1181624Skmacy/* 2181624Skmacy * PCI Backend/Frontend Common Data Structures & Macros 3181624Skmacy * 4181624Skmacy * Permission is hereby granted, free of charge, to any person obtaining a copy 5181624Skmacy * of this software and associated documentation files (the "Software"), to 6181624Skmacy * deal in the Software without restriction, including without limitation the 7181624Skmacy * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or 8181624Skmacy * sell copies of the Software, and to permit persons to whom the Software is 9181624Skmacy * furnished to do so, subject to the following conditions: 10181624Skmacy * 11181624Skmacy * The above copyright notice and this permission notice shall be included in 12181624Skmacy * all copies or substantial portions of the Software. 13181624Skmacy * 14181624Skmacy * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15181624Skmacy * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16181624Skmacy * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 17181624Skmacy * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 18181624Skmacy * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 19181624Skmacy * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 20181624Skmacy * DEALINGS IN THE SOFTWARE. 21181624Skmacy * 22181624Skmacy * Author: Ryan Wilson <hap9@epoch.ncsc.mil> 23181624Skmacy */ 24181624Skmacy#ifndef __XEN_PCI_COMMON_H__ 25181624Skmacy#define __XEN_PCI_COMMON_H__ 26181624Skmacy 27181624Skmacy/* Be sure to bump this number if you change this file */ 28181624Skmacy#define XEN_PCI_MAGIC "7" 29181624Skmacy 30181624Skmacy/* xen_pci_sharedinfo flags */ 31181624Skmacy#define _XEN_PCIF_active (0) 32251767Sgibbs#define XEN_PCIF_active (1<<_XEN_PCIF_active) 33251767Sgibbs#define _XEN_PCIB_AERHANDLER (1) 34251767Sgibbs#define XEN_PCIB_AERHANDLER (1<<_XEN_PCIB_AERHANDLER) 35251767Sgibbs#define _XEN_PCIB_active (2) 36251767Sgibbs#define XEN_PCIB_active (1<<_XEN_PCIB_active) 37181624Skmacy 38181624Skmacy/* xen_pci_op commands */ 39251767Sgibbs#define XEN_PCI_OP_conf_read (0) 40251767Sgibbs#define XEN_PCI_OP_conf_write (1) 41251767Sgibbs#define XEN_PCI_OP_enable_msi (2) 42251767Sgibbs#define XEN_PCI_OP_disable_msi (3) 43251767Sgibbs#define XEN_PCI_OP_enable_msix (4) 44251767Sgibbs#define XEN_PCI_OP_disable_msix (5) 45251767Sgibbs#define XEN_PCI_OP_aer_detected (6) 46251767Sgibbs#define XEN_PCI_OP_aer_resume (7) 47251767Sgibbs#define XEN_PCI_OP_aer_mmio (8) 48251767Sgibbs#define XEN_PCI_OP_aer_slotreset (9) 49288917Sroyger#define XEN_PCI_OP_enable_multi_msi (10) 50181624Skmacy 51181624Skmacy/* xen_pci_op error numbers */ 52181624Skmacy#define XEN_PCI_ERR_success (0) 53181624Skmacy#define XEN_PCI_ERR_dev_not_found (-1) 54181624Skmacy#define XEN_PCI_ERR_invalid_offset (-2) 55181624Skmacy#define XEN_PCI_ERR_access_denied (-3) 56181624Skmacy#define XEN_PCI_ERR_not_implemented (-4) 57181624Skmacy/* XEN_PCI_ERR_op_failed - backend failed to complete the operation */ 58181624Skmacy#define XEN_PCI_ERR_op_failed (-5) 59181624Skmacy 60183375Skmacy/* 61183375Skmacy * it should be PAGE_SIZE-sizeof(struct xen_pci_op))/sizeof(struct msix_entry)) 62183375Skmacy * Should not exceed 128 63183375Skmacy */ 64183375Skmacy#define SH_INFO_MAX_VEC 128 65183375Skmacy 66183375Skmacystruct xen_msix_entry { 67183375Skmacy uint16_t vector; 68183375Skmacy uint16_t entry; 69183375Skmacy}; 70181624Skmacystruct xen_pci_op { 71181624Skmacy /* IN: what action to perform: XEN_PCI_OP_* */ 72181624Skmacy uint32_t cmd; 73181624Skmacy 74181624Skmacy /* OUT: will contain an error number (if any) from errno.h */ 75181624Skmacy int32_t err; 76181624Skmacy 77181624Skmacy /* IN: which device to touch */ 78181624Skmacy uint32_t domain; /* PCI Domain/Segment */ 79181624Skmacy uint32_t bus; 80181624Skmacy uint32_t devfn; 81181624Skmacy 82181624Skmacy /* IN: which configuration registers to touch */ 83181624Skmacy int32_t offset; 84181624Skmacy int32_t size; 85181624Skmacy 86181624Skmacy /* IN/OUT: Contains the result after a READ or the value to WRITE */ 87181624Skmacy uint32_t value; 88183375Skmacy /* IN: Contains extra infor for this operation */ 89183375Skmacy uint32_t info; 90183375Skmacy /*IN: param for msi-x */ 91183375Skmacy struct xen_msix_entry msix_entries[SH_INFO_MAX_VEC]; 92181624Skmacy}; 93181624Skmacy 94251767Sgibbs/*used for pcie aer handling*/ 95251767Sgibbsstruct xen_pcie_aer_op 96251767Sgibbs{ 97251767Sgibbs 98251767Sgibbs /* IN: what action to perform: XEN_PCI_OP_* */ 99251767Sgibbs uint32_t cmd; 100251767Sgibbs /*IN/OUT: return aer_op result or carry error_detected state as input*/ 101251767Sgibbs int32_t err; 102251767Sgibbs 103251767Sgibbs /* IN: which device to touch */ 104251767Sgibbs uint32_t domain; /* PCI Domain/Segment*/ 105251767Sgibbs uint32_t bus; 106251767Sgibbs uint32_t devfn; 107251767Sgibbs}; 108181624Skmacystruct xen_pci_sharedinfo { 109181624Skmacy /* flags - XEN_PCIF_* */ 110181624Skmacy uint32_t flags; 111181624Skmacy struct xen_pci_op op; 112251767Sgibbs struct xen_pcie_aer_op aer_op; 113181624Skmacy}; 114181624Skmacy 115181624Skmacy#endif /* __XEN_PCI_COMMON_H__ */ 116181624Skmacy 117181624Skmacy/* 118181624Skmacy * Local variables: 119181624Skmacy * mode: C 120288917Sroyger * c-file-style: "BSD" 121181624Skmacy * c-basic-offset: 4 122181624Skmacy * tab-width: 4 123181624Skmacy * indent-tabs-mode: nil 124181624Skmacy * End: 125181624Skmacy */ 126