From: Dave Airlie Date: Fri, 29 Sep 2017 00:08:01 +0000 (+1000) Subject: amdgpu/soc15: make the pcie index/data registers constant. X-Git-Tag: v4.15-rc1~56^2~24^2~40 X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=35b31f7c6464480b10f3a54c9a35699e02f17ae8;p=linux.git 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 Signed-off-by: Alex Deucher --- diff --git a/drivers/gpu/drm/amd/amdgpu/nbio_v6_1.c b/drivers/gpu/drm/amd/amdgpu/nbio_v6_1.c index 045988b18bc3..7723d7bccb96 100644 --- 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 686e4b4d296a..c5ca1e47763c 100644 --- 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 11b70d601922..b932b780dd32 100644 --- 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 054ff49427e6..21bad0098bf6 100644 --- 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 245a18aeb389..dd5cbf37abc4 100644 --- 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;