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https://github.com/Telecominfraproject/OpenCellular.git
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0059070b22
Guarded by CONFIG_STREAM_SIGNING Comes at 10K cost in SRAM Used by nm50 Signed-off-by: mschilder@google.com BRANCH=cr50 BUG=none TEST=sign nm50 target dump_state 115200 output w/o overruns Change-Id: I4db2dec4de8afbeba68d1bc72f43a91fc134ff85 Reviewed-on: https://chromium-review.googlesource.com/823264 Commit-Ready: Marius Schilder <mschilder@chromium.org> Tested-by: Marius Schilder <mschilder@chromium.org> Reviewed-by: Marius Schilder <mschilder@chromium.org> Reviewed-by: Vadim Bendebury <vbendeb@chromium.org>
92 lines
2.6 KiB
C
92 lines
2.6 KiB
C
/* Copyright 2016 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "consumer.h"
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#include "producer.h"
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#include "registers.h"
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#include "task.h"
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#include "board.h"
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#ifndef __CROS_FORWARD_UART_H
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#define __CROS_FORWARD_UART_H
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#ifdef CONFIG_STREAM_SIGNATURE
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/*
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* When configured for signing over streaming data, call the consumer handler
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* directly to help avoid incoming uart overruns.
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* Note this will run under interrupt handler so consumer beware.
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*/
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#define CONFIGURE_INTERRUPTS__rx_int(NAME) send_data_to_usb(&NAME)
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#else
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#define CONFIGURE_INTERRUPTS__rx_int(NAME) hook_call_deferred(NAME.deferred, 0)
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#endif
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struct usart_config {
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int uart;
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struct producer const producer;
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struct consumer const consumer;
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const struct deferred_data *deferred;
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};
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extern struct consumer_ops const uart_consumer_ops;
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extern struct producer_ops const uart_producer_ops;
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#define CONFIGURE_INTERRUPTS(NAME, \
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RXINT, \
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TXINT) \
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void CONCAT2(NAME, _rx_int_)(void); \
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void CONCAT2(NAME, _tx_int_)(void); \
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DECLARE_IRQ(RXINT, CONCAT2(NAME, _rx_int_), 1); \
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DECLARE_IRQ(TXINT, CONCAT2(NAME, _tx_int_), 1); \
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void CONCAT2(NAME, _tx_int_)(void) \
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{ \
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/* Clear transmit interrupt status */ \
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GR_UART_ISTATECLR(NAME.uart) = \
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GC_UART_ISTATECLR_TX_MASK; \
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/* Fill output FIFO */ \
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get_data_from_usb(&NAME); \
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} \
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void CONCAT2(NAME, _rx_int_)(void) \
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{ \
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/* Clear receive interrupt status */ \
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GR_UART_ISTATECLR(NAME.uart) = \
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GC_UART_ISTATECLR_RX_MASK; \
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/* Read input FIFO until empty */ \
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CONFIGURE_INTERRUPTS__rx_int(NAME); \
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}
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#define USART_CONFIG(NAME, \
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UART, \
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RX_QUEUE, \
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TX_QUEUE) \
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static void CONCAT2(NAME, _deferred_)(void); \
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DECLARE_DEFERRED(CONCAT2(NAME, _deferred_)); \
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struct usart_config const NAME = { \
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.uart = UART, \
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.consumer = { \
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.queue = &TX_QUEUE, \
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.ops = &uart_consumer_ops, \
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}, \
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.producer = { \
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.queue = &RX_QUEUE, \
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.ops = &uart_producer_ops, \
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}, \
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.deferred = &CONCAT2(NAME, _deferred__data), \
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}; \
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static void CONCAT2(NAME, _deferred_)(void) \
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{ \
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send_data_to_usb(&NAME); \
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} \
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/* Read data from UART and add it to the producer queue */
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void send_data_to_usb(struct usart_config const *config);
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/* Read data from the consumer queue and send it to the UART */
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void get_data_from_usb(struct usart_config const *config);
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#endif /* __CROS_FORWARD_UART_H */
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