summaryrefslogtreecommitdiff
path: root/drivers/net/wireless/intel/iwlwifi/iwl-io.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/net/wireless/intel/iwlwifi/iwl-io.c')
-rw-r--r--drivers/net/wireless/intel/iwlwifi/iwl-io.c190
1 files changed, 97 insertions, 93 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-io.c b/drivers/net/wireless/intel/iwlwifi/iwl-io.c
index c527b8c10370..b1944584c693 100644
--- a/drivers/net/wireless/intel/iwlwifi/iwl-io.c
+++ b/drivers/net/wireless/intel/iwlwifi/iwl-io.c
@@ -1,32 +1,8 @@
-/******************************************************************************
- *
- * Copyright(c) 2003 - 2014 Intel Corporation. All rights reserved.
- * Copyright(c) 2015 - 2016 Intel Deutschland GmbH
- *
- * 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 <linuxwifi@intel.com>
- * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
- *
- *****************************************************************************/
-#include <linux/delay.h>
+// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
+/*
+ * Copyright (C) 2003-2014, 2018-2022, 2024-2025 Intel Corporation
+ * Copyright (C) 2015-2016 Intel Deutschland GmbH
+ */
#include <linux/device.h>
#include <linux/export.h>
@@ -36,6 +12,7 @@
#include "iwl-debug.h"
#include "iwl-prph.h"
#include "iwl-fh.h"
+#include "pcie/gen1_2/internal.h"
void iwl_write8(struct iwl_trans *trans, u32 ofs, u8 val)
{
@@ -70,56 +47,51 @@ IWL_EXPORT_SYMBOL(iwl_read32);
#define IWL_POLL_INTERVAL 10 /* microseconds */
-int iwl_poll_bit(struct iwl_trans *trans, u32 addr,
- u32 bits, u32 mask, int timeout)
+int iwl_poll_bits_mask(struct iwl_trans *trans, u32 addr,
+ u32 bits, u32 mask, int timeout)
{
int t = 0;
do {
if ((iwl_read32(trans, addr) & mask) == (bits & mask))
- return t;
+ return 0;
udelay(IWL_POLL_INTERVAL);
t += IWL_POLL_INTERVAL;
} while (t < timeout);
return -ETIMEDOUT;
}
-IWL_EXPORT_SYMBOL(iwl_poll_bit);
+IWL_EXPORT_SYMBOL(iwl_poll_bits_mask);
u32 iwl_read_direct32(struct iwl_trans *trans, u32 reg)
{
- u32 value = 0x5a5a5a5a;
- unsigned long flags;
- if (iwl_trans_grab_nic_access(trans, &flags)) {
- value = iwl_read32(trans, reg);
- iwl_trans_release_nic_access(trans, &flags);
+ if (iwl_trans_grab_nic_access(trans)) {
+ u32 value = iwl_read32(trans, reg);
+
+ iwl_trans_release_nic_access(trans);
+ return value;
}
- return value;
+ /* return as if we have a HW timeout/failure */
+ return 0x5a5a5a5a;
}
-IWL_EXPORT_SYMBOL(iwl_read_direct32);
void iwl_write_direct32(struct iwl_trans *trans, u32 reg, u32 value)
{
- unsigned long flags;
-
- if (iwl_trans_grab_nic_access(trans, &flags)) {
+ if (iwl_trans_grab_nic_access(trans)) {
iwl_write32(trans, reg, value);
- iwl_trans_release_nic_access(trans, &flags);
+ iwl_trans_release_nic_access(trans);
}
}
IWL_EXPORT_SYMBOL(iwl_write_direct32);
void iwl_write_direct64(struct iwl_trans *trans, u64 reg, u64 value)
{
- unsigned long flags;
-
- if (iwl_trans_grab_nic_access(trans, &flags)) {
+ if (iwl_trans_grab_nic_access(trans)) {
iwl_write64(trans, reg, value);
- iwl_trans_release_nic_access(trans, &flags);
+ iwl_trans_release_nic_access(trans);
}
}
-IWL_EXPORT_SYMBOL(iwl_write_direct64);
int iwl_poll_direct_bit(struct iwl_trans *trans, u32 addr, u32 mask,
int timeout)
@@ -135,7 +107,6 @@ int iwl_poll_direct_bit(struct iwl_trans *trans, u32 addr, u32 mask,
return -ETIMEDOUT;
}
-IWL_EXPORT_SYMBOL(iwl_poll_direct_bit);
u32 iwl_read_prph_no_grab(struct iwl_trans *trans, u32 ofs)
{
@@ -143,14 +114,12 @@ u32 iwl_read_prph_no_grab(struct iwl_trans *trans, u32 ofs)
trace_iwlwifi_dev_ioread_prph32(trans->dev, ofs, val);
return val;
}
-IWL_EXPORT_SYMBOL(iwl_read_prph_no_grab);
void iwl_write_prph_no_grab(struct iwl_trans *trans, u32 ofs, u32 val)
{
trace_iwlwifi_dev_iowrite_prph32(trans->dev, ofs, val);
iwl_trans_write_prph(trans, ofs, val);
}
-IWL_EXPORT_SYMBOL(iwl_write_prph_no_grab);
void iwl_write_prph64_no_grab(struct iwl_trans *trans, u64 ofs, u64 val)
{
@@ -158,31 +127,31 @@ void iwl_write_prph64_no_grab(struct iwl_trans *trans, u64 ofs, u64 val)
iwl_write_prph_no_grab(trans, ofs, val & 0xffffffff);
iwl_write_prph_no_grab(trans, ofs + 4, val >> 32);
}
-IWL_EXPORT_SYMBOL(iwl_write_prph64_no_grab);
u32 iwl_read_prph(struct iwl_trans *trans, u32 ofs)
{
- unsigned long flags;
- u32 val = 0x5a5a5a5a;
+ if (iwl_trans_grab_nic_access(trans)) {
+ u32 val = iwl_read_prph_no_grab(trans, ofs);
- if (iwl_trans_grab_nic_access(trans, &flags)) {
- val = iwl_read_prph_no_grab(trans, ofs);
- iwl_trans_release_nic_access(trans, &flags);
+ iwl_trans_release_nic_access(trans);
+
+ return val;
}
- return val;
+
+ /* return as if we have a HW timeout/failure */
+ return 0x5a5a5a5a;
}
IWL_EXPORT_SYMBOL(iwl_read_prph);
-void iwl_write_prph(struct iwl_trans *trans, u32 ofs, u32 val)
+void iwl_write_prph_delay(struct iwl_trans *trans, u32 ofs, u32 val, u32 delay_ms)
{
- unsigned long flags;
-
- if (iwl_trans_grab_nic_access(trans, &flags)) {
+ if (iwl_trans_grab_nic_access(trans)) {
+ mdelay(delay_ms);
iwl_write_prph_no_grab(trans, ofs, val);
- iwl_trans_release_nic_access(trans, &flags);
+ iwl_trans_release_nic_access(trans);
}
}
-IWL_EXPORT_SYMBOL(iwl_write_prph);
+IWL_EXPORT_SYMBOL(iwl_write_prph_delay);
int iwl_poll_prph_bit(struct iwl_trans *trans, u32 addr,
u32 bits, u32 mask, int timeout)
@@ -191,7 +160,7 @@ int iwl_poll_prph_bit(struct iwl_trans *trans, u32 addr,
do {
if ((iwl_read_prph(trans, addr) & mask) == (bits & mask))
- return t;
+ return 0;
udelay(IWL_POLL_INTERVAL);
t += IWL_POLL_INTERVAL;
} while (t < timeout);
@@ -201,13 +170,11 @@ int iwl_poll_prph_bit(struct iwl_trans *trans, u32 addr,
void iwl_set_bits_prph(struct iwl_trans *trans, u32 ofs, u32 mask)
{
- unsigned long flags;
-
- if (iwl_trans_grab_nic_access(trans, &flags)) {
+ if (iwl_trans_grab_nic_access(trans)) {
iwl_write_prph_no_grab(trans, ofs,
iwl_read_prph_no_grab(trans, ofs) |
mask);
- iwl_trans_release_nic_access(trans, &flags);
+ iwl_trans_release_nic_access(trans);
}
}
IWL_EXPORT_SYMBOL(iwl_set_bits_prph);
@@ -215,46 +182,41 @@ IWL_EXPORT_SYMBOL(iwl_set_bits_prph);
void iwl_set_bits_mask_prph(struct iwl_trans *trans, u32 ofs,
u32 bits, u32 mask)
{
- unsigned long flags;
-
- if (iwl_trans_grab_nic_access(trans, &flags)) {
+ if (iwl_trans_grab_nic_access(trans)) {
iwl_write_prph_no_grab(trans, ofs,
(iwl_read_prph_no_grab(trans, ofs) &
mask) | bits);
- iwl_trans_release_nic_access(trans, &flags);
+ iwl_trans_release_nic_access(trans);
}
}
IWL_EXPORT_SYMBOL(iwl_set_bits_mask_prph);
void iwl_clear_bits_prph(struct iwl_trans *trans, u32 ofs, u32 mask)
{
- unsigned long flags;
u32 val;
- if (iwl_trans_grab_nic_access(trans, &flags)) {
+ if (iwl_trans_grab_nic_access(trans)) {
val = iwl_read_prph_no_grab(trans, ofs);
iwl_write_prph_no_grab(trans, ofs, (val & ~mask));
- iwl_trans_release_nic_access(trans, &flags);
+ iwl_trans_release_nic_access(trans);
}
}
IWL_EXPORT_SYMBOL(iwl_clear_bits_prph);
void iwl_force_nmi(struct iwl_trans *trans)
{
- if (trans->cfg->device_family < IWL_DEVICE_FAMILY_8000) {
- iwl_write_prph(trans, DEVICE_SET_NMI_REG,
- DEVICE_SET_NMI_VAL_DRV);
- iwl_write_prph(trans, DEVICE_SET_NMI_REG,
- DEVICE_SET_NMI_VAL_HW);
- } else if (trans->cfg->device_family == IWL_DEVICE_FAMILY_A000) {
- iwl_write_prph(trans, UREG_NIC_SET_NMI_DRIVER,
- DEVICE_SET_NMI_8000_VAL);
- } else {
- iwl_write_prph(trans, DEVICE_SET_NMI_8000_REG,
- DEVICE_SET_NMI_8000_VAL);
- iwl_write_prph(trans, DEVICE_SET_NMI_REG,
- DEVICE_SET_NMI_VAL_DRV);
- }
+ if (trans->mac_cfg->device_family < IWL_DEVICE_FAMILY_9000)
+ iwl_write_prph_delay(trans, DEVICE_SET_NMI_REG,
+ DEVICE_SET_NMI_VAL_DRV, 1);
+ else if (trans->mac_cfg->device_family < IWL_DEVICE_FAMILY_AX210)
+ iwl_write_umac_prph(trans, UREG_NIC_SET_NMI_DRIVER,
+ UREG_NIC_SET_NMI_DRIVER_NMI_FROM_DRIVER);
+ else if (trans->mac_cfg->device_family < IWL_DEVICE_FAMILY_BZ)
+ iwl_write_umac_prph(trans, UREG_DOORBELL_TO_ISR6,
+ UREG_DOORBELL_TO_ISR6_NMI_BIT);
+ else
+ iwl_write32(trans, CSR_DOORBELL_VECTOR,
+ UREG_DOORBELL_TO_ISR6_NMI_BIT);
}
IWL_EXPORT_SYMBOL(iwl_force_nmi);
@@ -292,7 +254,7 @@ struct reg {
static int iwl_dump_rfh(struct iwl_trans *trans, char **buf)
{
int i, q;
- int num_q = trans->num_rx_queues;
+ int num_q = trans->info.num_rxqs;
static const u32 rfh_tbl[] = {
RFH_RXF_DMA_CFG,
RFH_GEN_CFG,
@@ -400,7 +362,7 @@ int iwl_dump_fh(struct iwl_trans *trans, char **buf)
FH_TSSR_TX_ERROR_REG
};
- if (trans->cfg->mq_rx_supported)
+ if (trans->mac_cfg->mq_rx_supported)
return iwl_dump_rfh(trans, buf);
#ifdef CONFIG_IWLWIFI_DEBUGFS
@@ -433,3 +395,45 @@ int iwl_dump_fh(struct iwl_trans *trans, char **buf)
return 0;
}
+
+int iwl_trans_activate_nic(struct iwl_trans *trans)
+{
+ return iwl_pcie_gen1_2_activate_nic(trans);
+}
+IWL_EXPORT_SYMBOL(iwl_trans_activate_nic);
+
+void iwl_trans_sync_nmi_with_addr(struct iwl_trans *trans, u32 inta_addr,
+ u32 sw_err_bit)
+{
+ unsigned long timeout = jiffies + IWL_TRANS_NMI_TIMEOUT;
+ bool interrupts_enabled = test_bit(STATUS_INT_ENABLED, &trans->status);
+
+ /* if the interrupts were already disabled, there is no point in
+ * calling iwl_disable_interrupts
+ */
+ if (interrupts_enabled)
+ iwl_trans_interrupts(trans, false);
+
+ iwl_force_nmi(trans);
+ while (time_after(timeout, jiffies)) {
+ u32 inta_hw = iwl_read32(trans, inta_addr);
+
+ /* Error detected by uCode */
+ if (inta_hw & sw_err_bit) {
+ /* Clear causes register */
+ iwl_write32(trans, inta_addr, inta_hw & sw_err_bit);
+ break;
+ }
+
+ mdelay(1);
+ }
+
+ /* enable interrupts only if there were already enabled before this
+ * function to avoid a case were the driver enable interrupts before
+ * proper configurations were made
+ */
+ if (interrupts_enabled)
+ iwl_trans_interrupts(trans, true);
+
+ iwl_trans_fw_error(trans, IWL_ERR_TYPE_NMI_FORCED);
+}
generated by cgit (git 2.34.1) at 2025-12-25 11:24:18 +0000