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dm: virtio-input: add virtio-input data structures
This patch adds the data structures and macros used to implement virtio-input. Signed-off-by: Jian Jun Chen <jian.jun.chen@intel.com> Reviewed-by: Hao Li <hao.l.li@intel.com> Reviewed-by: Zhao Yakui <yakui.zhao@intel.com> Acked-by: Eddie Dong <eddie.dong@intel.com>
This commit is contained in:
Jian Jun Chen
lijinxia
parent
88b530fc2f
commit
68d0bc8a8b
1
Makefile
1
Makefile
@ -71,6 +71,7 @@ SRCS += hw/pci/xhci.c
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SRCS += hw/pci/core.c
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SRCS += hw/pci/virtio/virtio_console.c
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SRCS += hw/pci/virtio/virtio_block.c
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SRCS += hw/pci/virtio/virtio_input.c
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SRCS += hw/pci/ahci.c
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SRCS += hw/pci/hostbridge.c
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SRCS += hw/pci/passthrough.c
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228
hw/pci/virtio/virtio_input.c
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228
hw/pci/virtio/virtio_input.c
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@ -0,0 +1,228 @@
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/*
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* Copyright (C) 2018 Intel Corporation. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#include <sys/cdefs.h>
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#include <sys/param.h>
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#include <sys/types.h>
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#include <err.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <stddef.h>
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#include <stdbool.h>
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#include <string.h>
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#include <unistd.h>
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#include <assert.h>
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#include <pthread.h>
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#include "dm.h"
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#include "pci_core.h"
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#include "virtio.h"
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#include "mevent.h"
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#include <linux/input.h>
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static int virtio_input_debug;
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#define DPRINTF(params) do { if (virtio_input_debug) printf params; } while (0)
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#define WPRINTF(params) (printf params)
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/*
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* Queue definitions.
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*/
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#define VIRTIO_INPUT_EVENT_QUEUE 0
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#define VIRTIO_INPUT_STATUS_QUEUE 1
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#define VIRTIO_INPUT_MAXQ 2
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/*
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* Virtqueue size.
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*/
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#define VIRTIO_INPUT_RINGSZ 64
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/*
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* Default size of the buffer used to hold events between SYN
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*/
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#define VIRTIO_INPUT_PACKET_SIZE 10
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/*
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* Host capabilities
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*/
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#define VIRTIO_INPUT_S_HOSTCAPS (VIRTIO_F_VERSION_1)
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enum virtio_input_config_select {
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VIRTIO_INPUT_CFG_UNSET = 0x00,
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VIRTIO_INPUT_CFG_ID_NAME = 0x01,
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VIRTIO_INPUT_CFG_ID_SERIAL = 0x02,
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VIRTIO_INPUT_CFG_ID_DEVIDS = 0x03,
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VIRTIO_INPUT_CFG_PROP_BITS = 0x10,
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VIRTIO_INPUT_CFG_EV_BITS = 0x11,
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VIRTIO_INPUT_CFG_ABS_INFO = 0x12,
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};
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struct virtio_input_absinfo {
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uint32_t min;
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uint32_t max;
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uint32_t fuzz;
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uint32_t flat;
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uint32_t res;
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};
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struct virtio_input_devids {
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uint16_t bustype;
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uint16_t vendor;
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uint16_t product;
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uint16_t version;
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};
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struct virtio_input_event {
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uint16_t type;
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uint16_t code;
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uint32_t value;
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};
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/*
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* Device-specific configuration registers
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* To query a specific piece of configuration information FE driver sets
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* "select" and "subsel" accordingly, information size is returned in "size"
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* and information data is returned in union "u"
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*/
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struct virtio_input_config {
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uint8_t select;
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uint8_t subsel;
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uint8_t size;
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uint8_t reserved[5];
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union {
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char string[128];
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uint8_t bitmap[128];
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struct virtio_input_absinfo abs;
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struct virtio_input_devids ids;
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} u;
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};
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struct virtio_input_event_elem {
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struct virtio_input_event event;
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struct iovec iov;
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uint16_t idx;
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};
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/*
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* Per-device struct
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*/
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struct virtio_input {
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struct virtio_base base;
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struct virtio_vq_info queues[VIRTIO_INPUT_MAXQ];
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pthread_mutex_t mtx;
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struct mevent *mevp;
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uint64_t features;
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struct virtio_input_config cfg;
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char *evdev;
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char *serial;
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int fd;
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bool ready;
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struct virtio_input_event_elem *event_queue;
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uint32_t event_qsize;
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uint32_t event_qindex;
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};
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static void virtio_input_reset(void *);
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static void virtio_input_neg_features(void *, uint64_t);
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static void virtio_input_set_status(void *, uint64_t);
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static int virtio_input_cfgread(void *, int, int, uint32_t *);
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static int virtio_input_cfgwrite(void *, int, int, uint32_t);
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static struct virtio_ops virtio_input_ops = {
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"virtio_input", /* our name */
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VIRTIO_INPUT_MAXQ, /* we support VTCON_MAXQ virtqueues */
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sizeof(struct virtio_input_config), /* config reg size */
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virtio_input_reset, /* reset */
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NULL, /* device-wide qnotify */
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virtio_input_cfgread, /* read virtio config */
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virtio_input_cfgwrite, /* write virtio config */
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virtio_input_neg_features, /* apply negotiated features */
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virtio_input_set_status, /* called on guest set status */
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VIRTIO_INPUT_S_HOSTCAPS, /* our capabilities */
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};
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static void
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virtio_input_reset(void *vdev)
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{
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/* to be implemented */
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}
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static void
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virtio_input_neg_features(void *vdev, uint64_t negotiated_features)
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{
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/* to be implemented */
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}
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static void
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virtio_input_set_status(void *vdev, uint64_t status)
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{
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/* to be implemented */
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}
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static int
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virtio_input_cfgread(void *vdev, int offset, int size, uint32_t *retval)
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{
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/* to be implemented */
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return 0;
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}
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static int
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virtio_input_cfgwrite(void *vdev, int offset, int size, uint32_t val)
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{
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/* to be implemented */
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return 0;
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}
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static int
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virtio_input_init(struct vmctx *ctx, struct pci_vdev *dev, char *opts)
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{
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/* to be implemented */
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DPRINTF(("%s\n", __func__));
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(void)virtio_input_ops;
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return 0;
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}
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static void
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virtio_input_deinit(struct vmctx *ctx, struct pci_vdev *dev, char *opts)
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{
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/* to be implemented */
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}
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struct pci_vdev_ops pci_ops_virtio_input = {
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.class_name = "virtio-input",
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.vdev_init = virtio_input_init,
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.vdev_deinit = virtio_input_deinit,
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.vdev_barwrite = virtio_pci_write,
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.vdev_barread = virtio_pci_read
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};
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DEFINE_PCI_DEVTYPE(pci_ops_virtio_input);
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