234 lines
6 KiB
C
234 lines
6 KiB
C
/******************************************************************************
|
|
*
|
|
* Copyright(c) 2003 - 2014 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 <linux/delay.h>
|
|
#include <linux/device.h>
|
|
#include <linux/export.h>
|
|
|
|
#include "iwl-drv.h"
|
|
#include "iwl-io.h"
|
|
#include "iwl-csr.h"
|
|
#include "iwl-debug.h"
|
|
#include "iwl-fh.h"
|
|
|
|
#define IWL_POLL_INTERVAL 10 /* microseconds */
|
|
|
|
int iwl_poll_bit(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;
|
|
udelay(IWL_POLL_INTERVAL);
|
|
t += IWL_POLL_INTERVAL;
|
|
} while (t < timeout);
|
|
|
|
return -ETIMEDOUT;
|
|
}
|
|
IWL_EXPORT_SYMBOL(iwl_poll_bit);
|
|
|
|
u32 iwl_read_direct32(struct iwl_trans *trans, u32 reg)
|
|
{
|
|
u32 value = 0x5a5a5a5a;
|
|
unsigned long flags;
|
|
if (iwl_trans_grab_nic_access(trans, false, &flags)) {
|
|
value = iwl_read32(trans, reg);
|
|
iwl_trans_release_nic_access(trans, &flags);
|
|
}
|
|
|
|
return value;
|
|
}
|
|
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, false, &flags)) {
|
|
iwl_write32(trans, reg, value);
|
|
iwl_trans_release_nic_access(trans, &flags);
|
|
}
|
|
}
|
|
IWL_EXPORT_SYMBOL(iwl_write_direct32);
|
|
|
|
int iwl_poll_direct_bit(struct iwl_trans *trans, u32 addr, u32 mask,
|
|
int timeout)
|
|
{
|
|
int t = 0;
|
|
|
|
do {
|
|
if ((iwl_read_direct32(trans, addr) & mask) == mask)
|
|
return t;
|
|
udelay(IWL_POLL_INTERVAL);
|
|
t += IWL_POLL_INTERVAL;
|
|
} while (t < timeout);
|
|
|
|
return -ETIMEDOUT;
|
|
}
|
|
IWL_EXPORT_SYMBOL(iwl_poll_direct_bit);
|
|
|
|
static inline u32 __iwl_read_prph(struct iwl_trans *trans, u32 ofs)
|
|
{
|
|
u32 val = iwl_trans_read_prph(trans, ofs);
|
|
trace_iwlwifi_dev_ioread_prph32(trans->dev, ofs, val);
|
|
return val;
|
|
}
|
|
|
|
static inline void __iwl_write_prph(struct iwl_trans *trans, u32 ofs, u32 val)
|
|
{
|
|
trace_iwlwifi_dev_iowrite_prph32(trans->dev, ofs, val);
|
|
iwl_trans_write_prph(trans, ofs, val);
|
|
}
|
|
|
|
u32 iwl_read_prph(struct iwl_trans *trans, u32 ofs)
|
|
{
|
|
unsigned long flags;
|
|
u32 val = 0x5a5a5a5a;
|
|
|
|
if (iwl_trans_grab_nic_access(trans, false, &flags)) {
|
|
val = __iwl_read_prph(trans, ofs);
|
|
iwl_trans_release_nic_access(trans, &flags);
|
|
}
|
|
return val;
|
|
}
|
|
IWL_EXPORT_SYMBOL(iwl_read_prph);
|
|
|
|
void iwl_write_prph(struct iwl_trans *trans, u32 ofs, u32 val)
|
|
{
|
|
unsigned long flags;
|
|
|
|
if (iwl_trans_grab_nic_access(trans, false, &flags)) {
|
|
__iwl_write_prph(trans, ofs, val);
|
|
iwl_trans_release_nic_access(trans, &flags);
|
|
}
|
|
}
|
|
IWL_EXPORT_SYMBOL(iwl_write_prph);
|
|
|
|
void iwl_set_bits_prph(struct iwl_trans *trans, u32 ofs, u32 mask)
|
|
{
|
|
unsigned long flags;
|
|
|
|
if (iwl_trans_grab_nic_access(trans, false, &flags)) {
|
|
__iwl_write_prph(trans, ofs,
|
|
__iwl_read_prph(trans, ofs) | mask);
|
|
iwl_trans_release_nic_access(trans, &flags);
|
|
}
|
|
}
|
|
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, false, &flags)) {
|
|
__iwl_write_prph(trans, ofs,
|
|
(__iwl_read_prph(trans, ofs) & mask) | bits);
|
|
iwl_trans_release_nic_access(trans, &flags);
|
|
}
|
|
}
|
|
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, false, &flags)) {
|
|
val = __iwl_read_prph(trans, ofs);
|
|
__iwl_write_prph(trans, ofs, (val & ~mask));
|
|
iwl_trans_release_nic_access(trans, &flags);
|
|
}
|
|
}
|
|
IWL_EXPORT_SYMBOL(iwl_clear_bits_prph);
|
|
|
|
static const char *get_fh_string(int cmd)
|
|
{
|
|
#define IWL_CMD(x) case x: return #x
|
|
switch (cmd) {
|
|
IWL_CMD(FH_RSCSR_CHNL0_STTS_WPTR_REG);
|
|
IWL_CMD(FH_RSCSR_CHNL0_RBDCB_BASE_REG);
|
|
IWL_CMD(FH_RSCSR_CHNL0_WPTR);
|
|
IWL_CMD(FH_MEM_RCSR_CHNL0_CONFIG_REG);
|
|
IWL_CMD(FH_MEM_RSSR_SHARED_CTRL_REG);
|
|
IWL_CMD(FH_MEM_RSSR_RX_STATUS_REG);
|
|
IWL_CMD(FH_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV);
|
|
IWL_CMD(FH_TSSR_TX_STATUS_REG);
|
|
IWL_CMD(FH_TSSR_TX_ERROR_REG);
|
|
default:
|
|
return "UNKNOWN";
|
|
}
|
|
#undef IWL_CMD
|
|
}
|
|
|
|
int iwl_dump_fh(struct iwl_trans *trans, char **buf)
|
|
{
|
|
int i;
|
|
static const u32 fh_tbl[] = {
|
|
FH_RSCSR_CHNL0_STTS_WPTR_REG,
|
|
FH_RSCSR_CHNL0_RBDCB_BASE_REG,
|
|
FH_RSCSR_CHNL0_WPTR,
|
|
FH_MEM_RCSR_CHNL0_CONFIG_REG,
|
|
FH_MEM_RSSR_SHARED_CTRL_REG,
|
|
FH_MEM_RSSR_RX_STATUS_REG,
|
|
FH_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV,
|
|
FH_TSSR_TX_STATUS_REG,
|
|
FH_TSSR_TX_ERROR_REG
|
|
};
|
|
|
|
#ifdef CONFIG_IWLWIFI_DEBUGFS
|
|
if (buf) {
|
|
int pos = 0;
|
|
size_t bufsz = ARRAY_SIZE(fh_tbl) * 48 + 40;
|
|
|
|
*buf = kmalloc(bufsz, GFP_KERNEL);
|
|
if (!*buf)
|
|
return -ENOMEM;
|
|
|
|
pos += scnprintf(*buf + pos, bufsz - pos,
|
|
"FH register values:\n");
|
|
|
|
for (i = 0; i < ARRAY_SIZE(fh_tbl); i++)
|
|
pos += scnprintf(*buf + pos, bufsz - pos,
|
|
" %34s: 0X%08x\n",
|
|
get_fh_string(fh_tbl[i]),
|
|
iwl_read_direct32(trans, fh_tbl[i]));
|
|
|
|
return pos;
|
|
}
|
|
#endif
|
|
|
|
IWL_ERR(trans, "FH register values:\n");
|
|
for (i = 0; i < ARRAY_SIZE(fh_tbl); i++)
|
|
IWL_ERR(trans, " %34s: 0X%08x\n",
|
|
get_fh_string(fh_tbl[i]),
|
|
iwl_read_direct32(trans, fh_tbl[i]));
|
|
|
|
return 0;
|
|
}
|