| /****************************************************************************** |
| * |
| * GPL LICENSE SUMMARY |
| * |
| * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of version 2 of the GNU General Public License as |
| * published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it will be useful, but |
| * WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, |
| * USA |
| * |
| * The full GNU General Public License is included in this distribution |
| * in the file called LICENSE.GPL. |
| * |
| * 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/etherdevice.h> |
| #include <linux/sched.h> |
| #include <linux/slab.h> |
| #include <linux/types.h> |
| #include <linux/lockdep.h> |
| #include <linux/init.h> |
| #include <linux/pci.h> |
| #include <linux/dma-mapping.h> |
| #include <linux/delay.h> |
| #include <linux/skbuff.h> |
| #include <net/mac80211.h> |
| |
| #include "common.h" |
| |
| int |
| _il_poll_bit(struct il_priv *il, u32 addr, u32 bits, u32 mask, int timeout) |
| { |
| const int interval = 10; /* microseconds */ |
| int t = 0; |
| |
| do { |
| if ((_il_rd(il, addr) & mask) == (bits & mask)) |
| return t; |
| udelay(interval); |
| t += interval; |
| } while (t < timeout); |
| |
| return -ETIMEDOUT; |
| } |
| EXPORT_SYMBOL(_il_poll_bit); |
| |
| void |
| il_set_bit(struct il_priv *p, u32 r, u32 m) |
| { |
| unsigned long reg_flags; |
| |
| spin_lock_irqsave(&p->reg_lock, reg_flags); |
| _il_set_bit(p, r, m); |
| spin_unlock_irqrestore(&p->reg_lock, reg_flags); |
| } |
| EXPORT_SYMBOL(il_set_bit); |
| |
| void |
| il_clear_bit(struct il_priv *p, u32 r, u32 m) |
| { |
| unsigned long reg_flags; |
| |
| spin_lock_irqsave(&p->reg_lock, reg_flags); |
| _il_clear_bit(p, r, m); |
| spin_unlock_irqrestore(&p->reg_lock, reg_flags); |
| } |
| EXPORT_SYMBOL(il_clear_bit); |
| |
| bool |
| _il_grab_nic_access(struct il_priv *il) |
| { |
| int ret; |
| u32 val; |
| |
| /* this bit wakes up the NIC */ |
| _il_set_bit(il, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ); |
| |
| /* |
| * These bits say the device is running, and should keep running for |
| * at least a short while (at least as long as MAC_ACCESS_REQ stays 1), |
| * but they do not indicate that embedded SRAM is restored yet; |
| * 3945 and 4965 have volatile SRAM, and must save/restore contents |
| * to/from host DRAM when sleeping/waking for power-saving. |
| * Each direction takes approximately 1/4 millisecond; with this |
| * overhead, it's a good idea to grab and hold MAC_ACCESS_REQUEST if a |
| * series of register accesses are expected (e.g. reading Event Log), |
| * to keep device from sleeping. |
| * |
| * CSR_UCODE_DRV_GP1 register bit MAC_SLEEP == 0 indicates that |
| * SRAM is okay/restored. We don't check that here because this call |
| * is just for hardware register access; but GP1 MAC_SLEEP check is a |
| * good idea before accessing 3945/4965 SRAM (e.g. reading Event Log). |
| * |
| */ |
| ret = |
| _il_poll_bit(il, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_VAL_MAC_ACCESS_EN, |
| (CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY | |
| CSR_GP_CNTRL_REG_FLAG_GOING_TO_SLEEP), 15000); |
| if (unlikely(ret < 0)) { |
| val = _il_rd(il, CSR_GP_CNTRL); |
| WARN_ONCE(1, "Timeout waiting for ucode processor access " |
| "(CSR_GP_CNTRL 0x%08x)\n", val); |
| _il_wr(il, CSR_RESET, CSR_RESET_REG_FLAG_FORCE_NMI); |
| return false; |
| } |
| |
| return true; |
| } |
| EXPORT_SYMBOL_GPL(_il_grab_nic_access); |
| |
| int |
| il_poll_bit(struct il_priv *il, u32 addr, u32 mask, int timeout) |
| { |
| const int interval = 10; /* microseconds */ |
| int t = 0; |
| |
| do { |
| if ((il_rd(il, addr) & mask) == mask) |
| return t; |
| udelay(interval); |
| t += interval; |
| } while (t < timeout); |
| |
| return -ETIMEDOUT; |
| } |
| EXPORT_SYMBOL(il_poll_bit); |
| |
| u32 |
| il_rd_prph(struct il_priv *il, u32 reg) |
| { |
| unsigned long reg_flags; |
| u32 val; |
| |
| spin_lock_irqsave(&il->reg_lock, reg_flags); |
| _il_grab_nic_access(il); |
| val = _il_rd_prph(il, reg); |
| _il_release_nic_access(il); |
| spin_unlock_irqrestore(&il->reg_lock, reg_flags); |
| return val; |
| } |
| EXPORT_SYMBOL(il_rd_prph); |
| |
| void |
| il_wr_prph(struct il_priv *il, u32 addr, u32 val) |
| { |
| unsigned long reg_flags; |
| |
| spin_lock_irqsave(&il->reg_lock, reg_flags); |
| if (likely(_il_grab_nic_access(il))) { |
| _il_wr_prph(il, addr, val); |
| _il_release_nic_access(il); |
| } |
| spin_unlock_irqrestore(&il->reg_lock, reg_flags); |
| } |
| EXPORT_SYMBOL(il_wr_prph); |
| |
| u32 |
| il_read_targ_mem(struct il_priv *il, u32 addr) |
| { |
| unsigned long reg_flags; |
| u32 value; |
| |
| spin_lock_irqsave(&il->reg_lock, reg_flags); |
| _il_grab_nic_access(il); |
| |
| _il_wr(il, HBUS_TARG_MEM_RADDR, addr); |
| value = _il_rd(il, HBUS_TARG_MEM_RDAT); |
| |
| _il_release_nic_access(il); |
| spin_unlock_irqrestore(&il->reg_lock, reg_flags); |
| return value; |
| } |
| EXPORT_SYMBOL(il_read_targ_mem); |
| |
| void |
| il_write_targ_mem(struct il_priv *il, u32 addr, u32 val) |
| { |
| unsigned long reg_flags; |
| |
| spin_lock_irqsave(&il->reg_lock, reg_flags); |
| if (likely(_il_grab_nic_access(il))) { |
| _il_wr(il, HBUS_TARG_MEM_WADDR, addr); |
| _il_wr(il, HBUS_TARG_MEM_WDAT, val); |
| _il_release_nic_access(il); |
| } |
| spin_unlock_irqrestore(&il->reg_lock, reg_flags); |
| } |
| EXPORT_SYMBOL(il_write_targ_mem); |
| |
| const char * |
| il_get_cmd_string(u8 cmd) |
| { |
| switch (cmd) { |
| IL_CMD(N_ALIVE); |
| IL_CMD(N_ERROR); |
| IL_CMD(C_RXON); |
| IL_CMD(C_RXON_ASSOC); |
| IL_CMD(C_QOS_PARAM); |
| IL_CMD(C_RXON_TIMING); |
| IL_CMD(C_ADD_STA); |
| IL_CMD(C_REM_STA); |
| IL_CMD(C_WEPKEY); |
| IL_CMD(N_3945_RX); |
| IL_CMD(C_TX); |
| IL_CMD(C_RATE_SCALE); |
| IL_CMD(C_LEDS); |
| IL_CMD(C_TX_LINK_QUALITY_CMD); |
| IL_CMD(C_CHANNEL_SWITCH); |
| IL_CMD(N_CHANNEL_SWITCH); |
| IL_CMD(C_SPECTRUM_MEASUREMENT); |
| IL_CMD(N_SPECTRUM_MEASUREMENT); |
| IL_CMD(C_POWER_TBL); |
| IL_CMD(N_PM_SLEEP); |
| IL_CMD(N_PM_DEBUG_STATS); |
| IL_CMD(C_SCAN); |
| IL_CMD(C_SCAN_ABORT); |
| IL_CMD(N_SCAN_START); |
| IL_CMD(N_SCAN_RESULTS); |
| IL_CMD(N_SCAN_COMPLETE); |
| IL_CMD(N_BEACON); |
| IL_CMD(C_TX_BEACON); |
| IL_CMD(C_TX_PWR_TBL); |
| IL_CMD(C_BT_CONFIG); |
| IL_CMD(C_STATS); |
| IL_CMD(N_STATS); |
| IL_CMD(N_CARD_STATE); |
| IL_CMD(N_MISSED_BEACONS); |
| IL_CMD(C_CT_KILL_CONFIG); |
| IL_CMD(C_SENSITIVITY); |
| IL_CMD(C_PHY_CALIBRATION); |
| IL_CMD(N_RX_PHY); |
| IL_CMD(N_RX_MPDU); |
| IL_CMD(N_RX); |
| IL_CMD(N_COMPRESSED_BA); |
| default: |
| return "UNKNOWN"; |
| |
| } |
| } |
| EXPORT_SYMBOL(il_get_cmd_string); |
| |
| #define HOST_COMPLETE_TIMEOUT (HZ / 2) |
| |
| static void |
| il_generic_cmd_callback(struct il_priv *il, struct il_device_cmd *cmd, |
| struct il_rx_pkt *pkt) |
| { |
| if (pkt->hdr.flags & IL_CMD_FAILED_MSK) { |
| IL_ERR("Bad return from %s (0x%08X)\n", |
| il_get_cmd_string(cmd->hdr.cmd), pkt->hdr.flags); |
| return; |
| } |
| #ifdef CONFIG_IWLEGACY_DEBUG |
| switch (cmd->hdr.cmd) { |
| case C_TX_LINK_QUALITY_CMD: |
| case C_SENSITIVITY: |
| D_HC_DUMP("back from %s (0x%08X)\n", |
| il_get_cmd_string(cmd->hdr.cmd), pkt->hdr.flags); |
| break; |
| default: |
| D_HC("back from %s (0x%08X)\n", il_get_cmd_string(cmd->hdr.cmd), |
| pkt->hdr.flags); |
| } |
| #endif |
| } |
| |
| static int |
| il_send_cmd_async(struct il_priv *il, struct il_host_cmd *cmd) |
| { |
| int ret; |
| |
| BUG_ON(!(cmd->flags & CMD_ASYNC)); |
| |
| /* An asynchronous command can not expect an SKB to be set. */ |
| BUG_ON(cmd->flags & CMD_WANT_SKB); |
| |
| /* Assign a generic callback if one is not provided */ |
| if (!cmd->callback) |
| cmd->callback = il_generic_cmd_callback; |
| |
| if (test_bit(S_EXIT_PENDING, &il->status)) |
| return -EBUSY; |
| |
| ret = il_enqueue_hcmd(il, cmd); |
| if (ret < 0) { |
| IL_ERR("Error sending %s: enqueue_hcmd failed: %d\n", |
| il_get_cmd_string(cmd->id), ret); |
| return ret; |
| } |
| return 0; |
| } |
| |
| int |
| il_send_cmd_sync(struct il_priv *il, struct il_host_cmd *cmd) |
| { |
| int cmd_idx; |
| int ret; |
| |
| lockdep_assert_held(&il->mutex); |
| |
| BUG_ON(cmd->flags & CMD_ASYNC); |
| |
| /* A synchronous command can not have a callback set. */ |
| BUG_ON(cmd->callback); |
| |
| D_INFO("Attempting to send sync command %s\n", |
| il_get_cmd_string(cmd->id)); |
| |
| set_bit(S_HCMD_ACTIVE, &il->status); |
| D_INFO("Setting HCMD_ACTIVE for command %s\n", |
| il_get_cmd_string(cmd->id)); |
| |
| cmd_idx = il_enqueue_hcmd(il, cmd); |
| if (cmd_idx < 0) { |
| ret = cmd_idx; |
| IL_ERR("Error sending %s: enqueue_hcmd failed: %d\n", |
| il_get_cmd_string(cmd->id), ret); |
| goto out; |
| } |
| |
| ret = wait_event_timeout(il->wait_command_queue, |
| !test_bit(S_HCMD_ACTIVE, &il->status), |
| HOST_COMPLETE_TIMEOUT); |
| if (!ret) { |
| if (test_bit(S_HCMD_ACTIVE, &il->status)) { |
| IL_ERR("Error sending %s: time out after %dms.\n", |
| il_get_cmd_string(cmd->id), |
| jiffies_to_msecs(HOST_COMPLETE_TIMEOUT)); |
| |
| clear_bit(S_HCMD_ACTIVE, &il->status); |
| D_INFO("Clearing HCMD_ACTIVE for command %s\n", |
| il_get_cmd_string(cmd->id)); |
| ret = -ETIMEDOUT; |
| goto cancel; |
| } |
| } |
| |
| if (test_bit(S_RFKILL, &il->status)) { |
| IL_ERR("Command %s aborted: RF KILL Switch\n", |
| il_get_cmd_string(cmd->id)); |
| ret = -ECANCELED; |
| goto fail; |
| } |
| if (test_bit(S_FW_ERROR, &il->status)) { |
| IL_ERR("Command %s failed: FW Error\n", |
| il_get_cmd_string(cmd->id)); |
| ret = -EIO; |
| goto fail; |
| } |
| if ((cmd->flags & CMD_WANT_SKB) && !cmd->reply_page) { |
| IL_ERR("Error: Response NULL in '%s'\n", |
| il_get_cmd_string(cmd->id)); |
| ret = -EIO; |
| goto cancel; |
| } |
| |
| ret = 0; |
| goto out; |
| |
| cancel: |
| if (cmd->flags & CMD_WANT_SKB) { |
| /* |
| * Cancel the CMD_WANT_SKB flag for the cmd in the |
| * TX cmd queue. Otherwise in case the cmd comes |
| * in later, it will possibly set an invalid |
| * address (cmd->meta.source). |
| */ |
| il->txq[il->cmd_queue].meta[cmd_idx].flags &= ~CMD_WANT_SKB; |
| } |
| fail: |
| if (cmd->reply_page) { |
| il_free_pages(il, cmd->reply_page); |
| cmd->reply_page = 0; |
| } |
| out: |
| return ret; |
| } |
| EXPORT_SYMBOL(il_send_cmd_sync); |
| |
| int |
| il_send_cmd(struct il_priv *il, struct il_host_cmd *cmd) |
| { |
| if (cmd->flags & CMD_ASYNC) |
| return il_send_cmd_async(il, cmd); |
| |
| return il_send_cmd_sync(il, cmd); |
| } |
| EXPORT_SYMBOL(il_send_cmd); |
| |
| int |
| il_send_cmd_pdu(struct il_priv *il, u8 id, u16 len, const void *data) |
| { |
| struct il_host_cmd cmd = { |
| .id = id, |
| .len = len, |
| .data = data, |
| }; |
| |
| return il_send_cmd_sync(il, &cmd); |
| } |
| EXPORT_SYMBOL(il_send_cmd_pdu); |
| |
| int |
| il_send_cmd_pdu_async(struct il_priv *il, u8 id, u16 len, const void *data, |
| void (*callback) (struct il_priv *il, |
| struct il_device_cmd *cmd, |
| struct il_rx_pkt *pkt)) |
| { |
| struct il_host_cmd cmd = { |
| .id = id, |
| .len = len, |
| .data = data, |
| }; |
| |
| cmd.flags |= CMD_ASYNC; |
| cmd.callback = callback; |
| |
| return il_send_cmd_async(il, &cmd); |
| } |
| EXPORT_SYMBOL(il_send_cmd_pdu_async); |
| |
| /* default: IL_LED_BLINK(0) using blinking idx table */ |
| static int led_mode; |
| module_param(led_mode, int, S_IRUGO); |
| MODULE_PARM_DESC(led_mode, |
| "0=system default, " "1=On(RF On)/Off(RF Off), 2=blinking"); |
| |
| /* Throughput OFF time(ms) ON time (ms) |
| * >300 25 25 |
| * >200 to 300 40 40 |
| * >100 to 200 55 55 |
| * >70 to 100 65 65 |
| * >50 to 70 75 75 |
| * >20 to 50 85 85 |
| * >10 to 20 95 95 |
| * >5 to 10 110 110 |
| * >1 to 5 130 130 |
| * >0 to 1 167 167 |
| * <=0 SOLID ON |
| */ |
| static const struct ieee80211_tpt_blink il_blink[] = { |
| {.throughput = 0, .blink_time = 334}, |
| {.throughput = 1 * 1024 - 1, .blink_time = 260}, |
| {.throughput = 5 * 1024 - 1, .blink_time = 220}, |
| {.throughput = 10 * 1024 - 1, .blink_time = 190}, |
| {.throughput = 20 * 1024 - 1, .blink_time = 170}, |
| {.throughput = 50 * 1024 - 1, .blink_time = 150}, |
| {.throughput = 70 * 1024 - 1, .blink_time = 130}, |
| {.throughput = 100 * 1024 - 1, .blink_time = 110}, |
| {.throughput = 200 * 1024 - 1, .blink_time = 80}, |
| {.throughput = 300 * 1024 - 1, .blink_time = 50}, |
| }; |
| |
| /* |
| * Adjust led blink rate to compensate on a MAC Clock difference on every HW |
| * Led blink rate analysis showed an average deviation of 0% on 3945, |
| * 5% on 4965 HW. |
| * Need to compensate on the led on/off time per HW according to the deviation |
| * to achieve the desired led frequency |
| * The calculation is: (100-averageDeviation)/100 * blinkTime |
| * For code efficiency the calculation will be: |
| * compensation = (100 - averageDeviation) * 64 / 100 |
| * NewBlinkTime = (compensation * BlinkTime) / 64 |
| */ |
| static inline u8 |
| il_blink_compensation(struct il_priv *il, u8 time, u16 compensation) |
| { |
| if (!compensation) { |
| IL_ERR("undefined blink compensation: " |
| "use pre-defined blinking time\n"); |
| return time; |
| } |
| |
| return (u8) ((time * compensation) >> 6); |
| } |
| |
| /* Set led pattern command */ |
| static int |
| il_led_cmd(struct il_priv *il, unsigned long on, unsigned long off) |
| { |
| struct il_led_cmd led_cmd = { |
| .id = IL_LED_LINK, |
| .interval = IL_DEF_LED_INTRVL |
| }; |
| int ret; |
| |
| if (!test_bit(S_READY, &il->status)) |
| return -EBUSY; |
| |
| if (il->blink_on == on && il->blink_off == off) |
| return 0; |
| |
| if (off == 0) { |
| /* led is SOLID_ON */ |
| on = IL_LED_SOLID; |
| } |
| |
| D_LED("Led blink time compensation=%u\n", |
| il->cfg->led_compensation); |
| led_cmd.on = |
| il_blink_compensation(il, on, |
| il->cfg->led_compensation); |
| led_cmd.off = |
| il_blink_compensation(il, off, |
| il->cfg->led_compensation); |
| |
| ret = il->ops->send_led_cmd(il, &led_cmd); |
| if (!ret) { |
| il->blink_on = on; |
| il->blink_off = off; |
| } |
| return ret; |
| } |
| |
| static void |
| il_led_brightness_set(struct led_classdev *led_cdev, |
| enum led_brightness brightness) |
| { |
| struct il_priv *il = container_of(led_cdev, struct il_priv, led); |
| unsigned long on = 0; |
| |
| if (brightness > 0) |
| on = IL_LED_SOLID; |
| |
| il_led_cmd(il, on, 0); |
| } |
| |
| static int |
| il_led_blink_set(struct led_classdev *led_cdev, unsigned long *delay_on, |
| unsigned long *delay_off) |
| { |
| struct il_priv *il = container_of(led_cdev, struct il_priv, led); |
| |
| return il_led_cmd(il, *delay_on, *delay_off); |
| } |
| |
| void |
| il_leds_init(struct il_priv *il) |
| { |
| int mode = led_mode; |
| int ret; |
| |
| if (mode == IL_LED_DEFAULT) |
| mode = il->cfg->led_mode; |
| |
| il->led.name = |
| kasprintf(GFP_KERNEL, "%s-led", wiphy_name(il->hw->wiphy)); |
| il->led.brightness_set = il_led_brightness_set; |
| il->led.blink_set = il_led_blink_set; |
| il->led.max_brightness = 1; |
| |
| switch (mode) { |
| case IL_LED_DEFAULT: |
| WARN_ON(1); |
| break; |
| case IL_LED_BLINK: |
| il->led.default_trigger = |
| ieee80211_create_tpt_led_trigger(il->hw, |
| IEEE80211_TPT_LEDTRIG_FL_CONNECTED, |
| il_blink, |
| ARRAY_SIZE(il_blink)); |
| break; |
| case IL_LED_RF_STATE: |
| il->led.default_trigger = ieee80211_get_radio_led_name(il->hw); |
| break; |
| } |
| |
| ret = led_classdev_register(&il->pci_dev->dev, &il->led); |
| if (ret) { |
| kfree(il->led.name); |
| return; |
| } |
| |
| il->led_registered = true; |
| } |
| EXPORT_SYMBOL(il_leds_init); |
| |
| void |
| il_leds_exit(struct il_priv *il) |
| { |
| if (!il->led_registered) |
| return; |
| |
| led_classdev_unregister(&il->led); |
| kfree(il->led.name); |
| } |
| EXPORT_SYMBOL(il_leds_exit); |
| |
| /************************** EEPROM BANDS **************************** |
| * |
| * The il_eeprom_band definitions below provide the mapping from the |
| * EEPROM contents to the specific channel number supported for each |
| * band. |
| * |
| * For example, il_priv->eeprom.band_3_channels[4] from the band_3 |
| * definition below maps to physical channel 42 in the 5.2GHz spectrum. |
| * The specific geography and calibration information for that channel |
| * is contained in the eeprom map itself. |
| * |
| * During init, we copy the eeprom information and channel map |
| * information into il->channel_info_24/52 and il->channel_map_24/52 |
| * |
| * channel_map_24/52 provides the idx in the channel_info array for a |
| * given channel. We have to have two separate maps as there is channel |
| * overlap with the 2.4GHz and 5.2GHz spectrum as seen in band_1 and |
| * band_2 |
| * |
| * A value of 0xff stored in the channel_map indicates that the channel |
| * is not supported by the hardware at all. |
| * |
| * A value of 0xfe in the channel_map indicates that the channel is not |
| * valid for Tx with the current hardware. This means that |
| * while the system can tune and receive on a given channel, it may not |
| * be able to associate or transmit any frames on that |
| * channel. There is no corresponding channel information for that |
| * entry. |
| * |
| *********************************************************************/ |
| |
| /* 2.4 GHz */ |
| const u8 il_eeprom_band_1[14] = { |
| 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 |
| }; |
| |
| /* 5.2 GHz bands */ |
| static const u8 il_eeprom_band_2[] = { /* 4915-5080MHz */ |
| 183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16 |
| }; |
| |
| static const u8 il_eeprom_band_3[] = { /* 5170-5320MHz */ |
| 34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64 |
| }; |
| |
| static const u8 il_eeprom_band_4[] = { /* 5500-5700MHz */ |
| 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140 |
| }; |
| |
| static const u8 il_eeprom_band_5[] = { /* 5725-5825MHz */ |
| 145, 149, 153, 157, 161, 165 |
| }; |
| |
| static const u8 il_eeprom_band_6[] = { /* 2.4 ht40 channel */ |
| 1, 2, 3, 4, 5, 6, 7 |
| }; |
| |
| static const u8 il_eeprom_band_7[] = { /* 5.2 ht40 channel */ |
| 36, 44, 52, 60, 100, 108, 116, 124, 132, 149, 157 |
| }; |
| |
| /****************************************************************************** |
| * |
| * EEPROM related functions |
| * |
| ******************************************************************************/ |
| |
| static int |
| il_eeprom_verify_signature(struct il_priv *il) |
| { |
| u32 gp = _il_rd(il, CSR_EEPROM_GP) & CSR_EEPROM_GP_VALID_MSK; |
| int ret = 0; |
| |
| D_EEPROM("EEPROM signature=0x%08x\n", gp); |
| switch (gp) { |
| case CSR_EEPROM_GP_GOOD_SIG_EEP_LESS_THAN_4K: |
| case CSR_EEPROM_GP_GOOD_SIG_EEP_MORE_THAN_4K: |
| break; |
| default: |
| IL_ERR("bad EEPROM signature," "EEPROM_GP=0x%08x\n", gp); |
| ret = -ENOENT; |
| break; |
| } |
| return ret; |
| } |
| |
| const u8 * |
| il_eeprom_query_addr(const struct il_priv *il, size_t offset) |
| { |
| BUG_ON(offset >= il->cfg->eeprom_size); |
| return &il->eeprom[offset]; |
| } |
| EXPORT_SYMBOL(il_eeprom_query_addr); |
| |
| u16 |
| il_eeprom_query16(const struct il_priv *il, size_t offset) |
| { |
| if (!il->eeprom) |
| return 0; |
| return (u16) il->eeprom[offset] | ((u16) il->eeprom[offset + 1] << 8); |
| } |
| EXPORT_SYMBOL(il_eeprom_query16); |
| |
| /** |
| * il_eeprom_init - read EEPROM contents |
| * |
| * Load the EEPROM contents from adapter into il->eeprom |
| * |
| * NOTE: This routine uses the non-debug IO access functions. |
| */ |
| int |
| il_eeprom_init(struct il_priv *il) |
| { |
| __le16 *e; |
| u32 gp = _il_rd(il, CSR_EEPROM_GP); |
| int sz; |
| int ret; |
| u16 addr; |
| |
| /* allocate eeprom */ |
| sz = il->cfg->eeprom_size; |
| D_EEPROM("NVM size = %d\n", sz); |
| il->eeprom = kzalloc(sz, GFP_KERNEL); |
| if (!il->eeprom) { |
| ret = -ENOMEM; |
| goto alloc_err; |
| } |
| e = (__le16 *) il->eeprom; |
| |
| il->ops->apm_init(il); |
| |
| ret = il_eeprom_verify_signature(il); |
| if (ret < 0) { |
| IL_ERR("EEPROM not found, EEPROM_GP=0x%08x\n", gp); |
| ret = -ENOENT; |
| goto err; |
| } |
| |
| /* Make sure driver (instead of uCode) is allowed to read EEPROM */ |
| ret = il->ops->eeprom_acquire_semaphore(il); |
| if (ret < 0) { |
| IL_ERR("Failed to acquire EEPROM semaphore.\n"); |
| ret = -ENOENT; |
| goto err; |
| } |
| |
| /* eeprom is an array of 16bit values */ |
| for (addr = 0; addr < sz; addr += sizeof(u16)) { |
| u32 r; |
| |
| _il_wr(il, CSR_EEPROM_REG, |
| CSR_EEPROM_REG_MSK_ADDR & (addr << 1)); |
| |
| ret = |
| _il_poll_bit(il, CSR_EEPROM_REG, |
| CSR_EEPROM_REG_READ_VALID_MSK, |
| CSR_EEPROM_REG_READ_VALID_MSK, |
| IL_EEPROM_ACCESS_TIMEOUT); |
| if (ret < 0) { |
| IL_ERR("Time out reading EEPROM[%d]\n", addr); |
| goto done; |
| } |
| r = _il_rd(il, CSR_EEPROM_REG); |
| e[addr / 2] = cpu_to_le16(r >> 16); |
| } |
| |
| D_EEPROM("NVM Type: %s, version: 0x%x\n", "EEPROM", |
| il_eeprom_query16(il, EEPROM_VERSION)); |
| |
| ret = 0; |
| done: |
| il->ops->eeprom_release_semaphore(il); |
| |
| err: |
| if (ret) |
| il_eeprom_free(il); |
| /* Reset chip to save power until we load uCode during "up". */ |
| il_apm_stop(il); |
| alloc_err: |
| return ret; |
| } |
| EXPORT_SYMBOL(il_eeprom_init); |
| |
| void |
| il_eeprom_free(struct il_priv *il) |
| { |
| kfree(il->eeprom); |
| il->eeprom = NULL; |
| } |
| EXPORT_SYMBOL(il_eeprom_free); |
| |
| static void |
| il_init_band_reference(const struct il_priv *il, int eep_band, |
| int *eeprom_ch_count, |
| const struct il_eeprom_channel **eeprom_ch_info, |
| const u8 **eeprom_ch_idx) |
| { |
| u32 offset = il->cfg->regulatory_bands[eep_band - 1]; |
| |
| switch (eep_band) { |
| case 1: /* 2.4GHz band */ |
| *eeprom_ch_count = ARRAY_SIZE(il_eeprom_band_1); |
| *eeprom_ch_info = |
| (struct il_eeprom_channel *)il_eeprom_query_addr(il, |
| offset); |
| *eeprom_ch_idx = il_eeprom_band_1; |
| break; |
| case 2: /* 4.9GHz band */ |
| *eeprom_ch_count = ARRAY_SIZE(il_eeprom_band_2); |
| *eeprom_ch_info = |
| (struct il_eeprom_channel *)il_eeprom_query_addr(il, |
| offset); |
| *eeprom_ch_idx = il_eeprom_band_2; |
| break; |
| case 3: /* 5.2GHz band */ |
| *eeprom_ch_count = ARRAY_SIZE(il_eeprom_band_3); |
| *eeprom_ch_info = |
| (struct il_eeprom_channel *)il_eeprom_query_addr(il, |
| offset); |
| *eeprom_ch_idx = il_eeprom_band_3; |
| break; |
| case 4: /* 5.5GHz band */ |
| *eeprom_ch_count = ARRAY_SIZE(il_eeprom_band_4); |
| *eeprom_ch_info = |
| (struct il_eeprom_channel *)il_eeprom_query_addr(il, |
| offset); |
| *eeprom_ch_idx = il_eeprom_band_4; |
| break; |
| case 5: /* 5.7GHz band */ |
| *eeprom_ch_count = ARRAY_SIZE(il_eeprom_band_5); |
| *eeprom_ch_info = |
| (struct il_eeprom_channel *)il_eeprom_query_addr(il, |
| offset); |
| *eeprom_ch_idx = il_eeprom_band_5; |
| break; |
| case 6: /* 2.4GHz ht40 channels */ |
| *eeprom_ch_count = ARRAY_SIZE(il_eeprom_band_6); |
| *eeprom_ch_info = |
| (struct il_eeprom_channel *)il_eeprom_query_addr(il, |
| offset); |
| *eeprom_ch_idx = il_eeprom_band_6; |
| break; |
| case 7: /* 5 GHz ht40 channels */ |
| *eeprom_ch_count = ARRAY_SIZE(il_eeprom_band_7); |
| *eeprom_ch_info = |
| (struct il_eeprom_channel *)il_eeprom_query_addr(il, |
| offset); |
| *eeprom_ch_idx = il_eeprom_band_7; |
| break; |
| default: |
| BUG(); |
| } |
| } |
| |
| #define CHECK_AND_PRINT(x) ((eeprom_ch->flags & EEPROM_CHANNEL_##x) \ |
| ? # x " " : "") |
| /** |
| * il_mod_ht40_chan_info - Copy ht40 channel info into driver's il. |
| * |
| * Does not set up a command, or touch hardware. |
| */ |
| static int |
| il_mod_ht40_chan_info(struct il_priv *il, enum ieee80211_band band, u16 channel, |
| const struct il_eeprom_channel *eeprom_ch, |
| u8 clear_ht40_extension_channel) |
| { |
| struct il_channel_info *ch_info; |
| |
| ch_info = |
| (struct il_channel_info *)il_get_channel_info(il, band, channel); |
| |
| if (!il_is_channel_valid(ch_info)) |
| return -1; |
| |
| D_EEPROM("HT40 Ch. %d [%sGHz] %s%s%s%s%s(0x%02x %ddBm):" |
| " Ad-Hoc %ssupported\n", ch_info->channel, |
| il_is_channel_a_band(ch_info) ? "5.2" : "2.4", |
| CHECK_AND_PRINT(IBSS), CHECK_AND_PRINT(ACTIVE), |
| CHECK_AND_PRINT(RADAR), CHECK_AND_PRINT(WIDE), |
| CHECK_AND_PRINT(DFS), eeprom_ch->flags, |
| eeprom_ch->max_power_avg, |
| ((eeprom_ch->flags & EEPROM_CHANNEL_IBSS) && |
| !(eeprom_ch->flags & EEPROM_CHANNEL_RADAR)) ? "" : "not "); |
| |
| ch_info->ht40_eeprom = *eeprom_ch; |
| ch_info->ht40_max_power_avg = eeprom_ch->max_power_avg; |
| ch_info->ht40_flags = eeprom_ch->flags; |
| if (eeprom_ch->flags & EEPROM_CHANNEL_VALID) |
| ch_info->ht40_extension_channel &= |
| ~clear_ht40_extension_channel; |
| |
| return 0; |
| } |
| |
| #define CHECK_AND_PRINT_I(x) ((eeprom_ch_info[ch].flags & EEPROM_CHANNEL_##x) \ |
| ? # x " " : "") |
| |
| /** |
| * il_init_channel_map - Set up driver's info for all possible channels |
| */ |
| int |
| il_init_channel_map(struct il_priv *il) |
| { |
| int eeprom_ch_count = 0; |
| const u8 *eeprom_ch_idx = NULL; |
| const struct il_eeprom_channel *eeprom_ch_info = NULL; |
| int band, ch; |
| struct il_channel_info *ch_info; |
| |
| if (il->channel_count) { |
| D_EEPROM("Channel map already initialized.\n"); |
| return 0; |
| } |
| |
| D_EEPROM("Initializing regulatory info from EEPROM\n"); |
| |
| il->channel_count = |
| ARRAY_SIZE(il_eeprom_band_1) + ARRAY_SIZE(il_eeprom_band_2) + |
| ARRAY_SIZE(il_eeprom_band_3) + ARRAY_SIZE(il_eeprom_band_4) + |
| ARRAY_SIZE(il_eeprom_band_5); |
| |
| D_EEPROM("Parsing data for %d channels.\n", il->channel_count); |
| |
| il->channel_info = |
| kzalloc(sizeof(struct il_channel_info) * il->channel_count, |
| GFP_KERNEL); |
| if (!il->channel_info) { |
| IL_ERR("Could not allocate channel_info\n"); |
| il->channel_count = 0; |
| return -ENOMEM; |
| } |
| |
| ch_info = il->channel_info; |
| |
| /* Loop through the 5 EEPROM bands adding them in order to the |
| * channel map we maintain (that contains additional information than |
| * what just in the EEPROM) */ |
| for (band = 1; band <= 5; band++) { |
| |
| il_init_band_reference(il, band, &eeprom_ch_count, |
| &eeprom_ch_info, &eeprom_ch_idx); |
| |
| /* Loop through each band adding each of the channels */ |
| for (ch = 0; ch < eeprom_ch_count; ch++) { |
| ch_info->channel = eeprom_ch_idx[ch]; |
| ch_info->band = |
| (band == |
| 1) ? IEEE80211_BAND_2GHZ : IEEE80211_BAND_5GHZ; |
| |
| /* permanently store EEPROM's channel regulatory flags |
| * and max power in channel info database. */ |
| ch_info->eeprom = eeprom_ch_info[ch]; |
| |
| /* Copy the run-time flags so they are there even on |
| * invalid channels */ |
| ch_info->flags = eeprom_ch_info[ch].flags; |
| /* First write that ht40 is not enabled, and then enable |
| * one by one */ |
| ch_info->ht40_extension_channel = |
| IEEE80211_CHAN_NO_HT40; |
| |
| if (!(il_is_channel_valid(ch_info))) { |
| D_EEPROM("Ch. %d Flags %x [%sGHz] - " |
| "No traffic\n", ch_info->channel, |
| ch_info->flags, |
| il_is_channel_a_band(ch_info) ? "5.2" : |
| "2.4"); |
| ch_info++; |
| continue; |
| } |
| |
| /* Initialize regulatory-based run-time data */ |
| ch_info->max_power_avg = ch_info->curr_txpow = |
| eeprom_ch_info[ch].max_power_avg; |
| ch_info->scan_power = eeprom_ch_info[ch].max_power_avg; |
| ch_info->min_power = 0; |
| |
| D_EEPROM("Ch. %d [%sGHz] " "%s%s%s%s%s%s(0x%02x %ddBm):" |
| " Ad-Hoc %ssupported\n", ch_info->channel, |
| il_is_channel_a_band(ch_info) ? "5.2" : "2.4", |
| CHECK_AND_PRINT_I(VALID), |
| CHECK_AND_PRINT_I(IBSS), |
| CHECK_AND_PRINT_I(ACTIVE), |
| CHECK_AND_PRINT_I(RADAR), |
| CHECK_AND_PRINT_I(WIDE), |
| CHECK_AND_PRINT_I(DFS), |
| eeprom_ch_info[ch].flags, |
| eeprom_ch_info[ch].max_power_avg, |
| ((eeprom_ch_info[ch]. |
| flags & EEPROM_CHANNEL_IBSS) && |
| !(eeprom_ch_info[ch]. |
| flags & EEPROM_CHANNEL_RADAR)) ? "" : |
| "not "); |
| |
| ch_info++; |
| } |
| } |
| |
| /* Check if we do have HT40 channels */ |
| if (il->cfg->regulatory_bands[5] == EEPROM_REGULATORY_BAND_NO_HT40 && |
| il->cfg->regulatory_bands[6] == EEPROM_REGULATORY_BAND_NO_HT40) |
| return 0; |
| |
| /* Two additional EEPROM bands for 2.4 and 5 GHz HT40 channels */ |
| for (band = 6; band <= 7; band++) { |
| enum ieee80211_band ieeeband; |
| |
| il_init_band_reference(il, band, &eeprom_ch_count, |
| &eeprom_ch_info, &eeprom_ch_idx); |
| |
| /* EEPROM band 6 is 2.4, band 7 is 5 GHz */ |
| ieeeband = |
| (band == 6) ? IEEE80211_BAND_2GHZ : IEEE80211_BAND_5GHZ; |
| |
| /* Loop through each band adding each of the channels */ |
| for (ch = 0; ch < eeprom_ch_count; ch++) { |
| /* Set up driver's info for lower half */ |
| il_mod_ht40_chan_info(il, ieeeband, eeprom_ch_idx[ch], |
| &eeprom_ch_info[ch], |
| IEEE80211_CHAN_NO_HT40PLUS); |
| |
| /* Set up driver's info for upper half */ |
| il_mod_ht40_chan_info(il, ieeeband, |
| eeprom_ch_idx[ch] + 4, |
| &eeprom_ch_info[ch], |
| IEEE80211_CHAN_NO_HT40MINUS); |
| } |
| } |
| |
| return 0; |
| } |
| EXPORT_SYMBOL(il_init_channel_map); |
| |
| /* |
| * il_free_channel_map - undo allocations in il_init_channel_map |
| */ |
| void |
| il_free_channel_map(struct il_priv *il) |
| { |
| kfree(il->channel_info); |
| il->channel_count = 0; |
| } |
| EXPORT_SYMBOL(il_free_channel_map); |
| |
| /** |
| * il_get_channel_info - Find driver's ilate channel info |
| * |
| * Based on band and channel number. |
| */ |
| const struct il_channel_info * |
| il_get_channel_info(const struct il_priv *il, enum ieee80211_band band, |
| u16 channel) |
| { |
| int i; |
| |
| switch (band) { |
| case IEEE80211_BAND_5GHZ: |
| for (i = 14; i < il->channel_count; i++) { |
| if (il->channel_info[i].channel == channel) |
| return &il->channel_info[i]; |
| } |
| break; |
| case IEEE80211_BAND_2GHZ: |
| if (channel >= 1 && channel <= 14) |
| return &il->channel_info[channel - 1]; |
| break; |
| default: |
| BUG(); |
| } |
| |
| return NULL; |
| } |
| EXPORT_SYMBOL(il_get_channel_info); |
| |
| /* |
| * Setting power level allows the card to go to sleep when not busy. |
| * |
| * We calculate a sleep command based on the required latency, which |
| * we get from mac80211. In order to handle thermal throttling, we can |
| * also use pre-defined power levels. |
| */ |
| |
| /* |
| * This defines the old power levels. They are still used by default |
| * (level 1) and for thermal throttle (levels 3 through 5) |
| */ |
| |
| struct il_power_vec_entry { |
| struct il_powertable_cmd cmd; |
| u8 no_dtim; /* number of skip dtim */ |
| }; |
| |
| static void |
| il_power_sleep_cam_cmd(struct il_priv *il, struct il_powertable_cmd *cmd) |
| { |
| memset(cmd, 0, sizeof(*cmd)); |
| |
| if (il->power_data.pci_pm) |
| cmd->flags |= IL_POWER_PCI_PM_MSK; |
| |
| D_POWER("Sleep command for CAM\n"); |
| } |
| |
| static int |
| il_set_power(struct il_priv *il, struct il_powertable_cmd *cmd) |
| { |
| D_POWER("Sending power/sleep command\n"); |
| D_POWER("Flags value = 0x%08X\n", cmd->flags); |
| D_POWER("Tx timeout = %u\n", le32_to_cpu(cmd->tx_data_timeout)); |
| D_POWER("Rx timeout = %u\n", le32_to_cpu(cmd->rx_data_timeout)); |
| D_POWER("Sleep interval vector = { %d , %d , %d , %d , %d }\n", |
| le32_to_cpu(cmd->sleep_interval[0]), |
| le32_to_cpu(cmd->sleep_interval[1]), |
| le32_to_cpu(cmd->sleep_interval[2]), |
| le32_to_cpu(cmd->sleep_interval[3]), |
| le32_to_cpu(cmd->sleep_interval[4])); |
| |
| return il_send_cmd_pdu(il, C_POWER_TBL, |
| sizeof(struct il_powertable_cmd), cmd); |
| } |
| |
| int |
| il_power_set_mode(struct il_priv *il, struct il_powertable_cmd *cmd, bool force) |
| { |
| int ret; |
| bool update_chains; |
| |
| lockdep_assert_held(&il->mutex); |
| |
| /* Don't update the RX chain when chain noise calibration is running */ |
| update_chains = il->chain_noise_data.state == IL_CHAIN_NOISE_DONE || |
| il->chain_noise_data.state == IL_CHAIN_NOISE_ALIVE; |
| |
| if (!memcmp(&il->power_data.sleep_cmd, cmd, sizeof(*cmd)) && !force) |
| return 0; |
| |
| if (!il_is_ready_rf(il)) |
| return -EIO; |
| |
| /* scan complete use sleep_power_next, need to be updated */ |
| memcpy(&il->power_data.sleep_cmd_next, cmd, sizeof(*cmd)); |
| if (test_bit(S_SCANNING, &il->status) && !force) { |
| D_INFO("Defer power set mode while scanning\n"); |
| return 0; |
| } |
| |
| if (cmd->flags & IL_POWER_DRIVER_ALLOW_SLEEP_MSK) |
| set_bit(S_POWER_PMI, &il->status); |
| |
| ret = il_set_power(il, cmd); |
| if (!ret) { |
| if (!(cmd->flags & IL_POWER_DRIVER_ALLOW_SLEEP_MSK)) |
| clear_bit(S_POWER_PMI, &il->status); |
| |
| if (il->ops->update_chain_flags && update_chains) |
| il->ops->update_chain_flags(il); |
| else if (il->ops->update_chain_flags) |
| D_POWER("Cannot update the power, chain noise " |
| "calibration running: %d\n", |
| il->chain_noise_data.state); |
| |
| memcpy(&il->power_data.sleep_cmd, cmd, sizeof(*cmd)); |
| } else |
| IL_ERR("set power fail, ret = %d", ret); |
| |
| return ret; |
| } |
| |
| int |
| il_power_update_mode(struct il_priv *il, bool force) |
| { |
| struct il_powertable_cmd cmd; |
| |
| il_power_sleep_cam_cmd(il, &cmd); |
| return il_power_set_mode(il, &cmd, force); |
| } |
| EXPORT_SYMBOL(il_power_update_mode); |
| |
| /* initialize to default */ |
| void |
| il_power_initialize(struct il_priv *il) |
| { |
| u16 lctl = il_pcie_link_ctl(il); |
| |
| il->power_data.pci_pm = !(lctl & PCI_CFG_LINK_CTRL_VAL_L0S_EN); |
| |
| il->power_data.debug_sleep_level_override = -1; |
| |
| memset(&il->power_data.sleep_cmd, 0, sizeof(il->power_data.sleep_cmd)); |
| } |
| EXPORT_SYMBOL(il_power_initialize); |
| |
| /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after |
| * sending probe req. This should be set long enough to hear probe responses |
| * from more than one AP. */ |
| #define IL_ACTIVE_DWELL_TIME_24 (30) /* all times in msec */ |
| #define IL_ACTIVE_DWELL_TIME_52 (20) |
| |
| #define IL_ACTIVE_DWELL_FACTOR_24GHZ (3) |
| #define IL_ACTIVE_DWELL_FACTOR_52GHZ (2) |
| |
| /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel. |
| * Must be set longer than active dwell time. |
| * For the most reliable scan, set > AP beacon interval (typically 100msec). */ |
| #define IL_PASSIVE_DWELL_TIME_24 (20) /* all times in msec */ |
| #define IL_PASSIVE_DWELL_TIME_52 (10) |
| #define IL_PASSIVE_DWELL_BASE (100) |
| #define IL_CHANNEL_TUNE_TIME 5 |
| |
| static int |
| il_send_scan_abort(struct il_priv *il) |
| { |
| int ret; |
| struct il_rx_pkt *pkt; |
| struct il_host_cmd cmd = { |
| .id = C_SCAN_ABORT, |
| .flags = CMD_WANT_SKB, |
| }; |
| |
| /* Exit instantly with error when device is not ready |
| * to receive scan abort command or it does not perform |
| * hardware scan currently */ |
| if (!test_bit(S_READY, &il->status) || |
| !test_bit(S_GEO_CONFIGURED, &il->status) || |
| !test_bit(S_SCAN_HW, &il->status) || |
| test_bit(S_FW_ERROR, &il->status) || |
| test_bit(S_EXIT_PENDING, &il->status)) |
| return -EIO; |
| |
| ret = il_send_cmd_sync(il, &cmd); |
| if (ret) |
| return ret; |
| |
| pkt = (struct il_rx_pkt *)cmd.reply_page; |
| if (pkt->u.status != CAN_ABORT_STATUS) { |
| /* The scan abort will return 1 for success or |
| * 2 for "failure". A failure condition can be |
| * due to simply not being in an active scan which |
| * can occur if we send the scan abort before we |
| * the microcode has notified us that a scan is |
| * completed. */ |
| D_SCAN("SCAN_ABORT ret %d.\n", pkt->u.status); |
| ret = -EIO; |
| } |
| |
| il_free_pages(il, cmd.reply_page); |
| return ret; |
| } |
| |
| static void |
| il_complete_scan(struct il_priv *il, bool aborted) |
| { |
| /* check if scan was requested from mac80211 */ |
| if (il->scan_request) { |
| D_SCAN("Complete scan in mac80211\n"); |
| ieee80211_scan_completed(il->hw, aborted); |
| } |
| |
| il->scan_vif = NULL; |
| il->scan_request = NULL; |
| } |
| |
| void |
| il_force_scan_end(struct il_priv *il) |
| { |
| lockdep_assert_held(&il->mutex); |
| |
| if (!test_bit(S_SCANNING, &il->status)) { |
| D_SCAN("Forcing scan end while not scanning\n"); |
| return; |
| } |
| |
| D_SCAN("Forcing scan end\n"); |
| clear_bit(S_SCANNING, &il->status); |
| clear_bit(S_SCAN_HW, &il->status); |
| clear_bit(S_SCAN_ABORTING, &il->status); |
| il_complete_scan(il, true); |
| } |
| |
| static void |
| il_do_scan_abort(struct il_priv *il) |
| { |
| int ret; |
| |
| lockdep_assert_held(&il->mutex); |
| |
| if (!test_bit(S_SCANNING, &il->status)) { |
| D_SCAN("Not performing scan to abort\n"); |
| return; |
| } |
| |
| if (test_and_set_bit(S_SCAN_ABORTING, &il->status)) { |
| D_SCAN("Scan abort in progress\n"); |
| return; |
| } |
| |
| ret = il_send_scan_abort(il); |
| if (ret) { |
| D_SCAN("Send scan abort failed %d\n", ret); |
| il_force_scan_end(il); |
| } else |
| D_SCAN("Successfully send scan abort\n"); |
| } |
| |
| /** |
| * il_scan_cancel - Cancel any currently executing HW scan |
| */ |
| int |
| il_scan_cancel(struct il_priv *il) |
| { |
| D_SCAN("Queuing abort scan\n"); |
| queue_work(il->workqueue, &il->abort_scan); |
| return 0; |
| } |
| EXPORT_SYMBOL(il_scan_cancel); |
| |
| /** |
| * il_scan_cancel_timeout - Cancel any currently executing HW scan |
| * @ms: amount of time to wait (in milliseconds) for scan to abort |
| * |
| */ |
| int |
| il_scan_cancel_timeout(struct il_priv *il, unsigned long ms) |
| { |
| unsigned long timeout = jiffies + msecs_to_jiffies(ms); |
| |
| lockdep_assert_held(&il->mutex); |
| |
| D_SCAN("Scan cancel timeout\n"); |
| |
| il_do_scan_abort(il); |
| |
| while (time_before_eq(jiffies, timeout)) { |
| if (!test_bit(S_SCAN_HW, &il->status)) |
| break; |
| msleep(20); |
| } |
| |
| return test_bit(S_SCAN_HW, &il->status); |
| } |
| EXPORT_SYMBOL(il_scan_cancel_timeout); |
| |
| /* Service response to C_SCAN (0x80) */ |
| static void |
| il_hdl_scan(struct il_priv *il, struct il_rx_buf *rxb) |
| { |
| #ifdef CONFIG_IWLEGACY_DEBUG |
| struct il_rx_pkt *pkt = rxb_addr(rxb); |
| struct il_scanreq_notification *notif = |
| (struct il_scanreq_notification *)pkt->u.raw; |
| |
| D_SCAN("Scan request status = 0x%x\n", notif->status); |
| #endif |
| } |
| |
| /* Service N_SCAN_START (0x82) */ |
| static void |
| il_hdl_scan_start(struct il_priv *il, struct il_rx_buf *rxb) |
| { |
| struct il_rx_pkt *pkt = rxb_addr(rxb); |
| struct il_scanstart_notification *notif = |
| (struct il_scanstart_notification *)pkt->u.raw; |
| il->scan_start_tsf = le32_to_cpu(notif->tsf_low); |
| D_SCAN("Scan start: " "%d [802.11%s] " |
| "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n", notif->channel, |
| notif->band ? "bg" : "a", le32_to_cpu(notif->tsf_high), |
| le32_to_cpu(notif->tsf_low), notif->status, notif->beacon_timer); |
| } |
| |
| /* Service N_SCAN_RESULTS (0x83) */ |
| static void |
| il_hdl_scan_results(struct il_priv *il, struct il_rx_buf *rxb) |
| { |
| #ifdef CONFIG_IWLEGACY_DEBUG |
| struct il_rx_pkt *pkt = rxb_addr(rxb); |
| struct il_scanresults_notification *notif = |
| (struct il_scanresults_notification *)pkt->u.raw; |
| |
| D_SCAN("Scan ch.res: " "%d [802.11%s] " "(TSF: 0x%08X:%08X) - %d " |
| "elapsed=%lu usec\n", notif->channel, notif->band ? "bg" : "a", |
| le32_to_cpu(notif->tsf_high), le32_to_cpu(notif->tsf_low), |
| le32_to_cpu(notif->stats[0]), |
| le32_to_cpu(notif->tsf_low) - il->scan_start_tsf); |
| #endif |
| } |
| |
| /* Service N_SCAN_COMPLETE (0x84) */ |
| static void |
| il_hdl_scan_complete(struct il_priv *il, struct il_rx_buf *rxb) |
| { |
| |
| #ifdef CONFIG_IWLEGACY_DEBUG |
| struct il_rx_pkt *pkt = rxb_addr(rxb); |
| struct il_scancomplete_notification *scan_notif = (void *)pkt->u.raw; |
| #endif |
| |
| D_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n", |
| scan_notif->scanned_channels, scan_notif->tsf_low, |
| scan_notif->tsf_high, scan_notif->status); |
| |
| /* The HW is no longer scanning */ |
| clear_bit(S_SCAN_HW, &il->status); |
| |
| D_SCAN("Scan on %sGHz took %dms\n", |
| (il->scan_band == IEEE80211_BAND_2GHZ) ? "2.4" : "5.2", |
| jiffies_to_msecs(jiffies - il->scan_start)); |
| |
| queue_work(il->workqueue, &il->scan_completed); |
| } |
| |
| void |
| il_setup_rx_scan_handlers(struct il_priv *il) |
| { |
| /* scan handlers */ |
| il->handlers[C_SCAN] = il_hdl_scan; |
| il->handlers[N_SCAN_START] = il_hdl_scan_start; |
| il->handlers[N_SCAN_RESULTS] = il_hdl_scan_results; |
| il->handlers[N_SCAN_COMPLETE] = il_hdl_scan_complete; |
| } |
| EXPORT_SYMBOL(il_setup_rx_scan_handlers); |
| |
| inline u16 |
| il_get_active_dwell_time(struct il_priv *il, enum ieee80211_band band, |
| u8 n_probes) |
| { |
| if (band == IEEE80211_BAND_5GHZ) |
| return IL_ACTIVE_DWELL_TIME_52 + |
| IL_ACTIVE_DWELL_FACTOR_52GHZ * (n_probes + 1); |
| else |
| return IL_ACTIVE_DWELL_TIME_24 + |
| IL_ACTIVE_DWELL_FACTOR_24GHZ * (n_probes + 1); |
| } |
| EXPORT_SYMBOL(il_get_active_dwell_time); |
| |
| u16 |
| il_get_passive_dwell_time(struct il_priv *il, enum ieee80211_band band, |
| struct ieee80211_vif *vif) |
| { |
| u16 value; |
| |
| u16 passive = |
| (band == |
| IEEE80211_BAND_2GHZ) ? IL_PASSIVE_DWELL_BASE + |
| IL_PASSIVE_DWELL_TIME_24 : IL_PASSIVE_DWELL_BASE + |
| IL_PASSIVE_DWELL_TIME_52; |
| |
| if (il_is_any_associated(il)) { |
| /* |
| * If we're associated, we clamp the maximum passive |
| * dwell time to be 98% of the smallest beacon interval |
| * (minus 2 * channel tune time) |
| */ |
| value = il->vif ? il->vif->bss_conf.beacon_int : 0; |
| if (value > IL_PASSIVE_DWELL_BASE || !value) |
| value = IL_PASSIVE_DWELL_BASE; |
| value = (value * 98) / 100 - IL_CHANNEL_TUNE_TIME * 2; |
| passive = min(value, passive); |
| } |
| |
| return passive; |
| } |
| EXPORT_SYMBOL(il_get_passive_dwell_time); |
| |
| void |
| il_init_scan_params(struct il_priv *il) |
| { |
| u8 ant_idx = fls(il->hw_params.valid_tx_ant) - 1; |
| if (!il->scan_tx_ant[IEEE80211_BAND_5GHZ]) |
| il->scan_tx_ant[IEEE80211_BAND_5GHZ] = ant_idx; |
| if (!il->scan_tx_ant[IEEE80211_BAND_2GHZ]) |
| il->scan_tx_ant[IEEE80211_BAND_2GHZ] = ant_idx; |
| } |
| EXPORT_SYMBOL(il_init_scan_params); |
| |
| static int |
| il_scan_initiate(struct il_priv *il, struct ieee80211_vif *vif) |
| { |
| int ret; |
| |
| lockdep_assert_held(&il->mutex); |
| |
| cancel_delayed_work(&il->scan_check); |
| |
| if (!il_is_ready_rf(il)) { |
| IL_WARN("Request scan called when driver not ready.\n"); |
| return -EIO; |
| } |
| |
| if (test_bit(S_SCAN_HW, &il->status)) { |
| D_SCAN("Multiple concurrent scan requests in parallel.\n"); |
| return -EBUSY; |
| } |
| |
| if (test_bit(S_SCAN_ABORTING, &il->status)) { |
| D_SCAN("Scan request while abort pending.\n"); |
| return -EBUSY; |
| } |
| |
| D_SCAN("Starting scan...\n"); |
| |
| set_bit(S_SCANNING, &il->status); |
| il->scan_start = jiffies; |
| |
| ret = il->ops->request_scan(il, vif); |
| if (ret) { |
| clear_bit(S_SCANNING, &il->status); |
| return ret; |
| } |
| |
| queue_delayed_work(il->workqueue, &il->scan_check, |
| IL_SCAN_CHECK_WATCHDOG); |
| |
| return 0; |
| } |
| |
| int |
| il_mac_hw_scan(struct ieee80211_hw *hw, struct ieee80211_vif *vif, |
| struct cfg80211_scan_request *req) |
| { |
| struct il_priv *il = hw->priv; |
| int ret; |
| |
| if (req->n_channels == 0) { |
| IL_ERR("Can not scan on no channels.\n"); |
| return -EINVAL; |
| } |
| |
| mutex_lock(&il->mutex); |
| D_MAC80211("enter\n"); |
| |
| if (test_bit(S_SCANNING, &il->status)) { |
| D_SCAN("Scan already in progress.\n"); |
| ret = -EAGAIN; |
| goto out_unlock; |
| } |
| |
| /* mac80211 will only ask for one band at a time */ |
| il->scan_request = req; |
| il->scan_vif = vif; |
| il->scan_band = req->channels[0]->band; |
| |
| ret = il_scan_initiate(il, vif); |
| |
| out_unlock: |
| D_MAC80211("leave ret %d\n", ret); |
| mutex_unlock(&il->mutex); |
| |
| return ret; |
| } |
| EXPORT_SYMBOL(il_mac_hw_scan); |
| |
| static void |
| il_bg_scan_check(struct work_struct *data) |
| { |
| struct il_priv *il = |
| container_of(data, struct il_priv, scan_check.work); |
| |
| D_SCAN("Scan check work\n"); |
| |
| /* Since we are here firmware does not finish scan and |
| * most likely is in bad shape, so we don't bother to |
| * send abort command, just force scan complete to mac80211 */ |
| mutex_lock(&il->mutex); |
| il_force_scan_end(il); |
| mutex_unlock(&il->mutex); |
| } |
| |
| /** |
| * il_fill_probe_req - fill in all required fields and IE for probe request |
| */ |
| |
| u16 |
| il_fill_probe_req(struct il_priv *il, struct ieee80211_mgmt *frame, |
| const u8 *ta, const u8 *ies, int ie_len, int left) |
| { |
| int len = 0; |
| u8 *pos = NULL; |
| |
| /* Make sure there is enough space for the probe request, |
| * two mandatory IEs and the data */ |
| left -= 24; |
| if (left < 0) |
| return 0; |
| |
| frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ); |
| memcpy(frame->da, il_bcast_addr, ETH_ALEN); |
| memcpy(frame->sa, ta, ETH_ALEN); |
| memcpy(frame->bssid, il_bcast_addr, ETH_ALEN); |
| frame->seq_ctrl = 0; |
| |
| len += 24; |
| |
| /* ...next IE... */ |
| pos = &frame->u.probe_req.variable[0]; |
| |
| /* fill in our indirect SSID IE */ |
| left -= 2; |
| if (left < 0) |
| return 0; |
| *pos++ = WLAN_EID_SSID; |
| *pos++ = 0; |
| |
| len += 2; |
| |
| if (WARN_ON(left < ie_len)) |
| return len; |
| |
| if (ies && ie_len) { |
| memcpy(pos, ies, ie_len); |
| len += ie_len; |
| } |
| |
| return (u16) len; |
| } |
| EXPORT_SYMBOL(il_fill_probe_req); |
| |
| static void |
| il_bg_abort_scan(struct work_struct *work) |
| { |
| struct il_priv *il = container_of(work, struct il_priv, abort_scan); |
| |
| D_SCAN("Abort scan work\n"); |
| |
| /* We keep scan_check work queued in case when firmware will not |
| * report back scan completed notification */ |
| mutex_lock(&il->mutex); |
| il_scan_cancel_timeout(il, 200); |
| mutex_unlock(&il->mutex); |
| } |
| |
| static void |
| il_bg_scan_completed(struct work_struct *work) |
| { |
| struct il_priv *il = container_of(work, struct il_priv, scan_completed); |
| bool aborted; |
| |
| D_SCAN("Completed scan.\n"); |
| |
| cancel_delayed_work(&il->scan_check); |
| |
| mutex_lock(&il->mutex); |
| |
| aborted = test_and_clear_bit(S_SCAN_ABORTING, &il->status); |
| if (aborted) |
| D_SCAN("Aborted scan completed.\n"); |
| |
| if (!test_and_clear_bit(S_SCANNING, &il->status)) { |
| D_SCAN("Scan already completed.\n"); |
| goto out_settings; |
| } |
| |
| il_complete_scan(il, aborted); |
| |
| out_settings: |
| /* Can we still talk to firmware ? */ |
| if (!il_is_ready_rf(il)) |
| goto out; |
| |
| /* |
| * We do not commit power settings while scan is pending, |
| * do it now if the settings changed. |
| */ |
| il_power_set_mode(il, &il->power_data.sleep_cmd_next, false); |
| il_set_tx_power(il, il->tx_power_next, false); |
| |
| il->ops->post_scan(il); |
| |
| out: |
| mutex_unlock(&il->mutex); |
| } |
| |
| void |
| il_setup_scan_deferred_work(struct il_priv *il) |
| { |
| INIT_WORK(&il->scan_completed, il_bg_scan_completed); |
| INIT_WORK(&il->abort_scan, il_bg_abort_scan); |
| INIT_DELAYED_WORK(&il->scan_check, il_bg_scan_check); |
| } |
| EXPORT_SYMBOL(il_setup_scan_deferred_work); |
| |
| void |
| il_cancel_scan_deferred_work(struct il_priv *il) |
| { |
| cancel_work_sync(&il->abort_scan); |
| cancel_work_sync(&il->scan_completed); |
| |
| if (cancel_delayed_work_sync(&il->scan_check)) { |
| mutex_lock(&il->mutex); |
| il_force_scan_end(il); |
| mutex_unlock(&il->mutex); |
| } |
| } |
| EXPORT_SYMBOL(il_cancel_scan_deferred_work); |
| |
| /* il->sta_lock must be held */ |
| static void |
| il_sta_ucode_activate(struct il_priv *il, u8 sta_id) |
| { |
| |
| if (!(il->stations[sta_id].used & IL_STA_DRIVER_ACTIVE)) |
| IL_ERR("ACTIVATE a non DRIVER active station id %u addr %pM\n", |
| sta_id, il->stations[sta_id].sta.sta.addr); |
| |
| if (il->stations[sta_id].used & IL_STA_UCODE_ACTIVE) { |
| D_ASSOC("STA id %u addr %pM already present" |
| " in uCode (according to driver)\n", sta_id, |
| il->stations[sta_id].sta.sta.addr); |
| } else { |
| il->stations[sta_id].used |= IL_STA_UCODE_ACTIVE; |
| D_ASSOC("Added STA id %u addr %pM to uCode\n", sta_id, |
| il->stations[sta_id].sta.sta.addr); |
| } |
| } |
| |
| static int |
| il_process_add_sta_resp(struct il_priv *il, struct il_addsta_cmd *addsta, |
| struct il_rx_pkt *pkt, bool sync) |
| { |
| u8 sta_id = addsta->sta.sta_id; |
| unsigned long flags; |
| int ret = -EIO; |
| |
| if (pkt->hdr.flags & IL_CMD_FAILED_MSK) { |
| IL_ERR("Bad return from C_ADD_STA (0x%08X)\n", pkt->hdr.flags); |
| return ret; |
| } |
| |
| D_INFO("Processing response for adding station %u\n", sta_id); |
| |
| spin_lock_irqsave(&il->sta_lock, flags); |
| |
| switch (pkt->u.add_sta.status) { |
| case ADD_STA_SUCCESS_MSK: |
| D_INFO("C_ADD_STA PASSED\n"); |
| il_sta_ucode_activate(il, sta_id); |
| ret = 0; |
| break; |
| case ADD_STA_NO_ROOM_IN_TBL: |
| IL_ERR("Adding station %d failed, no room in table.\n", sta_id); |
| break; |
| case ADD_STA_NO_BLOCK_ACK_RESOURCE: |
| IL_ERR("Adding station %d failed, no block ack resource.\n", |
| sta_id); |
| break; |
| case ADD_STA_MODIFY_NON_EXIST_STA: |
| IL_ERR("Attempting to modify non-existing station %d\n", |
| sta_id); |
| break; |
| default: |
| D_ASSOC("Received C_ADD_STA:(0x%08X)\n", pkt->u.add_sta.status); |
| break; |
| } |
| |
| D_INFO("%s station id %u addr %pM\n", |
| il->stations[sta_id].sta.mode == |
| STA_CONTROL_MODIFY_MSK ? "Modified" : "Added", sta_id, |
| il->stations[sta_id].sta.sta.addr); |
| |
| /* |
| * XXX: The MAC address in the command buffer is often changed from |
| * the original sent to the device. That is, the MAC address |
| * written to the command buffer often is not the same MAC address |
| * read from the command buffer when the command returns. This |
| * issue has not yet been resolved and this debugging is left to |
| * observe the problem. |
| */ |
| D_INFO("%s station according to cmd buffer %pM\n", |
| il->stations[sta_id].sta.mode == |
| STA_CONTROL_MODIFY_MSK ? "Modified" : "Added", addsta->sta.addr); |
| spin_unlock_irqrestore(&il->sta_lock, flags); |
| |
| return ret; |
| } |
| |
| static void |
| il_add_sta_callback(struct il_priv *il, struct il_device_cmd *cmd, |
| struct il_rx_pkt *pkt) |
| { |
| struct il_addsta_cmd *addsta = (struct il_addsta_cmd *)cmd->cmd.payload; |
| |
| il_process_add_sta_resp(il, addsta, pkt, false); |
| |
| } |
| |
| int |
| il_send_add_sta(struct il_priv *il, struct il_addsta_cmd *sta, u8 flags) |
| { |
| struct il_rx_pkt *pkt = NULL; |
| int ret = 0; |
| u8 data[sizeof(*sta)]; |
| struct il_host_cmd cmd = { |
| .id = C_ADD_STA, |
| .flags = flags, |
| .data = data, |
| }; |
| u8 sta_id __maybe_unused = sta->sta.sta_id; |
| |
| D_INFO("Adding sta %u (%pM) %ssynchronously\n", sta_id, sta->sta.addr, |
| flags & CMD_ASYNC ? "a" : ""); |
| |
| if (flags & CMD_ASYNC) |
| cmd.callback = il_add_sta_callback; |
| else { |
| cmd.flags |= CMD_WANT_SKB; |
| might_sleep(); |
| } |
| |
| cmd.len = il->ops->build_addsta_hcmd(sta, data); |
| ret = il_send_cmd(il, &cmd); |
| |
| if (ret || (flags & CMD_ASYNC)) |
| return ret; |
| |
| if (ret == 0) { |
| pkt = (struct il_rx_pkt *)cmd.reply_page; |
| ret = il_process_add_sta_resp(il, sta, pkt, true); |
| } |
| il_free_pages(il, cmd.reply_page); |
| |
| return ret; |
| } |
| EXPORT_SYMBOL(il_send_add_sta); |
| |
| static void |
| il_set_ht_add_station(struct il_priv *il, u8 idx, struct ieee80211_sta *sta) |
| { |
| struct ieee80211_sta_ht_cap *sta_ht_inf = &sta->ht_cap; |
| __le32 sta_flags; |
| u8 mimo_ps_mode; |
| |
| if (!sta || !sta_ht_inf->ht_supported) |
| goto done; |
| |
| mimo_ps_mode = (sta_ht_inf->cap & IEEE80211_HT_CAP_SM_PS) >> 2; |
| D_ASSOC("spatial multiplexing power save mode: %s\n", |
| (mimo_ps_mode == WLAN_HT_CAP_SM_PS_STATIC) ? "static" : |
| (mimo_ps_mode == WLAN_HT_CAP_SM_PS_DYNAMIC) ? "dynamic" : |
| "disabled"); |
| |
| sta_flags = il->stations[idx].sta.station_flags; |
| |
| sta_flags &= ~(STA_FLG_RTS_MIMO_PROT_MSK | STA_FLG_MIMO_DIS_MSK); |
| |
| switch (mimo_ps_mode) { |
| case WLAN_HT_CAP_SM_PS_STATIC: |
| sta_flags |= STA_FLG_MIMO_DIS_MSK; |
| break; |
| case WLAN_HT_CAP_SM_PS_DYNAMIC: |
| sta_flags |= STA_FLG_RTS_MIMO_PROT_MSK; |
| break; |
| case WLAN_HT_CAP_SM_PS_DISABLED: |
| break; |
| default: |
| IL_WARN("Invalid MIMO PS mode %d\n", mimo_ps_mode); |
| break; |
| } |
| |
| sta_flags |= |
| cpu_to_le32((u32) sta_ht_inf-> |
| ampdu_factor << STA_FLG_MAX_AGG_SIZE_POS); |
| |
| sta_flags |= |
| cpu_to_le32((u32) sta_ht_inf-> |
| ampdu_density << STA_FLG_AGG_MPDU_DENSITY_POS); |
| |
| if (il_is_ht40_tx_allowed(il, &sta->ht_cap)) |
| sta_flags |= STA_FLG_HT40_EN_MSK; |
| else |
| sta_flags &= ~STA_FLG_HT40_EN_MSK; |
| |
| il->stations[idx].sta.station_flags = sta_flags; |
| done: |
| return; |
| } |
| |
| /** |
| * il_prep_station - Prepare station information for addition |
| * |
| * should be called with sta_lock held |
| */ |
| u8 |
| il_prep_station(struct il_priv *il, const u8 *addr, bool is_ap, |
| struct ieee80211_sta *sta) |
| { |
| struct il_station_entry *station; |
| int i; |
| u8 sta_id = IL_INVALID_STATION; |
| u16 rate; |
| |
| if (is_ap) |
| sta_id = IL_AP_ID; |
| else if (is_broadcast_ether_addr(addr)) |
| sta_id = il->hw_params.bcast_id; |
| else |
| for (i = IL_STA_ID; i < il->hw_params.max_stations; i++) { |
| if (ether_addr_equal(il->stations[i].sta.sta.addr, |
| addr)) { |
| sta_id = i; |
| break; |
| } |
| |
| if (!il->stations[i].used && |
| sta_id == IL_INVALID_STATION) |
| sta_id = i; |
| } |
| |
| /* |
| * These two conditions have the same outcome, but keep them |
| * separate |
| */ |
| if (unlikely(sta_id == IL_INVALID_STATION)) |
| return sta_id; |
| |
| /* |
| * uCode is not able to deal with multiple requests to add a |
| * station. Keep track if one is in progress so that we do not send |
| * another. |
| */ |
| if (il->stations[sta_id].used & IL_STA_UCODE_INPROGRESS) { |
| D_INFO("STA %d already in process of being added.\n", sta_id); |
| return sta_id; |
| } |
| |
| if ((il->stations[sta_id].used & IL_STA_DRIVER_ACTIVE) && |
| (il->stations[sta_id].used & IL_STA_UCODE_ACTIVE) && |
| ether_addr_equal(il->stations[sta_id].sta.sta.addr, addr)) { |
| D_ASSOC("STA %d (%pM) already added, not adding again.\n", |
| sta_id, addr); |
| return sta_id; |
| } |
| |
| station = &il->stations[sta_id]; |
| station->used = IL_STA_DRIVER_ACTIVE; |
| D_ASSOC("Add STA to driver ID %d: %pM\n", sta_id, addr); |
| il->num_stations++; |
| |
| /* Set up the C_ADD_STA command to send to device */ |
| memset(&station->sta, 0, sizeof(struct il_addsta_cmd)); |
| memcpy(station->sta.sta.addr, addr, ETH_ALEN); |
| station->sta.mode = 0; |
| station->sta.sta.sta_id = sta_id; |
| station->sta.station_flags = 0; |
| |
| /* |
| * OK to call unconditionally, since local stations (IBSS BSSID |
| * STA and broadcast STA) pass in a NULL sta, and mac80211 |
| * doesn't allow HT IBSS. |
| */ |
| il_set_ht_add_station(il, sta_id, sta); |
| |
| /* 3945 only */ |
| rate = (il->band == IEEE80211_BAND_5GHZ) ? RATE_6M_PLCP : RATE_1M_PLCP; |
| /* Turn on both antennas for the station... */ |
| station->sta.rate_n_flags = cpu_to_le16(rate | RATE_MCS_ANT_AB_MSK); |
| |
| return sta_id; |
| |
| } |
| EXPORT_SYMBOL_GPL(il_prep_station); |
| |
| #define STA_WAIT_TIMEOUT (HZ/2) |
| |
| /** |
| * il_add_station_common - |
| */ |
| int |
| il_add_station_common(struct il_priv *il, const u8 *addr, bool is_ap, |
| struct ieee80211_sta *sta, u8 *sta_id_r) |
| { |
| unsigned long flags_spin; |
| int ret = 0; |
| u8 sta_id; |
| struct il_addsta_cmd sta_cmd; |
| |
| *sta_id_r = 0; |
| spin_lock_irqsave(&il->sta_lock, flags_spin); |
| sta_id = il_prep_station(il, addr, is_ap, sta); |
| if (sta_id == IL_INVALID_STATION) { |
| IL_ERR("Unable to prepare station %pM for addition\n", addr); |
| spin_unlock_irqrestore(&il->sta_lock, flags_spin); |
| return -EINVAL; |
| } |
| |
| /* |
| * uCode is not able to deal with multiple requests to add a |
| * station. Keep track if one is in progress so that we do not send |
| * another. |
| */ |
| if (il->stations[sta_id].used & IL_STA_UCODE_INPROGRESS) { |
| D_INFO("STA %d already in process of being added.\n", sta_id); |
| spin_unlock_irqrestore(&il->sta_lock, flags_spin); |
| return -EEXIST; |
| } |
| |
| if ((il->stations[sta_id].used & IL_STA_DRIVER_ACTIVE) && |
| (il->stations[sta_id].used & IL_STA_UCODE_ACTIVE)) { |
| D_ASSOC("STA %d (%pM) already added, not adding again.\n", |
| sta_id, addr); |
| spin_unlock_irqrestore(&il->sta_lock, flags_spin); |
| return -EEXIST; |
| } |
| |
| il->stations[sta_id].used |= IL_STA_UCODE_INPROGRESS; |
| memcpy(&sta_cmd, &il->stations[sta_id].sta, |
| sizeof(struct il_addsta_cmd)); |
| spin_unlock_irqrestore(&il->sta_lock, flags_spin); |
| |
| /* Add station to device's station table */ |
| ret = il_send_add_sta(il, &sta_cmd, CMD_SYNC); |
| if (ret) { |
| spin_lock_irqsave(&il->sta_lock, flags_spin); |
| IL_ERR("Adding station %pM failed.\n", |
| il->stations[sta_id].sta.sta.addr); |
| il->stations[sta_id].used &= ~IL_STA_DRIVER_ACTIVE; |
| il->stations[sta_id].used &= ~IL_STA_UCODE_INPROGRESS; |
| spin_unlock_irqrestore(&il->sta_lock, flags_spin); |
| } |
| *sta_id_r = sta_id; |
| return ret; |
| } |
| EXPORT_SYMBOL(il_add_station_common); |
| |
| /** |
| * il_sta_ucode_deactivate - deactivate ucode status for a station |
| * |
| * il->sta_lock must be held |
| */ |
| static void |
| il_sta_ucode_deactivate(struct il_priv *il, u8 sta_id) |
| { |
| /* Ucode must be active and driver must be non active */ |
| if ((il->stations[sta_id]. |
| used & (IL_STA_UCODE_ACTIVE | IL_STA_DRIVER_ACTIVE)) != |
| IL_STA_UCODE_ACTIVE) |
| IL_ERR("removed non active STA %u\n", sta_id); |
| |
| il->stations[sta_id].used &= ~IL_STA_UCODE_ACTIVE; |
| |
| memset(&il->stations[sta_id], 0, sizeof(struct il_station_entry)); |
| D_ASSOC("Removed STA %u\n", sta_id); |
| } |
| |
| static int |
| il_send_remove_station(struct il_priv *il, const u8 * addr, int sta_id, |
| bool temporary) |
| { |
| struct il_rx_pkt *pkt; |
| int ret; |
| |
| unsigned long flags_spin; |
| struct il_rem_sta_cmd rm_sta_cmd; |
| |
| struct il_host_cmd cmd = { |
| .id = C_REM_STA, |
| .len = sizeof(struct il_rem_sta_cmd), |
| .flags = CMD_SYNC, |
| .data = &rm_sta_cmd, |
| }; |
| |
| memset(&rm_sta_cmd, 0, sizeof(rm_sta_cmd)); |
| rm_sta_cmd.num_sta = 1; |
| memcpy(&rm_sta_cmd.addr, addr, ETH_ALEN); |
| |
| cmd.flags |= CMD_WANT_SKB; |
| |
| ret = il_send_cmd(il, &cmd); |
| |
| if (ret) |
| return ret; |
| |
| pkt = (struct il_rx_pkt *)cmd.reply_page; |
| if (pkt->hdr.flags & IL_CMD_FAILED_MSK) { |
| IL_ERR("Bad return from C_REM_STA (0x%08X)\n", pkt->hdr.flags); |
| ret = -EIO; |
| } |
| |
| if (!ret) { |
| switch (pkt->u.rem_sta.status) { |
| case REM_STA_SUCCESS_MSK: |
| if (!temporary) { |
| spin_lock_irqsave(&il->sta_lock, flags_spin); |
| il_sta_ucode_deactivate(il, sta_id); |
| spin_unlock_irqrestore(&il->sta_lock, |
| flags_spin); |
| } |
| D_ASSOC("C_REM_STA PASSED\n"); |
| break; |
| default: |
| ret = -EIO; |
| IL_ERR("C_REM_STA failed\n"); |
| break; |
| } |
| } |
| il_free_pages(il, cmd.reply_page); |
| |
| return ret; |
| } |
| |
| /** |
| * il_remove_station - Remove driver's knowledge of station. |
| */ |
| int |
| il_remove_station(struct il_priv *il, const u8 sta_id, const u8 * addr) |
| { |
| unsigned long flags; |
| |
| if (!il_is_ready(il)) { |
| D_INFO("Unable to remove station %pM, device not ready.\n", |
| addr); |
| /* |
| * It is typical for stations to be removed when we are |
| * going down. Return success since device will be down |
| * soon anyway |
| */ |
| return 0; |
| } |
| |
| D_ASSOC("Removing STA from driver:%d %pM\n", sta_id, addr); |
| |
| if (WARN_ON(sta_id == IL_INVALID_STATION)) |
| return -EINVAL; |
| |
| spin_lock_irqsave(&il->sta_lock, flags); |
| |
| if (!(il->stations[sta_id].used & IL_STA_DRIVER_ACTIVE)) { |
| D_INFO("Removing %pM but non DRIVER active\n", addr); |
| goto out_err; |
| } |
| |
| if (!(il->stations[sta_id].used & IL_STA_UCODE_ACTIVE)) { |
| D_INFO("Removing %pM but non UCODE active\n", addr); |
| goto out_err; |
| } |
| |
| if (il->stations[sta_id].used & IL_STA_LOCAL) { |
| kfree(il->stations[sta_id].lq); |
| il->stations[sta_id].lq = NULL; |
| } |
| |
| il->stations[sta_id].used &= ~IL_STA_DRIVER_ACTIVE; |
| |
| il->num_stations--; |
| |
| BUG_ON(il->num_stations < 0); |
| |
| spin_unlock_irqrestore(&il->sta_lock, flags); |
| |
| return il_send_remove_station(il, addr, sta_id, false); |
| out_err: |
| spin_unlock_irqrestore(&il->sta_lock, flags); |
| return -EINVAL; |
| } |
| EXPORT_SYMBOL_GPL(il_remove_station); |
| |
| /** |
| * il_clear_ucode_stations - clear ucode station table bits |
| * |
| * This function clears all the bits in the driver indicating |
| * which stations are active in the ucode. Call when something |
| * other than explicit station management would cause this in |
| * the ucode, e.g. unassociated RXON. |
| */ |
| void |
| il_clear_ucode_stations(struct il_priv *il) |
| { |
| int i; |
| unsigned long flags_spin; |
| bool cleared = false; |
| |
| D_INFO("Clearing ucode stations in driver\n"); |
| |
| spin_lock_irqsave(&il->sta_lock, flags_spin); |
| for (i = 0; i < il->hw_params.max_stations; i++) { |
| if (il->stations[i].used & IL_STA_UCODE_ACTIVE) { |
| D_INFO("Clearing ucode active for station %d\n", i); |
| il->stations[i].used &= ~IL_STA_UCODE_ACTIVE; |
| cleared = true; |
| } |
| } |
| spin_unlock_irqrestore(&il->sta_lock, flags_spin); |
| |
| if (!cleared) |
| D_INFO("No active stations found to be cleared\n"); |
| } |
| EXPORT_SYMBOL(il_clear_ucode_stations); |
| |
| /** |
| * il_restore_stations() - Restore driver known stations to device |
| * |
| * All stations considered active by driver, but not present in ucode, is |
| * restored. |
| * |
| * Function sleeps. |
| */ |
| void |
| il_restore_stations(struct il_priv *il) |
| { |
| struct il_addsta_cmd sta_cmd; |
| struct il_link_quality_cmd lq; |
| unsigned long flags_spin; |
| int i; |
| bool found = false; |
| int ret; |
| bool send_lq; |
| |
| if (!il_is_ready(il)) { |
| D_INFO("Not ready yet, not restoring any stations.\n"); |
| return; |
| } |
| |
| D_ASSOC("Restoring all known stations ... start.\n"); |
| spin_lock_irqsave(&il->sta_lock, flags_spin); |
| for (i = 0; i < il->hw_params.max_stations; i++) { |
| if ((il->stations[i].used & IL_STA_DRIVER_ACTIVE) && |
| !(il->stations[i].used & IL_STA_UCODE_ACTIVE)) { |
| D_ASSOC("Restoring sta %pM\n", |
| il->stations[i].sta.sta.addr); |
| il->stations[i].sta.mode = 0; |
| il->stations[i].used |= IL_STA_UCODE_INPROGRESS; |
| found = true; |
| } |
| } |
| |
| for (i = 0; i < il->hw_params.max_stations; i++) { |
| if ((il->stations[i].used & IL_STA_UCODE_INPROGRESS)) { |
| memcpy(&sta_cmd, &il->stations[i].sta, |
| sizeof(struct il_addsta_cmd)); |
| send_lq = false; |
| if (il->stations[i].lq) { |
| memcpy(&lq, il->stations[i].lq, |
| sizeof(struct il_link_quality_cmd)); |
| send_lq = true; |
| } |
| spin_unlock_irqrestore(&il->sta_lock, flags_spin); |
| ret = il_send_add_sta(il, &sta_cmd, CMD_SYNC); |
| if (ret) { |
| spin_lock_irqsave(&il->sta_lock, flags_spin); |
| IL_ERR("Adding station %pM failed.\n", |
| il->stations[i].sta.sta.addr); |
| il->stations[i].used &= ~IL_STA_DRIVER_ACTIVE; |
| il->stations[i].used &= |
| ~IL_STA_UCODE_INPROGRESS; |
| spin_unlock_irqrestore(&il->sta_lock, |
| flags_spin); |
| } |
| /* |
| * Rate scaling has already been initialized, send |
| * current LQ command |
| */ |
| if (send_lq) |
| il_send_lq_cmd(il, &lq, CMD_SYNC, true); |
| spin_lock_irqsave(&il->sta_lock, flags_spin); |
| il->stations[i].used &= ~IL_STA_UCODE_INPROGRESS; |
| } |
| } |
| |
| spin_unlock_irqrestore(&il->sta_lock, flags_spin); |
| if (!found) |
| D_INFO("Restoring all known stations" |
| " .... no stations to be restored.\n"); |
| else |
| D_INFO("Restoring all known stations" " .... complete.\n"); |
| } |
| EXPORT_SYMBOL(il_restore_stations); |
| |
| int |
| il_get_free_ucode_key_idx(struct il_priv *il) |
| { |
| int i; |
| |
| for (i = 0; i < il->sta_key_max_num; i++) |
| if (!test_and_set_bit(i, &il->ucode_key_table)) |
| return i; |
| |
| return WEP_INVALID_OFFSET; |
| } |
| EXPORT_SYMBOL(il_get_free_ucode_key_idx); |
| |
| void |
| il_dealloc_bcast_stations(struct il_priv *il) |
| { |
| unsigned long flags; |
| int i; |
| |
| spin_lock_irqsave(&il->sta_lock, flags); |
| for (i = 0; i < il->hw_params.max_stations; i++) { |
| if (!(il->stations[i].used & IL_STA_BCAST)) |
| continue; |
| |
| il->stations[i].used &= ~IL_STA_UCODE_ACTIVE; |
| il->num_stations--; |
| BUG_ON(il->num_stations < 0); |
| kfree(il->stations[i].lq); |
| il->stations[i].lq = NULL; |
| } |
| spin_unlock_irqrestore(&il->sta_lock, flags); |
| } |
| EXPORT_SYMBOL_GPL(il_dealloc_bcast_stations); |
| |
| #ifdef CONFIG_IWLEGACY_DEBUG |
| static void |
| il_dump_lq_cmd(struct il_priv *il, struct il_link_quality_cmd *lq) |
| { |
| int i; |
| D_RATE("lq station id 0x%x\n", lq->sta_id); |
| D_RATE("lq ant 0x%X 0x%X\n", lq->general_params.single_stream_ant_msk, |
| lq->general_params.dual_stream_ant_msk); |
| |
| for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) |
| D_RATE("lq idx %d 0x%X\n", i, lq->rs_table[i].rate_n_flags); |
| } |
| #else |
| static inline void |
| il_dump_lq_cmd(struct il_priv *il, struct il_link_quality_cmd *lq) |
| { |
| } |
| #endif |
| |
| /** |
| * il_is_lq_table_valid() - Test one aspect of LQ cmd for validity |
| * |
| * It sometimes happens when a HT rate has been in use and we |
| * loose connectivity with AP then mac80211 will first tell us that the |
| * current channel is not HT anymore before removing the station. In such a |
| * scenario the RXON flags will be updated to indicate we are not |
| * communicating HT anymore, but the LQ command may still contain HT rates. |
| * Test for this to prevent driver from sending LQ command between the time |
| * RXON flags are updated and when LQ command is updated. |
| */ |
| static bool |
| il_is_lq_table_valid(struct il_priv *il, struct il_link_quality_cmd *lq) |
| { |
| int i; |
| |
| if (il->ht.enabled) |
| return true; |
| |
| D_INFO("Channel %u is not an HT channel\n", il->active.channel); |
| for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) { |
| if (le32_to_cpu(lq->rs_table[i].rate_n_flags) & RATE_MCS_HT_MSK) { |
| D_INFO("idx %d of LQ expects HT channel\n", i); |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| /** |
| * il_send_lq_cmd() - Send link quality command |
| * @init: This command is sent as part of station initialization right |
| * after station has been added. |
| * |
| * The link quality command is sent as the last step of station creation. |
| * This is the special case in which init is set and we call a callback in |
| * this case to clear the state indicating that station creation is in |
| * progress. |
| */ |
| int |
| il_send_lq_cmd(struct il_priv *il, struct il_link_quality_cmd *lq, |
| u8 flags, bool init) |
| { |
| int ret = 0; |
| unsigned long flags_spin; |
| |
| struct il_host_cmd cmd = { |
| .id = C_TX_LINK_QUALITY_CMD, |
| .len = sizeof(struct il_link_quality_cmd), |
| .flags = flags, |
| .data = lq, |
| }; |
| |
| if (WARN_ON(lq->sta_id == IL_INVALID_STATION)) |
| return -EINVAL; |
| |
| spin_lock_irqsave(&il->sta_lock, flags_spin); |
| if (!(il->stations[lq->sta_id].used & IL_STA_DRIVER_ACTIVE)) { |
| spin_unlock_irqrestore(&il->sta_lock, flags_spin); |
| return -EINVAL; |
| } |
| spin_unlock_irqrestore(&il->sta_lock, flags_spin); |
| |
| il_dump_lq_cmd(il, lq); |
| BUG_ON(init && (cmd.flags & CMD_ASYNC)); |
| |
| if (il_is_lq_table_valid(il, lq)) |
| ret = il_send_cmd(il, &cmd); |
| else |
| ret = -EINVAL; |
| |
| if (cmd.flags & CMD_ASYNC) |
| return ret; |
| |
| if (init) { |
| D_INFO("init LQ command complete," |
| " clearing sta addition status for sta %d\n", |
| lq->sta_id); |
| spin_lock_irqsave(&il->sta_lock, flags_spin); |
| il->stations[lq->sta_id].used &= ~IL_STA_UCODE_INPROGRESS; |
| spin_unlock_irqrestore(&il->sta_lock, flags_spin); |
| } |
| return ret; |
| } |
| EXPORT_SYMBOL(il_send_lq_cmd); |
| |
| int |
| il_mac_sta_remove(struct ieee80211_hw *hw, struct ieee80211_vif *vif, |
| struct ieee80211_sta *sta) |
| { |
| struct il_priv *il = hw->priv; |
| struct il_station_priv_common *sta_common = (void *)sta->drv_priv; |
| int ret; |
| |
| mutex_lock(&il->mutex); |
| D_MAC80211("enter station %pM\n", sta->addr); |
| |
| ret = il_remove_station(il, sta_common->sta_id, sta->addr); |
| if (ret) |
| IL_ERR("Error removing station %pM\n", sta->addr); |
| |
| D_MAC80211("leave ret %d\n", ret); |
| mutex_unlock(&il->mutex); |
| |
| return ret; |
| } |
| EXPORT_SYMBOL(il_mac_sta_remove); |
| |
| /************************** RX-FUNCTIONS ****************************/ |
| /* |
| * Rx theory of operation |
| * |
| * Driver allocates a circular buffer of Receive Buffer Descriptors (RBDs), |
| * each of which point to Receive Buffers to be filled by the NIC. These get |
| * used not only for Rx frames, but for any command response or notification |
| * from the NIC. The driver and NIC manage the Rx buffers by means |
| * of idxes into the circular buffer. |
| * |
| * Rx Queue Indexes |
| * The host/firmware share two idx registers for managing the Rx buffers. |
| * |
| * The READ idx maps to the first position that the firmware may be writing |
| * to -- the driver can read up to (but not including) this position and get |
| * good data. |
| * The READ idx is managed by the firmware once the card is enabled. |
| * |
| * The WRITE idx maps to the last position the driver has read from -- the |
| * position preceding WRITE is the last slot the firmware can place a packet. |
| * |
| * The queue is empty (no good data) if WRITE = READ - 1, and is full if |
| * WRITE = READ. |
| * |
| * During initialization, the host sets up the READ queue position to the first |
| * IDX position, and WRITE to the last (READ - 1 wrapped) |
| * |
| * When the firmware places a packet in a buffer, it will advance the READ idx |
| * and fire the RX interrupt. The driver can then query the READ idx and |
| * process as many packets as possible, moving the WRITE idx forward as it |
| * resets the Rx queue buffers with new memory. |
| * |
| * The management in the driver is as follows: |
| * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When |
| * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled |
| * to replenish the iwl->rxq->rx_free. |
| * + In il_rx_replenish (scheduled) if 'processed' != 'read' then the |
| * iwl->rxq is replenished and the READ IDX is updated (updating the |
| * 'processed' and 'read' driver idxes as well) |
| * + A received packet is processed and handed to the kernel network stack, |
| * detached from the iwl->rxq. The driver 'processed' idx is updated. |
| * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free |
| * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ |
| * IDX is not incremented and iwl->status(RX_STALLED) is set. If there |
| * were enough free buffers and RX_STALLED is set it is cleared. |
| * |
| * |
| * Driver sequence: |
| * |
| * il_rx_queue_alloc() Allocates rx_free |
| * il_rx_replenish() Replenishes rx_free list from rx_used, and calls |
| * il_rx_queue_restock |
| * il_rx_queue_restock() Moves available buffers from rx_free into Rx |
| * queue, updates firmware pointers, and updates |
| * the WRITE idx. If insufficient rx_free buffers |
| * are available, schedules il_rx_replenish |
| * |
| * -- enable interrupts -- |
| * ISR - il_rx() Detach il_rx_bufs from pool up to the |
| * READ IDX, detaching the SKB from the pool. |
| * Moves the packet buffer from queue to rx_used. |
| * Calls il_rx_queue_restock to refill any empty |
| * slots. |
| * ... |
| * |
| */ |
| |
| /** |
| * il_rx_queue_space - Return number of free slots available in queue. |
| */ |
| int |
| il_rx_queue_space(const struct il_rx_queue *q) |
| { |
| int s = q->read - q->write; |
| if (s <= 0) |
| s += RX_QUEUE_SIZE; |
| /* keep some buffer to not confuse full and empty queue */ |
| s -= 2; |
| if (s < 0) |
| s = 0; |
| return s; |
| } |
| EXPORT_SYMBOL(il_rx_queue_space); |
| |
| /** |
| * il_rx_queue_update_write_ptr - Update the write pointer for the RX queue |
| */ |
| void |
| il_rx_queue_update_write_ptr(struct il_priv *il, struct il_rx_queue *q) |
| { |
| unsigned long flags; |
| u32 rx_wrt_ptr_reg = il->hw_params.rx_wrt_ptr_reg; |
| u32 reg; |
| |
| spin_lock_irqsave(&q->lock, flags); |
| |
| if (q->need_update == 0) |
| goto exit_unlock; |
| |
| /* If power-saving is in use, make sure device is awake */ |
| if (test_bit(S_POWER_PMI, &il->status)) { |
| reg = _il_rd(il, CSR_UCODE_DRV_GP1); |
| |
| if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) { |
| D_INFO("Rx queue requesting wakeup," " GP1 = 0x%x\n", |
| reg); |
| il_set_bit(il, CSR_GP_CNTRL, |
| CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ); |
| goto exit_unlock; |
| } |
| |
| q->write_actual = (q->write & ~0x7); |
| il_wr(il, rx_wrt_ptr_reg, q->write_actual); |
| |
| /* Else device is assumed to be awake */ |
| } else { |
| /* Device expects a multiple of 8 */ |
| q->write_actual = (q->write & ~0x7); |
| il_wr(il, rx_wrt_ptr_reg, q->write_actual); |
| } |
| |
| q->need_update = 0; |
| |
| exit_unlock: |
| spin_unlock_irqrestore(&q->lock, flags); |
| } |
| EXPORT_SYMBOL(il_rx_queue_update_write_ptr); |
| |
| int |
| il_rx_queue_alloc(struct il_priv *il) |
| { |
| struct il_rx_queue *rxq = &il->rxq; |
| struct device *dev = &il->pci_dev->dev; |
| int i; |
| |
| spin_lock_init(&rxq->lock); |
| INIT_LIST_HEAD(&rxq->rx_free); |
| INIT_LIST_HEAD(&rxq->rx_used); |
| |
| /* Alloc the circular buffer of Read Buffer Descriptors (RBDs) */ |
| rxq->bd = |
| dma_alloc_coherent(dev, 4 * RX_QUEUE_SIZE, &rxq->bd_dma, |
| GFP_KERNEL); |
| if (!rxq->bd) |
| goto err_bd; |
| |
| rxq->rb_stts = |
| dma_alloc_coherent(dev, sizeof(struct il_rb_status), |
| &rxq->rb_stts_dma, GFP_KERNEL); |
| if (!rxq->rb_stts) |
| goto err_rb; |
| |
| /* Fill the rx_used queue with _all_ of the Rx buffers */ |
| for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) |
| list_add_tail(&rxq->pool[i].list, &rxq->rx_used); |
| |
| /* Set us so that we have processed and used all buffers, but have |
| * not restocked the Rx queue with fresh buffers */ |
| rxq->read = rxq->write = 0; |
| rxq->write_actual = 0; |
| rxq->free_count = 0; |
| rxq->need_update = 0; |
| return 0; |
| |
| err_rb: |
| dma_free_coherent(&il->pci_dev->dev, 4 * RX_QUEUE_SIZE, rxq->bd, |
| rxq->bd_dma); |
| err_bd: |
| return -ENOMEM; |
| } |
| EXPORT_SYMBOL(il_rx_queue_alloc); |
| |
| void |
| il_hdl_spectrum_measurement(struct il_priv *il, struct il_rx_buf *rxb) |
| { |
| struct il_rx_pkt *pkt = rxb_addr(rxb); |
| struct il_spectrum_notification *report = &(pkt->u.spectrum_notif); |
| |
| if (!report->state) { |
| D_11H("Spectrum Measure Notification: Start\n"); |
| return; |
| } |
| |
| memcpy(&il->measure_report, report, sizeof(*report)); |
| il->measurement_status |= MEASUREMENT_READY; |
| } |
| EXPORT_SYMBOL(il_hdl_spectrum_measurement); |
| |
| /* |
| * returns non-zero if packet should be dropped |
| */ |
| int |
| il_set_decrypted_flag(struct il_priv *il, struct ieee80211_hdr *hdr, |
| u32 decrypt_res, struct ieee80211_rx_status *stats) |
| { |
| u16 fc = le16_to_cpu(hdr->frame_control); |
| |
| /* |
| * All contexts have the same setting here due to it being |
| * a module parameter, so OK to check any context. |
| */ |
| if (il->active.filter_flags & RXON_FILTER_DIS_DECRYPT_MSK) |
| return 0; |
| |
| if (!(fc & IEEE80211_FCTL_PROTECTED)) |
| return 0; |
| |
| D_RX("decrypt_res:0x%x\n", decrypt_res); |
| switch (decrypt_res & RX_RES_STATUS_SEC_TYPE_MSK) { |
| case RX_RES_STATUS_SEC_TYPE_TKIP: |
| /* The uCode has got a bad phase 1 Key, pushes the packet. |
| * Decryption will be done in SW. */ |
| if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) == |
| RX_RES_STATUS_BAD_KEY_TTAK) |
| break; |
| |
| case RX_RES_STATUS_SEC_TYPE_WEP: |
| if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) == |
| RX_RES_STATUS_BAD_ICV_MIC) { |
| /* bad ICV, the packet is destroyed since the |
| * decryption is inplace, drop it */ |
| D_RX("Packet destroyed\n"); |
| return -1; |
| } |
| case RX_RES_STATUS_SEC_TYPE_CCMP: |
| if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) == |
| RX_RES_STATUS_DECRYPT_OK) { |
| D_RX("hw decrypt successfully!!!\n"); |
| stats->flag |= RX_FLAG_DECRYPTED; |
| } |
| break; |
| |
| default: |
| break; |
| } |
| return 0; |
| } |
| EXPORT_SYMBOL(il_set_decrypted_flag); |
| |
| /** |
| * il_txq_update_write_ptr - Send new write idx to hardware |
| */ |
| void |
| il_txq_update_write_ptr(struct il_priv *il, struct il_tx_queue *txq) |
| { |
| u32 reg = 0; |
| int txq_id = txq->q.id; |
| |
| if (txq->need_update == 0) |
| return; |
| |
| /* if we're trying to save power */ |
| if (test_bit(S_POWER_PMI, &il->status)) { |
| /* wake up nic if it's powered down ... |
| * uCode will wake up, and interrupt us again, so next |
| * time we'll skip this part. */ |
| reg = _il_rd(il, CSR_UCODE_DRV_GP1); |
| |
| if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) { |
| D_INFO("Tx queue %d requesting wakeup," " GP1 = 0x%x\n", |
| txq_id, reg); |
| il_set_bit(il, CSR_GP_CNTRL, |
| CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ); |
| return; |
| } |
| |
| il_wr(il, HBUS_TARG_WRPTR, txq->q.write_ptr | (txq_id << 8)); |
| |
| /* |
| * else not in power-save mode, |
| * uCode will never sleep when we're |
| * trying to tx (during RFKILL, we're not trying to tx). |
| */ |
| } else |
| _il_wr(il, HBUS_TARG_WRPTR, txq->q.write_ptr | (txq_id << 8)); |
| txq->need_update = 0; |
| } |
| EXPORT_SYMBOL(il_txq_update_write_ptr); |
| |
| /** |
| * il_tx_queue_unmap - Unmap any remaining DMA mappings and free skb's |
| */ |
| void |
| il_tx_queue_unmap(struct il_priv *il, int txq_id) |
| { |
| struct il_tx_queue *txq = &il->txq[txq_id]; |
| struct il_queue *q = &txq->q; |
| |
| if (q->n_bd == 0) |
| return; |
| |
| while (q->write_ptr != q->read_ptr) { |
| il->ops->txq_free_tfd(il, txq); |
| q->read_ptr = il_queue_inc_wrap(q->read_ptr, q->n_bd); |
| } |
| } |
| EXPORT_SYMBOL(il_tx_queue_unmap); |
| |
| /** |
| * il_tx_queue_free - Deallocate DMA queue. |
| * @txq: Transmit queue to deallocate. |
| * |
| * Empty queue by removing and destroying all BD's. |
| * Free all buffers. |
| * 0-fill, but do not free "txq" descriptor structure. |
| */ |
| void |
| il_tx_queue_free(struct il_priv *il, int txq_id) |
| { |
| struct il_tx_queue *txq = &il->txq[txq_id]; |
| struct device *dev = &il->pci_dev->dev; |
| int i; |
| |
| il_tx_queue_unmap(il, txq_id); |
| |
| /* De-alloc array of command/tx buffers */ |
| for (i = 0; i < TFD_TX_CMD_SLOTS; i++) |
| kfree(txq->cmd[i]); |
| |
| /* De-alloc circular buffer of TFDs */ |
| if (txq->q.n_bd) |
| dma_free_coherent(dev, il->hw_params.tfd_size * txq->q.n_bd, |
| txq->tfds, txq->q.dma_addr); |
| |
| /* De-alloc array of per-TFD driver data */ |
| kfree(txq->skbs); |
| txq->skbs = NULL; |
| |
| /* deallocate arrays */ |
| kfree(txq->cmd); |
| kfree(txq->meta); |
| txq->cmd = NULL; |
| txq->meta = NULL; |
| |
| /* 0-fill queue descriptor structure */ |
| memset(txq, 0, sizeof(*txq)); |
| } |
| EXPORT_SYMBOL(il_tx_queue_free); |
| |
| /** |
| * il_cmd_queue_unmap - Unmap any remaining DMA mappings from command queue |
| */ |
| void |
| il_cmd_queue_unmap(struct il_priv *il) |
| { |
| struct il_tx_queue *txq = &il->txq[il->cmd_queue]; |
| struct il_queue *q = &txq->q; |
| int i; |
| |
| if (q->n_bd == 0) |
| return; |
| |
| while (q->read_ptr != q->write_ptr) { |
| i = il_get_cmd_idx(q, q->read_ptr, 0); |
| |
| if (txq->meta[i].flags & CMD_MAPPED) { |
| pci_unmap_single(il->pci_dev, |
| dma_unmap_addr(&txq->meta[i], mapping), |
| dma_unmap_len(&txq->meta[i], len), |
| PCI_DMA_BIDIRECTIONAL); |
| txq->meta[i].flags = 0; |
| } |
| |
| q->read_ptr = il_queue_inc_wrap(q->read_ptr, q->n_bd); |
| } |
| |
| i = q->n_win; |
| if (txq->meta[i].flags & CMD_MAPPED) { |
| pci_unmap_single(il->pci_dev, |
| dma_unmap_addr(&txq->meta[i], mapping), |
| dma_unmap_len(&txq->meta[i], len), |
| PCI_DMA_BIDIRECTIONAL); |
| txq->meta[i].flags = 0; |
| } |
| } |
| EXPORT_SYMBOL(il_cmd_queue_unmap); |
| |
| /** |
| * il_cmd_queue_free - Deallocate DMA queue. |
| * @txq: Transmit queue to deallocate. |
| * |
| * Empty queue by removing and destroying all BD's. |
| * Free all buffers. |
| * 0-fill, but do not free "txq" descriptor structure. |
| */ |
| void |
| il_cmd_queue_free(struct il_priv *il) |
| { |
| struct il_tx_queue *txq = &il->txq[il->cmd_queue]; |
| struct device *dev = &il->pci_dev->dev; |
| int i; |
| |
| il_cmd_queue_unmap(il); |
| |
| /* De-alloc array of command/tx buffers */ |
| for (i = 0; i <= TFD_CMD_SLOTS; i++) |
| kfree(txq->cmd[i]); |
| |
| /* De-alloc circular buffer of TFDs */ |
| if (txq->q.n_bd) |
| dma_free_coherent(dev, il->hw_params.tfd_size * txq->q.n_bd, |
| txq->tfds, txq->q.dma_addr); |
| |
| /* deallocate arrays */ |
| kfree(txq->cmd); |
| kfree(txq->meta); |
| txq->cmd = NULL; |
| txq->meta = NULL; |
| |
| /* 0-fill queue descriptor structure */ |
| memset(txq, 0, sizeof(*txq)); |
| } |
| EXPORT_SYMBOL(il_cmd_queue_free); |
| |
| /*************** DMA-QUEUE-GENERAL-FUNCTIONS ***** |
| * DMA services |
| * |
| * Theory of operation |
| * |
| * A Tx or Rx queue resides in host DRAM, and is comprised of a circular buffer |
| * of buffer descriptors, each of which points to one or more data buffers for |
| * the device to read from or fill. Driver and device exchange status of each |
| * queue via "read" and "write" pointers. Driver keeps minimum of 2 empty |
| * entries in each circular buffer, to protect against confusing empty and full |
| * queue states. |
| * |
| * The device reads or writes the data in the queues via the device's several |
| * DMA/FIFO channels. Each queue is mapped to a single DMA channel. |
| * |
| * For Tx queue, there are low mark and high mark limits. If, after queuing |
| * the packet for Tx, free space become < low mark, Tx queue stopped. When |
| * reclaiming packets (on 'tx done IRQ), if free space become > high mark, |
| * Tx queue resumed. |
| * |
| * See more detailed info in 4965.h. |
| ***************************************************/ |
| |
| int |
| il_queue_space(const struct il_queue *q) |
| { |
| int s = q->read_ptr - q->write_ptr; |
| |
| if (q->read_ptr > q->write_ptr) |
| s -= q->n_bd; |
| |
| if (s <= 0) |
| s += q->n_win; |
| /* keep some reserve to not confuse empty and full situations */ |
| s -= 2; |
| if (s < 0) |
| s = 0; |
| return s; |
| } |
| EXPORT_SYMBOL(il_queue_space); |
| |
| |
| /** |
| * il_queue_init - Initialize queue's high/low-water and read/write idxes |
| */ |
| static int |
| il_queue_init(struct il_priv *il, struct il_queue *q, int slots, u32 id) |
| { |
| /* |
| * TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise |
| * il_queue_inc_wrap and il_queue_dec_wrap are broken. |
| */ |
| BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX & (TFD_QUEUE_SIZE_MAX - 1)); |
| /* FIXME: remove q->n_bd */ |
| q->n_bd = TFD_QUEUE_SIZE_MAX; |
| |
| q->n_win = slots; |
| q->id = id; |
| |
| /* slots_must be power-of-two size, otherwise |
| * il_get_cmd_idx is broken. */ |
| BUG_ON(!is_power_of_2(slots)); |
| |
| q->low_mark = q->n_win / 4; |
| if (q->low_mark < 4) |
| q->low_mark = 4; |
| |
| q->high_mark = q->n_win / 8; |
| if (q->high_mark < 2) |
| q->high_mark = 2; |
| |
| q->write_ptr = q->read_ptr = 0; |
| |
| return 0; |
| } |
| |
| /** |
| * il_tx_queue_alloc - Alloc driver data and TFD CB for one Tx/cmd queue |
| */ |
| static int |
| il_tx_queue_alloc(struct il_priv *il, struct il_tx_queue *txq, u32 id) |
| { |
| struct device *dev = &il->pci_dev->dev; |
| size_t tfd_sz = il->hw_params.tfd_size * TFD_QUEUE_SIZE_MAX; |
| |
| /* Driver ilate data, only for Tx (not command) queues, |
| * not shared with device. */ |
| if (id != il->cmd_queue) { |
| txq->skbs = kcalloc(TFD_QUEUE_SIZE_MAX, sizeof(struct skb *), |
| GFP_KERNEL); |
| if (!txq->skbs) { |
| IL_ERR("Fail to alloc skbs\n"); |
| goto error; |
| } |
| } else |
| txq->skbs = NULL; |
| |
| /* Circular buffer of transmit frame descriptors (TFDs), |
| * shared with device */ |
| txq->tfds = |
| dma_alloc_coherent(dev, tfd_sz, &txq->q.dma_addr, GFP_KERNEL); |
| if (!txq->tfds) { |
| IL_ERR("Fail to alloc TFDs\n"); |
| goto error; |
| } |
| txq->q.id = id; |
| |
| return 0; |
| |
| error: |
| kfree(txq->skbs); |
| txq->skbs = NULL; |
| |
| return -ENOMEM; |
| } |
| |
| /** |
| * il_tx_queue_init - Allocate and initialize one tx/cmd queue |
| */ |
| int |
| il_tx_queue_init(struct il_priv *il, u32 txq_id) |
| { |
| int i, len, ret; |
| int slots, actual_slots; |
| struct il_tx_queue *txq = &il->txq[txq_id]; |
| |
| /* |
| * Alloc buffer array for commands (Tx or other types of commands). |
| * For the command queue (#4/#9), allocate command space + one big |
| * command for scan, since scan command is very huge; the system will |
| * not have two scans at the same time, so only one is needed. |
| * For normal Tx queues (all other queues), no super-size command |
| * space is needed. |
| */ |
| if (txq_id == il->cmd_queue) { |
| slots = TFD_CMD_SLOTS; |
| actual_slots = slots + 1; |
| } else { |
| slots = TFD_TX_CMD_SLOTS; |
| actual_slots = slots; |
| } |
| |
| txq->meta = |
| kzalloc(sizeof(struct il_cmd_meta) * actual_slots, GFP_KERNEL); |
| txq->cmd = |
| kzalloc(sizeof(struct il_device_cmd *) * actual_slots, GFP_KERNEL); |
| |
| if (!txq->meta || !txq->cmd) |
| goto out_free_arrays; |
| |
| len = sizeof(struct il_device_cmd); |
| for (i = 0; i < actual_slots; i++) { |
| /* only happens for cmd queue */ |
| if (i == slots) |
| len = IL_MAX_CMD_SIZE; |
| |
| txq->cmd[i] = kmalloc(len, GFP_KERNEL); |
| if (!txq->cmd[i]) |
| goto err; |
| } |
| |
| /* Alloc driver data array and TFD circular buffer */ |
| ret = il_tx_queue_alloc(il, txq, txq_id); |
| if (ret) |
| goto err; |
| |
| txq->need_update = 0; |
| |
| /* |
| * For the default queues 0-3, set up the swq_id |
| * already -- all others need to get one later |
| * (if they need one at all). |
| */ |
| if (txq_id < 4) |
| il_set_swq_id(txq, txq_id, txq_id); |
| |
| /* Initialize queue's high/low-water marks, and head/tail idxes */ |
| il_queue_init(il, &txq->q, slots, txq_id); |
| |
| /* Tell device where to find queue */ |
| il->ops->txq_init(il, txq); |
| |
| return 0; |
| err: |
| for (i = 0; i < actual_slots; i++) |
| kfree(txq->cmd[i]); |
| out_free_arrays: |
| kfree(txq->meta); |
| kfree(txq->cmd); |
| |
| return -ENOMEM; |
| } |
| EXPORT_SYMBOL(il_tx_queue_init); |
| |
| void |
| il_tx_queue_reset(struct il_priv *il, u32 txq_id) |
| { |
| int slots, actual_slots; |
| struct il_tx_queue *txq = &il->txq[txq_id]; |
| |
| if (txq_id == il->cmd_queue) { |
| slots = TFD_CMD_SLOTS; |
| actual_slots = TFD_CMD_SLOTS + 1; |
| } else { |
| slots = TFD_TX_CMD_SLOTS; |
| actual_slots = TFD_TX_CMD_SLOTS; |
| } |
| |
| memset(txq->meta, 0, sizeof(struct il_cmd_meta) * actual_slots); |
| txq->need_update = 0; |
| |
| /* Initialize queue's high/low-water marks, and head/tail idxes */ |
| il_queue_init(il, &txq->q, slots, txq_id); |
| |
| /* Tell device where to find queue */ |
| il->ops->txq_init(il, txq); |
| } |
| EXPORT_SYMBOL(il_tx_queue_reset); |
| |
| /*************** HOST COMMAND QUEUE FUNCTIONS *****/ |
| |
| /** |
| * il_enqueue_hcmd - enqueue a uCode command |
| * @il: device ilate data point |
| * @cmd: a point to the ucode command structure |
| * |
| * The function returns < 0 values to indicate the operation is |
| * failed. On success, it turns the idx (> 0) of command in the |
| * command queue. |
| */ |
| int |
| il_enqueue_hcmd(struct il_priv *il, struct il_host_cmd *cmd) |
| { |
| struct il_tx_queue *txq = &il->txq[il->cmd_queue]; |
| struct il_queue *q = &txq->q; |
| struct il_device_cmd *out_cmd; |
| struct il_cmd_meta *out_meta; |
| dma_addr_t phys_addr; |
| unsigned long flags; |
| int len; |
| u32 idx; |
| u16 fix_size; |
| |
| cmd->len = il->ops->get_hcmd_size(cmd->id, cmd->len); |
| fix_size = (u16) (cmd->len + sizeof(out_cmd->hdr)); |
| |
| /* If any of the command structures end up being larger than |
| * the TFD_MAX_PAYLOAD_SIZE, and it sent as a 'small' command then |
| * we will need to increase the size of the TFD entries |
| * Also, check to see if command buffer should not exceed the size |
| * of device_cmd and max_cmd_size. */ |
| BUG_ON((fix_size > TFD_MAX_PAYLOAD_SIZE) && |
| !(cmd->flags & CMD_SIZE_HUGE)); |
| BUG_ON(fix_size > IL_MAX_CMD_SIZE); |
| |
| if (il_is_rfkill(il) || il_is_ctkill(il)) { |
| IL_WARN("Not sending command - %s KILL\n", |
| il_is_rfkill(il) ? "RF" : "CT"); |
| return -EIO; |
| } |
| |
| spin_lock_irqsave(&il->hcmd_lock, flags); |
| |
| if (il_queue_space(q) < ((cmd->flags & CMD_ASYNC) ? 2 : 1)) { |
| spin_unlock_irqrestore(&il->hcmd_lock, flags); |
| |
| IL_ERR("Restarting adapter due to command queue full\n"); |
| queue_work(il->workqueue, &il->restart); |
| return -ENOSPC; |
| } |
| |
| idx = il_get_cmd_idx(q, q->write_ptr, cmd->flags & CMD_SIZE_HUGE); |
| out_cmd = txq->cmd[idx]; |
| out_meta = &txq->meta[idx]; |
| |
| if (WARN_ON(out_meta->flags & CMD_MAPPED)) { |
| spin_unlock_irqrestore(&il->hcmd_lock, flags); |
| return -ENOSPC; |
| } |
| |
| memset(out_meta, 0, sizeof(*out_meta)); /* re-initialize to NULL */ |
| out_meta->flags = cmd->flags | CMD_MAPPED; |
| if (cmd->flags & CMD_WANT_SKB) |
| out_meta->source = cmd; |
| if (cmd->flags & CMD_ASYNC) |
| out_meta->callback = cmd->callback; |
| |
| out_cmd->hdr.cmd = cmd->id; |
| memcpy(&out_cmd->cmd.payload, cmd->data, cmd->len); |
| |
| /* At this point, the out_cmd now has all of the incoming cmd |
| * information */ |
| |
| out_cmd->hdr.flags = 0; |
| out_cmd->hdr.sequence = |
| cpu_to_le16(QUEUE_TO_SEQ(il->cmd_queue) | IDX_TO_SEQ(q->write_ptr)); |
| if (cmd->flags & CMD_SIZE_HUGE) |
| out_cmd->hdr.sequence |= SEQ_HUGE_FRAME; |
| len = sizeof(struct il_device_cmd); |
| if (idx == TFD_CMD_SLOTS) |
| len = IL_MAX_CMD_SIZE; |
| |
| #ifdef CONFIG_IWLEGACY_DEBUG |
| switch (out_cmd->hdr.cmd) { |
| case C_TX_LINK_QUALITY_CMD: |
| case C_SENSITIVITY: |
| D_HC_DUMP("Sending command %s (#%x), seq: 0x%04X, " |
| "%d bytes at %d[%d]:%d\n", |
| il_get_cmd_string(out_cmd->hdr.cmd), out_cmd->hdr.cmd, |
| le16_to_cpu(out_cmd->hdr.sequence), fix_size, |
| q->write_ptr, idx, il->cmd_queue); |
| break; |
| default: |
| D_HC("Sending command %s (#%x), seq: 0x%04X, " |
| "%d bytes at %d[%d]:%d\n", |
| il_get_cmd_string(out_cmd->hdr.cmd), out_cmd->hdr.cmd, |
| le16_to_cpu(out_cmd->hdr.sequence), fix_size, q->write_ptr, |
| idx, il->cmd_queue); |
| } |
| #endif |
| txq->need_update = 1; |
| |
| if (il->ops->txq_update_byte_cnt_tbl) |
| /* Set up entry in queue's byte count circular buffer */ |
| il->ops->txq_update_byte_cnt_tbl(il, txq, 0); |
| |
| phys_addr = |
| pci_map_single(il->pci_dev, &out_cmd->hdr, fix_size, |
| PCI_DMA_BIDIRECTIONAL); |
| dma_unmap_addr_set(out_meta, mapping, phys_addr); |
| dma_unmap_len_set(out_meta, len, fix_size); |
| |
| il->ops->txq_attach_buf_to_tfd(il, txq, phys_addr, fix_size, 1, |
| U32_PAD(cmd->len)); |
| |
| /* Increment and update queue's write idx */ |
| q->write_ptr = il_queue_inc_wrap(q->write_ptr, q->n_bd); |
| il_txq_update_write_ptr(il, txq); |
| |
| spin_unlock_irqrestore(&il->hcmd_lock, flags); |
| return idx; |
| } |
| |
| /** |
| * il_hcmd_queue_reclaim - Reclaim TX command queue entries already Tx'd |
| * |
| * When FW advances 'R' idx, all entries between old and new 'R' idx |
| * need to be reclaimed. As result, some free space forms. If there is |
| * enough free space (> low mark), wake the stack that feeds us. |
| */ |
| static void |
| il_hcmd_queue_reclaim(struct il_priv *il, int txq_id, int idx, int cmd_idx) |
| { |
| struct il_tx_queue *txq = &il->txq[txq_id]; |
| struct il_queue *q = &txq->q; |
| int nfreed = 0; |
| |
| if (idx >= q->n_bd || il_queue_used(q, idx) == 0) { |
| IL_ERR("Read idx for DMA queue txq id (%d), idx %d, " |
| "is out of range [0-%d] %d %d.\n", txq_id, idx, q->n_bd, |
| q->write_ptr, q->read_ptr); |
| return; |
| } |
| |
| for (idx = il_queue_inc_wrap(idx, q->n_bd); q->read_ptr != idx; |
| q->read_ptr = il_queue_inc_wrap(q->read_ptr, q->n_bd)) { |
| |
| if (nfreed++ > 0) { |
| IL_ERR("HCMD skipped: idx (%d) %d %d\n", idx, |
| q->write_ptr, q->read_ptr); |
| queue_work(il->workqueue, &il->restart); |
| } |
| |
| } |
| } |
| |
| /** |
| * il_tx_cmd_complete - Pull unused buffers off the queue and reclaim them |
| * @rxb: Rx buffer to reclaim |
| * |
| * If an Rx buffer has an async callback associated with it the callback |
| * will be executed. The attached skb (if present) will only be freed |
| * if the callback returns 1 |
| */ |
| void |
| il_tx_cmd_complete(struct il_priv *il, struct il_rx_buf *rxb) |
| { |
| struct il_rx_pkt *pkt = rxb_addr(rxb); |
| u16 sequence = le16_to_cpu(pkt->hdr.sequence); |
| int txq_id = SEQ_TO_QUEUE(sequence); |
| int idx = SEQ_TO_IDX(sequence); |
| int cmd_idx; |
| bool huge = !!(pkt->hdr.sequence & SEQ_HUGE_FRAME); |
| struct il_device_cmd *cmd; |
| struct il_cmd_meta *meta; |
| struct il_tx_queue *txq = &il->txq[il->cmd_queue]; |
| unsigned long flags; |
| |
| /* If a Tx command is being handled and it isn't in the actual |
| * command queue then there a command routing bug has been introduced |
| * in the queue management code. */ |
| if (WARN |
| (txq_id != il->cmd_queue, |
| "wrong command queue %d (should be %d), sequence 0x%X readp=%d writep=%d\n", |
| txq_id, il->cmd_queue, sequence, il->txq[il->cmd_queue].q.read_ptr, |
| il->txq[il->cmd_queue].q.write_ptr)) { |
| il_print_hex_error(il, pkt, 32); |
| return; |
| } |
| |
| cmd_idx = il_get_cmd_idx(&txq->q, idx, huge); |
| cmd = txq->cmd[cmd_idx]; |
| meta = &txq->meta[cmd_idx]; |
| |
| txq->time_stamp = jiffies; |
| |
| pci_unmap_single(il->pci_dev, dma_unmap_addr(meta, mapping), |
| dma_unmap_len(meta, len), PCI_DMA_BIDIRECTIONAL); |
| |
| /* Input error checking is done when commands are added to queue. */ |
| if (meta->flags & CMD_WANT_SKB) { |
| meta->source->reply_page = (unsigned long)rxb_addr(rxb); |
| rxb->page = NULL; |
| } else if (meta->callback) |
| meta->callback(il, cmd, pkt); |
| |
| spin_lock_irqsave(&il->hcmd_lock, flags); |
| |
| il_hcmd_queue_reclaim(il, txq_id, idx, cmd_idx); |
| |
| if (!(meta->flags & CMD_ASYNC)) { |
| clear_bit(S_HCMD_ACTIVE, &il->status); |
| D_INFO("Clearing HCMD_ACTIVE for command %s\n", |
| il_get_cmd_string(cmd->hdr.cmd)); |
| wake_up(&il->wait_command_queue); |
| } |
| |
| /* Mark as unmapped */ |
| meta->flags = 0; |
| |
| spin_unlock_irqrestore(&il->hcmd_lock, flags); |
| } |
| EXPORT_SYMBOL(il_tx_cmd_complete); |
| |
| MODULE_DESCRIPTION("iwl-legacy: common functions for 3945 and 4965"); |
| MODULE_VERSION(IWLWIFI_VERSION); |
| MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR); |
| MODULE_LICENSE("GPL"); |
| |
| /* |
| * set bt_coex_active to true, uCode will do kill/defer |
| * every time the priority line is asserted (BT is sending signals on the |
| * priority line in the PCIx). |
| * set bt_coex_active to false, uCode will ignore the BT activity and |
| * perform the normal operation |
| * |
| * User might experience transmit issue on some platform due to WiFi/BT |
| * co-exist problem. The possible behaviors are: |
| * Able to scan and finding all the available AP |
| * Not able to associate with any AP |
| * On those platforms, WiFi communication can be restored by set |
| * "bt_coex_active" module parameter to "false" |
| * |
| * default: bt_coex_active = true (BT_COEX_ENABLE) |
| */ |
| static bool bt_coex_active = true; |
| module_param(bt_coex_active, bool, S_IRUGO); |
| MODULE_PARM_DESC(bt_coex_active, "enable wifi/bluetooth co-exist"); |
| |
| u32 il_debug_level; |
| EXPORT_SYMBOL(il_debug_level); |
| |
| const u8 il_bcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }; |
| EXPORT_SYMBOL(il_bcast_addr); |
| |
| #define MAX_BIT_RATE_40_MHZ 150 /* Mbps */ |
| #define MAX_BIT_RATE_20_MHZ 72 /* Mbps */ |
| static void |
| il_init_ht_hw_capab(const struct il_priv *il, |
| struct ieee80211_sta_ht_cap *ht_info, |
| enum ieee80211_band band) |
| { |
| u16 max_bit_rate = 0; |
| u8 rx_chains_num = il->hw_params.rx_chains_num; |
| u8 tx_chains_num = il->hw_params.tx_chains_num; |
| |
| ht_info->cap = 0; |
| memset(&ht_info->mcs, 0, sizeof(ht_info->mcs)); |
| |
| ht_info->ht_supported = true; |
| |
| ht_info->cap |= IEEE80211_HT_CAP_SGI_20; |
| max_bit_rate = MAX_BIT_RATE_20_MHZ; |
| if (il->hw_params.ht40_channel & BIT(band)) { |
| ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40; |
| ht_info->cap |= IEEE80211_HT_CAP_SGI_40; |
| ht_info->mcs.rx_mask[4] = 0x01; |
| max_bit_rate = MAX_BIT_RATE_40_MHZ; |
| } |
| |
| if (il->cfg->mod_params->amsdu_size_8K) |
| ht_info->cap |= IEEE80211_HT_CAP_MAX_AMSDU; |
| |
| ht_info->ampdu_factor = CFG_HT_RX_AMPDU_FACTOR_DEF; |
| ht_info->ampdu_density = CFG_HT_MPDU_DENSITY_DEF; |
| |
| ht_info->mcs.rx_mask[0] = 0xFF; |
| if (rx_chains_num >= 2) |
| ht_info->mcs.rx_mask[1] = 0xFF; |
| if (rx_chains_num >= 3) |
| ht_info->mcs.rx_mask[2] = 0xFF; |
| |
| /* Highest supported Rx data rate */ |
| max_bit_rate *= rx_chains_num; |
| WARN_ON(max_bit_rate & ~IEEE80211_HT_MCS_RX_HIGHEST_MASK); |
| ht_info->mcs.rx_highest = cpu_to_le16(max_bit_rate); |
| |
| /* Tx MCS capabilities */ |
| ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED; |
| if (tx_chains_num != rx_chains_num) { |
| ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF; |
| ht_info->mcs.tx_params |= |
| ((tx_chains_num - |
| 1) << IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT); |
| } |
| } |
| |
| /** |
| * il_init_geos - Initialize mac80211's geo/channel info based from eeprom |
| */ |
| int |
| il_init_geos(struct il_priv *il) |
| { |
| struct il_channel_info *ch; |
| struct ieee80211_supported_band *sband; |
| struct ieee80211_channel *channels; |
| struct ieee80211_channel *geo_ch; |
| struct ieee80211_rate *rates; |
| int i = 0; |
| s8 max_tx_power = 0; |
| |
| if (il->bands[IEEE80211_BAND_2GHZ].n_bitrates || |
| il->bands[IEEE80211_BAND_5GHZ].n_bitrates) { |
| D_INFO("Geography modes already initialized.\n"); |
| set_bit(S_GEO_CONFIGURED, &il->status); |
| return 0; |
| } |
| |
| channels = |
| kzalloc(sizeof(struct ieee80211_channel) * il->channel_count, |
| GFP_KERNEL); |
| if (!channels) |
| return -ENOMEM; |
| |
| rates = |
| kzalloc((sizeof(struct ieee80211_rate) * RATE_COUNT_LEGACY), |
| GFP_KERNEL); |
| if (!rates) { |
| kfree(channels); |
| return -ENOMEM; |
| } |
| |
| /* 5.2GHz channels start after the 2.4GHz channels */ |
| sband = &il->bands[IEEE80211_BAND_5GHZ]; |
| sband->channels = &channels[ARRAY_SIZE(il_eeprom_band_1)]; |
| /* just OFDM */ |
| sband->bitrates = &rates[IL_FIRST_OFDM_RATE]; |
| sband->n_bitrates = RATE_COUNT_LEGACY - IL_FIRST_OFDM_RATE; |
| |
| if (il->cfg->sku & IL_SKU_N) |
| il_init_ht_hw_capab(il, &sband->ht_cap, IEEE80211_BAND_5GHZ); |
| |
| sband = &il->bands[IEEE80211_BAND_2GHZ]; |
| sband->channels = channels; |
| /* OFDM & CCK */ |
| sband->bitrates = rates; |
| sband->n_bitrates = RATE_COUNT_LEGACY; |
| |
| if (il->cfg->sku & IL_SKU_N) |
| il_init_ht_hw_capab(il, &sband->ht_cap, IEEE80211_BAND_2GHZ); |
| |
| il->ieee_channels = channels; |
| il->ieee_rates = rates; |
| |
| for (i = 0; i < il->channel_count; i++) { |
| ch = &il->channel_info[i]; |
| |
| if (!il_is_channel_valid(ch)) |
| continue; |
| |
| sband = &il->bands[ch->band]; |
| |
| geo_ch = &sband->channels[sband->n_channels++]; |
| |
| geo_ch->center_freq = |
| ieee80211_channel_to_frequency(ch->channel, ch->band); |
| geo_ch->max_power = ch->max_power_avg; |
| geo_ch->max_antenna_gain = 0xff; |
| geo_ch->hw_value = ch->channel; |
| |
| if (il_is_channel_valid(ch)) { |
| if (!(ch->flags & EEPROM_CHANNEL_IBSS)) |
| geo_ch->flags |= IEEE80211_CHAN_NO_IBSS; |
| |
| if (!(ch->flags & EEPROM_CHANNEL_ACTIVE)) |
| geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN; |
| |
| if (ch->flags & EEPROM_CHANNEL_RADAR) |
| geo_ch->flags |= IEEE80211_CHAN_RADAR; |
| |
| geo_ch->flags |= ch->ht40_extension_channel; |
| |
| if (ch->max_power_avg > max_tx_power) |
| max_tx_power = ch->max_power_avg; |
| } else { |
| geo_ch->flags |= IEEE80211_CHAN_DISABLED; |
| } |
| |
| D_INFO("Channel %d Freq=%d[%sGHz] %s flag=0x%X\n", ch->channel, |
| geo_ch->center_freq, |
| il_is_channel_a_band(ch) ? "5.2" : "2.4", |
| geo_ch-> |
| flags & IEEE80211_CHAN_DISABLED ? "restricted" : "valid", |
| geo_ch->flags); |
| } |
| |
| il->tx_power_device_lmt = max_tx_power; |
| il->tx_power_user_lmt = max_tx_power; |
| il->tx_power_next = max_tx_power; |
| |
| if (il->bands[IEEE80211_BAND_5GHZ].n_channels == 0 && |
| (il->cfg->sku & IL_SKU_A)) { |
| IL_INFO("Incorrectly detected BG card as ABG. " |
| "Please send your PCI ID 0x%04X:0x%04X to maintainer.\n", |
| il->pci_dev->device, il->pci_dev->subsystem_device); |
| il->cfg->sku &= ~IL_SKU_A; |
| } |
| |
| IL_INFO("Tunable channels: %d 802.11bg, %d 802.11a channels\n", |
| il->bands[IEEE80211_BAND_2GHZ].n_channels, |
| il->bands[IEEE80211_BAND_5GHZ].n_channels); |
| |
| set_bit(S_GEO_CONFIGURED, &il->status); |
| |
| return 0; |
| } |
| EXPORT_SYMBOL(il_init_geos); |
| |
| /* |
| * il_free_geos - undo allocations in il_init_geos |
| */ |
| void |
| il_free_geos(struct il_priv *il) |
| { |
| kfree(il->ieee_channels); |
| kfree(il->ieee_rates); |
| clear_bit(S_GEO_CONFIGURED, &il->status); |
| } |
| EXPORT_SYMBOL(il_free_geos); |
| |
| static bool |
| il_is_channel_extension(struct il_priv *il, enum ieee80211_band band, |
| u16 channel, u8 extension_chan_offset) |
| { |
| const struct il_channel_info *ch_info; |
| |
| ch_info = il_get_channel_info(il, band, channel); |
| if (!il_is_channel_valid(ch_info)) |
| return false; |
| |
| if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_ABOVE) |
| return !(ch_info-> |
| ht40_extension_channel & IEEE80211_CHAN_NO_HT40PLUS); |
| else if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_BELOW) |
| return !(ch_info-> |
| ht40_extension_channel & IEEE80211_CHAN_NO_HT40MINUS); |
| |
| return false; |
| } |
| |
| bool |
| il_is_ht40_tx_allowed(struct il_priv *il, struct ieee80211_sta_ht_cap *ht_cap) |
| { |
| if (!il->ht.enabled || !il->ht.is_40mhz) |
| return false; |
| |
| /* |
| * We do not check for IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
| * the bit will not set if it is pure 40MHz case |
| */ |
| if (ht_cap && !ht_cap->ht_supported) |
| return false; |
| |
| #ifdef CONFIG_IWLEGACY_DEBUGFS |
| if (il->disable_ht40) |
| return false; |
| #endif |
| |
| return il_is_channel_extension(il, il->band, |
| le16_to_cpu(il->staging.channel), |
| il->ht.extension_chan_offset); |
| } |
| EXPORT_SYMBOL(il_is_ht40_tx_allowed); |
| |
| static u16 |
| il_adjust_beacon_interval(u16 beacon_val, u16 max_beacon_val) |
| { |
| u16 new_val; |
| u16 beacon_factor; |
| |
| /* |
| * If mac80211 hasn't given us a beacon interval, program |
| * the default into the device. |
| */ |
| if (!beacon_val) |
| return DEFAULT_BEACON_INTERVAL; |
| |
| /* |
| * If the beacon interval we obtained from the peer |
| * is too large, we'll have to wake up more often |
| * (and in IBSS case, we'll beacon too much) |
| * |
| * For example, if max_beacon_val is 4096, and the |
| * requested beacon interval is 7000, we'll have to |
| * use 3500 to be able to wake up on the beacons. |
| * |
| * This could badly influence beacon detection stats. |
| */ |
| |
| beacon_factor = (beacon_val + max_beacon_val) / max_beacon_val; |
| new_val = beacon_val / beacon_factor; |
| |
| if (!new_val) |
| new_val = max_beacon_val; |
| |
| return new_val; |
| } |
| |
| int |
| il_send_rxon_timing(struct il_priv *il) |
| { |
| u64 tsf; |
| s32 interval_tm, rem; |
| struct ieee80211_conf *conf = NULL; |
| u16 beacon_int; |
| struct ieee80211_vif *vif = il->vif; |
| |
| conf = &il->hw->conf; |
| |
| lockdep_assert_held(&il->mutex); |
| |
| memset(&il->timing, 0, sizeof(struct il_rxon_time_cmd)); |
| |
| il->timing.timestamp = cpu_to_le64(il->timestamp); |
| il->timing.listen_interval = cpu_to_le16(conf->listen_interval); |
| |
| beacon_int = vif ? vif->bss_conf.beacon_int : 0; |
| |
| /* |
| * TODO: For IBSS we need to get atim_win from mac80211, |
| * for now just always use 0 |
| */ |
| il->timing.atim_win = 0; |
| |
| beacon_int = |
| il_adjust_beacon_interval(beacon_int, |
| il->hw_params.max_beacon_itrvl * |
| TIME_UNIT); |
| il->timing.beacon_interval = cpu_to_le16(beacon_int); |
| |
| tsf = il->timestamp; /* tsf is modifed by do_div: copy it */ |
| interval_tm = beacon_int * TIME_UNIT; |
| rem = do_div(tsf, interval_tm); |
| il->timing.beacon_init_val = cpu_to_le32(interval_tm - rem); |
| |
| il->timing.dtim_period = vif ? (vif->bss_conf.dtim_period ? : 1) : 1; |
| |
| D_ASSOC("beacon interval %d beacon timer %d beacon tim %d\n", |
| le16_to_cpu(il->timing.beacon_interval), |
| le32_to_cpu(il->timing.beacon_init_val), |
| le16_to_cpu(il->timing.atim_win)); |
| |
| return il_send_cmd_pdu(il, C_RXON_TIMING, sizeof(il->timing), |
| &il->timing); |
| } |
| EXPORT_SYMBOL(il_send_rxon_timing); |
| |
| void |
| il_set_rxon_hwcrypto(struct il_priv *il, int hw_decrypt) |
| { |
| struct il_rxon_cmd *rxon = &il->staging; |
| |
| if (hw_decrypt) |
| rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK; |
| else |
| rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK; |
| |
| } |
| EXPORT_SYMBOL(il_set_rxon_hwcrypto); |
| |
| /* validate RXON structure is valid */ |
| int |
| il_check_rxon_cmd(struct il_priv *il) |
| { |
| struct il_rxon_cmd *rxon = &il->staging; |
| bool error = false; |
| |
| if (rxon->flags & RXON_FLG_BAND_24G_MSK) { |
| if (rxon->flags & RXON_FLG_TGJ_NARROW_BAND_MSK) { |
| IL_WARN("check 2.4G: wrong narrow\n"); |
| error = true; |
| } |
| if (rxon->flags & RXON_FLG_RADAR_DETECT_MSK) { |
| IL_WARN("check 2.4G: wrong radar\n"); |
| error = true; |
| } |
| } else { |
| if (!(rxon->flags & RXON_FLG_SHORT_SLOT_MSK)) { |
| IL_WARN("check 5.2G: not short slot!\n"); |
| error = true; |
| } |
| if (rxon->flags & RXON_FLG_CCK_MSK) { |
| IL_WARN("check 5.2G: CCK!\n"); |
| error = true; |
| } |
| } |
| if ((rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1) { |
| IL_WARN("mac/bssid mcast!\n"); |
| error = true; |
| } |
| |
| /* make sure basic rates 6Mbps and 1Mbps are supported */ |
| if ((rxon->ofdm_basic_rates & RATE_6M_MASK) == 0 && |
| (rxon->cck_basic_rates & RATE_1M_MASK) == 0) { |
| IL_WARN("neither 1 nor 6 are basic\n"); |
| error = true; |
| } |
| |
| if (le16_to_cpu(rxon->assoc_id) > 2007) { |
| IL_WARN("aid > 2007\n"); |
| error = true; |
| } |
| |
| if ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK)) == |
| (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK)) { |
| IL_WARN("CCK and short slot\n"); |
| error = true; |
| } |
| |
| if ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK)) == |
| (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK)) { |
| IL_WARN("CCK and auto detect"); |
| error = true; |
| } |
| |
| if ((rxon-> |
| flags & (RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK)) == |
| RXON_FLG_TGG_PROTECT_MSK) { |
| IL_WARN("TGg but no auto-detect\n"); |
| error = true; |
| } |
| |
| if (error) |
| IL_WARN("Tuning to channel %d\n", le16_to_cpu(rxon->channel)); |
| |
| if (error) { |
| IL_ERR("Invalid RXON\n"); |
| return -EINVAL; |
| } |
| return 0; |
| } |
| EXPORT_SYMBOL(il_check_rxon_cmd); |
| |
| /** |
| * il_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed |
| * @il: staging_rxon is compared to active_rxon |
| * |
| * If the RXON structure is changing enough to require a new tune, |
| * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that |
| * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required. |
| */ |
| int |
| il_full_rxon_required(struct il_priv *il) |
| { |
| const struct il_rxon_cmd *staging = &il->staging; |
| const struct il_rxon_cmd *active = &il->active; |
| |
| #define CHK(cond) \ |
| if ((cond)) { \ |
| D_INFO("need full RXON - " #cond "\n"); \ |
| return 1; \ |
| } |
| |
| #define CHK_NEQ(c1, c2) \ |
| if ((c1) != (c2)) { \ |
| D_INFO("need full RXON - " \ |
| #c1 " != " #c2 " - %d != %d\n", \ |
| (c1), (c2)); \ |
| return 1; \ |
| } |
| |
| /* These items are only settable from the full RXON command */ |
| CHK(!il_is_associated(il)); |
| CHK(!ether_addr_equal(staging->bssid_addr, active->bssid_addr)); |
| CHK(!ether_addr_equal(staging->node_addr, active->node_addr)); |
| CHK(!ether_addr_equal(staging->wlap_bssid_addr, |
| active->wlap_bssid_addr)); |
| CHK_NEQ(staging->dev_type, active->dev_type); |
| CHK_NEQ(staging->channel, active->channel); |
| CHK_NEQ(staging->air_propagation, active->air_propagation); |
| CHK_NEQ(staging->ofdm_ht_single_stream_basic_rates, |
| active->ofdm_ht_single_stream_basic_rates); |
| CHK_NEQ(staging->ofdm_ht_dual_stream_basic_rates, |
| active->ofdm_ht_dual_stream_basic_rates); |
| CHK_NEQ(staging->assoc_id, active->assoc_id); |
| |
| /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can |
| * be updated with the RXON_ASSOC command -- however only some |
| * flag transitions are allowed using RXON_ASSOC */ |
| |
| /* Check if we are not switching bands */ |
| CHK_NEQ(staging->flags & RXON_FLG_BAND_24G_MSK, |
| active->flags & RXON_FLG_BAND_24G_MSK); |
| |
| /* Check if we are switching association toggle */ |
| CHK_NEQ(staging->filter_flags & RXON_FILTER_ASSOC_MSK, |
| active->filter_flags & RXON_FILTER_ASSOC_MSK); |
| |
| #undef CHK |
| #undef CHK_NEQ |
| |
| return 0; |
| } |
| EXPORT_SYMBOL(il_full_rxon_required); |
| |
| u8 |
| il_get_lowest_plcp(struct il_priv *il) |
| { |
| /* |
| * Assign the lowest rate -- should really get this from |
| * the beacon skb from mac80211. |
| */ |
| if (il->staging.flags & RXON_FLG_BAND_24G_MSK) |
| return RATE_1M_PLCP; |
| else |
| return RATE_6M_PLCP; |
| } |
| EXPORT_SYMBOL(il_get_lowest_plcp); |
| |
| static void |
| _il_set_rxon_ht(struct il_priv *il, struct il_ht_config *ht_conf) |
| { |
| struct il_rxon_cmd *rxon = &il->staging; |
| |
| if (!il->ht.enabled) { |
| rxon->flags &= |
| ~(RXON_FLG_CHANNEL_MODE_MSK | |
| RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK | RXON_FLG_HT40_PROT_MSK |
| | RXON_FLG_HT_PROT_MSK); |
| return; |
| } |
| |
| rxon->flags |= |
| cpu_to_le32(il->ht.protection << RXON_FLG_HT_OPERATING_MODE_POS); |
| |
| /* Set up channel bandwidth: |
| * 20 MHz only, 20/40 mixed or pure 40 if ht40 ok */ |
| /* clear the HT channel mode before set the mode */ |
| rxon->flags &= |
| ~(RXON_FLG_CHANNEL_MODE_MSK | RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK); |
| if (il_is_ht40_tx_allowed(il, NULL)) { |
| /* pure ht40 */ |
| if (il->ht.protection == IEEE80211_HT_OP_MODE_PROTECTION_20MHZ) { |
| rxon->flags |= RXON_FLG_CHANNEL_MODE_PURE_40; |
| /* Note: control channel is opposite of extension channel */ |
| switch (il->ht.extension_chan_offset) { |
| case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: |
| rxon->flags &= |
| ~RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK; |
| break; |
| case IEEE80211_HT_PARAM_CHA_SEC_BELOW: |
| rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK; |
| break; |
| } |
| } else { |
| /* Note: control channel is opposite of extension channel */ |
| switch (il->ht.extension_chan_offset) { |
| case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: |
| rxon->flags &= |
| ~(RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK); |
| rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED; |
| break; |
| case IEEE80211_HT_PARAM_CHA_SEC_BELOW: |
| rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK; |
| rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED; |
| break; |
| case IEEE80211_HT_PARAM_CHA_SEC_NONE: |
| default: |
| /* channel location only valid if in Mixed mode */ |
| IL_ERR("invalid extension channel offset\n"); |
| break; |
| } |
| } |
| } else { |
| rxon->flags |= RXON_FLG_CHANNEL_MODE_LEGACY; |
| } |
| |
| if (il->ops->set_rxon_chain) |
| il->ops->set_rxon_chain(il); |
| |
| D_ASSOC("rxon flags 0x%X operation mode :0x%X " |
| "extension channel offset 0x%x\n", le32_to_cpu(rxon->flags), |
| il->ht.protection, il->ht.extension_chan_offset); |
| } |
| |
| void |
| il_set_rxon_ht(struct il_priv *il, struct il_ht_config *ht_conf) |
| { |
| _il_set_rxon_ht(il, ht_conf); |
| } |
| EXPORT_SYMBOL(il_set_rxon_ht); |
| |
| /* Return valid, unused, channel for a passive scan to reset the RF */ |
| u8 |
| il_get_single_channel_number(struct il_priv *il, enum ieee80211_band band) |
| { |
| const struct il_channel_info *ch_info; |
| int i; |
| u8 channel = 0; |
| u8 min, max; |
| |
| if (band == IEEE80211_BAND_5GHZ) { |
| min = 14; |
| max = il->channel_count; |
| } else { |
| min = 0; |
| max = 14; |
| } |
| |
| for (i = min; i < max; i++) { |
| channel = il->channel_info[i].channel; |
| if (channel == le16_to_cpu(il->staging.channel)) |
| continue; |
| |
| ch_info = il_get_channel_info(il, band, channel); |
| if (il_is_channel_valid(ch_info)) |
| break; |
| } |
| |
| return channel; |
| } |
| EXPORT_SYMBOL(il_get_single_channel_number); |
| |
| /** |
| * il_set_rxon_channel - Set the band and channel values in staging RXON |
| * @ch: requested channel as a pointer to struct ieee80211_channel |
| |
| * NOTE: Does not commit to the hardware; it sets appropriate bit fields |
| * in the staging RXON flag structure based on the ch->band |
| */ |
| int |
| il_set_rxon_channel(struct il_priv *il, struct ieee80211_channel *ch) |
| { |
| enum ieee80211_band band = ch->band; |
| u16 channel = ch->hw_value; |
| |
| if (le16_to_cpu(il->staging.channel) == channel && il->band == band) |
| return 0; |
| |
| il->staging.channel = cpu_to_le16(channel); |
| if (band == IEEE80211_BAND_5GHZ) |
| il->staging.flags &= ~RXON_FLG_BAND_24G_MSK; |
| else |
| il->staging.flags |= RXON_FLG_BAND_24G_MSK; |
| |
| il->band = band; |
| |
| D_INFO("Staging channel set to %d [%d]\n", channel, band); |
| |
| return 0; |
| } |
| EXPORT_SYMBOL(il_set_rxon_channel); |
| |
| void |
| il_set_flags_for_band(struct il_priv *il, enum ieee80211_band band, |
| struct ieee80211_vif *vif) |
| { |
| if (band == IEEE80211_BAND_5GHZ) { |
| il->staging.flags &= |
| ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK | |
| RXON_FLG_CCK_MSK); |
| il->staging.flags |= RXON_FLG_SHORT_SLOT_MSK; |
| } else { |
| /* Copied from il_post_associate() */ |
| if (vif && vif->bss_conf.use_short_slot) |
| il->staging.flags |= RXON_FLG_SHORT_SLOT_MSK; |
| else |
| il->staging.flags &= ~RXON_FLG_SHORT_SLOT_MSK; |
| |
| il->staging.flags |= RXON_FLG_BAND_24G_MSK; |
| il->staging.flags |= RXON_FLG_AUTO_DETECT_MSK; |
| il->staging.flags &= ~RXON_FLG_CCK_MSK; |
| } |
| } |
| EXPORT_SYMBOL(il_set_flags_for_band); |
| |
| /* |
| * initialize rxon structure with default values from eeprom |
| */ |
| void |
| il_connection_init_rx_config(struct il_priv *il) |
| { |
| const struct il_channel_info *ch_info; |
| |
| memset(&il->staging, 0, sizeof(il->staging)); |
| |
| if (!il->vif) { |
| il->staging.dev_type = RXON_DEV_TYPE_ESS; |
| } else if (il->vif->type == NL80211_IFTYPE_STATION) { |
| il->staging.dev_type = RXON_DEV_TYPE_ESS; |
| il->staging.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK; |
| } else if (il->vif->type == NL80211_IFTYPE_ADHOC) { |
| il->staging.dev_type = RXON_DEV_TYPE_IBSS; |
| il->staging.flags = RXON_FLG_SHORT_PREAMBLE_MSK; |
| il->staging.filter_flags = |
| RXON_FILTER_BCON_AWARE_MSK | RXON_FILTER_ACCEPT_GRP_MSK; |
| } else { |
| IL_ERR("Unsupported interface type %d\n", il->vif->type); |
| return; |
| } |
| |
| #if 0 |
| /* TODO: Figure out when short_preamble would be set and cache from |
| * that */ |
| if (!hw_to_local(il->hw)->short_preamble) |
| il->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK; |
| else |
| il->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK; |
| #endif |
| |
| ch_info = |
| il_get_channel_info(il, il->band, le16_to_cpu(il->active.channel)); |
| |
| if (!ch_info) |
| ch_info = &il->channel_info[0]; |
| |
| il->staging.channel = cpu_to_le16(ch_info->channel); |
| il->band = ch_info->band; |
| |
| il_set_flags_for_band(il, il->band, il->vif); |
| |
| il->staging.ofdm_basic_rates = |
| (IL_OFDM_RATES_MASK >> IL_FIRST_OFDM_RATE) & 0xFF; |
| il->staging.cck_basic_rates = |
| (IL_CCK_RATES_MASK >> IL_FIRST_CCK_RATE) & 0xF; |
| |
| /* clear both MIX and PURE40 mode flag */ |
| il->staging.flags &= |
| ~(RXON_FLG_CHANNEL_MODE_MIXED | RXON_FLG_CHANNEL_MODE_PURE_40); |
| if (il->vif) |
| memcpy(il->staging.node_addr, il->vif->addr, ETH_ALEN); |
| |
| il->staging.ofdm_ht_single_stream_basic_rates = 0xff; |
| il->staging.ofdm_ht_dual_stream_basic_rates = 0xff; |
| } |
| EXPORT_SYMBOL(il_connection_init_rx_config); |
| |
| void |
| il_set_rate(struct il_priv *il) |
| { |
| const struct ieee80211_supported_band *hw = NULL; |
| struct ieee80211_rate *rate; |
| int i; |
| |
| hw = il_get_hw_mode(il, il->band); |
| if (!hw) { |
| IL_ERR("Failed to set rate: unable to get hw mode\n"); |
| return; |
| } |
| |
| il->active_rate = 0; |
| |
| for (i = 0; i < hw->n_bitrates; i++) { |
| rate = &(hw->bitrates[i]); |
| if (rate->hw_value < RATE_COUNT_LEGACY) |
| il->active_rate |= (1 << rate->hw_value); |
| } |
| |
| D_RATE("Set active_rate = %0x\n", il->active_rate); |
| |
| il->staging.cck_basic_rates = |
| (IL_CCK_BASIC_RATES_MASK >> IL_FIRST_CCK_RATE) & 0xF; |
| |
| il->staging.ofdm_basic_rates = |
| (IL_OFDM_BASIC_RATES_MASK >> IL_FIRST_OFDM_RATE) & 0xFF; |
| } |
| EXPORT_SYMBOL(il_set_rate); |
| |
| void |
| il_chswitch_done(struct il_priv *il, bool is_success) |
| { |
| if (test_bit(S_EXIT_PENDING, &il->status)) |
| return; |
| |
| if (test_and_clear_bit(S_CHANNEL_SWITCH_PENDING, &il->status)) |
| ieee80211_chswitch_done(il->vif, is_success); |
| } |
| EXPORT_SYMBOL(il_chswitch_done); |
| |
| void |
| il_hdl_csa(struct il_priv *il, struct il_rx_buf *rxb) |
| { |
| struct il_rx_pkt *pkt = rxb_addr(rxb); |
| struct il_csa_notification *csa = &(pkt->u.csa_notif); |
| struct il_rxon_cmd *rxon = (void *)&il->active; |
| |
| if (!test_bit(S_CHANNEL_SWITCH_PENDING, &il->status)) |
| return; |
| |
| if (!le32_to_cpu(csa->status) && csa->channel == il->switch_channel) { |
| rxon->channel = csa->channel; |
| il->staging.channel = csa->channel; |
| D_11H("CSA notif: channel %d\n", le16_to_cpu(csa->channel)); |
| il_chswitch_done(il, true); |
| } else { |
| IL_ERR("CSA notif (fail) : channel %d\n", |
| le16_to_cpu(csa->channel)); |
| il_chswitch_done(il, false); |
| } |
| } |
| EXPORT_SYMBOL(il_hdl_csa); |
| |
| #ifdef CONFIG_IWLEGACY_DEBUG |
| void |
| il_print_rx_config_cmd(struct il_priv *il) |
| { |
| struct il_rxon_cmd *rxon = &il->staging; |
| |
| D_RADIO("RX CONFIG:\n"); |
| il_print_hex_dump(il, IL_DL_RADIO, (u8 *) rxon, sizeof(*rxon)); |
| D_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel)); |
| D_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags)); |
| D_RADIO("u32 filter_flags: 0x%08x\n", le32_to_cpu(rxon->filter_flags)); |
| D_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type); |
| D_RADIO("u8 ofdm_basic_rates: 0x%02x\n", rxon->ofdm_basic_rates); |
| D_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates); |
| D_RADIO("u8[6] node_addr: %pM\n", rxon->node_addr); |
| D_RADIO("u8[6] bssid_addr: %pM\n", rxon->bssid_addr); |
| D_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id)); |
| } |
| EXPORT_SYMBOL(il_print_rx_config_cmd); |
| #endif |
| /** |
| * il_irq_handle_error - called for HW or SW error interrupt from card |
| */ |
| void |
| il_irq_handle_error(struct il_priv *il) |
| { |
| /* Set the FW error flag -- cleared on il_down */ |
| set_bit(S_FW_ERROR, &il->status); |
| |
| /* Cancel currently queued command. */ |
| clear_bit(S_HCMD_ACTIVE, &il->status); |
| |
| IL_ERR("Loaded firmware version: %s\n", il->hw->wiphy->fw_version); |
| |
| il->ops->dump_nic_error_log(il); |
| if (il->ops->dump_fh) |
| il->ops->dump_fh(il, NULL, false); |
| #ifdef CONFIG_IWLEGACY_DEBUG |
| if (il_get_debug_level(il) & IL_DL_FW_ERRORS) |
| il_print_rx_config_cmd(il); |
| #endif |
| |
| wake_up(&il->wait_command_queue); |
| |
| /* Keep the restart process from trying to send host |
| * commands by clearing the INIT status bit */ |
| clear_bit(S_READY, &il->status); |
| |
| if (!test_bit(S_EXIT_PENDING, &il->status)) { |
| IL_DBG(IL_DL_FW_ERRORS, |
| "Restarting adapter due to uCode error.\n"); |
| |
| if (il->cfg->mod_params->restart_fw) |
| queue_work(il->workqueue, &il->restart); |
| } |
| } |
| EXPORT_SYMBOL(il_irq_handle_error); |
| |
| static int |
| _il_apm_stop_master(struct il_priv *il) |
| { |
| int ret = 0; |
| |
| /* stop device's busmaster DMA activity */ |
| _il_set_bit(il, CSR_RESET, CSR_RESET_REG_FLAG_STOP_MASTER); |
| |
| ret = |
| _il_poll_bit(il, CSR_RESET, CSR_RESET_REG_FLAG_MASTER_DISABLED, |
| CSR_RESET_REG_FLAG_MASTER_DISABLED, 100); |
| if (ret < 0) |
| IL_WARN("Master Disable Timed Out, 100 usec\n"); |
| |
| D_INFO("stop master\n"); |
| |
| return ret; |
| } |
| |
| void |
| _il_apm_stop(struct il_priv *il) |
| { |
| lockdep_assert_held(&il->reg_lock); |
| |
| D_INFO("Stop card, put in low power state\n"); |
| |
| /* Stop device's DMA activity */ |
| _il_apm_stop_master(il); |
| |
| /* Reset the entire device */ |
| _il_set_bit(il, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET); |
| |
| udelay(10); |
| |
| /* |
| * Clear "initialization complete" bit to move adapter from |
| * D0A* (powered-up Active) --> D0U* (Uninitialized) state. |
| */ |
| _il_clear_bit(il, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE); |
| } |
| EXPORT_SYMBOL(_il_apm_stop); |
| |
| void |
| il_apm_stop(struct il_priv *il) |
| { |
| unsigned long flags; |
| |
| spin_lock_irqsave(&il->reg_lock, flags); |
| _il_apm_stop(il); |
| spin_unlock_irqrestore(&il->reg_lock, flags); |
| } |
| EXPORT_SYMBOL(il_apm_stop); |
| |
| /* |
| * Start up NIC's basic functionality after it has been reset |
| * (e.g. after platform boot, or shutdown via il_apm_stop()) |
| * NOTE: This does not load uCode nor start the embedded processor |
| */ |
| int |
| il_apm_init(struct il_priv *il) |
| { |
| int ret = 0; |
| u16 lctl; |
| |
| D_INFO("Init card's basic functions\n"); |
| |
| /* |
| * Use "set_bit" below rather than "write", to preserve any hardware |
| * bits already set by default after reset. |
| */ |
| |
| /* Disable L0S exit timer (platform NMI Work/Around) */ |
| il_set_bit(il, CSR_GIO_CHICKEN_BITS, |
| CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER); |
| |
| /* |
| * Disable L0s without affecting L1; |
| * don't wait for ICH L0s (ICH bug W/A) |
| */ |
| il_set_bit(il, CSR_GIO_CHICKEN_BITS, |
| CSR_GIO_CHICKEN_BITS_REG_BIT_L1A_NO_L0S_RX); |
| |
| /* Set FH wait threshold to maximum (HW error during stress W/A) */ |
| il_set_bit(il, CSR_DBG_HPET_MEM_REG, CSR_DBG_HPET_MEM_REG_VAL); |
| |
| /* |
| * Enable HAP INTA (interrupt from management bus) to |
| * wake device's PCI Express link L1a -> L0s |
| * NOTE: This is no-op for 3945 (non-existent bit) |
| */ |
| il_set_bit(il, CSR_HW_IF_CONFIG_REG, |
| CSR_HW_IF_CONFIG_REG_BIT_HAP_WAKE_L1A); |
| |
| /* |
| * HW bug W/A for instability in PCIe bus L0->L0S->L1 transition. |
| * Check if BIOS (or OS) enabled L1-ASPM on this device. |
| * If so (likely), disable L0S, so device moves directly L0->L1; |
| * costs negligible amount of power savings. |
| * If not (unlikely), enable L0S, so there is at least some |
| * power savings, even without L1. |
| */ |
| if (il->cfg->set_l0s) { |
| lctl = il_pcie_link_ctl(il); |
| if ((lctl & PCI_CFG_LINK_CTRL_VAL_L1_EN) == |
| PCI_CFG_LINK_CTRL_VAL_L1_EN) { |
| /* L1-ASPM enabled; disable(!) L0S */ |
| il_set_bit(il, CSR_GIO_REG, |
| CSR_GIO_REG_VAL_L0S_ENABLED); |
| D_POWER("L1 Enabled; Disabling L0S\n"); |
| } else { |
| /* L1-ASPM disabled; enable(!) L0S */ |
| il_clear_bit(il, CSR_GIO_REG, |
| CSR_GIO_REG_VAL_L0S_ENABLED); |
| D_POWER("L1 Disabled; Enabling L0S\n"); |
| } |
| } |
| |
| /* Configure analog phase-lock-loop before activating to D0A */ |
| if (il->cfg->pll_cfg_val) |
| il_set_bit(il, CSR_ANA_PLL_CFG, |
| il->cfg->pll_cfg_val); |
| |
| /* |
| * Set "initialization complete" bit to move adapter from |
| * D0U* --> D0A* (powered-up active) state. |
| */ |
| il_set_bit(il, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE); |
| |
| /* |
| * Wait for clock stabilization; once stabilized, access to |
| * device-internal resources is supported, e.g. il_wr_prph() |
| * and accesses to uCode SRAM. |
| */ |
| ret = |
| _il_poll_bit(il, CSR_GP_CNTRL, |
| CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, |
| CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000); |
| if (ret < 0) { |
| D_INFO("Failed to init the card\n"); |
| goto out; |
| } |
| |
| /* |
| * Enable DMA and BSM (if used) clocks, wait for them to stabilize. |
| * BSM (Boostrap State Machine) is only in 3945 and 4965. |
| * |
| * Write to "CLK_EN_REG"; "1" bits enable clocks, while "0" bits |
| * do not disable clocks. This preserves any hardware bits already |
| * set by default in "CLK_CTRL_REG" after reset. |
| */ |
| if (il->cfg->use_bsm) |
| il_wr_prph(il, APMG_CLK_EN_REG, |
| APMG_CLK_VAL_DMA_CLK_RQT | APMG_CLK_VAL_BSM_CLK_RQT); |
| else |
| il_wr_prph(il, APMG_CLK_EN_REG, APMG_CLK_VAL_DMA_CLK_RQT); |
| udelay(20); |
| |
| /* Disable L1-Active */ |
| il_set_bits_prph(il, APMG_PCIDEV_STT_REG, |
| APMG_PCIDEV_STT_VAL_L1_ACT_DIS); |
| |
| out: |
| return ret; |
| } |
| EXPORT_SYMBOL(il_apm_init); |
| |
| int |
| il_set_tx_power(struct il_priv *il, s8 tx_power, bool force) |
| { |
| int ret; |
| s8 prev_tx_power; |
| bool defer; |
| |
| lockdep_assert_held(&il->mutex); |
| |
| if (il->tx_power_user_lmt == tx_power && !force) |
| return 0; |
| |
| if (!il->ops->send_tx_power) |
| return -EOPNOTSUPP; |
| |
| /* 0 dBm mean 1 milliwatt */ |
| if (tx_power < 0) { |
| IL_WARN("Requested user TXPOWER %d below 1 mW.\n", tx_power); |
| return -EINVAL; |
| } |
| |
| if (tx_power > il->tx_power_device_lmt) { |
| IL_WARN("Requested user TXPOWER %d above upper limit %d.\n", |
| tx_power, il->tx_power_device_lmt); |
| return -EINVAL; |
| } |
| |
| if (!il_is_ready_rf(il)) |
| return -EIO; |
| |
| /* scan complete and commit_rxon use tx_power_next value, |
| * it always need to be updated for newest request */ |
| il->tx_power_next = tx_power; |
| |
| /* do not set tx power when scanning or channel changing */ |
| defer = test_bit(S_SCANNING, &il->status) || |
| memcmp(&il->active, &il->staging, sizeof(il->staging)); |
| if (defer && !force) { |
| D_INFO("Deferring tx power set\n"); |
| return 0; |
| } |
| |
| prev_tx_power = il->tx_power_user_lmt; |
| il->tx_power_user_lmt = tx_power; |
| |
| ret = il->ops->send_tx_power(il); |
| |
| /* if fail to set tx_power, restore the orig. tx power */ |
| if (ret) { |
| il->tx_power_user_lmt = prev_tx_power; |
| il->tx_power_next = prev_tx_power; |
| } |
| return ret; |
| } |
| EXPORT_SYMBOL(il_set_tx_power); |
| |
| void |
| il_send_bt_config(struct il_priv *il) |
| { |
| struct il_bt_cmd bt_cmd = { |
| .lead_time = BT_LEAD_TIME_DEF, |
| .max_kill = BT_MAX_KILL_DEF, |
| .kill_ack_mask = 0, |
| .kill_cts_mask = 0, |
| }; |
| |
| if (!bt_coex_active) |
| bt_cmd.flags = BT_COEX_DISABLE; |
| else |
| bt_cmd.flags = BT_COEX_ENABLE; |
| |
| D_INFO("BT coex %s\n", |
| (bt_cmd.flags == BT_COEX_DISABLE) ? "disable" : "active"); |
| |
| if (il_send_cmd_pdu(il, C_BT_CONFIG, sizeof(struct il_bt_cmd), &bt_cmd)) |
| IL_ERR("failed to send BT Coex Config\n"); |
| } |
| EXPORT_SYMBOL(il_send_bt_config); |
| |
| int |
| il_send_stats_request(struct il_priv *il, u8 flags, bool clear) |
| { |
| struct il_stats_cmd stats_cmd = { |
| .configuration_flags = clear ? IL_STATS_CONF_CLEAR_STATS : 0, |
| }; |
| |
| if (flags & CMD_ASYNC) |
| return il_send_cmd_pdu_async(il, C_STATS, sizeof(struct il_stats_cmd), |
| &stats_cmd, NULL); |
| else |
| return il_send_cmd_pdu(il, C_STATS, sizeof(struct il_stats_cmd), |
| &stats_cmd); |
| } |
| EXPORT_SYMBOL(il_send_stats_request); |
| |
| void |
| il_hdl_pm_sleep(struct il_priv *il, struct il_rx_buf *rxb) |
| { |
| #ifdef CONFIG_IWLEGACY_DEBUG |
| struct il_rx_pkt *pkt = rxb_addr(rxb); |
| struct il_sleep_notification *sleep = &(pkt->u.sleep_notif); |
| D_RX("sleep mode: %d, src: %d\n", |
| sleep->pm_sleep_mode, sleep->pm_wakeup_src); |
| #endif |
| } |
| EXPORT_SYMBOL(il_hdl_pm_sleep); |
| |
| void |
| il_hdl_pm_debug_stats(struct il_priv *il, struct il_rx_buf *rxb) |
| { |
| struct il_rx_pkt *pkt = rxb_addr(rxb); |
| u32 len = le32_to_cpu(pkt->len_n_flags) & IL_RX_FRAME_SIZE_MSK; |
| D_RADIO("Dumping %d bytes of unhandled notification for %s:\n", len, |
| il_get_cmd_string(pkt->hdr.cmd)); |
| il_print_hex_dump(il, IL_DL_RADIO, pkt->u.raw, len); |
| } |
| EXPORT_SYMBOL(il_hdl_pm_debug_stats); |
| |
| void |
| il_hdl_error(struct il_priv *il, struct il_rx_buf *rxb) |
| { |
| struct il_rx_pkt *pkt = rxb_addr(rxb); |
| |
| IL_ERR("Error Reply type 0x%08X cmd %s (0x%02X) " |
| "seq 0x%04X ser 0x%08X\n", |
| le32_to_cpu(pkt->u.err_resp.error_type), |
| il_get_cmd_string(pkt->u.err_resp.cmd_id), |
| pkt->u.err_resp.cmd_id, |
| le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num), |
| le32_to_cpu(pkt->u.err_resp.error_info)); |
| } |
| EXPORT_SYMBOL(il_hdl_error); |
| |
| void |
| il_clear_isr_stats(struct il_priv *il) |
| { |
| memset(&il->isr_stats, 0, sizeof(il->isr_stats)); |
| } |
| |
| int |
| il_mac_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u16 queue, |
| const struct ieee80211_tx_queue_params *params) |
| { |
| struct il_priv *il = hw->priv; |
| unsigned long flags; |
| int q; |
| |
| D_MAC80211("enter\n"); |
| |
| if (!il_is_ready_rf(il)) { |
| D_MAC80211("leave - RF not ready\n"); |
| return -EIO; |
| } |
| |
| if (queue >= AC_NUM) { |
| D_MAC80211("leave - queue >= AC_NUM %d\n", queue); |
| return 0; |
| } |
| |
| q = AC_NUM - 1 - queue; |
| |
| spin_lock_irqsave(&il->lock, flags); |
| |
| il->qos_data.def_qos_parm.ac[q].cw_min = |
| cpu_to_le16(params->cw_min); |
| il->qos_data.def_qos_parm.ac[q].cw_max = |
| cpu_to_le16(params->cw_max); |
| il->qos_data.def_qos_parm.ac[q].aifsn = params->aifs; |
| il->qos_data.def_qos_parm.ac[q].edca_txop = |
| cpu_to_le16((params->txop * 32)); |
| |
| il->qos_data.def_qos_parm.ac[q].reserved1 = 0; |
| |
| spin_unlock_irqrestore(&il->lock, flags); |
| |
| D_MAC80211("leave\n"); |
| return 0; |
| } |
| EXPORT_SYMBOL(il_mac_conf_tx); |
| |
| int |
| il_mac_tx_last_beacon(struct ieee80211_hw *hw) |
| { |
| struct il_priv *il = hw->priv; |
| int ret; |
| |
| D_MAC80211("enter\n"); |
| |
| ret = (il->ibss_manager == IL_IBSS_MANAGER); |
| |
| D_MAC80211("leave ret %d\n", ret); |
| return ret; |
| } |
| EXPORT_SYMBOL_GPL(il_mac_tx_last_beacon); |
| |
| static int |
| il_set_mode(struct il_priv *il) |
| { |
| il_connection_init_rx_config(il); |
| |
| if (il->ops->set_rxon_chain) |
| il->ops->set_rxon_chain(il); |
| |
| return il_commit_rxon(il); |
| } |
| |
| int |
| il_mac_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif) |
| { |
| struct il_priv *il = hw->priv; |
| int err; |
| bool reset; |
| |
| mutex_lock(&il->mutex); |
| D_MAC80211("enter: type %d, addr %pM\n", vif->type, vif->addr); |
| |
| if (!il_is_ready_rf(il)) { |
| IL_WARN("Try to add interface when device not ready\n"); |
| err = -EINVAL; |
| goto out; |
| } |
| |
| /* |
| * We do not support multiple virtual interfaces, but on hardware reset |
| * we have to add the same interface again. |
| */ |
| reset = (il->vif == vif); |
| if (il->vif && !reset) { |
| err = -EOPNOTSUPP; |
| goto out; |
| } |
| |
| il->vif = vif; |
| il->iw_mode = vif->type; |
| |
| err = il_set_mode(il); |
| if (err) { |
| IL_WARN("Fail to set mode %d\n", vif->type); |
| if (!reset) { |
| il->vif = NULL; |
| il->iw_mode = NL80211_IFTYPE_STATION; |
| } |
| } |
| |
| out: |
| D_MAC80211("leave err %d\n", err); |
| mutex_unlock(&il->mutex); |
| |
| return err; |
| } |
| EXPORT_SYMBOL(il_mac_add_interface); |
| |
| static void |
| il_teardown_interface(struct il_priv *il, struct ieee80211_vif *vif, |
| bool mode_change) |
| { |
| lockdep_assert_held(&il->mutex); |
| |
| if (il->scan_vif == vif) { |
| il_scan_cancel_timeout(il, 200); |
| il_force_scan_end(il); |
| } |
| |
| if (!mode_change) |
| il_set_mode(il); |
| |
| } |
| |
| void |
| il_mac_remove_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif) |
| { |
| struct il_priv *il = hw->priv; |
| |
| mutex_lock(&il->mutex); |
| D_MAC80211("enter: type %d, addr %pM\n", vif->type, vif->addr); |
| |
| WARN_ON(il->vif != vif); |
| il->vif = NULL; |
| |
| il_teardown_interface(il, vif, false); |
| memset(il->bssid, 0, ETH_ALEN); |
| |
| D_MAC80211("leave\n"); |
| mutex_unlock(&il->mutex); |
| } |
| EXPORT_SYMBOL(il_mac_remove_interface); |
| |
| int |
| il_alloc_txq_mem(struct il_priv *il) |
| { |
| if (!il->txq) |
| il->txq = |
| kzalloc(sizeof(struct il_tx_queue) * |
| il->cfg->num_of_queues, GFP_KERNEL); |
| if (!il->txq) { |
| IL_ERR("Not enough memory for txq\n"); |
| return -ENOMEM; |
| } |
| return 0; |
| } |
| EXPORT_SYMBOL(il_alloc_txq_mem); |
| |
| void |
| il_free_txq_mem(struct il_priv *il) |
| { |
| kfree(il->txq); |
| il->txq = NULL; |
| } |
| EXPORT_SYMBOL(il_free_txq_mem); |
| |
| int |
| il_force_reset(struct il_priv *il, bool external) |
| { |
| struct il_force_reset *force_reset; |
| |
| if (test_bit(S_EXIT_PENDING, &il->status)) |
| return -EINVAL; |
| |
| force_reset = &il->force_reset; |
| force_reset->reset_request_count++; |
| if (!external) { |
| if (force_reset->last_force_reset_jiffies && |
| time_after(force_reset->last_force_reset_jiffies + |
| force_reset->reset_duration, jiffies)) { |
| D_INFO("force reset rejected\n"); |
| force_reset->reset_reject_count++; |
| return -EAGAIN; |
| } |
| } |
| force_reset->reset_success_count++; |
| force_reset->last_force_reset_jiffies = jiffies; |
| |
| /* |
| * if the request is from external(ex: debugfs), |
| * then always perform the request in regardless the module |
| * parameter setting |
| * if the request is from internal (uCode error or driver |
| * detect failure), then fw_restart module parameter |
| * need to be check before performing firmware reload |
| */ |
| |
| if (!external && !il->cfg->mod_params->restart_fw) { |
| D_INFO("Cancel firmware reload based on " |
| "module parameter setting\n"); |
| return 0; |
| } |
| |
| IL_ERR("On demand firmware reload\n"); |
| |
| /* Set the FW error flag -- cleared on il_down */ |
| set_bit(S_FW_ERROR, &il->status); |
| wake_up(&il->wait_command_queue); |
| /* |
| * Keep the restart process from trying to send host |
| * commands by clearing the INIT status bit |
| */ |
| clear_bit(S_READY, &il->status); |
| queue_work(il->workqueue, &il->restart); |
| |
| return 0; |
| } |
| |
| int |
| il_mac_change_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif, |
| enum nl80211_iftype newtype, bool newp2p) |
| { |
| struct il_priv *il = hw->priv; |
| int err; |
| |
| mutex_lock(&il->mutex); |
| D_MAC80211("enter: type %d, addr %pM newtype %d newp2p %d\n", |
| vif->type, vif->addr, newtype, newp2p); |
| |
| if (newp2p) { |
| err = -EOPNOTSUPP; |
| goto out; |
| } |
| |
| if (!il->vif || !il_is_ready_rf(il)) { |
| /* |
| * Huh? But wait ... this can maybe happen when |
| * we're in the middle of a firmware restart! |
| */ |
| err = -EBUSY; |
| goto out; |
| } |
| |
| /* success */ |
| il_teardown_interface(il, vif, true); |
| vif->type = newtype; |
| vif->p2p = false; |
| err = il_set_mode(il); |
| WARN_ON(err); |
| /* |
| * We've switched internally, but submitting to the |
| * device may have failed for some reason. Mask this |
| * error, because otherwise mac80211 will not switch |
| * (and set the interface type back) and we'll be |
| * out of sync with it. |
| */ |
| err = 0; |
| |
| out: |
| D_MAC80211("leave err %d\n", err); |
| mutex_unlock(&il->mutex); |
| |
| return err; |
| } |
| EXPORT_SYMBOL(il_mac_change_interface); |
| |
| /* |
| * On every watchdog tick we check (latest) time stamp. If it does not |
| * change during timeout period and queue is not empty we reset firmware. |
| */ |
| static int |
| il_check_stuck_queue(struct il_priv *il, int cnt) |
| { |
| struct il_tx_queue *txq = &il->txq[cnt]; |
| struct il_queue *q = &txq->q; |
| unsigned long timeout; |
| unsigned long now = jiffies; |
| int ret; |
| |
| if (q->read_ptr == q->write_ptr) { |
| txq->time_stamp = now; |
| return 0; |
| } |
| |
| timeout = |
| txq->time_stamp + |
| msecs_to_jiffies(il->cfg->wd_timeout); |
| |
| if (time_after(now, timeout)) { |
| IL_ERR("Queue %d stuck for %u ms.\n", q->id, |
| jiffies_to_msecs(now - txq->time_stamp)); |
| ret = il_force_reset(il, false); |
| return (ret == -EAGAIN) ? 0 : 1; |
| } |
| |
| return 0; |
| } |
| |
| /* |
| * Making watchdog tick be a quarter of timeout assure we will |
| * discover the queue hung between timeout and 1.25*timeout |
| */ |
| #define IL_WD_TICK(timeout) ((timeout) / 4) |
| |
| /* |
| * Watchdog timer callback, we check each tx queue for stuck, if if hung |
| * we reset the firmware. If everything is fine just rearm the timer. |
| */ |
| void |
| il_bg_watchdog(unsigned long data) |
| { |
| struct il_priv *il = (struct il_priv *)data; |
| int cnt; |
| unsigned long timeout; |
| |
| if (test_bit(S_EXIT_PENDING, &il->status)) |
| return; |
| |
| timeout = il->cfg->wd_timeout; |
| if (timeout == 0) |
| return; |
| |
| /* monitor and check for stuck cmd queue */ |
| if (il_check_stuck_queue(il, il->cmd_queue)) |
| return; |
| |
| /* monitor and check for other stuck queues */ |
| if (il_is_any_associated(il)) { |
| for (cnt = 0; cnt < il->hw_params.max_txq_num; cnt++) { |
| /* skip as we already checked the command queue */ |
| if (cnt == il->cmd_queue) |
| continue; |
| if (il_check_stuck_queue(il, cnt)) |
| return; |
| } |
| } |
| |
| mod_timer(&il->watchdog, |
| jiffies + msecs_to_jiffies(IL_WD_TICK(timeout))); |
| } |
| EXPORT_SYMBOL(il_bg_watchdog); |
| |
| void |
| il_setup_watchdog(struct il_priv *il) |
| { |
| unsigned int timeout = il->cfg->wd_timeout; |
| |
| if (timeout) |
| mod_timer(&il->watchdog, |
| jiffies + msecs_to_jiffies(IL_WD_TICK(timeout))); |
| else |
| del_timer(&il->watchdog); |
| } |
| EXPORT_SYMBOL(il_setup_watchdog); |
| |
| /* |
| * extended beacon time format |
| * time in usec will be changed into a 32-bit value in extended:internal format |
| * the extended part is the beacon counts |
| * the internal part is the time in usec within one beacon interval |
| */ |
| u32 |
| il_usecs_to_beacons(struct il_priv *il, u32 usec, u32 beacon_interval) |
| { |
| u32 quot; |
| u32 rem; |
| u32 interval = beacon_interval * TIME_UNIT; |
| |
| if (!interval || !usec) |
| return 0; |
| |
| quot = |
| (usec / |
| interval) & (il_beacon_time_mask_high(il, |
| il->hw_params. |
| beacon_time_tsf_bits) >> il-> |
| hw_params.beacon_time_tsf_bits); |
| rem = |
| (usec % interval) & il_beacon_time_mask_low(il, |
| il->hw_params. |
| beacon_time_tsf_bits); |
| |
| return (quot << il->hw_params.beacon_time_tsf_bits) + rem; |
| } |
| EXPORT_SYMBOL(il_usecs_to_beacons); |
| |
| /* base is usually what we get from ucode with each received frame, |
| * the same as HW timer counter counting down |
| */ |
| __le32 |
| il_add_beacon_time(struct il_priv *il, u32 base, u32 addon, |
| u32 beacon_interval) |
| { |
| u32 base_low = base & il_beacon_time_mask_low(il, |
| il->hw_params. |
| beacon_time_tsf_bits); |
| u32 addon_low = addon & il_beacon_time_mask_low(il, |
| il->hw_params. |
| beacon_time_tsf_bits); |
| u32 interval = beacon_interval * TIME_UNIT; |
| u32 res = (base & il_beacon_time_mask_high(il, |
| il->hw_params. |
| beacon_time_tsf_bits)) + |
| (addon & il_beacon_time_mask_high(il, |
| il->hw_params. |
| beacon_time_tsf_bits)); |
| |
| if (base_low > addon_low) |
| res += base_low - addon_low; |
| else if (base_low < addon_low) { |
| res += interval + base_low - addon_low; |
| res += (1 << il->hw_params.beacon_time_tsf_bits); |
| } else |
| res += (1 << il->hw_params.beacon_time_tsf_bits); |
| |
| return cpu_to_le32(res); |
| } |
| EXPORT_SYMBOL(il_add_beacon_time); |
| |
| #ifdef CONFIG_PM |
| |
| int |
| il_pci_suspend(struct device *device) |
| { |
| struct pci_dev *pdev = to_pci_dev(device); |
| struct il_priv *il = pci_get_drvdata(pdev); |
| |
| /* |
| * This function is called when system goes into suspend state |
| * mac80211 will call il_mac_stop() from the mac80211 suspend function |
| * first but since il_mac_stop() has no knowledge of who the caller is, |
| * it will not call apm_ops.stop() to stop the DMA operation. |
| * Calling apm_ops.stop here to make sure we stop the DMA. |
| */ |
| il_apm_stop(il); |
| |
| return 0; |
| } |
| EXPORT_SYMBOL(il_pci_suspend); |
| |
| int |
| il_pci_resume(struct device *device) |
| { |
| struct pci_dev *pdev = to_pci_dev(device); |
| struct il_priv *il = pci_get_drvdata(pdev); |
| bool hw_rfkill = false; |
| |
| /* |
| * We disable the RETRY_TIMEOUT register (0x41) to keep |
| * PCI Tx retries from interfering with C3 CPU state. |
| */ |
| pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00); |
| |
| il_enable_interrupts(il); |
| |
| if (!(_il_rd(il, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)) |
| hw_rfkill = true; |
| |
| if (hw_rfkill) |
| set_bit(S_RFKILL, &il->status); |
| else |
| clear_bit(S_RFKILL, &il->status); |
| |
| wiphy_rfkill_set_hw_state(il->hw->wiphy, hw_rfkill); |
| |
| return 0; |
| } |
| EXPORT_SYMBOL(il_pci_resume); |
| |
| const struct dev_pm_ops il_pm_ops = { |
| .suspend = il_pci_suspend, |
| .resume = il_pci_resume, |
| .freeze = il_pci_suspend, |
| .thaw = il_pci_resume, |
| .poweroff = il_pci_suspend, |
| .restore = il_pci_resume, |
| }; |
| EXPORT_SYMBOL(il_pm_ops); |
| |
| #endif /* CONFIG_PM */ |
| |
| static void |
| il_update_qos(struct il_priv *il) |
| { |
| if (test_bit(S_EXIT_PENDING, &il->status)) |
| return; |
| |
| il->qos_data.def_qos_parm.qos_flags = 0; |
| |
| if (il->qos_data.qos_active) |
| il->qos_data.def_qos_parm.qos_flags |= |
| QOS_PARAM_FLG_UPDATE_EDCA_MSK; |
| |
| if (il->ht.enabled) |
| il->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK; |
| |
| D_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n", |
| il->qos_data.qos_active, il->qos_data.def_qos_parm.qos_flags); |
| |
| il_send_cmd_pdu_async(il, C_QOS_PARAM, sizeof(struct il_qosparam_cmd), |
| &il->qos_data.def_qos_parm, NULL); |
| } |
| |
| /** |
| * il_mac_config - mac80211 config callback |
| */ |
| int |
| il_mac_config(struct ieee80211_hw *hw, u32 changed) |
| { |
| struct il_priv *il = hw->priv; |
| const struct il_channel_info *ch_info; |
| struct ieee80211_conf *conf = &hw->conf; |
| struct ieee80211_channel *channel = conf->channel; |
| struct il_ht_config *ht_conf = &il->current_ht_config; |
| unsigned long flags = 0; |
| int ret = 0; |
| u16 ch; |
| int scan_active = 0; |
| bool ht_changed = false; |
| |
| mutex_lock(&il->mutex); |
| D_MAC80211("enter: channel %d changed 0x%X\n", channel->hw_value, |
| changed); |
| |
| if (unlikely(test_bit(S_SCANNING, &il->status))) { |
| scan_active = 1; |
| D_MAC80211("scan active\n"); |
| } |
| |
| if (changed & |
| (IEEE80211_CONF_CHANGE_SMPS | IEEE80211_CONF_CHANGE_CHANNEL)) { |
| /* mac80211 uses static for non-HT which is what we want */ |
| il->current_ht_config.smps = conf->smps_mode; |
| |
| /* |
| * Recalculate chain counts. |
| * |
| * If monitor mode is enabled then mac80211 will |
| * set up the SM PS mode to OFF if an HT channel is |
| * configured. |
| */ |
| if (il->ops->set_rxon_chain) |
| il->ops->set_rxon_chain(il); |
| } |
| |
| /* during scanning mac80211 will delay channel setting until |
| * scan finish with changed = 0 |
| */ |
| if (!changed || (changed & IEEE80211_CONF_CHANGE_CHANNEL)) { |
| |
| if (scan_active) |
| goto set_ch_out; |
| |
| ch = channel->hw_value; |
| ch_info = il_get_channel_info(il, channel->band, ch); |
| if (!il_is_channel_valid(ch_info)) { |
| D_MAC80211("leave - invalid channel\n"); |
| ret = -EINVAL; |
| goto set_ch_out; |
| } |
| |
| if (il->iw_mode == NL80211_IFTYPE_ADHOC && |
| !il_is_channel_ibss(ch_info)) { |
| D_MAC80211("leave - not IBSS channel\n"); |
| ret = -EINVAL; |
| goto set_ch_out; |
| } |
| |
| spin_lock_irqsave(&il->lock, flags); |
| |
| /* Configure HT40 channels */ |
| if (il->ht.enabled != conf_is_ht(conf)) { |
| il->ht.enabled = conf_is_ht(conf); |
| ht_changed = true; |
| } |
| if (il->ht.enabled) { |
| if (conf_is_ht40_minus(conf)) { |
| il->ht.extension_chan_offset = |
| IEEE80211_HT_PARAM_CHA_SEC_BELOW; |
| il->ht.is_40mhz = true; |
| } else if (conf_is_ht40_plus(conf)) { |
| il->ht.extension_chan_offset = |
| IEEE80211_HT_PARAM_CHA_SEC_ABOVE; |
| il->ht.is_40mhz = true; |
| } else { |
| il->ht.extension_chan_offset = |
| IEEE80211_HT_PARAM_CHA_SEC_NONE; |
| il->ht.is_40mhz = false; |
| } |
| } else |
| il->ht.is_40mhz = false; |
| |
| /* |
| * Default to no protection. Protection mode will |
| * later be set from BSS config in il_ht_conf |
| */ |
| il->ht.protection = IEEE80211_HT_OP_MODE_PROTECTION_NONE; |
| |
| /* if we are switching from ht to 2.4 clear flags |
| * from any ht related info since 2.4 does not |
| * support ht */ |
| if ((le16_to_cpu(il->staging.channel) != ch)) |
| il->staging.flags = 0; |
| |
| il_set_rxon_channel(il, channel); |
| il_set_rxon_ht(il, ht_conf); |
| |
| il_set_flags_for_band(il, channel->band, il->vif); |
| |
| spin_unlock_irqrestore(&il->lock, flags); |
| |
| if (il->ops->update_bcast_stations) |
| ret = il->ops->update_bcast_stations(il); |
| |
| set_ch_out: |
| /* The list of supported rates and rate mask can be different |
| * for each band; since the band may have changed, reset |
| * the rate mask to what mac80211 lists */ |
| il_set_rate(il); |
| } |
| |
| if (changed & (IEEE80211_CONF_CHANGE_PS | IEEE80211_CONF_CHANGE_IDLE)) { |
| ret = il_power_update_mode(il, false); |
| if (ret) |
| D_MAC80211("Error setting sleep level\n"); |
| } |
| |
| if (changed & IEEE80211_CONF_CHANGE_POWER) { |
| D_MAC80211("TX Power old=%d new=%d\n", il->tx_power_user_lmt, |
| conf->power_level); |
| |
| il_set_tx_power(il, conf->power_level, false); |
| } |
| |
| if (!il_is_ready(il)) { |
| D_MAC80211("leave - not ready\n"); |
| goto out; |
| } |
| |
| if (scan_active) |
| goto out; |
| |
| if (memcmp(&il->active, &il->staging, sizeof(il->staging))) |
| il_commit_rxon(il); |
| else |
| D_INFO("Not re-sending same RXON configuration.\n"); |
| if (ht_changed) |
| il_update_qos(il); |
| |
| out: |
| D_MAC80211("leave ret %d\n", ret); |
| mutex_unlock(&il->mutex); |
| |
| return ret; |
| } |
| EXPORT_SYMBOL(il_mac_config); |
| |
| void |
| il_mac_reset_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif) |
| { |
| struct il_priv *il = hw->priv; |
| unsigned long flags; |
| |
| mutex_lock(&il->mutex); |
| D_MAC80211("enter: type %d, addr %pM\n", vif->type, vif->addr); |
| |
| spin_lock_irqsave(&il->lock, flags); |
| |
| memset(&il->current_ht_config, 0, sizeof(struct il_ht_config)); |
| |
| /* new association get rid of ibss beacon skb */ |
| if (il->beacon_skb) |
| dev_kfree_skb(il->beacon_skb); |
| il->beacon_skb = NULL; |
| il->timestamp = 0; |
| |
| spin_unlock_irqrestore(&il->lock, flags); |
| |
| il_scan_cancel_timeout(il, 100); |
| if (!il_is_ready_rf(il)) { |
| D_MAC80211("leave - not ready\n"); |
| mutex_unlock(&il->mutex); |
| return; |
| } |
| |
| /* we are restarting association process */ |
| il->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK; |
| il_commit_rxon(il); |
| |
| il_set_rate(il); |
| |
| D_MAC80211("leave\n"); |
| mutex_unlock(&il->mutex); |
| } |
| EXPORT_SYMBOL(il_mac_reset_tsf); |
| |
| static void |
| il_ht_conf(struct il_priv *il, struct ieee80211_vif *vif) |
| { |
| struct il_ht_config *ht_conf = &il->current_ht_config; |
| struct ieee80211_sta *sta; |
| struct ieee80211_bss_conf *bss_conf = &vif->bss_conf; |
| |
| D_ASSOC("enter:\n"); |
| |
| if (!il->ht.enabled) |
| return; |
| |
| il->ht.protection = |
| bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_PROTECTION; |
| il->ht.non_gf_sta_present = |
| !!(bss_conf-> |
| ht_operation_mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT); |
| |
| ht_conf->single_chain_sufficient = false; |
| |
| switch (vif->type) { |
| case NL80211_IFTYPE_STATION: |
| rcu_read_lock(); |
| sta = ieee80211_find_sta(vif, bss_conf->bssid); |
| if (sta) { |
| struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap; |
| int maxstreams; |
| |
| maxstreams = |
| (ht_cap->mcs. |
| tx_params & IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK) |
| >> IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT; |
| maxstreams += 1; |
| |
| if (ht_cap->mcs.rx_mask[1] == 0 && |
| ht_cap->mcs.rx_mask[2] == 0) |
| ht_conf->single_chain_sufficient = true; |
| if (maxstreams <= 1) |
| ht_conf->single_chain_sufficient = true; |
| } else { |
| /* |
| * If at all, this can only happen through a race |
| * when the AP disconnects us while we're still |
| * setting up the connection, in that case mac80211 |
| * will soon tell us about that. |
| */ |
| ht_conf->single_chain_sufficient = true; |
| } |
| rcu_read_unlock(); |
| break; |
| case NL80211_IFTYPE_ADHOC: |
| ht_conf->single_chain_sufficient = true; |
| break; |
| default: |
| break; |
| } |
| |
| D_ASSOC("leave\n"); |
| } |
| |
| static inline void |
| il_set_no_assoc(struct il_priv *il, struct ieee80211_vif *vif) |
| { |
| /* |
| * inform the ucode that there is no longer an |
| * association and that no more packets should be |
| * sent |
| */ |
| il->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK; |
| il->staging.assoc_id = 0; |
| il_commit_rxon(il); |
| } |
| |
| static void |
| il_beacon_update(struct ieee80211_hw *hw, struct ieee80211_vif *vif) |
| { |
| struct il_priv *il = hw->priv; |
| unsigned long flags; |
| __le64 timestamp; |
| struct sk_buff *skb = ieee80211_beacon_get(hw, vif); |
| |
| if (!skb) |
| return; |
| |
| D_MAC80211("enter\n"); |
| |
| lockdep_assert_held(&il->mutex); |
| |
| if (!il->beacon_enabled) { |
| IL_ERR("update beacon with no beaconing enabled\n"); |
| dev_kfree_skb(skb); |
| return; |
| } |
| |
| spin_lock_irqsave(&il->lock, flags); |
| |
| if (il->beacon_skb) |
| dev_kfree_skb(il->beacon_skb); |
| |
| il->beacon_skb = skb; |
| |
| timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp; |
| il->timestamp = le64_to_cpu(timestamp); |
| |
| D_MAC80211("leave\n"); |
| spin_unlock_irqrestore(&il->lock, flags); |
| |
| if (!il_is_ready_rf(il)) { |
| D_MAC80211("leave - RF not ready\n"); |
| return; |
| } |
| |
| il->ops->post_associate(il); |
| } |
| |
| void |
| il_mac_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif, |
| struct ieee80211_bss_conf *bss_conf, u32 changes) |
| { |
| struct il_priv *il = hw->priv; |
| int ret; |
| |
| mutex_lock(&il->mutex); |
| D_MAC80211("enter: changes 0x%x\n", changes); |
| |
| if (!il_is_alive(il)) { |
| D_MAC80211("leave - not alive\n"); |
| mutex_unlock(&il->mutex); |
| return; |
| } |
| |
| if (changes & BSS_CHANGED_QOS) { |
| unsigned long flags; |
| |
| spin_lock_irqsave(&il->lock, flags); |
| il->qos_data.qos_active = bss_conf->qos; |
| il_update_qos(il); |
| spin_unlock_irqrestore(&il->lock, flags); |
| } |
| |
| if (changes & BSS_CHANGED_BEACON_ENABLED) { |
| /* FIXME: can we remove beacon_enabled ? */ |
| if (vif->bss_conf.enable_beacon) |
| il->beacon_enabled = true; |
| else |
| il->beacon_enabled = false; |
| } |
| |
| if (changes & BSS_CHANGED_BSSID) { |
| D_MAC80211("BSSID %pM\n", bss_conf->bssid); |
| |
| /* |
| * If there is currently a HW scan going on in the background, |
| * then we need to cancel it, otherwise sometimes we are not |
| * able to authenticate (FIXME: why ?) |
| */ |
| if (il_scan_cancel_timeout(il, 100)) { |
| D_MAC80211("leave - scan abort failed\n"); |
| mutex_unlock(&il->mutex); |
| return; |
| } |
| |
| /* mac80211 only sets assoc when in STATION mode */ |
| memcpy(il->staging.bssid_addr, bss_conf->bssid, ETH_ALEN); |
| |
| /* FIXME: currently needed in a few places */ |
| memcpy(il->bssid, bss_conf->bssid, ETH_ALEN); |
| } |
| |
| /* |
| * This needs to be after setting the BSSID in case |
| * mac80211 decides to do both changes at once because |
| * it will invoke post_associate. |
| */ |
| if (vif->type == NL80211_IFTYPE_ADHOC && (changes & BSS_CHANGED_BEACON)) |
| il_beacon_update(hw, vif); |
| |
| if (changes & BSS_CHANGED_ERP_PREAMBLE) { |
| D_MAC80211("ERP_PREAMBLE %d\n", bss_conf->use_short_preamble); |
| if (bss_conf->use_short_preamble) |
| il->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK; |
| else |
| il->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK; |
| } |
| |
| if (changes & BSS_CHANGED_ERP_CTS_PROT) { |
| D_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot); |
| if (bss_conf->use_cts_prot && il->band != IEEE80211_BAND_5GHZ) |
| il->staging.flags |= RXON_FLG_TGG_PROTECT_MSK; |
| else |
| il->staging.flags &= ~RXON_FLG_TGG_PROTECT_MSK; |
| if (bss_conf->use_cts_prot) |
| il->staging.flags |= RXON_FLG_SELF_CTS_EN; |
| else |
| il->staging.flags &= ~RXON_FLG_SELF_CTS_EN; |
| } |
| |
| if (changes & BSS_CHANGED_BASIC_RATES) { |
| /* XXX use this information |
| * |
| * To do that, remove code from il_set_rate() and put something |
| * like this here: |
| * |
| if (A-band) |
| il->staging.ofdm_basic_rates = |
| bss_conf->basic_rates; |
| else |
| il->staging.ofdm_basic_rates = |
| bss_conf->basic_rates >> 4; |
| il->staging.cck_basic_rates = |
| bss_conf->basic_rates & 0xF; |
| */ |
| } |
| |
| if (changes & BSS_CHANGED_HT) { |
| il_ht_conf(il, vif); |
| |
| if (il->ops->set_rxon_chain) |
| il->ops->set_rxon_chain(il); |
| } |
| |
| if (changes & BSS_CHANGED_ASSOC) { |
| D_MAC80211("ASSOC %d\n", bss_conf->assoc); |
| if (bss_conf->assoc) { |
| il->timestamp = bss_conf->last_tsf; |
| |
| if (!il_is_rfkill(il)) |
| il->ops->post_associate(il); |
| } else |
| il_set_no_assoc(il, vif); |
| } |
| |
| if (changes && il_is_associated(il) && bss_conf->aid) { |
| D_MAC80211("Changes (%#x) while associated\n", changes); |
| ret = il_send_rxon_assoc(il); |
| if (!ret) { |
| /* Sync active_rxon with latest change. */ |
| memcpy((void *)&il->active, &il->staging, |
| sizeof(struct il_rxon_cmd)); |
| } |
| } |
| |
| if (changes & BSS_CHANGED_BEACON_ENABLED) { |
| if (vif->bss_conf.enable_beacon) { |
| memcpy(il->staging.bssid_addr, bss_conf->bssid, |
| ETH_ALEN); |
| memcpy(il->bssid, bss_conf->bssid, ETH_ALEN); |
| il->ops->config_ap(il); |
| } else |
| il_set_no_assoc(il, vif); |
| } |
| |
| if (changes & BSS_CHANGED_IBSS) { |
| ret = il->ops->manage_ibss_station(il, vif, |
| bss_conf->ibss_joined); |
| if (ret) |
| IL_ERR("failed to %s IBSS station %pM\n", |
| bss_conf->ibss_joined ? "add" : "remove", |
| bss_conf->bssid); |
| } |
| |
| D_MAC80211("leave\n"); |
| mutex_unlock(&il->mutex); |
| } |
| EXPORT_SYMBOL(il_mac_bss_info_changed); |
| |
| irqreturn_t |
| il_isr(int irq, void *data) |
| { |
| struct il_priv *il = data; |
| u32 inta, inta_mask; |
| u32 inta_fh; |
| unsigned long flags; |
| if (!il) |
| return IRQ_NONE; |
| |
| spin_lock_irqsave(&il->lock, flags); |
| |
| /* Disable (but don't clear!) interrupts here to avoid |
| * back-to-back ISRs and sporadic interrupts from our NIC. |
| * If we have something to service, the tasklet will re-enable ints. |
| * If we *don't* have something, we'll re-enable before leaving here. */ |
| inta_mask = _il_rd(il, CSR_INT_MASK); /* just for debug */ |
| _il_wr(il, CSR_INT_MASK, 0x00000000); |
| |
| /* Discover which interrupts are active/pending */ |
| inta = _il_rd(il, CSR_INT); |
| inta_fh = _il_rd(il, CSR_FH_INT_STATUS); |
| |
| /* Ignore interrupt if there's nothing in NIC to service. |
| * This may be due to IRQ shared with another device, |
| * or due to sporadic interrupts thrown from our NIC. */ |
| if (!inta && !inta_fh) { |
| D_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n"); |
| goto none; |
| } |
| |
| if (inta == 0xFFFFFFFF || (inta & 0xFFFFFFF0) == 0xa5a5a5a0) { |
| /* Hardware disappeared. It might have already raised |
| * an interrupt */ |
| IL_WARN("HARDWARE GONE?? INTA == 0x%08x\n", inta); |
| goto unplugged; |
| } |
| |
| D_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n", inta, inta_mask, |
| inta_fh); |
| |
| inta &= ~CSR_INT_BIT_SCD; |
| |
| /* il_irq_tasklet() will service interrupts and re-enable them */ |
| if (likely(inta || inta_fh)) |
| tasklet_schedule(&il->irq_tasklet); |
| |
| unplugged: |
| spin_unlock_irqrestore(&il->lock, flags); |
| return IRQ_HANDLED; |
| |
| none: |
| /* re-enable interrupts here since we don't have anything to service. */ |
| /* only Re-enable if disabled by irq */ |
| if (test_bit(S_INT_ENABLED, &il->status)) |
| il_enable_interrupts(il); |
| spin_unlock_irqrestore(&il->lock, flags); |
| return IRQ_NONE; |
| } |
| EXPORT_SYMBOL(il_isr); |
| |
| /* |
| * il_tx_cmd_protection: Set rts/cts. 3945 and 4965 only share this |
| * function. |
| */ |
| void |
| il_tx_cmd_protection(struct il_priv *il, struct ieee80211_tx_info *info, |
| __le16 fc, __le32 *tx_flags) |
| { |
| if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) { |
| *tx_flags |= TX_CMD_FLG_RTS_MSK; |
| *tx_flags &= ~TX_CMD_FLG_CTS_MSK; |
| *tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK; |
| |
| if (!ieee80211_is_mgmt(fc)) |
| return; |
| |
| switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) { |
| case cpu_to_le16(IEEE80211_STYPE_AUTH): |
| case cpu_to_le16(IEEE80211_STYPE_DEAUTH): |
| case cpu_to_le16(IEEE80211_STYPE_ASSOC_REQ): |
| case cpu_to_le16(IEEE80211_STYPE_REASSOC_REQ): |
| *tx_flags &= ~TX_CMD_FLG_RTS_MSK; |
| *tx_flags |= TX_CMD_FLG_CTS_MSK; |
| break; |
| } |
| } else if (info->control.rates[0]. |
| flags & IEEE80211_TX_RC_USE_CTS_PROTECT) { |
| *tx_flags &= ~TX_CMD_FLG_RTS_MSK; |
| *tx_flags |= TX_CMD_FLG_CTS_MSK; |
| *tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK; |
| } |
| } |
| EXPORT_SYMBOL(il_tx_cmd_protection); |