freebsd-skq/sys/dev/ath/ath_hal/ah.c
sam 4d97934ead Overhaul regulatory support:
o remove HAL_CHANNEL; convert the hal to use net80211 channels; this
  mostly involves mechanical changes to variable names and channel
  attribute macros
o gut HAL_CHANNEL_PRIVATE as most of the contents are now redundant
  with the net80211 channel available
o change api for ath_hal_init_channels: no more reglass id's, no more outdoor
  indication (was a noop), anM contents
o add ath_hal_getchannels to have the hal construct a channel list without
  altering runtime state; this is used to retrieve the calibration list for
  the device in ath_getradiocaps
o add ath_hal_set_channels to take a channel list and regulatory data from
  above and construct internal state to match (maps frequencies for 900MHz
  cards, setup for CTL lookups, etc)
o compact the private channel table: we keep one private channel
  per frequency instead of one per HAL_CHANNEL; this gives a big
  space savings and potentially improves ani and calibration by
  sharing state (to be seen; didn't see anything in testing); a new config
  option AH_MAXCHAN controls the table size (default to 96 which
  was chosen to be ~3x the largest expected size)
o shrink ani state and change to mirror private channel table (one entry per
  frequency indexed by ic_devdata)
o move ani state flags to private channel state
o remove country codes; use net80211 definitions instead
o remove GSM regulatory support; it's no longer needed now that we
  pass in channel lists from above
o consolidate ADHOC_NO_11A attribute with DISALLOW_ADHOC_11A
o simplify initial channel list construction based on the EEPROM contents;
  we preserve country code support for now but may want to just fallback
  to a WWR sku and dispatch the discovered country code up to user space
  so the channel list can be constructed using the master regdomain tables
o defer to net80211 for max antenna gain
o eliminate sorting of internal channel table; now that we use ic_devdata
  as an index, table lookups are O(1)
o remove internal copy of the country code; the public one is sufficient
o remove AH_SUPPORT_11D conditional compilation; we always support 11d
o remove ath_hal_ispublicsafetysku; not needed any more
o remove ath_hal_isgsmsku; no more GSM stuff
o move Conformance Test Limit (CTL) state from private channel to a lookup
  using per-band pointers cached in the private state block
o remove regulatory class id support; was unused and belongs in net80211
o fix channel list construction to set IEEE80211_CHAN_NOADHOC,
  IEEE80211_CHAN_NOHOSTAP, and IEEE80211_CHAN_4MSXMIT
o remove private channel flags CHANNEL_DFS and CHANNEL_4MS_LIMIT; these are
  now set in the constructed net80211 channel
o store CHANNEL_NFCREQUIRED (Noise Floor Required) channel attribute in one
  of the driver-private flag bits of the net80211 channel
o move 900MHz frequency mapping into the hal; the mapped frequency is stored
  in the private channel and used throughout the hal (no more mapping in the
  driver and/or net80211)
o remove ath_hal_mhz2ieee; it's no longer needed as net80211 does the
  calculation and available in the net80211 channel
o change noise floor calibration logic to work with compacted private channel
  table setup; this may require revisiting as we no longer can distinguish
  channel attributes (e.g. 11b vs 11g vs turbo) but since the data is used
  only to calculate status data we can live with it for now
o change ah_getChipPowerLimits internal method to operate on a single channel
  instead of all channels in the private channel table
o add ath_hal_gethwchannel to map a net80211 channel to a h/w frequency
  (always the same except for 900MHz channels)
o add HAL_EEBADREG and HAL_EEBADCC status codes to better identify regulatory
  problems
o remove CTRY_DEBUG and CTRY_DEFAULT enum's; these come from net80211 now
o change ath_hal_getwirelessmodes to really return wireless modes supported
  by the hardware (was previously applying regulatory constraints)
o return channel interference status with IEEE80211_CHANSTATE_CWINT (should
  change to a callback so hal api's can take const pointers)
o remove some #define's no longer needed with the inclusion of
  <net80211/_ieee80211.h>

Sponsored by:   Carlson Wireless
2009-01-28 18:00:22 +00:00

827 lines
23 KiB
C

/*
* Copyright (c) 2002-2009 Sam Leffler, Errno Consulting
* Copyright (c) 2002-2008 Atheros Communications, Inc.
*
* Permission to use, copy, modify, and/or 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.
*
* $FreeBSD$
*/
#include "opt_ah.h"
#include "ah.h"
#include "ah_internal.h"
#include "ah_devid.h"
/* linker set of registered chips */
OS_SET_DECLARE(ah_chips, struct ath_hal_chip);
/*
* Check the set of registered chips to see if any recognize
* the device as one they can support.
*/
const char*
ath_hal_probe(uint16_t vendorid, uint16_t devid)
{
struct ath_hal_chip * const *pchip;
OS_SET_FOREACH(pchip, ah_chips) {
const char *name = (*pchip)->probe(vendorid, devid);
if (name != AH_NULL)
return name;
}
return AH_NULL;
}
/*
* Attach detects device chip revisions, initializes the hwLayer
* function list, reads EEPROM information,
* selects reset vectors, and performs a short self test.
* Any failures will return an error that should cause a hardware
* disable.
*/
struct ath_hal*
ath_hal_attach(uint16_t devid, HAL_SOFTC sc,
HAL_BUS_TAG st, HAL_BUS_HANDLE sh, HAL_STATUS *error)
{
struct ath_hal_chip * const *pchip;
OS_SET_FOREACH(pchip, ah_chips) {
struct ath_hal_chip *chip = *pchip;
struct ath_hal *ah;
/* XXX don't have vendorid, assume atheros one works */
if (chip->probe(ATHEROS_VENDOR_ID, devid) == AH_NULL)
continue;
ah = chip->attach(devid, sc, st, sh, error);
if (ah != AH_NULL) {
/* copy back private state to public area */
ah->ah_devid = AH_PRIVATE(ah)->ah_devid;
ah->ah_subvendorid = AH_PRIVATE(ah)->ah_subvendorid;
ah->ah_macVersion = AH_PRIVATE(ah)->ah_macVersion;
ah->ah_macRev = AH_PRIVATE(ah)->ah_macRev;
ah->ah_phyRev = AH_PRIVATE(ah)->ah_phyRev;
ah->ah_analog5GhzRev = AH_PRIVATE(ah)->ah_analog5GhzRev;
ah->ah_analog2GhzRev = AH_PRIVATE(ah)->ah_analog2GhzRev;
return ah;
}
}
return AH_NULL;
}
/*
* Return the mask of available modes based on the hardware capabilities.
*/
u_int
ath_hal_getwirelessmodes(struct ath_hal*ah)
{
return ath_hal_getWirelessModes(ah);
}
/* linker set of registered RF backends */
OS_SET_DECLARE(ah_rfs, struct ath_hal_rf);
/*
* Check the set of registered RF backends to see if
* any recognize the device as one they can support.
*/
struct ath_hal_rf *
ath_hal_rfprobe(struct ath_hal *ah, HAL_STATUS *ecode)
{
struct ath_hal_rf * const *prf;
OS_SET_FOREACH(prf, ah_rfs) {
struct ath_hal_rf *rf = *prf;
if (rf->probe(ah))
return rf;
}
*ecode = HAL_ENOTSUPP;
return AH_NULL;
}
/*
* Poll the register looking for a specific value.
*/
HAL_BOOL
ath_hal_wait(struct ath_hal *ah, u_int reg, uint32_t mask, uint32_t val)
{
#define AH_TIMEOUT 1000
int i;
for (i = 0; i < AH_TIMEOUT; i++) {
if ((OS_REG_READ(ah, reg) & mask) == val)
return AH_TRUE;
OS_DELAY(10);
}
HALDEBUG(ah, HAL_DEBUG_REGIO | HAL_DEBUG_PHYIO,
"%s: timeout on reg 0x%x: 0x%08x & 0x%08x != 0x%08x\n",
__func__, reg, OS_REG_READ(ah, reg), mask, val);
return AH_FALSE;
#undef AH_TIMEOUT
}
/*
* Reverse the bits starting at the low bit for a value of
* bit_count in size
*/
uint32_t
ath_hal_reverseBits(uint32_t val, uint32_t n)
{
uint32_t retval;
int i;
for (i = 0, retval = 0; i < n; i++) {
retval = (retval << 1) | (val & 1);
val >>= 1;
}
return retval;
}
/*
* Compute the time to transmit a frame of length frameLen bytes
* using the specified rate, phy, and short preamble setting.
*/
uint16_t
ath_hal_computetxtime(struct ath_hal *ah,
const HAL_RATE_TABLE *rates, uint32_t frameLen, uint16_t rateix,
HAL_BOOL shortPreamble)
{
uint32_t bitsPerSymbol, numBits, numSymbols, phyTime, txTime;
uint32_t kbps;
kbps = rates->info[rateix].rateKbps;
/*
* index can be invalid duting dynamic Turbo transitions.
* XXX
*/
if (kbps == 0)
return 0;
switch (rates->info[rateix].phy) {
case IEEE80211_T_CCK:
#define CCK_SIFS_TIME 10
#define CCK_PREAMBLE_BITS 144
#define CCK_PLCP_BITS 48
phyTime = CCK_PREAMBLE_BITS + CCK_PLCP_BITS;
if (shortPreamble && rates->info[rateix].shortPreamble)
phyTime >>= 1;
numBits = frameLen << 3;
txTime = CCK_SIFS_TIME + phyTime
+ ((numBits * 1000)/kbps);
break;
#undef CCK_SIFS_TIME
#undef CCK_PREAMBLE_BITS
#undef CCK_PLCP_BITS
case IEEE80211_T_OFDM:
#define OFDM_SIFS_TIME 16
#define OFDM_PREAMBLE_TIME 20
#define OFDM_PLCP_BITS 22
#define OFDM_SYMBOL_TIME 4
#define OFDM_SIFS_TIME_HALF 32
#define OFDM_PREAMBLE_TIME_HALF 40
#define OFDM_PLCP_BITS_HALF 22
#define OFDM_SYMBOL_TIME_HALF 8
#define OFDM_SIFS_TIME_QUARTER 64
#define OFDM_PREAMBLE_TIME_QUARTER 80
#define OFDM_PLCP_BITS_QUARTER 22
#define OFDM_SYMBOL_TIME_QUARTER 16
if (AH_PRIVATE(ah)->ah_curchan != AH_NULL &&
IEEE80211_IS_CHAN_QUARTER(AH_PRIVATE(ah)->ah_curchan)) {
bitsPerSymbol = (kbps * OFDM_SYMBOL_TIME_QUARTER) / 1000;
HALASSERT(bitsPerSymbol != 0);
numBits = OFDM_PLCP_BITS + (frameLen << 3);
numSymbols = howmany(numBits, bitsPerSymbol);
txTime = OFDM_SIFS_TIME_QUARTER
+ OFDM_PREAMBLE_TIME_QUARTER
+ (numSymbols * OFDM_SYMBOL_TIME_QUARTER);
} else if (AH_PRIVATE(ah)->ah_curchan != AH_NULL &&
IEEE80211_IS_CHAN_HALF(AH_PRIVATE(ah)->ah_curchan)) {
bitsPerSymbol = (kbps * OFDM_SYMBOL_TIME_HALF) / 1000;
HALASSERT(bitsPerSymbol != 0);
numBits = OFDM_PLCP_BITS + (frameLen << 3);
numSymbols = howmany(numBits, bitsPerSymbol);
txTime = OFDM_SIFS_TIME_HALF +
OFDM_PREAMBLE_TIME_HALF
+ (numSymbols * OFDM_SYMBOL_TIME_HALF);
} else { /* full rate channel */
bitsPerSymbol = (kbps * OFDM_SYMBOL_TIME) / 1000;
HALASSERT(bitsPerSymbol != 0);
numBits = OFDM_PLCP_BITS + (frameLen << 3);
numSymbols = howmany(numBits, bitsPerSymbol);
txTime = OFDM_SIFS_TIME + OFDM_PREAMBLE_TIME
+ (numSymbols * OFDM_SYMBOL_TIME);
}
break;
#undef OFDM_SIFS_TIME
#undef OFDM_PREAMBLE_TIME
#undef OFDM_PLCP_BITS
#undef OFDM_SYMBOL_TIME
case IEEE80211_T_TURBO:
#define TURBO_SIFS_TIME 8
#define TURBO_PREAMBLE_TIME 14
#define TURBO_PLCP_BITS 22
#define TURBO_SYMBOL_TIME 4
/* we still save OFDM rates in kbps - so double them */
bitsPerSymbol = ((kbps << 1) * TURBO_SYMBOL_TIME) / 1000;
HALASSERT(bitsPerSymbol != 0);
numBits = TURBO_PLCP_BITS + (frameLen << 3);
numSymbols = howmany(numBits, bitsPerSymbol);
txTime = TURBO_SIFS_TIME + TURBO_PREAMBLE_TIME
+ (numSymbols * TURBO_SYMBOL_TIME);
break;
#undef TURBO_SIFS_TIME
#undef TURBO_PREAMBLE_TIME
#undef TURBO_PLCP_BITS
#undef TURBO_SYMBOL_TIME
default:
HALDEBUG(ah, HAL_DEBUG_PHYIO,
"%s: unknown phy %u (rate ix %u)\n",
__func__, rates->info[rateix].phy, rateix);
txTime = 0;
break;
}
return txTime;
}
typedef enum {
WIRELESS_MODE_11a = 0,
WIRELESS_MODE_TURBO = 1,
WIRELESS_MODE_11b = 2,
WIRELESS_MODE_11g = 3,
WIRELESS_MODE_108g = 4,
WIRELESS_MODE_MAX
} WIRELESS_MODE;
static WIRELESS_MODE
ath_hal_chan2wmode(struct ath_hal *ah, const struct ieee80211_channel *chan)
{
if (IEEE80211_IS_CHAN_B(chan))
return WIRELESS_MODE_11b;
if (IEEE80211_IS_CHAN_G(chan))
return WIRELESS_MODE_11g;
if (IEEE80211_IS_CHAN_108G(chan))
return WIRELESS_MODE_108g;
if (IEEE80211_IS_CHAN_TURBO(chan))
return WIRELESS_MODE_TURBO;
return WIRELESS_MODE_11a;
}
/*
* Convert between microseconds and core system clocks.
*/
/* 11a Turbo 11b 11g 108g */
static const uint8_t CLOCK_RATE[] = { 40, 80, 22, 44, 88 };
u_int
ath_hal_mac_clks(struct ath_hal *ah, u_int usecs)
{
const struct ieee80211_channel *c = AH_PRIVATE(ah)->ah_curchan;
u_int clks;
/* NB: ah_curchan may be null when called attach time */
if (c != AH_NULL) {
clks = usecs * CLOCK_RATE[ath_hal_chan2wmode(ah, c)];
if (IEEE80211_IS_CHAN_HT40(c))
clks <<= 1;
else if (IEEE80211_IS_CHAN_HALF(c))
clks >>= 1;
else if (IEEE80211_IS_CHAN_QUARTER(c))
clks >>= 2;
} else
clks = usecs * CLOCK_RATE[WIRELESS_MODE_11b];
return clks;
}
u_int
ath_hal_mac_usec(struct ath_hal *ah, u_int clks)
{
const struct ieee80211_channel *c = AH_PRIVATE(ah)->ah_curchan;
u_int usec;
/* NB: ah_curchan may be null when called attach time */
if (c != AH_NULL) {
usec = clks / CLOCK_RATE[ath_hal_chan2wmode(ah, c)];
if (IEEE80211_IS_CHAN_HT40(c))
usec >>= 1;
else if (IEEE80211_IS_CHAN_HALF(c))
usec <<= 1;
else if (IEEE80211_IS_CHAN_QUARTER(c))
usec <<= 2;
} else
usec = clks / CLOCK_RATE[WIRELESS_MODE_11b];
return usec;
}
/*
* Setup a h/w rate table's reverse lookup table and
* fill in ack durations. This routine is called for
* each rate table returned through the ah_getRateTable
* method. The reverse lookup tables are assumed to be
* initialized to zero (or at least the first entry).
* We use this as a key that indicates whether or not
* we've previously setup the reverse lookup table.
*
* XXX not reentrant, but shouldn't matter
*/
void
ath_hal_setupratetable(struct ath_hal *ah, HAL_RATE_TABLE *rt)
{
#define N(a) (sizeof(a)/sizeof(a[0]))
int i;
if (rt->rateCodeToIndex[0] != 0) /* already setup */
return;
for (i = 0; i < N(rt->rateCodeToIndex); i++)
rt->rateCodeToIndex[i] = (uint8_t) -1;
for (i = 0; i < rt->rateCount; i++) {
uint8_t code = rt->info[i].rateCode;
uint8_t cix = rt->info[i].controlRate;
HALASSERT(code < N(rt->rateCodeToIndex));
rt->rateCodeToIndex[code] = i;
HALASSERT((code | rt->info[i].shortPreamble) <
N(rt->rateCodeToIndex));
rt->rateCodeToIndex[code | rt->info[i].shortPreamble] = i;
/*
* XXX for 11g the control rate to use for 5.5 and 11 Mb/s
* depends on whether they are marked as basic rates;
* the static tables are setup with an 11b-compatible
* 2Mb/s rate which will work but is suboptimal
*/
rt->info[i].lpAckDuration = ath_hal_computetxtime(ah, rt,
WLAN_CTRL_FRAME_SIZE, cix, AH_FALSE);
rt->info[i].spAckDuration = ath_hal_computetxtime(ah, rt,
WLAN_CTRL_FRAME_SIZE, cix, AH_TRUE);
}
#undef N
}
HAL_STATUS
ath_hal_getcapability(struct ath_hal *ah, HAL_CAPABILITY_TYPE type,
uint32_t capability, uint32_t *result)
{
const HAL_CAPABILITIES *pCap = &AH_PRIVATE(ah)->ah_caps;
switch (type) {
case HAL_CAP_REG_DMN: /* regulatory domain */
*result = AH_PRIVATE(ah)->ah_currentRD;
return HAL_OK;
case HAL_CAP_CIPHER: /* cipher handled in hardware */
case HAL_CAP_TKIP_MIC: /* handle TKIP MIC in hardware */
return HAL_ENOTSUPP;
case HAL_CAP_TKIP_SPLIT: /* hardware TKIP uses split keys */
return HAL_ENOTSUPP;
case HAL_CAP_PHYCOUNTERS: /* hardware PHY error counters */
return pCap->halHwPhyCounterSupport ? HAL_OK : HAL_ENXIO;
case HAL_CAP_WME_TKIPMIC: /* hardware can do TKIP MIC when WMM is turned on */
return HAL_ENOTSUPP;
case HAL_CAP_DIVERSITY: /* hardware supports fast diversity */
return HAL_ENOTSUPP;
case HAL_CAP_KEYCACHE_SIZE: /* hardware key cache size */
*result = pCap->halKeyCacheSize;
return HAL_OK;
case HAL_CAP_NUM_TXQUEUES: /* number of hardware tx queues */
*result = pCap->halTotalQueues;
return HAL_OK;
case HAL_CAP_VEOL: /* hardware supports virtual EOL */
return pCap->halVEOLSupport ? HAL_OK : HAL_ENOTSUPP;
case HAL_CAP_PSPOLL: /* hardware PS-Poll support works */
return pCap->halPSPollBroken ? HAL_ENOTSUPP : HAL_OK;
case HAL_CAP_COMPRESSION:
return pCap->halCompressSupport ? HAL_OK : HAL_ENOTSUPP;
case HAL_CAP_BURST:
return pCap->halBurstSupport ? HAL_OK : HAL_ENOTSUPP;
case HAL_CAP_FASTFRAME:
return pCap->halFastFramesSupport ? HAL_OK : HAL_ENOTSUPP;
case HAL_CAP_DIAG: /* hardware diagnostic support */
*result = AH_PRIVATE(ah)->ah_diagreg;
return HAL_OK;
case HAL_CAP_TXPOW: /* global tx power limit */
switch (capability) {
case 0: /* facility is supported */
return HAL_OK;
case 1: /* current limit */
*result = AH_PRIVATE(ah)->ah_powerLimit;
return HAL_OK;
case 2: /* current max tx power */
*result = AH_PRIVATE(ah)->ah_maxPowerLevel;
return HAL_OK;
case 3: /* scale factor */
*result = AH_PRIVATE(ah)->ah_tpScale;
return HAL_OK;
}
return HAL_ENOTSUPP;
case HAL_CAP_BSSIDMASK: /* hardware supports bssid mask */
return pCap->halBssIdMaskSupport ? HAL_OK : HAL_ENOTSUPP;
case HAL_CAP_MCAST_KEYSRCH: /* multicast frame keycache search */
return pCap->halMcastKeySrchSupport ? HAL_OK : HAL_ENOTSUPP;
case HAL_CAP_TSF_ADJUST: /* hardware has beacon tsf adjust */
return HAL_ENOTSUPP;
case HAL_CAP_RFSILENT: /* rfsilent support */
switch (capability) {
case 0: /* facility is supported */
return pCap->halRfSilentSupport ? HAL_OK : HAL_ENOTSUPP;
case 1: /* current setting */
return AH_PRIVATE(ah)->ah_rfkillEnabled ?
HAL_OK : HAL_ENOTSUPP;
case 2: /* rfsilent config */
*result = AH_PRIVATE(ah)->ah_rfsilent;
return HAL_OK;
}
return HAL_ENOTSUPP;
case HAL_CAP_11D:
return HAL_OK;
case HAL_CAP_RXORN_FATAL: /* HAL_INT_RXORN treated as fatal */
return AH_PRIVATE(ah)->ah_rxornIsFatal ? HAL_OK : HAL_ENOTSUPP;
case HAL_CAP_HT:
return pCap->halHTSupport ? HAL_OK : HAL_ENOTSUPP;
case HAL_CAP_TX_CHAINMASK: /* mask of TX chains supported */
*result = pCap->halTxChainMask;
return HAL_OK;
case HAL_CAP_RX_CHAINMASK: /* mask of RX chains supported */
*result = pCap->halRxChainMask;
return HAL_OK;
case HAL_CAP_RXTSTAMP_PREC: /* rx desc tstamp precision (bits) */
*result = pCap->halTstampPrecision;
return HAL_OK;
default:
return HAL_EINVAL;
}
}
HAL_BOOL
ath_hal_setcapability(struct ath_hal *ah, HAL_CAPABILITY_TYPE type,
uint32_t capability, uint32_t setting, HAL_STATUS *status)
{
switch (type) {
case HAL_CAP_TXPOW:
switch (capability) {
case 3:
if (setting <= HAL_TP_SCALE_MIN) {
AH_PRIVATE(ah)->ah_tpScale = setting;
return AH_TRUE;
}
break;
}
break;
case HAL_CAP_RFSILENT: /* rfsilent support */
/*
* NB: allow even if halRfSilentSupport is false
* in case the EEPROM is misprogrammed.
*/
switch (capability) {
case 1: /* current setting */
AH_PRIVATE(ah)->ah_rfkillEnabled = (setting != 0);
return AH_TRUE;
case 2: /* rfsilent config */
/* XXX better done per-chip for validation? */
AH_PRIVATE(ah)->ah_rfsilent = setting;
return AH_TRUE;
}
break;
case HAL_CAP_REG_DMN: /* regulatory domain */
AH_PRIVATE(ah)->ah_currentRD = setting;
return AH_TRUE;
case HAL_CAP_RXORN_FATAL: /* HAL_INT_RXORN treated as fatal */
AH_PRIVATE(ah)->ah_rxornIsFatal = setting;
return AH_TRUE;
default:
break;
}
if (status)
*status = HAL_EINVAL;
return AH_FALSE;
}
/*
* Common support for getDiagState method.
*/
static u_int
ath_hal_getregdump(struct ath_hal *ah, const HAL_REGRANGE *regs,
void *dstbuf, int space)
{
uint32_t *dp = dstbuf;
int i;
for (i = 0; space >= 2*sizeof(uint32_t); i++) {
u_int r = regs[i].start;
u_int e = regs[i].end;
*dp++ = (r<<16) | e;
space -= sizeof(uint32_t);
do {
*dp++ = OS_REG_READ(ah, r);
r += sizeof(uint32_t);
space -= sizeof(uint32_t);
} while (r <= e && space >= sizeof(uint32_t));
}
return (char *) dp - (char *) dstbuf;
}
HAL_BOOL
ath_hal_getdiagstate(struct ath_hal *ah, int request,
const void *args, uint32_t argsize,
void **result, uint32_t *resultsize)
{
switch (request) {
case HAL_DIAG_REVS:
*result = &AH_PRIVATE(ah)->ah_devid;
*resultsize = sizeof(HAL_REVS);
return AH_TRUE;
case HAL_DIAG_REGS:
*resultsize = ath_hal_getregdump(ah, args, *result,*resultsize);
return AH_TRUE;
case HAL_DIAG_FATALERR:
*result = &AH_PRIVATE(ah)->ah_fatalState[0];
*resultsize = sizeof(AH_PRIVATE(ah)->ah_fatalState);
return AH_TRUE;
case HAL_DIAG_EEREAD:
if (argsize != sizeof(uint16_t))
return AH_FALSE;
if (!ath_hal_eepromRead(ah, *(const uint16_t *)args, *result))
return AH_FALSE;
*resultsize = sizeof(uint16_t);
return AH_TRUE;
#ifdef AH_PRIVATE_DIAG
case HAL_DIAG_SETKEY: {
const HAL_DIAG_KEYVAL *dk;
if (argsize != sizeof(HAL_DIAG_KEYVAL))
return AH_FALSE;
dk = (const HAL_DIAG_KEYVAL *)args;
return ah->ah_setKeyCacheEntry(ah, dk->dk_keyix,
&dk->dk_keyval, dk->dk_mac, dk->dk_xor);
}
case HAL_DIAG_RESETKEY:
if (argsize != sizeof(uint16_t))
return AH_FALSE;
return ah->ah_resetKeyCacheEntry(ah, *(const uint16_t *)args);
#ifdef AH_SUPPORT_WRITE_EEPROM
case HAL_DIAG_EEWRITE: {
const HAL_DIAG_EEVAL *ee;
if (argsize != sizeof(HAL_DIAG_EEVAL))
return AH_FALSE;
ee = (const HAL_DIAG_EEVAL *)args;
return ath_hal_eepromWrite(ah, ee->ee_off, ee->ee_data);
}
#endif /* AH_SUPPORT_WRITE_EEPROM */
#endif /* AH_PRIVATE_DIAG */
case HAL_DIAG_11NCOMPAT:
if (argsize == 0) {
*resultsize = sizeof(uint32_t);
*((uint32_t *)(*result)) =
AH_PRIVATE(ah)->ah_11nCompat;
} else if (argsize == sizeof(uint32_t)) {
AH_PRIVATE(ah)->ah_11nCompat = *(const uint32_t *)args;
} else
return AH_FALSE;
return AH_TRUE;
}
return AH_FALSE;
}
/*
* Set the properties of the tx queue with the parameters
* from qInfo.
*/
HAL_BOOL
ath_hal_setTxQProps(struct ath_hal *ah,
HAL_TX_QUEUE_INFO *qi, const HAL_TXQ_INFO *qInfo)
{
uint32_t cw;
if (qi->tqi_type == HAL_TX_QUEUE_INACTIVE) {
HALDEBUG(ah, HAL_DEBUG_TXQUEUE,
"%s: inactive queue\n", __func__);
return AH_FALSE;
}
/* XXX validate parameters */
qi->tqi_ver = qInfo->tqi_ver;
qi->tqi_subtype = qInfo->tqi_subtype;
qi->tqi_qflags = qInfo->tqi_qflags;
qi->tqi_priority = qInfo->tqi_priority;
if (qInfo->tqi_aifs != HAL_TXQ_USEDEFAULT)
qi->tqi_aifs = AH_MIN(qInfo->tqi_aifs, 255);
else
qi->tqi_aifs = INIT_AIFS;
if (qInfo->tqi_cwmin != HAL_TXQ_USEDEFAULT) {
cw = AH_MIN(qInfo->tqi_cwmin, 1024);
/* make sure that the CWmin is of the form (2^n - 1) */
qi->tqi_cwmin = 1;
while (qi->tqi_cwmin < cw)
qi->tqi_cwmin = (qi->tqi_cwmin << 1) | 1;
} else
qi->tqi_cwmin = qInfo->tqi_cwmin;
if (qInfo->tqi_cwmax != HAL_TXQ_USEDEFAULT) {
cw = AH_MIN(qInfo->tqi_cwmax, 1024);
/* make sure that the CWmax is of the form (2^n - 1) */
qi->tqi_cwmax = 1;
while (qi->tqi_cwmax < cw)
qi->tqi_cwmax = (qi->tqi_cwmax << 1) | 1;
} else
qi->tqi_cwmax = INIT_CWMAX;
/* Set retry limit values */
if (qInfo->tqi_shretry != 0)
qi->tqi_shretry = AH_MIN(qInfo->tqi_shretry, 15);
else
qi->tqi_shretry = INIT_SH_RETRY;
if (qInfo->tqi_lgretry != 0)
qi->tqi_lgretry = AH_MIN(qInfo->tqi_lgretry, 15);
else
qi->tqi_lgretry = INIT_LG_RETRY;
qi->tqi_cbrPeriod = qInfo->tqi_cbrPeriod;
qi->tqi_cbrOverflowLimit = qInfo->tqi_cbrOverflowLimit;
qi->tqi_burstTime = qInfo->tqi_burstTime;
qi->tqi_readyTime = qInfo->tqi_readyTime;
switch (qInfo->tqi_subtype) {
case HAL_WME_UPSD:
if (qi->tqi_type == HAL_TX_QUEUE_DATA)
qi->tqi_intFlags = HAL_TXQ_USE_LOCKOUT_BKOFF_DIS;
break;
default:
break; /* NB: silence compiler */
}
return AH_TRUE;
}
HAL_BOOL
ath_hal_getTxQProps(struct ath_hal *ah,
HAL_TXQ_INFO *qInfo, const HAL_TX_QUEUE_INFO *qi)
{
if (qi->tqi_type == HAL_TX_QUEUE_INACTIVE) {
HALDEBUG(ah, HAL_DEBUG_TXQUEUE,
"%s: inactive queue\n", __func__);
return AH_FALSE;
}
qInfo->tqi_qflags = qi->tqi_qflags;
qInfo->tqi_ver = qi->tqi_ver;
qInfo->tqi_subtype = qi->tqi_subtype;
qInfo->tqi_qflags = qi->tqi_qflags;
qInfo->tqi_priority = qi->tqi_priority;
qInfo->tqi_aifs = qi->tqi_aifs;
qInfo->tqi_cwmin = qi->tqi_cwmin;
qInfo->tqi_cwmax = qi->tqi_cwmax;
qInfo->tqi_shretry = qi->tqi_shretry;
qInfo->tqi_lgretry = qi->tqi_lgretry;
qInfo->tqi_cbrPeriod = qi->tqi_cbrPeriod;
qInfo->tqi_cbrOverflowLimit = qi->tqi_cbrOverflowLimit;
qInfo->tqi_burstTime = qi->tqi_burstTime;
qInfo->tqi_readyTime = qi->tqi_readyTime;
return AH_TRUE;
}
/* 11a Turbo 11b 11g 108g */
static const int16_t NOISE_FLOOR[] = { -96, -93, -98, -96, -93 };
/*
* Read the current channel noise floor and return.
* If nf cal hasn't finished, channel noise floor should be 0
* and we return a nominal value based on band and frequency.
*
* NB: This is a private routine used by per-chip code to
* implement the ah_getChanNoise method.
*/
int16_t
ath_hal_getChanNoise(struct ath_hal *ah, const struct ieee80211_channel *chan)
{
HAL_CHANNEL_INTERNAL *ichan;
ichan = ath_hal_checkchannel(ah, chan);
if (ichan == AH_NULL) {
HALDEBUG(ah, HAL_DEBUG_NFCAL,
"%s: invalid channel %u/0x%x; no mapping\n",
__func__, chan->ic_freq, chan->ic_flags);
return 0;
}
if (ichan->rawNoiseFloor == 0) {
WIRELESS_MODE mode = ath_hal_chan2wmode(ah, chan);
HALASSERT(mode < WIRELESS_MODE_MAX);
return NOISE_FLOOR[mode] + ath_hal_getNfAdjust(ah, ichan);
} else
return ichan->rawNoiseFloor + ichan->noiseFloorAdjust;
}
/*
* Process all valid raw noise floors into the dBm noise floor values.
* Though our device has no reference for a dBm noise floor, we perform
* a relative minimization of NF's based on the lowest NF found across a
* channel scan.
*/
void
ath_hal_process_noisefloor(struct ath_hal *ah)
{
HAL_CHANNEL_INTERNAL *c;
int16_t correct2, correct5;
int16_t lowest2, lowest5;
int i;
/*
* Find the lowest 2GHz and 5GHz noise floor values after adjusting
* for statistically recorded NF/channel deviation.
*/
correct2 = lowest2 = 0;
correct5 = lowest5 = 0;
for (i = 0; i < AH_PRIVATE(ah)->ah_nchan; i++) {
WIRELESS_MODE mode;
int16_t nf;
c = &AH_PRIVATE(ah)->ah_channels[i];
if (c->rawNoiseFloor >= 0)
continue;
/* XXX can't identify proper mode */
mode = IS_CHAN_5GHZ(c) ? WIRELESS_MODE_11a : WIRELESS_MODE_11g;
nf = c->rawNoiseFloor + NOISE_FLOOR[mode] +
ath_hal_getNfAdjust(ah, c);
if (IS_CHAN_5GHZ(c)) {
if (nf < lowest5) {
lowest5 = nf;
correct5 = NOISE_FLOOR[mode] -
(c->rawNoiseFloor + ath_hal_getNfAdjust(ah, c));
}
} else {
if (nf < lowest2) {
lowest2 = nf;
correct2 = NOISE_FLOOR[mode] -
(c->rawNoiseFloor + ath_hal_getNfAdjust(ah, c));
}
}
}
/* Correct the channels to reach the expected NF value */
for (i = 0; i < AH_PRIVATE(ah)->ah_nchan; i++) {
c = &AH_PRIVATE(ah)->ah_channels[i];
if (c->rawNoiseFloor >= 0)
continue;
/* Apply correction factor */
c->noiseFloorAdjust = ath_hal_getNfAdjust(ah, c) +
(IS_CHAN_5GHZ(c) ? correct5 : correct2);
HALDEBUG(ah, HAL_DEBUG_NFCAL, "%u raw nf %d adjust %d\n",
c->channel, c->rawNoiseFloor, c->noiseFloorAdjust);
}
}
/*
* INI support routines.
*/
int
ath_hal_ini_write(struct ath_hal *ah, const HAL_INI_ARRAY *ia,
int col, int regWr)
{
int r;
for (r = 0; r < ia->rows; r++) {
OS_REG_WRITE(ah, HAL_INI_VAL(ia, r, 0),
HAL_INI_VAL(ia, r, col));
DMA_YIELD(regWr);
}
return regWr;
}
void
ath_hal_ini_bank_setup(uint32_t data[], const HAL_INI_ARRAY *ia, int col)
{
int r;
for (r = 0; r < ia->rows; r++)
data[r] = HAL_INI_VAL(ia, r, col);
}
int
ath_hal_ini_bank_write(struct ath_hal *ah, const HAL_INI_ARRAY *ia,
const uint32_t data[], int regWr)
{
int r;
for (r = 0; r < ia->rows; r++) {
OS_REG_WRITE(ah, HAL_INI_VAL(ia, r, 0), data[r]);
DMA_YIELD(regWr);
}
return regWr;
}