diff options
author | 2015-08-28 09:58:54 +0800 | |
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committer | 2015-09-01 12:44:00 +0800 | |
commit | e44e3482bdb4d0ebde2d8b41830ac2cdb07948fb (patch) | |
tree | 66b09f592c55df2878107a468a91d21506104d3f /qemu/roms/seabios/src/hw/virtio-pci.h | |
parent | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (diff) |
Add qemu 2.4.0
Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5
Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>
Diffstat (limited to 'qemu/roms/seabios/src/hw/virtio-pci.h')
-rw-r--r-- | qemu/roms/seabios/src/hw/virtio-pci.h | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/qemu/roms/seabios/src/hw/virtio-pci.h b/qemu/roms/seabios/src/hw/virtio-pci.h new file mode 100644 index 000000000..bc04b039e --- /dev/null +++ b/qemu/roms/seabios/src/hw/virtio-pci.h @@ -0,0 +1,105 @@ +#ifndef _VIRTIO_PCI_H +#define _VIRTIO_PCI_H + +#include "x86.h" // inl + +/* A 32-bit r/o bitmask of the features supported by the host */ +#define VIRTIO_PCI_HOST_FEATURES 0 + +/* A 32-bit r/w bitmask of features activated by the guest */ +#define VIRTIO_PCI_GUEST_FEATURES 4 + +/* A 32-bit r/w PFN for the currently selected queue */ +#define VIRTIO_PCI_QUEUE_PFN 8 + +/* A 16-bit r/o queue size for the currently selected queue */ +#define VIRTIO_PCI_QUEUE_NUM 12 + +/* A 16-bit r/w queue selector */ +#define VIRTIO_PCI_QUEUE_SEL 14 + +/* A 16-bit r/w queue notifier */ +#define VIRTIO_PCI_QUEUE_NOTIFY 16 + +/* An 8-bit device status register. */ +#define VIRTIO_PCI_STATUS 18 + +/* An 8-bit r/o interrupt status register. Reading the value will return the + * current contents of the ISR and will also clear it. This is effectively + * a read-and-acknowledge. */ +#define VIRTIO_PCI_ISR 19 + +/* The bit of the ISR which indicates a device configuration change. */ +#define VIRTIO_PCI_ISR_CONFIG 0x2 + +/* The remaining space is defined by each driver as the per-driver + * configuration space */ +#define VIRTIO_PCI_CONFIG 20 + +/* Virtio ABI version, this must match exactly */ +#define VIRTIO_PCI_ABI_VERSION 0 + +static inline u32 vp_get_features(unsigned int ioaddr) +{ + return inl(ioaddr + VIRTIO_PCI_HOST_FEATURES); +} + +static inline void vp_set_features(unsigned int ioaddr, u32 features) +{ + outl(features, ioaddr + VIRTIO_PCI_GUEST_FEATURES); +} + +static inline void vp_get(unsigned int ioaddr, unsigned offset, + void *buf, unsigned len) +{ + u8 *ptr = buf; + unsigned i; + + for (i = 0; i < len; i++) + ptr[i] = inb(ioaddr + VIRTIO_PCI_CONFIG + offset + i); +} + +static inline u8 vp_get_status(unsigned int ioaddr) +{ + return inb(ioaddr + VIRTIO_PCI_STATUS); +} + +static inline void vp_set_status(unsigned int ioaddr, u8 status) +{ + if (status == 0) /* reset */ + return; + outb(status, ioaddr + VIRTIO_PCI_STATUS); +} + +static inline u8 vp_get_isr(unsigned int ioaddr) +{ + return inb(ioaddr + VIRTIO_PCI_ISR); +} + +static inline void vp_reset(unsigned int ioaddr) +{ + outb(0, ioaddr + VIRTIO_PCI_STATUS); + (void)inb(ioaddr + VIRTIO_PCI_ISR); +} + +static inline void vp_notify(unsigned int ioaddr, int queue_index) +{ + outw(queue_index, ioaddr + VIRTIO_PCI_QUEUE_NOTIFY); +} + +static inline void vp_del_vq(unsigned int ioaddr, int queue_index) +{ + /* select the queue */ + + outw(queue_index, ioaddr + VIRTIO_PCI_QUEUE_SEL); + + /* deactivate the queue */ + + outl(0, ioaddr + VIRTIO_PCI_QUEUE_PFN); +} + +struct vring_virtqueue; +u16 vp_init_simple(u16 bdf); +int vp_find_vq(unsigned int ioaddr, int queue_index, + struct vring_virtqueue **p_vq); +#endif /* _VIRTIO_PCI_H_ */ |