drivers/gpu/drm/radeon/radeon_agp.c

   1 /*
   2  * Copyright 2008 Red Hat Inc.
   3  * Copyright 2009 Jerome Glisse.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice shall be included in
  13  * all copies or substantial portions of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  19  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  20  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  21  * OTHER DEALINGS IN THE SOFTWARE.
  22  *
  23  * Authors:
  24  *    Dave Airlie
  25  *    Jerome Glisse <glisse@freedesktop.org>
  26  */
  27
  28 #include <linux/pci.h>
  29
  30 #include <drm/drm_agpsupport.h>
  31 #include <drm/drm_device.h>
  32 #include <drm/radeon_drm.h>
  33
  34 #include "radeon.h"
  35
  36 #if IS_ENABLED(CONFIG_AGP)
  37
  38 struct radeon_agpmode_quirk {
  39         u32 hostbridge_vendor;
  40         u32 hostbridge_device;
  41         u32 chip_vendor;
  42         u32 chip_device;
  43         u32 subsys_vendor;
  44         u32 subsys_device;
  45         u32 default_mode;
  46 };
  47
  48 static struct radeon_agpmode_quirk radeon_agpmode_quirk_list[] = {
  49         /* Intel E7505 Memory Controller Hub / RV350 AR [Radeon 9600XT] Needs AGPMode 4 (deb #515326) */
  50         { PCI_VENDOR_ID_INTEL, 0x2550, PCI_VENDOR_ID_ATI, 0x4152, 0x1458, 0x4038, 4},
  51         /* Intel 82865G/PE/P DRAM Controller/Host-Hub / Mobility 9800 Needs AGPMode 4 (deb #462590) */
  52         { PCI_VENDOR_ID_INTEL, 0x2570, PCI_VENDOR_ID_ATI, 0x4a4e, PCI_VENDOR_ID_DELL, 0x5106, 4},
  53         /* Intel 82865G/PE/P DRAM Controller/Host-Hub / RV280 [Radeon 9200 SE] Needs AGPMode 4 (lp #300304) */
  54         { PCI_VENDOR_ID_INTEL, 0x2570, PCI_VENDOR_ID_ATI, 0x5964,
  55                 0x148c, 0x2073, 4},
  56         /* Intel 82855PM Processor to I/O Controller / Mobility M6 LY Needs AGPMode 1 (deb #467235) */
  57         { PCI_VENDOR_ID_INTEL, 0x3340, PCI_VENDOR_ID_ATI, 0x4c59,
  58                 PCI_VENDOR_ID_IBM, 0x052f, 1},
  59         /* Intel 82855PM host bridge / Mobility 9600 M10 RV350 Needs AGPMode 1 (lp #195051) */
  60         { PCI_VENDOR_ID_INTEL, 0x3340, PCI_VENDOR_ID_ATI, 0x4e50,
  61                 PCI_VENDOR_ID_IBM, 0x0550, 1},
  62         /* Intel 82855PM host bridge / RV250/M9 GL [Mobility FireGL 9000/Radeon 9000] needs AGPMode 1 (Thinkpad T40p) */
  63         { PCI_VENDOR_ID_INTEL, 0x3340, PCI_VENDOR_ID_ATI, 0x4c66,
  64                 PCI_VENDOR_ID_IBM, 0x054d, 1},
  65         /* Intel 82855PM host bridge / Mobility M7 needs AGPMode 1 */
  66         { PCI_VENDOR_ID_INTEL, 0x3340, PCI_VENDOR_ID_ATI, 0x4c57,
  67                 PCI_VENDOR_ID_IBM, 0x0530, 1},
  68         /* Intel 82855PM host bridge / FireGL Mobility T2 RV350 Needs AGPMode 2 (fdo #20647) */
  69         { PCI_VENDOR_ID_INTEL, 0x3340, PCI_VENDOR_ID_ATI, 0x4e54,
  70                 PCI_VENDOR_ID_IBM, 0x054f, 2},
  71         /* Intel 82855PM host bridge / Mobility M9+ / VaioPCG-V505DX Needs AGPMode 2 (fdo #17928) */
  72         { PCI_VENDOR_ID_INTEL, 0x3340, PCI_VENDOR_ID_ATI, 0x5c61,
  73                 PCI_VENDOR_ID_SONY, 0x816b, 2},
  74         /* Intel 82855PM Processor to I/O Controller / Mobility M9+ Needs AGPMode 8 (phoronix forum) */
  75         { PCI_VENDOR_ID_INTEL, 0x3340, PCI_VENDOR_ID_ATI, 0x5c61,
  76                 PCI_VENDOR_ID_SONY, 0x8195, 8},
  77         /* Intel 82830 830 Chipset Host Bridge / Mobility M6 LY Needs AGPMode 2 (fdo #17360)*/
  78         { PCI_VENDOR_ID_INTEL, 0x3575, PCI_VENDOR_ID_ATI, 0x4c59,
  79                 PCI_VENDOR_ID_DELL, 0x00e3, 2},
  80         /* Intel 82852/82855 host bridge / Mobility FireGL 9000 RV250 Needs AGPMode 1 (lp #296617) */
  81         { PCI_VENDOR_ID_INTEL, 0x3580, PCI_VENDOR_ID_ATI, 0x4c66,
  82                 PCI_VENDOR_ID_DELL, 0x0149, 1},
  83         /* Intel 82855PM host bridge / Mobility FireGL 9000 RV250 Needs AGPMode 1 for suspend/resume */
  84         { PCI_VENDOR_ID_INTEL, 0x3340, PCI_VENDOR_ID_ATI, 0x4c66,
  85                 PCI_VENDOR_ID_IBM, 0x0531, 1},
  86         /* Intel 82852/82855 host bridge / Mobility 9600 M10 RV350 Needs AGPMode 1 (deb #467460) */
  87         { PCI_VENDOR_ID_INTEL, 0x3580, PCI_VENDOR_ID_ATI, 0x4e50,
  88                 0x1025, 0x0061, 1},
  89         /* Intel 82852/82855 host bridge / Mobility 9600 M10 RV350 Needs AGPMode 1 (lp #203007) */
  90         { PCI_VENDOR_ID_INTEL, 0x3580, PCI_VENDOR_ID_ATI, 0x4e50,
  91                 0x1025, 0x0064, 1},
  92         /* Intel 82852/82855 host bridge / Mobility 9600 M10 RV350 Needs AGPMode 1 (lp #141551) */
  93         { PCI_VENDOR_ID_INTEL, 0x3580, PCI_VENDOR_ID_ATI, 0x4e50,
  94                 PCI_VENDOR_ID_ASUSTEK, 0x1942, 1},
  95         /* Intel 82852/82855 host bridge / Mobility 9600/9700 Needs AGPMode 1 (deb #510208) */
  96         { PCI_VENDOR_ID_INTEL, 0x3580, PCI_VENDOR_ID_ATI, 0x4e50,
  97                 0x10cf, 0x127f, 1},
  98         /* ASRock K7VT4A+ AGP 8x / ATI Radeon 9250 AGP Needs AGPMode 4 (lp #133192) */
  99         { 0x1849, 0x3189, PCI_VENDOR_ID_ATI, 0x5960,
 100                 0x1787, 0x5960, 4},
 101         /* VIA K8M800 Host Bridge / RV280 [Radeon 9200 PRO] Needs AGPMode 4 (fdo #12544) */
 102         { PCI_VENDOR_ID_VIA, 0x0204, PCI_VENDOR_ID_ATI, 0x5960,
 103                 0x17af, 0x2020, 4},
 104         /* VIA KT880 Host Bridge / RV350 [Radeon 9550] Needs AGPMode 4 (fdo #19981) */
 105         { PCI_VENDOR_ID_VIA, 0x0269, PCI_VENDOR_ID_ATI, 0x4153,
 106                 PCI_VENDOR_ID_ASUSTEK, 0x003c, 4},
 107         /* VIA VT8363 Host Bridge / R200 QL [Radeon 8500] Needs AGPMode 2 (lp #141551) */
 108         { PCI_VENDOR_ID_VIA, 0x0305, PCI_VENDOR_ID_ATI, 0x514c,
 109                 PCI_VENDOR_ID_ATI, 0x013a, 2},
 110         /* VIA VT82C693A Host Bridge / RV280 [Radeon 9200 PRO] Needs AGPMode 2 (deb #515512) */
 111         { PCI_VENDOR_ID_VIA, 0x0691, PCI_VENDOR_ID_ATI, 0x5960,
 112                 PCI_VENDOR_ID_ASUSTEK, 0x004c, 2},
 113         /* VIA VT82C693A Host Bridge / RV280 [Radeon 9200 PRO] Needs AGPMode 2 */
 114         { PCI_VENDOR_ID_VIA, 0x0691, PCI_VENDOR_ID_ATI, 0x5960,
 115                 PCI_VENDOR_ID_ASUSTEK, 0x0054, 2},
 116         /* VIA VT8377 Host Bridge / R200 QM [Radeon 9100] Needs AGPMode 4 (deb #461144) */
 117         { PCI_VENDOR_ID_VIA, 0x3189, PCI_VENDOR_ID_ATI, 0x514d,
 118                 0x174b, 0x7149, 4},
 119         /* VIA VT8377 Host Bridge / RV280 [Radeon 9200 PRO] Needs AGPMode 4 (lp #312693) */
 120         { PCI_VENDOR_ID_VIA, 0x3189, PCI_VENDOR_ID_ATI, 0x5960,
 121                 0x1462, 0x0380, 4},
 122         /* VIA VT8377 Host Bridge / RV280 Needs AGPMode 4 (ati ML) */
 123         { PCI_VENDOR_ID_VIA, 0x3189, PCI_VENDOR_ID_ATI, 0x5964,
 124                 0x148c, 0x2073, 4},
 125         /* ATI Host Bridge / RV280 [M9+] Needs AGPMode 1 (phoronix forum) */
 126         { PCI_VENDOR_ID_ATI, 0xcbb2, PCI_VENDOR_ID_ATI, 0x5c61,
 127                 PCI_VENDOR_ID_SONY, 0x8175, 1},
 128         { 0, 0, 0, 0, 0, 0, 0 },
 129 };
 130 #endif
 131
 132 int radeon_agp_init(struct radeon_device *rdev)
 133 {
 134 #if IS_ENABLED(CONFIG_AGP)
 135         struct radeon_agpmode_quirk *p = radeon_agpmode_quirk_list;
 136         struct drm_agp_mode mode;
 137         struct drm_agp_info info;
 138         uint32_t agp_status;
 139         int default_mode;
 140         bool is_v3;
 141         int ret;
 142
 143         /* Acquire AGP. */
 144         ret = drm_agp_acquire(rdev->ddev);
 145         if (ret) {
 146                 DRM_ERROR("Unable to acquire AGP: %d\n", ret);
 147                 return ret;
 148         }
 149
 150         ret = drm_agp_info(rdev->ddev, &info);
 151         if (ret) {
 152                 drm_agp_release(rdev->ddev);
 153                 DRM_ERROR("Unable to get AGP info: %d\n", ret);
 154                 return ret;
 155         }
 156
 157         if (rdev->ddev->agp->agp_info.aper_size < 32) {
 158                 drm_agp_release(rdev->ddev);
 159                 dev_warn(rdev->dev, "AGP aperture too small (%zuM) "
 160                         "need at least 32M, disabling AGP\n",
 161                         rdev->ddev->agp->agp_info.aper_size);
 162                 return -EINVAL;
 163         }
 164
 165         mode.mode = info.mode;
 166         /* chips with the agp to pcie bridge don't have the AGP_STATUS register
 167          * Just use the whatever mode the host sets up.
 168          */
 169         if (rdev->family <= CHIP_RV350)
 170                 agp_status = (RREG32(RADEON_AGP_STATUS) | RADEON_AGPv3_MODE) & mode.mode;
 171         else
 172                 agp_status = mode.mode;
 173         is_v3 = !!(agp_status & RADEON_AGPv3_MODE);
 174
 175         if (is_v3) {
 176                 default_mode = (agp_status & RADEON_AGPv3_8X_MODE) ? 8 : 4;
 177         } else {
 178                 if (agp_status & RADEON_AGP_4X_MODE) {
 179                         default_mode = 4;
 180                 } else if (agp_status & RADEON_AGP_2X_MODE) {
 181                         default_mode = 2;
 182                 } else {
 183                         default_mode = 1;
 184                 }
 185         }
 186
 187         /* Apply AGPMode Quirks */
 188         while (p && p->chip_device != 0) {
 189                 if (info.id_vendor == p->hostbridge_vendor &&
 190                     info.id_device == p->hostbridge_device &&
 191                     rdev->pdev->vendor == p->chip_vendor &&
 192                     rdev->pdev->device == p->chip_device &&
 193                     rdev->pdev->subsystem_vendor == p->subsys_vendor &&
 194                     rdev->pdev->subsystem_device == p->subsys_device) {
 195                         default_mode = p->default_mode;
 196                 }
 197                 ++p;
 198         }
 199
 200         if (radeon_agpmode > 0) {
 201                 if ((radeon_agpmode < (is_v3 ? 4 : 1)) ||
 202                     (radeon_agpmode > (is_v3 ? 8 : 4)) ||
 203                     (radeon_agpmode & (radeon_agpmode - 1))) {
 204                         DRM_ERROR("Illegal AGP Mode: %d (valid %s), leaving at %d\n",
 205                                   radeon_agpmode, is_v3 ? "4, 8" : "1, 2, 4",
 206                                   default_mode);
 207                         radeon_agpmode = default_mode;
 208                 } else {
 209                         DRM_INFO("AGP mode requested: %d\n", radeon_agpmode);
 210                 }
 211         } else {
 212                 radeon_agpmode = default_mode;
 213         }
 214
 215         mode.mode &= ~RADEON_AGP_MODE_MASK;
 216         if (is_v3) {
 217                 switch (radeon_agpmode) {
 218                 case 8:
 219                         mode.mode |= RADEON_AGPv3_8X_MODE;
 220                         break;
 221                 case 4:
 222                 default:
 223                         mode.mode |= RADEON_AGPv3_4X_MODE;
 224                         break;
 225                 }
 226         } else {
 227                 switch (radeon_agpmode) {
 228                 case 4:
 229                         mode.mode |= RADEON_AGP_4X_MODE;
 230                         break;
 231                 case 2:
 232                         mode.mode |= RADEON_AGP_2X_MODE;
 233                         break;
 234                 case 1:
 235                 default:
 236                         mode.mode |= RADEON_AGP_1X_MODE;
 237                         break;
 238                 }
 239         }
 240
 241         mode.mode &= ~RADEON_AGP_FW_MODE; /* disable fw */
 242         ret = drm_agp_enable(rdev->ddev, mode);
 243         if (ret) {
 244                 DRM_ERROR("Unable to enable AGP (mode = 0x%lx)\n", mode.mode);
 245                 drm_agp_release(rdev->ddev);
 246                 return ret;
 247         }
 248
 249         rdev->mc.agp_base = rdev->ddev->agp->agp_info.aper_base;
 250         rdev->mc.gtt_size = rdev->ddev->agp->agp_info.aper_size << 20;
 251         rdev->mc.gtt_start = rdev->mc.agp_base;
 252         rdev->mc.gtt_end = rdev->mc.gtt_start + rdev->mc.gtt_size - 1;
 253         dev_info(rdev->dev, "GTT: %lluM 0x%08llX - 0x%08llX\n",
 254                 rdev->mc.gtt_size >> 20, rdev->mc.gtt_start, rdev->mc.gtt_end);
 255
 256         /* workaround some hw issues */
 257         if (rdev->family < CHIP_R200) {
 258                 WREG32(RADEON_AGP_CNTL, RREG32(RADEON_AGP_CNTL) | 0x000e0000);
 259         }
 260         return 0;
 261 #else
 262         return 0;
 263 #endif
 264 }
 265
 266 void radeon_agp_resume(struct radeon_device *rdev)
 267 {
 268 #if IS_ENABLED(CONFIG_AGP)
 269         int r;
 270         if (rdev->flags & RADEON_IS_AGP) {
 271                 r = radeon_agp_init(rdev);
 272                 if (r)
 273                         dev_warn(rdev->dev, "radeon AGP reinit failed\n");
 274         }
 275 #endif
 276 }
 277
 278 void radeon_agp_fini(struct radeon_device *rdev)
 279 {
 280 #if IS_ENABLED(CONFIG_AGP)
 281         if (rdev->ddev->agp && rdev->ddev->agp->acquired) {
 282                 drm_agp_release(rdev->ddev);
 283         }
 284 #endif
 285 }
 286
 287 void radeon_agp_suspend(struct radeon_device *rdev)
 288 {
 289         radeon_agp_fini(rdev);
 290 }