cpukit/libpci/pci_access_io.c

0001 /* SPDX-License-Identifier: BSD-2-Clause */
0002
0003 /*  PCI Access Library
0004  *
0005  *  COPYRIGHT (c) 2010 Cobham Gaisler AB.
0006  *
0007  * Redistribution and use in source and binary forms, with or without
0008  * modification, are permitted provided that the following conditions
0009  * are met:
0010  * 1. Redistributions of source code must retain the above copyright
0011  *    notice, this list of conditions and the following disclaimer.
0012  * 2. Redistributions in binary form must reproduce the above copyright
0013  *    notice, this list of conditions and the following disclaimer in the
0014  *    documentation and/or other materials provided with the distribution.
0015  *
0016  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
0017  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
0018  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
0019  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
0020  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
0021  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
0022  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
0023  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
0024  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
0025  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
0026  * POSSIBILITY OF SUCH DAMAGE.
0027  */
0028
0029 #include <pci.h>
0030 #include <pci/access.h>
0031
0032 /* Read a 8-bit register over PCI I/O Space */
0033 uint8_t pci_io_r8(uint32_t adr)
0034 {
0035     return pci_access_ops.io.read8((uint8_t *)adr);
0036 }
0037
0038 /* Read a 16-bit I/O Register */
0039 uint16_t pci_io_r16(uint32_t adr)
0040 {
0041     return pci_access_ops.io.read16((uint16_t *)adr);
0042 }
0043
0044 /* Read a 32-bit I/O Register */
0045 uint32_t pci_io_r32(uint32_t adr)
0046 {
0047     return pci_access_ops.io.read32((uint32_t *)adr);
0048 }
0049
0050 /* Write a 8-bit I/O Register */
0051 void pci_io_w8(uint32_t adr, uint8_t data)
0052 {
0053     pci_access_ops.io.write8((uint8_t *)adr, data);
0054 }
0055
0056 /* Write a 16-bit I/O Register */
0057 void pci_io_w16(uint32_t adr, uint16_t data)
0058 {
0059     pci_access_ops.io.write16((uint16_t *)adr, data);
0060 }
0061
0062 /* Write a 32-bit I/O Register */
0063 void pci_io_w32(uint32_t adr, uint32_t data)
0064 {
0065     pci_access_ops.io.write32((uint32_t *)adr, data);
0066 }