diff options
Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl-io.h')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-io.h | 253 |
1 files changed, 159 insertions, 94 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-io.h b/drivers/net/wireless/iwlwifi/iwl-io.h index 083ea1ffbe87..d30cb0275d19 100644 --- a/drivers/net/wireless/iwlwifi/iwl-io.h +++ b/drivers/net/wireless/iwlwifi/iwl-io.h @@ -131,9 +131,23 @@ static inline void __iwl_set_bit(const char *f, u32 l, IWL_DEBUG_IO(priv, "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) +static inline void iwl_set_bit(struct iwl_priv *p, u32 r, u32 m) +{ + unsigned long reg_flags; + + spin_lock_irqsave(&p->reg_lock, reg_flags); + __iwl_set_bit(__FILE__, __LINE__, p, r, m); + spin_unlock_irqrestore(&p->reg_lock, reg_flags); +} #else -#define iwl_set_bit(p, r, m) _iwl_set_bit(p, r, m) +static inline void iwl_set_bit(struct iwl_priv *p, u32 r, u32 m) +{ + unsigned long reg_flags; + + spin_lock_irqsave(&p->reg_lock, reg_flags); + _iwl_set_bit(p, r, m); + spin_unlock_irqrestore(&p->reg_lock, reg_flags); +} #endif static inline void _iwl_clear_bit(struct iwl_priv *priv, u32 reg, u32 mask) @@ -148,19 +162,30 @@ static inline void __iwl_clear_bit(const char *f, u32 l, IWL_DEBUG_IO(priv, "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) +static inline void iwl_clear_bit(struct iwl_priv *p, u32 r, u32 m) +{ + unsigned long reg_flags; + + spin_lock_irqsave(&p->reg_lock, reg_flags); + __iwl_clear_bit(__FILE__, __LINE__, p, r, m); + spin_unlock_irqrestore(&p->reg_lock, reg_flags); +} #else -#define iwl_clear_bit(p, r, m) _iwl_clear_bit(p, r, m) +static inline void iwl_clear_bit(struct iwl_priv *p, u32 r, u32 m) +{ + unsigned long reg_flags; + + spin_lock_irqsave(&p->reg_lock, reg_flags); + _iwl_clear_bit(p, r, m); + spin_unlock_irqrestore(&p->reg_lock, reg_flags); +} #endif static inline int _iwl_grab_nic_access(struct iwl_priv *priv) { int ret; u32 val; -#ifdef CONFIG_IWLWIFI_DEBUG - if (atomic_read(&priv->restrict_refcnt)) - return 0; -#endif + /* 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, @@ -170,12 +195,10 @@ static inline int _iwl_grab_nic_access(struct iwl_priv *priv) if (ret < 0) { val = _iwl_read32(priv, CSR_GP_CNTRL); IWL_ERR(priv, "MAC is in deep sleep!. CSR_GP_CNTRL = 0x%08X\n", val); + _iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_FORCE_NMI); return -EIO; } -#ifdef CONFIG_IWLWIFI_DEBUG - atomic_inc(&priv->restrict_refcnt); -#endif return 0; } @@ -183,9 +206,6 @@ static inline int _iwl_grab_nic_access(struct iwl_priv *priv) static inline int __iwl_grab_nic_access(const char *f, u32 l, struct iwl_priv *priv) { - if (atomic_read(&priv->restrict_refcnt)) - IWL_ERR(priv, "Grabbing access while already held %s %d.\n", f, l); - IWL_DEBUG_IO(priv, "grabbing nic access - %s %d\n", f, l); return _iwl_grab_nic_access(priv); } @@ -198,18 +218,13 @@ static inline int __iwl_grab_nic_access(const char *f, u32 l, 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); + _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_ERR(priv, "Release unheld nic access at line %s %d.\n", f, l); IWL_DEBUG_IO(priv, "releasing nic access - %s %d\n", f, l); _iwl_release_nic_access(priv); @@ -230,16 +245,37 @@ 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_ERR(priv, "Nic access not held from %s %d\n", f, l); IWL_DEBUG_IO(priv, "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) +static inline u32 iwl_read_direct32(struct iwl_priv *priv, u32 reg) +{ + u32 value; + unsigned long reg_flags; + + spin_lock_irqsave(&priv->reg_lock, reg_flags); + iwl_grab_nic_access(priv); + value = __iwl_read_direct32(__FILE__, __LINE__, priv, reg); + iwl_release_nic_access(priv); + spin_unlock_irqrestore(&priv->reg_lock, reg_flags); + return value; +} + #else -#define iwl_read_direct32 _iwl_read_direct32 +static inline u32 iwl_read_direct32(struct iwl_priv *priv, u32 reg) +{ + u32 value; + unsigned long reg_flags; + + spin_lock_irqsave(&priv->reg_lock, reg_flags); + iwl_grab_nic_access(priv); + value = _iwl_read_direct32(priv, reg); + iwl_release_nic_access(priv); + spin_unlock_irqrestore(&priv->reg_lock, reg_flags); + return value; + +} #endif static inline void _iwl_write_direct32(struct iwl_priv *priv, @@ -247,19 +283,17 @@ static inline void _iwl_write_direct32(struct iwl_priv *priv, { _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) +static inline void iwl_write_direct32(struct iwl_priv *priv, u32 reg, u32 value) { - if (!atomic_read(&priv->restrict_refcnt)) - IWL_ERR(priv, "Nic access not held from %s line %d\n", f, line); - _iwl_write_direct32(priv, reg, value); + unsigned long reg_flags; + + spin_lock_irqsave(&priv->reg_lock, reg_flags); + if (!iwl_grab_nic_access(priv)) { + _iwl_write_direct32(priv, reg, value); + iwl_release_nic_access(priv); + } + spin_unlock_irqrestore(&priv->reg_lock, reg_flags); } -#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) @@ -268,14 +302,23 @@ static inline void iwl_write_reg_buf(struct iwl_priv *priv, if ((priv != NULL) && (values != NULL)) { for (; 0 < len; len -= count, reg += count, values++) - _iwl_write_direct32(priv, reg, *values); + iwl_write_direct32(priv, reg, *values); } } static inline int _iwl_poll_direct_bit(struct iwl_priv *priv, u32 addr, u32 mask, int timeout) { - return _iwl_poll_bit(priv, addr, mask, mask, timeout); + int t = 0; + + do { + if ((iwl_read_direct32(priv, addr) & mask) == mask) + return t; + udelay(IWL_POLL_INTERVAL); + t += IWL_POLL_INTERVAL; + } while (t < timeout); + + return -ETIMEDOUT; } #ifdef CONFIG_IWLWIFI_DEBUG @@ -305,20 +348,18 @@ static inline u32 _iwl_read_prph(struct iwl_priv *priv, u32 reg) rmb(); 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) +static inline u32 iwl_read_prph(struct iwl_priv *priv, u32 reg) { - if (!atomic_read(&priv->restrict_refcnt)) - IWL_ERR(priv, "Nic access not held from %s line %d\n", f, line); - return _iwl_read_prph(priv, reg); -} + unsigned long reg_flags; + u32 val; -#define iwl_read_prph(priv, reg) \ - __iwl_read_prph(__func__, __LINE__, priv, reg) -#else -#define iwl_read_prph _iwl_read_prph -#endif + spin_lock_irqsave(&priv->reg_lock, reg_flags); + iwl_grab_nic_access(priv); + val = _iwl_read_prph(priv, reg); + iwl_release_nic_access(priv); + spin_unlock_irqrestore(&priv->reg_lock, reg_flags); + return val; +} static inline void _iwl_write_prph(struct iwl_priv *priv, u32 addr, u32 val) @@ -328,83 +369,107 @@ static inline void _iwl_write_prph(struct iwl_priv *priv, wmb(); _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_write_prph(struct iwl_priv *priv, u32 addr, u32 val) { - if (!atomic_read(&priv->restrict_refcnt)) - IWL_ERR(priv, "Nic access not held from %s line %d\n", f, line); - _iwl_write_prph(priv, addr, val); -} + unsigned long reg_flags; -#define iwl_write_prph(priv, addr, val) \ - __iwl_write_prph(__func__, __LINE__, priv, addr, val); -#else -#define iwl_write_prph _iwl_write_prph -#endif + spin_lock_irqsave(&priv->reg_lock, reg_flags); + if (!iwl_grab_nic_access(priv)) { + _iwl_write_prph(priv, addr, val); + iwl_release_nic_access(priv); + } + spin_unlock_irqrestore(&priv->reg_lock, reg_flags); +} #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_set_bits_prph(struct iwl_priv *priv, u32 reg, u32 mask) { - if (!atomic_read(&priv->restrict_refcnt)) - IWL_ERR(priv, "Nic access not held from %s line %d\n", f, line); + unsigned long reg_flags; + spin_lock_irqsave(&priv->reg_lock, reg_flags); + iwl_grab_nic_access(priv); _iwl_set_bits_prph(priv, reg, mask); + iwl_release_nic_access(priv); + spin_unlock_irqrestore(&priv->reg_lock, reg_flags); } -#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)) -#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) +static inline void iwl_set_bits_mask_prph(struct iwl_priv *priv, u32 reg, + u32 bits, u32 mask) { - if (!atomic_read(&priv->restrict_refcnt)) - IWL_ERR(priv, "Nic access not held from %s line %d\n", f, line); + unsigned long reg_flags; + + spin_lock_irqsave(&priv->reg_lock, reg_flags); + iwl_grab_nic_access(priv); _iwl_set_bits_mask_prph(priv, reg, bits, mask); + iwl_release_nic_access(priv); + spin_unlock_irqrestore(&priv->reg_lock, reg_flags); } -#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 static inline void iwl_clear_bits_prph(struct iwl_priv *priv, u32 reg, u32 mask) { - u32 val = _iwl_read_prph(priv, reg); + unsigned long reg_flags; + u32 val; + + spin_lock_irqsave(&priv->reg_lock, reg_flags); + iwl_grab_nic_access(priv); + val = _iwl_read_prph(priv, reg); _iwl_write_prph(priv, reg, (val & ~mask)); + iwl_release_nic_access(priv); + spin_unlock_irqrestore(&priv->reg_lock, reg_flags); } static inline u32 iwl_read_targ_mem(struct iwl_priv *priv, u32 addr) { - iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR, addr); + unsigned long reg_flags; + u32 value; + + spin_lock_irqsave(&priv->reg_lock, reg_flags); + iwl_grab_nic_access(priv); + + _iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR, addr); rmb(); - return iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT); + value = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT); + + iwl_release_nic_access(priv); + spin_unlock_irqrestore(&priv->reg_lock, reg_flags); + return value; } static inline void iwl_write_targ_mem(struct iwl_priv *priv, u32 addr, u32 val) { - iwl_write_direct32(priv, HBUS_TARG_MEM_WADDR, addr); - wmb(); - iwl_write_direct32(priv, HBUS_TARG_MEM_WDAT, val); + unsigned long reg_flags; + + spin_lock_irqsave(&priv->reg_lock, reg_flags); + if (!iwl_grab_nic_access(priv)) { + _iwl_write_direct32(priv, HBUS_TARG_MEM_WADDR, addr); + wmb(); + _iwl_write_direct32(priv, HBUS_TARG_MEM_WDAT, val); + iwl_release_nic_access(priv); + } + spin_unlock_irqrestore(&priv->reg_lock, reg_flags); } 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); - wmb(); - for (; 0 < len; len -= sizeof(u32), values++) - iwl_write_direct32(priv, HBUS_TARG_MEM_WDAT, *values); + unsigned long reg_flags; + + spin_lock_irqsave(&priv->reg_lock, reg_flags); + if (!iwl_grab_nic_access(priv)) { + _iwl_write_direct32(priv, HBUS_TARG_MEM_WADDR, addr); + wmb(); + for (; 0 < len; len -= sizeof(u32), values++) + _iwl_write_direct32(priv, HBUS_TARG_MEM_WDAT, *values); + + iwl_release_nic_access(priv); + } + spin_unlock_irqrestore(&priv->reg_lock, reg_flags); } #endif |