drivers/gpu/drm/radeon/rs600.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 /* RS600 / Radeon X1250/X1270 integrated GPU
  29  *
  30  * This file gather function specific to RS600 which is the IGP of
  31  * the X1250/X1270 family supporting intel CPU (while RS690/RS740
  32  * is the X1250/X1270 supporting AMD CPU). The display engine are
  33  * the avivo one, bios is an atombios, 3D block are the one of the
  34  * R4XX family. The GART is different from the RS400 one and is very
  35  * close to the one of the R600 family (R600 likely being an evolution
  36  * of the RS600 GART block).
  37  */
  38 #include "drmP.h"
  39 #include "radeon.h"
  40 #include "atom.h"
  41 #include "rs600d.h"
  42
  43 #include "rs600_reg_safe.h"
  44
  45 void rs600_gpu_init(struct radeon_device *rdev);
  46 int rs600_mc_wait_for_idle(struct radeon_device *rdev);
  47
  48 /*
  49  * GART.
  50  */
  51 void rs600_gart_tlb_flush(struct radeon_device *rdev)
  52 {
  53         uint32_t tmp;
  54
  55         tmp = RREG32_MC(R_000100_MC_PT0_CNTL);
  56         tmp &= C_000100_INVALIDATE_ALL_L1_TLBS & C_000100_INVALIDATE_L2_CACHE;
  57         WREG32_MC(R_000100_MC_PT0_CNTL, tmp);
  58
  59         tmp = RREG32_MC(R_000100_MC_PT0_CNTL);
  60         tmp |= S_000100_INVALIDATE_ALL_L1_TLBS(1) & S_000100_INVALIDATE_L2_CACHE(1);
  61         WREG32_MC(R_000100_MC_PT0_CNTL, tmp);
  62
  63         tmp = RREG32_MC(R_000100_MC_PT0_CNTL);
  64         tmp &= C_000100_INVALIDATE_ALL_L1_TLBS & C_000100_INVALIDATE_L2_CACHE;
  65         WREG32_MC(R_000100_MC_PT0_CNTL, tmp);
  66         tmp = RREG32_MC(R_000100_MC_PT0_CNTL);
  67 }
  68
  69 int rs600_gart_init(struct radeon_device *rdev)
  70 {
  71         int r;
  72
  73         if (rdev->gart.table.vram.robj) {
  74                 WARN(1, "RS600 GART already initialized.\n");
  75                 return 0;
  76         }
  77         /* Initialize common gart structure */
  78         r = radeon_gart_init(rdev);
  79         if (r) {
  80                 return r;
  81         }
  82         rdev->gart.table_size = rdev->gart.num_gpu_pages * 8;
  83         return radeon_gart_table_vram_alloc(rdev);
  84 }
  85
  86 int rs600_gart_enable(struct radeon_device *rdev)
  87 {
  88         u32 tmp;
  89         int r, i;
  90
  91         if (rdev->gart.table.vram.robj == NULL) {
  92                 dev_err(rdev->dev, "No VRAM object for PCIE GART.\n");
  93                 return -EINVAL;
  94         }
  95         r = radeon_gart_table_vram_pin(rdev);
  96         if (r)
  97                 return r;
  98         /* Enable bus master */
  99         tmp = RREG32(R_00004C_BUS_CNTL) & C_00004C_BUS_MASTER_DIS;
 100         WREG32(R_00004C_BUS_CNTL, tmp);
 101         /* FIXME: setup default page */
 102         WREG32_MC(R_000100_MC_PT0_CNTL,
 103                  (S_000100_EFFECTIVE_L2_CACHE_SIZE(6) |
 104                   S_000100_EFFECTIVE_L2_QUEUE_SIZE(6)));
 105         for (i = 0; i < 19; i++) {
 106                 WREG32_MC(R_00016C_MC_PT0_CLIENT0_CNTL + i,
 107                         S_00016C_ENABLE_TRANSLATION_MODE_OVERRIDE(1) |
 108                         S_00016C_SYSTEM_ACCESS_MODE_MASK(
 109                                 V_00016C_SYSTEM_ACCESS_MODE_IN_SYS) |
 110                         S_00016C_SYSTEM_APERTURE_UNMAPPED_ACCESS(
 111                                 V_00016C_SYSTEM_APERTURE_UNMAPPED_DEFAULT_PAGE) |
 112                         S_00016C_EFFECTIVE_L1_CACHE_SIZE(1) |
 113                         S_00016C_ENABLE_FRAGMENT_PROCESSING(1) |
 114                         S_00016C_EFFECTIVE_L1_QUEUE_SIZE(1));
 115         }
 116
 117         /* System context map to GART space */
 118         WREG32_MC(R_000112_MC_PT0_SYSTEM_APERTURE_LOW_ADDR, rdev->mc.gtt_start);
 119         WREG32_MC(R_000114_MC_PT0_SYSTEM_APERTURE_HIGH_ADDR, rdev->mc.gtt_end);
 120
 121         /* enable first context */
 122         WREG32_MC(R_00013C_MC_PT0_CONTEXT0_FLAT_START_ADDR, rdev->mc.gtt_start);
 123         WREG32_MC(R_00014C_MC_PT0_CONTEXT0_FLAT_END_ADDR, rdev->mc.gtt_end);
 124         WREG32_MC(R_000102_MC_PT0_CONTEXT0_CNTL,
 125                         S_000102_ENABLE_PAGE_TABLE(1) |
 126                         S_000102_PAGE_TABLE_DEPTH(V_000102_PAGE_TABLE_FLAT));
 127         /* disable all other contexts */
 128         for (i = 1; i < 8; i++) {
 129                 WREG32_MC(R_000102_MC_PT0_CONTEXT0_CNTL + i, 0);
 130         }
 131
 132         /* setup the page table */
 133         WREG32_MC(R_00012C_MC_PT0_CONTEXT0_FLAT_BASE_ADDR,
 134                         rdev->gart.table_addr);
 135         WREG32_MC(R_00011C_MC_PT0_CONTEXT0_DEFAULT_READ_ADDR, 0);
 136
 137         /* enable page tables */
 138         tmp = RREG32_MC(R_000100_MC_PT0_CNTL);
 139         WREG32_MC(R_000100_MC_PT0_CNTL, (tmp | S_000100_ENABLE_PT(1)));
 140         tmp = RREG32_MC(R_000009_MC_CNTL1);
 141         WREG32_MC(R_000009_MC_CNTL1, (tmp | S_000009_ENABLE_PAGE_TABLES(1)));
 142         rs600_gart_tlb_flush(rdev);
 143         rdev->gart.ready = true;
 144         return 0;
 145 }
 146
 147 void rs600_gart_disable(struct radeon_device *rdev)
 148 {
 149         uint32_t tmp;
 150
 151         /* FIXME: disable out of gart access */
 152         WREG32_MC(R_000100_MC_PT0_CNTL, 0);
 153         tmp = RREG32_MC(R_000009_MC_CNTL1);
 154         WREG32_MC(R_000009_MC_CNTL1, tmp & C_000009_ENABLE_PAGE_TABLES);
 155         if (rdev->gart.table.vram.robj) {
 156                 radeon_object_kunmap(rdev->gart.table.vram.robj);
 157                 radeon_object_unpin(rdev->gart.table.vram.robj);
 158         }
 159 }
 160
 161 void rs600_gart_fini(struct radeon_device *rdev)
 162 {
 163         rs600_gart_disable(rdev);
 164         radeon_gart_table_vram_free(rdev);
 165         radeon_gart_fini(rdev);
 166 }
 167
 168 #define R600_PTE_VALID     (1 << 0)
 169 #define R600_PTE_SYSTEM    (1 << 1)
 170 #define R600_PTE_SNOOPED   (1 << 2)
 171 #define R600_PTE_READABLE  (1 << 5)
 172 #define R600_PTE_WRITEABLE (1 << 6)
 173
 174 int rs600_gart_set_page(struct radeon_device *rdev, int i, uint64_t addr)
 175 {
 176         void __iomem *ptr = (void *)rdev->gart.table.vram.ptr;
 177
 178         if (i < 0 || i > rdev->gart.num_gpu_pages) {
 179                 return -EINVAL;
 180         }
 181         addr = addr & 0xFFFFFFFFFFFFF000ULL;
 182         addr |= R600_PTE_VALID | R600_PTE_SYSTEM | R600_PTE_SNOOPED;
 183         addr |= R600_PTE_READABLE | R600_PTE_WRITEABLE;
 184         writeq(addr, ((void __iomem *)ptr) + (i * 8));
 185         return 0;
 186 }
 187
 188 int rs600_irq_set(struct radeon_device *rdev)
 189 {
 190         uint32_t tmp = 0;
 191         uint32_t mode_int = 0;
 192
 193         if (rdev->irq.sw_int) {
 194                 tmp |= S_000040_SW_INT_EN(1);
 195         }
 196         if (rdev->irq.crtc_vblank_int[0]) {
 197                 mode_int |= S_006540_D1MODE_VBLANK_INT_MASK(1);
 198         }
 199         if (rdev->irq.crtc_vblank_int[1]) {
 200                 mode_int |= S_006540_D2MODE_VBLANK_INT_MASK(1);
 201         }
 202         WREG32(R_000040_GEN_INT_CNTL, tmp);
 203         WREG32(R_006540_DxMODE_INT_MASK, mode_int);
 204         return 0;
 205 }
 206
 207 static inline uint32_t rs600_irq_ack(struct radeon_device *rdev, u32 *r500_disp_int)
 208 {
 209         uint32_t irqs = RREG32(R_000044_GEN_INT_STATUS);
 210         uint32_t irq_mask = ~C_000044_SW_INT;
 211
 212         if (G_000044_DISPLAY_INT_STAT(irqs)) {
 213                 *r500_disp_int = RREG32(R_007EDC_DISP_INTERRUPT_STATUS);
 214                 if (G_007EDC_LB_D1_VBLANK_INTERRUPT(*r500_disp_int)) {
 215                         WREG32(R_006534_D1MODE_VBLANK_STATUS,
 216                                 S_006534_D1MODE_VBLANK_ACK(1));
 217                 }
 218                 if (G_007EDC_LB_D2_VBLANK_INTERRUPT(*r500_disp_int)) {
 219                         WREG32(R_006D34_D2MODE_VBLANK_STATUS,
 220                                 S_006D34_D2MODE_VBLANK_ACK(1));
 221                 }
 222         } else {
 223                 *r500_disp_int = 0;
 224         }
 225
 226         if (irqs) {
 227                 WREG32(R_000044_GEN_INT_STATUS, irqs);
 228         }
 229         return irqs & irq_mask;
 230 }
 231
 232 void rs600_irq_disable(struct radeon_device *rdev)
 233 {
 234         u32 tmp;
 235
 236         WREG32(R_000040_GEN_INT_CNTL, 0);
 237         WREG32(R_006540_DxMODE_INT_MASK, 0);
 238         /* Wait and acknowledge irq */
 239         mdelay(1);
 240         rs600_irq_ack(rdev, &tmp);
 241 }
 242
 243 int rs600_irq_process(struct radeon_device *rdev)
 244 {
 245         uint32_t status, msi_rearm;
 246         uint32_t r500_disp_int;
 247
 248         status = rs600_irq_ack(rdev, &r500_disp_int);
 249         if (!status && !r500_disp_int) {
 250                 return IRQ_NONE;
 251         }
 252         while (status || r500_disp_int) {
 253                 /* SW interrupt */
 254                 if (G_000040_SW_INT_EN(status))
 255                         radeon_fence_process(rdev);
 256                 /* Vertical blank interrupts */
 257                 if (G_007EDC_LB_D1_VBLANK_INTERRUPT(r500_disp_int))
 258                         drm_handle_vblank(rdev->ddev, 0);
 259                 if (G_007EDC_LB_D2_VBLANK_INTERRUPT(r500_disp_int))
 260                         drm_handle_vblank(rdev->ddev, 1);
 261                 status = rs600_irq_ack(rdev, &r500_disp_int);
 262         }
 263         if (rdev->msi_enabled) {
 264                 switch (rdev->family) {
 265                 case CHIP_RS600:
 266                 case CHIP_RS690:
 267                 case CHIP_RS740:
 268                         msi_rearm = RREG32(RADEON_BUS_CNTL) & ~RS600_MSI_REARM;
 269                         WREG32(RADEON_BUS_CNTL, msi_rearm);
 270                         WREG32(RADEON_BUS_CNTL, msi_rearm | RS600_MSI_REARM);
 271                         break;
 272                 default:
 273                         msi_rearm = RREG32(RADEON_MSI_REARM_EN) & ~RV370_MSI_REARM_EN;
 274                         WREG32(RADEON_MSI_REARM_EN, msi_rearm);
 275                         WREG32(RADEON_MSI_REARM_EN, msi_rearm | RV370_MSI_REARM_EN);
 276                         break;
 277                 }
 278         }
 279         return IRQ_HANDLED;
 280 }
 281
 282 u32 rs600_get_vblank_counter(struct radeon_device *rdev, int crtc)
 283 {
 284         if (crtc == 0)
 285                 return RREG32(R_0060A4_D1CRTC_STATUS_FRAME_COUNT);
 286         else
 287                 return RREG32(R_0068A4_D2CRTC_STATUS_FRAME_COUNT);
 288 }
 289
 290 int rs600_mc_wait_for_idle(struct radeon_device *rdev)
 291 {
 292         unsigned i;
 293
 294         for (i = 0; i < rdev->usec_timeout; i++) {
 295                 if (G_000000_MC_IDLE(RREG32_MC(R_000000_MC_STATUS)))
 296                         return 0;
 297                 udelay(1);
 298         }
 299         return -1;
 300 }
 301
 302 void rs600_gpu_init(struct radeon_device *rdev)
 303 {
 304         /* FIXME: HDP same place on rs600 ? */
 305         r100_hdp_reset(rdev);
 306         /* FIXME: is this correct ? */
 307         r420_pipes_init(rdev);
 308         /* Wait for mc idle */
 309         if (rs600_mc_wait_for_idle(rdev))
 310                 dev_warn(rdev->dev, "Wait MC idle timeout before updating MC.\n");
 311 }
 312
 313 void rs600_vram_info(struct radeon_device *rdev)
 314 {
 315         /* FIXME: to do or is these values sane ? */
 316         rdev->mc.vram_is_ddr = true;
 317         rdev->mc.vram_width = 128;
 318 }
 319
 320 void rs600_bandwidth_update(struct radeon_device *rdev)
 321 {
 322         /* FIXME: implement, should this be like rs690 ? */
 323 }
 324
 325 uint32_t rs600_mc_rreg(struct radeon_device *rdev, uint32_t reg)
 326 {
 327         WREG32(R_000070_MC_IND_INDEX, S_000070_MC_IND_ADDR(reg) |
 328                 S_000070_MC_IND_CITF_ARB0(1));
 329         return RREG32(R_000074_MC_IND_DATA);
 330 }
 331
 332 void rs600_mc_wreg(struct radeon_device *rdev, uint32_t reg, uint32_t v)
 333 {
 334         WREG32(R_000070_MC_IND_INDEX, S_000070_MC_IND_ADDR(reg) |
 335                 S_000070_MC_IND_CITF_ARB0(1) | S_000070_MC_IND_WR_EN(1));
 336         WREG32(R_000074_MC_IND_DATA, v);
 337 }
 338
 339 void rs600_debugfs(struct radeon_device *rdev)
 340 {
 341         if (r100_debugfs_rbbm_init(rdev))
 342                 DRM_ERROR("Failed to register debugfs file for RBBM !\n");
 343 }
 344
 345 void rs600_set_safe_registers(struct radeon_device *rdev)
 346 {
 347         rdev->config.r300.reg_safe_bm = rs600_reg_safe_bm;
 348         rdev->config.r300.reg_safe_bm_size = ARRAY_SIZE(rs600_reg_safe_bm);
 349 }
 350
 351 static void rs600_mc_program(struct radeon_device *rdev)
 352 {
 353         struct rv515_mc_save save;
 354
 355         /* Stops all mc clients */
 356         rv515_mc_stop(rdev, &save);
 357
 358         /* Wait for mc idle */
 359         if (rs600_mc_wait_for_idle(rdev))
 360                 dev_warn(rdev->dev, "Wait MC idle timeout before updating MC.\n");
 361
 362         /* FIXME: What does AGP means for such chipset ? */
 363         WREG32_MC(R_000005_MC_AGP_LOCATION, 0x0FFFFFFF);
 364         WREG32_MC(R_000006_AGP_BASE, 0);
 365         WREG32_MC(R_000007_AGP_BASE_2, 0);
 366         /* Program MC */
 367         WREG32_MC(R_000004_MC_FB_LOCATION,
 368                         S_000004_MC_FB_START(rdev->mc.vram_start >> 16) |
 369                         S_000004_MC_FB_TOP(rdev->mc.vram_end >> 16));
 370         WREG32(R_000134_HDP_FB_LOCATION,
 371                 S_000134_HDP_FB_START(rdev->mc.vram_start >> 16));
 372
 373         rv515_mc_resume(rdev, &save);
 374 }
 375
 376 static int rs600_startup(struct radeon_device *rdev)
 377 {
 378         int r;
 379
 380         rs600_mc_program(rdev);
 381         /* Resume clock */
 382         rv515_clock_startup(rdev);
 383         /* Initialize GPU configuration (# pipes, ...) */
 384         rs600_gpu_init(rdev);
 385         /* Initialize GART (initialize after TTM so we can allocate
 386          * memory through TTM but finalize after TTM) */
 387         r = rs600_gart_enable(rdev);
 388         if (r)
 389                 return r;
 390         /* Enable IRQ */
 391         rdev->irq.sw_int = true;
 392         rs600_irq_set(rdev);
 393         /* 1M ring buffer */
 394         r = r100_cp_init(rdev, 1024 * 1024);
 395         if (r) {
 396                 dev_err(rdev->dev, "failled initializing CP (%d).\n", r);
 397                 return r;
 398         }
 399         r = r100_wb_init(rdev);
 400         if (r)
 401                 dev_err(rdev->dev, "failled initializing WB (%d).\n", r);
 402         r = r100_ib_init(rdev);
 403         if (r) {
 404                 dev_err(rdev->dev, "failled initializing IB (%d).\n", r);
 405                 return r;
 406         }
 407         return 0;
 408 }
 409
 410 int rs600_resume(struct radeon_device *rdev)
 411 {
 412         /* Make sur GART are not working */
 413         rs600_gart_disable(rdev);
 414         /* Resume clock before doing reset */
 415         rv515_clock_startup(rdev);
 416         /* Reset gpu before posting otherwise ATOM will enter infinite loop */
 417         if (radeon_gpu_reset(rdev)) {
 418                 dev_warn(rdev->dev, "GPU reset failed ! (0xE40=0x%08X, 0x7C0=0x%08X)\n",
 419                         RREG32(R_000E40_RBBM_STATUS),
 420                         RREG32(R_0007C0_CP_STAT));
 421         }
 422         /* post */
 423         atom_asic_init(rdev->mode_info.atom_context);
 424         /* Resume clock after posting */
 425         rv515_clock_startup(rdev);
 426         return rs600_startup(rdev);
 427 }
 428
 429 int rs600_suspend(struct radeon_device *rdev)
 430 {
 431         r100_cp_disable(rdev);
 432         r100_wb_disable(rdev);
 433         rs600_irq_disable(rdev);
 434         rs600_gart_disable(rdev);
 435         return 0;
 436 }
 437
 438 void rs600_fini(struct radeon_device *rdev)
 439 {
 440         rs600_suspend(rdev);
 441         r100_cp_fini(rdev);
 442         r100_wb_fini(rdev);
 443         r100_ib_fini(rdev);
 444         radeon_gem_fini(rdev);
 445         rs600_gart_fini(rdev);
 446         radeon_irq_kms_fini(rdev);
 447         radeon_fence_driver_fini(rdev);
 448         radeon_object_fini(rdev);
 449         radeon_atombios_fini(rdev);
 450         kfree(rdev->bios);
 451         rdev->bios = NULL;
 452 }
 453
 454 int rs600_init(struct radeon_device *rdev)
 455 {
 456         int r;
 457
 458         /* Disable VGA */
 459         rv515_vga_render_disable(rdev);
 460         /* Initialize scratch registers */
 461         radeon_scratch_init(rdev);
 462         /* Initialize surface registers */
 463         radeon_surface_init(rdev);
 464         /* BIOS */
 465         if (!radeon_get_bios(rdev)) {
 466                 if (ASIC_IS_AVIVO(rdev))
 467                         return -EINVAL;
 468         }
 469         if (rdev->is_atom_bios) {
 470                 r = radeon_atombios_init(rdev);
 471                 if (r)
 472                         return r;
 473         } else {
 474                 dev_err(rdev->dev, "Expecting atombios for RS600 GPU\n");
 475                 return -EINVAL;
 476         }
 477         /* Reset gpu before posting otherwise ATOM will enter infinite loop */
 478         if (radeon_gpu_reset(rdev)) {
 479                 dev_warn(rdev->dev,
 480                         "GPU reset failed ! (0xE40=0x%08X, 0x7C0=0x%08X)\n",
 481                         RREG32(R_000E40_RBBM_STATUS),
 482                         RREG32(R_0007C0_CP_STAT));
 483         }
 484         /* check if cards are posted or not */
 485         if (!radeon_card_posted(rdev) && rdev->bios) {
 486                 DRM_INFO("GPU not posted. posting now...\n");
 487                 atom_asic_init(rdev->mode_info.atom_context);
 488         }
 489         /* Initialize clocks */
 490         radeon_get_clock_info(rdev->ddev);
 491         /* Initialize power management */
 492         radeon_pm_init(rdev);
 493         /* Get vram informations */
 494         rs600_vram_info(rdev);
 495         /* Initialize memory controller (also test AGP) */
 496         r = r420_mc_init(rdev);
 497         if (r)
 498                 return r;
 499         rs600_debugfs(rdev);
 500         /* Fence driver */
 501         r = radeon_fence_driver_init(rdev);
 502         if (r)
 503                 return r;
 504         r = radeon_irq_kms_init(rdev);
 505         if (r)
 506                 return r;
 507         /* Memory manager */
 508         r = radeon_object_init(rdev);
 509         if (r)
 510                 return r;
 511         r = rs600_gart_init(rdev);
 512         if (r)
 513                 return r;
 514         rs600_set_safe_registers(rdev);
 515         rdev->accel_working = true;
 516         r = rs600_startup(rdev);
 517         if (r) {
 518                 /* Somethings want wront with the accel init stop accel */
 519                 dev_err(rdev->dev, "Disabling GPU acceleration\n");
 520                 rs600_suspend(rdev);
 521                 r100_cp_fini(rdev);
 522                 r100_wb_fini(rdev);
 523                 r100_ib_fini(rdev);
 524                 rs600_gart_fini(rdev);
 525                 radeon_irq_kms_fini(rdev);
 526                 rdev->accel_working = false;
 527         }
 528         return 0;
 529 }