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[PATCH] vgacon: make VGA_MAP_MEM take size, remove extra use 

VGA_MAP_MEM translates to ioremap() on some architectures.  It makes sense
to do this to vga_vram_base, because we're going to access memory between
vga_vram_base and vga_vram_end.

But it doesn't really make sense to map starting at vga_vram_end, because
we aren't going to access memory starting there.  On ia64, which always has
to be different, ioremapping vga_vram_end gives you something completely
incompatible with ioremapped vga_vram_start, so vga_vram_size ends up being
nonsense.

As a bonus, we often know the size up front, so we can use ioremap()
correctly, rather than giving it a zero size.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Cc: "Luck, Tony" <tony.luck@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Bjorn Helgaas 2006-06-22 14:47:32 -07:00 committed by Linus Torvalds
parent d702ccb342
commit 4f1bcaf094
13 changed files with 22 additions and 23 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/video/console/mdacon.c
View File

@ -313,8 +313,8 @@ static const char __init *mdacon_startup(void)
mda_num_columns = 80;
mda_num_lines = 25;
mda_vram_base = VGA_MAP_MEM(0xb0000);
mda_vram_len = 0x01000;
mda_vram_base = VGA_MAP_MEM(0xb0000, mda_vram_len);
mda_index_port = 0x3b4;
mda_value_port = 0x3b5;

19
drivers/video/console/vgacon.c
View File

@ -391,7 +391,7 @@ static const char __init *vgacon_startup(void)
static struct resource ega_console_resource =
{ "ega", 0x3B0, 0x3BF };
vga_video_type = VIDEO_TYPE_EGAM;
vga_vram_end = 0xb8000;
vga_vram_size = 0x8000;
display_desc = "EGA+";
request_resource(&ioport_resource,
&ega_console_resource);
@ -401,7 +401,7 @@ static const char __init *vgacon_startup(void)
static struct resource mda2_console_resource =
{ "mda", 0x3BF, 0x3BF };
vga_video_type = VIDEO_TYPE_MDA;
vga_vram_end = 0xb2000;
vga_vram_size = 0x2000;
display_desc = "*MDA";
request_resource(&ioport_resource,
&mda1_console_resource);
@ -418,7 +418,7 @@ static const char __init *vgacon_startup(void)
if ((ORIG_VIDEO_EGA_BX & 0xff) != 0x10) {
int i;
vga_vram_end = 0xc0000;
vga_vram_size = 0x8000;
if (!ORIG_VIDEO_ISVGA) {
static struct resource ega_console_resource
@ -443,7 +443,7 @@ static const char __init *vgacon_startup(void)
* and COE=1 isn't necessarily a good idea)
*/
vga_vram_base = 0xa0000;
vga_vram_end = 0xb0000;
vga_vram_size = 0x10000;
outb_p(6, VGA_GFX_I);
outb_p(6, VGA_GFX_D);
#endif
@ -475,7 +475,7 @@ static const char __init *vgacon_startup(void)
static struct resource cga_console_resource =
{ "cga", 0x3D4, 0x3D5 };
vga_video_type = VIDEO_TYPE_CGA;
vga_vram_end = 0xba000;
vga_vram_size = 0x2000;
display_desc = "*CGA";
request_resource(&ioport_resource,
&cga_console_resource);
@ -483,9 +483,8 @@ static const char __init *vgacon_startup(void)
}
}
vga_vram_base = VGA_MAP_MEM(vga_vram_base);
vga_vram_end = VGA_MAP_MEM(vga_vram_end);
vga_vram_size = vga_vram_end - vga_vram_base;
vga_vram_base = VGA_MAP_MEM(vga_vram_base, vga_vram_size);
vga_vram_end = vga_vram_base + vga_vram_size;
/*
* Find out if there is a graphics card present.
@ -1020,14 +1019,14 @@ static int vgacon_do_font_op(struct vgastate *state,char *arg,int set,int ch512)
char *charmap;
if (vga_video_type != VIDEO_TYPE_EGAM) {
charmap = (char *) VGA_MAP_MEM(colourmap);
charmap = (char *) VGA_MAP_MEM(colourmap, 0);
beg = 0x0e;
#ifdef VGA_CAN_DO_64KB
if (vga_video_type == VIDEO_TYPE_VGAC)
beg = 0x06;
#endif
} else {
charmap = (char *) VGA_MAP_MEM(blackwmap);
charmap = (char *) VGA_MAP_MEM(blackwmap, 0);
beg = 0x0a;
}

2
drivers/video/vga16fb.c
View File

@ -1351,7 +1351,7 @@ static int __init vga16fb_probe(struct device *device)
}
/* XXX share VGA_FB_PHYS and I/O region with vgacon and others */
info->screen_base = (void __iomem *)VGA_MAP_MEM(VGA_FB_PHYS);
info->screen_base = (void __iomem *)VGA_MAP_MEM(VGA_FB_PHYS, 0);
if (!info->screen_base) {
printk(KERN_ERR "vga16fb: unable to map device\n");

2
include/asm-alpha/vga.h
View File

@ -46,6 +46,6 @@ extern void scr_memcpyw(u16 *d, const u16 *s, unsigned int count);
#define vga_readb(a) readb((u8 __iomem *)(a))
#define vga_writeb(v,a) writeb(v, (u8 __iomem *)(a))
#define VGA_MAP_MEM(x) ((unsigned long) ioremap(x, 0))
#define VGA_MAP_MEM(x,s) ((unsigned long) ioremap(x, s))
#endif

2
include/asm-arm/vga.h
View File

@ -4,7 +4,7 @@
#include <asm/hardware.h>
#include <asm/io.h>
#define VGA_MAP_MEM(x) (PCIMEM_BASE + (x))
#define VGA_MAP_MEM(x,s) (PCIMEM_BASE + (x))
#define vga_readb(x) (*((volatile unsigned char *)x))
#define vga_writeb(x,y) (*((volatile unsigned char *)y) = (x))

2
include/asm-i386/vga.h
View File

@ -12,7 +12,7 @@
* access the videoram directly without any black magic.
*/
#define VGA_MAP_MEM(x) (unsigned long)phys_to_virt(x)
#define VGA_MAP_MEM(x,s) (unsigned long)phys_to_virt(x)
#define vga_readb(x) (*(x))
#define vga_writeb(x,y) (*(y) = (x))

2
include/asm-ia64/vga.h
View File

@ -17,7 +17,7 @@
extern unsigned long vga_console_iobase;
extern unsigned long vga_console_membase;
#define VGA_MAP_MEM(x) ((unsigned long) ioremap_nocache(vga_console_membase + (x), 0))
#define VGA_MAP_MEM(x,s) ((unsigned long) ioremap_nocache(vga_console_membase + (x), s))
#define vga_readb(x) (*(x))
#define vga_writeb(x,y) (*(y) = (x))

2
include/asm-m32r/vga.h
View File

@ -14,7 +14,7 @@
* access the videoram directly without any black magic.
*/
#define VGA_MAP_MEM(x) (unsigned long)phys_to_virt(x)
#define VGA_MAP_MEM(x,s) (unsigned long)phys_to_virt(x)
#define vga_readb(x) (*(x))
#define vga_writeb(x,y) (*(y) = (x))

2
include/asm-mips/vga.h
View File

@ -13,7 +13,7 @@
* access the videoram directly without any black magic.
*/
#define VGA_MAP_MEM(x) (0xb0000000L + (unsigned long)(x))
#define VGA_MAP_MEM(x,s) (0xb0000000L + (unsigned long)(x))
#define vga_readb(x) (*(x))
#define vga_writeb(x,y) (*(y) = (x))

4
include/asm-powerpc/vga.h
View File

@ -41,9 +41,9 @@ static inline u16 scr_readw(volatile const u16 *addr)
extern unsigned long vgacon_remap_base;
#ifdef __powerpc64__
#define VGA_MAP_MEM(x) ((unsigned long) ioremap((x), 0))
#define VGA_MAP_MEM(x,s) ((unsigned long) ioremap((x), s))
#else
#define VGA_MAP_MEM(x) (x + vgacon_remap_base)
#define VGA_MAP_MEM(x,s) (x + vgacon_remap_base)
#endif
#define vga_readb(x) (*(x))

2
include/asm-sparc64/vga.h
View File

@ -28,6 +28,6 @@ static inline u16 scr_readw(const u16 *addr)
return *addr;
}
#define VGA_MAP_MEM(x) (x)
#define VGA_MAP_MEM(x,s) (x)
#endif

2
include/asm-x86_64/vga.h
View File

@ -12,7 +12,7 @@
* access the videoram directly without any black magic.
*/
#define VGA_MAP_MEM(x) (unsigned long)phys_to_virt(x)
#define VGA_MAP_MEM(x,s) (unsigned long)phys_to_virt(x)
#define vga_readb(x) (*(x))
#define vga_writeb(x,y) (*(y) = (x))

2
include/asm-xtensa/vga.h
View File

@ -11,7 +11,7 @@
#ifndef _XTENSA_VGA_H
#define _XTENSA_VGA_H
#define VGA_MAP_MEM(x) (unsigned long)phys_to_virt(x)
#define VGA_MAP_MEM(x,s) (unsigned long)phys_to_virt(x)
#define vga_readb(x) (*(x))
#define vga_writeb(x,y) (*(y) = (x))