a5a503038e
Patch from Vitaly Wool This patch adds kernel headers for PNX4008 ARM platform. It's basically the same as the previos one, but with the rmk's comments taken into account. Signed-off-by: Vitaly Wool <vwool@ru.mvista.com> Signed-off-by: Dmitry Pervushin <dpervushin@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
163 lines
3.9 KiB
C
163 lines
3.9 KiB
C
/*
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* linux/include/asm-arm/arch-pnx4008/dma.h
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*
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* PNX4008 DMA header file
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*
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* Author: Vitaly Wool
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* Copyright: MontaVista Software Inc. (c) 2005
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef __ASM_ARCH_DMA_H
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#define __ASM_ARCH_DMA_H
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#include "platform.h"
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#define MAX_DMA_ADDRESS 0xffffffff
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#define MAX_DMA_CHANNELS 8
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#define DMAC_BASE IO_ADDRESS(PNX4008_DMA_CONFIG_BASE)
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#define DMAC_INT_STAT (DMAC_BASE + 0x0000)
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#define DMAC_INT_TC_STAT (DMAC_BASE + 0x0004)
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#define DMAC_INT_TC_CLEAR (DMAC_BASE + 0x0008)
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#define DMAC_INT_ERR_STAT (DMAC_BASE + 0x000c)
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#define DMAC_INT_ERR_CLEAR (DMAC_BASE + 0x0010)
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#define DMAC_SOFT_SREQ (DMAC_BASE + 0x0024)
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#define DMAC_CONFIG (DMAC_BASE + 0x0030)
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#define DMAC_Cx_SRC_ADDR(c) (DMAC_BASE + 0x0100 + (c) * 0x20)
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#define DMAC_Cx_DEST_ADDR(c) (DMAC_BASE + 0x0104 + (c) * 0x20)
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#define DMAC_Cx_LLI(c) (DMAC_BASE + 0x0108 + (c) * 0x20)
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#define DMAC_Cx_CONTROL(c) (DMAC_BASE + 0x010c + (c) * 0x20)
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#define DMAC_Cx_CONFIG(c) (DMAC_BASE + 0x0110 + (c) * 0x20)
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enum {
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WIDTH_BYTE = 0,
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WIDTH_HWORD,
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WIDTH_WORD
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};
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enum {
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FC_MEM2MEM_DMA,
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FC_MEM2PER_DMA,
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FC_PER2MEM_DMA,
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FC_PER2PER_DMA,
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FC_PER2PER_DPER,
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FC_MEM2PER_PER,
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FC_PER2MEM_PER,
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FC_PER2PER_SPER
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};
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enum {
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DMA_INT_UNKNOWN = 0,
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DMA_ERR_INT = 1,
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DMA_TC_INT = 2,
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};
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enum {
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DMA_BUFFER_ALLOCATED = 1,
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DMA_HAS_LL = 2,
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};
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enum {
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PER_CAM_DMA_1 = 0,
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PER_NDF_FLASH = 1,
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PER_MBX_SLAVE_FIFO = 2,
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PER_SPI2_REC_XMIT = 3,
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PER_MS_SD_RX_XMIT = 4,
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PER_HS_UART_1_XMIT = 5,
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PER_HS_UART_1_RX = 6,
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PER_HS_UART_2_XMIT = 7,
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PER_HS_UART_2_RX = 8,
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PER_HS_UART_7_XMIT = 9,
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PER_HS_UART_7_RX = 10,
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PER_SPI1_REC_XMIT = 11,
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PER_MLC_NDF_SREC = 12,
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PER_CAM_DMA_2 = 13,
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PER_PRNG_INFIFO = 14,
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PER_PRNG_OUTFIFO = 15,
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};
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struct pnx4008_dma_ch_ctrl {
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int tc_mask;
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int cacheable;
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int bufferable;
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int priv_mode;
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int di;
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int si;
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int dest_ahb1;
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int src_ahb1;
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int dwidth;
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int swidth;
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int dbsize;
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int sbsize;
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int tr_size;
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};
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struct pnx4008_dma_ch_config {
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int halt;
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int active;
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int lock;
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int itc;
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int ie;
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int flow_cntrl;
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int dest_per;
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int src_per;
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};
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struct pnx4008_dma_ll {
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unsigned long src_addr;
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unsigned long dest_addr;
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u32 next_dma;
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unsigned long ch_ctrl;
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struct pnx4008_dma_ll *next;
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int flags;
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void *alloc_data;
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int (*free) (void *);
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};
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struct pnx4008_dma_config {
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int is_ll;
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unsigned long src_addr;
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unsigned long dest_addr;
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unsigned long ch_ctrl;
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unsigned long ch_cfg;
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struct pnx4008_dma_ll *ll;
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u32 ll_dma;
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int flags;
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void *alloc_data;
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int (*free) (void *);
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};
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extern struct pnx4008_dma_ll *pnx4008_alloc_ll_entry(dma_addr_t *);
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extern void pnx4008_free_ll_entry(struct pnx4008_dma_ll *, dma_addr_t);
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extern void pnx4008_free_ll(u32 ll_dma, struct pnx4008_dma_ll *);
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extern int pnx4008_request_channel(char *, int,
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void (*)(int, int, void *, struct pt_regs *),
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void *);
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extern void pnx4008_free_channel(int);
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extern int pnx4008_config_dma(int, int, int);
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extern int pnx4008_dma_pack_control(const struct pnx4008_dma_ch_ctrl *,
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unsigned long *);
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extern int pnx4008_dma_parse_control(unsigned long,
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struct pnx4008_dma_ch_ctrl *);
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extern int pnx4008_dma_pack_config(const struct pnx4008_dma_ch_config *,
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unsigned long *);
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extern int pnx4008_dma_parse_config(unsigned long,
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struct pnx4008_dma_ch_config *);
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extern int pnx4008_config_channel(int, struct pnx4008_dma_config *);
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extern int pnx4008_channel_get_config(int, struct pnx4008_dma_config *);
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extern int pnx4008_dma_ch_enable(int);
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extern int pnx4008_dma_ch_disable(int);
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extern int pnx4008_dma_ch_enabled(int);
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extern void pnx4008_dma_split_head_entry(struct pnx4008_dma_config *,
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struct pnx4008_dma_ch_ctrl *);
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extern void pnx4008_dma_split_ll_entry(struct pnx4008_dma_ll *,
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struct pnx4008_dma_ch_ctrl *);
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#endif /* _ASM_ARCH_DMA_H */
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