Adding upstream version 4.19.249.upstream/4.19.249upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 56 insertions, 0 deletions

diff --git a/arch/mips/include/asm/vga.h b/arch/mips/include/asm/vga.h
new file mode 100644
index 000000000..0136e0366
--- /dev/null
+++ b/arch/mips/include/asm/vga.h
@@ -0,0 +1,56 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ *	Access to VGA videoram
+ *
+ *	(c) 1998 Martin Mares <mj@ucw.cz>
+ */
+#ifndef _ASM_VGA_H
+#define _ASM_VGA_H
+
+#include <linux/string.h>
+#include <asm/addrspace.h>
+#include <asm/byteorder.h>
+
+/*
+ *	On the PC, we can just recalculate addresses and then
+ *	access the videoram directly without any black magic.
+ */
+
+#define VGA_MAP_MEM(x, s)	CKSEG1ADDR(0x10000000L + (unsigned long)(x))
+
+#define vga_readb(x)	(*(x))
+#define vga_writeb(x, y)	(*(y) = (x))
+
+#define VT_BUF_HAVE_RW
+/*
+ *  These are only needed for supporting VGA or MDA text mode, which use little
+ *  endian byte ordering.
+ *  In other cases, we can optimize by using native byte ordering and
+ *  <linux/vt_buffer.h> has already done the right job for us.
+ */
+
+#undef scr_writew
+#undef scr_readw
+
+static inline void scr_writew(u16 val, volatile u16 *addr)
+{
+	*addr = cpu_to_le16(val);
+}
+
+static inline u16 scr_readw(volatile const u16 *addr)
+{
+	return le16_to_cpu(*addr);
+}
+
+static inline void scr_memsetw(u16 *s, u16 v, unsigned int count)
+{
+	memset16(s, cpu_to_le16(v), count / 2);
+}
+
+#define scr_memcpyw(d, s, c) memcpy(d, s, c)
+#define scr_memmovew(d, s, c) memmove(d, s, c)
+#define VT_BUF_HAVE_MEMCPYW
+#define VT_BUF_HAVE_MEMMOVEW
+#define VT_BUF_HAVE_MEMSETW
+
+#endif /* _ASM_VGA_H */