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Diffstat (limited to 'nouveau/nouveau_device.c')
-rw-r--r--nouveau/nouveau_device.c194
1 files changed, 194 insertions, 0 deletions
diff --git a/nouveau/nouveau_device.c b/nouveau/nouveau_device.c
new file mode 100644
index 00000000..0982d3b6
--- /dev/null
+++ b/nouveau/nouveau_device.c
@@ -0,0 +1,194 @@
+/*
+ * Copyright 2007 Nouveau Project
+ *
+ * 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, 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 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
+ * THE AUTHORS 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.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <errno.h>
+
+#include "nouveau_private.h"
+
+#if NOUVEAU_DRM_HEADER_PATCHLEVEL != 15
+#error nouveau_drm.h does not match expected patchlevel, update libdrm.
+#endif
+
+int
+nouveau_device_open_existing(struct nouveau_device **dev, int close,
+ int fd, drm_context_t ctx)
+{
+ struct nouveau_device_priv *nvdev;
+ drmVersionPtr ver;
+ uint64_t value;
+ int ret;
+
+ if (!dev || *dev)
+ return -EINVAL;
+
+ ver = drmGetVersion(fd);
+ if (!ver || ver->version_patchlevel != NOUVEAU_DRM_HEADER_PATCHLEVEL)
+ return -EINVAL;
+ drmFreeVersion(ver);
+
+ nvdev = calloc(1, sizeof(*nvdev));
+ if (!nvdev)
+ return -ENOMEM;
+ nvdev->fd = fd;
+ nvdev->ctx = ctx;
+ nvdev->needs_close = close;
+
+ ret = drmCommandNone(nvdev->fd, DRM_NOUVEAU_CARD_INIT);
+ if (ret) {
+ nouveau_device_close((void *)&nvdev);
+ return ret;
+ }
+
+ ret = nouveau_device_get_param(&nvdev->base,
+ NOUVEAU_GETPARAM_VM_VRAM_BASE, &value);
+ if (ret) {
+ nouveau_device_close((void *)&nvdev);
+ return ret;
+ }
+ nvdev->base.vm_vram_base = value;
+
+ ret = nouveau_device_get_param(&nvdev->base,
+ NOUVEAU_GETPARAM_FB_SIZE, &value);
+ if (ret) {
+ nouveau_device_close((void *)&nvdev);
+ return ret;
+ }
+ nvdev->base.vm_vram_size = value;
+
+ ret = nouveau_device_get_param(&nvdev->base,
+ NOUVEAU_GETPARAM_AGP_SIZE, &value);
+ if (ret) {
+ nouveau_device_close((void *)&nvdev);
+ return ret;
+ }
+ nvdev->base.vm_gart_size = value;
+
+ ret = nouveau_bo_init(&nvdev->base);
+ if (ret) {
+ nouveau_device_close((void *)&nvdev);
+ return ret;
+ }
+
+ ret = nouveau_device_get_param(&nvdev->base,
+ NOUVEAU_GETPARAM_CHIPSET_ID, &value);
+ if (ret) {
+ nouveau_device_close((void *)&nvdev);
+ return ret;
+ }
+ nvdev->base.chipset = value;
+
+ *dev = &nvdev->base;
+ return 0;
+}
+
+int
+nouveau_device_open(struct nouveau_device **dev, const char *busid)
+{
+ drm_context_t ctx;
+ int fd, ret;
+
+ if (!dev || *dev)
+ return -EINVAL;
+
+ fd = drmOpen("nouveau", busid);
+ if (fd < 0)
+ return -EINVAL;
+
+ ret = drmCreateContext(fd, &ctx);
+ if (ret) {
+ drmClose(fd);
+ return ret;
+ }
+
+ ret = nouveau_device_open_existing(dev, 1, fd, ctx);
+ if (ret) {
+ drmDestroyContext(fd, ctx);
+ drmClose(fd);
+ return ret;
+ }
+
+ return 0;
+}
+
+void
+nouveau_device_close(struct nouveau_device **dev)
+{
+ struct nouveau_device_priv *nvdev;
+
+ if (!dev || !*dev)
+ return;
+ nvdev = nouveau_device(*dev);
+ *dev = NULL;
+
+ nouveau_bo_takedown(&nvdev->base);
+
+ if (nvdev->needs_close) {
+ drmDestroyContext(nvdev->fd, nvdev->ctx);
+ drmClose(nvdev->fd);
+ }
+ free(nvdev);
+}
+
+int
+nouveau_device_get_param(struct nouveau_device *dev,
+ uint64_t param, uint64_t *value)
+{
+ struct nouveau_device_priv *nvdev = nouveau_device(dev);
+ struct drm_nouveau_getparam g;
+ int ret;
+
+ if (!nvdev || !value)
+ return -EINVAL;
+
+ g.param = param;
+ ret = drmCommandWriteRead(nvdev->fd, DRM_NOUVEAU_GETPARAM,
+ &g, sizeof(g));
+ if (ret)
+ return ret;
+
+ *value = g.value;
+ return 0;
+}
+
+int
+nouveau_device_set_param(struct nouveau_device *dev,
+ uint64_t param, uint64_t value)
+{
+ struct nouveau_device_priv *nvdev = nouveau_device(dev);
+ struct drm_nouveau_setparam s;
+ int ret;
+
+ if (!nvdev)
+ return -EINVAL;
+
+ s.param = param;
+ s.value = value;
+ ret = drmCommandWriteRead(nvdev->fd, DRM_NOUVEAU_SETPARAM,
+ &s, sizeof(s));
+ if (ret)
+ return ret;
+
+ return 0;
+}
+