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authorPaolo Bonzini <pbonzini@redhat.com>2011-04-18 17:11:14 +0200
committerPaolo Bonzini <pbonzini@redhat.com>2011-05-26 12:14:14 +0200
commitcfdc1bb06ee4cd3a7e4aa0ebf14b00c0ce3a5e94 (patch)
tree3f7da29f2bb352933928902c461c33bde5026d85 /hw/scsi.h
parentab9adc88c80186cfef29bda076363e20aa675241 (diff)
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scsi: introduce SCSIBusOps
There are more operations than a SCSI bus can handle, besides completing commands. One example, which this series will introduce, is cleaning up after a request is cancelled. More long term, a "SCSI bus" can represent the LUNs attached to a target; in this case, while all commands will ultimately reach a logical unit, it is the target who is in charge of answering REPORT LUNs. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Cc: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'hw/scsi.h')
-rw-r--r--hw/scsi.h13
1 files changed, 7 insertions, 6 deletions
diff --git a/hw/scsi.h b/hw/scsi.h
index 7c09f32..d4ecc9b 100644
--- a/hw/scsi.h
+++ b/hw/scsi.h
@@ -16,10 +16,9 @@ enum scsi_reason {
};
typedef struct SCSIBus SCSIBus;
+typedef struct SCSIBusOps SCSIBusOps;
typedef struct SCSIDevice SCSIDevice;
typedef struct SCSIDeviceInfo SCSIDeviceInfo;
-typedef void (*scsi_completionfn)(SCSIBus *bus, int reason, uint32_t tag,
- uint32_t arg);
enum SCSIXferMode {
SCSI_XFER_NONE, /* TEST_UNIT_READY, ... */
@@ -74,20 +73,22 @@ struct SCSIDeviceInfo {
uint8_t *(*get_buf)(SCSIDevice *s, uint32_t tag);
};
-typedef void (*SCSIAttachFn)(DeviceState *host, BlockDriverState *bdrv,
- int unit);
+struct SCSIBusOps {
+ void (*complete)(SCSIBus *bus, int reason, uint32_t tag, uint32_t arg);
+};
+
struct SCSIBus {
BusState qbus;
int busnr;
int tcq, ndev;
- scsi_completionfn complete;
+ const SCSIBusOps *ops;
SCSIDevice *devs[MAX_SCSI_DEVS];
};
void scsi_bus_new(SCSIBus *bus, DeviceState *host, int tcq, int ndev,
- scsi_completionfn complete);
+ const SCSIBusOps *ops);
void scsi_qdev_register(SCSIDeviceInfo *info);
static inline SCSIBus *scsi_bus_from_device(SCSIDevice *d)