1/*
 2 *  linux/arch/arm/mm/iomap.c
 3 *
 4 * Map IO port and PCI memory spaces so that {read,write}[bwl] can
 5 * be used to access this memory.
 6 */
 7#include <linux/module.h>
 8#include <linux/pci.h>
 9#include <linux/ioport.h>
10#include <linux/io.h>
11
 
 
12unsigned long vga_base;
13EXPORT_SYMBOL(vga_base);
14
15#ifdef __io
16void __iomem *ioport_map(unsigned long port, unsigned int nr)
17{
18	return __io(port);
19}
20EXPORT_SYMBOL(ioport_map);
21
22void ioport_unmap(void __iomem *addr)
23{
24}
25EXPORT_SYMBOL(ioport_unmap);
26#endif
27
28#ifdef CONFIG_PCI
29unsigned long pcibios_min_io = 0x1000;
30EXPORT_SYMBOL(pcibios_min_io);
31
32unsigned long pcibios_min_mem = 0x01000000;
33EXPORT_SYMBOL(pcibios_min_mem);
34
35unsigned int pci_flags = PCI_REASSIGN_ALL_RSRC;
36EXPORT_SYMBOL(pci_flags);
37
38void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long maxlen)
39{
40	resource_size_t start = pci_resource_start(dev, bar);
41	resource_size_t len   = pci_resource_len(dev, bar);
42	unsigned long flags = pci_resource_flags(dev, bar);
43
44	if (!len || !start)
45		return NULL;
46	if (maxlen && len > maxlen)
47		len = maxlen;
48	if (flags & IORESOURCE_IO)
49		return ioport_map(start, len);
50	if (flags & IORESOURCE_MEM) {
51		if (flags & IORESOURCE_CACHEABLE)
52			return ioremap(start, len);
53		return ioremap_nocache(start, len);
54	}
55	return NULL;
56}
57EXPORT_SYMBOL(pci_iomap);
58
59void pci_iounmap(struct pci_dev *dev, void __iomem *addr)
60{
61	if ((unsigned long)addr >= VMALLOC_START &&
62	    (unsigned long)addr < VMALLOC_END)
63		iounmap(addr);
64}
65EXPORT_SYMBOL(pci_iounmap);
66#endif

 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
15unsigned long vga_base;
16EXPORT_SYMBOL(vga_base);
17
18#ifdef __io
19void __iomem *ioport_map(unsigned long port, unsigned int nr)
20{
21	return __io(port);
22}
23EXPORT_SYMBOL(ioport_map);
24
25void ioport_unmap(void __iomem *addr)
26{
27}
28EXPORT_SYMBOL(ioport_unmap);
29#endif
30
31#ifdef CONFIG_PCI
32unsigned long pcibios_min_io = 0x1000;
33EXPORT_SYMBOL(pcibios_min_io);
34
35unsigned long pcibios_min_mem = 0x01000000;
36EXPORT_SYMBOL(pcibios_min_mem);
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
37
38void 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}
44EXPORT_SYMBOL(pci_iounmap);
45#endif