diff options
Diffstat (limited to 'xen/include/public/physdev.h')
| -rw-r--r-- | xen/include/public/physdev.h | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/xen/include/public/physdev.h b/xen/include/public/physdev.h new file mode 100644 index 0000000000..ab1af9998a --- /dev/null +++ b/xen/include/public/physdev.h @@ -0,0 +1,80 @@ +/* -*- Mode:C; c-basic-offset:4; tab-width:4 -*- + **************************************************************************** + * (c) 2004 - Rolf Neugebauer - Intel Research Cambridge + * (c) 2004 - Keir Fraser - University of Cambridge + **************************************************************************** + * Description: Interface for domains to access physical devices on the PCI bus + */ + +#ifndef __XEN_PUBLIC_PHYSDEV_H__ +#define __XEN_PUBLIC_PHYSDEV_H__ + +/* Commands to HYPERVISOR_physdev_op() */ +#define PHYSDEVOP_PCI_CFGREG_READ 0 +#define PHYSDEVOP_PCI_CFGREG_WRITE 1 +#define PHYSDEVOP_PCI_INITIALISE_DEVICE 2 +#define PHYSDEVOP_PCI_PROBE_ROOT_BUSES 3 +#define PHYSDEVOP_IRQ_UNMASK_NOTIFY 4 +#define PHYSDEVOP_IRQ_STATUS_QUERY 5 + +/* Read from PCI configuration space. */ +typedef struct { + /* IN */ + u32 bus; /* 0 */ + u32 dev; /* 4 */ + u32 func; /* 8 */ + u32 reg; /* 12 */ + u32 len; /* 16 */ + /* OUT */ + u32 value; /* 20 */ +} PACKED physdevop_pci_cfgreg_read_t; /* 24 bytes */ + +/* Write to PCI configuration space. */ +typedef struct { + /* IN */ + u32 bus; /* 0 */ + u32 dev; /* 4 */ + u32 func; /* 8 */ + u32 reg; /* 12 */ + u32 len; /* 16 */ + u32 value; /* 20 */ +} PACKED physdevop_pci_cfgreg_write_t; /* 24 bytes */ + +/* Do final initialisation of a PCI device (e.g., last-moment IRQ routing). */ +typedef struct { + /* IN */ + u32 bus; /* 0 */ + u32 dev; /* 4 */ + u32 func; /* 8 */ +} PACKED physdevop_pci_initialise_device_t; /* 12 bytes */ + +/* Find the root buses for subsequent scanning. */ +typedef struct { + /* OUT */ + u32 busmask[256/32]; /* 0 */ +} PACKED physdevop_pci_probe_root_buses_t; /* 32 bytes */ + +typedef struct { + /* IN */ + u32 irq; /* 0 */ + /* OUT */ +/* Need to call PHYSDEVOP_IRQ_UNMASK_NOTIFY when the IRQ has been serviced? */ +#define PHYSDEVOP_IRQ_NEEDS_UNMASK_NOTIFY (1<<0) + u32 flags; /* 4 */ +} PACKED physdevop_irq_status_query_t; /* 8 bytes */ + +typedef struct _physdev_op_st +{ + u32 cmd; /* 0 */ + u32 __pad; /* 4 */ + union { /* 8 */ + physdevop_pci_cfgreg_read_t pci_cfgreg_read; + physdevop_pci_cfgreg_write_t pci_cfgreg_write; + physdevop_pci_initialise_device_t pci_initialise_device; + physdevop_pci_probe_root_buses_t pci_probe_root_buses; + physdevop_irq_status_query_t irq_status_query; + u8 __dummy[32]; + } PACKED u; +} PACKED physdev_op_t; /* 40 bytes */ + +#endif /* __XEN_PUBLIC_PHYSDEV_H__ */ |