From cfdc1bb06ee4cd3a7e4aa0ebf14b00c0ce3a5e94 Mon Sep 17 00:00:00 2001 From: Paolo Bonzini Date: Mon, 18 Apr 2011 17:11:14 +0200 Subject: 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 Cc: Christoph Hellwig --- hw/scsi.h | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) (limited to 'hw/scsi.h') diff --git a/hw/scsi.h b/hw/scsi.h index 7c09f32d4d..d4ecc9bec4 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) -- cgit 1.4.1