Date: Wed, 22 Sep 2010 19:59:11 +0000 (UTC) From: Marius Strobl <marius@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-7@freebsd.org Subject: svn commit: r213017 - in stable/7/sys: sparc64/sparc64 sun4v/sun4v Message-ID: <201009221959.o8MJxBsu041384@svn.freebsd.org>
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Author: marius Date: Wed Sep 22 19:59:11 2010 New Revision: 213017 URL: http://svn.freebsd.org/changeset/base/213017 Log: MFC: r212676 Sync with other platforms: - make dflt_lock() always panic, - add kludge to use contigmalloc() when the alignment is larger than the size and print a diagnostic when we didn't satisfy the alignment. Modified: stable/7/sys/sparc64/sparc64/bus_machdep.c stable/7/sys/sun4v/sun4v/bus_machdep.c Directory Properties: stable/7/sys/ (props changed) stable/7/sys/cddl/contrib/opensolaris/ (props changed) stable/7/sys/contrib/dev/acpica/ (props changed) stable/7/sys/contrib/pf/ (props changed) Modified: stable/7/sys/sparc64/sparc64/bus_machdep.c ============================================================================== --- stable/7/sys/sparc64/sparc64/bus_machdep.c Wed Sep 22 19:59:11 2010 (r213016) +++ stable/7/sys/sparc64/sparc64/bus_machdep.c Wed Sep 22 19:59:11 2010 (r213017) @@ -182,11 +182,8 @@ busdma_lock_mutex(void *arg, bus_dma_loc static void dflt_lock(void *arg, bus_dma_lock_op_t op) { -#ifdef INVARIANTS + panic("driver error: busdma dflt_lock called"); -#else - printf("DRIVER_ERROR: busdma dflt_lock called\n"); -#endif } /* @@ -638,9 +635,18 @@ nexus_dmamem_alloc(bus_dma_tag_t dmat, v if (flags & BUS_DMA_ZERO) mflags |= M_ZERO; - if ((dmat->dt_maxsize <= PAGE_SIZE)) { + /* + * XXX: + * (dmat->dt_alignment < dmat->dt_maxsize) is just a quick hack; the + * exact alignment guarantees of malloc need to be nailed down, and + * the code below should be rewritten to take that into account. + * + * In the meantime, we'll warn the user if malloc gets it wrong. + */ + if (dmat->dt_maxsize <= PAGE_SIZE && + dmat->dt_alignment < dmat->dt_maxsize) *vaddr = malloc(dmat->dt_maxsize, M_DEVBUF, mflags); - } else { + else { /* * XXX use contigmalloc until it is merged into this * facility and handles multi-seg allocations. Nobody @@ -653,6 +659,8 @@ nexus_dmamem_alloc(bus_dma_tag_t dmat, v } if (*vaddr == NULL) return (ENOMEM); + if ((uintptr_t)*vaddr % dmat->dt_alignment) + printf("%s: failed to align memory properly.\n", __func__); return (0); } @@ -664,11 +672,11 @@ static void nexus_dmamem_free(bus_dma_tag_t dmat, void *vaddr, bus_dmamap_t map) { - if ((dmat->dt_maxsize <= PAGE_SIZE)) + if (dmat->dt_maxsize <= PAGE_SIZE && + dmat->dt_alignment < dmat->dt_maxsize) free(vaddr, M_DEVBUF); - else { + else contigfree(vaddr, dmat->dt_maxsize, M_DEVBUF); - } } struct bus_dma_methods nexus_dma_methods = { Modified: stable/7/sys/sun4v/sun4v/bus_machdep.c ============================================================================== --- stable/7/sys/sun4v/sun4v/bus_machdep.c Wed Sep 22 19:59:11 2010 (r213016) +++ stable/7/sys/sun4v/sun4v/bus_machdep.c Wed Sep 22 19:59:11 2010 (r213017) @@ -181,11 +181,8 @@ busdma_lock_mutex(void *arg, bus_dma_loc static void dflt_lock(void *arg, bus_dma_lock_op_t op) { -#ifdef INVARIANTS + panic("driver error: busdma dflt_lock called"); -#else - printf("DRIVER_ERROR: busdma dflt_lock called\n"); -#endif } /* @@ -647,9 +644,18 @@ nexus_dmamem_alloc(bus_dma_tag_t dmat, v if (flags & BUS_DMA_ZERO) mflags |= M_ZERO; - if ((dmat->dt_maxsize <= PAGE_SIZE)) { + /* + * XXX: + * (dmat->dt_alignment < dmat->dt_maxsize) is just a quick hack; the + * exact alignment guarantees of malloc need to be nailed down, and + * the code below should be rewritten to take that into account. + * + * In the meantime, we'll warn the user if malloc gets it wrong. + */ + if (dmat->dt_maxsize <= PAGE_SIZE && + dmat->dt_alignment < dmat->dt_maxsize) *vaddr = malloc(dmat->dt_maxsize, M_DEVBUF, mflags); - } else { + else { /* * XXX use contigmalloc until it is merged into this * facility and handles multi-seg allocations. Nobody @@ -662,6 +668,8 @@ nexus_dmamem_alloc(bus_dma_tag_t dmat, v } if (*vaddr == NULL) return (ENOMEM); + if ((uintptr_t)*vaddr % dmat->dt_alignment) + printf("%s: failed to align memory properly.\n", __func__); return (0); } @@ -673,11 +681,11 @@ static void nexus_dmamem_free(bus_dma_tag_t dmat, void *vaddr, bus_dmamap_t map) { - if ((dmat->dt_maxsize <= PAGE_SIZE)) + if (dmat->dt_maxsize <= PAGE_SIZE && + dmat->dt_alignment < dmat->dt_maxsize) free(vaddr, M_DEVBUF); - else { + else contigfree(vaddr, dmat->dt_maxsize, M_DEVBUF); - } } struct bus_dma_methods nexus_dma_methods = {
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