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-rw-r--r--shared-core/i915_dma.c56
-rw-r--r--shared-core/i915_drm.h29
2 files changed, 85 insertions, 0 deletions
diff --git a/shared-core/i915_dma.c b/shared-core/i915_dma.c
index 3373f1b0..943a1772 100644
--- a/shared-core/i915_dma.c
+++ b/shared-core/i915_dma.c
@@ -775,6 +775,61 @@ static int i915_setparam(DRM_IOCTL_ARGS)
return 0;
}
+drm_i915_mmio_entry_t mmio_table[] = {
+ [MMIO_REGS_PS_DEPTH_COUNT] = {
+ I915_MMIO_MAY_READ|I915_MMIO_MAY_WRITE,
+ 0x2350,
+ 8
+ }
+};
+
+static int mmio_table_size = sizeof(mmio_table)/sizeof(drm_i915_mmio_entry_t);
+
+static int i915_mmio(DRM_IOCTL_ARGS)
+{
+ char buf[32];
+ DRM_DEVICE;
+ drm_i915_private_t *dev_priv = dev->dev_private;
+ drm_i915_mmio_entry_t *e;
+ drm_i915_mmio_t mmio;
+ void __iomem *base;
+ if (!dev_priv) {
+ DRM_ERROR("%s called with no initialization\n", __FUNCTION__);
+ return DRM_ERR(EINVAL);
+ }
+ DRM_COPY_FROM_USER_IOCTL(mmio, (drm_i915_setparam_t __user *) data,
+ sizeof(mmio));
+
+ if (mmio.reg >= mmio_table_size)
+ return DRM_ERR(EINVAL);
+
+ e = &mmio_table[mmio.reg];
+ base = dev_priv->mmio_map->handle + e->offset;
+
+ switch (mmio.read_write) {
+ case I915_MMIO_READ:
+ if (!(e->flag & I915_MMIO_MAY_READ))
+ return DRM_ERR(EINVAL);
+ memcpy_fromio(buf, base, e->size);
+ if (DRM_COPY_TO_USER(mmio.data, buf, e->size)) {
+ DRM_ERROR("DRM_COPY_TO_USER failed\n");
+ return DRM_ERR(EFAULT);
+ }
+ break;
+
+ case I915_MMIO_WRITE:
+ if (!(e->flag & I915_MMIO_MAY_WRITE))
+ return DRM_ERR(EINVAL);
+ if(DRM_COPY_FROM_USER(buf, mmio.data, e->size)) {
+ DRM_ERROR("DRM_COPY_TO_USER failed\n");
+ return DRM_ERR(EFAULT);
+ }
+ memcpy_toio(base, buf, e->size);
+ break;
+ }
+ return 0;
+}
+
int i915_driver_load(drm_device_t *dev, unsigned long flags)
{
/* i915 has 4 more counters */
@@ -824,6 +879,7 @@ drm_ioctl_desc_t i915_ioctls[] = {
[DRM_IOCTL_NR(DRM_I915_SET_VBLANK_PIPE)] = { i915_vblank_pipe_set, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY },
[DRM_IOCTL_NR(DRM_I915_GET_VBLANK_PIPE)] = { i915_vblank_pipe_get, DRM_AUTH },
[DRM_IOCTL_NR(DRM_I915_VBLANK_SWAP)] = {i915_vblank_swap, DRM_AUTH},
+ [DRM_IOCTL_NR(DRM_I915_MMIO)] = {i915_mmio, DRM_AUTH},
};
int i915_max_ioctl = DRM_ARRAY_SIZE(i915_ioctls);
diff --git a/shared-core/i915_drm.h b/shared-core/i915_drm.h
index 9eec109e..22a81d14 100644
--- a/shared-core/i915_drm.h
+++ b/shared-core/i915_drm.h
@@ -152,6 +152,7 @@ typedef struct _drm_i915_sarea {
#define DRM_I915_SET_VBLANK_PIPE 0x0d
#define DRM_I915_GET_VBLANK_PIPE 0x0e
#define DRM_I915_VBLANK_SWAP 0x0f
+#define DRM_I915_MMIO 0x10
#define DRM_IOCTL_I915_INIT DRM_IOW( DRM_COMMAND_BASE + DRM_I915_INIT, drm_i915_init_t)
#define DRM_IOCTL_I915_FLUSH DRM_IO ( DRM_COMMAND_BASE + DRM_I915_FLUSH)
@@ -273,4 +274,32 @@ typedef struct drm_i915_vblank_swap {
unsigned int sequence;
} drm_i915_vblank_swap_t;
+#define I915_MMIO_READ 0
+#define I915_MMIO_WRITE 1
+
+#define I915_MMIO_MAY_READ 0x1
+#define I915_MMIO_MAY_WRITE 0x2
+
+#define MMIO_REGS_IA_PRIMATIVES_COUNT 0
+#define MMIO_REGS_IA_VERTICES_COUNT 1
+#define MMIO_REGS_VS_INVOCATION_COUNT 2
+#define MMIO_REGS_GS_PRIMITIVES_COUNT 3
+#define MMIO_REGS_GS_INVOCATION_COUNT 4
+#define MMIO_REGS_CL_PRIMITIVES_COUNT 5
+#define MMIO_REGS_CL_INVOCATION_COUNT 6
+#define MMIO_REGS_PS_INVOCATION_COUNT 7
+#define MMIO_REGS_PS_DEPTH_COUNT 8
+
+typedef struct drm_i915_mmio_entry {
+ unsigned int flag;
+ unsigned int offset;
+ unsigned int size;
+}drm_i915_mmio_entry_t;
+
+typedef struct drm_i915_mmio {
+ unsigned int read_write:1;
+ unsigned int reg:31;
+ void __user *data;
+} drm_i915_mmio_t;
+
#endif /* _I915_DRM_H_ */