ref: 20f516bf800e367dbb3cbec0fc892874b205b625
dir: /sys/src/9/port/virtio10.h/
enum {
/* §2.1 Device Status Field */
Sacknowledge = 1,
Sdriver = 2,
Sdriverok = 4,
Sfeaturesok = 8,
Sfailed = 128,
/* feat[1] bits */
Fversion1 = 1<<(32-32),
Vconf_devfeatsel = 0,
Vconf_devfeat = 4,
Vconf_drvfeatsel = 8,
Vconf_drvfeat = 12,
Vconf_msixcfg = 16,
Vconf_nqueues = 18,
Vconf_status = 20,
Vconf_cfggen = 21,
Vconf_queuesel = 22,
Vconf_queuesize = 24,
Vconf_queuemsixvect = 26,
Vconf_queueenable = 28,
Vconf_queuenotifyoff = 30,
Vconf_queuedesc = 32,
Vconf_queueavail = 40,
Vconf_queueused = 48,
Vconf_sz = 56,
Vio_port = 0,
Vio_mem,
};
typedef struct Vio Vio;
struct Vio
{
int type;
union {
int port;
uchar *mem;
};
};
typedef struct Vring Vring;
struct Vring
{
u16int flags;
u16int idx;
};
typedef struct Vdesc Vdesc;
struct Vdesc
{
u64int addr;
u32int len;
u16int flags;
u16int next;
};
typedef struct Vused Vused;
struct Vused
{
u32int id;
u32int len;
};
/* machine dependent functions
for most archs this is provided by port/virtio10mem.c which does pci mem bar only
except for x86 which has to deal with io space and mem space in pc/virtio10pc.c
*/
u8int vin8(Vio *, int);
u16int vin16(Vio *, int);
u32int vin32(Vio *, int);
u64int vin64(Vio *, int);
void vout8(Vio *, int, u8int);
void vout16(Vio *, int, u16int);
void vout32(Vio *, int, u32int);
void vout64(Vio *, int, u64int);
void virtiounmap(Vio *, usize);
Vio* virtiomapregs(Pcidev *, int, int, Vio *);