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