1/*
 2 *	Access to VGA videoram
 3 *
 4 *	(c) 1998 Martin Mares <mj@ucw.cz>
 5 */
 6
 7#ifndef _LINUX_ASM_VGA_H_
 8#define _LINUX_ASM_VGA_H_
 9
10#include <asm/io.h>
11
12#define VT_BUF_HAVE_RW
13#define VT_BUF_HAVE_MEMSETW
14#define VT_BUF_HAVE_MEMCPYW
15
16static inline void scr_writew(u16 val, volatile u16 *addr)
17{
18	if (__is_ioaddr(addr))
19		__raw_writew(val, (volatile u16 __iomem *) addr);
20	else
21		*addr = val;
22}
23
24static inline u16 scr_readw(volatile const u16 *addr)
25{
26	if (__is_ioaddr(addr))
27		return __raw_readw((volatile const u16 __iomem *) addr);
28	else
29		return *addr;
30}
31
32static inline void scr_memsetw(u16 *s, u16 c, unsigned int count)
33{
34	if (__is_ioaddr(s))
35		memsetw_io((u16 __iomem *) s, c, count);
36	else
37		memsetw(s, c, count);
38}
39
40/* Do not trust that the usage will be correct; analyze the arguments.  */
41extern void scr_memcpyw(u16 *d, const u16 *s, unsigned int count);
42
43/* ??? These are currently only used for downloading character sets.  As
44   such, they don't need memory barriers.  Is this all they are intended
45   to be used for?  */
46#define vga_readb(a)	readb((u8 __iomem *)(a))
47#define vga_writeb(v,a)	writeb(v, (u8 __iomem *)(a))
48
49#ifdef CONFIG_VGA_HOSE
50#include <linux/ioport.h>
51#include <linux/pci.h>
52
53extern struct pci_controller *pci_vga_hose;
54
55# define __is_port_vga(a)       \
56	(((a) >= 0x3b0) && ((a) < 0x3e0) && \
57	 ((a) != 0x3b3) && ((a) != 0x3d3))
58
59# define __is_mem_vga(a) \
60	(((a) >= 0xa0000) && ((a) <= 0xc0000))
61
62# define FIXUP_IOADDR_VGA(a) do {                       \
63	if (pci_vga_hose && __is_port_vga(a))     \
64		(a) += pci_vga_hose->io_space->start;	  \
65 } while(0)
66
67# define FIXUP_MEMADDR_VGA(a) do {                       \
68	if (pci_vga_hose && __is_mem_vga(a))     \
69		(a) += pci_vga_hose->mem_space->start; \
70 } while(0)
71
72#else /* CONFIG_VGA_HOSE */
73# define pci_vga_hose 0
74# define __is_port_vga(a) 0
75# define __is_mem_vga(a) 0
76# define FIXUP_IOADDR_VGA(a)
77# define FIXUP_MEMADDR_VGA(a)
78#endif /* CONFIG_VGA_HOSE */
79
80#define VGA_MAP_MEM(x,s)	((unsigned long) ioremap(x, s))
81
82#endif

 1/* SPDX-License-Identifier: GPL-2.0 */
 2/*
 3 *	Access to VGA videoram
 4 *
 5 *	(c) 1998 Martin Mares <mj@ucw.cz>
 6 */
 7
 8#ifndef _LINUX_ASM_VGA_H_
 9#define _LINUX_ASM_VGA_H_
10
11#include <asm/io.h>
12
13#define VT_BUF_HAVE_RW
14#define VT_BUF_HAVE_MEMSETW
15#define VT_BUF_HAVE_MEMCPYW
16
17static inline void scr_writew(u16 val, volatile u16 *addr)
18{
19	if (__is_ioaddr(addr))
20		__raw_writew(val, (volatile u16 __iomem *) addr);
21	else
22		*addr = val;
23}
24
25static inline u16 scr_readw(volatile const u16 *addr)
26{
27	if (__is_ioaddr(addr))
28		return __raw_readw((volatile const u16 __iomem *) addr);
29	else
30		return *addr;
31}
32
33static inline void scr_memsetw(u16 *s, u16 c, unsigned int count)
34{
35	if (__is_ioaddr(s))
36		memsetw_io((u16 __iomem *) s, c, count);
37	else
38		memset16(s, c, count / 2);
39}
40
41/* Do not trust that the usage will be correct; analyze the arguments.  */
42extern void scr_memcpyw(u16 *d, const u16 *s, unsigned int count);
43
44/* ??? These are currently only used for downloading character sets.  As
45   such, they don't need memory barriers.  Is this all they are intended
46   to be used for?  */
47#define vga_readb(a)	readb((u8 __iomem *)(a))
48#define vga_writeb(v,a)	writeb(v, (u8 __iomem *)(a))
49
50#ifdef CONFIG_VGA_HOSE
51#include <linux/ioport.h>
52#include <linux/pci.h>
53
54extern struct pci_controller *pci_vga_hose;
55
56# define __is_port_vga(a)       \
57	(((a) >= 0x3b0) && ((a) < 0x3e0) && \
58	 ((a) != 0x3b3) && ((a) != 0x3d3))
59
60# define __is_mem_vga(a) \
61	(((a) >= 0xa0000) && ((a) <= 0xc0000))
62
63# define FIXUP_IOADDR_VGA(a) do {                       \
64	if (pci_vga_hose && __is_port_vga(a))     \
65		(a) += pci_vga_hose->io_space->start;	  \
66 } while(0)
67
68# define FIXUP_MEMADDR_VGA(a) do {                       \
69	if (pci_vga_hose && __is_mem_vga(a))     \
70		(a) += pci_vga_hose->mem_space->start; \
71 } while(0)
72
73#else /* CONFIG_VGA_HOSE */
74# define pci_vga_hose 0
75# define __is_port_vga(a) 0
76# define __is_mem_vga(a) 0
77# define FIXUP_IOADDR_VGA(a)
78# define FIXUP_MEMADDR_VGA(a)
79#endif /* CONFIG_VGA_HOSE */
80
81#define VGA_MAP_MEM(x,s)	((unsigned long) ioremap(x, s))
82
83#endif