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freebsd-skq/sys/dev/bwi/bwimac.c
imp 6d18ae1832 Update a few XXX comments 
Submitted by:	ddk ddk ddkprog at yahoo dot com
2009-05-11 17:13:52 +00:00

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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/bwimac.c,v 1.13 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/linker.h>
#include <sys/firmware.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_amrr.h>
#include <net80211/ieee80211_phy.h>
#include <machine/bus.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>
#include <dev/bwi/bwiphy.h>
struct bwi_retry_lim {
uint16_t shretry;
uint16_t shretry_fb;
uint16_t lgretry;
uint16_t lgretry_fb;
};
static int bwi_mac_test(struct bwi_mac *);
static int bwi_mac_get_property(struct bwi_mac *);
static void bwi_mac_set_retry_lim(struct bwi_mac *,
const struct bwi_retry_lim *);
static void bwi_mac_set_ackrates(struct bwi_mac *,
const struct ieee80211_rate_table *rt,
const struct ieee80211_rateset *);
static int bwi_mac_gpio_init(struct bwi_mac *);
static int bwi_mac_gpio_fini(struct bwi_mac *);
static void bwi_mac_opmode_init(struct bwi_mac *);
static void bwi_mac_hostflags_init(struct bwi_mac *);
static void bwi_mac_bss_param_init(struct bwi_mac *);
static int bwi_mac_fw_alloc(struct bwi_mac *);
static void bwi_mac_fw_free(struct bwi_mac *);
static int bwi_mac_fw_load(struct bwi_mac *);
static int bwi_mac_fw_init(struct bwi_mac *);
static int bwi_mac_fw_load_iv(struct bwi_mac *, const struct firmware *);
static void bwi_mac_setup_tpctl(struct bwi_mac *);
static void bwi_mac_adjust_tpctl(struct bwi_mac *, int, int);
static void bwi_mac_lock(struct bwi_mac *);
static void bwi_mac_unlock(struct bwi_mac *);
static const uint8_t bwi_sup_macrev[] = { 2, 4, 5, 6, 7, 9, 10 };
void
bwi_tmplt_write_4(struct bwi_mac *mac, uint32_t ofs, uint32_t val)
{
struct bwi_softc *sc = mac->mac_sc;
if (mac->mac_flags & BWI_MAC_F_BSWAP)
val = bswap32(val);
CSR_WRITE_4(sc, BWI_MAC_TMPLT_CTRL, ofs);
CSR_WRITE_4(sc, BWI_MAC_TMPLT_DATA, val);
}
void
bwi_hostflags_write(struct bwi_mac *mac, uint64_t flags)
{
uint64_t val;
val = flags & 0xffff;
MOBJ_WRITE_2(mac, BWI_COMM_MOBJ, BWI_COMM_MOBJ_HFLAGS_LO, val);
val = (flags >> 16) & 0xffff;
MOBJ_WRITE_2(mac, BWI_COMM_MOBJ, BWI_COMM_MOBJ_HFLAGS_MI, val);
/* HI has unclear meaning, so leave it as it is */
}
uint64_t
bwi_hostflags_read(struct bwi_mac *mac)
{
uint64_t flags, val;
/* HI has unclear meaning, so don't touch it */
flags = 0;
val = MOBJ_READ_2(mac, BWI_COMM_MOBJ, BWI_COMM_MOBJ_HFLAGS_MI);
flags |= val << 16;
val = MOBJ_READ_2(mac, BWI_COMM_MOBJ, BWI_COMM_MOBJ_HFLAGS_LO);
flags |= val;
return flags;
}
uint16_t
bwi_memobj_read_2(struct bwi_mac *mac, uint16_t obj_id, uint16_t ofs0)
{
struct bwi_softc *sc = mac->mac_sc;
uint32_t data_reg;
int ofs;
data_reg = BWI_MOBJ_DATA;
ofs = ofs0 / 4;
if (ofs0 % 4 != 0)
data_reg = BWI_MOBJ_DATA_UNALIGN;
CSR_WRITE_4(sc, BWI_MOBJ_CTRL, BWI_MOBJ_CTRL_VAL(obj_id, ofs));
return CSR_READ_2(sc, data_reg);
}
uint32_t
bwi_memobj_read_4(struct bwi_mac *mac, uint16_t obj_id, uint16_t ofs0)
{
struct bwi_softc *sc = mac->mac_sc;
int ofs;
ofs = ofs0 / 4;
if (ofs0 % 4 != 0) {
uint32_t ret;
CSR_WRITE_4(sc, BWI_MOBJ_CTRL, BWI_MOBJ_CTRL_VAL(obj_id, ofs));
ret = CSR_READ_2(sc, BWI_MOBJ_DATA_UNALIGN);
ret <<= 16;
CSR_WRITE_4(sc, BWI_MOBJ_CTRL,
BWI_MOBJ_CTRL_VAL(obj_id, ofs + 1));
ret |= CSR_READ_2(sc, BWI_MOBJ_DATA);
return ret;
} else {
CSR_WRITE_4(sc, BWI_MOBJ_CTRL, BWI_MOBJ_CTRL_VAL(obj_id, ofs));
return CSR_READ_4(sc, BWI_MOBJ_DATA);
}
}
void
bwi_memobj_write_2(struct bwi_mac *mac, uint16_t obj_id, uint16_t ofs0,
uint16_t v)
{
struct bwi_softc *sc = mac->mac_sc;
uint32_t data_reg;
int ofs;
data_reg = BWI_MOBJ_DATA;
ofs = ofs0 / 4;
if (ofs0 % 4 != 0)
data_reg = BWI_MOBJ_DATA_UNALIGN;
CSR_WRITE_4(sc, BWI_MOBJ_CTRL, BWI_MOBJ_CTRL_VAL(obj_id, ofs));
CSR_WRITE_2(sc, data_reg, v);
}
void
bwi_memobj_write_4(struct bwi_mac *mac, uint16_t obj_id, uint16_t ofs0,
uint32_t v)
{
struct bwi_softc *sc = mac->mac_sc;
int ofs;
ofs = ofs0 / 4;
if (ofs0 % 4 != 0) {
CSR_WRITE_4(sc, BWI_MOBJ_CTRL, BWI_MOBJ_CTRL_VAL(obj_id, ofs));
CSR_WRITE_2(sc, BWI_MOBJ_DATA_UNALIGN, v >> 16);
CSR_WRITE_4(sc, BWI_MOBJ_CTRL,
BWI_MOBJ_CTRL_VAL(obj_id, ofs + 1));
CSR_WRITE_2(sc, BWI_MOBJ_DATA, v & 0xffff);
} else {
CSR_WRITE_4(sc, BWI_MOBJ_CTRL, BWI_MOBJ_CTRL_VAL(obj_id, ofs));
CSR_WRITE_4(sc, BWI_MOBJ_DATA, v);
}
}
int
bwi_mac_lateattach(struct bwi_mac *mac)
{
int error;
if (mac->mac_rev >= 5)
CSR_READ_4(mac->mac_sc, BWI_STATE_HI); /* dummy read */
bwi_mac_reset(mac, 1);
error = bwi_phy_attach(mac);
if (error)
return error;
error = bwi_rf_attach(mac);
if (error)
return error;
/* Link 11B/G PHY, unlink 11A PHY */
if (mac->mac_phy.phy_mode == IEEE80211_MODE_11A)
bwi_mac_reset(mac, 0);
else
bwi_mac_reset(mac, 1);
error = bwi_mac_test(mac);
if (error)
return error;
error = bwi_mac_get_property(mac);
if (error)
return error;
error = bwi_rf_map_txpower(mac);
if (error)
return error;
bwi_rf_off(mac);
CSR_WRITE_2(mac->mac_sc, BWI_BBP_ATTEN, BWI_BBP_ATTEN_MAGIC);
bwi_regwin_disable(mac->mac_sc, &mac->mac_regwin, 0);
return 0;
}
int
bwi_mac_init(struct bwi_mac *mac)
{
struct bwi_softc *sc = mac->mac_sc;
int error, i;
/* Clear MAC/PHY/RF states */
bwi_mac_setup_tpctl(mac);
bwi_rf_clear_state(&mac->mac_rf);
bwi_phy_clear_state(&mac->mac_phy);
/* Enable MAC and linked it to PHY */
if (!bwi_regwin_is_enabled(sc, &mac->mac_regwin))
bwi_mac_reset(mac, 1);
/* Initialize backplane */
error = bwi_bus_init(sc, mac);
if (error)
return error;
/* do timeout fixup */
if (sc->sc_bus_regwin.rw_rev <= 5 &&
sc->sc_bus_regwin.rw_type != BWI_REGWIN_T_BUSPCIE) {
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));
}
/* Calibrate PHY */
error = bwi_phy_calibrate(mac);
if (error) {
device_printf(sc->sc_dev, "PHY calibrate failed\n");
return error;
}
/* Prepare to initialize firmware */
CSR_WRITE_4(sc, BWI_MAC_STATUS,
BWI_MAC_STATUS_UCODE_JUMP0 |
BWI_MAC_STATUS_IHREN);
/*
* Load and initialize firmwares
*/
error = bwi_mac_fw_alloc(mac);
if (error)
return error;
error = bwi_mac_fw_load(mac);
if (error)
return error;
error = bwi_mac_gpio_init(mac);
if (error)
return error;
error = bwi_mac_fw_init(mac);
if (error)
return error;
/*
* Turn on RF
*/
bwi_rf_on(mac);
/* TODO: LED, hardware rf enabled is only related to LED setting */
/*
* Initialize PHY
*/
CSR_WRITE_2(sc, BWI_BBP_ATTEN, 0);
bwi_phy_init(mac);
/* TODO: interference mitigation */
/*
* Setup antenna mode
*/
bwi_rf_set_ant_mode(mac, mac->mac_rf.rf_ant_mode);
/*
* Initialize operation mode (RX configuration)
*/
bwi_mac_opmode_init(mac);
/* set up Beacon interval */
if (mac->mac_rev < 3) {
CSR_WRITE_2(sc, 0x60e, 0);
CSR_WRITE_2(sc, 0x610, 0x8000);
CSR_WRITE_2(sc, 0x604, 0);
CSR_WRITE_2(sc, 0x606, 0x200);
} else {
CSR_WRITE_4(sc, 0x188, 0x80000000);
CSR_WRITE_4(sc, 0x18c, 0x2000000);
}
/*
* Initialize TX/RX interrupts' mask
*/
CSR_WRITE_4(sc, BWI_MAC_INTR_STATUS, BWI_INTR_TIMER1);
for (i = 0; i < BWI_TXRX_NRING; ++i) {
uint32_t intrs;
if (BWI_TXRX_IS_RX(i))
intrs = BWI_TXRX_RX_INTRS;
else
intrs = BWI_TXRX_TX_INTRS;
CSR_WRITE_4(sc, BWI_TXRX_INTR_MASK(i), intrs);
}
/* allow the MAC to control the PHY clock (dynamic on/off) */
CSR_SETBITS_4(sc, BWI_STATE_LO, 0x100000);
/* Setup MAC power up delay */
CSR_WRITE_2(sc, BWI_MAC_POWERUP_DELAY, sc->sc_pwron_delay);
/* Set MAC regwin revision */
MOBJ_WRITE_2(mac, BWI_COMM_MOBJ, BWI_COMM_MOBJ_MACREV, mac->mac_rev);
/*
* Initialize host flags
*/
bwi_mac_hostflags_init(mac);
/*
* Initialize BSS parameters
*/
bwi_mac_bss_param_init(mac);
/*
* Initialize TX rings
*/
for (i = 0; i < BWI_TX_NRING; ++i) {
error = sc->sc_init_tx_ring(sc, i);
if (error) {
device_printf(sc->sc_dev,
"can't initialize %dth TX ring\n", i);
return error;
}
}
/*
* Initialize RX ring
*/
error = sc->sc_init_rx_ring(sc);
if (error) {
device_printf(sc->sc_dev, "can't initialize RX ring\n");
return error;
}
/*
* Initialize TX stats if the current MAC uses that
*/
if (mac->mac_flags & BWI_MAC_F_HAS_TXSTATS) {
error = sc->sc_init_txstats(sc);
if (error) {
device_printf(sc->sc_dev,
"can't initialize TX stats ring\n");
return error;
}
}
/* update PRETBTT */
CSR_WRITE_2(sc, 0x612, 0x50); /* Force Pre-TBTT to 80? */
MOBJ_WRITE_2(mac, BWI_COMM_MOBJ, 0x416, 0x50);
MOBJ_WRITE_2(mac, BWI_COMM_MOBJ, 0x414, 0x1f4);
mac->mac_flags |= BWI_MAC_F_INITED;
return 0;
}
void
bwi_mac_reset(struct bwi_mac *mac, int link_phy)
{
struct bwi_softc *sc = mac->mac_sc;
uint32_t flags, state_lo, status;
flags = BWI_STATE_LO_FLAG_PHYRST | BWI_STATE_LO_FLAG_PHYCLKEN;
if (link_phy)
flags |= BWI_STATE_LO_FLAG_PHYLNK;
bwi_regwin_enable(sc, &mac->mac_regwin, flags);
DELAY(2000);
state_lo = CSR_READ_4(sc, BWI_STATE_LO);
state_lo |= BWI_STATE_LO_GATED_CLOCK;
state_lo &= ~__SHIFTIN(BWI_STATE_LO_FLAG_PHYRST,
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(1000);
state_lo &= ~BWI_STATE_LO_GATED_CLOCK;
CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
/* Flush pending bus write */
CSR_READ_4(sc, BWI_STATE_LO);
DELAY(1000);
CSR_WRITE_2(sc, BWI_BBP_ATTEN, 0);
status = CSR_READ_4(sc, BWI_MAC_STATUS);
status |= BWI_MAC_STATUS_IHREN;
if (link_phy)
status |= BWI_MAC_STATUS_PHYLNK;
else
status &= ~BWI_MAC_STATUS_PHYLNK;
CSR_WRITE_4(sc, BWI_MAC_STATUS, status);
if (link_phy) {
DPRINTF(sc, BWI_DBG_MAC | BWI_DBG_ATTACH | BWI_DBG_INIT,
"%s\n", "PHY is linked");
mac->mac_phy.phy_flags |= BWI_PHY_F_LINKED;
} else {
DPRINTF(sc, BWI_DBG_MAC | BWI_DBG_ATTACH | BWI_DBG_INIT,
"%s\n", "PHY is unlinked");
mac->mac_phy.phy_flags &= ~BWI_PHY_F_LINKED;
}
}
void
bwi_mac_set_tpctl_11bg(struct bwi_mac *mac, const struct bwi_tpctl *new_tpctl)
{
struct bwi_rf *rf = &mac->mac_rf;
struct bwi_tpctl *tpctl = &mac->mac_tpctl;
if (new_tpctl != NULL) {
KASSERT(new_tpctl->bbp_atten <= BWI_BBP_ATTEN_MAX,
("bbp_atten %d", new_tpctl->bbp_atten));
KASSERT(new_tpctl->rf_atten <=
(rf->rf_rev < 6 ? BWI_RF_ATTEN_MAX0
: BWI_RF_ATTEN_MAX1),
("rf_atten %d", new_tpctl->rf_atten));
KASSERT(new_tpctl->tp_ctrl1 <= BWI_TPCTL1_MAX,
("tp_ctrl1 %d", new_tpctl->tp_ctrl1));
tpctl->bbp_atten = new_tpctl->bbp_atten;
tpctl->rf_atten = new_tpctl->rf_atten;
tpctl->tp_ctrl1 = new_tpctl->tp_ctrl1;
}
/* Set BBP attenuation */
bwi_phy_set_bbp_atten(mac, tpctl->bbp_atten);
/* Set RF attenuation */
RF_WRITE(mac, BWI_RFR_ATTEN, tpctl->rf_atten);
MOBJ_WRITE_2(mac, BWI_COMM_MOBJ, BWI_COMM_MOBJ_RF_ATTEN,
tpctl->rf_atten);
/* Set TX power */
if (rf->rf_type == BWI_RF_T_BCM2050) {
RF_FILT_SETBITS(mac, BWI_RFR_TXPWR, ~BWI_RFR_TXPWR1_MASK,
__SHIFTIN(tpctl->tp_ctrl1, BWI_RFR_TXPWR1_MASK));
}
/* Adjust RF Local Oscillator */
if (mac->mac_phy.phy_mode == IEEE80211_MODE_11G)
bwi_rf_lo_adjust(mac, tpctl);
}
static int
bwi_mac_test(struct bwi_mac *mac)
{
struct bwi_softc *sc = mac->mac_sc;
uint32_t orig_val, val;
#define TEST_VAL1 0xaa5555aa
#define TEST_VAL2 0x55aaaa55
/* Save it for later restoring */
orig_val = MOBJ_READ_4(mac, BWI_COMM_MOBJ, 0);
/* Test 1 */
MOBJ_WRITE_4(mac, BWI_COMM_MOBJ, 0, TEST_VAL1);
val = MOBJ_READ_4(mac, BWI_COMM_MOBJ, 0);
if (val != TEST_VAL1) {
device_printf(sc->sc_dev, "TEST1 failed\n");
return ENXIO;
}
/* Test 2 */
MOBJ_WRITE_4(mac, BWI_COMM_MOBJ, 0, TEST_VAL2);
val = MOBJ_READ_4(mac, BWI_COMM_MOBJ, 0);
if (val != TEST_VAL2) {
device_printf(sc->sc_dev, "TEST2 failed\n");
return ENXIO;
}
/* Restore to the original value */
MOBJ_WRITE_4(mac, BWI_COMM_MOBJ, 0, orig_val);
val = CSR_READ_4(sc, BWI_MAC_STATUS);
if ((val & ~BWI_MAC_STATUS_PHYLNK) != BWI_MAC_STATUS_IHREN) {
device_printf(sc->sc_dev, "%s failed, MAC status 0x%08x\n",
__func__, val);
return ENXIO;
}
val = CSR_READ_4(sc, BWI_MAC_INTR_STATUS);
if (val != 0) {
device_printf(sc->sc_dev, "%s failed, intr status %08x\n",
__func__, val);
return ENXIO;
}
#undef TEST_VAL2
#undef TEST_VAL1
return 0;
}
static void
bwi_mac_setup_tpctl(struct bwi_mac *mac)
{
struct bwi_softc *sc = mac->mac_sc;
struct bwi_rf *rf = &mac->mac_rf;
struct bwi_phy *phy = &mac->mac_phy;
struct bwi_tpctl *tpctl = &mac->mac_tpctl;
/* Calc BBP attenuation */
if (rf->rf_type == BWI_RF_T_BCM2050 && rf->rf_rev < 6)
tpctl->bbp_atten = 0;
else
tpctl->bbp_atten = 2;
/* Calc TX power CTRL1?? */
tpctl->tp_ctrl1 = 0;
if (rf->rf_type == BWI_RF_T_BCM2050) {
if (rf->rf_rev == 1)
tpctl->tp_ctrl1 = 3;
else if (rf->rf_rev < 6)
tpctl->tp_ctrl1 = 2;
else if (rf->rf_rev == 8)
tpctl->tp_ctrl1 = 1;
}
/* Empty TX power CTRL2?? */
tpctl->tp_ctrl2 = 0xffff;
/*
* Calc RF attenuation
*/
if (phy->phy_mode == IEEE80211_MODE_11A) {
tpctl->rf_atten = 0x60;
goto back;
}
if (BWI_IS_BRCM_BCM4309G(sc) && sc->sc_pci_revid < 0x51) {
tpctl->rf_atten = sc->sc_pci_revid < 0x43 ? 2 : 3;
goto back;
}
tpctl->rf_atten = 5;
if (rf->rf_type != BWI_RF_T_BCM2050) {
if (rf->rf_type == BWI_RF_T_BCM2053 && rf->rf_rev == 1)
tpctl->rf_atten = 6;
goto back;
}
/*
* NB: If we reaches here and the card is BRCM_BCM4309G,
* then the card's PCI revision must >= 0x51
*/
/* BCM2050 RF */
switch (rf->rf_rev) {
case 1:
if (phy->phy_mode == IEEE80211_MODE_11G) {
if (BWI_IS_BRCM_BCM4309G(sc) || BWI_IS_BRCM_BU4306(sc))
tpctl->rf_atten = 3;
else
tpctl->rf_atten = 1;
} else {
if (BWI_IS_BRCM_BCM4309G(sc))
tpctl->rf_atten = 7;
else
tpctl->rf_atten = 6;
}
break;
case 2:
if (phy->phy_mode == IEEE80211_MODE_11G) {
/*
* NOTE: Order of following conditions is critical
*/
if (BWI_IS_BRCM_BCM4309G(sc))
tpctl->rf_atten = 3;
else if (BWI_IS_BRCM_BU4306(sc))
tpctl->rf_atten = 5;
else if (sc->sc_bbp_id == BWI_BBPID_BCM4320)
tpctl->rf_atten = 4;
else
tpctl->rf_atten = 3;
} else {
tpctl->rf_atten = 6;
}
break;
case 4:
case 5:
tpctl->rf_atten = 1;
break;
case 8:
tpctl->rf_atten = 0x1a;
break;
}
back:
DPRINTF(sc, BWI_DBG_MAC | BWI_DBG_INIT | BWI_DBG_TXPOWER,
"bbp atten: %u, rf atten: %u, ctrl1: %u, ctrl2: %u\n",
tpctl->bbp_atten, tpctl->rf_atten,
tpctl->tp_ctrl1, tpctl->tp_ctrl2);
}
void
bwi_mac_dummy_xmit(struct bwi_mac *mac)
{
#define PACKET_LEN 5
static const uint32_t packet_11a[PACKET_LEN] =
{ 0x000201cc, 0x00d40000, 0x00000000, 0x01000000, 0x00000000 };
static const uint32_t packet_11bg[PACKET_LEN] =
{ 0x000b846e, 0x00d40000, 0x00000000, 0x01000000, 0x00000000 };
struct bwi_softc *sc = mac->mac_sc;
struct bwi_rf *rf = &mac->mac_rf;
const uint32_t *packet;
uint16_t val_50c;
int wait_max, i;
if (mac->mac_phy.phy_mode == IEEE80211_MODE_11A) {
wait_max = 30;
packet = packet_11a;
val_50c = 1;
} else {
wait_max = 250;
packet = packet_11bg;
val_50c = 0;
}
for (i = 0; i < PACKET_LEN; ++i)
TMPLT_WRITE_4(mac, i * 4, packet[i]);
CSR_READ_4(sc, BWI_MAC_STATUS); /* dummy read */
CSR_WRITE_2(sc, 0x568, 0);
CSR_WRITE_2(sc, 0x7c0, 0);
CSR_WRITE_2(sc, 0x50c, val_50c);
CSR_WRITE_2(sc, 0x508, 0);
CSR_WRITE_2(sc, 0x50a, 0);
CSR_WRITE_2(sc, 0x54c, 0);
CSR_WRITE_2(sc, 0x56a, 0x14);
CSR_WRITE_2(sc, 0x568, 0x826);
CSR_WRITE_2(sc, 0x500, 0);
CSR_WRITE_2(sc, 0x502, 0x30);
if (rf->rf_type == BWI_RF_T_BCM2050 && rf->rf_rev <= 5)
RF_WRITE(mac, 0x51, 0x17);
for (i = 0; i < wait_max; ++i) {
if (CSR_READ_2(sc, 0x50e) & 0x80)
break;
DELAY(10);
}
for (i = 0; i < 10; ++i) {
if (CSR_READ_2(sc, 0x50e) & 0x400)
break;
DELAY(10);
}
for (i = 0; i < 10; ++i) {
if ((CSR_READ_2(sc, 0x690) & 0x100) == 0)
break;
DELAY(10);
}
if (rf->rf_type == BWI_RF_T_BCM2050 && rf->rf_rev <= 5)
RF_WRITE(mac, 0x51, 0x37);
#undef PACKET_LEN
}
void
bwi_mac_init_tpctl_11bg(struct bwi_mac *mac)
{
struct bwi_softc *sc = mac->mac_sc;
struct bwi_phy *phy = &mac->mac_phy;
struct bwi_rf *rf = &mac->mac_rf;
struct bwi_tpctl tpctl_orig;
int restore_tpctl = 0;
KASSERT(phy->phy_mode != IEEE80211_MODE_11A,
("phy_mode %d", phy->phy_mode));
if (BWI_IS_BRCM_BU4306(sc))
return;
PHY_WRITE(mac, 0x28, 0x8018);
CSR_CLRBITS_2(sc, BWI_BBP_ATTEN, 0x20);
if (phy->phy_mode == IEEE80211_MODE_11G) {
if ((phy->phy_flags & BWI_PHY_F_LINKED) == 0)
return;
PHY_WRITE(mac, 0x47a, 0xc111);
}
if (mac->mac_flags & BWI_MAC_F_TPCTL_INITED)
return;
if (phy->phy_mode == IEEE80211_MODE_11B && phy->phy_rev >= 2 &&
rf->rf_type == BWI_RF_T_BCM2050) {
RF_SETBITS(mac, 0x76, 0x84);
} else {
struct bwi_tpctl tpctl;
/* Backup original TX power control variables */
bcopy(&mac->mac_tpctl, &tpctl_orig, sizeof(tpctl_orig));
restore_tpctl = 1;
bcopy(&mac->mac_tpctl, &tpctl, sizeof(tpctl));
tpctl.bbp_atten = 11;
tpctl.tp_ctrl1 = 0;
#ifdef notyet
if (rf->rf_rev >= 6 && rf->rf_rev <= 8)
tpctl.rf_atten = 31;
else
#endif
tpctl.rf_atten = 9;
bwi_mac_set_tpctl_11bg(mac, &tpctl);
}
bwi_mac_dummy_xmit(mac);
mac->mac_flags |= BWI_MAC_F_TPCTL_INITED;
rf->rf_base_tssi = PHY_READ(mac, 0x29);
DPRINTF(sc, BWI_DBG_MAC | BWI_DBG_INIT | BWI_DBG_TXPOWER,
"base tssi %d\n", rf->rf_base_tssi);
if (abs(rf->rf_base_tssi - rf->rf_idle_tssi) >= 20) {
device_printf(sc->sc_dev, "base tssi measure failed\n");
mac->mac_flags |= BWI_MAC_F_TPCTL_ERROR;
}
if (restore_tpctl)
bwi_mac_set_tpctl_11bg(mac, &tpctl_orig);
else
RF_CLRBITS(mac, 0x76, 0x84);
bwi_rf_clear_tssi(mac);
}
void
bwi_mac_detach(struct bwi_mac *mac)
{
bwi_mac_fw_free(mac);
}
static __inline int
bwi_fwimage_is_valid(struct bwi_softc *sc, const struct firmware *fw,
uint8_t fw_type)
{
const struct bwi_fwhdr *hdr;
struct ifnet *ifp = sc->sc_ifp;
if (fw->datasize < sizeof(*hdr)) {
if_printf(ifp, "invalid firmware (%s): invalid size %zu\n",
fw->name, fw->datasize);
return 0;
}
hdr = (const struct bwi_fwhdr *)fw->data;
if (fw_type != BWI_FW_T_IV) {
/*
* Don't verify IV's size, it has different meaning
*/
if (be32toh(hdr->fw_size) != fw->datasize - sizeof(*hdr)) {
if_printf(ifp, "invalid firmware (%s): size mismatch, "
"fw %u, real %zu\n", fw->name,
be32toh(hdr->fw_size),
fw->datasize - sizeof(*hdr));
return 0;
}
}
if (hdr->fw_type != fw_type) {
if_printf(ifp, "invalid firmware (%s): type mismatch, "
"fw \'%c\', target \'%c\'\n", fw->name,
hdr->fw_type, fw_type);
return 0;
}
if (hdr->fw_gen != BWI_FW_GEN_1) {
if_printf(ifp, "invalid firmware (%s): wrong generation, "
"fw %d, target %d\n", fw->name,
hdr->fw_gen, BWI_FW_GEN_1);
return 0;
}
return 1;
}
/*
* XXX Error cleanup
*/
static int
bwi_mac_fw_alloc(struct bwi_mac *mac)
{
struct bwi_softc *sc = mac->mac_sc;
struct ifnet *ifp = sc->sc_ifp;
char fwname[64];
int idx;
/*
* Try getting the firmware stub so firmware
* module would be loaded automatically
*/
if (mac->mac_stub == NULL) {
snprintf(fwname, sizeof(fwname), BWI_FW_STUB_PATH,
sc->sc_fw_version);
mac->mac_stub = firmware_get(fwname);
if (mac->mac_stub == NULL) {
if_printf(ifp, "request firmware %s failed\n", fwname);
return ENOMEM;
}
}
if (mac->mac_ucode == NULL) {
snprintf(fwname, sizeof(fwname), BWI_FW_UCODE_PATH,
sc->sc_fw_version,
mac->mac_rev >= 5 ? 5 : mac->mac_rev);
mac->mac_ucode = firmware_get(fwname);
if (mac->mac_ucode == NULL) {
if_printf(ifp, "request firmware %s failed\n", fwname);
return ENOMEM;
}
if (!bwi_fwimage_is_valid(sc, mac->mac_ucode, BWI_FW_T_UCODE))
return EINVAL;
}
if (mac->mac_pcm == NULL) {
snprintf(fwname, sizeof(fwname), BWI_FW_PCM_PATH,
sc->sc_fw_version,
mac->mac_rev < 5 ? 4 : 5);
mac->mac_pcm = firmware_get(fwname);
if (mac->mac_pcm == NULL) {
if_printf(ifp, "request firmware %s failed\n", fwname);
return ENOMEM;
}
if (!bwi_fwimage_is_valid(sc, mac->mac_pcm, BWI_FW_T_PCM))
return EINVAL;
}
if (mac->mac_iv == NULL) {
/* TODO: 11A */
if (mac->mac_rev == 2 || mac->mac_rev == 4) {
idx = 2;
} else if (mac->mac_rev >= 5 && mac->mac_rev <= 10) {
idx = 5;
} else {
if_printf(ifp, "no suitible IV for MAC rev %d\n",
mac->mac_rev);
return ENODEV;
}
snprintf(fwname, sizeof(fwname), BWI_FW_IV_PATH,
sc->sc_fw_version, idx);
mac->mac_iv = firmware_get(fwname);
if (mac->mac_iv == NULL) {
if_printf(ifp, "request firmware %s failed\n", fwname);
return ENOMEM;
}
if (!bwi_fwimage_is_valid(sc, mac->mac_iv, BWI_FW_T_IV))
return EINVAL;
}
if (mac->mac_iv_ext == NULL) {
/* TODO: 11A */
if (mac->mac_rev == 2 || mac->mac_rev == 4 ||
mac->mac_rev >= 11) {
/* No extended IV */
goto back;
} else if (mac->mac_rev >= 5 && mac->mac_rev <= 10) {
idx = 5;
} else {
if_printf(ifp, "no suitible ExtIV for MAC rev %d\n",
mac->mac_rev);
return ENODEV;
}
snprintf(fwname, sizeof(fwname), BWI_FW_IV_EXT_PATH,
sc->sc_fw_version, idx);
mac->mac_iv_ext = firmware_get(fwname);
if (mac->mac_iv_ext == NULL) {
if_printf(ifp, "request firmware %s failed\n", fwname);
return ENOMEM;
}
if (!bwi_fwimage_is_valid(sc, mac->mac_iv_ext, BWI_FW_T_IV))
return EINVAL;
}
back:
return 0;
}
static void
bwi_mac_fw_free(struct bwi_mac *mac)
{
if (mac->mac_ucode != NULL) {
firmware_put(mac->mac_ucode, FIRMWARE_UNLOAD);
mac->mac_ucode = NULL;
}
if (mac->mac_pcm != NULL) {
firmware_put(mac->mac_pcm, FIRMWARE_UNLOAD);
mac->mac_pcm = NULL;
}
if (mac->mac_iv != NULL) {
firmware_put(mac->mac_iv, FIRMWARE_UNLOAD);
mac->mac_iv = NULL;
}
if (mac->mac_iv_ext != NULL) {
firmware_put(mac->mac_iv_ext, FIRMWARE_UNLOAD);
mac->mac_iv_ext = NULL;
}
if (mac->mac_stub != NULL) {
firmware_put(mac->mac_stub, FIRMWARE_UNLOAD);
mac->mac_stub = NULL;
}
}
static int
bwi_mac_fw_load(struct bwi_mac *mac)
{
struct bwi_softc *sc = mac->mac_sc;
struct ifnet *ifp = sc->sc_ifp;
const uint32_t *fw;
uint16_t fw_rev;
int fw_len, i;
/*
* Load ucode image
*/
fw = (const uint32_t *)
((const uint8_t *)mac->mac_ucode->data + BWI_FWHDR_SZ);
fw_len = (mac->mac_ucode->datasize - BWI_FWHDR_SZ) / sizeof(uint32_t);
CSR_WRITE_4(sc, BWI_MOBJ_CTRL,
BWI_MOBJ_CTRL_VAL(
BWI_FW_UCODE_MOBJ | BWI_WR_MOBJ_AUTOINC, 0));
for (i = 0; i < fw_len; ++i) {
CSR_WRITE_4(sc, BWI_MOBJ_DATA, be32toh(fw[i]));
DELAY(10);
}
/*
* Load PCM image
*/
fw = (const uint32_t *)
((const uint8_t *)mac->mac_pcm->data + BWI_FWHDR_SZ);
fw_len = (mac->mac_pcm->datasize - BWI_FWHDR_SZ) / sizeof(uint32_t);
CSR_WRITE_4(sc, BWI_MOBJ_CTRL,
BWI_MOBJ_CTRL_VAL(BWI_FW_PCM_MOBJ, 0x01ea));
CSR_WRITE_4(sc, BWI_MOBJ_DATA, 0x4000);
CSR_WRITE_4(sc, BWI_MOBJ_CTRL,
BWI_MOBJ_CTRL_VAL(BWI_FW_PCM_MOBJ, 0x01eb));
for (i = 0; i < fw_len; ++i) {
CSR_WRITE_4(sc, BWI_MOBJ_DATA, be32toh(fw[i]));
DELAY(10);
}
CSR_WRITE_4(sc, BWI_MAC_INTR_STATUS, BWI_ALL_INTRS);
CSR_WRITE_4(sc, BWI_MAC_STATUS,
BWI_MAC_STATUS_UCODE_START |
BWI_MAC_STATUS_IHREN |
BWI_MAC_STATUS_INFRA);
#define NRETRY 200
for (i = 0; i < NRETRY; ++i) {
uint32_t intr_status;
intr_status = CSR_READ_4(sc, BWI_MAC_INTR_STATUS);
if (intr_status == BWI_INTR_READY)
break;
DELAY(10);
}
if (i == NRETRY) {
if_printf(ifp, "firmware (ucode&pcm) loading timed out\n");
return ETIMEDOUT;
}
#undef NRETRY
CSR_READ_4(sc, BWI_MAC_INTR_STATUS); /* dummy read */
fw_rev = MOBJ_READ_2(mac, BWI_COMM_MOBJ, BWI_COMM_MOBJ_FWREV);
if (fw_rev > BWI_FW_VERSION3_REVMAX) {
if_printf(ifp, "firmware version 4 is not supported yet\n");
return ENODEV;
}
if_printf(ifp, "firmware rev 0x%04x, patch level 0x%04x\n", fw_rev,
MOBJ_READ_2(mac, BWI_COMM_MOBJ, BWI_COMM_MOBJ_FWPATCHLV));
return 0;
}
static int
bwi_mac_gpio_init(struct bwi_mac *mac)
{
struct bwi_softc *sc = mac->mac_sc;
struct bwi_regwin *old, *gpio_rw;
uint32_t filt, bits;
int error;
CSR_CLRBITS_4(sc, BWI_MAC_STATUS, BWI_MAC_STATUS_GPOSEL_MASK);
/* TODO:LED */
CSR_SETBITS_2(sc, BWI_MAC_GPIO_MASK, 0xf);
filt = 0x1f;
bits = 0xf;
if (sc->sc_bbp_id == BWI_BBPID_BCM4301) {
filt |= 0x60;
bits |= 0x60;
}
if (sc->sc_card_flags & BWI_CARD_F_PA_GPIO9) {
CSR_SETBITS_2(sc, BWI_MAC_GPIO_MASK, 0x200);
filt |= 0x200;
bits |= 0x200;
}
gpio_rw = BWI_GPIO_REGWIN(sc);
error = bwi_regwin_switch(sc, gpio_rw, &old);
if (error)
return error;
CSR_FILT_SETBITS_4(sc, BWI_GPIO_CTRL, filt, bits);
return bwi_regwin_switch(sc, old, NULL);
}
static int
bwi_mac_gpio_fini(struct bwi_mac *mac)
{
struct bwi_softc *sc = mac->mac_sc;
struct bwi_regwin *old, *gpio_rw;
int error;
gpio_rw = BWI_GPIO_REGWIN(sc);
error = bwi_regwin_switch(sc, gpio_rw, &old);
if (error)
return error;
CSR_WRITE_4(sc, BWI_GPIO_CTRL, 0);
return bwi_regwin_switch(sc, old, NULL);
}
static int
bwi_mac_fw_load_iv(struct bwi_mac *mac, const struct firmware *fw)
{
struct bwi_softc *sc = mac->mac_sc;
struct ifnet *ifp = sc->sc_ifp;
const struct bwi_fwhdr *hdr;
const struct bwi_fw_iv *iv;
int n, i, iv_img_size;
/* Get the number of IVs in the IV image */
hdr = (const struct bwi_fwhdr *)fw->data;
n = be32toh(hdr->fw_iv_cnt);
DPRINTF(sc, BWI_DBG_MAC | BWI_DBG_INIT | BWI_DBG_FIRMWARE,
"IV count %d\n", n);
/* Calculate the IV image size, for later sanity check */
iv_img_size = fw->datasize - sizeof(*hdr);
/* Locate the first IV */
iv = (const struct bwi_fw_iv *)
((const uint8_t *)fw->data + sizeof(*hdr));
for (i = 0; i < n; ++i) {
uint16_t iv_ofs, ofs;
int sz = 0;
if (iv_img_size < sizeof(iv->iv_ofs)) {
if_printf(ifp, "invalid IV image, ofs\n");
return EINVAL;
}
iv_img_size -= sizeof(iv->iv_ofs);
sz += sizeof(iv->iv_ofs);
iv_ofs = be16toh(iv->iv_ofs);
ofs = __SHIFTOUT(iv_ofs, BWI_FW_IV_OFS_MASK);
if (ofs >= 0x1000) {
if_printf(ifp, "invalid ofs (0x%04x) "
"for %dth iv\n", ofs, i);
return EINVAL;
}
if (iv_ofs & BWI_FW_IV_IS_32BIT) {
uint32_t val32;
if (iv_img_size < sizeof(iv->iv_val.val32)) {
if_printf(ifp, "invalid IV image, val32\n");
return EINVAL;
}
iv_img_size -= sizeof(iv->iv_val.val32);
sz += sizeof(iv->iv_val.val32);
val32 = be32toh(iv->iv_val.val32);
CSR_WRITE_4(sc, ofs, val32);
} else {
uint16_t val16;
if (iv_img_size < sizeof(iv->iv_val.val16)) {
if_printf(ifp, "invalid IV image, val16\n");
return EINVAL;
}
iv_img_size -= sizeof(iv->iv_val.val16);
sz += sizeof(iv->iv_val.val16);
val16 = be16toh(iv->iv_val.val16);
CSR_WRITE_2(sc, ofs, val16);
}
iv = (const struct bwi_fw_iv *)((const uint8_t *)iv + sz);
}
if (iv_img_size != 0) {
if_printf(ifp, "invalid IV image, size left %d\n", iv_img_size);
return EINVAL;
}
return 0;
}
static int
bwi_mac_fw_init(struct bwi_mac *mac)
{
struct ifnet *ifp = mac->mac_sc->sc_ifp;
int error;
error = bwi_mac_fw_load_iv(mac, mac->mac_iv);
if (error) {
if_printf(ifp, "load IV failed\n");
return error;
}
if (mac->mac_iv_ext != NULL) {
error = bwi_mac_fw_load_iv(mac, mac->mac_iv_ext);
if (error)
if_printf(ifp, "load ExtIV failed\n");
}
return error;
}
static void
bwi_mac_opmode_init(struct bwi_mac *mac)
{
struct bwi_softc *sc = mac->mac_sc;
struct ifnet *ifp = sc->sc_ifp;
struct ieee80211com *ic = ifp->if_l2com;
uint32_t mac_status;
uint16_t pre_tbtt;
CSR_CLRBITS_4(sc, BWI_MAC_STATUS, BWI_MAC_STATUS_INFRA);
CSR_SETBITS_4(sc, BWI_MAC_STATUS, BWI_MAC_STATUS_INFRA);
/* Set probe resp timeout to infinite */
MOBJ_WRITE_2(mac, BWI_COMM_MOBJ, BWI_COMM_MOBJ_PROBE_RESP_TO, 0);
/*
* TODO: factor out following part
*/
mac_status = CSR_READ_4(sc, BWI_MAC_STATUS);
mac_status &= ~(BWI_MAC_STATUS_OPMODE_HOSTAP |
BWI_MAC_STATUS_PASS_CTL |
BWI_MAC_STATUS_PASS_BCN |
BWI_MAC_STATUS_PASS_BADPLCP |
BWI_MAC_STATUS_PASS_BADFCS |
BWI_MAC_STATUS_PROMISC);
mac_status |= BWI_MAC_STATUS_INFRA;
/* Always turn on PROMISC on old hardware */
if (mac->mac_rev < 5)
mac_status |= BWI_MAC_STATUS_PROMISC;
switch (ic->ic_opmode) {
case IEEE80211_M_IBSS:
mac_status &= ~BWI_MAC_STATUS_INFRA;
break;
case IEEE80211_M_HOSTAP:
mac_status |= BWI_MAC_STATUS_OPMODE_HOSTAP;
break;
case IEEE80211_M_MONITOR:
#if 0
/* Do you want data from your microwave oven? */
mac_status |= BWI_MAC_STATUS_PASS_CTL |
BWI_MAC_STATUS_PASS_BADPLCP |
BWI_MAC_STATUS_PASS_BADFCS;
#else
mac_status |= BWI_MAC_STATUS_PASS_CTL;
#endif
/* Promisc? */
break;
default:
break;
}
if (ic->ic_ifp->if_flags & IFF_PROMISC)
mac_status |= BWI_MAC_STATUS_PROMISC;
CSR_WRITE_4(sc, BWI_MAC_STATUS, mac_status);
if (ic->ic_opmode != IEEE80211_M_IBSS &&
ic->ic_opmode != IEEE80211_M_HOSTAP) {
if (sc->sc_bbp_id == BWI_BBPID_BCM4306 && sc->sc_bbp_rev == 3)
pre_tbtt = 100;
else
pre_tbtt = 50;
} else {
pre_tbtt = 2;
}
CSR_WRITE_2(sc, BWI_MAC_PRE_TBTT, pre_tbtt);
}
static void
bwi_mac_hostflags_init(struct bwi_mac *mac)
{
struct bwi_softc *sc = mac->mac_sc;
struct bwi_phy *phy = &mac->mac_phy;
struct bwi_rf *rf = &mac->mac_rf;
uint64_t host_flags;
if (phy->phy_mode == IEEE80211_MODE_11A)
return;
host_flags = HFLAGS_READ(mac);
host_flags |= BWI_HFLAG_SYM_WA;
if (phy->phy_mode == IEEE80211_MODE_11G) {
if (phy->phy_rev == 1)
host_flags |= BWI_HFLAG_GDC_WA;
if (sc->sc_card_flags & BWI_CARD_F_PA_GPIO9)
host_flags |= BWI_HFLAG_OFDM_PA;
} else if (phy->phy_mode == IEEE80211_MODE_11B) {
if (phy->phy_rev >= 2 && rf->rf_type == BWI_RF_T_BCM2050)
host_flags &= ~BWI_HFLAG_GDC_WA;
} else {
panic("unknown PHY mode %u\n", phy->phy_mode);
}
HFLAGS_WRITE(mac, host_flags);
}
static void
bwi_mac_bss_param_init(struct bwi_mac *mac)
{
struct bwi_softc *sc = mac->mac_sc;
struct bwi_phy *phy = &mac->mac_phy;
struct ifnet *ifp = sc->sc_ifp;
struct ieee80211com *ic = ifp->if_l2com;
const struct ieee80211_rate_table *rt;
struct bwi_retry_lim lim;
uint16_t cw_min;
/*
* Set short/long retry limits
*/
bzero(&lim, sizeof(lim));
lim.shretry = BWI_SHRETRY;
lim.shretry_fb = BWI_SHRETRY_FB;
lim.lgretry = BWI_LGRETRY;
lim.lgretry_fb = BWI_LGRETRY_FB;
bwi_mac_set_retry_lim(mac, &lim);
/*
* Implicitly prevent firmware from sending probe response
* by setting its "probe response timeout" to 1us.
*/
MOBJ_WRITE_2(mac, BWI_COMM_MOBJ, BWI_COMM_MOBJ_PROBE_RESP_TO, 1);
/*
* XXX MAC level acknowledge and CW min/max should depend
* on the char rateset of the IBSS/BSS to join.
* XXX this is all wrong; should be done on channel change
*/
if (phy->phy_mode == IEEE80211_MODE_11B) {
rt = ieee80211_get_ratetable(
ieee80211_find_channel(ic, 2412, IEEE80211_CHAN_B));
bwi_mac_set_ackrates(mac, rt,
&ic->ic_sup_rates[IEEE80211_MODE_11B]);
} else {
rt = ieee80211_get_ratetable(
ieee80211_find_channel(ic, 2412, IEEE80211_CHAN_G));
bwi_mac_set_ackrates(mac, rt,
&ic->ic_sup_rates[IEEE80211_MODE_11G]);
}
/*
* Set CW min
*/
if (phy->phy_mode == IEEE80211_MODE_11B)
cw_min = IEEE80211_CW_MIN_0;
else
cw_min = IEEE80211_CW_MIN_1;
MOBJ_WRITE_2(mac, BWI_80211_MOBJ, BWI_80211_MOBJ_CWMIN, cw_min);
/*
* Set CW max
*/
MOBJ_WRITE_2(mac, BWI_80211_MOBJ, BWI_80211_MOBJ_CWMAX,
IEEE80211_CW_MAX);
}
static void
bwi_mac_set_retry_lim(struct bwi_mac *mac, const struct bwi_retry_lim *lim)
{
/* Short/Long retry limit */
MOBJ_WRITE_2(mac, BWI_80211_MOBJ, BWI_80211_MOBJ_SHRETRY,
lim->shretry);
MOBJ_WRITE_2(mac, BWI_80211_MOBJ, BWI_80211_MOBJ_LGRETRY,
lim->lgretry);
/* Short/Long retry fallback limit */
MOBJ_WRITE_2(mac, BWI_COMM_MOBJ, BWI_COMM_MOBJ_SHRETRY_FB,
lim->shretry_fb);
MOBJ_WRITE_2(mac, BWI_COMM_MOBJ, BWI_COMM_MOBJ_LGRETEY_FB,
lim->lgretry_fb);
}
static void
bwi_mac_set_ackrates(struct bwi_mac *mac, const struct ieee80211_rate_table *rt,
const struct ieee80211_rateset *rs)
{
int i;
/* XXX not standard conforming */
for (i = 0; i < rs->rs_nrates; ++i) {
enum ieee80211_phytype modtype;
uint16_t ofs;
modtype = ieee80211_rate2phytype(rt, rs->rs_rates[i]);
switch (modtype) {
case IEEE80211_T_DS:
ofs = 0x4c0;
break;
case IEEE80211_T_OFDM:
ofs = 0x480;
break;
default:
panic("unsupported modtype %u\n", modtype);
}
ofs += 2*(ieee80211_rate2plcp(rs->rs_rates[i], modtype) & 0xf);
MOBJ_WRITE_2(mac, BWI_COMM_MOBJ, ofs + 0x20,
MOBJ_READ_2(mac, BWI_COMM_MOBJ, ofs));
}
}
int
bwi_mac_start(struct bwi_mac *mac)
{
struct bwi_softc *sc = mac->mac_sc;
CSR_SETBITS_4(sc, BWI_MAC_STATUS, BWI_MAC_STATUS_ENABLE);
CSR_WRITE_4(sc, BWI_MAC_INTR_STATUS, BWI_INTR_READY);
/* Flush pending bus writes */
CSR_READ_4(sc, BWI_MAC_STATUS);
CSR_READ_4(sc, BWI_MAC_INTR_STATUS);
return bwi_mac_config_ps(mac);
}
int
bwi_mac_stop(struct bwi_mac *mac)
{
struct bwi_softc *sc = mac->mac_sc;
int error, i;
error = bwi_mac_config_ps(mac);
if (error)
return error;
CSR_CLRBITS_4(sc, BWI_MAC_STATUS, BWI_MAC_STATUS_ENABLE);
/* Flush pending bus write */
CSR_READ_4(sc, BWI_MAC_STATUS);
#define NRETRY 10000
for (i = 0; i < NRETRY; ++i) {
if (CSR_READ_4(sc, BWI_MAC_INTR_STATUS) & BWI_INTR_READY)
break;
DELAY(1);
}
if (i == NRETRY) {
device_printf(sc->sc_dev, "can't stop MAC\n");
return ETIMEDOUT;
}
#undef NRETRY
return 0;
}
int
bwi_mac_config_ps(struct bwi_mac *mac)
{
struct bwi_softc *sc = mac->mac_sc;
uint32_t status;
status = CSR_READ_4(sc, BWI_MAC_STATUS);
status &= ~BWI_MAC_STATUS_HW_PS;
status |= BWI_MAC_STATUS_WAKEUP;
CSR_WRITE_4(sc, BWI_MAC_STATUS, status);
/* Flush pending bus write */
CSR_READ_4(sc, BWI_MAC_STATUS);
if (mac->mac_rev >= 5) {
int i;
#define NRETRY 100
for (i = 0; i < NRETRY; ++i) {
if (MOBJ_READ_2(mac, BWI_COMM_MOBJ,
BWI_COMM_MOBJ_UCODE_STATE) != BWI_UCODE_STATE_PS)
break;
DELAY(10);
}
if (i == NRETRY) {
device_printf(sc->sc_dev, "config PS failed\n");
return ETIMEDOUT;
}
#undef NRETRY
}
return 0;
}
void
bwi_mac_reset_hwkeys(struct bwi_mac *mac)
{
/* TODO: firmware crypto */
MOBJ_READ_2(mac, BWI_COMM_MOBJ, BWI_COMM_MOBJ_KEYTABLE_OFS);
}
void
bwi_mac_shutdown(struct bwi_mac *mac)
{
struct bwi_softc *sc = mac->mac_sc;
int i;
if (mac->mac_flags & BWI_MAC_F_HAS_TXSTATS)
sc->sc_free_txstats(sc);
sc->sc_free_rx_ring(sc);
for (i = 0; i < BWI_TX_NRING; ++i)
sc->sc_free_tx_ring(sc, i);
bwi_rf_off(mac);
/* TODO:LED */
bwi_mac_gpio_fini(mac);
bwi_rf_off(mac); /* XXX again */
CSR_WRITE_2(sc, BWI_BBP_ATTEN, BWI_BBP_ATTEN_MAGIC);
bwi_regwin_disable(sc, &mac->mac_regwin, 0);
mac->mac_flags &= ~BWI_MAC_F_INITED;
}
static int
bwi_mac_get_property(struct bwi_mac *mac)
{
struct bwi_softc *sc = mac->mac_sc;
enum bwi_bus_space old_bus_space;
uint32_t val;
/*
* Byte swap
*/
val = CSR_READ_4(sc, BWI_MAC_STATUS);
if (val & BWI_MAC_STATUS_BSWAP) {
DPRINTF(sc, BWI_DBG_MAC | BWI_DBG_ATTACH, "%s\n",
"need byte swap");
mac->mac_flags |= BWI_MAC_F_BSWAP;
}
/*
* DMA address space
*/
old_bus_space = sc->sc_bus_space;
val = CSR_READ_4(sc, BWI_STATE_HI);
if (__SHIFTOUT(val, BWI_STATE_HI_FLAGS_MASK) &
BWI_STATE_HI_FLAG_64BIT) {
/* 64bit address */
sc->sc_bus_space = BWI_BUS_SPACE_64BIT;
DPRINTF(sc, BWI_DBG_MAC | BWI_DBG_ATTACH, "%s\n",
"64bit bus space");
} else {
uint32_t txrx_reg = BWI_TXRX_CTRL_BASE + BWI_TX32_CTRL;
CSR_WRITE_4(sc, txrx_reg, BWI_TXRX32_CTRL_ADDRHI_MASK);
if (CSR_READ_4(sc, txrx_reg) & BWI_TXRX32_CTRL_ADDRHI_MASK) {
/* 32bit address */
sc->sc_bus_space = BWI_BUS_SPACE_32BIT;
DPRINTF(sc, BWI_DBG_MAC | BWI_DBG_ATTACH, "%s\n",
"32bit bus space");
} else {
/* 30bit address */
sc->sc_bus_space = BWI_BUS_SPACE_30BIT;
DPRINTF(sc, BWI_DBG_MAC | BWI_DBG_ATTACH, "%s\n",
"30bit bus space");
}
}
if (old_bus_space != 0 && old_bus_space != sc->sc_bus_space) {
device_printf(sc->sc_dev, "MACs bus space mismatch!\n");
return ENXIO;
}
return 0;
}
void
bwi_mac_updateslot(struct bwi_mac *mac, int shslot)
{
uint16_t slot_time;
if (mac->mac_phy.phy_mode == IEEE80211_MODE_11B)
return;
if (shslot)
slot_time = IEEE80211_DUR_SHSLOT;
else
slot_time = IEEE80211_DUR_SLOT;
CSR_WRITE_2(mac->mac_sc, BWI_MAC_SLOTTIME,
slot_time + BWI_MAC_SLOTTIME_ADJUST);
MOBJ_WRITE_2(mac, BWI_COMM_MOBJ, BWI_COMM_MOBJ_SLOTTIME, slot_time);
}
int
bwi_mac_attach(struct bwi_softc *sc, int id, uint8_t rev)
{
struct bwi_mac *mac;
int i;
KASSERT(sc->sc_nmac <= BWI_MAC_MAX && sc->sc_nmac >= 0,
("sc_nmac %d", sc->sc_nmac));
if (sc->sc_nmac == BWI_MAC_MAX) {
device_printf(sc->sc_dev, "too many MACs\n");
return 0;
}
/*
* More than one MAC is only supported by BCM4309
*/
if (sc->sc_nmac != 0 &&
sc->sc_pci_did != PCI_PRODUCT_BROADCOM_BCM4309) {
DPRINTF(sc, BWI_DBG_MAC | BWI_DBG_ATTACH, "%s\n",
"ignore second MAC");
return 0;
}
mac = &sc->sc_mac[sc->sc_nmac];
/* XXX will this happen? */
if (BWI_REGWIN_EXIST(&mac->mac_regwin)) {
device_printf(sc->sc_dev, "%dth MAC already attached\n",
sc->sc_nmac);
return 0;
}
/*
* Test whether the revision of this MAC is supported
*/
#define N(arr) (int)(sizeof(arr) / sizeof(arr[0]))
for (i = 0; i < N(bwi_sup_macrev); ++i) {
if (bwi_sup_macrev[i] == rev)
break;
}
if (i == N(bwi_sup_macrev)) {
device_printf(sc->sc_dev, "MAC rev %u is "
"not supported\n", rev);
return ENXIO;
}
#undef N
BWI_CREATE_MAC(mac, sc, id, rev);
sc->sc_nmac++;
if (mac->mac_rev < 5) {
mac->mac_flags |= BWI_MAC_F_HAS_TXSTATS;
DPRINTF(sc, BWI_DBG_MAC | BWI_DBG_ATTACH, "%s\n",
"has TX stats");
} else {
mac->mac_flags |= BWI_MAC_F_PHYE_RESET;
}
device_printf(sc->sc_dev, "MAC: rev %u\n", rev);
return 0;
}
static __inline void
bwi_mac_balance_atten(int *bbp_atten0, int *rf_atten0)
{
int bbp_atten, rf_atten, rf_atten_lim = -1;
bbp_atten = *bbp_atten0;
rf_atten = *rf_atten0;
/*
* RF attenuation affects TX power BWI_RF_ATTEN_FACTOR times
* as much as BBP attenuation, so we try our best to keep RF
* attenuation within range. BBP attenuation will be clamped
* later if it is out of range during balancing.
*
* BWI_RF_ATTEN_MAX0 is used as RF attenuation upper limit.
*/
/*
* Use BBP attenuation to balance RF attenuation
*/
if (rf_atten < 0)
rf_atten_lim = 0;
else if (rf_atten > BWI_RF_ATTEN_MAX0)
rf_atten_lim = BWI_RF_ATTEN_MAX0;
if (rf_atten_lim >= 0) {
bbp_atten += (BWI_RF_ATTEN_FACTOR * (rf_atten - rf_atten_lim));
rf_atten = rf_atten_lim;
}
/*
* If possible, use RF attenuation to balance BBP attenuation
* NOTE: RF attenuation is still kept within range.
*/
while (rf_atten < BWI_RF_ATTEN_MAX0 && bbp_atten > BWI_BBP_ATTEN_MAX) {
bbp_atten -= BWI_RF_ATTEN_FACTOR;
++rf_atten;
}
while (rf_atten > 0 && bbp_atten < 0) {
bbp_atten += BWI_RF_ATTEN_FACTOR;
--rf_atten;
}
/* RF attenuation MUST be within range */
KASSERT(rf_atten >= 0 && rf_atten <= BWI_RF_ATTEN_MAX0,
("rf_atten %d", rf_atten));
/*
* Clamp BBP attenuation
*/
if (bbp_atten < 0)
bbp_atten = 0;
else if (bbp_atten > BWI_BBP_ATTEN_MAX)
bbp_atten = BWI_BBP_ATTEN_MAX;
*rf_atten0 = rf_atten;
*bbp_atten0 = bbp_atten;
}
static void
bwi_mac_adjust_tpctl(struct bwi_mac *mac, int rf_atten_adj, int bbp_atten_adj)
{
struct bwi_softc *sc = mac->mac_sc;
struct bwi_rf *rf = &mac->mac_rf;
struct bwi_tpctl tpctl;
int bbp_atten, rf_atten, tp_ctrl1;
bcopy(&mac->mac_tpctl, &tpctl, sizeof(tpctl));
/* NOTE: Use signed value to do calulation */
bbp_atten = tpctl.bbp_atten;
rf_atten = tpctl.rf_atten;
tp_ctrl1 = tpctl.tp_ctrl1;
bbp_atten += bbp_atten_adj;
rf_atten += rf_atten_adj;
bwi_mac_balance_atten(&bbp_atten, &rf_atten);
if (rf->rf_type == BWI_RF_T_BCM2050 && rf->rf_rev == 2) {
if (rf_atten <= 1) {
if (tp_ctrl1 == 0) {
tp_ctrl1 = 3;
bbp_atten += 2;
rf_atten += 2;
} else if (sc->sc_card_flags & BWI_CARD_F_PA_GPIO9) {
bbp_atten +=
(BWI_RF_ATTEN_FACTOR * (rf_atten - 2));
rf_atten = 2;
}
} else if (rf_atten > 4 && tp_ctrl1 != 0) {
tp_ctrl1 = 0;
if (bbp_atten < 3) {
bbp_atten += 2;
rf_atten -= 3;
} else {
bbp_atten -= 2;
rf_atten -= 2;
}
}
bwi_mac_balance_atten(&bbp_atten, &rf_atten);
}
tpctl.bbp_atten = bbp_atten;
tpctl.rf_atten = rf_atten;
tpctl.tp_ctrl1 = tp_ctrl1;
bwi_mac_lock(mac);
bwi_mac_set_tpctl_11bg(mac, &tpctl);
bwi_mac_unlock(mac);
}
/*
* http://bcm-specs.sipsolutions.net/RecalculateTransmissionPower
*/
void
bwi_mac_calibrate_txpower(struct bwi_mac *mac, enum bwi_txpwrcb_type type)
{
struct bwi_softc *sc = mac->mac_sc;
struct bwi_rf *rf = &mac->mac_rf;
int8_t tssi[4], tssi_avg, cur_txpwr;
int error, i, ofdm_tssi;
int txpwr_diff, rf_atten_adj, bbp_atten_adj;
if (!sc->sc_txpwr_calib)
return;
if (mac->mac_flags & BWI_MAC_F_TPCTL_ERROR) {
DPRINTF(sc, BWI_DBG_MAC | BWI_DBG_TXPOWER, "%s\n",
"tpctl error happened, can't set txpower");
return;
}
if (BWI_IS_BRCM_BU4306(sc)) {
DPRINTF(sc, BWI_DBG_MAC | BWI_DBG_TXPOWER, "%s\n",
"BU4306, can't set txpower");
return;
}
/*
* Save latest TSSI and reset the related memory objects
*/
ofdm_tssi = 0;
error = bwi_rf_get_latest_tssi(mac, tssi, BWI_COMM_MOBJ_TSSI_DS);
if (error) {
DPRINTF(sc, BWI_DBG_MAC | BWI_DBG_TXPOWER, "%s\n",
"no DS tssi");
if (mac->mac_phy.phy_mode == IEEE80211_MODE_11B) {
if (type == BWI_TXPWR_FORCE) {
rf_atten_adj = 0;
bbp_atten_adj = 1;
goto calib;
} else {
return;
}
}
error = bwi_rf_get_latest_tssi(mac, tssi,
BWI_COMM_MOBJ_TSSI_OFDM);
if (error) {
DPRINTF(sc, BWI_DBG_MAC | BWI_DBG_TXPOWER, "%s\n",
"no OFDM tssi");
if (type == BWI_TXPWR_FORCE) {
rf_atten_adj = 0;
bbp_atten_adj = 1;
goto calib;
} else {
return;
}
}
for (i = 0; i < 4; ++i) {
tssi[i] += 0x20;
tssi[i] &= 0x3f;
}
ofdm_tssi = 1;
}
bwi_rf_clear_tssi(mac);
DPRINTF(sc, BWI_DBG_MAC | BWI_DBG_TXPOWER,
"tssi0 %d, tssi1 %d, tssi2 %d, tssi3 %d\n",
tssi[0], tssi[1], tssi[2], tssi[3]);
/*
* Calculate RF/BBP attenuation adjustment based on
* the difference between desired TX power and sampled
* TX power.
*/
/* +8 == "each incremented by 1/2" */
tssi_avg = (tssi[0] + tssi[1] + tssi[2] + tssi[3] + 8) / 4;
if (ofdm_tssi && (HFLAGS_READ(mac) & BWI_HFLAG_PWR_BOOST_DS))
tssi_avg -= 13;
DPRINTF(sc, BWI_DBG_MAC | BWI_DBG_TXPOWER, "tssi avg %d\n", tssi_avg);
error = bwi_rf_tssi2dbm(mac, tssi_avg, &cur_txpwr);
if (error)
return;
DPRINTF(sc, BWI_DBG_MAC | BWI_DBG_TXPOWER, "current txpower %d\n",
cur_txpwr);
txpwr_diff = rf->rf_txpower_max - cur_txpwr; /* XXX ni_txpower */
rf_atten_adj = -howmany(txpwr_diff, 8);
if (type == BWI_TXPWR_INIT) {
/*
* Move toward EEPROM max TX power as fast as we can
*/
bbp_atten_adj = -txpwr_diff;
} else {
bbp_atten_adj = -(txpwr_diff / 2);
}
bbp_atten_adj -= (BWI_RF_ATTEN_FACTOR * rf_atten_adj);
if (rf_atten_adj == 0 && bbp_atten_adj == 0) {
DPRINTF(sc, BWI_DBG_MAC | BWI_DBG_TXPOWER, "%s\n",
"no need to adjust RF/BBP attenuation");
/* TODO: LO */
return;
}
calib:
DPRINTF(sc, BWI_DBG_MAC | BWI_DBG_TXPOWER,
"rf atten adjust %d, bbp atten adjust %d\n",
rf_atten_adj, bbp_atten_adj);
bwi_mac_adjust_tpctl(mac, rf_atten_adj, bbp_atten_adj);
/* TODO: LO */
}
static void
bwi_mac_lock(struct bwi_mac *mac)
{
struct bwi_softc *sc = mac->mac_sc;
struct ifnet *ifp = sc->sc_ifp;
struct ieee80211com *ic = ifp->if_l2com;
KASSERT((mac->mac_flags & BWI_MAC_F_LOCKED) == 0,
("mac_flags 0x%x", mac->mac_flags));
if (mac->mac_rev < 3)
bwi_mac_stop(mac);
else if (ic->ic_opmode != IEEE80211_M_HOSTAP)
bwi_mac_config_ps(mac);
CSR_SETBITS_4(sc, BWI_MAC_STATUS, BWI_MAC_STATUS_RFLOCK);
/* Flush pending bus write */
CSR_READ_4(sc, BWI_MAC_STATUS);
DELAY(10);
mac->mac_flags |= BWI_MAC_F_LOCKED;
}
static void
bwi_mac_unlock(struct bwi_mac *mac)
{
struct bwi_softc *sc = mac->mac_sc;
struct ifnet *ifp = sc->sc_ifp;
struct ieee80211com *ic = ifp->if_l2com;
KASSERT(mac->mac_flags & BWI_MAC_F_LOCKED,
("mac_flags 0x%x", mac->mac_flags));
CSR_READ_2(sc, BWI_PHYINFO); /* dummy read */
CSR_CLRBITS_4(sc, BWI_MAC_STATUS, BWI_MAC_STATUS_RFLOCK);
if (mac->mac_rev < 3)
bwi_mac_start(mac);
else if (ic->ic_opmode != IEEE80211_M_HOSTAP)
bwi_mac_config_ps(mac);
mac->mac_flags &= ~BWI_MAC_F_LOCKED;
}
void
bwi_mac_set_promisc(struct bwi_mac *mac, int promisc)
{
struct bwi_softc *sc = mac->mac_sc;
if (mac->mac_rev < 5) /* Promisc is always on */
return;
if (promisc)
CSR_SETBITS_4(sc, BWI_MAC_STATUS, BWI_MAC_STATUS_PROMISC);
else
CSR_CLRBITS_4(sc, BWI_MAC_STATUS, BWI_MAC_STATUS_PROMISC);
}
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