On Tue, Oct 05, 2021 at 12:45:46PM -0400, Jonah Palmer wrote:This patch drops the name parameter for the virtio_init function. The pair between the numeric device ID and the string device ID (name) of a virtio device already exists, but not in a way that let's us map between them.s/let's/lets/This patch will let us do this and removes the need for the name parameter in virtio_init(). Signed-off-by: Jonah Palmer <jonah.palmer@oracle.com> ---+++ b/hw/virtio/virtio.c @@ -133,6 +133,43 @@ struct VirtQueue QLIST_ENTRY(VirtQueue) node; }; +const char *virtio_device_names[] = { + [VIRTIO_ID_NET] = "virtio-net", + [VIRTIO_ID_BLOCK] = "virtio-blk", + [VIRTIO_ID_CONSOLE] = "virtio-serial", + [VIRTIO_ID_RNG] = "virtio-rng", + [VIRTIO_ID_BALLOON] = "virtio-balloon", + [VIRTIO_ID_IOMEM] = "virtio-iomem", + [VIRTIO_ID_RPMSG] = "virtio-rpmsg", + [VIRTIO_ID_SCSI] = "virtio-scsi", + [VIRTIO_ID_9P] = "virtio-9p", + [VIRTIO_ID_MAC80211_WLAN] = "virtio-mac-wlan", + [VIRTIO_ID_RPROC_SERIAL] = "virtio-rproc-serial", + [VIRTIO_ID_CAIF] = "virtio-caif", + [VIRTIO_ID_MEMORY_BALLOON] = "virtio-mem-balloon", + [VIRTIO_ID_GPU] = "virtio-gpu", + [VIRTIO_ID_CLOCK] = "virtio-clk", + [VIRTIO_ID_INPUT] = "virtio-input", + [VIRTIO_ID_VSOCK] = "vhost-vsock", + [VIRTIO_ID_CRYPTO] = "virtio-crypto", + [VIRTIO_ID_SIGNAL_DIST] = "virtio-signal", + [VIRTIO_ID_PSTORE] = "virtio-pstore", + [VIRTIO_ID_IOMMU] = "virtio-iommu", + [VIRTIO_ID_MEM] = "virtio-mem", + [VIRTIO_ID_SOUND] = "virtio-sound", + [VIRTIO_ID_FS] = "vhost-user-fs", + [VIRTIO_ID_PMEM] = "virtio-pmem", + [VIRTIO_ID_MAC80211_HWSIM] = "virtio-mac-hwsim", + [VIRTIO_ID_I2C_ADAPTER] = "vhost-user-i2c", + [VIRTIO_ID_BT] = "virtio-bluetooth" +};Are these IDs consecutive, or can the array have gaps?+ +static const char *virtio_id_to_name(uint16_t device_id) +{ + assert(device_id < G_N_ELEMENTS(virtio_device_names)); + return virtio_device_names[device_id];If the latter, you may also want to assert that you aren't returning NULL.
Gotcha, will do! Jonah
+++ b/include/standard-headers/linux/virtio_ids.h @@ -55,6 +55,7 @@ #define VIRTIO_ID_FS 26 /* virtio filesystem */ #define VIRTIO_ID_PMEM 27 /* virtio pmem */ #define VIRTIO_ID_MAC80211_HWSIM 29 /* virtio mac80211-hwsim */ +#define VIRTIO_ID_I2C_ADAPTER 34 /* virtio I2C adapater */ #define VIRTIO_ID_BT 40 /* virtio bluetooth */And it looks like the array has gaps.