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android_kernel_xiaomi_sm8350/drivers/net/wireless/bcm43xx/bcm43xx_main.c
Michael Buesch 81e171b95d [PATCH] bcm43xx: Fix low-traffic netdev watchdog TX timeouts 
This fixes a netdev watchdog timeout problem.
The software needs to call netif_tx_disable before running the
hardware calibration code. The problem condition can be shown by the
following timegraph.

|---5secs - ~10 jiffies time---|---|OOPS
^                              ^
last real TX                   periodic work stops netif

At OOPS, the following happens:
The watchdog timer triggers, because the timeout of 5secs
is over. The watchdog first checks for stopped TX.
_Usually_ TX is only stopped from the TX handler to indicate
a full TX queue. But this is different. We need to stop TX here,
regardless of the TX queue state. So the watchdog recognizes
the stopped device and assumes it is stopped due to full
TX queues (Which is a _wrong_ assumption in this case). It then
tests how far the last TX has been in the past. If it's more than
5secs (which is the case for low or no traffic), it will fire
a TX timeout.

Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2006-10-31 22:15:40 -05:00

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/*
Broadcom BCM43xx wireless driver
Copyright (c) 2005 Martin Langer <martin-langer@gmx.de>,
Stefano Brivio <st3@riseup.net>
Michael Buesch <mbuesch@freenet.de>
Danny van Dyk <kugelfang@gentoo.org>
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 <net/iw_handler.h>
#include "bcm43xx.h"
#include "bcm43xx_main.h"
#include "bcm43xx_debugfs.h"
#include "bcm43xx_radio.h"
#include "bcm43xx_phy.h"
#include "bcm43xx_dma.h"
#include "bcm43xx_pio.h"
#include "bcm43xx_power.h"
#include "bcm43xx_wx.h"
#include "bcm43xx_ethtool.h"
#include "bcm43xx_xmit.h"
#include "bcm43xx_sysfs.h"
MODULE_DESCRIPTION("Broadcom BCM43xx wireless driver");
MODULE_AUTHOR("Martin Langer");
MODULE_AUTHOR("Stefano Brivio");
MODULE_AUTHOR("Michael Buesch");
MODULE_LICENSE("GPL");
#ifdef CONFIG_BCM947XX
extern char *nvram_get(char *name);
#endif
#if defined(CONFIG_BCM43XX_DMA) && defined(CONFIG_BCM43XX_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_BCM43XX_DMA)
# define modparam_pio 0
#elif defined(CONFIG_BCM43XX_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 = BCM43xx_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 = BCM43xx_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 int modparam_locale = -1;
module_param_named(locale, modparam_locale, int, 0444);
MODULE_PARM_DESC(country, "Select LocaleCode 0-11 (For travelers)");
static int modparam_noleds;
module_param_named(noleds, modparam_noleds, int, 0444);
MODULE_PARM_DESC(noleds, "Turn off all LED activity");
#ifdef CONFIG_BCM43XX_DEBUG
static char modparam_fwpostfix[64];
module_param_string(fwpostfix, modparam_fwpostfix, 64, 0444);
MODULE_PARM_DESC(fwpostfix, "Postfix for .fw files. Useful for debugging.");
#else
# define modparam_fwpostfix ""
#endif /* CONFIG_BCM43XX_DEBUG*/
/* If you want to debug with just a single device, enable this,
* where the string is the pci device ID (as given by the kernel's
* pci_name function) of the device to be used.
*/
//#define DEBUG_SINGLE_DEVICE_ONLY "0001:11:00.0"
/* If you want to enable printing of each MMIO access, enable this. */
//#define DEBUG_ENABLE_MMIO_PRINT
/* If you want to enable printing of MMIO access within
* ucode/pcm upload, initvals write, enable this.
*/
//#define DEBUG_ENABLE_UCODE_MMIO_PRINT
/* If you want to enable printing of PCI Config Space access, enable this */
//#define DEBUG_ENABLE_PCILOG
/* Detailed list maintained at:
* http://openfacts.berlios.de/index-en.phtml?title=Bcm43xxDevices
*/
static struct pci_device_id bcm43xx_pci_tbl[] = {
/* Broadcom 4303 802.11b */
{ PCI_VENDOR_ID_BROADCOM, 0x4301, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
/* Broadcom 4307 802.11b */
{ PCI_VENDOR_ID_BROADCOM, 0x4307, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
/* Broadcom 4318 802.11b/g */
{ PCI_VENDOR_ID_BROADCOM, 0x4318, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
/* Broadcom 4319 802.11a/b/g */
{ PCI_VENDOR_ID_BROADCOM, 0x4319, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
/* Broadcom 4306 802.11b/g */
{ PCI_VENDOR_ID_BROADCOM, 0x4320, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
/* Broadcom 4306 802.11a */
// { PCI_VENDOR_ID_BROADCOM, 0x4321, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
/* Broadcom 4309 802.11a/b/g */
{ PCI_VENDOR_ID_BROADCOM, 0x4324, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
/* Broadcom 43XG 802.11b/g */
{ PCI_VENDOR_ID_BROADCOM, 0x4325, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
#ifdef CONFIG_BCM947XX
/* SB bus on BCM947xx */
{ PCI_VENDOR_ID_BROADCOM, 0x0800, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
#endif
{ 0 },
};
MODULE_DEVICE_TABLE(pci, bcm43xx_pci_tbl);
static void bcm43xx_ram_write(struct bcm43xx_private *bcm, u16 offset, u32 val)
{
u32 status;
status = bcm43xx_read32(bcm, BCM43xx_MMIO_STATUS_BITFIELD);
if (!(status & BCM43xx_SBF_XFER_REG_BYTESWAP))
val = swab32(val);
bcm43xx_write32(bcm, BCM43xx_MMIO_RAM_CONTROL, offset);
mmiowb();
bcm43xx_write32(bcm, BCM43xx_MMIO_RAM_DATA, val);
}
static inline
void bcm43xx_shm_control_word(struct bcm43xx_private *bcm,
u16 routing, u16 offset)
{
u32 control;
/* "offset" is the WORD offset. */
control = routing;
control <<= 16;
control |= offset;
bcm43xx_write32(bcm, BCM43xx_MMIO_SHM_CONTROL, control);
}
u32 bcm43xx_shm_read32(struct bcm43xx_private *bcm,
u16 routing, u16 offset)
{
u32 ret;
if (routing == BCM43xx_SHM_SHARED) {
if (offset & 0x0003) {
/* Unaligned access */
bcm43xx_shm_control_word(bcm, routing, offset >> 2);
ret = bcm43xx_read16(bcm, BCM43xx_MMIO_SHM_DATA_UNALIGNED);
ret <<= 16;
bcm43xx_shm_control_word(bcm, routing, (offset >> 2) + 1);
ret |= bcm43xx_read16(bcm, BCM43xx_MMIO_SHM_DATA);
return ret;
}
offset >>= 2;
}
bcm43xx_shm_control_word(bcm, routing, offset);
ret = bcm43xx_read32(bcm, BCM43xx_MMIO_SHM_DATA);
return ret;
}
u16 bcm43xx_shm_read16(struct bcm43xx_private *bcm,
u16 routing, u16 offset)
{
u16 ret;
if (routing == BCM43xx_SHM_SHARED) {
if (offset & 0x0003) {
/* Unaligned access */
bcm43xx_shm_control_word(bcm, routing, offset >> 2);
ret = bcm43xx_read16(bcm, BCM43xx_MMIO_SHM_DATA_UNALIGNED);
return ret;
}
offset >>= 2;
}
bcm43xx_shm_control_word(bcm, routing, offset);
ret = bcm43xx_read16(bcm, BCM43xx_MMIO_SHM_DATA);
return ret;
}
void bcm43xx_shm_write32(struct bcm43xx_private *bcm,
u16 routing, u16 offset,
u32 value)
{
if (routing == BCM43xx_SHM_SHARED) {
if (offset & 0x0003) {
/* Unaligned access */
bcm43xx_shm_control_word(bcm, routing, offset >> 2);
mmiowb();
bcm43xx_write16(bcm, BCM43xx_MMIO_SHM_DATA_UNALIGNED,
(value >> 16) & 0xffff);
mmiowb();
bcm43xx_shm_control_word(bcm, routing, (offset >> 2) + 1);
mmiowb();
bcm43xx_write16(bcm, BCM43xx_MMIO_SHM_DATA,
value & 0xffff);
return;
}
offset >>= 2;
}
bcm43xx_shm_control_word(bcm, routing, offset);
mmiowb();
bcm43xx_write32(bcm, BCM43xx_MMIO_SHM_DATA, value);
}
void bcm43xx_shm_write16(struct bcm43xx_private *bcm,
u16 routing, u16 offset,
u16 value)
{
if (routing == BCM43xx_SHM_SHARED) {
if (offset & 0x0003) {
/* Unaligned access */
bcm43xx_shm_control_word(bcm, routing, offset >> 2);
mmiowb();
bcm43xx_write16(bcm, BCM43xx_MMIO_SHM_DATA_UNALIGNED,
value);
return;
}
offset >>= 2;
}
bcm43xx_shm_control_word(bcm, routing, offset);
mmiowb();
bcm43xx_write16(bcm, BCM43xx_MMIO_SHM_DATA, value);
}
void bcm43xx_tsf_read(struct bcm43xx_private *bcm, 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 (bcm->current_core->rev >= 3) {
u32 low, high, high2;
do {
high = bcm43xx_read32(bcm, BCM43xx_MMIO_REV3PLUS_TSF_HIGH);
low = bcm43xx_read32(bcm, BCM43xx_MMIO_REV3PLUS_TSF_LOW);
high2 = bcm43xx_read32(bcm, BCM43xx_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 = bcm43xx_read16(bcm, BCM43xx_MMIO_TSF_3);
v2 = bcm43xx_read16(bcm, BCM43xx_MMIO_TSF_2);
v1 = bcm43xx_read16(bcm, BCM43xx_MMIO_TSF_1);
v0 = bcm43xx_read16(bcm, BCM43xx_MMIO_TSF_0);
test3 = bcm43xx_read16(bcm, BCM43xx_MMIO_TSF_3);
test2 = bcm43xx_read16(bcm, BCM43xx_MMIO_TSF_2);
test1 = bcm43xx_read16(bcm, BCM43xx_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;
}
}
void bcm43xx_tsf_write(struct bcm43xx_private *bcm, u64 tsf)
{
u32 status;
status = bcm43xx_read32(bcm, BCM43xx_MMIO_STATUS_BITFIELD);
status |= BCM43xx_SBF_TIME_UPDATE;
bcm43xx_write32(bcm, BCM43xx_MMIO_STATUS_BITFIELD, status);
mmiowb();
/* 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 (bcm->current_core->rev >= 3) {
u32 lo = (tsf & 0x00000000FFFFFFFFULL);
u32 hi = (tsf & 0xFFFFFFFF00000000ULL) >> 32;
bcm43xx_write32(bcm, BCM43xx_MMIO_REV3PLUS_TSF_LOW, 0);
mmiowb();
bcm43xx_write32(bcm, BCM43xx_MMIO_REV3PLUS_TSF_HIGH, hi);
mmiowb();
bcm43xx_write32(bcm, BCM43xx_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;
bcm43xx_write16(bcm, BCM43xx_MMIO_TSF_0, 0);
mmiowb();
bcm43xx_write16(bcm, BCM43xx_MMIO_TSF_3, v3);
mmiowb();
bcm43xx_write16(bcm, BCM43xx_MMIO_TSF_2, v2);
mmiowb();
bcm43xx_write16(bcm, BCM43xx_MMIO_TSF_1, v1);
mmiowb();
bcm43xx_write16(bcm, BCM43xx_MMIO_TSF_0, v0);
}
status = bcm43xx_read32(bcm, BCM43xx_MMIO_STATUS_BITFIELD);
status &= ~BCM43xx_SBF_TIME_UPDATE;
bcm43xx_write32(bcm, BCM43xx_MMIO_STATUS_BITFIELD, status);
}
static
void bcm43xx_macfilter_set(struct bcm43xx_private *bcm,
u16 offset,
const u8 *mac)
{
u16 data;
offset |= 0x0020;
bcm43xx_write16(bcm, BCM43xx_MMIO_MACFILTER_CONTROL, offset);
data = mac[0];
data |= mac[1] << 8;
bcm43xx_write16(bcm, BCM43xx_MMIO_MACFILTER_DATA, data);
data = mac[2];
data |= mac[3] << 8;
bcm43xx_write16(bcm, BCM43xx_MMIO_MACFILTER_DATA, data);
data = mac[4];
data |= mac[5] << 8;
bcm43xx_write16(bcm, BCM43xx_MMIO_MACFILTER_DATA, data);
}
static void bcm43xx_macfilter_clear(struct bcm43xx_private *bcm,
u16 offset)
{
const u8 zero_addr[ETH_ALEN] = { 0 };
bcm43xx_macfilter_set(bcm, offset, zero_addr);
}
static void bcm43xx_write_mac_bssid_templates(struct bcm43xx_private *bcm)
{
const u8 *mac = (const u8 *)(bcm->net_dev->dev_addr);
const u8 *bssid = (const u8 *)(bcm->ieee->bssid);
u8 mac_bssid[ETH_ALEN * 2];
int i;
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))
bcm43xx_ram_write(bcm, 0x20 + i, *((u32 *)(mac_bssid + i)));
for (i = 0; i < ARRAY_SIZE(mac_bssid); i += sizeof(u32))
bcm43xx_ram_write(bcm, 0x78 + i, *((u32 *)(mac_bssid + i)));
for (i = 0; i < ARRAY_SIZE(mac_bssid); i += sizeof(u32))
bcm43xx_ram_write(bcm, 0x478 + i, *((u32 *)(mac_bssid + i)));
}
//FIXME: Well, we should probably call them from somewhere.
#if 0
static void bcm43xx_set_slot_time(struct bcm43xx_private *bcm, u16 slot_time)
{
/* slot_time is in usec. */
if (bcm43xx_current_phy(bcm)->type != BCM43xx_PHYTYPE_G)
return;
bcm43xx_write16(bcm, 0x684, 510 + slot_time);
bcm43xx_shm_write16(bcm, BCM43xx_SHM_SHARED, 0x0010, slot_time);
}
static void bcm43xx_short_slot_timing_enable(struct bcm43xx_private *bcm)
{
bcm43xx_set_slot_time(bcm, 9);
}
static void bcm43xx_short_slot_timing_disable(struct bcm43xx_private *bcm)
{
bcm43xx_set_slot_time(bcm, 20);
}
#endif
/* FIXME: To get the MAC-filter working, we need to implement the
* following functions (and rename them :)
*/
#if 0
static void bcm43xx_disassociate(struct bcm43xx_private *bcm)
{
bcm43xx_mac_suspend(bcm);
bcm43xx_macfilter_clear(bcm, BCM43xx_MACFILTER_ASSOC);
bcm43xx_ram_write(bcm, 0x0026, 0x0000);
bcm43xx_ram_write(bcm, 0x0028, 0x0000);
bcm43xx_ram_write(bcm, 0x007E, 0x0000);
bcm43xx_ram_write(bcm, 0x0080, 0x0000);
bcm43xx_ram_write(bcm, 0x047E, 0x0000);
bcm43xx_ram_write(bcm, 0x0480, 0x0000);
if (bcm->current_core->rev < 3) {
bcm43xx_write16(bcm, 0x0610, 0x8000);
bcm43xx_write16(bcm, 0x060E, 0x0000);
} else
bcm43xx_write32(bcm, 0x0188, 0x80000000);
bcm43xx_shm_write32(bcm, BCM43xx_SHM_WIRELESS, 0x0004, 0x000003ff);
if (bcm43xx_current_phy(bcm)->type == BCM43xx_PHYTYPE_G &&
ieee80211_is_ofdm_rate(bcm->softmac->txrates.default_rate))
bcm43xx_short_slot_timing_enable(bcm);
bcm43xx_mac_enable(bcm);
}
static void bcm43xx_associate(struct bcm43xx_private *bcm,
const u8 *mac)
{
memcpy(bcm->ieee->bssid, mac, ETH_ALEN);
bcm43xx_mac_suspend(bcm);
bcm43xx_macfilter_set(bcm, BCM43xx_MACFILTER_ASSOC, mac);
bcm43xx_write_mac_bssid_templates(bcm);
bcm43xx_mac_enable(bcm);
}
#endif
/* Enable a Generic IRQ. "mask" is the mask of which IRQs to enable.
* Returns the _previously_ enabled IRQ mask.
*/
static inline u32 bcm43xx_interrupt_enable(struct bcm43xx_private *bcm, u32 mask)
{
u32 old_mask;
old_mask = bcm43xx_read32(bcm, BCM43xx_MMIO_GEN_IRQ_MASK);
bcm43xx_write32(bcm, BCM43xx_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 bcm43xx_interrupt_disable(struct bcm43xx_private *bcm, u32 mask)
{
u32 old_mask;
old_mask = bcm43xx_read32(bcm, BCM43xx_MMIO_GEN_IRQ_MASK);
bcm43xx_write32(bcm, BCM43xx_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 bcm43xx_synchronize_irq(struct bcm43xx_private *bcm)
{
synchronize_irq(bcm->irq);
tasklet_disable(&bcm->isr_tasklet);
}
/* Make sure we don't receive more data from the device. */
static int bcm43xx_disable_interrupts_sync(struct bcm43xx_private *bcm)
{
unsigned long flags;
spin_lock_irqsave(&bcm->irq_lock, flags);
if (unlikely(bcm43xx_status(bcm) != BCM43xx_STAT_INITIALIZED)) {
spin_unlock_irqrestore(&bcm->irq_lock, flags);
return -EBUSY;
}
bcm43xx_interrupt_disable(bcm, BCM43xx_IRQ_ALL);
bcm43xx_read32(bcm, BCM43xx_MMIO_GEN_IRQ_MASK); /* flush */
spin_unlock_irqrestore(&bcm->irq_lock, flags);
bcm43xx_synchronize_irq(bcm);
return 0;
}
static int bcm43xx_read_radioinfo(struct bcm43xx_private *bcm)
{
struct bcm43xx_radioinfo *radio = bcm43xx_current_radio(bcm);
struct bcm43xx_phyinfo *phy = bcm43xx_current_phy(bcm);
u32 radio_id;
u16 manufact;
u16 version;
u8 revision;
if (bcm->chip_id == 0x4317) {
if (bcm->chip_rev == 0x00)
radio_id = 0x3205017F;
else if (bcm->chip_rev == 0x01)
radio_id = 0x4205017F;
else
radio_id = 0x5205017F;
} else {
bcm43xx_write16(bcm, BCM43xx_MMIO_RADIO_CONTROL, BCM43xx_RADIOCTL_ID);
radio_id = bcm43xx_read16(bcm, BCM43xx_MMIO_RADIO_DATA_HIGH);
radio_id <<= 16;
bcm43xx_write16(bcm, BCM43xx_MMIO_RADIO_CONTROL, BCM43xx_RADIOCTL_ID);
radio_id |= bcm43xx_read16(bcm, BCM43xx_MMIO_RADIO_DATA_LOW);
}
manufact = (radio_id & 0x00000FFF);
version = (radio_id & 0x0FFFF000) >> 12;
revision = (radio_id & 0xF0000000) >> 28;
dprintk(KERN_INFO PFX "Detected Radio: ID: %x (Manuf: %x Ver: %x Rev: %x)\n",
radio_id, manufact, version, revision);
switch (phy->type) {
case BCM43xx_PHYTYPE_A:
if ((version != 0x2060) || (revision != 1) || (manufact != 0x17f))
goto err_unsupported_radio;
break;
case BCM43xx_PHYTYPE_B:
if ((version & 0xFFF0) != 0x2050)
goto err_unsupported_radio;
break;
case BCM43xx_PHYTYPE_G:
if (version != 0x2050)
goto err_unsupported_radio;
break;
}
radio->manufact = manufact;
radio->version = version;
radio->revision = revision;
if (phy->type == BCM43xx_PHYTYPE_A)
radio->txpower_desired = bcm->sprom.maxpower_aphy;
else
radio->txpower_desired = bcm->sprom.maxpower_bgphy;
return 0;
err_unsupported_radio:
printk(KERN_ERR PFX "Unsupported Radio connected to the PHY!\n");
return -ENODEV;
}
static const char * bcm43xx_locale_iso(u8 locale)
{
/* ISO 3166-1 country codes.
* Note that there aren't ISO 3166-1 codes for
* all or locales. (Not all locales are countries)
*/
switch (locale) {
case BCM43xx_LOCALE_WORLD:
case BCM43xx_LOCALE_ALL:
return "XX";
case BCM43xx_LOCALE_THAILAND:
return "TH";
case BCM43xx_LOCALE_ISRAEL:
return "IL";
case BCM43xx_LOCALE_JORDAN:
return "JO";
case BCM43xx_LOCALE_CHINA:
return "CN";
case BCM43xx_LOCALE_JAPAN:
case BCM43xx_LOCALE_JAPAN_HIGH:
return "JP";
case BCM43xx_LOCALE_USA_CANADA_ANZ:
case BCM43xx_LOCALE_USA_LOW:
return "US";
case BCM43xx_LOCALE_EUROPE:
return "EU";
case BCM43xx_LOCALE_NONE:
return " ";
}
assert(0);
return " ";
}
static const char * bcm43xx_locale_string(u8 locale)
{
switch (locale) {
case BCM43xx_LOCALE_WORLD:
return "World";
case BCM43xx_LOCALE_THAILAND:
return "Thailand";
case BCM43xx_LOCALE_ISRAEL:
return "Israel";
case BCM43xx_LOCALE_JORDAN:
return "Jordan";
case BCM43xx_LOCALE_CHINA:
return "China";
case BCM43xx_LOCALE_JAPAN:
return "Japan";
case BCM43xx_LOCALE_USA_CANADA_ANZ:
return "USA/Canada/ANZ";
case BCM43xx_LOCALE_EUROPE:
return "Europe";
case BCM43xx_LOCALE_USA_LOW:
return "USAlow";
case BCM43xx_LOCALE_JAPAN_HIGH:
return "JapanHigh";
case BCM43xx_LOCALE_ALL:
return "All";
case BCM43xx_LOCALE_NONE:
return "None";
}
assert(0);
return "";
}
static inline u8 bcm43xx_crc8(u8 crc, u8 data)
{
static const u8 t[] = {
0x00, 0xF7, 0xB9, 0x4E, 0x25, 0xD2, 0x9C, 0x6B,
0x4A, 0xBD, 0xF3, 0x04, 0x6F, 0x98, 0xD6, 0x21,
0x94, 0x63, 0x2D, 0xDA, 0xB1, 0x46, 0x08, 0xFF,
0xDE, 0x29, 0x67, 0x90, 0xFB, 0x0C, 0x42, 0xB5,
0x7F, 0x88, 0xC6, 0x31, 0x5A, 0xAD, 0xE3, 0x14,
0x35, 0xC2, 0x8C, 0x7B, 0x10, 0xE7, 0xA9, 0x5E,
0xEB, 0x1C, 0x52, 0xA5, 0xCE, 0x39, 0x77, 0x80,
0xA1, 0x56, 0x18, 0xEF, 0x84, 0x73, 0x3D, 0xCA,
0xFE, 0x09, 0x47, 0xB0, 0xDB, 0x2C, 0x62, 0x95,
0xB4, 0x43, 0x0D, 0xFA, 0x91, 0x66, 0x28, 0xDF,
0x6A, 0x9D, 0xD3, 0x24, 0x4F, 0xB8, 0xF6, 0x01,
0x20, 0xD7, 0x99, 0x6E, 0x05, 0xF2, 0xBC, 0x4B,
0x81, 0x76, 0x38, 0xCF, 0xA4, 0x53, 0x1D, 0xEA,
0xCB, 0x3C, 0x72, 0x85, 0xEE, 0x19, 0x57, 0xA0,
0x15, 0xE2, 0xAC, 0x5B, 0x30, 0xC7, 0x89, 0x7E,
0x5F, 0xA8, 0xE6, 0x11, 0x7A, 0x8D, 0xC3, 0x34,
0xAB, 0x5C, 0x12, 0xE5, 0x8E, 0x79, 0x37, 0xC0,
0xE1, 0x16, 0x58, 0xAF, 0xC4, 0x33, 0x7D, 0x8A,
0x3F, 0xC8, 0x86, 0x71, 0x1A, 0xED, 0xA3, 0x54,
0x75, 0x82, 0xCC, 0x3B, 0x50, 0xA7, 0xE9, 0x1E,
0xD4, 0x23, 0x6D, 0x9A, 0xF1, 0x06, 0x48, 0xBF,
0x9E, 0x69, 0x27, 0xD0, 0xBB, 0x4C, 0x02, 0xF5,
0x40, 0xB7, 0xF9, 0x0E, 0x65, 0x92, 0xDC, 0x2B,
0x0A, 0xFD, 0xB3, 0x44, 0x2F, 0xD8, 0x96, 0x61,
0x55, 0xA2, 0xEC, 0x1B, 0x70, 0x87, 0xC9, 0x3E,
0x1F, 0xE8, 0xA6, 0x51, 0x3A, 0xCD, 0x83, 0x74,
0xC1, 0x36, 0x78, 0x8F, 0xE4, 0x13, 0x5D, 0xAA,
0x8B, 0x7C, 0x32, 0xC5, 0xAE, 0x59, 0x17, 0xE0,
0x2A, 0xDD, 0x93, 0x64, 0x0F, 0xF8, 0xB6, 0x41,
0x60, 0x97, 0xD9, 0x2E, 0x45, 0xB2, 0xFC, 0x0B,
0xBE, 0x49, 0x07, 0xF0, 0x9B, 0x6C, 0x22, 0xD5,
0xF4, 0x03, 0x4D, 0xBA, 0xD1, 0x26, 0x68, 0x9F,
};
return t[crc ^ data];
}
static u8 bcm43xx_sprom_crc(const u16 *sprom)
{
int word;
u8 crc = 0xFF;
for (word = 0; word < BCM43xx_SPROM_SIZE - 1; word++) {
crc = bcm43xx_crc8(crc, sprom[word] & 0x00FF);
crc = bcm43xx_crc8(crc, (sprom[word] & 0xFF00) >> 8);
}
crc = bcm43xx_crc8(crc, sprom[BCM43xx_SPROM_VERSION] & 0x00FF);
crc ^= 0xFF;
return crc;
}
int bcm43xx_sprom_read(struct bcm43xx_private *bcm, u16 *sprom)
{
int i;
u8 crc, expected_crc;
for (i = 0; i < BCM43xx_SPROM_SIZE; i++)
sprom[i] = bcm43xx_read16(bcm, BCM43xx_SPROM_BASE + (i * 2));
/* CRC-8 check. */
crc = bcm43xx_sprom_crc(sprom);
expected_crc = (sprom[BCM43xx_SPROM_VERSION] & 0xFF00) >> 8;
if (crc != expected_crc) {
printk(KERN_WARNING PFX "WARNING: Invalid SPROM checksum "
"(0x%02X, expected: 0x%02X)\n",
crc, expected_crc);
return -EINVAL;
}
return 0;
}
int bcm43xx_sprom_write(struct bcm43xx_private *bcm, const u16 *sprom)
{
int i, err;
u8 crc, expected_crc;
u32 spromctl;
/* CRC-8 validation of the input data. */
crc = bcm43xx_sprom_crc(sprom);
expected_crc = (sprom[BCM43xx_SPROM_VERSION] & 0xFF00) >> 8;
if (crc != expected_crc) {
printk(KERN_ERR PFX "SPROM input data: Invalid CRC\n");
return -EINVAL;
}
printk(KERN_INFO PFX "Writing SPROM. Do NOT turn off the power! Please stand by...\n");
err = bcm43xx_pci_read_config32(bcm, BCM43xx_PCICFG_SPROMCTL, &spromctl);
if (err)
goto err_ctlreg;
spromctl |= 0x10; /* SPROM WRITE enable. */
bcm43xx_pci_write_config32(bcm, BCM43xx_PCICFG_SPROMCTL, spromctl);
if (err)
goto err_ctlreg;
/* We must burn lots of CPU cycles here, but that does not
* really matter as one does not write the SPROM every other minute...
*/
printk(KERN_INFO PFX "[ 0%%");
mdelay(500);
for (i = 0; i < BCM43xx_SPROM_SIZE; i++) {
if (i == 16)
printk("25%%");
else if (i == 32)
printk("50%%");
else if (i == 48)
printk("75%%");
else if (i % 2)
printk(".");
bcm43xx_write16(bcm, BCM43xx_SPROM_BASE + (i * 2), sprom[i]);
mmiowb();
mdelay(20);
}
spromctl &= ~0x10; /* SPROM WRITE enable. */
bcm43xx_pci_write_config32(bcm, BCM43xx_PCICFG_SPROMCTL, spromctl);
if (err)
goto err_ctlreg;
mdelay(500);
printk("100%% ]\n");
printk(KERN_INFO PFX "SPROM written.\n");
bcm43xx_controller_restart(bcm, "SPROM update");
return 0;
err_ctlreg:
printk(KERN_ERR PFX "Could not access SPROM control register.\n");
return -ENODEV;
}
static int bcm43xx_sprom_extract(struct bcm43xx_private *bcm)
{
u16 value;
u16 *sprom;
#ifdef CONFIG_BCM947XX
char *c;
#endif
sprom = kzalloc(BCM43xx_SPROM_SIZE * sizeof(u16),
GFP_KERNEL);
if (!sprom) {
printk(KERN_ERR PFX "sprom_extract OOM\n");
return -ENOMEM;
}
#ifdef CONFIG_BCM947XX
sprom[BCM43xx_SPROM_BOARDFLAGS2] = atoi(nvram_get("boardflags2"));
sprom[BCM43xx_SPROM_BOARDFLAGS] = atoi(nvram_get("boardflags"));
if ((c = nvram_get("il0macaddr")) != NULL)
e_aton(c, (char *) &(sprom[BCM43xx_SPROM_IL0MACADDR]));
if ((c = nvram_get("et1macaddr")) != NULL)
e_aton(c, (char *) &(sprom[BCM43xx_SPROM_ET1MACADDR]));
sprom[BCM43xx_SPROM_PA0B0] = atoi(nvram_get("pa0b0"));
sprom[BCM43xx_SPROM_PA0B1] = atoi(nvram_get("pa0b1"));
sprom[BCM43xx_SPROM_PA0B2] = atoi(nvram_get("pa0b2"));
sprom[BCM43xx_SPROM_PA1B0] = atoi(nvram_get("pa1b0"));
sprom[BCM43xx_SPROM_PA1B1] = atoi(nvram_get("pa1b1"));
sprom[BCM43xx_SPROM_PA1B2] = atoi(nvram_get("pa1b2"));
sprom[BCM43xx_SPROM_BOARDREV] = atoi(nvram_get("boardrev"));
#else
bcm43xx_sprom_read(bcm, sprom);
#endif
/* boardflags2 */
value = sprom[BCM43xx_SPROM_BOARDFLAGS2];
bcm->sprom.boardflags2 = value;
/* il0macaddr */
value = sprom[BCM43xx_SPROM_IL0MACADDR + 0];
*(((u16 *)bcm->sprom.il0macaddr) + 0) = cpu_to_be16(value);
value = sprom[BCM43xx_SPROM_IL0MACADDR + 1];
*(((u16 *)bcm->sprom.il0macaddr) + 1) = cpu_to_be16(value);
value = sprom[BCM43xx_SPROM_IL0MACADDR + 2];
*(((u16 *)bcm->sprom.il0macaddr) + 2) = cpu_to_be16(value);
/* et0macaddr */
value = sprom[BCM43xx_SPROM_ET0MACADDR + 0];
*(((u16 *)bcm->sprom.et0macaddr) + 0) = cpu_to_be16(value);
value = sprom[BCM43xx_SPROM_ET0MACADDR + 1];
*(((u16 *)bcm->sprom.et0macaddr) + 1) = cpu_to_be16(value);
value = sprom[BCM43xx_SPROM_ET0MACADDR + 2];
*(((u16 *)bcm->sprom.et0macaddr) + 2) = cpu_to_be16(value);
/* et1macaddr */
value = sprom[BCM43xx_SPROM_ET1MACADDR + 0];
*(((u16 *)bcm->sprom.et1macaddr) + 0) = cpu_to_be16(value);
value = sprom[BCM43xx_SPROM_ET1MACADDR + 1];
*(((u16 *)bcm->sprom.et1macaddr) + 1) = cpu_to_be16(value);
value = sprom[BCM43xx_SPROM_ET1MACADDR + 2];
*(((u16 *)bcm->sprom.et1macaddr) + 2) = cpu_to_be16(value);
/* ethernet phy settings */
value = sprom[BCM43xx_SPROM_ETHPHY];
bcm->sprom.et0phyaddr = (value & 0x001F);
bcm->sprom.et1phyaddr = (value & 0x03E0) >> 5;
bcm->sprom.et0mdcport = (value & (1 << 14)) >> 14;
bcm->sprom.et1mdcport = (value & (1 << 15)) >> 15;
/* boardrev, antennas, locale */
value = sprom[BCM43xx_SPROM_BOARDREV];
bcm->sprom.boardrev = (value & 0x00FF);
bcm->sprom.locale = (value & 0x0F00) >> 8;
bcm->sprom.antennas_aphy = (value & 0x3000) >> 12;
bcm->sprom.antennas_bgphy = (value & 0xC000) >> 14;
if (modparam_locale != -1) {
if (modparam_locale >= 0 && modparam_locale <= 11) {
bcm->sprom.locale = modparam_locale;
printk(KERN_WARNING PFX "Operating with modified "
"LocaleCode %u (%s)\n",
bcm->sprom.locale,
bcm43xx_locale_string(bcm->sprom.locale));
} else {
printk(KERN_WARNING PFX "Module parameter \"locale\" "
"invalid value. (0 - 11)\n");
}
}
/* pa0b* */
value = sprom[BCM43xx_SPROM_PA0B0];
bcm->sprom.pa0b0 = value;
value = sprom[BCM43xx_SPROM_PA0B1];
bcm->sprom.pa0b1 = value;
value = sprom[BCM43xx_SPROM_PA0B2];
bcm->sprom.pa0b2 = value;
/* wl0gpio* */
value = sprom[BCM43xx_SPROM_WL0GPIO0];
if (value == 0x0000)
value = 0xFFFF;
bcm->sprom.wl0gpio0 = value & 0x00FF;
bcm->sprom.wl0gpio1 = (value & 0xFF00) >> 8;
value = sprom[BCM43xx_SPROM_WL0GPIO2];
if (value == 0x0000)
value = 0xFFFF;
bcm->sprom.wl0gpio2 = value & 0x00FF;
bcm->sprom.wl0gpio3 = (value & 0xFF00) >> 8;
/* maxpower */
value = sprom[BCM43xx_SPROM_MAXPWR];
bcm->sprom.maxpower_aphy = (value & 0xFF00) >> 8;
bcm->sprom.maxpower_bgphy = value & 0x00FF;
/* pa1b* */
value = sprom[BCM43xx_SPROM_PA1B0];
bcm->sprom.pa1b0 = value;
value = sprom[BCM43xx_SPROM_PA1B1];
bcm->sprom.pa1b1 = value;
value = sprom[BCM43xx_SPROM_PA1B2];
bcm->sprom.pa1b2 = value;
/* idle tssi target */
value = sprom[BCM43xx_SPROM_IDL_TSSI_TGT];
bcm->sprom.idle_tssi_tgt_aphy = value & 0x00FF;
bcm->sprom.idle_tssi_tgt_bgphy = (value & 0xFF00) >> 8;
/* boardflags */
value = sprom[BCM43xx_SPROM_BOARDFLAGS];
if (value == 0xFFFF)
value = 0x0000;
bcm->sprom.boardflags = value;
/* boardflags workarounds */
if (bcm->board_vendor == PCI_VENDOR_ID_DELL &&
bcm->chip_id == 0x4301 &&
bcm->board_revision == 0x74)
bcm->sprom.boardflags |= BCM43xx_BFL_BTCOEXIST;
if (bcm->board_vendor == PCI_VENDOR_ID_APPLE &&
bcm->board_type == 0x4E &&
bcm->board_revision > 0x40)
bcm->sprom.boardflags |= BCM43xx_BFL_PACTRL;
/* antenna gain */
value = sprom[BCM43xx_SPROM_ANTENNA_GAIN];
if (value == 0x0000 || value == 0xFFFF)
value = 0x0202;
/* convert values to Q5.2 */
bcm->sprom.antennagain_aphy = ((value & 0xFF00) >> 8) * 4;
bcm->sprom.antennagain_bgphy = (value & 0x00FF) * 4;
kfree(sprom);
return 0;
}
static int bcm43xx_geo_init(struct bcm43xx_private *bcm)
{
struct ieee80211_geo *geo;
struct ieee80211_channel *chan;
int have_a = 0, have_bg = 0;
int i;
u8 channel;
struct bcm43xx_phyinfo *phy;
const char *iso_country;
geo = kzalloc(sizeof(*geo), GFP_KERNEL);
if (!geo)
return -ENOMEM;
for (i = 0; i < bcm->nr_80211_available; i++) {
phy = &(bcm->core_80211_ext[i].phy);
switch (phy->type) {
case BCM43xx_PHYTYPE_B:
case BCM43xx_PHYTYPE_G:
have_bg = 1;
break;
case BCM43xx_PHYTYPE_A:
have_a = 1;
break;
default:
assert(0);
}
}
iso_country = bcm43xx_locale_iso(bcm->sprom.locale);
if (have_a) {
for (i = 0, channel = IEEE80211_52GHZ_MIN_CHANNEL;
channel <= IEEE80211_52GHZ_MAX_CHANNEL; channel++) {
chan = &geo->a[i++];
chan->freq = bcm43xx_channel_to_freq_a(channel);
chan->channel = channel;
}
geo->a_channels = i;
}
if (have_bg) {
for (i = 0, channel = IEEE80211_24GHZ_MIN_CHANNEL;
channel <= IEEE80211_24GHZ_MAX_CHANNEL; channel++) {
chan = &geo->bg[i++];
chan->freq = bcm43xx_channel_to_freq_bg(channel);
chan->channel = channel;
}
geo->bg_channels = i;
}
memcpy(geo->name, iso_country, 2);
if (0 /*TODO: Outdoor use only */)
geo->name[2] = 'O';
else if (0 /*TODO: Indoor use only */)
geo->name[2] = 'I';
else
geo->name[2] = ' ';
geo->name[3] = '\0';
ieee80211_set_geo(bcm->ieee, geo);
kfree(geo);
return 0;
}
/* DummyTransmission function, as documented on
* http://bcm-specs.sipsolutions.net/DummyTransmission
*/
void bcm43xx_dummy_transmission(struct bcm43xx_private *bcm)
{
struct bcm43xx_phyinfo *phy = bcm43xx_current_phy(bcm);
struct bcm43xx_radioinfo *radio = bcm43xx_current_radio(bcm);
unsigned int i, max_loop;
u16 value = 0;
u32 buffer[5] = {
0x00000000,
0x0000D400,
0x00000000,
0x00000001,
0x00000000,
};
switch (phy->type) {
case BCM43xx_PHYTYPE_A:
max_loop = 0x1E;
buffer[0] = 0xCC010200;
break;
case BCM43xx_PHYTYPE_B:
case BCM43xx_PHYTYPE_G:
max_loop = 0xFA;
buffer[0] = 0x6E840B00;
break;
default:
assert(0);
return;
}
for (i = 0; i < 5; i++)
bcm43xx_ram_write(bcm, i * 4, buffer[i]);
bcm43xx_read32(bcm, BCM43xx_MMIO_STATUS_BITFIELD); /* dummy read */
bcm43xx_write16(bcm, 0x0568, 0x0000);
bcm43xx_write16(bcm, 0x07C0, 0x0000);
bcm43xx_write16(bcm, 0x050C, ((phy->type == BCM43xx_PHYTYPE_A) ? 1 : 0));
bcm43xx_write16(bcm, 0x0508, 0x0000);
bcm43xx_write16(bcm, 0x050A, 0x0000);
bcm43xx_write16(bcm, 0x054C, 0x0000);
bcm43xx_write16(bcm, 0x056A, 0x0014);
bcm43xx_write16(bcm, 0x0568, 0x0826);
bcm43xx_write16(bcm, 0x0500, 0x0000);
bcm43xx_write16(bcm, 0x0502, 0x0030);
if (radio->version == 0x2050 && radio->revision <= 0x5)
bcm43xx_radio_write16(bcm, 0x0051, 0x0017);
for (i = 0x00; i < max_loop; i++) {
value = bcm43xx_read16(bcm, 0x050E);
if (value & 0x0080)
break;
udelay(10);
}
for (i = 0x00; i < 0x0A; i++) {
value = bcm43xx_read16(bcm, 0x050E);
if (value & 0x0400)
break;
udelay(10);
}
for (i = 0x00; i < 0x0A; i++) {
value = bcm43xx_read16(bcm, 0x0690);
if (!(value & 0x0100))
break;
udelay(10);
}
if (radio->version == 0x2050 && radio->revision <= 0x5)
bcm43xx_radio_write16(bcm, 0x0051, 0x0037);
}
static void key_write(struct bcm43xx_private *bcm,
u8 index, u8 algorithm, const u16 *key)
{
unsigned int i, basic_wep = 0;
u32 offset;
u16 value;
/* Write associated key information */
bcm43xx_shm_write16(bcm, BCM43xx_SHM_SHARED, 0x100 + (index * 2),
((index << 4) | (algorithm & 0x0F)));
/* The first 4 WEP keys need extra love */
if (((algorithm == BCM43xx_SEC_ALGO_WEP) ||
(algorithm == BCM43xx_SEC_ALGO_WEP104)) && (index < 4))
basic_wep = 1;
/* Write key payload, 8 little endian words */
offset = bcm->security_offset + (index * BCM43xx_SEC_KEYSIZE);
for (i = 0; i < (BCM43xx_SEC_KEYSIZE / sizeof(u16)); i++) {
value = cpu_to_le16(key[i]);
bcm43xx_shm_write16(bcm, BCM43xx_SHM_SHARED,
offset + (i * 2), value);
if (!basic_wep)
continue;
bcm43xx_shm_write16(bcm, BCM43xx_SHM_SHARED,
offset + (i * 2) + 4 * BCM43xx_SEC_KEYSIZE,
value);
}
}
static void keymac_write(struct bcm43xx_private *bcm,
u8 index, const u32 *addr)
{
/* for keys 0-3 there is no associated mac address */
if (index < 4)
return;
index -= 4;
if (bcm->current_core->rev >= 5) {
bcm43xx_shm_write32(bcm,
BCM43xx_SHM_HWMAC,
index * 2,
cpu_to_be32(*addr));
bcm43xx_shm_write16(bcm,
BCM43xx_SHM_HWMAC,
(index * 2) + 1,
cpu_to_be16(*((u16 *)(addr + 1))));
} else {
if (index < 8) {
TODO(); /* Put them in the macaddress filter */
} else {
TODO();
/* Put them BCM43xx_SHM_SHARED, stating index 0x0120.
Keep in mind to update the count of keymacs in 0x003E as well! */
}
}
}
static int bcm43xx_key_write(struct bcm43xx_private *bcm,
u8 index, u8 algorithm,
const u8 *_key, int key_len,
const u8 *mac_addr)
{
u8 key[BCM43xx_SEC_KEYSIZE] = { 0 };
if (index >= ARRAY_SIZE(bcm->key))
return -EINVAL;
if (key_len > ARRAY_SIZE(key))
return -EINVAL;
if (algorithm < 1 || algorithm > 5)
return -EINVAL;
memcpy(key, _key, key_len);
key_write(bcm, index, algorithm, (const u16 *)key);
keymac_write(bcm, index, (const u32 *)mac_addr);
bcm->key[index].algorithm = algorithm;
return 0;
}
static void bcm43xx_clear_keys(struct bcm43xx_private *bcm)
{
static const u32 zero_mac[2] = { 0 };
unsigned int i,j, nr_keys = 54;
u16 offset;
if (bcm->current_core->rev < 5)
nr_keys = 16;
assert(nr_keys <= ARRAY_SIZE(bcm->key));
for (i = 0; i < nr_keys; i++) {
bcm->key[i].enabled = 0;
/* returns for i < 4 immediately */
keymac_write(bcm, i, zero_mac);
bcm43xx_shm_write16(bcm, BCM43xx_SHM_SHARED,
0x100 + (i * 2), 0x0000);
for (j = 0; j < 8; j++) {
offset = bcm->security_offset + (j * 4) + (i * BCM43xx_SEC_KEYSIZE);
bcm43xx_shm_write16(bcm, BCM43xx_SHM_SHARED,
offset, 0x0000);
}
}
dprintk(KERN_INFO PFX "Keys cleared\n");
}
/* Lowlevel core-switch function. This is only to be used in
* bcm43xx_switch_core() and bcm43xx_probe_cores()
*/
static int _switch_core(struct bcm43xx_private *bcm, int core)
{
int err;
int attempts = 0;
u32 current_core;
assert(core >= 0);
while (1) {
err = bcm43xx_pci_write_config32(bcm, BCM43xx_PCICFG_ACTIVE_CORE,
(core * 0x1000) + 0x18000000);
if (unlikely(err))
goto error;
err = bcm43xx_pci_read_config32(bcm, BCM43xx_PCICFG_ACTIVE_CORE,
&current_core);
if (unlikely(err))
goto error;
current_core = (current_core - 0x18000000) / 0x1000;
if (current_core == core)
break;
if (unlikely(attempts++ > BCM43xx_SWITCH_CORE_MAX_RETRIES))
goto error;
udelay(10);
}
#ifdef CONFIG_BCM947XX
if (bcm->pci_dev->bus->number == 0)
bcm->current_core_offset = 0x1000 * core;
else
bcm->current_core_offset = 0;
#endif
return 0;
error:
printk(KERN_ERR PFX "Failed to switch to core %d\n", core);
return -ENODEV;
}
int bcm43xx_switch_core(struct bcm43xx_private *bcm, struct bcm43xx_coreinfo *new_core)
{
int err;
if (unlikely(!new_core))
return 0;
if (!new_core->available)
return -ENODEV;
if (bcm->current_core == new_core)
return 0;
err = _switch_core(bcm, new_core->index);
if (unlikely(err))
goto out;
bcm->current_core = new_core;
out:
return err;
}
static int bcm43xx_core_enabled(struct bcm43xx_private *bcm)
{
u32 value;
value = bcm43xx_read32(bcm, BCM43xx_CIR_SBTMSTATELOW);
value &= BCM43xx_SBTMSTATELOW_CLOCK | BCM43xx_SBTMSTATELOW_RESET
| BCM43xx_SBTMSTATELOW_REJECT;
return (value == BCM43xx_SBTMSTATELOW_CLOCK);
}
/* disable current core */
static int bcm43xx_core_disable(struct bcm43xx_private *bcm, u32 core_flags)
{
u32 sbtmstatelow;
u32 sbtmstatehigh;
int i;
/* fetch sbtmstatelow from core information registers */
sbtmstatelow = bcm43xx_read32(bcm, BCM43xx_CIR_SBTMSTATELOW);
/* core is already in reset */
if (sbtmstatelow & BCM43xx_SBTMSTATELOW_RESET)
goto out;
if (sbtmstatelow & BCM43xx_SBTMSTATELOW_CLOCK) {
sbtmstatelow = BCM43xx_SBTMSTATELOW_CLOCK |
BCM43xx_SBTMSTATELOW_REJECT;
bcm43xx_write32(bcm, BCM43xx_CIR_SBTMSTATELOW, sbtmstatelow);
for (i = 0; i < 1000; i++) {
sbtmstatelow = bcm43xx_read32(bcm, BCM43xx_CIR_SBTMSTATELOW);
if (sbtmstatelow & BCM43xx_SBTMSTATELOW_REJECT) {
i = -1;
break;
}
udelay(10);
}
if (i != -1) {
printk(KERN_ERR PFX "Error: core_disable() REJECT timeout!\n");
return -EBUSY;
}
for (i = 0; i < 1000; i++) {
sbtmstatehigh = bcm43xx_read32(bcm, BCM43xx_CIR_SBTMSTATEHIGH);
if (!(sbtmstatehigh & BCM43xx_SBTMSTATEHIGH_BUSY)) {
i = -1;
break;
}
udelay(10);
}
if (i != -1) {
printk(KERN_ERR PFX "Error: core_disable() BUSY timeout!\n");
return -EBUSY;
}
sbtmstatelow = BCM43xx_SBTMSTATELOW_FORCE_GATE_CLOCK |
BCM43xx_SBTMSTATELOW_REJECT |
BCM43xx_SBTMSTATELOW_RESET |
BCM43xx_SBTMSTATELOW_CLOCK |
core_flags;
bcm43xx_write32(bcm, BCM43xx_CIR_SBTMSTATELOW, sbtmstatelow);
udelay(10);
}
sbtmstatelow = BCM43xx_SBTMSTATELOW_RESET |
BCM43xx_SBTMSTATELOW_REJECT |
core_flags;
bcm43xx_write32(bcm, BCM43xx_CIR_SBTMSTATELOW, sbtmstatelow);
out:
bcm->current_core->enabled = 0;
return 0;
}
/* enable (reset) current core */
static int bcm43xx_core_enable(struct bcm43xx_private *bcm, u32 core_flags)
{
u32 sbtmstatelow;
u32 sbtmstatehigh;
u32 sbimstate;
int err;
err = bcm43xx_core_disable(bcm, core_flags);
if (err)
goto out;
sbtmstatelow = BCM43xx_SBTMSTATELOW_CLOCK |
BCM43xx_SBTMSTATELOW_RESET |
BCM43xx_SBTMSTATELOW_FORCE_GATE_CLOCK |
core_flags;
bcm43xx_write32(bcm, BCM43xx_CIR_SBTMSTATELOW, sbtmstatelow);
udelay(1);
sbtmstatehigh = bcm43xx_read32(bcm, BCM43xx_CIR_SBTMSTATEHIGH);
if (sbtmstatehigh & BCM43xx_SBTMSTATEHIGH_SERROR) {
sbtmstatehigh = 0x00000000;
bcm43xx_write32(bcm, BCM43xx_CIR_SBTMSTATEHIGH, sbtmstatehigh);
}
sbimstate = bcm43xx_read32(bcm, BCM43xx_CIR_SBIMSTATE);
if (sbimstate & (BCM43xx_SBIMSTATE_IB_ERROR | BCM43xx_SBIMSTATE_TIMEOUT)) {
sbimstate &= ~(BCM43xx_SBIMSTATE_IB_ERROR | BCM43xx_SBIMSTATE_TIMEOUT);
bcm43xx_write32(bcm, BCM43xx_CIR_SBIMSTATE, sbimstate);
}
sbtmstatelow = BCM43xx_SBTMSTATELOW_CLOCK |
BCM43xx_SBTMSTATELOW_FORCE_GATE_CLOCK |
core_flags;
bcm43xx_write32(bcm, BCM43xx_CIR_SBTMSTATELOW, sbtmstatelow);
udelay(1);
sbtmstatelow = BCM43xx_SBTMSTATELOW_CLOCK | core_flags;
bcm43xx_write32(bcm, BCM43xx_CIR_SBTMSTATELOW, sbtmstatelow);
udelay(1);
bcm->current_core->enabled = 1;
assert(err == 0);
out:
return err;
}
/* http://bcm-specs.sipsolutions.net/80211CoreReset */
void bcm43xx_wireless_core_reset(struct bcm43xx_private *bcm, int connect_phy)
{
u32 flags = 0x00040000;
if ((bcm43xx_core_enabled(bcm)) &&
!bcm43xx_using_pio(bcm)) {
//FIXME: Do we _really_ want #ifndef CONFIG_BCM947XX here?
#if 0
#ifndef CONFIG_BCM947XX
/* reset all used DMA controllers. */
bcm43xx_dmacontroller_tx_reset(bcm, BCM43xx_MMIO_DMA1_BASE);
bcm43xx_dmacontroller_tx_reset(bcm, BCM43xx_MMIO_DMA2_BASE);
bcm43xx_dmacontroller_tx_reset(bcm, BCM43xx_MMIO_DMA3_BASE);
bcm43xx_dmacontroller_tx_reset(bcm, BCM43xx_MMIO_DMA4_BASE);
bcm43xx_dmacontroller_rx_reset(bcm, BCM43xx_MMIO_DMA1_BASE);
if (bcm->current_core->rev < 5)
bcm43xx_dmacontroller_rx_reset(bcm, BCM43xx_MMIO_DMA4_BASE);
#endif
#endif
}
if (bcm43xx_status(bcm) == BCM43xx_STAT_SHUTTINGDOWN) {
bcm43xx_write32(bcm, BCM43xx_MMIO_STATUS_BITFIELD,
bcm43xx_read32(bcm, BCM43xx_MMIO_STATUS_BITFIELD)
& ~(BCM43xx_SBF_MAC_ENABLED | 0x00000002));
} else {
if (connect_phy)
flags |= 0x20000000;
bcm43xx_phy_connect(bcm, connect_phy);
bcm43xx_core_enable(bcm, flags);
bcm43xx_write16(bcm, 0x03E6, 0x0000);
bcm43xx_write32(bcm, BCM43xx_MMIO_STATUS_BITFIELD,
bcm43xx_read32(bcm, BCM43xx_MMIO_STATUS_BITFIELD)
| BCM43xx_SBF_400);
}
}
static void bcm43xx_wireless_core_disable(struct bcm43xx_private *bcm)
{
bcm43xx_radio_turn_off(bcm);
bcm43xx_write16(bcm, 0x03E6, 0x00F4);
bcm43xx_core_disable(bcm, 0);
}
/* Mark the current 80211 core inactive. */
static void bcm43xx_wireless_core_mark_inactive(struct bcm43xx_private *bcm)
{
u32 sbtmstatelow;
bcm43xx_interrupt_disable(bcm, BCM43xx_IRQ_ALL);
bcm43xx_radio_turn_off(bcm);
sbtmstatelow = bcm43xx_read32(bcm, BCM43xx_CIR_SBTMSTATELOW);
sbtmstatelow &= 0xDFF5FFFF;
sbtmstatelow |= 0x000A0000;
bcm43xx_write32(bcm, BCM43xx_CIR_SBTMSTATELOW, sbtmstatelow);
udelay(1);
sbtmstatelow = bcm43xx_read32(bcm, BCM43xx_CIR_SBTMSTATELOW);
sbtmstatelow &= 0xFFF5FFFF;
sbtmstatelow |= 0x00080000;
bcm43xx_write32(bcm, BCM43xx_CIR_SBTMSTATELOW, sbtmstatelow);
udelay(1);
}
static void handle_irq_transmit_status(struct bcm43xx_private *bcm)
{
u32 v0, v1;
u16 tmp;
struct bcm43xx_xmitstatus stat;
while (1) {
v0 = bcm43xx_read32(bcm, BCM43xx_MMIO_XMITSTAT_0);
if (!v0)
break;
v1 = bcm43xx_read32(bcm, BCM43xx_MMIO_XMITSTAT_1);
stat.cookie = (v0 >> 16) & 0x0000FFFF;
tmp = (u16)((v0 & 0xFFF0) | ((v0 & 0xF) >> 1));
stat.flags = tmp & 0xFF;
stat.cnt1 = (tmp & 0x0F00) >> 8;
stat.cnt2 = (tmp & 0xF000) >> 12;
stat.seq = (u16)(v1 & 0xFFFF);
stat.unknown = (u16)((v1 >> 16) & 0xFF);
bcm43xx_debugfs_log_txstat(bcm, &stat);
if (stat.flags & BCM43xx_TXSTAT_FLAG_IGNORE)
continue;
if (!(stat.flags & BCM43xx_TXSTAT_FLAG_ACK)) {
//TODO: packet was not acked (was lost)
}
//TODO: There are more (unknown) flags to test. see bcm43xx_main.h
if (bcm43xx_using_pio(bcm))
bcm43xx_pio_handle_xmitstatus(bcm, &stat);
else
bcm43xx_dma_handle_xmitstatus(bcm, &stat);
}
}
static void bcm43xx_generate_noise_sample(struct bcm43xx_private *bcm)
{
bcm43xx_shm_write16(bcm, BCM43xx_SHM_SHARED, 0x408, 0x7F7F);
bcm43xx_shm_write16(bcm, BCM43xx_SHM_SHARED, 0x40A, 0x7F7F);
bcm43xx_write32(bcm, BCM43xx_MMIO_STATUS2_BITFIELD,
bcm43xx_read32(bcm, BCM43xx_MMIO_STATUS2_BITFIELD) | (1 << 4));
assert(bcm->noisecalc.core_at_start == bcm->current_core);
assert(bcm->noisecalc.channel_at_start == bcm43xx_current_radio(bcm)->channel);
}
static void bcm43xx_calculate_link_quality(struct bcm43xx_private *bcm)
{
/* Top half of Link Quality calculation. */
if (bcm->noisecalc.calculation_running)
return;
bcm->noisecalc.core_at_start = bcm->current_core;
bcm->noisecalc.channel_at_start = bcm43xx_current_radio(bcm)->channel;
bcm->noisecalc.calculation_running = 1;
bcm->noisecalc.nr_samples = 0;
bcm43xx_generate_noise_sample(bcm);
}
static void handle_irq_noise(struct bcm43xx_private *bcm)
{
struct bcm43xx_radioinfo *radio = bcm43xx_current_radio(bcm);
u16 tmp;
u8 noise[4];
u8 i, j;
s32 average;
/* Bottom half of Link Quality calculation. */
assert(bcm->noisecalc.calculation_running);
if (bcm->noisecalc.core_at_start != bcm->current_core ||
bcm->noisecalc.channel_at_start != radio->channel)
goto drop_calculation;
tmp = bcm43xx_shm_read16(bcm, BCM43xx_SHM_SHARED, 0x408);
noise[0] = (tmp & 0x00FF);
noise[1] = (tmp & 0xFF00) >> 8;
tmp = bcm43xx_shm_read16(bcm, BCM43xx_SHM_SHARED, 0x40A);
noise[2] = (tmp & 0x00FF);
noise[3] = (tmp & 0xFF00) >> 8;
if (noise[0] == 0x7F || noise[1] == 0x7F ||
noise[2] == 0x7F || noise[3] == 0x7F)
goto generate_new;
/* Get the noise samples. */
assert(bcm->noisecalc.nr_samples < 8);
i = bcm->noisecalc.nr_samples;
noise[0] = limit_value(noise[0], 0, ARRAY_SIZE(radio->nrssi_lt) - 1);
noise[1] = limit_value(noise[1], 0, ARRAY_SIZE(radio->nrssi_lt) - 1);
noise[2] = limit_value(noise[2], 0, ARRAY_SIZE(radio->nrssi_lt) - 1);
noise[3] = limit_value(noise[3], 0, ARRAY_SIZE(radio->nrssi_lt) - 1);
bcm->noisecalc.samples[i][0] = radio->nrssi_lt[noise[0]];
bcm->noisecalc.samples[i][1] = radio->nrssi_lt[noise[1]];
bcm->noisecalc.samples[i][2] = radio->nrssi_lt[noise[2]];
bcm->noisecalc.samples[i][3] = radio->nrssi_lt[noise[3]];
bcm->noisecalc.nr_samples++;
if (bcm->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 += bcm->noisecalc.samples[i][j];
}
average /= (8 * 4);
average *= 125;
average += 64;
average /= 128;
tmp = bcm43xx_shm_read16(bcm, BCM43xx_SHM_SHARED, 0x40C);
tmp = (tmp / 128) & 0x1F;
if (tmp >= 8)
average += 2;
else
average -= 25;
if (tmp == 8)
average -= 72;
else
average -= 48;
bcm->stats.noise = average;
drop_calculation:
bcm->noisecalc.calculation_running = 0;
return;
}
generate_new:
bcm43xx_generate_noise_sample(bcm);
}
static void handle_irq_ps(struct bcm43xx_private *bcm)
{
if (bcm->ieee->iw_mode == IW_MODE_MASTER) {
///TODO: PS TBTT
} else {
if (1/*FIXME: the last PSpoll frame was sent successfully */)
bcm43xx_power_saving_ctl_bits(bcm, -1, -1);
}
if (bcm->ieee->iw_mode == IW_MODE_ADHOC)
bcm->reg124_set_0x4 = 1;
//FIXME else set to false?
}
static void handle_irq_reg124(struct bcm43xx_private *bcm)
{
if (!bcm->reg124_set_0x4)
return;
bcm43xx_write32(bcm, BCM43xx_MMIO_STATUS2_BITFIELD,
bcm43xx_read32(bcm, BCM43xx_MMIO_STATUS2_BITFIELD)
| 0x4);
//FIXME: reset reg124_set_0x4 to false?
}
static void handle_irq_pmq(struct bcm43xx_private *bcm)
{
u32 tmp;
//TODO: AP mode.
while (1) {
tmp = bcm43xx_read32(bcm, BCM43xx_MMIO_PS_STATUS);
if (!(tmp & 0x00000008))
break;
}
/* 16bit write is odd, but correct. */
bcm43xx_write16(bcm, BCM43xx_MMIO_PS_STATUS, 0x0002);
}
static void bcm43xx_generate_beacon_template(struct bcm43xx_private *bcm,
u16 ram_offset, u16 shm_size_offset)
{
u32 value;
u16 size = 0;
/* Timestamp. */
//FIXME: assumption: The chip sets the timestamp
value = 0;
bcm43xx_ram_write(bcm, ram_offset++, value);
bcm43xx_ram_write(bcm, ram_offset++, value);
size += 8;
/* Beacon Interval / Capability Information */
value = 0x0000;//FIXME: Which interval?
value |= (1 << 0) << 16; /* ESS */
value |= (1 << 2) << 16; /* CF Pollable */ //FIXME?
value |= (1 << 3) << 16; /* CF Poll Request */ //FIXME?
if (!bcm->ieee->open_wep)
value |= (1 << 4) << 16; /* Privacy */
bcm43xx_ram_write(bcm, ram_offset++, value);
size += 4;
/* SSID */
//TODO
/* FH Parameter Set */
//TODO
/* DS Parameter Set */
//TODO
/* CF Parameter Set */
//TODO
/* TIM */
//TODO
bcm43xx_shm_write16(bcm, BCM43xx_SHM_SHARED, shm_size_offset, size);
}
static void handle_irq_beacon(struct bcm43xx_private *bcm)
{
u32 status;
bcm->irq_savedstate &= ~BCM43xx_IRQ_BEACON;
status = bcm43xx_read32(bcm, BCM43xx_MMIO_STATUS2_BITFIELD);
if ((status & 0x1) && (status & 0x2)) {
/* ACK beacon IRQ. */
bcm43xx_write32(bcm, BCM43xx_MMIO_GEN_IRQ_REASON,
BCM43xx_IRQ_BEACON);
bcm->irq_savedstate |= BCM43xx_IRQ_BEACON;
return;
}
if (!(status & 0x1)) {
bcm43xx_generate_beacon_template(bcm, 0x68, 0x18);
status |= 0x1;
bcm43xx_write32(bcm, BCM43xx_MMIO_STATUS2_BITFIELD, status);
}
if (!(status & 0x2)) {
bcm43xx_generate_beacon_template(bcm, 0x468, 0x1A);
status |= 0x2;
bcm43xx_write32(bcm, BCM43xx_MMIO_STATUS2_BITFIELD, status);
}
}
/* Interrupt handler bottom-half */
static void bcm43xx_interrupt_tasklet(struct bcm43xx_private *bcm)
{
u32 reason;
u32 dma_reason[6];
u32 merged_dma_reason = 0;
int i, activity = 0;
unsigned long flags;
#ifdef CONFIG_BCM43XX_DEBUG
u32 _handled = 0x00000000;
# define bcmirq_handled(irq) do { _handled |= (irq); } while (0)
#else
# define bcmirq_handled(irq) do { /* nothing */ } while (0)
#endif /* CONFIG_BCM43XX_DEBUG*/
spin_lock_irqsave(&bcm->irq_lock, flags);
reason = bcm->irq_reason;
for (i = 5; i >= 0; i--) {
dma_reason[i] = bcm->dma_reason[i];
merged_dma_reason |= dma_reason[i];
}
if (unlikely(reason & BCM43xx_IRQ_XMIT_ERROR)) {
/* TX error. We get this when Template Ram is written in wrong endianess
* in dummy_tx(). We also get this if something is wrong with the TX header
* on DMA or PIO queues.
* Maybe we get this in other error conditions, too.
*/
printkl(KERN_ERR PFX "FATAL ERROR: BCM43xx_IRQ_XMIT_ERROR\n");
bcmirq_handled(BCM43xx_IRQ_XMIT_ERROR);
}
if (unlikely(merged_dma_reason & BCM43xx_DMAIRQ_FATALMASK)) {
printkl(KERN_ERR PFX "FATAL ERROR: 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]);
bcm43xx_controller_restart(bcm, "DMA error");
mmiowb();
spin_unlock_irqrestore(&bcm->irq_lock, flags);
return;
}
if (unlikely(merged_dma_reason & BCM43xx_DMAIRQ_NONFATALMASK)) {
printkl(KERN_ERR PFX "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 (reason & BCM43xx_IRQ_PS) {
handle_irq_ps(bcm);
bcmirq_handled(BCM43xx_IRQ_PS);
}
if (reason & BCM43xx_IRQ_REG124) {
handle_irq_reg124(bcm);
bcmirq_handled(BCM43xx_IRQ_REG124);
}
if (reason & BCM43xx_IRQ_BEACON) {
if (bcm->ieee->iw_mode == IW_MODE_MASTER)
handle_irq_beacon(bcm);
bcmirq_handled(BCM43xx_IRQ_BEACON);
}
if (reason & BCM43xx_IRQ_PMQ) {
handle_irq_pmq(bcm);
bcmirq_handled(BCM43xx_IRQ_PMQ);
}
if (reason & BCM43xx_IRQ_SCAN) {
/*TODO*/
//bcmirq_handled(BCM43xx_IRQ_SCAN);
}
if (reason & BCM43xx_IRQ_NOISE) {
handle_irq_noise(bcm);
bcmirq_handled(BCM43xx_IRQ_NOISE);
}
/* Check the DMA reason registers for received data. */
if (dma_reason[0] & BCM43xx_DMAIRQ_RX_DONE) {
if (bcm43xx_using_pio(bcm))
bcm43xx_pio_rx(bcm43xx_current_pio(bcm)->queue0);
else
bcm43xx_dma_rx(bcm43xx_current_dma(bcm)->rx_ring0);
/* We intentionally don't set "activity" to 1, here. */
}
assert(!(dma_reason[1] & BCM43xx_DMAIRQ_RX_DONE));
assert(!(dma_reason[2] & BCM43xx_DMAIRQ_RX_DONE));
if (dma_reason[3] & BCM43xx_DMAIRQ_RX_DONE) {
if (bcm43xx_using_pio(bcm))
bcm43xx_pio_rx(bcm43xx_current_pio(bcm)->queue3);
else
bcm43xx_dma_rx(bcm43xx_current_dma(bcm)->rx_ring3);
activity = 1;
}
assert(!(dma_reason[4] & BCM43xx_DMAIRQ_RX_DONE));
assert(!(dma_reason[5] & BCM43xx_DMAIRQ_RX_DONE));
bcmirq_handled(BCM43xx_IRQ_RX);
if (reason & BCM43xx_IRQ_XMIT_STATUS) {
handle_irq_transmit_status(bcm);
activity = 1;
//TODO: In AP mode, this also causes sending of powersave responses.
bcmirq_handled(BCM43xx_IRQ_XMIT_STATUS);
}
/* IRQ_PIO_WORKAROUND is handled in the top-half. */
bcmirq_handled(BCM43xx_IRQ_PIO_WORKAROUND);
#ifdef CONFIG_BCM43XX_DEBUG
if (unlikely(reason & ~_handled)) {
printkl(KERN_WARNING PFX
"Unhandled IRQ! Reason: 0x%08x, Unhandled: 0x%08x, "
"DMA: 0x%08x, 0x%08x, 0x%08x, 0x%08x\n",
reason, (reason & ~_handled),
dma_reason[0], dma_reason[1],
dma_reason[2], dma_reason[3]);
}
#endif
#undef bcmirq_handled
if (!modparam_noleds)
bcm43xx_leds_update(bcm, activity);
bcm43xx_interrupt_enable(bcm, bcm->irq_savedstate);
mmiowb();
spin_unlock_irqrestore(&bcm->irq_lock, flags);
}
static void pio_irq_workaround(struct bcm43xx_private *bcm,
u16 base, int queueidx)
{
u16 rxctl;
rxctl = bcm43xx_read16(bcm, base + BCM43xx_PIO_RXCTL);
if (rxctl & BCM43xx_PIO_RXCTL_DATAAVAILABLE)
bcm->dma_reason[queueidx] |= BCM43xx_DMAIRQ_RX_DONE;
else
bcm->dma_reason[queueidx] &= ~BCM43xx_DMAIRQ_RX_DONE;
}
static void bcm43xx_interrupt_ack(struct bcm43xx_private *bcm, u32 reason)
{
if (bcm43xx_using_pio(bcm) &&
(bcm->current_core->rev < 3) &&
(!(reason & BCM43xx_IRQ_PIO_WORKAROUND))) {
/* Apply a PIO specific workaround to the dma_reasons */
pio_irq_workaround(bcm, BCM43xx_MMIO_PIO1_BASE, 0);
pio_irq_workaround(bcm, BCM43xx_MMIO_PIO2_BASE, 1);
pio_irq_workaround(bcm, BCM43xx_MMIO_PIO3_BASE, 2);
pio_irq_workaround(bcm, BCM43xx_MMIO_PIO4_BASE, 3);
}
bcm43xx_write32(bcm, BCM43xx_MMIO_GEN_IRQ_REASON, reason);
bcm43xx_write32(bcm, BCM43xx_MMIO_DMA0_REASON,
bcm->dma_reason[0]);
bcm43xx_write32(bcm, BCM43xx_MMIO_DMA1_REASON,
bcm->dma_reason[1]);
bcm43xx_write32(bcm, BCM43xx_MMIO_DMA2_REASON,
bcm->dma_reason[2]);
bcm43xx_write32(bcm, BCM43xx_MMIO_DMA3_REASON,
bcm->dma_reason[3]);
bcm43xx_write32(bcm, BCM43xx_MMIO_DMA4_REASON,
bcm->dma_reason[4]);
bcm43xx_write32(bcm, BCM43xx_MMIO_DMA5_REASON,
bcm->dma_reason[5]);
}
/* Interrupt handler top-half */
static irqreturn_t bcm43xx_interrupt_handler(int irq, void *dev_id)
{
irqreturn_t ret = IRQ_HANDLED;
struct bcm43xx_private *bcm = dev_id;
u32 reason;
if (!bcm)
return IRQ_NONE;
spin_lock(&bcm->irq_lock);
assert(bcm43xx_status(bcm) == BCM43xx_STAT_INITIALIZED);
assert(bcm->current_core->id == BCM43xx_COREID_80211);
reason = bcm43xx_read32(bcm, BCM43xx_MMIO_GEN_IRQ_REASON);
if (reason == 0xffffffff) {
/* irq not for us (shared irq) */
ret = IRQ_NONE;
goto out;
}
reason &= bcm43xx_read32(bcm, BCM43xx_MMIO_GEN_IRQ_MASK);
if (!reason)
goto out;
bcm->dma_reason[0] = bcm43xx_read32(bcm, BCM43xx_MMIO_DMA0_REASON)
& 0x0001DC00;
bcm->dma_reason[1] = bcm43xx_read32(bcm, BCM43xx_MMIO_DMA1_REASON)
& 0x0000DC00;
bcm->dma_reason[2] = bcm43xx_read32(bcm, BCM43xx_MMIO_DMA2_REASON)
& 0x0000DC00;
bcm->dma_reason[3] = bcm43xx_read32(bcm, BCM43xx_MMIO_DMA3_REASON)
& 0x0001DC00;
bcm->dma_reason[4] = bcm43xx_read32(bcm, BCM43xx_MMIO_DMA4_REASON)
& 0x0000DC00;
bcm->dma_reason[5] = bcm43xx_read32(bcm, BCM43xx_MMIO_DMA5_REASON)
& 0x0000DC00;
bcm43xx_interrupt_ack(bcm, reason);
/* disable all IRQs. They are enabled again in the bottom half. */
bcm->irq_savedstate = bcm43xx_interrupt_disable(bcm, BCM43xx_IRQ_ALL);
/* save the reason code and call our bottom half. */
bcm->irq_reason = reason;
tasklet_schedule(&bcm->isr_tasklet);
out:
mmiowb();
spin_unlock(&bcm->irq_lock);
return ret;
}
static void bcm43xx_release_firmware(struct bcm43xx_private *bcm, int force)
{
struct bcm43xx_phyinfo *phy = bcm43xx_current_phy(bcm);
if (bcm->firmware_norelease && !force)
return; /* Suspending or controller reset. */
release_firmware(phy->ucode);
phy->ucode = NULL;
release_firmware(phy->pcm);
phy->pcm = NULL;
release_firmware(phy->initvals0);
phy->initvals0 = NULL;
release_firmware(phy->initvals1);
phy->initvals1 = NULL;
}
static int bcm43xx_request_firmware(struct bcm43xx_private *bcm)
{
struct bcm43xx_phyinfo *phy = bcm43xx_current_phy(bcm);
u8 rev = bcm->current_core->rev;
int err = 0;
int nr;
char buf[22 + sizeof(modparam_fwpostfix) - 1] = { 0 };
if (!phy->ucode) {
snprintf(buf, ARRAY_SIZE(buf), "bcm43xx_microcode%d%s.fw",
(rev >= 5 ? 5 : rev),
modparam_fwpostfix);
err = request_firmware(&phy->ucode, buf, &bcm->pci_dev->dev);
if (err) {
printk(KERN_ERR PFX
"Error: Microcode \"%s\" not available or load failed.\n",
buf);
goto error;
}
}
if (!phy->pcm) {
snprintf(buf, ARRAY_SIZE(buf),
"bcm43xx_pcm%d%s.fw",
(rev < 5 ? 4 : 5),
modparam_fwpostfix);
err = request_firmware(&phy->pcm, buf, &bcm->pci_dev->dev);
if (err) {
printk(KERN_ERR PFX
"Error: PCM \"%s\" not available or load failed.\n",
buf);
goto error;
}
}
if (!phy->initvals0) {
if (rev == 2 || rev == 4) {
switch (phy->type) {
case BCM43xx_PHYTYPE_A:
nr = 3;
break;
case BCM43xx_PHYTYPE_B:
case BCM43xx_PHYTYPE_G:
nr = 1;
break;
default:
goto err_noinitval;
}
} else if (rev >= 5) {
switch (phy->type) {
case BCM43xx_PHYTYPE_A:
nr = 7;
break;
case BCM43xx_PHYTYPE_B:
case BCM43xx_PHYTYPE_G:
nr = 5;
break;
default:
goto err_noinitval;
}
} else
goto err_noinitval;
snprintf(buf, ARRAY_SIZE(buf), "bcm43xx_initval%02d%s.fw",
nr, modparam_fwpostfix);
err = request_firmware(&phy->initvals0, buf, &bcm->pci_dev->dev);
if (err) {
printk(KERN_ERR PFX
"Error: InitVals \"%s\" not available or load failed.\n",
buf);
goto error;
}
if (phy->initvals0->size % sizeof(struct bcm43xx_initval)) {
printk(KERN_ERR PFX "InitVals fileformat error.\n");
goto error;
}
}
if (!phy->initvals1) {
if (rev >= 5) {
u32 sbtmstatehigh;
switch (phy->type) {
case BCM43xx_PHYTYPE_A:
sbtmstatehigh = bcm43xx_read32(bcm, BCM43xx_CIR_SBTMSTATEHIGH);
if (sbtmstatehigh & 0x00010000)
nr = 9;
else
nr = 10;
break;
case BCM43xx_PHYTYPE_B:
case BCM43xx_PHYTYPE_G:
nr = 6;
break;
default:
goto err_noinitval;
}
snprintf(buf, ARRAY_SIZE(buf), "bcm43xx_initval%02d%s.fw",
nr, modparam_fwpostfix);
err = request_firmware(&phy->initvals1, buf, &bcm->pci_dev->dev);
if (err) {
printk(KERN_ERR PFX
"Error: InitVals \"%s\" not available or load failed.\n",
buf);
goto error;
}
if (phy->initvals1->size % sizeof(struct bcm43xx_initval)) {
printk(KERN_ERR PFX "InitVals fileformat error.\n");
goto error;
}
}
}
out:
return err;
error:
bcm43xx_release_firmware(bcm, 1);
goto out;
err_noinitval:
printk(KERN_ERR PFX "Error: No InitVals available!\n");
err = -ENOENT;
goto error;
}
static void bcm43xx_upload_microcode(struct bcm43xx_private *bcm)
{
struct bcm43xx_phyinfo *phy = bcm43xx_current_phy(bcm);
const u32 *data;
unsigned int i, len;
/* Upload Microcode. */
data = (u32 *)(phy->ucode->data);
len = phy->ucode->size / sizeof(u32);
bcm43xx_shm_control_word(bcm, BCM43xx_SHM_UCODE, 0x0000);
for (i = 0; i < len; i++) {
bcm43xx_write32(bcm, BCM43xx_MMIO_SHM_DATA,
be32_to_cpu(data[i]));
udelay(10);
}
/* Upload PCM data. */
data = (u32 *)(phy->pcm->data);
len = phy->pcm->size / sizeof(u32);
bcm43xx_shm_control_word(bcm, BCM43xx_SHM_PCM, 0x01ea);
bcm43xx_write32(bcm, BCM43xx_MMIO_SHM_DATA, 0x00004000);
bcm43xx_shm_control_word(bcm, BCM43xx_SHM_PCM, 0x01eb);
for (i = 0; i < len; i++) {
bcm43xx_write32(bcm, BCM43xx_MMIO_SHM_DATA,
be32_to_cpu(data[i]));
udelay(10);
}
}
static int bcm43xx_write_initvals(struct bcm43xx_private *bcm,
const struct bcm43xx_initval *data,
const unsigned int len)
{
u16 offset, size;
u32 value;
unsigned int i;
for (i = 0; i < len; i++) {
offset = be16_to_cpu(data[i].offset);
size = be16_to_cpu(data[i].size);
value = be32_to_cpu(data[i].value);
if (unlikely(offset >= 0x1000))
goto err_format;
if (size == 2) {
if (unlikely(value & 0xFFFF0000))
goto err_format;
bcm43xx_write16(bcm, offset, (u16)value);
} else if (size == 4) {
bcm43xx_write32(bcm, offset, value);
} else
goto err_format;
}
return 0;
err_format:
printk(KERN_ERR PFX "InitVals (bcm43xx_initvalXX.fw) file-format error. "
"Please fix your bcm43xx firmware files.\n");
return -EPROTO;
}
static int bcm43xx_upload_initvals(struct bcm43xx_private *bcm)
{
struct bcm43xx_phyinfo *phy = bcm43xx_current_phy(bcm);
int err;
err = bcm43xx_write_initvals(bcm, (struct bcm43xx_initval *)phy->initvals0->data,
phy->initvals0->size / sizeof(struct bcm43xx_initval));
if (err)
goto out;
if (phy->initvals1) {
err = bcm43xx_write_initvals(bcm, (struct bcm43xx_initval *)phy->initvals1->data,
phy->initvals1->size / sizeof(struct bcm43xx_initval));
if (err)
goto out;
}
out:
return err;
}
#ifdef CONFIG_BCM947XX
static struct pci_device_id bcm43xx_47xx_ids[] = {
{ PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4324) },
{ 0 }
};
#endif
static int bcm43xx_initialize_irq(struct bcm43xx_private *bcm)
{
int err;
bcm->irq = bcm->pci_dev->irq;
#ifdef CONFIG_BCM947XX
if (bcm->pci_dev->bus->number == 0) {
struct pci_dev *d;
struct pci_device_id *id;
for (id = bcm43xx_47xx_ids; id->vendor; id++) {
d = pci_get_device(id->vendor, id->device, NULL);
if (d != NULL) {
bcm->irq = d->irq;
pci_dev_put(d);
break;
}
}
}
#endif
err = request_irq(bcm->irq, bcm43xx_interrupt_handler,
IRQF_SHARED, KBUILD_MODNAME, bcm);
if (err)
printk(KERN_ERR PFX "Cannot register IRQ%d\n", bcm->irq);
return err;
}
/* Switch to the core used to write the GPIO register.
* This is either the ChipCommon, or the PCI core.
*/
static int switch_to_gpio_core(struct bcm43xx_private *bcm)
{
int err;
/* Where to find the GPIO register depends on the chipset.
* If it has a ChipCommon, its register at offset 0x6c is the GPIO
* control register. Otherwise the register at offset 0x6c in the
* PCI core is the GPIO control register.
*/
err = bcm43xx_switch_core(bcm, &bcm->core_chipcommon);
if (err == -ENODEV) {
err = bcm43xx_switch_core(bcm, &bcm->core_pci);
if (unlikely(err == -ENODEV)) {
printk(KERN_ERR PFX "gpio error: "
"Neither ChipCommon nor PCI core available!\n");
}
}
return err;
}
/* Initialize the GPIOs
* http://bcm-specs.sipsolutions.net/GPIO
*/
static int bcm43xx_gpio_init(struct bcm43xx_private *bcm)
{
struct bcm43xx_coreinfo *old_core;
int err;
u32 mask, set;
bcm43xx_write32(bcm, BCM43xx_MMIO_STATUS_BITFIELD,
bcm43xx_read32(bcm, BCM43xx_MMIO_STATUS_BITFIELD)
& 0xFFFF3FFF);
bcm43xx_leds_switch_all(bcm, 0);
bcm43xx_write16(bcm, BCM43xx_MMIO_GPIO_MASK,
bcm43xx_read16(bcm, BCM43xx_MMIO_GPIO_MASK) | 0x000F);
mask = 0x0000001F;
set = 0x0000000F;
if (bcm->chip_id == 0x4301) {
mask |= 0x0060;
set |= 0x0060;
}
if (0 /* FIXME: conditional unknown */) {
bcm43xx_write16(bcm, BCM43xx_MMIO_GPIO_MASK,
bcm43xx_read16(bcm, BCM43xx_MMIO_GPIO_MASK)
| 0x0100);
mask |= 0x0180;
set |= 0x0180;
}
if (bcm->sprom.boardflags & BCM43xx_BFL_PACTRL) {
bcm43xx_write16(bcm, BCM43xx_MMIO_GPIO_MASK,
bcm43xx_read16(bcm, BCM43xx_MMIO_GPIO_MASK)
| 0x0200);
mask |= 0x0200;
set |= 0x0200;
}
if (bcm->current_core->rev >= 2)
mask |= 0x0010; /* FIXME: This is redundant. */
old_core = bcm->current_core;
err = switch_to_gpio_core(bcm);
if (err)
goto out;
bcm43xx_write32(bcm, BCM43xx_GPIO_CONTROL,
(bcm43xx_read32(bcm, BCM43xx_GPIO_CONTROL) & mask) | set);
err = bcm43xx_switch_core(bcm, old_core);
out:
return err;
}
/* Turn off all GPIO stuff. Call this on module unload, for example. */
static int bcm43xx_gpio_cleanup(struct bcm43xx_private *bcm)
{
struct bcm43xx_coreinfo *old_core;
int err;
old_core = bcm->current_core;
err = switch_to_gpio_core(bcm);
if (err)
return err;
bcm43xx_write32(bcm, BCM43xx_GPIO_CONTROL, 0x00000000);
err = bcm43xx_switch_core(bcm, old_core);
assert(err == 0);
return 0;
}
/* http://bcm-specs.sipsolutions.net/EnableMac */
void bcm43xx_mac_enable(struct bcm43xx_private *bcm)
{
bcm->mac_suspended--;
assert(bcm->mac_suspended >= 0);
if (bcm->mac_suspended == 0) {
bcm43xx_write32(bcm, BCM43xx_MMIO_STATUS_BITFIELD,
bcm43xx_read32(bcm, BCM43xx_MMIO_STATUS_BITFIELD)
| BCM43xx_SBF_MAC_ENABLED);
bcm43xx_write32(bcm, BCM43xx_MMIO_GEN_IRQ_REASON, BCM43xx_IRQ_READY);
bcm43xx_read32(bcm, BCM43xx_MMIO_STATUS_BITFIELD); /* dummy read */
bcm43xx_read32(bcm, BCM43xx_MMIO_GEN_IRQ_REASON); /* dummy read */
bcm43xx_power_saving_ctl_bits(bcm, -1, -1);
}
}
/* http://bcm-specs.sipsolutions.net/SuspendMAC */
void bcm43xx_mac_suspend(struct bcm43xx_private *bcm)
{
int i;
u32 tmp;
assert(bcm->mac_suspended >= 0);
if (bcm->mac_suspended == 0) {
bcm43xx_power_saving_ctl_bits(bcm, -1, 1);
bcm43xx_write32(bcm, BCM43xx_MMIO_STATUS_BITFIELD,
bcm43xx_read32(bcm, BCM43xx_MMIO_STATUS_BITFIELD)
& ~BCM43xx_SBF_MAC_ENABLED);
bcm43xx_read32(bcm, BCM43xx_MMIO_GEN_IRQ_REASON); /* dummy read */
for (i = 10000; i; i--) {
tmp = bcm43xx_read32(bcm, BCM43xx_MMIO_GEN_IRQ_REASON);
if (tmp & BCM43xx_IRQ_READY)
goto out;
udelay(1);
}
printkl(KERN_ERR PFX "MAC suspend failed\n");
}
out:
bcm->mac_suspended++;
}
void bcm43xx_set_iwmode(struct bcm43xx_private *bcm,
int iw_mode)
{
unsigned long flags;
struct net_device *net_dev = bcm->net_dev;
u32 status;
u16 value;
spin_lock_irqsave(&bcm->ieee->lock, flags);
bcm->ieee->iw_mode = iw_mode;
spin_unlock_irqrestore(&bcm->ieee->lock, flags);
if (iw_mode == IW_MODE_MONITOR)
net_dev->type = ARPHRD_IEEE80211;
else
net_dev->type = ARPHRD_ETHER;
status = bcm43xx_read32(bcm, BCM43xx_MMIO_STATUS_BITFIELD);
/* Reset status to infrastructured mode */
status &= ~(BCM43xx_SBF_MODE_AP | BCM43xx_SBF_MODE_MONITOR);
status &= ~BCM43xx_SBF_MODE_PROMISC;
status |= BCM43xx_SBF_MODE_NOTADHOC;
/* FIXME: Always enable promisc mode, until we get the MAC filters working correctly. */
status |= BCM43xx_SBF_MODE_PROMISC;
switch (iw_mode) {
case IW_MODE_MONITOR:
status |= BCM43xx_SBF_MODE_MONITOR;
status |= BCM43xx_SBF_MODE_PROMISC;
break;
case IW_MODE_ADHOC:
status &= ~BCM43xx_SBF_MODE_NOTADHOC;
break;
case IW_MODE_MASTER:
status |= BCM43xx_SBF_MODE_AP;
break;
case IW_MODE_SECOND:
case IW_MODE_REPEAT:
TODO(); /* TODO */
break;
case IW_MODE_INFRA:
/* nothing to be done here... */
break;
default:
dprintk(KERN_ERR PFX "Unknown mode in set_iwmode: %d\n", iw_mode);
}
if (net_dev->flags & IFF_PROMISC)
status |= BCM43xx_SBF_MODE_PROMISC;
bcm43xx_write32(bcm, BCM43xx_MMIO_STATUS_BITFIELD, status);
value = 0x0002;
if (iw_mode != IW_MODE_ADHOC && iw_mode != IW_MODE_MASTER) {
if (bcm->chip_id == 0x4306 && bcm->chip_rev == 3)
value = 0x0064;
else
value = 0x0032;
}
bcm43xx_write16(bcm, 0x0612, value);
}
/* This is the opposite of bcm43xx_chip_init() */
static void bcm43xx_chip_cleanup(struct bcm43xx_private *bcm)
{
bcm43xx_radio_turn_off(bcm);
if (!modparam_noleds)
bcm43xx_leds_exit(bcm);
bcm43xx_gpio_cleanup(bcm);
bcm43xx_release_firmware(bcm, 0);
}
/* Initialize the chip
* http://bcm-specs.sipsolutions.net/ChipInit
*/
static int bcm43xx_chip_init(struct bcm43xx_private *bcm)
{
struct bcm43xx_radioinfo *radio = bcm43xx_current_radio(bcm);
struct bcm43xx_phyinfo *phy = bcm43xx_current_phy(bcm);
int err;
int i, tmp;
u32 value32;
u16 value16;
bcm43xx_write32(bcm, BCM43xx_MMIO_STATUS_BITFIELD,
BCM43xx_SBF_CORE_READY
| BCM43xx_SBF_400);
err = bcm43xx_request_firmware(bcm);
if (err)
goto out;
bcm43xx_upload_microcode(bcm);
bcm43xx_write32(bcm, BCM43xx_MMIO_GEN_IRQ_REASON, 0xFFFFFFFF);
bcm43xx_write32(bcm, BCM43xx_MMIO_STATUS_BITFIELD, 0x00020402);
i = 0;
while (1) {
value32 = bcm43xx_read32(bcm, BCM43xx_MMIO_GEN_IRQ_REASON);
if (value32 == BCM43xx_IRQ_READY)
break;
i++;
if (i >= BCM43xx_IRQWAIT_MAX_RETRIES) {
printk(KERN_ERR PFX "IRQ_READY timeout\n");
err = -ENODEV;
goto err_release_fw;
}
udelay(10);
}
bcm43xx_read32(bcm, BCM43xx_MMIO_GEN_IRQ_REASON); /* dummy read */
value16 = bcm43xx_shm_read16(bcm, BCM43xx_SHM_SHARED,
BCM43xx_UCODE_REVISION);
dprintk(KERN_INFO PFX "Microcode rev 0x%x, pl 0x%x "
"(20%.2i-%.2i-%.2i %.2i:%.2i:%.2i)\n", value16,
bcm43xx_shm_read16(bcm, BCM43xx_SHM_SHARED,
BCM43xx_UCODE_PATCHLEVEL),
(bcm43xx_shm_read16(bcm, BCM43xx_SHM_SHARED,
BCM43xx_UCODE_DATE) >> 12) & 0xf,
(bcm43xx_shm_read16(bcm, BCM43xx_SHM_SHARED,
BCM43xx_UCODE_DATE) >> 8) & 0xf,
bcm43xx_shm_read16(bcm, BCM43xx_SHM_SHARED,
BCM43xx_UCODE_DATE) & 0xff,
(bcm43xx_shm_read16(bcm, BCM43xx_SHM_SHARED,
BCM43xx_UCODE_TIME) >> 11) & 0x1f,
(bcm43xx_shm_read16(bcm, BCM43xx_SHM_SHARED,
BCM43xx_UCODE_TIME) >> 5) & 0x3f,
bcm43xx_shm_read16(bcm, BCM43xx_SHM_SHARED,
BCM43xx_UCODE_TIME) & 0x1f);
if ( value16 > 0x128 ) {
printk(KERN_ERR PFX
"Firmware: no support for microcode extracted "
"from version 4.x binary drivers.\n");
err = -EOPNOTSUPP;
goto err_release_fw;
}
err = bcm43xx_gpio_init(bcm);
if (err)
goto err_release_fw;
err = bcm43xx_upload_initvals(bcm);
if (err)
goto err_gpio_cleanup;
bcm43xx_radio_turn_on(bcm);
bcm43xx_write16(bcm, 0x03E6, 0x0000);
err = bcm43xx_phy_init(bcm);
if (err)
goto err_radio_off;
/* Select initial Interference Mitigation. */
tmp = radio->interfmode;
radio->interfmode = BCM43xx_RADIO_INTERFMODE_NONE;
bcm43xx_radio_set_interference_mitigation(bcm, tmp);
bcm43xx_phy_set_antenna_diversity(bcm);
bcm43xx_radio_set_txantenna(bcm, BCM43xx_RADIO_TXANTENNA_DEFAULT);
if (phy->type == BCM43xx_PHYTYPE_B) {
value16 = bcm43xx_read16(bcm, 0x005E);
value16 |= 0x0004;
bcm43xx_write16(bcm, 0x005E, value16);
}
bcm43xx_write32(bcm, 0x0100, 0x01000000);
if (bcm->current_core->rev < 5)
bcm43xx_write32(bcm, 0x010C, 0x01000000);
value32 = bcm43xx_read32(bcm, BCM43xx_MMIO_STATUS_BITFIELD);
value32 &= ~ BCM43xx_SBF_MODE_NOTADHOC;
bcm43xx_write32(bcm, BCM43xx_MMIO_STATUS_BITFIELD, value32);
value32 = bcm43xx_read32(bcm, BCM43xx_MMIO_STATUS_BITFIELD);
value32 |= BCM43xx_SBF_MODE_NOTADHOC;
bcm43xx_write32(bcm, BCM43xx_MMIO_STATUS_BITFIELD, value32);
value32 = bcm43xx_read32(bcm, BCM43xx_MMIO_STATUS_BITFIELD);
value32 |= 0x100000;
bcm43xx_write32(bcm, BCM43xx_MMIO_STATUS_BITFIELD, value32);
if (bcm43xx_using_pio(bcm)) {
bcm43xx_write32(bcm, 0x0210, 0x00000100);
bcm43xx_write32(bcm, 0x0230, 0x00000100);
bcm43xx_write32(bcm, 0x0250, 0x00000100);
bcm43xx_write32(bcm, 0x0270, 0x00000100);
bcm43xx_shm_write16(bcm, BCM43xx_SHM_SHARED, 0x0034, 0x0000);
}
/* Probe Response Timeout value */
/* FIXME: Default to 0, has to be set by ioctl probably... :-/ */
bcm43xx_shm_write16(bcm, BCM43xx_SHM_SHARED, 0x0074, 0x0000);
/* Initially set the wireless operation mode. */
bcm43xx_set_iwmode(bcm, bcm->ieee->iw_mode);
if (bcm->current_core->rev < 3) {
bcm43xx_write16(bcm, 0x060E, 0x0000);
bcm43xx_write16(bcm, 0x0610, 0x8000);
bcm43xx_write16(bcm, 0x0604, 0x0000);
bcm43xx_write16(bcm, 0x0606, 0x0200);
} else {
bcm43xx_write32(bcm, 0x0188, 0x80000000);
bcm43xx_write32(bcm, 0x018C, 0x02000000);
}
bcm43xx_write32(bcm, BCM43xx_MMIO_GEN_IRQ_REASON, 0x00004000);
bcm43xx_write32(bcm, BCM43xx_MMIO_DMA0_IRQ_MASK, 0x0001DC00);
bcm43xx_write32(bcm, BCM43xx_MMIO_DMA1_IRQ_MASK, 0x0000DC00);
bcm43xx_write32(bcm, BCM43xx_MMIO_DMA2_IRQ_MASK, 0x0000DC00);
bcm43xx_write32(bcm, BCM43xx_MMIO_DMA3_IRQ_MASK, 0x0001DC00);
bcm43xx_write32(bcm, BCM43xx_MMIO_DMA4_IRQ_MASK, 0x0000DC00);
bcm43xx_write32(bcm, BCM43xx_MMIO_DMA5_IRQ_MASK, 0x0000DC00);
value32 = bcm43xx_read32(bcm, BCM43xx_CIR_SBTMSTATELOW);
value32 |= 0x00100000;
bcm43xx_write32(bcm, BCM43xx_CIR_SBTMSTATELOW, value32);
bcm43xx_write16(bcm, BCM43xx_MMIO_POWERUP_DELAY, bcm43xx_pctl_powerup_delay(bcm));
assert(err == 0);
dprintk(KERN_INFO PFX "Chip initialized\n");
out:
return err;
err_radio_off:
bcm43xx_radio_turn_off(bcm);
err_gpio_cleanup:
bcm43xx_gpio_cleanup(bcm);
err_release_fw:
bcm43xx_release_firmware(bcm, 1);
goto out;
}
/* Validate chip access
* http://bcm-specs.sipsolutions.net/ValidateChipAccess */
static int bcm43xx_validate_chip(struct bcm43xx_private *bcm)
{
u32 value;
u32 shm_backup;
shm_backup = bcm43xx_shm_read32(bcm, BCM43xx_SHM_SHARED, 0x0000);
bcm43xx_shm_write32(bcm, BCM43xx_SHM_SHARED, 0x0000, 0xAA5555AA);
if (bcm43xx_shm_read32(bcm, BCM43xx_SHM_SHARED, 0x0000) != 0xAA5555AA)
goto error;
bcm43xx_shm_write32(bcm, BCM43xx_SHM_SHARED, 0x0000, 0x55AAAA55);
if (bcm43xx_shm_read32(bcm, BCM43xx_SHM_SHARED, 0x0000) != 0x55AAAA55)
goto error;
bcm43xx_shm_write32(bcm, BCM43xx_SHM_SHARED, 0x0000, shm_backup);
value = bcm43xx_read32(bcm, BCM43xx_MMIO_STATUS_BITFIELD);
if ((value | 0x80000000) != 0x80000400)
goto error;
value = bcm43xx_read32(bcm, BCM43xx_MMIO_GEN_IRQ_REASON);
if (value != 0x00000000)
goto error;
return 0;
error:
printk(KERN_ERR PFX "Failed to validate the chipaccess\n");
return -ENODEV;
}
static void bcm43xx_init_struct_phyinfo(struct bcm43xx_phyinfo *phy)
{
/* Initialize a "phyinfo" structure. The structure is already
* zeroed out.
* This is called on insmod time to initialize members.
*/
phy->savedpctlreg = 0xFFFF;
spin_lock_init(&phy->lock);
}
static void bcm43xx_init_struct_radioinfo(struct bcm43xx_radioinfo *radio)
{
/* Initialize a "radioinfo" structure. The structure is already
* zeroed out.
* This is called on insmod time to initialize members.
*/
radio->interfmode = BCM43xx_RADIO_INTERFMODE_NONE;
radio->channel = 0xFF;
radio->initial_channel = 0xFF;
}
static int bcm43xx_probe_cores(struct bcm43xx_private *bcm)
{
int err, i;
int current_core;
u32 core_vendor, core_id, core_rev;
u32 sb_id_hi, chip_id_32 = 0;
u16 pci_device, chip_id_16;
u8 core_count;
memset(&bcm->core_chipcommon, 0, sizeof(struct bcm43xx_coreinfo));
memset(&bcm->core_pci, 0, sizeof(struct bcm43xx_coreinfo));
memset(&bcm->core_80211, 0, sizeof(struct bcm43xx_coreinfo)
* BCM43xx_MAX_80211_CORES);
memset(&bcm->core_80211_ext, 0, sizeof(struct bcm43xx_coreinfo_80211)
* BCM43xx_MAX_80211_CORES);
bcm->nr_80211_available = 0;
bcm->current_core = NULL;
bcm->active_80211_core = NULL;
/* map core 0 */
err = _switch_core(bcm, 0);
if (err)
goto out;
/* fetch sb_id_hi from core information registers */
sb_id_hi = bcm43xx_read32(bcm, BCM43xx_CIR_SB_ID_HI);
core_id = (sb_id_hi & 0xFFF0) >> 4;
core_rev = (sb_id_hi & 0xF);
core_vendor = (sb_id_hi & 0xFFFF0000) >> 16;
/* if present, chipcommon is always core 0; read the chipid from it */
if (core_id == BCM43xx_COREID_CHIPCOMMON) {
chip_id_32 = bcm43xx_read32(bcm, 0);
chip_id_16 = chip_id_32 & 0xFFFF;
bcm->core_chipcommon.available = 1;
bcm->core_chipcommon.id = core_id;
bcm->core_chipcommon.rev = core_rev;
bcm->core_chipcommon.index = 0;
/* While we are at it, also read the capabilities. */
bcm->chipcommon_capabilities = bcm43xx_read32(bcm, BCM43xx_CHIPCOMMON_CAPABILITIES);
} else {
/* without a chipCommon, use a hard coded table. */
pci_device = bcm->pci_dev->device;
if (pci_device == 0x4301)
chip_id_16 = 0x4301;
else if ((pci_device >= 0x4305) && (pci_device <= 0x4307))
chip_id_16 = 0x4307;
else if ((pci_device >= 0x4402) && (pci_device <= 0x4403))
chip_id_16 = 0x4402;
else if ((pci_device >= 0x4610) && (pci_device <= 0x4615))
chip_id_16 = 0x4610;
else if ((pci_device >= 0x4710) && (pci_device <= 0x4715))
chip_id_16 = 0x4710;
#ifdef CONFIG_BCM947XX
else if ((pci_device >= 0x4320) && (pci_device <= 0x4325))
chip_id_16 = 0x4309;
#endif
else {
printk(KERN_ERR PFX "Could not determine Chip ID\n");
return -ENODEV;
}
}
/* ChipCommon with Core Rev >=4 encodes number of cores,
* otherwise consult hardcoded table */
if ((core_id == BCM43xx_COREID_CHIPCOMMON) && (core_rev >= 4)) {
core_count = (chip_id_32 & 0x0F000000) >> 24;
} else {
switch (chip_id_16) {
case 0x4610:
case 0x4704:
case 0x4710:
core_count = 9;
break;
case 0x4310:
core_count = 8;
break;
case 0x5365:
core_count = 7;
break;
case 0x4306:
core_count = 6;
break;
case 0x4301:
case 0x4307:
core_count = 5;
break;
case 0x4402:
core_count = 3;
break;
default:
/* SOL if we get here */
assert(0);
core_count = 1;
}
}
bcm->chip_id = chip_id_16;
bcm->chip_rev = (chip_id_32 & 0x000F0000) >> 16;
bcm->chip_package = (chip_id_32 & 0x00F00000) >> 20;
dprintk(KERN_INFO PFX "Chip ID 0x%x, rev 0x%x\n",
bcm->chip_id, bcm->chip_rev);
dprintk(KERN_INFO PFX "Number of cores: %d\n", core_count);
if (bcm->core_chipcommon.available) {
dprintk(KERN_INFO PFX "Core 0: ID 0x%x, rev 0x%x, vendor 0x%x, %s\n",
core_id, core_rev, core_vendor,
bcm43xx_core_enabled(bcm) ? "enabled" : "disabled");
}
if (bcm->core_chipcommon.available)
current_core = 1;
else
current_core = 0;
for ( ; current_core < core_count; current_core++) {
struct bcm43xx_coreinfo *core;
struct bcm43xx_coreinfo_80211 *ext_80211;
err = _switch_core(bcm, current_core);
if (err)
goto out;
/* Gather information */
/* fetch sb_id_hi from core information registers */
sb_id_hi = bcm43xx_read32(bcm, BCM43xx_CIR_SB_ID_HI);
/* extract core_id, core_rev, core_vendor */
core_id = (sb_id_hi & 0xFFF0) >> 4;
core_rev = (sb_id_hi & 0xF);
core_vendor = (sb_id_hi & 0xFFFF0000) >> 16;
dprintk(KERN_INFO PFX "Core %d: ID 0x%x, rev 0x%x, vendor 0x%x, %s\n",
current_core, core_id, core_rev, core_vendor,
bcm43xx_core_enabled(bcm) ? "enabled" : "disabled" );
core = NULL;
switch (core_id) {
case BCM43xx_COREID_PCI:
core = &bcm->core_pci;
if (core->available) {
printk(KERN_WARNING PFX "Multiple PCI cores found.\n");
continue;
}
break;
case BCM43xx_COREID_80211:
for (i = 0; i < BCM43xx_MAX_80211_CORES; i++) {
core = &(bcm->core_80211[i]);
ext_80211 = &(bcm->core_80211_ext[i]);
if (!core->available)
break;
core = NULL;
}
if (!core) {
printk(KERN_WARNING PFX "More than %d cores of type 802.11 found.\n",
BCM43xx_MAX_80211_CORES);
continue;
}
if (i != 0) {
/* More than one 80211 core is only supported
* by special chips.
* There are chips with two 80211 cores, but with
* dangling pins on the second core. Be careful
* and ignore these cores here.
*/
if (bcm->pci_dev->device != 0x4324) {
dprintk(KERN_INFO PFX "Ignoring additional 802.11 core.\n");
continue;
}
}
switch (core_rev) {
case 2:
case 4:
case 5:
case 6:
case 7:
case 9:
break;
default:
printk(KERN_ERR PFX "Error: Unsupported 80211 core revision %u\n",
core_rev);
err = -ENODEV;
goto out;
}
bcm->nr_80211_available++;
core->priv = ext_80211;
bcm43xx_init_struct_phyinfo(&ext_80211->phy);
bcm43xx_init_struct_radioinfo(&ext_80211->radio);
break;
case BCM43xx_COREID_CHIPCOMMON:
printk(KERN_WARNING PFX "Multiple CHIPCOMMON cores found.\n");
break;
}
if (core) {
core->available = 1;
core->id = core_id;
core->rev = core_rev;
core->index = current_core;
}
}
if (!bcm->core_80211[0].available) {
printk(KERN_ERR PFX "Error: No 80211 core found!\n");
err = -ENODEV;
goto out;
}
err = bcm43xx_switch_core(bcm, &bcm->core_80211[0]);
assert(err == 0);
out:
return err;
}
static void bcm43xx_gen_bssid(struct bcm43xx_private *bcm)
{
const u8 *mac = (const u8*)(bcm->net_dev->dev_addr);
u8 *bssid = bcm->ieee->bssid;
switch (bcm->ieee->iw_mode) {
case IW_MODE_ADHOC:
random_ether_addr(bssid);
break;
case IW_MODE_MASTER:
case IW_MODE_INFRA:
case IW_MODE_REPEAT:
case IW_MODE_SECOND:
case IW_MODE_MONITOR:
memcpy(bssid, mac, ETH_ALEN);
break;
default:
assert(0);
}
}
static void bcm43xx_rate_memory_write(struct bcm43xx_private *bcm,
u16 rate,
int is_ofdm)
{
u16 offset;
if (is_ofdm) {
offset = 0x480;
offset += (bcm43xx_plcp_get_ratecode_ofdm(rate) & 0x000F) * 2;
}
else {
offset = 0x4C0;
offset += (bcm43xx_plcp_get_ratecode_cck(rate) & 0x000F) * 2;
}
bcm43xx_shm_write16(bcm, BCM43xx_SHM_SHARED, offset + 0x20,
bcm43xx_shm_read16(bcm, BCM43xx_SHM_SHARED, offset));
}
static void bcm43xx_rate_memory_init(struct bcm43xx_private *bcm)
{
switch (bcm43xx_current_phy(bcm)->type) {
case BCM43xx_PHYTYPE_A:
case BCM43xx_PHYTYPE_G:
bcm43xx_rate_memory_write(bcm, IEEE80211_OFDM_RATE_6MB, 1);
bcm43xx_rate_memory_write(bcm, IEEE80211_OFDM_RATE_12MB, 1);
bcm43xx_rate_memory_write(bcm, IEEE80211_OFDM_RATE_18MB, 1);
bcm43xx_rate_memory_write(bcm, IEEE80211_OFDM_RATE_24MB, 1);
bcm43xx_rate_memory_write(bcm, IEEE80211_OFDM_RATE_36MB, 1);
bcm43xx_rate_memory_write(bcm, IEEE80211_OFDM_RATE_48MB, 1);
bcm43xx_rate_memory_write(bcm, IEEE80211_OFDM_RATE_54MB, 1);
case BCM43xx_PHYTYPE_B:
bcm43xx_rate_memory_write(bcm, IEEE80211_CCK_RATE_1MB, 0);
bcm43xx_rate_memory_write(bcm, IEEE80211_CCK_RATE_2MB, 0);
bcm43xx_rate_memory_write(bcm, IEEE80211_CCK_RATE_5MB, 0);
bcm43xx_rate_memory_write(bcm, IEEE80211_CCK_RATE_11MB, 0);
break;
default:
assert(0);
}
}
static void bcm43xx_wireless_core_cleanup(struct bcm43xx_private *bcm)
{
bcm43xx_chip_cleanup(bcm);
bcm43xx_pio_free(bcm);
bcm43xx_dma_free(bcm);
bcm->current_core->initialized = 0;
}
/* http://bcm-specs.sipsolutions.net/80211Init */
static int bcm43xx_wireless_core_init(struct bcm43xx_private *bcm,
int active_wlcore)
{
struct bcm43xx_phyinfo *phy = bcm43xx_current_phy(bcm);
struct bcm43xx_radioinfo *radio = bcm43xx_current_radio(bcm);
u32 ucodeflags;
int err;
u32 sbimconfiglow;
u8 limit;
if (bcm->chip_rev < 5) {
sbimconfiglow = bcm43xx_read32(bcm, BCM43xx_CIR_SBIMCONFIGLOW);
sbimconfiglow &= ~ BCM43xx_SBIMCONFIGLOW_REQUEST_TOUT_MASK;
sbimconfiglow &= ~ BCM43xx_SBIMCONFIGLOW_SERVICE_TOUT_MASK;
if (bcm->bustype == BCM43xx_BUSTYPE_PCI)
sbimconfiglow |= 0x32;
else if (bcm->bustype == BCM43xx_BUSTYPE_SB)
sbimconfiglow |= 0x53;
else
assert(0);
bcm43xx_write32(bcm, BCM43xx_CIR_SBIMCONFIGLOW, sbimconfiglow);
}
bcm43xx_phy_calibrate(bcm);
err = bcm43xx_chip_init(bcm);
if (err)
goto out;
bcm43xx_shm_write16(bcm, BCM43xx_SHM_SHARED, 0x0016, bcm->current_core->rev);
ucodeflags = bcm43xx_shm_read32(bcm, BCM43xx_SHM_SHARED, BCM43xx_UCODEFLAGS_OFFSET);
if (0 /*FIXME: which condition has to be used here? */)
ucodeflags |= 0x00000010;
/* HW decryption needs to be set now */
ucodeflags |= 0x40000000;
if (phy->type == BCM43xx_PHYTYPE_G) {
ucodeflags |= BCM43xx_UCODEFLAG_UNKBGPHY;
if (phy->rev == 1)
ucodeflags |= BCM43xx_UCODEFLAG_UNKGPHY;
if (bcm->sprom.boardflags & BCM43xx_BFL_PACTRL)
ucodeflags |= BCM43xx_UCODEFLAG_UNKPACTRL;
} else if (phy->type == BCM43xx_PHYTYPE_B) {
ucodeflags |= BCM43xx_UCODEFLAG_UNKBGPHY;
if (phy->rev >= 2 && radio->version == 0x2050)
ucodeflags &= ~BCM43xx_UCODEFLAG_UNKGPHY;
}
if (ucodeflags != bcm43xx_shm_read32(bcm, BCM43xx_SHM_SHARED,
BCM43xx_UCODEFLAGS_OFFSET)) {
bcm43xx_shm_write32(bcm, BCM43xx_SHM_SHARED,
BCM43xx_UCODEFLAGS_OFFSET, ucodeflags);
}
/* Short/Long Retry Limit.
* The retry-limit is a 4-bit counter. Enforce this to avoid overflowing
* the chip-internal counter.
*/
limit = limit_value(modparam_short_retry, 0, 0xF);
bcm43xx_shm_write32(bcm, BCM43xx_SHM_WIRELESS, 0x0006, limit);
limit = limit_value(modparam_long_retry, 0, 0xF);
bcm43xx_shm_write32(bcm, BCM43xx_SHM_WIRELESS, 0x0007, limit);
bcm43xx_shm_write16(bcm, BCM43xx_SHM_SHARED, 0x0044, 3);
bcm43xx_shm_write16(bcm, BCM43xx_SHM_SHARED, 0x0046, 2);
bcm43xx_rate_memory_init(bcm);
/* Minimum Contention Window */
if (phy->type == BCM43xx_PHYTYPE_B)
bcm43xx_shm_write32(bcm, BCM43xx_SHM_WIRELESS, 0x0003, 0x0000001f);
else
bcm43xx_shm_write32(bcm, BCM43xx_SHM_WIRELESS, 0x0003, 0x0000000f);
/* Maximum Contention Window */
bcm43xx_shm_write32(bcm, BCM43xx_SHM_WIRELESS, 0x0004, 0x000003ff);
bcm43xx_gen_bssid(bcm);
bcm43xx_write_mac_bssid_templates(bcm);
if (bcm->current_core->rev >= 5)
bcm43xx_write16(bcm, 0x043C, 0x000C);
if (active_wlcore) {
if (bcm43xx_using_pio(bcm)) {
err = bcm43xx_pio_init(bcm);
} else {
err = bcm43xx_dma_init(bcm);
if (err == -ENOSYS)
err = bcm43xx_pio_init(bcm);
}
if (err)
goto err_chip_cleanup;
}
bcm43xx_write16(bcm, 0x0612, 0x0050);
bcm43xx_shm_write16(bcm, BCM43xx_SHM_SHARED, 0x0416, 0x0050);
bcm43xx_shm_write16(bcm, BCM43xx_SHM_SHARED, 0x0414, 0x01F4);
if (active_wlcore) {
if (radio->initial_channel != 0xFF)
bcm43xx_radio_selectchannel(bcm, radio->initial_channel, 0);
}
/* Don't enable MAC/IRQ here, as it will race with the IRQ handler.
* We enable it later.
*/
bcm->current_core->initialized = 1;
out:
return err;
err_chip_cleanup:
bcm43xx_chip_cleanup(bcm);
goto out;
}
static int bcm43xx_chipset_attach(struct bcm43xx_private *bcm)
{
int err;
u16 pci_status;
err = bcm43xx_pctl_set_crystal(bcm, 1);
if (err)
goto out;
bcm43xx_pci_read_config16(bcm, PCI_STATUS, &pci_status);
bcm43xx_pci_write_config16(bcm, PCI_STATUS, pci_status & ~PCI_STATUS_SIG_TARGET_ABORT);
out:
return err;
}
static void bcm43xx_chipset_detach(struct bcm43xx_private *bcm)
{
bcm43xx_pctl_set_clock(bcm, BCM43xx_PCTL_CLK_SLOW);
bcm43xx_pctl_set_crystal(bcm, 0);
}
static void bcm43xx_pcicore_broadcast_value(struct bcm43xx_private *bcm,
u32 address,
u32 data)
{
bcm43xx_write32(bcm, BCM43xx_PCICORE_BCAST_ADDR, address);
bcm43xx_write32(bcm, BCM43xx_PCICORE_BCAST_DATA, data);
}
static int bcm43xx_pcicore_commit_settings(struct bcm43xx_private *bcm)
{
int err;
struct bcm43xx_coreinfo *old_core;
old_core = bcm->current_core;
err = bcm43xx_switch_core(bcm, &bcm->core_pci);
if (err)
goto out;
bcm43xx_pcicore_broadcast_value(bcm, 0xfd8, 0x00000000);
bcm43xx_switch_core(bcm, old_core);
assert(err == 0);
out:
return err;
}
/* Make an I/O Core usable. "core_mask" is the bitmask of the cores to enable.
* To enable core 0, pass a core_mask of 1<<0
*/
static int bcm43xx_setup_backplane_pci_connection(struct bcm43xx_private *bcm,
u32 core_mask)
{
u32 backplane_flag_nr;
u32 value;
struct bcm43xx_coreinfo *old_core;
int err = 0;
value = bcm43xx_read32(bcm, BCM43xx_CIR_SBTPSFLAG);
backplane_flag_nr = value & BCM43xx_BACKPLANE_FLAG_NR_MASK;
old_core = bcm->current_core;
err = bcm43xx_switch_core(bcm, &bcm->core_pci);
if (err)
goto out;
if (bcm->core_pci.rev < 6) {
value = bcm43xx_read32(bcm, BCM43xx_CIR_SBINTVEC);
value |= (1 << backplane_flag_nr);
bcm43xx_write32(bcm, BCM43xx_CIR_SBINTVEC, value);
} else {
err = bcm43xx_pci_read_config32(bcm, BCM43xx_PCICFG_ICR, &value);
if (err) {
printk(KERN_ERR PFX "Error: ICR setup failure!\n");
goto out_switch_back;
}
value |= core_mask << 8;
err = bcm43xx_pci_write_config32(bcm, BCM43xx_PCICFG_ICR, value);
if (err) {
printk(KERN_ERR PFX "Error: ICR setup failure!\n");
goto out_switch_back;
}
}
value = bcm43xx_read32(bcm, BCM43xx_PCICORE_SBTOPCI2);
value |= BCM43xx_SBTOPCI2_PREFETCH | BCM43xx_SBTOPCI2_BURST;
bcm43xx_write32(bcm, BCM43xx_PCICORE_SBTOPCI2, value);
if (bcm->core_pci.rev < 5) {
value = bcm43xx_read32(bcm, BCM43xx_CIR_SBIMCONFIGLOW);
value |= (2 << BCM43xx_SBIMCONFIGLOW_SERVICE_TOUT_SHIFT)
& BCM43xx_SBIMCONFIGLOW_SERVICE_TOUT_MASK;
value |= (3 << BCM43xx_SBIMCONFIGLOW_REQUEST_TOUT_SHIFT)
& BCM43xx_SBIMCONFIGLOW_REQUEST_TOUT_MASK;
bcm43xx_write32(bcm, BCM43xx_CIR_SBIMCONFIGLOW, value);
err = bcm43xx_pcicore_commit_settings(bcm);
assert(err == 0);
}
out_switch_back:
err = bcm43xx_switch_core(bcm, old_core);
out:
return err;
}
static void bcm43xx_periodic_every120sec(struct bcm43xx_private *bcm)
{
struct bcm43xx_phyinfo *phy = bcm43xx_current_phy(bcm);
if (phy->type != BCM43xx_PHYTYPE_G || phy->rev < 2)
return;
bcm43xx_mac_suspend(bcm);
bcm43xx_phy_lo_g_measure(bcm);
bcm43xx_mac_enable(bcm);
}
static void bcm43xx_periodic_every60sec(struct bcm43xx_private *bcm)
{
bcm43xx_phy_lo_mark_all_unused(bcm);
if (bcm->sprom.boardflags & BCM43xx_BFL_RSSI) {
bcm43xx_mac_suspend(bcm);
bcm43xx_calc_nrssi_slope(bcm);
bcm43xx_mac_enable(bcm);
}
}
static void bcm43xx_periodic_every30sec(struct bcm43xx_private *bcm)
{
/* Update device statistics. */
bcm43xx_calculate_link_quality(bcm);
}
static void bcm43xx_periodic_every15sec(struct bcm43xx_private *bcm)
{
struct bcm43xx_phyinfo *phy = bcm43xx_current_phy(bcm);
struct bcm43xx_radioinfo *radio = bcm43xx_current_radio(bcm);
if (phy->type == BCM43xx_PHYTYPE_G) {
//TODO: update_aci_moving_average
if (radio->aci_enable && radio->aci_wlan_automatic) {
bcm43xx_mac_suspend(bcm);
if (!radio->aci_enable && 1 /*TODO: not scanning? */) {
if (0 /*TODO: bunch of conditions*/) {
bcm43xx_radio_set_interference_mitigation(bcm,
BCM43xx_RADIO_INTERFMODE_MANUALWLAN);
}
} else if (1/*TODO*/) {
/*
if ((aci_average > 1000) && !(bcm43xx_radio_aci_scan(bcm))) {
bcm43xx_radio_set_interference_mitigation(bcm,
BCM43xx_RADIO_INTERFMODE_NONE);
}
*/
}
bcm43xx_mac_enable(bcm);
} else if (radio->interfmode == BCM43xx_RADIO_INTERFMODE_NONWLAN &&
phy->rev == 1) {
//TODO: implement rev1 workaround
}
}
bcm43xx_phy_xmitpower(bcm); //FIXME: unless scanning?
//TODO for APHY (temperature?)
}
static void do_periodic_work(struct bcm43xx_private *bcm)
{
unsigned int state;
state = bcm->periodic_state;
if (state % 8 == 0)
bcm43xx_periodic_every120sec(bcm);
if (state % 4 == 0)
bcm43xx_periodic_every60sec(bcm);
if (state % 2 == 0)
bcm43xx_periodic_every30sec(bcm);
if (state % 1 == 0)
bcm43xx_periodic_every15sec(bcm);
bcm->periodic_state = state + 1;
schedule_delayed_work(&bcm->periodic_work, HZ * 15);
}
/* Estimate a "Badness" value based on the periodic work
* state-machine state. "Badness" is worse (bigger), if the
* periodic work will take longer.
*/
static int estimate_periodic_work_badness(unsigned int state)
{
int badness = 0;
if (state % 8 == 0) /* every 120 sec */
badness += 10;
if (state % 4 == 0) /* every 60 sec */
badness += 5;
if (state % 2 == 0) /* every 30 sec */
badness += 1;
if (state % 1 == 0) /* every 15 sec */
badness += 1;
#define BADNESS_LIMIT 4
return badness;
}
static void bcm43xx_periodic_work_handler(void *d)
{
struct bcm43xx_private *bcm = d;
struct net_device *net_dev = bcm->net_dev;
unsigned long flags;
u32 savedirqs = 0;
int badness;
unsigned long orig_trans_start = 0;
mutex_lock(&bcm->mutex);
badness = estimate_periodic_work_badness(bcm->periodic_state);
if (badness > BADNESS_LIMIT) {
/* Periodic work will take a long time, so we want it to
* be preemtible.
*/
netif_tx_lock_bh(net_dev);
/* We must fake a started transmission here, as we are going to
* disable TX. If we wouldn't fake a TX, it would be possible to
* trigger the netdev watchdog, if the last real TX is already
* some time on the past (slightly less than 5secs)
*/
orig_trans_start = net_dev->trans_start;
net_dev->trans_start = jiffies;
netif_stop_queue(net_dev);
netif_tx_unlock_bh(net_dev);
spin_lock_irqsave(&bcm->irq_lock, flags);
bcm43xx_mac_suspend(bcm);
if (bcm43xx_using_pio(bcm))
bcm43xx_pio_freeze_txqueues(bcm);
savedirqs = bcm43xx_interrupt_disable(bcm, BCM43xx_IRQ_ALL);
spin_unlock_irqrestore(&bcm->irq_lock, flags);
bcm43xx_synchronize_irq(bcm);
} else {
/* Periodic work should take short time, so we want low
* locking overhead.
*/
spin_lock_irqsave(&bcm->irq_lock, flags);
}
do_periodic_work(bcm);
if (badness > BADNESS_LIMIT) {
spin_lock_irqsave(&bcm->irq_lock, flags);
tasklet_enable(&bcm->isr_tasklet);
bcm43xx_interrupt_enable(bcm, savedirqs);
if (bcm43xx_using_pio(bcm))
bcm43xx_pio_thaw_txqueues(bcm);
bcm43xx_mac_enable(bcm);
netif_wake_queue(bcm->net_dev);
net_dev->trans_start = orig_trans_start;
}
mmiowb();
spin_unlock_irqrestore(&bcm->irq_lock, flags);
mutex_unlock(&bcm->mutex);
}
void bcm43xx_periodic_tasks_delete(struct bcm43xx_private *bcm)
{
cancel_rearming_delayed_work(&bcm->periodic_work);
}
void bcm43xx_periodic_tasks_setup(struct bcm43xx_private *bcm)
{
struct work_struct *work = &(bcm->periodic_work);
assert(bcm43xx_status(bcm) == BCM43xx_STAT_INITIALIZED);
INIT_WORK(work, bcm43xx_periodic_work_handler, bcm);
schedule_work(work);
}
static void bcm43xx_security_init(struct bcm43xx_private *bcm)
{
bcm->security_offset = bcm43xx_shm_read16(bcm, BCM43xx_SHM_SHARED,
0x0056) * 2;
bcm43xx_clear_keys(bcm);
}
static int bcm43xx_rng_read(struct hwrng *rng, u32 *data)
{
struct bcm43xx_private *bcm = (struct bcm43xx_private *)rng->priv;
unsigned long flags;
spin_lock_irqsave(&(bcm)->irq_lock, flags);
*data = bcm43xx_read16(bcm, BCM43xx_MMIO_RNG);
spin_unlock_irqrestore(&(bcm)->irq_lock, flags);
return (sizeof(u16));
}
static void bcm43xx_rng_exit(struct bcm43xx_private *bcm)
{
hwrng_unregister(&bcm->rng);
}
static int bcm43xx_rng_init(struct bcm43xx_private *bcm)
{
int err;
snprintf(bcm->rng_name, ARRAY_SIZE(bcm->rng_name),
"%s_%s", KBUILD_MODNAME, bcm->net_dev->name);
bcm->rng.name = bcm->rng_name;
bcm->rng.data_read = bcm43xx_rng_read;
bcm->rng.priv = (unsigned long)bcm;
err = hwrng_register(&bcm->rng);
if (err)
printk(KERN_ERR PFX "RNG init failed (%d)\n", err);
return err;
}
static int bcm43xx_shutdown_all_wireless_cores(struct bcm43xx_private *bcm)
{
int ret = 0;
int i, err;
struct bcm43xx_coreinfo *core;
bcm43xx_set_status(bcm, BCM43xx_STAT_SHUTTINGDOWN);
for (i = 0; i < bcm->nr_80211_available; i++) {
core = &(bcm->core_80211[i]);
assert(core->available);
if (!core->initialized)
continue;
err = bcm43xx_switch_core(bcm, core);
if (err) {
dprintk(KERN_ERR PFX "shutdown_all_wireless_cores "
"switch_core failed (%d)\n", err);
ret = err;
continue;
}
bcm43xx_interrupt_disable(bcm, BCM43xx_IRQ_ALL);
bcm43xx_read32(bcm, BCM43xx_MMIO_GEN_IRQ_REASON); /* dummy read */
bcm43xx_wireless_core_cleanup(bcm);
if (core == bcm->active_80211_core)
bcm->active_80211_core = NULL;
}
free_irq(bcm->irq, bcm);
bcm43xx_set_status(bcm, BCM43xx_STAT_UNINIT);
return ret;
}
/* This is the opposite of bcm43xx_init_board() */
static void bcm43xx_free_board(struct bcm43xx_private *bcm)
{
bcm43xx_rng_exit(bcm);
bcm43xx_sysfs_unregister(bcm);
bcm43xx_periodic_tasks_delete(bcm);
mutex_lock(&(bcm)->mutex);
bcm43xx_shutdown_all_wireless_cores(bcm);
bcm43xx_pctl_set_crystal(bcm, 0);
mutex_unlock(&(bcm)->mutex);
}
static void prepare_phydata_for_init(struct bcm43xx_phyinfo *phy)
{
phy->antenna_diversity = 0xFFFF;
memset(phy->minlowsig, 0xFF, sizeof(phy->minlowsig));
memset(phy->minlowsigpos, 0, sizeof(phy->minlowsigpos));
/* Flags */
phy->calibrated = 0;
phy->is_locked = 0;
if (phy->_lo_pairs) {
memset(phy->_lo_pairs, 0,
sizeof(struct bcm43xx_lopair) * BCM43xx_LO_COUNT);
}
memset(phy->loopback_gain, 0, sizeof(phy->loopback_gain));
}
static void prepare_radiodata_for_init(struct bcm43xx_private *bcm,
struct bcm43xx_radioinfo *radio)
{
int i;
/* Set default attenuation values. */
radio->baseband_atten = bcm43xx_default_baseband_attenuation(bcm);
radio->radio_atten = bcm43xx_default_radio_attenuation(bcm);
radio->txctl1 = bcm43xx_default_txctl1(bcm);
radio->txctl2 = 0xFFFF;
radio->txpwr_offset = 0;
/* NRSSI */
radio->nrssislope = 0;
for (i = 0; i < ARRAY_SIZE(radio->nrssi); i++)
radio->nrssi[i] = -1000;
for (i = 0; i < ARRAY_SIZE(radio->nrssi_lt); i++)
radio->nrssi_lt[i] = i;
radio->lofcal = 0xFFFF;
radio->initval = 0xFFFF;
radio->aci_enable = 0;
radio->aci_wlan_automatic = 0;
radio->aci_hw_rssi = 0;
}
static void prepare_priv_for_init(struct bcm43xx_private *bcm)
{
int i;
struct bcm43xx_coreinfo *core;
struct bcm43xx_coreinfo_80211 *wlext;
assert(!bcm->active_80211_core);
bcm43xx_set_status(bcm, BCM43xx_STAT_INITIALIZING);
/* Flags */
bcm->was_initialized = 0;
bcm->reg124_set_0x4 = 0;
/* Stats */
memset(&bcm->stats, 0, sizeof(bcm->stats));
/* Wireless core data */
for (i = 0; i < BCM43xx_MAX_80211_CORES; i++) {
core = &(bcm->core_80211[i]);
wlext = core->priv;
if (!core->available)
continue;
assert(wlext == &(bcm->core_80211_ext[i]));
prepare_phydata_for_init(&wlext->phy);
prepare_radiodata_for_init(bcm, &wlext->radio);
}
/* IRQ related flags */
bcm->irq_reason = 0;
memset(bcm->dma_reason, 0, sizeof(bcm->dma_reason));
bcm->irq_savedstate = BCM43xx_IRQ_INITIAL;
bcm->mac_suspended = 1;
/* Noise calculation context */
memset(&bcm->noisecalc, 0, sizeof(bcm->noisecalc));
/* Periodic work context */
bcm->periodic_state = 0;
}
static int wireless_core_up(struct bcm43xx_private *bcm,
int active_wlcore)
{
int err;
if (!bcm43xx_core_enabled(bcm))
bcm43xx_wireless_core_reset(bcm, 1);
if (!active_wlcore)
bcm43xx_wireless_core_mark_inactive(bcm);
err = bcm43xx_wireless_core_init(bcm, active_wlcore);
if (err)
goto out;
if (!active_wlcore)
bcm43xx_radio_turn_off(bcm);
out:
return err;
}
/* Select and enable the "to be used" wireless core.
* Locking: bcm->mutex must be aquired before calling this.
* bcm->irq_lock must not be aquired.
*/
int bcm43xx_select_wireless_core(struct bcm43xx_private *bcm,
int phytype)
{
int i, err;
struct bcm43xx_coreinfo *active_core = NULL;
struct bcm43xx_coreinfo_80211 *active_wlext = NULL;
struct bcm43xx_coreinfo *core;
struct bcm43xx_coreinfo_80211 *wlext;
int adjust_active_sbtmstatelow = 0;
might_sleep();
if (phytype < 0) {
/* If no phytype is requested, select the first core. */
assert(bcm->core_80211[0].available);
wlext = bcm->core_80211[0].priv;
phytype = wlext->phy.type;
}
/* Find the requested core. */
for (i = 0; i < bcm->nr_80211_available; i++) {
core = &(bcm->core_80211[i]);
wlext = core->priv;
if (wlext->phy.type == phytype) {
active_core = core;
active_wlext = wlext;
break;
}
}
if (!active_core)
return -ESRCH; /* No such PHYTYPE on this board. */
if (bcm->active_80211_core) {
/* We already selected a wl core in the past.
* So first clean up everything.
*/
dprintk(KERN_INFO PFX "select_wireless_core: cleanup\n");
ieee80211softmac_stop(bcm->net_dev);
bcm43xx_set_status(bcm, BCM43xx_STAT_INITIALIZED);
err = bcm43xx_disable_interrupts_sync(bcm);
assert(!err);
tasklet_enable(&bcm->isr_tasklet);
err = bcm43xx_shutdown_all_wireless_cores(bcm);
if (err)
goto error;
/* Ok, everything down, continue to re-initialize. */
bcm43xx_set_status(bcm, BCM43xx_STAT_INITIALIZING);
}
/* Reset all data structures. */
prepare_priv_for_init(bcm);
err = bcm43xx_pctl_set_clock(bcm, BCM43xx_PCTL_CLK_FAST);
if (err)
goto error;
/* Mark all unused cores "inactive". */
for (i = 0; i < bcm->nr_80211_available; i++) {
core = &(bcm->core_80211[i]);
wlext = core->priv;
if (core == active_core)
continue;
err = bcm43xx_switch_core(bcm, core);
if (err) {
dprintk(KERN_ERR PFX "Could not switch to inactive "
"802.11 core (%d)\n", err);
goto error;
}
err = wireless_core_up(bcm, 0);
if (err) {
dprintk(KERN_ERR PFX "core_up for inactive 802.11 core "
"failed (%d)\n", err);
goto error;
}
adjust_active_sbtmstatelow = 1;
}
/* Now initialize the active 802.11 core. */
err = bcm43xx_switch_core(bcm, active_core);
if (err) {
dprintk(KERN_ERR PFX "Could not switch to active "
"802.11 core (%d)\n", err);
goto error;
}
if (adjust_active_sbtmstatelow &&
active_wlext->phy.type == BCM43xx_PHYTYPE_G) {
u32 sbtmstatelow;
sbtmstatelow = bcm43xx_read32(bcm, BCM43xx_CIR_SBTMSTATELOW);
sbtmstatelow |= 0x20000000;
bcm43xx_write32(bcm, BCM43xx_CIR_SBTMSTATELOW, sbtmstatelow);
}
err = wireless_core_up(bcm, 1);
if (err) {
dprintk(KERN_ERR PFX "core_up for active 802.11 core "
"failed (%d)\n", err);
goto error;
}
err = bcm43xx_pctl_set_clock(bcm, BCM43xx_PCTL_CLK_DYNAMIC);
if (err)
goto error;
bcm->active_80211_core = active_core;
bcm43xx_macfilter_clear(bcm, BCM43xx_MACFILTER_ASSOC);
bcm43xx_macfilter_set(bcm, BCM43xx_MACFILTER_SELF, (u8 *)(bcm->net_dev->dev_addr));
bcm43xx_security_init(bcm);
ieee80211softmac_start(bcm->net_dev);
/* Let's go! Be careful after enabling the IRQs.
* Don't switch cores, for example.
*/
bcm43xx_mac_enable(bcm);
bcm43xx_set_status(bcm, BCM43xx_STAT_INITIALIZED);
err = bcm43xx_initialize_irq(bcm);
if (err)
goto error;
bcm43xx_interrupt_enable(bcm, bcm->irq_savedstate);
dprintk(KERN_INFO PFX "Selected 802.11 core (phytype %d)\n",
active_wlext->phy.type);
return 0;
error:
bcm43xx_set_status(bcm, BCM43xx_STAT_UNINIT);
bcm43xx_pctl_set_clock(bcm, BCM43xx_PCTL_CLK_SLOW);
return err;
}
static int bcm43xx_init_board(struct bcm43xx_private *bcm)
{
int err;
mutex_lock(&(bcm)->mutex);
tasklet_enable(&bcm->isr_tasklet);
err = bcm43xx_pctl_set_crystal(bcm, 1);
if (err)
goto err_tasklet;
err = bcm43xx_pctl_init(bcm);
if (err)
goto err_crystal_off;
err = bcm43xx_select_wireless_core(bcm, -1);
if (err)
goto err_crystal_off;
err = bcm43xx_sysfs_register(bcm);
if (err)
goto err_wlshutdown;
err = bcm43xx_rng_init(bcm);
if (err)
goto err_sysfs_unreg;
bcm43xx_periodic_tasks_setup(bcm);
/*FIXME: This should be handled by softmac instead. */
schedule_work(&bcm->softmac->associnfo.work);
out:
mutex_unlock(&(bcm)->mutex);
return err;
err_sysfs_unreg:
bcm43xx_sysfs_unregister(bcm);
err_wlshutdown:
bcm43xx_shutdown_all_wireless_cores(bcm);
err_crystal_off:
bcm43xx_pctl_set_crystal(bcm, 0);
err_tasklet:
tasklet_disable(&bcm->isr_tasklet);
goto out;
}
static void bcm43xx_detach_board(struct bcm43xx_private *bcm)
{
struct pci_dev *pci_dev = bcm->pci_dev;
int i;
bcm43xx_chipset_detach(bcm);
/* Do _not_ access the chip, after it is detached. */
pci_iounmap(pci_dev, bcm->mmio_addr);
pci_release_regions(pci_dev);
pci_disable_device(pci_dev);
/* Free allocated structures/fields */
for (i = 0; i < BCM43xx_MAX_80211_CORES; i++) {
kfree(bcm->core_80211_ext[i].phy._lo_pairs);
if (bcm->core_80211_ext[i].phy.dyn_tssi_tbl)
kfree(bcm->core_80211_ext[i].phy.tssi2dbm);
}
}
static int bcm43xx_read_phyinfo(struct bcm43xx_private *bcm)
{
struct bcm43xx_phyinfo *phy = bcm43xx_current_phy(bcm);
u16 value;
u8 phy_version;
u8 phy_type;
u8 phy_rev;
int phy_rev_ok = 1;
void *p;
value = bcm43xx_read16(bcm, BCM43xx_MMIO_PHY_VER);
phy_version = (value & 0xF000) >> 12;
phy_type = (value & 0x0F00) >> 8;
phy_rev = (value & 0x000F);
dprintk(KERN_INFO PFX "Detected PHY: Version: %x, Type %x, Revision %x\n",
phy_version, phy_type, phy_rev);
switch (phy_type) {
case BCM43xx_PHYTYPE_A:
if (phy_rev >= 4)
phy_rev_ok = 0;
/*FIXME: We need to switch the ieee->modulation, etc.. flags,
* if we switch 80211 cores after init is done.
* As we do not implement on the fly switching between
* wireless cores, I will leave this as a future task.
*/
bcm->ieee->modulation = IEEE80211_OFDM_MODULATION;
bcm->ieee->mode = IEEE_A;
bcm->ieee->freq_band = IEEE80211_52GHZ_BAND |
IEEE80211_24GHZ_BAND;
break;
case BCM43xx_PHYTYPE_B:
if (phy_rev != 2 && phy_rev != 4 && phy_rev != 6 && phy_rev != 7)
phy_rev_ok = 0;
bcm->ieee->modulation = IEEE80211_CCK_MODULATION;
bcm->ieee->mode = IEEE_B;
bcm->ieee->freq_band = IEEE80211_24GHZ_BAND;
break;
case BCM43xx_PHYTYPE_G:
if (phy_rev > 7)
phy_rev_ok = 0;
bcm->ieee->modulation = IEEE80211_OFDM_MODULATION |
IEEE80211_CCK_MODULATION;
bcm->ieee->mode = IEEE_G;
bcm->ieee->freq_band = IEEE80211_24GHZ_BAND;
break;
default:
printk(KERN_ERR PFX "Error: Unknown PHY Type %x\n",
phy_type);
return -ENODEV;
};
if (!phy_rev_ok) {
printk(KERN_WARNING PFX "Invalid PHY Revision %x\n",
phy_rev);
}
phy->version = phy_version;
phy->type = phy_type;
phy->rev = phy_rev;
if ((phy_type == BCM43xx_PHYTYPE_B) || (phy_type == BCM43xx_PHYTYPE_G)) {
p = kzalloc(sizeof(struct bcm43xx_lopair) * BCM43xx_LO_COUNT,
GFP_KERNEL);
if (!p)
return -ENOMEM;
phy->_lo_pairs = p;
}
return 0;
}
static int bcm43xx_attach_board(struct bcm43xx_private *bcm)
{
struct pci_dev *pci_dev = bcm->pci_dev;
struct net_device *net_dev = bcm->net_dev;
int err;
int i;
u32 coremask;
err = pci_enable_device(pci_dev);
if (err) {
printk(KERN_ERR PFX "pci_enable_device() failed\n");
goto out;
}
err = pci_request_regions(pci_dev, KBUILD_MODNAME);
if (err) {
printk(KERN_ERR PFX "pci_request_regions() failed\n");
goto err_pci_disable;
}
/* enable PCI bus-mastering */
pci_set_master(pci_dev);
bcm->mmio_addr = pci_iomap(pci_dev, 0, ~0UL);
if (!bcm->mmio_addr) {
printk(KERN_ERR PFX "pci_iomap() failed\n");
err = -EIO;
goto err_pci_release;
}
net_dev->base_addr = (unsigned long)bcm->mmio_addr;
bcm43xx_pci_read_config16(bcm, PCI_SUBSYSTEM_VENDOR_ID,
&bcm->board_vendor);
bcm43xx_pci_read_config16(bcm, PCI_SUBSYSTEM_ID,
&bcm->board_type);
bcm43xx_pci_read_config16(bcm, PCI_REVISION_ID,
&bcm->board_revision);
err = bcm43xx_chipset_attach(bcm);
if (err)
goto err_iounmap;
err = bcm43xx_pctl_init(bcm);
if (err)
goto err_chipset_detach;
err = bcm43xx_probe_cores(bcm);
if (err)
goto err_chipset_detach;
/* Attach all IO cores to the backplane. */
coremask = 0;
for (i = 0; i < bcm->nr_80211_available; i++)
coremask |= (1 << bcm->core_80211[i].index);
//FIXME: Also attach some non80211 cores?
err = bcm43xx_setup_backplane_pci_connection(bcm, coremask);
if (err) {
printk(KERN_ERR PFX "Backplane->PCI connection failed!\n");
goto err_chipset_detach;
}
err = bcm43xx_sprom_extract(bcm);
if (err)
goto err_chipset_detach;
err = bcm43xx_leds_init(bcm);
if (err)
goto err_chipset_detach;
for (i = 0; i < bcm->nr_80211_available; i++) {
err = bcm43xx_switch_core(bcm, &bcm->core_80211[i]);
assert(err != -ENODEV);
if (err)
goto err_80211_unwind;
/* Enable the selected wireless core.
* Connect PHY only on the first core.
*/
bcm43xx_wireless_core_reset(bcm, (i == 0));
err = bcm43xx_read_phyinfo(bcm);
if (err && (i == 0))
goto err_80211_unwind;
err = bcm43xx_read_radioinfo(bcm);
if (err && (i == 0))
goto err_80211_unwind;
err = bcm43xx_validate_chip(bcm);
if (err && (i == 0))
goto err_80211_unwind;
bcm43xx_radio_turn_off(bcm);
err = bcm43xx_phy_init_tssi2dbm_table(bcm);
if (err)
goto err_80211_unwind;
bcm43xx_wireless_core_disable(bcm);
}
err = bcm43xx_geo_init(bcm);
if (err)
goto err_80211_unwind;
bcm43xx_pctl_set_crystal(bcm, 0);
/* Set the MAC address in the networking subsystem */
if (is_valid_ether_addr(bcm->sprom.et1macaddr))
memcpy(bcm->net_dev->dev_addr, bcm->sprom.et1macaddr, 6);
else
memcpy(bcm->net_dev->dev_addr, bcm->sprom.il0macaddr, 6);
snprintf(bcm->nick, IW_ESSID_MAX_SIZE,
"Broadcom %04X", bcm->chip_id);
assert(err == 0);
out:
return err;
err_80211_unwind:
for (i = 0; i < BCM43xx_MAX_80211_CORES; i++) {
kfree(bcm->core_80211_ext[i].phy._lo_pairs);
if (bcm->core_80211_ext[i].phy.dyn_tssi_tbl)
kfree(bcm->core_80211_ext[i].phy.tssi2dbm);
}
err_chipset_detach:
bcm43xx_chipset_detach(bcm);
err_iounmap:
pci_iounmap(pci_dev, bcm->mmio_addr);
err_pci_release:
pci_release_regions(pci_dev);
err_pci_disable:
pci_disable_device(pci_dev);
goto out;
}
/* Do the Hardware IO operations to send the txb */
static inline int bcm43xx_tx(struct bcm43xx_private *bcm,
struct ieee80211_txb *txb)
{
int err = -ENODEV;
if (bcm43xx_using_pio(bcm))
err = bcm43xx_pio_tx(bcm, txb);
else
err = bcm43xx_dma_tx(bcm, txb);
bcm->net_dev->trans_start = jiffies;
return err;
}
static void bcm43xx_ieee80211_set_chan(struct net_device *net_dev,
u8 channel)
{
struct bcm43xx_private *bcm = bcm43xx_priv(net_dev);
struct bcm43xx_radioinfo *radio;
unsigned long flags;
mutex_lock(&bcm->mutex);
spin_lock_irqsave(&bcm->irq_lock, flags);
if (bcm43xx_status(bcm) == BCM43xx_STAT_INITIALIZED) {
bcm43xx_mac_suspend(bcm);
bcm43xx_radio_selectchannel(bcm, channel, 0);
bcm43xx_mac_enable(bcm);
} else {
radio = bcm43xx_current_radio(bcm);
radio->initial_channel = channel;
}
spin_unlock_irqrestore(&bcm->irq_lock, flags);
mutex_unlock(&bcm->mutex);
}
/* set_security() callback in struct ieee80211_device */
static void bcm43xx_ieee80211_set_security(struct net_device *net_dev,
struct ieee80211_security *sec)
{
struct bcm43xx_private *bcm = bcm43xx_priv(net_dev);
struct ieee80211_security *secinfo = &bcm->ieee->sec;
unsigned long flags;
int keyidx;
dprintk(KERN_INFO PFX "set security called");
mutex_lock(&bcm->mutex);
spin_lock_irqsave(&bcm->irq_lock, flags);
for (keyidx = 0; keyidx<WEP_KEYS; keyidx++)
if (sec->flags & (1<<keyidx)) {
secinfo->encode_alg[keyidx] = sec->encode_alg[keyidx];
secinfo->key_sizes[keyidx] = sec->key_sizes[keyidx];
memcpy(secinfo->keys[keyidx], sec->keys[keyidx], SCM_KEY_LEN);
}
if (sec->flags & SEC_ACTIVE_KEY) {
secinfo->active_key = sec->active_key;
dprintk(", .active_key = %d", sec->active_key);
}
if (sec->flags & SEC_UNICAST_GROUP) {
secinfo->unicast_uses_group = sec->unicast_uses_group;
dprintk(", .unicast_uses_group = %d", sec->unicast_uses_group);
}
if (sec->flags & SEC_LEVEL) {
secinfo->level = sec->level;
dprintk(", .level = %d", sec->level);
}
if (sec->flags & SEC_ENABLED) {
secinfo->enabled = sec->enabled;
dprintk(", .enabled = %d", sec->enabled);
}
if (sec->flags & SEC_ENCRYPT) {
secinfo->encrypt = sec->encrypt;
dprintk(", .encrypt = %d", sec->encrypt);
}
if (sec->flags & SEC_AUTH_MODE) {
secinfo->auth_mode = sec->auth_mode;
dprintk(", .auth_mode = %d", sec->auth_mode);
}
dprintk("\n");
if (bcm43xx_status(bcm) == BCM43xx_STAT_INITIALIZED &&
!bcm->ieee->host_encrypt) {
if (secinfo->enabled) {
/* upload WEP keys to hardware */
char null_address[6] = { 0 };
u8 algorithm = 0;
for (keyidx = 0; keyidx<WEP_KEYS; keyidx++) {
if (!(sec->flags & (1<<keyidx)))
continue;
switch (sec->encode_alg[keyidx]) {
case SEC_ALG_NONE: algorithm = BCM43xx_SEC_ALGO_NONE; break;
case SEC_ALG_WEP:
algorithm = BCM43xx_SEC_ALGO_WEP;
if (secinfo->key_sizes[keyidx] == 13)
algorithm = BCM43xx_SEC_ALGO_WEP104;
break;
case SEC_ALG_TKIP:
FIXME();
algorithm = BCM43xx_SEC_ALGO_TKIP;
break;
case SEC_ALG_CCMP:
FIXME();
algorithm = BCM43xx_SEC_ALGO_AES;
break;
default:
assert(0);
break;
}
bcm43xx_key_write(bcm, keyidx, algorithm, sec->keys[keyidx], secinfo->key_sizes[keyidx], &null_address[0]);
bcm->key[keyidx].enabled = 1;
bcm->key[keyidx].algorithm = algorithm;
}
} else
bcm43xx_clear_keys(bcm);
}
spin_unlock_irqrestore(&bcm->irq_lock, flags);
mutex_unlock(&bcm->mutex);
}
/* hard_start_xmit() callback in struct ieee80211_device */
static int bcm43xx_ieee80211_hard_start_xmit(struct ieee80211_txb *txb,
struct net_device *net_dev,
int pri)
{
struct bcm43xx_private *bcm = bcm43xx_priv(net_dev);
int err = -ENODEV;
unsigned long flags;
spin_lock_irqsave(&bcm->irq_lock, flags);
if (likely(bcm43xx_status(bcm) == BCM43xx_STAT_INITIALIZED))
err = bcm43xx_tx(bcm, txb);
spin_unlock_irqrestore(&bcm->irq_lock, flags);
if (unlikely(err))
return NETDEV_TX_BUSY;
return NETDEV_TX_OK;
}
static struct net_device_stats * bcm43xx_net_get_stats(struct net_device *net_dev)
{
return &(bcm43xx_priv(net_dev)->ieee->stats);
}
static void bcm43xx_net_tx_timeout(struct net_device *net_dev)
{
struct bcm43xx_private *bcm = bcm43xx_priv(net_dev);
unsigned long flags;
spin_lock_irqsave(&bcm->irq_lock, flags);
bcm43xx_controller_restart(bcm, "TX timeout");
spin_unlock_irqrestore(&bcm->irq_lock, flags);
}
#ifdef CONFIG_NET_POLL_CONTROLLER
static void bcm43xx_net_poll_controller(struct net_device *net_dev)
{
struct bcm43xx_private *bcm = bcm43xx_priv(net_dev);
unsigned long flags;
local_irq_save(flags);
if (bcm43xx_status(bcm) == BCM43xx_STAT_INITIALIZED)
bcm43xx_interrupt_handler(bcm->irq, bcm);
local_irq_restore(flags);
}
#endif /* CONFIG_NET_POLL_CONTROLLER */
static int bcm43xx_net_open(struct net_device *net_dev)
{
struct bcm43xx_private *bcm = bcm43xx_priv(net_dev);
return bcm43xx_init_board(bcm);
}
static int bcm43xx_net_stop(struct net_device *net_dev)
{
struct bcm43xx_private *bcm = bcm43xx_priv(net_dev);
int err;
ieee80211softmac_stop(net_dev);
err = bcm43xx_disable_interrupts_sync(bcm);
assert(!err);
bcm43xx_free_board(bcm);
flush_scheduled_work();
return 0;
}
static int bcm43xx_init_private(struct bcm43xx_private *bcm,
struct net_device *net_dev,
struct pci_dev *pci_dev)
{
bcm43xx_set_status(bcm, BCM43xx_STAT_UNINIT);
bcm->ieee = netdev_priv(net_dev);
bcm->softmac = ieee80211_priv(net_dev);
bcm->softmac->set_channel = bcm43xx_ieee80211_set_chan;
bcm->irq_savedstate = BCM43xx_IRQ_INITIAL;
bcm->mac_suspended = 1;
bcm->pci_dev = pci_dev;
bcm->net_dev = net_dev;
bcm->bad_frames_preempt = modparam_bad_frames_preempt;
spin_lock_init(&bcm->irq_lock);
spin_lock_init(&bcm->leds_lock);
mutex_init(&bcm->mutex);
tasklet_init(&bcm->isr_tasklet,
(void (*)(unsigned long))bcm43xx_interrupt_tasklet,
(unsigned long)bcm);
tasklet_disable_nosync(&bcm->isr_tasklet);
if (modparam_pio)
bcm->__using_pio = 1;
bcm->rts_threshold = BCM43xx_DEFAULT_RTS_THRESHOLD;
/* default to sw encryption for now */
bcm->ieee->host_build_iv = 0;
bcm->ieee->host_encrypt = 1;
bcm->ieee->host_decrypt = 1;
bcm->ieee->iw_mode = BCM43xx_INITIAL_IWMODE;
bcm->ieee->tx_headroom = sizeof(struct bcm43xx_txhdr);
bcm->ieee->set_security = bcm43xx_ieee80211_set_security;
bcm->ieee->hard_start_xmit = bcm43xx_ieee80211_hard_start_xmit;
return 0;
}
static int __devinit bcm43xx_init_one(struct pci_dev *pdev,
const struct pci_device_id *ent)
{
struct net_device *net_dev;
struct bcm43xx_private *bcm;
int err;
#ifdef CONFIG_BCM947XX
if ((pdev->bus->number == 0) && (pdev->device != 0x0800))
return -ENODEV;
#endif
#ifdef DEBUG_SINGLE_DEVICE_ONLY
if (strcmp(pci_name(pdev), DEBUG_SINGLE_DEVICE_ONLY))
return -ENODEV;
#endif
net_dev = alloc_ieee80211softmac(sizeof(*bcm));
if (!net_dev) {
printk(KERN_ERR PFX
"could not allocate ieee80211 device %s\n",
pci_name(pdev));
err = -ENOMEM;
goto out;
}
/* initialize the net_device struct */
SET_MODULE_OWNER(net_dev);
SET_NETDEV_DEV(net_dev, &pdev->dev);
net_dev->open = bcm43xx_net_open;
net_dev->stop = bcm43xx_net_stop;
net_dev->get_stats = bcm43xx_net_get_stats;
net_dev->tx_timeout = bcm43xx_net_tx_timeout;
#ifdef CONFIG_NET_POLL_CONTROLLER
net_dev->poll_controller = bcm43xx_net_poll_controller;
#endif
net_dev->wireless_handlers = &bcm43xx_wx_handlers_def;
net_dev->irq = pdev->irq;
SET_ETHTOOL_OPS(net_dev, &bcm43xx_ethtool_ops);
/* initialize the bcm43xx_private struct */
bcm = bcm43xx_priv(net_dev);
memset(bcm, 0, sizeof(*bcm));
err = bcm43xx_init_private(bcm, net_dev, pdev);
if (err)
goto err_free_netdev;
pci_set_drvdata(pdev, net_dev);
err = bcm43xx_attach_board(bcm);
if (err)
goto err_free_netdev;
err = register_netdev(net_dev);
if (err) {
printk(KERN_ERR PFX "Cannot register net device, "
"aborting.\n");
err = -ENOMEM;
goto err_detach_board;
}
bcm43xx_debugfs_add_device(bcm);
assert(err == 0);
out:
return err;
err_detach_board:
bcm43xx_detach_board(bcm);
err_free_netdev:
free_ieee80211softmac(net_dev);
goto out;
}
static void __devexit bcm43xx_remove_one(struct pci_dev *pdev)
{
struct net_device *net_dev = pci_get_drvdata(pdev);
struct bcm43xx_private *bcm = bcm43xx_priv(net_dev);
bcm43xx_debugfs_remove_device(bcm);
unregister_netdev(net_dev);
bcm43xx_detach_board(bcm);
free_ieee80211softmac(net_dev);
}
/* Hard-reset the chip. Do not call this directly.
* Use bcm43xx_controller_restart()
*/
static void bcm43xx_chip_reset(void *_bcm)
{
struct bcm43xx_private *bcm = _bcm;
struct bcm43xx_phyinfo *phy;
int err = -ENODEV;
mutex_lock(&(bcm)->mutex);
if (bcm43xx_status(bcm) == BCM43xx_STAT_INITIALIZED) {
bcm43xx_periodic_tasks_delete(bcm);
phy = bcm43xx_current_phy(bcm);
err = bcm43xx_select_wireless_core(bcm, phy->type);
if (!err)
bcm43xx_periodic_tasks_setup(bcm);
}
mutex_unlock(&(bcm)->mutex);
printk(KERN_ERR PFX "Controller restart%s\n",
(err == 0) ? "ed" : " failed");
}
/* Hard-reset the chip.
* This can be called from interrupt or process context.
* bcm->irq_lock must be locked.
*/
void bcm43xx_controller_restart(struct bcm43xx_private *bcm, const char *reason)
{
if (bcm43xx_status(bcm) != BCM43xx_STAT_INITIALIZED)
return;
printk(KERN_ERR PFX "Controller RESET (%s) ...\n", reason);
INIT_WORK(&bcm->restart_work, bcm43xx_chip_reset, bcm);
schedule_work(&bcm->restart_work);
}
#ifdef CONFIG_PM
static int bcm43xx_suspend(struct pci_dev *pdev, pm_message_t state)
{
struct net_device *net_dev = pci_get_drvdata(pdev);
struct bcm43xx_private *bcm = bcm43xx_priv(net_dev);
int err;
dprintk(KERN_INFO PFX "Suspending...\n");
netif_device_detach(net_dev);
bcm->was_initialized = 0;
if (bcm43xx_status(bcm) == BCM43xx_STAT_INITIALIZED) {
bcm->was_initialized = 1;
ieee80211softmac_stop(net_dev);
err = bcm43xx_disable_interrupts_sync(bcm);
if (unlikely(err)) {
dprintk(KERN_ERR PFX "Suspend failed.\n");
return -EAGAIN;
}
bcm->firmware_norelease = 1;
bcm43xx_free_board(bcm);
bcm->firmware_norelease = 0;
}
bcm43xx_chipset_detach(bcm);
pci_save_state(pdev);
pci_disable_device(pdev);
pci_set_power_state(pdev, pci_choose_state(pdev, state));
dprintk(KERN_INFO PFX "Device suspended.\n");
return 0;
}
static int bcm43xx_resume(struct pci_dev *pdev)
{
struct net_device *net_dev = pci_get_drvdata(pdev);
struct bcm43xx_private *bcm = bcm43xx_priv(net_dev);
int err = 0;
dprintk(KERN_INFO PFX "Resuming...\n");
pci_set_power_state(pdev, 0);
err = pci_enable_device(pdev);
if (err) {
printk(KERN_ERR PFX "Failure with pci_enable_device!\n");
return err;
}
pci_restore_state(pdev);
bcm43xx_chipset_attach(bcm);
if (bcm->was_initialized)
err = bcm43xx_init_board(bcm);
if (err) {
printk(KERN_ERR PFX "Resume failed!\n");
return err;
}
netif_device_attach(net_dev);
dprintk(KERN_INFO PFX "Device resumed.\n");
return 0;
}
#endif /* CONFIG_PM */
static struct pci_driver bcm43xx_pci_driver = {
.name = KBUILD_MODNAME,
.id_table = bcm43xx_pci_tbl,
.probe = bcm43xx_init_one,
.remove = __devexit_p(bcm43xx_remove_one),
#ifdef CONFIG_PM
.suspend = bcm43xx_suspend,
.resume = bcm43xx_resume,
#endif /* CONFIG_PM */
};
static int __init bcm43xx_init(void)
{
printk(KERN_INFO KBUILD_MODNAME " driver\n");
bcm43xx_debugfs_init();
return pci_register_driver(&bcm43xx_pci_driver);
}
static void __exit bcm43xx_exit(void)
{
pci_unregister_driver(&bcm43xx_pci_driver);
bcm43xx_debugfs_exit();
}
module_init(bcm43xx_init)
module_exit(bcm43xx_exit)
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