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/*
* 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_enable_interrupts(struct wl1271 *wl)
{
enable_irq(wl->irq);
}
EXPORT_SYMBOL_GPL(wlcore_enable_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
* | |
*
*/
void wlcore_set_partition(struct wl1271 *wl,
const struct wlcore_partition_set *p)
{
/* 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);
wl1271_raw_write32(wl, HW_PART0_START_ADDR, p->mem.start);
wl1271_raw_write32(wl, HW_PART0_SIZE_ADDR, p->mem.size);
wl1271_raw_write32(wl, HW_PART1_START_ADDR, p->reg.start);
wl1271_raw_write32(wl, HW_PART1_SIZE_ADDR, p->reg.size);
wl1271_raw_write32(wl, HW_PART2_START_ADDR, p->mem2.start);
wl1271_raw_write32(wl, HW_PART2_SIZE_ADDR, p->mem2.size);
/*
* 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.
*/
wl1271_raw_write32(wl, HW_PART3_START_ADDR, p->mem3.start);
}
EXPORT_SYMBOL_GPL(wlcore_set_partition);
void wlcore_select_partition(struct wl1271 *wl, u8 part)
{
wl1271_debug(DEBUG_IO, "setting partition %d", part);
wlcore_set_partition(wl, &wl->ptable[part]);
}
EXPORT_SYMBOL_GPL(wlcore_select_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);
}
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