2 * Copyright (c) 2010 Marcel Moolenaar
3 * Copyright (c) 2001 Doug Rabson
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 #include <sys/param.h>
31 #include <machine/cpufunc.h>
32 #include <machine/pci_cfgreg.h>
33 #include <machine/sal.h>
36 pci_sal_address(int dom, int bus, int slot, int func, int reg)
41 if (dom >= 0 && dom <= 255 && bus >= 0 && bus <= 255 &&
42 slot >= 0 && slot <= 31 && func >= 0 && func <= 7 &&
43 reg >= 0 && reg <= 255) {
44 addr = ((u_long)dom << 24) | ((u_long)bus << 16) |
45 ((u_long)slot << 11) | ((u_long)func << 8) | (u_long)reg;
51 pci_valid_access(int reg, int len)
55 ok = ((len == 1 || len == 2 || len == 4) && (reg & (len - 1)) == 0)
67 pci_cfgregread(int bus, int slot, int func, int reg, int len)
69 struct ia64_sal_result res;
73 addr = pci_sal_address(0, bus, slot, func, reg);
77 if (!pci_valid_access(reg, len))
81 res = ia64_sal_entry(SAL_PCI_CONFIG_READ, addr, len, 0, 0, 0, 0, 0);
84 return ((res.sal_status < 0) ? ~0 : res.sal_result[0]);
88 pci_cfgregwrite(int bus, int slot, int func, int reg, uint32_t data, int len)
90 struct ia64_sal_result res;
94 addr = pci_sal_address(0, bus, slot, func, reg);
98 if (!pci_valid_access(reg, len))
102 res = ia64_sal_entry(SAL_PCI_CONFIG_WRITE, addr, len, data, 0, 0, 0, 0);