FreeBSD/Linux Kernel Cross Reference
sys/xen/interface/io/pciif.h

     /*
      * 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__ */
   
   /*
    * Local variables:
    * mode: C
    * c-set-style: "BSD"
    * c-basic-offset: 4
    * tab-width: 4
    * indent-tabs-mode: nil
    * End:
    */

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