From owner-svn-src-all@freebsd.org Thu May 16 20:41:30 2019 Return-Path: Delivered-To: svn-src-all@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 9433215A6E75; Thu, 16 May 2019 20:41:30 +0000 (UTC) (envelope-from tychon@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) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 39FD173AB4; Thu, 16 May 2019 20:41:30 +0000 (UTC) (envelope-from tychon@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id C3AED260A9; Thu, 16 May 2019 20:41:29 +0000 (UTC) (envelope-from tychon@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id x4GKfTQx013356; Thu, 16 May 2019 20:41:29 GMT (envelope-from tychon@FreeBSD.org) Received: (from tychon@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id x4GKfTwb013353; Thu, 16 May 2019 20:41:29 GMT (envelope-from tychon@FreeBSD.org) Message-Id: <201905162041.x4GKfTwb013353@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: tychon set sender to tychon@FreeBSD.org using -f From: Tycho Nightingale Date: Thu, 16 May 2019 20:41:29 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r347890 - in head/sys/dev: aac bge X-SVN-Group: head X-SVN-Commit-Author: tychon X-SVN-Commit-Paths: in head/sys/dev: aac bge X-SVN-Commit-Revision: 347890 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: 39FD173AB4 X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org X-Spamd-Result: default: False [-2.98 / 15.00]; local_wl_from(0.00)[FreeBSD.org]; NEURAL_HAM_MEDIUM(-1.00)[-0.999,0]; NEURAL_HAM_SHORT(-0.98)[-0.978,0]; ASN(0.00)[asn:11403, ipnet:2610:1c1:1::/48, country:US]; NEURAL_HAM_LONG(-1.00)[-1.000,0] X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 16 May 2019 20:41:30 -0000 Author: tychon Date: Thu May 16 20:41:28 2019 New Revision: 347890 URL: https://svnweb.freebsd.org/changeset/base/347890 Log: reinstate 4GB DMA boundary workarounds for bge and aac Reviewed by: kib Sponsored by: Dell EMC Isilon Differential Revision: https://reviews.freebsd.org/D20277 Modified: head/sys/dev/aac/aac_pci.c head/sys/dev/bge/if_bge.c head/sys/dev/bge/if_bgereg.h Modified: head/sys/dev/aac/aac_pci.c ============================================================================== --- head/sys/dev/aac/aac_pci.c Thu May 16 19:32:11 2019 (r347889) +++ head/sys/dev/aac/aac_pci.c Thu May 16 20:41:28 2019 (r347890) @@ -443,7 +443,8 @@ aac_pci_attach(device_t dev) * Note that some of these controllers are 64-bit capable. */ if (bus_dma_tag_create(bus_get_dma_tag(dev), /* parent */ - PAGE_SIZE, 0, /* algnmnt, boundary */ + PAGE_SIZE, /* algnmnt */ + ((bus_size_t)((uint64_t)1 << 32)), /* boundary*/ BUS_SPACE_MAXADDR, /* lowaddr */ BUS_SPACE_MAXADDR, /* highaddr */ NULL, NULL, /* filter, filterarg */ Modified: head/sys/dev/bge/if_bge.c ============================================================================== --- head/sys/dev/bge/if_bge.c Thu May 16 19:32:11 2019 (r347889) +++ head/sys/dev/bge/if_bge.c Thu May 16 20:41:28 2019 (r347890) @@ -2927,10 +2927,14 @@ bge_dma_ring_alloc(struct bge_softc *sc, bus_size_t al bus_addr_t *paddr, const char *msg) { struct bge_dmamap_arg ctx; + bus_addr_t lowaddr; + bus_size_t ring_end; int error; + lowaddr = BUS_SPACE_MAXADDR; +again: error = bus_dma_tag_create(sc->bge_cdata.bge_parent_tag, - alignment, 0, BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR, NULL, + alignment, 0, lowaddr, BUS_SPACE_MAXADDR, NULL, NULL, maxsize, 1, maxsize, 0, NULL, NULL, tag); if (error != 0) { device_printf(sc->bge_dev, @@ -2955,6 +2959,25 @@ bge_dma_ring_alloc(struct bge_softc *sc, bus_size_t al return (ENOMEM); } *paddr = ctx.bge_busaddr; + ring_end = *paddr + maxsize; + if ((sc->bge_flags & BGE_FLAG_4G_BNDRY_BUG) != 0 && + BGE_ADDR_HI(*paddr) != BGE_ADDR_HI(ring_end)) { + /* + * 4GB boundary crossed. Limit maximum allowable DMA + * address space to 32bit and try again. + */ + bus_dmamap_unload(*tag, *map); + bus_dmamem_free(*tag, *ring, *map); + bus_dma_tag_destroy(*tag); + if (bootverbose) + device_printf(sc->bge_dev, "4GB boundary crossed, " + "limit DMA address space to 32bit for %s\n", msg); + *ring = NULL; + *tag = NULL; + *map = NULL; + lowaddr = BUS_SPACE_MAXADDR_32BIT; + goto again; + } return (0); } @@ -2962,7 +2985,7 @@ static int bge_dma_alloc(struct bge_softc *sc) { bus_addr_t lowaddr; - bus_size_t rxmaxsegsz, sbsz, txsegsz, txmaxsegsz; + bus_size_t boundary, sbsz, rxmaxsegsz, txsegsz, txmaxsegsz; int i, error; lowaddr = BUS_SPACE_MAXADDR; @@ -3049,7 +3072,9 @@ bge_dma_alloc(struct bge_softc *sc) } /* Create parent tag for buffers. */ + boundary = 0; if ((sc->bge_flags & BGE_FLAG_4G_BNDRY_BUG) != 0) { + boundary = BGE_DMA_BNDRY; /* * XXX * watchdog timeout issue was observed on BCM5704 which @@ -3060,10 +3085,10 @@ bge_dma_alloc(struct bge_softc *sc) if (sc->bge_pcixcap != 0) lowaddr = BUS_SPACE_MAXADDR_32BIT; } - error = bus_dma_tag_create(bus_get_dma_tag(sc->bge_dev), 1, 0, lowaddr, - BUS_SPACE_MAXADDR, NULL, NULL, BUS_SPACE_MAXSIZE_32BIT, 0, - BUS_SPACE_MAXSIZE_32BIT, 0, NULL, NULL, - &sc->bge_cdata.bge_buffer_tag); + error = bus_dma_tag_create(bus_get_dma_tag(sc->bge_dev), + 1, boundary, lowaddr, BUS_SPACE_MAXADDR, NULL, + NULL, BUS_SPACE_MAXSIZE_32BIT, 0, BUS_SPACE_MAXSIZE_32BIT, + 0, NULL, NULL, &sc->bge_cdata.bge_buffer_tag); if (error != 0) { device_printf(sc->bge_dev, "could not allocate buffer dma tag\n"); Modified: head/sys/dev/bge/if_bgereg.h ============================================================================== --- head/sys/dev/bge/if_bgereg.h Thu May 16 19:32:11 2019 (r347889) +++ head/sys/dev/bge/if_bgereg.h Thu May 16 20:41:28 2019 (r347890) @@ -2866,6 +2866,12 @@ struct bge_gib { #define BGE_DMA_MAXADDR 0xFFFFFFFFFF #endif +#if (BUS_SPACE_MAXADDR > 0xFFFFFFFF) +#define BGE_DMA_BNDRY 0x100000000 +#else +#define BGE_DMA_BNDRY 0 +#endif + /* * Ring structures. Most of these reside in host memory and we tell * the NIC where they are via the ring control blocks. The exceptions