diff options
| -rw-r--r-- | drivers/net/wireless/iwlwifi/Makefile | 2 | ||||
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-agn-eeprom.c | 2 | ||||
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-agn-ucode.c | 6 | ||||
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-agn.c | 18 | ||||
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-debug.h | 2 | ||||
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-eeprom.c | 36 | ||||
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-io.c | 274 | ||||
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-io.h | 489 |
8 files changed, 326 insertions, 503 deletions
diff --git a/drivers/net/wireless/iwlwifi/Makefile b/drivers/net/wireless/iwlwifi/Makefile index 9d6ee836426c..3652931753e0 100644 --- a/drivers/net/wireless/iwlwifi/Makefile +++ b/drivers/net/wireless/iwlwifi/Makefile @@ -2,7 +2,7 @@ obj-$(CONFIG_IWLAGN) += iwlagn.o iwlagn-objs := iwl-agn.o iwl-agn-rs.o iwl-agn-led.o iwlagn-objs += iwl-agn-ucode.o iwl-agn-tx.o -iwlagn-objs += iwl-agn-lib.o iwl-agn-calib.o +iwlagn-objs += iwl-agn-lib.o iwl-agn-calib.o iwl-io.o iwlagn-objs += iwl-agn-tt.o iwl-agn-sta.o iwl-agn-eeprom.o iwlagn-objs += iwl-core.o iwl-eeprom.o iwl-hcmd.o iwl-power.o diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-eeprom.c b/drivers/net/wireless/iwlwifi/iwl-agn-eeprom.c index c6dd9b755a05..3bcaa10f9929 100644 --- a/drivers/net/wireless/iwlwifi/iwl-agn-eeprom.c +++ b/drivers/net/wireless/iwlwifi/iwl-agn-eeprom.c @@ -103,7 +103,7 @@ int iwlcore_eeprom_acquire_semaphore(struct iwl_priv *priv) CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM, EEPROM_SEM_TIMEOUT); if (ret >= 0) { - IWL_DEBUG_IO(priv, + IWL_DEBUG_EEPROM(priv, "Acquired semaphore after %d tries.\n", count+1); return ret; diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-ucode.c b/drivers/net/wireless/iwlwifi/iwl-agn-ucode.c index 5187a2c20644..01a6d2fc795c 100644 --- a/drivers/net/wireless/iwlwifi/iwl-agn-ucode.c +++ b/drivers/net/wireless/iwlwifi/iwl-agn-ucode.c @@ -561,7 +561,7 @@ static int iwlcore_verify_inst_sparse(struct iwl_priv *priv, * if IWL_DL_IO is set */ iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR, i + IWLAGN_RTC_INST_LOWER_BOUND); - val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT); + val = iwl_read32(priv, HBUS_TARG_MEM_RDAT); if (val != le32_to_cpu(*image)) return -EIO; } @@ -587,9 +587,7 @@ static void iwl_print_mismatch_inst(struct iwl_priv *priv, offs < len && errors < 20; offs += sizeof(u32), image++) { /* read data comes through single port, auto-incr addr */ - /* NOTE: Use the debugless read so we don't flood kernel log - * if IWL_DL_IO is set */ - val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT); + val = iwl_read32(priv, HBUS_TARG_MEM_RDAT); if (val != le32_to_cpu(*image)) { IWL_ERR(priv, "uCode INST section at " "offset 0x%x, is 0x%x, s/b 0x%x\n", diff --git a/drivers/net/wireless/iwlwifi/iwl-agn.c b/drivers/net/wireless/iwlwifi/iwl-agn.c index fd3aed8ed960..60bfde75ce87 100644 --- a/drivers/net/wireless/iwlwifi/iwl-agn.c +++ b/drivers/net/wireless/iwlwifi/iwl-agn.c @@ -558,7 +558,7 @@ static void iwl_print_cont_event_trace(struct iwl_priv *priv, u32 base, } /* Set starting address; reads will auto-increment */ - _iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR, ptr); + iwl_write32(priv, HBUS_TARG_MEM_RADDR, ptr); rmb(); /* @@ -566,13 +566,13 @@ static void iwl_print_cont_event_trace(struct iwl_priv *priv, u32 base, * place event id # at far right for easier visual parsing. */ for (i = 0; i < num_events; i++) { - ev = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT); - time = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT); + ev = iwl_read32(priv, HBUS_TARG_MEM_RDAT); + time = iwl_read32(priv, HBUS_TARG_MEM_RDAT); if (mode == 0) { trace_iwlwifi_dev_ucode_cont_event(priv, 0, time, ev); } else { - data = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT); + data = iwl_read32(priv, HBUS_TARG_MEM_RDAT); trace_iwlwifi_dev_ucode_cont_event(priv, time, data, ev); } @@ -1963,14 +1963,14 @@ static int iwl_print_event_log(struct iwl_priv *priv, u32 start_idx, iwl_grab_nic_access(priv); /* Set starting address; reads will auto-increment */ - _iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR, ptr); + iwl_write32(priv, HBUS_TARG_MEM_RADDR, ptr); rmb(); /* "time" is actually "data" for mode 0 (no timestamp). * place event id # at far right for easier visual parsing. */ for (i = 0; i < num_events; i++) { - ev = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT); - time = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT); + ev = iwl_read32(priv, HBUS_TARG_MEM_RDAT); + time = iwl_read32(priv, HBUS_TARG_MEM_RDAT); if (mode == 0) { /* data, ev */ if (bufsz) { @@ -1984,7 +1984,7 @@ static int iwl_print_event_log(struct iwl_priv *priv, u32 start_idx, time, ev); } } else { - data = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT); + data = iwl_read32(priv, HBUS_TARG_MEM_RDAT); if (bufsz) { pos += scnprintf(*buf + pos, bufsz - pos, "EVT_LOGT:%010u:0x%08x:%04u\n", @@ -3689,7 +3689,7 @@ static u32 iwl_hw_detect(struct iwl_priv *priv) pci_read_config_byte(priv->pci_dev, PCI_REVISION_ID, &rev_id); IWL_DEBUG_INFO(priv, "HW Revision ID = 0x%X\n", rev_id); - return _iwl_read32(priv, CSR_HW_REV); + return iwl_read32(priv, CSR_HW_REV); } static int iwl_set_hw_params(struct iwl_priv *priv) diff --git a/drivers/net/wireless/iwlwifi/iwl-debug.h b/drivers/net/wireless/iwlwifi/iwl-debug.h index 8489431ceb8b..2824ccbcc1fc 100644 --- a/drivers/net/wireless/iwlwifi/iwl-debug.h +++ b/drivers/net/wireless/iwlwifi/iwl-debug.h @@ -146,7 +146,6 @@ static inline void iwl_dbgfs_unregister(struct iwl_priv *priv) #define IWL_DL_RX (1 << 24) #define IWL_DL_ISR (1 << 25) #define IWL_DL_HT (1 << 26) -#define IWL_DL_IO (1 << 27) /* 0xF0000000 - 0x10000000 */ #define IWL_DL_11H (1 << 28) #define IWL_DL_STATS (1 << 29) @@ -174,7 +173,6 @@ static inline void iwl_dbgfs_unregister(struct iwl_priv *priv) IWL_DEBUG_LIMIT(p, IWL_DL_DROP, f, ## a) #define IWL_DEBUG_AP(p, f, a...) IWL_DEBUG(p, IWL_DL_AP, f, ## a) #define IWL_DEBUG_TXPOWER(p, f, a...) IWL_DEBUG(p, IWL_DL_TXPOWER, f, ## a) -#define IWL_DEBUG_IO(p, f, a...) IWL_DEBUG(p, IWL_DL_IO, f, ## a) #define IWL_DEBUG_RATE(p, f, a...) IWL_DEBUG(p, IWL_DL_RATE, f, ## a) #define IWL_DEBUG_RATE_LIMIT(p, f, a...) \ IWL_DEBUG_LIMIT(p, IWL_DL_RATE, f, ## a) diff --git a/drivers/net/wireless/iwlwifi/iwl-eeprom.c b/drivers/net/wireless/iwlwifi/iwl-eeprom.c index 4f8c13e9850b..859b94a12297 100644 --- a/drivers/net/wireless/iwlwifi/iwl-eeprom.c +++ b/drivers/net/wireless/iwlwifi/iwl-eeprom.c @@ -226,15 +226,15 @@ static int iwl_init_otp_access(struct iwl_priv *priv) int ret; /* Enable 40MHz radio clock */ - _iwl_write32(priv, CSR_GP_CNTRL, - _iwl_read32(priv, CSR_GP_CNTRL) | - CSR_GP_CNTRL_REG_FLAG_INIT_DONE); + iwl_write32(priv, CSR_GP_CNTRL, + iwl_read32(priv, CSR_GP_CNTRL) | + CSR_GP_CNTRL_REG_FLAG_INIT_DONE); /* wait for clock to be ready */ ret = iwl_poll_bit(priv, CSR_GP_CNTRL, - CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, - CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, - 25000); + CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, + CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, + 25000); if (ret < 0) IWL_ERR(priv, "Time out access OTP\n"); else { @@ -261,17 +261,17 @@ static int iwl_read_otp_word(struct iwl_priv *priv, u16 addr, __le16 *eeprom_dat u32 r; u32 otpgp; - _iwl_write32(priv, CSR_EEPROM_REG, - CSR_EEPROM_REG_MSK_ADDR & (addr << 1)); + iwl_write32(priv, CSR_EEPROM_REG, + CSR_EEPROM_REG_MSK_ADDR & (addr << 1)); ret = iwl_poll_bit(priv, CSR_EEPROM_REG, - CSR_EEPROM_REG_READ_VALID_MSK, - CSR_EEPROM_REG_READ_VALID_MSK, - IWL_EEPROM_ACCESS_TIMEOUT); + CSR_EEPROM_REG_READ_VALID_MSK, + CSR_EEPROM_REG_READ_VALID_MSK, + IWL_EEPROM_ACCESS_TIMEOUT); if (ret < 0) { IWL_ERR(priv, "Time out reading OTP[%d]\n", addr); return ret; } - r = _iwl_read_direct32(priv, CSR_EEPROM_REG); + r = iwl_read32(priv, CSR_EEPROM_REG); /* check for ECC errors: */ otpgp = iwl_read32(priv, CSR_OTP_GP_REG); if (otpgp & CSR_OTP_GP_REG_ECC_UNCORR_STATUS_MSK) { @@ -442,9 +442,9 @@ int iwl_eeprom_init(struct iwl_priv *priv, u32 hw_rev) ret = -ENOENT; goto done; } - _iwl_write32(priv, CSR_EEPROM_GP, - iwl_read32(priv, CSR_EEPROM_GP) & - ~CSR_EEPROM_GP_IF_OWNER_MSK); + iwl_write32(priv, CSR_EEPROM_GP, + iwl_read32(priv, CSR_EEPROM_GP) & + ~CSR_EEPROM_GP_IF_OWNER_MSK); iwl_set_bit(priv, CSR_OTP_GP_REG, CSR_OTP_GP_REG_ECC_CORR_STATUS_MSK | @@ -471,8 +471,8 @@ int iwl_eeprom_init(struct iwl_priv *priv, u32 hw_rev) for (addr = 0; addr < sz; addr += sizeof(u16)) { u32 r; - _iwl_write32(priv, CSR_EEPROM_REG, - CSR_EEPROM_REG_MSK_ADDR & (addr << 1)); + iwl_write32(priv, CSR_EEPROM_REG, + CSR_EEPROM_REG_MSK_ADDR & (addr << 1)); ret = iwl_poll_bit(priv, CSR_EEPROM_REG, CSR_EEPROM_REG_READ_VALID_MSK, @@ -482,7 +482,7 @@ int iwl_eeprom_init(struct iwl_priv *priv, u32 hw_rev) IWL_ERR(priv, "Time out reading EEPROM[%d]\n", addr); goto done; } - r = _iwl_read_direct32(priv, CSR_EEPROM_REG); + r = iwl_read32(priv, CSR_EEPROM_REG); e[addr / 2] = cpu_to_le16(r >> 16); } } diff --git a/drivers/net/wireless/iwlwifi/iwl-io.c b/drivers/net/wireless/iwlwifi/iwl-io.c new file mode 100644 index 000000000000..51337416e4ca --- /dev/null +++ b/drivers/net/wireless/iwlwifi/iwl-io.c @@ -0,0 +1,274 @@ +/****************************************************************************** + * + * Copyright(c) 2003 - 2011 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: + * Intel Linux Wireless <ilw@linux.intel.com> + * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 + * + *****************************************************************************/ + +#include "iwl-io.h" + +#define IWL_POLL_INTERVAL 10 /* microseconds */ + +static inline void __iwl_set_bit(struct iwl_priv *priv, u32 reg, u32 mask) +{ + iwl_write32(priv, reg, iwl_read32(priv, reg) | mask); +} + +static inline void __iwl_clear_bit(struct iwl_priv *priv, u32 reg, u32 mask) +{ + iwl_write32(priv, reg, iwl_read32(priv, reg) & ~mask); +} + +void iwl_set_bit(struct iwl_priv *priv, u32 reg, u32 mask) +{ + unsigned long flags; + + spin_lock_irqsave(&priv->reg_lock, flags); + __iwl_set_bit(priv, reg, mask); + spin_unlock_irqrestore(&priv->reg_lock, flags); +} + +void iwl_clear_bit(struct iwl_priv *priv, u32 reg, u32 mask) +{ + unsigned long flags; + + spin_lock_irqsave(&priv->reg_lock, flags); + __iwl_clear_bit(priv, reg, mask); + spin_unlock_irqrestore(&priv->reg_lock, flags); +} + +int iwl_poll_bit(struct iwl_priv *priv, u32 addr, + u32 bits, u32 mask, int timeout) +{ + int t = 0; + + do { + if ((iwl_read32(priv, addr) & mask) == (bits & mask)) + return t; + udelay(IWL_POLL_INTERVAL); + t += IWL_POLL_INTERVAL; + } while (t < timeout); + + return -ETIMEDOUT; +} + +int iwl_grab_nic_access(struct iwl_priv *priv) +{ + int ret; + u32 val; + + lockdep_assert_held(&priv->reg_lock); + + /* this bit wakes up the NIC */ + __iwl_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ); + + /* + * These bits say the device is running, and should keep running for + * at least a short while (at least as long as MAC_ACCESS_REQ stays 1), + * but they do not indicate that embedded SRAM is restored yet; + * 3945 and 4965 have volatile SRAM, and must save/restore contents + * to/from host DRAM when sleeping/waking for power-saving. + * Each direction takes approximately 1/4 millisecond; with this + * overhead, it's a good idea to grab and hold MAC_ACCESS_REQUEST if a + * series of register accesses are expected (e.g. reading Event Log), + * to keep device from sleeping. + * + * CSR_UCODE_DRV_GP1 register bit MAC_SLEEP == 0 indicates that + * SRAM is okay/restored. We don't check that here because this call + * is just for hardware register access; but GP1 MAC_SLEEP check is a + * good idea before accessing 3945/4965 SRAM (e.g. reading Event Log). + * + * 5000 series and later (including 1000 series) have non-volatile SRAM, + * and do not save/restore SRAM when power cycling. + */ + 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), 15000); + 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; + } + + return 0; +} + +void iwl_release_nic_access(struct iwl_priv *priv) +{ + lockdep_assert_held(&priv->reg_lock); + __iwl_clear_bit(priv, CSR_GP_CNTRL, + CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ); +} + +u32 iwl_read_direct32(struct iwl_priv *priv, u32 reg) +{ + u32 value; + unsigned long flags; + + spin_lock_irqsave(&priv->reg_lock, flags); + iwl_grab_nic_access(priv); + value = iwl_read32(priv, reg); + iwl_release_nic_access(priv); + spin_unlock_irqrestore(&priv->reg_lock, flags); + + return value; +} + +void iwl_write_direct32(struct iwl_priv *priv, u32 reg, u32 value) +{ + unsigned long flags; + + spin_lock_irqsave(&priv->reg_lock, flags); + if (!iwl_grab_nic_access(priv)) { + iwl_write32(priv, reg, value); + iwl_release_nic_access(priv); + } + spin_unlock_irqrestore(&priv->reg_lock, flags); +} + +int iwl_poll_direct_bit(struct iwl_priv *priv, u32 addr, u32 mask, + int 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; +} + +static inline u32 __iwl_read_prph(struct iwl_priv *priv, u32 reg) +{ + iwl_write32(priv, HBUS_TARG_PRPH_RADDR, reg | (3 << 24)); + rmb(); + return iwl_read32(priv, HBUS_TARG_PRPH_RDAT); +} + +static inline void __iwl_write_prph(struct iwl_priv *priv, u32 addr, u32 val) +{ + iwl_write32(priv, HBUS_TARG_PRPH_WADDR, + ((addr & 0x0000FFFF) | (3 << 24))); + wmb(); + iwl_write32(priv, HBUS_TARG_PRPH_WDAT, val); +} + +u32 iwl_read_prph(struct iwl_priv *priv, u32 reg) +{ + unsigned long flags; + u32 val; + + spin_lock_irqsave(&priv->reg_lock, flags); + iwl_grab_nic_access(priv); + val = __iwl_read_prph(priv, reg); + iwl_release_nic_access(priv); + spin_unlock_irqrestore(&priv->reg_lock, flags); + return val; +} + +void iwl_write_prph(struct iwl_priv *priv, u32 addr, u32 val) +{ + unsigned long flags; + + spin_lock_irqsave(&priv->reg_lock, flags); + if (!iwl_grab_nic_access(priv)) { + __iwl_write_prph(priv, addr, val); + iwl_release_nic_access(priv); + } + spin_unlock_irqrestore(&priv->reg_lock, flags); +} + +void iwl_set_bits_prph(struct iwl_priv *priv, u32 reg, u32 mask) +{ + unsigned long flags; + + spin_lock_irqsave(&priv->reg_lock, flags); + iwl_grab_nic_access(priv); + __iwl_write_prph(priv, reg, __iwl_read_prph(priv, reg) | mask); + iwl_release_nic_access(priv); + spin_unlock_irqrestore(&priv->reg_lock, flags); +} + +void iwl_set_bits_mask_prph(struct iwl_priv *priv, u32 reg, + u32 bits, u32 mask) +{ + unsigned long flags; + + spin_lock_irqsave(&priv->reg_lock, flags); + iwl_grab_nic_access(priv); + __iwl_write_prph(priv, reg, + (__iwl_read_prph(priv, reg) & mask) | bits); + iwl_release_nic_access(priv); + spin_unlock_irqrestore(&priv->reg_lock, flags); +} + +void iwl_clear_bits_prph(struct iwl_priv *priv, u32 reg, u32 mask) +{ + unsigned long flags; + u32 val; + + spin_lock_irqsave(&priv->reg_lock, 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, flags); +} + +u32 iwl_read_targ_mem(struct iwl_priv *priv, u32 addr) +{ + unsigned long flags; + u32 value; + + spin_lock_irqsave(&priv->reg_lock, flags); + iwl_grab_nic_access(priv); + + iwl_write32(priv, HBUS_TARG_MEM_RADDR, addr); + rmb(); + value = iwl_read32(priv, HBUS_TARG_MEM_RDAT); + + iwl_release_nic_access(priv); + spin_unlock_irqrestore(&priv->reg_lock, flags); + return value; +} + +void iwl_write_targ_mem(struct iwl_priv *priv, u32 addr, u32 val) +{ + unsigned long flags; + + spin_lock_irqsave(&priv->reg_lock, flags); + if (!iwl_grab_nic_access(priv)) { + iwl_write32(priv, HBUS_TARG_MEM_WADDR, addr); + wmb(); + iwl_write32(priv, HBUS_TARG_MEM_WDAT, val); + iwl_release_nic_access(priv); + } + spin_unlock_irqrestore(&priv->reg_lock, flags); +} diff --git a/drivers/net/wireless/iwlwifi/iwl-io.h b/drivers/net/wireless/iwlwifi/iwl-io.h index 3ddb2fbe12f9..ab632baf49d5 100644 --- a/drivers/net/wireless/iwlwifi/iwl-io.h +++ b/drivers/net/wireless/iwlwifi/iwl-io.h @@ -35,494 +35,47 @@ #include "iwl-debug.h" #include "iwl-devtrace.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 misconfiguration 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. - * - */ - -static inline void _iwl_write8(struct iwl_priv *priv, u32 ofs, u8 val) +static inline void iwl_write8(struct iwl_priv *priv, u32 ofs, u8 val) { trace_iwlwifi_dev_iowrite8(priv, ofs, val); iowrite8(val, priv->hw_base + ofs); } -#ifdef CONFIG_IWLWIFI_DEBUG -static inline void __iwl_write8(const char *f, u32 l, struct iwl_priv *priv, - u32 ofs, u8 val) -{ - IWL_DEBUG_IO(priv, "write8(0x%08X, 0x%02X) - %s %d\n", ofs, val, f, l); - _iwl_write8(priv, ofs, val); -} -#define iwl_write8(priv, ofs, val) \ - __iwl_write8(__FILE__, __LINE__, priv, ofs, val) -#else -#define iwl_write8(priv, ofs, val) _iwl_write8(priv, ofs, val) -#endif - - -static inline void _iwl_write32(struct iwl_priv *priv, u32 ofs, u32 val) +static inline void iwl_write32(struct iwl_priv *priv, u32 ofs, u32 val) { trace_iwlwifi_dev_iowrite32(priv, ofs, val); iowrite32(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(priv, "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 - -static inline u32 _iwl_read32(struct iwl_priv *priv, u32 ofs) +static inline u32 iwl_read32(struct iwl_priv *priv, u32 ofs) { u32 val = ioread32(priv->hw_base + ofs); trace_iwlwifi_dev_ioread32(priv, ofs, val); return val; } -#ifdef CONFIG_IWLWIFI_DEBUG -static inline u32 __iwl_read32(char *f, u32 l, struct iwl_priv *priv, u32 ofs) -{ - IWL_DEBUG_IO(priv, "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 - -#define IWL_POLL_INTERVAL 10 /* microseconds */ -static inline int _iwl_poll_bit(struct iwl_priv *priv, u32 addr, - u32 bits, u32 mask, int timeout) -{ - int t = 0; - - do { - if ((_iwl_read32(priv, addr) & mask) == (bits & mask)) - return t; - udelay(IWL_POLL_INTERVAL); - t += IWL_POLL_INTERVAL; - } while (t < 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(priv, "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(priv, "set_bit(0x%08X, 0x%08X) = 0x%08X\n", reg, mask, val); - _iwl_write32(priv, reg, val); -} -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 -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) -{ - _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(priv, "clear_bit(0x%08X, 0x%08X) = 0x%08X\n", reg, mask, val); - _iwl_write32(priv, reg, val); -} -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 -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; - - /* this bit wakes up the NIC */ - _iwl_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ); - - /* - * These bits say the device is running, and should keep running for - * at least a short while (at least as long as MAC_ACCESS_REQ stays 1), - * but they do not indicate that embedded SRAM is restored yet; - * 3945 and 4965 have volatile SRAM, and must save/restore contents - * to/from host DRAM when sleeping/waking for power-saving. - * Each direction takes approximately 1/4 millisecond; with this - * overhead, it's a good idea to grab and hold MAC_ACCESS_REQUEST if a - * series of register accesses are expected (e.g. reading Event Log), - * to keep device from sleeping. - * - * CSR_UCODE_DRV_GP1 register bit MAC_SLEEP == 0 indicates that - * SRAM is okay/restored. We don't check that here because this call - * is just for hardware register access; but GP1 MAC_SLEEP check is a - * good idea before accessing 3945/4965 SRAM (e.g. reading Event Log). - * - * 5000 series and later (including 1000 series) have non-volatile SRAM, - * and do not save/restore SRAM when power cycling. - */ - 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), 15000); - 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; - } - - return 0; -} - -#ifdef CONFIG_IWLWIFI_DEBUG -static inline int __iwl_grab_nic_access(const char *f, u32 l, - struct iwl_priv *priv) -{ - IWL_DEBUG_IO(priv, "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) -{ - _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) -{ - - IWL_DEBUG_IO(priv, "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); - IWL_DEBUG_IO(priv, "read_direct32(0x%4X) = 0x%08x - %s %d\n", reg, value, - f, l); - return value; -} -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 -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, - u32 reg, u32 value) -{ - _iwl_write32(priv, reg, value); -} -static inline void iwl_write_direct32(struct iwl_priv *priv, u32 reg, u32 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); -} - -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) -{ - 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 -static inline int __iwl_poll_direct_bit(const char *f, u32 l, - struct iwl_priv *priv, - u32 addr, u32 mask, int timeout) -{ - int ret = _iwl_poll_direct_bit(priv, addr, mask, timeout); - - if (unlikely(ret == -ETIMEDOUT)) - IWL_DEBUG_IO(priv, "poll_direct_bit(0x%08X, 0x%08X) - " - "timedout - %s %d\n", addr, mask, f, l); - else - IWL_DEBUG_IO(priv, "poll_direct_bit(0x%08X, 0x%08X) = 0x%08X " - "- %s %d\n", addr, mask, ret, f, l); - return ret; -} -#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) -{ - _iwl_write_direct32(priv, HBUS_TARG_PRPH_RADDR, reg | (3 << 24)); - rmb(); - return _iwl_read_direct32(priv, HBUS_TARG_PRPH_RDAT); -} -static inline u32 iwl_read_prph(struct iwl_priv *priv, u32 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_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) -{ - _iwl_write_direct32(priv, HBUS_TARG_PRPH_WADDR, - ((addr & 0x0000FFFF) | (3 << 24))); - wmb(); - _iwl_write_direct32(priv, HBUS_TARG_PRPH_WDAT, val); -} - -static inline void iwl_write_prph(struct iwl_priv *priv, u32 addr, u32 val) -{ - unsigned long reg_flags; +void iwl_set_bit(struct iwl_priv *priv, u32 reg, u32 mask); +void iwl_clear_bit(struct iwl_priv *priv, u32 reg, u32 mask); - 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); -} +int iwl_poll_bit(struct iwl_priv *priv, u32 addr, + u32 bits, u32 mask, int timeout); +int iwl_poll_direct_bit(struct iwl_priv *priv, u32 addr, u32 mask, + int timeout); -#define _iwl_set_bits_prph(priv, reg, mask) \ - _iwl_write_prph(priv, reg, (_iwl_read_prph(priv, reg) | mask)) +int iwl_grab_nic_access(struct iwl_priv *priv); +void iwl_release_nic_access(struct iwl_priv *priv); -static inline void iwl_set_bits_prph(struct iwl_priv *priv, u32 reg, u32 mask) -{ - unsigned long reg_flags; +u32 iwl_read_direct32(struct iwl_priv *priv, u32 reg); +void iwl_write_direct32(struct iwl_priv *priv, u32 reg, u32 value); - 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_mask_prph(priv, reg, bits, mask) \ - _iwl_write_prph(priv, reg, ((_iwl_read_prph(priv, reg) & mask) | bits)) +u32 iwl_read_prph(struct iwl_priv *priv, u32 reg); +void iwl_write_prph(struct iwl_priv *priv, u32 addr, u32 val); +void iwl_set_bits_prph(struct iwl_priv *priv, u32 reg, u32 mask); +void iwl_set_bits_mask_prph(struct iwl_priv *priv, u32 reg, + u32 bits, u32 mask); +void iwl_clear_bits_prph(struct iwl_priv *priv, u32 reg, u32 mask); -static inline void iwl_set_bits_mask_prph(struct iwl_priv *priv, u32 reg, - u32 bits, u32 mask) -{ - 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); -} - -static inline void iwl_clear_bits_prph(struct iwl_priv - *priv, u32 reg, u32 mask) -{ - 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) -{ - 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(); - 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) -{ - 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) -{ - 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); -} +u32 iwl_read_targ_mem(struct iwl_priv *priv, u32 addr); +void iwl_write_targ_mem(struct iwl_priv *priv, u32 addr, u32 val); #endif |