From owner-dev-commits-src-main@freebsd.org Fri Apr 16 19:51:04 2021 Return-Path: Delivered-To: dev-commits-src-main@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 17CBA5DD88E; Fri, 16 Apr 2021 19:51:04 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4FMRfH6ZRRz4m5p; Fri, 16 Apr 2021 19:51:03 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org (gitrepo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:5]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id CE5C625D0; Fri, 16 Apr 2021 19:51:03 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org ([127.0.1.44]) by gitrepo.freebsd.org (8.16.1/8.16.1) with ESMTP id 13GJp3q2095461; Fri, 16 Apr 2021 19:51:03 GMT (envelope-from git@gitrepo.freebsd.org) Received: (from git@localhost) by gitrepo.freebsd.org (8.16.1/8.16.1/Submit) id 13GJp3SO095460; Fri, 16 Apr 2021 19:51:03 GMT (envelope-from git) Date: Fri, 16 Apr 2021 19:51:03 GMT Message-Id: <202104161951.13GJp3SO095460@gitrepo.freebsd.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org From: Alexander Motin Subject: git: 3e347834200b - main - pms(4): Limit maximum I/O size to 256KB instead of 1MB. MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: mav X-Git-Repository: src X-Git-Refname: refs/heads/main X-Git-Reftype: branch X-Git-Commit: 3e347834200b5d91a33384e696793e4ac20a44d4 Auto-Submitted: auto-generated X-BeenThere: dev-commits-src-main@freebsd.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Commit messages for the main branch of the src repository List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 16 Apr 2021 19:51:04 -0000 The branch main has been updated by mav: URL: https://cgit.FreeBSD.org/src/commit/?id=3e347834200b5d91a33384e696793e4ac20a44d4 commit 3e347834200b5d91a33384e696793e4ac20a44d4 Author: Alexander Motin AuthorDate: 2021-04-16 19:39:01 +0000 Commit: Alexander Motin CommitDate: 2021-04-16 19:50:34 +0000 pms(4): Limit maximum I/O size to 256KB instead of 1MB. There is a weird limit of AGTIAPI_MAX_DMA_SEGS (128) S/G segments per I/O since the initial driver import. I don't know why it was added, can only guess some hardware limitation, but in worst case it means maximum I/O size of 508KB. Respect it to be safe, rounding to 256KB. MFC after: 1 week Sponsored by: iXsystems, Inc. --- sys/dev/pms/freebsd/driver/ini/src/agdef.h | 2 +- sys/dev/pms/freebsd/driver/ini/src/agtiapi.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/sys/dev/pms/freebsd/driver/ini/src/agdef.h b/sys/dev/pms/freebsd/driver/ini/src/agdef.h index 4c2ba2867f5f..b58741a434c7 100644 --- a/sys/dev/pms/freebsd/driver/ini/src/agdef.h +++ b/sys/dev/pms/freebsd/driver/ini/src/agdef.h @@ -62,7 +62,7 @@ EW 09-17-2004 1.0.0 Constant definitions #define AGTIAPI_MAX_DEVICE_7H 256 /*Max devices per channel in 7H */ #define AGTIAPI_MAX_DEVICE_8H 512 /*Max devices per channel in 8H*/ #define AGTIAPI_MAX_CAM_Q_DEPTH 1024 -#define AGTIAPI_NSEGS (btoc(maxphys) + 1) +#define AGTIAPI_NSEGS (MIN(btoc(maxphys), 64) + 1) /* ** Adapter specific defines */ diff --git a/sys/dev/pms/freebsd/driver/ini/src/agtiapi.c b/sys/dev/pms/freebsd/driver/ini/src/agtiapi.c index 4ce32d0ce6c0..a2b20c9e9264 100644 --- a/sys/dev/pms/freebsd/driver/ini/src/agtiapi.c +++ b/sys/dev/pms/freebsd/driver/ini/src/agtiapi.c @@ -1834,7 +1834,7 @@ static void agtiapi_cam_action( struct cam_sim *sim, union ccb * ccb ) cpi->max_target = maxTargets - 1; cpi->max_lun = AGTIAPI_MAX_LUN; /* Max supported I/O size, in bytes. */ - cpi->maxio = ulmin(1024 * 1024, maxphys); + cpi->maxio = ctob(AGTIAPI_NSEGS - 1); cpi->initiator_id = 255; strlcpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); strlcpy(cpi->hba_vid, "PMC", HBA_IDLEN);