diff options
| -rw-r--r-- | drivers/gpu/drm/vmwgfx/vmwgfx_cmdbuf.c | 242 | ||||
| -rw-r--r-- | drivers/gpu/drm/vmwgfx/vmwgfx_drv.c | 11 | ||||
| -rw-r--r-- | drivers/gpu/drm/vmwgfx/vmwgfx_drv.h | 39 | ||||
| -rw-r--r-- | drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c | 148 | ||||
| -rw-r--r-- | drivers/gpu/drm/vmwgfx/vmwgfx_fence.c | 104 | ||||
| -rw-r--r-- | drivers/gpu/drm/vmwgfx/vmwgfx_fence.h | 4 | ||||
| -rw-r--r-- | drivers/gpu/drm/vmwgfx/vmwgfx_irq.c | 111 | ||||
| -rw-r--r-- | drivers/gpu/drm/vmwgfx/vmwgfx_kms.c | 2 | ||||
| -rw-r--r-- | include/uapi/drm/vmwgfx_drm.h | 11 |
9 files changed, 511 insertions, 161 deletions
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_cmdbuf.c b/drivers/gpu/drm/vmwgfx/vmwgfx_cmdbuf.c index 86178796de6c..c706ad30411b 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_cmdbuf.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_cmdbuf.c @@ -51,6 +51,7 @@ struct vmw_cmdbuf_context { struct list_head hw_submitted; struct list_head preempted; unsigned num_hw_submitted; + bool block_submission; }; /** @@ -60,6 +61,9 @@ struct vmw_cmdbuf_context { * kernel command submissions, @cur. * @space_mutex: Mutex to protect against starvation when we allocate * main pool buffer space. + * @error_mutex: Mutex to serialize the work queue error handling. + * Note this is not needed if the same workqueue handler + * can't race with itself... * @work: A struct work_struct implementeing command buffer error handling. * Immutable. * @dev_priv: Pointer to the device private struct. Immutable. @@ -85,7 +89,6 @@ struct vmw_cmdbuf_context { * Internal protection. * @dheaders: Pool of DMA memory for device command buffer headers with trailing * space for inline data. Internal protection. - * @tasklet: Tasklet struct for irq processing. Immutable. * @alloc_queue: Wait queue for processes waiting to allocate command buffer * space. * @idle_queue: Wait queue for processes waiting for command buffer idle. @@ -102,6 +105,7 @@ struct vmw_cmdbuf_context { struct vmw_cmdbuf_man { struct mutex cur_mutex; struct mutex space_mutex; + struct mutex error_mutex; struct work_struct work; struct vmw_private *dev_priv; struct vmw_cmdbuf_context ctx[SVGA_CB_CONTEXT_MAX]; @@ -117,7 +121,6 @@ struct vmw_cmdbuf_man { spinlock_t lock; struct dma_pool *headers; struct dma_pool *dheaders; - struct tasklet_struct tasklet; wait_queue_head_t alloc_queue; wait_queue_head_t idle_queue; bool irq_on; @@ -181,12 +184,13 @@ struct vmw_cmdbuf_alloc_info { }; /* Loop over each context in the command buffer manager. */ -#define for_each_cmdbuf_ctx(_man, _i, _ctx) \ +#define for_each_cmdbuf_ctx(_man, _i, _ctx) \ for (_i = 0, _ctx = &(_man)->ctx[0]; (_i) < SVGA_CB_CONTEXT_MAX; \ ++(_i), ++(_ctx)) -static int vmw_cmdbuf_startstop(struct vmw_cmdbuf_man *man, bool enable); - +static int vmw_cmdbuf_startstop(struct vmw_cmdbuf_man *man, u32 context, + bool enable); +static int vmw_cmdbuf_preempt(struct vmw_cmdbuf_man *man, u32 context); /** * vmw_cmdbuf_cur_lock - Helper to lock the cur_mutex. @@ -278,9 +282,9 @@ void vmw_cmdbuf_header_free(struct vmw_cmdbuf_header *header) vmw_cmdbuf_header_inline_free(header); return; } - spin_lock_bh(&man->lock); + spin_lock(&man->lock); __vmw_cmdbuf_header_free(header); - spin_unlock_bh(&man->lock); + spin_unlock(&man->lock); } @@ -331,7 +335,8 @@ static void vmw_cmdbuf_ctx_submit(struct vmw_cmdbuf_man *man, struct vmw_cmdbuf_context *ctx) { while (ctx->num_hw_submitted < man->max_hw_submitted && - !list_empty(&ctx->submitted)) { + !list_empty(&ctx->submitted) && + !ctx->block_submission) { struct vmw_cmdbuf_header *entry; SVGACBStatus status; @@ -386,12 +391,17 @@ static void vmw_cmdbuf_ctx_process(struct vmw_cmdbuf_man *man, __vmw_cmdbuf_header_free(entry); break; case SVGA_CB_STATUS_COMMAND_ERROR: - case SVGA_CB_STATUS_CB_HEADER_ERROR: + entry->cb_header->status = SVGA_CB_STATUS_NONE; list_add_tail(&entry->list, &man->error); schedule_work(&man->work); break; case SVGA_CB_STATUS_PREEMPTED: - list_add(&entry->list, &ctx->preempted); + entry->cb_header->status = SVGA_CB_STATUS_NONE; + list_add_tail(&entry->list, &ctx->preempted); + break; + case SVGA_CB_STATUS_CB_HEADER_ERROR: + WARN_ONCE(true, "Command buffer header error.\n"); + __vmw_cmdbuf_header_free(entry); break; default: WARN_ONCE(true, "Undefined command buffer status.\n"); @@ -468,20 +478,17 @@ static void vmw_cmdbuf_ctx_add(struct vmw_cmdbuf_man *man, } /** - * vmw_cmdbuf_man_tasklet - The main part of the command buffer interrupt - * handler implemented as a tasklet. + * vmw_cmdbuf_irqthread - The main part of the command buffer interrupt + * handler implemented as a threaded irq task. * - * @data: Tasklet closure. A pointer to the command buffer manager cast to - * an unsigned long. + * @man: Pointer to the command buffer manager. * - * The bottom half (tasklet) of the interrupt handler simply calls into the + * The bottom half of the interrupt handler simply calls into the * command buffer processor to free finished buffers and submit any * queued buffers to hardware. */ -static void vmw_cmdbuf_man_tasklet(unsigned long data) +void vmw_cmdbuf_irqthread(struct vmw_cmdbuf_man *man) { - struct vmw_cmdbuf_man *man = (struct vmw_cmdbuf_man *) data; - spin_lock(&man->lock); vmw_cmdbuf_man_process(man); spin_unlock(&man->lock); @@ -502,24 +509,112 @@ static void vmw_cmdbuf_work_func(struct work_struct *work) container_of(work, struct vmw_cmdbuf_man, work); struct vmw_cmdbuf_header *entry, *next; uint32_t dummy; - bool restart = false; + bool restart[SVGA_CB_CONTEXT_MAX]; + bool send_fence = false; + struct list_head restart_head[SVGA_CB_CONTEXT_MAX]; + int i; + struct vmw_cmdbuf_context *ctx; - spin_lock_bh(&man->lock); + for_each_cmdbuf_ctx(man, i, ctx) { + INIT_LIST_HEAD(&restart_head[i]); + restart[i] = false; + } + + mutex_lock(&man->error_mutex); + spin_lock(&man->lock); list_for_each_entry_safe(entry, next, &man->error, list) { - restart = true; - DRM_ERROR("Command buffer error.\n"); + SVGACBHeader *cb_hdr = entry->cb_header; + SVGA3dCmdHeader *header = (SVGA3dCmdHeader *) + (entry->cmd + cb_hdr->errorOffset); + u32 error_cmd_size, new_start_offset; + const char *cmd_name; + + list_del_init(&entry->list); + restart[entry->cb_context] = true; + + if (!vmw_cmd_describe(header, &error_cmd_size, &cmd_name)) { + DRM_ERROR("Unknown command causing device error.\n"); + DRM_ERROR("Command buffer offset is %lu\n", + (unsigned long) cb_hdr->errorOffset); + __vmw_cmdbuf_header_free(entry); + send_fence = true; + continue; + } - list_del(&entry->list); - __vmw_cmdbuf_header_free(entry); - wake_up_all(&man->idle_queue); + DRM_ERROR("Command \"%s\" causing device error.\n", cmd_name); + DRM_ERROR("Command buffer offset is %lu\n", + (unsigned long) cb_hdr->errorOffset); + DRM_ERROR("Command size is %lu\n", + (unsigned long) error_cmd_size); + + new_start_offset = cb_hdr->errorOffset + error_cmd_size; + + if (new_start_offset >= cb_hdr->length) { + __vmw_cmdbuf_header_free(entry); + send_fence = true; + continue; + } + + if (man->using_mob) + cb_hdr->ptr.mob.mobOffset += new_start_offset; + else + cb_hdr->ptr.pa += (u64) new_start_offset; + + entry->cmd += new_start_offset; + cb_hdr->length -= new_start_offset; + cb_hdr->errorOffset = 0; + cb_hdr->offset = 0; + list_add_tail(&entry->list, &restart_head[entry->cb_context]); + man->ctx[entry->cb_context].block_submission = true; + } + spin_unlock(&man->lock); + + /* Preempt all contexts with errors */ + for_each_cmdbuf_ctx(man, i, ctx) { + if (ctx->block_submission && vmw_cmdbuf_preempt(man, i)) + DRM_ERROR("Failed preempting command buffer " + "context %u.\n", i); + } + + spin_lock(&man->lock); + for_each_cmdbuf_ctx(man, i, ctx) { + if (!ctx->block_submission) + continue; + + /* Move preempted command buffers to the preempted queue. */ + vmw_cmdbuf_ctx_process(man, ctx, &dummy); + + /* + * Add the preempted queue after the command buffer + * that caused an error. + */ + list_splice_init(&ctx->preempted, restart_head[i].prev); + + /* + * Finally add all command buffers first in the submitted + * queue, to rerun them. + */ + list_splice_init(&restart_head[i], &ctx->submitted); + + ctx->block_submission = false; } - spin_unlock_bh(&man->lock); - if (restart && vmw_cmdbuf_startstop(man, true)) - DRM_ERROR("Failed restarting command buffer context 0.\n"); + vmw_cmdbuf_man_process(man); + spin_unlock(&man->lock); + + for_each_cmdbuf_ctx(man, i, ctx) { + if (restart[i] && vmw_cmdbuf_startstop(man, i, true)) + DRM_ERROR("Failed restarting command buffer " + "context %u.\n", i); + } /* Send a new fence in case one was removed */ - vmw_fifo_send_fence(man->dev_priv, &dummy); + if (send_fence) { + vmw_fifo_send_fence(man->dev_priv, &dummy); + wake_up_all(&man->idle_queue); + } + + mutex_unlock(&man->error_mutex); } /** @@ -536,7 +631,7 @@ static bool vmw_cmdbuf_man_idle(struct vmw_cmdbuf_man *man, bool idle = false; int i; - spin_lock_bh(&man->lock); + spin_lock(&man->lock); vmw_cmdbuf_man_process(man); for_each_cmdbuf_ctx(man, i, ctx) { if (!list_empty(&ctx->submitted) || @@ -548,7 +643,7 @@ static bool vmw_cmdbuf_man_idle(struct vmw_cmdbuf_man *man, idle = list_empty(&man->error); out_unlock: - spin_unlock_bh(&man->lock); + spin_unlock(&man->lock); return idle; } @@ -571,7 +666,7 @@ static void __vmw_cmdbuf_cur_flush(struct vmw_cmdbuf_man *man) if (!cur) return; - spin_lock_bh(&man->lock); + spin_lock(&man->lock); if (man->cur_pos == 0) { __vmw_cmdbuf_header_free(cur); goto out_unlock; @@ -580,7 +675,7 @@ static void __vmw_cmdbuf_cur_flush(struct vmw_cmdbuf_man *man) man->cur->cb_header->length = man->cur_pos; vmw_cmdbuf_ctx_add(man, man->cur, SVGA_CB_CONTEXT_0); out_unlock: - spin_unlock_bh(&man->lock); + spin_unlock(&man->lock); man->cur = NULL; man->cur_pos = 0; } @@ -673,14 +768,14 @@ static bool vmw_cmdbuf_try_alloc(struct vmw_cmdbuf_man *man, return true; memset(info->node, 0, sizeof(*info->node)); - spin_lock_bh(&man->lock); + spin_lock(&man->lock); ret = drm_mm_insert_node(&man->mm, info->node, info->page_size); if (ret) { vmw_cmdbuf_man_process(man); ret = drm_mm_insert_node(&man->mm, info->node, info->page_size); } - spin_unlock_bh(&man->lock); + spin_unlock(&man->lock); info->done = !ret; return info->done; @@ -801,9 +896,9 @@ static int vmw_cmdbuf_space_pool(struct vmw_cmdbuf_man *man, return 0; out_no_cb_header: - spin_lock_bh(&man->lock); + spin_lock(&man->lock); drm_mm_remove_node(&header->node); - spin_unlock_bh(&man->lock); + spin_unlock(&man->lock); return ret; } @@ -1023,18 +1118,6 @@ void vmw_cmdbuf_commit(struct vmw_cmdbuf_man *man, size_t size, vmw_cmdbuf_cur_unlock(man); } -/** - * vmw_cmdbuf_tasklet_schedule - Schedule the interrupt handler bottom half. - * - * @man: The command buffer manager. - */ -void vmw_cmdbuf_tasklet_schedule(struct vmw_cmdbuf_man *man) -{ - if (!man) - return; - - tasklet_schedule(&man->tasklet); -} /** * vmw_cmdbuf_send_device_command - Send a command through the device context. @@ -1059,9 +1142,9 @@ static int vmw_cmdbuf_send_device_command(struct vmw_cmdbuf_man *man, memcpy(cmd, command, size); header->cb_header->length = size; header->cb_context = SVGA_CB_CONTEXT_DEVICE; - spin_lock_bh(&man->lock); + spin_lock(&man->lock); status = vmw_cmdbuf_header_submit(header); - spin_unlock_bh(&man->lock); + spin_unlock(&man->lock); vmw_cmdbuf_header_free(header); if (status != SVGA_CB_STATUS_COMPLETED) { @@ -1074,6 +1157,29 @@ static int vmw_cmdbuf_send_device_command(struct vmw_cmdbuf_man *man, } /** + * vmw_cmdbuf_preempt - Send a preempt command through the device + * context. + * + * @man: The command buffer manager. + * + * Synchronously sends a preempt command. + */ +static int vmw_cmdbuf_preempt(struct vmw_cmdbuf_man *man, u32 context) +{ + struct { + uint32 id; + SVGADCCmdPreempt body; + } __packed cmd; + + cmd.id = SVGA_DC_CMD_PREEMPT; + cmd.body.context = SVGA_CB_CONTEXT_0 + context; + cmd.body.ignoreIDZero = 0; + + return vmw_cmdbuf_send_device_command(man, &cmd, sizeof(cmd)); +} + + +/** * vmw_cmdbuf_startstop - Send a start / stop command through the device * context. * @@ -1082,7 +1188,7 @@ static int vmw_cmdbuf_send_device_command(struct vmw_cmdbuf_man *man, * * Synchronously sends a device start / stop context command. */ -static int vmw_cmdbuf_startstop(struct vmw_cmdbuf_man *man, +static int vmw_cmdbuf_startstop(struct vmw_cmdbuf_man *man, u32 context, bool enable) { struct { @@ -1092,7 +1198,7 @@ static int vmw_cmdbuf_startstop(struct vmw_cmdbuf_man *man, cmd.id = SVGA_DC_CMD_START_STOP_CONTEXT; cmd.body.enable = (enable) ? 1 : 0; - cmd.body.context = SVGA_CB_CONTEXT_0; + cmd.body.context = SVGA_CB_CONTEXT_0 + context; return vmw_cmdbuf_send_device_command(man, &cmd, sizeof(cmd)); } @@ -1191,7 +1297,7 @@ struct vmw_cmdbuf_man *vmw_cmdbuf_man_create(struct vmw_private *dev_priv) { struct vmw_cmdbuf_man *man; struct vmw_cmdbuf_context *ctx; - int i; + unsigned int i; int ret; if (!(dev_priv->capabilities & SVGA_CAP_COMMAND_BUFFERS)) @@ -1226,8 +1332,7 @@ struct vmw_cmdbuf_man *vmw_cmdbuf_man_create(struct vmw_private *dev_priv) spin_lock_init(&man->lock); mutex_init(&man->cur_mutex); mutex_init(&man->space_mutex); - tasklet_init(&man->tasklet, vmw_cmdbuf_man_tasklet, - (unsigned long) man); + mutex_init(&man->error_mutex); man->default_size = VMW_CMDBUF_INLINE_SIZE; init_waitqueue_head(&man->alloc_queue); init_waitqueue_head(&man->idle_queue); @@ -1236,11 +1341,14 @@ struct vmw_cmdbuf_man *vmw_cmdbuf_man_create(struct vmw_private *dev_priv) INIT_WORK(&man->work, &vmw_cmdbuf_work_func); vmw_generic_waiter_add(dev_priv, SVGA_IRQFLAG_ERROR, &dev_priv->error_waiters); - ret = vmw_cmdbuf_startstop(man, true); - if (ret) { - DRM_ERROR("Failed starting command buffer context 0.\n"); - vmw_cmdbuf_man_destroy(man); - return ERR_PTR(ret); + for_each_cmdbuf_ctx(man, i, ctx) { + ret = vmw_cmdbuf_startstop(man, i, true); + if (ret) { + DRM_ERROR("Failed starting command buffer " + "context %u.\n", i); + vmw_cmdbuf_man_destroy(man); + return ERR_PTR(ret); + } } return man; @@ -1290,18 +1398,24 @@ void vmw_cmdbuf_remove_pool(struct vmw_cmdbuf_man *man) */ void vmw_cmdbuf_man_destroy(struct vmw_cmdbuf_man *man) { + struct vmw_cmdbuf_context *ctx; + unsigned int i; + WARN_ON_ONCE(man->has_pool); (void) vmw_cmdbuf_idle(man, false, 10*HZ); - if (vmw_cmdbuf_startstop(man, false)) - DRM_ERROR("Failed stopping command buffer context 0.\n"); + + for_each_cmdbuf_ctx(man, i, ctx) + if (vmw_cmdbuf_startstop(man, i, false)) + DRM_ERROR("Failed stopping command buffer " + "context %u.\n", i); vmw_generic_waiter_remove(man->dev_priv, SVGA_IRQFLAG_ERROR, &man->dev_priv->error_waiters); - tasklet_kill(&man->tasklet); (void) cancel_work_sync(&man->work); dma_pool_destroy(man->dheaders); dma_pool_destroy(man->headers); mutex_destroy(&man->cur_mutex); mutex_destroy(&man->space_mutex); + mutex_destroy(&man->error_mutex); kfree(man); } diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c index 8be26509a9aa..e84fee3ec4f3 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c @@ -36,7 +36,6 @@ #include <drm/ttm/ttm_module.h> #include <linux/dma_remapping.h> -#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 @@ -825,7 +824,7 @@ static int vmw_driver_load(struct drm_device *dev, unsigned long chipset) } if (dev_priv->capabilities & SVGA_CAP_IRQMASK) { - ret = drm_irq_install(dev, dev->pdev->irq); + ret = vmw_irq_install(dev, dev->pdev->irq); if (ret != 0) { DRM_ERROR("Failed installing irq: %d\n", ret); goto out_no_irq; @@ -937,7 +936,7 @@ out_no_bdev: vmw_fence_manager_takedown(dev_priv->fman); out_no_fman: if (dev_priv->capabilities & SVGA_CAP_IRQMASK) - drm_irq_uninstall(dev_priv->dev); + vmw_irq_uninstall(dev_priv->dev); out_no_irq: if (dev_priv->stealth) pci_release_region(dev->pdev, 2); @@ -990,7 +989,7 @@ static void vmw_driver_unload(struct drm_device *dev) vmw_release_device_late(dev_priv); vmw_fence_manager_takedown(dev_priv->fman); if (dev_priv->capabilities & SVGA_CAP_IRQMASK) - drm_irq_uninstall(dev_priv->dev); + vmw_irq_uninstall(dev_priv->dev); if (dev_priv->stealth) pci_release_region(dev->pdev, 2); else @@ -1516,10 +1515,6 @@ static struct drm_driver driver = { .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, diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h index 4b948fba9eec..7e5f30e234b1 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h @@ -40,10 +40,12 @@ #include <drm/ttm/ttm_execbuf_util.h> #include <drm/ttm/ttm_module.h> #include "vmwgfx_fence.h" +#include <linux/sync_file.h> -#define VMWGFX_DRIVER_DATE "20170607" +#define VMWGFX_DRIVER_NAME "vmwgfx" +#define VMWGFX_DRIVER_DATE "20170612" #define VMWGFX_DRIVER_MAJOR 2 -#define VMWGFX_DRIVER_MINOR 13 +#define VMWGFX_DRIVER_MINOR 14 #define VMWGFX_DRIVER_PATCHLEVEL 0 #define VMWGFX_FILE_PAGE_OFFSET 0x00100000 #define VMWGFX_FIFO_STATIC_SIZE (1024*1024) @@ -351,6 +353,12 @@ struct vmw_otable_batch { struct ttm_buffer_object *otable_bo; }; +enum { + VMW_IRQTHREAD_FENCE, + VMW_IRQTHREAD_CMDBUF, + VMW_IRQTHREAD_MAX +}; + struct vmw_private { struct ttm_bo_device bdev; struct ttm_bo_global_ref bo_global_ref; @@ -529,6 +537,7 @@ struct vmw_private { struct vmw_otable_batch otable_batch; struct vmw_cmdbuf_man *cman; + DECLARE_BITMAP(irqthread_pending, VMW_IRQTHREAD_MAX); }; static inline struct vmw_surface *vmw_res_to_srf(struct vmw_resource *res) @@ -561,24 +570,21 @@ static inline struct vmw_master *vmw_master(struct drm_master *master) static inline void vmw_write(struct vmw_private *dev_priv, unsigned int offset, uint32_t value) { - unsigned long irq_flags; - - spin_lock_irqsave(&dev_priv->hw_lock, irq_flags); + spin_lock(&dev_priv->hw_lock); outl(offset, dev_priv->io_start + VMWGFX_INDEX_PORT); outl(value, dev_priv->io_start + VMWGFX_VALUE_PORT); - spin_unlock_irqrestore(&dev_priv->hw_lock, irq_flags); + spin_unlock(&dev_priv->hw_lock); } static inline uint32_t vmw_read(struct vmw_private *dev_priv, unsigned int offset) { - unsigned long irq_flags; u32 val; - spin_lock_irqsave(&dev_priv->hw_lock, irq_flags); + spin_lock(&dev_priv->hw_lock); outl(offset, dev_priv->io_start + VMWGFX_INDEX_PORT); val = inl(dev_priv->io_start + VMWGFX_VALUE_PORT); - spin_unlock_irqrestore(&dev_priv->hw_lock, irq_flags); + spin_unlock(&dev_priv->hw_lock); return val; } @@ -821,7 +827,8 @@ extern int vmw_execbuf_process(struct drm_file *file_priv, uint32_t dx_context_handle, struct drm_vmw_fence_rep __user *user_fence_rep, - struct vmw_fence_obj **out_fence); + struct vmw_fence_obj **out_fence, + uint32_t flags); extern void __vmw_execbuf_release_pinned_bo(struct vmw_private *dev_priv, struct vmw_fence_obj *fence); extern void vmw_execbuf_release_pinned_bo(struct vmw_private *dev_priv); @@ -836,23 +843,23 @@ extern void vmw_execbuf_copy_fence_user(struct vmw_private *dev_priv, struct drm_vmw_fence_rep __user *user_fence_rep, struct vmw_fence_obj *fence, - uint32_t fence_handle); + uint32_t fence_handle, + int32_t out_fence_fd, + struct sync_file *sync_file); extern int vmw_validate_single_buffer(struct vmw_private *dev_priv, struct ttm_buffer_object *bo, bool interruptible, bool validate_as_mob); - +bool vmw_cmd_describe(const void *buf, u32 *size, char const **cmd); /** * IRQs and wating - vmwgfx_irq.c */ -extern irqreturn_t vmw_irq_handler(int irq, void *arg); extern int vmw_wait_seqno(struct vmw_private *dev_priv, bool lazy, uint32_t seqno, bool interruptible, unsigned long timeout); -extern void vmw_irq_preinstall(struct drm_device *dev); -extern int vmw_irq_postinstall(struct drm_device *dev); +extern int vmw_irq_install(struct drm_device *dev, int irq); extern void vmw_irq_uninstall(struct drm_device *dev); extern bool vmw_seqno_passed(struct vmw_private *dev_priv, uint32_t seqno); @@ -1150,13 +1157,13 @@ extern void *vmw_cmdbuf_reserve(struct vmw_cmdbuf_man *man, size_t size, extern void vmw_cmdbuf_commit(struct vmw_cmdbuf_man *man, size_t size, struct vmw_cmdbuf_header *header, bool flush); -extern void vmw_cmdbuf_tasklet_schedule(struct vmw_cmdbuf_man *man); extern void *vmw_cmdbuf_alloc(struct vmw_cmdbuf_man *man, size_t size, bool interruptible, struct vmw_cmdbuf_header **p_header); extern void vmw_cmdbuf_header_free(struct vmw_cmdbuf_header *header); extern int vmw_cmdbuf_cur_flush(struct vmw_cmdbuf_man *man, bool interruptible); +extern void vmw_cmdbuf_irqthread(struct vmw_cmdbuf_man *man); /** diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c b/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c index 2cfb3c93f42a..21c62a34e558 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c @@ -24,6 +24,7 @@ * USE OR OTHER DEALINGS IN THE SOFTWARE. * **************************************************************************/ +#include <linux/sync_file.h> #include "vmwgfx_drv.h" #include "vmwgfx_reg.h" @@ -112,11 +113,12 @@ struct vmw_cmd_entry { bool user_allow; bool gb_disable; bool gb_enable; + const char *cmd_name; }; #define VMW_CMD_DEF(_cmd, _func, _user_allow, _gb_disable, _gb_enable) \ [(_cmd) - SVGA_3D_CMD_BASE] = {(_func), (_user_allow),\ - (_gb_disable), (_gb_enable)} + (_gb_disable), (_gb_enable), #_cmd} static int vmw_resource_context_res_add(struct vmw_private *dev_priv, struct vmw_sw_context *sw_context, @@ -3302,6 +3304,8 @@ static const struct vmw_cmd_entry vmw_cmd_entries[SVGA_3D_CMD_MAX] = { true, false, true), VMW_CMD_DEF(SVGA_3D_CMD_NOP, &vmw_cmd_ok, true, false, true), + VMW_CMD_DEF(SVGA_3D_CMD_NOP_ERROR, &vmw_cmd_ok, + true, false, true), VMW_CMD_DEF(SVGA_3D_CMD_ENABLE_GART, &vmw_cmd_invalid, false, false, true), VMW_CMD_DEF(SVGA_3D_CMD_DISABLE_GART, &vmw_cmd_invalid, @@ -3469,6 +3473,51 @@ static const struct vmw_cmd_entry vmw_cmd_entries[SVGA_3D_CMD_MAX] = { true, false, true), }; +bool vmw_cmd_describe(const void *buf, u32 *size, char const **cmd) +{ + u32 cmd_id = ((u32 *) buf)[0]; + + if (cmd_id >= SVGA_CMD_MAX) { + SVGA3dCmdHeader *header = (SVGA3dCmdHeader *) buf; + const struct vmw_cmd_entry *entry; + + *size = header->size + sizeof(SVGA3dCmdHeader); + cmd_id = header->id; + if (cmd_id >= SVGA_3D_CMD_MAX) + return false; + + cmd_id -= SVGA_3D_CMD_BASE; + entry = &vmw_cmd_entries[cmd_id]; + *cmd = entry->cmd_name; + return true; + } + + switch (cmd_id) { + case SVGA_CMD_UPDATE: + *cmd = "SVGA_CMD_UPDATE"; + *size = sizeof(u32) + sizeof(SVGAFifoCmdUpdate); + break; + case SVGA_CMD_DEFINE_GMRFB: + *cmd = "SVGA_CMD_DEFINE_GMRFB"; + *size = sizeof(u32) + sizeof(SVGAFifoCmdDefineGMRFB); + break; + case SVGA_CMD_BLIT_GMRFB_TO_SCREEN: + *cmd = "SVGA_CMD_BLIT_GMRFB_TO_SCREEN"; + *size = sizeof(u32) + sizeof(SVGAFifoCmdBlitGMRFBToScreen); + break; + case SVGA_CMD_BLIT_SCREEN_TO_GMRFB: + *cmd = "SVGA_CMD_BLIT_SCREEN_TO_GMRFB"; + *size = sizeof(u32) + sizeof(SVGAFifoCmdBlitGMRFBToScreen); + break; + default: + *cmd = "UNKNOWN"; + *size = 0; + return false; + } + + return true; +} + static int vmw_cmd_check(struct vmw_private *dev_priv, struct vmw_sw_context *sw_context, void *buf, uint32_t *size) @@ -3781,6 +3830,8 @@ int vmw_execbuf_fence_commands(struct drm_file *file_priv, * which the information should be copied. * @fence: Pointer to the fenc object. * @fence_handle: User-space fence handle. + * @out_fence_fd: exported file descriptor for the fence. -1 if not used + * @sync_file: Only used to clean up in case of an error in this function. * * This function copies fence information to user-space. If copying fails, * The user-space struct drm_vmw_fence_rep::error member is hopefully @@ -3796,7 +3847,9 @@ vmw_execbuf_copy_fence_user(struct vmw_private *dev_priv, int ret, struct drm_vmw_fence_rep __user *user_fence_rep, struct vmw_fence_obj *fence, - uint32_t fence_handle) + uint32_t fence_handle, + int32_t out_fence_fd, + struct sync_file *sync_file) { struct drm_vmw_fence_rep fence_rep; @@ -3806,6 +3859,7 @@ vmw_execbuf_copy_fence_user(struct vmw_private *dev_priv, memset(&fence_rep, 0, sizeof(fence_rep)); fence_rep.error = ret; + fence_rep.fd = out_fence_fd; if (ret == 0) { BUG_ON(fence == NULL); @@ -3828,6 +3882,14 @@ vmw_execbuf_copy_fence_user(struct vmw_private *dev_priv, * and unreference the handle. */ if (unlikely(ret != 0) && (fence_rep.error == 0)) { + if (sync_file) + fput(sync_file->file); + + if (fence_rep.fd != -1) { + put_unused_fd(fence_rep.fd); + fence_rep.fd = -1; + } + ttm_ref_object_base_unref(vmw_fp->tfile, fence_handle, TTM_REF_USAGE); DRM_ERROR("Fence copy error. Syncing.\n"); @@ -4003,7 +4065,8 @@ int vmw_execbuf_process(struct drm_file *file_priv, uint64_t throttle_us, uint32_t dx_context_handle, struct drm_vmw_fence_rep __user *user_fence_rep, - struct vmw_fence_obj **out_fence) + struct vmw_fence_obj **out_fence, + uint32_t flags) { struct vmw_sw_context *sw_context = &dev_priv->ctx; struct vmw_fence_obj *fence = NULL; @@ -4013,20 +4076,33 @@ int vmw_execbuf_process(struct drm_file *file_priv, struct ww_acquire_ctx ticket; uint32_t handle; int ret; + int32_t out_fence_fd = -1; + struct sync_file *sync_file = NULL; + + + if (flags & DRM_VMW_EXECBUF_FLAG_EXPORT_FENCE_FD) { + out_fence_fd = get_unused_fd_flags(O_CLOEXEC); + if (out_fence_fd < 0) { + DRM_ERROR("Failed to get a fence file descriptor.\n"); + return out_fence_fd; + } + } if (throttle_us) { ret = vmw_wait_lag(dev_priv, &dev_priv->fifo.marker_queue, throttle_us); if (ret) - return ret; + goto out_free_fence_fd; } kernel_commands = vmw_execbuf_cmdbuf(dev_priv, user_commands, kernel_commands, command_size, &header); - if (IS_ERR(kernel_commands)) - return PTR_ERR(kernel_commands); + if (IS_ERR(kernel_commands)) { + ret = PTR_ERR(kernel_commands); + goto out_free_fence_fd; + } ret = mutex_lock_interruptible(&dev_priv->cmdbuf_mutex); if (ret) { @@ -4162,8 +4238,32 @@ int vmw_execbuf_process(struct drm_file *file_priv, __vmw_execbuf_release_pinned_bo(dev_priv, fence); vmw_clear_validations(sw_context); + + /* + * If anything fails here, give up trying to export the fence + * and do a sync since the user mode will not be able to sync + * the fence itself. This ensures we are still functionally + * correct. + */ + if (flags & DRM_VMW_EXECBUF_FLAG_EXPORT_FENCE_FD) { + + sync_file = sync_file_create(&fence->base); + if (!sync_file) { + DRM_ERROR("Unable to create sync file for fence\n"); + put_unused_fd(out_fence_fd); + out_fence_fd = -1; + + (void) vmw_fence_obj_wait(fence, false, false, + VMW_FENCE_WAIT_TIMEOUT); + } else { + /* Link the fence with the FD created earlier */ + fd_install(out_fence_fd, sync_file->file); + } + } + vmw_execbuf_copy_fence_user(dev_priv, vmw_fpriv(file_priv), ret, - user_fence_rep, fence, handle); + user_fence_rep, fence, handle, + out_fence_fd, sync_file); /* Don't unreference when handing fence out */ if (unlikely(out_fence != NULL)) { @@ -4214,6 +4314,9 @@ out_unlock: out_free_header: if (header) vmw_cmdbuf_header_free(header); +out_free_fence_fd: + if (out_fence_fd >= 0) + put_unused_fd(out_fence_fd); return ret; } @@ -4366,6 +4469,7 @@ int vmw_execbuf_ioctl(struct drm_device *dev, unsigned long data, static const size_t copy_offset[] = { offsetof(struct drm_vmw_execbuf_arg, context_handle), sizeof(struct drm_vmw_execbuf_arg)}; + struct dma_fence *in_fence = NULL; if (unlikely(size < copy_offset[0])) { DRM_ERROR("Invalid command size, ioctl %d\n", @@ -4401,15 +4505,25 @@ int vmw_execbuf_ioctl(struct drm_device *dev, unsigned long data, arg.context_handle = (uint32_t) -1; break; case 2: - if (arg.pad64 != 0) { - DRM_ERROR("Unused IOCTL data not set to zero.\n"); - return -EINVAL; - } - break; default: break; } + + /* If imported a fence FD from elsewhere, then wait on it */ + if (arg.flags & DRM_VMW_EXECBUF_FLAG_IMPORT_FENCE_FD) { + in_fence = sync_file_get_fence(arg.imported_fence_fd); + + if (!in_fence) { + DRM_ERROR("Cannot get imported fence\n"); + return -EINVAL; + } + + ret = vmw_wait_dma_fence(dev_priv->fman, in_fence); + if (ret) + goto out; + } + ret = ttm_read_lock(&dev_priv->reservation_sem, true); if (unlikely(ret != 0)) return ret; @@ -4419,12 +4533,16 @@ int vmw_execbuf_ioctl(struct drm_device *dev, unsigned long data, NULL, arg.command_size, arg.throttle_us, arg.context_handle, (void __user *)(unsigned long)arg.fence_rep, - NULL); + NULL, + arg.flags); ttm_read_unlock(&dev_priv->reservation_sem); if (unlikely(ret != 0)) - return ret; + goto out; vmw_kms_cursor_post_execbuf(dev_priv); - return 0; +out: + if (in_fence) + dma_fence_put(in_fence); + return ret; } diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_fence.c b/drivers/gpu/drm/vmwgfx/vmwgfx_fence.c index b8bc5bc7de7e..3bbad22b3748 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_fence.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_fence.c @@ -114,12 +114,11 @@ static void vmw_fence_obj_destroy(struct dma_fence *f) container_of(f, struct vmw_fence_obj, base); struct vmw_fence_manager *fman = fman_from_fence(fence); - unsigned long irq_flags; - spin_lock_irqsave(&fman->lock, irq_flags); + spin_lock(&fman->lock); list_del_init(&fence->head); --fman->num_fence_objects; - spin_unlock_irqrestore(&fman->lock, irq_flags); + spin_unlock(&fman->lock); fence->destroy(fence); } @@ -252,10 +251,10 @@ static void vmw_fence_work_func(struct work_struct *work) INIT_LIST_HEAD(&list); mutex_lock(&fman->goal_irq_mutex); - spin_lock_irq(&fman->lock); + spin_lock(&fman->lock); list_splice_init(&fman->cleanup_list, &list); seqno_valid = fman->seqno_valid; - spin_unlock_irq(&fman->lock); + spin_unlock(&fman->lock); if (!seqno_valid && fman->goal_irq_on) { fman->goal_irq_on = false; @@ -305,15 +304,14 @@ struct vmw_fence_manager *vmw_fence_manager_init(struct vmw_private *dev_priv) void vmw_fence_manager_takedown(struct vmw_fence_manager *fman) { - unsigned long irq_flags; bool lists_empty; (void) cancel_work_sync(&fman->work); - spin_lock_irqsave(&fman->lock, irq_flags); + spin_lock(&fman->lock); lists_empty = list_empty(&fman->fence_list) && list_empty(&fman->cleanup_list); - spin_unlock_irqrestore(&fman->lock, irq_flags); + spin_unlock(&fman->lock); BUG_ON(!lists_empty); kfree(fman); @@ -323,7 +321,6 @@ static int vmw_fence_obj_init(struct vmw_fence_manager *fman, struct vmw_fence_obj *fence, u32 seqno, void (*destroy) (struct vmw_fence_obj *fence)) { - unsigned long irq_flags; int ret = 0; dma_fence_init(&fence->base, &vmw_fence_ops, &fman->lock, @@ -331,7 +328,7 @@ static int vmw_fence_obj_init(struct vmw_fence_manager *fman, INIT_LIST_HEAD(&fence->seq_passed_actions); fence->destroy = destroy; - spin_lock_irqsave(&fman->lock, irq_flags); + spin_lock(&fman->lock); if (unlikely(fman->fifo_down)) { ret = -EBUSY; goto out_unlock; @@ -340,7 +337,7 @@ static int vmw_fence_obj_init(struct vmw_fence_manager *fman, ++fman->num_fence_objects; out_unlock: - spin_unlock_irqrestore(&fman->lock, irq_flags); + spin_unlock(&fman->lock); return ret; } @@ -489,11 +486,9 @@ rerun: void vmw_fences_update(struct vmw_fence_manager *fman) { - unsigned long irq_flags; - - spin_lock_irqsave(&fman->lock, irq_flags); + spin_lock(&fman->lock); __vmw_fences_update(fman); - spin_unlock_irqrestore(&fman->lock, irq_flags); + spin_unlock(&fman->lock); } bool vmw_fence_obj_signaled(struct vmw_fence_obj *fence) @@ -650,6 +645,51 @@ out_no_object: /** + * vmw_wait_dma_fence - Wait for a dma fence + * + * @fman: pointer to a fence manager + * @fence: DMA fence to wait on + * + * This function handles the case when the fence is actually a fence + * array. If that's the case, it'll wait on each of the child fence + */ +int vmw_wait_dma_fence(struct vmw_fence_manager *fman, + struct dma_fence *fence) +{ + struct dma_fence_array *fence_array; + int ret = 0; + int i; + + + if (dma_fence_is_signaled(fence)) + return 0; + + if (!dma_fence_is_array(fence)) + return dma_fence_wait(fence, true); + + /* From i915: Note that if the fence-array was created in + * signal-on-any mode, we should *not* decompose it into its individual + * fences. However, we don't currently store which mode the fence-array + * is operating in. Fortunately, the only user of signal-on-any is + * private to amdgpu and we should not see any incoming fence-array + * from sync-file being in signal-on-any mode. + */ + + fence_array = to_dma_fence_array(fence); + for (i = 0; i < fence_array->num_fences; i++) { + struct dma_fence *child = fence_array->fences[i]; + + ret = dma_fence_wait(child, true); + + if (ret < 0) + return ret; + } + + return 0; +} + + +/** * vmw_fence_fifo_down - signal all unsignaled fence objects. */ @@ -663,14 +703,14 @@ void vmw_fence_fifo_down(struct vmw_fence_manager *fman) * restart when we've released the fman->lock. */ - spin_lock_irq(&fman->lock); + spin_lock(&fman->lock); fman->fifo_down = true; while (!list_empty(&fman->fence_list)) { struct vmw_fence_obj *fence = list_entry(fman->fence_list.prev, struct vmw_fence_obj, head); dma_fence_get(&fence->base); - spin_unlock_irq(&fman->lock); + spin_unlock(&fman->lock); ret = vmw_fence_obj_wait(fence, false, false, VMW_FENCE_WAIT_TIMEOUT); @@ -686,18 +726,16 @@ void vmw_fence_fifo_down(struct vmw_fence_manager *fman) BUG_ON(!list_empty(&fence->head)); dma_fence_put(&fence->base); - spin_lock_irq(&fman->lock); + spin_lock(&fman->lock); } - spin_unlock_irq(&fman->lock); + spin_unlock(&fman->lock); } void vmw_fence_fifo_up(struct vmw_fence_manager *fman) { - unsigned long irq_flags; - - spin_lock_irqsave(&fman->lock, irq_flags); + spin_lock(&fman->lock); fman->fifo_down = false; - spin_unlock_irqrestore(&fman->lock, irq_flags); + spin_unlock(&fman->lock); } @@ -812,9 +850,9 @@ int vmw_fence_obj_signaled_ioctl(struct drm_device *dev, void *data, arg->signaled = vmw_fence_obj_signaled(fence); arg->signaled_flags = arg->flags; - spin_lock_irq(&fman->lock); + spin_lock(&fman->lock); arg->passed_seqno = dev_priv->last_read_seqno; - spin_unlock_irq(&fman->lock); + spin_unlock(&fman->lock); ttm_base_object_unref(&base); @@ -841,8 +879,7 @@ int vmw_fence_obj_unref_ioctl(struct drm_device *dev, void *data, * * This function is called when the seqno of the fence where @action is * attached has passed. It queues the event on the submitter's event list. - * This function is always called from atomic context, and may be called - * from irq context. + * This function is always called from atomic context. */ static void vmw_event_fence_action_seq_passed(struct vmw_fence_action *action) { @@ -851,13 +888,13 @@ static void vmw_event_fence_action_seq_passed(struct vmw_fence_action *action) struct drm_device *dev = eaction->dev; struct drm_pending_event *event = eaction->event; struct drm_file *file_priv; - unsigned long irq_flags; + if (unlikely(event == NULL)) return; file_priv = event->file_priv; - spin_lock_irqsave(&dev->event_lock, irq_flags); + spin_lock_irq(&dev->event_lock); if (likely(eaction->tv_sec != NULL)) { struct timeval tv; @@ -869,7 +906,7 @@ static void vmw_event_fence_action_seq_passed(struct vmw_fence_action *action) drm_send_event_locked(dev, eaction->event); eaction->event = NULL; - spin_unlock_irqrestore(&dev->event_lock, irq_flags); + spin_unlock_irq(&dev->event_lock); } /** @@ -904,11 +941,10 @@ static void vmw_fence_obj_add_action(struct vmw_fence_obj *fence, struct vmw_fence_action *action) { struct vmw_fence_manager *fman = fman_from_fence(fence); - unsigned long irq_flags; bool run_update = false; mutex_lock(&fman->goal_irq_mutex); - spin_lock_irqsave(&fman->lock, irq_flags); + spin_lock(&fman->lock); fman->pending_actions[action->type]++; if (dma_fence_is_signaled_locked(&fence->base)) { @@ -927,7 +963,7 @@ static void vmw_fence_obj_add_action(struct vmw_fence_obj *fence, run_update = vmw_fence_goal_check_locked(fence); } - spin_unlock_irqrestore(&fman->lock, irq_flags); + spin_unlock(&fman->lock); if (run_update) { if (!fman->goal_irq_on) { @@ -1114,7 +1150,7 @@ int vmw_fence_event_ioctl(struct drm_device *dev, void *data, } vmw_execbuf_copy_fence_user(dev_priv, vmw_fp, 0, user_fence_rep, fence, - handle); + handle, -1, NULL); vmw_fence_obj_unreference(&fence); return 0; out_no_create: diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_fence.h b/drivers/gpu/drm/vmwgfx/vmwgfx_fence.h index d9d85aa6ed20..20224dba9d8e 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_fence.h +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_fence.h @@ -28,6 +28,7 @@ #ifndef _VMWGFX_FENCE_H_ #include <linux/dma-fence.h> +#include <linux/dma-fence-array.h> #define VMW_FENCE_WAIT_TIMEOUT (5*HZ) @@ -102,6 +103,9 @@ extern int vmw_user_fence_create(struct drm_file *file_priv, struct vmw_fence_obj **p_fence, uint32_t *p_handle); +extern int vmw_wait_dma_fence(struct vmw_fence_manager *fman, + struct dma_fence *fence); + extern void vmw_fence_fifo_up(struct vmw_fence_manager *fman); extern void vmw_fence_fifo_down(struct vmw_fence_manager *fman); diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_irq.c b/drivers/gpu/drm/vmwgfx/vmwgfx_irq.c index 0c7e1723292c..b9239ba067c4 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_irq.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_irq.c @@ -30,11 +30,56 @@ #define VMW_FENCE_WRAP (1 << 24) -irqreturn_t vmw_irq_handler(int irq, void *arg) +/** + * vmw_thread_fn - Deferred (process context) irq handler + * + * @irq: irq number + * @arg: Closure argument. Pointer to a struct drm_device cast to void * + * + * This function implements the deferred part of irq processing. + * The function is guaranteed to run at least once after the + * vmw_irq_handler has returned with IRQ_WAKE_THREAD. + * + */ +static irqreturn_t vmw_thread_fn(int irq, void *arg) +{ + struct drm_device *dev = (struct drm_device *)arg; + struct vmw_private *dev_priv = vmw_priv(dev); + irqreturn_t ret = IRQ_NONE; + + if (test_and_clear_bit(VMW_IRQTHREAD_FENCE, + dev_priv->irqthread_pending)) { + vmw_fences_update(dev_priv->fman); + wake_up_all(&dev_priv->fence_queue); + ret = IRQ_HANDLED; + } + + if (test_and_clear_bit(VMW_IRQTHREAD_CMDBUF, + dev_priv->irqthread_pending)) { + vmw_cmdbuf_irqthread(dev_priv->cman); + ret = IRQ_HANDLED; + } + + return ret; +} + +/** + * vmw_irq_handler irq handler + * + * @irq: irq number + * @arg: Closure argument. Pointer to a struct drm_device cast to void * + * + * This function implements the quick part of irq processing. + * The function performs fast actions like clearing the device interrupt + * flags and also reasonably quick actions like waking processes waiting for + * FIFO space. Other IRQ actions are deferred to the IRQ thread. + */ +static irqreturn_t vmw_irq_handler(int irq, void *arg) { struct drm_device *dev = (struct drm_device *)arg; struct vmw_private *dev_priv = vmw_priv(dev); uint32_t status, masked_status; + irqreturn_t ret = IRQ_HANDLED; status = inl(dev_priv->io_start + VMWGFX_IRQSTATUS_PORT); masked_status = status & READ_ONCE(dev_priv->irq_mask); @@ -45,20 +90,21 @@ irqreturn_t vmw_irq_handler(int irq, void *arg) if (!status) return IRQ_NONE; - if (masked_status & (SVGA_IRQFLAG_ANY_FENCE | - SVGA_IRQFLAG_FENCE_GOAL)) { - vmw_fences_update(dev_priv->fman); - wake_up_all(&dev_priv->fence_queue); - } - if (masked_status & SVGA_IRQFLAG_FIFO_PROGRESS) wake_up_all(&dev_priv->fifo_queue); - if (masked_status & (SVGA_IRQFLAG_COMMAND_BUFFER | - SVGA_IRQFLAG_ERROR)) - vmw_cmdbuf_tasklet_schedule(dev_priv->cman); + if ((masked_status & (SVGA_IRQFLAG_ANY_FENCE | + SVGA_IRQFLAG_FENCE_GOAL)) && + !test_and_set_bit(VMW_IRQTHREAD_FENCE, dev_priv->irqthread_pending)) + ret = IRQ_WAKE_THREAD; - return IRQ_HANDLED; + if ((masked_status & (SVGA_IRQFLAG_COMMAND_BUFFER | + SVGA_IRQFLAG_ERROR)) && + !test_and_set_bit(VMW_IRQTHREAD_CMDBUF, + dev_priv->irqthread_pending)) + ret = IRQ_WAKE_THREAD; + + return ret; } static bool vmw_fifo_idle(struct vmw_private *dev_priv, uint32_t seqno) @@ -281,23 +327,15 @@ int vmw_wait_seqno(struct vmw_private *dev_priv, return ret; } -void vmw_irq_preinstall(struct drm_device *dev) +static void vmw_irq_preinstall(struct drm_device *dev) { struct vmw_private *dev_priv = vmw_priv(dev); uint32_t status; - if (!(dev_priv->capabilities & SVGA_CAP_IRQMASK)) - return; - status = inl(dev_priv->io_start + VMWGFX_IRQSTATUS_PORT); outl(status, dev_priv->io_start + VMWGFX_IRQSTATUS_PORT); } -int vmw_irq_postinstall(struct drm_device *dev) -{ - return 0; -} - void vmw_irq_uninstall(struct drm_device *dev) { struct vmw_private *dev_priv = vmw_priv(dev); @@ -306,8 +344,41 @@ void vmw_irq_uninstall(struct drm_device *dev) if (!(dev_priv->capabilities & SVGA_CAP_IRQMASK)) return; + if (!dev->irq_enabled) + return; + vmw_write(dev_priv, SVGA_REG_IRQMASK, 0); status = inl(dev_priv->io_start + VMWGFX_IRQSTATUS_PORT); outl(status, dev_priv->io_start + VMWGFX_IRQSTATUS_PORT); + + dev->irq_enabled = false; + free_irq(dev->irq, dev); +} + +/** + * vmw_irq_install - Install the irq handlers + * + * @dev: Pointer to the drm device. + * @irq: The irq number. + * Return: Zero if successful. Negative number otherwise. + */ +int vmw_irq_install(struct drm_device *dev, int irq) +{ + int ret; + + if (dev->irq_enabled) + return -EBUSY; + + vmw_irq_preinstall(dev); + + ret = request_threaded_irq(irq, vmw_irq_handler, vmw_thread_fn, + IRQF_SHARED, VMWGFX_DRIVER_NAME, dev); + if (ret < 0) + return ret; + + dev->irq_enabled = true; + dev->irq = irq; + + return ret; } diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c b/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c index 36dd7930bf5f..5d50e45ae274 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c @@ -2494,7 +2494,7 @@ void vmw_kms_helper_buffer_finish(struct vmw_private *dev_priv, if (file_priv) vmw_execbuf_copy_fence_user(dev_priv, vmw_fpriv(file_priv), ret, user_fence_rep, fence, - handle); + handle, -1, NULL); if (out_fence) *out_fence = fence; else diff --git a/include/uapi/drm/vmwgfx_drm.h b/include/uapi/drm/vmwgfx_drm.h index d9dfde9aa757..0bc784f5e0db 100644 --- a/include/uapi/drm/vmwgfx_drm.h +++ b/include/uapi/drm/vmwgfx_drm.h @@ -297,13 +297,17 @@ union drm_vmw_surface_reference_arg { * @version: Allows expanding the execbuf ioctl parameters without breaking * backwards compatibility, since user-space will always tell the kernel * which version it uses. - * @flags: Execbuf flags. None currently. + * @flags: Execbuf flags. + * @imported_fence_fd: FD for a fence imported from another device * * Argument to the DRM_VMW_EXECBUF Ioctl. */ #define DRM_VMW_EXECBUF_VERSION 2 +#define DRM_VMW_EXECBUF_FLAG_IMPORT_FENCE_FD (1 << 0) +#define DRM_VMW_EXECBUF_FLAG_EXPORT_FENCE_FD (1 << 1) + struct drm_vmw_execbuf_arg { __u64 commands; __u32 command_size; @@ -312,7 +316,7 @@ struct drm_vmw_execbuf_arg { __u32 version; __u32 flags; __u32 context_handle; - __u32 pad64; + __s32 imported_fence_fd; }; /** @@ -328,6 +332,7 @@ struct drm_vmw_execbuf_arg { * @passed_seqno: The highest seqno number processed by the hardware * so far. This can be used to mark user-space fence objects as signaled, and * to determine whether a fence seqno might be stale. + * @fd: FD associated with the fence, -1 if not exported * @error: This member should've been set to -EFAULT on submission. * The following actions should be take on completion: * error == -EFAULT: Fence communication failed. The host is synchronized. @@ -345,7 +350,7 @@ struct drm_vmw_fence_rep { __u32 mask; __u32 seqno; __u32 passed_seqno; - __u32 pad64; + __s32 fd; __s32 error; }; |