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 unsigned long vga_base; 14 EXPORT_SYMBOL(vga_base); 15 16 #ifdef __io 17 void __iomem *ioport_map(unsigned long port, unsigned int nr) 18 { 19 return __io(port); 20 } 21 EXPORT_SYMBOL(ioport_map); 22 23 void ioport_unmap(void __iomem *addr) 24 { 25 } 26 EXPORT_SYMBOL(ioport_unmap); 27 #endif 28 29 #ifdef CONFIG_PCI 30 unsigned long pcibios_min_io = 0x1000; 31 EXPORT_SYMBOL(pcibios_min_io); 32 33 unsigned long pcibios_min_mem = 0x01000000; 34 EXPORT_SYMBOL(pcibios_min_mem); 35 36 void pci_iounmap(struct pci_dev *dev, void __iomem *addr) 37 { 38 if ((unsigned long)addr >= VMALLOC_START && 39 (unsigned long)addr < VMALLOC_END) 40 iounmap(addr); 41 } 42 EXPORT_SYMBOL(pci_iounmap); 43 #endif 44