| /* |
| * PCI Backend/Frontend Common Data Structures & Macros |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a copy |
| * of this software and associated documentation files (the "Software"), to |
| * deal in the Software without restriction, including without limitation the |
| * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or |
| * sell copies of the Software, and to permit persons to whom the Software is |
| * furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
| * DEALINGS IN THE SOFTWARE. |
| * |
| * Author: Ryan Wilson <hap9@epoch.ncsc.mil> |
| */ |
| #ifndef __XEN_PCI_COMMON_H__ |
| #define __XEN_PCI_COMMON_H__ |
| |
| /* Be sure to bump this number if you change this file */ |
| #define XEN_PCI_MAGIC "7" |
| |
| /* xen_pci_sharedinfo flags */ |
| #define _XEN_PCIF_active (0) |
| #define XEN_PCIF_active (1<<_XEN_PCIF_active) |
| #define _XEN_PCIB_AERHANDLER (1) |
| #define XEN_PCIB_AERHANDLER (1<<_XEN_PCIB_AERHANDLER) |
| #define _XEN_PCIB_active (2) |
| #define XEN_PCIB_active (1<<_XEN_PCIB_active) |
| |
| /* xen_pci_op commands */ |
| #define XEN_PCI_OP_conf_read (0) |
| #define XEN_PCI_OP_conf_write (1) |
| #define XEN_PCI_OP_enable_msi (2) |
| #define XEN_PCI_OP_disable_msi (3) |
| #define XEN_PCI_OP_enable_msix (4) |
| #define XEN_PCI_OP_disable_msix (5) |
| #define XEN_PCI_OP_aer_detected (6) |
| #define XEN_PCI_OP_aer_resume (7) |
| #define XEN_PCI_OP_aer_mmio (8) |
| #define XEN_PCI_OP_aer_slotreset (9) |
| |
| /* xen_pci_op error numbers */ |
| #define XEN_PCI_ERR_success (0) |
| #define XEN_PCI_ERR_dev_not_found (-1) |
| #define XEN_PCI_ERR_invalid_offset (-2) |
| #define XEN_PCI_ERR_access_denied (-3) |
| #define XEN_PCI_ERR_not_implemented (-4) |
| /* XEN_PCI_ERR_op_failed - backend failed to complete the operation */ |
| #define XEN_PCI_ERR_op_failed (-5) |
| |
| /* |
| * it should be PAGE_SIZE-sizeof(struct xen_pci_op))/sizeof(struct msix_entry)) |
| * Should not exceed 128 |
| */ |
| #define SH_INFO_MAX_VEC 128 |
| |
| struct xen_msix_entry { |
| uint16_t vector; |
| uint16_t entry; |
| }; |
| struct xen_pci_op { |
| /* IN: what action to perform: XEN_PCI_OP_* */ |
| uint32_t cmd; |
| |
| /* OUT: will contain an error number (if any) from errno.h */ |
| int32_t err; |
| |
| /* IN: which device to touch */ |
| uint32_t domain; /* PCI Domain/Segment */ |
| uint32_t bus; |
| uint32_t devfn; |
| |
| /* IN: which configuration registers to touch */ |
| int32_t offset; |
| int32_t size; |
| |
| /* IN/OUT: Contains the result after a READ or the value to WRITE */ |
| uint32_t value; |
| /* IN: Contains extra infor for this operation */ |
| uint32_t info; |
| /*IN: param for msi-x */ |
| struct xen_msix_entry msix_entries[SH_INFO_MAX_VEC]; |
| }; |
| |
| /*used for pcie aer handling*/ |
| struct xen_pcie_aer_op { |
| /* IN: what action to perform: XEN_PCI_OP_* */ |
| uint32_t cmd; |
| /*IN/OUT: return aer_op result or carry error_detected state as input*/ |
| int32_t err; |
| |
| /* IN: which device to touch */ |
| uint32_t domain; /* PCI Domain/Segment*/ |
| uint32_t bus; |
| uint32_t devfn; |
| }; |
| struct xen_pci_sharedinfo { |
| /* flags - XEN_PCIF_* */ |
| uint32_t flags; |
| struct xen_pci_op op; |
| struct xen_pcie_aer_op aer_op; |
| }; |
| |
| #endif /* __XEN_PCI_COMMON_H__ */ |