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199 lines
7.7 KiB
C
199 lines
7.7 KiB
C
/******************************************************************************
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* *
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* License Agreement *
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* *
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* Copyright (c) 2006 Altera Corporation, San Jose, California, USA. *
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* All rights reserved. *
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* *
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* Permission is hereby granted, free of charge, to any person obtaining a *
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* copy of this software and associated documentation files (the "Software"), *
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* to deal in the Software without restriction, including without limitation *
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* the rights to use, copy, modify, merge, publish, distribute, sublicense, *
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* and/or sell copies of the Software, and to permit persons to whom the *
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* Software is furnished to do so, subject to the following conditions: *
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* *
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* The above copyright notice and this permission notice shall be included in *
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* all copies or substantial portions of the Software. *
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* *
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR *
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, *
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE *
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER *
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING *
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER *
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* DEALINGS IN THE SOFTWARE. *
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* *
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* This agreement shall be governed in all respects by the laws of the State *
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* of California and by the laws of the United States of America. *
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* *
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******************************************************************************/
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#ifndef __ALT_AVALON_JTAG_UART_H__
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#define __ALT_AVALON_JTAG_UART_H__
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#include <stddef.h>
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#include "sys/alt_alarm.h"
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#include "sys/alt_warning.h"
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#include "os/alt_sem.h"
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#include "os/alt_flag.h"
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#ifdef __cplusplus
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extern "C"
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{
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#endif /* __cplusplus */
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/*
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* If the user wants all drivers to be small rather than fast then make sure
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* this one is marked as needing to be small.
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*/
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#if defined ALT_USE_SMALL_DRIVERS && !defined ALTERA_AVALON_JTAG_UART_SMALL
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#define ALTERA_AVALON_JTAG_UART_SMALL
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#endif
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/*
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* If the user wants to ignore FIFO full error after timeout
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*/
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#if defined ALT_JTAG_UART_IGNORE_FIFO_FULL_ERROR && !defined ALTERA_AVALON_JTAG_UART_IGNORE_FIFO_FULL_ERROR
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#define ALTERA_AVALON_JTAG_UART_IGNORE_FIFO_FULL_ERROR
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#endif
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/*
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* Constants that can be overriden.
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*/
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#ifndef ALTERA_AVALON_JTAG_UART_DEFAULT_TIMEOUT
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#define ALTERA_AVALON_JTAG_UART_DEFAULT_TIMEOUT 10
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#endif
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#ifndef ALTERA_AVALON_JTAG_UART_BUF_LEN
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#define ALTERA_AVALON_JTAG_UART_BUF_LEN 2048
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#endif
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/*
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* ALT_JTAG_UART_READ_RDY and ALT_JTAG_UART_WRITE_RDY are the bitmasks
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* that define uC/OS-II event flags that are releated to this device.
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*
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* ALT_JTAG_UART_READ_RDY indicates that there is read data in the buffer
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* ready to be processed. ALT_JTAG_UART_WRITE_RDY indicates that the transmitter is
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* ready for more data.
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*/
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#define ALT_JTAG_UART_READ_RDY 0x1
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#define ALT_JTAG_UART_WRITE_RDY 0x2
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#define ALT_JTAG_UART_TIMEOUT 0x4
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/*
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* State structure definition. Each instance of the driver uses one
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* of these structures to hold its associated state.
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*/
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typedef struct altera_avalon_jtag_uart_state_s
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{
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unsigned int base;
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#ifndef ALTERA_AVALON_JTAG_UART_SMALL
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unsigned int timeout; /* Timeout until host is assumed inactive */
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alt_alarm alarm;
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unsigned int irq_enable;
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unsigned int host_inactive;
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ALT_SEM (read_lock)
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ALT_SEM (write_lock)
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ALT_FLAG_GRP (events)
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/* The variables below are volatile because they are modified by the
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* interrupt routine. Making them volatile and reading them atomically
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* means that we don't need any large critical sections.
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*/
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volatile unsigned int rx_in;
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unsigned int rx_out;
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unsigned int tx_in;
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volatile unsigned int tx_out;
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char rx_buf[ALTERA_AVALON_JTAG_UART_BUF_LEN];
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char tx_buf[ALTERA_AVALON_JTAG_UART_BUF_LEN];
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#endif /* !ALTERA_AVALON_JTAG_UART_SMALL */
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} altera_avalon_jtag_uart_state;
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/*
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* Macros used by alt_sys_init when the ALT file descriptor facility isn't used.
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*/
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#ifdef ALTERA_AVALON_JTAG_UART_SMALL
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#define ALTERA_AVALON_JTAG_UART_STATE_INSTANCE(name, state) \
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altera_avalon_jtag_uart_state state = \
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{ \
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name##_BASE, \
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}
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#define ALTERA_AVALON_JTAG_UART_STATE_INIT(name, state)
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#else /* !ALTERA_AVALON_JTAG_UART_SMALL */
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#define ALTERA_AVALON_JTAG_UART_STATE_INSTANCE(name, state) \
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altera_avalon_jtag_uart_state state = \
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{ \
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name##_BASE, \
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ALTERA_AVALON_JTAG_UART_DEFAULT_TIMEOUT, \
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}
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/*
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* Externally referenced routines
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*/
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extern void altera_avalon_jtag_uart_init(altera_avalon_jtag_uart_state* sp,
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int irq_controller_id, int irq);
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#define ALTERA_AVALON_JTAG_UART_STATE_INIT(name, state) \
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{ \
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if (name##_IRQ == ALT_IRQ_NOT_CONNECTED) \
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{ \
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ALT_LINK_ERROR ("Error: Interrupt not connected for " #name ". " \
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"You have selected the interrupt driven version of " \
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"the ALTERA Avalon JTAG UART driver, but the " \
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"interrupt is not connected for this device. You can " \
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"select a polled mode driver by checking the 'small " \
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"driver' option in the HAL configuration window, or " \
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"by using the -DALTERA_AVALON_JTAG_UART_SMALL " \
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"preprocessor flag."); \
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} \
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else \
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altera_avalon_jtag_uart_init(&state, \
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name##_IRQ_INTERRUPT_CONTROLLER_ID, \
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name##_IRQ); \
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}
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#endif /* ALTERA_AVALON_JTAG_UART_SMALL */
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/*
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* Include in case non-direct version of driver required.
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*/
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#include "altera_avalon_jtag_uart_fd.h"
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/*
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* Map alt_sys_init macros to direct or non-direct versions.
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*/
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#ifdef ALT_USE_DIRECT_DRIVERS
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#define ALTERA_AVALON_JTAG_UART_INSTANCE(name, state) \
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ALTERA_AVALON_JTAG_UART_STATE_INSTANCE(name, state)
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#define ALTERA_AVALON_JTAG_UART_INIT(name, state) \
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ALTERA_AVALON_JTAG_UART_STATE_INIT(name, state)
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#else /* !ALT_USE_DIRECT_DRIVERS */
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#define ALTERA_AVALON_JTAG_UART_INSTANCE(name, dev) \
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ALTERA_AVALON_JTAG_UART_DEV_INSTANCE(name, dev)
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#define ALTERA_AVALON_JTAG_UART_INIT(name, dev) \
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ALTERA_AVALON_JTAG_UART_DEV_INIT(name, dev)
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#endif /* ALT_USE_DIRECT_DRIVERS */
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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#endif /* __ALT_AVALON_JTAG_UART_H__ */
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