intel: Add a function for the new register read ioctl.

Reviewed-by: Ben Widawsky <ben@bwidawsk.net>

2 files changed, 21 insertions, 0 deletions

diff --git a/intel/intel_bufmgr.h b/intel/intel_bufmgr.h
index 2167e43b..8d7f2390 100644
--- a/intel/intel_bufmgr.h
+++ b/intel/intel_bufmgr.h
@@ -241,6 +241,9 @@ void drm_intel_decode_set_head_tail(struct drm_intel_decode *ctx,
 void drm_intel_decode_set_output_file(struct drm_intel_decode *ctx, FILE *out);
 void drm_intel_decode(struct drm_intel_decode *ctx);
 
+int drm_intel_reg_read(drm_intel_bufmgr *bufmgr,
+		       uint32_t offset,
+		       uint64_t *result);
 
 /** @{ Compatibility defines to keep old code building despite the symbol rename
  * from dri_* to drm_intel_*
diff --git a/intel/intel_bufmgr_gem.c b/intel/intel_bufmgr_gem.c
index ec64e0a3..0ea6260d 100644
--- a/intel/intel_bufmgr_gem.c
+++ b/intel/intel_bufmgr_gem.c
@@ -2947,6 +2947,24 @@ drm_intel_gem_context_destroy(drm_intel_context *ctx)
 	free(ctx);
 }
 
+int
+drm_intel_reg_read(drm_intel_bufmgr *bufmgr,
+		   uint32_t offset,
+		   uint64_t *result)
+{
+	drm_intel_bufmgr_gem *bufmgr_gem = (drm_intel_bufmgr_gem *)bufmgr;
+	struct drm_i915_reg_read reg_read;
+	int ret;
+
+	VG_CLEAR(reg_read);
+	reg_read.offset = offset;
+
+	ret = drmIoctl(bufmgr_gem->fd, DRM_IOCTL_I915_REG_READ, &reg_read);
+
+	*result = reg_read.val;
+	return ret;
+}
+
 
 /**
  * Annotate the given bo for use in aub dumping.