diff options
Diffstat (limited to 'gpxe/src/include/gpxe/virtio-pci.h')
-rw-r--r-- | gpxe/src/include/gpxe/virtio-pci.h | 97 |
1 files changed, 0 insertions, 97 deletions
diff --git a/gpxe/src/include/gpxe/virtio-pci.h b/gpxe/src/include/gpxe/virtio-pci.h deleted file mode 100644 index f0c17e8d..00000000 --- a/gpxe/src/include/gpxe/virtio-pci.h +++ /dev/null @@ -1,97 +0,0 @@ -#ifndef _VIRTIO_PCI_H_ -# define _VIRTIO_PCI_H_ - -/* 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 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); -} - -int vp_find_vq(unsigned int ioaddr, int queue_index, - struct vring_virtqueue *vq); -#endif /* _VIRTIO_PCI_H_ */ |