5.4-stable review patch. If anyone has any objections, please let me know. ------------------ From: Bjorn Helgaas <bhelgaas@xxxxxxxxxx> [ Upstream commit 35e768e296729ac96a8c33b7810b6cb1673ae961 ] Replace hard-coded magic numbers with the descriptive PCI_EXP_LNKCTL2 definitions. No functional change intended. Link: https://lore.kernel.org/r/20191112173503.176611-4-helgaas@xxxxxxxxxx Signed-off-by: Bjorn Helgaas <bhelgaas@xxxxxxxxxx> Reviewed-by: Alex Deucher <alexander.deucher@xxxxxxx> Stable-dep-of: ce7d88110b9e ("drm/amdgpu: Use RMW accessors for changing LNKCTL") Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- drivers/gpu/drm/amd/amdgpu/cik.c | 22 ++++++++++++++-------- drivers/gpu/drm/amd/amdgpu/si.c | 22 ++++++++++++++-------- 2 files changed, 28 insertions(+), 16 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/cik.c b/drivers/gpu/drm/amd/amdgpu/cik.c index 13a5696d2a6a2..3067bb874032f 100644 --- a/drivers/gpu/drm/amd/amdgpu/cik.c +++ b/drivers/gpu/drm/amd/amdgpu/cik.c @@ -1498,13 +1498,19 @@ static void cik_pcie_gen3_enable(struct amdgpu_device *adev) /* linkctl2 */ pci_read_config_word(root, bridge_pos + PCI_EXP_LNKCTL2, &tmp16); - tmp16 &= ~((1 << 4) | (7 << 7)); - tmp16 |= (bridge_cfg2 & ((1 << 4) | (7 << 7))); + tmp16 &= ~(PCI_EXP_LNKCTL2_ENTER_COMP | + PCI_EXP_LNKCTL2_TX_MARGIN); + tmp16 |= (bridge_cfg2 & + (PCI_EXP_LNKCTL2_ENTER_COMP | + PCI_EXP_LNKCTL2_TX_MARGIN)); pci_write_config_word(root, bridge_pos + PCI_EXP_LNKCTL2, tmp16); pci_read_config_word(adev->pdev, gpu_pos + PCI_EXP_LNKCTL2, &tmp16); - tmp16 &= ~((1 << 4) | (7 << 7)); - tmp16 |= (gpu_cfg2 & ((1 << 4) | (7 << 7))); + tmp16 &= ~(PCI_EXP_LNKCTL2_ENTER_COMP | + PCI_EXP_LNKCTL2_TX_MARGIN); + tmp16 |= (gpu_cfg2 & + (PCI_EXP_LNKCTL2_ENTER_COMP | + PCI_EXP_LNKCTL2_TX_MARGIN)); pci_write_config_word(adev->pdev, gpu_pos + PCI_EXP_LNKCTL2, tmp16); tmp = RREG32_PCIE(ixPCIE_LC_CNTL4); @@ -1521,13 +1527,13 @@ static void cik_pcie_gen3_enable(struct amdgpu_device *adev) WREG32_PCIE(ixPCIE_LC_SPEED_CNTL, speed_cntl); pci_read_config_word(adev->pdev, gpu_pos + PCI_EXP_LNKCTL2, &tmp16); - tmp16 &= ~0xf; + tmp16 &= ~PCI_EXP_LNKCTL2_TLS; if (adev->pm.pcie_gen_mask & CAIL_PCIE_LINK_SPEED_SUPPORT_GEN3) - tmp16 |= 3; /* gen3 */ + tmp16 |= PCI_EXP_LNKCTL2_TLS_8_0GT; /* gen3 */ else if (adev->pm.pcie_gen_mask & CAIL_PCIE_LINK_SPEED_SUPPORT_GEN2) - tmp16 |= 2; /* gen2 */ + tmp16 |= PCI_EXP_LNKCTL2_TLS_5_0GT; /* gen2 */ else - tmp16 |= 1; /* gen1 */ + tmp16 |= PCI_EXP_LNKCTL2_TLS_2_5GT; /* gen1 */ pci_write_config_word(adev->pdev, gpu_pos + PCI_EXP_LNKCTL2, tmp16); speed_cntl = RREG32_PCIE(ixPCIE_LC_SPEED_CNTL); diff --git a/drivers/gpu/drm/amd/amdgpu/si.c b/drivers/gpu/drm/amd/amdgpu/si.c index 1e350172dc7bb..a7dcb0d0f039c 100644 --- a/drivers/gpu/drm/amd/amdgpu/si.c +++ b/drivers/gpu/drm/amd/amdgpu/si.c @@ -1737,13 +1737,19 @@ static void si_pcie_gen3_enable(struct amdgpu_device *adev) pci_write_config_word(adev->pdev, gpu_pos + PCI_EXP_LNKCTL, tmp16); pci_read_config_word(root, bridge_pos + PCI_EXP_LNKCTL2, &tmp16); - tmp16 &= ~((1 << 4) | (7 << 7)); - tmp16 |= (bridge_cfg2 & ((1 << 4) | (7 << 7))); + tmp16 &= ~(PCI_EXP_LNKCTL2_ENTER_COMP | + PCI_EXP_LNKCTL2_TX_MARGIN); + tmp16 |= (bridge_cfg2 & + (PCI_EXP_LNKCTL2_ENTER_COMP | + PCI_EXP_LNKCTL2_TX_MARGIN)); pci_write_config_word(root, bridge_pos + PCI_EXP_LNKCTL2, tmp16); pci_read_config_word(adev->pdev, gpu_pos + PCI_EXP_LNKCTL2, &tmp16); - tmp16 &= ~((1 << 4) | (7 << 7)); - tmp16 |= (gpu_cfg2 & ((1 << 4) | (7 << 7))); + tmp16 &= ~(PCI_EXP_LNKCTL2_ENTER_COMP | + PCI_EXP_LNKCTL2_TX_MARGIN); + tmp16 |= (gpu_cfg2 & + (PCI_EXP_LNKCTL2_ENTER_COMP | + PCI_EXP_LNKCTL2_TX_MARGIN)); pci_write_config_word(adev->pdev, gpu_pos + PCI_EXP_LNKCTL2, tmp16); tmp = RREG32_PCIE_PORT(PCIE_LC_CNTL4); @@ -1758,13 +1764,13 @@ static void si_pcie_gen3_enable(struct amdgpu_device *adev) WREG32_PCIE_PORT(PCIE_LC_SPEED_CNTL, speed_cntl); pci_read_config_word(adev->pdev, gpu_pos + PCI_EXP_LNKCTL2, &tmp16); - tmp16 &= ~0xf; + tmp16 &= ~PCI_EXP_LNKCTL2_TLS; if (adev->pm.pcie_gen_mask & CAIL_PCIE_LINK_SPEED_SUPPORT_GEN3) - tmp16 |= 3; + tmp16 |= PCI_EXP_LNKCTL2_TLS_8_0GT; /* gen3 */ else if (adev->pm.pcie_gen_mask & CAIL_PCIE_LINK_SPEED_SUPPORT_GEN2) - tmp16 |= 2; + tmp16 |= PCI_EXP_LNKCTL2_TLS_5_0GT; /* gen2 */ else - tmp16 |= 1; + tmp16 |= PCI_EXP_LNKCTL2_TLS_2_5GT; /* gen1 */ pci_write_config_word(adev->pdev, gpu_pos + PCI_EXP_LNKCTL2, tmp16); speed_cntl = RREG32_PCIE_PORT(PCIE_LC_SPEED_CNTL); -- 2.40.1
