iwlwifi: split the drivers for agn and legacy devices 3945/4965
Intel WiFi devices 3945 and 4965 now have their own driver in the folder
drivers/net/wireless/iwlegacy
Add support to build these drivers independently of the driver for
AGN devices. Selecting the 3945 builds iwl3945.ko and iwl_legacy.ko,
and selecting the 4965 builds iwl4965.ko and iwl_legacy.ko. iwl-legacy.ko
contains code shared between both devices.
The 3945 is an ABG/BG device, with no support for 802.11n. The 4965 is a 2x3
ABGN device.
Signed-off-by: Meenakshi Venkataraman <meenakshi.venkataraman@intel.com>
Acked-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
diff --git a/drivers/net/wireless/iwlegacy/iwl-3945.c b/drivers/net/wireless/iwlegacy/iwl-3945.c
new file mode 100644
index 0000000..8359594
--- /dev/null
+++ b/drivers/net/wireless/iwlegacy/iwl-3945.c
@@ -0,0 +1,2744 @@
+/******************************************************************************
+ *
+ * Copyright(c) 2003 - 2011 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
+ *
+ * The full GNU General Public License is included in this distribution in the
+ * file called LICENSE.
+ *
+ * Contact Information:
+ * Intel Linux Wireless <ilw@linux.intel.com>
+ * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+ *
+ *****************************************************************************/
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/pci.h>
+#include <linux/dma-mapping.h>
+#include <linux/delay.h>
+#include <linux/sched.h>
+#include <linux/skbuff.h>
+#include <linux/netdevice.h>
+#include <linux/wireless.h>
+#include <linux/firmware.h>
+#include <linux/etherdevice.h>
+#include <asm/unaligned.h>
+#include <net/mac80211.h>
+
+#include "iwl-fh.h"
+#include "iwl-3945-fh.h"
+#include "iwl-commands.h"
+#include "iwl-sta.h"
+#include "iwl-3945.h"
+#include "iwl-eeprom.h"
+#include "iwl-core.h"
+#include "iwl-helpers.h"
+#include "iwl-led.h"
+#include "iwl-3945-led.h"
+#include "iwl-3945-debugfs.h"
+
+#define IWL_DECLARE_RATE_INFO(r, ip, in, rp, rn, pp, np) \
+ [IWL_RATE_##r##M_INDEX] = { IWL_RATE_##r##M_PLCP, \
+ IWL_RATE_##r##M_IEEE, \
+ IWL_RATE_##ip##M_INDEX, \
+ IWL_RATE_##in##M_INDEX, \
+ IWL_RATE_##rp##M_INDEX, \
+ IWL_RATE_##rn##M_INDEX, \
+ IWL_RATE_##pp##M_INDEX, \
+ IWL_RATE_##np##M_INDEX, \
+ IWL_RATE_##r##M_INDEX_TABLE, \
+ IWL_RATE_##ip##M_INDEX_TABLE }
+
+/*
+ * Parameter order:
+ * rate, prev rate, next rate, prev tgg rate, next tgg rate
+ *
+ * If there isn't a valid next or previous rate then INV is used which
+ * maps to IWL_RATE_INVALID
+ *
+ */
+const struct iwl3945_rate_info iwl3945_rates[IWL_RATE_COUNT_3945] = {
+ IWL_DECLARE_RATE_INFO(1, INV, 2, INV, 2, INV, 2), /* 1mbps */
+ IWL_DECLARE_RATE_INFO(2, 1, 5, 1, 5, 1, 5), /* 2mbps */
+ IWL_DECLARE_RATE_INFO(5, 2, 6, 2, 11, 2, 11), /*5.5mbps */
+ IWL_DECLARE_RATE_INFO(11, 9, 12, 5, 12, 5, 18), /* 11mbps */
+ IWL_DECLARE_RATE_INFO(6, 5, 9, 5, 11, 5, 11), /* 6mbps */
+ IWL_DECLARE_RATE_INFO(9, 6, 11, 5, 11, 5, 11), /* 9mbps */
+ IWL_DECLARE_RATE_INFO(12, 11, 18, 11, 18, 11, 18), /* 12mbps */
+ IWL_DECLARE_RATE_INFO(18, 12, 24, 12, 24, 11, 24), /* 18mbps */
+ IWL_DECLARE_RATE_INFO(24, 18, 36, 18, 36, 18, 36), /* 24mbps */
+ IWL_DECLARE_RATE_INFO(36, 24, 48, 24, 48, 24, 48), /* 36mbps */
+ IWL_DECLARE_RATE_INFO(48, 36, 54, 36, 54, 36, 54), /* 48mbps */
+ IWL_DECLARE_RATE_INFO(54, 48, INV, 48, INV, 48, INV),/* 54mbps */
+};
+
+static inline u8 iwl3945_get_prev_ieee_rate(u8 rate_index)
+{
+ u8 rate = iwl3945_rates[rate_index].prev_ieee;
+
+ if (rate == IWL_RATE_INVALID)
+ rate = rate_index;
+ return rate;
+}
+
+/* 1 = enable the iwl3945_disable_events() function */
+#define IWL_EVT_DISABLE (0)
+#define IWL_EVT_DISABLE_SIZE (1532/32)
+
+/**
+ * iwl3945_disable_events - Disable selected events in uCode event log
+ *
+ * Disable an event by writing "1"s into "disable"
+ * bitmap in SRAM. Bit position corresponds to Event # (id/type).
+ * Default values of 0 enable uCode events to be logged.
+ * Use for only special debugging. This function is just a placeholder as-is,
+ * you'll need to provide the special bits! ...
+ * ... and set IWL_EVT_DISABLE to 1. */
+void iwl3945_disable_events(struct iwl_priv *priv)
+{
+ int i;
+ u32 base; /* SRAM address of event log header */
+ u32 disable_ptr; /* SRAM address of event-disable bitmap array */
+ u32 array_size; /* # of u32 entries in array */
+ static const u32 evt_disable[IWL_EVT_DISABLE_SIZE] = {
+ 0x00000000, /* 31 - 0 Event id numbers */
+ 0x00000000, /* 63 - 32 */
+ 0x00000000, /* 95 - 64 */
+ 0x00000000, /* 127 - 96 */
+ 0x00000000, /* 159 - 128 */
+ 0x00000000, /* 191 - 160 */
+ 0x00000000, /* 223 - 192 */
+ 0x00000000, /* 255 - 224 */
+ 0x00000000, /* 287 - 256 */
+ 0x00000000, /* 319 - 288 */
+ 0x00000000, /* 351 - 320 */
+ 0x00000000, /* 383 - 352 */
+ 0x00000000, /* 415 - 384 */
+ 0x00000000, /* 447 - 416 */
+ 0x00000000, /* 479 - 448 */
+ 0x00000000, /* 511 - 480 */
+ 0x00000000, /* 543 - 512 */
+ 0x00000000, /* 575 - 544 */
+ 0x00000000, /* 607 - 576 */
+ 0x00000000, /* 639 - 608 */
+ 0x00000000, /* 671 - 640 */
+ 0x00000000, /* 703 - 672 */
+ 0x00000000, /* 735 - 704 */
+ 0x00000000, /* 767 - 736 */
+ 0x00000000, /* 799 - 768 */
+ 0x00000000, /* 831 - 800 */
+ 0x00000000, /* 863 - 832 */
+ 0x00000000, /* 895 - 864 */
+ 0x00000000, /* 927 - 896 */
+ 0x00000000, /* 959 - 928 */
+ 0x00000000, /* 991 - 960 */
+ 0x00000000, /* 1023 - 992 */
+ 0x00000000, /* 1055 - 1024 */
+ 0x00000000, /* 1087 - 1056 */
+ 0x00000000, /* 1119 - 1088 */
+ 0x00000000, /* 1151 - 1120 */
+ 0x00000000, /* 1183 - 1152 */
+ 0x00000000, /* 1215 - 1184 */
+ 0x00000000, /* 1247 - 1216 */
+ 0x00000000, /* 1279 - 1248 */
+ 0x00000000, /* 1311 - 1280 */
+ 0x00000000, /* 1343 - 1312 */
+ 0x00000000, /* 1375 - 1344 */
+ 0x00000000, /* 1407 - 1376 */
+ 0x00000000, /* 1439 - 1408 */
+ 0x00000000, /* 1471 - 1440 */
+ 0x00000000, /* 1503 - 1472 */
+ };
+
+ base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
+ if (!iwl3945_hw_valid_rtc_data_addr(base)) {
+ IWL_ERR(priv, "Invalid event log pointer 0x%08X\n", base);
+ return;
+ }
+
+ disable_ptr = iwl_legacy_read_targ_mem(priv, base + (4 * sizeof(u32)));
+ array_size = iwl_legacy_read_targ_mem(priv, base + (5 * sizeof(u32)));
+
+ if (IWL_EVT_DISABLE && (array_size == IWL_EVT_DISABLE_SIZE)) {
+ IWL_DEBUG_INFO(priv, "Disabling selected uCode log events at 0x%x\n",
+ disable_ptr);
+ for (i = 0; i < IWL_EVT_DISABLE_SIZE; i++)
+ iwl_legacy_write_targ_mem(priv,
+ disable_ptr + (i * sizeof(u32)),
+ evt_disable[i]);
+
+ } else {
+ IWL_DEBUG_INFO(priv, "Selected uCode log events may be disabled\n");
+ IWL_DEBUG_INFO(priv, " by writing \"1\"s into disable bitmap\n");
+ IWL_DEBUG_INFO(priv, " in SRAM at 0x%x, size %d u32s\n",
+ disable_ptr, array_size);
+ }
+
+}
+
+static int iwl3945_hwrate_to_plcp_idx(u8 plcp)
+{
+ int idx;
+
+ for (idx = 0; idx < IWL_RATE_COUNT_3945; idx++)
+ if (iwl3945_rates[idx].plcp == plcp)
+ return idx;
+ return -1;
+}
+
+#ifdef CONFIG_IWLWIFI_LEGACY_DEBUG
+#define TX_STATUS_ENTRY(x) case TX_3945_STATUS_FAIL_ ## x: return #x
+
+static const char *iwl3945_get_tx_fail_reason(u32 status)
+{
+ switch (status & TX_STATUS_MSK) {
+ case TX_3945_STATUS_SUCCESS:
+ return "SUCCESS";
+ TX_STATUS_ENTRY(SHORT_LIMIT);
+ TX_STATUS_ENTRY(LONG_LIMIT);
+ TX_STATUS_ENTRY(FIFO_UNDERRUN);
+ TX_STATUS_ENTRY(MGMNT_ABORT);
+ TX_STATUS_ENTRY(NEXT_FRAG);
+ TX_STATUS_ENTRY(LIFE_EXPIRE);
+ TX_STATUS_ENTRY(DEST_PS);
+ TX_STATUS_ENTRY(ABORTED);
+ TX_STATUS_ENTRY(BT_RETRY);
+ TX_STATUS_ENTRY(STA_INVALID);
+ TX_STATUS_ENTRY(FRAG_DROPPED);
+ TX_STATUS_ENTRY(TID_DISABLE);
+ TX_STATUS_ENTRY(FRAME_FLUSHED);
+ TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL);
+ TX_STATUS_ENTRY(TX_LOCKED);
+ TX_STATUS_ENTRY(NO_BEACON_ON_RADAR);
+ }
+
+ return "UNKNOWN";
+}
+#else
+static inline const char *iwl3945_get_tx_fail_reason(u32 status)
+{
+ return "";
+}
+#endif
+
+/*
+ * get ieee prev rate from rate scale table.
+ * for A and B mode we need to overright prev
+ * value
+ */
+int iwl3945_rs_next_rate(struct iwl_priv *priv, int rate)
+{
+ int next_rate = iwl3945_get_prev_ieee_rate(rate);
+
+ switch (priv->band) {
+ case IEEE80211_BAND_5GHZ:
+ if (rate == IWL_RATE_12M_INDEX)
+ next_rate = IWL_RATE_9M_INDEX;
+ else if (rate == IWL_RATE_6M_INDEX)
+ next_rate = IWL_RATE_6M_INDEX;
+ break;
+ case IEEE80211_BAND_2GHZ:
+ if (!(priv->_3945.sta_supp_rates & IWL_OFDM_RATES_MASK) &&
+ iwl_legacy_is_associated(priv, IWL_RXON_CTX_BSS)) {
+ if (rate == IWL_RATE_11M_INDEX)
+ next_rate = IWL_RATE_5M_INDEX;
+ }
+ break;
+
+ default:
+ break;
+ }
+
+ return next_rate;
+}
+
+
+/**
+ * iwl3945_tx_queue_reclaim - Reclaim Tx queue entries already Tx'd
+ *
+ * When FW advances 'R' index, all entries between old and new 'R' index
+ * need to be reclaimed. As result, some free space forms. If there is
+ * enough free space (> low mark), wake the stack that feeds us.
+ */
+static void iwl3945_tx_queue_reclaim(struct iwl_priv *priv,
+ int txq_id, int index)
+{
+ struct iwl_tx_queue *txq = &priv->txq[txq_id];
+ struct iwl_queue *q = &txq->q;
+ struct iwl_tx_info *tx_info;
+
+ BUG_ON(txq_id == IWL39_CMD_QUEUE_NUM);
+
+ for (index = iwl_legacy_queue_inc_wrap(index, q->n_bd);
+ q->read_ptr != index;
+ q->read_ptr = iwl_legacy_queue_inc_wrap(q->read_ptr, q->n_bd)) {
+
+ tx_info = &txq->txb[txq->q.read_ptr];
+ ieee80211_tx_status_irqsafe(priv->hw, tx_info->skb);
+ tx_info->skb = NULL;
+ priv->cfg->ops->lib->txq_free_tfd(priv, txq);
+ }
+
+ if (iwl_legacy_queue_space(q) > q->low_mark && (txq_id >= 0) &&
+ (txq_id != IWL39_CMD_QUEUE_NUM) &&
+ priv->mac80211_registered)
+ iwl_legacy_wake_queue(priv, txq);
+}
+
+/**
+ * iwl3945_rx_reply_tx - Handle Tx response
+ */
+static void iwl3945_rx_reply_tx(struct iwl_priv *priv,
+ struct iwl_rx_mem_buffer *rxb)
+{
+ struct iwl_rx_packet *pkt = rxb_addr(rxb);
+ u16 sequence = le16_to_cpu(pkt->hdr.sequence);
+ int txq_id = SEQ_TO_QUEUE(sequence);
+ int index = SEQ_TO_INDEX(sequence);
+ struct iwl_tx_queue *txq = &priv->txq[txq_id];
+ struct ieee80211_tx_info *info;
+ struct iwl3945_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
+ u32 status = le32_to_cpu(tx_resp->status);
+ int rate_idx;
+ int fail;
+
+ if ((index >= txq->q.n_bd) || (iwl_legacy_queue_used(&txq->q, index) == 0)) {
+ IWL_ERR(priv, "Read index for DMA queue txq_id (%d) index %d "
+ "is out of range [0-%d] %d %d\n", txq_id,
+ index, txq->q.n_bd, txq->q.write_ptr,
+ txq->q.read_ptr);
+ return;
+ }
+
+ txq->time_stamp = jiffies;
+ info = IEEE80211_SKB_CB(txq->txb[txq->q.read_ptr].skb);
+ ieee80211_tx_info_clear_status(info);
+
+ /* Fill the MRR chain with some info about on-chip retransmissions */
+ rate_idx = iwl3945_hwrate_to_plcp_idx(tx_resp->rate);
+ if (info->band == IEEE80211_BAND_5GHZ)
+ rate_idx -= IWL_FIRST_OFDM_RATE;
+
+ fail = tx_resp->failure_frame;
+
+ info->status.rates[0].idx = rate_idx;
+ info->status.rates[0].count = fail + 1; /* add final attempt */
+
+ /* tx_status->rts_retry_count = tx_resp->failure_rts; */
+ info->flags |= ((status & TX_STATUS_MSK) == TX_STATUS_SUCCESS) ?
+ IEEE80211_TX_STAT_ACK : 0;
+
+ IWL_DEBUG_TX(priv, "Tx queue %d Status %s (0x%08x) plcp rate %d retries %d\n",
+ txq_id, iwl3945_get_tx_fail_reason(status), status,
+ tx_resp->rate, tx_resp->failure_frame);
+
+ IWL_DEBUG_TX_REPLY(priv, "Tx queue reclaim %d\n", index);
+ iwl3945_tx_queue_reclaim(priv, txq_id, index);
+
+ if (status & TX_ABORT_REQUIRED_MSK)
+ IWL_ERR(priv, "TODO: Implement Tx ABORT REQUIRED!!!\n");
+}
+
+
+
+/*****************************************************************************
+ *
+ * Intel PRO/Wireless 3945ABG/BG Network Connection
+ *
+ * RX handler implementations
+ *
+ *****************************************************************************/
+#ifdef CONFIG_IWLWIFI_LEGACY_DEBUGFS
+static void iwl3945_accumulative_statistics(struct iwl_priv *priv,
+ __le32 *stats)
+{
+ int i;
+ __le32 *prev_stats;
+ u32 *accum_stats;
+ u32 *delta, *max_delta;
+
+ prev_stats = (__le32 *)&priv->_3945.statistics;
+ accum_stats = (u32 *)&priv->_3945.accum_statistics;
+ delta = (u32 *)&priv->_3945.delta_statistics;
+ max_delta = (u32 *)&priv->_3945.max_delta;
+
+ for (i = sizeof(__le32); i < sizeof(struct iwl3945_notif_statistics);
+ i += sizeof(__le32), stats++, prev_stats++, delta++,
+ max_delta++, accum_stats++) {
+ if (le32_to_cpu(*stats) > le32_to_cpu(*prev_stats)) {
+ *delta = (le32_to_cpu(*stats) -
+ le32_to_cpu(*prev_stats));
+ *accum_stats += *delta;
+ if (*delta > *max_delta)
+ *max_delta = *delta;
+ }
+ }
+
+ /* reset accumulative statistics for "no-counter" type statistics */
+ priv->_3945.accum_statistics.general.temperature =
+ priv->_3945.statistics.general.temperature;
+ priv->_3945.accum_statistics.general.ttl_timestamp =
+ priv->_3945.statistics.general.ttl_timestamp;
+}
+#endif
+
+void iwl3945_hw_rx_statistics(struct iwl_priv *priv,
+ struct iwl_rx_mem_buffer *rxb)
+{
+ struct iwl_rx_packet *pkt = rxb_addr(rxb);
+
+ IWL_DEBUG_RX(priv, "Statistics notification received (%d vs %d).\n",
+ (int)sizeof(struct iwl3945_notif_statistics),
+ le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK);
+#ifdef CONFIG_IWLWIFI_LEGACY_DEBUGFS
+ iwl3945_accumulative_statistics(priv, (__le32 *)&pkt->u.raw);
+#endif
+ iwl_legacy_recover_from_statistics(priv, pkt);
+
+ memcpy(&priv->_3945.statistics, pkt->u.raw, sizeof(priv->_3945.statistics));
+}
+
+void iwl3945_reply_statistics(struct iwl_priv *priv,
+ struct iwl_rx_mem_buffer *rxb)
+{
+ struct iwl_rx_packet *pkt = rxb_addr(rxb);
+ __le32 *flag = (__le32 *)&pkt->u.raw;
+
+ if (le32_to_cpu(*flag) & UCODE_STATISTICS_CLEAR_MSK) {
+#ifdef CONFIG_IWLWIFI_LEGACY_DEBUGFS
+ memset(&priv->_3945.accum_statistics, 0,
+ sizeof(struct iwl3945_notif_statistics));
+ memset(&priv->_3945.delta_statistics, 0,
+ sizeof(struct iwl3945_notif_statistics));
+ memset(&priv->_3945.max_delta, 0,
+ sizeof(struct iwl3945_notif_statistics));
+#endif
+ IWL_DEBUG_RX(priv, "Statistics have been cleared\n");
+ }
+ iwl3945_hw_rx_statistics(priv, rxb);
+}
+
+
+/******************************************************************************
+ *
+ * Misc. internal state and helper functions
+ *
+ ******************************************************************************/
+
+/* This is necessary only for a number of statistics, see the caller. */
+static int iwl3945_is_network_packet(struct iwl_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 NL80211_IFTYPE_ADHOC: /* Header: Dest. | Source | BSSID */
+ /* packets to our IBSS update information */
+ return !compare_ether_addr(header->addr3, priv->bssid);
+ case NL80211_IFTYPE_STATION: /* 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_pass_packet_to_mac80211(struct iwl_priv *priv,
+ struct iwl_rx_mem_buffer *rxb,
+ struct ieee80211_rx_status *stats)
+{
+ struct iwl_rx_packet *pkt = rxb_addr(rxb);
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)IWL_RX_DATA(pkt);
+ struct iwl3945_rx_frame_hdr *rx_hdr = IWL_RX_HDR(pkt);
+ struct iwl3945_rx_frame_end *rx_end = IWL_RX_END(pkt);
+ u16 len = le16_to_cpu(rx_hdr->len);
+ struct sk_buff *skb;
+ __le16 fc = hdr->frame_control;
+
+ /* We received data from the HW, so stop the watchdog */
+ if (unlikely(len + IWL39_RX_FRAME_SIZE >
+ PAGE_SIZE << priv->hw_params.rx_page_order)) {
+ IWL_DEBUG_DROP(priv, "Corruption detected!\n");
+ return;
+ }
+
+ /* We only process data packets if the interface is open */
+ if (unlikely(!priv->is_open)) {
+ IWL_DEBUG_DROP_LIMIT(priv,
+ "Dropping packet while interface is not open.\n");
+ return;
+ }
+
+ skb = dev_alloc_skb(128);
+ if (!skb) {
+ IWL_ERR(priv, "dev_alloc_skb failed\n");
+ return;
+ }
+
+ if (!iwl3945_mod_params.sw_crypto)
+ iwl_legacy_set_decrypted_flag(priv,
+ (struct ieee80211_hdr *)rxb_addr(rxb),
+ le32_to_cpu(rx_end->status), stats);
+
+ skb_add_rx_frag(skb, 0, rxb->page,
+ (void *)rx_hdr->payload - (void *)pkt, len);
+
+ iwl_legacy_update_stats(priv, false, fc, len);
+ memcpy(IEEE80211_SKB_RXCB(skb), stats, sizeof(*stats));
+
+ ieee80211_rx(priv->hw, skb);
+ priv->alloc_rxb_page--;
+ rxb->page = NULL;
+}
+
+#define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
+
+static void iwl3945_rx_reply_rx(struct iwl_priv *priv,
+ struct iwl_rx_mem_buffer *rxb)
+{
+ struct ieee80211_hdr *header;
+ struct ieee80211_rx_status rx_status;
+ struct iwl_rx_packet *pkt = rxb_addr(rxb);
+ 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);
+ u16 rx_stats_sig_avg __maybe_unused = le16_to_cpu(rx_stats->sig_avg);
+ u16 rx_stats_noise_diff __maybe_unused = le16_to_cpu(rx_stats->noise_diff);
+ u8 network_packet;
+
+ rx_status.flag = 0;
+ rx_status.mactime = le64_to_cpu(rx_end->timestamp);
+ rx_status.band = (rx_hdr->phy_flags & RX_RES_PHY_FLAGS_BAND_24_MSK) ?
+ IEEE80211_BAND_2GHZ : IEEE80211_BAND_5GHZ;
+ rx_status.freq =
+ ieee80211_channel_to_frequency(le16_to_cpu(rx_hdr->channel),
+ rx_status.band);
+
+ 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;
+
+ rx_status.antenna = (le16_to_cpu(rx_hdr->phy_flags) &
+ RX_RES_PHY_FLAGS_ANTENNA_MSK) >> 4;
+
+ /* set the preamble flag if appropriate */
+ if (rx_hdr->phy_flags & RX_RES_PHY_FLAGS_SHORT_PREAMBLE_MSK)
+ rx_status.flag |= RX_FLAG_SHORTPRE;
+
+ if ((unlikely(rx_stats->phy_count > 20))) {
+ IWL_DEBUG_DROP(priv, "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(priv, "Bad CRC or FIFO: 0x%08X.\n", rx_end->status);
+ return;
+ }
+
+
+
+ /* Convert 3945's rssi indicator to dBm */
+ rx_status.signal = rx_stats->rssi - IWL39_RSSI_OFFSET;
+
+ IWL_DEBUG_STATS(priv, "Rssi %d sig_avg %d noise_diff %d\n",
+ rx_status.signal, 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(priv, "[%c] %d RSSI:%d Signal:%u, Rate:%u\n",
+ network_packet ? '*' : ' ',
+ le16_to_cpu(rx_hdr->channel),
+ rx_status.signal, rx_status.signal,
+ rx_status.rate_idx);
+
+ iwl_legacy_dbg_log_rx_data_frame(priv, le16_to_cpu(rx_hdr->len),
+ header);
+
+ if (network_packet) {
+ priv->_3945.last_beacon_time =
+ le32_to_cpu(rx_end->beacon_timestamp);
+ priv->_3945.last_tsf = le64_to_cpu(rx_end->timestamp);
+ priv->_3945.last_rx_rssi = rx_status.signal;
+ }
+
+ iwl3945_pass_packet_to_mac80211(priv, rxb, &rx_status);
+}
+
+int iwl3945_hw_txq_attach_buf_to_tfd(struct iwl_priv *priv,
+ struct iwl_tx_queue *txq,
+ dma_addr_t addr, u16 len, u8 reset, u8 pad)
+{
+ int count;
+ struct iwl_queue *q;
+ struct iwl3945_tfd *tfd, *tfd_tmp;
+
+ q = &txq->q;
+ tfd_tmp = (struct iwl3945_tfd *)txq->tfds;
+ tfd = &tfd_tmp[q->write_ptr];
+
+ if (reset)
+ memset(tfd, 0, sizeof(*tfd));
+
+ count = TFD_CTL_COUNT_GET(le32_to_cpu(tfd->control_flags));
+
+ if ((count >= NUM_TFD_CHUNKS) || (count < 0)) {
+ IWL_ERR(priv, "Error can not send more than %d chunks\n",
+ NUM_TFD_CHUNKS);
+ return -EINVAL;
+ }
+
+ tfd->tbs[count].addr = cpu_to_le32(addr);
+ tfd->tbs[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
+ */
+void iwl3945_hw_txq_free_tfd(struct iwl_priv *priv, struct iwl_tx_queue *txq)
+{
+ struct iwl3945_tfd *tfd_tmp = (struct iwl3945_tfd *)txq->tfds;
+ int index = txq->q.read_ptr;
+ struct iwl3945_tfd *tfd = &tfd_tmp[index];
+ struct pci_dev *dev = priv->pci_dev;
+ int i;
+ int counter;
+
+ /* sanity check */
+ counter = TFD_CTL_COUNT_GET(le32_to_cpu(tfd->control_flags));
+ if (counter > NUM_TFD_CHUNKS) {
+ IWL_ERR(priv, "Too many chunks: %i\n", counter);
+ /* @todo issue fatal error, it is quite serious situation */
+ return;
+ }
+
+ /* Unmap tx_cmd */
+ if (counter)
+ pci_unmap_single(dev,
+ dma_unmap_addr(&txq->meta[index], mapping),
+ dma_unmap_len(&txq->meta[index], len),
+ PCI_DMA_TODEVICE);
+
+ /* unmap chunks if any */
+
+ for (i = 1; i < counter; i++)
+ pci_unmap_single(dev, le32_to_cpu(tfd->tbs[i].addr),
+ le32_to_cpu(tfd->tbs[i].len), PCI_DMA_TODEVICE);
+
+ /* free SKB */
+ if (txq->txb) {
+ struct sk_buff *skb;
+
+ skb = txq->txb[txq->q.read_ptr].skb;
+
+ /* can be called from irqs-disabled context */
+ if (skb) {
+ dev_kfree_skb_any(skb);
+ txq->txb[txq->q.read_ptr].skb = NULL;
+ }
+ }
+}
+
+/**
+ * iwl3945_hw_build_tx_cmd_rate - Add rate portion to TX_CMD:
+ *
+*/
+void iwl3945_hw_build_tx_cmd_rate(struct iwl_priv *priv,
+ struct iwl_device_cmd *cmd,
+ struct ieee80211_tx_info *info,
+ struct ieee80211_hdr *hdr,
+ int sta_id, int tx_id)
+{
+ u16 hw_value = ieee80211_get_tx_rate(priv->hw, info)->hw_value;
+ u16 rate_index = min(hw_value & 0xffff, IWL_RATE_COUNT_3945);
+ u16 rate_mask;
+ int rate;
+ u8 rts_retry_limit;
+ u8 data_retry_limit;
+ __le32 tx_flags;
+ __le16 fc = hdr->frame_control;
+ struct iwl3945_tx_cmd *tx_cmd = (struct iwl3945_tx_cmd *)cmd->cmd.payload;
+
+ rate = iwl3945_rates[rate_index].plcp;
+ tx_flags = tx_cmd->tx_flags;
+
+ /* We need to figure out how to get the sta->supp_rates while
+ * in this running context */
+ rate_mask = IWL_RATES_MASK_3945;
+
+ /* Set retry limit on DATA packets and Probe Responses*/
+ if (ieee80211_is_probe_resp(fc))
+ data_retry_limit = 3;
+ else
+ data_retry_limit = IWL_DEFAULT_TX_RETRY;
+ tx_cmd->data_retry_limit = data_retry_limit;
+
+ if (tx_id >= IWL39_CMD_QUEUE_NUM)
+ rts_retry_limit = 3;
+ else
+ rts_retry_limit = 7;
+
+ if (data_retry_limit < rts_retry_limit)
+ rts_retry_limit = data_retry_limit;
+ tx_cmd->rts_retry_limit = rts_retry_limit;
+
+ tx_cmd->rate = rate;
+ tx_cmd->tx_flags = tx_flags;
+
+ /* OFDM */
+ tx_cmd->supp_rates[0] =
+ ((rate_mask & IWL_OFDM_RATES_MASK) >> IWL_FIRST_OFDM_RATE) & 0xFF;
+
+ /* CCK */
+ tx_cmd->supp_rates[1] = (rate_mask & 0xF);
+
+ IWL_DEBUG_RATE(priv, "Tx sta id: %d, rate: %d (plcp), flags: 0x%4X "
+ "cck/ofdm mask: 0x%x/0x%x\n", sta_id,
+ tx_cmd->rate, le32_to_cpu(tx_cmd->tx_flags),
+ tx_cmd->supp_rates[1], tx_cmd->supp_rates[0]);
+}
+
+static u8 iwl3945_sync_sta(struct iwl_priv *priv, int sta_id, u16 tx_rate)
+{
+ unsigned long flags_spin;
+ struct iwl_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->sta.mode = STA_CONTROL_MODIFY_MSK;
+ iwl_legacy_send_add_sta(priv, &station->sta, CMD_ASYNC);
+ spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
+
+ IWL_DEBUG_RATE(priv, "SCALE sync station %d to rate %d\n",
+ sta_id, tx_rate);
+ return sta_id;
+}
+
+static void iwl3945_set_pwr_vmain(struct iwl_priv *priv)
+{
+/*
+ * (for documentation purposes)
+ * to set power to V_AUX, do
+
+ if (pci_pme_capable(priv->pci_dev, PCI_D3cold)) {
+ iwl_legacy_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
+ APMG_PS_CTRL_VAL_PWR_SRC_VAUX,
+ ~APMG_PS_CTRL_MSK_PWR_SRC);
+
+ iwl_poll_bit(priv, CSR_GPIO_IN,
+ CSR_GPIO_IN_VAL_VAUX_PWR_SRC,
+ CSR_GPIO_IN_BIT_AUX_POWER, 5000);
+ }
+ */
+
+ iwl_legacy_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
+ APMG_PS_CTRL_VAL_PWR_SRC_VMAIN,
+ ~APMG_PS_CTRL_MSK_PWR_SRC);
+
+ iwl_poll_bit(priv, CSR_GPIO_IN, CSR_GPIO_IN_VAL_VMAIN_PWR_SRC,
+ CSR_GPIO_IN_BIT_AUX_POWER, 5000); /* uS */
+}
+
+static int iwl3945_rx_init(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
+{
+ iwl_legacy_write_direct32(priv, FH39_RCSR_RBD_BASE(0), rxq->bd_dma);
+ iwl_legacy_write_direct32(priv, FH39_RCSR_RPTR_ADDR(0),
+ rxq->rb_stts_dma);
+ iwl_legacy_write_direct32(priv, FH39_RCSR_WPTR(0), 0);
+ iwl_legacy_write_direct32(priv, FH39_RCSR_CONFIG(0),
+ FH39_RCSR_RX_CONFIG_REG_VAL_DMA_CHNL_EN_ENABLE |
+ FH39_RCSR_RX_CONFIG_REG_VAL_RDRBD_EN_ENABLE |
+ FH39_RCSR_RX_CONFIG_REG_BIT_WR_STTS_EN |
+ FH39_RCSR_RX_CONFIG_REG_VAL_MAX_FRAG_SIZE_128 |
+ (RX_QUEUE_SIZE_LOG << FH39_RCSR_RX_CONFIG_REG_POS_RBDC_SIZE) |
+ FH39_RCSR_RX_CONFIG_REG_VAL_IRQ_DEST_INT_HOST |
+ (1 << FH39_RCSR_RX_CONFIG_REG_POS_IRQ_RBTH) |
+ FH39_RCSR_RX_CONFIG_REG_VAL_MSG_MODE_FH);
+
+ /* fake read to flush all prev I/O */
+ iwl_legacy_read_direct32(priv, FH39_RSSR_CTRL);
+
+ return 0;
+}
+
+static int iwl3945_tx_reset(struct iwl_priv *priv)
+{
+
+ /* bypass mode */
+ iwl_legacy_write_prph(priv, ALM_SCD_MODE_REG, 0x2);
+
+ /* RA 0 is active */
+ iwl_legacy_write_prph(priv, ALM_SCD_ARASTAT_REG, 0x01);
+
+ /* all 6 fifo are active */
+ iwl_legacy_write_prph(priv, ALM_SCD_TXFACT_REG, 0x3f);
+
+ iwl_legacy_write_prph(priv, ALM_SCD_SBYP_MODE_1_REG, 0x010000);
+ iwl_legacy_write_prph(priv, ALM_SCD_SBYP_MODE_2_REG, 0x030002);
+ iwl_legacy_write_prph(priv, ALM_SCD_TXF4MF_REG, 0x000004);
+ iwl_legacy_write_prph(priv, ALM_SCD_TXF5MF_REG, 0x000005);
+
+ iwl_legacy_write_direct32(priv, FH39_TSSR_CBB_BASE,
+ priv->_3945.shared_phys);
+
+ iwl_legacy_write_direct32(priv, FH39_TSSR_MSG_CONFIG,
+ FH39_TSSR_TX_MSG_CONFIG_REG_VAL_SNOOP_RD_TXPD_ON |
+ FH39_TSSR_TX_MSG_CONFIG_REG_VAL_ORDER_RD_TXPD_ON |
+ FH39_TSSR_TX_MSG_CONFIG_REG_VAL_MAX_FRAG_SIZE_128B |
+ FH39_TSSR_TX_MSG_CONFIG_REG_VAL_SNOOP_RD_TFD_ON |
+ FH39_TSSR_TX_MSG_CONFIG_REG_VAL_ORDER_RD_CBB_ON |
+ FH39_TSSR_TX_MSG_CONFIG_REG_VAL_ORDER_RSP_WAIT_TH |
+ FH39_TSSR_TX_MSG_CONFIG_REG_VAL_RSP_WAIT_TH);
+
+
+ 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 iwl_priv *priv)
+{
+ int rc;
+ int txq_id, slots_num;
+
+ iwl3945_hw_txq_ctx_free(priv);
+
+ /* allocate tx queue structure */
+ rc = iwl_legacy_alloc_txq_mem(priv);
+ if (rc)
+ return rc;
+
+ /* Tx CMD queue */
+ rc = iwl3945_tx_reset(priv);
+ if (rc)
+ goto error;
+
+ /* Tx queue(s) */
+ for (txq_id = 0; txq_id < priv->hw_params.max_txq_num; txq_id++) {
+ slots_num = (txq_id == IWL39_CMD_QUEUE_NUM) ?
+ TFD_CMD_SLOTS : TFD_TX_CMD_SLOTS;
+ rc = iwl_legacy_tx_queue_init(priv, &priv->txq[txq_id],
+ slots_num, txq_id);
+ if (rc) {
+ IWL_ERR(priv, "Tx %d queue init failed\n", txq_id);
+ goto error;
+ }
+ }
+
+ return rc;
+
+ error:
+ iwl3945_hw_txq_ctx_free(priv);
+ return rc;
+}
+
+
+/*
+ * Start up 3945's basic functionality after it has been reset
+ * (e.g. after platform boot, or shutdown via iwl_legacy_apm_stop())
+ * NOTE: This does not load uCode nor start the embedded processor
+ */
+static int iwl3945_apm_init(struct iwl_priv *priv)
+{
+ int ret = iwl_legacy_apm_init(priv);
+
+ /* Clear APMG (NIC's internal power management) interrupts */
+ iwl_legacy_write_prph(priv, APMG_RTC_INT_MSK_REG, 0x0);
+ iwl_legacy_write_prph(priv, APMG_RTC_INT_STT_REG, 0xFFFFFFFF);
+
+ /* Reset radio chip */
+ iwl_legacy_set_bits_prph(priv, APMG_PS_CTRL_REG,
+ APMG_PS_CTRL_VAL_RESET_REQ);
+ udelay(5);
+ iwl_legacy_clear_bits_prph(priv, APMG_PS_CTRL_REG,
+ APMG_PS_CTRL_VAL_RESET_REQ);
+
+ return ret;
+}
+
+static void iwl3945_nic_config(struct iwl_priv *priv)
+{
+ struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
+ unsigned long flags;
+ u8 rev_id = 0;
+
+ spin_lock_irqsave(&priv->lock, flags);
+
+ /* Determine HW type */
+ pci_read_config_byte(priv->pci_dev, PCI_REVISION_ID, &rev_id);
+
+ IWL_DEBUG_INFO(priv, "HW Revision ID = 0x%X\n", rev_id);
+
+ if (rev_id & PCI_CFG_REV_ID_BIT_RTP)
+ IWL_DEBUG_INFO(priv, "RTP type\n");
+ else if (rev_id & PCI_CFG_REV_ID_BIT_BASIC_SKU) {
+ IWL_DEBUG_INFO(priv, "3945 RADIO-MB type\n");
+ iwl_legacy_set_bit(priv, CSR_HW_IF_CONFIG_REG,
+ CSR39_HW_IF_CONFIG_REG_BIT_3945_MB);
+ } else {
+ IWL_DEBUG_INFO(priv, "3945 RADIO-MM type\n");
+ iwl_legacy_set_bit(priv, CSR_HW_IF_CONFIG_REG,
+ CSR39_HW_IF_CONFIG_REG_BIT_3945_MM);
+ }
+
+ if (EEPROM_SKU_CAP_OP_MODE_MRC == eeprom->sku_cap) {
+ IWL_DEBUG_INFO(priv, "SKU OP mode is mrc\n");
+ iwl_legacy_set_bit(priv, CSR_HW_IF_CONFIG_REG,
+ CSR39_HW_IF_CONFIG_REG_BIT_SKU_MRC);
+ } else
+ IWL_DEBUG_INFO(priv, "SKU OP mode is basic\n");
+
+ if ((eeprom->board_revision & 0xF0) == 0xD0) {
+ IWL_DEBUG_INFO(priv, "3945ABG revision is 0x%X\n",
+ eeprom->board_revision);
+ iwl_legacy_set_bit(priv, CSR_HW_IF_CONFIG_REG,
+ CSR39_HW_IF_CONFIG_REG_BIT_BOARD_TYPE);
+ } else {
+ IWL_DEBUG_INFO(priv, "3945ABG revision is 0x%X\n",
+ eeprom->board_revision);
+ iwl_legacy_clear_bit(priv, CSR_HW_IF_CONFIG_REG,
+ CSR39_HW_IF_CONFIG_REG_BIT_BOARD_TYPE);
+ }
+
+ if (eeprom->almgor_m_version <= 1) {
+ iwl_legacy_set_bit(priv, CSR_HW_IF_CONFIG_REG,
+ CSR39_HW_IF_CONFIG_REG_BITS_SILICON_TYPE_A);
+ IWL_DEBUG_INFO(priv, "Card M type A version is 0x%X\n",
+ eeprom->almgor_m_version);
+ } else {
+ IWL_DEBUG_INFO(priv, "Card M type B version is 0x%X\n",
+ eeprom->almgor_m_version);
+ iwl_legacy_set_bit(priv, CSR_HW_IF_CONFIG_REG,
+ CSR39_HW_IF_CONFIG_REG_BITS_SILICON_TYPE_B);
+ }
+ spin_unlock_irqrestore(&priv->lock, flags);
+
+ if (eeprom->sku_cap & EEPROM_SKU_CAP_SW_RF_KILL_ENABLE)
+ IWL_DEBUG_RF_KILL(priv, "SW RF KILL supported in EEPROM.\n");
+
+ if (eeprom->sku_cap & EEPROM_SKU_CAP_HW_RF_KILL_ENABLE)
+ IWL_DEBUG_RF_KILL(priv, "HW RF KILL supported in EEPROM.\n");
+}
+
+int iwl3945_hw_nic_init(struct iwl_priv *priv)
+{
+ int rc;
+ unsigned long flags;
+ struct iwl_rx_queue *rxq = &priv->rxq;
+
+ spin_lock_irqsave(&priv->lock, flags);
+ priv->cfg->ops->lib->apm_ops.init(priv);
+ spin_unlock_irqrestore(&priv->lock, flags);
+
+ iwl3945_set_pwr_vmain(priv);
+
+ priv->cfg->ops->lib->apm_ops.config(priv);
+
+ /* Allocate the RX queue, or reset if it is already allocated */
+ if (!rxq->bd) {
+ rc = iwl_legacy_rx_queue_alloc(priv);
+ if (rc) {
+ IWL_ERR(priv, "Unable to initialize Rx queue\n");
+ return -ENOMEM;
+ }
+ } else
+ iwl3945_rx_queue_reset(priv, rxq);
+
+ iwl3945_rx_replenish(priv);
+
+ iwl3945_rx_init(priv, rxq);
+
+
+ /* Look at using this instead:
+ rxq->need_update = 1;
+ iwl_legacy_rx_queue_update_write_ptr(priv, rxq);
+ */
+
+ iwl_legacy_write_direct32(priv, FH39_RCSR_WPTR(0), rxq->write & ~7);
+
+ 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 iwl_priv *priv)
+{
+ int txq_id;
+
+ /* Tx queues */
+ if (priv->txq)
+ for (txq_id = 0; txq_id < priv->hw_params.max_txq_num;
+ txq_id++)
+ if (txq_id == IWL39_CMD_QUEUE_NUM)
+ iwl_legacy_cmd_queue_free(priv);
+ else
+ iwl_legacy_tx_queue_free(priv, txq_id);
+
+ /* free tx queue structure */
+ iwl_legacy_txq_mem(priv);
+}
+
+void iwl3945_hw_txq_ctx_stop(struct iwl_priv *priv)
+{
+ int txq_id;
+
+ /* stop SCD */
+ iwl_legacy_write_prph(priv, ALM_SCD_MODE_REG, 0);
+ iwl_legacy_write_prph(priv, ALM_SCD_TXFACT_REG, 0);
+
+ /* reset TFD queues */
+ for (txq_id = 0; txq_id < priv->hw_params.max_txq_num; txq_id++) {
+ iwl_legacy_write_direct32(priv, FH39_TCSR_CONFIG(txq_id), 0x0);
+ iwl_poll_direct_bit(priv, FH39_TSSR_TX_STATUS,
+ FH39_TSSR_TX_STATUS_REG_MSK_CHNL_IDLE(txq_id),
+ 1000);
+ }
+
+ iwl3945_hw_txq_ctx_free(priv);
+}
+
+/**
+ * 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 iwl_priv *priv)
+{
+ return iwl_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 iwl_priv *priv)
+{
+ struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
+ 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(priv, "Temperature: %d\n", temperature + IWL_TEMP_CONVERT);
+
+ /* handle insane temp reading */
+ if (iwl3945_hw_reg_temp_out_of_range(temperature)) {
+ IWL_ERR(priv, "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 = 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
+
+/**
+ * iwl3945_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 iwl3945_is_temp_calib_needed(struct iwl_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(priv, "Getting cooler, delta %d,\n", temp_diff);
+ temp_diff = -temp_diff;
+ } else if (temp_diff == 0)
+ IWL_DEBUG_POWER(priv, "Same temp,\n");
+ else
+ IWL_DEBUG_POWER(priv, "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(priv, "Timed thermal calib not needed\n");
+ return 0;
+ }
+
+ IWL_DEBUG_POWER(priv, "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 iwl_priv *priv, u32 scan_tbl_index,
+ s32 rate_index, const s8 *clip_pwrs,
+ struct iwl_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]);
+
+ power = min(power, priv->tx_power_user_lmt);
+ 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_send_tx_power - 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
+ */
+static int iwl3945_send_tx_power(struct iwl_priv *priv)
+{
+ int rate_idx, i;
+ const struct iwl_channel_info *ch_info = NULL;
+ struct iwl3945_txpowertable_cmd txpower = {
+ .channel = priv->contexts[IWL_RXON_CTX_BSS].active.channel,
+ };
+ u16 chan;
+
+ if (WARN_ONCE(test_bit(STATUS_SCAN_HW, &priv->status),
+ "TX Power requested while scanning!\n"))
+ return -EAGAIN;
+
+ chan = le16_to_cpu(priv->contexts[IWL_RXON_CTX_BSS].active.channel);
+
+ txpower.band = (priv->band == IEEE80211_BAND_5GHZ) ? 0 : 1;
+ ch_info = iwl_legacy_get_channel_info(priv, priv->band, chan);
+ if (!ch_info) {
+ IWL_ERR(priv,
+ "Failed to get channel info for channel %d [%d]\n",
+ chan, priv->band);
+ return -EINVAL;
+ }
+
+ if (!iwl_legacy_is_channel_valid(ch_info)) {
+ IWL_DEBUG_POWER(priv, "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 <= IWL39_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(priv, "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(priv, "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 iwl_legacy_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 iwl_priv *priv,
+ struct iwl_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->_3945.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 iwl_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 iwl_priv *priv)
+{
+ struct iwl_channel_info *ch_info = NULL;
+ struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
+ 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;
+
+ if (priv->disable_tx_power_cal ||
+ test_bit(STATUS_SCANNING, &priv->status)) {
+ /* do not perform tx power calibration */
+ return 0;
+ }
+ /* 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 = iwl_legacy_is_channel_a_band(ch_info);
+
+ /* Get this chnlgrp's factory calibration temperature */
+ ref_temp = (s16)eeprom->groups[ch_info->group_index].
+ temperature;
+
+ /* get power index adjustment based on current 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_3945;
+ 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->_3945.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 priv->cfg->ops->lib->send_tx_power(priv);
+}
+
+int iwl3945_hw_reg_set_txpower(struct iwl_priv *priv, s8 power)
+{
+ struct iwl_channel_info *ch_info;
+ s8 max_power;
+ u8 a_band;
+ u8 i;
+
+ if (priv->tx_power_user_lmt == power) {
+ IWL_DEBUG_POWER(priv, "Requested Tx power same as current "
+ "limit: %ddBm.\n", power);
+ return 0;
+ }
+
+ IWL_DEBUG_POWER(priv, "Setting upper limit clamp to %ddBm.\n", power);
+ priv->tx_power_user_lmt = 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 = iwl_legacy_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. */
+ iwl3945_is_temp_calib_needed(priv);
+ iwl3945_hw_reg_comp_txpower_temp(priv);
+
+ return 0;
+}
+
+static int iwl3945_send_rxon_assoc(struct iwl_priv *priv,
+ struct iwl_rxon_context *ctx)
+{
+ int rc = 0;
+ struct iwl_rx_packet *pkt;
+ struct iwl3945_rxon_assoc_cmd rxon_assoc;
+ struct iwl_host_cmd cmd = {
+ .id = REPLY_RXON_ASSOC,
+ .len = sizeof(rxon_assoc),
+ .flags = CMD_WANT_SKB,
+ .data = &rxon_assoc,
+ };
+ const struct iwl_legacy_rxon_cmd *rxon1 = &ctx->staging;
+ const struct iwl_legacy_rxon_cmd *rxon2 = &ctx->active;
+
+ if ((rxon1->flags == rxon2->flags) &&
+ (rxon1->filter_flags == rxon2->filter_flags) &&
+ (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
+ (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
+ IWL_DEBUG_INFO(priv, "Using current RXON_ASSOC. Not resending.\n");
+ return 0;
+ }
+
+ rxon_assoc.flags = ctx->staging.flags;
+ rxon_assoc.filter_flags = ctx->staging.filter_flags;
+ rxon_assoc.ofdm_basic_rates = ctx->staging.ofdm_basic_rates;
+ rxon_assoc.cck_basic_rates = ctx->staging.cck_basic_rates;
+ rxon_assoc.reserved = 0;
+
+ rc = iwl_legacy_send_cmd_sync(priv, &cmd);
+ if (rc)
+ return rc;
+
+ pkt = (struct iwl_rx_packet *)cmd.reply_page;
+ if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) {
+ IWL_ERR(priv, "Bad return from REPLY_RXON_ASSOC command\n");
+ rc = -EIO;
+ }
+
+ iwl_legacy_free_pages(priv, cmd.reply_page);
+
+ return rc;
+}
+
+/**
+ * iwl3945_commit_rxon - commit staging_rxon to hardware
+ *
+ * The RXON command in staging_rxon is committed to the hardware and
+ * the active_rxon structure is updated with the new data. This
+ * function correctly transitions out of the RXON_ASSOC_MSK state if
+ * a HW tune is required based on the RXON structure changes.
+ */
+int iwl3945_commit_rxon(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
+{
+ /* cast away the const for active_rxon in this function */
+ struct iwl3945_rxon_cmd *active_rxon = (void *)&ctx->active;
+ struct iwl3945_rxon_cmd *staging_rxon = (void *)&ctx->staging;
+ int rc = 0;
+ bool new_assoc = !!(staging_rxon->filter_flags & RXON_FILTER_ASSOC_MSK);
+
+ if (test_bit(STATUS_EXIT_PENDING, &priv->status))
+ return -EINVAL;
+
+ if (!iwl_legacy_is_alive(priv))
+ return -1;
+
+ /* always get timestamp with Rx frame */
+ staging_rxon->flags |= RXON_FLG_TSF2HOST_MSK;
+
+ /* select antenna */
+ staging_rxon->flags &=
+ ~(RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_SEL_MSK);
+ staging_rxon->flags |= iwl3945_get_antenna_flags(priv);
+
+ rc = iwl_legacy_check_rxon_cmd(priv, ctx);
+ if (rc) {
+ IWL_ERR(priv, "Invalid RXON configuration. Not committing.\n");
+ return -EINVAL;
+ }
+
+ /* If we don't need to send a full RXON, we can use
+ * iwl3945_rxon_assoc_cmd which is used to reconfigure filter
+ * and other flags for the current radio configuration. */
+ if (!iwl_legacy_full_rxon_required(priv,
+ &priv->contexts[IWL_RXON_CTX_BSS])) {
+ rc = iwl_legacy_send_rxon_assoc(priv,
+ &priv->contexts[IWL_RXON_CTX_BSS]);
+ if (rc) {
+ IWL_ERR(priv, "Error setting RXON_ASSOC "
+ "configuration (%d).\n", rc);
+ return rc;
+ }
+
+ memcpy(active_rxon, staging_rxon, sizeof(*active_rxon));
+
+ return 0;
+ }
+
+ /* If we are currently associated and the new config requires
+ * an RXON_ASSOC and the new config wants the associated mask enabled,
+ * we must clear the associated from the active configuration
+ * before we apply the new config */
+ if (iwl_legacy_is_associated(priv, IWL_RXON_CTX_BSS) && new_assoc) {
+ IWL_DEBUG_INFO(priv, "Toggling associated bit on current RXON\n");
+ active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
+
+ /*
+ * reserved4 and 5 could have been filled by the iwlcore code.
+ * Let's clear them before pushing to the 3945.
+ */
+ active_rxon->reserved4 = 0;
+ active_rxon->reserved5 = 0;
+ rc = iwl_legacy_send_cmd_pdu(priv, REPLY_RXON,
+ sizeof(struct iwl3945_rxon_cmd),
+ &priv->contexts[IWL_RXON_CTX_BSS].active);
+
+ /* If the mask clearing failed then we set
+ * active_rxon back to what it was previously */
+ if (rc) {
+ active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
+ IWL_ERR(priv, "Error clearing ASSOC_MSK on current "
+ "configuration (%d).\n", rc);
+ return rc;
+ }
+ iwl_legacy_clear_ucode_stations(priv,
+ &priv->contexts[IWL_RXON_CTX_BSS]);
+ iwl_legacy_restore_stations(priv,
+ &priv->contexts[IWL_RXON_CTX_BSS]);
+ }
+
+ IWL_DEBUG_INFO(priv, "Sending RXON\n"
+ "* with%s RXON_FILTER_ASSOC_MSK\n"
+ "* channel = %d\n"
+ "* bssid = %pM\n",
+ (new_assoc ? "" : "out"),
+ le16_to_cpu(staging_rxon->channel),
+ staging_rxon->bssid_addr);
+
+ /*
+ * reserved4 and 5 could have been filled by the iwlcore code.
+ * Let's clear them before pushing to the 3945.
+ */
+ staging_rxon->reserved4 = 0;
+ staging_rxon->reserved5 = 0;
+
+ iwl_legacy_set_rxon_hwcrypto(priv, ctx, !iwl3945_mod_params.sw_crypto);
+
+ /* Apply the new configuration */
+ rc = iwl_legacy_send_cmd_pdu(priv, REPLY_RXON,
+ sizeof(struct iwl3945_rxon_cmd),
+ staging_rxon);
+ if (rc) {
+ IWL_ERR(priv, "Error setting new configuration (%d).\n", rc);
+ return rc;
+ }
+
+ memcpy(active_rxon, staging_rxon, sizeof(*active_rxon));
+
+ if (!new_assoc) {
+ iwl_legacy_clear_ucode_stations(priv,
+ &priv->contexts[IWL_RXON_CTX_BSS]);
+ iwl_legacy_restore_stations(priv,
+ &priv->contexts[IWL_RXON_CTX_BSS]);
+ }
+
+ /* If we issue a new RXON command which required a tune then we must
+ * send a new TXPOWER command or we won't be able to Tx any frames */
+ rc = iwl_legacy_set_tx_power(priv, priv->tx_power_next, true);
+ if (rc) {
+ IWL_ERR(priv, "Error setting Tx power (%d).\n", rc);
+ return rc;
+ }
+
+ /* Init the hardware's rate fallback order based on the band */
+ rc = iwl3945_init_hw_rate_table(priv);
+ if (rc) {
+ IWL_ERR(priv, "Error setting HW rate table: %02X\n", rc);
+ return -EIO;
+ }
+
+ 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 iwl_priv *priv)
+{
+ /* This will kick in the "brute force"
+ * iwl3945_hw_reg_comp_txpower_temp() below */
+ if (!iwl3945_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->_3945.thermal_periodic, REG_RECALIB_PERIOD * HZ);
+}
+
+static void iwl3945_bg_reg_txpower_periodic(struct work_struct *work)
+{
+ struct iwl_priv *priv = container_of(work, struct iwl_priv,
+ _3945.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 iwl_priv *priv,
+ const struct iwl_channel_info *ch_info)
+{
+ struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
+ struct iwl3945_eeprom_txpower_group *ch_grp = &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 (iwl_legacy_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(priv, "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 iwl_priv *priv,
+ s8 requested_power,
+ s32 setting_index, s32 *new_index)
+{
+ const struct iwl3945_eeprom_txpower_group *chnl_grp = NULL;
+ struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
+ 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 = &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 iwl_priv *priv)
+{
+ u32 i;
+ s32 rate_index;
+ struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
+ const struct iwl3945_eeprom_txpower_group *group;
+
+ IWL_DEBUG_POWER(priv, "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 = &eeprom->groups[i];
+
+ /* sanity check on factory saturation power value */
+ if (group->saturation_power < 40) {
+ IWL_WARN(priv, "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->_3945.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_3945; 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 iwl_priv *priv)
+{
+ struct iwl_channel_info *ch_info = NULL;
+ struct iwl3945_channel_power_info *pwr_info;
+ struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
+ 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 = iwl_legacy_is_channel_a_band(ch_info);
+ if (!iwl_legacy_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->_3945.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,
+ eeprom->groups[ch_info->group_index].
+ temperature);
+
+ IWL_DEBUG_POWER(priv, "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 uninitialized_var(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_ERR(priv, "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 iwl_priv *priv)
+{
+ int rc;
+
+ iwl_legacy_write_direct32(priv, FH39_RCSR_CONFIG(0), 0);
+ rc = iwl_poll_direct_bit(priv, FH39_RSSR_STATUS,
+ FH39_RSSR_CHNL0_RX_STATUS_CHNL_IDLE, 1000);
+ if (rc < 0)
+ IWL_ERR(priv, "Can't stop Rx DMA.\n");
+
+ return 0;
+}
+
+int iwl3945_hw_tx_queue_init(struct iwl_priv *priv, struct iwl_tx_queue *txq)
+{
+ int txq_id = txq->q.id;
+
+ struct iwl3945_shared *shared_data = priv->_3945.shared_virt;
+
+ shared_data->tx_base_ptr[txq_id] = cpu_to_le32((u32)txq->q.dma_addr);
+
+ iwl_legacy_write_direct32(priv, FH39_CBCC_CTRL(txq_id), 0);
+ iwl_legacy_write_direct32(priv, FH39_CBCC_BASE(txq_id), 0);
+
+ iwl_legacy_write_direct32(priv, FH39_TCSR_CONFIG(txq_id),
+ FH39_TCSR_TX_CONFIG_REG_VAL_CIRQ_RTC_NOINT |
+ FH39_TCSR_TX_CONFIG_REG_VAL_MSG_MODE_TXF |
+ FH39_TCSR_TX_CONFIG_REG_VAL_CIRQ_HOST_IFTFD |
+ FH39_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_ENABLE_VAL |
+ FH39_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_ENABLE);
+
+ /* fake read to flush all prev. writes */
+ iwl_read32(priv, FH39_TSSR_CBB_BASE);
+
+ return 0;
+}
+
+/*
+ * HCMD utils
+ */
+static u16 iwl3945_get_hcmd_size(u8 cmd_id, u16 len)
+{
+ switch (cmd_id) {
+ case REPLY_RXON:
+ return sizeof(struct iwl3945_rxon_cmd);
+ case POWER_TABLE_CMD:
+ return sizeof(struct iwl3945_powertable_cmd);
+ default:
+ return len;
+ }
+}
+
+
+static u16 iwl3945_build_addsta_hcmd(const struct iwl_legacy_addsta_cmd *cmd,
+ u8 *data)
+{
+ struct iwl3945_addsta_cmd *addsta = (struct iwl3945_addsta_cmd *)data;
+ addsta->mode = cmd->mode;
+ memcpy(&addsta->sta, &cmd->sta, sizeof(struct sta_id_modify));
+ memcpy(&addsta->key, &cmd->key, sizeof(struct iwl4965_keyinfo));
+ addsta->station_flags = cmd->station_flags;
+ addsta->station_flags_msk = cmd->station_flags_msk;
+ addsta->tid_disable_tx = cpu_to_le16(0);
+ addsta->rate_n_flags = cmd->rate_n_flags;
+ addsta->add_immediate_ba_tid = cmd->add_immediate_ba_tid;
+ addsta->remove_immediate_ba_tid = cmd->remove_immediate_ba_tid;
+ addsta->add_immediate_ba_ssn = cmd->add_immediate_ba_ssn;
+
+ return (u16)sizeof(struct iwl3945_addsta_cmd);
+}
+
+static int iwl3945_add_bssid_station(struct iwl_priv *priv,
+ const u8 *addr, u8 *sta_id_r)
+{
+ struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
+ int ret;
+ u8 sta_id;
+ unsigned long flags;
+
+ if (sta_id_r)
+ *sta_id_r = IWL_INVALID_STATION;
+
+ ret = iwl_legacy_add_station_common(priv, ctx, addr, 0, NULL, &sta_id);
+ if (ret) {
+ IWL_ERR(priv, "Unable to add station %pM\n", addr);
+ return ret;
+ }
+
+ if (sta_id_r)
+ *sta_id_r = sta_id;
+
+ spin_lock_irqsave(&priv->sta_lock, flags);
+ priv->stations[sta_id].used |= IWL_STA_LOCAL;
+ spin_unlock_irqrestore(&priv->sta_lock, flags);
+
+ return 0;
+}
+static int iwl3945_manage_ibss_station(struct iwl_priv *priv,
+ struct ieee80211_vif *vif, bool add)
+{
+ struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
+ int ret;
+
+ if (add) {
+ ret = iwl3945_add_bssid_station(priv, vif->bss_conf.bssid,
+ &vif_priv->ibss_bssid_sta_id);
+ if (ret)
+ return ret;
+
+ iwl3945_sync_sta(priv, vif_priv->ibss_bssid_sta_id,
+ (priv->band == IEEE80211_BAND_5GHZ) ?
+ IWL_RATE_6M_PLCP : IWL_RATE_1M_PLCP);
+ iwl3945_rate_scale_init(priv->hw, vif_priv->ibss_bssid_sta_id);
+
+ return 0;
+ }
+
+ return iwl_legacy_remove_station(priv, vif_priv->ibss_bssid_sta_id,
+ vif->bss_conf.bssid);
+}
+
+/**
+ * iwl3945_init_hw_rate_table - Initialize the hardware rate fallback table
+ */
+int iwl3945_init_hw_rate_table(struct iwl_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(priv, "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(priv, "Select B/G mode rate scale\n");
+ /* If an OFDM rate is used, have it fall back to the
+ * 1M CCK rates */
+
+ if (!(priv->_3945.sta_supp_rates & IWL_OFDM_RATES_MASK) &&
+ iwl_legacy_is_associated(priv, IWL_RXON_CTX_BSS)) {
+
+ index = IWL_FIRST_CCK_RATE;
+ for (i = IWL_RATE_6M_INDEX_TABLE;
+ i <= IWL_RATE_54M_INDEX_TABLE; i++)
+ table[i].next_rate_index =
+ iwl3945_rates[index].table_rs_index;
+
+ index = IWL_RATE_11M_INDEX_TABLE;
+ /* CCK shouldn't fall back to OFDM... */
+ table[index].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 = iwl_legacy_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 iwl_legacy_send_cmd_pdu(priv, REPLY_RATE_SCALE, sizeof(rate_cmd),
+ &rate_cmd);
+}
+
+/* Called when initializing driver */
+int iwl3945_hw_set_hw_params(struct iwl_priv *priv)
+{
+ memset((void *)&priv->hw_params, 0,
+ sizeof(struct iwl_hw_params));
+
+ priv->_3945.shared_virt =
+ dma_alloc_coherent(&priv->pci_dev->dev,
+ sizeof(struct iwl3945_shared),
+ &priv->_3945.shared_phys, GFP_KERNEL);
+ if (!priv->_3945.shared_virt) {
+ IWL_ERR(priv, "failed to allocate pci memory\n");
+ return -ENOMEM;
+ }
+
+ /* Assign number of Usable TX queues */
+ priv->hw_params.max_txq_num = priv->cfg->base_params->num_of_queues;
+
+ priv->hw_params.tfd_size = sizeof(struct iwl3945_tfd);
+ priv->hw_params.rx_page_order = get_order(IWL_RX_BUF_SIZE_3K);
+ priv->hw_params.max_rxq_size = RX_QUEUE_SIZE;
+ priv->hw_params.max_rxq_log = RX_QUEUE_SIZE_LOG;
+ priv->hw_params.max_stations = IWL3945_STATION_COUNT;
+ priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id = IWL3945_BROADCAST_ID;
+
+ priv->sta_key_max_num = STA_KEY_MAX_NUM;
+
+ priv->hw_params.rx_wrt_ptr_reg = FH39_RSCSR_CHNL0_WPTR;
+ priv->hw_params.max_beacon_itrvl = IWL39_MAX_UCODE_BEACON_INTERVAL;
+ priv->hw_params.beacon_time_tsf_bits = IWL3945_EXT_BEACON_TIME_POS;
+
+ return 0;
+}
+
+unsigned int iwl3945_hw_get_beacon_cmd(struct iwl_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->contexts[IWL_RXON_CTX_BSS].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,
+ 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 iwl_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 iwl_priv *priv)
+{
+ INIT_DELAYED_WORK(&priv->_3945.thermal_periodic,
+ iwl3945_bg_reg_txpower_periodic);
+}
+
+void iwl3945_hw_cancel_deferred_work(struct iwl_priv *priv)
+{
+ cancel_delayed_work(&priv->_3945.thermal_periodic);
+}
+
+/* check contents of special bootstrap uCode SRAM */
+static int iwl3945_verify_bsm(struct iwl_priv *priv)
+ {
+ __le32 *image = priv->ucode_boot.v_addr;
+ u32 len = priv->ucode_boot.len;
+ u32 reg;
+ u32 val;
+
+ IWL_DEBUG_INFO(priv, "Begin verify bsm\n");
+
+ /* verify BSM SRAM contents */
+ val = iwl_legacy_read_prph(priv, BSM_WR_DWCOUNT_REG);
+ for (reg = BSM_SRAM_LOWER_BOUND;
+ reg < BSM_SRAM_LOWER_BOUND + len;
+ reg += sizeof(u32), image++) {
+ val = iwl_legacy_read_prph(priv, reg);
+ if (val != le32_to_cpu(*image)) {
+ IWL_ERR(priv, "BSM uCode verification failed at "
+ "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
+ BSM_SRAM_LOWER_BOUND,
+ reg - BSM_SRAM_LOWER_BOUND, len,
+ val, le32_to_cpu(*image));
+ return -EIO;
+ }
+ }
+
+ IWL_DEBUG_INFO(priv, "BSM bootstrap uCode image OK\n");
+
+ return 0;
+}
+
+
+/******************************************************************************
+ *
+ * EEPROM related functions
+ *
+ ******************************************************************************/
+
+/*
+ * Clear the OWNER_MSK, to establish driver (instead of uCode running on
+ * embedded controller) as EEPROM reader; each read is a series of pulses
+ * to/from the EEPROM chip, not a single event, so even reads could conflict
+ * if they weren't arbitrated by some ownership mechanism. Here, the driver
+ * simply claims ownership, which should be safe when this function is called
+ * (i.e. before loading uCode!).
+ */
+static int iwl3945_eeprom_acquire_semaphore(struct iwl_priv *priv)
+{
+ _iwl_legacy_clear_bit(priv, CSR_EEPROM_GP, CSR_EEPROM_GP_IF_OWNER_MSK);
+ return 0;
+}
+
+
+static void iwl3945_eeprom_release_semaphore(struct iwl_priv *priv)
+{
+ return;
+}
+
+ /**
+ * iwl3945_load_bsm - Load bootstrap instructions
+ *
+ * BSM operation:
+ *
+ * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
+ * in special SRAM that does not power down during RFKILL. When powering back
+ * up after power-saving sleeps (or during initial uCode load), the BSM loads
+ * the bootstrap program into the on-board processor, and starts it.
+ *
+ * The bootstrap program loads (via DMA) instructions and data for a new
+ * program from host DRAM locations indicated by the host driver in the
+ * BSM_DRAM_* registers. Once the new program is loaded, it starts
+ * automatically.
+ *
+ * When initializing the NIC, the host driver points the BSM to the
+ * "initialize" uCode image. This uCode sets up some internal data, then
+ * notifies host via "initialize alive" that it is complete.
+ *
+ * The host then replaces the BSM_DRAM_* pointer values to point to the
+ * normal runtime uCode instructions and a backup uCode data cache buffer
+ * (filled initially with starting data values for the on-board processor),
+ * then triggers the "initialize" uCode to load and launch the runtime uCode,
+ * which begins normal operation.
+ *
+ * When doing a power-save shutdown, runtime uCode saves data SRAM into
+ * the backup data cache in DRAM before SRAM is powered down.
+ *
+ * When powering back up, the BSM loads the bootstrap program. This reloads
+ * the runtime uCode instructions and the backup data cache into SRAM,
+ * and re-launches the runtime uCode from where it left off.
+ */
+static int iwl3945_load_bsm(struct iwl_priv *priv)
+{
+ __le32 *image = priv->ucode_boot.v_addr;
+ u32 len = priv->ucode_boot.len;
+ dma_addr_t pinst;
+ dma_addr_t pdata;
+ u32 inst_len;
+ u32 data_len;
+ int rc;
+ int i;
+ u32 done;
+ u32 reg_offset;
+
+ IWL_DEBUG_INFO(priv, "Begin load bsm\n");
+
+ /* make sure bootstrap program is no larger than BSM's SRAM size */
+ if (len > IWL39_MAX_BSM_SIZE)
+ return -EINVAL;
+
+ /* Tell bootstrap uCode where to find the "Initialize" uCode
+ * in host DRAM ... host DRAM physical address bits 31:0 for 3945.
+ * NOTE: iwl3945_initialize_alive_start() will replace these values,
+ * after the "initialize" uCode has run, to point to
+ * runtime/protocol instructions and backup data cache. */
+ pinst = priv->ucode_init.p_addr;
+ pdata = priv->ucode_init_data.p_addr;
+ inst_len = priv->ucode_init.len;
+ data_len = priv->ucode_init_data.len;
+
+ iwl_legacy_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
+ iwl_legacy_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
+ iwl_legacy_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG, inst_len);
+ iwl_legacy_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG, data_len);
+
+ /* Fill BSM memory with bootstrap instructions */
+ for (reg_offset = BSM_SRAM_LOWER_BOUND;
+ reg_offset < BSM_SRAM_LOWER_BOUND + len;
+ reg_offset += sizeof(u32), image++)
+ _iwl_legacy_write_prph(priv, reg_offset,
+ le32_to_cpu(*image));
+
+ rc = iwl3945_verify_bsm(priv);
+ if (rc)
+ return rc;
+
+ /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
+ iwl_legacy_write_prph(priv, BSM_WR_MEM_SRC_REG, 0x0);
+ iwl_legacy_write_prph(priv, BSM_WR_MEM_DST_REG,
+ IWL39_RTC_INST_LOWER_BOUND);
+ iwl_legacy_write_prph(priv, BSM_WR_DWCOUNT_REG, len / sizeof(u32));
+
+ /* Load bootstrap code into instruction SRAM now,
+ * to prepare to load "initialize" uCode */
+ iwl_legacy_write_prph(priv, BSM_WR_CTRL_REG,
+ BSM_WR_CTRL_REG_BIT_START);
+
+ /* Wait for load of bootstrap uCode to finish */
+ for (i = 0; i < 100; i++) {
+ done = iwl_legacy_read_prph(priv, BSM_WR_CTRL_REG);
+ if (!(done & BSM_WR_CTRL_REG_BIT_START))
+ break;
+ udelay(10);
+ }
+ if (i < 100)
+ IWL_DEBUG_INFO(priv, "BSM write complete, poll %d iterations\n", i);
+ else {
+ IWL_ERR(priv, "BSM write did not complete!\n");
+ return -EIO;
+ }
+
+ /* Enable future boot loads whenever power management unit triggers it
+ * (e.g. when powering back up after power-save shutdown) */
+ iwl_legacy_write_prph(priv, BSM_WR_CTRL_REG,
+ BSM_WR_CTRL_REG_BIT_START_EN);
+
+ return 0;
+}
+
+static struct iwl_hcmd_ops iwl3945_hcmd = {
+ .rxon_assoc = iwl3945_send_rxon_assoc,
+ .commit_rxon = iwl3945_commit_rxon,
+};
+
+static struct iwl_lib_ops iwl3945_lib = {
+ .txq_attach_buf_to_tfd = iwl3945_hw_txq_attach_buf_to_tfd,
+ .txq_free_tfd = iwl3945_hw_txq_free_tfd,
+ .txq_init = iwl3945_hw_tx_queue_init,
+ .load_ucode = iwl3945_load_bsm,
+ .dump_nic_event_log = iwl3945_dump_nic_event_log,
+ .dump_nic_error_log = iwl3945_dump_nic_error_log,
+ .apm_ops = {
+ .init = iwl3945_apm_init,
+ .config = iwl3945_nic_config,
+ },
+ .eeprom_ops = {
+ .regulatory_bands = {
+ EEPROM_REGULATORY_BAND_1_CHANNELS,
+ EEPROM_REGULATORY_BAND_2_CHANNELS,
+ EEPROM_REGULATORY_BAND_3_CHANNELS,
+ EEPROM_REGULATORY_BAND_4_CHANNELS,
+ EEPROM_REGULATORY_BAND_5_CHANNELS,
+ EEPROM_REGULATORY_BAND_NO_HT40,
+ EEPROM_REGULATORY_BAND_NO_HT40,
+ },
+ .acquire_semaphore = iwl3945_eeprom_acquire_semaphore,
+ .release_semaphore = iwl3945_eeprom_release_semaphore,
+ },
+ .send_tx_power = iwl3945_send_tx_power,
+ .is_valid_rtc_data_addr = iwl3945_hw_valid_rtc_data_addr,
+
+ .debugfs_ops = {
+ .rx_stats_read = iwl3945_ucode_rx_stats_read,
+ .tx_stats_read = iwl3945_ucode_tx_stats_read,
+ .general_stats_read = iwl3945_ucode_general_stats_read,
+ },
+};
+
+static const struct iwl_legacy_ops iwl3945_legacy_ops = {
+ .post_associate = iwl3945_post_associate,
+ .config_ap = iwl3945_config_ap,
+ .manage_ibss_station = iwl3945_manage_ibss_station,
+};
+
+static struct iwl_hcmd_utils_ops iwl3945_hcmd_utils = {
+ .get_hcmd_size = iwl3945_get_hcmd_size,
+ .build_addsta_hcmd = iwl3945_build_addsta_hcmd,
+ .request_scan = iwl3945_request_scan,
+ .post_scan = iwl3945_post_scan,
+};
+
+static const struct iwl_ops iwl3945_ops = {
+ .lib = &iwl3945_lib,
+ .hcmd = &iwl3945_hcmd,
+ .utils = &iwl3945_hcmd_utils,
+ .led = &iwl3945_led_ops,
+ .legacy = &iwl3945_legacy_ops,
+ .ieee80211_ops = &iwl3945_hw_ops,
+};
+
+static struct iwl_base_params iwl3945_base_params = {
+ .eeprom_size = IWL3945_EEPROM_IMG_SIZE,
+ .num_of_queues = IWL39_NUM_QUEUES,
+ .pll_cfg_val = CSR39_ANA_PLL_CFG_VAL,
+ .set_l0s = false,
+ .use_bsm = true,
+ .led_compensation = 64,
+ .plcp_delta_threshold = IWL_MAX_PLCP_ERR_LONG_THRESHOLD_DEF,
+ .wd_timeout = IWL_DEF_WD_TIMEOUT,
+ .max_event_log_size = 512,
+};
+
+static struct iwl_cfg iwl3945_bg_cfg = {
+ .name = "3945BG",
+ .fw_name_pre = IWL3945_FW_PRE,
+ .ucode_api_max = IWL3945_UCODE_API_MAX,
+ .ucode_api_min = IWL3945_UCODE_API_MIN,
+ .sku = IWL_SKU_G,
+ .eeprom_ver = EEPROM_3945_EEPROM_VERSION,
+ .ops = &iwl3945_ops,
+ .mod_params = &iwl3945_mod_params,
+ .base_params = &iwl3945_base_params,
+ .led_mode = IWL_LED_BLINK,
+};
+
+static struct iwl_cfg iwl3945_abg_cfg = {
+ .name = "3945ABG",
+ .fw_name_pre = IWL3945_FW_PRE,
+ .ucode_api_max = IWL3945_UCODE_API_MAX,
+ .ucode_api_min = IWL3945_UCODE_API_MIN,
+ .sku = IWL_SKU_A|IWL_SKU_G,
+ .eeprom_ver = EEPROM_3945_EEPROM_VERSION,
+ .ops = &iwl3945_ops,
+ .mod_params = &iwl3945_mod_params,
+ .base_params = &iwl3945_base_params,
+ .led_mode = IWL_LED_BLINK,
+};
+
+DEFINE_PCI_DEVICE_TABLE(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);