amdgpu/soc15: make the pcie index/data registers constant.

These don't seem to change at runtime, and the initialisers
are constant data. This could be improved by not selecting
the apu/non-apu path on each pcie read/write access.

Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/nbio_v6_1.c b/drivers/gpu/drm/amd/amdgpu/nbio_v6_1.c
index 045988b..7723d7b 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/nbio_v6_1.c
+++ b/drivers/gpu/drm/amd/amdgpu/nbio_v6_1.c
@@ -216,7 +216,10 @@ void nbio_v6_1_get_clockgating_state(struct amdgpu_device *adev, u32 *flags)
 }
 
 struct nbio_hdp_flush_reg nbio_v6_1_hdp_flush_reg;
-struct nbio_pcie_index_data nbio_v6_1_pcie_index_data;
+const struct nbio_pcie_index_data nbio_v6_1_pcie_index_data = {
+       .index_offset = SOC15_REG_OFFSET(NBIO, 0, mmPCIE_INDEX),
+       .data_offset = SOC15_REG_OFFSET(NBIO, 0, mmPCIE_DATA),
+};
 
 int nbio_v6_1_init(struct amdgpu_device *adev)
 {
@@ -235,9 +238,6 @@ int nbio_v6_1_init(struct amdgpu_device *adev)
        nbio_v6_1_hdp_flush_reg.ref_and_mask_sdma0 = BIF_BX_PF0_GPU_HDP_FLUSH_DONE__SDMA0_MASK;
        nbio_v6_1_hdp_flush_reg.ref_and_mask_sdma1 = BIF_BX_PF0_GPU_HDP_FLUSH_DONE__SDMA1_MASK;
 
-       nbio_v6_1_pcie_index_data.index_offset = SOC15_REG_OFFSET(NBIO, 0, mmPCIE_INDEX);
-       nbio_v6_1_pcie_index_data.data_offset = SOC15_REG_OFFSET(NBIO, 0, mmPCIE_DATA);
-
        return 0;
 }
 

diff --git a/drivers/gpu/drm/amd/amdgpu/nbio_v6_1.h b/drivers/gpu/drm/amd/amdgpu/nbio_v6_1.h
index 686e4b4..c5ca1e4 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/nbio_v6_1.h
+++ b/drivers/gpu/drm/amd/amdgpu/nbio_v6_1.h
@@ -27,7 +27,7 @@
 #include "soc15_common.h"
 
 extern struct nbio_hdp_flush_reg nbio_v6_1_hdp_flush_reg;
-extern struct nbio_pcie_index_data nbio_v6_1_pcie_index_data;
+extern const struct nbio_pcie_index_data nbio_v6_1_pcie_index_data;
 int nbio_v6_1_init(struct amdgpu_device *adev);
 u32 nbio_v6_1_get_atombios_scratch_regs(struct amdgpu_device *adev,
                                         uint32_t idx);

diff --git a/drivers/gpu/drm/amd/amdgpu/nbio_v7_0.c b/drivers/gpu/drm/amd/amdgpu/nbio_v7_0.c
index 11b70d6..b932b78 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/nbio_v7_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/nbio_v7_0.c
@@ -186,7 +186,10 @@ void nbio_v7_0_ih_control(struct amdgpu_device *adev)
 }
 
 struct nbio_hdp_flush_reg nbio_v7_0_hdp_flush_reg;
-struct nbio_pcie_index_data nbio_v7_0_pcie_index_data;
+const struct nbio_pcie_index_data nbio_v7_0_pcie_index_data = {
+       .index_offset = SOC15_REG_OFFSET(NBIO, 0, mmPCIE_INDEX2),
+       .data_offset = SOC15_REG_OFFSET(NBIO, 0, mmPCIE_DATA2)
+};
 
 int nbio_v7_0_init(struct amdgpu_device *adev)
 {
@@ -205,8 +208,5 @@ int nbio_v7_0_init(struct amdgpu_device *adev)
        nbio_v7_0_hdp_flush_reg.ref_and_mask_sdma0 = GPU_HDP_FLUSH_DONE__SDMA0_MASK;
        nbio_v7_0_hdp_flush_reg.ref_and_mask_sdma1 = GPU_HDP_FLUSH_DONE__SDMA1_MASK;
 
-       nbio_v7_0_pcie_index_data.index_offset = SOC15_REG_OFFSET(NBIO, 0, mmPCIE_INDEX2);
-       nbio_v7_0_pcie_index_data.data_offset = SOC15_REG_OFFSET(NBIO, 0, mmPCIE_DATA2);
-
        return 0;
 }

diff --git a/drivers/gpu/drm/amd/amdgpu/nbio_v7_0.h b/drivers/gpu/drm/amd/amdgpu/nbio_v7_0.h
index 054ff49..21bad00 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/nbio_v7_0.h
+++ b/drivers/gpu/drm/amd/amdgpu/nbio_v7_0.h
@@ -27,7 +27,7 @@
 #include "soc15_common.h"
 
 extern struct nbio_hdp_flush_reg nbio_v7_0_hdp_flush_reg;
-extern struct nbio_pcie_index_data nbio_v7_0_pcie_index_data;
+extern const struct nbio_pcie_index_data nbio_v7_0_pcie_index_data;
 int nbio_v7_0_init(struct amdgpu_device *adev);
 u32 nbio_v7_0_get_atombios_scratch_regs(struct amdgpu_device *adev,
                                         uint32_t idx);

diff --git a/drivers/gpu/drm/amd/amdgpu/soc15.c b/drivers/gpu/drm/amd/amdgpu/soc15.c
index 245a18a..dd5cbf3 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/soc15.c
+++ b/drivers/gpu/drm/amd/amdgpu/soc15.c
@@ -101,7 +101,7 @@ static u32 soc15_pcie_rreg(struct amdgpu_device *adev, u32 reg)
 {
        unsigned long flags, address, data;
        u32 r;
-       struct nbio_pcie_index_data *nbio_pcie_id;
+       const struct nbio_pcie_index_data *nbio_pcie_id;
 
        if (adev->flags & AMD_IS_APU)
                nbio_pcie_id = &nbio_v7_0_pcie_index_data;
@@ -122,7 +122,7 @@ static u32 soc15_pcie_rreg(struct amdgpu_device *adev, u32 reg)
 static void soc15_pcie_wreg(struct amdgpu_device *adev, u32 reg, u32 v)
 {
        unsigned long flags, address, data;
-       struct nbio_pcie_index_data *nbio_pcie_id;
+       const struct nbio_pcie_index_data *nbio_pcie_id;
 
        if (adev->flags & AMD_IS_APU)
                nbio_pcie_id = &nbio_v7_0_pcie_index_data;