+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * driver/dma/coh901318.c
- *
- * Copyright (C) 2007-2009 ST-Ericsson
- * DMA driver for COH 901 318
- * Author: Per Friden <per.friden@stericsson.com>
- */
-
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/kernel.h> /* printk() */
-#include <linux/fs.h> /* everything... */
-#include <linux/scatterlist.h>
-#include <linux/slab.h> /* kmalloc() */
-#include <linux/dmaengine.h>
-#include <linux/platform_device.h>
-#include <linux/device.h>
-#include <linux/irqreturn.h>
-#include <linux/interrupt.h>
-#include <linux/io.h>
-#include <linux/uaccess.h>
-#include <linux/debugfs.h>
-#include <linux/platform_data/dma-coh901318.h>
-#include <linux/of_dma.h>
-
-#include "coh901318.h"
-#include "dmaengine.h"
-
-#define COH901318_MOD32_MASK (0x1F)
-#define COH901318_WORD_MASK (0xFFFFFFFF)
-/* INT_STATUS - Interrupt Status Registers 32bit (R/-) */
-#define COH901318_INT_STATUS1 (0x0000)
-#define COH901318_INT_STATUS2 (0x0004)
-/* TC_INT_STATUS - Terminal Count Interrupt Status Registers 32bit (R/-) */
-#define COH901318_TC_INT_STATUS1 (0x0008)
-#define COH901318_TC_INT_STATUS2 (0x000C)
-/* TC_INT_CLEAR - Terminal Count Interrupt Clear Registers 32bit (-/W) */
-#define COH901318_TC_INT_CLEAR1 (0x0010)
-#define COH901318_TC_INT_CLEAR2 (0x0014)
-/* RAW_TC_INT_STATUS - Raw Term Count Interrupt Status Registers 32bit (R/-) */
-#define COH901318_RAW_TC_INT_STATUS1 (0x0018)
-#define COH901318_RAW_TC_INT_STATUS2 (0x001C)
-/* BE_INT_STATUS - Bus Error Interrupt Status Registers 32bit (R/-) */
-#define COH901318_BE_INT_STATUS1 (0x0020)
-#define COH901318_BE_INT_STATUS2 (0x0024)
-/* BE_INT_CLEAR - Bus Error Interrupt Clear Registers 32bit (-/W) */
-#define COH901318_BE_INT_CLEAR1 (0x0028)
-#define COH901318_BE_INT_CLEAR2 (0x002C)
-/* RAW_BE_INT_STATUS - Raw Term Count Interrupt Status Registers 32bit (R/-) */
-#define COH901318_RAW_BE_INT_STATUS1 (0x0030)
-#define COH901318_RAW_BE_INT_STATUS2 (0x0034)
-
-/*
- * CX_CFG - Channel Configuration Registers 32bit (R/W)
- */
-#define COH901318_CX_CFG (0x0100)
-#define COH901318_CX_CFG_SPACING (0x04)
-/* Channel enable activates tha dma job */
-#define COH901318_CX_CFG_CH_ENABLE (0x00000001)
-#define COH901318_CX_CFG_CH_DISABLE (0x00000000)
-/* Request Mode */
-#define COH901318_CX_CFG_RM_MASK (0x00000006)
-#define COH901318_CX_CFG_RM_MEMORY_TO_MEMORY (0x0 << 1)
-#define COH901318_CX_CFG_RM_PRIMARY_TO_MEMORY (0x1 << 1)
-#define COH901318_CX_CFG_RM_MEMORY_TO_PRIMARY (0x1 << 1)
-#define COH901318_CX_CFG_RM_PRIMARY_TO_SECONDARY (0x3 << 1)
-#define COH901318_CX_CFG_RM_SECONDARY_TO_PRIMARY (0x3 << 1)
-/* Linked channel request field. RM must == 11 */
-#define COH901318_CX_CFG_LCRF_SHIFT 3
-#define COH901318_CX_CFG_LCRF_MASK (0x000001F8)
-#define COH901318_CX_CFG_LCR_DISABLE (0x00000000)
-/* Terminal Counter Interrupt Request Mask */
-#define COH901318_CX_CFG_TC_IRQ_ENABLE (0x00000200)
-#define COH901318_CX_CFG_TC_IRQ_DISABLE (0x00000000)
-/* Bus Error interrupt Mask */
-#define COH901318_CX_CFG_BE_IRQ_ENABLE (0x00000400)
-#define COH901318_CX_CFG_BE_IRQ_DISABLE (0x00000000)
-
-/*
- * CX_STAT - Channel Status Registers 32bit (R/-)
- */
-#define COH901318_CX_STAT (0x0200)
-#define COH901318_CX_STAT_SPACING (0x04)
-#define COH901318_CX_STAT_RBE_IRQ_IND (0x00000008)
-#define COH901318_CX_STAT_RTC_IRQ_IND (0x00000004)
-#define COH901318_CX_STAT_ACTIVE (0x00000002)
-#define COH901318_CX_STAT_ENABLED (0x00000001)
-
-/*
- * CX_CTRL - Channel Control Registers 32bit (R/W)
- */
-#define COH901318_CX_CTRL (0x0400)
-#define COH901318_CX_CTRL_SPACING (0x10)
-/* Transfer Count Enable */
-#define COH901318_CX_CTRL_TC_ENABLE (0x00001000)
-#define COH901318_CX_CTRL_TC_DISABLE (0x00000000)
-/* Transfer Count Value 0 - 4095 */
-#define COH901318_CX_CTRL_TC_VALUE_MASK (0x00000FFF)
-/* Burst count */
-#define COH901318_CX_CTRL_BURST_COUNT_MASK (0x0000E000)
-#define COH901318_CX_CTRL_BURST_COUNT_64_BYTES (0x7 << 13)
-#define COH901318_CX_CTRL_BURST_COUNT_48_BYTES (0x6 << 13)
-#define COH901318_CX_CTRL_BURST_COUNT_32_BYTES (0x5 << 13)
-#define COH901318_CX_CTRL_BURST_COUNT_16_BYTES (0x4 << 13)
-#define COH901318_CX_CTRL_BURST_COUNT_8_BYTES (0x3 << 13)
-#define COH901318_CX_CTRL_BURST_COUNT_4_BYTES (0x2 << 13)
-#define COH901318_CX_CTRL_BURST_COUNT_2_BYTES (0x1 << 13)
-#define COH901318_CX_CTRL_BURST_COUNT_1_BYTE (0x0 << 13)
-/* Source bus size */
-#define COH901318_CX_CTRL_SRC_BUS_SIZE_MASK (0x00030000)
-#define COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS (0x2 << 16)
-#define COH901318_CX_CTRL_SRC_BUS_SIZE_16_BITS (0x1 << 16)
-#define COH901318_CX_CTRL_SRC_BUS_SIZE_8_BITS (0x0 << 16)
-/* Source address increment */
-#define COH901318_CX_CTRL_SRC_ADDR_INC_ENABLE (0x00040000)
-#define COH901318_CX_CTRL_SRC_ADDR_INC_DISABLE (0x00000000)
-/* Destination Bus Size */
-#define COH901318_CX_CTRL_DST_BUS_SIZE_MASK (0x00180000)
-#define COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS (0x2 << 19)
-#define COH901318_CX_CTRL_DST_BUS_SIZE_16_BITS (0x1 << 19)
-#define COH901318_CX_CTRL_DST_BUS_SIZE_8_BITS (0x0 << 19)
-/* Destination address increment */
-#define COH901318_CX_CTRL_DST_ADDR_INC_ENABLE (0x00200000)
-#define COH901318_CX_CTRL_DST_ADDR_INC_DISABLE (0x00000000)
-/* Master Mode (Master2 is only connected to MSL) */
-#define COH901318_CX_CTRL_MASTER_MODE_MASK (0x00C00000)
-#define COH901318_CX_CTRL_MASTER_MODE_M2R_M1W (0x3 << 22)
-#define COH901318_CX_CTRL_MASTER_MODE_M1R_M2W (0x2 << 22)
-#define COH901318_CX_CTRL_MASTER_MODE_M2RW (0x1 << 22)
-#define COH901318_CX_CTRL_MASTER_MODE_M1RW (0x0 << 22)
-/* Terminal Count flag to PER enable */
-#define COH901318_CX_CTRL_TCP_ENABLE (0x01000000)
-#define COH901318_CX_CTRL_TCP_DISABLE (0x00000000)
-/* Terminal Count flags to CPU enable */
-#define COH901318_CX_CTRL_TC_IRQ_ENABLE (0x02000000)
-#define COH901318_CX_CTRL_TC_IRQ_DISABLE (0x00000000)
-/* Hand shake to peripheral */
-#define COH901318_CX_CTRL_HSP_ENABLE (0x04000000)
-#define COH901318_CX_CTRL_HSP_DISABLE (0x00000000)
-#define COH901318_CX_CTRL_HSS_ENABLE (0x08000000)
-#define COH901318_CX_CTRL_HSS_DISABLE (0x00000000)
-/* DMA mode */
-#define COH901318_CX_CTRL_DDMA_MASK (0x30000000)
-#define COH901318_CX_CTRL_DDMA_LEGACY (0x0 << 28)
-#define COH901318_CX_CTRL_DDMA_DEMAND_DMA1 (0x1 << 28)
-#define COH901318_CX_CTRL_DDMA_DEMAND_DMA2 (0x2 << 28)
-/* Primary Request Data Destination */
-#define COH901318_CX_CTRL_PRDD_MASK (0x40000000)
-#define COH901318_CX_CTRL_PRDD_DEST (0x1 << 30)
-#define COH901318_CX_CTRL_PRDD_SOURCE (0x0 << 30)
-
-/*
- * CX_SRC_ADDR - Channel Source Address Registers 32bit (R/W)
- */
-#define COH901318_CX_SRC_ADDR (0x0404)
-#define COH901318_CX_SRC_ADDR_SPACING (0x10)
-
-/*
- * CX_DST_ADDR - Channel Destination Address Registers 32bit R/W
- */
-#define COH901318_CX_DST_ADDR (0x0408)
-#define COH901318_CX_DST_ADDR_SPACING (0x10)
-
-/*
- * CX_LNK_ADDR - Channel Link Address Registers 32bit (R/W)
- */
-#define COH901318_CX_LNK_ADDR (0x040C)
-#define COH901318_CX_LNK_ADDR_SPACING (0x10)
-#define COH901318_CX_LNK_LINK_IMMEDIATE (0x00000001)
-
-/**
- * struct coh901318_params - parameters for DMAC configuration
- * @config: DMA config register
- * @ctrl_lli_last: DMA control register for the last lli in the list
- * @ctrl_lli: DMA control register for an lli
- * @ctrl_lli_chained: DMA control register for a chained lli
- */
-struct coh901318_params {
- u32 config;
- u32 ctrl_lli_last;
- u32 ctrl_lli;
- u32 ctrl_lli_chained;
-};
-
-/**
- * struct coh_dma_channel - dma channel base
- * @name: ascii name of dma channel
- * @number: channel id number
- * @desc_nbr_max: number of preallocated descriptors
- * @priority_high: prio of channel, 0 low otherwise high.
- * @param: configuration parameters
- */
-struct coh_dma_channel {
- const char name[32];
- const int number;
- const int desc_nbr_max;
- const int priority_high;
- const struct coh901318_params param;
-};
-
-/**
- * struct powersave - DMA power save structure
- * @lock: lock protecting data in this struct
- * @started_channels: bit mask indicating active dma channels
- */
-struct powersave {
- spinlock_t lock;
- u64 started_channels;
-};
-
-/* points out all dma slave channels.
- * Syntax is [A1, B1, A2, B2, .... ,-1,-1]
- * Select all channels from A to B, end of list is marked with -1,-1
- */
-static int dma_slave_channels[] = {
- U300_DMA_MSL_TX_0, U300_DMA_SPI_RX,
- U300_DMA_UART1_TX, U300_DMA_UART1_RX, -1, -1};
-
-/* points out all dma memcpy channels. */
-static int dma_memcpy_channels[] = {
- U300_DMA_GENERAL_PURPOSE_0, U300_DMA_GENERAL_PURPOSE_8, -1, -1};
-
-#define flags_memcpy_config (COH901318_CX_CFG_CH_DISABLE | \
- COH901318_CX_CFG_RM_MEMORY_TO_MEMORY | \
- COH901318_CX_CFG_LCR_DISABLE | \
- COH901318_CX_CFG_TC_IRQ_ENABLE | \
- COH901318_CX_CFG_BE_IRQ_ENABLE)
-#define flags_memcpy_lli_chained (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_ENABLE | \
- COH901318_CX_CTRL_MASTER_MODE_M1RW | \
- COH901318_CX_CTRL_TCP_DISABLE | \
- COH901318_CX_CTRL_TC_IRQ_DISABLE | \
- COH901318_CX_CTRL_HSP_DISABLE | \
- COH901318_CX_CTRL_HSS_DISABLE | \
- COH901318_CX_CTRL_DDMA_LEGACY | \
- COH901318_CX_CTRL_PRDD_SOURCE)
-#define flags_memcpy_lli (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_ENABLE | \
- COH901318_CX_CTRL_MASTER_MODE_M1RW | \
- COH901318_CX_CTRL_TCP_DISABLE | \
- COH901318_CX_CTRL_TC_IRQ_DISABLE | \
- COH901318_CX_CTRL_HSP_DISABLE | \
- COH901318_CX_CTRL_HSS_DISABLE | \
- COH901318_CX_CTRL_DDMA_LEGACY | \
- COH901318_CX_CTRL_PRDD_SOURCE)
-#define flags_memcpy_lli_last (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_ENABLE | \
- COH901318_CX_CTRL_MASTER_MODE_M1RW | \
- COH901318_CX_CTRL_TCP_DISABLE | \
- COH901318_CX_CTRL_TC_IRQ_ENABLE | \
- COH901318_CX_CTRL_HSP_DISABLE | \
- COH901318_CX_CTRL_HSS_DISABLE | \
- COH901318_CX_CTRL_DDMA_LEGACY | \
- COH901318_CX_CTRL_PRDD_SOURCE)
-
-static const struct coh_dma_channel chan_config[U300_DMA_CHANNELS] = {
- {
- .number = U300_DMA_MSL_TX_0,
- .name = "MSL TX 0",
- .priority_high = 0,
- },
- {
- .number = U300_DMA_MSL_TX_1,
- .name = "MSL TX 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_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_2,
- .name = "MSL TX 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_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,
- .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;
- unsigned int irq;
- 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;
-
- struct dma_slave_config config;
- 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 %pad"
- ", dst %pad, link %pad 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 ssize_t 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 & (1ULL << 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 = {
- .open = simple_open,
- .read = coh901318_debugfs_read,
- .llseek = default_llseek,
-};
-
-
-static int __init init_coh901318_debugfs(void)
-{
-
- dma_dentry = debugfs_create_dir("dma", NULL);
-
- 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 int coh901318_dma_set_runtimeconfig(struct dma_chan *chan,
- struct dma_slave_config *config,
- enum dma_transfer_direction direction);
-
-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)
-{
- return list_first_entry_or_null(&cohc->active, struct coh901318_desc,
- node);
-}
-
-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)
-{
- return list_first_entry_or_null(&cohc->queue, struct coh901318_desc,
- node);
-}
-
-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 int 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);
- return 0;
-}
-
-/* Resumes a transfer that has been stopped via 300_dma_stop(..).
- Power save is handled.
-*/
-static int 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);
- return 0;
-}
-
-bool coh901318_filter_id(struct dma_chan *chan, void *chan_id)
-{
- unsigned long ch_nr = (unsigned long) 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)
-{
- const struct coh901318_params *p;
- int channel = cohc->id;
- void __iomem *virtbase = cohc->base->virtbase;
-
- 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);
-
- 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(struct tasklet_struct *t)
-{
- struct coh901318_chan *cohc = from_tasklet(cohc, t, tasklet);
- struct coh901318_desc *cohd_fin;
- unsigned long flags;
- struct dmaengine_desc_callback cb;
-
- 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 */
- dmaengine_desc_get_callback(&cohd_fin->desc, &cb);
-
- /* 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 */
- dmaengine_desc_callback_invoke(&cb, NULL);
-
- 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;
- }
-
- /*
- * 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;
-
- /*
- * 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_terminate_all(struct dma_chan *chan)
-{
- unsigned long flags;
- struct coh901318_chan *cohc = to_coh901318_chan(chan);
- struct coh901318_desc *cohd;
- void __iomem *virtbase = cohc->base->virtbase;
-
- /* 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;
-}
-
-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);
-
- coh901318_terminate_all(chan);
-}
-
-
-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 %pad dest %pad size %zu\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;
-
- coh901318_dma_set_runtimeconfig(chan, &cohc->config, direction);
-
- /* 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_COMPLETE || !txstate)
- 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 int coh901318_dma_set_runtimeconfig(struct dma_chan *chan,
- struct dma_slave_config *config,
- enum dma_transfer_direction direction)
-{
- 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 (direction == DMA_DEV_TO_MEM) {
- addr = config->src_addr;
- addr_width = config->src_addr_width;
- maxburst = config->src_maxburst;
- } else if (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 -EINVAL;
- }
-
- 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 -EINVAL;
- }
-
- 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;
-
- return 0;
-}
-
-static int coh901318_dma_slave_config(struct dma_chan *chan,
- struct dma_slave_config *config)
-{
- struct coh901318_chan *cohc = to_coh901318_chan(chan);
-
- memcpy(&cohc->config, config, sizeof(*config));
-
- return 0;
-}
-
-static 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_setup(&cohc->tasklet, dma_tasklet);
-
- 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, 0,
- "coh901318", base);
- if (err)
- return err;
-
- base->irq = irq;
-
- 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_config = coh901318_dma_slave_config;
- base->dma_slave.device_pause = coh901318_pause;
- base->dma_slave.device_resume = coh901318_resume;
- base->dma_slave.device_terminate_all = coh901318_terminate_all;
- 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_config = coh901318_dma_slave_config;
- base->dma_memcpy.device_pause = coh901318_pause;
- base->dma_memcpy.device_resume = coh901318_resume;
- base->dma_memcpy.device_terminate_all = coh901318_terminate_all;
- 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 = DMAENGINE_ALIGN_4_BYTES;
- 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%p\n",
- 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 void coh901318_base_remove(struct coh901318_base *base, const int *pick_chans)
-{
- int chans_i;
- int i = 0;
- struct coh901318_chan *cohc;
-
- 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];
-
- tasklet_kill(&cohc->tasklet);
- }
- }
-
-}
-
-static int coh901318_remove(struct platform_device *pdev)
-{
- struct coh901318_base *base = platform_get_drvdata(pdev);
-
- devm_free_irq(&pdev->dev, base->irq, base);
-
- coh901318_base_remove(base, dma_slave_channels);
- coh901318_base_remove(base, dma_memcpy_channels);
-
- 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,
- },
-};
-
-static int __init coh901318_init(void)
-{
- return platform_driver_probe(&coh901318_driver, coh901318_probe);
-}
-subsys_initcall(coh901318_init);
-
-static void __exit coh901318_exit(void)
-{
- platform_driver_unregister(&coh901318_driver);
-}
-module_exit(coh901318_exit);
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Per Friden");
projects / platform / kernel / linux-rpi.git / commitdiff