xref: /openbmc/qemu/hw/xen/xen-host-pci-device.h (revision 05caa062)
1 #ifndef XEN_HOST_PCI_DEVICE_H
2 #define XEN_HOST_PCI_DEVICE_H
3 
4 #include "hw/pci/pci.h"
5 
6 enum {
7     XEN_HOST_PCI_REGION_TYPE_IO = 1 << 1,
8     XEN_HOST_PCI_REGION_TYPE_MEM = 1 << 2,
9     XEN_HOST_PCI_REGION_TYPE_PREFETCH = 1 << 3,
10     XEN_HOST_PCI_REGION_TYPE_MEM_64 = 1 << 4,
11 };
12 
13 typedef struct XenHostPCIIORegion {
14     pcibus_t base_addr;
15     pcibus_t size;
16     uint8_t type;
17     uint8_t bus_flags; /* Bus-specific bits */
18 } XenHostPCIIORegion;
19 
20 typedef struct XenHostPCIDevice {
21     uint16_t domain;
22     uint8_t bus;
23     uint8_t dev;
24     uint8_t func;
25 
26     /* different from the above in case of stubdomain */
27     uint16_t local_domain;
28     uint8_t local_bus;
29     uint8_t local_dev;
30     uint8_t local_func;
31 
32     uint16_t vendor_id;
33     uint16_t device_id;
34     uint32_t class_code;
35     int irq;
36 
37     XenHostPCIIORegion io_regions[PCI_NUM_REGIONS - 1];
38     XenHostPCIIORegion rom;
39 
40     bool is_virtfn;
41 
42     int config_fd;
43 } XenHostPCIDevice;
44 
45 void xen_host_pci_device_get(XenHostPCIDevice *d, uint16_t domain,
46                              uint8_t bus, uint8_t dev, uint8_t func,
47                              Error **errp);
48 void xen_host_pci_device_put(XenHostPCIDevice *pci_dev);
49 bool xen_host_pci_device_closed(XenHostPCIDevice *d);
50 
51 int xen_host_pci_get_byte(XenHostPCIDevice *d, int pos, uint8_t *p);
52 int xen_host_pci_get_word(XenHostPCIDevice *d, int pos, uint16_t *p);
53 int xen_host_pci_get_long(XenHostPCIDevice *d, int pos, uint32_t *p);
54 int xen_host_pci_get_block(XenHostPCIDevice *d, int pos, uint8_t *buf,
55                            int len);
56 int xen_host_pci_set_byte(XenHostPCIDevice *d, int pos, uint8_t data);
57 int xen_host_pci_set_word(XenHostPCIDevice *d, int pos, uint16_t data);
58 int xen_host_pci_set_long(XenHostPCIDevice *d, int pos, uint32_t data);
59 int xen_host_pci_set_block(XenHostPCIDevice *d, int pos, uint8_t *buf,
60                            int len);
61 
62 int xen_host_pci_find_ext_cap_offset(XenHostPCIDevice *s, uint32_t cap);
63 
64 #endif /* XEN_HOST_PCI_DEVICE_H */
65