eb7ae89cb0
Also fix a copy and paste error in header of iwl-core.c. This file is not dual licensed. Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
426 lines
14 KiB
C
426 lines
14 KiB
C
/******************************************************************************
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*
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* Copyright(c) 2003 - 2008 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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* James P. Ketrenos <ipw2100-admin@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 __iwl4965_io_h__
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#define __iwl4965_io_h__
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#include <linux/io.h>
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#include "iwl-4965-debug.h"
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/*
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* IO, register, and NIC memory access functions
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*
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* NOTE on naming convention and macro usage for these
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*
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* A single _ prefix before a an access function means that no state
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* check or debug information is printed when that function is called.
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*
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* A double __ prefix before an access function means that state is checked
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* and the current line number is printed in addition to any other debug output.
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*
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* The non-prefixed name is the #define that maps the caller into a
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* #define that provides the caller's __LINE__ to the double prefix version.
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*
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* If you wish to call the function without any debug or state checking,
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* you should use the single _ prefix version (as is used by dependent IO
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* routines, for example _iwl4965_read_direct32 calls the non-check version of
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* _iwl4965_read32.)
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*
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* These declarations are *extremely* useful in quickly isolating code deltas
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* which result in misconfiguring of the hardware I/O. In combination with
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* git-bisect and the IO debug level you can quickly determine the specific
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* commit which breaks the IO sequence to the hardware.
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*
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*/
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#define _iwl4965_write32(priv, ofs, val) writel((val), (priv)->hw_base + (ofs))
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#ifdef CONFIG_IWL4965_DEBUG
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static inline void __iwl4965_write32(const char *f, u32 l, struct iwl4965_priv *priv,
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u32 ofs, u32 val)
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{
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IWL_DEBUG_IO("write32(0x%08X, 0x%08X) - %s %d\n", ofs, val, f, l);
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_iwl4965_write32(priv, ofs, val);
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}
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#define iwl4965_write32(priv, ofs, val) \
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__iwl4965_write32(__FILE__, __LINE__, priv, ofs, val)
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#else
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#define iwl4965_write32(priv, ofs, val) _iwl4965_write32(priv, ofs, val)
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#endif
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#define _iwl4965_read32(priv, ofs) readl((priv)->hw_base + (ofs))
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#ifdef CONFIG_IWL4965_DEBUG
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static inline u32 __iwl4965_read32(char *f, u32 l, struct iwl4965_priv *priv, u32 ofs)
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{
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IWL_DEBUG_IO("read_direct32(0x%08X) - %s %d\n", ofs, f, l);
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return _iwl4965_read32(priv, ofs);
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}
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#define iwl4965_read32(priv, ofs) __iwl4965_read32(__FILE__, __LINE__, priv, ofs)
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#else
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#define iwl4965_read32(p, o) _iwl4965_read32(p, o)
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#endif
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static inline int _iwl4965_poll_bit(struct iwl4965_priv *priv, u32 addr,
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u32 bits, u32 mask, int timeout)
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{
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int i = 0;
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do {
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if ((_iwl4965_read32(priv, addr) & mask) == (bits & mask))
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return i;
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mdelay(10);
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i += 10;
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} while (i < timeout);
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return -ETIMEDOUT;
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}
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#ifdef CONFIG_IWL4965_DEBUG
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static inline int __iwl4965_poll_bit(const char *f, u32 l,
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struct iwl4965_priv *priv, u32 addr,
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u32 bits, u32 mask, int timeout)
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{
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int ret = _iwl4965_poll_bit(priv, addr, bits, mask, timeout);
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IWL_DEBUG_IO("poll_bit(0x%08X, 0x%08X, 0x%08X) - %s- %s %d\n",
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addr, bits, mask,
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unlikely(ret == -ETIMEDOUT)?"timeout":"", f, l);
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return ret;
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}
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#define iwl4965_poll_bit(priv, addr, bits, mask, timeout) \
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__iwl4965_poll_bit(__FILE__, __LINE__, priv, addr, bits, mask, timeout)
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#else
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#define iwl4965_poll_bit(p, a, b, m, t) _iwl4965_poll_bit(p, a, b, m, t)
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#endif
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static inline void _iwl4965_set_bit(struct iwl4965_priv *priv, u32 reg, u32 mask)
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{
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_iwl4965_write32(priv, reg, _iwl4965_read32(priv, reg) | mask);
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}
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#ifdef CONFIG_IWL4965_DEBUG
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static inline void __iwl4965_set_bit(const char *f, u32 l,
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struct iwl4965_priv *priv, u32 reg, u32 mask)
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{
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u32 val = _iwl4965_read32(priv, reg) | mask;
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IWL_DEBUG_IO("set_bit(0x%08X, 0x%08X) = 0x%08X\n", reg, mask, val);
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_iwl4965_write32(priv, reg, val);
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}
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#define iwl4965_set_bit(p, r, m) __iwl4965_set_bit(__FILE__, __LINE__, p, r, m)
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#else
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#define iwl4965_set_bit(p, r, m) _iwl4965_set_bit(p, r, m)
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#endif
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static inline void _iwl4965_clear_bit(struct iwl4965_priv *priv, u32 reg, u32 mask)
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{
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_iwl4965_write32(priv, reg, _iwl4965_read32(priv, reg) & ~mask);
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}
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#ifdef CONFIG_IWL4965_DEBUG
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static inline void __iwl4965_clear_bit(const char *f, u32 l,
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struct iwl4965_priv *priv, u32 reg, u32 mask)
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{
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u32 val = _iwl4965_read32(priv, reg) & ~mask;
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IWL_DEBUG_IO("clear_bit(0x%08X, 0x%08X) = 0x%08X\n", reg, mask, val);
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_iwl4965_write32(priv, reg, val);
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}
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#define iwl4965_clear_bit(p, r, m) __iwl4965_clear_bit(__FILE__, __LINE__, p, r, m)
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#else
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#define iwl4965_clear_bit(p, r, m) _iwl4965_clear_bit(p, r, m)
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#endif
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static inline int _iwl4965_grab_nic_access(struct iwl4965_priv *priv)
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{
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int ret;
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u32 gp_ctl;
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#ifdef CONFIG_IWL4965_DEBUG
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if (atomic_read(&priv->restrict_refcnt))
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return 0;
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#endif
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if (test_bit(STATUS_RF_KILL_HW, &priv->status) ||
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test_bit(STATUS_RF_KILL_SW, &priv->status)) {
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IWL_WARNING("WARNING: Requesting MAC access during RFKILL "
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"wakes up NIC\n");
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/* 10 msec allows time for NIC to complete its data save */
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gp_ctl = _iwl4965_read32(priv, CSR_GP_CNTRL);
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if (gp_ctl & CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY) {
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IWL_DEBUG_RF_KILL("Wait for complete power-down, "
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"gpctl = 0x%08x\n", gp_ctl);
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mdelay(10);
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} else
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IWL_DEBUG_RF_KILL("power-down complete, "
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"gpctl = 0x%08x\n", gp_ctl);
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}
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/* this bit wakes up the NIC */
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_iwl4965_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
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ret = _iwl4965_poll_bit(priv, CSR_GP_CNTRL,
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CSR_GP_CNTRL_REG_VAL_MAC_ACCESS_EN,
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(CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY |
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CSR_GP_CNTRL_REG_FLAG_GOING_TO_SLEEP), 50);
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if (ret < 0) {
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IWL_ERROR("MAC is in deep sleep!\n");
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return -EIO;
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}
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#ifdef CONFIG_IWL4965_DEBUG
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atomic_inc(&priv->restrict_refcnt);
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#endif
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return 0;
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}
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#ifdef CONFIG_IWL4965_DEBUG
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static inline int __iwl4965_grab_nic_access(const char *f, u32 l,
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struct iwl4965_priv *priv)
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{
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if (atomic_read(&priv->restrict_refcnt))
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IWL_DEBUG_INFO("Grabbing access while already held at "
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"line %d.\n", l);
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IWL_DEBUG_IO("grabbing nic access - %s %d\n", f, l);
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return _iwl4965_grab_nic_access(priv);
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}
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#define iwl4965_grab_nic_access(priv) \
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__iwl4965_grab_nic_access(__FILE__, __LINE__, priv)
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#else
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#define iwl4965_grab_nic_access(priv) \
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_iwl4965_grab_nic_access(priv)
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#endif
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static inline void _iwl4965_release_nic_access(struct iwl4965_priv *priv)
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{
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#ifdef CONFIG_IWL4965_DEBUG
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if (atomic_dec_and_test(&priv->restrict_refcnt))
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#endif
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_iwl4965_clear_bit(priv, CSR_GP_CNTRL,
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CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
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}
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#ifdef CONFIG_IWL4965_DEBUG
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static inline void __iwl4965_release_nic_access(const char *f, u32 l,
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struct iwl4965_priv *priv)
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{
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if (atomic_read(&priv->restrict_refcnt) <= 0)
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IWL_ERROR("Release unheld nic access at line %d.\n", l);
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IWL_DEBUG_IO("releasing nic access - %s %d\n", f, l);
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_iwl4965_release_nic_access(priv);
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}
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#define iwl4965_release_nic_access(priv) \
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__iwl4965_release_nic_access(__FILE__, __LINE__, priv)
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#else
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#define iwl4965_release_nic_access(priv) \
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_iwl4965_release_nic_access(priv)
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#endif
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static inline u32 _iwl4965_read_direct32(struct iwl4965_priv *priv, u32 reg)
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{
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return _iwl4965_read32(priv, reg);
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}
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#ifdef CONFIG_IWL4965_DEBUG
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static inline u32 __iwl4965_read_direct32(const char *f, u32 l,
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struct iwl4965_priv *priv, u32 reg)
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{
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u32 value = _iwl4965_read_direct32(priv, reg);
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if (!atomic_read(&priv->restrict_refcnt))
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IWL_ERROR("Nic access not held from %s %d\n", f, l);
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IWL_DEBUG_IO("read_direct32(0x%4X) = 0x%08x - %s %d \n", reg, value,
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f, l);
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return value;
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}
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#define iwl4965_read_direct32(priv, reg) \
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__iwl4965_read_direct32(__FILE__, __LINE__, priv, reg)
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#else
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#define iwl4965_read_direct32 _iwl4965_read_direct32
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#endif
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static inline void _iwl4965_write_direct32(struct iwl4965_priv *priv,
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u32 reg, u32 value)
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{
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_iwl4965_write32(priv, reg, value);
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}
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#ifdef CONFIG_IWL4965_DEBUG
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static void __iwl4965_write_direct32(u32 line,
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struct iwl4965_priv *priv, u32 reg, u32 value)
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{
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if (!atomic_read(&priv->restrict_refcnt))
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IWL_ERROR("Nic access not held from line %d\n", line);
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_iwl4965_write_direct32(priv, reg, value);
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}
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#define iwl4965_write_direct32(priv, reg, value) \
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__iwl4965_write_direct32(__LINE__, priv, reg, value)
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#else
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#define iwl4965_write_direct32 _iwl4965_write_direct32
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#endif
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static inline void iwl4965_write_reg_buf(struct iwl4965_priv *priv,
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u32 reg, u32 len, u32 *values)
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{
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u32 count = sizeof(u32);
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if ((priv != NULL) && (values != NULL)) {
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for (; 0 < len; len -= count, reg += count, values++)
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_iwl4965_write_direct32(priv, reg, *values);
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}
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}
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static inline int _iwl4965_poll_direct_bit(struct iwl4965_priv *priv,
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u32 addr, u32 mask, int timeout)
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{
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int i = 0;
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do {
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if ((_iwl4965_read_direct32(priv, addr) & mask) == mask)
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return i;
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mdelay(10);
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i += 10;
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} while (i < timeout);
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return -ETIMEDOUT;
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}
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#ifdef CONFIG_IWL4965_DEBUG
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static inline int __iwl4965_poll_direct_bit(const char *f, u32 l,
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struct iwl4965_priv *priv,
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u32 addr, u32 mask, int timeout)
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{
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int ret = _iwl4965_poll_direct_bit(priv, addr, mask, timeout);
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if (unlikely(ret == -ETIMEDOUT))
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IWL_DEBUG_IO("poll_direct_bit(0x%08X, 0x%08X) - "
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"timedout - %s %d\n", addr, mask, f, l);
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else
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IWL_DEBUG_IO("poll_direct_bit(0x%08X, 0x%08X) = 0x%08X "
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"- %s %d\n", addr, mask, ret, f, l);
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return ret;
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}
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#define iwl4965_poll_direct_bit(priv, addr, mask, timeout) \
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__iwl4965_poll_direct_bit(__FILE__, __LINE__, priv, addr, mask, timeout)
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#else
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#define iwl4965_poll_direct_bit _iwl4965_poll_direct_bit
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#endif
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static inline u32 _iwl4965_read_prph(struct iwl4965_priv *priv, u32 reg)
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{
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_iwl4965_write_direct32(priv, HBUS_TARG_PRPH_RADDR, reg | (3 << 24));
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return _iwl4965_read_direct32(priv, HBUS_TARG_PRPH_RDAT);
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}
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#ifdef CONFIG_IWL4965_DEBUG
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static inline u32 __iwl4965_read_prph(u32 line, struct iwl4965_priv *priv, u32 reg)
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{
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if (!atomic_read(&priv->restrict_refcnt))
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IWL_ERROR("Nic access not held from line %d\n", line);
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return _iwl4965_read_prph(priv, reg);
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}
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#define iwl4965_read_prph(priv, reg) \
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__iwl4965_read_prph(__LINE__, priv, reg)
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#else
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#define iwl4965_read_prph _iwl4965_read_prph
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#endif
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static inline void _iwl4965_write_prph(struct iwl4965_priv *priv,
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u32 addr, u32 val)
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{
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_iwl4965_write_direct32(priv, HBUS_TARG_PRPH_WADDR,
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((addr & 0x0000FFFF) | (3 << 24)));
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_iwl4965_write_direct32(priv, HBUS_TARG_PRPH_WDAT, val);
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}
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#ifdef CONFIG_IWL4965_DEBUG
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static inline void __iwl4965_write_prph(u32 line, struct iwl4965_priv *priv,
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u32 addr, u32 val)
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{
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if (!atomic_read(&priv->restrict_refcnt))
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IWL_ERROR("Nic access from line %d\n", line);
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_iwl4965_write_prph(priv, addr, val);
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}
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#define iwl4965_write_prph(priv, addr, val) \
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__iwl4965_write_prph(__LINE__, priv, addr, val);
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#else
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#define iwl4965_write_prph _iwl4965_write_prph
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#endif
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#define _iwl4965_set_bits_prph(priv, reg, mask) \
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_iwl4965_write_prph(priv, reg, (_iwl4965_read_prph(priv, reg) | mask))
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#ifdef CONFIG_IWL4965_DEBUG
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static inline void __iwl4965_set_bits_prph(u32 line, struct iwl4965_priv *priv,
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u32 reg, u32 mask)
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{
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if (!atomic_read(&priv->restrict_refcnt))
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IWL_ERROR("Nic access not held from line %d\n", line);
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_iwl4965_set_bits_prph(priv, reg, mask);
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}
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#define iwl4965_set_bits_prph(priv, reg, mask) \
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__iwl4965_set_bits_prph(__LINE__, priv, reg, mask)
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#else
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#define iwl4965_set_bits_prph _iwl4965_set_bits_prph
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#endif
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#define _iwl4965_set_bits_mask_prph(priv, reg, bits, mask) \
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_iwl4965_write_prph(priv, reg, ((_iwl4965_read_prph(priv, reg) & mask) | bits))
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#ifdef CONFIG_IWL4965_DEBUG
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static inline void __iwl4965_set_bits_mask_prph(u32 line,
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struct iwl4965_priv *priv, u32 reg, u32 bits, u32 mask)
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{
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if (!atomic_read(&priv->restrict_refcnt))
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IWL_ERROR("Nic access not held from line %d\n", line);
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_iwl4965_set_bits_mask_prph(priv, reg, bits, mask);
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}
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#define iwl4965_set_bits_mask_prph(priv, reg, bits, mask) \
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__iwl4965_set_bits_mask_prph(__LINE__, priv, reg, bits, mask)
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#else
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#define iwl4965_set_bits_mask_prph _iwl4965_set_bits_mask_prph
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#endif
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static inline void iwl4965_clear_bits_prph(struct iwl4965_priv
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*priv, u32 reg, u32 mask)
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{
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u32 val = _iwl4965_read_prph(priv, reg);
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_iwl4965_write_prph(priv, reg, (val & ~mask));
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}
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static inline u32 iwl4965_read_targ_mem(struct iwl4965_priv *priv, u32 addr)
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{
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iwl4965_write_direct32(priv, HBUS_TARG_MEM_RADDR, addr);
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return iwl4965_read_direct32(priv, HBUS_TARG_MEM_RDAT);
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}
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static inline void iwl4965_write_targ_mem(struct iwl4965_priv *priv, u32 addr, u32 val)
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{
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iwl4965_write_direct32(priv, HBUS_TARG_MEM_WADDR, addr);
|
|
iwl4965_write_direct32(priv, HBUS_TARG_MEM_WDAT, val);
|
|
}
|
|
|
|
static inline void iwl4965_write_targ_mem_buf(struct iwl4965_priv *priv, u32 addr,
|
|
u32 len, u32 *values)
|
|
{
|
|
iwl4965_write_direct32(priv, HBUS_TARG_MEM_WADDR, addr);
|
|
for (; 0 < len; len -= sizeof(u32), values++)
|
|
iwl4965_write_direct32(priv, HBUS_TARG_MEM_WDAT, *values);
|
|
}
|
|
#endif
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