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kernel-ark/drivers/net/wireless/b43/main.c
Rafał Miłecki 828afd26fe b43: fix logic in GPIO init 
Add some comments by the way

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-08-02 13:51:47 -04:00

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/*
Broadcom B43 wireless driver
Copyright (c) 2005 Martin Langer <martin-langer@gmx.de>
Copyright (c) 2005 Stefano Brivio <stefano.brivio@polimi.it>
Copyright (c) 2005-2009 Michael Buesch <m@bues.ch>
Copyright (c) 2005 Danny van Dyk <kugelfang@gentoo.org>
Copyright (c) 2005 Andreas Jaggi <andreas.jaggi@waterwave.ch>
Copyright (c) 2010-2011 Rafał Miłecki <zajec5@gmail.com>
SDIO support
Copyright (c) 2009 Albert Herranz <albert_herranz@yahoo.es>
Some parts of the code in this file are derived from the ipw2200
driver Copyright(c) 2003 - 2004 Intel Corporation.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; see the file COPYING. If not, write to
the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include <linux/delay.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/if_arp.h>
#include <linux/etherdevice.h>
#include <linux/firmware.h>
#include <linux/workqueue.h>
#include <linux/skbuff.h>
#include <linux/io.h>
#include <linux/dma-mapping.h>
#include <linux/slab.h>
#include <asm/unaligned.h>
#include "b43.h"
#include "main.h"
#include "debugfs.h"
#include "phy_common.h"
#include "phy_g.h"
#include "phy_n.h"
#include "dma.h"
#include "pio.h"
#include "sysfs.h"
#include "xmit.h"
#include "lo.h"
#include "pcmcia.h"
#include "sdio.h"
#include <linux/mmc/sdio_func.h>
MODULE_DESCRIPTION("Broadcom B43 wireless driver");
MODULE_AUTHOR("Martin Langer");
MODULE_AUTHOR("Stefano Brivio");
MODULE_AUTHOR("Michael Buesch");
MODULE_AUTHOR("Gábor Stefanik");
MODULE_AUTHOR("Rafał Miłecki");
MODULE_LICENSE("GPL");
MODULE_FIRMWARE("b43/ucode11.fw");
MODULE_FIRMWARE("b43/ucode13.fw");
MODULE_FIRMWARE("b43/ucode14.fw");
MODULE_FIRMWARE("b43/ucode15.fw");
MODULE_FIRMWARE("b43/ucode16_mimo.fw");
MODULE_FIRMWARE("b43/ucode5.fw");
MODULE_FIRMWARE("b43/ucode9.fw");
static int modparam_bad_frames_preempt;
module_param_named(bad_frames_preempt, modparam_bad_frames_preempt, int, 0444);
MODULE_PARM_DESC(bad_frames_preempt,
"enable(1) / disable(0) Bad Frames Preemption");
static char modparam_fwpostfix[16];
module_param_string(fwpostfix, modparam_fwpostfix, 16, 0444);
MODULE_PARM_DESC(fwpostfix, "Postfix for the .fw files to load.");
static int modparam_hwpctl;
module_param_named(hwpctl, modparam_hwpctl, int, 0444);
MODULE_PARM_DESC(hwpctl, "Enable hardware-side power control (default off)");
static int modparam_nohwcrypt;
module_param_named(nohwcrypt, modparam_nohwcrypt, int, 0444);
MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption.");
static int modparam_hwtkip;
module_param_named(hwtkip, modparam_hwtkip, int, 0444);
MODULE_PARM_DESC(hwtkip, "Enable hardware tkip.");
static int modparam_qos = 1;
module_param_named(qos, modparam_qos, int, 0444);
MODULE_PARM_DESC(qos, "Enable QOS support (default on)");
static int modparam_btcoex = 1;
module_param_named(btcoex, modparam_btcoex, int, 0444);
MODULE_PARM_DESC(btcoex, "Enable Bluetooth coexistence (default on)");
int b43_modparam_verbose = B43_VERBOSITY_DEFAULT;
module_param_named(verbose, b43_modparam_verbose, int, 0644);
MODULE_PARM_DESC(verbose, "Log message verbosity: 0=error, 1=warn, 2=info(default), 3=debug");
static int b43_modparam_pio = 0;
module_param_named(pio, b43_modparam_pio, int, 0644);
MODULE_PARM_DESC(pio, "Use PIO accesses by default: 0=DMA, 1=PIO");
#ifdef CONFIG_B43_BCMA
static const struct bcma_device_id b43_bcma_tbl[] = {
BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 0x11, BCMA_ANY_CLASS),
#ifdef CONFIG_B43_BCMA_EXTRA
BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 0x17, BCMA_ANY_CLASS),
BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 0x18, BCMA_ANY_CLASS),
#endif
BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 0x1D, BCMA_ANY_CLASS),
BCMA_CORETABLE_END
};
MODULE_DEVICE_TABLE(bcma, b43_bcma_tbl);
#endif
#ifdef CONFIG_B43_SSB
static const struct ssb_device_id b43_ssb_tbl[] = {
SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 5),
SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 6),
SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 7),
SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 9),
SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 10),
SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 11),
SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 12),
SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 13),
SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 15),
SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 16),
SSB_DEVTABLE_END
};
MODULE_DEVICE_TABLE(ssb, b43_ssb_tbl);
#endif
/* Channel and ratetables are shared for all devices.
* They can't be const, because ieee80211 puts some precalculated
* data in there. This data is the same for all devices, so we don't
* get concurrency issues */
#define RATETAB_ENT(_rateid, _flags) \
{ \
.bitrate = B43_RATE_TO_BASE100KBPS(_rateid), \
.hw_value = (_rateid), \
.flags = (_flags), \
}
/*
* NOTE: When changing this, sync with xmit.c's
* b43_plcp_get_bitrate_idx_* functions!
*/
static struct ieee80211_rate __b43_ratetable[] = {
RATETAB_ENT(B43_CCK_RATE_1MB, 0),
RATETAB_ENT(B43_CCK_RATE_2MB, IEEE80211_RATE_SHORT_PREAMBLE),
RATETAB_ENT(B43_CCK_RATE_5MB, IEEE80211_RATE_SHORT_PREAMBLE),
RATETAB_ENT(B43_CCK_RATE_11MB, IEEE80211_RATE_SHORT_PREAMBLE),
RATETAB_ENT(B43_OFDM_RATE_6MB, 0),
RATETAB_ENT(B43_OFDM_RATE_9MB, 0),
RATETAB_ENT(B43_OFDM_RATE_12MB, 0),
RATETAB_ENT(B43_OFDM_RATE_18MB, 0),
RATETAB_ENT(B43_OFDM_RATE_24MB, 0),
RATETAB_ENT(B43_OFDM_RATE_36MB, 0),
RATETAB_ENT(B43_OFDM_RATE_48MB, 0),
RATETAB_ENT(B43_OFDM_RATE_54MB, 0),
};
#define b43_a_ratetable (__b43_ratetable + 4)
#define b43_a_ratetable_size 8
#define b43_b_ratetable (__b43_ratetable + 0)
#define b43_b_ratetable_size 4
#define b43_g_ratetable (__b43_ratetable + 0)
#define b43_g_ratetable_size 12
#define CHAN4G(_channel, _freq, _flags) { \
.band = IEEE80211_BAND_2GHZ, \
.center_freq = (_freq), \
.hw_value = (_channel), \
.flags = (_flags), \
.max_antenna_gain = 0, \
.max_power = 30, \
}
static struct ieee80211_channel b43_2ghz_chantable[] = {
CHAN4G(1, 2412, 0),
CHAN4G(2, 2417, 0),
CHAN4G(3, 2422, 0),
CHAN4G(4, 2427, 0),
CHAN4G(5, 2432, 0),
CHAN4G(6, 2437, 0),
CHAN4G(7, 2442, 0),
CHAN4G(8, 2447, 0),
CHAN4G(9, 2452, 0),
CHAN4G(10, 2457, 0),
CHAN4G(11, 2462, 0),
CHAN4G(12, 2467, 0),
CHAN4G(13, 2472, 0),
CHAN4G(14, 2484, 0),
};
#undef CHAN4G
#define CHAN5G(_channel, _flags) { \
.band = IEEE80211_BAND_5GHZ, \
.center_freq = 5000 + (5 * (_channel)), \
.hw_value = (_channel), \
.flags = (_flags), \
.max_antenna_gain = 0, \
.max_power = 30, \
}
static struct ieee80211_channel b43_5ghz_nphy_chantable[] = {
CHAN5G(32, 0), CHAN5G(34, 0),
CHAN5G(36, 0), CHAN5G(38, 0),
CHAN5G(40, 0), CHAN5G(42, 0),
CHAN5G(44, 0), CHAN5G(46, 0),
CHAN5G(48, 0), CHAN5G(50, 0),
CHAN5G(52, 0), CHAN5G(54, 0),
CHAN5G(56, 0), CHAN5G(58, 0),
CHAN5G(60, 0), CHAN5G(62, 0),
CHAN5G(64, 0), CHAN5G(66, 0),
CHAN5G(68, 0), CHAN5G(70, 0),
CHAN5G(72, 0), CHAN5G(74, 0),
CHAN5G(76, 0), CHAN5G(78, 0),
CHAN5G(80, 0), CHAN5G(82, 0),
CHAN5G(84, 0), CHAN5G(86, 0),
CHAN5G(88, 0), CHAN5G(90, 0),
CHAN5G(92, 0), CHAN5G(94, 0),
CHAN5G(96, 0), CHAN5G(98, 0),
CHAN5G(100, 0), CHAN5G(102, 0),
CHAN5G(104, 0), CHAN5G(106, 0),
CHAN5G(108, 0), CHAN5G(110, 0),
CHAN5G(112, 0), CHAN5G(114, 0),
CHAN5G(116, 0), CHAN5G(118, 0),
CHAN5G(120, 0), CHAN5G(122, 0),
CHAN5G(124, 0), CHAN5G(126, 0),
CHAN5G(128, 0), CHAN5G(130, 0),
CHAN5G(132, 0), CHAN5G(134, 0),
CHAN5G(136, 0), CHAN5G(138, 0),
CHAN5G(140, 0), CHAN5G(142, 0),
CHAN5G(144, 0), CHAN5G(145, 0),
CHAN5G(146, 0), CHAN5G(147, 0),
CHAN5G(148, 0), CHAN5G(149, 0),
CHAN5G(150, 0), CHAN5G(151, 0),
CHAN5G(152, 0), CHAN5G(153, 0),
CHAN5G(154, 0), CHAN5G(155, 0),
CHAN5G(156, 0), CHAN5G(157, 0),
CHAN5G(158, 0), CHAN5G(159, 0),
CHAN5G(160, 0), CHAN5G(161, 0),
CHAN5G(162, 0), CHAN5G(163, 0),
CHAN5G(164, 0), CHAN5G(165, 0),
CHAN5G(166, 0), CHAN5G(168, 0),
CHAN5G(170, 0), CHAN5G(172, 0),
CHAN5G(174, 0), CHAN5G(176, 0),
CHAN5G(178, 0), CHAN5G(180, 0),
CHAN5G(182, 0), CHAN5G(184, 0),
CHAN5G(186, 0), CHAN5G(188, 0),
CHAN5G(190, 0), CHAN5G(192, 0),
CHAN5G(194, 0), CHAN5G(196, 0),
CHAN5G(198, 0), CHAN5G(200, 0),
CHAN5G(202, 0), CHAN5G(204, 0),
CHAN5G(206, 0), CHAN5G(208, 0),
CHAN5G(210, 0), CHAN5G(212, 0),
CHAN5G(214, 0), CHAN5G(216, 0),
CHAN5G(218, 0), CHAN5G(220, 0),
CHAN5G(222, 0), CHAN5G(224, 0),
CHAN5G(226, 0), CHAN5G(228, 0),
};
static struct ieee80211_channel b43_5ghz_aphy_chantable[] = {
CHAN5G(34, 0), CHAN5G(36, 0),
CHAN5G(38, 0), CHAN5G(40, 0),
CHAN5G(42, 0), CHAN5G(44, 0),
CHAN5G(46, 0), CHAN5G(48, 0),
CHAN5G(52, 0), CHAN5G(56, 0),
CHAN5G(60, 0), CHAN5G(64, 0),
CHAN5G(100, 0), CHAN5G(104, 0),
CHAN5G(108, 0), CHAN5G(112, 0),
CHAN5G(116, 0), CHAN5G(120, 0),
CHAN5G(124, 0), CHAN5G(128, 0),
CHAN5G(132, 0), CHAN5G(136, 0),
CHAN5G(140, 0), CHAN5G(149, 0),
CHAN5G(153, 0), CHAN5G(157, 0),
CHAN5G(161, 0), CHAN5G(165, 0),
CHAN5G(184, 0), CHAN5G(188, 0),
CHAN5G(192, 0), CHAN5G(196, 0),
CHAN5G(200, 0), CHAN5G(204, 0),
CHAN5G(208, 0), CHAN5G(212, 0),
CHAN5G(216, 0),
};
#undef CHAN5G
static struct ieee80211_supported_band b43_band_5GHz_nphy = {
.band = IEEE80211_BAND_5GHZ,
.channels = b43_5ghz_nphy_chantable,
.n_channels = ARRAY_SIZE(b43_5ghz_nphy_chantable),
.bitrates = b43_a_ratetable,
.n_bitrates = b43_a_ratetable_size,
};
static struct ieee80211_supported_band b43_band_5GHz_aphy = {
.band = IEEE80211_BAND_5GHZ,
.channels = b43_5ghz_aphy_chantable,
.n_channels = ARRAY_SIZE(b43_5ghz_aphy_chantable),
.bitrates = b43_a_ratetable,
.n_bitrates = b43_a_ratetable_size,
};
static struct ieee80211_supported_band b43_band_2GHz = {
.band = IEEE80211_BAND_2GHZ,
.channels = b43_2ghz_chantable,
.n_channels = ARRAY_SIZE(b43_2ghz_chantable),
.bitrates = b43_g_ratetable,
.n_bitrates = b43_g_ratetable_size,
};
static void b43_wireless_core_exit(struct b43_wldev *dev);
static int b43_wireless_core_init(struct b43_wldev *dev);
static struct b43_wldev * b43_wireless_core_stop(struct b43_wldev *dev);
static int b43_wireless_core_start(struct b43_wldev *dev);
static void b43_op_bss_info_changed(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_bss_conf *conf,
u32 changed);
static int b43_ratelimit(struct b43_wl *wl)
{
if (!wl || !wl->current_dev)
return 1;
if (b43_status(wl->current_dev) < B43_STAT_STARTED)
return 1;
/* We are up and running.
* Ratelimit the messages to avoid DoS over the net. */
return net_ratelimit();
}
void b43info(struct b43_wl *wl, const char *fmt, ...)
{
struct va_format vaf;
va_list args;
if (b43_modparam_verbose < B43_VERBOSITY_INFO)
return;
if (!b43_ratelimit(wl))
return;
va_start(args, fmt);
vaf.fmt = fmt;
vaf.va = &args;
printk(KERN_INFO "b43-%s: %pV",
(wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan", &vaf);
va_end(args);
}
void b43err(struct b43_wl *wl, const char *fmt, ...)
{
struct va_format vaf;
va_list args;
if (b43_modparam_verbose < B43_VERBOSITY_ERROR)
return;
if (!b43_ratelimit(wl))
return;
va_start(args, fmt);
vaf.fmt = fmt;
vaf.va = &args;
printk(KERN_ERR "b43-%s ERROR: %pV",
(wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan", &vaf);
va_end(args);
}
void b43warn(struct b43_wl *wl, const char *fmt, ...)
{
struct va_format vaf;
va_list args;
if (b43_modparam_verbose < B43_VERBOSITY_WARN)
return;
if (!b43_ratelimit(wl))
return;
va_start(args, fmt);
vaf.fmt = fmt;
vaf.va = &args;
printk(KERN_WARNING "b43-%s warning: %pV",
(wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan", &vaf);
va_end(args);
}
void b43dbg(struct b43_wl *wl, const char *fmt, ...)
{
struct va_format vaf;
va_list args;
if (b43_modparam_verbose < B43_VERBOSITY_DEBUG)
return;
va_start(args, fmt);
vaf.fmt = fmt;
vaf.va = &args;
printk(KERN_DEBUG "b43-%s debug: %pV",
(wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan", &vaf);
va_end(args);
}
static void b43_ram_write(struct b43_wldev *dev, u16 offset, u32 val)
{
u32 macctl;
B43_WARN_ON(offset % 4 != 0);
macctl = b43_read32(dev, B43_MMIO_MACCTL);
if (macctl & B43_MACCTL_BE)
val = swab32(val);
b43_write32(dev, B43_MMIO_RAM_CONTROL, offset);
mmiowb();
b43_write32(dev, B43_MMIO_RAM_DATA, val);
}
static inline void b43_shm_control_word(struct b43_wldev *dev,
u16 routing, u16 offset)
{
u32 control;
/* "offset" is the WORD offset. */
control = routing;
control <<= 16;
control |= offset;
b43_write32(dev, B43_MMIO_SHM_CONTROL, control);
}
u32 b43_shm_read32(struct b43_wldev *dev, u16 routing, u16 offset)
{
u32 ret;
if (routing == B43_SHM_SHARED) {
B43_WARN_ON(offset & 0x0001);
if (offset & 0x0003) {
/* Unaligned access */
b43_shm_control_word(dev, routing, offset >> 2);
ret = b43_read16(dev, B43_MMIO_SHM_DATA_UNALIGNED);
b43_shm_control_word(dev, routing, (offset >> 2) + 1);
ret |= ((u32)b43_read16(dev, B43_MMIO_SHM_DATA)) << 16;
goto out;
}
offset >>= 2;
}
b43_shm_control_word(dev, routing, offset);
ret = b43_read32(dev, B43_MMIO_SHM_DATA);
out:
return ret;
}
u16 b43_shm_read16(struct b43_wldev *dev, u16 routing, u16 offset)
{
u16 ret;
if (routing == B43_SHM_SHARED) {
B43_WARN_ON(offset & 0x0001);
if (offset & 0x0003) {
/* Unaligned access */
b43_shm_control_word(dev, routing, offset >> 2);
ret = b43_read16(dev, B43_MMIO_SHM_DATA_UNALIGNED);
goto out;
}
offset >>= 2;
}
b43_shm_control_word(dev, routing, offset);
ret = b43_read16(dev, B43_MMIO_SHM_DATA);
out:
return ret;
}
void b43_shm_write32(struct b43_wldev *dev, u16 routing, u16 offset, u32 value)
{
if (routing == B43_SHM_SHARED) {
B43_WARN_ON(offset & 0x0001);
if (offset & 0x0003) {
/* Unaligned access */
b43_shm_control_word(dev, routing, offset >> 2);
b43_write16(dev, B43_MMIO_SHM_DATA_UNALIGNED,
value & 0xFFFF);
b43_shm_control_word(dev, routing, (offset >> 2) + 1);
b43_write16(dev, B43_MMIO_SHM_DATA,
(value >> 16) & 0xFFFF);
return;
}
offset >>= 2;
}
b43_shm_control_word(dev, routing, offset);
b43_write32(dev, B43_MMIO_SHM_DATA, value);
}
void b43_shm_write16(struct b43_wldev *dev, u16 routing, u16 offset, u16 value)
{
if (routing == B43_SHM_SHARED) {
B43_WARN_ON(offset & 0x0001);
if (offset & 0x0003) {
/* Unaligned access */
b43_shm_control_word(dev, routing, offset >> 2);
b43_write16(dev, B43_MMIO_SHM_DATA_UNALIGNED, value);
return;
}
offset >>= 2;
}
b43_shm_control_word(dev, routing, offset);
b43_write16(dev, B43_MMIO_SHM_DATA, value);
}
/* Read HostFlags */
u64 b43_hf_read(struct b43_wldev *dev)
{
u64 ret;
ret = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFHI);
ret <<= 16;
ret |= b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFMI);
ret <<= 16;
ret |= b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFLO);
return ret;
}
/* Write HostFlags */
void b43_hf_write(struct b43_wldev *dev, u64 value)
{
u16 lo, mi, hi;
lo = (value & 0x00000000FFFFULL);
mi = (value & 0x0000FFFF0000ULL) >> 16;
hi = (value & 0xFFFF00000000ULL) >> 32;
b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFLO, lo);
b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFMI, mi);
b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFHI, hi);
}
/* Read the firmware capabilities bitmask (Opensource firmware only) */
static u16 b43_fwcapa_read(struct b43_wldev *dev)
{
B43_WARN_ON(!dev->fw.opensource);
return b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_FWCAPA);
}
void b43_tsf_read(struct b43_wldev *dev, u64 *tsf)
{
u32 low, high;
B43_WARN_ON(dev->dev->core_rev < 3);
/* The hardware guarantees us an atomic read, if we
* read the low register first. */
low = b43_read32(dev, B43_MMIO_REV3PLUS_TSF_LOW);
high = b43_read32(dev, B43_MMIO_REV3PLUS_TSF_HIGH);
*tsf = high;
*tsf <<= 32;
*tsf |= low;
}
static void b43_time_lock(struct b43_wldev *dev)
{
b43_maskset32(dev, B43_MMIO_MACCTL, ~0, B43_MACCTL_TBTTHOLD);
/* Commit the write */
b43_read32(dev, B43_MMIO_MACCTL);
}
static void b43_time_unlock(struct b43_wldev *dev)
{
b43_maskset32(dev, B43_MMIO_MACCTL, ~B43_MACCTL_TBTTHOLD, 0);
/* Commit the write */
b43_read32(dev, B43_MMIO_MACCTL);
}
static void b43_tsf_write_locked(struct b43_wldev *dev, u64 tsf)
{
u32 low, high;
B43_WARN_ON(dev->dev->core_rev < 3);
low = tsf;
high = (tsf >> 32);
/* The hardware guarantees us an atomic write, if we
* write the low register first. */
b43_write32(dev, B43_MMIO_REV3PLUS_TSF_LOW, low);
mmiowb();
b43_write32(dev, B43_MMIO_REV3PLUS_TSF_HIGH, high);
mmiowb();
}
void b43_tsf_write(struct b43_wldev *dev, u64 tsf)
{
b43_time_lock(dev);
b43_tsf_write_locked(dev, tsf);
b43_time_unlock(dev);
}
static
void b43_macfilter_set(struct b43_wldev *dev, u16 offset, const u8 *mac)
{
static const u8 zero_addr[ETH_ALEN] = { 0 };
u16 data;
if (!mac)
mac = zero_addr;
offset |= 0x0020;
b43_write16(dev, B43_MMIO_MACFILTER_CONTROL, offset);
data = mac[0];
data |= mac[1] << 8;
b43_write16(dev, B43_MMIO_MACFILTER_DATA, data);
data = mac[2];
data |= mac[3] << 8;
b43_write16(dev, B43_MMIO_MACFILTER_DATA, data);
data = mac[4];
data |= mac[5] << 8;
b43_write16(dev, B43_MMIO_MACFILTER_DATA, data);
}
static void b43_write_mac_bssid_templates(struct b43_wldev *dev)
{
const u8 *mac;
const u8 *bssid;
u8 mac_bssid[ETH_ALEN * 2];
int i;
u32 tmp;
bssid = dev->wl->bssid;
mac = dev->wl->mac_addr;
b43_macfilter_set(dev, B43_MACFILTER_BSSID, bssid);
memcpy(mac_bssid, mac, ETH_ALEN);
memcpy(mac_bssid + ETH_ALEN, bssid, ETH_ALEN);
/* Write our MAC address and BSSID to template ram */
for (i = 0; i < ARRAY_SIZE(mac_bssid); i += sizeof(u32)) {
tmp = (u32) (mac_bssid[i + 0]);
tmp |= (u32) (mac_bssid[i + 1]) << 8;
tmp |= (u32) (mac_bssid[i + 2]) << 16;
tmp |= (u32) (mac_bssid[i + 3]) << 24;
b43_ram_write(dev, 0x20 + i, tmp);
}
}
static void b43_upload_card_macaddress(struct b43_wldev *dev)
{
b43_write_mac_bssid_templates(dev);
b43_macfilter_set(dev, B43_MACFILTER_SELF, dev->wl->mac_addr);
}
static void b43_set_slot_time(struct b43_wldev *dev, u16 slot_time)
{
/* slot_time is in usec. */
/* This test used to exit for all but a G PHY. */
if (b43_current_band(dev->wl) == IEEE80211_BAND_5GHZ)
return;
b43_write16(dev, B43_MMIO_IFSSLOT, 510 + slot_time);
/* Shared memory location 0x0010 is the slot time and should be
* set to slot_time; however, this register is initially 0 and changing
* the value adversely affects the transmit rate for BCM4311
* devices. Until this behavior is unterstood, delete this step
*
* b43_shm_write16(dev, B43_SHM_SHARED, 0x0010, slot_time);
*/
}
static void b43_short_slot_timing_enable(struct b43_wldev *dev)
{
b43_set_slot_time(dev, 9);
}
static void b43_short_slot_timing_disable(struct b43_wldev *dev)
{
b43_set_slot_time(dev, 20);
}
/* DummyTransmission function, as documented on
* http://bcm-v4.sipsolutions.net/802.11/DummyTransmission
*/
void b43_dummy_transmission(struct b43_wldev *dev, bool ofdm, bool pa_on)
{
struct b43_phy *phy = &dev->phy;
unsigned int i, max_loop;
u16 value;
u32 buffer[5] = {
0x00000000,
0x00D40000,
0x00000000,
0x01000000,
0x00000000,
};
if (ofdm) {
max_loop = 0x1E;
buffer[0] = 0x000201CC;
} else {
max_loop = 0xFA;
buffer[0] = 0x000B846E;
}
for (i = 0; i < 5; i++)
b43_ram_write(dev, i * 4, buffer[i]);
b43_write16(dev, B43_MMIO_XMTSEL, 0x0000);
if (dev->dev->core_rev < 11)
b43_write16(dev, B43_MMIO_WEPCTL, 0x0000);
else
b43_write16(dev, B43_MMIO_WEPCTL, 0x0100);
value = (ofdm ? 0x41 : 0x40);
b43_write16(dev, B43_MMIO_TXE0_PHYCTL, value);
if (phy->type == B43_PHYTYPE_N || phy->type == B43_PHYTYPE_LP ||
phy->type == B43_PHYTYPE_LCN)
b43_write16(dev, B43_MMIO_TXE0_PHYCTL1, 0x1A02);
b43_write16(dev, B43_MMIO_TXE0_WM_0, 0x0000);
b43_write16(dev, B43_MMIO_TXE0_WM_1, 0x0000);
b43_write16(dev, B43_MMIO_XMTTPLATETXPTR, 0x0000);
b43_write16(dev, B43_MMIO_XMTTXCNT, 0x0014);
b43_write16(dev, B43_MMIO_XMTSEL, 0x0826);
b43_write16(dev, B43_MMIO_TXE0_CTL, 0x0000);
if (!pa_on && phy->type == B43_PHYTYPE_N)
; /*b43_nphy_pa_override(dev, false) */
switch (phy->type) {
case B43_PHYTYPE_N:
case B43_PHYTYPE_LCN:
b43_write16(dev, B43_MMIO_TXE0_AUX, 0x00D0);
break;
case B43_PHYTYPE_LP:
b43_write16(dev, B43_MMIO_TXE0_AUX, 0x0050);
break;
default:
b43_write16(dev, B43_MMIO_TXE0_AUX, 0x0030);
}
b43_read16(dev, B43_MMIO_TXE0_AUX);
if (phy->radio_ver == 0x2050 && phy->radio_rev <= 0x5)
b43_radio_write16(dev, 0x0051, 0x0017);
for (i = 0x00; i < max_loop; i++) {
value = b43_read16(dev, B43_MMIO_TXE0_STATUS);
if (value & 0x0080)
break;
udelay(10);
}
for (i = 0x00; i < 0x0A; i++) {
value = b43_read16(dev, B43_MMIO_TXE0_STATUS);
if (value & 0x0400)
break;
udelay(10);
}
for (i = 0x00; i < 0x19; i++) {
value = b43_read16(dev, B43_MMIO_IFSSTAT);
if (!(value & 0x0100))
break;
udelay(10);
}
if (phy->radio_ver == 0x2050 && phy->radio_rev <= 0x5)
b43_radio_write16(dev, 0x0051, 0x0037);
}
static void key_write(struct b43_wldev *dev,
u8 index, u8 algorithm, const u8 *key)
{
unsigned int i;
u32 offset;
u16 value;
u16 kidx;
/* Key index/algo block */
kidx = b43_kidx_to_fw(dev, index);
value = ((kidx << 4) | algorithm);
b43_shm_write16(dev, B43_SHM_SHARED,
B43_SHM_SH_KEYIDXBLOCK + (kidx * 2), value);
/* Write the key to the Key Table Pointer offset */
offset = dev->ktp + (index * B43_SEC_KEYSIZE);
for (i = 0; i < B43_SEC_KEYSIZE; i += 2) {
value = key[i];
value |= (u16) (key[i + 1]) << 8;
b43_shm_write16(dev, B43_SHM_SHARED, offset + i, value);
}
}
static void keymac_write(struct b43_wldev *dev, u8 index, const u8 *addr)
{
u32 addrtmp[2] = { 0, 0, };
u8 pairwise_keys_start = B43_NR_GROUP_KEYS * 2;
if (b43_new_kidx_api(dev))
pairwise_keys_start = B43_NR_GROUP_KEYS;
B43_WARN_ON(index < pairwise_keys_start);
/* We have four default TX keys and possibly four default RX keys.
* Physical mac 0 is mapped to physical key 4 or 8, depending
* on the firmware version.
* So we must adjust the index here.
*/
index -= pairwise_keys_start;
B43_WARN_ON(index >= B43_NR_PAIRWISE_KEYS);
if (addr) {
addrtmp[0] = addr[0];
addrtmp[0] |= ((u32) (addr[1]) << 8);
addrtmp[0] |= ((u32) (addr[2]) << 16);
addrtmp[0] |= ((u32) (addr[3]) << 24);
addrtmp[1] = addr[4];
addrtmp[1] |= ((u32) (addr[5]) << 8);
}
/* Receive match transmitter address (RCMTA) mechanism */
b43_shm_write32(dev, B43_SHM_RCMTA,
(index * 2) + 0, addrtmp[0]);
b43_shm_write16(dev, B43_SHM_RCMTA,
(index * 2) + 1, addrtmp[1]);
}
/* The ucode will use phase1 key with TEK key to decrypt rx packets.
* When a packet is received, the iv32 is checked.
* - if it doesn't the packet is returned without modification (and software
* decryption can be done). That's what happen when iv16 wrap.
* - if it does, the rc4 key is computed, and decryption is tried.
* Either it will success and B43_RX_MAC_DEC is returned,
* either it fails and B43_RX_MAC_DEC|B43_RX_MAC_DECERR is returned
* and the packet is not usable (it got modified by the ucode).
* So in order to never have B43_RX_MAC_DECERR, we should provide
* a iv32 and phase1key that match. Because we drop packets in case of
* B43_RX_MAC_DECERR, if we have a correct iv32 but a wrong phase1key, all
* packets will be lost without higher layer knowing (ie no resync possible
* until next wrap).
*
* NOTE : this should support 50 key like RCMTA because
* (B43_SHM_SH_KEYIDXBLOCK - B43_SHM_SH_TKIPTSCTTAK)/14 = 50
*/
static void rx_tkip_phase1_write(struct b43_wldev *dev, u8 index, u32 iv32,
u16 *phase1key)
{
unsigned int i;
u32 offset;
u8 pairwise_keys_start = B43_NR_GROUP_KEYS * 2;
if (!modparam_hwtkip)
return;
if (b43_new_kidx_api(dev))
pairwise_keys_start = B43_NR_GROUP_KEYS;
B43_WARN_ON(index < pairwise_keys_start);
/* We have four default TX keys and possibly four default RX keys.
* Physical mac 0 is mapped to physical key 4 or 8, depending
* on the firmware version.
* So we must adjust the index here.
*/
index -= pairwise_keys_start;
B43_WARN_ON(index >= B43_NR_PAIRWISE_KEYS);
if (b43_debug(dev, B43_DBG_KEYS)) {
b43dbg(dev->wl, "rx_tkip_phase1_write : idx 0x%x, iv32 0x%x\n",
index, iv32);
}
/* Write the key to the RX tkip shared mem */
offset = B43_SHM_SH_TKIPTSCTTAK + index * (10 + 4);
for (i = 0; i < 10; i += 2) {
b43_shm_write16(dev, B43_SHM_SHARED, offset + i,
phase1key ? phase1key[i / 2] : 0);
}
b43_shm_write16(dev, B43_SHM_SHARED, offset + i, iv32);
b43_shm_write16(dev, B43_SHM_SHARED, offset + i + 2, iv32 >> 16);
}
static void b43_op_update_tkip_key(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_key_conf *keyconf,
struct ieee80211_sta *sta,
u32 iv32, u16 *phase1key)
{
struct b43_wl *wl = hw_to_b43_wl(hw);
struct b43_wldev *dev;
int index = keyconf->hw_key_idx;
if (B43_WARN_ON(!modparam_hwtkip))
return;
/* This is only called from the RX path through mac80211, where
* our mutex is already locked. */
B43_WARN_ON(!mutex_is_locked(&wl->mutex));
dev = wl->current_dev;
B43_WARN_ON(!dev || b43_status(dev) < B43_STAT_INITIALIZED);
keymac_write(dev, index, NULL); /* First zero out mac to avoid race */
rx_tkip_phase1_write(dev, index, iv32, phase1key);
/* only pairwise TKIP keys are supported right now */
if (WARN_ON(!sta))
return;
keymac_write(dev, index, sta->addr);
}
static void do_key_write(struct b43_wldev *dev,
u8 index, u8 algorithm,
const u8 *key, size_t key_len, const u8 *mac_addr)
{
u8 buf[B43_SEC_KEYSIZE] = { 0, };
u8 pairwise_keys_start = B43_NR_GROUP_KEYS * 2;
if (b43_new_kidx_api(dev))
pairwise_keys_start = B43_NR_GROUP_KEYS;
B43_WARN_ON(index >= ARRAY_SIZE(dev->key));
B43_WARN_ON(key_len > B43_SEC_KEYSIZE);
if (index >= pairwise_keys_start)
keymac_write(dev, index, NULL); /* First zero out mac. */
if (algorithm == B43_SEC_ALGO_TKIP) {
/*
* We should provide an initial iv32, phase1key pair.
* We could start with iv32=0 and compute the corresponding
* phase1key, but this means calling ieee80211_get_tkip_key
* with a fake skb (or export other tkip function).
* Because we are lazy we hope iv32 won't start with
* 0xffffffff and let's b43_op_update_tkip_key provide a
* correct pair.
*/
rx_tkip_phase1_write(dev, index, 0xffffffff, (u16*)buf);
} else if (index >= pairwise_keys_start) /* clear it */
rx_tkip_phase1_write(dev, index, 0, NULL);
if (key)
memcpy(buf, key, key_len);
key_write(dev, index, algorithm, buf);
if (index >= pairwise_keys_start)
keymac_write(dev, index, mac_addr);
dev->key[index].algorithm = algorithm;
}
static int b43_key_write(struct b43_wldev *dev,
int index, u8 algorithm,
const u8 *key, size_t key_len,
const u8 *mac_addr,
struct ieee80211_key_conf *keyconf)
{
int i;
int pairwise_keys_start;
/* For ALG_TKIP the key is encoded as a 256-bit (32 byte) data block:
* - Temporal Encryption Key (128 bits)
* - Temporal Authenticator Tx MIC Key (64 bits)
* - Temporal Authenticator Rx MIC Key (64 bits)
*
* Hardware only store TEK
*/
if (algorithm == B43_SEC_ALGO_TKIP && key_len == 32)
key_len = 16;
if (key_len > B43_SEC_KEYSIZE)
return -EINVAL;
for (i = 0; i < ARRAY_SIZE(dev->key); i++) {
/* Check that we don't already have this key. */
B43_WARN_ON(dev->key[i].keyconf == keyconf);
}
if (index < 0) {
/* Pairwise key. Get an empty slot for the key. */
if (b43_new_kidx_api(dev))
pairwise_keys_start = B43_NR_GROUP_KEYS;
else
pairwise_keys_start = B43_NR_GROUP_KEYS * 2;
for (i = pairwise_keys_start;
i < pairwise_keys_start + B43_NR_PAIRWISE_KEYS;
i++) {
B43_WARN_ON(i >= ARRAY_SIZE(dev->key));
if (!dev->key[i].keyconf) {
/* found empty */
index = i;
break;
}
}
if (index < 0) {
b43warn(dev->wl, "Out of hardware key memory\n");
return -ENOSPC;
}
} else
B43_WARN_ON(index > 3);
do_key_write(dev, index, algorithm, key, key_len, mac_addr);
if ((index <= 3) && !b43_new_kidx_api(dev)) {
/* Default RX key */
B43_WARN_ON(mac_addr);
do_key_write(dev, index + 4, algorithm, key, key_len, NULL);
}
keyconf->hw_key_idx = index;
dev->key[index].keyconf = keyconf;
return 0;
}
static int b43_key_clear(struct b43_wldev *dev, int index)
{
if (B43_WARN_ON((index < 0) || (index >= ARRAY_SIZE(dev->key))))
return -EINVAL;
do_key_write(dev, index, B43_SEC_ALGO_NONE,
NULL, B43_SEC_KEYSIZE, NULL);
if ((index <= 3) && !b43_new_kidx_api(dev)) {
do_key_write(dev, index + 4, B43_SEC_ALGO_NONE,
NULL, B43_SEC_KEYSIZE, NULL);
}
dev->key[index].keyconf = NULL;
return 0;
}
static void b43_clear_keys(struct b43_wldev *dev)
{
int i, count;
if (b43_new_kidx_api(dev))
count = B43_NR_GROUP_KEYS + B43_NR_PAIRWISE_KEYS;
else
count = B43_NR_GROUP_KEYS * 2 + B43_NR_PAIRWISE_KEYS;
for (i = 0; i < count; i++)
b43_key_clear(dev, i);
}
static void b43_dump_keymemory(struct b43_wldev *dev)
{
unsigned int i, index, count, offset, pairwise_keys_start;
u8 mac[ETH_ALEN];
u16 algo;
u32 rcmta0;
u16 rcmta1;
u64 hf;
struct b43_key *key;
if (!b43_debug(dev, B43_DBG_KEYS))
return;
hf = b43_hf_read(dev);
b43dbg(dev->wl, "Hardware key memory dump: USEDEFKEYS=%u\n",
!!(hf & B43_HF_USEDEFKEYS));
if (b43_new_kidx_api(dev)) {
pairwise_keys_start = B43_NR_GROUP_KEYS;
count = B43_NR_GROUP_KEYS + B43_NR_PAIRWISE_KEYS;
} else {
pairwise_keys_start = B43_NR_GROUP_KEYS * 2;
count = B43_NR_GROUP_KEYS * 2 + B43_NR_PAIRWISE_KEYS;
}
for (index = 0; index < count; index++) {
key = &(dev->key[index]);
printk(KERN_DEBUG "Key slot %02u: %s",
index, (key->keyconf == NULL) ? " " : "*");
offset = dev->ktp + (index * B43_SEC_KEYSIZE);
for (i = 0; i < B43_SEC_KEYSIZE; i += 2) {
u16 tmp = b43_shm_read16(dev, B43_SHM_SHARED, offset + i);
printk("%02X%02X", (tmp & 0xFF), ((tmp >> 8) & 0xFF));
}
algo = b43_shm_read16(dev, B43_SHM_SHARED,
B43_SHM_SH_KEYIDXBLOCK + (index * 2));
printk(" Algo: %04X/%02X", algo, key->algorithm);
if (index >= pairwise_keys_start) {
if (key->algorithm == B43_SEC_ALGO_TKIP) {
printk(" TKIP: ");
offset = B43_SHM_SH_TKIPTSCTTAK + (index - 4) * (10 + 4);
for (i = 0; i < 14; i += 2) {
u16 tmp = b43_shm_read16(dev, B43_SHM_SHARED, offset + i);
printk("%02X%02X", (tmp & 0xFF), ((tmp >> 8) & 0xFF));
}
}
rcmta0 = b43_shm_read32(dev, B43_SHM_RCMTA,
((index - pairwise_keys_start) * 2) + 0);
rcmta1 = b43_shm_read16(dev, B43_SHM_RCMTA,
((index - pairwise_keys_start) * 2) + 1);
*((__le32 *)(&mac[0])) = cpu_to_le32(rcmta0);
*((__le16 *)(&mac[4])) = cpu_to_le16(rcmta1);
printk(" MAC: %pM", mac);
} else
printk(" DEFAULT KEY");
printk("\n");
}
}
void b43_power_saving_ctl_bits(struct b43_wldev *dev, unsigned int ps_flags)
{
u32 macctl;
u16 ucstat;
bool hwps;
bool awake;
int i;
B43_WARN_ON((ps_flags & B43_PS_ENABLED) &&
(ps_flags & B43_PS_DISABLED));
B43_WARN_ON((ps_flags & B43_PS_AWAKE) && (ps_flags & B43_PS_ASLEEP));
if (ps_flags & B43_PS_ENABLED) {
hwps = true;
} else if (ps_flags & B43_PS_DISABLED) {
hwps = false;
} else {
//TODO: If powersave is not off and FIXME is not set and we are not in adhoc
// and thus is not an AP and we are associated, set bit 25
}
if (ps_flags & B43_PS_AWAKE) {
awake = true;
} else if (ps_flags & B43_PS_ASLEEP) {
awake = false;
} else {
//TODO: If the device is awake or this is an AP, or we are scanning, or FIXME,
// or we are associated, or FIXME, or the latest PS-Poll packet sent was
// successful, set bit26
}
/* FIXME: For now we force awake-on and hwps-off */
hwps = false;
awake = true;
macctl = b43_read32(dev, B43_MMIO_MACCTL);
if (hwps)
macctl |= B43_MACCTL_HWPS;
else
macctl &= ~B43_MACCTL_HWPS;
if (awake)
macctl |= B43_MACCTL_AWAKE;
else
macctl &= ~B43_MACCTL_AWAKE;
b43_write32(dev, B43_MMIO_MACCTL, macctl);
/* Commit write */
b43_read32(dev, B43_MMIO_MACCTL);
if (awake && dev->dev->core_rev >= 5) {
/* Wait for the microcode to wake up. */
for (i = 0; i < 100; i++) {
ucstat = b43_shm_read16(dev, B43_SHM_SHARED,
B43_SHM_SH_UCODESTAT);
if (ucstat != B43_SHM_SH_UCODESTAT_SLEEP)
break;
udelay(10);
}
}
}
#ifdef CONFIG_B43_BCMA
static void b43_bcma_phy_reset(struct b43_wldev *dev)
{
u32 flags;
/* Put PHY into reset */
flags = bcma_aread32(dev->dev->bdev, BCMA_IOCTL);
flags |= B43_BCMA_IOCTL_PHY_RESET;
flags |= B43_BCMA_IOCTL_PHY_BW_20MHZ; /* Make 20 MHz def */
bcma_awrite32(dev->dev->bdev, BCMA_IOCTL, flags);
udelay(2);
/* Take PHY out of reset */
flags = bcma_aread32(dev->dev->bdev, BCMA_IOCTL);
flags &= ~B43_BCMA_IOCTL_PHY_RESET;
flags |= BCMA_IOCTL_FGC;
bcma_awrite32(dev->dev->bdev, BCMA_IOCTL, flags);
udelay(1);
/* Do not force clock anymore */
flags = bcma_aread32(dev->dev->bdev, BCMA_IOCTL);
flags &= ~BCMA_IOCTL_FGC;
bcma_awrite32(dev->dev->bdev, BCMA_IOCTL, flags);
udelay(1);
}
static void b43_bcma_wireless_core_reset(struct b43_wldev *dev, bool gmode)
{
b43_device_enable(dev, B43_BCMA_IOCTL_PHY_CLKEN);
bcma_core_set_clockmode(dev->dev->bdev, BCMA_CLKMODE_FAST);
b43_bcma_phy_reset(dev);
bcma_core_pll_ctl(dev->dev->bdev, 0x300, 0x3000000, true);
}
#endif
static void b43_ssb_wireless_core_reset(struct b43_wldev *dev, bool gmode)
{
struct ssb_device *sdev = dev->dev->sdev;
u32 tmslow;
u32 flags = 0;
if (gmode)
flags |= B43_TMSLOW_GMODE;
flags |= B43_TMSLOW_PHYCLKEN;
flags |= B43_TMSLOW_PHYRESET;
if (dev->phy.type == B43_PHYTYPE_N)
flags |= B43_TMSLOW_PHY_BANDWIDTH_20MHZ; /* Make 20 MHz def */
b43_device_enable(dev, flags);
msleep(2); /* Wait for the PLL to turn on. */
/* Now take the PHY out of Reset again */
tmslow = ssb_read32(sdev, SSB_TMSLOW);
tmslow |= SSB_TMSLOW_FGC;
tmslow &= ~B43_TMSLOW_PHYRESET;
ssb_write32(sdev, SSB_TMSLOW, tmslow);
ssb_read32(sdev, SSB_TMSLOW); /* flush */
msleep(1);
tmslow &= ~SSB_TMSLOW_FGC;
ssb_write32(sdev, SSB_TMSLOW, tmslow);
ssb_read32(sdev, SSB_TMSLOW); /* flush */
msleep(1);
}
void b43_wireless_core_reset(struct b43_wldev *dev, bool gmode)
{
u32 macctl;
switch (dev->dev->bus_type) {
#ifdef CONFIG_B43_BCMA
case B43_BUS_BCMA:
b43_bcma_wireless_core_reset(dev, gmode);
break;
#endif
#ifdef CONFIG_B43_SSB
case B43_BUS_SSB:
b43_ssb_wireless_core_reset(dev, gmode);
break;
#endif
}
/* Turn Analog ON, but only if we already know the PHY-type.
* This protects against very early setup where we don't know the
* PHY-type, yet. wireless_core_reset will be called once again later,
* when we know the PHY-type. */
if (dev->phy.ops)
dev->phy.ops->switch_analog(dev, 1);
macctl = b43_read32(dev, B43_MMIO_MACCTL);
macctl &= ~B43_MACCTL_GMODE;
if (gmode)
macctl |= B43_MACCTL_GMODE;
macctl |= B43_MACCTL_IHR_ENABLED;
b43_write32(dev, B43_MMIO_MACCTL, macctl);
}
static void handle_irq_transmit_status(struct b43_wldev *dev)
{
u32 v0, v1;
u16 tmp;
struct b43_txstatus stat;
while (1) {
v0 = b43_read32(dev, B43_MMIO_XMITSTAT_0);
if (!(v0 & 0x00000001))
break;
v1 = b43_read32(dev, B43_MMIO_XMITSTAT_1);
stat.cookie = (v0 >> 16);
stat.seq = (v1 & 0x0000FFFF);
stat.phy_stat = ((v1 & 0x00FF0000) >> 16);
tmp = (v0 & 0x0000FFFF);
stat.frame_count = ((tmp & 0xF000) >> 12);
stat.rts_count = ((tmp & 0x0F00) >> 8);
stat.supp_reason = ((tmp & 0x001C) >> 2);
stat.pm_indicated = !!(tmp & 0x0080);
stat.intermediate = !!(tmp & 0x0040);
stat.for_ampdu = !!(tmp & 0x0020);
stat.acked = !!(tmp & 0x0002);
b43_handle_txstatus(dev, &stat);
}
}
static void drain_txstatus_queue(struct b43_wldev *dev)
{
u32 dummy;
if (dev->dev->core_rev < 5)
return;
/* Read all entries from the microcode TXstatus FIFO
* and throw them away.
*/
while (1) {
dummy = b43_read32(dev, B43_MMIO_XMITSTAT_0);
if (!(dummy & 0x00000001))
break;
dummy = b43_read32(dev, B43_MMIO_XMITSTAT_1);
}
}
static u32 b43_jssi_read(struct b43_wldev *dev)
{
u32 val = 0;
val = b43_shm_read16(dev, B43_SHM_SHARED, 0x08A);
val <<= 16;
val |= b43_shm_read16(dev, B43_SHM_SHARED, 0x088);
return val;
}
static void b43_jssi_write(struct b43_wldev *dev, u32 jssi)
{
b43_shm_write16(dev, B43_SHM_SHARED, 0x088, (jssi & 0x0000FFFF));
b43_shm_write16(dev, B43_SHM_SHARED, 0x08A, (jssi & 0xFFFF0000) >> 16);
}
static void b43_generate_noise_sample(struct b43_wldev *dev)
{
b43_jssi_write(dev, 0x7F7F7F7F);
b43_write32(dev, B43_MMIO_MACCMD,
b43_read32(dev, B43_MMIO_MACCMD) | B43_MACCMD_BGNOISE);
}
static void b43_calculate_link_quality(struct b43_wldev *dev)
{
/* Top half of Link Quality calculation. */
if (dev->phy.type != B43_PHYTYPE_G)
return;
if (dev->noisecalc.calculation_running)
return;
dev->noisecalc.calculation_running = true;
dev->noisecalc.nr_samples = 0;
b43_generate_noise_sample(dev);
}
static void handle_irq_noise(struct b43_wldev *dev)
{
struct b43_phy_g *phy = dev->phy.g;
u16 tmp;
u8 noise[4];
u8 i, j;
s32 average;
/* Bottom half of Link Quality calculation. */
if (dev->phy.type != B43_PHYTYPE_G)
return;
/* Possible race condition: It might be possible that the user
* changed to a different channel in the meantime since we
* started the calculation. We ignore that fact, since it's
* not really that much of a problem. The background noise is
* an estimation only anyway. Slightly wrong results will get damped
* by the averaging of the 8 sample rounds. Additionally the
* value is shortlived. So it will be replaced by the next noise
* calculation round soon. */
B43_WARN_ON(!dev->noisecalc.calculation_running);
*((__le32 *)noise) = cpu_to_le32(b43_jssi_read(dev));
if (noise[0] == 0x7F || noise[1] == 0x7F ||
noise[2] == 0x7F || noise[3] == 0x7F)
goto generate_new;
/* Get the noise samples. */
B43_WARN_ON(dev->noisecalc.nr_samples >= 8);
i = dev->noisecalc.nr_samples;
noise[0] = clamp_val(noise[0], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
noise[1] = clamp_val(noise[1], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
noise[2] = clamp_val(noise[2], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
noise[3] = clamp_val(noise[3], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
dev->noisecalc.samples[i][0] = phy->nrssi_lt[noise[0]];
dev->noisecalc.samples[i][1] = phy->nrssi_lt[noise[1]];
dev->noisecalc.samples[i][2] = phy->nrssi_lt[noise[2]];
dev->noisecalc.samples[i][3] = phy->nrssi_lt[noise[3]];
dev->noisecalc.nr_samples++;
if (dev->noisecalc.nr_samples == 8) {
/* Calculate the Link Quality by the noise samples. */
average = 0;
for (i = 0; i < 8; i++) {
for (j = 0; j < 4; j++)
average += dev->noisecalc.samples[i][j];
}
average /= (8 * 4);
average *= 125;
average += 64;
average /= 128;
tmp = b43_shm_read16(dev, B43_SHM_SHARED, 0x40C);
tmp = (tmp / 128) & 0x1F;
if (tmp >= 8)
average += 2;
else
average -= 25;
if (tmp == 8)
average -= 72;
else
average -= 48;
dev->stats.link_noise = average;
dev->noisecalc.calculation_running = false;
return;
}
generate_new:
b43_generate_noise_sample(dev);
}
static void handle_irq_tbtt_indication(struct b43_wldev *dev)
{
if (b43_is_mode(dev->wl, NL80211_IFTYPE_AP)) {
///TODO: PS TBTT
} else {
if (1 /*FIXME: the last PSpoll frame was sent successfully */ )
b43_power_saving_ctl_bits(dev, 0);
}
if (b43_is_mode(dev->wl, NL80211_IFTYPE_ADHOC))
dev->dfq_valid = true;
}
static void handle_irq_atim_end(struct b43_wldev *dev)
{
if (dev->dfq_valid) {
b43_write32(dev, B43_MMIO_MACCMD,
b43_read32(dev, B43_MMIO_MACCMD)
| B43_MACCMD_DFQ_VALID);
dev->dfq_valid = false;
}
}
static void handle_irq_pmq(struct b43_wldev *dev)
{
u32 tmp;
//TODO: AP mode.
while (1) {
tmp = b43_read32(dev, B43_MMIO_PS_STATUS);
if (!(tmp & 0x00000008))
break;
}
/* 16bit write is odd, but correct. */
b43_write16(dev, B43_MMIO_PS_STATUS, 0x0002);
}
static void b43_write_template_common(struct b43_wldev *dev,
const u8 *data, u16 size,
u16 ram_offset,
u16 shm_size_offset, u8 rate)
{
u32 i, tmp;
struct b43_plcp_hdr4 plcp;
plcp.data = 0;
b43_generate_plcp_hdr(&plcp, size + FCS_LEN, rate);
b43_ram_write(dev, ram_offset, le32_to_cpu(plcp.data));
ram_offset += sizeof(u32);
/* The PLCP is 6 bytes long, but we only wrote 4 bytes, yet.
* So leave the first two bytes of the next write blank.
*/
tmp = (u32) (data[0]) << 16;
tmp |= (u32) (data[1]) << 24;
b43_ram_write(dev, ram_offset, tmp);
ram_offset += sizeof(u32);
for (i = 2; i < size; i += sizeof(u32)) {
tmp = (u32) (data[i + 0]);
if (i + 1 < size)
tmp |= (u32) (data[i + 1]) << 8;
if (i + 2 < size)
tmp |= (u32) (data[i + 2]) << 16;
if (i + 3 < size)
tmp |= (u32) (data[i + 3]) << 24;
b43_ram_write(dev, ram_offset + i - 2, tmp);
}
b43_shm_write16(dev, B43_SHM_SHARED, shm_size_offset,
size + sizeof(struct b43_plcp_hdr6));
}
/* Check if the use of the antenna that ieee80211 told us to
* use is possible. This will fall back to DEFAULT.
* "antenna_nr" is the antenna identifier we got from ieee80211. */
u8 b43_ieee80211_antenna_sanitize(struct b43_wldev *dev,
u8 antenna_nr)
{
u8 antenna_mask;
if (antenna_nr == 0) {
/* Zero means "use default antenna". That's always OK. */
return 0;
}
/* Get the mask of available antennas. */
if (dev->phy.gmode)
antenna_mask = dev->dev->bus_sprom->ant_available_bg;
else
antenna_mask = dev->dev->bus_sprom->ant_available_a;
if (!(antenna_mask & (1 << (antenna_nr - 1)))) {
/* This antenna is not available. Fall back to default. */
return 0;
}
return antenna_nr;
}
/* Convert a b43 antenna number value to the PHY TX control value. */
static u16 b43_antenna_to_phyctl(int antenna)
{
switch (antenna) {
case B43_ANTENNA0:
return B43_TXH_PHY_ANT0;
case B43_ANTENNA1:
return B43_TXH_PHY_ANT1;
case B43_ANTENNA2:
return B43_TXH_PHY_ANT2;
case B43_ANTENNA3:
return B43_TXH_PHY_ANT3;
case B43_ANTENNA_AUTO0:
case B43_ANTENNA_AUTO1:
return B43_TXH_PHY_ANT01AUTO;
}
B43_WARN_ON(1);
return 0;
}
static void b43_write_beacon_template(struct b43_wldev *dev,
u16 ram_offset,
u16 shm_size_offset)
{
unsigned int i, len, variable_len;
const struct ieee80211_mgmt *bcn;
const u8 *ie;
bool tim_found = false;
unsigned int rate;
u16 ctl;
int antenna;
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(dev->wl->current_beacon);
bcn = (const struct ieee80211_mgmt *)(dev->wl->current_beacon->data);
len = min((size_t) dev->wl->current_beacon->len,
0x200 - sizeof(struct b43_plcp_hdr6));
rate = ieee80211_get_tx_rate(dev->wl->hw, info)->hw_value;
b43_write_template_common(dev, (const u8 *)bcn,
len, ram_offset, shm_size_offset, rate);
/* Write the PHY TX control parameters. */
antenna = B43_ANTENNA_DEFAULT;
antenna = b43_antenna_to_phyctl(antenna);
ctl = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_BEACPHYCTL);
/* We can't send beacons with short preamble. Would get PHY errors. */
ctl &= ~B43_TXH_PHY_SHORTPRMBL;
ctl &= ~B43_TXH_PHY_ANT;
ctl &= ~B43_TXH_PHY_ENC;
ctl |= antenna;
if (b43_is_cck_rate(rate))
ctl |= B43_TXH_PHY_ENC_CCK;
else
ctl |= B43_TXH_PHY_ENC_OFDM;
b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_BEACPHYCTL, ctl);
/* Find the position of the TIM and the DTIM_period value
* and write them to SHM. */
ie = bcn->u.beacon.variable;
variable_len = len - offsetof(struct ieee80211_mgmt, u.beacon.variable);
for (i = 0; i < variable_len - 2; ) {
uint8_t ie_id, ie_len;
ie_id = ie[i];
ie_len = ie[i + 1];
if (ie_id == 5) {
u16 tim_position;
u16 dtim_period;
/* This is the TIM Information Element */
/* Check whether the ie_len is in the beacon data range. */
if (variable_len < ie_len + 2 + i)
break;
/* A valid TIM is at least 4 bytes long. */
if (ie_len < 4)
break;
tim_found = true;
tim_position = sizeof(struct b43_plcp_hdr6);
tim_position += offsetof(struct ieee80211_mgmt, u.beacon.variable);
tim_position += i;
dtim_period = ie[i + 3];
b43_shm_write16(dev, B43_SHM_SHARED,
B43_SHM_SH_TIMBPOS, tim_position);
b43_shm_write16(dev, B43_SHM_SHARED,
B43_SHM_SH_DTIMPER, dtim_period);
break;
}
i += ie_len + 2;
}
if (!tim_found) {
/*
* If ucode wants to modify TIM do it behind the beacon, this
* will happen, for example, when doing mesh networking.
*/
b43_shm_write16(dev, B43_SHM_SHARED,
B43_SHM_SH_TIMBPOS,
len + sizeof(struct b43_plcp_hdr6));
b43_shm_write16(dev, B43_SHM_SHARED,
B43_SHM_SH_DTIMPER, 0);
}
b43dbg(dev->wl, "Updated beacon template at 0x%x\n", ram_offset);
}
static void b43_upload_beacon0(struct b43_wldev *dev)
{
struct b43_wl *wl = dev->wl;
if (wl->beacon0_uploaded)
return;
b43_write_beacon_template(dev, 0x68, 0x18);
wl->beacon0_uploaded = true;
}
static void b43_upload_beacon1(struct b43_wldev *dev)
{
struct b43_wl *wl = dev->wl;
if (wl->beacon1_uploaded)
return;
b43_write_beacon_template(dev, 0x468, 0x1A);
wl->beacon1_uploaded = true;
}
static void handle_irq_beacon(struct b43_wldev *dev)
{
struct b43_wl *wl = dev->wl;
u32 cmd, beacon0_valid, beacon1_valid;
if (!b43_is_mode(wl, NL80211_IFTYPE_AP) &&
!b43_is_mode(wl, NL80211_IFTYPE_MESH_POINT) &&
!b43_is_mode(wl, NL80211_IFTYPE_ADHOC))
return;
/* This is the bottom half of the asynchronous beacon update. */
/* Ignore interrupt in the future. */
dev->irq_mask &= ~B43_IRQ_BEACON;
cmd = b43_read32(dev, B43_MMIO_MACCMD);
beacon0_valid = (cmd & B43_MACCMD_BEACON0_VALID);
beacon1_valid = (cmd & B43_MACCMD_BEACON1_VALID);
/* Schedule interrupt manually, if busy. */
if (beacon0_valid && beacon1_valid) {
b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, B43_IRQ_BEACON);
dev->irq_mask |= B43_IRQ_BEACON;
return;
}
if (unlikely(wl->beacon_templates_virgin)) {
/* We never uploaded a beacon before.
* Upload both templates now, but only mark one valid. */
wl->beacon_templates_virgin = false;
b43_upload_beacon0(dev);
b43_upload_beacon1(dev);
cmd = b43_read32(dev, B43_MMIO_MACCMD);
cmd |= B43_MACCMD_BEACON0_VALID;
b43_write32(dev, B43_MMIO_MACCMD, cmd);
} else {
if (!beacon0_valid) {
b43_upload_beacon0(dev);
cmd = b43_read32(dev, B43_MMIO_MACCMD);
cmd |= B43_MACCMD_BEACON0_VALID;
b43_write32(dev, B43_MMIO_MACCMD, cmd);
} else if (!beacon1_valid) {
b43_upload_beacon1(dev);
cmd = b43_read32(dev, B43_MMIO_MACCMD);
cmd |= B43_MACCMD_BEACON1_VALID;
b43_write32(dev, B43_MMIO_MACCMD, cmd);
}
}
}
static void b43_do_beacon_update_trigger_work(struct b43_wldev *dev)
{
u32 old_irq_mask = dev->irq_mask;
/* update beacon right away or defer to irq */
handle_irq_beacon(dev);
if (old_irq_mask != dev->irq_mask) {
/* The handler updated the IRQ mask. */
B43_WARN_ON(!dev->irq_mask);
if (b43_read32(dev, B43_MMIO_GEN_IRQ_MASK)) {
b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, dev->irq_mask);
} else {
/* Device interrupts are currently disabled. That means
* we just ran the hardirq handler and scheduled the
* IRQ thread. The thread will write the IRQ mask when
* it finished, so there's nothing to do here. Writing
* the mask _here_ would incorrectly re-enable IRQs. */
}
}
}
static void b43_beacon_update_trigger_work(struct work_struct *work)
{
struct b43_wl *wl = container_of(work, struct b43_wl,
beacon_update_trigger);
struct b43_wldev *dev;
mutex_lock(&wl->mutex);
dev = wl->current_dev;
if (likely(dev && (b43_status(dev) >= B43_STAT_INITIALIZED))) {
if (b43_bus_host_is_sdio(dev->dev)) {
/* wl->mutex is enough. */
b43_do_beacon_update_trigger_work(dev);
mmiowb();
} else {
spin_lock_irq(&wl->hardirq_lock);
b43_do_beacon_update_trigger_work(dev);
mmiowb();
spin_unlock_irq(&wl->hardirq_lock);
}
}
mutex_unlock(&wl->mutex);
}
/* Asynchronously update the packet templates in template RAM.
* Locking: Requires wl->mutex to be locked. */
static void b43_update_templates(struct b43_wl *wl)
{
struct sk_buff *beacon;
/* This is the top half of the ansynchronous beacon update.
* The bottom half is the beacon IRQ.
* Beacon update must be asynchronous to avoid sending an
* invalid beacon. This can happen for example, if the firmware
* transmits a beacon while we are updating it. */
/* We could modify the existing beacon and set the aid bit in
* the TIM field, but that would probably require resizing and
* moving of data within the beacon template.
* Simply request a new beacon and let mac80211 do the hard work. */
beacon = ieee80211_beacon_get(wl->hw, wl->vif);
if (unlikely(!beacon))
return;
if (wl->current_beacon)
dev_kfree_skb_any(wl->current_beacon);
wl->current_beacon = beacon;
wl->beacon0_uploaded = false;
wl->beacon1_uploaded = false;
ieee80211_queue_work(wl->hw, &wl->beacon_update_trigger);
}
static void b43_set_beacon_int(struct b43_wldev *dev, u16 beacon_int)
{
b43_time_lock(dev);
if (dev->dev->core_rev >= 3) {
b43_write32(dev, B43_MMIO_TSF_CFP_REP, (beacon_int << 16));
b43_write32(dev, B43_MMIO_TSF_CFP_START, (beacon_int << 10));
} else {
b43_write16(dev, 0x606, (beacon_int >> 6));
b43_write16(dev, 0x610, beacon_int);
}
b43_time_unlock(dev);
b43dbg(dev->wl, "Set beacon interval to %u\n", beacon_int);
}
static void b43_handle_firmware_panic(struct b43_wldev *dev)
{
u16 reason;
/* Read the register that contains the reason code for the panic. */
reason = b43_shm_read16(dev, B43_SHM_SCRATCH, B43_FWPANIC_REASON_REG);
b43err(dev->wl, "Whoopsy, firmware panic! Reason: %u\n", reason);
switch (reason) {
default:
b43dbg(dev->wl, "The panic reason is unknown.\n");
/* fallthrough */
case B43_FWPANIC_DIE:
/* Do not restart the controller or firmware.
* The device is nonfunctional from now on.
* Restarting would result in this panic to trigger again,
* so we avoid that recursion. */
break;
case B43_FWPANIC_RESTART:
b43_controller_restart(dev, "Microcode panic");
break;
}
}
static void handle_irq_ucode_debug(struct b43_wldev *dev)
{
unsigned int i, cnt;
u16 reason, marker_id, marker_line;
__le16 *buf;
/* The proprietary firmware doesn't have this IRQ. */
if (!dev->fw.opensource)
return;
/* Read the register that contains the reason code for this IRQ. */
reason = b43_shm_read16(dev, B43_SHM_SCRATCH, B43_DEBUGIRQ_REASON_REG);
switch (reason) {
case B43_DEBUGIRQ_PANIC:
b43_handle_firmware_panic(dev);
break;
case B43_DEBUGIRQ_DUMP_SHM:
if (!B43_DEBUG)
break; /* Only with driver debugging enabled. */
buf = kmalloc(4096, GFP_ATOMIC);
if (!buf) {
b43dbg(dev->wl, "SHM-dump: Failed to allocate memory\n");
goto out;
}
for (i = 0; i < 4096; i += 2) {
u16 tmp = b43_shm_read16(dev, B43_SHM_SHARED, i);
buf[i / 2] = cpu_to_le16(tmp);
}
b43info(dev->wl, "Shared memory dump:\n");
print_hex_dump(KERN_INFO, "", DUMP_PREFIX_OFFSET,
16, 2, buf, 4096, 1);
kfree(buf);
break;
case B43_DEBUGIRQ_DUMP_REGS:
if (!B43_DEBUG)
break; /* Only with driver debugging enabled. */
b43info(dev->wl, "Microcode register dump:\n");
for (i = 0, cnt = 0; i < 64; i++) {
u16 tmp = b43_shm_read16(dev, B43_SHM_SCRATCH, i);
if (cnt == 0)
printk(KERN_INFO);
printk("r%02u: 0x%04X ", i, tmp);
cnt++;
if (cnt == 6) {
printk("\n");
cnt = 0;
}
}
printk("\n");
break;
case B43_DEBUGIRQ_MARKER:
if (!B43_DEBUG)
break; /* Only with driver debugging enabled. */
marker_id = b43_shm_read16(dev, B43_SHM_SCRATCH,
B43_MARKER_ID_REG);
marker_line = b43_shm_read16(dev, B43_SHM_SCRATCH,
B43_MARKER_LINE_REG);
b43info(dev->wl, "The firmware just executed the MARKER(%u) "
"at line number %u\n",
marker_id, marker_line);
break;
default:
b43dbg(dev->wl, "Debug-IRQ triggered for unknown reason: %u\n",
reason);
}
out:
/* Acknowledge the debug-IRQ, so the firmware can continue. */
b43_shm_write16(dev, B43_SHM_SCRATCH,
B43_DEBUGIRQ_REASON_REG, B43_DEBUGIRQ_ACK);
}
static void b43_do_interrupt_thread(struct b43_wldev *dev)
{
u32 reason;
u32 dma_reason[ARRAY_SIZE(dev->dma_reason)];
u32 merged_dma_reason = 0;
int i;
if (unlikely(b43_status(dev) != B43_STAT_STARTED))
return;
reason = dev->irq_reason;
for (i = 0; i < ARRAY_SIZE(dma_reason); i++) {
dma_reason[i] = dev->dma_reason[i];
merged_dma_reason |= dma_reason[i];
}
if (unlikely(reason & B43_IRQ_MAC_TXERR))
b43err(dev->wl, "MAC transmission error\n");
if (unlikely(reason & B43_IRQ_PHY_TXERR)) {
b43err(dev->wl, "PHY transmission error\n");
rmb();
if (unlikely(atomic_dec_and_test(&dev->phy.txerr_cnt))) {
atomic_set(&dev->phy.txerr_cnt,
B43_PHY_TX_BADNESS_LIMIT);
b43err(dev->wl, "Too many PHY TX errors, "
"restarting the controller\n");
b43_controller_restart(dev, "PHY TX errors");
}
}
if (unlikely(merged_dma_reason & (B43_DMAIRQ_FATALMASK |
B43_DMAIRQ_NONFATALMASK))) {
if (merged_dma_reason & B43_DMAIRQ_FATALMASK) {
b43err(dev->wl, "Fatal DMA error: "
"0x%08X, 0x%08X, 0x%08X, "
"0x%08X, 0x%08X, 0x%08X\n",
dma_reason[0], dma_reason[1],
dma_reason[2], dma_reason[3],
dma_reason[4], dma_reason[5]);
b43err(dev->wl, "This device does not support DMA "
"on your system. It will now be switched to PIO.\n");
/* Fall back to PIO transfers if we get fatal DMA errors! */
dev->use_pio = true;
b43_controller_restart(dev, "DMA error");
return;
}
if (merged_dma_reason & B43_DMAIRQ_NONFATALMASK) {
b43err(dev->wl, "DMA error: "
"0x%08X, 0x%08X, 0x%08X, "
"0x%08X, 0x%08X, 0x%08X\n",
dma_reason[0], dma_reason[1],
dma_reason[2], dma_reason[3],
dma_reason[4], dma_reason[5]);
}
}
if (unlikely(reason & B43_IRQ_UCODE_DEBUG))
handle_irq_ucode_debug(dev);
if (reason & B43_IRQ_TBTT_INDI)
handle_irq_tbtt_indication(dev);
if (reason & B43_IRQ_ATIM_END)
handle_irq_atim_end(dev);
if (reason & B43_IRQ_BEACON)
handle_irq_beacon(dev);
if (reason & B43_IRQ_PMQ)
handle_irq_pmq(dev);
if (reason & B43_IRQ_TXFIFO_FLUSH_OK)
;/* TODO */
if (reason & B43_IRQ_NOISESAMPLE_OK)
handle_irq_noise(dev);
/* Check the DMA reason registers for received data. */
if (dma_reason[0] & B43_DMAIRQ_RX_DONE) {
if (b43_using_pio_transfers(dev))
b43_pio_rx(dev->pio.rx_queue);
else
b43_dma_rx(dev->dma.rx_ring);
}
B43_WARN_ON(dma_reason[1] & B43_DMAIRQ_RX_DONE);
B43_WARN_ON(dma_reason[2] & B43_DMAIRQ_RX_DONE);
B43_WARN_ON(dma_reason[3] & B43_DMAIRQ_RX_DONE);
B43_WARN_ON(dma_reason[4] & B43_DMAIRQ_RX_DONE);
B43_WARN_ON(dma_reason[5] & B43_DMAIRQ_RX_DONE);
if (reason & B43_IRQ_TX_OK)
handle_irq_transmit_status(dev);
/* Re-enable interrupts on the device by restoring the current interrupt mask. */
b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, dev->irq_mask);
#if B43_DEBUG
if (b43_debug(dev, B43_DBG_VERBOSESTATS)) {
dev->irq_count++;
for (i = 0; i < ARRAY_SIZE(dev->irq_bit_count); i++) {
if (reason & (1 << i))
dev->irq_bit_count[i]++;
}
}
#endif
}
/* Interrupt thread handler. Handles device interrupts in thread context. */
static irqreturn_t b43_interrupt_thread_handler(int irq, void *dev_id)
{
struct b43_wldev *dev = dev_id;
mutex_lock(&dev->wl->mutex);
b43_do_interrupt_thread(dev);
mmiowb();
mutex_unlock(&dev->wl->mutex);
return IRQ_HANDLED;
}
static irqreturn_t b43_do_interrupt(struct b43_wldev *dev)
{
u32 reason;
/* This code runs under wl->hardirq_lock, but _only_ on non-SDIO busses.
* On SDIO, this runs under wl->mutex. */
reason = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
if (reason == 0xffffffff) /* shared IRQ */
return IRQ_NONE;
reason &= dev->irq_mask;
if (!reason)
return IRQ_NONE;
dev->dma_reason[0] = b43_read32(dev, B43_MMIO_DMA0_REASON)
& 0x0001DC00;
dev->dma_reason[1] = b43_read32(dev, B43_MMIO_DMA1_REASON)
& 0x0000DC00;
dev->dma_reason[2] = b43_read32(dev, B43_MMIO_DMA2_REASON)
& 0x0000DC00;
dev->dma_reason[3] = b43_read32(dev, B43_MMIO_DMA3_REASON)
& 0x0001DC00;
dev->dma_reason[4] = b43_read32(dev, B43_MMIO_DMA4_REASON)
& 0x0000DC00;
/* Unused ring
dev->dma_reason[5] = b43_read32(dev, B43_MMIO_DMA5_REASON)
& 0x0000DC00;
*/
/* ACK the interrupt. */
b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, reason);
b43_write32(dev, B43_MMIO_DMA0_REASON, dev->dma_reason[0]);
b43_write32(dev, B43_MMIO_DMA1_REASON, dev->dma_reason[1]);
b43_write32(dev, B43_MMIO_DMA2_REASON, dev->dma_reason[2]);
b43_write32(dev, B43_MMIO_DMA3_REASON, dev->dma_reason[3]);
b43_write32(dev, B43_MMIO_DMA4_REASON, dev->dma_reason[4]);
/* Unused ring
b43_write32(dev, B43_MMIO_DMA5_REASON, dev->dma_reason[5]);
*/
/* Disable IRQs on the device. The IRQ thread handler will re-enable them. */
b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, 0);
/* Save the reason bitmasks for the IRQ thread handler. */
dev->irq_reason = reason;
return IRQ_WAKE_THREAD;
}
/* Interrupt handler top-half. This runs with interrupts disabled. */
static irqreturn_t b43_interrupt_handler(int irq, void *dev_id)
{
struct b43_wldev *dev = dev_id;
irqreturn_t ret;
if (unlikely(b43_status(dev) < B43_STAT_STARTED))
return IRQ_NONE;
spin_lock(&dev->wl->hardirq_lock);
ret = b43_do_interrupt(dev);
mmiowb();
spin_unlock(&dev->wl->hardirq_lock);
return ret;
}
/* SDIO interrupt handler. This runs in process context. */
static void b43_sdio_interrupt_handler(struct b43_wldev *dev)
{
struct b43_wl *wl = dev->wl;
irqreturn_t ret;
mutex_lock(&wl->mutex);
ret = b43_do_interrupt(dev);
if (ret == IRQ_WAKE_THREAD)
b43_do_interrupt_thread(dev);
mutex_unlock(&wl->mutex);
}
void b43_do_release_fw(struct b43_firmware_file *fw)
{
release_firmware(fw->data);
fw->data = NULL;
fw->filename = NULL;
}
static void b43_release_firmware(struct b43_wldev *dev)
{
b43_do_release_fw(&dev->fw.ucode);
b43_do_release_fw(&dev->fw.pcm);
b43_do_release_fw(&dev->fw.initvals);
b43_do_release_fw(&dev->fw.initvals_band);
}
static void b43_print_fw_helptext(struct b43_wl *wl, bool error)
{
const char text[] =
"You must go to " \
"http://wireless.kernel.org/en/users/Drivers/b43#devicefirmware " \
"and download the correct firmware for this driver version. " \
"Please carefully read all instructions on this website.\n";
if (error)
b43err(wl, text);
else
b43warn(wl, text);
}
int b43_do_request_fw(struct b43_request_fw_context *ctx,
const char *name,
struct b43_firmware_file *fw)
{
const struct firmware *blob;
struct b43_fw_header *hdr;
u32 size;
int err;
if (!name) {
/* Don't fetch anything. Free possibly cached firmware. */
/* FIXME: We should probably keep it anyway, to save some headache
* on suspend/resume with multiband devices. */
b43_do_release_fw(fw);
return 0;
}
if (fw->filename) {
if ((fw->type == ctx->req_type) &&
(strcmp(fw->filename, name) == 0))
return 0; /* Already have this fw. */
/* Free the cached firmware first. */
/* FIXME: We should probably do this later after we successfully
* got the new fw. This could reduce headache with multiband devices.
* We could also redesign this to cache the firmware for all possible
* bands all the time. */
b43_do_release_fw(fw);
}
switch (ctx->req_type) {
case B43_FWTYPE_PROPRIETARY:
snprintf(ctx->fwname, sizeof(ctx->fwname),
"b43%s/%s.fw",
modparam_fwpostfix, name);
break;
case B43_FWTYPE_OPENSOURCE:
snprintf(ctx->fwname, sizeof(ctx->fwname),
"b43-open%s/%s.fw",
modparam_fwpostfix, name);
break;
default:
B43_WARN_ON(1);
return -ENOSYS;
}
err = request_firmware(&blob, ctx->fwname, ctx->dev->dev->dev);
if (err == -ENOENT) {
snprintf(ctx->errors[ctx->req_type],
sizeof(ctx->errors[ctx->req_type]),
"Firmware file \"%s\" not found\n", ctx->fwname);
return err;
} else if (err) {
snprintf(ctx->errors[ctx->req_type],
sizeof(ctx->errors[ctx->req_type]),
"Firmware file \"%s\" request failed (err=%d)\n",
ctx->fwname, err);
return err;
}
if (blob->size < sizeof(struct b43_fw_header))
goto err_format;
hdr = (struct b43_fw_header *)(blob->data);
switch (hdr->type) {
case B43_FW_TYPE_UCODE:
case B43_FW_TYPE_PCM:
size = be32_to_cpu(hdr->size);
if (size != blob->size - sizeof(struct b43_fw_header))
goto err_format;
/* fallthrough */
case B43_FW_TYPE_IV:
if (hdr->ver != 1)
goto err_format;
break;
default:
goto err_format;
}
fw->data = blob;
fw->filename = name;
fw->type = ctx->req_type;
return 0;
err_format:
snprintf(ctx->errors[ctx->req_type],
sizeof(ctx->errors[ctx->req_type]),
"Firmware file \"%s\" format error.\n", ctx->fwname);
release_firmware(blob);
return -EPROTO;
}
static int b43_try_request_fw(struct b43_request_fw_context *ctx)
{
struct b43_wldev *dev = ctx->dev;
struct b43_firmware *fw = &ctx->dev->fw;
const u8 rev = ctx->dev->dev->core_rev;
const char *filename;
u32 tmshigh;
int err;
/* Files for HT and LCN were found by trying one by one */
/* Get microcode */
if ((rev >= 5) && (rev <= 10)) {
filename = "ucode5";
} else if ((rev >= 11) && (rev <= 12)) {
filename = "ucode11";
} else if (rev == 13) {
filename = "ucode13";
} else if (rev == 14) {
filename = "ucode14";
} else if (rev == 15) {
filename = "ucode15";
} else {
switch (dev->phy.type) {
case B43_PHYTYPE_N:
if (rev >= 16)
filename = "ucode16_mimo";
else
goto err_no_ucode;
break;
case B43_PHYTYPE_HT:
if (rev == 29)
filename = "ucode29_mimo";
else
goto err_no_ucode;
break;
case B43_PHYTYPE_LCN:
if (rev == 24)
filename = "ucode24_mimo";
else
goto err_no_ucode;
break;
default:
goto err_no_ucode;
}
}
err = b43_do_request_fw(ctx, filename, &fw->ucode);
if (err)
goto err_load;
/* Get PCM code */
if ((rev >= 5) && (rev <= 10))
filename = "pcm5";
else if (rev >= 11)
filename = NULL;
else
goto err_no_pcm;
fw->pcm_request_failed = false;
err = b43_do_request_fw(ctx, filename, &fw->pcm);
if (err == -ENOENT) {
/* We did not find a PCM file? Not fatal, but
* core rev <= 10 must do without hwcrypto then. */
fw->pcm_request_failed = true;
} else if (err)
goto err_load;
/* Get initvals */
switch (dev->phy.type) {
case B43_PHYTYPE_A:
if ((rev >= 5) && (rev <= 10)) {
tmshigh = ssb_read32(dev->dev->sdev, SSB_TMSHIGH);
if (tmshigh & B43_TMSHIGH_HAVE_2GHZ_PHY)
filename = "a0g1initvals5";
else
filename = "a0g0initvals5";
} else
goto err_no_initvals;
break;
case B43_PHYTYPE_G:
if ((rev >= 5) && (rev <= 10))
filename = "b0g0initvals5";
else if (rev >= 13)
filename = "b0g0initvals13";
else
goto err_no_initvals;
break;
case B43_PHYTYPE_N:
if (rev >= 16)
filename = "n0initvals16";
else if ((rev >= 11) && (rev <= 12))
filename = "n0initvals11";
else
goto err_no_initvals;
break;
case B43_PHYTYPE_LP:
if (rev == 13)
filename = "lp0initvals13";
else if (rev == 14)
filename = "lp0initvals14";
else if (rev >= 15)
filename = "lp0initvals15";
else
goto err_no_initvals;
break;
case B43_PHYTYPE_HT:
if (rev == 29)
filename = "ht0initvals29";
else
goto err_no_initvals;
break;
case B43_PHYTYPE_LCN:
if (rev == 24)
filename = "lcn0initvals24";
else
goto err_no_initvals;
break;
default:
goto err_no_initvals;
}
err = b43_do_request_fw(ctx, filename, &fw->initvals);
if (err)
goto err_load;
/* Get bandswitch initvals */
switch (dev->phy.type) {
case B43_PHYTYPE_A:
if ((rev >= 5) && (rev <= 10)) {
tmshigh = ssb_read32(dev->dev->sdev, SSB_TMSHIGH);
if (tmshigh & B43_TMSHIGH_HAVE_2GHZ_PHY)
filename = "a0g1bsinitvals5";
else
filename = "a0g0bsinitvals5";
} else if (rev >= 11)
filename = NULL;
else
goto err_no_initvals;
break;
case B43_PHYTYPE_G:
if ((rev >= 5) && (rev <= 10))
filename = "b0g0bsinitvals5";
else if (rev >= 11)
filename = NULL;
else
goto err_no_initvals;
break;
case B43_PHYTYPE_N:
if (rev >= 16)
filename = "n0bsinitvals16";
else if ((rev >= 11) && (rev <= 12))
filename = "n0bsinitvals11";
else
goto err_no_initvals;
break;
case B43_PHYTYPE_LP:
if (rev == 13)
filename = "lp0bsinitvals13";
else if (rev == 14)
filename = "lp0bsinitvals14";
else if (rev >= 15)
filename = "lp0bsinitvals15";
else
goto err_no_initvals;
break;
case B43_PHYTYPE_HT:
if (rev == 29)
filename = "ht0bsinitvals29";
else
goto err_no_initvals;
break;
case B43_PHYTYPE_LCN:
if (rev == 24)
filename = "lcn0bsinitvals24";
else
goto err_no_initvals;
break;
default:
goto err_no_initvals;
}
err = b43_do_request_fw(ctx, filename, &fw->initvals_band);
if (err)
goto err_load;
fw->opensource = (ctx->req_type == B43_FWTYPE_OPENSOURCE);
return 0;
err_no_ucode:
err = ctx->fatal_failure = -EOPNOTSUPP;
b43err(dev->wl, "The driver does not know which firmware (ucode) "
"is required for your device (wl-core rev %u)\n", rev);
goto error;
err_no_pcm:
err = ctx->fatal_failure = -EOPNOTSUPP;
b43err(dev->wl, "The driver does not know which firmware (PCM) "
"is required for your device (wl-core rev %u)\n", rev);
goto error;
err_no_initvals:
err = ctx->fatal_failure = -EOPNOTSUPP;
b43err(dev->wl, "The driver does not know which firmware (initvals) "
"is required for your device (wl-core rev %u)\n", rev);
goto error;
err_load:
/* We failed to load this firmware image. The error message
* already is in ctx->errors. Return and let our caller decide
* what to do. */
goto error;
error:
b43_release_firmware(dev);
return err;
}
static int b43_one_core_attach(struct b43_bus_dev *dev, struct b43_wl *wl);
static void b43_one_core_detach(struct b43_bus_dev *dev);
static void b43_request_firmware(struct work_struct *work)
{
struct b43_wl *wl = container_of(work,
struct b43_wl, firmware_load);
struct b43_wldev *dev = wl->current_dev;
struct b43_request_fw_context *ctx;
unsigned int i;
int err;
const char *errmsg;
ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
if (!ctx)
return;
ctx->dev = dev;
ctx->req_type = B43_FWTYPE_PROPRIETARY;
err = b43_try_request_fw(ctx);
if (!err)
goto start_ieee80211; /* Successfully loaded it. */
/* Was fw version known? */
if (ctx->fatal_failure)
goto out;
/* proprietary fw not found, try open source */
ctx->req_type = B43_FWTYPE_OPENSOURCE;
err = b43_try_request_fw(ctx);
if (!err)
goto start_ieee80211; /* Successfully loaded it. */
if(ctx->fatal_failure)
goto out;
/* Could not find a usable firmware. Print the errors. */
for (i = 0; i < B43_NR_FWTYPES; i++) {
errmsg = ctx->errors[i];
if (strlen(errmsg))
b43err(dev->wl, errmsg);
}
b43_print_fw_helptext(dev->wl, 1);
goto out;
start_ieee80211:
wl->hw->queues = B43_QOS_QUEUE_NUM;
if (!modparam_qos || dev->fw.opensource)
wl->hw->queues = 1;
err = ieee80211_register_hw(wl->hw);
if (err)
goto err_one_core_detach;
wl->hw_registred = true;
b43_leds_register(wl->current_dev);
goto out;
err_one_core_detach:
b43_one_core_detach(dev->dev);
out:
kfree(ctx);
}
static int b43_upload_microcode(struct b43_wldev *dev)
{
struct wiphy *wiphy = dev->wl->hw->wiphy;
const size_t hdr_len = sizeof(struct b43_fw_header);
const __be32 *data;
unsigned int i, len;
u16 fwrev, fwpatch, fwdate, fwtime;
u32 tmp, macctl;
int err = 0;
/* Jump the microcode PSM to offset 0 */
macctl = b43_read32(dev, B43_MMIO_MACCTL);
B43_WARN_ON(macctl & B43_MACCTL_PSM_RUN);
macctl |= B43_MACCTL_PSM_JMP0;
b43_write32(dev, B43_MMIO_MACCTL, macctl);
/* Zero out all microcode PSM registers and shared memory. */
for (i = 0; i < 64; i++)
b43_shm_write16(dev, B43_SHM_SCRATCH, i, 0);
for (i = 0; i < 4096; i += 2)
b43_shm_write16(dev, B43_SHM_SHARED, i, 0);
/* Upload Microcode. */
data = (__be32 *) (dev->fw.ucode.data->data + hdr_len);
len = (dev->fw.ucode.data->size - hdr_len) / sizeof(__be32);
b43_shm_control_word(dev, B43_SHM_UCODE | B43_SHM_AUTOINC_W, 0x0000);
for (i = 0; i < len; i++) {
b43_write32(dev, B43_MMIO_SHM_DATA, be32_to_cpu(data[i]));
udelay(10);
}
if (dev->fw.pcm.data) {
/* Upload PCM data. */
data = (__be32 *) (dev->fw.pcm.data->data + hdr_len);
len = (dev->fw.pcm.data->size - hdr_len) / sizeof(__be32);
b43_shm_control_word(dev, B43_SHM_HW, 0x01EA);
b43_write32(dev, B43_MMIO_SHM_DATA, 0x00004000);
/* No need for autoinc bit in SHM_HW */
b43_shm_control_word(dev, B43_SHM_HW, 0x01EB);
for (i = 0; i < len; i++) {
b43_write32(dev, B43_MMIO_SHM_DATA, be32_to_cpu(data[i]));
udelay(10);
}
}
b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, B43_IRQ_ALL);
/* Start the microcode PSM */
b43_maskset32(dev, B43_MMIO_MACCTL, ~B43_MACCTL_PSM_JMP0,
B43_MACCTL_PSM_RUN);
/* Wait for the microcode to load and respond */
i = 0;
while (1) {
tmp = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
if (tmp == B43_IRQ_MAC_SUSPENDED)
break;
i++;
if (i >= 20) {
b43err(dev->wl, "Microcode not responding\n");
b43_print_fw_helptext(dev->wl, 1);
err = -ENODEV;
goto error;
}
msleep(50);
}
b43_read32(dev, B43_MMIO_GEN_IRQ_REASON); /* dummy read */
/* Get and check the revisions. */
fwrev = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEREV);
fwpatch = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEPATCH);
fwdate = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEDATE);
fwtime = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODETIME);
if (fwrev <= 0x128) {
b43err(dev->wl, "YOUR FIRMWARE IS TOO OLD. Firmware from "
"binary drivers older than version 4.x is unsupported. "
"You must upgrade your firmware files.\n");
b43_print_fw_helptext(dev->wl, 1);
err = -EOPNOTSUPP;
goto error;
}
dev->fw.rev = fwrev;
dev->fw.patch = fwpatch;
if (dev->fw.rev >= 598)
dev->fw.hdr_format = B43_FW_HDR_598;
else if (dev->fw.rev >= 410)
dev->fw.hdr_format = B43_FW_HDR_410;
else
dev->fw.hdr_format = B43_FW_HDR_351;
WARN_ON(dev->fw.opensource != (fwdate == 0xFFFF));
dev->qos_enabled = dev->wl->hw->queues > 1;
/* Default to firmware/hardware crypto acceleration. */
dev->hwcrypto_enabled = true;
if (dev->fw.opensource) {
u16 fwcapa;
/* Patchlevel info is encoded in the "time" field. */
dev->fw.patch = fwtime;
b43info(dev->wl, "Loading OpenSource firmware version %u.%u\n",
dev->fw.rev, dev->fw.patch);
fwcapa = b43_fwcapa_read(dev);
if (!(fwcapa & B43_FWCAPA_HWCRYPTO) || dev->fw.pcm_request_failed) {
b43info(dev->wl, "Hardware crypto acceleration not supported by firmware\n");
/* Disable hardware crypto and fall back to software crypto. */
dev->hwcrypto_enabled = false;
}
/* adding QoS support should use an offline discovery mechanism */
WARN(fwcapa & B43_FWCAPA_QOS, "QoS in OpenFW not supported\n");
} else {
b43info(dev->wl, "Loading firmware version %u.%u "
"(20%.2i-%.2i-%.2i %.2i:%.2i:%.2i)\n",
fwrev, fwpatch,
(fwdate >> 12) & 0xF, (fwdate >> 8) & 0xF, fwdate & 0xFF,
(fwtime >> 11) & 0x1F, (fwtime >> 5) & 0x3F, fwtime & 0x1F);
if (dev->fw.pcm_request_failed) {
b43warn(dev->wl, "No \"pcm5.fw\" firmware file found. "
"Hardware accelerated cryptography is disabled.\n");
b43_print_fw_helptext(dev->wl, 0);
}
}
snprintf(wiphy->fw_version, sizeof(wiphy->fw_version), "%u.%u",
dev->fw.rev, dev->fw.patch);
wiphy->hw_version = dev->dev->core_id;
if (dev->fw.hdr_format == B43_FW_HDR_351) {
/* We're over the deadline, but we keep support for old fw
* until it turns out to be in major conflict with something new. */
b43warn(dev->wl, "You are using an old firmware image. "
"Support for old firmware will be removed soon "
"(official deadline was July 2008).\n");
b43_print_fw_helptext(dev->wl, 0);
}
return 0;
error:
/* Stop the microcode PSM. */
b43_maskset32(dev, B43_MMIO_MACCTL, ~B43_MACCTL_PSM_RUN,
B43_MACCTL_PSM_JMP0);
return err;
}
static int b43_write_initvals(struct b43_wldev *dev,
const struct b43_iv *ivals,
size_t count,
size_t array_size)
{
const struct b43_iv *iv;
u16 offset;
size_t i;
bool bit32;
BUILD_BUG_ON(sizeof(struct b43_iv) != 6);
iv = ivals;
for (i = 0; i < count; i++) {
if (array_size < sizeof(iv->offset_size))
goto err_format;
array_size -= sizeof(iv->offset_size);
offset = be16_to_cpu(iv->offset_size);
bit32 = !!(offset & B43_IV_32BIT);
offset &= B43_IV_OFFSET_MASK;
if (offset >= 0x1000)
goto err_format;
if (bit32) {
u32 value;
if (array_size < sizeof(iv->data.d32))
goto err_format;
array_size -= sizeof(iv->data.d32);
value = get_unaligned_be32(&iv->data.d32);
b43_write32(dev, offset, value);
iv = (const struct b43_iv *)((const uint8_t *)iv +
sizeof(__be16) +
sizeof(__be32));
} else {
u16 value;
if (array_size < sizeof(iv->data.d16))
goto err_format;
array_size -= sizeof(iv->data.d16);
value = be16_to_cpu(iv->data.d16);
b43_write16(dev, offset, value);
iv = (const struct b43_iv *)((const uint8_t *)iv +
sizeof(__be16) +
sizeof(__be16));
}
}
if (array_size)
goto err_format;
return 0;
err_format:
b43err(dev->wl, "Initial Values Firmware file-format error.\n");
b43_print_fw_helptext(dev->wl, 1);
return -EPROTO;
}
static int b43_upload_initvals(struct b43_wldev *dev)
{
const size_t hdr_len = sizeof(struct b43_fw_header);
const struct b43_fw_header *hdr;
struct b43_firmware *fw = &dev->fw;
const struct b43_iv *ivals;
size_t count;
int err;
hdr = (const struct b43_fw_header *)(fw->initvals.data->data);
ivals = (const struct b43_iv *)(fw->initvals.data->data + hdr_len);
count = be32_to_cpu(hdr->size);
err = b43_write_initvals(dev, ivals, count,
fw->initvals.data->size - hdr_len);
if (err)
goto out;
if (fw->initvals_band.data) {
hdr = (const struct b43_fw_header *)(fw->initvals_band.data->data);
ivals = (const struct b43_iv *)(fw->initvals_band.data->data + hdr_len);
count = be32_to_cpu(hdr->size);
err = b43_write_initvals(dev, ivals, count,
fw->initvals_band.data->size - hdr_len);
if (err)
goto out;
}
out:
return err;
}
/* Initialize the GPIOs
* http://bcm-specs.sipsolutions.net/GPIO
*/
static struct ssb_device *b43_ssb_gpio_dev(struct b43_wldev *dev)
{
struct ssb_bus *bus = dev->dev->sdev->bus;
#ifdef CONFIG_SSB_DRIVER_PCICORE
return (bus->chipco.dev ? bus->chipco.dev : bus->pcicore.dev);
#else
return bus->chipco.dev;
#endif
}
static int b43_gpio_init(struct b43_wldev *dev)
{
struct ssb_device *gpiodev;
u32 mask, set;
b43_maskset32(dev, B43_MMIO_MACCTL, ~B43_MACCTL_GPOUTSMSK, 0);
b43_maskset16(dev, B43_MMIO_GPIO_MASK, ~0, 0xF);
mask = 0x0000001F;
set = 0x0000000F;
if (dev->dev->chip_id == 0x4301) {
mask |= 0x0060;
set |= 0x0060;
} else if (dev->dev->chip_id == 0x5354) {
/* Don't allow overtaking buttons GPIOs */
set &= 0x2; /* 0x2 is LED GPIO on BCM5354 */
}
if (0 /* FIXME: conditional unknown */ ) {
b43_write16(dev, B43_MMIO_GPIO_MASK,
b43_read16(dev, B43_MMIO_GPIO_MASK)
| 0x0100);
/* BT Coexistance Input */
mask |= 0x0080;
set |= 0x0080;
/* BT Coexistance Out */
mask |= 0x0100;
set |= 0x0100;
}
if (dev->dev->bus_sprom->boardflags_lo & B43_BFL_PACTRL) {
/* PA is controlled by gpio 9, let ucode handle it */
b43_write16(dev, B43_MMIO_GPIO_MASK,
b43_read16(dev, B43_MMIO_GPIO_MASK)
| 0x0200);
mask |= 0x0200;
set |= 0x0200;
}
switch (dev->dev->bus_type) {
#ifdef CONFIG_B43_BCMA
case B43_BUS_BCMA:
bcma_cc_write32(&dev->dev->bdev->bus->drv_cc, BCMA_CC_GPIOCTL,
(bcma_cc_read32(&dev->dev->bdev->bus->drv_cc,
BCMA_CC_GPIOCTL) & ~mask) | set);
break;
#endif
#ifdef CONFIG_B43_SSB
case B43_BUS_SSB:
gpiodev = b43_ssb_gpio_dev(dev);
if (gpiodev)
ssb_write32(gpiodev, B43_GPIO_CONTROL,
(ssb_read32(gpiodev, B43_GPIO_CONTROL)
& ~mask) | set);
break;
#endif
}
return 0;
}
/* Turn off all GPIO stuff. Call this on module unload, for example. */
static void b43_gpio_cleanup(struct b43_wldev *dev)
{
struct ssb_device *gpiodev;
switch (dev->dev->bus_type) {
#ifdef CONFIG_B43_BCMA
case B43_BUS_BCMA:
bcma_cc_write32(&dev->dev->bdev->bus->drv_cc, BCMA_CC_GPIOCTL,
0);
break;
#endif
#ifdef CONFIG_B43_SSB
case B43_BUS_SSB:
gpiodev = b43_ssb_gpio_dev(dev);
if (gpiodev)
ssb_write32(gpiodev, B43_GPIO_CONTROL, 0);
break;
#endif
}
}
/* http://bcm-specs.sipsolutions.net/EnableMac */
void b43_mac_enable(struct b43_wldev *dev)
{
if (b43_debug(dev, B43_DBG_FIRMWARE)) {
u16 fwstate;
fwstate = b43_shm_read16(dev, B43_SHM_SHARED,
B43_SHM_SH_UCODESTAT);
if ((fwstate != B43_SHM_SH_UCODESTAT_SUSP) &&
(fwstate != B43_SHM_SH_UCODESTAT_SLEEP)) {
b43err(dev->wl, "b43_mac_enable(): The firmware "
"should be suspended, but current state is %u\n",
fwstate);
}
}
dev->mac_suspended--;
B43_WARN_ON(dev->mac_suspended < 0);
if (dev->mac_suspended == 0) {
b43_maskset32(dev, B43_MMIO_MACCTL, ~0, B43_MACCTL_ENABLED);
b43_write32(dev, B43_MMIO_GEN_IRQ_REASON,
B43_IRQ_MAC_SUSPENDED);
/* Commit writes */
b43_read32(dev, B43_MMIO_MACCTL);
b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
b43_power_saving_ctl_bits(dev, 0);
}
}
/* http://bcm-specs.sipsolutions.net/SuspendMAC */
void b43_mac_suspend(struct b43_wldev *dev)
{
int i;
u32 tmp;
might_sleep();
B43_WARN_ON(dev->mac_suspended < 0);
if (dev->mac_suspended == 0) {
b43_power_saving_ctl_bits(dev, B43_PS_AWAKE);
b43_maskset32(dev, B43_MMIO_MACCTL, ~B43_MACCTL_ENABLED, 0);
/* force pci to flush the write */
b43_read32(dev, B43_MMIO_MACCTL);
for (i = 35; i; i--) {
tmp = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
if (tmp & B43_IRQ_MAC_SUSPENDED)
goto out;
udelay(10);
}
/* Hm, it seems this will take some time. Use msleep(). */
for (i = 40; i; i--) {
tmp = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
if (tmp & B43_IRQ_MAC_SUSPENDED)
goto out;
msleep(1);
}
b43err(dev->wl, "MAC suspend failed\n");
}
out:
dev->mac_suspended++;
}
/* http://bcm-v4.sipsolutions.net/802.11/PHY/N/MacPhyClkSet */
void b43_mac_phy_clock_set(struct b43_wldev *dev, bool on)
{
u32 tmp;
switch (dev->dev->bus_type) {
#ifdef CONFIG_B43_BCMA
case B43_BUS_BCMA:
tmp = bcma_aread32(dev->dev->bdev, BCMA_IOCTL);
if (on)
tmp |= B43_BCMA_IOCTL_MACPHYCLKEN;
else
tmp &= ~B43_BCMA_IOCTL_MACPHYCLKEN;
bcma_awrite32(dev->dev->bdev, BCMA_IOCTL, tmp);
break;
#endif
#ifdef CONFIG_B43_SSB
case B43_BUS_SSB:
tmp = ssb_read32(dev->dev->sdev, SSB_TMSLOW);
if (on)
tmp |= B43_TMSLOW_MACPHYCLKEN;
else
tmp &= ~B43_TMSLOW_MACPHYCLKEN;
ssb_write32(dev->dev->sdev, SSB_TMSLOW, tmp);
break;
#endif
}
}
static void b43_adjust_opmode(struct b43_wldev *dev)
{
struct b43_wl *wl = dev->wl;
u32 ctl;
u16 cfp_pretbtt;
ctl = b43_read32(dev, B43_MMIO_MACCTL);
/* Reset status to STA infrastructure mode. */
ctl &= ~B43_MACCTL_AP;
ctl &= ~B43_MACCTL_KEEP_CTL;
ctl &= ~B43_MACCTL_KEEP_BADPLCP;
ctl &= ~B43_MACCTL_KEEP_BAD;
ctl &= ~B43_MACCTL_PROMISC;
ctl &= ~B43_MACCTL_BEACPROMISC;
ctl |= B43_MACCTL_INFRA;
if (b43_is_mode(wl, NL80211_IFTYPE_AP) ||
b43_is_mode(wl, NL80211_IFTYPE_MESH_POINT))
ctl |= B43_MACCTL_AP;
else if (b43_is_mode(wl, NL80211_IFTYPE_ADHOC))
ctl &= ~B43_MACCTL_INFRA;
if (wl->filter_flags & FIF_CONTROL)
ctl |= B43_MACCTL_KEEP_CTL;
if (wl->filter_flags & FIF_FCSFAIL)
ctl |= B43_MACCTL_KEEP_BAD;
if (wl->filter_flags & FIF_PLCPFAIL)
ctl |= B43_MACCTL_KEEP_BADPLCP;
if (wl->filter_flags & FIF_PROMISC_IN_BSS)
ctl |= B43_MACCTL_PROMISC;
if (wl->filter_flags & FIF_BCN_PRBRESP_PROMISC)
ctl |= B43_MACCTL_BEACPROMISC;
/* Workaround: On old hardware the HW-MAC-address-filter
* doesn't work properly, so always run promisc in filter
* it in software. */
if (dev->dev->core_rev <= 4)
ctl |= B43_MACCTL_PROMISC;
b43_write32(dev, B43_MMIO_MACCTL, ctl);
cfp_pretbtt = 2;
if ((ctl & B43_MACCTL_INFRA) && !(ctl & B43_MACCTL_AP)) {
if (dev->dev->chip_id == 0x4306 &&
dev->dev->chip_rev == 3)
cfp_pretbtt = 100;
else
cfp_pretbtt = 50;
}
b43_write16(dev, 0x612, cfp_pretbtt);
/* FIXME: We don't currently implement the PMQ mechanism,
* so always disable it. If we want to implement PMQ,
* we need to enable it here (clear DISCPMQ) in AP mode.
*/
if (0 /* ctl & B43_MACCTL_AP */)
b43_maskset32(dev, B43_MMIO_MACCTL, ~B43_MACCTL_DISCPMQ, 0);
else
b43_maskset32(dev, B43_MMIO_MACCTL, ~0, B43_MACCTL_DISCPMQ);
}
static void b43_rate_memory_write(struct b43_wldev *dev, u16 rate, int is_ofdm)
{
u16 offset;
if (is_ofdm) {
offset = 0x480;
offset += (b43_plcp_get_ratecode_ofdm(rate) & 0x000F) * 2;
} else {
offset = 0x4C0;
offset += (b43_plcp_get_ratecode_cck(rate) & 0x000F) * 2;
}
b43_shm_write16(dev, B43_SHM_SHARED, offset + 0x20,
b43_shm_read16(dev, B43_SHM_SHARED, offset));
}
static void b43_rate_memory_init(struct b43_wldev *dev)
{
switch (dev->phy.type) {
case B43_PHYTYPE_A:
case B43_PHYTYPE_G:
case B43_PHYTYPE_N:
case B43_PHYTYPE_LP:
case B43_PHYTYPE_HT:
case B43_PHYTYPE_LCN:
b43_rate_memory_write(dev, B43_OFDM_RATE_6MB, 1);
b43_rate_memory_write(dev, B43_OFDM_RATE_12MB, 1);
b43_rate_memory_write(dev, B43_OFDM_RATE_18MB, 1);
b43_rate_memory_write(dev, B43_OFDM_RATE_24MB, 1);
b43_rate_memory_write(dev, B43_OFDM_RATE_36MB, 1);
b43_rate_memory_write(dev, B43_OFDM_RATE_48MB, 1);
b43_rate_memory_write(dev, B43_OFDM_RATE_54MB, 1);
if (dev->phy.type == B43_PHYTYPE_A)
break;
/* fallthrough */
case B43_PHYTYPE_B:
b43_rate_memory_write(dev, B43_CCK_RATE_1MB, 0);
b43_rate_memory_write(dev, B43_CCK_RATE_2MB, 0);
b43_rate_memory_write(dev, B43_CCK_RATE_5MB, 0);
b43_rate_memory_write(dev, B43_CCK_RATE_11MB, 0);
break;
default:
B43_WARN_ON(1);
}
}
/* Set the default values for the PHY TX Control Words. */
static void b43_set_phytxctl_defaults(struct b43_wldev *dev)
{
u16 ctl = 0;
ctl |= B43_TXH_PHY_ENC_CCK;
ctl |= B43_TXH_PHY_ANT01AUTO;
ctl |= B43_TXH_PHY_TXPWR;
b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_BEACPHYCTL, ctl);
b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_ACKCTSPHYCTL, ctl);
b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRPHYCTL, ctl);
}
/* Set the TX-Antenna for management frames sent by firmware. */
static void b43_mgmtframe_txantenna(struct b43_wldev *dev, int antenna)
{
u16 ant;
u16 tmp;
ant = b43_antenna_to_phyctl(antenna);
/* For ACK/CTS */
tmp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_ACKCTSPHYCTL);
tmp = (tmp & ~B43_TXH_PHY_ANT) | ant;
b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_ACKCTSPHYCTL, tmp);
/* For Probe Resposes */
tmp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_PRPHYCTL);
tmp = (tmp & ~B43_TXH_PHY_ANT) | ant;
b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRPHYCTL, tmp);
}
/* This is the opposite of b43_chip_init() */
static void b43_chip_exit(struct b43_wldev *dev)
{
b43_phy_exit(dev);
b43_gpio_cleanup(dev);
/* firmware is released later */
}
/* Initialize the chip
* http://bcm-specs.sipsolutions.net/ChipInit
*/
static int b43_chip_init(struct b43_wldev *dev)
{
struct b43_phy *phy = &dev->phy;
int err;
u32 macctl;
u16 value16;
/* Initialize the MAC control */
macctl = B43_MACCTL_IHR_ENABLED | B43_MACCTL_SHM_ENABLED;
if (dev->phy.gmode)
macctl |= B43_MACCTL_GMODE;
macctl |= B43_MACCTL_INFRA;
b43_write32(dev, B43_MMIO_MACCTL, macctl);
err = b43_upload_microcode(dev);
if (err)
goto out; /* firmware is released later */
err = b43_gpio_init(dev);
if (err)
goto out; /* firmware is released later */
err = b43_upload_initvals(dev);
if (err)
goto err_gpio_clean;
/* Turn the Analog on and initialize the PHY. */
phy->ops->switch_analog(dev, 1);
err = b43_phy_init(dev);
if (err)
goto err_gpio_clean;
/* Disable Interference Mitigation. */
if (phy->ops->interf_mitigation)
phy->ops->interf_mitigation(dev, B43_INTERFMODE_NONE);
/* Select the antennae */
if (phy->ops->set_rx_antenna)
phy->ops->set_rx_antenna(dev, B43_ANTENNA_DEFAULT);
b43_mgmtframe_txantenna(dev, B43_ANTENNA_DEFAULT);
if (phy->type == B43_PHYTYPE_B) {
value16 = b43_read16(dev, 0x005E);
value16 |= 0x0004;
b43_write16(dev, 0x005E, value16);
}
b43_write32(dev, 0x0100, 0x01000000);
if (dev->dev->core_rev < 5)
b43_write32(dev, 0x010C, 0x01000000);
b43_maskset32(dev, B43_MMIO_MACCTL, ~B43_MACCTL_INFRA, 0);
b43_maskset32(dev, B43_MMIO_MACCTL, ~0, B43_MACCTL_INFRA);
/* Probe Response Timeout value */
/* FIXME: Default to 0, has to be set by ioctl probably... :-/ */
b43_shm_write16(dev, B43_SHM_SHARED, 0x0074, 0x0000);
/* Initially set the wireless operation mode. */
b43_adjust_opmode(dev);
if (dev->dev->core_rev < 3) {
b43_write16(dev, 0x060E, 0x0000);
b43_write16(dev, 0x0610, 0x8000);
b43_write16(dev, 0x0604, 0x0000);
b43_write16(dev, 0x0606, 0x0200);
} else {
b43_write32(dev, 0x0188, 0x80000000);
b43_write32(dev, 0x018C, 0x02000000);
}
b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, 0x00004000);
b43_write32(dev, B43_MMIO_DMA0_IRQ_MASK, 0x0001DC00);
b43_write32(dev, B43_MMIO_DMA1_IRQ_MASK, 0x0000DC00);
b43_write32(dev, B43_MMIO_DMA2_IRQ_MASK, 0x0000DC00);
b43_write32(dev, B43_MMIO_DMA3_IRQ_MASK, 0x0001DC00);
b43_write32(dev, B43_MMIO_DMA4_IRQ_MASK, 0x0000DC00);
b43_write32(dev, B43_MMIO_DMA5_IRQ_MASK, 0x0000DC00);
b43_mac_phy_clock_set(dev, true);
switch (dev->dev->bus_type) {
#ifdef CONFIG_B43_BCMA
case B43_BUS_BCMA:
/* FIXME: 0xE74 is quite common, but should be read from CC */
b43_write16(dev, B43_MMIO_POWERUP_DELAY, 0xE74);
break;
#endif
#ifdef CONFIG_B43_SSB
case B43_BUS_SSB:
b43_write16(dev, B43_MMIO_POWERUP_DELAY,
dev->dev->sdev->bus->chipco.fast_pwrup_delay);
break;
#endif
}
err = 0;
b43dbg(dev->wl, "Chip initialized\n");
out:
return err;
err_gpio_clean:
b43_gpio_cleanup(dev);
return err;
}
static void b43_periodic_every60sec(struct b43_wldev *dev)
{
const struct b43_phy_operations *ops = dev->phy.ops;
if (ops->pwork_60sec)
ops->pwork_60sec(dev);
/* Force check the TX power emission now. */
b43_phy_txpower_check(dev, B43_TXPWR_IGNORE_TIME);
}
static void b43_periodic_every30sec(struct b43_wldev *dev)
{
/* Update device statistics. */
b43_calculate_link_quality(dev);
}
static void b43_periodic_every15sec(struct b43_wldev *dev)
{
struct b43_phy *phy = &dev->phy;
u16 wdr;
if (dev->fw.opensource) {
/* Check if the firmware is still alive.
* It will reset the watchdog counter to 0 in its idle loop. */
wdr = b43_shm_read16(dev, B43_SHM_SCRATCH, B43_WATCHDOG_REG);
if (unlikely(wdr)) {
b43err(dev->wl, "Firmware watchdog: The firmware died!\n");
b43_controller_restart(dev, "Firmware watchdog");
return;
} else {
b43_shm_write16(dev, B43_SHM_SCRATCH,
B43_WATCHDOG_REG, 1);
}
}
if (phy->ops->pwork_15sec)
phy->ops->pwork_15sec(dev);
atomic_set(&phy->txerr_cnt, B43_PHY_TX_BADNESS_LIMIT);
wmb();
#if B43_DEBUG
if (b43_debug(dev, B43_DBG_VERBOSESTATS)) {
unsigned int i;
b43dbg(dev->wl, "Stats: %7u IRQs/sec, %7u TX/sec, %7u RX/sec\n",
dev->irq_count / 15,
dev->tx_count / 15,
dev->rx_count / 15);
dev->irq_count = 0;
dev->tx_count = 0;
dev->rx_count = 0;
for (i = 0; i < ARRAY_SIZE(dev->irq_bit_count); i++) {
if (dev->irq_bit_count[i]) {
b43dbg(dev->wl, "Stats: %7u IRQ-%02u/sec (0x%08X)\n",
dev->irq_bit_count[i] / 15, i, (1 << i));
dev->irq_bit_count[i] = 0;
}
}
}
#endif
}
static void do_periodic_work(struct b43_wldev *dev)
{
unsigned int state;
state = dev->periodic_state;
if (state % 4 == 0)
b43_periodic_every60sec(dev);
if (state % 2 == 0)
b43_periodic_every30sec(dev);
b43_periodic_every15sec(dev);
}
/* Periodic work locking policy:
* The whole periodic work handler is protected by
* wl->mutex. If another lock is needed somewhere in the
* pwork callchain, it's acquired in-place, where it's needed.
*/
static void b43_periodic_work_handler(struct work_struct *work)
{
struct b43_wldev *dev = container_of(work, struct b43_wldev,
periodic_work.work);
struct b43_wl *wl = dev->wl;
unsigned long delay;
mutex_lock(&wl->mutex);
if (unlikely(b43_status(dev) != B43_STAT_STARTED))
goto out;
if (b43_debug(dev, B43_DBG_PWORK_STOP))
goto out_requeue;
do_periodic_work(dev);
dev->periodic_state++;
out_requeue:
if (b43_debug(dev, B43_DBG_PWORK_FAST))
delay = msecs_to_jiffies(50);
else
delay = round_jiffies_relative(HZ * 15);
ieee80211_queue_delayed_work(wl->hw, &dev->periodic_work, delay);
out:
mutex_unlock(&wl->mutex);
}
static void b43_periodic_tasks_setup(struct b43_wldev *dev)
{
struct delayed_work *work = &dev->periodic_work;
dev->periodic_state = 0;
INIT_DELAYED_WORK(work, b43_periodic_work_handler);
ieee80211_queue_delayed_work(dev->wl->hw, work, 0);
}
/* Check if communication with the device works correctly. */
static int b43_validate_chipaccess(struct b43_wldev *dev)
{
u32 v, backup0, backup4;
backup0 = b43_shm_read32(dev, B43_SHM_SHARED, 0);
backup4 = b43_shm_read32(dev, B43_SHM_SHARED, 4);
/* Check for read/write and endianness problems. */
b43_shm_write32(dev, B43_SHM_SHARED, 0, 0x55AAAA55);
if (b43_shm_read32(dev, B43_SHM_SHARED, 0) != 0x55AAAA55)
goto error;
b43_shm_write32(dev, B43_SHM_SHARED, 0, 0xAA5555AA);
if (b43_shm_read32(dev, B43_SHM_SHARED, 0) != 0xAA5555AA)
goto error;
/* Check if unaligned 32bit SHM_SHARED access works properly.
* However, don't bail out on failure, because it's noncritical. */
b43_shm_write16(dev, B43_SHM_SHARED, 0, 0x1122);
b43_shm_write16(dev, B43_SHM_SHARED, 2, 0x3344);
b43_shm_write16(dev, B43_SHM_SHARED, 4, 0x5566);
b43_shm_write16(dev, B43_SHM_SHARED, 6, 0x7788);
if (b43_shm_read32(dev, B43_SHM_SHARED, 2) != 0x55663344)
b43warn(dev->wl, "Unaligned 32bit SHM read access is broken\n");
b43_shm_write32(dev, B43_SHM_SHARED, 2, 0xAABBCCDD);
if (b43_shm_read16(dev, B43_SHM_SHARED, 0) != 0x1122 ||
b43_shm_read16(dev, B43_SHM_SHARED, 2) != 0xCCDD ||
b43_shm_read16(dev, B43_SHM_SHARED, 4) != 0xAABB ||
b43_shm_read16(dev, B43_SHM_SHARED, 6) != 0x7788)
b43warn(dev->wl, "Unaligned 32bit SHM write access is broken\n");
b43_shm_write32(dev, B43_SHM_SHARED, 0, backup0);
b43_shm_write32(dev, B43_SHM_SHARED, 4, backup4);
if ((dev->dev->core_rev >= 3) && (dev->dev->core_rev <= 10)) {
/* The 32bit register shadows the two 16bit registers
* with update sideeffects. Validate this. */
b43_write16(dev, B43_MMIO_TSF_CFP_START, 0xAAAA);
b43_write32(dev, B43_MMIO_TSF_CFP_START, 0xCCCCBBBB);
if (b43_read16(dev, B43_MMIO_TSF_CFP_START_LOW) != 0xBBBB)
goto error;
if (b43_read16(dev, B43_MMIO_TSF_CFP_START_HIGH) != 0xCCCC)
goto error;
}
b43_write32(dev, B43_MMIO_TSF_CFP_START, 0);
v = b43_read32(dev, B43_MMIO_MACCTL);
v |= B43_MACCTL_GMODE;
if (v != (B43_MACCTL_GMODE | B43_MACCTL_IHR_ENABLED))
goto error;
return 0;
error:
b43err(dev->wl, "Failed to validate the chipaccess\n");
return -ENODEV;
}
static void b43_security_init(struct b43_wldev *dev)
{
dev->ktp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_KTP);
/* KTP is a word address, but we address SHM bytewise.
* So multiply by two.
*/
dev->ktp *= 2;
/* Number of RCMTA address slots */
b43_write16(dev, B43_MMIO_RCMTA_COUNT, B43_NR_PAIRWISE_KEYS);
/* Clear the key memory. */
b43_clear_keys(dev);
}
#ifdef CONFIG_B43_HWRNG
static int b43_rng_read(struct hwrng *rng, u32 *data)
{
struct b43_wl *wl = (struct b43_wl *)rng->priv;
struct b43_wldev *dev;
int count = -ENODEV;
mutex_lock(&wl->mutex);
dev = wl->current_dev;
if (likely(dev && b43_status(dev) >= B43_STAT_INITIALIZED)) {
*data = b43_read16(dev, B43_MMIO_RNG);
count = sizeof(u16);
}
mutex_unlock(&wl->mutex);
return count;
}
#endif /* CONFIG_B43_HWRNG */
static void b43_rng_exit(struct b43_wl *wl)
{
#ifdef CONFIG_B43_HWRNG
if (wl->rng_initialized)
hwrng_unregister(&wl->rng);
#endif /* CONFIG_B43_HWRNG */
}
static int b43_rng_init(struct b43_wl *wl)
{
int err = 0;
#ifdef CONFIG_B43_HWRNG
snprintf(wl->rng_name, ARRAY_SIZE(wl->rng_name),
"%s_%s", KBUILD_MODNAME, wiphy_name(wl->hw->wiphy));
wl->rng.name = wl->rng_name;
wl->rng.data_read = b43_rng_read;
wl->rng.priv = (unsigned long)wl;
wl->rng_initialized = true;
err = hwrng_register(&wl->rng);
if (err) {
wl->rng_initialized = false;
b43err(wl, "Failed to register the random "
"number generator (%d)\n", err);
}
#endif /* CONFIG_B43_HWRNG */
return err;
}
static void b43_tx_work(struct work_struct *work)
{
struct b43_wl *wl = container_of(work, struct b43_wl, tx_work);
struct b43_wldev *dev;
struct sk_buff *skb;
int queue_num;
int err = 0;
mutex_lock(&wl->mutex);
dev = wl->current_dev;
if (unlikely(!dev || b43_status(dev) < B43_STAT_STARTED)) {
mutex_unlock(&wl->mutex);
return;
}
for (queue_num = 0; queue_num < B43_QOS_QUEUE_NUM; queue_num++) {
while (skb_queue_len(&wl->tx_queue[queue_num])) {
skb = skb_dequeue(&wl->tx_queue[queue_num]);
if (b43_using_pio_transfers(dev))
err = b43_pio_tx(dev, skb);
else
err = b43_dma_tx(dev, skb);
if (err == -ENOSPC) {
wl->tx_queue_stopped[queue_num] = 1;
ieee80211_stop_queue(wl->hw, queue_num);
skb_queue_head(&wl->tx_queue[queue_num], skb);
break;
}
if (unlikely(err))
dev_kfree_skb(skb); /* Drop it */
err = 0;
}
if (!err)
wl->tx_queue_stopped[queue_num] = 0;
}
#if B43_DEBUG
dev->tx_count++;
#endif
mutex_unlock(&wl->mutex);
}
static void b43_op_tx(struct ieee80211_hw *hw,
struct sk_buff *skb)
{
struct b43_wl *wl = hw_to_b43_wl(hw);
if (unlikely(skb->len < 2 + 2 + 6)) {
/* Too short, this can't be a valid frame. */
dev_kfree_skb_any(skb);
return;
}
B43_WARN_ON(skb_shinfo(skb)->nr_frags);
skb_queue_tail(&wl->tx_queue[skb->queue_mapping], skb);
if (!wl->tx_queue_stopped[skb->queue_mapping]) {
ieee80211_queue_work(wl->hw, &wl->tx_work);
} else {
ieee80211_stop_queue(wl->hw, skb->queue_mapping);
}
}
static void b43_qos_params_upload(struct b43_wldev *dev,
const struct ieee80211_tx_queue_params *p,
u16 shm_offset)
{
u16 params[B43_NR_QOSPARAMS];
int bslots, tmp;
unsigned int i;
if (!dev->qos_enabled)
return;
bslots = b43_read16(dev, B43_MMIO_RNG) & p->cw_min;
memset(&params, 0, sizeof(params));
params[B43_QOSPARAM_TXOP] = p->txop * 32;
params[B43_QOSPARAM_CWMIN] = p->cw_min;
params[B43_QOSPARAM_CWMAX] = p->cw_max;
params[B43_QOSPARAM_CWCUR] = p->cw_min;
params[B43_QOSPARAM_AIFS] = p->aifs;
params[B43_QOSPARAM_BSLOTS] = bslots;
params[B43_QOSPARAM_REGGAP] = bslots + p->aifs;
for (i = 0; i < ARRAY_SIZE(params); i++) {
if (i == B43_QOSPARAM_STATUS) {
tmp = b43_shm_read16(dev, B43_SHM_SHARED,
shm_offset + (i * 2));
/* Mark the parameters as updated. */
tmp |= 0x100;
b43_shm_write16(dev, B43_SHM_SHARED,
shm_offset + (i * 2),
tmp);
} else {
b43_shm_write16(dev, B43_SHM_SHARED,
shm_offset + (i * 2),
params[i]);
}
}
}
/* Mapping of mac80211 queue numbers to b43 QoS SHM offsets. */
static const u16 b43_qos_shm_offsets[] = {
/* [mac80211-queue-nr] = SHM_OFFSET, */
[0] = B43_QOS_VOICE,
[1] = B43_QOS_VIDEO,
[2] = B43_QOS_BESTEFFORT,
[3] = B43_QOS_BACKGROUND,
};
/* Update all QOS parameters in hardware. */
static void b43_qos_upload_all(struct b43_wldev *dev)
{
struct b43_wl *wl = dev->wl;
struct b43_qos_params *params;
unsigned int i;
if (!dev->qos_enabled)
return;
BUILD_BUG_ON(ARRAY_SIZE(b43_qos_shm_offsets) !=
ARRAY_SIZE(wl->qos_params));
b43_mac_suspend(dev);
for (i = 0; i < ARRAY_SIZE(wl->qos_params); i++) {
params = &(wl->qos_params[i]);
b43_qos_params_upload(dev, &(params->p),
b43_qos_shm_offsets[i]);
}
b43_mac_enable(dev);
}
static void b43_qos_clear(struct b43_wl *wl)
{
struct b43_qos_params *params;
unsigned int i;
/* Initialize QoS parameters to sane defaults. */
BUILD_BUG_ON(ARRAY_SIZE(b43_qos_shm_offsets) !=
ARRAY_SIZE(wl->qos_params));
for (i = 0; i < ARRAY_SIZE(wl->qos_params); i++) {
params = &(wl->qos_params[i]);
switch (b43_qos_shm_offsets[i]) {
case B43_QOS_VOICE:
params->p.txop = 0;
params->p.aifs = 2;
params->p.cw_min = 0x0001;
params->p.cw_max = 0x0001;
break;
case B43_QOS_VIDEO:
params->p.txop = 0;
params->p.aifs = 2;
params->p.cw_min = 0x0001;
params->p.cw_max = 0x0001;
break;
case B43_QOS_BESTEFFORT:
params->p.txop = 0;
params->p.aifs = 3;
params->p.cw_min = 0x0001;
params->p.cw_max = 0x03FF;
break;
case B43_QOS_BACKGROUND:
params->p.txop = 0;
params->p.aifs = 7;
params->p.cw_min = 0x0001;
params->p.cw_max = 0x03FF;
break;
default:
B43_WARN_ON(1);
}
}
}
/* Initialize the core's QOS capabilities */
static void b43_qos_init(struct b43_wldev *dev)
{
if (!dev->qos_enabled) {
/* Disable QOS support. */
b43_hf_write(dev, b43_hf_read(dev) & ~B43_HF_EDCF);
b43_write16(dev, B43_MMIO_IFSCTL,
b43_read16(dev, B43_MMIO_IFSCTL)
& ~B43_MMIO_IFSCTL_USE_EDCF);
b43dbg(dev->wl, "QoS disabled\n");
return;
}
/* Upload the current QOS parameters. */
b43_qos_upload_all(dev);
/* Enable QOS support. */
b43_hf_write(dev, b43_hf_read(dev) | B43_HF_EDCF);
b43_write16(dev, B43_MMIO_IFSCTL,
b43_read16(dev, B43_MMIO_IFSCTL)
| B43_MMIO_IFSCTL_USE_EDCF);
b43dbg(dev->wl, "QoS enabled\n");
}
static int b43_op_conf_tx(struct ieee80211_hw *hw,
struct ieee80211_vif *vif, u16 _queue,
const struct ieee80211_tx_queue_params *params)
{
struct b43_wl *wl = hw_to_b43_wl(hw);
struct b43_wldev *dev;
unsigned int queue = (unsigned int)_queue;
int err = -ENODEV;
if (queue >= ARRAY_SIZE(wl->qos_params)) {
/* Queue not available or don't support setting
* params on this queue. Return success to not
* confuse mac80211. */
return 0;
}
BUILD_BUG_ON(ARRAY_SIZE(b43_qos_shm_offsets) !=
ARRAY_SIZE(wl->qos_params));
mutex_lock(&wl->mutex);
dev = wl->current_dev;
if (unlikely(!dev || (b43_status(dev) < B43_STAT_INITIALIZED)))
goto out_unlock;
memcpy(&(wl->qos_params[queue].p), params, sizeof(*params));
b43_mac_suspend(dev);
b43_qos_params_upload(dev, &(wl->qos_params[queue].p),
b43_qos_shm_offsets[queue]);
b43_mac_enable(dev);
err = 0;
out_unlock:
mutex_unlock(&wl->mutex);
return err;
}
static int b43_op_get_stats(struct ieee80211_hw *hw,
struct ieee80211_low_level_stats *stats)
{
struct b43_wl *wl = hw_to_b43_wl(hw);
mutex_lock(&wl->mutex);
memcpy(stats, &wl->ieee_stats, sizeof(*stats));
mutex_unlock(&wl->mutex);
return 0;
}
static u64 b43_op_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
{
struct b43_wl *wl = hw_to_b43_wl(hw);
struct b43_wldev *dev;
u64 tsf;
mutex_lock(&wl->mutex);
dev = wl->current_dev;
if (dev && (b43_status(dev) >= B43_STAT_INITIALIZED))
b43_tsf_read(dev, &tsf);
else
tsf = 0;
mutex_unlock(&wl->mutex);
return tsf;
}
static void b43_op_set_tsf(struct ieee80211_hw *hw,
struct ieee80211_vif *vif, u64 tsf)
{
struct b43_wl *wl = hw_to_b43_wl(hw);
struct b43_wldev *dev;
mutex_lock(&wl->mutex);
dev = wl->current_dev;
if (dev && (b43_status(dev) >= B43_STAT_INITIALIZED))
b43_tsf_write(dev, tsf);
mutex_unlock(&wl->mutex);
}
static void b43_put_phy_into_reset(struct b43_wldev *dev)
{
u32 tmp;
switch (dev->dev->bus_type) {
#ifdef CONFIG_B43_BCMA
case B43_BUS_BCMA:
b43err(dev->wl,
"Putting PHY into reset not supported on BCMA\n");
break;
#endif
#ifdef CONFIG_B43_SSB
case B43_BUS_SSB:
tmp = ssb_read32(dev->dev->sdev, SSB_TMSLOW);
tmp &= ~B43_TMSLOW_GMODE;
tmp |= B43_TMSLOW_PHYRESET;
tmp |= SSB_TMSLOW_FGC;
ssb_write32(dev->dev->sdev, SSB_TMSLOW, tmp);
msleep(1);
tmp = ssb_read32(dev->dev->sdev, SSB_TMSLOW);
tmp &= ~SSB_TMSLOW_FGC;
tmp |= B43_TMSLOW_PHYRESET;
ssb_write32(dev->dev->sdev, SSB_TMSLOW, tmp);
msleep(1);
break;
#endif
}
}
static const char *band_to_string(enum ieee80211_band band)
{
switch (band) {
case IEEE80211_BAND_5GHZ:
return "5";
case IEEE80211_BAND_2GHZ:
return "2.4";
default:
break;
}
B43_WARN_ON(1);
return "";
}
/* Expects wl->mutex locked */
static int b43_switch_band(struct b43_wl *wl, struct ieee80211_channel *chan)
{
struct b43_wldev *up_dev = NULL;
struct b43_wldev *down_dev;
struct b43_wldev *d;
int err;
bool uninitialized_var(gmode);
int prev_status;
/* Find a device and PHY which supports the band. */
list_for_each_entry(d, &wl->devlist, list) {
switch (chan->band) {
case IEEE80211_BAND_5GHZ:
if (d->phy.supports_5ghz) {
up_dev = d;
gmode = false;
}
break;
case IEEE80211_BAND_2GHZ:
if (d->phy.supports_2ghz) {
up_dev = d;
gmode = true;
}
break;
default:
B43_WARN_ON(1);
return -EINVAL;
}
if (up_dev)
break;
}
if (!up_dev) {
b43err(wl, "Could not find a device for %s-GHz band operation\n",
band_to_string(chan->band));
return -ENODEV;
}
if ((up_dev == wl->current_dev) &&
(!!wl->current_dev->phy.gmode == !!gmode)) {
/* This device is already running. */
return 0;
}
b43dbg(wl, "Switching to %s-GHz band\n",
band_to_string(chan->band));
down_dev = wl->current_dev;
prev_status = b43_status(down_dev);
/* Shutdown the currently running core. */
if (prev_status >= B43_STAT_STARTED)
down_dev = b43_wireless_core_stop(down_dev);
if (prev_status >= B43_STAT_INITIALIZED)
b43_wireless_core_exit(down_dev);
if (down_dev != up_dev) {
/* We switch to a different core, so we put PHY into
* RESET on the old core. */
b43_put_phy_into_reset(down_dev);
}
/* Now start the new core. */
up_dev->phy.gmode = gmode;
if (prev_status >= B43_STAT_INITIALIZED) {
err = b43_wireless_core_init(up_dev);
if (err) {
b43err(wl, "Fatal: Could not initialize device for "
"selected %s-GHz band\n",
band_to_string(chan->band));
goto init_failure;
}
}
if (prev_status >= B43_STAT_STARTED) {
err = b43_wireless_core_start(up_dev);
if (err) {
b43err(wl, "Fatal: Could not start device for "
"selected %s-GHz band\n",
band_to_string(chan->band));
b43_wireless_core_exit(up_dev);
goto init_failure;
}
}
B43_WARN_ON(b43_status(up_dev) != prev_status);
wl->current_dev = up_dev;
return 0;
init_failure:
/* Whoops, failed to init the new core. No core is operating now. */
wl->current_dev = NULL;
return err;
}
/* Write the short and long frame retry limit values. */
static void b43_set_retry_limits(struct b43_wldev *dev,
unsigned int short_retry,
unsigned int long_retry)
{
/* The retry limit is a 4-bit counter. Enforce this to avoid overflowing
* the chip-internal counter. */
short_retry = min(short_retry, (unsigned int)0xF);
long_retry = min(long_retry, (unsigned int)0xF);
b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_SRLIMIT,
short_retry);
b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_LRLIMIT,
long_retry);
}
static int b43_op_config(struct ieee80211_hw *hw, u32 changed)
{
struct b43_wl *wl = hw_to_b43_wl(hw);
struct b43_wldev *dev;
struct b43_phy *phy;
struct ieee80211_conf *conf = &hw->conf;
int antenna;
int err = 0;
bool reload_bss = false;
mutex_lock(&wl->mutex);
dev = wl->current_dev;
/* Switch the band (if necessary). This might change the active core. */
err = b43_switch_band(wl, conf->channel);
if (err)
goto out_unlock_mutex;
/* Need to reload all settings if the core changed */
if (dev != wl->current_dev) {
dev = wl->current_dev;
changed = ~0;
reload_bss = true;
}
phy = &dev->phy;
if (conf_is_ht(conf))
phy->is_40mhz =
(conf_is_ht40_minus(conf) || conf_is_ht40_plus(conf));
else
phy->is_40mhz = false;
b43_mac_suspend(dev);
if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS)
b43_set_retry_limits(dev, conf->short_frame_max_tx_count,
conf->long_frame_max_tx_count);
changed &= ~IEEE80211_CONF_CHANGE_RETRY_LIMITS;
if (!changed)
goto out_mac_enable;
/* Switch to the requested channel.
* The firmware takes care of races with the TX handler. */
if (conf->channel->hw_value != phy->channel)
b43_switch_channel(dev, conf->channel->hw_value);
dev->wl->radiotap_enabled = !!(conf->flags & IEEE80211_CONF_MONITOR);
/* Adjust the desired TX power level. */
if (conf->power_level != 0) {
if (conf->power_level != phy->desired_txpower) {
phy->desired_txpower = conf->power_level;
b43_phy_txpower_check(dev, B43_TXPWR_IGNORE_TIME |
B43_TXPWR_IGNORE_TSSI);
}
}
/* Antennas for RX and management frame TX. */
antenna = B43_ANTENNA_DEFAULT;
b43_mgmtframe_txantenna(dev, antenna);
antenna = B43_ANTENNA_DEFAULT;
if (phy->ops->set_rx_antenna)
phy->ops->set_rx_antenna(dev, antenna);
if (wl->radio_enabled != phy->radio_on) {
if (wl->radio_enabled) {
b43_software_rfkill(dev, false);
b43info(dev->wl, "Radio turned on by software\n");
if (!dev->radio_hw_enable) {
b43info(dev->wl, "The hardware RF-kill button "
"still turns the radio physically off. "
"Press the button to turn it on.\n");
}
} else {
b43_software_rfkill(dev, true);
b43info(dev->wl, "Radio turned off by software\n");
}
}
out_mac_enable:
b43_mac_enable(dev);
out_unlock_mutex:
mutex_unlock(&wl->mutex);
if (wl->vif && reload_bss)
b43_op_bss_info_changed(hw, wl->vif, &wl->vif->bss_conf, ~0);
return err;
}
static void b43_update_basic_rates(struct b43_wldev *dev, u32 brates)
{
struct ieee80211_supported_band *sband =
dev->wl->hw->wiphy->bands[b43_current_band(dev->wl)];
struct ieee80211_rate *rate;
int i;
u16 basic, direct, offset, basic_offset, rateptr;
for (i = 0; i < sband->n_bitrates; i++) {
rate = &sband->bitrates[i];
if (b43_is_cck_rate(rate->hw_value)) {
direct = B43_SHM_SH_CCKDIRECT;
basic = B43_SHM_SH_CCKBASIC;
offset = b43_plcp_get_ratecode_cck(rate->hw_value);
offset &= 0xF;
} else {
direct = B43_SHM_SH_OFDMDIRECT;
basic = B43_SHM_SH_OFDMBASIC;
offset = b43_plcp_get_ratecode_ofdm(rate->hw_value);
offset &= 0xF;
}
rate = ieee80211_get_response_rate(sband, brates, rate->bitrate);
if (b43_is_cck_rate(rate->hw_value)) {
basic_offset = b43_plcp_get_ratecode_cck(rate->hw_value);
basic_offset &= 0xF;
} else {
basic_offset = b43_plcp_get_ratecode_ofdm(rate->hw_value);
basic_offset &= 0xF;
}
/*
* Get the pointer that we need to point to
* from the direct map
*/
rateptr = b43_shm_read16(dev, B43_SHM_SHARED,
direct + 2 * basic_offset);
/* and write it to the basic map */
b43_shm_write16(dev, B43_SHM_SHARED, basic + 2 * offset,
rateptr);
}
}
static void b43_op_bss_info_changed(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_bss_conf *conf,
u32 changed)
{
struct b43_wl *wl = hw_to_b43_wl(hw);
struct b43_wldev *dev;
mutex_lock(&wl->mutex);
dev = wl->current_dev;
if (!dev || b43_status(dev) < B43_STAT_STARTED)
goto out_unlock_mutex;
B43_WARN_ON(wl->vif != vif);
if (changed & BSS_CHANGED_BSSID) {
if (conf->bssid)
memcpy(wl->bssid, conf->bssid, ETH_ALEN);
else
memset(wl->bssid, 0, ETH_ALEN);
}
if (b43_status(dev) >= B43_STAT_INITIALIZED) {
if (changed & BSS_CHANGED_BEACON &&
(b43_is_mode(wl, NL80211_IFTYPE_AP) ||
b43_is_mode(wl, NL80211_IFTYPE_MESH_POINT) ||
b43_is_mode(wl, NL80211_IFTYPE_ADHOC)))
b43_update_templates(wl);
if (changed & BSS_CHANGED_BSSID)
b43_write_mac_bssid_templates(dev);
}
b43_mac_suspend(dev);
/* Update templates for AP/mesh mode. */
if (changed & BSS_CHANGED_BEACON_INT &&
(b43_is_mode(wl, NL80211_IFTYPE_AP) ||
b43_is_mode(wl, NL80211_IFTYPE_MESH_POINT) ||
b43_is_mode(wl, NL80211_IFTYPE_ADHOC)) &&
conf->beacon_int)
b43_set_beacon_int(dev, conf->beacon_int);
if (changed & BSS_CHANGED_BASIC_RATES)
b43_update_basic_rates(dev, conf->basic_rates);
if (changed & BSS_CHANGED_ERP_SLOT) {
if (conf->use_short_slot)
b43_short_slot_timing_enable(dev);
else
b43_short_slot_timing_disable(dev);
}
b43_mac_enable(dev);
out_unlock_mutex:
mutex_unlock(&wl->mutex);
}
static int b43_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
struct ieee80211_vif *vif, struct ieee80211_sta *sta,
struct ieee80211_key_conf *key)
{
struct b43_wl *wl = hw_to_b43_wl(hw);
struct b43_wldev *dev;
u8 algorithm;
u8 index;
int err;
static const u8 bcast_addr[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
if (modparam_nohwcrypt)
return -ENOSPC; /* User disabled HW-crypto */
if ((vif->type == NL80211_IFTYPE_ADHOC ||
vif->type == NL80211_IFTYPE_MESH_POINT) &&
(key->cipher == WLAN_CIPHER_SUITE_TKIP ||
key->cipher == WLAN_CIPHER_SUITE_CCMP) &&
!(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) {
/*
* For now, disable hw crypto for the RSN IBSS group keys. This
* could be optimized in the future, but until that gets
* implemented, use of software crypto for group addressed
* frames is a acceptable to allow RSN IBSS to be used.
*/
return -EOPNOTSUPP;
}
mutex_lock(&wl->mutex);
dev = wl->current_dev;
err = -ENODEV;
if (!dev || b43_status(dev) < B43_STAT_INITIALIZED)
goto out_unlock;
if (dev->fw.pcm_request_failed || !dev->hwcrypto_enabled) {
/* We don't have firmware for the crypto engine.
* Must use software-crypto. */
err = -EOPNOTSUPP;
goto out_unlock;
}
err = -EINVAL;
switch (key->cipher) {
case WLAN_CIPHER_SUITE_WEP40:
algorithm = B43_SEC_ALGO_WEP40;
break;
case WLAN_CIPHER_SUITE_WEP104:
algorithm = B43_SEC_ALGO_WEP104;
break;
case WLAN_CIPHER_SUITE_TKIP:
algorithm = B43_SEC_ALGO_TKIP;
break;
case WLAN_CIPHER_SUITE_CCMP:
algorithm = B43_SEC_ALGO_AES;
break;
default:
B43_WARN_ON(1);
goto out_unlock;
}
index = (u8) (key->keyidx);
if (index > 3)
goto out_unlock;
switch (cmd) {
case SET_KEY:
if (algorithm == B43_SEC_ALGO_TKIP &&
(!(key->flags & IEEE80211_KEY_FLAG_PAIRWISE) ||
!modparam_hwtkip)) {
/* We support only pairwise key */
err = -EOPNOTSUPP;
goto out_unlock;
}
if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) {
if (WARN_ON(!sta)) {
err = -EOPNOTSUPP;
goto out_unlock;
}
/* Pairwise key with an assigned MAC address. */
err = b43_key_write(dev, -1, algorithm,
key->key, key->keylen,
sta->addr, key);
} else {
/* Group key */
err = b43_key_write(dev, index, algorithm,
key->key, key->keylen, NULL, key);
}
if (err)
goto out_unlock;
if (algorithm == B43_SEC_ALGO_WEP40 ||
algorithm == B43_SEC_ALGO_WEP104) {
b43_hf_write(dev, b43_hf_read(dev) | B43_HF_USEDEFKEYS);
} else {
b43_hf_write(dev,
b43_hf_read(dev) & ~B43_HF_USEDEFKEYS);
}
key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
if (algorithm == B43_SEC_ALGO_TKIP)
key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
break;
case DISABLE_KEY: {
err = b43_key_clear(dev, key->hw_key_idx);
if (err)
goto out_unlock;
break;
}
default:
B43_WARN_ON(1);
}
out_unlock:
if (!err) {
b43dbg(wl, "%s hardware based encryption for keyidx: %d, "
"mac: %pM\n",
cmd == SET_KEY ? "Using" : "Disabling", key->keyidx,
sta ? sta->addr : bcast_addr);
b43_dump_keymemory(dev);
}
mutex_unlock(&wl->mutex);
return err;
}
static void b43_op_configure_filter(struct ieee80211_hw *hw,
unsigned int changed, unsigned int *fflags,
u64 multicast)
{
struct b43_wl *wl = hw_to_b43_wl(hw);
struct b43_wldev *dev;
mutex_lock(&wl->mutex);
dev = wl->current_dev;
if (!dev) {
*fflags = 0;
goto out_unlock;
}
*fflags &= FIF_PROMISC_IN_BSS |
FIF_ALLMULTI |
FIF_FCSFAIL |
FIF_PLCPFAIL |
FIF_CONTROL |
FIF_OTHER_BSS |
FIF_BCN_PRBRESP_PROMISC;
changed &= FIF_PROMISC_IN_BSS |
FIF_ALLMULTI |
FIF_FCSFAIL |
FIF_PLCPFAIL |
FIF_CONTROL |
FIF_OTHER_BSS |
FIF_BCN_PRBRESP_PROMISC;
wl->filter_flags = *fflags;
if (changed && b43_status(dev) >= B43_STAT_INITIALIZED)
b43_adjust_opmode(dev);
out_unlock:
mutex_unlock(&wl->mutex);
}
/* Locking: wl->mutex
* Returns the current dev. This might be different from the passed in dev,
* because the core might be gone away while we unlocked the mutex. */
static struct b43_wldev * b43_wireless_core_stop(struct b43_wldev *dev)
{
struct b43_wl *wl;
struct b43_wldev *orig_dev;
u32 mask;
int queue_num;
if (!dev)
return NULL;
wl = dev->wl;
redo:
if (!dev || b43_status(dev) < B43_STAT_STARTED)
return dev;
/* Cancel work. Unlock to avoid deadlocks. */
mutex_unlock(&wl->mutex);
cancel_delayed_work_sync(&dev->periodic_work);
cancel_work_sync(&wl->tx_work);
cancel_work_sync(&wl->firmware_load);
mutex_lock(&wl->mutex);
dev = wl->current_dev;
if (!dev || b43_status(dev) < B43_STAT_STARTED) {
/* Whoops, aliens ate up the device while we were unlocked. */
return dev;
}
/* Disable interrupts on the device. */
b43_set_status(dev, B43_STAT_INITIALIZED);
if (b43_bus_host_is_sdio(dev->dev)) {
/* wl->mutex is locked. That is enough. */
b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, 0);
b43_read32(dev, B43_MMIO_GEN_IRQ_MASK); /* Flush */
} else {
spin_lock_irq(&wl->hardirq_lock);
b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, 0);
b43_read32(dev, B43_MMIO_GEN_IRQ_MASK); /* Flush */
spin_unlock_irq(&wl->hardirq_lock);
}
/* Synchronize and free the interrupt handlers. Unlock to avoid deadlocks. */
orig_dev = dev;
mutex_unlock(&wl->mutex);
if (b43_bus_host_is_sdio(dev->dev)) {
b43_sdio_free_irq(dev);
} else {
synchronize_irq(dev->dev->irq);
free_irq(dev->dev->irq, dev);
}
mutex_lock(&wl->mutex);
dev = wl->current_dev;
if (!dev)
return dev;
if (dev != orig_dev) {
if (b43_status(dev) >= B43_STAT_STARTED)
goto redo;
return dev;
}
mask = b43_read32(dev, B43_MMIO_GEN_IRQ_MASK);
B43_WARN_ON(mask != 0xFFFFFFFF && mask);
/* Drain all TX queues. */
for (queue_num = 0; queue_num < B43_QOS_QUEUE_NUM; queue_num++) {
while (skb_queue_len(&wl->tx_queue[queue_num]))
dev_kfree_skb(skb_dequeue(&wl->tx_queue[queue_num]));
}
b43_mac_suspend(dev);
b43_leds_exit(dev);
b43dbg(wl, "Wireless interface stopped\n");
return dev;
}
/* Locking: wl->mutex */
static int b43_wireless_core_start(struct b43_wldev *dev)
{
int err;
B43_WARN_ON(b43_status(dev) != B43_STAT_INITIALIZED);
drain_txstatus_queue(dev);
if (b43_bus_host_is_sdio(dev->dev)) {
err = b43_sdio_request_irq(dev, b43_sdio_interrupt_handler);
if (err) {
b43err(dev->wl, "Cannot request SDIO IRQ\n");
goto out;
}
} else {
err = request_threaded_irq(dev->dev->irq, b43_interrupt_handler,
b43_interrupt_thread_handler,
IRQF_SHARED, KBUILD_MODNAME, dev);
if (err) {
b43err(dev->wl, "Cannot request IRQ-%d\n",
dev->dev->irq);
goto out;
}
}
/* We are ready to run. */
ieee80211_wake_queues(dev->wl->hw);
b43_set_status(dev, B43_STAT_STARTED);
/* Start data flow (TX/RX). */
b43_mac_enable(dev);
b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, dev->irq_mask);
/* Start maintenance work */
b43_periodic_tasks_setup(dev);
b43_leds_init(dev);
b43dbg(dev->wl, "Wireless interface started\n");
out:
return err;
}
/* Get PHY and RADIO versioning numbers */
static int b43_phy_versioning(struct b43_wldev *dev)
{
struct b43_phy *phy = &dev->phy;
u32 tmp;
u8 analog_type;
u8 phy_type;
u8 phy_rev;
u16 radio_manuf;
u16 radio_ver;
u16 radio_rev;
int unsupported = 0;
/* Get PHY versioning */
tmp = b43_read16(dev, B43_MMIO_PHY_VER);
analog_type = (tmp & B43_PHYVER_ANALOG) >> B43_PHYVER_ANALOG_SHIFT;
phy_type = (tmp & B43_PHYVER_TYPE) >> B43_PHYVER_TYPE_SHIFT;
phy_rev = (tmp & B43_PHYVER_VERSION);
switch (phy_type) {
case B43_PHYTYPE_A:
if (phy_rev >= 4)
unsupported = 1;
break;
case B43_PHYTYPE_B:
if (phy_rev != 2 && phy_rev != 4 && phy_rev != 6
&& phy_rev != 7)
unsupported = 1;
break;
case B43_PHYTYPE_G:
if (phy_rev > 9)
unsupported = 1;
break;
#ifdef CONFIG_B43_PHY_N
case B43_PHYTYPE_N:
if (phy_rev > 9)
unsupported = 1;
break;
#endif
#ifdef CONFIG_B43_PHY_LP
case B43_PHYTYPE_LP:
if (phy_rev > 2)
unsupported = 1;
break;
#endif
#ifdef CONFIG_B43_PHY_HT
case B43_PHYTYPE_HT:
if (phy_rev > 1)
unsupported = 1;
break;
#endif
#ifdef CONFIG_B43_PHY_LCN
case B43_PHYTYPE_LCN:
if (phy_rev > 1)
unsupported = 1;
break;
#endif
default:
unsupported = 1;
}
if (unsupported) {
b43err(dev->wl, "FOUND UNSUPPORTED PHY "
"(Analog %u, Type %u, Revision %u)\n",
analog_type, phy_type, phy_rev);
return -EOPNOTSUPP;
}
b43dbg(dev->wl, "Found PHY: Analog %u, Type %u, Revision %u\n",
analog_type, phy_type, phy_rev);
/* Get RADIO versioning */
if (dev->dev->core_rev >= 24) {
u16 radio24[3];
for (tmp = 0; tmp < 3; tmp++) {
b43_write16(dev, B43_MMIO_RADIO24_CONTROL, tmp);
radio24[tmp] = b43_read16(dev, B43_MMIO_RADIO24_DATA);
}
/* Broadcom uses "id" for our "ver" and has separated "ver" */
/* radio_ver = (radio24[0] & 0xF0) >> 4; */
radio_manuf = 0x17F;
radio_ver = (radio24[2] << 8) | radio24[1];
radio_rev = (radio24[0] & 0xF);
} else {
if (dev->dev->chip_id == 0x4317) {
if (dev->dev->chip_rev == 0)
tmp = 0x3205017F;
else if (dev->dev->chip_rev == 1)
tmp = 0x4205017F;
else
tmp = 0x5205017F;
} else {
b43_write16(dev, B43_MMIO_RADIO_CONTROL,
B43_RADIOCTL_ID);
tmp = b43_read16(dev, B43_MMIO_RADIO_DATA_LOW);
b43_write16(dev, B43_MMIO_RADIO_CONTROL,
B43_RADIOCTL_ID);
tmp |= (u32)b43_read16(dev, B43_MMIO_RADIO_DATA_HIGH)
<< 16;
}
radio_manuf = (tmp & 0x00000FFF);
radio_ver = (tmp & 0x0FFFF000) >> 12;
radio_rev = (tmp & 0xF0000000) >> 28;
}
if (radio_manuf != 0x17F /* Broadcom */)
unsupported = 1;
switch (phy_type) {
case B43_PHYTYPE_A:
if (radio_ver != 0x2060)
unsupported = 1;
if (radio_rev != 1)
unsupported = 1;
if (radio_manuf != 0x17F)
unsupported = 1;
break;
case B43_PHYTYPE_B:
if ((radio_ver & 0xFFF0) != 0x2050)
unsupported = 1;
break;
case B43_PHYTYPE_G:
if (radio_ver != 0x2050)
unsupported = 1;
break;
case B43_PHYTYPE_N:
if (radio_ver != 0x2055 && radio_ver != 0x2056)
unsupported = 1;
break;
case B43_PHYTYPE_LP:
if (radio_ver != 0x2062 && radio_ver != 0x2063)
unsupported = 1;
break;
case B43_PHYTYPE_HT:
if (radio_ver != 0x2059)
unsupported = 1;
break;
case B43_PHYTYPE_LCN:
if (radio_ver != 0x2064)
unsupported = 1;
break;
default:
B43_WARN_ON(1);
}
if (unsupported) {
b43err(dev->wl, "FOUND UNSUPPORTED RADIO "
"(Manuf 0x%X, Version 0x%X, Revision %u)\n",
radio_manuf, radio_ver, radio_rev);
return -EOPNOTSUPP;
}
b43dbg(dev->wl, "Found Radio: Manuf 0x%X, Version 0x%X, Revision %u\n",
radio_manuf, radio_ver, radio_rev);
phy->radio_manuf = radio_manuf;
phy->radio_ver = radio_ver;
phy->radio_rev = radio_rev;
phy->analog = analog_type;
phy->type = phy_type;
phy->rev = phy_rev;
return 0;
}
static void setup_struct_phy_for_init(struct b43_wldev *dev,
struct b43_phy *phy)
{
phy->hardware_power_control = !!modparam_hwpctl;
phy->next_txpwr_check_time = jiffies;
/* PHY TX errors counter. */
atomic_set(&phy->txerr_cnt, B43_PHY_TX_BADNESS_LIMIT);
#if B43_DEBUG
phy->phy_locked = false;
phy->radio_locked = false;
#endif
}
static void setup_struct_wldev_for_init(struct b43_wldev *dev)
{
dev->dfq_valid = false;
/* Assume the radio is enabled. If it's not enabled, the state will
* immediately get fixed on the first periodic work run. */
dev->radio_hw_enable = true;
/* Stats */
memset(&dev->stats, 0, sizeof(dev->stats));
setup_struct_phy_for_init(dev, &dev->phy);
/* IRQ related flags */
dev->irq_reason = 0;
memset(dev->dma_reason, 0, sizeof(dev->dma_reason));
dev->irq_mask = B43_IRQ_MASKTEMPLATE;
if (b43_modparam_verbose < B43_VERBOSITY_DEBUG)
dev->irq_mask &= ~B43_IRQ_PHY_TXERR;
dev->mac_suspended = 1;
/* Noise calculation context */
memset(&dev->noisecalc, 0, sizeof(dev->noisecalc));
}
static void b43_bluetooth_coext_enable(struct b43_wldev *dev)
{
struct ssb_sprom *sprom = dev->dev->bus_sprom;
u64 hf;
if (!modparam_btcoex)
return;
if (!(sprom->boardflags_lo & B43_BFL_BTCOEXIST))
return;
if (dev->phy.type != B43_PHYTYPE_B && !dev->phy.gmode)
return;
hf = b43_hf_read(dev);
if (sprom->boardflags_lo & B43_BFL_BTCMOD)
hf |= B43_HF_BTCOEXALT;
else
hf |= B43_HF_BTCOEX;
b43_hf_write(dev, hf);
}
static void b43_bluetooth_coext_disable(struct b43_wldev *dev)
{
if (!modparam_btcoex)
return;
//TODO
}
static void b43_imcfglo_timeouts_workaround(struct b43_wldev *dev)
{
struct ssb_bus *bus;
u32 tmp;
if (dev->dev->bus_type != B43_BUS_SSB)
return;
bus = dev->dev->sdev->bus;
if ((bus->chip_id == 0x4311 && bus->chip_rev == 2) ||
(bus->chip_id == 0x4312)) {
tmp = ssb_read32(dev->dev->sdev, SSB_IMCFGLO);
tmp &= ~SSB_IMCFGLO_REQTO;
tmp &= ~SSB_IMCFGLO_SERTO;
tmp |= 0x3;
ssb_write32(dev->dev->sdev, SSB_IMCFGLO, tmp);
ssb_commit_settings(bus);
}
}
static void b43_set_synth_pu_delay(struct b43_wldev *dev, bool idle)
{
u16 pu_delay;
/* The time value is in microseconds. */
if (dev->phy.type == B43_PHYTYPE_A)
pu_delay = 3700;
else
pu_delay = 1050;
if (b43_is_mode(dev->wl, NL80211_IFTYPE_ADHOC) || idle)
pu_delay = 500;
if ((dev->phy.radio_ver == 0x2050) && (dev->phy.radio_rev == 8))
pu_delay = max(pu_delay, (u16)2400);
b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_SPUWKUP, pu_delay);
}
/* Set the TSF CFP pre-TargetBeaconTransmissionTime. */
static void b43_set_pretbtt(struct b43_wldev *dev)
{
u16 pretbtt;
/* The time value is in microseconds. */
if (b43_is_mode(dev->wl, NL80211_IFTYPE_ADHOC)) {
pretbtt = 2;
} else {
if (dev->phy.type == B43_PHYTYPE_A)
pretbtt = 120;
else
pretbtt = 250;
}
b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRETBTT, pretbtt);
b43_write16(dev, B43_MMIO_TSF_CFP_PRETBTT, pretbtt);
}
/* Shutdown a wireless core */
/* Locking: wl->mutex */
static void b43_wireless_core_exit(struct b43_wldev *dev)
{
B43_WARN_ON(dev && b43_status(dev) > B43_STAT_INITIALIZED);
if (!dev || b43_status(dev) != B43_STAT_INITIALIZED)
return;
/* Unregister HW RNG driver */
b43_rng_exit(dev->wl);
b43_set_status(dev, B43_STAT_UNINIT);
/* Stop the microcode PSM. */
b43_maskset32(dev, B43_MMIO_MACCTL, ~B43_MACCTL_PSM_RUN,
B43_MACCTL_PSM_JMP0);
b43_dma_free(dev);
b43_pio_free(dev);
b43_chip_exit(dev);
dev->phy.ops->switch_analog(dev, 0);
if (dev->wl->current_beacon) {
dev_kfree_skb_any(dev->wl->current_beacon);
dev->wl->current_beacon = NULL;
}
b43_device_disable(dev, 0);
b43_bus_may_powerdown(dev);
}
/* Initialize a wireless core */
static int b43_wireless_core_init(struct b43_wldev *dev)
{
struct ssb_sprom *sprom = dev->dev->bus_sprom;
struct b43_phy *phy = &dev->phy;
int err;
u64 hf;
B43_WARN_ON(b43_status(dev) != B43_STAT_UNINIT);
err = b43_bus_powerup(dev, 0);
if (err)
goto out;
if (!b43_device_is_enabled(dev))
b43_wireless_core_reset(dev, phy->gmode);
/* Reset all data structures. */
setup_struct_wldev_for_init(dev);
phy->ops->prepare_structs(dev);
/* Enable IRQ routing to this device. */
switch (dev->dev->bus_type) {
#ifdef CONFIG_B43_BCMA
case B43_BUS_BCMA:
bcma_core_pci_irq_ctl(&dev->dev->bdev->bus->drv_pci,
dev->dev->bdev, true);
break;
#endif
#ifdef CONFIG_B43_SSB
case B43_BUS_SSB:
ssb_pcicore_dev_irqvecs_enable(&dev->dev->sdev->bus->pcicore,
dev->dev->sdev);
break;
#endif
}
b43_imcfglo_timeouts_workaround(dev);
b43_bluetooth_coext_disable(dev);
if (phy->ops->prepare_hardware) {
err = phy->ops->prepare_hardware(dev);
if (err)
goto err_busdown;
}
err = b43_chip_init(dev);
if (err)
goto err_busdown;
b43_shm_write16(dev, B43_SHM_SHARED,
B43_SHM_SH_WLCOREREV, dev->dev->core_rev);
hf = b43_hf_read(dev);
if (phy->type == B43_PHYTYPE_G) {
hf |= B43_HF_SYMW;
if (phy->rev == 1)
hf |= B43_HF_GDCW;
if (sprom->boardflags_lo & B43_BFL_PACTRL)
hf |= B43_HF_OFDMPABOOST;
}
if (phy->radio_ver == 0x2050) {
if (phy->radio_rev == 6)
hf |= B43_HF_4318TSSI;
if (phy->radio_rev < 6)
hf |= B43_HF_VCORECALC;
}
if (sprom->boardflags_lo & B43_BFL_XTAL_NOSLOW)
hf |= B43_HF_DSCRQ; /* Disable slowclock requests from ucode. */
#ifdef CONFIG_SSB_DRIVER_PCICORE
if (dev->dev->bus_type == B43_BUS_SSB &&
dev->dev->sdev->bus->bustype == SSB_BUSTYPE_PCI &&
dev->dev->sdev->bus->pcicore.dev->id.revision <= 10)
hf |= B43_HF_PCISCW; /* PCI slow clock workaround. */
#endif
hf &= ~B43_HF_SKCFPUP;
b43_hf_write(dev, hf);
b43_set_retry_limits(dev, B43_DEFAULT_SHORT_RETRY_LIMIT,
B43_DEFAULT_LONG_RETRY_LIMIT);
b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_SFFBLIM, 3);
b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_LFFBLIM, 2);
/* Disable sending probe responses from firmware.
* Setting the MaxTime to one usec will always trigger
* a timeout, so we never send any probe resp.
* A timeout of zero is infinite. */
b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRMAXTIME, 1);
b43_rate_memory_init(dev);
b43_set_phytxctl_defaults(dev);
/* Minimum Contention Window */
if (phy->type == B43_PHYTYPE_B)
b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MINCONT, 0x1F);
else
b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MINCONT, 0xF);
/* Maximum Contention Window */
b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MAXCONT, 0x3FF);
if (b43_bus_host_is_pcmcia(dev->dev) ||
b43_bus_host_is_sdio(dev->dev)) {
dev->__using_pio_transfers = true;
err = b43_pio_init(dev);
} else if (dev->use_pio) {
b43warn(dev->wl, "Forced PIO by use_pio module parameter. "
"This should not be needed and will result in lower "
"performance.\n");
dev->__using_pio_transfers = true;
err = b43_pio_init(dev);
} else {
dev->__using_pio_transfers = false;
err = b43_dma_init(dev);
}
if (err)
goto err_chip_exit;
b43_qos_init(dev);
b43_set_synth_pu_delay(dev, 1);
b43_bluetooth_coext_enable(dev);
b43_bus_powerup(dev, !(sprom->boardflags_lo & B43_BFL_XTAL_NOSLOW));
b43_upload_card_macaddress(dev);
b43_security_init(dev);
ieee80211_wake_queues(dev->wl->hw);
b43_set_status(dev, B43_STAT_INITIALIZED);
/* Register HW RNG driver */
b43_rng_init(dev->wl);
out:
return err;
err_chip_exit:
b43_chip_exit(dev);
err_busdown:
b43_bus_may_powerdown(dev);
B43_WARN_ON(b43_status(dev) != B43_STAT_UNINIT);
return err;
}
static int b43_op_add_interface(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
struct b43_wl *wl = hw_to_b43_wl(hw);
struct b43_wldev *dev;
int err = -EOPNOTSUPP;
/* TODO: allow WDS/AP devices to coexist */
if (vif->type != NL80211_IFTYPE_AP &&
vif->type != NL80211_IFTYPE_MESH_POINT &&
vif->type != NL80211_IFTYPE_STATION &&
vif->type != NL80211_IFTYPE_WDS &&
vif->type != NL80211_IFTYPE_ADHOC)
return -EOPNOTSUPP;
mutex_lock(&wl->mutex);
if (wl->operating)
goto out_mutex_unlock;
b43dbg(wl, "Adding Interface type %d\n", vif->type);
dev = wl->current_dev;
wl->operating = true;
wl->vif = vif;
wl->if_type = vif->type;
memcpy(wl->mac_addr, vif->addr, ETH_ALEN);
b43_adjust_opmode(dev);
b43_set_pretbtt(dev);
b43_set_synth_pu_delay(dev, 0);
b43_upload_card_macaddress(dev);
err = 0;
out_mutex_unlock:
mutex_unlock(&wl->mutex);
if (err == 0)
b43_op_bss_info_changed(hw, vif, &vif->bss_conf, ~0);
return err;
}
static void b43_op_remove_interface(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
struct b43_wl *wl = hw_to_b43_wl(hw);
struct b43_wldev *dev = wl->current_dev;
b43dbg(wl, "Removing Interface type %d\n", vif->type);
mutex_lock(&wl->mutex);
B43_WARN_ON(!wl->operating);
B43_WARN_ON(wl->vif != vif);
wl->vif = NULL;
wl->operating = false;
b43_adjust_opmode(dev);
memset(wl->mac_addr, 0, ETH_ALEN);
b43_upload_card_macaddress(dev);
mutex_unlock(&wl->mutex);
}
static int b43_op_start(struct ieee80211_hw *hw)
{
struct b43_wl *wl = hw_to_b43_wl(hw);
struct b43_wldev *dev = wl->current_dev;
int did_init = 0;
int err = 0;
/* Kill all old instance specific information to make sure
* the card won't use it in the short timeframe between start
* and mac80211 reconfiguring it. */
memset(wl->bssid, 0, ETH_ALEN);
memset(wl->mac_addr, 0, ETH_ALEN);
wl->filter_flags = 0;
wl->radiotap_enabled = false;
b43_qos_clear(wl);
wl->beacon0_uploaded = false;
wl->beacon1_uploaded = false;
wl->beacon_templates_virgin = true;
wl->radio_enabled = true;
mutex_lock(&wl->mutex);
if (b43_status(dev) < B43_STAT_INITIALIZED) {
err = b43_wireless_core_init(dev);
if (err)
goto out_mutex_unlock;
did_init = 1;
}
if (b43_status(dev) < B43_STAT_STARTED) {
err = b43_wireless_core_start(dev);
if (err) {
if (did_init)
b43_wireless_core_exit(dev);
goto out_mutex_unlock;
}
}
/* XXX: only do if device doesn't support rfkill irq */
wiphy_rfkill_start_polling(hw->wiphy);
out_mutex_unlock:
mutex_unlock(&wl->mutex);
/*
* Configuration may have been overwritten during initialization.
* Reload the configuration, but only if initialization was
* successful. Reloading the configuration after a failed init
* may hang the system.
*/
if (!err)
b43_op_config(hw, ~0);
return err;
}
static void b43_op_stop(struct ieee80211_hw *hw)
{
struct b43_wl *wl = hw_to_b43_wl(hw);
struct b43_wldev *dev = wl->current_dev;
cancel_work_sync(&(wl->beacon_update_trigger));
if (!dev)
goto out;
mutex_lock(&wl->mutex);
if (b43_status(dev) >= B43_STAT_STARTED) {
dev = b43_wireless_core_stop(dev);
if (!dev)
goto out_unlock;
}
b43_wireless_core_exit(dev);
wl->radio_enabled = false;
out_unlock:
mutex_unlock(&wl->mutex);
out:
cancel_work_sync(&(wl->txpower_adjust_work));
}
static int b43_op_beacon_set_tim(struct ieee80211_hw *hw,
struct ieee80211_sta *sta, bool set)
{
struct b43_wl *wl = hw_to_b43_wl(hw);
/* FIXME: add locking */
b43_update_templates(wl);
return 0;
}
static void b43_op_sta_notify(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
enum sta_notify_cmd notify_cmd,
struct ieee80211_sta *sta)
{
struct b43_wl *wl = hw_to_b43_wl(hw);
B43_WARN_ON(!vif || wl->vif != vif);
}
static void b43_op_sw_scan_start_notifier(struct ieee80211_hw *hw)
{
struct b43_wl *wl = hw_to_b43_wl(hw);
struct b43_wldev *dev;
mutex_lock(&wl->mutex);
dev = wl->current_dev;
if (dev && (b43_status(dev) >= B43_STAT_INITIALIZED)) {
/* Disable CFP update during scan on other channels. */
b43_hf_write(dev, b43_hf_read(dev) | B43_HF_SKCFPUP);
}
mutex_unlock(&wl->mutex);
}
static void b43_op_sw_scan_complete_notifier(struct ieee80211_hw *hw)
{
struct b43_wl *wl = hw_to_b43_wl(hw);
struct b43_wldev *dev;
mutex_lock(&wl->mutex);
dev = wl->current_dev;
if (dev && (b43_status(dev) >= B43_STAT_INITIALIZED)) {
/* Re-enable CFP update. */
b43_hf_write(dev, b43_hf_read(dev) & ~B43_HF_SKCFPUP);
}
mutex_unlock(&wl->mutex);
}
static int b43_op_get_survey(struct ieee80211_hw *hw, int idx,
struct survey_info *survey)
{
struct b43_wl *wl = hw_to_b43_wl(hw);
struct b43_wldev *dev = wl->current_dev;
struct ieee80211_conf *conf = &hw->conf;
if (idx != 0)
return -ENOENT;
survey->channel = conf->channel;
survey->filled = SURVEY_INFO_NOISE_DBM;
survey->noise = dev->stats.link_noise;
return 0;
}
static const struct ieee80211_ops b43_hw_ops = {
.tx = b43_op_tx,
.conf_tx = b43_op_conf_tx,
.add_interface = b43_op_add_interface,
.remove_interface = b43_op_remove_interface,
.config = b43_op_config,
.bss_info_changed = b43_op_bss_info_changed,
.configure_filter = b43_op_configure_filter,
.set_key = b43_op_set_key,
.update_tkip_key = b43_op_update_tkip_key,
.get_stats = b43_op_get_stats,
.get_tsf = b43_op_get_tsf,
.set_tsf = b43_op_set_tsf,
.start = b43_op_start,
.stop = b43_op_stop,
.set_tim = b43_op_beacon_set_tim,
.sta_notify = b43_op_sta_notify,
.sw_scan_start = b43_op_sw_scan_start_notifier,
.sw_scan_complete = b43_op_sw_scan_complete_notifier,
.get_survey = b43_op_get_survey,
.rfkill_poll = b43_rfkill_poll,
};
/* Hard-reset the chip. Do not call this directly.
* Use b43_controller_restart()
*/
static void b43_chip_reset(struct work_struct *work)
{
struct b43_wldev *dev =
container_of(work, struct b43_wldev, restart_work);
struct b43_wl *wl = dev->wl;
int err = 0;
int prev_status;
mutex_lock(&wl->mutex);
prev_status = b43_status(dev);
/* Bring the device down... */
if (prev_status >= B43_STAT_STARTED) {
dev = b43_wireless_core_stop(dev);
if (!dev) {
err = -ENODEV;
goto out;
}
}
if (prev_status >= B43_STAT_INITIALIZED)
b43_wireless_core_exit(dev);
/* ...and up again. */
if (prev_status >= B43_STAT_INITIALIZED) {
err = b43_wireless_core_init(dev);
if (err)
goto out;
}
if (prev_status >= B43_STAT_STARTED) {
err = b43_wireless_core_start(dev);
if (err) {
b43_wireless_core_exit(dev);
goto out;
}
}
out:
if (err)
wl->current_dev = NULL; /* Failed to init the dev. */
mutex_unlock(&wl->mutex);
if (err) {
b43err(wl, "Controller restart FAILED\n");
return;
}
/* reload configuration */
b43_op_config(wl->hw, ~0);
if (wl->vif)
b43_op_bss_info_changed(wl->hw, wl->vif, &wl->vif->bss_conf, ~0);
b43info(wl, "Controller restarted\n");
}
static int b43_setup_bands(struct b43_wldev *dev,
bool have_2ghz_phy, bool have_5ghz_phy)
{
struct ieee80211_hw *hw = dev->wl->hw;
if (have_2ghz_phy)
hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &b43_band_2GHz;
if (dev->phy.type == B43_PHYTYPE_N) {
if (have_5ghz_phy)
hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &b43_band_5GHz_nphy;
} else {
if (have_5ghz_phy)
hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &b43_band_5GHz_aphy;
}
dev->phy.supports_2ghz = have_2ghz_phy;
dev->phy.supports_5ghz = have_5ghz_phy;
return 0;
}
static void b43_wireless_core_detach(struct b43_wldev *dev)
{
/* We release firmware that late to not be required to re-request
* is all the time when we reinit the core. */
b43_release_firmware(dev);
b43_phy_free(dev);
}
static int b43_wireless_core_attach(struct b43_wldev *dev)
{
struct b43_wl *wl = dev->wl;
struct pci_dev *pdev = NULL;
int err;
u32 tmp;
bool have_2ghz_phy = false, have_5ghz_phy = false;
/* Do NOT do any device initialization here.
* Do it in wireless_core_init() instead.
* This function is for gathering basic information about the HW, only.
* Also some structs may be set up here. But most likely you want to have
* that in core_init(), too.
*/
#ifdef CONFIG_B43_SSB
if (dev->dev->bus_type == B43_BUS_SSB &&
dev->dev->sdev->bus->bustype == SSB_BUSTYPE_PCI)
pdev = dev->dev->sdev->bus->host_pci;
#endif
err = b43_bus_powerup(dev, 0);
if (err) {
b43err(wl, "Bus powerup failed\n");
goto out;
}
/* Get the PHY type. */
switch (dev->dev->bus_type) {
#ifdef CONFIG_B43_BCMA
case B43_BUS_BCMA:
tmp = bcma_aread32(dev->dev->bdev, BCMA_IOST);
have_2ghz_phy = !!(tmp & B43_BCMA_IOST_2G_PHY);
have_5ghz_phy = !!(tmp & B43_BCMA_IOST_5G_PHY);
break;
#endif
#ifdef CONFIG_B43_SSB
case B43_BUS_SSB:
if (dev->dev->core_rev >= 5) {
tmp = ssb_read32(dev->dev->sdev, SSB_TMSHIGH);
have_2ghz_phy = !!(tmp & B43_TMSHIGH_HAVE_2GHZ_PHY);
have_5ghz_phy = !!(tmp & B43_TMSHIGH_HAVE_5GHZ_PHY);
} else
B43_WARN_ON(1);
break;
#endif
}
dev->phy.gmode = have_2ghz_phy;
dev->phy.radio_on = true;
b43_wireless_core_reset(dev, dev->phy.gmode);
err = b43_phy_versioning(dev);
if (err)
goto err_powerdown;
/* Check if this device supports multiband. */
if (!pdev ||
(pdev->device != 0x4312 &&
pdev->device != 0x4319 && pdev->device != 0x4324)) {
/* No multiband support. */
have_2ghz_phy = false;
have_5ghz_phy = false;
switch (dev->phy.type) {
case B43_PHYTYPE_A:
have_5ghz_phy = true;
break;
case B43_PHYTYPE_LP: //FIXME not always!
#if 0 //FIXME enabling 5GHz causes a NULL pointer dereference
have_5ghz_phy = 1;
#endif
case B43_PHYTYPE_G:
case B43_PHYTYPE_N:
case B43_PHYTYPE_HT:
case B43_PHYTYPE_LCN:
have_2ghz_phy = true;
break;
default:
B43_WARN_ON(1);
}
}
if (dev->phy.type == B43_PHYTYPE_A) {
/* FIXME */
b43err(wl, "IEEE 802.11a devices are unsupported\n");
err = -EOPNOTSUPP;
goto err_powerdown;
}
if (1 /* disable A-PHY */) {
/* FIXME: For now we disable the A-PHY on multi-PHY devices. */
if (dev->phy.type != B43_PHYTYPE_N &&
dev->phy.type != B43_PHYTYPE_LP) {
have_2ghz_phy = true;
have_5ghz_phy = false;
}
}
err = b43_phy_allocate(dev);
if (err)
goto err_powerdown;
dev->phy.gmode = have_2ghz_phy;
b43_wireless_core_reset(dev, dev->phy.gmode);
err = b43_validate_chipaccess(dev);
if (err)
goto err_phy_free;
err = b43_setup_bands(dev, have_2ghz_phy, have_5ghz_phy);
if (err)
goto err_phy_free;
/* Now set some default "current_dev" */
if (!wl->current_dev)
wl->current_dev = dev;
INIT_WORK(&dev->restart_work, b43_chip_reset);
dev->phy.ops->switch_analog(dev, 0);
b43_device_disable(dev, 0);
b43_bus_may_powerdown(dev);
out:
return err;
err_phy_free:
b43_phy_free(dev);
err_powerdown:
b43_bus_may_powerdown(dev);
return err;
}
static void b43_one_core_detach(struct b43_bus_dev *dev)
{
struct b43_wldev *wldev;
struct b43_wl *wl;
/* Do not cancel ieee80211-workqueue based work here.
* See comment in b43_remove(). */
wldev = b43_bus_get_wldev(dev);
wl = wldev->wl;
b43_debugfs_remove_device(wldev);
b43_wireless_core_detach(wldev);
list_del(&wldev->list);
wl->nr_devs--;
b43_bus_set_wldev(dev, NULL);
kfree(wldev);
}
static int b43_one_core_attach(struct b43_bus_dev *dev, struct b43_wl *wl)
{
struct b43_wldev *wldev;
int err = -ENOMEM;
wldev = kzalloc(sizeof(*wldev), GFP_KERNEL);
if (!wldev)
goto out;
wldev->use_pio = b43_modparam_pio;
wldev->dev = dev;
wldev->wl = wl;
b43_set_status(wldev, B43_STAT_UNINIT);
wldev->bad_frames_preempt = modparam_bad_frames_preempt;
INIT_LIST_HEAD(&wldev->list);
err = b43_wireless_core_attach(wldev);
if (err)
goto err_kfree_wldev;
list_add(&wldev->list, &wl->devlist);
wl->nr_devs++;
b43_bus_set_wldev(dev, wldev);
b43_debugfs_add_device(wldev);
out:
return err;
err_kfree_wldev:
kfree(wldev);
return err;
}
#define IS_PDEV(pdev, _vendor, _device, _subvendor, _subdevice) ( \
(pdev->vendor == PCI_VENDOR_ID_##_vendor) && \
(pdev->device == _device) && \
(pdev->subsystem_vendor == PCI_VENDOR_ID_##_subvendor) && \
(pdev->subsystem_device == _subdevice) )
static void b43_sprom_fixup(struct ssb_bus *bus)
{
struct pci_dev *pdev;
/* boardflags workarounds */
if (bus->boardinfo.vendor == SSB_BOARDVENDOR_DELL &&
bus->chip_id == 0x4301 && bus->sprom.board_rev == 0x74)
bus->sprom.boardflags_lo |= B43_BFL_BTCOEXIST;
if (bus->boardinfo.vendor == PCI_VENDOR_ID_APPLE &&
bus->boardinfo.type == 0x4E && bus->sprom.board_rev > 0x40)
bus->sprom.boardflags_lo |= B43_BFL_PACTRL;
if (bus->bustype == SSB_BUSTYPE_PCI) {
pdev = bus->host_pci;
if (IS_PDEV(pdev, BROADCOM, 0x4318, ASUSTEK, 0x100F) ||
IS_PDEV(pdev, BROADCOM, 0x4320, DELL, 0x0003) ||
IS_PDEV(pdev, BROADCOM, 0x4320, HP, 0x12f8) ||
IS_PDEV(pdev, BROADCOM, 0x4320, LINKSYS, 0x0015) ||
IS_PDEV(pdev, BROADCOM, 0x4320, LINKSYS, 0x0014) ||
IS_PDEV(pdev, BROADCOM, 0x4320, LINKSYS, 0x0013) ||
IS_PDEV(pdev, BROADCOM, 0x4320, MOTOROLA, 0x7010))
bus->sprom.boardflags_lo &= ~B43_BFL_BTCOEXIST;
}
}
static void b43_wireless_exit(struct b43_bus_dev *dev, struct b43_wl *wl)
{
struct ieee80211_hw *hw = wl->hw;
ssb_set_devtypedata(dev->sdev, NULL);
ieee80211_free_hw(hw);
}
static struct b43_wl *b43_wireless_init(struct b43_bus_dev *dev)
{
struct ssb_sprom *sprom = dev->bus_sprom;
struct ieee80211_hw *hw;
struct b43_wl *wl;
char chip_name[6];
int queue_num;
hw = ieee80211_alloc_hw(sizeof(*wl), &b43_hw_ops);
if (!hw) {
b43err(NULL, "Could not allocate ieee80211 device\n");
return ERR_PTR(-ENOMEM);
}
wl = hw_to_b43_wl(hw);
/* fill hw info */
hw->flags = IEEE80211_HW_RX_INCLUDES_FCS |
IEEE80211_HW_SIGNAL_DBM;
hw->wiphy->interface_modes =
BIT(NL80211_IFTYPE_AP) |
BIT(NL80211_IFTYPE_MESH_POINT) |
BIT(NL80211_IFTYPE_STATION) |
BIT(NL80211_IFTYPE_WDS) |
BIT(NL80211_IFTYPE_ADHOC);
hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
wl->hw_registred = false;
hw->max_rates = 2;
SET_IEEE80211_DEV(hw, dev->dev);
if (is_valid_ether_addr(sprom->et1mac))
SET_IEEE80211_PERM_ADDR(hw, sprom->et1mac);
else
SET_IEEE80211_PERM_ADDR(hw, sprom->il0mac);
/* Initialize struct b43_wl */
wl->hw = hw;
mutex_init(&wl->mutex);
spin_lock_init(&wl->hardirq_lock);
INIT_LIST_HEAD(&wl->devlist);
INIT_WORK(&wl->beacon_update_trigger, b43_beacon_update_trigger_work);
INIT_WORK(&wl->txpower_adjust_work, b43_phy_txpower_adjust_work);
INIT_WORK(&wl->tx_work, b43_tx_work);
/* Initialize queues and flags. */
for (queue_num = 0; queue_num < B43_QOS_QUEUE_NUM; queue_num++) {
skb_queue_head_init(&wl->tx_queue[queue_num]);
wl->tx_queue_stopped[queue_num] = 0;
}
snprintf(chip_name, ARRAY_SIZE(chip_name),
(dev->chip_id > 0x9999) ? "%d" : "%04X", dev->chip_id);
b43info(wl, "Broadcom %s WLAN found (core revision %u)\n", chip_name,
dev->core_rev);
return wl;
}
#ifdef CONFIG_B43_BCMA
static int b43_bcma_probe(struct bcma_device *core)
{
struct b43_bus_dev *dev;
struct b43_wl *wl;
int err;
dev = b43_bus_dev_bcma_init(core);
if (!dev)
return -ENODEV;
wl = b43_wireless_init(dev);
if (IS_ERR(wl)) {
err = PTR_ERR(wl);
goto bcma_out;
}
err = b43_one_core_attach(dev, wl);
if (err)
goto bcma_err_wireless_exit;
/* setup and start work to load firmware */
INIT_WORK(&wl->firmware_load, b43_request_firmware);
schedule_work(&wl->firmware_load);
bcma_out:
return err;
bcma_err_wireless_exit:
ieee80211_free_hw(wl->hw);
return err;
}
static void b43_bcma_remove(struct bcma_device *core)
{
struct b43_wldev *wldev = bcma_get_drvdata(core);
struct b43_wl *wl = wldev->wl;
/* We must cancel any work here before unregistering from ieee80211,
* as the ieee80211 unreg will destroy the workqueue. */
cancel_work_sync(&wldev->restart_work);
B43_WARN_ON(!wl);
if (wl->current_dev == wldev && wl->hw_registred) {
b43_leds_stop(wldev);
ieee80211_unregister_hw(wl->hw);
}
b43_one_core_detach(wldev->dev);
b43_leds_unregister(wl);
ieee80211_free_hw(wl->hw);
}
static struct bcma_driver b43_bcma_driver = {
.name = KBUILD_MODNAME,
.id_table = b43_bcma_tbl,
.probe = b43_bcma_probe,
.remove = b43_bcma_remove,
};
#endif
#ifdef CONFIG_B43_SSB
static
int b43_ssb_probe(struct ssb_device *sdev, const struct ssb_device_id *id)
{
struct b43_bus_dev *dev;
struct b43_wl *wl;
int err;
int first = 0;
dev = b43_bus_dev_ssb_init(sdev);
if (!dev)
return -ENOMEM;
wl = ssb_get_devtypedata(sdev);
if (!wl) {
/* Probing the first core. Must setup common struct b43_wl */
first = 1;
b43_sprom_fixup(sdev->bus);
wl = b43_wireless_init(dev);
if (IS_ERR(wl)) {
err = PTR_ERR(wl);
goto out;
}
ssb_set_devtypedata(sdev, wl);
B43_WARN_ON(ssb_get_devtypedata(sdev) != wl);
}
err = b43_one_core_attach(dev, wl);
if (err)
goto err_wireless_exit;
/* setup and start work to load firmware */
INIT_WORK(&wl->firmware_load, b43_request_firmware);
schedule_work(&wl->firmware_load);
out:
return err;
err_wireless_exit:
if (first)
b43_wireless_exit(dev, wl);
return err;
}
static void b43_ssb_remove(struct ssb_device *sdev)
{
struct b43_wl *wl = ssb_get_devtypedata(sdev);
struct b43_wldev *wldev = ssb_get_drvdata(sdev);
struct b43_bus_dev *dev = wldev->dev;
/* We must cancel any work here before unregistering from ieee80211,
* as the ieee80211 unreg will destroy the workqueue. */
cancel_work_sync(&wldev->restart_work);
B43_WARN_ON(!wl);
if (wl->current_dev == wldev && wl->hw_registred) {
b43_leds_stop(wldev);
ieee80211_unregister_hw(wl->hw);
}
b43_one_core_detach(dev);
if (list_empty(&wl->devlist)) {
b43_leds_unregister(wl);
/* Last core on the chip unregistered.
* We can destroy common struct b43_wl.
*/
b43_wireless_exit(dev, wl);
}
}
static struct ssb_driver b43_ssb_driver = {
.name = KBUILD_MODNAME,
.id_table = b43_ssb_tbl,
.probe = b43_ssb_probe,
.remove = b43_ssb_remove,
};
#endif /* CONFIG_B43_SSB */
/* Perform a hardware reset. This can be called from any context. */
void b43_controller_restart(struct b43_wldev *dev, const char *reason)
{
/* Must avoid requeueing, if we are in shutdown. */
if (b43_status(dev) < B43_STAT_INITIALIZED)
return;
b43info(dev->wl, "Controller RESET (%s) ...\n", reason);
ieee80211_queue_work(dev->wl->hw, &dev->restart_work);
}
static void b43_print_driverinfo(void)
{
const char *feat_pci = "", *feat_pcmcia = "", *feat_nphy = "",
*feat_leds = "", *feat_sdio = "";
#ifdef CONFIG_B43_PCI_AUTOSELECT
feat_pci = "P";
#endif
#ifdef CONFIG_B43_PCMCIA
feat_pcmcia = "M";
#endif
#ifdef CONFIG_B43_PHY_N
feat_nphy = "N";
#endif
#ifdef CONFIG_B43_LEDS
feat_leds = "L";
#endif
#ifdef CONFIG_B43_SDIO
feat_sdio = "S";
#endif
printk(KERN_INFO "Broadcom 43xx driver loaded "
"[ Features: %s%s%s%s%s ]\n",
feat_pci, feat_pcmcia, feat_nphy,
feat_leds, feat_sdio);
}
static int __init b43_init(void)
{
int err;
b43_debugfs_init();
err = b43_pcmcia_init();
if (err)
goto err_dfs_exit;
err = b43_sdio_init();
if (err)
goto err_pcmcia_exit;
#ifdef CONFIG_B43_BCMA
err = bcma_driver_register(&b43_bcma_driver);
if (err)
goto err_sdio_exit;
#endif
#ifdef CONFIG_B43_SSB
err = ssb_driver_register(&b43_ssb_driver);
if (err)
goto err_bcma_driver_exit;
#endif
b43_print_driverinfo();
return err;
#ifdef CONFIG_B43_SSB
err_bcma_driver_exit:
#endif
#ifdef CONFIG_B43_BCMA
bcma_driver_unregister(&b43_bcma_driver);
err_sdio_exit:
#endif
b43_sdio_exit();
err_pcmcia_exit:
b43_pcmcia_exit();
err_dfs_exit:
b43_debugfs_exit();
return err;
}
static void __exit b43_exit(void)
{
#ifdef CONFIG_B43_SSB
ssb_driver_unregister(&b43_ssb_driver);
#endif
#ifdef CONFIG_B43_BCMA
bcma_driver_unregister(&b43_bcma_driver);
#endif
b43_sdio_exit();
b43_pcmcia_exit();
b43_debugfs_exit();
}
module_init(b43_init)
module_exit(b43_exit)
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