projects / thirdparty / pciutils.git / blame
| Commit | Line | Data |
|---|---|---|
| 5c5ce192 RM |
1 | /* |
| 2 | * The PCI Library -- Access to i386 I/O ports on DJGPP | |
| 3 | * | |
| 4 | * Copyright (c) 2010, 2017 Rudolf Marek <r.marek@assembler.cz> | |
| 5 | * | |
| 61829219 MM |
6 | * Can be freely distributed and used under the terms of the GNU GPL v2+ |
| 7 | * | |
| 8 | * SPDX-License-Identifier: GPL-2.0-or-later | |
| 5c5ce192 RM |
9 | */ |
| 10 | ||
| 11 | #include <pc.h> | |
| 12 | #include <dos.h> | |
| 13 | #define outb(x,y) outportb(y, x) | |
| 14 | #define outw(x,y) outportw(y, x) | |
| 15 | #define outl(x,y) outportl(y, x) | |
| 16 | ||
| 17 | #define inb inportb | |
| 18 | #define inw inportw | |
| 19 | #define inl inportl | |
| 20 | ||
| 21 | static int irq_enabled; | |
| 22 | ||
| 23 | static int | |
| 24 | intel_setup_io(struct pci_access *a UNUSED) | |
| 25 | { | |
| 26 | return 1; | |
| 27 | } | |
| 28 | ||
| b9803586 | 29 | static inline void |
| 5c5ce192 RM |
30 | intel_cleanup_io(struct pci_access *a UNUSED) |
| 31 | { | |
| 5c5ce192 RM |
32 | } |
| 33 | ||
| 34 | static inline void intel_io_lock(void) | |
| 35 | { | |
| 36 | asm volatile("" : : : "memory"); | |
| 37 | irq_enabled = disable(); | |
| 38 | } | |
| 39 | ||
| 40 | static inline void intel_io_unlock(void) | |
| 41 | { | |
| 42 | asm volatile("" : : : "memory"); | |
| 43 | if (irq_enabled) { | |
| 44 | enable(); | |
| 45 | } | |
| 46 | } |