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Diffstat (limited to 'arch/tile/include/gxio/uart.h')
-rw-r--r-- | arch/tile/include/gxio/uart.h | 105 |
1 files changed, 0 insertions, 105 deletions
diff --git a/arch/tile/include/gxio/uart.h b/arch/tile/include/gxio/uart.h deleted file mode 100644 index 438ee7e46c7b..000000000000 --- a/arch/tile/include/gxio/uart.h +++ /dev/null @@ -1,105 +0,0 @@ -/* - * Copyright 2013 Tilera Corporation. All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation, version 2. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or - * NON INFRINGEMENT. See the GNU General Public License for - * more details. - */ - -#ifndef _GXIO_UART_H_ -#define _GXIO_UART_H_ - -#include "common.h" - -#include <hv/drv_uart_intf.h> -#include <hv/iorpc.h> - -/* - * - * An API for manipulating UART interface. - */ - -/* - * - * The Rshim allows access to the processor's UART interface. - */ - -/* A context object used to manage UART resources. */ -typedef struct { - - /* File descriptor for calling up to the hypervisor. */ - int fd; - - /* The VA at which our MMIO registers are mapped. */ - char *mmio_base; - -} gxio_uart_context_t; - -/* Request UART interrupts. - * - * Request that interrupts be delivered to a tile when the UART's - * Receive FIFO is written, or the Write FIFO is read. - * - * @param context Pointer to a properly initialized gxio_uart_context_t. - * @param bind_cpu_x X coordinate of CPU to which interrupt will be delivered. - * @param bind_cpu_y Y coordinate of CPU to which interrupt will be delivered. - * @param bind_interrupt IPI interrupt number. - * @param bind_event Sub-interrupt event bit number; a negative value can - * disable the interrupt. - * @return Zero if all of the requested UART events were successfully - * configured to interrupt. - */ -extern int gxio_uart_cfg_interrupt(gxio_uart_context_t *context, - int bind_cpu_x, - int bind_cpu_y, - int bind_interrupt, int bind_event); - -/* Initialize a UART context. - * - * A properly initialized context must be obtained before any of the other - * gxio_uart routines may be used. - * - * @param context Pointer to a gxio_uart_context_t, which will be initialized - * by this routine, if it succeeds. - * @param uart_index Index of the UART to use. - * @return Zero if the context was successfully initialized, else a - * GXIO_ERR_xxx error code. - */ -extern int gxio_uart_init(gxio_uart_context_t *context, int uart_index); - -/* Destroy a UART context. - * - * Once destroyed, a context may not be used with any gxio_uart routines - * other than gxio_uart_init(). After this routine returns, no further - * interrupts requested on this context will be delivered. The state and - * configuration of the pins which had been attached to this context are - * unchanged by this operation. - * - * @param context Pointer to a gxio_uart_context_t. - * @return Zero if the context was successfully destroyed, else a - * GXIO_ERR_xxx error code. - */ -extern int gxio_uart_destroy(gxio_uart_context_t *context); - -/* Write UART register. - * @param context Pointer to a gxio_uart_context_t. - * @param offset UART register offset. - * @param word Data will be wrote to UART reigister. - */ -extern void gxio_uart_write(gxio_uart_context_t *context, uint64_t offset, - uint64_t word); - -/* Read UART register. - * @param context Pointer to a gxio_uart_context_t. - * @param offset UART register offset. - * @return Data read from UART register. - */ -extern uint64_t gxio_uart_read(gxio_uart_context_t *context, uint64_t offset); - -#endif /* _GXIO_UART_H_ */ |