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b43: Add more N-PHY stuff

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This adds some minor stuff for N-PHY support. Nothing special.
Adds Analog switching and some TODOs for RSSI processing.
Just a patch I had floating around for quite some time now.

Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Michael Buesch 2008-04-03 18:01:12 +02:00 committed by John W. Linville
parent 9cfb0009da
commit 7b58416397
4 changed files with 41 additions and 12 deletions
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14
drivers/net/wireless/b43/main.c
View File

@ -46,6 +46,7 @@
#include "main.h"
#include "debugfs.h"
#include "phy.h"
#include "nphy.h"
#include "dma.h"
#include "pio.h"
#include "sysfs.h"
@ -1019,7 +1020,18 @@ void b43_power_saving_ctl_bits(struct b43_wldev *dev, unsigned int ps_flags)
/* Turn the Analog ON/OFF */
static void b43_switch_analog(struct b43_wldev *dev, int on)
{
b43_write16(dev, B43_MMIO_PHY0, on ? 0 : 0xF4);
switch (dev->phy.type) {
case B43_PHYTYPE_A:
case B43_PHYTYPE_G:
b43_write16(dev, B43_MMIO_PHY0, on ? 0 : 0xF4);
break;
case B43_PHYTYPE_N:
b43_phy_write(dev, B43_NPHY_AFECTL_OVER,
on ? 0 : 0x7FFF);
break;
default:
B43_WARN_ON(1);
}
}
void b43_wireless_core_reset(struct b43_wldev *dev, u32 flags)

1
drivers/net/wireless/b43/nphy.c
View File

@ -240,7 +240,6 @@ static void b43_nphy_workarounds(struct b43_wldev *dev)
b43_phy_set(dev, B43_NPHY_IQFLIP,
B43_NPHY_IQFLIP_ADC1 | B43_NPHY_IQFLIP_ADC2);
//FIXME the following condition is different in the specs.
if (1 /* FIXME band is 2.4GHz */) {
b43_phy_set(dev, B43_NPHY_CLASSCTL,
B43_NPHY_CLASSCTL_CCKEN);

23
drivers/net/wireless/b43/xmit.c
View File

@ -513,7 +513,6 @@ void b43_rx(struct b43_wldev *dev, struct sk_buff *skb, const void *_rxhdr)
u32 macstat;
u16 chanid;
u16 phytype;
u8 jssi;
int padding;
memset(&status, 0, sizeof(status));
@ -521,7 +520,6 @@ void b43_rx(struct b43_wldev *dev, struct sk_buff *skb, const void *_rxhdr)
/* Get metadata about the frame from the header. */
phystat0 = le16_to_cpu(rxhdr->phy_status0);
phystat3 = le16_to_cpu(rxhdr->phy_status3);
jssi = rxhdr->jssi;
macstat = le32_to_cpu(rxhdr->mac_status);
mactime = le16_to_cpu(rxhdr->mac_time);
chanstat = le16_to_cpu(rxhdr->channel);
@ -575,13 +573,22 @@ void b43_rx(struct b43_wldev *dev, struct sk_buff *skb, const void *_rxhdr)
}
}
status.ssi = b43_rssi_postprocess(dev, jssi,
(phystat0 & B43_RX_PHYST0_OFDM),
(phystat0 & B43_RX_PHYST0_GAINCTL),
(phystat3 & B43_RX_PHYST3_TRSTATE));
/* Link quality statistics */
status.noise = dev->stats.link_noise;
/* the next line looks wrong, but is what mac80211 wants */
status.signal = (jssi * 100) / B43_RX_MAX_SSI;
if ((chanstat & B43_RX_CHAN_PHYTYPE) == B43_PHYTYPE_N) {
// s8 rssi = max(rxhdr->power0, rxhdr->power1);
//TODO: Find out what the rssi value is (dBm or percentage?)
// and also find out what the maximum possible value is.
// Fill status.ssi and status.signal fields.
} else {
status.ssi = b43_rssi_postprocess(dev, rxhdr->jssi,
(phystat0 & B43_RX_PHYST0_OFDM),
(phystat0 & B43_RX_PHYST0_GAINCTL),
(phystat3 & B43_RX_PHYST3_TRSTATE));
/* the next line looks wrong, but is what mac80211 wants */
status.signal = (rxhdr->jssi * 100) / B43_RX_MAX_SSI;
}
if (phystat0 & B43_RX_PHYST0_OFDM)
status.rate_idx = b43_plcp_get_bitrate_idx_ofdm(plcp,
phytype == B43_PHYTYPE_A);

15
drivers/net/wireless/b43/xmit.h
View File

@ -212,8 +212,19 @@ struct b43_rxhdr_fw4 {
__le16 frame_len; /* Frame length */
PAD_BYTES(2);
__le16 phy_status0; /* PHY RX Status 0 */
__u8 jssi; /* PHY RX Status 1: JSSI */
__u8 sig_qual; /* PHY RX Status 1: Signal Quality */
union {
/* RSSI for A/B/G-PHYs */
struct {
__u8 jssi; /* PHY RX Status 1: JSSI */
__u8 sig_qual; /* PHY RX Status 1: Signal Quality */
} __attribute__ ((__packed__));
/* RSSI for N-PHYs */
struct {
__s8 power0; /* PHY RX Status 1: Power 0 */
__s8 power1; /* PHY RX Status 1: Power 1 */
} __attribute__ ((__packed__));
} __attribute__ ((__packed__));
__le16 phy_status2; /* PHY RX Status 2 */
__le16 phy_status3; /* PHY RX Status 3 */
__le32 mac_status; /* MAC RX status */