From patchwork Wed May 4 23:55:12 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eric Blake X-Patchwork-Id: 9019601 Return-Path: X-Original-To: patchwork-qemu-devel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 2A1DBBF29F for ; Wed, 4 May 2016 23:56:50 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 5B59520416 for ; Wed, 4 May 2016 23:56:49 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 5C14A203DC for ; Wed, 4 May 2016 23:56:48 +0000 (UTC) Received: from localhost ([::1]:50825 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ay6eq-0002aK-IZ for patchwork-qemu-devel@patchwork.kernel.org; Wed, 04 May 2016 19:56:44 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:35061) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ay6eY-0002HA-5F for qemu-devel@nongnu.org; Wed, 04 May 2016 19:56:32 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ay6eL-0004OW-Tx for qemu-devel@nongnu.org; Wed, 04 May 2016 19:56:20 -0400 Received: from mx1.redhat.com ([209.132.183.28]:46412) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ay6e2-00042c-I1; Wed, 04 May 2016 19:55:54 -0400 Received: from int-mx09.intmail.prod.int.phx2.redhat.com (int-mx09.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id F3317C049D60; Wed, 4 May 2016 23:55:37 +0000 (UTC) Received: from red.redhat.com (ovpn-113-154.phx2.redhat.com [10.3.113.154]) by int-mx09.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id u44NtUhW025795; Wed, 4 May 2016 19:55:37 -0400 From: Eric Blake To: qemu-devel@nongnu.org Date: Wed, 4 May 2016 17:55:12 -0600 Message-Id: <1462406126-22946-7-git-send-email-eblake@redhat.com> In-Reply-To: <1462406126-22946-1-git-send-email-eblake@redhat.com> References: <1462406126-22946-1-git-send-email-eblake@redhat.com> X-Scanned-By: MIMEDefang 2.68 on 10.5.11.22 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PATCH v6 06/20] ide: Switch to byte-based aio block access X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: kwolf@redhat.com, John Snow , qemu-block@nongnu.org Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Sector-based blk_aio_readv() and blk_aio_writev() should die; switch to byte-based blk_aio_preadv() and blk_aio_pwritev() instead. The patch had to touch multiple files at once, because dma_blk_io() takes pointers to the functions, and ide_issue_trim() piggybacks on the same interface (while ignoring offset under the hood). Signed-off-by: Eric Blake --- hw/ide/internal.h | 2 +- include/sysemu/dma.h | 4 ++-- dma-helpers.c | 14 +++++++------- hw/ide/core.c | 10 +++++----- hw/ide/macio.c | 9 +++------ 5 files changed, 18 insertions(+), 21 deletions(-) diff --git a/hw/ide/internal.h b/hw/ide/internal.h index d2c458f..ceb9e59 100644 --- a/hw/ide/internal.h +++ b/hw/ide/internal.h @@ -614,7 +614,7 @@ void ide_transfer_start(IDEState *s, uint8_t *buf, int size, void ide_transfer_stop(IDEState *s); void ide_set_inactive(IDEState *s, bool more); BlockAIOCB *ide_issue_trim(BlockBackend *blk, - int64_t sector_num, QEMUIOVector *qiov, int nb_sectors, + int64_t offset, QEMUIOVector *qiov, BdrvRequestFlags flags, BlockCompletionFunc *cb, void *opaque); BlockAIOCB *ide_buffered_readv(IDEState *s, int64_t sector_num, QEMUIOVector *iov, int nb_sectors, diff --git a/include/sysemu/dma.h b/include/sysemu/dma.h index b0fbb9b..0f7cd4d 100644 --- a/include/sysemu/dma.h +++ b/include/sysemu/dma.h @@ -197,8 +197,8 @@ void qemu_sglist_add(QEMUSGList *qsg, dma_addr_t base, dma_addr_t len); void qemu_sglist_destroy(QEMUSGList *qsg); #endif -typedef BlockAIOCB *DMAIOFunc(BlockBackend *blk, int64_t sector_num, - QEMUIOVector *iov, int nb_sectors, +typedef BlockAIOCB *DMAIOFunc(BlockBackend *blk, int64_t offset, + QEMUIOVector *iov, BdrvRequestFlags flags, BlockCompletionFunc *cb, void *opaque); BlockAIOCB *dma_blk_io(BlockBackend *blk, diff --git a/dma-helpers.c b/dma-helpers.c index 4ad0bca..a6cc15f 100644 --- a/dma-helpers.c +++ b/dma-helpers.c @@ -73,7 +73,7 @@ typedef struct { BlockBackend *blk; BlockAIOCB *acb; QEMUSGList *sg; - uint64_t sector_num; + uint64_t offset; DMADirection dir; int sg_cur_index; dma_addr_t sg_cur_byte; @@ -130,7 +130,7 @@ static void dma_blk_cb(void *opaque, int ret) trace_dma_blk_cb(dbs, ret); dbs->acb = NULL; - dbs->sector_num += dbs->iov.size / 512; + dbs->offset += dbs->iov.size; if (dbs->sg_cur_index == dbs->sg->nsg || ret < 0) { dma_complete(dbs, ret); @@ -164,8 +164,8 @@ static void dma_blk_cb(void *opaque, int ret) qemu_iovec_discard_back(&dbs->iov, dbs->iov.size & ~BDRV_SECTOR_MASK); } - dbs->acb = dbs->io_func(dbs->blk, dbs->sector_num, &dbs->iov, - dbs->iov.size / 512, dma_blk_cb, dbs); + dbs->acb = dbs->io_func(dbs->blk, dbs->offset, &dbs->iov, 0, + dma_blk_cb, dbs); assert(dbs->acb); } @@ -203,7 +203,7 @@ BlockAIOCB *dma_blk_io( dbs->acb = NULL; dbs->blk = blk; dbs->sg = sg; - dbs->sector_num = sector_num; + dbs->offset = sector_num << BDRV_SECTOR_BITS; dbs->sg_cur_index = 0; dbs->sg_cur_byte = 0; dbs->dir = dir; @@ -219,7 +219,7 @@ BlockAIOCB *dma_blk_read(BlockBackend *blk, QEMUSGList *sg, uint64_t sector, void (*cb)(void *opaque, int ret), void *opaque) { - return dma_blk_io(blk, sg, sector, blk_aio_readv, cb, opaque, + return dma_blk_io(blk, sg, sector, blk_aio_preadv, cb, opaque, DMA_DIRECTION_FROM_DEVICE); } @@ -227,7 +227,7 @@ BlockAIOCB *dma_blk_write(BlockBackend *blk, QEMUSGList *sg, uint64_t sector, void (*cb)(void *opaque, int ret), void *opaque) { - return dma_blk_io(blk, sg, sector, blk_aio_writev, cb, opaque, + return dma_blk_io(blk, sg, sector, blk_aio_pwritev, cb, opaque, DMA_DIRECTION_TO_DEVICE); } diff --git a/hw/ide/core.c b/hw/ide/core.c index 41e6a2d..fe2bfba 100644 --- a/hw/ide/core.c +++ b/hw/ide/core.c @@ -442,7 +442,7 @@ static void ide_issue_trim_cb(void *opaque, int ret) } BlockAIOCB *ide_issue_trim(BlockBackend *blk, - int64_t sector_num, QEMUIOVector *qiov, int nb_sectors, + int64_t offset, QEMUIOVector *qiov, BdrvRequestFlags flags, BlockCompletionFunc *cb, void *opaque) { TrimAIOCB *iocb; @@ -616,8 +616,8 @@ BlockAIOCB *ide_buffered_readv(IDEState *s, int64_t sector_num, req->iov.iov_len = iov->size; qemu_iovec_init_external(&req->qiov, &req->iov, 1); - aioreq = blk_aio_readv(s->blk, sector_num, &req->qiov, nb_sectors, - ide_buffered_readv_cb, req); + aioreq = blk_aio_preadv(s->blk, sector_num << BDRV_SECTOR_BITS, + &req->qiov, 0, ide_buffered_readv_cb, req); QLIST_INSERT_HEAD(&s->buffered_requests, req, list); return aioreq; @@ -1006,8 +1006,8 @@ static void ide_sector_write(IDEState *s) block_acct_start(blk_get_stats(s->blk), &s->acct, n * BDRV_SECTOR_SIZE, BLOCK_ACCT_WRITE); - s->pio_aiocb = blk_aio_writev(s->blk, sector_num, &s->qiov, n, - ide_sector_write_cb, s); + s->pio_aiocb = blk_aio_pwritev(s->blk, sector_num << BDRV_SECTOR_BITS, + &s->qiov, 0, ide_sector_write_cb, s); } static void ide_flush_cb(void *opaque, int ret) diff --git a/hw/ide/macio.c b/hw/ide/macio.c index ae29b6f..d7d9c0f 100644 --- a/hw/ide/macio.c +++ b/hw/ide/macio.c @@ -120,8 +120,7 @@ static void pmac_dma_read(BlockBackend *blk, MACIO_DPRINTF("--- Block read transfer - sector_num: %" PRIx64 " " "nsector: %x\n", (offset >> 9), (bytes >> 9)); - s->bus->dma->aiocb = blk_aio_readv(blk, (offset >> 9), &io->iov, - (bytes >> 9), cb, io); + s->bus->dma->aiocb = blk_aio_preadv(blk, offset, &io->iov, 0, cb, io); } static void pmac_dma_write(BlockBackend *blk, @@ -205,8 +204,7 @@ static void pmac_dma_write(BlockBackend *blk, MACIO_DPRINTF("--- Block write transfer - sector_num: %" PRIx64 " " "nsector: %x\n", (offset >> 9), (bytes >> 9)); - s->bus->dma->aiocb = blk_aio_writev(blk, (offset >> 9), &io->iov, - (bytes >> 9), cb, io); + s->bus->dma->aiocb = blk_aio_pwritev(blk, offset, &io->iov, 0, cb, io); } static void pmac_dma_trim(BlockBackend *blk, @@ -232,8 +230,7 @@ static void pmac_dma_trim(BlockBackend *blk, s->io_buffer_index += io->len; io->len = 0; - s->bus->dma->aiocb = ide_issue_trim(blk, (offset >> 9), &io->iov, - (bytes >> 9), cb, io); + s->bus->dma->aiocb = ide_issue_trim(blk, offset, &io->iov, 0, cb, io); } static void pmac_ide_atapi_transfer_cb(void *opaque, int ret)