iwlagn: all function iwl-io.c receive iwl_bus

Which means that iwl-io.c doesn't need to include iwl-dev.h any more.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

24 files changed, 363 insertions, 351 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-1000.c b/drivers/net/wireless/iwlwifi/iwl-1000.c
index 7d60cd2f49c6..3368b8dea199 100644
--- a/drivers/net/wireless/iwlwifi/iwl-1000.c
+++ b/drivers/net/wireless/iwlwifi/iwl-1000.c
@@ -85,13 +85,13 @@ static void iwl1000_set_ct_threshold(struct iwl_priv *priv)
 static void iwl1000_nic_config(struct iwl_priv *priv)
 {
 	/* set CSR_HW_CONFIG_REG for uCode use */
-	iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
+	iwl_set_bit(bus(priv), CSR_HW_IF_CONFIG_REG,
 		    CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |
 		    CSR_HW_IF_CONFIG_REG_BIT_MAC_SI);
 
 	/* Setting digital SVR for 1000 card to 1.32V */
 	/* locking is acquired in iwl_set_bits_mask_prph() function */
-	iwl_set_bits_mask_prph(priv, APMG_DIGITAL_SVR_REG,
+	iwl_set_bits_mask_prph(bus(priv), APMG_DIGITAL_SVR_REG,
 				APMG_SVR_DIGITAL_VOLTAGE_1_32,
 				~APMG_SVR_VOLTAGE_CONFIG_BIT_MSK);
 }
diff --git a/drivers/net/wireless/iwlwifi/iwl-2000.c b/drivers/net/wireless/iwlwifi/iwl-2000.c
index 8d71eec36699..047c22b64285 100644
--- a/drivers/net/wireless/iwlwifi/iwl-2000.c
+++ b/drivers/net/wireless/iwlwifi/iwl-2000.c
@@ -89,7 +89,7 @@ static void iwl2000_nic_config(struct iwl_priv *priv)
 	iwl_rf_config(priv);
 
 	if (priv->cfg->iq_invert)
-		iwl_set_bit(priv, CSR_GP_DRIVER_REG,
+		iwl_set_bit(bus(priv), CSR_GP_DRIVER_REG,
 			    CSR_GP_DRIVER_REG_BIT_RADIO_IQ_INVER);
 }
 
diff --git a/drivers/net/wireless/iwlwifi/iwl-5000.c b/drivers/net/wireless/iwlwifi/iwl-5000.c
index 55fdbf57df98..d2ef4be44c61 100644
--- a/drivers/net/wireless/iwlwifi/iwl-5000.c
+++ b/drivers/net/wireless/iwlwifi/iwl-5000.c
@@ -75,7 +75,7 @@ static void iwl5000_nic_config(struct iwl_priv *priv)
 	 * (PCIe power is lost before PERST# is asserted),
 	 * causing ME FW to lose ownership and not being able to obtain it back.
 	 */
-	iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
+	iwl_set_bits_mask_prph(bus(priv), APMG_PS_CTRL_REG,
 				APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS,
 				~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS);
 
diff --git a/drivers/net/wireless/iwlwifi/iwl-6000.c b/drivers/net/wireless/iwlwifi/iwl-6000.c
index 63089bc28d9c..955a99cef949 100644
--- a/drivers/net/wireless/iwlwifi/iwl-6000.c
+++ b/drivers/net/wireless/iwlwifi/iwl-6000.c
@@ -83,7 +83,7 @@ static void iwl6050_additional_nic_config(struct iwl_priv *priv)
 {
 	/* Indicate calibration version to uCode. */
 	if (iwlagn_eeprom_calib_version(priv) >= 6)
-		iwl_set_bit(priv, CSR_GP_DRIVER_REG,
+		iwl_set_bit(bus(priv), CSR_GP_DRIVER_REG,
 				CSR_GP_DRIVER_REG_BIT_CALIB_VERSION6);
 }
 
@@ -91,9 +91,9 @@ static void iwl6150_additional_nic_config(struct iwl_priv *priv)
 {
 	/* Indicate calibration version to uCode. */
 	if (iwlagn_eeprom_calib_version(priv) >= 6)
-		iwl_set_bit(priv, CSR_GP_DRIVER_REG,
+		iwl_set_bit(bus(priv), CSR_GP_DRIVER_REG,
 				CSR_GP_DRIVER_REG_BIT_CALIB_VERSION6);
-	iwl_set_bit(priv, CSR_GP_DRIVER_REG,
+	iwl_set_bit(bus(priv), CSR_GP_DRIVER_REG,
 		    CSR_GP_DRIVER_REG_BIT_6050_1x2);
 }
 
@@ -105,7 +105,7 @@ static void iwl6000_nic_config(struct iwl_priv *priv)
 	/* no locking required for register write */
 	if (priv->cfg->pa_type == IWL_PA_INTERNAL) {
 		/* 2x2 IPA phy type */
-		iwl_write32(priv, CSR_GP_DRIVER_REG,
+		iwl_write32(bus(priv), CSR_GP_DRIVER_REG,
 			     CSR_GP_DRIVER_REG_BIT_RADIO_SKU_2x2_IPA);
 	}
 	/* do additional nic configuration if needed */
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-tt.c b/drivers/net/wireless/iwlwifi/iwl-agn-tt.c
index 1a39aafb3b05..495f93664741 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn-tt.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn-tt.c
@@ -181,19 +181,19 @@ static void iwl_tt_check_exit_ct_kill(unsigned long data)
 
 	if (tt->state == IWL_TI_CT_KILL) {
 		if (priv->thermal_throttle.ct_kill_toggle) {
-			iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
+			iwl_write32(bus(priv), CSR_UCODE_DRV_GP1_CLR,
 				    CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
 			priv->thermal_throttle.ct_kill_toggle = false;
 		} else {
-			iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
+			iwl_write32(bus(priv), CSR_UCODE_DRV_GP1_SET,
 				    CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
 			priv->thermal_throttle.ct_kill_toggle = true;
 		}
-		iwl_read32(priv, CSR_UCODE_DRV_GP1);
-		spin_lock_irqsave(&priv->reg_lock, flags);
-		if (!iwl_grab_nic_access(priv))
-			iwl_release_nic_access(priv);
-		spin_unlock_irqrestore(&priv->reg_lock, flags);
+		iwl_read32(bus(priv), CSR_UCODE_DRV_GP1);
+		spin_lock_irqsave(&bus(priv)->reg_lock, flags);
+		if (!iwl_grab_nic_access(bus(priv)))
+			iwl_release_nic_access(bus(priv));
+		spin_unlock_irqrestore(&bus(priv)->reg_lock, flags);
 
 		/* Reschedule the ct_kill timer to occur in
 		 * CT_KILL_EXIT_DURATION seconds to ensure we get a
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-ucode.c b/drivers/net/wireless/iwlwifi/iwl-agn-ucode.c
index 033f595a6d55..02b00d177323 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn-ucode.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn-ucode.c
@@ -85,29 +85,29 @@ static int iwlagn_load_section(struct iwl_priv *priv, const char *name,
 
 	priv->ucode_write_complete = 0;
 
-	iwl_write_direct32(priv,
+	iwl_write_direct32(bus(priv),
 		FH_TCSR_CHNL_TX_CONFIG_REG(FH_SRVC_CHNL),
 		FH_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_PAUSE);
 
-	iwl_write_direct32(priv,
+	iwl_write_direct32(bus(priv),
 		FH_SRVC_CHNL_SRAM_ADDR_REG(FH_SRVC_CHNL), dst_addr);
 
-	iwl_write_direct32(priv,
+	iwl_write_direct32(bus(priv),
 		FH_TFDIB_CTRL0_REG(FH_SRVC_CHNL),
 		phy_addr & FH_MEM_TFDIB_DRAM_ADDR_LSB_MSK);
 
-	iwl_write_direct32(priv,
+	iwl_write_direct32(bus(priv),
 		FH_TFDIB_CTRL1_REG(FH_SRVC_CHNL),
 		(iwl_get_dma_hi_addr(phy_addr)
 			<< FH_MEM_TFDIB_REG1_ADDR_BITSHIFT) | byte_cnt);
 
-	iwl_write_direct32(priv,
+	iwl_write_direct32(bus(priv),
 		FH_TCSR_CHNL_TX_BUF_STS_REG(FH_SRVC_CHNL),
 		1 << FH_TCSR_CHNL_TX_BUF_STS_REG_POS_TB_NUM |
 		1 << FH_TCSR_CHNL_TX_BUF_STS_REG_POS_TB_IDX |
 		FH_TCSR_CHNL_TX_BUF_STS_REG_VAL_TFDB_VALID);
 
-	iwl_write_direct32(priv,
+	iwl_write_direct32(bus(priv),
 		FH_TCSR_CHNL_TX_CONFIG_REG(FH_SRVC_CHNL),
 		FH_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_ENABLE	|
 		FH_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_DISABLE	|
@@ -384,9 +384,9 @@ static int iwl_verify_inst_sparse(struct iwl_priv *priv,
 		/* 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 */
-		iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
+		iwl_write_direct32(bus(priv), HBUS_TARG_MEM_RADDR,
 			i + IWLAGN_RTC_INST_LOWER_BOUND);
-		val = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
+		val = iwl_read32(bus(priv), HBUS_TARG_MEM_RDAT);
 		if (val != le32_to_cpu(*image))
 			return -EIO;
 	}
@@ -405,14 +405,14 @@ static void iwl_print_mismatch_inst(struct iwl_priv *priv,
 
 	IWL_DEBUG_FW(priv, "ucode inst image size is %u\n", len);
 
-	iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
+	iwl_write_direct32(bus(priv), HBUS_TARG_MEM_RADDR,
 			   IWLAGN_RTC_INST_LOWER_BOUND);
 
 	for (offs = 0;
 	     offs < len && errors < 20;
 	     offs += sizeof(u32), image++) {
 		/* read data comes through single port, auto-incr addr */
-		val = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
+		val = iwl_read32(bus(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 5d2696257541..37d2043fb7e9 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn.c
@@ -329,14 +329,14 @@ static void iwl_print_cont_event_trace(struct iwl_priv *priv, u32 base,
 		ptr = base + (4 * sizeof(u32)) + (start_idx * 3 * sizeof(u32));
 
 	/* Make sure device is powered up for SRAM reads */
-	spin_lock_irqsave(&priv->reg_lock, reg_flags);
-	if (iwl_grab_nic_access(priv)) {
-		spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
+	spin_lock_irqsave(&bus(priv)->reg_lock, reg_flags);
+	if (iwl_grab_nic_access(bus(priv))) {
+		spin_unlock_irqrestore(&bus(priv)->reg_lock, reg_flags);
 		return;
 	}
 
 	/* Set starting address; reads will auto-increment */
-	iwl_write32(priv, HBUS_TARG_MEM_RADDR, ptr);
+	iwl_write32(bus(priv), HBUS_TARG_MEM_RADDR, ptr);
 	rmb();
 
 	/*
@@ -344,20 +344,20 @@ 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_read32(priv, HBUS_TARG_MEM_RDAT);
-		time = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
+		ev = iwl_read32(bus(priv), HBUS_TARG_MEM_RDAT);
+		time = iwl_read32(bus(priv), HBUS_TARG_MEM_RDAT);
 		if (mode == 0) {
 			trace_iwlwifi_dev_ucode_cont_event(priv,
 							0, time, ev);
 		} else {
-			data = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
+			data = iwl_read32(bus(priv), HBUS_TARG_MEM_RDAT);
 			trace_iwlwifi_dev_ucode_cont_event(priv,
 						time, data, ev);
 		}
 	}
 	/* Allow device to power down */
-	iwl_release_nic_access(priv);
-	spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
+	iwl_release_nic_access(bus(priv));
+	spin_unlock_irqrestore(&bus(priv)->reg_lock, reg_flags);
 }
 
 static void iwl_continuous_event_trace(struct iwl_priv *priv)
@@ -370,10 +370,12 @@ static void iwl_continuous_event_trace(struct iwl_priv *priv)
 
 	base = priv->device_pointers.error_event_table;
 	if (iwlagn_hw_valid_rtc_data_addr(base)) {
-		capacity = iwl_read_targ_mem(priv, base);
-		num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
-		mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
-		next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
+		capacity = iwl_read_targ_mem(bus(priv), base);
+		num_wraps = iwl_read_targ_mem(bus(priv),
+						base + (2 * sizeof(u32)));
+		mode = iwl_read_targ_mem(bus(priv), base + (1 * sizeof(u32)));
+		next_entry = iwl_read_targ_mem(bus(priv),
+						base + (3 * sizeof(u32)));
 	} else
 		return;
 
@@ -1316,7 +1318,7 @@ static void iwl_rf_kill_ct_config(struct iwl_priv *priv)
 	int ret = 0;
 
 	spin_lock_irqsave(&priv->shrd->lock, flags);
-	iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
+	iwl_write32(bus(priv), CSR_UCODE_DRV_GP1_CLR,
 		    CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
 	spin_unlock_irqrestore(&priv->shrd->lock, flags);
 	priv->thermal_throttle.ct_kill_toggle = false;
@@ -1934,7 +1936,7 @@ static void iwlagn_mac_stop(struct ieee80211_hw *hw)
 
 	/* User space software may expect getting rfkill changes
 	 * even if interface is down */
-	iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
+	iwl_write32(bus(priv), CSR_INT, 0xFFFFFFFF);
 	iwl_enable_rfkill_int(priv);
 
 	IWL_DEBUG_MAC80211(priv, "leave\n");
@@ -2329,7 +2331,7 @@ static int iwlagn_mac_suspend(struct ieee80211_hw *hw,
 	device_set_wakeup_enable(priv->bus->dev, true);
 
 	/* Now let the ucode operate on its own */
-	iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
+	iwl_write32(bus(priv), CSR_UCODE_DRV_GP1_SET,
 			  CSR_UCODE_DRV_GP1_BIT_D3_CFG_COMPLETE);
 
 	goto out;
@@ -2355,19 +2357,19 @@ static int iwlagn_mac_resume(struct ieee80211_hw *hw)
 
 	mutex_lock(&priv->shrd->mutex);
 
-	iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
+	iwl_write32(bus(priv), CSR_UCODE_DRV_GP1_CLR,
 			  CSR_UCODE_DRV_GP1_BIT_D3_CFG_COMPLETE);
 
 	base = priv->device_pointers.error_event_table;
 	if (iwlagn_hw_valid_rtc_data_addr(base)) {
-		spin_lock_irqsave(&priv->reg_lock, flags);
-		ret = iwl_grab_nic_access_silent(priv);
+		spin_lock_irqsave(&bus(priv)->reg_lock, flags);
+		ret = iwl_grab_nic_access_silent(bus(priv));
 		if (ret == 0) {
-			iwl_write32(priv, HBUS_TARG_MEM_RADDR, base);
-			status = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
-			iwl_release_nic_access(priv);
+			iwl_write32(bus(priv), HBUS_TARG_MEM_RADDR, base);
+			status = iwl_read32(bus(priv), HBUS_TARG_MEM_RDAT);
+			iwl_release_nic_access(bus(priv));
 		}
-		spin_unlock_irqrestore(&priv->reg_lock, flags);
+		spin_unlock_irqrestore(&bus(priv)->reg_lock, flags);
 
 #ifdef CONFIG_IWLWIFI_DEBUGFS
 		if (ret == 0) {
@@ -2378,7 +2380,7 @@ static int iwlagn_mac_resume(struct ieee80211_hw *hw)
 
 			if (priv->wowlan_sram)
 				_iwl_read_targ_mem_words(
-					priv, 0x800000, priv->wowlan_sram,
+					bus(priv), 0x800000, priv->wowlan_sram,
 					priv->ucode_wowlan.data.len / 4);
 		}
 #endif
@@ -3186,7 +3188,7 @@ struct ieee80211_ops iwlagn_hw_ops = {
 
 static u32 iwl_hw_detect(struct iwl_priv *priv)
 {
-	return iwl_read32(priv, CSR_HW_REV);
+	return iwl_read32(bus(priv), CSR_HW_REV);
 }
 
 /* Size of one Rx buffer in host DRAM */
@@ -3286,7 +3288,7 @@ int iwl_probe(struct iwl_bus *bus, const struct iwl_trans_ops *trans_ops,
 	/* these spin locks will be used in apm_ops.init and EEPROM access
 	 * we should init now
 	 */
-	spin_lock_init(&priv->reg_lock);
+	spin_lock_init(&bus(priv)->reg_lock);
 	spin_lock_init(&priv->shrd->lock);
 
 	/*
@@ -3294,7 +3296,7 @@ int iwl_probe(struct iwl_bus *bus, const struct iwl_trans_ops *trans_ops,
 	 * strange state ... like being left stranded by a primary kernel
 	 * and this is now the kdump kernel trying to start up
 	 */
-	iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
+	iwl_write32(bus(priv), CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
 
 	/***********************
 	 * 3. Read REV register
@@ -3375,7 +3377,8 @@ int iwl_probe(struct iwl_bus *bus, const struct iwl_trans_ops *trans_ops,
 	iwl_enable_rfkill_int(priv);
 
 	/* If platform's RF_KILL switch is NOT set to KILL */
-	if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
+	if (iwl_read32(bus(priv),
+			CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
 		clear_bit(STATUS_RF_KILL_HW, &priv->shrd->status);
 	else
 		set_bit(STATUS_RF_KILL_HW, &priv->shrd->status);
diff --git a/drivers/net/wireless/iwlwifi/iwl-bus.h b/drivers/net/wireless/iwlwifi/iwl-bus.h
index e1cb65c45395..83aed46673e1 100644
--- a/drivers/net/wireless/iwlwifi/iwl-bus.h
+++ b/drivers/net/wireless/iwlwifi/iwl-bus.h
@@ -66,6 +66,7 @@
 /*This file includes the declaration that are exported from the bus layer */
 
 #include <linux/types.h>
+#include <linux/spinlock.h>
 
 struct iwl_shared;
 struct iwl_bus;
@@ -96,6 +97,7 @@ struct iwl_bus_ops {
  * @ops - pointer to iwl_bus_ops
  * @shrd - pointer to iwl_shared which holds shared data from the upper layer
  * @irq - the irq number for the device
+ * @reg_lock - protect hw register access
  */
 struct iwl_bus {
 	/* Common data to all buses */
@@ -104,6 +106,7 @@ struct iwl_bus {
 	struct iwl_shared *shrd;
 
 	unsigned int irq;
+	spinlock_t reg_lock;
 
 	/* pointer to bus specific struct */
 	/*Ensure that this pointer will always be aligned to sizeof pointer */
diff --git a/drivers/net/wireless/iwlwifi/iwl-core.c b/drivers/net/wireless/iwlwifi/iwl-core.c
index 048c8e2578f5..411edc8f3f9d 100644
--- a/drivers/net/wireless/iwlwifi/iwl-core.c
+++ b/drivers/net/wireless/iwlwifi/iwl-core.c
@@ -907,9 +907,10 @@ static int iwl_apm_stop_master(struct iwl_priv *priv)
 	int ret = 0;
 
 	/* stop device's busmaster DMA activity */
-	iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_STOP_MASTER);
+	iwl_set_bit(bus(priv), CSR_RESET, CSR_RESET_REG_FLAG_STOP_MASTER);
 
-	ret = iwl_poll_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_MASTER_DISABLED,
+	ret = iwl_poll_bit(bus(priv), CSR_RESET,
+			CSR_RESET_REG_FLAG_MASTER_DISABLED,
 			CSR_RESET_REG_FLAG_MASTER_DISABLED, 100);
 	if (ret)
 		IWL_WARN(priv, "Master Disable Timed Out, 100 usec\n");
@@ -929,7 +930,7 @@ void iwl_apm_stop(struct iwl_priv *priv)
 	iwl_apm_stop_master(priv);
 
 	/* Reset the entire device */
-	iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
+	iwl_set_bit(bus(priv), CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
 
 	udelay(10);
 
@@ -937,7 +938,7 @@ void iwl_apm_stop(struct iwl_priv *priv)
 	 * Clear "initialization complete" bit to move adapter from
 	 * D0A* (powered-up Active) --> D0U* (Uninitialized) state.
 	 */
-	iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
+	iwl_clear_bit(bus(priv), CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
 }
 
 
@@ -957,45 +958,45 @@ int iwl_apm_init(struct iwl_priv *priv)
 	 */
 
 	/* Disable L0S exit timer (platform NMI Work/Around) */
-	iwl_set_bit(priv, CSR_GIO_CHICKEN_BITS,
+	iwl_set_bit(bus(priv), CSR_GIO_CHICKEN_BITS,
 			  CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER);
 
 	/*
 	 * Disable L0s without affecting L1;
 	 *  don't wait for ICH L0s (ICH bug W/A)
 	 */
-	iwl_set_bit(priv, CSR_GIO_CHICKEN_BITS,
+	iwl_set_bit(bus(priv), CSR_GIO_CHICKEN_BITS,
 			  CSR_GIO_CHICKEN_BITS_REG_BIT_L1A_NO_L0S_RX);
 
 	/* Set FH wait threshold to maximum (HW error during stress W/A) */
-	iwl_set_bit(priv, CSR_DBG_HPET_MEM_REG, CSR_DBG_HPET_MEM_REG_VAL);
+	iwl_set_bit(bus(priv), CSR_DBG_HPET_MEM_REG, CSR_DBG_HPET_MEM_REG_VAL);
 
 	/*
 	 * Enable HAP INTA (interrupt from management bus) to
 	 * wake device's PCI Express link L1a -> L0s
 	 */
-	iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
+	iwl_set_bit(bus(priv), CSR_HW_IF_CONFIG_REG,
 				    CSR_HW_IF_CONFIG_REG_BIT_HAP_WAKE_L1A);
 
 	bus_apm_config(priv->bus);
 
 	/* Configure analog phase-lock-loop before activating to D0A */
 	if (priv->cfg->base_params->pll_cfg_val)
-		iwl_set_bit(priv, CSR_ANA_PLL_CFG,
+		iwl_set_bit(bus(priv), CSR_ANA_PLL_CFG,
 			    priv->cfg->base_params->pll_cfg_val);
 
 	/*
 	 * Set "initialization complete" bit to move adapter from
 	 * D0U* --> D0A* (powered-up active) state.
 	 */
-	iwl_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
+	iwl_set_bit(bus(priv), CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
 
 	/*
 	 * Wait for clock stabilization; once stabilized, access to
 	 * device-internal resources is supported, e.g. iwl_write_prph()
 	 * and accesses to uCode SRAM.
 	 */
-	ret = iwl_poll_bit(priv, CSR_GP_CNTRL,
+	ret = iwl_poll_bit(bus(priv), CSR_GP_CNTRL,
 			CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
 			CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
 	if (ret < 0) {
@@ -1010,11 +1011,11 @@ int iwl_apm_init(struct iwl_priv *priv)
 	 * do not disable clocks.  This preserves any hardware bits already
 	 * set by default in "CLK_CTRL_REG" after reset.
 	 */
-	iwl_write_prph(priv, APMG_CLK_EN_REG, APMG_CLK_VAL_DMA_CLK_RQT);
+	iwl_write_prph(bus(priv), APMG_CLK_EN_REG, APMG_CLK_VAL_DMA_CLK_RQT);
 	udelay(20);
 
 	/* Disable L1-Active */
-	iwl_set_bits_prph(priv, APMG_PCIDEV_STT_REG,
+	iwl_set_bits_prph(bus(priv), APMG_PCIDEV_STT_REG,
 			  APMG_PCIDEV_STT_VAL_L1_ACT_DIS);
 
 	set_bit(STATUS_DEVICE_ENABLED, &priv->shrd->status);
diff --git a/drivers/net/wireless/iwlwifi/iwl-debugfs.c b/drivers/net/wireless/iwlwifi/iwl-debugfs.c
index a12b8d47ccbc..a01beb31d994 100644
--- a/drivers/net/wireless/iwlwifi/iwl-debugfs.c
+++ b/drivers/net/wireless/iwlwifi/iwl-debugfs.c
@@ -254,7 +254,7 @@ static ssize_t iwl_dbgfs_sram_read(struct file *file,
 	sram = priv->dbgfs_sram_offset & ~0x3;
 
 	/* read the first u32 from sram */
-	val = iwl_read_targ_mem(priv, sram);
+	val = iwl_read_targ_mem(bus(priv), sram);
 
 	for (; len; len--) {
 		/* put the address at the start of every line */
@@ -273,7 +273,7 @@ static ssize_t iwl_dbgfs_sram_read(struct file *file,
 		if (++offset == 4) {
 			sram += 4;
 			offset = 0;
-			val = iwl_read_targ_mem(priv, sram);
+			val = iwl_read_targ_mem(bus(priv), sram);
 		}
 
 		/* put in extra spaces and split lines for human readability */
@@ -1954,7 +1954,7 @@ static ssize_t iwl_dbgfs_power_save_status_read(struct file *file,
 	const size_t bufsz = sizeof(buf);
 	u32 pwrsave_status;
 
-	pwrsave_status = iwl_read32(priv, CSR_GP_CNTRL) &
+	pwrsave_status = iwl_read32(bus(priv), CSR_GP_CNTRL) &
 			CSR_GP_REG_POWER_SAVE_STATUS_MSK;
 
 	pos += scnprintf(buf + pos, bufsz - pos, "Power Save Status: ");
diff --git a/drivers/net/wireless/iwlwifi/iwl-dev.h b/drivers/net/wireless/iwlwifi/iwl-dev.h
index 12cca9deabdc..711f2afceedd 100644
--- a/drivers/net/wireless/iwlwifi/iwl-dev.h
+++ b/drivers/net/wireless/iwlwifi/iwl-dev.h
@@ -1169,9 +1169,6 @@ struct iwl_priv {
 	u8 scan_tx_ant[IEEE80211_NUM_BANDS];
 	u8 mgmt_tx_ant;
 
-	/* spinlock */
-	spinlock_t reg_lock;	/* protect hw register access */
-
 	/*TODO: remove these pointers - use bus(priv) instead */
 	struct iwl_bus *bus;	/* bus specific data */
 
diff --git a/drivers/net/wireless/iwlwifi/iwl-devtrace.h b/drivers/net/wireless/iwlwifi/iwl-devtrace.h
index 2c84ba95afca..8a51c5ccda1e 100644
--- a/drivers/net/wireless/iwlwifi/iwl-devtrace.h
+++ b/drivers/net/wireless/iwlwifi/iwl-devtrace.h
@@ -29,6 +29,8 @@
 
 #include <linux/tracepoint.h>
 
+struct iwl_priv;
+
 #if !defined(CONFIG_IWLWIFI_DEVICE_TRACING) || defined(__CHECKER__)
 #undef TRACE_EVENT
 #define TRACE_EVENT(name, proto, ...) \
diff --git a/drivers/net/wireless/iwlwifi/iwl-eeprom.c b/drivers/net/wireless/iwlwifi/iwl-eeprom.c
index c790f7f2ffaa..80ee65be9cd1 100644
--- a/drivers/net/wireless/iwlwifi/iwl-eeprom.c
+++ b/drivers/net/wireless/iwlwifi/iwl-eeprom.c
@@ -155,11 +155,11 @@ static int iwl_eeprom_acquire_semaphore(struct iwl_priv *priv)
 
 	for (count = 0; count < EEPROM_SEM_RETRY_LIMIT; count++) {
 		/* Request semaphore */
-		iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
+		iwl_set_bit(bus(priv), CSR_HW_IF_CONFIG_REG,
 			    CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM);
 
 		/* See if we got it */
-		ret = iwl_poll_bit(priv, CSR_HW_IF_CONFIG_REG,
+		ret = iwl_poll_bit(bus(priv), CSR_HW_IF_CONFIG_REG,
 				CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM,
 				CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM,
 				EEPROM_SEM_TIMEOUT);
@@ -176,14 +176,14 @@ static int iwl_eeprom_acquire_semaphore(struct iwl_priv *priv)
 
 static void iwl_eeprom_release_semaphore(struct iwl_priv *priv)
 {
-	iwl_clear_bit(priv, CSR_HW_IF_CONFIG_REG,
+	iwl_clear_bit(bus(priv), CSR_HW_IF_CONFIG_REG,
 		CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM);
 
 }
 
 static int iwl_eeprom_verify_signature(struct iwl_priv *priv)
 {
-	u32 gp = iwl_read32(priv, CSR_EEPROM_GP) & CSR_EEPROM_GP_VALID_MSK;
+	u32 gp = iwl_read32(bus(priv), CSR_EEPROM_GP) & CSR_EEPROM_GP_VALID_MSK;
 	int ret = 0;
 
 	IWL_DEBUG_EEPROM(priv, "EEPROM signature=0x%08x\n", gp);
@@ -216,13 +216,13 @@ static int iwl_eeprom_verify_signature(struct iwl_priv *priv)
 
 static void iwl_set_otp_access(struct iwl_priv *priv, enum iwl_access_mode mode)
 {
-	iwl_read32(priv, CSR_OTP_GP_REG);
+	iwl_read32(bus(priv), CSR_OTP_GP_REG);
 
 	if (mode == IWL_OTP_ACCESS_ABSOLUTE)
-		iwl_clear_bit(priv, CSR_OTP_GP_REG,
+		iwl_clear_bit(bus(priv), CSR_OTP_GP_REG,
 			      CSR_OTP_GP_REG_OTP_ACCESS_MODE);
 	else
-		iwl_set_bit(priv, CSR_OTP_GP_REG,
+		iwl_set_bit(bus(priv), CSR_OTP_GP_REG,
 			    CSR_OTP_GP_REG_OTP_ACCESS_MODE);
 }
 
@@ -243,7 +243,7 @@ static int iwl_get_nvm_type(struct iwl_priv *priv, u32 hw_rev)
 		nvm_type = NVM_DEVICE_TYPE_EEPROM;
 		break;
 	default:
-		otpgp = iwl_read32(priv, CSR_OTP_GP_REG);
+		otpgp = iwl_read32(bus(priv), CSR_OTP_GP_REG);
 		if (otpgp & CSR_OTP_GP_REG_DEVICE_SELECT)
 			nvm_type = NVM_DEVICE_TYPE_OTP;
 		else
@@ -258,22 +258,22 @@ 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) |
+	iwl_write32(bus(priv), CSR_GP_CNTRL,
+		    iwl_read32(bus(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,
+	ret = iwl_poll_bit(bus(priv), CSR_GP_CNTRL,
 				 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 {
-		iwl_set_bits_prph(priv, APMG_PS_CTRL_REG,
+		iwl_set_bits_prph(bus(priv), APMG_PS_CTRL_REG,
 				  APMG_PS_CTRL_VAL_RESET_REQ);
 		udelay(5);
-		iwl_clear_bits_prph(priv, APMG_PS_CTRL_REG,
+		iwl_clear_bits_prph(bus(priv), APMG_PS_CTRL_REG,
 				    APMG_PS_CTRL_VAL_RESET_REQ);
 
 		/*
@@ -281,7 +281,7 @@ static int iwl_init_otp_access(struct iwl_priv *priv)
 		 * this is only applicable for HW with OTP shadow RAM
 		 */
 		if (priv->cfg->base_params->shadow_ram_support)
-			iwl_set_bit(priv, CSR_DBG_LINK_PWR_MGMT_REG,
+			iwl_set_bit(bus(priv), CSR_DBG_LINK_PWR_MGMT_REG,
 				CSR_RESET_LINK_PWR_MGMT_DISABLED);
 	}
 	return ret;
@@ -293,9 +293,9 @@ 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,
+	iwl_write32(bus(priv), CSR_EEPROM_REG,
 		    CSR_EEPROM_REG_MSK_ADDR & (addr << 1));
-	ret = iwl_poll_bit(priv, CSR_EEPROM_REG,
+	ret = iwl_poll_bit(bus(priv), CSR_EEPROM_REG,
 				 CSR_EEPROM_REG_READ_VALID_MSK,
 				 CSR_EEPROM_REG_READ_VALID_MSK,
 				 IWL_EEPROM_ACCESS_TIMEOUT);
@@ -303,13 +303,13 @@ static int iwl_read_otp_word(struct iwl_priv *priv, u16 addr, __le16 *eeprom_dat
 		IWL_ERR(priv, "Time out reading OTP[%d]\n", addr);
 		return ret;
 	}
-	r = iwl_read32(priv, CSR_EEPROM_REG);
+	r = iwl_read32(bus(priv), CSR_EEPROM_REG);
 	/* check for ECC errors: */
-	otpgp = iwl_read32(priv, CSR_OTP_GP_REG);
+	otpgp = iwl_read32(bus(priv), CSR_OTP_GP_REG);
 	if (otpgp & CSR_OTP_GP_REG_ECC_UNCORR_STATUS_MSK) {
 		/* stop in this case */
 		/* set the uncorrectable OTP ECC bit for acknowledgement */
-		iwl_set_bit(priv, CSR_OTP_GP_REG,
+		iwl_set_bit(bus(priv), CSR_OTP_GP_REG,
 			CSR_OTP_GP_REG_ECC_UNCORR_STATUS_MSK);
 		IWL_ERR(priv, "Uncorrectable OTP ECC error, abort OTP read\n");
 		return -EINVAL;
@@ -317,7 +317,7 @@ static int iwl_read_otp_word(struct iwl_priv *priv, u16 addr, __le16 *eeprom_dat
 	if (otpgp & CSR_OTP_GP_REG_ECC_CORR_STATUS_MSK) {
 		/* continue in this case */
 		/* set the correctable OTP ECC bit for acknowledgement */
-		iwl_set_bit(priv, CSR_OTP_GP_REG,
+		iwl_set_bit(bus(priv), CSR_OTP_GP_REG,
 				CSR_OTP_GP_REG_ECC_CORR_STATUS_MSK);
 		IWL_ERR(priv, "Correctable OTP ECC error, continue read\n");
 	}
@@ -424,7 +424,7 @@ u16 iwl_eeprom_query16(const struct iwl_priv *priv, size_t offset)
 int iwl_eeprom_init(struct iwl_priv *priv, u32 hw_rev)
 {
 	__le16 *e;
-	u32 gp = iwl_read32(priv, CSR_EEPROM_GP);
+	u32 gp = iwl_read32(bus(priv), CSR_EEPROM_GP);
 	int sz;
 	int ret;
 	u16 addr;
@@ -469,11 +469,11 @@ 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) &
+		iwl_write32(bus(priv), CSR_EEPROM_GP,
+			    iwl_read32(bus(priv), CSR_EEPROM_GP) &
 			    ~CSR_EEPROM_GP_IF_OWNER_MSK);
 
-		iwl_set_bit(priv, CSR_OTP_GP_REG,
+		iwl_set_bit(bus(priv), CSR_OTP_GP_REG,
 			     CSR_OTP_GP_REG_ECC_CORR_STATUS_MSK |
 			     CSR_OTP_GP_REG_ECC_UNCORR_STATUS_MSK);
 		/* traversing the linked list if no shadow ram supported */
@@ -498,10 +498,10 @@ 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,
+			iwl_write32(bus(priv), CSR_EEPROM_REG,
 				    CSR_EEPROM_REG_MSK_ADDR & (addr << 1));
 
-			ret = iwl_poll_bit(priv, CSR_EEPROM_REG,
+			ret = iwl_poll_bit(bus(priv), CSR_EEPROM_REG,
 						  CSR_EEPROM_REG_READ_VALID_MSK,
 						  CSR_EEPROM_REG_READ_VALID_MSK,
 						  IWL_EEPROM_ACCESS_TIMEOUT);
@@ -509,7 +509,7 @@ 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_read32(priv, CSR_EEPROM_REG);
+			r = iwl_read32(bus(priv), CSR_EEPROM_REG);
 			e[addr / 2] = cpu_to_le16(r >> 16);
 		}
 	}
@@ -838,7 +838,7 @@ void iwl_rf_config(struct iwl_priv *priv)
 
 	/* write radio config values to register */
 	if (EEPROM_RF_CFG_TYPE_MSK(radio_cfg) <= EEPROM_RF_CONFIG_TYPE_MAX) {
-		iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
+		iwl_set_bit(bus(priv), CSR_HW_IF_CONFIG_REG,
 			    EEPROM_RF_CFG_TYPE_MSK(radio_cfg) |
 			    EEPROM_RF_CFG_STEP_MSK(radio_cfg) |
 			    EEPROM_RF_CFG_DASH_MSK(radio_cfg));
@@ -850,7 +850,7 @@ void iwl_rf_config(struct iwl_priv *priv)
 		WARN_ON(1);
 
 	/* set CSR_HW_CONFIG_REG for uCode use */
-	iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
+	iwl_set_bit(bus(priv), CSR_HW_IF_CONFIG_REG,
 		    CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |
 		    CSR_HW_IF_CONFIG_REG_BIT_MAC_SI);
 }
diff --git a/drivers/net/wireless/iwlwifi/iwl-helpers.h b/drivers/net/wireless/iwlwifi/iwl-helpers.h
index f744fdc39a4d..8ca624d2a8b0 100644
--- a/drivers/net/wireless/iwlwifi/iwl-helpers.h
+++ b/drivers/net/wireless/iwlwifi/iwl-helpers.h
@@ -141,7 +141,7 @@ static inline void iwl_wake_any_queue(struct iwl_priv *priv,
 static inline void iwl_enable_rfkill_int(struct iwl_priv *priv)
 {
 	IWL_DEBUG_ISR(priv, "Enabling rfkill interrupt\n");
-	iwl_write32(priv, CSR_INT_MASK, CSR_INT_BIT_RF_KILL);
+	iwl_write32(bus(priv), CSR_INT_MASK, CSR_INT_BIT_RF_KILL);
 }
 
 /**
diff --git a/drivers/net/wireless/iwlwifi/iwl-io.c b/drivers/net/wireless/iwlwifi/iwl-io.c
index aa4a90674452..3ffa8e62b856 100644
--- a/drivers/net/wireless/iwlwifi/iwl-io.c
+++ b/drivers/net/wireless/iwlwifi/iwl-io.c
@@ -25,46 +25,50 @@
  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  *
  *****************************************************************************/
+#include <linux/delay.h>
+#include <linux/device.h>
 
 #include "iwl-