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path: root/drivers/gpu/drm/amd/amdgpu/si.c
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Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/si.c')
-rw-r--r--drivers/gpu/drm/amd/amdgpu/si.c97
1 files changed, 61 insertions, 36 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/si.c b/drivers/gpu/drm/amd/amdgpu/si.c
index 29024e64c886..f2d70a47a3af 100644
--- a/drivers/gpu/drm/amd/amdgpu/si.c
+++ b/drivers/gpu/drm/amd/amdgpu/si.c
@@ -1644,7 +1644,6 @@ static void si_init_golden_registers(struct amdgpu_device *adev)
static void si_pcie_gen3_enable(struct amdgpu_device *adev)
{
struct pci_dev *root = adev->pdev->bus->self;
- int bridge_pos, gpu_pos;
u32 speed_cntl, current_data_rate;
int i;
u16 tmp16;
@@ -1679,12 +1678,7 @@ static void si_pcie_gen3_enable(struct amdgpu_device *adev)
DRM_INFO("enabling PCIE gen 2 link speeds, disable with amdgpu.pcie_gen2=0\n");
}
- bridge_pos = pci_pcie_cap(root);
- if (!bridge_pos)
- return;
-
- gpu_pos = pci_pcie_cap(adev->pdev);
- if (!gpu_pos)
+ if (!pci_is_pcie(root) || !pci_is_pcie(adev->pdev))
return;
if (adev->pm.pcie_gen_mask & CAIL_PCIE_LINK_SPEED_SUPPORT_GEN3) {
@@ -1693,14 +1687,17 @@ static void si_pcie_gen3_enable(struct amdgpu_device *adev)
u16 bridge_cfg2, gpu_cfg2;
u32 max_lw, current_lw, tmp;
- pci_read_config_word(root, bridge_pos + PCI_EXP_LNKCTL, &bridge_cfg);
- pci_read_config_word(adev->pdev, gpu_pos + PCI_EXP_LNKCTL, &gpu_cfg);
+ pcie_capability_read_word(root, PCI_EXP_LNKCTL,
+ &bridge_cfg);
+ pcie_capability_read_word(adev->pdev, PCI_EXP_LNKCTL,
+ &gpu_cfg);
tmp16 = bridge_cfg | PCI_EXP_LNKCTL_HAWD;
- pci_write_config_word(root, bridge_pos + PCI_EXP_LNKCTL, tmp16);
+ pcie_capability_write_word(root, PCI_EXP_LNKCTL, tmp16);
tmp16 = gpu_cfg | PCI_EXP_LNKCTL_HAWD;
- pci_write_config_word(adev->pdev, gpu_pos + PCI_EXP_LNKCTL, tmp16);
+ pcie_capability_write_word(adev->pdev, PCI_EXP_LNKCTL,
+ tmp16);
tmp = RREG32_PCIE(PCIE_LC_STATUS1);
max_lw = (tmp & LC_DETECTED_LINK_WIDTH_MASK) >> LC_DETECTED_LINK_WIDTH_SHIFT;
@@ -1717,15 +1714,23 @@ static void si_pcie_gen3_enable(struct amdgpu_device *adev)
}
for (i = 0; i < 10; i++) {
- pci_read_config_word(adev->pdev, gpu_pos + PCI_EXP_DEVSTA, &tmp16);
+ pcie_capability_read_word(adev->pdev,
+ PCI_EXP_DEVSTA,
+ &tmp16);
if (tmp16 & PCI_EXP_DEVSTA_TRPND)
break;
- pci_read_config_word(root, bridge_pos + PCI_EXP_LNKCTL, &bridge_cfg);
- pci_read_config_word(adev->pdev, gpu_pos + PCI_EXP_LNKCTL, &gpu_cfg);
+ pcie_capability_read_word(root, PCI_EXP_LNKCTL,
+ &bridge_cfg);
+ pcie_capability_read_word(adev->pdev,
+ PCI_EXP_LNKCTL,
+ &gpu_cfg);
- pci_read_config_word(root, bridge_pos + PCI_EXP_LNKCTL2, &bridge_cfg2);
- pci_read_config_word(adev->pdev, gpu_pos + PCI_EXP_LNKCTL2, &gpu_cfg2);
+ pcie_capability_read_word(root, PCI_EXP_LNKCTL2,
+ &bridge_cfg2);
+ pcie_capability_read_word(adev->pdev,
+ PCI_EXP_LNKCTL2,
+ &gpu_cfg2);
tmp = RREG32_PCIE_PORT(PCIE_LC_CNTL4);
tmp |= LC_SET_QUIESCE;
@@ -1737,25 +1742,44 @@ static void si_pcie_gen3_enable(struct amdgpu_device *adev)
mdelay(100);
- pci_read_config_word(root, bridge_pos + PCI_EXP_LNKCTL, &tmp16);
+ pcie_capability_read_word(root, PCI_EXP_LNKCTL,
+ &tmp16);
tmp16 &= ~PCI_EXP_LNKCTL_HAWD;
tmp16 |= (bridge_cfg & PCI_EXP_LNKCTL_HAWD);
- pci_write_config_word(root, bridge_pos + PCI_EXP_LNKCTL, tmp16);
+ pcie_capability_write_word(root, PCI_EXP_LNKCTL,
+ tmp16);
- pci_read_config_word(adev->pdev, gpu_pos + PCI_EXP_LNKCTL, &tmp16);
+ pcie_capability_read_word(adev->pdev,
+ PCI_EXP_LNKCTL,
+ &tmp16);
tmp16 &= ~PCI_EXP_LNKCTL_HAWD;
tmp16 |= (gpu_cfg & PCI_EXP_LNKCTL_HAWD);
- 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)));
- 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)));
- pci_write_config_word(adev->pdev, gpu_pos + PCI_EXP_LNKCTL2, tmp16);
+ pcie_capability_write_word(adev->pdev,
+ PCI_EXP_LNKCTL,
+ tmp16);
+
+ pcie_capability_read_word(root, PCI_EXP_LNKCTL2,
+ &tmp16);
+ tmp16 &= ~(PCI_EXP_LNKCTL2_ENTER_COMP |
+ PCI_EXP_LNKCTL2_TX_MARGIN);
+ tmp16 |= (bridge_cfg2 &
+ (PCI_EXP_LNKCTL2_ENTER_COMP |
+ PCI_EXP_LNKCTL2_TX_MARGIN));
+ pcie_capability_write_word(root,
+ PCI_EXP_LNKCTL2,
+ tmp16);
+
+ pcie_capability_read_word(adev->pdev,
+ PCI_EXP_LNKCTL2,
+ &tmp16);
+ tmp16 &= ~(PCI_EXP_LNKCTL2_ENTER_COMP |
+ PCI_EXP_LNKCTL2_TX_MARGIN);
+ tmp16 |= (gpu_cfg2 &
+ (PCI_EXP_LNKCTL2_ENTER_COMP |
+ PCI_EXP_LNKCTL2_TX_MARGIN));
+ pcie_capability_write_word(adev->pdev,
+ PCI_EXP_LNKCTL2,
+ tmp16);
tmp = RREG32_PCIE_PORT(PCIE_LC_CNTL4);
tmp &= ~LC_SET_QUIESCE;
@@ -1768,15 +1792,16 @@ static void si_pcie_gen3_enable(struct amdgpu_device *adev)
speed_cntl &= ~LC_FORCE_DIS_SW_SPEED_CHANGE;
WREG32_PCIE_PORT(PCIE_LC_SPEED_CNTL, speed_cntl);
- pci_read_config_word(adev->pdev, gpu_pos + PCI_EXP_LNKCTL2, &tmp16);
- tmp16 &= ~0xf;
+ pcie_capability_read_word(adev->pdev, PCI_EXP_LNKCTL2, &tmp16);
+ 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;
- pci_write_config_word(adev->pdev, gpu_pos + PCI_EXP_LNKCTL2, tmp16);
+ tmp16 |= PCI_EXP_LNKCTL2_TLS_2_5GT; /* gen1 */
+ pcie_capability_write_word(adev->pdev, PCI_EXP_LNKCTL2, tmp16);
speed_cntl = RREG32_PCIE_PORT(PCIE_LC_SPEED_CNTL);
speed_cntl |= LC_INITIATE_LINK_SPEED_CHANGE;
generated by cgit v1.2.3 (git 2.39.0) at 2025-01-06 13:11:00 +0300