From ad8808923cef8f50c87bf7ceb363cf01dd96d5fb Mon Sep 17 00:00:00 2001 From: John Snow Date: Fri, 14 Nov 2014 22:07:21 +0100 Subject: [PATCH 33/48] ide: wrap start_dma callback Message-id: <1416002855-4964-7-git-send-email-jsnow@redhat.com> Patchwork-id: 62390 O-Subject: [RHEV-7.1 qemu-kvm-rhev PATCH v2 06/20] ide: wrap start_dma callback Bugzilla: 1024599 RH-Acked-by: Michael S. Tsirkin RH-Acked-by: Paolo Bonzini RH-Acked-by: Stefan Hajnoczi From: Paolo Bonzini Make it optional and prepare for the next patches. Signed-off-by: Paolo Bonzini Signed-off-by: John Snow Signed-off-by: Stefan Hajnoczi (cherry picked from commit 4855b57639d181362678ab09614a7f753df8e466) Signed-off-by: John Snow Signed-off-by: Miroslav Rezanina --- hw/ide/atapi.c | 6 ++---- hw/ide/core.c | 15 ++++++++------- hw/ide/internal.h | 1 + 3 files changed, 11 insertions(+), 11 deletions(-) diff --git a/hw/ide/atapi.c b/hw/ide/atapi.c index f7d2009..d13395e 100644 --- a/hw/ide/atapi.c +++ b/hw/ide/atapi.c @@ -255,8 +255,7 @@ static void ide_atapi_cmd_reply(IDEState *s, int size, int max_size) if (s->atapi_dma) { bdrv_acct_start(s->bs, &s->acct, size, BDRV_ACCT_READ); s->status = READY_STAT | SEEK_STAT | DRQ_STAT; - s->bus->dma->ops->start_dma(s->bus->dma, s, - ide_atapi_cmd_read_dma_cb); + ide_start_dma(s, ide_atapi_cmd_read_dma_cb); } else { s->status = READY_STAT | SEEK_STAT; ide_atapi_cmd_reply_end(s); @@ -375,8 +374,7 @@ static void ide_atapi_cmd_read_dma(IDEState *s, int lba, int nb_sectors, /* XXX: check if BUSY_STAT should be set */ s->status = READY_STAT | SEEK_STAT | DRQ_STAT | BUSY_STAT; - s->bus->dma->ops->start_dma(s->bus->dma, s, - ide_atapi_cmd_read_dma_cb); + ide_start_dma(s, ide_atapi_cmd_read_dma_cb); } static void ide_atapi_cmd_read(IDEState *s, int lba, int nb_sectors, diff --git a/hw/ide/core.c b/hw/ide/core.c index 56e0a79..034cf38 100644 --- a/hw/ide/core.c +++ b/hw/ide/core.c @@ -784,7 +784,14 @@ static void ide_sector_start_dma(IDEState *s, enum ide_dma_cmd dma_cmd) break; } - s->bus->dma->ops->start_dma(s->bus->dma, s, ide_dma_cb); + ide_start_dma(s, ide_dma_cb); +} + +void ide_start_dma(IDEState *s, BlockDriverCompletionFunc *cb) +{ + if (s->bus->dma->ops->start_dma) { + s->bus->dma->ops->start_dma(s->bus->dma, s, cb); + } } static void ide_sector_write_timer_cb(void *opaque) @@ -2272,11 +2279,6 @@ static void ide_init1(IDEBus *bus, int unit) ide_sector_write_timer_cb, s); } -static void ide_nop_start(IDEDMA *dma, IDEState *s, - BlockDriverCompletionFunc *cb) -{ -} - static int ide_nop_int(IDEDMA *dma, int x) { return 0; @@ -2287,7 +2289,6 @@ static void ide_nop_restart(void *opaque, int x, RunState y) } static const IDEDMAOps ide_dma_nop_ops = { - .start_dma = ide_nop_start, .prepare_buf = ide_nop_int, .rw_buf = ide_nop_int, .set_unit = ide_nop_int, diff --git a/hw/ide/internal.h b/hw/ide/internal.h index 64fbf2f..2fe1f0a 100644 --- a/hw/ide/internal.h +++ b/hw/ide/internal.h @@ -532,6 +532,7 @@ void ide_bus_reset(IDEBus *bus); int64_t ide_get_sector(IDEState *s); void ide_set_sector(IDEState *s, int64_t sector_num); +void ide_start_dma(IDEState *s, BlockDriverCompletionFunc *cb); void ide_dma_error(IDEState *s); void ide_atapi_cmd_ok(IDEState *s); -- 1.8.3.1