diff options
Diffstat (limited to 'vmwgfx/vmwgfx_drmi.c')
| -rw-r--r-- | vmwgfx/vmwgfx_drmi.c | 507 |
1 files changed, 507 insertions, 0 deletions
diff --git a/vmwgfx/vmwgfx_drmi.c b/vmwgfx/vmwgfx_drmi.c new file mode 100644 index 0000000..3add305 --- /dev/null +++ b/vmwgfx/vmwgfx_drmi.c @@ -0,0 +1,507 @@ +/* + * 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 <drm/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, uint64_t seq) +{ + struct drm_vmw_fence_wait_arg farg; + memset(&farg, 0, sizeof(farg)); + + farg.sequence = seq; + farg.cookie_valid = 0; + + return drmCommandWriteRead(drm_fd, DRM_VMW_FENCE_WAIT, &farg, + sizeof(farg)); +} + +int +vmwgfx_present_readback(int drm_fd, RegionPtr region) +{ + 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; + SVGA3dRect *cr; + + struct { + SVGA3dCmdHeader header; + SVGA3dRect cr; + } *cmd; + + if (num_clips == 0) + return 0; + + size = sizeof(*cmd) + (num_clips - 1) * sizeof(cmd->cr); + cmd = malloc(size); + if (!cmd) + return -1; + + cmd->header.id = SVGA_3D_CMD_PRESENT_READBACK; + cmd->header.size = num_clips * sizeof(cmd->cr); + + for (i=0, cr = &cmd->cr; i < num_clips; i++, cr++, clips++) { + cr->x = (uint16_t) clips->x1; + cr->y = (uint16_t) clips->y1; + cr->w = (uint16_t) (clips->x2 - clips->x1); + cr->h = (uint16_t) (clips->y2 - clips->y1); +#if 0 + LogMessage(X_INFO, + "Readback x: %u y: %u srcx: %u srcy: %u w: %u h: %u\n", + cr->x, cr->y, cr->x, cr->y, cr->w, cr->h); +#endif + } + + + memset(&arg, 0, sizeof(arg)); + memset(&rep, 0, sizeof(rep)); + + rep.error = -EFAULT; + arg.fence_rep = (unsigned long)&rep; + arg.commands = (unsigned long)cmd; + arg.command_size = size; + arg.throttle_us = 0; + + ret = drmCommandWrite(drm_fd, DRM_VMW_EXECBUF, &arg, sizeof(arg)); + if (ret) + LogMessage(X_ERROR, "Present readback error %s.\n", strerror(-ret)); + + free(cmd); + + /* + * Sync to avoid racing with Xorg SW rendering. + */ + + if (rep.error == 0) { + ret = vmwgfx_fence_wait(drm_fd, rep.fence_seq); + if (ret) + LogMessage(X_ERROR, "Present readback fence wait error %s.\n", + strerror(-ret)); + } + + return 0; +} + +int +vmwgfx_present(int drm_fd, 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_execbuf_arg arg; + struct drm_vmw_fence_rep rep; + int ret; + unsigned int size; + unsigned i; + SVGA3dCopyRect *cr; + + struct { + SVGA3dCmdHeader header; + SVGA3dCmdPresent body; + SVGA3dCopyRect cr; + } *cmd; + + if (num_clips == 0) + return 0; + + size = sizeof(*cmd) + (num_clips - 1) * sizeof(cmd->cr); + cmd = malloc(size); + if (!cmd) + return -1; + + cmd->header.id = SVGA_3D_CMD_PRESENT; + cmd->header.size = sizeof(cmd->body) + num_clips * sizeof(cmd->cr); + cmd->body.sid = handle; + + + for (i=0, cr = &cmd->cr; i < num_clips; i++, cr++, clips++) { + cr->x = (uint16_t) clips->x1 + dst_x; + cr->y = (uint16_t) clips->y1 + dst_y; + cr->srcx = (uint16_t) clips->x1; + cr->srcy = (uint16_t) clips->y1; + cr->w = (uint16_t) (clips->x2 - clips->x1); + cr->h = (uint16_t) (clips->y2 - clips->y1); +#if 0 + LogMessage(X_INFO, "Present: x: %u y: %u srcx: %u srcy: %u w: %u h: %u\n", + cr->x, cr->y, cr->srcx, cr->srcy, cr->w, cr->h); +#endif + } + + memset(&arg, 0, sizeof(arg)); + memset(&rep, 0, sizeof(rep)); + + rep.error = -EFAULT; + arg.fence_rep = (unsigned long)&rep; + arg.commands = (unsigned long)cmd; + arg.command_size = size; + arg.throttle_us = 0; + + ret = drmCommandWrite(drm_fd, DRM_VMW_EXECBUF, &arg, sizeof(arg)); + if (ret) { + LogMessage(X_ERROR, "Present error %s.\n", strerror(-ret)); + } + + free(cmd); + return 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 +vmwgfx_dma(unsigned int host_x, unsigned int host_y, + 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 = (unsigned long)&rep; + arg.commands = (unsigned long)cmd; + arg.command_size = size; + arg.throttle_us = 0; + + 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 (!to_surface && rep.error == 0) { + ret = vmwgfx_fence_wait(ibuf->drm_fd, rep.fence_seq); + if (ret) + LogMessage(X_ERROR, "DMA from host fence wait error %s.\n", + strerror(-ret)); + } + + return 0; +} + +static 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 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_max_fb_size(int drm_fd, size_t *size) +{ + drmVersionPtr ver; + int ret = -1; + uint64_t tmp_size; + + ver = drmGetVersion(drm_fd); + if (ver == NULL || + !(ver->version_major > 1 || + (ver->version_major == 1 && ver->version_minor >= 3))) + goto out; + + if (vmwgfx_get_param(drm_fd, DRM_VMW_PARAM_MAX_FB_SIZE, &tmp_size) != 0) + goto out; + + *size = tmp_size; + ret = 0; + + out: + drmFreeVersion(ver); + return ret; +} |