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hw/vmapple/virtio-blk: Add support for apple virtio-blk

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Apple has its own virtio-blk PCI device ID where it deviates from the
official virtio-pci spec slightly: It puts a new "apple type"
field at a static offset in config space and introduces a new barrier
command.

This patch first creates a mechanism for virtio-blk downstream classes to
handle unknown commands. It then creates such a downstream class and a new
vmapple-virtio-blk-pci class which support the additional apple type config
identifier as well as the barrier command.

The 'aux' or 'root' device type are selected using the 'variant' property.

Signed-off-by: Alexander Graf <graf@amazon.com>
Signed-off-by: Phil Dennis-Jordan <phil@philjordan.eu>
Reviewed-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Tested-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Message-ID: <20241223221645.29911-13-phil@philjordan.eu>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
This commit is contained in:
Alexander Graf 2023-06-14 22:56:22 +00:00 • committed by Philippe Mathieu-Daudé
parent 33b5446206
commit ee241d79bb
10 changed files with 264 additions and 4 deletions
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11
include/hw/virtio/virtio-blk.h
View file

@ -24,7 +24,7 @@
#include "qapi/qapi-types-virtio.h"
#define TYPE_VIRTIO_BLK "virtio-blk-device"
OBJECT_DECLARE_SIMPLE_TYPE(VirtIOBlock, VIRTIO_BLK)
OBJECT_DECLARE_TYPE(VirtIOBlock, VirtIOBlkClass, VIRTIO_BLK)
/* This is the last element of the write scatter-gather list */
struct virtio_blk_inhdr
@ -100,6 +100,15 @@ typedef struct MultiReqBuffer {
bool is_write;
} MultiReqBuffer;
typedef struct VirtIOBlkClass {
/*< private >*/
VirtioDeviceClass parent;
/*< public >*/
bool (*handle_unknown_request)(VirtIOBlockReq *req, MultiReqBuffer *mrb,
uint32_t type);
} VirtIOBlkClass;
void virtio_blk_handle_vq(VirtIOBlock *s, VirtQueue *vq);
void virtio_blk_req_complete(VirtIOBlockReq *req, unsigned char status);
#endif