Chouhan, Anurag | 5776318 | 2016-03-03 18:57:27 +0530 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2014-2016 The Linux Foundation. All rights reserved. |
| 3 | * |
| 4 | * Previously licensed under the ISC license by Qualcomm Atheros, Inc. |
| 5 | * |
| 6 | * |
| 7 | * Permission to use, copy, modify, and/or distribute this software for |
| 8 | * any purpose with or without fee is hereby granted, provided that the |
| 9 | * above copyright notice and this permission notice appear in all |
| 10 | * copies. |
| 11 | * |
| 12 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL |
| 13 | * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED |
| 14 | * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE |
| 15 | * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL |
| 16 | * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR |
| 17 | * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER |
| 18 | * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR |
| 19 | * PERFORMANCE OF THIS SOFTWARE. |
| 20 | */ |
| 21 | |
| 22 | /* |
| 23 | * This file was originally distributed by Qualcomm Atheros, Inc. |
| 24 | * under proprietary terms before Copyright ownership was assigned |
| 25 | * to the Linux Foundation. |
| 26 | */ |
| 27 | |
| 28 | /** |
| 29 | * DOC: i_qdf_mem.h |
| 30 | * Linux-specific definitions for QDF memory API's |
| 31 | */ |
| 32 | |
| 33 | #ifndef __I_QDF_MEM_H |
| 34 | #define __I_QDF_MEM_H |
| 35 | |
| 36 | #ifdef __KERNEL__ |
| 37 | #if LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17) |
| 38 | #if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 33) |
| 39 | #include <linux/autoconf.h> |
| 40 | #else |
| 41 | #include <generated/autoconf.h> |
| 42 | #endif |
| 43 | #endif |
| 44 | #include <linux/slab.h> |
| 45 | #include <linux/hardirq.h> |
| 46 | #include <linux/vmalloc.h> |
| 47 | #include <linux/pci.h> /* pci_alloc_consistent */ |
| 48 | #if CONFIG_MCL |
| 49 | #include <cds_queue.h> |
| 50 | #else |
| 51 | #include <sys/queue.h> |
| 52 | #endif |
| 53 | #else |
| 54 | /* |
| 55 | * Provide dummy defs for kernel data types, functions, and enums |
| 56 | * used in this header file. |
| 57 | */ |
| 58 | #define GFP_KERNEL 0 |
| 59 | #define GFP_ATOMIC 0 |
| 60 | #define kzalloc(size, flags) NULL |
| 61 | #define vmalloc(size) NULL |
| 62 | #define kfree(buf) |
| 63 | #define vfree(buf) |
| 64 | #define pci_alloc_consistent(dev, size, paddr) NULL |
Anurag Chouhan | ced2345 | 2016-06-15 11:33:01 +0530 | [diff] [blame^] | 65 | #define __qdf_mempool_t void* |
Chouhan, Anurag | 5776318 | 2016-03-03 18:57:27 +0530 | [diff] [blame] | 66 | #endif /* __KERNEL__ */ |
| 67 | #include <qdf_status.h> |
| 68 | |
| 69 | #ifdef __KERNEL__ |
| 70 | typedef struct mempool_elem { |
| 71 | STAILQ_ENTRY(mempool_elem) mempool_entry; |
| 72 | } mempool_elem_t; |
| 73 | |
| 74 | /** |
| 75 | * typedef __qdf_mempool_ctxt_t - Memory pool context |
| 76 | * @pool_id: pool identifier |
| 77 | * @flags: flags |
| 78 | * @elem_size: size of each pool element in bytes |
| 79 | * @pool_mem: pool_addr address of the pool created |
| 80 | * @mem_size: Total size of the pool in bytes |
| 81 | * @free_list: free pool list |
| 82 | * @lock: spinlock object |
| 83 | * @max_elem: Maximum number of elements in tha pool |
| 84 | * @free_cnt: Number of free elements available |
| 85 | */ |
| 86 | typedef struct __qdf_mempool_ctxt { |
| 87 | int pool_id; |
| 88 | u_int32_t flags; |
| 89 | size_t elem_size; |
| 90 | void *pool_mem; |
| 91 | u_int32_t mem_size; |
| 92 | STAILQ_HEAD(, mempool_elem) free_list; |
| 93 | spinlock_t lock; |
| 94 | u_int32_t max_elem; |
| 95 | u_int32_t free_cnt; |
| 96 | } __qdf_mempool_ctxt_t; |
Anurag Chouhan | 85bc91a | 2016-03-21 19:18:37 +0530 | [diff] [blame] | 97 | |
| 98 | #endif /* __KERNEL__ */ |
Chouhan, Anurag | 5776318 | 2016-03-03 18:57:27 +0530 | [diff] [blame] | 99 | |
| 100 | /* typedef for dma_data_direction */ |
| 101 | typedef enum dma_data_direction __dma_data_direction; |
| 102 | |
| 103 | /** |
| 104 | * __qdf_str_cmp() - Compare two strings |
| 105 | * @str1: First string |
| 106 | * @str2: Second string |
| 107 | * |
| 108 | * Return: =0 equal |
| 109 | * >0 not equal, if str1 sorts lexicographically after str2 |
| 110 | * <0 not equal, if str1 sorts lexicographically before str2 |
| 111 | */ |
| 112 | static inline int32_t __qdf_str_cmp(const char *str1, const char *str2) |
| 113 | { |
| 114 | return strcmp(str1, str2); |
| 115 | } |
| 116 | |
| 117 | /** |
| 118 | * __qdf_str_lcopy() - Copy from one string to another |
| 119 | * @dest: destination string |
| 120 | * @src: source string |
| 121 | * @bytes: limit of num bytes to copy |
| 122 | * |
| 123 | * @return: 0 returns the initial value of dest |
| 124 | */ |
| 125 | static inline uint32_t __qdf_str_lcopy(char *dest, const char *src, |
| 126 | uint32_t bytes) |
| 127 | { |
| 128 | return strlcpy(dest, src, bytes); |
| 129 | } |
| 130 | |
| 131 | /** |
| 132 | * __qdf_mem_map_nbytes_single - Map memory for DMA |
| 133 | * @osdev: pomter OS device context |
| 134 | * @buf: pointer to memory to be dma mapped |
| 135 | * @dir: DMA map direction |
| 136 | * @nbytes: number of bytes to be mapped. |
| 137 | * @phy_addr: ponter to recive physical address. |
| 138 | * |
| 139 | * Return: success/failure |
| 140 | */ |
| 141 | static inline uint32_t __qdf_mem_map_nbytes_single(qdf_device_t osdev, |
| 142 | void *buf, qdf_dma_dir_t dir, |
| 143 | int nbytes, |
| 144 | uint32_t *phy_addr) |
| 145 | { |
| 146 | /* assume that the OS only provides a single fragment */ |
| 147 | *phy_addr = dma_map_single(osdev->dev, buf, nbytes, dir); |
| 148 | return dma_mapping_error(osdev->dev, *phy_addr) ? |
| 149 | QDF_STATUS_E_FAILURE : QDF_STATUS_SUCCESS; |
| 150 | } |
| 151 | |
| 152 | /** |
| 153 | * __qdf_mem_unmap_nbytes_single() - un_map memory for DMA |
| 154 | * |
| 155 | * @osdev: pomter OS device context |
| 156 | * @phy_addr: physical address of memory to be dma unmapped |
| 157 | * @dir: DMA unmap direction |
| 158 | * @nbytes: number of bytes to be unmapped. |
| 159 | * |
| 160 | * @return - none |
| 161 | */ |
| 162 | static inline void __qdf_mem_unmap_nbytes_single(qdf_device_t osdev, |
| 163 | uint32_t phy_addr, |
| 164 | qdf_dma_dir_t dir, int nbytes) |
| 165 | { |
| 166 | dma_unmap_single(osdev->dev, phy_addr, nbytes, dir); |
| 167 | } |
| 168 | #ifdef __KERNEL__ |
| 169 | |
| 170 | typedef __qdf_mempool_ctxt_t *__qdf_mempool_t; |
| 171 | |
| 172 | int __qdf_mempool_init(qdf_device_t osdev, __qdf_mempool_t *pool, int pool_cnt, |
| 173 | size_t pool_entry_size, u_int32_t flags); |
| 174 | void __qdf_mempool_destroy(qdf_device_t osdev, __qdf_mempool_t pool); |
| 175 | void *__qdf_mempool_alloc(qdf_device_t osdev, __qdf_mempool_t pool); |
| 176 | void __qdf_mempool_free(qdf_device_t osdev, __qdf_mempool_t pool, void *buf); |
| 177 | |
| 178 | #define __qdf_mempool_elem_size(_pool) ((_pool)->elem_size); |
| 179 | #endif |
| 180 | |
| 181 | /** |
| 182 | * __qdf_str_len() - returns the length of a string |
| 183 | * @str: input string |
| 184 | * Return: |
| 185 | * length of string |
| 186 | */ |
| 187 | static inline int32_t __qdf_str_len(const char *str) |
| 188 | { |
| 189 | return strlen(str); |
| 190 | } |
| 191 | |
| 192 | /** |
| 193 | * __qdf_mem_cmp() - memory compare |
| 194 | * @memory1: pointer to one location in memory to compare. |
| 195 | * @memory2: pointer to second location in memory to compare. |
| 196 | * @num_bytes: the number of bytes to compare. |
| 197 | * |
| 198 | * Function to compare two pieces of memory, similar to memcmp function |
| 199 | * in standard C. |
| 200 | * Return: |
| 201 | * int32_t - returns a bool value that tells if the memory |
| 202 | * locations are equal or not equal. |
| 203 | * 0 -- equal |
| 204 | * < 0 -- *memory1 is less than *memory2 |
| 205 | * > 0 -- *memory1 is bigger than *memory2 |
| 206 | */ |
| 207 | static inline int32_t __qdf_mem_cmp(const void *memory1, const void *memory2, |
| 208 | uint32_t num_bytes) |
| 209 | { |
| 210 | return (int32_t) memcmp(memory1, memory2, num_bytes); |
| 211 | } |
| 212 | |
| 213 | #endif /* __I_QDF_MEM_H */ |