diff options
| author | Joerg Roedel <joerg.roedel@amd.com> | 2011-09-27 15:57:15 +0200 |
|---|---|---|
| committer | Jesse Barnes <jbarnes@virtuousgeek.org> | 2011-10-14 09:05:34 -0700 |
| commit | c320b976d7837c561ce4aa49dfe0a64f0e527ce4 (patch) | |
| tree | 09d12286e3c63ab15a472468795204eeb154f83c /include/linux/pci_regs.h | |
| parent | d4c0636c2107010f0ef8c4dfbb1d6368ae3b3ed9 (diff) | |
PCI: Add implementation for PRI capability
Implement the necessary functions to handle PRI capabilities
on PCIe devices. With PRI devices behind an IOMMU can signal
page fault conditions to software and recover from such
faults.
Reviewed-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'include/linux/pci_regs.h')
| -rw-r--r-- | include/linux/pci_regs.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/include/linux/pci_regs.h b/include/linux/pci_regs.h index e8840964aca..7fc32aff94d 100644 --- a/include/linux/pci_regs.h +++ b/include/linux/pci_regs.h @@ -663,6 +663,18 @@ #define PCI_ATS_CTRL_STU(x) ((x) & 0x1f) /* Smallest Translation Unit */ #define PCI_ATS_MIN_STU 12 /* shift of minimum STU block */ +/* Page Request Interface */ +#define PCI_PRI_CAP 0x13 /* PRI capability ID */ +#define PCI_PRI_CONTROL_OFF 0x04 /* Offset of control register */ +#define PCI_PRI_STATUS_OFF 0x06 /* Offset of status register */ +#define PCI_PRI_ENABLE 0x0001 /* Enable mask */ +#define PCI_PRI_RESET 0x0002 /* Reset bit mask */ +#define PCI_PRI_STATUS_RF 0x0001 /* Request Failure */ +#define PCI_PRI_STATUS_UPRGI 0x0002 /* Unexpected PRG index */ +#define PCI_PRI_STATUS_STOPPED 0x0100 /* PRI Stopped */ +#define PCI_PRI_MAX_REQ_OFF 0x08 /* Cap offset for max reqs supported */ +#define PCI_PRI_ALLOC_REQ_OFF 0x0c /* Cap offset for max reqs allowed */ + /* Single Root I/O Virtualization */ #define PCI_SRIOV_CAP 0x04 /* SR-IOV Capabilities */ #define PCI_SRIOV_CAP_VFM 0x01 /* VF Migration Capable */ |