xref: /openbmc/linux/arch/microblaze/include/asm/io.h (revision b34e08d5)
1 /*
2  * Copyright (C) 2007-2009 Michal Simek <monstr@monstr.eu>
3  * Copyright (C) 2007-2009 PetaLogix
4  * Copyright (C) 2006 Atmark Techno, Inc.
5  *
6  * This file is subject to the terms and conditions of the GNU General Public
7  * License. See the file "COPYING" in the main directory of this archive
8  * for more details.
9  */
10 
11 #ifndef _ASM_MICROBLAZE_IO_H
12 #define _ASM_MICROBLAZE_IO_H
13 
14 #include <asm/byteorder.h>
15 #include <asm/page.h>
16 #include <linux/types.h>
17 #include <linux/mm.h>          /* Get struct page {...} */
18 
19 #ifndef CONFIG_PCI
20 #define _IO_BASE	0
21 #define _ISA_MEM_BASE	0
22 #define PCI_DRAM_OFFSET	0
23 #else
24 #define _IO_BASE	isa_io_base
25 #define _ISA_MEM_BASE	isa_mem_base
26 #define PCI_DRAM_OFFSET	pci_dram_offset
27 struct pci_dev;
28 extern void pci_iounmap(struct pci_dev *dev, void __iomem *);
29 #define pci_iounmap pci_iounmap
30 
31 extern unsigned long isa_io_base;
32 extern unsigned long pci_dram_offset;
33 extern resource_size_t isa_mem_base;
34 #endif
35 
36 #define PCI_IOBASE	((void __iomem *)_IO_BASE)
37 #define IO_SPACE_LIMIT (0xFFFFFFFF)
38 
39 #ifdef CONFIG_MMU
40 #define page_to_bus(page)	(page_to_phys(page))
41 
42 extern void iounmap(void __iomem *addr);
43 
44 extern void __iomem *ioremap(phys_addr_t address, unsigned long size);
45 #define ioremap_writethrough(addr, size)	ioremap((addr), (size))
46 #define ioremap_nocache(addr, size)		ioremap((addr), (size))
47 #define ioremap_fullcache(addr, size)		ioremap((addr), (size))
48 #define ioremap_wc(addr, size)			ioremap((addr), (size))
49 
50 #endif /* CONFIG_MMU */
51 
52 /* Big Endian */
53 #define out_be32(a, v) __raw_writel((v), (void __iomem __force *)(a))
54 #define out_be16(a, v) __raw_writew((v), (a))
55 
56 #define in_be32(a) __raw_readl((const void __iomem __force *)(a))
57 #define in_be16(a) __raw_readw(a)
58 
59 #define writel_be(v, a)	out_be32((__force unsigned *)a, v)
60 #define readl_be(a)	in_be32((__force unsigned *)a)
61 
62 /* Little endian */
63 #define out_le32(a, v) __raw_writel(__cpu_to_le32(v), (a))
64 #define out_le16(a, v) __raw_writew(__cpu_to_le16(v), (a))
65 
66 #define in_le32(a) __le32_to_cpu(__raw_readl(a))
67 #define in_le16(a) __le16_to_cpu(__raw_readw(a))
68 
69 /* Byte ops */
70 #define out_8(a, v) __raw_writeb((v), (a))
71 #define in_8(a) __raw_readb(a)
72 
73 #include <asm-generic/io.h>
74 
75 #define readb_relaxed	readb
76 #define readw_relaxed	readw
77 #define readl_relaxed	readl
78 
79 #define writeb_relaxed	writeb
80 #define writew_relaxed	writew
81 #define writel_relaxed	writel
82 
83 #endif /* _ASM_MICROBLAZE_IO_H */
84