X-Git-Url: http://git.osdn.net/view?a=blobdiff_plain;f=xf86drm.c;h=728ac78cf9634ac240ba8ad57836d5ecdfa28420;hb=7e6bf88cac315a9fa41818cf72a7b5d18a2cb1fc;hp=7766bfe937dbcc1b1519154a993e9ea141b7ce99;hpb=2e57bba870399926e1a0d0be3f4918a0a8432474;p=android-x86%2Fexternal-libdrm.git

diff --git a/xf86drm.c b/xf86drm.c
index 7766bfe9..728ac78c 100644
--- a/xf86drm.c
+++ b/xf86drm.c
@@ -994,8 +994,10 @@ char *drmGetBusid(int fd)
     if (drmIoctl(fd, DRM_IOCTL_GET_UNIQUE, &u))
         return NULL;
     u.unique = drmMalloc(u.unique_len + 1);
-    if (drmIoctl(fd, DRM_IOCTL_GET_UNIQUE, &u))
+    if (drmIoctl(fd, DRM_IOCTL_GET_UNIQUE, &u)) {
+        drmFree(u.unique);
         return NULL;
+    }
     u.unique[u.unique_len] = '\0';
 
     return u.unique;
@@ -1523,14 +1525,12 @@ drm_context_t *drmGetReservedContextList(int fd, int *count)
 
     if (!(list   = drmMalloc(res.count * sizeof(*list))))
         return NULL;
-    if (!(retval = drmMalloc(res.count * sizeof(*retval)))) {
-        drmFree(list);
-        return NULL;
-    }
+    if (!(retval = drmMalloc(res.count * sizeof(*retval))))
+        goto err_free_list;
 
     res.contexts = list;
     if (drmIoctl(fd, DRM_IOCTL_RES_CTX, &res))
-        return NULL;
+        goto err_free_context;
 
     for (i = 0; i < res.count; i++)
         retval[i] = list[i].handle;
@@ -1538,6 +1538,12 @@ drm_context_t *drmGetReservedContextList(int fd, int *count)
 
     *count = res.count;
     return retval;
+
+err_free_list:
+    drmFree(list);
+err_free_context:
+    drmFree(retval);
+    return NULL;
 }
 
 void drmFreeReservedContextList(drm_context_t *pt)
@@ -2886,6 +2892,50 @@ char *drmGetRenderDeviceNameFromFd(int fd)
     return drmGetMinorNameForFD(fd, DRM_NODE_RENDER);
 }
 
+#ifdef __linux__
+static char * DRM_PRINTFLIKE(2, 3)
+sysfs_uevent_get(const char *path, const char *fmt, ...)
+{
+    char filename[PATH_MAX + 1], *key, *line = NULL, *value = NULL;
+    size_t size = 0, len;
+    ssize_t num;
+    va_list ap;
+    FILE *fp;
+
+    va_start(ap, fmt);
+    num = vasprintf(&key, fmt, ap);
+    va_end(ap);
+    len = num;
+
+    snprintf(filename, sizeof(filename), "%s/uevent", path);
+
+    fp = fopen(filename, "r");
+    if (!fp) {
+        free(key);
+        return NULL;
+    }
+
+    while ((num = getline(&line, &size, fp)) >= 0) {
+        if ((strncmp(line, key, len) == 0) && (line[len] == '=')) {
+            char *start = line + len + 1, *end = line + num - 1;
+
+            if (*end != '\n')
+                end++;
+
+            value = strndup(start, end - start);
+            break;
+        }
+    }
+
+    free(line);
+    fclose(fp);
+
+    free(key);
+
+    return value;
+}
+#endif
+
 static int drmParseSubsystemType(int maj, int min)
 {
 #ifdef __linux__
@@ -2906,6 +2956,15 @@ static int drmParseSubsystemType(int maj, int min)
     if (strncmp(name, "/pci", 4) == 0)
         return DRM_BUS_PCI;
 
+    if (strncmp(name, "/usb", 4) == 0)
+        return DRM_BUS_USB;
+
+    if (strncmp(name, "/platform", 9) == 0)
+        return DRM_BUS_PLATFORM;
+
+    if (strncmp(name, "/host1x", 7) == 0)
+        return DRM_BUS_HOST1X;
+
     return -EINVAL;
 #elif defined(__OpenBSD__)
     return DRM_BUS_PCI;
@@ -2918,32 +2977,21 @@ static int drmParseSubsystemType(int maj, int min)
 static int drmParsePciBusInfo(int maj, int min, drmPciBusInfoPtr info)
 {
 #ifdef __linux__
-    char path[PATH_MAX + 1];
-    char data[512 + 1];
-    char *str;
-    int domain, bus, dev, func;
-    int fd, ret;
+    unsigned int domain, bus, dev, func;
+    char path[PATH_MAX + 1], *value;
+    int num;
 
-    snprintf(path, PATH_MAX, "/sys/dev/char/%d:%d/device/uevent", maj, min);
-    fd = open(path, O_RDONLY);
-    if (fd < 0)
-        return -errno;
+    snprintf(path, sizeof(path), "/sys/dev/char/%d:%d/device", maj, min);
 
-    ret = read(fd, data, sizeof(data)-1);
-    close(fd);
-    if (ret < 0)
-        return -errno;
-    data[ret] = '\0';
+    value = sysfs_uevent_get(path, "PCI_SLOT_NAME");
+    if (!value)
+        return -ENOENT;
 
-#define TAG "PCI_SLOT_NAME="
-    str = strstr(data, TAG);
-    if (str == NULL)
-        return -EINVAL;
+    num = sscanf(value, "%04x:%02x:%02x.%1u", &domain, &bus, &dev, &func);
+    free(value);
 
-    if (sscanf(str, TAG "%04x:%02x:%02x.%1u",
-               &domain, &bus, &dev, &func) != 4)
+    if (num != 4)
         return -EINVAL;
-#undef TAG
 
     info->domain = domain;
     info->bus = bus;
@@ -2981,22 +3029,32 @@ static int drmParsePciBusInfo(int maj, int min, drmPciBusInfoPtr info)
 #endif
 }
 
-static int drmCompareBusInfo(drmDevicePtr a, drmDevicePtr b)
+int drmDevicesEqual(drmDevicePtr a, drmDevicePtr b)
 {
     if (a == NULL || b == NULL)
-        return -1;
+        return 0;
 
     if (a->bustype != b->bustype)
-        return -1;
+        return 0;
 
     switch (a->bustype) {
     case DRM_BUS_PCI:
-        return memcmp(a->businfo.pci, b->businfo.pci, sizeof(drmPciBusInfo));
+        return memcmp(a->businfo.pci, b->businfo.pci, sizeof(drmPciBusInfo)) == 0;
+
+    case DRM_BUS_USB:
+        return memcmp(a->businfo.usb, b->businfo.usb, sizeof(drmUsbBusInfo)) == 0;
+
+    case DRM_BUS_PLATFORM:
+        return memcmp(a->businfo.platform, b->businfo.platform, sizeof(drmPlatformBusInfo)) == 0;
+
+    case DRM_BUS_HOST1X:
+        return memcmp(a->businfo.host1x, b->businfo.host1x, sizeof(drmHost1xBusInfo)) == 0;
+
     default:
         break;
     }
 
-    return -1;
+    return 0;
 }
 
 static int drmGetNodeType(const char *name)
@@ -3136,11 +3194,55 @@ static int drmParsePciDeviceInfo(int maj, int min,
 #endif
 }
 
+static void drmFreePlatformDevice(drmDevicePtr device)
+{
+    if (device->deviceinfo.platform) {
+        if (device->deviceinfo.platform->compatible) {
+            char **compatible = device->deviceinfo.platform->compatible;
+
+            while (*compatible) {
+                free(*compatible);
+                compatible++;
+            }
+
+            free(device->deviceinfo.platform->compatible);
+        }
+    }
+}
+
+static void drmFreeHost1xDevice(drmDevicePtr device)
+{
+    if (device->deviceinfo.host1x) {
+        if (device->deviceinfo.host1x->compatible) {
+            char **compatible = device->deviceinfo.host1x->compatible;
+
+            while (*compatible) {
+                free(*compatible);
+                compatible++;
+            }
+
+            free(device->deviceinfo.host1x->compatible);
+        }
+    }
+}
+
 void drmFreeDevice(drmDevicePtr *device)
 {
     if (device == NULL)
         return;
 
+    if (*device) {
+        switch ((*device)->bustype) {
+        case DRM_BUS_PLATFORM:
+            drmFreePlatformDevice(*device);
+            break;
+
+        case DRM_BUS_HOST1X:
+            drmFreeHost1xDevice(*device);
+            break;
+        }
+    }
+
     free(*device);
     *device = NULL;
 }
@@ -3235,6 +3337,327 @@ free_device:
     return ret;
 }
 
+static int drmParseUsbBusInfo(int maj, int min, drmUsbBusInfoPtr info)
+{
+#ifdef __linux__
+    char path[PATH_MAX + 1], *value;
+    unsigned int bus, dev;
+    int ret;
+
+    snprintf(path, sizeof(path), "/sys/dev/char/%d:%d/device", maj, min);
+
+    value = sysfs_uevent_get(path, "BUSNUM");
+    if (!value)
+        return -ENOENT;
+
+    ret = sscanf(value, "%03u", &bus);
+    free(value);
+
+    if (ret <= 0)
+        return -errno;
+
+    value = sysfs_uevent_get(path, "DEVNUM");
+    if (!value)
+        return -ENOENT;
+
+    ret = sscanf(value, "%03u", &dev);
+    free(value);
+
+    if (ret <= 0)
+        return -errno;
+
+    info->bus = bus;
+    info->dev = dev;
+
+    return 0;
+#else
+#warning "Missing implementation of drmParseUsbBusInfo"
+    return -EINVAL;
+#endif
+}
+
+static int drmParseUsbDeviceInfo(int maj, int min, drmUsbDeviceInfoPtr info)
+{
+#ifdef __linux__
+    char path[PATH_MAX + 1], *value;
+    unsigned int vendor, product;
+    int ret;
+
+    snprintf(path, sizeof(path), "/sys/dev/char/%d:%d/device", maj, min);
+
+    value = sysfs_uevent_get(path, "PRODUCT");
+    if (!value)
+        return -ENOENT;
+
+    ret = sscanf(value, "%x/%x", &vendor, &product);
+    free(value);
+
+    if (ret <= 0)
+        return -errno;
+
+    info->vendor = vendor;
+    info->product = product;
+
+    return 0;
+#else
+#warning "Missing implementation of drmParseUsbDeviceInfo"
+    return -EINVAL;
+#endif
+}
+
+static int drmProcessUsbDevice(drmDevicePtr *device, const char *node,
+                               int node_type, int maj, int min,
+                               bool fetch_deviceinfo, uint32_t flags)
+{
+    drmDevicePtr dev;
+    char *ptr;
+    int ret;
+
+    dev = drmDeviceAlloc(node_type, node, sizeof(drmUsbBusInfo),
+                         sizeof(drmUsbDeviceInfo), &ptr);
+    if (!dev)
+        return -ENOMEM;
+
+    dev->bustype = DRM_BUS_USB;
+
+    dev->businfo.usb = (drmUsbBusInfoPtr)ptr;
+
+    ret = drmParseUsbBusInfo(maj, min, dev->businfo.usb);
+    if (ret < 0)
+        goto free_device;
+
+    if (fetch_deviceinfo) {
+        ptr += sizeof(drmUsbBusInfo);
+        dev->deviceinfo.usb = (drmUsbDeviceInfoPtr)ptr;
+
+        ret = drmParseUsbDeviceInfo(maj, min, dev->deviceinfo.usb);
+        if (ret < 0)
+            goto free_device;
+    }
+
+    *device = dev;
+
+    return 0;
+
+free_device:
+    free(dev);
+    return ret;
+}
+
+static int drmParsePlatformBusInfo(int maj, int min, drmPlatformBusInfoPtr info)
+{
+#ifdef __linux__
+    char path[PATH_MAX + 1], *name;
+
+    snprintf(path, sizeof(path), "/sys/dev/char/%d:%d/device", maj, min);
+
+    name = sysfs_uevent_get(path, "OF_FULLNAME");
+    if (!name)
+        return -ENOENT;
+
+    strncpy(info->fullname, name, DRM_PLATFORM_DEVICE_NAME_LEN);
+    info->fullname[DRM_PLATFORM_DEVICE_NAME_LEN - 1] = '\0';
+    free(name);
+
+    return 0;
+#else
+#warning "Missing implementation of drmParsePlatformBusInfo"
+    return -EINVAL;
+#endif
+}
+
+static int drmParsePlatformDeviceInfo(int maj, int min,
+                                      drmPlatformDeviceInfoPtr info)
+{
+#ifdef __linux__
+    char path[PATH_MAX + 1], *value;
+    unsigned int count, i;
+    int err;
+
+    snprintf(path, sizeof(path), "/sys/dev/char/%d:%d/device", maj, min);
+
+    value = sysfs_uevent_get(path, "OF_COMPATIBLE_N");
+    if (!value)
+        return -ENOENT;
+
+    sscanf(value, "%u", &count);
+    free(value);
+
+    info->compatible = calloc(count + 1, sizeof(*info->compatible));
+    if (!info->compatible)
+        return -ENOMEM;
+
+    for (i = 0; i < count; i++) {
+        value = sysfs_uevent_get(path, "OF_COMPATIBLE_%u", i);
+        if (!value) {
+            err = -ENOENT;
+            goto free;
+        }
+
+        info->compatible[i] = value;
+    }
+
+    return 0;
+
+free:
+    while (i--)
+        free(info->compatible[i]);
+
+    free(info->compatible);
+    return err;
+#else
+#warning "Missing implementation of drmParsePlatformDeviceInfo"
+    return -EINVAL;
+#endif
+}
+
+static int drmProcessPlatformDevice(drmDevicePtr *device,
+                                    const char *node, int node_type,
+                                    int maj, int min, bool fetch_deviceinfo,
+                                    uint32_t flags)
+{
+    drmDevicePtr dev;
+    char *ptr;
+    int ret;
+
+    dev = drmDeviceAlloc(node_type, node, sizeof(drmPlatformBusInfo),
+                         sizeof(drmPlatformDeviceInfo), &ptr);
+    if (!dev)
+        return -ENOMEM;
+
+    dev->bustype = DRM_BUS_PLATFORM;
+
+    dev->businfo.platform = (drmPlatformBusInfoPtr)ptr;
+
+    ret = drmParsePlatformBusInfo(maj, min, dev->businfo.platform);
+    if (ret < 0)
+        goto free_device;
+
+    if (fetch_deviceinfo) {
+        ptr += sizeof(drmPlatformBusInfo);
+        dev->deviceinfo.platform = (drmPlatformDeviceInfoPtr)ptr;
+
+        ret = drmParsePlatformDeviceInfo(maj, min, dev->deviceinfo.platform);
+        if (ret < 0)
+            goto free_device;
+    }
+
+    *device = dev;
+
+    return 0;
+
+free_device:
+    free(dev);
+    return ret;
+}
+
+static int drmParseHost1xBusInfo(int maj, int min, drmHost1xBusInfoPtr info)
+{
+#ifdef __linux__
+    char path[PATH_MAX + 1], *name;
+
+    snprintf(path, sizeof(path), "/sys/dev/char/%d:%d/device", maj, min);
+
+    name = sysfs_uevent_get(path, "OF_FULLNAME");
+    if (!name)
+        return -ENOENT;
+
+    strncpy(info->fullname, name, DRM_HOST1X_DEVICE_NAME_LEN);
+    info->fullname[DRM_HOST1X_DEVICE_NAME_LEN - 1] = '\0';
+    free(name);
+
+    return 0;
+#else
+#warning "Missing implementation of drmParseHost1xBusInfo"
+    return -EINVAL;
+#endif
+}
+
+static int drmParseHost1xDeviceInfo(int maj, int min,
+                                    drmHost1xDeviceInfoPtr info)
+{
+#ifdef __linux__
+    char path[PATH_MAX + 1], *value;
+    unsigned int count, i;
+    int err;
+
+    snprintf(path, sizeof(path), "/sys/dev/char/%d:%d/device", maj, min);
+
+    value = sysfs_uevent_get(path, "OF_COMPATIBLE_N");
+    if (!value)
+        return -ENOENT;
+
+    sscanf(value, "%u", &count);
+    free(value);
+
+    info->compatible = calloc(count + 1, sizeof(*info->compatible));
+    if (!info->compatible)
+        return -ENOMEM;
+
+    for (i = 0; i < count; i++) {
+        value = sysfs_uevent_get(path, "OF_COMPATIBLE_%u", i);
+        if (!value) {
+            err = -ENOENT;
+            goto free;
+        }
+
+        info->compatible[i] = value;
+    }
+
+    return 0;
+
+free:
+    while (i--)
+        free(info->compatible[i]);
+
+    free(info->compatible);
+    return err;
+#else
+#warning "Missing implementation of drmParseHost1xDeviceInfo"
+    return -EINVAL;
+#endif
+}
+
+static int drmProcessHost1xDevice(drmDevicePtr *device,
+                                  const char *node, int node_type,
+                                  int maj, int min, bool fetch_deviceinfo,
+                                  uint32_t flags)
+{
+    drmDevicePtr dev;
+    char *ptr;
+    int ret;
+
+    dev = drmDeviceAlloc(node_type, node, sizeof(drmHost1xBusInfo),
+                         sizeof(drmHost1xDeviceInfo), &ptr);
+    if (!dev)
+        return -ENOMEM;
+
+    dev->bustype = DRM_BUS_HOST1X;
+
+    dev->businfo.host1x = (drmHost1xBusInfoPtr)ptr;
+
+    ret = drmParseHost1xBusInfo(maj, min, dev->businfo.host1x);
+    if (ret < 0)
+        goto free_device;
+
+    if (fetch_deviceinfo) {
+        ptr += sizeof(drmHost1xBusInfo);
+        dev->deviceinfo.host1x = (drmHost1xDeviceInfoPtr)ptr;
+
+        ret = drmParseHost1xDeviceInfo(maj, min, dev->deviceinfo.host1x);
+        if (ret < 0)
+            goto free_device;
+    }
+
+    *device = dev;
+
+    return 0;
+
+free_device:
+    free(dev);
+    return ret;
+}
+
 /* Consider devices located on the same bus as duplicate and fold the respective
  * entries into a single one.
  *
@@ -3246,7 +3669,7 @@ static void drmFoldDuplicatedDevices(drmDevicePtr local_devices[], int count)
 
     for (i = 0; i < count; i++) {
         for (j = i + 1; j < count; j++) {
-            if (drmCompareBusInfo(local_devices[i], local_devices[j]) == 0) {
+            if (drmDevicesEqual(local_devices[i], local_devices[j])) {
                 local_devices[i]->available_nodes |= local_devices[j]->available_nodes;
                 node_type = log2(local_devices[j]->available_nodes);
                 memcpy(local_devices[i]->nodes[node_type],
@@ -3410,6 +3833,28 @@ int drmGetDevice2(int fd, uint32_t flags, drmDevicePtr *device)
                 continue;
 
             break;
+
+        case DRM_BUS_USB:
+            ret = drmProcessUsbDevice(&d, node, node_type, maj, min, true, flags);
+            if (ret)
+                continue;
+
+            break;
+
+        case DRM_BUS_PLATFORM:
+            ret = drmProcessPlatformDevice(&d, node, node_type, maj, min, true, flags);
+            if (ret)
+                continue;
+
+            break;
+
+        case DRM_BUS_HOST1X:
+            ret = drmProcessHost1xDevice(&d, node, node_type, maj, min, true, flags);
+            if (ret)
+                continue;
+
+            break;
+
         default:
             continue;
         }
@@ -3541,6 +3986,31 @@ int drmGetDevices2(uint32_t flags, drmDevicePtr devices[], int max_devices)
                 continue;
 
             break;
+
+        case DRM_BUS_USB:
+            ret = drmProcessUsbDevice(&device, node, node_type, maj, min,
+                                      devices != NULL, flags);
+            if (ret)
+                goto free_devices;
+
+            break;
+
+        case DRM_BUS_PLATFORM:
+            ret = drmProcessPlatformDevice(&device, node, node_type, maj, min,
+                                           devices != NULL, flags);
+            if (ret)
+                goto free_devices;
+
+            break;
+
+        case DRM_BUS_HOST1X:
+            ret = drmProcessHost1xDevice(&device, node, node_type, maj, min,
+                                         devices != NULL, flags);
+            if (ret)
+                goto free_devices;
+
+            break;
+
         default:
             continue;
         }
@@ -3609,13 +4079,8 @@ char *drmGetDeviceNameFromFd2(int fd)
 {
 #ifdef __linux__
     struct stat sbuf;
-    char *device_name = NULL;
+    char path[PATH_MAX + 1], *value;
     unsigned int maj, min;
-    FILE *f;
-    char buf[512];
-    static const char match[9] = "\nDEVNAME=";
-    size_t expected = 1;
-
 
     if (fstat(fd, &sbuf))
         return NULL;
@@ -3626,30 +4091,16 @@ char *drmGetDeviceNameFromFd2(int fd)
     if (maj != DRM_MAJOR || !S_ISCHR(sbuf.st_mode))
         return NULL;
 
-    snprintf(buf, sizeof(buf), "/sys/dev/char/%d:%d/uevent", maj, min);
-    if (!(f = fopen(buf, "r")))
-        return NULL;
+    snprintf(path, sizeof(path), "/sys/dev/char/%d:%d", maj, min);
 
-    while (expected < sizeof(match)) {
-        int c = getc(f);
-
-        if (c == EOF) {
-            fclose(f);
-            return NULL;
-        } else if (c == match[expected] )
-            expected++;
-        else
-            expected = 0;
-    }
+    value = sysfs_uevent_get(path, "DEVNAME");
+    if (!value)
+        return NULL;
 
-    strcpy(buf, "/dev/");
-    if (fgets(buf + 5, sizeof(buf) - 5, f)) {
-        buf[strcspn(buf, "\n")] = '\0';
-        device_name = strdup(buf);
-    }
+    snprintf(path, sizeof(path), "/dev/%s", value);
+    free(value);
 
-    fclose(f);
-    return device_name;
+    return strdup(path);
 #else
     struct stat      sbuf;
     char             node[PATH_MAX + 1];