drivers/net/wireless/wl12xx/io.h

   1 /*
   2  * This file is part of wl1271
   3  *
   4  * Copyright (C) 1998-2009 Texas Instruments. All rights reserved.
   5  * Copyright (C) 2008-2010 Nokia Corporation
   6  *
   7  * Contact: Luciano Coelho <luciano.coelho@nokia.com>
   8  *
   9  * This program is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU General Public License
  11  * version 2 as published by the Free Software Foundation.
  12  *
  13  * This program is distributed in the hope that it will be useful, but
  14  * WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  21  * 02110-1301 USA
  22  *
  23  */
  24
  25 #ifndef __IO_H__
  26 #define __IO_H__
  27
  28 #include "reg.h"
  29
  30 #define HW_ACCESS_MEMORY_MAX_RANGE      0x1FFC0
  31
  32 #define HW_PARTITION_REGISTERS_ADDR     0x1FFC0
  33 #define HW_PART0_SIZE_ADDR              (HW_PARTITION_REGISTERS_ADDR)
  34 #define HW_PART0_START_ADDR             (HW_PARTITION_REGISTERS_ADDR + 4)
  35 #define HW_PART1_SIZE_ADDR              (HW_PARTITION_REGISTERS_ADDR + 8)
  36 #define HW_PART1_START_ADDR             (HW_PARTITION_REGISTERS_ADDR + 12)
  37 #define HW_PART2_SIZE_ADDR              (HW_PARTITION_REGISTERS_ADDR + 16)
  38 #define HW_PART2_START_ADDR             (HW_PARTITION_REGISTERS_ADDR + 20)
  39 #define HW_PART3_START_ADDR             (HW_PARTITION_REGISTERS_ADDR + 24)
  40
  41 #define HW_ACCESS_REGISTER_SIZE         4
  42
  43 #define HW_ACCESS_PRAM_MAX_RANGE        0x3c000
  44
  45 struct wl1271;
  46
  47 void wl1271_disable_interrupts(struct wl1271 *wl);
  48 void wl1271_enable_interrupts(struct wl1271 *wl);
  49
  50 void wl1271_io_reset(struct wl1271 *wl);
  51 void wl1271_io_init(struct wl1271 *wl);
  52
  53 static inline struct device *wl1271_wl_to_dev(struct wl1271 *wl)
  54 {
  55         return wl->if_ops->dev(wl);
  56 }
  57
  58
  59 /* Raw target IO, address is not translated */
  60 static inline void wl1271_raw_write(struct wl1271 *wl, int addr, void *buf,
  61                                     size_t len, bool fixed)
  62 {
  63         wl->if_ops->write(wl, addr, buf, len, fixed);
  64 }
  65
  66 static inline void wl1271_raw_read(struct wl1271 *wl, int addr, void *buf,
  67                                    size_t len, bool fixed)
  68 {
  69         wl->if_ops->read(wl, addr, buf, len, fixed);
  70 }
  71
  72 static inline u32 wl1271_raw_read32(struct wl1271 *wl, int addr)
  73 {
  74         wl1271_raw_read(wl, addr, &wl->buffer_32,
  75                             sizeof(wl->buffer_32), false);
  76
  77         return le32_to_cpu(wl->buffer_32);
  78 }
  79
  80 static inline void wl1271_raw_write32(struct wl1271 *wl, int addr, u32 val)
  81 {
  82         wl->buffer_32 = cpu_to_le32(val);
  83         wl1271_raw_write(wl, addr, &wl->buffer_32,
  84                              sizeof(wl->buffer_32), false);
  85 }
  86
  87 /* Translated target IO */
  88 static inline int wl1271_translate_addr(struct wl1271 *wl, int addr)
  89 {
  90         /*
  91          * To translate, first check to which window of addresses the
  92          * particular address belongs. Then subtract the starting address
  93          * of that window from the address. Then, add offset of the
  94          * translated region.
  95          *
  96          * The translated regions occur next to each other in physical device
  97          * memory, so just add the sizes of the preceeding address regions to
  98          * get the offset to the new region.
  99          *
 100          * Currently, only the two first regions are addressed, and the
 101          * assumption is that all addresses will fall into either of those
 102          * two.
 103          */
 104         if ((addr >= wl->part.reg.start) &&
 105             (addr < wl->part.reg.start + wl->part.reg.size))
 106                 return addr - wl->part.reg.start + wl->part.mem.size;
 107         else
 108                 return addr - wl->part.mem.start;
 109 }
 110
 111 static inline void wl1271_read(struct wl1271 *wl, int addr, void *buf,
 112                                size_t len, bool fixed)
 113 {
 114         int physical;
 115
 116         physical = wl1271_translate_addr(wl, addr);
 117
 118         wl1271_raw_read(wl, physical, buf, len, fixed);
 119 }
 120
 121 static inline void wl1271_write(struct wl1271 *wl, int addr, void *buf,
 122                                 size_t len, bool fixed)
 123 {
 124         int physical;
 125
 126         physical = wl1271_translate_addr(wl, addr);
 127
 128         wl1271_raw_write(wl, physical, buf, len, fixed);
 129 }
 130
 131 static inline u32 wl1271_read32(struct wl1271 *wl, int addr)
 132 {
 133         return wl1271_raw_read32(wl, wl1271_translate_addr(wl, addr));
 134 }
 135
 136 static inline void wl1271_write32(struct wl1271 *wl, int addr, u32 val)
 137 {
 138         wl1271_raw_write32(wl, wl1271_translate_addr(wl, addr), val);
 139 }
 140
 141 static inline void wl1271_power_off(struct wl1271 *wl)
 142 {
 143         wl->if_ops->power(wl, false);
 144         clear_bit(WL1271_FLAG_GPIO_POWER, &wl->flags);
 145 }
 146
 147 static inline int wl1271_power_on(struct wl1271 *wl)
 148 {
 149         int ret = wl->if_ops->power(wl, true);
 150         if (ret == 0)
 151                 set_bit(WL1271_FLAG_GPIO_POWER, &wl->flags);
 152
 153         return ret;
 154 }
 155
 156
 157 /* Top Register IO */
 158 void wl1271_top_reg_write(struct wl1271 *wl, int addr, u16 val);
 159 u16 wl1271_top_reg_read(struct wl1271 *wl, int addr);
 160
 161 int wl1271_set_partition(struct wl1271 *wl,
 162                          struct wl1271_partition_set *p);
 163
 164 /* Functions from wl1271_main.c */
 165
 166 int wl1271_register_hw(struct wl1271 *wl);
 167 void wl1271_unregister_hw(struct wl1271 *wl);
 168 int wl1271_init_ieee80211(struct wl1271 *wl);
 169 struct ieee80211_hw *wl1271_alloc_hw(void);
 170 int wl1271_free_hw(struct wl1271 *wl);
 171
 172 #endif