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virtio: add API to uninit a device.

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* free interrupts, free queues, return to init state.
* this will be used by virtio_net on interface uninit.

Change-Id: I7c1e6facc37cf6bfe19628576fdf2c0bac9e5c38
This commit is contained in:
Jérôme Duval
2018-04-26 06:25:41 +00:00
parent 6e82e42859
commit 61cd7e85d7
6 changed files with 112 additions and 20 deletions
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headers/private/virtio/virtio.h
+5
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@@ -85,6 +85,7 @@ typedef struct {
uint16 (*get_queue_ring_size)(void* cookie, uint16 queue);
status_t (*setup_queue)(void* cookie, uint16 queue, phys_addr_t phy);
status_t (*setup_interrupt)(void* cookie, uint16 queueCount);
status_t (*free_interrupt)(void* cookie);
void (*notify_queue)(void* cookie, uint16 queue);
} virtio_sim_interface;
@@ -104,9 +105,13 @@ typedef struct {
status_t (*alloc_queues)(virtio_device cookie, size_t count,
virtio_queue* queues);
void (*free_queues)(virtio_device cookie);
status_t (*setup_interrupt)(virtio_device cookie,
virtio_intr_func config_handler, void* driverCookie);
status_t (*free_interrupts)(virtio_device cookie);
status_t (*queue_setup_interrupt)(virtio_queue queue,
virtio_callback_func handler, void* cookie);