4.104.114.95
Last change
on this file since 5a2b5b2 was
5a2b5b2,
checked in by Chris Johns <chrisj@…>, on 05/01/08 at 04:15:36
|
2008-05-01 Chris Johns <chrisj@…>
- libblock/include/rtems/nvdisk-sram.h,
libblock/include/rtems/nvdisk.h,
libblock/src/nvdisk-sram.c,
libblock/src/nvdisk.c: New. A Non-volatile memory disk drive.
- Makefile.am, preinstall.am, libblock/Makefile.am: Updated for
the NV disk driver.
|
-
Property mode set to
100644
|
File size:
1.5 KB
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Rev | Line | |
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[5a2b5b2] | 1 | /* |
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| 2 | * $Id$ |
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| 3 | * |
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| 4 | * RTEMS Project (http://www.rtems.org/) |
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| 5 | * |
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| 6 | * Copyright 2007 Chris Johns (chrisj@rtems.org) |
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| 7 | */ |
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| 8 | /** |
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| 9 | * Provide SRAM support for the NV Disk. |
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| 10 | */ |
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| 11 | |
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| 12 | #include <stdio.h> |
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| 13 | #include <errno.h> |
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| 14 | |
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| 15 | #include <rtems.h> |
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| 16 | |
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| 17 | #include <rtems/nvdisk-sram.h> |
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| 18 | |
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| 19 | #ifndef NVDISK_SRAM_ERROR_TRACE |
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| 20 | #define NVDISK_SRAM_ERROR_TRACE (0) |
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| 21 | #endif |
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| 22 | |
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| 23 | static int |
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| 24 | rtems_nvdisk_sram_read (uint32_t device, |
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| 25 | uint32_t flags, |
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| 26 | uint32_t base, |
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| 27 | uint32_t offset, |
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| 28 | void* buffer, |
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| 29 | uint32_t size) |
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| 30 | { |
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| 31 | memcpy (buffer, (char*) (base + offset), size); |
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| 32 | return 0; |
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| 33 | } |
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| 34 | |
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| 35 | static int |
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| 36 | rtems_nvdisk_sram_write (uint32_t device, |
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| 37 | uint32_t flags, |
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| 38 | uint32_t base, |
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| 39 | uint32_t offset, |
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| 40 | const void* buffer, |
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| 41 | uint32_t size) |
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| 42 | { |
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| 43 | memcpy ((char*) (base + offset), buffer, size); |
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| 44 | return 0; |
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| 45 | } |
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| 46 | |
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| 47 | static int |
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| 48 | rtems_nvdisk_sram_verify (uint32_t device, |
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| 49 | uint32_t flags, |
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| 50 | uint32_t base, |
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| 51 | uint32_t offset, |
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| 52 | const void* buffer, |
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| 53 | uint32_t size) |
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| 54 | { |
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| 55 | return memcmp ((char*) (base + offset), buffer, size) == 0 ? 0 : EIO; |
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| 56 | } |
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| 57 | |
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| 58 | |
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| 59 | const rtems_nvdisk_driver_handlers rtems_nvdisk_sram_handlers = |
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| 60 | { |
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| 61 | read: rtems_nvdisk_sram_read, |
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| 62 | write: rtems_nvdisk_sram_write, |
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| 63 | verify: rtems_nvdisk_sram_verify |
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| 64 | }; |
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