From: Ben Widawsky <benjamin.widawsky@intel.com>
Date: Tue, 1 Apr 2014 23:31:07 +0000 (-0700)
Subject: drm/i915/bdw: Expand FADD to 64bit
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=13ffadd1f9fa2e19ecb054b063887dcd62dde2be;p=linux-beck.git

drm/i915/bdw: Expand FADD to 64bit

For error state, like the recent modification to ACTHD, FADD also gets
an upper dword. This is useful for debug to make sure the fetch address
and head are similar.

Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
---

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 508bc86b08a1..0c10b7bd0727 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -359,7 +359,7 @@ struct drm_i915_error_state {
 		u64 bbaddr;
 		u64 acthd;
 		u32 fault_reg;
-		u32 faddr;
+		u64 faddr;
 		u32 rc_psmi; /* sleep state */
 		u32 semaphore_mboxes[I915_NUM_RINGS - 1];
 
diff --git a/drivers/gpu/drm/i915/i915_gpu_error.c b/drivers/gpu/drm/i915/i915_gpu_error.c
index 12f1d43b2d68..1005af020a8e 100644
--- a/drivers/gpu/drm/i915/i915_gpu_error.c
+++ b/drivers/gpu/drm/i915/i915_gpu_error.c
@@ -257,7 +257,8 @@ static void i915_ring_error_state(struct drm_i915_error_state_buf *m,
 		err_printf(m, "  INSTPS: 0x%08x\n", ring->instps);
 	}
 	err_printf(m, "  INSTPM: 0x%08x\n", ring->instpm);
-	err_printf(m, "  FADDR: 0x%08x\n", ring->faddr);
+	err_printf(m, "  FADDR: 0x%08x %08x\n", upper_32_bits(ring->faddr),
+		   lower_32_bits(ring->faddr));
 	if (INTEL_INFO(dev)->gen >= 6) {
 		err_printf(m, "  RC PSMI: 0x%08x\n", ring->rc_psmi);
 		err_printf(m, "  FAULT_REG: 0x%08x\n", ring->fault_reg);
@@ -781,8 +782,10 @@ static void i915_record_ring_state(struct drm_device *dev,
 		ering->instdone = I915_READ(RING_INSTDONE(ring->mmio_base));
 		ering->instps = I915_READ(RING_INSTPS(ring->mmio_base));
 		ering->bbaddr = I915_READ(RING_BBADDR(ring->mmio_base));
-		if (INTEL_INFO(dev)->gen >= 8)
+		if (INTEL_INFO(dev)->gen >= 8) {
+			ering->faddr |= (u64) I915_READ(RING_DMA_FADD_UDW(ring->mmio_base)) << 32;
 			ering->bbaddr |= (u64) I915_READ(RING_BBADDR_UDW(ring->mmio_base)) << 32;
+		}
 		ering->bbstate = I915_READ(RING_BBSTATE(ring->mmio_base));
 	} else {
 		ering->faddr = I915_READ(DMA_FADD_I8XX);
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 1f927a53fe19..393f93ecd41a 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -835,6 +835,7 @@ enum punit_power_well {
 #define RING_INSTDONE(base)	((base)+0x6c)
 #define RING_INSTPS(base)	((base)+0x70)
 #define RING_DMA_FADD(base)	((base)+0x78)
+#define RING_DMA_FADD_UDW(base)	((base)+0x60) /* gen8+ */
 #define RING_INSTPM(base)	((base)+0xc0)
 #define RING_MI_MODE(base)	((base)+0x9c)
 #define INSTPS		0x02070 /* 965+ only */