projects / mirror_ubuntu-artful-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 35189fad RB |
1 | /* |
| 2 | * Copyright (C) 2004, 2005 by Basler Vision Technologies AG | |
| 3 | * Author: Thomas Koeller <thomas.koeller@baslerweb.com> | |
| 4 | * | |
| 5 | * Procfs support for Basler eXcite | |
| 6 | * | |
| 7 | * This program is free software; you can redistribute it and/or modify | |
| 8 | * it under the terms of the GNU General Public License as published by | |
| 9 | * the Free Software Foundation; either version 2 of the License, or | |
| 10 | * (at your option) any later version. | |
| 11 | * | |
| 12 | * This program is distributed in the hope that it will be useful, | |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 15 | * GNU General Public License for more details. | |
| 16 | * | |
| 17 | * You should have received a copy of the GNU General Public License | |
| 18 | * along with this program; if not, write to the Free Software | |
| 19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| 20 | */ | |
| 21 | ||
| 35189fad RB |
22 | #include <linux/proc_fs.h> |
| 23 | #include <linux/stat.h> | |
| 24 | #include <asm/page.h> | |
| 25 | #include <asm/io.h> | |
| 26 | #include <asm/system.h> | |
| 27 | #include <asm/rm9k-ocd.h> | |
| 28 | ||
| 29 | #include <excite.h> | |
| 30 | ||
| 31 | static int excite_get_unit_id(char *buf, char **addr, off_t offs, int size) | |
| 32 | { | |
| 33 | const int len = snprintf(buf, PAGE_SIZE, "%06x", unit_id); | |
| 34 | const int w = len - offs; | |
| 35 | *addr = buf + offs; | |
| 36 | return w < size ? w : size; | |
| 37 | } | |
| 38 | ||
| 39 | static int | |
| 40 | excite_bootrom_read(char *page, char **start, off_t off, int count, | |
| 41 | int *eof, void *data) | |
| 42 | { | |
| 43 | void __iomem * src; | |
| 44 | ||
| 45 | if (off >= EXCITE_SIZE_BOOTROM) { | |
| 46 | *eof = 1; | |
| 47 | return 0; | |
| 48 | } | |
| 49 | ||
| 50 | if ((off + count) > EXCITE_SIZE_BOOTROM) | |
| 51 | count = EXCITE_SIZE_BOOTROM - off; | |
| 52 | ||
| 53 | src = ioremap(EXCITE_PHYS_BOOTROM + off, count); | |
| 54 | if (src) { | |
| 55 | memcpy_fromio(page, src, count); | |
| 56 | iounmap(src); | |
| 57 | *start = page; | |
| 58 | } else { | |
| 59 | count = -ENOMEM; | |
| 60 | } | |
| 61 | ||
| 62 | return count; | |
| 63 | } | |
| 64 | ||
| 65 | void excite_procfs_init(void) | |
| 66 | { | |
| 67 | /* Create & populate /proc/excite */ | |
| c74c120a | 68 | struct proc_dir_entry * const pdir = proc_mkdir("excite", NULL); |
| 35189fad RB |
69 | if (pdir) { |
| 70 | struct proc_dir_entry * e; | |
| 71 | ||
| 72 | e = create_proc_info_entry("unit_id", S_IRUGO, pdir, | |
| 73 | excite_get_unit_id); | |
| 74 | if (e) e->size = 6; | |
| 75 | ||
| 76 | e = create_proc_read_entry("bootrom", S_IRUGO, pdir, | |
| 77 | excite_bootrom_read, NULL); | |
| 78 | if (e) e->size = EXCITE_SIZE_BOOTROM; | |
| 79 | } | |
| 80 | } |