diff options
Diffstat (limited to 'lib/i386-io-djgpp.h')
-rw-r--r-- | lib/i386-io-djgpp.h | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/lib/i386-io-djgpp.h b/lib/i386-io-djgpp.h new file mode 100644 index 0000000..53f2f4e --- /dev/null +++ b/lib/i386-io-djgpp.h @@ -0,0 +1,44 @@ +/* + * The PCI Library -- Access to i386 I/O ports on DJGPP + * + * Copyright (c) 2010, 2017 Rudolf Marek <r.marek@assembler.cz> + * + * Can be freely distributed and used under the terms of the GNU GPL. + */ + +#include <pc.h> +#include <dos.h> +#define outb(x,y) outportb(y, x) +#define outw(x,y) outportw(y, x) +#define outl(x,y) outportl(y, x) + +#define inb inportb +#define inw inportw +#define inl inportl + +static int irq_enabled; + +static int +intel_setup_io(struct pci_access *a UNUSED) +{ + return 1; +} + +static inline void +intel_cleanup_io(struct pci_access *a UNUSED) +{ +} + +static inline void intel_io_lock(void) +{ + asm volatile("" : : : "memory"); + irq_enabled = disable(); +} + +static inline void intel_io_unlock(void) +{ + asm volatile("" : : : "memory"); + if (irq_enabled) { + enable(); + } +} |