/************************************************************************** * * Copyright © 2009 VMware, Inc., Palo Alto, CA., USA * All Rights Reserved. * * 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, sub license, 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 (including the * next paragraph) 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 NON-INFRINGEMENT. IN NO EVENT SHALL * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS 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. * **************************************************************************/ #include #include #include "vmwgfx_drv.h" #include #include #include #include #include #define VMWGFX_DRIVER_NAME "vmwgfx" #define VMWGFX_DRIVER_DESC "Linux drm driver for VMware graphics devices" #define VMWGFX_CHIP_SVGAII 0 #define VMW_FB_RESERVATION 0 #define VMW_MIN_INITIAL_WIDTH 800 #define VMW_MIN_INITIAL_HEIGHT 600 /** * Fully encoded drm commands. Might move to vmw_drm.h */ #define DRM_IOCTL_VMW_GET_PARAM \ DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_GET_PARAM, \ struct drm_vmw_getparam_arg) #define DRM_IOCTL_VMW_ALLOC_DMABUF \ DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_ALLOC_DMABUF, \ union drm_vmw_alloc_dmabuf_arg) #define DRM_IOCTL_VMW_UNREF_DMABUF \ DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_UNREF_DMABUF, \ struct drm_vmw_unref_dmabuf_arg) #define DRM_IOCTL_VMW_CURSOR_BYPASS \ DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_CURSOR_BYPASS, \ struct drm_vmw_cursor_bypass_arg) #define DRM_IOCTL_VMW_CONTROL_STREAM \ DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_CONTROL_STREAM, \ struct drm_vmw_control_stream_arg) #define DRM_IOCTL_VMW_CLAIM_STREAM \ DRM_IOR(DRM_COMMAND_BASE + DRM_VMW_CLAIM_STREAM, \ struct drm_vmw_stream_arg) #define DRM_IOCTL_VMW_UNREF_STREAM \ DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_UNREF_STREAM, \ struct drm_vmw_stream_arg) #define DRM_IOCTL_VMW_CREATE_CONTEXT \ DRM_IOR(DRM_COMMAND_BASE + DRM_VMW_CREATE_CONTEXT, \ struct drm_vmw_context_arg) #define DRM_IOCTL_VMW_UNREF_CONTEXT \ DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_UNREF_CONTEXT, \ struct drm_vmw_context_arg) #define DRM_IOCTL_VMW_CREATE_SURFACE \ DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_CREATE_SURFACE, \ union drm_vmw_surface_create_arg) #define DRM_IOCTL_VMW_UNREF_SURFACE \ DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_UNREF_SURFACE, \ struct drm_vmw_surface_arg) #define DRM_IOCTL_VMW_REF_SURFACE \ DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_REF_SURFACE, \ union drm_vmw_surface_reference_arg) #define DRM_IOCTL_VMW_EXECBUF \ DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_EXECBUF, \ struct drm_vmw_execbuf_arg) #define DRM_IOCTL_VMW_GET_3D_CAP \ DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_GET_3D_CAP, \ struct drm_vmw_get_3d_cap_arg) #define DRM_IOCTL_VMW_FENCE_WAIT \ DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_FENCE_WAIT, \ struct drm_vmw_fence_wait_arg) #define DRM_IOCTL_VMW_FENCE_SIGNALED \ DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_FENCE_SIGNALED, \ struct drm_vmw_fence_signaled_arg) #define DRM_IOCTL_VMW_FENCE_UNREF \ DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_FENCE_UNREF, \ struct drm_vmw_fence_arg) #define DRM_IOCTL_VMW_FENCE_EVENT \ DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_FENCE_EVENT, \ struct drm_vmw_fence_event_arg) #define DRM_IOCTL_VMW_PRESENT \ DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_PRESENT, \ struct drm_vmw_present_arg) #define DRM_IOCTL_VMW_PRESENT_READBACK \ DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_PRESENT_READBACK, \ struct drm_vmw_present_readback_arg) #define DRM_IOCTL_VMW_UPDATE_LAYOUT \ DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_UPDATE_LAYOUT, \ struct drm_vmw_update_layout_arg) /** * The core DRM version of this macro doesn't account for * DRM_COMMAND_BASE. */ #define VMW_IOCTL_DEF(ioctl, func, flags) \ [DRM_IOCTL_NR(DRM_IOCTL_##ioctl) - DRM_COMMAND_BASE] = {DRM_##ioctl, flags, func, DRM_IOCTL_##ioctl} /** * Ioctl definitions. */ static const struct drm_ioctl_desc vmw_ioctls[] = { VMW_IOCTL_DEF(VMW_GET_PARAM, vmw_getparam_ioctl, DRM_AUTH | DRM_UNLOCKED), VMW_IOCTL_DEF(VMW_ALLOC_DMABUF, vmw_dmabuf_alloc_ioctl, DRM_AUTH | DRM_UNLOCKED), VMW_IOCTL_DEF(VMW_UNREF_DMABUF, vmw_dmabuf_unref_ioctl, DRM_AUTH | DRM_UNLOCKED), VMW_IOCTL_DEF(VMW_CURSOR_BYPASS, vmw_kms_cursor_bypass_ioctl, DRM_MASTER | DRM_CONTROL_ALLOW | DRM_UNLOCKED), VMW_IOCTL_DEF(VMW_CONTROL_STREAM, vmw_overlay_ioctl, DRM_MASTER | DRM_CONTROL_ALLOW | DRM_UNLOCKED), VMW_IOCTL_DEF(VMW_CLAIM_STREAM, vmw_stream_claim_ioctl, DRM_MASTER | DRM_CONTROL_ALLOW | DRM_UNLOCKED), VMW_IOCTL_DEF(VMW_UNREF_STREAM, vmw_stream_unref_ioctl, DRM_MASTER | DRM_CONTROL_ALLOW | DRM_UNLOCKED), VMW_IOCTL_DEF(VMW_CREATE_CONTEXT, vmw_context_define_ioctl, DRM_AUTH | DRM_UNLOCKED), VMW_IOCTL_DEF(VMW_UNREF_CONTEXT, vmw_context_destroy_ioctl, DRM_AUTH | DRM_UNLOCKED), VMW_IOCTL_DEF(VMW_CREATE_SURFACE, vmw_surface_define_ioctl, DRM_AUTH | DRM_UNLOCKED), VMW_IOCTL_DEF(VMW_UNREF_SURFACE, vmw_surface_destroy_ioctl, DRM_AUTH | DRM_UNLOCKED), VMW_IOCTL_DEF(VMW_REF_SURFACE, vmw_surface_reference_ioctl, DRM_AUTH | DRM_UNLOCKED), VMW_IOCTL_DEF(VMW_EXECBUF, vmw_execbuf_ioctl, DRM_AUTH | DRM_UNLOCKED), VMW_IOCTL_DEF(VMW_FENCE_WAIT, vmw_fence_obj_wait_ioctl, DRM_AUTH | DRM_UNLOCKED), VMW_IOCTL_DEF(VMW_FENCE_SIGNALED, vmw_fence_obj_signaled_ioctl, DRM_AUTH | DRM_UNLOCKED), VMW_IOCTL_DEF(VMW_FENCE_UNREF, vmw_fence_obj_unref_ioctl, DRM_AUTH | DRM_UNLOCKED), VMW_IOCTL_DEF(VMW_FENCE_EVENT, vmw_fence_event_ioctl, DRM_AUTH | DRM_UNLOCKED), VMW_IOCTL_DEF(VMW_GET_3D_CAP, vmw_get_cap_3d_ioctl, DRM_AUTH | DRM_UNLOCKED), /* these allow direct access to the framebuffers mark as master only */ VMW_IOCTL_DEF(VMW_PRESENT, vmw_present_ioctl, DRM_MASTER | DRM_AUTH | DRM_UNLOCKED), VMW_IOCTL_DEF(VMW_PRESENT_READBACK, vmw_present_readback_ioctl, DRM_MASTER | DRM_AUTH | DRM_UNLOCKED), VMW_IOCTL_DEF(VMW_UPDATE_LAYOUT, vmw_kms_update_layout_ioctl, DRM_MASTER | DRM_UNLOCKED), }; static struct pci_device_id vmw_pci_id_list[] = { {0x15ad, 0x0405, PCI_ANY_ID, PCI_ANY_ID, 0, 0, VMWGFX_CHIP_SVGAII}, {0, 0, 0} }; MODULE_DEVICE_TABLE(pci, vmw_pci_id_list); static int enable_fbdev = IS_ENABLED(CONFIG_DRM_VMWGFX_FBCON); static int vmw_force_iommu; static int vmw_restrict_iommu; static int vmw_force_coherent; static int vmw_restrict_dma_mask; static int vmw_probe(struct pci_dev *, const struct pci_device_id *); static void vmw_master_init(struct vmw_master *); static int vmwgfx_pm_notifier(struct notifier_block *nb, unsigned long val, void *ptr); MODULE_PARM_DESC(enable_fbdev, "Enable vmwgfx fbdev"); module_param_named(enable_fbdev, enable_fbdev, int, 0600); MODULE_PARM_DESC(force_dma_api, "Force using the DMA API for TTM pages"); module_param_named(force_dma_api, vmw_force_iommu, int, 0600); MODULE_PARM_DESC(restrict_iommu, "Try to limit IOMMU usage for TTM pages"); module_param_named(restrict_iommu, vmw_restrict_iommu, int, 0600); MODULE_PARM_DESC(force_coherent, "Force coherent TTM pages"); module_param_named(force_coherent, vmw_force_coherent, int, 0600); MODULE_PARM_DESC(restrict_dma_mask, "Restrict DMA mask to 44 bits with IOMMU"); module_param_named(restrict_dma_mask, vmw_restrict_dma_mask, int, 0600); static void vmw_print_capabilities(uint32_t capabilities) { DRM_INFO("Capabilities:\n"); if (capabilities & SVGA_CAP_RECT_COPY) DRM_INFO(" Rect copy.\n"); if (capabilities & SVGA_CAP_CURSOR) DRM_INFO(" Cursor.\n"); if (capabilities & SVGA_CAP_CURSOR_BYPASS) DRM_INFO(" Cursor bypass.\n"); if (capabilities & SVGA_CAP_CURSOR_BYPASS_2) DRM_INFO(" Cursor bypass 2.\n"); if (capabilities & SVGA_CAP_8BIT_EMULATION) DRM_INFO(" 8bit emulation.\n"); if (capabilities & SVGA_CAP_ALPHA_CURSOR) DRM_INFO(" Alpha cursor.\n"); if (capabilities & SVGA_CAP_3D) DRM_INFO(" 3D.\n"); if (capabilities & SVGA_CAP_EXTENDED_FIFO) DRM_INFO(" Extended Fifo.\n"); if (capabilities & SVGA_CAP_MULTIMON) DRM_INFO(" Multimon.\n"); if (capabilities & SVGA_CAP_PITCHLOCK) DRM_INFO(" Pitchlock.\n"); if (capabilities & SVGA_CAP_IRQMASK) DRM_INFO(" Irq mask.\n"); if (capabilities & SVGA_CAP_DISPLAY_TOPOLOGY) DRM_INFO(" Display Topology.\n"); if (capabilities & SVGA_CAP_GMR) DRM_INFO(" GMR.\n"); if (capabilities & SVGA_CAP_TRACES) DRM_INFO(" Traces.\n"); if (capabilities & SVGA_CAP_GMR2) DRM_INFO(" GMR2.\n"); if (capabilities & SVGA_CAP_SCREEN_OBJECT_2) DRM_INFO(" Screen Object 2.\n"); if (capabilities & SVGA_CAP_COMMAND_BUFFERS) DRM_INFO(" Command Buffers.\n"); if (capabilities & SVGA_CAP_CMD_BUFFERS_2) DRM_INFO(" Command Buffers 2.\n"); if (capabilities & SVGA_CAP_GBOBJECTS) DRM_INFO(" Guest Backed Resources.\n"); } /** * vmw_execbuf_prepare_dummy_query - Initialize a query result structure at * the start of a buffer object. * * @dev_priv: The device private structure. * * This function will idle the buffer using an uninterruptible wait, then * map the first page and initialize a pending occlusion query result structure, * Finally it will unmap the buffer. * * TODO: Since we're only mapping a single page, we should optimize the map * to use kmap_atomic / iomap_atomic. */ static void vmw_dummy_query_bo_prepare(struct vmw_private *dev_priv) { struct ttm_bo_kmap_obj map; volatile SVGA3dQueryResult *result; bool dummy; int ret; struct ttm_bo_device *bdev = &dev_priv->bdev; struct ttm_buffer_object *bo = dev_priv->dummy_query_bo; ttm_bo_reserve(bo, false, false, false, 0); spin_lock(&bdev->fence_lock); ret = ttm_bo_wait(bo, false, false, false); spin_unlock(&bdev->fence_lock); if (unlikely(ret != 0)) (void) vmw_fallback_wait(dev_priv, false, true, 0, false, 10*HZ); ret = ttm_bo_kmap(bo, 0, 1, &map); if (likely(ret == 0)) { result = ttm_kmap_obj_virtual(&map, &dummy); result->totalSize = sizeof(*result); result->state = SVGA3D_QUERYSTATE_PENDING; result->result32 = 0xff; ttm_bo_kunmap(&map); } else DRM_ERROR("Dummy query buffer map failed.\n"); ttm_bo_unreserve(bo); } /** * vmw_dummy_query_bo_create - create a bo to hold a dummy query result * * @dev_priv: A device private structure. * * This function creates a small buffer object that holds the query * result for dummy queries emitted as query barriers. * No interruptible waits are done within this function. * * Returns an error if bo creation fails. */ static int vmw_dummy_query_bo_create(struct vmw_private *dev_priv) { return ttm_bo_create(&dev_priv->bdev, PAGE_SIZE, ttm_bo_type_device, &vmw_vram_sys_placement, 0, false, NULL, &dev_priv->dummy_query_bo); } static int vmw_request_device(struct vmw_private *dev_priv) { int ret; ret = vmw_fifo_init(dev_priv, &dev_priv->fifo); if (unlikely(ret != 0)) { DRM_ERROR("Unable to initialize FIFO.\n"); return ret; } vmw_fence_fifo_up(dev_priv->fman); ret = vmw_dummy_query_bo_create(dev_priv); if (unlikely(ret != 0)) goto out_no_query_bo; vmw_dummy_query_bo_prepare(dev_priv); return 0; out_no_query_bo: vmw_fence_fifo_down(dev_priv->fman); vmw_fifo_release(dev_priv, &dev_priv->fifo); return ret; } static void vmw_release_device(struct vmw_private *dev_priv) { /* * Previous destructions should've released * the pinned bo. */ BUG_ON(dev_priv->pinned_bo != NULL); ttm_bo_unref(&dev_priv->dummy_query_bo); vmw_fence_fifo_down(dev_priv->fman); vmw_fifo_release(dev_priv, &dev_priv->fifo); } /** * Increase the 3d resource refcount. * If the count was prevously zero, initialize the fifo, switching to svga * mode. Note that the master holds a ref as well, and may request an * explicit switch to svga mode if fb is not running, using @unhide_svga. */ int vmw_3d_resource_inc(struct vmw_private *dev_priv, bool unhide_svga) { int ret = 0; mutex_lock(&dev_priv->release_mutex); if (unlikely(dev_priv->num_3d_resources++ == 0)) { ret = vmw_request_device(dev_priv); if (unlikely(ret != 0)) --dev_priv->num_3d_resources; } else if (unhide_svga) { mutex_lock(&dev_priv->hw_mutex); vmw_write(dev_priv, SVGA_REG_ENABLE, vmw_read(dev_priv, SVGA_REG_ENABLE) & ~SVGA_REG_ENABLE_HIDE); mutex_unlock(&dev_priv->hw_mutex); } mutex_unlock(&dev_priv->release_mutex); return ret; } /** * Decrease the 3d resource refcount. * If the count reaches zero, disable the fifo, switching to vga mode. * Note that the master holds a refcount as well, and may request an * explicit switch to vga mode when it releases its refcount to account * for the situation of an X server vt switch to VGA with 3d resources * active. */ void vmw_3d_resource_dec(struct vmw_private *dev_priv, bool hide_svga) { int32_t n3d; mutex_lock(&dev_priv->release_mutex); if (unlikely(--dev_priv->num_3d_resources == 0)) vmw_release_device(dev_priv); else if (hide_svga) { mutex_lock(&dev_priv->hw_mutex); vmw_write(dev_priv, SVGA_REG_ENABLE, vmw_read(dev_priv, SVGA_REG_ENABLE) | SVGA_REG_ENABLE_HIDE); mutex_unlock(&dev_priv->hw_mutex); } n3d = (int32_t) dev_priv->num_3d_resources; mutex_unlock(&dev_priv->release_mutex); BUG_ON(n3d < 0); } /** * Sets the initial_[width|height] fields on the given vmw_private. * * It does so by reading SVGA_REG_[WIDTH|HEIGHT] regs and then * clamping the value to fb_max_[width|height] fields and the * VMW_MIN_INITIAL_[WIDTH|HEIGHT]. * If the values appear to be invalid, set them to * VMW_MIN_INITIAL_[WIDTH|HEIGHT]. */ static void vmw_get_initial_size(struct vmw_private *dev_priv) { uint32_t width; uint32_t height; width = vmw_read(dev_priv, SVGA_REG_WIDTH); height = vmw_read(dev_priv, SVGA_REG_HEIGHT); width = max_t(uint32_t, width, VMW_MIN_INITIAL_WIDTH); height = max_t(uint32_t, height, VMW_MIN_INITIAL_HEIGHT); if (width > dev_priv->fb_max_width || height > dev_priv->fb_max_height) { /* * This is a host error and shouldn't occur. */ width = VMW_MIN_INITIAL_WIDTH; height = VMW_MIN_INITIAL_HEIGHT; } dev_priv->initial_width = width; dev_priv->initial_height = height; } /** * vmw_dma_select_mode - Determine how DMA mappings should be set up for this * system. * * @dev_priv: Pointer to a struct vmw_private * * This functions tries to determine the IOMMU setup and what actions * need to be taken by the driver to make system pages visible to the * device. * If this function decides that DMA is not possible, it returns -EINVAL. * The driver may then try to disable features of the device that require * DMA. */ static int vmw_dma_select_mode(struct vmw_private *dev_priv) { static const char *names[vmw_dma_map_max] = { [vmw_dma_phys] = "Using physical TTM page addresses.", [vmw_dma_alloc_coherent] = "Using coherent TTM pages.", [vmw_dma_map_populate] = "Keeping DMA mappings.", [vmw_dma_map_bind] = "Giving up DMA mappings early."}; #ifdef CONFIG_X86 const struct dma_map_ops *dma_ops = get_dma_ops(dev_priv->dev->dev); #ifdef CONFIG_INTEL_IOMMU if (intel_iommu_enabled) { dev_priv->map_mode = vmw_dma_map_populate; goto out_fixup; } #endif if (!(vmw_force_iommu || vmw_force_coherent)) { dev_priv->map_mode = vmw_dma_phys; DRM_INFO("DMA map mode: %s\n", names[dev_priv->map_mode]); return 0; } dev_priv->map_mode = vmw_dma_map_populate; if (dma_ops->sync_single_for_cpu) dev_priv->map_mode = vmw_dma_alloc_coherent; #ifdef CONFIG_SWIOTLB if (swiotlb_nr_tbl() == 0) dev_priv->map_mode = vmw_dma_map_populate; #endif #ifdef CONFIG_INTEL_IOMMU out_fixup: #endif if (dev_priv->map_mode == vmw_dma_map_populate && vmw_restrict_iommu) dev_priv->map_mode = vmw_dma_map_bind; if (vmw_force_coherent) dev_priv->map_mode = vmw_dma_alloc_coherent; #if !defined(CONFIG_SWIOTLB) && !defined(CONFIG_INTEL_IOMMU) /* * No coherent page pool */ if (dev_priv->map_mode == vmw_dma_alloc_coherent) return -EINVAL; #endif #else /* CONFIG_X86 */ dev_priv->map_mode = vmw_dma_map_populate; #endif /* CONFIG_X86 */ DRM_INFO("DMA map mode: %s\n", names[dev_priv->map_mode]); return 0; } /** * vmw_dma_masks - set required page- and dma masks * * @dev: Pointer to struct drm-device * * With 32-bit we can only handle 32 bit PFNs. Optionally set that * restriction also for 64-bit systems. */ #ifdef CONFIG_INTEL_IOMMU static int vmw_dma_masks(struct vmw_private *dev_priv) { struct drm_device *dev = dev_priv->dev; if (intel_iommu_enabled && (sizeof(unsigned long) == 4 || vmw_restrict_dma_mask)) { DRM_INFO("Restricting DMA addresses to 44 bits.\n"); return dma_set_mask(dev->dev, DMA_BIT_MASK(44)); } return 0; } #else static int vmw_dma_masks(struct vmw_private *dev_priv) { return 0; } #endif static int vmw_driver_load(struct drm_device *dev, unsigned long chipset) { struct vmw_private *dev_priv; int ret; uint32_t svga_id; enum vmw_res_type i; bool refuse_dma = false; dev_priv = kzalloc(sizeof(*dev_priv), GFP_KERNEL); if (unlikely(dev_priv == NULL)) { DRM_ERROR("Failed allocating a device private struct.\n"); return -ENOMEM; } pci_set_master(dev->pdev); dev_priv->dev = dev; dev_priv->vmw_chipset = chipset; dev_priv->last_read_seqno = (uint32_t) -100; mutex_init(&dev_priv->hw_mutex); mutex_init(&dev_priv->cmdbuf_mutex); mutex_init(&dev_priv->release_mutex); rwlock_init(&dev_priv->resource_lock); for (i = vmw_res_context; i < vmw_res_max; ++i) { idr_init(&dev_priv->res_idr[i]); INIT_LIST_HEAD(&dev_priv->res_lru[i]); } mutex_init(&dev_priv->init_mutex); init_waitqueue_head(&dev_priv->fence_queue); init_waitqueue_head(&dev_priv->fifo_queue); dev_priv->fence_queue_waiters = 0; atomic_set(&dev_priv->fifo_queue_waiters, 0); dev_priv->used_memory_size = 0; dev_priv->io_start = pci_resource_start(dev->pdev, 0); dev_priv->vram_start = pci_resource_start(dev->pdev, 1); dev_priv->mmio_start = pci_resource_start(dev->pdev, 2); dev_priv->enable_fb = enable_fbdev; mutex_lock(&dev_priv->hw_mutex); vmw_write(dev_priv, SVGA_REG_ID, SVGA_ID_2); svga_id = vmw_read(dev_priv, SVGA_REG_ID); if (svga_id != SVGA_ID_2) { ret = -ENOSYS; DRM_ERROR("Unsupported SVGA ID 0x%x\n", svga_id); mutex_unlock(&dev_priv->hw_mutex); goto out_err0; } dev_priv->capabilities = vmw_read(dev_priv, SVGA_REG_CAPABILITIES); ret = vmw_dma_select_mode(dev_priv); if (unlikely(ret != 0)) { DRM_INFO("Restricting capabilities due to IOMMU setup.\n"); refuse_dma = true; } dev_priv->vram_size = vmw_read(dev_priv, SVGA_REG_VRAM_SIZE); dev_priv->mmio_size = vmw_read(dev_priv, SVGA_REG_MEM_SIZE); dev_priv->fb_max_width = vmw_read(dev_priv, SVGA_REG_MAX_WIDTH); dev_priv->fb_max_height = vmw_read(dev_priv, SVGA_REG_MAX_HEIGHT); vmw_get_initial_size(dev_priv); if (dev_priv->capabilities & SVGA_CAP_GMR2) { dev_priv->max_gmr_ids = vmw_read(dev_priv, SVGA_REG_GMR_MAX_IDS); dev_priv->max_gmr_pages = vmw_read(dev_priv, SVGA_REG_GMRS_MAX_PAGES); dev_priv->memory_size = vmw_read(dev_priv, SVGA_REG_MEMORY_SIZE); dev_priv->memory_size -= dev_priv->vram_size; } else { /* * An arbitrary limit of 512MiB on surface * memory. But all HWV8 hardware supports GMR2. */ dev_priv->memory_size = 512*1024*1024; } ret = vmw_dma_masks(dev_priv); if (unlikely(ret != 0)) goto out_err0; dev_priv->prim_bb_mem = dev_priv->vram_size; mutex_unlock(&dev_priv->hw_mutex); vmw_print_capabilities(dev_priv->capabilities); if (dev_priv->capabilities & SVGA_CAP_GMR2) { DRM_INFO("Max GMR ids is %u\n", (unsigned)dev_priv->max_gmr_ids); DRM_INFO("Max number of GMR pages is %u\n", (unsigned)dev_priv->max_gmr_pages); DRM_INFO("Max dedicated hypervisor surface memory is %u kiB\n", (unsigned)dev_priv->memory_size / 1024); } DRM_INFO("Maximum display memory size is %u kiB\n", dev_priv->prim_bb_mem / 1024); DRM_INFO("VRAM at 0x%08x size is %u kiB\n", dev_priv->vram_start, dev_priv->vram_size / 1024); DRM_INFO("MMIO at 0x%08x size is %u kiB\n", dev_priv->mmio_start, dev_priv->mmio_size / 1024); ret = vmw_ttm_global_init(dev_priv); if (unlikely(ret != 0)) goto out_err0; vmw_master_init(&dev_priv->fbdev_master); ttm_lock_set_kill(&dev_priv->fbdev_master.lock, false, SIGTERM); dev_priv->active_master = &dev_priv->fbdev_master; ret = ttm_bo_device_init(&dev_priv->bdev, dev_priv->bo_global_ref.ref.object, &vmw_bo_driver, VMWGFX_FILE_PAGE_OFFSET, false); if (unlikely(ret != 0)) { DRM_ERROR("Failed initializing TTM buffer object driver.\n"); goto out_err1; } ret = ttm_bo_init_mm(&dev_priv->bdev, TTM_PL_VRAM, (dev_priv->vram_size >> PAGE_SHIFT)); if (unlikely(ret != 0)) { DRM_ERROR("Failed initializing memory manager for VRAM.\n"); goto out_err2; } dev_priv->has_gmr = true; if (((dev_priv->capabilities & (SVGA_CAP_GMR | SVGA_CAP_GMR2)) == 0) || refuse_dma || ttm_bo_init_mm(&dev_priv->bdev, VMW_PL_GMR, dev_priv->max_gmr_ids) != 0) { DRM_INFO("No GMR memory available. " "Graphics memory resources are very limited.\n"); dev_priv->has_gmr = false; } dev_priv->mmio_mtrr = arch_phys_wc_add(dev_priv->mmio_start, dev_priv->mmio_size); dev_priv->mmio_virt = ioremap_wc(dev_priv->mmio_start, dev_priv->mmio_size); if (unlikely(dev_priv->mmio_virt == NULL)) { ret = -ENOMEM; DRM_ERROR("Failed mapping MMIO.\n"); goto out_err3; } /* Need mmio memory to check for fifo pitchlock cap. */ if (!(dev_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY) && !(dev_priv->capabilities & SVGA_CAP_PITCHLOCK) && !vmw_fifo_have_pitchlock(dev_priv)) { ret = -ENOSYS; DRM_ERROR("Hardware has no pitchlock\n"); goto out_err4; } dev_priv->tdev = ttm_object_device_init (dev_priv->mem_global_ref.object, 12, &vmw_prime_dmabuf_ops); if (unlikely(dev_priv->tdev == NULL)) { DRM_ERROR("Unable to initialize TTM object management.\n"); ret = -ENOMEM; goto out_err4; } dev->dev_private = dev_priv; ret = pci_request_regions(dev->pdev, "vmwgfx probe"); dev_priv->stealth = (ret != 0); if (dev_priv->stealth) { /** * Request at least the mmio PCI resource. */ DRM_INFO("It appears like vesafb is loaded. " "Ignore above error if any.\n"); ret = pci_request_region(dev->pdev, 2, "vmwgfx stealth probe"); if (unlikely(ret != 0)) { DRM_ERROR("Failed reserving the SVGA MMIO resource.\n"); goto out_no_device; } } if (dev_priv->capabilities & SVGA_CAP_IRQMASK) { ret = drm_irq_install(dev); if (ret != 0) { DRM_ERROR("Failed installing irq: %d\n", ret); goto out_no_irq; } } dev_priv->fman = vmw_fence_manager_init(dev_priv); if (unlikely(dev_priv->fman == NULL)) { ret = -ENOMEM; goto out_no_fman; } vmw_kms_save_vga(dev_priv); /* Start kms and overlay systems, needs fifo. */ ret = vmw_kms_init(dev_priv); if (unlikely(ret != 0)) goto out_no_kms; vmw_overlay_init(dev_priv); if (dev_priv->enable_fb) { ret = vmw_3d_resource_inc(dev_priv, true); if (unlikely(ret != 0)) goto out_no_fifo; vmw_fb_init(dev_priv); } dev_priv->pm_nb.notifier_call = vmwgfx_pm_notifier; register_pm_notifier(&dev_priv->pm_nb); return 0; out_no_fifo: vmw_overlay_close(dev_priv); vmw_kms_close(dev_priv); out_no_kms: vmw_kms_restore_vga(dev_priv); vmw_fence_manager_takedown(dev_priv->fman); out_no_fman: if (dev_priv->capabilities & SVGA_CAP_IRQMASK) drm_irq_uninstall(dev_priv->dev); out_no_irq: if (dev_priv->stealth) pci_release_region(dev->pdev, 2); else pci_release_regions(dev->pdev); out_no_device: ttm_object_device_release(&dev_priv->tdev); out_err4: iounmap(dev_priv->mmio_virt); out_err3: arch_phys_wc_del(dev_priv->mmio_mtrr); if (dev_priv->has_gmr) (void) ttm_bo_clean_mm(&dev_priv->bdev, VMW_PL_GMR); (void)ttm_bo_clean_mm(&dev_priv->bdev, TTM_PL_VRAM); out_err2: (void)ttm_bo_device_release(&dev_priv->bdev); out_err1: vmw_ttm_global_release(dev_priv); out_err0: for (i = vmw_res_context; i < vmw_res_max; ++i) idr_destroy(&dev_priv->res_idr[i]); kfree(dev_priv); return ret; } static int vmw_driver_unload(struct drm_device *dev) { struct vmw_private *dev_priv = vmw_priv(dev); enum vmw_res_type i; unregister_pm_notifier(&dev_priv->pm_nb); if (dev_priv->ctx.res_ht_initialized) drm_ht_remove(&dev_priv->ctx.res_ht); if (dev_priv->ctx.cmd_bounce) vfree(dev_priv->ctx.cmd_bounce); if (dev_priv->enable_fb) { vmw_fb_close(dev_priv); vmw_kms_restore_vga(dev_priv); vmw_3d_resource_dec(dev_priv, false); } vmw_kms_close(dev_priv); vmw_overlay_close(dev_priv); vmw_fence_manager_takedown(dev_priv->fman); if (dev_priv->capabilities & SVGA_CAP_IRQMASK) drm_irq_uninstall(dev_priv->dev); if (dev_priv->stealth) pci_release_region(dev->pdev, 2); else pci_release_regions(dev->pdev); ttm_object_device_release(&dev_priv->tdev); iounmap(dev_priv->mmio_virt); arch_phys_wc_del(dev_priv->mmio_mtrr); if (dev_priv->has_gmr) (void)ttm_bo_clean_mm(&dev_priv->bdev, VMW_PL_GMR); (void)ttm_bo_clean_mm(&dev_priv->bdev, TTM_PL_VRAM); (void)ttm_bo_device_release(&dev_priv->bdev); vmw_ttm_global_release(dev_priv); for (i = vmw_res_context; i < vmw_res_max; ++i) idr_destroy(&dev_priv->res_idr[i]); kfree(dev_priv); return 0; } static void vmw_preclose(struct drm_device *dev, struct drm_file *file_priv) { struct vmw_fpriv *vmw_fp = vmw_fpriv(file_priv); struct vmw_private *dev_priv = vmw_priv(dev); vmw_event_fence_fpriv_gone(dev_priv->fman, &vmw_fp->fence_events); } static void vmw_postclose(struct drm_device *dev, struct drm_file *file_priv) { struct vmw_fpriv *vmw_fp; vmw_fp = vmw_fpriv(file_priv); if (vmw_fp->locked_master) { struct vmw_master *vmaster = vmw_master(vmw_fp->locked_master); ttm_lock_set_kill(&vmaster->lock, true, SIGTERM); ttm_vt_unlock(&vmaster->lock); drm_master_put(&vmw_fp->locked_master); } ttm_object_file_release(&vmw_fp->tfile); kfree(vmw_fp); } static int vmw_driver_open(struct drm_device *dev, struct drm_file *file_priv) { struct vmw_private *dev_priv = vmw_priv(dev); struct vmw_fpriv *vmw_fp; int ret = -ENOMEM; vmw_fp = kzalloc(sizeof(*vmw_fp), GFP_KERNEL); if (unlikely(vmw_fp == NULL)) return ret; INIT_LIST_HEAD(&vmw_fp->fence_events); vmw_fp->tfile = ttm_object_file_init(dev_priv->tdev, 10); if (unlikely(vmw_fp->tfile == NULL)) goto out_no_tfile; file_priv->driver_priv = vmw_fp; dev_priv->bdev.dev_mapping = dev->dev_mapping; return 0; out_no_tfile: kfree(vmw_fp); return ret; } static long vmw_unlocked_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) { struct drm_file *file_priv = filp->private_data; struct drm_device *dev = file_priv->minor->dev; unsigned int nr = DRM_IOCTL_NR(cmd); /* * Do extra checking on driver private ioctls. */ if ((nr >= DRM_COMMAND_BASE) && (nr < DRM_COMMAND_END) && (nr < DRM_COMMAND_BASE + dev->driver->num_ioctls)) { const struct drm_ioctl_desc *ioctl = &vmw_ioctls[nr - DRM_COMMAND_BASE]; if (unlikely(ioctl->cmd_drv != cmd)) { DRM_ERROR("Invalid command format, ioctl %d\n", nr - DRM_COMMAND_BASE); return -EINVAL; } } return drm_ioctl(filp, cmd, arg); } static void vmw_lastclose(struct drm_device *dev) { struct drm_crtc *crtc; struct drm_mode_set set; int ret; set.x = 0; set.y = 0; set.fb = NULL; set.mode = NULL; set.connectors = NULL; set.num_connectors = 0; list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { set.crtc = crtc; ret = drm_mode_set_config_internal(&set); WARN_ON(ret != 0); } } static void vmw_master_init(struct vmw_master *vmaster) { ttm_lock_init(&vmaster->lock); INIT_LIST_HEAD(&vmaster->fb_surf); mutex_init(&vmaster->fb_surf_mutex); } static int vmw_master_create(struct drm_device *dev, struct drm_master *master) { struct vmw_master *vmaster; vmaster = kzalloc(sizeof(*vmaster), GFP_KERNEL); if (unlikely(vmaster == NULL)) return -ENOMEM; vmw_master_init(vmaster); ttm_lock_set_kill(&vmaster->lock, true, SIGTERM); master->driver_priv = vmaster; return 0; } static void vmw_master_destroy(struct drm_device *dev, struct drm_master *master) { struct vmw_master *vmaster = vmw_master(master); master->driver_priv = NULL; kfree(vmaster); } static int vmw_master_set(struct drm_device *dev, struct drm_file *file_priv, bool from_open) { struct vmw_private *dev_priv = vmw_priv(dev); struct vmw_fpriv *vmw_fp = vmw_fpriv(file_priv); struct vmw_master *active = dev_priv->active_master; struct vmw_master *vmaster = vmw_master(file_priv->master); int ret = 0; if (!dev_priv->enable_fb) { ret = vmw_3d_resource_inc(dev_priv, true); if (unlikely(ret != 0)) return ret; vmw_kms_save_vga(dev_priv); mutex_lock(&dev_priv->hw_mutex); vmw_write(dev_priv, SVGA_REG_TRACES, 0); mutex_unlock(&dev_priv->hw_mutex); } if (active) { BUG_ON(active != &dev_priv->fbdev_master); ret = ttm_vt_lock(&active->lock, false, vmw_fp->tfile); if (unlikely(ret != 0)) goto out_no_active_lock; ttm_lock_set_kill(&active->lock, true, SIGTERM); ret = ttm_bo_evict_mm(&dev_priv->bdev, TTM_PL_VRAM); if (unlikely(ret != 0)) { DRM_ERROR("Unable to clean VRAM on " "master drop.\n"); } dev_priv->active_master = NULL; } ttm_lock_set_kill(&vmaster->lock, false, SIGTERM); if (!from_open) { ttm_vt_unlock(&vmaster->lock); BUG_ON(vmw_fp->locked_master != file_priv->master); drm_master_put(&vmw_fp->locked_master); } dev_priv->active_master = vmaster; return 0; out_no_active_lock: if (!dev_priv->enable_fb) { vmw_kms_restore_vga(dev_priv); vmw_3d_resource_dec(dev_priv, true); mutex_lock(&dev_priv->hw_mutex); vmw_write(dev_priv, SVGA_REG_TRACES, 1); mutex_unlock(&dev_priv->hw_mutex); } return ret; } static void vmw_master_drop(struct drm_device *dev, struct drm_file *file_priv, bool from_release) { struct vmw_private *dev_priv = vmw_priv(dev); struct vmw_fpriv *vmw_fp = vmw_fpriv(file_priv); struct vmw_master *vmaster = vmw_master(file_priv->master); int ret; /** * Make sure the master doesn't disappear while we have * it locked. */ vmw_fp->locked_master = drm_master_get(file_priv->master); ret = ttm_vt_lock(&vmaster->lock, false, vmw_fp->tfile); if (unlikely((ret != 0))) { DRM_ERROR("Unable to lock TTM at VT switch.\n"); drm_master_put(&vmw_fp->locked_master); } ttm_lock_set_kill(&vmaster->lock, false, SIGTERM); vmw_execbuf_release_pinned_bo(dev_priv); if (!dev_priv->enable_fb) { ret = ttm_bo_evict_mm(&dev_priv->bdev, TTM_PL_VRAM); if (unlikely(ret != 0)) DRM_ERROR("Unable to clean VRAM on master drop.\n"); vmw_kms_restore_vga(dev_priv); vmw_3d_resource_dec(dev_priv, true); mutex_lock(&dev_priv->hw_mutex); vmw_write(dev_priv, SVGA_REG_TRACES, 1); mutex_unlock(&dev_priv->hw_mutex); } dev_priv->active_master = &dev_priv->fbdev_master; ttm_lock_set_kill(&dev_priv->fbdev_master.lock, false, SIGTERM); ttm_vt_unlock(&dev_priv->fbdev_master.lock); if (dev_priv->enable_fb) vmw_fb_on(dev_priv); } static void vmw_remove(struct pci_dev *pdev) { struct drm_device *dev = pci_get_drvdata(pdev); drm_put_dev(dev); } static int vmwgfx_pm_notifier(struct notifier_block *nb, unsigned long val, void *ptr) { struct vmw_private *dev_priv = container_of(nb, struct vmw_private, pm_nb); struct vmw_master *vmaster = dev_priv->active_master; switch (val) { case PM_HIBERNATION_PREPARE: case PM_SUSPEND_PREPARE: ttm_suspend_lock(&vmaster->lock); /** * This empties VRAM and unbinds all GMR bindings. * Buffer contents is moved to swappable memory. */ vmw_execbuf_release_pinned_bo(dev_priv); vmw_resource_evict_all(dev_priv); ttm_bo_swapout_all(&dev_priv->bdev); break; case PM_POST_HIBERNATION: case PM_POST_SUSPEND: case PM_POST_RESTORE: ttm_suspend_unlock(&vmaster->lock); break; case PM_RESTORE_PREPARE: break; default: break; } return 0; } /** * These might not be needed with the virtual SVGA device. */ static int vmw_pci_suspend(struct pci_dev *pdev, pm_message_t state) { struct drm_device *dev = pci_get_drvdata(pdev); struct vmw_private *dev_priv = vmw_priv(dev); if (dev_priv->num_3d_resources != 0) { DRM_INFO("Can't suspend or hibernate " "while 3D resources are active.\n"); return -EBUSY; } pci_save_state(pdev); pci_disable_device(pdev); pci_set_power_state(pdev, PCI_D3hot); return 0; } static int vmw_pci_resume(struct pci_dev *pdev) { pci_set_power_state(pdev, PCI_D0); pci_restore_state(pdev); return pci_enable_device(pdev); } static int vmw_pm_suspend(struct device *kdev) { struct pci_dev *pdev = to_pci_dev(kdev); struct pm_message dummy; dummy.event = 0; return vmw_pci_suspend(pdev, dummy); } static int vmw_pm_resume(struct device *kdev) { struct pci_dev *pdev = to_pci_dev(kdev); return vmw_pci_resume(pdev); } static int vmw_pm_prepare(struct device *kdev) { struct pci_dev *pdev = to_pci_dev(kdev); struct drm_device *dev = pci_get_drvdata(pdev); struct vmw_private *dev_priv = vmw_priv(dev); /** * Release 3d reference held by fbdev and potentially * stop fifo. */ dev_priv->suspended = true; if (dev_priv->enable_fb) vmw_3d_resource_dec(dev_priv, true); if (dev_priv->num_3d_resources != 0) { DRM_INFO("Can't suspend or hibernate " "while 3D resources are active.\n"); if (dev_priv->enable_fb) vmw_3d_resource_inc(dev_priv, true); dev_priv->suspended = false; return -EBUSY; } return 0; } static void vmw_pm_complete(struct device *kdev) { struct pci_dev *pdev = to_pci_dev(kdev); struct drm_device *dev = pci_get_drvdata(pdev); struct vmw_private *dev_priv = vmw_priv(dev); mutex_lock(&dev_priv->hw_mutex); vmw_write(dev_priv, SVGA_REG_ID, SVGA_ID_2); (void) vmw_read(dev_priv, SVGA_REG_ID); mutex_unlock(&dev_priv->hw_mutex); /** * Reclaim 3d reference held by fbdev and potentially * start fifo. */ if (dev_priv->enable_fb) vmw_3d_resource_inc(dev_priv, false); dev_priv->suspended = false; } static const struct dev_pm_ops vmw_pm_ops = { .prepare = vmw_pm_prepare, .complete = vmw_pm_complete, .suspend = vmw_pm_suspend, .resume = vmw_pm_resume, }; static const struct file_operations vmwgfx_driver_fops = { .owner = THIS_MODULE, .open = drm_open, .release = drm_release, .unlocked_ioctl = vmw_unlocked_ioctl, .mmap = vmw_mmap, .poll = vmw_fops_poll, .read = vmw_fops_read, #if defined(CONFIG_COMPAT) .compat_ioctl = drm_compat_ioctl, #endif .llseek = noop_llseek, }; static struct drm_driver driver = { .driver_features = DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED | DRIVER_MODESET | DRIVER_PRIME, .load = vmw_driver_load, .unload = vmw_driver_unload, .lastclose = vmw_lastclose, .irq_preinstall = vmw_irq_preinstall, .irq_postinstall = vmw_irq_postinstall, .irq_uninstall = vmw_irq_uninstall, .irq_handler = vmw_irq_handler, .get_vblank_counter = vmw_get_vblank_counter, .enable_vblank = vmw_enable_vblank, .disable_vblank = vmw_disable_vblank, .ioctls = vmw_ioctls, .num_ioctls = DRM_ARRAY_SIZE(vmw_ioctls), .master_create = vmw_master_create, .master_destroy = vmw_master_destroy, .master_set = vmw_master_set, .master_drop = vmw_master_drop, .open = vmw_driver_open, .preclose = vmw_preclose, .postclose = vmw_postclose, .dumb_create = vmw_dumb_create, .dumb_map_offset = vmw_dumb_map_offset, .dumb_destroy = vmw_dumb_destroy, .prime_fd_to_handle = vmw_prime_fd_to_handle, .prime_handle_to_fd = vmw_prime_handle_to_fd, .fops = &vmwgfx_driver_fops, .name = VMWGFX_DRIVER_NAME, .desc = VMWGFX_DRIVER_DESC, .date = VMWGFX_DRIVER_DATE, .major = VMWGFX_DRIVER_MAJOR, .minor = VMWGFX_DRIVER_MINOR, .patchlevel = VMWGFX_DRIVER_PATCHLEVEL }; static struct pci_driver vmw_pci_driver = { .name = VMWGFX_DRIVER_NAME, .id_table = vmw_pci_id_list, .probe = vmw_probe, .remove = vmw_remove, .driver = { .pm = &vmw_pm_ops } }; static int vmw_probe(struct pci_dev *pdev, const struct pci_device_id *ent) { return drm_get_pci_dev(pdev, ent, &driver); } static int __init vmwgfx_init(void) { int ret; ret = drm_pci_init(&driver, &vmw_pci_driver); if (ret) DRM_ERROR("Failed initializing DRM.\n"); return ret; } static void __exit vmwgfx_exit(void) { drm_pci_exit(&driver, &vmw_pci_driver); } module_init(vmwgfx_init); module_exit(vmwgfx_exit); MODULE_AUTHOR("VMware Inc. and others"); MODULE_DESCRIPTION("Standalone drm driver for the VMware SVGA device"); MODULE_LICENSE("GPL and additional rights"); MODULE_VERSION(__stringify(VMWGFX_DRIVER_MAJOR) "." __stringify(VMWGFX_DRIVER_MINOR) "." __stringify(VMWGFX_DRIVER_PATCHLEVEL) "." "0");