From: Christian König Date: Thu, 5 Jul 2012 12:32:00 +0000 (+0200) Subject: drm/radeon: remove vm_manager start/suspend X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=c6105f249a637e1bb2b04b1cad7feaf507d06e8c;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git drm/radeon: remove vm_manager start/suspend Just restore the page table instead. Addressing three problem with this change: 1. Calling vm_manager_suspend in the suspend path is problematic cause it wants to wait for the VM use to end, which in case of a lockup never happens. 2. In case of a locked up memory controller unbinding the VM seems to make it even more unstable, creating an unrecoverable lockup in the end. 3. If we want to backup/restore the leftover ring content we must not unbind VMs in between. Signed-off-by: Christian König Reviewed-by: Alex Deucher --- diff --git a/drivers/gpu/drm/radeon/ni.c b/drivers/gpu/drm/radeon/ni.c index 4004376362ee..ec5307c582f4 100644 --- a/drivers/gpu/drm/radeon/ni.c +++ b/drivers/gpu/drm/radeon/ni.c @@ -1280,9 +1280,11 @@ static int cayman_startup(struct radeon_device *rdev) if (r) return r; - r = radeon_vm_manager_start(rdev); - if (r) + r = radeon_vm_manager_init(rdev); + if (r) { + dev_err(rdev->dev, "vm manager initialization failed (%d).\n", r); return r; + } r = r600_audio_init(rdev); if (r) @@ -1315,7 +1317,6 @@ int cayman_resume(struct radeon_device *rdev) int cayman_suspend(struct radeon_device *rdev) { r600_audio_fini(rdev); - radeon_vm_manager_suspend(rdev); cayman_cp_enable(rdev, false); rdev->ring[RADEON_RING_TYPE_GFX_INDEX].ready = false; evergreen_irq_suspend(rdev); @@ -1392,11 +1393,6 @@ int cayman_init(struct radeon_device *rdev) return r; rdev->accel_working = true; - r = radeon_vm_manager_init(rdev); - if (r) { - dev_err(rdev->dev, "vm manager initialization failed (%d).\n", r); - } - r = cayman_startup(rdev); if (r) { dev_err(rdev->dev, "disabling GPU acceleration\n"); diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h index 8a8c3f82950e..872270c9a0d0 100644 --- a/drivers/gpu/drm/radeon/radeon.h +++ b/drivers/gpu/drm/radeon/radeon.h @@ -1759,8 +1759,6 @@ extern void radeon_ttm_set_active_vram_size(struct radeon_device *rdev, u64 size */ int radeon_vm_manager_init(struct radeon_device *rdev); void radeon_vm_manager_fini(struct radeon_device *rdev); -int radeon_vm_manager_start(struct radeon_device *rdev); -int radeon_vm_manager_suspend(struct radeon_device *rdev); int radeon_vm_init(struct radeon_device *rdev, struct radeon_vm *vm); void radeon_vm_fini(struct radeon_device *rdev, struct radeon_vm *vm); int radeon_vm_bind(struct radeon_device *rdev, struct radeon_vm *vm); diff --git a/drivers/gpu/drm/radeon/radeon_gart.c b/drivers/gpu/drm/radeon/radeon_gart.c index ee11c5073726..56752da4b816 100644 --- a/drivers/gpu/drm/radeon/radeon_gart.c +++ b/drivers/gpu/drm/radeon/radeon_gart.c @@ -282,27 +282,58 @@ void radeon_gart_fini(struct radeon_device *rdev) * * TODO bind a default page at vm initialization for default address */ + int radeon_vm_manager_init(struct radeon_device *rdev) { + struct radeon_vm *vm; + struct radeon_bo_va *bo_va; int r; - rdev->vm_manager.enabled = false; + if (!rdev->vm_manager.enabled) { + /* mark first vm as always in use, it's the system one */ + r = radeon_sa_bo_manager_init(rdev, &rdev->vm_manager.sa_manager, + rdev->vm_manager.max_pfn * 8, + RADEON_GEM_DOMAIN_VRAM); + if (r) { + dev_err(rdev->dev, "failed to allocate vm bo (%dKB)\n", + (rdev->vm_manager.max_pfn * 8) >> 10); + return r; + } - /* mark first vm as always in use, it's the system one */ - r = radeon_sa_bo_manager_init(rdev, &rdev->vm_manager.sa_manager, - rdev->vm_manager.max_pfn * 8, - RADEON_GEM_DOMAIN_VRAM); - if (r) { - dev_err(rdev->dev, "failed to allocate vm bo (%dKB)\n", - (rdev->vm_manager.max_pfn * 8) >> 10); - return r; + r = rdev->vm_manager.funcs->init(rdev); + if (r) + return r; + + rdev->vm_manager.enabled = true; + + r = radeon_sa_bo_manager_start(rdev, &rdev->vm_manager.sa_manager); + if (r) + return r; } - r = rdev->vm_manager.funcs->init(rdev); - if (r == 0) - rdev->vm_manager.enabled = true; + /* restore page table */ + list_for_each_entry(vm, &rdev->vm_manager.lru_vm, list) { + if (vm->id == -1) + continue; - return r; + list_for_each_entry(bo_va, &vm->va, vm_list) { + struct ttm_mem_reg *mem = NULL; + if (bo_va->valid) + mem = &bo_va->bo->tbo.mem; + + bo_va->valid = false; + r = radeon_vm_bo_update_pte(rdev, vm, bo_va->bo, mem); + if (r) { + DRM_ERROR("Failed to update pte for vm %d!\n", vm->id); + } + } + + r = rdev->vm_manager.funcs->bind(rdev, vm, vm->id); + if (r) { + DRM_ERROR("Failed to bind vm %d!\n", vm->id); + } + } + return 0; } /* global mutex must be lock */ @@ -346,27 +377,12 @@ static void radeon_vm_unbind_locked(struct radeon_device *rdev, } void radeon_vm_manager_fini(struct radeon_device *rdev) -{ - if (rdev->vm_manager.sa_manager.bo == NULL) - return; - radeon_vm_manager_suspend(rdev); - rdev->vm_manager.funcs->fini(rdev); - radeon_sa_bo_manager_fini(rdev, &rdev->vm_manager.sa_manager); - rdev->vm_manager.enabled = false; -} - -int radeon_vm_manager_start(struct radeon_device *rdev) -{ - if (rdev->vm_manager.sa_manager.bo == NULL) { - return -EINVAL; - } - return radeon_sa_bo_manager_start(rdev, &rdev->vm_manager.sa_manager); -} - -int radeon_vm_manager_suspend(struct radeon_device *rdev) { struct radeon_vm *vm, *tmp; + if (!rdev->vm_manager.enabled) + return; + mutex_lock(&rdev->vm_manager.lock); /* unbind all active vm */ list_for_each_entry_safe(vm, tmp, &rdev->vm_manager.lru_vm, list) { @@ -374,7 +390,10 @@ int radeon_vm_manager_suspend(struct radeon_device *rdev) } rdev->vm_manager.funcs->fini(rdev); mutex_unlock(&rdev->vm_manager.lock); - return radeon_sa_bo_manager_suspend(rdev, &rdev->vm_manager.sa_manager); + + radeon_sa_bo_manager_suspend(rdev, &rdev->vm_manager.sa_manager); + radeon_sa_bo_manager_fini(rdev, &rdev->vm_manager.sa_manager); + rdev->vm_manager.enabled = false; } /* global mutex must be locked */ diff --git a/drivers/gpu/drm/radeon/si.c b/drivers/gpu/drm/radeon/si.c index 7c2618b9aa34..2b691abef4f7 100644 --- a/drivers/gpu/drm/radeon/si.c +++ b/drivers/gpu/drm/radeon/si.c @@ -3777,9 +3777,11 @@ static int si_startup(struct radeon_device *rdev) return r; } - r = radeon_vm_manager_start(rdev); - if (r) + r = radeon_vm_manager_init(rdev); + if (r) { + dev_err(rdev->dev, "vm manager initialization failed (%d).\n", r); return r; + } return 0; } @@ -3809,7 +3811,6 @@ int si_resume(struct radeon_device *rdev) int si_suspend(struct radeon_device *rdev) { - radeon_vm_manager_suspend(rdev); si_cp_enable(rdev, false); rdev->ring[RADEON_RING_TYPE_GFX_INDEX].ready = false; rdev->ring[CAYMAN_RING_TYPE_CP1_INDEX].ready = false; @@ -3899,11 +3900,6 @@ int si_init(struct radeon_device *rdev) return r; rdev->accel_working = true; - r = radeon_vm_manager_init(rdev); - if (r) { - dev_err(rdev->dev, "vm manager initialization failed (%d).\n", r); - } - r = si_startup(rdev); if (r) { dev_err(rdev->dev, "disabling GPU acceleration\n");