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freebsd-skq/sys/dev/bwi/if_bwi.c
weongyo f954d3e94b Initializes the ratectl for a node when the state is changed to RUN. 
This prevents a kernel fault by dividing with zero because the initial
rate was 0 and didn't be initialized.

Tested by:	Warren Block <wblock at wonkity.com>
MFC after:	3 days
2010-06-29 21:56:42 +00:00

4073 lines
98 KiB
C
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/*
* Copyright (c) 2007 The DragonFly Project. All rights reserved.
*
* This code is derived from software contributed to The DragonFly Project
* by Sepherosa Ziehau <sepherosa@gmail.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name of The DragonFly Project nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific, prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $DragonFly: src/sys/dev/netif/bwi/if_bwi.c,v 1.19 2008/02/15 11:15:38 sephe Exp $
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include "opt_inet.h"
#include "opt_bwi.h"
#include <sys/param.h>
#include <sys/endian.h>
#include <sys/kernel.h>
#include <sys/bus.h>
#include <sys/malloc.h>
#include <sys/proc.h>
#include <sys/rman.h>
#include <sys/socket.h>
#include <sys/sockio.h>
#include <sys/sysctl.h>
#include <sys/systm.h>
#include <sys/taskqueue.h>
#include <net/if.h>
#include <net/if_dl.h>
#include <net/if_media.h>
#include <net/if_types.h>
#include <net/if_arp.h>
#include <net/ethernet.h>
#include <net/if_llc.h>
#include <net80211/ieee80211_var.h>
#include <net80211/ieee80211_radiotap.h>
#include <net80211/ieee80211_regdomain.h>
#include <net80211/ieee80211_phy.h>
#include <net80211/ieee80211_ratectl.h>
#include <net/bpf.h>
#ifdef INET
#include <netinet/in.h>
#include <netinet/if_ether.h>
#endif
#include <machine/bus.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcireg.h>
#include <dev/bwi/bitops.h>
#include <dev/bwi/if_bwireg.h>
#include <dev/bwi/if_bwivar.h>
#include <dev/bwi/bwimac.h>
#include <dev/bwi/bwirf.h>
struct bwi_clock_freq {
u_int clkfreq_min;
u_int clkfreq_max;
};
struct bwi_myaddr_bssid {
uint8_t myaddr[IEEE80211_ADDR_LEN];
uint8_t bssid[IEEE80211_ADDR_LEN];
} __packed;
static struct ieee80211vap *bwi_vap_create(struct ieee80211com *,
const char [IFNAMSIZ], int, int, int,
const uint8_t [IEEE80211_ADDR_LEN],
const uint8_t [IEEE80211_ADDR_LEN]);
static void bwi_vap_delete(struct ieee80211vap *);
static void bwi_init(void *);
static int bwi_ioctl(struct ifnet *, u_long, caddr_t);
static void bwi_start(struct ifnet *);
static void bwi_start_locked(struct ifnet *);
static int bwi_raw_xmit(struct ieee80211_node *, struct mbuf *,
const struct ieee80211_bpf_params *);
static void bwi_watchdog(void *);
static void bwi_scan_start(struct ieee80211com *);
static void bwi_set_channel(struct ieee80211com *);
static void bwi_scan_end(struct ieee80211com *);
static int bwi_newstate(struct ieee80211vap *, enum ieee80211_state, int);
static void bwi_updateslot(struct ifnet *);
static int bwi_media_change(struct ifnet *);
static void bwi_calibrate(void *);
static int bwi_calc_rssi(struct bwi_softc *, const struct bwi_rxbuf_hdr *);
static int bwi_calc_noise(struct bwi_softc *);
static __inline uint8_t bwi_ofdm_plcp2rate(const uint32_t *);
static __inline uint8_t bwi_ds_plcp2rate(const struct ieee80211_ds_plcp_hdr *);
static void bwi_rx_radiotap(struct bwi_softc *, struct mbuf *,
struct bwi_rxbuf_hdr *, const void *, int, int, int);
static void bwi_restart(void *, int);
static void bwi_init_statechg(struct bwi_softc *, int);
static void bwi_stop(struct bwi_softc *, int);
static void bwi_stop_locked(struct bwi_softc *, int);
static int bwi_newbuf(struct bwi_softc *, int, int);
static int bwi_encap(struct bwi_softc *, int, struct mbuf *,
struct ieee80211_node *);
static int bwi_encap_raw(struct bwi_softc *, int, struct mbuf *,
struct ieee80211_node *,
const struct ieee80211_bpf_params *);
static void bwi_init_rxdesc_ring32(struct bwi_softc *, uint32_t,
bus_addr_t, int, int);
static void bwi_reset_rx_ring32(struct bwi_softc *, uint32_t);
static int bwi_init_tx_ring32(struct bwi_softc *, int);
static int bwi_init_rx_ring32(struct bwi_softc *);
static int bwi_init_txstats32(struct bwi_softc *);
static void bwi_free_tx_ring32(struct bwi_softc *, int);
static void bwi_free_rx_ring32(struct bwi_softc *);
static void bwi_free_txstats32(struct bwi_softc *);
static void bwi_setup_rx_desc32(struct bwi_softc *, int, bus_addr_t, int);
static void bwi_setup_tx_desc32(struct bwi_softc *, struct bwi_ring_data *,
int, bus_addr_t, int);
static int bwi_rxeof32(struct bwi_softc *);
static void bwi_start_tx32(struct bwi_softc *, uint32_t, int);
static void bwi_txeof_status32(struct bwi_softc *);
static int bwi_init_tx_ring64(struct bwi_softc *, int);
static int bwi_init_rx_ring64(struct bwi_softc *);
static int bwi_init_txstats64(struct bwi_softc *);
static void bwi_free_tx_ring64(struct bwi_softc *, int);
static void bwi_free_rx_ring64(struct bwi_softc *);
static void bwi_free_txstats64(struct bwi_softc *);
static void bwi_setup_rx_desc64(struct bwi_softc *, int, bus_addr_t, int);
static void bwi_setup_tx_desc64(struct bwi_softc *, struct bwi_ring_data *,
int, bus_addr_t, int);
static int bwi_rxeof64(struct bwi_softc *);
static void bwi_start_tx64(struct bwi_softc *, uint32_t, int);
static void bwi_txeof_status64(struct bwi_softc *);
static int bwi_rxeof(struct bwi_softc *, int);
static void _bwi_txeof(struct bwi_softc *, uint16_t, int, int);
static void bwi_txeof(struct bwi_softc *);
static void bwi_txeof_status(struct bwi_softc *, int);
static void bwi_enable_intrs(struct bwi_softc *, uint32_t);
static void bwi_disable_intrs(struct bwi_softc *, uint32_t);
static int bwi_dma_alloc(struct bwi_softc *);
static void bwi_dma_free(struct bwi_softc *);
static int bwi_dma_ring_alloc(struct bwi_softc *, bus_dma_tag_t,
struct bwi_ring_data *, bus_size_t,
uint32_t);
static int bwi_dma_mbuf_create(struct bwi_softc *);
static void bwi_dma_mbuf_destroy(struct bwi_softc *, int, int);
static int bwi_dma_txstats_alloc(struct bwi_softc *, uint32_t, bus_size_t);
static void bwi_dma_txstats_free(struct bwi_softc *);
static void bwi_dma_ring_addr(void *, bus_dma_segment_t *, int, int);
static void bwi_dma_buf_addr(void *, bus_dma_segment_t *, int,
bus_size_t, int);
static void bwi_power_on(struct bwi_softc *, int);
static int bwi_power_off(struct bwi_softc *, int);
static int bwi_set_clock_mode(struct bwi_softc *, enum bwi_clock_mode);
static int bwi_set_clock_delay(struct bwi_softc *);
static void bwi_get_clock_freq(struct bwi_softc *, struct bwi_clock_freq *);
static int bwi_get_pwron_delay(struct bwi_softc *sc);
static void bwi_set_addr_filter(struct bwi_softc *, uint16_t,
const uint8_t *);
static void bwi_set_bssid(struct bwi_softc *, const uint8_t *);
static void bwi_get_card_flags(struct bwi_softc *);
static void bwi_get_eaddr(struct bwi_softc *, uint16_t, uint8_t *);
static int bwi_bus_attach(struct bwi_softc *);
static int bwi_bbp_attach(struct bwi_softc *);
static int bwi_bbp_power_on(struct bwi_softc *, enum bwi_clock_mode);
static void bwi_bbp_power_off(struct bwi_softc *);
static const char *bwi_regwin_name(const struct bwi_regwin *);
static uint32_t bwi_regwin_disable_bits(struct bwi_softc *);
static void bwi_regwin_info(struct bwi_softc *, uint16_t *, uint8_t *);
static int bwi_regwin_select(struct bwi_softc *, int);
static void bwi_led_attach(struct bwi_softc *);
static void bwi_led_newstate(struct bwi_softc *, enum ieee80211_state);
static void bwi_led_event(struct bwi_softc *, int);
static void bwi_led_blink_start(struct bwi_softc *, int, int);
static void bwi_led_blink_next(void *);
static void bwi_led_blink_end(void *);
static const struct {
uint16_t did_min;
uint16_t did_max;
uint16_t bbp_id;
} bwi_bbpid_map[] = {
{ 0x4301, 0x4301, 0x4301 },
{ 0x4305, 0x4307, 0x4307 },
{ 0x4403, 0x4403, 0x4402 },
{ 0x4610, 0x4615, 0x4610 },
{ 0x4710, 0x4715, 0x4710 },
{ 0x4720, 0x4725, 0x4309 }
};
static const struct {
uint16_t bbp_id;
int nregwin;
} bwi_regwin_count[] = {
{ 0x4301, 5 },
{ 0x4306, 6 },
{ 0x4307, 5 },
{ 0x4310, 8 },
{ 0x4401, 3 },
{ 0x4402, 3 },
{ 0x4610, 9 },
{ 0x4704, 9 },
{ 0x4710, 9 },
{ 0x5365, 7 }
};
#define CLKSRC(src) \
[BWI_CLKSRC_ ## src] = { \
.freq_min = BWI_CLKSRC_ ##src## _FMIN, \
.freq_max = BWI_CLKSRC_ ##src## _FMAX \
}
static const struct {
u_int freq_min;
u_int freq_max;
} bwi_clkfreq[BWI_CLKSRC_MAX] = {
CLKSRC(LP_OSC),
CLKSRC(CS_OSC),
CLKSRC(PCI)
};
#undef CLKSRC
#define VENDOR_LED_ACT(vendor) \
{ \
.vid = PCI_VENDOR_##vendor, \
.led_act = { BWI_VENDOR_LED_ACT_##vendor } \
}
static const struct {
#define PCI_VENDOR_COMPAQ 0x0e11
#define PCI_VENDOR_LINKSYS 0x1737
uint16_t vid;
uint8_t led_act[BWI_LED_MAX];
} bwi_vendor_led_act[] = {
VENDOR_LED_ACT(COMPAQ),
VENDOR_LED_ACT(LINKSYS)
#undef PCI_VENDOR_LINKSYS
#undef PCI_VENDOR_COMPAQ
};
static const uint8_t bwi_default_led_act[BWI_LED_MAX] =
{ BWI_VENDOR_LED_ACT_DEFAULT };
#undef VENDOR_LED_ACT
static const struct {
int on_dur;
int off_dur;
} bwi_led_duration[109] = {
[0] = { 400, 100 },
[2] = { 150, 75 },
[4] = { 90, 45 },
[11] = { 66, 34 },
[12] = { 53, 26 },
[18] = { 42, 21 },
[22] = { 35, 17 },
[24] = { 32, 16 },
[36] = { 21, 10 },
[48] = { 16, 8 },
[72] = { 11, 5 },
[96] = { 9, 4 },
[108] = { 7, 3 }
};
#ifdef BWI_DEBUG
#ifdef BWI_DEBUG_VERBOSE
static uint32_t bwi_debug = BWI_DBG_ATTACH | BWI_DBG_INIT | BWI_DBG_TXPOWER;
#else
static uint32_t bwi_debug;
#endif
TUNABLE_INT("hw.bwi.debug", (int *)&bwi_debug);
#endif /* BWI_DEBUG */
static const uint8_t bwi_zero_addr[IEEE80211_ADDR_LEN];
uint16_t
bwi_read_sprom(struct bwi_softc *sc, uint16_t ofs)
{
return CSR_READ_2(sc, ofs + BWI_SPROM_START);
}
static __inline void
bwi_setup_desc32(struct bwi_softc *sc, struct bwi_desc32 *desc_array,
int ndesc, int desc_idx, bus_addr_t paddr, int buf_len,
int tx)
{
struct bwi_desc32 *desc = &desc_array[desc_idx];
uint32_t ctrl, addr, addr_hi, addr_lo;
addr_lo = __SHIFTOUT(paddr, BWI_DESC32_A_ADDR_MASK);
addr_hi = __SHIFTOUT(paddr, BWI_DESC32_A_FUNC_MASK);
addr = __SHIFTIN(addr_lo, BWI_DESC32_A_ADDR_MASK) |
__SHIFTIN(BWI_DESC32_A_FUNC_TXRX, BWI_DESC32_A_FUNC_MASK);
ctrl = __SHIFTIN(buf_len, BWI_DESC32_C_BUFLEN_MASK) |
__SHIFTIN(addr_hi, BWI_DESC32_C_ADDRHI_MASK);
if (desc_idx == ndesc - 1)
ctrl |= BWI_DESC32_C_EOR;
if (tx) {
/* XXX */
ctrl |= BWI_DESC32_C_FRAME_START |
BWI_DESC32_C_FRAME_END |
BWI_DESC32_C_INTR;
}
desc->addr = htole32(addr);
desc->ctrl = htole32(ctrl);
}
int
bwi_attach(struct bwi_softc *sc)
{
struct ieee80211com *ic;
device_t dev = sc->sc_dev;
struct ifnet *ifp;
struct bwi_mac *mac;
struct bwi_phy *phy;
int i, error;
uint8_t bands;
uint8_t macaddr[IEEE80211_ADDR_LEN];
BWI_LOCK_INIT(sc);
/*
* Initialize taskq and various tasks
*/
sc->sc_tq = taskqueue_create("bwi_taskq", M_NOWAIT | M_ZERO,
taskqueue_thread_enqueue, &sc->sc_tq);
taskqueue_start_threads(&sc->sc_tq, 1, PI_NET, "%s taskq",
device_get_nameunit(dev));
TASK_INIT(&sc->sc_restart_task, 0, bwi_restart, sc);
callout_init_mtx(&sc->sc_calib_ch, &sc->sc_mtx, 0);
/*
* Initialize sysctl variables
*/
sc->sc_fw_version = BWI_FW_VERSION3;
sc->sc_led_idle = (2350 * hz) / 1000;
sc->sc_led_blink = 1;
sc->sc_txpwr_calib = 1;
#ifdef BWI_DEBUG
sc->sc_debug = bwi_debug;
#endif
bwi_power_on(sc, 1);
error = bwi_bbp_attach(sc);
if (error)
goto fail;
error = bwi_bbp_power_on(sc, BWI_CLOCK_MODE_FAST);
if (error)
goto fail;
if (BWI_REGWIN_EXIST(&sc->sc_com_regwin)) {
error = bwi_set_clock_delay(sc);
if (error)
goto fail;
error = bwi_set_clock_mode(sc, BWI_CLOCK_MODE_FAST);
if (error)
goto fail;
error = bwi_get_pwron_delay(sc);
if (error)
goto fail;
}
error = bwi_bus_attach(sc);
if (error)
goto fail;
bwi_get_card_flags(sc);
bwi_led_attach(sc);
for (i = 0; i < sc->sc_nmac; ++i) {
struct bwi_regwin *old;
mac = &sc->sc_mac[i];
error = bwi_regwin_switch(sc, &mac->mac_regwin, &old);
if (error)
goto fail;
error = bwi_mac_lateattach(mac);
if (error)
goto fail;
error = bwi_regwin_switch(sc, old, NULL);
if (error)
goto fail;
}
/*
* XXX First MAC is known to exist
* TODO2
*/
mac = &sc->sc_mac[0];
phy = &mac->mac_phy;
bwi_bbp_power_off(sc);
error = bwi_dma_alloc(sc);
if (error)
goto fail;
ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211);
if (ifp == NULL) {
device_printf(dev, "can not if_alloc()\n");
error = ENOSPC;
goto fail;
}
ic = ifp->if_l2com;
/* set these up early for if_printf use */
if_initname(ifp, device_get_name(dev), device_get_unit(dev));
ifp->if_softc = sc;
ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
ifp->if_init = bwi_init;
ifp->if_ioctl = bwi_ioctl;
ifp->if_start = bwi_start;
IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen);
ifp->if_snd.ifq_drv_maxlen = ifqmaxlen;
IFQ_SET_READY(&ifp->if_snd);
callout_init_mtx(&sc->sc_watchdog_timer, &sc->sc_mtx, 0);
/*
* Setup ratesets, phytype, channels and get MAC address
*/
bands = 0;
if (phy->phy_mode == IEEE80211_MODE_11B ||
phy->phy_mode == IEEE80211_MODE_11G) {
setbit(&bands, IEEE80211_MODE_11B);
if (phy->phy_mode == IEEE80211_MODE_11B) {
ic->ic_phytype = IEEE80211_T_DS;
} else {
ic->ic_phytype = IEEE80211_T_OFDM;
setbit(&bands, IEEE80211_MODE_11G);
}
bwi_get_eaddr(sc, BWI_SPROM_11BG_EADDR, macaddr);
if (IEEE80211_IS_MULTICAST(macaddr)) {
bwi_get_eaddr(sc, BWI_SPROM_11A_EADDR, macaddr);
if (IEEE80211_IS_MULTICAST(macaddr)) {
device_printf(dev,
"invalid MAC address: %6D\n",
macaddr, ":");
}
}
} else if (phy->phy_mode == IEEE80211_MODE_11A) {
/* TODO:11A */
setbit(&bands, IEEE80211_MODE_11A);
error = ENXIO;
goto fail;
} else {
panic("unknown phymode %d\n", phy->phy_mode);
}
/* Get locale */
sc->sc_locale = __SHIFTOUT(bwi_read_sprom(sc, BWI_SPROM_CARD_INFO),
BWI_SPROM_CARD_INFO_LOCALE);
DPRINTF(sc, BWI_DBG_ATTACH, "locale: %d\n", sc->sc_locale);
/* XXX use locale */
ieee80211_init_channels(ic, NULL, &bands);
ic->ic_ifp = ifp;
ic->ic_caps = IEEE80211_C_STA |
IEEE80211_C_SHSLOT |
IEEE80211_C_SHPREAMBLE |
IEEE80211_C_WPA |
IEEE80211_C_BGSCAN |
IEEE80211_C_MONITOR;
ic->ic_opmode = IEEE80211_M_STA;
ieee80211_ifattach(ic, macaddr);
ic->ic_headroom = sizeof(struct bwi_txbuf_hdr);
/* override default methods */
ic->ic_vap_create = bwi_vap_create;
ic->ic_vap_delete = bwi_vap_delete;
ic->ic_raw_xmit = bwi_raw_xmit;
ic->ic_updateslot = bwi_updateslot;
ic->ic_scan_start = bwi_scan_start;
ic->ic_scan_end = bwi_scan_end;
ic->ic_set_channel = bwi_set_channel;
sc->sc_rates = ieee80211_get_ratetable(ic->ic_curchan);
ieee80211_radiotap_attach(ic,
&sc->sc_tx_th.wt_ihdr, sizeof(sc->sc_tx_th),
BWI_TX_RADIOTAP_PRESENT,
&sc->sc_rx_th.wr_ihdr, sizeof(sc->sc_rx_th),
BWI_RX_RADIOTAP_PRESENT);
/*
* Add sysctl nodes
*/
SYSCTL_ADD_UINT(device_get_sysctl_ctx(dev),
SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
"fw_version", CTLFLAG_RD, &sc->sc_fw_version, 0,
"Firmware version");
SYSCTL_ADD_UINT(device_get_sysctl_ctx(dev),
SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
"led_idle", CTLFLAG_RW, &sc->sc_led_idle, 0,
"# ticks before LED enters idle state");
SYSCTL_ADD_INT(device_get_sysctl_ctx(dev),
SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
"led_blink", CTLFLAG_RW, &sc->sc_led_blink, 0,
"Allow LED to blink");
SYSCTL_ADD_INT(device_get_sysctl_ctx(dev),
SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
"txpwr_calib", CTLFLAG_RW, &sc->sc_txpwr_calib, 0,
"Enable software TX power calibration");
#ifdef BWI_DEBUG
SYSCTL_ADD_UINT(device_get_sysctl_ctx(dev),
SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
"debug", CTLFLAG_RW, &sc->sc_debug, 0, "Debug flags");
#endif
if (bootverbose)
ieee80211_announce(ic);
return (0);
fail:
BWI_LOCK_DESTROY(sc);
return (error);
}
int
bwi_detach(struct bwi_softc *sc)
{
struct ifnet *ifp = sc->sc_ifp;
struct ieee80211com *ic = ifp->if_l2com;
int i;
bwi_stop(sc, 1);
callout_drain(&sc->sc_led_blink_ch);
callout_drain(&sc->sc_calib_ch);
callout_drain(&sc->sc_watchdog_timer);
ieee80211_ifdetach(ic);
for (i = 0; i < sc->sc_nmac; ++i)
bwi_mac_detach(&sc->sc_mac[i]);
bwi_dma_free(sc);
if_free(ifp);
taskqueue_free(sc->sc_tq);
BWI_LOCK_DESTROY(sc);
return (0);
}
static struct ieee80211vap *
bwi_vap_create(struct ieee80211com *ic,
const char name[IFNAMSIZ], int unit, int opmode, int flags,
const uint8_t bssid[IEEE80211_ADDR_LEN],
const uint8_t mac[IEEE80211_ADDR_LEN])
{
struct bwi_vap *bvp;
struct ieee80211vap *vap;
if (!TAILQ_EMPTY(&ic->ic_vaps)) /* only one at a time */
return NULL;
bvp = (struct bwi_vap *) malloc(sizeof(struct bwi_vap),
M_80211_VAP, M_WAITOK | M_ZERO);
if (bvp == NULL)
return NULL;
vap = &bvp->bv_vap;
/* enable s/w bmiss handling for sta mode */
ieee80211_vap_setup(ic, vap, name, unit, opmode,
flags | IEEE80211_CLONE_NOBEACONS, bssid, mac);
/* override default methods */
bvp->bv_newstate = vap->iv_newstate;
vap->iv_newstate = bwi_newstate;
#if 0
vap->iv_update_beacon = bwi_beacon_update;
#endif
ieee80211_ratectl_init(vap);
/* complete setup */
ieee80211_vap_attach(vap, bwi_media_change, ieee80211_media_status);
ic->ic_opmode = opmode;
return vap;
}
static void
bwi_vap_delete(struct ieee80211vap *vap)
{
struct bwi_vap *bvp = BWI_VAP(vap);
ieee80211_ratectl_deinit(vap);
ieee80211_vap_detach(vap);
free(bvp, M_80211_VAP);
}
void
bwi_suspend(struct bwi_softc *sc)
{
bwi_stop(sc, 1);
}
void
bwi_resume(struct bwi_softc *sc)
{
struct ifnet *ifp = sc->sc_ifp;
if (ifp->if_flags & IFF_UP)
bwi_init(sc);
}
int
bwi_shutdown(struct bwi_softc *sc)
{
bwi_stop(sc, 1);
return 0;
}
static void
bwi_power_on(struct bwi_softc *sc, int with_pll)
{
uint32_t gpio_in, gpio_out, gpio_en;
uint16_t status;
gpio_in = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_IN, 4);
if (gpio_in & BWI_PCIM_GPIO_PWR_ON)
goto back;
gpio_out = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, 4);
gpio_en = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_ENABLE, 4);
gpio_out |= BWI_PCIM_GPIO_PWR_ON;
gpio_en |= BWI_PCIM_GPIO_PWR_ON;
if (with_pll) {
/* Turn off PLL first */
gpio_out |= BWI_PCIM_GPIO_PLL_PWR_OFF;
gpio_en |= BWI_PCIM_GPIO_PLL_PWR_OFF;
}
pci_write_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, gpio_out, 4);
pci_write_config(sc->sc_dev, BWI_PCIR_GPIO_ENABLE, gpio_en, 4);
DELAY(1000);
if (with_pll) {
/* Turn on PLL */
gpio_out &= ~BWI_PCIM_GPIO_PLL_PWR_OFF;
pci_write_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, gpio_out, 4);
DELAY(5000);
}
back:
/* Clear "Signaled Target Abort" */
status = pci_read_config(sc->sc_dev, PCIR_STATUS, 2);
status &= ~PCIM_STATUS_STABORT;
pci_write_config(sc->sc_dev, PCIR_STATUS, status, 2);
}
static int
bwi_power_off(struct bwi_softc *sc, int with_pll)
{
uint32_t gpio_out, gpio_en;
pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_IN, 4); /* dummy read */
gpio_out = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, 4);
gpio_en = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_ENABLE, 4);
gpio_out &= ~BWI_PCIM_GPIO_PWR_ON;
gpio_en |= BWI_PCIM_GPIO_PWR_ON;
if (with_pll) {
gpio_out |= BWI_PCIM_GPIO_PLL_PWR_OFF;
gpio_en |= BWI_PCIM_GPIO_PLL_PWR_OFF;
}
pci_write_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, gpio_out, 4);
pci_write_config(sc->sc_dev, BWI_PCIR_GPIO_ENABLE, gpio_en, 4);
return 0;
}
int
bwi_regwin_switch(struct bwi_softc *sc, struct bwi_regwin *rw,
struct bwi_regwin **old_rw)
{
int error;
if (old_rw != NULL)
*old_rw = NULL;
if (!BWI_REGWIN_EXIST(rw))
return EINVAL;
if (sc->sc_cur_regwin != rw) {
error = bwi_regwin_select(sc, rw->rw_id);
if (error) {
device_printf(sc->sc_dev, "can't select regwin %d\n",
rw->rw_id);
return error;
}
}
if (old_rw != NULL)
*old_rw = sc->sc_cur_regwin;
sc->sc_cur_regwin = rw;
return 0;
}
static int
bwi_regwin_select(struct bwi_softc *sc, int id)
{
uint32_t win = BWI_PCIM_REGWIN(id);
int i;
#define RETRY_MAX 50
for (i = 0; i < RETRY_MAX; ++i) {
pci_write_config(sc->sc_dev, BWI_PCIR_SEL_REGWIN, win, 4);
if (pci_read_config(sc->sc_dev, BWI_PCIR_SEL_REGWIN, 4) == win)
return 0;
DELAY(10);
}
#undef RETRY_MAX
return ENXIO;
}
static void
bwi_regwin_info(struct bwi_softc *sc, uint16_t *type, uint8_t *rev)
{
uint32_t val;
val = CSR_READ_4(sc, BWI_ID_HI);
*type = BWI_ID_HI_REGWIN_TYPE(val);
*rev = BWI_ID_HI_REGWIN_REV(val);
DPRINTF(sc, BWI_DBG_ATTACH, "regwin: type 0x%03x, rev %d, "
"vendor 0x%04x\n", *type, *rev,
__SHIFTOUT(val, BWI_ID_HI_REGWIN_VENDOR_MASK));
}
static int
bwi_bbp_attach(struct bwi_softc *sc)
{
#define N(arr) (int)(sizeof(arr) / sizeof(arr[0]))
uint16_t bbp_id, rw_type;
uint8_t rw_rev;
uint32_t info;
int error, nregwin, i;
/*
* Get 0th regwin information
* NOTE: 0th regwin should exist
*/
error = bwi_regwin_select(sc, 0);
if (error) {
device_printf(sc->sc_dev, "can't select regwin 0\n");
return error;
}
bwi_regwin_info(sc, &rw_type, &rw_rev);
/*
* Find out BBP id
*/
bbp_id = 0;
info = 0;
if (rw_type == BWI_REGWIN_T_COM) {
info = CSR_READ_4(sc, BWI_INFO);
bbp_id = __SHIFTOUT(info, BWI_INFO_BBPID_MASK);
BWI_CREATE_REGWIN(&sc->sc_com_regwin, 0, rw_type, rw_rev);
sc->sc_cap = CSR_READ_4(sc, BWI_CAPABILITY);
} else {
for (i = 0; i < N(bwi_bbpid_map); ++i) {
if (sc->sc_pci_did >= bwi_bbpid_map[i].did_min &&
sc->sc_pci_did <= bwi_bbpid_map[i].did_max) {
bbp_id = bwi_bbpid_map[i].bbp_id;
break;
}
}
if (bbp_id == 0) {
device_printf(sc->sc_dev, "no BBP id for device id "
"0x%04x\n", sc->sc_pci_did);
return ENXIO;
}
info = __SHIFTIN(sc->sc_pci_revid, BWI_INFO_BBPREV_MASK) |
__SHIFTIN(0, BWI_INFO_BBPPKG_MASK);
}
/*
* Find out number of regwins
*/
nregwin = 0;
if (rw_type == BWI_REGWIN_T_COM && rw_rev >= 4) {
nregwin = __SHIFTOUT(info, BWI_INFO_NREGWIN_MASK);
} else {
for (i = 0; i < N(bwi_regwin_count); ++i) {
if (bwi_regwin_count[i].bbp_id == bbp_id) {
nregwin = bwi_regwin_count[i].nregwin;
break;
}
}
if (nregwin == 0) {
device_printf(sc->sc_dev, "no number of win for "
"BBP id 0x%04x\n", bbp_id);
return ENXIO;
}
}
/* Record BBP id/rev for later using */
sc->sc_bbp_id = bbp_id;
sc->sc_bbp_rev = __SHIFTOUT(info, BWI_INFO_BBPREV_MASK);
sc->sc_bbp_pkg = __SHIFTOUT(info, BWI_INFO_BBPPKG_MASK);
device_printf(sc->sc_dev, "BBP: id 0x%04x, rev 0x%x, pkg %d\n",
sc->sc_bbp_id, sc->sc_bbp_rev, sc->sc_bbp_pkg);
DPRINTF(sc, BWI_DBG_ATTACH, "nregwin %d, cap 0x%08x\n",
nregwin, sc->sc_cap);
/*
* Create rest of the regwins
*/
/* Don't re-create common regwin, if it is already created */
i = BWI_REGWIN_EXIST(&sc->sc_com_regwin) ? 1 : 0;
for (; i < nregwin; ++i) {
/*
* Get regwin information
*/
error = bwi_regwin_select(sc, i);
if (error) {
device_printf(sc->sc_dev,
"can't select regwin %d\n", i);
return error;
}
bwi_regwin_info(sc, &rw_type, &rw_rev);
/*
* Try attach:
* 1) Bus (PCI/PCIE) regwin
* 2) MAC regwin
* Ignore rest types of regwin
*/
if (rw_type == BWI_REGWIN_T_BUSPCI ||
rw_type == BWI_REGWIN_T_BUSPCIE) {
if (BWI_REGWIN_EXIST(&sc->sc_bus_regwin)) {
device_printf(sc->sc_dev,
"bus regwin already exists\n");
} else {
BWI_CREATE_REGWIN(&sc->sc_bus_regwin, i,
rw_type, rw_rev);
}
} else if (rw_type == BWI_REGWIN_T_MAC) {
/* XXX ignore return value */
bwi_mac_attach(sc, i, rw_rev);
}
}
/* At least one MAC shold exist */
if (!BWI_REGWIN_EXIST(&sc->sc_mac[0].mac_regwin)) {
device_printf(sc->sc_dev, "no MAC was found\n");
return ENXIO;
}
KASSERT(sc->sc_nmac > 0, ("no mac's"));
/* Bus regwin must exist */
if (!BWI_REGWIN_EXIST(&sc->sc_bus_regwin)) {
device_printf(sc->sc_dev, "no bus regwin was found\n");
return ENXIO;
}
/* Start with first MAC */
error = bwi_regwin_switch(sc, &sc->sc_mac[0].mac_regwin, NULL);
if (error)
return error;
return 0;
#undef N
}
int
bwi_bus_init(struct bwi_softc *sc, struct bwi_mac *mac)
{
struct bwi_regwin *old, *bus;
uint32_t val;
int error;
bus = &sc->sc_bus_regwin;
KASSERT(sc->sc_cur_regwin == &mac->mac_regwin, ("not cur regwin"));
/*
* Tell bus to generate requested interrupts
*/
if (bus->rw_rev < 6 && bus->rw_type == BWI_REGWIN_T_BUSPCI) {
/*
* NOTE: Read BWI_FLAGS from MAC regwin
*/
val = CSR_READ_4(sc, BWI_FLAGS);
error = bwi_regwin_switch(sc, bus, &old);
if (error)
return error;
CSR_SETBITS_4(sc, BWI_INTRVEC, (val & BWI_FLAGS_INTR_MASK));
} else {
uint32_t mac_mask;
mac_mask = 1 << mac->mac_id;
error = bwi_regwin_switch(sc, bus, &old);
if (error)
return error;
val = pci_read_config(sc->sc_dev, BWI_PCIR_INTCTL, 4);
val |= mac_mask << 8;
pci_write_config(sc->sc_dev, BWI_PCIR_INTCTL, val, 4);
}
if (sc->sc_flags & BWI_F_BUS_INITED)
goto back;
if (bus->rw_type == BWI_REGWIN_T_BUSPCI) {
/*
* Enable prefetch and burst
*/
CSR_SETBITS_4(sc, BWI_BUS_CONFIG,
BWI_BUS_CONFIG_PREFETCH | BWI_BUS_CONFIG_BURST);
if (bus->rw_rev < 5) {
struct bwi_regwin *com = &sc->sc_com_regwin;
/*
* Configure timeouts for bus operation
*/
/*
* Set service timeout and request timeout
*/
CSR_SETBITS_4(sc, BWI_CONF_LO,
__SHIFTIN(BWI_CONF_LO_SERVTO, BWI_CONF_LO_SERVTO_MASK) |
__SHIFTIN(BWI_CONF_LO_REQTO, BWI_CONF_LO_REQTO_MASK));
/*
* If there is common regwin, we switch to that regwin
* and switch back to bus regwin once we have done.
*/
if (BWI_REGWIN_EXIST(com)) {
error = bwi_regwin_switch(sc, com, NULL);
if (error)
return error;
}
/* Let bus know what we have changed */
CSR_WRITE_4(sc, BWI_BUS_ADDR, BWI_BUS_ADDR_MAGIC);
CSR_READ_4(sc, BWI_BUS_ADDR); /* Flush */
CSR_WRITE_4(sc, BWI_BUS_DATA, 0);
CSR_READ_4(sc, BWI_BUS_DATA); /* Flush */
if (BWI_REGWIN_EXIST(com)) {
error = bwi_regwin_switch(sc, bus, NULL);
if (error)
return error;
}
} else if (bus->rw_rev >= 11) {
/*
* Enable memory read multiple
*/
CSR_SETBITS_4(sc, BWI_BUS_CONFIG, BWI_BUS_CONFIG_MRM);
}
} else {
/* TODO:PCIE */
}
sc->sc_flags |= BWI_F_BUS_INITED;
back:
return bwi_regwin_switch(sc, old, NULL);
}
static void
bwi_get_card_flags(struct bwi_softc *sc)
{
#define PCI_VENDOR_APPLE 0x106b
#define PCI_VENDOR_DELL 0x1028
sc->sc_card_flags = bwi_read_sprom(sc, BWI_SPROM_CARD_FLAGS);
if (sc->sc_card_flags == 0xffff)
sc->sc_card_flags = 0;
if (sc->sc_pci_subvid == PCI_VENDOR_DELL &&
sc->sc_bbp_id == BWI_BBPID_BCM4301 &&
sc->sc_pci_revid == 0x74)
sc->sc_card_flags |= BWI_CARD_F_BT_COEXIST;
if (sc->sc_pci_subvid == PCI_VENDOR_APPLE &&
sc->sc_pci_subdid == 0x4e && /* XXX */
sc->sc_pci_revid > 0x40)
sc->sc_card_flags |= BWI_CARD_F_PA_GPIO9;
DPRINTF(sc, BWI_DBG_ATTACH, "card flags 0x%04x\n", sc->sc_card_flags);
#undef PCI_VENDOR_DELL
#undef PCI_VENDOR_APPLE
}
static void
bwi_get_eaddr(struct bwi_softc *sc, uint16_t eaddr_ofs, uint8_t *eaddr)
{
int i;
for (i = 0; i < 3; ++i) {
*((uint16_t *)eaddr + i) =
htobe16(bwi_read_sprom(sc, eaddr_ofs + 2 * i));
}
}
static void
bwi_get_clock_freq(struct bwi_softc *sc, struct bwi_clock_freq *freq)
{
struct bwi_regwin *com;
uint32_t val;
u_int div;
int src;
bzero(freq, sizeof(*freq));
com = &sc->sc_com_regwin;
KASSERT(BWI_REGWIN_EXIST(com), ("regwin does not exist"));
KASSERT(sc->sc_cur_regwin == com, ("wrong regwin"));
KASSERT(sc->sc_cap & BWI_CAP_CLKMODE, ("wrong clock mode"));
/*
* Calculate clock frequency
*/
src = -1;
div = 0;
if (com->rw_rev < 6) {
val = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, 4);
if (val & BWI_PCIM_GPIO_OUT_CLKSRC) {
src = BWI_CLKSRC_PCI;
div = 64;
} else {
src = BWI_CLKSRC_CS_OSC;
div = 32;
}
} else if (com->rw_rev < 10) {
val = CSR_READ_4(sc, BWI_CLOCK_CTRL);
src = __SHIFTOUT(val, BWI_CLOCK_CTRL_CLKSRC);
if (src == BWI_CLKSRC_LP_OSC) {
div = 1;
} else {
div = (__SHIFTOUT(val, BWI_CLOCK_CTRL_FDIV) + 1) << 2;
/* Unknown source */
if (src >= BWI_CLKSRC_MAX)
src = BWI_CLKSRC_CS_OSC;
}
} else {
val = CSR_READ_4(sc, BWI_CLOCK_INFO);
src = BWI_CLKSRC_CS_OSC;
div = (__SHIFTOUT(val, BWI_CLOCK_INFO_FDIV) + 1) << 2;
}
KASSERT(src >= 0 && src < BWI_CLKSRC_MAX, ("bad src %d", src));
KASSERT(div != 0, ("div zero"));
DPRINTF(sc, BWI_DBG_ATTACH, "clksrc %s\n",
src == BWI_CLKSRC_PCI ? "PCI" :
(src == BWI_CLKSRC_LP_OSC ? "LP_OSC" : "CS_OSC"));
freq->clkfreq_min = bwi_clkfreq[src].freq_min / div;
freq->clkfreq_max = bwi_clkfreq[src].freq_max / div;
DPRINTF(sc, BWI_DBG_ATTACH, "clkfreq min %u, max %u\n",
freq->clkfreq_min, freq->clkfreq_max);
}
static int
bwi_set_clock_mode(struct bwi_softc *sc, enum bwi_clock_mode clk_mode)
{
struct bwi_regwin *old, *com;
uint32_t clk_ctrl, clk_src;
int error, pwr_off = 0;
com = &sc->sc_com_regwin;
if (!BWI_REGWIN_EXIST(com))
return 0;
if (com->rw_rev >= 10 || com->rw_rev < 6)
return 0;
/*
* For common regwin whose rev is [6, 10), the chip
* must be capable to change clock mode.
*/
if ((sc->sc_cap & BWI_CAP_CLKMODE) == 0)
return 0;
error = bwi_regwin_switch(sc, com, &old);
if (error)
return error;
if (clk_mode == BWI_CLOCK_MODE_FAST)
bwi_power_on(sc, 0); /* Don't turn on PLL */
clk_ctrl = CSR_READ_4(sc, BWI_CLOCK_CTRL);
clk_src = __SHIFTOUT(clk_ctrl, BWI_CLOCK_CTRL_CLKSRC);
switch (clk_mode) {
case BWI_CLOCK_MODE_FAST:
clk_ctrl &= ~BWI_CLOCK_CTRL_SLOW;
clk_ctrl |= BWI_CLOCK_CTRL_IGNPLL;
break;
case BWI_CLOCK_MODE_SLOW:
clk_ctrl |= BWI_CLOCK_CTRL_SLOW;
break;
case BWI_CLOCK_MODE_DYN:
clk_ctrl &= ~(BWI_CLOCK_CTRL_SLOW |
BWI_CLOCK_CTRL_IGNPLL |
BWI_CLOCK_CTRL_NODYN);
if (clk_src != BWI_CLKSRC_CS_OSC) {
clk_ctrl |= BWI_CLOCK_CTRL_NODYN;
pwr_off = 1;
}
break;
}
CSR_WRITE_4(sc, BWI_CLOCK_CTRL, clk_ctrl);
if (pwr_off)
bwi_power_off(sc, 0); /* Leave PLL as it is */
return bwi_regwin_switch(sc, old, NULL);
}
static int
bwi_set_clock_delay(struct bwi_softc *sc)
{
struct bwi_regwin *old, *com;
int error;
com = &sc->sc_com_regwin;
if (!BWI_REGWIN_EXIST(com))
return 0;
error = bwi_regwin_switch(sc, com, &old);
if (error)
return error;
if (sc->sc_bbp_id == BWI_BBPID_BCM4321) {
if (sc->sc_bbp_rev == 0)
CSR_WRITE_4(sc, BWI_CONTROL, BWI_CONTROL_MAGIC0);
else if (sc->sc_bbp_rev == 1)
CSR_WRITE_4(sc, BWI_CONTROL, BWI_CONTROL_MAGIC1);
}
if (sc->sc_cap & BWI_CAP_CLKMODE) {
if (com->rw_rev >= 10) {
CSR_FILT_SETBITS_4(sc, BWI_CLOCK_INFO, 0xffff, 0x40000);
} else {
struct bwi_clock_freq freq;
bwi_get_clock_freq(sc, &freq);
CSR_WRITE_4(sc, BWI_PLL_ON_DELAY,
howmany(freq.clkfreq_max * 150, 1000000));
CSR_WRITE_4(sc, BWI_FREQ_SEL_DELAY,
howmany(freq.clkfreq_max * 15, 1000000));
}
}
return bwi_regwin_switch(sc, old, NULL);
}
static void
bwi_init(void *xsc)
{
struct bwi_softc *sc = xsc;
struct ifnet *ifp = sc->sc_ifp;
struct ieee80211com *ic = ifp->if_l2com;
BWI_LOCK(sc);
bwi_init_statechg(sc, 1);
BWI_UNLOCK(sc);
if (ifp->if_drv_flags & IFF_DRV_RUNNING)
ieee80211_start_all(ic); /* start all vap's */
}
static void
bwi_init_statechg(struct bwi_softc *sc, int statechg)
{
struct ifnet *ifp = sc->sc_ifp;
struct bwi_mac *mac;
int error;
bwi_stop_locked(sc, statechg);
bwi_bbp_power_on(sc, BWI_CLOCK_MODE_FAST);
/* TODO: 2 MAC */
mac = &sc->sc_mac[0];
error = bwi_regwin_switch(sc, &mac->mac_regwin, NULL);
if (error) {
if_printf(ifp, "%s: error %d on regwin switch\n",
__func__, error);
goto bad;
}
error = bwi_mac_init(mac);
if (error) {
if_printf(ifp, "%s: error %d on MAC init\n", __func__, error);
goto bad;
}
bwi_bbp_power_on(sc, BWI_CLOCK_MODE_DYN);
bwi_set_bssid(sc, bwi_zero_addr); /* Clear BSSID */
bwi_set_addr_filter(sc, BWI_ADDR_FILTER_MYADDR, IF_LLADDR(ifp));
bwi_mac_reset_hwkeys(mac);
if ((mac->mac_flags & BWI_MAC_F_HAS_TXSTATS) == 0) {
int i;
#define NRETRY 1000
/*
* Drain any possible pending TX status
*/
for (i = 0; i < NRETRY; ++i) {
if ((CSR_READ_4(sc, BWI_TXSTATUS0) &
BWI_TXSTATUS0_VALID) == 0)
break;
CSR_READ_4(sc, BWI_TXSTATUS1);
}
if (i == NRETRY)
if_printf(ifp, "%s: can't drain TX status\n", __func__);
#undef NRETRY
}
if (mac->mac_phy.phy_mode == IEEE80211_MODE_11G)
bwi_mac_updateslot(mac, 1);
/* Start MAC */
error = bwi_mac_start(mac);
if (error) {
if_printf(ifp, "%s: error %d starting MAC\n", __func__, error);
goto bad;
}
/* Clear stop flag before enabling interrupt */
sc->sc_flags &= ~BWI_F_STOP;
ifp->if_drv_flags |= IFF_DRV_RUNNING;
callout_reset(&sc->sc_watchdog_timer, hz, bwi_watchdog, sc);
/* Enable intrs */
bwi_enable_intrs(sc, BWI_INIT_INTRS);
return;
bad:
bwi_stop_locked(sc, 1);
}
static int
bwi_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
{
#define IS_RUNNING(ifp) \
((ifp->if_flags & IFF_UP) && (ifp->if_drv_flags & IFF_DRV_RUNNING))
struct bwi_softc *sc = ifp->if_softc;
struct ieee80211com *ic = ifp->if_l2com;
struct ifreq *ifr = (struct ifreq *) data;
int error = 0, startall = 0;
switch (cmd) {
case SIOCSIFFLAGS:
BWI_LOCK(sc);
if (IS_RUNNING(ifp)) {
struct bwi_mac *mac;
int promisc = -1;
KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
("current regwin type %d",
sc->sc_cur_regwin->rw_type));
mac = (struct bwi_mac *)sc->sc_cur_regwin;
if ((ifp->if_flags & IFF_PROMISC) &&
(sc->sc_flags & BWI_F_PROMISC) == 0) {
promisc = 1;
sc->sc_flags |= BWI_F_PROMISC;
} else if ((ifp->if_flags & IFF_PROMISC) == 0 &&
(sc->sc_flags & BWI_F_PROMISC)) {
promisc = 0;
sc->sc_flags &= ~BWI_F_PROMISC;
}
if (promisc >= 0)
bwi_mac_set_promisc(mac, promisc);
}
if (ifp->if_flags & IFF_UP) {
if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) {
bwi_init_statechg(sc, 1);
startall = 1;
}
} else {
if (ifp->if_drv_flags & IFF_DRV_RUNNING)
bwi_stop_locked(sc, 1);
}
BWI_UNLOCK(sc);
if (startall)
ieee80211_start_all(ic);
break;
case SIOCGIFMEDIA:
error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd);
break;
case SIOCGIFADDR:
error = ether_ioctl(ifp, cmd, data);
break;
default:
error = EINVAL;
break;
}
return error;
#undef IS_RUNNING
}
static void
bwi_start(struct ifnet *ifp)
{
struct bwi_softc *sc = ifp->if_softc;
BWI_LOCK(sc);
bwi_start_locked(ifp);
BWI_UNLOCK(sc);
}
static void
bwi_start_locked(struct ifnet *ifp)
{
struct bwi_softc *sc = ifp->if_softc;
struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[BWI_TX_DATA_RING];
struct ieee80211_frame *wh;
struct ieee80211_node *ni;
struct ieee80211_key *k;
struct mbuf *m;
int trans, idx;
if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
return;
trans = 0;
idx = tbd->tbd_idx;
while (tbd->tbd_buf[idx].tb_mbuf == NULL) {
IFQ_DRV_DEQUEUE(&ifp->if_snd, m); /* XXX: LOCK */
if (m == NULL)
break;
ni = (struct ieee80211_node *) m->m_pkthdr.rcvif;
wh = mtod(m, struct ieee80211_frame *);
if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
k = ieee80211_crypto_encap(ni, m);
if (k == NULL) {
ieee80211_free_node(ni);
m_freem(m);
ifp->if_oerrors++;
continue;
}
}
wh = NULL; /* Catch any invalid use */
if (bwi_encap(sc, idx, m, ni) != 0) {
/* 'm' is freed in bwi_encap() if we reach here */
if (ni != NULL)
ieee80211_free_node(ni);
ifp->if_oerrors++;
continue;
}
trans = 1;
tbd->tbd_used++;
idx = (idx + 1) % BWI_TX_NDESC;
ifp->if_opackets++;
if (tbd->tbd_used + BWI_TX_NSPRDESC >= BWI_TX_NDESC) {
ifp->if_drv_flags |= IFF_DRV_OACTIVE;
break;
}
}
tbd->tbd_idx = idx;
if (trans)
sc->sc_tx_timer = 5;
}
static int
bwi_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
const struct ieee80211_bpf_params *params)
{
struct ieee80211com *ic = ni->ni_ic;
struct ifnet *ifp = ic->ic_ifp;
struct bwi_softc *sc = ifp->if_softc;
/* XXX wme? */
struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[BWI_TX_DATA_RING];
int idx, error;
if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) {
ieee80211_free_node(ni);
m_freem(m);
return ENETDOWN;
}
BWI_LOCK(sc);
idx = tbd->tbd_idx;
KASSERT(tbd->tbd_buf[idx].tb_mbuf == NULL, ("slot %d not empty", idx));
if (params == NULL) {
/*
* Legacy path; interpret frame contents to decide
* precisely how to send the frame.
*/
error = bwi_encap(sc, idx, m, ni);
} else {
/*
* Caller supplied explicit parameters to use in
* sending the frame.
*/
error = bwi_encap_raw(sc, idx, m, ni, params);
}
if (error == 0) {
ifp->if_opackets++;
if (++tbd->tbd_used + BWI_TX_NSPRDESC >= BWI_TX_NDESC)
ifp->if_drv_flags |= IFF_DRV_OACTIVE;
tbd->tbd_idx = (idx + 1) % BWI_TX_NDESC;
sc->sc_tx_timer = 5;
} else {
/* NB: m is reclaimed on encap failure */
ieee80211_free_node(ni);
ifp->if_oerrors++;
}
BWI_UNLOCK(sc);
return error;
}
static void
bwi_watchdog(void *arg)
{
struct bwi_softc *sc;
struct ifnet *ifp;
sc = arg;
ifp = sc->sc_ifp;
BWI_ASSERT_LOCKED(sc);
if (sc->sc_tx_timer != 0 && --sc->sc_tx_timer == 0) {
if_printf(ifp, "watchdog timeout\n");
ifp->if_oerrors++;
taskqueue_enqueue(sc->sc_tq, &sc->sc_restart_task);
}
callout_reset(&sc->sc_watchdog_timer, hz, bwi_watchdog, sc);
}
static void
bwi_stop(struct bwi_softc *sc, int statechg)
{
BWI_LOCK(sc);
bwi_stop_locked(sc, statechg);
BWI_UNLOCK(sc);
}
static void
bwi_stop_locked(struct bwi_softc *sc, int statechg)
{
struct ifnet *ifp = sc->sc_ifp;
struct bwi_mac *mac;
int i, error, pwr_off = 0;
BWI_ASSERT_LOCKED(sc);
callout_stop(&sc->sc_calib_ch);
callout_stop(&sc->sc_led_blink_ch);
sc->sc_led_blinking = 0;
sc->sc_flags |= BWI_F_STOP;
if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
("current regwin type %d", sc->sc_cur_regwin->rw_type));
mac = (struct bwi_mac *)sc->sc_cur_regwin;
bwi_disable_intrs(sc, BWI_ALL_INTRS);
CSR_READ_4(sc, BWI_MAC_INTR_MASK);
bwi_mac_stop(mac);
}
for (i = 0; i < sc->sc_nmac; ++i) {
struct bwi_regwin *old_rw;
mac = &sc->sc_mac[i];
if ((mac->mac_flags & BWI_MAC_F_INITED) == 0)
continue;
error = bwi_regwin_switch(sc, &mac->mac_regwin, &old_rw);
if (error)
continue;
bwi_mac_shutdown(mac);
pwr_off = 1;
bwi_regwin_switch(sc, old_rw, NULL);
}
if (pwr_off)
bwi_bbp_power_off(sc);
sc->sc_tx_timer = 0;
callout_stop(&sc->sc_watchdog_timer);
ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
}
void
bwi_intr(void *xsc)
{
struct bwi_softc *sc = xsc;
struct ifnet *ifp = sc->sc_ifp;
struct bwi_mac *mac;
uint32_t intr_status;
uint32_t txrx_intr_status[BWI_TXRX_NRING];
int i, txrx_error, tx = 0, rx_data = -1;
BWI_LOCK(sc);
if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0 ||
(sc->sc_flags & BWI_F_STOP)) {
BWI_UNLOCK(sc);
return;
}
/*
* Get interrupt status
*/
intr_status = CSR_READ_4(sc, BWI_MAC_INTR_STATUS);
if (intr_status == 0xffffffff) { /* Not for us */
BWI_UNLOCK(sc);
return;
}
DPRINTF(sc, BWI_DBG_INTR, "intr status 0x%08x\n", intr_status);
intr_status &= CSR_READ_4(sc, BWI_MAC_INTR_MASK);
if (intr_status == 0) { /* Nothing is interesting */
BWI_UNLOCK(sc);
return;
}
KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
("current regwin type %d", sc->sc_cur_regwin->rw_type));
mac = (struct bwi_mac *)sc->sc_cur_regwin;
txrx_error = 0;
DPRINTF(sc, BWI_DBG_INTR, "%s\n", "TX/RX intr");
for (i = 0; i < BWI_TXRX_NRING; ++i) {
uint32_t mask;
if (BWI_TXRX_IS_RX(i))
mask = BWI_TXRX_RX_INTRS;
else
mask = BWI_TXRX_TX_INTRS;
txrx_intr_status[i] =
CSR_READ_4(sc, BWI_TXRX_INTR_STATUS(i)) & mask;
_DPRINTF(sc, BWI_DBG_INTR, ", %d 0x%08x",
i, txrx_intr_status[i]);
if (txrx_intr_status[i] & BWI_TXRX_INTR_ERROR) {
if_printf(ifp,
"%s: intr fatal TX/RX (%d) error 0x%08x\n",
__func__, i, txrx_intr_status[i]);
txrx_error = 1;
}
}
_DPRINTF(sc, BWI_DBG_INTR, "%s\n", "");
/*
* Acknowledge interrupt
*/
CSR_WRITE_4(sc, BWI_MAC_INTR_STATUS, intr_status);
for (i = 0; i < BWI_TXRX_NRING; ++i)
CSR_WRITE_4(sc, BWI_TXRX_INTR_STATUS(i), txrx_intr_status[i]);
/* Disable all interrupts */
bwi_disable_intrs(sc, BWI_ALL_INTRS);
/*
* http://bcm-specs.sipsolutions.net/Interrupts
* Says for this bit (0x800):
* "Fatal Error
*
* We got this one while testing things when by accident the
* template ram wasn't set to big endian when it should have
* been after writing the initial values. It keeps on being
* triggered, the only way to stop it seems to shut down the
* chip."
*
* Suggesting that we should never get it and if we do we're not
* feeding TX packets into the MAC correctly if we do... Apparently,
* it is valid only on mac version 5 and higher, but I couldn't
* find a reference for that... Since I see them from time to time
* on my card, this suggests an error in the tx path still...
*/
if (intr_status & BWI_INTR_PHY_TXERR) {
if (mac->mac_flags & BWI_MAC_F_PHYE_RESET) {
if_printf(ifp, "%s: intr PHY TX error\n", __func__);
taskqueue_enqueue(sc->sc_tq, &sc->sc_restart_task);
BWI_UNLOCK(sc);
return;
}
}
if (txrx_error) {
/* TODO: reset device */
}
if (intr_status & BWI_INTR_TBTT)
bwi_mac_config_ps(mac);
if (intr_status & BWI_INTR_EO_ATIM)
if_printf(ifp, "EO_ATIM\n");
if (intr_status & BWI_INTR_PMQ) {
for (;;) {
if ((CSR_READ_4(sc, BWI_MAC_PS_STATUS) & 0x8) == 0)
break;
}
CSR_WRITE_2(sc, BWI_MAC_PS_STATUS, 0x2);
}
if (intr_status & BWI_INTR_NOISE)
if_printf(ifp, "intr noise\n");
if (txrx_intr_status[0] & BWI_TXRX_INTR_RX) {
rx_data = sc->sc_rxeof(sc);
if (sc->sc_flags & BWI_F_STOP) {
BWI_UNLOCK(sc);
return;
}
}
if (txrx_intr_status[3] & BWI_TXRX_INTR_RX) {
sc->sc_txeof_status(sc);
tx = 1;
}
if (intr_status & BWI_INTR_TX_DONE) {
bwi_txeof(sc);
tx = 1;
}
/* Re-enable interrupts */
bwi_enable_intrs(sc, BWI_INIT_INTRS);
if (sc->sc_blink_led != NULL && sc->sc_led_blink) {
int evt = BWI_LED_EVENT_NONE;
if (tx && rx_data > 0) {
if (sc->sc_rx_rate > sc->sc_tx_rate)
evt = BWI_LED_EVENT_RX;
else
evt = BWI_LED_EVENT_TX;
} else if (tx) {
evt = BWI_LED_EVENT_TX;
} else if (rx_data > 0) {
evt = BWI_LED_EVENT_RX;
} else if (rx_data == 0) {
evt = BWI_LED_EVENT_POLL;
}
if (evt != BWI_LED_EVENT_NONE)
bwi_led_event(sc, evt);
}
BWI_UNLOCK(sc);
}
static void
bwi_scan_start(struct ieee80211com *ic)
{
struct bwi_softc *sc = ic->ic_ifp->if_softc;
BWI_LOCK(sc);
/* Enable MAC beacon promiscuity */
CSR_SETBITS_4(sc, BWI_MAC_STATUS, BWI_MAC_STATUS_PASS_BCN);
BWI_UNLOCK(sc);
}
static void
bwi_set_channel(struct ieee80211com *ic)
{
struct bwi_softc *sc = ic->ic_ifp->if_softc;
struct ieee80211_channel *c = ic->ic_curchan;
struct bwi_mac *mac;
BWI_LOCK(sc);
KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
("current regwin type %d", sc->sc_cur_regwin->rw_type));
mac = (struct bwi_mac *)sc->sc_cur_regwin;
bwi_rf_set_chan(mac, ieee80211_chan2ieee(ic, c), 0);
sc->sc_rates = ieee80211_get_ratetable(c);
/*
* Setup radio tap channel freq and flags
*/
sc->sc_tx_th.wt_chan_freq = sc->sc_rx_th.wr_chan_freq =
htole16(c->ic_freq);
sc->sc_tx_th.wt_chan_flags = sc->sc_rx_th.wr_chan_flags =
htole16(c->ic_flags & 0xffff);
BWI_UNLOCK(sc);
}
static void
bwi_scan_end(struct ieee80211com *ic)
{
struct bwi_softc *sc = ic->ic_ifp->if_softc;
BWI_LOCK(sc);
CSR_CLRBITS_4(sc, BWI_MAC_STATUS, BWI_MAC_STATUS_PASS_BCN);
BWI_UNLOCK(sc);
}
static int
bwi_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
{
struct bwi_vap *bvp = BWI_VAP(vap);
const struct ieee80211_txparam *tp;
struct ieee80211com *ic= vap->iv_ic;
struct ifnet *ifp = ic->ic_ifp;
enum ieee80211_state ostate = vap->iv_state;
struct bwi_softc *sc = ifp->if_softc;
struct bwi_mac *mac;
int error;
BWI_LOCK(sc);
callout_stop(&sc->sc_calib_ch);
if (nstate == IEEE80211_S_INIT)
sc->sc_txpwrcb_type = BWI_TXPWR_INIT;
bwi_led_newstate(sc, nstate);
error = bvp->bv_newstate(vap, nstate, arg);
if (error != 0)
goto back;
/*
* Clear the BSSID when we stop a STA
*/
if (vap->iv_opmode == IEEE80211_M_STA) {
if (ostate == IEEE80211_S_RUN && nstate != IEEE80211_S_RUN) {
/*
* Clear out the BSSID. If we reassociate to
* the same AP, this will reinialize things
* correctly...
*/
if (ic->ic_opmode == IEEE80211_M_STA &&
!(sc->sc_flags & BWI_F_STOP))
bwi_set_bssid(sc, bwi_zero_addr);
}
}
if (vap->iv_opmode == IEEE80211_M_MONITOR) {
/* Nothing to do */
} else if (nstate == IEEE80211_S_RUN) {
bwi_set_bssid(sc, vap->iv_bss->ni_bssid);
KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
("current regwin type %d", sc->sc_cur_regwin->rw_type));
mac = (struct bwi_mac *)sc->sc_cur_regwin;
/* Initial TX power calibration */
bwi_mac_calibrate_txpower(mac, BWI_TXPWR_INIT);
#ifdef notyet
sc->sc_txpwrcb_type = BWI_TXPWR_FORCE;
#else
sc->sc_txpwrcb_type = BWI_TXPWR_CALIB;
#endif
/* Initializes ratectl for a node. */
tp = &vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)];
if (tp->ucastrate == IEEE80211_FIXED_RATE_NONE)
ieee80211_ratectl_node_init(vap->iv_bss);
callout_reset(&sc->sc_calib_ch, hz, bwi_calibrate, sc);
}
back:
BWI_UNLOCK(sc);
return error;
}
static int
bwi_media_change(struct ifnet *ifp)
{
int error = ieee80211_media_change(ifp);
/* NB: only the fixed rate can change and that doesn't need a reset */
return (error == ENETRESET ? 0 : error);
}
static int
bwi_dma_alloc(struct bwi_softc *sc)
{
int error, i, has_txstats;
bus_addr_t lowaddr = 0;
bus_size_t tx_ring_sz, rx_ring_sz, desc_sz = 0;
uint32_t txrx_ctrl_step = 0;
has_txstats = 0;
for (i = 0; i < sc->sc_nmac; ++i) {
if (sc->sc_mac[i].mac_flags & BWI_MAC_F_HAS_TXSTATS) {
has_txstats = 1;
break;
}
}
switch (sc->sc_bus_space) {
case BWI_BUS_SPACE_30BIT:
case BWI_BUS_SPACE_32BIT:
if (sc->sc_bus_space == BWI_BUS_SPACE_30BIT)
lowaddr = BWI_BUS_SPACE_MAXADDR;
else
lowaddr = BUS_SPACE_MAXADDR_32BIT;
desc_sz = sizeof(struct bwi_desc32);
txrx_ctrl_step = 0x20;
sc->sc_init_tx_ring = bwi_init_tx_ring32;
sc->sc_free_tx_ring = bwi_free_tx_ring32;
sc->sc_init_rx_ring = bwi_init_rx_ring32;
sc->sc_free_rx_ring = bwi_free_rx_ring32;
sc->sc_setup_rxdesc = bwi_setup_rx_desc32;
sc->sc_setup_txdesc = bwi_setup_tx_desc32;
sc->sc_rxeof = bwi_rxeof32;
sc->sc_start_tx = bwi_start_tx32;
if (has_txstats) {
sc->sc_init_txstats = bwi_init_txstats32;
sc->sc_free_txstats = bwi_free_txstats32;
sc->sc_txeof_status = bwi_txeof_status32;
}
break;
case BWI_BUS_SPACE_64BIT:
lowaddr = BUS_SPACE_MAXADDR; /* XXX */
desc_sz = sizeof(struct bwi_desc64);
txrx_ctrl_step = 0x40;
sc->sc_init_tx_ring = bwi_init_tx_ring64;
sc->sc_free_tx_ring = bwi_free_tx_ring64;
sc->sc_init_rx_ring = bwi_init_rx_ring64;
sc->sc_free_rx_ring = bwi_free_rx_ring64;
sc->sc_setup_rxdesc = bwi_setup_rx_desc64;
sc->sc_setup_txdesc = bwi_setup_tx_desc64;
sc->sc_rxeof = bwi_rxeof64;
sc->sc_start_tx = bwi_start_tx64;
if (has_txstats) {
sc->sc_init_txstats = bwi_init_txstats64;
sc->sc_free_txstats = bwi_free_txstats64;
sc->sc_txeof_status = bwi_txeof_status64;
}
break;
}
KASSERT(lowaddr != 0, ("lowaddr zero"));
KASSERT(desc_sz != 0, ("desc_sz zero"));
KASSERT(txrx_ctrl_step != 0, ("txrx_ctrl_step zero"));
tx_ring_sz = roundup(desc_sz * BWI_TX_NDESC, BWI_RING_ALIGN);
rx_ring_sz = roundup(desc_sz * BWI_RX_NDESC, BWI_RING_ALIGN);
/*
* Create top level DMA tag
*/
error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), /* parent */
BWI_ALIGN, 0, /* alignment, bounds */
lowaddr, /* lowaddr */
BUS_SPACE_MAXADDR, /* highaddr */
NULL, NULL, /* filter, filterarg */
MAXBSIZE, /* maxsize */
BUS_SPACE_UNRESTRICTED, /* nsegments */
BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
BUS_DMA_ALLOCNOW, /* flags */
NULL, NULL, /* lockfunc, lockarg */
&sc->sc_parent_dtag);
if (error) {
device_printf(sc->sc_dev, "can't create parent DMA tag\n");
return error;
}
#define TXRX_CTRL(idx) (BWI_TXRX_CTRL_BASE + (idx) * txrx_ctrl_step)
/*
* Create TX ring DMA stuffs
*/
error = bus_dma_tag_create(sc->sc_parent_dtag,
BWI_RING_ALIGN, 0,
BUS_SPACE_MAXADDR,
BUS_SPACE_MAXADDR,
NULL, NULL,
tx_ring_sz,
1,
BUS_SPACE_MAXSIZE_32BIT,
BUS_DMA_ALLOCNOW,
NULL, NULL,
&sc->sc_txring_dtag);
if (error) {
device_printf(sc->sc_dev, "can't create TX ring DMA tag\n");
return error;
}
for (i = 0; i < BWI_TX_NRING; ++i) {
error = bwi_dma_ring_alloc(sc, sc->sc_txring_dtag,
&sc->sc_tx_rdata[i], tx_ring_sz,
TXRX_CTRL(i));
if (error) {
device_printf(sc->sc_dev, "%dth TX ring "
"DMA alloc failed\n", i);
return error;
}
}
/*
* Create RX ring DMA stuffs
*/
error = bus_dma_tag_create(sc->sc_parent_dtag,
BWI_RING_ALIGN, 0,
BUS_SPACE_MAXADDR,
BUS_SPACE_MAXADDR,
NULL, NULL,
rx_ring_sz,
1,
BUS_SPACE_MAXSIZE_32BIT,
BUS_DMA_ALLOCNOW,
NULL, NULL,
&sc->sc_rxring_dtag);
if (error) {
device_printf(sc->sc_dev, "can't create RX ring DMA tag\n");
return error;
}
error = bwi_dma_ring_alloc(sc, sc->sc_rxring_dtag, &sc->sc_rx_rdata,
rx_ring_sz, TXRX_CTRL(0));
if (error) {
device_printf(sc->sc_dev, "RX ring DMA alloc failed\n");
return error;
}
if (has_txstats) {
error = bwi_dma_txstats_alloc(sc, TXRX_CTRL(3), desc_sz);
if (error) {
device_printf(sc->sc_dev,
"TX stats DMA alloc failed\n");
return error;
}
}
#undef TXRX_CTRL
return bwi_dma_mbuf_create(sc);
}
static void
bwi_dma_free(struct bwi_softc *sc)
{
if (sc->sc_txring_dtag != NULL) {
int i;
for (i = 0; i < BWI_TX_NRING; ++i) {
struct bwi_ring_data *rd = &sc->sc_tx_rdata[i];
if (rd->rdata_desc != NULL) {
bus_dmamap_unload(sc->sc_txring_dtag,
rd->rdata_dmap);
bus_dmamem_free(sc->sc_txring_dtag,
rd->rdata_desc,
rd->rdata_dmap);
}
}
bus_dma_tag_destroy(sc->sc_txring_dtag);
}
if (sc->sc_rxring_dtag != NULL) {
struct bwi_ring_data *rd = &sc->sc_rx_rdata;
if (rd->rdata_desc != NULL) {
bus_dmamap_unload(sc->sc_rxring_dtag, rd->rdata_dmap);
bus_dmamem_free(sc->sc_rxring_dtag, rd->rdata_desc,
rd->rdata_dmap);
}
bus_dma_tag_destroy(sc->sc_rxring_dtag);
}
bwi_dma_txstats_free(sc);
bwi_dma_mbuf_destroy(sc, BWI_TX_NRING, 1);
if (sc->sc_parent_dtag != NULL)
bus_dma_tag_destroy(sc->sc_parent_dtag);
}
static int
bwi_dma_ring_alloc(struct bwi_softc *sc, bus_dma_tag_t dtag,
struct bwi_ring_data *rd, bus_size_t size,
uint32_t txrx_ctrl)
{
int error;
error = bus_dmamem_alloc(dtag, &rd->rdata_desc,
BUS_DMA_WAITOK | BUS_DMA_ZERO,
&rd->rdata_dmap);
if (error) {
device_printf(sc->sc_dev, "can't allocate DMA mem\n");
return error;
}
error = bus_dmamap_load(dtag, rd->rdata_dmap, rd->rdata_desc, size,
bwi_dma_ring_addr, &rd->rdata_paddr,
BUS_DMA_NOWAIT);
if (error) {
device_printf(sc->sc_dev, "can't load DMA mem\n");
bus_dmamem_free(dtag, rd->rdata_desc, rd->rdata_dmap);
rd->rdata_desc = NULL;
return error;
}
rd->rdata_txrx_ctrl = txrx_ctrl;
return 0;
}
static int
bwi_dma_txstats_alloc(struct bwi_softc *sc, uint32_t ctrl_base,
bus_size_t desc_sz)
{
struct bwi_txstats_data *st;
bus_size_t dma_size;
int error;
st = malloc(sizeof(*st), M_DEVBUF, M_NOWAIT | M_ZERO);
if (st == NULL) {
device_printf(sc->sc_dev, "can't allocate txstats data\n");
return ENOMEM;
}
sc->sc_txstats = st;
/*
* Create TX stats descriptor DMA stuffs
*/
dma_size = roundup(desc_sz * BWI_TXSTATS_NDESC, BWI_RING_ALIGN);
error = bus_dma_tag_create(sc->sc_parent_dtag,
BWI_RING_ALIGN,
0,
BUS_SPACE_MAXADDR,
BUS_SPACE_MAXADDR,
NULL, NULL,
dma_size,
1,
BUS_SPACE_MAXSIZE_32BIT,
BUS_DMA_ALLOCNOW,
NULL, NULL,
&st->stats_ring_dtag);
if (error) {
device_printf(sc->sc_dev, "can't create txstats ring "
"DMA tag\n");
return error;
}
error = bus_dmamem_alloc(st->stats_ring_dtag, &st->stats_ring,
BUS_DMA_WAITOK | BUS_DMA_ZERO,
&st->stats_ring_dmap);
if (error) {
device_printf(sc->sc_dev, "can't allocate txstats ring "
"DMA mem\n");
bus_dma_tag_destroy(st->stats_ring_dtag);
st->stats_ring_dtag = NULL;
return error;
}
error = bus_dmamap_load(st->stats_ring_dtag, st->stats_ring_dmap,
st->stats_ring, dma_size,
bwi_dma_ring_addr, &st->stats_ring_paddr,
BUS_DMA_NOWAIT);
if (error) {
device_printf(sc->sc_dev, "can't load txstats ring DMA mem\n");
bus_dmamem_free(st->stats_ring_dtag, st->stats_ring,
st->stats_ring_dmap);
bus_dma_tag_destroy(st->stats_ring_dtag);
st->stats_ring_dtag = NULL;
return error;
}
/*
* Create TX stats DMA stuffs
*/
dma_size = roundup(sizeof(struct bwi_txstats) * BWI_TXSTATS_NDESC,
BWI_ALIGN);
error = bus_dma_tag_create(sc->sc_parent_dtag,
BWI_ALIGN,
0,
BUS_SPACE_MAXADDR,
BUS_SPACE_MAXADDR,
NULL, NULL,
dma_size,
1,
BUS_SPACE_MAXSIZE_32BIT,
BUS_DMA_ALLOCNOW,
NULL, NULL,
&st->stats_dtag);
if (error) {
device_printf(sc->sc_dev, "can't create txstats DMA tag\n");
return error;
}
error = bus_dmamem_alloc(st->stats_dtag, (void **)&st->stats,
BUS_DMA_WAITOK | BUS_DMA_ZERO,
&st->stats_dmap);
if (error) {
device_printf(sc->sc_dev, "can't allocate txstats DMA mem\n");
bus_dma_tag_destroy(st->stats_dtag);
st->stats_dtag = NULL;
return error;
}
error = bus_dmamap_load(st->stats_dtag, st->stats_dmap, st->stats,
dma_size, bwi_dma_ring_addr, &st->stats_paddr,
BUS_DMA_NOWAIT);
if (error) {
device_printf(sc->sc_dev, "can't load txstats DMA mem\n");
bus_dmamem_free(st->stats_dtag, st->stats, st->stats_dmap);
bus_dma_tag_destroy(st->stats_dtag);
st->stats_dtag = NULL;
return error;
}
st->stats_ctrl_base = ctrl_base;
return 0;
}
static void
bwi_dma_txstats_free(struct bwi_softc *sc)
{
struct bwi_txstats_data *st;
if (sc->sc_txstats == NULL)
return;
st = sc->sc_txstats;
if (st->stats_ring_dtag != NULL) {
bus_dmamap_unload(st->stats_ring_dtag, st->stats_ring_dmap);
bus_dmamem_free(st->stats_ring_dtag, st->stats_ring,
st->stats_ring_dmap);
bus_dma_tag_destroy(st->stats_ring_dtag);
}
if (st->stats_dtag != NULL) {
bus_dmamap_unload(st->stats_dtag, st->stats_dmap);
bus_dmamem_free(st->stats_dtag, st->stats, st->stats_dmap);
bus_dma_tag_destroy(st->stats_dtag);
}
free(st, M_DEVBUF);
}
static void
bwi_dma_ring_addr(void *arg, bus_dma_segment_t *seg, int nseg, int error)
{
KASSERT(nseg == 1, ("too many segments\n"));
*((bus_addr_t *)arg) = seg->ds_addr;
}
static int
bwi_dma_mbuf_create(struct bwi_softc *sc)
{
struct bwi_rxbuf_data *rbd = &sc->sc_rx_bdata;
int i, j, k, ntx, error;
/*
* Create TX/RX mbuf DMA tag
*/
error = bus_dma_tag_create(sc->sc_parent_dtag,
1,
0,
BUS_SPACE_MAXADDR,
BUS_SPACE_MAXADDR,
NULL, NULL,
MCLBYTES,
1,
BUS_SPACE_MAXSIZE_32BIT,
BUS_DMA_ALLOCNOW,
NULL, NULL,
&sc->sc_buf_dtag);
if (error) {
device_printf(sc->sc_dev, "can't create mbuf DMA tag\n");
return error;
}
ntx = 0;
/*
* Create TX mbuf DMA map
*/
for (i = 0; i < BWI_TX_NRING; ++i) {
struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[i];
for (j = 0; j < BWI_TX_NDESC; ++j) {
error = bus_dmamap_create(sc->sc_buf_dtag, 0,
&tbd->tbd_buf[j].tb_dmap);
if (error) {
device_printf(sc->sc_dev, "can't create "
"%dth tbd, %dth DMA map\n", i, j);
ntx = i;
for (k = 0; k < j; ++k) {
bus_dmamap_destroy(sc->sc_buf_dtag,
tbd->tbd_buf[k].tb_dmap);
}
goto fail;
}
}
}
ntx = BWI_TX_NRING;
/*
* Create RX mbuf DMA map and a spare DMA map
*/
error = bus_dmamap_create(sc->sc_buf_dtag, 0,
&rbd->rbd_tmp_dmap);
if (error) {
device_printf(sc->sc_dev,
"can't create spare RX buf DMA map\n");
goto fail;
}
for (j = 0; j < BWI_RX_NDESC; ++j) {
error = bus_dmamap_create(sc->sc_buf_dtag, 0,
&rbd->rbd_buf[j].rb_dmap);
if (error) {
device_printf(sc->sc_dev, "can't create %dth "
"RX buf DMA map\n", j);
for (k = 0; k < j; ++k) {
bus_dmamap_destroy(sc->sc_buf_dtag,
rbd->rbd_buf[j].rb_dmap);
}
bus_dmamap_destroy(sc->sc_buf_dtag,
rbd->rbd_tmp_dmap);
goto fail;
}
}
return 0;
fail:
bwi_dma_mbuf_destroy(sc, ntx, 0);
return error;
}
static void
bwi_dma_mbuf_destroy(struct bwi_softc *sc, int ntx, int nrx)
{
int i, j;
if (sc->sc_buf_dtag == NULL)
return;
for (i = 0; i < ntx; ++i) {
struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[i];
for (j = 0; j < BWI_TX_NDESC; ++j) {
struct bwi_txbuf *tb = &tbd->tbd_buf[j];
if (tb->tb_mbuf != NULL) {
bus_dmamap_unload(sc->sc_buf_dtag,
tb->tb_dmap);
m_freem(tb->tb_mbuf);
}
if (tb->tb_ni != NULL)
ieee80211_free_node(tb->tb_ni);
bus_dmamap_destroy(sc->sc_buf_dtag, tb->tb_dmap);
}
}
if (nrx) {
struct bwi_rxbuf_data *rbd = &sc->sc_rx_bdata;
bus_dmamap_destroy(sc->sc_buf_dtag, rbd->rbd_tmp_dmap);
for (j = 0; j < BWI_RX_NDESC; ++j) {
struct bwi_rxbuf *rb = &rbd->rbd_buf[j];
if (rb->rb_mbuf != NULL) {
bus_dmamap_unload(sc->sc_buf_dtag,
rb->rb_dmap);
m_freem(rb->rb_mbuf);
}
bus_dmamap_destroy(sc->sc_buf_dtag, rb->rb_dmap);
}
}
bus_dma_tag_destroy(sc->sc_buf_dtag);
sc->sc_buf_dtag = NULL;
}
static void
bwi_enable_intrs(struct bwi_softc *sc, uint32_t enable_intrs)
{
CSR_SETBITS_4(sc, BWI_MAC_INTR_MASK, enable_intrs);
}
static void
bwi_disable_intrs(struct bwi_softc *sc, uint32_t disable_intrs)
{
CSR_CLRBITS_4(sc, BWI_MAC_INTR_MASK, disable_intrs);
}
static int
bwi_init_tx_ring32(struct bwi_softc *sc, int ring_idx)
{
struct bwi_ring_data *rd;
struct bwi_txbuf_data *tbd;
uint32_t val, addr_hi, addr_lo;
KASSERT(ring_idx < BWI_TX_NRING, ("ring_idx %d", ring_idx));
rd = &sc->sc_tx_rdata[ring_idx];
tbd = &sc->sc_tx_bdata[ring_idx];
tbd->tbd_idx = 0;
tbd->tbd_used = 0;
bzero(rd->rdata_desc, sizeof(struct bwi_desc32) * BWI_TX_NDESC);
bus_dmamap_sync(sc->sc_txring_dtag, rd->rdata_dmap,
BUS_DMASYNC_PREWRITE);
addr_lo = __SHIFTOUT(rd->rdata_paddr, BWI_TXRX32_RINGINFO_ADDR_MASK);
addr_hi = __SHIFTOUT(rd->rdata_paddr, BWI_TXRX32_RINGINFO_FUNC_MASK);
val = __SHIFTIN(addr_lo, BWI_TXRX32_RINGINFO_ADDR_MASK) |
__SHIFTIN(BWI_TXRX32_RINGINFO_FUNC_TXRX,
BWI_TXRX32_RINGINFO_FUNC_MASK);
CSR_WRITE_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_RINGINFO, val);
val = __SHIFTIN(addr_hi, BWI_TXRX32_CTRL_ADDRHI_MASK) |
BWI_TXRX32_CTRL_ENABLE;
CSR_WRITE_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_CTRL, val);
return 0;
}
static void
bwi_init_rxdesc_ring32(struct bwi_softc *sc, uint32_t ctrl_base,
bus_addr_t paddr, int hdr_size, int ndesc)
{
uint32_t val, addr_hi, addr_lo;
addr_lo = __SHIFTOUT(paddr, BWI_TXRX32_RINGINFO_ADDR_MASK);
addr_hi = __SHIFTOUT(paddr, BWI_TXRX32_RINGINFO_FUNC_MASK);
val = __SHIFTIN(addr_lo, BWI_TXRX32_RINGINFO_ADDR_MASK) |
__SHIFTIN(BWI_TXRX32_RINGINFO_FUNC_TXRX,
BWI_TXRX32_RINGINFO_FUNC_MASK);
CSR_WRITE_4(sc, ctrl_base + BWI_RX32_RINGINFO, val);
val = __SHIFTIN(hdr_size, BWI_RX32_CTRL_HDRSZ_MASK) |
__SHIFTIN(addr_hi, BWI_TXRX32_CTRL_ADDRHI_MASK) |
BWI_TXRX32_CTRL_ENABLE;
CSR_WRITE_4(sc, ctrl_base + BWI_RX32_CTRL, val);
CSR_WRITE_4(sc, ctrl_base + BWI_RX32_INDEX,
(ndesc - 1) * sizeof(struct bwi_desc32));
}
static int
bwi_init_rx_ring32(struct bwi_softc *sc)
{
struct bwi_ring_data *rd = &sc->sc_rx_rdata;
int i, error;
sc->sc_rx_bdata.rbd_idx = 0;
for (i = 0; i < BWI_RX_NDESC; ++i) {
error = bwi_newbuf(sc, i, 1);
if (error) {
device_printf(sc->sc_dev,
"can't allocate %dth RX buffer\n", i);
return error;
}
}
bus_dmamap_sync(sc->sc_rxring_dtag, rd->rdata_dmap,
BUS_DMASYNC_PREWRITE);
bwi_init_rxdesc_ring32(sc, rd->rdata_txrx_ctrl, rd->rdata_paddr,
sizeof(struct bwi_rxbuf_hdr), BWI_RX_NDESC);
return 0;
}
static int
bwi_init_txstats32(struct bwi_softc *sc)
{
struct bwi_txstats_data *st = sc->sc_txstats;
bus_addr_t stats_paddr;
int i;
bzero(st->stats, BWI_TXSTATS_NDESC * sizeof(struct bwi_txstats));
bus_dmamap_sync(st->stats_dtag, st->stats_dmap, BUS_DMASYNC_PREWRITE);
st->stats_idx = 0;
stats_paddr = st->stats_paddr;
for (i = 0; i < BWI_TXSTATS_NDESC; ++i) {
bwi_setup_desc32(sc, st->stats_ring, BWI_TXSTATS_NDESC, i,
stats_paddr, sizeof(struct bwi_txstats), 0);
stats_paddr += sizeof(struct bwi_txstats);
}
bus_dmamap_sync(st->stats_ring_dtag, st->stats_ring_dmap,
BUS_DMASYNC_PREWRITE);
bwi_init_rxdesc_ring32(sc, st->stats_ctrl_base,
st->stats_ring_paddr, 0, BWI_TXSTATS_NDESC);
return 0;
}
static void
bwi_setup_rx_desc32(struct bwi_softc *sc, int buf_idx, bus_addr_t paddr,
int buf_len)
{
struct bwi_ring_data *rd = &sc->sc_rx_rdata;
KASSERT(buf_idx < BWI_RX_NDESC, ("buf_idx %d", buf_idx));
bwi_setup_desc32(sc, rd->rdata_desc, BWI_RX_NDESC, buf_idx,
paddr, buf_len, 0);
}
static void
bwi_setup_tx_desc32(struct bwi_softc *sc, struct bwi_ring_data *rd,
int buf_idx, bus_addr_t paddr, int buf_len)
{
KASSERT(buf_idx < BWI_TX_NDESC, ("buf_idx %d", buf_idx));
bwi_setup_desc32(sc, rd->rdata_desc, BWI_TX_NDESC, buf_idx,
paddr, buf_len, 1);
}
static int
bwi_init_tx_ring64(struct bwi_softc *sc, int ring_idx)
{
/* TODO:64 */
return EOPNOTSUPP;
}
static int
bwi_init_rx_ring64(struct bwi_softc *sc)
{
/* TODO:64 */
return EOPNOTSUPP;
}
static int
bwi_init_txstats64(struct bwi_softc *sc)
{
/* TODO:64 */
return EOPNOTSUPP;
}
static void
bwi_setup_rx_desc64(struct bwi_softc *sc, int buf_idx, bus_addr_t paddr,
int buf_len)
{
/* TODO:64 */
}
static void
bwi_setup_tx_desc64(struct bwi_softc *sc, struct bwi_ring_data *rd,
int buf_idx, bus_addr_t paddr, int buf_len)
{
/* TODO:64 */
}
static void
bwi_dma_buf_addr(void *arg, bus_dma_segment_t *seg, int nseg,
bus_size_t mapsz __unused, int error)
{
if (!error) {
KASSERT(nseg == 1, ("too many segments(%d)\n", nseg));
*((bus_addr_t *)arg) = seg->ds_addr;
}
}
static int
bwi_newbuf(struct bwi_softc *sc, int buf_idx, int init)
{
struct bwi_rxbuf_data *rbd = &sc->sc_rx_bdata;
struct bwi_rxbuf *rxbuf = &rbd->rbd_buf[buf_idx];
struct bwi_rxbuf_hdr *hdr;
bus_dmamap_t map;
bus_addr_t paddr;
struct mbuf *m;
int error;
KASSERT(buf_idx < BWI_RX_NDESC, ("buf_idx %d", buf_idx));
m = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR);
if (m == NULL) {
error = ENOBUFS;
/*
* If the NIC is up and running, we need to:
* - Clear RX buffer's header.
* - Restore RX descriptor settings.
*/
if (init)
return error;
else
goto back;
}
m->m_len = m->m_pkthdr.len = MCLBYTES;
/*
* Try to load RX buf into temporary DMA map
*/
error = bus_dmamap_load_mbuf(sc->sc_buf_dtag, rbd->rbd_tmp_dmap, m,
bwi_dma_buf_addr, &paddr, BUS_DMA_NOWAIT);
if (error) {
m_freem(m);
/*
* See the comment above
*/
if (init)
return error;
else
goto back;
}
if (!init)
bus_dmamap_unload(sc->sc_buf_dtag, rxbuf->rb_dmap);
rxbuf->rb_mbuf = m;
rxbuf->rb_paddr = paddr;
/*
* Swap RX buf's DMA map with the loaded temporary one
*/
map = rxbuf->rb_dmap;
rxbuf->rb_dmap = rbd->rbd_tmp_dmap;
rbd->rbd_tmp_dmap = map;
back:
/*
* Clear RX buf header
*/
hdr = mtod(rxbuf->rb_mbuf, struct bwi_rxbuf_hdr *);
bzero(hdr, sizeof(*hdr));
bus_dmamap_sync(sc->sc_buf_dtag, rxbuf->rb_dmap, BUS_DMASYNC_PREWRITE);
/*
* Setup RX buf descriptor
*/
sc->sc_setup_rxdesc(sc, buf_idx, rxbuf->rb_paddr,
rxbuf->rb_mbuf->m_len - sizeof(*hdr));
return error;
}
static void
bwi_set_addr_filter(struct bwi_softc *sc, uint16_t addr_ofs,
const uint8_t *addr)
{
int i;
CSR_WRITE_2(sc, BWI_ADDR_FILTER_CTRL,
BWI_ADDR_FILTER_CTRL_SET | addr_ofs);
for (i = 0; i < (IEEE80211_ADDR_LEN / 2); ++i) {
uint16_t addr_val;
addr_val = (uint16_t)addr[i * 2] |
(((uint16_t)addr[(i * 2) + 1]) << 8);
CSR_WRITE_2(sc, BWI_ADDR_FILTER_DATA, addr_val);
}
}
static int
bwi_rxeof(struct bwi_softc *sc, int end_idx)
{
struct bwi_ring_data *rd = &sc->sc_rx_rdata;
struct bwi_rxbuf_data *rbd = &sc->sc_rx_bdata;
struct ifnet *ifp = sc->sc_ifp;
struct ieee80211com *ic = ifp->if_l2com;
int idx, rx_data = 0;
idx = rbd->rbd_idx;
while (idx != end_idx) {
struct bwi_rxbuf *rb = &rbd->rbd_buf[idx];
struct bwi_rxbuf_hdr *hdr;
struct ieee80211_frame_min *wh;
struct ieee80211_node *ni;
struct mbuf *m;
const void *plcp;
uint16_t flags2;
int buflen, wh_ofs, hdr_extra, rssi, noise, type, rate;
m = rb->rb_mbuf;
bus_dmamap_sync(sc->sc_buf_dtag, rb->rb_dmap,
BUS_DMASYNC_POSTREAD);
if (bwi_newbuf(sc, idx, 0)) {
ifp->if_ierrors++;
goto next;
}
hdr = mtod(m, struct bwi_rxbuf_hdr *);
flags2 = le16toh(hdr->rxh_flags2);
hdr_extra = 0;
if (flags2 & BWI_RXH_F2_TYPE2FRAME)
hdr_extra = 2;
wh_ofs = hdr_extra + 6; /* XXX magic number */
buflen = le16toh(hdr->rxh_buflen);
if (buflen < BWI_FRAME_MIN_LEN(wh_ofs)) {
if_printf(ifp, "%s: zero length data, hdr_extra %d\n",
__func__, hdr_extra);
ifp->if_ierrors++;
m_freem(m);
goto next;
}
plcp = ((const uint8_t *)(hdr + 1) + hdr_extra);
rssi = bwi_calc_rssi(sc, hdr);
noise = bwi_calc_noise(sc);
m->m_pkthdr.rcvif = ifp;
m->m_len = m->m_pkthdr.len = buflen + sizeof(*hdr);
m_adj(m, sizeof(*hdr) + wh_ofs);
if (htole16(hdr->rxh_flags1) & BWI_RXH_F1_OFDM)
rate = bwi_ofdm_plcp2rate(plcp);
else
rate = bwi_ds_plcp2rate(plcp);
/* RX radio tap */
if (ieee80211_radiotap_active(ic))
bwi_rx_radiotap(sc, m, hdr, plcp, rate, rssi, noise);
m_adj(m, -IEEE80211_CRC_LEN);
BWI_UNLOCK(sc);
wh = mtod(m, struct ieee80211_frame_min *);
ni = ieee80211_find_rxnode(ic, wh);
if (ni != NULL) {
type = ieee80211_input(ni, m, rssi - noise, noise);
ieee80211_free_node(ni);
} else
type = ieee80211_input_all(ic, m, rssi - noise, noise);
if (type == IEEE80211_FC0_TYPE_DATA) {
rx_data = 1;
sc->sc_rx_rate = rate;
}
BWI_LOCK(sc);
next:
idx = (idx + 1) % BWI_RX_NDESC;
if (sc->sc_flags & BWI_F_STOP) {
/*
* Take the fast lane, don't do
* any damage to softc
*/
return -1;
}
}
rbd->rbd_idx = idx;
bus_dmamap_sync(sc->sc_rxring_dtag, rd->rdata_dmap,
BUS_DMASYNC_PREWRITE);
return rx_data;
}
static int
bwi_rxeof32(struct bwi_softc *sc)
{
uint32_t val, rx_ctrl;
int end_idx, rx_data;
rx_ctrl = sc->sc_rx_rdata.rdata_txrx_ctrl;
val = CSR_READ_4(sc, rx_ctrl + BWI_RX32_STATUS);
end_idx = __SHIFTOUT(val, BWI_RX32_STATUS_INDEX_MASK) /
sizeof(struct bwi_desc32);
rx_data = bwi_rxeof(sc, end_idx);
if (rx_data >= 0) {
CSR_WRITE_4(sc, rx_ctrl + BWI_RX32_INDEX,
end_idx * sizeof(struct bwi_desc32));
}
return rx_data;
}
static int
bwi_rxeof64(struct bwi_softc *sc)
{
/* TODO:64 */
return 0;
}
static void
bwi_reset_rx_ring32(struct bwi_softc *sc, uint32_t rx_ctrl)
{
int i;
CSR_WRITE_4(sc, rx_ctrl + BWI_RX32_CTRL, 0);
#define NRETRY 10
for (i = 0; i < NRETRY; ++i) {
uint32_t status;
status = CSR_READ_4(sc, rx_ctrl + BWI_RX32_STATUS);
if (__SHIFTOUT(status, BWI_RX32_STATUS_STATE_MASK) ==
BWI_RX32_STATUS_STATE_DISABLED)
break;
DELAY(1000);
}
if (i == NRETRY)
device_printf(sc->sc_dev, "reset rx ring timedout\n");
#undef NRETRY
CSR_WRITE_4(sc, rx_ctrl + BWI_RX32_RINGINFO, 0);
}
static void
bwi_free_txstats32(struct bwi_softc *sc)
{
bwi_reset_rx_ring32(sc, sc->sc_txstats->stats_ctrl_base);
}
static void
bwi_free_rx_ring32(struct bwi_softc *sc)
{
struct bwi_ring_data *rd = &sc->sc_rx_rdata;
struct bwi_rxbuf_data *rbd = &sc->sc_rx_bdata;
int i;
bwi_reset_rx_ring32(sc, rd->rdata_txrx_ctrl);
for (i = 0; i < BWI_RX_NDESC; ++i) {
struct bwi_rxbuf *rb = &rbd->rbd_buf[i];
if (rb->rb_mbuf != NULL) {
bus_dmamap_unload(sc->sc_buf_dtag, rb->rb_dmap);
m_freem(rb->rb_mbuf);
rb->rb_mbuf = NULL;
}
}
}
static void
bwi_free_tx_ring32(struct bwi_softc *sc, int ring_idx)
{
struct bwi_ring_data *rd;
struct bwi_txbuf_data *tbd;
struct ifnet *ifp = sc->sc_ifp;
uint32_t state, val;
int i;
KASSERT(ring_idx < BWI_TX_NRING, ("ring_idx %d", ring_idx));
rd = &sc->sc_tx_rdata[ring_idx];
tbd = &sc->sc_tx_bdata[ring_idx];
#define NRETRY 10
for (i = 0; i < NRETRY; ++i) {
val = CSR_READ_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_STATUS);
state = __SHIFTOUT(val, BWI_TX32_STATUS_STATE_MASK);
if (state == BWI_TX32_STATUS_STATE_DISABLED ||
state == BWI_TX32_STATUS_STATE_IDLE ||
state == BWI_TX32_STATUS_STATE_STOPPED)
break;
DELAY(1000);
}
if (i == NRETRY) {
if_printf(ifp, "%s: wait for TX ring(%d) stable timed out\n",
__func__, ring_idx);
}
CSR_WRITE_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_CTRL, 0);
for (i = 0; i < NRETRY; ++i) {
val = CSR_READ_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_STATUS);
state = __SHIFTOUT(val, BWI_TX32_STATUS_STATE_MASK);
if (state == BWI_TX32_STATUS_STATE_DISABLED)
break;
DELAY(1000);
}
if (i == NRETRY)
if_printf(ifp, "%s: reset TX ring (%d) timed out\n",
__func__, ring_idx);
#undef NRETRY
DELAY(1000);
CSR_WRITE_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_RINGINFO, 0);
for (i = 0; i < BWI_TX_NDESC; ++i) {
struct bwi_txbuf *tb = &tbd->tbd_buf[i];
if (tb->tb_mbuf != NULL) {
bus_dmamap_unload(sc->sc_buf_dtag, tb->tb_dmap);
m_freem(tb->tb_mbuf);
tb->tb_mbuf = NULL;
}
if (tb->tb_ni != NULL) {
ieee80211_free_node(tb->tb_ni);
tb->tb_ni = NULL;
}
}
}
static void
bwi_free_txstats64(struct bwi_softc *sc)
{
/* TODO:64 */
}
static void
bwi_free_rx_ring64(struct bwi_softc *sc)
{
/* TODO:64 */
}
static void
bwi_free_tx_ring64(struct bwi_softc *sc, int ring_idx)
{
/* TODO:64 */
}
/* XXX does not belong here */
#define IEEE80211_OFDM_PLCP_RATE_MASK __BITS(3, 0)
#define IEEE80211_OFDM_PLCP_LEN_MASK __BITS(16, 5)
static __inline void
bwi_ofdm_plcp_header(uint32_t *plcp0, int pkt_len, uint8_t rate)
{
uint32_t plcp;
plcp = __SHIFTIN(ieee80211_rate2plcp(rate, IEEE80211_T_OFDM),
IEEE80211_OFDM_PLCP_RATE_MASK) |
__SHIFTIN(pkt_len, IEEE80211_OFDM_PLCP_LEN_MASK);
*plcp0 = htole32(plcp);
}
static __inline void
bwi_ds_plcp_header(struct ieee80211_ds_plcp_hdr *plcp, int pkt_len,
uint8_t rate)
{
int len, service, pkt_bitlen;
pkt_bitlen = pkt_len * NBBY;
len = howmany(pkt_bitlen * 2, rate);
service = IEEE80211_PLCP_SERVICE_LOCKED;
if (rate == (11 * 2)) {
int pkt_bitlen1;
/*
* PLCP service field needs to be adjusted,
* if TX rate is 11Mbytes/s
*/
pkt_bitlen1 = len * 11;
if (pkt_bitlen1 - pkt_bitlen >= NBBY)
service |= IEEE80211_PLCP_SERVICE_LENEXT7;
}
plcp->i_signal = ieee80211_rate2plcp(rate, IEEE80211_T_CCK);
plcp->i_service = service;
plcp->i_length = htole16(len);
/* NOTE: do NOT touch i_crc */
}
static __inline void
bwi_plcp_header(const struct ieee80211_rate_table *rt,
void *plcp, int pkt_len, uint8_t rate)
{
enum ieee80211_phytype modtype;
/*
* Assume caller has zeroed 'plcp'
*/
modtype = ieee80211_rate2phytype(rt, rate);
if (modtype == IEEE80211_T_OFDM)
bwi_ofdm_plcp_header(plcp, pkt_len, rate);
else if (modtype == IEEE80211_T_DS)
bwi_ds_plcp_header(plcp, pkt_len, rate);
else
panic("unsupport modulation type %u\n", modtype);
}
static int
bwi_encap(struct bwi_softc *sc, int idx, struct mbuf *m,
struct ieee80211_node *ni)
{
struct ieee80211vap *vap = ni->ni_vap;
struct ifnet *ifp = sc->sc_ifp;
struct ieee80211com *ic = ifp->if_l2com;
struct bwi_ring_data *rd = &sc->sc_tx_rdata[BWI_TX_DATA_RING];
struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[BWI_TX_DATA_RING];
struct bwi_txbuf *tb = &tbd->tbd_buf[idx];
struct bwi_mac *mac;
struct bwi_txbuf_hdr *hdr;
struct ieee80211_frame *wh;
const struct ieee80211_txparam *tp;
uint8_t rate, rate_fb;
uint32_t mac_ctrl;
uint16_t phy_ctrl;
bus_addr_t paddr;
int type, ismcast, pkt_len, error, rix;
#if 0
const uint8_t *p;
int i;
#endif
KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
("current regwin type %d", sc->sc_cur_regwin->rw_type));
mac = (struct bwi_mac *)sc->sc_cur_regwin;
wh = mtod(m, struct ieee80211_frame *);
type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK;
ismcast = IEEE80211_IS_MULTICAST(wh->i_addr1);
/* Get 802.11 frame len before prepending TX header */
pkt_len = m->m_pkthdr.len + IEEE80211_CRC_LEN;
/*
* Find TX rate
*/
tp = &vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)];
if (type != IEEE80211_FC0_TYPE_DATA || (m->m_flags & M_EAPOL)) {
rate = rate_fb = tp->mgmtrate;
} else if (ismcast) {
rate = rate_fb = tp->mcastrate;
} else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE) {
rate = rate_fb = tp->ucastrate;
} else {
rix = ieee80211_ratectl_rate(ni, NULL, pkt_len);
rate = ni->ni_txrate;
if (rix > 0) {
rate_fb = ni->ni_rates.rs_rates[rix-1] &
IEEE80211_RATE_VAL;
} else {
rate_fb = rate;
}
}
tb->tb_rate[0] = rate;
tb->tb_rate[1] = rate_fb;
sc->sc_tx_rate = rate;
/*
* TX radio tap
*/
if (ieee80211_radiotap_active_vap(vap)) {
sc->sc_tx_th.wt_flags = 0;
if (wh->i_fc[1] & IEEE80211_FC1_WEP)
sc->sc_tx_th.wt_flags |= IEEE80211_RADIOTAP_F_WEP;
if (ieee80211_rate2phytype(sc->sc_rates, rate) == IEEE80211_T_DS &&
(ic->ic_flags & IEEE80211_F_SHPREAMBLE) &&
rate != (1 * 2)) {
sc->sc_tx_th.wt_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
}
sc->sc_tx_th.wt_rate = rate;
ieee80211_radiotap_tx(vap, m);
}
/*
* Setup the embedded TX header
*/
M_PREPEND(m, sizeof(*hdr), M_DONTWAIT);
if (m == NULL) {
if_printf(ifp, "%s: prepend TX header failed\n", __func__);
return ENOBUFS;
}
hdr = mtod(m, struct bwi_txbuf_hdr *);
bzero(hdr, sizeof(*hdr));
bcopy(wh->i_fc, hdr->txh_fc, sizeof(hdr->txh_fc));
bcopy(wh->i_addr1, hdr->txh_addr1, sizeof(hdr->txh_addr1));
if (!ismcast) {
uint16_t dur;
dur = ieee80211_ack_duration(sc->sc_rates, rate,
ic->ic_flags & ~IEEE80211_F_SHPREAMBLE);
hdr->txh_fb_duration = htole16(dur);
}
hdr->txh_id = __SHIFTIN(BWI_TX_DATA_RING, BWI_TXH_ID_RING_MASK) |
__SHIFTIN(idx, BWI_TXH_ID_IDX_MASK);
bwi_plcp_header(sc->sc_rates, hdr->txh_plcp, pkt_len, rate);
bwi_plcp_header(sc->sc_rates, hdr->txh_fb_plcp, pkt_len, rate_fb);
phy_ctrl = __SHIFTIN(mac->mac_rf.rf_ant_mode,
BWI_TXH_PHY_C_ANTMODE_MASK);
if (ieee80211_rate2phytype(sc->sc_rates, rate) == IEEE80211_T_OFDM)
phy_ctrl |= BWI_TXH_PHY_C_OFDM;
else if ((ic->ic_flags & IEEE80211_F_SHPREAMBLE) && rate != (2 * 1))
phy_ctrl |= BWI_TXH_PHY_C_SHPREAMBLE;
mac_ctrl = BWI_TXH_MAC_C_HWSEQ | BWI_TXH_MAC_C_FIRST_FRAG;
if (!ismcast)
mac_ctrl |= BWI_TXH_MAC_C_ACK;
if (ieee80211_rate2phytype(sc->sc_rates, rate_fb) == IEEE80211_T_OFDM)
mac_ctrl |= BWI_TXH_MAC_C_FB_OFDM;
hdr->txh_mac_ctrl = htole32(mac_ctrl);
hdr->txh_phy_ctrl = htole16(phy_ctrl);
/* Catch any further usage */
hdr = NULL;
wh = NULL;
/* DMA load */
error = bus_dmamap_load_mbuf(sc->sc_buf_dtag, tb->tb_dmap, m,
bwi_dma_buf_addr, &paddr, BUS_DMA_NOWAIT);
if (error && error != EFBIG) {
if_printf(ifp, "%s: can't load TX buffer (1) %d\n",
__func__, error);
goto back;
}
if (error) { /* error == EFBIG */
struct mbuf *m_new;
m_new = m_defrag(m, M_DONTWAIT);
if (m_new == NULL) {
if_printf(ifp, "%s: can't defrag TX buffer\n",
__func__);
error = ENOBUFS;
goto back;
} else {
m = m_new;
}
error = bus_dmamap_load_mbuf(sc->sc_buf_dtag, tb->tb_dmap, m,
bwi_dma_buf_addr, &paddr,
BUS_DMA_NOWAIT);
if (error) {
if_printf(ifp, "%s: can't load TX buffer (2) %d\n",
__func__, error);
goto back;
}
}
error = 0;
bus_dmamap_sync(sc->sc_buf_dtag, tb->tb_dmap, BUS_DMASYNC_PREWRITE);
tb->tb_mbuf = m;
tb->tb_ni = ni;
#if 0
p = mtod(m, const uint8_t *);
for (i = 0; i < m->m_pkthdr.len; ++i) {
if (i != 0 && i % 8 == 0)
printf("\n");
printf("%02x ", p[i]);
}
printf("\n");
#endif
DPRINTF(sc, BWI_DBG_TX, "idx %d, pkt_len %d, buflen %d\n",
idx, pkt_len, m->m_pkthdr.len);
/* Setup TX descriptor */
sc->sc_setup_txdesc(sc, rd, idx, paddr, m->m_pkthdr.len);
bus_dmamap_sync(sc->sc_txring_dtag, rd->rdata_dmap,
BUS_DMASYNC_PREWRITE);
/* Kick start */
sc->sc_start_tx(sc, rd->rdata_txrx_ctrl, idx);
back:
if (error)
m_freem(m);
return error;
}
static int
bwi_encap_raw(struct bwi_softc *sc, int idx, struct mbuf *m,
struct ieee80211_node *ni, const struct ieee80211_bpf_params *params)
{
struct ifnet *ifp = sc->sc_ifp;
struct ieee80211vap *vap = ni->ni_vap;
struct ieee80211com *ic = ni->ni_ic;
struct bwi_ring_data *rd = &sc->sc_tx_rdata[BWI_TX_DATA_RING];
struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[BWI_TX_DATA_RING];
struct bwi_txbuf *tb = &tbd->tbd_buf[idx];
struct bwi_mac *mac;
struct bwi_txbuf_hdr *hdr;
struct ieee80211_frame *wh;
uint8_t rate, rate_fb;
uint32_t mac_ctrl;
uint16_t phy_ctrl;
bus_addr_t paddr;
int ismcast, pkt_len, error;
KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
("current regwin type %d", sc->sc_cur_regwin->rw_type));
mac = (struct bwi_mac *)sc->sc_cur_regwin;
wh = mtod(m, struct ieee80211_frame *);
ismcast = IEEE80211_IS_MULTICAST(wh->i_addr1);
/* Get 802.11 frame len before prepending TX header */
pkt_len = m->m_pkthdr.len + IEEE80211_CRC_LEN;
/*
* Find TX rate
*/
rate = params->ibp_rate0;
if (!ieee80211_isratevalid(ic->ic_rt, rate)) {
/* XXX fall back to mcast/mgmt rate? */
m_freem(m);
return EINVAL;
}
if (params->ibp_try1 != 0) {
rate_fb = params->ibp_rate1;
if (!ieee80211_isratevalid(ic->ic_rt, rate_fb)) {
/* XXX fall back to rate0? */
m_freem(m);
return EINVAL;
}
} else
rate_fb = rate;
tb->tb_rate[0] = rate;
tb->tb_rate[1] = rate_fb;
sc->sc_tx_rate = rate;
/*
* TX radio tap
*/
if (ieee80211_radiotap_active_vap(vap)) {
sc->sc_tx_th.wt_flags = 0;
/* XXX IEEE80211_BPF_CRYPTO */
if (wh->i_fc[1] & IEEE80211_FC1_WEP)
sc->sc_tx_th.wt_flags |= IEEE80211_RADIOTAP_F_WEP;
if (params->ibp_flags & IEEE80211_BPF_SHORTPRE)
sc->sc_tx_th.wt_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
sc->sc_tx_th.wt_rate = rate;
ieee80211_radiotap_tx(vap, m);
}
/*
* Setup the embedded TX header
*/
M_PREPEND(m, sizeof(*hdr), M_DONTWAIT);
if (m == NULL) {
if_printf(ifp, "%s: prepend TX header failed\n", __func__);
return ENOBUFS;
}
hdr = mtod(m, struct bwi_txbuf_hdr *);
bzero(hdr, sizeof(*hdr));
bcopy(wh->i_fc, hdr->txh_fc, sizeof(hdr->txh_fc));
bcopy(wh->i_addr1, hdr->txh_addr1, sizeof(hdr->txh_addr1));
mac_ctrl = BWI_TXH_MAC_C_HWSEQ | BWI_TXH_MAC_C_FIRST_FRAG;
if (!ismcast && (params->ibp_flags & IEEE80211_BPF_NOACK) == 0) {
uint16_t dur;
dur = ieee80211_ack_duration(sc->sc_rates, rate_fb, 0);
hdr->txh_fb_duration = htole16(dur);
mac_ctrl |= BWI_TXH_MAC_C_ACK;
}
hdr->txh_id = __SHIFTIN(BWI_TX_DATA_RING, BWI_TXH_ID_RING_MASK) |
__SHIFTIN(idx, BWI_TXH_ID_IDX_MASK);
bwi_plcp_header(sc->sc_rates, hdr->txh_plcp, pkt_len, rate);
bwi_plcp_header(sc->sc_rates, hdr->txh_fb_plcp, pkt_len, rate_fb);
phy_ctrl = __SHIFTIN(mac->mac_rf.rf_ant_mode,
BWI_TXH_PHY_C_ANTMODE_MASK);
if (ieee80211_rate2phytype(sc->sc_rates, rate) == IEEE80211_T_OFDM) {
phy_ctrl |= BWI_TXH_PHY_C_OFDM;
mac_ctrl |= BWI_TXH_MAC_C_FB_OFDM;
} else if (params->ibp_flags & IEEE80211_BPF_SHORTPRE)
phy_ctrl |= BWI_TXH_PHY_C_SHPREAMBLE;
hdr->txh_mac_ctrl = htole32(mac_ctrl);
hdr->txh_phy_ctrl = htole16(phy_ctrl);
/* Catch any further usage */
hdr = NULL;
wh = NULL;
/* DMA load */
error = bus_dmamap_load_mbuf(sc->sc_buf_dtag, tb->tb_dmap, m,
bwi_dma_buf_addr, &paddr, BUS_DMA_NOWAIT);
if (error != 0) {
struct mbuf *m_new;
if (error != EFBIG) {
if_printf(ifp, "%s: can't load TX buffer (1) %d\n",
__func__, error);
goto back;
}
m_new = m_defrag(m, M_DONTWAIT);
if (m_new == NULL) {
if_printf(ifp, "%s: can't defrag TX buffer\n",
__func__);
error = ENOBUFS;
goto back;
}
m = m_new;
error = bus_dmamap_load_mbuf(sc->sc_buf_dtag, tb->tb_dmap, m,
bwi_dma_buf_addr, &paddr,
BUS_DMA_NOWAIT);
if (error) {
if_printf(ifp, "%s: can't load TX buffer (2) %d\n",
__func__, error);
goto back;
}
}
bus_dmamap_sync(sc->sc_buf_dtag, tb->tb_dmap, BUS_DMASYNC_PREWRITE);
tb->tb_mbuf = m;
tb->tb_ni = ni;
DPRINTF(sc, BWI_DBG_TX, "idx %d, pkt_len %d, buflen %d\n",
idx, pkt_len, m->m_pkthdr.len);
/* Setup TX descriptor */
sc->sc_setup_txdesc(sc, rd, idx, paddr, m->m_pkthdr.len);
bus_dmamap_sync(sc->sc_txring_dtag, rd->rdata_dmap,
BUS_DMASYNC_PREWRITE);
/* Kick start */
sc->sc_start_tx(sc, rd->rdata_txrx_ctrl, idx);
back:
if (error)
m_freem(m);
return error;
}
static void
bwi_start_tx32(struct bwi_softc *sc, uint32_t tx_ctrl, int idx)
{
idx = (idx + 1) % BWI_TX_NDESC;
CSR_WRITE_4(sc, tx_ctrl + BWI_TX32_INDEX,
idx * sizeof(struct bwi_desc32));
}
static void
bwi_start_tx64(struct bwi_softc *sc, uint32_t tx_ctrl, int idx)
{
/* TODO:64 */
}
static void
bwi_txeof_status32(struct bwi_softc *sc)
{
struct ifnet *ifp = sc->sc_ifp;
uint32_t val, ctrl_base;
int end_idx;
ctrl_base = sc->sc_txstats->stats_ctrl_base;
val = CSR_READ_4(sc, ctrl_base + BWI_RX32_STATUS);
end_idx = __SHIFTOUT(val, BWI_RX32_STATUS_INDEX_MASK) /
sizeof(struct bwi_desc32);
bwi_txeof_status(sc, end_idx);
CSR_WRITE_4(sc, ctrl_base + BWI_RX32_INDEX,
end_idx * sizeof(struct bwi_desc32));
if ((ifp->if_drv_flags & IFF_DRV_OACTIVE) == 0)
ifp->if_start(ifp);
}
static void
bwi_txeof_status64(struct bwi_softc *sc)
{
/* TODO:64 */
}
static void
_bwi_txeof(struct bwi_softc *sc, uint16_t tx_id, int acked, int data_txcnt)
{
struct ifnet *ifp = sc->sc_ifp;
struct bwi_txbuf_data *tbd;
struct bwi_txbuf *tb;
int ring_idx, buf_idx;
struct ieee80211_node *ni;
struct ieee80211vap *vap;
if (tx_id == 0) {
if_printf(ifp, "%s: zero tx id\n", __func__);
return;
}
ring_idx = __SHIFTOUT(tx_id, BWI_TXH_ID_RING_MASK);
buf_idx = __SHIFTOUT(tx_id, BWI_TXH_ID_IDX_MASK);
KASSERT(ring_idx == BWI_TX_DATA_RING, ("ring_idx %d", ring_idx));
KASSERT(buf_idx < BWI_TX_NDESC, ("buf_idx %d", buf_idx));
tbd = &sc->sc_tx_bdata[ring_idx];
KASSERT(tbd->tbd_used > 0, ("tbd_used %d", tbd->tbd_used));
tbd->tbd_used--;
tb = &tbd->tbd_buf[buf_idx];
DPRINTF(sc, BWI_DBG_TXEOF, "txeof idx %d, "
"acked %d, data_txcnt %d, ni %p\n",
buf_idx, acked, data_txcnt, tb->tb_ni);
bus_dmamap_unload(sc->sc_buf_dtag, tb->tb_dmap);
ni = tb->tb_ni;
if (tb->tb_ni != NULL) {
const struct bwi_txbuf_hdr *hdr =
mtod(tb->tb_mbuf, const struct bwi_txbuf_hdr *);
vap = ni->ni_vap;
/* NB: update rate control only for unicast frames */
if (hdr->txh_mac_ctrl & htole32(BWI_TXH_MAC_C_ACK)) {
/*
* Feed back 'acked and data_txcnt'. Note that the
* generic AMRR code only understands one tx rate
* and the estimator doesn't handle real retry counts
* well so to avoid over-aggressive downshifting we
* treat any number of retries as "1".
*/
ieee80211_ratectl_tx_complete(vap, ni,
(data_txcnt > 1) ? IEEE80211_RATECTL_TX_SUCCESS :
IEEE80211_RATECTL_TX_FAILURE, &acked, NULL);
}
/*
* Do any tx complete callback. Note this must
* be done before releasing the node reference.
*/
if (tb->tb_mbuf->m_flags & M_TXCB)
ieee80211_process_callback(ni, tb->tb_mbuf, !acked);
ieee80211_free_node(tb->tb_ni);
tb->tb_ni = NULL;
}
m_freem(tb->tb_mbuf);
tb->tb_mbuf = NULL;
if (tbd->tbd_used == 0)
sc->sc_tx_timer = 0;
ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
}
static void
bwi_txeof_status(struct bwi_softc *sc, int end_idx)
{
struct bwi_txstats_data *st = sc->sc_txstats;
int idx;
bus_dmamap_sync(st->stats_dtag, st->stats_dmap, BUS_DMASYNC_POSTREAD);
idx = st->stats_idx;
while (idx != end_idx) {
const struct bwi_txstats *stats = &st->stats[idx];
if ((stats->txs_flags & BWI_TXS_F_PENDING) == 0) {
int data_txcnt;
data_txcnt = __SHIFTOUT(stats->txs_txcnt,
BWI_TXS_TXCNT_DATA);
_bwi_txeof(sc, le16toh(stats->txs_id),
stats->txs_flags & BWI_TXS_F_ACKED,
data_txcnt);
}
idx = (idx + 1) % BWI_TXSTATS_NDESC;
}
st->stats_idx = idx;
}
static void
bwi_txeof(struct bwi_softc *sc)
{
struct ifnet *ifp = sc->sc_ifp;
for (;;) {
uint32_t tx_status0, tx_status1;
uint16_t tx_id;
int data_txcnt;
tx_status0 = CSR_READ_4(sc, BWI_TXSTATUS0);
if ((tx_status0 & BWI_TXSTATUS0_VALID) == 0)
break;
tx_status1 = CSR_READ_4(sc, BWI_TXSTATUS1);
tx_id = __SHIFTOUT(tx_status0, BWI_TXSTATUS0_TXID_MASK);
data_txcnt = __SHIFTOUT(tx_status0,
BWI_TXSTATUS0_DATA_TXCNT_MASK);
if (tx_status0 & (BWI_TXSTATUS0_AMPDU | BWI_TXSTATUS0_PENDING))
continue;
_bwi_txeof(sc, le16toh(tx_id), tx_status0 & BWI_TXSTATUS0_ACKED,
data_txcnt);
}
if ((ifp->if_drv_flags & IFF_DRV_OACTIVE) == 0)
ifp->if_start(ifp);
}
static int
bwi_bbp_power_on(struct bwi_softc *sc, enum bwi_clock_mode clk_mode)
{
bwi_power_on(sc, 1);
return bwi_set_clock_mode(sc, clk_mode);
}
static void
bwi_bbp_power_off(struct bwi_softc *sc)
{
bwi_set_clock_mode(sc, BWI_CLOCK_MODE_SLOW);
bwi_power_off(sc, 1);
}
static int
bwi_get_pwron_delay(struct bwi_softc *sc)
{
struct bwi_regwin *com, *old;
struct bwi_clock_freq freq;
uint32_t val;
int error;
com = &sc->sc_com_regwin;
KASSERT(BWI_REGWIN_EXIST(com), ("no regwin"));
if ((sc->sc_cap & BWI_CAP_CLKMODE) == 0)
return 0;
error = bwi_regwin_switch(sc, com, &old);
if (error)
return error;
bwi_get_clock_freq(sc, &freq);
val = CSR_READ_4(sc, BWI_PLL_ON_DELAY);
sc->sc_pwron_delay = howmany((val + 2) * 1000000, freq.clkfreq_min);
DPRINTF(sc, BWI_DBG_ATTACH, "power on delay %u\n", sc->sc_pwron_delay);
return bwi_regwin_switch(sc, old, NULL);
}
static int
bwi_bus_attach(struct bwi_softc *sc)
{
struct bwi_regwin *bus, *old;
int error;
bus = &sc->sc_bus_regwin;
error = bwi_regwin_switch(sc, bus, &old);
if (error)
return error;
if (!bwi_regwin_is_enabled(sc, bus))
bwi_regwin_enable(sc, bus, 0);
/* Disable interripts */
CSR_WRITE_4(sc, BWI_INTRVEC, 0);
return bwi_regwin_switch(sc, old, NULL);
}
static const char *
bwi_regwin_name(const struct bwi_regwin *rw)
{
switch (rw->rw_type) {
case BWI_REGWIN_T_COM:
return "COM";
case BWI_REGWIN_T_BUSPCI:
return "PCI";
case BWI_REGWIN_T_MAC:
return "MAC";
case BWI_REGWIN_T_BUSPCIE:
return "PCIE";
}
panic("unknown regwin type 0x%04x\n", rw->rw_type);
return NULL;
}
static uint32_t
bwi_regwin_disable_bits(struct bwi_softc *sc)
{
uint32_t busrev;
/* XXX cache this */
busrev = __SHIFTOUT(CSR_READ_4(sc, BWI_ID_LO), BWI_ID_LO_BUSREV_MASK);
DPRINTF(sc, BWI_DBG_ATTACH | BWI_DBG_INIT | BWI_DBG_MISC,
"bus rev %u\n", busrev);
if (busrev == BWI_BUSREV_0)
return BWI_STATE_LO_DISABLE1;
else if (busrev == BWI_BUSREV_1)
return BWI_STATE_LO_DISABLE2;
else
return (BWI_STATE_LO_DISABLE1 | BWI_STATE_LO_DISABLE2);
}
int
bwi_regwin_is_enabled(struct bwi_softc *sc, struct bwi_regwin *rw)
{
uint32_t val, disable_bits;
disable_bits = bwi_regwin_disable_bits(sc);
val = CSR_READ_4(sc, BWI_STATE_LO);
if ((val & (BWI_STATE_LO_CLOCK |
BWI_STATE_LO_RESET |
disable_bits)) == BWI_STATE_LO_CLOCK) {
DPRINTF(sc, BWI_DBG_ATTACH | BWI_DBG_INIT, "%s is enabled\n",
bwi_regwin_name(rw));
return 1;
} else {
DPRINTF(sc, BWI_DBG_ATTACH | BWI_DBG_INIT, "%s is disabled\n",
bwi_regwin_name(rw));
return 0;
}
}
void
bwi_regwin_disable(struct bwi_softc *sc, struct bwi_regwin *rw, uint32_t flags)
{
uint32_t state_lo, disable_bits;
int i;
state_lo = CSR_READ_4(sc, BWI_STATE_LO);
/*
* If current regwin is in 'reset' state, it was already disabled.
*/
if (state_lo & BWI_STATE_LO_RESET) {
DPRINTF(sc, BWI_DBG_ATTACH | BWI_DBG_INIT,
"%s was already disabled\n", bwi_regwin_name(rw));
return;
}
disable_bits = bwi_regwin_disable_bits(sc);
/*
* Disable normal clock
*/
state_lo = BWI_STATE_LO_CLOCK | disable_bits;
CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
/*
* Wait until normal clock is disabled
*/
#define NRETRY 1000
for (i = 0; i < NRETRY; ++i) {
state_lo = CSR_READ_4(sc, BWI_STATE_LO);
if (state_lo & disable_bits)
break;
DELAY(10);
}
if (i == NRETRY) {
device_printf(sc->sc_dev, "%s disable clock timeout\n",
bwi_regwin_name(rw));
}
for (i = 0; i < NRETRY; ++i) {
uint32_t state_hi;
state_hi = CSR_READ_4(sc, BWI_STATE_HI);
if ((state_hi & BWI_STATE_HI_BUSY) == 0)
break;
DELAY(10);
}
if (i == NRETRY) {
device_printf(sc->sc_dev, "%s wait BUSY unset timeout\n",
bwi_regwin_name(rw));
}
#undef NRETRY
/*
* Reset and disable regwin with gated clock
*/
state_lo = BWI_STATE_LO_RESET | disable_bits |
BWI_STATE_LO_CLOCK | BWI_STATE_LO_GATED_CLOCK |
__SHIFTIN(flags, BWI_STATE_LO_FLAGS_MASK);
CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
/* Flush pending bus write */
CSR_READ_4(sc, BWI_STATE_LO);
DELAY(1);
/* Reset and disable regwin */
state_lo = BWI_STATE_LO_RESET | disable_bits |
__SHIFTIN(flags, BWI_STATE_LO_FLAGS_MASK);
CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
/* Flush pending bus write */
CSR_READ_4(sc, BWI_STATE_LO);
DELAY(1);
}
void
bwi_regwin_enable(struct bwi_softc *sc, struct bwi_regwin *rw, uint32_t flags)
{
uint32_t state_lo, state_hi, imstate;
bwi_regwin_disable(sc, rw, flags);
/* Reset regwin with gated clock */
state_lo = BWI_STATE_LO_RESET |
BWI_STATE_LO_CLOCK |
BWI_STATE_LO_GATED_CLOCK |
__SHIFTIN(flags, BWI_STATE_LO_FLAGS_MASK);
CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
/* Flush pending bus write */
CSR_READ_4(sc, BWI_STATE_LO);
DELAY(1);
state_hi = CSR_READ_4(sc, BWI_STATE_HI);
if (state_hi & BWI_STATE_HI_SERROR)
CSR_WRITE_4(sc, BWI_STATE_HI, 0);
imstate = CSR_READ_4(sc, BWI_IMSTATE);
if (imstate & (BWI_IMSTATE_INBAND_ERR | BWI_IMSTATE_TIMEOUT)) {
imstate &= ~(BWI_IMSTATE_INBAND_ERR | BWI_IMSTATE_TIMEOUT);
CSR_WRITE_4(sc, BWI_IMSTATE, imstate);
}
/* Enable regwin with gated clock */
state_lo = BWI_STATE_LO_CLOCK |
BWI_STATE_LO_GATED_CLOCK |
__SHIFTIN(flags, BWI_STATE_LO_FLAGS_MASK);
CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
/* Flush pending bus write */
CSR_READ_4(sc, BWI_STATE_LO);
DELAY(1);
/* Enable regwin with normal clock */
state_lo = BWI_STATE_LO_CLOCK |
__SHIFTIN(flags, BWI_STATE_LO_FLAGS_MASK);
CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
/* Flush pending bus write */
CSR_READ_4(sc, BWI_STATE_LO);
DELAY(1);
}
static void
bwi_set_bssid(struct bwi_softc *sc, const uint8_t *bssid)
{
struct ifnet *ifp = sc->sc_ifp;
struct bwi_mac *mac;
struct bwi_myaddr_bssid buf;
const uint8_t *p;
uint32_t val;
int n, i;
KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
("current regwin type %d", sc->sc_cur_regwin->rw_type));
mac = (struct bwi_mac *)sc->sc_cur_regwin;
bwi_set_addr_filter(sc, BWI_ADDR_FILTER_BSSID, bssid);
bcopy(IF_LLADDR(ifp), buf.myaddr, sizeof(buf.myaddr));
bcopy(bssid, buf.bssid, sizeof(buf.bssid));
n = sizeof(buf) / sizeof(val);
p = (const uint8_t *)&buf;
for (i = 0; i < n; ++i) {
int j;
val = 0;
for (j = 0; j < sizeof(val); ++j)
val |= ((uint32_t)(*p++)) << (j * 8);
TMPLT_WRITE_4(mac, 0x20 + (i * sizeof(val)), val);
}
}
static void
bwi_updateslot(struct ifnet *ifp)
{
struct bwi_softc *sc = ifp->if_softc;
struct ieee80211com *ic = ifp->if_l2com;
struct bwi_mac *mac;
BWI_LOCK(sc);
if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
DPRINTF(sc, BWI_DBG_80211, "%s\n", __func__);
KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
("current regwin type %d", sc->sc_cur_regwin->rw_type));
mac = (struct bwi_mac *)sc->sc_cur_regwin;
bwi_mac_updateslot(mac, (ic->ic_flags & IEEE80211_F_SHSLOT));
}
BWI_UNLOCK(sc);
}
static void
bwi_calibrate(void *xsc)
{
struct bwi_softc *sc = xsc;
#ifdef INVARIANTS
struct ifnet *ifp = sc->sc_ifp;
struct ieee80211com *ic = ifp->if_l2com;
#endif
struct bwi_mac *mac;
BWI_ASSERT_LOCKED(sc);
KASSERT(ic->ic_opmode != IEEE80211_M_MONITOR,
("opmode %d", ic->ic_opmode));
KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
("current regwin type %d", sc->sc_cur_regwin->rw_type));
mac = (struct bwi_mac *)sc->sc_cur_regwin;
bwi_mac_calibrate_txpower(mac, sc->sc_txpwrcb_type);
sc->sc_txpwrcb_type = BWI_TXPWR_CALIB;
/* XXX 15 seconds */
callout_reset(&sc->sc_calib_ch, hz * 15, bwi_calibrate, sc);
}
static int
bwi_calc_rssi(struct bwi_softc *sc, const struct bwi_rxbuf_hdr *hdr)
{
struct bwi_mac *mac;
KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
("current regwin type %d", sc->sc_cur_regwin->rw_type));
mac = (struct bwi_mac *)sc->sc_cur_regwin;
return bwi_rf_calc_rssi(mac, hdr);
}
static int
bwi_calc_noise(struct bwi_softc *sc)
{
struct bwi_mac *mac;
KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
("current regwin type %d", sc->sc_cur_regwin->rw_type));
mac = (struct bwi_mac *)sc->sc_cur_regwin;
return bwi_rf_calc_noise(mac);
}
static __inline uint8_t
bwi_ofdm_plcp2rate(const uint32_t *plcp0)
{
uint32_t plcp;
uint8_t plcp_rate;
plcp = le32toh(*plcp0);
plcp_rate = __SHIFTOUT(plcp, IEEE80211_OFDM_PLCP_RATE_MASK);
return ieee80211_plcp2rate(plcp_rate, IEEE80211_T_OFDM);
}
static __inline uint8_t
bwi_ds_plcp2rate(const struct ieee80211_ds_plcp_hdr *hdr)
{
return ieee80211_plcp2rate(hdr->i_signal, IEEE80211_T_DS);
}
static void
bwi_rx_radiotap(struct bwi_softc *sc, struct mbuf *m,
struct bwi_rxbuf_hdr *hdr, const void *plcp, int rate, int rssi, int noise)
{
const struct ieee80211_frame_min *wh;
sc->sc_rx_th.wr_flags = IEEE80211_RADIOTAP_F_FCS;
if (htole16(hdr->rxh_flags1) & BWI_RXH_F1_SHPREAMBLE)
sc->sc_rx_th.wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
wh = mtod(m, const struct ieee80211_frame_min *);
if (wh->i_fc[1] & IEEE80211_FC1_WEP)
sc->sc_rx_th.wr_flags |= IEEE80211_RADIOTAP_F_WEP;
sc->sc_rx_th.wr_tsf = hdr->rxh_tsf; /* No endian convertion */
sc->sc_rx_th.wr_rate = rate;
sc->sc_rx_th.wr_antsignal = rssi;
sc->sc_rx_th.wr_antnoise = noise;
}
static void
bwi_led_attach(struct bwi_softc *sc)
{
const uint8_t *led_act = NULL;
uint16_t gpio, val[BWI_LED_MAX];
int i;
#define N(arr) (int)(sizeof(arr) / sizeof(arr[0]))
for (i = 0; i < N(bwi_vendor_led_act); ++i) {
if (sc->sc_pci_subvid == bwi_vendor_led_act[i].vid) {
led_act = bwi_vendor_led_act[i].led_act;
break;
}
}
if (led_act == NULL)
led_act = bwi_default_led_act;
#undef N
gpio = bwi_read_sprom(sc, BWI_SPROM_GPIO01);
val[0] = __SHIFTOUT(gpio, BWI_SPROM_GPIO_0);
val[1] = __SHIFTOUT(gpio, BWI_SPROM_GPIO_1);
gpio = bwi_read_sprom(sc, BWI_SPROM_GPIO23);
val[2] = __SHIFTOUT(gpio, BWI_SPROM_GPIO_2);
val[3] = __SHIFTOUT(gpio, BWI_SPROM_GPIO_3);
for (i = 0; i < BWI_LED_MAX; ++i) {
struct bwi_led *led = &sc->sc_leds[i];
if (val[i] == 0xff) {
led->l_act = led_act[i];
} else {
if (val[i] & BWI_LED_ACT_LOW)
led->l_flags |= BWI_LED_F_ACTLOW;
led->l_act = __SHIFTOUT(val[i], BWI_LED_ACT_MASK);
}
led->l_mask = (1 << i);
if (led->l_act == BWI_LED_ACT_BLINK_SLOW ||
led->l_act == BWI_LED_ACT_BLINK_POLL ||
led->l_act == BWI_LED_ACT_BLINK) {
led->l_flags |= BWI_LED_F_BLINK;
if (led->l_act == BWI_LED_ACT_BLINK_POLL)
led->l_flags |= BWI_LED_F_POLLABLE;
else if (led->l_act == BWI_LED_ACT_BLINK_SLOW)
led->l_flags |= BWI_LED_F_SLOW;
if (sc->sc_blink_led == NULL) {
sc->sc_blink_led = led;
if (led->l_flags & BWI_LED_F_SLOW)
BWI_LED_SLOWDOWN(sc->sc_led_idle);
}
}
DPRINTF(sc, BWI_DBG_LED | BWI_DBG_ATTACH,
"%dth led, act %d, lowact %d\n", i,
led->l_act, led->l_flags & BWI_LED_F_ACTLOW);
}
callout_init_mtx(&sc->sc_led_blink_ch, &sc->sc_mtx, 0);
}
static __inline uint16_t
bwi_led_onoff(const struct bwi_led *led, uint16_t val, int on)
{
if (led->l_flags & BWI_LED_F_ACTLOW)
on = !on;
if (on)
val |= led->l_mask;
else
val &= ~led->l_mask;
return val;
}
static void
bwi_led_newstate(struct bwi_softc *sc, enum ieee80211_state nstate)
{
struct ifnet *ifp = sc->sc_ifp;
struct ieee80211com *ic = ifp->if_l2com;
uint16_t val;
int i;
if (nstate == IEEE80211_S_INIT) {
callout_stop(&sc->sc_led_blink_ch);
sc->sc_led_blinking = 0;
}
if ((ic->ic_ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
return;
val = CSR_READ_2(sc, BWI_MAC_GPIO_CTRL);
for (i = 0; i < BWI_LED_MAX; ++i) {
struct bwi_led *led = &sc->sc_leds[i];
int on;
if (led->l_act == BWI_LED_ACT_UNKN ||
led->l_act == BWI_LED_ACT_NULL)
continue;
if ((led->l_flags & BWI_LED_F_BLINK) &&
nstate != IEEE80211_S_INIT)
continue;
switch (led->l_act) {
case BWI_LED_ACT_ON: /* Always on */
on = 1;
break;
case BWI_LED_ACT_OFF: /* Always off */
case BWI_LED_ACT_5GHZ: /* TODO: 11A */
on = 0;
break;
default:
on = 1;
switch (nstate) {
case IEEE80211_S_INIT:
on = 0;
break;
case IEEE80211_S_RUN:
if (led->l_act == BWI_LED_ACT_11G &&
ic->ic_curmode != IEEE80211_MODE_11G)
on = 0;
break;
default:
if (led->l_act == BWI_LED_ACT_ASSOC)
on = 0;
break;
}
break;
}
val = bwi_led_onoff(led, val, on);
}
CSR_WRITE_2(sc, BWI_MAC_GPIO_CTRL, val);
}
static void
bwi_led_event(struct bwi_softc *sc, int event)
{
struct bwi_led *led = sc->sc_blink_led;
int rate;
if (event == BWI_LED_EVENT_POLL) {
if ((led->l_flags & BWI_LED_F_POLLABLE) == 0)
return;
if (ticks - sc->sc_led_ticks < sc->sc_led_idle)
return;
}
sc->sc_led_ticks = ticks;
if (sc->sc_led_blinking)
return;
switch (event) {
case BWI_LED_EVENT_RX:
rate = sc->sc_rx_rate;
break;
case BWI_LED_EVENT_TX:
rate = sc->sc_tx_rate;
break;
case BWI_LED_EVENT_POLL:
rate = 0;
break;
default:
panic("unknown LED event %d\n", event);
break;
}
bwi_led_blink_start(sc, bwi_led_duration[rate].on_dur,
bwi_led_duration[rate].off_dur);
}
static void
bwi_led_blink_start(struct bwi_softc *sc, int on_dur, int off_dur)
{
struct bwi_led *led = sc->sc_blink_led;
uint16_t val;
val = CSR_READ_2(sc, BWI_MAC_GPIO_CTRL);
val = bwi_led_onoff(led, val, 1);
CSR_WRITE_2(sc, BWI_MAC_GPIO_CTRL, val);
if (led->l_flags & BWI_LED_F_SLOW) {
BWI_LED_SLOWDOWN(on_dur);
BWI_LED_SLOWDOWN(off_dur);
}
sc->sc_led_blinking = 1;
sc->sc_led_blink_offdur = off_dur;
callout_reset(&sc->sc_led_blink_ch, on_dur, bwi_led_blink_next, sc);
}
static void
bwi_led_blink_next(void *xsc)
{
struct bwi_softc *sc = xsc;
uint16_t val;
val = CSR_READ_2(sc, BWI_MAC_GPIO_CTRL);
val = bwi_led_onoff(sc->sc_blink_led, val, 0);
CSR_WRITE_2(sc, BWI_MAC_GPIO_CTRL, val);
callout_reset(&sc->sc_led_blink_ch, sc->sc_led_blink_offdur,
bwi_led_blink_end, sc);
}
static void
bwi_led_blink_end(void *xsc)
{
struct bwi_softc *sc = xsc;
sc->sc_led_blinking = 0;
}
static void
bwi_restart(void *xsc, int pending)
{
struct bwi_softc *sc = xsc;
struct ifnet *ifp = sc->sc_ifp;
if_printf(ifp, "%s begin, help!\n", __func__);
BWI_LOCK(sc);
bwi_init_statechg(xsc, 0);
#if 0
bwi_start_locked(ifp);
#endif
BWI_UNLOCK(sc);
}
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