diff options
Diffstat (limited to 'qemu/roms/seabios/src/hw/virtio-pci.h')
-rw-r--r-- | qemu/roms/seabios/src/hw/virtio-pci.h | 211 |
1 files changed, 0 insertions, 211 deletions
diff --git a/qemu/roms/seabios/src/hw/virtio-pci.h b/qemu/roms/seabios/src/hw/virtio-pci.h deleted file mode 100644 index b11c3555e..000000000 --- a/qemu/roms/seabios/src/hw/virtio-pci.h +++ /dev/null @@ -1,211 +0,0 @@ -#ifndef _VIRTIO_PCI_H -#define _VIRTIO_PCI_H - -#include "x86.h" // inl -#include "biosvar.h" // GET_LOWFLAT - -/* The bit of the ISR which indicates a device configuration change. */ -#define VIRTIO_PCI_ISR_CONFIG 0x2 - -/* Virtio ABI version, this must match exactly */ -#define VIRTIO_PCI_ABI_VERSION 0 - -/* --- virtio 0.9.5 (legacy) struct --------------------------------- */ - -typedef struct virtio_pci_legacy { - u32 host_features; - u32 guest_features; - u32 queue_pfn; - u16 queue_num; - u16 queue_sel; - u16 queue_notify; - u8 status; - u8 isr; - u8 device[]; -} virtio_pci_legacy; - -/* --- virtio 1.0 (modern) structs ---------------------------------- */ - -/* Common configuration */ -#define VIRTIO_PCI_CAP_COMMON_CFG 1 -/* Notifications */ -#define VIRTIO_PCI_CAP_NOTIFY_CFG 2 -/* ISR access */ -#define VIRTIO_PCI_CAP_ISR_CFG 3 -/* Device specific configuration */ -#define VIRTIO_PCI_CAP_DEVICE_CFG 4 -/* PCI configuration access */ -#define VIRTIO_PCI_CAP_PCI_CFG 5 - -/* This is the PCI capability header: */ -struct virtio_pci_cap { - u8 cap_vndr; /* Generic PCI field: PCI_CAP_ID_VNDR */ - u8 cap_next; /* Generic PCI field: next ptr. */ - u8 cap_len; /* Generic PCI field: capability length */ - u8 cfg_type; /* Identifies the structure. */ - u8 bar; /* Where to find it. */ - u8 padding[3]; /* Pad to full dword. */ - u32 offset; /* Offset within bar. */ - u32 length; /* Length of the structure, in bytes. */ -}; - -struct virtio_pci_notify_cap { - struct virtio_pci_cap cap; - u32 notify_off_multiplier; /* Multiplier for queue_notify_off. */ -}; - -typedef struct virtio_pci_common_cfg { - /* About the whole device. */ - u32 device_feature_select; /* read-write */ - u32 device_feature; /* read-only */ - u32 guest_feature_select; /* read-write */ - u32 guest_feature; /* read-write */ - u16 msix_config; /* read-write */ - u16 num_queues; /* read-only */ - u8 device_status; /* read-write */ - u8 config_generation; /* read-only */ - - /* About a specific virtqueue. */ - u16 queue_select; /* read-write */ - u16 queue_size; /* read-write, power of 2. */ - u16 queue_msix_vector; /* read-write */ - u16 queue_enable; /* read-write */ - u16 queue_notify_off; /* read-only */ - u32 queue_desc_lo; /* read-write */ - u32 queue_desc_hi; /* read-write */ - u32 queue_avail_lo; /* read-write */ - u32 queue_avail_hi; /* read-write */ - u32 queue_used_lo; /* read-write */ - u32 queue_used_hi; /* read-write */ -} virtio_pci_common_cfg; - -typedef struct virtio_pci_isr { - u8 isr; -} virtio_pci_isr; - -/* --- driver structs ----------------------------------------------- */ - -struct vp_cap { - u32 addr; - u8 cap; - u8 bar; - u8 is_io; -}; - -struct vp_device { - struct vp_cap common, notify, isr, device, legacy; - u32 notify_off_multiplier; - u8 use_modern; -}; - -static inline u64 _vp_read(struct vp_cap *cap, u32 offset, u8 size) -{ - u32 addr = cap->addr + offset; - u64 var; - - if (cap->is_io) { - switch (size) { - case 8: - var = inl(addr); - var |= (u64)inl(addr+4) << 32; - break; - case 4: - var = inl(addr); - break; - case 2: - var = inw(addr); - break; - case 1: - var = inb(addr); - break; - default: - var = 0; - } - } else { - switch (size) { - case 8: - var = readl((void*)addr); - var |= (u64)readl((void*)(addr+4)) << 32; - break; - case 4: - var = readl((void*)addr); - break; - case 2: - var = readw((void*)addr); - break; - case 1: - var = readb((void*)addr); - break; - default: - var = 0; - } - } - dprintf(9, "vp read %x (%d) -> 0x%llx\n", addr, size, var); - return var; -} - -static inline void _vp_write(struct vp_cap *cap, u32 offset, u8 size, u64 var) -{ - u32 addr = cap->addr + offset; - - dprintf(9, "vp write %x (%d) <- 0x%llx\n", addr, size, var); - if (cap->is_io) { - switch (size) { - case 4: - outl(var, addr); - break; - case 2: - outw(var, addr); - break; - case 1: - outb(var, addr); - break; - } - } else { - switch (size) { - case 4: - writel((void*)addr, var); - break; - case 2: - writew((void*)addr, var); - break; - case 1: - writeb((void*)addr, var); - break; - } - } -} - -#define vp_read(_cap, _struct, _field) \ - _vp_read(_cap, offsetof(_struct, _field), \ - sizeof(((_struct *)0)->_field)) - -#define vp_write(_cap, _struct, _field, _var) \ - _vp_write(_cap, offsetof(_struct, _field), \ - sizeof(((_struct *)0)->_field), _var) - -u64 vp_get_features(struct vp_device *vp); -void vp_set_features(struct vp_device *vp, u64 features); - -static inline void vp_get_legacy(struct vp_device *vp, unsigned offset, - void *buf, unsigned len) -{ - u8 *ptr = buf; - unsigned i; - - for (i = 0; i < len; i++) - ptr[i] = vp_read(&vp->legacy, virtio_pci_legacy, device[i]); -} - -u8 vp_get_status(struct vp_device *vp); -void vp_set_status(struct vp_device *vp, u8 status); -u8 vp_get_isr(struct vp_device *vp); -void vp_reset(struct vp_device *vp); - -struct pci_device; -struct vring_virtqueue; -void vp_init_simple(struct vp_device *vp, struct pci_device *pci); -void vp_notify(struct vp_device *vp, struct vring_virtqueue *vq); -int vp_find_vq(struct vp_device *vp, int queue_index, - struct vring_virtqueue **p_vq); -#endif /* _VIRTIO_PCI_H_ */ |