[PATCH 2/3] drm: correct Transmit Margin masks
From: Bjorn Helgaas
Date: Tue Nov 12 2019 - 12:35:29 EST
From: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
Previously we masked PCIe Link Control 2 register values with "7 << 9",
which was apparently intended to be the Transmit Margin field, but instead
was the high order bit of Transmit Margin, the Enter Modified Compliance
bit, and the Compliance SOS bit.
Correct the mask to "7 << 7", which is the Transmit Margin field.
Signed-off-by: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/cik.c | 8 ++++----
drivers/gpu/drm/amd/amdgpu/si.c | 8 ++++----
drivers/gpu/drm/radeon/cik.c | 8 ++++----
drivers/gpu/drm/radeon/si.c | 8 ++++----
4 files changed, 16 insertions(+), 16 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/cik.c b/drivers/gpu/drm/amd/amdgpu/cik.c
index b81bb414fcb3..13a5696d2a6a 100644
--- a/drivers/gpu/drm/amd/amdgpu/cik.c
+++ b/drivers/gpu/drm/amd/amdgpu/cik.c
@@ -1498,13 +1498,13 @@ 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 << 9));
- tmp16 |= (bridge_cfg2 & ((1 << 4) | (7 << 9)));
+ tmp16 &= ~((1 << 4) | (7 << 7));
+ tmp16 |= (bridge_cfg2 & ((1 << 4) | (7 << 7)));
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 << 9));
- tmp16 |= (gpu_cfg2 & ((1 << 4) | (7 << 9)));
+ tmp16 &= ~((1 << 4) | (7 << 7));
+ tmp16 |= (gpu_cfg2 & ((1 << 4) | (7 << 7)));
pci_write_config_word(adev->pdev, gpu_pos + PCI_EXP_LNKCTL2, tmp16);
tmp = RREG32_PCIE(ixPCIE_LC_CNTL4);
diff --git a/drivers/gpu/drm/amd/amdgpu/si.c b/drivers/gpu/drm/amd/amdgpu/si.c
index 493af42152f2..1e350172dc7b 100644
--- a/drivers/gpu/drm/amd/amdgpu/si.c
+++ b/drivers/gpu/drm/amd/amdgpu/si.c
@@ -1737,13 +1737,13 @@ 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 << 9));
- tmp16 |= (bridge_cfg2 & ((1 << 4) | (7 << 9)));
+ tmp16 &= ~((1 << 4) | (7 << 7));
+ tmp16 |= (bridge_cfg2 & ((1 << 4) | (7 << 7)));
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 << 9));
- tmp16 |= (gpu_cfg2 & ((1 << 4) | (7 << 9)));
+ tmp16 &= ~((1 << 4) | (7 << 7));
+ tmp16 |= (gpu_cfg2 & ((1 << 4) | (7 << 7)));
pci_write_config_word(adev->pdev, gpu_pos + PCI_EXP_LNKCTL2, tmp16);
tmp = RREG32_PCIE_PORT(PCIE_LC_CNTL4);
diff --git a/drivers/gpu/drm/radeon/cik.c b/drivers/gpu/drm/radeon/cik.c
index 62eab82a64f9..14cdfdf78bde 100644
--- a/drivers/gpu/drm/radeon/cik.c
+++ b/drivers/gpu/drm/radeon/cik.c
@@ -9619,13 +9619,13 @@ static void cik_pcie_gen3_enable(struct radeon_device *rdev)
/* linkctl2 */
pci_read_config_word(root, bridge_pos + PCI_EXP_LNKCTL2, &tmp16);
- tmp16 &= ~((1 << 4) | (7 << 9));
- tmp16 |= (bridge_cfg2 & ((1 << 4) | (7 << 9)));
+ tmp16 &= ~((1 << 4) | (7 << 7));
+ tmp16 |= (bridge_cfg2 & ((1 << 4) | (7 << 7)));
pci_write_config_word(root, bridge_pos + PCI_EXP_LNKCTL2, tmp16);
pci_read_config_word(rdev->pdev, gpu_pos + PCI_EXP_LNKCTL2, &tmp16);
- tmp16 &= ~((1 << 4) | (7 << 9));
- tmp16 |= (gpu_cfg2 & ((1 << 4) | (7 << 9)));
+ tmp16 &= ~((1 << 4) | (7 << 7));
+ tmp16 |= (gpu_cfg2 & ((1 << 4) | (7 << 7)));
pci_write_config_word(rdev->pdev, gpu_pos + PCI_EXP_LNKCTL2, tmp16);
tmp = RREG32_PCIE_PORT(PCIE_LC_CNTL4);
diff --git a/drivers/gpu/drm/radeon/si.c b/drivers/gpu/drm/radeon/si.c
index 05894d198a79..9b7042d3ef1b 100644
--- a/drivers/gpu/drm/radeon/si.c
+++ b/drivers/gpu/drm/radeon/si.c
@@ -7202,13 +7202,13 @@ static void si_pcie_gen3_enable(struct radeon_device *rdev)
/* linkctl2 */
pci_read_config_word(root, bridge_pos + PCI_EXP_LNKCTL2, &tmp16);
- tmp16 &= ~((1 << 4) | (7 << 9));
- tmp16 |= (bridge_cfg2 & ((1 << 4) | (7 << 9)));
+ tmp16 &= ~((1 << 4) | (7 << 7));
+ tmp16 |= (bridge_cfg2 & ((1 << 4) | (7 << 7)));
pci_write_config_word(root, bridge_pos + PCI_EXP_LNKCTL2, tmp16);
pci_read_config_word(rdev->pdev, gpu_pos + PCI_EXP_LNKCTL2, &tmp16);
- tmp16 &= ~((1 << 4) | (7 << 9));
- tmp16 |= (gpu_cfg2 & ((1 << 4) | (7 << 9)));
+ tmp16 &= ~((1 << 4) | (7 << 7));
+ tmp16 |= (gpu_cfg2 & ((1 << 4) | (7 << 7)));
pci_write_config_word(rdev->pdev, gpu_pos + PCI_EXP_LNKCTL2, tmp16);
tmp = RREG32_PCIE_PORT(PCIE_LC_CNTL4);
--
2.24.0.rc1.363.gb1bccd3e3d-goog