| /* |
| * drivers/net/wireless/mwl8k.c |
| * Driver for Marvell TOPDOG 802.11 Wireless cards |
| * |
| * Copyright (C) 2008, 2009, 2010 Marvell Semiconductor Inc. |
| * |
| * This file is licensed under the terms of the GNU General Public |
| * License version 2. This program is licensed "as is" without any |
| * warranty of any kind, whether express or implied. |
| */ |
| |
| #include <linux/init.h> |
| #include <linux/module.h> |
| #include <linux/kernel.h> |
| #include <linux/sched.h> |
| #include <linux/spinlock.h> |
| #include <linux/list.h> |
| #include <linux/pci.h> |
| #include <linux/delay.h> |
| #include <linux/completion.h> |
| #include <linux/etherdevice.h> |
| #include <linux/slab.h> |
| #include <net/mac80211.h> |
| #include <linux/moduleparam.h> |
| #include <linux/firmware.h> |
| #include <linux/workqueue.h> |
| |
| #define MWL8K_DESC "Marvell TOPDOG(R) 802.11 Wireless Network Driver" |
| #define MWL8K_NAME KBUILD_MODNAME |
| #define MWL8K_VERSION "0.12" |
| |
| /* Module parameters */ |
| static unsigned ap_mode_default; |
| module_param(ap_mode_default, bool, 0); |
| MODULE_PARM_DESC(ap_mode_default, |
| "Set to 1 to make ap mode the default instead of sta mode"); |
| |
| /* Register definitions */ |
| #define MWL8K_HIU_GEN_PTR 0x00000c10 |
| #define MWL8K_MODE_STA 0x0000005a |
| #define MWL8K_MODE_AP 0x000000a5 |
| #define MWL8K_HIU_INT_CODE 0x00000c14 |
| #define MWL8K_FWSTA_READY 0xf0f1f2f4 |
| #define MWL8K_FWAP_READY 0xf1f2f4a5 |
| #define MWL8K_INT_CODE_CMD_FINISHED 0x00000005 |
| #define MWL8K_HIU_SCRATCH 0x00000c40 |
| |
| /* Host->device communications */ |
| #define MWL8K_HIU_H2A_INTERRUPT_EVENTS 0x00000c18 |
| #define MWL8K_HIU_H2A_INTERRUPT_STATUS 0x00000c1c |
| #define MWL8K_HIU_H2A_INTERRUPT_MASK 0x00000c20 |
| #define MWL8K_HIU_H2A_INTERRUPT_CLEAR_SEL 0x00000c24 |
| #define MWL8K_HIU_H2A_INTERRUPT_STATUS_MASK 0x00000c28 |
| #define MWL8K_H2A_INT_DUMMY (1 << 20) |
| #define MWL8K_H2A_INT_RESET (1 << 15) |
| #define MWL8K_H2A_INT_DOORBELL (1 << 1) |
| #define MWL8K_H2A_INT_PPA_READY (1 << 0) |
| |
| /* Device->host communications */ |
| #define MWL8K_HIU_A2H_INTERRUPT_EVENTS 0x00000c2c |
| #define MWL8K_HIU_A2H_INTERRUPT_STATUS 0x00000c30 |
| #define MWL8K_HIU_A2H_INTERRUPT_MASK 0x00000c34 |
| #define MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL 0x00000c38 |
| #define MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK 0x00000c3c |
| #define MWL8K_A2H_INT_DUMMY (1 << 20) |
| #define MWL8K_A2H_INT_BA_WATCHDOG (1 << 14) |
| #define MWL8K_A2H_INT_CHNL_SWITCHED (1 << 11) |
| #define MWL8K_A2H_INT_QUEUE_EMPTY (1 << 10) |
| #define MWL8K_A2H_INT_RADAR_DETECT (1 << 7) |
| #define MWL8K_A2H_INT_RADIO_ON (1 << 6) |
| #define MWL8K_A2H_INT_RADIO_OFF (1 << 5) |
| #define MWL8K_A2H_INT_MAC_EVENT (1 << 3) |
| #define MWL8K_A2H_INT_OPC_DONE (1 << 2) |
| #define MWL8K_A2H_INT_RX_READY (1 << 1) |
| #define MWL8K_A2H_INT_TX_DONE (1 << 0) |
| |
| #define MWL8K_A2H_EVENTS (MWL8K_A2H_INT_DUMMY | \ |
| MWL8K_A2H_INT_CHNL_SWITCHED | \ |
| MWL8K_A2H_INT_QUEUE_EMPTY | \ |
| MWL8K_A2H_INT_RADAR_DETECT | \ |
| MWL8K_A2H_INT_RADIO_ON | \ |
| MWL8K_A2H_INT_RADIO_OFF | \ |
| MWL8K_A2H_INT_MAC_EVENT | \ |
| MWL8K_A2H_INT_OPC_DONE | \ |
| MWL8K_A2H_INT_RX_READY | \ |
| MWL8K_A2H_INT_TX_DONE | \ |
| MWL8K_A2H_INT_BA_WATCHDOG) |
| |
| #define MWL8K_RX_QUEUES 1 |
| #define MWL8K_TX_WMM_QUEUES 4 |
| #define MWL8K_MAX_AMPDU_QUEUES 8 |
| #define MWL8K_MAX_TX_QUEUES (MWL8K_TX_WMM_QUEUES + MWL8K_MAX_AMPDU_QUEUES) |
| #define mwl8k_tx_queues(priv) (MWL8K_TX_WMM_QUEUES + (priv)->num_ampdu_queues) |
| |
| struct rxd_ops { |
| int rxd_size; |
| void (*rxd_init)(void *rxd, dma_addr_t next_dma_addr); |
| void (*rxd_refill)(void *rxd, dma_addr_t addr, int len); |
| int (*rxd_process)(void *rxd, struct ieee80211_rx_status *status, |
| __le16 *qos, s8 *noise); |
| }; |
| |
| struct mwl8k_device_info { |
| char *part_name; |
| char *helper_image; |
| char *fw_image_sta; |
| char *fw_image_ap; |
| struct rxd_ops *ap_rxd_ops; |
| u32 fw_api_ap; |
| }; |
| |
| struct mwl8k_rx_queue { |
| int rxd_count; |
| |
| /* hw receives here */ |
| int head; |
| |
| /* refill descs here */ |
| int tail; |
| |
| void *rxd; |
| dma_addr_t rxd_dma; |
| struct { |
| struct sk_buff *skb; |
| DEFINE_DMA_UNMAP_ADDR(dma); |
| } *buf; |
| }; |
| |
| struct mwl8k_tx_queue { |
| /* hw transmits here */ |
| int head; |
| |
| /* sw appends here */ |
| int tail; |
| |
| unsigned int len; |
| struct mwl8k_tx_desc *txd; |
| dma_addr_t txd_dma; |
| struct sk_buff **skb; |
| }; |
| |
| enum { |
| AMPDU_NO_STREAM, |
| AMPDU_STREAM_NEW, |
| AMPDU_STREAM_IN_PROGRESS, |
| AMPDU_STREAM_ACTIVE, |
| }; |
| |
| struct mwl8k_ampdu_stream { |
| struct ieee80211_sta *sta; |
| u8 tid; |
| u8 state; |
| u8 idx; |
| u8 txq_idx; /* index of this stream in priv->txq */ |
| }; |
| |
| struct mwl8k_priv { |
| struct ieee80211_hw *hw; |
| struct pci_dev *pdev; |
| int irq; |
| |
| struct mwl8k_device_info *device_info; |
| |
| void __iomem *sram; |
| void __iomem *regs; |
| |
| /* firmware */ |
| const struct firmware *fw_helper; |
| const struct firmware *fw_ucode; |
| |
| /* hardware/firmware parameters */ |
| bool ap_fw; |
| struct rxd_ops *rxd_ops; |
| struct ieee80211_supported_band band_24; |
| struct ieee80211_channel channels_24[14]; |
| struct ieee80211_rate rates_24[14]; |
| struct ieee80211_supported_band band_50; |
| struct ieee80211_channel channels_50[4]; |
| struct ieee80211_rate rates_50[9]; |
| u32 ap_macids_supported; |
| u32 sta_macids_supported; |
| |
| /* Ampdu stream information */ |
| u8 num_ampdu_queues; |
| spinlock_t stream_lock; |
| struct mwl8k_ampdu_stream ampdu[MWL8K_MAX_AMPDU_QUEUES]; |
| struct work_struct watchdog_ba_handle; |
| |
| /* firmware access */ |
| struct mutex fw_mutex; |
| struct task_struct *fw_mutex_owner; |
| int fw_mutex_depth; |
| struct completion *hostcmd_wait; |
| |
| /* lock held over TX and TX reap */ |
| spinlock_t tx_lock; |
| |
| /* TX quiesce completion, protected by fw_mutex and tx_lock */ |
| struct completion *tx_wait; |
| |
| /* List of interfaces. */ |
| u32 macids_used; |
| struct list_head vif_list; |
| |
| /* power management status cookie from firmware */ |
| u32 *cookie; |
| dma_addr_t cookie_dma; |
| |
| u16 num_mcaddrs; |
| u8 hw_rev; |
| u32 fw_rev; |
| |
| /* |
| * Running count of TX packets in flight, to avoid |
| * iterating over the transmit rings each time. |
| */ |
| int pending_tx_pkts; |
| |
| struct mwl8k_rx_queue rxq[MWL8K_RX_QUEUES]; |
| struct mwl8k_tx_queue txq[MWL8K_MAX_TX_QUEUES]; |
| u32 txq_offset[MWL8K_MAX_TX_QUEUES]; |
| |
| bool radio_on; |
| bool radio_short_preamble; |
| bool sniffer_enabled; |
| bool wmm_enabled; |
| |
| /* XXX need to convert this to handle multiple interfaces */ |
| bool capture_beacon; |
| u8 capture_bssid[ETH_ALEN]; |
| struct sk_buff *beacon_skb; |
| |
| /* |
| * This FJ worker has to be global as it is scheduled from the |
| * RX handler. At this point we don't know which interface it |
| * belongs to until the list of bssids waiting to complete join |
| * is checked. |
| */ |
| struct work_struct finalize_join_worker; |
| |
| /* Tasklet to perform TX reclaim. */ |
| struct tasklet_struct poll_tx_task; |
| |
| /* Tasklet to perform RX. */ |
| struct tasklet_struct poll_rx_task; |
| |
| /* Most recently reported noise in dBm */ |
| s8 noise; |
| |
| /* |
| * preserve the queue configurations so they can be restored if/when |
| * the firmware image is swapped. |
| */ |
| struct ieee80211_tx_queue_params wmm_params[MWL8K_TX_WMM_QUEUES]; |
| |
| /* async firmware loading state */ |
| unsigned fw_state; |
| char *fw_pref; |
| char *fw_alt; |
| struct completion firmware_loading_complete; |
| }; |
| |
| #define MAX_WEP_KEY_LEN 13 |
| #define NUM_WEP_KEYS 4 |
| |
| /* Per interface specific private data */ |
| struct mwl8k_vif { |
| struct list_head list; |
| struct ieee80211_vif *vif; |
| |
| /* Firmware macid for this vif. */ |
| int macid; |
| |
| /* Non AMPDU sequence number assigned by driver. */ |
| u16 seqno; |
| |
| /* Saved WEP keys */ |
| struct { |
| u8 enabled; |
| u8 key[sizeof(struct ieee80211_key_conf) + MAX_WEP_KEY_LEN]; |
| } wep_key_conf[NUM_WEP_KEYS]; |
| |
| /* BSSID */ |
| u8 bssid[ETH_ALEN]; |
| |
| /* A flag to indicate is HW crypto is enabled for this bssid */ |
| bool is_hw_crypto_enabled; |
| }; |
| #define MWL8K_VIF(_vif) ((struct mwl8k_vif *)&((_vif)->drv_priv)) |
| #define IEEE80211_KEY_CONF(_u8) ((struct ieee80211_key_conf *)(_u8)) |
| |
| struct tx_traffic_info { |
| u32 start_time; |
| u32 pkts; |
| }; |
| |
| #define MWL8K_MAX_TID 8 |
| struct mwl8k_sta { |
| /* Index into station database. Returned by UPDATE_STADB. */ |
| u8 peer_id; |
| u8 is_ampdu_allowed; |
| struct tx_traffic_info tx_stats[MWL8K_MAX_TID]; |
| }; |
| #define MWL8K_STA(_sta) ((struct mwl8k_sta *)&((_sta)->drv_priv)) |
| |
| static const struct ieee80211_channel mwl8k_channels_24[] = { |
| { .center_freq = 2412, .hw_value = 1, }, |
| { .center_freq = 2417, .hw_value = 2, }, |
| { .center_freq = 2422, .hw_value = 3, }, |
| { .center_freq = 2427, .hw_value = 4, }, |
| { .center_freq = 2432, .hw_value = 5, }, |
| { .center_freq = 2437, .hw_value = 6, }, |
| { .center_freq = 2442, .hw_value = 7, }, |
| { .center_freq = 2447, .hw_value = 8, }, |
| { .center_freq = 2452, .hw_value = 9, }, |
| { .center_freq = 2457, .hw_value = 10, }, |
| { .center_freq = 2462, .hw_value = 11, }, |
| { .center_freq = 2467, .hw_value = 12, }, |
| { .center_freq = 2472, .hw_value = 13, }, |
| { .center_freq = 2484, .hw_value = 14, }, |
| }; |
| |
| static const struct ieee80211_rate mwl8k_rates_24[] = { |
| { .bitrate = 10, .hw_value = 2, }, |
| { .bitrate = 20, .hw_value = 4, }, |
| { .bitrate = 55, .hw_value = 11, }, |
| { .bitrate = 110, .hw_value = 22, }, |
| { .bitrate = 220, .hw_value = 44, }, |
| { .bitrate = 60, .hw_value = 12, }, |
| { .bitrate = 90, .hw_value = 18, }, |
| { .bitrate = 120, .hw_value = 24, }, |
| { .bitrate = 180, .hw_value = 36, }, |
| { .bitrate = 240, .hw_value = 48, }, |
| { .bitrate = 360, .hw_value = 72, }, |
| { .bitrate = 480, .hw_value = 96, }, |
| { .bitrate = 540, .hw_value = 108, }, |
| { .bitrate = 720, .hw_value = 144, }, |
| }; |
| |
| static const struct ieee80211_channel mwl8k_channels_50[] = { |
| { .center_freq = 5180, .hw_value = 36, }, |
| { .center_freq = 5200, .hw_value = 40, }, |
| { .center_freq = 5220, .hw_value = 44, }, |
| { .center_freq = 5240, .hw_value = 48, }, |
| }; |
| |
| static const struct ieee80211_rate mwl8k_rates_50[] = { |
| { .bitrate = 60, .hw_value = 12, }, |
| { .bitrate = 90, .hw_value = 18, }, |
| { .bitrate = 120, .hw_value = 24, }, |
| { .bitrate = 180, .hw_value = 36, }, |
| { .bitrate = 240, .hw_value = 48, }, |
| { .bitrate = 360, .hw_value = 72, }, |
| { .bitrate = 480, .hw_value = 96, }, |
| { .bitrate = 540, .hw_value = 108, }, |
| { .bitrate = 720, .hw_value = 144, }, |
| }; |
| |
| /* Set or get info from Firmware */ |
| #define MWL8K_CMD_GET 0x0000 |
| #define MWL8K_CMD_SET 0x0001 |
| #define MWL8K_CMD_SET_LIST 0x0002 |
| |
| /* Firmware command codes */ |
| #define MWL8K_CMD_CODE_DNLD 0x0001 |
| #define MWL8K_CMD_GET_HW_SPEC 0x0003 |
| #define MWL8K_CMD_SET_HW_SPEC 0x0004 |
| #define MWL8K_CMD_MAC_MULTICAST_ADR 0x0010 |
| #define MWL8K_CMD_GET_STAT 0x0014 |
| #define MWL8K_CMD_RADIO_CONTROL 0x001c |
| #define MWL8K_CMD_RF_TX_POWER 0x001e |
| #define MWL8K_CMD_TX_POWER 0x001f |
| #define MWL8K_CMD_RF_ANTENNA 0x0020 |
| #define MWL8K_CMD_SET_BEACON 0x0100 /* per-vif */ |
| #define MWL8K_CMD_SET_PRE_SCAN 0x0107 |
| #define MWL8K_CMD_SET_POST_SCAN 0x0108 |
| #define MWL8K_CMD_SET_RF_CHANNEL 0x010a |
| #define MWL8K_CMD_SET_AID 0x010d |
| #define MWL8K_CMD_SET_RATE 0x0110 |
| #define MWL8K_CMD_SET_FINALIZE_JOIN 0x0111 |
| #define MWL8K_CMD_RTS_THRESHOLD 0x0113 |
| #define MWL8K_CMD_SET_SLOT 0x0114 |
| #define MWL8K_CMD_SET_EDCA_PARAMS 0x0115 |
| #define MWL8K_CMD_SET_WMM_MODE 0x0123 |
| #define MWL8K_CMD_MIMO_CONFIG 0x0125 |
| #define MWL8K_CMD_USE_FIXED_RATE 0x0126 |
| #define MWL8K_CMD_ENABLE_SNIFFER 0x0150 |
| #define MWL8K_CMD_SET_MAC_ADDR 0x0202 /* per-vif */ |
| #define MWL8K_CMD_SET_RATEADAPT_MODE 0x0203 |
| #define MWL8K_CMD_GET_WATCHDOG_BITMAP 0x0205 |
| #define MWL8K_CMD_BSS_START 0x1100 /* per-vif */ |
| #define MWL8K_CMD_SET_NEW_STN 0x1111 /* per-vif */ |
| #define MWL8K_CMD_UPDATE_ENCRYPTION 0x1122 /* per-vif */ |
| #define MWL8K_CMD_UPDATE_STADB 0x1123 |
| #define MWL8K_CMD_BASTREAM 0x1125 |
| |
| static const char *mwl8k_cmd_name(__le16 cmd, char *buf, int bufsize) |
| { |
| u16 command = le16_to_cpu(cmd); |
| |
| #define MWL8K_CMDNAME(x) case MWL8K_CMD_##x: do {\ |
| snprintf(buf, bufsize, "%s", #x);\ |
| return buf;\ |
| } while (0) |
| switch (command & ~0x8000) { |
| MWL8K_CMDNAME(CODE_DNLD); |
| MWL8K_CMDNAME(GET_HW_SPEC); |
| MWL8K_CMDNAME(SET_HW_SPEC); |
| MWL8K_CMDNAME(MAC_MULTICAST_ADR); |
| MWL8K_CMDNAME(GET_STAT); |
| MWL8K_CMDNAME(RADIO_CONTROL); |
| MWL8K_CMDNAME(RF_TX_POWER); |
| MWL8K_CMDNAME(TX_POWER); |
| MWL8K_CMDNAME(RF_ANTENNA); |
| MWL8K_CMDNAME(SET_BEACON); |
| MWL8K_CMDNAME(SET_PRE_SCAN); |
| MWL8K_CMDNAME(SET_POST_SCAN); |
| MWL8K_CMDNAME(SET_RF_CHANNEL); |
| MWL8K_CMDNAME(SET_AID); |
| MWL8K_CMDNAME(SET_RATE); |
| MWL8K_CMDNAME(SET_FINALIZE_JOIN); |
| MWL8K_CMDNAME(RTS_THRESHOLD); |
| MWL8K_CMDNAME(SET_SLOT); |
| MWL8K_CMDNAME(SET_EDCA_PARAMS); |
| MWL8K_CMDNAME(SET_WMM_MODE); |
| MWL8K_CMDNAME(MIMO_CONFIG); |
| MWL8K_CMDNAME(USE_FIXED_RATE); |
| MWL8K_CMDNAME(ENABLE_SNIFFER); |
| MWL8K_CMDNAME(SET_MAC_ADDR); |
| MWL8K_CMDNAME(SET_RATEADAPT_MODE); |
| MWL8K_CMDNAME(BSS_START); |
| MWL8K_CMDNAME(SET_NEW_STN); |
| MWL8K_CMDNAME(UPDATE_ENCRYPTION); |
| MWL8K_CMDNAME(UPDATE_STADB); |
| MWL8K_CMDNAME(BASTREAM); |
| MWL8K_CMDNAME(GET_WATCHDOG_BITMAP); |
| default: |
| snprintf(buf, bufsize, "0x%x", cmd); |
| } |
| #undef MWL8K_CMDNAME |
| |
| return buf; |
| } |
| |
| /* Hardware and firmware reset */ |
| static void mwl8k_hw_reset(struct mwl8k_priv *priv) |
| { |
| iowrite32(MWL8K_H2A_INT_RESET, |
| priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); |
| iowrite32(MWL8K_H2A_INT_RESET, |
| priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); |
| msleep(20); |
| } |
| |
| /* Release fw image */ |
| static void mwl8k_release_fw(const struct firmware **fw) |
| { |
| if (*fw == NULL) |
| return; |
| release_firmware(*fw); |
| *fw = NULL; |
| } |
| |
| static void mwl8k_release_firmware(struct mwl8k_priv *priv) |
| { |
| mwl8k_release_fw(&priv->fw_ucode); |
| mwl8k_release_fw(&priv->fw_helper); |
| } |
| |
| /* states for asynchronous f/w loading */ |
| static void mwl8k_fw_state_machine(const struct firmware *fw, void *context); |
| enum { |
| FW_STATE_INIT = 0, |
| FW_STATE_LOADING_PREF, |
| FW_STATE_LOADING_ALT, |
| FW_STATE_ERROR, |
| }; |
| |
| /* Request fw image */ |
| static int mwl8k_request_fw(struct mwl8k_priv *priv, |
| const char *fname, const struct firmware **fw, |
| bool nowait) |
| { |
| /* release current image */ |
| if (*fw != NULL) |
| mwl8k_release_fw(fw); |
| |
| if (nowait) |
| return request_firmware_nowait(THIS_MODULE, 1, fname, |
| &priv->pdev->dev, GFP_KERNEL, |
| priv, mwl8k_fw_state_machine); |
| else |
| return request_firmware(fw, fname, &priv->pdev->dev); |
| } |
| |
| static int mwl8k_request_firmware(struct mwl8k_priv *priv, char *fw_image, |
| bool nowait) |
| { |
| struct mwl8k_device_info *di = priv->device_info; |
| int rc; |
| |
| if (di->helper_image != NULL) { |
| if (nowait) |
| rc = mwl8k_request_fw(priv, di->helper_image, |
| &priv->fw_helper, true); |
| else |
| rc = mwl8k_request_fw(priv, di->helper_image, |
| &priv->fw_helper, false); |
| if (rc) |
| printk(KERN_ERR "%s: Error requesting helper fw %s\n", |
| pci_name(priv->pdev), di->helper_image); |
| |
| if (rc || nowait) |
| return rc; |
| } |
| |
| if (nowait) { |
| /* |
| * if we get here, no helper image is needed. Skip the |
| * FW_STATE_INIT state. |
| */ |
| priv->fw_state = FW_STATE_LOADING_PREF; |
| rc = mwl8k_request_fw(priv, fw_image, |
| &priv->fw_ucode, |
| true); |
| } else |
| rc = mwl8k_request_fw(priv, fw_image, |
| &priv->fw_ucode, false); |
| if (rc) { |
| printk(KERN_ERR "%s: Error requesting firmware file %s\n", |
| pci_name(priv->pdev), fw_image); |
| mwl8k_release_fw(&priv->fw_helper); |
| return rc; |
| } |
| |
| return 0; |
| } |
| |
| struct mwl8k_cmd_pkt { |
| __le16 code; |
| __le16 length; |
| __u8 seq_num; |
| __u8 macid; |
| __le16 result; |
| char payload[0]; |
| } __packed; |
| |
| /* |
| * Firmware loading. |
| */ |
| static int |
| mwl8k_send_fw_load_cmd(struct mwl8k_priv *priv, void *data, int length) |
| { |
| void __iomem *regs = priv->regs; |
| dma_addr_t dma_addr; |
| int loops; |
| |
| dma_addr = pci_map_single(priv->pdev, data, length, PCI_DMA_TODEVICE); |
| if (pci_dma_mapping_error(priv->pdev, dma_addr)) |
| return -ENOMEM; |
| |
| iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR); |
| iowrite32(0, regs + MWL8K_HIU_INT_CODE); |
| iowrite32(MWL8K_H2A_INT_DOORBELL, |
| regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); |
| iowrite32(MWL8K_H2A_INT_DUMMY, |
| regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); |
| |
| loops = 1000; |
| do { |
| u32 int_code; |
| |
| int_code = ioread32(regs + MWL8K_HIU_INT_CODE); |
| if (int_code == MWL8K_INT_CODE_CMD_FINISHED) { |
| iowrite32(0, regs + MWL8K_HIU_INT_CODE); |
| break; |
| } |
| |
| cond_resched(); |
| udelay(1); |
| } while (--loops); |
| |
| pci_unmap_single(priv->pdev, dma_addr, length, PCI_DMA_TODEVICE); |
| |
| return loops ? 0 : -ETIMEDOUT; |
| } |
| |
| static int mwl8k_load_fw_image(struct mwl8k_priv *priv, |
| const u8 *data, size_t length) |
| { |
| struct mwl8k_cmd_pkt *cmd; |
| int done; |
| int rc = 0; |
| |
| cmd = kmalloc(sizeof(*cmd) + 256, GFP_KERNEL); |
| if (cmd == NULL) |
| return -ENOMEM; |
| |
| cmd->code = cpu_to_le16(MWL8K_CMD_CODE_DNLD); |
| cmd->seq_num = 0; |
| cmd->macid = 0; |
| cmd->result = 0; |
| |
| done = 0; |
| while (length) { |
| int block_size = length > 256 ? 256 : length; |
| |
| memcpy(cmd->payload, data + done, block_size); |
| cmd->length = cpu_to_le16(block_size); |
| |
| rc = mwl8k_send_fw_load_cmd(priv, cmd, |
| sizeof(*cmd) + block_size); |
| if (rc) |
| break; |
| |
| done += block_size; |
| length -= block_size; |
| } |
| |
| if (!rc) { |
| cmd->length = 0; |
| rc = mwl8k_send_fw_load_cmd(priv, cmd, sizeof(*cmd)); |
| } |
| |
| kfree(cmd); |
| |
| return rc; |
| } |
| |
| static int mwl8k_feed_fw_image(struct mwl8k_priv *priv, |
| const u8 *data, size_t length) |
| { |
| unsigned char *buffer; |
| int may_continue, rc = 0; |
| u32 done, prev_block_size; |
| |
| buffer = kmalloc(1024, GFP_KERNEL); |
| if (buffer == NULL) |
| return -ENOMEM; |
| |
| done = 0; |
| prev_block_size = 0; |
| may_continue = 1000; |
| while (may_continue > 0) { |
| u32 block_size; |
| |
| block_size = ioread32(priv->regs + MWL8K_HIU_SCRATCH); |
| if (block_size & 1) { |
| block_size &= ~1; |
| may_continue--; |
| } else { |
| done += prev_block_size; |
| length -= prev_block_size; |
| } |
| |
| if (block_size > 1024 || block_size > length) { |
| rc = -EOVERFLOW; |
| break; |
| } |
| |
| if (length == 0) { |
| rc = 0; |
| break; |
| } |
| |
| if (block_size == 0) { |
| rc = -EPROTO; |
| may_continue--; |
| udelay(1); |
| continue; |
| } |
| |
| prev_block_size = block_size; |
| memcpy(buffer, data + done, block_size); |
| |
| rc = mwl8k_send_fw_load_cmd(priv, buffer, block_size); |
| if (rc) |
| break; |
| } |
| |
| if (!rc && length != 0) |
| rc = -EREMOTEIO; |
| |
| kfree(buffer); |
| |
| return rc; |
| } |
| |
| static int mwl8k_load_firmware(struct ieee80211_hw *hw) |
| { |
| struct mwl8k_priv *priv = hw->priv; |
| const struct firmware *fw = priv->fw_ucode; |
| int rc; |
| int loops; |
| |
| if (!memcmp(fw->data, "\x01\x00\x00\x00", 4)) { |
| const struct firmware *helper = priv->fw_helper; |
| |
| if (helper == NULL) { |
| printk(KERN_ERR "%s: helper image needed but none " |
| "given\n", pci_name(priv->pdev)); |
| return -EINVAL; |
| } |
| |
| rc = mwl8k_load_fw_image(priv, helper->data, helper->size); |
| if (rc) { |
| printk(KERN_ERR "%s: unable to load firmware " |
| "helper image\n", pci_name(priv->pdev)); |
| return rc; |
| } |
| msleep(20); |
| |
| rc = mwl8k_feed_fw_image(priv, fw->data, fw->size); |
| } else { |
| rc = mwl8k_load_fw_image(priv, fw->data, fw->size); |
| } |
| |
| if (rc) { |
| printk(KERN_ERR "%s: unable to load firmware image\n", |
| pci_name(priv->pdev)); |
| return rc; |
| } |
| |
| iowrite32(MWL8K_MODE_STA, priv->regs + MWL8K_HIU_GEN_PTR); |
| |
| loops = 500000; |
| do { |
| u32 ready_code; |
| |
| ready_code = ioread32(priv->regs + MWL8K_HIU_INT_CODE); |
| if (ready_code == MWL8K_FWAP_READY) { |
| priv->ap_fw = 1; |
| break; |
| } else if (ready_code == MWL8K_FWSTA_READY) { |
| priv->ap_fw = 0; |
| break; |
| } |
| |
| cond_resched(); |
| udelay(1); |
| } while (--loops); |
| |
| return loops ? 0 : -ETIMEDOUT; |
| } |
| |
| |
| /* DMA header used by firmware and hardware. */ |
| struct mwl8k_dma_data { |
| __le16 fwlen; |
| struct ieee80211_hdr wh; |
| char data[0]; |
| } __packed; |
| |
| /* Routines to add/remove DMA header from skb. */ |
| static inline void mwl8k_remove_dma_header(struct sk_buff *skb, __le16 qos) |
| { |
| struct mwl8k_dma_data *tr; |
| int hdrlen; |
| |
| tr = (struct mwl8k_dma_data *)skb->data; |
| hdrlen = ieee80211_hdrlen(tr->wh.frame_control); |
| |
| if (hdrlen != sizeof(tr->wh)) { |
| if (ieee80211_is_data_qos(tr->wh.frame_control)) { |
| memmove(tr->data - hdrlen, &tr->wh, hdrlen - 2); |
| *((__le16 *)(tr->data - 2)) = qos; |
| } else { |
| memmove(tr->data - hdrlen, &tr->wh, hdrlen); |
| } |
| } |
| |
| if (hdrlen != sizeof(*tr)) |
| skb_pull(skb, sizeof(*tr) - hdrlen); |
| } |
| |
| static void |
| mwl8k_add_dma_header(struct sk_buff *skb, int tail_pad) |
| { |
| struct ieee80211_hdr *wh; |
| int hdrlen; |
| int reqd_hdrlen; |
| struct mwl8k_dma_data *tr; |
| |
| /* |
| * Add a firmware DMA header; the firmware requires that we |
| * present a 2-byte payload length followed by a 4-address |
| * header (without QoS field), followed (optionally) by any |
| * WEP/ExtIV header (but only filled in for CCMP). |
| */ |
| wh = (struct ieee80211_hdr *)skb->data; |
| |
| hdrlen = ieee80211_hdrlen(wh->frame_control); |
| reqd_hdrlen = sizeof(*tr); |
| |
| if (hdrlen != reqd_hdrlen) |
| skb_push(skb, reqd_hdrlen - hdrlen); |
| |
| if (ieee80211_is_data_qos(wh->frame_control)) |
| hdrlen -= IEEE80211_QOS_CTL_LEN; |
| |
| tr = (struct mwl8k_dma_data *)skb->data; |
| if (wh != &tr->wh) |
| memmove(&tr->wh, wh, hdrlen); |
| if (hdrlen != sizeof(tr->wh)) |
| memset(((void *)&tr->wh) + hdrlen, 0, sizeof(tr->wh) - hdrlen); |
| |
| /* |
| * Firmware length is the length of the fully formed "802.11 |
| * payload". That is, everything except for the 802.11 header. |
| * This includes all crypto material including the MIC. |
| */ |
| tr->fwlen = cpu_to_le16(skb->len - sizeof(*tr) + tail_pad); |
| } |
| |
| static void mwl8k_encapsulate_tx_frame(struct sk_buff *skb) |
| { |
| struct ieee80211_hdr *wh; |
| struct ieee80211_tx_info *tx_info; |
| struct ieee80211_key_conf *key_conf; |
| int data_pad; |
| |
| wh = (struct ieee80211_hdr *)skb->data; |
| |
| tx_info = IEEE80211_SKB_CB(skb); |
| |
| key_conf = NULL; |
| if (ieee80211_is_data(wh->frame_control)) |
| key_conf = tx_info->control.hw_key; |
| |
| /* |
| * Make sure the packet header is in the DMA header format (4-address |
| * without QoS), the necessary crypto padding between the header and the |
| * payload has already been provided by mac80211, but it doesn't add |
| * tail padding when HW crypto is enabled. |
| * |
| * We have the following trailer padding requirements: |
| * - WEP: 4 trailer bytes (ICV) |
| * - TKIP: 12 trailer bytes (8 MIC + 4 ICV) |
| * - CCMP: 8 trailer bytes (MIC) |
| */ |
| data_pad = 0; |
| if (key_conf != NULL) { |
| switch (key_conf->cipher) { |
| case WLAN_CIPHER_SUITE_WEP40: |
| case WLAN_CIPHER_SUITE_WEP104: |
| data_pad = 4; |
| break; |
| case WLAN_CIPHER_SUITE_TKIP: |
| data_pad = 12; |
| break; |
| case WLAN_CIPHER_SUITE_CCMP: |
| data_pad = 8; |
| break; |
| } |
| } |
| mwl8k_add_dma_header(skb, data_pad); |
| } |
| |
| /* |
| * Packet reception for 88w8366 AP firmware. |
| */ |
| struct mwl8k_rxd_8366_ap { |
| __le16 pkt_len; |
| __u8 sq2; |
| __u8 rate; |
| __le32 pkt_phys_addr; |
| __le32 next_rxd_phys_addr; |
| __le16 qos_control; |
| __le16 htsig2; |
| __le32 hw_rssi_info; |
| __le32 hw_noise_floor_info; |
| __u8 noise_floor; |
| __u8 pad0[3]; |
| __u8 rssi; |
| __u8 rx_status; |
| __u8 channel; |
| __u8 rx_ctrl; |
| } __packed; |
| |
| #define MWL8K_8366_AP_RATE_INFO_MCS_FORMAT 0x80 |
| #define MWL8K_8366_AP_RATE_INFO_40MHZ 0x40 |
| #define MWL8K_8366_AP_RATE_INFO_RATEID(x) ((x) & 0x3f) |
| |
| #define MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST 0x80 |
| |
| /* 8366 AP rx_status bits */ |
| #define MWL8K_8366_AP_RXSTAT_DECRYPT_ERR_MASK 0x80 |
| #define MWL8K_8366_AP_RXSTAT_GENERAL_DECRYPT_ERR 0xFF |
| #define MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR 0x02 |
| #define MWL8K_8366_AP_RXSTAT_WEP_DECRYPT_ICV_ERR 0x04 |
| #define MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_ICV_ERR 0x08 |
| |
| static void mwl8k_rxd_8366_ap_init(void *_rxd, dma_addr_t next_dma_addr) |
| { |
| struct mwl8k_rxd_8366_ap *rxd = _rxd; |
| |
| rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr); |
| rxd->rx_ctrl = MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST; |
| } |
| |
| static void mwl8k_rxd_8366_ap_refill(void *_rxd, dma_addr_t addr, int len) |
| { |
| struct mwl8k_rxd_8366_ap *rxd = _rxd; |
| |
| rxd->pkt_len = cpu_to_le16(len); |
| rxd->pkt_phys_addr = cpu_to_le32(addr); |
| wmb(); |
| rxd->rx_ctrl = 0; |
| } |
| |
| static int |
| mwl8k_rxd_8366_ap_process(void *_rxd, struct ieee80211_rx_status *status, |
| __le16 *qos, s8 *noise) |
| { |
| struct mwl8k_rxd_8366_ap *rxd = _rxd; |
| |
| if (!(rxd->rx_ctrl & MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST)) |
| return -1; |
| rmb(); |
| |
| memset(status, 0, sizeof(*status)); |
| |
| status->signal = -rxd->rssi; |
| *noise = -rxd->noise_floor; |
| |
| if (rxd->rate & MWL8K_8366_AP_RATE_INFO_MCS_FORMAT) { |
| status->flag |= RX_FLAG_HT; |
| if (rxd->rate & MWL8K_8366_AP_RATE_INFO_40MHZ) |
| status->flag |= RX_FLAG_40MHZ; |
| status->rate_idx = MWL8K_8366_AP_RATE_INFO_RATEID(rxd->rate); |
| } else { |
| int i; |
| |
| for (i = 0; i < ARRAY_SIZE(mwl8k_rates_24); i++) { |
| if (mwl8k_rates_24[i].hw_value == rxd->rate) { |
| status->rate_idx = i; |
| break; |
| } |
| } |
| } |
| |
| if (rxd->channel > 14) { |
| status->band = IEEE80211_BAND_5GHZ; |
| if (!(status->flag & RX_FLAG_HT)) |
| status->rate_idx -= 5; |
| } else { |
| status->band = IEEE80211_BAND_2GHZ; |
| } |
| status->freq = ieee80211_channel_to_frequency(rxd->channel, |
| status->band); |
| |
| *qos = rxd->qos_control; |
| |
| if ((rxd->rx_status != MWL8K_8366_AP_RXSTAT_GENERAL_DECRYPT_ERR) && |
| (rxd->rx_status & MWL8K_8366_AP_RXSTAT_DECRYPT_ERR_MASK) && |
| (rxd->rx_status & MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR)) |
| status->flag |= RX_FLAG_MMIC_ERROR; |
| |
| return le16_to_cpu(rxd->pkt_len); |
| } |
| |
| static struct rxd_ops rxd_8366_ap_ops = { |
| .rxd_size = sizeof(struct mwl8k_rxd_8366_ap), |
| .rxd_init = mwl8k_rxd_8366_ap_init, |
| .rxd_refill = mwl8k_rxd_8366_ap_refill, |
| .rxd_process = mwl8k_rxd_8366_ap_process, |
| }; |
| |
| /* |
| * Packet reception for STA firmware. |
| */ |
| struct mwl8k_rxd_sta { |
| __le16 pkt_len; |
| __u8 link_quality; |
| __u8 noise_level; |
| __le32 pkt_phys_addr; |
| __le32 next_rxd_phys_addr; |
| __le16 qos_control; |
| __le16 rate_info; |
| __le32 pad0[4]; |
| __u8 rssi; |
| __u8 channel; |
| __le16 pad1; |
| __u8 rx_ctrl; |
| __u8 rx_status; |
| __u8 pad2[2]; |
| } __packed; |
| |
| #define MWL8K_STA_RATE_INFO_SHORTPRE 0x8000 |
| #define MWL8K_STA_RATE_INFO_ANTSELECT(x) (((x) >> 11) & 0x3) |
| #define MWL8K_STA_RATE_INFO_RATEID(x) (((x) >> 3) & 0x3f) |
| #define MWL8K_STA_RATE_INFO_40MHZ 0x0004 |
| #define MWL8K_STA_RATE_INFO_SHORTGI 0x0002 |
| #define MWL8K_STA_RATE_INFO_MCS_FORMAT 0x0001 |
| |
| #define MWL8K_STA_RX_CTRL_OWNED_BY_HOST 0x02 |
| #define MWL8K_STA_RX_CTRL_DECRYPT_ERROR 0x04 |
| /* ICV=0 or MIC=1 */ |
| #define MWL8K_STA_RX_CTRL_DEC_ERR_TYPE 0x08 |
| /* Key is uploaded only in failure case */ |
| #define MWL8K_STA_RX_CTRL_KEY_INDEX 0x30 |
| |
| static void mwl8k_rxd_sta_init(void *_rxd, dma_addr_t next_dma_addr) |
| { |
| struct mwl8k_rxd_sta *rxd = _rxd; |
| |
| rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr); |
| rxd->rx_ctrl = MWL8K_STA_RX_CTRL_OWNED_BY_HOST; |
| } |
| |
| static void mwl8k_rxd_sta_refill(void *_rxd, dma_addr_t addr, int len) |
| { |
| struct mwl8k_rxd_sta *rxd = _rxd; |
| |
| rxd->pkt_len = cpu_to_le16(len); |
| rxd->pkt_phys_addr = cpu_to_le32(addr); |
| wmb(); |
| rxd->rx_ctrl = 0; |
| } |
| |
| static int |
| mwl8k_rxd_sta_process(void *_rxd, struct ieee80211_rx_status *status, |
| __le16 *qos, s8 *noise) |
| { |
| struct mwl8k_rxd_sta *rxd = _rxd; |
| u16 rate_info; |
| |
| if (!(rxd->rx_ctrl & MWL8K_STA_RX_CTRL_OWNED_BY_HOST)) |
| return -1; |
| rmb(); |
| |
| rate_info = le16_to_cpu(rxd->rate_info); |
| |
| memset(status, 0, sizeof(*status)); |
| |
| status->signal = -rxd->rssi; |
| *noise = -rxd->noise_level; |
| status->antenna = MWL8K_STA_RATE_INFO_ANTSELECT(rate_info); |
| status->rate_idx = MWL8K_STA_RATE_INFO_RATEID(rate_info); |
| |
| if (rate_info & MWL8K_STA_RATE_INFO_SHORTPRE) |
| status->flag |= RX_FLAG_SHORTPRE; |
| if (rate_info & MWL8K_STA_RATE_INFO_40MHZ) |
| status->flag |= RX_FLAG_40MHZ; |
| if (rate_info & MWL8K_STA_RATE_INFO_SHORTGI) |
| status->flag |= RX_FLAG_SHORT_GI; |
| if (rate_info & MWL8K_STA_RATE_INFO_MCS_FORMAT) |
| status->flag |= RX_FLAG_HT; |
| |
| if (rxd->channel > 14) { |
| status->band = IEEE80211_BAND_5GHZ; |
| if (!(status->flag & RX_FLAG_HT)) |
| status->rate_idx -= 5; |
| } else { |
| status->band = IEEE80211_BAND_2GHZ; |
| } |
| status->freq = ieee80211_channel_to_frequency(rxd->channel, |
| status->band); |
| |
| *qos = rxd->qos_control; |
| if ((rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DECRYPT_ERROR) && |
| (rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DEC_ERR_TYPE)) |
| status->flag |= RX_FLAG_MMIC_ERROR; |
| |
| return le16_to_cpu(rxd->pkt_len); |
| } |
| |
| static struct rxd_ops rxd_sta_ops = { |
| .rxd_size = sizeof(struct mwl8k_rxd_sta), |
| .rxd_init = mwl8k_rxd_sta_init, |
| .rxd_refill = mwl8k_rxd_sta_refill, |
| .rxd_process = mwl8k_rxd_sta_process, |
| }; |
| |
| |
| #define MWL8K_RX_DESCS 256 |
| #define MWL8K_RX_MAXSZ 3800 |
| |
| static int mwl8k_rxq_init(struct ieee80211_hw *hw, int index) |
| { |
| struct mwl8k_priv *priv = hw->priv; |
| struct mwl8k_rx_queue *rxq = priv->rxq + index; |
| int size; |
| int i; |
| |
| rxq->rxd_count = 0; |
| rxq->head = 0; |
| rxq->tail = 0; |
| |
| size = MWL8K_RX_DESCS * priv->rxd_ops->rxd_size; |
| |
| rxq->rxd = pci_alloc_consistent(priv->pdev, size, &rxq->rxd_dma); |
| if (rxq->rxd == NULL) { |
| wiphy_err(hw->wiphy, "failed to alloc RX descriptors\n"); |
| return -ENOMEM; |
| } |
| memset(rxq->rxd, 0, size); |
| |
| rxq->buf = kcalloc(MWL8K_RX_DESCS, sizeof(*rxq->buf), GFP_KERNEL); |
| if (rxq->buf == NULL) { |
| wiphy_err(hw->wiphy, "failed to alloc RX skbuff list\n"); |
| pci_free_consistent(priv->pdev, size, rxq->rxd, rxq->rxd_dma); |
| return -ENOMEM; |
| } |
| |
| for (i = 0; i < MWL8K_RX_DESCS; i++) { |
| int desc_size; |
| void *rxd; |
| int nexti; |
| dma_addr_t next_dma_addr; |
| |
| desc_size = priv->rxd_ops->rxd_size; |
| rxd = rxq->rxd + (i * priv->rxd_ops->rxd_size); |
| |
| nexti = i + 1; |
| if (nexti == MWL8K_RX_DESCS) |
| nexti = 0; |
| next_dma_addr = rxq->rxd_dma + (nexti * desc_size); |
| |
| priv->rxd_ops->rxd_init(rxd, next_dma_addr); |
| } |
| |
| return 0; |
| } |
| |
| static int rxq_refill(struct ieee80211_hw *hw, int index, int limit) |
| { |
| struct mwl8k_priv *priv = hw->priv; |
| struct mwl8k_rx_queue *rxq = priv->rxq + index; |
| int refilled; |
| |
| refilled = 0; |
| while (rxq->rxd_count < MWL8K_RX_DESCS && limit--) { |
| struct sk_buff *skb; |
| dma_addr_t addr; |
| int rx; |
| void *rxd; |
| |
| skb = dev_alloc_skb(MWL8K_RX_MAXSZ); |
| if (skb == NULL) |
| break; |
| |
| addr = pci_map_single(priv->pdev, skb->data, |
| MWL8K_RX_MAXSZ, DMA_FROM_DEVICE); |
| |
| rxq->rxd_count++; |
| rx = rxq->tail++; |
| if (rxq->tail == MWL8K_RX_DESCS) |
| rxq->tail = 0; |
| rxq->buf[rx].skb = skb; |
| dma_unmap_addr_set(&rxq->buf[rx], dma, addr); |
| |
| rxd = rxq->rxd + (rx * priv->rxd_ops->rxd_size); |
| priv->rxd_ops->rxd_refill(rxd, addr, MWL8K_RX_MAXSZ); |
| |
| refilled++; |
| } |
| |
| return refilled; |
| } |
| |
| /* Must be called only when the card's reception is completely halted */ |
| static void mwl8k_rxq_deinit(struct ieee80211_hw *hw, int index) |
| { |
| struct mwl8k_priv *priv = hw->priv; |
| struct mwl8k_rx_queue *rxq = priv->rxq + index; |
| int i; |
| |
| if (rxq->rxd == NULL) |
| return; |
| |
| for (i = 0; i < MWL8K_RX_DESCS; i++) { |
| if (rxq->buf[i].skb != NULL) { |
| pci_unmap_single(priv->pdev, |
| dma_unmap_addr(&rxq->buf[i], dma), |
| MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE); |
| dma_unmap_addr_set(&rxq->buf[i], dma, 0); |
| |
| kfree_skb(rxq->buf[i].skb); |
| rxq->buf[i].skb = NULL; |
| } |
| } |
| |
| kfree(rxq->buf); |
| rxq->buf = NULL; |
| |
| pci_free_consistent(priv->pdev, |
| MWL8K_RX_DESCS * priv->rxd_ops->rxd_size, |
| rxq->rxd, rxq->rxd_dma); |
| rxq->rxd = NULL; |
| } |
| |
| |
| /* |
| * Scan a list of BSSIDs to process for finalize join. |
| * Allows for extension to process multiple BSSIDs. |
| */ |
| static inline int |
| mwl8k_capture_bssid(struct mwl8k_priv *priv, struct ieee80211_hdr *wh) |
| { |
| return priv->capture_beacon && |
| ieee80211_is_beacon(wh->frame_control) && |
| !compare_ether_addr(wh->addr3, priv->capture_bssid); |
| } |
| |
| static inline void mwl8k_save_beacon(struct ieee80211_hw *hw, |
| struct sk_buff *skb) |
| { |
| struct mwl8k_priv *priv = hw->priv; |
| |
| priv->capture_beacon = false; |
| memset(priv->capture_bssid, 0, ETH_ALEN); |
| |
| /* |
| * Use GFP_ATOMIC as rxq_process is called from |
| * the primary interrupt handler, memory allocation call |
| * must not sleep. |
| */ |
| priv->beacon_skb = skb_copy(skb, GFP_ATOMIC); |
| if (priv->beacon_skb != NULL) |
| ieee80211_queue_work(hw, &priv->finalize_join_worker); |
| } |
| |
| static inline struct mwl8k_vif *mwl8k_find_vif_bss(struct list_head *vif_list, |
| u8 *bssid) |
| { |
| struct mwl8k_vif *mwl8k_vif; |
| |
| list_for_each_entry(mwl8k_vif, |
| vif_list, list) { |
| if (memcmp(bssid, mwl8k_vif->bssid, |
| ETH_ALEN) == 0) |
| return mwl8k_vif; |
| } |
| |
| return NULL; |
| } |
| |
| static int rxq_process(struct ieee80211_hw *hw, int index, int limit) |
| { |
| struct mwl8k_priv *priv = hw->priv; |
| struct mwl8k_vif *mwl8k_vif = NULL; |
| struct mwl8k_rx_queue *rxq = priv->rxq + index; |
| int processed; |
| |
| processed = 0; |
| while (rxq->rxd_count && limit--) { |
| struct sk_buff *skb; |
| void *rxd; |
| int pkt_len; |
| struct ieee80211_rx_status status; |
| struct ieee80211_hdr *wh; |
| __le16 qos; |
| |
| skb = rxq->buf[rxq->head].skb; |
| if (skb == NULL) |
| break; |
| |
| rxd = rxq->rxd + (rxq->head * priv->rxd_ops->rxd_size); |
| |
| pkt_len = priv->rxd_ops->rxd_process(rxd, &status, &qos, |
| &priv->noise); |
| if (pkt_len < 0) |
| break; |
| |
| rxq->buf[rxq->head].skb = NULL; |
| |
| pci_unmap_single(priv->pdev, |
| dma_unmap_addr(&rxq->buf[rxq->head], dma), |
| MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE); |
| dma_unmap_addr_set(&rxq->buf[rxq->head], dma, 0); |
| |
| rxq->head++; |
| if (rxq->head == MWL8K_RX_DESCS) |
| rxq->head = 0; |
| |
| rxq->rxd_count--; |
| |
| wh = &((struct mwl8k_dma_data *)skb->data)->wh; |
| |
| /* |
| * Check for a pending join operation. Save a |
| * copy of the beacon and schedule a tasklet to |
| * send a FINALIZE_JOIN command to the firmware. |
| */ |
| if (mwl8k_capture_bssid(priv, (void *)skb->data)) |
| mwl8k_save_beacon(hw, skb); |
| |
| if (ieee80211_has_protected(wh->frame_control)) { |
| |
| /* Check if hw crypto has been enabled for |
| * this bss. If yes, set the status flags |
| * accordingly |
| */ |
| mwl8k_vif = mwl8k_find_vif_bss(&priv->vif_list, |
| wh->addr1); |
| |
| if (mwl8k_vif != NULL && |
| mwl8k_vif->is_hw_crypto_enabled == true) { |
| /* |
| * When MMIC ERROR is encountered |
| * by the firmware, payload is |
| * dropped and only 32 bytes of |
| * mwl8k Firmware header is sent |
| * to the host. |
| * |
| * We need to add four bytes of |
| * key information. In it |
| * MAC80211 expects keyidx set to |
| * 0 for triggering Counter |
| * Measure of MMIC failure. |
| */ |
| if (status.flag & RX_FLAG_MMIC_ERROR) { |
| struct mwl8k_dma_data *tr; |
| tr = (struct mwl8k_dma_data *)skb->data; |
| memset((void *)&(tr->data), 0, 4); |
| pkt_len += 4; |
| } |
| |
| if (!ieee80211_is_auth(wh->frame_control)) |
| status.flag |= RX_FLAG_IV_STRIPPED | |
| RX_FLAG_DECRYPTED | |
| RX_FLAG_MMIC_STRIPPED; |
| } |
| } |
| |
| skb_put(skb, pkt_len); |
| mwl8k_remove_dma_header(skb, qos); |
| memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status)); |
| ieee80211_rx_irqsafe(hw, skb); |
| |
| processed++; |
| } |
| |
| return processed; |
| } |
| |
| |
| /* |
| * Packet transmission. |
| */ |
| |
| #define MWL8K_TXD_STATUS_OK 0x00000001 |
| #define MWL8K_TXD_STATUS_OK_RETRY 0x00000002 |
| #define MWL8K_TXD_STATUS_OK_MORE_RETRY 0x00000004 |
| #define MWL8K_TXD_STATUS_MULTICAST_TX 0x00000008 |
| #define MWL8K_TXD_STATUS_FW_OWNED 0x80000000 |
| |
| #define MWL8K_QOS_QLEN_UNSPEC 0xff00 |
| #define MWL8K_QOS_ACK_POLICY_MASK 0x0060 |
| #define MWL8K_QOS_ACK_POLICY_NORMAL 0x0000 |
| #define MWL8K_QOS_ACK_POLICY_BLOCKACK 0x0060 |
| #define MWL8K_QOS_EOSP 0x0010 |
| |
| struct mwl8k_tx_desc { |
| __le32 status; |
| __u8 data_rate; |
| __u8 tx_priority; |
| __le16 qos_control; |
| __le32 pkt_phys_addr; |
| __le16 pkt_len; |
| __u8 dest_MAC_addr[ETH_ALEN]; |
| __le32 next_txd_phys_addr; |
| __le32 timestamp; |
| __le16 rate_info; |
| __u8 peer_id; |
| __u8 tx_frag_cnt; |
| } __packed; |
| |
| #define MWL8K_TX_DESCS 128 |
| |
| static int mwl8k_txq_init(struct ieee80211_hw *hw, int index) |
| { |
| struct mwl8k_priv *priv = hw->priv; |
| struct mwl8k_tx_queue *txq = priv->txq + index; |
| int size; |
| int i; |
| |
| txq->len = 0; |
| txq->head = 0; |
| txq->tail = 0; |
| |
| size = MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc); |
| |
| txq->txd = pci_alloc_consistent(priv->pdev, size, &txq->txd_dma); |
| if (txq->txd == NULL) { |
| wiphy_err(hw->wiphy, "failed to alloc TX descriptors\n"); |
| return -ENOMEM; |
| } |
| memset(txq->txd, 0, size); |
| |
| txq->skb = kcalloc(MWL8K_TX_DESCS, sizeof(*txq->skb), GFP_KERNEL); |
| if (txq->skb == NULL) { |
| wiphy_err(hw->wiphy, "failed to alloc TX skbuff list\n"); |
| pci_free_consistent(priv->pdev, size, txq->txd, txq->txd_dma); |
| return -ENOMEM; |
| } |
| |
| for (i = 0; i < MWL8K_TX_DESCS; i++) { |
| struct mwl8k_tx_desc *tx_desc; |
| int nexti; |
| |
| tx_desc = txq->txd + i; |
| nexti = (i + 1) % MWL8K_TX_DESCS; |
| |
| tx_desc->status = 0; |
| tx_desc->next_txd_phys_addr = |
| cpu_to_le32(txq->txd_dma + nexti * sizeof(*tx_desc)); |
| } |
| |
| return 0; |
| } |
| |
| static inline void mwl8k_tx_start(struct mwl8k_priv *priv) |
| { |
| iowrite32(MWL8K_H2A_INT_PPA_READY, |
| priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); |
| iowrite32(MWL8K_H2A_INT_DUMMY, |
| priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); |
| ioread32(priv->regs + MWL8K_HIU_INT_CODE); |
| } |
| |
| static void mwl8k_dump_tx_rings(struct ieee80211_hw *hw) |
| { |
| struct mwl8k_priv *priv = hw->priv; |
| int i; |
| |
| for (i = 0; i < mwl8k_tx_queues(priv); i++) { |
| struct mwl8k_tx_queue *txq = priv->txq + i; |
| int fw_owned = 0; |
| int drv_owned = 0; |
| int unused = 0; |
| int desc; |
| |
| for (desc = 0; desc < MWL8K_TX_DESCS; desc++) { |
| struct mwl8k_tx_desc *tx_desc = txq->txd + desc; |
| u32 status; |
| |
| status = le32_to_cpu(tx_desc->status); |
| if (status & MWL8K_TXD_STATUS_FW_OWNED) |
| fw_owned++; |
| else |
| drv_owned++; |
| |
| if (tx_desc->pkt_len == 0) |
| unused++; |
| } |
| |
| wiphy_err(hw->wiphy, |
| "txq[%d] len=%d head=%d tail=%d " |
| "fw_owned=%d drv_owned=%d unused=%d\n", |
| i, |
| txq->len, txq->head, txq->tail, |
| fw_owned, drv_owned, unused); |
| } |
| } |
| |
| /* |
| * Must be called with priv->fw_mutex held and tx queues stopped. |
| */ |
| #define MWL8K_TX_WAIT_TIMEOUT_MS 5000 |
| |
| static int mwl8k_tx_wait_empty(struct ieee80211_hw *hw) |
| { |
| struct mwl8k_priv *priv = hw->priv; |
| DECLARE_COMPLETION_ONSTACK(tx_wait); |
| int retry; |
| int rc; |
| |
| might_sleep(); |
| |
| /* |
| * The TX queues are stopped at this point, so this test |
| * doesn't need to take ->tx_lock. |
| */ |
| if (!priv->pending_tx_pkts) |
| return 0; |
| |
| retry = 0; |
| rc = 0; |
| |
| spin_lock_bh(&priv->tx_lock); |
| priv->tx_wait = &tx_wait; |
| while (!rc) { |
| int oldcount; |
| unsigned long timeout; |
| |
| oldcount = priv->pending_tx_pkts; |
| |
| spin_unlock_bh(&priv->tx_lock); |
| timeout = wait_for_completion_timeout(&tx_wait, |
| msecs_to_jiffies(MWL8K_TX_WAIT_TIMEOUT_MS)); |
| spin_lock_bh(&priv->tx_lock); |
| |
| if (timeout) { |
| WARN_ON(priv->pending_tx_pkts); |
| if (retry) |
| wiphy_notice(hw->wiphy, "tx rings drained\n"); |
| break; |
| } |
| |
| if (priv->pending_tx_pkts < oldcount) { |
| wiphy_notice(hw->wiphy, |
| "waiting for tx rings to drain (%d -> %d pkts)\n", |
| oldcount, priv->pending_tx_pkts); |
| retry = 1; |
| continue; |
| } |
| |
| priv->tx_wait = NULL; |
| |
| wiphy_err(hw->wiphy, "tx rings stuck for %d ms\n", |
| MWL8K_TX_WAIT_TIMEOUT_MS); |
| mwl8k_dump_tx_rings(hw); |
| |
| rc = -ETIMEDOUT; |
| } |
| spin_unlock_bh(&priv->tx_lock); |
| |
| return rc; |
| } |
| |
| #define MWL8K_TXD_SUCCESS(status) \ |
| ((status) & (MWL8K_TXD_STATUS_OK | \ |
| MWL8K_TXD_STATUS_OK_RETRY | \ |
| MWL8K_TXD_STATUS_OK_MORE_RETRY)) |
| |
| static int mwl8k_tid_queue_mapping(u8 tid) |
| { |
| BUG_ON(tid > 7); |
| |
| switch (tid) { |
| case 0: |
| case 3: |
| return IEEE80211_AC_BE; |
| break; |
| case 1: |
| case 2: |
| return IEEE80211_AC_BK; |
| break; |
| case 4: |
| case 5: |
| return IEEE80211_AC_VI; |
| break; |
| case 6: |
| case 7: |
| return IEEE80211_AC_VO; |
| break; |
| default: |
| return -1; |
| break; |
| } |
| } |
| |
| /* The firmware will fill in the rate information |
| * for each packet that gets queued in the hardware |
| * in this structure |
| */ |
| |
| struct rateinfo { |
| __le16 format:1; |
| __le16 short_gi:1; |
| __le16 band_width:1; |
| __le16 rate_id_mcs:6; |
| __le16 adv_coding:2; |
| __le16 antenna:2; |
| __le16 act_sub_chan:2; |
| __le16 preamble_type:1; |
| __le16 power_id:4; |
| __le16 antenna2:1; |
| __le16 reserved:1; |
| __le16 tx_bf_frame:1; |
| __le16 green_field:1; |
| } __packed; |
| |
| static int |
| mwl8k_txq_reclaim(struct ieee80211_hw *hw, int index, int limit, int force) |
| { |
| struct mwl8k_priv *priv = hw->priv; |
| struct mwl8k_tx_queue *txq = priv->txq + index; |
| int processed; |
| |
| processed = 0; |
| while (txq->len > 0 && limit--) { |
| int tx; |
| struct mwl8k_tx_desc *tx_desc; |
| unsigned long addr; |
| int size; |
| struct sk_buff *skb; |
| struct ieee80211_tx_info *info; |
| u32 status; |
| struct ieee80211_sta *sta; |
| struct mwl8k_sta *sta_info = NULL; |
| u16 rate_info; |
| struct rateinfo *rate; |
| struct ieee80211_hdr *wh; |
| |
| tx = txq->head; |
| tx_desc = txq->txd + tx; |
| |
| status = le32_to_cpu(tx_desc->status); |
| |
| if (status & MWL8K_TXD_STATUS_FW_OWNED) { |
| if (!force) |
| break; |
| tx_desc->status &= |
| ~cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED); |
| } |
| |
| txq->head = (tx + 1) % MWL8K_TX_DESCS; |
| BUG_ON(txq->len == 0); |
| txq->len--; |
| priv->pending_tx_pkts--; |
| |
| addr = le32_to_cpu(tx_desc->pkt_phys_addr); |
| size = le16_to_cpu(tx_desc->pkt_len); |
| skb = txq->skb[tx]; |
| txq->skb[tx] = NULL; |
| |
| BUG_ON(skb == NULL); |
| pci_unmap_single(priv->pdev, addr, size, PCI_DMA_TODEVICE); |
| |
| mwl8k_remove_dma_header(skb, tx_desc->qos_control); |
| |
| wh = (struct ieee80211_hdr *) skb->data; |
| |
| /* Mark descriptor as unused */ |
| tx_desc->pkt_phys_addr = 0; |
| tx_desc->pkt_len = 0; |
| |
| info = IEEE80211_SKB_CB(skb); |
| if (ieee80211_is_data(wh->frame_control)) { |
| sta = info->control.sta; |
| if (sta) { |
| sta_info = MWL8K_STA(sta); |
| BUG_ON(sta_info == NULL); |
| rate_info = le16_to_cpu(tx_desc->rate_info); |
| rate = (struct rateinfo *)&rate_info; |
| /* If rate is < 6.5 Mpbs for an ht station |
| * do not form an ampdu. If the station is a |
| * legacy station (format = 0), do not form an |
| * ampdu |
| */ |
| if (rate->rate_id_mcs < 1 || |
| rate->format == 0) { |
| sta_info->is_ampdu_allowed = false; |
| } else { |
| sta_info->is_ampdu_allowed = true; |
| } |
| } |
| } |
| |
| ieee80211_tx_info_clear_status(info); |
| |
| /* Rate control is happening in the firmware. |
| * Ensure no tx rate is being reported. |
| */ |
| info->status.rates[0].idx = -1; |
| info->status.rates[0].count = 1; |
| |
| if (MWL8K_TXD_SUCCESS(status)) |
| info->flags |= IEEE80211_TX_STAT_ACK; |
| |
| ieee80211_tx_status_irqsafe(hw, skb); |
| |
| processed++; |
| } |
| |
| if (index < MWL8K_TX_WMM_QUEUES && processed && priv->radio_on && |
| !mutex_is_locked(&priv->fw_mutex)) |
| ieee80211_wake_queue(hw, index); |
| |
| return processed; |
| } |
| |
| /* must be called only when the card's transmit is completely halted */ |
| static void mwl8k_txq_deinit(struct ieee80211_hw *hw, int index) |
| { |
| struct mwl8k_priv *priv = hw->priv; |
| struct mwl8k_tx_queue *txq = priv->txq + index; |
| |
| if (txq->txd == NULL) |
| return; |
| |
| mwl8k_txq_reclaim(hw, index, INT_MAX, 1); |
| |
| kfree(txq->skb); |
| txq->skb = NULL; |
| |
| pci_free_consistent(priv->pdev, |
| MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc), |
| txq->txd, txq->txd_dma); |
| txq->txd = NULL; |
| } |
| |
| /* caller must hold priv->stream_lock when calling the stream functions */ |
| static struct mwl8k_ampdu_stream * |
| mwl8k_add_stream(struct ieee80211_hw *hw, struct ieee80211_sta *sta, u8 tid) |
| { |
| struct mwl8k_ampdu_stream *stream; |
| struct mwl8k_priv *priv = hw->priv; |
| int i; |
| |
| for (i = 0; i < priv->num_ampdu_queues; i++) { |
| stream = &priv->ampdu[i]; |
| if (stream->state == AMPDU_NO_STREAM) { |
| stream->sta = sta; |
| stream->state = AMPDU_STREAM_NEW; |
| stream->tid = tid; |
| stream->idx = i; |
| stream->txq_idx = MWL8K_TX_WMM_QUEUES + i; |
| wiphy_debug(hw->wiphy, "Added a new stream for %pM %d", |
| sta->addr, tid); |
| return stream; |
| } |
| } |
| return NULL; |
| } |
| |
| static int |
| mwl8k_start_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream) |
| { |
| int ret; |
| |
| /* if the stream has already been started, don't start it again */ |
| if (stream->state != AMPDU_STREAM_NEW) |
| return 0; |
| ret = ieee80211_start_tx_ba_session(stream->sta, stream->tid, 0); |
| if (ret) |
| wiphy_debug(hw->wiphy, "Failed to start stream for %pM %d: " |
| "%d\n", stream->sta->addr, stream->tid, ret); |
| else |
| wiphy_debug(hw->wiphy, "Started stream for %pM %d\n", |
| stream->sta->addr, stream->tid); |
| return ret; |
| } |
| |
| static void |
| mwl8k_remove_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream) |
| { |
| wiphy_debug(hw->wiphy, "Remove stream for %pM %d\n", stream->sta->addr, |
| stream->tid); |
| memset(stream, 0, sizeof(*stream)); |
| } |
| |
| static struct mwl8k_ampdu_stream * |
| mwl8k_lookup_stream(struct ieee80211_hw *hw, u8 *addr, u8 tid) |
| { |
| struct mwl8k_priv *priv = hw->priv; |
| int i; |
| |
| for (i = 0 ; i < priv->num_ampdu_queues; i++) { |
| struct mwl8k_ampdu_stream *stream; |
| stream = &priv->ampdu[i]; |
| if (stream->state == AMPDU_NO_STREAM) |
| continue; |
| if (!memcmp(stream->sta->addr, addr, ETH_ALEN) && |
| stream->tid == tid) |
| return stream; |
| } |
| return NULL; |
| } |
| |
| #define MWL8K_AMPDU_PACKET_THRESHOLD 64 |
| static inline bool mwl8k_ampdu_allowed(struct ieee80211_sta *sta, u8 tid) |
| { |
| struct mwl8k_sta *sta_info = MWL8K_STA(sta); |
| struct tx_traffic_info *tx_stats; |
| |
| BUG_ON(tid >= MWL8K_MAX_TID); |
| tx_stats = &sta_info->tx_stats[tid]; |
| |
| return sta_info->is_ampdu_allowed && |
| tx_stats->pkts > MWL8K_AMPDU_PACKET_THRESHOLD; |
| } |
| |
| static inline void mwl8k_tx_count_packet(struct ieee80211_sta *sta, u8 tid) |
| { |
| struct mwl8k_sta *sta_info = MWL8K_STA(sta); |
| struct tx_traffic_info *tx_stats; |
| |
| BUG_ON(tid >= MWL8K_MAX_TID); |
| tx_stats = &sta_info->tx_stats[tid]; |
| |
| if (tx_stats->start_time == 0) |
| tx_stats->start_time = jiffies; |
| |
| /* reset the packet count after each second elapses. If the number of |
| * packets ever exceeds the ampdu_min_traffic threshold, we will allow |
| * an ampdu stream to be started. |
| */ |
| if (jiffies - tx_stats->start_time > HZ) { |
| tx_stats->pkts = 0; |
| tx_stats->start_time = 0; |
| } else |
| tx_stats->pkts++; |
| } |
| |
| static void |
| mwl8k_txq_xmit(struct ieee80211_hw *hw, int index, struct sk_buff *skb) |
| { |
| struct mwl8k_priv *priv = hw->priv; |
| struct ieee80211_tx_info *tx_info; |
| struct mwl8k_vif *mwl8k_vif; |
| struct ieee80211_sta *sta; |
| struct ieee80211_hdr *wh; |
| struct mwl8k_tx_queue *txq; |
| struct mwl8k_tx_desc *tx; |
| dma_addr_t dma; |
| u32 txstatus; |
| u8 txdatarate; |
| u16 qos; |
| int txpriority; |
| u8 tid = 0; |
| struct mwl8k_ampdu_stream *stream = NULL; |
| bool start_ba_session = false; |
| struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data; |
| |
| wh = (struct ieee80211_hdr *)skb->data; |
| if (ieee80211_is_data_qos(wh->frame_control)) |
| qos = le16_to_cpu(*((__le16 *)ieee80211_get_qos_ctl(wh))); |
| else |
| qos = 0; |
| |
| if (priv->ap_fw) |
| mwl8k_encapsulate_tx_frame(skb); |
| else |
| mwl8k_add_dma_header(skb, 0); |
| |
| wh = &((struct mwl8k_dma_data *)skb->data)->wh; |
| |
| tx_info = IEEE80211_SKB_CB(skb); |
| sta = tx_info->control.sta; |
| mwl8k_vif = MWL8K_VIF(tx_info->control.vif); |
| |
| if (tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) { |
| wh->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG); |
| wh->seq_ctrl |= cpu_to_le16(mwl8k_vif->seqno); |
| mwl8k_vif->seqno += 0x10; |
| } |
| |
| /* Setup firmware control bit fields for each frame type. */ |
| txstatus = 0; |
| txdatarate = 0; |
| if (ieee80211_is_mgmt(wh->frame_control) || |
| ieee80211_is_ctl(wh->frame_control)) { |
| txdatarate = 0; |
| qos |= MWL8K_QOS_QLEN_UNSPEC | MWL8K_QOS_EOSP; |
| } else if (ieee80211_is_data(wh->frame_control)) { |
| txdatarate = 1; |
| if (is_multicast_ether_addr(wh->addr1)) |
| txstatus |= MWL8K_TXD_STATUS_MULTICAST_TX; |
| |
| qos &= ~MWL8K_QOS_ACK_POLICY_MASK; |
| if (tx_info->flags & IEEE80211_TX_CTL_AMPDU) |
| qos |= MWL8K_QOS_ACK_POLICY_BLOCKACK; |
| else |
| qos |= MWL8K_QOS_ACK_POLICY_NORMAL; |
| } |
| |
| /* Queue ADDBA request in the respective data queue. While setting up |
| * the ampdu stream, mac80211 queues further packets for that |
| * particular ra/tid pair. However, packets piled up in the hardware |
| * for that ra/tid pair will still go out. ADDBA request and the |
| * related data packets going out from different queues asynchronously |
| * will cause a shift in the receiver window which might result in |
| * ampdu packets getting dropped at the receiver after the stream has |
| * been setup. |
| */ |
| if (unlikely(ieee80211_is_action(wh->frame_control) && |
| mgmt->u.action.category == WLAN_CATEGORY_BACK && |
| mgmt->u.action.u.addba_req.action_code == WLAN_ACTION_ADDBA_REQ && |
| priv->ap_fw)) { |
| u16 capab = le16_to_cpu(mgmt->u.action.u.addba_req.capab); |
| tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2; |
| index = mwl8k_tid_queue_mapping(tid); |
| } |
| |
| txpriority = index; |
| |
| if (ieee80211_is_data_qos(wh->frame_control) && |
| skb->protocol != cpu_to_be16(ETH_P_PAE) && |
| sta->ht_cap.ht_supported && priv->ap_fw) { |
| tid = qos & 0xf; |
| mwl8k_tx_count_packet(sta, tid); |
| spin_lock(&priv->stream_lock); |
| stream = mwl8k_lookup_stream(hw, sta->addr, tid); |
| if (stream != NULL) { |
| if (stream->state == AMPDU_STREAM_ACTIVE) { |
| txpriority = stream->txq_idx; |
| index = stream->txq_idx; |
| } else if (stream->state == AMPDU_STREAM_NEW) { |
| /* We get here if the driver sends us packets |
| * after we've initiated a stream, but before |
| * our ampdu_action routine has been called |
| * with IEEE80211_AMPDU_TX_START to get the SSN |
| * for the ADDBA request. So this packet can |
| * go out with no risk of sequence number |
| * mismatch. No special handling is required. |
| */ |
| } else { |
| /* Drop packets that would go out after the |
| * ADDBA request was sent but before the ADDBA |
| * response is received. If we don't do this, |
| * the recipient would probably receive it |
| * after the ADDBA request with SSN 0. This |
| * will cause the recipient's BA receive window |
| * to shift, which would cause the subsequent |
| * packets in the BA stream to be discarded. |
| * mac80211 queues our packets for us in this |
| * case, so this is really just a safety check. |
| */ |
| wiphy_warn(hw->wiphy, |
| "Cannot send packet while ADDBA " |
| "dialog is underway.\n"); |
| spin_unlock(&priv->stream_lock); |
| dev_kfree_skb(skb); |
| return; |
| } |
| } else { |
| /* Defer calling mwl8k_start_stream so that the current |
| * skb can go out before the ADDBA request. This |
| * prevents sequence number mismatch at the recepient |
| * as described above. |
| */ |
| if (mwl8k_ampdu_allowed(sta, tid)) { |
| stream = mwl8k_add_stream(hw, sta, tid); |
| if (stream != NULL) |
| start_ba_session = true; |
| } |
| } |
| spin_unlock(&priv->stream_lock); |
| } |
| |
| dma = pci_map_single(priv->pdev, skb->data, |
| skb->len, PCI_DMA_TODEVICE); |
| |
| if (pci_dma_mapping_error(priv->pdev, dma)) { |
| wiphy_debug(hw->wiphy, |
| "failed to dma map skb, dropping TX frame.\n"); |
| if (start_ba_session) { |
| spin_lock(&priv->stream_lock); |
| mwl8k_remove_stream(hw, stream); |
| spin_unlock(&priv->stream_lock); |
| } |
| dev_kfree_skb(skb); |
| return; |
| } |
| |
| spin_lock_bh(&priv->tx_lock); |
| |
| txq = priv->txq + index; |
| |
| if (index >= MWL8K_TX_WMM_QUEUES && txq->len >= MWL8K_TX_DESCS) { |
| /* This is the case in which the tx packet is destined for an |
| * AMPDU queue and that AMPDU queue is full. Because we don't |
| * start and stop the AMPDU queues, we must drop these packets. |
| */ |
| dev_kfree_skb(skb); |
| spin_unlock_bh(&priv->tx_lock); |
| return; |
| } |
| |
| BUG_ON(txq->skb[txq->tail] != NULL); |
| txq->skb[txq->tail] = skb; |
| |
| tx = txq->txd + txq->tail; |
| tx->data_rate = txdatarate; |
| tx->tx_priority = txpriority; |
| tx->qos_control = cpu_to_le16(qos); |
| tx->pkt_phys_addr = cpu_to_le32(dma); |
| tx->pkt_len = cpu_to_le16(skb->len); |
| tx->rate_info = 0; |
| if (!priv->ap_fw && tx_info->control.sta != NULL) |
| tx->peer_id = MWL8K_STA(tx_info->control.sta)->peer_id; |
| else |
| tx->peer_id = 0; |
| wmb(); |
| tx->status = cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED | txstatus); |
| |
| txq->len++; |
| priv->pending_tx_pkts++; |
| |
| txq->tail++; |
| if (txq->tail == MWL8K_TX_DESCS) |
| txq->tail = 0; |
| |
| if (txq->head == txq->tail && index < MWL8K_TX_WMM_QUEUES) |
| ieee80211_stop_queue(hw, index); |
| |
| mwl8k_tx_start(priv); |
| |
| spin_unlock_bh(&priv->tx_lock); |
| |
| /* Initiate the ampdu session here */ |
| if (start_ba_session) { |
| spin_lock(&priv->stream_lock); |
| if (mwl8k_start_stream(hw, stream)) |
| mwl8k_remove_stream(hw, stream); |
| spin_unlock(&priv->stream_lock); |
| } |
| } |
| |
| |
| /* |
| * Firmware access. |
| * |
| * We have the following requirements for issuing firmware commands: |
| * - Some commands require that the packet transmit path is idle when |
| * the command is issued. (For simplicity, we'll just quiesce the |
| * transmit path for every command.) |
| * - There are certain sequences of commands that need to be issued to |
| * the hardware sequentially, with no other intervening commands. |
| * |
| * This leads to an implementation of a "firmware lock" as a mutex that |
| * can be taken recursively, and which is taken by both the low-level |
| * command submission function (mwl8k_post_cmd) as well as any users of |
| * that function that require issuing of an atomic sequence of commands, |
| * and quiesces the transmit path whenever it's taken. |
| */ |
| static int mwl8k_fw_lock(struct ieee80211_hw *hw) |
| { |
| struct mwl8k_priv *priv = hw->priv; |
| |
| if (priv->fw_mutex_owner != current) { |
| int rc; |
| |
| mutex_lock(&priv->fw_mutex); |
| ieee80211_stop_queues(hw); |
| |
| rc = mwl8k_tx_wait_empty(hw); |
| if (rc) { |
| ieee80211_wake_queues(hw); |
| mutex_unlock(&priv->fw_mutex); |
| |
| return rc; |
| } |
| |
| priv->fw_mutex_owner = current; |
| } |
| |
| priv->fw_mutex_depth++; |
| |
| return 0; |
| } |
| |
| static void mwl8k_fw_unlock(struct ieee80211_hw *hw) |
| { |
| struct mwl8k_priv *priv = hw->priv; |
| |
| if (!--priv->fw_mutex_depth) { |
| ieee80211_wake_queues(hw); |
| priv->fw_mutex_owner = NULL; |
| mutex_unlock(&priv->fw_mutex); |
| } |
| } |
| |
| |
| /* |
| * Command processing. |
| */ |
| |
| /* Timeout firmware commands after 10s */ |
| #define MWL8K_CMD_TIMEOUT_MS 10000 |
| |
| static int mwl8k_post_cmd(struct ieee80211_hw *hw, struct mwl8k_cmd_pkt *cmd) |
| { |
| DECLARE_COMPLETION_ONSTACK(cmd_wait); |
| struct mwl8k_priv *priv = hw->priv; |
| void __iomem *regs = priv->regs; |
| dma_addr_t dma_addr; |
| unsigned int dma_size; |
| int rc; |
| unsigned long timeout = 0; |
| u8 buf[32]; |
| |
| cmd->result = (__force __le16) 0xffff; |
| dma_size = le16_to_cpu(cmd->length); |
| dma_addr = pci_map_single(priv->pdev, cmd, dma_size, |
| PCI_DMA_BIDIRECTIONAL); |
| if (pci_dma_mapping_error(priv->pdev, dma_addr)) |
| return -ENOMEM; |
| |
| rc = mwl8k_fw_lock(hw); |
| if (rc) { |
| pci_unmap_single(priv->pdev, dma_addr, dma_size, |
| PCI_DMA_BIDIRECTIONAL); |
| return rc; |
| } |
| |
| priv->hostcmd_wait = &cmd_wait; |
| iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR); |
| iowrite32(MWL8K_H2A_INT_DOORBELL, |
| regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); |
| iowrite32(MWL8K_H2A_INT_DUMMY, |
| regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); |
| |
| timeout = wait_for_completion_timeout(&cmd_wait, |
| msecs_to_jiffies(MWL8K_CMD_TIMEOUT_MS)); |
| |
| priv->hostcmd_wait = NULL; |
| |
| mwl8k_fw_unlock(hw); |
| |
| pci_unmap_single(priv->pdev, dma_addr, dma_size, |
| PCI_DMA_BIDIRECTIONAL); |
| |
| if (!timeout) { |
| wiphy_err(hw->wiphy, "Command %s timeout after %u ms\n", |
| mwl8k_cmd_name(cmd->code, buf, sizeof(buf)), |
| MWL8K_CMD_TIMEOUT_MS); |
| rc = -ETIMEDOUT; |
| } else { |
| int ms; |
| |
| ms = MWL8K_CMD_TIMEOUT_MS - jiffies_to_msecs(timeout); |
| |
| rc = cmd->result ? -EINVAL : 0; |
| if (rc) |
| wiphy_err(hw->wiphy, "Command %s error 0x%x\n", |
| mwl8k_cmd_name(cmd->code, buf, sizeof(buf)), |
| le16_to_cpu(cmd->result)); |
| else if (ms > 2000) |
| wiphy_notice(hw->wiphy, "Command %s took %d ms\n", |
| mwl8k_cmd_name(cmd->code, |
| buf, sizeof(buf)), |
| ms); |
| } |
| |
| return rc; |
| } |
| |
| static int mwl8k_post_pervif_cmd(struct ieee80211_hw *hw, |
| struct ieee80211_vif *vif, |
| struct mwl8k_cmd_pkt *cmd) |
| { |
| if (vif != NULL) |
| cmd->macid = MWL8K_VIF(vif)->macid; |
| return mwl8k_post_cmd(hw, cmd); |
| } |
| |
| /* |
| * Setup code shared between STA and AP firmware images. |
| */ |
| static void mwl8k_setup_2ghz_band(struct ieee80211_hw *hw) |
| { |
| struct mwl8k_priv *priv = hw->priv; |
| |
| BUILD_BUG_ON(sizeof(priv->channels_24) != sizeof(mwl8k_channels_24)); |
| memcpy(priv->channels_24, mwl8k_channels_24, sizeof(mwl8k_channels_24)); |
| |
| BUILD_BUG_ON(sizeof(priv->rates_24) != sizeof(mwl8k_rates_24)); |
| memcpy(priv->rates_24, mwl8k_rates_24, sizeof(mwl8k_rates_24)); |
| |
| priv->band_24.band = IEEE80211_BAND_2GHZ; |
| priv->band_24.channels = priv->channels_24; |
| priv->band_24.n_channels = ARRAY_SIZE(mwl8k_channels_24); |
| priv->band_24.bitrates = priv->rates_24; |
| priv->band_24.n_bitrates = ARRAY_SIZE(mwl8k_rates_24); |
| |
| hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band_24; |
| } |
| |
| static void mwl8k_setup_5ghz_band(struct ieee80211_hw *hw) |
| { |
| struct mwl8k_priv *priv = hw->priv; |
| |
| BUILD_BUG_ON(sizeof(priv->channels_50) != sizeof(mwl8k_channels_50)); |
| memcpy(priv->channels_50, mwl8k_channels_50, sizeof(mwl8k_channels_50)); |
| |
| BUILD_BUG_ON(sizeof(priv->rates_50) != sizeof(mwl8k_rates_50)); |
| memcpy(priv->rates_50, mwl8k_rates_50, sizeof(mwl8k_rates_50)); |
| |
| priv->band_50.band = IEEE80211_BAND_5GHZ; |
| priv->band_50.channels = priv->channels_50; |
| priv->band_50.n_channels = ARRAY_SIZE(mwl8k_channels_50); |
| priv->band_50.bitrates = priv->rates_50; |
| priv->band_50.n_bitrates = ARRAY_SIZE(mwl8k_rates_50); |
| |
| hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &priv->band_50; |
| } |
| |
| /* |
| * CMD_GET_HW_SPEC (STA version). |
| */ |
| struct mwl8k_cmd_get_hw_spec_sta { |
| struct mwl8k_cmd_pkt header; |
| __u8 hw_rev; |
| __u8 host_interface; |
| __le16 num_mcaddrs; |
| __u8 perm_addr[ETH_ALEN]; |
| __le16 region_code; |
| __le32 fw_rev; |
| __le32 ps_cookie; |
| __le32 caps; |
| __u8 mcs_bitmap[16]; |
| __le32 rx_queue_ptr; |
| __le32 num_tx_queues; |
| __le32 tx_queue_ptrs[MWL8K_TX_WMM_QUEUES]; |
| __le32 caps2; |
| __le32 num_tx_desc_per_queue; |
| __le32 total_rxd; |
| } __packed; |
| |
| #define MWL8K_CAP_MAX_AMSDU 0x20000000 |
| #define MWL8K_CAP_GREENFIELD 0x08000000 |
| #define MWL8K_CAP_AMPDU 0x04000000 |
| #define MWL8K_CAP_RX_STBC 0x01000000 |
| #define MWL8K_CAP_TX_STBC 0x00800000 |
| #define MWL8K_CAP_SHORTGI_40MHZ 0x00400000 |
| #define MWL8K_CAP_SHORTGI_20MHZ 0x00200000 |
| #define MWL8K_CAP_RX_ANTENNA_MASK 0x000e0000 |
| #define MWL8K_CAP_TX_ANTENNA_MASK 0x0001c000 |
| #define MWL8K_CAP_DELAY_BA 0x00003000 |
| #define MWL8K_CAP_MIMO 0x00000200 |
| #define MWL8K_CAP_40MHZ 0x00000100 |
| #define MWL8K_CAP_BAND_MASK 0x00000007 |
| #define MWL8K_CAP_5GHZ 0x00000004 |
| #define MWL8K_CAP_2GHZ4 0x00000001 |
| |
| static void |
| mwl8k_set_ht_caps(struct ieee80211_hw *hw, |
| struct ieee80211_supported_band *band, u32 cap) |
| { |
| int rx_streams; |
| int tx_streams; |
| |
| band->ht_cap.ht_supported = 1; |
| |
| if (cap & MWL8K_CAP_MAX_AMSDU) |
| band->ht_cap.cap |= IEEE80211_HT_CAP_MAX_AMSDU; |
| if (cap & MWL8K_CAP_GREENFIELD) |
| band->ht_cap.cap |= IEEE80211_HT_CAP_GRN_FLD; |
| if (cap & MWL8K_CAP_AMPDU) { |
| hw->flags |= IEEE80211_HW_AMPDU_AGGREGATION; |
| band->ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K; |
| band->ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE; |
| } |
| if (cap & MWL8K_CAP_RX_STBC) |
| band->ht_cap.cap |= IEEE80211_HT_CAP_RX_STBC; |
| if (cap & MWL8K_CAP_TX_STBC) |
| band->ht_cap.cap |= IEEE80211_HT_CAP_TX_STBC; |
| if (cap & MWL8K_CAP_SHORTGI_40MHZ) |
| band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_40; |
| if (cap & MWL8K_CAP_SHORTGI_20MHZ) |
| band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_20; |
| if (cap & MWL8K_CAP_DELAY_BA) |
| band->ht_cap.cap |= IEEE80211_HT_CAP_DELAY_BA; |
| if (cap & MWL8K_CAP_40MHZ) |
| band->ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40; |
| |
| rx_streams = hweight32(cap & MWL8K_CAP_RX_ANTENNA_MASK); |
| tx_streams = hweight32(cap & MWL8K_CAP_TX_ANTENNA_MASK); |
| |
| band->ht_cap.mcs.rx_mask[0] = 0xff; |
| if (rx_streams >= 2) |
| band->ht_cap.mcs.rx_mask[1] = 0xff; |
| if (rx_streams >= 3) |
| band->ht_cap.mcs.rx_mask[2] = 0xff; |
| band->ht_cap.mcs.rx_mask[4] = 0x01; |
| band->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED; |
| |
| if (rx_streams != tx_streams) { |
| band->ht_cap.mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF; |
| band->ht_cap.mcs.tx_params |= (tx_streams - 1) << |
| IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT; |
| } |
| } |
| |
| static void |
| mwl8k_set_caps(struct ieee80211_hw *hw, u32 caps) |
| { |
| struct mwl8k_priv *priv = hw->priv; |
| |
| if ((caps & MWL8K_CAP_2GHZ4) || !(caps & MWL8K_CAP_BAND_MASK)) { |
| mwl8k_setup_2ghz_band(hw); |
| if (caps & MWL8K_CAP_MIMO) |
| mwl8k_set_ht_caps(hw, &priv->band_24, caps); |
| } |
| |
| if (caps & MWL8K_CAP_5GHZ) { |
| mwl8k_setup_5ghz_band(hw); |
| if (caps & MWL8K_CAP_MIMO) |
| mwl8k_set_ht_caps(hw, &priv->band_50, caps); |
| } |
| } |
| |
| static int mwl8k_cmd_get_hw_spec_sta(struct ieee80211_hw *hw) |
| { |
| struct mwl8k_priv *priv = hw->priv; |
| struct mwl8k_cmd_get_hw_spec_sta *cmd; |
| int rc; |
| int i; |
| |
| cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
| if (cmd == NULL) |
| return -ENOMEM; |
| |
| cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC); |
| cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
| |
| memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr)); |
| cmd->ps_cookie = cpu_to_le32(priv->cookie_dma); |
| cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma); |
| cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv)); |
| for (i = 0; i < mwl8k_tx_queues(priv); i++) |
| cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[i].txd_dma); |
| cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS); |
| cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS); |
| |
| rc = mwl8k_post_cmd(hw, &cmd->header); |
| |
| if (!rc) { |
| SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr); |
| priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs); |
| priv->fw_rev = le32_to_cpu(cmd->fw_rev); |
| priv->hw_rev = cmd->hw_rev; |
| mwl8k_set_caps(hw, le32_to_cpu(cmd->caps)); |
| priv->ap_macids_supported = 0x00000000; |
| priv->sta_macids_supported = 0x00000001; |
| } |
| |
| kfree(cmd); |
| return rc; |
| } |
| |
| /* |
| * CMD_GET_HW_SPEC (AP version). |
| */ |
| struct mwl8k_cmd_get_hw_spec_ap { |
| struct mwl8k_cmd_pkt header; |
| __u8 hw_rev; |
| __u8 host_interface; |
| __le16 num_wcb; |
| __le16 num_mcaddrs; |
| __u8 perm_addr[ETH_ALEN]; |
| __le16 region_code; |
| __le16 num_antenna; |
| __le32 fw_rev; |
| __le32 wcbbase0; |
| __le32 rxwrptr; |
| __le32 rxrdptr; |
| __le32 ps_cookie; |
| __le32 wcbbase1; |
| __le32 wcbbase2; |
| __le32 wcbbase3; |
| __le32 fw_api_version; |
| __le32 caps; |
| __le32 num_of_ampdu_queues; |
| __le32 wcbbase_ampdu[MWL8K_MAX_AMPDU_QUEUES]; |
| } __packed; |
| |
| static int mwl8k_cmd_get_hw_spec_ap(struct ieee80211_hw *hw) |
| { |
| struct mwl8k_priv *priv = hw->priv; |
| struct mwl8k_cmd_get_hw_spec_ap *cmd; |
| int rc, i; |
| u32 api_version; |
| |
| cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
| if (cmd == NULL) |
| return -ENOMEM; |
| |
| cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC); |
| cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
| |
| memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr)); |
| cmd->ps_cookie = cpu_to_le32(priv->cookie_dma); |
| |
| rc = mwl8k_post_cmd(hw, &cmd->header); |
| |
| if (!rc) { |
| int off; |
| |
| api_version = le32_to_cpu(cmd->fw_api_version); |
| if (priv->device_info->fw_api_ap != api_version) { |
| printk(KERN_ERR "%s: Unsupported fw API version for %s." |
| " Expected %d got %d.\n", MWL8K_NAME, |
| priv->device_info->part_name, |
| priv->device_info->fw_api_ap, |
| api_version); |
| rc = -EINVAL; |
| goto done; |
| } |
| SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr); |
| priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs); |
| priv->fw_rev = le32_to_cpu(cmd->fw_rev); |
| priv->hw_rev = cmd->hw_rev; |
| mwl8k_set_caps(hw, le32_to_cpu(cmd->caps)); |
| priv->ap_macids_supported = 0x000000ff; |
| priv->sta_macids_supported = 0x00000000; |
| priv->num_ampdu_queues = le32_to_cpu(cmd->num_of_ampdu_queues); |
| if (priv->num_ampdu_queues > MWL8K_MAX_AMPDU_QUEUES) { |
| wiphy_warn(hw->wiphy, "fw reported %d ampdu queues" |
| " but we only support %d.\n", |
| priv->num_ampdu_queues, |
| MWL8K_MAX_AMPDU_QUEUES); |
| priv->num_ampdu_queues = MWL8K_MAX_AMPDU_QUEUES; |
| } |
| off = le32_to_cpu(cmd->rxwrptr) & 0xffff; |
| iowrite32(priv->rxq[0].rxd_dma, priv->sram + off); |
| |
| off = le32_to_cpu(cmd->rxrdptr) & 0xffff; |
| iowrite32(priv->rxq[0].rxd_dma, priv->sram + off); |
| |
| priv->txq_offset[0] = le32_to_cpu(cmd->wcbbase0) & 0xffff; |
| priv->txq_offset[1] = le32_to_cpu(cmd->wcbbase1) & 0xffff; |
| priv->txq_offset[2] = le32_to_cpu(cmd->wcbbase2) & 0xffff; |
| priv->txq_offset[3] = le32_to_cpu(cmd->wcbbase3) & 0xffff; |
| |
| for (i = 0; i < priv->num_ampdu_queues; i++) |
| priv->txq_offset[i + MWL8K_TX_WMM_QUEUES] = |
| le32_to_cpu(cmd->wcbbase_ampdu[i]) & 0xffff; |
| } |
| |
| done: |
| kfree(cmd); |
| return rc; |
| } |
| |
| /* |
| * CMD_SET_HW_SPEC. |
| */ |
| struct mwl8k_cmd_set_hw_spec { |
| struct mwl8k_cmd_pkt header; |
| __u8 hw_rev; |
| __u8 host_interface; |
| __le16 num_mcaddrs; |
| __u8 perm_addr[ETH_ALEN]; |
| __le16 region_code; |
| __le32 fw_rev; |
| __le32 ps_cookie; |
| __le32 caps; |
| __le32 rx_queue_ptr; |
| __le32 num_tx_queues; |
| __le32 tx_queue_ptrs[MWL8K_MAX_TX_QUEUES]; |
| __le32 flags; |
| __le32 num_tx_desc_per_queue; |
| __le32 total_rxd; |
| } __packed; |
| |
| /* If enabled, MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY will cause |
| * packets to expire 500 ms after the timestamp in the tx descriptor. That is, |
| * the packets that are queued for more than 500ms, will be dropped in the |
| * hardware. This helps minimizing the issues caused due to head-of-line |
| * blocking where a slow client can hog the bandwidth and affect traffic to a |
| * faster client. |
| */ |
| #define MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY 0x00000400 |
| #define MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT 0x00000080 |
| #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP 0x00000020 |
| #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON 0x00000010 |
| |
| static int mwl8k_cmd_set_hw_spec(struct ieee80211_hw *hw) |
| { |
| struct mwl8k_priv *priv = hw->priv; |
| struct mwl8k_cmd_set_hw_spec *cmd; |
| int rc; |
| int i; |
| |
| cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
| if (cmd == NULL) |
| return -ENOMEM; |
| |
| cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_HW_SPEC); |
| cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
| |
| cmd->ps_cookie = cpu_to_le32(priv->cookie_dma); |
| cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma); |
| cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv)); |
| |
| /* |
| * Mac80211 stack has Q0 as highest priority and Q3 as lowest in |
| * that order. Firmware has Q3 as highest priority and Q0 as lowest |
| * in that order. Map Q3 of mac80211 to Q0 of firmware so that the |
| * priority is interpreted the right way in firmware. |
| */ |
| for (i = 0; i < mwl8k_tx_queues(priv); i++) { |
| int j = mwl8k_tx_queues(priv) - 1 - i; |
| cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[j].txd_dma); |
| } |
| |
| cmd->flags = cpu_to_le32(MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT | |
| MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP | |
| MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON); |
| cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS); |
| cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS); |
| |
| rc = mwl8k_post_cmd(hw, &cmd->header); |
| kfree(cmd); |
| |
| return rc; |
| } |
| |
| /* |
| * CMD_MAC_MULTICAST_ADR. |
| */ |
| struct mwl8k_cmd_mac_multicast_adr { |
| struct mwl8k_cmd_pkt header; |
| __le16 action; |
| __le16 numaddr; |
| __u8 addr[0][ETH_ALEN]; |
| }; |
| |
| #define MWL8K_ENABLE_RX_DIRECTED 0x0001 |
| #define MWL8K_ENABLE_RX_MULTICAST 0x0002 |
| #define MWL8K_ENABLE_RX_ALL_MULTICAST 0x0004 |
| #define MWL8K_ENABLE_RX_BROADCAST 0x0008 |
| |
| static struct mwl8k_cmd_pkt * |
| __mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw *hw, int allmulti, |
| struct netdev_hw_addr_list *mc_list) |
| { |
| struct mwl8k_priv *priv = hw->priv; |
| struct mwl8k_cmd_mac_multicast_adr *cmd; |
| int size; |
| int mc_count = 0; |
| |
| if (mc_list) |
| mc_count = netdev_hw_addr_list_count(mc_list); |
| |
| if (allmulti || mc_count > priv->num_mcaddrs) { |
| allmulti = 1; |
| mc_count = 0; |
| } |
| |
| size = sizeof(*cmd) + mc_count * ETH_ALEN; |
| |
| cmd = kzalloc(size, GFP_ATOMIC); |
| if (cmd == NULL) |
| return NULL; |
| |
| cmd->header.code = cpu_to_le16(MWL8K_CMD_MAC_MULTICAST_ADR); |
| cmd->header.length = cpu_to_le16(size); |
| cmd->action = cpu_to_le16(MWL8K_ENABLE_RX_DIRECTED | |
| MWL8K_ENABLE_RX_BROADCAST); |
| |
| if (allmulti) { |
| cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_ALL_MULTICAST); |
| } else if (mc_count) { |
| struct netdev_hw_addr *ha; |
| int i = 0; |
| |
| cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_MULTICAST); |
| cmd->numaddr = cpu_to_le16(mc_count); |
| netdev_hw_addr_list_for_each(ha, mc_list) { |
| memcpy(cmd->addr[i], ha->addr, ETH_ALEN); |
| } |
| } |
| |
| return &cmd->header; |
| } |
| |
| /* |
| * CMD_GET_STAT. |
| */ |
| struct mwl8k_cmd_get_stat { |
| struct mwl8k_cmd_pkt header; |
| __le32 stats[64]; |
| } __packed; |
| |
| #define MWL8K_STAT_ACK_FAILURE 9 |
| #define MWL8K_STAT_RTS_FAILURE 12 |
| #define MWL8K_STAT_FCS_ERROR 24 |
| #define MWL8K_STAT_RTS_SUCCESS 11 |
| |
| static int mwl8k_cmd_get_stat(struct ieee80211_hw *hw, |
| struct ieee80211_low_level_stats *stats) |
| { |
| struct mwl8k_cmd_get_stat *cmd; |
| int rc; |
| |
| cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
| if (cmd == NULL) |
| return -ENOMEM; |
| |
| cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_STAT); |
| cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
| |
| rc = mwl8k_post_cmd(hw, &cmd->header); |
| if (!rc) { |
| stats->dot11ACKFailureCount = |
| le32_to_cpu(cmd->stats[MWL8K_STAT_ACK_FAILURE]); |
| stats->dot11RTSFailureCount = |
| le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_FAILURE]); |
| stats->dot11FCSErrorCount = |
| le32_to_cpu(cmd->stats[MWL8K_STAT_FCS_ERROR]); |
| stats->dot11RTSSuccessCount = |
| le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_SUCCESS]); |
| } |
| kfree(cmd); |
| |
| return rc; |
| } |
| |
| /* |
| * CMD_RADIO_CONTROL. |
| */ |
| struct mwl8k_cmd_radio_control { |
| struct mwl8k_cmd_pkt header; |
| __le16 action; |
| __le16 control; |
| __le16 radio_on; |
| } __packed; |
| |
| static int |
| mwl8k_cmd_radio_control(struct ieee80211_hw *hw, bool enable, bool force) |
| { |
| struct mwl8k_priv *priv = hw->priv; |
| struct mwl8k_cmd_radio_control *cmd; |
| int rc; |
| |
| if (enable == priv->radio_on && !force) |
| return 0; |
| |
| cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
| if (cmd == NULL) |
| return -ENOMEM; |
| |
| cmd->header.code = cpu_to_le16(MWL8K_CMD_RADIO_CONTROL); |
| cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
| cmd->action = cpu_to_le16(MWL8K_CMD_SET); |
| cmd->control = cpu_to_le16(priv->radio_short_preamble ? 3 : 1); |
| cmd->radio_on = cpu_to_le16(enable ? 0x0001 : 0x0000); |
| |
| rc = mwl8k_post_cmd(hw, &cmd->header); |
| kfree(cmd); |
| |
| if (!rc) |
| priv->radio_on = enable; |
| |
| return rc; |
| } |
| |
| static int mwl8k_cmd_radio_disable(struct ieee80211_hw *hw) |
| { |
| return mwl8k_cmd_radio_control(hw, 0, 0); |
| } |
| |
| static int mwl8k_cmd_radio_enable(struct ieee80211_hw *hw) |
| { |
| return mwl8k_cmd_radio_control(hw, 1, 0); |
| } |
| |
| static int |
| mwl8k_set_radio_preamble(struct ieee80211_hw *hw, bool short_preamble) |
| { |
| struct mwl8k_priv *priv = hw->priv; |
| |
| priv->radio_short_preamble = short_preamble; |
| |
| return mwl8k_cmd_radio_control(hw, 1, 1); |
| } |
| |
| /* |
| * CMD_RF_TX_POWER. |
| */ |
| #define MWL8K_RF_TX_POWER_LEVEL_TOTAL 8 |
| |
| struct mwl8k_cmd_rf_tx_power { |
| struct mwl8k_cmd_pkt header; |
| __le16 action; |
| __le16 support_level; |
| __le16 current_level; |
| __le16 reserved; |
| __le16 power_level_list[MWL8K_RF_TX_POWER_LEVEL_TOTAL]; |
| } __packed; |
| |
| static int mwl8k_cmd_rf_tx_power(struct ieee80211_hw *hw, int dBm) |
| { |
| struct mwl8k_cmd_rf_tx_power *cmd; |
| int rc; |
| |
| cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
| if (cmd == NULL) |
| return -ENOMEM; |
| |
| cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_TX_POWER); |
| cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
| cmd->action = cpu_to_le16(MWL8K_CMD_SET); |
| cmd->support_level = cpu_to_le16(dBm); |
| |
| rc = mwl8k_post_cmd(hw, &cmd->header); |
| kfree(cmd); |
| |
| return rc; |
| } |
| |
| /* |
| * CMD_TX_POWER. |
| */ |
| #define MWL8K_TX_POWER_LEVEL_TOTAL 12 |
| |
| struct mwl8k_cmd_tx_power { |
| struct mwl8k_cmd_pkt header; |
| __le16 action; |
| __le16 band; |
| __le16 channel; |
| __le16 bw; |
| __le16 sub_ch; |
| __le16 power_level_list[MWL8K_TX_POWER_LEVEL_TOTAL]; |
| } __packed; |
| |
| static int mwl8k_cmd_tx_power(struct ieee80211_hw *hw, |
| struct ieee80211_conf *conf, |
| unsigned short pwr) |
| { |
| struct ieee80211_channel *channel = conf->channel; |
| struct mwl8k_cmd_tx_power *cmd; |
| int rc; |
| int i; |
| |
| cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
| if (cmd == NULL) |
| return -ENOMEM; |
| |
| cmd->header.code = cpu_to_le16(MWL8K_CMD_TX_POWER); |
| cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
| cmd->action = cpu_to_le16(MWL8K_CMD_SET_LIST); |
| |
| if (channel->band == IEEE80211_BAND_2GHZ) |
| cmd->band = cpu_to_le16(0x1); |
| else if (channel->band == IEEE80211_BAND_5GHZ) |
| cmd->band = cpu_to_le16(0x4); |
| |
| cmd->channel = channel->hw_value; |
| |
| if (conf->channel_type == NL80211_CHAN_NO_HT || |
| conf->channel_type == NL80211_CHAN_HT20) { |
| cmd->bw = cpu_to_le16(0x2); |
| } else { |
| cmd->bw = cpu_to_le16(0x4); |
| if (conf->channel_type == NL80211_CHAN_HT40MINUS) |
| cmd->sub_ch = cpu_to_le16(0x3); |
| else if (conf->channel_type == NL80211_CHAN_HT40PLUS) |
| cmd->sub_ch = cpu_to_le16(0x1); |
| } |
| |
| for (i = 0; i < MWL8K_TX_POWER_LEVEL_TOTAL; i++) |
| cmd->power_level_list[i] = cpu_to_le16(pwr); |
| |
| rc = mwl8k_post_cmd(hw, &cmd->header); |
| kfree(cmd); |
| |
| return rc; |
| } |
| |
| /* |
| * CMD_RF_ANTENNA. |
| */ |
| struct mwl8k_cmd_rf_antenna { |
| struct mwl8k_cmd_pkt header; |
| __le16 antenna; |
| __le16 mode; |
| } __packed; |
| |
| #define MWL8K_RF_ANTENNA_RX 1 |
| #define MWL8K_RF_ANTENNA_TX 2 |
| |
| static int |
| mwl8k_cmd_rf_antenna(struct ieee80211_hw *hw, int antenna, int mask) |
| { |
| struct mwl8k_cmd_rf_antenna *cmd; |
| int rc; |
| |
| cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
| if (cmd == NULL) |
| return -ENOMEM; |
| |
| cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_ANTENNA); |
| cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
| cmd->antenna = cpu_to_le16(antenna); |
| cmd->mode = cpu_to_le16(mask); |
| |
| rc = mwl8k_post_cmd(hw, &cmd->header); |
| kfree(cmd); |
| |
| return rc; |
| } |
| |
| /* |
| * CMD_SET_BEACON. |
| */ |
| struct mwl8k_cmd_set_beacon { |
| struct mwl8k_cmd_pkt header; |
| __le16 beacon_len; |
| __u8 beacon[0]; |
| }; |
| |
| static int mwl8k_cmd_set_beacon(struct ieee80211_hw *hw, |
| struct ieee80211_vif *vif, u8 *beacon, int len) |
| { |
| struct mwl8k_cmd_set_beacon *cmd; |
| int rc; |
| |
| cmd = kzalloc(sizeof(*cmd) + len, GFP_KERNEL); |
| if (cmd == NULL) |
| return -ENOMEM; |
| |
| cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_BEACON); |
| cmd->header.length = cpu_to_le16(sizeof(*cmd) + len); |
| cmd->beacon_len = cpu_to_le16(len); |
| memcpy(cmd->beacon, beacon, len); |
| |
| rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); |
| kfree(cmd); |
| |
| return rc; |
| } |
| |
| /* |
| * CMD_SET_PRE_SCAN. |
| */ |
| struct mwl8k_cmd_set_pre_scan { |
| struct mwl8k_cmd_pkt header; |
| } __packed; |
| |
| static int mwl8k_cmd_set_pre_scan(struct ieee80211_hw *hw) |
| { |
| struct mwl8k_cmd_set_pre_scan *cmd; |
| int rc; |
| |
| cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
| if (cmd == NULL) |
| return -ENOMEM; |
| |
| cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_PRE_SCAN); |
| cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
| |
| rc = mwl8k_post_cmd(hw, &cmd->header); |
| kfree(cmd); |
| |
| return rc; |
| } |
| |
| /* |
| * CMD_SET_POST_SCAN. |
| */ |
| struct mwl8k_cmd_set_post_scan { |
| struct mwl8k_cmd_pkt header; |
| __le32 isibss; |
| __u8 bssid[ETH_ALEN]; |
| } __packed; |
| |
| static int |
| mwl8k_cmd_set_post_scan(struct ieee80211_hw *hw, const __u8 *mac) |
| { |
| struct mwl8k_cmd_set_post_scan *cmd; |
| int rc; |
| |
| cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
| if (cmd == NULL) |
| return -ENOMEM; |
| |
| cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_POST_SCAN); |
| cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
| cmd->isibss = 0; |
| memcpy(cmd->bssid, mac, ETH_ALEN); |
| |
| rc = mwl8k_post_cmd(hw, &cmd->header); |
| kfree(cmd); |
| |
| return rc; |
| } |
| |
| /* |
| * CMD_SET_RF_CHANNEL. |
| */ |
| struct mwl8k_cmd_set_rf_channel { |
| struct mwl8k_cmd_pkt header; |
| __le16 action; |
| __u8 current_channel; |
| __le32 channel_flags; |
| } __packed; |
| |
| static int mwl8k_cmd_set_rf_channel(struct ieee80211_hw *hw, |
| struct ieee80211_conf *conf) |
| { |
| struct ieee80211_channel *channel = conf->channel; |
| struct mwl8k_cmd_set_rf_channel *cmd; |
| int rc; |
| |
| cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
| if (cmd == NULL) |
| return -ENOMEM; |
| |
| cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RF_CHANNEL); |
| cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
| cmd->action = cpu_to_le16(MWL8K_CMD_SET); |
| cmd->current_channel = channel->hw_value; |
| |
| if (channel->band == IEEE80211_BAND_2GHZ) |
| cmd->channel_flags |= cpu_to_le32(0x00000001); |
| else if (channel->band == IEEE80211_BAND_5GHZ) |
| cmd->channel_flags |= cpu_to_le32(0x00000004); |
| |
| if (conf->channel_type == NL80211_CHAN_NO_HT || |
| conf->channel_type == NL80211_CHAN_HT20) |
| cmd->channel_flags |= cpu_to_le32(0x00000080); |
| else if (conf->channel_type == NL80211_CHAN_HT40MINUS) |
| cmd->channel_flags |= cpu_to_le32(0x000001900); |
| else if (conf->channel_type == NL80211_CHAN_HT40PLUS) |
| cmd->channel_flags |= cpu_to_le32(0x000000900); |
| |
| rc = mwl8k_post_cmd(hw, &cmd->header); |
| kfree(cmd); |
| |
| return rc; |
| } |
| |
| /* |
| * CMD_SET_AID. |
| */ |
| #define MWL8K_FRAME_PROT_DISABLED 0x00 |
| #define MWL8K_FRAME_PROT_11G 0x07 |
| #define MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY 0x02 |
| #define MWL8K_FRAME_PROT_11N_HT_ALL 0x06 |
| |
| struct mwl8k_cmd_update_set_aid { |
| struct mwl8k_cmd_pkt header; |
| __le16 aid; |
| |
| /* AP's MAC address (BSSID) */ |
| __u8 bssid[ETH_ALEN]; |
| __le16 protection_mode; |
| __u8 supp_rates[14]; |
| } __packed; |
| |
| static void legacy_rate_mask_to_array(u8 *rates, u32 mask) |
| { |
| int i; |
| int j; |
| |
| /* |
| * Clear nonstandard rates 4 and 13. |
| */ |
| mask &= 0x1fef; |
| |
| for (i = 0, j = 0; i < 14; i++) { |
| if (mask & (1 << i)) |
| rates[j++] = mwl8k_rates_24[i].hw_value; |
| } |
| } |
| |
| static int |
| mwl8k_cmd_set_aid(struct ieee80211_hw *hw, |
| struct ieee80211_vif *vif, u32 legacy_rate_mask) |
| { |
| struct mwl8k_cmd_update_set_aid *cmd; |
| u16 prot_mode; |
| int rc; |
| |
| cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
| if (cmd == NULL) |
| return -ENOMEM; |
| |
| cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_AID); |
| cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
| cmd->aid = cpu_to_le16(vif->bss_conf.aid); |
| memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN); |
| |
| if (vif->bss_conf.use_cts_prot) { |
| prot_mode = MWL8K_FRAME_PROT_11G; |
| } else { |
| switch (vif->bss_conf.ht_operation_mode & |
| IEEE80211_HT_OP_MODE_PROTECTION) { |
| case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ: |
| prot_mode = MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY; |
| break; |
| case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED: |
| prot_mode = MWL8K_FRAME_PROT_11N_HT_ALL; |
| break; |
| default: |
| prot_mode = MWL8K_FRAME_PROT_DISABLED; |
| break; |
| } |
| } |
| cmd->protection_mode = cpu_to_le16(prot_mode); |
| |
| legacy_rate_mask_to_array(cmd->supp_rates, legacy_rate_mask); |
| |
| rc = mwl8k_post_cmd(hw, &cmd->header); |
| kfree(cmd); |
| |
| return rc; |
| } |
| |
| /* |
| * CMD_SET_RATE. |
| */ |
| struct mwl8k_cmd_set_rate { |
| struct mwl8k_cmd_pkt header; |
| __u8 legacy_rates[14]; |
| |
| /* Bitmap for supported MCS codes. */ |
| __u8 mcs_set[16]; |
| __u8 reserved[16]; |
| } __packed; |
| |
| static int |
| mwl8k_cmd_set_rate(struct ieee80211_hw *hw, struct ieee80211_vif *vif, |
| u32 legacy_rate_mask, u8 *mcs_rates) |
| { |
| struct mwl8k_cmd_set_rate *cmd; |
| int rc; |
| |
| cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
| if (cmd == NULL) |
| return -ENOMEM; |
| |
| cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATE); |
| cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
| legacy_rate_mask_to_array(cmd->legacy_rates, legacy_rate_mask); |
| memcpy(cmd->mcs_set, mcs_rates, 16); |
| |
| rc = mwl8k_post_cmd(hw, &cmd->header); |
| kfree(cmd); |
| |
| return rc; |
| } |
| |
| /* |
| * CMD_FINALIZE_JOIN. |
| */ |
| #define MWL8K_FJ_BEACON_MAXLEN 128 |
| |
| struct mwl8k_cmd_finalize_join { |
| struct mwl8k_cmd_pkt header; |
| __le32 sleep_interval; /* Number of beacon periods to sleep */ |
| __u8 beacon_data[MWL8K_FJ_BEACON_MAXLEN]; |
| } __packed; |
| |
| static int mwl8k_cmd_finalize_join(struct ieee80211_hw *hw, void *frame, |
| int framelen, int dtim) |
| { |
| struct mwl8k_cmd_finalize_join *cmd; |
| struct ieee80211_mgmt *payload = frame; |
| int payload_len; |
| int rc; |
| |
| cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
| if (cmd == NULL) |
| return -ENOMEM; |
| |
| cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_FINALIZE_JOIN); |
| cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
| cmd->sleep_interval = cpu_to_le32(dtim ? dtim : 1); |
| |
| payload_len = framelen - ieee80211_hdrlen(payload->frame_control); |
| if (payload_len < 0) |
| payload_len = 0; |
| else if (payload_len > MWL8K_FJ_BEACON_MAXLEN) |
| payload_len = MWL8K_FJ_BEACON_MAXLEN; |
| |
| memcpy(cmd->beacon_data, &payload->u.beacon, payload_len); |
| |
| rc = mwl8k_post_cmd(hw, &cmd->header); |
| kfree(cmd); |
| |
| return rc; |
| } |
| |
| /* |
| * CMD_SET_RTS_THRESHOLD. |
| */ |
| struct mwl8k_cmd_set_rts_threshold { |
| struct mwl8k_cmd_pkt header; |
| __le16 action; |
| __le16 threshold; |
| } __packed; |
| |
| static int |
| mwl8k_cmd_set_rts_threshold(struct ieee80211_hw *hw, int rts_thresh) |
| { |
| struct mwl8k_cmd_set_rts_threshold *cmd; |
| int rc; |
| |
| cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
| if (cmd == NULL) |
| return -ENOMEM; |
| |
| cmd->header.code = cpu_to_le16(MWL8K_CMD_RTS_THRESHOLD); |
| cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
| cmd->action = cpu_to_le16(MWL8K_CMD_SET); |
| cmd->threshold = cpu_to_le16(rts_thresh); |
| |
| rc = mwl8k_post_cmd(hw, &cmd->header); |
| kfree(cmd); |
| |
| return rc; |
| } |
| |
| /* |
| * CMD_SET_SLOT. |
| */ |
| struct mwl8k_cmd_set_slot { |
| struct mwl8k_cmd_pkt header; |
| __le16 action; |
| __u8 short_slot; |
| } __packed; |
| |
| static int mwl8k_cmd_set_slot(struct ieee80211_hw *hw, bool short_slot_time) |
| { |
| struct mwl8k_cmd_set_slot *cmd; |
| int rc; |
| |
| cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
| if (cmd == NULL) |
| return -ENOMEM; |
| |
| cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_SLOT); |
| cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
| cmd->action = cpu_to_le16(MWL8K_CMD_SET); |
| cmd->short_slot = short_slot_time; |
| |
| rc = mwl8k_post_cmd(hw, &cmd->header); |
| kfree(cmd); |
| |
| return rc; |
| } |
| |
| /* |
| * CMD_SET_EDCA_PARAMS. |
| */ |
| struct mwl8k_cmd_set_edca_params { |
| struct mwl8k_cmd_pkt header; |
| |
| /* See MWL8K_SET_EDCA_XXX below */ |
| __le16 action; |
| |
| /* TX opportunity in units of 32 us */ |
| __le16 txop; |
| |
| union { |
| struct { |
| /* Log exponent of max contention period: 0...15 */ |
| __le32 log_cw_max; |
| |
| /* Log exponent of min contention period: 0...15 */ |
| __le32 log_cw_min; |
| |
| /* Adaptive interframe spacing in units of 32us */ |
| __u8 aifs; |
| |
| /* TX queue to configure */ |
| __u8 txq; |
| } ap; |
| struct { |
| /* Log exponent of max contention period: 0...15 */ |
| __u8 log_cw_max; |
| |
| /* Log exponent of min contention period: 0...15 */ |
| __u8 log_cw_min; |
| |
| /* Adaptive interframe spacing in units of 32us */ |
| __u8 aifs; |
| |
| /* TX queue to configure */ |
| __u8 txq; |
| } sta; |
| }; |
| } __packed; |
| |
| #define MWL8K_SET_EDCA_CW 0x01 |
| #define MWL8K_SET_EDCA_TXOP 0x02 |
| #define MWL8K_SET_EDCA_AIFS 0x04 |
| |
| #define MWL8K_SET_EDCA_ALL (MWL8K_SET_EDCA_CW | \ |
| MWL8K_SET_EDCA_TXOP | \ |
| MWL8K_SET_EDCA_AIFS) |
| |
| static int |
| mwl8k_cmd_set_edca_params(struct ieee80211_hw *hw, __u8 qnum, |
| __u16 cw_min, __u16 cw_max, |
| __u8 aifs, __u16 txop) |
| { |
| struct mwl8k_priv *priv = hw->priv; |
| struct mwl8k_cmd_set_edca_params *cmd; |
| int rc; |
| |
| cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
| if (cmd == NULL) |
| return -ENOMEM; |
| |
| cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_EDCA_PARAMS); |
| cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
| cmd->action = cpu_to_le16(MWL8K_SET_EDCA_ALL); |
| cmd->txop = cpu_to_le16(txop); |
| if (priv->ap_fw) { |
| cmd->ap.log_cw_max = cpu_to_le32(ilog2(cw_max + 1)); |
| cmd->ap.log_cw_min = cpu_to_le32(ilog2(cw_min + 1)); |
| cmd->ap.aifs = aifs; |
| cmd->ap.txq = qnum; |
| } else { |
| cmd->sta.log_cw_max = (u8)ilog2(cw_max + 1); |
| cmd->sta.log_cw_min = (u8)ilog2(cw_min + 1); |
| cmd->sta.aifs = aifs; |
| cmd->sta.txq = qnum; |
| } |
| |
| rc = mwl8k_post_cmd(hw, &cmd->header); |
| kfree(cmd); |
| |
| return rc; |
| } |
| |
| /* |
| * CMD_SET_WMM_MODE. |
| */ |
| struct mwl8k_cmd_set_wmm_mode { |
| struct mwl8k_cmd_pkt header; |
| __le16 action; |
| } __packed; |
| |
| static int mwl8k_cmd_set_wmm_mode(struct ieee80211_hw *hw, bool enable) |
| { |
| struct mwl8k_priv *priv = hw->priv; |
| struct mwl8k_cmd_set_wmm_mode *cmd; |
| int rc; |
| |
| cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
| if (cmd == NULL) |
| return -ENOMEM; |
| |
| cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_WMM_MODE); |
| cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
| cmd->action = cpu_to_le16(!!enable); |
| |
| rc = mwl8k_post_cmd(hw, &cmd->header); |
| kfree(cmd); |
| |
| if (!rc) |
| priv->wmm_enabled = enable; |
| |
| return rc; |
| } |
| |
| /* |
| * CMD_MIMO_CONFIG. |
| */ |
| struct mwl8k_cmd_mimo_config { |
| struct mwl8k_cmd_pkt header; |
| __le32 action; |
| __u8 rx_antenna_map; |
| __u8 tx_antenna_map; |
| } __packed; |
| |
| static int mwl8k_cmd_mimo_config(struct ieee80211_hw *hw, __u8 rx, __u8 tx) |
| { |
| struct mwl8k_cmd_mimo_config *cmd; |
| int rc; |
| |
| cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
| if (cmd == NULL) |
| return -ENOMEM; |
| |
| cmd->header.code = cpu_to_le16(MWL8K_CMD_MIMO_CONFIG); |
| cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
| cmd->action = cpu_to_le32((u32)MWL8K_CMD_SET); |
| cmd->rx_antenna_map = rx; |
| cmd->tx_antenna_map = tx; |
| |
| rc = mwl8k_post_cmd(hw, &cmd->header); |
| kfree(cmd); |
| |
| return rc; |
| } |
| |
| /* |
| * CMD_USE_FIXED_RATE (STA version). |
| */ |
| struct mwl8k_cmd_use_fixed_rate_sta { |
| struct mwl8k_cmd_pkt header; |
| __le32 action; |
| __le32 allow_rate_drop; |
| __le32 num_rates; |
| struct { |
| __le32 is_ht_rate; |
| __le32 enable_retry; |
| __le32 rate; |
| __le32 retry_count; |
| } rate_entry[8]; |
| __le32 rate_type; |
| __le32 reserved1; |
| __le32 reserved2; |
| } __packed; |
| |
| #define MWL8K_USE_AUTO_RATE 0x0002 |
| #define MWL8K_UCAST_RATE 0 |
| |
| static int mwl8k_cmd_use_fixed_rate_sta(struct ieee80211_hw *hw) |
| { |
| struct mwl8k_cmd_use_fixed_rate_sta *cmd; |
| int rc; |
| |
| cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
| if (cmd == NULL) |
| return -ENOMEM; |
| |
| cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE); |
| cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
| cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE); |
| cmd->rate_type = cpu_to_le32(MWL8K_UCAST_RATE); |
| |
| rc = mwl8k_post_cmd(hw, &cmd->header); |
| kfree(cmd); |
| |
| return rc; |
| } |
| |
| /* |
| * CMD_USE_FIXED_RATE (AP version). |
| */ |
| struct mwl8k_cmd_use_fixed_rate_ap { |
| struct mwl8k_cmd_pkt header; |
| __le32 action; |
| __le32 allow_rate_drop; |
| __le32 num_rates; |
| struct mwl8k_rate_entry_ap { |
| __le32 is_ht_rate; |
| __le32 enable_retry; |
| __le32 rate; |
| __le32 retry_count; |
| } rate_entry[4]; |
| u8 multicast_rate; |
| u8 multicast_rate_type; |
| u8 management_rate; |
| } __packed; |
| |
| static int |
| mwl8k_cmd_use_fixed_rate_ap(struct ieee80211_hw *hw, int mcast, int mgmt) |
| { |
| struct mwl8k_cmd_use_fixed_rate_ap *cmd; |
| int rc; |
| |
| cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
| if (cmd == NULL) |
| return -ENOMEM; |
| |
| cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE); |
| cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
| cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE); |
| cmd->multicast_rate = mcast; |
| cmd->management_rate = mgmt; |
| |
| rc = mwl8k_post_cmd(hw, &cmd->header); |
| kfree(cmd); |
| |
| return rc; |
| } |
| |
| /* |
| * CMD_ENABLE_SNIFFER. |
| */ |
| struct mwl8k_cmd_enable_sniffer { |
| struct mwl8k_cmd_pkt header; |
| __le32 action; |
| } __packed; |
| |
| static int mwl8k_cmd_enable_sniffer(struct ieee80211_hw *hw, bool enable) |
| { |
| struct mwl8k_cmd_enable_sniffer *cmd; |
| int rc; |
| |
| cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
| if (cmd == NULL) |
| return -ENOMEM; |
| |
| cmd->header.code = cpu_to_le16(MWL8K_CMD_ENABLE_SNIFFER); |
| cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
| cmd->action = cpu_to_le32(!!enable); |
| |
| rc = mwl8k_post_cmd(hw, &cmd->header); |
| kfree(cmd); |
| |
| return rc; |
| } |
| |
| /* |
| * CMD_SET_MAC_ADDR. |
| */ |
| struct mwl8k_cmd_set_mac_addr { |
| struct mwl8k_cmd_pkt header; |
| union { |
| struct { |
| __le16 mac_type; |
| __u8 mac_addr[ETH_ALEN]; |
| } mbss; |
| __u8 mac_addr[ETH_ALEN]; |
| }; |
| } __packed; |
| |
| #define MWL8K_MAC_TYPE_PRIMARY_CLIENT 0 |
| #define MWL8K_MAC_TYPE_SECONDARY_CLIENT 1 |
| #define MWL8K_MAC_TYPE_PRIMARY_AP 2 |
| #define MWL8K_MAC_TYPE_SECONDARY_AP 3 |
| |
| static int mwl8k_cmd_set_mac_addr(struct ieee80211_hw *hw, |
| struct ieee80211_vif *vif, u8 *mac) |
| { |
| struct mwl8k_priv *priv = hw->priv; |
| struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif); |
| struct mwl8k_cmd_set_mac_addr *cmd; |
| int mac_type; |
| int rc; |
| |
| mac_type = MWL8K_MAC_TYPE_PRIMARY_AP; |
| if (vif != NULL && vif->type == NL80211_IFTYPE_STATION) { |
| if (mwl8k_vif->macid + 1 == ffs(priv->sta_macids_supported)) |
| mac_type = MWL8K_MAC_TYPE_PRIMARY_CLIENT; |
| else |
| mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT; |
| } else if (vif != NULL && vif->type == NL80211_IFTYPE_AP) { |
| if (mwl8k_vif->macid + 1 == ffs(priv->ap_macids_supported)) |
| mac_type = MWL8K_MAC_TYPE_PRIMARY_AP; |
| else |
| mac_type = MWL8K_MAC_TYPE_SECONDARY_AP; |
| } |
| |
| cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
| if (cmd == NULL) |
| return -ENOMEM; |
| |
| cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_MAC_ADDR); |
| cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
| if (priv->ap_fw) { |
| cmd->mbss.mac_type = cpu_to_le16(mac_type); |
| memcpy(cmd->mbss.mac_addr, mac, ETH_ALEN); |
| } else { |
| memcpy(cmd->mac_addr, mac, ETH_ALEN); |
| } |
| |
| rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); |
| kfree(cmd); |
| |
| return rc; |
| } |
| |
| /* |
| * CMD_SET_RATEADAPT_MODE. |
| */ |
| struct mwl8k_cmd_set_rate_adapt_mode { |
| struct mwl8k_cmd_pkt header; |
| __le16 action; |
| __le16 mode; |
| } __packed; |
| |
| static int mwl8k_cmd_set_rateadapt_mode(struct ieee80211_hw *hw, __u16 mode) |
| { |
| struct mwl8k_cmd_set_rate_adapt_mode *cmd; |
| int rc; |
| |
| cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
| if (cmd == NULL) |
| return -ENOMEM; |
| |
| cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATEADAPT_MODE); |
| cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
| cmd->action = cpu_to_le16(MWL8K_CMD_SET); |
| cmd->mode = cpu_to_le16(mode); |
| |
| rc = mwl8k_post_cmd(hw, &cmd->header); |
| kfree(cmd); |
| |
| return rc; |
| } |
| |
| /* |
| * CMD_GET_WATCHDOG_BITMAP. |
| */ |
| struct mwl8k_cmd_get_watchdog_bitmap { |
| struct mwl8k_cmd_pkt header; |
| u8 bitmap; |
| } __packed; |
| |
| static int mwl8k_cmd_get_watchdog_bitmap(struct ieee80211_hw *hw, u8 *bitmap) |
| { |
| struct mwl8k_cmd_get_watchdog_bitmap *cmd; |
| int rc; |
| |
| cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
| if (cmd == NULL) |
| return -ENOMEM; |
| |
| cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_WATCHDOG_BITMAP); |
| cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
| |
| rc = mwl8k_post_cmd(hw, &cmd->header); |
| if (!rc) |
| *bitmap = cmd->bitmap; |
| |
| kfree(cmd); |
| |
| return rc; |
| } |
| |
| #define INVALID_BA 0xAA |
| static void mwl8k_watchdog_ba_events(struct work_struct *work) |
| { |
| int rc; |
| u8 bitmap = 0, stream_index; |
| struct mwl8k_ampdu_stream *streams; |
| struct mwl8k_priv *priv = |
| container_of(work, struct mwl8k_priv, watchdog_ba_handle); |
| |
| rc = mwl8k_cmd_get_watchdog_bitmap(priv->hw, &bitmap); |
| if (rc) |
| return; |
| |
| if (bitmap == INVALID_BA) |
| return; |
| |
| /* the bitmap is the hw queue number. Map it to the ampdu queue. */ |
| stream_index = bitmap - MWL8K_TX_WMM_QUEUES; |
| |
| BUG_ON(stream_index >= priv->num_ampdu_queues); |
| |
| streams = &priv->ampdu[stream_index]; |
| |
| if (streams->state == AMPDU_STREAM_ACTIVE) |
| ieee80211_stop_tx_ba_session(streams->sta, streams->tid); |
| |
| return; |
| } |
| |
| |
| /* |
| * CMD_BSS_START. |
| */ |
| struct mwl8k_cmd_bss_start { |
| struct mwl8k_cmd_pkt header; |
| __le32 enable; |
| } __packed; |
| |
| static int mwl8k_cmd_bss_start(struct ieee80211_hw *hw, |
| struct ieee80211_vif *vif, int enable) |
| { |
| struct mwl8k_cmd_bss_start *cmd; |
| int rc; |
| |
| cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
| if (cmd == NULL) |
| return -ENOMEM; |
| |
| cmd->header.code = cpu_to_le16(MWL8K_CMD_BSS_START); |
| cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
| cmd->enable = cpu_to_le32(enable); |
| |
| rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); |
| kfree(cmd); |
| |
| return rc; |
| } |
| |
| /* |
| * CMD_BASTREAM. |
| */ |
| |
| /* |
| * UPSTREAM is tx direction |
| */ |
| #define BASTREAM_FLAG_DIRECTION_UPSTREAM 0x00 |
| #define BASTREAM_FLAG_IMMEDIATE_TYPE 0x01 |
| |
| enum ba_stream_action_type { |
| MWL8K_BA_CREATE, |
| MWL8K_BA_UPDATE, |
| MWL8K_BA_DESTROY, |
| MWL8K_BA_FLUSH, |
| MWL8K_BA_CHECK, |
| }; |
| |
| |
| struct mwl8k_create_ba_stream { |
| __le32 flags; |
| __le32 idle_thrs; |
| __le32 bar_thrs; |
| __le32 window_size; |
| u8 peer_mac_addr[6]; |
| u8 dialog_token; |
| u8 tid; |
| u8 queue_id; |
| u8 param_info; |
| __le32 ba_context; |
| u8 reset_seq_no_flag; |
| __le16 curr_seq_no; |
| u8 sta_src_mac_addr[6]; |
| } __packed; |
| |
| struct mwl8k_destroy_ba_stream { |
| __le32 flags; |
| __le32 ba_context; |
| } __packed; |
| |
| struct mwl8k_cmd_bastream { |
| struct mwl8k_cmd_pkt header; |
| __le32 action; |
| union { |
| struct mwl8k_create_ba_stream create_params; |
| struct mwl8k_destroy_ba_stream destroy_params; |
| }; |
| } __packed; |
| |
| static int |
| mwl8k_check_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream) |
| { |
| struct mwl8k_cmd_bastream *cmd; |
| int rc; |
| |
| cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
| if (cmd == NULL) |
| return -ENOMEM; |
| |
| cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM); |
| cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
| |
| cmd->action = cpu_to_le32(MWL8K_BA_CHECK); |
| |
| cmd->create_params.queue_id = stream->idx; |
| memcpy(&cmd->create_params.peer_mac_addr[0], stream->sta->addr, |
| ETH_ALEN); |
| cmd->create_params.tid = stream->tid; |
| |
| cmd->create_params.flags = |
| cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE) | |
| cpu_to_le32(BASTREAM_FLAG_DIRECTION_UPSTREAM); |
| |
| rc = mwl8k_post_cmd(hw, &cmd->header); |
| |
| kfree(cmd); |
| |
| return rc; |
| } |
| |
| static int |
| mwl8k_create_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream, |
| u8 buf_size) |
| { |
| struct mwl8k_cmd_bastream *cmd; |
| int rc; |
| |
| cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
| if (cmd == NULL) |
| return -ENOMEM; |
| |
| |
| cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM); |
| cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
| |
| cmd->action = cpu_to_le32(MWL8K_BA_CREATE); |
| |
| cmd->create_params.bar_thrs = cpu_to_le32((u32)buf_size); |
| cmd->create_params.window_size = cpu_to_le32((u32)buf_size); |
| cmd->create_params.queue_id = stream->idx; |
| |
| memcpy(cmd->create_params.peer_mac_addr, stream->sta->addr, ETH_ALEN); |
| cmd->create_params.tid = stream->tid; |
| cmd->create_params.curr_seq_no = cpu_to_le16(0); |
| cmd->create_params.reset_seq_no_flag = 1; |
| |
| cmd->create_params.param_info = |
| (stream->sta->ht_cap.ampdu_factor & |
| IEEE80211_HT_AMPDU_PARM_FACTOR) | |
| ((stream->sta->ht_cap.ampdu_density << 2) & |
| IEEE80211_HT_AMPDU_PARM_DENSITY); |
| |
| cmd->create_params.flags = |
| cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE | |
| BASTREAM_FLAG_DIRECTION_UPSTREAM); |
| |
| rc = mwl8k_post_cmd(hw, &cmd->header); |
| |
| wiphy_debug(hw->wiphy, "Created a BA stream for %pM : tid %d\n", |
| stream->sta->addr, stream->tid); |
| kfree(cmd); |
| |
| return rc; |
| } |
| |
| static void mwl8k_destroy_ba(struct ieee80211_hw *hw, |
| struct mwl8k_ampdu_stream *stream) |
| { |
| struct mwl8k_cmd_bastream *cmd; |
| |
| cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
| if (cmd == NULL) |
| return; |
| |
| cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM); |
| cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
| cmd->action = cpu_to_le32(MWL8K_BA_DESTROY); |
| |
| cmd->destroy_params.ba_context = cpu_to_le32(stream->idx); |
| mwl8k_post_cmd(hw, &cmd->header); |
| |
| wiphy_debug(hw->wiphy, "Deleted BA stream index %d\n", stream->idx); |
| |
| kfree(cmd); |
| } |
| |
| /* |
| * CMD_SET_NEW_STN. |
| */ |
| struct mwl8k_cmd_set_new_stn { |
| struct mwl8k_cmd_pkt header; |
| __le16 aid; |
| __u8 mac_addr[6]; |
| __le16 stn_id; |
| __le16 action; |
| __le16 rsvd; |
| __le32 legacy_rates; |
| __u8 ht_rates[4]; |
| __le16 cap_info; |
| __le16 ht_capabilities_info; |
| __u8 mac_ht_param_info; |
| __u8 rev; |
| __u8 control_channel; |
| __u8 add_channel; |
| __le16 op_mode; |
| __le16 stbc; |
| __u8 add_qos_info; |
| __u8 is_qos_sta; |
| __le32 fw_sta_ptr; |
| } __packed; |
| |
| #define MWL8K_STA_ACTION_ADD 0 |
| #define MWL8K_STA_ACTION_REMOVE 2 |
| |
| static int mwl8k_cmd_set_new_stn_add(struct ieee80211_hw *hw, |
| struct ieee80211_vif *vif, |
| struct ieee80211_sta *sta) |
| { |
| struct mwl8k_cmd_set_new_stn *cmd; |
| u32 rates; |
| int rc; |
| |
| cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
| if (cmd == NULL) |
| return -ENOMEM; |
| |
| cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN); |
| cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
| cmd->aid = cpu_to_le16(sta->aid); |
| memcpy(cmd->mac_addr, sta->addr, ETH_ALEN); |
| cmd->stn_id = cpu_to_le16(sta->aid); |
| cmd->action = cpu_to_le16(MWL8K_STA_ACTION_ADD); |
| if (hw->conf.channel->band == IEEE80211_BAND_2GHZ) |
| rates = sta->supp_rates[IEEE80211_BAND_2GHZ]; |
| else |
| rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5; |
| cmd->legacy_rates = cpu_to_le32(rates); |
| if (sta->ht_cap.ht_supported) { |
| cmd->ht_rates[0] = sta->ht_cap.mcs.rx_mask[0]; |
| cmd->ht_rates[1] = sta->ht_cap.mcs.rx_mask[1]; |
| cmd->ht_rates[2] = sta->ht_cap.mcs.rx_mask[2]; |
| cmd->ht_rates[3] = sta->ht_cap.mcs.rx_mask[3]; |
| cmd->ht_capabilities_info = cpu_to_le16(sta->ht_cap.cap); |
| cmd->mac_ht_param_info = (sta->ht_cap.ampdu_factor & 3) | |
| ((sta->ht_cap.ampdu_density & 7) << 2); |
| cmd->is_qos_sta = 1; |
| } |
| |
| rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); |
| kfree(cmd); |
| |
| return rc; |
| } |
| |
| static int mwl8k_cmd_set_new_stn_add_self(struct ieee80211_hw *hw, |
| struct ieee80211_vif *vif) |
| { |
| struct mwl8k_cmd_set_new_stn *cmd; |
| int rc; |
| |
| cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
| if (cmd == NULL) |
| return -ENOMEM; |
| |
| cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN); |
| cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
| memcpy(cmd->mac_addr, vif->addr, ETH_ALEN); |
| |
| rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); |
| kfree(cmd); |
| |
| return rc; |
| } |
| |
| static int mwl8k_cmd_set_new_stn_del(struct ieee80211_hw *hw, |
| struct ieee80211_vif *vif, u8 *addr) |
| { |
| struct mwl8k_cmd_set_new_stn *cmd; |
| int rc; |
| |
| cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
| if (cmd == NULL) |
| return -ENOMEM; |
| |
| cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN); |
| cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
| memcpy(cmd->mac_addr, addr, ETH_ALEN); |
| cmd->action = cpu_to_le16(MWL8K_STA_ACTION_REMOVE); |
| |
| rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); |
| kfree(cmd); |
| |
| return rc; |
| } |
| |
| /* |
| * CMD_UPDATE_ENCRYPTION. |
| */ |
| |
| #define MAX_ENCR_KEY_LENGTH 16 |
| #define MIC_KEY_LENGTH 8 |
| |
| struct mwl8k_cmd_update_encryption { |
| struct mwl8k_cmd_pkt header; |
| |
| __le32 action; |
| __le32 reserved; |
| __u8 mac_addr[6]; |
| __u8 encr_type; |
| |
| } __packed; |
| |
| struct mwl8k_cmd_set_key { |
| struct mwl8k_cmd_pkt header; |
| |
| __le32 action; |
| __le32 reserved; |
| __le16 length; |
| __le16 key_type_id; |
| __le32 key_info; |
| __le32 key_id; |
| __le16 key_len; |
| __u8 key_material[MAX_ENCR_KEY_LENGTH]; |
| __u8 tkip_tx_mic_key[MIC_KEY_LENGTH]; |
| __u8 tkip_rx_mic_key[MIC_KEY_LENGTH]; |
| __le16 tkip_rsc_low; |
| __le32 tkip_rsc_high; |
| __le16 tkip_tsc_low; |
| __le32 tkip_tsc_high; |
| __u8 mac_addr[6]; |
| } __packed; |
| |
| enum { |
| MWL8K_ENCR_ENABLE, |
| MWL8K_ENCR_SET_KEY, |
| MWL8K_ENCR_REMOVE_KEY, |
| MWL8K_ENCR_SET_GROUP_KEY, |
| }; |
| |
| #define MWL8K_UPDATE_ENCRYPTION_TYPE_WEP 0 |
| #define MWL8K_UPDATE_ENCRYPTION_TYPE_DISABLE 1 |
| #define MWL8K_UPDATE_ENCRYPTION_TYPE_TKIP 4 |
| #define MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED 7 |
| #define MWL8K_UPDATE_ENCRYPTION_TYPE_AES 8 |
| |
| enum { |
| MWL8K_ALG_WEP, |
| MWL8K_ALG_TKIP, |
| MWL8K_ALG_CCMP, |
| }; |
| |
| #define MWL8K_KEY_FLAG_TXGROUPKEY 0x00000004 |
| #define MWL8K_KEY_FLAG_PAIRWISE 0x00000008 |
| #define MWL8K_KEY_FLAG_TSC_VALID 0x00000040 |
| #define MWL8K_KEY_FLAG_WEP_TXKEY 0x01000000 |
| #define MWL8K_KEY_FLAG_MICKEY_VALID 0x02000000 |
| |
| static int mwl8k_cmd_update_encryption_enable(struct ieee80211_hw *hw, |
| struct ieee80211_vif *vif, |
| u8 *addr, |
| u8 encr_type) |
| { |
| struct mwl8k_cmd_update_encryption *cmd; |
| int rc; |
| |
| cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
| if (cmd == NULL) |
| return -ENOMEM; |
| |
| cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION); |
| cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
| cmd->action = cpu_to_le32(MWL8K_ENCR_ENABLE); |
| memcpy(cmd->mac_addr, addr, ETH_ALEN); |
| cmd->encr_type = encr_type; |
| |
| rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); |
| kfree(cmd); |
| |
| return rc; |
| } |
| |
| static int mwl8k_encryption_set_cmd_info(struct mwl8k_cmd_set_key *cmd, |
| u8 *addr, |
| struct ieee80211_key_conf *key) |
| { |
| cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION); |
| cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
| cmd->length = cpu_to_le16(sizeof(*cmd) - |
| offsetof(struct mwl8k_cmd_set_key, length)); |
| cmd->key_id = cpu_to_le32(key->keyidx); |
| cmd->key_len = cpu_to_le16(key->keylen); |
| memcpy(cmd->mac_addr, addr, ETH_ALEN); |
| |
| switch (key->cipher) { |
| case WLAN_CIPHER_SUITE_WEP40: |
| case WLAN_CIPHER_SUITE_WEP104: |
| cmd->key_type_id = cpu_to_le16(MWL8K_ALG_WEP); |
| if (key->keyidx == 0) |
| cmd->key_info = cpu_to_le32(MWL8K_KEY_FLAG_WEP_TXKEY); |
| |
| break; |
| case WLAN_CIPHER_SUITE_TKIP: |
| cmd->key_type_id = cpu_to_le16(MWL8K_ALG_TKIP); |
| cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) |
| ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE) |
| : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY); |
| cmd->key_info |= cpu_to_le32(MWL8K_KEY_FLAG_MICKEY_VALID |
| | MWL8K_KEY_FLAG_TSC_VALID); |
| break; |
| case WLAN_CIPHER_SUITE_CCMP: |
| cmd->key_type_id = cpu_to_le16(MWL8K_ALG_CCMP); |
| cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) |
| ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE) |
| : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY); |
| break; |
| default: |
| return -ENOTSUPP; |
| } |
| |
| return 0; |
| } |
| |
| static int mwl8k_cmd_encryption_set_key(struct ieee80211_hw *hw, |
| struct ieee80211_vif *vif, |
| u8 *addr, |
| struct ieee80211_key_conf *key) |
| { |
| struct mwl8k_cmd_set_key *cmd; |
| int rc; |
| int keymlen; |
| u32 action; |
| u8 idx; |
| struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif); |
| |
| cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
| if (cmd == NULL) |
| return -ENOMEM; |
| |
| rc = mwl8k_encryption_set_cmd_info(cmd, addr, key); |
| if (rc < 0) |
| goto done; |
| |
| idx = key->keyidx; |
| |
| if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) |
| action = MWL8K_ENCR_SET_KEY; |
| else |
| action = MWL8K_ENCR_SET_GROUP_KEY; |
| |
| switch (key->cipher) { |
| case WLAN_CIPHER_SUITE_WEP40: |
| case WLAN_CIPHER_SUITE_WEP104: |
| if (!mwl8k_vif->wep_key_conf[idx].enabled) { |
| memcpy(mwl8k_vif->wep_key_conf[idx].key, key, |
| sizeof(*key) + key->keylen); |
| mwl8k_vif->wep_key_conf[idx].enabled = 1; |
| } |
| |
| keymlen = 0; |
| action = MWL8K_ENCR_SET_KEY; |
| break; |
| case WLAN_CIPHER_SUITE_TKIP: |
| keymlen = MAX_ENCR_KEY_LENGTH + 2 * MIC_KEY_LENGTH; |
| break; |
| case WLAN_CIPHER_SUITE_CCMP: |
| keymlen = key->keylen; |
| break; |
| default: |
| rc = -ENOTSUPP; |
| goto done; |
| } |
| |
| memcpy(cmd->key_material, key->key, keymlen); |
| cmd->action = cpu_to_le32(action); |
| |
| rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); |
| done: |
| kfree(cmd); |
| |
| return rc; |
| } |
| |
| static int mwl8k_cmd_encryption_remove_key(struct ieee80211_hw *hw, |
| struct ieee80211_vif *vif, |
| u8 *addr, |
| struct ieee80211_key_conf *key) |
| { |
| struct mwl8k_cmd_set_key *cmd; |
| int rc; |
| struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif); |
| |
| cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
| if (cmd == NULL) |
| return -ENOMEM; |
| |
| rc = mwl8k_encryption_set_cmd_info(cmd, addr, key); |
| if (rc < 0) |
| goto done; |
| |
| if (key->cipher == WLAN_CIPHER_SUITE_WEP40 || |
| WLAN_CIPHER_SUITE_WEP104) |
| mwl8k_vif->wep_key_conf[key->keyidx].enabled = 0; |
| |
| cmd->action = cpu_to_le32(MWL8K_ENCR_REMOVE_KEY); |
| |
| rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); |
| done: |
| kfree(cmd); |
| |
| return rc; |
| } |
| |
| static int mwl8k_set_key(struct ieee80211_hw *hw, |
| enum set_key_cmd cmd_param, |
| struct ieee80211_vif *vif, |
| struct ieee80211_sta *sta, |
| struct ieee80211_key_conf *key) |
| { |
| int rc = 0; |
| u8 encr_type; |
| u8 *addr; |
| struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif); |
| |
| if (vif->type == NL80211_IFTYPE_STATION) |
| return -EOPNOTSUPP; |
| |
| if (sta == NULL) |
| addr = hw->wiphy->perm_addr; |
| else |
| addr = sta->addr; |
| |
| if (cmd_param == SET_KEY) { |
| key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; |
| rc = mwl8k_cmd_encryption_set_key(hw, vif, addr, key); |
| if (rc) |
| goto out; |
| |
| if ((key->cipher == WLAN_CIPHER_SUITE_WEP40) |
| || (key->cipher == WLAN_CIPHER_SUITE_WEP104)) |
| encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_WEP; |
| else |
| encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED; |
| |
| rc = mwl8k_cmd_update_encryption_enable(hw, vif, addr, |
| encr_type); |
| if (rc) |
| goto out; |
| |
| mwl8k_vif->is_hw_crypto_enabled = true; |
| |
| } else { |
| rc = mwl8k_cmd_encryption_remove_key(hw, vif, addr, key); |
| |
| if (rc) |
| goto out; |
| |
| mwl8k_vif->is_hw_crypto_enabled = false; |
| |
| } |
| out: |
| return rc; |
| } |
| |
| /* |
| * CMD_UPDATE_STADB. |
| */ |
| struct ewc_ht_info { |
| __le16 control1; |
| __le16 control2; |
| __le16 control3; |
| } __packed; |
| |
| struct peer_capability_info { |
| /* Peer type - AP vs. STA. */ |
| __u8 peer_type; |
| |
| /* Basic 802.11 capabilities from assoc resp. */ |
| __le16 basic_caps; |
| |
| /* Set if peer supports 802.11n high throughput (HT). */ |
| __u8 ht_support; |
| |
| /* Valid if HT is supported. */ |
| __le16 ht_caps; |
| __u8 extended_ht_caps; |
| struct ewc_ht_info ewc_info; |
| |
| /* Legacy rate table. Intersection of our rates and peer rates. */ |
| __u8 legacy_rates[12]; |
| |
| /* HT rate table. Intersection of our rates and peer rates. */ |
| __u8 ht_rates[16]; |
| __u8 pad[16]; |
| |
| /* If set, interoperability mode, no proprietary extensions. */ |
| __u8 interop; |
| __u8 pad2; |
| __u8 station_id; |
| __le16 amsdu_enabled; |
| } __packed; |
| |
| struct mwl8k_cmd_update_stadb { |
| struct mwl8k_cmd_pkt header; |
| |
| /* See STADB_ACTION_TYPE */ |
| __le32 action; |
| |
| /* Peer MAC address */ |
| __u8 peer_addr[ETH_ALEN]; |
| |
| __le32 reserved; |
| |
| /* Peer info - valid during add/update. */ |
| struct peer_capability_info peer_info; |
| } __packed; |
| |
| #define MWL8K_STA_DB_MODIFY_ENTRY 1 |
| #define MWL8K_STA_DB_DEL_ENTRY 2 |
| |
| /* Peer Entry flags - used to define the type of the peer node */ |
| #define MWL8K_PEER_TYPE_ACCESSPOINT 2 |
| |
| static int mwl8k_cmd_update_stadb_add(struct ieee80211_hw *hw, |
| struct ieee80211_vif *vif, |
| struct ieee80211_sta *sta) |
| { |
| struct mwl8k_cmd_update_stadb *cmd; |
| struct peer_capability_info *p; |
| u32 rates; |
| int rc; |
| |
| cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
| if (cmd == NULL) |
| return -ENOMEM; |
| |
| cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB); |
| cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
| cmd->action = cpu_to_le32(MWL8K_STA_DB_MODIFY_ENTRY); |
| memcpy(cmd->peer_addr, sta->addr, ETH_ALEN); |
| |
| p = &cmd->peer_info; |
| p->peer_type = MWL8K_PEER_TYPE_ACCESSPOINT; |
| p->basic_caps = cpu_to_le16(vif->bss_conf.assoc_capability); |
| p->ht_support = sta->ht_cap.ht_supported; |
| p->ht_caps = cpu_to_le16(sta->ht_cap.cap); |
| p->extended_ht_caps = (sta->ht_cap.ampdu_factor & 3) | |
| ((sta->ht_cap.ampdu_density & 7) << 2); |
| if (hw->conf.channel->band == IEEE80211_BAND_2GHZ) |
| rates = sta->supp_rates[IEEE80211_BAND_2GHZ]; |
| else |
| rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5; |
| legacy_rate_mask_to_array(p->legacy_rates, rates); |
| memcpy(p->ht_rates, sta->ht_cap.mcs.rx_mask, 16); |
| p->interop = 1; |
| p->amsdu_enabled = 0; |
| |
| rc = mwl8k_post_cmd(hw, &cmd->header); |
| kfree(cmd); |
| |
| return rc ? rc : p->station_id; |
| } |
| |
| static int mwl8k_cmd_update_stadb_del(struct ieee80211_hw *hw, |
| struct ieee80211_vif *vif, u8 *addr) |
| { |
| struct mwl8k_cmd_update_stadb *cmd; |
| int rc; |
| |
| cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
| if (cmd == NULL) |
| return -ENOMEM; |
| |
| cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB); |
| cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
| cmd->action = cpu_to_le32(MWL8K_STA_DB_DEL_ENTRY); |
| memcpy(cmd->peer_addr, addr, ETH_ALEN); |
| |
| rc = mwl8k_post_cmd(hw, &cmd->header); |
| kfree(cmd); |
| |
| return rc; |
| } |
| |
| |
| /* |
| * Interrupt handling. |
| */ |
| static irqreturn_t mwl8k_interrupt(int irq, void *dev_id) |
| { |
| struct ieee80211_hw *hw = dev_id; |
| struct mwl8k_priv *priv = hw->priv; |
| u32 status; |
| |
| status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS); |
| if (!status) |
| return IRQ_NONE; |
| |
| if (status & MWL8K_A2H_INT_TX_DONE) { |
| status &= ~MWL8K_A2H_INT_TX_DONE; |
| tasklet_schedule(&priv->poll_tx_task); |
| } |
| |
| if (status & MWL8K_A2H_INT_RX_READY) { |
| status &= ~MWL8K_A2H_INT_RX_READY; |
| tasklet_schedule(&priv->poll_rx_task); |
| } |
| |
| if (status & MWL8K_A2H_INT_BA_WATCHDOG) { |
| status &= ~MWL8K_A2H_INT_BA_WATCHDOG; |
| ieee80211_queue_work(hw, &priv->watchdog_ba_handle); |
| } |
| |
| if (status) |
| iowrite32(~status, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS); |
| |
| if (status & MWL8K_A2H_INT_OPC_DONE) { |
| if (priv->hostcmd_wait != NULL) |
| complete(priv->hostcmd_wait); |
| } |
| |
| if (status & MWL8K_A2H_INT_QUEUE_EMPTY) { |
| if (!mutex_is_locked(&priv->fw_mutex) && |
| priv->radio_on && priv->pending_tx_pkts) |
| mwl8k_tx_start(priv); |
| } |
| |
| return IRQ_HANDLED; |
| } |
| |
| static void mwl8k_tx_poll(unsigned long data) |
| { |
| struct ieee80211_hw *hw = (struct ieee80211_hw *)data; |
| struct mwl8k_priv *priv = hw->priv; |
| int limit; |
| int i; |
| |
| limit = 32; |
| |
| spin_lock_bh(&priv->tx_lock); |
| |
| for (i = 0; i < mwl8k_tx_queues(priv); i++) |
| limit -= mwl8k_txq_reclaim(hw, i, limit, 0); |
| |
| if (!priv->pending_tx_pkts && priv->tx_wait != NULL) { |
| complete(priv->tx_wait); |
| priv->tx_wait = NULL; |
| } |
| |
| spin_unlock_bh(&priv->tx_lock); |
| |
| if (limit) { |
| writel(~MWL8K_A2H_INT_TX_DONE, |
| priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS); |
| } else { |
| tasklet_schedule(&priv->poll_tx_task); |
| } |
| } |
| |
| static void mwl8k_rx_poll(unsigned long data) |
| { |
| struct ieee80211_hw *hw = (struct ieee80211_hw *)data; |
| struct mwl8k_priv *priv = hw->priv; |
| int limit; |
| |
| limit = 32; |
| limit -= rxq_process(hw, 0, limit); |
| limit -= rxq_refill(hw, 0, limit); |
| |
| if (limit) { |
| writel(~MWL8K_A2H_INT_RX_READY, |
| priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS); |
| } else { |
| tasklet_schedule(&priv->poll_rx_task); |
| } |
| } |
| |
| |
| /* |
| * Core driver operations. |
| */ |
| static void mwl8k_tx(struct ieee80211_hw *hw, struct sk_buff *skb) |
| { |
| struct mwl8k_priv *priv = hw->priv; |
| int index = skb_get_queue_mapping(skb); |
| |
| if (!priv->radio_on) { |
| wiphy_debug(hw->wiphy, |
| "dropped TX frame since radio disabled\n"); |
| dev_kfree_skb(skb); |
| return; |
| } |
| |
| mwl8k_txq_xmit(hw, index, skb); |
| } |
| |
| static int mwl8k_start(struct ieee80211_hw *hw) |
| { |
| struct mwl8k_priv *priv = hw->priv; |
| int rc; |
| |
| rc = request_irq(priv->pdev->irq, mwl8k_interrupt, |
| IRQF_SHARED, MWL8K_NAME, hw); |
| if (rc) { |
| priv->irq = -1; |
| wiphy_err(hw->wiphy, "failed to register IRQ handler\n"); |
| return -EIO; |
| } |
| priv->irq = priv->pdev->irq; |
| |
| /* Enable TX reclaim and RX tasklets. */ |
| tasklet_enable(&priv->poll_tx_task); |
| tasklet_enable(&priv->poll_rx_task); |
| |
| /* Enable interrupts */ |
| iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); |
| iowrite32(MWL8K_A2H_EVENTS, |
| priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK); |
| |
| rc = mwl8k_fw_lock(hw); |
| if (!rc) { |
| rc = mwl8k_cmd_radio_enable(hw); |
| |
| if (!priv->ap_fw) { |
| if (!rc) |
| rc = mwl8k_cmd_enable_sniffer(hw, 0); |
| |
| if (!rc) |
| rc = mwl8k_cmd_set_pre_scan(hw); |
| |
| if (!rc) |
| rc = mwl8k_cmd_set_post_scan(hw, |
| "\x00\x00\x00\x00\x00\x00"); |
| } |
| |
| if (!rc) |
| rc = mwl8k_cmd_set_rateadapt_mode(hw, 0); |
| |
| if (!rc) |
| rc = mwl8k_cmd_set_wmm_mode(hw, 0); |
| |
| mwl8k_fw_unlock(hw); |
| } |
| |
| if (rc) { |
| iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); |
| free_irq(priv->pdev->irq, hw); |
| priv->irq = -1; |
| tasklet_disable(&priv->poll_tx_task); |
| tasklet_disable(&priv->poll_rx_task); |
| } |
| |
| return rc; |
| } |
| |
| static void mwl8k_stop(struct ieee80211_hw *hw) |
| { |
| struct mwl8k_priv *priv = hw->priv; |
| int i; |
| |
| mwl8k_cmd_radio_disable(hw); |
| |
| ieee80211_stop_queues(hw); |
| |
| /* Disable interrupts */ |
| iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); |
| if (priv->irq != -1) { |
| free_irq(priv->pdev->irq, hw); |
| priv->irq = -1; |
| } |
| |
| /* Stop finalize join worker */ |
| cancel_work_sync(&priv->finalize_join_worker); |
| cancel_work_sync(&priv->watchdog_ba_handle); |
| if (priv->beacon_skb != NULL) |
| dev_kfree_skb(priv->beacon_skb); |
| |
| /* Stop TX reclaim and RX tasklets. */ |
| tasklet_disable(&priv->poll_tx_task); |
| tasklet_disable(&priv->poll_rx_task); |
| |
| /* Return all skbs to mac80211 */ |
| for (i = 0; i < mwl8k_tx_queues(priv); i++) |
| mwl8k_txq_reclaim(hw, i, INT_MAX, 1); |
| } |
| |
| static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image); |
| |
| static int mwl8k_add_interface(struct ieee80211_hw *hw, |
| struct ieee80211_vif *vif) |
| { |
| struct mwl8k_priv *priv = hw->priv; |
| struct mwl8k_vif *mwl8k_vif; |
| u32 macids_supported; |
| int macid, rc; |
| struct mwl8k_device_info *di; |
| |
| /* |
| * Reject interface creation if sniffer mode is active, as |
| * STA operation is mutually exclusive with hardware sniffer |
| * mode. (Sniffer mode is only used on STA firmware.) |
| */ |
| if (priv->sniffer_enabled) { |
| wiphy_info(hw->wiphy, |
| "unable to create STA interface because sniffer mode is enabled\n"); |
| return -EINVAL; |
| } |
| |
| di = priv->device_info; |
| switch (vif->type) { |
| case NL80211_IFTYPE_AP: |
| if (!priv->ap_fw && di->fw_image_ap) { |
| /* we must load the ap fw to meet this request */ |
| if (!list_empty(&priv->vif_list)) |
| return -EBUSY; |
| rc = mwl8k_reload_firmware(hw, di->fw_image_ap); |
| if (rc) |
| return rc; |
| } |
| macids_supported = priv->ap_macids_supported; |
| break; |
| case NL80211_IFTYPE_STATION: |
| if (priv->ap_fw && di->fw_image_sta) { |
| /* we must load the sta fw to meet this request */ |
| if (!list_empty(&priv->vif_list)) |
| return -EBUSY; |
| rc = mwl8k_reload_firmware(hw, di->fw_image_sta); |
| if (rc) |
| return rc; |
| } |
| macids_supported = priv->sta_macids_supported; |
| break; |
| default: |
| return -EINVAL; |
| } |
| |
| macid = ffs(macids_supported & ~priv->macids_used); |
| if (!macid--) |
| return -EBUSY; |
| |
| /* Setup driver private area. */ |
| mwl8k_vif = MWL8K_VIF(vif); |
| memset(mwl8k_vif, 0, sizeof(*mwl8k_vif)); |
| mwl8k_vif->vif = vif; |
| mwl8k_vif->macid = macid; |
| mwl8k_vif->seqno = 0; |
| memcpy(mwl8k_vif->bssid, vif->addr, ETH_ALEN); |
| mwl8k_vif->is_hw_crypto_enabled = false; |
| |
| /* Set the mac address. */ |
| mwl8k_cmd_set_mac_addr(hw, vif, vif->addr); |
| |
| if (priv->ap_fw) |
| mwl8k_cmd_set_new_stn_add_self(hw, vif); |
| |
| priv->macids_used |= 1 << mwl8k_vif->macid; |
| list_add_tail(&mwl8k_vif->list, &priv->vif_list); |
| |
| return 0; |
| } |
| |
| static void mwl8k_remove_interface(struct ieee80211_hw *hw, |
| struct ieee80211_vif *vif) |
| { |
| struct mwl8k_priv *priv = hw->priv; |
| struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif); |
| |
| if (priv->ap_fw) |
| mwl8k_cmd_set_new_stn_del(hw, vif, vif->addr); |
| |
| mwl8k_cmd_set_mac_addr(hw, vif, "\x00\x00\x00\x00\x00\x00"); |
| |
| priv->macids_used &= ~(1 << mwl8k_vif->macid); |
| list_del(&mwl8k_vif->list); |
| } |
| |
| static int mwl8k_config(struct ieee80211_hw *hw, u32 changed) |
| { |
| struct ieee80211_conf *conf = &hw->conf; |
| struct mwl8k_priv *priv = hw->priv; |
| int rc; |
| |
| if (conf->flags & IEEE80211_CONF_IDLE) { |
| mwl8k_cmd_radio_disable(hw); |
| return 0; |
| } |
| |
| rc = mwl8k_fw_lock(hw); |
| if (rc) |
| return rc; |
| |
| rc = mwl8k_cmd_radio_enable(hw); |
| if (rc) |
| goto out; |
| |
| rc = mwl8k_cmd_set_rf_channel(hw, conf); |
| if (rc) |
| goto out; |
| |
| if (conf->power_level > 18) |
| conf->power_level = 18; |
| |
| if (priv->ap_fw) { |
| |
| if (conf->flags & IEEE80211_CONF_CHANGE_POWER) { |
| rc = mwl8k_cmd_tx_power(hw, conf, conf->power_level); |
| if (rc) |
| goto out; |
| } |
| |
| rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_RX, 0x3); |
| if (rc) |
| wiphy_warn(hw->wiphy, "failed to set # of RX antennas"); |
| rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_TX, 0x7); |
| if (rc) |
| wiphy_warn(hw->wiphy, "failed to set # of TX antennas"); |
| |
| } else { |
| rc = mwl8k_cmd_rf_tx_power(hw, conf->power_level); |
| if (rc) |
| goto out; |
| rc = mwl8k_cmd_mimo_config(hw, 0x7, 0x7); |
| } |
| |
| out: |
| mwl8k_fw_unlock(hw); |
| |
| return rc; |
| } |
| |
| static void |
| mwl8k_bss_info_changed_sta(struct ieee80211_hw *hw, struct ieee80211_vif *vif, |
| struct ieee80211_bss_conf *info, u32 changed) |
| { |
| struct mwl8k_priv *priv = hw->priv; |
| u32 ap_legacy_rates = 0; |
| u8 ap_mcs_rates[16]; |
| int rc; |
| |
| if (mwl8k_fw_lock(hw)) |
| return; |
| |
| /* |
| * No need to capture a beacon if we're no longer associated. |
| */ |
| if ((changed & BSS_CHANGED_ASSOC) && !vif->bss_conf.assoc) |
| priv->capture_beacon = false; |
| |
| /* |
| * Get the AP's legacy and MCS rates. |
| */ |
| if (vif->bss_conf.assoc) { |
| struct ieee80211_sta *ap; |
| |
| rcu_read_lock(); |
| |
| ap = ieee80211_find_sta(vif, vif->bss_conf.bssid); |
| if (ap == NULL) { |
| rcu_read_unlock(); |
| goto out; |
| } |
| |
| if (hw->conf.channel->band == IEEE80211_BAND_2GHZ) { |
| ap_legacy_rates = ap->supp_rates[IEEE80211_BAND_2GHZ]; |
| } else { |
| ap_legacy_rates = |
| ap->supp_rates[IEEE80211_BAND_5GHZ] << 5; |
| } |
| memcpy(ap_mcs_rates, ap->ht_cap.mcs.rx_mask, 16); |
| |
| rcu_read_unlock(); |
| } |
| |
| if ((changed & BSS_CHANGED_ASSOC) && vif->bss_conf.assoc) { |
| rc = mwl8k_cmd_set_rate(hw, vif, ap_legacy_rates, ap_mcs_rates); |
| if (rc) |
| goto out; |
| |
| rc = mwl8k_cmd_use_fixed_rate_sta(hw); |
| if (rc) |
| goto out; |
| } |
| |
| if (changed & BSS_CHANGED_ERP_PREAMBLE) { |
| rc = mwl8k_set_radio_preamble(hw, |
| vif->bss_conf.use_short_preamble); |
| if (rc) |
| goto out; |
| } |
| |
| if (changed & BSS_CHANGED_ERP_SLOT) { |
| rc = mwl8k_cmd_set_slot(hw, vif->bss_conf.use_short_slot); |
| if (rc) |
| goto out; |
| } |
| |
| if (vif->bss_conf.assoc && |
| (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_ERP_CTS_PROT | |
| BSS_CHANGED_HT))) { |
| rc = mwl8k_cmd_set_aid(hw, vif, ap_legacy_rates); |
| if (rc) |
| goto out; |
| } |
| |
| if (vif->bss_conf.assoc && |
| (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INT))) { |
| /* |
| * Finalize the join. Tell rx handler to process |
| * next beacon from our BSSID. |
| */ |
| memcpy(priv->capture_bssid, vif->bss_conf.bssid, ETH_ALEN); |
| priv->capture_beacon = true; |
| } |
| |
| out: |
| mwl8k_fw_unlock(hw); |
| } |
| |
| static void |
| mwl8k_bss_info_changed_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif, |
| struct ieee80211_bss_conf *info, u32 changed) |
| { |
| int rc; |
| |
| if (mwl8k_fw_lock(hw)) |
| return; |
| |
| if (changed & BSS_CHANGED_ERP_PREAMBLE) { |
| rc = mwl8k_set_radio_preamble(hw, |
| vif->bss_conf.use_short_preamble); |
| if (rc) |
| goto out; |
| } |
| |
| if (changed & BSS_CHANGED_BASIC_RATES) { |
| int idx; |
| int rate; |
| |
| /* |
| * Use lowest supported basic rate for multicasts |
| * and management frames (such as probe responses -- |
| * beacons will always go out at 1 Mb/s). |
| */ |
| idx = ffs(vif->bss_conf.basic_rates); |
| if (idx) |
| idx--; |
| |
| if (hw->conf.channel->band == IEEE80211_BAND_2GHZ) |
| rate = mwl8k_rates_24[idx].hw_value; |
| else |
| rate = mwl8k_rates_50[idx].hw_value; |
| |
| mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate); |
| } |
| |
| if (changed & (BSS_CHANGED_BEACON_INT | BSS_CHANGED_BEACON)) { |
| struct sk_buff *skb; |
| |
| skb = ieee80211_beacon_get(hw, vif); |
| if (skb != NULL) { |
| mwl8k_cmd_set_beacon(hw, vif, skb->data, skb->len); |
| kfree_skb(skb); |
| } |
| } |
| |
| if (changed & BSS_CHANGED_BEACON_ENABLED) |
| mwl8k_cmd_bss_start(hw, vif, info->enable_beacon); |
| |
| out: |
| mwl8k_fw_unlock(hw); |
| } |
| |
| static void |
| mwl8k_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif, |
| struct ieee80211_bss_conf *info, u32 changed) |
| { |
| struct mwl8k_priv *priv = hw->priv; |
| |
| if (!priv->ap_fw) |
| mwl8k_bss_info_changed_sta(hw, vif, info, changed); |
| else |
| mwl8k_bss_info_changed_ap(hw, vif, info, changed); |
| } |
| |
| static u64 mwl8k_prepare_multicast(struct ieee80211_hw *hw, |
| struct netdev_hw_addr_list *mc_list) |
| { |
| struct mwl8k_cmd_pkt *cmd; |
| |
| /* |
| * Synthesize and return a command packet that programs the |
| * hardware multicast address filter. At this point we don't |
| * know whether FIF_ALLMULTI is being requested, but if it is, |
| * we'll end up throwing this packet away and creating a new |
| * one in mwl8k_configure_filter(). |
| */ |
| cmd = __mwl8k_cmd_mac_multicast_adr(hw, 0, mc_list); |
| |
| return (unsigned long)cmd; |
| } |
| |
| static int |
| mwl8k_configure_filter_sniffer(struct ieee80211_hw *hw, |
| unsigned int changed_flags, |
| unsigned int *total_flags) |
| { |
| struct mwl8k_priv *priv = hw->priv; |
| |
| /* |
| * Hardware sniffer mode is mutually exclusive with STA |
| * operation, so refuse to enable sniffer mode if a STA |
| * interface is active. |
| */ |
| if (!list_empty(&priv->vif_list)) { |
| if (net_ratelimit()) |
| wiphy_info(hw->wiphy, |
| "not enabling sniffer mode because STA interface is active\n"); |
| return 0; |
| } |
| |
| if (!priv->sniffer_enabled) { |
| if (mwl8k_cmd_enable_sniffer(hw, 1)) |
| return 0; |
| priv->sniffer_enabled = true; |
| } |
| |
| *total_flags &= FIF_PROMISC_IN_BSS | FIF_ALLMULTI | |
| FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL | |
| FIF_OTHER_BSS; |
| |
| return 1; |
| } |
| |
| static struct mwl8k_vif *mwl8k_first_vif(struct mwl8k_priv *priv) |
| { |
| if (!list_empty(&priv->vif_list)) |
| return list_entry(priv->vif_list.next, struct mwl8k_vif, list); |
| |
| return NULL; |
| } |
| |
| static void mwl8k_configure_filter(struct ieee80211_hw *hw, |
| unsigned int changed_flags, |
| unsigned int *total_flags, |
| u64 multicast) |
| { |
| struct mwl8k_priv *priv = hw->priv; |
| struct mwl8k_cmd_pkt *cmd = (void *)(unsigned long)multicast; |
| |
| /* |
| * AP firmware doesn't allow fine-grained control over |
| * the receive filter. |
| */ |
| if (priv->ap_fw) { |
| *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC; |
| kfree(cmd); |
| return; |
| } |
| |
| /* |
| * Enable hardware sniffer mode if FIF_CONTROL or |
| * FIF_OTHER_BSS is requested. |
| */ |
| if (*total_flags & (FIF_CONTROL | FIF_OTHER_BSS) && |
| mwl8k_configure_filter_sniffer(hw, changed_flags, total_flags)) { |
| kfree(cmd); |
| return; |
| } |
| |
| /* Clear unsupported feature flags */ |
| *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC; |
| |
| if (mwl8k_fw_lock(hw)) { |
| kfree(cmd); |
| return; |
| } |
| |
| if (priv->sniffer_enabled) { |
| mwl8k_cmd_enable_sniffer(hw, 0); |
| priv->sniffer_enabled = false; |
| } |
| |
| if (changed_flags & FIF_BCN_PRBRESP_PROMISC) { |
| if (*total_flags & FIF_BCN_PRBRESP_PROMISC) { |
| /* |
| * Disable the BSS filter. |
| */ |
| mwl8k_cmd_set_pre_scan(hw); |
| } else { |
| struct mwl8k_vif *mwl8k_vif; |
| const u8 *bssid; |
| |
| /* |
| * Enable the BSS filter. |
| * |
| * If there is an active STA interface, use that |
| * interface's BSSID, otherwise use a dummy one |
| * (where the OUI part needs to be nonzero for |
| * the BSSID to be accepted by POST_SCAN). |
| */ |
| mwl8k_vif = mwl8k_first_vif(priv); |
| if (mwl8k_vif != NULL) |
| bssid = mwl8k_vif->vif->bss_conf.bssid; |
| else |
| bssid = "\x01\x00\x00\x00\x00\x00"; |
| |
| mwl8k_cmd_set_post_scan(hw, bssid); |
| } |
| } |
| |
| /* |
| * If FIF_ALLMULTI is being requested, throw away the command |
| * packet that ->prepare_multicast() built and replace it with |
| * a command packet that enables reception of all multicast |
| * packets. |
| */ |
| if (*total_flags & FIF_ALLMULTI) { |
| kfree(cmd); |
| cmd = __mwl8k_cmd_mac_multicast_adr(hw, 1, NULL); |
| } |
| |
| if (cmd != NULL) { |
| mwl8k_post_cmd(hw, cmd); |
| kfree(cmd); |
| } |
| |
| mwl8k_fw_unlock(hw); |
| } |
| |
| static int mwl8k_set_rts_threshold(struct ieee80211_hw *hw, u32 value) |
| { |
| return mwl8k_cmd_set_rts_threshold(hw, value); |
| } |
| |
| static int mwl8k_sta_remove(struct ieee80211_hw *hw, |
| struct ieee80211_vif *vif, |
| struct ieee80211_sta *sta) |
| { |
| struct mwl8k_priv *priv = hw->priv; |
| |
| if (priv->ap_fw) |
| return mwl8k_cmd_set_new_stn_del(hw, vif, sta->addr); |
| else |
| return mwl8k_cmd_update_stadb_del(hw, vif, sta->addr); |
| } |
| |
| static int mwl8k_sta_add(struct ieee80211_hw *hw, |
| struct ieee80211_vif *vif, |
| struct ieee80211_sta *sta) |
| { |
| struct mwl8k_priv *priv = hw->priv; |
| int ret; |
| int i; |
| struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif); |
| struct ieee80211_key_conf *key; |
| |
| if (!priv->ap_fw) { |
| ret = mwl8k_cmd_update_stadb_add(hw, vif, sta); |
| if (ret >= 0) { |
| MWL8K_STA(sta)->peer_id = ret; |
| if (sta->ht_cap.ht_supported) |
| MWL8K_STA(sta)->is_ampdu_allowed = true; |
| ret = 0; |
| } |
| |
| } else { |
| ret = mwl8k_cmd_set_new_stn_add(hw, vif, sta); |
| } |
| |
| for (i = 0; i < NUM_WEP_KEYS; i++) { |
| key = IEEE80211_KEY_CONF(mwl8k_vif->wep_key_conf[i].key); |
| if (mwl8k_vif->wep_key_conf[i].enabled) |
| mwl8k_set_key(hw, SET_KEY, vif, sta, key); |
| } |
| return ret; |
| } |
| |
| static int mwl8k_conf_tx(struct ieee80211_hw *hw, u16 queue, |
| const struct ieee80211_tx_queue_params *params) |
| { |
| struct mwl8k_priv *priv = hw->priv; |
| int rc; |
| |
| rc = mwl8k_fw_lock(hw); |
| if (!rc) { |
| BUG_ON(queue > MWL8K_TX_WMM_QUEUES - 1); |
| memcpy(&priv->wmm_params[queue], params, sizeof(*params)); |
| |
| if (!priv->wmm_enabled) |
| rc = mwl8k_cmd_set_wmm_mode(hw, 1); |
| |
| if (!rc) { |
| int q = MWL8K_TX_WMM_QUEUES - 1 - queue; |
| rc = mwl8k_cmd_set_edca_params(hw, q, |
| params->cw_min, |
| params->cw_max, |
| params->aifs, |
| params->txop); |
| } |
| |
| mwl8k_fw_unlock(hw); |
| } |
| |
| return rc; |
| } |
| |
| static int mwl8k_get_stats(struct ieee80211_hw *hw, |
| struct ieee80211_low_level_stats *stats) |
| { |
| return mwl8k_cmd_get_stat(hw, stats); |
| } |
| |
| static int mwl8k_get_survey(struct ieee80211_hw *hw, int idx, |
| struct survey_info *survey) |
| { |
| struct mwl8k_priv *priv = hw->priv; |
| struct ieee80211_conf *conf = &hw->conf; |
| |
| if (idx != 0) |
| return -ENOENT; |
| |
| survey->channel = conf->channel; |
| survey->filled = SURVEY_INFO_NOISE_DBM; |
| survey->noise = priv->noise; |
| |
| return 0; |
| } |
| |
| #define MAX_AMPDU_ATTEMPTS 5 |
| |
| static int |
| mwl8k_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif, |
| enum ieee80211_ampdu_mlme_action action, |
| struct ieee80211_sta *sta, u16 tid, u16 *ssn, |
| u8 buf_size) |
| { |
| |
| int i, rc = 0; |
| struct mwl8k_priv *priv = hw->priv; |
| struct mwl8k_ampdu_stream *stream; |
| u8 *addr = sta->addr; |
| |
| if (!(hw->flags & IEEE80211_HW_AMPDU_AGGREGATION)) |
| return -ENOTSUPP; |
| |
| spin_lock(&priv->stream_lock); |
| stream = mwl8k_lookup_stream(hw, addr, tid); |
| |
| switch (action) { |
| case IEEE80211_AMPDU_RX_START: |
| case IEEE80211_AMPDU_RX_STOP: |
| break; |
| case IEEE80211_AMPDU_TX_START: |
| /* By the time we get here the hw queues may contain outgoing |
| * packets for this RA/TID that are not part of this BA |
| * session. The hw will assign sequence numbers to these |
| * packets as they go out. So if we query the hw for its next |
| * sequence number and use that for the SSN here, it may end up |
| * being wrong, which will lead to sequence number mismatch at |
| * the recipient. To avoid this, we reset the sequence number |
| * to O for the first MPDU in this BA stream. |
| */ |
| *ssn = 0; |
| if (stream == NULL) { |
| /* This means that somebody outside this driver called |
| * ieee80211_start_tx_ba_session. This is unexpected |
| * because we do our own rate control. Just warn and |
| * move on. |
| */ |
| wiphy_warn(hw->wiphy, "Unexpected call to %s. " |
| "Proceeding anyway.\n", __func__); |
| stream = mwl8k_add_stream(hw, sta, tid); |
| } |
| if (stream == NULL) { |
| wiphy_debug(hw->wiphy, "no free AMPDU streams\n"); |
| rc = -EBUSY; |
| break; |
| } |
| stream->state = AMPDU_STREAM_IN_PROGRESS; |
| |
| /* Release the lock before we do the time consuming stuff */ |
| spin_unlock(&priv->stream_lock); |
| for (i = 0; i < MAX_AMPDU_ATTEMPTS; i++) { |
| rc = mwl8k_check_ba(hw, stream); |
| |
| if (!rc) |
| break; |
| /* |
| * HW queues take time to be flushed, give them |
| * sufficient time |
| */ |
| |
| msleep(1000); |
| } |
| spin_lock(&priv->stream_lock); |
| if (rc) { |
| wiphy_err(hw->wiphy, "Stream for tid %d busy after %d" |
| " attempts\n", tid, MAX_AMPDU_ATTEMPTS); |
| mwl8k_remove_stream(hw, stream); |
| rc = -EBUSY; |
| break; |
| } |
| ieee80211_start_tx_ba_cb_irqsafe(vif, addr, tid); |
| break; |
| case IEEE80211_AMPDU_TX_STOP: |
| if (stream == NULL) |
| break; |
| if (stream->state == AMPDU_STREAM_ACTIVE) { |
| spin_unlock(&priv->stream_lock); |
| mwl8k_destroy_ba(hw, stream); |
| spin_lock(&priv->stream_lock); |
| } |
| mwl8k_remove_stream(hw, stream); |
| ieee80211_stop_tx_ba_cb_irqsafe(vif, addr, tid); |
| break; |
| case IEEE80211_AMPDU_TX_OPERATIONAL: |
| BUG_ON(stream == NULL); |
| BUG_ON(stream->state != AMPDU_STREAM_IN_PROGRESS); |
| spin_unlock(&priv->stream_lock); |
| rc = mwl8k_create_ba(hw, stream, buf_size); |
| spin_lock(&priv->stream_lock); |
| if (!rc) |
| stream->state = AMPDU_STREAM_ACTIVE; |
| else { |
| spin_unlock(&priv->stream_lock); |
| mwl8k_destroy_ba(hw, stream); |
| spin_lock(&priv->stream_lock); |
| wiphy_debug(hw->wiphy, |
| "Failed adding stream for sta %pM tid %d\n", |
| addr, tid); |
| mwl8k_remove_stream(hw, stream); |
| } |
| break; |
| |
| default: |
| rc = -ENOTSUPP; |
| } |
| |
| spin_unlock(&priv->stream_lock); |
| return rc; |
| } |
| |
| static const struct ieee80211_ops mwl8k_ops = { |
| .tx = mwl8k_tx, |
| .start = mwl8k_start, |
| .stop = mwl8k_stop, |
| .add_interface = mwl8k_add_interface, |
| .remove_interface = mwl8k_remove_interface, |
| .config = mwl8k_config, |
| .bss_info_changed = mwl8k_bss_info_changed, |
| .prepare_multicast = mwl8k_prepare_multicast, |
| .configure_filter = mwl8k_configure_filter, |
| .set_key = mwl8k_set_key, |
| .set_rts_threshold = mwl8k_set_rts_threshold, |
| .sta_add = mwl8k_sta_add, |
| .sta_remove = mwl8k_sta_remove, |
| .conf_tx = mwl8k_conf_tx, |
| .get_stats = mwl8k_get_stats, |
| .get_survey = mwl8k_get_survey, |
| .ampdu_action = mwl8k_ampdu_action, |
| }; |
| |
| static void mwl8k_finalize_join_worker(struct work_struct *work) |
| { |
| struct mwl8k_priv *priv = |
| container_of(work, struct mwl8k_priv, finalize_join_worker); |
| struct sk_buff *skb = priv->beacon_skb; |
| struct ieee80211_mgmt *mgmt = (void *)skb->data; |
| int len = skb->len - offsetof(struct ieee80211_mgmt, u.beacon.variable); |
| const u8 *tim = cfg80211_find_ie(WLAN_EID_TIM, |
| mgmt->u.beacon.variable, len); |
| int dtim_period = 1; |
| |
| if (tim && tim[1] >= 2) |
| dtim_period = tim[3]; |
| |
| mwl8k_cmd_finalize_join(priv->hw, skb->data, skb->len, dtim_period); |
| |
| dev_kfree_skb(skb); |
| priv->beacon_skb = NULL; |
| } |
| |
| enum { |
| MWL8363 = 0, |
| MWL8687, |
| MWL8366, |
| }; |
| |
| #define MWL8K_8366_AP_FW_API 2 |
| #define _MWL8K_8366_AP_FW(api) "mwl8k/fmimage_8366_ap-" #api ".fw" |
| #define MWL8K_8366_AP_FW(api) _MWL8K_8366_AP_FW(api) |
| |
| static struct mwl8k_device_info mwl8k_info_tbl[] __devinitdata = { |
| [MWL8363] = { |
| .part_name = "88w8363", |
| .helper_image = "mwl8k/helper_8363.fw", |
| .fw_image_sta = "mwl8k/fmimage_8363.fw", |
| }, |
| [MWL8687] = { |
| .part_name = "88w8687", |
| .helper_image = "mwl8k/helper_8687.fw", |
| .fw_image_sta = "mwl8k/fmimage_8687.fw", |
| }, |
| [MWL8366] = { |
| .part_name = "88w8366", |
| .helper_image = "mwl8k/helper_8366.fw", |
| .fw_image_sta = "mwl8k/fmimage_8366.fw", |
| .fw_image_ap = MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API), |
| .fw_api_ap = MWL8K_8366_AP_FW_API, |
| .ap_rxd_ops = &rxd_8366_ap_ops, |
| }, |
| }; |
| |
| MODULE_FIRMWARE("mwl8k/helper_8363.fw"); |
| MODULE_FIRMWARE("mwl8k/fmimage_8363.fw"); |
| MODULE_FIRMWARE("mwl8k/helper_8687.fw"); |
| MODULE_FIRMWARE("mwl8k/fmimage_8687.fw"); |
| MODULE_FIRMWARE("mwl8k/helper_8366.fw"); |
| MODULE_FIRMWARE("mwl8k/fmimage_8366.fw"); |
| MODULE_FIRMWARE(MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API)); |
| |
| static DEFINE_PCI_DEVICE_TABLE(mwl8k_pci_id_table) = { |
| { PCI_VDEVICE(MARVELL, 0x2a0a), .driver_data = MWL8363, }, |
| { PCI_VDEVICE(MARVELL, 0x2a0c), .driver_data = MWL8363, }, |
| { PCI_VDEVICE(MARVELL, 0x2a24), .driver_data = MWL8363, }, |
| { PCI_VDEVICE(MARVELL, 0x2a2b), .driver_data = MWL8687, }, |
| { PCI_VDEVICE(MARVELL, 0x2a30), .driver_data = MWL8687, }, |
| { PCI_VDEVICE(MARVELL, 0x2a40), .driver_data = MWL8366, }, |
| { PCI_VDEVICE(MARVELL, 0x2a43), .driver_data = MWL8366, }, |
| { }, |
| }; |
| MODULE_DEVICE_TABLE(pci, mwl8k_pci_id_table); |
| |
| static int mwl8k_request_alt_fw(struct mwl8k_priv *priv) |
| { |
| int rc; |
| printk(KERN_ERR "%s: Error requesting preferred fw %s.\n" |
| "Trying alternative firmware %s\n", pci_name(priv->pdev), |
| priv->fw_pref, priv->fw_alt); |
| rc = mwl8k_request_fw(priv, priv->fw_alt, &priv->fw_ucode, true); |
| if (rc) { |
| printk(KERN_ERR "%s: Error requesting alt fw %s\n", |
| pci_name(priv->pdev), priv->fw_alt); |
| return rc; |
| } |
| return 0; |
| } |
| |
| static int mwl8k_firmware_load_success(struct mwl8k_priv *priv); |
| static void mwl8k_fw_state_machine(const struct firmware *fw, void *context) |
| { |
| struct mwl8k_priv *priv = context; |
| struct mwl8k_device_info *di = priv->device_info; |
| int rc; |
| |
| switch (priv->fw_state) { |
| case FW_STATE_INIT: |
| if (!fw) { |
| printk(KERN_ERR "%s: Error requesting helper fw %s\n", |
| pci_name(priv->pdev), di->helper_image); |
| goto fail; |
| } |
| priv->fw_helper = fw; |
| rc = mwl8k_request_fw(priv, priv->fw_pref, &priv->fw_ucode, |
| true); |
| if (rc && priv->fw_alt) { |
| rc = mwl8k_request_alt_fw(priv); |
| if (rc) |
| goto fail; |
| priv->fw_state = FW_STATE_LOADING_ALT; |
| } else if (rc) |
| goto fail; |
| else |
| priv->fw_state = FW_STATE_LOADING_PREF; |
| break; |
| |
| case FW_STATE_LOADING_PREF: |
| if (!fw) { |
| if (priv->fw_alt) { |
| rc = mwl8k_request_alt_fw(priv); |
| if (rc) |
| goto fail; |
| priv->fw_state = FW_STATE_LOADING_ALT; |
| } else |
| goto fail; |
| } else { |
| priv->fw_ucode = fw; |
| rc = mwl8k_firmware_load_success(priv); |
| if (rc) |
| goto fail; |
| else |
| complete(&priv->firmware_loading_complete); |
| } |
| break; |
| |
| case FW_STATE_LOADING_ALT: |
| if (!fw) { |
| printk(KERN_ERR "%s: Error requesting alt fw %s\n", |
| pci_name(priv->pdev), di->helper_image); |
| goto fail; |
| } |
| priv->fw_ucode = fw; |
| rc = mwl8k_firmware_load_success(priv); |
| if (rc) |
| goto fail; |
| else |
| complete(&priv->firmware_loading_complete); |
| break; |
| |
| default: |
| printk(KERN_ERR "%s: Unexpected firmware loading state: %d\n", |
| MWL8K_NAME, priv->fw_state); |
| BUG_ON(1); |
| } |
| |
| return; |
| |
| fail: |
| priv->fw_state = FW_STATE_ERROR; |
| complete(&priv->firmware_loading_complete); |
| device_release_driver(&priv->pdev->dev); |
| mwl8k_release_firmware(priv); |
| } |
| |
| static int mwl8k_init_firmware(struct ieee80211_hw *hw, char *fw_image, |
| bool nowait) |
| { |
| struct mwl8k_priv *priv = hw->priv; |
| int rc; |
| |
| /* Reset firmware and hardware */ |
| mwl8k_hw_reset(priv); |
| |
| /* Ask userland hotplug daemon for the device firmware */ |
| rc = mwl8k_request_firmware(priv, fw_image, nowait); |
| if (rc) { |
| wiphy_err(hw->wiphy, "Firmware files not found\n"); |
| return rc; |
| } |
| |
| if (nowait) |
| return rc; |
| |
| /* Load firmware into hardware */ |
| rc = mwl8k_load_firmware(hw); |
| if (rc) |
| wiphy_err(hw->wiphy, "Cannot start firmware\n"); |
| |
| /* Reclaim memory once firmware is successfully loaded */ |
| mwl8k_release_firmware(priv); |
| |
| return rc; |
| } |
| |
| static int mwl8k_init_txqs(struct ieee80211_hw *hw) |
| { |
| struct mwl8k_priv *priv = hw->priv; |
| int rc = 0; |
| int i; |
| |
| for (i = 0; i < mwl8k_tx_queues(priv); i++) { |
| rc = mwl8k_txq_init(hw, i); |
| if (rc) |
| break; |
| if (priv->ap_fw) |
| iowrite32(priv->txq[i].txd_dma, |
| priv->sram + priv->txq_offset[i]); |
| } |
| return rc; |
| } |
| |
| /* initialize hw after successfully loading a firmware image */ |
| static int mwl8k_probe_hw(struct ieee80211_hw *hw) |
| { |
| struct mwl8k_priv *priv = hw->priv; |
| int rc = 0; |
| int i; |
| |
| if (priv->ap_fw) { |
| priv->rxd_ops = priv->device_info->ap_rxd_ops; |
| if (priv->rxd_ops == NULL) { |
| wiphy_err(hw->wiphy, |
| "Driver does not have AP firmware image support for this hardware\n"); |
| goto err_stop_firmware; |
| } |
| } else { |
| priv->rxd_ops = &rxd_sta_ops; |
| } |
| |
| priv->sniffer_enabled = false; |
| priv->wmm_enabled = false; |
| priv->pending_tx_pkts = 0; |
| |
| rc = mwl8k_rxq_init(hw, 0); |
| if (rc) |
| goto err_stop_firmware; |
| rxq_refill(hw, 0, INT_MAX); |
| |
| /* For the sta firmware, we need to know the dma addresses of tx queues |
| * before sending MWL8K_CMD_GET_HW_SPEC. So we must initialize them |
| * prior to issuing this command. But for the AP case, we learn the |
| * total number of queues from the result CMD_GET_HW_SPEC, so for this |
| * case we must initialize the tx queues after. |
| */ |
| priv->num_ampdu_queues = 0; |
| if (!priv->ap_fw) { |
| rc = mwl8k_init_txqs(hw); |
| if (rc) |
| goto err_free_queues; |
| } |
| |
| iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS); |
| iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); |
| iowrite32(MWL8K_A2H_INT_TX_DONE|MWL8K_A2H_INT_RX_READY| |
| MWL8K_A2H_INT_BA_WATCHDOG, |
| priv->regs + MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL); |
| iowrite32(MWL8K_A2H_INT_OPC_DONE, |
| priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK); |
| |
| rc = request_irq(priv->pdev->irq, mwl8k_interrupt, |
| IRQF_SHARED, MWL8K_NAME, hw); |
| if (rc) { |
| wiphy_err(hw->wiphy, "failed to register IRQ handler\n"); |
| goto err_free_queues; |
| } |
| |
| memset(priv->ampdu, 0, sizeof(priv->ampdu)); |
| |
| /* |
| * Temporarily enable interrupts. Initial firmware host |
| * commands use interrupts and avoid polling. Disable |
| * interrupts when done. |
| */ |
| iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); |
| |
| /* Get config data, mac addrs etc */ |
| if (priv->ap_fw) { |
| rc = mwl8k_cmd_get_hw_spec_ap(hw); |
| if (!rc) |
| rc = mwl8k_init_txqs(hw); |
| if (!rc) |
| rc = mwl8k_cmd_set_hw_spec(hw); |
| } else { |
| rc = mwl8k_cmd_get_hw_spec_sta(hw); |
| } |
| if (rc) { |
| wiphy_err(hw->wiphy, "Cannot initialise firmware\n"); |
| goto err_free_irq; |
| } |
| |
| /* Turn radio off */ |
| rc = mwl8k_cmd_radio_disable(hw); |
| if (rc) { |
| wiphy_err(hw->wiphy, "Cannot disable\n"); |
| goto err_free_irq; |
| } |
| |
| /* Clear MAC address */ |
| rc = mwl8k_cmd_set_mac_addr(hw, NULL, "\x00\x00\x00\x00\x00\x00"); |
| if (rc) { |
| wiphy_err(hw->wiphy, "Cannot clear MAC address\n"); |
| goto err_free_irq; |
| } |
| |
| /* Disable interrupts */ |
| iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); |
| free_irq(priv->pdev->irq, hw); |
| |
| wiphy_info(hw->wiphy, "%s v%d, %pm, %s firmware %u.%u.%u.%u\n", |
| priv->device_info->part_name, |
| priv->hw_rev, hw->wiphy->perm_addr, |
| priv->ap_fw ? "AP" : "STA", |
| (priv->fw_rev >> 24) & 0xff, (priv->fw_rev >> 16) & 0xff, |
| (priv->fw_rev >> 8) & 0xff, priv->fw_rev & 0xff); |
| |
| return 0; |
| |
| err_free_irq: |
| iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); |
| free_irq(priv->pdev->irq, hw); |
| |
| err_free_queues: |
| for (i = 0; i < mwl8k_tx_queues(priv); i++) |
| mwl8k_txq_deinit(hw, i); |
| mwl8k_rxq_deinit(hw, 0); |
| |
| err_stop_firmware: |
| mwl8k_hw_reset(priv); |
| |
| return rc; |
| } |
| |
| /* |
| * invoke mwl8k_reload_firmware to change the firmware image after the device |
| * has already been registered |
| */ |
| static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image) |
| { |
| int i, rc = 0; |
| struct mwl8k_priv *priv = hw->priv; |
| |
| mwl8k_stop(hw); |
| mwl8k_rxq_deinit(hw, 0); |
| |
| for (i = 0; i < mwl8k_tx_queues(priv); i++) |
| mwl8k_txq_deinit(hw, i); |
| |
| rc = mwl8k_init_firmware(hw, fw_image, false); |
| if (rc) |
| goto fail; |
| |
| rc = mwl8k_probe_hw(hw); |
| if (rc) |
| goto fail; |
| |
| rc = mwl8k_start(hw); |
| if (rc) |
| goto fail; |
| |
| rc = mwl8k_config(hw, ~0); |
| if (rc) |
| goto fail; |
| |
| for (i = 0; i < MWL8K_TX_WMM_QUEUES; i++) { |
| rc = mwl8k_conf_tx(hw, i, &priv->wmm_params[i]); |
| if (rc) |
| goto fail; |
| } |
| |
| return rc; |
| |
| fail: |
| printk(KERN_WARNING "mwl8k: Failed to reload firmware image.\n"); |
| return rc; |
| } |
| |
| static int mwl8k_firmware_load_success(struct mwl8k_priv *priv) |
| { |
| struct ieee80211_hw *hw = priv->hw; |
| int i, rc; |
| |
| rc = mwl8k_load_firmware(hw); |
| mwl8k_release_firmware(priv); |
| if (rc) { |
| wiphy_err(hw->wiphy, "Cannot start firmware\n"); |
| return rc; |
| } |
| |
| /* |
| * Extra headroom is the size of the required DMA header |
| * minus the size of the smallest 802.11 frame (CTS frame). |
| */ |
| hw->extra_tx_headroom = |
| sizeof(struct mwl8k_dma_data) - sizeof(struct ieee80211_cts); |
| |
| hw->channel_change_time = 10; |
| |
| hw->queues = MWL8K_TX_WMM_QUEUES; |
| |
| /* Set rssi values to dBm */ |
| hw->flags |= IEEE80211_HW_SIGNAL_DBM | IEEE80211_HW_HAS_RATE_CONTROL; |
| hw->vif_data_size = sizeof(struct mwl8k_vif); |
| hw->sta_data_size = sizeof(struct mwl8k_sta); |
| |
| priv->macids_used = 0; |
| INIT_LIST_HEAD(&priv->vif_list); |
| |
| /* Set default radio state and preamble */ |
| priv->radio_on = 0; |
| priv->radio_short_preamble = 0; |
| |
| /* Finalize join worker */ |
| INIT_WORK(&priv->finalize_join_worker, mwl8k_finalize_join_worker); |
| /* Handle watchdog ba events */ |
| INIT_WORK(&priv->watchdog_ba_handle, mwl8k_watchdog_ba_events); |
| |
| /* TX reclaim and RX tasklets. */ |
| tasklet_init(&priv->poll_tx_task, mwl8k_tx_poll, (unsigned long)hw); |
| tasklet_disable(&priv->poll_tx_task); |
| tasklet_init(&priv->poll_rx_task, mwl8k_rx_poll, (unsigned long)hw); |
| tasklet_disable(&priv->poll_rx_task); |
| |
| /* Power management cookie */ |
| priv->cookie = pci_alloc_consistent(priv->pdev, 4, &priv->cookie_dma); |
| if (priv->cookie == NULL) |
| return -ENOMEM; |
| |
| mutex_init(&priv->fw_mutex); |
| priv->fw_mutex_owner = NULL; |
| priv->fw_mutex_depth = 0; |
| priv->hostcmd_wait = NULL; |
| |
| spin_lock_init(&priv->tx_lock); |
| |
| spin_lock_init(&priv->stream_lock); |
| |
| priv->tx_wait = NULL; |
| |
| rc = mwl8k_probe_hw(hw); |
| if (rc) |
| goto err_free_cookie; |
| |
| hw->wiphy->interface_modes = 0; |
| if (priv->ap_macids_supported || priv->device_info->fw_image_ap) |
| hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP); |
| if (priv->sta_macids_supported || priv->device_info->fw_image_sta) |
| hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION); |
| |
| rc = ieee80211_register_hw(hw); |
| if (rc) { |
| wiphy_err(hw->wiphy, "Cannot register device\n"); |
| goto err_unprobe_hw; |
| } |
| |
| return 0; |
| |
| err_unprobe_hw: |
| for (i = 0; i < mwl8k_tx_queues(priv); i++) |
| mwl8k_txq_deinit(hw, i); |
| mwl8k_rxq_deinit(hw, 0); |
| |
| err_free_cookie: |
| if (priv->cookie != NULL) |
| pci_free_consistent(priv->pdev, 4, |
| priv->cookie, priv->cookie_dma); |
| |
| return rc; |
| } |
| static int __devinit mwl8k_probe(struct pci_dev *pdev, |
| const struct pci_device_id *id) |
| { |
| static int printed_version; |
| struct ieee80211_hw *hw; |
| struct mwl8k_priv *priv; |
| struct mwl8k_device_info *di; |
| int rc; |
| |
| if (!printed_version) { |
| printk(KERN_INFO "%s version %s\n", MWL8K_DESC, MWL8K_VERSION); |
| printed_version = 1; |
| } |
| |
| |
| rc = pci_enable_device(pdev); |
| if (rc) { |
| printk(KERN_ERR "%s: Cannot enable new PCI device\n", |
| MWL8K_NAME); |
| return rc; |
| } |
| |
| rc = pci_request_regions(pdev, MWL8K_NAME); |
| if (rc) { |
| printk(KERN_ERR "%s: Cannot obtain PCI resources\n", |
| MWL8K_NAME); |
| goto err_disable_device; |
| } |
| |
| pci_set_master(pdev); |
| |
| |
| hw = ieee80211_alloc_hw(sizeof(*priv), &mwl8k_ops); |
| if (hw == NULL) { |
| printk(KERN_ERR "%s: ieee80211 alloc failed\n", MWL8K_NAME); |
| rc = -ENOMEM; |
| goto err_free_reg; |
| } |
| |
| SET_IEEE80211_DEV(hw, &pdev->dev); |
| pci_set_drvdata(pdev, hw); |
| |
| priv = hw->priv; |
| priv->hw = hw; |
| priv->pdev = pdev; |
| priv->device_info = &mwl8k_info_tbl[id->driver_data]; |
| |
| |
| priv->sram = pci_iomap(pdev, 0, 0x10000); |
| if (priv->sram == NULL) { |
| wiphy_err(hw->wiphy, "Cannot map device SRAM\n"); |
| goto err_iounmap; |
| } |
| |
| /* |
| * If BAR0 is a 32 bit BAR, the register BAR will be BAR1. |
| * If BAR0 is a 64 bit BAR, the register BAR will be BAR2. |
| */ |
| priv->regs = pci_iomap(pdev, 1, 0x10000); |
| if (priv->regs == NULL) { |
| priv->regs = pci_iomap(pdev, 2, 0x10000); |
| if (priv->regs == NULL) { |
| wiphy_err(hw->wiphy, "Cannot map device registers\n"); |
| goto err_iounmap; |
| } |
| } |
| |
| /* |
| * Choose the initial fw image depending on user input. If a second |
| * image is available, make it the alternative image that will be |
| * loaded if the first one fails. |
| */ |
| init_completion(&priv->firmware_loading_complete); |
| di = priv->device_info; |
| if (ap_mode_default && di->fw_image_ap) { |
| priv->fw_pref = di->fw_image_ap; |
| priv->fw_alt = di->fw_image_sta; |
| } else if (!ap_mode_default && di->fw_image_sta) { |
| priv->fw_pref = di->fw_image_sta; |
| priv->fw_alt = di->fw_image_ap; |
| } else if (ap_mode_default && !di->fw_image_ap && di->fw_image_sta) { |
| printk(KERN_WARNING "AP fw is unavailable. Using STA fw."); |
| priv->fw_pref = di->fw_image_sta; |
| } else if (!ap_mode_default && !di->fw_image_sta && di->fw_image_ap) { |
| printk(KERN_WARNING "STA fw is unavailable. Using AP fw."); |
| priv->fw_pref = di->fw_image_ap; |
| } |
| rc = mwl8k_init_firmware(hw, priv->fw_pref, true); |
| if (rc) |
| goto err_stop_firmware; |
| return rc; |
| |
| err_stop_firmware: |
| mwl8k_hw_reset(priv); |
| |
| err_iounmap: |
| if (priv->regs != NULL) |
| pci_iounmap(pdev, priv->regs); |
| |
| if (priv->sram != NULL) |
| pci_iounmap(pdev, priv->sram); |
| |
| pci_set_drvdata(pdev, NULL); |
| ieee80211_free_hw(hw); |
| |
| err_free_reg: |
| pci_release_regions(pdev); |
| |
| err_disable_device: |
| pci_disable_device(pdev); |
| |
| return rc; |
| } |
| |
| static void __devexit mwl8k_shutdown(struct pci_dev *pdev) |
| { |
| printk(KERN_ERR "===>%s(%u)\n", __func__, __LINE__); |
| } |
| |
| static void __devexit mwl8k_remove(struct pci_dev *pdev) |
| { |
| struct ieee80211_hw *hw = pci_get_drvdata(pdev); |
| struct mwl8k_priv *priv; |
| int i; |
| |
| if (hw == NULL) |
| return; |
| priv = hw->priv; |
| |
| wait_for_completion(&priv->firmware_loading_complete); |
| |
| if (priv->fw_state == FW_STATE_ERROR) { |
| mwl8k_hw_reset(priv); |
| goto unmap; |
| } |
| |
| ieee80211_stop_queues(hw); |
| |
| ieee80211_unregister_hw(hw); |
| |
| /* Remove TX reclaim and RX tasklets. */ |
| tasklet_kill(&priv->poll_tx_task); |
| tasklet_kill(&priv->poll_rx_task); |
| |
| /* Stop hardware */ |
| mwl8k_hw_reset(priv); |
| |
| /* Return all skbs to mac80211 */ |
| for (i = 0; i < mwl8k_tx_queues(priv); i++) |
| mwl8k_txq_reclaim(hw, i, INT_MAX, 1); |
| |
| for (i = 0; i < mwl8k_tx_queues(priv); i++) |
| mwl8k_txq_deinit(hw, i); |
| |
| mwl8k_rxq_deinit(hw, 0); |
| |
| pci_free_consistent(priv->pdev, 4, priv->cookie, priv->cookie_dma); |
| |
| unmap: |
| pci_iounmap(pdev, priv->regs); |
| pci_iounmap(pdev, priv->sram); |
| pci_set_drvdata(pdev, NULL); |
| ieee80211_free_hw(hw); |
| pci_release_regions(pdev); |
| pci_disable_device(pdev); |
| } |
| |
| static struct pci_driver mwl8k_driver = { |
| .name = MWL8K_NAME, |
| .id_table = mwl8k_pci_id_table, |
| .probe = mwl8k_probe, |
| .remove = __devexit_p(mwl8k_remove), |
| .shutdown = __devexit_p(mwl8k_shutdown), |
| }; |
| |
| static int __init mwl8k_init(void) |
| { |
| return pci_register_driver(&mwl8k_driver); |
| } |
| |
| static void __exit mwl8k_exit(void) |
| { |
| pci_unregister_driver(&mwl8k_driver); |
| } |
| |
| module_init(mwl8k_init); |
| module_exit(mwl8k_exit); |
| |
| MODULE_DESCRIPTION(MWL8K_DESC); |
| MODULE_VERSION(MWL8K_VERSION); |
| MODULE_AUTHOR("Lennert Buytenhek <buytenh@marvell.com>"); |
| MODULE_LICENSE("GPL"); |