diff options
Diffstat (limited to 'chip/g/usb_spi.c')
| -rw-r--r-- | chip/g/usb_spi.c | 156 |
1 files changed, 0 insertions, 156 deletions
diff --git a/chip/g/usb_spi.c b/chip/g/usb_spi.c deleted file mode 100644 index d7f7ff031f..0000000000 --- a/chip/g/usb_spi.c +++ /dev/null @@ -1,156 +0,0 @@ -/* Copyright 2016 The Chromium OS Authors. All rights reserved. - * Use of this source code is governed by a BSD-style license that can be - * found in the LICENSE file. - */ - -#include "ccd_config.h" -#include "common.h" -#include "link_defs.h" -#include "gpio.h" -#include "registers.h" -#include "spi.h" -#include "spi_flash.h" -#include "usb_descriptor.h" -#include "usb_spi.h" -#include "util.h" - -#ifdef CONFIG_STREAM_SIGNATURE -#include "signing.h" -#endif - -#define CPUTS(outstr) cputs(CC_USB, outstr) -#define CPRINTS(format, args...) cprints(CC_USB, format, ## args) - -static int16_t usb_spi_map_error(int error) -{ - switch (error) { - case EC_SUCCESS: - return USB_SPI_SUCCESS; - case EC_ERROR_TIMEOUT: - return USB_SPI_TIMEOUT; - case EC_ERROR_BUSY: - return USB_SPI_BUSY; - default: - return USB_SPI_UNKNOWN_ERROR | (error & 0x7fff); - } -} - -static uint16_t usb_spi_read_packet(struct usb_spi_config const *config) -{ - return QUEUE_REMOVE_UNITS(config->consumer.queue, config->buffer, - queue_count(config->consumer.queue)); -} - -static void usb_spi_write_packet(struct usb_spi_config const *config, - uint8_t count) -{ -#ifdef CONFIG_STREAM_SIGNATURE - /* - * This hook allows mn50 to sign SPI data read from newly - * manufactured H1 devieces. The data is added to a running - * hash until a completion message is received. - */ - sig_append(stream_spi, config->buffer, count); -#endif - - QUEUE_ADD_UNITS(config->tx_queue, config->buffer, count); -} - -void usb_spi_deferred(struct usb_spi_config const *config) -{ - uint16_t count; - int write_count; - int read_count; - int read_length; - uint16_t res; - int rv = EC_SUCCESS; - - /* - * If our overall enabled state has changed we call the board specific - * enable or disable routines and save our new state. - */ - int enabled = !!(config->state->enabled_host & - config->state->enabled_device); - - if (enabled ^ config->state->enabled) { - if (enabled) - rv = usb_spi_board_enable(config); - else - usb_spi_board_disable(config); - - /* Only update our state if we were successful. */ - if (rv == EC_SUCCESS) - config->state->enabled = enabled; - } - - /* - * And if there is a USB packet waiting we process it and generate a - * response. - */ - count = usb_spi_read_packet(config); - write_count = config->buffer[0]; - read_count = config->buffer[1]; - - /* Handle SPI_READBACK_ALL case */ - if (read_count == 255) { - /* Handle simultaneously clocked RX and TX */ - read_count = SPI_READBACK_ALL; - read_length = write_count; - } else { - /* Normal case */ - read_length = read_count; - } - - if (!count || (!read_count && !write_count) || - (!write_count && read_count == (uint8_t)SPI_READBACK_ALL)) - return; - - if (!config->state->enabled) { - res = USB_SPI_DISABLED; - } else if (write_count > USB_SPI_MAX_WRITE_COUNT || - write_count != (count - HEADER_SIZE)) { - res = USB_SPI_WRITE_COUNT_INVALID; - } else if (read_length > USB_SPI_MAX_READ_COUNT) { - res = USB_SPI_READ_COUNT_INVALID; - } else { - res = usb_spi_map_error( - spi_transaction(SPI_FLASH_DEVICE, - config->buffer + HEADER_SIZE, - write_count, - config->buffer + HEADER_SIZE, - read_count)); - } - - memcpy(config->buffer, &res, HEADER_SIZE); - usb_spi_write_packet(config, read_length + HEADER_SIZE); -} - -static void usb_spi_written(struct consumer const *consumer, size_t count) -{ - struct usb_spi_config const *config = - DOWNCAST(consumer, struct usb_spi_config, consumer); - - hook_call_deferred(config->deferred, 0); -} - -struct consumer_ops const usb_spi_consumer_ops = { - .written = usb_spi_written, -}; - -void usb_spi_enable(struct usb_spi_config const *config, int enabled) -{ - config->state->enabled_device = 0; - if (enabled) { -#ifdef CONFIG_CASE_CLOSED_DEBUG_V1 - if (ccd_is_cap_enabled(CCD_CAP_AP_FLASH)) - config->state->enabled_device |= USB_SPI_AP; - if (ccd_is_cap_enabled(CCD_CAP_EC_FLASH)) - config->state->enabled_device |= USB_SPI_EC; -#else - config->state->enabled_device = USB_SPI_ALL; -#endif - } - - hook_call_deferred(config->deferred, 0); -} - |