diff options
| author | Evan Quan <evan.quan@amd.com> | 2020-08-18 16:50:44 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2020-10-15 12:20:53 -0400 |
| commit | f1213b15976881db82d1dcb36e19646d09b0220f (patch) | |
| tree | 76e17bd0759a3a65571cc4087333014ad41b91df /drivers/gpu/drm/amd/amdgpu/nbio_v2_3.c | |
| parent | f2b75bc24dee364f7c251539a9bc0d1730efee8b (diff) | |
drm/amdgpu: add interface for setting ASPM
Support NAVI10 ASPM setting.
Signed-off-by: Evan Quan <evan.quan@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/nbio_v2_3.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/nbio_v2_3.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/nbio_v2_3.c b/drivers/gpu/drm/amd/amdgpu/nbio_v2_3.c index 7429f30398b9..e0048806afaa 100644 --- a/drivers/gpu/drm/amd/amdgpu/nbio_v2_3.c +++ b/drivers/gpu/drm/amd/amdgpu/nbio_v2_3.c @@ -28,10 +28,12 @@ #include "nbio/nbio_2_3_offset.h" #include "nbio/nbio_2_3_sh_mask.h" #include <uapi/linux/kfd_ioctl.h> +#include <linux/pci.h> #define smnPCIE_CONFIG_CNTL 0x11180044 #define smnCPM_CONTROL 0x11180460 #define smnPCIE_CNTL2 0x11180070 +#define smnPCIE_LC_CNTL 0x11140280 #define mmBIF_SDMA2_DOORBELL_RANGE 0x01d6 #define mmBIF_SDMA2_DOORBELL_RANGE_BASE_IDX 2 @@ -312,6 +314,42 @@ static void nbio_v2_3_init_registers(struct amdgpu_device *adev) WREG32_PCIE(smnPCIE_CONFIG_CNTL, data); } +#define NAVI10_PCIE__LC_L0S_INACTIVITY_DEFAULT 0x00000000 // off by default, no gains over L1 +#define NAVI10_PCIE__LC_L1_INACTIVITY_DEFAULT 0x00000009 // 1=1us, 9=1ms +#define NAVI10_PCIE__LC_L1_INACTIVITY_TBT_DEFAULT 0x0000000E // 4ms + +static void nbio_v2_3_enable_aspm(struct amdgpu_device *adev, + bool enable) +{ + uint32_t def, data; + + def = data = RREG32_PCIE(smnPCIE_LC_CNTL); + + if (enable) { + /* Disable ASPM L0s/L1 first */ + data &= ~(PCIE_LC_CNTL__LC_L0S_INACTIVITY_MASK | PCIE_LC_CNTL__LC_L1_INACTIVITY_MASK); + + data |= NAVI10_PCIE__LC_L0S_INACTIVITY_DEFAULT << PCIE_LC_CNTL__LC_L0S_INACTIVITY__SHIFT; + + if (pci_is_thunderbolt_attached(adev->pdev)) + data |= NAVI10_PCIE__LC_L1_INACTIVITY_TBT_DEFAULT << PCIE_LC_CNTL__LC_L1_INACTIVITY__SHIFT; + else + data |= NAVI10_PCIE__LC_L1_INACTIVITY_DEFAULT << PCIE_LC_CNTL__LC_L1_INACTIVITY__SHIFT; + + data &= ~PCIE_LC_CNTL__LC_PMI_TO_L1_DIS_MASK; + } else { + /* Disbale ASPM L1 */ + data &= ~PCIE_LC_CNTL__LC_L1_INACTIVITY_MASK; + /* Disable ASPM TxL0s */ + data &= ~PCIE_LC_CNTL__LC_L0S_INACTIVITY_MASK; + /* Disable ACPI L1 */ + data |= PCIE_LC_CNTL__LC_PMI_TO_L1_DIS_MASK; + } + + if (def != data) + WREG32_PCIE(smnPCIE_LC_CNTL, data); +} + const struct amdgpu_nbio_funcs nbio_v2_3_funcs = { .get_hdp_flush_req_offset = nbio_v2_3_get_hdp_flush_req_offset, .get_hdp_flush_done_offset = nbio_v2_3_get_hdp_flush_done_offset, @@ -332,4 +370,5 @@ const struct amdgpu_nbio_funcs nbio_v2_3_funcs = { .ih_control = nbio_v2_3_ih_control, .init_registers = nbio_v2_3_init_registers, .remap_hdp_registers = nbio_v2_3_remap_hdp_registers, + .enable_aspm = nbio_v2_3_enable_aspm, }; |