drivers/gpu/drm/radeon/r520.c

   1 /*
   2  * Copyright 2008 Advanced Micro Devices, Inc.
   3  * Copyright 2008 Red Hat Inc.
   4  * Copyright 2009 Jerome Glisse.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the "Software"),
   8  * to deal in the Software without restriction, including without limitation
   9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  10  * and/or sell copies of the Software, and to permit persons to whom the
  11  * Software is furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  19  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  22  * OTHER DEALINGS IN THE SOFTWARE.
  23  *
  24  * Authors: Dave Airlie
  25  *          Alex Deucher
  26  *          Jerome Glisse
  27  */
  28 #include "drmP.h"
  29 #include "radeon_reg.h"
  30 #include "radeon.h"
  31
  32 /* r520,rv530,rv560,rv570,r580 depends on : */
  33 void r100_hdp_reset(struct radeon_device *rdev);
  34 int rv370_pcie_gart_enable(struct radeon_device *rdev);
  35 void rv370_pcie_gart_disable(struct radeon_device *rdev);
  36 void r420_pipes_init(struct radeon_device *rdev);
  37 void rs600_mc_disable_clients(struct radeon_device *rdev);
  38 void rs600_disable_vga(struct radeon_device *rdev);
  39 int rv515_debugfs_pipes_info_init(struct radeon_device *rdev);
  40 int rv515_debugfs_ga_info_init(struct radeon_device *rdev);
  41
  42 /* This files gather functions specifics to:
  43  * r520,rv530,rv560,rv570,r580
  44  *
  45  * Some of these functions might be used by newer ASICs.
  46  */
  47 void r520_gpu_init(struct radeon_device *rdev);
  48 int r520_mc_wait_for_idle(struct radeon_device *rdev);
  49
  50
  51 /*
  52  * MC
  53  */
  54 int r520_mc_init(struct radeon_device *rdev)
  55 {
  56         uint32_t tmp;
  57         int r;
  58
  59         if (r100_debugfs_rbbm_init(rdev)) {
  60                 DRM_ERROR("Failed to register debugfs file for RBBM !\n");
  61         }
  62         if (rv515_debugfs_pipes_info_init(rdev)) {
  63                 DRM_ERROR("Failed to register debugfs file for pipes !\n");
  64         }
  65         if (rv515_debugfs_ga_info_init(rdev)) {
  66                 DRM_ERROR("Failed to register debugfs file for pipes !\n");
  67         }
  68
  69         r520_gpu_init(rdev);
  70         rv370_pcie_gart_disable(rdev);
  71
  72         /* Setup GPU memory space */
  73         rdev->mc.vram_location = 0xFFFFFFFFUL;
  74         rdev->mc.gtt_location = 0xFFFFFFFFUL;
  75         if (rdev->flags & RADEON_IS_AGP) {
  76                 r = radeon_agp_init(rdev);
  77                 if (r) {
  78                         printk(KERN_WARNING "[drm] Disabling AGP\n");
  79                         rdev->flags &= ~RADEON_IS_AGP;
  80                         rdev->mc.gtt_size = radeon_gart_size * 1024 * 1024;
  81                 } else {
  82                         rdev->mc.gtt_location = rdev->mc.agp_base;
  83                 }
  84         }
  85         r = radeon_mc_setup(rdev);
  86         if (r) {
  87                 return r;
  88         }
  89
  90         /* Program GPU memory space */
  91         rs600_mc_disable_clients(rdev);
  92         if (r520_mc_wait_for_idle(rdev)) {
  93                 printk(KERN_WARNING "Failed to wait MC idle while "
  94                        "programming pipes. Bad things might happen.\n");
  95         }
  96         /* Write VRAM size in case we are limiting it */
  97         WREG32(RADEON_CONFIG_MEMSIZE, rdev->mc.vram_size);
  98         tmp = rdev->mc.vram_location + rdev->mc.vram_size - 1;
  99         tmp = REG_SET(R520_MC_FB_TOP, tmp >> 16);
 100         tmp |= REG_SET(R520_MC_FB_START, rdev->mc.vram_location >> 16);
 101         WREG32_MC(R520_MC_FB_LOCATION, tmp);
 102         WREG32(RS690_HDP_FB_LOCATION, rdev->mc.vram_location >> 16);
 103         WREG32(0x310, rdev->mc.vram_location);
 104         if (rdev->flags & RADEON_IS_AGP) {
 105                 tmp = rdev->mc.gtt_location + rdev->mc.gtt_size - 1;
 106                 tmp = REG_SET(R520_MC_AGP_TOP, tmp >> 16);
 107                 tmp |= REG_SET(R520_MC_AGP_START, rdev->mc.gtt_location >> 16);
 108                 WREG32_MC(R520_MC_AGP_LOCATION, tmp);
 109                 WREG32_MC(R520_MC_AGP_BASE, rdev->mc.agp_base);
 110                 WREG32_MC(R520_MC_AGP_BASE_2, 0);
 111         } else {
 112                 WREG32_MC(R520_MC_AGP_LOCATION, 0x0FFFFFFF);
 113                 WREG32_MC(R520_MC_AGP_BASE, 0);
 114                 WREG32_MC(R520_MC_AGP_BASE_2, 0);
 115         }
 116         return 0;
 117 }
 118
 119 void r520_mc_fini(struct radeon_device *rdev)
 120 {
 121         rv370_pcie_gart_disable(rdev);
 122         radeon_gart_table_vram_free(rdev);
 123         radeon_gart_fini(rdev);
 124 }
 125
 126
 127 /*
 128  * Global GPU functions
 129  */
 130 void r520_errata(struct radeon_device *rdev)
 131 {
 132         rdev->pll_errata = 0;
 133 }
 134
 135 int r520_mc_wait_for_idle(struct radeon_device *rdev)
 136 {
 137         unsigned i;
 138         uint32_t tmp;
 139
 140         for (i = 0; i < rdev->usec_timeout; i++) {
 141                 /* read MC_STATUS */
 142                 tmp = RREG32_MC(R520_MC_STATUS);
 143                 if (tmp & R520_MC_STATUS_IDLE) {
 144                         return 0;
 145                 }
 146                 DRM_UDELAY(1);
 147         }
 148         return -1;
 149 }
 150
 151 void r520_gpu_init(struct radeon_device *rdev)
 152 {
 153         unsigned pipe_select_current, gb_pipe_select, tmp;
 154
 155         r100_hdp_reset(rdev);
 156         rs600_disable_vga(rdev);
 157         /*
 158          * DST_PIPE_CONFIG              0x170C
 159          * GB_TILE_CONFIG               0x4018
 160          * GB_FIFO_SIZE                 0x4024
 161          * GB_PIPE_SELECT               0x402C
 162          * GB_PIPE_SELECT2              0x4124
 163          *      Z_PIPE_SHIFT                    0
 164          *      Z_PIPE_MASK                     0x000000003
 165          * GB_FIFO_SIZE2                0x4128
 166          *      SC_SFIFO_SIZE_SHIFT             0
 167          *      SC_SFIFO_SIZE_MASK              0x000000003
 168          *      SC_MFIFO_SIZE_SHIFT             2
 169          *      SC_MFIFO_SIZE_MASK              0x00000000C
 170          *      FG_SFIFO_SIZE_SHIFT             4
 171          *      FG_SFIFO_SIZE_MASK              0x000000030
 172          *      ZB_MFIFO_SIZE_SHIFT             6
 173          *      ZB_MFIFO_SIZE_MASK              0x0000000C0
 174          * GA_ENHANCE                   0x4274
 175          * SU_REG_DEST                  0x42C8
 176          */
 177         /* workaround for RV530 */
 178         if (rdev->family == CHIP_RV530) {
 179                 WREG32(0x4124, 1);
 180                 WREG32(0x4128, 0xFF);
 181         }
 182         r420_pipes_init(rdev);
 183         gb_pipe_select = RREG32(0x402C);
 184         tmp = RREG32(0x170C);
 185         pipe_select_current = (tmp >> 2) & 3;
 186         tmp = (1 << pipe_select_current) |
 187               (((gb_pipe_select >> 8) & 0xF) << 4);
 188         WREG32_PLL(0x000D, tmp);
 189         if (r520_mc_wait_for_idle(rdev)) {
 190                 printk(KERN_WARNING "Failed to wait MC idle while "
 191                        "programming pipes. Bad things might happen.\n");
 192         }
 193 }
 194
 195
 196 /*
 197  * VRAM info
 198  */
 199 static void r520_vram_get_type(struct radeon_device *rdev)
 200 {
 201         uint32_t tmp;
 202
 203         rdev->mc.vram_width = 128;
 204         rdev->mc.vram_is_ddr = true;
 205         tmp = RREG32_MC(R520_MC_CNTL0);
 206         switch ((tmp & R520_MEM_NUM_CHANNELS_MASK) >> R520_MEM_NUM_CHANNELS_SHIFT) {
 207         case 0:
 208                 rdev->mc.vram_width = 32;
 209                 break;
 210         case 1:
 211                 rdev->mc.vram_width = 64;
 212                 break;
 213         case 2:
 214                 rdev->mc.vram_width = 128;
 215                 break;
 216         case 3:
 217                 rdev->mc.vram_width = 256;
 218                 break;
 219         default:
 220                 rdev->mc.vram_width = 128;
 221                 break;
 222         }
 223         if (tmp & R520_MC_CHANNEL_SIZE)
 224                 rdev->mc.vram_width *= 2;
 225 }
 226
 227 void r520_vram_info(struct radeon_device *rdev)
 228 {
 229         r520_vram_get_type(rdev);
 230         rdev->mc.vram_size = RREG32(RADEON_CONFIG_MEMSIZE);
 231
 232         rdev->mc.aper_base = drm_get_resource_start(rdev->ddev, 0);
 233         rdev->mc.aper_size = drm_get_resource_len(rdev->ddev, 0);
 234 }