/* * Copyright 2008 Advanced Micro Devices, Inc. * Copyright 2008 Red Hat Inc. * Copyright 2009 Jerome Glisse. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR * OTHER DEALINGS IN THE SOFTWARE. * * Authors: Dave Airlie * Alex Deucher * Jerome Glisse */ #include #include #include #include #include #include #include #include #include "radeon.h" #include "radeon_asic.h" #include "radeon_drv.h" #include "radeon_kms.h" #if defined(CONFIG_VGA_SWITCHEROO) bool radeon_has_atpx(void); #else static inline bool radeon_has_atpx(void) { return false; } #endif /** * radeon_driver_unload_kms - Main unload function for KMS. * * @dev: drm dev pointer * * This is the main unload function for KMS (all asics). * It calls radeon_modeset_fini() to tear down the * displays, and radeon_device_fini() to tear down * the rest of the device (CP, writeback, etc.). * Returns 0 on success. */ void radeon_driver_unload_kms(struct drm_device *dev) { struct radeon_device *rdev = dev->dev_private; if (rdev == NULL) return; if (rdev->rmmio == NULL) goto done_free; if (radeon_is_px(dev)) { pm_runtime_get_sync(dev->dev); pm_runtime_forbid(dev->dev); } radeon_acpi_fini(rdev); radeon_modeset_fini(rdev); radeon_device_fini(rdev); if (rdev->agp) arch_phys_wc_del(rdev->agp->agp_mtrr); kfree(rdev->agp); rdev->agp = NULL; done_free: kfree(rdev); dev->dev_private = NULL; } /** * radeon_driver_load_kms - Main load function for KMS. * * @dev: drm dev pointer * @flags: device flags * * This is the main load function for KMS (all asics). * It calls radeon_device_init() to set up the non-display * parts of the chip (asic init, CP, writeback, etc.), and * radeon_modeset_init() to set up the display parts * (crtcs, encoders, hotplug detect, etc.). * Returns 0 on success, error on failure. */ int radeon_driver_load_kms(struct drm_device *dev, unsigned long flags) { struct pci_dev *pdev = to_pci_dev(dev->dev); struct radeon_device *rdev = dev->dev_private; int r, acpi_status; #ifdef __alpha__ rdev->hose = pdev->sysdata; #endif if (pci_find_capability(pdev, PCI_CAP_ID_AGP)) rdev->agp = radeon_agp_head_init(dev); if (rdev->agp) { rdev->agp->agp_mtrr = arch_phys_wc_add( rdev->agp->agp_info.aper_base, rdev->agp->agp_info.aper_size * 1024 * 1024); } /* update BUS flag */ if (pci_find_capability(pdev, PCI_CAP_ID_AGP)) { flags |= RADEON_IS_AGP; } else if (pci_is_pcie(pdev)) { flags |= RADEON_IS_PCIE; } else { flags |= RADEON_IS_PCI; } if ((radeon_runtime_pm != 0) && radeon_has_atpx() && ((flags & RADEON_IS_IGP) == 0) && !pci_is_thunderbolt_attached(pdev)) flags |= RADEON_IS_PX; /* radeon_device_init should report only fatal error * like memory allocation failure or iomapping failure, * or memory manager initialization failure, it must * properly initialize the GPU MC controller and permit * VRAM allocation */ r = radeon_device_init(rdev, dev, pdev, flags); if (r) { dev_err(dev->dev, "Fatal error during GPU init\n"); goto out; } /* Again modeset_init should fail only on fatal error * otherwise it should provide enough functionalities * for shadowfb to run */ r = radeon_modeset_init(rdev); if (r) dev_err(dev->dev, "Fatal error during modeset init\n"); /* Call ACPI methods: require modeset init * but failure is not fatal */ if (!r) { acpi_status = radeon_acpi_init(rdev); if (acpi_status) dev_dbg(dev->dev, "Error during ACPI methods call\n"); } if (radeon_is_px(dev)) { dev_pm_set_driver_flags(dev->dev, DPM_FLAG_NO_DIRECT_COMPLETE); pm_runtime_use_autosuspend(dev->dev); pm_runtime_set_autosuspend_delay(dev->dev, 5000); pm_runtime_set_active(dev->dev); pm_runtime_allow(dev->dev); pm_runtime_mark_last_busy(dev->dev); pm_runtime_put_autosuspend(dev->dev); } out: if (r) radeon_driver_unload_kms(dev); return r; } /** * radeon_set_filp_rights - Set filp right. * * @dev: drm dev pointer * @owner: drm file * @applier: drm file * @value: value * * Sets the filp rights for the device (all asics). */ static void radeon_set_filp_rights(struct drm_device *dev, struct drm_file **owner, struct drm_file *applier, uint32_t *value) { struct radeon_device *rdev = dev->dev_private; mutex_lock(&rdev->gem.mutex); if (*value == 1) { /* wants rights */ if (!*owner) *owner = applier; } else if (*value == 0) { /* revokes rights */ if (*owner == applier) *owner = NULL; } *value = *owner == applier ? 1 : 0; mutex_unlock(&rdev->gem.mutex); } /* * Userspace get information ioctl */ /** * radeon_info_ioctl - answer a device specific request. * * @dev: drm device pointer * @data: request object * @filp: drm filp * * This function is used to pass device specific parameters to the userspace * drivers. Examples include: pci device id, pipeline parms, tiling params, * etc. (all asics). * Returns 0 on success, -EINVAL on failure. */ int radeon_info_ioctl(struct drm_device *dev, void *data, struct drm_file *filp) { struct radeon_device *rdev = dev->dev_private; struct drm_radeon_info *info = data; struct radeon_mode_info *minfo = &rdev->mode_info; uint32_t *value, value_tmp, *value_ptr, value_size; struct ttm_resource_manager *man; uint64_t value64; struct drm_crtc *crtc; int i, found; value_ptr = (uint32_t *)((unsigned long)info->value); value = &value_tmp; value_size = sizeof(uint32_t); switch (info->request) { case RADEON_INFO_DEVICE_ID: *value = to_pci_dev(dev->dev)->device; break; case RADEON_INFO_NUM_GB_PIPES: *value = rdev->num_gb_pipes; break; case RADEON_INFO_NUM_Z_PIPES: *value = rdev->num_z_pipes; break; case RADEON_INFO_ACCEL_WORKING: /* xf86-video-ati 6.13.0 relies on this being false for evergreen */ if ((rdev->family >= CHIP_CEDAR) && (rdev->family <= CHIP_HEMLOCK)) *value = false; else *value = rdev->accel_working; break; case RADEON_INFO_CRTC_FROM_ID: if (copy_from_user(value, value_ptr, sizeof(uint32_t))) { DRM_ERROR("copy_from_user %s:%u\n", __func__, __LINE__); return -EFAULT; } for (i = 0, found = 0; i < rdev->num_crtc; i++) { crtc = (struct drm_crtc *)minfo->crtcs[i]; if (crtc && crtc->base.id == *value) { struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc); *value = radeon_crtc->crtc_id; found = 1; break; } } if (!found) { DRM_DEBUG_KMS("unknown crtc id %d\n", *value); return -EINVAL; } break; case RADEON_INFO_ACCEL_WORKING2: if (rdev->family == CHIP_HAWAII) { if (rdev->accel_working) { if (rdev->new_fw) *value = 3; else *value = 2; } else { *value = 0; } } else { *value = rdev->accel_working; } break; case RADEON_INFO_TILING_CONFIG: if (rdev->family >= CHIP_BONAIRE) *value = rdev->config.cik.tile_config; else if (rdev->family >= CHIP_TAHITI) *value = rdev->config.si.tile_config; else if (rdev->family >= CHIP_CAYMAN) *value = rdev->config.cayman.tile_config; else if (rdev->family >= CHIP_CEDAR) *value = rdev->config.evergreen.tile_config; else if (rdev->family >= CHIP_RV770) *value = rdev->config.rv770.tile_config; else if (rdev->family >= CHIP_R600) *value = rdev->config.r600.tile_config; else { DRM_DEBUG_KMS("tiling config is r6xx+ only!\n"); return -EINVAL; } break; case RADEON_INFO_WANT_HYPERZ: /* The "value" here is both an input and output parameter. * If the input value is 1, filp requests hyper-z access. * If the input value is 0, filp revokes its hyper-z access. * * When returning, the value is 1 if filp owns hyper-z access, * 0 otherwise. */ if (copy_from_user(value, value_ptr, sizeof(uint32_t))) { DRM_ERROR("copy_from_user %s:%u\n", __func__, __LINE__); return -EFAULT; } if (*value >= 2) { DRM_DEBUG_KMS("WANT_HYPERZ: invalid value %d\n", *value); return -EINVAL; } radeon_set_filp_rights(dev, &rdev->hyperz_filp, filp, value); break; case RADEON_INFO_WANT_CMASK: /* The same logic as Hyper-Z. */ if (copy_from_user(value, value_ptr, sizeof(uint32_t))) { DRM_ERROR("copy_from_user %s:%u\n", __func__, __LINE__); return -EFAULT; } if (*value >= 2) { DRM_DEBUG_KMS("WANT_CMASK: invalid value %d\n", *value); return -EINVAL; } radeon_set_filp_rights(dev, &rdev->cmask_filp, filp, value); break; case RADEON_INFO_CLOCK_CRYSTAL_FREQ: /* return clock value in KHz */ if (rdev->asic->get_xclk) *value = radeon_get_xclk(rdev) * 10; else *value = rdev->clock.spll.reference_freq * 10; break; case RADEON_INFO_NUM_BACKENDS: if (rdev->family >= CHIP_BONAIRE) *value = rdev->config.cik.max_backends_per_se * rdev->config.cik.max_shader_engines; else if (rdev->family >= CHIP_TAHITI) *value = rdev->config.si.max_backends_per_se * rdev->config.si.max_shader_engines; else if (rdev->family >= CHIP_CAYMAN) *value = rdev->config.cayman.max_backends_per_se * rdev->config.cayman.max_shader_engines; else if (rdev->family >= CHIP_CEDAR) *value = rdev->config.evergreen.max_backends; else if (rdev->family >= CHIP_RV770) *value = rdev->config.rv770.max_backends; else if (rdev->family >= CHIP_R600) *value = rdev->config.r600.max_backends; else { return -EINVAL; } break; case RADEON_INFO_NUM_TILE_PIPES: if (rdev->family >= CHIP_BONAIRE) *value = rdev->config.cik.max_tile_pipes; else if (rdev->family >= CHIP_TAHITI) *value = rdev->config.si.max_tile_pipes; else if (rdev->family >= CHIP_CAYMAN) *value = rdev->config.cayman.max_tile_pipes; else if (rdev->family >= CHIP_CEDAR) *value = rdev->config.evergreen.max_tile_pipes; else if (rdev->family >= CHIP_RV770) *value = rdev->config.rv770.max_tile_pipes; else if (rdev->family >= CHIP_R600) *value = rdev->config.r600.max_tile_pipes; else { return -EINVAL; } break; case RADEON_INFO_FUSION_GART_WORKING: *value = 1; break; case RADEON_INFO_BACKEND_MAP: if (rdev->family >= CHIP_BONAIRE) *value = rdev->config.cik.backend_map; else if (rdev->family >= CHIP_TAHITI) *value = rdev->config.si.backend_map; else if (rdev->family >= CHIP_CAYMAN) *value = rdev->config.cayman.backend_map; else if (rdev->family >= CHIP_CEDAR) *value = rdev->config.evergreen.backend_map; else if (rdev->family >= CHIP_RV770) *value = rdev->config.rv770.backend_map; else if (rdev->family >= CHIP_R600) *value = rdev->config.r600.backend_map; else { return -EINVAL; } break; case RADEON_INFO_VA_START: /* this is where we report if vm is supported or not */ if (rdev->family < CHIP_CAYMAN) return -EINVAL; *value = RADEON_VA_RESERVED_SIZE; break; case RADEON_INFO_IB_VM_MAX_SIZE: /* this is where we report if vm is supported or not */ if (rdev->family < CHIP_CAYMAN) return -EINVAL; *value = RADEON_IB_VM_MAX_SIZE; break; case RADEON_INFO_MAX_PIPES: if (rdev->family >= CHIP_BONAIRE) *value = rdev->config.cik.max_cu_per_sh; else if (rdev->family >= CHIP_TAHITI) *value = rdev->config.si.max_cu_per_sh; else if (rdev->family >= CHIP_CAYMAN) *value = rdev->config.cayman.max_pipes_per_simd; else if (rdev->family >= CHIP_CEDAR) *value = rdev->config.evergreen.max_pipes; else if (rdev->family >= CHIP_RV770) *value = rdev->config.rv770.max_pipes; else if (rdev->family >= CHIP_R600) *value = rdev->config.r600.max_pipes; else { return -EINVAL; } break; case RADEON_INFO_TIMESTAMP: if (rdev->family < CHIP_R600) { DRM_DEBUG_KMS("timestamp is r6xx+ only!\n"); return -EINVAL; } value = (uint32_t *)&value64; value_size = sizeof(uint64_t); value64 = radeon_get_gpu_clock_counter(rdev); break; case RADEON_INFO_MAX_SE: if (rdev->family >= CHIP_BONAIRE) *value = rdev->config.cik.max_shader_engines; else if (rdev->family >= CHIP_TAHITI) *value = rdev->config.si.max_shader_engines; else if (rdev->family >= CHIP_CAYMAN) *value = rdev->config.cayman.max_shader_engines; else if (rdev->family >= CHIP_CEDAR) *value = rdev->config.evergreen.num_ses; else *value = 1; break; case RADEON_INFO_MAX_SH_PER_SE: if (rdev->family >= CHIP_BONAIRE) *value = rdev->config.cik.max_sh_per_se; else if (rdev->family >= CHIP_TAHITI) *value = rdev->config.si.max_sh_per_se; else return -EINVAL; break; case RADEON_INFO_FASTFB_WORKING: *value = rdev->fastfb_working; break; case RADEON_INFO_RING_WORKING: if (copy_from_user(value, value_ptr, sizeof(uint32_t))) { DRM_ERROR("copy_from_user %s:%u\n", __func__, __LINE__); return -EFAULT; } switch (*value) { case RADEON_CS_RING_GFX: case RADEON_CS_RING_COMPUTE: *value = rdev->ring[RADEON_RING_TYPE_GFX_INDEX].ready; break; case RADEON_CS_RING_DMA: *value = rdev->ring[R600_RING_TYPE_DMA_INDEX].ready; *value |= rdev->ring[CAYMAN_RING_TYPE_DMA1_INDEX].ready; break; case RADEON_CS_RING_UVD: *value = rdev->ring[R600_RING_TYPE_UVD_INDEX].ready; break; case RADEON_CS_RING_VCE: *value = rdev->ring[TN_RING_TYPE_VCE1_INDEX].ready; break; default: return -EINVAL; } break; case RADEON_INFO_SI_TILE_MODE_ARRAY: if (rdev->family >= CHIP_BONAIRE) { value = rdev->config.cik.tile_mode_array; value_size = sizeof(uint32_t)*32; } else if (rdev->family >= CHIP_TAHITI) { value = rdev->config.si.tile_mode_array; value_size = sizeof(uint32_t)*32; } else { DRM_DEBUG_KMS("tile mode array is si+ only!\n"); return -EINVAL; } break; case RADEON_INFO_CIK_MACROTILE_MODE_ARRAY: if (rdev->family >= CHIP_BONAIRE) { value = rdev->config.cik.macrotile_mode_array; value_size = sizeof(uint32_t)*16; } else { DRM_DEBUG_KMS("macrotile mode array is cik+ only!\n"); return -EINVAL; } break; case RADEON_INFO_SI_CP_DMA_COMPUTE: *value = 1; break; case RADEON_INFO_SI_BACKEND_ENABLED_MASK: if (rdev->family >= CHIP_BONAIRE) { *value = rdev->config.cik.backend_enable_mask; } else if (rdev->family >= CHIP_TAHITI) { *value = rdev->config.si.backend_enable_mask; } else { DRM_DEBUG_KMS("BACKEND_ENABLED_MASK is si+ only!\n"); return -EINVAL; } break; case RADEON_INFO_MAX_SCLK: if ((rdev->pm.pm_method == PM_METHOD_DPM) && rdev->pm.dpm_enabled) *value = rdev->pm.dpm.dyn_state.max_clock_voltage_on_ac.sclk * 10; else *value = rdev->pm.default_sclk * 10; break; case RADEON_INFO_VCE_FW_VERSION: *value = rdev->vce.fw_version; break; case RADEON_INFO_VCE_FB_VERSION: *value = rdev->vce.fb_version; break; case RADEON_INFO_NUM_BYTES_MOVED: value = (uint32_t *)&value64; value_size = sizeof(uint64_t); value64 = atomic64_read(&rdev->num_bytes_moved); break; case RADEON_INFO_VRAM_USAGE: value = (uint32_t *)&value64; value_size = sizeof(uint64_t); man = ttm_manager_type(&rdev->mman.bdev, TTM_PL_VRAM); value64 = ttm_resource_manager_usage(man); break; case RADEON_INFO_GTT_USAGE: value = (uint32_t *)&value64; value_size = sizeof(uint64_t); man = ttm_manager_type(&rdev->mman.bdev, TTM_PL_TT); value64 = ttm_resource_manager_usage(man); break; case RADEON_INFO_ACTIVE_CU_COUNT: if (rdev->family >= CHIP_BONAIRE) *value = rdev->config.cik.active_cus; else if (rdev->family >= CHIP_TAHITI) *value = rdev->config.si.active_cus; else if (rdev->family >= CHIP_CAYMAN) *value = rdev->config.cayman.active_simds; else if (rdev->family >= CHIP_CEDAR) *value = rdev->config.evergreen.active_simds; else if (rdev->family >= CHIP_RV770) *value = rdev->config.rv770.active_simds; else if (rdev->family >= CHIP_R600) *value = rdev->config.r600.active_simds; else *value = 1; break; case RADEON_INFO_CURRENT_GPU_TEMP: /* get temperature in millidegrees C */ if (rdev->asic->pm.get_temperature) *value = radeon_get_temperature(rdev); else *value = 0; break; case RADEON_INFO_CURRENT_GPU_SCLK: /* get sclk in Mhz */ if (rdev->pm.dpm_enabled) *value = radeon_dpm_get_current_sclk(rdev) / 100; else *value = rdev->pm.current_sclk / 100; break; case RADEON_INFO_CURRENT_GPU_MCLK: /* get mclk in Mhz */ if (rdev->pm.dpm_enabled) *value = radeon_dpm_get_current_mclk(rdev) / 100; else *value = rdev->pm.current_mclk / 100; break; case RADEON_INFO_READ_REG: if (copy_from_user(value, value_ptr, sizeof(uint32_t))) { DRM_ERROR("copy_from_user %s:%u\n", __func__, __LINE__); return -EFAULT; } if (radeon_get_allowed_info_register(rdev, *value, value)) return -EINVAL; break; case RADEON_INFO_VA_UNMAP_WORKING: *value = true; break; case RADEON_INFO_GPU_RESET_COUNTER: *value = atomic_read(&rdev->gpu_reset_counter); break; default: DRM_DEBUG_KMS("Invalid request %d\n", info->request); return -EINVAL; } if (copy_to_user(value_ptr, (char *)value, value_size)) { DRM_ERROR("copy_to_user %s:%u\n", __func__, __LINE__); return -EFAULT; } return 0; } /** * radeon_driver_open_kms - drm callback for open * * @dev: drm dev pointer * @file_priv: drm file * * On device open, init vm on cayman+ (all asics). * Returns 0 on success, error on failure. */ int radeon_driver_open_kms(struct drm_device *dev, struct drm_file *file_priv) { struct radeon_device *rdev = dev->dev_private; struct radeon_fpriv *fpriv; struct radeon_vm *vm; int r; file_priv->driver_priv = NULL; r = pm_runtime_get_sync(dev->dev); if (r < 0) { pm_runtime_put_autosuspend(dev->dev); return r; } /* new gpu have virtual address space support */ if (rdev->family >= CHIP_CAYMAN) { fpriv = kzalloc(sizeof(*fpriv), GFP_KERNEL); if (unlikely(!fpriv)) { r = -ENOMEM; goto err_suspend; } if (rdev->accel_working) { vm = &fpriv->vm; r = radeon_vm_init(rdev, vm); if (r) goto err_fpriv; r = radeon_bo_reserve(rdev->ring_tmp_bo.bo, false); if (r) goto err_vm_fini; /* map the ib pool buffer read only into * virtual address space */ vm->ib_bo_va = radeon_vm_bo_add(rdev, vm, rdev->ring_tmp_bo.bo); if (!vm->ib_bo_va) { r = -ENOMEM; goto err_vm_fini; } r = radeon_vm_bo_set_addr(rdev, vm->ib_bo_va, RADEON_VA_IB_OFFSET, RADEON_VM_PAGE_READABLE | RADEON_VM_PAGE_SNOOPED); if (r) goto err_vm_fini; } file_priv->driver_priv = fpriv; } pm_runtime_mark_last_busy(dev->dev); pm_runtime_put_autosuspend(dev->dev); return 0; err_vm_fini: radeon_vm_fini(rdev, vm); err_fpriv: kfree(fpriv); err_suspend: pm_runtime_mark_last_busy(dev->dev); pm_runtime_put_autosuspend(dev->dev); return r; } /** * radeon_driver_postclose_kms - drm callback for post close * * @dev: drm dev pointer * @file_priv: drm file * * On device close, tear down hyperz and cmask filps on r1xx-r5xx * (all asics). And tear down vm on cayman+ (all asics). */ void radeon_driver_postclose_kms(struct drm_device *dev, struct drm_file *file_priv) { struct radeon_device *rdev = dev->dev_private; pm_runtime_get_sync(dev->dev); mutex_lock(&rdev->gem.mutex); if (rdev->hyperz_filp == file_priv) rdev->hyperz_filp = NULL; if (rdev->cmask_filp == file_priv) rdev->cmask_filp = NULL; mutex_unlock(&rdev->gem.mutex); radeon_uvd_free_handles(rdev, file_priv); radeon_vce_free_handles(rdev, file_priv); /* new gpu have virtual address space support */ if (rdev->family >= CHIP_CAYMAN && file_priv->driver_priv) { struct radeon_fpriv *fpriv = file_priv->driver_priv; struct radeon_vm *vm = &fpriv->vm; int r; if (rdev->accel_working) { r = radeon_bo_reserve(rdev->ring_tmp_bo.bo, false); if (!r) { if (vm->ib_bo_va) radeon_vm_bo_rmv(rdev, vm->ib_bo_va); radeon_bo_unreserve(rdev->ring_tmp_bo.bo); } radeon_vm_fini(rdev, vm); } kfree(fpriv); file_priv->driver_priv = NULL; } pm_runtime_mark_last_busy(dev->dev); pm_runtime_put_autosuspend(dev->dev); } /* * VBlank related functions. */ /** * radeon_get_vblank_counter_kms - get frame count * * @crtc: crtc to get the frame count from * * Gets the frame count on the requested crtc (all asics). * Returns frame count on success, -EINVAL on failure. */ u32 radeon_get_vblank_counter_kms(struct drm_crtc *crtc) { struct drm_device *dev = crtc->dev; unsigned int pipe = crtc->index; int vpos, hpos, stat; u32 count; struct radeon_device *rdev = dev->dev_private; if (pipe >= rdev->num_crtc) { DRM_ERROR("Invalid crtc %u\n", pipe); return -EINVAL; } /* The hw increments its frame counter at start of vsync, not at start * of vblank, as is required by DRM core vblank counter handling. * Cook the hw count here to make it appear to the caller as if it * incremented at start of vblank. We measure distance to start of * vblank in vpos. vpos therefore will be >= 0 between start of vblank * and start of vsync, so vpos >= 0 means to bump the hw frame counter * result by 1 to give the proper appearance to caller. */ if (rdev->mode_info.crtcs[pipe]) { /* Repeat readout if needed to provide stable result if * we cross start of vsync during the queries. */ do { count = radeon_get_vblank_counter(rdev, pipe); /* Ask radeon_get_crtc_scanoutpos to return vpos as * distance to start of vblank, instead of regular * vertical scanout pos. */ stat = radeon_get_crtc_scanoutpos( dev, pipe, GET_DISTANCE_TO_VBLANKSTART, &vpos, &hpos, NULL, NULL, &rdev->mode_info.crtcs[pipe]->base.hwmode); } while (count != radeon_get_vblank_counter(rdev, pipe)); if (((stat & (DRM_SCANOUTPOS_VALID | DRM_SCANOUTPOS_ACCURATE)) != (DRM_SCANOUTPOS_VALID | DRM_SCANOUTPOS_ACCURATE))) { DRM_DEBUG_VBL("Query failed! stat %d\n", stat); } else { DRM_DEBUG_VBL("crtc %u: dist from vblank start %d\n", pipe, vpos); /* Bump counter if we are at >= leading edge of vblank, * but before vsync where vpos would turn negative and * the hw counter really increments. */ if (vpos >= 0) count++; } } else { /* Fallback to use value as is. */ count = radeon_get_vblank_counter(rdev, pipe); DRM_DEBUG_VBL("NULL mode info! Returned count may be wrong.\n"); } return count; } /** * radeon_enable_vblank_kms - enable vblank interrupt * * @crtc: crtc to enable vblank interrupt for * * Enable the interrupt on the requested crtc (all asics). * Returns 0 on success, -EINVAL on failure. */ int radeon_enable_vblank_kms(struct drm_crtc *crtc) { struct drm_device *dev = crtc->dev; unsigned int pipe = crtc->index; struct radeon_device *rdev = dev->dev_private; unsigned long irqflags; int r; if (pipe >= rdev->num_crtc) { DRM_ERROR("Invalid crtc %d\n", pipe); return -EINVAL; } spin_lock_irqsave(&rdev->irq.lock, irqflags); rdev->irq.crtc_vblank_int[pipe] = true; r = radeon_irq_set(rdev); spin_unlock_irqrestore(&rdev->irq.lock, irqflags); return r; } /** * radeon_disable_vblank_kms - disable vblank interrupt * * @crtc: crtc to disable vblank interrupt for * * Disable the interrupt on the requested crtc (all asics). */ void radeon_disable_vblank_kms(struct drm_crtc *crtc) { struct drm_device *dev = crtc->dev; unsigned int pipe = crtc->index; struct radeon_device *rdev = dev->dev_private; unsigned long irqflags; if (pipe >= rdev->num_crtc) { DRM_ERROR("Invalid crtc %d\n", pipe); return; } spin_lock_irqsave(&rdev->irq.lock, irqflags); rdev->irq.crtc_vblank_int[pipe] = false; radeon_irq_set(rdev); spin_unlock_irqrestore(&rdev->irq.lock, irqflags); }