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/******************************************************************************
*
* Copyright(c) 2003 - 2012 Intel Corporation. All rights reserved.
*
* Portions of this file are derived from the ipw3945 project.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 of the GNU General Public License 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 Street, Fifth Floor, Boston, MA 02110, USA
*
* The full GNU General Public License is included in this distribution in the
* file called LICENSE.
*
* Contact Information:
* Intel Linux Wireless <ilw@linux.intel.com>
* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
*
*****************************************************************************/
#include <linux/delay.h>
#include <linux/device.h>
#include <linux/export.h>
#include "iwl-io.h"
#include "iwl-csr.h"
#include "iwl-debug.h"
#define IWL_POLL_INTERVAL 10 /* microseconds */
void __iwl_set_bit(struct iwl_trans *trans, u32 reg, u32 mask)
{
iwl_write32(trans, reg, iwl_read32(trans, reg) | mask);
}
void __iwl_clear_bit(struct iwl_trans *trans, u32 reg, u32 mask)
{
iwl_write32(trans, reg, iwl_read32(trans, reg) & ~mask);
}
void iwl_set_bit(struct iwl_trans *trans, u32 reg, u32 mask)
{
unsigned long flags;
spin_lock_irqsave(&trans->reg_lock, flags);
__iwl_set_bit(trans, reg, mask);
spin_unlock_irqrestore(&trans->reg_lock, flags);
}
EXPORT_SYMBOL_GPL(iwl_set_bit);
void iwl_clear_bit(struct iwl_trans *trans, u32 reg, u32 mask)
{
unsigned long flags;
spin_lock_irqsave(&trans->reg_lock, flags);
__iwl_clear_bit(trans, reg, mask);
spin_unlock_irqrestore(&trans->reg_lock, flags);
}
EXPORT_SYMBOL_GPL(iwl_clear_bit);
void iwl_set_bits_mask(struct iwl_trans *trans, u32 reg, u32 mask, u32 value)
{
unsigned long flags;
u32 v;
#ifdef CONFIG_IWLWIFI_DEBUG
WARN_ON_ONCE(value & ~mask);
#endif
spin_lock_irqsave(&trans->reg_lock, flags);
v = iwl_read32(trans, reg);
v &= ~mask;
v |= value;
iwl_write32(trans, reg, v);
spin_unlock_irqrestore(&trans->reg_lock, flags);
}
EXPORT_SYMBOL_GPL(iwl_set_bits_mask);
int iwl_poll_bit(struct iwl_trans *trans, u32 addr,
u32 bits, u32 mask, int timeout)
{
int t = 0;
do {
if ((iwl_read32(trans, addr) & mask) == (bits & mask))
return t;
udelay(IWL_POLL_INTERVAL);
t += IWL_POLL_INTERVAL;
} while (t < timeout);
return -ETIMEDOUT;
}
EXPORT_SYMBOL_GPL(iwl_poll_bit);
u32 iwl_read_direct32(struct iwl_trans *trans, u32 reg)
{
u32 value = 0x5a5a5a5a;
unsigned long flags;
spin_lock_irqsave(&trans->reg_lock, flags);
if (iwl_trans_grab_nic_access(trans, false)) {
value = iwl_read32(trans, reg);
iwl_trans_release_nic_access(trans);
}
spin_unlock_irqrestore(&trans->reg_lock, flags);
return value;
}
EXPORT_SYMBOL_GPL(iwl_read_direct32);
void iwl_write_direct32(struct iwl_trans *trans, u32 reg, u32 value)
{
unsigned long flags;
spin_lock_irqsave(&trans->reg_lock, flags);
if (iwl_trans_grab_nic_access(trans, false)) {
iwl_write32(trans, reg, value);
iwl_trans_release_nic_access(trans);
}
spin_unlock_irqrestore(&trans->reg_lock, flags);
}
EXPORT_SYMBOL_GPL(iwl_write_direct32);
int iwl_poll_direct_bit(struct iwl_trans *trans, u32 addr, u32 mask,
int timeout)
{
int t = 0;
do {
if ((iwl_read_direct32(trans, addr) & mask) == mask)
return t;
udelay(IWL_POLL_INTERVAL);
t += IWL_POLL_INTERVAL;
} while (t < timeout);
return -ETIMEDOUT;
}
EXPORT_SYMBOL_GPL(iwl_poll_direct_bit);
static inline u32 __iwl_read_prph(struct iwl_trans *trans, u32 ofs)
{
u32 val = iwl_trans_read_prph(trans, ofs);
trace_iwlwifi_dev_ioread_prph32(trans->dev, ofs, val);
return val;
}
static inline void __iwl_write_prph(struct iwl_trans *trans, u32 ofs, u32 val)
{
trace_iwlwifi_dev_iowrite_prph32(trans->dev, ofs, val);
iwl_trans_write_prph(trans, ofs, val);
}
u32 iwl_read_prph(struct iwl_trans *trans, u32 ofs)
{
unsigned long flags;
u32 val = 0x5a5a5a5a;
spin_lock_irqsave(&trans->reg_lock, flags);
if (iwl_trans_grab_nic_access(trans, false)) {
val = __iwl_read_prph(trans, ofs);
iwl_trans_release_nic_access(trans);
}
spin_unlock_irqrestore(&trans->reg_lock, flags);
return val;
}
EXPORT_SYMBOL_GPL(iwl_read_prph);
void iwl_write_prph(struct iwl_trans *trans, u32 ofs, u32 val)
{
unsigned long flags;
spin_lock_irqsave(&trans->reg_lock, flags);
if (iwl_trans_grab_nic_access(trans, false)) {
__iwl_write_prph(trans, ofs, val);
iwl_trans_release_nic_access(trans);
}
spin_unlock_irqrestore(&trans->reg_lock, flags);
}
EXPORT_SYMBOL_GPL(iwl_write_prph);
void iwl_set_bits_prph(struct iwl_trans *trans, u32 ofs, u32 mask)
{
unsigned long flags;
spin_lock_irqsave(&trans->reg_lock, flags);
if (iwl_trans_grab_nic_access(trans, false)) {
__iwl_write_prph(trans, ofs,
__iwl_read_prph(trans, ofs) | mask);
iwl_trans_release_nic_access(trans);
}
spin_unlock_irqrestore(&trans->reg_lock, flags);
}
EXPORT_SYMBOL_GPL(iwl_set_bits_prph);
void iwl_set_bits_mask_prph(struct iwl_trans *trans, u32 ofs,
u32 bits, u32 mask)
{
unsigned long flags;
spin_lock_irqsave(&trans->reg_lock, flags);
if (iwl_trans_grab_nic_access(trans, false)) {
__iwl_write_prph(trans, ofs,
(__iwl_read_prph(trans, ofs) & mask) | bits);
iwl_trans_release_nic_access(trans);
}
spin_unlock_irqrestore(&trans->reg_lock, flags);
}
EXPORT_SYMBOL_GPL(iwl_set_bits_mask_prph);
void iwl_clear_bits_prph(struct iwl_trans *trans, u32 ofs, u32 mask)
{
unsigned long flags;
u32 val;
spin_lock_irqsave(&trans->reg_lock, flags);
if (iwl_trans_grab_nic_access(trans, false)) {
val = __iwl_read_prph(trans, ofs);
__iwl_write_prph(trans, ofs, (val & ~mask));
iwl_trans_release_nic_access(trans);
}
spin_unlock_irqrestore(&trans->reg_lock, flags);
}
EXPORT_SYMBOL_GPL(iwl_clear_bits_prph);
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