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_fence.o
+ vmwgfx_fence.o vmwgfx_dmabuf.o
obj-$(CONFIG_DRM_VMWGFX) := vmwgfx.o
static uint32_t gmr_placement_flags = VMW_PL_FLAG_GMR |
TTM_PL_FLAG_CACHED;
+static uint32_t gmr_ne_placement_flags = VMW_PL_FLAG_GMR |
+ TTM_PL_FLAG_CACHED |
+ TTM_PL_FLAG_NO_EVICT;
+
struct ttm_placement vmw_vram_placement = {
.fpfn = 0,
.lpfn = 0,
.busy_placement = &gmr_placement_flags
};
+static uint32_t vram_gmr_ne_placement_flags[] = {
+ TTM_PL_FLAG_VRAM | TTM_PL_FLAG_CACHED | TTM_PL_FLAG_NO_EVICT,
+ VMW_PL_FLAG_GMR | TTM_PL_FLAG_CACHED | TTM_PL_FLAG_NO_EVICT
+};
+
+struct ttm_placement vmw_vram_gmr_ne_placement = {
+ .fpfn = 0,
+ .lpfn = 0,
+ .num_placement = 2,
+ .placement = vram_gmr_ne_placement_flags,
+ .num_busy_placement = 1,
+ .busy_placement = &gmr_ne_placement_flags
+};
+
struct ttm_placement vmw_vram_sys_placement = {
.fpfn = 0,
.lpfn = 0,
.busy_placement = &sys_placement_flags
};
+static uint32_t evictable_placement_flags[] = {
+ TTM_PL_FLAG_SYSTEM | TTM_PL_FLAG_CACHED,
+ TTM_PL_FLAG_VRAM | TTM_PL_FLAG_CACHED,
+ VMW_PL_FLAG_GMR | TTM_PL_FLAG_CACHED
+};
+
+struct ttm_placement vmw_evictable_placement = {
+ .fpfn = 0,
+ .lpfn = 0,
+ .num_placement = 3,
+ .placement = evictable_placement_flags,
+ .num_busy_placement = 1,
+ .busy_placement = &sys_placement_flags
+};
+
struct vmw_ttm_backend {
struct ttm_backend backend;
struct page **pages;
--- /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 "ttm/ttm_placement.h"
+
+#include "drmP.h"
+#include "vmwgfx_drv.h"
+
+
+/**
+ * Validate a buffer to placement.
+ *
+ * May only be called by the current master as this function takes the
+ * its lock in write mode.
+ *
+ * Returns
+ * -ERESTARTSYS if interrupted by a signal.
+ */
+int vmw_dmabuf_to_placement(struct vmw_private *dev_priv,
+ struct vmw_dma_buffer *buf,
+ struct ttm_placement *placement,
+ bool interruptible)
+{
+ struct vmw_master *vmaster = dev_priv->active_master;
+ struct ttm_buffer_object *bo = &buf->base;
+ int ret;
+
+ ret = ttm_write_lock(&vmaster->lock, interruptible);
+ if (unlikely(ret != 0))
+ return ret;
+
+ ret = ttm_bo_reserve(bo, interruptible, false, false, 0);
+ if (unlikely(ret != 0))
+ goto err;
+
+ ret = ttm_bo_validate(bo, placement, interruptible, false, false);
+
+ ttm_bo_unreserve(bo);
+
+err:
+ ttm_write_unlock(&vmaster->lock);
+ return ret;
+}
+
+/**
+ * Move a buffer to vram or gmr.
+ *
+ * May only be called by the current master as this function takes the
+ * its lock in write mode.
+ *
+ * @dev_priv: Driver private.
+ * @buf: DMA buffer to move.
+ * @pin: Pin buffer if true.
+ * @interruptible: Use interruptible wait.
+ *
+ * Returns
+ * -ERESTARTSYS if interrupted by a signal.
+ */
+int vmw_dmabuf_to_vram_or_gmr(struct vmw_private *dev_priv,
+ struct vmw_dma_buffer *buf,
+ bool pin, bool interruptible)
+{
+ struct vmw_master *vmaster = dev_priv->active_master;
+ struct ttm_buffer_object *bo = &buf->base;
+ struct ttm_placement *placement;
+ int ret;
+
+ ret = ttm_write_lock(&vmaster->lock, interruptible);
+ if (unlikely(ret != 0))
+ return ret;
+
+ ret = ttm_bo_reserve(bo, interruptible, false, false, 0);
+ if (unlikely(ret != 0))
+ goto err;
+
+ /**
+ * Put BO in VRAM if there is space, otherwise as a GMR.
+ * If there is no space in VRAM and GMR ids are all used up,
+ * start evicting GMRs to make room. If the DMA buffer can't be
+ * used as a GMR, this will return -ENOMEM.
+ */
+
+ if (pin)
+ placement = &vmw_vram_gmr_ne_placement;
+ else
+ placement = &vmw_vram_gmr_placement;
+
+ ret = ttm_bo_validate(bo, placement, interruptible, false, false);
+ if (likely(ret == 0) || ret == -ERESTARTSYS)
+ goto err_unreserve;
+
+
+ /**
+ * If that failed, try VRAM again, this time evicting
+ * previous contents.
+ */
+
+ if (pin)
+ placement = &vmw_vram_ne_placement;
+ else
+ placement = &vmw_vram_placement;
+
+ ret = ttm_bo_validate(bo, placement, interruptible, false, false);
+
+err_unreserve:
+ ttm_bo_unreserve(bo);
+err:
+ ttm_write_unlock(&vmaster->lock);
+ return ret;
+}
+
+/**
+ * Move a buffer to vram.
+ *
+ * May only be called by the current master as this function takes the
+ * its lock in write mode.
+ *
+ * @dev_priv: Driver private.
+ * @buf: DMA buffer to move.
+ * @pin: Pin buffer in vram if true.
+ * @interruptible: Use interruptible wait.
+ *
+ * Returns
+ * -ERESTARTSYS if interrupted by a signal.
+ */
+int vmw_dmabuf_to_vram(struct vmw_private *dev_priv,
+ struct vmw_dma_buffer *buf,
+ bool pin, bool interruptible)
+{
+ struct ttm_placement *placement;
+
+ if (pin)
+ placement = &vmw_vram_ne_placement;
+ else
+ placement = &vmw_vram_placement;
+
+ return vmw_dmabuf_to_placement(dev_priv, buf,
+ placement,
+ interruptible);
+}
+
+/**
+ * Move a buffer to start of vram.
+ *
+ * May only be called by the current master as this function takes the
+ * its lock in write mode.
+ *
+ * @dev_priv: Driver private.
+ * @buf: DMA buffer to move.
+ * @pin: Pin buffer in vram if true.
+ * @interruptible: Use interruptible wait.
+ *
+ * Returns
+ * -ERESTARTSYS if interrupted by a signal.
+ */
+int vmw_dmabuf_to_start_of_vram(struct vmw_private *dev_priv,
+ struct vmw_dma_buffer *buf,
+ bool pin, bool interruptible)
+{
+ struct vmw_master *vmaster = dev_priv->active_master;
+ struct ttm_buffer_object *bo = &buf->base;
+ struct ttm_placement placement;
+ int ret = 0;
+
+ if (pin)
+ placement = vmw_vram_ne_placement;
+ else
+ placement = vmw_vram_placement;
+ placement.lpfn = bo->num_pages;
+
+ ret = ttm_write_lock(&vmaster->lock, interruptible);
+ if (unlikely(ret != 0))
+ return ret;
+
+ ret = ttm_bo_reserve(bo, interruptible, false, false, 0);
+ if (unlikely(ret != 0))
+ goto err_unlock;
+
+ /* Is this buffer already in vram but not at the start of it? */
+ if (bo->mem.mem_type == TTM_PL_VRAM &&
+ bo->mem.start < bo->num_pages &&
+ bo->mem.start > 0)
+ (void) ttm_bo_validate(bo, &vmw_sys_placement, false,
+ false, false);
+
+ ret = ttm_bo_validate(bo, &placement, interruptible, false, false);
+
+ /* For some reason we didn't up at the start of vram */
+ WARN_ON(ret == 0 && bo->offset != 0);
+
+ ttm_bo_unreserve(bo);
+err_unlock:
+ ttm_write_unlock(&vmaster->lock);
+
+ return ret;
+}
+
+/**
+ * Unpin the buffer given buffer, does not move the buffer.
+ *
+ * May only be called by the current master as this function takes the
+ * its lock in write mode.
+ *
+ * @dev_priv: Driver private.
+ * @buf: DMA buffer to unpin.
+ * @interruptible: Use interruptible wait.
+ *
+ * Returns
+ * -ERESTARTSYS if interrupted by a signal.
+ */
+int vmw_dmabuf_unpin(struct vmw_private *dev_priv,
+ struct vmw_dma_buffer *buf,
+ bool interruptible)
+{
+ /*
+ * We could in theory early out if the buffer is
+ * unpinned but we need to lock and reserve the buffer
+ * anyways so we don't gain much by that.
+ */
+ return vmw_dmabuf_to_placement(dev_priv, buf,
+ &vmw_evictable_placement,
+ interruptible);
+}
+
+/**
+ * Move a buffer to system memory, does not pin the buffer.
+ *
+ * May only be called by the current master as this function takes the
+ * its lock in write mode.
+ *
+ * @dev_priv: Driver private.
+ * @buf: DMA buffer to move.
+ * @interruptible: Use interruptible wait.
+ *
+ * Returns
+ * -ERESTARTSYS if interrupted by a signal.
+ */
+int vmw_dmabuf_to_system(struct vmw_private *dev_priv,
+ struct vmw_dma_buffer *buf,
+ bool interruptible)
+{
+ return vmw_dmabuf_to_placement(dev_priv, buf,
+ &vmw_sys_placement,
+ interruptible);
+}
+
+void vmw_dmabuf_get_id_offset(struct vmw_dma_buffer *buf,
+ uint32_t *gmrId, uint32_t *offset)
+{
+ if (buf->base.mem.mem_type == TTM_PL_VRAM) {
+ *gmrId = SVGA_GMR_FRAMEBUFFER;
+ *offset = buf->base.offset;
+ } else {
+ *gmrId = buf->base.mem.start;
+ *offset = 0;
+ }
+}
+
+void vmw_dmabuf_get_guest_ptr(struct vmw_dma_buffer *buf, SVGAGuestPtr *ptr)
+{
+ if (buf->base.mem.mem_type == TTM_PL_VRAM) {
+ ptr->gmrId = SVGA_GMR_FRAMEBUFFER;
+ ptr->offset = buf->base.offset;
+ } else {
+ ptr->gmrId = buf->base.mem.start;
+ ptr->offset = 0;
+ }
+}
extern void vmw_dmabuf_validate_clear(struct ttm_buffer_object *bo);
extern int vmw_user_dmabuf_lookup(struct ttm_object_file *tfile,
uint32_t id, struct vmw_dma_buffer **out);
-extern int vmw_dmabuf_to_start_of_vram(struct vmw_private *vmw_priv,
- struct vmw_dma_buffer *bo);
-extern int vmw_dmabuf_from_vram(struct vmw_private *vmw_priv,
- struct vmw_dma_buffer *bo);
extern int vmw_stream_claim_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv);
extern int vmw_stream_unref_ioctl(struct drm_device *dev, void *data,
uint32_t *inout_id,
struct vmw_resource **out);
+/**
+ * DMA buffer helper routines - vmwgfx_dmabuf.c
+ */
+extern int vmw_dmabuf_to_placement(struct vmw_private *vmw_priv,
+ struct vmw_dma_buffer *bo,
+ struct ttm_placement *placement,
+ bool interruptible);
+extern int vmw_dmabuf_to_vram(struct vmw_private *dev_priv,
+ struct vmw_dma_buffer *buf,
+ bool pin, bool interruptible);
+extern int vmw_dmabuf_to_vram_or_gmr(struct vmw_private *dev_priv,
+ struct vmw_dma_buffer *buf,
+ bool pin, bool interruptible);
+extern int vmw_dmabuf_to_start_of_vram(struct vmw_private *vmw_priv,
+ struct vmw_dma_buffer *bo,
+ bool pin, bool interruptible);
+extern int vmw_dmabuf_unpin(struct vmw_private *vmw_priv,
+ struct vmw_dma_buffer *bo,
+ bool interruptible);
+extern int vmw_dmabuf_to_system(struct vmw_private *vmw_priv,
+ struct vmw_dma_buffer *bo,
+ bool interruptible);
+extern void vmw_dmabuf_get_id_offset(struct vmw_dma_buffer *buf,
+ uint32_t *gmrId, uint32_t *offset);
+extern void vmw_dmabuf_get_guest_ptr(struct vmw_dma_buffer *buf,
+ SVGAGuestPtr *ptr);
/**
* Misc Ioctl functionality - vmwgfx_ioctl.c
extern struct ttm_placement vmw_vram_ne_placement;
extern struct ttm_placement vmw_vram_sys_placement;
extern struct ttm_placement vmw_vram_gmr_placement;
+extern struct ttm_placement vmw_vram_gmr_ne_placement;
extern struct ttm_placement vmw_sys_placement;
+extern struct ttm_placement vmw_evictable_placement;
extern struct ttm_bo_driver vmw_bo_driver;
extern int vmw_dma_quiescent(struct drm_device *dev);
return 0;
}
-int vmw_dmabuf_from_vram(struct vmw_private *vmw_priv,
- struct vmw_dma_buffer *vmw_bo)
-{
- struct ttm_buffer_object *bo = &vmw_bo->base;
- int ret = 0;
-
- ret = ttm_bo_reserve(bo, false, false, false, 0);
- if (unlikely(ret != 0))
- return ret;
-
- ret = ttm_bo_validate(bo, &vmw_sys_placement, false, false, false);
- ttm_bo_unreserve(bo);
-
- return ret;
-}
-
-int vmw_dmabuf_to_start_of_vram(struct vmw_private *vmw_priv,
- struct vmw_dma_buffer *vmw_bo)
-{
- struct ttm_buffer_object *bo = &vmw_bo->base;
- struct ttm_placement ne_placement = vmw_vram_ne_placement;
- int ret = 0;
-
- ne_placement.lpfn = bo->num_pages;
-
- /* interuptable? */
- ret = ttm_write_lock(&vmw_priv->active_master->lock, false);
- if (unlikely(ret != 0))
- return ret;
-
- ret = ttm_bo_reserve(bo, false, false, false, 0);
- if (unlikely(ret != 0))
- goto err_unlock;
-
- if (bo->mem.mem_type == TTM_PL_VRAM &&
- bo->mem.start < bo->num_pages &&
- bo->mem.start > 0)
- (void) ttm_bo_validate(bo, &vmw_sys_placement, false,
- false, false);
-
- ret = ttm_bo_validate(bo, &ne_placement, false, false, false);
-
- /* Could probably bug on */
- WARN_ON(bo->offset != 0);
-
- ttm_bo_unreserve(bo);
-err_unlock:
- ttm_write_unlock(&vmw_priv->active_master->lock);
-
- return ret;
-}
-
int vmw_fb_off(struct vmw_private *vmw_priv)
{
struct fb_info *info;
par->bo_ptr = NULL;
ttm_bo_kunmap(&par->map);
- vmw_dmabuf_from_vram(vmw_priv, par->vmw_bo);
+ /* move this to system instead of just unpinning it */
+ vmw_dmabuf_to_system(vmw_priv, par->vmw_bo, false);
return 0;
}
/* Make sure that all overlays are stoped when we take over */
vmw_overlay_stop_all(vmw_priv);
- ret = vmw_dmabuf_to_start_of_vram(vmw_priv, par->vmw_bo);
+ ret = vmw_dmabuf_to_start_of_vram(vmw_priv, par->vmw_bo, true, false);
if (unlikely(ret != 0)) {
DRM_ERROR("could not move buffer to start of VRAM\n");
goto err_no_buffer;
vmw_overlay_pause_all(dev_priv);
- ret = vmw_dmabuf_to_start_of_vram(dev_priv, vfbd->buffer);
+ ret = vmw_dmabuf_to_start_of_vram(dev_priv, vfbd->buffer, true, false);
vmw_overlay_resume_all(dev_priv);
return 0;
}
- return vmw_dmabuf_from_vram(dev_priv, vfbd->buffer);
+ return vmw_dmabuf_unpin(dev_priv, vfbd->buffer, false);
}
static int vmw_kms_new_framebuffer_dmabuf(struct vmw_private *dev_priv,
cmd->flush.streamId = stream_id;
}
-/**
- * Pin or unpin a buffer in vram.
- *
- * @dev_priv: Driver private.
- * @buf: DMA buffer to pin or unpin.
- * @pin: Pin buffer in vram if true.
- * @interruptible: Use interruptible wait.
- *
- * Takes the current masters ttm lock in read.
- *
- * Returns
- * -ERESTARTSYS if interrupted by a signal.
- */
-static int vmw_dmabuf_pin_in_vram(struct vmw_private *dev_priv,
- struct vmw_dma_buffer *buf,
- bool pin, bool interruptible)
-{
- struct ttm_buffer_object *bo = &buf->base;
- struct ttm_placement *overlay_placement = &vmw_vram_placement;
- int ret;
-
- ret = ttm_read_lock(&dev_priv->active_master->lock, interruptible);
- if (unlikely(ret != 0))
- return ret;
-
- ret = ttm_bo_reserve(bo, interruptible, false, false, 0);
- if (unlikely(ret != 0))
- goto err;
-
- if (pin)
- overlay_placement = &vmw_vram_ne_placement;
-
- ret = ttm_bo_validate(bo, overlay_placement, interruptible, false, false);
-
- ttm_bo_unreserve(bo);
-
-err:
- ttm_read_unlock(&dev_priv->active_master->lock);
-
- return ret;
-}
-
/**
* Send put command to hw.
*
return 0;
}
+/**
+ * Move a buffer to vram, and pin it if @pin.
+ *
+ * XXX: This function is here to be changed at a later date.
+ */
+static int vmw_overlay_move_buffer(struct vmw_private *dev_priv,
+ struct vmw_dma_buffer *buf,
+ bool pin, bool inter)
+{
+ if (pin)
+ return vmw_dmabuf_to_vram(dev_priv, buf, true, inter);
+ else
+ return vmw_dmabuf_unpin(dev_priv, buf, inter);
+}
+
/**
* Stop or pause a stream.
*
return ret;
/* We just remove the NO_EVICT flag so no -ENOMEM */
- ret = vmw_dmabuf_pin_in_vram(dev_priv, stream->buf, false,
- interruptible);
+ ret = vmw_overlay_move_buffer(dev_priv, stream->buf, false,
+ interruptible);
if (interruptible && ret == -ERESTARTSYS)
return ret;
else
/* We don't start the old stream if we are interrupted.
* Might return -ENOMEM if it can't fit the buffer in vram.
*/
- ret = vmw_dmabuf_pin_in_vram(dev_priv, buf, true, interruptible);
+ ret = vmw_overlay_move_buffer(dev_priv, buf, true, interruptible);
if (ret)
return ret;
/* This one needs to happen no matter what. We only remove
* the NO_EVICT flag so this is safe from -ENOMEM.
*/
- BUG_ON(vmw_dmabuf_pin_in_vram(dev_priv, buf, false, false) != 0);
+ BUG_ON(vmw_overlay_move_buffer(dev_priv, buf, false, false)
+ != 0);
return ret;
}
projects / linux-beck.git / commitdiff