Module Name: src
Committed By: macallan
Date: Tue Jan 8 19:03:16 UTC 2013
Modified Files:
src/sys/arch/arm/omap: omap2_obio.c omap2_reg.h
Added Files:
src/sys/arch/arm/omap: omapdma.c omapdmareg.h omapdmavar.h
Log Message:
add a simple driver for OMAP3's built-in DMA controller
To generate a diff of this commit:
cvs rdiff -u -r1.18 -r1.19 src/sys/arch/arm/omap/omap2_obio.c
cvs rdiff -u -r1.15 -r1.16 src/sys/arch/arm/omap/omap2_reg.h
cvs rdiff -u -r0 -r1.1 src/sys/arch/arm/omap/omapdma.c \
src/sys/arch/arm/omap/omapdmareg.h src/sys/arch/arm/omap/omapdmavar.h
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/arch/arm/omap/omap2_obio.c
diff -u src/sys/arch/arm/omap/omap2_obio.c:1.18 src/sys/arch/arm/omap/omap2_obio.c:1.19
--- src/sys/arch/arm/omap/omap2_obio.c:1.18 Mon Dec 24 06:28:55 2012
+++ src/sys/arch/arm/omap/omap2_obio.c Tue Jan 8 19:03:16 2013
@@ -1,7 +1,7 @@
-/* $Id: omap2_obio.c,v 1.18 2012/12/24 06:28:55 kiyohara Exp $ */
+/* $Id: omap2_obio.c,v 1.19 2013/01/08 19:03:16 macallan Exp $ */
/* adapted from: */
-/* $NetBSD: omap2_obio.c,v 1.18 2012/12/24 06:28:55 kiyohara Exp $ */
+/* $NetBSD: omap2_obio.c,v 1.19 2013/01/08 19:03:16 macallan Exp $ */
/*
@@ -103,7 +103,7 @@
#include "opt_omap.h"
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: omap2_obio.c,v 1.18 2012/12/24 06:28:55 kiyohara Exp $");
+__KERNEL_RCSID(0, "$NetBSD: omap2_obio.c,v 1.19 2013/01/08 19:03:16 macallan Exp $");
#include "locators.h"
#include "obio.h"
@@ -364,7 +364,7 @@ static const struct {
{ .name = "avic", .addr = INTC_BASE_3430, .required = true },
#endif
#if defined(OMAP_3530)
- { .name = "avic", .addr = INTC_BASE_3530, .required = true },
+ { .name = "avic", .addr = INTC_BASE_3530, .required = true },
#endif
{ .name = "gpio1", .addr = GPIO1_BASE, .required = false },
{ .name = "gpio2", .addr = GPIO2_BASE, .required = false },
@@ -385,6 +385,9 @@ static const struct {
{ .name = "omapicu", .addr = 0x48200000, .required = true },
{ .name = "prcm", .addr = 0x44e00000, .required = true },
#endif
+#if defined(OMAP_3530)
+ { .name = "omapdma", .addr = OMAP3530_SDMA_BASE, .required = true },
+#endif
};
static void
Index: src/sys/arch/arm/omap/omap2_reg.h
diff -u src/sys/arch/arm/omap/omap2_reg.h:1.15 src/sys/arch/arm/omap/omap2_reg.h:1.16
--- src/sys/arch/arm/omap/omap2_reg.h:1.15 Thu Dec 13 01:15:50 2012
+++ src/sys/arch/arm/omap/omap2_reg.h Tue Jan 8 19:03:16 2013
@@ -1,4 +1,4 @@
-/* $NetBSD: omap2_reg.h,v 1.15 2012/12/13 01:15:50 matt Exp $ */
+/* $NetBSD: omap2_reg.h,v 1.16 2013/01/08 19:03:16 macallan Exp $ */
/*
* Copyright (c) 2007 Microsoft
@@ -143,7 +143,8 @@
#define OMAP2_CM_ICLKEN1_CORE 0x210
#define OMAP2_CM_ICLKEN2_CORE 0x214
#define OMAP2_CM_CLKSEL2_CORE 0x244
-#define OMAP2_CM_SIZE (OMAP2_CM_CLKSEL2_CORE + 4)
+#define OMAP3_CM_IDLEST1_CORE 0xa20
+#define OMAP2_CM_SIZE (0x1000)
/*
* bit defines for OMAP2_CM_CLKSEL_MPU
@@ -729,4 +730,10 @@
#define OMAP3530_SDRC_BASE 0x6d000000
#define OMAP3530_SDRC_SIZE 0x00010000 /* 16KB */
+/*
+ * DMA
+ */
+#define OMAP3530_SDMA_BASE 0x48056000
+#define OMAP3530_SDMA_SIZE 0x00001000 /* 4KB */
+
#endif /* _ARM_OMAP_OMAP2_REG_H_ */
Added files:
Index: src/sys/arch/arm/omap/omapdma.c
diff -u /dev/null src/sys/arch/arm/omap/omapdma.c:1.1
--- /dev/null Tue Jan 8 19:03:16 2013
+++ src/sys/arch/arm/omap/omapdma.c Tue Jan 8 19:03:16 2013
@@ -0,0 +1,157 @@
+/* $NetBSD: omapdma.c,v 1.1 2013/01/08 19:03:16 macallan Exp $ */
+
+/*
+ * Copyright (c) 2012 Michael Lorenz
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/*
+ * OMAP 3530 DMA controller
+ */
+
+#include <sys/cdefs.h>
+__KERNEL_RCSID(0, "$NetBSD: omapdma.c,v 1.1 2013/01/08 19:03:16 macallan Exp $");
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/kernel.h>
+#include <sys/device.h>
+#include <sys/malloc.h>
+#include <sys/lwp.h>
+#include <sys/kauth.h>
+
+#include <sys/bus.h>
+#include <arm/omap/omapdmareg.h>
+#include <arm/omap/omapdmavar.h>
+#include <arm/omap/omap2_obiovar.h>
+#include <arm/omap/omap2_obioreg.h>
+#include <arm/omap/omap2_prcm.h>
+
+struct omapdma_softc {
+ device_t sc_dev;
+
+ bus_space_tag_t sc_iot;
+ bus_space_handle_t sc_regh;
+};
+
+static int omapdma_match(device_t, cfdata_t, void *);
+static void omapdma_attach(device_t, device_t, void *);
+
+CFATTACH_DECL_NEW(omapdma, sizeof(struct omapdma_softc),
+ omapdma_match, omapdma_attach, NULL, NULL);
+
+struct omapdma_softc *omapdma_sc = NULL;
+
+static int
+omapdma_match(device_t parent, cfdata_t match, void *aux)
+{
+ struct obio_attach_args *obio = aux;
+
+ if ((obio->obio_addr == -1) || (obio->obio_size == 0))
+ return 0;
+ return 1;
+}
+
+static void
+omapdma_attach(device_t parent, device_t self, void *aux)
+{
+ struct omapdma_softc *sc = device_private(self);
+ struct obio_attach_args *obio = aux;
+ uint32_t reg;
+
+ sc->sc_iot = obio->obio_iot;
+ sc->sc_dev = self;
+
+ printf(": OMAP DMA controller rev ");
+ if (bus_space_map(obio->obio_iot, obio->obio_addr, obio->obio_size, 0,
+ &sc->sc_regh)) {
+ aprint_error_dev(sc->sc_dev, ": couldn't map register space\n");
+ return;
+ }
+ reg = bus_space_read_4(sc->sc_iot, sc->sc_regh, OMAPDMA_REVISION);
+ printf("%d.%d\n", (reg >> 4) & 0xf, reg & 0xf);
+
+ /* disable & clear all interrupts etc. */
+ bus_space_write_4(sc->sc_iot, sc->sc_regh, OMAPDMA_IRQENABLE_L0, 0);
+ bus_space_write_4(sc->sc_iot, sc->sc_regh, OMAPDMA_IRQENABLE_L1, 0);
+ bus_space_write_4(sc->sc_iot, sc->sc_regh, OMAPDMA_IRQENABLE_L2, 0);
+ bus_space_write_4(sc->sc_iot, sc->sc_regh, OMAPDMA_IRQENABLE_L3, 0);
+ bus_space_write_4(sc->sc_iot, sc->sc_regh,
+ OMAPDMA_IRQSTATUS_L0, 0xffffffff);
+ bus_space_write_4(sc->sc_iot, sc->sc_regh,
+ OMAPDMA_IRQSTATUS_L1, 0xffffffff);
+ bus_space_write_4(sc->sc_iot, sc->sc_regh,
+ OMAPDMA_IRQSTATUS_L2, 0xffffffff);
+ bus_space_write_4(sc->sc_iot, sc->sc_regh,
+ OMAPDMA_IRQSTATUS_L3, 0xffffffff);
+
+ bus_space_write_4(sc->sc_iot, sc->sc_regh, OMAPDMA_SYSCONFIG,
+ OMAPDMA_IDLEMODE_NO_STANDBY | OMAPDMA_SMART_IDLE |
+ OMAPDMA_AUTOIDLE);
+
+ omapdma_sc = sc;
+
+ /*
+ * TODO:
+ * - channel allocation
+ */
+}
+
+void
+omapdma_write_reg(int reg, uint32_t val)
+{
+ if (omapdma_sc != NULL) {
+ bus_space_write_4(omapdma_sc->sc_iot, omapdma_sc->sc_regh,
+ reg, val);
+ }
+}
+
+uint32_t
+omapdma_read_reg(int reg)
+{
+ if (omapdma_sc != NULL) {
+ return bus_space_read_4(omapdma_sc->sc_iot,
+ omapdma_sc->sc_regh, reg);
+ }
+ return 0;
+}
+
+void
+omapdma_write_ch_reg(int ch, int reg, uint32_t val)
+{
+ if (omapdma_sc != NULL) {
+ bus_space_write_4(omapdma_sc->sc_iot, omapdma_sc->sc_regh,
+ OMAPDMA_CHANNEL_BASE + 0x60 * ch + reg, val);
+ }
+}
+
+uint32_t
+omapdma_read_ch_reg(int ch, int reg)
+{
+ if (omapdma_sc != NULL) {
+ return bus_space_read_4(omapdma_sc->sc_iot,
+ omapdma_sc->sc_regh,
+ OMAPDMA_CHANNEL_BASE + 0x60 * ch + reg);
+ }
+ return 0;
+}
Index: src/sys/arch/arm/omap/omapdmareg.h
diff -u /dev/null src/sys/arch/arm/omap/omapdmareg.h:1.1
--- /dev/null Tue Jan 8 19:03:16 2013
+++ src/sys/arch/arm/omap/omapdmareg.h Tue Jan 8 19:03:16 2013
@@ -0,0 +1,176 @@
+/* $NetBSD: omapdmareg.h,v 1.1 2013/01/08 19:03:16 macallan Exp $ */
+
+/*
+ * Copyright (c) 2012 Michael Lorenz
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__KERNEL_RCSID(0, "$NetBSD: omapdmareg.h,v 1.1 2013/01/08 19:03:16 macallan Exp $");
+
+#ifndef OMAPDMA_REG_H
+#define OMAPDMA_REG_H
+
+/*
+ * all register offsets are relative to OMAP3530_SDMA_BASE
+ */
+
+#define OMAPDMA_REVISION 0x00000000
+
+/* each bit corresponds to a DMA channel, write 1 to clear */
+#define OMAPDMA_IRQSTATUS_L0 0x00000008
+#define OMAPDMA_IRQSTATUS_L1 0x0000000c
+#define OMAPDMA_IRQSTATUS_L2 0x00000010
+#define OMAPDMA_IRQSTATUS_L3 0x00000014
+
+#define OMAPDMA_IRQENABLE_L0 0x00000018
+#define OMAPDMA_IRQENABLE_L1 0x0000001c
+#define OMAPDMA_IRQENABLE_L2 0x00000020
+#define OMAPDMA_IRQENABLE_L3 0x00000024
+
+#define OMAPDMA_SYSSTATUS 0x00000028
+ #define OMAPDMA_RESET_DONE 0x00000001
+
+#define OMAPDMA_SYSCONFIG 0x0000002c
+ #define OMAPDMA_IDLEMODE_MASK 0x00003000
+ #define OMAPDMA_IDLEMODE_FORCE_STANDBY 0x00000000
+ #define OMAPDMA_IDLEMODE_NO_STANDBY 0x00001000
+ #define OMAPDMA_IDLEMODE_SMART_STANDBY 0x00002000
+ #define OMAPDMA_CLKACT_MASK 0x00000300
+ #define OMAPDMA_EMUFREE 0x00000020
+ #define OMAPDMA_SIDLEMODE_MASK 0x00000018
+ #define OMAPDMA_FORCE_IDLE 0x00000000
+ #define OMAPDMA_NO_IDLE 0x00000008
+ #define OMAPDMA_SMART_IDLE 0x00000010
+ #define OMAPDMA_SOFTRESET 0x00000002
+ #define OMAPDMA_AUTOIDLE 0x00000001
+
+/* capability registers */
+#define OMAPDMA_CAPS_0 0x00000064
+ #define OMAPDMA_CAP_FILL 0x00080000 /* fill support */
+ #define OMAPDMA_CAP_TRANS_BLT 0x00040000 /* transparent blit */
+#define OMAPDMA_CAPS_2 0x0000006c
+#define OMAPDMA_CAPS_3 0x00000070
+#define OMAPDMA_CAPS_4 0x00000074
+#define OMAPDMA_GCR 0x00000078
+
+/*
+ * there are 32 channels, each occupies a 0x60 register space starting at
+ * 0x00000080 + 0x60 * c for c = 0 .. 31
+ */
+#define OMAPDMA_CHANNEL_BASE 0x00000080
+
+#define OMAPDMAC_CCR 0x00000000
+ #define CCR_WRITE_PRIORITY 0x04000000
+ #define CCR_BUFFERING_DISABLE 0x02000000
+ #define CCR_SEL_SRC_DST_SYNC 0x01000000
+ #define CCR_PREFETCH 0x00800000
+ #define CCR_SUPERVISOR 0x00400000
+ #define CCR_SUNC_CONTROL_UPPER_MASK 0x00180000
+ #define CCR_BLOCK_SYNC 0x00040000
+ #define CCR_TRANSPARENT_COPY_ENABLE 0x00020000
+ #define CCR_CONST_FILL_ENABLE 0x00010000
+ #define CCR_DST_AMODE_MASK 0x0000c000
+ #define CCR_DST_AMODE_CONST_ADDR 0x00000000
+ #define CCR_DST_AMODE_POST_INCR 0x00004000
+ #define CCR_DST_AMODE_SINGLE_INDEX 0x00008000
+ #define CCR_DST_AMODE_DOUBLE_INDEX 0x0000c000
+ #define CCR_SRC_AMODE_MASK 0x00003000
+ #define CCR_SRC_AMODE_CONST_ADDR 0x00000000
+ #define CCR_SRC_AMODE_POST_INCR 0x00001000
+ #define CCR_SRC_AMODE_SINGLE_INDEX 0x00002000
+ #define CCR_SRC_AMODE_DOUBLE_INDEX 0x00003000
+ #define CCR_WR_ACTIVE 0x00000400
+ #define CCR_RD_ACTIVE 0x00000200
+ #define CCR_SUSPEND_SENSITIVE 0x00000100
+ #define CCR_ENABLE 0x00000080
+ #define CCR_READ_PRIORITY 0x00000040
+ #define CCR_FRAME_SYNC 0x00000020
+ #define CCR_SYNCHRO_CONTROL_MASK 0x0000001f
+#define OMAPDMAC_CLNK_CTRL 0x00000004
+ #define CLNK_ENABLE_LNK 0x00008000
+ #define CLNK_NEXT_CHANNEL_MASK 0x0000001f
+#define OMAPDMAC_CICRI 0x00000008
+ #define CICRI_DRAIN_IE 0x00001000
+ #define CICRI_MISALIGNED_ERR_IE 0x00000800
+ #define CICRI_SUPERVISOR_ERR_IE 0x00000400
+ #define CICRI_TRANSFER_ERR_IE 0x00000100
+ #define CICRI_PKT_IE 0x00000080
+ #define CICRI_BLOCK_IE 0x00000020
+ #define CICRI_LAST_IE 0x00000010
+ #define CICRI_FRAME_IE 0x00000008
+ #define CICRI_HALF_IE 0x00000004
+ #define CICRI_DROP_IE 0x00000002
+#define OMAPDMAC_CSR 0x0000000c
+ #define CSR_DRAIN_END 0x00001000
+ #define CSR_MISALIGNED_ADRS_ERR 0x00000800
+ #define CSR_SUPERVISOR_ERR 0x00000400
+ #define CSR_TRANS_ERR 0x00000100
+ #define CSR_PKT 0x00000080
+ #define CSR_SYNC 0x00000040
+ #define CSR_BLOCK 0x00000020
+ #define CSR_LAST 0x00000010
+ #define CSR_FRAME 0x00000008
+ #define CSR_HALF 0x00000004
+ #define CSR_DROP 0x00000002
+#define OMAPDMAC_CSDPI 0x00000010
+ #define CSDPI_SRC_ENDIAN 0x00100000
+ #define CSDPI_SRC_ENDIAN_LOCK 0x00080000
+ #define CSDPI_DST_ENDIAN 0x00040000
+ #define CSDPI_DST_ENDIAN_LOCK 0x00020000
+ #define CSDPI_WRITE_MODE_MASK 0x00018000
+ #define CSDPI_WRITE_NONPOSTED 0x00000000
+ #define CSDPI_WRITE_POSTED 0x00008000
+ #define CSDPI_WRITE_EXCEPT_LAST 0x00010000
+ #define CSDPI_DST_BURST_MASK 0x0000c000
+ #define CSDPI_DST_BURST_SINGLE 0x00000000
+ #define CSDPI_DST_BURST_16 0x00004000
+ #define CSDPI_DST_BURST_32 0x00008000
+ #define CSDPI_DST_BURST_64 0x0000c000
+ #define CSDPI_DST_PACKED 0x00002000
+ #define CSDPI_SCR_BURST_MASK 0x00000180
+ #define CSDPI_SCR_BURST_SINGLE 0x00000000
+ #define CSDPI_SCR_BURST_16 0x00000080
+ #define CSDPI_SCR_BURST_32 0x00000100
+ #define CSDPI_SCR_BURST_64 0x00000180
+ #define CSDPI_SCR_PACKED 0x00000040
+ #define CSDPI_DATA_TYPE_MASK 0x00000003
+ #define CSDPI_DATA_TYPE_8 0x00000000
+ #define CSDPI_DATA_TYPE_16 0x00000001
+ #define CSDPI_DATA_TYPE_32 0x00000002
+#define OMAPDMAC_CEN 0x00000014
+#define OMAPDMAC_CFN 0x00000018
+#define OMAPDMAC_CSSA 0x0000001c
+#define OMAPDMAC_CDSA 0x00000020
+#define OMAPDMAC_CSEI 0x00000024
+#define OMAPDMAC_CSFI 0x00000028
+#define OMAPDMAC_CDEI 0x0000002c
+#define OMAPDMAC_CDFI 0x00000030
+#define OMAPDMAC_CSAC 0x00000034
+#define OMAPDMAC_CDAC 0x00000038
+#define OMAPDMAC_CCEN 0x0000003c
+#define OMAPDMAC_CCFN 0x00000040
+#define OMAPDMAC_COLOR 0x00000044
+
+#endif /* OMAPDMA_REG_H */
Index: src/sys/arch/arm/omap/omapdmavar.h
diff -u /dev/null src/sys/arch/arm/omap/omapdmavar.h:1.1
--- /dev/null Tue Jan 8 19:03:16 2013
+++ src/sys/arch/arm/omap/omapdmavar.h Tue Jan 8 19:03:16 2013
@@ -0,0 +1,41 @@
+/* $NetBSD: omapdmavar.h,v 1.1 2013/01/08 19:03:16 macallan Exp $ */
+
+/*
+ * Copyright (c) 2012 Michael Lorenz
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__KERNEL_RCSID(0, "$NetBSD: omapdmavar.h,v 1.1 2013/01/08 19:03:16 macallan Exp $");
+
+#ifndef OMAPDMA_VAR_H
+#define OMAPDMA_VAR_H
+
+void omapdma_write_reg(int, uint32_t);
+uint32_t omapdma_read_reg(int);
+void omapdma_write_ch_reg(int, int, uint32_t);
+uint32_t omapdma_read_ch_reg(int, int);
+
+
+#endif /* OMAPDMA_VAR_H */
\ No newline at end of file
