sh: dma-sh updates for multi IRQ and new SH-4A CPUs.

This adds DMA support for newer SH-4A CPUs, particularly SH7763/64/80/85.

This also enables multi IRQ support for platforms that have multiple
vectors bound to the same IRQ source.

Signed-off-by: Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com>
Signed-off-by: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

6 files changed, 233 insertions, 68 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..e873ecaa5065
--- /dev/null
+++ b/arch/sh/include/asm/dma-sh.h
@@ -0,0 +1,117 @@
+/*
+ * 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 <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 (CONFIG_NR_ONCHIP_DMA_CHANNELS >= 4)
+    DMTE0_IRQ,
+    DMTE0_IRQ + 1,
+    DMTE0_IRQ + 2,
+    DMTE0_IRQ + 3,
+#endif
+#if (CONFIG_NR_ONCHIP_DMA_CHANNELS >= 6)
+    DMTE4_IRQ,
+    DMTE4_IRQ + 1,
+#endif
+#if (CONFIG_NR_ONCHIP_DMA_CHANNELS >= 8)
+    DMTE6_IRQ,
+    DMTE6_IRQ + 1,
+#endif
+#if (CONFIG_NR_ONCHIP_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 (CONFIG_NR_ONCHIP_DMA_CHANNELS >= 4)
+	SH_DMAC_BASE0 + 0x00,	/* channel 0 */
+	SH_DMAC_BASE0 + 0x10,
+	SH_DMAC_BASE0 + 0x20,
+	SH_DMAC_BASE0 + 0x30,
+#endif
+#if (CONFIG_NR_ONCHIP_DMA_CHANNELS >= 6)
+	SH_DMAC_BASE0 + 0x50,
+	SH_DMAC_BASE0 + 0x60,
+#endif
+#if (CONFIG_NR_ONCHIP_DMA_CHANNELS >= 8)
+	SH_DMAC_BASE1 + 0x00,
+	SH_DMAC_BASE1 + 0x10,
+#endif
+#if (CONFIG_NR_ONCHIP_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 */
diff --git a/arch/sh/include/asm/dma.h b/arch/sh/include/asm/dma.h
index beca7128e2ab..6bd178473878 100644
--- a/arch/sh/include/asm/dma.h
+++ b/arch/sh/include/asm/dma.h
@@ -25,9 +25,9 @@
 #define MAX_DMA_ADDRESS		(PAGE_OFFSET+0x10000000)
 
 #ifdef CONFIG_NR_DMA_CHANNELS
-#  define MAX_DMA_CHANNELS	(CONFIG_NR_DMA_CHANNELS)
+#  define MAX_DMA_CHANNELS   (CONFIG_NR_DMA_CHANNELS)
 #else
-#  define MAX_DMA_CHANNELS	(CONFIG_NR_ONCHIP_DMA_CHANNELS)
+#  define MAX_DMA_CHANNELS   (CONFIG_NR_ONCHIP_DMA_CHANNELS)
 #endif
 
 /*
diff --git a/arch/sh/include/cpu-sh3/cpu/dma.h b/arch/sh/include/cpu-sh3/cpu/dma.h
index 6813c3220a1d..0ea15f3f2363 100644
--- a/arch/sh/include/cpu-sh3/cpu/dma.h
+++ b/arch/sh/include/cpu-sh3/cpu/dma.h
@@ -1,22 +1,17 @@
 #ifndef __ASM_CPU_SH3_DMA_H
 #define __ASM_CPU_SH3_DMA_H
 
-
 #if defined(CONFIG_CPU_SUBTYPE_SH7720) || \
-    defined(CONFIG_CPU_SUBTYPE_SH7721)
-#define SH_DMAC_BASE	0xa4010020
-#else
-#define SH_DMAC_BASE	0xa4000020
+    defined(CONFIG_CPU_SUBTYPE_SH7721) || \
+    defined(CONFIG_CPU_SUBTYPE_SH7710) || \
+    defined(CONFIG_CPU_SUBTYPE_SH7712)
+#define SH_DMAC_BASE0	0xa4010020
+#else /* SH7705/06/07/09 */
+#define SH_DMAC_BASE0	0xa4000020
 #endif
 
-#if defined(CONFIG_CPU_SUBTYPE_SH7720) || defined(CONFIG_CPU_SUBTYPE_SH7709)
 #define DMTE0_IRQ	48
-#define DMTE1_IRQ	49
-#define DMTE2_IRQ	50
-#define DMTE3_IRQ	51
 #define DMTE4_IRQ	76
-#define DMTE5_IRQ	77
-#endif
 
 /* Definitions for the SuperH DMAC */
 #define TM_BURST	0x00000020
diff --git a/arch/sh/include/cpu-sh4/cpu/dma-sh4a.h b/arch/sh/include/cpu-sh4/cpu/dma-sh4a.h
new file mode 100644
index 000000000000..0ed5178fed69
--- /dev/null
+++ b/arch/sh/include/cpu-sh4/cpu/dma-sh4a.h
@@ -0,0 +1,94 @@
+#ifndef __ASM_SH_CPU_SH4_DMA_SH7780_H
+#define __ASM_SH_CPU_SH4_DMA_SH7780_H
+
+#if defined(CONFIG_CPU_SUBTYPE_SH7343) || \
+	defined(CONFIG_CPU_SUBTYPE_SH7722) || \
+	defined(CONFIG_CPU_SUBTYPE_SH7730)
+#define DMTE0_IRQ	48
+#define DMTE4_IRQ	76
+#define DMAE0_IRQ	78	/* DMA Error IRQ*/
+#define SH_DMAC_BASE0	0xFE008020
+#define SH_DMARS_BASE	0xFE009000
+#elif defined(CONFIG_CPU_SUBTYPE_SH7763) || \
+	defined(CONFIG_CPU_SUBTYPE_SH7764)
+#define DMTE0_IRQ	34
+#define DMTE4_IRQ	44
+#define DMAE0_IRQ	38
+#define SH_DMAC_BASE0	0xFF608020
+#define SH_DMARS_BASE	0xFF609000
+#elif defined(CONFIG_CPU_SUBTYPE_SH7723)
+#define DMTE0_IRQ	48	/* DMAC0A*/
+#define DMTE4_IRQ	40	/* DMAC0B */
+#define DMTE6_IRQ	42
+#define DMTE8_IRQ	76	/* DMAC1A */
+#define DMTE9_IRQ	77
+#define DMTE10_IRQ	72	/* DMAC1B */
+#define DMTE11_IRQ	73
+#define DMAE0_IRQ	78	/* DMA Error IRQ*/
+#define DMAE1_IRQ	74	/* DMA Error IRQ*/
+#define SH_DMAC_BASE0	0xFE008020
+#define SH_DMAC_BASE1	0xFDC08020
+#define SH_DMARS_BASE	0xFDC09000
+#elif defined(CONFIG_CPU_SUBTYPE_SH7780)
+#define DMTE0_IRQ	34
+#define DMTE4_IRQ	44
+#define DMTE6_IRQ	46
+#define DMTE8_IRQ	92
+#define DMTE9_IRQ	93
+#define DMTE10_IRQ	94
+#define DMTE11_IRQ	95
+#define DMAE0_IRQ	38	/* DMA Error IRQ */
+#define SH_DMAC_BASE0	0xFC808020
+#define SH_DMAC_BASE1	0xFC818020
+#define SH_DMARS_BASE	0xFC809000
+#else /* SH7785 */
+#define DMTE0_IRQ	33
+#define DMTE4_IRQ	37
+#define DMTE6_IRQ	52
+#define DMTE8_IRQ	54
+#define DMTE9_IRQ	55
+#define DMTE10_IRQ	56
+#define DMTE11_IRQ	57
+#define DMAE0_IRQ	39	/* DMA Error IRQ0 */
+#define DMAE1_IRQ	58	/* DMA Error IRQ1 */
+#define SH_DMAC_BASE0	0xFC808020
+#define SH_DMAC_BASE1	0xFCC08020
+#define SH_DMARS_BASE	0xFC809000
+#endif
+
+#define REQ_HE	0x000000C0
+#define REQ_H	0x00000080
+#define REQ_LE	0x00000040
+#define TM_BURST 0x0000020
+#define TS_8	0x00000000
+#define TS_16	0x00000008
+#define TS_32	0x00000010
+#define TS_16BLK	0x00000018
+#define TS_32BLK	0x00100000
+
+/*
+ * The SuperH DMAC supports a number of transmit sizes, we list them here,
+ * with their respective values as they appear in the CHCR registers.
+ *
+ * Defaults to a 64-bit transfer size.
+ */
+enum {
+	XMIT_SZ_8BIT,
+	XMIT_SZ_16BIT,
+	XMIT_SZ_32BIT,
+	XMIT_SZ_128BIT,
+	XMIT_SZ_256BIT,
+};
+
+/*
+ * The DMA count is defined as the number of bytes to transfer.
+ */
+static unsigned int ts_shift[] __maybe_unused = {
+	[XMIT_SZ_8BIT]		= 0,
+	[XMIT_SZ_16BIT]		= 1,
+	[XMIT_SZ_32BIT]		= 2,
+	[XMIT_SZ_128BIT]	= 4,
+	[XMIT_SZ_256BIT]	= 5,
+};
+
+#endif /* __ASM_SH_CPU_SH4_DMA_SH7780_H */
diff --git a/arch/sh/include/cpu-sh4/cpu/dma-sh7780.h b/arch/sh/include/cpu-sh4/cpu/dma-sh7780.h
deleted file mode 100644
index 71b426a6e482..000000000000
--- a/arch/sh/include/cpu-sh4/cpu/dma-sh7780.h
+++ /dev/null
@@ -1,39 +0,0 @@
-#ifndef __ASM_SH_CPU_SH4_DMA_SH7780_H
-#define __ASM_SH_CPU_SH4_DMA_SH7780_H
-
-#define REQ_HE	0x000000C0
-#define REQ_H	0x00000080
-#define REQ_LE	0x00000040
-#define TM_BURST 0x0000020
-#define TS_8	0x00000000
-#define TS_16	0x00000008
-#define TS_32	0x00000010
-#define TS_16BLK	0x00000018
-#define TS_32BLK	0x00100000
-
-/*
- * The SuperH DMAC supports a number of transmit sizes, we list them here,
- * with their respective values as they appear in the CHCR registers.
- *
- * Defaults to a 64-bit transfer size.
- */
-enum {
-	XMIT_SZ_8BIT,
-	XMIT_SZ_16BIT,
-	XMIT_SZ_32BIT,
-	XMIT_SZ_128BIT,
-	XMIT_SZ_256BIT,
-};
-
-/*
- * The DMA count is defined as the number of bytes to transfer.
- */
-static unsigned int ts_shift[] __maybe_unused = {
-	[XMIT_SZ_8BIT]		= 0,
-	[XMIT_SZ_16BIT]		= 1,
-	[XMIT_SZ_32BIT]		= 2,
-	[XMIT_SZ_128BIT]	= 4,
-	[XMIT_SZ_256BIT]	= 5,
-};
-
-#endif /* __ASM_SH_CPU_SH4_DMA_SH7780_H */
diff --git a/arch/sh/include/cpu-sh4/cpu/dma.h b/arch/sh/include/cpu-sh4/cpu/dma.h
index 235b7cd1fc9a..bcb30246e85c 100644
--- a/arch/sh/include/cpu-sh4/cpu/dma.h
+++ b/arch/sh/include/cpu-sh4/cpu/dma.h
@@ -1,31 +1,29 @@
 #ifndef __ASM_CPU_SH4_DMA_H
 #define __ASM_CPU_SH4_DMA_H
 
-#define DMAOR_INIT	( 0x8000 | DMAOR_DME )
-
 /* SH7751/7760/7780 DMA IRQ sources */
-#define DMTE0_IRQ	34
-#define DMTE1_IRQ	35
-#define DMTE2_IRQ	36
-#define DMTE3_IRQ	37
-#define DMTE4_IRQ	44
-#define DMTE5_IRQ	45
-#define DMTE6_IRQ	46
-#define DMTE7_IRQ	47
-#define DMAE_IRQ	38
 
 #ifdef CONFIG_CPU_SH4A
-#define SH_DMAC_BASE	0xfc808020
 
+#define DMAOR_INIT	(DMAOR_DME)
 #define CHCR_TS_MASK	0x18
 #define CHCR_TS_SHIFT	3
 
-#include <cpu/dma-sh7780.h>
-#else
-#define SH_DMAC_BASE	0xffa00000
+#include <cpu/dma-sh4a.h>
+#else /* CONFIG_CPU_SH4A */
+/*
+ * SH7750/SH7751/SH7760
+ */
+#define DMTE0_IRQ	34
+#define DMTE4_IRQ	44
+#define DMTE6_IRQ	46
+#define DMAE0_IRQ	38
 
+#define DMAOR_INIT	(0x8000|DMAOR_DME)
+#define SH_DMAC_BASE0	0xffa00000
+#define SH_DMAC_BASE1	0xffa00070
 /* Definitions for the SuperH DMAC */
-#define TM_BURST	0x0000080
+#define TM_BURST	0x00000080
 #define TS_8		0x00000010
 #define TS_16		0x00000020
 #define TS_32		0x00000030