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Annotation of Gnu-Mach/xen/public/io/pciif.h, revision 1.1.1.1

1.1       root        1: /*
                      2:  * PCI Backend/Frontend Common Data Structures & Macros
                      3:  *
                      4:  * Permission is hereby granted, free of charge, to any person obtaining a copy
                      5:  * of this software and associated documentation files (the "Software"), to
                      6:  * deal in the Software without restriction, including without limitation the
                      7:  * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
                      8:  * sell copies of the Software, and to permit persons to whom the Software is
                      9:  * furnished to do so, subject to the following conditions:
                     10:  *
                     11:  * The above copyright notice and this permission notice shall be included in
                     12:  * all copies or substantial portions of the Software.
                     13:  *
                     14:  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
                     15:  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
                     16:  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
                     17:  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
                     18:  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
                     19:  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
                     20:  * DEALINGS IN THE SOFTWARE.
                     21:  *
                     22:  *   Author: Ryan Wilson <[email protected]>
                     23:  */
                     24: #ifndef __XEN_PCI_COMMON_H__
                     25: #define __XEN_PCI_COMMON_H__
                     26: 
                     27: /* Be sure to bump this number if you change this file */
                     28: #define XEN_PCI_MAGIC "7"
                     29: 
                     30: /* xen_pci_sharedinfo flags */
                     31: #define _XEN_PCIF_active     (0)
                     32: #define XEN_PCIF_active      (1<<_XEN_PCI_active)
                     33: 
                     34: /* xen_pci_op commands */
                     35: #define XEN_PCI_OP_conf_read    (0)
                     36: #define XEN_PCI_OP_conf_write   (1)
                     37: #define XEN_PCI_OP_enable_msi   (2)
                     38: #define XEN_PCI_OP_disable_msi  (3)
                     39: #define XEN_PCI_OP_enable_msix  (4)
                     40: #define XEN_PCI_OP_disable_msix (5)
                     41: 
                     42: /* xen_pci_op error numbers */
                     43: #define XEN_PCI_ERR_success          (0)
                     44: #define XEN_PCI_ERR_dev_not_found   (-1)
                     45: #define XEN_PCI_ERR_invalid_offset  (-2)
                     46: #define XEN_PCI_ERR_access_denied   (-3)
                     47: #define XEN_PCI_ERR_not_implemented (-4)
                     48: /* XEN_PCI_ERR_op_failed - backend failed to complete the operation */
                     49: #define XEN_PCI_ERR_op_failed       (-5)
                     50: 
                     51: /*
                     52:  * it should be PAGE_SIZE-sizeof(struct xen_pci_op))/sizeof(struct msix_entry))
                     53:  * Should not exceed 128
                     54:  */
                     55: #define SH_INFO_MAX_VEC     128
                     56: 
                     57: struct xen_msix_entry {
                     58:     uint16_t vector;
                     59:     uint16_t entry;
                     60: };
                     61: struct xen_pci_op {
                     62:     /* IN: what action to perform: XEN_PCI_OP_* */
                     63:     uint32_t cmd;
                     64: 
                     65:     /* OUT: will contain an error number (if any) from errno.h */
                     66:     int32_t err;
                     67: 
                     68:     /* IN: which device to touch */
                     69:     uint32_t domain; /* PCI Domain/Segment */
                     70:     uint32_t bus;
                     71:     uint32_t devfn;
                     72: 
                     73:     /* IN: which configuration registers to touch */
                     74:     int32_t offset;
                     75:     int32_t size;
                     76: 
                     77:     /* IN/OUT: Contains the result after a READ or the value to WRITE */
                     78:     uint32_t value;
                     79:     /* IN: Contains extra infor for this operation */
                     80:     uint32_t info;
                     81:     /*IN:  param for msi-x */
                     82:     struct xen_msix_entry msix_entries[SH_INFO_MAX_VEC];
                     83: };
                     84: 
                     85: struct xen_pci_sharedinfo {
                     86:     /* flags - XEN_PCIF_* */
                     87:     uint32_t flags;
                     88:     struct xen_pci_op op;
                     89: };
                     90: 
                     91: #endif /* __XEN_PCI_COMMON_H__ */
                     92: 
                     93: /*
                     94:  * Local variables:
                     95:  * mode: C
                     96:  * c-set-style: "BSD"
                     97:  * c-basic-offset: 4
                     98:  * tab-width: 4
                     99:  * indent-tabs-mode: nil
                    100:  * End:
                    101:  */

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