diff options
Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl-io.h')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-io.h | 415 |
1 files changed, 37 insertions, 378 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-io.h b/drivers/net/wireless/iwlwifi/iwl-io.h index 5bc3df432d2..705d12c079e 100644 --- a/drivers/net/wireless/iwlwifi/iwl-io.h +++ b/drivers/net/wireless/iwlwifi/iwl-io.h @@ -1,6 +1,6 @@ /****************************************************************************** * - * Copyright(c) 2003 - 2008 Intel Corporation. All rights reserved. + * Copyright(c) 2003 - 2014 Intel Corporation. All rights reserved. * * Portions of this file are derived from the ipw3945 project. * @@ -21,7 +21,7 @@ * file called LICENSE. * * Contact Information: - * James P. Ketrenos <ipw2100-admin@linux.intel.com> + * Intel Linux Wireless <ilw@linux.intel.com> * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 * *****************************************************************************/ @@ -29,401 +29,60 @@ #ifndef __iwl_io_h__ #define __iwl_io_h__ -#include <linux/io.h> +#include "iwl-devtrace.h" +#include "iwl-trans.h" -#include "iwl-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 and caller function name are 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 name and __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 _iwl_read_direct32 calls the non-check version of - * _iwl_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 _iwl_write32(priv, ofs, val) writel((val), (priv)->hw_base + (ofs)) -#ifdef CONFIG_IWLWIFI_DEBUG -static inline void __iwl_write32(const char *f, u32 l, struct iwl_priv *priv, - u32 ofs, u32 val) -{ - IWL_DEBUG_IO("write32(0x%08X, 0x%08X) - %s %d\n", ofs, val, f, l); - _iwl_write32(priv, ofs, val); -} -#define iwl_write32(priv, ofs, val) \ - __iwl_write32(__FILE__, __LINE__, priv, ofs, val) -#else -#define iwl_write32(priv, ofs, val) _iwl_write32(priv, ofs, val) -#endif - -#define _iwl_read32(priv, ofs) readl((priv)->hw_base + (ofs)) -#ifdef CONFIG_IWLWIFI_DEBUG -static inline u32 __iwl_read32(char *f, u32 l, struct iwl_priv *priv, u32 ofs) -{ - IWL_DEBUG_IO("read_direct32(0x%08X) - %s %d\n", ofs, f, l); - return _iwl_read32(priv, ofs); -} -#define iwl_read32(priv, ofs) __iwl_read32(__FILE__, __LINE__, priv, ofs) -#else -#define iwl_read32(p, o) _iwl_read32(p, o) -#endif - -static inline int _iwl_poll_bit(struct iwl_priv *priv, u32 addr, - u32 bits, u32 mask, int timeout) -{ - int i = 0; - - do { - if ((_iwl_read32(priv, addr) & mask) == (bits & mask)) - return i; - mdelay(10); - i += 10; - } while (i < timeout); - - return -ETIMEDOUT; -} -#ifdef CONFIG_IWLWIFI_DEBUG -static inline int __iwl_poll_bit(const char *f, u32 l, - struct iwl_priv *priv, u32 addr, - u32 bits, u32 mask, int timeout) -{ - int ret = _iwl_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 iwl_poll_bit(priv, addr, bits, mask, timeout) \ - __iwl_poll_bit(__FILE__, __LINE__, priv, addr, bits, mask, timeout) -#else -#define iwl_poll_bit(p, a, b, m, t) _iwl_poll_bit(p, a, b, m, t) -#endif - -static inline void _iwl_set_bit(struct iwl_priv *priv, u32 reg, u32 mask) -{ - _iwl_write32(priv, reg, _iwl_read32(priv, reg) | mask); -} -#ifdef CONFIG_IWLWIFI_DEBUG -static inline void __iwl_set_bit(const char *f, u32 l, - struct iwl_priv *priv, u32 reg, u32 mask) -{ - u32 val = _iwl_read32(priv, reg) | mask; - IWL_DEBUG_IO("set_bit(0x%08X, 0x%08X) = 0x%08X\n", reg, mask, val); - _iwl_write32(priv, reg, val); -} -#define iwl_set_bit(p, r, m) __iwl_set_bit(__FILE__, __LINE__, p, r, m) -#else -#define iwl_set_bit(p, r, m) _iwl_set_bit(p, r, m) -#endif - -static inline void _iwl_clear_bit(struct iwl_priv *priv, u32 reg, u32 mask) -{ - _iwl_write32(priv, reg, _iwl_read32(priv, reg) & ~mask); -} -#ifdef CONFIG_IWLWIFI_DEBUG -static inline void __iwl_clear_bit(const char *f, u32 l, - struct iwl_priv *priv, u32 reg, u32 mask) -{ - u32 val = _iwl_read32(priv, reg) & ~mask; - IWL_DEBUG_IO("clear_bit(0x%08X, 0x%08X) = 0x%08X\n", reg, mask, val); - _iwl_write32(priv, reg, val); -} -#define iwl_clear_bit(p, r, m) __iwl_clear_bit(__FILE__, __LINE__, p, r, m) -#else -#define iwl_clear_bit(p, r, m) _iwl_clear_bit(p, r, m) -#endif - -static inline int _iwl_grab_nic_access(struct iwl_priv *priv) -{ - int ret; - u32 gp_ctl; - -#ifdef CONFIG_IWLWIFI_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 = _iwl_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 */ - _iwl_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ); - ret = _iwl_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_IWLWIFI_DEBUG - atomic_inc(&priv->restrict_refcnt); -#endif - return 0; -} - -#ifdef CONFIG_IWLWIFI_DEBUG -static inline int __iwl_grab_nic_access(const char *f, u32 l, - struct iwl_priv *priv) -{ - if (atomic_read(&priv->restrict_refcnt)) - IWL_ERROR("Grabbing access while already held %s %d.\n", f, l); - - IWL_DEBUG_IO("grabbing nic access - %s %d\n", f, l); - return _iwl_grab_nic_access(priv); -} -#define iwl_grab_nic_access(priv) \ - __iwl_grab_nic_access(__FILE__, __LINE__, priv) -#else -#define iwl_grab_nic_access(priv) \ - _iwl_grab_nic_access(priv) -#endif - -static inline void _iwl_release_nic_access(struct iwl_priv *priv) -{ -#ifdef CONFIG_IWLWIFI_DEBUG - if (atomic_dec_and_test(&priv->restrict_refcnt)) -#endif - _iwl_clear_bit(priv, CSR_GP_CNTRL, - CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ); -} -#ifdef CONFIG_IWLWIFI_DEBUG -static inline void __iwl_release_nic_access(const char *f, u32 l, - struct iwl_priv *priv) -{ - if (atomic_read(&priv->restrict_refcnt) <= 0) - IWL_ERROR("Release unheld nic access at line %s %d.\n", f, l); - - IWL_DEBUG_IO("releasing nic access - %s %d\n", f, l); - _iwl_release_nic_access(priv); -} -#define iwl_release_nic_access(priv) \ - __iwl_release_nic_access(__FILE__, __LINE__, priv) -#else -#define iwl_release_nic_access(priv) \ - _iwl_release_nic_access(priv) -#endif - -static inline u32 _iwl_read_direct32(struct iwl_priv *priv, u32 reg) -{ - return _iwl_read32(priv, reg); -} -#ifdef CONFIG_IWLWIFI_DEBUG -static inline u32 __iwl_read_direct32(const char *f, u32 l, - struct iwl_priv *priv, u32 reg) -{ - u32 value = _iwl_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 iwl_read_direct32(priv, reg) \ - __iwl_read_direct32(__FILE__, __LINE__, priv, reg) -#else -#define iwl_read_direct32 _iwl_read_direct32 -#endif - -static inline void _iwl_write_direct32(struct iwl_priv *priv, - u32 reg, u32 value) -{ - _iwl_write32(priv, reg, value); -} -#ifdef CONFIG_IWLWIFI_DEBUG -static void __iwl_write_direct32(const char *f , u32 line, - struct iwl_priv *priv, u32 reg, u32 value) -{ - if (!atomic_read(&priv->restrict_refcnt)) - IWL_ERROR("Nic access not held from %s line %d\n", f, line); - _iwl_write_direct32(priv, reg, value); -} -#define iwl_write_direct32(priv, reg, value) \ - __iwl_write_direct32(__func__, __LINE__, priv, reg, value) -#else -#define iwl_write_direct32 _iwl_write_direct32 -#endif - -static inline void iwl_write_reg_buf(struct iwl_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++) - _iwl_write_direct32(priv, reg, *values); - } -} - -static inline int _iwl_poll_direct_bit(struct iwl_priv *priv, - u32 addr, u32 mask, int timeout) +static inline void iwl_write8(struct iwl_trans *trans, u32 ofs, u8 val) { - int i = 0; - - do { - if ((_iwl_read_direct32(priv, addr) & mask) == mask) - return i; - mdelay(10); - i += 10; - } while (i < timeout); - - return -ETIMEDOUT; + trace_iwlwifi_dev_iowrite8(trans->dev, ofs, val); + iwl_trans_write8(trans, ofs, val); } -#ifdef CONFIG_IWLWIFI_DEBUG -static inline int __iwl_poll_direct_bit(const char *f, u32 l, - struct iwl_priv *priv, - u32 addr, u32 mask, int timeout) +static inline void iwl_write32(struct iwl_trans *trans, u32 ofs, u32 val) { - int ret = _iwl_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; + trace_iwlwifi_dev_iowrite32(trans->dev, ofs, val); + iwl_trans_write32(trans, ofs, val); } -#define iwl_poll_direct_bit(priv, addr, mask, timeout) \ - __iwl_poll_direct_bit(__FILE__, __LINE__, priv, addr, mask, timeout) -#else -#define iwl_poll_direct_bit _iwl_poll_direct_bit -#endif -static inline u32 _iwl_read_prph(struct iwl_priv *priv, u32 reg) +static inline u32 iwl_read32(struct iwl_trans *trans, u32 ofs) { - _iwl_write_direct32(priv, HBUS_TARG_PRPH_RADDR, reg | (3 << 24)); - return _iwl_read_direct32(priv, HBUS_TARG_PRPH_RDAT); -} -#ifdef CONFIG_IWLWIFI_DEBUG -static inline u32 __iwl_read_prph(const char *f, u32 line, - struct iwl_priv *priv, u32 reg) -{ - if (!atomic_read(&priv->restrict_refcnt)) - IWL_ERROR("Nic access not held from %s line %d\n", f, line); - return _iwl_read_prph(priv, reg); + u32 val = iwl_trans_read32(trans, ofs); + trace_iwlwifi_dev_ioread32(trans->dev, ofs, val); + return val; } -#define iwl_read_prph(priv, reg) \ - __iwl_read_prph(__func__, __LINE__, priv, reg) -#else -#define iwl_read_prph _iwl_read_prph -#endif - -static inline void _iwl_write_prph(struct iwl_priv *priv, - u32 addr, u32 val) -{ - _iwl_write_direct32(priv, HBUS_TARG_PRPH_WADDR, - ((addr & 0x0000FFFF) | (3 << 24))); - _iwl_write_direct32(priv, HBUS_TARG_PRPH_WDAT, val); -} -#ifdef CONFIG_IWLWIFI_DEBUG -static inline void __iwl_write_prph(const char *f, u32 line, - struct iwl_priv *priv, u32 addr, u32 val) +static inline void iwl_set_bit(struct iwl_trans *trans, u32 reg, u32 mask) { - if (!atomic_read(&priv->restrict_refcnt)) - IWL_ERROR("Nic access not held from %s line %d\n", f, line); - _iwl_write_prph(priv, addr, val); + iwl_trans_set_bits_mask(trans, reg, mask, mask); } -#define iwl_write_prph(priv, addr, val) \ - __iwl_write_prph(__func__, __LINE__, priv, addr, val); -#else -#define iwl_write_prph _iwl_write_prph -#endif - -#define _iwl_set_bits_prph(priv, reg, mask) \ - _iwl_write_prph(priv, reg, (_iwl_read_prph(priv, reg) | mask)) -#ifdef CONFIG_IWLWIFI_DEBUG -static inline void __iwl_set_bits_prph(const char *f, u32 line, - struct iwl_priv *priv, - u32 reg, u32 mask) +static inline void iwl_clear_bit(struct iwl_trans *trans, u32 reg, u32 mask) { - if (!atomic_read(&priv->restrict_refcnt)) - IWL_ERROR("Nic access not held from %s line %d\n", f, line); - - _iwl_set_bits_prph(priv, reg, mask); + iwl_trans_set_bits_mask(trans, reg, mask, 0); } -#define iwl_set_bits_prph(priv, reg, mask) \ - __iwl_set_bits_prph(__func__, __LINE__, priv, reg, mask) -#else -#define iwl_set_bits_prph _iwl_set_bits_prph -#endif -#define _iwl_set_bits_mask_prph(priv, reg, bits, mask) \ - _iwl_write_prph(priv, reg, ((_iwl_read_prph(priv, reg) & mask) | bits)) +int iwl_poll_bit(struct iwl_trans *trans, u32 addr, + u32 bits, u32 mask, int timeout); +int iwl_poll_direct_bit(struct iwl_trans *trans, u32 addr, u32 mask, + int timeout); -#ifdef CONFIG_IWLWIFI_DEBUG -static inline void __iwl_set_bits_mask_prph(const char *f, u32 line, - struct iwl_priv *priv, u32 reg, u32 bits, u32 mask) -{ - if (!atomic_read(&priv->restrict_refcnt)) - IWL_ERROR("Nic access not held from %s line %d\n", f, line); - _iwl_set_bits_mask_prph(priv, reg, bits, mask); -} -#define iwl_set_bits_mask_prph(priv, reg, bits, mask) \ - __iwl_set_bits_mask_prph(__func__, __LINE__, priv, reg, bits, mask) -#else -#define iwl_set_bits_mask_prph _iwl_set_bits_mask_prph -#endif +u32 iwl_read_direct32(struct iwl_trans *trans, u32 reg); +void iwl_write_direct32(struct iwl_trans *trans, u32 reg, u32 value); -static inline void iwl_clear_bits_prph(struct iwl_priv - *priv, u32 reg, u32 mask) -{ - u32 val = _iwl_read_prph(priv, reg); - _iwl_write_prph(priv, reg, (val & ~mask)); -} -static inline u32 iwl_read_targ_mem(struct iwl_priv *priv, u32 addr) -{ - iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR, addr); - return iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT); -} +u32 __iwl_read_prph(struct iwl_trans *trans, u32 ofs); +u32 iwl_read_prph(struct iwl_trans *trans, u32 ofs); +void __iwl_write_prph(struct iwl_trans *trans, u32 ofs, u32 val); +void iwl_write_prph(struct iwl_trans *trans, u32 ofs, u32 val); +int iwl_poll_prph_bit(struct iwl_trans *trans, u32 addr, + u32 bits, u32 mask, int timeout); +void iwl_set_bits_prph(struct iwl_trans *trans, u32 ofs, u32 mask); +void iwl_set_bits_mask_prph(struct iwl_trans *trans, u32 ofs, + u32 bits, u32 mask); +void iwl_clear_bits_prph(struct iwl_trans *trans, u32 ofs, u32 mask); +void iwl_force_nmi(struct iwl_trans *trans); -static inline void iwl_write_targ_mem(struct iwl_priv *priv, u32 addr, u32 val) -{ - iwl_write_direct32(priv, HBUS_TARG_MEM_WADDR, addr); - iwl_write_direct32(priv, HBUS_TARG_MEM_WDAT, val); -} +/* Error handling */ +int iwl_dump_fh(struct iwl_trans *trans, char **buf); -static inline void iwl_write_targ_mem_buf(struct iwl_priv *priv, u32 addr, - u32 len, u32 *values) -{ - iwl_write_direct32(priv, HBUS_TARG_MEM_WADDR, addr); - for (; 0 < len; len -= sizeof(u32), values++) - iwl_write_direct32(priv, HBUS_TARG_MEM_WDAT, *values); -} #endif |