/****************************************************************************** * * 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 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 * *****************************************************************************/ #ifndef __iwl3945_io_h__ #define __iwl3945_io_h__ #include #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