27d6bf40ed
Before commit622b520f, index=12 meant bus=1,unit=5. Since the commit, it means bus=0,unit=12. The drive is created, but not the guest device. That's because the controllers we use with if=scsi drives (lsi53c895a and esp) support only 7 units, and scsi_bus_legacy_handle_cmdline() ignores drives with unit numbers exceeding that limit. Changing the mapping of index to bus, unit is a regression. Breaking -drive invocations that used to work just makes it worse. Revert the part of commit622b520fthat causes this, and clean up some. Note that the fix only affects if=scsi. You can still put more than 7 units on a SCSI bus with -device & friends. Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
111 lines
3 KiB
C
111 lines
3 KiB
C
#ifndef QEMU_HW_SCSI_H
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#define QEMU_HW_SCSI_H
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#include "qdev.h"
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#include "block.h"
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#include "block_int.h"
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#define MAX_SCSI_DEVS 255
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#define SCSI_CMD_BUF_SIZE 16
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/* scsi-disk.c */
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enum scsi_reason {
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SCSI_REASON_DONE, /* Command complete. */
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SCSI_REASON_DATA /* Transfer complete, more data required. */
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};
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typedef struct SCSIBus SCSIBus;
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typedef struct SCSIDevice SCSIDevice;
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typedef struct SCSIDeviceInfo SCSIDeviceInfo;
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typedef void (*scsi_completionfn)(SCSIBus *bus, int reason, uint32_t tag,
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uint32_t arg);
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enum SCSIXferMode {
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SCSI_XFER_NONE, /* TEST_UNIT_READY, ... */
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SCSI_XFER_FROM_DEV, /* READ, INQUIRY, MODE_SENSE, ... */
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SCSI_XFER_TO_DEV, /* WRITE, MODE_SELECT, ... */
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};
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typedef struct SCSIRequest {
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SCSIBus *bus;
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SCSIDevice *dev;
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uint32_t tag;
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uint32_t lun;
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uint32_t status;
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struct {
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uint8_t buf[SCSI_CMD_BUF_SIZE];
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int len;
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size_t xfer;
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uint64_t lba;
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enum SCSIXferMode mode;
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} cmd;
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BlockDriverAIOCB *aiocb;
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bool enqueued;
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QTAILQ_ENTRY(SCSIRequest) next;
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} SCSIRequest;
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struct SCSIDevice
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{
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DeviceState qdev;
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uint32_t id;
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BlockConf conf;
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SCSIDeviceInfo *info;
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QTAILQ_HEAD(, SCSIRequest) requests;
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int blocksize;
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int type;
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};
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/* cdrom.c */
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int cdrom_read_toc(int nb_sectors, uint8_t *buf, int msf, int start_track);
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int cdrom_read_toc_raw(int nb_sectors, uint8_t *buf, int msf, int session_num);
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/* scsi-bus.c */
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typedef int (*scsi_qdev_initfn)(SCSIDevice *dev);
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struct SCSIDeviceInfo {
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DeviceInfo qdev;
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scsi_qdev_initfn init;
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void (*destroy)(SCSIDevice *s);
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int32_t (*send_command)(SCSIDevice *s, uint32_t tag, uint8_t *buf,
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int lun);
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void (*read_data)(SCSIDevice *s, uint32_t tag);
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int (*write_data)(SCSIDevice *s, uint32_t tag);
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void (*cancel_io)(SCSIDevice *s, uint32_t tag);
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uint8_t *(*get_buf)(SCSIDevice *s, uint32_t tag);
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};
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typedef void (*SCSIAttachFn)(DeviceState *host, BlockDriverState *bdrv,
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int unit);
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struct SCSIBus {
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BusState qbus;
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int busnr;
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int tcq, ndev;
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scsi_completionfn complete;
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SCSIDevice *devs[MAX_SCSI_DEVS];
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};
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void scsi_bus_new(SCSIBus *bus, DeviceState *host, int tcq, int ndev,
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scsi_completionfn complete);
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void scsi_qdev_register(SCSIDeviceInfo *info);
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static inline SCSIBus *scsi_bus_from_device(SCSIDevice *d)
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{
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return DO_UPCAST(SCSIBus, qbus, d->qdev.parent_bus);
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}
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SCSIDevice *scsi_bus_legacy_add_drive(SCSIBus *bus, BlockDriverState *bdrv,
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int unit, bool removable);
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int scsi_bus_legacy_handle_cmdline(SCSIBus *bus);
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SCSIRequest *scsi_req_alloc(size_t size, SCSIDevice *d, uint32_t tag, uint32_t lun);
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SCSIRequest *scsi_req_find(SCSIDevice *d, uint32_t tag);
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void scsi_req_free(SCSIRequest *req);
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int scsi_req_parse(SCSIRequest *req, uint8_t *buf);
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void scsi_req_print(SCSIRequest *req);
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void scsi_req_complete(SCSIRequest *req);
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#endif
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