diff options
Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl3945-base.c')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl3945-base.c | 126 |
1 files changed, 47 insertions, 79 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl3945-base.c b/drivers/net/wireless/iwlwifi/iwl3945-base.c index e8d19804718..ba5146ffdf4 100644 --- a/drivers/net/wireless/iwlwifi/iwl3945-base.c +++ b/drivers/net/wireless/iwlwifi/iwl3945-base.c @@ -27,16 +27,6 @@ * *****************************************************************************/ -/* - * NOTE: This file (iwl-base.c) is used to build to multiple hardware targets - * by defining IWL to either 3945 or 4965. The Makefile used when building - * the base targets will create base-3945.o and base-4965.o - * - * The eventual goal is to move as many of the #if IWL / #endif blocks out of - * this file and into the hardware specific implementation files (iwl-XXXX.c) - * and leave only the common (non #ifdef sprinkled) code in this file - */ - #include <linux/kernel.h> #include <linux/module.h> #include <linux/version.h> @@ -75,9 +65,9 @@ static int iwl3945_tx_queue_update_write_ptr(struct iwl3945_priv *priv, /* module parameters */ static int iwl3945_param_disable_hw_scan; static int iwl3945_param_debug; -static int iwl3945_param_disable; /* def: enable radio */ -static int iwl3945_param_antenna; /* def: 0 = both antennas (use diversity) */ -int iwl3945_param_hwcrypto; /* def: using software encryption */ +static int iwl3945_param_disable; /* def: enable radio */ +static int iwl3945_param_antenna; /* def: 0 = both antennas (use diversity) */ +int iwl3945_param_hwcrypto; /* def: using software encryption */ static int iwl3945_param_qos_enable = 1; int iwl3945_param_queues_num = IWL_MAX_NUM_QUEUES; @@ -396,11 +386,7 @@ void iwl3945_tx_queue_free(struct iwl3945_priv *priv, struct iwl3945_tx_queue *t const u8 iwl3945_broadcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }; /*************** STATION TABLE MANAGEMENT **** - * - * NOTE: This needs to be overhauled to better synchronize between - * how the iwl-4965.c is using iwl3945_hw_find_station vs. iwl-3945.c - * - * mac80211 should also be examined to determine if sta_info is duplicating + * mac80211 should be examined to determine if sta_info is duplicating * the functionality provided here */ @@ -956,12 +942,12 @@ static int iwl3945_check_rxon_cmd(struct iwl3945_rxon_cmd *rxon) } /** - * iwl3945_full_rxon_required - determine if RXON_ASSOC can be used in RXON commit + * iwl3945_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed * @priv: staging_rxon is compared to active_rxon * - * If the RXON structure is changing sufficient to require a new - * tune or to clear and reset the RXON_FILTER_ASSOC_MSK then return 1 - * to indicate a new tune is required. + * If the RXON structure is changing enough to require a new tune, + * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that + * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required. */ static int iwl3945_full_rxon_required(struct iwl3945_priv *priv) { @@ -1235,7 +1221,7 @@ static int iwl3945_card_state_sync_callback(struct iwl3945_priv *priv, /* * CARD_STATE_CMD * - * Use: Sets the internal card state to enable, disable, or halt + * Use: Sets the device's internal card state to enable, disable, or halt * * When in the 'enable' state the card operates as normal. * When in the 'disable' state, the card enters into a low power mode. @@ -1589,14 +1575,9 @@ int iwl3945_eeprom_init(struct iwl3945_priv *priv) /** * iwl3945_report_frame - dump frame to syslog during debug sessions * - * hack this function to show different aspects of received frames, + * 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. - * - * TODO: ieee80211_hdr stuff is common to 3945 and 4965, so frame type - * info output is okay, but some of this stuff (e.g. iwl3945_rx_frame_stats) - * is 3945-specific and gives bad output for 4965. Need to split the - * functionality, keep common stuff here. */ void iwl3945_report_frame(struct iwl3945_priv *priv, struct iwl3945_rx_packet *pkt, @@ -3775,13 +3756,10 @@ static void iwl3945_setup_rx_handlers(struct iwl3945_priv *priv) iwl3945_rx_pm_debug_statistics_notif; priv->rx_handlers[BEACON_NOTIFICATION] = iwl3945_rx_beacon_notif; - /* NOTE: iwl3945_rx_statistics is different based on whether - * the build is for the 3945 or the 4965. See the - * corresponding implementation in iwl-XXXX.c - * - * The same handler is used for both the REPLY to a - * discrete statistics request from the host as well as - * for the periodic statistics notification from the uCode + /* + * The same handler is used for both the REPLY to a discrete + * statistics request from the host as well as for the periodic + * statistics notifications (after received beacons) from the uCode. */ priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl3945_hw_rx_statistics; priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl3945_hw_rx_statistics; @@ -3795,7 +3773,7 @@ static void iwl3945_setup_rx_handlers(struct iwl3945_priv *priv) priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl3945_rx_card_state_notif; priv->rx_handlers[REPLY_TX] = iwl3945_rx_reply_tx; - /* Setup hardware specific Rx handlers */ + /* Set up hardware specific Rx handlers */ iwl3945_hw_rx_handler_setup(priv); } @@ -3867,10 +3845,10 @@ static void iwl3945_tx_cmd_complete(struct iwl3945_priv *priv, * The queue is empty (no good data) if WRITE = READ - 1, and is full if * WRITE = READ. * - * During initialization the host sets up the READ queue position to the first + * During initialization, the host sets up the READ queue position to the first * INDEX position, and WRITE to the last (READ - 1 wrapped) * - * When the firmware places a packet in a buffer it will advance the READ index + * When the firmware places a packet in a buffer, it will advance the READ index * and fire the RX interrupt. The driver can then query the READ index and * process as many packets as possible, moving the WRITE index forward as it * resets the Rx queue buffers with new memory. @@ -3892,16 +3870,16 @@ static void iwl3945_tx_cmd_complete(struct iwl3945_priv *priv, * * Driver sequence: * - * iwl3945_rx_queue_alloc() Allocates rx_free - * iwl3945_rx_replenish() Replenishes rx_free list from rx_used, and calls + * iwl3945_rx_queue_alloc() Allocates rx_free + * iwl3945_rx_replenish() Replenishes rx_free list from rx_used, and calls * iwl3945_rx_queue_restock - * iwl3945_rx_queue_restock() Moves available buffers from rx_free into Rx + * iwl3945_rx_queue_restock() Moves available buffers from rx_free into Rx * queue, updates firmware pointers, and updates * the WRITE index. If insufficient rx_free buffers * are available, schedules iwl3945_rx_replenish * * -- enable interrupts -- - * ISR - iwl3945_rx() Detach iwl3945_rx_mem_buffers from pool up to the + * ISR - iwl3945_rx() Detach iwl3945_rx_mem_buffers from pool up to the * READ INDEX, detaching the SKB from the pool. * Moves the packet buffer from queue to rx_used. * Calls iwl3945_rx_queue_restock to refill any empty @@ -3927,12 +3905,6 @@ static int iwl3945_rx_queue_space(const struct iwl3945_rx_queue *q) /** * iwl3945_rx_queue_update_write_ptr - Update the write pointer for the RX queue - * - * NOTE: This function has 3945 and 4965 specific code sections - * but is declared in base due to the majority of the - * implementation being the same (only a numeric constant is - * different) - * */ int iwl3945_rx_queue_update_write_ptr(struct iwl3945_priv *priv, struct iwl3945_rx_queue *q) { @@ -3973,9 +3945,7 @@ int iwl3945_rx_queue_update_write_ptr(struct iwl3945_priv *priv, struct iwl3945_ } /** - * iwl3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer pointer. - * - * NOTE: This function has 3945 and 4965 specific code paths in it. + * iwl3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr */ static inline __le32 iwl3945_dma_addr2rbd_ptr(struct iwl3945_priv *priv, dma_addr_t dma_addr) @@ -3986,9 +3956,9 @@ static inline __le32 iwl3945_dma_addr2rbd_ptr(struct iwl3945_priv *priv, /** * iwl3945_rx_queue_restock - refill RX queue from pre-allocated pool * - * If there are slots in the RX queue that need to be restocked, + * If there are slots in the RX queue that need to be restocked, * and we have free pre-allocated buffers, fill the ranks as much - * as we can pulling from rx_free. + * as we can, pulling from rx_free. * * This moves the 'write' index forward to catch up with 'processed', and * also updates the memory address in the firmware to reference the new @@ -4080,7 +4050,7 @@ void iwl3945_rx_replenish(void *data) } /* Assumes that the skb field of the buffers in 'pool' is kept accurate. - * If an SKB has been detached, the POOL needs to have it's SKB set to NULL + * If an SKB has been detached, the POOL needs to have its SKB set to NULL * This free routine walks the list of POOL entries and if SKB is set to * non NULL it is unmapped and freed */ @@ -4232,7 +4202,7 @@ int iwl3945_calc_sig_qual(int rssi_dbm, int noise_dbm) } /** - * iwl3945_rx_handle - Main entry function for receiving responses from the uCode + * iwl3945_rx_handle - Main entry function for receiving responses from uCode * * Uses the priv->rx_handlers callback function array to invoke * the appropriate handlers, including command responses, @@ -4257,7 +4227,7 @@ static void iwl3945_rx_handle(struct iwl3945_priv *priv) while (i != r) { rxb = rxq->queue[i]; - /* If an RXB doesn't have a queue slot associated with it + /* If an RXB doesn't have a Rx queue slot associated with it, * then a bug has been introduced in the queue refilling * routines -- catch it here */ BUG_ON(rxb == NULL); @@ -4296,8 +4266,8 @@ static void iwl3945_rx_handle(struct iwl3945_priv *priv) } if (reclaim) { - /* Invoke any callbacks, transfer the skb to caller, - * and fire off the (possibly) blocking iwl3945_send_cmd() + /* Invoke any callbacks, transfer the skb to caller, and + * fire off the (possibly) blocking iwl3945_send_cmd() * as we reclaim the driver command queue */ if (rxb && rxb->skb) iwl3945_tx_cmd_complete(priv, rxb); @@ -4671,7 +4641,8 @@ static void iwl3945_irq_tasklet(struct iwl3945_priv *priv) #ifdef CONFIG_IWL3945_DEBUG if (iwl3945_debug_level & IWL_DL_ISR) { - inta_mask = iwl3945_read32(priv, CSR_INT_MASK); /* just for debug */ + /* just for debug */ + inta_mask = iwl3945_read32(priv, CSR_INT_MASK); IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n", inta, inta_mask, inta_fh); } @@ -4901,11 +4872,11 @@ static const u8 iwl3945_eeprom_band_1[14] = { }; /* 5.2 GHz bands */ -static const u8 iwl3945_eeprom_band_2[] = { +static const u8 iwl3945_eeprom_band_2[] = { /* 4915-5080MHz */ 183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16 }; -static const u8 iwl3945_eeprom_band_3[] = { /* 5205-5320MHz */ +static const u8 iwl3945_eeprom_band_3[] = { /* 5170-5320MHz */ 34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64 }; @@ -4929,7 +4900,7 @@ static void iwl3945_init_band_reference(const struct iwl3945_priv *priv, int ban *eeprom_ch_info = priv->eeprom.band_1_channels; *eeprom_ch_index = iwl3945_eeprom_band_1; break; - case 2: /* 5.2GHz band */ + case 2: /* 4.9GHz band */ *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_2); *eeprom_ch_info = priv->eeprom.band_2_channels; *eeprom_ch_index = iwl3945_eeprom_band_2; @@ -4939,12 +4910,12 @@ static void iwl3945_init_band_reference(const struct iwl3945_priv *priv, int ban *eeprom_ch_info = priv->eeprom.band_3_channels; *eeprom_ch_index = iwl3945_eeprom_band_3; break; - case 4: /* 5.2GHz band */ + case 4: /* 5.5GHz band */ *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_4); *eeprom_ch_info = priv->eeprom.band_4_channels; *eeprom_ch_index = iwl3945_eeprom_band_4; break; - case 5: /* 5.2GHz band */ + case 5: /* 5.7GHz band */ *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_5); *eeprom_ch_info = priv->eeprom.band_5_channels; *eeprom_ch_index = iwl3945_eeprom_band_5; @@ -5207,7 +5178,7 @@ static int iwl3945_get_channels_for_scan(struct iwl3945_priv *priv, int phymode, scan_ch->active_dwell = cpu_to_le16(active_dwell); scan_ch->passive_dwell = cpu_to_le16(passive_dwell); - /* Set power levels to defaults */ + /* Set txpower levels to defaults */ scan_ch->tpc.dsp_atten = 110; /* scan_pwr_info->tpc.dsp_atten; */ @@ -5217,8 +5188,8 @@ static int iwl3945_get_channels_for_scan(struct iwl3945_priv *priv, int phymode, else { scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3)); /* NOTE: if we were doing 6Mb OFDM for scans we'd use - * power level - scan_ch->tpc.tx_gain = ((1<<5) | (2 << 3)) | 3; + * power level: + * scan_ch->tpc.tx_gain = ((1<<5) | (2 << 3)) | 3; */ } @@ -5602,8 +5573,9 @@ static int iwl3945_verify_ucode(struct iwl3945_priv *priv) IWL_ERROR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n"); - /* Show first several data entries in instruction SRAM. - * Selection of bootstrap image is arbitrary. */ + /* Since nothing seems to match, show first several data entries in + * instruction SRAM, so maybe visual inspection will give a clue. + * Selection of bootstrap image (vs. other images) is arbitrary. */ image = (__le32 *)priv->ucode_boot.v_addr; len = priv->ucode_boot.len; rc = iwl3945_verify_inst_full(priv, image, len); @@ -5695,7 +5667,7 @@ static int iwl3945_load_bsm(struct iwl3945_priv *priv) return -EINVAL; /* Tell bootstrap uCode where to find the "Initialize" uCode - * in host DRAM ... bits 31:0 for 3945, bits 35:4 for 4965. + * 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. */ @@ -6020,12 +5992,8 @@ static int iwl3945_set_ucode_ptrs(struct iwl3945_priv *priv) * * Called after REPLY_ALIVE notification received from "initialize" uCode. * - * The 4965 "initialize" ALIVE reply contains calibration data for: - * Voltage, temperature, and MIMO tx gain correction, now stored in priv - * (3945 does not contain this data). - * * Tell "initialize" uCode to go ahead and load the runtime uCode. -*/ + */ static void iwl3945_init_alive_start(struct iwl3945_priv *priv) { /* Check alive response for "valid" sign from uCode */ @@ -6120,7 +6088,7 @@ static void iwl3945_alive_start(struct iwl3945_priv *priv) } else set_bit(STATUS_RF_KILL_HW, &priv->status); - /* After the ALIVE response, we can process host commands */ + /* After the ALIVE response, we can send commands to 3945 uCode */ set_bit(STATUS_ALIVE, &priv->status); /* Clear out the uCode error bit if it is set */ @@ -6177,7 +6145,7 @@ static void iwl3945_alive_start(struct iwl3945_priv *priv) memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN); } - /* Configure BT coexistence */ + /* Configure Bluetooth device coexistence support */ iwl3945_send_bt_config(priv); /* Configure the adapter for unassociated operation */ @@ -6365,7 +6333,7 @@ static int __iwl3945_up(struct iwl3945_priv *priv) /* start card; "initialize" will load runtime ucode */ iwl3945_nic_start(priv); - /* MAC Address location in EEPROM same for 3945/4965 */ + /* MAC Address location in EEPROM is same for 3945/4965 */ get_eeprom_mac(priv, priv->mac_addr); IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr)); |