include/asm-xen/xen-public/physdev.h

   1 /****************************************************************************
   2  * (c) 2004 - Rolf Neugebauer - Intel Research Cambridge
   3  * (c) 2004 - Keir Fraser - University of Cambridge
   4  ****************************************************************************
   5  * Description: Interface for domains to access physical devices on the PCI bus
   6  */
   7
   8 #ifndef __XEN_PUBLIC_PHYSDEV_H__
   9 #define __XEN_PUBLIC_PHYSDEV_H__
  10
  11 /* Commands to HYPERVISOR_physdev_op() */
  12 #define PHYSDEVOP_PCI_CFGREG_READ       0
  13 #define PHYSDEVOP_PCI_CFGREG_WRITE      1
  14 #define PHYSDEVOP_PCI_INITIALISE_DEVICE 2
  15 #define PHYSDEVOP_PCI_PROBE_ROOT_BUSES  3
  16 #define PHYSDEVOP_IRQ_UNMASK_NOTIFY     4
  17 #define PHYSDEVOP_IRQ_STATUS_QUERY      5
  18 #define PHYSDEVOP_SET_IOPL              6
  19 #define PHYSDEVOP_SET_IOBITMAP          7
  20
  21 /* Read from PCI configuration space. */
  22 typedef struct {
  23     /* IN */
  24     u32 bus;                          /*  0 */
  25     u32 dev;                          /*  4 */
  26     u32 func;                         /*  8 */
  27     u32 reg;                          /* 12 */
  28     u32 len;                          /* 16 */
  29     /* OUT */
  30     u32 value;                        /* 20 */
  31 } PACKED physdevop_pci_cfgreg_read_t; /* 24 bytes */
  32
  33 /* Write to PCI configuration space. */
  34 typedef struct {
  35     /* IN */
  36     u32 bus;                          /*  0 */
  37     u32 dev;                          /*  4 */
  38     u32 func;                         /*  8 */
  39     u32 reg;                          /* 12 */
  40     u32 len;                          /* 16 */
  41     u32 value;                        /* 20 */
  42 } PACKED physdevop_pci_cfgreg_write_t; /* 24 bytes */
  43
  44 /* Do final initialisation of a PCI device (e.g., last-moment IRQ routing). */
  45 typedef struct {
  46     /* IN */
  47     u32 bus;                          /*  0 */
  48     u32 dev;                          /*  4 */
  49     u32 func;                         /*  8 */
  50 } PACKED physdevop_pci_initialise_device_t; /* 12 bytes */
  51
  52 /* Find the root buses for subsequent scanning. */
  53 typedef struct {
  54     /* OUT */
  55     u32 busmask[256/32];              /*  0 */
  56 } PACKED physdevop_pci_probe_root_buses_t; /* 32 bytes */
  57
  58 typedef struct {
  59     /* IN */
  60     u32 irq;                          /*  0 */
  61     /* OUT */
  62 /* Need to call PHYSDEVOP_IRQ_UNMASK_NOTIFY when the IRQ has been serviced? */
  63 #define PHYSDEVOP_IRQ_NEEDS_UNMASK_NOTIFY (1<<0)
  64     u32 flags;                        /*  4 */
  65 } PACKED physdevop_irq_status_query_t; /* 8 bytes */
  66
  67 typedef struct {
  68     /* IN */
  69     u32 iopl;                         /*  0 */
  70 } PACKED physdevop_set_iopl_t; /* 4 bytes */
  71
  72 typedef struct {
  73     /* IN */
  74     memory_t bitmap;                  /*  0 */
  75     MEMORY_PADDING;
  76     u32      nr_ports;                /*  8 */
  77     u32      __pad0;                  /* 12 */
  78 } PACKED physdevop_set_iobitmap_t; /* 16 bytes */
  79
  80 typedef struct _physdev_op_st
  81 {
  82     u32 cmd;                          /*  0 */
  83     u32 __pad;                        /*  4 */
  84     union {                           /*  8 */
  85         physdevop_pci_cfgreg_read_t       pci_cfgreg_read;
  86         physdevop_pci_cfgreg_write_t      pci_cfgreg_write;
  87         physdevop_pci_initialise_device_t pci_initialise_device;
  88         physdevop_pci_probe_root_buses_t  pci_probe_root_buses;
  89         physdevop_irq_status_query_t      irq_status_query;
  90         physdevop_set_iopl_t              set_iopl;
  91         physdevop_set_iobitmap_t          set_iobitmap;
  92         u8                                __dummy[32];
  93     } PACKED u;
  94 } PACKED physdev_op_t; /* 40 bytes */
  95
  96 #endif /* __XEN_PUBLIC_PHYSDEV_H__ */
  97
  98 /*
  99  * Local variables:
 100  * mode: C
 101  * c-set-style: "BSD"
 102  * c-basic-offset: 4
 103  * tab-width: 4
 104  * indent-tabs-mode: nil
 105  * End:
 106  */