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https://git.rtems.org/rtems-libbsd/
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b7e626109c
The glue layer provides the necessary function so that the Tsi148 driver in the BSP can use the PCI functionality from libbsd.
144 lines
3.8 KiB
C
144 lines
3.8 KiB
C
/* SPDX-License-Identifier: BSD-2-Clause */
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/*
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* Copyright (C) 2023 embedded brains GmbH
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* This file is a glue layer that allows the TSI148 RTEMS VME driver to use the
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* libbsd PCI support.
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*/
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typedef void FILE;
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#define __INSIDE_RTEMS_BSP__
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#include <rtems/pci.h>
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#include <machine/rtems-bsd-kernel-space.h>
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#include <sys/types.h>
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#include <sys/bus.h>
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#include <sys/pciio.h>
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#include <dev/pci/pcivar.h>
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#undef pci_find_device
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static device_t dev;
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static int
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read_config_byte(unsigned char bus, unsigned char slot, unsigned char func,
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unsigned char reg, uint8_t *val)
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{
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*val = (uint8_t)pci_read_config(dev, reg, 1);
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return 0;
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}
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static int
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read_config_word(unsigned char bus, unsigned char slot, unsigned char func,
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unsigned char reg, uint16_t *val)
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{
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*val = (uint16_t)pci_read_config(dev, reg, 2);
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return 0;
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}
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static int
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read_config_dword(unsigned char bus, unsigned char slot, unsigned char func,
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unsigned char reg, uint32_t *val)
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{
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*val = pci_read_config(dev, reg, 4);
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return 0;
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}
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static int
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write_config_byte(unsigned char bus, unsigned char slot, unsigned char func,
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unsigned char reg, uint8_t val)
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{
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pci_write_config(dev, reg, val, 1);
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return 0;
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}
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static int
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write_config_word(unsigned char bus, unsigned char slot, unsigned char func,
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unsigned char reg, uint16_t val)
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{
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pci_write_config(dev, reg, val, 2);
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return 0;
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}
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static int
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write_config_dword(unsigned char bus, unsigned char slot, unsigned char func,
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unsigned char reg, uint32_t val)
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{
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pci_write_config(dev, reg, val, 4);
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return 0;
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}
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static const pci_config_access_functions pci_functions = {
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.read_config_byte = read_config_byte,
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.read_config_word = read_config_word,
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.read_config_dword = read_config_dword,
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.write_config_byte = write_config_byte,
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.write_config_word = write_config_word,
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.write_config_dword = write_config_dword
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};
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rtems_pci_config_t BSP_pci_configuration = {
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.pci_functions = &pci_functions
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};
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int
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pci_find_device(unsigned short vendorid, unsigned short deviceid,
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int instance, int *pbus, int *pdev, int *pfun)
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{
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struct pci_devinfo *dinfo;
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if (instance != 0) {
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return -1;
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}
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if (dev != NULL) {
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return -1;
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}
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dev = _bsd_pci_find_device(vendorid, deviceid);
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if (dev == NULL) {
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return -1;
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}
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dinfo = device_get_ivars(dev);
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*pbus = dinfo->conf.pc_sel.pc_bus;
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*pdev = dinfo->conf.pc_sel.pc_dev;
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*pfun = dinfo->conf.pc_sel.pc_func;
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return 0;
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}
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#include <bsp.h>
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#ifdef LIBBSP_POWERPC_QORIQ_BSP_H
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#include <bsp/VMEConfig.h>
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uintptr_t bsp_vme_pcie_base_address = 0;
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unsigned short (*_BSP_clear_vmebridge_errors)(int) = NULL;
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#endif
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