[src/trunk]: src/sys/arch/arm/broadcom Add a bounce dmatag which only has the...

[matt <matt%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/960915cc3028
branches:  trunk
changeset: 785027:960915cc3028
user:      matt <matt%NetBSD.org@localhost>
date:      Tue Feb 19 02:15:17 2013 +0000

description:
Add a bounce dmatag which only has the coherent memory region.
The coherent dmatag now always has all of memory (both coherent and normal
memory).

diffstat:

 sys/arch/arm/broadcom/bcm53xx_board.c |  33 ++++++++++++++++++++++++++++-----
 sys/arch/arm/broadcom/bcm53xx_pax.c   |   9 +++++----
 sys/arch/arm/broadcom/bcm53xx_var.h   |   5 ++++-
 3 files changed, 37 insertions(+), 10 deletions(-)

diffs (130 lines):

diff -r f96e4792b5ea -r 960915cc3028 sys/arch/arm/broadcom/bcm53xx_board.c
--- a/sys/arch/arm/broadcom/bcm53xx_board.c     Tue Feb 19 02:04:24 2013 +0000
+++ b/sys/arch/arm/broadcom/bcm53xx_board.c     Tue Feb 19 02:15:17 2013 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: bcm53xx_board.c,v 1.13 2013/02/13 23:09:39 matt Exp $  */
+/*     $NetBSD: bcm53xx_board.c,v 1.14 2013/02/19 02:15:17 matt Exp $  */
 /*-
  * Copyright (c) 2012 The NetBSD Foundation, Inc.
  * All rights reserved.
@@ -34,7 +34,7 @@
 
 #include <sys/cdefs.h>
 
-__KERNEL_RCSID(1, "$NetBSD: bcm53xx_board.c,v 1.13 2013/02/13 23:09:39 matt Exp $");
+__KERNEL_RCSID(1, "$NetBSD: bcm53xx_board.c,v 1.14 2013/02/19 02:15:17 matt Exp $");
 
 #include <sys/param.h>
 #include <sys/bus.h>
@@ -91,11 +91,9 @@
                .dr_busbase = 0x80000000,
                .dr_len = 0x10000000,
                .dr_flags = _BUS_DMAMAP_COHERENT,
-#ifndef _ARM32_NEED_BUS_DMA_BOUNCE
        }, [1] = {
                .dr_sysbase = 0x90000000,
                .dr_busbase = 0x90000000,
-#endif
        },
 };
 
@@ -107,6 +105,25 @@
        _BUS_DMATAG_FUNCS,
 };
 
+#ifdef _ARM32_NEED_BUS_DMA_BOUNCE
+struct arm32_dma_range bcm53xx_bounce_dma_ranges[] = {
+       [0] = {
+               .dr_sysbase = 0x80000000,
+               .dr_busbase = 0x80000000,
+               .dr_len = 0x10000000,
+               .dr_flags = _BUS_DMAMAP_COHERENT,
+       },
+};
+
+struct arm32_bus_dma_tag bcm53xx_bounce_dma_tag = {
+       ._ranges = bcm53xx_bounce_dma_ranges,
+       ._nranges = __arraycount(bcm53xx_bounce_dma_ranges),
+       _BUS_DMAMAP_FUNCS,
+       _BUS_DMAMEM_FUNCS,
+       _BUS_DMATAG_FUNCS,
+};
+#endif
+
 #ifdef BCM53XX_CONSOLE_EARLY
 #include <dev/ic/ns16550reg.h>
 #include <dev/ic/comreg.h>
@@ -529,6 +546,8 @@
                bcm53xx_dma_tag._nranges = 1;
 #ifndef _ARM32_NEED_BUS_DMA_BOUNCE
                bcm53xx_coherent_dma_tag._nranges = 1;
+#else
+               bcm53xx_bounce_dma_ranges[0].dr_len = memsize;
 #endif
        } else {
                /*
@@ -537,12 +556,16 @@
                 * below 256MB which for PCI and GMAC are coherent.
                 */
                bcm53xx_dma_ranges[1].dr_len = memsize - 0x10000000;
-#ifndef _ARM32_NEED_BUS_DMA_BOUNCE
                bcm53xx_coherent_dma_ranges[1].dr_len = memsize - 0x10000000;
+#ifdef _ARM32_NEED_BUS_DMA_BOUNCE
+               bcm53xx_bounce_dma_ranges[1].dr_len = memsize - 0x10000000;
 #endif
        }
        KASSERT(bcm53xx_dma_tag._ranges[0].dr_flags == 0);
        KASSERT(bcm53xx_coherent_dma_tag._ranges[0].dr_flags == _BUS_DMAMAP_COHERENT);
+#ifdef _ARM32_NEED_BUS_DMA_BOUNCE
+       KASSERT(bcm53xx_bounce_dma_tag._ranges[0].dr_flags == _BUS_DMAMAP_COHERENT);
+#endif
 }
 
 #ifdef MULTIPROCESSOR
diff -r f96e4792b5ea -r 960915cc3028 sys/arch/arm/broadcom/bcm53xx_pax.c
--- a/sys/arch/arm/broadcom/bcm53xx_pax.c       Tue Feb 19 02:04:24 2013 +0000
+++ b/sys/arch/arm/broadcom/bcm53xx_pax.c       Tue Feb 19 02:15:17 2013 +0000
@@ -34,7 +34,7 @@
 
 #include <sys/cdefs.h>
 
-__KERNEL_RCSID(1, "$NetBSD: bcm53xx_pax.c,v 1.8 2013/02/19 02:03:06 matt Exp $");
+__KERNEL_RCSID(1, "$NetBSD: bcm53xx_pax.c,v 1.9 2013/02/19 02:15:18 matt Exp $");
 
 #include <sys/bus.h>
 #include <sys/device.h>
@@ -202,11 +202,12 @@
        cfdata_t cf = device_cfdata(self);
 
        sc->sc_dev = self;
+       sc->sc_dmat = &bcm53xx_coherent_dma_tag;
+#ifdef _ARM32_NEED_BUS_DMA_BOUNCE
        if (cf->cf_flags & 2) {
-               sc->sc_dmat = &bcm53xx_coherent_dma_tag;
-       } else {
-               sc->sc_dmat = ccbaa->ccbaa_dmat;
+               sc->sc_dmat = &bcm53xx_bounce_dma_tag;
        }
+#endif
 
        for (u_int i = 0; i < 4; i++) {
                snprintf(sc->sc_intrstring[i], sizeof(sc->sc_intrstring[i]),
diff -r f96e4792b5ea -r 960915cc3028 sys/arch/arm/broadcom/bcm53xx_var.h
--- a/sys/arch/arm/broadcom/bcm53xx_var.h       Tue Feb 19 02:04:24 2013 +0000
+++ b/sys/arch/arm/broadcom/bcm53xx_var.h       Tue Feb 19 02:15:17 2013 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: bcm53xx_var.h,v 1.4 2012/10/17 20:18:55 matt Exp $     */
+/*     $NetBSD: bcm53xx_var.h,v 1.5 2013/02/19 02:15:18 matt Exp $     */
 /*-
  * Copyright (c) 2012 The NetBSD Foundation, Inc.
  * All rights reserved.
@@ -115,6 +115,9 @@
 void   bcm53xx_srab_write_4(u_int, uint32_t);
 void   bcm53xx_srab_write_8(u_int, uint64_t);
 extern struct arm32_bus_dma_tag bcm53xx_dma_tag, bcm53xx_coherent_dma_tag;
+#ifdef _ARM32_NEED_BUS_DMA_BOUNCE
+extern struct arm32_bus_dma_tag bcm53xx_bounce_dma_tag;
+#endif
 extern struct bus_space bcmgen_bs_tag;
 extern bus_space_tag_t bcm53xx_ioreg_bst;
 extern bus_space_handle_t bcm53xx_ioreg_bsh;