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Merge tag 'wireless-drivers-for-davem-2016-02-18' of git://git.kernel…
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….org/pub/scm/linux/kernel/git/kvalo/wireless-drivers

Kalle Valo says:

====================
rtlwifi

* fix broken VHT (802.11ac) support, reported by Linus

wlcore

* fix firmware initialisation regression on wl1271

iwlwifi

* fix a race that users reported when we try to load the firmware
  and the hardware rfkill interrupt triggers at the same time
* fix a very visible bug in scheduled scan: the firmware
  doesn't support scheduled scan with no profile configured and
  the supplicant sometimes requests such scheduled scans
* build system fix to be able to link iwlwifi statically into kernel
* firmware name update for 8265
* typo fix in return value
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
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David S. Miller committed Feb 19, 2016
2 parents 1003e19 + c699404 commit 0b7662c
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Showing 10 changed files with 175 additions and 100 deletions.
1 change: 0 additions & 1 deletion drivers/net/wireless/intel/iwlwifi/Kconfig
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Original file line number Diff line number Diff line change
Expand Up @@ -53,7 +53,6 @@ config IWLWIFI_LEDS

config IWLDVM
tristate "Intel Wireless WiFi DVM Firmware support"
depends on m
help
This is the driver that supports the DVM firmware. The list
of the devices that use this firmware is available here:
Expand Down
42 changes: 33 additions & 9 deletions drivers/net/wireless/intel/iwlwifi/iwl-8000.c
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Original file line number Diff line number Diff line change
Expand Up @@ -7,6 +7,7 @@
*
* Copyright(c) 2014 Intel Corporation. All rights reserved.
* Copyright(c) 2014 - 2015 Intel Mobile Communications GmbH
* Copyright(c) 2016 Intel Deutschland GmbH
*
* 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
Expand Down Expand Up @@ -70,12 +71,15 @@

/* Highest firmware API version supported */
#define IWL8000_UCODE_API_MAX 20
#define IWL8265_UCODE_API_MAX 20

/* Oldest version we won't warn about */
#define IWL8000_UCODE_API_OK 13
#define IWL8265_UCODE_API_OK 20

/* Lowest firmware API version supported */
#define IWL8000_UCODE_API_MIN 13
#define IWL8265_UCODE_API_MIN 20

/* NVM versions */
#define IWL8000_NVM_VERSION 0x0a1d
Expand All @@ -93,6 +97,10 @@
#define IWL8000_MODULE_FIRMWARE(api) \
IWL8000_FW_PRE "-" __stringify(api) ".ucode"

#define IWL8265_FW_PRE "iwlwifi-8265-"
#define IWL8265_MODULE_FIRMWARE(api) \
IWL8265_FW_PRE __stringify(api) ".ucode"

#define NVM_HW_SECTION_NUM_FAMILY_8000 10
#define DEFAULT_NVM_FILE_FAMILY_8000B "nvmData-8000B"
#define DEFAULT_NVM_FILE_FAMILY_8000C "nvmData-8000C"
Expand Down Expand Up @@ -144,10 +152,7 @@ static const struct iwl_tt_params iwl8000_tt_params = {
.support_tx_backoff = true,
};

#define IWL_DEVICE_8000 \
.ucode_api_max = IWL8000_UCODE_API_MAX, \
.ucode_api_ok = IWL8000_UCODE_API_OK, \
.ucode_api_min = IWL8000_UCODE_API_MIN, \
#define IWL_DEVICE_8000_COMMON \
.device_family = IWL_DEVICE_FAMILY_8000, \
.max_inst_size = IWL60_RTC_INST_SIZE, \
.max_data_size = IWL60_RTC_DATA_SIZE, \
Expand All @@ -167,10 +172,28 @@ static const struct iwl_tt_params iwl8000_tt_params = {
.thermal_params = &iwl8000_tt_params, \
.apmg_not_supported = true

#define IWL_DEVICE_8000 \
IWL_DEVICE_8000_COMMON, \
.ucode_api_max = IWL8000_UCODE_API_MAX, \
.ucode_api_ok = IWL8000_UCODE_API_OK, \
.ucode_api_min = IWL8000_UCODE_API_MIN \

#define IWL_DEVICE_8260 \
IWL_DEVICE_8000_COMMON, \
.ucode_api_max = IWL8000_UCODE_API_MAX, \
.ucode_api_ok = IWL8000_UCODE_API_OK, \
.ucode_api_min = IWL8000_UCODE_API_MIN \

#define IWL_DEVICE_8265 \
IWL_DEVICE_8000_COMMON, \
.ucode_api_max = IWL8265_UCODE_API_MAX, \
.ucode_api_ok = IWL8265_UCODE_API_OK, \
.ucode_api_min = IWL8265_UCODE_API_MIN \

const struct iwl_cfg iwl8260_2n_cfg = {
.name = "Intel(R) Dual Band Wireless N 8260",
.fw_name_pre = IWL8000_FW_PRE,
IWL_DEVICE_8000,
IWL_DEVICE_8260,
.ht_params = &iwl8000_ht_params,
.nvm_ver = IWL8000_NVM_VERSION,
.nvm_calib_ver = IWL8000_TX_POWER_VERSION,
Expand All @@ -179,7 +202,7 @@ const struct iwl_cfg iwl8260_2n_cfg = {
const struct iwl_cfg iwl8260_2ac_cfg = {
.name = "Intel(R) Dual Band Wireless AC 8260",
.fw_name_pre = IWL8000_FW_PRE,
IWL_DEVICE_8000,
IWL_DEVICE_8260,
.ht_params = &iwl8000_ht_params,
.nvm_ver = IWL8000_NVM_VERSION,
.nvm_calib_ver = IWL8000_TX_POWER_VERSION,
Expand All @@ -188,8 +211,8 @@ const struct iwl_cfg iwl8260_2ac_cfg = {

const struct iwl_cfg iwl8265_2ac_cfg = {
.name = "Intel(R) Dual Band Wireless AC 8265",
.fw_name_pre = IWL8000_FW_PRE,
IWL_DEVICE_8000,
.fw_name_pre = IWL8265_FW_PRE,
IWL_DEVICE_8265,
.ht_params = &iwl8000_ht_params,
.nvm_ver = IWL8000_NVM_VERSION,
.nvm_calib_ver = IWL8000_TX_POWER_VERSION,
Expand All @@ -209,7 +232,7 @@ const struct iwl_cfg iwl4165_2ac_cfg = {
const struct iwl_cfg iwl8260_2ac_sdio_cfg = {
.name = "Intel(R) Dual Band Wireless-AC 8260",
.fw_name_pre = IWL8000_FW_PRE,
IWL_DEVICE_8000,
IWL_DEVICE_8260,
.ht_params = &iwl8000_ht_params,
.nvm_ver = IWL8000_NVM_VERSION,
.nvm_calib_ver = IWL8000_TX_POWER_VERSION,
Expand All @@ -236,3 +259,4 @@ const struct iwl_cfg iwl4165_2ac_sdio_cfg = {
};

MODULE_FIRMWARE(IWL8000_MODULE_FIRMWARE(IWL8000_UCODE_API_OK));
MODULE_FIRMWARE(IWL8265_MODULE_FIRMWARE(IWL8265_UCODE_API_OK));
6 changes: 4 additions & 2 deletions drivers/net/wireless/intel/iwlwifi/iwl-drv.c
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Original file line number Diff line number Diff line change
Expand Up @@ -243,8 +243,10 @@ static int iwl_request_firmware(struct iwl_drv *drv, bool first)
if (drv->trans->cfg->device_family == IWL_DEVICE_FAMILY_8000) {
char rev_step = 'A' + CSR_HW_REV_STEP(drv->trans->hw_rev);

snprintf(drv->firmware_name, sizeof(drv->firmware_name),
"%s%c-%s.ucode", name_pre, rev_step, tag);
if (rev_step != 'A')
snprintf(drv->firmware_name,
sizeof(drv->firmware_name), "%s%c-%s.ucode",
name_pre, rev_step, tag);
}

IWL_DEBUG_INFO(drv, "attempting to load firmware %s'%s'\n",
Expand Down
4 changes: 4 additions & 0 deletions drivers/net/wireless/intel/iwlwifi/mvm/scan.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1298,6 +1298,10 @@ int iwl_mvm_sched_scan_start(struct iwl_mvm *mvm,
return -EBUSY;
}

/* we don't support "match all" in the firmware */
if (!req->n_match_sets)
return -EOPNOTSUPP;

ret = iwl_mvm_check_running_scans(mvm, type);
if (ret)
return ret;
Expand Down
9 changes: 9 additions & 0 deletions drivers/net/wireless/intel/iwlwifi/pcie/internal.h
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Original file line number Diff line number Diff line change
Expand Up @@ -490,6 +490,15 @@ static inline void iwl_enable_interrupts(struct iwl_trans *trans)
iwl_write32(trans, CSR_INT_MASK, trans_pcie->inta_mask);
}

static inline void iwl_enable_fw_load_int(struct iwl_trans *trans)
{
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);

IWL_DEBUG_ISR(trans, "Enabling FW load interrupt\n");
trans_pcie->inta_mask = CSR_INT_BIT_FH_TX;
iwl_write32(trans, CSR_INT_MASK, trans_pcie->inta_mask);
}

static inline void iwl_enable_rfkill_int(struct iwl_trans *trans)
{
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
Expand Down
8 changes: 5 additions & 3 deletions drivers/net/wireless/intel/iwlwifi/pcie/rx.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1438,9 +1438,11 @@ irqreturn_t iwl_pcie_irq_handler(int irq, void *dev_id)
inta & ~trans_pcie->inta_mask);
}

/* Re-enable all interrupts */
/* only Re-enable if disabled by irq */
if (test_bit(STATUS_INT_ENABLED, &trans->status))
/* we are loading the firmware, enable FH_TX interrupt only */
if (handled & CSR_INT_BIT_FH_TX)
iwl_enable_fw_load_int(trans);
/* only Re-enable all interrupt if disabled by irq */
else if (test_bit(STATUS_INT_ENABLED, &trans->status))
iwl_enable_interrupts(trans);
/* Re-enable RF_KILL if it occurred */
else if (handled & CSR_INT_BIT_RF_KILL)
Expand Down
188 changes: 109 additions & 79 deletions drivers/net/wireless/intel/iwlwifi/pcie/trans.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1021,82 +1021,6 @@ static int iwl_pcie_load_given_ucode_8000(struct iwl_trans *trans,
&first_ucode_section);
}

static int iwl_trans_pcie_start_fw(struct iwl_trans *trans,
const struct fw_img *fw, bool run_in_rfkill)
{
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
bool hw_rfkill;
int ret;

mutex_lock(&trans_pcie->mutex);

/* Someone called stop_device, don't try to start_fw */
if (trans_pcie->is_down) {
IWL_WARN(trans,
"Can't start_fw since the HW hasn't been started\n");
ret = EIO;
goto out;
}

/* This may fail if AMT took ownership of the device */
if (iwl_pcie_prepare_card_hw(trans)) {
IWL_WARN(trans, "Exit HW not ready\n");
ret = -EIO;
goto out;
}

iwl_enable_rfkill_int(trans);

/* If platform's RF_KILL switch is NOT set to KILL */
hw_rfkill = iwl_is_rfkill_set(trans);
if (hw_rfkill)
set_bit(STATUS_RFKILL, &trans->status);
else
clear_bit(STATUS_RFKILL, &trans->status);
iwl_trans_pcie_rf_kill(trans, hw_rfkill);
if (hw_rfkill && !run_in_rfkill) {
ret = -ERFKILL;
goto out;
}

iwl_write32(trans, CSR_INT, 0xFFFFFFFF);

ret = iwl_pcie_nic_init(trans);
if (ret) {
IWL_ERR(trans, "Unable to init nic\n");
goto out;
}

/* make sure rfkill handshake bits are cleared */
iwl_write32(trans, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
iwl_write32(trans, CSR_UCODE_DRV_GP1_CLR,
CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);

/* clear (again), then enable host interrupts */
iwl_write32(trans, CSR_INT, 0xFFFFFFFF);
iwl_enable_interrupts(trans);

/* really make sure rfkill handshake bits are cleared */
iwl_write32(trans, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
iwl_write32(trans, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);

/* Load the given image to the HW */
if (trans->cfg->device_family == IWL_DEVICE_FAMILY_8000)
ret = iwl_pcie_load_given_ucode_8000(trans, fw);
else
ret = iwl_pcie_load_given_ucode(trans, fw);

out:
mutex_unlock(&trans_pcie->mutex);
return ret;
}

static void iwl_trans_pcie_fw_alive(struct iwl_trans *trans, u32 scd_addr)
{
iwl_pcie_reset_ict(trans);
iwl_pcie_tx_start(trans, scd_addr);
}

static void _iwl_trans_pcie_stop_device(struct iwl_trans *trans, bool low_power)
{
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
Expand Down Expand Up @@ -1127,7 +1051,8 @@ static void _iwl_trans_pcie_stop_device(struct iwl_trans *trans, bool low_power)
* already dead.
*/
if (test_and_clear_bit(STATUS_DEVICE_ENABLED, &trans->status)) {
IWL_DEBUG_INFO(trans, "DEVICE_ENABLED bit was set and is now cleared\n");
IWL_DEBUG_INFO(trans,
"DEVICE_ENABLED bit was set and is now cleared\n");
iwl_pcie_tx_stop(trans);
iwl_pcie_rx_stop(trans);

Expand Down Expand Up @@ -1161,7 +1086,6 @@ static void _iwl_trans_pcie_stop_device(struct iwl_trans *trans, bool low_power)
iwl_disable_interrupts(trans);
spin_unlock(&trans_pcie->irq_lock);


/* clear all status bits */
clear_bit(STATUS_SYNC_HCMD_ACTIVE, &trans->status);
clear_bit(STATUS_INT_ENABLED, &trans->status);
Expand Down Expand Up @@ -1194,10 +1118,116 @@ static void _iwl_trans_pcie_stop_device(struct iwl_trans *trans, bool low_power)
if (hw_rfkill != was_hw_rfkill)
iwl_trans_pcie_rf_kill(trans, hw_rfkill);

/* re-take ownership to prevent other users from stealing the deivce */
/* re-take ownership to prevent other users from stealing the device */
iwl_pcie_prepare_card_hw(trans);
}

static int iwl_trans_pcie_start_fw(struct iwl_trans *trans,
const struct fw_img *fw, bool run_in_rfkill)
{
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
bool hw_rfkill;
int ret;

/* This may fail if AMT took ownership of the device */
if (iwl_pcie_prepare_card_hw(trans)) {
IWL_WARN(trans, "Exit HW not ready\n");
ret = -EIO;
goto out;
}

iwl_enable_rfkill_int(trans);

iwl_write32(trans, CSR_INT, 0xFFFFFFFF);

/*
* We enabled the RF-Kill interrupt and the handler may very
* well be running. Disable the interrupts to make sure no other
* interrupt can be fired.
*/
iwl_disable_interrupts(trans);

/* Make sure it finished running */
synchronize_irq(trans_pcie->pci_dev->irq);

mutex_lock(&trans_pcie->mutex);

/* If platform's RF_KILL switch is NOT set to KILL */
hw_rfkill = iwl_is_rfkill_set(trans);
if (hw_rfkill)
set_bit(STATUS_RFKILL, &trans->status);
else
clear_bit(STATUS_RFKILL, &trans->status);
iwl_trans_pcie_rf_kill(trans, hw_rfkill);
if (hw_rfkill && !run_in_rfkill) {
ret = -ERFKILL;
goto out;
}

/* Someone called stop_device, don't try to start_fw */
if (trans_pcie->is_down) {
IWL_WARN(trans,
"Can't start_fw since the HW hasn't been started\n");
ret = -EIO;
goto out;
}

/* make sure rfkill handshake bits are cleared */
iwl_write32(trans, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
iwl_write32(trans, CSR_UCODE_DRV_GP1_CLR,
CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);

/* clear (again), then enable host interrupts */
iwl_write32(trans, CSR_INT, 0xFFFFFFFF);

ret = iwl_pcie_nic_init(trans);
if (ret) {
IWL_ERR(trans, "Unable to init nic\n");
goto out;
}

/*
* Now, we load the firmware and don't want to be interrupted, even
* by the RF-Kill interrupt (hence mask all the interrupt besides the
* FH_TX interrupt which is needed to load the firmware). If the
* RF-Kill switch is toggled, we will find out after having loaded
* the firmware and return the proper value to the caller.
*/
iwl_enable_fw_load_int(trans);

/* really make sure rfkill handshake bits are cleared */
iwl_write32(trans, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
iwl_write32(trans, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);

/* Load the given image to the HW */
if (trans->cfg->device_family == IWL_DEVICE_FAMILY_8000)
ret = iwl_pcie_load_given_ucode_8000(trans, fw);
else
ret = iwl_pcie_load_given_ucode(trans, fw);
iwl_enable_interrupts(trans);

/* re-check RF-Kill state since we may have missed the interrupt */
hw_rfkill = iwl_is_rfkill_set(trans);
if (hw_rfkill)
set_bit(STATUS_RFKILL, &trans->status);
else
clear_bit(STATUS_RFKILL, &trans->status);

iwl_trans_pcie_rf_kill(trans, hw_rfkill);
if (hw_rfkill && !run_in_rfkill)
ret = -ERFKILL;

out:
mutex_unlock(&trans_pcie->mutex);
return ret;
}

static void iwl_trans_pcie_fw_alive(struct iwl_trans *trans, u32 scd_addr)
{
iwl_pcie_reset_ict(trans);
iwl_pcie_tx_start(trans, scd_addr);
}

static void iwl_trans_pcie_stop_device(struct iwl_trans *trans, bool low_power)
{
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
Expand Down
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