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hw: Convert from BlockDriverState to BlockBackend, mostly

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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

24
hw/block/pflash_cfi01.c
View file

@ -38,7 +38,7 @@
#include "hw/hw.h"
#include "hw/block/flash.h"
#include "block/block.h"
#include "sysemu/block-backend.h"
#include "qemu/timer.h"
#include "qemu/bitops.h"
#include "exec/address-spaces.h"
@ -69,7 +69,7 @@ struct pflash_t {
SysBusDevice parent_obj;
/*< public >*/
BlockDriverState *bs;
BlockBackend *blk;
uint32_t nb_blocs;
uint64_t sector_len;
uint8_t bank_width;
@ -395,13 +395,13 @@ static void pflash_update(pflash_t *pfl, int offset,
int size)
{
int offset_end;
if (pfl->bs) {
if (pfl->blk) {
offset_end = offset + size;
/* round to sectors */
offset = offset >> 9;
offset_end = (offset_end + 511) >> 9;
bdrv_write(pfl->bs, offset, pfl->storage + (offset << 9),
offset_end - offset);
blk_write(pfl->blk, offset, pfl->storage + (offset << 9),
offset_end - offset);
}
}
@ -784,9 +784,9 @@ static void pflash_cfi01_realize(DeviceState *dev, Error **errp)
pfl->storage = memory_region_get_ram_ptr(&pfl->mem);
sysbus_init_mmio(SYS_BUS_DEVICE(dev), &pfl->mem);
if (pfl->bs) {
if (pfl->blk) {
/* read the initial flash content */
ret = bdrv_read(pfl->bs, 0, pfl->storage, total_len >> 9);
ret = blk_read(pfl->blk, 0, pfl->storage, total_len >> 9);
if (ret < 0) {
vmstate_unregister_ram(&pfl->mem, DEVICE(pfl));
@ -795,8 +795,8 @@ static void pflash_cfi01_realize(DeviceState *dev, Error **errp)
}
}
if (pfl->bs) {
pfl->ro = bdrv_is_read_only(pfl->bs);
if (pfl->blk) {
pfl->ro = blk_is_read_only(pfl->blk);
} else {
pfl->ro = 0;
}
@ -898,7 +898,7 @@ static void pflash_cfi01_realize(DeviceState *dev, Error **errp)
}
static Property pflash_cfi01_properties[] = {
DEFINE_PROP_DRIVE("drive", struct pflash_t, bs),
DEFINE_PROP_DRIVE("drive", struct pflash_t, blk),
/* num-blocks is the number of blocks actually visible to the guest,
* ie the total size of the device divided by the sector length.
* If we're emulating flash devices wired in parallel the actual
@ -962,14 +962,14 @@ type_init(pflash_cfi01_register_types)
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 bank_width, uint16_t id0, uint16_t id1,
uint16_t id2, uint16_t id3, int be)
{
DeviceState *dev = qdev_create(NULL, TYPE_CFI_PFLASH01);
if (bs && qdev_prop_set_drive(dev, "drive", bs)) {
if (blk && qdev_prop_set_drive(dev, "drive", blk)) {
abort();
}
qdev_prop_set_uint32(dev, "num-blocks", nb_blocs);