diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_device.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 58 |
1 files changed, 46 insertions, 12 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c index 384272603b21..4f8fb4ecde34 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c @@ -3618,6 +3618,38 @@ retry: /* Rest of adevs pre asic reset from XGMI hive. */ return r; } +static void amdgpu_device_get_min_pci_speed_width(struct amdgpu_device *adev, + enum pci_bus_speed *speed, + enum pcie_link_width *width) +{ + struct pci_dev *pdev = adev->pdev; + enum pci_bus_speed cur_speed; + enum pcie_link_width cur_width; + + *speed = PCI_SPEED_UNKNOWN; + *width = PCIE_LNK_WIDTH_UNKNOWN; + + while (pdev) { + cur_speed = pcie_get_speed_cap(pdev); + cur_width = pcie_get_width_cap(pdev); + + if (cur_speed != PCI_SPEED_UNKNOWN) { + if (*speed == PCI_SPEED_UNKNOWN) + *speed = cur_speed; + else if (cur_speed < *speed) + *speed = cur_speed; + } + + if (cur_width != PCIE_LNK_WIDTH_UNKNOWN) { + if (*width == PCIE_LNK_WIDTH_UNKNOWN) + *width = cur_width; + else if (cur_width < *width) + *width = cur_width; + } + pdev = pci_upstream_bridge(pdev); + } +} + /** * amdgpu_device_get_pcie_info - fence pcie info about the PCIE slot * @@ -3630,8 +3662,8 @@ retry: /* Rest of adevs pre asic reset from XGMI hive. */ static void amdgpu_device_get_pcie_info(struct amdgpu_device *adev) { struct pci_dev *pdev; - enum pci_bus_speed speed_cap; - enum pcie_link_width link_width; + enum pci_bus_speed speed_cap, platform_speed_cap; + enum pcie_link_width platform_link_width; if (amdgpu_pcie_gen_cap) adev->pm.pcie_gen_mask = amdgpu_pcie_gen_cap; @@ -3648,6 +3680,12 @@ static void amdgpu_device_get_pcie_info(struct amdgpu_device *adev) return; } + if (adev->pm.pcie_gen_mask && adev->pm.pcie_mlw_mask) + return; + + amdgpu_device_get_min_pci_speed_width(adev, &platform_speed_cap, + &platform_link_width); + if (adev->pm.pcie_gen_mask == 0) { /* asic caps */ pdev = adev->pdev; @@ -3673,22 +3711,20 @@ static void amdgpu_device_get_pcie_info(struct amdgpu_device *adev) adev->pm.pcie_gen_mask |= CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN1; } /* platform caps */ - pdev = adev->ddev->pdev->bus->self; - speed_cap = pcie_get_speed_cap(pdev); - if (speed_cap == PCI_SPEED_UNKNOWN) { + if (platform_speed_cap == PCI_SPEED_UNKNOWN) { adev->pm.pcie_gen_mask |= (CAIL_PCIE_LINK_SPEED_SUPPORT_GEN1 | CAIL_PCIE_LINK_SPEED_SUPPORT_GEN2); } else { - if (speed_cap == PCIE_SPEED_16_0GT) + if (platform_speed_cap == PCIE_SPEED_16_0GT) adev->pm.pcie_gen_mask |= (CAIL_PCIE_LINK_SPEED_SUPPORT_GEN1 | CAIL_PCIE_LINK_SPEED_SUPPORT_GEN2 | CAIL_PCIE_LINK_SPEED_SUPPORT_GEN3 | CAIL_PCIE_LINK_SPEED_SUPPORT_GEN4); - else if (speed_cap == PCIE_SPEED_8_0GT) + else if (platform_speed_cap == PCIE_SPEED_8_0GT) adev->pm.pcie_gen_mask |= (CAIL_PCIE_LINK_SPEED_SUPPORT_GEN1 | CAIL_PCIE_LINK_SPEED_SUPPORT_GEN2 | CAIL_PCIE_LINK_SPEED_SUPPORT_GEN3); - else if (speed_cap == PCIE_SPEED_5_0GT) + else if (platform_speed_cap == PCIE_SPEED_5_0GT) adev->pm.pcie_gen_mask |= (CAIL_PCIE_LINK_SPEED_SUPPORT_GEN1 | CAIL_PCIE_LINK_SPEED_SUPPORT_GEN2); else @@ -3697,12 +3733,10 @@ static void amdgpu_device_get_pcie_info(struct amdgpu_device *adev) } } if (adev->pm.pcie_mlw_mask == 0) { - pdev = adev->ddev->pdev->bus->self; - link_width = pcie_get_width_cap(pdev); - if (link_width == PCIE_LNK_WIDTH_UNKNOWN) { + if (platform_link_width == PCIE_LNK_WIDTH_UNKNOWN) { adev->pm.pcie_mlw_mask |= AMDGPU_DEFAULT_PCIE_MLW_MASK; } else { - switch (link_width) { + switch (platform_link_width) { case PCIE_LNK_X32: adev->pm.pcie_mlw_mask = (CAIL_PCIE_LINK_WIDTH_SUPPORT_X32 | CAIL_PCIE_LINK_WIDTH_SUPPORT_X16 | |
