diff options
Diffstat (limited to 'virtio_input.c')
| -rw-r--r-- | virtio_input.c | 331 |
1 files changed, 0 insertions, 331 deletions
diff --git a/virtio_input.c b/virtio_input.c deleted file mode 100644 index 668abe6..0000000 --- a/virtio_input.c +++ /dev/null @@ -1,331 +0,0 @@ -/* - * Based on virtio-input.h of QEMU project - * - * Copyright (c) 2022-2023 Virtual Open Systems SAS. - * - * This work is licensed under the terms of the GNU GPL, version 2 or - * (at your option) any later version. See the COPYING file in the - * top-level directory. - */ - -#include <unistd.h> -#include <stdlib.h> -#include <stdio.h> -#include <stdint.h> -#include <string.h> -#include <stdbool.h> -#include <sys/param.h> - -/* Project header files */ -#include "vhost_user_input.h" - -#ifdef DEBUG -#define DBG(...) printf("virtio-input: " __VA_ARGS__) -#else -#define DBG(...) -#endif /* DEBUG */ - -#define VIRTIO_INPUT_VM_VERSION 1 - -/* ----------------------------------------------------------------- */ - -/* - * Example struct for keyboard - */ -static struct virtio_input_config virtio_keyboard_config[] = { - { - .select = VIRTIO_INPUT_CFG_ID_NAME, - .size = sizeof(VIRTIO_ID_NAME_KEYBOARD), - .u.string = VIRTIO_ID_NAME_KEYBOARD, - },{ - .select = VIRTIO_INPUT_CFG_ID_DEVIDS, - .size = sizeof(struct virtio_input_devids), - .u.ids = { - .bustype = (BUS_VIRTUAL), - .vendor = (0x0627), /* same we use for usb hid devices */ - .product = (0x0001), - .version = (0x0001), - }, - },{ - .select = VIRTIO_INPUT_CFG_EV_BITS, - .subsel = EV_KEY, - .size = 1, - .u.bitmap = { - KEY_G, - }, - }, - {}, /* End of list */ -}; - - -void virtio_input_send(VirtIOInput *vinput, virtio_input_event *event) -{ - DBG("virtio_input_send() not yet implemeted\n"); - (void)vinput; - (void)event; -} - -static void virtio_input_handle_evt(VirtIODevice *vdev, VirtQueue *vq) -{ - DBG("virtio_input_handle_evt(...) not yet implemeted\n"); - (void)vdev; - (void)vq; -} - -static void virtio_input_handle_sts(VirtIODevice *vdev, VirtQueue *vq) -{ - VirtIOInputClass *vic = vdev->vinput->input_class; - VirtIOInput *vinput = vdev->vinput; - virtio_input_event event; - VirtQueueElement *elem; - int len; - - DBG("virtio_input_handle_sts(...)\n"); - (void)vq; - - for (;;) { - elem = virtqueue_pop(vinput->sts, sizeof(VirtQueueElement)); - if (!elem) { - break; - } - - memset(&event, 0, sizeof(event)); - /* FIXME: add iov_to_buf func */ - len = 1; - /* - * TODO: Will be added in a next release - * len = iov_to_buf(elem->out_sg, elem->out_num, - * 0, &event, sizeof(event)); - */ - if (vic->handle_status) { - vic->handle_status(vinput, &event); - } - virtqueue_push(vinput->sts, elem, len); - munmap(elem, sizeof(VirtQueueElement)); - } - virtio_notify(vdev, vinput->sts); -} - -virtio_input_config *virtio_input_find_config(VirtIOInput *vinput, - uint8_t select, - uint8_t subsel) -{ - DBG("virtio_input_find_config(...)\n"); - VirtIOInputConfig *cfg; - - QTAILQ_FOREACH(cfg, &vinput->cfg_list, node) { - if (select == cfg->config.select && - subsel == cfg->config.subsel) { - return &cfg->config; - } - } - return NULL; -} - -void virtio_input_add_config(VirtIOInput *vinput, - virtio_input_config *config) -{ - DBG("virtio_input_add_config(...)\n"); - VirtIOInputConfig *cfg; - - if (virtio_input_find_config(vinput, config->select, config->subsel)) { - /* should not happen */ - DBG("Error duplicate config: %d/%d\n", config->select, config->subsel); - exit(1); - } - - cfg = (VirtIOInputConfig *)malloc(sizeof(VirtIOInputConfig)); - cfg->config = *config; - - QTAILQ_INSERT_TAIL(&vinput->cfg_list, cfg, node); -} - -void virtio_input_init_config(VirtIOInput *vinput, - virtio_input_config *config) -{ - DBG("virtio_input_init_config(...)\n"); - int i = 0; - - QTAILQ_INIT(&vinput->cfg_list); - while (config[i].select) { - virtio_input_add_config(vinput, config + i); - i++; - } -} - -void virtio_input_idstr_config(VirtIOInput *vinput, - uint8_t select, const char *string) -{ - DBG("virtio_input_idstr_config(...)\n"); - virtio_input_config id; - - if (!string) { - return; - } - memset(&id, 0, sizeof(id)); - id.select = select; - id.size = snprintf(id.u.string, sizeof(id.u.string), "%s", string); - virtio_input_add_config(vinput, &id); -} - -static void virtio_input_get_config(VirtIODevice *vdev, uint8_t *config_data) -{ - DBG("virtio_input_get_config(...)\n"); - VirtIOInput *vinput = vdev->vinput; - virtio_input_config *config; - - config = virtio_input_find_config(vinput, vinput->cfg_select, - vinput->cfg_subsel); - if (config) { - memcpy(config_data, config, vinput->cfg_size); - } else { - memset(config_data, 0, vinput->cfg_size); - } -} - -static void virtio_input_set_config(VirtIODevice *vdev, - const uint8_t *config_data) -{ - VirtIOInput *vinput = vdev->vinput; - virtio_input_config *config = (virtio_input_config *)config_data; - - DBG("virtio_input_set_config(...)\n"); - - vinput->cfg_select = config->select; - vinput->cfg_subsel = config->subsel; - virtio_notify_config(vdev); -} - -static uint64_t virtio_input_get_features(VirtIODevice *vdev, uint64_t f) -{ - DBG("virtio_input_get_features(...)\n"); - (void)vdev; - (void)f; - - return f; -} - -static void virtio_input_set_status(VirtIODevice *vdev, uint8_t val) -{ - VirtIOInputClass *vic = vdev->vinput->input_class; - VirtIOInput *vinput = vdev->vinput; - bool should_start = virtio_device_started(vdev, val); - - DBG("virtio_input_set_status(...): %u\n", val); - - if (should_start) { - if (!vinput->active) { - vinput->active = true; - if (vic->change_active) { - vic->change_active(vinput); - } - } - } -} - -static void virtio_input_reset(VirtIODevice *vdev) -{ - VirtIOInputClass *vic = vdev->vinput->input_class; - VirtIOInput *vinput = vdev->vinput; - - DBG("virtio_input_reset(...)\n"); - - if (vinput->active) { - vinput->active = false; - if (vic->change_active) { - vic->change_active(vinput); - } - } -} - -/* - * Functions which might be used in the future: - * - * static int virtio_input_post_load(void *opaque, int version_id) - * { - * VirtIOInput *vinput = global_vdev->vinput; - * VirtIOInputClass *vic = global_vdev->vinput->input_class; - * VirtIODevice *vdev = global_vdev; - * - * DBG("virtio_input_post_load(...)\n"); - * (void)opaque; - * (void)version_id; - * - * vinput->active = vdev->status & VIRTIO_CONFIG_S_DRIVER_OK; - * if (vic->change_active) { - * vic->change_active(vinput); - * } - * return 0; - * } - * - * static void virtio_input_finalize(VirtIODevice *vdev) - * { - * DBG("virtio_input_finalize not yet implemented"); - * (void)vdev; - * } - * - * static void virtio_input_device_unrealize(VirtIODevice *vdev) - * { - * DBG("virtio_input_device_unrealize not yet implemented"); - * (void)vdev; - * } - */ - -void virtio_input_device_realize(int queue_num, int queue_size) -{ - VirtIODevice *vdev = global_vdev; - struct VirtIOInputClass *vic = vdev->vinput->input_class; - VirtIOInput *vinput = vdev->vinput; - VirtIOInputConfig *cfg; - - DBG("virtio_input_device_realize(...)\n"); - (void)queue_num; - (void)queue_size; - - /* This needs to be added */ - proxy = (VirtIOMMIOProxy *)malloc(sizeof(VirtIOMMIOProxy)); - *proxy = (VirtIOMMIOProxy) { - .legacy = 1, - }; - - if (vic->realize) { - vic->realize(vdev); - } - - virtio_input_idstr_config(vinput, VIRTIO_INPUT_CFG_ID_SERIAL, - vinput->serial); - - QTAILQ_FOREACH(cfg, &vinput->cfg_list, node) { - if (vinput->cfg_size < cfg->config.size) { - vinput->cfg_size = cfg->config.size; - } - } - vinput->cfg_size += 8; - - virtio_input_init_config(vinput, virtio_keyboard_config); - - virtio_dev_init(vdev, "virtio-input", 18, vinput->cfg_size); - vinput->evt = virtio_add_queue(vdev, 64, virtio_input_handle_evt); - vinput->sts = virtio_add_queue(vdev, 64, virtio_input_handle_sts); - - /* FIXME: do we need that? */ - memcpy(global_vdev->vq, vinput->evt, sizeof(VirtQueue)); - memcpy(&global_vdev->vq[1], vinput->sts, sizeof(VirtQueue)); - - DBG("global_vdev->guest_features: 0x%lx\n", global_vdev->guest_features); -} - -void virtio_input_class_init(VirtIODevice *vdev) -{ - vdev->vdev_class = (VirtioDeviceClass *)malloc(sizeof(VirtioDeviceClass)); - vdev->vdev_class->parent = vdev; - - DBG("virtio_input_class_init(...)\n"); - - vdev->vdev_class->realize = virtio_input_device_realize; - vdev->vdev_class->get_config = virtio_input_get_config; - vdev->vdev_class->set_config = virtio_input_set_config; - vdev->vdev_class->get_features = virtio_input_get_features; - vdev->vdev_class->set_status = virtio_input_set_status; - vdev->vdev_class->reset = virtio_input_reset; -} |