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_ati.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) 2005 Eric Anholt
    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  * Based on reading the Linux 2.6.8.1 driver by Dave Jones.
   27  *
   28  * $FreeBSD: src/sys/dev/agp/agp_ati.c,v 1.5 2007/11/12 21:51:36 jhb Exp $
   29  */
   30 
   31 #include <sys/param.h>
   32 #include <sys/systm.h>
   33 #include <sys/malloc.h>
   34 #include <sys/kernel.h>
   35 #include <sys/module.h>
   36 #include <sys/bus.h>
   37 #include <sys/lock.h>
   38 #include <sys/proc.h>
   39 
   40 #include <bus/pci/pcivar.h>
   41 #include <bus/pci/pcireg.h>
   42 #include "agppriv.h"
   43 #include "agpreg.h"
   44 
   45 #include <vm/vm.h>
   46 #include <vm/vm_object.h>
   47 #include <vm/pmap.h>
   48 #include <sys/rman.h>
   49 
   50 MALLOC_DECLARE(M_AGP);
   51 
   52 #define READ4(off)      bus_space_read_4(sc->bst, sc->bsh, off)
   53 #define WRITE4(off,v)   bus_space_write_4(sc->bst, sc->bsh, off, v)
   54 
   55 struct agp_ati_softc {
   56         struct agp_softc agp;
   57         struct resource *regs;  /* memory mapped control registers */
   58         bus_space_tag_t bst;    /* bus_space tag */
   59         bus_space_handle_t bsh; /* bus_space handle */
   60         u_int32_t       initial_aperture; /* aperture size at startup */
   61         char            is_rs300;
   62 
   63         /* The GATT */
   64         u_int32_t       ag_entries;
   65         u_int32_t      *ag_virtual;     /* virtual address of gatt */
   66         u_int32_t      *ag_vdir;        /* virtual address of page dir */
   67         vm_offset_t     ag_pdir;        /* physical address of page dir */
   68 };
   69 
   70 
   71 static const char*
   72 agp_ati_match(device_t dev)
   73 {
   74         if (pci_get_class(dev) != PCIC_BRIDGE ||
   75             pci_get_subclass(dev) != PCIS_BRIDGE_HOST)
   76                 return NULL;
   77 
   78         if (agp_find_caps(dev) == 0)
   79                 return NULL;
   80 
   81         switch (pci_get_devid(dev)) {
   82         case 0xcab01002:
   83                 return ("ATI RS100 AGP bridge");
   84         case 0xcab21002:
   85                 return ("ATI RS200 AGP bridge");
   86         case 0xcbb21002:
   87                 return ("ATI RS200M AGP bridge");
   88         case 0xcab31002:
   89                 return ("ATI RS250 AGP bridge");
   90         case 0x58301002:
   91                 return ("ATI RS300_100 AGP bridge");
   92         case 0x58311002:
   93                 return ("ATI RS300_133 AGP bridge");
   94         case 0x58321002:
   95                 return ("ATI RS300_166 AGP bridge");
   96         case 0x58331002:
   97                 return ("ATI RS300_200 AGP bridge");
   98         };
   99 
  100         return NULL;
  101 }
  102 
  103 static int
  104 agp_ati_probe(device_t dev)
  105 {
  106         const char *desc;
  107 
  108         desc = agp_ati_match(dev);
  109         if (desc) {
  110                 device_verbose(dev);
  111                 device_set_desc(dev, desc);
  112                 return 0;
  113         }
  114 
  115         return ENXIO;
  116 }
  117 
  118 static int
  119 agp_ati_alloc_gatt(device_t dev)
  120 {
  121         struct agp_ati_softc *sc = device_get_softc(dev);
  122         u_int32_t apsize = AGP_GET_APERTURE(dev);
  123         u_int32_t entries = apsize >> AGP_PAGE_SHIFT;
  124         u_int32_t apbase_offset;
  125         int i;
  126 
  127         /* Alloc the GATT -- pointers to pages of AGP memory */
  128         sc->ag_entries = entries;
  129         sc->ag_virtual = kmalloc(entries * sizeof(u_int32_t), M_AGP,
  130             M_NOWAIT | M_ZERO);
  131         if (sc->ag_virtual == NULL) {
  132                 if (bootverbose)
  133                         device_printf(dev, "aperture allocation failed\n");
  134                 return ENOMEM;
  135         }
  136 
  137         /* Alloc the page directory -- pointers to each page of the GATT */
  138         sc->ag_vdir = kmalloc(AGP_PAGE_SIZE, M_AGP, M_NOWAIT | M_ZERO);
  139         if (sc->ag_vdir == NULL) {
  140                 if (bootverbose)
  141                         device_printf(dev, "pagedir allocation failed\n");
  142                 kfree(sc->ag_virtual, M_AGP);
  143                 return ENOMEM;
  144         }
  145         sc->ag_pdir = vtophys((vm_offset_t)sc->ag_vdir);
  146 
  147         apbase_offset = pci_read_config(dev, AGP_APBASE, 4) >> 22;
  148         /* Fill in the pagedir's pointers to GATT pages */
  149         for (i = 0; i < sc->ag_entries / 1024; i++) {
  150                 vm_offset_t va;
  151                 vm_offset_t pa;
  152 
  153                 va = ((vm_offset_t)sc->ag_virtual) + i * AGP_PAGE_SIZE;
  154                 pa = vtophys(va);
  155                 sc->ag_vdir[apbase_offset + i] = pa | 1;
  156         }
  157 
  158         /*
  159          * Make sure the chipset can see everything.
  160          */
  161         agp_flush_cache();
  162 
  163         return 0;
  164 }
  165 
  166 
  167 static int
  168 agp_ati_attach(device_t dev)
  169 {
  170         struct agp_ati_softc *sc = device_get_softc(dev);
  171         int error, rid;
  172         u_int32_t temp;
  173         u_int32_t apsize_reg, agpmode_reg;
  174 
  175         error = agp_generic_attach(dev);
  176         if (error)
  177                 return error;
  178 
  179         switch (pci_get_devid(dev)) {
  180         case 0xcab01002: /* ATI RS100 AGP bridge */
  181         case 0xcab21002: /* ATI RS200 AGP bridge */
  182         case 0xcbb21002: /* ATI RS200M AGP bridge */
  183         case 0xcab31002: /* ATI RS250 AGP bridge */
  184                 sc->is_rs300 = 0;
  185                 apsize_reg = ATI_RS100_APSIZE;
  186                 agpmode_reg = ATI_RS100_IG_AGPMODE;
  187                 break;
  188         case 0x58301002: /* ATI RS300_100 AGP bridge */
  189         case 0x58311002: /* ATI RS300_133 AGP bridge */
  190         case 0x58321002: /* ATI RS300_166 AGP bridge */
  191         case 0x58331002: /* ATI RS300_200 AGP bridge */
  192                 sc->is_rs300 = 1;
  193                 apsize_reg = ATI_RS300_APSIZE;
  194                 agpmode_reg = ATI_RS300_IG_AGPMODE;
  195                 break;
  196         default:
  197                 /* Unknown chipset */
  198                 return EINVAL;
  199         };
  200 
  201         rid = ATI_GART_MMADDR;
  202         sc->regs = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE);
  203         if (!sc->regs) {
  204                 agp_generic_detach(dev);
  205                 return ENOMEM;
  206         }
  207 
  208         sc->bst = rman_get_bustag(sc->regs);
  209         sc->bsh = rman_get_bushandle(sc->regs);
  210 
  211         sc->initial_aperture = AGP_GET_APERTURE(dev);
  212         if (sc->initial_aperture == 0) {
  213                 device_printf(dev, "bad initial aperture size, disabling\n");
  214                 return ENXIO;
  215         }
  216 
  217         for (;;) {
  218                 if (agp_ati_alloc_gatt(dev) == 0)
  219                         break;
  220 
  221                 /*
  222                  * Probably contigmalloc failure. Try reducing the
  223                  * aperture so that the gatt size reduces.
  224                  */
  225                 if (AGP_SET_APERTURE(dev, AGP_GET_APERTURE(dev) / 2))
  226                         return ENOMEM;
  227         }
  228 
  229         temp = pci_read_config(dev, apsize_reg, 4);
  230         pci_write_config(dev, apsize_reg, temp | 1, 4);
  231 
  232         pci_write_config(dev, agpmode_reg, 0x20000, 4);
  233 
  234         WRITE4(ATI_GART_FEATURE_ID, 0x00060000);
  235 
  236         temp = pci_read_config(dev, 4, 4);      /* XXX: Magic reg# */
  237         pci_write_config(dev, 4, temp | (1 << 14), 4);
  238 
  239         WRITE4(ATI_GART_BASE, sc->ag_pdir);
  240 
  241         AGP_FLUSH_TLB(dev);
  242 
  243         return 0;
  244 }
  245 
  246 static int
  247 agp_ati_detach(device_t dev)
  248 {
  249         struct agp_ati_softc *sc = device_get_softc(dev);
  250         u_int32_t apsize_reg, temp;
  251 
  252         agp_free_cdev(dev);
  253 
  254         if (sc->is_rs300)
  255                 apsize_reg = ATI_RS300_APSIZE;
  256         else
  257                 apsize_reg = ATI_RS100_APSIZE;
  258 
  259         /* Clear the GATT base */
  260         WRITE4(ATI_GART_BASE, 0);
  261 
  262         /* Put the aperture back the way it started. */
  263         AGP_SET_APERTURE(dev, sc->initial_aperture);
  264 
  265         temp = pci_read_config(dev, apsize_reg, 4);
  266         pci_write_config(dev, apsize_reg, temp & ~1, 4);
  267 
  268         kfree(sc->ag_vdir, M_AGP);
  269         kfree(sc->ag_virtual, M_AGP);
  270 
  271         bus_release_resource(dev, SYS_RES_MEMORY, ATI_GART_MMADDR, sc->regs);
  272         agp_free_res(dev);
  273 
  274         return 0;
  275 }
  276 
  277 static u_int32_t
  278 agp_ati_get_aperture(device_t dev)
  279 {
  280         struct agp_ati_softc *sc = device_get_softc(dev);
  281         int size_value;
  282 
  283         if (sc->is_rs300)
  284                 size_value = pci_read_config(dev, ATI_RS300_APSIZE, 4);
  285         else
  286                 size_value = pci_read_config(dev, ATI_RS100_APSIZE, 4);
  287 
  288         size_value = (size_value & 0x0000000e) >> 1;
  289         size_value = (32 * 1024 * 1024) << size_value;
  290 
  291         return size_value;
  292 }
  293 
  294 static int
  295 agp_ati_set_aperture(device_t dev, u_int32_t aperture)
  296 {
  297         struct agp_ati_softc *sc = device_get_softc(dev);
  298         int size_value;
  299         u_int32_t apsize_reg;
  300 
  301         if (sc->is_rs300)
  302                 apsize_reg = ATI_RS300_APSIZE;
  303         else
  304                 apsize_reg = ATI_RS100_APSIZE;
  305 
  306         size_value = pci_read_config(dev, apsize_reg, 4);
  307 
  308         size_value &= ~0x0000000e;
  309         size_value |= (ffs(aperture / (32 * 1024 * 1024)) - 1) << 1;
  310 
  311         pci_write_config(dev, apsize_reg, size_value, 4);
  312 
  313         return 0;
  314 }
  315 
  316 static int
  317 agp_ati_bind_page(device_t dev, vm_offset_t offset, vm_offset_t physical)
  318 {
  319         struct agp_ati_softc *sc = device_get_softc(dev);
  320 
  321         if (offset >= (sc->ag_entries << AGP_PAGE_SHIFT))
  322                 return EINVAL;
  323 
  324         sc->ag_virtual[offset >> AGP_PAGE_SHIFT] = physical | 1;
  325 
  326         return 0;
  327 }
  328 
  329 static int
  330 agp_ati_unbind_page(device_t dev, vm_offset_t offset)
  331 {
  332         struct agp_ati_softc *sc = device_get_softc(dev);
  333 
  334         if (offset >= (sc->ag_entries << AGP_PAGE_SHIFT))
  335                 return EINVAL;
  336 
  337         sc->ag_virtual[offset >> AGP_PAGE_SHIFT] = 0;
  338         return 0;
  339 }
  340 
  341 static void
  342 agp_ati_flush_tlb(device_t dev)
  343 {
  344         struct agp_ati_softc *sc = device_get_softc(dev);
  345 
  346         /* Set the cache invalidate bit and wait for the chipset to clear */
  347         WRITE4(ATI_GART_CACHE_CNTRL, 1);
  348         (void)READ4(ATI_GART_CACHE_CNTRL);
  349 }
  350 
  351 static device_method_t agp_ati_methods[] = {
  352         /* Device interface */
  353         DEVMETHOD(device_probe,         agp_ati_probe),
  354         DEVMETHOD(device_attach,        agp_ati_attach),
  355         DEVMETHOD(device_detach,        agp_ati_detach),
  356         DEVMETHOD(device_shutdown,      bus_generic_shutdown),
  357         DEVMETHOD(device_suspend,       bus_generic_suspend),
  358         DEVMETHOD(device_resume,        bus_generic_resume),
  359 
  360         /* AGP interface */
  361         DEVMETHOD(agp_get_aperture,     agp_ati_get_aperture),
  362         DEVMETHOD(agp_set_aperture,     agp_ati_set_aperture),
  363         DEVMETHOD(agp_bind_page,        agp_ati_bind_page),
  364         DEVMETHOD(agp_unbind_page,      agp_ati_unbind_page),
  365         DEVMETHOD(agp_flush_tlb,        agp_ati_flush_tlb),
  366         DEVMETHOD(agp_enable,           agp_generic_enable),
  367         DEVMETHOD(agp_alloc_memory,     agp_generic_alloc_memory),
  368         DEVMETHOD(agp_free_memory,      agp_generic_free_memory),
  369         DEVMETHOD(agp_bind_memory,      agp_generic_bind_memory),
  370         DEVMETHOD(agp_unbind_memory,    agp_generic_unbind_memory),
  371 
  372         DEVMETHOD_END
  373 };
  374 
  375 static driver_t agp_ati_driver = {
  376         "agp",
  377         agp_ati_methods,
  378         sizeof(struct agp_ati_softc),
  379 };
  380 
  381 static devclass_t agp_devclass;
  382 
  383 DRIVER_MODULE(agp_ati, pci, agp_ati_driver, agp_devclass, NULL, NULL);
  384 MODULE_DEPEND(agp_ati, agp, 1, 1, 1);
  385 MODULE_DEPEND(agp_ati, pci, 1, 1, 1);

Cache object: 35f227131241a8e4c7896949c43bdcee


[ 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.