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/* dma.h: FRV DMA controller management
 *
 * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
 * Written by David Howells (dhowells@redhat.com)
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version
 * 2 of the License, or (at your option) any later version.
 */

#ifndef _ASM_DMA_H
#define _ASM_DMA_H

//#define DMA_DEBUG 1

#include <linux/interrupt.h>

#undef MAX_DMA_CHANNELS		/* don't use kernel/dma.c */

/* under 2.4 this is actually needed by the new bootmem allocator */
#define MAX_DMA_ADDRESS		PAGE_OFFSET

/*
 * FRV DMA controller management
 */
typedef irqreturn_t (*dma_irq_handler_t)(int dmachan, unsigned long cstr, void *data);

extern void frv_dma_init(void);

extern int frv_dma_open(const char *devname,
			unsigned long dmamask,
			int dmacap,
			dma_irq_handler_t handler,
			unsigned long irq_flags,
			void *data);

/* channels required */
#define FRV_DMA_MASK_ANY	ULONG_MAX	/* any channel */

/* capabilities required */
#define FRV_DMA_CAP_DREQ	0x01		/* DMA request pin */
#define FRV_DMA_CAP_DACK	0x02		/* DMA ACK pin */
#define FRV_DMA_CAP_DONE	0x04		/* DMA done pin */

extern void frv_dma_close(int dma);

extern void frv_dma_config(int dma, unsigned long ccfr, unsigned long cctr, unsigned long apr);

extern void frv_dma_start(int dma,
			  unsigned long sba, unsigned long dba,
			  unsigned long pix, unsigned long six, unsigned long bcl);

extern void frv_dma_restart_circular(int dma, unsigned long six);

extern void frv_dma_stop(int dma);

extern int is_frv_dma_interrupting(int dma);

extern void frv_dma_dump(int dma);

extern void frv_dma_status_clear(int dma);

#define FRV_DMA_NCHANS	8
#define FRV_DMA_4CHANS	4
#define FRV_DMA_8CHANS	8

#define DMAC_CCFRx		0x00	/* channel configuration reg */
#define DMAC_CCFRx_CM_SHIFT	16
#define DMAC_CCFRx_CM_DA	0x00000000
#define DMAC_CCFRx_CM_SCA	0x00010000
#define DMAC_CCFRx_CM_DCA	0x00020000
#define DMAC_CCFRx_CM_2D	0x00030000
#define DMAC_CCFRx_ATS_SHIFT	8
#define DMAC_CCFRx_RS_INTERN	0x00000000
#define DMAC_CCFRx_RS_EXTERN	0x00000001
#define DMAC_CCFRx_RS_SHIFT	0

#define DMAC_CSTRx		0x08	/* channel status reg */
#define DMAC_CSTRx_FS		0x0000003f
#define DMAC_CSTRx_NE		0x00000100
#define DMAC_CSTRx_FED		0x00000200
#define DMAC_CSTRx_WER		0x00000800
#define DMAC_CSTRx_RER		0x00001000
#define DMAC_CSTRx_CE		0x00002000
#define DMAC_CSTRx_INT		0x00800000
#define DMAC_CSTRx_BUSY		0x80000000

#define DMAC_CCTRx		0x10	/* channel control reg */
#define DMAC_CCTRx_DSIZ_1	0x00000000
#define DMAC_CCTRx_DSIZ_2	0x00000001
#define DMAC_CCTRx_DSIZ_4	0x00000002
#define DMAC_CCTRx_DSIZ_32	0x00000005
#define DMAC_CCTRx_DAU_HOLD	0x00000000
#define DMAC_CCTRx_DAU_INC	0x00000010
#define DMAC_CCTRx_DAU_DEC	0x00000020
#define DMAC_CCTRx_SSIZ_1	0x00000000
#define DMAC_CCTRx_SSIZ_2	0x00000100
#define DMAC_CCTRx_SSIZ_4	0x00000200
#define DMAC_CCTRx_SSIZ_32	0x00000500
#define DMAC_CCTRx_SAU_HOLD	0x00000000
#define DMAC_CCTRx_SAU_INC	0x00001000
#define DMAC_CCTRx_SAU_DEC	0x00002000
#define DMAC_CCTRx_FC		0x08000000
#define DMAC_CCTRx_ICE		0x10000000
#define DMAC_CCTRx_IE		0x40000000
#define DMAC_CCTRx_ACT		0x80000000

#define DMAC_SBAx		0x18	/* source base address reg */
#define DMAC_DBAx		0x20	/* data base address reg */
#define DMAC_PIXx		0x28	/* primary index reg */
#define DMAC_SIXx		0x30	/* secondary index reg */
#define DMAC_BCLx		0x38	/* byte count limit reg */
#define DMAC_APRx		0x40	/* alternate pointer reg */

/*
 * required for PCI + MODULES
 */
#ifdef CONFIG_PCI
extern int isa_dma_bridge_buggy;
#else
#define isa_dma_bridge_buggy 	(0)
#endif

#endif /* _ASM_DMA_H */

Filemanager

Name Type Size Permission Actions
Kbuild File 290 B 0644
asm-offsets.h File 35 B 0644
atomic.h File 4.97 KB 0644
atomic_defs.h File 4.66 KB 0644
ax88796.h File 751 B 0644
barrier.h File 720 B 0644
bitops.h File 7.12 KB 0644
bug.h File 1.36 KB 0644
bugs.h File 445 B 0644
busctl-regs.h File 2.02 KB 0644
cache.h File 727 B 0644
cacheflush.h File 3.05 KB 0644
checksum.h File 4.53 KB 0644
cmpxchg.h File 4.56 KB 0644
cpu-irqs.h File 2.59 KB 0644
current.h File 685 B 0644
delay.h File 1.28 KB 0644
div64.h File 31 B 0644
dm9000.h File 1.12 KB 0644
dma-mapping.h File 448 B 0644
dma.h File 3.63 KB 0644
elf.h File 5.18 KB 0644
emergency-restart.h File 149 B 0644
fpu.h File 261 B 0644
ftrace.h File 12 B 0644
futex.h File 416 B 0644
gdb-stub.h File 4.47 KB 0644
gpio-regs.h File 3.64 KB 0644
hardirq.h File 666 B 0644
highmem.h File 4.09 KB 0644
hw_irq.h File 484 B 0644
io.h File 9.75 KB 0644
irc-regs.h File 1.78 KB 0644
irq.h File 760 B 0644
irq_regs.h File 764 B 0644
irqflags.h File 3.71 KB 0644
kdebug.h File 32 B 0644
kmap_types.h File 123 B 0644
linkage.h File 114 B 0644
local.h File 140 B 0644
local64.h File 33 B 0644
math-emu.h File 6.38 KB 0644
mb-regs.h File 6.94 KB 0644
mb86943a.h File 1.84 KB 0644
mb93091-fpga-irqs.h File 1.06 KB 0644
mb93093-fpga-irqs.h File 789 B 0644
mb93493-irqs.h File 1.69 KB 0644
mb93493-regs.h File 12.46 KB 0644
mem-layout.h File 2.21 KB 0644
mmu.h File 1.26 KB 0644
mmu_context.h File 1.38 KB 0644
module.h File 617 B 0644
page.h File 2.08 KB 0644
pci.h File 1.23 KB 0644
percpu.h File 147 B 0644
perf_event.h File 487 B 0644
pgalloc.h File 1.87 KB 0644
pgtable.h File 16.02 KB 0644
processor.h File 2.85 KB 0644
ptrace.h File 1.2 KB 0644
sections.h File 1.1 KB 0644
segment.h File 1.08 KB 0644
serial-regs.h File 1.63 KB 0644
serial.h File 308 B 0644
setup.h File 641 B 0644
shmparam.h File 183 B 0644
signal.h File 141 B 0644
smp.h File 139 B 0644
spinlock.h File 516 B 0644
spr-regs.h File 17.93 KB 0644
string.h File 1.36 KB 0644
switch_to.h File 1.07 KB 0644
syscall.h File 2.73 KB 0644
termios.h File 425 B 0644
thread_info.h File 3.48 KB 0644
timer-regs.h File 3.63 KB 0644
timex.h File 720 B 0644
tlb.h File 615 B 0644
tlbflush.h File 1.88 KB 0644
topology.h File 229 B 0644
types.h File 595 B 0644
uaccess.h File 6.79 KB 0644
ucontext.h File 281 B 0644
unaligned.h File 694 B 0644
unistd.h File 928 B 0644
user.h File 3.29 KB 0644
vga.h File 464 B 0644
virtconvert.h File 1.09 KB 0644
xor.h File 29 B 0644