1 /* $NetBSD: pci_smccc.h,v 1.1 2021/08/07 21:23:37 jmcneill Exp $ */ 2 3 /*- 4 * Copyright (c) 2021 Jared McNeill <jmcneill@invisible.ca> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #ifndef _PCI_SMCCC_H 30 #define _PCI_SMCCC_H 31 32 #define PCI_SMCCC_SUCCESS(_r) (((_r) & 0x80000000) == 0) 33 34 #define PCI_SMCCC_SBDF(s, b, d, f) \ 35 (((unsigned)(s) << 16) | ((b) << 8) | ((d) << 3) | (f)) 36 37 #define PCI_SMCCC_ACCESS_32BIT 4 38 39 int pci_smccc_version(void); 40 int pci_smccc_features(uint32_t); 41 int pci_smccc_read(uint32_t, uint32_t, uint32_t, uint32_t *); 42 int pci_smccc_write(uint32_t, uint32_t, uint32_t, uint32_t); 43 int pci_smccc_get_seg_info(uint16_t, uint8_t *, uint8_t *, uint16_t *); 44 45 #endif /* !_PCI_SMCCC_H */ 46