projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| b481de9c ZY |
1 | /****************************************************************************** |
| 2 | * | |
| eb7ae89c | 3 | * Copyright(c) 2003 - 2008 Intel Corporation. All rights reserved. |
| b481de9c ZY |
4 | * |
| 5 | * Portions of this file are derived from the ipw3945 project, as well | |
| 6 | * as portions of the ieee80211 subsystem header files. | |
| 7 | * | |
| 8 | * This program is free software; you can redistribute it and/or modify it | |
| 9 | * under the terms of version 2 of the GNU General Public License as | |
| 10 | * published by the Free Software Foundation. | |
| 11 | * | |
| 12 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
| 13 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 14 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
| 15 | * more details. | |
| 16 | * | |
| 17 | * You should have received a copy of the GNU General Public License along with | |
| 18 | * this program; if not, write to the Free Software Foundation, Inc., | |
| 19 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA | |
| 20 | * | |
| 21 | * The full GNU General Public License is included in this distribution in the | |
| 22 | * file called LICENSE. | |
| 23 | * | |
| 24 | * Contact Information: | |
| 759ef89f | 25 | * Intel Linux Wireless <ilw@linux.intel.com> |
| b481de9c ZY |
26 | * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
| 27 | * | |
| 28 | *****************************************************************************/ | |
| 29 | ||
| 30 | #ifndef __iwl_helpers_h__ | |
| 31 | #define __iwl_helpers_h__ | |
| 32 | ||
| 33 | #include <linux/ctype.h> | |
| 34 | ||
| b481de9c ZY |
35 | #define KELVIN_TO_CELSIUS(x) ((x)-273) |
| 36 | #define CELSIUS_TO_KELVIN(x) ((x)+273) | |
| da1bc453 TW |
37 | #define IWL_MASK(lo, hi) ((1 << (hi)) | ((1 << (hi)) - (1 << (lo)))) |
| 38 | ||
| b481de9c | 39 | |
| b481de9c ZY |
40 | static inline struct ieee80211_conf *ieee80211_get_hw_conf( |
| 41 | struct ieee80211_hw *hw) | |
| 42 | { | |
| 43 | return &hw->conf; | |
| 44 | } | |
| 45 | ||
| b481de9c ZY |
46 | static inline int iwl_check_bits(unsigned long field, unsigned long mask) |
| 47 | { | |
| 48 | return ((field & mask) == mask) ? 1 : 0; | |
| 49 | } | |
| 50 | ||
| 51 | static inline unsigned long elapsed_jiffies(unsigned long start, | |
| 52 | unsigned long end) | |
| 53 | { | |
| 9e7d1a44 | 54 | if (end >= start) |
| b481de9c ZY |
55 | return end - start; |
| 56 | ||
| 9e7d1a44 | 57 | return end + (MAX_JIFFY_OFFSET - start) + 1; |
| b481de9c ZY |
58 | } |
| 59 | ||
| c54b679d TW |
60 | /** |
| 61 | * iwl_queue_inc_wrap - increment queue index, wrap back to beginning | |
| 62 | * @index -- current index | |
| 63 | * @n_bd -- total number of entries in queue (must be power of 2) | |
| 64 | */ | |
| 65 | static inline int iwl_queue_inc_wrap(int index, int n_bd) | |
| 66 | { | |
| 67 | return ++index & (n_bd - 1); | |
| 68 | } | |
| 69 | ||
| 70 | /** | |
| 71 | * iwl_queue_dec_wrap - decrement queue index, wrap back to end | |
| 72 | * @index -- current index | |
| 73 | * @n_bd -- total number of entries in queue (must be power of 2) | |
| 74 | */ | |
| 75 | static inline int iwl_queue_dec_wrap(int index, int n_bd) | |
| 76 | { | |
| 77 | return --index & (n_bd - 1); | |
| 78 | } | |
| 79 | ||
| 98c92211 TW |
80 | /* TODO: Move fw_desc functions to iwl-pci.ko */ |
| 81 | static inline void iwl_free_fw_desc(struct pci_dev *pci_dev, | |
| 82 | struct fw_desc *desc) | |
| 83 | { | |
| 84 | if (desc->v_addr) | |
| 85 | pci_free_consistent(pci_dev, desc->len, | |
| 86 | desc->v_addr, desc->p_addr); | |
| 87 | desc->v_addr = NULL; | |
| 88 | desc->len = 0; | |
| 89 | } | |
| 90 | ||
| 91 | static inline int iwl_alloc_fw_desc(struct pci_dev *pci_dev, | |
| 92 | struct fw_desc *desc) | |
| 93 | { | |
| 94 | desc->v_addr = pci_alloc_consistent(pci_dev, desc->len, &desc->p_addr); | |
| 95 | return (desc->v_addr != NULL) ? 0 : -ENOMEM; | |
| 96 | } | |
| 97 | ||
| b481de9c | 98 | #endif /* __iwl_helpers_h__ */ |