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/
usr/
src/
linux-headers-3.0.0-14/
arch/
arm/
mach-u300/
include/
mach/
- drwxr-xr-x
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Viewing file:  coh901318.h (9.52 KB) -rw-r--r--Select action/file-type:  ( +) |  ( +) |  ( +) | Code ( +) | Session ( +) |  ( +) | SDB ( +) |  ( +) |  ( +) |  ( +) |  ( +) |  ( +) |
/*
*
* include/linux/coh901318.h
*
*
* Copyright (C) 2007-2009 ST-Ericsson
* License terms: GNU General Public License (GPL) version 2
* DMA driver for COH 901 318
* Author: Per Friden <per.friden@stericsson.com>
*/
#ifndef COH901318_H
#define COH901318_H
#include <linux/device.h>
#include <linux/dmaengine.h>
#define MAX_DMA_PACKET_SIZE_SHIFT 11
#define MAX_DMA_PACKET_SIZE (1 << MAX_DMA_PACKET_SIZE_SHIFT)
/**
* struct coh901318_lli - linked list item for DMAC
* @control: control settings for DMAC
* @src_addr: transfer source address
* @dst_addr: transfer destination address
* @link_addr: physical address to next lli
* @virt_link_addr: virtual address of next lli (only used by pool_free)
* @phy_this: physical address of current lli (only used by pool_free)
*/
struct coh901318_lli {
u32 control;
dma_addr_t src_addr;
dma_addr_t dst_addr;
dma_addr_t link_addr;
void *virt_link_addr;
dma_addr_t phy_this;
};
/**
* struct coh901318_params - parameters for DMAC configuration
* @config: DMA config register
* @ctrl_lli_last: DMA control register for the last lli in the list
* @ctrl_lli: DMA control register for an lli
* @ctrl_lli_chained: DMA control register for a chained lli
*/
struct coh901318_params {
u32 config;
u32 ctrl_lli_last;
u32 ctrl_lli;
u32 ctrl_lli_chained;
};
/**
* struct coh_dma_channel - dma channel base
* @name: ascii name of dma channel
* @number: channel id number
* @desc_nbr_max: number of preallocated descriptors
* @priority_high: prio of channel, 0 low otherwise high.
* @param: configuration parameters
* @dev_addr: physical address of periphal connected to channel
*/
struct coh_dma_channel {
const char name[32];
const int number;
const int desc_nbr_max;
const int priority_high;
const struct coh901318_params param;
const dma_addr_t dev_addr;
};
/**
* dma_access_memory_state_t - register dma for memory access
*
* @dev: The dma device
* @active: 1 means dma intends to access memory
* 0 means dma wont access memory
*/
typedef void (*dma_access_memory_state_t)(struct device *dev,
bool active);
/**
* struct powersave - DMA power save structure
* @lock: lock protecting data in this struct
* @started_channels: bit mask indicating active dma channels
*/
struct powersave {
spinlock_t lock;
u64 started_channels;
};
/**
* struct coh901318_platform - platform arch structure
* @chans_slave: specifying dma slave channels
* @chans_memcpy: specifying dma memcpy channels
* @access_memory_state: requesting DMA memory access (on / off)
* @chan_conf: dma channel configurations
* @max_channels: max number of dma chanenls
*/
struct coh901318_platform {
const int *chans_slave;
const int *chans_memcpy;
const dma_access_memory_state_t access_memory_state;
const struct coh_dma_channel *chan_conf;
const int max_channels;
};
#ifdef CONFIG_COH901318
/**
* coh901318_filter_id() - DMA channel filter function
* @chan: dma channel handle
* @chan_id: id of dma channel to be filter out
*
* In dma_request_channel() it specifies what channel id to be requested
*/
bool coh901318_filter_id(struct dma_chan *chan, void *chan_id);
#else
static inline bool coh901318_filter_id(struct dma_chan *chan, void *chan_id)
{
return false;
}
#endif
/*
* DMA Controller - this access the static mappings of the coh901318 dma.
*
*/
#define COH901318_MOD32_MASK (0x1F)
#define COH901318_WORD_MASK (0xFFFFFFFF)
/* INT_STATUS - Interrupt Status Registers 32bit (R/-) */
#define COH901318_INT_STATUS1 (0x0000)
#define COH901318_INT_STATUS2 (0x0004)
/* TC_INT_STATUS - Terminal Count Interrupt Status Registers 32bit (R/-) */
#define COH901318_TC_INT_STATUS1 (0x0008)
#define COH901318_TC_INT_STATUS2 (0x000C)
/* TC_INT_CLEAR - Terminal Count Interrupt Clear Registers 32bit (-/W) */
#define COH901318_TC_INT_CLEAR1 (0x0010)
#define COH901318_TC_INT_CLEAR2 (0x0014)
/* RAW_TC_INT_STATUS - Raw Term Count Interrupt Status Registers 32bit (R/-) */
#define COH901318_RAW_TC_INT_STATUS1 (0x0018)
#define COH901318_RAW_TC_INT_STATUS2 (0x001C)
/* BE_INT_STATUS - Bus Error Interrupt Status Registers 32bit (R/-) */
#define COH901318_BE_INT_STATUS1 (0x0020)
#define COH901318_BE_INT_STATUS2 (0x0024)
/* BE_INT_CLEAR - Bus Error Interrupt Clear Registers 32bit (-/W) */
#define COH901318_BE_INT_CLEAR1 (0x0028)
#define COH901318_BE_INT_CLEAR2 (0x002C)
/* RAW_BE_INT_STATUS - Raw Term Count Interrupt Status Registers 32bit (R/-) */
#define COH901318_RAW_BE_INT_STATUS1 (0x0030)
#define COH901318_RAW_BE_INT_STATUS2 (0x0034)
/*
* CX_CFG - Channel Configuration Registers 32bit (R/W)
*/
#define COH901318_CX_CFG (0x0100)
#define COH901318_CX_CFG_SPACING (0x04)
/* Channel enable activates tha dma job */
#define COH901318_CX_CFG_CH_ENABLE (0x00000001)
#define COH901318_CX_CFG_CH_DISABLE (0x00000000)
/* Request Mode */
#define COH901318_CX_CFG_RM_MASK (0x00000006)
#define COH901318_CX_CFG_RM_MEMORY_TO_MEMORY (0x0 << 1)
#define COH901318_CX_CFG_RM_PRIMARY_TO_MEMORY (0x1 << 1)
#define COH901318_CX_CFG_RM_MEMORY_TO_PRIMARY (0x1 << 1)
#define COH901318_CX_CFG_RM_PRIMARY_TO_SECONDARY (0x3 << 1)
#define COH901318_CX_CFG_RM_SECONDARY_TO_PRIMARY (0x3 << 1)
/* Linked channel request field. RM must == 11 */
#define COH901318_CX_CFG_LCRF_SHIFT 3
#define COH901318_CX_CFG_LCRF_MASK (0x000001F8)
#define COH901318_CX_CFG_LCR_DISABLE (0x00000000)
/* Terminal Counter Interrupt Request Mask */
#define COH901318_CX_CFG_TC_IRQ_ENABLE (0x00000200)
#define COH901318_CX_CFG_TC_IRQ_DISABLE (0x00000000)
/* Bus Error interrupt Mask */
#define COH901318_CX_CFG_BE_IRQ_ENABLE (0x00000400)
#define COH901318_CX_CFG_BE_IRQ_DISABLE (0x00000000)
/*
* CX_STAT - Channel Status Registers 32bit (R/-)
*/
#define COH901318_CX_STAT (0x0200)
#define COH901318_CX_STAT_SPACING (0x04)
#define COH901318_CX_STAT_RBE_IRQ_IND (0x00000008)
#define COH901318_CX_STAT_RTC_IRQ_IND (0x00000004)
#define COH901318_CX_STAT_ACTIVE (0x00000002)
#define COH901318_CX_STAT_ENABLED (0x00000001)
/*
* CX_CTRL - Channel Control Registers 32bit (R/W)
*/
#define COH901318_CX_CTRL (0x0400)
#define COH901318_CX_CTRL_SPACING (0x10)
/* Transfer Count Enable */
#define COH901318_CX_CTRL_TC_ENABLE (0x00001000)
#define COH901318_CX_CTRL_TC_DISABLE (0x00000000)
/* Transfer Count Value 0 - 4095 */
#define COH901318_CX_CTRL_TC_VALUE_MASK (0x00000FFF)
/* Burst count */
#define COH901318_CX_CTRL_BURST_COUNT_MASK (0x0000E000)
#define COH901318_CX_CTRL_BURST_COUNT_64_BYTES (0x7 << 13)
#define COH901318_CX_CTRL_BURST_COUNT_48_BYTES (0x6 << 13)
#define COH901318_CX_CTRL_BURST_COUNT_32_BYTES (0x5 << 13)
#define COH901318_CX_CTRL_BURST_COUNT_16_BYTES (0x4 << 13)
#define COH901318_CX_CTRL_BURST_COUNT_8_BYTES (0x3 << 13)
#define COH901318_CX_CTRL_BURST_COUNT_4_BYTES (0x2 << 13)
#define COH901318_CX_CTRL_BURST_COUNT_2_BYTES (0x1 << 13)
#define COH901318_CX_CTRL_BURST_COUNT_1_BYTE (0x0 << 13)
/* Source bus size */
#define COH901318_CX_CTRL_SRC_BUS_SIZE_MASK (0x00030000)
#define COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS (0x2 << 16)
#define COH901318_CX_CTRL_SRC_BUS_SIZE_16_BITS (0x1 << 16)
#define COH901318_CX_CTRL_SRC_BUS_SIZE_8_BITS (0x0 << 16)
/* Source address increment */
#define COH901318_CX_CTRL_SRC_ADDR_INC_ENABLE (0x00040000)
#define COH901318_CX_CTRL_SRC_ADDR_INC_DISABLE (0x00000000)
/* Destination Bus Size */
#define COH901318_CX_CTRL_DST_BUS_SIZE_MASK (0x00180000)
#define COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS (0x2 << 19)
#define COH901318_CX_CTRL_DST_BUS_SIZE_16_BITS (0x1 << 19)
#define COH901318_CX_CTRL_DST_BUS_SIZE_8_BITS (0x0 << 19)
/* Destination address increment */
#define COH901318_CX_CTRL_DST_ADDR_INC_ENABLE (0x00200000)
#define COH901318_CX_CTRL_DST_ADDR_INC_DISABLE (0x00000000)
/* Master Mode (Master2 is only connected to MSL) */
#define COH901318_CX_CTRL_MASTER_MODE_MASK (0x00C00000)
#define COH901318_CX_CTRL_MASTER_MODE_M2R_M1W (0x3 << 22)
#define COH901318_CX_CTRL_MASTER_MODE_M1R_M2W (0x2 << 22)
#define COH901318_CX_CTRL_MASTER_MODE_M2RW (0x1 << 22)
#define COH901318_CX_CTRL_MASTER_MODE_M1RW (0x0 << 22)
/* Terminal Count flag to PER enable */
#define COH901318_CX_CTRL_TCP_ENABLE (0x01000000)
#define COH901318_CX_CTRL_TCP_DISABLE (0x00000000)
/* Terminal Count flags to CPU enable */
#define COH901318_CX_CTRL_TC_IRQ_ENABLE (0x02000000)
#define COH901318_CX_CTRL_TC_IRQ_DISABLE (0x00000000)
/* Hand shake to peripheral */
#define COH901318_CX_CTRL_HSP_ENABLE (0x04000000)
#define COH901318_CX_CTRL_HSP_DISABLE (0x00000000)
#define COH901318_CX_CTRL_HSS_ENABLE (0x08000000)
#define COH901318_CX_CTRL_HSS_DISABLE (0x00000000)
/* DMA mode */
#define COH901318_CX_CTRL_DDMA_MASK (0x30000000)
#define COH901318_CX_CTRL_DDMA_LEGACY (0x0 << 28)
#define COH901318_CX_CTRL_DDMA_DEMAND_DMA1 (0x1 << 28)
#define COH901318_CX_CTRL_DDMA_DEMAND_DMA2 (0x2 << 28)
/* Primary Request Data Destination */
#define COH901318_CX_CTRL_PRDD_MASK (0x40000000)
#define COH901318_CX_CTRL_PRDD_DEST (0x1 << 30)
#define COH901318_CX_CTRL_PRDD_SOURCE (0x0 << 30)
/*
* CX_SRC_ADDR - Channel Source Address Registers 32bit (R/W)
*/
#define COH901318_CX_SRC_ADDR (0x0404)
#define COH901318_CX_SRC_ADDR_SPACING (0x10)
/*
* CX_DST_ADDR - Channel Destination Address Registers 32bit R/W
*/
#define COH901318_CX_DST_ADDR (0x0408)
#define COH901318_CX_DST_ADDR_SPACING (0x10)
/*
* CX_LNK_ADDR - Channel Link Address Registers 32bit (R/W)
*/
#define COH901318_CX_LNK_ADDR (0x040C)
#define COH901318_CX_LNK_ADDR_SPACING (0x10)
#define COH901318_CX_LNK_LINK_IMMEDIATE (0x00000001)
#endif /* COH901318_H */
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