1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * linux/arch/arm/mm/iomap.c 4 * 5 * Map IO port and PCI memory spaces so that {read,write}[bwl] can 6 * be used to access this memory. 7 */ 8 #include <linux/module.h> 9 #include <linux/pci.h> 10 #include <linux/ioport.h> 11 #include <linux/io.h> 12 13 #include <asm/vga.h> 14 15 unsigned long vga_base; 16 EXPORT_SYMBOL(vga_base); 17 18 #ifdef __io 19 void __iomem *ioport_map(unsigned long port, unsigned int nr) 20 { 21 return __io(port); 22 } 23 EXPORT_SYMBOL(ioport_map); 24 25 void ioport_unmap(void __iomem *addr) 26 { 27 } 28 EXPORT_SYMBOL(ioport_unmap); 29 #endif 30 31 #ifdef CONFIG_PCI 32 unsigned long pcibios_min_io = 0x1000; 33 EXPORT_SYMBOL(pcibios_min_io); 34 35 unsigned long pcibios_min_mem = 0x01000000; 36 EXPORT_SYMBOL(pcibios_min_mem); 37 38 void pci_iounmap(struct pci_dev *dev, void __iomem *addr) 39 { 40 if ((unsigned long)addr >= VMALLOC_START && 41 (unsigned long)addr < VMALLOC_END) 42 iounmap(addr); 43 } 44 EXPORT_SYMBOL(pci_iounmap); 45 #endif 46