drm/radeon: apply Murphy's law to the kms irq code v3
[linux-2.6-block.git] / drivers / gpu / drm / radeon / evergreen.c
index 58991af90502dea8b98d9aac157d182a5feca21e..bdc1f30d7474f9883fb449a3c2fef8e64f4e62ef 100644 (file)
@@ -428,6 +428,7 @@ void evergreen_hpd_init(struct radeon_device *rdev)
 {
        struct drm_device *dev = rdev->ddev;
        struct drm_connector *connector;
+       unsigned enabled = 0;
        u32 tmp = DC_HPDx_CONNECTION_TIMER(0x9c4) |
                DC_HPDx_RX_INT_TIMER(0xfa) | DC_HPDx_EN;
 
@@ -436,73 +437,64 @@ void evergreen_hpd_init(struct radeon_device *rdev)
                switch (radeon_connector->hpd.hpd) {
                case RADEON_HPD_1:
                        WREG32(DC_HPD1_CONTROL, tmp);
-                       rdev->irq.hpd[0] = true;
                        break;
                case RADEON_HPD_2:
                        WREG32(DC_HPD2_CONTROL, tmp);
-                       rdev->irq.hpd[1] = true;
                        break;
                case RADEON_HPD_3:
                        WREG32(DC_HPD3_CONTROL, tmp);
-                       rdev->irq.hpd[2] = true;
                        break;
                case RADEON_HPD_4:
                        WREG32(DC_HPD4_CONTROL, tmp);
-                       rdev->irq.hpd[3] = true;
                        break;
                case RADEON_HPD_5:
                        WREG32(DC_HPD5_CONTROL, tmp);
-                       rdev->irq.hpd[4] = true;
                        break;
                case RADEON_HPD_6:
                        WREG32(DC_HPD6_CONTROL, tmp);
-                       rdev->irq.hpd[5] = true;
                        break;
                default:
                        break;
                }
                radeon_hpd_set_polarity(rdev, radeon_connector->hpd.hpd);
+               enabled |= 1 << radeon_connector->hpd.hpd;
        }
-       if (rdev->irq.installed)
-               evergreen_irq_set(rdev);
+       radeon_irq_kms_enable_hpd(rdev, enabled);
 }
 
 void evergreen_hpd_fini(struct radeon_device *rdev)
 {
        struct drm_device *dev = rdev->ddev;
        struct drm_connector *connector;
+       unsigned disabled = 0;
 
        list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
                struct radeon_connector *radeon_connector = to_radeon_connector(connector);
                switch (radeon_connector->hpd.hpd) {
                case RADEON_HPD_1:
                        WREG32(DC_HPD1_CONTROL, 0);
-                       rdev->irq.hpd[0] = false;
                        break;
                case RADEON_HPD_2:
                        WREG32(DC_HPD2_CONTROL, 0);
-                       rdev->irq.hpd[1] = false;
                        break;
                case RADEON_HPD_3:
                        WREG32(DC_HPD3_CONTROL, 0);
-                       rdev->irq.hpd[2] = false;
                        break;
                case RADEON_HPD_4:
                        WREG32(DC_HPD4_CONTROL, 0);
-                       rdev->irq.hpd[3] = false;
                        break;
                case RADEON_HPD_5:
                        WREG32(DC_HPD5_CONTROL, 0);
-                       rdev->irq.hpd[4] = false;
                        break;
                case RADEON_HPD_6:
                        WREG32(DC_HPD6_CONTROL, 0);
-                       rdev->irq.hpd[5] = false;
                        break;
                default:
                        break;
                }
+               disabled |= 1 << radeon_connector->hpd.hpd;
        }
+       radeon_irq_kms_disable_hpd(rdev, disabled);
 }
 
 /* watermark setup */
@@ -1029,6 +1021,11 @@ int evergreen_pcie_gart_enable(struct radeon_device *rdev)
                WREG32(MC_VM_MD_L1_TLB0_CNTL, tmp);
                WREG32(MC_VM_MD_L1_TLB1_CNTL, tmp);
                WREG32(MC_VM_MD_L1_TLB2_CNTL, tmp);
+               if ((rdev->family == CHIP_JUNIPER) ||
+                   (rdev->family == CHIP_CYPRESS) ||
+                   (rdev->family == CHIP_HEMLOCK) ||
+                   (rdev->family == CHIP_BARTS))
+                       WREG32(MC_VM_MD_L1_TLB3_CNTL, tmp);
        }
        WREG32(MC_VM_MB_L1_TLB0_CNTL, tmp);
        WREG32(MC_VM_MB_L1_TLB1_CNTL, tmp);
@@ -1366,7 +1363,7 @@ void evergreen_mc_program(struct radeon_device *rdev)
  */
 void evergreen_ring_ib_execute(struct radeon_device *rdev, struct radeon_ib *ib)
 {
-       struct radeon_ring *ring = &rdev->ring[ib->fence->ring];
+       struct radeon_ring *ring = &rdev->ring[ib->ring];
 
        /* set to DX10/11 mode */
        radeon_ring_write(ring, PACKET3(PACKET3_MODE_CONTROL, 0));
@@ -1553,163 +1550,10 @@ int evergreen_cp_resume(struct radeon_device *rdev)
 /*
  * Core functions
  */
-static u32 evergreen_get_tile_pipe_to_backend_map(struct radeon_device *rdev,
-                                                 u32 num_tile_pipes,
-                                                 u32 num_backends,
-                                                 u32 backend_disable_mask)
-{
-       u32 backend_map = 0;
-       u32 enabled_backends_mask = 0;
-       u32 enabled_backends_count = 0;
-       u32 cur_pipe;
-       u32 swizzle_pipe[EVERGREEN_MAX_PIPES];
-       u32 cur_backend = 0;
-       u32 i;
-       bool force_no_swizzle;
-
-       if (num_tile_pipes > EVERGREEN_MAX_PIPES)
-               num_tile_pipes = EVERGREEN_MAX_PIPES;
-       if (num_tile_pipes < 1)
-               num_tile_pipes = 1;
-       if (num_backends > EVERGREEN_MAX_BACKENDS)
-               num_backends = EVERGREEN_MAX_BACKENDS;
-       if (num_backends < 1)
-               num_backends = 1;
-
-       for (i = 0; i < EVERGREEN_MAX_BACKENDS; ++i) {
-               if (((backend_disable_mask >> i) & 1) == 0) {
-                       enabled_backends_mask |= (1 << i);
-                       ++enabled_backends_count;
-               }
-               if (enabled_backends_count == num_backends)
-                       break;
-       }
-
-       if (enabled_backends_count == 0) {
-               enabled_backends_mask = 1;
-               enabled_backends_count = 1;
-       }
-
-       if (enabled_backends_count != num_backends)
-               num_backends = enabled_backends_count;
-
-       memset((uint8_t *)&swizzle_pipe[0], 0, sizeof(u32) * EVERGREEN_MAX_PIPES);
-       switch (rdev->family) {
-       case CHIP_CEDAR:
-       case CHIP_REDWOOD:
-       case CHIP_PALM:
-       case CHIP_SUMO:
-       case CHIP_SUMO2:
-       case CHIP_TURKS:
-       case CHIP_CAICOS:
-               force_no_swizzle = false;
-               break;
-       case CHIP_CYPRESS:
-       case CHIP_HEMLOCK:
-       case CHIP_JUNIPER:
-       case CHIP_BARTS:
-       default:
-               force_no_swizzle = true;
-               break;
-       }
-       if (force_no_swizzle) {
-               bool last_backend_enabled = false;
-
-               force_no_swizzle = false;
-               for (i = 0; i < EVERGREEN_MAX_BACKENDS; ++i) {
-                       if (((enabled_backends_mask >> i) & 1) == 1) {
-                               if (last_backend_enabled)
-                                       force_no_swizzle = true;
-                               last_backend_enabled = true;
-                       } else
-                               last_backend_enabled = false;
-               }
-       }
-
-       switch (num_tile_pipes) {
-       case 1:
-       case 3:
-       case 5:
-       case 7:
-               DRM_ERROR("odd number of pipes!\n");
-               break;
-       case 2:
-               swizzle_pipe[0] = 0;
-               swizzle_pipe[1] = 1;
-               break;
-       case 4:
-               if (force_no_swizzle) {
-                       swizzle_pipe[0] = 0;
-                       swizzle_pipe[1] = 1;
-                       swizzle_pipe[2] = 2;
-                       swizzle_pipe[3] = 3;
-               } else {
-                       swizzle_pipe[0] = 0;
-                       swizzle_pipe[1] = 2;
-                       swizzle_pipe[2] = 1;
-                       swizzle_pipe[3] = 3;
-               }
-               break;
-       case 6:
-               if (force_no_swizzle) {
-                       swizzle_pipe[0] = 0;
-                       swizzle_pipe[1] = 1;
-                       swizzle_pipe[2] = 2;
-                       swizzle_pipe[3] = 3;
-                       swizzle_pipe[4] = 4;
-                       swizzle_pipe[5] = 5;
-               } else {
-                       swizzle_pipe[0] = 0;
-                       swizzle_pipe[1] = 2;
-                       swizzle_pipe[2] = 4;
-                       swizzle_pipe[3] = 1;
-                       swizzle_pipe[4] = 3;
-                       swizzle_pipe[5] = 5;
-               }
-               break;
-       case 8:
-               if (force_no_swizzle) {
-                       swizzle_pipe[0] = 0;
-                       swizzle_pipe[1] = 1;
-                       swizzle_pipe[2] = 2;
-                       swizzle_pipe[3] = 3;
-                       swizzle_pipe[4] = 4;
-                       swizzle_pipe[5] = 5;
-                       swizzle_pipe[6] = 6;
-                       swizzle_pipe[7] = 7;
-               } else {
-                       swizzle_pipe[0] = 0;
-                       swizzle_pipe[1] = 2;
-                       swizzle_pipe[2] = 4;
-                       swizzle_pipe[3] = 6;
-                       swizzle_pipe[4] = 1;
-                       swizzle_pipe[5] = 3;
-                       swizzle_pipe[6] = 5;
-                       swizzle_pipe[7] = 7;
-               }
-               break;
-       }
-
-       for (cur_pipe = 0; cur_pipe < num_tile_pipes; ++cur_pipe) {
-               while (((1 << cur_backend) & enabled_backends_mask) == 0)
-                       cur_backend = (cur_backend + 1) % EVERGREEN_MAX_BACKENDS;
-
-               backend_map |= (((cur_backend & 0xf) << (swizzle_pipe[cur_pipe] * 4)));
-
-               cur_backend = (cur_backend + 1) % EVERGREEN_MAX_BACKENDS;
-       }
-
-       return backend_map;
-}
-
 static void evergreen_gpu_init(struct radeon_device *rdev)
 {
-       u32 cc_rb_backend_disable = 0;
-       u32 cc_gc_shader_pipe_config;
-       u32 gb_addr_config = 0;
+       u32 gb_addr_config;
        u32 mc_shared_chmap, mc_arb_ramcfg;
-       u32 gb_backend_map;
-       u32 grbm_gfx_index;
        u32 sx_debug_1;
        u32 smx_dc_ctl0;
        u32 sq_config;
@@ -1724,6 +1568,7 @@ static void evergreen_gpu_init(struct radeon_device *rdev)
        u32 sq_stack_resource_mgmt_3;
        u32 vgt_cache_invalidation;
        u32 hdp_host_path_cntl, tmp;
+       u32 disabled_rb_mask;
        int i, j, num_shader_engines, ps_thread_count;
 
        switch (rdev->family) {
@@ -1748,6 +1593,7 @@ static void evergreen_gpu_init(struct radeon_device *rdev)
                rdev->config.evergreen.sc_prim_fifo_size = 0x100;
                rdev->config.evergreen.sc_hiz_tile_fifo_size = 0x30;
                rdev->config.evergreen.sc_earlyz_tile_fifo_size = 0x130;
+               gb_addr_config = CYPRESS_GB_ADDR_CONFIG_GOLDEN;
                break;
        case CHIP_JUNIPER:
                rdev->config.evergreen.num_ses = 1;
@@ -1769,6 +1615,7 @@ static void evergreen_gpu_init(struct radeon_device *rdev)
                rdev->config.evergreen.sc_prim_fifo_size = 0x100;
                rdev->config.evergreen.sc_hiz_tile_fifo_size = 0x30;
                rdev->config.evergreen.sc_earlyz_tile_fifo_size = 0x130;
+               gb_addr_config = JUNIPER_GB_ADDR_CONFIG_GOLDEN;
                break;
        case CHIP_REDWOOD:
                rdev->config.evergreen.num_ses = 1;
@@ -1790,6 +1637,7 @@ static void evergreen_gpu_init(struct radeon_device *rdev)
                rdev->config.evergreen.sc_prim_fifo_size = 0x100;
                rdev->config.evergreen.sc_hiz_tile_fifo_size = 0x30;
                rdev->config.evergreen.sc_earlyz_tile_fifo_size = 0x130;
+               gb_addr_config = REDWOOD_GB_ADDR_CONFIG_GOLDEN;
                break;
        case CHIP_CEDAR:
        default:
@@ -1812,6 +1660,7 @@ static void evergreen_gpu_init(struct radeon_device *rdev)
                rdev->config.evergreen.sc_prim_fifo_size = 0x40;
                rdev->config.evergreen.sc_hiz_tile_fifo_size = 0x30;
                rdev->config.evergreen.sc_earlyz_tile_fifo_size = 0x130;
+               gb_addr_config = CEDAR_GB_ADDR_CONFIG_GOLDEN;
                break;
        case CHIP_PALM:
                rdev->config.evergreen.num_ses = 1;
@@ -1833,6 +1682,7 @@ static void evergreen_gpu_init(struct radeon_device *rdev)
                rdev->config.evergreen.sc_prim_fifo_size = 0x40;
                rdev->config.evergreen.sc_hiz_tile_fifo_size = 0x30;
                rdev->config.evergreen.sc_earlyz_tile_fifo_size = 0x130;
+               gb_addr_config = CEDAR_GB_ADDR_CONFIG_GOLDEN;
                break;
        case CHIP_SUMO:
                rdev->config.evergreen.num_ses = 1;
@@ -1860,6 +1710,7 @@ static void evergreen_gpu_init(struct radeon_device *rdev)
                rdev->config.evergreen.sc_prim_fifo_size = 0x40;
                rdev->config.evergreen.sc_hiz_tile_fifo_size = 0x30;
                rdev->config.evergreen.sc_earlyz_tile_fifo_size = 0x130;
+               gb_addr_config = REDWOOD_GB_ADDR_CONFIG_GOLDEN;
                break;
        case CHIP_SUMO2:
                rdev->config.evergreen.num_ses = 1;
@@ -1881,6 +1732,7 @@ static void evergreen_gpu_init(struct radeon_device *rdev)
                rdev->config.evergreen.sc_prim_fifo_size = 0x40;
                rdev->config.evergreen.sc_hiz_tile_fifo_size = 0x30;
                rdev->config.evergreen.sc_earlyz_tile_fifo_size = 0x130;
+               gb_addr_config = REDWOOD_GB_ADDR_CONFIG_GOLDEN;
                break;
        case CHIP_BARTS:
                rdev->config.evergreen.num_ses = 2;
@@ -1902,6 +1754,7 @@ static void evergreen_gpu_init(struct radeon_device *rdev)
                rdev->config.evergreen.sc_prim_fifo_size = 0x100;
                rdev->config.evergreen.sc_hiz_tile_fifo_size = 0x30;
                rdev->config.evergreen.sc_earlyz_tile_fifo_size = 0x130;
+               gb_addr_config = BARTS_GB_ADDR_CONFIG_GOLDEN;
                break;
        case CHIP_TURKS:
                rdev->config.evergreen.num_ses = 1;
@@ -1923,6 +1776,7 @@ static void evergreen_gpu_init(struct radeon_device *rdev)
                rdev->config.evergreen.sc_prim_fifo_size = 0x100;
                rdev->config.evergreen.sc_hiz_tile_fifo_size = 0x30;
                rdev->config.evergreen.sc_earlyz_tile_fifo_size = 0x130;
+               gb_addr_config = TURKS_GB_ADDR_CONFIG_GOLDEN;
                break;
        case CHIP_CAICOS:
                rdev->config.evergreen.num_ses = 1;
@@ -1944,6 +1798,7 @@ static void evergreen_gpu_init(struct radeon_device *rdev)
                rdev->config.evergreen.sc_prim_fifo_size = 0x40;
                rdev->config.evergreen.sc_hiz_tile_fifo_size = 0x30;
                rdev->config.evergreen.sc_earlyz_tile_fifo_size = 0x130;
+               gb_addr_config = CAICOS_GB_ADDR_CONFIG_GOLDEN;
                break;
        }
 
@@ -1960,20 +1815,6 @@ static void evergreen_gpu_init(struct radeon_device *rdev)
 
        evergreen_fix_pci_max_read_req_size(rdev);
 
-       cc_gc_shader_pipe_config = RREG32(CC_GC_SHADER_PIPE_CONFIG) & ~2;
-
-       cc_gc_shader_pipe_config |=
-               INACTIVE_QD_PIPES((EVERGREEN_MAX_PIPES_MASK << rdev->config.evergreen.max_pipes)
-                                 & EVERGREEN_MAX_PIPES_MASK);
-       cc_gc_shader_pipe_config |=
-               INACTIVE_SIMDS((EVERGREEN_MAX_SIMDS_MASK << rdev->config.evergreen.max_simds)
-                              & EVERGREEN_MAX_SIMDS_MASK);
-
-       cc_rb_backend_disable =
-               BACKEND_DISABLE((EVERGREEN_MAX_BACKENDS_MASK << rdev->config.evergreen.max_backends)
-                               & EVERGREEN_MAX_BACKENDS_MASK);
-
-
        mc_shared_chmap = RREG32(MC_SHARED_CHMAP);
        if ((rdev->family == CHIP_PALM) ||
            (rdev->family == CHIP_SUMO) ||
@@ -1982,134 +1823,6 @@ static void evergreen_gpu_init(struct radeon_device *rdev)
        else
                mc_arb_ramcfg = RREG32(MC_ARB_RAMCFG);
 
-       switch (rdev->config.evergreen.max_tile_pipes) {
-       case 1:
-       default:
-               gb_addr_config |= NUM_PIPES(0);
-               break;
-       case 2:
-               gb_addr_config |= NUM_PIPES(1);
-               break;
-       case 4:
-               gb_addr_config |= NUM_PIPES(2);
-               break;
-       case 8:
-               gb_addr_config |= NUM_PIPES(3);
-               break;
-       }
-
-       gb_addr_config |= PIPE_INTERLEAVE_SIZE((mc_arb_ramcfg & BURSTLENGTH_MASK) >> BURSTLENGTH_SHIFT);
-       gb_addr_config |= BANK_INTERLEAVE_SIZE(0);
-       gb_addr_config |= NUM_SHADER_ENGINES(rdev->config.evergreen.num_ses - 1);
-       gb_addr_config |= SHADER_ENGINE_TILE_SIZE(1);
-       gb_addr_config |= NUM_GPUS(0); /* Hemlock? */
-       gb_addr_config |= MULTI_GPU_TILE_SIZE(2);
-
-       if (((mc_arb_ramcfg & NOOFCOLS_MASK) >> NOOFCOLS_SHIFT) > 2)
-               gb_addr_config |= ROW_SIZE(2);
-       else
-               gb_addr_config |= ROW_SIZE((mc_arb_ramcfg & NOOFCOLS_MASK) >> NOOFCOLS_SHIFT);
-
-       if (rdev->ddev->pdev->device == 0x689e) {
-               u32 efuse_straps_4;
-               u32 efuse_straps_3;
-               u8 efuse_box_bit_131_124;
-
-               WREG32(RCU_IND_INDEX, 0x204);
-               efuse_straps_4 = RREG32(RCU_IND_DATA);
-               WREG32(RCU_IND_INDEX, 0x203);
-               efuse_straps_3 = RREG32(RCU_IND_DATA);
-               efuse_box_bit_131_124 = (u8)(((efuse_straps_4 & 0xf) << 4) | ((efuse_straps_3 & 0xf0000000) >> 28));
-
-               switch(efuse_box_bit_131_124) {
-               case 0x00:
-                       gb_backend_map = 0x76543210;
-                       break;
-               case 0x55:
-                       gb_backend_map = 0x77553311;
-                       break;
-               case 0x56:
-                       gb_backend_map = 0x77553300;
-                       break;
-               case 0x59:
-                       gb_backend_map = 0x77552211;
-                       break;
-               case 0x66:
-                       gb_backend_map = 0x77443300;
-                       break;
-               case 0x99:
-                       gb_backend_map = 0x66552211;
-                       break;
-               case 0x5a:
-                       gb_backend_map = 0x77552200;
-                       break;
-               case 0xaa:
-                       gb_backend_map = 0x66442200;
-                       break;
-               case 0x95:
-                       gb_backend_map = 0x66553311;
-                       break;
-               default:
-                       DRM_ERROR("bad backend map, using default\n");
-                       gb_backend_map =
-                               evergreen_get_tile_pipe_to_backend_map(rdev,
-                                                                      rdev->config.evergreen.max_tile_pipes,
-                                                                      rdev->config.evergreen.max_backends,
-                                                                      ((EVERGREEN_MAX_BACKENDS_MASK <<
-                                                                  rdev->config.evergreen.max_backends) &
-                                                                       EVERGREEN_MAX_BACKENDS_MASK));
-                       break;
-               }
-       } else if (rdev->ddev->pdev->device == 0x68b9) {
-               u32 efuse_straps_3;
-               u8 efuse_box_bit_127_124;
-
-               WREG32(RCU_IND_INDEX, 0x203);
-               efuse_straps_3 = RREG32(RCU_IND_DATA);
-               efuse_box_bit_127_124 = (u8)((efuse_straps_3 & 0xF0000000) >> 28);
-
-               switch(efuse_box_bit_127_124) {
-               case 0x0:
-                       gb_backend_map = 0x00003210;
-                       break;
-               case 0x5:
-               case 0x6:
-               case 0x9:
-               case 0xa:
-                       gb_backend_map = 0x00003311;
-                       break;
-               default:
-                       DRM_ERROR("bad backend map, using default\n");
-                       gb_backend_map =
-                               evergreen_get_tile_pipe_to_backend_map(rdev,
-                                                                      rdev->config.evergreen.max_tile_pipes,
-                                                                      rdev->config.evergreen.max_backends,
-                                                                      ((EVERGREEN_MAX_BACKENDS_MASK <<
-                                                                  rdev->config.evergreen.max_backends) &
-                                                                       EVERGREEN_MAX_BACKENDS_MASK));
-                       break;
-               }
-       } else {
-               switch (rdev->family) {
-               case CHIP_CYPRESS:
-               case CHIP_HEMLOCK:
-               case CHIP_BARTS:
-                       gb_backend_map = 0x66442200;
-                       break;
-               case CHIP_JUNIPER:
-                       gb_backend_map = 0x00002200;
-                       break;
-               default:
-                       gb_backend_map =
-                               evergreen_get_tile_pipe_to_backend_map(rdev,
-                                                                      rdev->config.evergreen.max_tile_pipes,
-                                                                      rdev->config.evergreen.max_backends,
-                                                                      ((EVERGREEN_MAX_BACKENDS_MASK <<
-                                                                        rdev->config.evergreen.max_backends) &
-                                                                       EVERGREEN_MAX_BACKENDS_MASK));
-               }
-       }
-
        /* setup tiling info dword.  gb_addr_config is not adequate since it does
         * not have bank info, so create a custom tiling dword.
         * bits 3:0   num_pipes
@@ -2136,45 +1849,54 @@ static void evergreen_gpu_init(struct radeon_device *rdev)
        /* num banks is 8 on all fusion asics. 0 = 4, 1 = 8, 2 = 16 */
        if (rdev->flags & RADEON_IS_IGP)
                rdev->config.evergreen.tile_config |= 1 << 4;
-       else
-               rdev->config.evergreen.tile_config |=
-                       ((mc_arb_ramcfg & NOOFBANK_MASK) >> NOOFBANK_SHIFT) << 4;
-       rdev->config.evergreen.tile_config |=
-               ((mc_arb_ramcfg & BURSTLENGTH_MASK) >> BURSTLENGTH_SHIFT) << 8;
+       else {
+               if ((mc_arb_ramcfg & NOOFBANK_MASK) >> NOOFBANK_SHIFT)
+                       rdev->config.evergreen.tile_config |= 1 << 4;
+               else
+                       rdev->config.evergreen.tile_config |= 0 << 4;
+       }
+       rdev->config.evergreen.tile_config |= 0 << 8;
        rdev->config.evergreen.tile_config |=
                ((gb_addr_config & 0x30000000) >> 28) << 12;
 
-       rdev->config.evergreen.backend_map = gb_backend_map;
-       WREG32(GB_BACKEND_MAP, gb_backend_map);
-       WREG32(GB_ADDR_CONFIG, gb_addr_config);
-       WREG32(DMIF_ADDR_CONFIG, gb_addr_config);
-       WREG32(HDP_ADDR_CONFIG, gb_addr_config);
+       num_shader_engines = (gb_addr_config & NUM_SHADER_ENGINES(3) >> 12) + 1;
 
-       num_shader_engines = ((RREG32(GB_ADDR_CONFIG) & NUM_SHADER_ENGINES(3)) >> 12) + 1;
-       grbm_gfx_index = INSTANCE_BROADCAST_WRITES;
-
-       for (i = 0; i < rdev->config.evergreen.num_ses; i++) {
-               u32 rb = cc_rb_backend_disable | (0xf0 << 16);
-               u32 sp = cc_gc_shader_pipe_config;
-               u32 gfx = grbm_gfx_index | SE_INDEX(i);
+       if ((rdev->family >= CHIP_CEDAR) && (rdev->family <= CHIP_HEMLOCK)) {
+               u32 efuse_straps_4;
+               u32 efuse_straps_3;
 
-               if (i == num_shader_engines) {
-                       rb |= BACKEND_DISABLE(EVERGREEN_MAX_BACKENDS_MASK);
-                       sp |= INACTIVE_SIMDS(EVERGREEN_MAX_SIMDS_MASK);
+               WREG32(RCU_IND_INDEX, 0x204);
+               efuse_straps_4 = RREG32(RCU_IND_DATA);
+               WREG32(RCU_IND_INDEX, 0x203);
+               efuse_straps_3 = RREG32(RCU_IND_DATA);
+               tmp = (((efuse_straps_4 & 0xf) << 4) |
+                     ((efuse_straps_3 & 0xf0000000) >> 28));
+       } else {
+               tmp = 0;
+               for (i = (rdev->config.evergreen.num_ses - 1); i >= 0; i--) {
+                       u32 rb_disable_bitmap;
+
+                       WREG32(GRBM_GFX_INDEX, INSTANCE_BROADCAST_WRITES | SE_INDEX(i));
+                       WREG32(RLC_GFX_INDEX, INSTANCE_BROADCAST_WRITES | SE_INDEX(i));
+                       rb_disable_bitmap = (RREG32(CC_RB_BACKEND_DISABLE) & 0x00ff0000) >> 16;
+                       tmp <<= 4;
+                       tmp |= rb_disable_bitmap;
                }
+       }
+       /* enabled rb are just the one not disabled :) */
+       disabled_rb_mask = tmp;
 
-               WREG32(GRBM_GFX_INDEX, gfx);
-               WREG32(RLC_GFX_INDEX, gfx);
+       WREG32(GRBM_GFX_INDEX, INSTANCE_BROADCAST_WRITES | SE_BROADCAST_WRITES);
+       WREG32(RLC_GFX_INDEX, INSTANCE_BROADCAST_WRITES | SE_BROADCAST_WRITES);
 
-               WREG32(CC_RB_BACKEND_DISABLE, rb);
-               WREG32(CC_SYS_RB_BACKEND_DISABLE, rb);
-               WREG32(GC_USER_RB_BACKEND_DISABLE, rb);
-               WREG32(CC_GC_SHADER_PIPE_CONFIG, sp);
-        }
+       WREG32(GB_ADDR_CONFIG, gb_addr_config);
+       WREG32(DMIF_ADDR_CONFIG, gb_addr_config);
+       WREG32(HDP_ADDR_CONFIG, gb_addr_config);
 
-       grbm_gfx_index |= SE_BROADCAST_WRITES;
-       WREG32(GRBM_GFX_INDEX, grbm_gfx_index);
-       WREG32(RLC_GFX_INDEX, grbm_gfx_index);
+       tmp = gb_addr_config & NUM_PIPES_MASK;
+       tmp = r6xx_remap_render_backend(rdev, tmp, rdev->config.evergreen.max_backends,
+                                       EVERGREEN_MAX_BACKENDS, disabled_rb_mask);
+       WREG32(GB_BACKEND_MAP, tmp);
 
        WREG32(CGTS_SYS_TCC_DISABLE, 0);
        WREG32(CGTS_TCC_DISABLE, 0);
@@ -2202,6 +1924,9 @@ static void evergreen_gpu_init(struct radeon_device *rdev)
        smx_dc_ctl0 |= NUMBER_OF_SETS(rdev->config.evergreen.sx_num_of_sets);
        WREG32(SMX_DC_CTL0, smx_dc_ctl0);
 
+       if (rdev->family <= CHIP_SUMO2)
+               WREG32(SMX_SAR_CTL0, 0x00010000);
+
        WREG32(SX_EXPORT_BUFFER_SIZES, (COLOR_BUFFER_SIZE((rdev->config.evergreen.sx_max_export_size / 4) - 1) |
                                        POSITION_BUFFER_SIZE((rdev->config.evergreen.sx_max_export_pos_size / 4) - 1) |
                                        SMX_BUFFER_SIZE((rdev->config.evergreen.sx_max_export_smx_size / 4) - 1)));
@@ -2943,7 +2668,6 @@ int evergreen_irq_process(struct radeon_device *rdev)
        u32 rptr;
        u32 src_id, src_data;
        u32 ring_index;
-       unsigned long flags;
        bool queue_hotplug = false;
        bool queue_hdmi = false;
 
@@ -2951,22 +2675,21 @@ int evergreen_irq_process(struct radeon_device *rdev)
                return IRQ_NONE;
 
        wptr = evergreen_get_ih_wptr(rdev);
+
+restart_ih:
+       /* is somebody else already processing irqs? */
+       if (atomic_xchg(&rdev->ih.lock, 1))
+               return IRQ_NONE;
+
        rptr = rdev->ih.rptr;
        DRM_DEBUG("r600_irq_process start: rptr %d, wptr %d\n", rptr, wptr);
 
-       spin_lock_irqsave(&rdev->ih.lock, flags);
-       if (rptr == wptr) {
-               spin_unlock_irqrestore(&rdev->ih.lock, flags);
-               return IRQ_NONE;
-       }
-restart_ih:
        /* Order reading of wptr vs. reading of IH ring data */
        rmb();
 
        /* display interrupts */
        evergreen_irq_ack(rdev);
 
-       rdev->ih.wptr = wptr;
        while (rptr != wptr) {
                /* wptr/rptr are in bytes! */
                ring_index = rptr / 4;
@@ -3253,7 +2976,6 @@ restart_ih:
                        break;
                case 233: /* GUI IDLE */
                        DRM_DEBUG("IH: GUI idle\n");
-                       rdev->pm.gui_idle = true;
                        wake_up(&rdev->irq.idle_queue);
                        break;
                default:
@@ -3265,17 +2987,19 @@ restart_ih:
                rptr += 16;
                rptr &= rdev->ih.ptr_mask;
        }
-       /* make sure wptr hasn't changed while processing */
-       wptr = evergreen_get_ih_wptr(rdev);
-       if (wptr != rdev->ih.wptr)
-               goto restart_ih;
        if (queue_hotplug)
                schedule_work(&rdev->hotplug_work);
        if (queue_hdmi)
                schedule_work(&rdev->audio_work);
        rdev->ih.rptr = rptr;
        WREG32(IH_RB_RPTR, rdev->ih.rptr);
-       spin_unlock_irqrestore(&rdev->ih.lock, flags);
+       atomic_set(&rdev->ih.lock, 0);
+
+       /* make sure wptr hasn't changed while processing */
+       wptr = evergreen_get_ih_wptr(rdev);
+       if (wptr != rptr)
+               goto restart_ih;
+
        return IRQ_HANDLED;
 }