gpxe: delete long since obsolete snapshot of gPXE

gPXE has been deprecated in favor of iPXE for many, many years now.
It is much better than users get it directly from the iPXE project,
since we should no longer need any special modifications for Syslinux
use.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>

1 files changed, 0 insertions, 534 deletions

diff --git a/gpxe/src/drivers/net/ath5k/ath5k_pcu.c b/gpxe/src/drivers/net/ath5k/ath5k_pcu.c
deleted file mode 100644
index d3e144c4..00000000
--- a/gpxe/src/drivers/net/ath5k/ath5k_pcu.c
+++ /dev/null
@@ -1,534 +0,0 @@
-/*
- * Copyright (c) 2004-2008 Reyk Floeter <reyk@openbsd.org>
- * Copyright (c) 2006-2008 Nick Kossifidis <mickflemm@gmail.com>
- * Copyright (c) 2007-2008 Matthew W. S. Bell  <mentor@madwifi.org>
- * Copyright (c) 2007-2008 Luis Rodriguez <mcgrof@winlab.rutgers.edu>
- * Copyright (c) 2007-2008 Pavel Roskin <proski@gnu.org>
- * Copyright (c) 2007-2008 Jiri Slaby <jirislaby@gmail.com>
- *
- * Lightly modified for gPXE, July 2009, by Joshua Oreman <oremanj@rwcr.net>.
- *
- * Permission to use, copy, modify, and distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
- * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- *
- */
-
-FILE_LICENCE ( MIT );
-
-/*********************************\
-* Protocol Control Unit Functions *
-\*********************************/
-
-#include "ath5k.h"
-#include "reg.h"
-#include "base.h"
-
-/*******************\
-* Generic functions *
-\*******************/
-
-/**
- * ath5k_hw_set_opmode - Set PCU operating mode
- *
- * @ah: The &struct ath5k_hw
- *
- * Initialize PCU for the various operating modes (AP/STA etc)
- *
- * For gPXE we always assume STA mode.
- */
-int ath5k_hw_set_opmode(struct ath5k_hw *ah)
-{
-	u32 pcu_reg, beacon_reg, low_id, high_id;
-
-
-	/* Preserve rest settings */
-	pcu_reg = ath5k_hw_reg_read(ah, AR5K_STA_ID1) & 0xffff0000;
-	pcu_reg &= ~(AR5K_STA_ID1_ADHOC | AR5K_STA_ID1_AP
-			| AR5K_STA_ID1_KEYSRCH_MODE
-			| (ah->ah_version == AR5K_AR5210 ?
-			(AR5K_STA_ID1_PWR_SV | AR5K_STA_ID1_NO_PSPOLL) : 0));
-
-	beacon_reg = 0;
-
-	pcu_reg |= AR5K_STA_ID1_KEYSRCH_MODE
-		| (ah->ah_version == AR5K_AR5210 ?
-		   AR5K_STA_ID1_PWR_SV : 0);
-
-	/*
-	 * Set PCU registers
-	 */
-	low_id = AR5K_LOW_ID(ah->ah_sta_id);
-	high_id = AR5K_HIGH_ID(ah->ah_sta_id);
-	ath5k_hw_reg_write(ah, low_id, AR5K_STA_ID0);
-	ath5k_hw_reg_write(ah, pcu_reg | high_id, AR5K_STA_ID1);
-
-	/*
-	 * Set Beacon Control Register on 5210
-	 */
-	if (ah->ah_version == AR5K_AR5210)
-		ath5k_hw_reg_write(ah, beacon_reg, AR5K_BCR);
-
-	return 0;
-}
-
-/**
- * ath5k_hw_set_ack_bitrate - set bitrate for ACKs
- *
- * @ah: The &struct ath5k_hw
- * @high: Flag to determine if we want to use high transmition rate
- * for ACKs or not
- *
- * If high flag is set, we tell hw to use a set of control rates based on
- * the current transmition rate (check out control_rates array inside reset.c).
- * If not hw just uses the lowest rate available for the current modulation
- * scheme being used (1Mbit for CCK and 6Mbits for OFDM).
- */
-void ath5k_hw_set_ack_bitrate_high(struct ath5k_hw *ah, int high)
-{
-	if (ah->ah_version != AR5K_AR5212)
-		return;
-	else {
-		u32 val = AR5K_STA_ID1_BASE_RATE_11B | AR5K_STA_ID1_ACKCTS_6MB;
-		if (high)
-			AR5K_REG_ENABLE_BITS(ah, AR5K_STA_ID1, val);
-		else
-			AR5K_REG_DISABLE_BITS(ah, AR5K_STA_ID1, val);
-	}
-}
-
-
-/******************\
-* ACK/CTS Timeouts *
-\******************/
-
-/**
- * ath5k_hw_het_ack_timeout - Get ACK timeout from PCU in usec
- *
- * @ah: The &struct ath5k_hw
- */
-unsigned int ath5k_hw_get_ack_timeout(struct ath5k_hw *ah)
-{
-	return ath5k_hw_clocktoh(AR5K_REG_MS(ath5k_hw_reg_read(ah,
-			AR5K_TIME_OUT), AR5K_TIME_OUT_ACK), ah->ah_turbo);
-}
-
-/**
- * ath5k_hw_set_ack_timeout - Set ACK timeout on PCU
- *
- * @ah: The &struct ath5k_hw
- * @timeout: Timeout in usec
- */
-int ath5k_hw_set_ack_timeout(struct ath5k_hw *ah, unsigned int timeout)
-{
-	if (ath5k_hw_clocktoh(AR5K_REG_MS(0xffffffff, AR5K_TIME_OUT_ACK),
-			ah->ah_turbo) <= timeout)
-		return -EINVAL;
-
-	AR5K_REG_WRITE_BITS(ah, AR5K_TIME_OUT, AR5K_TIME_OUT_ACK,
-		ath5k_hw_htoclock(timeout, ah->ah_turbo));
-
-	return 0;
-}
-
-/**
- * ath5k_hw_get_cts_timeout - Get CTS timeout from PCU in usec
- *
- * @ah: The &struct ath5k_hw
- */
-unsigned int ath5k_hw_get_cts_timeout(struct ath5k_hw *ah)
-{
-	return ath5k_hw_clocktoh(AR5K_REG_MS(ath5k_hw_reg_read(ah,
-			AR5K_TIME_OUT), AR5K_TIME_OUT_CTS), ah->ah_turbo);
-}
-
-/**
- * ath5k_hw_set_cts_timeout - Set CTS timeout on PCU
- *
- * @ah: The &struct ath5k_hw
- * @timeout: Timeout in usec
- */
-int ath5k_hw_set_cts_timeout(struct ath5k_hw *ah, unsigned int timeout)
-{
-	if (ath5k_hw_clocktoh(AR5K_REG_MS(0xffffffff, AR5K_TIME_OUT_CTS),
-			ah->ah_turbo) <= timeout)
-		return -EINVAL;
-
-	AR5K_REG_WRITE_BITS(ah, AR5K_TIME_OUT, AR5K_TIME_OUT_CTS,
-			ath5k_hw_htoclock(timeout, ah->ah_turbo));
-
-	return 0;
-}
-
-
-/****************\
-* BSSID handling *
-\****************/
-
-/**
- * ath5k_hw_get_lladdr - Get station id
- *
- * @ah: The &struct ath5k_hw
- * @mac: The card's mac address
- *
- * Initialize ah->ah_sta_id using the mac address provided
- * (just a memcpy).
- *
- * TODO: Remove it once we merge ath5k_softc and ath5k_hw
- */
-void ath5k_hw_get_lladdr(struct ath5k_hw *ah, u8 *mac)
-{
-	memcpy(mac, ah->ah_sta_id, ETH_ALEN);
-}
-
-/**
- * ath5k_hw_set_lladdr - Set station id
- *
- * @ah: The &struct ath5k_hw
- * @mac: The card's mac address
- *
- * Set station id on hw using the provided mac address
- */
-int ath5k_hw_set_lladdr(struct ath5k_hw *ah, const u8 *mac)
-{
-	u32 low_id, high_id;
-	u32 pcu_reg;
-
-	/* Set new station ID */
-	memcpy(ah->ah_sta_id, mac, ETH_ALEN);
-
-	pcu_reg = ath5k_hw_reg_read(ah, AR5K_STA_ID1) & 0xffff0000;
-
-	low_id = AR5K_LOW_ID(mac);
-	high_id = AR5K_HIGH_ID(mac);
-
-	ath5k_hw_reg_write(ah, low_id, AR5K_STA_ID0);
-	ath5k_hw_reg_write(ah, pcu_reg | high_id, AR5K_STA_ID1);
-
-	return 0;
-}
-
-/**
- * ath5k_hw_set_associd - Set BSSID for association
- *
- * @ah: The &struct ath5k_hw
- * @bssid: BSSID
- * @assoc_id: Assoc id
- *
- * Sets the BSSID which trigers the "SME Join" operation
- */
-void ath5k_hw_set_associd(struct ath5k_hw *ah, const u8 *bssid, u16 assoc_id)
-{
-	u32 low_id, high_id;
-
-	/*
-	 * Set simple BSSID mask on 5212
-	 */
-	if (ah->ah_version == AR5K_AR5212) {
-		ath5k_hw_reg_write(ah, AR5K_LOW_ID(ah->ah_bssid_mask),
-							AR5K_BSS_IDM0);
-		ath5k_hw_reg_write(ah, AR5K_HIGH_ID(ah->ah_bssid_mask),
-							AR5K_BSS_IDM1);
-	}
-
-	/*
-	 * Set BSSID which triggers the "SME Join" operation
-	 */
-	low_id = AR5K_LOW_ID(bssid);
-	high_id = AR5K_HIGH_ID(bssid);
-	ath5k_hw_reg_write(ah, low_id, AR5K_BSS_ID0);
-	ath5k_hw_reg_write(ah, high_id | ((assoc_id & 0x3fff) <<
-				AR5K_BSS_ID1_AID_S), AR5K_BSS_ID1);
-}
-
-/**
- * ath5k_hw_set_bssid_mask - filter out bssids we listen
- *
- * @ah: the &struct ath5k_hw
- * @mask: the bssid_mask, a u8 array of size ETH_ALEN
- *
- * BSSID masking is a method used by AR5212 and newer hardware to inform PCU
- * which bits of the interface's MAC address should be looked at when trying
- * to decide which packets to ACK. In station mode and AP mode with a single
- * BSS every bit matters since we lock to only one BSS. In AP mode with
- * multiple BSSes (virtual interfaces) not every bit matters because hw must
- * accept frames for all BSSes and so we tweak some bits of our mac address
- * in order to have multiple BSSes.
- *
- * NOTE: This is a simple filter and does *not* filter out all
- * relevant frames. Some frames that are not for us might get ACKed from us
- * by PCU because they just match the mask.
- *
- * When handling multiple BSSes you can get the BSSID mask by computing the
- * set of  ~ ( MAC XOR BSSID ) for all bssids we handle.
- *
- * When you do this you are essentially computing the common bits of all your
- * BSSes. Later it is assumed the harware will "and" (&) the BSSID mask with
- * the MAC address to obtain the relevant bits and compare the result with
- * (frame's BSSID & mask) to see if they match.
- */
-/*
- * Simple example: on your card you have have two BSSes you have created with
- * BSSID-01 and BSSID-02. Lets assume BSSID-01 will not use the MAC address.
- * There is another BSSID-03 but you are not part of it. For simplicity's sake,
- * assuming only 4 bits for a mac address and for BSSIDs you can then have:
- *
- *                  \
- * MAC:                0001 |
- * BSSID-01:   0100 | --> Belongs to us
- * BSSID-02:   1001 |
- *                  /
- * -------------------
- * BSSID-03:   0110  | --> External
- * -------------------
- *
- * Our bssid_mask would then be:
- *
- *             On loop iteration for BSSID-01:
- *             ~(0001 ^ 0100)  -> ~(0101)
- *                             ->   1010
- *             bssid_mask      =    1010
- *
- *             On loop iteration for BSSID-02:
- *             bssid_mask &= ~(0001   ^   1001)
- *             bssid_mask =   (1010)  & ~(0001 ^ 1001)
- *             bssid_mask =   (1010)  & ~(1001)
- *             bssid_mask =   (1010)  &  (0110)
- *             bssid_mask =   0010
- *
- * A bssid_mask of 0010 means "only pay attention to the second least
- * significant bit". This is because its the only bit common
- * amongst the MAC and all BSSIDs we support. To findout what the real
- * common bit is we can simply "&" the bssid_mask now with any BSSID we have
- * or our MAC address (we assume the hardware uses the MAC address).
- *
- * Now, suppose there's an incoming frame for BSSID-03:
- *
- * IFRAME-01:  0110
- *
- * An easy eye-inspeciton of this already should tell you that this frame
- * will not pass our check. This is beacuse the bssid_mask tells the
- * hardware to only look at the second least significant bit and the
- * common bit amongst the MAC and BSSIDs is 0, this frame has the 2nd LSB
- * as 1, which does not match 0.
- *
- * So with IFRAME-01 we *assume* the hardware will do:
- *
- *     allow = (IFRAME-01 & bssid_mask) == (bssid_mask & MAC) ? 1 : 0;
- *  --> allow = (0110 & 0010) == (0010 & 0001) ? 1 : 0;
- *  --> allow = (0010) == 0000 ? 1 : 0;
- *  --> allow = 0
- *
- *  Lets now test a frame that should work:
- *
- * IFRAME-02:  0001 (we should allow)
- *
- *     allow = (0001 & 1010) == 1010
- *
- *     allow = (IFRAME-02 & bssid_mask) == (bssid_mask & MAC) ? 1 : 0;
- *  --> allow = (0001 & 0010) ==  (0010 & 0001) ? 1 :0;
- *  --> allow = (0010) == (0010)
- *  --> allow = 1
- *
- * Other examples:
- *
- * IFRAME-03:  0100 --> allowed
- * IFRAME-04:  1001 --> allowed
- * IFRAME-05:  1101 --> allowed but its not for us!!!
- *
- */
-int ath5k_hw_set_bssid_mask(struct ath5k_hw *ah, const u8 *mask)
-{
-	u32 low_id, high_id;
-
-	/* Cache bssid mask so that we can restore it
-	 * on reset */
-	memcpy(ah->ah_bssid_mask, mask, ETH_ALEN);
-	if (ah->ah_version == AR5K_AR5212) {
-		low_id = AR5K_LOW_ID(mask);
-		high_id = AR5K_HIGH_ID(mask);
-
-		ath5k_hw_reg_write(ah, low_id, AR5K_BSS_IDM0);
-		ath5k_hw_reg_write(ah, high_id, AR5K_BSS_IDM1);
-
-		return 0;
-	}
-
-	return -EIO;
-}
-
-
-/************\
-* RX Control *
-\************/
-
-/**
- * ath5k_hw_start_rx_pcu - Start RX engine
- *
- * @ah: The &struct ath5k_hw
- *
- * Starts RX engine on PCU so that hw can process RXed frames
- * (ACK etc).
- *
- * NOTE: RX DMA should be already enabled using ath5k_hw_start_rx_dma
- * TODO: Init ANI here
- */
-void ath5k_hw_start_rx_pcu(struct ath5k_hw *ah)
-{
-	AR5K_REG_DISABLE_BITS(ah, AR5K_DIAG_SW, AR5K_DIAG_SW_DIS_RX);
-}
-
-/**
- * at5k_hw_stop_rx_pcu - Stop RX engine
- *
- * @ah: The &struct ath5k_hw
- *
- * Stops RX engine on PCU
- *
- * TODO: Detach ANI here
- */
-void ath5k_hw_stop_rx_pcu(struct ath5k_hw *ah)
-{
-	AR5K_REG_ENABLE_BITS(ah, AR5K_DIAG_SW, AR5K_DIAG_SW_DIS_RX);
-}
-
-/*
- * Set multicast filter
- */
-void ath5k_hw_set_mcast_filter(struct ath5k_hw *ah, u32 filter0, u32 filter1)
-{
-	/* Set the multicat filter */
-	ath5k_hw_reg_write(ah, filter0, AR5K_MCAST_FILTER0);
-	ath5k_hw_reg_write(ah, filter1, AR5K_MCAST_FILTER1);
-}
-
-/**
- * ath5k_hw_get_rx_filter - Get current rx filter
- *
- * @ah: The &struct ath5k_hw
- *
- * Returns the RX filter by reading rx filter and
- * phy error filter registers. RX filter is used
- * to set the allowed frame types that PCU will accept
- * and pass to the driver. For a list of frame types
- * check out reg.h.
- */
-u32 ath5k_hw_get_rx_filter(struct ath5k_hw *ah)
-{
-	u32 data, filter = 0;
-
-	filter = ath5k_hw_reg_read(ah, AR5K_RX_FILTER);
-
-	/*Radar detection for 5212*/
-	if (ah->ah_version == AR5K_AR5212) {
-		data = ath5k_hw_reg_read(ah, AR5K_PHY_ERR_FIL);
-
-		if (data & AR5K_PHY_ERR_FIL_RADAR)
-			filter |= AR5K_RX_FILTER_RADARERR;
-		if (data & (AR5K_PHY_ERR_FIL_OFDM | AR5K_PHY_ERR_FIL_CCK))
-			filter |= AR5K_RX_FILTER_PHYERR;
-	}
-
-	return filter;
-}
-
-/**
- * ath5k_hw_set_rx_filter - Set rx filter
- *
- * @ah: The &struct ath5k_hw
- * @filter: RX filter mask (see reg.h)
- *
- * Sets RX filter register and also handles PHY error filter
- * register on 5212 and newer chips so that we have proper PHY
- * error reporting.
- */
-void ath5k_hw_set_rx_filter(struct ath5k_hw *ah, u32 filter)
-{
-	u32 data = 0;
-
-	/* Set PHY error filter register on 5212*/
-	if (ah->ah_version == AR5K_AR5212) {
-		if (filter & AR5K_RX_FILTER_RADARERR)
-			data |= AR5K_PHY_ERR_FIL_RADAR;
-		if (filter & AR5K_RX_FILTER_PHYERR)
-			data |= AR5K_PHY_ERR_FIL_OFDM | AR5K_PHY_ERR_FIL_CCK;
-	}
-
-	/*
-	 * The AR5210 uses promiscous mode to detect radar activity
-	 */
-	if (ah->ah_version == AR5K_AR5210 &&
-			(filter & AR5K_RX_FILTER_RADARERR)) {
-		filter &= ~AR5K_RX_FILTER_RADARERR;
-		filter |= AR5K_RX_FILTER_PROM;
-	}
-
-	/*Zero length DMA (phy error reporting) */
-	if (data)
-		AR5K_REG_ENABLE_BITS(ah, AR5K_RXCFG, AR5K_RXCFG_ZLFDMA);
-	else
-		AR5K_REG_DISABLE_BITS(ah, AR5K_RXCFG, AR5K_RXCFG_ZLFDMA);
-
-	/*Write RX Filter register*/
-	ath5k_hw_reg_write(ah, filter & 0xff, AR5K_RX_FILTER);
-
-	/*Write PHY error filter register on 5212*/
-	if (ah->ah_version == AR5K_AR5212)
-		ath5k_hw_reg_write(ah, data, AR5K_PHY_ERR_FIL);
-
-}
-
-/*********************\
-* Key table functions *
-\*********************/
-
-/*
- * Reset a key entry on the table
- */
-int ath5k_hw_reset_key(struct ath5k_hw *ah, u16 entry)
-{
-	unsigned int i, type;
-	u16 micentry = entry + AR5K_KEYTABLE_MIC_OFFSET;
-
-	type = ath5k_hw_reg_read(ah, AR5K_KEYTABLE_TYPE(entry));
-
-	for (i = 0; i < AR5K_KEYCACHE_SIZE; i++)
-		ath5k_hw_reg_write(ah, 0, AR5K_KEYTABLE_OFF(entry, i));
-
-	/* Reset associated MIC entry if TKIP
-	 * is enabled located at offset (entry + 64) */
-	if (type == AR5K_KEYTABLE_TYPE_TKIP) {
-		for (i = 0; i < AR5K_KEYCACHE_SIZE / 2 ; i++)
-			ath5k_hw_reg_write(ah, 0,
-				AR5K_KEYTABLE_OFF(micentry, i));
-	}
-
-	/*
-	 * Set NULL encryption on AR5212+
-	 *
-	 * Note: AR5K_KEYTABLE_TYPE -> AR5K_KEYTABLE_OFF(entry, 5)
-	 *       AR5K_KEYTABLE_TYPE_NULL -> 0x00000007
-	 *
-	 * Note2: Windows driver (ndiswrapper) sets this to
-	 *        0x00000714 instead of 0x00000007
-	 */
-	if (ah->ah_version >= AR5K_AR5211) {
-		ath5k_hw_reg_write(ah, AR5K_KEYTABLE_TYPE_NULL,
-				AR5K_KEYTABLE_TYPE(entry));
-
-		if (type == AR5K_KEYTABLE_TYPE_TKIP) {
-			ath5k_hw_reg_write(ah, AR5K_KEYTABLE_TYPE_NULL,
-				AR5K_KEYTABLE_TYPE(micentry));
-		}
-	}
-
-	return 0;
-}