From e1edaeafeb667688125ef1c4e2a098d2c798fc24 Mon Sep 17 00:00:00 2001 From: Likun Gao Date: Mon, 1 Feb 2021 14:44:09 +0800 Subject: [PATCH] drm/amdgpu: support ASPM for some specific ASIC Support to program ASPM and LTR for Sienna Cichlid and forward ASIC. Disable ASPM for Sienna Cichlid and forward ASIC by default. Signed-off-by: Likun Gao Reviewed-by: Kenneth Feng Reviewed-by: Hawking Zhang Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_nbio.h | 1 + drivers/gpu/drm/amd/amdgpu/nbio_v2_3.c | 114 +++++++++++++++++++++++++++++++ drivers/gpu/drm/amd/amdgpu/nv.c | 15 ++-- 3 files changed, 124 insertions(+), 6 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_nbio.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_nbio.h index 4ba0024aedf1..7c11bce4514b 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_nbio.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_nbio.h @@ -88,6 +88,7 @@ struct amdgpu_nbio_funcs { int (*ras_late_init)(struct amdgpu_device *adev); void (*enable_aspm)(struct amdgpu_device *adev, bool enable); + void (*program_aspm)(struct amdgpu_device *adev); }; struct amdgpu_nbio { diff --git a/drivers/gpu/drm/amd/amdgpu/nbio_v2_3.c b/drivers/gpu/drm/amd/amdgpu/nbio_v2_3.c index b860f1c7b5b1..05ddec7ba7e2 100644 --- a/drivers/gpu/drm/amd/amdgpu/nbio_v2_3.c +++ b/drivers/gpu/drm/amd/amdgpu/nbio_v2_3.c @@ -34,6 +34,14 @@ #define smnCPM_CONTROL 0x11180460 #define smnPCIE_CNTL2 0x11180070 #define smnPCIE_LC_CNTL 0x11140280 +#define smnPCIE_LC_CNTL3 0x111402d4 +#define smnPCIE_LC_CNTL6 0x111402ec +#define smnPCIE_LC_CNTL7 0x111402f0 +#define smnBIF_CFG_DEV0_EPF0_DEVICE_CNTL2 0x1014008c +#define smnRCC_EP_DEV0_0_EP_PCIE_TX_LTR_CNTL 0x10123538 +#define smnBIF_CFG_DEV0_EPF0_PCIE_LTR_CAP 0x10140324 +#define smnPSWUSP0_PCIE_LC_CNTL2 0x111402c4 +#define smnNBIF_MGCG_CTRL_LCLK 0x1013a21c #define mmBIF_SDMA2_DOORBELL_RANGE 0x01d6 #define mmBIF_SDMA2_DOORBELL_RANGE_BASE_IDX 2 @@ -350,6 +358,111 @@ static void nbio_v2_3_enable_aspm(struct amdgpu_device *adev, WREG32_PCIE(smnPCIE_LC_CNTL, data); } +static void nbio_v2_3_program_ltr(struct amdgpu_device *adev) +{ + uint32_t def, data; + + WREG32_PCIE(smnRCC_EP_DEV0_0_EP_PCIE_TX_LTR_CNTL, 0x75EB); + + def = data = RREG32_SOC15(NBIO, 0, mmRCC_BIF_STRAP2); + data &= ~RCC_BIF_STRAP2__STRAP_LTR_IN_ASPML1_DIS_MASK; + if (def != data) + WREG32_SOC15(NBIO, 0, mmRCC_BIF_STRAP2, data); + + def = data = RREG32_PCIE(smnRCC_EP_DEV0_0_EP_PCIE_TX_LTR_CNTL); + data &= ~EP_PCIE_TX_LTR_CNTL__LTR_PRIV_MSG_DIS_IN_PM_NON_D0_MASK; + if (def != data) + WREG32_PCIE(smnRCC_EP_DEV0_0_EP_PCIE_TX_LTR_CNTL, data); + + def = data = RREG32_PCIE(smnBIF_CFG_DEV0_EPF0_DEVICE_CNTL2); + data |= BIF_CFG_DEV0_EPF0_DEVICE_CNTL2__LTR_EN_MASK; + if (def != data) + WREG32_PCIE(smnBIF_CFG_DEV0_EPF0_DEVICE_CNTL2, data); +} + +static void nbio_v2_3_program_aspm(struct amdgpu_device *adev) +{ + uint32_t def, data; + + def = data = RREG32_PCIE(smnPCIE_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_PCIE(smnPCIE_LC_CNTL, data); + + def = data = RREG32_PCIE(smnPCIE_LC_CNTL7); + data |= PCIE_LC_CNTL7__LC_NBIF_ASPM_INPUT_EN_MASK; + if (def != data) + WREG32_PCIE(smnPCIE_LC_CNTL7, data); + + def = data = RREG32_PCIE(smnNBIF_MGCG_CTRL_LCLK); + data |= NBIF_MGCG_CTRL_LCLK__NBIF_MGCG_REG_DIS_LCLK_MASK; + if (def != data) + WREG32_PCIE(smnNBIF_MGCG_CTRL_LCLK, data); + + def = data = RREG32_PCIE(smnPCIE_LC_CNTL3); + data |= PCIE_LC_CNTL3__LC_DSC_DONT_ENTER_L23_AFTER_PME_ACK_MASK; + if (def != data) + WREG32_PCIE(smnPCIE_LC_CNTL3, data); + + def = data = RREG32_SOC15(NBIO, 0, mmRCC_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, mmRCC_BIF_STRAP3, data); + + def = data = RREG32_SOC15(NBIO, 0, mmRCC_BIF_STRAP5); + data &= ~RCC_BIF_STRAP5__STRAP_VLINK_LDN_ENTRY_TIMER_MASK; + if (def != data) + WREG32_SOC15(NBIO, 0, mmRCC_BIF_STRAP5, data); + + def = data = RREG32_PCIE(smnBIF_CFG_DEV0_EPF0_DEVICE_CNTL2); + data &= ~BIF_CFG_DEV0_EPF0_DEVICE_CNTL2__LTR_EN_MASK; + if (def != data) + WREG32_PCIE(smnBIF_CFG_DEV0_EPF0_DEVICE_CNTL2, data); + + WREG32_PCIE(smnBIF_CFG_DEV0_EPF0_PCIE_LTR_CAP, 0x10011001); + + def = data = RREG32_PCIE(smnPSWUSP0_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_PCIE(smnPSWUSP0_PCIE_LC_CNTL2, data); + + def = data = RREG32_PCIE(smnPCIE_LC_CNTL6); + data |= PCIE_LC_CNTL6__LC_L1_POWERDOWN_MASK | + PCIE_LC_CNTL6__LC_RX_L0S_STANDBY_EN_MASK; + if (def != data) + WREG32_PCIE(smnPCIE_LC_CNTL6, data); + + nbio_v2_3_program_ltr(adev); + + def = data = RREG32_SOC15(NBIO, 0, mmRCC_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, mmRCC_BIF_STRAP3, data); + + def = data = RREG32_SOC15(NBIO, 0, mmRCC_BIF_STRAP5); + data |= 0x0010 << RCC_BIF_STRAP5__STRAP_VLINK_LDN_ENTRY_TIMER__SHIFT; + if (def != data) + WREG32_SOC15(NBIO, 0, mmRCC_BIF_STRAP5, data); + + def = data = RREG32_PCIE(smnPCIE_LC_CNTL); + data &= ~PCIE_LC_CNTL__LC_L0S_INACTIVITY_MASK; + data |= 0x9 << PCIE_LC_CNTL__LC_L1_INACTIVITY__SHIFT; + data |= 0x1 << PCIE_LC_CNTL__LC_PMI_TO_L1_DIS__SHIFT; + if (def != data) + WREG32_PCIE(smnPCIE_LC_CNTL, data); + + def = data = RREG32_PCIE(smnPCIE_LC_CNTL3); + data &= ~PCIE_LC_CNTL3__LC_DSC_DONT_ENTER_L23_AFTER_PME_ACK_MASK; + if (def != data) + WREG32_PCIE(smnPCIE_LC_CNTL3, 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, @@ -370,4 +483,5 @@ const struct amdgpu_nbio_funcs nbio_v2_3_funcs = { .init_registers = nbio_v2_3_init_registers, .remap_hdp_registers = nbio_v2_3_remap_hdp_registers, .enable_aspm = nbio_v2_3_enable_aspm, + .program_aspm = nbio_v2_3_program_aspm, }; diff --git a/drivers/gpu/drm/amd/amdgpu/nv.c b/drivers/gpu/drm/amd/amdgpu/nv.c index 66279f0c6808..59b220d08fc1 100644 --- a/drivers/gpu/drm/amd/amdgpu/nv.c +++ b/drivers/gpu/drm/amd/amdgpu/nv.c @@ -468,11 +468,14 @@ static void nv_pcie_gen3_enable(struct amdgpu_device *adev) static void nv_program_aspm(struct amdgpu_device *adev) { - - if (amdgpu_aspm == 0) + if (amdgpu_aspm != 1) return; - /* todo */ + if ((adev->asic_type >= CHIP_SIENNA_CICHLID) && + !(adev->flags & AMD_IS_APU) && + (adev->nbio.funcs->program_aspm)) + adev->nbio.funcs->program_aspm(adev); + } static void nv_enable_doorbell_aperture(struct amdgpu_device *adev, @@ -798,10 +801,10 @@ static int nv_update_umd_stable_pstate(struct amdgpu_device *adev, * The ASPM function is not fully enabled and verified on * Navi yet. Temporarily skip this until ASPM enabled. */ -#if 0 - if (adev->nbio.funcs->enable_aspm) + if ((adev->asic_type >= CHIP_SIENNA_CICHLID) && + !(adev->flags & AMD_IS_APU) && + (adev->nbio.funcs->enable_aspm)) adev->nbio.funcs->enable_aspm(adev, !enter); -#endif return 0; } -- 2.11.0