drivers/gpu/drm/radeon/r420.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 <linux/seq_file.h>
  29 #include "drmP.h"
  30 #include "radeon_reg.h"
  31 #include "radeon.h"
  32 #include "atom.h"
  33 #include "r420d.h"
  34
  35 int r420_mc_init(struct radeon_device *rdev)
  36 {
  37         int r;
  38
  39         /* Setup GPU memory space */
  40         rdev->mc.vram_location = 0xFFFFFFFFUL;
  41         rdev->mc.gtt_location = 0xFFFFFFFFUL;
  42         if (rdev->flags & RADEON_IS_AGP) {
  43                 r = radeon_agp_init(rdev);
  44                 if (r) {
  45                         printk(KERN_WARNING "[drm] Disabling AGP\n");
  46                         rdev->flags &= ~RADEON_IS_AGP;
  47                         rdev->mc.gtt_size = radeon_gart_size * 1024 * 1024;
  48                 } else {
  49                         rdev->mc.gtt_location = rdev->mc.agp_base;
  50                 }
  51         }
  52         r = radeon_mc_setup(rdev);
  53         if (r) {
  54                 return r;
  55         }
  56         return 0;
  57 }
  58
  59 void r420_pipes_init(struct radeon_device *rdev)
  60 {
  61         unsigned tmp;
  62         unsigned gb_pipe_select;
  63         unsigned num_pipes;
  64
  65         /* GA_ENHANCE workaround TCL deadlock issue */
  66         WREG32(0x4274, (1 << 0) | (1 << 1) | (1 << 2) | (1 << 3));
  67         /* add idle wait as per freedesktop.org bug 24041 */
  68         if (r100_gui_wait_for_idle(rdev)) {
  69                 printk(KERN_WARNING "Failed to wait GUI idle while "
  70                        "programming pipes. Bad things might happen.\n");
  71         }
  72         /* get max number of pipes */
  73         gb_pipe_select = RREG32(0x402C);
  74         num_pipes = ((gb_pipe_select >> 12) & 3) + 1;
  75         rdev->num_gb_pipes = num_pipes;
  76         tmp = 0;
  77         switch (num_pipes) {
  78         default:
  79                 /* force to 1 pipe */
  80                 num_pipes = 1;
  81         case 1:
  82                 tmp = (0 << 1);
  83                 break;
  84         case 2:
  85                 tmp = (3 << 1);
  86                 break;
  87         case 3:
  88                 tmp = (6 << 1);
  89                 break;
  90         case 4:
  91                 tmp = (7 << 1);
  92                 break;
  93         }
  94         WREG32(0x42C8, (1 << num_pipes) - 1);
  95         /* Sub pixel 1/12 so we can have 4K rendering according to doc */
  96         tmp |= (1 << 4) | (1 << 0);
  97         WREG32(0x4018, tmp);
  98         if (r100_gui_wait_for_idle(rdev)) {
  99                 printk(KERN_WARNING "Failed to wait GUI idle while "
 100                        "programming pipes. Bad things might happen.\n");
 101         }
 102
 103         tmp = RREG32(0x170C);
 104         WREG32(0x170C, tmp | (1 << 31));
 105
 106         WREG32(R300_RB2D_DSTCACHE_MODE,
 107                RREG32(R300_RB2D_DSTCACHE_MODE) |
 108                R300_DC_AUTOFLUSH_ENABLE |
 109                R300_DC_DC_DISABLE_IGNORE_PE);
 110
 111         if (r100_gui_wait_for_idle(rdev)) {
 112                 printk(KERN_WARNING "Failed to wait GUI idle while "
 113                        "programming pipes. Bad things might happen.\n");
 114         }
 115
 116         if (rdev->family == CHIP_RV530) {
 117                 tmp = RREG32(RV530_GB_PIPE_SELECT2);
 118                 if ((tmp & 3) == 3)
 119                         rdev->num_z_pipes = 2;
 120                 else
 121                         rdev->num_z_pipes = 1;
 122         } else
 123                 rdev->num_z_pipes = 1;
 124
 125         DRM_INFO("radeon: %d quad pipes, %d z pipes initialized.\n",
 126                  rdev->num_gb_pipes, rdev->num_z_pipes);
 127 }
 128
 129 u32 r420_mc_rreg(struct radeon_device *rdev, u32 reg)
 130 {
 131         u32 r;
 132
 133         WREG32(R_0001F8_MC_IND_INDEX, S_0001F8_MC_IND_ADDR(reg));
 134         r = RREG32(R_0001FC_MC_IND_DATA);
 135         return r;
 136 }
 137
 138 void r420_mc_wreg(struct radeon_device *rdev, u32 reg, u32 v)
 139 {
 140         WREG32(R_0001F8_MC_IND_INDEX, S_0001F8_MC_IND_ADDR(reg) |
 141                 S_0001F8_MC_IND_WR_EN(1));
 142         WREG32(R_0001FC_MC_IND_DATA, v);
 143 }
 144
 145 static void r420_debugfs(struct radeon_device *rdev)
 146 {
 147         if (r100_debugfs_rbbm_init(rdev)) {
 148                 DRM_ERROR("Failed to register debugfs file for RBBM !\n");
 149         }
 150         if (r420_debugfs_pipes_info_init(rdev)) {
 151                 DRM_ERROR("Failed to register debugfs file for pipes !\n");
 152         }
 153 }
 154
 155 static void r420_clock_resume(struct radeon_device *rdev)
 156 {
 157         u32 sclk_cntl;
 158
 159         if (radeon_dynclks != -1 && radeon_dynclks)
 160                 radeon_atom_set_clock_gating(rdev, 1);
 161         sclk_cntl = RREG32_PLL(R_00000D_SCLK_CNTL);
 162         sclk_cntl |= S_00000D_FORCE_CP(1) | S_00000D_FORCE_VIP(1);
 163         if (rdev->family == CHIP_R420)
 164                 sclk_cntl |= S_00000D_FORCE_PX(1) | S_00000D_FORCE_TX(1);
 165         WREG32_PLL(R_00000D_SCLK_CNTL, sclk_cntl);
 166 }
 167
 168 static int r420_startup(struct radeon_device *rdev)
 169 {
 170         int r;
 171
 172         r300_mc_program(rdev);
 173         /* Resume clock */
 174         r420_clock_resume(rdev);
 175         /* Initialize GART (initialize after TTM so we can allocate
 176          * memory through TTM but finalize after TTM) */
 177         if (rdev->flags & RADEON_IS_PCIE) {
 178                 r = rv370_pcie_gart_enable(rdev);
 179                 if (r)
 180                         return r;
 181         }
 182         if (rdev->flags & RADEON_IS_PCI) {
 183                 r = r100_pci_gart_enable(rdev);
 184                 if (r)
 185                         return r;
 186         }
 187         r420_pipes_init(rdev);
 188         /* Enable IRQ */
 189         rdev->irq.sw_int = true;
 190         r100_irq_set(rdev);
 191         /* 1M ring buffer */
 192         r = r100_cp_init(rdev, 1024 * 1024);
 193         if (r) {
 194                 dev_err(rdev->dev, "failled initializing CP (%d).\n", r);
 195                 return r;
 196         }
 197         r = r100_wb_init(rdev);
 198         if (r) {
 199                 dev_err(rdev->dev, "failled initializing WB (%d).\n", r);
 200         }
 201         r = r100_ib_init(rdev);
 202         if (r) {
 203                 dev_err(rdev->dev, "failled initializing IB (%d).\n", r);
 204                 return r;
 205         }
 206         return 0;
 207 }
 208
 209 int r420_resume(struct radeon_device *rdev)
 210 {
 211         /* Make sur GART are not working */
 212         if (rdev->flags & RADEON_IS_PCIE)
 213                 rv370_pcie_gart_disable(rdev);
 214         if (rdev->flags & RADEON_IS_PCI)
 215                 r100_pci_gart_disable(rdev);
 216         /* Resume clock before doing reset */
 217         r420_clock_resume(rdev);
 218         /* Reset gpu before posting otherwise ATOM will enter infinite loop */
 219         if (radeon_gpu_reset(rdev)) {
 220                 dev_warn(rdev->dev, "GPU reset failed ! (0xE40=0x%08X, 0x7C0=0x%08X)\n",
 221                         RREG32(R_000E40_RBBM_STATUS),
 222                         RREG32(R_0007C0_CP_STAT));
 223         }
 224         /* check if cards are posted or not */
 225         if (rdev->is_atom_bios) {
 226                 atom_asic_init(rdev->mode_info.atom_context);
 227         } else {
 228                 radeon_combios_asic_init(rdev->ddev);
 229         }
 230         /* Resume clock after posting */
 231         r420_clock_resume(rdev);
 232
 233         return r420_startup(rdev);
 234 }
 235
 236 int r420_suspend(struct radeon_device *rdev)
 237 {
 238         r100_cp_disable(rdev);
 239         r100_wb_disable(rdev);
 240         r100_irq_disable(rdev);
 241         if (rdev->flags & RADEON_IS_PCIE)
 242                 rv370_pcie_gart_disable(rdev);
 243         if (rdev->flags & RADEON_IS_PCI)
 244                 r100_pci_gart_disable(rdev);
 245         return 0;
 246 }
 247
 248 void r420_fini(struct radeon_device *rdev)
 249 {
 250         r100_cp_fini(rdev);
 251         r100_wb_fini(rdev);
 252         r100_ib_fini(rdev);
 253         radeon_gem_fini(rdev);
 254         if (rdev->flags & RADEON_IS_PCIE)
 255                 rv370_pcie_gart_fini(rdev);
 256         if (rdev->flags & RADEON_IS_PCI)
 257                 r100_pci_gart_fini(rdev);
 258         radeon_agp_fini(rdev);
 259         radeon_irq_kms_fini(rdev);
 260         radeon_fence_driver_fini(rdev);
 261         radeon_object_fini(rdev);
 262         if (rdev->is_atom_bios) {
 263                 radeon_atombios_fini(rdev);
 264         } else {
 265                 radeon_combios_fini(rdev);
 266         }
 267         kfree(rdev->bios);
 268         rdev->bios = NULL;
 269 }
 270
 271 int r420_init(struct radeon_device *rdev)
 272 {
 273         int r;
 274
 275         /* Initialize scratch registers */
 276         radeon_scratch_init(rdev);
 277         /* Initialize surface registers */
 278         radeon_surface_init(rdev);
 279         /* TODO: disable VGA need to use VGA request */
 280         /* BIOS*/
 281         if (!radeon_get_bios(rdev)) {
 282                 if (ASIC_IS_AVIVO(rdev))
 283                         return -EINVAL;
 284         }
 285         if (rdev->is_atom_bios) {
 286                 r = radeon_atombios_init(rdev);
 287                 if (r) {
 288                         return r;
 289                 }
 290         } else {
 291                 r = radeon_combios_init(rdev);
 292                 if (r) {
 293                         return r;
 294                 }
 295         }
 296         /* Reset gpu before posting otherwise ATOM will enter infinite loop */
 297         if (radeon_gpu_reset(rdev)) {
 298                 dev_warn(rdev->dev,
 299                         "GPU reset failed ! (0xE40=0x%08X, 0x7C0=0x%08X)\n",
 300                         RREG32(R_000E40_RBBM_STATUS),
 301                         RREG32(R_0007C0_CP_STAT));
 302         }
 303         /* check if cards are posted or not */
 304         if (!radeon_card_posted(rdev) && rdev->bios) {
 305                 DRM_INFO("GPU not posted. posting now...\n");
 306                 if (rdev->is_atom_bios) {
 307                         atom_asic_init(rdev->mode_info.atom_context);
 308                 } else {
 309                         radeon_combios_asic_init(rdev->ddev);
 310                 }
 311         }
 312         /* Initialize clocks */
 313         radeon_get_clock_info(rdev->ddev);
 314         /* Get vram informations */
 315         r300_vram_info(rdev);
 316         /* Initialize memory controller (also test AGP) */
 317         r = r420_mc_init(rdev);
 318         if (r) {
 319                 return r;
 320         }
 321         r420_debugfs(rdev);
 322         /* Fence driver */
 323         r = radeon_fence_driver_init(rdev);
 324         if (r) {
 325                 return r;
 326         }
 327         r = radeon_irq_kms_init(rdev);
 328         if (r) {
 329                 return r;
 330         }
 331         /* Memory manager */
 332         r = radeon_object_init(rdev);
 333         if (r) {
 334                 return r;
 335         }
 336         if (rdev->flags & RADEON_IS_PCIE) {
 337                 r = rv370_pcie_gart_init(rdev);
 338                 if (r)
 339                         return r;
 340         }
 341         if (rdev->flags & RADEON_IS_PCI) {
 342                 r = r100_pci_gart_init(rdev);
 343                 if (r)
 344                         return r;
 345         }
 346         r300_set_reg_safe(rdev);
 347         rdev->accel_working = true;
 348         r = r420_startup(rdev);
 349         if (r) {
 350                 /* Somethings want wront with the accel init stop accel */
 351                 dev_err(rdev->dev, "Disabling GPU acceleration\n");
 352                 r420_suspend(rdev);
 353                 r100_cp_fini(rdev);
 354                 r100_wb_fini(rdev);
 355                 r100_ib_fini(rdev);
 356                 if (rdev->flags & RADEON_IS_PCIE)
 357                         rv370_pcie_gart_fini(rdev);
 358                 if (rdev->flags & RADEON_IS_PCI)
 359                         r100_pci_gart_fini(rdev);
 360                 radeon_agp_fini(rdev);
 361                 radeon_irq_kms_fini(rdev);
 362                 rdev->accel_working = false;
 363         }
 364         return 0;
 365 }
 366
 367 /*
 368  * Debugfs info
 369  */
 370 #if defined(CONFIG_DEBUG_FS)
 371 static int r420_debugfs_pipes_info(struct seq_file *m, void *data)
 372 {
 373         struct drm_info_node *node = (struct drm_info_node *) m->private;
 374         struct drm_device *dev = node->minor->dev;
 375         struct radeon_device *rdev = dev->dev_private;
 376         uint32_t tmp;
 377
 378         tmp = RREG32(R400_GB_PIPE_SELECT);
 379         seq_printf(m, "GB_PIPE_SELECT 0x%08x\n", tmp);
 380         tmp = RREG32(R300_GB_TILE_CONFIG);
 381         seq_printf(m, "GB_TILE_CONFIG 0x%08x\n", tmp);
 382         tmp = RREG32(R300_DST_PIPE_CONFIG);
 383         seq_printf(m, "DST_PIPE_CONFIG 0x%08x\n", tmp);
 384         return 0;
 385 }
 386
 387 static struct drm_info_list r420_pipes_info_list[] = {
 388         {"r420_pipes_info", r420_debugfs_pipes_info, 0, NULL},
 389 };
 390 #endif
 391
 392 int r420_debugfs_pipes_info_init(struct radeon_device *rdev)
 393 {
 394 #if defined(CONFIG_DEBUG_FS)
 395         return radeon_debugfs_add_files(rdev, r420_pipes_info_list, 1);
 396 #else
 397         return 0;
 398 #endif
 399 }