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