1 files changed, 96 insertions, 0 deletions
diff --git a/contrib/syslinux-4.02/gpxe/src/arch/i386/core/x86_io.c b/contrib/syslinux-4.02/gpxe/src/arch/i386/core/x86_io.c
new file mode 100644
index 0000000..d2c363b
--- /dev/null
+++ b/contrib/syslinux-4.02/gpxe/src/arch/i386/core/x86_io.c
@@ -0,0 +1,96 @@
+/*
+ * Copyright (C) 2008 Michael Brown <mbrown@fensystems.co.uk>.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+#include <gpxe/io.h>
+#include <gpxe/x86_io.h>
+
+/** @file
+ *
+ * gPXE I/O API for x86
+ *
+ */
+
+/**
+ * Read 64-bit qword from memory-mapped device
+ *
+ * @v io_addr		I/O address
+ * @ret data		Value read
+ *
+ * This routine uses MMX instructions.
+ */
+static uint64_t x86_readq ( volatile uint64_t *io_addr ) {
+	uint64_t data;
+        __asm__ __volatile__ ( "pushl %%edx\n\t"
+			       "pushl %%eax\n\t"
+			       "movq (%1), %%mm0\n\t"
+			       "movq %%mm0, (%%esp)\n\t"
+			       "popl %%eax\n\t"
+			       "popl %%edx\n\t"
+			       "emms\n\t"
+                               : "=A" ( data ) : "r" ( io_addr ) );
+	return data;
+}
+
+/**
+ * Write 64-bit qword to memory-mapped device
+ *
+ * @v data		Value to write
+ * @v io_addr		I/O address
+ *
+ * This routine uses MMX instructions.
+ */
+static void x86_writeq ( uint64_t data, volatile uint64_t *io_addr ) {
+	__asm__ __volatile__ ( "pushl %%edx\n\t"
+			       "pushl %%eax\n\t"
+			       "movq (%%esp), %%mm0\n\t"
+			       "movq %%mm0, (%1)\n\t"
+			       "popl %%eax\n\t"
+			       "popl %%edx\n\t"
+			       "emms\n\t"
+			       : : "A" ( data ), "r" ( io_addr ) );
+}
+
+PROVIDE_IOAPI_INLINE ( x86, phys_to_bus );
+PROVIDE_IOAPI_INLINE ( x86, bus_to_phys );
+PROVIDE_IOAPI_INLINE ( x86, ioremap );
+PROVIDE_IOAPI_INLINE ( x86, iounmap );
+PROVIDE_IOAPI_INLINE ( x86, io_to_bus );
+PROVIDE_IOAPI_INLINE ( x86, readb );
+PROVIDE_IOAPI_INLINE ( x86, readw );
+PROVIDE_IOAPI_INLINE ( x86, readl );
+PROVIDE_IOAPI ( x86, readq, x86_readq );
+PROVIDE_IOAPI_INLINE ( x86, writeb );
+PROVIDE_IOAPI_INLINE ( x86, writew );
+PROVIDE_IOAPI_INLINE ( x86, writel );
+PROVIDE_IOAPI ( x86, writeq, x86_writeq );
+PROVIDE_IOAPI_INLINE ( x86, inb );
+PROVIDE_IOAPI_INLINE ( x86, inw );
+PROVIDE_IOAPI_INLINE ( x86, inl );
+PROVIDE_IOAPI_INLINE ( x86, outb );
+PROVIDE_IOAPI_INLINE ( x86, outw );
+PROVIDE_IOAPI_INLINE ( x86, outl );
+PROVIDE_IOAPI_INLINE ( x86, insb );
+PROVIDE_IOAPI_INLINE ( x86, insw );
+PROVIDE_IOAPI_INLINE ( x86, insl );
+PROVIDE_IOAPI_INLINE ( x86, outsb );
+PROVIDE_IOAPI_INLINE ( x86, outsw );
+PROVIDE_IOAPI_INLINE ( x86, outsl );
+PROVIDE_IOAPI_INLINE ( x86, iodelay );
+PROVIDE_IOAPI_INLINE ( x86, mb );