mirror of
https://github.com/torvalds/linux.git
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5d30b4274f
... and BTW, failing copy_to_user() means EFAULT, not EINVAL Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2810 lines
80 KiB
C
2810 lines
80 KiB
C
/*
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* driver/dma/coh901318.c
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*
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* Copyright (C) 2007-2009 ST-Ericsson
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* License terms: GNU General Public License (GPL) version 2
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* DMA driver for COH 901 318
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* Author: Per Friden <per.friden@stericsson.com>
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*/
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/kernel.h> /* printk() */
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#include <linux/fs.h> /* everything... */
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#include <linux/scatterlist.h>
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#include <linux/slab.h> /* kmalloc() */
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#include <linux/dmaengine.h>
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#include <linux/platform_device.h>
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#include <linux/device.h>
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#include <linux/irqreturn.h>
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#include <linux/interrupt.h>
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#include <linux/io.h>
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#include <linux/uaccess.h>
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#include <linux/debugfs.h>
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#include <linux/platform_data/dma-coh901318.h>
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#include <linux/of_dma.h>
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#include "coh901318.h"
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#include "dmaengine.h"
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#define COH901318_MOD32_MASK (0x1F)
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#define COH901318_WORD_MASK (0xFFFFFFFF)
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/* INT_STATUS - Interrupt Status Registers 32bit (R/-) */
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#define COH901318_INT_STATUS1 (0x0000)
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#define COH901318_INT_STATUS2 (0x0004)
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/* TC_INT_STATUS - Terminal Count Interrupt Status Registers 32bit (R/-) */
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#define COH901318_TC_INT_STATUS1 (0x0008)
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#define COH901318_TC_INT_STATUS2 (0x000C)
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/* TC_INT_CLEAR - Terminal Count Interrupt Clear Registers 32bit (-/W) */
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#define COH901318_TC_INT_CLEAR1 (0x0010)
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#define COH901318_TC_INT_CLEAR2 (0x0014)
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/* RAW_TC_INT_STATUS - Raw Term Count Interrupt Status Registers 32bit (R/-) */
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#define COH901318_RAW_TC_INT_STATUS1 (0x0018)
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#define COH901318_RAW_TC_INT_STATUS2 (0x001C)
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/* BE_INT_STATUS - Bus Error Interrupt Status Registers 32bit (R/-) */
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#define COH901318_BE_INT_STATUS1 (0x0020)
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#define COH901318_BE_INT_STATUS2 (0x0024)
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/* BE_INT_CLEAR - Bus Error Interrupt Clear Registers 32bit (-/W) */
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#define COH901318_BE_INT_CLEAR1 (0x0028)
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#define COH901318_BE_INT_CLEAR2 (0x002C)
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/* RAW_BE_INT_STATUS - Raw Term Count Interrupt Status Registers 32bit (R/-) */
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#define COH901318_RAW_BE_INT_STATUS1 (0x0030)
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#define COH901318_RAW_BE_INT_STATUS2 (0x0034)
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/*
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* CX_CFG - Channel Configuration Registers 32bit (R/W)
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*/
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#define COH901318_CX_CFG (0x0100)
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#define COH901318_CX_CFG_SPACING (0x04)
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/* Channel enable activates tha dma job */
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#define COH901318_CX_CFG_CH_ENABLE (0x00000001)
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#define COH901318_CX_CFG_CH_DISABLE (0x00000000)
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/* Request Mode */
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#define COH901318_CX_CFG_RM_MASK (0x00000006)
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#define COH901318_CX_CFG_RM_MEMORY_TO_MEMORY (0x0 << 1)
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#define COH901318_CX_CFG_RM_PRIMARY_TO_MEMORY (0x1 << 1)
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#define COH901318_CX_CFG_RM_MEMORY_TO_PRIMARY (0x1 << 1)
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#define COH901318_CX_CFG_RM_PRIMARY_TO_SECONDARY (0x3 << 1)
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#define COH901318_CX_CFG_RM_SECONDARY_TO_PRIMARY (0x3 << 1)
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/* Linked channel request field. RM must == 11 */
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#define COH901318_CX_CFG_LCRF_SHIFT 3
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#define COH901318_CX_CFG_LCRF_MASK (0x000001F8)
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#define COH901318_CX_CFG_LCR_DISABLE (0x00000000)
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/* Terminal Counter Interrupt Request Mask */
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#define COH901318_CX_CFG_TC_IRQ_ENABLE (0x00000200)
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#define COH901318_CX_CFG_TC_IRQ_DISABLE (0x00000000)
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/* Bus Error interrupt Mask */
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#define COH901318_CX_CFG_BE_IRQ_ENABLE (0x00000400)
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#define COH901318_CX_CFG_BE_IRQ_DISABLE (0x00000000)
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/*
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* CX_STAT - Channel Status Registers 32bit (R/-)
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*/
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#define COH901318_CX_STAT (0x0200)
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#define COH901318_CX_STAT_SPACING (0x04)
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#define COH901318_CX_STAT_RBE_IRQ_IND (0x00000008)
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#define COH901318_CX_STAT_RTC_IRQ_IND (0x00000004)
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#define COH901318_CX_STAT_ACTIVE (0x00000002)
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#define COH901318_CX_STAT_ENABLED (0x00000001)
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/*
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* CX_CTRL - Channel Control Registers 32bit (R/W)
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*/
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#define COH901318_CX_CTRL (0x0400)
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#define COH901318_CX_CTRL_SPACING (0x10)
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/* Transfer Count Enable */
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#define COH901318_CX_CTRL_TC_ENABLE (0x00001000)
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#define COH901318_CX_CTRL_TC_DISABLE (0x00000000)
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/* Transfer Count Value 0 - 4095 */
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#define COH901318_CX_CTRL_TC_VALUE_MASK (0x00000FFF)
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/* Burst count */
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#define COH901318_CX_CTRL_BURST_COUNT_MASK (0x0000E000)
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#define COH901318_CX_CTRL_BURST_COUNT_64_BYTES (0x7 << 13)
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#define COH901318_CX_CTRL_BURST_COUNT_48_BYTES (0x6 << 13)
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#define COH901318_CX_CTRL_BURST_COUNT_32_BYTES (0x5 << 13)
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#define COH901318_CX_CTRL_BURST_COUNT_16_BYTES (0x4 << 13)
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#define COH901318_CX_CTRL_BURST_COUNT_8_BYTES (0x3 << 13)
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#define COH901318_CX_CTRL_BURST_COUNT_4_BYTES (0x2 << 13)
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#define COH901318_CX_CTRL_BURST_COUNT_2_BYTES (0x1 << 13)
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#define COH901318_CX_CTRL_BURST_COUNT_1_BYTE (0x0 << 13)
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/* Source bus size */
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#define COH901318_CX_CTRL_SRC_BUS_SIZE_MASK (0x00030000)
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#define COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS (0x2 << 16)
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#define COH901318_CX_CTRL_SRC_BUS_SIZE_16_BITS (0x1 << 16)
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#define COH901318_CX_CTRL_SRC_BUS_SIZE_8_BITS (0x0 << 16)
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/* Source address increment */
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#define COH901318_CX_CTRL_SRC_ADDR_INC_ENABLE (0x00040000)
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#define COH901318_CX_CTRL_SRC_ADDR_INC_DISABLE (0x00000000)
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/* Destination Bus Size */
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#define COH901318_CX_CTRL_DST_BUS_SIZE_MASK (0x00180000)
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#define COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS (0x2 << 19)
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#define COH901318_CX_CTRL_DST_BUS_SIZE_16_BITS (0x1 << 19)
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#define COH901318_CX_CTRL_DST_BUS_SIZE_8_BITS (0x0 << 19)
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/* Destination address increment */
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#define COH901318_CX_CTRL_DST_ADDR_INC_ENABLE (0x00200000)
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#define COH901318_CX_CTRL_DST_ADDR_INC_DISABLE (0x00000000)
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/* Master Mode (Master2 is only connected to MSL) */
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#define COH901318_CX_CTRL_MASTER_MODE_MASK (0x00C00000)
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#define COH901318_CX_CTRL_MASTER_MODE_M2R_M1W (0x3 << 22)
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#define COH901318_CX_CTRL_MASTER_MODE_M1R_M2W (0x2 << 22)
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#define COH901318_CX_CTRL_MASTER_MODE_M2RW (0x1 << 22)
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#define COH901318_CX_CTRL_MASTER_MODE_M1RW (0x0 << 22)
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/* Terminal Count flag to PER enable */
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#define COH901318_CX_CTRL_TCP_ENABLE (0x01000000)
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#define COH901318_CX_CTRL_TCP_DISABLE (0x00000000)
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/* Terminal Count flags to CPU enable */
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#define COH901318_CX_CTRL_TC_IRQ_ENABLE (0x02000000)
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#define COH901318_CX_CTRL_TC_IRQ_DISABLE (0x00000000)
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/* Hand shake to peripheral */
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#define COH901318_CX_CTRL_HSP_ENABLE (0x04000000)
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#define COH901318_CX_CTRL_HSP_DISABLE (0x00000000)
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#define COH901318_CX_CTRL_HSS_ENABLE (0x08000000)
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#define COH901318_CX_CTRL_HSS_DISABLE (0x00000000)
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/* DMA mode */
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#define COH901318_CX_CTRL_DDMA_MASK (0x30000000)
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#define COH901318_CX_CTRL_DDMA_LEGACY (0x0 << 28)
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#define COH901318_CX_CTRL_DDMA_DEMAND_DMA1 (0x1 << 28)
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#define COH901318_CX_CTRL_DDMA_DEMAND_DMA2 (0x2 << 28)
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/* Primary Request Data Destination */
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#define COH901318_CX_CTRL_PRDD_MASK (0x40000000)
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#define COH901318_CX_CTRL_PRDD_DEST (0x1 << 30)
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#define COH901318_CX_CTRL_PRDD_SOURCE (0x0 << 30)
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/*
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* CX_SRC_ADDR - Channel Source Address Registers 32bit (R/W)
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*/
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#define COH901318_CX_SRC_ADDR (0x0404)
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#define COH901318_CX_SRC_ADDR_SPACING (0x10)
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/*
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* CX_DST_ADDR - Channel Destination Address Registers 32bit R/W
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*/
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#define COH901318_CX_DST_ADDR (0x0408)
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#define COH901318_CX_DST_ADDR_SPACING (0x10)
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/*
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* CX_LNK_ADDR - Channel Link Address Registers 32bit (R/W)
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*/
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#define COH901318_CX_LNK_ADDR (0x040C)
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#define COH901318_CX_LNK_ADDR_SPACING (0x10)
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#define COH901318_CX_LNK_LINK_IMMEDIATE (0x00000001)
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/**
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* struct coh901318_params - parameters for DMAC configuration
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* @config: DMA config register
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* @ctrl_lli_last: DMA control register for the last lli in the list
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* @ctrl_lli: DMA control register for an lli
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* @ctrl_lli_chained: DMA control register for a chained lli
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*/
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struct coh901318_params {
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u32 config;
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u32 ctrl_lli_last;
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u32 ctrl_lli;
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u32 ctrl_lli_chained;
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};
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/**
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* struct coh_dma_channel - dma channel base
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* @name: ascii name of dma channel
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* @number: channel id number
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* @desc_nbr_max: number of preallocated descriptors
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* @priority_high: prio of channel, 0 low otherwise high.
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* @param: configuration parameters
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*/
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struct coh_dma_channel {
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const char name[32];
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const int number;
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const int desc_nbr_max;
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const int priority_high;
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const struct coh901318_params param;
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};
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/**
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* struct powersave - DMA power save structure
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* @lock: lock protecting data in this struct
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* @started_channels: bit mask indicating active dma channels
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*/
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struct powersave {
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spinlock_t lock;
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u64 started_channels;
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};
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/* points out all dma slave channels.
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* Syntax is [A1, B1, A2, B2, .... ,-1,-1]
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* Select all channels from A to B, end of list is marked with -1,-1
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*/
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static int dma_slave_channels[] = {
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U300_DMA_MSL_TX_0, U300_DMA_SPI_RX,
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U300_DMA_UART1_TX, U300_DMA_UART1_RX, -1, -1};
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/* points out all dma memcpy channels. */
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static int dma_memcpy_channels[] = {
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U300_DMA_GENERAL_PURPOSE_0, U300_DMA_GENERAL_PURPOSE_8, -1, -1};
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#define flags_memcpy_config (COH901318_CX_CFG_CH_DISABLE | \
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COH901318_CX_CFG_RM_MEMORY_TO_MEMORY | \
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COH901318_CX_CFG_LCR_DISABLE | \
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COH901318_CX_CFG_TC_IRQ_ENABLE | \
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COH901318_CX_CFG_BE_IRQ_ENABLE)
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#define flags_memcpy_lli_chained (COH901318_CX_CTRL_TC_ENABLE | \
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COH901318_CX_CTRL_BURST_COUNT_32_BYTES | \
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COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS | \
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COH901318_CX_CTRL_SRC_ADDR_INC_ENABLE | \
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COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS | \
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COH901318_CX_CTRL_DST_ADDR_INC_ENABLE | \
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COH901318_CX_CTRL_MASTER_MODE_M1RW | \
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COH901318_CX_CTRL_TCP_DISABLE | \
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COH901318_CX_CTRL_TC_IRQ_DISABLE | \
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COH901318_CX_CTRL_HSP_DISABLE | \
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COH901318_CX_CTRL_HSS_DISABLE | \
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COH901318_CX_CTRL_DDMA_LEGACY | \
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COH901318_CX_CTRL_PRDD_SOURCE)
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#define flags_memcpy_lli (COH901318_CX_CTRL_TC_ENABLE | \
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COH901318_CX_CTRL_BURST_COUNT_32_BYTES | \
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COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS | \
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COH901318_CX_CTRL_SRC_ADDR_INC_ENABLE | \
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COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS | \
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COH901318_CX_CTRL_DST_ADDR_INC_ENABLE | \
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COH901318_CX_CTRL_MASTER_MODE_M1RW | \
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COH901318_CX_CTRL_TCP_DISABLE | \
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COH901318_CX_CTRL_TC_IRQ_DISABLE | \
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COH901318_CX_CTRL_HSP_DISABLE | \
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COH901318_CX_CTRL_HSS_DISABLE | \
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COH901318_CX_CTRL_DDMA_LEGACY | \
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COH901318_CX_CTRL_PRDD_SOURCE)
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#define flags_memcpy_lli_last (COH901318_CX_CTRL_TC_ENABLE | \
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COH901318_CX_CTRL_BURST_COUNT_32_BYTES | \
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COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS | \
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COH901318_CX_CTRL_SRC_ADDR_INC_ENABLE | \
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COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS | \
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COH901318_CX_CTRL_DST_ADDR_INC_ENABLE | \
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COH901318_CX_CTRL_MASTER_MODE_M1RW | \
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COH901318_CX_CTRL_TCP_DISABLE | \
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COH901318_CX_CTRL_TC_IRQ_ENABLE | \
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COH901318_CX_CTRL_HSP_DISABLE | \
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COH901318_CX_CTRL_HSS_DISABLE | \
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COH901318_CX_CTRL_DDMA_LEGACY | \
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COH901318_CX_CTRL_PRDD_SOURCE)
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const struct coh_dma_channel chan_config[U300_DMA_CHANNELS] = {
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{
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.number = U300_DMA_MSL_TX_0,
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.name = "MSL TX 0",
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.priority_high = 0,
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},
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{
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.number = U300_DMA_MSL_TX_1,
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.name = "MSL TX 1",
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.priority_high = 0,
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.param.config = COH901318_CX_CFG_CH_DISABLE |
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COH901318_CX_CFG_LCR_DISABLE |
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COH901318_CX_CFG_TC_IRQ_ENABLE |
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COH901318_CX_CFG_BE_IRQ_ENABLE,
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.param.ctrl_lli_chained = 0 |
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COH901318_CX_CTRL_TC_ENABLE |
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COH901318_CX_CTRL_BURST_COUNT_32_BYTES |
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COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
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COH901318_CX_CTRL_SRC_ADDR_INC_ENABLE |
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COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
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COH901318_CX_CTRL_DST_ADDR_INC_DISABLE |
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COH901318_CX_CTRL_MASTER_MODE_M1R_M2W |
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COH901318_CX_CTRL_TCP_DISABLE |
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COH901318_CX_CTRL_TC_IRQ_DISABLE |
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COH901318_CX_CTRL_HSP_ENABLE |
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COH901318_CX_CTRL_HSS_DISABLE |
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COH901318_CX_CTRL_DDMA_LEGACY |
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COH901318_CX_CTRL_PRDD_SOURCE,
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.param.ctrl_lli = 0 |
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COH901318_CX_CTRL_TC_ENABLE |
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COH901318_CX_CTRL_BURST_COUNT_32_BYTES |
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COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
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COH901318_CX_CTRL_SRC_ADDR_INC_ENABLE |
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COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
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COH901318_CX_CTRL_DST_ADDR_INC_DISABLE |
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COH901318_CX_CTRL_MASTER_MODE_M1R_M2W |
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COH901318_CX_CTRL_TCP_ENABLE |
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COH901318_CX_CTRL_TC_IRQ_DISABLE |
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COH901318_CX_CTRL_HSP_ENABLE |
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COH901318_CX_CTRL_HSS_DISABLE |
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COH901318_CX_CTRL_DDMA_LEGACY |
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COH901318_CX_CTRL_PRDD_SOURCE,
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.param.ctrl_lli_last = 0 |
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COH901318_CX_CTRL_TC_ENABLE |
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COH901318_CX_CTRL_BURST_COUNT_32_BYTES |
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COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
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COH901318_CX_CTRL_SRC_ADDR_INC_ENABLE |
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COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
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COH901318_CX_CTRL_DST_ADDR_INC_DISABLE |
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COH901318_CX_CTRL_MASTER_MODE_M1R_M2W |
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COH901318_CX_CTRL_TCP_ENABLE |
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COH901318_CX_CTRL_TC_IRQ_ENABLE |
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COH901318_CX_CTRL_HSP_ENABLE |
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COH901318_CX_CTRL_HSS_DISABLE |
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COH901318_CX_CTRL_DDMA_LEGACY |
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COH901318_CX_CTRL_PRDD_SOURCE,
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},
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{
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.number = U300_DMA_MSL_TX_2,
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.name = "MSL TX 2",
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.priority_high = 0,
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.param.config = COH901318_CX_CFG_CH_DISABLE |
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COH901318_CX_CFG_LCR_DISABLE |
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COH901318_CX_CFG_TC_IRQ_ENABLE |
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COH901318_CX_CFG_BE_IRQ_ENABLE,
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.param.ctrl_lli_chained = 0 |
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COH901318_CX_CTRL_TC_ENABLE |
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COH901318_CX_CTRL_BURST_COUNT_32_BYTES |
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COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
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COH901318_CX_CTRL_SRC_ADDR_INC_ENABLE |
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COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
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COH901318_CX_CTRL_DST_ADDR_INC_DISABLE |
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COH901318_CX_CTRL_MASTER_MODE_M1R_M2W |
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COH901318_CX_CTRL_TCP_DISABLE |
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COH901318_CX_CTRL_TC_IRQ_DISABLE |
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COH901318_CX_CTRL_HSP_ENABLE |
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COH901318_CX_CTRL_HSS_DISABLE |
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COH901318_CX_CTRL_DDMA_LEGACY |
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COH901318_CX_CTRL_PRDD_SOURCE,
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.param.ctrl_lli = 0 |
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|
COH901318_CX_CTRL_TC_ENABLE |
|
|
COH901318_CX_CTRL_BURST_COUNT_32_BYTES |
|
|
COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
|
|
COH901318_CX_CTRL_SRC_ADDR_INC_ENABLE |
|
|
COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
|
|
COH901318_CX_CTRL_DST_ADDR_INC_DISABLE |
|
|
COH901318_CX_CTRL_MASTER_MODE_M1R_M2W |
|
|
COH901318_CX_CTRL_TCP_ENABLE |
|
|
COH901318_CX_CTRL_TC_IRQ_DISABLE |
|
|
COH901318_CX_CTRL_HSP_ENABLE |
|
|
COH901318_CX_CTRL_HSS_DISABLE |
|
|
COH901318_CX_CTRL_DDMA_LEGACY |
|
|
COH901318_CX_CTRL_PRDD_SOURCE,
|
|
.param.ctrl_lli_last = 0 |
|
|
COH901318_CX_CTRL_TC_ENABLE |
|
|
COH901318_CX_CTRL_BURST_COUNT_32_BYTES |
|
|
COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
|
|
COH901318_CX_CTRL_SRC_ADDR_INC_ENABLE |
|
|
COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
|
|
COH901318_CX_CTRL_DST_ADDR_INC_DISABLE |
|
|
COH901318_CX_CTRL_MASTER_MODE_M1R_M2W |
|
|
COH901318_CX_CTRL_TCP_ENABLE |
|
|
COH901318_CX_CTRL_TC_IRQ_ENABLE |
|
|
COH901318_CX_CTRL_HSP_ENABLE |
|
|
COH901318_CX_CTRL_HSS_DISABLE |
|
|
COH901318_CX_CTRL_DDMA_LEGACY |
|
|
COH901318_CX_CTRL_PRDD_SOURCE,
|
|
.desc_nbr_max = 10,
|
|
},
|
|
{
|
|
.number = U300_DMA_MSL_TX_3,
|
|
.name = "MSL TX 3",
|
|
.priority_high = 0,
|
|
.param.config = COH901318_CX_CFG_CH_DISABLE |
|
|
COH901318_CX_CFG_LCR_DISABLE |
|
|
COH901318_CX_CFG_TC_IRQ_ENABLE |
|
|
COH901318_CX_CFG_BE_IRQ_ENABLE,
|
|
.param.ctrl_lli_chained = 0 |
|
|
COH901318_CX_CTRL_TC_ENABLE |
|
|
COH901318_CX_CTRL_BURST_COUNT_32_BYTES |
|
|
COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
|
|
COH901318_CX_CTRL_SRC_ADDR_INC_ENABLE |
|
|
COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
|
|
COH901318_CX_CTRL_DST_ADDR_INC_DISABLE |
|
|
COH901318_CX_CTRL_MASTER_MODE_M1R_M2W |
|
|
COH901318_CX_CTRL_TCP_DISABLE |
|
|
COH901318_CX_CTRL_TC_IRQ_DISABLE |
|
|
COH901318_CX_CTRL_HSP_ENABLE |
|
|
COH901318_CX_CTRL_HSS_DISABLE |
|
|
COH901318_CX_CTRL_DDMA_LEGACY |
|
|
COH901318_CX_CTRL_PRDD_SOURCE,
|
|
.param.ctrl_lli = 0 |
|
|
COH901318_CX_CTRL_TC_ENABLE |
|
|
COH901318_CX_CTRL_BURST_COUNT_32_BYTES |
|
|
COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
|
|
COH901318_CX_CTRL_SRC_ADDR_INC_ENABLE |
|
|
COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
|
|
COH901318_CX_CTRL_DST_ADDR_INC_DISABLE |
|
|
COH901318_CX_CTRL_MASTER_MODE_M1R_M2W |
|
|
COH901318_CX_CTRL_TCP_ENABLE |
|
|
COH901318_CX_CTRL_TC_IRQ_DISABLE |
|
|
COH901318_CX_CTRL_HSP_ENABLE |
|
|
COH901318_CX_CTRL_HSS_DISABLE |
|
|
COH901318_CX_CTRL_DDMA_LEGACY |
|
|
COH901318_CX_CTRL_PRDD_SOURCE,
|
|
.param.ctrl_lli_last = 0 |
|
|
COH901318_CX_CTRL_TC_ENABLE |
|
|
COH901318_CX_CTRL_BURST_COUNT_32_BYTES |
|
|
COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
|
|
COH901318_CX_CTRL_SRC_ADDR_INC_ENABLE |
|
|
COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
|
|
COH901318_CX_CTRL_DST_ADDR_INC_DISABLE |
|
|
COH901318_CX_CTRL_MASTER_MODE_M1R_M2W |
|
|
COH901318_CX_CTRL_TCP_ENABLE |
|
|
COH901318_CX_CTRL_TC_IRQ_ENABLE |
|
|
COH901318_CX_CTRL_HSP_ENABLE |
|
|
COH901318_CX_CTRL_HSS_DISABLE |
|
|
COH901318_CX_CTRL_DDMA_LEGACY |
|
|
COH901318_CX_CTRL_PRDD_SOURCE,
|
|
},
|
|
{
|
|
.number = U300_DMA_MSL_TX_4,
|
|
.name = "MSL TX 4",
|
|
.priority_high = 0,
|
|
.param.config = COH901318_CX_CFG_CH_DISABLE |
|
|
COH901318_CX_CFG_LCR_DISABLE |
|
|
COH901318_CX_CFG_TC_IRQ_ENABLE |
|
|
COH901318_CX_CFG_BE_IRQ_ENABLE,
|
|
.param.ctrl_lli_chained = 0 |
|
|
COH901318_CX_CTRL_TC_ENABLE |
|
|
COH901318_CX_CTRL_BURST_COUNT_32_BYTES |
|
|
COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
|
|
COH901318_CX_CTRL_SRC_ADDR_INC_ENABLE |
|
|
COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
|
|
COH901318_CX_CTRL_DST_ADDR_INC_DISABLE |
|
|
COH901318_CX_CTRL_MASTER_MODE_M1R_M2W |
|
|
COH901318_CX_CTRL_TCP_DISABLE |
|
|
COH901318_CX_CTRL_TC_IRQ_DISABLE |
|
|
COH901318_CX_CTRL_HSP_ENABLE |
|
|
COH901318_CX_CTRL_HSS_DISABLE |
|
|
COH901318_CX_CTRL_DDMA_LEGACY |
|
|
COH901318_CX_CTRL_PRDD_SOURCE,
|
|
.param.ctrl_lli = 0 |
|
|
COH901318_CX_CTRL_TC_ENABLE |
|
|
COH901318_CX_CTRL_BURST_COUNT_32_BYTES |
|
|
COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
|
|
COH901318_CX_CTRL_SRC_ADDR_INC_ENABLE |
|
|
COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
|
|
COH901318_CX_CTRL_DST_ADDR_INC_DISABLE |
|
|
COH901318_CX_CTRL_MASTER_MODE_M1R_M2W |
|
|
COH901318_CX_CTRL_TCP_ENABLE |
|
|
COH901318_CX_CTRL_TC_IRQ_DISABLE |
|
|
COH901318_CX_CTRL_HSP_ENABLE |
|
|
COH901318_CX_CTRL_HSS_DISABLE |
|
|
COH901318_CX_CTRL_DDMA_LEGACY |
|
|
COH901318_CX_CTRL_PRDD_SOURCE,
|
|
.param.ctrl_lli_last = 0 |
|
|
COH901318_CX_CTRL_TC_ENABLE |
|
|
COH901318_CX_CTRL_BURST_COUNT_32_BYTES |
|
|
COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
|
|
COH901318_CX_CTRL_SRC_ADDR_INC_ENABLE |
|
|
COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
|
|
COH901318_CX_CTRL_DST_ADDR_INC_DISABLE |
|
|
COH901318_CX_CTRL_MASTER_MODE_M1R_M2W |
|
|
COH901318_CX_CTRL_TCP_ENABLE |
|
|
COH901318_CX_CTRL_TC_IRQ_ENABLE |
|
|
COH901318_CX_CTRL_HSP_ENABLE |
|
|
COH901318_CX_CTRL_HSS_DISABLE |
|
|
COH901318_CX_CTRL_DDMA_LEGACY |
|
|
COH901318_CX_CTRL_PRDD_SOURCE,
|
|
},
|
|
{
|
|
.number = U300_DMA_MSL_TX_5,
|
|
.name = "MSL TX 5",
|
|
.priority_high = 0,
|
|
},
|
|
{
|
|
.number = U300_DMA_MSL_TX_6,
|
|
.name = "MSL TX 6",
|
|
.priority_high = 0,
|
|
},
|
|
{
|
|
.number = U300_DMA_MSL_RX_0,
|
|
.name = "MSL RX 0",
|
|
.priority_high = 0,
|
|
},
|
|
{
|
|
.number = U300_DMA_MSL_RX_1,
|
|
.name = "MSL RX 1",
|
|
.priority_high = 0,
|
|
.param.config = COH901318_CX_CFG_CH_DISABLE |
|
|
COH901318_CX_CFG_LCR_DISABLE |
|
|
COH901318_CX_CFG_TC_IRQ_ENABLE |
|
|
COH901318_CX_CFG_BE_IRQ_ENABLE,
|
|
.param.ctrl_lli_chained = 0 |
|
|
COH901318_CX_CTRL_TC_ENABLE |
|
|
COH901318_CX_CTRL_BURST_COUNT_32_BYTES |
|
|
COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
|
|
COH901318_CX_CTRL_SRC_ADDR_INC_DISABLE |
|
|
COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
|
|
COH901318_CX_CTRL_DST_ADDR_INC_ENABLE |
|
|
COH901318_CX_CTRL_MASTER_MODE_M2R_M1W |
|
|
COH901318_CX_CTRL_TCP_DISABLE |
|
|
COH901318_CX_CTRL_TC_IRQ_DISABLE |
|
|
COH901318_CX_CTRL_HSP_ENABLE |
|
|
COH901318_CX_CTRL_HSS_DISABLE |
|
|
COH901318_CX_CTRL_DDMA_DEMAND_DMA1 |
|
|
COH901318_CX_CTRL_PRDD_DEST,
|
|
.param.ctrl_lli = 0,
|
|
.param.ctrl_lli_last = 0 |
|
|
COH901318_CX_CTRL_TC_ENABLE |
|
|
COH901318_CX_CTRL_BURST_COUNT_32_BYTES |
|
|
COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
|
|
COH901318_CX_CTRL_SRC_ADDR_INC_DISABLE |
|
|
COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
|
|
COH901318_CX_CTRL_DST_ADDR_INC_ENABLE |
|
|
COH901318_CX_CTRL_MASTER_MODE_M2R_M1W |
|
|
COH901318_CX_CTRL_TCP_DISABLE |
|
|
COH901318_CX_CTRL_TC_IRQ_ENABLE |
|
|
COH901318_CX_CTRL_HSP_ENABLE |
|
|
COH901318_CX_CTRL_HSS_DISABLE |
|
|
COH901318_CX_CTRL_DDMA_DEMAND_DMA1 |
|
|
COH901318_CX_CTRL_PRDD_DEST,
|
|
},
|
|
{
|
|
.number = U300_DMA_MSL_RX_2,
|
|
.name = "MSL RX 2",
|
|
.priority_high = 0,
|
|
.param.config = COH901318_CX_CFG_CH_DISABLE |
|
|
COH901318_CX_CFG_LCR_DISABLE |
|
|
COH901318_CX_CFG_TC_IRQ_ENABLE |
|
|
COH901318_CX_CFG_BE_IRQ_ENABLE,
|
|
.param.ctrl_lli_chained = 0 |
|
|
COH901318_CX_CTRL_TC_ENABLE |
|
|
COH901318_CX_CTRL_BURST_COUNT_32_BYTES |
|
|
COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
|
|
COH901318_CX_CTRL_SRC_ADDR_INC_DISABLE |
|
|
COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
|
|
COH901318_CX_CTRL_DST_ADDR_INC_ENABLE |
|
|
COH901318_CX_CTRL_MASTER_MODE_M2R_M1W |
|
|
COH901318_CX_CTRL_TCP_DISABLE |
|
|
COH901318_CX_CTRL_TC_IRQ_DISABLE |
|
|
COH901318_CX_CTRL_HSP_ENABLE |
|
|
COH901318_CX_CTRL_HSS_DISABLE |
|
|
COH901318_CX_CTRL_DDMA_DEMAND_DMA1 |
|
|
COH901318_CX_CTRL_PRDD_DEST,
|
|
.param.ctrl_lli = 0 |
|
|
COH901318_CX_CTRL_TC_ENABLE |
|
|
COH901318_CX_CTRL_BURST_COUNT_32_BYTES |
|
|
COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
|
|
COH901318_CX_CTRL_SRC_ADDR_INC_DISABLE |
|
|
COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
|
|
COH901318_CX_CTRL_DST_ADDR_INC_ENABLE |
|
|
COH901318_CX_CTRL_MASTER_MODE_M2R_M1W |
|
|
COH901318_CX_CTRL_TCP_DISABLE |
|
|
COH901318_CX_CTRL_TC_IRQ_ENABLE |
|
|
COH901318_CX_CTRL_HSP_ENABLE |
|
|
COH901318_CX_CTRL_HSS_DISABLE |
|
|
COH901318_CX_CTRL_DDMA_DEMAND_DMA1 |
|
|
COH901318_CX_CTRL_PRDD_DEST,
|
|
.param.ctrl_lli_last = 0 |
|
|
COH901318_CX_CTRL_TC_ENABLE |
|
|
COH901318_CX_CTRL_BURST_COUNT_32_BYTES |
|
|
COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
|
|
COH901318_CX_CTRL_SRC_ADDR_INC_DISABLE |
|
|
COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
|
|
COH901318_CX_CTRL_DST_ADDR_INC_ENABLE |
|
|
COH901318_CX_CTRL_MASTER_MODE_M2R_M1W |
|
|
COH901318_CX_CTRL_TCP_DISABLE |
|
|
COH901318_CX_CTRL_TC_IRQ_ENABLE |
|
|
COH901318_CX_CTRL_HSP_ENABLE |
|
|
COH901318_CX_CTRL_HSS_DISABLE |
|
|
COH901318_CX_CTRL_DDMA_DEMAND_DMA1 |
|
|
COH901318_CX_CTRL_PRDD_DEST,
|
|
},
|
|
{
|
|
.number = U300_DMA_MSL_RX_3,
|
|
.name = "MSL RX 3",
|
|
.priority_high = 0,
|
|
.param.config = COH901318_CX_CFG_CH_DISABLE |
|
|
COH901318_CX_CFG_LCR_DISABLE |
|
|
COH901318_CX_CFG_TC_IRQ_ENABLE |
|
|
COH901318_CX_CFG_BE_IRQ_ENABLE,
|
|
.param.ctrl_lli_chained = 0 |
|
|
COH901318_CX_CTRL_TC_ENABLE |
|
|
COH901318_CX_CTRL_BURST_COUNT_32_BYTES |
|
|
COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
|
|
COH901318_CX_CTRL_SRC_ADDR_INC_DISABLE |
|
|
COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
|
|
COH901318_CX_CTRL_DST_ADDR_INC_ENABLE |
|
|
COH901318_CX_CTRL_MASTER_MODE_M2R_M1W |
|
|
COH901318_CX_CTRL_TCP_DISABLE |
|
|
COH901318_CX_CTRL_TC_IRQ_DISABLE |
|
|
COH901318_CX_CTRL_HSP_ENABLE |
|
|
COH901318_CX_CTRL_HSS_DISABLE |
|
|
COH901318_CX_CTRL_DDMA_DEMAND_DMA1 |
|
|
COH901318_CX_CTRL_PRDD_DEST,
|
|
.param.ctrl_lli = 0 |
|
|
COH901318_CX_CTRL_TC_ENABLE |
|
|
COH901318_CX_CTRL_BURST_COUNT_32_BYTES |
|
|
COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
|
|
COH901318_CX_CTRL_SRC_ADDR_INC_DISABLE |
|
|
COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
|
|
COH901318_CX_CTRL_DST_ADDR_INC_ENABLE |
|
|
COH901318_CX_CTRL_MASTER_MODE_M2R_M1W |
|
|
COH901318_CX_CTRL_TCP_DISABLE |
|
|
COH901318_CX_CTRL_TC_IRQ_ENABLE |
|
|
COH901318_CX_CTRL_HSP_ENABLE |
|
|
COH901318_CX_CTRL_HSS_DISABLE |
|
|
COH901318_CX_CTRL_DDMA_DEMAND_DMA1 |
|
|
COH901318_CX_CTRL_PRDD_DEST,
|
|
.param.ctrl_lli_last = 0 |
|
|
COH901318_CX_CTRL_TC_ENABLE |
|
|
COH901318_CX_CTRL_BURST_COUNT_32_BYTES |
|
|
COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
|
|
COH901318_CX_CTRL_SRC_ADDR_INC_DISABLE |
|
|
COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
|
|
COH901318_CX_CTRL_DST_ADDR_INC_ENABLE |
|
|
COH901318_CX_CTRL_MASTER_MODE_M2R_M1W |
|
|
COH901318_CX_CTRL_TCP_DISABLE |
|
|
COH901318_CX_CTRL_TC_IRQ_ENABLE |
|
|
COH901318_CX_CTRL_HSP_ENABLE |
|
|
COH901318_CX_CTRL_HSS_DISABLE |
|
|
COH901318_CX_CTRL_DDMA_DEMAND_DMA1 |
|
|
COH901318_CX_CTRL_PRDD_DEST,
|
|
},
|
|
{
|
|
.number = U300_DMA_MSL_RX_4,
|
|
.name = "MSL RX 4",
|
|
.priority_high = 0,
|
|
.param.config = COH901318_CX_CFG_CH_DISABLE |
|
|
COH901318_CX_CFG_LCR_DISABLE |
|
|
COH901318_CX_CFG_TC_IRQ_ENABLE |
|
|
COH901318_CX_CFG_BE_IRQ_ENABLE,
|
|
.param.ctrl_lli_chained = 0 |
|
|
COH901318_CX_CTRL_TC_ENABLE |
|
|
COH901318_CX_CTRL_BURST_COUNT_32_BYTES |
|
|
COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
|
|
COH901318_CX_CTRL_SRC_ADDR_INC_DISABLE |
|
|
COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
|
|
COH901318_CX_CTRL_DST_ADDR_INC_ENABLE |
|
|
COH901318_CX_CTRL_MASTER_MODE_M2R_M1W |
|
|
COH901318_CX_CTRL_TCP_DISABLE |
|
|
COH901318_CX_CTRL_TC_IRQ_DISABLE |
|
|
COH901318_CX_CTRL_HSP_ENABLE |
|
|
COH901318_CX_CTRL_HSS_DISABLE |
|
|
COH901318_CX_CTRL_DDMA_DEMAND_DMA1 |
|
|
COH901318_CX_CTRL_PRDD_DEST,
|
|
.param.ctrl_lli = 0 |
|
|
COH901318_CX_CTRL_TC_ENABLE |
|
|
COH901318_CX_CTRL_BURST_COUNT_32_BYTES |
|
|
COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
|
|
COH901318_CX_CTRL_SRC_ADDR_INC_DISABLE |
|
|
COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
|
|
COH901318_CX_CTRL_DST_ADDR_INC_ENABLE |
|
|
COH901318_CX_CTRL_MASTER_MODE_M2R_M1W |
|
|
COH901318_CX_CTRL_TCP_DISABLE |
|
|
COH901318_CX_CTRL_TC_IRQ_ENABLE |
|
|
COH901318_CX_CTRL_HSP_ENABLE |
|
|
COH901318_CX_CTRL_HSS_DISABLE |
|
|
COH901318_CX_CTRL_DDMA_DEMAND_DMA1 |
|
|
COH901318_CX_CTRL_PRDD_DEST,
|
|
.param.ctrl_lli_last = 0 |
|
|
COH901318_CX_CTRL_TC_ENABLE |
|
|
COH901318_CX_CTRL_BURST_COUNT_32_BYTES |
|
|
COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
|
|
COH901318_CX_CTRL_SRC_ADDR_INC_DISABLE |
|
|
COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
|
|
COH901318_CX_CTRL_DST_ADDR_INC_ENABLE |
|
|
COH901318_CX_CTRL_MASTER_MODE_M2R_M1W |
|
|
COH901318_CX_CTRL_TCP_DISABLE |
|
|
COH901318_CX_CTRL_TC_IRQ_ENABLE |
|
|
COH901318_CX_CTRL_HSP_ENABLE |
|
|
COH901318_CX_CTRL_HSS_DISABLE |
|
|
COH901318_CX_CTRL_DDMA_DEMAND_DMA1 |
|
|
COH901318_CX_CTRL_PRDD_DEST,
|
|
},
|
|
{
|
|
.number = U300_DMA_MSL_RX_5,
|
|
.name = "MSL RX 5",
|
|
.priority_high = 0,
|
|
.param.config = COH901318_CX_CFG_CH_DISABLE |
|
|
COH901318_CX_CFG_LCR_DISABLE |
|
|
COH901318_CX_CFG_TC_IRQ_ENABLE |
|
|
COH901318_CX_CFG_BE_IRQ_ENABLE,
|
|
.param.ctrl_lli_chained = 0 |
|
|
COH901318_CX_CTRL_TC_ENABLE |
|
|
COH901318_CX_CTRL_BURST_COUNT_32_BYTES |
|
|
COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
|
|
COH901318_CX_CTRL_SRC_ADDR_INC_DISABLE |
|
|
COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
|
|
COH901318_CX_CTRL_DST_ADDR_INC_ENABLE |
|
|
COH901318_CX_CTRL_MASTER_MODE_M2R_M1W |
|
|
COH901318_CX_CTRL_TCP_DISABLE |
|
|
COH901318_CX_CTRL_TC_IRQ_DISABLE |
|
|
COH901318_CX_CTRL_HSP_ENABLE |
|
|
COH901318_CX_CTRL_HSS_DISABLE |
|
|
COH901318_CX_CTRL_DDMA_DEMAND_DMA1 |
|
|
COH901318_CX_CTRL_PRDD_DEST,
|
|
.param.ctrl_lli = 0 |
|
|
COH901318_CX_CTRL_TC_ENABLE |
|
|
COH901318_CX_CTRL_BURST_COUNT_32_BYTES |
|
|
COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
|
|
COH901318_CX_CTRL_SRC_ADDR_INC_DISABLE |
|
|
COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
|
|
COH901318_CX_CTRL_DST_ADDR_INC_ENABLE |
|
|
COH901318_CX_CTRL_MASTER_MODE_M2R_M1W |
|
|
COH901318_CX_CTRL_TCP_DISABLE |
|
|
COH901318_CX_CTRL_TC_IRQ_ENABLE |
|
|
COH901318_CX_CTRL_HSP_ENABLE |
|
|
COH901318_CX_CTRL_HSS_DISABLE |
|
|
COH901318_CX_CTRL_DDMA_DEMAND_DMA1 |
|
|
COH901318_CX_CTRL_PRDD_DEST,
|
|
.param.ctrl_lli_last = 0 |
|
|
COH901318_CX_CTRL_TC_ENABLE |
|
|
COH901318_CX_CTRL_BURST_COUNT_32_BYTES |
|
|
COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
|
|
COH901318_CX_CTRL_SRC_ADDR_INC_DISABLE |
|
|
COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
|
|
COH901318_CX_CTRL_DST_ADDR_INC_ENABLE |
|
|
COH901318_CX_CTRL_MASTER_MODE_M2R_M1W |
|
|
COH901318_CX_CTRL_TCP_DISABLE |
|
|
COH901318_CX_CTRL_TC_IRQ_ENABLE |
|
|
COH901318_CX_CTRL_HSP_ENABLE |
|
|
COH901318_CX_CTRL_HSS_DISABLE |
|
|
COH901318_CX_CTRL_DDMA_DEMAND_DMA1 |
|
|
COH901318_CX_CTRL_PRDD_DEST,
|
|
},
|
|
{
|
|
.number = U300_DMA_MSL_RX_6,
|
|
.name = "MSL RX 6",
|
|
.priority_high = 0,
|
|
},
|
|
/*
|
|
* Don't set up device address, burst count or size of src
|
|
* or dst bus for this peripheral - handled by PrimeCell
|
|
* DMA extension.
|
|
*/
|
|
{
|
|
.number = U300_DMA_MMCSD_RX_TX,
|
|
.name = "MMCSD RX TX",
|
|
.priority_high = 0,
|
|
.param.config = COH901318_CX_CFG_CH_DISABLE |
|
|
COH901318_CX_CFG_LCR_DISABLE |
|
|
COH901318_CX_CFG_TC_IRQ_ENABLE |
|
|
COH901318_CX_CFG_BE_IRQ_ENABLE,
|
|
.param.ctrl_lli_chained = 0 |
|
|
COH901318_CX_CTRL_TC_ENABLE |
|
|
COH901318_CX_CTRL_MASTER_MODE_M1RW |
|
|
COH901318_CX_CTRL_TCP_ENABLE |
|
|
COH901318_CX_CTRL_TC_IRQ_DISABLE |
|
|
COH901318_CX_CTRL_HSP_ENABLE |
|
|
COH901318_CX_CTRL_HSS_DISABLE |
|
|
COH901318_CX_CTRL_DDMA_LEGACY,
|
|
.param.ctrl_lli = 0 |
|
|
COH901318_CX_CTRL_TC_ENABLE |
|
|
COH901318_CX_CTRL_MASTER_MODE_M1RW |
|
|
COH901318_CX_CTRL_TCP_ENABLE |
|
|
COH901318_CX_CTRL_TC_IRQ_DISABLE |
|
|
COH901318_CX_CTRL_HSP_ENABLE |
|
|
COH901318_CX_CTRL_HSS_DISABLE |
|
|
COH901318_CX_CTRL_DDMA_LEGACY,
|
|
.param.ctrl_lli_last = 0 |
|
|
COH901318_CX_CTRL_TC_ENABLE |
|
|
COH901318_CX_CTRL_MASTER_MODE_M1RW |
|
|
COH901318_CX_CTRL_TCP_DISABLE |
|
|
COH901318_CX_CTRL_TC_IRQ_ENABLE |
|
|
COH901318_CX_CTRL_HSP_ENABLE |
|
|
COH901318_CX_CTRL_HSS_DISABLE |
|
|
COH901318_CX_CTRL_DDMA_LEGACY,
|
|
|
|
},
|
|
{
|
|
.number = U300_DMA_MSPRO_TX,
|
|
.name = "MSPRO TX",
|
|
.priority_high = 0,
|
|
},
|
|
{
|
|
.number = U300_DMA_MSPRO_RX,
|
|
.name = "MSPRO RX",
|
|
.priority_high = 0,
|
|
},
|
|
/*
|
|
* Don't set up device address, burst count or size of src
|
|
* or dst bus for this peripheral - handled by PrimeCell
|
|
* DMA extension.
|
|
*/
|
|
{
|
|
.number = U300_DMA_UART0_TX,
|
|
.name = "UART0 TX",
|
|
.priority_high = 0,
|
|
.param.config = COH901318_CX_CFG_CH_DISABLE |
|
|
COH901318_CX_CFG_LCR_DISABLE |
|
|
COH901318_CX_CFG_TC_IRQ_ENABLE |
|
|
COH901318_CX_CFG_BE_IRQ_ENABLE,
|
|
.param.ctrl_lli_chained = 0 |
|
|
COH901318_CX_CTRL_TC_ENABLE |
|
|
COH901318_CX_CTRL_MASTER_MODE_M1RW |
|
|
COH901318_CX_CTRL_TCP_ENABLE |
|
|
COH901318_CX_CTRL_TC_IRQ_DISABLE |
|
|
COH901318_CX_CTRL_HSP_ENABLE |
|
|
COH901318_CX_CTRL_HSS_DISABLE |
|
|
COH901318_CX_CTRL_DDMA_LEGACY,
|
|
.param.ctrl_lli = 0 |
|
|
COH901318_CX_CTRL_TC_ENABLE |
|
|
COH901318_CX_CTRL_MASTER_MODE_M1RW |
|
|
COH901318_CX_CTRL_TCP_ENABLE |
|
|
COH901318_CX_CTRL_TC_IRQ_ENABLE |
|
|
COH901318_CX_CTRL_HSP_ENABLE |
|
|
COH901318_CX_CTRL_HSS_DISABLE |
|
|
COH901318_CX_CTRL_DDMA_LEGACY,
|
|
.param.ctrl_lli_last = 0 |
|
|
COH901318_CX_CTRL_TC_ENABLE |
|
|
COH901318_CX_CTRL_MASTER_MODE_M1RW |
|
|
COH901318_CX_CTRL_TCP_ENABLE |
|
|
COH901318_CX_CTRL_TC_IRQ_ENABLE |
|
|
COH901318_CX_CTRL_HSP_ENABLE |
|
|
COH901318_CX_CTRL_HSS_DISABLE |
|
|
COH901318_CX_CTRL_DDMA_LEGACY,
|
|
},
|
|
{
|
|
.number = U300_DMA_UART0_RX,
|
|
.name = "UART0 RX",
|
|
.priority_high = 0,
|
|
.param.config = COH901318_CX_CFG_CH_DISABLE |
|
|
COH901318_CX_CFG_LCR_DISABLE |
|
|
COH901318_CX_CFG_TC_IRQ_ENABLE |
|
|
COH901318_CX_CFG_BE_IRQ_ENABLE,
|
|
.param.ctrl_lli_chained = 0 |
|
|
COH901318_CX_CTRL_TC_ENABLE |
|
|
COH901318_CX_CTRL_MASTER_MODE_M1RW |
|
|
COH901318_CX_CTRL_TCP_ENABLE |
|
|
COH901318_CX_CTRL_TC_IRQ_DISABLE |
|
|
COH901318_CX_CTRL_HSP_ENABLE |
|
|
COH901318_CX_CTRL_HSS_DISABLE |
|
|
COH901318_CX_CTRL_DDMA_LEGACY,
|
|
.param.ctrl_lli = 0 |
|
|
COH901318_CX_CTRL_TC_ENABLE |
|
|
COH901318_CX_CTRL_MASTER_MODE_M1RW |
|
|
COH901318_CX_CTRL_TCP_ENABLE |
|
|
COH901318_CX_CTRL_TC_IRQ_ENABLE |
|
|
COH901318_CX_CTRL_HSP_ENABLE |
|
|
COH901318_CX_CTRL_HSS_DISABLE |
|
|
COH901318_CX_CTRL_DDMA_LEGACY,
|
|
.param.ctrl_lli_last = 0 |
|
|
COH901318_CX_CTRL_TC_ENABLE |
|
|
COH901318_CX_CTRL_MASTER_MODE_M1RW |
|
|
COH901318_CX_CTRL_TCP_ENABLE |
|
|
COH901318_CX_CTRL_TC_IRQ_ENABLE |
|
|
COH901318_CX_CTRL_HSP_ENABLE |
|
|
COH901318_CX_CTRL_HSS_DISABLE |
|
|
COH901318_CX_CTRL_DDMA_LEGACY,
|
|
},
|
|
{
|
|
.number = U300_DMA_APEX_TX,
|
|
.name = "APEX TX",
|
|
.priority_high = 0,
|
|
},
|
|
{
|
|
.number = U300_DMA_APEX_RX,
|
|
.name = "APEX RX",
|
|
.priority_high = 0,
|
|
},
|
|
{
|
|
.number = U300_DMA_PCM_I2S0_TX,
|
|
.name = "PCM I2S0 TX",
|
|
.priority_high = 1,
|
|
.param.config = COH901318_CX_CFG_CH_DISABLE |
|
|
COH901318_CX_CFG_LCR_DISABLE |
|
|
COH901318_CX_CFG_TC_IRQ_ENABLE |
|
|
COH901318_CX_CFG_BE_IRQ_ENABLE,
|
|
.param.ctrl_lli_chained = 0 |
|
|
COH901318_CX_CTRL_TC_ENABLE |
|
|
COH901318_CX_CTRL_BURST_COUNT_16_BYTES |
|
|
COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
|
|
COH901318_CX_CTRL_SRC_ADDR_INC_ENABLE |
|
|
COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
|
|
COH901318_CX_CTRL_DST_ADDR_INC_DISABLE |
|
|
COH901318_CX_CTRL_MASTER_MODE_M1RW |
|
|
COH901318_CX_CTRL_TCP_DISABLE |
|
|
COH901318_CX_CTRL_TC_IRQ_DISABLE |
|
|
COH901318_CX_CTRL_HSP_ENABLE |
|
|
COH901318_CX_CTRL_HSS_DISABLE |
|
|
COH901318_CX_CTRL_DDMA_LEGACY |
|
|
COH901318_CX_CTRL_PRDD_SOURCE,
|
|
.param.ctrl_lli = 0 |
|
|
COH901318_CX_CTRL_TC_ENABLE |
|
|
COH901318_CX_CTRL_BURST_COUNT_16_BYTES |
|
|
COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
|
|
COH901318_CX_CTRL_SRC_ADDR_INC_ENABLE |
|
|
COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
|
|
COH901318_CX_CTRL_DST_ADDR_INC_DISABLE |
|
|
COH901318_CX_CTRL_MASTER_MODE_M1RW |
|
|
COH901318_CX_CTRL_TCP_ENABLE |
|
|
COH901318_CX_CTRL_TC_IRQ_DISABLE |
|
|
COH901318_CX_CTRL_HSP_ENABLE |
|
|
COH901318_CX_CTRL_HSS_DISABLE |
|
|
COH901318_CX_CTRL_DDMA_LEGACY |
|
|
COH901318_CX_CTRL_PRDD_SOURCE,
|
|
.param.ctrl_lli_last = 0 |
|
|
COH901318_CX_CTRL_TC_ENABLE |
|
|
COH901318_CX_CTRL_BURST_COUNT_16_BYTES |
|
|
COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
|
|
COH901318_CX_CTRL_SRC_ADDR_INC_ENABLE |
|
|
COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
|
|
COH901318_CX_CTRL_DST_ADDR_INC_DISABLE |
|
|
COH901318_CX_CTRL_MASTER_MODE_M1RW |
|
|
COH901318_CX_CTRL_TCP_ENABLE |
|
|
COH901318_CX_CTRL_TC_IRQ_DISABLE |
|
|
COH901318_CX_CTRL_HSP_ENABLE |
|
|
COH901318_CX_CTRL_HSS_DISABLE |
|
|
COH901318_CX_CTRL_DDMA_LEGACY |
|
|
COH901318_CX_CTRL_PRDD_SOURCE,
|
|
},
|
|
{
|
|
.number = U300_DMA_PCM_I2S0_RX,
|
|
.name = "PCM I2S0 RX",
|
|
.priority_high = 1,
|
|
.param.config = COH901318_CX_CFG_CH_DISABLE |
|
|
COH901318_CX_CFG_LCR_DISABLE |
|
|
COH901318_CX_CFG_TC_IRQ_ENABLE |
|
|
COH901318_CX_CFG_BE_IRQ_ENABLE,
|
|
.param.ctrl_lli_chained = 0 |
|
|
COH901318_CX_CTRL_TC_ENABLE |
|
|
COH901318_CX_CTRL_BURST_COUNT_16_BYTES |
|
|
COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
|
|
COH901318_CX_CTRL_SRC_ADDR_INC_DISABLE |
|
|
COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
|
|
COH901318_CX_CTRL_DST_ADDR_INC_ENABLE |
|
|
COH901318_CX_CTRL_MASTER_MODE_M1RW |
|
|
COH901318_CX_CTRL_TCP_DISABLE |
|
|
COH901318_CX_CTRL_TC_IRQ_DISABLE |
|
|
COH901318_CX_CTRL_HSP_ENABLE |
|
|
COH901318_CX_CTRL_HSS_DISABLE |
|
|
COH901318_CX_CTRL_DDMA_LEGACY |
|
|
COH901318_CX_CTRL_PRDD_DEST,
|
|
.param.ctrl_lli = 0 |
|
|
COH901318_CX_CTRL_TC_ENABLE |
|
|
COH901318_CX_CTRL_BURST_COUNT_16_BYTES |
|
|
COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
|
|
COH901318_CX_CTRL_SRC_ADDR_INC_DISABLE |
|
|
COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
|
|
COH901318_CX_CTRL_DST_ADDR_INC_ENABLE |
|
|
COH901318_CX_CTRL_MASTER_MODE_M1RW |
|
|
COH901318_CX_CTRL_TCP_ENABLE |
|
|
COH901318_CX_CTRL_TC_IRQ_DISABLE |
|
|
COH901318_CX_CTRL_HSP_ENABLE |
|
|
COH901318_CX_CTRL_HSS_DISABLE |
|
|
COH901318_CX_CTRL_DDMA_LEGACY |
|
|
COH901318_CX_CTRL_PRDD_DEST,
|
|
.param.ctrl_lli_last = 0 |
|
|
COH901318_CX_CTRL_TC_ENABLE |
|
|
COH901318_CX_CTRL_BURST_COUNT_16_BYTES |
|
|
COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
|
|
COH901318_CX_CTRL_SRC_ADDR_INC_DISABLE |
|
|
COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
|
|
COH901318_CX_CTRL_DST_ADDR_INC_ENABLE |
|
|
COH901318_CX_CTRL_MASTER_MODE_M1RW |
|
|
COH901318_CX_CTRL_TCP_ENABLE |
|
|
COH901318_CX_CTRL_TC_IRQ_ENABLE |
|
|
COH901318_CX_CTRL_HSP_ENABLE |
|
|
COH901318_CX_CTRL_HSS_DISABLE |
|
|
COH901318_CX_CTRL_DDMA_LEGACY |
|
|
COH901318_CX_CTRL_PRDD_DEST,
|
|
},
|
|
{
|
|
.number = U300_DMA_PCM_I2S1_TX,
|
|
.name = "PCM I2S1 TX",
|
|
.priority_high = 1,
|
|
.param.config = COH901318_CX_CFG_CH_DISABLE |
|
|
COH901318_CX_CFG_LCR_DISABLE |
|
|
COH901318_CX_CFG_TC_IRQ_ENABLE |
|
|
COH901318_CX_CFG_BE_IRQ_ENABLE,
|
|
.param.ctrl_lli_chained = 0 |
|
|
COH901318_CX_CTRL_TC_ENABLE |
|
|
COH901318_CX_CTRL_BURST_COUNT_16_BYTES |
|
|
COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
|
|
COH901318_CX_CTRL_SRC_ADDR_INC_ENABLE |
|
|
COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
|
|
COH901318_CX_CTRL_DST_ADDR_INC_DISABLE |
|
|
COH901318_CX_CTRL_MASTER_MODE_M1RW |
|
|
COH901318_CX_CTRL_TCP_DISABLE |
|
|
COH901318_CX_CTRL_TC_IRQ_DISABLE |
|
|
COH901318_CX_CTRL_HSP_ENABLE |
|
|
COH901318_CX_CTRL_HSS_DISABLE |
|
|
COH901318_CX_CTRL_DDMA_LEGACY |
|
|
COH901318_CX_CTRL_PRDD_SOURCE,
|
|
.param.ctrl_lli = 0 |
|
|
COH901318_CX_CTRL_TC_ENABLE |
|
|
COH901318_CX_CTRL_BURST_COUNT_16_BYTES |
|
|
COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
|
|
COH901318_CX_CTRL_SRC_ADDR_INC_ENABLE |
|
|
COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
|
|
COH901318_CX_CTRL_DST_ADDR_INC_DISABLE |
|
|
COH901318_CX_CTRL_MASTER_MODE_M1RW |
|
|
COH901318_CX_CTRL_TCP_ENABLE |
|
|
COH901318_CX_CTRL_TC_IRQ_DISABLE |
|
|
COH901318_CX_CTRL_HSP_ENABLE |
|
|
COH901318_CX_CTRL_HSS_DISABLE |
|
|
COH901318_CX_CTRL_DDMA_LEGACY |
|
|
COH901318_CX_CTRL_PRDD_SOURCE,
|
|
.param.ctrl_lli_last = 0 |
|
|
COH901318_CX_CTRL_TC_ENABLE |
|
|
COH901318_CX_CTRL_BURST_COUNT_16_BYTES |
|
|
COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
|
|
COH901318_CX_CTRL_SRC_ADDR_INC_ENABLE |
|
|
COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
|
|
COH901318_CX_CTRL_DST_ADDR_INC_DISABLE |
|
|
COH901318_CX_CTRL_MASTER_MODE_M1RW |
|
|
COH901318_CX_CTRL_TCP_ENABLE |
|
|
COH901318_CX_CTRL_TC_IRQ_ENABLE |
|
|
COH901318_CX_CTRL_HSP_ENABLE |
|
|
COH901318_CX_CTRL_HSS_DISABLE |
|
|
COH901318_CX_CTRL_DDMA_LEGACY |
|
|
COH901318_CX_CTRL_PRDD_SOURCE,
|
|
},
|
|
{
|
|
.number = U300_DMA_PCM_I2S1_RX,
|
|
.name = "PCM I2S1 RX",
|
|
.priority_high = 1,
|
|
.param.config = COH901318_CX_CFG_CH_DISABLE |
|
|
COH901318_CX_CFG_LCR_DISABLE |
|
|
COH901318_CX_CFG_TC_IRQ_ENABLE |
|
|
COH901318_CX_CFG_BE_IRQ_ENABLE,
|
|
.param.ctrl_lli_chained = 0 |
|
|
COH901318_CX_CTRL_TC_ENABLE |
|
|
COH901318_CX_CTRL_BURST_COUNT_16_BYTES |
|
|
COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
|
|
COH901318_CX_CTRL_SRC_ADDR_INC_DISABLE |
|
|
COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
|
|
COH901318_CX_CTRL_DST_ADDR_INC_ENABLE |
|
|
COH901318_CX_CTRL_MASTER_MODE_M1RW |
|
|
COH901318_CX_CTRL_TCP_DISABLE |
|
|
COH901318_CX_CTRL_TC_IRQ_DISABLE |
|
|
COH901318_CX_CTRL_HSP_ENABLE |
|
|
COH901318_CX_CTRL_HSS_DISABLE |
|
|
COH901318_CX_CTRL_DDMA_LEGACY |
|
|
COH901318_CX_CTRL_PRDD_DEST,
|
|
.param.ctrl_lli = 0 |
|
|
COH901318_CX_CTRL_TC_ENABLE |
|
|
COH901318_CX_CTRL_BURST_COUNT_16_BYTES |
|
|
COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
|
|
COH901318_CX_CTRL_SRC_ADDR_INC_DISABLE |
|
|
COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
|
|
COH901318_CX_CTRL_DST_ADDR_INC_ENABLE |
|
|
COH901318_CX_CTRL_MASTER_MODE_M1RW |
|
|
COH901318_CX_CTRL_TCP_ENABLE |
|
|
COH901318_CX_CTRL_TC_IRQ_DISABLE |
|
|
COH901318_CX_CTRL_HSP_ENABLE |
|
|
COH901318_CX_CTRL_HSS_DISABLE |
|
|
COH901318_CX_CTRL_DDMA_LEGACY |
|
|
COH901318_CX_CTRL_PRDD_DEST,
|
|
.param.ctrl_lli_last = 0 |
|
|
COH901318_CX_CTRL_TC_ENABLE |
|
|
COH901318_CX_CTRL_BURST_COUNT_16_BYTES |
|
|
COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
|
|
COH901318_CX_CTRL_SRC_ADDR_INC_DISABLE |
|
|
COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
|
|
COH901318_CX_CTRL_DST_ADDR_INC_ENABLE |
|
|
COH901318_CX_CTRL_MASTER_MODE_M1RW |
|
|
COH901318_CX_CTRL_TCP_ENABLE |
|
|
COH901318_CX_CTRL_TC_IRQ_ENABLE |
|
|
COH901318_CX_CTRL_HSP_ENABLE |
|
|
COH901318_CX_CTRL_HSS_DISABLE |
|
|
COH901318_CX_CTRL_DDMA_LEGACY |
|
|
COH901318_CX_CTRL_PRDD_DEST,
|
|
},
|
|
{
|
|
.number = U300_DMA_XGAM_CDI,
|
|
.name = "XGAM CDI",
|
|
.priority_high = 0,
|
|
},
|
|
{
|
|
.number = U300_DMA_XGAM_PDI,
|
|
.name = "XGAM PDI",
|
|
.priority_high = 0,
|
|
},
|
|
/*
|
|
* Don't set up device address, burst count or size of src
|
|
* or dst bus for this peripheral - handled by PrimeCell
|
|
* DMA extension.
|
|
*/
|
|
{
|
|
.number = U300_DMA_SPI_TX,
|
|
.name = "SPI TX",
|
|
.priority_high = 0,
|
|
.param.config = COH901318_CX_CFG_CH_DISABLE |
|
|
COH901318_CX_CFG_LCR_DISABLE |
|
|
COH901318_CX_CFG_TC_IRQ_ENABLE |
|
|
COH901318_CX_CFG_BE_IRQ_ENABLE,
|
|
.param.ctrl_lli_chained = 0 |
|
|
COH901318_CX_CTRL_TC_ENABLE |
|
|
COH901318_CX_CTRL_MASTER_MODE_M1RW |
|
|
COH901318_CX_CTRL_TCP_DISABLE |
|
|
COH901318_CX_CTRL_TC_IRQ_DISABLE |
|
|
COH901318_CX_CTRL_HSP_ENABLE |
|
|
COH901318_CX_CTRL_HSS_DISABLE |
|
|
COH901318_CX_CTRL_DDMA_LEGACY,
|
|
.param.ctrl_lli = 0 |
|
|
COH901318_CX_CTRL_TC_ENABLE |
|
|
COH901318_CX_CTRL_MASTER_MODE_M1RW |
|
|
COH901318_CX_CTRL_TCP_DISABLE |
|
|
COH901318_CX_CTRL_TC_IRQ_ENABLE |
|
|
COH901318_CX_CTRL_HSP_ENABLE |
|
|
COH901318_CX_CTRL_HSS_DISABLE |
|
|
COH901318_CX_CTRL_DDMA_LEGACY,
|
|
.param.ctrl_lli_last = 0 |
|
|
COH901318_CX_CTRL_TC_ENABLE |
|
|
COH901318_CX_CTRL_MASTER_MODE_M1RW |
|
|
COH901318_CX_CTRL_TCP_DISABLE |
|
|
COH901318_CX_CTRL_TC_IRQ_ENABLE |
|
|
COH901318_CX_CTRL_HSP_ENABLE |
|
|
COH901318_CX_CTRL_HSS_DISABLE |
|
|
COH901318_CX_CTRL_DDMA_LEGACY,
|
|
},
|
|
{
|
|
.number = U300_DMA_SPI_RX,
|
|
.name = "SPI RX",
|
|
.priority_high = 0,
|
|
.param.config = COH901318_CX_CFG_CH_DISABLE |
|
|
COH901318_CX_CFG_LCR_DISABLE |
|
|
COH901318_CX_CFG_TC_IRQ_ENABLE |
|
|
COH901318_CX_CFG_BE_IRQ_ENABLE,
|
|
.param.ctrl_lli_chained = 0 |
|
|
COH901318_CX_CTRL_TC_ENABLE |
|
|
COH901318_CX_CTRL_MASTER_MODE_M1RW |
|
|
COH901318_CX_CTRL_TCP_DISABLE |
|
|
COH901318_CX_CTRL_TC_IRQ_DISABLE |
|
|
COH901318_CX_CTRL_HSP_ENABLE |
|
|
COH901318_CX_CTRL_HSS_DISABLE |
|
|
COH901318_CX_CTRL_DDMA_LEGACY,
|
|
.param.ctrl_lli = 0 |
|
|
COH901318_CX_CTRL_TC_ENABLE |
|
|
COH901318_CX_CTRL_MASTER_MODE_M1RW |
|
|
COH901318_CX_CTRL_TCP_DISABLE |
|
|
COH901318_CX_CTRL_TC_IRQ_ENABLE |
|
|
COH901318_CX_CTRL_HSP_ENABLE |
|
|
COH901318_CX_CTRL_HSS_DISABLE |
|
|
COH901318_CX_CTRL_DDMA_LEGACY,
|
|
.param.ctrl_lli_last = 0 |
|
|
COH901318_CX_CTRL_TC_ENABLE |
|
|
COH901318_CX_CTRL_MASTER_MODE_M1RW |
|
|
COH901318_CX_CTRL_TCP_DISABLE |
|
|
COH901318_CX_CTRL_TC_IRQ_ENABLE |
|
|
COH901318_CX_CTRL_HSP_ENABLE |
|
|
COH901318_CX_CTRL_HSS_DISABLE |
|
|
COH901318_CX_CTRL_DDMA_LEGACY,
|
|
|
|
},
|
|
{
|
|
.number = U300_DMA_GENERAL_PURPOSE_0,
|
|
.name = "GENERAL 00",
|
|
.priority_high = 0,
|
|
|
|
.param.config = flags_memcpy_config,
|
|
.param.ctrl_lli_chained = flags_memcpy_lli_chained,
|
|
.param.ctrl_lli = flags_memcpy_lli,
|
|
.param.ctrl_lli_last = flags_memcpy_lli_last,
|
|
},
|
|
{
|
|
.number = U300_DMA_GENERAL_PURPOSE_1,
|
|
.name = "GENERAL 01",
|
|
.priority_high = 0,
|
|
|
|
.param.config = flags_memcpy_config,
|
|
.param.ctrl_lli_chained = flags_memcpy_lli_chained,
|
|
.param.ctrl_lli = flags_memcpy_lli,
|
|
.param.ctrl_lli_last = flags_memcpy_lli_last,
|
|
},
|
|
{
|
|
.number = U300_DMA_GENERAL_PURPOSE_2,
|
|
.name = "GENERAL 02",
|
|
.priority_high = 0,
|
|
|
|
.param.config = flags_memcpy_config,
|
|
.param.ctrl_lli_chained = flags_memcpy_lli_chained,
|
|
.param.ctrl_lli = flags_memcpy_lli,
|
|
.param.ctrl_lli_last = flags_memcpy_lli_last,
|
|
},
|
|
{
|
|
.number = U300_DMA_GENERAL_PURPOSE_3,
|
|
.name = "GENERAL 03",
|
|
.priority_high = 0,
|
|
|
|
.param.config = flags_memcpy_config,
|
|
.param.ctrl_lli_chained = flags_memcpy_lli_chained,
|
|
.param.ctrl_lli = flags_memcpy_lli,
|
|
.param.ctrl_lli_last = flags_memcpy_lli_last,
|
|
},
|
|
{
|
|
.number = U300_DMA_GENERAL_PURPOSE_4,
|
|
.name = "GENERAL 04",
|
|
.priority_high = 0,
|
|
|
|
.param.config = flags_memcpy_config,
|
|
.param.ctrl_lli_chained = flags_memcpy_lli_chained,
|
|
.param.ctrl_lli = flags_memcpy_lli,
|
|
.param.ctrl_lli_last = flags_memcpy_lli_last,
|
|
},
|
|
{
|
|
.number = U300_DMA_GENERAL_PURPOSE_5,
|
|
.name = "GENERAL 05",
|
|
.priority_high = 0,
|
|
|
|
.param.config = flags_memcpy_config,
|
|
.param.ctrl_lli_chained = flags_memcpy_lli_chained,
|
|
.param.ctrl_lli = flags_memcpy_lli,
|
|
.param.ctrl_lli_last = flags_memcpy_lli_last,
|
|
},
|
|
{
|
|
.number = U300_DMA_GENERAL_PURPOSE_6,
|
|
.name = "GENERAL 06",
|
|
.priority_high = 0,
|
|
|
|
.param.config = flags_memcpy_config,
|
|
.param.ctrl_lli_chained = flags_memcpy_lli_chained,
|
|
.param.ctrl_lli = flags_memcpy_lli,
|
|
.param.ctrl_lli_last = flags_memcpy_lli_last,
|
|
},
|
|
{
|
|
.number = U300_DMA_GENERAL_PURPOSE_7,
|
|
.name = "GENERAL 07",
|
|
.priority_high = 0,
|
|
|
|
.param.config = flags_memcpy_config,
|
|
.param.ctrl_lli_chained = flags_memcpy_lli_chained,
|
|
.param.ctrl_lli = flags_memcpy_lli,
|
|
.param.ctrl_lli_last = flags_memcpy_lli_last,
|
|
},
|
|
{
|
|
.number = U300_DMA_GENERAL_PURPOSE_8,
|
|
.name = "GENERAL 08",
|
|
.priority_high = 0,
|
|
|
|
.param.config = flags_memcpy_config,
|
|
.param.ctrl_lli_chained = flags_memcpy_lli_chained,
|
|
.param.ctrl_lli = flags_memcpy_lli,
|
|
.param.ctrl_lli_last = flags_memcpy_lli_last,
|
|
},
|
|
{
|
|
.number = U300_DMA_UART1_TX,
|
|
.name = "UART1 TX",
|
|
.priority_high = 0,
|
|
},
|
|
{
|
|
.number = U300_DMA_UART1_RX,
|
|
.name = "UART1 RX",
|
|
.priority_high = 0,
|
|
}
|
|
};
|
|
|
|
#define COHC_2_DEV(cohc) (&cohc->chan.dev->device)
|
|
|
|
#ifdef VERBOSE_DEBUG
|
|
#define COH_DBG(x) ({ if (1) x; 0; })
|
|
#else
|
|
#define COH_DBG(x) ({ if (0) x; 0; })
|
|
#endif
|
|
|
|
struct coh901318_desc {
|
|
struct dma_async_tx_descriptor desc;
|
|
struct list_head node;
|
|
struct scatterlist *sg;
|
|
unsigned int sg_len;
|
|
struct coh901318_lli *lli;
|
|
enum dma_transfer_direction dir;
|
|
unsigned long flags;
|
|
u32 head_config;
|
|
u32 head_ctrl;
|
|
};
|
|
|
|
struct coh901318_base {
|
|
struct device *dev;
|
|
void __iomem *virtbase;
|
|
struct coh901318_pool pool;
|
|
struct powersave pm;
|
|
struct dma_device dma_slave;
|
|
struct dma_device dma_memcpy;
|
|
struct coh901318_chan *chans;
|
|
};
|
|
|
|
struct coh901318_chan {
|
|
spinlock_t lock;
|
|
int allocated;
|
|
int id;
|
|
int stopped;
|
|
|
|
struct work_struct free_work;
|
|
struct dma_chan chan;
|
|
|
|
struct tasklet_struct tasklet;
|
|
|
|
struct list_head active;
|
|
struct list_head queue;
|
|
struct list_head free;
|
|
|
|
unsigned long nbr_active_done;
|
|
unsigned long busy;
|
|
|
|
u32 addr;
|
|
u32 ctrl;
|
|
|
|
struct coh901318_base *base;
|
|
};
|
|
|
|
static void coh901318_list_print(struct coh901318_chan *cohc,
|
|
struct coh901318_lli *lli)
|
|
{
|
|
struct coh901318_lli *l = lli;
|
|
int i = 0;
|
|
|
|
while (l) {
|
|
dev_vdbg(COHC_2_DEV(cohc), "i %d, lli %p, ctrl 0x%x, src 0x%x"
|
|
", dst 0x%x, link 0x%x virt_link_addr 0x%p\n",
|
|
i, l, l->control, l->src_addr, l->dst_addr,
|
|
l->link_addr, l->virt_link_addr);
|
|
i++;
|
|
l = l->virt_link_addr;
|
|
}
|
|
}
|
|
|
|
#ifdef CONFIG_DEBUG_FS
|
|
|
|
#define COH901318_DEBUGFS_ASSIGN(x, y) (x = y)
|
|
|
|
static struct coh901318_base *debugfs_dma_base;
|
|
static struct dentry *dma_dentry;
|
|
|
|
static int coh901318_debugfs_read(struct file *file, char __user *buf,
|
|
size_t count, loff_t *f_pos)
|
|
{
|
|
u64 started_channels = debugfs_dma_base->pm.started_channels;
|
|
int pool_count = debugfs_dma_base->pool.debugfs_pool_counter;
|
|
char *dev_buf;
|
|
char *tmp;
|
|
int ret;
|
|
int i;
|
|
|
|
dev_buf = kmalloc(4*1024, GFP_KERNEL);
|
|
if (dev_buf == NULL)
|
|
return -ENOMEM;
|
|
tmp = dev_buf;
|
|
|
|
tmp += sprintf(tmp, "DMA -- enabled dma channels\n");
|
|
|
|
for (i = 0; i < U300_DMA_CHANNELS; i++)
|
|
if (started_channels & (1 << i))
|
|
tmp += sprintf(tmp, "channel %d\n", i);
|
|
|
|
tmp += sprintf(tmp, "Pool alloc nbr %d\n", pool_count);
|
|
|
|
ret = simple_read_from_buffer(buf, count, f_pos, dev_buf,
|
|
tmp - dev_buf);
|
|
kfree(dev_buf);
|
|
return ret;
|
|
}
|
|
|
|
static const struct file_operations coh901318_debugfs_status_operations = {
|
|
.owner = THIS_MODULE,
|
|
.open = simple_open,
|
|
.read = coh901318_debugfs_read,
|
|
.llseek = default_llseek,
|
|
};
|
|
|
|
|
|
static int __init init_coh901318_debugfs(void)
|
|
{
|
|
|
|
dma_dentry = debugfs_create_dir("dma", NULL);
|
|
|
|
(void) debugfs_create_file("status",
|
|
S_IFREG | S_IRUGO,
|
|
dma_dentry, NULL,
|
|
&coh901318_debugfs_status_operations);
|
|
return 0;
|
|
}
|
|
|
|
static void __exit exit_coh901318_debugfs(void)
|
|
{
|
|
debugfs_remove_recursive(dma_dentry);
|
|
}
|
|
|
|
module_init(init_coh901318_debugfs);
|
|
module_exit(exit_coh901318_debugfs);
|
|
#else
|
|
|
|
#define COH901318_DEBUGFS_ASSIGN(x, y)
|
|
|
|
#endif /* CONFIG_DEBUG_FS */
|
|
|
|
static inline struct coh901318_chan *to_coh901318_chan(struct dma_chan *chan)
|
|
{
|
|
return container_of(chan, struct coh901318_chan, chan);
|
|
}
|
|
|
|
static inline const struct coh901318_params *
|
|
cohc_chan_param(struct coh901318_chan *cohc)
|
|
{
|
|
return &chan_config[cohc->id].param;
|
|
}
|
|
|
|
static inline const struct coh_dma_channel *
|
|
cohc_chan_conf(struct coh901318_chan *cohc)
|
|
{
|
|
return &chan_config[cohc->id];
|
|
}
|
|
|
|
static void enable_powersave(struct coh901318_chan *cohc)
|
|
{
|
|
unsigned long flags;
|
|
struct powersave *pm = &cohc->base->pm;
|
|
|
|
spin_lock_irqsave(&pm->lock, flags);
|
|
|
|
pm->started_channels &= ~(1ULL << cohc->id);
|
|
|
|
spin_unlock_irqrestore(&pm->lock, flags);
|
|
}
|
|
static void disable_powersave(struct coh901318_chan *cohc)
|
|
{
|
|
unsigned long flags;
|
|
struct powersave *pm = &cohc->base->pm;
|
|
|
|
spin_lock_irqsave(&pm->lock, flags);
|
|
|
|
pm->started_channels |= (1ULL << cohc->id);
|
|
|
|
spin_unlock_irqrestore(&pm->lock, flags);
|
|
}
|
|
|
|
static inline int coh901318_set_ctrl(struct coh901318_chan *cohc, u32 control)
|
|
{
|
|
int channel = cohc->id;
|
|
void __iomem *virtbase = cohc->base->virtbase;
|
|
|
|
writel(control,
|
|
virtbase + COH901318_CX_CTRL +
|
|
COH901318_CX_CTRL_SPACING * channel);
|
|
return 0;
|
|
}
|
|
|
|
static inline int coh901318_set_conf(struct coh901318_chan *cohc, u32 conf)
|
|
{
|
|
int channel = cohc->id;
|
|
void __iomem *virtbase = cohc->base->virtbase;
|
|
|
|
writel(conf,
|
|
virtbase + COH901318_CX_CFG +
|
|
COH901318_CX_CFG_SPACING*channel);
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int coh901318_start(struct coh901318_chan *cohc)
|
|
{
|
|
u32 val;
|
|
int channel = cohc->id;
|
|
void __iomem *virtbase = cohc->base->virtbase;
|
|
|
|
disable_powersave(cohc);
|
|
|
|
val = readl(virtbase + COH901318_CX_CFG +
|
|
COH901318_CX_CFG_SPACING * channel);
|
|
|
|
/* Enable channel */
|
|
val |= COH901318_CX_CFG_CH_ENABLE;
|
|
writel(val, virtbase + COH901318_CX_CFG +
|
|
COH901318_CX_CFG_SPACING * channel);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int coh901318_prep_linked_list(struct coh901318_chan *cohc,
|
|
struct coh901318_lli *lli)
|
|
{
|
|
int channel = cohc->id;
|
|
void __iomem *virtbase = cohc->base->virtbase;
|
|
|
|
BUG_ON(readl(virtbase + COH901318_CX_STAT +
|
|
COH901318_CX_STAT_SPACING*channel) &
|
|
COH901318_CX_STAT_ACTIVE);
|
|
|
|
writel(lli->src_addr,
|
|
virtbase + COH901318_CX_SRC_ADDR +
|
|
COH901318_CX_SRC_ADDR_SPACING * channel);
|
|
|
|
writel(lli->dst_addr, virtbase +
|
|
COH901318_CX_DST_ADDR +
|
|
COH901318_CX_DST_ADDR_SPACING * channel);
|
|
|
|
writel(lli->link_addr, virtbase + COH901318_CX_LNK_ADDR +
|
|
COH901318_CX_LNK_ADDR_SPACING * channel);
|
|
|
|
writel(lli->control, virtbase + COH901318_CX_CTRL +
|
|
COH901318_CX_CTRL_SPACING * channel);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct coh901318_desc *
|
|
coh901318_desc_get(struct coh901318_chan *cohc)
|
|
{
|
|
struct coh901318_desc *desc;
|
|
|
|
if (list_empty(&cohc->free)) {
|
|
/* alloc new desc because we're out of used ones
|
|
* TODO: alloc a pile of descs instead of just one,
|
|
* avoid many small allocations.
|
|
*/
|
|
desc = kzalloc(sizeof(struct coh901318_desc), GFP_NOWAIT);
|
|
if (desc == NULL)
|
|
goto out;
|
|
INIT_LIST_HEAD(&desc->node);
|
|
dma_async_tx_descriptor_init(&desc->desc, &cohc->chan);
|
|
} else {
|
|
/* Reuse an old desc. */
|
|
desc = list_first_entry(&cohc->free,
|
|
struct coh901318_desc,
|
|
node);
|
|
list_del(&desc->node);
|
|
/* Initialize it a bit so it's not insane */
|
|
desc->sg = NULL;
|
|
desc->sg_len = 0;
|
|
desc->desc.callback = NULL;
|
|
desc->desc.callback_param = NULL;
|
|
}
|
|
|
|
out:
|
|
return desc;
|
|
}
|
|
|
|
static void
|
|
coh901318_desc_free(struct coh901318_chan *cohc, struct coh901318_desc *cohd)
|
|
{
|
|
list_add_tail(&cohd->node, &cohc->free);
|
|
}
|
|
|
|
/* call with irq lock held */
|
|
static void
|
|
coh901318_desc_submit(struct coh901318_chan *cohc, struct coh901318_desc *desc)
|
|
{
|
|
list_add_tail(&desc->node, &cohc->active);
|
|
}
|
|
|
|
static struct coh901318_desc *
|
|
coh901318_first_active_get(struct coh901318_chan *cohc)
|
|
{
|
|
struct coh901318_desc *d;
|
|
|
|
if (list_empty(&cohc->active))
|
|
return NULL;
|
|
|
|
d = list_first_entry(&cohc->active,
|
|
struct coh901318_desc,
|
|
node);
|
|
return d;
|
|
}
|
|
|
|
static void
|
|
coh901318_desc_remove(struct coh901318_desc *cohd)
|
|
{
|
|
list_del(&cohd->node);
|
|
}
|
|
|
|
static void
|
|
coh901318_desc_queue(struct coh901318_chan *cohc, struct coh901318_desc *desc)
|
|
{
|
|
list_add_tail(&desc->node, &cohc->queue);
|
|
}
|
|
|
|
static struct coh901318_desc *
|
|
coh901318_first_queued(struct coh901318_chan *cohc)
|
|
{
|
|
struct coh901318_desc *d;
|
|
|
|
if (list_empty(&cohc->queue))
|
|
return NULL;
|
|
|
|
d = list_first_entry(&cohc->queue,
|
|
struct coh901318_desc,
|
|
node);
|
|
return d;
|
|
}
|
|
|
|
static inline u32 coh901318_get_bytes_in_lli(struct coh901318_lli *in_lli)
|
|
{
|
|
struct coh901318_lli *lli = in_lli;
|
|
u32 bytes = 0;
|
|
|
|
while (lli) {
|
|
bytes += lli->control & COH901318_CX_CTRL_TC_VALUE_MASK;
|
|
lli = lli->virt_link_addr;
|
|
}
|
|
return bytes;
|
|
}
|
|
|
|
/*
|
|
* Get the number of bytes left to transfer on this channel,
|
|
* it is unwise to call this before stopping the channel for
|
|
* absolute measures, but for a rough guess you can still call
|
|
* it.
|
|
*/
|
|
static u32 coh901318_get_bytes_left(struct dma_chan *chan)
|
|
{
|
|
struct coh901318_chan *cohc = to_coh901318_chan(chan);
|
|
struct coh901318_desc *cohd;
|
|
struct list_head *pos;
|
|
unsigned long flags;
|
|
u32 left = 0;
|
|
int i = 0;
|
|
|
|
spin_lock_irqsave(&cohc->lock, flags);
|
|
|
|
/*
|
|
* If there are many queued jobs, we iterate and add the
|
|
* size of them all. We take a special look on the first
|
|
* job though, since it is probably active.
|
|
*/
|
|
list_for_each(pos, &cohc->active) {
|
|
/*
|
|
* The first job in the list will be working on the
|
|
* hardware. The job can be stopped but still active,
|
|
* so that the transfer counter is somewhere inside
|
|
* the buffer.
|
|
*/
|
|
cohd = list_entry(pos, struct coh901318_desc, node);
|
|
|
|
if (i == 0) {
|
|
struct coh901318_lli *lli;
|
|
dma_addr_t ladd;
|
|
|
|
/* Read current transfer count value */
|
|
left = readl(cohc->base->virtbase +
|
|
COH901318_CX_CTRL +
|
|
COH901318_CX_CTRL_SPACING * cohc->id) &
|
|
COH901318_CX_CTRL_TC_VALUE_MASK;
|
|
|
|
/* See if the transfer is linked... */
|
|
ladd = readl(cohc->base->virtbase +
|
|
COH901318_CX_LNK_ADDR +
|
|
COH901318_CX_LNK_ADDR_SPACING *
|
|
cohc->id) &
|
|
~COH901318_CX_LNK_LINK_IMMEDIATE;
|
|
/* Single transaction */
|
|
if (!ladd)
|
|
continue;
|
|
|
|
/*
|
|
* Linked transaction, follow the lli, find the
|
|
* currently processing lli, and proceed to the next
|
|
*/
|
|
lli = cohd->lli;
|
|
while (lli && lli->link_addr != ladd)
|
|
lli = lli->virt_link_addr;
|
|
|
|
if (lli)
|
|
lli = lli->virt_link_addr;
|
|
|
|
/*
|
|
* Follow remaining lli links around to count the total
|
|
* number of bytes left
|
|
*/
|
|
left += coh901318_get_bytes_in_lli(lli);
|
|
} else {
|
|
left += coh901318_get_bytes_in_lli(cohd->lli);
|
|
}
|
|
i++;
|
|
}
|
|
|
|
/* Also count bytes in the queued jobs */
|
|
list_for_each(pos, &cohc->queue) {
|
|
cohd = list_entry(pos, struct coh901318_desc, node);
|
|
left += coh901318_get_bytes_in_lli(cohd->lli);
|
|
}
|
|
|
|
spin_unlock_irqrestore(&cohc->lock, flags);
|
|
|
|
return left;
|
|
}
|
|
|
|
/*
|
|
* Pauses a transfer without losing data. Enables power save.
|
|
* Use this function in conjunction with coh901318_resume.
|
|
*/
|
|
static void coh901318_pause(struct dma_chan *chan)
|
|
{
|
|
u32 val;
|
|
unsigned long flags;
|
|
struct coh901318_chan *cohc = to_coh901318_chan(chan);
|
|
int channel = cohc->id;
|
|
void __iomem *virtbase = cohc->base->virtbase;
|
|
|
|
spin_lock_irqsave(&cohc->lock, flags);
|
|
|
|
/* Disable channel in HW */
|
|
val = readl(virtbase + COH901318_CX_CFG +
|
|
COH901318_CX_CFG_SPACING * channel);
|
|
|
|
/* Stopping infinite transfer */
|
|
if ((val & COH901318_CX_CTRL_TC_ENABLE) == 0 &&
|
|
(val & COH901318_CX_CFG_CH_ENABLE))
|
|
cohc->stopped = 1;
|
|
|
|
|
|
val &= ~COH901318_CX_CFG_CH_ENABLE;
|
|
/* Enable twice, HW bug work around */
|
|
writel(val, virtbase + COH901318_CX_CFG +
|
|
COH901318_CX_CFG_SPACING * channel);
|
|
writel(val, virtbase + COH901318_CX_CFG +
|
|
COH901318_CX_CFG_SPACING * channel);
|
|
|
|
/* Spin-wait for it to actually go inactive */
|
|
while (readl(virtbase + COH901318_CX_STAT+COH901318_CX_STAT_SPACING *
|
|
channel) & COH901318_CX_STAT_ACTIVE)
|
|
cpu_relax();
|
|
|
|
/* Check if we stopped an active job */
|
|
if ((readl(virtbase + COH901318_CX_CTRL+COH901318_CX_CTRL_SPACING *
|
|
channel) & COH901318_CX_CTRL_TC_VALUE_MASK) > 0)
|
|
cohc->stopped = 1;
|
|
|
|
enable_powersave(cohc);
|
|
|
|
spin_unlock_irqrestore(&cohc->lock, flags);
|
|
}
|
|
|
|
/* Resumes a transfer that has been stopped via 300_dma_stop(..).
|
|
Power save is handled.
|
|
*/
|
|
static void coh901318_resume(struct dma_chan *chan)
|
|
{
|
|
u32 val;
|
|
unsigned long flags;
|
|
struct coh901318_chan *cohc = to_coh901318_chan(chan);
|
|
int channel = cohc->id;
|
|
|
|
spin_lock_irqsave(&cohc->lock, flags);
|
|
|
|
disable_powersave(cohc);
|
|
|
|
if (cohc->stopped) {
|
|
/* Enable channel in HW */
|
|
val = readl(cohc->base->virtbase + COH901318_CX_CFG +
|
|
COH901318_CX_CFG_SPACING * channel);
|
|
|
|
val |= COH901318_CX_CFG_CH_ENABLE;
|
|
|
|
writel(val, cohc->base->virtbase + COH901318_CX_CFG +
|
|
COH901318_CX_CFG_SPACING*channel);
|
|
|
|
cohc->stopped = 0;
|
|
}
|
|
|
|
spin_unlock_irqrestore(&cohc->lock, flags);
|
|
}
|
|
|
|
bool coh901318_filter_id(struct dma_chan *chan, void *chan_id)
|
|
{
|
|
unsigned int ch_nr = (unsigned int) chan_id;
|
|
|
|
if (ch_nr == to_coh901318_chan(chan)->id)
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
EXPORT_SYMBOL(coh901318_filter_id);
|
|
|
|
struct coh901318_filter_args {
|
|
struct coh901318_base *base;
|
|
unsigned int ch_nr;
|
|
};
|
|
|
|
static bool coh901318_filter_base_and_id(struct dma_chan *chan, void *data)
|
|
{
|
|
struct coh901318_filter_args *args = data;
|
|
|
|
if (&args->base->dma_slave == chan->device &&
|
|
args->ch_nr == to_coh901318_chan(chan)->id)
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
|
|
static struct dma_chan *coh901318_xlate(struct of_phandle_args *dma_spec,
|
|
struct of_dma *ofdma)
|
|
{
|
|
struct coh901318_filter_args args = {
|
|
.base = ofdma->of_dma_data,
|
|
.ch_nr = dma_spec->args[0],
|
|
};
|
|
dma_cap_mask_t cap;
|
|
dma_cap_zero(cap);
|
|
dma_cap_set(DMA_SLAVE, cap);
|
|
|
|
return dma_request_channel(cap, coh901318_filter_base_and_id, &args);
|
|
}
|
|
/*
|
|
* DMA channel allocation
|
|
*/
|
|
static int coh901318_config(struct coh901318_chan *cohc,
|
|
struct coh901318_params *param)
|
|
{
|
|
unsigned long flags;
|
|
const struct coh901318_params *p;
|
|
int channel = cohc->id;
|
|
void __iomem *virtbase = cohc->base->virtbase;
|
|
|
|
spin_lock_irqsave(&cohc->lock, flags);
|
|
|
|
if (param)
|
|
p = param;
|
|
else
|
|
p = cohc_chan_param(cohc);
|
|
|
|
/* Clear any pending BE or TC interrupt */
|
|
if (channel < 32) {
|
|
writel(1 << channel, virtbase + COH901318_BE_INT_CLEAR1);
|
|
writel(1 << channel, virtbase + COH901318_TC_INT_CLEAR1);
|
|
} else {
|
|
writel(1 << (channel - 32), virtbase +
|
|
COH901318_BE_INT_CLEAR2);
|
|
writel(1 << (channel - 32), virtbase +
|
|
COH901318_TC_INT_CLEAR2);
|
|
}
|
|
|
|
coh901318_set_conf(cohc, p->config);
|
|
coh901318_set_ctrl(cohc, p->ctrl_lli_last);
|
|
|
|
spin_unlock_irqrestore(&cohc->lock, flags);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* must lock when calling this function
|
|
* start queued jobs, if any
|
|
* TODO: start all queued jobs in one go
|
|
*
|
|
* Returns descriptor if queued job is started otherwise NULL.
|
|
* If the queue is empty NULL is returned.
|
|
*/
|
|
static struct coh901318_desc *coh901318_queue_start(struct coh901318_chan *cohc)
|
|
{
|
|
struct coh901318_desc *cohd;
|
|
|
|
/*
|
|
* start queued jobs, if any
|
|
* TODO: transmit all queued jobs in one go
|
|
*/
|
|
cohd = coh901318_first_queued(cohc);
|
|
|
|
if (cohd != NULL) {
|
|
/* Remove from queue */
|
|
coh901318_desc_remove(cohd);
|
|
/* initiate DMA job */
|
|
cohc->busy = 1;
|
|
|
|
coh901318_desc_submit(cohc, cohd);
|
|
|
|
/* Program the transaction head */
|
|
coh901318_set_conf(cohc, cohd->head_config);
|
|
coh901318_set_ctrl(cohc, cohd->head_ctrl);
|
|
coh901318_prep_linked_list(cohc, cohd->lli);
|
|
|
|
/* start dma job on this channel */
|
|
coh901318_start(cohc);
|
|
|
|
}
|
|
|
|
return cohd;
|
|
}
|
|
|
|
/*
|
|
* This tasklet is called from the interrupt handler to
|
|
* handle each descriptor (DMA job) that is sent to a channel.
|
|
*/
|
|
static void dma_tasklet(unsigned long data)
|
|
{
|
|
struct coh901318_chan *cohc = (struct coh901318_chan *) data;
|
|
struct coh901318_desc *cohd_fin;
|
|
unsigned long flags;
|
|
dma_async_tx_callback callback;
|
|
void *callback_param;
|
|
|
|
dev_vdbg(COHC_2_DEV(cohc), "[%s] chan_id %d"
|
|
" nbr_active_done %ld\n", __func__,
|
|
cohc->id, cohc->nbr_active_done);
|
|
|
|
spin_lock_irqsave(&cohc->lock, flags);
|
|
|
|
/* get first active descriptor entry from list */
|
|
cohd_fin = coh901318_first_active_get(cohc);
|
|
|
|
if (cohd_fin == NULL)
|
|
goto err;
|
|
|
|
/* locate callback to client */
|
|
callback = cohd_fin->desc.callback;
|
|
callback_param = cohd_fin->desc.callback_param;
|
|
|
|
/* sign this job as completed on the channel */
|
|
dma_cookie_complete(&cohd_fin->desc);
|
|
|
|
/* release the lli allocation and remove the descriptor */
|
|
coh901318_lli_free(&cohc->base->pool, &cohd_fin->lli);
|
|
|
|
/* return desc to free-list */
|
|
coh901318_desc_remove(cohd_fin);
|
|
coh901318_desc_free(cohc, cohd_fin);
|
|
|
|
spin_unlock_irqrestore(&cohc->lock, flags);
|
|
|
|
/* Call the callback when we're done */
|
|
if (callback)
|
|
callback(callback_param);
|
|
|
|
spin_lock_irqsave(&cohc->lock, flags);
|
|
|
|
/*
|
|
* If another interrupt fired while the tasklet was scheduling,
|
|
* we don't get called twice, so we have this number of active
|
|
* counter that keep track of the number of IRQs expected to
|
|
* be handled for this channel. If there happen to be more than
|
|
* one IRQ to be ack:ed, we simply schedule this tasklet again.
|
|
*/
|
|
cohc->nbr_active_done--;
|
|
if (cohc->nbr_active_done) {
|
|
dev_dbg(COHC_2_DEV(cohc), "scheduling tasklet again, new IRQs "
|
|
"came in while we were scheduling this tasklet\n");
|
|
if (cohc_chan_conf(cohc)->priority_high)
|
|
tasklet_hi_schedule(&cohc->tasklet);
|
|
else
|
|
tasklet_schedule(&cohc->tasklet);
|
|
}
|
|
|
|
spin_unlock_irqrestore(&cohc->lock, flags);
|
|
|
|
return;
|
|
|
|
err:
|
|
spin_unlock_irqrestore(&cohc->lock, flags);
|
|
dev_err(COHC_2_DEV(cohc), "[%s] No active dma desc\n", __func__);
|
|
}
|
|
|
|
|
|
/* called from interrupt context */
|
|
static void dma_tc_handle(struct coh901318_chan *cohc)
|
|
{
|
|
/*
|
|
* If the channel is not allocated, then we shouldn't have
|
|
* any TC interrupts on it.
|
|
*/
|
|
if (!cohc->allocated) {
|
|
dev_err(COHC_2_DEV(cohc), "spurious interrupt from "
|
|
"unallocated channel\n");
|
|
return;
|
|
}
|
|
|
|
spin_lock(&cohc->lock);
|
|
|
|
/*
|
|
* When we reach this point, at least one queue item
|
|
* should have been moved over from cohc->queue to
|
|
* cohc->active and run to completion, that is why we're
|
|
* getting a terminal count interrupt is it not?
|
|
* If you get this BUG() the most probable cause is that
|
|
* the individual nodes in the lli chain have IRQ enabled,
|
|
* so check your platform config for lli chain ctrl.
|
|
*/
|
|
BUG_ON(list_empty(&cohc->active));
|
|
|
|
cohc->nbr_active_done++;
|
|
|
|
/*
|
|
* This attempt to take a job from cohc->queue, put it
|
|
* into cohc->active and start it.
|
|
*/
|
|
if (coh901318_queue_start(cohc) == NULL)
|
|
cohc->busy = 0;
|
|
|
|
spin_unlock(&cohc->lock);
|
|
|
|
/*
|
|
* This tasklet will remove items from cohc->active
|
|
* and thus terminates them.
|
|
*/
|
|
if (cohc_chan_conf(cohc)->priority_high)
|
|
tasklet_hi_schedule(&cohc->tasklet);
|
|
else
|
|
tasklet_schedule(&cohc->tasklet);
|
|
}
|
|
|
|
|
|
static irqreturn_t dma_irq_handler(int irq, void *dev_id)
|
|
{
|
|
u32 status1;
|
|
u32 status2;
|
|
int i;
|
|
int ch;
|
|
struct coh901318_base *base = dev_id;
|
|
struct coh901318_chan *cohc;
|
|
void __iomem *virtbase = base->virtbase;
|
|
|
|
status1 = readl(virtbase + COH901318_INT_STATUS1);
|
|
status2 = readl(virtbase + COH901318_INT_STATUS2);
|
|
|
|
if (unlikely(status1 == 0 && status2 == 0)) {
|
|
dev_warn(base->dev, "spurious DMA IRQ from no channel!\n");
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
/* TODO: consider handle IRQ in tasklet here to
|
|
* minimize interrupt latency */
|
|
|
|
/* Check the first 32 DMA channels for IRQ */
|
|
while (status1) {
|
|
/* Find first bit set, return as a number. */
|
|
i = ffs(status1) - 1;
|
|
ch = i;
|
|
|
|
cohc = &base->chans[ch];
|
|
spin_lock(&cohc->lock);
|
|
|
|
/* Mask off this bit */
|
|
status1 &= ~(1 << i);
|
|
/* Check the individual channel bits */
|
|
if (test_bit(i, virtbase + COH901318_BE_INT_STATUS1)) {
|
|
dev_crit(COHC_2_DEV(cohc),
|
|
"DMA bus error on channel %d!\n", ch);
|
|
BUG_ON(1);
|
|
/* Clear BE interrupt */
|
|
__set_bit(i, virtbase + COH901318_BE_INT_CLEAR1);
|
|
} else {
|
|
/* Caused by TC, really? */
|
|
if (unlikely(!test_bit(i, virtbase +
|
|
COH901318_TC_INT_STATUS1))) {
|
|
dev_warn(COHC_2_DEV(cohc),
|
|
"ignoring interrupt not caused by terminal count on channel %d\n", ch);
|
|
/* Clear TC interrupt */
|
|
BUG_ON(1);
|
|
__set_bit(i, virtbase + COH901318_TC_INT_CLEAR1);
|
|
} else {
|
|
/* Enable powersave if transfer has finished */
|
|
if (!(readl(virtbase + COH901318_CX_STAT +
|
|
COH901318_CX_STAT_SPACING*ch) &
|
|
COH901318_CX_STAT_ENABLED)) {
|
|
enable_powersave(cohc);
|
|
}
|
|
|
|
/* Must clear TC interrupt before calling
|
|
* dma_tc_handle
|
|
* in case tc_handle initiate a new dma job
|
|
*/
|
|
__set_bit(i, virtbase + COH901318_TC_INT_CLEAR1);
|
|
|
|
dma_tc_handle(cohc);
|
|
}
|
|
}
|
|
spin_unlock(&cohc->lock);
|
|
}
|
|
|
|
/* Check the remaining 32 DMA channels for IRQ */
|
|
while (status2) {
|
|
/* Find first bit set, return as a number. */
|
|
i = ffs(status2) - 1;
|
|
ch = i + 32;
|
|
cohc = &base->chans[ch];
|
|
spin_lock(&cohc->lock);
|
|
|
|
/* Mask off this bit */
|
|
status2 &= ~(1 << i);
|
|
/* Check the individual channel bits */
|
|
if (test_bit(i, virtbase + COH901318_BE_INT_STATUS2)) {
|
|
dev_crit(COHC_2_DEV(cohc),
|
|
"DMA bus error on channel %d!\n", ch);
|
|
/* Clear BE interrupt */
|
|
BUG_ON(1);
|
|
__set_bit(i, virtbase + COH901318_BE_INT_CLEAR2);
|
|
} else {
|
|
/* Caused by TC, really? */
|
|
if (unlikely(!test_bit(i, virtbase +
|
|
COH901318_TC_INT_STATUS2))) {
|
|
dev_warn(COHC_2_DEV(cohc),
|
|
"ignoring interrupt not caused by terminal count on channel %d\n", ch);
|
|
/* Clear TC interrupt */
|
|
__set_bit(i, virtbase + COH901318_TC_INT_CLEAR2);
|
|
BUG_ON(1);
|
|
} else {
|
|
/* Enable powersave if transfer has finished */
|
|
if (!(readl(virtbase + COH901318_CX_STAT +
|
|
COH901318_CX_STAT_SPACING*ch) &
|
|
COH901318_CX_STAT_ENABLED)) {
|
|
enable_powersave(cohc);
|
|
}
|
|
/* Must clear TC interrupt before calling
|
|
* dma_tc_handle
|
|
* in case tc_handle initiate a new dma job
|
|
*/
|
|
__set_bit(i, virtbase + COH901318_TC_INT_CLEAR2);
|
|
|
|
dma_tc_handle(cohc);
|
|
}
|
|
}
|
|
spin_unlock(&cohc->lock);
|
|
}
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static int coh901318_alloc_chan_resources(struct dma_chan *chan)
|
|
{
|
|
struct coh901318_chan *cohc = to_coh901318_chan(chan);
|
|
unsigned long flags;
|
|
|
|
dev_vdbg(COHC_2_DEV(cohc), "[%s] DMA channel %d\n",
|
|
__func__, cohc->id);
|
|
|
|
if (chan->client_count > 1)
|
|
return -EBUSY;
|
|
|
|
spin_lock_irqsave(&cohc->lock, flags);
|
|
|
|
coh901318_config(cohc, NULL);
|
|
|
|
cohc->allocated = 1;
|
|
dma_cookie_init(chan);
|
|
|
|
spin_unlock_irqrestore(&cohc->lock, flags);
|
|
|
|
return 1;
|
|
}
|
|
|
|
static void
|
|
coh901318_free_chan_resources(struct dma_chan *chan)
|
|
{
|
|
struct coh901318_chan *cohc = to_coh901318_chan(chan);
|
|
int channel = cohc->id;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&cohc->lock, flags);
|
|
|
|
/* Disable HW */
|
|
writel(0x00000000U, cohc->base->virtbase + COH901318_CX_CFG +
|
|
COH901318_CX_CFG_SPACING*channel);
|
|
writel(0x00000000U, cohc->base->virtbase + COH901318_CX_CTRL +
|
|
COH901318_CX_CTRL_SPACING*channel);
|
|
|
|
cohc->allocated = 0;
|
|
|
|
spin_unlock_irqrestore(&cohc->lock, flags);
|
|
|
|
chan->device->device_control(chan, DMA_TERMINATE_ALL, 0);
|
|
}
|
|
|
|
|
|
static dma_cookie_t
|
|
coh901318_tx_submit(struct dma_async_tx_descriptor *tx)
|
|
{
|
|
struct coh901318_desc *cohd = container_of(tx, struct coh901318_desc,
|
|
desc);
|
|
struct coh901318_chan *cohc = to_coh901318_chan(tx->chan);
|
|
unsigned long flags;
|
|
dma_cookie_t cookie;
|
|
|
|
spin_lock_irqsave(&cohc->lock, flags);
|
|
cookie = dma_cookie_assign(tx);
|
|
|
|
coh901318_desc_queue(cohc, cohd);
|
|
|
|
spin_unlock_irqrestore(&cohc->lock, flags);
|
|
|
|
return cookie;
|
|
}
|
|
|
|
static struct dma_async_tx_descriptor *
|
|
coh901318_prep_memcpy(struct dma_chan *chan, dma_addr_t dest, dma_addr_t src,
|
|
size_t size, unsigned long flags)
|
|
{
|
|
struct coh901318_lli *lli;
|
|
struct coh901318_desc *cohd;
|
|
unsigned long flg;
|
|
struct coh901318_chan *cohc = to_coh901318_chan(chan);
|
|
int lli_len;
|
|
u32 ctrl_last = cohc_chan_param(cohc)->ctrl_lli_last;
|
|
int ret;
|
|
|
|
spin_lock_irqsave(&cohc->lock, flg);
|
|
|
|
dev_vdbg(COHC_2_DEV(cohc),
|
|
"[%s] channel %d src 0x%x dest 0x%x size %d\n",
|
|
__func__, cohc->id, src, dest, size);
|
|
|
|
if (flags & DMA_PREP_INTERRUPT)
|
|
/* Trigger interrupt after last lli */
|
|
ctrl_last |= COH901318_CX_CTRL_TC_IRQ_ENABLE;
|
|
|
|
lli_len = size >> MAX_DMA_PACKET_SIZE_SHIFT;
|
|
if ((lli_len << MAX_DMA_PACKET_SIZE_SHIFT) < size)
|
|
lli_len++;
|
|
|
|
lli = coh901318_lli_alloc(&cohc->base->pool, lli_len);
|
|
|
|
if (lli == NULL)
|
|
goto err;
|
|
|
|
ret = coh901318_lli_fill_memcpy(
|
|
&cohc->base->pool, lli, src, size, dest,
|
|
cohc_chan_param(cohc)->ctrl_lli_chained,
|
|
ctrl_last);
|
|
if (ret)
|
|
goto err;
|
|
|
|
COH_DBG(coh901318_list_print(cohc, lli));
|
|
|
|
/* Pick a descriptor to handle this transfer */
|
|
cohd = coh901318_desc_get(cohc);
|
|
cohd->lli = lli;
|
|
cohd->flags = flags;
|
|
cohd->desc.tx_submit = coh901318_tx_submit;
|
|
|
|
spin_unlock_irqrestore(&cohc->lock, flg);
|
|
|
|
return &cohd->desc;
|
|
err:
|
|
spin_unlock_irqrestore(&cohc->lock, flg);
|
|
return NULL;
|
|
}
|
|
|
|
static struct dma_async_tx_descriptor *
|
|
coh901318_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
|
|
unsigned int sg_len, enum dma_transfer_direction direction,
|
|
unsigned long flags, void *context)
|
|
{
|
|
struct coh901318_chan *cohc = to_coh901318_chan(chan);
|
|
struct coh901318_lli *lli;
|
|
struct coh901318_desc *cohd;
|
|
const struct coh901318_params *params;
|
|
struct scatterlist *sg;
|
|
int len = 0;
|
|
int size;
|
|
int i;
|
|
u32 ctrl_chained = cohc_chan_param(cohc)->ctrl_lli_chained;
|
|
u32 ctrl = cohc_chan_param(cohc)->ctrl_lli;
|
|
u32 ctrl_last = cohc_chan_param(cohc)->ctrl_lli_last;
|
|
u32 config;
|
|
unsigned long flg;
|
|
int ret;
|
|
|
|
if (!sgl)
|
|
goto out;
|
|
if (sg_dma_len(sgl) == 0)
|
|
goto out;
|
|
|
|
spin_lock_irqsave(&cohc->lock, flg);
|
|
|
|
dev_vdbg(COHC_2_DEV(cohc), "[%s] sg_len %d dir %d\n",
|
|
__func__, sg_len, direction);
|
|
|
|
if (flags & DMA_PREP_INTERRUPT)
|
|
/* Trigger interrupt after last lli */
|
|
ctrl_last |= COH901318_CX_CTRL_TC_IRQ_ENABLE;
|
|
|
|
params = cohc_chan_param(cohc);
|
|
config = params->config;
|
|
/*
|
|
* Add runtime-specific control on top, make
|
|
* sure the bits you set per peripheral channel are
|
|
* cleared in the default config from the platform.
|
|
*/
|
|
ctrl_chained |= cohc->ctrl;
|
|
ctrl_last |= cohc->ctrl;
|
|
ctrl |= cohc->ctrl;
|
|
|
|
if (direction == DMA_MEM_TO_DEV) {
|
|
u32 tx_flags = COH901318_CX_CTRL_PRDD_SOURCE |
|
|
COH901318_CX_CTRL_SRC_ADDR_INC_ENABLE;
|
|
|
|
config |= COH901318_CX_CFG_RM_MEMORY_TO_PRIMARY;
|
|
ctrl_chained |= tx_flags;
|
|
ctrl_last |= tx_flags;
|
|
ctrl |= tx_flags;
|
|
} else if (direction == DMA_DEV_TO_MEM) {
|
|
u32 rx_flags = COH901318_CX_CTRL_PRDD_DEST |
|
|
COH901318_CX_CTRL_DST_ADDR_INC_ENABLE;
|
|
|
|
config |= COH901318_CX_CFG_RM_PRIMARY_TO_MEMORY;
|
|
ctrl_chained |= rx_flags;
|
|
ctrl_last |= rx_flags;
|
|
ctrl |= rx_flags;
|
|
} else
|
|
goto err_direction;
|
|
|
|
/* The dma only supports transmitting packages up to
|
|
* MAX_DMA_PACKET_SIZE. Calculate to total number of
|
|
* dma elemts required to send the entire sg list
|
|
*/
|
|
for_each_sg(sgl, sg, sg_len, i) {
|
|
unsigned int factor;
|
|
size = sg_dma_len(sg);
|
|
|
|
if (size <= MAX_DMA_PACKET_SIZE) {
|
|
len++;
|
|
continue;
|
|
}
|
|
|
|
factor = size >> MAX_DMA_PACKET_SIZE_SHIFT;
|
|
if ((factor << MAX_DMA_PACKET_SIZE_SHIFT) < size)
|
|
factor++;
|
|
|
|
len += factor;
|
|
}
|
|
|
|
pr_debug("Allocate %d lli:s for this transfer\n", len);
|
|
lli = coh901318_lli_alloc(&cohc->base->pool, len);
|
|
|
|
if (lli == NULL)
|
|
goto err_dma_alloc;
|
|
|
|
/* initiate allocated lli list */
|
|
ret = coh901318_lli_fill_sg(&cohc->base->pool, lli, sgl, sg_len,
|
|
cohc->addr,
|
|
ctrl_chained,
|
|
ctrl,
|
|
ctrl_last,
|
|
direction, COH901318_CX_CTRL_TC_IRQ_ENABLE);
|
|
if (ret)
|
|
goto err_lli_fill;
|
|
|
|
|
|
COH_DBG(coh901318_list_print(cohc, lli));
|
|
|
|
/* Pick a descriptor to handle this transfer */
|
|
cohd = coh901318_desc_get(cohc);
|
|
cohd->head_config = config;
|
|
/*
|
|
* Set the default head ctrl for the channel to the one from the
|
|
* lli, things may have changed due to odd buffer alignment
|
|
* etc.
|
|
*/
|
|
cohd->head_ctrl = lli->control;
|
|
cohd->dir = direction;
|
|
cohd->flags = flags;
|
|
cohd->desc.tx_submit = coh901318_tx_submit;
|
|
cohd->lli = lli;
|
|
|
|
spin_unlock_irqrestore(&cohc->lock, flg);
|
|
|
|
return &cohd->desc;
|
|
err_lli_fill:
|
|
err_dma_alloc:
|
|
err_direction:
|
|
spin_unlock_irqrestore(&cohc->lock, flg);
|
|
out:
|
|
return NULL;
|
|
}
|
|
|
|
static enum dma_status
|
|
coh901318_tx_status(struct dma_chan *chan, dma_cookie_t cookie,
|
|
struct dma_tx_state *txstate)
|
|
{
|
|
struct coh901318_chan *cohc = to_coh901318_chan(chan);
|
|
enum dma_status ret;
|
|
|
|
ret = dma_cookie_status(chan, cookie, txstate);
|
|
if (ret == DMA_SUCCESS)
|
|
return ret;
|
|
|
|
dma_set_residue(txstate, coh901318_get_bytes_left(chan));
|
|
|
|
if (ret == DMA_IN_PROGRESS && cohc->stopped)
|
|
ret = DMA_PAUSED;
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void
|
|
coh901318_issue_pending(struct dma_chan *chan)
|
|
{
|
|
struct coh901318_chan *cohc = to_coh901318_chan(chan);
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&cohc->lock, flags);
|
|
|
|
/*
|
|
* Busy means that pending jobs are already being processed,
|
|
* and then there is no point in starting the queue: the
|
|
* terminal count interrupt on the channel will take the next
|
|
* job on the queue and execute it anyway.
|
|
*/
|
|
if (!cohc->busy)
|
|
coh901318_queue_start(cohc);
|
|
|
|
spin_unlock_irqrestore(&cohc->lock, flags);
|
|
}
|
|
|
|
/*
|
|
* Here we wrap in the runtime dma control interface
|
|
*/
|
|
struct burst_table {
|
|
int burst_8bit;
|
|
int burst_16bit;
|
|
int burst_32bit;
|
|
u32 reg;
|
|
};
|
|
|
|
static const struct burst_table burst_sizes[] = {
|
|
{
|
|
.burst_8bit = 64,
|
|
.burst_16bit = 32,
|
|
.burst_32bit = 16,
|
|
.reg = COH901318_CX_CTRL_BURST_COUNT_64_BYTES,
|
|
},
|
|
{
|
|
.burst_8bit = 48,
|
|
.burst_16bit = 24,
|
|
.burst_32bit = 12,
|
|
.reg = COH901318_CX_CTRL_BURST_COUNT_48_BYTES,
|
|
},
|
|
{
|
|
.burst_8bit = 32,
|
|
.burst_16bit = 16,
|
|
.burst_32bit = 8,
|
|
.reg = COH901318_CX_CTRL_BURST_COUNT_32_BYTES,
|
|
},
|
|
{
|
|
.burst_8bit = 16,
|
|
.burst_16bit = 8,
|
|
.burst_32bit = 4,
|
|
.reg = COH901318_CX_CTRL_BURST_COUNT_16_BYTES,
|
|
},
|
|
{
|
|
.burst_8bit = 8,
|
|
.burst_16bit = 4,
|
|
.burst_32bit = 2,
|
|
.reg = COH901318_CX_CTRL_BURST_COUNT_8_BYTES,
|
|
},
|
|
{
|
|
.burst_8bit = 4,
|
|
.burst_16bit = 2,
|
|
.burst_32bit = 1,
|
|
.reg = COH901318_CX_CTRL_BURST_COUNT_4_BYTES,
|
|
},
|
|
{
|
|
.burst_8bit = 2,
|
|
.burst_16bit = 1,
|
|
.burst_32bit = 0,
|
|
.reg = COH901318_CX_CTRL_BURST_COUNT_2_BYTES,
|
|
},
|
|
{
|
|
.burst_8bit = 1,
|
|
.burst_16bit = 0,
|
|
.burst_32bit = 0,
|
|
.reg = COH901318_CX_CTRL_BURST_COUNT_1_BYTE,
|
|
},
|
|
};
|
|
|
|
static void coh901318_dma_set_runtimeconfig(struct dma_chan *chan,
|
|
struct dma_slave_config *config)
|
|
{
|
|
struct coh901318_chan *cohc = to_coh901318_chan(chan);
|
|
dma_addr_t addr;
|
|
enum dma_slave_buswidth addr_width;
|
|
u32 maxburst;
|
|
u32 ctrl = 0;
|
|
int i = 0;
|
|
|
|
/* We only support mem to per or per to mem transfers */
|
|
if (config->direction == DMA_DEV_TO_MEM) {
|
|
addr = config->src_addr;
|
|
addr_width = config->src_addr_width;
|
|
maxburst = config->src_maxburst;
|
|
} else if (config->direction == DMA_MEM_TO_DEV) {
|
|
addr = config->dst_addr;
|
|
addr_width = config->dst_addr_width;
|
|
maxburst = config->dst_maxburst;
|
|
} else {
|
|
dev_err(COHC_2_DEV(cohc), "illegal channel mode\n");
|
|
return;
|
|
}
|
|
|
|
dev_dbg(COHC_2_DEV(cohc), "configure channel for %d byte transfers\n",
|
|
addr_width);
|
|
switch (addr_width) {
|
|
case DMA_SLAVE_BUSWIDTH_1_BYTE:
|
|
ctrl |=
|
|
COH901318_CX_CTRL_SRC_BUS_SIZE_8_BITS |
|
|
COH901318_CX_CTRL_DST_BUS_SIZE_8_BITS;
|
|
|
|
while (i < ARRAY_SIZE(burst_sizes)) {
|
|
if (burst_sizes[i].burst_8bit <= maxburst)
|
|
break;
|
|
i++;
|
|
}
|
|
|
|
break;
|
|
case DMA_SLAVE_BUSWIDTH_2_BYTES:
|
|
ctrl |=
|
|
COH901318_CX_CTRL_SRC_BUS_SIZE_16_BITS |
|
|
COH901318_CX_CTRL_DST_BUS_SIZE_16_BITS;
|
|
|
|
while (i < ARRAY_SIZE(burst_sizes)) {
|
|
if (burst_sizes[i].burst_16bit <= maxburst)
|
|
break;
|
|
i++;
|
|
}
|
|
|
|
break;
|
|
case DMA_SLAVE_BUSWIDTH_4_BYTES:
|
|
/* Direction doesn't matter here, it's 32/32 bits */
|
|
ctrl |=
|
|
COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
|
|
COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS;
|
|
|
|
while (i < ARRAY_SIZE(burst_sizes)) {
|
|
if (burst_sizes[i].burst_32bit <= maxburst)
|
|
break;
|
|
i++;
|
|
}
|
|
|
|
break;
|
|
default:
|
|
dev_err(COHC_2_DEV(cohc),
|
|
"bad runtimeconfig: alien address width\n");
|
|
return;
|
|
}
|
|
|
|
ctrl |= burst_sizes[i].reg;
|
|
dev_dbg(COHC_2_DEV(cohc),
|
|
"selected burst size %d bytes for address width %d bytes, maxburst %d\n",
|
|
burst_sizes[i].burst_8bit, addr_width, maxburst);
|
|
|
|
cohc->addr = addr;
|
|
cohc->ctrl = ctrl;
|
|
}
|
|
|
|
static int
|
|
coh901318_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd,
|
|
unsigned long arg)
|
|
{
|
|
unsigned long flags;
|
|
struct coh901318_chan *cohc = to_coh901318_chan(chan);
|
|
struct coh901318_desc *cohd;
|
|
void __iomem *virtbase = cohc->base->virtbase;
|
|
|
|
if (cmd == DMA_SLAVE_CONFIG) {
|
|
struct dma_slave_config *config =
|
|
(struct dma_slave_config *) arg;
|
|
|
|
coh901318_dma_set_runtimeconfig(chan, config);
|
|
return 0;
|
|
}
|
|
|
|
if (cmd == DMA_PAUSE) {
|
|
coh901318_pause(chan);
|
|
return 0;
|
|
}
|
|
|
|
if (cmd == DMA_RESUME) {
|
|
coh901318_resume(chan);
|
|
return 0;
|
|
}
|
|
|
|
if (cmd != DMA_TERMINATE_ALL)
|
|
return -ENXIO;
|
|
|
|
/* The remainder of this function terminates the transfer */
|
|
coh901318_pause(chan);
|
|
spin_lock_irqsave(&cohc->lock, flags);
|
|
|
|
/* Clear any pending BE or TC interrupt */
|
|
if (cohc->id < 32) {
|
|
writel(1 << cohc->id, virtbase + COH901318_BE_INT_CLEAR1);
|
|
writel(1 << cohc->id, virtbase + COH901318_TC_INT_CLEAR1);
|
|
} else {
|
|
writel(1 << (cohc->id - 32), virtbase +
|
|
COH901318_BE_INT_CLEAR2);
|
|
writel(1 << (cohc->id - 32), virtbase +
|
|
COH901318_TC_INT_CLEAR2);
|
|
}
|
|
|
|
enable_powersave(cohc);
|
|
|
|
while ((cohd = coh901318_first_active_get(cohc))) {
|
|
/* release the lli allocation*/
|
|
coh901318_lli_free(&cohc->base->pool, &cohd->lli);
|
|
|
|
/* return desc to free-list */
|
|
coh901318_desc_remove(cohd);
|
|
coh901318_desc_free(cohc, cohd);
|
|
}
|
|
|
|
while ((cohd = coh901318_first_queued(cohc))) {
|
|
/* release the lli allocation*/
|
|
coh901318_lli_free(&cohc->base->pool, &cohd->lli);
|
|
|
|
/* return desc to free-list */
|
|
coh901318_desc_remove(cohd);
|
|
coh901318_desc_free(cohc, cohd);
|
|
}
|
|
|
|
|
|
cohc->nbr_active_done = 0;
|
|
cohc->busy = 0;
|
|
|
|
spin_unlock_irqrestore(&cohc->lock, flags);
|
|
|
|
return 0;
|
|
}
|
|
|
|
void coh901318_base_init(struct dma_device *dma, const int *pick_chans,
|
|
struct coh901318_base *base)
|
|
{
|
|
int chans_i;
|
|
int i = 0;
|
|
struct coh901318_chan *cohc;
|
|
|
|
INIT_LIST_HEAD(&dma->channels);
|
|
|
|
for (chans_i = 0; pick_chans[chans_i] != -1; chans_i += 2) {
|
|
for (i = pick_chans[chans_i]; i <= pick_chans[chans_i+1]; i++) {
|
|
cohc = &base->chans[i];
|
|
|
|
cohc->base = base;
|
|
cohc->chan.device = dma;
|
|
cohc->id = i;
|
|
|
|
/* TODO: do we really need this lock if only one
|
|
* client is connected to each channel?
|
|
*/
|
|
|
|
spin_lock_init(&cohc->lock);
|
|
|
|
cohc->nbr_active_done = 0;
|
|
cohc->busy = 0;
|
|
INIT_LIST_HEAD(&cohc->free);
|
|
INIT_LIST_HEAD(&cohc->active);
|
|
INIT_LIST_HEAD(&cohc->queue);
|
|
|
|
tasklet_init(&cohc->tasklet, dma_tasklet,
|
|
(unsigned long) cohc);
|
|
|
|
list_add_tail(&cohc->chan.device_node,
|
|
&dma->channels);
|
|
}
|
|
}
|
|
}
|
|
|
|
static int __init coh901318_probe(struct platform_device *pdev)
|
|
{
|
|
int err = 0;
|
|
struct coh901318_base *base;
|
|
int irq;
|
|
struct resource *io;
|
|
|
|
io = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
|
if (!io)
|
|
return -ENODEV;
|
|
|
|
/* Map DMA controller registers to virtual memory */
|
|
if (devm_request_mem_region(&pdev->dev,
|
|
io->start,
|
|
resource_size(io),
|
|
pdev->dev.driver->name) == NULL)
|
|
return -ENOMEM;
|
|
|
|
base = devm_kzalloc(&pdev->dev,
|
|
ALIGN(sizeof(struct coh901318_base), 4) +
|
|
U300_DMA_CHANNELS *
|
|
sizeof(struct coh901318_chan),
|
|
GFP_KERNEL);
|
|
if (!base)
|
|
return -ENOMEM;
|
|
|
|
base->chans = ((void *)base) + ALIGN(sizeof(struct coh901318_base), 4);
|
|
|
|
base->virtbase = devm_ioremap(&pdev->dev, io->start, resource_size(io));
|
|
if (!base->virtbase)
|
|
return -ENOMEM;
|
|
|
|
base->dev = &pdev->dev;
|
|
spin_lock_init(&base->pm.lock);
|
|
base->pm.started_channels = 0;
|
|
|
|
COH901318_DEBUGFS_ASSIGN(debugfs_dma_base, base);
|
|
|
|
irq = platform_get_irq(pdev, 0);
|
|
if (irq < 0)
|
|
return irq;
|
|
|
|
err = devm_request_irq(&pdev->dev, irq, dma_irq_handler, IRQF_DISABLED,
|
|
"coh901318", base);
|
|
if (err)
|
|
return err;
|
|
|
|
err = coh901318_pool_create(&base->pool, &pdev->dev,
|
|
sizeof(struct coh901318_lli),
|
|
32);
|
|
if (err)
|
|
return err;
|
|
|
|
/* init channels for device transfers */
|
|
coh901318_base_init(&base->dma_slave, dma_slave_channels,
|
|
base);
|
|
|
|
dma_cap_zero(base->dma_slave.cap_mask);
|
|
dma_cap_set(DMA_SLAVE, base->dma_slave.cap_mask);
|
|
|
|
base->dma_slave.device_alloc_chan_resources = coh901318_alloc_chan_resources;
|
|
base->dma_slave.device_free_chan_resources = coh901318_free_chan_resources;
|
|
base->dma_slave.device_prep_slave_sg = coh901318_prep_slave_sg;
|
|
base->dma_slave.device_tx_status = coh901318_tx_status;
|
|
base->dma_slave.device_issue_pending = coh901318_issue_pending;
|
|
base->dma_slave.device_control = coh901318_control;
|
|
base->dma_slave.dev = &pdev->dev;
|
|
|
|
err = dma_async_device_register(&base->dma_slave);
|
|
|
|
if (err)
|
|
goto err_register_slave;
|
|
|
|
/* init channels for memcpy */
|
|
coh901318_base_init(&base->dma_memcpy, dma_memcpy_channels,
|
|
base);
|
|
|
|
dma_cap_zero(base->dma_memcpy.cap_mask);
|
|
dma_cap_set(DMA_MEMCPY, base->dma_memcpy.cap_mask);
|
|
|
|
base->dma_memcpy.device_alloc_chan_resources = coh901318_alloc_chan_resources;
|
|
base->dma_memcpy.device_free_chan_resources = coh901318_free_chan_resources;
|
|
base->dma_memcpy.device_prep_dma_memcpy = coh901318_prep_memcpy;
|
|
base->dma_memcpy.device_tx_status = coh901318_tx_status;
|
|
base->dma_memcpy.device_issue_pending = coh901318_issue_pending;
|
|
base->dma_memcpy.device_control = coh901318_control;
|
|
base->dma_memcpy.dev = &pdev->dev;
|
|
/*
|
|
* This controller can only access address at even 32bit boundaries,
|
|
* i.e. 2^2
|
|
*/
|
|
base->dma_memcpy.copy_align = 2;
|
|
err = dma_async_device_register(&base->dma_memcpy);
|
|
|
|
if (err)
|
|
goto err_register_memcpy;
|
|
|
|
err = of_dma_controller_register(pdev->dev.of_node, coh901318_xlate,
|
|
base);
|
|
if (err)
|
|
goto err_register_of_dma;
|
|
|
|
platform_set_drvdata(pdev, base);
|
|
dev_info(&pdev->dev, "Initialized COH901318 DMA on virtual base 0x%08x\n",
|
|
(u32) base->virtbase);
|
|
|
|
return err;
|
|
|
|
err_register_of_dma:
|
|
dma_async_device_unregister(&base->dma_memcpy);
|
|
err_register_memcpy:
|
|
dma_async_device_unregister(&base->dma_slave);
|
|
err_register_slave:
|
|
coh901318_pool_destroy(&base->pool);
|
|
return err;
|
|
}
|
|
|
|
static int coh901318_remove(struct platform_device *pdev)
|
|
{
|
|
struct coh901318_base *base = platform_get_drvdata(pdev);
|
|
|
|
of_dma_controller_free(pdev->dev.of_node);
|
|
dma_async_device_unregister(&base->dma_memcpy);
|
|
dma_async_device_unregister(&base->dma_slave);
|
|
coh901318_pool_destroy(&base->pool);
|
|
return 0;
|
|
}
|
|
|
|
static const struct of_device_id coh901318_dt_match[] = {
|
|
{ .compatible = "stericsson,coh901318" },
|
|
{},
|
|
};
|
|
|
|
static struct platform_driver coh901318_driver = {
|
|
.remove = coh901318_remove,
|
|
.driver = {
|
|
.name = "coh901318",
|
|
.of_match_table = coh901318_dt_match,
|
|
},
|
|
};
|
|
|
|
int __init coh901318_init(void)
|
|
{
|
|
return platform_driver_probe(&coh901318_driver, coh901318_probe);
|
|
}
|
|
subsys_initcall(coh901318_init);
|
|
|
|
void __exit coh901318_exit(void)
|
|
{
|
|
platform_driver_unregister(&coh901318_driver);
|
|
}
|
|
module_exit(coh901318_exit);
|
|
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_AUTHOR("Per Friden");
|