drm/amdgpu/trace: Add tracepoints to MMIO read/writes

Add tracepoints to the MMIO read/write so we can log
MMIO traffic.

Signed-off-by: Tom St Denis <tom.stdenis@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 8 insertions, 4 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index aa146452b4f6..df0953d3b1ab 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -35,6 +35,7 @@
 #include <linux/vga_switcheroo.h>
 #include <linux/efi.h>
 #include "amdgpu.h"
+#include "amdgpu_trace.h"
 #include "amdgpu_i2c.h"
 #include "atom.h"
 #include "amdgpu_atombios.h"
@@ -79,24 +80,27 @@ bool amdgpu_device_is_px(struct drm_device *dev)
 uint32_t amdgpu_mm_rreg(struct amdgpu_device *adev, uint32_t reg,
                         bool always_indirect)
 {
+        uint32_t ret;
+
         if ((reg * 4) < adev->rmmio_size && !always_indirect)
-                return readl(((void __iomem *)adev->rmmio) + (reg * 4));
+                ret = readl(((void __iomem *)adev->rmmio) + (reg * 4));
         else {
                 unsigned long flags;
-                uint32_t ret;
 
                 spin_lock_irqsave(&adev->mmio_idx_lock, flags);
                 writel((reg * 4), ((void __iomem *)adev->rmmio) + (mmMM_INDEX * 4));
                 ret = readl(((void __iomem *)adev->rmmio) + (mmMM_DATA * 4));
                 spin_unlock_irqrestore(&adev->mmio_idx_lock, flags);
-
-                return ret;
         }
+        trace_amdgpu_mm_rreg(adev->pdev->device, reg, ret);
+        return ret;
 }
 
 void amdgpu_mm_wreg(struct amdgpu_device *adev, uint32_t reg, uint32_t v,
                     bool always_indirect)
 {
+        trace_amdgpu_mm_wreg(adev->pdev->device, reg, v);
+        
         if ((reg * 4) < adev->rmmio_size && !always_indirect)
                 writel(v, ((void __iomem *)adev->rmmio) + (reg * 4));
         else {