On Tue, 2008-12-16 at 03:55 +0100, Lennert Buytenhek wrote:
> Hi all,
>
> Attached is an initial version of the mwl8k driver for Marvell 88w8xxx
> PCI/PCIe wireless parts (against 2.6.27.1). This version was written
> and tested against the 88w8687 (802.11b/g), but it shouldn't be hard to
> extend the support to other parts in the 8xxx series, since the firmware
> interface is very similar between parts.
>
> There's an occasional timeout warning with mwl8k_stop(), and hardware
> crypto is still a work-in-progress, but other than that it looks pretty
> stable.
>
> Feedback appreciated!
Oooh, thanks for the Christmas present. Just in time for the holidays.
Is there a git repo somewhere that we could all base off of, so we don't
have to deal with patches to patches to patches until it gets into
wireless-testing?
dan
>
> thanks,
> Lennert
>
>
>
> commit d16529c8e5e2bf75e1702dea42fbdc2723d4c3f0
> Author: Lennert Buytenhek <buytenh@xxxxxxxxxxx>
> Date: Mon Dec 15 18:35:37 2008 +0100
>
> mwl8k: Marvell TOPDOG wireless driver
>
> Add a driver for Marvell 88w8xxx TOPDOG PCI/PCIe wireless parts.
> This initial version supports the 88w8687 802.11b/g PCIe part on
> channels 1-11, and only STA mode is currently implemented.
>
> Signed-off-by: Lennert Buytenhek <buytenh@xxxxxxxxxxx>
>
> diff --git a/drivers/net/wireless/Kconfig b/drivers/net/wireless/Kconfig
> index 9931b5a..f3906ad 100644
> --- a/drivers/net/wireless/Kconfig
> +++ b/drivers/net/wireless/Kconfig
> @@ -693,6 +693,15 @@ config MAC80211_HWSIM
> To compile this driver as a module, choose M here: the module will be
> called mac80211_hwsim. If unsure, say N.
>
> +config MWL8K
> + tristate "Marvell 88W8xxx PCI/PCIe Wireless support"
> + depends on MAC80211 && PCI && WLAN_80211 && EXPERIMENTAL
> + ---help---
> + This driver supports Marvell TOPDOG 802.11 wireless cards.
> +
> + To compile this driver as a module, choose M here: the module
> + will be called mwl8k. If unsure, say N.
> +
> source "drivers/net/wireless/p54/Kconfig"
> source "drivers/net/wireless/ath5k/Kconfig"
> source "drivers/net/wireless/ath9k/Kconfig"
> diff --git a/drivers/net/wireless/Makefile b/drivers/net/wireless/Makefile
> index 59aa89e..cd87366 100644
> --- a/drivers/net/wireless/Makefile
> +++ b/drivers/net/wireless/Makefile
> @@ -56,6 +56,8 @@ obj-$(CONFIG_RTL8187) += rtl8187.o
>
> obj-$(CONFIG_ADM8211) += adm8211.o
>
> +obj-$(CONFIG_MWL8K) += mwl8k.o
> +
> obj-$(CONFIG_IWLWIFI) += iwlwifi/
> obj-$(CONFIG_RT2X00) += rt2x00/
>
> diff --git a/drivers/net/wireless/mwl8k.c b/drivers/net/wireless/mwl8k.c
> new file mode 100644
> index 0000000..d7f0068
> --- /dev/null
> +++ b/drivers/net/wireless/mwl8k.c
> @@ -0,0 +1,4139 @@
> +/*
> + * drivers/net/wireless/mwl8k.c driver for Marvell TOPDOG 802.11 Wireless cards
> + *
> + * Copyright (C) 2008 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/spinlock.h>
> +#include <linux/list.h>
> +#include <linux/pci.h>
> +#include <linux/delay.h>
> +#include <linux/completion.h>
> +#include <linux/etherdevice.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 "0.9.0"
> +
> +MODULE_DESCRIPTION(MWL8K_DESC);
> +MODULE_VERSION(MWL8K_VERSION);
> +MODULE_AUTHOR("Lennert Buytenhek <buytenh@xxxxxxxxxxx>");
> +MODULE_LICENSE("GPL");
> +
> +#define USE_HW_CRYPTO 0 /* work in progress */
> +
> +static DEFINE_PCI_DEVICE_TABLE(mwl8k_table) = {
> + { PCI_VDEVICE(MARVELL, 0x2a2b) }, /* 88w8687 */
> + { PCI_VDEVICE(MARVELL, 0x2a30) }, /* 88w8687 */
> + { }
> +};
> +MODULE_DEVICE_TABLE(pci, mwl8k_table);
> +
> +#define IEEE80211_ADDR_LEN ETH_ALEN
> +
> +/* 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_PS (1 << 2)
> +#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_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)
> +
> +/* WME stream classes */
> +#define WME_AC_BE 0 /* best effort */
> +#define WME_AC_BK 1 /* background */
> +#define WME_AC_VI 2 /* video */
> +#define WME_AC_VO 3 /* voice */
> +
> +#define MWL8K_RX_QUEUES 1
> +#define MWL8K_TX_QUEUES 4
> +
> +struct mwl8k_rx_queue {
> + int rx_desc_count;
> +
> + /* hw receives here */
> + int rx_head;
> +
> + /* refill descs here */
> + int rx_tail;
> +
> + struct mwl8k_rx_desc *rx_desc_area;
> + dma_addr_t rx_desc_dma;
> + struct sk_buff **rx_skb;
> +};
> +
> +struct mwl8k_skb {
> + /*
> + * The DMA engine requires a modification to the payload.
> + * If the skbuff is shared/cloned, it needs to be unshared.
> + * This method is used to ensure the stack always gets back
> + * the skbuff it sent for transmission.
> + */
> + struct sk_buff *clone;
> + struct sk_buff *skb;
> +};
> +
> +struct mwl8k_tx_queue {
> + /* hw transmits here */
> + int tx_head;
> +
> + /* sw appends here */
> + int tx_tail;
> +
> + struct ieee80211_tx_queue_stats tx_stats;
> + struct mwl8k_tx_desc *tx_desc_area;
> + dma_addr_t tx_desc_dma;
> + struct mwl8k_skb *tx_skb;
> +};
> +
> +/* Pointers to the firmware data and meta information about it. */
> +struct mwl8k_firmware {
> + /* Microcode */
> + struct firmware *ucode;
> +
> + /* Boot helper code */
> + struct firmware *helper;
> +};
> +
> +struct mwl8k_priv {
> + void __iomem *regs;
> + struct ieee80211_hw *hw;
> +
> + struct pci_dev *pdev;
> + u8 name[16];
> + /* firmware access lock */
> + spinlock_t fw_lock;
> +
> + /* firmware files and meta data */
> + struct mwl8k_firmware fw;
> + u32 part_num;
> +
> + /* lock held over TX and TX reap */
> + spinlock_t tx_lock;
> + u32 int_mask;
> +
> + struct ieee80211_vif *vif;
> + struct list_head vif_list;
> +
> + struct ieee80211_channel *current_channel;
> +
> + /* power management status cookie from firmware */
> + u32 *cookie;
> + dma_addr_t cookie_dma;
> +
> + u16 num_mcaddrs;
> + u16 region_code;
> + u8 hw_rev;
> + __le32 fw_rev;
> + u32 wep_enabled;
> +
> + /*
> + * 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_TX_QUEUES];
> +
> + /* PHY parameters */
> + struct ieee80211_supported_band band;
> + struct ieee80211_channel channels[14];
> + struct ieee80211_rate rates[12];
> +
> + /* RF preamble: Short, Long or Auto */
> + u8 radio_preamble;
> + u8 radio_state;
> +
> + /* WMM MODE 1 for enabled; 0 for disabled */
> + bool wmm_mode;
> +
> + /* Set if PHY config is in progress */
> + bool inconfig;
> +
> + /* XXX need to convert this to handle multiple interfaces */
> + bool capture_beacon;
> + u8 capture_bssid[IEEE80211_ADDR_LEN];
> + 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 reclaim TX descriptors and buffers after tx */
> + struct tasklet_struct tx_reclaim_task;
> +
> + /* Work thread to serialize configuration requests */
> + struct workqueue_struct *config_wq;
> + struct completion *hostcmd_wait;
> + struct completion *tx_wait;
> +};
> +
> +/* Per interface specific private data */
> +struct mwl8k_vif {
> + struct list_head node;
> +
> + /* backpointer to parent config block */
> + struct mwl8k_priv *priv;
> +
> + /* BSS config of AP or IBSS from mac80211*/
> + struct ieee80211_bss_conf bss_info;
> +
> + /* BSSID of AP or IBSS */
> + u8 bssid[IEEE80211_ADDR_LEN];
> + u8 mac_addr[IEEE80211_ADDR_LEN];
> +
> + /*
> + * Subset of supported legacy rates.
> + * Intersection of AP and STA supported rates.
> + */
> + struct ieee80211_rate legacy_rates[12];
> +
> + /* number of supported legacy rates */
> + u8 legacy_nrates;
> +
> + /* Number of supported MCS rates. Work in progress */
> + u8 mcs_nrates;
> +
> + /* Index into station database.Returned by update_sta_db call */
> + u8 peer_id;
> +
> + /* Non AMPDU sequence number assigned by driver */
> + u16 seqno;
> +
> + /* Note:There is no channel info,
> + * refer to the master channel info in priv
> + */
> +};
> +
> +#define MWL8K_VIF(_vif) (struct mwl8k_vif *)(&((_vif)->drv_priv))
> +
> +static const struct ieee80211_channel mwl8k_channels[] = {
> + { .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, },
> +};
> +
> +static const struct ieee80211_rate mwl8k_rates[] = {
> + { .bitrate = 10, .hw_value = 2, },
> + { .bitrate = 20, .hw_value = 4, },
> + { .bitrate = 55, .hw_value = 11, },
> + { .bitrate = 60, .hw_value = 12, },
> + { .bitrate = 90, .hw_value = 18, },
> + { .bitrate = 110, .hw_value = 22, },
> + { .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, },
> +};
> +
> +/* Radio settings */
> +#define MWL8K_RADIO_FORCE 0x2
> +#define MWL8K_RADIO_ENABLE 0x1
> +#define MWL8K_RADIO_DISABLE 0x0
> +#define MWL8K_RADIO_AUTO_PREAMBLE 0x0005
> +#define MWL8K_RADIO_SHORT_PREAMBLE 0x0003
> +#define MWL8K_RADIO_LONG_PREAMBLE 0x0001
> +
> +/* WMM */
> +#define MWL8K_WMM_ENABLE 1
> +#define MWL8K_WMM_DISABLE 0
> +
> +#define MWL8K_RADIO_DEFAULT_PREAMBLE MWL8K_RADIO_LONG_PREAMBLE
> +
> +/* Slot time */
> +
> +/* Short Slot: 9us slot time */
> +#define MWL8K_SHORT_SLOTTIME 1
> +
> +/* Long slot: 20us slot time */
> +#define MWL8K_LONG_SLOTTIME 0
> +
> +/* Set of get info from Firmware */
> +#define MWL8K_CMD_SET 0x0001
> +#define MWL8K_CMD_GET 0x0000
> +
> +/* Firmware command codes */
> +#define MWL8K_CMD_CODE_DNLD 0x0001
> +#define MWL8K_CMD_GET_HW_SPEC 0x0003
> +#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_SET_PRE_SCAN 0x0107
> +#define MWL8K_CMD_SET_POST_SCAN 0x0108
> +#define MWL8K_CMD_SET_RF_CHANNEL 0x010A
> +#define MWL8K_CMD_SET_SLOT 0x0114
> +#define MWL8K_CMD_MIMO_CONFIG 0x0125
> +#define MWL8K_CMD_ENABLE_SNIFFER 0x0150
> +#define MWL8K_CMD_SET_WMM_MODE 0x0123
> +#define MWL8K_CMD_SET_EDCA_PARAMS 0x0115
> +#define MWL8K_CMD_SET_FINALIZE_JOIN 0x0111
> +#define MWL8K_CMD_UPDATE_STADB 0x1123
> +#define MWL8K_CMD_SET_RATEADAPT_MODE 0x0203
> +#define MWL8K_CMD_SET_LINKADAPT_MODE 0x0129
> +#define MWL8K_CMD_SET_AID 0x010d
> +#define MWL8K_CMD_SET_RATE 0x0110
> +#define MWL8K_CMD_USE_FIXED_RATE 0x0126
> +#define MWL8K_CMD_RTS_THRESHOLD 0x0113
> +#define MWL8K_CMD_ENCRYPTION 0x1122
> +
> +static const char *mwl8k_cmd_name(u16 cmd, char *buf, int bufsize)
> +{
> +#define MWL8K_CMDNAME(x) case MWL8K_CMD_##x: do {\
> + snprintf(buf, bufsize, "%s", #x);\
> + return buf;\
> + } while (0)
> + switch (cmd & (~0x8000)) {
> + MWL8K_CMDNAME(CODE_DNLD);
> + MWL8K_CMDNAME(GET_HW_SPEC);
> + MWL8K_CMDNAME(MAC_MULTICAST_ADR);
> + MWL8K_CMDNAME(GET_STAT);
> + MWL8K_CMDNAME(RADIO_CONTROL);
> + MWL8K_CMDNAME(RF_TX_POWER);
> + MWL8K_CMDNAME(SET_PRE_SCAN);
> + MWL8K_CMDNAME(SET_POST_SCAN);
> + MWL8K_CMDNAME(SET_RF_CHANNEL);
> + MWL8K_CMDNAME(SET_SLOT);
> + MWL8K_CMDNAME(MIMO_CONFIG);
> + MWL8K_CMDNAME(ENABLE_SNIFFER);
> + MWL8K_CMDNAME(SET_WMM_MODE);
> + MWL8K_CMDNAME(SET_EDCA_PARAMS);
> + MWL8K_CMDNAME(SET_FINALIZE_JOIN);
> + MWL8K_CMDNAME(UPDATE_STADB);
> + MWL8K_CMDNAME(SET_RATEADAPT_MODE);
> + MWL8K_CMDNAME(SET_LINKADAPT_MODE);
> + MWL8K_CMDNAME(SET_AID);
> + MWL8K_CMDNAME(SET_RATE);
> + MWL8K_CMDNAME(USE_FIXED_RATE);
> + MWL8K_CMDNAME(RTS_THRESHOLD);
> + MWL8K_CMDNAME(ENCRYPTION);
> + 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);
> +}
> +
> +/* Firmware load/unload routines */
> +#define MWL8K_FW_FMIMAGE "fmimage"
> +#define MWL8K_FW_HELPER "helper"
> +#define MWL8K_FW_FILE_EXT "fw"
> +#define MWL8K_FW_SUBDIR "mwl8k"
> +
> +/* Translate PCI device ID to device number */
> +static u32 mwl8k_get_partnum(u16 pci_id)
> +{
> + switch (pci_id) {
> + case 0x2a2b:
> + case 0x2a30:
> + return 8687;
> + default:
> + return 0;
> + }
> +}
> +
> +/* Release fw image */
> +static void mwl8k_release_fw(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);
> +}
> +
> +/* Request fw image */
> +static int mwl8k_request_fw(struct mwl8k_priv *priv,
> + const char *fname, struct firmware **fw)
> +{
> + /* release current image */
> + if (*fw != NULL)
> + mwl8k_release_fw(fw);
> +
> + return request_firmware((const struct firmware **)fw,
> + fname, &priv->pdev->dev);
> +}
> +
> +static int mwl8k_request_firmware(struct mwl8k_priv *priv)
> +{
> + u8 filename[64], subdir[32];
> + u32 part_num = mwl8k_get_partnum(priv->pdev->device);
> + int rc;
> +
> + if (!part_num) {
> + printk(KERN_ERR "%s PCI ID 0x%x not recognized\n",
> + pci_name(priv->pdev), priv->pdev->device);
> + return -ENODEV;
> + }
> +
> + priv->part_num = part_num;
> +
> + strncpy(subdir, MWL8K_FW_SUBDIR, sizeof(subdir));
> +
> + snprintf(filename, sizeof(filename), "%s/%s_%u.%s",
> + subdir, MWL8K_FW_HELPER,
> + part_num, MWL8K_FW_FILE_EXT);
> +
> + rc = mwl8k_request_fw(priv, filename, &priv->fw.helper);
> + if (rc) {
> + printk(KERN_ERR
> + "%s Error requesting helper firmware file %s\n",
> + pci_name(priv->pdev), filename);
> + return rc;
> + }
> +
> + snprintf(filename, sizeof(filename), "%s/%s_%u.%s",
> + subdir, MWL8K_FW_FMIMAGE,
> + part_num, MWL8K_FW_FILE_EXT);
> +
> + rc = mwl8k_request_fw(priv, filename, &priv->fw.ucode);
> + if (rc) {
> + printk(KERN_ERR "%s Error requesting firmware file %s\n",
> + pci_name(priv->pdev), filename);
> + mwl8k_release_fw(&priv->fw.helper);
> + return rc;
> + }
> +
> + return 0;
> +}
> +
> +struct mwl8k_cmd_pkt {
> + __le16 code;
> + __le16 length;
> + __le16 seq_num;
> + __le16 result;
> + char payload[0];
> +} __attribute__((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 rc;
> + 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);
> +
> + rc = -ETIMEDOUT;
> + 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);
> + rc = 0;
> + break;
> + }
> +
> + udelay(1);
> + } while (--loops);
> +
> + pci_unmap_single(priv->pdev, dma_addr, length, PCI_DMA_TODEVICE);
> +
> + /*
> + * Clear 'command done' interrupt bit.
> + */
> + loops = 1000;
> + do {
> + u32 status;
> +
> + status = ioread32(priv->regs +
> + MWL8K_HIU_A2H_INTERRUPT_STATUS);
> + if (status & MWL8K_A2H_INT_OPC_DONE) {
> + iowrite32(~MWL8K_A2H_INT_OPC_DONE,
> + priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
> + ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
> + break;
> + }
> +
> + udelay(1);
> + } while (--loops);
> +
> + return rc;
> +}
> +
> +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->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 mwl8k_priv *priv)
> +{
> + int loops, rc;
> +
> + const u8 *ucode = priv->fw.ucode->data;
> + size_t ucode_len = priv->fw.ucode->size;
> + const u8 *helper = priv->fw.helper->data;
> + size_t helper_len = priv->fw.helper->size;
> +
> + if (!memcmp(ucode, "\x01\x00\x00\x00", 4)) {
> + rc = mwl8k_load_fw_image(priv, helper, helper_len);
> + if (rc) {
> + printk(KERN_ERR "%s: unable to load firmware "
> + "helper image\n", pci_name(priv->pdev));
> + return rc;
> + }
> + msleep(1);
> +
> + rc = mwl8k_feed_fw_image(priv, ucode, ucode_len);
> + } else {
> + rc = mwl8k_load_fw_image(priv, ucode, ucode_len);
> + }
> +
> + if (rc) {
> + printk(KERN_ERR "%s: unable to load firmware data\n",
> + pci_name(priv->pdev));
> + return rc;
> + }
> +
> + iowrite32(MWL8K_MODE_STA, priv->regs + MWL8K_HIU_GEN_PTR);
> + msleep(1);
> +
> + loops = 200000;
> + do {
> + if (ioread32(priv->regs + MWL8K_HIU_INT_CODE)
> + == MWL8K_FWSTA_READY)
> + break;
> + udelay(1);
> + } while (--loops);
> +
> + return loops ? 0 : -ETIMEDOUT;
> +}
> +
> +
> +/*
> + * Defines shared between transmission and reception.
> + */
> +/* HT control fields for firmware */
> +struct ewc_ht_info {
> + __u16 control1;
> + __u16 control2;
> + __u16 control3;
> +} __attribute__((packed));
> +
> +/* Firmware Station database operations */
> +#define MWL8K_STA_DB_ADD_ENTRY 0
> +#define MWL8K_STA_DB_MODIFY_ENTRY 1
> +#define MWL8K_STA_DB_DEL_ENTRY 2
> +#define MWL8K_STA_DB_FLUSH 3
> +
> +/* Peer Entry flags - used to define the type of the peer node */
> +#define MWL8K_PEER_TYPE_ACCESSPOINT 2
> +#define MWL8K_PEER_TYPE_ADHOC_STATION 4
> +
> +#define MWL8K_IEEE_LEGACY_DATA_RATES 12
> +#define MWL8K_MCS_BITMAP_SIZE 16
> +#define pad_size 16
> +
> +struct peer_capability_info {
> + /* Peer type - AP vs. STA. */
> + __u8 peer_type;
> +
> + /* Basic 802.11 capabilities from assoc resp. */
> + __u16 basic_caps;
> +
> + /* Set if peer supports 802.11n high throughput (HT). */
> + __u8 ht_support;
> +
> + /* Valid if HT is supported. */
> + __u16 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[MWL8K_IEEE_LEGACY_DATA_RATES];
> +
> + /* HT rate table. Intersection of our rates and peer rates. */
> + __u8 ht_rates[MWL8K_MCS_BITMAP_SIZE];
> + __u8 pad[pad_size];
> +
> + /* If set, interoperability mode, no proprietary extensions. */
> + __u8 interop;
> + __u8 pad2;
> + __u8 station_id;
> + __u16 amsdu_enabled;
> +} __attribute__((packed));
> +
> +static inline int mwl8k_get_frametype(__le16 fc)
> +{
> + if (ieee80211_is_data(fc))
> + return IEEE80211_FTYPE_DATA;
> +
> + if (ieee80211_is_mgmt(fc))
> + return IEEE80211_FTYPE_MGMT;
> +
> + if (ieee80211_is_ctl(fc))
> + return IEEE80211_FTYPE_CTL;
> +
> + return 0;
> +}
> +
> +/* Inline functions to manipulate QoS field in data descriptor. */
> +static inline u16 mwl8k_qos_setbit_tid(u16 qos, u8 tid)
> +{
> + u16 val_mask = 0x000f;
> + u16 qos_mask = ~val_mask;
> +
> + /* TID bits 0-3 */
> + return (qos & qos_mask) | (tid & val_mask);
> +}
> +
> +static inline u16 mwl8k_qos_setbit_eosp(u16 qos)
> +{
> + u16 val_mask = 1 << 4;
> +
> + /* End of Service Period Bit 4 */
> + return qos | val_mask;
> +}
> +
> +static inline u16 mwl8k_qos_setbit_ack(u16 qos, u8 ack_policy)
> +{
> + u16 val_mask = 0x3;
> + u8 shift = 5;
> + u16 qos_mask = ~(val_mask << shift);
> +
> + /* Ack Policy Bit 5-6 */
> + return (qos & qos_mask) | ((ack_policy & val_mask) << shift);
> +}
> +
> +static inline u16 mwl8k_qos_setbit_amsdu(u16 qos)
> +{
> + u16 val_mask = 1 << 7;
> +
> + /* AMSDU present Bit 7 */
> + return qos | val_mask;
> +}
> +
> +static inline u16 mwl8k_qos_setbit_qlen(u16 qos, u8 len)
> +{
> + u16 val_mask = 0xff;
> + u8 shift = 8;
> + u16 qos_mask = ~(val_mask << shift);
> +
> + /* Queue Length Bits 8-15 */
> + return (qos & qos_mask) | ((len & val_mask) << shift);
> +}
> +
> +/* DMA header used by firmware and hardware. */
> +struct mwl8k_dma_data {
> + __u16 fwlen;
> + struct ieee80211_hdr wh;
> +} __attribute__((packed));
> +
> +/* Routines to add/remove DMA header from skb. */
> +static inline int mwl8k_remove_dma_header(struct sk_buff *skb)
> +{
> + struct mwl8k_dma_data *tr = (struct mwl8k_dma_data *)(skb->data);
> + void *dst, *src = &tr->wh;
> + __le16 fc = tr->wh.frame_control;
> + __u16 hdrlen = ieee80211_hdrlen(fc);
> + __u16 space = (sizeof(struct mwl8k_dma_data) - hdrlen);
> +
> + /* DMA header is removed only if skb is not shared or cloned */
> + if (skb_cloned(skb) || skb_shared(skb)) {
> + printk(KERN_ERR
> + "Cannot remove DMA header from shared skb\n");
> + return -EIO;
> + }
> + dst = (void *)tr + space;
> +
> + if (dst != src) {
> + memmove(dst, src, hdrlen);
> + skb_pull(skb, space);
> + }
> +
> + return 0;
> +
> +}
> +
> +static inline struct sk_buff *mwl8k_add_dma_header(struct sk_buff *skb)
> +{
> + struct ieee80211_hdr *wh;
> + __u32 hdrlen, pktlen;
> + struct mwl8k_dma_data *tr;
> + __le16 fc;
> +
> + /*
> + * Skb data is changed when DMA header is added.
> + * Unshare/Unclone skb.
> + */
> + if (skb_cloned(skb))
> + skb = skb_unshare(skb, GFP_ATOMIC);
> + else if (skb_shared(skb))
> + skb = skb_share_check(skb, GFP_ATOMIC);
> +
> + if (skb == NULL) {
> + printk(KERN_ERR "Failed to unshare skb\n");
> + return NULL;
> + }
> +
> + wh = (struct ieee80211_hdr *)skb->data;
> + fc = wh->frame_control;
> + hdrlen = ieee80211_hdrlen(fc);
> + pktlen = skb->len;
> +
> + /*
> + * Copy up/down the 802.11 header; the firmware requires
> + * we present a 2-byte payload length followed by a
> + * 4-address header (w/o QoS), followed (optionally) by
> + * any WEP/ExtIV header (but only filled in for CCMP).
> + */
> + if (hdrlen < sizeof(struct mwl8k_dma_data)) {
> + const int space = sizeof(struct mwl8k_dma_data) - hdrlen;
> + u32 headroom = skb_headroom(skb);
> +
> + if (headroom < space) {
> + /* NB: should never happen */
> + printk(KERN_ERR "Not enough headroom, need %d, "
> + "found %d, len %d\n", space,
> + headroom, skb->len);
> + return NULL;
> + }
> + skb_push(skb, space);
> + }
> +
> + /* tr points to the new head of the skb after expansion */
> + tr = (struct mwl8k_dma_data *)(skb->data);
> + if (wh != &tr->wh)
> + memmove(&tr->wh, wh, hdrlen);
> +
> + /* Clear addr4 */
> + memset(tr->wh.addr4, 0, IEEE80211_ADDR_LEN);
> +
> + /*
> + * 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(pktlen - hdrlen);
> +
> + return skb;
> +}
> +
> +
> +/*
> + * Packet reception.
> + */
> +#define MWL8K_RX_CTRL_KEY_INDEX_MASK 0x30
> +#define MWL8K_RX_CTRL_DECRYPT_ERROR 0x04
> +#define MWL8K_RX_CTRL_OWNED_BY_HOST 0x02
> +#define MWL8K_RX_CTRL_AMPDU 0x01
> +
> +struct mwl8k_rx_desc {
> + __le16 pkt_len;
> + __u8 link_quality;
> + __u8 noise_level;
> + __le32 pkt_phys_addr;
> + __le32 next_rx_desc_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];
> +} __attribute__((packed));
> +
> +#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->rx_desc_count = 0;
> + rxq->rx_head = 0;
> + rxq->rx_tail = 0;
> +
> + size = MWL8K_RX_DESCS * sizeof(struct mwl8k_rx_desc);
> +
> + rxq->rx_desc_area =
> + pci_alloc_consistent(priv->pdev, size, &rxq->rx_desc_dma);
> + if (rxq->rx_desc_area == NULL) {
> + printk(KERN_ERR "%s: failed to alloc RX descriptors\n",
> + priv->name);
> + return -ENOMEM;
> + }
> + memset(rxq->rx_desc_area, 0, size);
> +
> + rxq->rx_skb = kmalloc(MWL8K_RX_DESCS *
> + sizeof(*rxq->rx_skb), GFP_KERNEL);
> + if (rxq->rx_skb == NULL) {
> + printk(KERN_ERR "%s: failed to alloc RX skbuff list\n",
> + priv->name);
> + pci_free_consistent(priv->pdev, size,
> + rxq->rx_desc_area, rxq->rx_desc_dma);
> + return -ENOMEM;
> + }
> + memset(rxq->rx_skb, 0, MWL8K_RX_DESCS * sizeof(*rxq->rx_skb));
> +
> + for (i = 0; i < MWL8K_RX_DESCS; i++) {
> + struct mwl8k_rx_desc *rx_desc;
> + int nexti;
> +
> + rx_desc = rxq->rx_desc_area + i;
> + nexti = (i + 1) % MWL8K_RX_DESCS;
> +
> + rx_desc->next_rx_desc_phys_addr =
> + cpu_to_le32(rxq->rx_desc_dma
> + + nexti * sizeof(*rx_desc));
> + rx_desc->rx_ctrl =
> + cpu_to_le32(MWL8K_RX_CTRL_OWNED_BY_HOST);
> + }
> +
> + 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->rx_desc_count < MWL8K_RX_DESCS && limit--) {
> + struct sk_buff *skb;
> + int rx;
> +
> + skb = dev_alloc_skb(MWL8K_RX_MAXSZ);
> + if (skb == NULL)
> + break;
> +
> + rxq->rx_desc_count++;
> +
> + rx = rxq->rx_tail;
> + rxq->rx_tail = (rx + 1) % MWL8K_RX_DESCS;
> +
> + rxq->rx_desc_area[rx].pkt_phys_addr =
> + cpu_to_le32(pci_map_single(priv->pdev, skb->data,
> + MWL8K_RX_MAXSZ, DMA_FROM_DEVICE));
> +
> + rxq->rx_desc_area[rx].pkt_len = cpu_to_le16(MWL8K_RX_MAXSZ);
> + rxq->rx_skb[rx] = skb;
> + wmb();
> + rxq->rx_desc_area[rx].rx_ctrl = 0;
> +
> + 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;
> +
> + for (i = 0; i < MWL8K_RX_DESCS; i++) {
> + if (rxq->rx_skb[i] != NULL) {
> + unsigned long addr;
> +
> + addr = le32_to_cpu(rxq->rx_desc_area[i].pkt_phys_addr);
> + pci_unmap_single(priv->pdev, addr, MWL8K_RX_MAXSZ,
> + PCI_DMA_FROMDEVICE);
> + kfree_skb(rxq->rx_skb[i]);
> + rxq->rx_skb[i] = NULL;
> + }
> + }
> +
> + kfree(rxq->rx_skb);
> + rxq->rx_skb = NULL;
> +
> + pci_free_consistent(priv->pdev,
> + MWL8K_RX_DESCS * sizeof(struct mwl8k_rx_desc),
> + rxq->rx_desc_area, rxq->rx_desc_dma);
> + rxq->rx_desc_area = 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 mwl8k_priv *priv,
> + struct sk_buff *skb)
> +{
> + priv->capture_beacon = false;
> + memset(priv->capture_bssid, 0, IEEE80211_ADDR_LEN);
> +
> + /*
> + * 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)
> + queue_work(priv->config_wq,
> + &priv->finalize_join_worker);
> +}
> +
> +static int rxq_process(struct ieee80211_hw *hw, int index, int limit)
> +{
> + struct mwl8k_priv *priv = hw->priv;
> + struct mwl8k_rx_queue *rxq = priv->rxq + index;
> + int processed;
> +
> + processed = 0;
> + while (rxq->rx_desc_count && limit--) {
> + struct mwl8k_rx_desc *rx_desc;
> + struct sk_buff *skb;
> + struct ieee80211_rx_status status;
> + unsigned long addr;
> + struct ieee80211_hdr *wh;
> +
> + rx_desc = rxq->rx_desc_area + rxq->rx_head;
> + if (!(rx_desc->rx_ctrl & MWL8K_RX_CTRL_OWNED_BY_HOST))
> + break;
> + rmb();
> +
> + skb = rxq->rx_skb[rxq->rx_head];
> + rxq->rx_skb[rxq->rx_head] = NULL;
> +
> + rxq->rx_head = (rxq->rx_head + 1) % MWL8K_RX_DESCS;
> + rxq->rx_desc_count--;
> +
> + addr = le32_to_cpu(rx_desc->pkt_phys_addr);
> + pci_unmap_single(priv->pdev, addr,
> + MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
> +
> + skb_put(skb, le16_to_cpu(rx_desc->pkt_len));
> + if (mwl8k_remove_dma_header(skb)) {
> + dev_kfree_skb(skb);
> + continue;
> + }
> +
> + wh = (struct ieee80211_hdr *)skb->data;
> +
> + /*
> + * Check for pending join operation. save a copy of
> + * the beacon and schedule a tasklet to send finalize
> + * join command to the firmware.
> + */
> + if (mwl8k_capture_bssid(priv, wh))
> + mwl8k_save_beacon(priv, skb);
> +#ifdef USE_HW_CRYPTO
> + else if (priv->wep_enabled &&
> + ieee80211_has_protected(wh->frame_control)) {
> + wh->frame_control &=
> + cpu_to_le16(~IEEE80211_FCTL_PROTECTED);
> + printk(KERN_DEBUG "RX WEP bit cleared\n");
> + }
> +#endif
> +
> + memset(&status, 0, sizeof(status));
> + status.mactime = 0;
> + status.signal = -rx_desc->rssi;
> + status.noise = -rx_desc->noise_level;
> + status.qual = rx_desc->link_quality;
> + status.antenna = 1;
> + status.rate_idx = 1;
> + status.flag = 0;
> + if (rx_desc->rx_status &
> + MWL8K_RX_CTRL_DECRYPT_ERROR)
> + status.flag |= RX_FLAG_MMIC_ERROR;
> + status.band = IEEE80211_BAND_2GHZ;
> + status.freq = ieee80211_channel_to_frequency(rx_desc->channel);
> + ieee80211_rx_irqsafe(hw, skb, &status);
> +
> + processed++;
> + }
> +
> + return processed;
> +}
> +
> +
> +/*
> + * Packet transmission.
> + */
> +
> +/* Transmit queue assignment. */
> +enum {
> + MWL8K_WME_AC_BK = 0, /* background access */
> + MWL8K_WME_AC_BE = 1, /* best effort access */
> + MWL8K_WME_AC_VI = 2, /* video access */
> + MWL8K_WME_AC_VO = 3, /* voice access */
> +};
> +
> +/* Transmit packet ACK policy */
> +#define MWL8K_TXD_ACK_POLICY_NORMAL 0
> +#define MWL8K_TXD_ACK_POLICY_NONE 1
> +#define MWL8K_TXD_ACK_POLICY_NO_EXPLICIT 2
> +#define MWL8K_TXD_ACK_POLICY_BLOCKACK 3
> +
> +#define GET_TXQ(_ac) (\
> + ((_ac) == WME_AC_VO) ? MWL8K_WME_AC_VO : \
> + ((_ac) == WME_AC_VI) ? MWL8K_WME_AC_VI : \
> + ((_ac) == WME_AC_BK) ? MWL8K_WME_AC_BK : \
> + MWL8K_WME_AC_BE)
> +
> +#define MWL8K_TXD_STATUS_IDLE 0x00000000
> +#define MWL8K_TXD_STATUS_USED 0x00000001
> +#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_BROADCAST_TX 0x00000010
> +#define MWL8K_TXD_STATUS_FAILED_LINK_ERROR 0x00000020
> +#define MWL8K_TXD_STATUS_FAILED_EXCEED_LIMIT 0x00000040
> +#define MWL8K_TXD_STATUS_FAILED_AGING 0x00000080
> +#define MWL8K_TXD_STATUS_HOST_CMD 0x40000000
> +#define MWL8K_TXD_STATUS_FW_OWNED 0x80000000
> +#define MWL8K_TXD_SOFTSTALE 0x80
> +#define MWL8K_TXD_SOFTSTALE_MGMT_RETRY 0x01
> +
> +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[IEEE80211_ADDR_LEN];
> + __le32 next_tx_desc_phys_addr;
> + __le32 reserved;
> + __le16 rate_info;
> + __u8 peer_id;
> + __u8 tx_frag_cnt;
> +} __attribute__((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;
> +
> + memset(&txq->tx_stats, 0,
> + sizeof(struct ieee80211_tx_queue_stats));
> + txq->tx_stats.limit = MWL8K_TX_DESCS;
> + txq->tx_head = 0;
> + txq->tx_tail = 0;
> +
> + size = MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc);
> +
> + txq->tx_desc_area =
> + pci_alloc_consistent(priv->pdev, size, &txq->tx_desc_dma);
> + if (txq->tx_desc_area == NULL) {
> + printk(KERN_ERR "%s: failed to alloc TX descriptors\n",
> + priv->name);
> + return -ENOMEM;
> + }
> + memset(txq->tx_desc_area, 0, size);
> +
> + txq->tx_skb = kmalloc(MWL8K_TX_DESCS * sizeof(*txq->tx_skb),
> + GFP_KERNEL);
> + if (txq->tx_skb == NULL) {
> + printk(KERN_ERR "%s: failed to alloc TX skbuff list\n",
> + priv->name);
> + pci_free_consistent(priv->pdev, size,
> + txq->tx_desc_area, txq->tx_desc_dma);
> + return -ENOMEM;
> + }
> + memset(txq->tx_skb, 0, MWL8K_TX_DESCS * sizeof(*txq->tx_skb));
> +
> + for (i = 0; i < MWL8K_TX_DESCS; i++) {
> + struct mwl8k_tx_desc *tx_desc;
> + int nexti;
> +
> + tx_desc = txq->tx_desc_area + i;
> + nexti = (i + 1) % MWL8K_TX_DESCS;
> +
> + tx_desc->status = 0;
> + tx_desc->next_tx_desc_phys_addr =
> + cpu_to_le32(txq->tx_desc_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 inline int mwl8k_txq_busy(struct mwl8k_priv *priv)
> +{
> + return priv->pending_tx_pkts;
> +}
> +
> +struct mwl8k_txq_info {
> + u32 fw_owned;
> + u32 drv_owned;
> + u32 unused;
> + u32 len;
> + u32 head;
> + u32 tail;
> +};
> +
> +static int mwl8k_scan_tx_ring(struct mwl8k_priv *priv,
> + struct mwl8k_txq_info txinfo[],
> + u32 num_queues)
> +{
> + int count, desc, status;
> + struct mwl8k_tx_queue *txq;
> + struct mwl8k_tx_desc *tx_desc;
> + int ndescs = 0;
> +
> + memset(txinfo, 0, num_queues * sizeof(struct mwl8k_txq_info));
> + spin_lock_bh(&priv->tx_lock);
> + for (count = 0; count < num_queues; count++) {
> + txq = priv->txq + count;
> + txinfo[count].len = txq->tx_stats.len;
> + txinfo[count].head = txq->tx_head;
> + txinfo[count].tail = txq->tx_tail;
> + for (desc = 0; desc < MWL8K_TX_DESCS; desc++) {
> + tx_desc = txq->tx_desc_area + desc;
> + status = le32_to_cpu(tx_desc->status);
> +
> + if (status & MWL8K_TXD_STATUS_FW_OWNED)
> + txinfo[count].fw_owned++;
> + else
> + txinfo[count].drv_owned++;
> +
> + if (tx_desc->pkt_len == 0)
> + txinfo[count].unused++;
> + }
> + }
> + spin_unlock_bh(&priv->tx_lock);
> +
> + return ndescs;
> +}
> +/* Function sleeps, cannot be called from atomic context. */
> +static int mwl8k_tx_wait_empty(struct ieee80211_hw *hw, u32 delay_ms)
> +{
> + u32 count = 0;
> + unsigned long timeout = 0;
> + struct mwl8k_priv *priv = hw->priv;
> + DECLARE_COMPLETION_ONSTACK(cmd_wait);
> +
> + if (priv->tx_wait != NULL)
> + printk(KERN_ERR "WARNING Previous TXWaitEmpty instance\n");
> +
> + spin_lock_bh(&priv->tx_lock);
> + count = mwl8k_txq_busy(priv);
> + if (count) {
> + priv->tx_wait = &cmd_wait;
> + if (priv->radio_state)
> + mwl8k_tx_start(priv);
> + }
> + spin_unlock_bh(&priv->tx_lock);
> +
> + if (count) {
> + struct mwl8k_txq_info txinfo[4];
> + int index;
> + int newcount;
> +
> + timeout = wait_for_completion_timeout(&cmd_wait,
> + msecs_to_jiffies(delay_ms));
> + if (timeout)
> + return 0;
> +
> + spin_lock_bh(&priv->tx_lock);
> + priv->tx_wait = NULL;
> + newcount = mwl8k_txq_busy(priv);
> + spin_unlock_bh(&priv->tx_lock);
> +
> + printk(KERN_ERR "%s(%u) TIMEDOUT:%ums Pend:%u-->%u\n",
> + __func__, __LINE__, delay_ms, count, newcount);
> +
> + mwl8k_scan_tx_ring(priv, txinfo, 4);
> + for (index = 0 ; index < 4; index++)
> + printk(KERN_ERR
> + "TXQ:%u L:%u H:%u T:%u FW:%u DRV:%u U:%u\n",
> + index,
> + txinfo[index].len,
> + txinfo[index].head,
> + txinfo[index].tail,
> + txinfo[index].fw_owned,
> + txinfo[index].drv_owned,
> + txinfo[index].unused);
> + return -ETIMEDOUT;
> + }
> +
> + return 0;
> +}
> +
> +#define MWL8K_TXD_OK (MWL8K_TXD_STATUS_OK | \
> + MWL8K_TXD_STATUS_OK_RETRY | \
> + MWL8K_TXD_STATUS_OK_MORE_RETRY)
> +#define MWL8K_TXD_SUCCESS(stat) ((stat) & MWL8K_TXD_OK)
> +#define MWL8K_TXD_FAIL_RETRY(stat) \
> + ((stat) & (MWL8K_TXD_STATUS_FAILED_EXCEED_LIMIT))
> +
> +static void mwl8k_txq_reclaim(struct ieee80211_hw *hw, int index, int force)
> +{
> + struct mwl8k_priv *priv = hw->priv;
> + struct mwl8k_tx_queue *txq = priv->txq + index;
> + int wake = 0;
> +
> + while (txq->tx_stats.len > 0) {
> + int tx;
> + int rc;
> + struct mwl8k_tx_desc *tx_desc;
> + unsigned long addr;
> + size_t size;
> + struct sk_buff *skb;
> + struct ieee80211_tx_info *info;
> + u32 status;
> +
> + rc = 0;
> + tx = txq->tx_head;
> + tx_desc = txq->tx_desc_area + 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->tx_head = (tx + 1) % MWL8K_TX_DESCS;
> + BUG_ON(txq->tx_stats.len == 0);
> + txq->tx_stats.len--;
> + priv->pending_tx_pkts--;
> +
> + addr = le32_to_cpu(tx_desc->pkt_phys_addr);
> + size = (u32)(le16_to_cpu(tx_desc->pkt_len));
> + skb = txq->tx_skb[tx].skb;
> + txq->tx_skb[tx].skb = NULL;
> +
> + BUG_ON(skb == NULL);
> + pci_unmap_single(priv->pdev, addr, size, PCI_DMA_TODEVICE);
> +
> + rc = mwl8k_remove_dma_header(skb);
> +
> + /* Mark descriptor as unused */
> + tx_desc->pkt_phys_addr = 0;
> + tx_desc->pkt_len = 0;
> +
> + if (txq->tx_skb[tx].clone) {
> + /* Replace with original skb
> + * before returning to stack
> + * as buffer has been cloned
> + */
> + dev_kfree_skb(skb);
> + skb = txq->tx_skb[tx].clone;
> + txq->tx_skb[tx].clone = NULL;
> + }
> +
> + if (rc) {
> + /* Something has gone wrong here.
> + * Failed to remove DMA header.
> + * Print error message and drop packet.
> + */
> + printk(KERN_ERR
> + "%s: Error removing DMA header from tx skb 0x%p.\n",
> + priv->name, skb);
> +
> + dev_kfree_skb(skb);
> + continue;
> + }
> +
> + info = IEEE80211_SKB_CB(skb);
> + memset(&info->status, 0, sizeof(info->status));
> +
> + /* Convert firmware status stuff into tx_status */
> + if (MWL8K_TXD_SUCCESS(status)) {
> + /* Transmit OK */
> + info->flags |= IEEE80211_TX_STAT_ACK;
> + } else if (MWL8K_TXD_FAIL_RETRY(status)) {
> + info->status.excessive_retries = 1;
> + }
> +
> + if (force)
> + ieee80211_tx_status(hw, skb);
> + else
> + ieee80211_tx_status_irqsafe(hw, skb);
> +
> + wake = (!(priv->inconfig) && priv->radio_state);
> + }
> +
> + if (wake)
> + ieee80211_wake_queue(hw, index);
> +}
> +
> +/* 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;
> +
> + mwl8k_txq_reclaim(hw, index, 1);
> +
> + kfree(txq->tx_skb);
> + txq->tx_skb = NULL;
> +
> + pci_free_consistent(priv->pdev,
> + MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc),
> + txq->tx_desc_area, txq->tx_desc_dma);
> + txq->tx_desc_area = NULL;
> +}
> +
> +static int
> +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 ieee80211_hdr *wh;
> + struct mwl8k_tx_queue *txq;
> + struct mwl8k_tx_desc *tx;
> + struct mwl8k_dma_data *tr;
> + struct mwl8k_vif *mwl8k_vif;
> + struct sk_buff *org_skb = skb;
> + dma_addr_t dma;
> + __u16 qos = 0;
> + bool qosframe = false, ampduframe = false;
> + bool mcframe = false, eapolframe = false;
> + bool amsduframe = false;
> + __le16 fc;
> +
> + txq = priv->txq + index;
> + tx = txq->tx_desc_area + txq->tx_tail;
> +
> + BUG_ON(txq->tx_skb[txq->tx_tail].skb != NULL);
> +
> + /*
> + * Append HW DMA header to start of packet. Drop packet if
> + * there is not enough space or a failure to unshare/unclone
> + * the skb.
> + */
> + skb = mwl8k_add_dma_header(skb);
> +
> + if (skb == NULL) {
> + printk(KERN_DEBUG "%s: failed to prepend HW DMA "
> + "header, dropping TX frame.\n", priv->name);
> + dev_kfree_skb(org_skb);
> + return NETDEV_TX_OK;
> + };
> +
> + tx_info = IEEE80211_SKB_CB(skb);
> + mwl8k_vif = MWL8K_VIF(tx_info->control.vif);
> + tr = (struct mwl8k_dma_data *)skb->data;
> + wh = &tr->wh;
> + fc = wh->frame_control;
> + qosframe = ieee80211_is_data_qos(fc);
> + mcframe = is_multicast_ether_addr(wh->addr1);
> + ampduframe = hw->conf.ht_conf.ht_supported &&
> + (tx_info->flags & IEEE80211_TX_CTL_AMPDU);
> +
> + if (tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
> + u16 seqno = mwl8k_vif->seqno;
> + wh->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
> + wh->seq_ctrl |= cpu_to_le16(seqno << 4);
> + mwl8k_vif->seqno = seqno++ % 4096;
> + }
> +
> + if (qosframe)
> + qos = *ieee80211_get_qos_ctl(wh);
> +
> + dma = pci_map_single(priv->pdev, skb->data,
> + skb->len, PCI_DMA_TODEVICE);
> +
> + if (pci_dma_mapping_error(priv->pdev, dma)) {
> + printk(KERN_DEBUG "%s: failed to dma map skb, "
> + "dropping TX frame.\n", priv->name);
> +
> + if (org_skb != NULL)
> + dev_kfree_skb(org_skb);
> + if (skb != NULL)
> + dev_kfree_skb(skb);
> + return NETDEV_TX_OK;
> + };
> +
> + /* Set desc header, cpu bit order. */
> + tx->status = 0;
> + tx->data_rate = 0;
> + tx->tx_priority = index;
> + tx->qos_control = 0;
> + tx->rate_info = 0;
> + tx->peer_id = mwl8k_vif->peer_id;
> +
> + /*
> + * IEEE80211 frame is little endian, convert it back to
> + * the host byte order for processing.
> + */
> + qos = le16_to_cpu(qos);
> +
> + amsduframe = !!(qos & IEEE80211_QOS_CONTROL_A_MSDU_PRESENT);
> +
> + /* Setup firmware control bit fields for each frame type. */
> + switch (mwl8k_get_frametype(fc)) {
> + case IEEE80211_FTYPE_MGMT:
> + case IEEE80211_FTYPE_CTL:
> + tx->data_rate = 0;
> + qos = mwl8k_qos_setbit_eosp(qos);
> + /* Set Queue size to unspecified */
> + qos = mwl8k_qos_setbit_qlen(qos, 0xff);
> + break;
> +
> + case IEEE80211_FTYPE_DATA:
> + tx->data_rate = 1;
> + if (mcframe)
> + tx->status |= MWL8K_TXD_STATUS_MULTICAST_TX;
> +
> + /*
> + * Tell firmware to not send EAPOL pkts in an
> + * aggregate. Verify against mac80211 tx path. If
> + * stack turns off AMPDU for an EAPOL frame this
> + * check will be removed.
> + */
> + if (eapolframe) {
> + qos = mwl8k_qos_setbit_ack(qos,
> + MWL8K_TXD_ACK_POLICY_NORMAL);
> + } else {
> + /* Send pkt in an aggregate if AMPDU frame. */
> + if (ampduframe)
> + qos = mwl8k_qos_setbit_ack(qos,
> + MWL8K_TXD_ACK_POLICY_BLOCKACK);
> + else
> + qos = mwl8k_qos_setbit_ack(qos,
> + MWL8K_TXD_ACK_POLICY_NORMAL);
> +
> + if (amsduframe)
> + qos = mwl8k_qos_setbit_amsdu(qos);
> + }
> + break;
> + }
> +
> + /* Convert to little endian */
> + tx->qos_control = cpu_to_le16(qos);
> + tx->status = cpu_to_le32(tx->status);
> + tx->pkt_phys_addr = cpu_to_le32(dma);
> + tx->pkt_len = cpu_to_le16(skb->len);
> +
> + txq->tx_skb[txq->tx_tail].skb = skb;
> + txq->tx_skb[txq->tx_tail].clone =
> + skb == org_skb ? NULL : org_skb;
> +
> + spin_lock_bh(&priv->tx_lock);
> +
> + tx->status = cpu_to_le32(MWL8K_TXD_STATUS_OK |
> + MWL8K_TXD_STATUS_FW_OWNED);
> + wmb();
> + txq->tx_stats.len++;
> + priv->pending_tx_pkts++;
> + txq->tx_stats.count++;
> + txq->tx_tail++;
> +
> + if (txq->tx_tail == MWL8K_TX_DESCS)
> + txq->tx_tail = 0;
> + if (txq->tx_head == txq->tx_tail)
> + ieee80211_stop_queue(hw, index);
> +
> + if (priv->inconfig) {
> + /*
> + * Silently queue packet when we are in the middle of
> + * a config cycle. Notify firmware only if we are
> + * waiting for TXQs to empty. If a packet is sent
> + * before .config() is complete, perhaps it is better
> + * to drop the packet, as the channel is being changed
> + * and the packet will end up on the wrong channel.
> + */
> + printk(KERN_ERR "%s(): WARNING TX activity while "
> + "in config\n", __func__);
> +
> + if (priv->tx_wait != NULL)
> + mwl8k_tx_start(priv);
> + } else
> + mwl8k_tx_start(priv);
> +
> + spin_unlock_bh(&priv->tx_lock);
> +
> + return NETDEV_TX_OK;
> +}
> +
> +
> +/*
> + * Command processing.
> + */
> +
> +/* Timeout firmware commands after 2000ms */
> +#define MWL8K_CMD_TIMEOUT_MS 2000
> +
> +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;
> + u16 __iomem *result;
> + unsigned long timeout = 0;
> + u8 buf[32];
> +
> + cmd->result = 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;
> +
> + if (priv->hostcmd_wait != NULL)
> + printk(KERN_ERR "WARNING host command in progress\n");
> +
> + spin_lock_irq(&priv->fw_lock);
> + 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);
> + spin_unlock_irq(&priv->fw_lock);
> +
> + timeout = wait_for_completion_timeout(&cmd_wait,
> + msecs_to_jiffies(MWL8K_CMD_TIMEOUT_MS));
> +
> + result = &cmd->result;
> + if (!timeout) {
> + spin_lock_irq(&priv->fw_lock);
> + priv->hostcmd_wait = NULL;
> + spin_unlock_irq(&priv->fw_lock);
> + printk(KERN_ERR "%s: Command %s timeout after %u ms\n",
> + priv->name,
> + mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
> + MWL8K_CMD_TIMEOUT_MS);
> + rc = -ETIMEDOUT;
> + } else {
> + rc = *result ? -EINVAL : 0;
> + if (rc)
> + printk(KERN_ERR "%s: Command %s error 0x%x\n",
> + priv->name,
> + mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
> + *result);
> + }
> +
> + pci_unmap_single(priv->pdev, dma_addr, dma_size,
> + PCI_DMA_BIDIRECTIONAL);
> + return rc;
> +}
> +
> +/*
> + * GET_HW_SPEC.
> + */
> +struct mwl8k_cmd_get_hw_spec {
> + struct mwl8k_cmd_pkt header;
> + __u8 hw_rev;
> + __u8 host_interface;
> + __le16 num_mcaddrs;
> + __u8 perm_addr[IEEE80211_ADDR_LEN];
> + __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_QUEUES];
> + __le32 caps2;
> + __le32 num_tx_desc_per_queue;
> + __le32 total_rx_desc;
> +} __attribute__((packed));
> +
> +static int mwl8k_cmd_get_hw_spec(struct ieee80211_hw *hw)
> +{
> + struct mwl8k_priv *priv = hw->priv;
> + struct mwl8k_cmd_get_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_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].rx_desc_dma);
> + cmd->num_tx_queues = MWL8K_TX_QUEUES;
> + for (i = 0; i < MWL8K_TX_QUEUES; i++)
> + cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[i].tx_desc_dma);
> + cmd->num_tx_desc_per_queue = MWL8K_TX_DESCS;
> + cmd->total_rx_desc = 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 = cmd->fw_rev;
> + priv->hw_rev = cmd->hw_rev;
> + priv->region_code = le16_to_cpu(cmd->region_code);
> + }
> +
> + 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[1][IEEE80211_ADDR_LEN];
> +};
> +
> +#define MWL8K_ENABLE_RX_MULTICAST 0x000F
> +static int mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw *hw,
> + int mc_count,
> + struct dev_addr_list *mclist)
> +{
> + struct mwl8k_cmd_mac_multicast_adr *cmd;
> + int index = 0;
> + int rc;
> + int size = sizeof(*cmd) + ((mc_count - 1) * IEEE80211_ADDR_LEN);
> + cmd = kzalloc(size, GFP_KERNEL);
> + if (cmd == NULL)
> + return -ENOMEM;
> +
> + 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_MULTICAST);
> + cmd->numaddr = cpu_to_le16(mc_count);
> + while ((index < mc_count) && mclist) {
> + if (mclist->da_addrlen != IEEE80211_ADDR_LEN) {
> + rc = -EINVAL;
> + goto mwl8k_cmd_mac_multicast_adr_exit;
> + }
> + memcpy(cmd->addr[index], mclist->da_addr, IEEE80211_ADDR_LEN);
> + index++;
> + mclist = mclist->next;
> + }
> +
> + rc = mwl8k_post_cmd(hw, &cmd->header);
> +
> +mwl8k_cmd_mac_multicast_adr_exit:
> + kfree(cmd);
> + return rc;
> +}
> +
> +/*
> + * CMD_802_11_GET_STAT.
> + */
> +struct mwl8k_cmd_802_11_get_stat {
> + struct mwl8k_cmd_pkt header;
> + __le16 action;
> + __le32 stats[64];
> +} __attribute__((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_802_11_get_stat(struct ieee80211_hw *hw,
> + struct ieee80211_low_level_stats *stats)
> +{
> + struct mwl8k_cmd_802_11_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));
> + cmd->action = cpu_to_le16(MWL8K_CMD_GET);
> +
> + 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_802_11_RADIO_CONTROL.
> + */
> +struct mwl8k_cmd_802_11_radio_control {
> + struct mwl8k_cmd_pkt header;
> + __le16 action;
> + __le16 control;
> + __le16 radio_on;
> +} __attribute__((packed));
> +
> +static int mwl8k_cmd_802_11_radio_control(struct ieee80211_hw *hw, int enable)
> +{
> + struct mwl8k_priv *priv = hw->priv;
> + struct mwl8k_cmd_802_11_radio_control *cmd;
> + int rc;
> +
> + if (((enable & MWL8K_RADIO_ENABLE) == priv->radio_state) &&
> + !(enable & MWL8K_RADIO_FORCE))
> + return 0;
> +
> + enable &= MWL8K_RADIO_ENABLE;
> +
> + 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_preamble);
> + cmd->radio_on = cpu_to_le16(enable ? 0x0001 : 0x0000);
> +
> + rc = mwl8k_post_cmd(hw, &cmd->header);
> + kfree(cmd);
> +
> + if (!rc)
> + priv->radio_state = enable;
> +
> + return rc;
> +}
> +
> +static int
> +mwl8k_set_radio_preamble(struct ieee80211_hw *hw, bool short_preamble)
> +{
> + struct mwl8k_priv *priv = hw->priv;
> +
> + if (hw == NULL || hw->priv == NULL)
> + return -EINVAL;
> +
> + priv->radio_preamble = (short_preamble ?
> + MWL8K_RADIO_SHORT_PREAMBLE :
> + MWL8K_RADIO_LONG_PREAMBLE);
> +
> + return mwl8k_cmd_802_11_radio_control(hw,
> + MWL8K_RADIO_ENABLE | MWL8K_RADIO_FORCE);
> +}
> +
> +/*
> + * CMD_802_11_RF_TX_POWER.
> + */
> +#define MWL8K_TX_POWER_LEVEL_TOTAL 8
> +
> +struct mwl8k_cmd_802_11_rf_tx_power {
> + struct mwl8k_cmd_pkt header;
> + __le16 action;
> + __le16 support_level;
> + __le16 current_level;
> + __le16 reserved;
> + __le16 power_level_list[MWL8K_TX_POWER_LEVEL_TOTAL];
> +} __attribute__((packed));
> +
> +static int mwl8k_cmd_802_11_rf_tx_power(struct ieee80211_hw *hw, int dBm)
> +{
> + struct mwl8k_cmd_802_11_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_SET_PRE_SCAN.
> + */
> +struct mwl8k_cmd_set_pre_scan {
> + struct mwl8k_cmd_pkt header;
> +} __attribute__((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[IEEE80211_ADDR_LEN];
> +} __attribute__((packed));
> +
> +static int
> +mwl8k_cmd_set_post_scan(struct ieee80211_hw *hw, __u8 mac[IEEE80211_ADDR_LEN])
> +{
> + 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, IEEE80211_ADDR_LEN);
> +
> + 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;
> + __u32 channel_flags;
> +} __attribute__((packed));
> +
> +static int mwl8k_cmd_set_rf_channel(struct ieee80211_hw *hw,
> + struct ieee80211_channel *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(0x00000081);
> + else
> + cmd->channel_flags = cpu_to_le32(0x00000000);
> +
> + 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;
> +} __attribute__((packed));
> +
> +static int mwl8k_cmd_set_slot(struct ieee80211_hw *hw, int 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 = slot_time == MWL8K_SHORT_SLOTTIME ? 1 : 0;
> +
> + rc = mwl8k_post_cmd(hw, &cmd->header);
> + kfree(cmd);
> +
> + 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;
> +} __attribute__((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_ENABLE_SNIFFER.
> + */
> +struct mwl8k_cmd_enable_sniffer {
> + struct mwl8k_cmd_pkt header;
> + __le32 action;
> +} __attribute__((packed));
> +
> +static int mwl8k_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 = enable ? cpu_to_le32((u32)MWL8K_CMD_SET) : 0;
> +
> + rc = mwl8k_post_cmd(hw, &cmd->header);
> + kfree(cmd);
> +
> + return rc;
> +}
> +
> +/*
> + * CMD_SET_RATE_ADAPT_MODE.
> + */
> +struct mwl8k_cmd_set_rate_adapt_mode {
> + struct mwl8k_cmd_pkt header;
> + __le16 action;
> + __le16 mode;
> +} __attribute__((packed));
> +
> +static int mwl8k_cmd_setrateadaptmode(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_SET_WMM_MODE.
> + */
> +struct mwl8k_cmd_set_wmm {
> + struct mwl8k_cmd_pkt header;
> + __le16 action;
> +} __attribute__((packed));
> +
> +static int mwl8k_set_wmm(struct ieee80211_hw *hw, bool enable)
> +{
> + struct mwl8k_priv *priv = hw->priv;
> + struct mwl8k_cmd_set_wmm *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 = enable ? cpu_to_le16(MWL8K_CMD_SET) : 0;
> +
> + rc = mwl8k_post_cmd(hw, &cmd->header);
> + kfree(cmd);
> +
> + if (!rc)
> + priv->wmm_mode = enable;
> +
> + return rc;
> +}
> +
> +/*
> + * CMD_SET_RTS_THRESHOLD.
> + */
> +struct mwl8k_cmd_rts_threshold {
> + struct mwl8k_cmd_pkt header;
> + __le16 action;
> + __le16 threshold;
> +} __attribute__((packed));
> +
> +static int mwl8k_rts_threshold(struct ieee80211_hw *hw,
> + u16 action, u16 *threshold)
> +{
> + struct mwl8k_cmd_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(action);
> + cmd->threshold = cpu_to_le16(*threshold);
> +
> + 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;
> +
> + /* 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;
> +} __attribute__((packed));
> +
> +#define MWL8K_GET_EDCA_ALL 0
> +#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_set_edca_params(struct ieee80211_hw *hw, __u8 qnum,
> + __u16 cw_min, __u16 cw_max,
> + __u8 aifs, __u16 txop)
> +{
> + struct mwl8k_cmd_set_edca_params *cmd;
> + u32 log_cw_min, log_cw_max;
> + int rc;
> +
> + cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
> + if (cmd == NULL)
> + return -ENOMEM;
> +
> + log_cw_min = ilog2(cw_min+1);
> + log_cw_max = ilog2(cw_max+1);
> + 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);
> + cmd->log_cw_max = (u8)log_cw_max;
> + cmd->log_cw_min = (u8)log_cw_min;
> + cmd->aifs = aifs;
> + cmd->txq = qnum;
> +
> + rc = mwl8k_post_cmd(hw, &cmd->header);
> + kfree(cmd);
> +
> + return rc;
> +}
> +
> +/*
> + * CMD_FINALIZE_JOIN.
> + */
> +
> +/* FJ beacon buffer size is compiled into the firmware. */
> +#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];
> +} __attribute__((packed));
> +
> +static int mwl8k_finalize_join(struct ieee80211_hw *hw, void *frame,
> + __u16 framelen, __u16 dtim)
> +{
> + struct mwl8k_cmd_finalize_join *cmd;
> + struct ieee80211_mgmt *payload = frame;
> + u16 hdrlen;
> + u32 payload_len;
> + int rc;
> +
> + if (frame == NULL)
> + return -EINVAL;
> +
> + 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));
> +
> + if (dtim)
> + cmd->sleep_interval = cpu_to_le32(dtim);
> + else
> + cmd->sleep_interval = cpu_to_le32(1);
> +
> + hdrlen = ieee80211_hdrlen(payload->frame_control);
> +
> + payload_len = framelen > hdrlen ? framelen - hdrlen : 0;
> +
> + /* XXX TBD Might just have to abort and return an error */
> + if (payload_len > MWL8K_FJ_BEACON_MAXLEN)
> + printk(KERN_ERR "%s(): WARNING: Incomplete beacon "
> + "sent to firmware. Sz=%u MAX=%u\n", __func__,
> + payload_len, MWL8K_FJ_BEACON_MAXLEN);
> +
> + payload_len = payload_len > MWL8K_FJ_BEACON_MAXLEN ?
> + MWL8K_FJ_BEACON_MAXLEN : payload_len;
> +
> + if (payload && payload_len)
> + memcpy(cmd->beacon_data, &payload->u.beacon, payload_len);
> +
> + rc = mwl8k_post_cmd(hw, &cmd->header);
> + kfree(cmd);
> + return rc;
> +}
> +
> +/*
> + * CMD_UPDATE_STADB.
> + */
> +struct mwl8k_cmd_update_sta_db {
> + struct mwl8k_cmd_pkt header;
> +
> + /* See STADB_ACTION_TYPE */
> + __le32 action;
> +
> + /* Peer MAC address */
> + __u8 peer_addr[IEEE80211_ADDR_LEN];
> +
> + __le32 reserved;
> +
> + /* Peer info - valid during add/update. */
> + struct peer_capability_info peer_info;
> +} __attribute__((packed));
> +
> +static int mwl8k_cmd_update_sta_db(struct ieee80211_hw *hw,
> + struct ieee80211_vif *vif, __u32 action)
> +{
> + struct mwl8k_vif *mv_vif = MWL8K_VIF(vif);
> + struct ieee80211_bss_conf *info = &mv_vif->bss_info;
> + struct mwl8k_cmd_update_sta_db *cmd;
> + struct peer_capability_info *peer_info;
> + struct ieee80211_rate *bitrates = mv_vif->legacy_rates;
> + DECLARE_MAC_BUF(mac);
> + int rc;
> + __u8 count, *rates;
> +
> + 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(action);
> + peer_info = &cmd->peer_info;
> + memcpy(cmd->peer_addr, mv_vif->bssid, IEEE80211_ADDR_LEN);
> +
> + switch (action) {
> + case MWL8K_STA_DB_ADD_ENTRY:
> + case MWL8K_STA_DB_MODIFY_ENTRY:
> + /* Build peer_info block */
> + peer_info->ht_support = cpu_to_le16(info->assoc_ht ? 1 : 0);
> + peer_info->peer_type =
> + vif->type == IEEE80211_IF_TYPE_IBSS ?
> + MWL8K_PEER_TYPE_ADHOC_STATION :
> + MWL8K_PEER_TYPE_ACCESSPOINT;
> +
> + peer_info->basic_caps = info->assoc_capability;
> + peer_info->interop = 1;
> + peer_info->amsdu_enabled = 0;
> +
> + rates = peer_info->legacy_rates;
> + for (count = 0 ; count < mv_vif->legacy_nrates; count++)
> + rates[count] = bitrates[count].hw_value;
> +
> + rc = mwl8k_post_cmd(hw, &cmd->header);
> + if (rc == 0)
> + mv_vif->peer_id = peer_info->station_id;
> +
> + break;
> +
> + case MWL8K_STA_DB_DEL_ENTRY:
> + case MWL8K_STA_DB_FLUSH:
> + default:
> + rc = mwl8k_post_cmd(hw, &cmd->header);
> + if (rc == 0)
> + mv_vif->peer_id = 0;
> + break;
> + }
> + kfree(cmd);
> +
> + return rc;
> +}
> +
> +/*
> + * CMD_SET_AID.
> + */
> +#define IEEE80211_OPMODE_DISABLED 0x00
> +#define IEEE80211_OPMODE_NON_MEMBER_PROT_MODE 0x01
> +#define IEEE80211_OPMODE_ONE_20MHZ_STA_PROT_MODE 0x02
> +#define IEEE80211_OPMODE_HTMIXED_PROT_MODE 0x03
> +
> +#define MWL8K_RATE_INDEX_MAX_ARRAY 14
> +
> +#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
> +#define MWL8K_FRAME_PROT_MASK 0x07
> +
> +struct mwl8k_cmd_update_set_aid {
> + struct mwl8k_cmd_pkt header;
> + __le16 aid;
> +
> + /* AP's MAC address (BSSID) */
> + __u8 bssid[IEEE80211_ADDR_LEN];
> + __le16 protection_mode;
> + __u8 supp_rates[MWL8K_RATE_INDEX_MAX_ARRAY];
> +} __attribute__((packed));
> +
> +static int mwl8k_cmd_set_aid(struct ieee80211_hw *hw,
> + struct ieee80211_vif *vif)
> +{
> + struct mwl8k_vif *mv_vif = MWL8K_VIF(vif);
> + struct ieee80211_bss_conf *info = &mv_vif->bss_info;
> + struct mwl8k_cmd_update_set_aid *cmd;
> + struct ieee80211_rate *bitrates = mv_vif->legacy_rates;
> + int count;
> + 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(info->aid);
> +
> + memcpy(cmd->bssid, mv_vif->bssid, IEEE80211_ADDR_LEN);
> +
> + prot_mode = MWL8K_FRAME_PROT_DISABLED;
> +
> + if (info->use_cts_prot) {
> + prot_mode = MWL8K_FRAME_PROT_11G;
> + } else {
> + /* Associated to HT AP */
> + if (info->assoc_ht) {
> + switch (info->ht_bss_conf->bss_op_mode) {
> + case IEEE80211_OPMODE_ONE_20MHZ_STA_PROT_MODE:
> + prot_mode = MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY;
> + break;
> + case IEEE80211_OPMODE_HTMIXED_PROT_MODE:
> + 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);
> +
> + for (count = 0; count < mv_vif->legacy_nrates; count++)
> + cmd->supp_rates[count] = bitrates[count].hw_value;
> +
> + rc = mwl8k_post_cmd(hw, &cmd->header);
> + kfree(cmd);
> +
> + return rc;
> +}
> +
> +/*
> + * CMD_SET_RATE.
> + */
> +struct mwl8k_cmd_update_rateset {
> + struct mwl8k_cmd_pkt header;
> + __u8 legacy_rates[MWL8K_RATE_INDEX_MAX_ARRAY];
> +
> + /* Bitmap for supported MCS codes. */
> + __u8 mcs_set[MWL8K_IEEE_LEGACY_DATA_RATES];
> + __u8 reserved[MWL8K_IEEE_LEGACY_DATA_RATES];
> +} __attribute__((packed));
> +
> +static int mwl8k_update_rateset(struct ieee80211_hw *hw,
> + struct ieee80211_vif *vif)
> +{
> + struct mwl8k_vif *mv_vif = MWL8K_VIF(vif);
> + struct ieee80211_bss_conf *info = &mv_vif->bss_info;
> + struct ieee80211_ht_info *ht_conf = info->ht_conf;
> + struct mwl8k_cmd_update_rateset *cmd;
> + struct ieee80211_rate *bitrates = mv_vif->legacy_rates;
> + int count;
> + 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));
> +
> + if (info->assoc_ht && ht_conf != NULL && ht_conf->ht_supported)
> + memcpy(cmd->mcs_set, ht_conf->supp_mcs_set,
> + sizeof(cmd->mcs_set));
> +
> + for (count = 0; count < mv_vif->legacy_nrates; count++)
> + cmd->legacy_rates[count] = bitrates[count].hw_value;
> +
> + rc = mwl8k_post_cmd(hw, &cmd->header);
> + kfree(cmd);
> +
> + return rc;
> +}
> +
> +/*
> + * CMD_USE_FIXED_RATE.
> + */
> +#define MWL8K_RATE_TABLE_SIZE 8
> +#define MWL8K_UCAST_RATE 0
> +#define MWL8K_MCAST_RATE 1
> +#define MWL8K_BCAST_RATE 2
> +
> +#define MWL8K_USE_FIXED_RATE 0x0001
> +#define MWL8K_USE_AUTO_RATE 0x0002
> +
> +struct mwl8k_rate_entry {
> + /* Set to 1 if HT rate, 0 if legacy. */
> + __le32 is_ht_rate;
> +
> + /* Set to 1 to use retry_count field. */
> + __le32 enable_retry;
> +
> + /* Specified legacy rate or MCS. */
> + __le32 rate;
> +
> + /* Number of allowed retries. */
> + __le32 retry_count;
> +} __attribute__((packed));
> +
> +struct mwl8k_rate_table {
> + /* 1 to allow specified rate and below */
> + __le32 allow_rate_drop;
> + __le32 num_rates;
> + struct mwl8k_rate_entry rate_entry[MWL8K_RATE_TABLE_SIZE];
> +} __attribute__((packed));
> +
> +struct mwl8k_cmd_use_fixed_rate {
> + struct mwl8k_cmd_pkt header;
> + __le32 action;
> + struct mwl8k_rate_table rate_table;
> +
> + /* Unicast, Broadcast or Multicast */
> + __le32 rate_type;
> + __le32 reserved1;
> + __le32 reserved2;
> +} __attribute__((packed));
> +
> +static int mwl8k_cmd_use_fixed_rate(struct ieee80211_hw *hw,
> + u32 action, u32 rate_type, struct mwl8k_rate_table *rate_table)
> +{
> + struct mwl8k_cmd_use_fixed_rate *cmd;
> + int count;
> + 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(action);
> + cmd->rate_type = cpu_to_le32(rate_type);
> +
> + if (rate_table != NULL) {
> + /* Copy over each field manually so
> + * that bitflipping can be done
> + */
> + cmd->rate_table.allow_rate_drop =
> + cpu_to_le32(rate_table->allow_rate_drop);
> + cmd->rate_table.num_rates =
> + cpu_to_le32(rate_table->num_rates);
> +
> + for (count = 0; count < rate_table->num_rates; count++) {
> + struct mwl8k_rate_entry *dst =
> + &cmd->rate_table.rate_entry[count];
> + struct mwl8k_rate_entry *src =
> + &rate_table->rate_entry[count];
> +
> + dst->is_ht_rate = cpu_to_le32(src->is_ht_rate);
> + dst->enable_retry = cpu_to_le32(src->enable_retry);
> + dst->rate = cpu_to_le32(src->rate);
> + dst->retry_count = cpu_to_le32(src->retry_count);
> + }
> + }
> +
> + rc = mwl8k_post_cmd(hw, &cmd->header);
> + kfree(cmd);
> +
> + return rc;
> +}
> +
> +#if USE_HW_CRYPTO
> +/*
> + * CMD_ENCRYPTION.
> + */
> +#define MWL8K_MAX_ENCR_KEYLEN 16
> +#define MWL8K_ENCR_MICLEN 8
> +
> +struct mwl8k_wep_key {
> + __u8 key[MWL8K_MAX_ENCR_KEYLEN];
> +} __attribute__((packed));
> +
> +struct mwl8k_tkip_seq {
> + __le16 reserved;
> + __le16 low;
> + __le32 high;
> +} __attribute__((packed));
> +
> +struct mwl8k_tkip_key {
> + __u8 key[MWL8K_MAX_ENCR_KEYLEN];
> + __u8 tx_mic[MWL8K_ENCR_MICLEN];
> + __u8 rx_mic[MWL8K_ENCR_MICLEN];
> + struct mwl8k_tkip_seq rx_seq;
> + struct mwl8k_tkip_seq tx_seq;
> +} __attribute__((packed));
> +
> +struct mwl8k_aes_key {
> + __u8 key[MWL8K_MAX_ENCR_KEYLEN];
> +} __attribute__((packed));
> +
> +struct mwl8k_encr_key_data {
> + __le32 flags;
> + __le32 index;
> + __le16 size;
> + __le16 key_id;
> + __le16 key_len;
> + __le16 reserved;
> + union {
> + struct mwl8k_wep_key wep;
> + struct mwl8k_tkip_key tkip;
> + struct mwl8k_aes_key aes;
> + } __attribute__((packed)) key;
> +} __attribute__((packed));
> +
> +struct mwl8k_cmd_encryption {
> + struct mwl8k_cmd_pkt header;
> + __le32 action;
> + __le32 key_len;
> + __u8 peer_addr[IEEE80211_ADDR_LEN];
> + __le16 reserved;
> + struct mwl8k_encr_key_data key_data;
> +} __attribute__((packed));
> +
> +enum mwl8k_encr_action {
> + MWL8K_ENCR_ENABLE,
> + MWL8K_ENCR_SET_KEY,
> + MWL8K_ENCR_REMOVE_KEY,
> +};
> +
> +enum mwl8k_encr_key_type {
> + MWL8K_ENCR_KEY_WEP = 0x00,
> + MWL8K_ENCR_KEY_TKIP,
> + MWL8K_ENCR_KEY_AES,
> +};
> +
> +#define MWL8K_ENCR_INUSE 0x00000001
> +#define MWL8K_ENCR_RXGROUPKEY 0x00000002
> +#define MWL8K_ENCR_TXGROUPKEY 0x00000004
> +#define MWL8K_ENCR_GROUPKEY (MWL8K_ENCR_TXGROUPKEY | \
> + MWL8K_ENCR_RXGROUPKEY)
> +#define MWL8K_ENCR_PAIRWISE 0x00000008
> +#define MWL8K_ENCR_RXONLY 0x00000010
> +#define MWL8K_ENCR_AUTHENTICATOR 0x00000020
> +#define MWL8K_ENCR_TSC_VALID 0x00000040
> +#define MWL8K_ENCR_WEP_TXKEY 0x01000000
> +#define MWL8K_ENCR_MIC_VALID 0x02000000
> +#define MWL8K_ENCR_TKIP_MIC (MWL8K_ENCR_AUTHENTICATOR | \
> + MWL8K_ENCR_MIC_VALID)
> +
> +static int mwl8k_cmd_set_encryption(struct ieee80211_hw *hw,
> + enum set_key_cmd kcmd,
> + const u8 *address,
> + struct ieee80211_key_conf *key)
> +{
> + struct mwl8k_cmd_encryption *cmd;
> + struct mwl8k_encr_key_data *kp;
> + struct mwl8k_priv *priv = hw->priv;
> + int rc;
> +
> + cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
> + if (cmd == NULL)
> + return -ENOMEM;
> +
> + cmd->header.code = cpu_to_le16(MWL8K_CMD_ENCRYPTION);
> + cmd->header.length = cpu_to_le16(sizeof(*cmd));
> +
> + cmd->action = cpu_to_le32(kcmd == SET_KEY ?
> + MWL8K_ENCR_SET_KEY : MWL8K_ENCR_REMOVE_KEY);
> + memcpy(cmd->peer_addr, address, IEEE80211_ADDR_LEN);
> +
> + kp = &cmd->key_data;
> + kp->index = cpu_to_le32(key->keyidx);
> + kp->key_len = cpu_to_le16(key->keylen);
> + kp->size = cpu_to_le32(sizeof(struct mwl8k_encr_key_data));
> + if (key->key != NULL)
> + memcpy(&kp->key, key->key, key->keylen);
> +
> + kp->flags = MWL8K_ENCR_INUSE;
> + if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
> + kp->flags |= MWL8K_ENCR_PAIRWISE;
> + /* Per mac80211.h broadcast address for default keys */
> + else if (is_broadcast_ether_addr(address))
> + kp->flags |= MWL8K_ENCR_GROUPKEY;
> +
> + switch (key->alg) {
> + case ALG_WEP:
> + kp->key_id = cpu_to_le32(MWL8K_ENCR_KEY_WEP);
> + /* Per mac80211.h zero address for tx key */
> + if (is_zero_ether_addr(address))
> + kp->flags |= MWL8K_ENCR_WEP_TXKEY;
> + break;
> + case ALG_TKIP:
> + kp->key_id = cpu_to_le32(MWL8K_ENCR_KEY_TKIP);
> + kp->flags |= MWL8K_ENCR_TKIP_MIC;
> + break;
> + case ALG_CCMP:
> + kp->key_id = cpu_to_le32(MWL8K_ENCR_KEY_AES);
> + break;
> + default:
> + kfree(cmd);
> + return -EINVAL;
> + }
> +
> + kp->flags = cpu_to_le32(kp->flags);
> +
> + /* Send keys to firmware. */
> + rc = mwl8k_post_cmd(hw, &cmd->header);
> +
> + /* Enable encryption */
> + if (!rc) {
> + if (kcmd == SET_KEY) {
> + cmd->header.code = cpu_to_le16(MWL8K_CMD_ENCRYPTION);
> + cmd->action = cpu_to_le32(MWL8K_ENCR_ENABLE);
> +
> + rc = mwl8k_post_cmd(hw, &cmd->header);
> + if (!rc) {
> + key->hw_key_idx = kp->index;
> + priv->wep_enabled++;
> + }
> + } else if (priv->wep_enabled)
> + priv->wep_enabled--;
> + }
> +
> + kfree(cmd);
> +
> + return rc;
> +}
> +#endif
> +
> +
> +/*
> + * 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);
> + iowrite32(~status, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
> +
> + status &= priv->int_mask;
> + if (!status)
> + return IRQ_NONE;
> +
> + if (status & MWL8K_A2H_INT_TX_DONE)
> + tasklet_schedule(&priv->tx_reclaim_task);
> +
> + if (status & MWL8K_A2H_INT_RX_READY) {
> + while (rxq_process(hw, 0, 1))
> + rxq_refill(hw, 0, 1);
> + }
> +
> + if (status & MWL8K_A2H_INT_OPC_DONE) {
> + if (priv->hostcmd_wait != NULL) {
> + complete(priv->hostcmd_wait);
> + priv->hostcmd_wait = NULL;
> + }
> + }
> +
> + if (status & MWL8K_A2H_INT_QUEUE_EMPTY) {
> + if (!priv->inconfig &&
> + priv->radio_state &&
> + mwl8k_txq_busy(priv))
> + mwl8k_tx_start(priv);
> + }
> +
> + return IRQ_HANDLED;
> +}
> +
> +
> +/*
> + * Core driver operations.
> + */
> +static int mwl8k_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
> +{
> + struct mwl8k_priv *priv = hw->priv;
> + int index = skb_get_queue_mapping(skb);
> + int rc;
> +
> + if (priv->current_channel == NULL) {
> + printk(KERN_DEBUG "%s: dropped TX frame since radio "
> + "disabled\n", priv->name);
> + dev_kfree_skb(skb);
> + return NETDEV_TX_OK;
> + }
> +
> + rc = mwl8k_txq_xmit(hw, index, skb);
> +
> + return rc;
> +}
> +
> +struct mwl8k_work_struct {
> + /* Initialized by mwl8k_queue_work(). */
> + struct work_struct wt;
> +
> + /* Required field passed in to mwl8k_queue_work(). */
> + struct ieee80211_hw *hw;
> +
> + /* Required field passed in to mwl8k_queue_work(). */
> + int (*wfunc)(struct work_struct *w);
> +
> + /* Initialized by mwl8k_queue_work(). */
> + struct completion *cmd_wait;
> +
> + /* Result code. */
> + int rc;
> +
> + /*
> + * Optional field. Refer to explanation of MWL8K_WQ_XXX_XXX
> + * flags for explanation. Defaults to MWL8K_WQ_DEFAULT_OPTIONS.
> + */
> + u32 options;
> +
> + /* Optional field. Defaults to MWL8K_CONFIG_TIMEOUT_MS. */
> + unsigned long timeout_ms;
> +
> + /* Optional field. Defaults to MWL8K_WQ_TXWAIT_ATTEMPTS. */
> + u32 txwait_attempts;
> +
> + /* Optional field. Defaults to MWL8K_TXWAIT_MS. */
> + u32 tx_timeout_ms;
> + u32 step;
> +};
> +
> +/* Flags controlling behavior of config queue requests */
> +
> +/* Caller spins while waiting for completion. */
> +#define MWL8K_WQ_SPIN 0x00000001
> +
> +/* Wait for TX queues to empty before proceeding with configuration. */
> +#define MWL8K_WQ_TX_WAIT_EMPTY 0x00000002
> +
> +/* Queue request and return immediately. */
> +#define MWL8K_WQ_POST_REQUEST 0x00000004
> +
> +/*
> + * Caller sleeps and waits for task complete notification.
> + * Do not use in atomic context.
> + */
> +#define MWL8K_WQ_SLEEP 0x00000008
> +
> +/* Free work struct when task is done. */
> +#define MWL8K_WQ_FREE_WORKSTRUCT 0x00000010
> +
> +/*
> + * Config request is queued and returns to caller imediately. Use
> + * this in atomic context. Work struct is freed by mwl8k_queue_work()
> + * when this flag is set.
> + */
> +#define MWL8K_WQ_QUEUE_ONLY (MWL8K_WQ_POST_REQUEST | \
> + MWL8K_WQ_FREE_WORKSTRUCT)
> +
> +/* Default work queue behavior is to sleep and wait for tx completion. */
> +#define MWL8K_WQ_DEFAULT_OPTIONS (MWL8K_WQ_SLEEP | MWL8K_WQ_TX_WAIT_EMPTY)
> +
> +/*
> + * Default config request timeout. Add adjustments to make sure the
> + * config thread waits long enough for both tx wait and cmd wait before
> + * timing out.
> + */
> +
> +/* Time to wait for all TXQs to drain. TX Doorbell is pressed each time. */
> +#define MWL8K_TXWAIT_TIMEOUT_MS 1000
> +
> +/* Default number of TX wait attempts. */
> +#define MWL8K_WQ_TXWAIT_ATTEMPTS 4
> +
> +/* Total time to wait for TXQ to drain. */
> +#define MWL8K_TXWAIT_MS (MWL8K_TXWAIT_TIMEOUT_MS * \
> + MWL8K_WQ_TXWAIT_ATTEMPTS)
> +
> +/* Scheduling slop. */
> +#define MWL8K_OS_SCHEDULE_OVERHEAD_MS 200
> +
> +#define MWL8K_CONFIG_TIMEOUT_MS (MWL8K_CMD_TIMEOUT_MS + \
> + MWL8K_TXWAIT_MS + \
> + MWL8K_OS_SCHEDULE_OVERHEAD_MS)
> +
> +static void mwl8k_config_thread(struct work_struct *wt)
> +{
> + struct mwl8k_work_struct *worker = (struct mwl8k_work_struct *)wt;
> + struct ieee80211_hw *hw = worker->hw;
> + struct mwl8k_priv *priv = hw->priv;
> + int rc = 0;
> +
> + spin_lock_irq(&priv->tx_lock);
> + priv->inconfig = true;
> + spin_unlock_irq(&priv->tx_lock);
> +
> + ieee80211_stop_queues(hw);
> +
> + /*
> + * Wait for host queues to drain before doing PHY
> + * reconfiguration. This avoids interrupting any in-flight
> + * DMA transfers to the hardware.
> + */
> + if (worker->options & MWL8K_WQ_TX_WAIT_EMPTY) {
> + u32 timeout;
> + u32 time_remaining;
> + u32 iter;
> + u32 tx_wait_attempts = worker->txwait_attempts;
> +
> + time_remaining = worker->tx_timeout_ms;
> + if (!tx_wait_attempts)
> + tx_wait_attempts = 1;
> +
> + timeout = worker->tx_timeout_ms/tx_wait_attempts;
> + if (!timeout)
> + timeout = 1;
> +
> + iter = tx_wait_attempts;
> + do {
> + int wait_time;
> +
> + if (time_remaining > timeout) {
> + time_remaining -= timeout;
> + wait_time = timeout;
> + } else
> + wait_time = time_remaining;
> +
> + if (!wait_time)
> + wait_time = 1;
> +
> + rc = mwl8k_tx_wait_empty(hw, wait_time);
> + if (rc)
> + printk(KERN_ERR "%s() txwait timeout=%ums "
> + "Retry:%u/%u\n", __func__, timeout,
> + tx_wait_attempts - iter + 1,
> + tx_wait_attempts);
> +
> + } while (rc && --iter);
> +
> + rc = iter ? 0 : -ETIMEDOUT;
> + }
> + if (!rc)
> + rc = worker->wfunc(wt);
> +
> + spin_lock_irq(&priv->tx_lock);
> + priv->inconfig = false;
> + if (priv->pending_tx_pkts && priv->radio_state)
> + mwl8k_tx_start(priv);
> + spin_unlock_irq(&priv->tx_lock);
> + ieee80211_wake_queues(hw);
> +
> + worker->rc = rc;
> + if (worker->options & MWL8K_WQ_SLEEP)
> + complete(worker->cmd_wait);
> +
> + if (worker->options & MWL8K_WQ_FREE_WORKSTRUCT)
> + kfree(wt);
> +}
> +
> +static int mwl8k_queue_work(struct ieee80211_hw *hw,
> + struct mwl8k_work_struct *worker,
> + struct workqueue_struct *wqueue,
> + int (*wfunc)(struct work_struct *w))
> +{
> + unsigned long timeout = 0;
> + int rc = 0;
> +
> + DECLARE_COMPLETION_ONSTACK(cmd_wait);
> +
> + if (!worker->timeout_ms)
> + worker->timeout_ms = MWL8K_CONFIG_TIMEOUT_MS;
> +
> + if (!worker->options)
> + worker->options = MWL8K_WQ_DEFAULT_OPTIONS;
> +
> + if (!worker->txwait_attempts)
> + worker->txwait_attempts = MWL8K_WQ_TXWAIT_ATTEMPTS;
> +
> + if (!worker->tx_timeout_ms)
> + worker->tx_timeout_ms = MWL8K_TXWAIT_MS;
> +
> + worker->hw = hw;
> + worker->cmd_wait = &cmd_wait;
> + worker->rc = 1;
> + worker->wfunc = wfunc;
> +
> + INIT_WORK(&worker->wt, mwl8k_config_thread);
> + queue_work(wqueue, &worker->wt);
> +
> + if (worker->options & MWL8K_WQ_POST_REQUEST) {
> + rc = 0;
> + } else {
> + if (worker->options & MWL8K_WQ_SPIN) {
> + timeout = worker->timeout_ms;
> + while (timeout && (worker->rc > 0)) {
> + mdelay(1);
> + timeout--;
> + }
> + } else if (worker->options & MWL8K_WQ_SLEEP)
> + timeout = wait_for_completion_timeout(&cmd_wait,
> + msecs_to_jiffies(worker->timeout_ms));
> +
> + if (timeout)
> + rc = worker->rc;
> + else {
> + cancel_work_sync(&worker->wt);
> + rc = -ETIMEDOUT;
> + }
> + }
> +
> + return rc;
> +}
> +
> +struct mwl8k_start_worker {
> + struct mwl8k_work_struct header;
> +};
> +
> +static int mwl8k_start_wt(struct work_struct *wt)
> +{
> + struct mwl8k_start_worker *worker = (struct mwl8k_start_worker *)wt;
> + struct ieee80211_hw *hw = worker->header.hw;
> + struct mwl8k_priv *priv = hw->priv;
> + int rc = 0;
> +
> + if (priv->vif != NULL) {
> + rc = -EIO;
> + goto mwl8k_start_exit;
> + }
> +
> + /* Turn on radio */
> + if (mwl8k_cmd_802_11_radio_control(hw, MWL8K_RADIO_ENABLE)) {
> + rc = -EIO;
> + goto mwl8k_start_exit;
> + }
> +
> + /* Purge TX/RX HW queues */
> + if (mwl8k_cmd_set_pre_scan(hw)) {
> + rc = -EIO;
> + goto mwl8k_start_exit;
> + }
> +
> + if (mwl8k_cmd_set_post_scan(hw, "\x00\x00\x00\x00\x00\x00")) {
> + rc = -EIO;
> + goto mwl8k_start_exit;
> + }
> +
> + /* Enable firmware rate adaptation */
> + if (mwl8k_cmd_setrateadaptmode(hw, 0)) {
> + rc = -EIO;
> + goto mwl8k_start_exit;
> + }
> +
> + /* Disable WMM. WMM gets enabled when stack sends WMM parms */
> + if (mwl8k_set_wmm(hw, MWL8K_WMM_DISABLE)) {
> + rc = -EIO;
> + goto mwl8k_start_exit;
> + }
> +
> + /* Disable sniffer mode */
> + if (mwl8k_enable_sniffer(hw, 0))
> + rc = -EIO;
> +
> +mwl8k_start_exit:
> + return rc;
> +}
> +
> +static int mwl8k_start(struct ieee80211_hw *hw)
> +{
> + struct mwl8k_start_worker *worker;
> + struct mwl8k_priv *priv = hw->priv;
> + int rc;
> +
> + /* Enable tx reclaim tasklet */
> + tasklet_enable(&priv->tx_reclaim_task);
> +
> + rc = request_irq(priv->pdev->irq, &mwl8k_interrupt,
> + IRQF_SHARED, MWL8K_NAME, hw);
> + if (rc) {
> + printk(KERN_ERR "%s: failed to register IRQ handler\n",
> + priv->name);
> + rc = -EIO;
> + goto mwl8k_start_disable_tasklet;
> + }
> +
> + /* Enable interrupts */
> + iowrite32(priv->int_mask, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
> +
> + worker = kzalloc(sizeof(*worker), GFP_KERNEL);
> + if (worker == NULL) {
> + rc = -ENOMEM;
> + goto mwl8k_start_disable_irq;
> + }
> +
> + rc = mwl8k_queue_work(hw, &worker->header,
> + priv->config_wq, mwl8k_start_wt);
> + kfree(worker);
> + if (!rc)
> + return rc;
> +
> + if (rc == -ETIMEDOUT)
> + printk(KERN_ERR "%s() timed out\n", __func__);
> +
> + rc = -EIO;
> +
> +mwl8k_start_disable_irq:
> + spin_lock_irq(&priv->tx_lock);
> + iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
> + spin_unlock_irq(&priv->tx_lock);
> + free_irq(priv->pdev->irq, hw);
> +
> +mwl8k_start_disable_tasklet:
> + tasklet_disable(&priv->tx_reclaim_task);
> +
> + return rc;
> +}
> +
> +struct mwl8k_stop_worker {
> + struct mwl8k_work_struct header;
> +};
> +
> +static int mwl8k_stop_wt(struct work_struct *wt)
> +{
> + struct mwl8k_stop_worker *worker = (struct mwl8k_stop_worker *)wt;
> + struct ieee80211_hw *hw = worker->header.hw;
> + int rc;
> +
> + rc = mwl8k_cmd_802_11_radio_control(hw, MWL8K_RADIO_DISABLE);
> +
> + return rc;
> +}
> +
> +static void mwl8k_stop(struct ieee80211_hw *hw)
> +{
> + int rc;
> + struct mwl8k_stop_worker *worker;
> + struct mwl8k_priv *priv = hw->priv;
> + int i;
> +
> + if (priv->vif != NULL)
> + return;
> +
> + ieee80211_stop_queues(hw);
> +
> + worker = kzalloc(sizeof(*worker), GFP_KERNEL);
> + if (worker == NULL)
> + return;
> +
> + rc = mwl8k_queue_work(hw, &worker->header,
> + priv->config_wq, mwl8k_stop_wt);
> + kfree(worker);
> + if (rc == -ETIMEDOUT)
> + printk(KERN_ERR "%s() timed out\n", __func__);
> +
> + /* Disable interrupts */
> + spin_lock_irq(&priv->tx_lock);
> + iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
> + spin_unlock_irq(&priv->tx_lock);
> + free_irq(priv->pdev->irq, hw);
> +
> + /* Stop finalize join worker */
> + cancel_work_sync(&priv->finalize_join_worker);
> + if (priv->beacon_skb != NULL)
> + dev_kfree_skb(priv->beacon_skb);
> +
> + /* Stop tx reclaim tasklet */
> + tasklet_disable(&priv->tx_reclaim_task);
> +
> + /* Stop config thread */
> + flush_workqueue(priv->config_wq);
> +
> + /* Return all skbs to mac80211 */
> + for (i = 0; i < MWL8K_TX_QUEUES; i++)
> + mwl8k_txq_reclaim(hw, i, 1);
> +}
> +
> +static int mwl8k_add_interface(struct ieee80211_hw *hw,
> + struct ieee80211_if_init_conf *conf)
> +{
> + struct mwl8k_priv *priv = hw->priv;
> + struct mwl8k_vif *mwl8k_vif;
> +
> + /*
> + * We only support one active interface at a time.
> + */
> + if (priv->vif != NULL)
> + return -EBUSY;
> +
> + /*
> + * We only support managed interfaces for now.
> + */
> + if (conf->type != IEEE80211_IF_TYPE_STA &&
> + conf->type != IEEE80211_IF_TYPE_MNTR)
> + return -EINVAL;
> +
> + /* Clean out driver private area */
> + mwl8k_vif = MWL8K_VIF(conf->vif);
> + memset(mwl8k_vif, 0, sizeof(*mwl8k_vif));
> +
> + /* Save the mac address */
> + memcpy(mwl8k_vif->mac_addr, conf->mac_addr, IEEE80211_ADDR_LEN);
> +
> + /* Back pointer to parent config block */
> + mwl8k_vif->priv = priv;
> +
> + /* Setup initial PHY parameters */
> + memcpy(mwl8k_vif->legacy_rates ,
> + priv->rates, sizeof(mwl8k_vif->legacy_rates));
> + mwl8k_vif->legacy_nrates = ARRAY_SIZE(priv->rates);
> +
> + /* Set Initial sequence number to zero */
> + mwl8k_vif->seqno = 0;
> +
> + priv->vif = conf->vif;
> + priv->current_channel = NULL;
> +
> + return 0;
> +}
> +
> +static void mwl8k_remove_interface(struct ieee80211_hw *hw,
> + struct ieee80211_if_init_conf *conf)
> +{
> + struct mwl8k_priv *priv = hw->priv;
> +
> + if (priv->vif == NULL)
> + return;
> +
> + priv->vif = NULL;
> +}
> +
> +struct mwl8k_config_worker {
> + struct mwl8k_work_struct header;
> + struct ieee80211_conf *conf;
> +};
> +
> +static int mwl8k_config_wt(struct work_struct *wt)
> +{
> + struct mwl8k_config_worker *worker =
> + (struct mwl8k_config_worker *)wt;
> +
> + struct ieee80211_conf *conf = worker->conf;
> + struct ieee80211_hw *hw = worker->header.hw;
> + struct mwl8k_priv *priv = hw->priv;
> + int slot;
> + int rc = 0;
> +
> + if (!conf->radio_enabled) {
> + mwl8k_cmd_802_11_radio_control(hw, MWL8K_RADIO_DISABLE);
> + priv->current_channel = NULL;
> + rc = 0;
> + goto mwl8k_config_exit;
> + }
> +
> + if (mwl8k_cmd_802_11_radio_control(hw, MWL8K_RADIO_ENABLE)) {
> + rc = -EINVAL;
> + goto mwl8k_config_exit;
> + }
> +
> + priv->current_channel = conf->channel;
> +
> + if (mwl8k_cmd_set_rf_channel(hw, conf->channel)) {
> + rc = -EINVAL;
> + goto mwl8k_config_exit;
> + }
> +
> + if (conf->power_level > 18)
> + conf->power_level = 18;
> + if (mwl8k_cmd_802_11_rf_tx_power(hw, conf->power_level)) {
> + rc = -EINVAL;
> + goto mwl8k_config_exit;
> + }
> +
> + if (mwl8k_cmd_mimo_config(hw,
> + conf->antenna_sel_rx ? 1 << conf->antenna_sel_rx : 0x7,
> + conf->antenna_sel_tx ? 1 << conf->antenna_sel_tx : 0x7)) {
> + rc = -EINVAL;
> + goto mwl8k_config_exit;
> + }
> +
> + if (conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME)
> + slot = MWL8K_SHORT_SLOTTIME;
> + else
> + slot = MWL8K_LONG_SLOTTIME;
> +
> + if (mwl8k_cmd_set_slot(hw, MWL8K_LONG_SLOTTIME))
> + rc = -EINVAL;
> +
> +mwl8k_config_exit:
> + return rc;
> +}
> +
> +static int mwl8k_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
> +{
> + int rc = 0;
> + struct mwl8k_config_worker *worker;
> + struct mwl8k_priv *priv = hw->priv;
> +
> + worker = kzalloc(sizeof(*worker), GFP_KERNEL);
> + if (worker == NULL)
> + return -ENOMEM;
> +
> + worker->conf = conf;
> + rc = mwl8k_queue_work(hw, &worker->header,
> + priv->config_wq, mwl8k_config_wt);
> + if (rc == -ETIMEDOUT) {
> + printk(KERN_ERR "%s() timed out.\n", __func__);
> + rc = -EINVAL;
> + }
> +
> + kfree(worker);
> +
> + /*
> + * mac80211 will crash on anything other than -EINVAL on
> + * error. Looks like wireless extensions which calls mac80211
> + * may be the actual culprit...
> + */
> + return rc ? -EINVAL : 0;
> +}
> +
> +static int mwl8k_config_interface(struct ieee80211_hw *hw,
> + struct ieee80211_vif *vif,
> + struct ieee80211_if_conf *conf)
> +{
> + struct mwl8k_vif *mv_vif = MWL8K_VIF(vif);
> + u32 changed = conf->changed;
> +
> + if (changed & IEEE80211_IFCC_BSSID)
> + memcpy(mv_vif->bssid, conf->bssid, IEEE80211_ADDR_LEN);
> +
> + return 0;
> +}
> +
> +struct mwl8k_bss_info_changed_worker {
> + struct mwl8k_work_struct header;
> + struct ieee80211_vif *vif;
> + struct ieee80211_bss_conf *info;
> + u32 changed;
> +};
> +
> +static int mwl8k_bss_info_changed_wt(struct work_struct *wt)
> +{
> + struct mwl8k_bss_info_changed_worker *worker =
> + (struct mwl8k_bss_info_changed_worker *)wt;
> + struct ieee80211_hw *hw = worker->header.hw;
> + struct ieee80211_vif *vif = worker->vif;
> + struct ieee80211_bss_conf *info = worker->info;
> + u32 changed;
> + int rc;
> +
> + struct mwl8k_priv *priv = hw->priv;
> + struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
> +
> + changed = worker->changed;
> + priv->capture_beacon = false;
> +
> + if (info->assoc) {
> + memcpy(&mwl8k_vif->bss_info, info,
> + sizeof(struct ieee80211_bss_conf));
> +
> + /* Install rates */
> + if (mwl8k_update_rateset(hw, vif))
> + goto mwl8k_bss_info_changed_exit;
> +
> + /* Turn on rate adaptation */
> + if (mwl8k_cmd_use_fixed_rate(hw, MWL8K_USE_AUTO_RATE,
> + MWL8K_UCAST_RATE, NULL))
> + goto mwl8k_bss_info_changed_exit;
> +
> + /* Set radio preamble */
> + if (mwl8k_set_radio_preamble(hw,
> + info->use_short_preamble))
> + goto mwl8k_bss_info_changed_exit;
> +
> + /* Update peer rate info */
> + if (mwl8k_cmd_update_sta_db(hw, vif,
> + MWL8K_STA_DB_MODIFY_ENTRY))
> + goto mwl8k_bss_info_changed_exit;
> +
> + /* Set AID */
> + if (mwl8k_cmd_set_aid(hw, vif))
> + goto mwl8k_bss_info_changed_exit;
> +
> + /*
> + * Finalize the join. Tell rx handler to process
> + * next beacon from our BSSID.
> + */
> + memcpy(priv->capture_bssid,
> + mwl8k_vif->bssid, IEEE80211_ADDR_LEN);
> + priv->capture_beacon = true;
> + } else {
> + mwl8k_cmd_update_sta_db(hw, vif, MWL8K_STA_DB_DEL_ENTRY);
> + memset(&mwl8k_vif->bss_info, 0,
> + sizeof(struct ieee80211_bss_conf));
> + memset(mwl8k_vif->bssid, 0, IEEE80211_ADDR_LEN);
> + }
> +
> +mwl8k_bss_info_changed_exit:
> + rc = 0;
> + return rc;
> +}
> +
> +static void mwl8k_bss_info_changed(struct ieee80211_hw *hw,
> + struct ieee80211_vif *vif,
> + struct ieee80211_bss_conf *info,
> + u32 changed)
> +{
> + struct mwl8k_bss_info_changed_worker *worker;
> + struct mwl8k_priv *priv = hw->priv;
> + int rc;
> +
> + if ((changed & BSS_CHANGED_ASSOC) == 0)
> + return;
> +
> + worker = kzalloc(sizeof(*worker), GFP_KERNEL);
> + if (worker == NULL)
> + return;
> +
> + worker->vif = vif;
> + worker->info = info;
> + worker->changed = changed;
> + rc = mwl8k_queue_work(hw, &worker->header,
> + priv->config_wq,
> + mwl8k_bss_info_changed_wt);
> + kfree(worker);
> + if (rc == -ETIMEDOUT)
> + printk(KERN_ERR "%s() timed out\n", __func__);
> +}
> +
> +struct mwl8k_configure_filter_worker {
> + struct mwl8k_work_struct header;
> + unsigned int changed_flags;
> + unsigned int *total_flags;
> + int mc_count;
> + struct dev_addr_list *mclist;
> +};
> +
> +#define MWL8K_SUPPORTED_IF_FLAGS FIF_BCN_PRBRESP_PROMISC
> +
> +static int mwl8k_configure_filter_wt(struct work_struct *wt)
> +{
> + struct mwl8k_configure_filter_worker *worker =
> + (struct mwl8k_configure_filter_worker *)wt;
> +
> + struct ieee80211_hw *hw = worker->header.hw;
> + unsigned int changed_flags = worker->changed_flags;
> + unsigned int *total_flags = worker->total_flags;
> + int mc_count = worker->mc_count;
> + struct dev_addr_list *mclist = worker->mclist;
> +
> + struct mwl8k_priv *priv = hw->priv;
> + struct mwl8k_vif *mv_vif;
> + int rc = 0;
> +
> + if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
> + if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
> + rc = mwl8k_cmd_set_pre_scan(hw);
> + else {
> + mv_vif = MWL8K_VIF(priv->vif);
> + rc = mwl8k_cmd_set_post_scan(hw, mv_vif->bssid);
> + }
> + }
> +
> + if (rc)
> + goto mwl8k_configure_filter_exit;
> + if (mc_count) {
> + mc_count = mc_count < priv->num_mcaddrs ?
> + mc_count : priv->num_mcaddrs;
> + rc = mwl8k_cmd_mac_multicast_adr(hw, mc_count, mclist);
> + if (rc)
> + printk(KERN_ERR
> + "%s()Error setting multicast addresses\n",
> + __func__);
> + }
> +
> +mwl8k_configure_filter_exit:
> + return rc;
> +}
> +
> +static void mwl8k_configure_filter(struct ieee80211_hw *hw,
> + unsigned int changed_flags,
> + unsigned int *total_flags,
> + int mc_count,
> + struct dev_addr_list *mclist)
> +{
> +
> + struct mwl8k_configure_filter_worker *worker;
> + struct mwl8k_priv *priv = hw->priv;
> +
> + /* Clear unsupported feature flags */
> + *total_flags &= MWL8K_SUPPORTED_IF_FLAGS;
> +
> + if (!(changed_flags & MWL8K_SUPPORTED_IF_FLAGS) && !mc_count)
> + return;
> +
> + worker = kzalloc(sizeof(*worker), GFP_ATOMIC);
> + if (worker == NULL)
> + return;
> +
> + worker->header.options = MWL8K_WQ_QUEUE_ONLY | MWL8K_WQ_TX_WAIT_EMPTY;
> + worker->changed_flags = changed_flags;
> + worker->total_flags = total_flags;
> + worker->mc_count = mc_count;
> + worker->mclist = mclist;
> +
> + mwl8k_queue_work(hw, &worker->header, priv->config_wq,
> + mwl8k_configure_filter_wt);
> +}
> +
> +struct mwl8k_set_rts_threshold_worker {
> + struct mwl8k_work_struct header;
> + u32 value;
> +};
> +
> +static int mwl8k_set_rts_threshold_wt(struct work_struct *wt)
> +{
> + struct mwl8k_set_rts_threshold_worker *worker =
> + (struct mwl8k_set_rts_threshold_worker *)wt;
> +
> + struct ieee80211_hw *hw = worker->header.hw;
> + u16 threshold = (u16)(worker->value);
> + int rc;
> +
> + rc = mwl8k_rts_threshold(hw, MWL8K_CMD_SET, &threshold);
> +
> + return rc;
> +}
> +
> +static int mwl8k_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
> +{
> + int rc;
> + struct mwl8k_set_rts_threshold_worker *worker;
> + struct mwl8k_priv *priv = hw->priv;
> +
> + worker = kzalloc(sizeof(*worker), GFP_KERNEL);
> + if (worker == NULL)
> + return -ENOMEM;
> +
> + worker->value = value;
> +
> + rc = mwl8k_queue_work(hw, &worker->header,
> + priv->config_wq,
> + mwl8k_set_rts_threshold_wt);
> + kfree(worker);
> +
> + if (rc == -ETIMEDOUT) {
> + printk(KERN_ERR "%s() timed out\n", __func__);
> + rc = -EINVAL;
> + }
> +
> + return rc;
> +}
> +
> +static void
> +mwl8k_sta_notify(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
> + enum sta_notify_cmd cmd, const u8 *addr)
> +{
> +}
> +
> +struct mwl8k_conf_tx_worker {
> + struct mwl8k_work_struct header;
> + u16 queue;
> + const struct ieee80211_tx_queue_params *params;
> +};
> +
> +static int mwl8k_conf_tx_wt(struct work_struct *wt)
> +{
> + struct mwl8k_conf_tx_worker *worker =
> + (struct mwl8k_conf_tx_worker *)wt;
> +
> + struct ieee80211_hw *hw = worker->header.hw;
> + u16 queue = worker->queue;
> + const struct ieee80211_tx_queue_params *params = worker->params;
> +
> + struct mwl8k_priv *priv = hw->priv;
> + int rc = 0;
> +
> + if (priv->wmm_mode == MWL8K_WMM_DISABLE)
> + if (mwl8k_set_wmm(hw, MWL8K_WMM_ENABLE)) {
> + rc = -EINVAL;
> + goto mwl8k_conf_tx_exit;
> + }
> +
> + if (mwl8k_set_edca_params(hw, GET_TXQ(queue), params->cw_min,
> + params->cw_max, params->aifs, params->txop))
> + rc = -EINVAL;
> +mwl8k_conf_tx_exit:
> + return rc;
> +}
> +
> +static int mwl8k_conf_tx(struct ieee80211_hw *hw, u16 queue,
> + const struct ieee80211_tx_queue_params *params)
> +{
> + int rc;
> + struct mwl8k_conf_tx_worker *worker;
> + struct mwl8k_priv *priv = hw->priv;
> +
> + worker = kzalloc(sizeof(*worker), GFP_KERNEL);
> + if (worker == NULL)
> + return -ENOMEM;
> +
> + worker->queue = queue;
> + worker->params = params;
> + rc = mwl8k_queue_work(hw, &worker->header,
> + priv->config_wq, mwl8k_conf_tx_wt);
> + kfree(worker);
> + if (rc == -ETIMEDOUT) {
> + printk(KERN_ERR "%s() timed out\n", __func__);
> + rc = -EINVAL;
> + }
> + return rc;
> +}
> +
> +static int mwl8k_get_tx_stats(struct ieee80211_hw *hw,
> + struct ieee80211_tx_queue_stats *stats)
> +{
> + struct mwl8k_priv *priv = hw->priv;
> + struct mwl8k_tx_queue *txq;
> + int index;
> +
> + spin_lock_bh(&priv->tx_lock);
> + for (index = 0; index < MWL8K_TX_QUEUES; index++) {
> + txq = priv->txq + index;
> + memcpy(&stats[index], &txq->tx_stats,
> + sizeof(struct ieee80211_tx_queue_stats));
> + }
> + spin_unlock_bh(&priv->tx_lock);
> + return 0;
> +}
> +
> +#if USE_HW_CRYPTO
> +struct mwl8k_set_key_worker {
> + struct mwl8k_work_struct header;
> + enum set_key_cmd cmd;
> + const u8 *local_address;
> + const u8 *address;
> + struct ieee80211_key_conf *key;
> +};
> +
> +static int mwl8k_set_key_wt(struct work_struct *wt)
> +{
> + struct mwl8k_set_key_worker *worker =
> + (struct mwl8k_set_key_worker *)wt;
> +
> + struct ieee80211_hw *hw = worker->header.hw;
> + enum set_key_cmd cmd = worker->cmd;
> + const u8 *address = worker->address;
> + struct ieee80211_key_conf *key = worker->key;
> +
> + int rc = 0;
> +
> + rc = mwl8k_cmd_set_encryption(hw, cmd, address, key);
> + if (cmd == DISABLE_KEY)
> + rc = 0;
> +
> + return rc;
> +}
> +
> +static int mwl8k_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
> + const u8 *local_address, const u8 *address,
> + struct ieee80211_key_conf *key)
> +{
> + int rc;
> + struct mwl8k_set_key_worker *worker;
> + struct mwl8k_priv *priv = hw->priv;
> +
> + worker = kzalloc(sizeof(*worker), GFP_KERNEL);
> + if (worker == NULL)
> + return -ENOMEM;
> +
> + worker->cmd = cmd;
> + worker->local_address = local_address;
> + worker->address = address;
> + worker->key = key;
> + rc = mwl8k_queue_work(hw, &worker->header,
> + priv->config_wq, mwl8k_set_key_wt);
> + kfree(worker);
> + if (rc == -ETIMEDOUT) {
> + printk(KERN_ERR "%s() timed out\n", __func__);
> + rc = -EINVAL;
> + }
> + return rc;
> +}
> +#endif
> +
> +struct mwl8k_get_stats_worker {
> + struct mwl8k_work_struct header;
> + struct ieee80211_low_level_stats *stats;
> +};
> +
> +static int mwl8k_get_stats_wt(struct work_struct *wt)
> +{
> + struct mwl8k_get_stats_worker *worker =
> + (struct mwl8k_get_stats_worker *)wt;
> +
> + return mwl8k_cmd_802_11_get_stat(worker->header.hw, worker->stats);
> +}
> +
> +static int mwl8k_get_stats(struct ieee80211_hw *hw,
> + struct ieee80211_low_level_stats *stats)
> +{
> + int rc;
> + struct mwl8k_get_stats_worker *worker;
> + struct mwl8k_priv *priv = hw->priv;
> +
> + worker = kzalloc(sizeof(*worker), GFP_KERNEL);
> + if (worker == NULL)
> + return -ENOMEM;
> +
> + worker->stats = stats;
> + rc = mwl8k_queue_work(hw, &worker->header,
> + priv->config_wq, mwl8k_get_stats_wt);
> +
> + kfree(worker);
> + if (rc == -ETIMEDOUT) {
> + printk(KERN_ERR "%s() timed out\n", __func__);
> + rc = -EINVAL;
> + }
> +
> + 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,
> + .config_interface = mwl8k_config_interface,
> + .bss_info_changed = mwl8k_bss_info_changed,
> + .configure_filter = mwl8k_configure_filter,
> + .set_rts_threshold = mwl8k_set_rts_threshold,
> + .sta_notify = mwl8k_sta_notify,
> + .conf_tx = mwl8k_conf_tx,
> + .get_tx_stats = mwl8k_get_tx_stats,
> +#if USE_HW_CRYPTO
> + .set_key = mwl8k_set_key,
> +#endif
> + .get_stats = mwl8k_get_stats,
> +};
> +
> +static void mwl8k_tx_reclaim_handler(unsigned long data)
> +{
> + int i;
> + struct ieee80211_hw *hw = (struct ieee80211_hw *) data;
> + struct mwl8k_priv *priv = hw->priv;
> +
> + spin_lock_bh(&priv->tx_lock);
> + for (i = 0; i < MWL8K_TX_QUEUES; i++)
> + mwl8k_txq_reclaim(hw, i, 0);
> +
> + if (priv->tx_wait != NULL) {
> + int count = mwl8k_txq_busy(priv);
> + if (count == 0) {
> + complete(priv->tx_wait);
> + priv->tx_wait = NULL;
> + }
> + }
> + spin_unlock_bh(&priv->tx_lock);
> +}
> +
> +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;
> + u8 dtim = (MWL8K_VIF(priv->vif))->bss_info.dtim_period;
> +
> + mwl8k_finalize_join(priv->hw, skb->data, skb->len, dtim);
> + dev_kfree_skb(skb);
> +
> + priv->beacon_skb = NULL;
> +}
> +
> +static int __devinit mwl8k_probe(struct pci_dev *pdev,
> + const struct pci_device_id *id)
> +{
> + struct ieee80211_hw *hw;
> + struct mwl8k_priv *priv;
> + DECLARE_MAC_BUF(mac);
> + int rc;
> + int i;
> + u8 *fw;
> +
> + 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);
> + return rc;
> + }
> +
> + 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;
> + }
> +
> + priv = hw->priv;
> + priv->hw = hw;
> + priv->pdev = pdev;
> + priv->hostcmd_wait = NULL;
> + priv->tx_wait = NULL;
> + priv->inconfig = false;
> + priv->wep_enabled = 0;
> + priv->wmm_mode = false;
> + priv->pending_tx_pkts = 0;
> + strncpy(priv->name, MWL8K_NAME, sizeof(priv->name));
> +
> + spin_lock_init(&priv->fw_lock);
> +
> + SET_IEEE80211_DEV(hw, &pdev->dev);
> + pci_set_drvdata(pdev, hw);
> +
> + priv->regs = pci_iomap(pdev, 1, 0x10000);
> + if (priv->regs == NULL) {
> + printk(KERN_ERR "%s: Cannot map device memory\n", priv->name);
> + goto err_iounmap;
> + }
> +
> + memcpy(priv->channels, mwl8k_channels, sizeof(mwl8k_channels));
> + priv->band.band = IEEE80211_BAND_2GHZ;
> + priv->band.channels = priv->channels;
> + priv->band.n_channels = ARRAY_SIZE(mwl8k_channels);
> + priv->band.bitrates = priv->rates;
> + priv->band.n_bitrates = ARRAY_SIZE(mwl8k_rates);
> + hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band;
> +
> + BUILD_BUG_ON(sizeof(priv->rates) != sizeof(mwl8k_rates));
> + memcpy(priv->rates, mwl8k_rates, sizeof(mwl8k_rates));
> +
> + /*
> + * 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_QUEUES;
> +
> + /* Set rssi and noise values to dBm */
> + hw->flags |= (IEEE80211_HW_SIGNAL_DBM | IEEE80211_HW_NOISE_DBM);
> + hw->vif_data_size = sizeof(struct mwl8k_vif);
> + priv->vif = NULL;
> +
> + /* Set default radio state and preamble */
> + priv->radio_preamble = MWL8K_RADIO_DEFAULT_PREAMBLE;
> + priv->radio_state = MWL8K_RADIO_DISABLE;
> +
> + /* Finalize join worker */
> + INIT_WORK(&priv->finalize_join_worker, mwl8k_finalize_join_worker);
> +
> + /* TX reclaim tasklet */
> + tasklet_init(&priv->tx_reclaim_task,
> + mwl8k_tx_reclaim_handler, (unsigned long)hw);
> + tasklet_disable(&priv->tx_reclaim_task);
> +
> + /* Config workthread */
> + priv->config_wq = create_singlethread_workqueue("mwl8k_config");
> + if (priv->config_wq == NULL)
> + goto err_iounmap;
> +
> + /* Power management cookie */
> + priv->cookie = pci_alloc_consistent(priv->pdev, 4, &priv->cookie_dma);
> + if (priv->cookie == NULL)
> + goto err_iounmap;
> +
> + rc = mwl8k_rxq_init(hw, 0);
> + if (rc)
> + goto err_iounmap;
> + rxq_refill(hw, 0, INT_MAX);
> +
> + spin_lock_init(&priv->tx_lock);
> +
> + for (i = 0; i < MWL8K_TX_QUEUES; i++) {
> + rc = mwl8k_txq_init(hw, i);
> + if (rc)
> + goto err_free_queues;
> + }
> +
> + iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
> + priv->int_mask = 0;
> + iowrite32(priv->int_mask, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
> + iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL);
> + iowrite32(0xffffffff, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
> +
> + rc = request_irq(priv->pdev->irq, &mwl8k_interrupt,
> + IRQF_SHARED, MWL8K_NAME, hw);
> + if (rc) {
> + printk(KERN_ERR "%s: failed to register IRQ handler\n",
> + priv->name);
> + goto err_free_queues;
> + }
> +
> + /* Reset firmware and hardware */
> + mwl8k_hw_reset(priv);
> +
> + /* Ask userland hotplug daemon for the device firmware */
> + rc = mwl8k_request_firmware(priv);
> + if (rc) {
> + printk(KERN_ERR "%s: Firmware files not found\n", priv->name);
> + goto err_free_irq;
> + }
> +
> + /* Load firmware into hardware */
> + rc = mwl8k_load_firmware(priv);
> + if (rc) {
> + printk(KERN_ERR "%s: Cannot start firmware\n", priv->name);
> + goto err_stop_firmware;
> + }
> +
> + /* Reclaim memory once firmware is successfully loaded */
> + mwl8k_release_firmware(priv);
> +
> + /*
> + * Temporarily enable interrupts. Initial firmware host
> + * commands use interrupts and avoids polling. Disable
> + * interrupts when done.
> + */
> + priv->int_mask |= MWL8K_A2H_EVENTS;
> +
> + iowrite32(priv->int_mask, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
> +
> + /* Get config data, mac addrs etc */
> + rc = mwl8k_cmd_get_hw_spec(hw);
> + if (rc) {
> + printk(KERN_ERR "%s: Cannot initialise firmware\n", priv->name);
> + goto err_stop_firmware;
> + }
> +
> + /* Turn radio off */
> + rc = mwl8k_cmd_802_11_radio_control(hw, MWL8K_RADIO_DISABLE);
> + if (rc) {
> + printk(KERN_ERR "%s: Cannot disable\n", priv->name);
> + goto err_stop_firmware;
> + }
> +
> + /* Disable interrupts */
> + spin_lock_irq(&priv->tx_lock);
> + iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
> + spin_unlock_irq(&priv->tx_lock);
> + free_irq(priv->pdev->irq, hw);
> +
> + rc = ieee80211_register_hw(hw);
> + if (rc) {
> + printk(KERN_ERR "%s: Cannot register device\n", priv->name);
> + goto err_stop_firmware;
> + }
> +
> + fw = (u8 *)&priv->fw_rev;
> + printk(KERN_INFO "%s: 88W%u %s\n", priv->name, priv->part_num,
> + MWL8K_DESC);
> + printk(KERN_INFO "%s: Driver Ver:%s Firmware Ver:%u.%u.%u.%u\n",
> + priv->name, MWL8K_VERSION, fw[3], fw[2], fw[1], fw[0]);
> + printk(KERN_INFO "%s: MAC Address: %s\n", priv->name,
> + print_mac(mac, hw->wiphy->perm_addr));
> +
> + return 0;
> +
> +err_stop_firmware:
> + mwl8k_hw_reset(priv);
> + mwl8k_release_firmware(priv);
> +
> +err_free_irq:
> + spin_lock_irq(&priv->tx_lock);
> + iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
> + spin_unlock_irq(&priv->tx_lock);
> + free_irq(priv->pdev->irq, hw);
> +
> +err_free_queues:
> + for (i = 0; i < MWL8K_TX_QUEUES; i++)
> + mwl8k_txq_deinit(hw, i);
> + mwl8k_rxq_deinit(hw, 0);
> +
> +err_iounmap:
> + if (priv->cookie != NULL)
> + pci_free_consistent(priv->pdev, 4,
> + priv->cookie, priv->cookie_dma);
> +
> + if (priv->regs != NULL)
> + pci_iounmap(pdev, priv->regs);
> +
> + if (priv->config_wq != NULL)
> + destroy_workqueue(priv->config_wq);
> +
> + pci_set_drvdata(pdev, NULL);
> + ieee80211_free_hw(hw);
> +
> +err_free_reg:
> + pci_release_regions(pdev);
> + pci_disable_device(pdev);
> +
> + return rc;
> +}
> +
> +static void __devexit mwl8k_remove(struct pci_dev *pdev)
> +{
> + printk(KERN_ERR "===>%s(%u)\n", __func__, __LINE__);
> +}
> +
> +static void __devexit mwl8k_shutdown(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;
> +
> + ieee80211_stop_queues(hw);
> +
> + /* Remove tx reclaim tasklet */
> + tasklet_kill(&priv->tx_reclaim_task);
> +
> + /* Stop config thread */
> + destroy_workqueue(priv->config_wq);
> +
> + /* Stop hardware */
> + mwl8k_hw_reset(priv);
> +
> + /* Return all skbs to mac80211 */
> + for (i = 0; i < MWL8K_TX_QUEUES; i++)
> + mwl8k_txq_reclaim(hw, i, 1);
> +
> + ieee80211_unregister_hw(hw);
> +
> + for (i = 0; i < MWL8K_TX_QUEUES; i++)
> + mwl8k_txq_deinit(hw, i);
> +
> + mwl8k_rxq_deinit(hw, 0);
> +
> + pci_free_consistent(priv->pdev, 4,
> + priv->cookie, priv->cookie_dma);
> +
> + pci_iounmap(pdev, priv->regs);
> + 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_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);
> --
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