to PCI bridge");
   98         case 0x05011106:
   99                 return ("VIA 8501 (Apollo MVP4) host to PCI bridge");
  100         case 0x05971106:
  101                 return ("VIA 82C597 (Apollo VP3) host to PCI bridge");
  102         case 0x05981106:
  103                 return ("VIA 82C598 (Apollo MVP3) host to PCI bridge");
  104         case 0x06011106:
  105                 return ("VIA 8601 (Apollo ProMedia/PLE133Ta) host to PCI bridge");
  106         case 0x06051106:
  107                 return ("VIA 82C694X (Apollo Pro 133A) host to PCI bridge");
  108         case 0x06911106:
  109                 return ("VIA 82C691 (Apollo Pro) host to PCI bridge");
  110         case 0x30911106:
  111                 return ("VIA 8633 (Pro 266) host to PCI bridge");
  112         case 0x30991106:
  113                 return ("VIA 8367 (KT266/KY266x/KT333) host to PCI bridge");
  114         case 0x31011106:
  115                 return ("VIA 8653 (Pro266T) host to PCI bridge");
  116         case 0x31121106:
  117                 return ("VIA 8361 (KLE133) host to PCI bridge");
  118         case 0x31161106:
  119                 return ("VIA XM266 (PM266/KM266) host to PCI bridge");
  120         case 0x31231106:
  121                 return ("VIA 862x (CLE266) host to PCI bridge");
  122         case 0x31281106:
  123                 return ("VIA 8753 (P4X266) host to PCI bridge");
  124         case 0x31481106:
  125                 return ("VIA 8703 (P4M266x/P4N266) host to PCI bridge");
  126         case 0x31561106:
  127                 return ("VIA XN266 (Apollo Pro266) host to PCI bridge");
  128         case 0x31681106:
  129                 return ("VIA 8754 (PT800) host to PCI bridge");
  130         case 0x31891106:
  131                 return ("VIA 8377 (Apollo KT400/KT400A/KT600) host to PCI bridge");
  132         case 0x32051106:
  133                 return ("VIA 8235/8237 (Apollo KM400/KM400A) host to PCI bridge");
  134         case 0x32081106:
  135                 return ("VIA 8783 (PT890) host to PCI bridge");
  136         case 0x32581106:
  137                 return ("VIA PT880 host to PCI bridge");
  138         case 0xb1981106:
  139                 return ("VIA VT83xx/VT87xx/KTxxx/Px8xx host to PCI bridge");
  140         };
  141 
  142         return NULL;
  143 }
  144 
  145 static int
  146 agp_via_probe(device_t dev)
  147 {
  148         const char *desc;
  149 
  150         if (resource_disabled("agp", device_get_unit(dev)))
  151                 return (ENXIO);
  152         desc = agp_via_match(dev);
  153         if (desc) {
  154                 device_set_desc(dev, desc);
  155                 return BUS_PROBE_DEFAULT;
  156         }
  157 
  158         return ENXIO;
  159 }
  160 
  161 static int
  162 agp_via_attach(device_t dev)
  163 {
  164         struct agp_via_softc *sc = device_get_softc(dev);
  165         struct agp_gatt *gatt;
  166         int error;
  167         u_int32_t agpsel;
  168         u_int32_t capid;
  169 
  170         sc->regs = via_v2_regs;
  171 
  172         /* Look at the capability register to see if we handle AGP3 */
  173         capid = pci_read_config(dev, agp_find_caps(dev) + AGP_CAPID, 4);
  174         if (((capid >> 20) & 0x0f) >= 3) { 
  175                 agpsel = pci_read_config(dev, AGP_VIA_AGPSEL, 1);
  176                 if ((agpsel & (1 << 1)) == 0)
  177                         sc->regs = via_v3_regs;
  178         }
  179         
  180         error = agp_generic_attach(dev);
  181         if (error)
  182                 return error;
  183 
  184         sc->initial_aperture = AGP_GET_APERTURE(dev);
  185 
  186         for (;;) {
  187                 gatt = agp_alloc_gatt(dev);
  188                 if (gatt)
  189                         break;
  190 
  191                 /*
  192                  * Probably contigmalloc failure. Try reducing the
  193                  * aperture so that the gatt size reduces.
  194                  */
  195                 if (AGP_SET_APERTURE(dev, AGP_GET_APERTURE(dev) / 2)) {
  196                         agp_generic_detach(dev);
  197                         return ENOMEM;
  198                 }
  199         }
  200         sc->gatt = gatt;
  201 
  202         if (sc->regs == via_v2_regs) {
  203                 /* Install the gatt. */
  204                 pci_write_config(dev, sc->regs[REG_ATTBASE], gatt->ag_physical | 3, 4);
  205                 
  206                 /* Enable the aperture. */
  207                 pci_write_config(dev, sc->regs[REG_GARTCTRL], 0x0f, 4);
  208         } else {
  209                 u_int32_t gartctrl;
  210 
  211                 /* Install the gatt. */
  212                 pci_write_config(dev, sc->regs[REG_ATTBASE], gatt->ag_physical, 4);
  213                 
  214                 /* Enable the aperture. */
  215                 gartctrl = pci_read_config(dev, sc->regs[REG_GARTCTRL], 4);
  216                 pci_write_config(dev, sc->regs[REG_GARTCTRL], gartctrl | (3 << 7), 4);
  217         }
  218 
  219         device_printf(dev, "aperture size is %dM\n",
  220                 sc->initial_aperture / 1024 / 1024);
  221 
  222         return 0;
  223 }
  224 
  225 static int
  226 agp_via_detach(device_t dev)
  227 {
  228         struct agp_via_softc *sc = device_get_softc(dev);
  229 
  230         agp_free_cdev(dev);
  231 
  232         pci_write_config(dev, sc->regs[REG_GARTCTRL], 0, 4);
  233         pci_write_config(dev, sc->regs[REG_ATTBASE], 0, 4);
  234         AGP_SET_APERTURE(dev, sc->initial_aperture);
  235         agp_free_gatt(sc->gatt);
  236         agp_free_res(dev);
  237 
  238         return 0;
  239 }
  240 
  241 static u_int32_t
  242 agp_via_get_aperture(device_t dev)
  243 {
  244         struct agp_via_softc *sc = device_get_softc(dev);
  245         u_int32_t apsize;
  246 
  247         if (sc->regs == via_v2_regs) {
  248                 apsize = pci_read_config(dev, sc->regs[REG_APSIZE], 1);
  249 
  250                 /*
  251                  * The size is determined by the number of low bits of
  252                  * register APBASE which are forced to zero. The low 20 bits
  253                  * are always forced to zero and each zero bit in the apsize
  254                  * field just read forces the corresponding bit in the 27:20
  255                  * to be zero. We calculate the aperture size accordingly.
  256                  */
  257                 return (((apsize ^ 0xff) << 20) | ((1 << 20) - 1)) + 1;
  258         } else {
  259                 apsize = pci_read_config(dev, sc->regs[REG_APSIZE], 2) & 0xfff;
  260                 switch (apsize) {
  261                 case 0x800:
  262                         return 0x80000000;
  263                 case 0xc00:
  264                         return 0x40000000;
  265                 case 0xe00:
  266                         return 0x20000000;
  267                 case 0xf00:
  268                         return 0x10000000;
  269                 case 0xf20:
  270                         return 0x08000000;
  271                 case 0xf30:
  272                         return 0x04000000;
  273                 case 0xf38:
  274                         return 0x02000000;
  275                 case 0xf3c:
  276                         return 0x01000000;
  277                 case 0xf3e:
  278                         return 0x00800000;
  279                 case 0xf3f:
  280                         return 0x00400000;
  281                 default:
  282                         device_printf(dev, "Invalid aperture setting 0x%x\n",
  283                             pci_read_config(dev, sc->regs[REG_APSIZE], 2));
  284                         return 0;
  285                 }
  286         }
  287 }
  288 
  289 static int
  290 agp_via_set_aperture(device_t dev, u_int32_t aperture)
  291 {
  292         struct agp_via_softc *sc = device_get_softc(dev);
  293         u_int32_t apsize, key, val;
  294 
  295         if (sc->regs == via_v2_regs) {
  296                 /*
  297                  * Reverse the magic from get_aperture.
  298                  */
  299                 apsize = ((aperture - 1) >> 20) ^ 0xff;
  300 
  301                 /*
  302                  * Double check for sanity.
  303                  */
  304                 if ((((apsize ^ 0xff) << 20) | ((1 << 20) - 1)) + 1 != aperture)
  305                         return EINVAL;
  306 
  307                 pci_write_config(dev, sc->regs[REG_APSIZE], apsize, 1);
  308         } else {
  309                 switch (aperture) {
  310                 case 0x80000000:
  311                         key = 0x800;
  312                         break;
  313                 case 0x40000000:
  314                         key = 0xc00;
  315                         break;
  316                 case 0x20000000:
  317                         key = 0xe00;
  318                         break;
  319                 case 0x10000000:
  320                         key = 0xf00;
  321                         break;
  322                 case 0x08000000:
  323                         key = 0xf20;
  324                         break;
  325                 case 0x04000000:
  326                         key = 0xf30;
  327                         break;
  328                 case 0x02000000:
  329                         key = 0xf38;
  330                         break;
  331                 case 0x01000000:
  332                         key = 0xf3c;
  333                         break;
  334                 case 0x00800000:
  335                         key = 0xf3e;
  336                         break;
  337                 case 0x00400000:
  338                         key = 0xf3f;
  339                         break;
  340                 default:
  341                         device_printf(dev, "Invalid aperture size (%dMb)\n",
  342                             aperture / 1024 / 1024);
  343                         return EINVAL;
  344                 }
  345                 val = pci_read_config(dev, sc->regs[REG_APSIZE], 2);
  346                 pci_write_config(dev, sc->regs[REG_APSIZE], 
  347                     ((val & ~0xfff) | key), 2);
  348         }
  349         return 0;
  350 }
  351 
  352 static int
  353 agp_via_bind_page(device_t dev, vm_offset_t offset, vm_offset_t physical)
  354 {
  355         struct agp_via_softc *sc = device_get_softc(dev);
  356 
  357         if (offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT))
  358                 return EINVAL;
  359 
  360         sc->gatt->ag_virtual[offset >> AGP_PAGE_SHIFT] = physical;
  361         return 0;
  362 }
  363 
  364 static int
  365 agp_via_unbind_page(device_t dev, vm_offset_t offset)
  366 {
  367         struct agp_via_softc *sc = device_get_softc(dev);
  368 
  369         if (offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT))
  370                 return EINVAL;
  371 
  372         sc->gatt->ag_virtual[offset >> AGP_PAGE_SHIFT] = 0;
  373         return 0;
  374 }
  375 
  376 static void
  377 agp_via_flush_tlb(device_t dev)
  378 {
  379         struct agp_via_softc *sc = device_get_softc(dev);
  380         u_int32_t gartctrl;
  381 
  382         if (sc->regs == via_v2_regs) {
  383                 pci_write_config(dev, sc->regs[REG_GARTCTRL], 0x8f, 4);
  384                 pci_write_config(dev, sc->regs[REG_GARTCTRL], 0x0f, 4);
  385         } else {
  386                 gartctrl = pci_read_config(dev, sc->regs[REG_GARTCTRL], 4);
  387                 pci_write_config(dev, sc->regs[REG_GARTCTRL], gartctrl &
  388                     ~(1 << 7), 4);
  389                 pci_write_config(dev, sc->regs[REG_GARTCTRL], gartctrl, 4);
  390         }
  391         
  392 }
  393 
  394 static device_method_t agp_via_methods[] = {
  395         /* Device interface */
  396         DEVMETHOD(device_probe,         agp_via_probe),
  397         DEVMETHOD(device_attach,        agp_via_attach),
  398         DEVMETHOD(device_detach,        agp_via_detach),
  399         DEVMETHOD(device_shutdown,      bus_generic_shutdown),
  400         DEVMETHOD(device_suspend,       bus_generic_suspend),
  401         DEVMETHOD(device_resume,        bus_generic_resume),
  402 
  403         /* AGP interface */
  404         DEVMETHOD(agp_get_aperture,     agp_via_get_aperture),
  405         DEVMETHOD(agp_set_aperture,     agp_via_set_aperture),
  406         DEVMETHOD(agp_bind_page,        agp_via_bind_page),
  407         DEVMETHOD(agp_unbind_page,      agp_via_unbind_page),
  408         DEVMETHOD(agp_flush_tlb,        agp_via_flush_tlb),
  409         DEVMETHOD(agp_enable,           agp_generic_enable),
  410         DEVMETHOD(agp_alloc_memory,     agp_generic_alloc_memory),
  411         DEVMETHOD(agp_free_memory,      agp_generic_free_memory),
  412         DEVMETHOD(agp_bind_memory,      agp_generic_bind_memory),
  413         DEVMETHOD(agp_unbind_memory,    agp_generic_unbind_memory),
  414 
  415         { 0, 0 }
  416 };
  417 
  418 static driver_t agp_via_driver = {
  419         "agp",
  420         agp_via_methods,
  421         sizeof(struct agp_via_softc),
  422 };
  423 
  424 static devclass_t agp_devclass;
  425 
  426 DRIVER_MODULE(agp_via, hostb, agp_via_driver, agp_devclass, 0, 0);
  427 MODULE_DEPEND(agp_via, agp, 1, 1, 1);
  428 MODULE_DEPEND(agp_via, pci, 1, 1, 1);

Cache object: 4f87095ac7036c8cc0cff95944c667ff


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]


This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.