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Diffstat (limited to 'libdrm/xf86drm.c')
-rw-r--r--libdrm/xf86drm.c444
1 files changed, 303 insertions, 141 deletions
diff --git a/libdrm/xf86drm.c b/libdrm/xf86drm.c
index 5c2c08c3..73a083e3 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
@@ -81,7 +81,18 @@ extern unsigned long _bus_base(void);
#include "xf86drm.h"
#include "drm.h"
-#define DRM_FIXED_DEVICE_MAJOR 145
+#ifndef DRM_MAJOR
+#define DRM_MAJOR 226 /* Linux */
+#endif
+
+#ifndef __linux__
+#undef DRM_MAJOR
+#define DRM_MAJOR 145 /* Should set in drm.h for *BSD */
+#endif
+
+#ifndef DRM_MAX_MINOR
+#define DRM_MAX_MINOR 16
+#endif
#ifdef __linux__
#include <sys/sysmacros.h> /* for makedev() */
@@ -119,7 +130,7 @@ void drmFree(void *pt)
static char *drmStrdup(const char *s)
{
char *retval = NULL;
-
+
if (s) {
retval = _DRM_MALLOC(strlen(s)+1);
strcpy(retval, s);
@@ -161,93 +172,108 @@ static drmHashEntry *drmGetEntry(int fd)
return entry;
}
-/* drm_open is used to open the /dev/dri device */
-
-static int drm_open(const char *file)
-{
- int fd = open(file, O_RDWR, 0);
-
- if (fd >= 0) return fd;
- return -errno;
-}
-
-static int drmOpenDevice(const char *path, long dev,
- mode_t mode, uid_t user, gid_t group)
+static int drmOpenDevice(long dev, int minor)
{
#ifdef XFree86LOADER
struct xf86stat st;
#else
struct stat st;
#endif
+ char buf[64];
+ int fd;
+ mode_t dirmode = DRM_DEV_DIRMODE;
+ mode_t devmode = DRM_DEV_MODE;
+ int isroot = !geteuid();
+#if defined(XFree86Server)
+ uid_t user = DRM_DEV_UID;
+ gid_t group = DRM_DEV_GID;
+#endif
- /* Fiddle mode to remove execute bits */
- mode &= ~(S_IXUSR|S_IXGRP|S_IXOTH);
+#if defined(XFree86Server)
+ devmode = xf86ConfigDRI.mode ? xf86ConfigDRI.mode : DRM_DEV_MODE;
+ dirmode = (devmode & S_IRUSR) ? S_IXUSR : 0;
+ dirmode |= (devmode & S_IRGRP) ? S_IXGRP : 0;
+ dirmode |= (devmode & S_IROTH) ? S_IXOTH : 0;
+ dirmode |= devmode;
+ devmode &= ~(S_IXUSR|S_IXGRP|S_IXOTH);
+ group = (xf86ConfigDRI.group >= 0) ? xf86ConfigDRI.group : DRM_DEV_GID;
+#endif
- if (!stat(path, &st) && st.st_rdev == dev) {
- if (!geteuid()) {
- chown(path, user, group);
- chmod(path, mode);
- }
- return drm_open(path);
+ if (stat(DRM_DIR_NAME, &st)) {
+ if (!isroot) return DRM_ERR_NOT_ROOT;
+ remove(DRM_DIR_NAME);
+ mkdir(DRM_DIR_NAME, dirmode);
}
+#if defined(XFree86Server)
+ chown(DRM_DIR_NAME, user, group);
+ chmod(DRM_DIR_NAME, dirmode);
+#endif
- if (geteuid()) return DRM_ERR_NOT_ROOT;
- remove(path);
- if (mknod(path, S_IFCHR, dev)) {
- remove(path);
- return DRM_ERR_NOT_ROOT;
+ sprintf(buf, DRM_DEV_NAME, DRM_DIR_NAME, minor);
+ if (stat(buf, &st) || st.st_rdev != dev) {
+ if (!isroot) return DRM_ERR_NOT_ROOT;
+ remove(buf);
+ mknod(buf, S_IFCHR | devmode, dev);
}
- chown(path, user, group);
- chmod(path, mode);
- return drm_open(path);
+#if defined(XFree86Server)
+ chown(buf, user, group);
+ chmod(buf, devmode);
+#endif
+
+ if ((fd = open(buf, O_RDWR, 0)) >= 0) return fd;
+ remove(buf);
+ return -errno;
+}
+
+int drmOpenMinor(int minor, int create)
+{
+ int fd;
+ char buf[64];
+
+ if (create) return drmOpenDevice(makedev(DRM_MAJOR, minor), minor);
+
+ sprintf(buf, DRM_DEV_NAME, DRM_DIR_NAME, minor);
+ if ((fd = open(buf, O_RDWR, 0)) >= 0) return fd;
+ return -errno;
}
-/* drmAvailable looks for /proc/dri, and returns 1 if it is present. On
- OSs that do not have a Linux-like /proc, this information will not be
- available, and we'll have to create a device and check if the driver is
- loaded that way. */
+/* drmAvailable looks for (DRM_MAJOR, 0) and returns 1 if it returns
+ information for DRM_IOCTL_VERSION. For backward compatibility with
+ older Linux implementations, /proc/dri is also checked. */
int drmAvailable(void)
{
- char dev_name[64];
drmVersionPtr version;
int retval = 0;
int fd;
+
+ if ((fd = drmOpenMinor(0, 1)) < 0) {
+ /* Try proc for backward Linux compatibility */
+ if (!access("/proc/dri/0", R_OK)) return 1;
+ return 0;
+ }
- if (!access("/proc/dri/0", R_OK)) return 1;
-
- sprintf(dev_name, "/dev/dri-temp-%d", getpid());
-
- remove(dev_name);
- if ((fd = drmOpenDevice(dev_name, makedev(DRM_FIXED_DEVICE_MAJOR, 0),
- S_IRUSR, geteuid(), getegid())) >= 0) {
- /* Read version to make sure this is
- actually a DRI device. */
- if ((version = drmGetVersion(fd))) {
- retval = 1;
- drmFreeVersion(version);
- }
- close(fd);
+ if ((version = drmGetVersion(fd))) {
+ retval = 1;
+ drmFreeVersion(version);
}
- remove(dev_name);
+ close(fd);
return retval;
}
static int drmOpenByBusid(const char *busid)
{
- int i;
- char dev_name[64];
- char *buf;
- int fd;
-
- for (i = 0; i < 8; i++) {
- sprintf(dev_name, "/dev/dri/card%d", i);
- if ((fd = drm_open(dev_name)) >= 0) {
+ int i;
+ int fd;
+ const char *buf;
+
+ for (i = 0; i < DRM_MAX_MINOR; i++) {
+ if ((fd = drmOpenMinor(i, 0)) >= 0) {
buf = drmGetBusid(fd);
if (buf && !strcmp(buf, busid)) {
- drmFreeBusid(buf);
- return fd;
+ drmFreeBusid(buf);
+ return fd;
}
if (buf) drmFreeBusid(buf);
close(fd);
@@ -258,54 +284,43 @@ static int drmOpenByBusid(const char *busid)
static int drmOpenByName(const char *name)
{
- int i;
- char proc_name[64];
- char dev_name[64];
- char buf[512];
- mode_t mode = DRM_DEV_MODE;
- mode_t dirmode;
- gid_t group = DRM_DEV_GID;
- uid_t user = DRM_DEV_UID;
- int fd;
- char *pt;
- char *driver = NULL;
- char *devstring;
- long dev = 0;
- int retcode;
-
-#if defined(XFree86Server)
- mode = xf86ConfigDRI.mode ? xf86ConfigDRI.mode : DRM_DEV_MODE;
- group = (xf86ConfigDRI.group >= 0) ? xf86ConfigDRI.group : DRM_DEV_GID;
-#endif
-
-#if defined(XFree86Server)
+ int i;
+ int fd;
+ drmVersionPtr version;
+
if (!drmAvailable()) {
+#if !defined(XFree86Server)
+ return -1;
+#else
/* try to load the kernel module now */
if (!xf86LoadKernelModule(name)) {
ErrorF("[drm] failed to load kernel module \"%s\"\n",
name);
return -1;
}
- }
-#else
- if (!drmAvailable())
- return -1;
#endif
+ }
- if (!geteuid()) {
- dirmode = mode;
- if (dirmode & S_IRUSR) dirmode |= S_IXUSR;
- if (dirmode & S_IRGRP) dirmode |= S_IXGRP;
- if (dirmode & S_IROTH) dirmode |= S_IXOTH;
- dirmode &= ~(S_IWGRP | S_IWOTH);
- mkdir("/dev/dri", 0);
- chown("/dev/dri", user, group);
- chmod("/dev/dri", dirmode);
+ for (i = 0; i < DRM_MAX_MINOR; i++) {
+ if ((fd = drmOpenMinor(i, 1)) >= 0) {
+ if ((version = drmGetVersion(fd))) {
+ if (!strcmp(version->name, name)) {
+ drmFreeVersion(version);
+ return fd;
+ }
+ drmFreeVersion(version);
+ }
+ }
}
+#ifdef __linux__
+ /* Backward-compatibility /proc support */
for (i = 0; i < 8; i++) {
+ char proc_name[64], buf[512];
+ char *driver, *pt, *devstring;
+ int retcode;
+
sprintf(proc_name, "/proc/dri/%d/name", i);
- sprintf(dev_name, "/dev/dri/card%d", i);
if ((fd = open(proc_name, 0, 0)) >= 0) {
retcode = read(fd, buf, sizeof(buf)-1);
close(fd);
@@ -319,34 +334,17 @@ static int drmOpenByName(const char *name)
for (devstring = ++pt; *pt && *pt != ' '; ++pt)
;
if (*pt) { /* Found busid */
- return drmOpenByBusid(++pt);
+ return drmOpenByBusid(++pt);
} else { /* No busid */
- dev = strtol(devstring, NULL, 0);
- return drmOpenDevice(dev_name, dev,
- mode, user, group);
+ return drmOpenDevice(strtol(devstring, NULL, 0),i);
}
}
}
}
- } else {
- drmVersionPtr version;
- /* /proc/dri not available, possibly
- because we aren't on a Linux system.
- So, try to create the next device and
- see if it's active. */
- dev = makedev(DRM_FIXED_DEVICE_MAJOR, i);
- if ((fd = drmOpenDevice(dev_name, dev, mode, user, group))) {
- if ((version = drmGetVersion(fd))) {
- if (!strcmp(version->name, name)) {
- drmFreeVersion(version);
- return fd;
- }
- drmFreeVersion(version);
- }
- }
- remove(dev_name);
}
}
+#endif
+
return -1;
}
@@ -408,7 +406,7 @@ 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 +419,7 @@ 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 +501,7 @@ 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 +517,14 @@ 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 +540,16 @@ 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 +560,7 @@ int drmMarkBufs(int fd, double low, double high)
}
}
drmFree(info.list);
-
+
return 0;
}
@@ -630,7 +628,7 @@ 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 +655,7 @@ 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 +687,19 @@ 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 +711,17 @@ 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 +736,7 @@ 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 +835,7 @@ 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;
@@ -1074,12 +1082,166 @@ void *drmGetContextTag(int fd, drmContext context)
{
drmHashEntry *entry = drmGetEntry(fd);
void *value;
-
+
if (drmHashLookup(entry->tagTable, context, &value)) return NULL;
return value;
}
+int drmGetMap(int fd, int idx, drmHandle *offset, drmSize *size,
+ drmMapType *type, drmMapFlags *flags, drmHandle *handle,
+ int *mtrr)
+{
+ drm_map_t map;
+
+ map.offset = idx;
+ if (ioctl(fd, DRM_IOCTL_GET_MAP, &map)) return -errno;
+ *offset = map.offset;
+ *size = map.size;
+ *type = map.type;
+ *flags = map.flags;
+ *handle = (unsigned long)map.handle;
+ *mtrr = map.mtrr;
+ return 0;
+}
+
+int drmGetClient(int fd, int idx, int *auth, int *pid, int *uid,
+ unsigned long *magic, unsigned long *iocs)
+{
+ drm_client_t client;
+
+ client.idx = idx;
+ if (ioctl(fd, DRM_IOCTL_GET_CLIENT, &client)) return -errno;
+ *auth = client.auth;
+ *pid = client.pid;
+ *uid = client.uid;
+ *magic = client.magic;
+ *iocs = client.iocs;
+ return 0;
+}
+
+int drmGetStats(int fd, drmStatsT *stats)
+{
+ drm_stats_t s;
+ int i;
+
+ if (ioctl(fd, DRM_IOCTL_GET_STATS, &s)) return -errno;
+
+ stats->count = 0;
+ memset(stats, 0, sizeof(*stats));
+ if (s.count > sizeof(stats->data)/sizeof(stats->data[0]))
+ return -1;
+
+#define SET_VALUE \
+ stats->data[i].long_format = "%-20.20s"; \
+ stats->data[i].rate_format = "%8.8s"; \
+ stats->data[i].isvalue = 1; \
+ stats->data[i].verbose = 0
+
+#define SET_COUNT \
+ stats->data[i].long_format = "%-20.20s"; \
+ stats->data[i].rate_format = "%5.5s"; \
+ stats->data[i].isvalue = 0; \
+ stats->data[i].mult_names = "kgm"; \
+ stats->data[i].mult = 1000; \
+ stats->data[i].verbose = 0
+
+#define SET_BYTE \
+ stats->data[i].long_format = "%-20.20s"; \
+ stats->data[i].rate_format = "%5.5s"; \
+ stats->data[i].isvalue = 0; \
+ stats->data[i].mult_names = "KGM"; \
+ stats->data[i].mult = 1024; \
+ stats->data[i].verbose = 0
+
+
+ stats->count = s.count;
+ for (i = 0; i < s.count; i++) {
+ stats->data[i].value = s.data[i].value;
+ switch (s.data[i].type) {
+ case _DRM_STAT_LOCK:
+ stats->data[i].long_name = "Lock";
+ stats->data[i].rate_name = "Lock";
+ SET_VALUE;
+ break;
+ case _DRM_STAT_OPENS:
+ stats->data[i].long_name = "Opens";
+ stats->data[i].rate_name = "O";
+ SET_COUNT;
+ stats->data[i].verbose = 1;
+ break;
+ case _DRM_STAT_CLOSES:
+ stats->data[i].long_name = "Closes";
+ stats->data[i].rate_name = "Lock";
+ SET_COUNT;
+ stats->data[i].verbose = 1;
+ break;
+ case _DRM_STAT_IOCTLS:
+ stats->data[i].long_name = "Ioctls";
+ stats->data[i].rate_name = "Ioc/s";
+ SET_COUNT;
+ break;
+ case _DRM_STAT_LOCKS:
+ stats->data[i].long_name = "Locks";
+ stats->data[i].rate_name = "Lck/s";
+ SET_COUNT;
+ break;
+ case _DRM_STAT_UNLOCKS:
+ stats->data[i].long_name = "Unlocks";
+ stats->data[i].rate_name = "Unl/s";
+ SET_COUNT;
+ break;
+ case _DRM_STAT_IRQ:
+ stats->data[i].long_name = "IRQs";
+ stats->data[i].rate_name = "IRQ/s";
+ SET_COUNT;
+ break;
+ case _DRM_STAT_PRIMARY:
+ stats->data[i].long_name = "Primary Bytes";
+ stats->data[i].rate_name = "PB/s";
+ SET_BYTE;
+ break;
+ case _DRM_STAT_SECONDARY:
+ stats->data[i].long_name = "Secondary Bytes";
+ stats->data[i].rate_name = "SB/s";
+ SET_BYTE;
+ break;
+ case _DRM_STAT_DMA:
+ stats->data[i].long_name = "DMA";
+ stats->data[i].rate_name = "DMA/s";
+ SET_COUNT;
+ break;
+ case _DRM_STAT_SPECIAL:
+ stats->data[i].long_name = "Special DMA";
+ stats->data[i].rate_name = "dma/s";
+ SET_COUNT;
+ break;
+ case _DRM_STAT_MISSED:
+ stats->data[i].long_name = "Miss";
+ stats->data[i].rate_name = "Ms/s";
+ SET_COUNT;
+ break;
+ case _DRM_STAT_VALUE:
+ stats->data[i].long_name = "Value";
+ stats->data[i].rate_name = "Value";
+ SET_VALUE;
+ break;
+ case _DRM_STAT_BYTE:
+ stats->data[i].long_name = "Bytes";
+ stats->data[i].rate_name = "B/s";
+ SET_BYTE;
+ break;
+ case _DRM_STAT_COUNT:
+ default:
+ stats->data[i].long_name = "Count";
+ stats->data[i].rate_name = "Cnt/s";
+ SET_COUNT;
+ break;
+ }
+ }
+ return 0;
+}
+
#if defined(XFree86Server) || defined(DRM_USE_MALLOC)
static void drmSIGIOHandler(int interrupt, void *closure)
{
@@ -1108,7 +1270,7 @@ 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 +1303,7 @@ int drmRemoveSIGIOHandler(int fd)
drmHashEntry *entry = drmGetEntry(fd);
entry->f = NULL;
-
+
return xf86RemoveSIGIOHandler(fd);
}
#endif
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-23 01:44:46 +0000