4 files changed, 39 insertions, 0 deletions

diff --git a/drivers/gpu/drm/radeon/cik.c b/drivers/gpu/drm/radeon/cik.c
index 3e670d344a20..e1db25e48688 100644
--- a/drivers/gpu/drm/radeon/cik.c
+++ b/drivers/gpu/drm/radeon/cik.c
@@ -141,6 +141,39 @@ static void cik_fini_cg(struct radeon_device *rdev);
 static void cik_enable_gui_idle_interrupt(struct radeon_device *rdev,
                                           bool enable);
 
+/**
+ * cik_get_allowed_info_register - fetch the register for the info ioctl
+ *
+ * @rdev: radeon_device pointer
+ * @reg: register offset in bytes
+ * @val: register value
+ *
+ * Returns 0 for success or -EINVAL for an invalid register
+ *
+ */
+int cik_get_allowed_info_register(struct radeon_device *rdev,
+                                  u32 reg, u32 *val)
+{
+        switch (reg) {
+        case GRBM_STATUS:
+        case GRBM_STATUS2:
+        case GRBM_STATUS_SE0:
+        case GRBM_STATUS_SE1:
+        case GRBM_STATUS_SE2:
+        case GRBM_STATUS_SE3:
+        case SRBM_STATUS:
+        case SRBM_STATUS2:
+        case (SDMA0_STATUS_REG + SDMA0_REGISTER_OFFSET):
+        case (SDMA0_STATUS_REG + SDMA1_REGISTER_OFFSET):
+        case UVD_STATUS:
+        /* TODO VCE */
+                *val = RREG32(reg);
+                return 0;
+        default:
+                return -EINVAL;
+        }
+}
+
 /* get temperature in millidegrees */
 int ci_get_temp(struct radeon_device *rdev)
 {
diff --git a/drivers/gpu/drm/radeon/cikd.h b/drivers/gpu/drm/radeon/cikd.h
index c648e1996dab..4870df898230 100644
--- a/drivers/gpu/drm/radeon/cikd.h
+++ b/drivers/gpu/drm/radeon/cikd.h
@@ -2088,6 +2088,8 @@
 #       define CLK_OD(x)                                ((x) << 6)
 #       define CLK_OD_MASK                              (0x1f << 6)
 
+#define UVD_STATUS                                      0xf6bc
+
 /* UVD clocks */
 
 #define CG_DCLK_CNTL                    0xC050009C
diff --git a/drivers/gpu/drm/radeon/radeon_asic.c b/drivers/gpu/drm/radeon/radeon_asic.c
index 21e5fe64f362..fafd8ce4d58f 100644
--- a/drivers/gpu/drm/radeon/radeon_asic.c
+++ b/drivers/gpu/drm/radeon/radeon_asic.c
@@ -2075,6 +2075,7 @@ static struct radeon_asic ci_asic = {
         .mc_wait_for_idle = &evergreen_mc_wait_for_idle,
         .get_xclk = &cik_get_xclk,
         .get_gpu_clock_counter = &cik_get_gpu_clock_counter,
+        .get_allowed_info_register = cik_get_allowed_info_register,
         .gart = {
                 .tlb_flush = &cik_pcie_gart_tlb_flush,
                 .get_page_entry = &rs600_gart_get_page_entry,
@@ -2187,6 +2188,7 @@ static struct radeon_asic kv_asic = {
         .mc_wait_for_idle = &evergreen_mc_wait_for_idle,
         .get_xclk = &cik_get_xclk,
         .get_gpu_clock_counter = &cik_get_gpu_clock_counter,
+        .get_allowed_info_register = cik_get_allowed_info_register,
         .gart = {
                 .tlb_flush = &cik_pcie_gart_tlb_flush,
                 .get_page_entry = &rs600_gart_get_page_entry,
diff --git a/drivers/gpu/drm/radeon/radeon_asic.h b/drivers/gpu/drm/radeon/radeon_asic.h
index f650bff863cd..cf0a90bb61ca 100644
--- a/drivers/gpu/drm/radeon/radeon_asic.h
+++ b/drivers/gpu/drm/radeon/radeon_asic.h
@@ -865,6 +865,8 @@ void cik_sdma_set_wptr(struct radeon_device *rdev,
                        struct radeon_ring *ring);
 int ci_get_temp(struct radeon_device *rdev);
 int kv_get_temp(struct radeon_device *rdev);
+int cik_get_allowed_info_register(struct radeon_device *rdev,
+                                  u32 reg, u32 *val);
 
 int ci_dpm_init(struct radeon_device *rdev);
 int ci_dpm_enable(struct radeon_device *rdev);