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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 <Likun.Gao@amd.com>
Reviewed-by: Kenneth Feng <kenneth.feng@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Likun Gao 2021-02-01 14:44:09 +08:00 committed by Alex Deucher
parent 680602d6c2
commit e1edaeafeb
3 changed files with 124 additions and 6 deletions
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1
drivers/gpu/drm/amd/amdgpu/amdgpu_nbio.h
View File

@ -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 {

114
drivers/gpu/drm/amd/amdgpu/nbio_v2_3.c
View File

@ -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,
};

15
drivers/gpu/drm/amd/amdgpu/nv.c
View File

@ -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;
}