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 <linux/irqreturn.h>
  29 #include "reg.h"
  30
  31 #define HW_ACCESS_MEMORY_MAX_RANGE      0x1FFC0
  32
  33 #define HW_PARTITION_REGISTERS_ADDR     0x1FFC0
  34 #define HW_PART0_SIZE_ADDR              (HW_PARTITION_REGISTERS_ADDR)
  35 #define HW_PART0_START_ADDR             (HW_PARTITION_REGISTERS_ADDR + 4)
  36 #define HW_PART1_SIZE_ADDR              (HW_PARTITION_REGISTERS_ADDR + 8)
  37 #define HW_PART1_START_ADDR             (HW_PARTITION_REGISTERS_ADDR + 12)
  38 #define HW_PART2_SIZE_ADDR              (HW_PARTITION_REGISTERS_ADDR + 16)
  39 #define HW_PART2_START_ADDR             (HW_PARTITION_REGISTERS_ADDR + 20)
  40 #define HW_PART3_START_ADDR             (HW_PARTITION_REGISTERS_ADDR + 24)
  41
  42 #define HW_ACCESS_REGISTER_SIZE         4
  43
  44 #define HW_ACCESS_PRAM_MAX_RANGE        0x3c000
  45
  46 struct wl1271;
  47
  48 void wl1271_disable_interrupts(struct wl1271 *wl);
  49 void wl1271_enable_interrupts(struct wl1271 *wl);
  50
  51 void wl1271_io_reset(struct wl1271 *wl);
  52 void wl1271_io_init(struct wl1271 *wl);
  53
  54 static inline struct device *wl1271_wl_to_dev(struct wl1271 *wl)
  55 {
  56         return wl->if_ops->dev(wl);
  57 }
  58
  59
  60 /* Raw target IO, address is not translated */
  61 static inline void wl1271_raw_write(struct wl1271 *wl, int addr, void *buf,
  62                                     size_t len, bool fixed)
  63 {
  64         wl->if_ops->write(wl, addr, buf, len, fixed);
  65 }
  66
  67 static inline void wl1271_raw_read(struct wl1271 *wl, int addr, void *buf,
  68                                    size_t len, bool fixed)
  69 {
  70         wl->if_ops->read(wl, addr, buf, len, fixed);
  71 }
  72
  73 static inline u32 wl1271_raw_read32(struct wl1271 *wl, int addr)
  74 {
  75         wl1271_raw_read(wl, addr, &wl->buffer_32,
  76                             sizeof(wl->buffer_32), false);
  77
  78         return le32_to_cpu(wl->buffer_32);
  79 }
  80
  81 static inline void wl1271_raw_write32(struct wl1271 *wl, int addr, u32 val)
  82 {
  83         wl->buffer_32 = cpu_to_le32(val);
  84         wl1271_raw_write(wl, addr, &wl->buffer_32,
  85                              sizeof(wl->buffer_32), false);
  86 }
  87
  88 /* Translated target IO */
  89 static inline int wl1271_translate_addr(struct wl1271 *wl, int addr)
  90 {
  91         /*
  92          * To translate, first check to which window of addresses the
  93          * particular address belongs. Then subtract the starting address
  94          * of that window from the address. Then, add offset of the
  95          * translated region.
  96          *
  97          * The translated regions occur next to each other in physical device
  98          * memory, so just add the sizes of the preceding address regions to
  99          * get the offset to the new region.
 100          *
 101          * Currently, only the two first regions are addressed, and the
 102          * assumption is that all addresses will fall into either of those
 103          * two.
 104          */
 105         if ((addr >= wl->part.reg.start) &&
 106             (addr < wl->part.reg.start + wl->part.reg.size))
 107                 return addr - wl->part.reg.start + wl->part.mem.size;
 108         else
 109                 return addr - wl->part.mem.start;
 110 }
 111
 112 static inline void wl1271_read(struct wl1271 *wl, int addr, void *buf,
 113                                size_t len, bool fixed)
 114 {
 115         int physical;
 116
 117         physical = wl1271_translate_addr(wl, addr);
 118
 119         wl1271_raw_read(wl, physical, buf, len, fixed);
 120 }
 121
 122 static inline void wl1271_write(struct wl1271 *wl, int addr, void *buf,
 123                                 size_t len, bool fixed)
 124 {
 125         int physical;
 126
 127         physical = wl1271_translate_addr(wl, addr);
 128
 129         wl1271_raw_write(wl, physical, buf, len, fixed);
 130 }
 131
 132 static inline void wl1271_read_hwaddr(struct wl1271 *wl, int hwaddr,
 133                                       void *buf, size_t len, bool fixed)
 134 {
 135         int physical;
 136         int addr;
 137
 138         /* Addresses are stored internally as addresses to 32 bytes blocks */
 139         addr = hwaddr << 5;
 140
 141         physical = wl1271_translate_addr(wl, addr);
 142
 143         wl1271_raw_read(wl, physical, buf, len, fixed);
 144 }
 145
 146 static inline u32 wl1271_read32(struct wl1271 *wl, int addr)
 147 {
 148         return wl1271_raw_read32(wl, wl1271_translate_addr(wl, addr));
 149 }
 150
 151 static inline void wl1271_write32(struct wl1271 *wl, int addr, u32 val)
 152 {
 153         wl1271_raw_write32(wl, wl1271_translate_addr(wl, addr), val);
 154 }
 155
 156 static inline void wl1271_power_off(struct wl1271 *wl)
 157 {
 158         wl->if_ops->power(wl, false);
 159         clear_bit(WL1271_FLAG_GPIO_POWER, &wl->flags);
 160 }
 161
 162 static inline int wl1271_power_on(struct wl1271 *wl)
 163 {
 164         int ret = wl->if_ops->power(wl, true);
 165         if (ret == 0)
 166                 set_bit(WL1271_FLAG_GPIO_POWER, &wl->flags);
 167
 168         return ret;
 169 }
 170
 171
 172 /* Top Register IO */
 173 void wl1271_top_reg_write(struct wl1271 *wl, int addr, u16 val);
 174 u16 wl1271_top_reg_read(struct wl1271 *wl, int addr);
 175
 176 int wl1271_set_partition(struct wl1271 *wl,
 177                          struct wl1271_partition_set *p);
 178
 179 /* Functions from wl1271_main.c */
 180
 181 int wl1271_register_hw(struct wl1271 *wl);
 182 void wl1271_unregister_hw(struct wl1271 *wl);
 183 int wl1271_init_ieee80211(struct wl1271 *wl);
 184 struct ieee80211_hw *wl1271_alloc_hw(void);
 185 int wl1271_free_hw(struct wl1271 *wl);
 186 irqreturn_t wl1271_irq(int irq, void *data);
 187 bool wl1271_set_block_size(struct wl1271 *wl);
 188 int wl1271_tx_dummy_packet(struct wl1271 *wl);
 189
 190 #endif