_DRM_KERNEL = 0x08, /**< kernel requires access */
_DRM_WRITE_COMBINING = 0x10, /**< use write-combining if available */
_DRM_CONTAINS_LOCK = 0x20, /**< SHM page that contains lock */
- _DRM_REMOVABLE = 0x40 /**< Removable mapping */
+ _DRM_REMOVABLE = 0x40, /**< Removable mapping */
+ _DRM_DRIVER = 0x80 /**< Managed by driver */
};
struct drm_ctx_priv_map {
struct drm_wait_vblank_reply reply;
};
+typedef enum {
+ _DRM_PRE_MODESET = 1,
+ _DRM_POST_MODESET = 2,
+} drm_modeset_ctl_cmd_t;
+
+/**
+ * DRM_IOCTL_MODESET_CTL ioctl argument type
+ *
+ * \sa drmModesetCtl().
+ */
+typedef struct drm_modeset_ctl {
+ unsigned long arg;
+ drm_modeset_ctl_cmd_t cmd;
+} drm_modeset_ctl_t;
+
/**
* DRM_IOCTL_AGP_ENABLE ioctl argument type.
*
#define DRM_BO_FLAG_EXE (1ULL << 2)
/*
+ * All of the bits related to access mode
+ */
+#define DRM_BO_MASK_ACCESS (DRM_BO_FLAG_READ | DRM_BO_FLAG_WRITE | DRM_BO_FLAG_EXE)
+/*
* Status flags. Can be read to determine the actual state of a buffer.
* Can also be set in the buffer mask before validation.
*/
*/
#define DRM_BO_FLAG_NO_MOVE (1ULL << 8)
-/* Mask: Make sure the buffer is in cached memory when mapped
+/* Mask: Make sure the buffer is in cached memory when mapped. In conjunction
+ * with DRM_BO_FLAG_CACHED it also allows the buffer to be bound into the GART
+ * with unsnooped PTEs instead of snooped, by using chipset-specific cache
+ * flushing at bind time. A better name might be DRM_BO_FLAG_TT_UNSNOOPED,
+ * as the eviction to local memory (TTM unbind) on map is just a side effect
+ * to prevent aggressive cache prefetch from the GPU disturbing the cache
+ * management that the DRM is doing.
+ *
* Flags: Acknowledge.
* Buffers allocated with this flag should not be used for suballocators
* This type may have issues on CPUs with over-aggressive caching
#define DRM_BO_FLAG_MEM_PRIV4 (1ULL << 31)
/* We can add more of these now with a 64-bit flag type */
-/* Memory flag mask */
+/*
+ * This is a mask covering all of the memory type flags; easier to just
+ * use a single constant than a bunch of | values. It covers
+ * DRM_BO_FLAG_MEM_LOCAL through DRM_BO_FLAG_MEM_PRIV4
+ */
#define DRM_BO_MASK_MEM 0x00000000FF000000ULL
-#define DRM_BO_MASK_MEMTYPE 0x00000000FF0800A0ULL
-
+/*
+ * This adds all of the CPU-mapping options in with the memory
+ * type to label all bits which change how the page gets mapped
+ */
+#define DRM_BO_MASK_MEMTYPE (DRM_BO_MASK_MEM | \
+ DRM_BO_FLAG_CACHED_MAPPED | \
+ DRM_BO_FLAG_CACHED | \
+ DRM_BO_FLAG_MAPPABLE)
+
/* Driver-private flags */
#define DRM_BO_MASK_DRIVER 0xFFFF000000000000ULL
-/* Don't block on validate and map */
+/*
+ * Don't block on validate and map. Instead, return EBUSY.
+ */
#define DRM_BO_HINT_DONT_BLOCK 0x00000002
-/* Don't place this buffer on the unfenced list.*/
+/*
+ * Don't place this buffer on the unfenced list. This means
+ * that the buffer will not end up having a fence associated
+ * with it as a result of this operation
+ */
#define DRM_BO_HINT_DONT_FENCE 0x00000004
+/*
+ * Sleep while waiting for the operation to complete.
+ * Without this flag, the kernel will, instead, spin
+ * until this operation has completed. I'm not sure
+ * why you would ever want this, so please always
+ * provide DRM_BO_HINT_WAIT_LAZY to any operation
+ * which may block
+ */
#define DRM_BO_HINT_WAIT_LAZY 0x00000008
+/*
+ * The client has compute relocations refering to this buffer using the
+ * offset in the presumed_offset field. If that offset ends up matching
+ * where this buffer lands, the kernel is free to skip executing those
+ * relocations
+ */
+#define DRM_BO_HINT_PRESUMED_OFFSET 0x00000010
#define DRM_BO_INIT_MAGIC 0xfe769812
#define DRM_BO_INIT_MAJOR 1
unsigned int desired_tile_stride;
unsigned int tile_info;
unsigned int pad64;
+ uint64_t presumed_offset;
};
struct drm_bo_create_req {
- uint64_t mask;
+ uint64_t flags;
uint64_t size;
uint64_t buffer_start;
unsigned int hint;
struct drm_bo_info_rep {
uint64_t flags;
- uint64_t mask;
+ uint64_t proposed_flags;
uint64_t size;
uint64_t offset;
uint64_t arg_handle;
#define DRM_IOCTL_BO_VERSION DRM_IOR(0xd6, struct drm_bo_version_arg)
+#define DRM_IOCTL_MODESET_CTL DRM_IOW(0xa0, drm_modeset_ctl_t)
+
/*@}*/
/**
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