169 lines
4.5 KiB
C
169 lines
4.5 KiB
C
/******************************************************************************
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*
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* Copyright(c) 2003 - 2013 Intel Corporation. All rights reserved.
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*
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* Portions of this file are derived from the ipw3945 project.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
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*
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* The full GNU General Public License is included in this distribution in the
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* file called LICENSE.
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*
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* Contact Information:
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* Intel Linux Wireless <ilw@linux.intel.com>
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* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
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*
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*****************************************************************************/
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#include <linux/delay.h>
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#include <linux/device.h>
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#include <linux/export.h>
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#include "iwl-drv.h"
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#include "iwl-io.h"
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#include "iwl-csr.h"
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#include "iwl-debug.h"
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#define IWL_POLL_INTERVAL 10 /* microseconds */
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int iwl_poll_bit(struct iwl_trans *trans, u32 addr,
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u32 bits, u32 mask, int timeout)
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{
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int t = 0;
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do {
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if ((iwl_read32(trans, addr) & mask) == (bits & mask))
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return t;
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udelay(IWL_POLL_INTERVAL);
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t += IWL_POLL_INTERVAL;
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} while (t < timeout);
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return -ETIMEDOUT;
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}
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IWL_EXPORT_SYMBOL(iwl_poll_bit);
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u32 iwl_read_direct32(struct iwl_trans *trans, u32 reg)
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{
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u32 value = 0x5a5a5a5a;
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unsigned long flags;
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if (iwl_trans_grab_nic_access(trans, false, &flags)) {
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value = iwl_read32(trans, reg);
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iwl_trans_release_nic_access(trans, &flags);
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}
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return value;
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}
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IWL_EXPORT_SYMBOL(iwl_read_direct32);
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void iwl_write_direct32(struct iwl_trans *trans, u32 reg, u32 value)
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{
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unsigned long flags;
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if (iwl_trans_grab_nic_access(trans, false, &flags)) {
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iwl_write32(trans, reg, value);
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iwl_trans_release_nic_access(trans, &flags);
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}
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}
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IWL_EXPORT_SYMBOL(iwl_write_direct32);
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int iwl_poll_direct_bit(struct iwl_trans *trans, u32 addr, u32 mask,
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int timeout)
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{
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int t = 0;
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do {
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if ((iwl_read_direct32(trans, addr) & mask) == mask)
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return t;
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udelay(IWL_POLL_INTERVAL);
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t += IWL_POLL_INTERVAL;
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} while (t < timeout);
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return -ETIMEDOUT;
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}
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IWL_EXPORT_SYMBOL(iwl_poll_direct_bit);
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static inline u32 __iwl_read_prph(struct iwl_trans *trans, u32 ofs)
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{
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u32 val = iwl_trans_read_prph(trans, ofs);
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trace_iwlwifi_dev_ioread_prph32(trans->dev, ofs, val);
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return val;
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}
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static inline void __iwl_write_prph(struct iwl_trans *trans, u32 ofs, u32 val)
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{
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trace_iwlwifi_dev_iowrite_prph32(trans->dev, ofs, val);
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iwl_trans_write_prph(trans, ofs, val);
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}
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u32 iwl_read_prph(struct iwl_trans *trans, u32 ofs)
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{
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unsigned long flags;
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u32 val = 0x5a5a5a5a;
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if (iwl_trans_grab_nic_access(trans, false, &flags)) {
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val = __iwl_read_prph(trans, ofs);
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iwl_trans_release_nic_access(trans, &flags);
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}
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return val;
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}
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IWL_EXPORT_SYMBOL(iwl_read_prph);
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void iwl_write_prph(struct iwl_trans *trans, u32 ofs, u32 val)
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{
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unsigned long flags;
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if (iwl_trans_grab_nic_access(trans, false, &flags)) {
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__iwl_write_prph(trans, ofs, val);
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iwl_trans_release_nic_access(trans, &flags);
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}
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}
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IWL_EXPORT_SYMBOL(iwl_write_prph);
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void iwl_set_bits_prph(struct iwl_trans *trans, u32 ofs, u32 mask)
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{
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unsigned long flags;
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if (iwl_trans_grab_nic_access(trans, false, &flags)) {
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__iwl_write_prph(trans, ofs,
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__iwl_read_prph(trans, ofs) | mask);
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iwl_trans_release_nic_access(trans, &flags);
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}
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}
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IWL_EXPORT_SYMBOL(iwl_set_bits_prph);
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void iwl_set_bits_mask_prph(struct iwl_trans *trans, u32 ofs,
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u32 bits, u32 mask)
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{
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unsigned long flags;
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if (iwl_trans_grab_nic_access(trans, false, &flags)) {
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__iwl_write_prph(trans, ofs,
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(__iwl_read_prph(trans, ofs) & mask) | bits);
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iwl_trans_release_nic_access(trans, &flags);
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}
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}
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IWL_EXPORT_SYMBOL(iwl_set_bits_mask_prph);
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void iwl_clear_bits_prph(struct iwl_trans *trans, u32 ofs, u32 mask)
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{
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unsigned long flags;
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u32 val;
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if (iwl_trans_grab_nic_access(trans, false, &flags)) {
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val = __iwl_read_prph(trans, ofs);
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__iwl_write_prph(trans, ofs, (val & ~mask));
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iwl_trans_release_nic_access(trans, &flags);
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}
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}
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IWL_EXPORT_SYMBOL(iwl_clear_bits_prph);
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