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hw: Convert from BlockDriverState to BlockBackend, mostly

Browse source 
Device models should access their block backends only through the
block-backend.h API.  Convert them, and drop direct includes of
inappropriate headers.

Just four uses of BlockDriverState are left:

* The Xen paravirtual block device backend (xen_disk.c) opens images
  itself when set up via xenbus, bypassing blockdev.c.  I figure it
  should go through qmp_blockdev_add() instead.

* Device model "usb-storage" prompts for keys.  No other device model
  does, and this one probably shouldn't do it, either.

* ide_issue_trim_cb() uses bdrv_aio_discard() instead of
  blk_aio_discard() because it fishes its backend out of a BlockAIOCB,
  which has only the BlockDriverState.

* PC87312State has an unused BlockDriverState[] member.

The next two commits take care of the latter two.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Markus Armbruster 2014-10-07 13:59:18 +02:00 • committed by Kevin Wolf
parent 2a30307f70
commit 4be746345f
110 changed files with 1127 additions and 798 deletions
Download patch file Download diff file Expand all files Collapse all files

4
include/hw/arm/omap.h
View file

@ -755,10 +755,10 @@ void omap_rfbi_attach(struct omap_dss_s *s, int cs, struct rfbi_chip_s *chip);
struct omap_mmc_s;
struct omap_mmc_s *omap_mmc_init(hwaddr base,
MemoryRegion *sysmem,
BlockDriverState *bd,
BlockBackend *blk,
qemu_irq irq, qemu_irq dma[], omap_clk clk);
struct omap_mmc_s *omap2_mmc_init(struct omap_target_agent_s *ta,
BlockDriverState *bd, qemu_irq irq, qemu_irq dma[],
BlockBackend *blk, qemu_irq irq, qemu_irq dma[],
omap_clk fclk, omap_clk iclk);
void omap_mmc_reset(struct omap_mmc_s *s);
void omap_mmc_handlers(struct omap_mmc_s *s, qemu_irq ro, qemu_irq cover);

2
include/hw/arm/pxa.h
View file

@ -87,7 +87,7 @@ void pxa2xx_lcdc_oritentation(void *opaque, int angle);
typedef struct PXA2xxMMCIState PXA2xxMMCIState;
PXA2xxMMCIState *pxa2xx_mmci_init(MemoryRegion *sysmem,
hwaddr base,
BlockDriverState *bd, qemu_irq irq,
BlockBackend *blk, qemu_irq irq,
qemu_irq rx_dma, qemu_irq tx_dma);
void pxa2xx_mmci_handlers(PXA2xxMMCIState *s, qemu_irq readonly,
qemu_irq coverswitch);

6
include/hw/block/block.h
View file

@ -17,7 +17,7 @@
/* Configuration */
typedef struct BlockConf {
BlockDriverState *bs;
BlockBackend *blk;
uint16_t physical_block_size;
uint16_t logical_block_size;
uint16_t min_io_size;
@ -42,7 +42,7 @@ static inline unsigned int get_physical_block_exp(BlockConf *conf)
}
#define DEFINE_BLOCK_PROPERTIES(_state, _conf) \
DEFINE_PROP_DRIVE("drive", _state, _conf.bs), \
DEFINE_PROP_DRIVE("drive", _state, _conf.blk), \
DEFINE_PROP_BLOCKSIZE("logical_block_size", _state, \
_conf.logical_block_size, 512), \
DEFINE_PROP_BLOCKSIZE("physical_block_size", _state, \
@ -66,7 +66,7 @@ void blkconf_geometry(BlockConf *conf, int *trans,
/* Hard disk geometry */
void hd_geometry_guess(BlockDriverState *bs,
void hd_geometry_guess(BlockBackend *blk,
uint32_t *pcyls, uint32_t *pheads, uint32_t *psecs,
int *ptrans);
int hd_bios_chs_auto_trans(uint32_t cyls, uint32_t heads, uint32_t secs);

6
include/hw/block/flash.h
View file

@ -11,7 +11,7 @@ typedef struct pflash_t pflash_t;
pflash_t *pflash_cfi01_register(hwaddr base,
DeviceState *qdev, const char *name,
hwaddr size,
BlockDriverState *bs,
BlockBackend *blk,
uint32_t sector_len, int nb_blocs, int width,
uint16_t id0, uint16_t id1,
uint16_t id2, uint16_t id3, int be);
@ -20,7 +20,7 @@ pflash_t *pflash_cfi01_register(hwaddr base,
pflash_t *pflash_cfi02_register(hwaddr base,
DeviceState *qdev, const char *name,
hwaddr size,
BlockDriverState *bs, uint32_t sector_len,
BlockBackend *blk, uint32_t sector_len,
int nb_blocs, int nb_mappings, int width,
uint16_t id0, uint16_t id1,
uint16_t id2, uint16_t id3,
@ -30,7 +30,7 @@ pflash_t *pflash_cfi02_register(hwaddr base,
MemoryRegion *pflash_cfi01_get_memory(pflash_t *fl);
/* nand.c */
DeviceState *nand_init(BlockDriverState *bdrv, int manf_id, int chip_id);
DeviceState *nand_init(BlockBackend *blk, int manf_id, int chip_id);
void nand_setpins(DeviceState *dev, uint8_t cle, uint8_t ale,
uint8_t ce, uint8_t wp, uint8_t gnd);
void nand_getpins(DeviceState *dev, int *rb);

8
include/hw/qdev-properties.h
View file

@ -141,7 +141,7 @@ extern PropertyInfo qdev_prop_arraylen;
#define DEFINE_PROP_VLAN(_n, _s, _f) \
DEFINE_PROP(_n, _s, _f, qdev_prop_vlan, NICPeers)
#define DEFINE_PROP_DRIVE(_n, _s, _f) \
DEFINE_PROP(_n, _s, _f, qdev_prop_drive, BlockDriverState *)
DEFINE_PROP(_n, _s, _f, qdev_prop_drive, BlockBackend *)
#define DEFINE_PROP_MACADDR(_n, _s, _f) \
DEFINE_PROP(_n, _s, _f, qdev_prop_macaddr, MACAddr)
#define DEFINE_PROP_LOSTTICKPOLICY(_n, _s, _f, _d) \
@ -168,8 +168,10 @@ void qdev_prop_set_uint64(DeviceState *dev, const char *name, uint64_t value);
void qdev_prop_set_string(DeviceState *dev, const char *name, const char *value);
void qdev_prop_set_chr(DeviceState *dev, const char *name, CharDriverState *value);
void qdev_prop_set_netdev(DeviceState *dev, const char *name, NetClientState *value);
int qdev_prop_set_drive(DeviceState *dev, const char *name, BlockDriverState *value) QEMU_WARN_UNUSED_RESULT;
void qdev_prop_set_drive_nofail(DeviceState *dev, const char *name, BlockDriverState *value);
int qdev_prop_set_drive(DeviceState *dev, const char *name,
BlockBackend *value) QEMU_WARN_UNUSED_RESULT;
void qdev_prop_set_drive_nofail(DeviceState *dev, const char *name,
BlockBackend *value);
void qdev_prop_set_macaddr(DeviceState *dev, const char *name, uint8_t *value);
void qdev_prop_set_enum(DeviceState *dev, const char *name, int value);
/* FIXME: Remove opaque pointer properties. */

4
include/hw/scsi/scsi.h
View file

@ -2,7 +2,7 @@
#define QEMU_HW_SCSI_H
#include "hw/qdev.h"
#include "block/block.h"
#include "qemu/typedefs.h"
#include "hw/block/block.h"
#include "sysemu/sysemu.h"
#include "qemu/notify.h"
@ -173,7 +173,7 @@ static inline SCSIBus *scsi_bus_from_device(SCSIDevice *d)
return DO_UPCAST(SCSIBus, qbus, d->qdev.parent_bus);
}
SCSIDevice *scsi_bus_legacy_add_drive(SCSIBus *bus, BlockDriverState *bdrv,
SCSIDevice *scsi_bus_legacy_add_drive(SCSIBus *bus, BlockBackend *blk,
int unit, bool removable, int bootindex,
const char *serial, Error **errp);
void scsi_bus_legacy_handle_cmdline(SCSIBus *bus, Error **errp);

2
include/hw/sd.h
View file

@ -68,7 +68,7 @@ typedef struct {
typedef struct SDState SDState;
SDState *sd_init(BlockDriverState *bs, bool is_spi);
SDState *sd_init(BlockBackend *bs, bool is_spi);
int sd_do_command(SDState *sd, SDRequest *req,
uint8_t *response);
void sd_write_data(SDState *sd, uint8_t value);

7
include/hw/virtio/virtio-blk.h
View file

@ -17,8 +17,7 @@
#include "hw/virtio/virtio.h"
#include "hw/block/block.h"
#include "sysemu/iothread.h"
#include "block/block.h"
#include "block/accounting.h"
#include "sysemu/block-backend.h"
#define TYPE_VIRTIO_BLK "virtio-blk-device"
#define VIRTIO_BLK(obj) \
@ -121,7 +120,7 @@ struct VirtIOBlockDataPlane;
struct VirtIOBlockReq;
typedef struct VirtIOBlock {
VirtIODevice parent_obj;
BlockDriverState *bs;
BlockBackend *blk;
VirtQueue *vq;
void *rq;
QEMUBH *bh;
@ -159,6 +158,6 @@ int virtio_blk_handle_scsi_req(VirtIOBlock *blk,
void virtio_blk_handle_request(VirtIOBlockReq *req, MultiReqBuffer *mrb);
void virtio_submit_multiwrite(BlockDriverState *bs, MultiReqBuffer *mrb);
void virtio_submit_multiwrite(BlockBackend *blk, MultiReqBuffer *mrb);
#endif

76
include/sysemu/block-backend.h
View file

@ -16,6 +16,15 @@
#include "qemu/typedefs.h"
#include "qapi/error.h"
/*
* TODO Have to include block/block.h for a bunch of block layer
* types. Unfortunately, this pulls in the whole BlockDriverState
* API, which we don't want used by many BlockBackend users. Some of
* the types belong here, and the rest should be split into a common
* header and one for the BlockDriverState API.
*/
#include "block/block.h"
BlockBackend *blk_new(const char *name, Error **errp);
BlockBackend *blk_new_with_bs(const char *name, Error **errp);
void blk_ref(BlockBackend *blk);
@ -28,4 +37,71 @@ BlockDriverState *blk_bs(BlockBackend *blk);
void blk_hide_on_behalf_of_do_drive_del(BlockBackend *blk);
void blk_iostatus_enable(BlockBackend *blk);
int blk_attach_dev(BlockBackend *blk, void *dev);
void blk_attach_dev_nofail(BlockBackend *blk, void *dev);
void blk_detach_dev(BlockBackend *blk, void *dev);
void *blk_get_attached_dev(BlockBackend *blk);
void blk_set_dev_ops(BlockBackend *blk, const BlockDevOps *ops, void *opaque);
int blk_read(BlockBackend *blk, int64_t sector_num, uint8_t *buf,
int nb_sectors);
int blk_read_unthrottled(BlockBackend *blk, int64_t sector_num, uint8_t *buf,
int nb_sectors);
int blk_write(BlockBackend *blk, int64_t sector_num, const uint8_t *buf,
int nb_sectors);
BlockAIOCB *blk_aio_write_zeroes(BlockBackend *blk, int64_t sector_num,
int nb_sectors, BdrvRequestFlags flags,
BlockCompletionFunc *cb, void *opaque);
int blk_pread(BlockBackend *blk, int64_t offset, void *buf, int count);
int blk_pwrite(BlockBackend *blk, int64_t offset, const void *buf, int count);
int64_t blk_getlength(BlockBackend *blk);
void blk_get_geometry(BlockBackend *blk, uint64_t *nb_sectors_ptr);
BlockAIOCB *blk_aio_readv(BlockBackend *blk, int64_t sector_num,
QEMUIOVector *iov, int nb_sectors,
BlockCompletionFunc *cb, void *opaque);
BlockAIOCB *blk_aio_writev(BlockBackend *blk, int64_t sector_num,
QEMUIOVector *iov, int nb_sectors,
BlockCompletionFunc *cb, void *opaque);
BlockAIOCB *blk_aio_flush(BlockBackend *blk,
BlockCompletionFunc *cb, void *opaque);
BlockAIOCB *blk_aio_discard(BlockBackend *blk,
int64_t sector_num, int nb_sectors,
BlockCompletionFunc *cb, void *opaque);
void blk_aio_cancel(BlockAIOCB *acb);
void blk_aio_cancel_async(BlockAIOCB *acb);
int blk_aio_multiwrite(BlockBackend *blk, BlockRequest *reqs, int num_reqs);
int blk_ioctl(BlockBackend *blk, unsigned long int req, void *buf);
BlockAIOCB *blk_aio_ioctl(BlockBackend *blk, unsigned long int req, void *buf,
BlockCompletionFunc *cb, void *opaque);
int blk_flush(BlockBackend *blk);
int blk_flush_all(void);
void blk_drain_all(void);
BlockdevOnError blk_get_on_error(BlockBackend *blk, bool is_read);
BlockErrorAction blk_get_error_action(BlockBackend *blk, bool is_read,
int error);
void blk_error_action(BlockBackend *blk, BlockErrorAction action,
bool is_read, int error);
int blk_is_read_only(BlockBackend *blk);
int blk_is_sg(BlockBackend *blk);
int blk_enable_write_cache(BlockBackend *blk);
void blk_set_enable_write_cache(BlockBackend *blk, bool wce);
int blk_is_inserted(BlockBackend *blk);
void blk_lock_medium(BlockBackend *blk, bool locked);
void blk_eject(BlockBackend *blk, bool eject_flag);
int blk_get_flags(BlockBackend *blk);
void blk_set_guest_block_size(BlockBackend *blk, int align);
void *blk_blockalign(BlockBackend *blk, size_t size);
bool blk_op_is_blocked(BlockBackend *blk, BlockOpType op, Error **errp);
void blk_op_unblock(BlockBackend *blk, BlockOpType op, Error *reason);
void blk_op_block_all(BlockBackend *blk, Error *reason);
void blk_op_unblock_all(BlockBackend *blk, Error *reason);
AioContext *blk_get_aio_context(BlockBackend *blk);
void blk_set_aio_context(BlockBackend *blk, AioContext *new_context);
void blk_io_plug(BlockBackend *blk);
void blk_io_unplug(BlockBackend *blk);
BlockAcctStats *blk_get_stats(BlockBackend *blk);
void *blk_aio_get(const AIOCBInfo *aiocb_info, BlockBackend *blk,
BlockCompletionFunc *cb, void *opaque);
#endif

5
include/sysemu/blockdev.h
View file

@ -14,8 +14,8 @@
#include "qapi/error.h"
#include "qemu/queue.h"
void blockdev_mark_auto_del(BlockDriverState *bs);
void blockdev_auto_del(BlockDriverState *bs);
void blockdev_mark_auto_del(BlockBackend *blk);
void blockdev_auto_del(BlockBackend *blk);
typedef enum {
IF_DEFAULT = -1, /* for use with drive_add() only */
@ -57,7 +57,6 @@ DriveInfo *drive_get_by_index(BlockInterfaceType type, int index);
int drive_get_max_bus(BlockInterfaceType type);
int drive_get_max_devs(BlockInterfaceType type);
DriveInfo *drive_get_next(BlockInterfaceType type);
DriveInfo *drive_get_by_blockdev(BlockDriverState *bs);
QemuOpts *drive_def(const char *optstr);
QemuOpts *drive_add(BlockInterfaceType type, int index, const char *file,

20
include/sysemu/dma.h
View file

@ -197,24 +197,24 @@ void qemu_sglist_add(QEMUSGList *qsg, dma_addr_t base, dma_addr_t len);
void qemu_sglist_destroy(QEMUSGList *qsg);
#endif
typedef BlockAIOCB *DMAIOFunc(BlockDriverState *bs, int64_t sector_num,
typedef BlockAIOCB *DMAIOFunc(BlockBackend *blk, int64_t sector_num,
QEMUIOVector *iov, int nb_sectors,
BlockCompletionFunc *cb, void *opaque);
BlockAIOCB *dma_bdrv_io(BlockDriverState *bs,
QEMUSGList *sg, uint64_t sector_num,
DMAIOFunc *io_func, BlockCompletionFunc *cb,
void *opaque, DMADirection dir);
BlockAIOCB *dma_bdrv_read(BlockDriverState *bs,
BlockAIOCB *dma_blk_io(BlockBackend *blk,
QEMUSGList *sg, uint64_t sector_num,
DMAIOFunc *io_func, BlockCompletionFunc *cb,
void *opaque, DMADirection dir);
BlockAIOCB *dma_blk_read(BlockBackend *blk,
QEMUSGList *sg, uint64_t sector,
BlockCompletionFunc *cb, void *opaque);
BlockAIOCB *dma_blk_write(BlockBackend *blk,
QEMUSGList *sg, uint64_t sector,
BlockCompletionFunc *cb, void *opaque);
BlockAIOCB *dma_bdrv_write(BlockDriverState *bs,
QEMUSGList *sg, uint64_t sector,
BlockCompletionFunc *cb, void *opaque);
uint64_t dma_buf_read(uint8_t *ptr, int32_t len, QEMUSGList *sg);
uint64_t dma_buf_write(uint8_t *ptr, int32_t len, QEMUSGList *sg);
void dma_acct_start(BlockDriverState *bs, BlockAcctCookie *cookie,
void dma_acct_start(BlockBackend *blk, BlockAcctCookie *cookie,
QEMUSGList *sg, enum BlockAcctType type);
#endif