From: Evan Quan Date: Thu, 28 Apr 2022 08:51:04 +0000 (+0800) Subject: drm/amdgpu: enable ASPM support for PCIE 7.4.0/7.6.0 X-Git-Tag: v6.1-rc5~617^2~17^2~170 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=62f8f5c3bfc2968461b0a74f0e393325bec16c69;p=platform%2Fkernel%2Flinux-starfive.git drm/amdgpu: enable ASPM support for PCIE 7.4.0/7.6.0 Enable ASPM support for PCIE 7.4.0 and 7.6.0. Signed-off-by: Evan Quan Reviewed-by: Lijo Lazar Signed-off-by: Alex Deucher --- diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h index 47bcf86..7971d92 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h @@ -670,6 +670,7 @@ enum amd_hw_ip_block_type { RSMU_HWIP, XGMI_HWIP, DCI_HWIP, + PCIE_HWIP, MAX_HWIP }; diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c index b081128..1369a1b 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c @@ -194,6 +194,7 @@ static int hw_id_map[MAX_HWIP] = { [UMC_HWIP] = UMC_HWID, [XGMI_HWIP] = XGMI_HWID, [DCI_HWIP] = DCI_HWID, + [PCIE_HWIP] = PCIE_HWID, }; static int amdgpu_discovery_read_binary_from_vram(struct amdgpu_device *adev, uint8_t *binary) diff --git a/drivers/gpu/drm/amd/amdgpu/nbio_v4_3.c b/drivers/gpu/drm/amd/amdgpu/nbio_v4_3.c index ed31d13..233be73 100644 --- a/drivers/gpu/drm/amd/amdgpu/nbio_v4_3.c +++ b/drivers/gpu/drm/amd/amdgpu/nbio_v4_3.c @@ -344,6 +344,121 @@ static u32 nbio_v4_3_get_rom_offset(struct amdgpu_device *adev) return rom_offset; } +#ifdef CONFIG_PCIEASPM +static void nbio_v4_3_program_ltr(struct amdgpu_device *adev) +{ + uint32_t def, data; + + def = RREG32_SOC15(NBIO, 0, regRCC_EP_DEV0_0_EP_PCIE_TX_LTR_CNTL); + data = 0x35EB; + data &= ~EP_PCIE_TX_LTR_CNTL__LTR_PRIV_MSG_DIS_IN_PM_NON_D0_MASK; + data &= ~EP_PCIE_TX_LTR_CNTL__LTR_PRIV_RST_LTR_IN_DL_DOWN_MASK; + if (def != data) + WREG32_SOC15(NBIO, 0, regRCC_EP_DEV0_0_EP_PCIE_TX_LTR_CNTL, data); + + def = data = RREG32_SOC15(NBIO, 0, regRCC_STRAP0_RCC_BIF_STRAP2); + data &= ~RCC_BIF_STRAP2__STRAP_LTR_IN_ASPML1_DIS_MASK; + if (def != data) + WREG32_SOC15(NBIO, 0, regRCC_STRAP0_RCC_BIF_STRAP2, data); + + def = data = RREG32_SOC15(NBIO, 0, regBIF_CFG_DEV0_EPF0_DEVICE_CNTL2); + if (adev->pdev->ltr_path) + data |= BIF_CFG_DEV0_EPF0_DEVICE_CNTL2__LTR_EN_MASK; + else + data &= ~BIF_CFG_DEV0_EPF0_DEVICE_CNTL2__LTR_EN_MASK; + if (def != data) + WREG32_SOC15(NBIO, 0, regBIF_CFG_DEV0_EPF0_DEVICE_CNTL2, data); +} +#endif + +static void nbio_v4_3_program_aspm(struct amdgpu_device *adev) +{ +#ifdef CONFIG_PCIEASPM + uint32_t def, data; + + if (!(adev->ip_versions[PCIE_HWIP][0] == IP_VERSION(7, 4, 0)) && + !(adev->ip_versions[PCIE_HWIP][0] == IP_VERSION(7, 6, 0))) + return; + + def = data = RREG32_SOC15(NBIO, 0, regPCIE_LC_CNTL); + data &= ~PCIE_LC_CNTL__LC_L1_INACTIVITY_MASK; + data &= ~PCIE_LC_CNTL__LC_L0S_INACTIVITY_MASK; + data |= PCIE_LC_CNTL__LC_PMI_TO_L1_DIS_MASK; + if (def != data) + WREG32_SOC15(NBIO, 0, regPCIE_LC_CNTL, data); + + def = data = RREG32_SOC15(NBIO, 0, regPCIE_LC_CNTL7); + data |= PCIE_LC_CNTL7__LC_NBIF_ASPM_INPUT_EN_MASK; + if (def != data) + WREG32_SOC15(NBIO, 0, regPCIE_LC_CNTL7, data); + + def = data = RREG32_SOC15(NBIO, 0, regPCIE_LC_CNTL3); + data |= PCIE_LC_CNTL3__LC_DSC_DONT_ENTER_L23_AFTER_PME_ACK_MASK; + if (def != data) + WREG32_SOC15(NBIO, 0, regPCIE_LC_CNTL3, data); + + def = data = RREG32_SOC15(NBIO, 0, regRCC_STRAP0_RCC_BIF_STRAP3); + data &= ~RCC_BIF_STRAP3__STRAP_VLINK_ASPM_IDLE_TIMER_MASK; + data &= ~RCC_BIF_STRAP3__STRAP_VLINK_PM_L1_ENTRY_TIMER_MASK; + if (def != data) + WREG32_SOC15(NBIO, 0, regRCC_STRAP0_RCC_BIF_STRAP3, data); + + def = data = RREG32_SOC15(NBIO, 0, regRCC_STRAP0_RCC_BIF_STRAP5); + data &= ~RCC_BIF_STRAP5__STRAP_VLINK_LDN_ENTRY_TIMER_MASK; + if (def != data) + WREG32_SOC15(NBIO, 0, regRCC_STRAP0_RCC_BIF_STRAP5, data); + + def = data = RREG32_SOC15(NBIO, 0, regBIF_CFG_DEV0_EPF0_DEVICE_CNTL2); + data &= ~BIF_CFG_DEV0_EPF0_DEVICE_CNTL2__LTR_EN_MASK; + if (def != data) + WREG32_SOC15(NBIO, 0, regBIF_CFG_DEV0_EPF0_DEVICE_CNTL2, data); + + WREG32_SOC15(NBIO, 0, regBIF_CFG_DEV0_EPF0_PCIE_LTR_CAP, 0x10011001); + + def = data = RREG32_SOC15(NBIO, 0, regPSWUSP0_PCIE_LC_CNTL2); + data |= PSWUSP0_PCIE_LC_CNTL2__LC_ALLOW_PDWN_IN_L1_MASK | + PSWUSP0_PCIE_LC_CNTL2__LC_ALLOW_PDWN_IN_L23_MASK; + data &= ~PSWUSP0_PCIE_LC_CNTL2__LC_RCV_L0_TO_RCV_L0S_DIS_MASK; + if (def != data) + WREG32_SOC15(NBIO, 0, regPSWUSP0_PCIE_LC_CNTL2, data); + + def = data = RREG32_SOC15(NBIO, 0, regPCIE_LC_CNTL4); + data |= PCIE_LC_CNTL4__LC_L1_POWERDOWN_MASK; + if (def != data) + WREG32_SOC15(NBIO, 0, regPCIE_LC_CNTL4, data); + + def = data = RREG32_SOC15(NBIO, 0, regPCIE_LC_RXRECOVER_RXSTANDBY_CNTL); + data |= PCIE_LC_RXRECOVER_RXSTANDBY_CNTL__LC_RX_L0S_STANDBY_EN_MASK; + if (def != data) + WREG32_SOC15(NBIO, 0, regPCIE_LC_RXRECOVER_RXSTANDBY_CNTL, data); + + nbio_v4_3_program_ltr(adev); + + def = data = RREG32_SOC15(NBIO, 0, regRCC_STRAP0_RCC_BIF_STRAP3); + data |= 0x5DE0 << RCC_BIF_STRAP3__STRAP_VLINK_ASPM_IDLE_TIMER__SHIFT; + data |= 0x0010 << RCC_BIF_STRAP3__STRAP_VLINK_PM_L1_ENTRY_TIMER__SHIFT; + if (def != data) + WREG32_SOC15(NBIO, 0, regRCC_STRAP0_RCC_BIF_STRAP3, data); + + def = data = RREG32_SOC15(NBIO, 0, regRCC_STRAP0_RCC_BIF_STRAP5); + data |= 0x0010 << RCC_BIF_STRAP5__STRAP_VLINK_LDN_ENTRY_TIMER__SHIFT; + if (def != data) + WREG32_SOC15(NBIO, 0, regRCC_STRAP0_RCC_BIF_STRAP5, data); + + def = data = RREG32_SOC15(NBIO, 0, regPCIE_LC_CNTL); + data |= 0x0 << PCIE_LC_CNTL__LC_L0S_INACTIVITY__SHIFT; + data |= 0x9 << PCIE_LC_CNTL__LC_L1_INACTIVITY__SHIFT; + data &= ~PCIE_LC_CNTL__LC_PMI_TO_L1_DIS_MASK; + if (def != data) + WREG32_SOC15(NBIO, 0, regPCIE_LC_CNTL, data); + + def = data = RREG32_SOC15(NBIO, 0, regPCIE_LC_CNTL3); + data &= ~PCIE_LC_CNTL3__LC_DSC_DONT_ENTER_L23_AFTER_PME_ACK_MASK; + if (def != data) + WREG32_SOC15(NBIO, 0, regPCIE_LC_CNTL3, data); +#endif +} + const struct amdgpu_nbio_funcs nbio_v4_3_funcs = { .get_hdp_flush_req_offset = nbio_v4_3_get_hdp_flush_req_offset, .get_hdp_flush_done_offset = nbio_v4_3_get_hdp_flush_done_offset, @@ -365,4 +480,5 @@ const struct amdgpu_nbio_funcs nbio_v4_3_funcs = { .init_registers = nbio_v4_3_init_registers, .remap_hdp_registers = nbio_v4_3_remap_hdp_registers, .get_rom_offset = nbio_v4_3_get_rom_offset, + .program_aspm = nbio_v4_3_program_aspm, }; diff --git a/drivers/gpu/drm/amd/amdgpu/soc21.c b/drivers/gpu/drm/amd/amdgpu/soc21.c index 57eaafb..4958485 100644 --- a/drivers/gpu/drm/amd/amdgpu/soc21.c +++ b/drivers/gpu/drm/amd/amdgpu/soc21.c @@ -386,11 +386,12 @@ static void soc21_pcie_gen3_enable(struct amdgpu_device *adev) static void soc21_program_aspm(struct amdgpu_device *adev) { - - if (amdgpu_aspm == 0) + if (!amdgpu_device_should_use_aspm(adev)) return; - /* todo */ + if (!(adev->flags & AMD_IS_APU) && + (adev->nbio.funcs->program_aspm)) + adev->nbio.funcs->program_aspm(adev); } static void soc21_enable_doorbell_aperture(struct amdgpu_device *adev, diff --git a/drivers/gpu/drm/amd/include/asic_reg/nbio/nbio_4_3_0_offset.h b/drivers/gpu/drm/amd/include/asic_reg/nbio/nbio_4_3_0_offset.h index 53802d6..4b489d6 100644 --- a/drivers/gpu/drm/amd/include/asic_reg/nbio/nbio_4_3_0_offset.h +++ b/drivers/gpu/drm/amd/include/asic_reg/nbio/nbio_4_3_0_offset.h @@ -6918,6 +6918,8 @@ #define regPSWUSCFG0_SSID_CAP 0x2880031 #define regPSWUSCFG0_SSID_CAP_BASE_IDX 5 +#define regPCIE_LC_RXRECOVER_RXSTANDBY_CNTL 0x2890102 +#define regPCIE_LC_RXRECOVER_RXSTANDBY_CNTL_BASE_IDX 5 // addressBlock: nbio_nbif0_bif_cfg_dev0_rc_bifcfgdecp // base address: 0x10100000 diff --git a/drivers/gpu/drm/amd/include/asic_reg/nbio/nbio_4_3_0_sh_mask.h b/drivers/gpu/drm/amd/include/asic_reg/nbio/nbio_4_3_0_sh_mask.h index f3cda48..d038fd9 100644 --- a/drivers/gpu/drm/amd/include/asic_reg/nbio/nbio_4_3_0_sh_mask.h +++ b/drivers/gpu/drm/amd/include/asic_reg/nbio/nbio_4_3_0_sh_mask.h @@ -82045,5 +82045,6 @@ #define BIF_CFG_DEV0_EPF3_1_RTR_DATA2__FLR_TIME_MASK 0x00000FFFL #define BIF_CFG_DEV0_EPF3_1_RTR_DATA2__D3HOTD0_TIME_MASK 0x00FFF000L +#define PCIE_LC_RXRECOVER_RXSTANDBY_CNTL__LC_RX_L0S_STANDBY_EN_MASK 0x00010000L #endif