1 files changed, 55 insertions, 0 deletions

diff --git a/include/asm-arm/mach/dma.h b/include/asm-arm/mach/dma.h
new file mode 100644
index 000000000000..31bf716106ee
--- /dev/null
+++ b/include/asm-arm/mach/dma.h
@@ -0,0 +1,55 @@
+/*
+ *  linux/include/asm-arm/mach/dma.h
+ *
+ *  Copyright (C) 1998-2000 Russell King
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ *  This header file describes the interface between the generic DMA handler
+ *  (dma.c) and the architecture-specific DMA backends (dma-*.c)
+ */
+
+struct dma_struct;
+typedef struct dma_struct dma_t;
+
+struct dma_ops {
+        int     (*request)(dmach_t, dma_t *);           /* optional */
+        void    (*free)(dmach_t, dma_t *);              /* optional */
+        void    (*enable)(dmach_t, dma_t *);            /* mandatory */
+        void    (*disable)(dmach_t, dma_t *);           /* mandatory */
+        int     (*residue)(dmach_t, dma_t *);           /* optional */
+        int     (*setspeed)(dmach_t, dma_t *, int);     /* optional */
+        char    *type;
+};
+
+struct dma_struct {
+        struct scatterlist buf;         /* single DMA                   */
+        int             sgcount;        /* number of DMA SG             */
+        struct scatterlist *sg;         /* DMA Scatter-Gather List      */
+
+        unsigned int    active:1;       /* Transfer active              */
+        unsigned int    invalid:1;      /* Address/Count changed        */
+        unsigned int    using_sg:1;     /* using scatter list?          */
+        dmamode_t       dma_mode;       /* DMA mode                     */
+        int             speed;          /* DMA speed                    */
+
+        unsigned int    lock;           /* Device is allocated          */
+        const char      *device_id;     /* Device name                  */
+
+        unsigned int    dma_base;       /* Controller base address      */
+        int             dma_irq;        /* Controller IRQ               */
+        struct scatterlist cur_sg;      /* Current controller buffer    */
+        unsigned int    state;
+
+        struct dma_ops  *d_ops;
+};
+
+/* Prototype: void arch_dma_init(dma)
+ * Purpose  : Initialise architecture specific DMA
+ * Params   : dma - pointer to array of DMA structures
+ */
+extern void arch_dma_init(dma_t *dma);
+
+extern void isa_init_dma(dma_t *dma);