summaryrefslogtreecommitdiff
path: root/arch/sh/include/asm/dma-sh.h
diff options
context:
space:
mode:
Diffstat (limited to 'arch/sh/include/asm/dma-sh.h')
-rw-r--r--arch/sh/include/asm/dma-sh.h118
1 files changed, 118 insertions, 0 deletions
diff --git a/arch/sh/include/asm/dma-sh.h b/arch/sh/include/asm/dma-sh.h
new file mode 100644
index 000000000000..0c8f8e14622a
--- /dev/null
+++ b/arch/sh/include/asm/dma-sh.h
@@ -0,0 +1,118 @@
+/*
+ * arch/sh/include/asm/dma-sh.h
+ *
+ * Copyright (C) 2000 Takashi YOSHII
+ * Copyright (C) 2003 Paul Mundt
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+#ifndef __DMA_SH_H
+#define __DMA_SH_H
+
+#include <asm/dma.h>
+#include <cpu/dma.h>
+
+/* DMAOR contorl: The DMAOR access size is different by CPU.*/
+#if defined(CONFIG_CPU_SUBTYPE_SH7723) || \
+ defined(CONFIG_CPU_SUBTYPE_SH7780) || \
+ defined(CONFIG_CPU_SUBTYPE_SH7785)
+#define dmaor_read_reg(n) \
+ (n ? ctrl_inw(SH_DMAC_BASE1 + DMAOR) \
+ : ctrl_inw(SH_DMAC_BASE0 + DMAOR))
+#define dmaor_write_reg(n, data) \
+ (n ? ctrl_outw(data, SH_DMAC_BASE1 + DMAOR) \
+ : ctrl_outw(data, SH_DMAC_BASE0 + DMAOR))
+#else /* Other CPU */
+#define dmaor_read_reg(n) ctrl_inw(SH_DMAC_BASE0 + DMAOR)
+#define dmaor_write_reg(n, data) ctrl_outw(data, SH_DMAC_BASE0 + DMAOR)
+#endif
+
+static int dmte_irq_map[] __maybe_unused = {
+#if (MAX_DMA_CHANNELS >= 4)
+ DMTE0_IRQ,
+ DMTE0_IRQ + 1,
+ DMTE0_IRQ + 2,
+ DMTE0_IRQ + 3,
+#endif
+#if (MAX_DMA_CHANNELS >= 6)
+ DMTE4_IRQ,
+ DMTE4_IRQ + 1,
+#endif
+#if (MAX_DMA_CHANNELS >= 8)
+ DMTE6_IRQ,
+ DMTE6_IRQ + 1,
+#endif
+#if (MAX_DMA_CHANNELS >= 12)
+ DMTE8_IRQ,
+ DMTE9_IRQ,
+ DMTE10_IRQ,
+ DMTE11_IRQ,
+#endif
+};
+
+/* Definitions for the SuperH DMAC */
+#define REQ_L 0x00000000
+#define REQ_E 0x00080000
+#define RACK_H 0x00000000
+#define RACK_L 0x00040000
+#define ACK_R 0x00000000
+#define ACK_W 0x00020000
+#define ACK_H 0x00000000
+#define ACK_L 0x00010000
+#define DM_INC 0x00004000
+#define DM_DEC 0x00008000
+#define SM_INC 0x00001000
+#define SM_DEC 0x00002000
+#define RS_IN 0x00000200
+#define RS_OUT 0x00000300
+#define TS_BLK 0x00000040
+#define TM_BUR 0x00000020
+#define CHCR_DE 0x00000001
+#define CHCR_TE 0x00000002
+#define CHCR_IE 0x00000004
+
+/* DMAOR definitions */
+#define DMAOR_AE 0x00000004
+#define DMAOR_NMIF 0x00000002
+#define DMAOR_DME 0x00000001
+
+/*
+ * Define the default configuration for dual address memory-memory transfer.
+ * The 0x400 value represents auto-request, external->external.
+ */
+#define RS_DUAL (DM_INC | SM_INC | 0x400 | TS_32)
+
+/* DMA base address */
+static u32 dma_base_addr[] __maybe_unused = {
+#if (MAX_DMA_CHANNELS >= 4)
+ SH_DMAC_BASE0 + 0x00, /* channel 0 */
+ SH_DMAC_BASE0 + 0x10,
+ SH_DMAC_BASE0 + 0x20,
+ SH_DMAC_BASE0 + 0x30,
+#endif
+#if (MAX_DMA_CHANNELS >= 6)
+ SH_DMAC_BASE0 + 0x50,
+ SH_DMAC_BASE0 + 0x60,
+#endif
+#if (MAX_DMA_CHANNELS >= 8)
+ SH_DMAC_BASE1 + 0x00,
+ SH_DMAC_BASE1 + 0x10,
+#endif
+#if (MAX_DMA_CHANNELS >= 12)
+ SH_DMAC_BASE1 + 0x20,
+ SH_DMAC_BASE1 + 0x30,
+ SH_DMAC_BASE1 + 0x50,
+ SH_DMAC_BASE1 + 0x60, /* channel 11 */
+#endif
+};
+
+/* DMA register */
+#define SAR 0x00
+#define DAR 0x04
+#define TCR 0x08
+#define CHCR 0x0C
+#define DMAOR 0x40
+
+#endif /* __DMA_SH_H */