![Tomas Winkler](/assets/img/avatar_default.png)
This patch fixes errors reported by checkpatch in iwlwifi drivers Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2675 lines
77 KiB
C
2675 lines
77 KiB
C
/******************************************************************************
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*
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* Copyright(c) 2003 - 2008 Intel Corporation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
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*
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* The full GNU General Public License is included in this distribution in the
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* file called LICENSE.
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*
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* Contact Information:
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* James P. Ketrenos <ipw2100-admin@linux.intel.com>
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* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
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*
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*****************************************************************************/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/version.h>
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#include <linux/init.h>
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#include <linux/pci.h>
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#include <linux/dma-mapping.h>
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#include <linux/delay.h>
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#include <linux/skbuff.h>
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#include <linux/netdevice.h>
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#include <linux/wireless.h>
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#include <linux/firmware.h>
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#include <linux/etherdevice.h>
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#include <asm/unaligned.h>
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#include <net/mac80211.h>
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#include "iwl-3945-core.h"
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#include "iwl-3945.h"
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#include "iwl-helpers.h"
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#include "iwl-3945-rs.h"
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#define IWL_DECLARE_RATE_INFO(r, ip, in, rp, rn, pp, np) \
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[IWL_RATE_##r##M_INDEX] = { IWL_RATE_##r##M_PLCP, \
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IWL_RATE_##r##M_IEEE, \
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IWL_RATE_##ip##M_INDEX, \
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IWL_RATE_##in##M_INDEX, \
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IWL_RATE_##rp##M_INDEX, \
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IWL_RATE_##rn##M_INDEX, \
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IWL_RATE_##pp##M_INDEX, \
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IWL_RATE_##np##M_INDEX, \
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IWL_RATE_##r##M_INDEX_TABLE, \
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IWL_RATE_##ip##M_INDEX_TABLE }
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/*
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* Parameter order:
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* rate, prev rate, next rate, prev tgg rate, next tgg rate
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*
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* If there isn't a valid next or previous rate then INV is used which
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* maps to IWL_RATE_INVALID
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*
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*/
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const struct iwl3945_rate_info iwl3945_rates[IWL_RATE_COUNT] = {
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IWL_DECLARE_RATE_INFO(1, INV, 2, INV, 2, INV, 2), /* 1mbps */
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IWL_DECLARE_RATE_INFO(2, 1, 5, 1, 5, 1, 5), /* 2mbps */
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IWL_DECLARE_RATE_INFO(5, 2, 6, 2, 11, 2, 11), /*5.5mbps */
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IWL_DECLARE_RATE_INFO(11, 9, 12, 5, 12, 5, 18), /* 11mbps */
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IWL_DECLARE_RATE_INFO(6, 5, 9, 5, 11, 5, 11), /* 6mbps */
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IWL_DECLARE_RATE_INFO(9, 6, 11, 5, 11, 5, 11), /* 9mbps */
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IWL_DECLARE_RATE_INFO(12, 11, 18, 11, 18, 11, 18), /* 12mbps */
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IWL_DECLARE_RATE_INFO(18, 12, 24, 12, 24, 11, 24), /* 18mbps */
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IWL_DECLARE_RATE_INFO(24, 18, 36, 18, 36, 18, 36), /* 24mbps */
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IWL_DECLARE_RATE_INFO(36, 24, 48, 24, 48, 24, 48), /* 36mbps */
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IWL_DECLARE_RATE_INFO(48, 36, 54, 36, 54, 36, 54), /* 48mbps */
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IWL_DECLARE_RATE_INFO(54, 48, INV, 48, INV, 48, INV),/* 54mbps */
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};
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/* 1 = enable the iwl3945_disable_events() function */
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#define IWL_EVT_DISABLE (0)
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#define IWL_EVT_DISABLE_SIZE (1532/32)
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/**
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* iwl3945_disable_events - Disable selected events in uCode event log
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*
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* Disable an event by writing "1"s into "disable"
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* bitmap in SRAM. Bit position corresponds to Event # (id/type).
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* Default values of 0 enable uCode events to be logged.
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* Use for only special debugging. This function is just a placeholder as-is,
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* you'll need to provide the special bits! ...
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* ... and set IWL_EVT_DISABLE to 1. */
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void iwl3945_disable_events(struct iwl3945_priv *priv)
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{
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int ret;
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int i;
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u32 base; /* SRAM address of event log header */
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u32 disable_ptr; /* SRAM address of event-disable bitmap array */
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u32 array_size; /* # of u32 entries in array */
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u32 evt_disable[IWL_EVT_DISABLE_SIZE] = {
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0x00000000, /* 31 - 0 Event id numbers */
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0x00000000, /* 63 - 32 */
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0x00000000, /* 95 - 64 */
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0x00000000, /* 127 - 96 */
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0x00000000, /* 159 - 128 */
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0x00000000, /* 191 - 160 */
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0x00000000, /* 223 - 192 */
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0x00000000, /* 255 - 224 */
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0x00000000, /* 287 - 256 */
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0x00000000, /* 319 - 288 */
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0x00000000, /* 351 - 320 */
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0x00000000, /* 383 - 352 */
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0x00000000, /* 415 - 384 */
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0x00000000, /* 447 - 416 */
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0x00000000, /* 479 - 448 */
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0x00000000, /* 511 - 480 */
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0x00000000, /* 543 - 512 */
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0x00000000, /* 575 - 544 */
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0x00000000, /* 607 - 576 */
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0x00000000, /* 639 - 608 */
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0x00000000, /* 671 - 640 */
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0x00000000, /* 703 - 672 */
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0x00000000, /* 735 - 704 */
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0x00000000, /* 767 - 736 */
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0x00000000, /* 799 - 768 */
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0x00000000, /* 831 - 800 */
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0x00000000, /* 863 - 832 */
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0x00000000, /* 895 - 864 */
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0x00000000, /* 927 - 896 */
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0x00000000, /* 959 - 928 */
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0x00000000, /* 991 - 960 */
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0x00000000, /* 1023 - 992 */
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0x00000000, /* 1055 - 1024 */
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0x00000000, /* 1087 - 1056 */
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0x00000000, /* 1119 - 1088 */
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0x00000000, /* 1151 - 1120 */
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0x00000000, /* 1183 - 1152 */
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0x00000000, /* 1215 - 1184 */
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0x00000000, /* 1247 - 1216 */
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0x00000000, /* 1279 - 1248 */
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0x00000000, /* 1311 - 1280 */
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0x00000000, /* 1343 - 1312 */
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0x00000000, /* 1375 - 1344 */
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0x00000000, /* 1407 - 1376 */
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0x00000000, /* 1439 - 1408 */
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0x00000000, /* 1471 - 1440 */
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0x00000000, /* 1503 - 1472 */
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};
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base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
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if (!iwl3945_hw_valid_rtc_data_addr(base)) {
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IWL_ERROR("Invalid event log pointer 0x%08X\n", base);
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return;
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}
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ret = iwl3945_grab_nic_access(priv);
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if (ret) {
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IWL_WARNING("Can not read from adapter at this time.\n");
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return;
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}
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disable_ptr = iwl3945_read_targ_mem(priv, base + (4 * sizeof(u32)));
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array_size = iwl3945_read_targ_mem(priv, base + (5 * sizeof(u32)));
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iwl3945_release_nic_access(priv);
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if (IWL_EVT_DISABLE && (array_size == IWL_EVT_DISABLE_SIZE)) {
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IWL_DEBUG_INFO("Disabling selected uCode log events at 0x%x\n",
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disable_ptr);
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ret = iwl3945_grab_nic_access(priv);
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for (i = 0; i < IWL_EVT_DISABLE_SIZE; i++)
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iwl3945_write_targ_mem(priv,
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disable_ptr + (i * sizeof(u32)),
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evt_disable[i]);
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iwl3945_release_nic_access(priv);
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} else {
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IWL_DEBUG_INFO("Selected uCode log events may be disabled\n");
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IWL_DEBUG_INFO(" by writing \"1\"s into disable bitmap\n");
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IWL_DEBUG_INFO(" in SRAM at 0x%x, size %d u32s\n",
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disable_ptr, array_size);
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}
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}
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static int iwl3945_hwrate_to_plcp_idx(u8 plcp)
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{
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int idx;
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for (idx = 0; idx < IWL_RATE_COUNT; idx++)
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if (iwl3945_rates[idx].plcp == plcp)
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return idx;
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return -1;
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}
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/**
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* iwl3945_get_antenna_flags - Get antenna flags for RXON command
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* @priv: eeprom and antenna fields are used to determine antenna flags
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*
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* priv->eeprom is used to determine if antenna AUX/MAIN are reversed
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* priv->antenna specifies the antenna diversity mode:
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*
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* IWL_ANTENNA_DIVERISTY - NIC selects best antenna by itself
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* IWL_ANTENNA_MAIN - Force MAIN antenna
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* IWL_ANTENNA_AUX - Force AUX antenna
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*/
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__le32 iwl3945_get_antenna_flags(const struct iwl3945_priv *priv)
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{
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switch (priv->antenna) {
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case IWL_ANTENNA_DIVERSITY:
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return 0;
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case IWL_ANTENNA_MAIN:
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if (priv->eeprom.antenna_switch_type)
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return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_B_MSK;
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return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_A_MSK;
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case IWL_ANTENNA_AUX:
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if (priv->eeprom.antenna_switch_type)
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return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_A_MSK;
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return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_B_MSK;
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}
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/* bad antenna selector value */
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IWL_ERROR("Bad antenna selector value (0x%x)\n", priv->antenna);
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return 0; /* "diversity" is default if error */
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}
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#ifdef CONFIG_IWL3945_DEBUG
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#define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
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static const char *iwl3945_get_tx_fail_reason(u32 status)
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{
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switch (status & TX_STATUS_MSK) {
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case TX_STATUS_SUCCESS:
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return "SUCCESS";
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TX_STATUS_ENTRY(SHORT_LIMIT);
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TX_STATUS_ENTRY(LONG_LIMIT);
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TX_STATUS_ENTRY(FIFO_UNDERRUN);
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TX_STATUS_ENTRY(MGMNT_ABORT);
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TX_STATUS_ENTRY(NEXT_FRAG);
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TX_STATUS_ENTRY(LIFE_EXPIRE);
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TX_STATUS_ENTRY(DEST_PS);
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TX_STATUS_ENTRY(ABORTED);
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TX_STATUS_ENTRY(BT_RETRY);
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TX_STATUS_ENTRY(STA_INVALID);
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TX_STATUS_ENTRY(FRAG_DROPPED);
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TX_STATUS_ENTRY(TID_DISABLE);
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TX_STATUS_ENTRY(FRAME_FLUSHED);
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TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL);
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TX_STATUS_ENTRY(TX_LOCKED);
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TX_STATUS_ENTRY(NO_BEACON_ON_RADAR);
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}
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return "UNKNOWN";
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}
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#else
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static inline const char *iwl3945_get_tx_fail_reason(u32 status)
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{
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return "";
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}
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#endif
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/**
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* iwl3945_tx_queue_reclaim - Reclaim Tx queue entries already Tx'd
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*
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* When FW advances 'R' index, all entries between old and new 'R' index
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* need to be reclaimed. As result, some free space forms. If there is
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* enough free space (> low mark), wake the stack that feeds us.
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*/
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static void iwl3945_tx_queue_reclaim(struct iwl3945_priv *priv,
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int txq_id, int index)
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{
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struct iwl3945_tx_queue *txq = &priv->txq[txq_id];
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struct iwl3945_queue *q = &txq->q;
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struct iwl3945_tx_info *tx_info;
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BUG_ON(txq_id == IWL_CMD_QUEUE_NUM);
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for (index = iwl_queue_inc_wrap(index, q->n_bd); q->read_ptr != index;
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q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd)) {
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tx_info = &txq->txb[txq->q.read_ptr];
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ieee80211_tx_status_irqsafe(priv->hw, tx_info->skb[0]);
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tx_info->skb[0] = NULL;
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iwl3945_hw_txq_free_tfd(priv, txq);
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}
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if (iwl3945_queue_space(q) > q->low_mark && (txq_id >= 0) &&
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(txq_id != IWL_CMD_QUEUE_NUM) &&
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priv->mac80211_registered)
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ieee80211_wake_queue(priv->hw, txq_id);
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}
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/**
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* iwl3945_rx_reply_tx - Handle Tx response
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*/
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static void iwl3945_rx_reply_tx(struct iwl3945_priv *priv,
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struct iwl3945_rx_mem_buffer *rxb)
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{
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struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
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u16 sequence = le16_to_cpu(pkt->hdr.sequence);
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int txq_id = SEQ_TO_QUEUE(sequence);
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int index = SEQ_TO_INDEX(sequence);
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struct iwl3945_tx_queue *txq = &priv->txq[txq_id];
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struct ieee80211_tx_info *info;
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struct iwl3945_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
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u32 status = le32_to_cpu(tx_resp->status);
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int rate_idx;
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if ((index >= txq->q.n_bd) || (iwl3945_x2_queue_used(&txq->q, index) == 0)) {
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IWL_ERROR("Read index for DMA queue txq_id (%d) index %d "
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"is out of range [0-%d] %d %d\n", txq_id,
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index, txq->q.n_bd, txq->q.write_ptr,
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txq->q.read_ptr);
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return;
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}
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info = IEEE80211_SKB_CB(txq->txb[txq->q.read_ptr].skb[0]);
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memset(&info->status, 0, sizeof(info->status));
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info->status.retry_count = tx_resp->failure_frame;
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/* tx_status->rts_retry_count = tx_resp->failure_rts; */
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info->flags |= ((status & TX_STATUS_MSK) == TX_STATUS_SUCCESS) ?
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IEEE80211_TX_STAT_ACK : 0;
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IWL_DEBUG_TX("Tx queue %d Status %s (0x%08x) plcp rate %d retries %d\n",
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txq_id, iwl3945_get_tx_fail_reason(status), status,
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tx_resp->rate, tx_resp->failure_frame);
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rate_idx = iwl3945_hwrate_to_plcp_idx(tx_resp->rate);
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if (info->band == IEEE80211_BAND_5GHZ)
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rate_idx -= IWL_FIRST_OFDM_RATE;
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info->tx_rate_idx = rate_idx;
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IWL_DEBUG_TX_REPLY("Tx queue reclaim %d\n", index);
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iwl3945_tx_queue_reclaim(priv, txq_id, index);
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if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK))
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IWL_ERROR("TODO: Implement Tx ABORT REQUIRED!!!\n");
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}
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/*****************************************************************************
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*
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* Intel PRO/Wireless 3945ABG/BG Network Connection
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*
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* RX handler implementations
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*
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*****************************************************************************/
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void iwl3945_hw_rx_statistics(struct iwl3945_priv *priv, struct iwl3945_rx_mem_buffer *rxb)
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{
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struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
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IWL_DEBUG_RX("Statistics notification received (%d vs %d).\n",
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(int)sizeof(struct iwl3945_notif_statistics),
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le32_to_cpu(pkt->len));
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memcpy(&priv->statistics, pkt->u.raw, sizeof(priv->statistics));
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iwl3945_led_background(priv);
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priv->last_statistics_time = jiffies;
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}
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/******************************************************************************
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*
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* Misc. internal state and helper functions
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*
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******************************************************************************/
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#ifdef CONFIG_IWL3945_DEBUG
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/**
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* iwl3945_report_frame - dump frame to syslog during debug sessions
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*
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* You may hack this function to show different aspects of received frames,
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* including selective frame dumps.
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* group100 parameter selects whether to show 1 out of 100 good frames.
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*/
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static void iwl3945_dbg_report_frame(struct iwl3945_priv *priv,
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struct iwl3945_rx_packet *pkt,
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struct ieee80211_hdr *header, int group100)
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{
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u32 to_us;
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u32 print_summary = 0;
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u32 print_dump = 0; /* set to 1 to dump all frames' contents */
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u32 hundred = 0;
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u32 dataframe = 0;
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__le16 fc;
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u16 seq_ctl;
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u16 channel;
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u16 phy_flags;
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u16 length;
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u16 status;
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u16 bcn_tmr;
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u32 tsf_low;
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u64 tsf;
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u8 rssi;
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u8 agc;
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u16 sig_avg;
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u16 noise_diff;
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struct iwl3945_rx_frame_stats *rx_stats = IWL_RX_STATS(pkt);
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struct iwl3945_rx_frame_hdr *rx_hdr = IWL_RX_HDR(pkt);
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struct iwl3945_rx_frame_end *rx_end = IWL_RX_END(pkt);
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u8 *data = IWL_RX_DATA(pkt);
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/* MAC header */
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fc = header->frame_control;
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seq_ctl = le16_to_cpu(header->seq_ctrl);
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/* metadata */
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channel = le16_to_cpu(rx_hdr->channel);
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phy_flags = le16_to_cpu(rx_hdr->phy_flags);
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length = le16_to_cpu(rx_hdr->len);
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/* end-of-frame status and timestamp */
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status = le32_to_cpu(rx_end->status);
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bcn_tmr = le32_to_cpu(rx_end->beacon_timestamp);
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tsf_low = le64_to_cpu(rx_end->timestamp) & 0x0ffffffff;
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tsf = le64_to_cpu(rx_end->timestamp);
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/* signal statistics */
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rssi = rx_stats->rssi;
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agc = rx_stats->agc;
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sig_avg = le16_to_cpu(rx_stats->sig_avg);
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noise_diff = le16_to_cpu(rx_stats->noise_diff);
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to_us = !compare_ether_addr(header->addr1, priv->mac_addr);
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/* if data frame is to us and all is good,
|
|
* (optionally) print summary for only 1 out of every 100 */
|
|
if (to_us && (fc & ~cpu_to_le16(IEEE80211_FCTL_PROTECTED)) ==
|
|
cpu_to_le16(IEEE80211_FCTL_FROMDS | IEEE80211_FTYPE_DATA)) {
|
|
dataframe = 1;
|
|
if (!group100)
|
|
print_summary = 1; /* print each frame */
|
|
else if (priv->framecnt_to_us < 100) {
|
|
priv->framecnt_to_us++;
|
|
print_summary = 0;
|
|
} else {
|
|
priv->framecnt_to_us = 0;
|
|
print_summary = 1;
|
|
hundred = 1;
|
|
}
|
|
} else {
|
|
/* print summary for all other frames */
|
|
print_summary = 1;
|
|
}
|
|
|
|
if (print_summary) {
|
|
char *title;
|
|
int rate;
|
|
|
|
if (hundred)
|
|
title = "100Frames";
|
|
else if (ieee80211_has_retry(fc))
|
|
title = "Retry";
|
|
else if (ieee80211_is_assoc_resp(fc))
|
|
title = "AscRsp";
|
|
else if (ieee80211_is_reassoc_resp(fc))
|
|
title = "RasRsp";
|
|
else if (ieee80211_is_probe_resp(fc)) {
|
|
title = "PrbRsp";
|
|
print_dump = 1; /* dump frame contents */
|
|
} else if (ieee80211_is_beacon(fc)) {
|
|
title = "Beacon";
|
|
print_dump = 1; /* dump frame contents */
|
|
} else if (ieee80211_is_atim(fc))
|
|
title = "ATIM";
|
|
else if (ieee80211_is_auth(fc))
|
|
title = "Auth";
|
|
else if (ieee80211_is_deauth(fc))
|
|
title = "DeAuth";
|
|
else if (ieee80211_is_disassoc(fc))
|
|
title = "DisAssoc";
|
|
else
|
|
title = "Frame";
|
|
|
|
rate = iwl3945_hwrate_to_plcp_idx(rx_hdr->rate);
|
|
if (rate == -1)
|
|
rate = 0;
|
|
else
|
|
rate = iwl3945_rates[rate].ieee / 2;
|
|
|
|
/* print frame summary.
|
|
* MAC addresses show just the last byte (for brevity),
|
|
* but you can hack it to show more, if you'd like to. */
|
|
if (dataframe)
|
|
IWL_DEBUG_RX("%s: mhd=0x%04x, dst=0x%02x, "
|
|
"len=%u, rssi=%d, chnl=%d, rate=%d, \n",
|
|
title, le16_to_cpu(fc), header->addr1[5],
|
|
length, rssi, channel, rate);
|
|
else {
|
|
/* src/dst addresses assume managed mode */
|
|
IWL_DEBUG_RX("%s: 0x%04x, dst=0x%02x, "
|
|
"src=0x%02x, rssi=%u, tim=%lu usec, "
|
|
"phy=0x%02x, chnl=%d\n",
|
|
title, le16_to_cpu(fc), header->addr1[5],
|
|
header->addr3[5], rssi,
|
|
tsf_low - priv->scan_start_tsf,
|
|
phy_flags, channel);
|
|
}
|
|
}
|
|
if (print_dump)
|
|
iwl3945_print_hex_dump(IWL_DL_RX, data, length);
|
|
}
|
|
#else
|
|
static inline void iwl3945_dbg_report_frame(struct iwl3945_priv *priv,
|
|
struct iwl3945_rx_packet *pkt,
|
|
struct ieee80211_hdr *header, int group100)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
/* This is necessary only for a number of statistics, see the caller. */
|
|
static int iwl3945_is_network_packet(struct iwl3945_priv *priv,
|
|
struct ieee80211_hdr *header)
|
|
{
|
|
/* Filter incoming packets to determine if they are targeted toward
|
|
* this network, discarding packets coming from ourselves */
|
|
switch (priv->iw_mode) {
|
|
case IEEE80211_IF_TYPE_IBSS: /* Header: Dest. | Source | BSSID */
|
|
/* packets to our IBSS update information */
|
|
return !compare_ether_addr(header->addr3, priv->bssid);
|
|
case IEEE80211_IF_TYPE_STA: /* Header: Dest. | AP{BSSID} | Source */
|
|
/* packets to our IBSS update information */
|
|
return !compare_ether_addr(header->addr2, priv->bssid);
|
|
default:
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
static void iwl3945_add_radiotap(struct iwl3945_priv *priv,
|
|
struct sk_buff *skb,
|
|
struct iwl3945_rx_frame_hdr *rx_hdr,
|
|
struct ieee80211_rx_status *stats)
|
|
{
|
|
/* First cache any information we need before we overwrite
|
|
* the information provided in the skb from the hardware */
|
|
s8 signal = stats->signal;
|
|
s8 noise = 0;
|
|
int rate = stats->rate_idx;
|
|
u64 tsf = stats->mactime;
|
|
__le16 phy_flags_hw = rx_hdr->phy_flags, antenna;
|
|
|
|
struct iwl3945_rt_rx_hdr {
|
|
struct ieee80211_radiotap_header rt_hdr;
|
|
__le64 rt_tsf; /* TSF */
|
|
u8 rt_flags; /* radiotap packet flags */
|
|
u8 rt_rate; /* rate in 500kb/s */
|
|
__le16 rt_channelMHz; /* channel in MHz */
|
|
__le16 rt_chbitmask; /* channel bitfield */
|
|
s8 rt_dbmsignal; /* signal in dBm, kluged to signed */
|
|
s8 rt_dbmnoise;
|
|
u8 rt_antenna; /* antenna number */
|
|
} __attribute__ ((packed)) *iwl3945_rt;
|
|
|
|
if (skb_headroom(skb) < sizeof(*iwl3945_rt)) {
|
|
if (net_ratelimit())
|
|
printk(KERN_ERR "not enough headroom [%d] for "
|
|
"radiotap head [%zd]\n",
|
|
skb_headroom(skb), sizeof(*iwl3945_rt));
|
|
return;
|
|
}
|
|
|
|
/* put radiotap header in front of 802.11 header and data */
|
|
iwl3945_rt = (void *)skb_push(skb, sizeof(*iwl3945_rt));
|
|
|
|
/* initialise radiotap header */
|
|
iwl3945_rt->rt_hdr.it_version = PKTHDR_RADIOTAP_VERSION;
|
|
iwl3945_rt->rt_hdr.it_pad = 0;
|
|
|
|
/* total header + data */
|
|
put_unaligned_le16(sizeof(*iwl3945_rt), &iwl3945_rt->rt_hdr.it_len);
|
|
|
|
/* Indicate all the fields we add to the radiotap header */
|
|
put_unaligned_le32((1 << IEEE80211_RADIOTAP_TSFT) |
|
|
(1 << IEEE80211_RADIOTAP_FLAGS) |
|
|
(1 << IEEE80211_RADIOTAP_RATE) |
|
|
(1 << IEEE80211_RADIOTAP_CHANNEL) |
|
|
(1 << IEEE80211_RADIOTAP_DBM_ANTSIGNAL) |
|
|
(1 << IEEE80211_RADIOTAP_DBM_ANTNOISE) |
|
|
(1 << IEEE80211_RADIOTAP_ANTENNA),
|
|
&iwl3945_rt->rt_hdr.it_present);
|
|
|
|
/* Zero the flags, we'll add to them as we go */
|
|
iwl3945_rt->rt_flags = 0;
|
|
|
|
put_unaligned_le64(tsf, &iwl3945_rt->rt_tsf);
|
|
|
|
iwl3945_rt->rt_dbmsignal = signal;
|
|
iwl3945_rt->rt_dbmnoise = noise;
|
|
|
|
/* Convert the channel frequency and set the flags */
|
|
put_unaligned_le16(stats->freq, &iwl3945_rt->rt_channelMHz);
|
|
if (!(phy_flags_hw & RX_RES_PHY_FLAGS_BAND_24_MSK))
|
|
put_unaligned_le16(IEEE80211_CHAN_OFDM | IEEE80211_CHAN_5GHZ,
|
|
&iwl3945_rt->rt_chbitmask);
|
|
else if (phy_flags_hw & RX_RES_PHY_FLAGS_MOD_CCK_MSK)
|
|
put_unaligned_le16(IEEE80211_CHAN_CCK | IEEE80211_CHAN_2GHZ,
|
|
&iwl3945_rt->rt_chbitmask);
|
|
else /* 802.11g */
|
|
put_unaligned_le16(IEEE80211_CHAN_OFDM | IEEE80211_CHAN_2GHZ,
|
|
&iwl3945_rt->rt_chbitmask);
|
|
|
|
if (rate == -1)
|
|
iwl3945_rt->rt_rate = 0;
|
|
else {
|
|
if (stats->band == IEEE80211_BAND_5GHZ)
|
|
rate += IWL_FIRST_OFDM_RATE;
|
|
|
|
iwl3945_rt->rt_rate = iwl3945_rates[rate].ieee;
|
|
}
|
|
|
|
/* antenna number */
|
|
antenna = phy_flags_hw & RX_RES_PHY_FLAGS_ANTENNA_MSK;
|
|
iwl3945_rt->rt_antenna = le16_to_cpu(antenna) >> 4;
|
|
|
|
/* set the preamble flag if we have it */
|
|
if (phy_flags_hw & RX_RES_PHY_FLAGS_SHORT_PREAMBLE_MSK)
|
|
iwl3945_rt->rt_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
|
|
|
|
stats->flag |= RX_FLAG_RADIOTAP;
|
|
}
|
|
|
|
static void iwl3945_pass_packet_to_mac80211(struct iwl3945_priv *priv,
|
|
struct iwl3945_rx_mem_buffer *rxb,
|
|
struct ieee80211_rx_status *stats)
|
|
{
|
|
struct iwl3945_rx_packet *pkt = (struct iwl3945_rx_packet *)rxb->skb->data;
|
|
#ifdef CONFIG_IWL3945_LEDS
|
|
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)IWL_RX_DATA(pkt);
|
|
#endif
|
|
struct iwl3945_rx_frame_hdr *rx_hdr = IWL_RX_HDR(pkt);
|
|
struct iwl3945_rx_frame_end *rx_end = IWL_RX_END(pkt);
|
|
short len = le16_to_cpu(rx_hdr->len);
|
|
|
|
/* We received data from the HW, so stop the watchdog */
|
|
if (unlikely((len + IWL_RX_FRAME_SIZE) > skb_tailroom(rxb->skb))) {
|
|
IWL_DEBUG_DROP("Corruption detected!\n");
|
|
return;
|
|
}
|
|
|
|
/* We only process data packets if the interface is open */
|
|
if (unlikely(!priv->is_open)) {
|
|
IWL_DEBUG_DROP_LIMIT
|
|
("Dropping packet while interface is not open.\n");
|
|
return;
|
|
}
|
|
|
|
skb_reserve(rxb->skb, (void *)rx_hdr->payload - (void *)pkt);
|
|
/* Set the size of the skb to the size of the frame */
|
|
skb_put(rxb->skb, le16_to_cpu(rx_hdr->len));
|
|
|
|
if (iwl3945_param_hwcrypto)
|
|
iwl3945_set_decrypted_flag(priv, rxb->skb,
|
|
le32_to_cpu(rx_end->status), stats);
|
|
|
|
if (priv->add_radiotap)
|
|
iwl3945_add_radiotap(priv, rxb->skb, rx_hdr, stats);
|
|
|
|
#ifdef CONFIG_IWL3945_LEDS
|
|
if (ieee80211_is_data(hdr->frame_control))
|
|
priv->rxtxpackets += len;
|
|
#endif
|
|
ieee80211_rx_irqsafe(priv->hw, rxb->skb, stats);
|
|
rxb->skb = NULL;
|
|
}
|
|
|
|
#define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
|
|
|
|
static void iwl3945_rx_reply_rx(struct iwl3945_priv *priv,
|
|
struct iwl3945_rx_mem_buffer *rxb)
|
|
{
|
|
struct ieee80211_hdr *header;
|
|
struct ieee80211_rx_status rx_status;
|
|
struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
|
|
struct iwl3945_rx_frame_stats *rx_stats = IWL_RX_STATS(pkt);
|
|
struct iwl3945_rx_frame_hdr *rx_hdr = IWL_RX_HDR(pkt);
|
|
struct iwl3945_rx_frame_end *rx_end = IWL_RX_END(pkt);
|
|
int snr;
|
|
u16 rx_stats_sig_avg = le16_to_cpu(rx_stats->sig_avg);
|
|
u16 rx_stats_noise_diff = le16_to_cpu(rx_stats->noise_diff);
|
|
u8 network_packet;
|
|
|
|
rx_status.antenna = 0;
|
|
rx_status.flag = 0;
|
|
rx_status.mactime = le64_to_cpu(rx_end->timestamp);
|
|
rx_status.freq =
|
|
ieee80211_channel_to_frequency(le16_to_cpu(rx_hdr->channel));
|
|
rx_status.band = (rx_hdr->phy_flags & RX_RES_PHY_FLAGS_BAND_24_MSK) ?
|
|
IEEE80211_BAND_2GHZ : IEEE80211_BAND_5GHZ;
|
|
|
|
rx_status.rate_idx = iwl3945_hwrate_to_plcp_idx(rx_hdr->rate);
|
|
if (rx_status.band == IEEE80211_BAND_5GHZ)
|
|
rx_status.rate_idx -= IWL_FIRST_OFDM_RATE;
|
|
|
|
if ((unlikely(rx_stats->phy_count > 20))) {
|
|
IWL_DEBUG_DROP
|
|
("dsp size out of range [0,20]: "
|
|
"%d/n", rx_stats->phy_count);
|
|
return;
|
|
}
|
|
|
|
if (!(rx_end->status & RX_RES_STATUS_NO_CRC32_ERROR)
|
|
|| !(rx_end->status & RX_RES_STATUS_NO_RXE_OVERFLOW)) {
|
|
IWL_DEBUG_RX("Bad CRC or FIFO: 0x%08X.\n", rx_end->status);
|
|
return;
|
|
}
|
|
|
|
|
|
|
|
/* Convert 3945's rssi indicator to dBm */
|
|
rx_status.signal = rx_stats->rssi - IWL_RSSI_OFFSET;
|
|
|
|
/* Set default noise value to -127 */
|
|
if (priv->last_rx_noise == 0)
|
|
priv->last_rx_noise = IWL_NOISE_MEAS_NOT_AVAILABLE;
|
|
|
|
/* 3945 provides noise info for OFDM frames only.
|
|
* sig_avg and noise_diff are measured by the 3945's digital signal
|
|
* processor (DSP), and indicate linear levels of signal level and
|
|
* distortion/noise within the packet preamble after
|
|
* automatic gain control (AGC). sig_avg should stay fairly
|
|
* constant if the radio's AGC is working well.
|
|
* Since these values are linear (not dB or dBm), linear
|
|
* signal-to-noise ratio (SNR) is (sig_avg / noise_diff).
|
|
* Convert linear SNR to dB SNR, then subtract that from rssi dBm
|
|
* to obtain noise level in dBm.
|
|
* Calculate rx_status.signal (quality indicator in %) based on SNR. */
|
|
if (rx_stats_noise_diff) {
|
|
snr = rx_stats_sig_avg / rx_stats_noise_diff;
|
|
rx_status.noise = rx_status.signal -
|
|
iwl3945_calc_db_from_ratio(snr);
|
|
rx_status.qual = iwl3945_calc_sig_qual(rx_status.signal,
|
|
rx_status.noise);
|
|
|
|
/* If noise info not available, calculate signal quality indicator (%)
|
|
* using just the dBm signal level. */
|
|
} else {
|
|
rx_status.noise = priv->last_rx_noise;
|
|
rx_status.qual = iwl3945_calc_sig_qual(rx_status.signal, 0);
|
|
}
|
|
|
|
|
|
IWL_DEBUG_STATS("Rssi %d noise %d qual %d sig_avg %d noise_diff %d\n",
|
|
rx_status.signal, rx_status.noise, rx_status.qual,
|
|
rx_stats_sig_avg, rx_stats_noise_diff);
|
|
|
|
header = (struct ieee80211_hdr *)IWL_RX_DATA(pkt);
|
|
|
|
network_packet = iwl3945_is_network_packet(priv, header);
|
|
|
|
IWL_DEBUG_STATS_LIMIT("[%c] %d RSSI:%d Signal:%u, Noise:%u, Rate:%u\n",
|
|
network_packet ? '*' : ' ',
|
|
le16_to_cpu(rx_hdr->channel),
|
|
rx_status.signal, rx_status.signal,
|
|
rx_status.noise, rx_status.rate_idx);
|
|
|
|
#ifdef CONFIG_IWL3945_DEBUG
|
|
if (iwl3945_debug_level & (IWL_DL_RX))
|
|
/* Set "1" to report good data frames in groups of 100 */
|
|
iwl3945_dbg_report_frame(priv, pkt, header, 1);
|
|
#endif
|
|
|
|
if (network_packet) {
|
|
priv->last_beacon_time = le32_to_cpu(rx_end->beacon_timestamp);
|
|
priv->last_tsf = le64_to_cpu(rx_end->timestamp);
|
|
priv->last_rx_rssi = rx_status.signal;
|
|
priv->last_rx_noise = rx_status.noise;
|
|
}
|
|
|
|
if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
|
|
iwl3945_pass_packet_to_mac80211(priv, rxb, &rx_status);
|
|
return;
|
|
}
|
|
|
|
switch (le16_to_cpu(header->frame_control) & IEEE80211_FCTL_FTYPE) {
|
|
case IEEE80211_FTYPE_MGMT:
|
|
switch (le16_to_cpu(header->frame_control) &
|
|
IEEE80211_FCTL_STYPE) {
|
|
case IEEE80211_STYPE_PROBE_RESP:
|
|
case IEEE80211_STYPE_BEACON:{
|
|
/* If this is a beacon or probe response for
|
|
* our network then cache the beacon
|
|
* timestamp */
|
|
if ((((priv->iw_mode == IEEE80211_IF_TYPE_STA)
|
|
&& !compare_ether_addr(header->addr2,
|
|
priv->bssid)) ||
|
|
((priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
|
|
&& !compare_ether_addr(header->addr3,
|
|
priv->bssid)))) {
|
|
struct ieee80211_mgmt *mgmt =
|
|
(struct ieee80211_mgmt *)header;
|
|
__le32 *pos;
|
|
pos = (__le32 *)&mgmt->u.beacon.
|
|
timestamp;
|
|
priv->timestamp0 = le32_to_cpu(pos[0]);
|
|
priv->timestamp1 = le32_to_cpu(pos[1]);
|
|
priv->beacon_int = le16_to_cpu(
|
|
mgmt->u.beacon.beacon_int);
|
|
if (priv->call_post_assoc_from_beacon &&
|
|
(priv->iw_mode ==
|
|
IEEE80211_IF_TYPE_STA))
|
|
queue_work(priv->workqueue,
|
|
&priv->post_associate.work);
|
|
|
|
priv->call_post_assoc_from_beacon = 0;
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
case IEEE80211_STYPE_ACTION:
|
|
/* TODO: Parse 802.11h frames for CSA... */
|
|
break;
|
|
|
|
/*
|
|
* TODO: Use the new callback function from
|
|
* mac80211 instead of sniffing these packets.
|
|
*/
|
|
case IEEE80211_STYPE_ASSOC_RESP:
|
|
case IEEE80211_STYPE_REASSOC_RESP:{
|
|
struct ieee80211_mgmt *mgnt =
|
|
(struct ieee80211_mgmt *)header;
|
|
|
|
/* We have just associated, give some
|
|
* time for the 4-way handshake if
|
|
* any. Don't start scan too early. */
|
|
priv->next_scan_jiffies = jiffies +
|
|
IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
|
|
|
|
priv->assoc_id = (~((1 << 15) | (1 << 14)) &
|
|
le16_to_cpu(mgnt->u.
|
|
assoc_resp.aid));
|
|
priv->assoc_capability =
|
|
le16_to_cpu(mgnt->u.assoc_resp.capab_info);
|
|
if (priv->beacon_int)
|
|
queue_work(priv->workqueue,
|
|
&priv->post_associate.work);
|
|
else
|
|
priv->call_post_assoc_from_beacon = 1;
|
|
break;
|
|
}
|
|
|
|
case IEEE80211_STYPE_PROBE_REQ:{
|
|
DECLARE_MAC_BUF(mac1);
|
|
DECLARE_MAC_BUF(mac2);
|
|
DECLARE_MAC_BUF(mac3);
|
|
if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
|
|
IWL_DEBUG_DROP
|
|
("Dropping (non network): %s"
|
|
", %s, %s\n",
|
|
print_mac(mac1, header->addr1),
|
|
print_mac(mac2, header->addr2),
|
|
print_mac(mac3, header->addr3));
|
|
return;
|
|
}
|
|
}
|
|
|
|
case IEEE80211_FTYPE_DATA:
|
|
/* fall through */
|
|
default:
|
|
iwl3945_pass_packet_to_mac80211(priv, rxb, &rx_status);
|
|
break;
|
|
}
|
|
}
|
|
|
|
int iwl3945_hw_txq_attach_buf_to_tfd(struct iwl3945_priv *priv, void *ptr,
|
|
dma_addr_t addr, u16 len)
|
|
{
|
|
int count;
|
|
u32 pad;
|
|
struct iwl3945_tfd_frame *tfd = (struct iwl3945_tfd_frame *)ptr;
|
|
|
|
count = TFD_CTL_COUNT_GET(le32_to_cpu(tfd->control_flags));
|
|
pad = TFD_CTL_PAD_GET(le32_to_cpu(tfd->control_flags));
|
|
|
|
if ((count >= NUM_TFD_CHUNKS) || (count < 0)) {
|
|
IWL_ERROR("Error can not send more than %d chunks\n",
|
|
NUM_TFD_CHUNKS);
|
|
return -EINVAL;
|
|
}
|
|
|
|
tfd->pa[count].addr = cpu_to_le32(addr);
|
|
tfd->pa[count].len = cpu_to_le32(len);
|
|
|
|
count++;
|
|
|
|
tfd->control_flags = cpu_to_le32(TFD_CTL_COUNT_SET(count) |
|
|
TFD_CTL_PAD_SET(pad));
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* iwl3945_hw_txq_free_tfd - Free one TFD, those at index [txq->q.read_ptr]
|
|
*
|
|
* Does NOT advance any indexes
|
|
*/
|
|
int iwl3945_hw_txq_free_tfd(struct iwl3945_priv *priv, struct iwl3945_tx_queue *txq)
|
|
{
|
|
struct iwl3945_tfd_frame *bd_tmp = (struct iwl3945_tfd_frame *)&txq->bd[0];
|
|
struct iwl3945_tfd_frame *bd = &bd_tmp[txq->q.read_ptr];
|
|
struct pci_dev *dev = priv->pci_dev;
|
|
int i;
|
|
int counter;
|
|
|
|
/* classify bd */
|
|
if (txq->q.id == IWL_CMD_QUEUE_NUM)
|
|
/* nothing to cleanup after for host commands */
|
|
return 0;
|
|
|
|
/* sanity check */
|
|
counter = TFD_CTL_COUNT_GET(le32_to_cpu(bd->control_flags));
|
|
if (counter > NUM_TFD_CHUNKS) {
|
|
IWL_ERROR("Too many chunks: %i\n", counter);
|
|
/* @todo issue fatal error, it is quite serious situation */
|
|
return 0;
|
|
}
|
|
|
|
/* unmap chunks if any */
|
|
|
|
for (i = 1; i < counter; i++) {
|
|
pci_unmap_single(dev, le32_to_cpu(bd->pa[i].addr),
|
|
le32_to_cpu(bd->pa[i].len), PCI_DMA_TODEVICE);
|
|
if (txq->txb[txq->q.read_ptr].skb[0]) {
|
|
struct sk_buff *skb = txq->txb[txq->q.read_ptr].skb[0];
|
|
if (txq->txb[txq->q.read_ptr].skb[0]) {
|
|
/* Can be called from interrupt context */
|
|
dev_kfree_skb_any(skb);
|
|
txq->txb[txq->q.read_ptr].skb[0] = NULL;
|
|
}
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
u8 iwl3945_hw_find_station(struct iwl3945_priv *priv, const u8 *addr)
|
|
{
|
|
int i;
|
|
int ret = IWL_INVALID_STATION;
|
|
unsigned long flags;
|
|
DECLARE_MAC_BUF(mac);
|
|
|
|
spin_lock_irqsave(&priv->sta_lock, flags);
|
|
for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++)
|
|
if ((priv->stations[i].used) &&
|
|
(!compare_ether_addr
|
|
(priv->stations[i].sta.sta.addr, addr))) {
|
|
ret = i;
|
|
goto out;
|
|
}
|
|
|
|
IWL_DEBUG_INFO("can not find STA %s (total %d)\n",
|
|
print_mac(mac, addr), priv->num_stations);
|
|
out:
|
|
spin_unlock_irqrestore(&priv->sta_lock, flags);
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* iwl3945_hw_build_tx_cmd_rate - Add rate portion to TX_CMD:
|
|
*
|
|
*/
|
|
void iwl3945_hw_build_tx_cmd_rate(struct iwl3945_priv *priv,
|
|
struct iwl3945_cmd *cmd,
|
|
struct ieee80211_tx_info *info,
|
|
struct ieee80211_hdr *hdr, int sta_id, int tx_id)
|
|
{
|
|
unsigned long flags;
|
|
u16 hw_value = ieee80211_get_tx_rate(priv->hw, info)->hw_value;
|
|
u16 rate_index = min(hw_value & 0xffff, IWL_RATE_COUNT - 1);
|
|
u16 rate_mask;
|
|
int rate;
|
|
u8 rts_retry_limit;
|
|
u8 data_retry_limit;
|
|
__le32 tx_flags;
|
|
__le16 fc = hdr->frame_control;
|
|
|
|
rate = iwl3945_rates[rate_index].plcp;
|
|
tx_flags = cmd->cmd.tx.tx_flags;
|
|
|
|
/* We need to figure out how to get the sta->supp_rates while
|
|
* in this running context */
|
|
rate_mask = IWL_RATES_MASK;
|
|
|
|
spin_lock_irqsave(&priv->sta_lock, flags);
|
|
|
|
priv->stations[sta_id].current_rate.rate_n_flags = rate;
|
|
|
|
if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
|
|
(sta_id != priv->hw_setting.bcast_sta_id) &&
|
|
(sta_id != IWL_MULTICAST_ID))
|
|
priv->stations[IWL_STA_ID].current_rate.rate_n_flags = rate;
|
|
|
|
spin_unlock_irqrestore(&priv->sta_lock, flags);
|
|
|
|
if (tx_id >= IWL_CMD_QUEUE_NUM)
|
|
rts_retry_limit = 3;
|
|
else
|
|
rts_retry_limit = 7;
|
|
|
|
if (ieee80211_is_probe_resp(fc)) {
|
|
data_retry_limit = 3;
|
|
if (data_retry_limit < rts_retry_limit)
|
|
rts_retry_limit = data_retry_limit;
|
|
} else
|
|
data_retry_limit = IWL_DEFAULT_TX_RETRY;
|
|
|
|
if (priv->data_retry_limit != -1)
|
|
data_retry_limit = priv->data_retry_limit;
|
|
|
|
if (ieee80211_is_mgmt(fc)) {
|
|
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):
|
|
if (tx_flags & TX_CMD_FLG_RTS_MSK) {
|
|
tx_flags &= ~TX_CMD_FLG_RTS_MSK;
|
|
tx_flags |= TX_CMD_FLG_CTS_MSK;
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
cmd->cmd.tx.rts_retry_limit = rts_retry_limit;
|
|
cmd->cmd.tx.data_retry_limit = data_retry_limit;
|
|
cmd->cmd.tx.rate = rate;
|
|
cmd->cmd.tx.tx_flags = tx_flags;
|
|
|
|
/* OFDM */
|
|
cmd->cmd.tx.supp_rates[0] =
|
|
((rate_mask & IWL_OFDM_RATES_MASK) >> IWL_FIRST_OFDM_RATE) & 0xFF;
|
|
|
|
/* CCK */
|
|
cmd->cmd.tx.supp_rates[1] = (rate_mask & 0xF);
|
|
|
|
IWL_DEBUG_RATE("Tx sta id: %d, rate: %d (plcp), flags: 0x%4X "
|
|
"cck/ofdm mask: 0x%x/0x%x\n", sta_id,
|
|
cmd->cmd.tx.rate, le32_to_cpu(cmd->cmd.tx.tx_flags),
|
|
cmd->cmd.tx.supp_rates[1], cmd->cmd.tx.supp_rates[0]);
|
|
}
|
|
|
|
u8 iwl3945_sync_sta(struct iwl3945_priv *priv, int sta_id, u16 tx_rate, u8 flags)
|
|
{
|
|
unsigned long flags_spin;
|
|
struct iwl3945_station_entry *station;
|
|
|
|
if (sta_id == IWL_INVALID_STATION)
|
|
return IWL_INVALID_STATION;
|
|
|
|
spin_lock_irqsave(&priv->sta_lock, flags_spin);
|
|
station = &priv->stations[sta_id];
|
|
|
|
station->sta.sta.modify_mask = STA_MODIFY_TX_RATE_MSK;
|
|
station->sta.rate_n_flags = cpu_to_le16(tx_rate);
|
|
station->current_rate.rate_n_flags = tx_rate;
|
|
station->sta.mode = STA_CONTROL_MODIFY_MSK;
|
|
|
|
spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
|
|
|
|
iwl3945_send_add_station(priv, &station->sta, flags);
|
|
IWL_DEBUG_RATE("SCALE sync station %d to rate %d\n",
|
|
sta_id, tx_rate);
|
|
return sta_id;
|
|
}
|
|
|
|
static int iwl3945_nic_set_pwr_src(struct iwl3945_priv *priv, int pwr_max)
|
|
{
|
|
int rc;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
rc = iwl3945_grab_nic_access(priv);
|
|
if (rc) {
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
return rc;
|
|
}
|
|
|
|
if (!pwr_max) {
|
|
u32 val;
|
|
|
|
rc = pci_read_config_dword(priv->pci_dev,
|
|
PCI_POWER_SOURCE, &val);
|
|
if (val & PCI_CFG_PMC_PME_FROM_D3COLD_SUPPORT) {
|
|
iwl3945_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
|
|
APMG_PS_CTRL_VAL_PWR_SRC_VAUX,
|
|
~APMG_PS_CTRL_MSK_PWR_SRC);
|
|
iwl3945_release_nic_access(priv);
|
|
|
|
iwl3945_poll_bit(priv, CSR_GPIO_IN,
|
|
CSR_GPIO_IN_VAL_VAUX_PWR_SRC,
|
|
CSR_GPIO_IN_BIT_AUX_POWER, 5000);
|
|
} else
|
|
iwl3945_release_nic_access(priv);
|
|
} else {
|
|
iwl3945_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
|
|
APMG_PS_CTRL_VAL_PWR_SRC_VMAIN,
|
|
~APMG_PS_CTRL_MSK_PWR_SRC);
|
|
|
|
iwl3945_release_nic_access(priv);
|
|
iwl3945_poll_bit(priv, CSR_GPIO_IN, CSR_GPIO_IN_VAL_VMAIN_PWR_SRC,
|
|
CSR_GPIO_IN_BIT_AUX_POWER, 5000); /* uS */
|
|
}
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int iwl3945_rx_init(struct iwl3945_priv *priv, struct iwl3945_rx_queue *rxq)
|
|
{
|
|
int rc;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
rc = iwl3945_grab_nic_access(priv);
|
|
if (rc) {
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
return rc;
|
|
}
|
|
|
|
iwl3945_write_direct32(priv, FH_RCSR_RBD_BASE(0), rxq->dma_addr);
|
|
iwl3945_write_direct32(priv, FH_RCSR_RPTR_ADDR(0),
|
|
priv->hw_setting.shared_phys +
|
|
offsetof(struct iwl3945_shared, rx_read_ptr[0]));
|
|
iwl3945_write_direct32(priv, FH_RCSR_WPTR(0), 0);
|
|
iwl3945_write_direct32(priv, FH_RCSR_CONFIG(0),
|
|
ALM_FH_RCSR_RX_CONFIG_REG_VAL_DMA_CHNL_EN_ENABLE |
|
|
ALM_FH_RCSR_RX_CONFIG_REG_VAL_RDRBD_EN_ENABLE |
|
|
ALM_FH_RCSR_RX_CONFIG_REG_BIT_WR_STTS_EN |
|
|
ALM_FH_RCSR_RX_CONFIG_REG_VAL_MAX_FRAG_SIZE_128 |
|
|
(RX_QUEUE_SIZE_LOG << ALM_FH_RCSR_RX_CONFIG_REG_POS_RBDC_SIZE) |
|
|
ALM_FH_RCSR_RX_CONFIG_REG_VAL_IRQ_DEST_INT_HOST |
|
|
(1 << ALM_FH_RCSR_RX_CONFIG_REG_POS_IRQ_RBTH) |
|
|
ALM_FH_RCSR_RX_CONFIG_REG_VAL_MSG_MODE_FH);
|
|
|
|
/* fake read to flush all prev I/O */
|
|
iwl3945_read_direct32(priv, FH_RSSR_CTRL);
|
|
|
|
iwl3945_release_nic_access(priv);
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int iwl3945_tx_reset(struct iwl3945_priv *priv)
|
|
{
|
|
int rc;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
rc = iwl3945_grab_nic_access(priv);
|
|
if (rc) {
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
return rc;
|
|
}
|
|
|
|
/* bypass mode */
|
|
iwl3945_write_prph(priv, ALM_SCD_MODE_REG, 0x2);
|
|
|
|
/* RA 0 is active */
|
|
iwl3945_write_prph(priv, ALM_SCD_ARASTAT_REG, 0x01);
|
|
|
|
/* all 6 fifo are active */
|
|
iwl3945_write_prph(priv, ALM_SCD_TXFACT_REG, 0x3f);
|
|
|
|
iwl3945_write_prph(priv, ALM_SCD_SBYP_MODE_1_REG, 0x010000);
|
|
iwl3945_write_prph(priv, ALM_SCD_SBYP_MODE_2_REG, 0x030002);
|
|
iwl3945_write_prph(priv, ALM_SCD_TXF4MF_REG, 0x000004);
|
|
iwl3945_write_prph(priv, ALM_SCD_TXF5MF_REG, 0x000005);
|
|
|
|
iwl3945_write_direct32(priv, FH_TSSR_CBB_BASE,
|
|
priv->hw_setting.shared_phys);
|
|
|
|
iwl3945_write_direct32(priv, FH_TSSR_MSG_CONFIG,
|
|
ALM_FH_TSSR_TX_MSG_CONFIG_REG_VAL_SNOOP_RD_TXPD_ON |
|
|
ALM_FH_TSSR_TX_MSG_CONFIG_REG_VAL_ORDER_RD_TXPD_ON |
|
|
ALM_FH_TSSR_TX_MSG_CONFIG_REG_VAL_MAX_FRAG_SIZE_128B |
|
|
ALM_FH_TSSR_TX_MSG_CONFIG_REG_VAL_SNOOP_RD_TFD_ON |
|
|
ALM_FH_TSSR_TX_MSG_CONFIG_REG_VAL_ORDER_RD_CBB_ON |
|
|
ALM_FH_TSSR_TX_MSG_CONFIG_REG_VAL_ORDER_RSP_WAIT_TH |
|
|
ALM_FH_TSSR_TX_MSG_CONFIG_REG_VAL_RSP_WAIT_TH);
|
|
|
|
iwl3945_release_nic_access(priv);
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* iwl3945_txq_ctx_reset - Reset TX queue context
|
|
*
|
|
* Destroys all DMA structures and initialize them again
|
|
*/
|
|
static int iwl3945_txq_ctx_reset(struct iwl3945_priv *priv)
|
|
{
|
|
int rc;
|
|
int txq_id, slots_num;
|
|
|
|
iwl3945_hw_txq_ctx_free(priv);
|
|
|
|
/* Tx CMD queue */
|
|
rc = iwl3945_tx_reset(priv);
|
|
if (rc)
|
|
goto error;
|
|
|
|
/* Tx queue(s) */
|
|
for (txq_id = 0; txq_id < TFD_QUEUE_MAX; txq_id++) {
|
|
slots_num = (txq_id == IWL_CMD_QUEUE_NUM) ?
|
|
TFD_CMD_SLOTS : TFD_TX_CMD_SLOTS;
|
|
rc = iwl3945_tx_queue_init(priv, &priv->txq[txq_id], slots_num,
|
|
txq_id);
|
|
if (rc) {
|
|
IWL_ERROR("Tx %d queue init failed\n", txq_id);
|
|
goto error;
|
|
}
|
|
}
|
|
|
|
return rc;
|
|
|
|
error:
|
|
iwl3945_hw_txq_ctx_free(priv);
|
|
return rc;
|
|
}
|
|
|
|
int iwl3945_hw_nic_init(struct iwl3945_priv *priv)
|
|
{
|
|
u8 rev_id;
|
|
int rc;
|
|
unsigned long flags;
|
|
struct iwl3945_rx_queue *rxq = &priv->rxq;
|
|
|
|
iwl3945_power_init_handle(priv);
|
|
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
iwl3945_set_bit(priv, CSR_ANA_PLL_CFG, CSR39_ANA_PLL_CFG_VAL);
|
|
iwl3945_set_bit(priv, CSR_GIO_CHICKEN_BITS,
|
|
CSR_GIO_CHICKEN_BITS_REG_BIT_L1A_NO_L0S_RX);
|
|
|
|
iwl3945_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
|
|
rc = iwl3945_poll_bit(priv, CSR_GP_CNTRL,
|
|
CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
|
|
CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
|
|
if (rc < 0) {
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
IWL_DEBUG_INFO("Failed to init the card\n");
|
|
return rc;
|
|
}
|
|
|
|
rc = iwl3945_grab_nic_access(priv);
|
|
if (rc) {
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
return rc;
|
|
}
|
|
iwl3945_write_prph(priv, APMG_CLK_EN_REG,
|
|
APMG_CLK_VAL_DMA_CLK_RQT |
|
|
APMG_CLK_VAL_BSM_CLK_RQT);
|
|
udelay(20);
|
|
iwl3945_set_bits_prph(priv, APMG_PCIDEV_STT_REG,
|
|
APMG_PCIDEV_STT_VAL_L1_ACT_DIS);
|
|
iwl3945_release_nic_access(priv);
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
|
|
/* Determine HW type */
|
|
rc = pci_read_config_byte(priv->pci_dev, PCI_REVISION_ID, &rev_id);
|
|
if (rc)
|
|
return rc;
|
|
IWL_DEBUG_INFO("HW Revision ID = 0x%X\n", rev_id);
|
|
|
|
iwl3945_nic_set_pwr_src(priv, 1);
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
|
|
if (rev_id & PCI_CFG_REV_ID_BIT_RTP)
|
|
IWL_DEBUG_INFO("RTP type \n");
|
|
else if (rev_id & PCI_CFG_REV_ID_BIT_BASIC_SKU) {
|
|
IWL_DEBUG_INFO("3945 RADIO-MB type\n");
|
|
iwl3945_set_bit(priv, CSR_HW_IF_CONFIG_REG,
|
|
CSR39_HW_IF_CONFIG_REG_BIT_3945_MB);
|
|
} else {
|
|
IWL_DEBUG_INFO("3945 RADIO-MM type\n");
|
|
iwl3945_set_bit(priv, CSR_HW_IF_CONFIG_REG,
|
|
CSR39_HW_IF_CONFIG_REG_BIT_3945_MM);
|
|
}
|
|
|
|
if (EEPROM_SKU_CAP_OP_MODE_MRC == priv->eeprom.sku_cap) {
|
|
IWL_DEBUG_INFO("SKU OP mode is mrc\n");
|
|
iwl3945_set_bit(priv, CSR_HW_IF_CONFIG_REG,
|
|
CSR39_HW_IF_CONFIG_REG_BIT_SKU_MRC);
|
|
} else
|
|
IWL_DEBUG_INFO("SKU OP mode is basic\n");
|
|
|
|
if ((priv->eeprom.board_revision & 0xF0) == 0xD0) {
|
|
IWL_DEBUG_INFO("3945ABG revision is 0x%X\n",
|
|
priv->eeprom.board_revision);
|
|
iwl3945_set_bit(priv, CSR_HW_IF_CONFIG_REG,
|
|
CSR39_HW_IF_CONFIG_REG_BIT_BOARD_TYPE);
|
|
} else {
|
|
IWL_DEBUG_INFO("3945ABG revision is 0x%X\n",
|
|
priv->eeprom.board_revision);
|
|
iwl3945_clear_bit(priv, CSR_HW_IF_CONFIG_REG,
|
|
CSR39_HW_IF_CONFIG_REG_BIT_BOARD_TYPE);
|
|
}
|
|
|
|
if (priv->eeprom.almgor_m_version <= 1) {
|
|
iwl3945_set_bit(priv, CSR_HW_IF_CONFIG_REG,
|
|
CSR39_HW_IF_CONFIG_REG_BITS_SILICON_TYPE_A);
|
|
IWL_DEBUG_INFO("Card M type A version is 0x%X\n",
|
|
priv->eeprom.almgor_m_version);
|
|
} else {
|
|
IWL_DEBUG_INFO("Card M type B version is 0x%X\n",
|
|
priv->eeprom.almgor_m_version);
|
|
iwl3945_set_bit(priv, CSR_HW_IF_CONFIG_REG,
|
|
CSR39_HW_IF_CONFIG_REG_BITS_SILICON_TYPE_B);
|
|
}
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
|
|
if (priv->eeprom.sku_cap & EEPROM_SKU_CAP_SW_RF_KILL_ENABLE)
|
|
IWL_DEBUG_RF_KILL("SW RF KILL supported in EEPROM.\n");
|
|
|
|
if (priv->eeprom.sku_cap & EEPROM_SKU_CAP_HW_RF_KILL_ENABLE)
|
|
IWL_DEBUG_RF_KILL("HW RF KILL supported in EEPROM.\n");
|
|
|
|
/* Allocate the RX queue, or reset if it is already allocated */
|
|
if (!rxq->bd) {
|
|
rc = iwl3945_rx_queue_alloc(priv);
|
|
if (rc) {
|
|
IWL_ERROR("Unable to initialize Rx queue\n");
|
|
return -ENOMEM;
|
|
}
|
|
} else
|
|
iwl3945_rx_queue_reset(priv, rxq);
|
|
|
|
iwl3945_rx_replenish(priv);
|
|
|
|
iwl3945_rx_init(priv, rxq);
|
|
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
|
|
/* Look at using this instead:
|
|
rxq->need_update = 1;
|
|
iwl3945_rx_queue_update_write_ptr(priv, rxq);
|
|
*/
|
|
|
|
rc = iwl3945_grab_nic_access(priv);
|
|
if (rc) {
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
return rc;
|
|
}
|
|
iwl3945_write_direct32(priv, FH_RCSR_WPTR(0), rxq->write & ~7);
|
|
iwl3945_release_nic_access(priv);
|
|
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
|
|
rc = iwl3945_txq_ctx_reset(priv);
|
|
if (rc)
|
|
return rc;
|
|
|
|
set_bit(STATUS_INIT, &priv->status);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* iwl3945_hw_txq_ctx_free - Free TXQ Context
|
|
*
|
|
* Destroy all TX DMA queues and structures
|
|
*/
|
|
void iwl3945_hw_txq_ctx_free(struct iwl3945_priv *priv)
|
|
{
|
|
int txq_id;
|
|
|
|
/* Tx queues */
|
|
for (txq_id = 0; txq_id < TFD_QUEUE_MAX; txq_id++)
|
|
iwl3945_tx_queue_free(priv, &priv->txq[txq_id]);
|
|
}
|
|
|
|
void iwl3945_hw_txq_ctx_stop(struct iwl3945_priv *priv)
|
|
{
|
|
int queue;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
if (iwl3945_grab_nic_access(priv)) {
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
iwl3945_hw_txq_ctx_free(priv);
|
|
return;
|
|
}
|
|
|
|
/* stop SCD */
|
|
iwl3945_write_prph(priv, ALM_SCD_MODE_REG, 0);
|
|
|
|
/* reset TFD queues */
|
|
for (queue = TFD_QUEUE_MIN; queue < TFD_QUEUE_MAX; queue++) {
|
|
iwl3945_write_direct32(priv, FH_TCSR_CONFIG(queue), 0x0);
|
|
iwl3945_poll_direct_bit(priv, FH_TSSR_TX_STATUS,
|
|
ALM_FH_TSSR_TX_STATUS_REG_MSK_CHNL_IDLE(queue),
|
|
1000);
|
|
}
|
|
|
|
iwl3945_release_nic_access(priv);
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
|
|
iwl3945_hw_txq_ctx_free(priv);
|
|
}
|
|
|
|
int iwl3945_hw_nic_stop_master(struct iwl3945_priv *priv)
|
|
{
|
|
int rc = 0;
|
|
u32 reg_val;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
|
|
/* set stop master bit */
|
|
iwl3945_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_STOP_MASTER);
|
|
|
|
reg_val = iwl3945_read32(priv, CSR_GP_CNTRL);
|
|
|
|
if (CSR_GP_CNTRL_REG_FLAG_MAC_POWER_SAVE ==
|
|
(reg_val & CSR_GP_CNTRL_REG_MSK_POWER_SAVE_TYPE))
|
|
IWL_DEBUG_INFO("Card in power save, master is already "
|
|
"stopped\n");
|
|
else {
|
|
rc = iwl3945_poll_bit(priv, CSR_RESET,
|
|
CSR_RESET_REG_FLAG_MASTER_DISABLED,
|
|
CSR_RESET_REG_FLAG_MASTER_DISABLED, 100);
|
|
if (rc < 0) {
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
return rc;
|
|
}
|
|
}
|
|
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
IWL_DEBUG_INFO("stop master\n");
|
|
|
|
return rc;
|
|
}
|
|
|
|
int iwl3945_hw_nic_reset(struct iwl3945_priv *priv)
|
|
{
|
|
int rc;
|
|
unsigned long flags;
|
|
|
|
iwl3945_hw_nic_stop_master(priv);
|
|
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
|
|
iwl3945_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
|
|
|
|
rc = iwl3945_poll_bit(priv, CSR_GP_CNTRL,
|
|
CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
|
|
CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
|
|
|
|
rc = iwl3945_grab_nic_access(priv);
|
|
if (!rc) {
|
|
iwl3945_write_prph(priv, APMG_CLK_CTRL_REG,
|
|
APMG_CLK_VAL_BSM_CLK_RQT);
|
|
|
|
udelay(10);
|
|
|
|
iwl3945_set_bit(priv, CSR_GP_CNTRL,
|
|
CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
|
|
|
|
iwl3945_write_prph(priv, APMG_RTC_INT_MSK_REG, 0x0);
|
|
iwl3945_write_prph(priv, APMG_RTC_INT_STT_REG,
|
|
0xFFFFFFFF);
|
|
|
|
/* enable DMA */
|
|
iwl3945_write_prph(priv, APMG_CLK_EN_REG,
|
|
APMG_CLK_VAL_DMA_CLK_RQT |
|
|
APMG_CLK_VAL_BSM_CLK_RQT);
|
|
udelay(10);
|
|
|
|
iwl3945_set_bits_prph(priv, APMG_PS_CTRL_REG,
|
|
APMG_PS_CTRL_VAL_RESET_REQ);
|
|
udelay(5);
|
|
iwl3945_clear_bits_prph(priv, APMG_PS_CTRL_REG,
|
|
APMG_PS_CTRL_VAL_RESET_REQ);
|
|
iwl3945_release_nic_access(priv);
|
|
}
|
|
|
|
/* Clear the 'host command active' bit... */
|
|
clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
|
|
|
|
wake_up_interruptible(&priv->wait_command_queue);
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
|
|
return rc;
|
|
}
|
|
|
|
/**
|
|
* iwl3945_hw_reg_adjust_power_by_temp
|
|
* return index delta into power gain settings table
|
|
*/
|
|
static int iwl3945_hw_reg_adjust_power_by_temp(int new_reading, int old_reading)
|
|
{
|
|
return (new_reading - old_reading) * (-11) / 100;
|
|
}
|
|
|
|
/**
|
|
* iwl3945_hw_reg_temp_out_of_range - Keep temperature in sane range
|
|
*/
|
|
static inline int iwl3945_hw_reg_temp_out_of_range(int temperature)
|
|
{
|
|
return ((temperature < -260) || (temperature > 25)) ? 1 : 0;
|
|
}
|
|
|
|
int iwl3945_hw_get_temperature(struct iwl3945_priv *priv)
|
|
{
|
|
return iwl3945_read32(priv, CSR_UCODE_DRV_GP2);
|
|
}
|
|
|
|
/**
|
|
* iwl3945_hw_reg_txpower_get_temperature
|
|
* get the current temperature by reading from NIC
|
|
*/
|
|
static int iwl3945_hw_reg_txpower_get_temperature(struct iwl3945_priv *priv)
|
|
{
|
|
int temperature;
|
|
|
|
temperature = iwl3945_hw_get_temperature(priv);
|
|
|
|
/* driver's okay range is -260 to +25.
|
|
* human readable okay range is 0 to +285 */
|
|
IWL_DEBUG_INFO("Temperature: %d\n", temperature + IWL_TEMP_CONVERT);
|
|
|
|
/* handle insane temp reading */
|
|
if (iwl3945_hw_reg_temp_out_of_range(temperature)) {
|
|
IWL_ERROR("Error bad temperature value %d\n", temperature);
|
|
|
|
/* if really really hot(?),
|
|
* substitute the 3rd band/group's temp measured at factory */
|
|
if (priv->last_temperature > 100)
|
|
temperature = priv->eeprom.groups[2].temperature;
|
|
else /* else use most recent "sane" value from driver */
|
|
temperature = priv->last_temperature;
|
|
}
|
|
|
|
return temperature; /* raw, not "human readable" */
|
|
}
|
|
|
|
/* Adjust Txpower only if temperature variance is greater than threshold.
|
|
*
|
|
* Both are lower than older versions' 9 degrees */
|
|
#define IWL_TEMPERATURE_LIMIT_TIMER 6
|
|
|
|
/**
|
|
* is_temp_calib_needed - determines if new calibration is needed
|
|
*
|
|
* records new temperature in tx_mgr->temperature.
|
|
* replaces tx_mgr->last_temperature *only* if calib needed
|
|
* (assumes caller will actually do the calibration!). */
|
|
static int is_temp_calib_needed(struct iwl3945_priv *priv)
|
|
{
|
|
int temp_diff;
|
|
|
|
priv->temperature = iwl3945_hw_reg_txpower_get_temperature(priv);
|
|
temp_diff = priv->temperature - priv->last_temperature;
|
|
|
|
/* get absolute value */
|
|
if (temp_diff < 0) {
|
|
IWL_DEBUG_POWER("Getting cooler, delta %d,\n", temp_diff);
|
|
temp_diff = -temp_diff;
|
|
} else if (temp_diff == 0)
|
|
IWL_DEBUG_POWER("Same temp,\n");
|
|
else
|
|
IWL_DEBUG_POWER("Getting warmer, delta %d,\n", temp_diff);
|
|
|
|
/* if we don't need calibration, *don't* update last_temperature */
|
|
if (temp_diff < IWL_TEMPERATURE_LIMIT_TIMER) {
|
|
IWL_DEBUG_POWER("Timed thermal calib not needed\n");
|
|
return 0;
|
|
}
|
|
|
|
IWL_DEBUG_POWER("Timed thermal calib needed\n");
|
|
|
|
/* assume that caller will actually do calib ...
|
|
* update the "last temperature" value */
|
|
priv->last_temperature = priv->temperature;
|
|
return 1;
|
|
}
|
|
|
|
#define IWL_MAX_GAIN_ENTRIES 78
|
|
#define IWL_CCK_FROM_OFDM_POWER_DIFF -5
|
|
#define IWL_CCK_FROM_OFDM_INDEX_DIFF (10)
|
|
|
|
/* radio and DSP power table, each step is 1/2 dB.
|
|
* 1st number is for RF analog gain, 2nd number is for DSP pre-DAC gain. */
|
|
static struct iwl3945_tx_power power_gain_table[2][IWL_MAX_GAIN_ENTRIES] = {
|
|
{
|
|
{251, 127}, /* 2.4 GHz, highest power */
|
|
{251, 127},
|
|
{251, 127},
|
|
{251, 127},
|
|
{251, 125},
|
|
{251, 110},
|
|
{251, 105},
|
|
{251, 98},
|
|
{187, 125},
|
|
{187, 115},
|
|
{187, 108},
|
|
{187, 99},
|
|
{243, 119},
|
|
{243, 111},
|
|
{243, 105},
|
|
{243, 97},
|
|
{243, 92},
|
|
{211, 106},
|
|
{211, 100},
|
|
{179, 120},
|
|
{179, 113},
|
|
{179, 107},
|
|
{147, 125},
|
|
{147, 119},
|
|
{147, 112},
|
|
{147, 106},
|
|
{147, 101},
|
|
{147, 97},
|
|
{147, 91},
|
|
{115, 107},
|
|
{235, 121},
|
|
{235, 115},
|
|
{235, 109},
|
|
{203, 127},
|
|
{203, 121},
|
|
{203, 115},
|
|
{203, 108},
|
|
{203, 102},
|
|
{203, 96},
|
|
{203, 92},
|
|
{171, 110},
|
|
{171, 104},
|
|
{171, 98},
|
|
{139, 116},
|
|
{227, 125},
|
|
{227, 119},
|
|
{227, 113},
|
|
{227, 107},
|
|
{227, 101},
|
|
{227, 96},
|
|
{195, 113},
|
|
{195, 106},
|
|
{195, 102},
|
|
{195, 95},
|
|
{163, 113},
|
|
{163, 106},
|
|
{163, 102},
|
|
{163, 95},
|
|
{131, 113},
|
|
{131, 106},
|
|
{131, 102},
|
|
{131, 95},
|
|
{99, 113},
|
|
{99, 106},
|
|
{99, 102},
|
|
{99, 95},
|
|
{67, 113},
|
|
{67, 106},
|
|
{67, 102},
|
|
{67, 95},
|
|
{35, 113},
|
|
{35, 106},
|
|
{35, 102},
|
|
{35, 95},
|
|
{3, 113},
|
|
{3, 106},
|
|
{3, 102},
|
|
{3, 95} }, /* 2.4 GHz, lowest power */
|
|
{
|
|
{251, 127}, /* 5.x GHz, highest power */
|
|
{251, 120},
|
|
{251, 114},
|
|
{219, 119},
|
|
{219, 101},
|
|
{187, 113},
|
|
{187, 102},
|
|
{155, 114},
|
|
{155, 103},
|
|
{123, 117},
|
|
{123, 107},
|
|
{123, 99},
|
|
{123, 92},
|
|
{91, 108},
|
|
{59, 125},
|
|
{59, 118},
|
|
{59, 109},
|
|
{59, 102},
|
|
{59, 96},
|
|
{59, 90},
|
|
{27, 104},
|
|
{27, 98},
|
|
{27, 92},
|
|
{115, 118},
|
|
{115, 111},
|
|
{115, 104},
|
|
{83, 126},
|
|
{83, 121},
|
|
{83, 113},
|
|
{83, 105},
|
|
{83, 99},
|
|
{51, 118},
|
|
{51, 111},
|
|
{51, 104},
|
|
{51, 98},
|
|
{19, 116},
|
|
{19, 109},
|
|
{19, 102},
|
|
{19, 98},
|
|
{19, 93},
|
|
{171, 113},
|
|
{171, 107},
|
|
{171, 99},
|
|
{139, 120},
|
|
{139, 113},
|
|
{139, 107},
|
|
{139, 99},
|
|
{107, 120},
|
|
{107, 113},
|
|
{107, 107},
|
|
{107, 99},
|
|
{75, 120},
|
|
{75, 113},
|
|
{75, 107},
|
|
{75, 99},
|
|
{43, 120},
|
|
{43, 113},
|
|
{43, 107},
|
|
{43, 99},
|
|
{11, 120},
|
|
{11, 113},
|
|
{11, 107},
|
|
{11, 99},
|
|
{131, 107},
|
|
{131, 99},
|
|
{99, 120},
|
|
{99, 113},
|
|
{99, 107},
|
|
{99, 99},
|
|
{67, 120},
|
|
{67, 113},
|
|
{67, 107},
|
|
{67, 99},
|
|
{35, 120},
|
|
{35, 113},
|
|
{35, 107},
|
|
{35, 99},
|
|
{3, 120} } /* 5.x GHz, lowest power */
|
|
};
|
|
|
|
static inline u8 iwl3945_hw_reg_fix_power_index(int index)
|
|
{
|
|
if (index < 0)
|
|
return 0;
|
|
if (index >= IWL_MAX_GAIN_ENTRIES)
|
|
return IWL_MAX_GAIN_ENTRIES - 1;
|
|
return (u8) index;
|
|
}
|
|
|
|
/* Kick off thermal recalibration check every 60 seconds */
|
|
#define REG_RECALIB_PERIOD (60)
|
|
|
|
/**
|
|
* iwl3945_hw_reg_set_scan_power - Set Tx power for scan probe requests
|
|
*
|
|
* Set (in our channel info database) the direct scan Tx power for 1 Mbit (CCK)
|
|
* or 6 Mbit (OFDM) rates.
|
|
*/
|
|
static void iwl3945_hw_reg_set_scan_power(struct iwl3945_priv *priv, u32 scan_tbl_index,
|
|
s32 rate_index, const s8 *clip_pwrs,
|
|
struct iwl3945_channel_info *ch_info,
|
|
int band_index)
|
|
{
|
|
struct iwl3945_scan_power_info *scan_power_info;
|
|
s8 power;
|
|
u8 power_index;
|
|
|
|
scan_power_info = &ch_info->scan_pwr_info[scan_tbl_index];
|
|
|
|
/* use this channel group's 6Mbit clipping/saturation pwr,
|
|
* but cap at regulatory scan power restriction (set during init
|
|
* based on eeprom channel data) for this channel. */
|
|
power = min(ch_info->scan_power, clip_pwrs[IWL_RATE_6M_INDEX_TABLE]);
|
|
|
|
/* further limit to user's max power preference.
|
|
* FIXME: Other spectrum management power limitations do not
|
|
* seem to apply?? */
|
|
power = min(power, priv->user_txpower_limit);
|
|
scan_power_info->requested_power = power;
|
|
|
|
/* find difference between new scan *power* and current "normal"
|
|
* Tx *power* for 6Mb. Use this difference (x2) to adjust the
|
|
* current "normal" temperature-compensated Tx power *index* for
|
|
* this rate (1Mb or 6Mb) to yield new temp-compensated scan power
|
|
* *index*. */
|
|
power_index = ch_info->power_info[rate_index].power_table_index
|
|
- (power - ch_info->power_info
|
|
[IWL_RATE_6M_INDEX_TABLE].requested_power) * 2;
|
|
|
|
/* store reference index that we use when adjusting *all* scan
|
|
* powers. So we can accommodate user (all channel) or spectrum
|
|
* management (single channel) power changes "between" temperature
|
|
* feedback compensation procedures.
|
|
* don't force fit this reference index into gain table; it may be a
|
|
* negative number. This will help avoid errors when we're at
|
|
* the lower bounds (highest gains, for warmest temperatures)
|
|
* of the table. */
|
|
|
|
/* don't exceed table bounds for "real" setting */
|
|
power_index = iwl3945_hw_reg_fix_power_index(power_index);
|
|
|
|
scan_power_info->power_table_index = power_index;
|
|
scan_power_info->tpc.tx_gain =
|
|
power_gain_table[band_index][power_index].tx_gain;
|
|
scan_power_info->tpc.dsp_atten =
|
|
power_gain_table[band_index][power_index].dsp_atten;
|
|
}
|
|
|
|
/**
|
|
* iwl3945_hw_reg_send_txpower - fill in Tx Power command with gain settings
|
|
*
|
|
* Configures power settings for all rates for the current channel,
|
|
* using values from channel info struct, and send to NIC
|
|
*/
|
|
int iwl3945_hw_reg_send_txpower(struct iwl3945_priv *priv)
|
|
{
|
|
int rate_idx, i;
|
|
const struct iwl3945_channel_info *ch_info = NULL;
|
|
struct iwl3945_txpowertable_cmd txpower = {
|
|
.channel = priv->active_rxon.channel,
|
|
};
|
|
|
|
txpower.band = (priv->band == IEEE80211_BAND_5GHZ) ? 0 : 1;
|
|
ch_info = iwl3945_get_channel_info(priv,
|
|
priv->band,
|
|
le16_to_cpu(priv->active_rxon.channel));
|
|
if (!ch_info) {
|
|
IWL_ERROR
|
|
("Failed to get channel info for channel %d [%d]\n",
|
|
le16_to_cpu(priv->active_rxon.channel), priv->band);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (!is_channel_valid(ch_info)) {
|
|
IWL_DEBUG_POWER("Not calling TX_PWR_TABLE_CMD on "
|
|
"non-Tx channel.\n");
|
|
return 0;
|
|
}
|
|
|
|
/* fill cmd with power settings for all rates for current channel */
|
|
/* Fill OFDM rate */
|
|
for (rate_idx = IWL_FIRST_OFDM_RATE, i = 0;
|
|
rate_idx <= IWL_LAST_OFDM_RATE; rate_idx++, i++) {
|
|
|
|
txpower.power[i].tpc = ch_info->power_info[i].tpc;
|
|
txpower.power[i].rate = iwl3945_rates[rate_idx].plcp;
|
|
|
|
IWL_DEBUG_POWER("ch %d:%d rf %d dsp %3d rate code 0x%02x\n",
|
|
le16_to_cpu(txpower.channel),
|
|
txpower.band,
|
|
txpower.power[i].tpc.tx_gain,
|
|
txpower.power[i].tpc.dsp_atten,
|
|
txpower.power[i].rate);
|
|
}
|
|
/* Fill CCK rates */
|
|
for (rate_idx = IWL_FIRST_CCK_RATE;
|
|
rate_idx <= IWL_LAST_CCK_RATE; rate_idx++, i++) {
|
|
txpower.power[i].tpc = ch_info->power_info[i].tpc;
|
|
txpower.power[i].rate = iwl3945_rates[rate_idx].plcp;
|
|
|
|
IWL_DEBUG_POWER("ch %d:%d rf %d dsp %3d rate code 0x%02x\n",
|
|
le16_to_cpu(txpower.channel),
|
|
txpower.band,
|
|
txpower.power[i].tpc.tx_gain,
|
|
txpower.power[i].tpc.dsp_atten,
|
|
txpower.power[i].rate);
|
|
}
|
|
|
|
return iwl3945_send_cmd_pdu(priv, REPLY_TX_PWR_TABLE_CMD,
|
|
sizeof(struct iwl3945_txpowertable_cmd), &txpower);
|
|
|
|
}
|
|
|
|
/**
|
|
* iwl3945_hw_reg_set_new_power - Configures power tables at new levels
|
|
* @ch_info: Channel to update. Uses power_info.requested_power.
|
|
*
|
|
* Replace requested_power and base_power_index ch_info fields for
|
|
* one channel.
|
|
*
|
|
* Called if user or spectrum management changes power preferences.
|
|
* Takes into account h/w and modulation limitations (clip power).
|
|
*
|
|
* This does *not* send anything to NIC, just sets up ch_info for one channel.
|
|
*
|
|
* NOTE: reg_compensate_for_temperature_dif() *must* be run after this to
|
|
* properly fill out the scan powers, and actual h/w gain settings,
|
|
* and send changes to NIC
|
|
*/
|
|
static int iwl3945_hw_reg_set_new_power(struct iwl3945_priv *priv,
|
|
struct iwl3945_channel_info *ch_info)
|
|
{
|
|
struct iwl3945_channel_power_info *power_info;
|
|
int power_changed = 0;
|
|
int i;
|
|
const s8 *clip_pwrs;
|
|
int power;
|
|
|
|
/* Get this chnlgrp's rate-to-max/clip-powers table */
|
|
clip_pwrs = priv->clip_groups[ch_info->group_index].clip_powers;
|
|
|
|
/* Get this channel's rate-to-current-power settings table */
|
|
power_info = ch_info->power_info;
|
|
|
|
/* update OFDM Txpower settings */
|
|
for (i = IWL_RATE_6M_INDEX_TABLE; i <= IWL_RATE_54M_INDEX_TABLE;
|
|
i++, ++power_info) {
|
|
int delta_idx;
|
|
|
|
/* limit new power to be no more than h/w capability */
|
|
power = min(ch_info->curr_txpow, clip_pwrs[i]);
|
|
if (power == power_info->requested_power)
|
|
continue;
|
|
|
|
/* find difference between old and new requested powers,
|
|
* update base (non-temp-compensated) power index */
|
|
delta_idx = (power - power_info->requested_power) * 2;
|
|
power_info->base_power_index -= delta_idx;
|
|
|
|
/* save new requested power value */
|
|
power_info->requested_power = power;
|
|
|
|
power_changed = 1;
|
|
}
|
|
|
|
/* update CCK Txpower settings, based on OFDM 12M setting ...
|
|
* ... all CCK power settings for a given channel are the *same*. */
|
|
if (power_changed) {
|
|
power =
|
|
ch_info->power_info[IWL_RATE_12M_INDEX_TABLE].
|
|
requested_power + IWL_CCK_FROM_OFDM_POWER_DIFF;
|
|
|
|
/* do all CCK rates' iwl3945_channel_power_info structures */
|
|
for (i = IWL_RATE_1M_INDEX_TABLE; i <= IWL_RATE_11M_INDEX_TABLE; i++) {
|
|
power_info->requested_power = power;
|
|
power_info->base_power_index =
|
|
ch_info->power_info[IWL_RATE_12M_INDEX_TABLE].
|
|
base_power_index + IWL_CCK_FROM_OFDM_INDEX_DIFF;
|
|
++power_info;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* iwl3945_hw_reg_get_ch_txpower_limit - returns new power limit for channel
|
|
*
|
|
* NOTE: Returned power limit may be less (but not more) than requested,
|
|
* based strictly on regulatory (eeprom and spectrum mgt) limitations
|
|
* (no consideration for h/w clipping limitations).
|
|
*/
|
|
static int iwl3945_hw_reg_get_ch_txpower_limit(struct iwl3945_channel_info *ch_info)
|
|
{
|
|
s8 max_power;
|
|
|
|
#if 0
|
|
/* if we're using TGd limits, use lower of TGd or EEPROM */
|
|
if (ch_info->tgd_data.max_power != 0)
|
|
max_power = min(ch_info->tgd_data.max_power,
|
|
ch_info->eeprom.max_power_avg);
|
|
|
|
/* else just use EEPROM limits */
|
|
else
|
|
#endif
|
|
max_power = ch_info->eeprom.max_power_avg;
|
|
|
|
return min(max_power, ch_info->max_power_avg);
|
|
}
|
|
|
|
/**
|
|
* iwl3945_hw_reg_comp_txpower_temp - Compensate for temperature
|
|
*
|
|
* Compensate txpower settings of *all* channels for temperature.
|
|
* This only accounts for the difference between current temperature
|
|
* and the factory calibration temperatures, and bases the new settings
|
|
* on the channel's base_power_index.
|
|
*
|
|
* If RxOn is "associated", this sends the new Txpower to NIC!
|
|
*/
|
|
static int iwl3945_hw_reg_comp_txpower_temp(struct iwl3945_priv *priv)
|
|
{
|
|
struct iwl3945_channel_info *ch_info = NULL;
|
|
int delta_index;
|
|
const s8 *clip_pwrs; /* array of h/w max power levels for each rate */
|
|
u8 a_band;
|
|
u8 rate_index;
|
|
u8 scan_tbl_index;
|
|
u8 i;
|
|
int ref_temp;
|
|
int temperature = priv->temperature;
|
|
|
|
/* set up new Tx power info for each and every channel, 2.4 and 5.x */
|
|
for (i = 0; i < priv->channel_count; i++) {
|
|
ch_info = &priv->channel_info[i];
|
|
a_band = is_channel_a_band(ch_info);
|
|
|
|
/* Get this chnlgrp's factory calibration temperature */
|
|
ref_temp = (s16)priv->eeprom.groups[ch_info->group_index].
|
|
temperature;
|
|
|
|
/* get power index adjustment based on curr and factory
|
|
* temps */
|
|
delta_index = iwl3945_hw_reg_adjust_power_by_temp(temperature,
|
|
ref_temp);
|
|
|
|
/* set tx power value for all rates, OFDM and CCK */
|
|
for (rate_index = 0; rate_index < IWL_RATE_COUNT;
|
|
rate_index++) {
|
|
int power_idx =
|
|
ch_info->power_info[rate_index].base_power_index;
|
|
|
|
/* temperature compensate */
|
|
power_idx += delta_index;
|
|
|
|
/* stay within table range */
|
|
power_idx = iwl3945_hw_reg_fix_power_index(power_idx);
|
|
ch_info->power_info[rate_index].
|
|
power_table_index = (u8) power_idx;
|
|
ch_info->power_info[rate_index].tpc =
|
|
power_gain_table[a_band][power_idx];
|
|
}
|
|
|
|
/* Get this chnlgrp's rate-to-max/clip-powers table */
|
|
clip_pwrs = priv->clip_groups[ch_info->group_index].clip_powers;
|
|
|
|
/* set scan tx power, 1Mbit for CCK, 6Mbit for OFDM */
|
|
for (scan_tbl_index = 0;
|
|
scan_tbl_index < IWL_NUM_SCAN_RATES; scan_tbl_index++) {
|
|
s32 actual_index = (scan_tbl_index == 0) ?
|
|
IWL_RATE_1M_INDEX_TABLE : IWL_RATE_6M_INDEX_TABLE;
|
|
iwl3945_hw_reg_set_scan_power(priv, scan_tbl_index,
|
|
actual_index, clip_pwrs,
|
|
ch_info, a_band);
|
|
}
|
|
}
|
|
|
|
/* send Txpower command for current channel to ucode */
|
|
return iwl3945_hw_reg_send_txpower(priv);
|
|
}
|
|
|
|
int iwl3945_hw_reg_set_txpower(struct iwl3945_priv *priv, s8 power)
|
|
{
|
|
struct iwl3945_channel_info *ch_info;
|
|
s8 max_power;
|
|
u8 a_band;
|
|
u8 i;
|
|
|
|
if (priv->user_txpower_limit == power) {
|
|
IWL_DEBUG_POWER("Requested Tx power same as current "
|
|
"limit: %ddBm.\n", power);
|
|
return 0;
|
|
}
|
|
|
|
IWL_DEBUG_POWER("Setting upper limit clamp to %ddBm.\n", power);
|
|
priv->user_txpower_limit = power;
|
|
|
|
/* set up new Tx powers for each and every channel, 2.4 and 5.x */
|
|
|
|
for (i = 0; i < priv->channel_count; i++) {
|
|
ch_info = &priv->channel_info[i];
|
|
a_band = is_channel_a_band(ch_info);
|
|
|
|
/* find minimum power of all user and regulatory constraints
|
|
* (does not consider h/w clipping limitations) */
|
|
max_power = iwl3945_hw_reg_get_ch_txpower_limit(ch_info);
|
|
max_power = min(power, max_power);
|
|
if (max_power != ch_info->curr_txpow) {
|
|
ch_info->curr_txpow = max_power;
|
|
|
|
/* this considers the h/w clipping limitations */
|
|
iwl3945_hw_reg_set_new_power(priv, ch_info);
|
|
}
|
|
}
|
|
|
|
/* update txpower settings for all channels,
|
|
* send to NIC if associated. */
|
|
is_temp_calib_needed(priv);
|
|
iwl3945_hw_reg_comp_txpower_temp(priv);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* will add 3945 channel switch cmd handling later */
|
|
int iwl3945_hw_channel_switch(struct iwl3945_priv *priv, u16 channel)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* iwl3945_reg_txpower_periodic - called when time to check our temperature.
|
|
*
|
|
* -- reset periodic timer
|
|
* -- see if temp has changed enough to warrant re-calibration ... if so:
|
|
* -- correct coeffs for temp (can reset temp timer)
|
|
* -- save this temp as "last",
|
|
* -- send new set of gain settings to NIC
|
|
* NOTE: This should continue working, even when we're not associated,
|
|
* so we can keep our internal table of scan powers current. */
|
|
void iwl3945_reg_txpower_periodic(struct iwl3945_priv *priv)
|
|
{
|
|
/* This will kick in the "brute force"
|
|
* iwl3945_hw_reg_comp_txpower_temp() below */
|
|
if (!is_temp_calib_needed(priv))
|
|
goto reschedule;
|
|
|
|
/* Set up a new set of temp-adjusted TxPowers, send to NIC.
|
|
* This is based *only* on current temperature,
|
|
* ignoring any previous power measurements */
|
|
iwl3945_hw_reg_comp_txpower_temp(priv);
|
|
|
|
reschedule:
|
|
queue_delayed_work(priv->workqueue,
|
|
&priv->thermal_periodic, REG_RECALIB_PERIOD * HZ);
|
|
}
|
|
|
|
static void iwl3945_bg_reg_txpower_periodic(struct work_struct *work)
|
|
{
|
|
struct iwl3945_priv *priv = container_of(work, struct iwl3945_priv,
|
|
thermal_periodic.work);
|
|
|
|
if (test_bit(STATUS_EXIT_PENDING, &priv->status))
|
|
return;
|
|
|
|
mutex_lock(&priv->mutex);
|
|
iwl3945_reg_txpower_periodic(priv);
|
|
mutex_unlock(&priv->mutex);
|
|
}
|
|
|
|
/**
|
|
* iwl3945_hw_reg_get_ch_grp_index - find the channel-group index (0-4)
|
|
* for the channel.
|
|
*
|
|
* This function is used when initializing channel-info structs.
|
|
*
|
|
* NOTE: These channel groups do *NOT* match the bands above!
|
|
* These channel groups are based on factory-tested channels;
|
|
* on A-band, EEPROM's "group frequency" entries represent the top
|
|
* channel in each group 1-4. Group 5 All B/G channels are in group 0.
|
|
*/
|
|
static u16 iwl3945_hw_reg_get_ch_grp_index(struct iwl3945_priv *priv,
|
|
const struct iwl3945_channel_info *ch_info)
|
|
{
|
|
struct iwl3945_eeprom_txpower_group *ch_grp = &priv->eeprom.groups[0];
|
|
u8 group;
|
|
u16 group_index = 0; /* based on factory calib frequencies */
|
|
u8 grp_channel;
|
|
|
|
/* Find the group index for the channel ... don't use index 1(?) */
|
|
if (is_channel_a_band(ch_info)) {
|
|
for (group = 1; group < 5; group++) {
|
|
grp_channel = ch_grp[group].group_channel;
|
|
if (ch_info->channel <= grp_channel) {
|
|
group_index = group;
|
|
break;
|
|
}
|
|
}
|
|
/* group 4 has a few channels *above* its factory cal freq */
|
|
if (group == 5)
|
|
group_index = 4;
|
|
} else
|
|
group_index = 0; /* 2.4 GHz, group 0 */
|
|
|
|
IWL_DEBUG_POWER("Chnl %d mapped to grp %d\n", ch_info->channel,
|
|
group_index);
|
|
return group_index;
|
|
}
|
|
|
|
/**
|
|
* iwl3945_hw_reg_get_matched_power_index - Interpolate to get nominal index
|
|
*
|
|
* Interpolate to get nominal (i.e. at factory calibration temperature) index
|
|
* into radio/DSP gain settings table for requested power.
|
|
*/
|
|
static int iwl3945_hw_reg_get_matched_power_index(struct iwl3945_priv *priv,
|
|
s8 requested_power,
|
|
s32 setting_index, s32 *new_index)
|
|
{
|
|
const struct iwl3945_eeprom_txpower_group *chnl_grp = NULL;
|
|
s32 index0, index1;
|
|
s32 power = 2 * requested_power;
|
|
s32 i;
|
|
const struct iwl3945_eeprom_txpower_sample *samples;
|
|
s32 gains0, gains1;
|
|
s32 res;
|
|
s32 denominator;
|
|
|
|
chnl_grp = &priv->eeprom.groups[setting_index];
|
|
samples = chnl_grp->samples;
|
|
for (i = 0; i < 5; i++) {
|
|
if (power == samples[i].power) {
|
|
*new_index = samples[i].gain_index;
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
if (power > samples[1].power) {
|
|
index0 = 0;
|
|
index1 = 1;
|
|
} else if (power > samples[2].power) {
|
|
index0 = 1;
|
|
index1 = 2;
|
|
} else if (power > samples[3].power) {
|
|
index0 = 2;
|
|
index1 = 3;
|
|
} else {
|
|
index0 = 3;
|
|
index1 = 4;
|
|
}
|
|
|
|
denominator = (s32) samples[index1].power - (s32) samples[index0].power;
|
|
if (denominator == 0)
|
|
return -EINVAL;
|
|
gains0 = (s32) samples[index0].gain_index * (1 << 19);
|
|
gains1 = (s32) samples[index1].gain_index * (1 << 19);
|
|
res = gains0 + (gains1 - gains0) *
|
|
((s32) power - (s32) samples[index0].power) / denominator +
|
|
(1 << 18);
|
|
*new_index = res >> 19;
|
|
return 0;
|
|
}
|
|
|
|
static void iwl3945_hw_reg_init_channel_groups(struct iwl3945_priv *priv)
|
|
{
|
|
u32 i;
|
|
s32 rate_index;
|
|
const struct iwl3945_eeprom_txpower_group *group;
|
|
|
|
IWL_DEBUG_POWER("Initializing factory calib info from EEPROM\n");
|
|
|
|
for (i = 0; i < IWL_NUM_TX_CALIB_GROUPS; i++) {
|
|
s8 *clip_pwrs; /* table of power levels for each rate */
|
|
s8 satur_pwr; /* saturation power for each chnl group */
|
|
group = &priv->eeprom.groups[i];
|
|
|
|
/* sanity check on factory saturation power value */
|
|
if (group->saturation_power < 40) {
|
|
IWL_WARNING("Error: saturation power is %d, "
|
|
"less than minimum expected 40\n",
|
|
group->saturation_power);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Derive requested power levels for each rate, based on
|
|
* hardware capabilities (saturation power for band).
|
|
* Basic value is 3dB down from saturation, with further
|
|
* power reductions for highest 3 data rates. These
|
|
* backoffs provide headroom for high rate modulation
|
|
* power peaks, without too much distortion (clipping).
|
|
*/
|
|
/* we'll fill in this array with h/w max power levels */
|
|
clip_pwrs = (s8 *) priv->clip_groups[i].clip_powers;
|
|
|
|
/* divide factory saturation power by 2 to find -3dB level */
|
|
satur_pwr = (s8) (group->saturation_power >> 1);
|
|
|
|
/* fill in channel group's nominal powers for each rate */
|
|
for (rate_index = 0;
|
|
rate_index < IWL_RATE_COUNT; rate_index++, clip_pwrs++) {
|
|
switch (rate_index) {
|
|
case IWL_RATE_36M_INDEX_TABLE:
|
|
if (i == 0) /* B/G */
|
|
*clip_pwrs = satur_pwr;
|
|
else /* A */
|
|
*clip_pwrs = satur_pwr - 5;
|
|
break;
|
|
case IWL_RATE_48M_INDEX_TABLE:
|
|
if (i == 0)
|
|
*clip_pwrs = satur_pwr - 7;
|
|
else
|
|
*clip_pwrs = satur_pwr - 10;
|
|
break;
|
|
case IWL_RATE_54M_INDEX_TABLE:
|
|
if (i == 0)
|
|
*clip_pwrs = satur_pwr - 9;
|
|
else
|
|
*clip_pwrs = satur_pwr - 12;
|
|
break;
|
|
default:
|
|
*clip_pwrs = satur_pwr;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* iwl3945_txpower_set_from_eeprom - Set channel power info based on EEPROM
|
|
*
|
|
* Second pass (during init) to set up priv->channel_info
|
|
*
|
|
* Set up Tx-power settings in our channel info database for each VALID
|
|
* (for this geo/SKU) channel, at all Tx data rates, based on eeprom values
|
|
* and current temperature.
|
|
*
|
|
* Since this is based on current temperature (at init time), these values may
|
|
* not be valid for very long, but it gives us a starting/default point,
|
|
* and allows us to active (i.e. using Tx) scan.
|
|
*
|
|
* This does *not* write values to NIC, just sets up our internal table.
|
|
*/
|
|
int iwl3945_txpower_set_from_eeprom(struct iwl3945_priv *priv)
|
|
{
|
|
struct iwl3945_channel_info *ch_info = NULL;
|
|
struct iwl3945_channel_power_info *pwr_info;
|
|
int delta_index;
|
|
u8 rate_index;
|
|
u8 scan_tbl_index;
|
|
const s8 *clip_pwrs; /* array of power levels for each rate */
|
|
u8 gain, dsp_atten;
|
|
s8 power;
|
|
u8 pwr_index, base_pwr_index, a_band;
|
|
u8 i;
|
|
int temperature;
|
|
|
|
/* save temperature reference,
|
|
* so we can determine next time to calibrate */
|
|
temperature = iwl3945_hw_reg_txpower_get_temperature(priv);
|
|
priv->last_temperature = temperature;
|
|
|
|
iwl3945_hw_reg_init_channel_groups(priv);
|
|
|
|
/* initialize Tx power info for each and every channel, 2.4 and 5.x */
|
|
for (i = 0, ch_info = priv->channel_info; i < priv->channel_count;
|
|
i++, ch_info++) {
|
|
a_band = is_channel_a_band(ch_info);
|
|
if (!is_channel_valid(ch_info))
|
|
continue;
|
|
|
|
/* find this channel's channel group (*not* "band") index */
|
|
ch_info->group_index =
|
|
iwl3945_hw_reg_get_ch_grp_index(priv, ch_info);
|
|
|
|
/* Get this chnlgrp's rate->max/clip-powers table */
|
|
clip_pwrs = priv->clip_groups[ch_info->group_index].clip_powers;
|
|
|
|
/* calculate power index *adjustment* value according to
|
|
* diff between current temperature and factory temperature */
|
|
delta_index = iwl3945_hw_reg_adjust_power_by_temp(temperature,
|
|
priv->eeprom.groups[ch_info->group_index].
|
|
temperature);
|
|
|
|
IWL_DEBUG_POWER("Delta index for channel %d: %d [%d]\n",
|
|
ch_info->channel, delta_index, temperature +
|
|
IWL_TEMP_CONVERT);
|
|
|
|
/* set tx power value for all OFDM rates */
|
|
for (rate_index = 0; rate_index < IWL_OFDM_RATES;
|
|
rate_index++) {
|
|
s32 power_idx;
|
|
int rc;
|
|
|
|
/* use channel group's clip-power table,
|
|
* but don't exceed channel's max power */
|
|
s8 pwr = min(ch_info->max_power_avg,
|
|
clip_pwrs[rate_index]);
|
|
|
|
pwr_info = &ch_info->power_info[rate_index];
|
|
|
|
/* get base (i.e. at factory-measured temperature)
|
|
* power table index for this rate's power */
|
|
rc = iwl3945_hw_reg_get_matched_power_index(priv, pwr,
|
|
ch_info->group_index,
|
|
&power_idx);
|
|
if (rc) {
|
|
IWL_ERROR("Invalid power index\n");
|
|
return rc;
|
|
}
|
|
pwr_info->base_power_index = (u8) power_idx;
|
|
|
|
/* temperature compensate */
|
|
power_idx += delta_index;
|
|
|
|
/* stay within range of gain table */
|
|
power_idx = iwl3945_hw_reg_fix_power_index(power_idx);
|
|
|
|
/* fill 1 OFDM rate's iwl3945_channel_power_info struct */
|
|
pwr_info->requested_power = pwr;
|
|
pwr_info->power_table_index = (u8) power_idx;
|
|
pwr_info->tpc.tx_gain =
|
|
power_gain_table[a_band][power_idx].tx_gain;
|
|
pwr_info->tpc.dsp_atten =
|
|
power_gain_table[a_band][power_idx].dsp_atten;
|
|
}
|
|
|
|
/* set tx power for CCK rates, based on OFDM 12 Mbit settings*/
|
|
pwr_info = &ch_info->power_info[IWL_RATE_12M_INDEX_TABLE];
|
|
power = pwr_info->requested_power +
|
|
IWL_CCK_FROM_OFDM_POWER_DIFF;
|
|
pwr_index = pwr_info->power_table_index +
|
|
IWL_CCK_FROM_OFDM_INDEX_DIFF;
|
|
base_pwr_index = pwr_info->base_power_index +
|
|
IWL_CCK_FROM_OFDM_INDEX_DIFF;
|
|
|
|
/* stay within table range */
|
|
pwr_index = iwl3945_hw_reg_fix_power_index(pwr_index);
|
|
gain = power_gain_table[a_band][pwr_index].tx_gain;
|
|
dsp_atten = power_gain_table[a_band][pwr_index].dsp_atten;
|
|
|
|
/* fill each CCK rate's iwl3945_channel_power_info structure
|
|
* NOTE: All CCK-rate Txpwrs are the same for a given chnl!
|
|
* NOTE: CCK rates start at end of OFDM rates! */
|
|
for (rate_index = 0;
|
|
rate_index < IWL_CCK_RATES; rate_index++) {
|
|
pwr_info = &ch_info->power_info[rate_index+IWL_OFDM_RATES];
|
|
pwr_info->requested_power = power;
|
|
pwr_info->power_table_index = pwr_index;
|
|
pwr_info->base_power_index = base_pwr_index;
|
|
pwr_info->tpc.tx_gain = gain;
|
|
pwr_info->tpc.dsp_atten = dsp_atten;
|
|
}
|
|
|
|
/* set scan tx power, 1Mbit for CCK, 6Mbit for OFDM */
|
|
for (scan_tbl_index = 0;
|
|
scan_tbl_index < IWL_NUM_SCAN_RATES; scan_tbl_index++) {
|
|
s32 actual_index = (scan_tbl_index == 0) ?
|
|
IWL_RATE_1M_INDEX_TABLE : IWL_RATE_6M_INDEX_TABLE;
|
|
iwl3945_hw_reg_set_scan_power(priv, scan_tbl_index,
|
|
actual_index, clip_pwrs, ch_info, a_band);
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int iwl3945_hw_rxq_stop(struct iwl3945_priv *priv)
|
|
{
|
|
int rc;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
rc = iwl3945_grab_nic_access(priv);
|
|
if (rc) {
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
return rc;
|
|
}
|
|
|
|
iwl3945_write_direct32(priv, FH_RCSR_CONFIG(0), 0);
|
|
rc = iwl3945_poll_direct_bit(priv, FH_RSSR_STATUS, (1 << 24), 1000);
|
|
if (rc < 0)
|
|
IWL_ERROR("Can't stop Rx DMA.\n");
|
|
|
|
iwl3945_release_nic_access(priv);
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int iwl3945_hw_tx_queue_init(struct iwl3945_priv *priv, struct iwl3945_tx_queue *txq)
|
|
{
|
|
int rc;
|
|
unsigned long flags;
|
|
int txq_id = txq->q.id;
|
|
|
|
struct iwl3945_shared *shared_data = priv->hw_setting.shared_virt;
|
|
|
|
shared_data->tx_base_ptr[txq_id] = cpu_to_le32((u32)txq->q.dma_addr);
|
|
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
rc = iwl3945_grab_nic_access(priv);
|
|
if (rc) {
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
return rc;
|
|
}
|
|
iwl3945_write_direct32(priv, FH_CBCC_CTRL(txq_id), 0);
|
|
iwl3945_write_direct32(priv, FH_CBCC_BASE(txq_id), 0);
|
|
|
|
iwl3945_write_direct32(priv, FH_TCSR_CONFIG(txq_id),
|
|
ALM_FH_TCSR_TX_CONFIG_REG_VAL_CIRQ_RTC_NOINT |
|
|
ALM_FH_TCSR_TX_CONFIG_REG_VAL_MSG_MODE_TXF |
|
|
ALM_FH_TCSR_TX_CONFIG_REG_VAL_CIRQ_HOST_IFTFD |
|
|
ALM_FH_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_ENABLE_VAL |
|
|
ALM_FH_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_ENABLE);
|
|
iwl3945_release_nic_access(priv);
|
|
|
|
/* fake read to flush all prev. writes */
|
|
iwl3945_read32(priv, FH_TSSR_CBB_BASE);
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int iwl3945_hw_get_rx_read(struct iwl3945_priv *priv)
|
|
{
|
|
struct iwl3945_shared *shared_data = priv->hw_setting.shared_virt;
|
|
|
|
return le32_to_cpu(shared_data->rx_read_ptr[0]);
|
|
}
|
|
|
|
/**
|
|
* iwl3945_init_hw_rate_table - Initialize the hardware rate fallback table
|
|
*/
|
|
int iwl3945_init_hw_rate_table(struct iwl3945_priv *priv)
|
|
{
|
|
int rc, i, index, prev_index;
|
|
struct iwl3945_rate_scaling_cmd rate_cmd = {
|
|
.reserved = {0, 0, 0},
|
|
};
|
|
struct iwl3945_rate_scaling_info *table = rate_cmd.table;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(iwl3945_rates); i++) {
|
|
index = iwl3945_rates[i].table_rs_index;
|
|
|
|
table[index].rate_n_flags =
|
|
iwl3945_hw_set_rate_n_flags(iwl3945_rates[i].plcp, 0);
|
|
table[index].try_cnt = priv->retry_rate;
|
|
prev_index = iwl3945_get_prev_ieee_rate(i);
|
|
table[index].next_rate_index = iwl3945_rates[prev_index].table_rs_index;
|
|
}
|
|
|
|
switch (priv->band) {
|
|
case IEEE80211_BAND_5GHZ:
|
|
IWL_DEBUG_RATE("Select A mode rate scale\n");
|
|
/* If one of the following CCK rates is used,
|
|
* have it fall back to the 6M OFDM rate */
|
|
for (i = IWL_RATE_1M_INDEX_TABLE; i <= IWL_RATE_11M_INDEX_TABLE; i++)
|
|
table[i].next_rate_index = iwl3945_rates[IWL_FIRST_OFDM_RATE].table_rs_index;
|
|
|
|
/* Don't fall back to CCK rates */
|
|
table[IWL_RATE_12M_INDEX_TABLE].next_rate_index = IWL_RATE_9M_INDEX_TABLE;
|
|
|
|
/* Don't drop out of OFDM rates */
|
|
table[IWL_RATE_6M_INDEX_TABLE].next_rate_index =
|
|
iwl3945_rates[IWL_FIRST_OFDM_RATE].table_rs_index;
|
|
break;
|
|
|
|
case IEEE80211_BAND_2GHZ:
|
|
IWL_DEBUG_RATE("Select B/G mode rate scale\n");
|
|
/* If an OFDM rate is used, have it fall back to the
|
|
* 1M CCK rates */
|
|
for (i = IWL_RATE_6M_INDEX_TABLE; i <= IWL_RATE_54M_INDEX_TABLE; i++)
|
|
table[i].next_rate_index = iwl3945_rates[IWL_FIRST_CCK_RATE].table_rs_index;
|
|
|
|
/* CCK shouldn't fall back to OFDM... */
|
|
table[IWL_RATE_11M_INDEX_TABLE].next_rate_index = IWL_RATE_5M_INDEX_TABLE;
|
|
break;
|
|
|
|
default:
|
|
WARN_ON(1);
|
|
break;
|
|
}
|
|
|
|
/* Update the rate scaling for control frame Tx */
|
|
rate_cmd.table_id = 0;
|
|
rc = iwl3945_send_cmd_pdu(priv, REPLY_RATE_SCALE, sizeof(rate_cmd),
|
|
&rate_cmd);
|
|
if (rc)
|
|
return rc;
|
|
|
|
/* Update the rate scaling for data frame Tx */
|
|
rate_cmd.table_id = 1;
|
|
return iwl3945_send_cmd_pdu(priv, REPLY_RATE_SCALE, sizeof(rate_cmd),
|
|
&rate_cmd);
|
|
}
|
|
|
|
/* Called when initializing driver */
|
|
int iwl3945_hw_set_hw_setting(struct iwl3945_priv *priv)
|
|
{
|
|
memset((void *)&priv->hw_setting, 0,
|
|
sizeof(struct iwl3945_driver_hw_info));
|
|
|
|
priv->hw_setting.shared_virt =
|
|
pci_alloc_consistent(priv->pci_dev,
|
|
sizeof(struct iwl3945_shared),
|
|
&priv->hw_setting.shared_phys);
|
|
|
|
if (!priv->hw_setting.shared_virt) {
|
|
IWL_ERROR("failed to allocate pci memory\n");
|
|
mutex_unlock(&priv->mutex);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
priv->hw_setting.rx_buf_size = IWL_RX_BUF_SIZE;
|
|
priv->hw_setting.max_pkt_size = 2342;
|
|
priv->hw_setting.tx_cmd_len = sizeof(struct iwl3945_tx_cmd);
|
|
priv->hw_setting.max_rxq_size = RX_QUEUE_SIZE;
|
|
priv->hw_setting.max_rxq_log = RX_QUEUE_SIZE_LOG;
|
|
priv->hw_setting.max_stations = IWL3945_STATION_COUNT;
|
|
priv->hw_setting.bcast_sta_id = IWL3945_BROADCAST_ID;
|
|
|
|
priv->hw_setting.tx_ant_num = 2;
|
|
return 0;
|
|
}
|
|
|
|
unsigned int iwl3945_hw_get_beacon_cmd(struct iwl3945_priv *priv,
|
|
struct iwl3945_frame *frame, u8 rate)
|
|
{
|
|
struct iwl3945_tx_beacon_cmd *tx_beacon_cmd;
|
|
unsigned int frame_size;
|
|
|
|
tx_beacon_cmd = (struct iwl3945_tx_beacon_cmd *)&frame->u;
|
|
memset(tx_beacon_cmd, 0, sizeof(*tx_beacon_cmd));
|
|
|
|
tx_beacon_cmd->tx.sta_id = priv->hw_setting.bcast_sta_id;
|
|
tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
|
|
|
|
frame_size = iwl3945_fill_beacon_frame(priv,
|
|
tx_beacon_cmd->frame,
|
|
iwl3945_broadcast_addr,
|
|
sizeof(frame->u) - sizeof(*tx_beacon_cmd));
|
|
|
|
BUG_ON(frame_size > MAX_MPDU_SIZE);
|
|
tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
|
|
|
|
tx_beacon_cmd->tx.rate = rate;
|
|
tx_beacon_cmd->tx.tx_flags = (TX_CMD_FLG_SEQ_CTL_MSK |
|
|
TX_CMD_FLG_TSF_MSK);
|
|
|
|
/* supp_rates[0] == OFDM start at IWL_FIRST_OFDM_RATE*/
|
|
tx_beacon_cmd->tx.supp_rates[0] =
|
|
(IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
|
|
|
|
tx_beacon_cmd->tx.supp_rates[1] =
|
|
(IWL_CCK_BASIC_RATES_MASK & 0xF);
|
|
|
|
return sizeof(struct iwl3945_tx_beacon_cmd) + frame_size;
|
|
}
|
|
|
|
void iwl3945_hw_rx_handler_setup(struct iwl3945_priv *priv)
|
|
{
|
|
priv->rx_handlers[REPLY_TX] = iwl3945_rx_reply_tx;
|
|
priv->rx_handlers[REPLY_3945_RX] = iwl3945_rx_reply_rx;
|
|
}
|
|
|
|
void iwl3945_hw_setup_deferred_work(struct iwl3945_priv *priv)
|
|
{
|
|
INIT_DELAYED_WORK(&priv->thermal_periodic,
|
|
iwl3945_bg_reg_txpower_periodic);
|
|
}
|
|
|
|
void iwl3945_hw_cancel_deferred_work(struct iwl3945_priv *priv)
|
|
{
|
|
cancel_delayed_work(&priv->thermal_periodic);
|
|
}
|
|
|
|
static struct iwl_3945_cfg iwl3945_bg_cfg = {
|
|
.name = "3945BG",
|
|
.fw_name = "iwlwifi-3945" IWL3945_UCODE_API ".ucode",
|
|
.sku = IWL_SKU_G,
|
|
};
|
|
|
|
static struct iwl_3945_cfg iwl3945_abg_cfg = {
|
|
.name = "3945ABG",
|
|
.fw_name = "iwlwifi-3945" IWL3945_UCODE_API ".ucode",
|
|
.sku = IWL_SKU_A|IWL_SKU_G,
|
|
};
|
|
|
|
struct pci_device_id iwl3945_hw_card_ids[] = {
|
|
{IWL_PCI_DEVICE(0x4222, 0x1005, iwl3945_bg_cfg)},
|
|
{IWL_PCI_DEVICE(0x4222, 0x1034, iwl3945_bg_cfg)},
|
|
{IWL_PCI_DEVICE(0x4222, 0x1044, iwl3945_bg_cfg)},
|
|
{IWL_PCI_DEVICE(0x4227, 0x1014, iwl3945_bg_cfg)},
|
|
{IWL_PCI_DEVICE(0x4222, PCI_ANY_ID, iwl3945_abg_cfg)},
|
|
{IWL_PCI_DEVICE(0x4227, PCI_ANY_ID, iwl3945_abg_cfg)},
|
|
{0}
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(pci, iwl3945_hw_card_ids);
|