/* SPDX-License-Identifier: GPL-2.0 */ /* * Access to VGA videoram * * (c) 1998 Martin Mares <mj@ucw.cz> */ #ifndef _LINUX_ASM_VGA_H_ #define _LINUX_ASM_VGA_H_ #include <asm/io.h> #define VT_BUF_HAVE_RW #define VT_BUF_HAVE_MEMSETW #define VT_BUF_HAVE_MEMCPYW static inline void scr_writew(u16 val, volatile u16 *addr) { if (__is_ioaddr(addr)) __raw_writew(val, (volatile u16 __iomem *) addr); else *addr = val; } static inline u16 scr_readw(volatile const u16 *addr) { if (__is_ioaddr(addr)) return __raw_readw((volatile const u16 __iomem *) addr); else return *addr; } static inline void scr_memsetw(u16 *s, u16 c, unsigned int count) { if (__is_ioaddr(s)) memsetw_io((u16 __iomem *) s, c, count); else memset16(s, c, count / 2); } /* Do not trust that the usage will be correct; analyze the arguments. */ extern void scr_memcpyw(u16 *d, const u16 *s, unsigned int count); /* ??? These are currently only used for downloading character sets. As such, they don't need memory barriers. Is this all they are intended to be used for? */ #define vga_readb(a) readb((u8 __iomem *)(a)) #define vga_writeb(v,a) writeb(v, (u8 __iomem *)(a)) #ifdef [31mCONFIG_VGA_HOSE[0m #include <linux/ioport.h> #include <linux/pci.h> extern struct pci_controller *pci_vga_hose; # define __is_port_vga(a) \ (((a) >= 0x3b0) && ((a) < 0x3e0) && \ ((a) != 0x3b3) && ((a) != 0x3d3)) # define __is_mem_vga(a) \ (((a) >= 0xa0000) && ((a) <= 0xc0000)) # define FIXUP_IOADDR_VGA(a) do { \ if (pci_vga_hose && __is_port_vga(a)) \ (a) += pci_vga_hose->io_space->start; \ } while(0) # define FIXUP_MEMADDR_VGA(a) do { \ if (pci_vga_hose && __is_mem_vga(a)) \ (a) += pci_vga_hose->mem_space->start; \ } while(0) #else /* CONFIG_VGA_HOSE */ # define pci_vga_hose 0 # define __is_port_vga(a) 0 # define __is_mem_vga(a) 0 # define FIXUP_IOADDR_VGA(a) # define FIXUP_MEMADDR_VGA(a) #endif /* CONFIG_VGA_HOSE */ #define VGA_MAP_MEM(x,s) ((unsigned long) ioremap(x, s)) #endif |