5530 lines
142 KiB
C
5530 lines
142 KiB
C
/******************************************************************************
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*
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* GPL LICENSE SUMMARY
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*
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* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
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* USA
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*
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* The full GNU General Public License is included in this distribution
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* in the file called LICENSE.GPL.
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*
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* Contact Information:
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* Intel Linux Wireless <ilw@linux.intel.com>
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* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
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*****************************************************************************/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/etherdevice.h>
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#include <linux/sched.h>
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#include <linux/slab.h>
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#include <linux/types.h>
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#include <linux/lockdep.h>
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#include <linux/init.h>
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#include <linux/pci.h>
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#include <linux/dma-mapping.h>
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#include <linux/delay.h>
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#include <linux/skbuff.h>
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#include <net/mac80211.h>
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#include "common.h"
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int
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_il_poll_bit(struct il_priv *il, u32 addr, u32 bits, u32 mask, int timeout)
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{
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const int interval = 10; /* microseconds */
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int t = 0;
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do {
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if ((_il_rd(il, addr) & mask) == (bits & mask))
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return t;
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udelay(interval);
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t += interval;
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} while (t < timeout);
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return -ETIMEDOUT;
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}
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EXPORT_SYMBOL(_il_poll_bit);
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void
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il_set_bit(struct il_priv *p, u32 r, u32 m)
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{
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unsigned long reg_flags;
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spin_lock_irqsave(&p->reg_lock, reg_flags);
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_il_set_bit(p, r, m);
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spin_unlock_irqrestore(&p->reg_lock, reg_flags);
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}
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EXPORT_SYMBOL(il_set_bit);
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void
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il_clear_bit(struct il_priv *p, u32 r, u32 m)
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{
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unsigned long reg_flags;
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spin_lock_irqsave(&p->reg_lock, reg_flags);
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_il_clear_bit(p, r, m);
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spin_unlock_irqrestore(&p->reg_lock, reg_flags);
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}
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EXPORT_SYMBOL(il_clear_bit);
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bool
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_il_grab_nic_access(struct il_priv *il)
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{
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int ret;
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u32 val;
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/* this bit wakes up the NIC */
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_il_set_bit(il, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
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/*
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* These bits say the device is running, and should keep running for
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* at least a short while (at least as long as MAC_ACCESS_REQ stays 1),
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* but they do not indicate that embedded SRAM is restored yet;
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* 3945 and 4965 have volatile SRAM, and must save/restore contents
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* to/from host DRAM when sleeping/waking for power-saving.
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* Each direction takes approximately 1/4 millisecond; with this
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* overhead, it's a good idea to grab and hold MAC_ACCESS_REQUEST if a
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* series of register accesses are expected (e.g. reading Event Log),
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* to keep device from sleeping.
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*
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* CSR_UCODE_DRV_GP1 register bit MAC_SLEEP == 0 indicates that
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* SRAM is okay/restored. We don't check that here because this call
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* is just for hardware register access; but GP1 MAC_SLEEP check is a
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* good idea before accessing 3945/4965 SRAM (e.g. reading Event Log).
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*
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*/
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ret =
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_il_poll_bit(il, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_VAL_MAC_ACCESS_EN,
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(CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY |
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CSR_GP_CNTRL_REG_FLAG_GOING_TO_SLEEP), 15000);
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if (unlikely(ret < 0)) {
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val = _il_rd(il, CSR_GP_CNTRL);
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WARN_ONCE(1, "Timeout waiting for ucode processor access "
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"(CSR_GP_CNTRL 0x%08x)\n", val);
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_il_wr(il, CSR_RESET, CSR_RESET_REG_FLAG_FORCE_NMI);
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return false;
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}
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return true;
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}
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EXPORT_SYMBOL_GPL(_il_grab_nic_access);
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int
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il_poll_bit(struct il_priv *il, u32 addr, u32 mask, int timeout)
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{
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const int interval = 10; /* microseconds */
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int t = 0;
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do {
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if ((il_rd(il, addr) & mask) == mask)
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return t;
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udelay(interval);
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t += interval;
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} while (t < timeout);
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return -ETIMEDOUT;
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}
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EXPORT_SYMBOL(il_poll_bit);
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u32
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il_rd_prph(struct il_priv *il, u32 reg)
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{
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unsigned long reg_flags;
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u32 val;
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spin_lock_irqsave(&il->reg_lock, reg_flags);
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_il_grab_nic_access(il);
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val = _il_rd_prph(il, reg);
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_il_release_nic_access(il);
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spin_unlock_irqrestore(&il->reg_lock, reg_flags);
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return val;
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}
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EXPORT_SYMBOL(il_rd_prph);
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void
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il_wr_prph(struct il_priv *il, u32 addr, u32 val)
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{
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unsigned long reg_flags;
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spin_lock_irqsave(&il->reg_lock, reg_flags);
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if (likely(_il_grab_nic_access(il))) {
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_il_wr_prph(il, addr, val);
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_il_release_nic_access(il);
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}
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spin_unlock_irqrestore(&il->reg_lock, reg_flags);
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}
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EXPORT_SYMBOL(il_wr_prph);
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u32
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il_read_targ_mem(struct il_priv *il, u32 addr)
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{
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unsigned long reg_flags;
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u32 value;
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spin_lock_irqsave(&il->reg_lock, reg_flags);
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_il_grab_nic_access(il);
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_il_wr(il, HBUS_TARG_MEM_RADDR, addr);
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value = _il_rd(il, HBUS_TARG_MEM_RDAT);
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_il_release_nic_access(il);
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spin_unlock_irqrestore(&il->reg_lock, reg_flags);
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return value;
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}
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EXPORT_SYMBOL(il_read_targ_mem);
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void
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il_write_targ_mem(struct il_priv *il, u32 addr, u32 val)
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{
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unsigned long reg_flags;
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spin_lock_irqsave(&il->reg_lock, reg_flags);
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if (likely(_il_grab_nic_access(il))) {
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_il_wr(il, HBUS_TARG_MEM_WADDR, addr);
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_il_wr(il, HBUS_TARG_MEM_WDAT, val);
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_il_release_nic_access(il);
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}
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spin_unlock_irqrestore(&il->reg_lock, reg_flags);
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}
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EXPORT_SYMBOL(il_write_targ_mem);
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const char *
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il_get_cmd_string(u8 cmd)
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{
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switch (cmd) {
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IL_CMD(N_ALIVE);
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IL_CMD(N_ERROR);
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IL_CMD(C_RXON);
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IL_CMD(C_RXON_ASSOC);
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IL_CMD(C_QOS_PARAM);
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IL_CMD(C_RXON_TIMING);
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IL_CMD(C_ADD_STA);
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IL_CMD(C_REM_STA);
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IL_CMD(C_WEPKEY);
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IL_CMD(N_3945_RX);
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IL_CMD(C_TX);
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IL_CMD(C_RATE_SCALE);
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IL_CMD(C_LEDS);
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IL_CMD(C_TX_LINK_QUALITY_CMD);
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IL_CMD(C_CHANNEL_SWITCH);
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IL_CMD(N_CHANNEL_SWITCH);
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IL_CMD(C_SPECTRUM_MEASUREMENT);
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IL_CMD(N_SPECTRUM_MEASUREMENT);
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IL_CMD(C_POWER_TBL);
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IL_CMD(N_PM_SLEEP);
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IL_CMD(N_PM_DEBUG_STATS);
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IL_CMD(C_SCAN);
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IL_CMD(C_SCAN_ABORT);
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IL_CMD(N_SCAN_START);
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IL_CMD(N_SCAN_RESULTS);
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IL_CMD(N_SCAN_COMPLETE);
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IL_CMD(N_BEACON);
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IL_CMD(C_TX_BEACON);
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IL_CMD(C_TX_PWR_TBL);
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IL_CMD(C_BT_CONFIG);
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IL_CMD(C_STATS);
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IL_CMD(N_STATS);
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IL_CMD(N_CARD_STATE);
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IL_CMD(N_MISSED_BEACONS);
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IL_CMD(C_CT_KILL_CONFIG);
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IL_CMD(C_SENSITIVITY);
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IL_CMD(C_PHY_CALIBRATION);
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IL_CMD(N_RX_PHY);
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IL_CMD(N_RX_MPDU);
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IL_CMD(N_RX);
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IL_CMD(N_COMPRESSED_BA);
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default:
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return "UNKNOWN";
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}
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}
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EXPORT_SYMBOL(il_get_cmd_string);
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#define HOST_COMPLETE_TIMEOUT (HZ / 2)
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static void
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il_generic_cmd_callback(struct il_priv *il, struct il_device_cmd *cmd,
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struct il_rx_pkt *pkt)
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{
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if (pkt->hdr.flags & IL_CMD_FAILED_MSK) {
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IL_ERR("Bad return from %s (0x%08X)\n",
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il_get_cmd_string(cmd->hdr.cmd), pkt->hdr.flags);
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return;
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}
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#ifdef CONFIG_IWLEGACY_DEBUG
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switch (cmd->hdr.cmd) {
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case C_TX_LINK_QUALITY_CMD:
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case C_SENSITIVITY:
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D_HC_DUMP("back from %s (0x%08X)\n",
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il_get_cmd_string(cmd->hdr.cmd), pkt->hdr.flags);
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break;
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default:
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D_HC("back from %s (0x%08X)\n", il_get_cmd_string(cmd->hdr.cmd),
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pkt->hdr.flags);
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}
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#endif
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}
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static int
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il_send_cmd_async(struct il_priv *il, struct il_host_cmd *cmd)
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{
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int ret;
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BUG_ON(!(cmd->flags & CMD_ASYNC));
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/* An asynchronous command can not expect an SKB to be set. */
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BUG_ON(cmd->flags & CMD_WANT_SKB);
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/* Assign a generic callback if one is not provided */
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if (!cmd->callback)
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cmd->callback = il_generic_cmd_callback;
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if (test_bit(S_EXIT_PENDING, &il->status))
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return -EBUSY;
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ret = il_enqueue_hcmd(il, cmd);
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if (ret < 0) {
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IL_ERR("Error sending %s: enqueue_hcmd failed: %d\n",
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il_get_cmd_string(cmd->id), ret);
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return ret;
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}
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return 0;
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}
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int
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il_send_cmd_sync(struct il_priv *il, struct il_host_cmd *cmd)
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{
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int cmd_idx;
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int ret;
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lockdep_assert_held(&il->mutex);
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BUG_ON(cmd->flags & CMD_ASYNC);
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/* A synchronous command can not have a callback set. */
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BUG_ON(cmd->callback);
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D_INFO("Attempting to send sync command %s\n",
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il_get_cmd_string(cmd->id));
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set_bit(S_HCMD_ACTIVE, &il->status);
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D_INFO("Setting HCMD_ACTIVE for command %s\n",
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il_get_cmd_string(cmd->id));
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cmd_idx = il_enqueue_hcmd(il, cmd);
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if (cmd_idx < 0) {
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ret = cmd_idx;
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IL_ERR("Error sending %s: enqueue_hcmd failed: %d\n",
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il_get_cmd_string(cmd->id), ret);
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goto out;
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}
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ret = wait_event_timeout(il->wait_command_queue,
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!test_bit(S_HCMD_ACTIVE, &il->status),
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HOST_COMPLETE_TIMEOUT);
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if (!ret) {
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if (test_bit(S_HCMD_ACTIVE, &il->status)) {
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IL_ERR("Error sending %s: time out after %dms.\n",
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il_get_cmd_string(cmd->id),
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jiffies_to_msecs(HOST_COMPLETE_TIMEOUT));
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clear_bit(S_HCMD_ACTIVE, &il->status);
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D_INFO("Clearing HCMD_ACTIVE for command %s\n",
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il_get_cmd_string(cmd->id));
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ret = -ETIMEDOUT;
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goto cancel;
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}
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}
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if (test_bit(S_RFKILL, &il->status)) {
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IL_ERR("Command %s aborted: RF KILL Switch\n",
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il_get_cmd_string(cmd->id));
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ret = -ECANCELED;
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goto fail;
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}
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if (test_bit(S_FW_ERROR, &il->status)) {
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IL_ERR("Command %s failed: FW Error\n",
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il_get_cmd_string(cmd->id));
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ret = -EIO;
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goto fail;
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}
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if ((cmd->flags & CMD_WANT_SKB) && !cmd->reply_page) {
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IL_ERR("Error: Response NULL in '%s'\n",
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il_get_cmd_string(cmd->id));
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ret = -EIO;
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goto cancel;
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}
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ret = 0;
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goto out;
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cancel:
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if (cmd->flags & CMD_WANT_SKB) {
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/*
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* Cancel the CMD_WANT_SKB flag for the cmd in the
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* TX cmd queue. Otherwise in case the cmd comes
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* in later, it will possibly set an invalid
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* address (cmd->meta.source).
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*/
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il->txq[il->cmd_queue].meta[cmd_idx].flags &= ~CMD_WANT_SKB;
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}
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fail:
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if (cmd->reply_page) {
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il_free_pages(il, cmd->reply_page);
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cmd->reply_page = 0;
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}
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out:
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return ret;
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}
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EXPORT_SYMBOL(il_send_cmd_sync);
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int
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il_send_cmd(struct il_priv *il, struct il_host_cmd *cmd)
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{
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if (cmd->flags & CMD_ASYNC)
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return il_send_cmd_async(il, cmd);
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return il_send_cmd_sync(il, cmd);
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}
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EXPORT_SYMBOL(il_send_cmd);
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int
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il_send_cmd_pdu(struct il_priv *il, u8 id, u16 len, const void *data)
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{
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struct il_host_cmd cmd = {
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.id = id,
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.len = len,
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.data = data,
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};
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return il_send_cmd_sync(il, &cmd);
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}
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EXPORT_SYMBOL(il_send_cmd_pdu);
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int
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il_send_cmd_pdu_async(struct il_priv *il, u8 id, u16 len, const void *data,
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void (*callback) (struct il_priv *il,
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struct il_device_cmd *cmd,
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struct il_rx_pkt *pkt))
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{
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struct il_host_cmd cmd = {
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.id = id,
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.len = len,
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.data = data,
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};
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cmd.flags |= CMD_ASYNC;
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cmd.callback = callback;
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return il_send_cmd_async(il, &cmd);
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}
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EXPORT_SYMBOL(il_send_cmd_pdu_async);
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/* default: IL_LED_BLINK(0) using blinking idx table */
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static int led_mode;
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module_param(led_mode, int, S_IRUGO);
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MODULE_PARM_DESC(led_mode,
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"0=system default, " "1=On(RF On)/Off(RF Off), 2=blinking");
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/* Throughput OFF time(ms) ON time (ms)
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* >300 25 25
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* >200 to 300 40 40
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* >100 to 200 55 55
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* >70 to 100 65 65
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* >50 to 70 75 75
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* >20 to 50 85 85
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* >10 to 20 95 95
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* >5 to 10 110 110
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* >1 to 5 130 130
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* >0 to 1 167 167
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* <=0 SOLID ON
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*/
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static const struct ieee80211_tpt_blink il_blink[] = {
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{.throughput = 0, .blink_time = 334},
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{.throughput = 1 * 1024 - 1, .blink_time = 260},
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{.throughput = 5 * 1024 - 1, .blink_time = 220},
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{.throughput = 10 * 1024 - 1, .blink_time = 190},
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{.throughput = 20 * 1024 - 1, .blink_time = 170},
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{.throughput = 50 * 1024 - 1, .blink_time = 150},
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{.throughput = 70 * 1024 - 1, .blink_time = 130},
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{.throughput = 100 * 1024 - 1, .blink_time = 110},
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{.throughput = 200 * 1024 - 1, .blink_time = 80},
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{.throughput = 300 * 1024 - 1, .blink_time = 50},
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};
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|
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/*
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* Adjust led blink rate to compensate on a MAC Clock difference on every HW
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* Led blink rate analysis showed an average deviation of 0% on 3945,
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* 5% on 4965 HW.
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* Need to compensate on the led on/off time per HW according to the deviation
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* to achieve the desired led frequency
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* The calculation is: (100-averageDeviation)/100 * blinkTime
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* For code efficiency the calculation will be:
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* compensation = (100 - averageDeviation) * 64 / 100
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* NewBlinkTime = (compensation * BlinkTime) / 64
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*/
|
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static inline u8
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il_blink_compensation(struct il_priv *il, u8 time, u16 compensation)
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{
|
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if (!compensation) {
|
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IL_ERR("undefined blink compensation: "
|
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"use pre-defined blinking time\n");
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return time;
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}
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return (u8) ((time * compensation) >> 6);
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}
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|
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/* Set led pattern command */
|
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static int
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il_led_cmd(struct il_priv *il, unsigned long on, unsigned long off)
|
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{
|
|
struct il_led_cmd led_cmd = {
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.id = IL_LED_LINK,
|
|
.interval = IL_DEF_LED_INTRVL
|
|
};
|
|
int ret;
|
|
|
|
if (!test_bit(S_READY, &il->status))
|
|
return -EBUSY;
|
|
|
|
if (il->blink_on == on && il->blink_off == off)
|
|
return 0;
|
|
|
|
if (off == 0) {
|
|
/* led is SOLID_ON */
|
|
on = IL_LED_SOLID;
|
|
}
|
|
|
|
D_LED("Led blink time compensation=%u\n",
|
|
il->cfg->led_compensation);
|
|
led_cmd.on =
|
|
il_blink_compensation(il, on,
|
|
il->cfg->led_compensation);
|
|
led_cmd.off =
|
|
il_blink_compensation(il, off,
|
|
il->cfg->led_compensation);
|
|
|
|
ret = il->ops->send_led_cmd(il, &led_cmd);
|
|
if (!ret) {
|
|
il->blink_on = on;
|
|
il->blink_off = off;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static void
|
|
il_led_brightness_set(struct led_classdev *led_cdev,
|
|
enum led_brightness brightness)
|
|
{
|
|
struct il_priv *il = container_of(led_cdev, struct il_priv, led);
|
|
unsigned long on = 0;
|
|
|
|
if (brightness > 0)
|
|
on = IL_LED_SOLID;
|
|
|
|
il_led_cmd(il, on, 0);
|
|
}
|
|
|
|
static int
|
|
il_led_blink_set(struct led_classdev *led_cdev, unsigned long *delay_on,
|
|
unsigned long *delay_off)
|
|
{
|
|
struct il_priv *il = container_of(led_cdev, struct il_priv, led);
|
|
|
|
return il_led_cmd(il, *delay_on, *delay_off);
|
|
}
|
|
|
|
void
|
|
il_leds_init(struct il_priv *il)
|
|
{
|
|
int mode = led_mode;
|
|
int ret;
|
|
|
|
if (mode == IL_LED_DEFAULT)
|
|
mode = il->cfg->led_mode;
|
|
|
|
il->led.name =
|
|
kasprintf(GFP_KERNEL, "%s-led", wiphy_name(il->hw->wiphy));
|
|
il->led.brightness_set = il_led_brightness_set;
|
|
il->led.blink_set = il_led_blink_set;
|
|
il->led.max_brightness = 1;
|
|
|
|
switch (mode) {
|
|
case IL_LED_DEFAULT:
|
|
WARN_ON(1);
|
|
break;
|
|
case IL_LED_BLINK:
|
|
il->led.default_trigger =
|
|
ieee80211_create_tpt_led_trigger(il->hw,
|
|
IEEE80211_TPT_LEDTRIG_FL_CONNECTED,
|
|
il_blink,
|
|
ARRAY_SIZE(il_blink));
|
|
break;
|
|
case IL_LED_RF_STATE:
|
|
il->led.default_trigger = ieee80211_get_radio_led_name(il->hw);
|
|
break;
|
|
}
|
|
|
|
ret = led_classdev_register(&il->pci_dev->dev, &il->led);
|
|
if (ret) {
|
|
kfree(il->led.name);
|
|
return;
|
|
}
|
|
|
|
il->led_registered = true;
|
|
}
|
|
EXPORT_SYMBOL(il_leds_init);
|
|
|
|
void
|
|
il_leds_exit(struct il_priv *il)
|
|
{
|
|
if (!il->led_registered)
|
|
return;
|
|
|
|
led_classdev_unregister(&il->led);
|
|
kfree(il->led.name);
|
|
}
|
|
EXPORT_SYMBOL(il_leds_exit);
|
|
|
|
/************************** EEPROM BANDS ****************************
|
|
*
|
|
* The il_eeprom_band definitions below provide the mapping from the
|
|
* EEPROM contents to the specific channel number supported for each
|
|
* band.
|
|
*
|
|
* For example, il_priv->eeprom.band_3_channels[4] from the band_3
|
|
* definition below maps to physical channel 42 in the 5.2GHz spectrum.
|
|
* The specific geography and calibration information for that channel
|
|
* is contained in the eeprom map itself.
|
|
*
|
|
* During init, we copy the eeprom information and channel map
|
|
* information into il->channel_info_24/52 and il->channel_map_24/52
|
|
*
|
|
* channel_map_24/52 provides the idx in the channel_info array for a
|
|
* given channel. We have to have two separate maps as there is channel
|
|
* overlap with the 2.4GHz and 5.2GHz spectrum as seen in band_1 and
|
|
* band_2
|
|
*
|
|
* A value of 0xff stored in the channel_map indicates that the channel
|
|
* is not supported by the hardware at all.
|
|
*
|
|
* A value of 0xfe in the channel_map indicates that the channel is not
|
|
* valid for Tx with the current hardware. This means that
|
|
* while the system can tune and receive on a given channel, it may not
|
|
* be able to associate or transmit any frames on that
|
|
* channel. There is no corresponding channel information for that
|
|
* entry.
|
|
*
|
|
*********************************************************************/
|
|
|
|
/* 2.4 GHz */
|
|
const u8 il_eeprom_band_1[14] = {
|
|
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
|
|
};
|
|
|
|
/* 5.2 GHz bands */
|
|
static const u8 il_eeprom_band_2[] = { /* 4915-5080MHz */
|
|
183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16
|
|
};
|
|
|
|
static const u8 il_eeprom_band_3[] = { /* 5170-5320MHz */
|
|
34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64
|
|
};
|
|
|
|
static const u8 il_eeprom_band_4[] = { /* 5500-5700MHz */
|
|
100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
|
|
};
|
|
|
|
static const u8 il_eeprom_band_5[] = { /* 5725-5825MHz */
|
|
145, 149, 153, 157, 161, 165
|
|
};
|
|
|
|
static const u8 il_eeprom_band_6[] = { /* 2.4 ht40 channel */
|
|
1, 2, 3, 4, 5, 6, 7
|
|
};
|
|
|
|
static const u8 il_eeprom_band_7[] = { /* 5.2 ht40 channel */
|
|
36, 44, 52, 60, 100, 108, 116, 124, 132, 149, 157
|
|
};
|
|
|
|
/******************************************************************************
|
|
*
|
|
* EEPROM related functions
|
|
*
|
|
******************************************************************************/
|
|
|
|
static int
|
|
il_eeprom_verify_signature(struct il_priv *il)
|
|
{
|
|
u32 gp = _il_rd(il, CSR_EEPROM_GP) & CSR_EEPROM_GP_VALID_MSK;
|
|
int ret = 0;
|
|
|
|
D_EEPROM("EEPROM signature=0x%08x\n", gp);
|
|
switch (gp) {
|
|
case CSR_EEPROM_GP_GOOD_SIG_EEP_LESS_THAN_4K:
|
|
case CSR_EEPROM_GP_GOOD_SIG_EEP_MORE_THAN_4K:
|
|
break;
|
|
default:
|
|
IL_ERR("bad EEPROM signature," "EEPROM_GP=0x%08x\n", gp);
|
|
ret = -ENOENT;
|
|
break;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
const u8 *
|
|
il_eeprom_query_addr(const struct il_priv *il, size_t offset)
|
|
{
|
|
BUG_ON(offset >= il->cfg->eeprom_size);
|
|
return &il->eeprom[offset];
|
|
}
|
|
EXPORT_SYMBOL(il_eeprom_query_addr);
|
|
|
|
u16
|
|
il_eeprom_query16(const struct il_priv *il, size_t offset)
|
|
{
|
|
if (!il->eeprom)
|
|
return 0;
|
|
return (u16) il->eeprom[offset] | ((u16) il->eeprom[offset + 1] << 8);
|
|
}
|
|
EXPORT_SYMBOL(il_eeprom_query16);
|
|
|
|
/**
|
|
* il_eeprom_init - read EEPROM contents
|
|
*
|
|
* Load the EEPROM contents from adapter into il->eeprom
|
|
*
|
|
* NOTE: This routine uses the non-debug IO access functions.
|
|
*/
|
|
int
|
|
il_eeprom_init(struct il_priv *il)
|
|
{
|
|
__le16 *e;
|
|
u32 gp = _il_rd(il, CSR_EEPROM_GP);
|
|
int sz;
|
|
int ret;
|
|
u16 addr;
|
|
|
|
/* allocate eeprom */
|
|
sz = il->cfg->eeprom_size;
|
|
D_EEPROM("NVM size = %d\n", sz);
|
|
il->eeprom = kzalloc(sz, GFP_KERNEL);
|
|
if (!il->eeprom) {
|
|
ret = -ENOMEM;
|
|
goto alloc_err;
|
|
}
|
|
e = (__le16 *) il->eeprom;
|
|
|
|
il->ops->apm_init(il);
|
|
|
|
ret = il_eeprom_verify_signature(il);
|
|
if (ret < 0) {
|
|
IL_ERR("EEPROM not found, EEPROM_GP=0x%08x\n", gp);
|
|
ret = -ENOENT;
|
|
goto err;
|
|
}
|
|
|
|
/* Make sure driver (instead of uCode) is allowed to read EEPROM */
|
|
ret = il->ops->eeprom_acquire_semaphore(il);
|
|
if (ret < 0) {
|
|
IL_ERR("Failed to acquire EEPROM semaphore.\n");
|
|
ret = -ENOENT;
|
|
goto err;
|
|
}
|
|
|
|
/* eeprom is an array of 16bit values */
|
|
for (addr = 0; addr < sz; addr += sizeof(u16)) {
|
|
u32 r;
|
|
|
|
_il_wr(il, CSR_EEPROM_REG,
|
|
CSR_EEPROM_REG_MSK_ADDR & (addr << 1));
|
|
|
|
ret =
|
|
_il_poll_bit(il, CSR_EEPROM_REG,
|
|
CSR_EEPROM_REG_READ_VALID_MSK,
|
|
CSR_EEPROM_REG_READ_VALID_MSK,
|
|
IL_EEPROM_ACCESS_TIMEOUT);
|
|
if (ret < 0) {
|
|
IL_ERR("Time out reading EEPROM[%d]\n", addr);
|
|
goto done;
|
|
}
|
|
r = _il_rd(il, CSR_EEPROM_REG);
|
|
e[addr / 2] = cpu_to_le16(r >> 16);
|
|
}
|
|
|
|
D_EEPROM("NVM Type: %s, version: 0x%x\n", "EEPROM",
|
|
il_eeprom_query16(il, EEPROM_VERSION));
|
|
|
|
ret = 0;
|
|
done:
|
|
il->ops->eeprom_release_semaphore(il);
|
|
|
|
err:
|
|
if (ret)
|
|
il_eeprom_free(il);
|
|
/* Reset chip to save power until we load uCode during "up". */
|
|
il_apm_stop(il);
|
|
alloc_err:
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(il_eeprom_init);
|
|
|
|
void
|
|
il_eeprom_free(struct il_priv *il)
|
|
{
|
|
kfree(il->eeprom);
|
|
il->eeprom = NULL;
|
|
}
|
|
EXPORT_SYMBOL(il_eeprom_free);
|
|
|
|
static void
|
|
il_init_band_reference(const struct il_priv *il, int eep_band,
|
|
int *eeprom_ch_count,
|
|
const struct il_eeprom_channel **eeprom_ch_info,
|
|
const u8 **eeprom_ch_idx)
|
|
{
|
|
u32 offset = il->cfg->regulatory_bands[eep_band - 1];
|
|
|
|
switch (eep_band) {
|
|
case 1: /* 2.4GHz band */
|
|
*eeprom_ch_count = ARRAY_SIZE(il_eeprom_band_1);
|
|
*eeprom_ch_info =
|
|
(struct il_eeprom_channel *)il_eeprom_query_addr(il,
|
|
offset);
|
|
*eeprom_ch_idx = il_eeprom_band_1;
|
|
break;
|
|
case 2: /* 4.9GHz band */
|
|
*eeprom_ch_count = ARRAY_SIZE(il_eeprom_band_2);
|
|
*eeprom_ch_info =
|
|
(struct il_eeprom_channel *)il_eeprom_query_addr(il,
|
|
offset);
|
|
*eeprom_ch_idx = il_eeprom_band_2;
|
|
break;
|
|
case 3: /* 5.2GHz band */
|
|
*eeprom_ch_count = ARRAY_SIZE(il_eeprom_band_3);
|
|
*eeprom_ch_info =
|
|
(struct il_eeprom_channel *)il_eeprom_query_addr(il,
|
|
offset);
|
|
*eeprom_ch_idx = il_eeprom_band_3;
|
|
break;
|
|
case 4: /* 5.5GHz band */
|
|
*eeprom_ch_count = ARRAY_SIZE(il_eeprom_band_4);
|
|
*eeprom_ch_info =
|
|
(struct il_eeprom_channel *)il_eeprom_query_addr(il,
|
|
offset);
|
|
*eeprom_ch_idx = il_eeprom_band_4;
|
|
break;
|
|
case 5: /* 5.7GHz band */
|
|
*eeprom_ch_count = ARRAY_SIZE(il_eeprom_band_5);
|
|
*eeprom_ch_info =
|
|
(struct il_eeprom_channel *)il_eeprom_query_addr(il,
|
|
offset);
|
|
*eeprom_ch_idx = il_eeprom_band_5;
|
|
break;
|
|
case 6: /* 2.4GHz ht40 channels */
|
|
*eeprom_ch_count = ARRAY_SIZE(il_eeprom_band_6);
|
|
*eeprom_ch_info =
|
|
(struct il_eeprom_channel *)il_eeprom_query_addr(il,
|
|
offset);
|
|
*eeprom_ch_idx = il_eeprom_band_6;
|
|
break;
|
|
case 7: /* 5 GHz ht40 channels */
|
|
*eeprom_ch_count = ARRAY_SIZE(il_eeprom_band_7);
|
|
*eeprom_ch_info =
|
|
(struct il_eeprom_channel *)il_eeprom_query_addr(il,
|
|
offset);
|
|
*eeprom_ch_idx = il_eeprom_band_7;
|
|
break;
|
|
default:
|
|
BUG();
|
|
}
|
|
}
|
|
|
|
#define CHECK_AND_PRINT(x) ((eeprom_ch->flags & EEPROM_CHANNEL_##x) \
|
|
? # x " " : "")
|
|
/**
|
|
* il_mod_ht40_chan_info - Copy ht40 channel info into driver's il.
|
|
*
|
|
* Does not set up a command, or touch hardware.
|
|
*/
|
|
static int
|
|
il_mod_ht40_chan_info(struct il_priv *il, enum ieee80211_band band, u16 channel,
|
|
const struct il_eeprom_channel *eeprom_ch,
|
|
u8 clear_ht40_extension_channel)
|
|
{
|
|
struct il_channel_info *ch_info;
|
|
|
|
ch_info =
|
|
(struct il_channel_info *)il_get_channel_info(il, band, channel);
|
|
|
|
if (!il_is_channel_valid(ch_info))
|
|
return -1;
|
|
|
|
D_EEPROM("HT40 Ch. %d [%sGHz] %s%s%s%s%s(0x%02x %ddBm):"
|
|
" Ad-Hoc %ssupported\n", ch_info->channel,
|
|
il_is_channel_a_band(ch_info) ? "5.2" : "2.4",
|
|
CHECK_AND_PRINT(IBSS), CHECK_AND_PRINT(ACTIVE),
|
|
CHECK_AND_PRINT(RADAR), CHECK_AND_PRINT(WIDE),
|
|
CHECK_AND_PRINT(DFS), eeprom_ch->flags,
|
|
eeprom_ch->max_power_avg,
|
|
((eeprom_ch->flags & EEPROM_CHANNEL_IBSS) &&
|
|
!(eeprom_ch->flags & EEPROM_CHANNEL_RADAR)) ? "" : "not ");
|
|
|
|
ch_info->ht40_eeprom = *eeprom_ch;
|
|
ch_info->ht40_max_power_avg = eeprom_ch->max_power_avg;
|
|
ch_info->ht40_flags = eeprom_ch->flags;
|
|
if (eeprom_ch->flags & EEPROM_CHANNEL_VALID)
|
|
ch_info->ht40_extension_channel &=
|
|
~clear_ht40_extension_channel;
|
|
|
|
return 0;
|
|
}
|
|
|
|
#define CHECK_AND_PRINT_I(x) ((eeprom_ch_info[ch].flags & EEPROM_CHANNEL_##x) \
|
|
? # x " " : "")
|
|
|
|
/**
|
|
* il_init_channel_map - Set up driver's info for all possible channels
|
|
*/
|
|
int
|
|
il_init_channel_map(struct il_priv *il)
|
|
{
|
|
int eeprom_ch_count = 0;
|
|
const u8 *eeprom_ch_idx = NULL;
|
|
const struct il_eeprom_channel *eeprom_ch_info = NULL;
|
|
int band, ch;
|
|
struct il_channel_info *ch_info;
|
|
|
|
if (il->channel_count) {
|
|
D_EEPROM("Channel map already initialized.\n");
|
|
return 0;
|
|
}
|
|
|
|
D_EEPROM("Initializing regulatory info from EEPROM\n");
|
|
|
|
il->channel_count =
|
|
ARRAY_SIZE(il_eeprom_band_1) + ARRAY_SIZE(il_eeprom_band_2) +
|
|
ARRAY_SIZE(il_eeprom_band_3) + ARRAY_SIZE(il_eeprom_band_4) +
|
|
ARRAY_SIZE(il_eeprom_band_5);
|
|
|
|
D_EEPROM("Parsing data for %d channels.\n", il->channel_count);
|
|
|
|
il->channel_info =
|
|
kzalloc(sizeof(struct il_channel_info) * il->channel_count,
|
|
GFP_KERNEL);
|
|
if (!il->channel_info) {
|
|
IL_ERR("Could not allocate channel_info\n");
|
|
il->channel_count = 0;
|
|
return -ENOMEM;
|
|
}
|
|
|
|
ch_info = il->channel_info;
|
|
|
|
/* Loop through the 5 EEPROM bands adding them in order to the
|
|
* channel map we maintain (that contains additional information than
|
|
* what just in the EEPROM) */
|
|
for (band = 1; band <= 5; band++) {
|
|
|
|
il_init_band_reference(il, band, &eeprom_ch_count,
|
|
&eeprom_ch_info, &eeprom_ch_idx);
|
|
|
|
/* Loop through each band adding each of the channels */
|
|
for (ch = 0; ch < eeprom_ch_count; ch++) {
|
|
ch_info->channel = eeprom_ch_idx[ch];
|
|
ch_info->band =
|
|
(band ==
|
|
1) ? IEEE80211_BAND_2GHZ : IEEE80211_BAND_5GHZ;
|
|
|
|
/* permanently store EEPROM's channel regulatory flags
|
|
* and max power in channel info database. */
|
|
ch_info->eeprom = eeprom_ch_info[ch];
|
|
|
|
/* Copy the run-time flags so they are there even on
|
|
* invalid channels */
|
|
ch_info->flags = eeprom_ch_info[ch].flags;
|
|
/* First write that ht40 is not enabled, and then enable
|
|
* one by one */
|
|
ch_info->ht40_extension_channel =
|
|
IEEE80211_CHAN_NO_HT40;
|
|
|
|
if (!(il_is_channel_valid(ch_info))) {
|
|
D_EEPROM("Ch. %d Flags %x [%sGHz] - "
|
|
"No traffic\n", ch_info->channel,
|
|
ch_info->flags,
|
|
il_is_channel_a_band(ch_info) ? "5.2" :
|
|
"2.4");
|
|
ch_info++;
|
|
continue;
|
|
}
|
|
|
|
/* Initialize regulatory-based run-time data */
|
|
ch_info->max_power_avg = ch_info->curr_txpow =
|
|
eeprom_ch_info[ch].max_power_avg;
|
|
ch_info->scan_power = eeprom_ch_info[ch].max_power_avg;
|
|
ch_info->min_power = 0;
|
|
|
|
D_EEPROM("Ch. %d [%sGHz] " "%s%s%s%s%s%s(0x%02x %ddBm):"
|
|
" Ad-Hoc %ssupported\n", ch_info->channel,
|
|
il_is_channel_a_band(ch_info) ? "5.2" : "2.4",
|
|
CHECK_AND_PRINT_I(VALID),
|
|
CHECK_AND_PRINT_I(IBSS),
|
|
CHECK_AND_PRINT_I(ACTIVE),
|
|
CHECK_AND_PRINT_I(RADAR),
|
|
CHECK_AND_PRINT_I(WIDE),
|
|
CHECK_AND_PRINT_I(DFS),
|
|
eeprom_ch_info[ch].flags,
|
|
eeprom_ch_info[ch].max_power_avg,
|
|
((eeprom_ch_info[ch].
|
|
flags & EEPROM_CHANNEL_IBSS) &&
|
|
!(eeprom_ch_info[ch].
|
|
flags & EEPROM_CHANNEL_RADAR)) ? "" :
|
|
"not ");
|
|
|
|
ch_info++;
|
|
}
|
|
}
|
|
|
|
/* Check if we do have HT40 channels */
|
|
if (il->cfg->regulatory_bands[5] == EEPROM_REGULATORY_BAND_NO_HT40 &&
|
|
il->cfg->regulatory_bands[6] == EEPROM_REGULATORY_BAND_NO_HT40)
|
|
return 0;
|
|
|
|
/* Two additional EEPROM bands for 2.4 and 5 GHz HT40 channels */
|
|
for (band = 6; band <= 7; band++) {
|
|
enum ieee80211_band ieeeband;
|
|
|
|
il_init_band_reference(il, band, &eeprom_ch_count,
|
|
&eeprom_ch_info, &eeprom_ch_idx);
|
|
|
|
/* EEPROM band 6 is 2.4, band 7 is 5 GHz */
|
|
ieeeband =
|
|
(band == 6) ? IEEE80211_BAND_2GHZ : IEEE80211_BAND_5GHZ;
|
|
|
|
/* Loop through each band adding each of the channels */
|
|
for (ch = 0; ch < eeprom_ch_count; ch++) {
|
|
/* Set up driver's info for lower half */
|
|
il_mod_ht40_chan_info(il, ieeeband, eeprom_ch_idx[ch],
|
|
&eeprom_ch_info[ch],
|
|
IEEE80211_CHAN_NO_HT40PLUS);
|
|
|
|
/* Set up driver's info for upper half */
|
|
il_mod_ht40_chan_info(il, ieeeband,
|
|
eeprom_ch_idx[ch] + 4,
|
|
&eeprom_ch_info[ch],
|
|
IEEE80211_CHAN_NO_HT40MINUS);
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(il_init_channel_map);
|
|
|
|
/*
|
|
* il_free_channel_map - undo allocations in il_init_channel_map
|
|
*/
|
|
void
|
|
il_free_channel_map(struct il_priv *il)
|
|
{
|
|
kfree(il->channel_info);
|
|
il->channel_count = 0;
|
|
}
|
|
EXPORT_SYMBOL(il_free_channel_map);
|
|
|
|
/**
|
|
* il_get_channel_info - Find driver's ilate channel info
|
|
*
|
|
* Based on band and channel number.
|
|
*/
|
|
const struct il_channel_info *
|
|
il_get_channel_info(const struct il_priv *il, enum ieee80211_band band,
|
|
u16 channel)
|
|
{
|
|
int i;
|
|
|
|
switch (band) {
|
|
case IEEE80211_BAND_5GHZ:
|
|
for (i = 14; i < il->channel_count; i++) {
|
|
if (il->channel_info[i].channel == channel)
|
|
return &il->channel_info[i];
|
|
}
|
|
break;
|
|
case IEEE80211_BAND_2GHZ:
|
|
if (channel >= 1 && channel <= 14)
|
|
return &il->channel_info[channel - 1];
|
|
break;
|
|
default:
|
|
BUG();
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
EXPORT_SYMBOL(il_get_channel_info);
|
|
|
|
/*
|
|
* Setting power level allows the card to go to sleep when not busy.
|
|
*
|
|
* We calculate a sleep command based on the required latency, which
|
|
* we get from mac80211. In order to handle thermal throttling, we can
|
|
* also use pre-defined power levels.
|
|
*/
|
|
|
|
/*
|
|
* This defines the old power levels. They are still used by default
|
|
* (level 1) and for thermal throttle (levels 3 through 5)
|
|
*/
|
|
|
|
struct il_power_vec_entry {
|
|
struct il_powertable_cmd cmd;
|
|
u8 no_dtim; /* number of skip dtim */
|
|
};
|
|
|
|
static void
|
|
il_power_sleep_cam_cmd(struct il_priv *il, struct il_powertable_cmd *cmd)
|
|
{
|
|
memset(cmd, 0, sizeof(*cmd));
|
|
|
|
if (il->power_data.pci_pm)
|
|
cmd->flags |= IL_POWER_PCI_PM_MSK;
|
|
|
|
D_POWER("Sleep command for CAM\n");
|
|
}
|
|
|
|
static int
|
|
il_set_power(struct il_priv *il, struct il_powertable_cmd *cmd)
|
|
{
|
|
D_POWER("Sending power/sleep command\n");
|
|
D_POWER("Flags value = 0x%08X\n", cmd->flags);
|
|
D_POWER("Tx timeout = %u\n", le32_to_cpu(cmd->tx_data_timeout));
|
|
D_POWER("Rx timeout = %u\n", le32_to_cpu(cmd->rx_data_timeout));
|
|
D_POWER("Sleep interval vector = { %d , %d , %d , %d , %d }\n",
|
|
le32_to_cpu(cmd->sleep_interval[0]),
|
|
le32_to_cpu(cmd->sleep_interval[1]),
|
|
le32_to_cpu(cmd->sleep_interval[2]),
|
|
le32_to_cpu(cmd->sleep_interval[3]),
|
|
le32_to_cpu(cmd->sleep_interval[4]));
|
|
|
|
return il_send_cmd_pdu(il, C_POWER_TBL,
|
|
sizeof(struct il_powertable_cmd), cmd);
|
|
}
|
|
|
|
static int
|
|
il_power_set_mode(struct il_priv *il, struct il_powertable_cmd *cmd, bool force)
|
|
{
|
|
int ret;
|
|
bool update_chains;
|
|
|
|
lockdep_assert_held(&il->mutex);
|
|
|
|
/* Don't update the RX chain when chain noise calibration is running */
|
|
update_chains = il->chain_noise_data.state == IL_CHAIN_NOISE_DONE ||
|
|
il->chain_noise_data.state == IL_CHAIN_NOISE_ALIVE;
|
|
|
|
if (!memcmp(&il->power_data.sleep_cmd, cmd, sizeof(*cmd)) && !force)
|
|
return 0;
|
|
|
|
if (!il_is_ready_rf(il))
|
|
return -EIO;
|
|
|
|
/* scan complete use sleep_power_next, need to be updated */
|
|
memcpy(&il->power_data.sleep_cmd_next, cmd, sizeof(*cmd));
|
|
if (test_bit(S_SCANNING, &il->status) && !force) {
|
|
D_INFO("Defer power set mode while scanning\n");
|
|
return 0;
|
|
}
|
|
|
|
if (cmd->flags & IL_POWER_DRIVER_ALLOW_SLEEP_MSK)
|
|
set_bit(S_POWER_PMI, &il->status);
|
|
|
|
ret = il_set_power(il, cmd);
|
|
if (!ret) {
|
|
if (!(cmd->flags & IL_POWER_DRIVER_ALLOW_SLEEP_MSK))
|
|
clear_bit(S_POWER_PMI, &il->status);
|
|
|
|
if (il->ops->update_chain_flags && update_chains)
|
|
il->ops->update_chain_flags(il);
|
|
else if (il->ops->update_chain_flags)
|
|
D_POWER("Cannot update the power, chain noise "
|
|
"calibration running: %d\n",
|
|
il->chain_noise_data.state);
|
|
|
|
memcpy(&il->power_data.sleep_cmd, cmd, sizeof(*cmd));
|
|
} else
|
|
IL_ERR("set power fail, ret = %d", ret);
|
|
|
|
return ret;
|
|
}
|
|
|
|
int
|
|
il_power_update_mode(struct il_priv *il, bool force)
|
|
{
|
|
struct il_powertable_cmd cmd;
|
|
|
|
il_power_sleep_cam_cmd(il, &cmd);
|
|
return il_power_set_mode(il, &cmd, force);
|
|
}
|
|
EXPORT_SYMBOL(il_power_update_mode);
|
|
|
|
/* initialize to default */
|
|
void
|
|
il_power_initialize(struct il_priv *il)
|
|
{
|
|
u16 lctl;
|
|
|
|
pcie_capability_read_word(il->pci_dev, PCI_EXP_LNKCTL, &lctl);
|
|
il->power_data.pci_pm = !(lctl & PCI_EXP_LNKCTL_ASPM_L0S);
|
|
|
|
il->power_data.debug_sleep_level_override = -1;
|
|
|
|
memset(&il->power_data.sleep_cmd, 0, sizeof(il->power_data.sleep_cmd));
|
|
}
|
|
EXPORT_SYMBOL(il_power_initialize);
|
|
|
|
/* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
|
|
* sending probe req. This should be set long enough to hear probe responses
|
|
* from more than one AP. */
|
|
#define IL_ACTIVE_DWELL_TIME_24 (30) /* all times in msec */
|
|
#define IL_ACTIVE_DWELL_TIME_52 (20)
|
|
|
|
#define IL_ACTIVE_DWELL_FACTOR_24GHZ (3)
|
|
#define IL_ACTIVE_DWELL_FACTOR_52GHZ (2)
|
|
|
|
/* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
|
|
* Must be set longer than active dwell time.
|
|
* For the most reliable scan, set > AP beacon interval (typically 100msec). */
|
|
#define IL_PASSIVE_DWELL_TIME_24 (20) /* all times in msec */
|
|
#define IL_PASSIVE_DWELL_TIME_52 (10)
|
|
#define IL_PASSIVE_DWELL_BASE (100)
|
|
#define IL_CHANNEL_TUNE_TIME 5
|
|
|
|
static int
|
|
il_send_scan_abort(struct il_priv *il)
|
|
{
|
|
int ret;
|
|
struct il_rx_pkt *pkt;
|
|
struct il_host_cmd cmd = {
|
|
.id = C_SCAN_ABORT,
|
|
.flags = CMD_WANT_SKB,
|
|
};
|
|
|
|
/* Exit instantly with error when device is not ready
|
|
* to receive scan abort command or it does not perform
|
|
* hardware scan currently */
|
|
if (!test_bit(S_READY, &il->status) ||
|
|
!test_bit(S_GEO_CONFIGURED, &il->status) ||
|
|
!test_bit(S_SCAN_HW, &il->status) ||
|
|
test_bit(S_FW_ERROR, &il->status) ||
|
|
test_bit(S_EXIT_PENDING, &il->status))
|
|
return -EIO;
|
|
|
|
ret = il_send_cmd_sync(il, &cmd);
|
|
if (ret)
|
|
return ret;
|
|
|
|
pkt = (struct il_rx_pkt *)cmd.reply_page;
|
|
if (pkt->u.status != CAN_ABORT_STATUS) {
|
|
/* The scan abort will return 1 for success or
|
|
* 2 for "failure". A failure condition can be
|
|
* due to simply not being in an active scan which
|
|
* can occur if we send the scan abort before we
|
|
* the microcode has notified us that a scan is
|
|
* completed. */
|
|
D_SCAN("SCAN_ABORT ret %d.\n", pkt->u.status);
|
|
ret = -EIO;
|
|
}
|
|
|
|
il_free_pages(il, cmd.reply_page);
|
|
return ret;
|
|
}
|
|
|
|
static void
|
|
il_complete_scan(struct il_priv *il, bool aborted)
|
|
{
|
|
/* check if scan was requested from mac80211 */
|
|
if (il->scan_request) {
|
|
D_SCAN("Complete scan in mac80211\n");
|
|
ieee80211_scan_completed(il->hw, aborted);
|
|
}
|
|
|
|
il->scan_vif = NULL;
|
|
il->scan_request = NULL;
|
|
}
|
|
|
|
void
|
|
il_force_scan_end(struct il_priv *il)
|
|
{
|
|
lockdep_assert_held(&il->mutex);
|
|
|
|
if (!test_bit(S_SCANNING, &il->status)) {
|
|
D_SCAN("Forcing scan end while not scanning\n");
|
|
return;
|
|
}
|
|
|
|
D_SCAN("Forcing scan end\n");
|
|
clear_bit(S_SCANNING, &il->status);
|
|
clear_bit(S_SCAN_HW, &il->status);
|
|
clear_bit(S_SCAN_ABORTING, &il->status);
|
|
il_complete_scan(il, true);
|
|
}
|
|
|
|
static void
|
|
il_do_scan_abort(struct il_priv *il)
|
|
{
|
|
int ret;
|
|
|
|
lockdep_assert_held(&il->mutex);
|
|
|
|
if (!test_bit(S_SCANNING, &il->status)) {
|
|
D_SCAN("Not performing scan to abort\n");
|
|
return;
|
|
}
|
|
|
|
if (test_and_set_bit(S_SCAN_ABORTING, &il->status)) {
|
|
D_SCAN("Scan abort in progress\n");
|
|
return;
|
|
}
|
|
|
|
ret = il_send_scan_abort(il);
|
|
if (ret) {
|
|
D_SCAN("Send scan abort failed %d\n", ret);
|
|
il_force_scan_end(il);
|
|
} else
|
|
D_SCAN("Successfully send scan abort\n");
|
|
}
|
|
|
|
/**
|
|
* il_scan_cancel - Cancel any currently executing HW scan
|
|
*/
|
|
int
|
|
il_scan_cancel(struct il_priv *il)
|
|
{
|
|
D_SCAN("Queuing abort scan\n");
|
|
queue_work(il->workqueue, &il->abort_scan);
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(il_scan_cancel);
|
|
|
|
/**
|
|
* il_scan_cancel_timeout - Cancel any currently executing HW scan
|
|
* @ms: amount of time to wait (in milliseconds) for scan to abort
|
|
*
|
|
*/
|
|
int
|
|
il_scan_cancel_timeout(struct il_priv *il, unsigned long ms)
|
|
{
|
|
unsigned long timeout = jiffies + msecs_to_jiffies(ms);
|
|
|
|
lockdep_assert_held(&il->mutex);
|
|
|
|
D_SCAN("Scan cancel timeout\n");
|
|
|
|
il_do_scan_abort(il);
|
|
|
|
while (time_before_eq(jiffies, timeout)) {
|
|
if (!test_bit(S_SCAN_HW, &il->status))
|
|
break;
|
|
msleep(20);
|
|
}
|
|
|
|
return test_bit(S_SCAN_HW, &il->status);
|
|
}
|
|
EXPORT_SYMBOL(il_scan_cancel_timeout);
|
|
|
|
/* Service response to C_SCAN (0x80) */
|
|
static void
|
|
il_hdl_scan(struct il_priv *il, struct il_rx_buf *rxb)
|
|
{
|
|
#ifdef CONFIG_IWLEGACY_DEBUG
|
|
struct il_rx_pkt *pkt = rxb_addr(rxb);
|
|
struct il_scanreq_notification *notif =
|
|
(struct il_scanreq_notification *)pkt->u.raw;
|
|
|
|
D_SCAN("Scan request status = 0x%x\n", notif->status);
|
|
#endif
|
|
}
|
|
|
|
/* Service N_SCAN_START (0x82) */
|
|
static void
|
|
il_hdl_scan_start(struct il_priv *il, struct il_rx_buf *rxb)
|
|
{
|
|
struct il_rx_pkt *pkt = rxb_addr(rxb);
|
|
struct il_scanstart_notification *notif =
|
|
(struct il_scanstart_notification *)pkt->u.raw;
|
|
il->scan_start_tsf = le32_to_cpu(notif->tsf_low);
|
|
D_SCAN("Scan start: " "%d [802.11%s] "
|
|
"(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n", notif->channel,
|
|
notif->band ? "bg" : "a", le32_to_cpu(notif->tsf_high),
|
|
le32_to_cpu(notif->tsf_low), notif->status, notif->beacon_timer);
|
|
}
|
|
|
|
/* Service N_SCAN_RESULTS (0x83) */
|
|
static void
|
|
il_hdl_scan_results(struct il_priv *il, struct il_rx_buf *rxb)
|
|
{
|
|
#ifdef CONFIG_IWLEGACY_DEBUG
|
|
struct il_rx_pkt *pkt = rxb_addr(rxb);
|
|
struct il_scanresults_notification *notif =
|
|
(struct il_scanresults_notification *)pkt->u.raw;
|
|
|
|
D_SCAN("Scan ch.res: " "%d [802.11%s] " "(TSF: 0x%08X:%08X) - %d "
|
|
"elapsed=%lu usec\n", notif->channel, notif->band ? "bg" : "a",
|
|
le32_to_cpu(notif->tsf_high), le32_to_cpu(notif->tsf_low),
|
|
le32_to_cpu(notif->stats[0]),
|
|
le32_to_cpu(notif->tsf_low) - il->scan_start_tsf);
|
|
#endif
|
|
}
|
|
|
|
/* Service N_SCAN_COMPLETE (0x84) */
|
|
static void
|
|
il_hdl_scan_complete(struct il_priv *il, struct il_rx_buf *rxb)
|
|
{
|
|
|
|
#ifdef CONFIG_IWLEGACY_DEBUG
|
|
struct il_rx_pkt *pkt = rxb_addr(rxb);
|
|
struct il_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
|
|
#endif
|
|
|
|
D_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
|
|
scan_notif->scanned_channels, scan_notif->tsf_low,
|
|
scan_notif->tsf_high, scan_notif->status);
|
|
|
|
/* The HW is no longer scanning */
|
|
clear_bit(S_SCAN_HW, &il->status);
|
|
|
|
D_SCAN("Scan on %sGHz took %dms\n",
|
|
(il->scan_band == IEEE80211_BAND_2GHZ) ? "2.4" : "5.2",
|
|
jiffies_to_msecs(jiffies - il->scan_start));
|
|
|
|
queue_work(il->workqueue, &il->scan_completed);
|
|
}
|
|
|
|
void
|
|
il_setup_rx_scan_handlers(struct il_priv *il)
|
|
{
|
|
/* scan handlers */
|
|
il->handlers[C_SCAN] = il_hdl_scan;
|
|
il->handlers[N_SCAN_START] = il_hdl_scan_start;
|
|
il->handlers[N_SCAN_RESULTS] = il_hdl_scan_results;
|
|
il->handlers[N_SCAN_COMPLETE] = il_hdl_scan_complete;
|
|
}
|
|
EXPORT_SYMBOL(il_setup_rx_scan_handlers);
|
|
|
|
u16
|
|
il_get_active_dwell_time(struct il_priv *il, enum ieee80211_band band,
|
|
u8 n_probes)
|
|
{
|
|
if (band == IEEE80211_BAND_5GHZ)
|
|
return IL_ACTIVE_DWELL_TIME_52 +
|
|
IL_ACTIVE_DWELL_FACTOR_52GHZ * (n_probes + 1);
|
|
else
|
|
return IL_ACTIVE_DWELL_TIME_24 +
|
|
IL_ACTIVE_DWELL_FACTOR_24GHZ * (n_probes + 1);
|
|
}
|
|
EXPORT_SYMBOL(il_get_active_dwell_time);
|
|
|
|
u16
|
|
il_get_passive_dwell_time(struct il_priv *il, enum ieee80211_band band,
|
|
struct ieee80211_vif *vif)
|
|
{
|
|
u16 value;
|
|
|
|
u16 passive =
|
|
(band ==
|
|
IEEE80211_BAND_2GHZ) ? IL_PASSIVE_DWELL_BASE +
|
|
IL_PASSIVE_DWELL_TIME_24 : IL_PASSIVE_DWELL_BASE +
|
|
IL_PASSIVE_DWELL_TIME_52;
|
|
|
|
if (il_is_any_associated(il)) {
|
|
/*
|
|
* If we're associated, we clamp the maximum passive
|
|
* dwell time to be 98% of the smallest beacon interval
|
|
* (minus 2 * channel tune time)
|
|
*/
|
|
value = il->vif ? il->vif->bss_conf.beacon_int : 0;
|
|
if (value > IL_PASSIVE_DWELL_BASE || !value)
|
|
value = IL_PASSIVE_DWELL_BASE;
|
|
value = (value * 98) / 100 - IL_CHANNEL_TUNE_TIME * 2;
|
|
passive = min(value, passive);
|
|
}
|
|
|
|
return passive;
|
|
}
|
|
EXPORT_SYMBOL(il_get_passive_dwell_time);
|
|
|
|
void
|
|
il_init_scan_params(struct il_priv *il)
|
|
{
|
|
u8 ant_idx = fls(il->hw_params.valid_tx_ant) - 1;
|
|
if (!il->scan_tx_ant[IEEE80211_BAND_5GHZ])
|
|
il->scan_tx_ant[IEEE80211_BAND_5GHZ] = ant_idx;
|
|
if (!il->scan_tx_ant[IEEE80211_BAND_2GHZ])
|
|
il->scan_tx_ant[IEEE80211_BAND_2GHZ] = ant_idx;
|
|
}
|
|
EXPORT_SYMBOL(il_init_scan_params);
|
|
|
|
static int
|
|
il_scan_initiate(struct il_priv *il, struct ieee80211_vif *vif)
|
|
{
|
|
int ret;
|
|
|
|
lockdep_assert_held(&il->mutex);
|
|
|
|
cancel_delayed_work(&il->scan_check);
|
|
|
|
if (!il_is_ready_rf(il)) {
|
|
IL_WARN("Request scan called when driver not ready.\n");
|
|
return -EIO;
|
|
}
|
|
|
|
if (test_bit(S_SCAN_HW, &il->status)) {
|
|
D_SCAN("Multiple concurrent scan requests in parallel.\n");
|
|
return -EBUSY;
|
|
}
|
|
|
|
if (test_bit(S_SCAN_ABORTING, &il->status)) {
|
|
D_SCAN("Scan request while abort pending.\n");
|
|
return -EBUSY;
|
|
}
|
|
|
|
D_SCAN("Starting scan...\n");
|
|
|
|
set_bit(S_SCANNING, &il->status);
|
|
il->scan_start = jiffies;
|
|
|
|
ret = il->ops->request_scan(il, vif);
|
|
if (ret) {
|
|
clear_bit(S_SCANNING, &il->status);
|
|
return ret;
|
|
}
|
|
|
|
queue_delayed_work(il->workqueue, &il->scan_check,
|
|
IL_SCAN_CHECK_WATCHDOG);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
il_mac_hw_scan(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
|
|
struct cfg80211_scan_request *req)
|
|
{
|
|
struct il_priv *il = hw->priv;
|
|
int ret;
|
|
|
|
if (req->n_channels == 0) {
|
|
IL_ERR("Can not scan on no channels.\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
mutex_lock(&il->mutex);
|
|
D_MAC80211("enter\n");
|
|
|
|
if (test_bit(S_SCANNING, &il->status)) {
|
|
D_SCAN("Scan already in progress.\n");
|
|
ret = -EAGAIN;
|
|
goto out_unlock;
|
|
}
|
|
|
|
/* mac80211 will only ask for one band at a time */
|
|
il->scan_request = req;
|
|
il->scan_vif = vif;
|
|
il->scan_band = req->channels[0]->band;
|
|
|
|
ret = il_scan_initiate(il, vif);
|
|
|
|
out_unlock:
|
|
D_MAC80211("leave ret %d\n", ret);
|
|
mutex_unlock(&il->mutex);
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(il_mac_hw_scan);
|
|
|
|
static void
|
|
il_bg_scan_check(struct work_struct *data)
|
|
{
|
|
struct il_priv *il =
|
|
container_of(data, struct il_priv, scan_check.work);
|
|
|
|
D_SCAN("Scan check work\n");
|
|
|
|
/* Since we are here firmware does not finish scan and
|
|
* most likely is in bad shape, so we don't bother to
|
|
* send abort command, just force scan complete to mac80211 */
|
|
mutex_lock(&il->mutex);
|
|
il_force_scan_end(il);
|
|
mutex_unlock(&il->mutex);
|
|
}
|
|
|
|
/**
|
|
* il_fill_probe_req - fill in all required fields and IE for probe request
|
|
*/
|
|
|
|
u16
|
|
il_fill_probe_req(struct il_priv *il, struct ieee80211_mgmt *frame,
|
|
const u8 *ta, const u8 *ies, int ie_len, int left)
|
|
{
|
|
int len = 0;
|
|
u8 *pos = NULL;
|
|
|
|
/* Make sure there is enough space for the probe request,
|
|
* two mandatory IEs and the data */
|
|
left -= 24;
|
|
if (left < 0)
|
|
return 0;
|
|
|
|
frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
|
|
eth_broadcast_addr(frame->da);
|
|
memcpy(frame->sa, ta, ETH_ALEN);
|
|
eth_broadcast_addr(frame->bssid);
|
|
frame->seq_ctrl = 0;
|
|
|
|
len += 24;
|
|
|
|
/* ...next IE... */
|
|
pos = &frame->u.probe_req.variable[0];
|
|
|
|
/* fill in our indirect SSID IE */
|
|
left -= 2;
|
|
if (left < 0)
|
|
return 0;
|
|
*pos++ = WLAN_EID_SSID;
|
|
*pos++ = 0;
|
|
|
|
len += 2;
|
|
|
|
if (WARN_ON(left < ie_len))
|
|
return len;
|
|
|
|
if (ies && ie_len) {
|
|
memcpy(pos, ies, ie_len);
|
|
len += ie_len;
|
|
}
|
|
|
|
return (u16) len;
|
|
}
|
|
EXPORT_SYMBOL(il_fill_probe_req);
|
|
|
|
static void
|
|
il_bg_abort_scan(struct work_struct *work)
|
|
{
|
|
struct il_priv *il = container_of(work, struct il_priv, abort_scan);
|
|
|
|
D_SCAN("Abort scan work\n");
|
|
|
|
/* We keep scan_check work queued in case when firmware will not
|
|
* report back scan completed notification */
|
|
mutex_lock(&il->mutex);
|
|
il_scan_cancel_timeout(il, 200);
|
|
mutex_unlock(&il->mutex);
|
|
}
|
|
|
|
static void
|
|
il_bg_scan_completed(struct work_struct *work)
|
|
{
|
|
struct il_priv *il = container_of(work, struct il_priv, scan_completed);
|
|
bool aborted;
|
|
|
|
D_SCAN("Completed scan.\n");
|
|
|
|
cancel_delayed_work(&il->scan_check);
|
|
|
|
mutex_lock(&il->mutex);
|
|
|
|
aborted = test_and_clear_bit(S_SCAN_ABORTING, &il->status);
|
|
if (aborted)
|
|
D_SCAN("Aborted scan completed.\n");
|
|
|
|
if (!test_and_clear_bit(S_SCANNING, &il->status)) {
|
|
D_SCAN("Scan already completed.\n");
|
|
goto out_settings;
|
|
}
|
|
|
|
il_complete_scan(il, aborted);
|
|
|
|
out_settings:
|
|
/* Can we still talk to firmware ? */
|
|
if (!il_is_ready_rf(il))
|
|
goto out;
|
|
|
|
/*
|
|
* We do not commit power settings while scan is pending,
|
|
* do it now if the settings changed.
|
|
*/
|
|
il_power_set_mode(il, &il->power_data.sleep_cmd_next, false);
|
|
il_set_tx_power(il, il->tx_power_next, false);
|
|
|
|
il->ops->post_scan(il);
|
|
|
|
out:
|
|
mutex_unlock(&il->mutex);
|
|
}
|
|
|
|
void
|
|
il_setup_scan_deferred_work(struct il_priv *il)
|
|
{
|
|
INIT_WORK(&il->scan_completed, il_bg_scan_completed);
|
|
INIT_WORK(&il->abort_scan, il_bg_abort_scan);
|
|
INIT_DELAYED_WORK(&il->scan_check, il_bg_scan_check);
|
|
}
|
|
EXPORT_SYMBOL(il_setup_scan_deferred_work);
|
|
|
|
void
|
|
il_cancel_scan_deferred_work(struct il_priv *il)
|
|
{
|
|
cancel_work_sync(&il->abort_scan);
|
|
cancel_work_sync(&il->scan_completed);
|
|
|
|
if (cancel_delayed_work_sync(&il->scan_check)) {
|
|
mutex_lock(&il->mutex);
|
|
il_force_scan_end(il);
|
|
mutex_unlock(&il->mutex);
|
|
}
|
|
}
|
|
EXPORT_SYMBOL(il_cancel_scan_deferred_work);
|
|
|
|
/* il->sta_lock must be held */
|
|
static void
|
|
il_sta_ucode_activate(struct il_priv *il, u8 sta_id)
|
|
{
|
|
|
|
if (!(il->stations[sta_id].used & IL_STA_DRIVER_ACTIVE))
|
|
IL_ERR("ACTIVATE a non DRIVER active station id %u addr %pM\n",
|
|
sta_id, il->stations[sta_id].sta.sta.addr);
|
|
|
|
if (il->stations[sta_id].used & IL_STA_UCODE_ACTIVE) {
|
|
D_ASSOC("STA id %u addr %pM already present"
|
|
" in uCode (according to driver)\n", sta_id,
|
|
il->stations[sta_id].sta.sta.addr);
|
|
} else {
|
|
il->stations[sta_id].used |= IL_STA_UCODE_ACTIVE;
|
|
D_ASSOC("Added STA id %u addr %pM to uCode\n", sta_id,
|
|
il->stations[sta_id].sta.sta.addr);
|
|
}
|
|
}
|
|
|
|
static int
|
|
il_process_add_sta_resp(struct il_priv *il, struct il_addsta_cmd *addsta,
|
|
struct il_rx_pkt *pkt, bool sync)
|
|
{
|
|
u8 sta_id = addsta->sta.sta_id;
|
|
unsigned long flags;
|
|
int ret = -EIO;
|
|
|
|
if (pkt->hdr.flags & IL_CMD_FAILED_MSK) {
|
|
IL_ERR("Bad return from C_ADD_STA (0x%08X)\n", pkt->hdr.flags);
|
|
return ret;
|
|
}
|
|
|
|
D_INFO("Processing response for adding station %u\n", sta_id);
|
|
|
|
spin_lock_irqsave(&il->sta_lock, flags);
|
|
|
|
switch (pkt->u.add_sta.status) {
|
|
case ADD_STA_SUCCESS_MSK:
|
|
D_INFO("C_ADD_STA PASSED\n");
|
|
il_sta_ucode_activate(il, sta_id);
|
|
ret = 0;
|
|
break;
|
|
case ADD_STA_NO_ROOM_IN_TBL:
|
|
IL_ERR("Adding station %d failed, no room in table.\n", sta_id);
|
|
break;
|
|
case ADD_STA_NO_BLOCK_ACK_RESOURCE:
|
|
IL_ERR("Adding station %d failed, no block ack resource.\n",
|
|
sta_id);
|
|
break;
|
|
case ADD_STA_MODIFY_NON_EXIST_STA:
|
|
IL_ERR("Attempting to modify non-existing station %d\n",
|
|
sta_id);
|
|
break;
|
|
default:
|
|
D_ASSOC("Received C_ADD_STA:(0x%08X)\n", pkt->u.add_sta.status);
|
|
break;
|
|
}
|
|
|
|
D_INFO("%s station id %u addr %pM\n",
|
|
il->stations[sta_id].sta.mode ==
|
|
STA_CONTROL_MODIFY_MSK ? "Modified" : "Added", sta_id,
|
|
il->stations[sta_id].sta.sta.addr);
|
|
|
|
/*
|
|
* XXX: The MAC address in the command buffer is often changed from
|
|
* the original sent to the device. That is, the MAC address
|
|
* written to the command buffer often is not the same MAC address
|
|
* read from the command buffer when the command returns. This
|
|
* issue has not yet been resolved and this debugging is left to
|
|
* observe the problem.
|
|
*/
|
|
D_INFO("%s station according to cmd buffer %pM\n",
|
|
il->stations[sta_id].sta.mode ==
|
|
STA_CONTROL_MODIFY_MSK ? "Modified" : "Added", addsta->sta.addr);
|
|
spin_unlock_irqrestore(&il->sta_lock, flags);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void
|
|
il_add_sta_callback(struct il_priv *il, struct il_device_cmd *cmd,
|
|
struct il_rx_pkt *pkt)
|
|
{
|
|
struct il_addsta_cmd *addsta = (struct il_addsta_cmd *)cmd->cmd.payload;
|
|
|
|
il_process_add_sta_resp(il, addsta, pkt, false);
|
|
|
|
}
|
|
|
|
int
|
|
il_send_add_sta(struct il_priv *il, struct il_addsta_cmd *sta, u8 flags)
|
|
{
|
|
struct il_rx_pkt *pkt = NULL;
|
|
int ret = 0;
|
|
u8 data[sizeof(*sta)];
|
|
struct il_host_cmd cmd = {
|
|
.id = C_ADD_STA,
|
|
.flags = flags,
|
|
.data = data,
|
|
};
|
|
u8 sta_id __maybe_unused = sta->sta.sta_id;
|
|
|
|
D_INFO("Adding sta %u (%pM) %ssynchronously\n", sta_id, sta->sta.addr,
|
|
flags & CMD_ASYNC ? "a" : "");
|
|
|
|
if (flags & CMD_ASYNC)
|
|
cmd.callback = il_add_sta_callback;
|
|
else {
|
|
cmd.flags |= CMD_WANT_SKB;
|
|
might_sleep();
|
|
}
|
|
|
|
cmd.len = il->ops->build_addsta_hcmd(sta, data);
|
|
ret = il_send_cmd(il, &cmd);
|
|
|
|
if (ret || (flags & CMD_ASYNC))
|
|
return ret;
|
|
|
|
if (ret == 0) {
|
|
pkt = (struct il_rx_pkt *)cmd.reply_page;
|
|
ret = il_process_add_sta_resp(il, sta, pkt, true);
|
|
}
|
|
il_free_pages(il, cmd.reply_page);
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(il_send_add_sta);
|
|
|
|
static void
|
|
il_set_ht_add_station(struct il_priv *il, u8 idx, struct ieee80211_sta *sta)
|
|
{
|
|
struct ieee80211_sta_ht_cap *sta_ht_inf = &sta->ht_cap;
|
|
__le32 sta_flags;
|
|
|
|
if (!sta || !sta_ht_inf->ht_supported)
|
|
goto done;
|
|
|
|
D_ASSOC("spatial multiplexing power save mode: %s\n",
|
|
(sta->smps_mode == IEEE80211_SMPS_STATIC) ? "static" :
|
|
(sta->smps_mode == IEEE80211_SMPS_DYNAMIC) ? "dynamic" :
|
|
"disabled");
|
|
|
|
sta_flags = il->stations[idx].sta.station_flags;
|
|
|
|
sta_flags &= ~(STA_FLG_RTS_MIMO_PROT_MSK | STA_FLG_MIMO_DIS_MSK);
|
|
|
|
switch (sta->smps_mode) {
|
|
case IEEE80211_SMPS_STATIC:
|
|
sta_flags |= STA_FLG_MIMO_DIS_MSK;
|
|
break;
|
|
case IEEE80211_SMPS_DYNAMIC:
|
|
sta_flags |= STA_FLG_RTS_MIMO_PROT_MSK;
|
|
break;
|
|
case IEEE80211_SMPS_OFF:
|
|
break;
|
|
default:
|
|
IL_WARN("Invalid MIMO PS mode %d\n", sta->smps_mode);
|
|
break;
|
|
}
|
|
|
|
sta_flags |=
|
|
cpu_to_le32((u32) sta_ht_inf->
|
|
ampdu_factor << STA_FLG_MAX_AGG_SIZE_POS);
|
|
|
|
sta_flags |=
|
|
cpu_to_le32((u32) sta_ht_inf->
|
|
ampdu_density << STA_FLG_AGG_MPDU_DENSITY_POS);
|
|
|
|
if (il_is_ht40_tx_allowed(il, &sta->ht_cap))
|
|
sta_flags |= STA_FLG_HT40_EN_MSK;
|
|
else
|
|
sta_flags &= ~STA_FLG_HT40_EN_MSK;
|
|
|
|
il->stations[idx].sta.station_flags = sta_flags;
|
|
done:
|
|
return;
|
|
}
|
|
|
|
/**
|
|
* il_prep_station - Prepare station information for addition
|
|
*
|
|
* should be called with sta_lock held
|
|
*/
|
|
u8
|
|
il_prep_station(struct il_priv *il, const u8 *addr, bool is_ap,
|
|
struct ieee80211_sta *sta)
|
|
{
|
|
struct il_station_entry *station;
|
|
int i;
|
|
u8 sta_id = IL_INVALID_STATION;
|
|
u16 rate;
|
|
|
|
if (is_ap)
|
|
sta_id = IL_AP_ID;
|
|
else if (is_broadcast_ether_addr(addr))
|
|
sta_id = il->hw_params.bcast_id;
|
|
else
|
|
for (i = IL_STA_ID; i < il->hw_params.max_stations; i++) {
|
|
if (ether_addr_equal(il->stations[i].sta.sta.addr,
|
|
addr)) {
|
|
sta_id = i;
|
|
break;
|
|
}
|
|
|
|
if (!il->stations[i].used &&
|
|
sta_id == IL_INVALID_STATION)
|
|
sta_id = i;
|
|
}
|
|
|
|
/*
|
|
* These two conditions have the same outcome, but keep them
|
|
* separate
|
|
*/
|
|
if (unlikely(sta_id == IL_INVALID_STATION))
|
|
return sta_id;
|
|
|
|
/*
|
|
* uCode is not able to deal with multiple requests to add a
|
|
* station. Keep track if one is in progress so that we do not send
|
|
* another.
|
|
*/
|
|
if (il->stations[sta_id].used & IL_STA_UCODE_INPROGRESS) {
|
|
D_INFO("STA %d already in process of being added.\n", sta_id);
|
|
return sta_id;
|
|
}
|
|
|
|
if ((il->stations[sta_id].used & IL_STA_DRIVER_ACTIVE) &&
|
|
(il->stations[sta_id].used & IL_STA_UCODE_ACTIVE) &&
|
|
ether_addr_equal(il->stations[sta_id].sta.sta.addr, addr)) {
|
|
D_ASSOC("STA %d (%pM) already added, not adding again.\n",
|
|
sta_id, addr);
|
|
return sta_id;
|
|
}
|
|
|
|
station = &il->stations[sta_id];
|
|
station->used = IL_STA_DRIVER_ACTIVE;
|
|
D_ASSOC("Add STA to driver ID %d: %pM\n", sta_id, addr);
|
|
il->num_stations++;
|
|
|
|
/* Set up the C_ADD_STA command to send to device */
|
|
memset(&station->sta, 0, sizeof(struct il_addsta_cmd));
|
|
memcpy(station->sta.sta.addr, addr, ETH_ALEN);
|
|
station->sta.mode = 0;
|
|
station->sta.sta.sta_id = sta_id;
|
|
station->sta.station_flags = 0;
|
|
|
|
/*
|
|
* OK to call unconditionally, since local stations (IBSS BSSID
|
|
* STA and broadcast STA) pass in a NULL sta, and mac80211
|
|
* doesn't allow HT IBSS.
|
|
*/
|
|
il_set_ht_add_station(il, sta_id, sta);
|
|
|
|
/* 3945 only */
|
|
rate = (il->band == IEEE80211_BAND_5GHZ) ? RATE_6M_PLCP : RATE_1M_PLCP;
|
|
/* Turn on both antennas for the station... */
|
|
station->sta.rate_n_flags = cpu_to_le16(rate | RATE_MCS_ANT_AB_MSK);
|
|
|
|
return sta_id;
|
|
|
|
}
|
|
EXPORT_SYMBOL_GPL(il_prep_station);
|
|
|
|
#define STA_WAIT_TIMEOUT (HZ/2)
|
|
|
|
/**
|
|
* il_add_station_common -
|
|
*/
|
|
int
|
|
il_add_station_common(struct il_priv *il, const u8 *addr, bool is_ap,
|
|
struct ieee80211_sta *sta, u8 *sta_id_r)
|
|
{
|
|
unsigned long flags_spin;
|
|
int ret = 0;
|
|
u8 sta_id;
|
|
struct il_addsta_cmd sta_cmd;
|
|
|
|
*sta_id_r = 0;
|
|
spin_lock_irqsave(&il->sta_lock, flags_spin);
|
|
sta_id = il_prep_station(il, addr, is_ap, sta);
|
|
if (sta_id == IL_INVALID_STATION) {
|
|
IL_ERR("Unable to prepare station %pM for addition\n", addr);
|
|
spin_unlock_irqrestore(&il->sta_lock, flags_spin);
|
|
return -EINVAL;
|
|
}
|
|
|
|
/*
|
|
* uCode is not able to deal with multiple requests to add a
|
|
* station. Keep track if one is in progress so that we do not send
|
|
* another.
|
|
*/
|
|
if (il->stations[sta_id].used & IL_STA_UCODE_INPROGRESS) {
|
|
D_INFO("STA %d already in process of being added.\n", sta_id);
|
|
spin_unlock_irqrestore(&il->sta_lock, flags_spin);
|
|
return -EEXIST;
|
|
}
|
|
|
|
if ((il->stations[sta_id].used & IL_STA_DRIVER_ACTIVE) &&
|
|
(il->stations[sta_id].used & IL_STA_UCODE_ACTIVE)) {
|
|
D_ASSOC("STA %d (%pM) already added, not adding again.\n",
|
|
sta_id, addr);
|
|
spin_unlock_irqrestore(&il->sta_lock, flags_spin);
|
|
return -EEXIST;
|
|
}
|
|
|
|
il->stations[sta_id].used |= IL_STA_UCODE_INPROGRESS;
|
|
memcpy(&sta_cmd, &il->stations[sta_id].sta,
|
|
sizeof(struct il_addsta_cmd));
|
|
spin_unlock_irqrestore(&il->sta_lock, flags_spin);
|
|
|
|
/* Add station to device's station table */
|
|
ret = il_send_add_sta(il, &sta_cmd, CMD_SYNC);
|
|
if (ret) {
|
|
spin_lock_irqsave(&il->sta_lock, flags_spin);
|
|
IL_ERR("Adding station %pM failed.\n",
|
|
il->stations[sta_id].sta.sta.addr);
|
|
il->stations[sta_id].used &= ~IL_STA_DRIVER_ACTIVE;
|
|
il->stations[sta_id].used &= ~IL_STA_UCODE_INPROGRESS;
|
|
spin_unlock_irqrestore(&il->sta_lock, flags_spin);
|
|
}
|
|
*sta_id_r = sta_id;
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(il_add_station_common);
|
|
|
|
/**
|
|
* il_sta_ucode_deactivate - deactivate ucode status for a station
|
|
*
|
|
* il->sta_lock must be held
|
|
*/
|
|
static void
|
|
il_sta_ucode_deactivate(struct il_priv *il, u8 sta_id)
|
|
{
|
|
/* Ucode must be active and driver must be non active */
|
|
if ((il->stations[sta_id].
|
|
used & (IL_STA_UCODE_ACTIVE | IL_STA_DRIVER_ACTIVE)) !=
|
|
IL_STA_UCODE_ACTIVE)
|
|
IL_ERR("removed non active STA %u\n", sta_id);
|
|
|
|
il->stations[sta_id].used &= ~IL_STA_UCODE_ACTIVE;
|
|
|
|
memset(&il->stations[sta_id], 0, sizeof(struct il_station_entry));
|
|
D_ASSOC("Removed STA %u\n", sta_id);
|
|
}
|
|
|
|
static int
|
|
il_send_remove_station(struct il_priv *il, const u8 * addr, int sta_id,
|
|
bool temporary)
|
|
{
|
|
struct il_rx_pkt *pkt;
|
|
int ret;
|
|
|
|
unsigned long flags_spin;
|
|
struct il_rem_sta_cmd rm_sta_cmd;
|
|
|
|
struct il_host_cmd cmd = {
|
|
.id = C_REM_STA,
|
|
.len = sizeof(struct il_rem_sta_cmd),
|
|
.flags = CMD_SYNC,
|
|
.data = &rm_sta_cmd,
|
|
};
|
|
|
|
memset(&rm_sta_cmd, 0, sizeof(rm_sta_cmd));
|
|
rm_sta_cmd.num_sta = 1;
|
|
memcpy(&rm_sta_cmd.addr, addr, ETH_ALEN);
|
|
|
|
cmd.flags |= CMD_WANT_SKB;
|
|
|
|
ret = il_send_cmd(il, &cmd);
|
|
|
|
if (ret)
|
|
return ret;
|
|
|
|
pkt = (struct il_rx_pkt *)cmd.reply_page;
|
|
if (pkt->hdr.flags & IL_CMD_FAILED_MSK) {
|
|
IL_ERR("Bad return from C_REM_STA (0x%08X)\n", pkt->hdr.flags);
|
|
ret = -EIO;
|
|
}
|
|
|
|
if (!ret) {
|
|
switch (pkt->u.rem_sta.status) {
|
|
case REM_STA_SUCCESS_MSK:
|
|
if (!temporary) {
|
|
spin_lock_irqsave(&il->sta_lock, flags_spin);
|
|
il_sta_ucode_deactivate(il, sta_id);
|
|
spin_unlock_irqrestore(&il->sta_lock,
|
|
flags_spin);
|
|
}
|
|
D_ASSOC("C_REM_STA PASSED\n");
|
|
break;
|
|
default:
|
|
ret = -EIO;
|
|
IL_ERR("C_REM_STA failed\n");
|
|
break;
|
|
}
|
|
}
|
|
il_free_pages(il, cmd.reply_page);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* il_remove_station - Remove driver's knowledge of station.
|
|
*/
|
|
int
|
|
il_remove_station(struct il_priv *il, const u8 sta_id, const u8 * addr)
|
|
{
|
|
unsigned long flags;
|
|
|
|
if (!il_is_ready(il)) {
|
|
D_INFO("Unable to remove station %pM, device not ready.\n",
|
|
addr);
|
|
/*
|
|
* It is typical for stations to be removed when we are
|
|
* going down. Return success since device will be down
|
|
* soon anyway
|
|
*/
|
|
return 0;
|
|
}
|
|
|
|
D_ASSOC("Removing STA from driver:%d %pM\n", sta_id, addr);
|
|
|
|
if (WARN_ON(sta_id == IL_INVALID_STATION))
|
|
return -EINVAL;
|
|
|
|
spin_lock_irqsave(&il->sta_lock, flags);
|
|
|
|
if (!(il->stations[sta_id].used & IL_STA_DRIVER_ACTIVE)) {
|
|
D_INFO("Removing %pM but non DRIVER active\n", addr);
|
|
goto out_err;
|
|
}
|
|
|
|
if (!(il->stations[sta_id].used & IL_STA_UCODE_ACTIVE)) {
|
|
D_INFO("Removing %pM but non UCODE active\n", addr);
|
|
goto out_err;
|
|
}
|
|
|
|
if (il->stations[sta_id].used & IL_STA_LOCAL) {
|
|
kfree(il->stations[sta_id].lq);
|
|
il->stations[sta_id].lq = NULL;
|
|
}
|
|
|
|
il->stations[sta_id].used &= ~IL_STA_DRIVER_ACTIVE;
|
|
|
|
il->num_stations--;
|
|
|
|
BUG_ON(il->num_stations < 0);
|
|
|
|
spin_unlock_irqrestore(&il->sta_lock, flags);
|
|
|
|
return il_send_remove_station(il, addr, sta_id, false);
|
|
out_err:
|
|
spin_unlock_irqrestore(&il->sta_lock, flags);
|
|
return -EINVAL;
|
|
}
|
|
EXPORT_SYMBOL_GPL(il_remove_station);
|
|
|
|
/**
|
|
* il_clear_ucode_stations - clear ucode station table bits
|
|
*
|
|
* This function clears all the bits in the driver indicating
|
|
* which stations are active in the ucode. Call when something
|
|
* other than explicit station management would cause this in
|
|
* the ucode, e.g. unassociated RXON.
|
|
*/
|
|
void
|
|
il_clear_ucode_stations(struct il_priv *il)
|
|
{
|
|
int i;
|
|
unsigned long flags_spin;
|
|
bool cleared = false;
|
|
|
|
D_INFO("Clearing ucode stations in driver\n");
|
|
|
|
spin_lock_irqsave(&il->sta_lock, flags_spin);
|
|
for (i = 0; i < il->hw_params.max_stations; i++) {
|
|
if (il->stations[i].used & IL_STA_UCODE_ACTIVE) {
|
|
D_INFO("Clearing ucode active for station %d\n", i);
|
|
il->stations[i].used &= ~IL_STA_UCODE_ACTIVE;
|
|
cleared = true;
|
|
}
|
|
}
|
|
spin_unlock_irqrestore(&il->sta_lock, flags_spin);
|
|
|
|
if (!cleared)
|
|
D_INFO("No active stations found to be cleared\n");
|
|
}
|
|
EXPORT_SYMBOL(il_clear_ucode_stations);
|
|
|
|
/**
|
|
* il_restore_stations() - Restore driver known stations to device
|
|
*
|
|
* All stations considered active by driver, but not present in ucode, is
|
|
* restored.
|
|
*
|
|
* Function sleeps.
|
|
*/
|
|
void
|
|
il_restore_stations(struct il_priv *il)
|
|
{
|
|
struct il_addsta_cmd sta_cmd;
|
|
struct il_link_quality_cmd lq;
|
|
unsigned long flags_spin;
|
|
int i;
|
|
bool found = false;
|
|
int ret;
|
|
bool send_lq;
|
|
|
|
if (!il_is_ready(il)) {
|
|
D_INFO("Not ready yet, not restoring any stations.\n");
|
|
return;
|
|
}
|
|
|
|
D_ASSOC("Restoring all known stations ... start.\n");
|
|
spin_lock_irqsave(&il->sta_lock, flags_spin);
|
|
for (i = 0; i < il->hw_params.max_stations; i++) {
|
|
if ((il->stations[i].used & IL_STA_DRIVER_ACTIVE) &&
|
|
!(il->stations[i].used & IL_STA_UCODE_ACTIVE)) {
|
|
D_ASSOC("Restoring sta %pM\n",
|
|
il->stations[i].sta.sta.addr);
|
|
il->stations[i].sta.mode = 0;
|
|
il->stations[i].used |= IL_STA_UCODE_INPROGRESS;
|
|
found = true;
|
|
}
|
|
}
|
|
|
|
for (i = 0; i < il->hw_params.max_stations; i++) {
|
|
if ((il->stations[i].used & IL_STA_UCODE_INPROGRESS)) {
|
|
memcpy(&sta_cmd, &il->stations[i].sta,
|
|
sizeof(struct il_addsta_cmd));
|
|
send_lq = false;
|
|
if (il->stations[i].lq) {
|
|
memcpy(&lq, il->stations[i].lq,
|
|
sizeof(struct il_link_quality_cmd));
|
|
send_lq = true;
|
|
}
|
|
spin_unlock_irqrestore(&il->sta_lock, flags_spin);
|
|
ret = il_send_add_sta(il, &sta_cmd, CMD_SYNC);
|
|
if (ret) {
|
|
spin_lock_irqsave(&il->sta_lock, flags_spin);
|
|
IL_ERR("Adding station %pM failed.\n",
|
|
il->stations[i].sta.sta.addr);
|
|
il->stations[i].used &= ~IL_STA_DRIVER_ACTIVE;
|
|
il->stations[i].used &=
|
|
~IL_STA_UCODE_INPROGRESS;
|
|
spin_unlock_irqrestore(&il->sta_lock,
|
|
flags_spin);
|
|
}
|
|
/*
|
|
* Rate scaling has already been initialized, send
|
|
* current LQ command
|
|
*/
|
|
if (send_lq)
|
|
il_send_lq_cmd(il, &lq, CMD_SYNC, true);
|
|
spin_lock_irqsave(&il->sta_lock, flags_spin);
|
|
il->stations[i].used &= ~IL_STA_UCODE_INPROGRESS;
|
|
}
|
|
}
|
|
|
|
spin_unlock_irqrestore(&il->sta_lock, flags_spin);
|
|
if (!found)
|
|
D_INFO("Restoring all known stations"
|
|
" .... no stations to be restored.\n");
|
|
else
|
|
D_INFO("Restoring all known stations" " .... complete.\n");
|
|
}
|
|
EXPORT_SYMBOL(il_restore_stations);
|
|
|
|
int
|
|
il_get_free_ucode_key_idx(struct il_priv *il)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < il->sta_key_max_num; i++)
|
|
if (!test_and_set_bit(i, &il->ucode_key_table))
|
|
return i;
|
|
|
|
return WEP_INVALID_OFFSET;
|
|
}
|
|
EXPORT_SYMBOL(il_get_free_ucode_key_idx);
|
|
|
|
void
|
|
il_dealloc_bcast_stations(struct il_priv *il)
|
|
{
|
|
unsigned long flags;
|
|
int i;
|
|
|
|
spin_lock_irqsave(&il->sta_lock, flags);
|
|
for (i = 0; i < il->hw_params.max_stations; i++) {
|
|
if (!(il->stations[i].used & IL_STA_BCAST))
|
|
continue;
|
|
|
|
il->stations[i].used &= ~IL_STA_UCODE_ACTIVE;
|
|
il->num_stations--;
|
|
BUG_ON(il->num_stations < 0);
|
|
kfree(il->stations[i].lq);
|
|
il->stations[i].lq = NULL;
|
|
}
|
|
spin_unlock_irqrestore(&il->sta_lock, flags);
|
|
}
|
|
EXPORT_SYMBOL_GPL(il_dealloc_bcast_stations);
|
|
|
|
#ifdef CONFIG_IWLEGACY_DEBUG
|
|
static void
|
|
il_dump_lq_cmd(struct il_priv *il, struct il_link_quality_cmd *lq)
|
|
{
|
|
int i;
|
|
D_RATE("lq station id 0x%x\n", lq->sta_id);
|
|
D_RATE("lq ant 0x%X 0x%X\n", lq->general_params.single_stream_ant_msk,
|
|
lq->general_params.dual_stream_ant_msk);
|
|
|
|
for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++)
|
|
D_RATE("lq idx %d 0x%X\n", i, lq->rs_table[i].rate_n_flags);
|
|
}
|
|
#else
|
|
static inline void
|
|
il_dump_lq_cmd(struct il_priv *il, struct il_link_quality_cmd *lq)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
/**
|
|
* il_is_lq_table_valid() - Test one aspect of LQ cmd for validity
|
|
*
|
|
* It sometimes happens when a HT rate has been in use and we
|
|
* loose connectivity with AP then mac80211 will first tell us that the
|
|
* current channel is not HT anymore before removing the station. In such a
|
|
* scenario the RXON flags will be updated to indicate we are not
|
|
* communicating HT anymore, but the LQ command may still contain HT rates.
|
|
* Test for this to prevent driver from sending LQ command between the time
|
|
* RXON flags are updated and when LQ command is updated.
|
|
*/
|
|
static bool
|
|
il_is_lq_table_valid(struct il_priv *il, struct il_link_quality_cmd *lq)
|
|
{
|
|
int i;
|
|
|
|
if (il->ht.enabled)
|
|
return true;
|
|
|
|
D_INFO("Channel %u is not an HT channel\n", il->active.channel);
|
|
for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) {
|
|
if (le32_to_cpu(lq->rs_table[i].rate_n_flags) & RATE_MCS_HT_MSK) {
|
|
D_INFO("idx %d of LQ expects HT channel\n", i);
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* il_send_lq_cmd() - Send link quality command
|
|
* @init: This command is sent as part of station initialization right
|
|
* after station has been added.
|
|
*
|
|
* The link quality command is sent as the last step of station creation.
|
|
* This is the special case in which init is set and we call a callback in
|
|
* this case to clear the state indicating that station creation is in
|
|
* progress.
|
|
*/
|
|
int
|
|
il_send_lq_cmd(struct il_priv *il, struct il_link_quality_cmd *lq,
|
|
u8 flags, bool init)
|
|
{
|
|
int ret = 0;
|
|
unsigned long flags_spin;
|
|
|
|
struct il_host_cmd cmd = {
|
|
.id = C_TX_LINK_QUALITY_CMD,
|
|
.len = sizeof(struct il_link_quality_cmd),
|
|
.flags = flags,
|
|
.data = lq,
|
|
};
|
|
|
|
if (WARN_ON(lq->sta_id == IL_INVALID_STATION))
|
|
return -EINVAL;
|
|
|
|
spin_lock_irqsave(&il->sta_lock, flags_spin);
|
|
if (!(il->stations[lq->sta_id].used & IL_STA_DRIVER_ACTIVE)) {
|
|
spin_unlock_irqrestore(&il->sta_lock, flags_spin);
|
|
return -EINVAL;
|
|
}
|
|
spin_unlock_irqrestore(&il->sta_lock, flags_spin);
|
|
|
|
il_dump_lq_cmd(il, lq);
|
|
BUG_ON(init && (cmd.flags & CMD_ASYNC));
|
|
|
|
if (il_is_lq_table_valid(il, lq))
|
|
ret = il_send_cmd(il, &cmd);
|
|
else
|
|
ret = -EINVAL;
|
|
|
|
if (cmd.flags & CMD_ASYNC)
|
|
return ret;
|
|
|
|
if (init) {
|
|
D_INFO("init LQ command complete,"
|
|
" clearing sta addition status for sta %d\n",
|
|
lq->sta_id);
|
|
spin_lock_irqsave(&il->sta_lock, flags_spin);
|
|
il->stations[lq->sta_id].used &= ~IL_STA_UCODE_INPROGRESS;
|
|
spin_unlock_irqrestore(&il->sta_lock, flags_spin);
|
|
}
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(il_send_lq_cmd);
|
|
|
|
int
|
|
il_mac_sta_remove(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
|
|
struct ieee80211_sta *sta)
|
|
{
|
|
struct il_priv *il = hw->priv;
|
|
struct il_station_priv_common *sta_common = (void *)sta->drv_priv;
|
|
int ret;
|
|
|
|
mutex_lock(&il->mutex);
|
|
D_MAC80211("enter station %pM\n", sta->addr);
|
|
|
|
ret = il_remove_station(il, sta_common->sta_id, sta->addr);
|
|
if (ret)
|
|
IL_ERR("Error removing station %pM\n", sta->addr);
|
|
|
|
D_MAC80211("leave ret %d\n", ret);
|
|
mutex_unlock(&il->mutex);
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(il_mac_sta_remove);
|
|
|
|
/************************** RX-FUNCTIONS ****************************/
|
|
/*
|
|
* Rx theory of operation
|
|
*
|
|
* Driver allocates a circular buffer of Receive Buffer Descriptors (RBDs),
|
|
* each of which point to Receive Buffers to be filled by the NIC. These get
|
|
* used not only for Rx frames, but for any command response or notification
|
|
* from the NIC. The driver and NIC manage the Rx buffers by means
|
|
* of idxes into the circular buffer.
|
|
*
|
|
* Rx Queue Indexes
|
|
* The host/firmware share two idx registers for managing the Rx buffers.
|
|
*
|
|
* The READ idx maps to the first position that the firmware may be writing
|
|
* to -- the driver can read up to (but not including) this position and get
|
|
* good data.
|
|
* The READ idx is managed by the firmware once the card is enabled.
|
|
*
|
|
* The WRITE idx maps to the last position the driver has read from -- the
|
|
* position preceding WRITE is the last slot the firmware can place a packet.
|
|
*
|
|
* The queue is empty (no good data) if WRITE = READ - 1, and is full if
|
|
* WRITE = READ.
|
|
*
|
|
* During initialization, the host sets up the READ queue position to the first
|
|
* IDX position, and WRITE to the last (READ - 1 wrapped)
|
|
*
|
|
* When the firmware places a packet in a buffer, it will advance the READ idx
|
|
* and fire the RX interrupt. The driver can then query the READ idx and
|
|
* process as many packets as possible, moving the WRITE idx forward as it
|
|
* resets the Rx queue buffers with new memory.
|
|
*
|
|
* The management in the driver is as follows:
|
|
* + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When
|
|
* iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
|
|
* to replenish the iwl->rxq->rx_free.
|
|
* + In il_rx_replenish (scheduled) if 'processed' != 'read' then the
|
|
* iwl->rxq is replenished and the READ IDX is updated (updating the
|
|
* 'processed' and 'read' driver idxes as well)
|
|
* + A received packet is processed and handed to the kernel network stack,
|
|
* detached from the iwl->rxq. The driver 'processed' idx is updated.
|
|
* + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
|
|
* list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
|
|
* IDX is not incremented and iwl->status(RX_STALLED) is set. If there
|
|
* were enough free buffers and RX_STALLED is set it is cleared.
|
|
*
|
|
*
|
|
* Driver sequence:
|
|
*
|
|
* il_rx_queue_alloc() Allocates rx_free
|
|
* il_rx_replenish() Replenishes rx_free list from rx_used, and calls
|
|
* il_rx_queue_restock
|
|
* il_rx_queue_restock() Moves available buffers from rx_free into Rx
|
|
* queue, updates firmware pointers, and updates
|
|
* the WRITE idx. If insufficient rx_free buffers
|
|
* are available, schedules il_rx_replenish
|
|
*
|
|
* -- enable interrupts --
|
|
* ISR - il_rx() Detach il_rx_bufs from pool up to the
|
|
* READ IDX, detaching the SKB from the pool.
|
|
* Moves the packet buffer from queue to rx_used.
|
|
* Calls il_rx_queue_restock to refill any empty
|
|
* slots.
|
|
* ...
|
|
*
|
|
*/
|
|
|
|
/**
|
|
* il_rx_queue_space - Return number of free slots available in queue.
|
|
*/
|
|
int
|
|
il_rx_queue_space(const struct il_rx_queue *q)
|
|
{
|
|
int s = q->read - q->write;
|
|
if (s <= 0)
|
|
s += RX_QUEUE_SIZE;
|
|
/* keep some buffer to not confuse full and empty queue */
|
|
s -= 2;
|
|
if (s < 0)
|
|
s = 0;
|
|
return s;
|
|
}
|
|
EXPORT_SYMBOL(il_rx_queue_space);
|
|
|
|
/**
|
|
* il_rx_queue_update_write_ptr - Update the write pointer for the RX queue
|
|
*/
|
|
void
|
|
il_rx_queue_update_write_ptr(struct il_priv *il, struct il_rx_queue *q)
|
|
{
|
|
unsigned long flags;
|
|
u32 rx_wrt_ptr_reg = il->hw_params.rx_wrt_ptr_reg;
|
|
u32 reg;
|
|
|
|
spin_lock_irqsave(&q->lock, flags);
|
|
|
|
if (q->need_update == 0)
|
|
goto exit_unlock;
|
|
|
|
/* If power-saving is in use, make sure device is awake */
|
|
if (test_bit(S_POWER_PMI, &il->status)) {
|
|
reg = _il_rd(il, CSR_UCODE_DRV_GP1);
|
|
|
|
if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
|
|
D_INFO("Rx queue requesting wakeup," " GP1 = 0x%x\n",
|
|
reg);
|
|
il_set_bit(il, CSR_GP_CNTRL,
|
|
CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
|
|
goto exit_unlock;
|
|
}
|
|
|
|
q->write_actual = (q->write & ~0x7);
|
|
il_wr(il, rx_wrt_ptr_reg, q->write_actual);
|
|
|
|
/* Else device is assumed to be awake */
|
|
} else {
|
|
/* Device expects a multiple of 8 */
|
|
q->write_actual = (q->write & ~0x7);
|
|
il_wr(il, rx_wrt_ptr_reg, q->write_actual);
|
|
}
|
|
|
|
q->need_update = 0;
|
|
|
|
exit_unlock:
|
|
spin_unlock_irqrestore(&q->lock, flags);
|
|
}
|
|
EXPORT_SYMBOL(il_rx_queue_update_write_ptr);
|
|
|
|
int
|
|
il_rx_queue_alloc(struct il_priv *il)
|
|
{
|
|
struct il_rx_queue *rxq = &il->rxq;
|
|
struct device *dev = &il->pci_dev->dev;
|
|
int i;
|
|
|
|
spin_lock_init(&rxq->lock);
|
|
INIT_LIST_HEAD(&rxq->rx_free);
|
|
INIT_LIST_HEAD(&rxq->rx_used);
|
|
|
|
/* Alloc the circular buffer of Read Buffer Descriptors (RBDs) */
|
|
rxq->bd = dma_alloc_coherent(dev, 4 * RX_QUEUE_SIZE, &rxq->bd_dma,
|
|
GFP_KERNEL);
|
|
if (!rxq->bd)
|
|
goto err_bd;
|
|
|
|
rxq->rb_stts = dma_alloc_coherent(dev, sizeof(struct il_rb_status),
|
|
&rxq->rb_stts_dma, GFP_KERNEL);
|
|
if (!rxq->rb_stts)
|
|
goto err_rb;
|
|
|
|
/* Fill the rx_used queue with _all_ of the Rx buffers */
|
|
for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++)
|
|
list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
|
|
|
|
/* Set us so that we have processed and used all buffers, but have
|
|
* not restocked the Rx queue with fresh buffers */
|
|
rxq->read = rxq->write = 0;
|
|
rxq->write_actual = 0;
|
|
rxq->free_count = 0;
|
|
rxq->need_update = 0;
|
|
return 0;
|
|
|
|
err_rb:
|
|
dma_free_coherent(&il->pci_dev->dev, 4 * RX_QUEUE_SIZE, rxq->bd,
|
|
rxq->bd_dma);
|
|
err_bd:
|
|
return -ENOMEM;
|
|
}
|
|
EXPORT_SYMBOL(il_rx_queue_alloc);
|
|
|
|
void
|
|
il_hdl_spectrum_measurement(struct il_priv *il, struct il_rx_buf *rxb)
|
|
{
|
|
struct il_rx_pkt *pkt = rxb_addr(rxb);
|
|
struct il_spectrum_notification *report = &(pkt->u.spectrum_notif);
|
|
|
|
if (!report->state) {
|
|
D_11H("Spectrum Measure Notification: Start\n");
|
|
return;
|
|
}
|
|
|
|
memcpy(&il->measure_report, report, sizeof(*report));
|
|
il->measurement_status |= MEASUREMENT_READY;
|
|
}
|
|
EXPORT_SYMBOL(il_hdl_spectrum_measurement);
|
|
|
|
/*
|
|
* returns non-zero if packet should be dropped
|
|
*/
|
|
int
|
|
il_set_decrypted_flag(struct il_priv *il, struct ieee80211_hdr *hdr,
|
|
u32 decrypt_res, struct ieee80211_rx_status *stats)
|
|
{
|
|
u16 fc = le16_to_cpu(hdr->frame_control);
|
|
|
|
/*
|
|
* All contexts have the same setting here due to it being
|
|
* a module parameter, so OK to check any context.
|
|
*/
|
|
if (il->active.filter_flags & RXON_FILTER_DIS_DECRYPT_MSK)
|
|
return 0;
|
|
|
|
if (!(fc & IEEE80211_FCTL_PROTECTED))
|
|
return 0;
|
|
|
|
D_RX("decrypt_res:0x%x\n", decrypt_res);
|
|
switch (decrypt_res & RX_RES_STATUS_SEC_TYPE_MSK) {
|
|
case RX_RES_STATUS_SEC_TYPE_TKIP:
|
|
/* The uCode has got a bad phase 1 Key, pushes the packet.
|
|
* Decryption will be done in SW. */
|
|
if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
|
|
RX_RES_STATUS_BAD_KEY_TTAK)
|
|
break;
|
|
|
|
case RX_RES_STATUS_SEC_TYPE_WEP:
|
|
if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
|
|
RX_RES_STATUS_BAD_ICV_MIC) {
|
|
/* bad ICV, the packet is destroyed since the
|
|
* decryption is inplace, drop it */
|
|
D_RX("Packet destroyed\n");
|
|
return -1;
|
|
}
|
|
case RX_RES_STATUS_SEC_TYPE_CCMP:
|
|
if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
|
|
RX_RES_STATUS_DECRYPT_OK) {
|
|
D_RX("hw decrypt successfully!!!\n");
|
|
stats->flag |= RX_FLAG_DECRYPTED;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(il_set_decrypted_flag);
|
|
|
|
/**
|
|
* il_txq_update_write_ptr - Send new write idx to hardware
|
|
*/
|
|
void
|
|
il_txq_update_write_ptr(struct il_priv *il, struct il_tx_queue *txq)
|
|
{
|
|
u32 reg = 0;
|
|
int txq_id = txq->q.id;
|
|
|
|
if (txq->need_update == 0)
|
|
return;
|
|
|
|
/* if we're trying to save power */
|
|
if (test_bit(S_POWER_PMI, &il->status)) {
|
|
/* wake up nic if it's powered down ...
|
|
* uCode will wake up, and interrupt us again, so next
|
|
* time we'll skip this part. */
|
|
reg = _il_rd(il, CSR_UCODE_DRV_GP1);
|
|
|
|
if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
|
|
D_INFO("Tx queue %d requesting wakeup," " GP1 = 0x%x\n",
|
|
txq_id, reg);
|
|
il_set_bit(il, CSR_GP_CNTRL,
|
|
CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
|
|
return;
|
|
}
|
|
|
|
il_wr(il, HBUS_TARG_WRPTR, txq->q.write_ptr | (txq_id << 8));
|
|
|
|
/*
|
|
* else not in power-save mode,
|
|
* uCode will never sleep when we're
|
|
* trying to tx (during RFKILL, we're not trying to tx).
|
|
*/
|
|
} else
|
|
_il_wr(il, HBUS_TARG_WRPTR, txq->q.write_ptr | (txq_id << 8));
|
|
txq->need_update = 0;
|
|
}
|
|
EXPORT_SYMBOL(il_txq_update_write_ptr);
|
|
|
|
/**
|
|
* il_tx_queue_unmap - Unmap any remaining DMA mappings and free skb's
|
|
*/
|
|
void
|
|
il_tx_queue_unmap(struct il_priv *il, int txq_id)
|
|
{
|
|
struct il_tx_queue *txq = &il->txq[txq_id];
|
|
struct il_queue *q = &txq->q;
|
|
|
|
if (q->n_bd == 0)
|
|
return;
|
|
|
|
while (q->write_ptr != q->read_ptr) {
|
|
il->ops->txq_free_tfd(il, txq);
|
|
q->read_ptr = il_queue_inc_wrap(q->read_ptr, q->n_bd);
|
|
}
|
|
}
|
|
EXPORT_SYMBOL(il_tx_queue_unmap);
|
|
|
|
/**
|
|
* il_tx_queue_free - Deallocate DMA queue.
|
|
* @txq: Transmit queue to deallocate.
|
|
*
|
|
* Empty queue by removing and destroying all BD's.
|
|
* Free all buffers.
|
|
* 0-fill, but do not free "txq" descriptor structure.
|
|
*/
|
|
void
|
|
il_tx_queue_free(struct il_priv *il, int txq_id)
|
|
{
|
|
struct il_tx_queue *txq = &il->txq[txq_id];
|
|
struct device *dev = &il->pci_dev->dev;
|
|
int i;
|
|
|
|
il_tx_queue_unmap(il, txq_id);
|
|
|
|
/* De-alloc array of command/tx buffers */
|
|
for (i = 0; i < TFD_TX_CMD_SLOTS; i++)
|
|
kfree(txq->cmd[i]);
|
|
|
|
/* De-alloc circular buffer of TFDs */
|
|
if (txq->q.n_bd)
|
|
dma_free_coherent(dev, il->hw_params.tfd_size * txq->q.n_bd,
|
|
txq->tfds, txq->q.dma_addr);
|
|
|
|
/* De-alloc array of per-TFD driver data */
|
|
kfree(txq->skbs);
|
|
txq->skbs = NULL;
|
|
|
|
/* deallocate arrays */
|
|
kfree(txq->cmd);
|
|
kfree(txq->meta);
|
|
txq->cmd = NULL;
|
|
txq->meta = NULL;
|
|
|
|
/* 0-fill queue descriptor structure */
|
|
memset(txq, 0, sizeof(*txq));
|
|
}
|
|
EXPORT_SYMBOL(il_tx_queue_free);
|
|
|
|
/**
|
|
* il_cmd_queue_unmap - Unmap any remaining DMA mappings from command queue
|
|
*/
|
|
void
|
|
il_cmd_queue_unmap(struct il_priv *il)
|
|
{
|
|
struct il_tx_queue *txq = &il->txq[il->cmd_queue];
|
|
struct il_queue *q = &txq->q;
|
|
int i;
|
|
|
|
if (q->n_bd == 0)
|
|
return;
|
|
|
|
while (q->read_ptr != q->write_ptr) {
|
|
i = il_get_cmd_idx(q, q->read_ptr, 0);
|
|
|
|
if (txq->meta[i].flags & CMD_MAPPED) {
|
|
pci_unmap_single(il->pci_dev,
|
|
dma_unmap_addr(&txq->meta[i], mapping),
|
|
dma_unmap_len(&txq->meta[i], len),
|
|
PCI_DMA_BIDIRECTIONAL);
|
|
txq->meta[i].flags = 0;
|
|
}
|
|
|
|
q->read_ptr = il_queue_inc_wrap(q->read_ptr, q->n_bd);
|
|
}
|
|
|
|
i = q->n_win;
|
|
if (txq->meta[i].flags & CMD_MAPPED) {
|
|
pci_unmap_single(il->pci_dev,
|
|
dma_unmap_addr(&txq->meta[i], mapping),
|
|
dma_unmap_len(&txq->meta[i], len),
|
|
PCI_DMA_BIDIRECTIONAL);
|
|
txq->meta[i].flags = 0;
|
|
}
|
|
}
|
|
EXPORT_SYMBOL(il_cmd_queue_unmap);
|
|
|
|
/**
|
|
* il_cmd_queue_free - Deallocate DMA queue.
|
|
* @txq: Transmit queue to deallocate.
|
|
*
|
|
* Empty queue by removing and destroying all BD's.
|
|
* Free all buffers.
|
|
* 0-fill, but do not free "txq" descriptor structure.
|
|
*/
|
|
void
|
|
il_cmd_queue_free(struct il_priv *il)
|
|
{
|
|
struct il_tx_queue *txq = &il->txq[il->cmd_queue];
|
|
struct device *dev = &il->pci_dev->dev;
|
|
int i;
|
|
|
|
il_cmd_queue_unmap(il);
|
|
|
|
/* De-alloc array of command/tx buffers */
|
|
for (i = 0; i <= TFD_CMD_SLOTS; i++)
|
|
kfree(txq->cmd[i]);
|
|
|
|
/* De-alloc circular buffer of TFDs */
|
|
if (txq->q.n_bd)
|
|
dma_free_coherent(dev, il->hw_params.tfd_size * txq->q.n_bd,
|
|
txq->tfds, txq->q.dma_addr);
|
|
|
|
/* deallocate arrays */
|
|
kfree(txq->cmd);
|
|
kfree(txq->meta);
|
|
txq->cmd = NULL;
|
|
txq->meta = NULL;
|
|
|
|
/* 0-fill queue descriptor structure */
|
|
memset(txq, 0, sizeof(*txq));
|
|
}
|
|
EXPORT_SYMBOL(il_cmd_queue_free);
|
|
|
|
/*************** DMA-QUEUE-GENERAL-FUNCTIONS *****
|
|
* DMA services
|
|
*
|
|
* Theory of operation
|
|
*
|
|
* A Tx or Rx queue resides in host DRAM, and is comprised of a circular buffer
|
|
* of buffer descriptors, each of which points to one or more data buffers for
|
|
* the device to read from or fill. Driver and device exchange status of each
|
|
* queue via "read" and "write" pointers. Driver keeps minimum of 2 empty
|
|
* entries in each circular buffer, to protect against confusing empty and full
|
|
* queue states.
|
|
*
|
|
* The device reads or writes the data in the queues via the device's several
|
|
* DMA/FIFO channels. Each queue is mapped to a single DMA channel.
|
|
*
|
|
* For Tx queue, there are low mark and high mark limits. If, after queuing
|
|
* the packet for Tx, free space become < low mark, Tx queue stopped. When
|
|
* reclaiming packets (on 'tx done IRQ), if free space become > high mark,
|
|
* Tx queue resumed.
|
|
*
|
|
* See more detailed info in 4965.h.
|
|
***************************************************/
|
|
|
|
int
|
|
il_queue_space(const struct il_queue *q)
|
|
{
|
|
int s = q->read_ptr - q->write_ptr;
|
|
|
|
if (q->read_ptr > q->write_ptr)
|
|
s -= q->n_bd;
|
|
|
|
if (s <= 0)
|
|
s += q->n_win;
|
|
/* keep some reserve to not confuse empty and full situations */
|
|
s -= 2;
|
|
if (s < 0)
|
|
s = 0;
|
|
return s;
|
|
}
|
|
EXPORT_SYMBOL(il_queue_space);
|
|
|
|
|
|
/**
|
|
* il_queue_init - Initialize queue's high/low-water and read/write idxes
|
|
*/
|
|
static int
|
|
il_queue_init(struct il_priv *il, struct il_queue *q, int slots, u32 id)
|
|
{
|
|
/*
|
|
* TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise
|
|
* il_queue_inc_wrap and il_queue_dec_wrap are broken.
|
|
*/
|
|
BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX & (TFD_QUEUE_SIZE_MAX - 1));
|
|
/* FIXME: remove q->n_bd */
|
|
q->n_bd = TFD_QUEUE_SIZE_MAX;
|
|
|
|
q->n_win = slots;
|
|
q->id = id;
|
|
|
|
/* slots_must be power-of-two size, otherwise
|
|
* il_get_cmd_idx is broken. */
|
|
BUG_ON(!is_power_of_2(slots));
|
|
|
|
q->low_mark = q->n_win / 4;
|
|
if (q->low_mark < 4)
|
|
q->low_mark = 4;
|
|
|
|
q->high_mark = q->n_win / 8;
|
|
if (q->high_mark < 2)
|
|
q->high_mark = 2;
|
|
|
|
q->write_ptr = q->read_ptr = 0;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* il_tx_queue_alloc - Alloc driver data and TFD CB for one Tx/cmd queue
|
|
*/
|
|
static int
|
|
il_tx_queue_alloc(struct il_priv *il, struct il_tx_queue *txq, u32 id)
|
|
{
|
|
struct device *dev = &il->pci_dev->dev;
|
|
size_t tfd_sz = il->hw_params.tfd_size * TFD_QUEUE_SIZE_MAX;
|
|
|
|
/* Driver ilate data, only for Tx (not command) queues,
|
|
* not shared with device. */
|
|
if (id != il->cmd_queue) {
|
|
txq->skbs = kcalloc(TFD_QUEUE_SIZE_MAX, sizeof(struct skb *),
|
|
GFP_KERNEL);
|
|
if (!txq->skbs) {
|
|
IL_ERR("Fail to alloc skbs\n");
|
|
goto error;
|
|
}
|
|
} else
|
|
txq->skbs = NULL;
|
|
|
|
/* Circular buffer of transmit frame descriptors (TFDs),
|
|
* shared with device */
|
|
txq->tfds =
|
|
dma_alloc_coherent(dev, tfd_sz, &txq->q.dma_addr, GFP_KERNEL);
|
|
if (!txq->tfds)
|
|
goto error;
|
|
|
|
txq->q.id = id;
|
|
|
|
return 0;
|
|
|
|
error:
|
|
kfree(txq->skbs);
|
|
txq->skbs = NULL;
|
|
|
|
return -ENOMEM;
|
|
}
|
|
|
|
/**
|
|
* il_tx_queue_init - Allocate and initialize one tx/cmd queue
|
|
*/
|
|
int
|
|
il_tx_queue_init(struct il_priv *il, u32 txq_id)
|
|
{
|
|
int i, len, ret;
|
|
int slots, actual_slots;
|
|
struct il_tx_queue *txq = &il->txq[txq_id];
|
|
|
|
/*
|
|
* Alloc buffer array for commands (Tx or other types of commands).
|
|
* For the command queue (#4/#9), allocate command space + one big
|
|
* command for scan, since scan command is very huge; the system will
|
|
* not have two scans at the same time, so only one is needed.
|
|
* For normal Tx queues (all other queues), no super-size command
|
|
* space is needed.
|
|
*/
|
|
if (txq_id == il->cmd_queue) {
|
|
slots = TFD_CMD_SLOTS;
|
|
actual_slots = slots + 1;
|
|
} else {
|
|
slots = TFD_TX_CMD_SLOTS;
|
|
actual_slots = slots;
|
|
}
|
|
|
|
txq->meta =
|
|
kzalloc(sizeof(struct il_cmd_meta) * actual_slots, GFP_KERNEL);
|
|
txq->cmd =
|
|
kzalloc(sizeof(struct il_device_cmd *) * actual_slots, GFP_KERNEL);
|
|
|
|
if (!txq->meta || !txq->cmd)
|
|
goto out_free_arrays;
|
|
|
|
len = sizeof(struct il_device_cmd);
|
|
for (i = 0; i < actual_slots; i++) {
|
|
/* only happens for cmd queue */
|
|
if (i == slots)
|
|
len = IL_MAX_CMD_SIZE;
|
|
|
|
txq->cmd[i] = kmalloc(len, GFP_KERNEL);
|
|
if (!txq->cmd[i])
|
|
goto err;
|
|
}
|
|
|
|
/* Alloc driver data array and TFD circular buffer */
|
|
ret = il_tx_queue_alloc(il, txq, txq_id);
|
|
if (ret)
|
|
goto err;
|
|
|
|
txq->need_update = 0;
|
|
|
|
/*
|
|
* For the default queues 0-3, set up the swq_id
|
|
* already -- all others need to get one later
|
|
* (if they need one at all).
|
|
*/
|
|
if (txq_id < 4)
|
|
il_set_swq_id(txq, txq_id, txq_id);
|
|
|
|
/* Initialize queue's high/low-water marks, and head/tail idxes */
|
|
il_queue_init(il, &txq->q, slots, txq_id);
|
|
|
|
/* Tell device where to find queue */
|
|
il->ops->txq_init(il, txq);
|
|
|
|
return 0;
|
|
err:
|
|
for (i = 0; i < actual_slots; i++)
|
|
kfree(txq->cmd[i]);
|
|
out_free_arrays:
|
|
kfree(txq->meta);
|
|
kfree(txq->cmd);
|
|
|
|
return -ENOMEM;
|
|
}
|
|
EXPORT_SYMBOL(il_tx_queue_init);
|
|
|
|
void
|
|
il_tx_queue_reset(struct il_priv *il, u32 txq_id)
|
|
{
|
|
int slots, actual_slots;
|
|
struct il_tx_queue *txq = &il->txq[txq_id];
|
|
|
|
if (txq_id == il->cmd_queue) {
|
|
slots = TFD_CMD_SLOTS;
|
|
actual_slots = TFD_CMD_SLOTS + 1;
|
|
} else {
|
|
slots = TFD_TX_CMD_SLOTS;
|
|
actual_slots = TFD_TX_CMD_SLOTS;
|
|
}
|
|
|
|
memset(txq->meta, 0, sizeof(struct il_cmd_meta) * actual_slots);
|
|
txq->need_update = 0;
|
|
|
|
/* Initialize queue's high/low-water marks, and head/tail idxes */
|
|
il_queue_init(il, &txq->q, slots, txq_id);
|
|
|
|
/* Tell device where to find queue */
|
|
il->ops->txq_init(il, txq);
|
|
}
|
|
EXPORT_SYMBOL(il_tx_queue_reset);
|
|
|
|
/*************** HOST COMMAND QUEUE FUNCTIONS *****/
|
|
|
|
/**
|
|
* il_enqueue_hcmd - enqueue a uCode command
|
|
* @il: device ilate data point
|
|
* @cmd: a point to the ucode command structure
|
|
*
|
|
* The function returns < 0 values to indicate the operation is
|
|
* failed. On success, it turns the idx (> 0) of command in the
|
|
* command queue.
|
|
*/
|
|
int
|
|
il_enqueue_hcmd(struct il_priv *il, struct il_host_cmd *cmd)
|
|
{
|
|
struct il_tx_queue *txq = &il->txq[il->cmd_queue];
|
|
struct il_queue *q = &txq->q;
|
|
struct il_device_cmd *out_cmd;
|
|
struct il_cmd_meta *out_meta;
|
|
dma_addr_t phys_addr;
|
|
unsigned long flags;
|
|
int len;
|
|
u32 idx;
|
|
u16 fix_size;
|
|
|
|
cmd->len = il->ops->get_hcmd_size(cmd->id, cmd->len);
|
|
fix_size = (u16) (cmd->len + sizeof(out_cmd->hdr));
|
|
|
|
/* If any of the command structures end up being larger than
|
|
* the TFD_MAX_PAYLOAD_SIZE, and it sent as a 'small' command then
|
|
* we will need to increase the size of the TFD entries
|
|
* Also, check to see if command buffer should not exceed the size
|
|
* of device_cmd and max_cmd_size. */
|
|
BUG_ON((fix_size > TFD_MAX_PAYLOAD_SIZE) &&
|
|
!(cmd->flags & CMD_SIZE_HUGE));
|
|
BUG_ON(fix_size > IL_MAX_CMD_SIZE);
|
|
|
|
if (il_is_rfkill(il) || il_is_ctkill(il)) {
|
|
IL_WARN("Not sending command - %s KILL\n",
|
|
il_is_rfkill(il) ? "RF" : "CT");
|
|
return -EIO;
|
|
}
|
|
|
|
spin_lock_irqsave(&il->hcmd_lock, flags);
|
|
|
|
if (il_queue_space(q) < ((cmd->flags & CMD_ASYNC) ? 2 : 1)) {
|
|
spin_unlock_irqrestore(&il->hcmd_lock, flags);
|
|
|
|
IL_ERR("Restarting adapter due to command queue full\n");
|
|
queue_work(il->workqueue, &il->restart);
|
|
return -ENOSPC;
|
|
}
|
|
|
|
idx = il_get_cmd_idx(q, q->write_ptr, cmd->flags & CMD_SIZE_HUGE);
|
|
out_cmd = txq->cmd[idx];
|
|
out_meta = &txq->meta[idx];
|
|
|
|
if (WARN_ON(out_meta->flags & CMD_MAPPED)) {
|
|
spin_unlock_irqrestore(&il->hcmd_lock, flags);
|
|
return -ENOSPC;
|
|
}
|
|
|
|
memset(out_meta, 0, sizeof(*out_meta)); /* re-initialize to NULL */
|
|
out_meta->flags = cmd->flags | CMD_MAPPED;
|
|
if (cmd->flags & CMD_WANT_SKB)
|
|
out_meta->source = cmd;
|
|
if (cmd->flags & CMD_ASYNC)
|
|
out_meta->callback = cmd->callback;
|
|
|
|
out_cmd->hdr.cmd = cmd->id;
|
|
memcpy(&out_cmd->cmd.payload, cmd->data, cmd->len);
|
|
|
|
/* At this point, the out_cmd now has all of the incoming cmd
|
|
* information */
|
|
|
|
out_cmd->hdr.flags = 0;
|
|
out_cmd->hdr.sequence =
|
|
cpu_to_le16(QUEUE_TO_SEQ(il->cmd_queue) | IDX_TO_SEQ(q->write_ptr));
|
|
if (cmd->flags & CMD_SIZE_HUGE)
|
|
out_cmd->hdr.sequence |= SEQ_HUGE_FRAME;
|
|
len = sizeof(struct il_device_cmd);
|
|
if (idx == TFD_CMD_SLOTS)
|
|
len = IL_MAX_CMD_SIZE;
|
|
|
|
#ifdef CONFIG_IWLEGACY_DEBUG
|
|
switch (out_cmd->hdr.cmd) {
|
|
case C_TX_LINK_QUALITY_CMD:
|
|
case C_SENSITIVITY:
|
|
D_HC_DUMP("Sending command %s (#%x), seq: 0x%04X, "
|
|
"%d bytes at %d[%d]:%d\n",
|
|
il_get_cmd_string(out_cmd->hdr.cmd), out_cmd->hdr.cmd,
|
|
le16_to_cpu(out_cmd->hdr.sequence), fix_size,
|
|
q->write_ptr, idx, il->cmd_queue);
|
|
break;
|
|
default:
|
|
D_HC("Sending command %s (#%x), seq: 0x%04X, "
|
|
"%d bytes at %d[%d]:%d\n",
|
|
il_get_cmd_string(out_cmd->hdr.cmd), out_cmd->hdr.cmd,
|
|
le16_to_cpu(out_cmd->hdr.sequence), fix_size, q->write_ptr,
|
|
idx, il->cmd_queue);
|
|
}
|
|
#endif
|
|
|
|
phys_addr =
|
|
pci_map_single(il->pci_dev, &out_cmd->hdr, fix_size,
|
|
PCI_DMA_BIDIRECTIONAL);
|
|
if (unlikely(pci_dma_mapping_error(il->pci_dev, phys_addr))) {
|
|
idx = -ENOMEM;
|
|
goto out;
|
|
}
|
|
dma_unmap_addr_set(out_meta, mapping, phys_addr);
|
|
dma_unmap_len_set(out_meta, len, fix_size);
|
|
|
|
txq->need_update = 1;
|
|
|
|
if (il->ops->txq_update_byte_cnt_tbl)
|
|
/* Set up entry in queue's byte count circular buffer */
|
|
il->ops->txq_update_byte_cnt_tbl(il, txq, 0);
|
|
|
|
il->ops->txq_attach_buf_to_tfd(il, txq, phys_addr, fix_size, 1,
|
|
U32_PAD(cmd->len));
|
|
|
|
/* Increment and update queue's write idx */
|
|
q->write_ptr = il_queue_inc_wrap(q->write_ptr, q->n_bd);
|
|
il_txq_update_write_ptr(il, txq);
|
|
|
|
out:
|
|
spin_unlock_irqrestore(&il->hcmd_lock, flags);
|
|
return idx;
|
|
}
|
|
|
|
/**
|
|
* il_hcmd_queue_reclaim - Reclaim TX command queue entries already Tx'd
|
|
*
|
|
* When FW advances 'R' idx, all entries between old and new 'R' idx
|
|
* need to be reclaimed. As result, some free space forms. If there is
|
|
* enough free space (> low mark), wake the stack that feeds us.
|
|
*/
|
|
static void
|
|
il_hcmd_queue_reclaim(struct il_priv *il, int txq_id, int idx, int cmd_idx)
|
|
{
|
|
struct il_tx_queue *txq = &il->txq[txq_id];
|
|
struct il_queue *q = &txq->q;
|
|
int nfreed = 0;
|
|
|
|
if (idx >= q->n_bd || il_queue_used(q, idx) == 0) {
|
|
IL_ERR("Read idx for DMA queue txq id (%d), idx %d, "
|
|
"is out of range [0-%d] %d %d.\n", txq_id, idx, q->n_bd,
|
|
q->write_ptr, q->read_ptr);
|
|
return;
|
|
}
|
|
|
|
for (idx = il_queue_inc_wrap(idx, q->n_bd); q->read_ptr != idx;
|
|
q->read_ptr = il_queue_inc_wrap(q->read_ptr, q->n_bd)) {
|
|
|
|
if (nfreed++ > 0) {
|
|
IL_ERR("HCMD skipped: idx (%d) %d %d\n", idx,
|
|
q->write_ptr, q->read_ptr);
|
|
queue_work(il->workqueue, &il->restart);
|
|
}
|
|
|
|
}
|
|
}
|
|
|
|
/**
|
|
* il_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
|
|
* @rxb: Rx buffer to reclaim
|
|
*
|
|
* If an Rx buffer has an async callback associated with it the callback
|
|
* will be executed. The attached skb (if present) will only be freed
|
|
* if the callback returns 1
|
|
*/
|
|
void
|
|
il_tx_cmd_complete(struct il_priv *il, struct il_rx_buf *rxb)
|
|
{
|
|
struct il_rx_pkt *pkt = rxb_addr(rxb);
|
|
u16 sequence = le16_to_cpu(pkt->hdr.sequence);
|
|
int txq_id = SEQ_TO_QUEUE(sequence);
|
|
int idx = SEQ_TO_IDX(sequence);
|
|
int cmd_idx;
|
|
bool huge = !!(pkt->hdr.sequence & SEQ_HUGE_FRAME);
|
|
struct il_device_cmd *cmd;
|
|
struct il_cmd_meta *meta;
|
|
struct il_tx_queue *txq = &il->txq[il->cmd_queue];
|
|
unsigned long flags;
|
|
|
|
/* If a Tx command is being handled and it isn't in the actual
|
|
* command queue then there a command routing bug has been introduced
|
|
* in the queue management code. */
|
|
if (WARN
|
|
(txq_id != il->cmd_queue,
|
|
"wrong command queue %d (should be %d), sequence 0x%X readp=%d writep=%d\n",
|
|
txq_id, il->cmd_queue, sequence, il->txq[il->cmd_queue].q.read_ptr,
|
|
il->txq[il->cmd_queue].q.write_ptr)) {
|
|
il_print_hex_error(il, pkt, 32);
|
|
return;
|
|
}
|
|
|
|
cmd_idx = il_get_cmd_idx(&txq->q, idx, huge);
|
|
cmd = txq->cmd[cmd_idx];
|
|
meta = &txq->meta[cmd_idx];
|
|
|
|
txq->time_stamp = jiffies;
|
|
|
|
pci_unmap_single(il->pci_dev, dma_unmap_addr(meta, mapping),
|
|
dma_unmap_len(meta, len), PCI_DMA_BIDIRECTIONAL);
|
|
|
|
/* Input error checking is done when commands are added to queue. */
|
|
if (meta->flags & CMD_WANT_SKB) {
|
|
meta->source->reply_page = (unsigned long)rxb_addr(rxb);
|
|
rxb->page = NULL;
|
|
} else if (meta->callback)
|
|
meta->callback(il, cmd, pkt);
|
|
|
|
spin_lock_irqsave(&il->hcmd_lock, flags);
|
|
|
|
il_hcmd_queue_reclaim(il, txq_id, idx, cmd_idx);
|
|
|
|
if (!(meta->flags & CMD_ASYNC)) {
|
|
clear_bit(S_HCMD_ACTIVE, &il->status);
|
|
D_INFO("Clearing HCMD_ACTIVE for command %s\n",
|
|
il_get_cmd_string(cmd->hdr.cmd));
|
|
wake_up(&il->wait_command_queue);
|
|
}
|
|
|
|
/* Mark as unmapped */
|
|
meta->flags = 0;
|
|
|
|
spin_unlock_irqrestore(&il->hcmd_lock, flags);
|
|
}
|
|
EXPORT_SYMBOL(il_tx_cmd_complete);
|
|
|
|
MODULE_DESCRIPTION("iwl-legacy: common functions for 3945 and 4965");
|
|
MODULE_VERSION(IWLWIFI_VERSION);
|
|
MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
|
|
MODULE_LICENSE("GPL");
|
|
|
|
/*
|
|
* set bt_coex_active to true, uCode will do kill/defer
|
|
* every time the priority line is asserted (BT is sending signals on the
|
|
* priority line in the PCIx).
|
|
* set bt_coex_active to false, uCode will ignore the BT activity and
|
|
* perform the normal operation
|
|
*
|
|
* User might experience transmit issue on some platform due to WiFi/BT
|
|
* co-exist problem. The possible behaviors are:
|
|
* Able to scan and finding all the available AP
|
|
* Not able to associate with any AP
|
|
* On those platforms, WiFi communication can be restored by set
|
|
* "bt_coex_active" module parameter to "false"
|
|
*
|
|
* default: bt_coex_active = true (BT_COEX_ENABLE)
|
|
*/
|
|
static bool bt_coex_active = true;
|
|
module_param(bt_coex_active, bool, S_IRUGO);
|
|
MODULE_PARM_DESC(bt_coex_active, "enable wifi/bluetooth co-exist");
|
|
|
|
u32 il_debug_level;
|
|
EXPORT_SYMBOL(il_debug_level);
|
|
|
|
const u8 il_bcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
|
|
EXPORT_SYMBOL(il_bcast_addr);
|
|
|
|
#define MAX_BIT_RATE_40_MHZ 150 /* Mbps */
|
|
#define MAX_BIT_RATE_20_MHZ 72 /* Mbps */
|
|
static void
|
|
il_init_ht_hw_capab(const struct il_priv *il,
|
|
struct ieee80211_sta_ht_cap *ht_info,
|
|
enum ieee80211_band band)
|
|
{
|
|
u16 max_bit_rate = 0;
|
|
u8 rx_chains_num = il->hw_params.rx_chains_num;
|
|
u8 tx_chains_num = il->hw_params.tx_chains_num;
|
|
|
|
ht_info->cap = 0;
|
|
memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
|
|
|
|
ht_info->ht_supported = true;
|
|
|
|
ht_info->cap |= IEEE80211_HT_CAP_SGI_20;
|
|
max_bit_rate = MAX_BIT_RATE_20_MHZ;
|
|
if (il->hw_params.ht40_channel & BIT(band)) {
|
|
ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
|
|
ht_info->cap |= IEEE80211_HT_CAP_SGI_40;
|
|
ht_info->mcs.rx_mask[4] = 0x01;
|
|
max_bit_rate = MAX_BIT_RATE_40_MHZ;
|
|
}
|
|
|
|
if (il->cfg->mod_params->amsdu_size_8K)
|
|
ht_info->cap |= IEEE80211_HT_CAP_MAX_AMSDU;
|
|
|
|
ht_info->ampdu_factor = CFG_HT_RX_AMPDU_FACTOR_DEF;
|
|
ht_info->ampdu_density = CFG_HT_MPDU_DENSITY_DEF;
|
|
|
|
ht_info->mcs.rx_mask[0] = 0xFF;
|
|
if (rx_chains_num >= 2)
|
|
ht_info->mcs.rx_mask[1] = 0xFF;
|
|
if (rx_chains_num >= 3)
|
|
ht_info->mcs.rx_mask[2] = 0xFF;
|
|
|
|
/* Highest supported Rx data rate */
|
|
max_bit_rate *= rx_chains_num;
|
|
WARN_ON(max_bit_rate & ~IEEE80211_HT_MCS_RX_HIGHEST_MASK);
|
|
ht_info->mcs.rx_highest = cpu_to_le16(max_bit_rate);
|
|
|
|
/* Tx MCS capabilities */
|
|
ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
|
|
if (tx_chains_num != rx_chains_num) {
|
|
ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
|
|
ht_info->mcs.tx_params |=
|
|
((tx_chains_num -
|
|
1) << IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* il_init_geos - Initialize mac80211's geo/channel info based from eeprom
|
|
*/
|
|
int
|
|
il_init_geos(struct il_priv *il)
|
|
{
|
|
struct il_channel_info *ch;
|
|
struct ieee80211_supported_band *sband;
|
|
struct ieee80211_channel *channels;
|
|
struct ieee80211_channel *geo_ch;
|
|
struct ieee80211_rate *rates;
|
|
int i = 0;
|
|
s8 max_tx_power = 0;
|
|
|
|
if (il->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
|
|
il->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
|
|
D_INFO("Geography modes already initialized.\n");
|
|
set_bit(S_GEO_CONFIGURED, &il->status);
|
|
return 0;
|
|
}
|
|
|
|
channels =
|
|
kzalloc(sizeof(struct ieee80211_channel) * il->channel_count,
|
|
GFP_KERNEL);
|
|
if (!channels)
|
|
return -ENOMEM;
|
|
|
|
rates =
|
|
kzalloc((sizeof(struct ieee80211_rate) * RATE_COUNT_LEGACY),
|
|
GFP_KERNEL);
|
|
if (!rates) {
|
|
kfree(channels);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
/* 5.2GHz channels start after the 2.4GHz channels */
|
|
sband = &il->bands[IEEE80211_BAND_5GHZ];
|
|
sband->channels = &channels[ARRAY_SIZE(il_eeprom_band_1)];
|
|
/* just OFDM */
|
|
sband->bitrates = &rates[IL_FIRST_OFDM_RATE];
|
|
sband->n_bitrates = RATE_COUNT_LEGACY - IL_FIRST_OFDM_RATE;
|
|
|
|
if (il->cfg->sku & IL_SKU_N)
|
|
il_init_ht_hw_capab(il, &sband->ht_cap, IEEE80211_BAND_5GHZ);
|
|
|
|
sband = &il->bands[IEEE80211_BAND_2GHZ];
|
|
sband->channels = channels;
|
|
/* OFDM & CCK */
|
|
sband->bitrates = rates;
|
|
sband->n_bitrates = RATE_COUNT_LEGACY;
|
|
|
|
if (il->cfg->sku & IL_SKU_N)
|
|
il_init_ht_hw_capab(il, &sband->ht_cap, IEEE80211_BAND_2GHZ);
|
|
|
|
il->ieee_channels = channels;
|
|
il->ieee_rates = rates;
|
|
|
|
for (i = 0; i < il->channel_count; i++) {
|
|
ch = &il->channel_info[i];
|
|
|
|
if (!il_is_channel_valid(ch))
|
|
continue;
|
|
|
|
sband = &il->bands[ch->band];
|
|
|
|
geo_ch = &sband->channels[sband->n_channels++];
|
|
|
|
geo_ch->center_freq =
|
|
ieee80211_channel_to_frequency(ch->channel, ch->band);
|
|
geo_ch->max_power = ch->max_power_avg;
|
|
geo_ch->max_antenna_gain = 0xff;
|
|
geo_ch->hw_value = ch->channel;
|
|
|
|
if (il_is_channel_valid(ch)) {
|
|
if (!(ch->flags & EEPROM_CHANNEL_IBSS))
|
|
geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
|
|
|
|
if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
|
|
geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
|
|
|
|
if (ch->flags & EEPROM_CHANNEL_RADAR)
|
|
geo_ch->flags |= IEEE80211_CHAN_RADAR;
|
|
|
|
geo_ch->flags |= ch->ht40_extension_channel;
|
|
|
|
if (ch->max_power_avg > max_tx_power)
|
|
max_tx_power = ch->max_power_avg;
|
|
} else {
|
|
geo_ch->flags |= IEEE80211_CHAN_DISABLED;
|
|
}
|
|
|
|
D_INFO("Channel %d Freq=%d[%sGHz] %s flag=0x%X\n", ch->channel,
|
|
geo_ch->center_freq,
|
|
il_is_channel_a_band(ch) ? "5.2" : "2.4",
|
|
geo_ch->
|
|
flags & IEEE80211_CHAN_DISABLED ? "restricted" : "valid",
|
|
geo_ch->flags);
|
|
}
|
|
|
|
il->tx_power_device_lmt = max_tx_power;
|
|
il->tx_power_user_lmt = max_tx_power;
|
|
il->tx_power_next = max_tx_power;
|
|
|
|
if (il->bands[IEEE80211_BAND_5GHZ].n_channels == 0 &&
|
|
(il->cfg->sku & IL_SKU_A)) {
|
|
IL_INFO("Incorrectly detected BG card as ABG. "
|
|
"Please send your PCI ID 0x%04X:0x%04X to maintainer.\n",
|
|
il->pci_dev->device, il->pci_dev->subsystem_device);
|
|
il->cfg->sku &= ~IL_SKU_A;
|
|
}
|
|
|
|
IL_INFO("Tunable channels: %d 802.11bg, %d 802.11a channels\n",
|
|
il->bands[IEEE80211_BAND_2GHZ].n_channels,
|
|
il->bands[IEEE80211_BAND_5GHZ].n_channels);
|
|
|
|
set_bit(S_GEO_CONFIGURED, &il->status);
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(il_init_geos);
|
|
|
|
/*
|
|
* il_free_geos - undo allocations in il_init_geos
|
|
*/
|
|
void
|
|
il_free_geos(struct il_priv *il)
|
|
{
|
|
kfree(il->ieee_channels);
|
|
kfree(il->ieee_rates);
|
|
clear_bit(S_GEO_CONFIGURED, &il->status);
|
|
}
|
|
EXPORT_SYMBOL(il_free_geos);
|
|
|
|
static bool
|
|
il_is_channel_extension(struct il_priv *il, enum ieee80211_band band,
|
|
u16 channel, u8 extension_chan_offset)
|
|
{
|
|
const struct il_channel_info *ch_info;
|
|
|
|
ch_info = il_get_channel_info(il, band, channel);
|
|
if (!il_is_channel_valid(ch_info))
|
|
return false;
|
|
|
|
if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_ABOVE)
|
|
return !(ch_info->
|
|
ht40_extension_channel & IEEE80211_CHAN_NO_HT40PLUS);
|
|
else if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_BELOW)
|
|
return !(ch_info->
|
|
ht40_extension_channel & IEEE80211_CHAN_NO_HT40MINUS);
|
|
|
|
return false;
|
|
}
|
|
|
|
bool
|
|
il_is_ht40_tx_allowed(struct il_priv *il, struct ieee80211_sta_ht_cap *ht_cap)
|
|
{
|
|
if (!il->ht.enabled || !il->ht.is_40mhz)
|
|
return false;
|
|
|
|
/*
|
|
* We do not check for IEEE80211_HT_CAP_SUP_WIDTH_20_40
|
|
* the bit will not set if it is pure 40MHz case
|
|
*/
|
|
if (ht_cap && !ht_cap->ht_supported)
|
|
return false;
|
|
|
|
#ifdef CONFIG_IWLEGACY_DEBUGFS
|
|
if (il->disable_ht40)
|
|
return false;
|
|
#endif
|
|
|
|
return il_is_channel_extension(il, il->band,
|
|
le16_to_cpu(il->staging.channel),
|
|
il->ht.extension_chan_offset);
|
|
}
|
|
EXPORT_SYMBOL(il_is_ht40_tx_allowed);
|
|
|
|
static u16
|
|
il_adjust_beacon_interval(u16 beacon_val, u16 max_beacon_val)
|
|
{
|
|
u16 new_val;
|
|
u16 beacon_factor;
|
|
|
|
/*
|
|
* If mac80211 hasn't given us a beacon interval, program
|
|
* the default into the device.
|
|
*/
|
|
if (!beacon_val)
|
|
return DEFAULT_BEACON_INTERVAL;
|
|
|
|
/*
|
|
* If the beacon interval we obtained from the peer
|
|
* is too large, we'll have to wake up more often
|
|
* (and in IBSS case, we'll beacon too much)
|
|
*
|
|
* For example, if max_beacon_val is 4096, and the
|
|
* requested beacon interval is 7000, we'll have to
|
|
* use 3500 to be able to wake up on the beacons.
|
|
*
|
|
* This could badly influence beacon detection stats.
|
|
*/
|
|
|
|
beacon_factor = (beacon_val + max_beacon_val) / max_beacon_val;
|
|
new_val = beacon_val / beacon_factor;
|
|
|
|
if (!new_val)
|
|
new_val = max_beacon_val;
|
|
|
|
return new_val;
|
|
}
|
|
|
|
int
|
|
il_send_rxon_timing(struct il_priv *il)
|
|
{
|
|
u64 tsf;
|
|
s32 interval_tm, rem;
|
|
struct ieee80211_conf *conf = NULL;
|
|
u16 beacon_int;
|
|
struct ieee80211_vif *vif = il->vif;
|
|
|
|
conf = &il->hw->conf;
|
|
|
|
lockdep_assert_held(&il->mutex);
|
|
|
|
memset(&il->timing, 0, sizeof(struct il_rxon_time_cmd));
|
|
|
|
il->timing.timestamp = cpu_to_le64(il->timestamp);
|
|
il->timing.listen_interval = cpu_to_le16(conf->listen_interval);
|
|
|
|
beacon_int = vif ? vif->bss_conf.beacon_int : 0;
|
|
|
|
/*
|
|
* TODO: For IBSS we need to get atim_win from mac80211,
|
|
* for now just always use 0
|
|
*/
|
|
il->timing.atim_win = 0;
|
|
|
|
beacon_int =
|
|
il_adjust_beacon_interval(beacon_int,
|
|
il->hw_params.max_beacon_itrvl *
|
|
TIME_UNIT);
|
|
il->timing.beacon_interval = cpu_to_le16(beacon_int);
|
|
|
|
tsf = il->timestamp; /* tsf is modifed by do_div: copy it */
|
|
interval_tm = beacon_int * TIME_UNIT;
|
|
rem = do_div(tsf, interval_tm);
|
|
il->timing.beacon_init_val = cpu_to_le32(interval_tm - rem);
|
|
|
|
il->timing.dtim_period = vif ? (vif->bss_conf.dtim_period ? : 1) : 1;
|
|
|
|
D_ASSOC("beacon interval %d beacon timer %d beacon tim %d\n",
|
|
le16_to_cpu(il->timing.beacon_interval),
|
|
le32_to_cpu(il->timing.beacon_init_val),
|
|
le16_to_cpu(il->timing.atim_win));
|
|
|
|
return il_send_cmd_pdu(il, C_RXON_TIMING, sizeof(il->timing),
|
|
&il->timing);
|
|
}
|
|
EXPORT_SYMBOL(il_send_rxon_timing);
|
|
|
|
void
|
|
il_set_rxon_hwcrypto(struct il_priv *il, int hw_decrypt)
|
|
{
|
|
struct il_rxon_cmd *rxon = &il->staging;
|
|
|
|
if (hw_decrypt)
|
|
rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
|
|
else
|
|
rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
|
|
|
|
}
|
|
EXPORT_SYMBOL(il_set_rxon_hwcrypto);
|
|
|
|
/* validate RXON structure is valid */
|
|
int
|
|
il_check_rxon_cmd(struct il_priv *il)
|
|
{
|
|
struct il_rxon_cmd *rxon = &il->staging;
|
|
bool error = false;
|
|
|
|
if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
|
|
if (rxon->flags & RXON_FLG_TGJ_NARROW_BAND_MSK) {
|
|
IL_WARN("check 2.4G: wrong narrow\n");
|
|
error = true;
|
|
}
|
|
if (rxon->flags & RXON_FLG_RADAR_DETECT_MSK) {
|
|
IL_WARN("check 2.4G: wrong radar\n");
|
|
error = true;
|
|
}
|
|
} else {
|
|
if (!(rxon->flags & RXON_FLG_SHORT_SLOT_MSK)) {
|
|
IL_WARN("check 5.2G: not short slot!\n");
|
|
error = true;
|
|
}
|
|
if (rxon->flags & RXON_FLG_CCK_MSK) {
|
|
IL_WARN("check 5.2G: CCK!\n");
|
|
error = true;
|
|
}
|
|
}
|
|
if ((rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1) {
|
|
IL_WARN("mac/bssid mcast!\n");
|
|
error = true;
|
|
}
|
|
|
|
/* make sure basic rates 6Mbps and 1Mbps are supported */
|
|
if ((rxon->ofdm_basic_rates & RATE_6M_MASK) == 0 &&
|
|
(rxon->cck_basic_rates & RATE_1M_MASK) == 0) {
|
|
IL_WARN("neither 1 nor 6 are basic\n");
|
|
error = true;
|
|
}
|
|
|
|
if (le16_to_cpu(rxon->assoc_id) > 2007) {
|
|
IL_WARN("aid > 2007\n");
|
|
error = true;
|
|
}
|
|
|
|
if ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK)) ==
|
|
(RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK)) {
|
|
IL_WARN("CCK and short slot\n");
|
|
error = true;
|
|
}
|
|
|
|
if ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK)) ==
|
|
(RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK)) {
|
|
IL_WARN("CCK and auto detect");
|
|
error = true;
|
|
}
|
|
|
|
if ((rxon->
|
|
flags & (RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK)) ==
|
|
RXON_FLG_TGG_PROTECT_MSK) {
|
|
IL_WARN("TGg but no auto-detect\n");
|
|
error = true;
|
|
}
|
|
|
|
if (error)
|
|
IL_WARN("Tuning to channel %d\n", le16_to_cpu(rxon->channel));
|
|
|
|
if (error) {
|
|
IL_ERR("Invalid RXON\n");
|
|
return -EINVAL;
|
|
}
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(il_check_rxon_cmd);
|
|
|
|
/**
|
|
* il_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
|
|
* @il: staging_rxon is compared to active_rxon
|
|
*
|
|
* If the RXON structure is changing enough to require a new tune,
|
|
* or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
|
|
* a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
|
|
*/
|
|
int
|
|
il_full_rxon_required(struct il_priv *il)
|
|
{
|
|
const struct il_rxon_cmd *staging = &il->staging;
|
|
const struct il_rxon_cmd *active = &il->active;
|
|
|
|
#define CHK(cond) \
|
|
if ((cond)) { \
|
|
D_INFO("need full RXON - " #cond "\n"); \
|
|
return 1; \
|
|
}
|
|
|
|
#define CHK_NEQ(c1, c2) \
|
|
if ((c1) != (c2)) { \
|
|
D_INFO("need full RXON - " \
|
|
#c1 " != " #c2 " - %d != %d\n", \
|
|
(c1), (c2)); \
|
|
return 1; \
|
|
}
|
|
|
|
/* These items are only settable from the full RXON command */
|
|
CHK(!il_is_associated(il));
|
|
CHK(!ether_addr_equal(staging->bssid_addr, active->bssid_addr));
|
|
CHK(!ether_addr_equal(staging->node_addr, active->node_addr));
|
|
CHK(!ether_addr_equal(staging->wlap_bssid_addr,
|
|
active->wlap_bssid_addr));
|
|
CHK_NEQ(staging->dev_type, active->dev_type);
|
|
CHK_NEQ(staging->channel, active->channel);
|
|
CHK_NEQ(staging->air_propagation, active->air_propagation);
|
|
CHK_NEQ(staging->ofdm_ht_single_stream_basic_rates,
|
|
active->ofdm_ht_single_stream_basic_rates);
|
|
CHK_NEQ(staging->ofdm_ht_dual_stream_basic_rates,
|
|
active->ofdm_ht_dual_stream_basic_rates);
|
|
CHK_NEQ(staging->assoc_id, active->assoc_id);
|
|
|
|
/* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
|
|
* be updated with the RXON_ASSOC command -- however only some
|
|
* flag transitions are allowed using RXON_ASSOC */
|
|
|
|
/* Check if we are not switching bands */
|
|
CHK_NEQ(staging->flags & RXON_FLG_BAND_24G_MSK,
|
|
active->flags & RXON_FLG_BAND_24G_MSK);
|
|
|
|
/* Check if we are switching association toggle */
|
|
CHK_NEQ(staging->filter_flags & RXON_FILTER_ASSOC_MSK,
|
|
active->filter_flags & RXON_FILTER_ASSOC_MSK);
|
|
|
|
#undef CHK
|
|
#undef CHK_NEQ
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(il_full_rxon_required);
|
|
|
|
u8
|
|
il_get_lowest_plcp(struct il_priv *il)
|
|
{
|
|
/*
|
|
* Assign the lowest rate -- should really get this from
|
|
* the beacon skb from mac80211.
|
|
*/
|
|
if (il->staging.flags & RXON_FLG_BAND_24G_MSK)
|
|
return RATE_1M_PLCP;
|
|
else
|
|
return RATE_6M_PLCP;
|
|
}
|
|
EXPORT_SYMBOL(il_get_lowest_plcp);
|
|
|
|
static void
|
|
_il_set_rxon_ht(struct il_priv *il, struct il_ht_config *ht_conf)
|
|
{
|
|
struct il_rxon_cmd *rxon = &il->staging;
|
|
|
|
if (!il->ht.enabled) {
|
|
rxon->flags &=
|
|
~(RXON_FLG_CHANNEL_MODE_MSK |
|
|
RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK | RXON_FLG_HT40_PROT_MSK
|
|
| RXON_FLG_HT_PROT_MSK);
|
|
return;
|
|
}
|
|
|
|
rxon->flags |=
|
|
cpu_to_le32(il->ht.protection << RXON_FLG_HT_OPERATING_MODE_POS);
|
|
|
|
/* Set up channel bandwidth:
|
|
* 20 MHz only, 20/40 mixed or pure 40 if ht40 ok */
|
|
/* clear the HT channel mode before set the mode */
|
|
rxon->flags &=
|
|
~(RXON_FLG_CHANNEL_MODE_MSK | RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
|
|
if (il_is_ht40_tx_allowed(il, NULL)) {
|
|
/* pure ht40 */
|
|
if (il->ht.protection == IEEE80211_HT_OP_MODE_PROTECTION_20MHZ) {
|
|
rxon->flags |= RXON_FLG_CHANNEL_MODE_PURE_40;
|
|
/* Note: control channel is opposite of extension channel */
|
|
switch (il->ht.extension_chan_offset) {
|
|
case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
|
|
rxon->flags &=
|
|
~RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
|
|
break;
|
|
case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
|
|
rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
|
|
break;
|
|
}
|
|
} else {
|
|
/* Note: control channel is opposite of extension channel */
|
|
switch (il->ht.extension_chan_offset) {
|
|
case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
|
|
rxon->flags &=
|
|
~(RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
|
|
rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED;
|
|
break;
|
|
case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
|
|
rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
|
|
rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED;
|
|
break;
|
|
case IEEE80211_HT_PARAM_CHA_SEC_NONE:
|
|
default:
|
|
/* channel location only valid if in Mixed mode */
|
|
IL_ERR("invalid extension channel offset\n");
|
|
break;
|
|
}
|
|
}
|
|
} else {
|
|
rxon->flags |= RXON_FLG_CHANNEL_MODE_LEGACY;
|
|
}
|
|
|
|
if (il->ops->set_rxon_chain)
|
|
il->ops->set_rxon_chain(il);
|
|
|
|
D_ASSOC("rxon flags 0x%X operation mode :0x%X "
|
|
"extension channel offset 0x%x\n", le32_to_cpu(rxon->flags),
|
|
il->ht.protection, il->ht.extension_chan_offset);
|
|
}
|
|
|
|
void
|
|
il_set_rxon_ht(struct il_priv *il, struct il_ht_config *ht_conf)
|
|
{
|
|
_il_set_rxon_ht(il, ht_conf);
|
|
}
|
|
EXPORT_SYMBOL(il_set_rxon_ht);
|
|
|
|
/* Return valid, unused, channel for a passive scan to reset the RF */
|
|
u8
|
|
il_get_single_channel_number(struct il_priv *il, enum ieee80211_band band)
|
|
{
|
|
const struct il_channel_info *ch_info;
|
|
int i;
|
|
u8 channel = 0;
|
|
u8 min, max;
|
|
|
|
if (band == IEEE80211_BAND_5GHZ) {
|
|
min = 14;
|
|
max = il->channel_count;
|
|
} else {
|
|
min = 0;
|
|
max = 14;
|
|
}
|
|
|
|
for (i = min; i < max; i++) {
|
|
channel = il->channel_info[i].channel;
|
|
if (channel == le16_to_cpu(il->staging.channel))
|
|
continue;
|
|
|
|
ch_info = il_get_channel_info(il, band, channel);
|
|
if (il_is_channel_valid(ch_info))
|
|
break;
|
|
}
|
|
|
|
return channel;
|
|
}
|
|
EXPORT_SYMBOL(il_get_single_channel_number);
|
|
|
|
/**
|
|
* il_set_rxon_channel - Set the band and channel values in staging RXON
|
|
* @ch: requested channel as a pointer to struct ieee80211_channel
|
|
|
|
* NOTE: Does not commit to the hardware; it sets appropriate bit fields
|
|
* in the staging RXON flag structure based on the ch->band
|
|
*/
|
|
int
|
|
il_set_rxon_channel(struct il_priv *il, struct ieee80211_channel *ch)
|
|
{
|
|
enum ieee80211_band band = ch->band;
|
|
u16 channel = ch->hw_value;
|
|
|
|
if (le16_to_cpu(il->staging.channel) == channel && il->band == band)
|
|
return 0;
|
|
|
|
il->staging.channel = cpu_to_le16(channel);
|
|
if (band == IEEE80211_BAND_5GHZ)
|
|
il->staging.flags &= ~RXON_FLG_BAND_24G_MSK;
|
|
else
|
|
il->staging.flags |= RXON_FLG_BAND_24G_MSK;
|
|
|
|
il->band = band;
|
|
|
|
D_INFO("Staging channel set to %d [%d]\n", channel, band);
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(il_set_rxon_channel);
|
|
|
|
void
|
|
il_set_flags_for_band(struct il_priv *il, enum ieee80211_band band,
|
|
struct ieee80211_vif *vif)
|
|
{
|
|
if (band == IEEE80211_BAND_5GHZ) {
|
|
il->staging.flags &=
|
|
~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK |
|
|
RXON_FLG_CCK_MSK);
|
|
il->staging.flags |= RXON_FLG_SHORT_SLOT_MSK;
|
|
} else {
|
|
/* Copied from il_post_associate() */
|
|
if (vif && vif->bss_conf.use_short_slot)
|
|
il->staging.flags |= RXON_FLG_SHORT_SLOT_MSK;
|
|
else
|
|
il->staging.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
|
|
|
|
il->staging.flags |= RXON_FLG_BAND_24G_MSK;
|
|
il->staging.flags |= RXON_FLG_AUTO_DETECT_MSK;
|
|
il->staging.flags &= ~RXON_FLG_CCK_MSK;
|
|
}
|
|
}
|
|
EXPORT_SYMBOL(il_set_flags_for_band);
|
|
|
|
/*
|
|
* initialize rxon structure with default values from eeprom
|
|
*/
|
|
void
|
|
il_connection_init_rx_config(struct il_priv *il)
|
|
{
|
|
const struct il_channel_info *ch_info;
|
|
|
|
memset(&il->staging, 0, sizeof(il->staging));
|
|
|
|
switch (il->iw_mode) {
|
|
case NL80211_IFTYPE_UNSPECIFIED:
|
|
il->staging.dev_type = RXON_DEV_TYPE_ESS;
|
|
break;
|
|
case NL80211_IFTYPE_STATION:
|
|
il->staging.dev_type = RXON_DEV_TYPE_ESS;
|
|
il->staging.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
|
|
break;
|
|
case NL80211_IFTYPE_ADHOC:
|
|
il->staging.dev_type = RXON_DEV_TYPE_IBSS;
|
|
il->staging.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
|
|
il->staging.filter_flags =
|
|
RXON_FILTER_BCON_AWARE_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
|
|
break;
|
|
default:
|
|
IL_ERR("Unsupported interface type %d\n", il->vif->type);
|
|
return;
|
|
}
|
|
|
|
#if 0
|
|
/* TODO: Figure out when short_preamble would be set and cache from
|
|
* that */
|
|
if (!hw_to_local(il->hw)->short_preamble)
|
|
il->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
|
|
else
|
|
il->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
|
|
#endif
|
|
|
|
ch_info =
|
|
il_get_channel_info(il, il->band, le16_to_cpu(il->active.channel));
|
|
|
|
if (!ch_info)
|
|
ch_info = &il->channel_info[0];
|
|
|
|
il->staging.channel = cpu_to_le16(ch_info->channel);
|
|
il->band = ch_info->band;
|
|
|
|
il_set_flags_for_band(il, il->band, il->vif);
|
|
|
|
il->staging.ofdm_basic_rates =
|
|
(IL_OFDM_RATES_MASK >> IL_FIRST_OFDM_RATE) & 0xFF;
|
|
il->staging.cck_basic_rates =
|
|
(IL_CCK_RATES_MASK >> IL_FIRST_CCK_RATE) & 0xF;
|
|
|
|
/* clear both MIX and PURE40 mode flag */
|
|
il->staging.flags &=
|
|
~(RXON_FLG_CHANNEL_MODE_MIXED | RXON_FLG_CHANNEL_MODE_PURE_40);
|
|
if (il->vif)
|
|
memcpy(il->staging.node_addr, il->vif->addr, ETH_ALEN);
|
|
|
|
il->staging.ofdm_ht_single_stream_basic_rates = 0xff;
|
|
il->staging.ofdm_ht_dual_stream_basic_rates = 0xff;
|
|
}
|
|
EXPORT_SYMBOL(il_connection_init_rx_config);
|
|
|
|
void
|
|
il_set_rate(struct il_priv *il)
|
|
{
|
|
const struct ieee80211_supported_band *hw = NULL;
|
|
struct ieee80211_rate *rate;
|
|
int i;
|
|
|
|
hw = il_get_hw_mode(il, il->band);
|
|
if (!hw) {
|
|
IL_ERR("Failed to set rate: unable to get hw mode\n");
|
|
return;
|
|
}
|
|
|
|
il->active_rate = 0;
|
|
|
|
for (i = 0; i < hw->n_bitrates; i++) {
|
|
rate = &(hw->bitrates[i]);
|
|
if (rate->hw_value < RATE_COUNT_LEGACY)
|
|
il->active_rate |= (1 << rate->hw_value);
|
|
}
|
|
|
|
D_RATE("Set active_rate = %0x\n", il->active_rate);
|
|
|
|
il->staging.cck_basic_rates =
|
|
(IL_CCK_BASIC_RATES_MASK >> IL_FIRST_CCK_RATE) & 0xF;
|
|
|
|
il->staging.ofdm_basic_rates =
|
|
(IL_OFDM_BASIC_RATES_MASK >> IL_FIRST_OFDM_RATE) & 0xFF;
|
|
}
|
|
EXPORT_SYMBOL(il_set_rate);
|
|
|
|
void
|
|
il_chswitch_done(struct il_priv *il, bool is_success)
|
|
{
|
|
if (test_bit(S_EXIT_PENDING, &il->status))
|
|
return;
|
|
|
|
if (test_and_clear_bit(S_CHANNEL_SWITCH_PENDING, &il->status))
|
|
ieee80211_chswitch_done(il->vif, is_success);
|
|
}
|
|
EXPORT_SYMBOL(il_chswitch_done);
|
|
|
|
void
|
|
il_hdl_csa(struct il_priv *il, struct il_rx_buf *rxb)
|
|
{
|
|
struct il_rx_pkt *pkt = rxb_addr(rxb);
|
|
struct il_csa_notification *csa = &(pkt->u.csa_notif);
|
|
struct il_rxon_cmd *rxon = (void *)&il->active;
|
|
|
|
if (!test_bit(S_CHANNEL_SWITCH_PENDING, &il->status))
|
|
return;
|
|
|
|
if (!le32_to_cpu(csa->status) && csa->channel == il->switch_channel) {
|
|
rxon->channel = csa->channel;
|
|
il->staging.channel = csa->channel;
|
|
D_11H("CSA notif: channel %d\n", le16_to_cpu(csa->channel));
|
|
il_chswitch_done(il, true);
|
|
} else {
|
|
IL_ERR("CSA notif (fail) : channel %d\n",
|
|
le16_to_cpu(csa->channel));
|
|
il_chswitch_done(il, false);
|
|
}
|
|
}
|
|
EXPORT_SYMBOL(il_hdl_csa);
|
|
|
|
#ifdef CONFIG_IWLEGACY_DEBUG
|
|
void
|
|
il_print_rx_config_cmd(struct il_priv *il)
|
|
{
|
|
struct il_rxon_cmd *rxon = &il->staging;
|
|
|
|
D_RADIO("RX CONFIG:\n");
|
|
il_print_hex_dump(il, IL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
|
|
D_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
|
|
D_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
|
|
D_RADIO("u32 filter_flags: 0x%08x\n", le32_to_cpu(rxon->filter_flags));
|
|
D_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
|
|
D_RADIO("u8 ofdm_basic_rates: 0x%02x\n", rxon->ofdm_basic_rates);
|
|
D_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
|
|
D_RADIO("u8[6] node_addr: %pM\n", rxon->node_addr);
|
|
D_RADIO("u8[6] bssid_addr: %pM\n", rxon->bssid_addr);
|
|
D_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
|
|
}
|
|
EXPORT_SYMBOL(il_print_rx_config_cmd);
|
|
#endif
|
|
/**
|
|
* il_irq_handle_error - called for HW or SW error interrupt from card
|
|
*/
|
|
void
|
|
il_irq_handle_error(struct il_priv *il)
|
|
{
|
|
/* Set the FW error flag -- cleared on il_down */
|
|
set_bit(S_FW_ERROR, &il->status);
|
|
|
|
/* Cancel currently queued command. */
|
|
clear_bit(S_HCMD_ACTIVE, &il->status);
|
|
|
|
IL_ERR("Loaded firmware version: %s\n", il->hw->wiphy->fw_version);
|
|
|
|
il->ops->dump_nic_error_log(il);
|
|
if (il->ops->dump_fh)
|
|
il->ops->dump_fh(il, NULL, false);
|
|
#ifdef CONFIG_IWLEGACY_DEBUG
|
|
if (il_get_debug_level(il) & IL_DL_FW_ERRORS)
|
|
il_print_rx_config_cmd(il);
|
|
#endif
|
|
|
|
wake_up(&il->wait_command_queue);
|
|
|
|
/* Keep the restart process from trying to send host
|
|
* commands by clearing the INIT status bit */
|
|
clear_bit(S_READY, &il->status);
|
|
|
|
if (!test_bit(S_EXIT_PENDING, &il->status)) {
|
|
IL_DBG(IL_DL_FW_ERRORS,
|
|
"Restarting adapter due to uCode error.\n");
|
|
|
|
if (il->cfg->mod_params->restart_fw)
|
|
queue_work(il->workqueue, &il->restart);
|
|
}
|
|
}
|
|
EXPORT_SYMBOL(il_irq_handle_error);
|
|
|
|
static int
|
|
_il_apm_stop_master(struct il_priv *il)
|
|
{
|
|
int ret = 0;
|
|
|
|
/* stop device's busmaster DMA activity */
|
|
_il_set_bit(il, CSR_RESET, CSR_RESET_REG_FLAG_STOP_MASTER);
|
|
|
|
ret =
|
|
_il_poll_bit(il, CSR_RESET, CSR_RESET_REG_FLAG_MASTER_DISABLED,
|
|
CSR_RESET_REG_FLAG_MASTER_DISABLED, 100);
|
|
if (ret < 0)
|
|
IL_WARN("Master Disable Timed Out, 100 usec\n");
|
|
|
|
D_INFO("stop master\n");
|
|
|
|
return ret;
|
|
}
|
|
|
|
void
|
|
_il_apm_stop(struct il_priv *il)
|
|
{
|
|
lockdep_assert_held(&il->reg_lock);
|
|
|
|
D_INFO("Stop card, put in low power state\n");
|
|
|
|
/* Stop device's DMA activity */
|
|
_il_apm_stop_master(il);
|
|
|
|
/* Reset the entire device */
|
|
_il_set_bit(il, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
|
|
|
|
udelay(10);
|
|
|
|
/*
|
|
* Clear "initialization complete" bit to move adapter from
|
|
* D0A* (powered-up Active) --> D0U* (Uninitialized) state.
|
|
*/
|
|
_il_clear_bit(il, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
|
|
}
|
|
EXPORT_SYMBOL(_il_apm_stop);
|
|
|
|
void
|
|
il_apm_stop(struct il_priv *il)
|
|
{
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&il->reg_lock, flags);
|
|
_il_apm_stop(il);
|
|
spin_unlock_irqrestore(&il->reg_lock, flags);
|
|
}
|
|
EXPORT_SYMBOL(il_apm_stop);
|
|
|
|
/*
|
|
* Start up NIC's basic functionality after it has been reset
|
|
* (e.g. after platform boot, or shutdown via il_apm_stop())
|
|
* NOTE: This does not load uCode nor start the embedded processor
|
|
*/
|
|
int
|
|
il_apm_init(struct il_priv *il)
|
|
{
|
|
int ret = 0;
|
|
u16 lctl;
|
|
|
|
D_INFO("Init card's basic functions\n");
|
|
|
|
/*
|
|
* Use "set_bit" below rather than "write", to preserve any hardware
|
|
* bits already set by default after reset.
|
|
*/
|
|
|
|
/* Disable L0S exit timer (platform NMI Work/Around) */
|
|
il_set_bit(il, 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)
|
|
*/
|
|
il_set_bit(il, 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) */
|
|
il_set_bit(il, 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
|
|
* NOTE: This is no-op for 3945 (non-existent bit)
|
|
*/
|
|
il_set_bit(il, CSR_HW_IF_CONFIG_REG,
|
|
CSR_HW_IF_CONFIG_REG_BIT_HAP_WAKE_L1A);
|
|
|
|
/*
|
|
* HW bug W/A for instability in PCIe bus L0->L0S->L1 transition.
|
|
* Check if BIOS (or OS) enabled L1-ASPM on this device.
|
|
* If so (likely), disable L0S, so device moves directly L0->L1;
|
|
* costs negligible amount of power savings.
|
|
* If not (unlikely), enable L0S, so there is at least some
|
|
* power savings, even without L1.
|
|
*/
|
|
if (il->cfg->set_l0s) {
|
|
pcie_capability_read_word(il->pci_dev, PCI_EXP_LNKCTL, &lctl);
|
|
if (lctl & PCI_EXP_LNKCTL_ASPM_L1) {
|
|
/* L1-ASPM enabled; disable(!) L0S */
|
|
il_set_bit(il, CSR_GIO_REG,
|
|
CSR_GIO_REG_VAL_L0S_ENABLED);
|
|
D_POWER("L1 Enabled; Disabling L0S\n");
|
|
} else {
|
|
/* L1-ASPM disabled; enable(!) L0S */
|
|
il_clear_bit(il, CSR_GIO_REG,
|
|
CSR_GIO_REG_VAL_L0S_ENABLED);
|
|
D_POWER("L1 Disabled; Enabling L0S\n");
|
|
}
|
|
}
|
|
|
|
/* Configure analog phase-lock-loop before activating to D0A */
|
|
if (il->cfg->pll_cfg_val)
|
|
il_set_bit(il, CSR_ANA_PLL_CFG,
|
|
il->cfg->pll_cfg_val);
|
|
|
|
/*
|
|
* Set "initialization complete" bit to move adapter from
|
|
* D0U* --> D0A* (powered-up active) state.
|
|
*/
|
|
il_set_bit(il, 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. il_wr_prph()
|
|
* and accesses to uCode SRAM.
|
|
*/
|
|
ret =
|
|
_il_poll_bit(il, CSR_GP_CNTRL,
|
|
CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
|
|
CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
|
|
if (ret < 0) {
|
|
D_INFO("Failed to init the card\n");
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* Enable DMA and BSM (if used) clocks, wait for them to stabilize.
|
|
* BSM (Boostrap State Machine) is only in 3945 and 4965.
|
|
*
|
|
* Write to "CLK_EN_REG"; "1" bits enable clocks, while "0" bits
|
|
* do not disable clocks. This preserves any hardware bits already
|
|
* set by default in "CLK_CTRL_REG" after reset.
|
|
*/
|
|
if (il->cfg->use_bsm)
|
|
il_wr_prph(il, APMG_CLK_EN_REG,
|
|
APMG_CLK_VAL_DMA_CLK_RQT | APMG_CLK_VAL_BSM_CLK_RQT);
|
|
else
|
|
il_wr_prph(il, APMG_CLK_EN_REG, APMG_CLK_VAL_DMA_CLK_RQT);
|
|
udelay(20);
|
|
|
|
/* Disable L1-Active */
|
|
il_set_bits_prph(il, APMG_PCIDEV_STT_REG,
|
|
APMG_PCIDEV_STT_VAL_L1_ACT_DIS);
|
|
|
|
out:
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(il_apm_init);
|
|
|
|
int
|
|
il_set_tx_power(struct il_priv *il, s8 tx_power, bool force)
|
|
{
|
|
int ret;
|
|
s8 prev_tx_power;
|
|
bool defer;
|
|
|
|
lockdep_assert_held(&il->mutex);
|
|
|
|
if (il->tx_power_user_lmt == tx_power && !force)
|
|
return 0;
|
|
|
|
if (!il->ops->send_tx_power)
|
|
return -EOPNOTSUPP;
|
|
|
|
/* 0 dBm mean 1 milliwatt */
|
|
if (tx_power < 0) {
|
|
IL_WARN("Requested user TXPOWER %d below 1 mW.\n", tx_power);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (tx_power > il->tx_power_device_lmt) {
|
|
IL_WARN("Requested user TXPOWER %d above upper limit %d.\n",
|
|
tx_power, il->tx_power_device_lmt);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (!il_is_ready_rf(il))
|
|
return -EIO;
|
|
|
|
/* scan complete and commit_rxon use tx_power_next value,
|
|
* it always need to be updated for newest request */
|
|
il->tx_power_next = tx_power;
|
|
|
|
/* do not set tx power when scanning or channel changing */
|
|
defer = test_bit(S_SCANNING, &il->status) ||
|
|
memcmp(&il->active, &il->staging, sizeof(il->staging));
|
|
if (defer && !force) {
|
|
D_INFO("Deferring tx power set\n");
|
|
return 0;
|
|
}
|
|
|
|
prev_tx_power = il->tx_power_user_lmt;
|
|
il->tx_power_user_lmt = tx_power;
|
|
|
|
ret = il->ops->send_tx_power(il);
|
|
|
|
/* if fail to set tx_power, restore the orig. tx power */
|
|
if (ret) {
|
|
il->tx_power_user_lmt = prev_tx_power;
|
|
il->tx_power_next = prev_tx_power;
|
|
}
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(il_set_tx_power);
|
|
|
|
void
|
|
il_send_bt_config(struct il_priv *il)
|
|
{
|
|
struct il_bt_cmd bt_cmd = {
|
|
.lead_time = BT_LEAD_TIME_DEF,
|
|
.max_kill = BT_MAX_KILL_DEF,
|
|
.kill_ack_mask = 0,
|
|
.kill_cts_mask = 0,
|
|
};
|
|
|
|
if (!bt_coex_active)
|
|
bt_cmd.flags = BT_COEX_DISABLE;
|
|
else
|
|
bt_cmd.flags = BT_COEX_ENABLE;
|
|
|
|
D_INFO("BT coex %s\n",
|
|
(bt_cmd.flags == BT_COEX_DISABLE) ? "disable" : "active");
|
|
|
|
if (il_send_cmd_pdu(il, C_BT_CONFIG, sizeof(struct il_bt_cmd), &bt_cmd))
|
|
IL_ERR("failed to send BT Coex Config\n");
|
|
}
|
|
EXPORT_SYMBOL(il_send_bt_config);
|
|
|
|
int
|
|
il_send_stats_request(struct il_priv *il, u8 flags, bool clear)
|
|
{
|
|
struct il_stats_cmd stats_cmd = {
|
|
.configuration_flags = clear ? IL_STATS_CONF_CLEAR_STATS : 0,
|
|
};
|
|
|
|
if (flags & CMD_ASYNC)
|
|
return il_send_cmd_pdu_async(il, C_STATS, sizeof(struct il_stats_cmd),
|
|
&stats_cmd, NULL);
|
|
else
|
|
return il_send_cmd_pdu(il, C_STATS, sizeof(struct il_stats_cmd),
|
|
&stats_cmd);
|
|
}
|
|
EXPORT_SYMBOL(il_send_stats_request);
|
|
|
|
void
|
|
il_hdl_pm_sleep(struct il_priv *il, struct il_rx_buf *rxb)
|
|
{
|
|
#ifdef CONFIG_IWLEGACY_DEBUG
|
|
struct il_rx_pkt *pkt = rxb_addr(rxb);
|
|
struct il_sleep_notification *sleep = &(pkt->u.sleep_notif);
|
|
D_RX("sleep mode: %d, src: %d\n",
|
|
sleep->pm_sleep_mode, sleep->pm_wakeup_src);
|
|
#endif
|
|
}
|
|
EXPORT_SYMBOL(il_hdl_pm_sleep);
|
|
|
|
void
|
|
il_hdl_pm_debug_stats(struct il_priv *il, struct il_rx_buf *rxb)
|
|
{
|
|
struct il_rx_pkt *pkt = rxb_addr(rxb);
|
|
u32 len = le32_to_cpu(pkt->len_n_flags) & IL_RX_FRAME_SIZE_MSK;
|
|
D_RADIO("Dumping %d bytes of unhandled notification for %s:\n", len,
|
|
il_get_cmd_string(pkt->hdr.cmd));
|
|
il_print_hex_dump(il, IL_DL_RADIO, pkt->u.raw, len);
|
|
}
|
|
EXPORT_SYMBOL(il_hdl_pm_debug_stats);
|
|
|
|
void
|
|
il_hdl_error(struct il_priv *il, struct il_rx_buf *rxb)
|
|
{
|
|
struct il_rx_pkt *pkt = rxb_addr(rxb);
|
|
|
|
IL_ERR("Error Reply type 0x%08X cmd %s (0x%02X) "
|
|
"seq 0x%04X ser 0x%08X\n",
|
|
le32_to_cpu(pkt->u.err_resp.error_type),
|
|
il_get_cmd_string(pkt->u.err_resp.cmd_id),
|
|
pkt->u.err_resp.cmd_id,
|
|
le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
|
|
le32_to_cpu(pkt->u.err_resp.error_info));
|
|
}
|
|
EXPORT_SYMBOL(il_hdl_error);
|
|
|
|
void
|
|
il_clear_isr_stats(struct il_priv *il)
|
|
{
|
|
memset(&il->isr_stats, 0, sizeof(il->isr_stats));
|
|
}
|
|
|
|
int
|
|
il_mac_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u16 queue,
|
|
const struct ieee80211_tx_queue_params *params)
|
|
{
|
|
struct il_priv *il = hw->priv;
|
|
unsigned long flags;
|
|
int q;
|
|
|
|
D_MAC80211("enter\n");
|
|
|
|
if (!il_is_ready_rf(il)) {
|
|
D_MAC80211("leave - RF not ready\n");
|
|
return -EIO;
|
|
}
|
|
|
|
if (queue >= AC_NUM) {
|
|
D_MAC80211("leave - queue >= AC_NUM %d\n", queue);
|
|
return 0;
|
|
}
|
|
|
|
q = AC_NUM - 1 - queue;
|
|
|
|
spin_lock_irqsave(&il->lock, flags);
|
|
|
|
il->qos_data.def_qos_parm.ac[q].cw_min =
|
|
cpu_to_le16(params->cw_min);
|
|
il->qos_data.def_qos_parm.ac[q].cw_max =
|
|
cpu_to_le16(params->cw_max);
|
|
il->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
|
|
il->qos_data.def_qos_parm.ac[q].edca_txop =
|
|
cpu_to_le16((params->txop * 32));
|
|
|
|
il->qos_data.def_qos_parm.ac[q].reserved1 = 0;
|
|
|
|
spin_unlock_irqrestore(&il->lock, flags);
|
|
|
|
D_MAC80211("leave\n");
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(il_mac_conf_tx);
|
|
|
|
int
|
|
il_mac_tx_last_beacon(struct ieee80211_hw *hw)
|
|
{
|
|
struct il_priv *il = hw->priv;
|
|
int ret;
|
|
|
|
D_MAC80211("enter\n");
|
|
|
|
ret = (il->ibss_manager == IL_IBSS_MANAGER);
|
|
|
|
D_MAC80211("leave ret %d\n", ret);
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL_GPL(il_mac_tx_last_beacon);
|
|
|
|
static int
|
|
il_set_mode(struct il_priv *il)
|
|
{
|
|
il_connection_init_rx_config(il);
|
|
|
|
if (il->ops->set_rxon_chain)
|
|
il->ops->set_rxon_chain(il);
|
|
|
|
return il_commit_rxon(il);
|
|
}
|
|
|
|
int
|
|
il_mac_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
|
|
{
|
|
struct il_priv *il = hw->priv;
|
|
int err;
|
|
bool reset;
|
|
|
|
mutex_lock(&il->mutex);
|
|
D_MAC80211("enter: type %d, addr %pM\n", vif->type, vif->addr);
|
|
|
|
if (!il_is_ready_rf(il)) {
|
|
IL_WARN("Try to add interface when device not ready\n");
|
|
err = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* We do not support multiple virtual interfaces, but on hardware reset
|
|
* we have to add the same interface again.
|
|
*/
|
|
reset = (il->vif == vif);
|
|
if (il->vif && !reset) {
|
|
err = -EOPNOTSUPP;
|
|
goto out;
|
|
}
|
|
|
|
il->vif = vif;
|
|
il->iw_mode = vif->type;
|
|
|
|
err = il_set_mode(il);
|
|
if (err) {
|
|
IL_WARN("Fail to set mode %d\n", vif->type);
|
|
if (!reset) {
|
|
il->vif = NULL;
|
|
il->iw_mode = NL80211_IFTYPE_STATION;
|
|
}
|
|
}
|
|
|
|
out:
|
|
D_MAC80211("leave err %d\n", err);
|
|
mutex_unlock(&il->mutex);
|
|
|
|
return err;
|
|
}
|
|
EXPORT_SYMBOL(il_mac_add_interface);
|
|
|
|
static void
|
|
il_teardown_interface(struct il_priv *il, struct ieee80211_vif *vif)
|
|
{
|
|
lockdep_assert_held(&il->mutex);
|
|
|
|
if (il->scan_vif == vif) {
|
|
il_scan_cancel_timeout(il, 200);
|
|
il_force_scan_end(il);
|
|
}
|
|
|
|
il_set_mode(il);
|
|
}
|
|
|
|
void
|
|
il_mac_remove_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
|
|
{
|
|
struct il_priv *il = hw->priv;
|
|
|
|
mutex_lock(&il->mutex);
|
|
D_MAC80211("enter: type %d, addr %pM\n", vif->type, vif->addr);
|
|
|
|
WARN_ON(il->vif != vif);
|
|
il->vif = NULL;
|
|
il->iw_mode = NL80211_IFTYPE_UNSPECIFIED;
|
|
il_teardown_interface(il, vif);
|
|
memset(il->bssid, 0, ETH_ALEN);
|
|
|
|
D_MAC80211("leave\n");
|
|
mutex_unlock(&il->mutex);
|
|
}
|
|
EXPORT_SYMBOL(il_mac_remove_interface);
|
|
|
|
int
|
|
il_alloc_txq_mem(struct il_priv *il)
|
|
{
|
|
if (!il->txq)
|
|
il->txq =
|
|
kzalloc(sizeof(struct il_tx_queue) *
|
|
il->cfg->num_of_queues, GFP_KERNEL);
|
|
if (!il->txq) {
|
|
IL_ERR("Not enough memory for txq\n");
|
|
return -ENOMEM;
|
|
}
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(il_alloc_txq_mem);
|
|
|
|
void
|
|
il_free_txq_mem(struct il_priv *il)
|
|
{
|
|
kfree(il->txq);
|
|
il->txq = NULL;
|
|
}
|
|
EXPORT_SYMBOL(il_free_txq_mem);
|
|
|
|
int
|
|
il_force_reset(struct il_priv *il, bool external)
|
|
{
|
|
struct il_force_reset *force_reset;
|
|
|
|
if (test_bit(S_EXIT_PENDING, &il->status))
|
|
return -EINVAL;
|
|
|
|
force_reset = &il->force_reset;
|
|
force_reset->reset_request_count++;
|
|
if (!external) {
|
|
if (force_reset->last_force_reset_jiffies &&
|
|
time_after(force_reset->last_force_reset_jiffies +
|
|
force_reset->reset_duration, jiffies)) {
|
|
D_INFO("force reset rejected\n");
|
|
force_reset->reset_reject_count++;
|
|
return -EAGAIN;
|
|
}
|
|
}
|
|
force_reset->reset_success_count++;
|
|
force_reset->last_force_reset_jiffies = jiffies;
|
|
|
|
/*
|
|
* if the request is from external(ex: debugfs),
|
|
* then always perform the request in regardless the module
|
|
* parameter setting
|
|
* if the request is from internal (uCode error or driver
|
|
* detect failure), then fw_restart module parameter
|
|
* need to be check before performing firmware reload
|
|
*/
|
|
|
|
if (!external && !il->cfg->mod_params->restart_fw) {
|
|
D_INFO("Cancel firmware reload based on "
|
|
"module parameter setting\n");
|
|
return 0;
|
|
}
|
|
|
|
IL_ERR("On demand firmware reload\n");
|
|
|
|
/* Set the FW error flag -- cleared on il_down */
|
|
set_bit(S_FW_ERROR, &il->status);
|
|
wake_up(&il->wait_command_queue);
|
|
/*
|
|
* Keep the restart process from trying to send host
|
|
* commands by clearing the INIT status bit
|
|
*/
|
|
clear_bit(S_READY, &il->status);
|
|
queue_work(il->workqueue, &il->restart);
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(il_force_reset);
|
|
|
|
int
|
|
il_mac_change_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
|
|
enum nl80211_iftype newtype, bool newp2p)
|
|
{
|
|
struct il_priv *il = hw->priv;
|
|
int err;
|
|
|
|
mutex_lock(&il->mutex);
|
|
D_MAC80211("enter: type %d, addr %pM newtype %d newp2p %d\n",
|
|
vif->type, vif->addr, newtype, newp2p);
|
|
|
|
if (newp2p) {
|
|
err = -EOPNOTSUPP;
|
|
goto out;
|
|
}
|
|
|
|
if (!il->vif || !il_is_ready_rf(il)) {
|
|
/*
|
|
* Huh? But wait ... this can maybe happen when
|
|
* we're in the middle of a firmware restart!
|
|
*/
|
|
err = -EBUSY;
|
|
goto out;
|
|
}
|
|
|
|
/* success */
|
|
vif->type = newtype;
|
|
vif->p2p = false;
|
|
il->iw_mode = newtype;
|
|
il_teardown_interface(il, vif);
|
|
err = 0;
|
|
|
|
out:
|
|
D_MAC80211("leave err %d\n", err);
|
|
mutex_unlock(&il->mutex);
|
|
|
|
return err;
|
|
}
|
|
EXPORT_SYMBOL(il_mac_change_interface);
|
|
|
|
void il_mac_flush(struct ieee80211_hw *hw, u32 queues, bool drop)
|
|
{
|
|
struct il_priv *il = hw->priv;
|
|
unsigned long timeout = jiffies + msecs_to_jiffies(500);
|
|
int i;
|
|
|
|
mutex_lock(&il->mutex);
|
|
D_MAC80211("enter\n");
|
|
|
|
if (il->txq == NULL)
|
|
goto out;
|
|
|
|
for (i = 0; i < il->hw_params.max_txq_num; i++) {
|
|
struct il_queue *q;
|
|
|
|
if (i == il->cmd_queue)
|
|
continue;
|
|
|
|
q = &il->txq[i].q;
|
|
if (q->read_ptr == q->write_ptr)
|
|
continue;
|
|
|
|
if (time_after(jiffies, timeout)) {
|
|
IL_ERR("Failed to flush queue %d\n", q->id);
|
|
break;
|
|
}
|
|
|
|
msleep(20);
|
|
}
|
|
out:
|
|
D_MAC80211("leave\n");
|
|
mutex_unlock(&il->mutex);
|
|
}
|
|
EXPORT_SYMBOL(il_mac_flush);
|
|
|
|
/*
|
|
* On every watchdog tick we check (latest) time stamp. If it does not
|
|
* change during timeout period and queue is not empty we reset firmware.
|
|
*/
|
|
static int
|
|
il_check_stuck_queue(struct il_priv *il, int cnt)
|
|
{
|
|
struct il_tx_queue *txq = &il->txq[cnt];
|
|
struct il_queue *q = &txq->q;
|
|
unsigned long timeout;
|
|
unsigned long now = jiffies;
|
|
int ret;
|
|
|
|
if (q->read_ptr == q->write_ptr) {
|
|
txq->time_stamp = now;
|
|
return 0;
|
|
}
|
|
|
|
timeout =
|
|
txq->time_stamp +
|
|
msecs_to_jiffies(il->cfg->wd_timeout);
|
|
|
|
if (time_after(now, timeout)) {
|
|
IL_ERR("Queue %d stuck for %u ms.\n", q->id,
|
|
jiffies_to_msecs(now - txq->time_stamp));
|
|
ret = il_force_reset(il, false);
|
|
return (ret == -EAGAIN) ? 0 : 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Making watchdog tick be a quarter of timeout assure we will
|
|
* discover the queue hung between timeout and 1.25*timeout
|
|
*/
|
|
#define IL_WD_TICK(timeout) ((timeout) / 4)
|
|
|
|
/*
|
|
* Watchdog timer callback, we check each tx queue for stuck, if if hung
|
|
* we reset the firmware. If everything is fine just rearm the timer.
|
|
*/
|
|
void
|
|
il_bg_watchdog(unsigned long data)
|
|
{
|
|
struct il_priv *il = (struct il_priv *)data;
|
|
int cnt;
|
|
unsigned long timeout;
|
|
|
|
if (test_bit(S_EXIT_PENDING, &il->status))
|
|
return;
|
|
|
|
timeout = il->cfg->wd_timeout;
|
|
if (timeout == 0)
|
|
return;
|
|
|
|
/* monitor and check for stuck cmd queue */
|
|
if (il_check_stuck_queue(il, il->cmd_queue))
|
|
return;
|
|
|
|
/* monitor and check for other stuck queues */
|
|
for (cnt = 0; cnt < il->hw_params.max_txq_num; cnt++) {
|
|
/* skip as we already checked the command queue */
|
|
if (cnt == il->cmd_queue)
|
|
continue;
|
|
if (il_check_stuck_queue(il, cnt))
|
|
return;
|
|
}
|
|
|
|
mod_timer(&il->watchdog,
|
|
jiffies + msecs_to_jiffies(IL_WD_TICK(timeout)));
|
|
}
|
|
EXPORT_SYMBOL(il_bg_watchdog);
|
|
|
|
void
|
|
il_setup_watchdog(struct il_priv *il)
|
|
{
|
|
unsigned int timeout = il->cfg->wd_timeout;
|
|
|
|
if (timeout)
|
|
mod_timer(&il->watchdog,
|
|
jiffies + msecs_to_jiffies(IL_WD_TICK(timeout)));
|
|
else
|
|
del_timer(&il->watchdog);
|
|
}
|
|
EXPORT_SYMBOL(il_setup_watchdog);
|
|
|
|
/*
|
|
* extended beacon time format
|
|
* time in usec will be changed into a 32-bit value in extended:internal format
|
|
* the extended part is the beacon counts
|
|
* the internal part is the time in usec within one beacon interval
|
|
*/
|
|
u32
|
|
il_usecs_to_beacons(struct il_priv *il, u32 usec, u32 beacon_interval)
|
|
{
|
|
u32 quot;
|
|
u32 rem;
|
|
u32 interval = beacon_interval * TIME_UNIT;
|
|
|
|
if (!interval || !usec)
|
|
return 0;
|
|
|
|
quot =
|
|
(usec /
|
|
interval) & (il_beacon_time_mask_high(il,
|
|
il->hw_params.
|
|
beacon_time_tsf_bits) >> il->
|
|
hw_params.beacon_time_tsf_bits);
|
|
rem =
|
|
(usec % interval) & il_beacon_time_mask_low(il,
|
|
il->hw_params.
|
|
beacon_time_tsf_bits);
|
|
|
|
return (quot << il->hw_params.beacon_time_tsf_bits) + rem;
|
|
}
|
|
EXPORT_SYMBOL(il_usecs_to_beacons);
|
|
|
|
/* base is usually what we get from ucode with each received frame,
|
|
* the same as HW timer counter counting down
|
|
*/
|
|
__le32
|
|
il_add_beacon_time(struct il_priv *il, u32 base, u32 addon,
|
|
u32 beacon_interval)
|
|
{
|
|
u32 base_low = base & il_beacon_time_mask_low(il,
|
|
il->hw_params.
|
|
beacon_time_tsf_bits);
|
|
u32 addon_low = addon & il_beacon_time_mask_low(il,
|
|
il->hw_params.
|
|
beacon_time_tsf_bits);
|
|
u32 interval = beacon_interval * TIME_UNIT;
|
|
u32 res = (base & il_beacon_time_mask_high(il,
|
|
il->hw_params.
|
|
beacon_time_tsf_bits)) +
|
|
(addon & il_beacon_time_mask_high(il,
|
|
il->hw_params.
|
|
beacon_time_tsf_bits));
|
|
|
|
if (base_low > addon_low)
|
|
res += base_low - addon_low;
|
|
else if (base_low < addon_low) {
|
|
res += interval + base_low - addon_low;
|
|
res += (1 << il->hw_params.beacon_time_tsf_bits);
|
|
} else
|
|
res += (1 << il->hw_params.beacon_time_tsf_bits);
|
|
|
|
return cpu_to_le32(res);
|
|
}
|
|
EXPORT_SYMBOL(il_add_beacon_time);
|
|
|
|
#ifdef CONFIG_PM_SLEEP
|
|
|
|
static int
|
|
il_pci_suspend(struct device *device)
|
|
{
|
|
struct pci_dev *pdev = to_pci_dev(device);
|
|
struct il_priv *il = pci_get_drvdata(pdev);
|
|
|
|
/*
|
|
* This function is called when system goes into suspend state
|
|
* mac80211 will call il_mac_stop() from the mac80211 suspend function
|
|
* first but since il_mac_stop() has no knowledge of who the caller is,
|
|
* it will not call apm_ops.stop() to stop the DMA operation.
|
|
* Calling apm_ops.stop here to make sure we stop the DMA.
|
|
*/
|
|
il_apm_stop(il);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
il_pci_resume(struct device *device)
|
|
{
|
|
struct pci_dev *pdev = to_pci_dev(device);
|
|
struct il_priv *il = pci_get_drvdata(pdev);
|
|
bool hw_rfkill = false;
|
|
|
|
/*
|
|
* We disable the RETRY_TIMEOUT register (0x41) to keep
|
|
* PCI Tx retries from interfering with C3 CPU state.
|
|
*/
|
|
pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00);
|
|
|
|
il_enable_interrupts(il);
|
|
|
|
if (!(_il_rd(il, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
|
|
hw_rfkill = true;
|
|
|
|
if (hw_rfkill)
|
|
set_bit(S_RFKILL, &il->status);
|
|
else
|
|
clear_bit(S_RFKILL, &il->status);
|
|
|
|
wiphy_rfkill_set_hw_state(il->hw->wiphy, hw_rfkill);
|
|
|
|
return 0;
|
|
}
|
|
|
|
SIMPLE_DEV_PM_OPS(il_pm_ops, il_pci_suspend, il_pci_resume);
|
|
EXPORT_SYMBOL(il_pm_ops);
|
|
|
|
#endif /* CONFIG_PM_SLEEP */
|
|
|
|
static void
|
|
il_update_qos(struct il_priv *il)
|
|
{
|
|
if (test_bit(S_EXIT_PENDING, &il->status))
|
|
return;
|
|
|
|
il->qos_data.def_qos_parm.qos_flags = 0;
|
|
|
|
if (il->qos_data.qos_active)
|
|
il->qos_data.def_qos_parm.qos_flags |=
|
|
QOS_PARAM_FLG_UPDATE_EDCA_MSK;
|
|
|
|
if (il->ht.enabled)
|
|
il->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
|
|
|
|
D_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
|
|
il->qos_data.qos_active, il->qos_data.def_qos_parm.qos_flags);
|
|
|
|
il_send_cmd_pdu_async(il, C_QOS_PARAM, sizeof(struct il_qosparam_cmd),
|
|
&il->qos_data.def_qos_parm, NULL);
|
|
}
|
|
|
|
/**
|
|
* il_mac_config - mac80211 config callback
|
|
*/
|
|
int
|
|
il_mac_config(struct ieee80211_hw *hw, u32 changed)
|
|
{
|
|
struct il_priv *il = hw->priv;
|
|
const struct il_channel_info *ch_info;
|
|
struct ieee80211_conf *conf = &hw->conf;
|
|
struct ieee80211_channel *channel = conf->chandef.chan;
|
|
struct il_ht_config *ht_conf = &il->current_ht_config;
|
|
unsigned long flags = 0;
|
|
int ret = 0;
|
|
u16 ch;
|
|
int scan_active = 0;
|
|
bool ht_changed = false;
|
|
|
|
mutex_lock(&il->mutex);
|
|
D_MAC80211("enter: channel %d changed 0x%X\n", channel->hw_value,
|
|
changed);
|
|
|
|
if (unlikely(test_bit(S_SCANNING, &il->status))) {
|
|
scan_active = 1;
|
|
D_MAC80211("scan active\n");
|
|
}
|
|
|
|
if (changed &
|
|
(IEEE80211_CONF_CHANGE_SMPS | IEEE80211_CONF_CHANGE_CHANNEL)) {
|
|
/* mac80211 uses static for non-HT which is what we want */
|
|
il->current_ht_config.smps = conf->smps_mode;
|
|
|
|
/*
|
|
* Recalculate chain counts.
|
|
*
|
|
* If monitor mode is enabled then mac80211 will
|
|
* set up the SM PS mode to OFF if an HT channel is
|
|
* configured.
|
|
*/
|
|
if (il->ops->set_rxon_chain)
|
|
il->ops->set_rxon_chain(il);
|
|
}
|
|
|
|
/* during scanning mac80211 will delay channel setting until
|
|
* scan finish with changed = 0
|
|
*/
|
|
if (!changed || (changed & IEEE80211_CONF_CHANGE_CHANNEL)) {
|
|
|
|
if (scan_active)
|
|
goto set_ch_out;
|
|
|
|
ch = channel->hw_value;
|
|
ch_info = il_get_channel_info(il, channel->band, ch);
|
|
if (!il_is_channel_valid(ch_info)) {
|
|
D_MAC80211("leave - invalid channel\n");
|
|
ret = -EINVAL;
|
|
goto set_ch_out;
|
|
}
|
|
|
|
if (il->iw_mode == NL80211_IFTYPE_ADHOC &&
|
|
!il_is_channel_ibss(ch_info)) {
|
|
D_MAC80211("leave - not IBSS channel\n");
|
|
ret = -EINVAL;
|
|
goto set_ch_out;
|
|
}
|
|
|
|
spin_lock_irqsave(&il->lock, flags);
|
|
|
|
/* Configure HT40 channels */
|
|
if (il->ht.enabled != conf_is_ht(conf)) {
|
|
il->ht.enabled = conf_is_ht(conf);
|
|
ht_changed = true;
|
|
}
|
|
if (il->ht.enabled) {
|
|
if (conf_is_ht40_minus(conf)) {
|
|
il->ht.extension_chan_offset =
|
|
IEEE80211_HT_PARAM_CHA_SEC_BELOW;
|
|
il->ht.is_40mhz = true;
|
|
} else if (conf_is_ht40_plus(conf)) {
|
|
il->ht.extension_chan_offset =
|
|
IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
|
|
il->ht.is_40mhz = true;
|
|
} else {
|
|
il->ht.extension_chan_offset =
|
|
IEEE80211_HT_PARAM_CHA_SEC_NONE;
|
|
il->ht.is_40mhz = false;
|
|
}
|
|
} else
|
|
il->ht.is_40mhz = false;
|
|
|
|
/*
|
|
* Default to no protection. Protection mode will
|
|
* later be set from BSS config in il_ht_conf
|
|
*/
|
|
il->ht.protection = IEEE80211_HT_OP_MODE_PROTECTION_NONE;
|
|
|
|
/* if we are switching from ht to 2.4 clear flags
|
|
* from any ht related info since 2.4 does not
|
|
* support ht */
|
|
if ((le16_to_cpu(il->staging.channel) != ch))
|
|
il->staging.flags = 0;
|
|
|
|
il_set_rxon_channel(il, channel);
|
|
il_set_rxon_ht(il, ht_conf);
|
|
|
|
il_set_flags_for_band(il, channel->band, il->vif);
|
|
|
|
spin_unlock_irqrestore(&il->lock, flags);
|
|
|
|
if (il->ops->update_bcast_stations)
|
|
ret = il->ops->update_bcast_stations(il);
|
|
|
|
set_ch_out:
|
|
/* The list of supported rates and rate mask can be different
|
|
* for each band; since the band may have changed, reset
|
|
* the rate mask to what mac80211 lists */
|
|
il_set_rate(il);
|
|
}
|
|
|
|
if (changed & (IEEE80211_CONF_CHANGE_PS | IEEE80211_CONF_CHANGE_IDLE)) {
|
|
ret = il_power_update_mode(il, false);
|
|
if (ret)
|
|
D_MAC80211("Error setting sleep level\n");
|
|
}
|
|
|
|
if (changed & IEEE80211_CONF_CHANGE_POWER) {
|
|
D_MAC80211("TX Power old=%d new=%d\n", il->tx_power_user_lmt,
|
|
conf->power_level);
|
|
|
|
il_set_tx_power(il, conf->power_level, false);
|
|
}
|
|
|
|
if (!il_is_ready(il)) {
|
|
D_MAC80211("leave - not ready\n");
|
|
goto out;
|
|
}
|
|
|
|
if (scan_active)
|
|
goto out;
|
|
|
|
if (memcmp(&il->active, &il->staging, sizeof(il->staging)))
|
|
il_commit_rxon(il);
|
|
else
|
|
D_INFO("Not re-sending same RXON configuration.\n");
|
|
if (ht_changed)
|
|
il_update_qos(il);
|
|
|
|
out:
|
|
D_MAC80211("leave ret %d\n", ret);
|
|
mutex_unlock(&il->mutex);
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(il_mac_config);
|
|
|
|
void
|
|
il_mac_reset_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
|
|
{
|
|
struct il_priv *il = hw->priv;
|
|
unsigned long flags;
|
|
|
|
mutex_lock(&il->mutex);
|
|
D_MAC80211("enter: type %d, addr %pM\n", vif->type, vif->addr);
|
|
|
|
spin_lock_irqsave(&il->lock, flags);
|
|
|
|
memset(&il->current_ht_config, 0, sizeof(struct il_ht_config));
|
|
|
|
/* new association get rid of ibss beacon skb */
|
|
if (il->beacon_skb)
|
|
dev_kfree_skb(il->beacon_skb);
|
|
il->beacon_skb = NULL;
|
|
il->timestamp = 0;
|
|
|
|
spin_unlock_irqrestore(&il->lock, flags);
|
|
|
|
il_scan_cancel_timeout(il, 100);
|
|
if (!il_is_ready_rf(il)) {
|
|
D_MAC80211("leave - not ready\n");
|
|
mutex_unlock(&il->mutex);
|
|
return;
|
|
}
|
|
|
|
/* we are restarting association process */
|
|
il->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
|
|
il_commit_rxon(il);
|
|
|
|
il_set_rate(il);
|
|
|
|
D_MAC80211("leave\n");
|
|
mutex_unlock(&il->mutex);
|
|
}
|
|
EXPORT_SYMBOL(il_mac_reset_tsf);
|
|
|
|
static void
|
|
il_ht_conf(struct il_priv *il, struct ieee80211_vif *vif)
|
|
{
|
|
struct il_ht_config *ht_conf = &il->current_ht_config;
|
|
struct ieee80211_sta *sta;
|
|
struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
|
|
|
|
D_ASSOC("enter:\n");
|
|
|
|
if (!il->ht.enabled)
|
|
return;
|
|
|
|
il->ht.protection =
|
|
bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_PROTECTION;
|
|
il->ht.non_gf_sta_present =
|
|
!!(bss_conf->
|
|
ht_operation_mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
|
|
|
|
ht_conf->single_chain_sufficient = false;
|
|
|
|
switch (vif->type) {
|
|
case NL80211_IFTYPE_STATION:
|
|
rcu_read_lock();
|
|
sta = ieee80211_find_sta(vif, bss_conf->bssid);
|
|
if (sta) {
|
|
struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap;
|
|
int maxstreams;
|
|
|
|
maxstreams =
|
|
(ht_cap->mcs.
|
|
tx_params & IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK)
|
|
>> IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT;
|
|
maxstreams += 1;
|
|
|
|
if (ht_cap->mcs.rx_mask[1] == 0 &&
|
|
ht_cap->mcs.rx_mask[2] == 0)
|
|
ht_conf->single_chain_sufficient = true;
|
|
if (maxstreams <= 1)
|
|
ht_conf->single_chain_sufficient = true;
|
|
} else {
|
|
/*
|
|
* If at all, this can only happen through a race
|
|
* when the AP disconnects us while we're still
|
|
* setting up the connection, in that case mac80211
|
|
* will soon tell us about that.
|
|
*/
|
|
ht_conf->single_chain_sufficient = true;
|
|
}
|
|
rcu_read_unlock();
|
|
break;
|
|
case NL80211_IFTYPE_ADHOC:
|
|
ht_conf->single_chain_sufficient = true;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
D_ASSOC("leave\n");
|
|
}
|
|
|
|
static inline void
|
|
il_set_no_assoc(struct il_priv *il, struct ieee80211_vif *vif)
|
|
{
|
|
/*
|
|
* inform the ucode that there is no longer an
|
|
* association and that no more packets should be
|
|
* sent
|
|
*/
|
|
il->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
|
|
il->staging.assoc_id = 0;
|
|
il_commit_rxon(il);
|
|
}
|
|
|
|
static void
|
|
il_beacon_update(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
|
|
{
|
|
struct il_priv *il = hw->priv;
|
|
unsigned long flags;
|
|
__le64 timestamp;
|
|
struct sk_buff *skb = ieee80211_beacon_get(hw, vif);
|
|
|
|
if (!skb)
|
|
return;
|
|
|
|
D_MAC80211("enter\n");
|
|
|
|
lockdep_assert_held(&il->mutex);
|
|
|
|
if (!il->beacon_enabled) {
|
|
IL_ERR("update beacon with no beaconing enabled\n");
|
|
dev_kfree_skb(skb);
|
|
return;
|
|
}
|
|
|
|
spin_lock_irqsave(&il->lock, flags);
|
|
|
|
if (il->beacon_skb)
|
|
dev_kfree_skb(il->beacon_skb);
|
|
|
|
il->beacon_skb = skb;
|
|
|
|
timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
|
|
il->timestamp = le64_to_cpu(timestamp);
|
|
|
|
D_MAC80211("leave\n");
|
|
spin_unlock_irqrestore(&il->lock, flags);
|
|
|
|
if (!il_is_ready_rf(il)) {
|
|
D_MAC80211("leave - RF not ready\n");
|
|
return;
|
|
}
|
|
|
|
il->ops->post_associate(il);
|
|
}
|
|
|
|
void
|
|
il_mac_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
|
|
struct ieee80211_bss_conf *bss_conf, u32 changes)
|
|
{
|
|
struct il_priv *il = hw->priv;
|
|
int ret;
|
|
|
|
mutex_lock(&il->mutex);
|
|
D_MAC80211("enter: changes 0x%x\n", changes);
|
|
|
|
if (!il_is_alive(il)) {
|
|
D_MAC80211("leave - not alive\n");
|
|
mutex_unlock(&il->mutex);
|
|
return;
|
|
}
|
|
|
|
if (changes & BSS_CHANGED_QOS) {
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&il->lock, flags);
|
|
il->qos_data.qos_active = bss_conf->qos;
|
|
il_update_qos(il);
|
|
spin_unlock_irqrestore(&il->lock, flags);
|
|
}
|
|
|
|
if (changes & BSS_CHANGED_BEACON_ENABLED) {
|
|
/* FIXME: can we remove beacon_enabled ? */
|
|
if (vif->bss_conf.enable_beacon)
|
|
il->beacon_enabled = true;
|
|
else
|
|
il->beacon_enabled = false;
|
|
}
|
|
|
|
if (changes & BSS_CHANGED_BSSID) {
|
|
D_MAC80211("BSSID %pM\n", bss_conf->bssid);
|
|
|
|
/*
|
|
* On passive channel we wait with blocked queues to see if
|
|
* there is traffic on that channel. If no frame will be
|
|
* received (what is very unlikely since scan detects AP on
|
|
* that channel, but theoretically possible), mac80211 associate
|
|
* procedure will time out and mac80211 will call us with NULL
|
|
* bssid. We have to unblock queues on such condition.
|
|
*/
|
|
if (is_zero_ether_addr(bss_conf->bssid))
|
|
il_wake_queues_by_reason(il, IL_STOP_REASON_PASSIVE);
|
|
|
|
/*
|
|
* If there is currently a HW scan going on in the background,
|
|
* then we need to cancel it, otherwise sometimes we are not
|
|
* able to authenticate (FIXME: why ?)
|
|
*/
|
|
if (il_scan_cancel_timeout(il, 100)) {
|
|
D_MAC80211("leave - scan abort failed\n");
|
|
mutex_unlock(&il->mutex);
|
|
return;
|
|
}
|
|
|
|
/* mac80211 only sets assoc when in STATION mode */
|
|
memcpy(il->staging.bssid_addr, bss_conf->bssid, ETH_ALEN);
|
|
|
|
/* FIXME: currently needed in a few places */
|
|
memcpy(il->bssid, bss_conf->bssid, ETH_ALEN);
|
|
}
|
|
|
|
/*
|
|
* This needs to be after setting the BSSID in case
|
|
* mac80211 decides to do both changes at once because
|
|
* it will invoke post_associate.
|
|
*/
|
|
if (vif->type == NL80211_IFTYPE_ADHOC && (changes & BSS_CHANGED_BEACON))
|
|
il_beacon_update(hw, vif);
|
|
|
|
if (changes & BSS_CHANGED_ERP_PREAMBLE) {
|
|
D_MAC80211("ERP_PREAMBLE %d\n", bss_conf->use_short_preamble);
|
|
if (bss_conf->use_short_preamble)
|
|
il->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
|
|
else
|
|
il->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
|
|
}
|
|
|
|
if (changes & BSS_CHANGED_ERP_CTS_PROT) {
|
|
D_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
|
|
if (bss_conf->use_cts_prot && il->band != IEEE80211_BAND_5GHZ)
|
|
il->staging.flags |= RXON_FLG_TGG_PROTECT_MSK;
|
|
else
|
|
il->staging.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
|
|
if (bss_conf->use_cts_prot)
|
|
il->staging.flags |= RXON_FLG_SELF_CTS_EN;
|
|
else
|
|
il->staging.flags &= ~RXON_FLG_SELF_CTS_EN;
|
|
}
|
|
|
|
if (changes & BSS_CHANGED_BASIC_RATES) {
|
|
/* XXX use this information
|
|
*
|
|
* To do that, remove code from il_set_rate() and put something
|
|
* like this here:
|
|
*
|
|
if (A-band)
|
|
il->staging.ofdm_basic_rates =
|
|
bss_conf->basic_rates;
|
|
else
|
|
il->staging.ofdm_basic_rates =
|
|
bss_conf->basic_rates >> 4;
|
|
il->staging.cck_basic_rates =
|
|
bss_conf->basic_rates & 0xF;
|
|
*/
|
|
}
|
|
|
|
if (changes & BSS_CHANGED_HT) {
|
|
il_ht_conf(il, vif);
|
|
|
|
if (il->ops->set_rxon_chain)
|
|
il->ops->set_rxon_chain(il);
|
|
}
|
|
|
|
if (changes & BSS_CHANGED_ASSOC) {
|
|
D_MAC80211("ASSOC %d\n", bss_conf->assoc);
|
|
if (bss_conf->assoc) {
|
|
il->timestamp = bss_conf->sync_tsf;
|
|
|
|
if (!il_is_rfkill(il))
|
|
il->ops->post_associate(il);
|
|
} else
|
|
il_set_no_assoc(il, vif);
|
|
}
|
|
|
|
if (changes && il_is_associated(il) && bss_conf->aid) {
|
|
D_MAC80211("Changes (%#x) while associated\n", changes);
|
|
ret = il_send_rxon_assoc(il);
|
|
if (!ret) {
|
|
/* Sync active_rxon with latest change. */
|
|
memcpy((void *)&il->active, &il->staging,
|
|
sizeof(struct il_rxon_cmd));
|
|
}
|
|
}
|
|
|
|
if (changes & BSS_CHANGED_BEACON_ENABLED) {
|
|
if (vif->bss_conf.enable_beacon) {
|
|
memcpy(il->staging.bssid_addr, bss_conf->bssid,
|
|
ETH_ALEN);
|
|
memcpy(il->bssid, bss_conf->bssid, ETH_ALEN);
|
|
il->ops->config_ap(il);
|
|
} else
|
|
il_set_no_assoc(il, vif);
|
|
}
|
|
|
|
if (changes & BSS_CHANGED_IBSS) {
|
|
ret = il->ops->manage_ibss_station(il, vif,
|
|
bss_conf->ibss_joined);
|
|
if (ret)
|
|
IL_ERR("failed to %s IBSS station %pM\n",
|
|
bss_conf->ibss_joined ? "add" : "remove",
|
|
bss_conf->bssid);
|
|
}
|
|
|
|
D_MAC80211("leave\n");
|
|
mutex_unlock(&il->mutex);
|
|
}
|
|
EXPORT_SYMBOL(il_mac_bss_info_changed);
|
|
|
|
irqreturn_t
|
|
il_isr(int irq, void *data)
|
|
{
|
|
struct il_priv *il = data;
|
|
u32 inta, inta_mask;
|
|
u32 inta_fh;
|
|
unsigned long flags;
|
|
if (!il)
|
|
return IRQ_NONE;
|
|
|
|
spin_lock_irqsave(&il->lock, flags);
|
|
|
|
/* Disable (but don't clear!) interrupts here to avoid
|
|
* back-to-back ISRs and sporadic interrupts from our NIC.
|
|
* If we have something to service, the tasklet will re-enable ints.
|
|
* If we *don't* have something, we'll re-enable before leaving here. */
|
|
inta_mask = _il_rd(il, CSR_INT_MASK); /* just for debug */
|
|
_il_wr(il, CSR_INT_MASK, 0x00000000);
|
|
|
|
/* Discover which interrupts are active/pending */
|
|
inta = _il_rd(il, CSR_INT);
|
|
inta_fh = _il_rd(il, CSR_FH_INT_STATUS);
|
|
|
|
/* Ignore interrupt if there's nothing in NIC to service.
|
|
* This may be due to IRQ shared with another device,
|
|
* or due to sporadic interrupts thrown from our NIC. */
|
|
if (!inta && !inta_fh) {
|
|
D_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
|
|
goto none;
|
|
}
|
|
|
|
if (inta == 0xFFFFFFFF || (inta & 0xFFFFFFF0) == 0xa5a5a5a0) {
|
|
/* Hardware disappeared. It might have already raised
|
|
* an interrupt */
|
|
IL_WARN("HARDWARE GONE?? INTA == 0x%08x\n", inta);
|
|
goto unplugged;
|
|
}
|
|
|
|
D_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n", inta, inta_mask,
|
|
inta_fh);
|
|
|
|
inta &= ~CSR_INT_BIT_SCD;
|
|
|
|
/* il_irq_tasklet() will service interrupts and re-enable them */
|
|
if (likely(inta || inta_fh))
|
|
tasklet_schedule(&il->irq_tasklet);
|
|
|
|
unplugged:
|
|
spin_unlock_irqrestore(&il->lock, flags);
|
|
return IRQ_HANDLED;
|
|
|
|
none:
|
|
/* re-enable interrupts here since we don't have anything to service. */
|
|
/* only Re-enable if disabled by irq */
|
|
if (test_bit(S_INT_ENABLED, &il->status))
|
|
il_enable_interrupts(il);
|
|
spin_unlock_irqrestore(&il->lock, flags);
|
|
return IRQ_NONE;
|
|
}
|
|
EXPORT_SYMBOL(il_isr);
|
|
|
|
/*
|
|
* il_tx_cmd_protection: Set rts/cts. 3945 and 4965 only share this
|
|
* function.
|
|
*/
|
|
void
|
|
il_tx_cmd_protection(struct il_priv *il, struct ieee80211_tx_info *info,
|
|
__le16 fc, __le32 *tx_flags)
|
|
{
|
|
if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) {
|
|
*tx_flags |= TX_CMD_FLG_RTS_MSK;
|
|
*tx_flags &= ~TX_CMD_FLG_CTS_MSK;
|
|
*tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
|
|
|
|
if (!ieee80211_is_mgmt(fc))
|
|
return;
|
|
|
|
switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) {
|
|
case cpu_to_le16(IEEE80211_STYPE_AUTH):
|
|
case cpu_to_le16(IEEE80211_STYPE_DEAUTH):
|
|
case cpu_to_le16(IEEE80211_STYPE_ASSOC_REQ):
|
|
case cpu_to_le16(IEEE80211_STYPE_REASSOC_REQ):
|
|
*tx_flags &= ~TX_CMD_FLG_RTS_MSK;
|
|
*tx_flags |= TX_CMD_FLG_CTS_MSK;
|
|
break;
|
|
}
|
|
} else if (info->control.rates[0].
|
|
flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
|
|
*tx_flags &= ~TX_CMD_FLG_RTS_MSK;
|
|
*tx_flags |= TX_CMD_FLG_CTS_MSK;
|
|
*tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
|
|
}
|
|
}
|
|
EXPORT_SYMBOL(il_tx_cmd_protection);
|