mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-28 22:13:08 +00:00
130 lines
3.4 KiB
C
130 lines
3.4 KiB
C
|
/* SPDX-License-Identifier: GPL-2.0+ */
|
||
|
/*
|
||
|
* Copyright (C) 2018, Tuomas Tynkkynen <tuomas.tynkkynen@iki.fi>
|
||
|
* Copyright (C) 2018, Bin Meng <bmeng.cn@gmail.com>
|
||
|
*
|
||
|
* From Linux kernel include/uapi/linux/virtio_mmio.h
|
||
|
*/
|
||
|
|
||
|
#ifndef _LINUX_VIRTIO_MMIO_H
|
||
|
#define _LINUX_VIRTIO_MMIO_H
|
||
|
|
||
|
/* Control registers */
|
||
|
|
||
|
/* Magic value ("virt" string) - Read Only */
|
||
|
#define VIRTIO_MMIO_MAGIC_VALUE 0x000
|
||
|
|
||
|
/* Virtio device version - Read Only */
|
||
|
#define VIRTIO_MMIO_VERSION 0x004
|
||
|
|
||
|
/* Virtio device ID - Read Only */
|
||
|
#define VIRTIO_MMIO_DEVICE_ID 0x008
|
||
|
|
||
|
/* Virtio vendor ID - Read Only */
|
||
|
#define VIRTIO_MMIO_VENDOR_ID 0x00c
|
||
|
|
||
|
/*
|
||
|
* Bitmask of the features supported by the device (host)
|
||
|
* (32 bits per set) - Read Only
|
||
|
*/
|
||
|
#define VIRTIO_MMIO_DEVICE_FEATURES 0x010
|
||
|
|
||
|
/* Device (host) features set selector - Write Only */
|
||
|
#define VIRTIO_MMIO_DEVICE_FEATURES_SEL 0x014
|
||
|
|
||
|
/*
|
||
|
* Bitmask of features activated by the driver (guest)
|
||
|
* (32 bits per set) - Write Only
|
||
|
*/
|
||
|
#define VIRTIO_MMIO_DRIVER_FEATURES 0x020
|
||
|
|
||
|
/* Activated features set selector - Write Only */
|
||
|
#define VIRTIO_MMIO_DRIVER_FEATURES_SEL 0x024
|
||
|
|
||
|
#ifndef VIRTIO_MMIO_NO_LEGACY /* LEGACY DEVICES ONLY! */
|
||
|
|
||
|
/* Guest's memory page size in bytes - Write Only */
|
||
|
#define VIRTIO_MMIO_GUEST_PAGE_SIZE 0x028
|
||
|
|
||
|
#endif
|
||
|
|
||
|
/* Queue selector - Write Only */
|
||
|
#define VIRTIO_MMIO_QUEUE_SEL 0x030
|
||
|
|
||
|
/* Maximum size of the currently selected queue - Read Only */
|
||
|
#define VIRTIO_MMIO_QUEUE_NUM_MAX 0x034
|
||
|
|
||
|
/* Queue size for the currently selected queue - Write Only */
|
||
|
#define VIRTIO_MMIO_QUEUE_NUM 0x038
|
||
|
|
||
|
#ifndef VIRTIO_MMIO_NO_LEGACY /* LEGACY DEVICES ONLY! */
|
||
|
|
||
|
/* Used Ring alignment for the currently selected queue - Write Only */
|
||
|
#define VIRTIO_MMIO_QUEUE_ALIGN 0x03c
|
||
|
|
||
|
/* Guest's PFN for the currently selected queue - Read Write */
|
||
|
#define VIRTIO_MMIO_QUEUE_PFN 0x040
|
||
|
|
||
|
#endif
|
||
|
|
||
|
/* Ready bit for the currently selected queue - Read Write */
|
||
|
#define VIRTIO_MMIO_QUEUE_READY 0x044
|
||
|
|
||
|
/* Queue notifier - Write Only */
|
||
|
#define VIRTIO_MMIO_QUEUE_NOTIFY 0x050
|
||
|
|
||
|
/* Interrupt status - Read Only */
|
||
|
#define VIRTIO_MMIO_INTERRUPT_STATUS 0x060
|
||
|
|
||
|
/* Interrupt acknowledge - Write Only */
|
||
|
#define VIRTIO_MMIO_INTERRUPT_ACK 0x064
|
||
|
|
||
|
/* Device status register - Read Write */
|
||
|
#define VIRTIO_MMIO_STATUS 0x070
|
||
|
|
||
|
/* Selected queue's Descriptor Table address, 64 bits in two halves */
|
||
|
#define VIRTIO_MMIO_QUEUE_DESC_LOW 0x080
|
||
|
#define VIRTIO_MMIO_QUEUE_DESC_HIGH 0x084
|
||
|
|
||
|
/* Selected queue's Available Ring address, 64 bits in two halves */
|
||
|
#define VIRTIO_MMIO_QUEUE_AVAIL_LOW 0x090
|
||
|
#define VIRTIO_MMIO_QUEUE_AVAIL_HIGH 0x094
|
||
|
|
||
|
/* Selected queue's Used Ring address, 64 bits in two halves */
|
||
|
#define VIRTIO_MMIO_QUEUE_USED_LOW 0x0a0
|
||
|
#define VIRTIO_MMIO_QUEUE_USED_HIGH 0x0a4
|
||
|
|
||
|
/* Configuration atomicity value */
|
||
|
#define VIRTIO_MMIO_CONFIG_GENERATION 0x0fc
|
||
|
|
||
|
/*
|
||
|
* The config space is defined by each driver as
|
||
|
* the per-driver configuration space - Read Write
|
||
|
*/
|
||
|
#define VIRTIO_MMIO_CONFIG 0x100
|
||
|
|
||
|
/* Interrupt flags (re: interrupt status & acknowledge registers) */
|
||
|
|
||
|
#define VIRTIO_MMIO_INT_VRING BIT(0)
|
||
|
#define VIRTIO_MMIO_INT_CONFIG BIT(1)
|
||
|
|
||
|
/*
|
||
|
* The alignment to use between consumer and producer parts of vring.
|
||
|
* Currently hardcoded to the page size.
|
||
|
*/
|
||
|
#define PAGE_SHIFT 12
|
||
|
#define VIRTIO_MMIO_VRING_ALIGN PAGE_SIZE
|
||
|
|
||
|
/**
|
||
|
* virtio mmio transport driver private data
|
||
|
*
|
||
|
* @base: mmio transport device register base
|
||
|
* @version: mmio transport device version
|
||
|
*/
|
||
|
struct virtio_mmio_priv {
|
||
|
void __iomem *base;
|
||
|
u32 version;
|
||
|
};
|
||
|
|
||
|
#endif /* _LINUX_VIRTIO_MMIO_H */
|