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 /* Raw target IO, address is not translated */
  55 static inline void wl1271_raw_write(struct wl1271 *wl, int addr, void *buf,
  56                                     size_t len, bool fixed)
  57 {
  58         wl->if_ops->write(wl->dev, addr, buf, len, fixed);
  59 }
  60
  61 static inline void wl1271_raw_read(struct wl1271 *wl, int addr, void *buf,
  62                                    size_t len, bool fixed)
  63 {
  64         wl->if_ops->read(wl->dev, addr, buf, len, fixed);
  65 }
  66
  67 static inline u32 wl1271_raw_read32(struct wl1271 *wl, int addr)
  68 {
  69         wl1271_raw_read(wl, addr, &wl->buffer_32,
  70                             sizeof(wl->buffer_32), false);
  71
  72         return le32_to_cpu(wl->buffer_32);
  73 }
  74
  75 static inline void wl1271_raw_write32(struct wl1271 *wl, int addr, u32 val)
  76 {
  77         wl->buffer_32 = cpu_to_le32(val);
  78         wl1271_raw_write(wl, addr, &wl->buffer_32,
  79                              sizeof(wl->buffer_32), false);
  80 }
  81
  82 /* Translated target IO */
  83 static inline int wl1271_translate_addr(struct wl1271 *wl, int addr)
  84 {
  85         /*
  86          * To translate, first check to which window of addresses the
  87          * particular address belongs. Then subtract the starting address
  88          * of that window from the address. Then, add offset of the
  89          * translated region.
  90          *
  91          * The translated regions occur next to each other in physical device
  92          * memory, so just add the sizes of the preceding address regions to
  93          * get the offset to the new region.
  94          *
  95          * Currently, only the two first regions are addressed, and the
  96          * assumption is that all addresses will fall into either of those
  97          * two.
  98          */
  99         if ((addr >= wl->part.reg.start) &&
 100             (addr < wl->part.reg.start + wl->part.reg.size))
 101                 return addr - wl->part.reg.start + wl->part.mem.size;
 102         else
 103                 return addr - wl->part.mem.start;
 104 }
 105
 106 static inline void wl1271_read(struct wl1271 *wl, int addr, void *buf,
 107                                size_t len, bool fixed)
 108 {
 109         int physical;
 110
 111         physical = wl1271_translate_addr(wl, addr);
 112
 113         wl1271_raw_read(wl, physical, buf, len, fixed);
 114 }
 115
 116 static inline void wl1271_write(struct wl1271 *wl, int addr, void *buf,
 117                                 size_t len, bool fixed)
 118 {
 119         int physical;
 120
 121         physical = wl1271_translate_addr(wl, addr);
 122
 123         wl1271_raw_write(wl, physical, buf, len, fixed);
 124 }
 125
 126 static inline void wl1271_read_hwaddr(struct wl1271 *wl, int hwaddr,
 127                                       void *buf, size_t len, bool fixed)
 128 {
 129         int physical;
 130         int addr;
 131
 132         /* Addresses are stored internally as addresses to 32 bytes blocks */
 133         addr = hwaddr << 5;
 134
 135         physical = wl1271_translate_addr(wl, addr);
 136
 137         wl1271_raw_read(wl, physical, buf, len, fixed);
 138 }
 139
 140 static inline u32 wl1271_read32(struct wl1271 *wl, int addr)
 141 {
 142         return wl1271_raw_read32(wl, wl1271_translate_addr(wl, addr));
 143 }
 144
 145 static inline void wl1271_write32(struct wl1271 *wl, int addr, u32 val)
 146 {
 147         wl1271_raw_write32(wl, wl1271_translate_addr(wl, addr), val);
 148 }
 149
 150 static inline void wl1271_power_off(struct wl1271 *wl)
 151 {
 152         wl->if_ops->power(wl->dev, false);
 153         clear_bit(WL1271_FLAG_GPIO_POWER, &wl->flags);
 154 }
 155
 156 static inline int wl1271_power_on(struct wl1271 *wl)
 157 {
 158         int ret = wl->if_ops->power(wl->dev, true);
 159         if (ret == 0)
 160                 set_bit(WL1271_FLAG_GPIO_POWER, &wl->flags);
 161
 162         return ret;
 163 }
 164
 165
 166 /* Top Register IO */
 167 void wl1271_top_reg_write(struct wl1271 *wl, int addr, u16 val);
 168 u16 wl1271_top_reg_read(struct wl1271 *wl, int addr);
 169
 170 int wl1271_set_partition(struct wl1271 *wl,
 171                          struct wl1271_partition_set *p);
 172
 173 bool wl1271_set_block_size(struct wl1271 *wl);
 174
 175 /* Functions from wl1271_main.c */
 176
 177 int wl1271_tx_dummy_packet(struct wl1271 *wl);
 178
 179 #endif