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123 lines
3.2 KiB
C
123 lines
3.2 KiB
C
#include <machine/rtems-bsd-kernel-space.h>
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/**
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* @file
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*
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* @ingroup rtems_bsd_rtems
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*
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* @brief This is the rtems version for the FreeBSD cpu specific
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* file pci_cfgreg.c. Please note that the Ether Express is not
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* supported in this version.
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*/
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/*
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* COPYRIGHT (c) 2012. On-Line Applications Research Corporation (OAR).
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* All rights reserved.
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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 AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* 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 AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <rtems/bsd/sys/param.h>
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#include <sys/systm.h>
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#include <sys/bus.h>
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#include <rtems/bsd/sys/lock.h>
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#include <sys/kernel.h>
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#include <sys/malloc.h>
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#include <sys/sysctl.h>
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#include <dev/pci/pcivar.h>
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#include <dev/pci/pcireg.h>
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#define pci_find_device rtems_pci_find_device
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#if HAVE_RTEMS_PCI_H
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#include <rtems/pci.h>
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#endif
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/*
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* Initialise access to PCI configuration space
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*/
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int
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pci_cfgregopen(void)
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{
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return(1);
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}
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/*
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* Read configuration space register
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*/
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u_int32_t
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pci_cfgregread(int bus, int slot, int func, int reg, int bytes)
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{
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#if HAVE_RTEMS_PCI_H
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u_int32_t value;
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uint8_t v8;
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uint16_t v16;
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uint32_t v32;
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int data;
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switch (bytes) {
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case 1:
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data = pci_read_config_byte( bus, slot, func, reg, &v8 );
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value = v8;
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break;
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case 2:
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data = pci_read_config_word( bus, slot, func, reg, &v16 );
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value = v16;
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break;
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case 4:
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data = pci_read_config_dword( bus, slot, func, reg, &v32 );
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value = v32;
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break;
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}
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return value;
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#else
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return 0;
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#endif
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}
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/*
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* Write configuration space register
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*/
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void
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pci_cfgregwrite(int bus, int slot, int func, int reg, u_int32_t data, int bytes)
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{
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#if HAVE_RTEMS_PCI_H
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uint8_t v8 = data & 0xff;
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uint16_t v16 = data & 0xffff;
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uint32_t v32 = data;
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switch (bytes) {
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case 1:
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pci_write_config_byte( bus, slot, func, reg, v8 );
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break;
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case 2:
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pci_write_config_word( bus, slot, func, reg, v16 );
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break;
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case 4:
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pci_write_config_dword( bus, slot, func, reg, v32 );
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break;
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}
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#endif
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}
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