diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/nbio_v2_3.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/nbio_v2_3.c | 50 |
1 files changed, 49 insertions, 1 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..b5c3db16c2b0 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 @@ -51,8 +53,17 @@ static void nbio_v2_3_remap_hdp_registers(struct amdgpu_device *adev) static u32 nbio_v2_3_get_rev_id(struct amdgpu_device *adev) { - u32 tmp = RREG32_SOC15(NBIO, 0, mmRCC_DEV0_EPF0_STRAP0); + u32 tmp; + /* + * guest vm gets 0xffffffff when reading RCC_DEV0_EPF0_STRAP0, + * therefore we force rev_id to 0 (which is the default value) + */ + if (amdgpu_sriov_vf(adev)) { + return 0; + } + + tmp = RREG32_SOC15(NBIO, 0, mmRCC_DEV0_EPF0_STRAP0); tmp &= RCC_DEV0_EPF0_STRAP0__STRAP_ATI_REV_ID_DEV0_F0_MASK; tmp >>= RCC_DEV0_EPF0_STRAP0__STRAP_ATI_REV_ID_DEV0_F0__SHIFT; @@ -312,6 +323,42 @@ 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 +379,5 @@ 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, }; |