xenocara/driver/xf86-video-vmware/vmwgfx/vmwgfx_drmi.c

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/*
* Copyright 2011 VMWare, Inc.
* 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 TUNGSTEN GRAPHICS 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.
*
* Author: Jakob Bornecrantz <wallbraker@gmail.com>
* Author: Thomas Hellstrom <thellstrom@vmware.com>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdint.h>
#include <errno.h>
#include <sys/mman.h>
#include "vmwgfx_drm.h"
#include <xf86drm.h>
#include "vmwgfx_drmi.h"
#define uint32 uint32_t
#define int32 int32_t
#define uint16 uint16_t
#define uint8 uint8_t
#include "svga3d_reg.h"
#include "vmwgfx_driver.h"
static int
vmwgfx_fence_wait(int drm_fd, uint32_t handle, Bool unref)
{
struct drm_vmw_fence_wait_arg farg;
memset(&farg, 0, sizeof(farg));
farg.handle = handle;
farg.flags = DRM_VMW_FENCE_FLAG_EXEC;
farg.timeout_us = 10*1000000;
farg.cookie_valid = 0;
if (unref)
farg.wait_options |= DRM_VMW_WAIT_OPTION_UNREF;
return drmCommandWriteRead(drm_fd, DRM_VMW_FENCE_WAIT, &farg,
sizeof(farg));
}
static void
vmwgfx_fence_unref(int drm_fd, uint32_t handle)
{
struct drm_vmw_fence_arg farg;
memset(&farg, 0, sizeof(farg));
farg.handle = handle;
(void) drmCommandWrite(drm_fd, DRM_VMW_FENCE_UNREF, &farg,
sizeof(farg));
}
int
vmwgfx_present_readback(int drm_fd, uint32_t fb_id, RegionPtr region)
{
BoxPtr clips = REGION_RECTS(region);
unsigned int num_clips = REGION_NUM_RECTS(region);
struct drm_vmw_fence_rep rep;
struct drm_vmw_present_readback_arg arg;
int ret;
unsigned i;
struct drm_vmw_rect *rects, *r;
rects = calloc(num_clips, sizeof(*rects));
if (!rects) {
LogMessage(X_ERROR, "Failed to alloc cliprects for "
"present readback.\n");
return -1;
}
memset(&arg, 0, sizeof(arg));
memset(&rep, 0, sizeof(rep));
arg.fb_id = fb_id;
arg.num_clips = num_clips;
arg.clips_ptr = (unsigned long) rects;
arg.fence_rep = (unsigned long) &rep;
rep.error = -EFAULT;
for (i = 0, r = rects; i < num_clips; ++i, ++r, ++clips) {
r->x = clips->x1;
r->y = clips->y1;
r->w = clips->x2 - clips->x1;
r->h = clips->y2 - clips->y1;
}
ret = drmCommandWrite(drm_fd, DRM_VMW_PRESENT_READBACK, &arg, sizeof(arg));
if (ret)
LogMessage(X_ERROR, "Present readback error %s.\n", strerror(-ret));
free(rects);
/*
* Sync to avoid racing with Xorg SW rendering.
*/
if (rep.error == 0) {
ret = vmwgfx_fence_wait(drm_fd, rep.handle, TRUE);
if (ret) {
LogMessage(X_ERROR, "Present readback fence wait error %s.\n",
strerror(-ret));
vmwgfx_fence_unref(drm_fd, rep.handle);
}
}
return 0;
}
int
vmwgfx_present(int drm_fd, uint32_t fb_id, unsigned int dst_x,
unsigned int dst_y, RegionPtr region, uint32_t handle)
{
BoxPtr clips = REGION_RECTS(region);
unsigned int num_clips = REGION_NUM_RECTS(region);
struct drm_vmw_present_arg arg;
unsigned int i;
struct drm_vmw_rect *rects, *r;
int ret;
if (num_clips == 0)
return 0;
rects = calloc(num_clips, sizeof(*rects));
if (!rects) {
LogMessage(X_ERROR, "Failed to alloc cliprects for "
"present.\n");
return -1;
}
memset(&arg, 0, sizeof(arg));
arg.fb_id = fb_id;
arg.sid = handle;
arg.dest_x = dst_x;
arg.dest_y = dst_y;
arg.num_clips = num_clips;
arg.clips_ptr = (unsigned long) rects;
for (i = 0, r = rects; i < num_clips; ++i, ++r, ++clips) {
r->x = clips->x1;
r->y = clips->y1;
r->w = clips->x2 - clips->x1;
r->h = clips->y2 - clips->y1;
}
ret = drmCommandWrite(drm_fd, DRM_VMW_PRESENT, &arg, sizeof(arg));
if (ret) {
LogMessage(X_ERROR, "Present error %s.\n", strerror(-ret));
}
free(rects);
return ((ret != 0) ? -1 : 0);
}
struct vmwgfx_int_dmabuf {
struct vmwgfx_dmabuf buf;
uint64_t map_handle;
uint64_t sync_handle;
int sync_valid;
int drm_fd;
uint32_t map_count;
void *addr;
};
static inline struct vmwgfx_int_dmabuf *
vmwgfx_int_dmabuf(struct vmwgfx_dmabuf *buf)
{
return (struct vmwgfx_int_dmabuf *) buf;
}
struct vmwgfx_dmabuf*
vmwgfx_dmabuf_alloc(int drm_fd, size_t size)
{
union drm_vmw_alloc_dmabuf_arg arg;
struct vmwgfx_dmabuf *buf;
struct vmwgfx_int_dmabuf *ibuf;
int ret;
ibuf = calloc(1, sizeof(*ibuf));
if (!ibuf)
return NULL;
buf = &ibuf->buf;
memset(&arg, 0, sizeof(arg));
arg.req.size = size;
ret = drmCommandWriteRead(drm_fd, DRM_VMW_ALLOC_DMABUF, &arg,
sizeof(arg));
if (ret)
goto out_kernel_fail;
ibuf = vmwgfx_int_dmabuf(buf);
ibuf->map_handle = arg.rep.map_handle;
ibuf->drm_fd = drm_fd;
buf->handle = arg.rep.handle;
buf->gmr_id = arg.rep.cur_gmr_id;
buf->gmr_offset = arg.rep.cur_gmr_offset;
buf->size = size;
return buf;
out_kernel_fail:
free(buf);
return NULL;
}
void *
vmwgfx_dmabuf_map(struct vmwgfx_dmabuf *buf)
{
struct vmwgfx_int_dmabuf *ibuf = vmwgfx_int_dmabuf(buf);
if (ibuf->addr)
return ibuf->addr;
ibuf->addr = mmap(NULL, buf->size, PROT_READ | PROT_WRITE, MAP_SHARED,
ibuf->drm_fd, ibuf->map_handle);
if (ibuf->addr == MAP_FAILED) {
ibuf->addr = NULL;
return NULL;
}
ibuf->map_count++;
return ibuf->addr;
}
void
vmwgfx_dmabuf_unmap(struct vmwgfx_dmabuf *buf)
{
struct vmwgfx_int_dmabuf *ibuf = vmwgfx_int_dmabuf(buf);
if (--ibuf->map_count)
return;
/*
* It's a pretty important performance optimzation not to call
* munmap here, although we should watch out for cases where we might fill
* the virtual memory space of the process.
*/
}
void
vmwgfx_dmabuf_destroy(struct vmwgfx_dmabuf *buf)
{
struct vmwgfx_int_dmabuf *ibuf = vmwgfx_int_dmabuf(buf);
struct drm_vmw_unref_dmabuf_arg arg;
if (ibuf->addr) {
munmap(ibuf->addr, buf->size);
ibuf->addr = NULL;
}
memset(&arg, 0, sizeof(arg));
arg.handle = buf->handle;
(void) drmCommandWrite(ibuf->drm_fd, DRM_VMW_UNREF_DMABUF, &arg,
sizeof(arg));
free(buf);
}
int
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vmwgfx_dma(int host_x, int host_y,
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RegionPtr region, struct vmwgfx_dmabuf *buf,
uint32_t buf_pitch, uint32_t surface_handle, int to_surface)
{
BoxPtr clips = REGION_RECTS(region);
unsigned int num_clips = REGION_NUM_RECTS(region);
struct drm_vmw_execbuf_arg arg;
struct drm_vmw_fence_rep rep;
int ret;
unsigned int size;
unsigned i;
SVGA3dCopyBox *cb;
SVGA3dCmdSurfaceDMASuffix *suffix;
SVGA3dCmdSurfaceDMA *body;
struct vmwgfx_int_dmabuf *ibuf = vmwgfx_int_dmabuf(buf);
struct {
SVGA3dCmdHeader header;
SVGA3dCmdSurfaceDMA body;
SVGA3dCopyBox cb;
} *cmd;
if (num_clips == 0)
return 0;
size = sizeof(*cmd) + (num_clips - 1) * sizeof(cmd->cb) +
sizeof(*suffix);
cmd = malloc(size);
if (!cmd)
return -1;
cmd->header.id = SVGA_3D_CMD_SURFACE_DMA;
cmd->header.size = sizeof(cmd->body) + num_clips * sizeof(cmd->cb) +
sizeof(*suffix);
cb = &cmd->cb;
suffix = (SVGA3dCmdSurfaceDMASuffix *) &cb[num_clips];
suffix->suffixSize = sizeof(*suffix);
suffix->maximumOffset = (uint32_t) -1;
suffix->flags.discard = 0;
suffix->flags.unsynchronized = 0;
suffix->flags.reserved = 0;
body = &cmd->body;
body->guest.ptr.gmrId = buf->gmr_id;
body->guest.ptr.offset = buf->gmr_offset;
body->guest.pitch = buf_pitch;
body->host.sid = surface_handle;
body->host.face = 0;
body->host.mipmap = 0;
body->transfer = (to_surface ? SVGA3D_WRITE_HOST_VRAM :
SVGA3D_READ_HOST_VRAM);
for (i=0; i < num_clips; i++, cb++, clips++) {
cb->x = (uint16_t) clips->x1 + host_x;
cb->y = (uint16_t) clips->y1 + host_y;
cb->z = 0;
cb->srcx = (uint16_t) clips->x1;
cb->srcy = (uint16_t) clips->y1;
cb->srcz = 0;
cb->w = (uint16_t) (clips->x2 - clips->x1);
cb->h = (uint16_t) (clips->y2 - clips->y1);
cb->d = 1;
#if 0
LogMessage(X_INFO, "DMA! x: %u y: %u srcx: %u srcy: %u w: %u h: %u %s\n",
cb->x, cb->y, cb->srcx, cb->srcy, cb->w, cb->h,
to_surface ? "to" : "from");
#endif
}
memset(&arg, 0, sizeof(arg));
memset(&rep, 0, sizeof(rep));
rep.error = -EFAULT;
arg.fence_rep = ((to_surface) ? 0UL : (unsigned long)&rep);
arg.commands = (unsigned long)cmd;
arg.command_size = size;
arg.throttle_us = 0;
arg.version = DRM_VMW_EXECBUF_VERSION;
ret = drmCommandWrite(ibuf->drm_fd, DRM_VMW_EXECBUF, &arg, sizeof(arg));
if (ret) {
LogMessage(X_ERROR, "DMA error %s.\n", strerror(-ret));
}
free(cmd);
if (rep.error == 0) {
ret = vmwgfx_fence_wait(ibuf->drm_fd, rep.handle, TRUE);
if (ret) {
LogMessage(X_ERROR, "DMA from host fence wait error %s.\n",
strerror(-ret));
vmwgfx_fence_unref(ibuf->drm_fd, rep.handle);
}
}
return 0;
}
int
vmwgfx_get_param(int drm_fd, uint32_t param, uint64_t *out)
{
struct drm_vmw_getparam_arg gp_arg;
int ret;
memset(&gp_arg, 0, sizeof(gp_arg));
gp_arg.param = param;
ret = drmCommandWriteRead(drm_fd, DRM_VMW_GET_PARAM,
&gp_arg, sizeof(gp_arg));
if (ret == 0) {
*out = gp_arg.value;
}
return ret;
}
int
vmwgfx_num_streams(int drm_fd, uint32_t *ntot, uint32_t *nfree)
{
uint64_t v1, v2;
int ret;
ret = vmwgfx_get_param(drm_fd, DRM_VMW_PARAM_NUM_STREAMS, &v1);
if (ret)
return ret;
ret = vmwgfx_get_param(drm_fd, DRM_VMW_PARAM_NUM_FREE_STREAMS, &v2);
if (ret)
return ret;
*ntot = (uint32_t)v1;
*nfree = (uint32_t)v2;
return 0;
}
int
vmwgfx_claim_stream(int drm_fd, uint32_t *out)
{
struct drm_vmw_stream_arg s_arg;
int ret;
ret = drmCommandRead(drm_fd, DRM_VMW_CLAIM_STREAM,
&s_arg, sizeof(s_arg));
if (ret)
return -1;
*out = s_arg.stream_id;
return 0;
}
int
vmwgfx_unref_stream(int drm_fd, uint32_t stream_id)
{
struct drm_vmw_stream_arg s_arg;
int ret;
memset(&s_arg, 0, sizeof(s_arg));
s_arg.stream_id = stream_id;
ret = drmCommandWrite(drm_fd, DRM_VMW_UNREF_STREAM,
&s_arg, sizeof(s_arg));
return (ret != 0) ? -1 : 0;
}
int
vmwgfx_cursor_bypass(int drm_fd, int xhot, int yhot)
{
struct drm_vmw_cursor_bypass_arg arg;
int ret;
memset(&arg, 0, sizeof(arg));
arg.flags = DRM_VMW_CURSOR_BYPASS_ALL;
arg.xhot = xhot;
arg.yhot = yhot;
ret = drmCommandWrite(drm_fd, DRM_VMW_CURSOR_BYPASS,
&arg, sizeof(arg));
return ret;
}
int
vmwgfx_update_gui_layout(int drm_fd, unsigned int num_rects,
struct drm_vmw_rect *rects)
{
struct drm_vmw_update_layout_arg arg;
memset(&arg, 0, sizeof(arg));
arg.num_outputs = num_rects;
arg.rects = (unsigned long) rects;
return drmCommandWrite(drm_fd, DRM_VMW_UPDATE_LAYOUT, &arg,
sizeof(arg));
}
int
vmwgfx_max_fb_size(int drm_fd, size_t *size)
{
uint64_t tmp_size;
if (vmwgfx_get_param(drm_fd, DRM_VMW_PARAM_MAX_FB_SIZE, &tmp_size) != 0)
return -1;
*size = tmp_size;
return 0;
}
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#ifdef HAVE_LIBDRM_2_4_38
/**
* vmwgfx_prime_fd_to_handle - Return a TTM handle to a prime object
*
* @drm_fd: File descriptor for the drm connection.
* @prime_fd: File descriptor identifying the prime object.
* @handle: Pointer to returned TTM handle.
*
* Takes a reference on the underlying object and returns a TTM handle to it.
*/
int
vmwgfx_prime_fd_to_handle(int drm_fd, int prime_fd, uint32_t *handle)
{
*handle = 0;
return drmPrimeFDToHandle(drm_fd, prime_fd, handle);
}
/**
* vmwgfx_prime_release_handle - Release a reference on a TTM object
*
* @drm_fd: File descriptor for the drm connection.
* @handle: TTM handle as returned by vmwgfx_prime_fd_to_handle.
*
* Releases the reference obtained by vmwgfx_prime_fd_to_handle().
*/
void
vmwgfx_prime_release_handle(int drm_fd, uint32_t handle)
{
struct drm_vmw_surface_arg s_arg;
memset(&s_arg, 0, sizeof(s_arg));
s_arg.sid = handle;
(void) drmCommandWrite(drm_fd, DRM_VMW_UNREF_SURFACE, &s_arg,
sizeof(s_arg));
}
#endif /* HAVE_LIBDRM_2_4_38 */