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| author | Rusty Russell <rusty@rustcorp.com.au> | 2007-10-22 03:03:36 +0200 |
|---|---|---|
| committer | Rusty Russell <rusty@rustcorp.com.au> | 2007-10-23 07:49:54 +0200 |
| commit | ec3d41c4db4c21164332826ea8d812f94f2f6886 (patch) | |
| tree | 9b947e900745cfcc4df7409c6ba5583428964215 /drivers/virtio/config.c | |
| parent | Boot with virtual == physical to get closer to native Linux. (diff) | |
| download | linux-ec3d41c4db4c21164332826ea8d812f94f2f6886.tar.xz linux-ec3d41c4db4c21164332826ea8d812f94f2f6886.zip | |
Virtio interface
This attempts to implement a "virtual I/O" layer which should allow
common drivers to be efficiently used across most virtual I/O
mechanisms. It will no-doubt need further enhancement.
The virtio drivers add buffers to virtio queues; as the buffers are consumed
the driver "interrupt" callbacks are invoked.
There is also a generic implementation of config space which drivers can query
to get setup information from the host.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: Dor Laor <dor.laor@qumranet.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'drivers/virtio/config.c')
| -rw-r--r-- | drivers/virtio/config.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/virtio/config.c b/drivers/virtio/config.c new file mode 100644 index 000000000000..983d482fba40 --- /dev/null +++ b/drivers/virtio/config.c @@ -0,0 +1,13 @@ +/* Configuration space parsing helpers for virtio. + * + * The configuration is [type][len][... len bytes ...] fields. + * + * Copyright 2007 Rusty Russell, IBM Corporation. + * GPL v2 or later. + */ +#include <linux/err.h> +#include <linux/virtio.h> +#include <linux/virtio_config.h> +#include <linux/bug.h> +#include <asm/system.h> + |