From patchwork Wed May 4 23:55:22 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eric Blake X-Patchwork-Id: 9019781 Return-Path: X-Original-To: patchwork-qemu-devel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 8ADA89F1D3 for ; Thu, 5 May 2016 00:07:03 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id E807E2041A for ; Thu, 5 May 2016 00:07:02 +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 3230920416 for ; Thu, 5 May 2016 00:07:02 +0000 (UTC) Received: from localhost ([::1]:50935 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ay6ok-0005dM-42 for patchwork-qemu-devel@patchwork.kernel.org; Wed, 04 May 2016 20:06:58 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:35608) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ay6f9-0003T0-EW for qemu-devel@nongnu.org; Wed, 04 May 2016 19:57:09 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ay6ex-0004pc-OF for qemu-devel@nongnu.org; Wed, 04 May 2016 19:56:57 -0400 Received: from mx1.redhat.com ([209.132.183.28]:46445) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ay6ef-0004QW-8R; Wed, 04 May 2016 19:56:33 -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 A96EC64D3D; Wed, 4 May 2016 23:56:16 +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 u44NtUhg025795; Wed, 4 May 2016 19:56:16 -0400 From: Eric Blake To: qemu-devel@nongnu.org Date: Wed, 4 May 2016 17:55:22 -0600 Message-Id: <1462406126-22946-17-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-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.39]); Wed, 04 May 2016 23:56:16 +0000 (UTC) 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 16/20] atapi: Switch to byte-based 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_read() should die; switch to byte-based blk_pread() instead. Add new defines ATAPI_SECTOR_BITS and ATAPI_SECTOR_SIZE to use anywhere we were previously scaling BDRV_SECTOR_* by 4, for better legibility. Signed-off-by: Eric Blake --- v4: add new defines for use in more places [jsnow] --- hw/ide/atapi.c | 19 +++++++++++-------- 1 file changed, 11 insertions(+), 8 deletions(-) diff --git a/hw/ide/atapi.c b/hw/ide/atapi.c index 2bb606c..95056d9 100644 --- a/hw/ide/atapi.c +++ b/hw/ide/atapi.c @@ -28,6 +28,9 @@ #include "hw/scsi/scsi.h" #include "sysemu/block-backend.h" +#define ATAPI_SECTOR_BITS (2 + BDRV_SECTOR_BITS) +#define ATAPI_SECTOR_SIZE (1 << ATAPI_SECTOR_BITS) + static void ide_atapi_cmd_read_dma_cb(void *opaque, int ret); static void padstr8(uint8_t *buf, int buf_size, const char *src) @@ -111,7 +114,7 @@ cd_read_sector_sync(IDEState *s) { int ret; block_acct_start(blk_get_stats(s->blk), &s->acct, - 4 * BDRV_SECTOR_SIZE, BLOCK_ACCT_READ); + ATAPI_SECTOR_SIZE, BLOCK_ACCT_READ); #ifdef DEBUG_IDE_ATAPI printf("cd_read_sector_sync: lba=%d\n", s->lba); @@ -119,12 +122,12 @@ cd_read_sector_sync(IDEState *s) switch (s->cd_sector_size) { case 2048: - ret = blk_read(s->blk, (int64_t)s->lba << 2, - s->io_buffer, 4); + ret = blk_pread(s->blk, (int64_t)s->lba << ATAPI_SECTOR_BITS, + s->io_buffer, ATAPI_SECTOR_SIZE); break; case 2352: - ret = blk_read(s->blk, (int64_t)s->lba << 2, - s->io_buffer + 16, 4); + ret = blk_pread(s->blk, (int64_t)s->lba << ATAPI_SECTOR_BITS, + s->io_buffer + 16, ATAPI_SECTOR_SIZE); if (ret >= 0) { cd_data_to_raw(s->io_buffer, s->lba); } @@ -182,7 +185,7 @@ static int cd_read_sector(IDEState *s) s->iov.iov_base = (s->cd_sector_size == 2352) ? s->io_buffer + 16 : s->io_buffer; - s->iov.iov_len = 4 * BDRV_SECTOR_SIZE; + s->iov.iov_len = ATAPI_SECTOR_SIZE; qemu_iovec_init_external(&s->qiov, &s->iov, 1); #ifdef DEBUG_IDE_ATAPI @@ -190,7 +193,7 @@ static int cd_read_sector(IDEState *s) #endif block_acct_start(blk_get_stats(s->blk), &s->acct, - 4 * BDRV_SECTOR_SIZE, BLOCK_ACCT_READ); + ATAPI_SECTOR_SIZE, BLOCK_ACCT_READ); ide_buffered_readv(s, (int64_t)s->lba << 2, &s->qiov, 4, cd_read_sector_cb, s); @@ -435,7 +438,7 @@ static void ide_atapi_cmd_read_dma_cb(void *opaque, int ret) #endif s->bus->dma->iov.iov_base = (void *)(s->io_buffer + data_offset); - s->bus->dma->iov.iov_len = n * 4 * 512; + s->bus->dma->iov.iov_len = n * ATAPI_SECTOR_SIZE; qemu_iovec_init_external(&s->bus->dma->qiov, &s->bus->dma->iov, 1); s->bus->dma->aiocb = ide_buffered_readv(s, (int64_t)s->lba << 2,