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5570 lines
142 KiB
5570 lines
142 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/****************************************************************************** |
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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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* Contact Information: |
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* Intel Linux Wireless <[email protected]> |
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* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
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*****************************************************************************/ |
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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/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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|
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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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|
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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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|
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return -ETIMEDOUT; |
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} |
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EXPORT_SYMBOL(_il_poll_bit); |
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|
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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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|
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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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|
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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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|
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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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|
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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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/* |
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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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|
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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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|
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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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|
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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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|
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return -ETIMEDOUT; |
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} |
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EXPORT_SYMBOL(il_poll_bit); |
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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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} |
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EXPORT_SYMBOL(il_get_cmd_string); |
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|
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#define HOST_COMPLETE_TIMEOUT (HZ / 2) |
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|
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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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|
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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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|
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BUG_ON(!(cmd->flags & CMD_ASYNC)); |
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|
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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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|
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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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|
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if (test_bit(S_EXIT_PENDING, &il->status)) |
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return -EBUSY; |
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|
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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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|
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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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|
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lockdep_assert_held(&il->mutex); |
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|
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BUG_ON(cmd->flags & CMD_ASYNC); |
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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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ret = 0; |
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goto out; |
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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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cmd.flags |= CMD_ASYNC; |
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cmd.callback = callback; |
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|
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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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|
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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, 0444); |
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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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|
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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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* Adjust led blink rate to compensate on a MAC Clock difference on every HW |
|
* 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 |
|
* to achieve the desired led frequency |
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* The calculation is: (100-averageDeviation)/100 * blinkTime |
|
* 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: " |
|
"use pre-defined blinking time\n"); |
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return time; |
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} |
|
|
|
return (u8) ((time * compensation) >> 6); |
|
} |
|
|
|
/* 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, |
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.interval = IL_DEF_LED_INTRVL |
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}; |
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int ret; |
|
|
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if (!test_bit(S_READY, &il->status)) |
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return -EBUSY; |
|
|
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if (il->blink_on == on && il->blink_off == off) |
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return 0; |
|
|
|
if (off == 0) { |
|
/* led is SOLID_ON */ |
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on = IL_LED_SOLID; |
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} |
|
|
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D_LED("Led blink time compensation=%u\n", |
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il->cfg->led_compensation); |
|
led_cmd.on = |
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il_blink_compensation(il, on, |
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il->cfg->led_compensation); |
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led_cmd.off = |
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il_blink_compensation(il, off, |
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il->cfg->led_compensation); |
|
|
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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) |
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on = IL_LED_SOLID; |
|
|
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il_led_cmd(il, on, 0); |
|
} |
|
|
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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); |
|
|
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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) |
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mode = il->cfg->led_mode; |
|
|
|
il->led.name = |
|
kasprintf(GFP_KERNEL, "%s-led", wiphy_name(il->hw->wiphy)); |
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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; |
|
int addr; |
|
|
|
/* allocate eeprom */ |
|
sz = il->cfg->eeprom_size; |
|
D_EEPROM("NVM size = %d\n", sz); |
|
il->eeprom = kzalloc(sz, GFP_KERNEL); |
|
if (!il->eeprom) |
|
return -ENOMEM; |
|
|
|
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); |
|
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 nl80211_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 = |
|
kcalloc(il->channel_count, sizeof(struct il_channel_info), |
|
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) ? NL80211_BAND_2GHZ : NL80211_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 nl80211_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) ? NL80211_BAND_2GHZ : NL80211_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 nl80211_band band, |
|
u16 channel) |
|
{ |
|
int i; |
|
|
|
switch (band) { |
|
case NL80211_BAND_5GHZ: |
|
for (i = 14; i < il->channel_count; i++) { |
|
if (il->channel_info[i].channel == channel) |
|
return &il->channel_info[i]; |
|
} |
|
break; |
|
case NL80211_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. |
|
*/ |
|
|
|
#define SLP_VEC(X0, X1, X2, X3, X4) { \ |
|
cpu_to_le32(X0), \ |
|
cpu_to_le32(X1), \ |
|
cpu_to_le32(X2), \ |
|
cpu_to_le32(X3), \ |
|
cpu_to_le32(X4) \ |
|
} |
|
|
|
static void |
|
il_build_powertable_cmd(struct il_priv *il, struct il_powertable_cmd *cmd) |
|
{ |
|
static const __le32 interval[3][IL_POWER_VEC_SIZE] = { |
|
SLP_VEC(2, 2, 4, 6, 0xFF), |
|
SLP_VEC(2, 4, 7, 10, 10), |
|
SLP_VEC(4, 7, 10, 10, 0xFF) |
|
}; |
|
int i, dtim_period, no_dtim; |
|
u32 max_sleep; |
|
bool skip; |
|
|
|
memset(cmd, 0, sizeof(*cmd)); |
|
|
|
if (il->power_data.pci_pm) |
|
cmd->flags |= IL_POWER_PCI_PM_MSK; |
|
|
|
/* if no Power Save, we are done */ |
|
if (il->power_data.ps_disabled) |
|
return; |
|
|
|
cmd->flags = IL_POWER_DRIVER_ALLOW_SLEEP_MSK; |
|
cmd->keep_alive_seconds = 0; |
|
cmd->debug_flags = 0; |
|
cmd->rx_data_timeout = cpu_to_le32(25 * 1024); |
|
cmd->tx_data_timeout = cpu_to_le32(25 * 1024); |
|
cmd->keep_alive_beacons = 0; |
|
|
|
dtim_period = il->vif ? il->vif->bss_conf.dtim_period : 0; |
|
|
|
if (dtim_period <= 2) { |
|
memcpy(cmd->sleep_interval, interval[0], sizeof(interval[0])); |
|
no_dtim = 2; |
|
} else if (dtim_period <= 10) { |
|
memcpy(cmd->sleep_interval, interval[1], sizeof(interval[1])); |
|
no_dtim = 2; |
|
} else { |
|
memcpy(cmd->sleep_interval, interval[2], sizeof(interval[2])); |
|
no_dtim = 0; |
|
} |
|
|
|
if (dtim_period == 0) { |
|
dtim_period = 1; |
|
skip = false; |
|
} else { |
|
skip = !!no_dtim; |
|
} |
|
|
|
if (skip) { |
|
__le32 tmp = cmd->sleep_interval[IL_POWER_VEC_SIZE - 1]; |
|
|
|
max_sleep = le32_to_cpu(tmp); |
|
if (max_sleep == 0xFF) |
|
max_sleep = dtim_period * (skip + 1); |
|
else if (max_sleep > dtim_period) |
|
max_sleep = (max_sleep / dtim_period) * dtim_period; |
|
cmd->flags |= IL_POWER_SLEEP_OVER_DTIM_MSK; |
|
} else { |
|
max_sleep = dtim_period; |
|
cmd->flags &= ~IL_POWER_SLEEP_OVER_DTIM_MSK; |
|
} |
|
|
|
for (i = 0; i < IL_POWER_VEC_SIZE; i++) |
|
if (le32_to_cpu(cmd->sleep_interval[i]) > max_sleep) |
|
cmd->sleep_interval[i] = cpu_to_le32(max_sleep); |
|
} |
|
|
|
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_build_powertable_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) |
|
{ |
|
struct cfg80211_scan_info info = { |
|
.aborted = aborted, |
|
}; |
|
|
|
/* check if scan was requested from mac80211 */ |
|
if (il->scan_request) { |
|
D_SCAN("Complete scan in mac80211\n"); |
|
ieee80211_scan_completed(il->hw, &info); |
|
} |
|
|
|
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 == NL80211_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 nl80211_band band, |
|
u8 n_probes) |
|
{ |
|
if (band == NL80211_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 nl80211_band band, |
|
struct ieee80211_vif *vif) |
|
{ |
|
u16 value; |
|
|
|
u16 passive = |
|
(band == |
|
NL80211_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[NL80211_BAND_5GHZ]) |
|
il->scan_tx_ant[NL80211_BAND_5GHZ] = ant_idx; |
|
if (!il->scan_tx_ant[NL80211_BAND_2GHZ]) |
|
il->scan_tx_ant[NL80211_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 ieee80211_scan_request *hw_req) |
|
{ |
|
struct cfg80211_scan_request *req = &hw_req->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) |
|
return ret; |
|
if (flags & CMD_ASYNC) |
|
return 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 == NL80211_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; |
|
fallthrough; |
|
|
|
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; |
|
} |
|
fallthrough; |
|
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 */ |
|
if (txq->cmd) { |
|
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. |
|
* |
|
* 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 */ |
|
if (txq->cmd) { |
|
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 sk_buff *), |
|
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 = |
|
kcalloc(actual_slots, sizeof(struct il_cmd_meta), GFP_KERNEL); |
|
txq->cmd = |
|
kcalloc(actual_slots, sizeof(struct il_device_cmd *), 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); |
|
txq->meta = NULL; |
|
kfree(txq->cmd); |
|
txq->cmd = NULL; |
|
|
|
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; |
|
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; |
|
|
|
#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, 0444); |
|
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 nl80211_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[NL80211_BAND_2GHZ].n_bitrates || |
|
il->bands[NL80211_BAND_5GHZ].n_bitrates) { |
|
D_INFO("Geography modes already initialized.\n"); |
|
set_bit(S_GEO_CONFIGURED, &il->status); |
|
return 0; |
|
} |
|
|
|
channels = |
|
kcalloc(il->channel_count, sizeof(struct ieee80211_channel), |
|
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[NL80211_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, NL80211_BAND_5GHZ); |
|
|
|
sband = &il->bands[NL80211_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, NL80211_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_IR; |
|
|
|
if (!(ch->flags & EEPROM_CHANNEL_ACTIVE)) |
|
geo_ch->flags |= IEEE80211_CHAN_NO_IR; |
|
|
|
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[NL80211_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[NL80211_BAND_2GHZ].n_channels, |
|
il->bands[NL80211_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 nl80211_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 noinline |
|
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_64bits(staging->bssid_addr, active->bssid_addr)); |
|
CHK(!ether_addr_equal_64bits(staging->node_addr, active->node_addr)); |
|
CHK(!ether_addr_equal_64bits(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 nl80211_band band) |
|
{ |
|
const struct il_channel_info *ch_info; |
|
int i; |
|
u8 channel = 0; |
|
u8 min, max; |
|
|
|
if (band == NL80211_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 nl80211_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 == NL80211_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 nl80211_band band, |
|
struct ieee80211_vif *vif) |
|
{ |
|
if (band == NL80211_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) { |
|
ret = pcie_capability_read_word(il->pci_dev, PCI_EXP_LNKCTL, &lctl); |
|
if (!ret && (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); |
|
eth_zero_addr(il->bssid); |
|
|
|
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 = |
|
kcalloc(il->cfg->num_of_queues, |
|
sizeof(struct il_tx_queue), |
|
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, struct ieee80211_vif *vif, |
|
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(struct timer_list *t) |
|
{ |
|
struct il_priv *il = from_timer(il, t, watchdog); |
|
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 il_priv *il = dev_get_drvdata(device); |
|
|
|
/* |
|
* 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)) { |
|
il->power_data.ps_disabled = !(conf->flags & IEEE80211_CONF_PS); |
|
if (!il->power_data.ps_disabled) |
|
IL_WARN_ONCE("Enabling power save might cause firmware crashes\n"); |
|
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 */ |
|
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); |
|
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 != NL80211_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);
|
|
|