From 14386d7e3174d157ac5bf93f4ae751d8c0517992 Mon Sep 17 00:00:00 2001 From: Brad Smith Date: Fri, 12 May 2006 20:48:20 +0000 Subject: Keep track of which DMA window was actually used to map the request (not always the passed in DMA tag if we try direct-map and then fall back to sgmap-mapped). Use the actual window when performing dmamap_sync and dmamap_unload operations. From NetBSD ok martin@ --- sys/arch/alpha/dev/bus_dma.c | 7 ++++++- sys/arch/alpha/dev/sgmap_typedep.c | 5 ++++- sys/arch/alpha/include/bus.h | 13 ++++++++++--- sys/arch/alpha/isa/isadma_bounce.c | 4 +++- 4 files changed, 23 insertions(+), 6 deletions(-) (limited to 'sys') diff --git a/sys/arch/alpha/dev/bus_dma.c b/sys/arch/alpha/dev/bus_dma.c index 6a2bf65b4f3..906d9169769 100644 --- a/sys/arch/alpha/dev/bus_dma.c +++ b/sys/arch/alpha/dev/bus_dma.c @@ -1,4 +1,4 @@ -/* $OpenBSD: bus_dma.c,v 1.17 2006/04/13 14:41:08 brad Exp $ */ +/* $OpenBSD: bus_dma.c,v 1.18 2006/05/12 20:48:19 brad Exp $ */ /* $NetBSD: bus_dma.c,v 1.40 2000/07/17 04:47:56 thorpej Exp $ */ /*- @@ -106,6 +106,7 @@ _bus_dmamap_create(t, size, nsegments, maxsegsz, boundary, flags, dmamp) map->_dm_flags = flags & ~(BUS_DMA_WAITOK|BUS_DMA_NOWAIT); map->dm_mapsize = 0; /* no valid mappings */ map->dm_nsegs = 0; + map->_dm_window = NULL; *dmamp = map; return (0); @@ -268,6 +269,7 @@ _bus_dmamap_load_direct(t, map, buf, buflen, p, flags) if (error == 0) { map->dm_mapsize = buflen; map->dm_nsegs = seg + 1; + map->_dm_window = t; } else if (t->_next_window != NULL) { /* * Give the next window a chance. @@ -319,6 +321,7 @@ _bus_dmamap_load_mbuf_direct(t, map, m0, flags) if (error == 0) { map->dm_mapsize = m0->m_pkthdr.len; map->dm_nsegs = seg + 1; + map->_dm_window = t; } else if (t->_next_window != NULL) { /* * Give the next window a chance. @@ -382,6 +385,7 @@ _bus_dmamap_load_uio_direct(t, map, uio, flags) if (error == 0) { map->dm_mapsize = uio->uio_resid; map->dm_nsegs = seg + 1; + map->_dm_window = t; } else if (t->_next_window != NULL) { /* * Give the next window a chance. @@ -423,6 +427,7 @@ _bus_dmamap_unload(t, map) */ map->dm_mapsize = 0; map->dm_nsegs = 0; + map->_dm_window = NULL; } /* diff --git a/sys/arch/alpha/dev/sgmap_typedep.c b/sys/arch/alpha/dev/sgmap_typedep.c index e5164260582..af24d7340a0 100644 --- a/sys/arch/alpha/dev/sgmap_typedep.c +++ b/sys/arch/alpha/dev/sgmap_typedep.c @@ -1,4 +1,4 @@ -/* $OpenBSD: sgmap_typedep.c,v 1.7 2006/04/13 14:41:08 brad Exp $ */ +/* $OpenBSD: sgmap_typedep.c,v 1.8 2006/05/12 20:48:19 brad Exp $ */ /* $NetBSD: sgmap_typedep.c,v 1.17 2001/07/19 04:27:37 thorpej Exp $ */ /*- @@ -216,6 +216,7 @@ __C(SGMAP_TYPE,_load)(bus_dma_tag_t t, bus_dmamap_t map, void *buf, if (error == 0) { map->dm_mapsize = buflen; map->dm_nsegs = 1; + map->_dm_window = t; } else if (t->_next_window != NULL) { /* Give the next window a chance. */ error = bus_dmamap_load(t->_next_window, map, buf, buflen, @@ -265,6 +266,7 @@ __C(SGMAP_TYPE,_load_mbuf)(bus_dma_tag_t t, bus_dmamap_t map, if (error == 0) { map->dm_mapsize = m0->m_pkthdr.len; map->dm_nsegs = seg; + map->_dm_window = t; } else { /* Need to back out what we've done so far. */ map->dm_nsegs = seg - 1; @@ -342,4 +344,5 @@ __C(SGMAP_TYPE,_unload)(bus_dma_tag_t t, bus_dmamap_t map, /* Mark the mapping invalid. */ map->dm_mapsize = 0; map->dm_nsegs = 0; + map->_dm_window = NULL; } diff --git a/sys/arch/alpha/include/bus.h b/sys/arch/alpha/include/bus.h index e42d3037850..adb8c1421fc 100644 --- a/sys/arch/alpha/include/bus.h +++ b/sys/arch/alpha/include/bus.h @@ -1,4 +1,4 @@ -/* $OpenBSD: bus.h,v 1.23 2006/04/27 15:17:07 mickey Exp $ */ +/* $OpenBSD: bus.h,v 1.24 2006/05/12 20:48:19 brad Exp $ */ /* $NetBSD: bus.h,v 1.10 1996/12/02 22:19:32 cgd Exp $ */ /* @@ -594,9 +594,11 @@ struct alpha_bus_dma_tag { #define bus_dmamap_load_raw(t, m, sg, n, s, f) \ (*(t)->_dmamap_load_raw)((t), (m), (sg), (n), (s), (f)) #define bus_dmamap_unload(t, p) \ - (*(t)->_dmamap_unload)((t), (p)) + (void)(t), \ + (*(p)->_dm_window->_dmamap_unload)((p)->_dm_window, (p)) #define bus_dmamap_sync(t, p, a, s, op) \ - (*(t)->_dmamap_sync)((t), (p), (a), (s), (op)) + (void)(t), \ + (*(p)->_dm_window->_dmamap_sync)((p)->_dm_window, (p), (a), (s), (op)) #define bus_dmamem_alloc(t, s, a, b, sg, n, r, f) \ (*(t)->_dmamem_alloc)((t), (s), (a), (b), (sg), (n), (r), (f)) #define bus_dmamem_free(t, sg, n) \ @@ -628,6 +630,11 @@ struct alpha_bus_dmamap { */ void *_dm_cookie; + /* + * The DMA window that we ended up being mapped in. + */ + bus_dma_tag_t _dm_window; + /* * PUBLIC MEMBERS: these are used by machine-independent code. */ diff --git a/sys/arch/alpha/isa/isadma_bounce.c b/sys/arch/alpha/isa/isadma_bounce.c index e8daf4c18f5..508583cfa6c 100644 --- a/sys/arch/alpha/isa/isadma_bounce.c +++ b/sys/arch/alpha/isa/isadma_bounce.c @@ -1,4 +1,4 @@ -/* $OpenBSD: isadma_bounce.c,v 1.5 2002/06/25 21:33:21 miod Exp $ */ +/* $OpenBSD: isadma_bounce.c,v 1.6 2006/05/12 20:48:19 brad Exp $ */ /* $NetBSD: isadma_bounce.c,v 1.3 2000/06/29 09:02:57 mrg Exp $ */ /*- @@ -262,6 +262,7 @@ isadma_bounce_dmamap_load(bus_dma_tag_t t, bus_dmamap_t map, void *buf, /* ...so isadma_bounce_dmamap_sync() knows we're bouncing */ cookie->id_flags |= ID_IS_BOUNCING; + map->_dm_window = t; return (0); } @@ -333,6 +334,7 @@ isadma_bounce_dmamap_load_mbuf(bus_dma_tag_t t, bus_dmamap_t map, /* ...so isadma_bounce_dmamap_sync() knows we're bouncing */ cookie->id_flags |= ID_IS_BOUNCING; + map->_dm_window = t; return (0); } -- cgit v1.2.3