forked from Minki/linux
25c1556663
Access to PHY and radio registers is indirect on Broadcom hardware and it seems that addressing on some MIPS SoCs may require flushing. So far this problem was noticed on 0x4716 SoC only (marketing names: BCM4717, BCM4718). Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
266 lines
7.1 KiB
C
266 lines
7.1 KiB
C
/*
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Broadcom B43 wireless driver
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Bus abstraction layer
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Copyright (c) 2011 Rafał Miłecki <zajec5@gmail.com>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; see the file COPYING. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
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Boston, MA 02110-1301, USA.
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*/
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#ifdef CONFIG_BCM47XX_BCMA
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#include <asm/mach-bcm47xx/bcm47xx.h>
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#endif
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#include "b43.h"
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#include "bus.h"
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/* BCMA */
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#ifdef CONFIG_B43_BCMA
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static int b43_bus_bcma_bus_may_powerdown(struct b43_bus_dev *dev)
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{
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return 0; /* bcma_bus_may_powerdown(dev->bdev->bus); */
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}
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static int b43_bus_bcma_bus_powerup(struct b43_bus_dev *dev,
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bool dynamic_pctl)
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{
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return 0; /* bcma_bus_powerup(dev->sdev->bus, dynamic_pctl); */
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}
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static int b43_bus_bcma_device_is_enabled(struct b43_bus_dev *dev)
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{
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return bcma_core_is_enabled(dev->bdev);
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}
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static void b43_bus_bcma_device_enable(struct b43_bus_dev *dev,
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u32 core_specific_flags)
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{
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bcma_core_enable(dev->bdev, core_specific_flags);
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}
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static void b43_bus_bcma_device_disable(struct b43_bus_dev *dev,
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u32 core_specific_flags)
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{
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bcma_core_disable(dev->bdev, core_specific_flags);
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}
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static u16 b43_bus_bcma_read16(struct b43_bus_dev *dev, u16 offset)
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{
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return bcma_read16(dev->bdev, offset);
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}
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static u32 b43_bus_bcma_read32(struct b43_bus_dev *dev, u16 offset)
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{
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return bcma_read32(dev->bdev, offset);
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}
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static
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void b43_bus_bcma_write16(struct b43_bus_dev *dev, u16 offset, u16 value)
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{
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bcma_write16(dev->bdev, offset, value);
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}
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static
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void b43_bus_bcma_write32(struct b43_bus_dev *dev, u16 offset, u32 value)
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{
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bcma_write32(dev->bdev, offset, value);
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}
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static
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void b43_bus_bcma_block_read(struct b43_bus_dev *dev, void *buffer,
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size_t count, u16 offset, u8 reg_width)
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{
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bcma_block_read(dev->bdev, buffer, count, offset, reg_width);
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}
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static
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void b43_bus_bcma_block_write(struct b43_bus_dev *dev, const void *buffer,
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size_t count, u16 offset, u8 reg_width)
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{
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bcma_block_write(dev->bdev, buffer, count, offset, reg_width);
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}
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struct b43_bus_dev *b43_bus_dev_bcma_init(struct bcma_device *core)
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{
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struct b43_bus_dev *dev = kzalloc(sizeof(*dev), GFP_KERNEL);
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if (!dev)
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return NULL;
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dev->bus_type = B43_BUS_BCMA;
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dev->bdev = core;
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dev->bus_may_powerdown = b43_bus_bcma_bus_may_powerdown;
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dev->bus_powerup = b43_bus_bcma_bus_powerup;
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dev->device_is_enabled = b43_bus_bcma_device_is_enabled;
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dev->device_enable = b43_bus_bcma_device_enable;
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dev->device_disable = b43_bus_bcma_device_disable;
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dev->read16 = b43_bus_bcma_read16;
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dev->read32 = b43_bus_bcma_read32;
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dev->write16 = b43_bus_bcma_write16;
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dev->write32 = b43_bus_bcma_write32;
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dev->block_read = b43_bus_bcma_block_read;
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dev->block_write = b43_bus_bcma_block_write;
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#ifdef CONFIG_BCM47XX_BCMA
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if (b43_bus_host_is_pci(dev) &&
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bcm47xx_bus_type == BCM47XX_BUS_TYPE_BCMA &&
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bcm47xx_bus.bcma.bus.chipinfo.id == BCMA_CHIP_ID_BCM4716)
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dev->flush_writes = true;
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#endif
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dev->dev = &core->dev;
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dev->dma_dev = core->dma_dev;
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dev->irq = core->irq;
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dev->board_vendor = core->bus->boardinfo.vendor;
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dev->board_type = core->bus->boardinfo.type;
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dev->board_rev = core->bus->sprom.board_rev;
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dev->chip_id = core->bus->chipinfo.id;
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dev->chip_rev = core->bus->chipinfo.rev;
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dev->chip_pkg = core->bus->chipinfo.pkg;
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dev->bus_sprom = &core->bus->sprom;
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dev->core_id = core->id.id;
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dev->core_rev = core->id.rev;
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return dev;
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}
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#endif /* CONFIG_B43_BCMA */
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/* SSB */
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#ifdef CONFIG_B43_SSB
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static int b43_bus_ssb_bus_may_powerdown(struct b43_bus_dev *dev)
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{
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return ssb_bus_may_powerdown(dev->sdev->bus);
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}
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static int b43_bus_ssb_bus_powerup(struct b43_bus_dev *dev,
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bool dynamic_pctl)
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{
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return ssb_bus_powerup(dev->sdev->bus, dynamic_pctl);
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}
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static int b43_bus_ssb_device_is_enabled(struct b43_bus_dev *dev)
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{
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return ssb_device_is_enabled(dev->sdev);
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}
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static void b43_bus_ssb_device_enable(struct b43_bus_dev *dev,
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u32 core_specific_flags)
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{
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ssb_device_enable(dev->sdev, core_specific_flags);
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}
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static void b43_bus_ssb_device_disable(struct b43_bus_dev *dev,
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u32 core_specific_flags)
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{
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ssb_device_disable(dev->sdev, core_specific_flags);
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}
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static u16 b43_bus_ssb_read16(struct b43_bus_dev *dev, u16 offset)
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{
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return ssb_read16(dev->sdev, offset);
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}
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static u32 b43_bus_ssb_read32(struct b43_bus_dev *dev, u16 offset)
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{
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return ssb_read32(dev->sdev, offset);
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}
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static void b43_bus_ssb_write16(struct b43_bus_dev *dev, u16 offset, u16 value)
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{
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ssb_write16(dev->sdev, offset, value);
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}
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static void b43_bus_ssb_write32(struct b43_bus_dev *dev, u16 offset, u32 value)
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{
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ssb_write32(dev->sdev, offset, value);
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}
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static void b43_bus_ssb_block_read(struct b43_bus_dev *dev, void *buffer,
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size_t count, u16 offset, u8 reg_width)
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{
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ssb_block_read(dev->sdev, buffer, count, offset, reg_width);
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}
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static
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void b43_bus_ssb_block_write(struct b43_bus_dev *dev, const void *buffer,
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size_t count, u16 offset, u8 reg_width)
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{
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ssb_block_write(dev->sdev, buffer, count, offset, reg_width);
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}
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struct b43_bus_dev *b43_bus_dev_ssb_init(struct ssb_device *sdev)
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{
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struct b43_bus_dev *dev;
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dev = kzalloc(sizeof(*dev), GFP_KERNEL);
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if (!dev)
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return NULL;
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dev->bus_type = B43_BUS_SSB;
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dev->sdev = sdev;
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dev->bus_may_powerdown = b43_bus_ssb_bus_may_powerdown;
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dev->bus_powerup = b43_bus_ssb_bus_powerup;
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dev->device_is_enabled = b43_bus_ssb_device_is_enabled;
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dev->device_enable = b43_bus_ssb_device_enable;
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dev->device_disable = b43_bus_ssb_device_disable;
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dev->read16 = b43_bus_ssb_read16;
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dev->read32 = b43_bus_ssb_read32;
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dev->write16 = b43_bus_ssb_write16;
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dev->write32 = b43_bus_ssb_write32;
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dev->block_read = b43_bus_ssb_block_read;
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dev->block_write = b43_bus_ssb_block_write;
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dev->dev = sdev->dev;
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dev->dma_dev = sdev->dma_dev;
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dev->irq = sdev->irq;
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dev->board_vendor = sdev->bus->boardinfo.vendor;
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dev->board_type = sdev->bus->boardinfo.type;
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dev->board_rev = sdev->bus->sprom.board_rev;
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dev->chip_id = sdev->bus->chip_id;
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dev->chip_rev = sdev->bus->chip_rev;
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dev->chip_pkg = sdev->bus->chip_package;
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dev->bus_sprom = &sdev->bus->sprom;
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dev->core_id = sdev->id.coreid;
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dev->core_rev = sdev->id.revision;
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return dev;
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}
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#endif /* CONFIG_B43_SSB */
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void *b43_bus_get_wldev(struct b43_bus_dev *dev)
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{
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switch (dev->bus_type) {
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#ifdef CONFIG_B43_BCMA
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case B43_BUS_BCMA:
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return bcma_get_drvdata(dev->bdev);
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#endif
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#ifdef CONFIG_B43_SSB
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case B43_BUS_SSB:
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return ssb_get_drvdata(dev->sdev);
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#endif
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}
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return NULL;
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}
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void b43_bus_set_wldev(struct b43_bus_dev *dev, void *wldev)
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{
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switch (dev->bus_type) {
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#ifdef CONFIG_B43_BCMA
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case B43_BUS_BCMA:
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bcma_set_drvdata(dev->bdev, wldev);
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break;
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#endif
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#ifdef CONFIG_B43_SSB
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case B43_BUS_SSB:
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ssb_set_drvdata(dev->sdev, wldev);
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break;
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#endif
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}
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}
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