Mesa (master): svga: update buffer code for GBS
Brian Paul
brianp at kemper.freedesktop.org
Fri Feb 14 17:58:21 UTC 2014
Module: Mesa
Branch: master
Commit: 72b0e959fc38cf4f01d8aaeabe7336cc88588f90
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=72b0e959fc38cf4f01d8aaeabe7336cc88588f90
Author: Brian Paul <brianp at vmware.com>
Date: Sat Feb 8 09:51:15 2014 -0800
svga: update buffer code for GBS
Reviewed-by: Thomas Hellstrom <thellstrom at vmware.com>
Cc: "10.1" <mesa-stable at lists.freedesktop.org>
---
src/gallium/drivers/svga/svga_resource_buffer.c | 32 ++-
.../drivers/svga/svga_resource_buffer_upload.c | 234 +++++++++++++++++---
2 files changed, 224 insertions(+), 42 deletions(-)
diff --git a/src/gallium/drivers/svga/svga_resource_buffer.c b/src/gallium/drivers/svga/svga_resource_buffer.c
index 8ba2252..d2c7762 100644
--- a/src/gallium/drivers/svga/svga_resource_buffer.c
+++ b/src/gallium/drivers/svga/svga_resource_buffer.c
@@ -103,9 +103,13 @@ svga_buffer_transfer_map(struct pipe_context *pipe,
/*
* Instead of flushing the context command buffer, simply discard
* the current hwbuf, and start a new one.
+ * With GB objects, the map operation takes care of this
+ * if passed the PIPE_TRANSFER_DISCARD_WHOLE_RESOURCE flag,
+ * and the old backing store is busy.
*/
- svga_buffer_destroy_hw_storage(ss, sbuf);
+ if (!svga_have_gb_objects(svga))
+ svga_buffer_destroy_hw_storage(ss, sbuf);
}
sbuf->map.num_ranges = 0;
@@ -132,7 +136,7 @@ svga_buffer_transfer_map(struct pipe_context *pipe,
if (sbuf->dma.pending) {
svga_buffer_upload_flush(svga, sbuf);
- if (sbuf->hwbuf) {
+ if (svga_buffer_has_hw_storage(sbuf)) {
/*
* We have a pending DMA upload from a hardware buffer, therefore
* we need to ensure that the host finishes processing that DMA
@@ -168,7 +172,7 @@ svga_buffer_transfer_map(struct pipe_context *pipe,
}
}
- if (!sbuf->swbuf && !sbuf->hwbuf) {
+ if (!sbuf->swbuf && !svga_buffer_has_hw_storage(sbuf)) {
if (svga_buffer_create_hw_storage(ss, sbuf) != PIPE_OK) {
/*
* We can't create a hardware buffer big enough, so create a malloc
@@ -193,11 +197,19 @@ svga_buffer_transfer_map(struct pipe_context *pipe,
/* User/malloc buffer */
map = sbuf->swbuf;
}
- else if (sbuf->hwbuf) {
- struct svga_screen *ss = svga_screen(pipe->screen);
- struct svga_winsys_screen *sws = ss->sws;
+ else if (svga_buffer_has_hw_storage(sbuf)) {
+ boolean retry;
- map = sws->buffer_map(sws, sbuf->hwbuf, transfer->usage);
+ map = svga_buffer_hw_storage_map(svga, sbuf, transfer->usage, &retry);
+ if (map == NULL && retry) {
+ /*
+ * At this point, svga_buffer_get_transfer() has already
+ * hit the DISCARD_WHOLE_RESOURCE path and flushed HWTNL
+ * for this buffer.
+ */
+ svga_context_flush(svga, NULL);
+ map = svga_buffer_hw_storage_map(svga, sbuf, transfer->usage, &retry);
+ }
}
else {
map = NULL;
@@ -240,7 +252,7 @@ svga_buffer_transfer_unmap( struct pipe_context *pipe,
struct pipe_transfer *transfer )
{
struct svga_screen *ss = svga_screen(pipe->screen);
- struct svga_winsys_screen *sws = ss->sws;
+ struct svga_context *svga = svga_context(pipe);
struct svga_buffer *sbuf = svga_buffer(transfer->resource);
pipe_mutex_lock(ss->swc_mutex);
@@ -250,8 +262,8 @@ svga_buffer_transfer_unmap( struct pipe_context *pipe,
--sbuf->map.count;
}
- if (sbuf->hwbuf) {
- sws->buffer_unmap(sws, sbuf->hwbuf);
+ if (svga_buffer_has_hw_storage(sbuf)) {
+ svga_buffer_hw_storage_unmap(svga, sbuf);
}
if (transfer->usage & PIPE_TRANSFER_WRITE) {
diff --git a/src/gallium/drivers/svga/svga_resource_buffer_upload.c b/src/gallium/drivers/svga/svga_resource_buffer_upload.c
index af39973..3fc14f8 100644
--- a/src/gallium/drivers/svga/svga_resource_buffer_upload.c
+++ b/src/gallium/drivers/svga/svga_resource_buffer_upload.c
@@ -30,6 +30,7 @@
#include "util/u_inlines.h"
#include "util/u_math.h"
#include "util/u_memory.h"
+#include "util/u_double_list.h"
#include "svga_cmd.h"
#include "svga_context.h"
@@ -39,6 +40,20 @@
#include "svga_screen.h"
#include "svga_winsys.h"
+/**
+ * Describes a complete SVGA_3D_CMD_UPDATE_GB_IMAGE command
+ *
+ */
+struct svga_3d_update_gb_image {
+ SVGA3dCmdHeader header;
+ SVGA3dCmdUpdateGBImage body;
+};
+
+struct svga_3d_invalidate_gb_image {
+ SVGA3dCmdHeader header;
+ SVGA3dCmdInvalidateGBImage body;
+};
+
/**
* Allocate a winsys_buffer (ie. DMA, aka GMR memory).
@@ -72,6 +87,11 @@ svga_winsys_buffer_create( struct svga_context *svga,
}
+/**
+ * Destroy HW storage if separate from the host surface.
+ * In the GB case, the HW storage is associated with the host surface
+ * and is therefore a No-op.
+ */
void
svga_buffer_destroy_hw_storage(struct svga_screen *ss, struct svga_buffer *sbuf)
{
@@ -88,7 +108,7 @@ svga_buffer_destroy_hw_storage(struct svga_screen *ss, struct svga_buffer *sbuf)
/**
- * Allocate DMA'ble storage for the buffer.
+ * Allocate DMA'ble or Updatable storage for the buffer.
*
* Called before mapping a buffer.
*/
@@ -98,6 +118,10 @@ svga_buffer_create_hw_storage(struct svga_screen *ss,
{
assert(!sbuf->user);
+ if (ss->sws->have_gb_objects) {
+ assert(sbuf->handle || !sbuf->dma.pending);
+ return svga_buffer_create_host_surface(ss, sbuf);
+ }
if (!sbuf->hwbuf) {
struct svga_winsys_screen *sws = ss->sws;
unsigned alignment = 16;
@@ -170,6 +194,104 @@ svga_buffer_destroy_host_surface(struct svga_screen *ss,
/**
+ * Insert a number of preliminary UPDATE_GB_IMAGE commands in the
+ * command buffer, equal to the current number of mapped ranges.
+ * The UPDATE_GB_IMAGE commands will be patched with the
+ * actual ranges just before flush.
+ */
+static enum pipe_error
+svga_buffer_upload_gb_command(struct svga_context *svga,
+ struct svga_buffer *sbuf)
+{
+ struct svga_winsys_context *swc = svga->swc;
+ SVGA3dCmdUpdateGBImage *cmd;
+ struct svga_3d_update_gb_image *ccmd = NULL;
+ uint32 numBoxes = sbuf->map.num_ranges;
+ struct pipe_resource *dummy;
+ unsigned int i;
+
+ assert(numBoxes);
+ assert(sbuf->dma.updates == NULL);
+
+ if (sbuf->dma.flags.discard) {
+ struct svga_3d_invalidate_gb_image *cicmd = NULL;
+ SVGA3dCmdInvalidateGBImage *icmd;
+
+ /* Allocate FIFO space for one INVALIDATE_GB_IMAGE command followed by
+ * 'numBoxes' UPDATE_GB_IMAGE commands. Allocate all at once rather
+ * than with separate commands because we need to properly deal with
+ * filling the command buffer.
+ */
+ icmd = SVGA3D_FIFOReserve(swc,
+ SVGA_3D_CMD_INVALIDATE_GB_IMAGE,
+ sizeof *icmd + numBoxes * sizeof *ccmd,
+ 2);
+ if (!icmd)
+ return PIPE_ERROR_OUT_OF_MEMORY;
+
+ cicmd = container_of(icmd, cicmd, body);
+ cicmd->header.size = sizeof *icmd;
+ swc->surface_relocation(swc, &icmd->image.sid, NULL, sbuf->handle,
+ (SVGA_RELOC_WRITE |
+ SVGA_RELOC_INTERNAL |
+ SVGA_RELOC_DMA));
+ icmd->image.face = 0;
+ icmd->image.mipmap = 0;
+
+ /* initialize the first UPDATE_GB_IMAGE command */
+ ccmd = (struct svga_3d_update_gb_image *) &icmd[1];
+ ccmd->header.id = SVGA_3D_CMD_UPDATE_GB_IMAGE;
+ cmd = &ccmd->body;
+
+ } else {
+ /* Allocate FIFO space for 'numBoxes' UPDATE_GB_IMAGE commands */
+ cmd = SVGA3D_FIFOReserve(swc,
+ SVGA_3D_CMD_UPDATE_GB_IMAGE,
+ sizeof *cmd + (numBoxes - 1) * sizeof *ccmd,
+ 1);
+ if (!cmd)
+ return PIPE_ERROR_OUT_OF_MEMORY;
+
+ ccmd = container_of(cmd, ccmd, body);
+ }
+
+ /* Init the first UPDATE_GB_IMAGE command */
+ ccmd->header.size = sizeof *cmd;
+ swc->surface_relocation(swc, &cmd->image.sid, NULL, sbuf->handle,
+ SVGA_RELOC_WRITE | SVGA_RELOC_INTERNAL);
+ cmd->image.face = 0;
+ cmd->image.mipmap = 0;
+
+ /* Save pointer to the first UPDATE_GB_IMAGE command so that we can
+ * fill in the box info below.
+ */
+ sbuf->dma.updates = ccmd;
+
+ /*
+ * Copy the relocation info, face and mipmap to all
+ * subsequent commands. NOTE: For winsyses that actually
+ * patch the image.sid member at flush time, this will fail
+ * miserably. For those we need to add as many relocations
+ * as there are copy boxes.
+ */
+
+ for (i = 1; i < numBoxes; ++i) {
+ memcpy(++ccmd, sbuf->dma.updates, sizeof *ccmd);
+ }
+
+ /* Increment reference count */
+ sbuf->dma.svga = svga;
+ dummy = NULL;
+ pipe_resource_reference(&dummy, &sbuf->b.b);
+ SVGA_FIFOCommitAll(swc);
+
+ sbuf->dma.flags.discard = FALSE;
+
+ return PIPE_OK;
+}
+
+
+/**
* Variant of SVGA3D_BufferDMA which leaves the copy box temporarily in blank.
*/
static enum pipe_error
@@ -188,6 +310,9 @@ svga_buffer_upload_command(struct svga_context *svga,
unsigned surface_flags;
struct pipe_resource *dummy;
+ if (svga_have_gb_objects(svga))
+ return svga_buffer_upload_gb_command(svga, sbuf);
+
if (transfer == SVGA3D_WRITE_HOST_VRAM) {
region_flags = SVGA_RELOC_READ;
surface_flags = SVGA_RELOC_WRITE;
@@ -245,55 +370,86 @@ svga_buffer_upload_command(struct svga_context *svga,
*/
void
svga_buffer_upload_flush(struct svga_context *svga,
- struct svga_buffer *sbuf)
+ struct svga_buffer *sbuf)
{
- SVGA3dCopyBox *boxes;
unsigned i;
struct pipe_resource *dummy;
if (!sbuf->dma.pending) {
+ //debug_printf("no dma pending on buffer\n");
return;
}
assert(sbuf->handle);
- assert(sbuf->hwbuf);
assert(sbuf->map.num_ranges);
assert(sbuf->dma.svga == svga);
- assert(sbuf->dma.boxes);
/*
- * Patch the DMA command with the final copy box.
+ * Patch the DMA/update command with the final copy box.
*/
+ if (svga_have_gb_objects(svga)) {
+ struct svga_3d_update_gb_image *update = sbuf->dma.updates;
+ assert(update);
- SVGA_DBG(DEBUG_DMA, "dma to sid %p\n", sbuf->handle);
+ for (i = 0; i < sbuf->map.num_ranges; ++i, ++update) {
+ SVGA3dBox *box = &update->body.box;
- boxes = sbuf->dma.boxes;
- for (i = 0; i < sbuf->map.num_ranges; ++i) {
- SVGA_DBG(DEBUG_DMA, " bytes %u - %u\n",
+ SVGA_DBG(DEBUG_DMA, " bytes %u - %u\n",
+ sbuf->map.ranges[i].start, sbuf->map.ranges[i].end);
+
+ box->x = sbuf->map.ranges[i].start;
+ box->y = 0;
+ box->z = 0;
+ box->w = sbuf->map.ranges[i].end - sbuf->map.ranges[i].start;
+ box->h = 1;
+ box->d = 1;
+
+ assert(box->x <= sbuf->b.b.width0);
+ assert(box->x + box->w <= sbuf->b.b.width0);
+ }
+ }
+ else {
+ assert(sbuf->hwbuf);
+ assert(sbuf->dma.boxes);
+ SVGA_DBG(DEBUG_DMA, "dma to sid %p\n", sbuf->handle);
+
+ for (i = 0; i < sbuf->map.num_ranges; ++i) {
+ SVGA3dCopyBox *box = sbuf->dma.boxes + i;
+
+ SVGA_DBG(DEBUG_DMA, " bytes %u - %u\n",
sbuf->map.ranges[i].start, sbuf->map.ranges[i].end);
- boxes[i].x = sbuf->map.ranges[i].start;
- boxes[i].y = 0;
- boxes[i].z = 0;
- boxes[i].w = sbuf->map.ranges[i].end - sbuf->map.ranges[i].start;
- boxes[i].h = 1;
- boxes[i].d = 1;
- boxes[i].srcx = sbuf->map.ranges[i].start;
- boxes[i].srcy = 0;
- boxes[i].srcz = 0;
+ box->x = sbuf->map.ranges[i].start;
+ box->y = 0;
+ box->z = 0;
+ box->w = sbuf->map.ranges[i].end - sbuf->map.ranges[i].start;
+ box->h = 1;
+ box->d = 1;
+ box->srcx = sbuf->map.ranges[i].start;
+ box->srcy = 0;
+ box->srcz = 0;
+
+ assert(box->x <= sbuf->b.b.width0);
+ assert(box->x + box->w <= sbuf->b.b.width0);
+ }
}
+ /* Reset sbuf for next use/upload */
+
sbuf->map.num_ranges = 0;
assert(sbuf->head.prev && sbuf->head.next);
- LIST_DEL(&sbuf->head);
-
+ LIST_DEL(&sbuf->head); /* remove from svga->dirty_buffers list */
+#ifdef DEBUG
+ sbuf->head.next = sbuf->head.prev = NULL;
+#endif
sbuf->dma.pending = FALSE;
sbuf->dma.flags.discard = FALSE;
sbuf->dma.flags.unsynchronized = FALSE;
sbuf->dma.svga = NULL;
sbuf->dma.boxes = NULL;
+ sbuf->dma.updates = NULL;
/* Decrement reference count (and potentially destroy) */
dummy = &sbuf->b.b;
@@ -409,24 +565,28 @@ svga_buffer_add_range(struct svga_buffer *sbuf,
* Copy the contents of the malloc buffer to a hardware buffer.
*/
static enum pipe_error
-svga_buffer_update_hw(struct svga_screen *ss, struct svga_buffer *sbuf)
+svga_buffer_update_hw(struct svga_context *svga, struct svga_buffer *sbuf)
{
assert(!sbuf->user);
- if (!sbuf->hwbuf) {
+ if (!svga_buffer_has_hw_storage(sbuf)) {
+ struct svga_screen *ss = svga_screen(sbuf->b.b.screen);
enum pipe_error ret;
+ boolean retry;
void *map;
assert(sbuf->swbuf);
if (!sbuf->swbuf)
return PIPE_ERROR;
- ret = svga_buffer_create_hw_storage(ss, sbuf);
+ ret = svga_buffer_create_hw_storage(svga_screen(sbuf->b.b.screen),
+ sbuf);
if (ret != PIPE_OK)
return ret;
pipe_mutex_lock(ss->swc_mutex);
- map = ss->sws->buffer_map(ss->sws, sbuf->hwbuf, PIPE_TRANSFER_WRITE);
+ map = svga_buffer_hw_storage_map(svga, sbuf, PIPE_TRANSFER_WRITE, &retry);
assert(map);
+ assert(!retry);
if (!map) {
pipe_mutex_unlock(ss->swc_mutex);
svga_buffer_destroy_hw_storage(ss, sbuf);
@@ -434,7 +594,7 @@ svga_buffer_update_hw(struct svga_screen *ss, struct svga_buffer *sbuf)
}
memcpy(map, sbuf->swbuf, sbuf->b.b.width0);
- ss->sws->buffer_unmap(ss->sws, sbuf->hwbuf);
+ svga_buffer_hw_storage_unmap(svga, sbuf);
/* This user/malloc buffer is now indistinguishable from a gpu buffer */
assert(!sbuf->map.count);
@@ -457,6 +617,9 @@ svga_buffer_update_hw(struct svga_screen *ss, struct svga_buffer *sbuf)
* Upload the buffer to the host in a piecewise fashion.
*
* Used when the buffer is too big to fit in the GMR aperture.
+ * This function should never get called in the guest-backed case
+ * since we always have a full-sized hardware storage backing the
+ * host surface.
*/
static enum pipe_error
svga_buffer_upload_piecewise(struct svga_screen *ss,
@@ -470,6 +633,7 @@ svga_buffer_upload_piecewise(struct svga_screen *ss,
assert(sbuf->map.num_ranges);
assert(!sbuf->dma.pending);
+ assert(!svga_have_gb_objects(svga));
SVGA_DBG(DEBUG_DMA, "dma to sid %p\n", sbuf->handle);
@@ -533,10 +697,12 @@ svga_buffer_upload_piecewise(struct svga_screen *ss,
}
-
-
-/* Get (or create/upload) the winsys surface handle so that we can
+/**
+ * Get (or create/upload) the winsys surface handle so that we can
* refer to this buffer in fifo commands.
+ * This function will create the host surface, and in the GB case also the
+ * hardware storage. In the non-GB case, the hardware storage will be created
+ * if there are mapped ranges and the data is currently in a malloc'ed buffer.
*/
struct svga_winsys_surface *
svga_buffer_handle(struct svga_context *svga,
@@ -552,11 +718,15 @@ svga_buffer_handle(struct svga_context *svga,
sbuf = svga_buffer(buf);
- assert(!sbuf->map.count);
assert(!sbuf->user);
if (!sbuf->handle) {
- ret = svga_buffer_create_host_surface(ss, sbuf);
+ /* This call will set sbuf->handle */
+ if (svga_have_gb_objects(svga)) {
+ ret = svga_buffer_update_hw(svga, sbuf);
+ } else {
+ ret = svga_buffer_create_host_surface(ss, sbuf);
+ }
if (ret != PIPE_OK)
return NULL;
}
@@ -572,7 +742,7 @@ svga_buffer_handle(struct svga_context *svga,
/*
* Migrate the data from swbuf -> hwbuf if necessary.
*/
- ret = svga_buffer_update_hw(ss, sbuf);
+ ret = svga_buffer_update_hw(svga, sbuf);
if (ret == PIPE_OK) {
/*
* Queue a dma command.
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