drm/amdgpu: Remove nbiov7.9 replay count reporting

[ Upstream commit 0f566f0 ]

Direct pcie replay count reporting is not available on nbio v7.9.
Reporting is done through firmware.

Signed-off-by: Lijo Lazar <[email protected]>
Acked-by: Mangesh Gadre <[email protected]>
Reviewed-by: Asad Kamal <[email protected]>
Fixes: 50709d1 ("drm/amdgpu: Add pci replay count to nbio v7.9")
Signed-off-by: Alex Deucher <[email protected]>
Signed-off-by: Sasha Levin <[email protected]>

Author: Lijo Lazar

drivers/gpu/drm/amd/amdgpu/nbio_v7_9.c

@@ -31,9 +31,6 @@
 
 #define NPS_MODE_MASK 0x000000FFL
 
-/* Core 0 Port 0 counter */
-#define smnPCIEP_NAK_COUNTER 0x1A340218
-
 static void nbio_v7_9_remap_hdp_registers(struct amdgpu_device *adev)
 {
 	WREG32_SOC15(NBIO, 0, regBIF_BX0_REMAP_HDP_MEM_FLUSH_CNTL,
@@ -467,22 +464,6 @@ static void nbio_v7_9_init_registers(struct amdgpu_device *adev)
 	}
 }
 
-static u64 nbio_v7_9_get_pcie_replay_count(struct amdgpu_device *adev)
-{
-	u32 val, nak_r, nak_g;
-
-	if (adev->flags & AMD_IS_APU)
-		return 0;
-
-	/* Get the number of NAKs received and generated */
-	val = RREG32_PCIE(smnPCIEP_NAK_COUNTER);
-	nak_r = val & 0xFFFF;
-	nak_g = val >> 16;
-
-	/* Add the total number of NAKs, i.e the number of replays */
-	return (nak_r + nak_g);
-}
-
 #define MMIO_REG_HOLE_OFFSET 0x1A000
 
 static void nbio_v7_9_set_reg_remap(struct amdgpu_device *adev)
@@ -524,7 +505,6 @@ const struct amdgpu_nbio_funcs nbio_v7_9_funcs = {
 	.get_memory_partition_mode = nbio_v7_9_get_memory_partition_mode,
 	.is_nps_switch_requested = nbio_v7_9_is_nps_switch_requested,
 	.init_registers = nbio_v7_9_init_registers,
-	.get_pcie_replay_count = nbio_v7_9_get_pcie_replay_count,
 	.set_reg_remap = nbio_v7_9_set_reg_remap,
 };