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4119904f3e
There are a few cases like the WoWLAN support I'm writing that require attempting to access the NIC when it is known that it might not be accessible, e.g. after the system woke up and the platform might have reset the device. To avoid messages in this case, introduce the new function iwl_grab_nic_access_silent(), it will only return an error status. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
93 lines
3.1 KiB
C
93 lines
3.1 KiB
C
/******************************************************************************
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*
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* Copyright(c) 2003 - 2011 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 <linux/io.h>
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#include "iwl-dev.h"
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#include "iwl-debug.h"
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#include "iwl-devtrace.h"
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static inline void iwl_write8(struct iwl_priv *priv, u32 ofs, u8 val)
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{
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trace_iwlwifi_dev_iowrite8(priv, ofs, val);
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iowrite8(val, priv->hw_base + ofs);
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}
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static inline void iwl_write32(struct iwl_priv *priv, u32 ofs, u32 val)
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{
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trace_iwlwifi_dev_iowrite32(priv, ofs, val);
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iowrite32(val, priv->hw_base + ofs);
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}
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static inline u32 iwl_read32(struct iwl_priv *priv, u32 ofs)
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{
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u32 val = ioread32(priv->hw_base + ofs);
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trace_iwlwifi_dev_ioread32(priv, ofs, val);
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return val;
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}
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void iwl_set_bit(struct iwl_priv *priv, u32 reg, u32 mask);
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void iwl_clear_bit(struct iwl_priv *priv, u32 reg, u32 mask);
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int iwl_poll_bit(struct iwl_priv *priv, u32 addr,
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u32 bits, u32 mask, int timeout);
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int iwl_poll_direct_bit(struct iwl_priv *priv, u32 addr, u32 mask,
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int timeout);
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int iwl_grab_nic_access_silent(struct iwl_priv *priv);
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int iwl_grab_nic_access(struct iwl_priv *priv);
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void iwl_release_nic_access(struct iwl_priv *priv);
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u32 iwl_read_direct32(struct iwl_priv *priv, u32 reg);
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void iwl_write_direct32(struct iwl_priv *priv, u32 reg, u32 value);
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u32 iwl_read_prph(struct iwl_priv *priv, u32 reg);
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void iwl_write_prph(struct iwl_priv *priv, u32 addr, u32 val);
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void iwl_set_bits_prph(struct iwl_priv *priv, u32 reg, u32 mask);
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void iwl_set_bits_mask_prph(struct iwl_priv *priv, u32 reg,
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u32 bits, u32 mask);
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void iwl_clear_bits_prph(struct iwl_priv *priv, u32 reg, u32 mask);
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void _iwl_read_targ_mem_words(struct iwl_priv *priv, u32 addr,
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void *buf, int words);
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#define iwl_read_targ_mem_words(priv, 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(priv, addr, buf, \
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(bufsize) / sizeof(u32));\
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} while (0)
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u32 iwl_read_targ_mem(struct iwl_priv *priv, u32 addr);
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void iwl_write_targ_mem(struct iwl_priv *priv, u32 addr, u32 val);
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#endif
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