projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| c27a0d75 BS |
1 | /* |
| 2 | * Copyright 2006 PathScale, Inc. All Rights Reserved. | |
| 3 | * | |
| 4 | * This file is free software; you can redistribute it and/or modify | |
| 5 | * it under the terms of version 2 of the GNU General Public License | |
| 6 | * as published by the Free Software Foundation. | |
| 7 | * | |
| 8 | * This program is distributed in the hope that it will be useful, | |
| 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 11 | * GNU General Public License for more details. | |
| 12 | * | |
| 13 | * You should have received a copy of the GNU General Public License | |
| 14 | * along with this program; if not, write to the Free Software Foundation, | |
| 15 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. | |
| 16 | */ | |
| 17 | ||
| 18 | #ifndef _LINUX_IO_H | |
| 19 | #define _LINUX_IO_H | |
| 20 | ||
| cb1055fb | 21 | #include <linux/types.h> |
| c27a0d75 | 22 | #include <asm/io.h> |
| 74588d8b | 23 | #include <asm/page.h> |
| c27a0d75 | 24 | |
| 7f253770 AM |
25 | struct device; |
| 26 | ||
| c27a0d75 | 27 | void __iowrite32_copy(void __iomem *to, const void *from, size_t count); |
| 22ae813b | 28 | void __iowrite64_copy(void __iomem *to, const void *from, size_t count); |
| c27a0d75 | 29 | |
| 74588d8b HS |
30 | int ioremap_page_range(unsigned long addr, unsigned long end, |
| 31 | unsigned long phys_addr, pgprot_t prot); | |
| 32 | ||
| 9ac7849e TH |
33 | /* |
| 34 | * Managed iomap interface | |
| 35 | */ | |
| 93da2879 | 36 | #ifdef CONFIG_HAS_IOPORT |
| 9ac7849e TH |
37 | void __iomem * devm_ioport_map(struct device *dev, unsigned long port, |
| 38 | unsigned int nr); | |
| 39 | void devm_ioport_unmap(struct device *dev, void __iomem *addr); | |
| 93da2879 RK |
40 | #else |
| 41 | static inline void __iomem *devm_ioport_map(struct device *dev, | |
| 42 | unsigned long port, | |
| 43 | unsigned int nr) | |
| 44 | { | |
| 45 | return NULL; | |
| 46 | } | |
| 47 | ||
| 48 | static inline void devm_ioport_unmap(struct device *dev, void __iomem *addr) | |
| 49 | { | |
| 50 | } | |
| 51 | #endif | |
| 9ac7849e TH |
52 | |
| 53 | void __iomem * devm_ioremap(struct device *dev, unsigned long offset, | |
| 54 | unsigned long size); | |
| 55 | void __iomem * devm_ioremap_nocache(struct device *dev, unsigned long offset, | |
| 56 | unsigned long size); | |
| 57 | void devm_iounmap(struct device *dev, void __iomem *addr); | |
| 58 | ||
| e50190a8 MW |
59 | /** |
| 60 | * check_signature - find BIOS signatures | |
| 61 | * @io_addr: mmio address to check | |
| 62 | * @signature: signature block | |
| 63 | * @length: length of signature | |
| 64 | * | |
| 65 | * Perform a signature comparison with the mmio address io_addr. This | |
| 66 | * address should have been obtained by ioremap. | |
| 67 | * Returns 1 on a match. | |
| 68 | */ | |
| 69 | ||
| 70 | static inline int check_signature(const volatile void __iomem *io_addr, | |
| 71 | const unsigned char *signature, int length) | |
| 72 | { | |
| 73 | int retval = 0; | |
| 74 | do { | |
| 75 | if (readb(io_addr) != *signature) | |
| 76 | goto out; | |
| 77 | io_addr++; | |
| 78 | signature++; | |
| 79 | length--; | |
| 80 | } while (length); | |
| 81 | retval = 1; | |
| 82 | out: | |
| 83 | return retval; | |
| 84 | } | |
| 85 | ||
| c27a0d75 | 86 | #endif /* _LINUX_IO_H */ |