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.h"
  30 #include "radeon_asic.h"
  31 #include "atom.h"
  32 #include "r520d.h"
  33
  34 /* This files gather functions specifics to: r520,rv530,rv560,rv570,r580 */
  35
  36 static int r520_mc_wait_for_idle(struct radeon_device *rdev)
  37 {
  38         unsigned i;
  39         uint32_t tmp;
  40
  41         for (i = 0; i < rdev->usec_timeout; i++) {
  42                 /* read MC_STATUS */
  43                 tmp = RREG32_MC(R520_MC_STATUS);
  44                 if (tmp & R520_MC_STATUS_IDLE) {
  45                         return 0;
  46                 }
  47                 DRM_UDELAY(1);
  48         }
  49         return -1;
  50 }
  51
  52 static void r520_gpu_init(struct radeon_device *rdev)
  53 {
  54         unsigned pipe_select_current, gb_pipe_select, tmp;
  55
  56         r100_hdp_reset(rdev);
  57         rv515_vga_render_disable(rdev);
  58         /*
  59          * DST_PIPE_CONFIG              0x170C
  60          * GB_TILE_CONFIG               0x4018
  61          * GB_FIFO_SIZE                 0x4024
  62          * GB_PIPE_SELECT               0x402C
  63          * GB_PIPE_SELECT2              0x4124
  64          *      Z_PIPE_SHIFT                    0
  65          *      Z_PIPE_MASK                     0x000000003
  66          * GB_FIFO_SIZE2                0x4128
  67          *      SC_SFIFO_SIZE_SHIFT             0
  68          *      SC_SFIFO_SIZE_MASK              0x000000003
  69          *      SC_MFIFO_SIZE_SHIFT             2
  70          *      SC_MFIFO_SIZE_MASK              0x00000000C
  71          *      FG_SFIFO_SIZE_SHIFT             4
  72          *      FG_SFIFO_SIZE_MASK              0x000000030
  73          *      ZB_MFIFO_SIZE_SHIFT             6
  74          *      ZB_MFIFO_SIZE_MASK              0x0000000C0
  75          * GA_ENHANCE                   0x4274
  76          * SU_REG_DEST                  0x42C8
  77          */
  78         /* workaround for RV530 */
  79         if (rdev->family == CHIP_RV530) {
  80                 WREG32(0x4128, 0xFF);
  81         }
  82         r420_pipes_init(rdev);
  83         gb_pipe_select = RREG32(0x402C);
  84         tmp = RREG32(0x170C);
  85         pipe_select_current = (tmp >> 2) & 3;
  86         tmp = (1 << pipe_select_current) |
  87               (((gb_pipe_select >> 8) & 0xF) << 4);
  88         WREG32_PLL(0x000D, tmp);
  89         if (r520_mc_wait_for_idle(rdev)) {
  90                 printk(KERN_WARNING "Failed to wait MC idle while "
  91                        "programming pipes. Bad things might happen.\n");
  92         }
  93 }
  94
  95 static void r520_vram_get_type(struct radeon_device *rdev)
  96 {
  97         uint32_t tmp;
  98
  99         rdev->mc.vram_width = 128;
 100         rdev->mc.vram_is_ddr = true;
 101         tmp = RREG32_MC(R520_MC_CNTL0);
 102         switch ((tmp & R520_MEM_NUM_CHANNELS_MASK) >> R520_MEM_NUM_CHANNELS_SHIFT) {
 103         case 0:
 104                 rdev->mc.vram_width = 32;
 105                 break;
 106         case 1:
 107                 rdev->mc.vram_width = 64;
 108                 break;
 109         case 2:
 110                 rdev->mc.vram_width = 128;
 111                 break;
 112         case 3:
 113                 rdev->mc.vram_width = 256;
 114                 break;
 115         default:
 116                 rdev->mc.vram_width = 128;
 117                 break;
 118         }
 119         if (tmp & R520_MC_CHANNEL_SIZE)
 120                 rdev->mc.vram_width *= 2;
 121 }
 122
 123 void r520_mc_init(struct radeon_device *rdev)
 124 {
 125
 126         r520_vram_get_type(rdev);
 127         r100_vram_init_sizes(rdev);
 128         radeon_vram_location(rdev, &rdev->mc, 0);
 129         if (!(rdev->flags & RADEON_IS_AGP))
 130                 radeon_gtt_location(rdev, &rdev->mc);
 131         radeon_update_bandwidth_info(rdev);
 132 }
 133
 134 void r520_mc_program(struct radeon_device *rdev)
 135 {
 136         struct rv515_mc_save save;
 137
 138         /* Stops all mc clients */
 139         rv515_mc_stop(rdev, &save);
 140
 141         /* Wait for mc idle */
 142         if (r520_mc_wait_for_idle(rdev))
 143                 dev_warn(rdev->dev, "Wait MC idle timeout before updating MC.\n");
 144         /* Write VRAM size in case we are limiting it */
 145         WREG32(R_0000F8_CONFIG_MEMSIZE, rdev->mc.real_vram_size);
 146         /* Program MC, should be a 32bits limited address space */
 147         WREG32_MC(R_000004_MC_FB_LOCATION,
 148                         S_000004_MC_FB_START(rdev->mc.vram_start >> 16) |
 149                         S_000004_MC_FB_TOP(rdev->mc.vram_end >> 16));
 150         WREG32(R_000134_HDP_FB_LOCATION,
 151                 S_000134_HDP_FB_START(rdev->mc.vram_start >> 16));
 152         if (rdev->flags & RADEON_IS_AGP) {
 153                 WREG32_MC(R_000005_MC_AGP_LOCATION,
 154                         S_000005_MC_AGP_START(rdev->mc.gtt_start >> 16) |
 155                         S_000005_MC_AGP_TOP(rdev->mc.gtt_end >> 16));
 156                 WREG32_MC(R_000006_AGP_BASE, lower_32_bits(rdev->mc.agp_base));
 157                 WREG32_MC(R_000007_AGP_BASE_2,
 158                         S_000007_AGP_BASE_ADDR_2(upper_32_bits(rdev->mc.agp_base)));
 159         } else {
 160                 WREG32_MC(R_000005_MC_AGP_LOCATION, 0xFFFFFFFF);
 161                 WREG32_MC(R_000006_AGP_BASE, 0);
 162                 WREG32_MC(R_000007_AGP_BASE_2, 0);
 163         }
 164
 165         rv515_mc_resume(rdev, &save);
 166 }
 167
 168 static int r520_startup(struct radeon_device *rdev)
 169 {
 170         int r;
 171
 172         r520_mc_program(rdev);
 173         /* Resume clock */
 174         rv515_clock_startup(rdev);
 175         /* Initialize GPU configuration (# pipes, ...) */
 176         r520_gpu_init(rdev);
 177         /* Initialize GART (initialize after TTM so we can allocate
 178          * memory through TTM but finalize after TTM) */
 179         if (rdev->flags & RADEON_IS_PCIE) {
 180                 r = rv370_pcie_gart_enable(rdev);
 181                 if (r)
 182                         return r;
 183         }
 184         /* Enable IRQ */
 185         rs600_irq_set(rdev);
 186         rdev->config.r300.hdp_cntl = RREG32(RADEON_HOST_PATH_CNTL);
 187         /* 1M ring buffer */
 188         r = r100_cp_init(rdev, 1024 * 1024);
 189         if (r) {
 190                 dev_err(rdev->dev, "failled initializing CP (%d).\n", r);
 191                 return r;
 192         }
 193         r = r100_wb_init(rdev);
 194         if (r)
 195                 dev_err(rdev->dev, "failled initializing WB (%d).\n", r);
 196         r = r100_ib_init(rdev);
 197         if (r) {
 198                 dev_err(rdev->dev, "failled initializing IB (%d).\n", r);
 199                 return r;
 200         }
 201         return 0;
 202 }
 203
 204 int r520_resume(struct radeon_device *rdev)
 205 {
 206         /* Make sur GART are not working */
 207         if (rdev->flags & RADEON_IS_PCIE)
 208                 rv370_pcie_gart_disable(rdev);
 209         /* Resume clock before doing reset */
 210         rv515_clock_startup(rdev);
 211         /* Reset gpu before posting otherwise ATOM will enter infinite loop */
 212         if (radeon_gpu_reset(rdev)) {
 213                 dev_warn(rdev->dev, "GPU reset failed ! (0xE40=0x%08X, 0x7C0=0x%08X)\n",
 214                         RREG32(R_000E40_RBBM_STATUS),
 215                         RREG32(R_0007C0_CP_STAT));
 216         }
 217         /* post */
 218         atom_asic_init(rdev->mode_info.atom_context);
 219         /* Resume clock after posting */
 220         rv515_clock_startup(rdev);
 221         /* Initialize surface registers */
 222         radeon_surface_init(rdev);
 223         return r520_startup(rdev);
 224 }
 225
 226 int r520_init(struct radeon_device *rdev)
 227 {
 228         int r;
 229
 230         /* Initialize scratch registers */
 231         radeon_scratch_init(rdev);
 232         /* Initialize surface registers */
 233         radeon_surface_init(rdev);
 234         /* TODO: disable VGA need to use VGA request */
 235         /* BIOS*/
 236         if (!radeon_get_bios(rdev)) {
 237                 if (ASIC_IS_AVIVO(rdev))
 238                         return -EINVAL;
 239         }
 240         if (rdev->is_atom_bios) {
 241                 r = radeon_atombios_init(rdev);
 242                 if (r)
 243                         return r;
 244         } else {
 245                 dev_err(rdev->dev, "Expecting atombios for RV515 GPU\n");
 246                 return -EINVAL;
 247         }
 248         /* Reset gpu before posting otherwise ATOM will enter infinite loop */
 249         if (radeon_gpu_reset(rdev)) {
 250                 dev_warn(rdev->dev,
 251                         "GPU reset failed ! (0xE40=0x%08X, 0x7C0=0x%08X)\n",
 252                         RREG32(R_000E40_RBBM_STATUS),
 253                         RREG32(R_0007C0_CP_STAT));
 254         }
 255         /* check if cards are posted or not */
 256         if (radeon_boot_test_post_card(rdev) == false)
 257                 return -EINVAL;
 258
 259         if (!radeon_card_posted(rdev) && rdev->bios) {
 260                 DRM_INFO("GPU not posted. posting now...\n");
 261                 atom_asic_init(rdev->mode_info.atom_context);
 262         }
 263         /* Initialize clocks */
 264         radeon_get_clock_info(rdev->ddev);
 265         /* Initialize power management */
 266         radeon_pm_init(rdev);
 267         /* initialize AGP */
 268         if (rdev->flags & RADEON_IS_AGP) {
 269                 r = radeon_agp_init(rdev);
 270                 if (r) {
 271                         radeon_agp_disable(rdev);
 272                 }
 273         }
 274         /* initialize memory controller */
 275         r520_mc_init(rdev);
 276         rv515_debugfs(rdev);
 277         /* Fence driver */
 278         r = radeon_fence_driver_init(rdev);
 279         if (r)
 280                 return r;
 281         r = radeon_irq_kms_init(rdev);
 282         if (r)
 283                 return r;
 284         /* Memory manager */
 285         r = radeon_bo_init(rdev);
 286         if (r)
 287                 return r;
 288         r = rv370_pcie_gart_init(rdev);
 289         if (r)
 290                 return r;
 291         rv515_set_safe_registers(rdev);
 292         rdev->accel_working = true;
 293         r = r520_startup(rdev);
 294         if (r) {
 295                 /* Somethings want wront with the accel init stop accel */
 296                 dev_err(rdev->dev, "Disabling GPU acceleration\n");
 297                 r100_cp_fini(rdev);
 298                 r100_wb_fini(rdev);
 299                 r100_ib_fini(rdev);
 300                 radeon_irq_kms_fini(rdev);
 301                 rv370_pcie_gart_fini(rdev);
 302                 radeon_agp_fini(rdev);
 303                 rdev->accel_working = false;
 304         }
 305         return 0;
 306 }