1 /*-
2 * Copyright (c) 2011, Bryan Venteicher <bryanv@FreeBSD.org>
3 * All rights reserved.
4 *
5 * SPDX-License-Identifier: BSD-2-Clause
6 */
7
8 #include <openamp/virtio.h>
9
10 /*
11 * TODO :
12 * This structure may change depending on the types of devices we support.
13 */
14 static const struct virtio_ident {
15 unsigned short devid;
16 const char *name;
17 } virtio_ident_table[] = {
18 {
19 VIRTIO_ID_NETWORK, "Network"}, {
20 VIRTIO_ID_BLOCK, "Block"}, {
21 VIRTIO_ID_CONSOLE, "Console"}, {
22 VIRTIO_ID_ENTROPY, "Entropy"}, {
23 VIRTIO_ID_BALLOON, "Balloon"}, {
24 VIRTIO_ID_IOMEMORY, "IOMemory"}, {
25 VIRTIO_ID_SCSI, "SCSI"}, {
26 VIRTIO_ID_9P, "9P Transport"}, {
27 VIRTIO_ID_MAC80211_WLAN, "MAC80211 WLAN"}, {
28 VIRTIO_ID_RPROC_SERIAL, "Remoteproc Serial"}, {
29 VIRTIO_ID_GPU, "GPU"}, {
30 VIRTIO_ID_INPUT, "Input"}, {
31 VIRTIO_ID_VSOCK, "Vsock Transport"}, {
32 VIRTIO_ID_SOUND, "Sound"}, {
33 VIRTIO_ID_FS, "File System"}, {
34 VIRTIO_ID_MAC80211_HWSIM, "MAC80211 HWSIM"}, {
35 VIRTIO_ID_I2C_ADAPTER, "I2C Adapter"}, {
36 VIRTIO_ID_BT, "Bluetooth"}, {
37 VIRTIO_ID_GPIO, "GPIO" }, {
38 0, NULL}
39 };
40
virtio_dev_name(unsigned short devid)41 const char *virtio_dev_name(unsigned short devid)
42 {
43 const struct virtio_ident *ident;
44
45 for (ident = virtio_ident_table; ident->name; ident++) {
46 if (ident->devid == devid)
47 return ident->name;
48 }
49
50 return NULL;
51 }
52
virtio_describe(struct virtio_device * dev,const char * msg,uint32_t features,struct virtio_feature_desc * desc)53 __deprecated void virtio_describe(struct virtio_device *dev, const char *msg,
54 uint32_t features, struct virtio_feature_desc *desc)
55 {
56 (void)dev;
57 (void)msg;
58 (void)features;
59 (void)desc;
60 }
61
virtio_create_virtqueues(struct virtio_device * vdev,unsigned int flags,unsigned int nvqs,const char * names[],vq_callback callbacks[],void * callback_args[])62 int virtio_create_virtqueues(struct virtio_device *vdev, unsigned int flags,
63 unsigned int nvqs, const char *names[],
64 vq_callback callbacks[], void *callback_args[])
65 {
66 struct virtio_vring_info *vring_info;
67 struct vring_alloc_info *vring_alloc;
68 unsigned int num_vrings, i;
69 int ret;
70 (void)flags;
71
72 if (!vdev)
73 return -EINVAL;
74
75 if (vdev->func && vdev->func->create_virtqueues) {
76 return vdev->func->create_virtqueues(vdev, flags, nvqs,
77 names, callbacks, callback_args);
78 }
79
80 num_vrings = vdev->vrings_num;
81 if (nvqs > num_vrings)
82 return ERROR_VQUEUE_INVLD_PARAM;
83 /* Initialize virtqueue for each vring */
84 for (i = 0; i < nvqs; i++) {
85 vring_info = &vdev->vrings_info[i];
86
87 vring_alloc = &vring_info->info;
88 if (VIRTIO_ROLE_IS_DRIVER(vdev)) {
89 size_t offset;
90 struct metal_io_region *io = vring_info->io;
91
92 offset = metal_io_virt_to_offset(io,
93 vring_alloc->vaddr);
94 metal_io_block_set(io, offset, 0,
95 vring_size(vring_alloc->num_descs,
96 vring_alloc->align));
97 }
98 ret = virtqueue_create(vdev, i, names[i], vring_alloc,
99 callbacks[i], vdev->func->notify,
100 vring_info->vq);
101 if (ret)
102 return ret;
103 }
104 return 0;
105 }
106
107
