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Edit File : virtio_mmio.h \| Size : 4.85 KB
/* * Virtio platform device driver * * Copyright 2011, ARM Ltd. * * Based on Virtio PCI driver by Anthony Liguori, copyright IBM Corp. 2007 * * This header is BSD licensed so anyone can use the definitions to implement * compatible drivers/servers. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of IBM nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL IBM OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. / #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 / Shared memory region id / #define VIRTIO_MMIO_SHM_SEL 0x0ac / Shared memory region length, 64 bits in two halves / #define VIRTIO_MMIO_SHM_LEN_LOW 0x0b0 #define VIRTIO_MMIO_SHM_LEN_HIGH 0x0b4 / Shared memory region base address, 64 bits in two halves / #define VIRTIO_MMIO_SHM_BASE_LOW 0x0b8 #define VIRTIO_MMIO_SHM_BASE_HIGH 0x0bc / 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 (1 << 0) #define VIRTIO_MMIO_INT_CONFIG (1 << 1) #endif Back

Edit File : virtio_mmio.h | Size : 4.85 KB

/*
 * Virtio platform device driver
 *
 * Copyright 2011, ARM Ltd.
 *
 * Based on Virtio PCI driver by Anthony Liguori, copyright IBM Corp. 2007
 *
 * This header is BSD licensed so anyone can use the definitions to implement
 * compatible drivers/servers.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of IBM nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL IBM OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#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

/* Shared memory region id */
#define VIRTIO_MMIO_SHM_SEL             0x0ac

/* Shared memory region length, 64 bits in two halves */
#define VIRTIO_MMIO_SHM_LEN_LOW         0x0b0
#define VIRTIO_MMIO_SHM_LEN_HIGH        0x0b4

/* Shared memory region base address, 64 bits in two halves */
#define VIRTIO_MMIO_SHM_BASE_LOW        0x0b8
#define VIRTIO_MMIO_SHM_BASE_HIGH       0x0bc

/* 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		(1 << 0)
#define VIRTIO_MMIO_INT_CONFIG		(1 << 1)

#endif

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