85 lines
2.2 KiB
C
85 lines
2.2 KiB
C
/*
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* Copyright (c) 2020 Raspberry Pi (Trading) Ltd.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#ifndef _HARDWARE_STRUCTS_DMA_H
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#define _HARDWARE_STRUCTS_DMA_H
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#include "hardware/address_mapped.h"
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#include "hardware/platform_defs.h"
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#include "hardware/regs/dma.h"
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#include "pico/assert.h"
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// PICO_CONFIG: PARAM_ASSERTIONS_ENABLED_DMA, Enable/disable DMA assertions, type=bool, default=0, group=hardware_dma
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#ifndef PARAM_ASSERTIONS_ENABLED_DMA
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#define PARAM_ASSERTIONS_ENABLED_DMA 0
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#endif
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typedef struct {
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io_rw_32 read_addr;
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io_rw_32 write_addr;
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io_rw_32 transfer_count;
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io_rw_32 ctrl_trig;
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io_rw_32 al1_ctrl;
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io_rw_32 al1_read_addr;
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io_rw_32 al1_write_addr;
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io_rw_32 al1_transfer_count_trig;
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io_rw_32 al2_ctrl;
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io_rw_32 al2_transfer_count;
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io_rw_32 al2_read_addr;
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io_rw_32 al2_write_addr_trig;
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io_rw_32 al3_ctrl;
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io_rw_32 al3_write_addr;
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io_rw_32 al3_transfer_count;
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io_rw_32 al3_read_addr_trig;
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} dma_channel_hw_t;
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typedef struct {
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dma_channel_hw_t ch[NUM_DMA_CHANNELS];
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uint32_t _pad0[16 * (16 - NUM_DMA_CHANNELS)];
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io_ro_32 intr;
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io_rw_32 inte0;
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io_rw_32 intf0;
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io_rw_32 ints0;
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uint32_t _pad1[1];
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io_rw_32 inte1;
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io_rw_32 intf1;
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io_rw_32 ints1;
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io_rw_32 timer[4];
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io_wo_32 multi_channel_trigger;
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io_rw_32 sniff_ctrl;
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io_rw_32 sniff_data;
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uint32_t _pad2[1];
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io_ro_32 fifo_levels;
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io_wo_32 abort;
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} dma_hw_t;
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typedef struct {
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struct dma_debug_hw_channel {
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io_ro_32 ctrdeq;
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io_ro_32 tcr;
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uint32_t pad[14];
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} ch[NUM_DMA_CHANNELS];
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} dma_debug_hw_t;
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#define dma_hw ((dma_hw_t *const)DMA_BASE)
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#define dma_debug_hw ((dma_debug_hw_t *const)(DMA_BASE + DMA_CH0_DBG_CTDREQ_OFFSET))
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static inline void check_dma_channel_param(uint channel) {
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#if PARAM_ASSERTIONS_ENABLED(DMA)
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// this method is used a lot by inline functions so avoid code bloat by deferring to function
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extern void check_dma_channel_param_impl(uint channel);
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check_dma_channel_param_impl(channel);
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#endif
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}
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inline static dma_channel_hw_t *dma_channel_hw_addr(uint channel) {
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check_dma_channel_param(channel);
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return &dma_hw->ch[channel];
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}
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#endif
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