Will be needed for queries and drm event-driven throttling.
As a benefit, they help avoid stale user-space fence handles.
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Jakob Bornecrantz <jakob@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
vmwgfx-y := vmwgfx_execbuf.o vmwgfx_gmr.o vmwgfx_kms.o vmwgfx_drv.o \
vmwgfx_fb.o vmwgfx_ioctl.o vmwgfx_resource.o vmwgfx_buffer.o \
vmwgfx_fifo.o vmwgfx_irq.o vmwgfx_ldu.o vmwgfx_ttm_glue.o \
- vmwgfx_overlay.o vmwgfx_marker.o vmwgfx_gmrid_manager.o
+ vmwgfx_overlay.o vmwgfx_marker.o vmwgfx_gmrid_manager.o \
+ vmwgfx_fence.o
obj-$(CONFIG_DRM_VMWGFX) := vmwgfx.o
static void *vmw_sync_obj_ref(void *sync_obj)
{
- return sync_obj;
+
+ return (void *)
+ vmw_fence_obj_reference((struct vmw_fence_obj *) sync_obj);
}
static void vmw_sync_obj_unref(void **sync_obj)
{
- *sync_obj = NULL;
+ vmw_fence_obj_unreference((struct vmw_fence_obj **) sync_obj);
}
static int vmw_sync_obj_flush(void *sync_obj, void *sync_arg)
{
- struct vmw_private *dev_priv = (struct vmw_private *)sync_arg;
-
- mutex_lock(&dev_priv->hw_mutex);
- vmw_write(dev_priv, SVGA_REG_SYNC, SVGA_SYNC_GENERIC);
- mutex_unlock(&dev_priv->hw_mutex);
+ vmw_fence_obj_flush((struct vmw_fence_obj *) sync_obj);
return 0;
}
static bool vmw_sync_obj_signaled(void *sync_obj, void *sync_arg)
{
- struct vmw_private *dev_priv = (struct vmw_private *)sync_arg;
- uint32_t seqno = (unsigned long) sync_obj;
+ unsigned long flags = (unsigned long) sync_arg;
+ return vmw_fence_obj_signaled((struct vmw_fence_obj *) sync_obj,
+ (uint32_t) flags);
- return vmw_seqno_passed(dev_priv, seqno);
}
static int vmw_sync_obj_wait(void *sync_obj, void *sync_arg,
bool lazy, bool interruptible)
{
- struct vmw_private *dev_priv = (struct vmw_private *)sync_arg;
- uint32_t seqno = (unsigned long) sync_obj;
+ unsigned long flags = (unsigned long) sync_arg;
- return vmw_wait_seqno(dev_priv, false, seqno, false, 3*HZ);
+ return vmw_fence_obj_wait((struct vmw_fence_obj *) sync_obj,
+ (uint32_t) flags,
+ lazy, interruptible,
+ VMW_FENCE_WAIT_TIMEOUT);
}
struct ttm_bo_driver vmw_bo_driver = {
#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_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_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)
/**
* The core DRM version of this macro doesn't account for
DRM_AUTH | DRM_UNLOCKED),
VMW_IOCTL_DEF(VMW_EXECBUF, vmw_execbuf_ioctl,
DRM_AUTH | DRM_UNLOCKED),
- VMW_IOCTL_DEF(VMW_FENCE_WAIT, vmw_fence_wait_ioctl,
+ 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_GET_3D_CAP, vmw_get_cap_3d_ioctl,
DRM_AUTH | DRM_UNLOCKED),
DRM_ERROR("Unable to initialize FIFO.\n");
return ret;
}
+ vmw_fence_fifo_up(dev_priv->fman);
return 0;
}
static void vmw_release_device(struct vmw_private *dev_priv)
{
+ vmw_fence_fifo_down(dev_priv->fman);
vmw_fifo_release(dev_priv, &dev_priv->fifo);
}
goto out_no_device;
}
}
+
+ dev_priv->fman = vmw_fence_manager_init(dev_priv);
+ if (unlikely(dev_priv->fman == NULL))
+ goto out_no_fman;
ret = vmw_kms_init(dev_priv);
if (unlikely(ret != 0))
goto out_no_kms;
vmw_overlay_close(dev_priv);
vmw_kms_close(dev_priv);
out_no_kms:
+ vmw_fence_manager_takedown(dev_priv->fman);
+out_no_fman:
if (dev_priv->stealth)
pci_release_region(dev->pdev, 2);
else
}
vmw_kms_close(dev_priv);
vmw_overlay_close(dev_priv);
+ vmw_fence_manager_takedown(dev_priv->fman);
if (dev_priv->stealth)
pci_release_region(dev->pdev, 2);
else
#include "ttm/ttm_lock.h"
#include "ttm/ttm_execbuf_util.h"
#include "ttm/ttm_module.h"
+#include "vmwgfx_fence.h"
#define VMWGFX_DRIVER_DATE "20100927"
#define VMWGFX_DRIVER_MAJOR 1
#define VMW_PL_GMR TTM_PL_PRIV0
#define VMW_PL_FLAG_GMR TTM_PL_FLAG_PRIV0
+#define VMW_RES_CONTEXT ttm_driver_type0
+#define VMW_RES_SURFACE ttm_driver_type1
+#define VMW_RES_STREAM ttm_driver_type2
+#define VMW_RES_FENCE ttm_driver_type3
+
struct vmw_fpriv {
struct drm_master *locked_master;
struct ttm_object_file *tfile;
atomic_t fifo_queue_waiters;
uint32_t last_read_seqno;
spinlock_t irq_lock;
+ struct vmw_fence_manager *fman;
/*
* Device state
extern void vmw_irq_uninstall(struct drm_device *dev);
extern bool vmw_seqno_passed(struct vmw_private *dev_priv,
uint32_t seqno);
-extern int vmw_fence_wait_ioctl(struct drm_device *dev, void *data,
- struct drm_file *file_priv);
extern int vmw_fallback_wait(struct vmw_private *dev_priv,
bool lazy,
bool fifo_idle,
unsigned long timeout);
extern void vmw_update_seqno(struct vmw_private *dev_priv,
struct vmw_fifo_state *fifo_state);
-
+extern void vmw_seqno_waiter_add(struct vmw_private *dev_priv);
+extern void vmw_seqno_waiter_remove(struct vmw_private *dev_priv);
/**
* Rudimentary fence-like objects currently used only for throttling -
return NULL;
}
+static inline struct ttm_mem_global *vmw_mem_glob(struct vmw_private *dev_priv)
+{
+ return (struct ttm_mem_global *) dev_priv->mem_global_ref.object;
+}
#endif
val_buf = &sw_context->val_bufs[cur_validate_node];
val_buf->bo = ttm_bo_reference(bo);
val_buf->usage = TTM_USAGE_READWRITE;
- val_buf->new_sync_obj_arg = (void *) dev_priv;
+ val_buf->new_sync_obj_arg = (void *) DRM_VMW_FENCE_FLAG_EXEC;
list_add_tail(&val_buf->head, &sw_context->validate_nodes);
++sw_context->cur_val_buf;
}
return 0;
}
-
static int vmw_cmd_dma(struct vmw_private *dev_priv,
struct vmw_sw_context *sw_context,
SVGA3dCmdHeader *header)
return 0;
}
+/**
+ * vmw_execbuf_fence_commands - create and submit a command stream fence
+ *
+ * Creates a fence object and submits a command stream marker.
+ * If this fails for some reason, We sync the fifo and return NULL.
+ * It is then safe to fence buffers with a NULL pointer.
+ */
+
+int vmw_execbuf_fence_commands(struct drm_file *file_priv,
+ struct vmw_private *dev_priv,
+ struct vmw_fence_obj **p_fence,
+ uint32_t *p_handle)
+{
+ uint32_t sequence;
+ int ret;
+ bool synced = false;
+
+
+ ret = vmw_fifo_send_fence(dev_priv, &sequence);
+ if (unlikely(ret != 0)) {
+ DRM_ERROR("Fence submission error. Syncing.\n");
+ synced = true;
+ }
+
+ if (p_handle != NULL)
+ ret = vmw_user_fence_create(file_priv, dev_priv->fman,
+ sequence,
+ DRM_VMW_FENCE_FLAG_EXEC,
+ p_fence, p_handle);
+ else
+ ret = vmw_fence_create(dev_priv->fman, sequence,
+ DRM_VMW_FENCE_FLAG_EXEC,
+ p_fence);
+
+ if (unlikely(ret != 0 && !synced)) {
+ (void) vmw_fallback_wait(dev_priv, false, false,
+ sequence, false,
+ VMW_FENCE_WAIT_TIMEOUT);
+ *p_fence = NULL;
+ }
+
+ return 0;
+}
+
int vmw_execbuf_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
int ret;
void *user_cmd;
void *cmd;
- uint32_t seqno;
struct vmw_sw_context *sw_context = &dev_priv->ctx;
struct vmw_master *vmaster = vmw_master(file_priv->master);
+ struct vmw_fence_obj *fence;
+ uint32_t handle;
ret = ttm_read_lock(&vmaster->lock, true);
if (unlikely(ret != 0))
memcpy(cmd, sw_context->cmd_bounce, arg->command_size);
vmw_fifo_commit(dev_priv, arg->command_size);
- ret = vmw_fifo_send_fence(dev_priv, &seqno);
-
- ttm_eu_fence_buffer_objects(&sw_context->validate_nodes,
- (void *)(unsigned long) seqno);
- vmw_clear_validations(sw_context);
- mutex_unlock(&dev_priv->cmdbuf_mutex);
-
+ user_fence_rep = (struct drm_vmw_fence_rep __user *)
+ (unsigned long)arg->fence_rep;
+ ret = vmw_execbuf_fence_commands(file_priv, dev_priv,
+ &fence,
+ (user_fence_rep) ? &handle : NULL);
/*
* This error is harmless, because if fence submission fails,
- * vmw_fifo_send_fence will sync.
+ * vmw_fifo_send_fence will sync. The error will be propagated to
+ * user-space in @fence_rep
*/
if (ret != 0)
DRM_ERROR("Fence submission error. Syncing.\n");
- fence_rep.error = ret;
- fence_rep.fence_seq = (uint64_t) seqno;
- fence_rep.pad64 = 0;
+ ttm_eu_fence_buffer_objects(&sw_context->validate_nodes,
+ (void *) fence);
- user_fence_rep = (struct drm_vmw_fence_rep __user *)
- (unsigned long)arg->fence_rep;
+ vmw_clear_validations(sw_context);
+ mutex_unlock(&dev_priv->cmdbuf_mutex);
- /*
- * copy_to_user errors will be detected by user space not
- * seeing fence_rep::error filled in.
- */
+ if (user_fence_rep) {
+ fence_rep.error = ret;
+ fence_rep.handle = handle;
+ fence_rep.seqno = fence->seqno;
+ vmw_update_seqno(dev_priv, &dev_priv->fifo);
+ fence_rep.passed_seqno = dev_priv->last_read_seqno;
+
+ /*
+ * copy_to_user errors will be detected by user space not
+ * seeing fence_rep::error filled in. Typically
+ * user-space would have pre-set that member to -EFAULT.
+ */
+ ret = copy_to_user(user_fence_rep, &fence_rep,
+ sizeof(fence_rep));
+
+ /*
+ * User-space lost the fence object. We need to sync
+ * and unreference the handle.
+ */
+ if (unlikely(ret != 0) && (fence_rep.error == 0)) {
+ BUG_ON(fence == NULL);
+
+ ttm_ref_object_base_unref(vmw_fpriv(file_priv)->tfile,
+ handle, TTM_REF_USAGE);
+ DRM_ERROR("Fence copy error. Syncing.\n");
+ (void) vmw_fence_obj_wait(fence,
+ fence->signal_mask,
+ false, false,
+ VMW_FENCE_WAIT_TIMEOUT);
+ }
+ }
- ret = copy_to_user(user_fence_rep, &fence_rep, sizeof(fence_rep));
+ if (likely(fence != NULL))
+ vmw_fence_obj_unreference(&fence);
vmw_kms_cursor_post_execbuf(dev_priv);
ttm_read_unlock(&vmaster->lock);
--- /dev/null
+/**************************************************************************
+ *
+ * Copyright © 2011 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 "drmP.h"
+#include "vmwgfx_drv.h"
+
+#define VMW_FENCE_WRAP (1 << 31)
+
+struct vmw_fence_manager {
+ int num_fence_objects;
+ struct vmw_private *dev_priv;
+ spinlock_t lock;
+ u32 next_seqno;
+ struct list_head fence_list;
+ struct work_struct work;
+ u32 user_fence_size;
+ u32 fence_size;
+ bool fifo_down;
+ struct list_head cleanup_list;
+};
+
+struct vmw_user_fence {
+ struct ttm_base_object base;
+ struct vmw_fence_obj fence;
+};
+
+/**
+ * vmw_fence_destroy_locked
+ *
+ */
+
+static void vmw_fence_obj_destroy_locked(struct kref *kref)
+{
+ struct vmw_fence_obj *fence =
+ container_of(kref, struct vmw_fence_obj, kref);
+
+ struct vmw_fence_manager *fman = fence->fman;
+ unsigned int num_fences;
+
+ list_del_init(&fence->head);
+ num_fences = --fman->num_fence_objects;
+ spin_unlock_irq(&fman->lock);
+ if (fence->destroy)
+ fence->destroy(fence);
+ else
+ kfree(fence);
+
+ spin_lock_irq(&fman->lock);
+}
+
+
+/**
+ * Execute signal actions on fences recently signaled.
+ * This is done from a workqueue so we don't have to execute
+ * signal actions from atomic context.
+ */
+
+static void vmw_fence_work_func(struct work_struct *work)
+{
+ struct vmw_fence_manager *fman =
+ container_of(work, struct vmw_fence_manager, work);
+ struct list_head list;
+ struct vmw_fence_action *action, *next_action;
+
+ do {
+ INIT_LIST_HEAD(&list);
+ spin_lock_irq(&fman->lock);
+ list_splice_init(&fman->cleanup_list, &list);
+ spin_unlock_irq(&fman->lock);
+
+ if (list_empty(&list))
+ return;
+
+ /*
+ * At this point, only we should be able to manipulate the
+ * list heads of the actions we have on the private list.
+ */
+
+ list_for_each_entry_safe(action, next_action, &list, head) {
+ list_del_init(&action->head);
+ action->cleanup(action);
+ }
+ } while (1);
+}
+
+struct vmw_fence_manager *vmw_fence_manager_init(struct vmw_private *dev_priv)
+{
+ struct vmw_fence_manager *fman = kzalloc(sizeof(*fman), GFP_KERNEL);
+
+ if (unlikely(fman == NULL))
+ return NULL;
+
+ fman->dev_priv = dev_priv;
+ spin_lock_init(&fman->lock);
+ INIT_LIST_HEAD(&fman->fence_list);
+ INIT_LIST_HEAD(&fman->cleanup_list);
+ INIT_WORK(&fman->work, &vmw_fence_work_func);
+ fman->fifo_down = true;
+ fman->user_fence_size = ttm_round_pot(sizeof(struct vmw_user_fence));
+ fman->fence_size = ttm_round_pot(sizeof(struct vmw_fence_obj));
+
+ return fman;
+}
+
+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);
+ lists_empty = list_empty(&fman->fence_list) &&
+ list_empty(&fman->cleanup_list);
+ spin_unlock_irqrestore(&fman->lock, irq_flags);
+
+ BUG_ON(!lists_empty);
+ kfree(fman);
+}
+
+static int vmw_fence_obj_init(struct vmw_fence_manager *fman,
+ struct vmw_fence_obj *fence,
+ u32 seqno,
+ uint32_t mask,
+ void (*destroy) (struct vmw_fence_obj *fence))
+{
+ unsigned long irq_flags;
+ unsigned int num_fences;
+ int ret = 0;
+
+ fence->seqno = seqno;
+ INIT_LIST_HEAD(&fence->seq_passed_actions);
+ fence->fman = fman;
+ fence->signaled = 0;
+ fence->signal_mask = mask;
+ kref_init(&fence->kref);
+ fence->destroy = destroy;
+ init_waitqueue_head(&fence->queue);
+
+ spin_lock_irqsave(&fman->lock, irq_flags);
+ if (unlikely(fman->fifo_down)) {
+ ret = -EBUSY;
+ goto out_unlock;
+ }
+ list_add_tail(&fence->head, &fman->fence_list);
+ num_fences = ++fman->num_fence_objects;
+
+out_unlock:
+ spin_unlock_irqrestore(&fman->lock, irq_flags);
+ return ret;
+
+}
+
+struct vmw_fence_obj *vmw_fence_obj_reference(struct vmw_fence_obj *fence)
+{
+ kref_get(&fence->kref);
+ return fence;
+}
+
+/**
+ * vmw_fence_obj_unreference
+ *
+ * Note that this function may not be entered with disabled irqs since
+ * it may re-enable them in the destroy function.
+ *
+ */
+void vmw_fence_obj_unreference(struct vmw_fence_obj **fence_p)
+{
+ struct vmw_fence_obj *fence = *fence_p;
+ struct vmw_fence_manager *fman = fence->fman;
+
+ *fence_p = NULL;
+ spin_lock_irq(&fman->lock);
+ BUG_ON(atomic_read(&fence->kref.refcount) == 0);
+ kref_put(&fence->kref, vmw_fence_obj_destroy_locked);
+ spin_unlock_irq(&fman->lock);
+}
+
+void vmw_fences_perform_actions(struct vmw_fence_manager *fman,
+ struct list_head *list)
+{
+ struct vmw_fence_action *action, *next_action;
+
+ list_for_each_entry_safe(action, next_action, list, head) {
+ list_del_init(&action->head);
+ if (action->seq_passed != NULL)
+ action->seq_passed(action);
+
+ /*
+ * Add the cleanup action to the cleanup list so that
+ * it will be performed by a worker task.
+ */
+
+ if (action->cleanup != NULL)
+ list_add_tail(&action->head, &fman->cleanup_list);
+ }
+}
+
+void vmw_fences_update(struct vmw_fence_manager *fman, u32 seqno)
+{
+ unsigned long flags;
+ struct vmw_fence_obj *fence, *next_fence;
+ struct list_head action_list;
+
+ spin_lock_irqsave(&fman->lock, flags);
+ list_for_each_entry_safe(fence, next_fence, &fman->fence_list, head) {
+ if (seqno - fence->seqno < VMW_FENCE_WRAP) {
+ list_del_init(&fence->head);
+ fence->signaled |= DRM_VMW_FENCE_FLAG_EXEC;
+ INIT_LIST_HEAD(&action_list);
+ list_splice_init(&fence->seq_passed_actions,
+ &action_list);
+ vmw_fences_perform_actions(fman, &action_list);
+ wake_up_all(&fence->queue);
+ }
+
+ }
+ if (!list_empty(&fman->cleanup_list))
+ (void) schedule_work(&fman->work);
+ spin_unlock_irqrestore(&fman->lock, flags);
+}
+
+
+bool vmw_fence_obj_signaled(struct vmw_fence_obj *fence,
+ uint32_t flags)
+{
+ struct vmw_fence_manager *fman = fence->fman;
+ unsigned long irq_flags;
+ uint32_t signaled;
+
+ spin_lock_irqsave(&fman->lock, irq_flags);
+ signaled = fence->signaled;
+ spin_unlock_irqrestore(&fman->lock, irq_flags);
+
+ flags &= fence->signal_mask;
+ if ((signaled & flags) == flags)
+ return 1;
+
+ if ((signaled & DRM_VMW_FENCE_FLAG_EXEC) == 0) {
+ struct vmw_private *dev_priv = fman->dev_priv;
+ __le32 __iomem *fifo_mem = dev_priv->mmio_virt;
+ u32 seqno;
+
+ seqno = ioread32(fifo_mem + SVGA_FIFO_FENCE);
+ vmw_fences_update(fman, seqno);
+ }
+
+ spin_lock_irqsave(&fman->lock, irq_flags);
+ signaled = fence->signaled;
+ spin_unlock_irqrestore(&fman->lock, irq_flags);
+
+ return ((signaled & flags) == flags);
+}
+
+int vmw_fence_obj_wait(struct vmw_fence_obj *fence,
+ uint32_t flags, bool lazy,
+ bool interruptible, unsigned long timeout)
+{
+ struct vmw_private *dev_priv = fence->fman->dev_priv;
+ long ret;
+
+ if (likely(vmw_fence_obj_signaled(fence, flags)))
+ return 0;
+
+ vmw_fifo_ping_host(dev_priv, SVGA_SYNC_GENERIC);
+ vmw_seqno_waiter_add(dev_priv);
+
+ if (interruptible)
+ ret = wait_event_interruptible_timeout
+ (fence->queue,
+ vmw_fence_obj_signaled(fence, flags),
+ timeout);
+ else
+ ret = wait_event_timeout
+ (fence->queue,
+ vmw_fence_obj_signaled(fence, flags),
+ timeout);
+
+ vmw_seqno_waiter_remove(dev_priv);
+
+ if (unlikely(ret == 0))
+ ret = -EBUSY;
+ else if (likely(ret > 0))
+ ret = 0;
+
+ return ret;
+}
+
+void vmw_fence_obj_flush(struct vmw_fence_obj *fence)
+{
+ struct vmw_private *dev_priv = fence->fman->dev_priv;
+
+ vmw_fifo_ping_host(dev_priv, SVGA_SYNC_GENERIC);
+}
+
+static void vmw_fence_destroy(struct vmw_fence_obj *fence)
+{
+ struct vmw_fence_manager *fman = fence->fman;
+
+ kfree(fence);
+ /*
+ * Free kernel space accounting.
+ */
+ ttm_mem_global_free(vmw_mem_glob(fman->dev_priv),
+ fman->fence_size);
+}
+
+int vmw_fence_create(struct vmw_fence_manager *fman,
+ uint32_t seqno,
+ uint32_t mask,
+ struct vmw_fence_obj **p_fence)
+{
+ struct ttm_mem_global *mem_glob = vmw_mem_glob(fman->dev_priv);
+ struct vmw_fence_obj *fence;
+ int ret;
+
+ ret = ttm_mem_global_alloc(mem_glob, fman->fence_size,
+ false, false);
+ if (unlikely(ret != 0))
+ return ret;
+
+ fence = kzalloc(sizeof(*fence), GFP_KERNEL);
+ if (unlikely(fence == NULL)) {
+ ret = -ENOMEM;
+ goto out_no_object;
+ }
+
+ ret = vmw_fence_obj_init(fman, fence, seqno, mask,
+ vmw_fence_destroy);
+ if (unlikely(ret != 0))
+ goto out_err_init;
+
+ *p_fence = fence;
+ return 0;
+
+out_err_init:
+ kfree(fence);
+out_no_object:
+ ttm_mem_global_free(mem_glob, fman->fence_size);
+ return ret;
+}
+
+
+static void vmw_user_fence_destroy(struct vmw_fence_obj *fence)
+{
+ struct vmw_user_fence *ufence =
+ container_of(fence, struct vmw_user_fence, fence);
+ struct vmw_fence_manager *fman = fence->fman;
+
+ kfree(ufence);
+ /*
+ * Free kernel space accounting.
+ */
+ ttm_mem_global_free(vmw_mem_glob(fman->dev_priv),
+ fman->user_fence_size);
+}
+
+static void vmw_user_fence_base_release(struct ttm_base_object **p_base)
+{
+ struct ttm_base_object *base = *p_base;
+ struct vmw_user_fence *ufence =
+ container_of(base, struct vmw_user_fence, base);
+ struct vmw_fence_obj *fence = &ufence->fence;
+
+ *p_base = NULL;
+ vmw_fence_obj_unreference(&fence);
+}
+
+int vmw_user_fence_create(struct drm_file *file_priv,
+ struct vmw_fence_manager *fman,
+ uint32_t seqno,
+ uint32_t mask,
+ struct vmw_fence_obj **p_fence,
+ uint32_t *p_handle)
+{
+ struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
+ struct vmw_user_fence *ufence;
+ struct vmw_fence_obj *tmp;
+ struct ttm_mem_global *mem_glob = vmw_mem_glob(fman->dev_priv);
+ int ret;
+
+ /*
+ * Kernel memory space accounting, since this object may
+ * be created by a user-space request.
+ */
+
+ ret = ttm_mem_global_alloc(mem_glob, fman->user_fence_size,
+ false, false);
+ if (unlikely(ret != 0))
+ return ret;
+
+ ufence = kzalloc(sizeof(*ufence), GFP_KERNEL);
+ if (unlikely(ufence == NULL)) {
+ ret = -ENOMEM;
+ goto out_no_object;
+ }
+
+ ret = vmw_fence_obj_init(fman, &ufence->fence, seqno,
+ mask, vmw_user_fence_destroy);
+ if (unlikely(ret != 0)) {
+ kfree(ufence);
+ goto out_no_object;
+ }
+
+ /*
+ * The base object holds a reference which is freed in
+ * vmw_user_fence_base_release.
+ */
+ tmp = vmw_fence_obj_reference(&ufence->fence);
+ ret = ttm_base_object_init(tfile, &ufence->base, false,
+ VMW_RES_FENCE,
+ &vmw_user_fence_base_release, NULL);
+
+
+ if (unlikely(ret != 0)) {
+ /*
+ * Free the base object's reference
+ */
+ vmw_fence_obj_unreference(&tmp);
+ goto out_err;
+ }
+
+ *p_fence = &ufence->fence;
+ *p_handle = ufence->base.hash.key;
+
+ return 0;
+out_err:
+ tmp = &ufence->fence;
+ vmw_fence_obj_unreference(&tmp);
+out_no_object:
+ ttm_mem_global_free(mem_glob, fman->user_fence_size);
+ return ret;
+}
+
+
+/**
+ * vmw_fence_fifo_down - signal all unsignaled fence objects.
+ */
+
+void vmw_fence_fifo_down(struct vmw_fence_manager *fman)
+{
+ unsigned long irq_flags;
+ struct list_head action_list;
+ int ret;
+
+ /*
+ * The list may be altered while we traverse it, so always
+ * restart when we've released the fman->lock.
+ */
+
+ spin_lock_irqsave(&fman->lock, irq_flags);
+ 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);
+ kref_get(&fence->kref);
+ spin_unlock_irq(&fman->lock);
+
+ ret = vmw_fence_obj_wait(fence, fence->signal_mask,
+ false, false,
+ VMW_FENCE_WAIT_TIMEOUT);
+
+ if (unlikely(ret != 0)) {
+ list_del_init(&fence->head);
+ fence->signaled |= DRM_VMW_FENCE_FLAG_EXEC;
+ INIT_LIST_HEAD(&action_list);
+ list_splice_init(&fence->seq_passed_actions,
+ &action_list);
+ vmw_fences_perform_actions(fman, &action_list);
+ wake_up_all(&fence->queue);
+ }
+
+ spin_lock_irq(&fman->lock);
+
+ BUG_ON(!list_empty(&fence->head));
+ kref_put(&fence->kref, vmw_fence_obj_destroy_locked);
+ }
+ spin_unlock_irqrestore(&fman->lock, irq_flags);
+}
+
+void vmw_fence_fifo_up(struct vmw_fence_manager *fman)
+{
+ unsigned long irq_flags;
+
+ spin_lock_irqsave(&fman->lock, irq_flags);
+ fman->fifo_down = false;
+ spin_unlock_irqrestore(&fman->lock, irq_flags);
+}
+
+
+int vmw_fence_obj_wait_ioctl(struct drm_device *dev, void *data,
+ struct drm_file *file_priv)
+{
+ struct drm_vmw_fence_wait_arg *arg =
+ (struct drm_vmw_fence_wait_arg *)data;
+ unsigned long timeout;
+ struct ttm_base_object *base;
+ struct vmw_fence_obj *fence;
+ struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
+ int ret;
+ uint64_t wait_timeout = ((uint64_t)arg->timeout_us * HZ);
+
+ /*
+ * 64-bit division not present on 32-bit systems, so do an
+ * approximation. (Divide by 1000000).
+ */
+
+ wait_timeout = (wait_timeout >> 20) + (wait_timeout >> 24) -
+ (wait_timeout >> 26);
+
+ if (!arg->cookie_valid) {
+ arg->cookie_valid = 1;
+ arg->kernel_cookie = jiffies + wait_timeout;
+ }
+
+ base = ttm_base_object_lookup(tfile, arg->handle);
+ if (unlikely(base == NULL)) {
+ printk(KERN_ERR "Wait invalid fence object handle "
+ "0x%08lx.\n",
+ (unsigned long)arg->handle);
+ return -EINVAL;
+ }
+
+ fence = &(container_of(base, struct vmw_user_fence, base)->fence);
+
+ timeout = jiffies;
+ if (time_after_eq(timeout, (unsigned long)arg->kernel_cookie)) {
+ ret = ((vmw_fence_obj_signaled(fence, arg->flags)) ?
+ 0 : -EBUSY);
+ goto out;
+ }
+
+ timeout = (unsigned long)arg->kernel_cookie - timeout;
+
+ ret = vmw_fence_obj_wait(fence, arg->flags, arg->lazy, true, timeout);
+
+out:
+ ttm_base_object_unref(&base);
+
+ /*
+ * Optionally unref the fence object.
+ */
+
+ if (ret == 0 && (arg->wait_options & DRM_VMW_WAIT_OPTION_UNREF))
+ return ttm_ref_object_base_unref(tfile, arg->handle,
+ TTM_REF_USAGE);
+ return ret;
+}
+
+int vmw_fence_obj_signaled_ioctl(struct drm_device *dev, void *data,
+ struct drm_file *file_priv)
+{
+ struct drm_vmw_fence_signaled_arg *arg =
+ (struct drm_vmw_fence_signaled_arg *) data;
+ struct ttm_base_object *base;
+ struct vmw_fence_obj *fence;
+ struct vmw_fence_manager *fman;
+ struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
+ struct vmw_private *dev_priv = vmw_priv(dev);
+
+ base = ttm_base_object_lookup(tfile, arg->handle);
+ if (unlikely(base == NULL)) {
+ printk(KERN_ERR "Fence signaled invalid fence object handle "
+ "0x%08lx.\n",
+ (unsigned long)arg->handle);
+ return -EINVAL;
+ }
+
+ fence = &(container_of(base, struct vmw_user_fence, base)->fence);
+ fman = fence->fman;
+
+ arg->signaled = vmw_fence_obj_signaled(fence, arg->flags);
+ spin_lock_irq(&fman->lock);
+
+ arg->signaled_flags = fence->signaled;
+ arg->passed_seqno = dev_priv->last_read_seqno;
+ spin_unlock_irq(&fman->lock);
+
+ ttm_base_object_unref(&base);
+
+ return 0;
+}
+
+
+int vmw_fence_obj_unref_ioctl(struct drm_device *dev, void *data,
+ struct drm_file *file_priv)
+{
+ struct drm_vmw_fence_arg *arg =
+ (struct drm_vmw_fence_arg *) data;
+
+ return ttm_ref_object_base_unref(vmw_fpriv(file_priv)->tfile,
+ arg->handle,
+ TTM_REF_USAGE);
+}
--- /dev/null
+/**************************************************************************
+ *
+ * Copyright © 2011 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.
+ *
+ **************************************************************************/
+
+#ifndef _VMWGFX_FENCE_H_
+
+#define VMW_FENCE_WAIT_TIMEOUT (5*HZ)
+
+struct vmw_private;
+
+struct vmw_fence_manager;
+
+/**
+ *
+ *
+ */
+struct vmw_fence_action {
+ struct list_head head;
+ void (*seq_passed) (struct vmw_fence_action *action);
+ void (*cleanup) (struct vmw_fence_action *action);
+};
+
+struct vmw_fence_obj {
+ struct kref kref;
+ u32 seqno;
+
+ struct vmw_fence_manager *fman;
+ struct list_head head;
+ uint32_t signaled;
+ uint32_t signal_mask;
+ struct list_head seq_passed_actions;
+ void (*destroy)(struct vmw_fence_obj *fence);
+ wait_queue_head_t queue;
+};
+
+extern struct vmw_fence_manager *
+vmw_fence_manager_init(struct vmw_private *dev_priv);
+
+extern void vmw_fence_manager_takedown(struct vmw_fence_manager *fman);
+
+extern void vmw_fence_obj_unreference(struct vmw_fence_obj **fence_p);
+
+extern struct vmw_fence_obj *
+vmw_fence_obj_reference(struct vmw_fence_obj *fence);
+
+extern void vmw_fences_update(struct vmw_fence_manager *fman,
+ u32 sequence);
+
+extern bool vmw_fence_obj_signaled(struct vmw_fence_obj *fence,
+ uint32_t flags);
+
+extern int vmw_fence_obj_wait(struct vmw_fence_obj *fence, uint32_t flags,
+ bool lazy,
+ bool interruptible, unsigned long timeout);
+
+extern void vmw_fence_obj_flush(struct vmw_fence_obj *fence);
+
+extern int vmw_fence_create(struct vmw_fence_manager *fman,
+ uint32_t seqno,
+ uint32_t mask,
+ struct vmw_fence_obj **p_fence);
+
+extern int vmw_user_fence_create(struct drm_file *file_priv,
+ struct vmw_fence_manager *fman,
+ uint32_t sequence,
+ uint32_t mask,
+ struct vmw_fence_obj **p_fence,
+ uint32_t *p_handle);
+
+extern void vmw_fence_fifo_up(struct vmw_fence_manager *fman);
+
+extern void vmw_fence_fifo_down(struct vmw_fence_manager *fman);
+
+extern int vmw_fence_obj_wait_ioctl(struct drm_device *dev, void *data,
+ struct drm_file *file_priv);
+
+extern int vmw_fence_obj_signaled_ioctl(struct drm_device *dev, void *data,
+ struct drm_file *file_priv);
+
+extern int vmw_fence_obj_unref_ioctl(struct drm_device *dev, void *data,
+ struct drm_file *file_priv);
+#endif /* _VMWGFX_FENCE_H_ */
status = inl(dev_priv->io_start + VMWGFX_IRQSTATUS_PORT);
spin_unlock(&dev_priv->irq_lock);
- if (status & SVGA_IRQFLAG_ANY_FENCE)
+ if (status & SVGA_IRQFLAG_ANY_FENCE) {
+ __le32 __iomem *fifo_mem = dev_priv->mmio_virt;
+ uint32_t seqno = ioread32(fifo_mem + SVGA_FIFO_FENCE);
+
+ vmw_fences_update(dev_priv->fman, seqno);
wake_up_all(&dev_priv->fence_queue);
+ }
if (status & SVGA_IRQFLAG_FIFO_PROGRESS)
wake_up_all(&dev_priv->fifo_queue);
struct vmw_fifo_state *fifo_state)
{
__le32 __iomem *fifo_mem = dev_priv->mmio_virt;
-
uint32_t seqno = ioread32(fifo_mem + SVGA_FIFO_FENCE);
if (dev_priv->last_read_seqno != seqno) {
dev_priv->last_read_seqno = seqno;
vmw_marker_pull(&fifo_state->marker_queue, seqno);
+ vmw_fences_update(dev_priv->fman, seqno);
}
}
return ret;
}
-static void vmw_seqno_waiter_add(struct vmw_private *dev_priv)
+void vmw_seqno_waiter_add(struct vmw_private *dev_priv)
{
mutex_lock(&dev_priv->hw_mutex);
if (dev_priv->fence_queue_waiters++ == 0) {
mutex_unlock(&dev_priv->hw_mutex);
}
-static void vmw_seqno_waiter_remove(struct vmw_private *dev_priv)
+void vmw_seqno_waiter_remove(struct vmw_private *dev_priv)
{
mutex_lock(&dev_priv->hw_mutex);
if (--dev_priv->fence_queue_waiters == 0) {
status = inl(dev_priv->io_start + VMWGFX_IRQSTATUS_PORT);
outl(status, dev_priv->io_start + VMWGFX_IRQSTATUS_PORT);
}
-
-#define VMW_FENCE_WAIT_TIMEOUT 3*HZ;
-
-int vmw_fence_wait_ioctl(struct drm_device *dev, void *data,
- struct drm_file *file_priv)
-{
- struct drm_vmw_fence_wait_arg *arg =
- (struct drm_vmw_fence_wait_arg *)data;
- unsigned long timeout;
-
- if (!arg->cookie_valid) {
- arg->cookie_valid = 1;
- arg->kernel_cookie = jiffies + VMW_FENCE_WAIT_TIMEOUT;
- }
-
- timeout = jiffies;
- if (time_after_eq(timeout, (unsigned long)arg->kernel_cookie))
- return -EBUSY;
-
- timeout = (unsigned long)arg->kernel_cookie - timeout;
- return vmw_wait_seqno(vmw_priv(dev), true, arg->seqno, true, timeout);
-}
#include "ttm/ttm_placement.h"
#include "drmP.h"
-#define VMW_RES_CONTEXT ttm_driver_type0
-#define VMW_RES_SURFACE ttm_driver_type1
-#define VMW_RES_STREAM ttm_driver_type2
-
struct vmw_user_context {
struct ttm_base_object base;
struct vmw_resource res;
#define DRM_VMW_UNREF_SURFACE 10
#define DRM_VMW_REF_SURFACE 11
#define DRM_VMW_EXECBUF 12
-#define DRM_VMW_FENCE_WAIT 13
-#define DRM_VMW_GET_3D_CAP 14
+#define DRM_VMW_GET_3D_CAP 13
+#define DRM_VMW_FENCE_WAIT 14
+#define DRM_VMW_FENCE_SIGNALED 15
+#define DRM_VMW_FENCE_UNREF 16
+#define DRM_VMW_FENCE_EVENT 17
+
/*************************************************************************/
/**
uint32_t command_size;
uint32_t throttle_us;
uint64_t fence_rep;
- uint32_t version;
- uint32_t flags;
+ uint32_t version;
+ uint32_t flags;
};
/**
* struct drm_vmw_fence_rep
*
- * @fence_seq: Fence seqno associated with a command submission.
+ * @handle: Fence object handle for fence associated with a command submission.
+ * @mask: Fence flags relevant for this fence object.
+ * @seqno: Fence sequence number in fifo. A fence object with a lower
+ * seqno will signal the EXEC flag before a fence object with a higher
+ * seqno. This can be used by user-space to avoid kernel calls to determine
+ * whether a fence has signaled the EXEC flag. Note that @seqno will
+ * wrap at 32-bit.
+ * @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.
* @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.
*/
struct drm_vmw_fence_rep {
- uint64_t fence_seq;
- int32_t error;
+ uint32_t handle;
+ uint32_t mask;
+ uint32_t seqno;
+ uint32_t passed_seqno;
uint32_t pad64;
+ int32_t error;
};
/*************************************************************************/
uint32_t pad64;
};
-
-struct drm_vmw_fence_wait_arg {
- uint64_t seqno;
- uint64_t kernel_cookie;
- int32_t cookie_valid;
- int32_t pad64;
-};
-
/*************************************************************************/
/**
* DRM_VMW_CONTROL_STREAM - Control overlays, aka streams.
* Return a single stream that was claimed by this process. Also makes
* sure that the stream has been stopped.
*/
+
/*************************************************************************/
/**
* DRM_VMW_GET_3D_CAP
uint64_t rects;
};
+
+/*************************************************************************/
+/**
+ * DRM_VMW_FENCE_WAIT
+ *
+ * Waits for a fence object to signal. The wait is interruptible, so that
+ * signals may be delivered during the interrupt. The wait may timeout,
+ * in which case the calls returns -EBUSY. If the wait is restarted,
+ * that is restarting without resetting @cookie_valid to zero,
+ * the timeout is computed from the first call.
+ *
+ * The flags argument to the DRM_VMW_FENCE_WAIT ioctl indicates what to wait
+ * on:
+ * DRM_VMW_FENCE_FLAG_EXEC: All commands ahead of the fence in the command
+ * stream
+ * have executed.
+ * DRM_VMW_FENCE_FLAG_QUERY: All query results resulting from query finish
+ * commands
+ * in the buffer given to the EXECBUF ioctl returning the fence object handle
+ * are available to user-space.
+ *
+ * DRM_VMW_WAIT_OPTION_UNREF: If this wait option is given, and the
+ * fenc wait ioctl returns 0, the fence object has been unreferenced after
+ * the wait.
+ */
+
+#define DRM_VMW_FENCE_FLAG_EXEC (1 << 0)
+#define DRM_VMW_FENCE_FLAG_QUERY (1 << 1)
+
+#define DRM_VMW_WAIT_OPTION_UNREF (1 << 0)
+
+/**
+ * struct drm_vmw_fence_wait_arg
+ *
+ * @handle: Fence object handle as returned by the DRM_VMW_EXECBUF ioctl.
+ * @cookie_valid: Must be reset to 0 on first call. Left alone on restart.
+ * @kernel_cookie: Set to 0 on first call. Left alone on restart.
+ * @timeout_us: Wait timeout in microseconds. 0 for indefinite timeout.
+ * @lazy: Set to 1 if timing is not critical. Allow more than a kernel tick
+ * before returning.
+ * @flags: Fence flags to wait on.
+ * @wait_options: Options that control the behaviour of the wait ioctl.
+ *
+ * Input argument to the DRM_VMW_FENCE_WAIT ioctl.
+ */
+
+struct drm_vmw_fence_wait_arg {
+ uint32_t handle;
+ int32_t cookie_valid;
+ uint64_t kernel_cookie;
+ uint64_t timeout_us;
+ int32_t lazy;
+ int32_t flags;
+ int32_t wait_options;
+ int32_t pad64;
+};
+
+/*************************************************************************/
+/**
+ * DRM_VMW_FENCE_SIGNALED
+ *
+ * Checks if a fence object is signaled..
+ */
+
+/**
+ * struct drm_vmw_fence_signaled_arg
+ *
+ * @handle: Fence object handle as returned by the DRM_VMW_EXECBUF ioctl.
+ * @flags: Fence object flags input to DRM_VMW_FENCE_SIGNALED ioctl
+ * @signaled: Out: Flags signaled.
+ * @sequence: Out: Highest sequence passed so far. Can be used to signal the
+ * EXEC flag of user-space fence objects.
+ *
+ * Input/Output argument to the DRM_VMW_FENCE_SIGNALED and DRM_VMW_FENCE_UNREF
+ * ioctls.
+ */
+
+struct drm_vmw_fence_signaled_arg {
+ uint32_t handle;
+ uint32_t flags;
+ int32_t signaled;
+ uint32_t passed_seqno;
+ uint32_t signaled_flags;
+ uint32_t pad64;
+};
+
+/*************************************************************************/
+/**
+ * DRM_VMW_FENCE_UNREF
+ *
+ * Unreferences a fence object, and causes it to be destroyed if there are no
+ * other references to it.
+ *
+ */
+
+/**
+ * struct drm_vmw_fence_arg
+ *
+ * @handle: Fence object handle as returned by the DRM_VMW_EXECBUF ioctl.
+ *
+ * Input/Output argument to the DRM_VMW_FENCE_UNREF ioctl..
+ */
+
+struct drm_vmw_fence_arg {
+ uint32_t handle;
+ uint32_t pad64;
+};
+
+
+
#endif
projects / karo-tx-linux.git / commitdiff