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Lines 604-619
static int vmd_enable_domain(struct vmd_dev *vmd, unsigned long features)
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/* |
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/* |
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* Certain VMD devices may have a root port configuration option which |
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* Certain VMD devices may have a root port configuration option which |
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* limits the bus range to between 0-127 or 128-255 |
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* limits the bus range to between 0-127, 128-255, or 224-255 |
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*/ |
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*/ |
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if (features & VMD_FEAT_HAS_BUS_RESTRICTIONS) { |
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if (features & VMD_FEAT_HAS_BUS_RESTRICTIONS) { |
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u32 vmcap, vmconfig; |
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u16 reg16; |
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pci_read_config_dword(vmd->dev, PCI_REG_VMCAP, &vmcap); |
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pci_read_config_word(vmd->dev, PCI_REG_VMCAP, ®16); |
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pci_read_config_dword(vmd->dev, PCI_REG_VMCONFIG, &vmconfig); |
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if (BUS_RESTRICT_CAP(reg16)) { |
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if (BUS_RESTRICT_CAP(vmcap) && |
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pci_read_config_word(vmd->dev, PCI_REG_VMCONFIG, |
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(BUS_RESTRICT_CFG(vmconfig) == 0x1)) |
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®16); |
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vmd->busn_start = 128; |
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switch (BUS_RESTRICT_CFG(reg16)) { |
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case 1: |
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vmd->busn_start = 128; |
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break; |
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case 2: |
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vmd->busn_start = 224; |
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break; |
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case 3: |
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pci_err(vmd->dev, "Unknown Bus Offset Setting\n"); |
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return -ENODEV; |
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default: |
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break; |
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} |
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} |
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} |
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} |
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res = &vmd->dev->resource[VMD_CFGBAR]; |
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res = &vmd->dev->resource[VMD_CFGBAR]; |
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