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freebsd-dev/sys/dev/usb/wlan/if_upgt.c
Gleb Smirnoff 7a79cebfba Replay r286410. Change KPI of how device drivers that provide wireless 
connectivity interact with the net80211 stack.

Historical background: originally wireless devices created an interface,
just like Ethernet devices do. Name of an interface matched the name of
the driver that created. Later, wlan(4) layer was introduced, and the
wlanX interfaces become the actual interface, leaving original ones as
"a parent interface" of wlanX. Kernelwise, the KPI between net80211 layer
and a driver became a mix of methods that pass a pointer to struct ifnet
as identifier and methods that pass pointer to struct ieee80211com. From
user point of view, the parent interface just hangs on in the ifconfig
list, and user can't do anything useful with it.

Now, the struct ifnet goes away. The struct ieee80211com is the only
KPI between a device driver and net80211. Details:

- The struct ieee80211com is embedded into drivers softc.
- Packets are sent via new ic_transmit method, which is very much like
  the previous if_transmit.
- Bringing parent up/down is done via new ic_parent method, which notifies
  driver about any changes: number of wlan(4) interfaces, number of them
  in promisc or allmulti state.
- Device specific ioctls (if any) are received on new ic_ioctl method.
- Packets/errors accounting are done by the stack. In certain cases, when
  driver experiences errors and can not attribute them to any specific
  interface, driver updates ic_oerrors or ic_ierrors counters.

Details on interface configuration with new world order:
- A sequence of commands needed to bring up wireless DOESN"T change.
- /etc/rc.conf parameters DON'T change.
- List of devices that can be used to create wlan(4) interfaces is
  now provided by net.wlan.devices sysctl.

Most drivers in this change were converted by me, except of wpi(4),
that was done by Andriy Voskoboinyk. Big thanks to Kevin Lo for testing
changes to at least 8 drivers. Thanks to pluknet@, Oliver Hartmann,
Olivier Cochard, gjb@, mmoll@, op@ and lev@, who also participated in
testing.

Reviewed by:	adrian
Sponsored by:	Netflix
Sponsored by:	Nginx, Inc.
2015-08-27 08:56:39 +00:00

2356 lines
60 KiB
C
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/* $OpenBSD: if_upgt.c,v 1.35 2008/04/16 18:32:15 damien Exp $ */
/* $FreeBSD$ */
/*
* Copyright (c) 2007 Marcus Glocker <mglocker@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/endian.h>
#include <sys/firmware.h>
#include <sys/linker.h>
#include <sys/mbuf.h>
#include <sys/malloc.h>
#include <sys/module.h>
#include <sys/socket.h>
#include <sys/sockio.h>
#include <sys/sysctl.h>
#include <net/if.h>
#include <net/if_var.h>
#include <net/if_arp.h>
#include <net/ethernet.h>
#include <net/if_dl.h>
#include <net/if_media.h>
#include <net/if_types.h>
#include <sys/bus.h>
#include <machine/bus.h>
#include <net80211/ieee80211_var.h>
#include <net80211/ieee80211_phy.h>
#include <net80211/ieee80211_radiotap.h>
#include <net80211/ieee80211_regdomain.h>
#include <net/bpf.h>
#include <dev/usb/usb.h>
#include <dev/usb/usbdi.h>
#include "usbdevs.h"
#include <dev/usb/wlan/if_upgtvar.h>
/*
* Driver for the USB PrismGT devices.
*
* For now just USB 2.0 devices with the GW3887 chipset are supported.
* The driver has been written based on the firmware version 2.13.1.0_LM87.
*
* TODO's:
* - MONITOR mode test.
* - Add HOSTAP mode.
* - Add IBSS mode.
* - Support the USB 1.0 devices (NET2280, ISL3880, ISL3886 chipsets).
*
* Parts of this driver has been influenced by reading the p54u driver
* written by Jean-Baptiste Note <jean-baptiste.note@m4x.org> and
* Sebastien Bourdeauducq <lekernel@prism54.org>.
*/
static SYSCTL_NODE(_hw, OID_AUTO, upgt, CTLFLAG_RD, 0,
"USB PrismGT GW3887 driver parameters");
#ifdef UPGT_DEBUG
int upgt_debug = 0;
SYSCTL_INT(_hw_upgt, OID_AUTO, debug, CTLFLAG_RWTUN, &upgt_debug,
0, "control debugging printfs");
enum {
UPGT_DEBUG_XMIT = 0x00000001, /* basic xmit operation */
UPGT_DEBUG_RECV = 0x00000002, /* basic recv operation */
UPGT_DEBUG_RESET = 0x00000004, /* reset processing */
UPGT_DEBUG_INTR = 0x00000008, /* INTR */
UPGT_DEBUG_TX_PROC = 0x00000010, /* tx ISR proc */
UPGT_DEBUG_RX_PROC = 0x00000020, /* rx ISR proc */
UPGT_DEBUG_STATE = 0x00000040, /* 802.11 state transitions */
UPGT_DEBUG_STAT = 0x00000080, /* statistic */
UPGT_DEBUG_FW = 0x00000100, /* firmware */
UPGT_DEBUG_ANY = 0xffffffff
};
#define DPRINTF(sc, m, fmt, ...) do { \
if (sc->sc_debug & (m)) \
printf(fmt, __VA_ARGS__); \
} while (0)
#else
#define DPRINTF(sc, m, fmt, ...) do { \
(void) sc; \
} while (0)
#endif
/*
* Prototypes.
*/
static device_probe_t upgt_match;
static device_attach_t upgt_attach;
static device_detach_t upgt_detach;
static int upgt_alloc_tx(struct upgt_softc *);
static int upgt_alloc_rx(struct upgt_softc *);
static int upgt_device_reset(struct upgt_softc *);
static void upgt_bulk_tx(struct upgt_softc *, struct upgt_data *);
static int upgt_fw_verify(struct upgt_softc *);
static int upgt_mem_init(struct upgt_softc *);
static int upgt_fw_load(struct upgt_softc *);
static int upgt_fw_copy(const uint8_t *, char *, int);
static uint32_t upgt_crc32_le(const void *, size_t);
static struct mbuf *
upgt_rxeof(struct usb_xfer *, struct upgt_data *, int *);
static struct mbuf *
upgt_rx(struct upgt_softc *, uint8_t *, int, int *);
static void upgt_txeof(struct usb_xfer *, struct upgt_data *);
static int upgt_eeprom_read(struct upgt_softc *);
static int upgt_eeprom_parse(struct upgt_softc *);
static void upgt_eeprom_parse_hwrx(struct upgt_softc *, uint8_t *);
static void upgt_eeprom_parse_freq3(struct upgt_softc *, uint8_t *, int);
static void upgt_eeprom_parse_freq4(struct upgt_softc *, uint8_t *, int);
static void upgt_eeprom_parse_freq6(struct upgt_softc *, uint8_t *, int);
static uint32_t upgt_chksum_le(const uint32_t *, size_t);
static void upgt_tx_done(struct upgt_softc *, uint8_t *);
static void upgt_init(struct upgt_softc *);
static void upgt_parent(struct ieee80211com *);
static int upgt_transmit(struct ieee80211com *, struct mbuf *);
static void upgt_start(struct upgt_softc *);
static int upgt_raw_xmit(struct ieee80211_node *, struct mbuf *,
const struct ieee80211_bpf_params *);
static void upgt_scan_start(struct ieee80211com *);
static void upgt_scan_end(struct ieee80211com *);
static void upgt_set_channel(struct ieee80211com *);
static struct ieee80211vap *upgt_vap_create(struct ieee80211com *,
const char [IFNAMSIZ], int, enum ieee80211_opmode, int,
const uint8_t [IEEE80211_ADDR_LEN],
const uint8_t [IEEE80211_ADDR_LEN]);
static void upgt_vap_delete(struct ieee80211vap *);
static void upgt_update_mcast(struct ieee80211com *);
static uint8_t upgt_rx_rate(struct upgt_softc *, const int);
static void upgt_set_multi(void *);
static void upgt_stop(struct upgt_softc *);
static void upgt_setup_rates(struct ieee80211vap *, struct ieee80211com *);
static int upgt_set_macfilter(struct upgt_softc *, uint8_t);
static int upgt_newstate(struct ieee80211vap *, enum ieee80211_state, int);
static void upgt_set_chan(struct upgt_softc *, struct ieee80211_channel *);
static void upgt_set_led(struct upgt_softc *, int);
static void upgt_set_led_blink(void *);
static void upgt_get_stats(struct upgt_softc *);
static void upgt_mem_free(struct upgt_softc *, uint32_t);
static uint32_t upgt_mem_alloc(struct upgt_softc *);
static void upgt_free_tx(struct upgt_softc *);
static void upgt_free_rx(struct upgt_softc *);
static void upgt_watchdog(void *);
static void upgt_abort_xfers(struct upgt_softc *);
static void upgt_abort_xfers_locked(struct upgt_softc *);
static void upgt_sysctl_node(struct upgt_softc *);
static struct upgt_data *
upgt_getbuf(struct upgt_softc *);
static struct upgt_data *
upgt_gettxbuf(struct upgt_softc *);
static int upgt_tx_start(struct upgt_softc *, struct mbuf *,
struct ieee80211_node *, struct upgt_data *);
static const char *upgt_fwname = "upgt-gw3887";
static const STRUCT_USB_HOST_ID upgt_devs[] = {
#define UPGT_DEV(v,p) { USB_VP(USB_VENDOR_##v, USB_PRODUCT_##v##_##p) }
/* version 2 devices */
UPGT_DEV(ACCTON, PRISM_GT),
UPGT_DEV(BELKIN, F5D7050),
UPGT_DEV(CISCOLINKSYS, WUSB54AG),
UPGT_DEV(CONCEPTRONIC, PRISM_GT),
UPGT_DEV(DELL, PRISM_GT_1),
UPGT_DEV(DELL, PRISM_GT_2),
UPGT_DEV(FSC, E5400),
UPGT_DEV(GLOBESPAN, PRISM_GT_1),
UPGT_DEV(GLOBESPAN, PRISM_GT_2),
UPGT_DEV(NETGEAR, WG111V1_2),
UPGT_DEV(INTERSIL, PRISM_GT),
UPGT_DEV(SMC, 2862WG),
UPGT_DEV(USR, USR5422),
UPGT_DEV(WISTRONNEWEB, UR045G),
UPGT_DEV(XYRATEX, PRISM_GT_1),
UPGT_DEV(XYRATEX, PRISM_GT_2),
UPGT_DEV(ZCOM, XG703A),
UPGT_DEV(ZCOM, XM142)
};
static usb_callback_t upgt_bulk_rx_callback;
static usb_callback_t upgt_bulk_tx_callback;
static const struct usb_config upgt_config[UPGT_N_XFERS] = {
[UPGT_BULK_TX] = {
.type = UE_BULK,
.endpoint = UE_ADDR_ANY,
.direction = UE_DIR_OUT,
.bufsize = MCLBYTES * UPGT_TX_MAXCOUNT,
.flags = {
.force_short_xfer = 1,
.pipe_bof = 1
},
.callback = upgt_bulk_tx_callback,
.timeout = UPGT_USB_TIMEOUT, /* ms */
},
[UPGT_BULK_RX] = {
.type = UE_BULK,
.endpoint = UE_ADDR_ANY,
.direction = UE_DIR_IN,
.bufsize = MCLBYTES * UPGT_RX_MAXCOUNT,
.flags = {
.pipe_bof = 1,
.short_xfer_ok = 1
},
.callback = upgt_bulk_rx_callback,
},
};
static int
upgt_match(device_t dev)
{
struct usb_attach_arg *uaa = device_get_ivars(dev);
if (uaa->usb_mode != USB_MODE_HOST)
return (ENXIO);
if (uaa->info.bConfigIndex != UPGT_CONFIG_INDEX)
return (ENXIO);
if (uaa->info.bIfaceIndex != UPGT_IFACE_INDEX)
return (ENXIO);
return (usbd_lookup_id_by_uaa(upgt_devs, sizeof(upgt_devs), uaa));
}
static int
upgt_attach(device_t dev)
{
struct upgt_softc *sc = device_get_softc(dev);
struct ieee80211com *ic = &sc->sc_ic;
struct usb_attach_arg *uaa = device_get_ivars(dev);
uint8_t bands, iface_index = UPGT_IFACE_INDEX;
int error;
sc->sc_dev = dev;
sc->sc_udev = uaa->device;
#ifdef UPGT_DEBUG
sc->sc_debug = upgt_debug;
#endif
device_set_usb_desc(dev);
mtx_init(&sc->sc_mtx, device_get_nameunit(sc->sc_dev), MTX_NETWORK_LOCK,
MTX_DEF);
callout_init(&sc->sc_led_ch, 0);
callout_init(&sc->sc_watchdog_ch, 0);
mbufq_init(&sc->sc_snd, ifqmaxlen);
error = usbd_transfer_setup(uaa->device, &iface_index, sc->sc_xfer,
upgt_config, UPGT_N_XFERS, sc, &sc->sc_mtx);
if (error) {
device_printf(dev, "could not allocate USB transfers, "
"err=%s\n", usbd_errstr(error));
goto fail1;
}
sc->sc_rx_dma_buf = usbd_xfer_get_frame_buffer(
sc->sc_xfer[UPGT_BULK_RX], 0);
sc->sc_tx_dma_buf = usbd_xfer_get_frame_buffer(
sc->sc_xfer[UPGT_BULK_TX], 0);
/* Setup TX and RX buffers */
error = upgt_alloc_tx(sc);
if (error)
goto fail2;
error = upgt_alloc_rx(sc);
if (error)
goto fail3;
/* Initialize the device. */
error = upgt_device_reset(sc);
if (error)
goto fail4;
/* Verify the firmware. */
error = upgt_fw_verify(sc);
if (error)
goto fail4;
/* Calculate device memory space. */
if (sc->sc_memaddr_frame_start == 0 || sc->sc_memaddr_frame_end == 0) {
device_printf(dev,
"could not find memory space addresses on FW\n");
error = EIO;
goto fail4;
}
sc->sc_memaddr_frame_end -= UPGT_MEMSIZE_RX + 1;
sc->sc_memaddr_rx_start = sc->sc_memaddr_frame_end + 1;
DPRINTF(sc, UPGT_DEBUG_FW, "memory address frame start=0x%08x\n",
sc->sc_memaddr_frame_start);
DPRINTF(sc, UPGT_DEBUG_FW, "memory address frame end=0x%08x\n",
sc->sc_memaddr_frame_end);
DPRINTF(sc, UPGT_DEBUG_FW, "memory address rx start=0x%08x\n",
sc->sc_memaddr_rx_start);
upgt_mem_init(sc);
/* Load the firmware. */
error = upgt_fw_load(sc);
if (error)
goto fail4;
/* Read the whole EEPROM content and parse it. */
error = upgt_eeprom_read(sc);
if (error)
goto fail4;
error = upgt_eeprom_parse(sc);
if (error)
goto fail4;
/* all works related with the device have done here. */
upgt_abort_xfers(sc);
ic->ic_softc = sc;
ic->ic_name = device_get_nameunit(dev);
ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */
ic->ic_opmode = IEEE80211_M_STA;
/* set device capabilities */
ic->ic_caps =
IEEE80211_C_STA /* station mode */
| IEEE80211_C_MONITOR /* monitor mode */
| IEEE80211_C_SHPREAMBLE /* short preamble supported */
| IEEE80211_C_SHSLOT /* short slot time supported */
| IEEE80211_C_BGSCAN /* capable of bg scanning */
| IEEE80211_C_WPA /* 802.11i */
;
bands = 0;
setbit(&bands, IEEE80211_MODE_11B);
setbit(&bands, IEEE80211_MODE_11G);
ieee80211_init_channels(ic, NULL, &bands);
ieee80211_ifattach(ic);
ic->ic_raw_xmit = upgt_raw_xmit;
ic->ic_scan_start = upgt_scan_start;
ic->ic_scan_end = upgt_scan_end;
ic->ic_set_channel = upgt_set_channel;
ic->ic_vap_create = upgt_vap_create;
ic->ic_vap_delete = upgt_vap_delete;
ic->ic_update_mcast = upgt_update_mcast;
ic->ic_transmit = upgt_transmit;
ic->ic_parent = upgt_parent;
ieee80211_radiotap_attach(ic,
&sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap),
UPGT_TX_RADIOTAP_PRESENT,
&sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap),
UPGT_RX_RADIOTAP_PRESENT);
upgt_sysctl_node(sc);
if (bootverbose)
ieee80211_announce(ic);
return (0);
fail4: upgt_free_rx(sc);
fail3: upgt_free_tx(sc);
fail2: usbd_transfer_unsetup(sc->sc_xfer, UPGT_N_XFERS);
fail1: mtx_destroy(&sc->sc_mtx);
return (error);
}
static void
upgt_txeof(struct usb_xfer *xfer, struct upgt_data *data)
{
if (data->m) {
/* XXX status? */
ieee80211_tx_complete(data->ni, data->m, 0);
data->m = NULL;
data->ni = NULL;
}
}
static void
upgt_get_stats(struct upgt_softc *sc)
{
struct upgt_data *data_cmd;
struct upgt_lmac_mem *mem;
struct upgt_lmac_stats *stats;
data_cmd = upgt_getbuf(sc);
if (data_cmd == NULL) {
device_printf(sc->sc_dev, "%s: out of buffers.\n", __func__);
return;
}
/*
* Transmit the URB containing the CMD data.
*/
memset(data_cmd->buf, 0, MCLBYTES);
mem = (struct upgt_lmac_mem *)data_cmd->buf;
mem->addr = htole32(sc->sc_memaddr_frame_start +
UPGT_MEMSIZE_FRAME_HEAD);
stats = (struct upgt_lmac_stats *)(mem + 1);
stats->header1.flags = 0;
stats->header1.type = UPGT_H1_TYPE_CTRL;
stats->header1.len = htole16(
sizeof(struct upgt_lmac_stats) - sizeof(struct upgt_lmac_header));
stats->header2.reqid = htole32(sc->sc_memaddr_frame_start);
stats->header2.type = htole16(UPGT_H2_TYPE_STATS);
stats->header2.flags = 0;
data_cmd->buflen = sizeof(*mem) + sizeof(*stats);
mem->chksum = upgt_chksum_le((uint32_t *)stats,
data_cmd->buflen - sizeof(*mem));
upgt_bulk_tx(sc, data_cmd);
}
static void
upgt_parent(struct ieee80211com *ic)
{
struct upgt_softc *sc = ic->ic_softc;
int startall = 0;
UPGT_LOCK(sc);
if (sc->sc_flags & UPGT_FLAG_DETACHED) {
UPGT_UNLOCK(sc);
return;
}
if (ic->ic_nrunning > 0) {
if (sc->sc_flags & UPGT_FLAG_INITDONE) {
if (ic->ic_allmulti > 0 || ic->ic_promisc > 0)
upgt_set_multi(sc);
} else {
upgt_init(sc);
startall = 1;
}
} else if (sc->sc_flags & UPGT_FLAG_INITDONE)
upgt_stop(sc);
UPGT_UNLOCK(sc);
if (startall)
ieee80211_start_all(ic);
}
static void
upgt_stop(struct upgt_softc *sc)
{
UPGT_ASSERT_LOCKED(sc);
if (sc->sc_flags & UPGT_FLAG_INITDONE)
upgt_set_macfilter(sc, IEEE80211_S_INIT);
upgt_abort_xfers_locked(sc);
/* device down */
sc->sc_tx_timer = 0;
sc->sc_flags &= ~UPGT_FLAG_INITDONE;
}
static void
upgt_set_led(struct upgt_softc *sc, int action)
{
struct upgt_data *data_cmd;
struct upgt_lmac_mem *mem;
struct upgt_lmac_led *led;
data_cmd = upgt_getbuf(sc);
if (data_cmd == NULL) {
device_printf(sc->sc_dev, "%s: out of buffers.\n", __func__);
return;
}
/*
* Transmit the URB containing the CMD data.
*/
memset(data_cmd->buf, 0, MCLBYTES);
mem = (struct upgt_lmac_mem *)data_cmd->buf;
mem->addr = htole32(sc->sc_memaddr_frame_start +
UPGT_MEMSIZE_FRAME_HEAD);
led = (struct upgt_lmac_led *)(mem + 1);
led->header1.flags = UPGT_H1_FLAGS_TX_NO_CALLBACK;
led->header1.type = UPGT_H1_TYPE_CTRL;
led->header1.len = htole16(
sizeof(struct upgt_lmac_led) -
sizeof(struct upgt_lmac_header));
led->header2.reqid = htole32(sc->sc_memaddr_frame_start);
led->header2.type = htole16(UPGT_H2_TYPE_LED);
led->header2.flags = 0;
switch (action) {
case UPGT_LED_OFF:
led->mode = htole16(UPGT_LED_MODE_SET);
led->action_fix = 0;
led->action_tmp = htole16(UPGT_LED_ACTION_OFF);
led->action_tmp_dur = 0;
break;
case UPGT_LED_ON:
led->mode = htole16(UPGT_LED_MODE_SET);
led->action_fix = 0;
led->action_tmp = htole16(UPGT_LED_ACTION_ON);
led->action_tmp_dur = 0;
break;
case UPGT_LED_BLINK:
if (sc->sc_state != IEEE80211_S_RUN) {
STAILQ_INSERT_TAIL(&sc->sc_tx_inactive, data_cmd, next);
return;
}
if (sc->sc_led_blink) {
/* previous blink was not finished */
STAILQ_INSERT_TAIL(&sc->sc_tx_inactive, data_cmd, next);
return;
}
led->mode = htole16(UPGT_LED_MODE_SET);
led->action_fix = htole16(UPGT_LED_ACTION_OFF);
led->action_tmp = htole16(UPGT_LED_ACTION_ON);
led->action_tmp_dur = htole16(UPGT_LED_ACTION_TMP_DUR);
/* lock blink */
sc->sc_led_blink = 1;
callout_reset(&sc->sc_led_ch, hz, upgt_set_led_blink, sc);
break;
default:
STAILQ_INSERT_TAIL(&sc->sc_tx_inactive, data_cmd, next);
return;
}
data_cmd->buflen = sizeof(*mem) + sizeof(*led);
mem->chksum = upgt_chksum_le((uint32_t *)led,
data_cmd->buflen - sizeof(*mem));
upgt_bulk_tx(sc, data_cmd);
}
static void
upgt_set_led_blink(void *arg)
{
struct upgt_softc *sc = arg;
/* blink finished, we are ready for a next one */
sc->sc_led_blink = 0;
}
static void
upgt_init(struct upgt_softc *sc)
{
UPGT_ASSERT_LOCKED(sc);
if (sc->sc_flags & UPGT_FLAG_INITDONE)
upgt_stop(sc);
usbd_transfer_start(sc->sc_xfer[UPGT_BULK_RX]);
(void)upgt_set_macfilter(sc, IEEE80211_S_SCAN);
sc->sc_flags |= UPGT_FLAG_INITDONE;
callout_reset(&sc->sc_watchdog_ch, hz, upgt_watchdog, sc);
}
static int
upgt_set_macfilter(struct upgt_softc *sc, uint8_t state)
{
struct ieee80211com *ic = &sc->sc_ic;
struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
struct ieee80211_node *ni;
struct upgt_data *data_cmd;
struct upgt_lmac_mem *mem;
struct upgt_lmac_filter *filter;
UPGT_ASSERT_LOCKED(sc);
data_cmd = upgt_getbuf(sc);
if (data_cmd == NULL) {
device_printf(sc->sc_dev, "out of TX buffers.\n");
return (ENOBUFS);
}
/*
* Transmit the URB containing the CMD data.
*/
memset(data_cmd->buf, 0, MCLBYTES);
mem = (struct upgt_lmac_mem *)data_cmd->buf;
mem->addr = htole32(sc->sc_memaddr_frame_start +
UPGT_MEMSIZE_FRAME_HEAD);
filter = (struct upgt_lmac_filter *)(mem + 1);
filter->header1.flags = UPGT_H1_FLAGS_TX_NO_CALLBACK;
filter->header1.type = UPGT_H1_TYPE_CTRL;
filter->header1.len = htole16(
sizeof(struct upgt_lmac_filter) -
sizeof(struct upgt_lmac_header));
filter->header2.reqid = htole32(sc->sc_memaddr_frame_start);
filter->header2.type = htole16(UPGT_H2_TYPE_MACFILTER);
filter->header2.flags = 0;
switch (state) {
case IEEE80211_S_INIT:
DPRINTF(sc, UPGT_DEBUG_STATE, "%s: set MAC filter to INIT\n",
__func__);
filter->type = htole16(UPGT_FILTER_TYPE_RESET);
break;
case IEEE80211_S_SCAN:
DPRINTF(sc, UPGT_DEBUG_STATE,
"set MAC filter to SCAN (bssid %s)\n",
ether_sprintf(ieee80211broadcastaddr));
filter->type = htole16(UPGT_FILTER_TYPE_NONE);
IEEE80211_ADDR_COPY(filter->dst,
vap ? vap->iv_myaddr : ic->ic_macaddr);
IEEE80211_ADDR_COPY(filter->src, ieee80211broadcastaddr);
filter->unknown1 = htole16(UPGT_FILTER_UNKNOWN1);
filter->rxaddr = htole32(sc->sc_memaddr_rx_start);
filter->unknown2 = htole16(UPGT_FILTER_UNKNOWN2);
filter->rxhw = htole32(sc->sc_eeprom_hwrx);
filter->unknown3 = htole16(UPGT_FILTER_UNKNOWN3);
break;
case IEEE80211_S_RUN:
ni = ieee80211_ref_node(vap->iv_bss);
/* XXX monitor mode isn't tested yet. */
if (vap->iv_opmode == IEEE80211_M_MONITOR) {
filter->type = htole16(UPGT_FILTER_TYPE_MONITOR);
IEEE80211_ADDR_COPY(filter->dst,
vap ? vap->iv_myaddr : ic->ic_macaddr);
IEEE80211_ADDR_COPY(filter->src, ni->ni_bssid);
filter->unknown1 = htole16(UPGT_FILTER_MONITOR_UNKNOWN1);
filter->rxaddr = htole32(sc->sc_memaddr_rx_start);
filter->unknown2 = htole16(UPGT_FILTER_MONITOR_UNKNOWN2);
filter->rxhw = htole32(sc->sc_eeprom_hwrx);
filter->unknown3 = htole16(UPGT_FILTER_MONITOR_UNKNOWN3);
} else {
DPRINTF(sc, UPGT_DEBUG_STATE,
"set MAC filter to RUN (bssid %s)\n",
ether_sprintf(ni->ni_bssid));
filter->type = htole16(UPGT_FILTER_TYPE_STA);
IEEE80211_ADDR_COPY(filter->dst,
vap ? vap->iv_myaddr : ic->ic_macaddr);
IEEE80211_ADDR_COPY(filter->src, ni->ni_bssid);
filter->unknown1 = htole16(UPGT_FILTER_UNKNOWN1);
filter->rxaddr = htole32(sc->sc_memaddr_rx_start);
filter->unknown2 = htole16(UPGT_FILTER_UNKNOWN2);
filter->rxhw = htole32(sc->sc_eeprom_hwrx);
filter->unknown3 = htole16(UPGT_FILTER_UNKNOWN3);
}
ieee80211_free_node(ni);
break;
default:
device_printf(sc->sc_dev,
"MAC filter does not know that state\n");
break;
}
data_cmd->buflen = sizeof(*mem) + sizeof(*filter);
mem->chksum = upgt_chksum_le((uint32_t *)filter,
data_cmd->buflen - sizeof(*mem));
upgt_bulk_tx(sc, data_cmd);
return (0);
}
static void
upgt_setup_rates(struct ieee80211vap *vap, struct ieee80211com *ic)
{
struct upgt_softc *sc = ic->ic_softc;
const struct ieee80211_txparam *tp;
/*
* 0x01 = OFMD6 0x10 = DS1
* 0x04 = OFDM9 0x11 = DS2
* 0x06 = OFDM12 0x12 = DS5
* 0x07 = OFDM18 0x13 = DS11
* 0x08 = OFDM24
* 0x09 = OFDM36
* 0x0a = OFDM48
* 0x0b = OFDM54
*/
const uint8_t rateset_auto_11b[] =
{ 0x13, 0x13, 0x12, 0x11, 0x11, 0x10, 0x10, 0x10 };
const uint8_t rateset_auto_11g[] =
{ 0x0b, 0x0a, 0x09, 0x08, 0x07, 0x06, 0x04, 0x01 };
const uint8_t rateset_fix_11bg[] =
{ 0x10, 0x11, 0x12, 0x13, 0x01, 0x04, 0x06, 0x07,
0x08, 0x09, 0x0a, 0x0b };
tp = &vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)];
/* XXX */
if (tp->ucastrate == IEEE80211_FIXED_RATE_NONE) {
/*
* Automatic rate control is done by the device.
* We just pass the rateset from which the device
* will pickup a rate.
*/
if (ic->ic_curmode == IEEE80211_MODE_11B)
memcpy(sc->sc_cur_rateset, rateset_auto_11b,
sizeof(sc->sc_cur_rateset));
if (ic->ic_curmode == IEEE80211_MODE_11G ||
ic->ic_curmode == IEEE80211_MODE_AUTO)
memcpy(sc->sc_cur_rateset, rateset_auto_11g,
sizeof(sc->sc_cur_rateset));
} else {
/* set a fixed rate */
memset(sc->sc_cur_rateset, rateset_fix_11bg[tp->ucastrate],
sizeof(sc->sc_cur_rateset));
}
}
static void
upgt_set_multi(void *arg)
{
/* XXX don't know how to set a device. Lack of docs. */
}
static int
upgt_transmit(struct ieee80211com *ic, struct mbuf *m)
{
struct upgt_softc *sc = ic->ic_softc;
int error;
UPGT_LOCK(sc);
if ((sc->sc_flags & UPGT_FLAG_INITDONE) == 0) {
UPGT_UNLOCK(sc);
return (ENXIO);
}
error = mbufq_enqueue(&sc->sc_snd, m);
if (error) {
UPGT_UNLOCK(sc);
return (error);
}
upgt_start(sc);
UPGT_UNLOCK(sc);
return (0);
}
static void
upgt_start(struct upgt_softc *sc)
{
struct upgt_data *data_tx;
struct ieee80211_node *ni;
struct mbuf *m;
UPGT_ASSERT_LOCKED(sc);
if ((sc->sc_flags & UPGT_FLAG_INITDONE) == 0)
return;
while ((m = mbufq_dequeue(&sc->sc_snd)) != NULL) {
data_tx = upgt_gettxbuf(sc);
if (data_tx == NULL) {
mbufq_prepend(&sc->sc_snd, m);
break;
}
ni = (struct ieee80211_node *)m->m_pkthdr.rcvif;
m->m_pkthdr.rcvif = NULL;
if (upgt_tx_start(sc, m, ni, data_tx) != 0) {
if_inc_counter(ni->ni_vap->iv_ifp,
IFCOUNTER_OERRORS, 1);
STAILQ_INSERT_HEAD(&sc->sc_tx_inactive, data_tx, next);
UPGT_STAT_INC(sc, st_tx_inactive);
ieee80211_free_node(ni);
continue;
}
sc->sc_tx_timer = 5;
}
}
static int
upgt_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
const struct ieee80211_bpf_params *params)
{
struct ieee80211com *ic = ni->ni_ic;
struct upgt_softc *sc = ic->ic_softc;
struct upgt_data *data_tx = NULL;
UPGT_LOCK(sc);
/* prevent management frames from being sent if we're not ready */
if (!(sc->sc_flags & UPGT_FLAG_INITDONE)) {
m_freem(m);
ieee80211_free_node(ni);
UPGT_UNLOCK(sc);
return ENETDOWN;
}
data_tx = upgt_gettxbuf(sc);
if (data_tx == NULL) {
ieee80211_free_node(ni);
m_freem(m);
UPGT_UNLOCK(sc);
return (ENOBUFS);
}
if (upgt_tx_start(sc, m, ni, data_tx) != 0) {
STAILQ_INSERT_HEAD(&sc->sc_tx_inactive, data_tx, next);
UPGT_STAT_INC(sc, st_tx_inactive);
ieee80211_free_node(ni);
UPGT_UNLOCK(sc);
return (EIO);
}
UPGT_UNLOCK(sc);
sc->sc_tx_timer = 5;
return (0);
}
static void
upgt_watchdog(void *arg)
{
struct upgt_softc *sc = arg;
struct ieee80211com *ic = &sc->sc_ic;
if (sc->sc_tx_timer > 0) {
if (--sc->sc_tx_timer == 0) {
device_printf(sc->sc_dev, "watchdog timeout\n");
/* upgt_init(sc); XXX needs a process context ? */
counter_u64_add(ic->ic_oerrors, 1);
return;
}
callout_reset(&sc->sc_watchdog_ch, hz, upgt_watchdog, sc);
}
}
static uint32_t
upgt_mem_alloc(struct upgt_softc *sc)
{
int i;
for (i = 0; i < sc->sc_memory.pages; i++) {
if (sc->sc_memory.page[i].used == 0) {
sc->sc_memory.page[i].used = 1;
return (sc->sc_memory.page[i].addr);
}
}
return (0);
}
static void
upgt_scan_start(struct ieee80211com *ic)
{
/* do nothing. */
}
static void
upgt_scan_end(struct ieee80211com *ic)
{
/* do nothing. */
}
static void
upgt_set_channel(struct ieee80211com *ic)
{
struct upgt_softc *sc = ic->ic_softc;
UPGT_LOCK(sc);
upgt_set_chan(sc, ic->ic_curchan);
UPGT_UNLOCK(sc);
}
static void
upgt_set_chan(struct upgt_softc *sc, struct ieee80211_channel *c)
{
struct ieee80211com *ic = &sc->sc_ic;
struct upgt_data *data_cmd;
struct upgt_lmac_mem *mem;
struct upgt_lmac_channel *chan;
int channel;
UPGT_ASSERT_LOCKED(sc);
channel = ieee80211_chan2ieee(ic, c);
if (channel == 0 || channel == IEEE80211_CHAN_ANY) {
/* XXX should NEVER happen */
device_printf(sc->sc_dev,
"%s: invalid channel %x\n", __func__, channel);
return;
}
DPRINTF(sc, UPGT_DEBUG_STATE, "%s: channel %d\n", __func__, channel);
data_cmd = upgt_getbuf(sc);
if (data_cmd == NULL) {
device_printf(sc->sc_dev, "%s: out of buffers.\n", __func__);
return;
}
/*
* Transmit the URB containing the CMD data.
*/
memset(data_cmd->buf, 0, MCLBYTES);
mem = (struct upgt_lmac_mem *)data_cmd->buf;
mem->addr = htole32(sc->sc_memaddr_frame_start +
UPGT_MEMSIZE_FRAME_HEAD);
chan = (struct upgt_lmac_channel *)(mem + 1);
chan->header1.flags = UPGT_H1_FLAGS_TX_NO_CALLBACK;
chan->header1.type = UPGT_H1_TYPE_CTRL;
chan->header1.len = htole16(
sizeof(struct upgt_lmac_channel) - sizeof(struct upgt_lmac_header));
chan->header2.reqid = htole32(sc->sc_memaddr_frame_start);
chan->header2.type = htole16(UPGT_H2_TYPE_CHANNEL);
chan->header2.flags = 0;
chan->unknown1 = htole16(UPGT_CHANNEL_UNKNOWN1);
chan->unknown2 = htole16(UPGT_CHANNEL_UNKNOWN2);
chan->freq6 = sc->sc_eeprom_freq6[channel];
chan->settings = sc->sc_eeprom_freq6_settings;
chan->unknown3 = UPGT_CHANNEL_UNKNOWN3;
memcpy(chan->freq3_1, &sc->sc_eeprom_freq3[channel].data,
sizeof(chan->freq3_1));
memcpy(chan->freq4, &sc->sc_eeprom_freq4[channel],
sizeof(sc->sc_eeprom_freq4[channel]));
memcpy(chan->freq3_2, &sc->sc_eeprom_freq3[channel].data,
sizeof(chan->freq3_2));
data_cmd->buflen = sizeof(*mem) + sizeof(*chan);
mem->chksum = upgt_chksum_le((uint32_t *)chan,
data_cmd->buflen - sizeof(*mem));
upgt_bulk_tx(sc, data_cmd);
}
static struct ieee80211vap *
upgt_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit,
enum ieee80211_opmode opmode, int flags,
const uint8_t bssid[IEEE80211_ADDR_LEN],
const uint8_t mac[IEEE80211_ADDR_LEN])
{
struct upgt_vap *uvp;
struct ieee80211vap *vap;
if (!TAILQ_EMPTY(&ic->ic_vaps)) /* only one at a time */
return NULL;
uvp = (struct upgt_vap *) malloc(sizeof(struct upgt_vap),
M_80211_VAP, M_NOWAIT | M_ZERO);
if (uvp == NULL)
return NULL;
vap = &uvp->vap;
/* enable s/w bmiss handling for sta mode */
if (ieee80211_vap_setup(ic, vap, name, unit, opmode,
flags | IEEE80211_CLONE_NOBEACONS, bssid) != 0) {
/* out of memory */
free(uvp, M_80211_VAP);
return (NULL);
}
/* override state transition machine */
uvp->newstate = vap->iv_newstate;
vap->iv_newstate = upgt_newstate;
/* setup device rates */
upgt_setup_rates(vap, ic);
/* complete setup */
ieee80211_vap_attach(vap, ieee80211_media_change,
ieee80211_media_status, mac);
ic->ic_opmode = opmode;
return vap;
}
static int
upgt_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
{
struct upgt_vap *uvp = UPGT_VAP(vap);
struct ieee80211com *ic = vap->iv_ic;
struct upgt_softc *sc = ic->ic_softc;
/* do it in a process context */
sc->sc_state = nstate;
IEEE80211_UNLOCK(ic);
UPGT_LOCK(sc);
callout_stop(&sc->sc_led_ch);
callout_stop(&sc->sc_watchdog_ch);
switch (nstate) {
case IEEE80211_S_INIT:
/* do not accept any frames if the device is down */
(void)upgt_set_macfilter(sc, sc->sc_state);
upgt_set_led(sc, UPGT_LED_OFF);
break;
case IEEE80211_S_SCAN:
upgt_set_chan(sc, ic->ic_curchan);
break;
case IEEE80211_S_AUTH:
upgt_set_chan(sc, ic->ic_curchan);
break;
case IEEE80211_S_ASSOC:
break;
case IEEE80211_S_RUN:
upgt_set_macfilter(sc, sc->sc_state);
upgt_set_led(sc, UPGT_LED_ON);
break;
default:
break;
}
UPGT_UNLOCK(sc);
IEEE80211_LOCK(ic);
return (uvp->newstate(vap, nstate, arg));
}
static void
upgt_vap_delete(struct ieee80211vap *vap)
{
struct upgt_vap *uvp = UPGT_VAP(vap);
ieee80211_vap_detach(vap);
free(uvp, M_80211_VAP);
}
static void
upgt_update_mcast(struct ieee80211com *ic)
{
struct upgt_softc *sc = ic->ic_softc;
upgt_set_multi(sc);
}
static int
upgt_eeprom_parse(struct upgt_softc *sc)
{
struct ieee80211com *ic = &sc->sc_ic;
struct upgt_eeprom_header *eeprom_header;
struct upgt_eeprom_option *eeprom_option;
uint16_t option_len;
uint16_t option_type;
uint16_t preamble_len;
int option_end = 0;
/* calculate eeprom options start offset */
eeprom_header = (struct upgt_eeprom_header *)sc->sc_eeprom;
preamble_len = le16toh(eeprom_header->preamble_len);
eeprom_option = (struct upgt_eeprom_option *)(sc->sc_eeprom +
(sizeof(struct upgt_eeprom_header) + preamble_len));
while (!option_end) {
/* sanity check */
if (eeprom_option >= (struct upgt_eeprom_option *)
(sc->sc_eeprom + UPGT_EEPROM_SIZE)) {
return (EINVAL);
}
/* the eeprom option length is stored in words */
option_len =
(le16toh(eeprom_option->len) - 1) * sizeof(uint16_t);
option_type =
le16toh(eeprom_option->type);
/* sanity check */
if (option_len == 0 || option_len >= UPGT_EEPROM_SIZE)
return (EINVAL);
switch (option_type) {
case UPGT_EEPROM_TYPE_NAME:
DPRINTF(sc, UPGT_DEBUG_FW,
"EEPROM name len=%d\n", option_len);
break;
case UPGT_EEPROM_TYPE_SERIAL:
DPRINTF(sc, UPGT_DEBUG_FW,
"EEPROM serial len=%d\n", option_len);
break;
case UPGT_EEPROM_TYPE_MAC:
DPRINTF(sc, UPGT_DEBUG_FW,
"EEPROM mac len=%d\n", option_len);
IEEE80211_ADDR_COPY(ic->ic_macaddr,
eeprom_option->data);
break;
case UPGT_EEPROM_TYPE_HWRX:
DPRINTF(sc, UPGT_DEBUG_FW,
"EEPROM hwrx len=%d\n", option_len);
upgt_eeprom_parse_hwrx(sc, eeprom_option->data);
break;
case UPGT_EEPROM_TYPE_CHIP:
DPRINTF(sc, UPGT_DEBUG_FW,
"EEPROM chip len=%d\n", option_len);
break;
case UPGT_EEPROM_TYPE_FREQ3:
DPRINTF(sc, UPGT_DEBUG_FW,
"EEPROM freq3 len=%d\n", option_len);
upgt_eeprom_parse_freq3(sc, eeprom_option->data,
option_len);
break;
case UPGT_EEPROM_TYPE_FREQ4:
DPRINTF(sc, UPGT_DEBUG_FW,
"EEPROM freq4 len=%d\n", option_len);
upgt_eeprom_parse_freq4(sc, eeprom_option->data,
option_len);
break;
case UPGT_EEPROM_TYPE_FREQ5:
DPRINTF(sc, UPGT_DEBUG_FW,
"EEPROM freq5 len=%d\n", option_len);
break;
case UPGT_EEPROM_TYPE_FREQ6:
DPRINTF(sc, UPGT_DEBUG_FW,
"EEPROM freq6 len=%d\n", option_len);
upgt_eeprom_parse_freq6(sc, eeprom_option->data,
option_len);
break;
case UPGT_EEPROM_TYPE_END:
DPRINTF(sc, UPGT_DEBUG_FW,
"EEPROM end len=%d\n", option_len);
option_end = 1;
break;
case UPGT_EEPROM_TYPE_OFF:
DPRINTF(sc, UPGT_DEBUG_FW,
"%s: EEPROM off without end option\n", __func__);
return (EIO);
default:
DPRINTF(sc, UPGT_DEBUG_FW,
"EEPROM unknown type 0x%04x len=%d\n",
option_type, option_len);
break;
}
/* jump to next EEPROM option */
eeprom_option = (struct upgt_eeprom_option *)
(eeprom_option->data + option_len);
}
return (0);
}
static void
upgt_eeprom_parse_freq3(struct upgt_softc *sc, uint8_t *data, int len)
{
struct upgt_eeprom_freq3_header *freq3_header;
struct upgt_lmac_freq3 *freq3;
int i;
int elements;
int flags;
unsigned channel;
freq3_header = (struct upgt_eeprom_freq3_header *)data;
freq3 = (struct upgt_lmac_freq3 *)(freq3_header + 1);
flags = freq3_header->flags;
elements = freq3_header->elements;
DPRINTF(sc, UPGT_DEBUG_FW, "flags=0x%02x elements=%d\n",
flags, elements);
if (elements >= (int)(UPGT_EEPROM_SIZE / sizeof(freq3[0])))
return;
for (i = 0; i < elements; i++) {
channel = ieee80211_mhz2ieee(le16toh(freq3[i].freq), 0);
if (channel >= IEEE80211_CHAN_MAX)
continue;
sc->sc_eeprom_freq3[channel] = freq3[i];
DPRINTF(sc, UPGT_DEBUG_FW, "frequence=%d, channel=%d\n",
le16toh(sc->sc_eeprom_freq3[channel].freq), channel);
}
}
void
upgt_eeprom_parse_freq4(struct upgt_softc *sc, uint8_t *data, int len)
{
struct upgt_eeprom_freq4_header *freq4_header;
struct upgt_eeprom_freq4_1 *freq4_1;
struct upgt_eeprom_freq4_2 *freq4_2;
int i;
int j;
int elements;
int settings;
int flags;
unsigned channel;
freq4_header = (struct upgt_eeprom_freq4_header *)data;
freq4_1 = (struct upgt_eeprom_freq4_1 *)(freq4_header + 1);
flags = freq4_header->flags;
elements = freq4_header->elements;
settings = freq4_header->settings;
/* we need this value later */
sc->sc_eeprom_freq6_settings = freq4_header->settings;
DPRINTF(sc, UPGT_DEBUG_FW, "flags=0x%02x elements=%d settings=%d\n",
flags, elements, settings);
if (elements >= (int)(UPGT_EEPROM_SIZE / sizeof(freq4_1[0])))
return;
for (i = 0; i < elements; i++) {
channel = ieee80211_mhz2ieee(le16toh(freq4_1[i].freq), 0);
if (channel >= IEEE80211_CHAN_MAX)
continue;
freq4_2 = (struct upgt_eeprom_freq4_2 *)freq4_1[i].data;
for (j = 0; j < settings; j++) {
sc->sc_eeprom_freq4[channel][j].cmd = freq4_2[j];
sc->sc_eeprom_freq4[channel][j].pad = 0;
}
DPRINTF(sc, UPGT_DEBUG_FW, "frequence=%d, channel=%d\n",
le16toh(freq4_1[i].freq), channel);
}
}
void
upgt_eeprom_parse_freq6(struct upgt_softc *sc, uint8_t *data, int len)
{
struct upgt_lmac_freq6 *freq6;
int i;
int elements;
unsigned channel;
freq6 = (struct upgt_lmac_freq6 *)data;
elements = len / sizeof(struct upgt_lmac_freq6);
DPRINTF(sc, UPGT_DEBUG_FW, "elements=%d\n", elements);
if (elements >= (int)(UPGT_EEPROM_SIZE / sizeof(freq6[0])))
return;
for (i = 0; i < elements; i++) {
channel = ieee80211_mhz2ieee(le16toh(freq6[i].freq), 0);
if (channel >= IEEE80211_CHAN_MAX)
continue;
sc->sc_eeprom_freq6[channel] = freq6[i];
DPRINTF(sc, UPGT_DEBUG_FW, "frequence=%d, channel=%d\n",
le16toh(sc->sc_eeprom_freq6[channel].freq), channel);
}
}
static void
upgt_eeprom_parse_hwrx(struct upgt_softc *sc, uint8_t *data)
{
struct upgt_eeprom_option_hwrx *option_hwrx;
option_hwrx = (struct upgt_eeprom_option_hwrx *)data;
sc->sc_eeprom_hwrx = option_hwrx->rxfilter - UPGT_EEPROM_RX_CONST;
DPRINTF(sc, UPGT_DEBUG_FW, "hwrx option value=0x%04x\n",
sc->sc_eeprom_hwrx);
}
static int
upgt_eeprom_read(struct upgt_softc *sc)
{
struct upgt_data *data_cmd;
struct upgt_lmac_mem *mem;
struct upgt_lmac_eeprom *eeprom;
int block, error, offset;
UPGT_LOCK(sc);
usb_pause_mtx(&sc->sc_mtx, 100);
offset = 0;
block = UPGT_EEPROM_BLOCK_SIZE;
while (offset < UPGT_EEPROM_SIZE) {
DPRINTF(sc, UPGT_DEBUG_FW,
"request EEPROM block (offset=%d, len=%d)\n", offset, block);
data_cmd = upgt_getbuf(sc);
if (data_cmd == NULL) {
UPGT_UNLOCK(sc);
return (ENOBUFS);
}
/*
* Transmit the URB containing the CMD data.
*/
memset(data_cmd->buf, 0, MCLBYTES);
mem = (struct upgt_lmac_mem *)data_cmd->buf;
mem->addr = htole32(sc->sc_memaddr_frame_start +
UPGT_MEMSIZE_FRAME_HEAD);
eeprom = (struct upgt_lmac_eeprom *)(mem + 1);
eeprom->header1.flags = 0;
eeprom->header1.type = UPGT_H1_TYPE_CTRL;
eeprom->header1.len = htole16((
sizeof(struct upgt_lmac_eeprom) -
sizeof(struct upgt_lmac_header)) + block);
eeprom->header2.reqid = htole32(sc->sc_memaddr_frame_start);
eeprom->header2.type = htole16(UPGT_H2_TYPE_EEPROM);
eeprom->header2.flags = 0;
eeprom->offset = htole16(offset);
eeprom->len = htole16(block);
data_cmd->buflen = sizeof(*mem) + sizeof(*eeprom) + block;
mem->chksum = upgt_chksum_le((uint32_t *)eeprom,
data_cmd->buflen - sizeof(*mem));
upgt_bulk_tx(sc, data_cmd);
error = mtx_sleep(sc, &sc->sc_mtx, 0, "eeprom_request", hz);
if (error != 0) {
device_printf(sc->sc_dev,
"timeout while waiting for EEPROM data\n");
UPGT_UNLOCK(sc);
return (EIO);
}
offset += block;
if (UPGT_EEPROM_SIZE - offset < block)
block = UPGT_EEPROM_SIZE - offset;
}
UPGT_UNLOCK(sc);
return (0);
}
/*
* When a rx data came in the function returns a mbuf and a rssi values.
*/
static struct mbuf *
upgt_rxeof(struct usb_xfer *xfer, struct upgt_data *data, int *rssi)
{
struct mbuf *m = NULL;
struct upgt_softc *sc = usbd_xfer_softc(xfer);
struct upgt_lmac_header *header;
struct upgt_lmac_eeprom *eeprom;
uint8_t h1_type;
uint16_t h2_type;
int actlen, sumlen;
usbd_xfer_status(xfer, &actlen, &sumlen, NULL, NULL);
UPGT_ASSERT_LOCKED(sc);
if (actlen < 1)
return (NULL);
/* Check only at the very beginning. */
if (!(sc->sc_flags & UPGT_FLAG_FWLOADED) &&
(memcmp(data->buf, "OK", 2) == 0)) {
sc->sc_flags |= UPGT_FLAG_FWLOADED;
wakeup_one(sc);
return (NULL);
}
if (actlen < (int)UPGT_RX_MINSZ)
return (NULL);
/*
* Check what type of frame came in.
*/
header = (struct upgt_lmac_header *)(data->buf + 4);
h1_type = header->header1.type;
h2_type = le16toh(header->header2.type);
if (h1_type == UPGT_H1_TYPE_CTRL && h2_type == UPGT_H2_TYPE_EEPROM) {
eeprom = (struct upgt_lmac_eeprom *)(data->buf + 4);
uint16_t eeprom_offset = le16toh(eeprom->offset);
uint16_t eeprom_len = le16toh(eeprom->len);
DPRINTF(sc, UPGT_DEBUG_FW,
"received EEPROM block (offset=%d, len=%d)\n",
eeprom_offset, eeprom_len);
memcpy(sc->sc_eeprom + eeprom_offset,
data->buf + sizeof(struct upgt_lmac_eeprom) + 4,
eeprom_len);
/* EEPROM data has arrived in time, wakeup. */
wakeup(sc);
} else if (h1_type == UPGT_H1_TYPE_CTRL &&
h2_type == UPGT_H2_TYPE_TX_DONE) {
DPRINTF(sc, UPGT_DEBUG_XMIT, "%s: received 802.11 TX done\n",
__func__);
upgt_tx_done(sc, data->buf + 4);
} else if (h1_type == UPGT_H1_TYPE_RX_DATA ||
h1_type == UPGT_H1_TYPE_RX_DATA_MGMT) {
DPRINTF(sc, UPGT_DEBUG_RECV, "%s: received 802.11 RX data\n",
__func__);
m = upgt_rx(sc, data->buf + 4, le16toh(header->header1.len),
rssi);
} else if (h1_type == UPGT_H1_TYPE_CTRL &&
h2_type == UPGT_H2_TYPE_STATS) {
DPRINTF(sc, UPGT_DEBUG_STAT, "%s: received statistic data\n",
__func__);
/* TODO: what could we do with the statistic data? */
} else {
/* ignore unknown frame types */
DPRINTF(sc, UPGT_DEBUG_INTR,
"received unknown frame type 0x%02x\n",
header->header1.type);
}
return (m);
}
/*
* The firmware awaits a checksum for each frame we send to it.
* The algorithm used therefor is uncommon but somehow similar to CRC32.
*/
static uint32_t
upgt_chksum_le(const uint32_t *buf, size_t size)
{
size_t i;
uint32_t crc = 0;
for (i = 0; i < size; i += sizeof(uint32_t)) {
crc = htole32(crc ^ *buf++);
crc = htole32((crc >> 5) ^ (crc << 3));
}
return (crc);
}
static struct mbuf *
upgt_rx(struct upgt_softc *sc, uint8_t *data, int pkglen, int *rssi)
{
struct ieee80211com *ic = &sc->sc_ic;
struct upgt_lmac_rx_desc *rxdesc;
struct mbuf *m;
/*
* don't pass packets to the ieee80211 framework if the driver isn't
* RUNNING.
*/
if (!(sc->sc_flags & UPGT_FLAG_INITDONE))
return (NULL);
/* access RX packet descriptor */
rxdesc = (struct upgt_lmac_rx_desc *)data;
/* create mbuf which is suitable for strict alignment archs */
KASSERT((pkglen + ETHER_ALIGN) < MCLBYTES,
("A current mbuf storage is small (%d)", pkglen + ETHER_ALIGN));
m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
if (m == NULL) {
device_printf(sc->sc_dev, "could not create RX mbuf\n");
return (NULL);
}
m_adj(m, ETHER_ALIGN);
memcpy(mtod(m, char *), rxdesc->data, pkglen);
/* trim FCS */
m->m_len = m->m_pkthdr.len = pkglen - IEEE80211_CRC_LEN;
if (ieee80211_radiotap_active(ic)) {
struct upgt_rx_radiotap_header *tap = &sc->sc_rxtap;
tap->wr_flags = 0;
tap->wr_rate = upgt_rx_rate(sc, rxdesc->rate);
tap->wr_antsignal = rxdesc->rssi;
}
DPRINTF(sc, UPGT_DEBUG_RX_PROC, "%s: RX done\n", __func__);
*rssi = rxdesc->rssi;
return (m);
}
static uint8_t
upgt_rx_rate(struct upgt_softc *sc, const int rate)
{
struct ieee80211com *ic = &sc->sc_ic;
static const uint8_t cck_upgt2rate[4] = { 2, 4, 11, 22 };
static const uint8_t ofdm_upgt2rate[12] =
{ 2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108 };
if (ic->ic_curmode == IEEE80211_MODE_11B &&
!(rate < 0 || rate > 3))
return cck_upgt2rate[rate & 0xf];
if (ic->ic_curmode == IEEE80211_MODE_11G &&
!(rate < 0 || rate > 11))
return ofdm_upgt2rate[rate & 0xf];
return (0);
}
static void
upgt_tx_done(struct upgt_softc *sc, uint8_t *data)
{
struct upgt_lmac_tx_done_desc *desc;
int i, freed = 0;
UPGT_ASSERT_LOCKED(sc);
desc = (struct upgt_lmac_tx_done_desc *)data;
for (i = 0; i < UPGT_TX_MAXCOUNT; i++) {
struct upgt_data *data_tx = &sc->sc_tx_data[i];
if (data_tx->addr == le32toh(desc->header2.reqid)) {
upgt_mem_free(sc, data_tx->addr);
data_tx->ni = NULL;
data_tx->addr = 0;
data_tx->m = NULL;
DPRINTF(sc, UPGT_DEBUG_TX_PROC,
"TX done: memaddr=0x%08x, status=0x%04x, rssi=%d, ",
le32toh(desc->header2.reqid),
le16toh(desc->status), le16toh(desc->rssi));
DPRINTF(sc, UPGT_DEBUG_TX_PROC, "seq=%d\n",
le16toh(desc->seq));
freed++;
}
}
if (freed != 0) {
UPGT_UNLOCK(sc);
sc->sc_tx_timer = 0;
upgt_start(sc);
UPGT_LOCK(sc);
}
}
static void
upgt_mem_free(struct upgt_softc *sc, uint32_t addr)
{
int i;
for (i = 0; i < sc->sc_memory.pages; i++) {
if (sc->sc_memory.page[i].addr == addr) {
sc->sc_memory.page[i].used = 0;
return;
}
}
device_printf(sc->sc_dev,
"could not free memory address 0x%08x\n", addr);
}
static int
upgt_fw_load(struct upgt_softc *sc)
{
const struct firmware *fw;
struct upgt_data *data_cmd;
struct upgt_fw_x2_header *x2;
char start_fwload_cmd[] = { 0x3c, 0x0d };
int error = 0;
size_t offset;
int bsize;
int n;
uint32_t crc32;
fw = firmware_get(upgt_fwname);
if (fw == NULL) {
device_printf(sc->sc_dev, "could not read microcode %s\n",
upgt_fwname);
return (EIO);
}
UPGT_LOCK(sc);
/* send firmware start load command */
data_cmd = upgt_getbuf(sc);
if (data_cmd == NULL) {
error = ENOBUFS;
goto fail;
}
data_cmd->buflen = sizeof(start_fwload_cmd);
memcpy(data_cmd->buf, start_fwload_cmd, data_cmd->buflen);
upgt_bulk_tx(sc, data_cmd);
/* send X2 header */
data_cmd = upgt_getbuf(sc);
if (data_cmd == NULL) {
error = ENOBUFS;
goto fail;
}
data_cmd->buflen = sizeof(struct upgt_fw_x2_header);
x2 = (struct upgt_fw_x2_header *)data_cmd->buf;
memcpy(x2->signature, UPGT_X2_SIGNATURE, UPGT_X2_SIGNATURE_SIZE);
x2->startaddr = htole32(UPGT_MEMADDR_FIRMWARE_START);
x2->len = htole32(fw->datasize);
x2->crc = upgt_crc32_le((uint8_t *)data_cmd->buf +
UPGT_X2_SIGNATURE_SIZE,
sizeof(struct upgt_fw_x2_header) - UPGT_X2_SIGNATURE_SIZE -
sizeof(uint32_t));
upgt_bulk_tx(sc, data_cmd);
/* download firmware */
for (offset = 0; offset < fw->datasize; offset += bsize) {
if (fw->datasize - offset > UPGT_FW_BLOCK_SIZE)
bsize = UPGT_FW_BLOCK_SIZE;
else
bsize = fw->datasize - offset;
data_cmd = upgt_getbuf(sc);
if (data_cmd == NULL) {
error = ENOBUFS;
goto fail;
}
n = upgt_fw_copy((const uint8_t *)fw->data + offset,
data_cmd->buf, bsize);
data_cmd->buflen = bsize;
upgt_bulk_tx(sc, data_cmd);
DPRINTF(sc, UPGT_DEBUG_FW, "FW offset=%d, read=%d, sent=%d\n",
offset, n, bsize);
bsize = n;
}
DPRINTF(sc, UPGT_DEBUG_FW, "%s: firmware downloaded\n", __func__);
/* load firmware */
data_cmd = upgt_getbuf(sc);
if (data_cmd == NULL) {
error = ENOBUFS;
goto fail;
}
crc32 = upgt_crc32_le(fw->data, fw->datasize);
*((uint32_t *)(data_cmd->buf) ) = crc32;
*((uint8_t *)(data_cmd->buf) + 4) = 'g';
*((uint8_t *)(data_cmd->buf) + 5) = '\r';
data_cmd->buflen = 6;
upgt_bulk_tx(sc, data_cmd);
/* waiting 'OK' response. */
usbd_transfer_start(sc->sc_xfer[UPGT_BULK_RX]);
error = mtx_sleep(sc, &sc->sc_mtx, 0, "upgtfw", 2 * hz);
if (error != 0) {
device_printf(sc->sc_dev, "firmware load failed\n");
error = EIO;
}
DPRINTF(sc, UPGT_DEBUG_FW, "%s: firmware loaded\n", __func__);
fail:
UPGT_UNLOCK(sc);
firmware_put(fw, FIRMWARE_UNLOAD);
return (error);
}
static uint32_t
upgt_crc32_le(const void *buf, size_t size)
{
uint32_t crc;
crc = ether_crc32_le(buf, size);
/* apply final XOR value as common for CRC-32 */
crc = htole32(crc ^ 0xffffffffU);
return (crc);
}
/*
* While copying the version 2 firmware, we need to replace two characters:
*
* 0x7e -> 0x7d 0x5e
* 0x7d -> 0x7d 0x5d
*/
static int
upgt_fw_copy(const uint8_t *src, char *dst, int size)
{
int i, j;
for (i = 0, j = 0; i < size && j < size; i++) {
switch (src[i]) {
case 0x7e:
dst[j] = 0x7d;
j++;
dst[j] = 0x5e;
j++;
break;
case 0x7d:
dst[j] = 0x7d;
j++;
dst[j] = 0x5d;
j++;
break;
default:
dst[j] = src[i];
j++;
break;
}
}
return (i);
}
static int
upgt_mem_init(struct upgt_softc *sc)
{
int i;
for (i = 0; i < UPGT_MEMORY_MAX_PAGES; i++) {
sc->sc_memory.page[i].used = 0;
if (i == 0) {
/*
* The first memory page is always reserved for
* command data.
*/
sc->sc_memory.page[i].addr =
sc->sc_memaddr_frame_start + MCLBYTES;
} else {
sc->sc_memory.page[i].addr =
sc->sc_memory.page[i - 1].addr + MCLBYTES;
}
if (sc->sc_memory.page[i].addr + MCLBYTES >=
sc->sc_memaddr_frame_end)
break;
DPRINTF(sc, UPGT_DEBUG_FW, "memory address page %d=0x%08x\n",
i, sc->sc_memory.page[i].addr);
}
sc->sc_memory.pages = i;
DPRINTF(sc, UPGT_DEBUG_FW, "memory pages=%d\n", sc->sc_memory.pages);
return (0);
}
static int
upgt_fw_verify(struct upgt_softc *sc)
{
const struct firmware *fw;
const struct upgt_fw_bra_option *bra_opt;
const struct upgt_fw_bra_descr *descr;
const uint8_t *p;
const uint32_t *uc;
uint32_t bra_option_type, bra_option_len;
size_t offset;
int bra_end = 0;
int error = 0;
fw = firmware_get(upgt_fwname);
if (fw == NULL) {
device_printf(sc->sc_dev, "could not read microcode %s\n",
upgt_fwname);
return EIO;
}
/*
* Seek to beginning of Boot Record Area (BRA).
*/
for (offset = 0; offset < fw->datasize; offset += sizeof(*uc)) {
uc = (const uint32_t *)((const uint8_t *)fw->data + offset);
if (*uc == 0)
break;
}
for (; offset < fw->datasize; offset += sizeof(*uc)) {
uc = (const uint32_t *)((const uint8_t *)fw->data + offset);
if (*uc != 0)
break;
}
if (offset == fw->datasize) {
device_printf(sc->sc_dev,
"firmware Boot Record Area not found\n");
error = EIO;
goto fail;
}
DPRINTF(sc, UPGT_DEBUG_FW,
"firmware Boot Record Area found at offset %d\n", offset);
/*
* Parse Boot Record Area (BRA) options.
*/
while (offset < fw->datasize && bra_end == 0) {
/* get current BRA option */
p = (const uint8_t *)fw->data + offset;
bra_opt = (const struct upgt_fw_bra_option *)p;
bra_option_type = le32toh(bra_opt->type);
bra_option_len = le32toh(bra_opt->len) * sizeof(*uc);
switch (bra_option_type) {
case UPGT_BRA_TYPE_FW:
DPRINTF(sc, UPGT_DEBUG_FW, "UPGT_BRA_TYPE_FW len=%d\n",
bra_option_len);
if (bra_option_len != UPGT_BRA_FWTYPE_SIZE) {
device_printf(sc->sc_dev,
"wrong UPGT_BRA_TYPE_FW len\n");
error = EIO;
goto fail;
}
if (memcmp(UPGT_BRA_FWTYPE_LM86, bra_opt->data,
bra_option_len) == 0) {
sc->sc_fw_type = UPGT_FWTYPE_LM86;
break;
}
if (memcmp(UPGT_BRA_FWTYPE_LM87, bra_opt->data,
bra_option_len) == 0) {
sc->sc_fw_type = UPGT_FWTYPE_LM87;
break;
}
device_printf(sc->sc_dev,
"unsupported firmware type\n");
error = EIO;
goto fail;
case UPGT_BRA_TYPE_VERSION:
DPRINTF(sc, UPGT_DEBUG_FW,
"UPGT_BRA_TYPE_VERSION len=%d\n", bra_option_len);
break;
case UPGT_BRA_TYPE_DEPIF:
DPRINTF(sc, UPGT_DEBUG_FW,
"UPGT_BRA_TYPE_DEPIF len=%d\n", bra_option_len);
break;
case UPGT_BRA_TYPE_EXPIF:
DPRINTF(sc, UPGT_DEBUG_FW,
"UPGT_BRA_TYPE_EXPIF len=%d\n", bra_option_len);
break;
case UPGT_BRA_TYPE_DESCR:
DPRINTF(sc, UPGT_DEBUG_FW,
"UPGT_BRA_TYPE_DESCR len=%d\n", bra_option_len);
descr = (const struct upgt_fw_bra_descr *)bra_opt->data;
sc->sc_memaddr_frame_start =
le32toh(descr->memaddr_space_start);
sc->sc_memaddr_frame_end =
le32toh(descr->memaddr_space_end);
DPRINTF(sc, UPGT_DEBUG_FW,
"memory address space start=0x%08x\n",
sc->sc_memaddr_frame_start);
DPRINTF(sc, UPGT_DEBUG_FW,
"memory address space end=0x%08x\n",
sc->sc_memaddr_frame_end);
break;
case UPGT_BRA_TYPE_END:
DPRINTF(sc, UPGT_DEBUG_FW, "UPGT_BRA_TYPE_END len=%d\n",
bra_option_len);
bra_end = 1;
break;
default:
DPRINTF(sc, UPGT_DEBUG_FW, "unknown BRA option len=%d\n",
bra_option_len);
error = EIO;
goto fail;
}
/* jump to next BRA option */
offset += sizeof(struct upgt_fw_bra_option) + bra_option_len;
}
DPRINTF(sc, UPGT_DEBUG_FW, "%s: firmware verified", __func__);
fail:
firmware_put(fw, FIRMWARE_UNLOAD);
return (error);
}
static void
upgt_bulk_tx(struct upgt_softc *sc, struct upgt_data *data)
{
UPGT_ASSERT_LOCKED(sc);
STAILQ_INSERT_TAIL(&sc->sc_tx_pending, data, next);
UPGT_STAT_INC(sc, st_tx_pending);
usbd_transfer_start(sc->sc_xfer[UPGT_BULK_TX]);
}
static int
upgt_device_reset(struct upgt_softc *sc)
{
struct upgt_data *data;
char init_cmd[] = { 0x7e, 0x7e, 0x7e, 0x7e };
UPGT_LOCK(sc);
data = upgt_getbuf(sc);
if (data == NULL) {
UPGT_UNLOCK(sc);
return (ENOBUFS);
}
memcpy(data->buf, init_cmd, sizeof(init_cmd));
data->buflen = sizeof(init_cmd);
upgt_bulk_tx(sc, data);
usb_pause_mtx(&sc->sc_mtx, 100);
UPGT_UNLOCK(sc);
DPRINTF(sc, UPGT_DEBUG_FW, "%s: device initialized\n", __func__);
return (0);
}
static int
upgt_alloc_tx(struct upgt_softc *sc)
{
int i;
STAILQ_INIT(&sc->sc_tx_active);
STAILQ_INIT(&sc->sc_tx_inactive);
STAILQ_INIT(&sc->sc_tx_pending);
for (i = 0; i < UPGT_TX_MAXCOUNT; i++) {
struct upgt_data *data = &sc->sc_tx_data[i];
data->buf = ((uint8_t *)sc->sc_tx_dma_buf) + (i * MCLBYTES);
STAILQ_INSERT_TAIL(&sc->sc_tx_inactive, data, next);
UPGT_STAT_INC(sc, st_tx_inactive);
}
return (0);
}
static int
upgt_alloc_rx(struct upgt_softc *sc)
{
int i;
STAILQ_INIT(&sc->sc_rx_active);
STAILQ_INIT(&sc->sc_rx_inactive);
for (i = 0; i < UPGT_RX_MAXCOUNT; i++) {
struct upgt_data *data = &sc->sc_rx_data[i];
data->buf = ((uint8_t *)sc->sc_rx_dma_buf) + (i * MCLBYTES);
STAILQ_INSERT_TAIL(&sc->sc_rx_inactive, data, next);
}
return (0);
}
static int
upgt_detach(device_t dev)
{
struct upgt_softc *sc = device_get_softc(dev);
struct ieee80211com *ic = &sc->sc_ic;
unsigned int x;
/*
* Prevent further allocations from RX/TX/CMD
* data lists and ioctls
*/
UPGT_LOCK(sc);
sc->sc_flags |= UPGT_FLAG_DETACHED;
STAILQ_INIT(&sc->sc_tx_active);
STAILQ_INIT(&sc->sc_tx_inactive);
STAILQ_INIT(&sc->sc_tx_pending);
STAILQ_INIT(&sc->sc_rx_active);
STAILQ_INIT(&sc->sc_rx_inactive);
upgt_stop(sc);
UPGT_UNLOCK(sc);
callout_drain(&sc->sc_led_ch);
callout_drain(&sc->sc_watchdog_ch);
/* drain USB transfers */
for (x = 0; x != UPGT_N_XFERS; x++)
usbd_transfer_drain(sc->sc_xfer[x]);
/* free data buffers */
UPGT_LOCK(sc);
upgt_free_rx(sc);
upgt_free_tx(sc);
UPGT_UNLOCK(sc);
/* free USB transfers and some data buffers */
usbd_transfer_unsetup(sc->sc_xfer, UPGT_N_XFERS);
ieee80211_ifdetach(ic);
mbufq_drain(&sc->sc_snd);
mtx_destroy(&sc->sc_mtx);
return (0);
}
static void
upgt_free_rx(struct upgt_softc *sc)
{
int i;
for (i = 0; i < UPGT_RX_MAXCOUNT; i++) {
struct upgt_data *data = &sc->sc_rx_data[i];
data->buf = NULL;
data->ni = NULL;
}
}
static void
upgt_free_tx(struct upgt_softc *sc)
{
int i;
for (i = 0; i < UPGT_TX_MAXCOUNT; i++) {
struct upgt_data *data = &sc->sc_tx_data[i];
if (data->ni != NULL)
ieee80211_free_node(data->ni);
data->buf = NULL;
data->ni = NULL;
}
}
static void
upgt_abort_xfers_locked(struct upgt_softc *sc)
{
int i;
UPGT_ASSERT_LOCKED(sc);
/* abort any pending transfers */
for (i = 0; i < UPGT_N_XFERS; i++)
usbd_transfer_stop(sc->sc_xfer[i]);
}
static void
upgt_abort_xfers(struct upgt_softc *sc)
{
UPGT_LOCK(sc);
upgt_abort_xfers_locked(sc);
UPGT_UNLOCK(sc);
}
#define UPGT_SYSCTL_STAT_ADD32(c, h, n, p, d) \
SYSCTL_ADD_UINT(c, h, OID_AUTO, n, CTLFLAG_RD, p, 0, d)
static void
upgt_sysctl_node(struct upgt_softc *sc)
{
struct sysctl_ctx_list *ctx;
struct sysctl_oid_list *child;
struct sysctl_oid *tree;
struct upgt_stat *stats;
stats = &sc->sc_stat;
ctx = device_get_sysctl_ctx(sc->sc_dev);
child = SYSCTL_CHILDREN(device_get_sysctl_tree(sc->sc_dev));
tree = SYSCTL_ADD_NODE(ctx, child, OID_AUTO, "stats", CTLFLAG_RD,
NULL, "UPGT statistics");
child = SYSCTL_CHILDREN(tree);
UPGT_SYSCTL_STAT_ADD32(ctx, child, "tx_active",
&stats->st_tx_active, "Active numbers in TX queue");
UPGT_SYSCTL_STAT_ADD32(ctx, child, "tx_inactive",
&stats->st_tx_inactive, "Inactive numbers in TX queue");
UPGT_SYSCTL_STAT_ADD32(ctx, child, "tx_pending",
&stats->st_tx_pending, "Pending numbers in TX queue");
}
#undef UPGT_SYSCTL_STAT_ADD32
static struct upgt_data *
_upgt_getbuf(struct upgt_softc *sc)
{
struct upgt_data *bf;
bf = STAILQ_FIRST(&sc->sc_tx_inactive);
if (bf != NULL) {
STAILQ_REMOVE_HEAD(&sc->sc_tx_inactive, next);
UPGT_STAT_DEC(sc, st_tx_inactive);
} else
bf = NULL;
if (bf == NULL)
DPRINTF(sc, UPGT_DEBUG_XMIT, "%s: %s\n", __func__,
"out of xmit buffers");
return (bf);
}
static struct upgt_data *
upgt_getbuf(struct upgt_softc *sc)
{
struct upgt_data *bf;
UPGT_ASSERT_LOCKED(sc);
bf = _upgt_getbuf(sc);
if (bf == NULL)
DPRINTF(sc, UPGT_DEBUG_XMIT, "%s: stop queue\n", __func__);
return (bf);
}
static struct upgt_data *
upgt_gettxbuf(struct upgt_softc *sc)
{
struct upgt_data *bf;
UPGT_ASSERT_LOCKED(sc);
bf = upgt_getbuf(sc);
if (bf == NULL)
return (NULL);
bf->addr = upgt_mem_alloc(sc);
if (bf->addr == 0) {
DPRINTF(sc, UPGT_DEBUG_XMIT, "%s: no free prism memory!\n",
__func__);
STAILQ_INSERT_HEAD(&sc->sc_tx_inactive, bf, next);
UPGT_STAT_INC(sc, st_tx_inactive);
return (NULL);
}
return (bf);
}
static int
upgt_tx_start(struct upgt_softc *sc, struct mbuf *m, struct ieee80211_node *ni,
struct upgt_data *data)
{
struct ieee80211vap *vap = ni->ni_vap;
int error = 0, len;
struct ieee80211_frame *wh;
struct ieee80211_key *k;
struct upgt_lmac_mem *mem;
struct upgt_lmac_tx_desc *txdesc;
UPGT_ASSERT_LOCKED(sc);
upgt_set_led(sc, UPGT_LED_BLINK);
/*
* Software crypto.
*/
wh = mtod(m, struct ieee80211_frame *);
if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) {
k = ieee80211_crypto_encap(ni, m);
if (k == NULL) {
device_printf(sc->sc_dev,
"ieee80211_crypto_encap returns NULL.\n");
error = EIO;
goto done;
}
/* in case packet header moved, reset pointer */
wh = mtod(m, struct ieee80211_frame *);
}
/* Transmit the URB containing the TX data. */
memset(data->buf, 0, MCLBYTES);
mem = (struct upgt_lmac_mem *)data->buf;
mem->addr = htole32(data->addr);
txdesc = (struct upgt_lmac_tx_desc *)(mem + 1);
if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) ==
IEEE80211_FC0_TYPE_MGT) {
/* mgmt frames */
txdesc->header1.flags = UPGT_H1_FLAGS_TX_MGMT;
/* always send mgmt frames at lowest rate (DS1) */
memset(txdesc->rates, 0x10, sizeof(txdesc->rates));
} else {
/* data frames */
txdesc->header1.flags = UPGT_H1_FLAGS_TX_DATA;
memcpy(txdesc->rates, sc->sc_cur_rateset, sizeof(txdesc->rates));
}
txdesc->header1.type = UPGT_H1_TYPE_TX_DATA;
txdesc->header1.len = htole16(m->m_pkthdr.len);
txdesc->header2.reqid = htole32(data->addr);
txdesc->header2.type = htole16(UPGT_H2_TYPE_TX_ACK_YES);
txdesc->header2.flags = htole16(UPGT_H2_FLAGS_TX_ACK_YES);
txdesc->type = htole32(UPGT_TX_DESC_TYPE_DATA);
txdesc->pad3[0] = UPGT_TX_DESC_PAD3_SIZE;
if (ieee80211_radiotap_active_vap(vap)) {
struct upgt_tx_radiotap_header *tap = &sc->sc_txtap;
tap->wt_flags = 0;
tap->wt_rate = 0; /* XXX where to get from? */
ieee80211_radiotap_tx(vap, m);
}
/* copy frame below our TX descriptor header */
m_copydata(m, 0, m->m_pkthdr.len,
data->buf + (sizeof(*mem) + sizeof(*txdesc)));
/* calculate frame size */
len = sizeof(*mem) + sizeof(*txdesc) + m->m_pkthdr.len;
/* we need to align the frame to a 4 byte boundary */
len = (len + 3) & ~3;
/* calculate frame checksum */
mem->chksum = upgt_chksum_le((uint32_t *)txdesc, len - sizeof(*mem));
data->ni = ni;
data->m = m;
data->buflen = len;
DPRINTF(sc, UPGT_DEBUG_XMIT, "%s: TX start data sending (%d bytes)\n",
__func__, len);
KASSERT(len <= MCLBYTES, ("mbuf is small for saving data"));
upgt_bulk_tx(sc, data);
done:
/*
* If we don't regulary read the device statistics, the RX queue
* will stall. It's strange, but it works, so we keep reading
* the statistics here. *shrug*
*/
if (!(vap->iv_ifp->if_get_counter(vap->iv_ifp, IFCOUNTER_OPACKETS) %
UPGT_TX_STAT_INTERVAL))
upgt_get_stats(sc);
return (error);
}
static void
upgt_bulk_rx_callback(struct usb_xfer *xfer, usb_error_t error)
{
struct upgt_softc *sc = usbd_xfer_softc(xfer);
struct ieee80211com *ic = &sc->sc_ic;
struct ieee80211_frame *wh;
struct ieee80211_node *ni;
struct mbuf *m = NULL;
struct upgt_data *data;
int8_t nf;
int rssi = -1;
UPGT_ASSERT_LOCKED(sc);
switch (USB_GET_STATE(xfer)) {
case USB_ST_TRANSFERRED:
data = STAILQ_FIRST(&sc->sc_rx_active);
if (data == NULL)
goto setup;
STAILQ_REMOVE_HEAD(&sc->sc_rx_active, next);
m = upgt_rxeof(xfer, data, &rssi);
STAILQ_INSERT_TAIL(&sc->sc_rx_inactive, data, next);
/* FALLTHROUGH */
case USB_ST_SETUP:
setup:
data = STAILQ_FIRST(&sc->sc_rx_inactive);
if (data == NULL)
return;
STAILQ_REMOVE_HEAD(&sc->sc_rx_inactive, next);
STAILQ_INSERT_TAIL(&sc->sc_rx_active, data, next);
usbd_xfer_set_frame_data(xfer, 0, data->buf, MCLBYTES);
usbd_transfer_submit(xfer);
/*
* To avoid LOR we should unlock our private mutex here to call
* ieee80211_input() because here is at the end of a USB
* callback and safe to unlock.
*/
UPGT_UNLOCK(sc);
if (m != NULL) {
wh = mtod(m, struct ieee80211_frame *);
ni = ieee80211_find_rxnode(ic,
(struct ieee80211_frame_min *)wh);
nf = -95; /* XXX */
if (ni != NULL) {
(void) ieee80211_input(ni, m, rssi, nf);
/* node is no longer needed */
ieee80211_free_node(ni);
} else
(void) ieee80211_input_all(ic, m, rssi, nf);
m = NULL;
}
UPGT_LOCK(sc);
upgt_start(sc);
break;
default:
/* needs it to the inactive queue due to a error. */
data = STAILQ_FIRST(&sc->sc_rx_active);
if (data != NULL) {
STAILQ_REMOVE_HEAD(&sc->sc_rx_active, next);
STAILQ_INSERT_TAIL(&sc->sc_rx_inactive, data, next);
}
if (error != USB_ERR_CANCELLED) {
usbd_xfer_set_stall(xfer);
counter_u64_add(ic->ic_ierrors, 1);
goto setup;
}
break;
}
}
static void
upgt_bulk_tx_callback(struct usb_xfer *xfer, usb_error_t error)
{
struct upgt_softc *sc = usbd_xfer_softc(xfer);
struct upgt_data *data;
UPGT_ASSERT_LOCKED(sc);
switch (USB_GET_STATE(xfer)) {
case USB_ST_TRANSFERRED:
data = STAILQ_FIRST(&sc->sc_tx_active);
if (data == NULL)
goto setup;
STAILQ_REMOVE_HEAD(&sc->sc_tx_active, next);
UPGT_STAT_DEC(sc, st_tx_active);
upgt_txeof(xfer, data);
STAILQ_INSERT_TAIL(&sc->sc_tx_inactive, data, next);
UPGT_STAT_INC(sc, st_tx_inactive);
/* FALLTHROUGH */
case USB_ST_SETUP:
setup:
data = STAILQ_FIRST(&sc->sc_tx_pending);
if (data == NULL) {
DPRINTF(sc, UPGT_DEBUG_XMIT, "%s: empty pending queue\n",
__func__);
return;
}
STAILQ_REMOVE_HEAD(&sc->sc_tx_pending, next);
UPGT_STAT_DEC(sc, st_tx_pending);
STAILQ_INSERT_TAIL(&sc->sc_tx_active, data, next);
UPGT_STAT_INC(sc, st_tx_active);
usbd_xfer_set_frame_data(xfer, 0, data->buf, data->buflen);
usbd_transfer_submit(xfer);
upgt_start(sc);
break;
default:
data = STAILQ_FIRST(&sc->sc_tx_active);
if (data == NULL)
goto setup;
if (data->ni != NULL) {
if_inc_counter(data->ni->ni_vap->iv_ifp,
IFCOUNTER_OERRORS, 1);
ieee80211_free_node(data->ni);
data->ni = NULL;
}
if (error != USB_ERR_CANCELLED) {
usbd_xfer_set_stall(xfer);
goto setup;
}
break;
}
}
static device_method_t upgt_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, upgt_match),
DEVMETHOD(device_attach, upgt_attach),
DEVMETHOD(device_detach, upgt_detach),
DEVMETHOD_END
};
static driver_t upgt_driver = {
.name = "upgt",
.methods = upgt_methods,
.size = sizeof(struct upgt_softc)
};
static devclass_t upgt_devclass;
DRIVER_MODULE(if_upgt, uhub, upgt_driver, upgt_devclass, NULL, 0);
MODULE_VERSION(if_upgt, 1);
MODULE_DEPEND(if_upgt, usb, 1, 1, 1);
MODULE_DEPEND(if_upgt, wlan, 1, 1, 1);
MODULE_DEPEND(if_upgt, upgtfw_fw, 1, 1, 1);
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