@@ -85,6 +85,7 @@
#include "intel_gvt.h"
#include "intel_memory_region.h"
#include "intel_pm.h"
+#include "intel_sideband.h"
#include "vlv_suspend.h"
static struct drm_driver driver;
@@ -737,6 +738,8 @@ static int i915_driver_hw_probe(struct drm_i915_private *dev_priv)
*/
intel_dram_detect(dev_priv);
+ intel_pcode_init(dev_priv);
+
intel_bw_init_hw(dev_priv);
return 0;
@@ -9226,6 +9226,9 @@ enum {
#define GEN9_SAGV_DISABLE 0x0
#define GEN9_SAGV_IS_DISABLED 0x1
#define GEN9_SAGV_ENABLE 0x3
+#define DG1_PCODE_STATUS 0x7E
+#define DG1_CHECK_UNCORE_INIT_STATUS 0x0
+#define DG1_UNCORE_INIT_COMPLETE 0x1
#define GEN12_PCODE_READ_SAGV_BLOCK_TIME_US 0x23
#define GEN6_PCODE_DATA _MMIO(0x138128)
#define GEN6_PCODE_FREQ_IA_RATIO_SHIFT 8
@@ -543,3 +543,18 @@ int skl_pcode_request(struct drm_i915_private *i915, u32 mbox, u32 request,
return ret ? ret : status;
#undef COND
}
+
+void intel_pcode_init(struct drm_i915_private *i915)
+{
+ int ret;
+
+ if (!IS_DGFX(i915))
+ return;
+
+ ret = skl_pcode_request(i915, DG1_PCODE_STATUS,
+ DG1_CHECK_UNCORE_INIT_STATUS,
+ DG1_UNCORE_INIT_COMPLETE,
+ DG1_UNCORE_INIT_COMPLETE, 50);
+ if (ret)
+ drm_err(&i915->drm, "Pcode did not report uncore initialization completion!\n");
+}
@@ -138,4 +138,6 @@ int sandybridge_pcode_write_timeout(struct drm_i915_private *i915, u32 mbox,
int skl_pcode_request(struct drm_i915_private *i915, u32 mbox, u32 request,
u32 reply_mask, u32 reply, int timeout_base_ms);
+void intel_pcode_init(struct drm_i915_private *i915);
+
#endif /* _INTEL_SIDEBAND_H */