| /****************************************************************************** |
| * |
| * Copyright(c) 2003 - 2010 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" |
| |
| #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 */ |
| }; |
| |
| /* 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 */ |
| 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_read_targ_mem(priv, base + (4 * sizeof(u32))); |
| array_size = iwl_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_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_DEBUG |
| #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x |
| |
| static const char *iwl3945_get_tx_fail_reason(u32 status) |
| { |
| switch (status & TX_STATUS_MSK) { |
| case TX_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_is_associated(priv)) { |
| 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 == IWL_CMD_QUEUE_NUM); |
| |
| for (index = iwl_queue_inc_wrap(index, q->n_bd); q->read_ptr != index; |
| q->read_ptr = iwl_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[0]); |
| tx_info->skb[0] = NULL; |
| priv->cfg->ops->lib->txq_free_tfd(priv, txq); |
| } |
| |
| if (iwl_queue_space(q) > q->low_mark && (txq_id >= 0) && |
| (txq_id != IWL_CMD_QUEUE_NUM) && |
| priv->mac80211_registered) |
| iwl_wake_queue(priv, txq_id); |
| } |
| |
| /** |
| * 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_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; |
| } |
| |
| info = IEEE80211_SKB_CB(txq->txb[txq->q.read_ptr].skb[0]); |
| 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 (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK)) |
| IWL_ERR(priv, "TODO: Implement Tx ABORT REQUIRED!!!\n"); |
| } |
| |
| |
| |
| /***************************************************************************** |
| * |
| * Intel PRO/Wireless 3945ABG/BG Network Connection |
| * |
| * RX handler implementations |
| * |
| *****************************************************************************/ |
| |
| 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); |
| |
| memcpy(&priv->_3945.statistics, pkt->u.raw, sizeof(priv->_3945.statistics)); |
| } |
| |
| /****************************************************************************** |
| * |
| * Misc. internal state and helper functions |
| * |
| ******************************************************************************/ |
| #ifdef CONFIG_IWLWIFI_DEBUG |
| |
| /** |
| * iwl3945_report_frame - dump frame to syslog during debug sessions |
| * |
| * You may hack this function to show different aspects of received frames, |
| * including selective frame dumps. |
| * group100 parameter selects whether to show 1 out of 100 good frames. |
| */ |
| static void _iwl3945_dbg_report_frame(struct iwl_priv *priv, |
| struct iwl_rx_packet *pkt, |
| struct ieee80211_hdr *header, int group100) |
| { |
| u32 to_us; |
| u32 print_summary = 0; |
| u32 print_dump = 0; /* set to 1 to dump all frames' contents */ |
| u32 hundred = 0; |
| u32 dataframe = 0; |
| __le16 fc; |
| u16 seq_ctl; |
| u16 channel; |
| u16 phy_flags; |
| u16 length; |
| u16 status; |
| u16 bcn_tmr; |
| u32 tsf_low; |
| u64 tsf; |
| u8 rssi; |
| u8 agc; |
| u16 sig_avg; |
| u16 noise_diff; |
| 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); |
| u8 *data = IWL_RX_DATA(pkt); |
| |
| /* MAC header */ |
| fc = header->frame_control; |
| seq_ctl = le16_to_cpu(header->seq_ctrl); |
| |
| /* metadata */ |
| channel = le16_to_cpu(rx_hdr->channel); |
| phy_flags = le16_to_cpu(rx_hdr->phy_flags); |
| length = le16_to_cpu(rx_hdr->len); |
| |
| /* end-of-frame status and timestamp */ |
| status = le32_to_cpu(rx_end->status); |
| bcn_tmr = le32_to_cpu(rx_end->beacon_timestamp); |
| tsf_low = le64_to_cpu(rx_end->timestamp) & 0x0ffffffff; |
| tsf = le64_to_cpu(rx_end->timestamp); |
| |
| /* signal statistics */ |
| rssi = rx_stats->rssi; |
| agc = rx_stats->agc; |
| sig_avg = le16_to_cpu(rx_stats->sig_avg); |
| noise_diff = le16_to_cpu(rx_stats->noise_diff); |
| |
| to_us = !compare_ether_addr(header->addr1, priv->mac_addr); |
| |
| /* 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(priv, "%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(priv, "%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) |
| iwl_print_hex_dump(priv, IWL_DL_RX, data, length); |
| } |
| |
| static void iwl3945_dbg_report_frame(struct iwl_priv *priv, |
| struct iwl_rx_packet *pkt, |
| struct ieee80211_hdr *header, int group100) |
| { |
| if (iwl_get_debug_level(priv) & IWL_DL_RX) |
| _iwl3945_dbg_report_frame(priv, pkt, header, group100); |
| } |
| |
| #else |
| static inline void iwl3945_dbg_report_frame(struct iwl_priv *priv, |
| struct iwl_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 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; |
| int ret; |
| __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 = alloc_skb(IWL_LINK_HDR_MAX * 2, GFP_ATOMIC); |
| if (!skb) { |
| IWL_ERR(priv, "alloc_skb failed\n"); |
| return; |
| } |
| |
| if (!iwl3945_mod_params.sw_crypto) |
| iwl_set_decrypted_flag(priv, |
| (struct ieee80211_hdr *)rxb_addr(rxb), |
| le32_to_cpu(rx_end->status), stats); |
| |
| skb_reserve(skb, IWL_LINK_HDR_MAX); |
| skb_add_rx_frag(skb, 0, rxb->page, |
| (void *)rx_hdr->payload - (void *)pkt, len); |
| |
| /* mac80211 currently doesn't support paged SKB. Convert it to |
| * linear SKB for management frame and data frame requires |
| * software decryption or software defragementation. */ |
| if (ieee80211_is_mgmt(fc) || |
| ieee80211_has_protected(fc) || |
| ieee80211_has_morefrags(fc) || |
| le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_FRAG) |
| ret = skb_linearize(skb); |
| else |
| ret = __pskb_pull_tail(skb, min_t(u16, IWL_LINK_HDR_MAX, len)) ? |
| 0 : -ENOMEM; |
| |
| if (ret) { |
| kfree_skb(skb); |
| goto out; |
| } |
| |
| /* |
| * XXX: We cannot touch the page and its virtual memory (pkt) after |
| * here. It might have already been freed by the above skb change. |
| */ |
| |
| iwl_update_stats(priv, false, fc, len); |
| memcpy(IEEE80211_SKB_RXCB(skb), stats, sizeof(*stats)); |
| |
| ieee80211_rx(priv->hw, skb); |
| out: |
| 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); |
| 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.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; |
| |
| 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; |
| |
| /* 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); |
| } else { |
| rx_status.noise = priv->last_rx_noise; |
| } |
| |
| |
| IWL_DEBUG_STATS(priv, "Rssi %d noise %d sig_avg %d noise_diff %d\n", |
| rx_status.signal, rx_status.noise, |
| 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, 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); |
| |
| /* Set "1" to report good data frames in groups of 100 */ |
| iwl3945_dbg_report_frame(priv, pkt, header, 1); |
| iwl_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; |
| priv->last_rx_noise = rx_status.noise; |
| } |
| |
| 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, |
| pci_unmap_addr(&txq->meta[index], mapping), |
| pci_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); |
| 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 ; |
| } |
| |
| /** |
| * 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; |
| |
| |
| /* 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 >= IWL_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; |
| |
| 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; |
| } |
| } |
| |
| 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]); |
| } |
| |
| u8 iwl3945_sync_sta(struct iwl_priv *priv, int sta_id, u16 tx_rate, u8 flags) |
| { |
| 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; |
| |
| spin_unlock_irqrestore(&priv->sta_lock, flags_spin); |
| |
| iwl_send_add_sta(priv, &station->sta, flags); |
| IWL_DEBUG_RATE(priv, "SCALE sync station %d to rate %d\n", |
| sta_id, tx_rate); |
| return sta_id; |
| } |
| |
| static int iwl3945_set_pwr_src(struct iwl_priv *priv, enum iwl_pwr_src src) |
| { |
| if (src == IWL_PWR_SRC_VAUX) { |
| if (pci_pme_capable(priv->pci_dev, PCI_D3cold)) { |
| iwl_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); |
| } |
| } else { |
| iwl_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 */ |
| } |
| |
| return 0; |
| } |
| |
| static int iwl3945_rx_init(struct iwl_priv *priv, struct iwl_rx_queue *rxq) |
| { |
| iwl_write_direct32(priv, FH39_RCSR_RBD_BASE(0), rxq->dma_addr); |
| iwl_write_direct32(priv, FH39_RCSR_RPTR_ADDR(0), rxq->rb_stts_dma); |
| iwl_write_direct32(priv, FH39_RCSR_WPTR(0), 0); |
| iwl_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_read_direct32(priv, FH39_RSSR_CTRL); |
| |
| return 0; |
| } |
| |
| static int iwl3945_tx_reset(struct iwl_priv *priv) |
| { |
| |
| /* bypass mode */ |
| iwl_write_prph(priv, ALM_SCD_MODE_REG, 0x2); |
| |
| /* RA 0 is active */ |
| iwl_write_prph(priv, ALM_SCD_ARASTAT_REG, 0x01); |
| |
| /* all 6 fifo are active */ |
| iwl_write_prph(priv, ALM_SCD_TXFACT_REG, 0x3f); |
| |
| iwl_write_prph(priv, ALM_SCD_SBYP_MODE_1_REG, 0x010000); |
| iwl_write_prph(priv, ALM_SCD_SBYP_MODE_2_REG, 0x030002); |
| iwl_write_prph(priv, ALM_SCD_TXF4MF_REG, 0x000004); |
| iwl_write_prph(priv, ALM_SCD_TXF5MF_REG, 0x000005); |
| |
| iwl_write_direct32(priv, FH39_TSSR_CBB_BASE, |
| priv->_3945.shared_phys); |
| |
| iwl_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_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 == IWL_CMD_QUEUE_NUM) ? |
| TFD_CMD_SLOTS : TFD_TX_CMD_SLOTS; |
| rc = iwl_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_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_apm_init(priv); |
| |
| /* Clear APMG (NIC's internal power management) interrupts */ |
| iwl_write_prph(priv, APMG_RTC_INT_MSK_REG, 0x0); |
| iwl_write_prph(priv, APMG_RTC_INT_STT_REG, 0xFFFFFFFF); |
| |
| /* Reset radio chip */ |
| iwl_set_bits_prph(priv, APMG_PS_CTRL_REG, APMG_PS_CTRL_VAL_RESET_REQ); |
| udelay(5); |
| iwl_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_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_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_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_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_clear_bit(priv, CSR_HW_IF_CONFIG_REG, |
| CSR39_HW_IF_CONFIG_REG_BIT_BOARD_TYPE); |
| } |
| |
| if (eeprom->almgor_m_version <= 1) { |
| iwl_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_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); |
| |
| rc = priv->cfg->ops->lib->apm_ops.set_pwr_src(priv, IWL_PWR_SRC_VMAIN); |
| if (rc) |
| return rc; |
| |
| priv->cfg->ops->lib->apm_ops.config(priv); |
| |
| /* Allocate the RX queue, or reset if it is already allocated */ |
| if (!rxq->bd) { |
| rc = iwl_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_rx_queue_update_write_ptr(priv, rxq); |
| */ |
| |
| iwl_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 == IWL_CMD_QUEUE_NUM) |
| iwl_cmd_queue_free(priv); |
| else |
| iwl_tx_queue_free(priv, txq_id); |
| |
| /* free tx queue structure */ |
| iwl_free_txq_mem(priv); |
| } |
| |
| void iwl3945_hw_txq_ctx_stop(struct iwl_priv *priv) |
| { |
| int txq_id; |
| |
| /* stop SCD */ |
| iwl_write_prph(priv, ALM_SCD_MODE_REG, 0); |
| iwl_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_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 |
| |
| /** |
| * 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 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]); |
| |
| /* further limit to user's max power preference. |
| * FIXME: Other spectrum management power limitations do not |
| * seem to apply?? */ |
| 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->active_rxon.channel, |
| }; |
| |
| txpower.band = (priv->band == IEEE80211_BAND_5GHZ) ? 0 : 1; |
| ch_info = iwl_get_channel_info(priv, |
| priv->band, |
| le16_to_cpu(priv->active_rxon.channel)); |
| if (!ch_info) { |
| IWL_ERR(priv, |
| "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(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_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; |
| |
| /* 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)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; |
| 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 = 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; |
| } |
| |
| static int iwl3945_send_rxon_assoc(struct iwl_priv *priv) |
| { |
| 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_rxon_cmd *rxon1 = &priv->staging_rxon; |
| const struct iwl_rxon_cmd *rxon2 = &priv->active_rxon; |
| |
| 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 = priv->staging_rxon.flags; |
| rxon_assoc.filter_flags = priv->staging_rxon.filter_flags; |
| rxon_assoc.ofdm_basic_rates = priv->staging_rxon.ofdm_basic_rates; |
| rxon_assoc.cck_basic_rates = priv->staging_rxon.cck_basic_rates; |
| rxon_assoc.reserved = 0; |
| |
| rc = iwl_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_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. |
| */ |
| static int iwl3945_commit_rxon(struct iwl_priv *priv) |
| { |
| /* cast away the const for active_rxon in this function */ |
| struct iwl3945_rxon_cmd *active_rxon = (void *)&priv->active_rxon; |
| struct iwl3945_rxon_cmd *staging_rxon = (void *)&priv->staging_rxon; |
| int rc = 0; |
| bool new_assoc = |
| !!(priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK); |
| |
| if (!iwl_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_check_rxon_cmd(priv); |
| 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_full_rxon_required(priv)) { |
| rc = iwl_send_rxon_assoc(priv); |
| 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_is_associated(priv) && 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_send_cmd_pdu(priv, REPLY_RXON, |
| sizeof(struct iwl3945_rxon_cmd), |
| &priv->active_rxon); |
| |
| /* 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_clear_ucode_stations(priv, false); |
| iwl_restore_stations(priv); |
| } |
| |
| 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_set_rxon_hwcrypto(priv, !iwl3945_mod_params.sw_crypto); |
| |
| /* Apply the new configuration */ |
| rc = iwl_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_clear_ucode_stations(priv, false); |
| iwl_restore_stations(priv); |
| } |
| |
| /* 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 = priv->cfg->ops->lib->send_tx_power(priv); |
| 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 (!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 (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 = 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->_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_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_write_direct32(priv, FH39_CBCC_CTRL(txq_id), 0); |
| iwl_write_direct32(priv, FH39_CBCC_BASE(txq_id), 0); |
| |
| iwl_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_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); |
| } |
| |
| |
| /** |
| * 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_is_associated(priv)) { |
| |
| 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_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_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"); |
| mutex_unlock(&priv->mutex); |
| return -ENOMEM; |
| } |
| |
| /* Assign number of Usable TX queues */ |
| priv->hw_params.max_txq_num = priv->cfg->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->hw_params.bcast_sta_id = IWL3945_BROADCAST_ID; |
| |
| priv->hw_params.rx_wrt_ptr_reg = FH39_RSCSR_CHNL0_WPTR; |
| priv->hw_params.max_beacon_itrvl = IWL39_MAX_UCODE_BEACON_INTERVAL; |
| |
| 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->hw_params.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_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_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_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_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst); |
| iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata); |
| iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG, inst_len); |
| iwl_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_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_write_prph(priv, BSM_WR_MEM_SRC_REG, 0x0); |
| iwl_write_prph(priv, BSM_WR_MEM_DST_REG, |
| IWL39_RTC_INST_LOWER_BOUND); |
| iwl_write_prph(priv, BSM_WR_DWCOUNT_REG, len / sizeof(u32)); |
| |
| /* Load bootstrap code into instruction SRAM now, |
| * to prepare to load "initialize" uCode */ |
| iwl_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_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_write_prph(priv, BSM_WR_CTRL_REG, |
| BSM_WR_CTRL_REG_BIT_START_EN); |
| |
| return 0; |
| } |
| |
| #define IWL3945_UCODE_GET(item) \ |
| static u32 iwl3945_ucode_get_##item(const struct iwl_ucode_header *ucode,\ |
| u32 api_ver) \ |
| { \ |
| return le32_to_cpu(ucode->u.v1.item); \ |
| } |
| |
| static u32 iwl3945_ucode_get_header_size(u32 api_ver) |
| { |
| return UCODE_HEADER_SIZE(1); |
| } |
| static u32 iwl3945_ucode_get_build(const struct iwl_ucode_header *ucode, |
| u32 api_ver) |
| { |
| return 0; |
| } |
| static u8 *iwl3945_ucode_get_data(const struct iwl_ucode_header *ucode, |
| u32 api_ver) |
| { |
| return (u8 *) ucode->u.v1.data; |
| } |
| |
| IWL3945_UCODE_GET(inst_size); |
| IWL3945_UCODE_GET(data_size); |
| IWL3945_UCODE_GET(init_size); |
| IWL3945_UCODE_GET(init_data_size); |
| IWL3945_UCODE_GET(boot_size); |
| |
| static struct iwl_hcmd_ops iwl3945_hcmd = { |
| .rxon_assoc = iwl3945_send_rxon_assoc, |
| .commit_rxon = iwl3945_commit_rxon, |
| }; |
| |
| static struct iwl_ucode_ops iwl3945_ucode = { |
| .get_header_size = iwl3945_ucode_get_header_size, |
| .get_build = iwl3945_ucode_get_build, |
| .get_inst_size = iwl3945_ucode_get_inst_size, |
| .get_data_size = iwl3945_ucode_get_data_size, |
| .get_init_size = iwl3945_ucode_get_init_size, |
| .get_init_data_size = iwl3945_ucode_get_init_data_size, |
| .get_boot_size = iwl3945_ucode_get_boot_size, |
| .get_data = iwl3945_ucode_get_data, |
| }; |
| |
| 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, |
| .stop = iwl_apm_stop, |
| .config = iwl3945_nic_config, |
| .set_pwr_src = iwl3945_set_pwr_src, |
| }, |
| .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, |
| }, |
| .verify_signature = iwlcore_eeprom_verify_signature, |
| .acquire_semaphore = iwl3945_eeprom_acquire_semaphore, |
| .release_semaphore = iwl3945_eeprom_release_semaphore, |
| .query_addr = iwlcore_eeprom_query_addr, |
| }, |
| .send_tx_power = iwl3945_send_tx_power, |
| .is_valid_rtc_data_addr = iwl3945_hw_valid_rtc_data_addr, |
| .post_associate = iwl3945_post_associate, |
| .isr = iwl_isr_legacy, |
| .config_ap = iwl3945_config_ap, |
| .add_bcast_station = iwl3945_add_bcast_station, |
| }; |
| |
| static struct iwl_hcmd_utils_ops iwl3945_hcmd_utils = { |
| .get_hcmd_size = iwl3945_get_hcmd_size, |
| .build_addsta_hcmd = iwl3945_build_addsta_hcmd, |
| .rts_tx_cmd_flag = iwlcore_rts_tx_cmd_flag, |
| }; |
| |
| static const struct iwl_ops iwl3945_ops = { |
| .ucode = &iwl3945_ucode, |
| .lib = &iwl3945_lib, |
| .hcmd = &iwl3945_hcmd, |
| .utils = &iwl3945_hcmd_utils, |
| .led = &iwl3945_led_ops, |
| }; |
| |
| 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_size = IWL3945_EEPROM_IMG_SIZE, |
| .eeprom_ver = EEPROM_3945_EEPROM_VERSION, |
| .ops = &iwl3945_ops, |
| .num_of_queues = IWL39_NUM_QUEUES, |
| .mod_params = &iwl3945_mod_params, |
| .pll_cfg_val = CSR39_ANA_PLL_CFG_VAL, |
| .set_l0s = false, |
| .use_bsm = true, |
| .use_isr_legacy = true, |
| .ht_greenfield_support = false, |
| .led_compensation = 64, |
| .broken_powersave = true, |
| .plcp_delta_threshold = IWL_MAX_PLCP_ERR_THRESHOLD_DEF, |
| .monitor_recover_period = IWL_MONITORING_PERIOD, |
| }; |
| |
| 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_size = IWL3945_EEPROM_IMG_SIZE, |
| .eeprom_ver = EEPROM_3945_EEPROM_VERSION, |
| .ops = &iwl3945_ops, |
| .num_of_queues = IWL39_NUM_QUEUES, |
| .mod_params = &iwl3945_mod_params, |
| .use_isr_legacy = true, |
| .ht_greenfield_support = false, |
| .led_compensation = 64, |
| .broken_powersave = true, |
| .plcp_delta_threshold = IWL_MAX_PLCP_ERR_THRESHOLD_DEF, |
| .monitor_recover_period = IWL_MONITORING_PERIOD, |
| }; |
| |
| 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); |