diff options
Diffstat (limited to 'libdrm/xf86drm.c')
| -rw-r--r-- | libdrm/xf86drm.c | 64 |
1 files changed, 37 insertions, 27 deletions
diff --git a/libdrm/xf86drm.c b/libdrm/xf86drm.c index 5c2c08c3..e472aada 100644 --- a/libdrm/xf86drm.c +++ b/libdrm/xf86drm.c @@ -11,11 +11,11 @@ * the rights to use, copy, modify, merge, publish, distribute, sublicense, * 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 NONINFRINGEMENT. IN NO EVENT SHALL @@ -23,12 +23,12 @@ * 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. - * + * * Authors: Rickard E. (Rik) Faith <faith@valinux.com> * Kevin E. Martin <martin@valinux.com> * * $XFree86: xc/programs/Xserver/hw/xfree86/os-support/linux/drm/xf86drm.c,v 1.17 2000/09/24 13:51:32 alanh Exp $ - * + * */ #ifdef XFree86Server @@ -119,7 +119,7 @@ void drmFree(void *pt) static char *drmStrdup(const char *s) { char *retval = NULL; - + if (s) { retval = _DRM_MALLOC(strlen(s)+1); strcpy(retval, s); @@ -213,7 +213,7 @@ int drmAvailable(void) drmVersionPtr version; int retval = 0; int fd; - + if (!access("/proc/dri/0", R_OK)) return 1; sprintf(dev_name, "/dev/dri-temp-%d", getpid()); @@ -408,7 +408,7 @@ drmVersionPtr drmGetVersion(int fd) version->date = NULL; version->desc_len = 0; version->desc = NULL; - + if (ioctl(fd, DRM_IOCTL_VERSION, version)) { drmFreeKernelVersion(version); return NULL; @@ -421,7 +421,7 @@ drmVersionPtr drmGetVersion(int fd) version->date = drmMalloc(version->date_len + 1); if (version->desc_len) version->desc = drmMalloc(version->desc_len + 1); - + if (ioctl(fd, DRM_IOCTL_VERSION, version)) { drmFreeKernelVersion(version); return NULL; @@ -503,7 +503,7 @@ int drmAddMap(int fd, map.offset = offset; #ifdef __alpha__ /* Make sure we add the bus_base to all but shm */ - if (type != DRM_SHM) + if (type != DRM_SHM) map.offset += BUS_BASE; #endif map.size = size; @@ -519,14 +519,14 @@ int drmAddBufs(int fd, int count, int size, drmBufDescFlags flags, int agp_offset) { drm_buf_desc_t request; - + request.count = count; request.size = size; request.low_mark = 0; request.high_mark = 0; request.flags = flags; request.agp_start = agp_offset; - + if (ioctl(fd, DRM_IOCTL_ADD_BUFS, &request)) return -errno; return request.count; } @@ -542,16 +542,16 @@ int drmMarkBufs(int fd, double low, double high) if (ioctl(fd, DRM_IOCTL_INFO_BUFS, &info)) return -EINVAL; if (!info.count) return -EINVAL; - + if (!(info.list = drmMalloc(info.count * sizeof(*info.list)))) return -ENOMEM; - + if (ioctl(fd, DRM_IOCTL_INFO_BUFS, &info)) { int retval = -errno; drmFree(info.list); return retval; } - + for (i = 0; i < info.count; i++) { info.list[i].low_mark = low * info.list[i].count; info.list[i].high_mark = high * info.list[i].count; @@ -562,7 +562,7 @@ int drmMarkBufs(int fd, double low, double high) } } drmFree(info.list); - + return 0; } @@ -630,7 +630,7 @@ drmBufInfoPtr drmGetBufInfo(int fd) if (info.count) { if (!(info.list = drmMalloc(info.count * sizeof(*info.list)))) return NULL; - + if (ioctl(fd, DRM_IOCTL_INFO_BUFS, &info)) { drmFree(info.list); return NULL; @@ -657,7 +657,7 @@ drmBufMapPtr drmMapBufs(int fd) drm_buf_map_t bufs; drmBufMapPtr retval; int i; - + bufs.count = 0; bufs.list = NULL; if (ioctl(fd, DRM_IOCTL_MAP_BUFS, &bufs)) return NULL; @@ -689,16 +689,19 @@ drmBufMapPtr drmMapBufs(int fd) int drmUnmapBufs(drmBufMapPtr bufs) { int i; - + for (i = 0; i < bufs->count; i++) { munmap(bufs->list[i].address, bufs->list[i].total); } return 0; } +#define DRM_DMA_RETRY 16 + int drmDMA(int fd, drmDMAReqPtr request) { drm_dma_t dma; + int ret, i = 0; /* Copy to hidden structure */ dma.context = request->context; @@ -710,10 +713,17 @@ int drmDMA(int fd, drmDMAReqPtr request) dma.request_size = request->request_size; dma.request_indices = request->request_list; dma.request_sizes = request->request_sizes; - if (ioctl(fd, DRM_IOCTL_DMA, &dma)) return -errno; - request->granted_count = dma.granted_count; - - return 0; + + do { + ret = ioctl( fd, DRM_IOCTL_DMA, &dma ); + } while ( ret && errno == EAGAIN && i++ < DRM_DMA_RETRY ); + + if ( ret == 0 ) { + request->granted_count = dma.granted_count; + return 0; + } else { + return -errno; + } } int drmGetLock(int fd, drmContext context, drmLockFlags flags) @@ -728,7 +738,7 @@ int drmGetLock(int fd, drmContext context, drmLockFlags flags) if (flags & DRM_LOCK_FLUSH_ALL) lock.flags |= _DRM_LOCK_FLUSH_ALL; if (flags & DRM_HALT_ALL_QUEUES) lock.flags |= _DRM_HALT_ALL_QUEUES; if (flags & DRM_HALT_CUR_QUEUES) lock.flags |= _DRM_HALT_CUR_QUEUES; - + while (ioctl(fd, DRM_IOCTL_LOCK, &lock)) ; return 0; @@ -827,7 +837,7 @@ int drmGetContextFlags(int fd, drmContext context, drmContextFlagsPtr flags) if (ctx.flags & _DRM_CONTEXT_2DONLY) *flags |= DRM_CONTEXT_2DONLY; return 0; } - + int drmDestroyContext(int fd, drmContext handle) { drm_ctx_t ctx; @@ -1074,7 +1084,7 @@ void *drmGetContextTag(int fd, drmContext context) { drmHashEntry *entry = drmGetEntry(fd); void *value; - + if (drmHashLookup(entry->tagTable, context, &value)) return NULL; return value; @@ -1108,7 +1118,7 @@ static void drmSIGIOHandler(int interrupt, void *closure) #if 0 fprintf(stderr, "Got %s\n", buf); #endif - + for (pt = buf; *pt != ' '; ++pt); /* Find first space */ ++pt; old = strtol(pt, &pt, 0); @@ -1141,7 +1151,7 @@ int drmRemoveSIGIOHandler(int fd) drmHashEntry *entry = drmGetEntry(fd); entry->f = NULL; - + return xf86RemoveSIGIOHandler(fd); } #endif |