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bfe4b80e9f
Before we write to the device registers always check if iwl_grap_nic_access() was successful. On the way change return type of grab_nic_access() to bool, and add likely()/unlikely() statement. Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
94 lines
3.2 KiB
C
94 lines
3.2 KiB
C
/******************************************************************************
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*
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* Copyright(c) 2003 - 2012 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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#ifndef __iwl_io_h__
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#define __iwl_io_h__
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#include "iwl-devtrace.h"
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#include "iwl-shared.h"
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#include "iwl-trans.h"
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static inline void iwl_write8(struct iwl_trans *trans, u32 ofs, u8 val)
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{
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trace_iwlwifi_dev_iowrite8(trans->dev, ofs, val);
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iwl_trans_write8(trans, ofs, val);
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}
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static inline void iwl_write32(struct iwl_trans *trans, u32 ofs, u32 val)
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{
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trace_iwlwifi_dev_iowrite32(trans->dev, ofs, val);
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iwl_trans_write32(trans, ofs, val);
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}
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static inline u32 iwl_read32(struct iwl_trans *trans, u32 ofs)
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{
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u32 val = iwl_trans_read32(trans, ofs);
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trace_iwlwifi_dev_ioread32(trans->dev, ofs, val);
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return val;
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}
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void iwl_set_bit(struct iwl_trans *trans, u32 reg, u32 mask);
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void iwl_clear_bit(struct iwl_trans *trans, u32 reg, u32 mask);
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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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int iwl_poll_direct_bit(struct iwl_trans *trans, u32 addr, u32 mask,
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int timeout);
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int iwl_grab_nic_access_silent(struct iwl_trans *trans);
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bool iwl_grab_nic_access(struct iwl_trans *trans);
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void iwl_release_nic_access(struct iwl_trans *trans);
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u32 iwl_read_direct32(struct iwl_trans *trans, u32 reg);
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void iwl_write_direct32(struct iwl_trans *trans, u32 reg, u32 value);
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u32 iwl_read_prph(struct iwl_trans *trans, u32 reg);
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void iwl_write_prph(struct iwl_trans *trans, u32 addr, u32 val);
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void iwl_set_bits_prph(struct iwl_trans *trans, u32 reg, u32 mask);
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void iwl_set_bits_mask_prph(struct iwl_trans *trans, u32 reg,
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u32 bits, u32 mask);
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void iwl_clear_bits_prph(struct iwl_trans *trans, u32 reg, u32 mask);
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void _iwl_read_targ_mem_words(struct iwl_trans *trans, u32 addr,
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void *buf, int words);
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#define iwl_read_targ_mem_words(trans, addr, buf, bufsize) \
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do { \
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BUILD_BUG_ON((bufsize) % sizeof(u32)); \
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_iwl_read_targ_mem_words(trans, addr, buf, \
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(bufsize) / sizeof(u32));\
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} while (0)
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int _iwl_write_targ_mem_words(struct iwl_trans *trans, u32 addr,
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void *buf, int words);
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u32 iwl_read_targ_mem(struct iwl_trans *trans, u32 addr);
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int iwl_write_targ_mem(struct iwl_trans *trans, u32 addr, u32 val);
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#endif
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