Mirrors_Framework/nuttx
1
0
Fork 0
mirror of https://github.com/apache/nuttx.git synced 2026-05-23 06:39:01 +08:00
Code Issues Actions 1 Packages Projects Releases Wiki Activity

arch/arm/src/imxrt: Add XBAR Support

Browse Source
This commit is contained in:
David Sidrane
2019-01-29 17:24:27 -06:00
committed by Gregory Nutt
parent 2fc9b7acfc
commit f7003f8ef2
4 changed files with 728 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files
arch/arm/src/imxrt/Make.defs
+1 -1
View File
@@ -99,7 +99,7 @@ CHIP_ASRCS =
CHIP_CSRCS = imxrt_allocateheap.c imxrt_start.c imxrt_clockconfig.c
CHIP_CSRCS += imxrt_periphclks.c imxrt_irq.c imxrt_clrpend.c imxrt_gpio.c
CHIP_CSRCS += imxrt_daisy.c imxrt_wdog.c imxrt_iomuxc.c imxrt_serial.c
CHIP_CSRCS += imxrt_lowputc.c
CHIP_CSRCS += imxrt_xbar.c imxrt_lowputc.c
# Configuration-dependent i.MX RT files
arch/arm/src/imxrt/chip/imxrt_xbar.h
+63
View File
@@ -0,0 +1,63 @@
/************************************************************************************
* arch/arm/src/imxrt/chip/imxrt_abar.h
*
* Copyright (C) 2019 Gregory Nutt. All rights reserved.
* Authors: Gregory Nutt <gnutt@nuttx.org>
* David Sidrane <david_s5@nscdg.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************************************/
#ifndef __ARCH_ARM_SRC_IMXRT_CHIP_IMXRT_XBAR_H
#define __ARCH_ARM_SRC_IMXRT_CHIP_IMXRT_XBAR_H
/************************************************************************************
* Included Files
************************************************************************************/
#include <nuttx/config.h>
#include <stdint.h>
#include "chip/imxrt_memorymap.h"
/************************************************************************************
* Pre-processor Definitions
************************************************************************************/
#define IMXRT_SEL_PER_REG 2
#define IMXRT_SEL0_SHIFTS 0 /* Bits 0-6: Input (XBARA_INn) to be muxed to
* XBARA_OUTm */
#define IMXRT_SEL0_MASK (0x7f << IMXRT_SEL0_SHIFTS)
/* Bit 7: Reserved */
#define IMXRT_SEL1_SHIFTS 8 /* Bits 8-14: Input (XBARA_INn) to be muxed to
* XBARA_OUTm */
#define IMXRT_SEL1_MASK (0x7f << IMXRT_SEL1_SHIFTS)
/* Bit 15 Reserved */
#endif /* __ARCH_ARM_SRC_IMXRT_CHIP_IMXRT_XBAR_H */
arch/arm/src/imxrt/imxrt_xbar.c
+125
View File
@@ -0,0 +1,125 @@
/****************************************************************************
* arch/arm/src/imxrt/imxrt_xbar.c
*
* Copyright (C) 2019 Gregory Nutt. All rights reserved.
* Author: David Sidrane <david_s5@nscdg.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <stdint.h>
#include <errno.h>
#include "chip.h"
#include "up_arch.h"
#include "imxrt_xbar.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/****************************************************************************
* Private Data
****************************************************************************/
static const uintptr_t g_xbars_addresses[] =
{
IMXRT_XBAR1_BASE,
IMXRT_XBAR2_BASE,
IMXRT_XBAR3_BASE
};
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: imxrt_xbar_connect
*
* Description:
* This function maps the input_index of the cross bar to the output.
*
* input_index Parameters:
* mux_index_out - XBAR Output and mux_select choice.
* mux_index_input - XBAR Input and input_index choice.
*
* Returned Value:
* OK on success; Negated errno on failure.
*
****************************************************************************/
int imxrt_xbar_connect(uint16_t mux_index_out, uint16_t mux_index_input)
{
uintptr_t address;
uint16_t mux_select;
uint16_t mux_input;
uint16_t xbar_index;
uint16_t clearbits;
int retval;
retval = -EINVAL;
mux_select = IMXRT_SEL(mux_index_out);
mux_input = IMXRT_SEL(mux_index_input);
xbar_index = IMXRT_XBAR(mux_index_out);
clearbits = IMXRT_SEL0_MASK;
/* Verify:
* 1) The Xbar index is valid.
* 2) In and out are on the same Xbar.
* 3) Output index is an output.
* 4) Input index is input.
*/
if (xbar_index < sizeof(g_xbars_addresses) / sizeof(g_xbars_addresses[0]) &&
(mux_index_out & XBAR_OUTPUT) == XBAR_OUTPUT &&
(mux_index_input & XBAR_INPUT) == XBAR_INPUT)
{
address = g_xbars_addresses[xbar_index];
address += (mux_select / IMXRT_SEL_PER_REG) * sizeof(uint16_t);
/* There are 2 selects per Register LSB is even selects and MSB is odd */
if (mux_select & 1)
{
clearbits <<= IMXRT_SEL1_SHIFTS;
mux_input <<= IMXRT_SEL1_SHIFTS;
}
modifyreg16(address, clearbits, mux_input);
retval = OK;
}
return retval;
}
arch/arm/src/imxrt/imxrt_xbar.h
+539
View File
File diff suppressed because it is too large Load Diff