257 lines
7.7 KiB
C
257 lines
7.7 KiB
C
/* $FreeBSD$ */
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/*-
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* Copyright (c) 2004, 2005
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* Damien Bergamini <damien.bergamini@free.fr>. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice unmodified, this list of conditions, and the following
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* disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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struct iwi_rx_radiotap_header {
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struct ieee80211_radiotap_header wr_ihdr;
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uint8_t wr_flags;
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uint8_t wr_rate;
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uint16_t wr_chan_freq;
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uint16_t wr_chan_flags;
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int8_t wr_antsignal;
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int8_t wr_antnoise;
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uint8_t wr_antenna;
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};
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#define IWI_RX_RADIOTAP_PRESENT \
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((1 << IEEE80211_RADIOTAP_FLAGS) | \
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(1 << IEEE80211_RADIOTAP_RATE) | \
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(1 << IEEE80211_RADIOTAP_CHANNEL) | \
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(1 << IEEE80211_RADIOTAP_DBM_ANTSIGNAL) | \
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(1 << IEEE80211_RADIOTAP_DBM_ANTNOISE) | \
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(1 << IEEE80211_RADIOTAP_ANTENNA))
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struct iwi_tx_radiotap_header {
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struct ieee80211_radiotap_header wt_ihdr;
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uint8_t wt_flags;
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uint16_t wt_chan_freq;
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uint16_t wt_chan_flags;
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};
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#define IWI_TX_RADIOTAP_PRESENT \
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((1 << IEEE80211_RADIOTAP_FLAGS) | \
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(1 << IEEE80211_RADIOTAP_CHANNEL))
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struct iwi_cmd_ring {
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bus_dma_tag_t desc_dmat;
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bus_dmamap_t desc_map;
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bus_addr_t physaddr;
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struct iwi_cmd_desc *desc;
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int count;
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int queued;
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int cur;
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int next;
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};
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struct iwi_tx_data {
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bus_dmamap_t map;
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struct mbuf *m;
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struct ieee80211_node *ni;
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};
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struct iwi_tx_ring {
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bus_dma_tag_t desc_dmat;
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bus_dma_tag_t data_dmat;
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bus_dmamap_t desc_map;
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bus_addr_t physaddr;
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bus_addr_t csr_ridx;
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bus_addr_t csr_widx;
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struct iwi_tx_desc *desc;
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struct iwi_tx_data *data;
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int count;
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int queued;
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int cur;
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int next;
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};
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struct iwi_rx_data {
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bus_dmamap_t map;
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bus_addr_t physaddr;
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uint32_t reg;
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struct mbuf *m;
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};
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struct iwi_rx_ring {
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bus_dma_tag_t data_dmat;
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struct iwi_rx_data *data;
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int count;
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int cur;
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};
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struct iwi_node {
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struct ieee80211_node in_node;
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int in_station;
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#define IWI_MAX_IBSSNODE 32
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};
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struct iwi_fw {
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const struct firmware *fp; /* image handle */
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const char *data; /* firmware image data */
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size_t size; /* firmware image size */
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const char *name; /* associated image name */
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};
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struct iwi_vap {
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struct ieee80211vap iwi_vap;
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int (*iwi_newstate)(struct ieee80211vap *,
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enum ieee80211_state, int);
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};
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#define IWI_VAP(vap) ((struct iwi_vap *)(vap))
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struct iwi_softc {
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struct ifnet *sc_ifp;
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void (*sc_node_free)(struct ieee80211_node *);
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device_t sc_dev;
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struct mtx sc_mtx;
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uint8_t sc_mcast[IEEE80211_ADDR_LEN];
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struct unrhdr *sc_unr;
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uint32_t flags;
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#define IWI_FLAG_FW_INITED (1 << 0)
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#define IWI_FLAG_BUSY (1 << 3) /* busy sending a command */
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#define IWI_FLAG_ASSOCIATED (1 << 4) /* currently associated */
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#define IWI_FLAG_CHANNEL_SCAN (1 << 5)
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uint32_t fw_state;
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#define IWI_FW_IDLE 0
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#define IWI_FW_LOADING 1
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#define IWI_FW_ASSOCIATING 2
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#define IWI_FW_DISASSOCIATING 3
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#define IWI_FW_SCANNING 4
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struct iwi_cmd_ring cmdq;
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struct iwi_tx_ring txq[WME_NUM_AC];
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struct iwi_rx_ring rxq;
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struct resource *irq;
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struct resource *mem;
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bus_space_tag_t sc_st;
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bus_space_handle_t sc_sh;
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void *sc_ih;
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int mem_rid;
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int irq_rid;
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/*
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* The card needs external firmware images to work, which is made of a
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* bootloader, microcode and firmware proper. In version 3.00 and
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* above, all pieces are contained in a single image, preceded by a
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* struct iwi_firmware_hdr indicating the size of the 3 pieces.
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* Old firmware < 3.0 has separate boot and ucode, so we need to
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* load all of them explicitly.
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* To avoid issues related to fragmentation, we keep the block of
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* dma-ble memory around until detach time, and reallocate it when
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* it becomes too small. fw_dma_size is the size currently allocated.
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*/
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int fw_dma_size;
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uint32_t fw_flags; /* allocation status */
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#define IWI_FW_HAVE_DMAT 0x01
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#define IWI_FW_HAVE_MAP 0x02
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#define IWI_FW_HAVE_PHY 0x04
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bus_dma_tag_t fw_dmat;
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bus_dmamap_t fw_map;
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bus_addr_t fw_physaddr;
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void *fw_virtaddr;
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enum ieee80211_opmode fw_mode; /* mode of current firmware */
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struct iwi_fw fw_boot; /* boot firmware */
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struct iwi_fw fw_uc; /* microcode */
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struct iwi_fw fw_fw; /* operating mode support */
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int curchan; /* current h/w channel # */
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int antenna;
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int bluetooth;
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struct iwi_associate assoc;
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struct iwi_wme_params wme[3];
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u_int sc_scangen;
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struct task sc_radiontask; /* radio on processing */
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struct task sc_radiofftask; /* radio off processing */
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struct task sc_restarttask; /* restart adapter processing */
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struct task sc_disassoctask;
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struct task sc_wmetask; /* set wme parameters */
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unsigned int sc_softled : 1, /* enable LED gpio status */
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sc_ledstate: 1, /* LED on/off state */
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sc_blinking: 1; /* LED blink operation active */
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u_int sc_nictype; /* NIC type from EEPROM */
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u_int sc_ledpin; /* mask for activity LED */
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u_int sc_ledidle; /* idle polling interval */
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int sc_ledevent; /* time of last LED event */
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u_int8_t sc_rxrate; /* current rx rate for LED */
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u_int8_t sc_rxrix;
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u_int8_t sc_txrate; /* current tx rate for LED */
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u_int8_t sc_txrix;
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u_int16_t sc_ledoff; /* off time for current blink */
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struct callout sc_ledtimer; /* led off timer */
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struct callout sc_wdtimer; /* watchdog timer */
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struct callout sc_rftimer; /* rfkill timer */
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int sc_tx_timer;
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int sc_state_timer; /* firmware state timer */
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int sc_busy_timer; /* firmware cmd timer */
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struct iwi_rx_radiotap_header sc_rxtap;
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struct iwi_tx_radiotap_header sc_txtap;
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};
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#define IWI_STATE_BEGIN(_sc, _state) do { \
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KASSERT(_sc->fw_state == IWI_FW_IDLE, \
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("iwi firmware not idle, state %s", iwi_fw_states[_sc->fw_state]));\
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_sc->fw_state = _state; \
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_sc->sc_state_timer = 5; \
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DPRINTF(("enter %s state\n", iwi_fw_states[_state])); \
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} while (0)
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#define IWI_STATE_END(_sc, _state) do { \
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if (_sc->fw_state == _state) \
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DPRINTF(("exit %s state\n", iwi_fw_states[_state])); \
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else \
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DPRINTF(("expected %s state, got %s\n", \
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iwi_fw_states[_state], iwi_fw_states[_sc->fw_state])); \
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_sc->fw_state = IWI_FW_IDLE; \
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wakeup(_sc); \
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_sc->sc_state_timer = 0; \
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} while (0)
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/*
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* NB.: This models the only instance of async locking in iwi_init_locked
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* and must be kept in sync.
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*/
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#define IWI_LOCK_INIT(sc) \
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mtx_init(&(sc)->sc_mtx, device_get_nameunit((sc)->sc_dev), \
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MTX_NETWORK_LOCK, MTX_DEF)
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#define IWI_LOCK_DESTROY(sc) mtx_destroy(&(sc)->sc_mtx)
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#define IWI_LOCK_DECL int __waslocked = 0
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#define IWI_LOCK_ASSERT(sc) mtx_assert(&(sc)->sc_mtx, MA_OWNED)
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#define IWI_LOCK(sc) do { \
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if (!(__waslocked = mtx_owned(&(sc)->sc_mtx))) \
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mtx_lock(&(sc)->sc_mtx); \
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} while (0)
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#define IWI_UNLOCK(sc) do { \
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if (!__waslocked) \
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mtx_unlock(&(sc)->sc_mtx); \
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} while (0)
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