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scsi: Increase the number of possible devices 

The SCSI parallel interface has a limit of 8 devices, but
not the SCSI stack in general. So we should be removing the
hard-coded limit and use MAX_SCSI_DEVS instead.
And we only need to scan those devices which are allocated
by the bus.

Signed-off-by: Hannes Reinecke <hare@suse.de>
Acked-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Hannes Reinecke 2010-11-24 12:15:56 +01:00 committed by Kevin Wolf
parent 80465c5016
commit 622b520fb4
3 changed files with 4 additions and 3 deletions
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2
blockdev.h
View File

@ -32,7 +32,7 @@ struct DriveInfo {
};
#define MAX_IDE_DEVS 2
#define MAX_SCSI_DEVS 7
#define MAX_SCSI_DEVS 255
DriveInfo *drive_get(BlockInterfaceType type, int bus, int unit);
int drive_get_max_bus(BlockInterfaceType type);

2
hw/scsi-bus.c
View File

@ -108,7 +108,7 @@ int scsi_bus_legacy_handle_cmdline(SCSIBus *bus)
int res = 0, unit;
loc_push_none(&loc);
for (unit = 0; unit < MAX_SCSI_DEVS; unit++) {
for (unit = 0; unit < bus->ndev; unit++) {
dinfo = drive_get(IF_SCSI, bus->busnr, unit);
if (dinfo == NULL) {
continue;

3
hw/scsi.h
View File

@ -3,6 +3,7 @@
#include "qdev.h"
#include "block.h"
#include "blockdev.h"
#include "block_int.h"
#define SCSI_CMD_BUF_SIZE 16
@ -86,7 +87,7 @@ struct SCSIBus {
int tcq, ndev;
scsi_completionfn complete;
SCSIDevice *devs[8];
SCSIDevice *devs[MAX_SCSI_DEVS];
};
void scsi_bus_new(SCSIBus *bus, DeviceState *host, int tcq, int ndev,