| /****************************************************************************** |
| * |
| * Copyright(c) 2003 - 2008 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: |
| * James P. Ketrenos <ipw2100-admin@linux.intel.com> |
| * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
| * |
| *****************************************************************************/ |
| |
| #ifndef __iwl3945_io_h__ |
| #define __iwl3945_io_h__ |
| |
| #include <linux/io.h> |
| |
| #include "iwl-3945-debug.h" |
| |
| /* |
| * IO, register, and NIC memory access functions |
| * |
| * NOTE on naming convention and macro usage for these |
| * |
| * A single _ prefix before a an access function means that no state |
| * check or debug information is printed when that function is called. |
| * |
| * A double __ prefix before an access function means that state is checked |
| * and the current line number is printed in addition to any other debug output. |
| * |
| * The non-prefixed name is the #define that maps the caller into a |
| * #define that provides the caller's __LINE__ to the double prefix version. |
| * |
| * If you wish to call the function without any debug or state checking, |
| * you should use the single _ prefix version (as is used by dependent IO |
| * routines, for example _iwl3945_read_direct32 calls the non-check version of |
| * _iwl3945_read32.) |
| * |
| * These declarations are *extremely* useful in quickly isolating code deltas |
| * which result in misconfiguring of the hardware I/O. In combination with |
| * git-bisect and the IO debug level you can quickly determine the specific |
| * commit which breaks the IO sequence to the hardware. |
| * |
| */ |
| |
| #define _iwl3945_write32(priv, ofs, val) writel((val), (priv)->hw_base + (ofs)) |
| #ifdef CONFIG_IWL3945_DEBUG |
| static inline void __iwl3945_write32(const char *f, u32 l, struct iwl3945_priv *priv, |
| u32 ofs, u32 val) |
| { |
| IWL_DEBUG_IO("write32(0x%08X, 0x%08X) - %s %d\n", ofs, val, f, l); |
| _iwl3945_write32(priv, ofs, val); |
| } |
| #define iwl3945_write32(priv, ofs, val) \ |
| __iwl3945_write32(__FILE__, __LINE__, priv, ofs, val) |
| #else |
| #define iwl3945_write32(priv, ofs, val) _iwl3945_write32(priv, ofs, val) |
| #endif |
| |
| #define _iwl3945_read32(priv, ofs) readl((priv)->hw_base + (ofs)) |
| #ifdef CONFIG_IWL3945_DEBUG |
| static inline u32 __iwl3945_read32(char *f, u32 l, struct iwl3945_priv *priv, u32 ofs) |
| { |
| IWL_DEBUG_IO("read_direct32(0x%08X) - %s %d\n", ofs, f, l); |
| return _iwl3945_read32(priv, ofs); |
| } |
| #define iwl3945_read32(priv, ofs) __iwl3945_read32(__FILE__, __LINE__, priv, ofs) |
| #else |
| #define iwl3945_read32(p, o) _iwl3945_read32(p, o) |
| #endif |
| |
| static inline int _iwl3945_poll_bit(struct iwl3945_priv *priv, u32 addr, |
| u32 bits, u32 mask, int timeout) |
| { |
| int i = 0; |
| |
| do { |
| if ((_iwl3945_read32(priv, addr) & mask) == (bits & mask)) |
| return i; |
| mdelay(10); |
| i += 10; |
| } while (i < timeout); |
| |
| return -ETIMEDOUT; |
| } |
| #ifdef CONFIG_IWL3945_DEBUG |
| static inline int __iwl3945_poll_bit(const char *f, u32 l, |
| struct iwl3945_priv *priv, u32 addr, |
| u32 bits, u32 mask, int timeout) |
| { |
| int ret = _iwl3945_poll_bit(priv, addr, bits, mask, timeout); |
| IWL_DEBUG_IO("poll_bit(0x%08X, 0x%08X, 0x%08X) - %s- %s %d\n", |
| addr, bits, mask, |
| unlikely(ret == -ETIMEDOUT)?"timeout":"", f, l); |
| return ret; |
| } |
| #define iwl3945_poll_bit(priv, addr, bits, mask, timeout) \ |
| __iwl3945_poll_bit(__FILE__, __LINE__, priv, addr, bits, mask, timeout) |
| #else |
| #define iwl3945_poll_bit(p, a, b, m, t) _iwl3945_poll_bit(p, a, b, m, t) |
| #endif |
| |
| static inline void _iwl3945_set_bit(struct iwl3945_priv *priv, u32 reg, u32 mask) |
| { |
| _iwl3945_write32(priv, reg, _iwl3945_read32(priv, reg) | mask); |
| } |
| #ifdef CONFIG_IWL3945_DEBUG |
| static inline void __iwl3945_set_bit(const char *f, u32 l, |
| struct iwl3945_priv *priv, u32 reg, u32 mask) |
| { |
| u32 val = _iwl3945_read32(priv, reg) | mask; |
| IWL_DEBUG_IO("set_bit(0x%08X, 0x%08X) = 0x%08X\n", reg, mask, val); |
| _iwl3945_write32(priv, reg, val); |
| } |
| #define iwl3945_set_bit(p, r, m) __iwl3945_set_bit(__FILE__, __LINE__, p, r, m) |
| #else |
| #define iwl3945_set_bit(p, r, m) _iwl3945_set_bit(p, r, m) |
| #endif |
| |
| static inline void _iwl3945_clear_bit(struct iwl3945_priv *priv, u32 reg, u32 mask) |
| { |
| _iwl3945_write32(priv, reg, _iwl3945_read32(priv, reg) & ~mask); |
| } |
| #ifdef CONFIG_IWL3945_DEBUG |
| static inline void __iwl3945_clear_bit(const char *f, u32 l, |
| struct iwl3945_priv *priv, u32 reg, u32 mask) |
| { |
| u32 val = _iwl3945_read32(priv, reg) & ~mask; |
| IWL_DEBUG_IO("clear_bit(0x%08X, 0x%08X) = 0x%08X\n", reg, mask, val); |
| _iwl3945_write32(priv, reg, val); |
| } |
| #define iwl3945_clear_bit(p, r, m) __iwl3945_clear_bit(__FILE__, __LINE__, p, r, m) |
| #else |
| #define iwl3945_clear_bit(p, r, m) _iwl3945_clear_bit(p, r, m) |
| #endif |
| |
| static inline int _iwl3945_grab_nic_access(struct iwl3945_priv *priv) |
| { |
| int ret; |
| u32 gp_ctl; |
| |
| #ifdef CONFIG_IWL3945_DEBUG |
| if (atomic_read(&priv->restrict_refcnt)) |
| return 0; |
| #endif |
| if (test_bit(STATUS_RF_KILL_HW, &priv->status) || |
| test_bit(STATUS_RF_KILL_SW, &priv->status)) { |
| IWL_WARNING("WARNING: Requesting MAC access during RFKILL " |
| "wakes up NIC\n"); |
| |
| /* 10 msec allows time for NIC to complete its data save */ |
| gp_ctl = _iwl3945_read32(priv, CSR_GP_CNTRL); |
| if (gp_ctl & CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY) { |
| IWL_DEBUG_RF_KILL("Wait for complete power-down, " |
| "gpctl = 0x%08x\n", gp_ctl); |
| mdelay(10); |
| } else |
| IWL_DEBUG_RF_KILL("power-down complete, " |
| "gpctl = 0x%08x\n", gp_ctl); |
| } |
| |
| /* this bit wakes up the NIC */ |
| _iwl3945_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ); |
| ret = _iwl3945_poll_bit(priv, CSR_GP_CNTRL, |
| CSR_GP_CNTRL_REG_VAL_MAC_ACCESS_EN, |
| (CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY | |
| CSR_GP_CNTRL_REG_FLAG_GOING_TO_SLEEP), 50); |
| if (ret < 0) { |
| IWL_ERROR("MAC is in deep sleep!\n"); |
| return -EIO; |
| } |
| |
| #ifdef CONFIG_IWL3945_DEBUG |
| atomic_inc(&priv->restrict_refcnt); |
| #endif |
| return 0; |
| } |
| |
| #ifdef CONFIG_IWL3945_DEBUG |
| static inline int __iwl3945_grab_nic_access(const char *f, u32 l, |
| struct iwl3945_priv *priv) |
| { |
| if (atomic_read(&priv->restrict_refcnt)) |
| IWL_DEBUG_INFO("Grabbing access while already held at " |
| "line %d.\n", l); |
| |
| IWL_DEBUG_IO("grabbing nic access - %s %d\n", f, l); |
| return _iwl3945_grab_nic_access(priv); |
| } |
| #define iwl3945_grab_nic_access(priv) \ |
| __iwl3945_grab_nic_access(__FILE__, __LINE__, priv) |
| #else |
| #define iwl3945_grab_nic_access(priv) \ |
| _iwl3945_grab_nic_access(priv) |
| #endif |
| |
| static inline void _iwl3945_release_nic_access(struct iwl3945_priv *priv) |
| { |
| #ifdef CONFIG_IWL3945_DEBUG |
| if (atomic_dec_and_test(&priv->restrict_refcnt)) |
| #endif |
| _iwl3945_clear_bit(priv, CSR_GP_CNTRL, |
| CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ); |
| } |
| #ifdef CONFIG_IWL3945_DEBUG |
| static inline void __iwl3945_release_nic_access(const char *f, u32 l, |
| struct iwl3945_priv *priv) |
| { |
| if (atomic_read(&priv->restrict_refcnt) <= 0) |
| IWL_ERROR("Release unheld nic access at line %d.\n", l); |
| |
| IWL_DEBUG_IO("releasing nic access - %s %d\n", f, l); |
| _iwl3945_release_nic_access(priv); |
| } |
| #define iwl3945_release_nic_access(priv) \ |
| __iwl3945_release_nic_access(__FILE__, __LINE__, priv) |
| #else |
| #define iwl3945_release_nic_access(priv) \ |
| _iwl3945_release_nic_access(priv) |
| #endif |
| |
| static inline u32 _iwl3945_read_direct32(struct iwl3945_priv *priv, u32 reg) |
| { |
| return _iwl3945_read32(priv, reg); |
| } |
| #ifdef CONFIG_IWL3945_DEBUG |
| static inline u32 __iwl3945_read_direct32(const char *f, u32 l, |
| struct iwl3945_priv *priv, u32 reg) |
| { |
| u32 value = _iwl3945_read_direct32(priv, reg); |
| if (!atomic_read(&priv->restrict_refcnt)) |
| IWL_ERROR("Nic access not held from %s %d\n", f, l); |
| IWL_DEBUG_IO("read_direct32(0x%4X) = 0x%08x - %s %d \n", reg, value, |
| f, l); |
| return value; |
| } |
| #define iwl3945_read_direct32(priv, reg) \ |
| __iwl3945_read_direct32(__FILE__, __LINE__, priv, reg) |
| #else |
| #define iwl3945_read_direct32 _iwl3945_read_direct32 |
| #endif |
| |
| static inline void _iwl3945_write_direct32(struct iwl3945_priv *priv, |
| u32 reg, u32 value) |
| { |
| _iwl3945_write32(priv, reg, value); |
| } |
| #ifdef CONFIG_IWL3945_DEBUG |
| static void __iwl3945_write_direct32(u32 line, |
| struct iwl3945_priv *priv, u32 reg, u32 value) |
| { |
| if (!atomic_read(&priv->restrict_refcnt)) |
| IWL_ERROR("Nic access not held from line %d\n", line); |
| _iwl3945_write_direct32(priv, reg, value); |
| } |
| #define iwl3945_write_direct32(priv, reg, value) \ |
| __iwl3945_write_direct32(__LINE__, priv, reg, value) |
| #else |
| #define iwl3945_write_direct32 _iwl3945_write_direct32 |
| #endif |
| |
| static inline void iwl3945_write_reg_buf(struct iwl3945_priv *priv, |
| u32 reg, u32 len, u32 *values) |
| { |
| u32 count = sizeof(u32); |
| |
| if ((priv != NULL) && (values != NULL)) { |
| for (; 0 < len; len -= count, reg += count, values++) |
| _iwl3945_write_direct32(priv, reg, *values); |
| } |
| } |
| |
| static inline int _iwl3945_poll_direct_bit(struct iwl3945_priv *priv, |
| u32 addr, u32 mask, int timeout) |
| { |
| int i = 0; |
| |
| do { |
| if ((_iwl3945_read_direct32(priv, addr) & mask) == mask) |
| return i; |
| mdelay(10); |
| i += 10; |
| } while (i < timeout); |
| |
| return -ETIMEDOUT; |
| } |
| |
| #ifdef CONFIG_IWL3945_DEBUG |
| static inline int __iwl3945_poll_direct_bit(const char *f, u32 l, |
| struct iwl3945_priv *priv, |
| u32 addr, u32 mask, int timeout) |
| { |
| int ret = _iwl3945_poll_direct_bit(priv, addr, mask, timeout); |
| |
| if (unlikely(ret == -ETIMEDOUT)) |
| IWL_DEBUG_IO("poll_direct_bit(0x%08X, 0x%08X) - " |
| "timedout - %s %d\n", addr, mask, f, l); |
| else |
| IWL_DEBUG_IO("poll_direct_bit(0x%08X, 0x%08X) = 0x%08X " |
| "- %s %d\n", addr, mask, ret, f, l); |
| return ret; |
| } |
| #define iwl3945_poll_direct_bit(priv, addr, mask, timeout) \ |
| __iwl3945_poll_direct_bit(__FILE__, __LINE__, priv, addr, mask, timeout) |
| #else |
| #define iwl3945_poll_direct_bit _iwl3945_poll_direct_bit |
| #endif |
| |
| static inline u32 _iwl3945_read_prph(struct iwl3945_priv *priv, u32 reg) |
| { |
| _iwl3945_write_direct32(priv, HBUS_TARG_PRPH_RADDR, reg | (3 << 24)); |
| return _iwl3945_read_direct32(priv, HBUS_TARG_PRPH_RDAT); |
| } |
| #ifdef CONFIG_IWL3945_DEBUG |
| static inline u32 __iwl3945_read_prph(u32 line, struct iwl3945_priv *priv, u32 reg) |
| { |
| if (!atomic_read(&priv->restrict_refcnt)) |
| IWL_ERROR("Nic access not held from line %d\n", line); |
| return _iwl3945_read_prph(priv, reg); |
| } |
| |
| #define iwl3945_read_prph(priv, reg) \ |
| __iwl3945_read_prph(__LINE__, priv, reg) |
| #else |
| #define iwl3945_read_prph _iwl3945_read_prph |
| #endif |
| |
| static inline void _iwl3945_write_prph(struct iwl3945_priv *priv, |
| u32 addr, u32 val) |
| { |
| _iwl3945_write_direct32(priv, HBUS_TARG_PRPH_WADDR, |
| ((addr & 0x0000FFFF) | (3 << 24))); |
| _iwl3945_write_direct32(priv, HBUS_TARG_PRPH_WDAT, val); |
| } |
| #ifdef CONFIG_IWL3945_DEBUG |
| static inline void __iwl3945_write_prph(u32 line, struct iwl3945_priv *priv, |
| u32 addr, u32 val) |
| { |
| if (!atomic_read(&priv->restrict_refcnt)) |
| IWL_ERROR("Nic access from line %d\n", line); |
| _iwl3945_write_prph(priv, addr, val); |
| } |
| |
| #define iwl3945_write_prph(priv, addr, val) \ |
| __iwl3945_write_prph(__LINE__, priv, addr, val); |
| #else |
| #define iwl3945_write_prph _iwl3945_write_prph |
| #endif |
| |
| #define _iwl3945_set_bits_prph(priv, reg, mask) \ |
| _iwl3945_write_prph(priv, reg, (_iwl3945_read_prph(priv, reg) | mask)) |
| #ifdef CONFIG_IWL3945_DEBUG |
| static inline void __iwl3945_set_bits_prph(u32 line, struct iwl3945_priv *priv, |
| u32 reg, u32 mask) |
| { |
| if (!atomic_read(&priv->restrict_refcnt)) |
| IWL_ERROR("Nic access not held from line %d\n", line); |
| |
| _iwl3945_set_bits_prph(priv, reg, mask); |
| } |
| #define iwl3945_set_bits_prph(priv, reg, mask) \ |
| __iwl3945_set_bits_prph(__LINE__, priv, reg, mask) |
| #else |
| #define iwl3945_set_bits_prph _iwl3945_set_bits_prph |
| #endif |
| |
| #define _iwl3945_set_bits_mask_prph(priv, reg, bits, mask) \ |
| _iwl3945_write_prph(priv, reg, ((_iwl3945_read_prph(priv, reg) & mask) | bits)) |
| |
| #ifdef CONFIG_IWL3945_DEBUG |
| static inline void __iwl3945_set_bits_mask_prph(u32 line, |
| struct iwl3945_priv *priv, u32 reg, u32 bits, u32 mask) |
| { |
| if (!atomic_read(&priv->restrict_refcnt)) |
| IWL_ERROR("Nic access not held from line %d\n", line); |
| _iwl3945_set_bits_mask_prph(priv, reg, bits, mask); |
| } |
| #define iwl3945_set_bits_mask_prph(priv, reg, bits, mask) \ |
| __iwl3945_set_bits_mask_prph(__LINE__, priv, reg, bits, mask) |
| #else |
| #define iwl3945_set_bits_mask_prph _iwl3945_set_bits_mask_prph |
| #endif |
| |
| static inline void iwl3945_clear_bits_prph(struct iwl3945_priv |
| *priv, u32 reg, u32 mask) |
| { |
| u32 val = _iwl3945_read_prph(priv, reg); |
| _iwl3945_write_prph(priv, reg, (val & ~mask)); |
| } |
| |
| static inline u32 iwl3945_read_targ_mem(struct iwl3945_priv *priv, u32 addr) |
| { |
| iwl3945_write_direct32(priv, HBUS_TARG_MEM_RADDR, addr); |
| return iwl3945_read_direct32(priv, HBUS_TARG_MEM_RDAT); |
| } |
| |
| static inline void iwl3945_write_targ_mem(struct iwl3945_priv *priv, u32 addr, u32 val) |
| { |
| iwl3945_write_direct32(priv, HBUS_TARG_MEM_WADDR, addr); |
| iwl3945_write_direct32(priv, HBUS_TARG_MEM_WDAT, val); |
| } |
| |
| static inline void iwl3945_write_targ_mem_buf(struct iwl3945_priv *priv, u32 addr, |
| u32 len, u32 *values) |
| { |
| iwl3945_write_direct32(priv, HBUS_TARG_MEM_WADDR, addr); |
| for (; 0 < len; len -= sizeof(u32), values++) |
| iwl3945_write_direct32(priv, HBUS_TARG_MEM_WDAT, *values); |
| } |
| #endif |