drivers/net/wireless/ti/wlcore/io.c - linux - Git at Google

 /*
  * This file is part of wl1271
  *
  * Copyright (C) 2008-2010 Nokia Corporation
  *
  * Contact: Luciano Coelho <luciano.coelho@nokia.com>
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
  * version 2 as published by the Free Software Foundation.
  *
  * 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; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  * 02110-1301 USA
  *
  */

 #include <linux/module.h>
 #include <linux/platform_device.h>
 #include <linux/spi/spi.h>
 #include <linux/interrupt.h>

 #include "wlcore.h"
 #include "debug.h"
 #include "wl12xx_80211.h"
 #include "io.h"
 #include "tx.h"

 bool wl1271_set_block_size(struct wl1271 *wl)
 {
 	if (wl->if_ops->set_block_size) {
 		wl->if_ops->set_block_size(wl->dev, WL12XX_BUS_BLOCK_SIZE);
 		return true;
 	}

 	return false;
 }

 void wlcore_disable_interrupts(struct wl1271 *wl)
 {
 	disable_irq(wl->irq);
 }
 EXPORT_SYMBOL_GPL(wlcore_disable_interrupts);

 void wlcore_disable_interrupts_nosync(struct wl1271 *wl)
 {
 	disable_irq_nosync(wl->irq);
 }
 EXPORT_SYMBOL_GPL(wlcore_disable_interrupts_nosync);

 void wlcore_enable_interrupts(struct wl1271 *wl)
 {
 	enable_irq(wl->irq);
 }
 EXPORT_SYMBOL_GPL(wlcore_enable_interrupts);

 void wlcore_synchronize_interrupts(struct wl1271 *wl)
 {
 	synchronize_irq(wl->irq);
 }
 EXPORT_SYMBOL_GPL(wlcore_synchronize_interrupts);

 int wlcore_translate_addr(struct wl1271 *wl, int addr)
 {
 	struct wlcore_partition_set *part = &wl->curr_part;

 	/*
 	 * To translate, first check to which window of addresses the
 	 * particular address belongs. Then subtract the starting address
 	 * of that window from the address. Then, add offset of the
 	 * translated region.
 	 *
 	 * The translated regions occur next to each other in physical device
 	 * memory, so just add the sizes of the preceding address regions to
 	 * get the offset to the new region.
 	 */
 	if ((addr >= part->mem.start) &&
 	    (addr < part->mem.start + part->mem.size))
 		return addr - part->mem.start;
 	else if ((addr >= part->reg.start) &&
 		 (addr < part->reg.start + part->reg.size))
 		return addr - part->reg.start + part->mem.size;
 	else if ((addr >= part->mem2.start) &&
 		 (addr < part->mem2.start + part->mem2.size))
 		return addr - part->mem2.start + part->mem.size +
 			part->reg.size;
 	else if ((addr >= part->mem3.start) &&
 		 (addr < part->mem3.start + part->mem3.size))
 		return addr - part->mem3.start + part->mem.size +
 			part->reg.size + part->mem2.size;

 	WARN(1, "HW address 0x%x out of range", addr);
 	return 0;
 }
 EXPORT_SYMBOL_GPL(wlcore_translate_addr);

 /* Set the partitions to access the chip addresses
  *
  * To simplify driver code, a fixed (virtual) memory map is defined for
  * register and memory addresses. Because in the chipset, in different stages
  * of operation, those addresses will move around, an address translation
  * mechanism is required.
  *
  * There are four partitions (three memory and one register partition),
  * which are mapped to two different areas of the hardware memory.
  *
  *                                Virtual address
  *                                     space
  *
  *                                    |    |
  *                                 ...+----+--> mem.start
  *          Physical address    ...   |    |
  *               space       ...      |    | [PART_0]
  *                        ...         |    |
  *  00000000  <--+----+...         ...+----+--> mem.start + mem.size
  *               |    |         ...   |    |
  *               |MEM |      ...      |    |
  *               |    |   ...         |    |
  *  mem.size  <--+----+...            |    | {unused area)
  *               |    |   ...         |    |
  *               |REG |      ...      |    |
  *  mem.size     |    |         ...   |    |
  *      +     <--+----+...         ...+----+--> reg.start
  *  reg.size     |    |   ...         |    |
  *               |MEM2|      ...      |    | [PART_1]
  *               |    |         ...   |    |
  *                                 ...+----+--> reg.start + reg.size
  *                                    |    |
  *
  */
 int wlcore_set_partition(struct wl1271 *wl,
 			 const struct wlcore_partition_set *p)
 {
 	int ret;

 	/* copy partition info */
 	memcpy(&wl->curr_part, p, sizeof(*p));

 	wl1271_debug(DEBUG_IO, "mem_start %08X mem_size %08X",
 		     p->mem.start, p->mem.size);
 	wl1271_debug(DEBUG_IO, "reg_start %08X reg_size %08X",
 		     p->reg.start, p->reg.size);
 	wl1271_debug(DEBUG_IO, "mem2_start %08X mem2_size %08X",
 		     p->mem2.start, p->mem2.size);
 	wl1271_debug(DEBUG_IO, "mem3_start %08X mem3_size %08X",
 		     p->mem3.start, p->mem3.size);

 	ret = wlcore_raw_write32(wl, HW_PART0_START_ADDR, p->mem.start);
 	if (ret < 0)
 		goto out;

 	ret = wlcore_raw_write32(wl, HW_PART0_SIZE_ADDR, p->mem.size);
 	if (ret < 0)
 		goto out;

 	ret = wlcore_raw_write32(wl, HW_PART1_START_ADDR, p->reg.start);
 	if (ret < 0)
 		goto out;

 	ret = wlcore_raw_write32(wl, HW_PART1_SIZE_ADDR, p->reg.size);
 	if (ret < 0)
 		goto out;

 	ret = wlcore_raw_write32(wl, HW_PART2_START_ADDR, p->mem2.start);
 	if (ret < 0)
 		goto out;

 	ret = wlcore_raw_write32(wl, HW_PART2_SIZE_ADDR, p->mem2.size);
 	if (ret < 0)
 		goto out;

 	/* wl12xx only: We don't need the size of the last partition,
 	 * as it is automatically calculated based on the total memory
 	 * size and the sizes of the previous partitions.
 	 *
 	 * wl18xx re-defines the HW_PART3 addresses for logger over
 	 * SDIO support. wl12xx is expecting the write to
 	 * HW_PART3_START_ADDR at offset 24. This creates conflict
 	 * between the addresses.
 	 * In order to fix this the expected value is written to
 	 * HW_PART3_SIZE_ADDR instead which is at offset 24 after changes.
 	 */
 	ret = wlcore_raw_write32(wl, HW_PART3_START_ADDR, p->mem3.start);
 	if (ret < 0)
 		goto out;

 	ret = wlcore_raw_write32(wl, HW_PART3_SIZE_ADDR, p->mem3.size);
 	if (ret < 0)
 		goto out;

 out:
 	return ret;
 }
 EXPORT_SYMBOL_GPL(wlcore_set_partition);

 void wl1271_io_reset(struct wl1271 *wl)
 {
 	if (wl->if_ops->reset)
 		wl->if_ops->reset(wl->dev);
 }

 void wl1271_io_init(struct wl1271 *wl)
 {
 	if (wl->if_ops->init)
 		wl->if_ops->init(wl->dev);
 }
	/*
	* This file is part of wl1271
	*
	* Copyright (C) 2008-2010 Nokia Corporation
	*
	* Contact: Luciano Coelho <luciano.coelho@nokia.com>
	*
	* This program is free software; you can redistribute it and/or
	* modify it under the terms of the GNU General Public License
	* version 2 as published by the Free Software Foundation.
	*
	* 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; if not, write to the Free Software
	* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
	* 02110-1301 USA
	*
	*/

	#include <linux/module.h>
	#include <linux/platform_device.h>
	#include <linux/spi/spi.h>
	#include <linux/interrupt.h>

	#include "wlcore.h"
	#include "debug.h"
	#include "wl12xx_80211.h"
	#include "io.h"
	#include "tx.h"

	bool wl1271_set_block_size(struct wl1271 *wl)
	{
	if (wl->if_ops->set_block_size) {
	wl->if_ops->set_block_size(wl->dev, WL12XX_BUS_BLOCK_SIZE);
	return true;
	}

	return false;
	}

	void wlcore_disable_interrupts(struct wl1271 *wl)
	{
	disable_irq(wl->irq);
	}
	EXPORT_SYMBOL_GPL(wlcore_disable_interrupts);

	void wlcore_disable_interrupts_nosync(struct wl1271 *wl)
	{
	disable_irq_nosync(wl->irq);
	}
	EXPORT_SYMBOL_GPL(wlcore_disable_interrupts_nosync);

	void wlcore_enable_interrupts(struct wl1271 *wl)
	{
	enable_irq(wl->irq);
	}
	EXPORT_SYMBOL_GPL(wlcore_enable_interrupts);

	void wlcore_synchronize_interrupts(struct wl1271 *wl)
	{
	synchronize_irq(wl->irq);
	}
	EXPORT_SYMBOL_GPL(wlcore_synchronize_interrupts);

	int wlcore_translate_addr(struct wl1271 *wl, int addr)
	{
	struct wlcore_partition_set *part = &wl->curr_part;

	/*
	* To translate, first check to which window of addresses the
	* particular address belongs. Then subtract the starting address
	* of that window from the address. Then, add offset of the
	* translated region.
	*
	* The translated regions occur next to each other in physical device
	* memory, so just add the sizes of the preceding address regions to
	* get the offset to the new region.
	*/
	if ((addr >= part->mem.start) &&
	(addr < part->mem.start + part->mem.size))
	return addr - part->mem.start;
	else if ((addr >= part->reg.start) &&
	(addr < part->reg.start + part->reg.size))
	return addr - part->reg.start + part->mem.size;
	else if ((addr >= part->mem2.start) &&
	(addr < part->mem2.start + part->mem2.size))
	return addr - part->mem2.start + part->mem.size +
	part->reg.size;
	else if ((addr >= part->mem3.start) &&
	(addr < part->mem3.start + part->mem3.size))
	return addr - part->mem3.start + part->mem.size +
	part->reg.size + part->mem2.size;

	WARN(1, "HW address 0x%x out of range", addr);
	return 0;
	}
	EXPORT_SYMBOL_GPL(wlcore_translate_addr);

	/* Set the partitions to access the chip addresses
	*
	* To simplify driver code, a fixed (virtual) memory map is defined for
	* register and memory addresses. Because in the chipset, in different stages
	* of operation, those addresses will move around, an address translation
	* mechanism is required.
	*
	* There are four partitions (three memory and one register partition),
	* which are mapped to two different areas of the hardware memory.
	*
	* Virtual address
	* space
	*
	* \| \|
	* ...+----+--> mem.start
	* Physical address ... \| \|
	* space ... \| \| [PART_0]
	* ... \| \|
	* 00000000 <--+----+... ...+----+--> mem.start + mem.size
	* \| \| ... \| \|
	* \|MEM \| ... \| \|
	* \| \| ... \| \|
	* mem.size <--+----+... \| \| {unused area)
	* \| \| ... \| \|
	* \|REG \| ... \| \|
	* mem.size \| \| ... \| \|
	* + <--+----+... ...+----+--> reg.start
	* reg.size \| \| ... \| \|
	* \|MEM2\| ... \| \| [PART_1]
	* \| \| ... \| \|
	* ...+----+--> reg.start + reg.size
	* \| \|
	*
	*/
	int wlcore_set_partition(struct wl1271 *wl,
	const struct wlcore_partition_set *p)
	{
	int ret;

	/* copy partition info */
	memcpy(&wl->curr_part, p, sizeof(*p));

	wl1271_debug(DEBUG_IO, "mem_start %08X mem_size %08X",
	p->mem.start, p->mem.size);
	wl1271_debug(DEBUG_IO, "reg_start %08X reg_size %08X",
	p->reg.start, p->reg.size);
	wl1271_debug(DEBUG_IO, "mem2_start %08X mem2_size %08X",
	p->mem2.start, p->mem2.size);
	wl1271_debug(DEBUG_IO, "mem3_start %08X mem3_size %08X",
	p->mem3.start, p->mem3.size);

	ret = wlcore_raw_write32(wl, HW_PART0_START_ADDR, p->mem.start);
	if (ret < 0)
	goto out;

	ret = wlcore_raw_write32(wl, HW_PART0_SIZE_ADDR, p->mem.size);
	if (ret < 0)
	goto out;

	ret = wlcore_raw_write32(wl, HW_PART1_START_ADDR, p->reg.start);
	if (ret < 0)
	goto out;

	ret = wlcore_raw_write32(wl, HW_PART1_SIZE_ADDR, p->reg.size);
	if (ret < 0)
	goto out;

	ret = wlcore_raw_write32(wl, HW_PART2_START_ADDR, p->mem2.start);
	if (ret < 0)
	goto out;

	ret = wlcore_raw_write32(wl, HW_PART2_SIZE_ADDR, p->mem2.size);
	if (ret < 0)
	goto out;

	/* wl12xx only: We don't need the size of the last partition,
	* as it is automatically calculated based on the total memory
	* size and the sizes of the previous partitions.
	*
	* wl18xx re-defines the HW_PART3 addresses for logger over
	* SDIO support. wl12xx is expecting the write to
	* HW_PART3_START_ADDR at offset 24. This creates conflict
	* between the addresses.
	* In order to fix this the expected value is written to
	* HW_PART3_SIZE_ADDR instead which is at offset 24 after changes.
	*/
	ret = wlcore_raw_write32(wl, HW_PART3_START_ADDR, p->mem3.start);
	if (ret < 0)
	goto out;

	ret = wlcore_raw_write32(wl, HW_PART3_SIZE_ADDR, p->mem3.size);
	if (ret < 0)
	goto out;

	out:
	return ret;
	}
	EXPORT_SYMBOL_GPL(wlcore_set_partition);

	void wl1271_io_reset(struct wl1271 *wl)
	{
	if (wl->if_ops->reset)
	wl->if_ops->reset(wl->dev);
	}

	void wl1271_io_init(struct wl1271 *wl)
	{
	if (wl->if_ops->init)
	wl->if_ops->init(wl->dev);
	}