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

Source file repositories/reference/linux-study-clean/drivers/net/wireless/broadcom/b43/bus.c

File Facts

System
Linux kernel
Corpus path
drivers/net/wireless/broadcom/b43/bus.c
Extension
.c
Size
6585 bytes
Lines
253
Domain
Driver Families
Bucket
drivers/net
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

// SPDX-License-Identifier: GPL-2.0-or-later
/*

  Broadcom B43 wireless driver
  Bus abstraction layer

  Copyright (c) 2011 Rafał Miłecki <zajec5@gmail.com>


*/

#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_obj(*dev);
	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;

Annotation

Implementation Notes