drivers/net/wireless/broadcom/b43/bus.c

   1 /*
   2
   3   Broadcom B43 wireless driver
   4   Bus abstraction layer
   5
   6   Copyright (c) 2011 Rafał Miłecki <zajec5@gmail.com>
   7
   8   This program is free software; you can redistribute it and/or modify
   9   it under the terms of the GNU General Public License as published by
  10   the Free Software Foundation; either version 2 of the License, or
  11   (at your option) any later version.
  12
  13   This program is distributed in the hope that it will be useful,
  14   but WITHOUT ANY WARRANTY; without even the implied warranty of
  15   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16   GNU 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; see the file COPYING.  If not, write to
  20   the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
  21   Boston, MA 02110-1301, USA.
  22
  23 */
  24
  25 #ifdef CONFIG_BCM47XX_BCMA
  26 #include <asm/mach-bcm47xx/bcm47xx.h>
  27 #endif
  28
  29 #include "b43.h"
  30 #include "bus.h"
  31
  32 /* BCMA */
  33 #ifdef CONFIG_B43_BCMA
  34 static int b43_bus_bcma_bus_may_powerdown(struct b43_bus_dev *dev)
  35 {
  36         return 0; /* bcma_bus_may_powerdown(dev->bdev->bus); */
  37 }
  38 static int b43_bus_bcma_bus_powerup(struct b43_bus_dev *dev,
  39                                           bool dynamic_pctl)
  40 {
  41         return 0; /* bcma_bus_powerup(dev->sdev->bus, dynamic_pctl); */
  42 }
  43 static int b43_bus_bcma_device_is_enabled(struct b43_bus_dev *dev)
  44 {
  45         return bcma_core_is_enabled(dev->bdev);
  46 }
  47 static void b43_bus_bcma_device_enable(struct b43_bus_dev *dev,
  48                                              u32 core_specific_flags)
  49 {
  50         bcma_core_enable(dev->bdev, core_specific_flags);
  51 }
  52 static void b43_bus_bcma_device_disable(struct b43_bus_dev *dev,
  53                                               u32 core_specific_flags)
  54 {
  55         bcma_core_disable(dev->bdev, core_specific_flags);
  56 }
  57 static u16 b43_bus_bcma_read16(struct b43_bus_dev *dev, u16 offset)
  58 {
  59         return bcma_read16(dev->bdev, offset);
  60 }
  61 static u32 b43_bus_bcma_read32(struct b43_bus_dev *dev, u16 offset)
  62 {
  63         return bcma_read32(dev->bdev, offset);
  64 }
  65 static
  66 void b43_bus_bcma_write16(struct b43_bus_dev *dev, u16 offset, u16 value)
  67 {
  68         bcma_write16(dev->bdev, offset, value);
  69 }
  70 static
  71 void b43_bus_bcma_write32(struct b43_bus_dev *dev, u16 offset, u32 value)
  72 {
  73         bcma_write32(dev->bdev, offset, value);
  74 }
  75 static
  76 void b43_bus_bcma_block_read(struct b43_bus_dev *dev, void *buffer,
  77                              size_t count, u16 offset, u8 reg_width)
  78 {
  79         bcma_block_read(dev->bdev, buffer, count, offset, reg_width);
  80 }
  81 static
  82 void b43_bus_bcma_block_write(struct b43_bus_dev *dev, const void *buffer,
  83                               size_t count, u16 offset, u8 reg_width)
  84 {
  85         bcma_block_write(dev->bdev, buffer, count, offset, reg_width);
  86 }
  87
  88 struct b43_bus_dev *b43_bus_dev_bcma_init(struct bcma_device *core)
  89 {
  90         struct b43_bus_dev *dev = kzalloc(sizeof(*dev), GFP_KERNEL);
  91         if (!dev)
  92                 return NULL;
  93
  94         dev->bus_type = B43_BUS_BCMA;
  95         dev->bdev = core;
  96
  97         dev->bus_may_powerdown = b43_bus_bcma_bus_may_powerdown;
  98         dev->bus_powerup = b43_bus_bcma_bus_powerup;
  99         dev->device_is_enabled = b43_bus_bcma_device_is_enabled;
 100         dev->device_enable = b43_bus_bcma_device_enable;
 101         dev->device_disable = b43_bus_bcma_device_disable;
 102
 103         dev->read16 = b43_bus_bcma_read16;
 104         dev->read32 = b43_bus_bcma_read32;
 105         dev->write16 = b43_bus_bcma_write16;
 106         dev->write32 = b43_bus_bcma_write32;
 107         dev->block_read = b43_bus_bcma_block_read;
 108         dev->block_write = b43_bus_bcma_block_write;
 109 #ifdef CONFIG_BCM47XX_BCMA
 110         if (b43_bus_host_is_pci(dev) &&
 111             bcm47xx_bus_type == BCM47XX_BUS_TYPE_BCMA &&
 112             bcm47xx_bus.bcma.bus.chipinfo.id == BCMA_CHIP_ID_BCM4716)
 113                 dev->flush_writes = true;
 114 #endif
 115
 116         dev->dev = &core->dev;
 117         dev->dma_dev = core->dma_dev;
 118         dev->irq = core->irq;
 119
 120         dev->board_vendor = core->bus->boardinfo.vendor;
 121         dev->board_type = core->bus->boardinfo.type;
 122         dev->board_rev = core->bus->sprom.board_rev;
 123
 124         dev->chip_id = core->bus->chipinfo.id;
 125         dev->chip_rev = core->bus->chipinfo.rev;
 126         dev->chip_pkg = core->bus->chipinfo.pkg;
 127
 128         dev->bus_sprom = &core->bus->sprom;
 129
 130         dev->core_id = core->id.id;
 131         dev->core_rev = core->id.rev;
 132
 133         return dev;
 134 }
 135 #endif /* CONFIG_B43_BCMA */
 136
 137 /* SSB */
 138 #ifdef CONFIG_B43_SSB
 139 static int b43_bus_ssb_bus_may_powerdown(struct b43_bus_dev *dev)
 140 {
 141         return ssb_bus_may_powerdown(dev->sdev->bus);
 142 }
 143 static int b43_bus_ssb_bus_powerup(struct b43_bus_dev *dev,
 144                                           bool dynamic_pctl)
 145 {
 146         return ssb_bus_powerup(dev->sdev->bus, dynamic_pctl);
 147 }
 148 static int b43_bus_ssb_device_is_enabled(struct b43_bus_dev *dev)
 149 {
 150         return ssb_device_is_enabled(dev->sdev);
 151 }
 152 static void b43_bus_ssb_device_enable(struct b43_bus_dev *dev,
 153                                              u32 core_specific_flags)
 154 {
 155         ssb_device_enable(dev->sdev, core_specific_flags);
 156 }
 157 static void b43_bus_ssb_device_disable(struct b43_bus_dev *dev,
 158                                               u32 core_specific_flags)
 159 {
 160         ssb_device_disable(dev->sdev, core_specific_flags);
 161 }
 162
 163 static u16 b43_bus_ssb_read16(struct b43_bus_dev *dev, u16 offset)
 164 {
 165         return ssb_read16(dev->sdev, offset);
 166 }
 167 static u32 b43_bus_ssb_read32(struct b43_bus_dev *dev, u16 offset)
 168 {
 169         return ssb_read32(dev->sdev, offset);
 170 }
 171 static void b43_bus_ssb_write16(struct b43_bus_dev *dev, u16 offset, u16 value)
 172 {
 173         ssb_write16(dev->sdev, offset, value);
 174 }
 175 static void b43_bus_ssb_write32(struct b43_bus_dev *dev, u16 offset, u32 value)
 176 {
 177         ssb_write32(dev->sdev, offset, value);
 178 }
 179 static void b43_bus_ssb_block_read(struct b43_bus_dev *dev, void *buffer,
 180                                    size_t count, u16 offset, u8 reg_width)
 181 {
 182         ssb_block_read(dev->sdev, buffer, count, offset, reg_width);
 183 }
 184 static
 185 void b43_bus_ssb_block_write(struct b43_bus_dev *dev, const void *buffer,
 186                              size_t count, u16 offset, u8 reg_width)
 187 {
 188         ssb_block_write(dev->sdev, buffer, count, offset, reg_width);
 189 }
 190
 191 struct b43_bus_dev *b43_bus_dev_ssb_init(struct ssb_device *sdev)
 192 {
 193         struct b43_bus_dev *dev;
 194
 195         dev = kzalloc(sizeof(*dev), GFP_KERNEL);
 196         if (!dev)
 197                 return NULL;
 198
 199         dev->bus_type = B43_BUS_SSB;
 200         dev->sdev = sdev;
 201
 202         dev->bus_may_powerdown = b43_bus_ssb_bus_may_powerdown;
 203         dev->bus_powerup = b43_bus_ssb_bus_powerup;
 204         dev->device_is_enabled = b43_bus_ssb_device_is_enabled;
 205         dev->device_enable = b43_bus_ssb_device_enable;
 206         dev->device_disable = b43_bus_ssb_device_disable;
 207
 208         dev->read16 = b43_bus_ssb_read16;
 209         dev->read32 = b43_bus_ssb_read32;
 210         dev->write16 = b43_bus_ssb_write16;
 211         dev->write32 = b43_bus_ssb_write32;
 212         dev->block_read = b43_bus_ssb_block_read;
 213         dev->block_write = b43_bus_ssb_block_write;
 214
 215         dev->dev = sdev->dev;
 216         dev->dma_dev = sdev->dma_dev;
 217         dev->irq = sdev->irq;
 218
 219         dev->board_vendor = sdev->bus->boardinfo.vendor;
 220         dev->board_type = sdev->bus->boardinfo.type;
 221         dev->board_rev = sdev->bus->sprom.board_rev;
 222
 223         dev->chip_id = sdev->bus->chip_id;
 224         dev->chip_rev = sdev->bus->chip_rev;
 225         dev->chip_pkg = sdev->bus->chip_package;
 226
 227         dev->bus_sprom = &sdev->bus->sprom;
 228
 229         dev->core_id = sdev->id.coreid;
 230         dev->core_rev = sdev->id.revision;
 231
 232         return dev;
 233 }
 234 #endif /* CONFIG_B43_SSB */
 235
 236 void *b43_bus_get_wldev(struct b43_bus_dev *dev)
 237 {
 238         switch (dev->bus_type) {
 239 #ifdef CONFIG_B43_BCMA
 240         case B43_BUS_BCMA:
 241                 return bcma_get_drvdata(dev->bdev);
 242 #endif
 243 #ifdef CONFIG_B43_SSB
 244         case B43_BUS_SSB:
 245                 return ssb_get_drvdata(dev->sdev);
 246 #endif
 247         }
 248         return NULL;
 249 }
 250
 251 void b43_bus_set_wldev(struct b43_bus_dev *dev, void *wldev)
 252 {
 253         switch (dev->bus_type) {
 254 #ifdef CONFIG_B43_BCMA
 255         case B43_BUS_BCMA:
 256                 bcma_set_drvdata(dev->bdev, wldev);
 257                 break;
 258 #endif
 259 #ifdef CONFIG_B43_SSB
 260         case B43_BUS_SSB:
 261                 ssb_set_drvdata(dev->sdev, wldev);
 262                 break;
 263 #endif
 264         }
 265 }