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kernel-fxtec-pro1x/drivers/net/wireless/b43/main.c
Stefano Brivio a19d12d742 b43: fix shared IRQ race condition 
Fix an IRQ race condition in b43. If we call b43_stop_wireless_core(), it
will set the status of the device to INITIALIZED and the IRQ handler won't
care any longer about IRQs, thus the kernel will disable the IRQ if it's
shared (unless we boot it with the 'irqpoll' option). So we must disable
IRQs before changing the device status.

Signed-off-by: Stefano Brivio <stefano.brivio@polimi.it>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2007-11-10 04:25:13 -05:00

4070 lines
102 KiB
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/*
Broadcom B43 wireless driver
Copyright (c) 2005 Martin Langer <martin-langer@gmx.de>
Copyright (c) 2005 Stefano Brivio <st3@riseup.net>
Copyright (c) 2005, 2006 Michael Buesch <mb@bu3sch.de>
Copyright (c) 2005 Danny van Dyk <kugelfang@gentoo.org>
Copyright (c) 2005 Andreas Jaggi <andreas.jaggi@waterwave.ch>
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/moduleparam.h>
#include <linux/if_arp.h>
#include <linux/etherdevice.h>
#include <linux/version.h>
#include <linux/firmware.h>
#include <linux/wireless.h>
#include <linux/workqueue.h>
#include <linux/skbuff.h>
#include <linux/dma-mapping.h>
#include <asm/unaligned.h>
#include "b43.h"
#include "main.h"
#include "debugfs.h"
#include "phy.h"
#include "dma.h"
#include "pio.h"
#include "sysfs.h"
#include "xmit.h"
#include "lo.h"
#include "pcmcia.h"
MODULE_DESCRIPTION("Broadcom B43 wireless driver");
MODULE_AUTHOR("Martin Langer");
MODULE_AUTHOR("Stefano Brivio");
MODULE_AUTHOR("Michael Buesch");
MODULE_LICENSE("GPL");
extern char *nvram_get(char *name);
#if defined(CONFIG_B43_DMA) && defined(CONFIG_B43_PIO)
static int modparam_pio;
module_param_named(pio, modparam_pio, int, 0444);
MODULE_PARM_DESC(pio, "enable(1) / disable(0) PIO mode");
#elif defined(CONFIG_B43_DMA)
# define modparam_pio 0
#elif defined(CONFIG_B43_PIO)
# define modparam_pio 1
#endif
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 int modparam_short_retry = B43_DEFAULT_SHORT_RETRY_LIMIT;
module_param_named(short_retry, modparam_short_retry, int, 0444);
MODULE_PARM_DESC(short_retry, "Short-Retry-Limit (0 - 15)");
static int modparam_long_retry = B43_DEFAULT_LONG_RETRY_LIMIT;
module_param_named(long_retry, modparam_long_retry, int, 0444);
MODULE_PARM_DESC(long_retry, "Long-Retry-Limit (0 - 15)");
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 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_DEVTABLE_END
};
MODULE_DEVICE_TABLE(ssb, b43_ssb_tbl);
/* 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) \
{ \
.rate = B43_RATE_TO_BASE100KBPS(_rateid), \
.val = (_rateid), \
.val2 = (_rateid), \
.flags = (_flags), \
}
static struct ieee80211_rate __b43_ratetable[] = {
RATETAB_ENT(B43_CCK_RATE_1MB, IEEE80211_RATE_CCK),
RATETAB_ENT(B43_CCK_RATE_2MB, IEEE80211_RATE_CCK_2),
RATETAB_ENT(B43_CCK_RATE_5MB, IEEE80211_RATE_CCK_2),
RATETAB_ENT(B43_CCK_RATE_11MB, IEEE80211_RATE_CCK_2),
RATETAB_ENT(B43_OFDM_RATE_6MB, IEEE80211_RATE_OFDM),
RATETAB_ENT(B43_OFDM_RATE_9MB, IEEE80211_RATE_OFDM),
RATETAB_ENT(B43_OFDM_RATE_12MB, IEEE80211_RATE_OFDM),
RATETAB_ENT(B43_OFDM_RATE_18MB, IEEE80211_RATE_OFDM),
RATETAB_ENT(B43_OFDM_RATE_24MB, IEEE80211_RATE_OFDM),
RATETAB_ENT(B43_OFDM_RATE_36MB, IEEE80211_RATE_OFDM),
RATETAB_ENT(B43_OFDM_RATE_48MB, IEEE80211_RATE_OFDM),
RATETAB_ENT(B43_OFDM_RATE_54MB, IEEE80211_RATE_OFDM),
};
#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 CHANTAB_ENT(_chanid, _freq) \
{ \
.chan = (_chanid), \
.freq = (_freq), \
.val = (_chanid), \
.flag = IEEE80211_CHAN_W_SCAN | \
IEEE80211_CHAN_W_ACTIVE_SCAN | \
IEEE80211_CHAN_W_IBSS, \
.power_level = 0xFF, \
.antenna_max = 0xFF, \
}
static struct ieee80211_channel b43_bg_chantable[] = {
CHANTAB_ENT(1, 2412),
CHANTAB_ENT(2, 2417),
CHANTAB_ENT(3, 2422),
CHANTAB_ENT(4, 2427),
CHANTAB_ENT(5, 2432),
CHANTAB_ENT(6, 2437),
CHANTAB_ENT(7, 2442),
CHANTAB_ENT(8, 2447),
CHANTAB_ENT(9, 2452),
CHANTAB_ENT(10, 2457),
CHANTAB_ENT(11, 2462),
CHANTAB_ENT(12, 2467),
CHANTAB_ENT(13, 2472),
CHANTAB_ENT(14, 2484),
};
#define b43_bg_chantable_size ARRAY_SIZE(b43_bg_chantable)
static struct ieee80211_channel b43_a_chantable[] = {
CHANTAB_ENT(36, 5180),
CHANTAB_ENT(40, 5200),
CHANTAB_ENT(44, 5220),
CHANTAB_ENT(48, 5240),
CHANTAB_ENT(52, 5260),
CHANTAB_ENT(56, 5280),
CHANTAB_ENT(60, 5300),
CHANTAB_ENT(64, 5320),
CHANTAB_ENT(149, 5745),
CHANTAB_ENT(153, 5765),
CHANTAB_ENT(157, 5785),
CHANTAB_ENT(161, 5805),
CHANTAB_ENT(165, 5825),
};
#define b43_a_chantable_size ARRAY_SIZE(b43_a_chantable)
static void b43_wireless_core_exit(struct b43_wldev *dev);
static int b43_wireless_core_init(struct b43_wldev *dev);
static void b43_wireless_core_stop(struct b43_wldev *dev);
static int b43_wireless_core_start(struct b43_wldev *dev);
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, ...)
{
va_list args;
if (!b43_ratelimit(wl))
return;
va_start(args, fmt);
printk(KERN_INFO "b43-%s: ",
(wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan");
vprintk(fmt, args);
va_end(args);
}
void b43err(struct b43_wl *wl, const char *fmt, ...)
{
va_list args;
if (!b43_ratelimit(wl))
return;
va_start(args, fmt);
printk(KERN_ERR "b43-%s ERROR: ",
(wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan");
vprintk(fmt, args);
va_end(args);
}
void b43warn(struct b43_wl *wl, const char *fmt, ...)
{
va_list args;
if (!b43_ratelimit(wl))
return;
va_start(args, fmt);
printk(KERN_WARNING "b43-%s warning: ",
(wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan");
vprintk(fmt, args);
va_end(args);
}
#if B43_DEBUG
void b43dbg(struct b43_wl *wl, const char *fmt, ...)
{
va_list args;
va_start(args, fmt);
printk(KERN_DEBUG "b43-%s debug: ",
(wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan");
vprintk(fmt, args);
va_end(args);
}
#endif /* DEBUG */
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);
ret <<= 16;
b43_shm_control_word(dev, routing, (offset >> 2) + 1);
ret |= b43_read16(dev, B43_MMIO_SHM_DATA);
return ret;
}
offset >>= 2;
}
b43_shm_control_word(dev, routing, offset);
ret = b43_read32(dev, B43_MMIO_SHM_DATA);
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);
return ret;
}
offset >>= 2;
}
b43_shm_control_word(dev, routing, offset);
ret = b43_read16(dev, B43_MMIO_SHM_DATA);
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);
mmiowb();
b43_write16(dev, B43_MMIO_SHM_DATA_UNALIGNED,
(value >> 16) & 0xffff);
mmiowb();
b43_shm_control_word(dev, routing, (offset >> 2) + 1);
mmiowb();
b43_write16(dev, B43_MMIO_SHM_DATA, value & 0xffff);
return;
}
offset >>= 2;
}
b43_shm_control_word(dev, routing, offset);
mmiowb();
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);
mmiowb();
b43_write16(dev, B43_MMIO_SHM_DATA_UNALIGNED, value);
return;
}
offset >>= 2;
}
b43_shm_control_word(dev, routing, offset);
mmiowb();
b43_write16(dev, B43_MMIO_SHM_DATA, value);
}
/* Read HostFlags */
u32 b43_hf_read(struct b43_wldev * dev)
{
u32 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_HOSTFLO);
return ret;
}
/* Write HostFlags */
void b43_hf_write(struct b43_wldev *dev, u32 value)
{
b43_shm_write16(dev, B43_SHM_SHARED,
B43_SHM_SH_HOSTFLO, (value & 0x0000FFFF));
b43_shm_write16(dev, B43_SHM_SHARED,
B43_SHM_SH_HOSTFHI, ((value & 0xFFFF0000) >> 16));
}
void b43_tsf_read(struct b43_wldev *dev, u64 * tsf)
{
/* We need to be careful. As we read the TSF from multiple
* registers, we should take care of register overflows.
* In theory, the whole tsf read process should be atomic.
* We try to be atomic here, by restaring the read process,
* if any of the high registers changed (overflew).
*/
if (dev->dev->id.revision >= 3) {
u32 low, high, high2;
do {
high = b43_read32(dev, B43_MMIO_REV3PLUS_TSF_HIGH);
low = b43_read32(dev, B43_MMIO_REV3PLUS_TSF_LOW);
high2 = b43_read32(dev, B43_MMIO_REV3PLUS_TSF_HIGH);
} while (unlikely(high != high2));
*tsf = high;
*tsf <<= 32;
*tsf |= low;
} else {
u64 tmp;
u16 v0, v1, v2, v3;
u16 test1, test2, test3;
do {
v3 = b43_read16(dev, B43_MMIO_TSF_3);
v2 = b43_read16(dev, B43_MMIO_TSF_2);
v1 = b43_read16(dev, B43_MMIO_TSF_1);
v0 = b43_read16(dev, B43_MMIO_TSF_0);
test3 = b43_read16(dev, B43_MMIO_TSF_3);
test2 = b43_read16(dev, B43_MMIO_TSF_2);
test1 = b43_read16(dev, B43_MMIO_TSF_1);
} while (v3 != test3 || v2 != test2 || v1 != test1);
*tsf = v3;
*tsf <<= 48;
tmp = v2;
tmp <<= 32;
*tsf |= tmp;
tmp = v1;
tmp <<= 16;
*tsf |= tmp;
*tsf |= v0;
}
}
static void b43_time_lock(struct b43_wldev *dev)
{
u32 macctl;
macctl = b43_read32(dev, B43_MMIO_MACCTL);
macctl |= B43_MACCTL_TBTTHOLD;
b43_write32(dev, B43_MMIO_MACCTL, macctl);
/* Commit the write */
b43_read32(dev, B43_MMIO_MACCTL);
}
static void b43_time_unlock(struct b43_wldev *dev)
{
u32 macctl;
macctl = b43_read32(dev, B43_MMIO_MACCTL);
macctl &= ~B43_MACCTL_TBTTHOLD;
b43_write32(dev, B43_MMIO_MACCTL, macctl);
/* Commit the write */
b43_read32(dev, B43_MMIO_MACCTL);
}
static void b43_tsf_write_locked(struct b43_wldev *dev, u64 tsf)
{
/* Be careful with the in-progress timer.
* First zero out the low register, so we have a full
* register-overflow duration to complete the operation.
*/
if (dev->dev->id.revision >= 3) {
u32 lo = (tsf & 0x00000000FFFFFFFFULL);
u32 hi = (tsf & 0xFFFFFFFF00000000ULL) >> 32;
b43_write32(dev, B43_MMIO_REV3PLUS_TSF_LOW, 0);
mmiowb();
b43_write32(dev, B43_MMIO_REV3PLUS_TSF_HIGH, hi);
mmiowb();
b43_write32(dev, B43_MMIO_REV3PLUS_TSF_LOW, lo);
} else {
u16 v0 = (tsf & 0x000000000000FFFFULL);
u16 v1 = (tsf & 0x00000000FFFF0000ULL) >> 16;
u16 v2 = (tsf & 0x0000FFFF00000000ULL) >> 32;
u16 v3 = (tsf & 0xFFFF000000000000ULL) >> 48;
b43_write16(dev, B43_MMIO_TSF_0, 0);
mmiowb();
b43_write16(dev, B43_MMIO_TSF_3, v3);
mmiowb();
b43_write16(dev, B43_MMIO_TSF_2, v2);
mmiowb();
b43_write16(dev, B43_MMIO_TSF_1, v1);
mmiowb();
b43_write16(dev, B43_MMIO_TSF_0, v0);
}
}
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. */
if (dev->phy.type != B43_PHYTYPE_G)
return;
b43_write16(dev, 0x684, 510 + slot_time);
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);
dev->short_slot = 1;
}
static void b43_short_slot_timing_disable(struct b43_wldev *dev)
{
b43_set_slot_time(dev, 20);
dev->short_slot = 0;
}
/* Enable a Generic IRQ. "mask" is the mask of which IRQs to enable.
* Returns the _previously_ enabled IRQ mask.
*/
static inline u32 b43_interrupt_enable(struct b43_wldev *dev, u32 mask)
{
u32 old_mask;
old_mask = b43_read32(dev, B43_MMIO_GEN_IRQ_MASK);
b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, old_mask | mask);
return old_mask;
}
/* Disable a Generic IRQ. "mask" is the mask of which IRQs to disable.
* Returns the _previously_ enabled IRQ mask.
*/
static inline u32 b43_interrupt_disable(struct b43_wldev *dev, u32 mask)
{
u32 old_mask;
old_mask = b43_read32(dev, B43_MMIO_GEN_IRQ_MASK);
b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, old_mask & ~mask);
return old_mask;
}
/* Synchronize IRQ top- and bottom-half.
* IRQs must be masked before calling this.
* This must not be called with the irq_lock held.
*/
static void b43_synchronize_irq(struct b43_wldev *dev)
{
synchronize_irq(dev->dev->irq);
tasklet_kill(&dev->isr_tasklet);
}
/* DummyTransmission function, as documented on
* http://bcm-specs.sipsolutions.net/DummyTransmission
*/
void b43_dummy_transmission(struct b43_wldev *dev)
{
struct b43_phy *phy = &dev->phy;
unsigned int i, max_loop;
u16 value;
u32 buffer[5] = {
0x00000000,
0x00D40000,
0x00000000,
0x01000000,
0x00000000,
};
switch (phy->type) {
case B43_PHYTYPE_A:
max_loop = 0x1E;
buffer[0] = 0x000201CC;
break;
case B43_PHYTYPE_B:
case B43_PHYTYPE_G:
max_loop = 0xFA;
buffer[0] = 0x000B846E;
break;
default:
B43_WARN_ON(1);
return;
}
for (i = 0; i < 5; i++)
b43_ram_write(dev, i * 4, buffer[i]);
/* Commit writes */
b43_read32(dev, B43_MMIO_MACCTL);
b43_write16(dev, 0x0568, 0x0000);
b43_write16(dev, 0x07C0, 0x0000);
value = ((phy->type == B43_PHYTYPE_A) ? 1 : 0);
b43_write16(dev, 0x050C, value);
b43_write16(dev, 0x0508, 0x0000);
b43_write16(dev, 0x050A, 0x0000);
b43_write16(dev, 0x054C, 0x0000);
b43_write16(dev, 0x056A, 0x0014);
b43_write16(dev, 0x0568, 0x0826);
b43_write16(dev, 0x0500, 0x0000);
b43_write16(dev, 0x0502, 0x0030);
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, 0x050E);
if (value & 0x0080)
break;
udelay(10);
}
for (i = 0x00; i < 0x0A; i++) {
value = b43_read16(dev, 0x050E);
if (value & 0x0400)
break;
udelay(10);
}
for (i = 0x00; i < 0x0A; i++) {
value = b43_read16(dev, 0x0690);
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 per_sta_keys_start = 8;
if (b43_new_kidx_api(dev))
per_sta_keys_start = 4;
B43_WARN_ON(index < per_sta_keys_start);
/* We have two default TX keys and possibly two 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 -= per_sta_keys_start;
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);
}
if (dev->dev->id.revision >= 5) {
/* Receive match transmitter address 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]);
} else {
/* RXE (Receive Engine) and
* PSM (Programmable State Machine) mechanism
*/
if (index < 8) {
/* TODO write to RCM 16, 19, 22 and 25 */
} else {
b43_shm_write32(dev, B43_SHM_SHARED,
B43_SHM_SH_PSM + (index * 6) + 0,
addrtmp[0]);
b43_shm_write16(dev, B43_SHM_SHARED,
B43_SHM_SH_PSM + (index * 6) + 4,
addrtmp[1]);
}
}
}
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 per_sta_keys_start = 8;
if (b43_new_kidx_api(dev))
per_sta_keys_start = 4;
B43_WARN_ON(index >= dev->max_nr_keys);
B43_WARN_ON(key_len > B43_SEC_KEYSIZE);
if (index >= per_sta_keys_start)
keymac_write(dev, index, NULL); /* First zero out mac. */
if (key)
memcpy(buf, key, key_len);
key_write(dev, index, algorithm, buf);
if (index >= per_sta_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 sta_keys_start;
if (key_len > B43_SEC_KEYSIZE)
return -EINVAL;
for (i = 0; i < dev->max_nr_keys; i++) {
/* Check that we don't already have this key. */
B43_WARN_ON(dev->key[i].keyconf == keyconf);
}
if (index < 0) {
/* Either pairwise key or address is 00:00:00:00:00:00
* for transmit-only keys. Search the index. */
if (b43_new_kidx_api(dev))
sta_keys_start = 4;
else
sta_keys_start = 8;
for (i = sta_keys_start; i < dev->max_nr_keys; i++) {
if (!dev->key[i].keyconf) {
/* found empty */
index = i;
break;
}
}
if (index < 0) {
b43err(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 >= dev->max_nr_keys)))
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;
for (i = 0; i < dev->max_nr_keys; i++)
b43_key_clear(dev, i);
}
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 = 1;
} else if (ps_flags & B43_PS_DISABLED) {
hwps = 0;
} 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 = 1;
} else if (ps_flags & B43_PS_ASLEEP) {
awake = 0;
} 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 = 0;
awake = 1;
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->id.revision >= 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);
}
}
}
/* Turn the Analog ON/OFF */
static void b43_switch_analog(struct b43_wldev *dev, int on)
{
b43_write16(dev, B43_MMIO_PHY0, on ? 0 : 0xF4);
}
void b43_wireless_core_reset(struct b43_wldev *dev, u32 flags)
{
u32 tmslow;
u32 macctl;
flags |= B43_TMSLOW_PHYCLKEN;
flags |= B43_TMSLOW_PHYRESET;
ssb_device_enable(dev->dev, flags);
msleep(2); /* Wait for the PLL to turn on. */
/* Now take the PHY out of Reset again */
tmslow = ssb_read32(dev->dev, SSB_TMSLOW);
tmslow |= SSB_TMSLOW_FGC;
tmslow &= ~B43_TMSLOW_PHYRESET;
ssb_write32(dev->dev, SSB_TMSLOW, tmslow);
ssb_read32(dev->dev, SSB_TMSLOW); /* flush */
msleep(1);
tmslow &= ~SSB_TMSLOW_FGC;
ssb_write32(dev->dev, SSB_TMSLOW, tmslow);
ssb_read32(dev->dev, SSB_TMSLOW); /* flush */
msleep(1);
/* Turn Analog ON */
b43_switch_analog(dev, 1);
macctl = b43_read32(dev, B43_MMIO_MACCTL);
macctl &= ~B43_MACCTL_GMODE;
if (flags & B43_TMSLOW_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->id.revision < 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_STATUS2_BITFIELD,
b43_read32(dev, B43_MMIO_STATUS2_BITFIELD)
| (1 << 4));
B43_WARN_ON(dev->noisecalc.channel_at_start != dev->phy.channel);
}
static void b43_calculate_link_quality(struct b43_wldev *dev)
{
/* Top half of Link Quality calculation. */
if (dev->noisecalc.calculation_running)
return;
dev->noisecalc.channel_at_start = dev->phy.channel;
dev->noisecalc.calculation_running = 1;
dev->noisecalc.nr_samples = 0;
b43_generate_noise_sample(dev);
}
static void handle_irq_noise(struct b43_wldev *dev)
{
struct b43_phy *phy = &dev->phy;
u16 tmp;
u8 noise[4];
u8 i, j;
s32 average;
/* Bottom half of Link Quality calculation. */
B43_WARN_ON(!dev->noisecalc.calculation_running);
if (dev->noisecalc.channel_at_start != phy->channel)
goto drop_calculation;
*((__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] = limit_value(noise[0], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
noise[1] = limit_value(noise[1], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
noise[2] = limit_value(noise[2], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
noise[3] = limit_value(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;
drop_calculation:
dev->noisecalc.calculation_running = 0;
return;
}
generate_new:
b43_generate_noise_sample(dev);
}
static void handle_irq_tbtt_indication(struct b43_wldev *dev)
{
if (b43_is_mode(dev->wl, IEEE80211_IF_TYPE_AP)) {
///TODO: PS TBTT
} else {
if (1 /*FIXME: the last PSpoll frame was sent successfully */ )
b43_power_saving_ctl_bits(dev, 0);
}
dev->reg124_set_0x4 = 0;
if (b43_is_mode(dev->wl, IEEE80211_IF_TYPE_IBSS))
dev->reg124_set_0x4 = 1;
}
static void handle_irq_atim_end(struct b43_wldev *dev)
{
if (!dev->reg124_set_0x4 /*FIXME rename this variable */ )
return;
b43_write32(dev, B43_MMIO_STATUS2_BITFIELD,
b43_read32(dev, B43_MMIO_STATUS2_BITFIELD)
| 0x4);
}
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));
}
static void b43_write_beacon_template(struct b43_wldev *dev,
u16 ram_offset,
u16 shm_size_offset, u8 rate)
{
int len;
const u8 *data;
B43_WARN_ON(!dev->cached_beacon);
len = min((size_t) dev->cached_beacon->len,
0x200 - sizeof(struct b43_plcp_hdr6));
data = (const u8 *)(dev->cached_beacon->data);
b43_write_template_common(dev, data,
len, ram_offset, shm_size_offset, rate);
}
static void b43_write_probe_resp_plcp(struct b43_wldev *dev,
u16 shm_offset, u16 size, u8 rate)
{
struct b43_plcp_hdr4 plcp;
u32 tmp;
__le16 dur;
plcp.data = 0;
b43_generate_plcp_hdr(&plcp, size + FCS_LEN, rate);
dur = ieee80211_generic_frame_duration(dev->wl->hw,
dev->wl->if_id, size,
B43_RATE_TO_BASE100KBPS(rate));
/* Write PLCP in two parts and timing for packet transfer */
tmp = le32_to_cpu(plcp.data);
b43_shm_write16(dev, B43_SHM_SHARED, shm_offset, tmp & 0xFFFF);
b43_shm_write16(dev, B43_SHM_SHARED, shm_offset + 2, tmp >> 16);
b43_shm_write16(dev, B43_SHM_SHARED, shm_offset + 6, le16_to_cpu(dur));
}
/* Instead of using custom probe response template, this function
* just patches custom beacon template by:
* 1) Changing packet type
* 2) Patching duration field
* 3) Stripping TIM
*/
static u8 *b43_generate_probe_resp(struct b43_wldev *dev,
u16 * dest_size, u8 rate)
{
const u8 *src_data;
u8 *dest_data;
u16 src_size, elem_size, src_pos, dest_pos;
__le16 dur;
struct ieee80211_hdr *hdr;
B43_WARN_ON(!dev->cached_beacon);
src_size = dev->cached_beacon->len;
src_data = (const u8 *)dev->cached_beacon->data;
if (unlikely(src_size < 0x24)) {
b43dbg(dev->wl, "b43_generate_probe_resp: " "invalid beacon\n");
return NULL;
}
dest_data = kmalloc(src_size, GFP_ATOMIC);
if (unlikely(!dest_data))
return NULL;
/* 0x24 is offset of first variable-len Information-Element
* in beacon frame.
*/
memcpy(dest_data, src_data, 0x24);
src_pos = dest_pos = 0x24;
for (; src_pos < src_size - 2; src_pos += elem_size) {
elem_size = src_data[src_pos + 1] + 2;
if (src_data[src_pos] != 0x05) { /* TIM */
memcpy(dest_data + dest_pos, src_data + src_pos,
elem_size);
dest_pos += elem_size;
}
}
*dest_size = dest_pos;
hdr = (struct ieee80211_hdr *)dest_data;
/* Set the frame control. */
hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
IEEE80211_STYPE_PROBE_RESP);
dur = ieee80211_generic_frame_duration(dev->wl->hw,
dev->wl->if_id, *dest_size,
B43_RATE_TO_BASE100KBPS(rate));
hdr->duration_id = dur;
return dest_data;
}
static void b43_write_probe_resp_template(struct b43_wldev *dev,
u16 ram_offset,
u16 shm_size_offset, u8 rate)
{
u8 *probe_resp_data;
u16 size;
B43_WARN_ON(!dev->cached_beacon);
size = dev->cached_beacon->len;
probe_resp_data = b43_generate_probe_resp(dev, &size, rate);
if (unlikely(!probe_resp_data))
return;
/* Looks like PLCP headers plus packet timings are stored for
* all possible basic rates
*/
b43_write_probe_resp_plcp(dev, 0x31A, size, B43_CCK_RATE_1MB);
b43_write_probe_resp_plcp(dev, 0x32C, size, B43_CCK_RATE_2MB);
b43_write_probe_resp_plcp(dev, 0x33E, size, B43_CCK_RATE_5MB);
b43_write_probe_resp_plcp(dev, 0x350, size, B43_CCK_RATE_11MB);
size = min((size_t) size, 0x200 - sizeof(struct b43_plcp_hdr6));
b43_write_template_common(dev, probe_resp_data,
size, ram_offset, shm_size_offset, rate);
kfree(probe_resp_data);
}
static int b43_refresh_cached_beacon(struct b43_wldev *dev,
struct sk_buff *beacon)
{
if (dev->cached_beacon)
kfree_skb(dev->cached_beacon);
dev->cached_beacon = beacon;
return 0;
}
static void b43_update_templates(struct b43_wldev *dev)
{
u32 status;
B43_WARN_ON(!dev->cached_beacon);
b43_write_beacon_template(dev, 0x68, 0x18, B43_CCK_RATE_1MB);
b43_write_beacon_template(dev, 0x468, 0x1A, B43_CCK_RATE_1MB);
b43_write_probe_resp_template(dev, 0x268, 0x4A, B43_CCK_RATE_11MB);
status = b43_read32(dev, B43_MMIO_STATUS2_BITFIELD);
status |= 0x03;
b43_write32(dev, B43_MMIO_STATUS2_BITFIELD, status);
}
static void b43_refresh_templates(struct b43_wldev *dev, struct sk_buff *beacon)
{
int err;
err = b43_refresh_cached_beacon(dev, beacon);
if (unlikely(err))
return;
b43_update_templates(dev);
}
static void b43_set_ssid(struct b43_wldev *dev, const u8 * ssid, u8 ssid_len)
{
u32 tmp;
u16 i, len;
len = min((u16) ssid_len, (u16) 0x100);
for (i = 0; i < len; i += sizeof(u32)) {
tmp = (u32) (ssid[i + 0]);
if (i + 1 < len)
tmp |= (u32) (ssid[i + 1]) << 8;
if (i + 2 < len)
tmp |= (u32) (ssid[i + 2]) << 16;
if (i + 3 < len)
tmp |= (u32) (ssid[i + 3]) << 24;
b43_shm_write32(dev, B43_SHM_SHARED, 0x380 + i, tmp);
}
b43_shm_write16(dev, B43_SHM_SHARED, 0x48, len);
}
static void b43_set_beacon_int(struct b43_wldev *dev, u16 beacon_int)
{
b43_time_lock(dev);
if (dev->dev->id.revision >= 3) {
b43_write32(dev, 0x188, (beacon_int << 16));
} else {
b43_write16(dev, 0x606, (beacon_int >> 6));
b43_write16(dev, 0x610, beacon_int);
}
b43_time_unlock(dev);
}
static void handle_irq_beacon(struct b43_wldev *dev)
{
u32 status;
if (!b43_is_mode(dev->wl, IEEE80211_IF_TYPE_AP))
return;
dev->irq_savedstate &= ~B43_IRQ_BEACON;
status = b43_read32(dev, B43_MMIO_STATUS2_BITFIELD);
if (!dev->cached_beacon || ((status & 0x1) && (status & 0x2))) {
/* ACK beacon IRQ. */
b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, B43_IRQ_BEACON);
dev->irq_savedstate |= B43_IRQ_BEACON;
if (dev->cached_beacon)
kfree_skb(dev->cached_beacon);
dev->cached_beacon = NULL;
return;
}
if (!(status & 0x1)) {
b43_write_beacon_template(dev, 0x68, 0x18, B43_CCK_RATE_1MB);
status |= 0x1;
b43_write32(dev, B43_MMIO_STATUS2_BITFIELD, status);
}
if (!(status & 0x2)) {
b43_write_beacon_template(dev, 0x468, 0x1A, B43_CCK_RATE_1MB);
status |= 0x2;
b43_write32(dev, B43_MMIO_STATUS2_BITFIELD, status);
}
}
static void handle_irq_ucode_debug(struct b43_wldev *dev)
{
//TODO
}
/* Interrupt handler bottom-half */
static void b43_interrupt_tasklet(struct b43_wldev *dev)
{
u32 reason;
u32 dma_reason[ARRAY_SIZE(dev->dma_reason)];
u32 merged_dma_reason = 0;
int i;
unsigned long flags;
spin_lock_irqsave(&dev->wl->irq_lock, flags);
B43_WARN_ON(b43_status(dev) != B43_STAT_STARTED);
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");
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]);
b43_controller_restart(dev, "DMA error");
mmiowb();
spin_unlock_irqrestore(&dev->wl->irq_lock, flags);
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(dev))
b43_pio_rx(dev->pio.queue0);
else
b43_dma_rx(dev->dma.rx_ring0);
}
B43_WARN_ON(dma_reason[1] & B43_DMAIRQ_RX_DONE);
B43_WARN_ON(dma_reason[2] & B43_DMAIRQ_RX_DONE);
if (dma_reason[3] & B43_DMAIRQ_RX_DONE) {
if (b43_using_pio(dev))
b43_pio_rx(dev->pio.queue3);
else
b43_dma_rx(dev->dma.rx_ring3);
}
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);
b43_interrupt_enable(dev, dev->irq_savedstate);
mmiowb();
spin_unlock_irqrestore(&dev->wl->irq_lock, flags);
}
static void pio_irq_workaround(struct b43_wldev *dev, u16 base, int queueidx)
{
u16 rxctl;
rxctl = b43_read16(dev, base + B43_PIO_RXCTL);
if (rxctl & B43_PIO_RXCTL_DATAAVAILABLE)
dev->dma_reason[queueidx] |= B43_DMAIRQ_RX_DONE;
else
dev->dma_reason[queueidx] &= ~B43_DMAIRQ_RX_DONE;
}
static void b43_interrupt_ack(struct b43_wldev *dev, u32 reason)
{
if (b43_using_pio(dev) &&
(dev->dev->id.revision < 3) &&
(!(reason & B43_IRQ_PIO_WORKAROUND))) {
/* Apply a PIO specific workaround to the dma_reasons */
pio_irq_workaround(dev, B43_MMIO_PIO1_BASE, 0);
pio_irq_workaround(dev, B43_MMIO_PIO2_BASE, 1);
pio_irq_workaround(dev, B43_MMIO_PIO3_BASE, 2);
pio_irq_workaround(dev, B43_MMIO_PIO4_BASE, 3);
}
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]);
b43_write32(dev, B43_MMIO_DMA5_REASON, dev->dma_reason[5]);
}
/* Interrupt handler top-half */
static irqreturn_t b43_interrupt_handler(int irq, void *dev_id)
{
irqreturn_t ret = IRQ_NONE;
struct b43_wldev *dev = dev_id;
u32 reason;
if (!dev)
return IRQ_NONE;
spin_lock(&dev->wl->irq_lock);
if (b43_status(dev) < B43_STAT_STARTED)
goto out;
reason = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
if (reason == 0xffffffff) /* shared IRQ */
goto out;
ret = IRQ_HANDLED;
reason &= b43_read32(dev, B43_MMIO_GEN_IRQ_MASK);
if (!reason)
goto out;
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;
dev->dma_reason[5] = b43_read32(dev, B43_MMIO_DMA5_REASON)
& 0x0000DC00;
b43_interrupt_ack(dev, reason);
/* disable all IRQs. They are enabled again in the bottom half. */
dev->irq_savedstate = b43_interrupt_disable(dev, B43_IRQ_ALL);
/* save the reason code and call our bottom half. */
dev->irq_reason = reason;
tasklet_schedule(&dev->isr_tasklet);
out:
mmiowb();
spin_unlock(&dev->wl->irq_lock);
return ret;
}
static void b43_release_firmware(struct b43_wldev *dev)
{
release_firmware(dev->fw.ucode);
dev->fw.ucode = NULL;
release_firmware(dev->fw.pcm);
dev->fw.pcm = NULL;
release_firmware(dev->fw.initvals);
dev->fw.initvals = NULL;
release_firmware(dev->fw.initvals_band);
dev->fw.initvals_band = NULL;
}
static void b43_print_fw_helptext(struct b43_wl *wl)
{
b43err(wl, "You must go to "
"http://linuxwireless.org/en/users/Drivers/bcm43xx#devicefirmware "
"and download the correct firmware (version 4).\n");
}
static int do_request_fw(struct b43_wldev *dev,
const char *name,
const struct firmware **fw)
{
char path[sizeof(modparam_fwpostfix) + 32];
struct b43_fw_header *hdr;
u32 size;
int err;
if (!name)
return 0;
snprintf(path, ARRAY_SIZE(path),
"b43%s/%s.fw",
modparam_fwpostfix, name);
err = request_firmware(fw, path, dev->dev->dev);
if (err) {
b43err(dev->wl, "Firmware file \"%s\" not found "
"or load failed.\n", path);
return err;
}
if ((*fw)->size < sizeof(struct b43_fw_header))
goto err_format;
hdr = (struct b43_fw_header *)((*fw)->data);
switch (hdr->type) {
case B43_FW_TYPE_UCODE:
case B43_FW_TYPE_PCM:
size = be32_to_cpu(hdr->size);
if (size != (*fw)->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;
}
return err;
err_format:
b43err(dev->wl, "Firmware file \"%s\" format error.\n", path);
return -EPROTO;
}
static int b43_request_firmware(struct b43_wldev *dev)
{
struct b43_firmware *fw = &dev->fw;
const u8 rev = dev->dev->id.revision;
const char *filename;
u32 tmshigh;
int err;
tmshigh = ssb_read32(dev->dev, SSB_TMSHIGH);
if (!fw->ucode) {
if ((rev >= 5) && (rev <= 10))
filename = "ucode5";
else if ((rev >= 11) && (rev <= 12))
filename = "ucode11";
else if (rev >= 13)
filename = "ucode13";
else
goto err_no_ucode;
err = do_request_fw(dev, filename, &fw->ucode);
if (err)
goto err_load;
}
if (!fw->pcm) {
if ((rev >= 5) && (rev <= 10))
filename = "pcm5";
else if (rev >= 11)
filename = NULL;
else
goto err_no_pcm;
err = do_request_fw(dev, filename, &fw->pcm);
if (err)
goto err_load;
}
if (!fw->initvals) {
switch (dev->phy.type) {
case B43_PHYTYPE_A:
if ((rev >= 5) && (rev <= 10)) {
if (tmshigh & B43_TMSHIGH_GPHY)
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 = "lp0initvals13";
else
goto err_no_initvals;
break;
default:
goto err_no_initvals;
}
err = do_request_fw(dev, filename, &fw->initvals);
if (err)
goto err_load;
}
if (!fw->initvals_band) {
switch (dev->phy.type) {
case B43_PHYTYPE_A:
if ((rev >= 5) && (rev <= 10)) {
if (tmshigh & B43_TMSHIGH_GPHY)
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;
default:
goto err_no_initvals;
}
err = do_request_fw(dev, filename, &fw->initvals_band);
if (err)
goto err_load;
}
return 0;
err_load:
b43_print_fw_helptext(dev->wl);
goto error;
err_no_ucode:
err = -ENODEV;
b43err(dev->wl, "No microcode available for core rev %u\n", rev);
goto error;
err_no_pcm:
err = -ENODEV;
b43err(dev->wl, "No PCM available for core rev %u\n", rev);
goto error;
err_no_initvals:
err = -ENODEV;
b43err(dev->wl, "No Initial Values firmware file for PHY %u, "
"core rev %u\n", dev->phy.type, rev);
goto error;
error:
b43_release_firmware(dev);
return err;
}
static int b43_upload_microcode(struct b43_wldev *dev)
{
const size_t hdr_len = sizeof(struct b43_fw_header);
const __be32 *data;
unsigned int i, len;
u16 fwrev, fwpatch, fwdate, fwtime;
u32 tmp;
int err = 0;
/* Upload Microcode. */
data = (__be32 *) (dev->fw.ucode->data + hdr_len);
len = (dev->fw.ucode->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) {
/* Upload PCM data. */
data = (__be32 *) (dev->fw.pcm->data + hdr_len);
len = (dev->fw.pcm->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);
b43_write32(dev, B43_MMIO_MACCTL,
B43_MACCTL_PSM_RUN |
B43_MACCTL_IHR_ENABLED | B43_MACCTL_INFRA);
/* 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 >= 50) {
b43err(dev->wl, "Microcode not responding\n");
b43_print_fw_helptext(dev->wl);
err = -ENODEV;
goto out;
}
udelay(10);
}
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);
b43_write32(dev, B43_MMIO_MACCTL, 0);
err = -EOPNOTSUPP;
goto out;
}
b43dbg(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);
dev->fw.rev = fwrev;
dev->fw.patch = fwpatch;
out:
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 = be32_to_cpu(get_unaligned(&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);
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);
ivals = (const struct b43_iv *)(fw->initvals->data + hdr_len);
count = be32_to_cpu(hdr->size);
err = b43_write_initvals(dev, ivals, count,
fw->initvals->size - hdr_len);
if (err)
goto out;
if (fw->initvals_band) {
hdr = (const struct b43_fw_header *)(fw->initvals_band->data);
ivals = (const struct b43_iv *)(fw->initvals_band->data + hdr_len);
count = be32_to_cpu(hdr->size);
err = b43_write_initvals(dev, ivals, count,
fw->initvals_band->size - hdr_len);
if (err)
goto out;
}
out:
return err;
}
/* Initialize the GPIOs
* http://bcm-specs.sipsolutions.net/GPIO
*/
static int b43_gpio_init(struct b43_wldev *dev)
{
struct ssb_bus *bus = dev->dev->bus;
struct ssb_device *gpiodev, *pcidev = NULL;
u32 mask, set;
b43_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL)
& ~B43_MACCTL_GPOUTSMSK);
b43_write16(dev, B43_MMIO_GPIO_MASK, b43_read16(dev, B43_MMIO_GPIO_MASK)
| 0x000F);
mask = 0x0000001F;
set = 0x0000000F;
if (dev->dev->bus->chip_id == 0x4301) {
mask |= 0x0060;
set |= 0x0060;
}
if (0 /* FIXME: conditional unknown */ ) {
b43_write16(dev, B43_MMIO_GPIO_MASK,
b43_read16(dev, B43_MMIO_GPIO_MASK)
| 0x0100);
mask |= 0x0180;
set |= 0x0180;
}
if (dev->dev->bus->sprom.r1.boardflags_lo & B43_BFL_PACTRL) {
b43_write16(dev, B43_MMIO_GPIO_MASK,
b43_read16(dev, B43_MMIO_GPIO_MASK)
| 0x0200);
mask |= 0x0200;
set |= 0x0200;
}
if (dev->dev->id.revision >= 2)
mask |= 0x0010; /* FIXME: This is redundant. */
#ifdef CONFIG_SSB_DRIVER_PCICORE
pcidev = bus->pcicore.dev;
#endif
gpiodev = bus->chipco.dev ? : pcidev;
if (!gpiodev)
return 0;
ssb_write32(gpiodev, B43_GPIO_CONTROL,
(ssb_read32(gpiodev, B43_GPIO_CONTROL)
& mask) | set);
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_bus *bus = dev->dev->bus;
struct ssb_device *gpiodev, *pcidev = NULL;
#ifdef CONFIG_SSB_DRIVER_PCICORE
pcidev = bus->pcicore.dev;
#endif
gpiodev = bus->chipco.dev ? : pcidev;
if (!gpiodev)
return;
ssb_write32(gpiodev, B43_GPIO_CONTROL, 0);
}
/* http://bcm-specs.sipsolutions.net/EnableMac */
void b43_mac_enable(struct b43_wldev *dev)
{
dev->mac_suspended--;
B43_WARN_ON(dev->mac_suspended < 0);
B43_WARN_ON(irqs_disabled());
if (dev->mac_suspended == 0) {
b43_write32(dev, B43_MMIO_MACCTL,
b43_read32(dev, B43_MMIO_MACCTL)
| 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);
/* Re-enable IRQs. */
spin_lock_irq(&dev->wl->irq_lock);
b43_interrupt_enable(dev, dev->irq_savedstate);
spin_unlock_irq(&dev->wl->irq_lock);
}
}
/* http://bcm-specs.sipsolutions.net/SuspendMAC */
void b43_mac_suspend(struct b43_wldev *dev)
{
int i;
u32 tmp;
might_sleep();
B43_WARN_ON(irqs_disabled());
B43_WARN_ON(dev->mac_suspended < 0);
if (dev->mac_suspended == 0) {
/* Mask IRQs before suspending MAC. Otherwise
* the MAC stays busy and won't suspend. */
spin_lock_irq(&dev->wl->irq_lock);
tmp = b43_interrupt_disable(dev, B43_IRQ_ALL);
spin_unlock_irq(&dev->wl->irq_lock);
b43_synchronize_irq(dev);
dev->irq_savedstate = tmp;
b43_power_saving_ctl_bits(dev, B43_PS_AWAKE);
b43_write32(dev, B43_MMIO_MACCTL,
b43_read32(dev, B43_MMIO_MACCTL)
& ~B43_MACCTL_ENABLED);
/* force pci to flush the write */
b43_read32(dev, B43_MMIO_MACCTL);
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++;
}
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, IEEE80211_IF_TYPE_AP))
ctl |= B43_MACCTL_AP;
else if (b43_is_mode(wl, IEEE80211_IF_TYPE_IBSS))
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->id.revision <= 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->bus->chip_id == 0x4306 &&
dev->dev->bus->chip_rev == 3)
cfp_pretbtt = 100;
else
cfp_pretbtt = 50;
}
b43_write16(dev, 0x612, cfp_pretbtt);
}
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:
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 TX-Antenna for management frames sent by firmware. */
static void b43_mgmtframe_txantenna(struct b43_wldev *dev, int antenna)
{
u16 ant = 0;
u16 tmp;
switch (antenna) {
case B43_ANTENNA0:
ant |= B43_TX4_PHY_ANT0;
break;
case B43_ANTENNA1:
ant |= B43_TX4_PHY_ANT1;
break;
case B43_ANTENNA_AUTO:
ant |= B43_TX4_PHY_ANTLAST;
break;
default:
B43_WARN_ON(1);
}
/* FIXME We also need to set the other flags of the PHY control field somewhere. */
/* For Beacons */
tmp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_BEACPHYCTL);
tmp = (tmp & ~B43_TX4_PHY_ANT) | ant;
b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_BEACPHYCTL, tmp);
/* For ACK/CTS */
tmp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_ACKCTSPHYCTL);
tmp = (tmp & ~B43_TX4_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_TX4_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_radio_turn_off(dev, 1);
b43_leds_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, tmp;
u32 value32;
u16 value16;
b43_write32(dev, B43_MMIO_MACCTL,
B43_MACCTL_PSM_JMP0 | B43_MACCTL_IHR_ENABLED);
err = b43_request_firmware(dev);
if (err)
goto out;
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 */
b43_leds_init(dev);
err = b43_upload_initvals(dev);
if (err)
goto err_leds_exit;
b43_radio_turn_on(dev);
b43_write16(dev, 0x03E6, 0x0000);
err = b43_phy_init(dev);
if (err)
goto err_radio_off;
/* Select initial Interference Mitigation. */
tmp = phy->interfmode;
phy->interfmode = B43_INTERFMODE_NONE;
b43_radio_set_interference_mitigation(dev, tmp);
b43_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->id.revision < 5)
b43_write32(dev, 0x010C, 0x01000000);
b43_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL)
& ~B43_MACCTL_INFRA);
b43_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL)
| B43_MACCTL_INFRA);
if (b43_using_pio(dev)) {
b43_write32(dev, 0x0210, 0x00000100);
b43_write32(dev, 0x0230, 0x00000100);
b43_write32(dev, 0x0250, 0x00000100);
b43_write32(dev, 0x0270, 0x00000100);
b43_shm_write16(dev, B43_SHM_SHARED, 0x0034, 0x0000);
}
/* 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->id.revision < 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);
value32 = ssb_read32(dev->dev, SSB_TMSLOW);
value32 |= 0x00100000;
ssb_write32(dev->dev, SSB_TMSLOW, value32);
b43_write16(dev, B43_MMIO_POWERUP_DELAY,
dev->dev->bus->chipco.fast_pwrup_delay);
err = 0;
b43dbg(dev->wl, "Chip initialized\n");
out:
return err;
err_radio_off:
b43_radio_turn_off(dev, 1);
err_leds_exit:
b43_leds_exit(dev);
b43_gpio_cleanup(dev);
return err;
}
static void b43_periodic_every120sec(struct b43_wldev *dev)
{
struct b43_phy *phy = &dev->phy;
if (phy->type != B43_PHYTYPE_G || phy->rev < 2)
return;
b43_mac_suspend(dev);
b43_lo_g_measure(dev);
b43_mac_enable(dev);
if (b43_has_hardware_pctl(phy))
b43_lo_g_ctl_mark_all_unused(dev);
}
static void b43_periodic_every60sec(struct b43_wldev *dev)
{
struct b43_phy *phy = &dev->phy;
if (!b43_has_hardware_pctl(phy))
b43_lo_g_ctl_mark_all_unused(dev);
if (dev->dev->bus->sprom.r1.boardflags_lo & B43_BFL_RSSI) {
b43_mac_suspend(dev);
b43_calc_nrssi_slope(dev);
if ((phy->radio_ver == 0x2050) && (phy->radio_rev == 8)) {
u8 old_chan = phy->channel;
/* VCO Calibration */
if (old_chan >= 8)
b43_radio_selectchannel(dev, 1, 0);
else
b43_radio_selectchannel(dev, 13, 0);
b43_radio_selectchannel(dev, old_chan, 0);
}
b43_mac_enable(dev);
}
}
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;
if (phy->type == B43_PHYTYPE_G) {
//TODO: update_aci_moving_average
if (phy->aci_enable && phy->aci_wlan_automatic) {
b43_mac_suspend(dev);
if (!phy->aci_enable && 1 /*TODO: not scanning? */ ) {
if (0 /*TODO: bunch of conditions */ ) {
b43_radio_set_interference_mitigation
(dev, B43_INTERFMODE_MANUALWLAN);
}
} else if (1 /*TODO*/) {
/*
if ((aci_average > 1000) && !(b43_radio_aci_scan(dev))) {
b43_radio_set_interference_mitigation(dev,
B43_INTERFMODE_NONE);
}
*/
}
b43_mac_enable(dev);
} else if (phy->interfmode == B43_INTERFMODE_NONWLAN &&
phy->rev == 1) {
//TODO: implement rev1 workaround
}
}
b43_phy_xmitpower(dev); //FIXME: unless scanning?
//TODO for APHY (temperature?)
}
static void do_periodic_work(struct b43_wldev *dev)
{
unsigned int state;
state = dev->periodic_state;
if (state % 8 == 0)
b43_periodic_every120sec(dev);
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 aquired 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);
queue_delayed_work(wl->hw->workqueue, &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);
queue_delayed_work(dev->wl->hw->workqueue, work, 0);
}
/* Validate access to the chip (SHM) */
static int b43_validate_chipaccess(struct b43_wldev *dev)
{
u32 value;
u32 shm_backup;
shm_backup = b43_shm_read32(dev, B43_SHM_SHARED, 0);
b43_shm_write32(dev, B43_SHM_SHARED, 0, 0xAA5555AA);
if (b43_shm_read32(dev, B43_SHM_SHARED, 0) != 0xAA5555AA)
goto error;
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, shm_backup);
value = b43_read32(dev, B43_MMIO_MACCTL);
if ((value | B43_MACCTL_GMODE) !=
(B43_MACCTL_GMODE | B43_MACCTL_IHR_ENABLED))
goto error;
value = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
if (value)
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->max_nr_keys = (dev->dev->id.revision >= 5) ? 58 : 20;
B43_WARN_ON(dev->max_nr_keys > ARRAY_SIZE(dev->key));
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;
if (dev->dev->id.revision >= 5) {
/* Number of RCMTA address slots */
b43_write16(dev, B43_MMIO_RCMTA_COUNT, dev->max_nr_keys - 8);
}
b43_clear_keys(dev);
}
static int b43_rng_read(struct hwrng *rng, u32 * data)
{
struct b43_wl *wl = (struct b43_wl *)rng->priv;
unsigned long flags;
/* Don't take wl->mutex here, as it could deadlock with
* hwrng internal locking. It's not needed to take
* wl->mutex here, anyway. */
spin_lock_irqsave(&wl->irq_lock, flags);
*data = b43_read16(wl->current_dev, B43_MMIO_RNG);
spin_unlock_irqrestore(&wl->irq_lock, flags);
return (sizeof(u16));
}
static void b43_rng_exit(struct b43_wl *wl)
{
if (wl->rng_initialized)
hwrng_unregister(&wl->rng);
}
static int b43_rng_init(struct b43_wl *wl)
{
int err;
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 = 1;
err = hwrng_register(&wl->rng);
if (err) {
wl->rng_initialized = 0;
b43err(wl, "Failed to register the random "
"number generator (%d)\n", err);
}
return err;
}
static int b43_tx(struct ieee80211_hw *hw,
struct sk_buff *skb, struct ieee80211_tx_control *ctl)
{
struct b43_wl *wl = hw_to_b43_wl(hw);
struct b43_wldev *dev = wl->current_dev;
int err = -ENODEV;
unsigned long flags;
if (unlikely(!dev))
goto out;
if (unlikely(b43_status(dev) < B43_STAT_STARTED))
goto out;
/* DMA-TX is done without a global lock. */
if (b43_using_pio(dev)) {
spin_lock_irqsave(&wl->irq_lock, flags);
err = b43_pio_tx(dev, skb, ctl);
spin_unlock_irqrestore(&wl->irq_lock, flags);
} else
err = b43_dma_tx(dev, skb, ctl);
out:
if (unlikely(err))
return NETDEV_TX_BUSY;
return NETDEV_TX_OK;
}
static int b43_conf_tx(struct ieee80211_hw *hw,
int queue,
const struct ieee80211_tx_queue_params *params)
{
return 0;
}
static int b43_get_tx_stats(struct ieee80211_hw *hw,
struct ieee80211_tx_queue_stats *stats)
{
struct b43_wl *wl = hw_to_b43_wl(hw);
struct b43_wldev *dev = wl->current_dev;
unsigned long flags;
int err = -ENODEV;
if (!dev)
goto out;
spin_lock_irqsave(&wl->irq_lock, flags);
if (likely(b43_status(dev) >= B43_STAT_STARTED)) {
if (b43_using_pio(dev))
b43_pio_get_tx_stats(dev, stats);
else
b43_dma_get_tx_stats(dev, stats);
err = 0;
}
spin_unlock_irqrestore(&wl->irq_lock, flags);
out:
return err;
}
static int b43_get_stats(struct ieee80211_hw *hw,
struct ieee80211_low_level_stats *stats)
{
struct b43_wl *wl = hw_to_b43_wl(hw);
unsigned long flags;
spin_lock_irqsave(&wl->irq_lock, flags);
memcpy(stats, &wl->ieee_stats, sizeof(*stats));
spin_unlock_irqrestore(&wl->irq_lock, flags);
return 0;
}
static const char *phymode_to_string(unsigned int phymode)
{
switch (phymode) {
case B43_PHYMODE_A:
return "A";
case B43_PHYMODE_B:
return "B";
case B43_PHYMODE_G:
return "G";
default:
B43_WARN_ON(1);
}
return "";
}
static int find_wldev_for_phymode(struct b43_wl *wl,
unsigned int phymode,
struct b43_wldev **dev, bool * gmode)
{
struct b43_wldev *d;
list_for_each_entry(d, &wl->devlist, list) {
if (d->phy.possible_phymodes & phymode) {
/* Ok, this device supports the PHY-mode.
* Now figure out how the gmode bit has to be
* set to support it. */
if (phymode == B43_PHYMODE_A)
*gmode = 0;
else
*gmode = 1;
*dev = d;
return 0;
}
}
return -ESRCH;
}
static void b43_put_phy_into_reset(struct b43_wldev *dev)
{
struct ssb_device *sdev = dev->dev;
u32 tmslow;
tmslow = ssb_read32(sdev, SSB_TMSLOW);
tmslow &= ~B43_TMSLOW_GMODE;
tmslow |= B43_TMSLOW_PHYRESET;
tmslow |= SSB_TMSLOW_FGC;
ssb_write32(sdev, SSB_TMSLOW, tmslow);
msleep(1);
tmslow = ssb_read32(sdev, SSB_TMSLOW);
tmslow &= ~SSB_TMSLOW_FGC;
tmslow |= B43_TMSLOW_PHYRESET;
ssb_write32(sdev, SSB_TMSLOW, tmslow);
msleep(1);
}
/* Expects wl->mutex locked */
static int b43_switch_phymode(struct b43_wl *wl, unsigned int new_mode)
{
struct b43_wldev *up_dev;
struct b43_wldev *down_dev;
int err;
bool gmode = 0;
int prev_status;
err = find_wldev_for_phymode(wl, new_mode, &up_dev, &gmode);
if (err) {
b43err(wl, "Could not find a device for %s-PHY mode\n",
phymode_to_string(new_mode));
return err;
}
if ((up_dev == wl->current_dev) &&
(!!wl->current_dev->phy.gmode == !!gmode)) {
/* This device is already running. */
return 0;
}
b43dbg(wl, "Reconfiguring PHYmode to %s-PHY\n",
phymode_to_string(new_mode));
down_dev = wl->current_dev;
prev_status = b43_status(down_dev);
/* Shutdown the currently running core. */
if (prev_status >= B43_STAT_STARTED)
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 "
"newly selected %s-PHY mode\n",
phymode_to_string(new_mode));
goto init_failure;
}
}
if (prev_status >= B43_STAT_STARTED) {
err = b43_wireless_core_start(up_dev);
if (err) {
b43err(wl, "Fatal: Coult not start device for "
"newly selected %s-PHY mode\n",
phymode_to_string(new_mode));
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;
}
static int b43_antenna_from_ieee80211(u8 antenna)
{
switch (antenna) {
case 0: /* default/diversity */
return B43_ANTENNA_DEFAULT;
case 1: /* Antenna 0 */
return B43_ANTENNA0;
case 2: /* Antenna 1 */
return B43_ANTENNA1;
default:
return B43_ANTENNA_DEFAULT;
}
}
static int b43_dev_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
{
struct b43_wl *wl = hw_to_b43_wl(hw);
struct b43_wldev *dev;
struct b43_phy *phy;
unsigned long flags;
unsigned int new_phymode = 0xFFFF;
int antenna_tx;
int antenna_rx;
int err = 0;
u32 savedirqs;
antenna_tx = b43_antenna_from_ieee80211(conf->antenna_sel_tx);
antenna_rx = b43_antenna_from_ieee80211(conf->antenna_sel_rx);
mutex_lock(&wl->mutex);
/* Switch the PHY mode (if necessary). */
switch (conf->phymode) {
case MODE_IEEE80211A:
new_phymode = B43_PHYMODE_A;
break;
case MODE_IEEE80211B:
new_phymode = B43_PHYMODE_B;
break;
case MODE_IEEE80211G:
new_phymode = B43_PHYMODE_G;
break;
default:
B43_WARN_ON(1);
}
err = b43_switch_phymode(wl, new_phymode);
if (err)
goto out_unlock_mutex;
dev = wl->current_dev;
phy = &dev->phy;
/* Disable IRQs while reconfiguring the device.
* This makes it possible to drop the spinlock throughout
* the reconfiguration process. */
spin_lock_irqsave(&wl->irq_lock, flags);
if (b43_status(dev) < B43_STAT_STARTED) {
spin_unlock_irqrestore(&wl->irq_lock, flags);
goto out_unlock_mutex;
}
savedirqs = b43_interrupt_disable(dev, B43_IRQ_ALL);
spin_unlock_irqrestore(&wl->irq_lock, flags);
b43_synchronize_irq(dev);
/* Switch to the requested channel.
* The firmware takes care of races with the TX handler. */
if (conf->channel_val != phy->channel)
b43_radio_selectchannel(dev, conf->channel_val, 0);
/* Enable/Disable ShortSlot timing. */
if ((!!(conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME)) !=
dev->short_slot) {
B43_WARN_ON(phy->type != B43_PHYTYPE_G);
if (conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME)
b43_short_slot_timing_enable(dev);
else
b43_short_slot_timing_disable(dev);
}
/* Adjust the desired TX power level. */
if (conf->power_level != 0) {
if (conf->power_level != phy->power_level) {
phy->power_level = conf->power_level;
b43_phy_xmitpower(dev);
}
}
/* Antennas for RX and management frame TX. */
b43_mgmtframe_txantenna(dev, antenna_tx);
b43_set_rx_antenna(dev, antenna_rx);
/* Update templates for AP mode. */
if (b43_is_mode(wl, IEEE80211_IF_TYPE_AP))
b43_set_beacon_int(dev, conf->beacon_int);
if (!!conf->radio_enabled != phy->radio_on) {
if (conf->radio_enabled) {
b43_radio_turn_on(dev);
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_radio_turn_off(dev, 0);
b43info(dev->wl, "Radio turned off by software\n");
}
}
spin_lock_irqsave(&wl->irq_lock, flags);
b43_interrupt_enable(dev, savedirqs);
mmiowb();
spin_unlock_irqrestore(&wl->irq_lock, flags);
out_unlock_mutex:
mutex_unlock(&wl->mutex);
return err;
}
static int b43_dev_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
const u8 *local_addr, const u8 *addr,
struct ieee80211_key_conf *key)
{
struct b43_wl *wl = hw_to_b43_wl(hw);
struct b43_wldev *dev = wl->current_dev;
unsigned long flags;
u8 algorithm;
u8 index;
int err = -EINVAL;
DECLARE_MAC_BUF(mac);
if (modparam_nohwcrypt)
return -ENOSPC; /* User disabled HW-crypto */
if (!dev)
return -ENODEV;
switch (key->alg) {
case ALG_WEP:
if (key->keylen == 5)
algorithm = B43_SEC_ALGO_WEP40;
else
algorithm = B43_SEC_ALGO_WEP104;
break;
case ALG_TKIP:
algorithm = B43_SEC_ALGO_TKIP;
break;
case ALG_CCMP:
algorithm = B43_SEC_ALGO_AES;
break;
default:
B43_WARN_ON(1);
goto out;
}
index = (u8) (key->keyidx);
if (index > 3)
goto out;
mutex_lock(&wl->mutex);
spin_lock_irqsave(&wl->irq_lock, flags);
if (b43_status(dev) < B43_STAT_INITIALIZED) {
err = -ENODEV;
goto out_unlock;
}
switch (cmd) {
case SET_KEY:
if (algorithm == B43_SEC_ALGO_TKIP) {
/* FIXME: No TKIP hardware encryption for now. */
err = -EOPNOTSUPP;
goto out_unlock;
}
if (is_broadcast_ether_addr(addr)) {
/* addr is FF:FF:FF:FF:FF:FF for default keys */
err = b43_key_write(dev, index, algorithm,
key->key, key->keylen, NULL, key);
} else {
/*
* either pairwise key or address is 00:00:00:00:00:00
* for transmit-only keys
*/
err = b43_key_write(dev, -1, algorithm,
key->key, key->keylen, addr, 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;
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:
spin_unlock_irqrestore(&wl->irq_lock, flags);
mutex_unlock(&wl->mutex);
out:
if (!err) {
b43dbg(wl, "%s hardware based encryption for keyidx: %d, "
"mac: %s\n",
cmd == SET_KEY ? "Using" : "Disabling", key->keyidx,
print_mac(mac, addr));
}
return err;
}
static void b43_configure_filter(struct ieee80211_hw *hw,
unsigned int changed, unsigned int *fflags,
int mc_count, struct dev_addr_list *mc_list)
{
struct b43_wl *wl = hw_to_b43_wl(hw);
struct b43_wldev *dev = wl->current_dev;
unsigned long flags;
if (!dev) {
*fflags = 0;
return;
}
spin_lock_irqsave(&wl->irq_lock, flags);
*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);
spin_unlock_irqrestore(&wl->irq_lock, flags);
}
static int b43_config_interface(struct ieee80211_hw *hw,
int if_id, struct ieee80211_if_conf *conf)
{
struct b43_wl *wl = hw_to_b43_wl(hw);
struct b43_wldev *dev = wl->current_dev;
unsigned long flags;
if (!dev)
return -ENODEV;
mutex_lock(&wl->mutex);
spin_lock_irqsave(&wl->irq_lock, flags);
B43_WARN_ON(wl->if_id != if_id);
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 (b43_is_mode(wl, IEEE80211_IF_TYPE_AP)) {
B43_WARN_ON(conf->type != IEEE80211_IF_TYPE_AP);
b43_set_ssid(dev, conf->ssid, conf->ssid_len);
if (conf->beacon)
b43_refresh_templates(dev, conf->beacon);
}
b43_write_mac_bssid_templates(dev);
}
spin_unlock_irqrestore(&wl->irq_lock, flags);
mutex_unlock(&wl->mutex);
return 0;
}
/* Locking: wl->mutex */
static void b43_wireless_core_stop(struct b43_wldev *dev)
{
struct b43_wl *wl = dev->wl;
unsigned long flags;
if (b43_status(dev) < B43_STAT_STARTED)
return;
/* Disable and sync interrupts. We must do this before than
* setting the status to INITIALIZED, as the interrupt handler
* won't care about IRQs then. */
spin_lock_irqsave(&wl->irq_lock, flags);
dev->irq_savedstate = b43_interrupt_disable(dev, B43_IRQ_ALL);
b43_read32(dev, B43_MMIO_GEN_IRQ_MASK); /* flush */
spin_unlock_irqrestore(&wl->irq_lock, flags);
b43_synchronize_irq(dev);
b43_set_status(dev, B43_STAT_INITIALIZED);
mutex_unlock(&wl->mutex);
/* Must unlock as it would otherwise deadlock. No races here.
* Cancel the possibly running self-rearming periodic work. */
cancel_delayed_work_sync(&dev->periodic_work);
mutex_lock(&wl->mutex);
ieee80211_stop_queues(wl->hw); //FIXME this could cause a deadlock, as mac80211 seems buggy.
b43_mac_suspend(dev);
free_irq(dev->dev->irq, dev);
b43dbg(wl, "Wireless interface stopped\n");
}
/* 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);
err = request_irq(dev->dev->irq, b43_interrupt_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. */
b43_set_status(dev, B43_STAT_STARTED);
/* Start data flow (TX/RX). */
b43_mac_enable(dev);
b43_interrupt_enable(dev, dev->irq_savedstate);
ieee80211_start_queues(dev->wl->hw);
/* Start maintainance work */
b43_periodic_tasks_setup(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 > 8)
unsupported = 1;
break;
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->bus->chip_id == 0x4317) {
if (dev->dev->bus->chip_rev == 0)
tmp = 0x3205017F;
else if (dev->dev->bus->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_HIGH);
tmp <<= 16;
b43_write16(dev, B43_MMIO_RADIO_CONTROL, B43_RADIOCTL_ID);
tmp |= b43_read16(dev, B43_MMIO_RADIO_DATA_LOW);
}
radio_manuf = (tmp & 0x00000FFF);
radio_ver = (tmp & 0x0FFFF000) >> 12;
radio_rev = (tmp & 0xF0000000) >> 28;
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;
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)
{
struct b43_txpower_lo_control *lo;
int i;
memset(phy->minlowsig, 0xFF, sizeof(phy->minlowsig));
memset(phy->minlowsigpos, 0, sizeof(phy->minlowsigpos));
/* Flags */
phy->locked = 0;
phy->aci_enable = 0;
phy->aci_wlan_automatic = 0;
phy->aci_hw_rssi = 0;
phy->radio_off_context.valid = 0;
lo = phy->lo_control;
if (lo) {
memset(lo, 0, sizeof(*(phy->lo_control)));
lo->rebuild = 1;
lo->tx_bias = 0xFF;
}
phy->max_lb_gain = 0;
phy->trsw_rx_gain = 0;
phy->txpwr_offset = 0;
/* NRSSI */
phy->nrssislope = 0;
for (i = 0; i < ARRAY_SIZE(phy->nrssi); i++)
phy->nrssi[i] = -1000;
for (i = 0; i < ARRAY_SIZE(phy->nrssi_lt); i++)
phy->nrssi_lt[i] = i;
phy->lofcal = 0xFFFF;
phy->initval = 0xFFFF;
spin_lock_init(&phy->lock);
phy->interfmode = B43_INTERFMODE_NONE;
phy->channel = 0xFF;
phy->hardware_power_control = !!modparam_hwpctl;
}
static void setup_struct_wldev_for_init(struct b43_wldev *dev)
{
/* Flags */
dev->reg124_set_0x4 = 0;
/* 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 = 1;
/* 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_savedstate = B43_IRQ_MASKTEMPLATE;
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;
u32 hf;
if (!(sprom->r1.boardflags_lo & B43_BFL_BTCOEXIST))
return;
if (dev->phy.type != B43_PHYTYPE_B && !dev->phy.gmode)
return;
hf = b43_hf_read(dev);
if (sprom->r1.boardflags_lo & B43_BFL_BTCMOD)
hf |= B43_HF_BTCOEXALT;
else
hf |= B43_HF_BTCOEX;
b43_hf_write(dev, hf);
//TODO
}
static void b43_bluetooth_coext_disable(struct b43_wldev *dev)
{ //TODO
}
static void b43_imcfglo_timeouts_workaround(struct b43_wldev *dev)
{
#ifdef CONFIG_SSB_DRIVER_PCICORE
struct ssb_bus *bus = dev->dev->bus;
u32 tmp;
if (bus->pcicore.dev &&
bus->pcicore.dev->id.coreid == SSB_DEV_PCI &&
bus->pcicore.dev->id.revision <= 5) {
/* IMCFGLO timeouts workaround. */
tmp = ssb_read32(dev->dev, SSB_IMCFGLO);
tmp &= ~SSB_IMCFGLO_REQTO;
tmp &= ~SSB_IMCFGLO_SERTO;
switch (bus->bustype) {
case SSB_BUSTYPE_PCI:
case SSB_BUSTYPE_PCMCIA:
tmp |= 0x32;
break;
case SSB_BUSTYPE_SSB:
tmp |= 0x53;
break;
}
ssb_write32(dev->dev, SSB_IMCFGLO, tmp);
}
#endif /* CONFIG_SSB_DRIVER_PCICORE */
}
/* Shutdown a wireless core */
/* Locking: wl->mutex */
static void b43_wireless_core_exit(struct b43_wldev *dev)
{
struct b43_phy *phy = &dev->phy;
B43_WARN_ON(b43_status(dev) > B43_STAT_INITIALIZED);
if (b43_status(dev) != B43_STAT_INITIALIZED)
return;
b43_set_status(dev, B43_STAT_UNINIT);
mutex_unlock(&dev->wl->mutex);
b43_rfkill_exit(dev);
mutex_lock(&dev->wl->mutex);
b43_rng_exit(dev->wl);
b43_pio_free(dev);
b43_dma_free(dev);
b43_chip_exit(dev);
b43_radio_turn_off(dev, 1);
b43_switch_analog(dev, 0);
if (phy->dyn_tssi_tbl)
kfree(phy->tssi2dbm);
kfree(phy->lo_control);
phy->lo_control = NULL;
ssb_device_disable(dev->dev, 0);
ssb_bus_may_powerdown(dev->dev->bus);
}
/* Initialize a wireless core */
static int b43_wireless_core_init(struct b43_wldev *dev)
{
struct b43_wl *wl = dev->wl;
struct ssb_bus *bus = dev->dev->bus;
struct ssb_sprom *sprom = &bus->sprom;
struct b43_phy *phy = &dev->phy;
int err;
u32 hf, tmp;
B43_WARN_ON(b43_status(dev) != B43_STAT_UNINIT);
err = ssb_bus_powerup(bus, 0);
if (err)
goto out;
if (!ssb_device_is_enabled(dev->dev)) {
tmp = phy->gmode ? B43_TMSLOW_GMODE : 0;
b43_wireless_core_reset(dev, tmp);
}
if ((phy->type == B43_PHYTYPE_B) || (phy->type == B43_PHYTYPE_G)) {
phy->lo_control =
kzalloc(sizeof(*(phy->lo_control)), GFP_KERNEL);
if (!phy->lo_control) {
err = -ENOMEM;
goto err_busdown;
}
}
setup_struct_wldev_for_init(dev);
err = b43_phy_init_tssi2dbm_table(dev);
if (err)
goto err_kfree_lo_control;
/* Enable IRQ routing to this device. */
ssb_pcicore_dev_irqvecs_enable(&bus->pcicore, dev->dev);
b43_imcfglo_timeouts_workaround(dev);
b43_bluetooth_coext_disable(dev);
b43_phy_early_init(dev);
err = b43_chip_init(dev);
if (err)
goto err_kfree_tssitbl;
b43_shm_write16(dev, B43_SHM_SHARED,
B43_SHM_SH_WLCOREREV, dev->dev->id.revision);
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->r1.boardflags_lo & B43_BFL_PACTRL)
hf |= B43_HF_OFDMPABOOST;
} else if (phy->type == B43_PHYTYPE_B) {
hf |= B43_HF_SYMW;
if (phy->rev >= 2 && phy->radio_ver == 0x2050)
hf &= ~B43_HF_GDCW;
}
b43_hf_write(dev, hf);
/* Short/Long Retry Limit.
* The retry-limit is a 4-bit counter. Enforce this to avoid overflowing
* the chip-internal counter.
*/
tmp = limit_value(modparam_short_retry, 0, 0xF);
b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_SRLIMIT, tmp);
tmp = limit_value(modparam_long_retry, 0, 0xF);
b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_LRLIMIT, tmp);
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);
/* 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);
do {
if (b43_using_pio(dev)) {
err = b43_pio_init(dev);
} else {
err = b43_dma_init(dev);
if (!err)
b43_qos_init(dev);
}
} while (err == -EAGAIN);
if (err)
goto err_chip_exit;
//FIXME
#if 1
b43_write16(dev, 0x0612, 0x0050);
b43_shm_write16(dev, B43_SHM_SHARED, 0x0416, 0x0050);
b43_shm_write16(dev, B43_SHM_SHARED, 0x0414, 0x01F4);
#endif
b43_bluetooth_coext_enable(dev);
ssb_bus_powerup(bus, 1); /* Enable dynamic PCTL */
memset(wl->bssid, 0, ETH_ALEN);
memset(wl->mac_addr, 0, ETH_ALEN);
b43_upload_card_macaddress(dev);
b43_security_init(dev);
b43_rfkill_init(dev);
b43_rng_init(wl);
b43_set_status(dev, B43_STAT_INITIALIZED);
out:
return err;
err_chip_exit:
b43_chip_exit(dev);
err_kfree_tssitbl:
if (phy->dyn_tssi_tbl)
kfree(phy->tssi2dbm);
err_kfree_lo_control:
kfree(phy->lo_control);
phy->lo_control = NULL;
err_busdown:
ssb_bus_may_powerdown(bus);
B43_WARN_ON(b43_status(dev) != B43_STAT_UNINIT);
return err;
}
static int b43_add_interface(struct ieee80211_hw *hw,
struct ieee80211_if_init_conf *conf)
{
struct b43_wl *wl = hw_to_b43_wl(hw);
struct b43_wldev *dev;
unsigned long flags;
int err = -EOPNOTSUPP;
/* TODO: allow WDS/AP devices to coexist */
if (conf->type != IEEE80211_IF_TYPE_AP &&
conf->type != IEEE80211_IF_TYPE_STA &&
conf->type != IEEE80211_IF_TYPE_WDS &&
conf->type != IEEE80211_IF_TYPE_IBSS)
return -EOPNOTSUPP;
mutex_lock(&wl->mutex);
if (wl->operating)
goto out_mutex_unlock;
b43dbg(wl, "Adding Interface type %d\n", conf->type);
dev = wl->current_dev;
wl->operating = 1;
wl->if_id = conf->if_id;
wl->if_type = conf->type;
memcpy(wl->mac_addr, conf->mac_addr, ETH_ALEN);
spin_lock_irqsave(&wl->irq_lock, flags);
b43_adjust_opmode(dev);
b43_upload_card_macaddress(dev);
spin_unlock_irqrestore(&wl->irq_lock, flags);
err = 0;
out_mutex_unlock:
mutex_unlock(&wl->mutex);
return err;
}
static void b43_remove_interface(struct ieee80211_hw *hw,
struct ieee80211_if_init_conf *conf)
{
struct b43_wl *wl = hw_to_b43_wl(hw);
struct b43_wldev *dev = wl->current_dev;
unsigned long flags;
b43dbg(wl, "Removing Interface type %d\n", conf->type);
mutex_lock(&wl->mutex);
B43_WARN_ON(!wl->operating);
B43_WARN_ON(wl->if_id != conf->if_id);
wl->operating = 0;
spin_lock_irqsave(&wl->irq_lock, flags);
b43_adjust_opmode(dev);
memset(wl->mac_addr, 0, ETH_ALEN);
b43_upload_card_macaddress(dev);
spin_unlock_irqrestore(&wl->irq_lock, flags);
mutex_unlock(&wl->mutex);
}
static int b43_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;
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;
}
}
out_mutex_unlock:
mutex_unlock(&wl->mutex);
return err;
}
static void b43_stop(struct ieee80211_hw *hw)
{
struct b43_wl *wl = hw_to_b43_wl(hw);
struct b43_wldev *dev = wl->current_dev;
mutex_lock(&wl->mutex);
if (b43_status(dev) >= B43_STAT_STARTED)
b43_wireless_core_stop(dev);
b43_wireless_core_exit(dev);
mutex_unlock(&wl->mutex);
}
static const struct ieee80211_ops b43_hw_ops = {
.tx = b43_tx,
.conf_tx = b43_conf_tx,
.add_interface = b43_add_interface,
.remove_interface = b43_remove_interface,
.config = b43_dev_config,
.config_interface = b43_config_interface,
.configure_filter = b43_configure_filter,
.set_key = b43_dev_set_key,
.get_stats = b43_get_stats,
.get_tx_stats = b43_get_tx_stats,
.start = b43_start,
.stop = b43_stop,
};
/* 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)
b43_wireless_core_stop(dev);
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:
mutex_unlock(&wl->mutex);
if (err)
b43err(wl, "Controller restart FAILED\n");
else
b43info(wl, "Controller restarted\n");
}
static int b43_setup_modes(struct b43_wldev *dev,
int have_aphy, int have_bphy, int have_gphy)
{
struct ieee80211_hw *hw = dev->wl->hw;
struct ieee80211_hw_mode *mode;
struct b43_phy *phy = &dev->phy;
int cnt = 0;
int err;
/*FIXME: Don't tell ieee80211 about an A-PHY, because we currently don't support A-PHY. */
have_aphy = 0;
phy->possible_phymodes = 0;
for (; 1; cnt++) {
if (have_aphy) {
B43_WARN_ON(cnt >= B43_MAX_PHYHWMODES);
mode = &phy->hwmodes[cnt];
mode->mode = MODE_IEEE80211A;
mode->num_channels = b43_a_chantable_size;
mode->channels = b43_a_chantable;
mode->num_rates = b43_a_ratetable_size;
mode->rates = b43_a_ratetable;
err = ieee80211_register_hwmode(hw, mode);
if (err)
return err;
phy->possible_phymodes |= B43_PHYMODE_A;
have_aphy = 0;
continue;
}
if (have_bphy) {
B43_WARN_ON(cnt >= B43_MAX_PHYHWMODES);
mode = &phy->hwmodes[cnt];
mode->mode = MODE_IEEE80211B;
mode->num_channels = b43_bg_chantable_size;
mode->channels = b43_bg_chantable;
mode->num_rates = b43_b_ratetable_size;
mode->rates = b43_b_ratetable;
err = ieee80211_register_hwmode(hw, mode);
if (err)
return err;
phy->possible_phymodes |= B43_PHYMODE_B;
have_bphy = 0;
continue;
}
if (have_gphy) {
B43_WARN_ON(cnt >= B43_MAX_PHYHWMODES);
mode = &phy->hwmodes[cnt];
mode->mode = MODE_IEEE80211G;
mode->num_channels = b43_bg_chantable_size;
mode->channels = b43_bg_chantable;
mode->num_rates = b43_g_ratetable_size;
mode->rates = b43_g_ratetable;
err = ieee80211_register_hwmode(hw, mode);
if (err)
return err;
phy->possible_phymodes |= B43_PHYMODE_G;
have_gphy = 0;
continue;
}
break;
}
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);
}
static int b43_wireless_core_attach(struct b43_wldev *dev)
{
struct b43_wl *wl = dev->wl;
struct ssb_bus *bus = dev->dev->bus;
struct pci_dev *pdev = bus->host_pci;
int err;
int have_aphy = 0, have_bphy = 0, have_gphy = 0;
u32 tmp;
/* 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.
*/
err = ssb_bus_powerup(bus, 0);
if (err) {
b43err(wl, "Bus powerup failed\n");
goto out;
}
/* Get the PHY type. */
if (dev->dev->id.revision >= 5) {
u32 tmshigh;
tmshigh = ssb_read32(dev->dev, SSB_TMSHIGH);
have_aphy = !!(tmshigh & B43_TMSHIGH_APHY);
have_gphy = !!(tmshigh & B43_TMSHIGH_GPHY);
if (!have_aphy && !have_gphy)
have_bphy = 1;
} else if (dev->dev->id.revision == 4) {
have_gphy = 1;
have_aphy = 1;
} else
have_bphy = 1;
dev->phy.gmode = (have_gphy || have_bphy);
tmp = dev->phy.gmode ? B43_TMSLOW_GMODE : 0;
b43_wireless_core_reset(dev, tmp);
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_aphy = 0;
have_bphy = 0;
have_gphy = 0;
switch (dev->phy.type) {
case B43_PHYTYPE_A:
have_aphy = 1;
break;
case B43_PHYTYPE_B:
have_bphy = 1;
break;
case B43_PHYTYPE_G:
have_gphy = 1;
break;
default:
B43_WARN_ON(1);
}
}
dev->phy.gmode = (have_gphy || have_bphy);
tmp = dev->phy.gmode ? B43_TMSLOW_GMODE : 0;
b43_wireless_core_reset(dev, tmp);
err = b43_validate_chipaccess(dev);
if (err)
goto err_powerdown;
err = b43_setup_modes(dev, have_aphy, have_bphy, have_gphy);
if (err)
goto err_powerdown;
/* Now set some default "current_dev" */
if (!wl->current_dev)
wl->current_dev = dev;
INIT_WORK(&dev->restart_work, b43_chip_reset);
b43_radio_turn_off(dev, 1);
b43_switch_analog(dev, 0);
ssb_device_disable(dev->dev, 0);
ssb_bus_may_powerdown(bus);
out:
return err;
err_powerdown:
ssb_bus_may_powerdown(bus);
return err;
}
static void b43_one_core_detach(struct ssb_device *dev)
{
struct b43_wldev *wldev;
struct b43_wl *wl;
wldev = ssb_get_drvdata(dev);
wl = wldev->wl;
cancel_work_sync(&wldev->restart_work);
b43_debugfs_remove_device(wldev);
b43_wireless_core_detach(wldev);
list_del(&wldev->list);
wl->nr_devs--;
ssb_set_drvdata(dev, NULL);
kfree(wldev);
}
static int b43_one_core_attach(struct ssb_device *dev, struct b43_wl *wl)
{
struct b43_wldev *wldev;
struct pci_dev *pdev;
int err = -ENOMEM;
if (!list_empty(&wl->devlist)) {
/* We are not the first core on this chip. */
pdev = dev->bus->host_pci;
/* Only special chips support more than one wireless
* core, although some of the other chips have more than
* one wireless core as well. Check for this and
* bail out early.
*/
if (!pdev ||
((pdev->device != 0x4321) &&
(pdev->device != 0x4313) && (pdev->device != 0x431A))) {
b43dbg(wl, "Ignoring unconnected 802.11 core\n");
return -ENODEV;
}
}
wldev = kzalloc(sizeof(*wldev), GFP_KERNEL);
if (!wldev)
goto out;
wldev->dev = dev;
wldev->wl = wl;
b43_set_status(wldev, B43_STAT_UNINIT);
wldev->bad_frames_preempt = modparam_bad_frames_preempt;
tasklet_init(&wldev->isr_tasklet,
(void (*)(unsigned long))b43_interrupt_tasklet,
(unsigned long)wldev);
if (modparam_pio)
wldev->__using_pio = 1;
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++;
ssb_set_drvdata(dev, wldev);
b43_debugfs_add_device(wldev);
out:
return err;
err_kfree_wldev:
kfree(wldev);
return err;
}
static void b43_sprom_fixup(struct ssb_bus *bus)
{
/* boardflags workarounds */
if (bus->boardinfo.vendor == SSB_BOARDVENDOR_DELL &&
bus->chip_id == 0x4301 && bus->boardinfo.rev == 0x74)
bus->sprom.r1.boardflags_lo |= B43_BFL_BTCOEXIST;
if (bus->boardinfo.vendor == PCI_VENDOR_ID_APPLE &&
bus->boardinfo.type == 0x4E && bus->boardinfo.rev > 0x40)
bus->sprom.r1.boardflags_lo |= B43_BFL_PACTRL;
/* Handle case when gain is not set in sprom */
if (bus->sprom.r1.antenna_gain_a == 0xFF)
bus->sprom.r1.antenna_gain_a = 2;
if (bus->sprom.r1.antenna_gain_bg == 0xFF)
bus->sprom.r1.antenna_gain_bg = 2;
/* Convert Antennagain values to Q5.2 */
bus->sprom.r1.antenna_gain_a <<= 2;
bus->sprom.r1.antenna_gain_bg <<= 2;
}
static void b43_wireless_exit(struct ssb_device *dev, struct b43_wl *wl)
{
struct ieee80211_hw *hw = wl->hw;
ssb_set_devtypedata(dev, NULL);
ieee80211_free_hw(hw);
}
static int b43_wireless_init(struct ssb_device *dev)
{
struct ssb_sprom *sprom = &dev->bus->sprom;
struct ieee80211_hw *hw;
struct b43_wl *wl;
int err = -ENOMEM;
b43_sprom_fixup(dev->bus);
hw = ieee80211_alloc_hw(sizeof(*wl), &b43_hw_ops);
if (!hw) {
b43err(NULL, "Could not allocate ieee80211 device\n");
goto out;
}
/* fill hw info */
hw->flags = IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE;
hw->max_signal = 100;
hw->max_rssi = -110;
hw->max_noise = -110;
hw->queues = 1; /* FIXME: hardware has more queues */
SET_IEEE80211_DEV(hw, dev->dev);
if (is_valid_ether_addr(sprom->r1.et1mac))
SET_IEEE80211_PERM_ADDR(hw, sprom->r1.et1mac);
else
SET_IEEE80211_PERM_ADDR(hw, sprom->r1.il0mac);
/* Get and initialize struct b43_wl */
wl = hw_to_b43_wl(hw);
memset(wl, 0, sizeof(*wl));
wl->hw = hw;
spin_lock_init(&wl->irq_lock);
spin_lock_init(&wl->leds_lock);
mutex_init(&wl->mutex);
INIT_LIST_HEAD(&wl->devlist);
ssb_set_devtypedata(dev, wl);
b43info(wl, "Broadcom %04X WLAN found\n", dev->bus->chip_id);
err = 0;
out:
return err;
}
static int b43_probe(struct ssb_device *dev, const struct ssb_device_id *id)
{
struct b43_wl *wl;
int err;
int first = 0;
wl = ssb_get_devtypedata(dev);
if (!wl) {
/* Probing the first core. Must setup common struct b43_wl */
first = 1;
err = b43_wireless_init(dev);
if (err)
goto out;
wl = ssb_get_devtypedata(dev);
B43_WARN_ON(!wl);
}
err = b43_one_core_attach(dev, wl);
if (err)
goto err_wireless_exit;
if (first) {
err = ieee80211_register_hw(wl->hw);
if (err)
goto err_one_core_detach;
}
out:
return err;
err_one_core_detach:
b43_one_core_detach(dev);
err_wireless_exit:
if (first)
b43_wireless_exit(dev, wl);
return err;
}
static void b43_remove(struct ssb_device *dev)
{
struct b43_wl *wl = ssb_get_devtypedata(dev);
struct b43_wldev *wldev = ssb_get_drvdata(dev);
B43_WARN_ON(!wl);
if (wl->current_dev == wldev)
ieee80211_unregister_hw(wl->hw);
b43_one_core_detach(dev);
if (list_empty(&wl->devlist)) {
/* Last core on the chip unregistered.
* We can destroy common struct b43_wl.
*/
b43_wireless_exit(dev, wl);
}
}
/* 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);
queue_work(dev->wl->hw->workqueue, &dev->restart_work);
}
#ifdef CONFIG_PM
static int b43_suspend(struct ssb_device *dev, pm_message_t state)
{
struct b43_wldev *wldev = ssb_get_drvdata(dev);
struct b43_wl *wl = wldev->wl;
b43dbg(wl, "Suspending...\n");
mutex_lock(&wl->mutex);
wldev->suspend_init_status = b43_status(wldev);
if (wldev->suspend_init_status >= B43_STAT_STARTED)
b43_wireless_core_stop(wldev);
if (wldev->suspend_init_status >= B43_STAT_INITIALIZED)
b43_wireless_core_exit(wldev);
mutex_unlock(&wl->mutex);
b43dbg(wl, "Device suspended.\n");
return 0;
}
static int b43_resume(struct ssb_device *dev)
{
struct b43_wldev *wldev = ssb_get_drvdata(dev);
struct b43_wl *wl = wldev->wl;
int err = 0;
b43dbg(wl, "Resuming...\n");
mutex_lock(&wl->mutex);
if (wldev->suspend_init_status >= B43_STAT_INITIALIZED) {
err = b43_wireless_core_init(wldev);
if (err) {
b43err(wl, "Resume failed at core init\n");
goto out;
}
}
if (wldev->suspend_init_status >= B43_STAT_STARTED) {
err = b43_wireless_core_start(wldev);
if (err) {
b43_wireless_core_exit(wldev);
b43err(wl, "Resume failed at core start\n");
goto out;
}
}
mutex_unlock(&wl->mutex);
b43dbg(wl, "Device resumed.\n");
out:
return err;
}
#else /* CONFIG_PM */
# define b43_suspend NULL
# define b43_resume NULL
#endif /* CONFIG_PM */
static struct ssb_driver b43_ssb_driver = {
.name = KBUILD_MODNAME,
.id_table = b43_ssb_tbl,
.probe = b43_probe,
.remove = b43_remove,
.suspend = b43_suspend,
.resume = b43_resume,
};
static int __init b43_init(void)
{
int err;
b43_debugfs_init();
err = b43_pcmcia_init();
if (err)
goto err_dfs_exit;
err = ssb_driver_register(&b43_ssb_driver);
if (err)
goto err_pcmcia_exit;
return err;
err_pcmcia_exit:
b43_pcmcia_exit();
err_dfs_exit:
b43_debugfs_exit();
return err;
}
static void __exit b43_exit(void)
{
ssb_driver_unregister(&b43_ssb_driver);
b43_pcmcia_exit();
b43_debugfs_exit();
}
module_init(b43_init)
module_exit(b43_exit)
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