/*
* Copyright (c) 2010 Broadcom Corporation
* Copyright (c) 2013 Hauke Mehrtens <hauke@hauke-m.de>
*
* 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.
*/
#define pr_fmt(fmt) KBUILD_MODNAME
": " fmt
#include <linux/pci_ids.h>
#include <linux/if_ether.h>
#include <net/cfg80211.h>
#include <net/mac80211.h>
#include <brcm_hw_ids.h>
#include <aiutils.h>
#include <chipcommon.h>
#include "rate.h"
#include "scb.h"
#include "phy/phy_hal.h"
#include "channel.h"
#include "antsel.h"
#include "stf.h"
#include "ampdu.h"
#include "mac80211_if.h"
#include "ucode_loader.h"
#include "main.h"
#include "soc.h"
#include "dma.h"
#include "debug.h"
#include "brcms_trace_events.h"
/* watchdog timer, in unit of ms */
#define TIMER_INTERVAL_WATCHDOG 1000
/* radio monitor timer, in unit of ms */
#define TIMER_INTERVAL_RADIOCHK 800
/* beacon interval, in unit of 1024TU */
#define BEACON_INTERVAL_DEFAULT 100
/* n-mode support capability */
/* 2x2 includes both 1x1 & 2x2 devices
* reserved #define 2 for future when we want to separate 1x1 & 2x2 and
* control it independently
*/
#define WL_11N_2x2 1
#define WL_11N_3x3 3
#define WL_11N_4x4 4
#define EDCF_ACI_MASK 0x60
#define EDCF_ACI_SHIFT 5
#define EDCF_ECWMIN_MASK 0x0f
#define EDCF_ECWMAX_SHIFT 4
#define EDCF_AIFSN_MASK 0x0f
#define EDCF_AIFSN_MAX 15
#define EDCF_ECWMAX_MASK 0xf0
#define EDCF_AC_BE_TXOP_STA 0x0000
#define EDCF_AC_BK_TXOP_STA 0x0000
#define EDCF_AC_VO_ACI_STA 0x62
#define EDCF_AC_VO_ECW_STA 0x32
#define EDCF_AC_VI_ACI_STA 0x42
#define EDCF_AC_VI_ECW_STA 0x43
#define EDCF_AC_BK_ECW_STA 0xA4
#define EDCF_AC_VI_TXOP_STA 0x005e
#define EDCF_AC_VO_TXOP_STA 0x002f
#define EDCF_AC_BE_ACI_STA 0x03
#define EDCF_AC_BE_ECW_STA 0xA4
#define EDCF_AC_BK_ACI_STA 0x27
#define EDCF_AC_VO_TXOP_AP 0x002f
#define EDCF_TXOP2USEC(txop) ((txop) << 5)
#define EDCF_ECW2CW(exp) ((1 << (exp)) - 1)
#define APHY_SYMBOL_TIME 4
#define APHY_PREAMBLE_TIME 16
#define APHY_SIGNAL_TIME 4
#define APHY_SIFS_TIME 16
#define APHY_SERVICE_NBITS 16
#define APHY_TAIL_NBITS 6
#define BPHY_SIFS_TIME 10
#define BPHY_PLCP_SHORT_TIME 96
#define PREN_PREAMBLE 24
#define PREN_MM_EXT 12
#define PREN_PREAMBLE_EXT 4
#define DOT11_MAC_HDR_LEN 24
#define DOT11_ACK_LEN 10
#define DOT11_BA_LEN 4
#define DOT11_OFDM_SIGNAL_EXTENSION 6
#define DOT11_MIN_FRAG_LEN 256
#define DOT11_RTS_LEN 16
#define DOT11_CTS_LEN 10
#define DOT11_BA_BITMAP_LEN 128
#define DOT11_MAXNUMFRAGS 16
#define DOT11_MAX_FRAG_LEN 2346
#define BPHY_PLCP_TIME 192
#define RIFS_11N_TIME 2
/* length of the BCN template area */
#define BCN_TMPL_LEN 512
/* brcms_bss_info flag bit values */
#define BRCMS_BSS_HT 0x0020
/* BSS is HT (MIMO) capable */
/* chip rx buffer offset */
#define BRCMS_HWRXOFF 38
/* rfdisable delay timer 500 ms, runs of ALP clock */
#define RFDISABLE_DEFAULT 10000000
#define BRCMS_TEMPSENSE_PERIOD 10
/* 10 second timeout */
/* synthpu_dly times in us */
#define SYNTHPU_DLY_APHY_US 3700
#define SYNTHPU_DLY_BPHY_US 1050
#define SYNTHPU_DLY_NPHY_US 2048
#define SYNTHPU_DLY_LPPHY_US 300
#define ANTCNT 10
/* vanilla M_MAX_ANTCNT val */
/* Per-AC retry limit register definitions; uses defs.h bitfield macros */
#define EDCF_SHORT_S 0
#define EDCF_SFB_S 4
#define EDCF_LONG_S 8
#define EDCF_LFB_S 12
#define EDCF_SHORT_M BITFIELD_MASK(4)
#define EDCF_SFB_M BITFIELD_MASK(4)
#define EDCF_LONG_M BITFIELD_MASK(4)
#define EDCF_LFB_M BITFIELD_MASK(4)
#define RETRY_SHORT_DEF 7
/* Default Short retry Limit */
#define RETRY_SHORT_MAX 255
/* Maximum Short retry Limit */
#define RETRY_LONG_DEF 4
/* Default Long retry count */
#define RETRY_SHORT_FB 3
/* Short count for fb rate */
#define RETRY_LONG_FB 2
/* Long count for fb rate */
#define APHY_CWMIN 15
#define PHY_CWMAX 1023
#define EDCF_AIFSN_MIN 1
#define FRAGNUM_MASK 0xF
#define APHY_SLOT_TIME 9
#define BPHY_SLOT_TIME 20
#define WL_SPURAVOID_OFF 0
#define WL_SPURAVOID_ON1 1
#define WL_SPURAVOID_ON2 2
/* invalid core flags, use the saved coreflags */
#define BRCMS_USE_COREFLAGS 0xffffffff
/* values for PLCPHdr_override */
#define BRCMS_PLCP_AUTO -1
#define BRCMS_PLCP_SHORT 0
#define BRCMS_PLCP_LONG 1
/* values for g_protection_override and n_protection_override */
#define BRCMS_PROTECTION_AUTO -1
#define BRCMS_PROTECTION_OFF 0
#define BRCMS_PROTECTION_ON 1
#define BRCMS_PROTECTION_MMHDR_ONLY 2
#define BRCMS_PROTECTION_CTS_ONLY 3
/* values for g_protection_control and n_protection_control */
#define BRCMS_PROTECTION_CTL_OFF 0
#define BRCMS_PROTECTION_CTL_LOCAL 1
#define BRCMS_PROTECTION_CTL_OVERLAP 2
/* values for n_protection */
#define BRCMS_N_PROTECTION_OFF 0
#define BRCMS_N_PROTECTION_OPTIONAL 1
#define BRCMS_N_PROTECTION_20IN40 2
#define BRCMS_N_PROTECTION_MIXEDMODE 3
/* values for band specific 40MHz capabilities */
#define BRCMS_N_BW_20ALL 0
#define BRCMS_N_BW_40ALL 1
#define BRCMS_N_BW_20IN2G_40IN5G 2
/* bitflags for SGI support (sgi_rx iovar) */
#define BRCMS_N_SGI_20 0x01
#define BRCMS_N_SGI_40 0x02
/* defines used by the nrate iovar */
/* MSC in use,indicates b0-6 holds an mcs */
#define NRATE_MCS_INUSE 0x00000080
/* rate/mcs value */
#define NRATE_RATE_MASK 0x0000007f
/* stf mode mask: siso, cdd, stbc, sdm */
#define NRATE_STF_MASK 0x0000ff00
/* stf mode shift */
#define NRATE_STF_SHIFT 8
/* bit indicate to override mcs only */
#define NRATE_OVERRIDE_MCS_ONLY 0x40000000
#define NRATE_SGI_MASK 0x00800000
/* sgi mode */
#define NRATE_SGI_SHIFT 23
/* sgi mode */
#define NRATE_LDPC_CODING 0x00400000
/* adv coding in use */
#define NRATE_LDPC_SHIFT 22
/* ldpc shift */
#define NRATE_STF_SISO 0
/* stf mode SISO */
#define NRATE_STF_CDD 1
/* stf mode CDD */
#define NRATE_STF_STBC 2
/* stf mode STBC */
#define NRATE_STF_SDM 3
/* stf mode SDM */
#define MAX_DMA_SEGS 4
/* # of entries in Tx FIFO */
#define NTXD 64
/* Max # of entries in Rx FIFO based on 4kb page size */
#define NRXD 256
/* Amount of headroom to leave in Tx FIFO */
#define TX_HEADROOM 4
/* try to keep this # rbufs posted to the chip */
#define NRXBUFPOST 32
/* max # frames to process in brcms_c_recv() */
#define RXBND 8
/* max # tx status to process in wlc_txstatus() */
#define TXSBND 8
/*
* The following table lists the buffer memory allocated to xmt fifos in HW.
* the size is in units of 256bytes(one block), total size is HW dependent
* ucode has default fifo partition, sw can overwrite if necessary
*
* This is documented in twiki under the topic UcodeTxFifo. Please ensure
* the twiki is updated before making changes.
*/
/* Starting corerev for the fifo size table */
#define XMTFIFOTBL_STARTREV 17
struct d11init {
__le16 addr;
__le16 size;
__le32 value;
};
struct edcf_acparam {
u8 ACI;
u8 ECW;
u16 TXOP;
} __packed;
/* debug/trace */
uint brcm_msg_level;
/* TX FIFO number to WME/802.1E Access Category */
static const u8 wme_fifo2ac[] = {
IEEE80211_AC_BK,
IEEE80211_AC_BE,
IEEE80211_AC_VI,
IEEE80211_AC_VO,
IEEE80211_AC_BE,
IEEE80211_AC_BE
};
/* ieee80211 Access Category to TX FIFO number */
static const u8 wme_ac2fifo[] = {
TX_AC_VO_FIFO,
TX_AC_VI_FIFO,
TX_AC_BE_FIFO,
TX_AC_BK_FIFO
};
static const u16 xmtfifo_sz[][NFIFO] = {
/* corerev 17: 5120, 49152, 49152, 5376, 4352, 1280 */
{20, 192, 192, 21, 17, 5},
/* corerev 18: */
{0, 0, 0, 0, 0, 0},
/* corerev 19: */
{0, 0, 0, 0, 0, 0},
/* corerev 20: 5120, 49152, 49152, 5376, 4352, 1280 */
{20, 192, 192, 21, 17, 5},
/* corerev 21: 2304, 14848, 5632, 3584, 3584, 1280 */
{9, 58, 22, 14, 14, 5},
/* corerev 22: 5120, 49152, 49152, 5376, 4352, 1280 */
{20, 192, 192, 21, 17, 5},
/* corerev 23: 5120, 49152, 49152, 5376, 4352, 1280 */
{20, 192, 192, 21, 17, 5},
/* corerev 24: 2304, 14848, 5632, 3584, 3584, 1280 */
{9, 58, 22, 14, 14, 5},
/* corerev 25: */
{0, 0, 0, 0, 0, 0},
/* corerev 26: */
{0, 0, 0, 0, 0, 0},
/* corerev 27: */
{0, 0, 0, 0, 0, 0},
/* corerev 28: 2304, 14848, 5632, 3584, 3584, 1280 */
{9, 58, 22, 14, 14, 5},
};
#ifdef DEBUG
static const char *
const fifo_names[] = {
"AC_BK",
"AC_BE",
"AC_VI",
"AC_VO",
"BCMC",
"ATIM" };
#else
static const char fifo_names[6][1];
#endif
#ifdef DEBUG
/* pointer to most recently allocated wl/wlc */
static struct brcms_c_info *wlc_info_dbg = (
struct brcms_c_info *) (NULL);
#endif
/* Mapping of ieee80211 AC numbers to tx fifos */
static const u8 ac_to_fifo_mapping[IEEE80211_NUM_ACS] = {
[IEEE80211_AC_VO] = TX_AC_VO_FIFO,
[IEEE80211_AC_VI] = TX_AC_VI_FIFO,
[IEEE80211_AC_BE] = TX_AC_BE_FIFO,
[IEEE80211_AC_BK] = TX_AC_BK_FIFO,
};
/* Mapping of tx fifos to ieee80211 AC numbers */
static const u8 fifo_to_ac_mapping[IEEE80211_NUM_ACS] = {
[TX_AC_BK_FIFO] = IEEE80211_AC_BK,
[TX_AC_BE_FIFO] = IEEE80211_AC_BE,
[TX_AC_VI_FIFO] = IEEE80211_AC_VI,
[TX_AC_VO_FIFO] = IEEE80211_AC_VO,
};
static u8 brcms_ac_to_fifo(u8 ac)
{
if (ac >= ARRAY_SIZE(ac_to_fifo_mapping))
return TX_AC_BE_FIFO;
return ac_to_fifo_mapping[ac];
}
static u8 brcms_fifo_to_ac(u8 fifo)
{
if (fifo >= ARRAY_SIZE(fifo_to_ac_mapping))
return IEEE80211_AC_BE;
return fifo_to_ac_mapping[fifo];
}
/* Find basic rate for a given rate */
static u8 brcms_basic_rate(
struct brcms_c_info *wlc, u32 rspec)
{
if (is_mcs_rate(rspec))
return wlc->band->basic_rate[mcs_table[rspec & RSPEC_RATE_MASK]
.leg_ofdm];
return wlc->band->basic_rate[rspec & RSPEC_RATE_MASK];
}
static u16 frametype(u32 rspec, u8 mimoframe)
{
if (is_mcs_rate(rspec))
return mimoframe;
return is_cck_rate(rspec) ? FT_CCK : FT_OFDM;
}
/* currently the best mechanism for determining SIFS is the band in use */
static u16 get_sifs(
struct brcms_band *band)
{
return band->bandtype == BRCM_BAND_5G ? APHY_SIFS_TIME :
BPHY_SIFS_TIME;
}
/*
* Detect Card removed.
* Even checking an sbconfig register read will not false trigger when the core
* is in reset it breaks CF address mechanism. Accessing gphy phyversion will
* cause SB error if aphy is in reset on 4306B0-DB. Need a simple accessible
* reg with fixed 0/1 pattern (some platforms return all 0).
* If clocks are present, call the sb routine which will figure out if the
* device is removed.
*/
static bool brcms_deviceremoved(
struct brcms_c_info *wlc)
{
u32 macctrl;
if (!wlc->hw->clk)
return ai_deviceremoved(wlc->hw->sih);
macctrl = bcma_read32(wlc->hw->d11core,
D11REGOFFS(maccontrol));
return (macctrl & (MCTL_PSM_JMP_0 | MCTL_IHR_EN)) != MCTL_IHR_EN;
}
/* sum the individual fifo tx pending packet counts */
static int brcms_txpktpendtot(
struct brcms_c_info *wlc)
{
int i;
int pending = 0;
for (i = 0; i < ARRAY_SIZE(wlc->hw->di); i++)
if (wlc->hw->di[i])
pending += dma_txpending(wlc->hw->di[i]);
return pending;
}
static bool brcms_is_mband_unlocked(
struct brcms_c_info *wlc)
{
return wlc->pub->_nbands > 1 && !wlc->bandlocked;
}
static int brcms_chspec_bw(u16 chanspec)
{
if (CHSPEC_IS40(chanspec))
return BRCMS_40_MHZ;
if (CHSPEC_IS20(chanspec))
return BRCMS_20_MHZ;
return BRCMS_10_MHZ;
}
static void brcms_c_bsscfg_mfree(
struct brcms_bss_cfg *cfg)
{
if (cfg == NULL)
return;
kfree(cfg->current_bss);
kfree(cfg);
}
static void brcms_c_detach_mfree(
struct brcms_c_info *wlc)
{
if (wlc == NULL)
return;
brcms_c_bsscfg_mfree(wlc->bsscfg);
kfree(wlc->pub);
kfree(wlc->modulecb);
kfree(wlc->default_bss);
kfree(wlc->protection);
kfree(wlc->stf);
kfree(wlc->bandstate[0]);
if (wlc->corestate)
kfree(wlc->corestate->macstat_snapshot);
kfree(wlc->corestate);
if (wlc->hw)
kfree(wlc->hw->bandstate[0]);
kfree(wlc->hw);
if (wlc->beacon)
dev_kfree_skb_any(wlc->beacon);
if (wlc->probe_resp)
dev_kfree_skb_any(wlc->probe_resp);
kfree(wlc);
}
static struct brcms_bss_cfg *brcms_c_bsscfg_malloc(uint unit)
{
struct brcms_bss_cfg *cfg;
cfg = kzalloc(
sizeof(*cfg), GFP_ATOMIC);
if (cfg == NULL)
goto fail;
cfg->current_bss = kzalloc(
sizeof(*cfg->current_bss), GFP_ATOMIC);
if (cfg->current_bss == NULL)
goto fail;
return cfg;
fail:
brcms_c_bsscfg_mfree(cfg);
return NULL;
}
static struct brcms_c_info *
brcms_c_attach_malloc(uint unit, uint *err, uint devid)
{
struct brcms_c_info *wlc;
wlc = kzalloc(
sizeof(*wlc), GFP_ATOMIC);
if (wlc == NULL) {
*err = 1002;
goto fail;
}
/* allocate struct brcms_c_pub state structure */
wlc->pub = kzalloc(
sizeof(*wlc->pub), GFP_ATOMIC);
if (wlc->pub == NULL) {
*err = 1003;
goto fail;
}
wlc->pub->wlc = wlc;
/* allocate struct brcms_hardware state structure */
wlc->hw = kzalloc(
sizeof(*wlc->hw), GFP_ATOMIC);
if (wlc->hw == NULL) {
*err = 1005;
goto fail;
}
wlc->hw->wlc = wlc;
wlc->hw->bandstate[0] =
kcalloc(MAXBANDS,
sizeof(
struct brcms_hw_band), GFP_ATOMIC);
if (wlc->hw->bandstate[0] == NULL) {
*err = 1006;
goto fail;
}
else {
int i;
for (i = 1; i < MAXBANDS; i++)
wlc->hw->bandstate[i] = (
struct brcms_hw_band *)
((
unsigned long)wlc->hw->bandstate[0] +
(
sizeof(
struct brcms_hw_band) * i));
}
wlc->modulecb =
kcalloc(BRCMS_MAXMODULES,
sizeof(
struct modulecb),
GFP_ATOMIC);
if (wlc->modulecb == NULL) {
*err = 1009;
goto fail;
}
wlc->default_bss = kzalloc(
sizeof(*wlc->default_bss), GFP_ATOMIC);
if (wlc->default_bss == NULL) {
*err = 1010;
goto fail;
}
wlc->bsscfg = brcms_c_bsscfg_malloc(unit);
if (wlc->bsscfg == NULL) {
*err = 1011;
goto fail;
}
wlc->protection = kzalloc(
sizeof(*wlc->protection), GFP_ATOMIC);
if (wlc->protection == NULL) {
*err = 1016;
goto fail;
}
wlc->stf = kzalloc(
sizeof(*wlc->stf), GFP_ATOMIC);
if (wlc->stf == NULL) {
*err = 1017;
goto fail;
}
wlc->bandstate[0] =
kcalloc(MAXBANDS,
sizeof(*wlc->bandstate[0]), GFP_ATOMIC);
if (wlc->bandstate[0] == NULL) {
*err = 1025;
goto fail;
}
else {
int i;
for (i = 1; i < MAXBANDS; i++)
wlc->bandstate[i] = (
struct brcms_band *)
((
unsigned long)wlc->bandstate[0]
+ (
sizeof(
struct brcms_band)*i));
}
wlc->corestate = kzalloc(
sizeof(*wlc->corestate), GFP_ATOMIC);
if (wlc->corestate == NULL) {
*err = 1026;
goto fail;
}
wlc->corestate->macstat_snapshot =
kzalloc(
sizeof(*wlc->corestate->macstat_snapshot), GFP_ATOMIC);
if (wlc->corestate->macstat_snapshot == NULL) {
*err = 1027;
goto fail;
}
return wlc;
fail:
brcms_c_detach_mfree(wlc);
return NULL;
}
/*
* Update the slot timing for standard 11b/g (20us slots)
* or shortslot 11g (9us slots)
* The PSM needs to be suspended for this call.
*/
static void brcms_b_update_slot_timing(
struct brcms_hardware *wlc_hw,
bool shortslot)
{
struct bcma_device *core = wlc_hw->d11core;
if (shortslot) {
/* 11g short slot: 11a timing */
bcma_write16(core, D11REGOFFS(ifs_slot), 0x0207);
brcms_b_write_shm(wlc_hw, M_DOT11_SLOT, APHY_SLOT_TIME);
}
else {
/* 11g long slot: 11b timing */
bcma_write16(core, D11REGOFFS(ifs_slot), 0x0212);
brcms_b_write_shm(wlc_hw, M_DOT11_SLOT, BPHY_SLOT_TIME);
}
}
/*
* calculate frame duration of a given rate and length, return
* time in usec unit
*/
static uint brcms_c_calc_frame_time(
struct brcms_c_info *wlc, u32 ratespec,
u8 preamble_type, uint mac_len)
{
uint nsyms, dur = 0, Ndps, kNdps;
uint rate = rspec2rate(ratespec);
if (rate == 0) {
brcms_err(wlc->hw->d11core,
"wl%d: WAR: using rate of 1 mbps\n",
wlc->pub->unit);
rate = BRCM_RATE_1M;
}
if (is_mcs_rate(ratespec)) {
uint mcs = ratespec & RSPEC_RATE_MASK;
int tot_streams = mcs_2_txstreams(mcs) + rspec_stc(ratespec);
dur = PREN_PREAMBLE + (tot_streams * PREN_PREAMBLE_EXT);
if (preamble_type == BRCMS_MM_PREAMBLE)
dur += PREN_MM_EXT;
/* 1000Ndbps = kbps * 4 */
kNdps = mcs_2_rate(mcs, rspec_is40mhz(ratespec),
rspec_issgi(ratespec)) * 4;
if (rspec_stc(ratespec) == 0)
nsyms =
CEIL((APHY_SERVICE_NBITS + 8 * mac_len +
APHY_TAIL_NBITS) * 1000, kNdps);
else
/* STBC needs to have even number of symbols */
nsyms =
2 *
CEIL((APHY_SERVICE_NBITS + 8 * mac_len +
APHY_TAIL_NBITS) * 1000, 2 * kNdps);
dur += APHY_SYMBOL_TIME * nsyms;
if (wlc->band->bandtype == BRCM_BAND_2G)
dur += DOT11_OFDM_SIGNAL_EXTENSION;
}
else if (is_ofdm_rate(rate)) {
dur = APHY_PREAMBLE_TIME;
dur += APHY_SIGNAL_TIME;
/* Ndbps = Mbps * 4 = rate(500Kbps) * 2 */
Ndps = rate * 2;
/* NSyms = CEILING((SERVICE + 8*NBytes + TAIL) / Ndbps) */
nsyms =
CEIL((APHY_SERVICE_NBITS + 8 * mac_len + APHY_TAIL_NBITS),
Ndps);
dur += APHY_SYMBOL_TIME * nsyms;
if (wlc->band->bandtype == BRCM_BAND_2G)
dur += DOT11_OFDM_SIGNAL_EXTENSION;
}
else {
/*
* calc # bits * 2 so factor of 2 in rate (1/2 mbps)
* will divide out
*/
mac_len = mac_len * 8 * 2;
/* calc ceiling of bits/rate = microseconds of air time */
dur = (mac_len + rate - 1) / rate;
if (preamble_type & BRCMS_SHORT_PREAMBLE)
dur += BPHY_PLCP_SHORT_TIME;
else
dur += BPHY_PLCP_TIME;
}
return dur;
}
static void brcms_c_write_inits(
struct brcms_hardware *wlc_hw,
const struct d11init *inits)
{
struct bcma_device *core = wlc_hw->d11core;
int i;
uint offset;
u16 size;
u32 value;
brcms_dbg_info(wlc_hw->d11core,
"wl%d\n", wlc_hw->unit);
for (i = 0; inits[i].addr != cpu_to_le16(0xffff); i++) {
size = le16_to_cpu(inits[i].size);
offset = le16_to_cpu(inits[i].addr);
value = le32_to_cpu(inits[i].value);
if (size == 2)
bcma_write16(core, offset, value);
else if (size == 4)
bcma_write32(core, offset, value);
else
break;
}
}
static void brcms_c_write_mhf(
struct brcms_hardware *wlc_hw, u16 *mhfs)
{
u8 idx;
static const u16 addr[] = {
M_HOST_FLAGS1, M_HOST_FLAGS2, M_HOST_FLAGS3, M_HOST_FLAGS4,
M_HOST_FLAGS5
};
for (idx = 0; idx < MHFMAX; idx++)
brcms_b_write_shm(wlc_hw, addr[idx], mhfs[idx]);
}
static void brcms_c_ucode_bsinit(
struct brcms_hardware *wlc_hw)
{
struct brcms_ucode *ucode = &wlc_hw->wlc->wl->ucode;
/* init microcode host flags */
brcms_c_write_mhf(wlc_hw, wlc_hw->band->mhfs);
/* do band-specific ucode IHR, SHM, and SCR inits */
if (D11REV_IS(wlc_hw->corerev, 17) || D11REV_IS(wlc_hw->corerev, 23)) {
if (BRCMS_ISNPHY(wlc_hw->band))
brcms_c_write_inits(wlc_hw, ucode->d11n0bsinitvals16);
else
brcms_err(wlc_hw->d11core,
"%s: wl%d: unsupported phy in corerev %d\n",
__func__, wlc_hw->unit,
wlc_hw->corerev);
}
else {
if (D11REV_IS(wlc_hw->corerev, 24)) {
if (BRCMS_ISLCNPHY(wlc_hw->band))
brcms_c_write_inits(wlc_hw,
ucode->d11lcn0bsinitvals24);
else
brcms_err(wlc_hw->d11core,
"%s: wl%d: unsupported phy in core rev %d\n",
__func__, wlc_hw->unit,
wlc_hw->corerev);
}
else {
brcms_err(wlc_hw->d11core,
"%s: wl%d: unsupported corerev %d\n",
__func__, wlc_hw->unit, wlc_hw->corerev);
}
}
}
static void brcms_b_core_ioctl(
struct brcms_hardware *wlc_hw, u32 m, u32 v)
{
struct bcma_device *core = wlc_hw->d11core;
u32 ioctl = bcma_aread32(core, BCMA_IOCTL) & ~m;
bcma_awrite32(core, BCMA_IOCTL, ioctl | v);
}
static void brcms_b_core_phy_clk(
struct brcms_hardware *wlc_hw,
bool clk)
{
brcms_dbg_info(wlc_hw->d11core,
"wl%d: clk %d\n", wlc_hw->unit, clk);
wlc_hw->phyclk = clk;
if (OFF == clk) {
/* clear gmode bit, put phy into reset */
brcms_b_core_ioctl(wlc_hw, (SICF_PRST | SICF_FGC | SICF_GMODE),
(SICF_PRST | SICF_FGC));
udelay(1);
brcms_b_core_ioctl(wlc_hw, (SICF_PRST | SICF_FGC), SICF_PRST);
udelay(1);
}
else {
/* take phy out of reset */
brcms_b_core_ioctl(wlc_hw, (SICF_PRST | SICF_FGC), SICF_FGC);
udelay(1);
brcms_b_core_ioctl(wlc_hw, SICF_FGC, 0);
udelay(1);
}
}
/* low-level band switch utility routine */
static void brcms_c_setxband(
struct brcms_hardware *wlc_hw, uint bandunit)
{
brcms_dbg_mac80211(wlc_hw->d11core,
"wl%d: bandunit %d\n", wlc_hw->unit,
bandunit);
wlc_hw->band = wlc_hw->bandstate[bandunit];
/*
* BMAC_NOTE:
* until we eliminate need for wlc->band refs in low level code
*/
wlc_hw->wlc->band = wlc_hw->wlc->bandstate[bandunit];
/* set gmode core flag */
if (wlc_hw->sbclk && !wlc_hw->noreset) {
u32 gmode = 0;
if (bandunit == 0)
gmode = SICF_GMODE;
brcms_b_core_ioctl(wlc_hw, SICF_GMODE, gmode);
}
}
/* switch to new band but leave it inactive */
static u32 brcms_c_setband_inact(
struct brcms_c_info *wlc, uint bandunit)
{
struct brcms_hardware *wlc_hw = wlc->hw;
u32 macintmask;
u32 macctrl;
brcms_dbg_mac80211(wlc_hw->d11core,
"wl%d\n", wlc_hw->unit);
macctrl = bcma_read32(wlc_hw->d11core,
D11REGOFFS(maccontrol));
WARN_ON((macctrl & MCTL_EN_MAC) != 0);
/* disable interrupts */
macintmask = brcms_intrsoff(wlc->wl);
/* radio off */
wlc_phy_switch_radio(wlc_hw->band->pi, OFF);
brcms_b_core_phy_clk(wlc_hw, OFF);
brcms_c_setxband(wlc_hw, bandunit);
return macintmask;
}
/* process an individual struct tx_status */
static bool
brcms_c_dotxstatus(
struct brcms_c_info *wlc,
struct tx_status *txs)
{
struct sk_buff *p = NULL;
uint queue = NFIFO;
struct dma_pub *dma = NULL;
struct d11txh *txh = NULL;
struct scb *scb = NULL;
int tx_frame_count;
uint supr_status;
bool lastframe;
struct ieee80211_hdr *h;
struct ieee80211_tx_info *tx_info;
struct ieee80211_tx_rate *txrate;
int i;
bool fatal =
true;
trace_brcms_txstatus(&wlc->hw->d11core->dev, txs->framelen,
txs->frameid, txs->status, txs->lasttxtime,
txs->sequence, txs->phyerr, txs->ackphyrxsh);
/* discard intermediate indications for ucode with one legitimate case:
* e.g. if "useRTS" is set. ucode did a successful rts/cts exchange,
* but the subsequent tx of DATA failed. so it will start rts/cts
* from the beginning (resetting the rts transmission count)
*/
if (!(txs->status & TX_STATUS_AMPDU)
&& (txs->status & TX_STATUS_INTERMEDIATE)) {
brcms_dbg_tx(wlc->hw->d11core,
"INTERMEDIATE but not AMPDU\n");
fatal =
false;
goto out;
}
queue = txs->frameid & TXFID_QUEUE_MASK;
if (queue >= NFIFO) {
brcms_err(wlc->hw->d11core,
"queue %u >= NFIFO\n", queue);
goto out;
}
dma = wlc->hw->di[queue];
p = dma_getnexttxp(wlc->hw->di[queue], DMA_RANGE_TRANSMITTED);
if (p == NULL) {
brcms_err(wlc->hw->d11core,
"dma_getnexttxp returned null!\n");
goto out;
}
txh = (
struct d11txh *) (p->data);
if (txs->phyerr)
brcms_dbg_tx(wlc->hw->d11core,
"phyerr 0x%x, rate 0x%x\n",
txs->phyerr, txh->MainRates);
if (txs->frameid != le16_to_cpu(txh->TxFrameID)) {
brcms_err(wlc->hw->d11core,
"frameid != txh->TxFrameID\n");
goto out;
}
tx_info = IEEE80211_SKB_CB(p);
h = (
struct ieee80211_hdr *)((u8 *) (txh + 1) + D11_PHY_HDR_LEN);
if (tx_info->rate_driver_data[0])
scb = &wlc->pri_scb;
if (tx_info->flags & IEEE80211_TX_CTL_AMPDU) {
brcms_c_ampdu_dotxstatus(wlc->ampdu, scb, p, txs);
fatal =
false;
goto out;
}
/*
* brcms_c_ampdu_dotxstatus() will trace tx descriptors for AMPDU
* frames; this traces them for the rest.
*/
trace_brcms_txdesc(&wlc->hw->d11core->dev, txh,
sizeof(*txh));
supr_status = txs->status & TX_STATUS_SUPR_MASK;
if (supr_status == TX_STATUS_SUPR_BADCH) {
unsigned xfts = le16_to_cpu(txh->XtraFrameTypes);
brcms_dbg_tx(wlc->hw->d11core,
"Pkt tx suppressed, dest chan %u, current %d\n",
(xfts >> XFTS_CHANNEL_SHIFT) & 0xff,
CHSPEC_CHANNEL(wlc->default_bss->chanspec));
}
tx_frame_count =
(txs->status & TX_STATUS_FRM_RTX_MASK) >> TX_STATUS_FRM_RTX_SHIFT;
lastframe = !ieee80211_has_morefrags(h->frame_control);
if (!lastframe) {
brcms_err(wlc->hw->d11core,
"Not last frame!\n");
}
else {
/*
* Set information to be consumed by Minstrel ht.
*
* The "fallback limit" is the number of tx attempts a given
* MPDU is sent at the "primary" rate. Tx attempts beyond that
* limit are sent at the "secondary" rate.
* A 'short frame' does not exceed RTS threshold.
*/
u16 sfbl,
/* Short Frame Rate Fallback Limit */
lfbl,
/* Long Frame Rate Fallback Limit */
fbl;
if (queue < IEEE80211_NUM_ACS) {
sfbl = GFIELD(wlc->wme_retries[wme_fifo2ac[queue]],
EDCF_SFB);
lfbl = GFIELD(wlc->wme_retries[wme_fifo2ac[queue]],
EDCF_LFB);
}
else {
sfbl = wlc->SFBL;
lfbl = wlc->LFBL;
}
txrate = tx_info->status.rates;
if (txrate[0].flags & IEEE80211_TX_RC_USE_RTS_CTS)
fbl = lfbl;
else
fbl = sfbl;
ieee80211_tx_info_clear_status(tx_info);
if ((tx_frame_count > fbl) && (txrate[1].idx >= 0)) {
/*
* rate selection requested a fallback rate
* and we used it
*/
txrate[0].count = fbl;
txrate[1].count = tx_frame_count - fbl;
}
else {
/*
* rate selection did not request fallback rate, or
* we didn't need it
*/
txrate[0].count = tx_frame_count;
/*
* rc80211_minstrel.c:minstrel_tx_status() expects
* unused rates to be marked with idx = -1
*/
txrate[1].idx = -1;
txrate[1].count = 0;
}
/* clear the rest of the rates */
for (i = 2; i < IEEE80211_TX_MAX_RATES; i++) {
txrate[i].idx = -1;
txrate[i].count = 0;
}
if (txs->status & TX_STATUS_ACK_RCV)
tx_info->flags |= IEEE80211_TX_STAT_ACK;
}
if (lastframe) {
/* remove PLCP & Broadcom tx descriptor header */
skb_pull(p, D11_PHY_HDR_LEN);
skb_pull(p, D11_TXH_LEN);
ieee80211_tx_status_irqsafe(wlc->pub->ieee_hw, p);
}
else {
brcms_err(wlc->hw->d11core,
"%s: Not last frame => not calling tx_status\n",
__func__);
}
fatal =
false;
out:
if (fatal) {
if (txh)
trace_brcms_txdesc(&wlc->hw->d11core->dev, txh,
sizeof(*txh));
brcmu_pkt_buf_free_skb(p);
}
if (dma && queue < NFIFO) {
u16 ac_queue = brcms_fifo_to_ac(queue);
if (dma->txavail > TX_HEADROOM && queue < TX_BCMC_FIFO &&
ieee80211_queue_stopped(wlc->pub->ieee_hw, ac_queue))
ieee80211_wake_queue(wlc->pub->ieee_hw, ac_queue);
dma_kick_tx(dma);
}
return fatal;
}
/* process tx completion events in BMAC
* Return true if more tx status need to be processed. false otherwise.
*/
static bool
brcms_b_txstatus(
struct brcms_hardware *wlc_hw,
bool bound,
bool *fatal)
{
struct bcma_device *core;
struct tx_status txstatus, *txs;
u32 s1, s2;
uint n = 0;
/*
* Param 'max_tx_num' indicates max. # tx status to process before
* break out.
*/
uint max_tx_num = bound ? TXSBND : -1;
txs = &txstatus;
core = wlc_hw->d11core;
*fatal =
false;
while (n < max_tx_num) {
s1 = bcma_read32(core, D11REGOFFS(frmtxstatus));
if (s1 == 0xffffffff) {
brcms_err(core,
"wl%d: %s: dead chip\n", wlc_hw->unit,
__func__);
*fatal =
true;
return false;
}
/* only process when valid */
if (!(s1 & TXS_V))
break;
s2 = bcma_read32(core, D11REGOFFS(frmtxstatus2));
txs->status = s1 & TXS_STATUS_MASK;
txs->frameid = (s1 & TXS_FID_MASK) >> TXS_FID_SHIFT;
txs->sequence = s2 & TXS_SEQ_MASK;
txs->phyerr = (s2 & TXS_PTX_MASK) >> TXS_PTX_SHIFT;
txs->lasttxtime = 0;
*fatal = brcms_c_dotxstatus(wlc_hw->wlc, txs);
if (*fatal)
return false;
n++;
}
return n >= max_tx_num;
}
static void brcms_c_tbtt(
struct brcms_c_info *wlc)
{
if (wlc->bsscfg->type == BRCMS_TYPE_ADHOC)
/*
* DirFrmQ is now valid...defer setting until end
* of ATIM window
*/
wlc->qvalid |= MCMD_DIRFRMQVAL;
}
/* set initial host flags value */
static void
brcms_c_mhfdef(
struct brcms_c_info *wlc, u16 *mhfs, u16 mhf2_init)
{
struct brcms_hardware *wlc_hw = wlc->hw;
memset(mhfs, 0, MHFMAX *
sizeof(u16));
mhfs[MHF2] |= mhf2_init;
/* prohibit use of slowclock on multifunction boards */
if (wlc_hw->boardflags & BFL_NOPLLDOWN)
mhfs[MHF1] |= MHF1_FORCEFASTCLK;
if (BRCMS_ISNPHY(wlc_hw->band) && NREV_LT(wlc_hw->band->phyrev, 2)) {
mhfs[MHF2] |= MHF2_NPHY40MHZ_WAR;
mhfs[MHF1] |= MHF1_IQSWAP_WAR;
}
}
static uint
dmareg(uint direction, uint fifonum)
{
if (direction == DMA_TX)
return offsetof(
struct d11regs, fifo64regs[fifonum].dmaxmt);
return offsetof(
struct d11regs, fifo64regs[fifonum].dmarcv);
}
static bool brcms_b_attach_dmapio(
struct brcms_c_info *wlc, uint j,
bool wme)
{
uint i;
char name[8];
/*
* ucode host flag 2 needed for pio mode, independent of band and fifo
*/
u16 pio_mhf2 = 0;
struct brcms_hardware *wlc_hw = wlc->hw;
uint unit = wlc_hw->unit;
/* name and offsets for dma_attach */
snprintf(name,
sizeof(name),
"wl%d", unit);
if (wlc_hw->di[0] == NULL) {
/* Init FIFOs */
int dma_attach_err = 0;
/*
* FIFO 0
* TX: TX_AC_BK_FIFO (TX AC Background data packets)
* RX: RX_FIFO (RX data packets)
*/
wlc_hw->di[0] = dma_attach(name, wlc,
(wme ? dmareg(DMA_TX, 0) : 0),
dmareg(DMA_RX, 0),
(wme ? NTXD : 0), NRXD,
RXBUFSZ, -1, NRXBUFPOST,
BRCMS_HWRXOFF);
dma_attach_err |= (NULL == wlc_hw->di[0]);
/*
* FIFO 1
* TX: TX_AC_BE_FIFO (TX AC Best-Effort data packets)
* (legacy) TX_DATA_FIFO (TX data packets)
* RX: UNUSED
*/
wlc_hw->di[1] = dma_attach(name, wlc,
dmareg(DMA_TX, 1), 0,
NTXD, 0, 0, -1, 0, 0);
dma_attach_err |= (NULL == wlc_hw->di[1]);
/*
* FIFO 2
* TX: TX_AC_VI_FIFO (TX AC Video data packets)
* RX: UNUSED
*/
wlc_hw->di[2] = dma_attach(name, wlc,
dmareg(DMA_TX, 2), 0,
NTXD, 0, 0, -1, 0, 0);
dma_attach_err |= (NULL == wlc_hw->di[2]);
/*
* FIFO 3
* TX: TX_AC_VO_FIFO (TX AC Voice data packets)
* (legacy) TX_CTL_FIFO (TX control & mgmt packets)
*/
wlc_hw->di[3] = dma_attach(name, wlc,
dmareg(DMA_TX, 3),
0, NTXD, 0, 0, -1,
0, 0);
dma_attach_err |= (NULL == wlc_hw->di[3]);
/* Cleaner to leave this as if with AP defined */
if (dma_attach_err) {
brcms_err(wlc_hw->d11core,
"wl%d: wlc_attach: dma_attach failed\n",
unit);
return false;
}
/* get pointer to dma engine tx flow control variable */
for (i = 0; i < NFIFO; i++)
if (wlc_hw->di[i])
wlc_hw->txavail[i] =
(uint *) dma_getvar(wlc_hw->di[i],
"&txavail");
}
/* initial ucode host flags */
brcms_c_mhfdef(wlc, wlc_hw->band->mhfs, pio_mhf2);
return true;
}
static void brcms_b_detach_dmapio(
struct brcms_hardware *wlc_hw)
{
uint j;
for (j = 0; j < NFIFO; j++) {
if (wlc_hw->di[j]) {
dma_detach(wlc_hw->di[j]);
wlc_hw->di[j] = NULL;
}
}
}
/*
* Initialize brcms_c_info default values ...
* may get overrides later in this function
* BMAC_NOTES, move low out and resolve the dangling ones
*/
static void brcms_b_info_init(
struct brcms_hardware *wlc_hw)
{
struct brcms_c_info *wlc = wlc_hw->wlc;
/* set default sw macintmask value */
wlc->defmacintmask = DEF_MACINTMASK;
/* various 802.11g modes */
wlc_hw->shortslot =
false;
wlc_hw->SFBL = RETRY_SHORT_FB;
wlc_hw->LFBL = RETRY_LONG_FB;
/* default mac retry limits */
wlc_hw->SRL = RETRY_SHORT_DEF;
wlc_hw->LRL = RETRY_LONG_DEF;
wlc_hw->chanspec = ch20mhz_chspec(1);
}
static void brcms_b_wait_for_wake(
struct brcms_hardware *wlc_hw)
{
/* delay before first read of ucode state */
udelay(40);
/* wait until ucode is no longer asleep */
SPINWAIT((brcms_b_read_shm(wlc_hw, M_UCODE_DBGST) ==
DBGST_ASLEEP), wlc_hw->wlc->fastpwrup_dly);
}
/* control chip clock to save power, enable dynamic clock or force fast clock */
static void brcms_b_clkctl_clk(
struct brcms_hardware *wlc_hw,
enum bcma_clkmode mode)
{
if (ai_get_cccaps(wlc_hw->sih) & CC_CAP_PMU) {
/* new chips with PMU, CCS_FORCEHT will distribute the HT clock
* on backplane, but mac core will still run on ALP(not HT) when
* it enters powersave mode, which means the FCA bit may not be
* set. Should wakeup mac if driver wants it to run on HT.
*/
if (wlc_hw->clk) {
if (mode == BCMA_CLKMODE_FAST) {
bcma_set32(wlc_hw->d11core,
D11REGOFFS(clk_ctl_st),
CCS_FORCEHT);
udelay(64);
SPINWAIT(
((bcma_read32(wlc_hw->d11core,
D11REGOFFS(clk_ctl_st)) &
CCS_HTAVAIL) == 0),
PMU_MAX_TRANSITION_DLY);
WARN_ON(!(bcma_read32(wlc_hw->d11core,
D11REGOFFS(clk_ctl_st)) &
CCS_HTAVAIL));
}
else {
if ((ai_get_pmurev(wlc_hw->sih) == 0) &&
(bcma_read32(wlc_hw->d11core,
D11REGOFFS(clk_ctl_st)) &
(CCS_FORCEHT | CCS_HTAREQ)))
SPINWAIT(
((bcma_read32(wlc_hw->d11core,
offsetof(
struct d11regs,
clk_ctl_st)) &
CCS_HTAVAIL) == 0),
PMU_MAX_TRANSITION_DLY);
bcma_mask32(wlc_hw->d11core,
D11REGOFFS(clk_ctl_st),
~CCS_FORCEHT);
}
}
wlc_hw->forcefastclk = (mode == BCMA_CLKMODE_FAST);
}
else {
/* old chips w/o PMU, force HT through cc,
* then use FCA to verify mac is running fast clock
*/
wlc_hw->forcefastclk = ai_clkctl_cc(wlc_hw->sih, mode);
/* check fast clock is available (if core is not in reset) */
if (wlc_hw->forcefastclk && wlc_hw->clk)
WARN_ON(!(bcma_aread32(wlc_hw->d11core, BCMA_IOST) &
SISF_FCLKA));
/*
* keep the ucode wake bit on if forcefastclk is on since we
* do not want ucode to put us back to slow clock when it dozes
* for PM mode. Code below matches the wake override bit with
* current forcefastclk state. Only setting bit in wake_override
* instead of waking ucode immediately since old code had this
* behavior. Older code set wlc->forcefastclk but only had the
* wake happen if the wakup_ucode work (protected by an up
* check) was executed just below.
*/
if (wlc_hw->forcefastclk)
mboolset(wlc_hw->wake_override,
BRCMS_WAKE_OVERRIDE_FORCEFAST);
else
mboolclr(wlc_hw->wake_override,
BRCMS_WAKE_OVERRIDE_FORCEFAST);
}
}
/* set or clear ucode host flag bits
* it has an optimization for no-change write
* it only writes through shared memory when the core has clock;
* pre-CLK changes should use wlc_write_mhf to get around the optimization
*
*
* bands values are: BRCM_BAND_AUTO <--- Current band only
* BRCM_BAND_5G <--- 5G band only
* BRCM_BAND_2G <--- 2G band only
* BRCM_BAND_ALL <--- All bands
*/
void
brcms_b_mhf(
struct brcms_hardware *wlc_hw, u8 idx, u16 mask, u16 val,
int bands)
{
u16 save;
u16 addr[MHFMAX] = {
M_HOST_FLAGS1, M_HOST_FLAGS2, M_HOST_FLAGS3, M_HOST_FLAGS4,
M_HOST_FLAGS5
};
struct brcms_hw_band *band;
if ((val & ~mask) || idx >= MHFMAX)
return;
/* error condition */
switch (bands) {
/* Current band only or all bands,
* then set the band to current band
*/
case BRCM_BAND_AUTO:
case BRCM_BAND_ALL:
band = wlc_hw->band;
break;
case BRCM_BAND_5G:
band = wlc_hw->bandstate[BAND_5G_INDEX];
break;
case BRCM_BAND_2G:
band = wlc_hw->bandstate[BAND_2G_INDEX];
break;
default:
band = NULL;
/* error condition */
}
if (band) {
save = band->mhfs[idx];
band->mhfs[idx] = (band->mhfs[idx] & ~mask) | val;
/* optimization: only write through if changed, and
* changed band is the current band
*/
if (wlc_hw->clk && (band->mhfs[idx] != save)
&& (band == wlc_hw->band))
brcms_b_write_shm(wlc_hw, addr[idx],
(u16) band->mhfs[idx]);
}
if (bands == BRCM_BAND_ALL) {
wlc_hw->bandstate[0]->mhfs[idx] =
(wlc_hw->bandstate[0]->mhfs[idx] & ~mask) | val;
wlc_hw->bandstate[1]->mhfs[idx] =
(wlc_hw->bandstate[1]->mhfs[idx] & ~mask) | val;
}
}
/* set the maccontrol register to desired reset state and
* initialize the sw cache of the register
*/
static void brcms_c_mctrl_reset(
struct brcms_hardware *wlc_hw)
{
/* IHR accesses are always enabled, PSM disabled, HPS off and WAKE on */
wlc_hw->maccontrol = 0;
wlc_hw->suspended_fifos = 0;
wlc_hw->wake_override = 0;
wlc_hw->mute_override = 0;
brcms_b_mctrl(wlc_hw, ~0, MCTL_IHR_EN | MCTL_WAKE);
}
/*
* write the software state of maccontrol and
* overrides to the maccontrol register
*/
static void brcms_c_mctrl_write(
struct brcms_hardware *wlc_hw)
{
u32 maccontrol = wlc_hw->maccontrol;
/* OR in the wake bit if overridden */
if (wlc_hw->wake_override)
maccontrol |= MCTL_WAKE;
/* set AP and INFRA bits for mute if needed */
if (wlc_hw->mute_override) {
maccontrol &= ~(MCTL_AP);
maccontrol |= MCTL_INFRA;
}
bcma_write32(wlc_hw->d11core, D11REGOFFS(maccontrol),
maccontrol);
}
/* set or clear maccontrol bits */
void brcms_b_mctrl(
struct brcms_hardware *wlc_hw, u32 mask, u32 val)
{
u32 maccontrol;
u32 new_maccontrol;
if (val & ~mask)
return;
/* error condition */
maccontrol = wlc_hw->maccontrol;
new_maccontrol = (maccontrol & ~mask) | val;
/* if the new maccontrol value is the same as the old, nothing to do */
if (new_maccontrol == maccontrol)
return;
/* something changed, cache the new value */
wlc_hw->maccontrol = new_maccontrol;
/* write the new values with overrides applied */
brcms_c_mctrl_write(wlc_hw);
}
void brcms_c_ucode_wake_override_set(
struct brcms_hardware *wlc_hw,
u32 override_bit)
{
if (wlc_hw->wake_override || (wlc_hw->maccontrol & MCTL_WAKE)) {
mboolset(wlc_hw->wake_override, override_bit);
return;
}
mboolset(wlc_hw->wake_override, override_bit);
brcms_c_mctrl_write(wlc_hw);
brcms_b_wait_for_wake(wlc_hw);
}
void brcms_c_ucode_wake_override_clear(
struct brcms_hardware *wlc_hw,
u32 override_bit)
{
mboolclr(wlc_hw->wake_override, override_bit);
if (wlc_hw->wake_override || (wlc_hw->maccontrol & MCTL_WAKE))
return;
brcms_c_mctrl_write(wlc_hw);
}
/* When driver needs ucode to stop beaconing, it has to make sure that
* MCTL_AP is clear and MCTL_INFRA is set
* Mode MCTL_AP MCTL_INFRA
* AP 1 1
* STA 0 1 <--- This will ensure no beacons
* IBSS 0 0
*/
static void brcms_c_ucode_mute_override_set(
struct brcms_hardware *wlc_hw)
{
wlc_hw->mute_override = 1;
/* if maccontrol already has AP == 0 and INFRA == 1 without this
* override, then there is no change to write
*/
if ((wlc_hw->maccontrol & (MCTL_AP | MCTL_INFRA)) == MCTL_INFRA)
return;
brcms_c_mctrl_write(wlc_hw);
}
/* Clear the override on AP and INFRA bits */
static void brcms_c_ucode_mute_override_clear(
struct brcms_hardware *wlc_hw)
{
if (wlc_hw->mute_override == 0)
return;
wlc_hw->mute_override = 0;
/* if maccontrol already has AP == 0 and INFRA == 1 without this
* override, then there is no change to write
*/
if ((wlc_hw->maccontrol & (MCTL_AP | MCTL_INFRA)) == MCTL_INFRA)
return;
brcms_c_mctrl_write(wlc_hw);
}
/*
* Write a MAC address to the given match reg offset in the RXE match engine.
*/
static void
brcms_b_set_addrmatch(
struct brcms_hardware *wlc_hw,
int match_reg_offset,
const u8 *addr)
{
struct bcma_device *core = wlc_hw->d11core;
u16 mac_l;
u16 mac_m;
u16 mac_h;
brcms_dbg_rx(core,
"wl%d: brcms_b_set_addrmatch\n", wlc_hw->unit);
mac_l = addr[0] | (addr[1] << 8);
mac_m = addr[2] | (addr[3] << 8);
mac_h = addr[4] | (addr[5] << 8);
/* enter the MAC addr into the RXE match registers */
bcma_write16(core, D11REGOFFS(rcm_ctl),
RCM_INC_DATA | match_reg_offset);
bcma_write16(core, D11REGOFFS(rcm_mat_data), mac_l);
bcma_write16(core, D11REGOFFS(rcm_mat_data), mac_m);
bcma_write16(core, D11REGOFFS(rcm_mat_data), mac_h);
}
void
brcms_b_write_template_ram(
struct brcms_hardware *wlc_hw,
int offset,
int len,
void *buf)
{
struct bcma_device *core = wlc_hw->d11core;
u32 word;
__le32 word_le;
__be32 word_be;
bool be_bit;
brcms_dbg_info(core,
"wl%d\n", wlc_hw->unit);
bcma_write32(core, D11REGOFFS(tplatewrptr), offset);
/* if MCTL_BIGEND bit set in mac control register,
* the chip swaps data in fifo, as well as data in
* template ram
*/
be_bit = (bcma_read32(core, D11REGOFFS(maccontrol)) & MCTL_BIGEND) != 0;
while (len > 0) {
memcpy(&word, buf,
sizeof(u32));
if (be_bit) {
word_be = cpu_to_be32(word);
word = *(u32 *)&word_be;
}
else {
word_le = cpu_to_le32(word);
word = *(u32 *)&word_le;
}
bcma_write32(core, D11REGOFFS(tplatewrdata), word);
buf = (u8 *) buf +
sizeof(u32);
len -=
sizeof(u32);
}
}
static void brcms_b_set_cwmin(
struct brcms_hardware *wlc_hw, u16 newmin)
{
wlc_hw->band->CWmin = newmin;
bcma_write32(wlc_hw->d11core, D11REGOFFS(objaddr),
OBJADDR_SCR_SEL | S_DOT11_CWMIN);
(
void)bcma_read32(wlc_hw->d11core, D11REGOFFS(objaddr));
bcma_write32(wlc_hw->d11core, D11REGOFFS(objdata), newmin);
}
static void brcms_b_set_cwmax(
struct brcms_hardware *wlc_hw, u16 newmax)
{
wlc_hw->band->CWmax = newmax;
bcma_write32(wlc_hw->d11core, D11REGOFFS(objaddr),
OBJADDR_SCR_SEL | S_DOT11_CWMAX);
(
void)bcma_read32(wlc_hw->d11core, D11REGOFFS(objaddr));
bcma_write32(wlc_hw->d11core, D11REGOFFS(objdata), newmax);
}
void brcms_b_bw_set(
struct brcms_hardware *wlc_hw, u16 bw)
{
bool fastclk;
/* request FAST clock if not on */
fastclk = wlc_hw->forcefastclk;
if (!fastclk)
brcms_b_clkctl_clk(wlc_hw, BCMA_CLKMODE_FAST);
wlc_phy_bw_state_set(wlc_hw->band->pi, bw);
brcms_b_phy_reset(wlc_hw);
wlc_phy_init(wlc_hw->band->pi, wlc_phy_chanspec_get(wlc_hw->band->pi));
/* restore the clk */
if (!fastclk)
brcms_b_clkctl_clk(wlc_hw, BCMA_CLKMODE_DYNAMIC);
}
static void brcms_b_upd_synthpu(
struct brcms_hardware *wlc_hw)
{
u16 v;
struct brcms_c_info *wlc = wlc_hw->wlc;
/* update SYNTHPU_DLY */
if (BRCMS_ISLCNPHY(wlc->band))
v = SYNTHPU_DLY_LPPHY_US;
else if (BRCMS_ISNPHY(wlc->band) && (NREV_GE(wlc->band->phyrev, 3)))
v = SYNTHPU_DLY_NPHY_US;
else
v = SYNTHPU_DLY_BPHY_US;
brcms_b_write_shm(wlc_hw, M_SYNTHPU_DLY, v);
}
static void brcms_c_ucode_txant_set(
struct brcms_hardware *wlc_hw)
{
u16 phyctl;
u16 phytxant = wlc_hw->bmac_phytxant;
u16 mask = PHY_TXC_ANT_MASK;
/* set the Probe Response frame phy control word */
phyctl = brcms_b_read_shm(wlc_hw, M_CTXPRS_BLK + C_CTX_PCTLWD_POS);
phyctl = (phyctl & ~mask) | phytxant;
brcms_b_write_shm(wlc_hw, M_CTXPRS_BLK + C_CTX_PCTLWD_POS, phyctl);
/* set the Response (ACK/CTS) frame phy control word */
phyctl = brcms_b_read_shm(wlc_hw, M_RSP_PCTLWD);
phyctl = (phyctl & ~mask) | phytxant;
brcms_b_write_shm(wlc_hw, M_RSP_PCTLWD, phyctl);
}
static u16 brcms_b_ofdm_ratetable_offset(
struct brcms_hardware *wlc_hw,
u8 rate)
{
uint i;
u8 plcp_rate = 0;
struct plcp_signal_rate_lookup {
u8 rate;
u8 signal_rate;
};
/* OFDM RATE sub-field of PLCP SIGNAL field, per 802.11 sec 17.3.4.1 */
const struct plcp_signal_rate_lookup rate_lookup[] = {
{BRCM_RATE_6M, 0xB},
{BRCM_RATE_9M, 0xF},
{BRCM_RATE_12M, 0xA},
{BRCM_RATE_18M, 0xE},
{BRCM_RATE_24M, 0x9},
{BRCM_RATE_36M, 0xD},
{BRCM_RATE_48M, 0x8},
{BRCM_RATE_54M, 0xC}
};
for (i = 0; i < ARRAY_SIZE(rate_lookup); i++) {
if (rate == rate_lookup[i].rate) {
plcp_rate = rate_lookup[i].signal_rate;
break;
}
}
/* Find the SHM pointer to the rate table entry by looking in the
* Direct-map Table
*/
return 2 * brcms_b_read_shm(wlc_hw, M_RT_DIRMAP_A + (plcp_rate * 2));
}
static void brcms_upd_ofdm_pctl1_table(
struct brcms_hardware *wlc_hw)
{
u8 rate;
u8 rates[8] = {
BRCM_RATE_6M, BRCM_RATE_9M, BRCM_RATE_12M, BRCM_RATE_18M,
BRCM_RATE_24M, BRCM_RATE_36M, BRCM_RATE_48M, BRCM_RATE_54M
};
u16 entry_ptr;
u16 pctl1;
uint i;
if (!BRCMS_PHY_11N_CAP(wlc_hw->band))
return;
/* walk the phy rate table and update the entries */
for (i = 0; i < ARRAY_SIZE(rates); i++) {
rate = rates[i];
entry_ptr = brcms_b_ofdm_ratetable_offset(wlc_hw, rate);
/* read the SHM Rate Table entry OFDM PCTL1 values */
pctl1 =
brcms_b_read_shm(wlc_hw, entry_ptr + M_RT_OFDM_PCTL1_POS);
/* modify the value */
pctl1 &= ~PHY_TXC1_MODE_MASK;
pctl1 |= (wlc_hw->hw_stf_ss_opmode << PHY_TXC1_MODE_SHIFT);
/* Update the SHM Rate Table entry OFDM PCTL1 values */
brcms_b_write_shm(wlc_hw, entry_ptr + M_RT_OFDM_PCTL1_POS,
pctl1);
}
}
/* band-specific init */
static void brcms_b_bsinit(
struct brcms_c_info *wlc, u16 chanspec)
{
struct brcms_hardware *wlc_hw = wlc->hw;
brcms_dbg_mac80211(wlc_hw->d11core,
"wl%d: bandunit %d\n", wlc_hw->unit,
wlc_hw->band->bandunit);
brcms_c_ucode_bsinit(wlc_hw);
wlc_phy_init(wlc_hw->band->pi, chanspec);
brcms_c_ucode_txant_set(wlc_hw);
/*
* cwmin is band-specific, update hardware
* with value for current band
*/
brcms_b_set_cwmin(wlc_hw, wlc_hw->band->CWmin);
brcms_b_set_cwmax(wlc_hw, wlc_hw->band->CWmax);
brcms_b_update_slot_timing(wlc_hw,
wlc_hw->band->bandtype == BRCM_BAND_5G ?
true : wlc_hw->shortslot);
/* write phytype and phyvers */
brcms_b_write_shm(wlc_hw, M_PHYTYPE, (u16) wlc_hw->band->phytype);
brcms_b_write_shm(wlc_hw, M_PHYVER, (u16) wlc_hw->band->phyrev);
/*
* initialize the txphyctl1 rate table since
* shmem is shared between bands
*/
brcms_upd_ofdm_pctl1_table(wlc_hw);
brcms_b_upd_synthpu(wlc_hw);
}
/* Perform a soft reset of the PHY PLL */
void brcms_b_core_phypll_reset(
struct brcms_hardware *wlc_hw)
{
ai_cc_reg(wlc_hw->sih, offsetof(
struct chipcregs, chipcontrol_addr),
~0, 0);
udelay(1);
ai_cc_reg(wlc_hw->sih, offsetof(
struct chipcregs, chipcontrol_data),
0x4, 0);
udelay(1);
ai_cc_reg(wlc_hw->sih, offsetof(
struct chipcregs, chipcontrol_data),
0x4, 4);
udelay(1);
ai_cc_reg(wlc_hw->sih, offsetof(
struct chipcregs, chipcontrol_data),
0x4, 0);
udelay(1);
}
/* light way to turn on phy clock without reset for NPHY only
* refer to brcms_b_core_phy_clk for full version
*/
void brcms_b_phyclk_fgc(
struct brcms_hardware *wlc_hw,
bool clk)
{
/* support(necessary for NPHY and HYPHY) only */
if (!BRCMS_ISNPHY(wlc_hw->band))
return;
if (ON == clk)
brcms_b_core_ioctl(wlc_hw, SICF_FGC, SICF_FGC);
else
brcms_b_core_ioctl(wlc_hw, SICF_FGC, 0);
}
void brcms_b_macphyclk_set(
struct brcms_hardware *wlc_hw,
bool clk)
{
if (ON == clk)
brcms_b_core_ioctl(wlc_hw, SICF_MPCLKE, SICF_MPCLKE);
else
brcms_b_core_ioctl(wlc_hw, SICF_MPCLKE, 0);
}
void brcms_b_phy_reset(
struct brcms_hardware *wlc_hw)
{
struct brcms_phy_pub *pih = wlc_hw->band->pi;
u32 phy_bw_clkbits;
brcms_dbg_info(wlc_hw->d11core,
"wl%d: reset phy\n", wlc_hw->unit);
if (pih == NULL)
return;
phy_bw_clkbits = wlc_phy_clk_bwbits(wlc_hw->band->pi);
/* Specific reset sequence required for NPHY rev 3 and 4 */
if (BRCMS_ISNPHY(wlc_hw->band) && NREV_GE(wlc_hw->band->phyrev, 3) &&
NREV_LE(wlc_hw->band->phyrev, 4)) {
/* Set the PHY bandwidth */
brcms_b_core_ioctl(wlc_hw, SICF_BWMASK, phy_bw_clkbits);
udelay(1);
/* Perform a soft reset of the PHY PLL */
brcms_b_core_phypll_reset(wlc_hw);
/* reset the PHY */
brcms_b_core_ioctl(wlc_hw, (SICF_PRST | SICF_PCLKE),
(SICF_PRST | SICF_PCLKE));
}
else {
brcms_b_core_ioctl(wlc_hw,
(SICF_PRST | SICF_PCLKE | SICF_BWMASK),
(SICF_PRST | SICF_PCLKE | phy_bw_clkbits));
}
udelay(2);
brcms_b_core_phy_clk(wlc_hw, ON);
wlc_phy_anacore(pih, ON);
}
/* switch to and initialize new band */
static void brcms_b_setband(
struct brcms_hardware *wlc_hw, uint bandunit,
u16 chanspec) {
struct brcms_c_info *wlc = wlc_hw->wlc;
u32 macintmask;
/* Enable the d11 core before accessing it */
if (!bcma_core_is_enabled(wlc_hw->d11core)) {
bcma_core_enable(wlc_hw->d11core, 0);
brcms_c_mctrl_reset(wlc_hw);
}
macintmask = brcms_c_setband_inact(wlc, bandunit);
if (!wlc_hw->up)
return;
brcms_b_core_phy_clk(wlc_hw, ON);
/* band-specific initializations */
brcms_b_bsinit(wlc, chanspec);
/*
* If there are any pending software interrupt bits,
* then replace these with a harmless nonzero value
* so brcms_c_dpc() will re-enable interrupts when done.
*/
if (wlc->macintstatus)
wlc->macintstatus = MI_DMAINT;
/* restore macintmask */
brcms_intrsrestore(wlc->wl, macintmask);
/* ucode should still be suspended.. */
WARN_ON((bcma_read32(wlc_hw->d11core, D11REGOFFS(maccontrol)) &
MCTL_EN_MAC) != 0);
}
static bool brcms_c_isgoodchip(
struct brcms_hardware *wlc_hw)
{
/* reject unsupported corerev */
if (!CONF_HAS(D11CONF, wlc_hw->corerev)) {
wiphy_err(wlc_hw->wlc->wiphy,
"unsupported core rev %d\n",
wlc_hw->corerev);
return false;
}
return true;
}
/* Validate some board info parameters */
static bool brcms_c_validboardtype(
struct brcms_hardware *wlc_hw)
{
uint boardrev = wlc_hw->boardrev;
/* 4 bits each for board type, major, minor, and tiny version */
uint brt = (boardrev & 0xf000) >> 12;
uint b0 = (boardrev & 0xf00) >> 8;
uint b1 = (boardrev & 0xf0) >> 4;
uint b2 = boardrev & 0xf;
/* voards from other vendors are always considered valid */
if (ai_get_boardvendor(wlc_hw->sih) != PCI_VENDOR_ID_BROADCOM)
return true;
/* do some boardrev sanity checks when boardvendor is Broadcom */
if (boardrev == 0)
return false;
if (boardrev <= 0xff)
return true;
if ((brt > 2) || (brt == 0) || (b0 > 9) || (b0 == 0) || (b1 > 9)
|| (b2 > 9))
return false;
return true;
}
static void brcms_c_get_macaddr(
struct brcms_hardware *wlc_hw, u8 etheraddr[ETH_ALEN])
{
struct ssb_sprom *sprom = &wlc_hw->d11core->bus->sprom;
/* If macaddr exists, use it (Sromrev4, CIS, ...). */
if (!is_zero_ether_addr(sprom->il0mac)) {
memcpy(etheraddr, sprom->il0mac, ETH_ALEN);
return;
}
if (wlc_hw->_nbands > 1)
memcpy(etheraddr, sprom->et1mac, ETH_ALEN);
else
memcpy(etheraddr, sprom->il0mac, ETH_ALEN);
}
/* power both the pll and external oscillator on/off */
static void brcms_b_xtal(
struct brcms_hardware *wlc_hw,
bool want)
{
brcms_dbg_info(wlc_hw->d11core,
"wl%d: want %d\n", wlc_hw->unit, want);
/*
* dont power down if plldown is false or
* we must poll hw radio disable
*/
if (!want && wlc_hw->pllreq)
return;
wlc_hw->sbclk = want;
if (!wlc_hw->sbclk) {
wlc_hw->clk =
false;
if (wlc_hw->band && wlc_hw->band->pi)
wlc_phy_hw_clk_state_upd(wlc_hw->band->pi,
false);
}
}
/*
* Return true if radio is disabled, otherwise false.
* hw radio disable signal is an external pin, users activate it asynchronously
* this function could be called when driver is down and w/o clock
* it operates on different registers depending on corerev and boardflag.
*/
static bool brcms_b_radio_read_hwdisabled(
struct brcms_hardware *wlc_hw)
{
bool v, clk, xtal;
u32 flags = 0;
xtal = wlc_hw->sbclk;
if (!xtal)
brcms_b_xtal(wlc_hw, ON);
/* may need to take core out of reset first */
clk = wlc_hw->clk;
if (!clk) {
/*
* mac no longer enables phyclk automatically when driver
* accesses phyreg throughput mac. This can be skipped since
* only mac reg is accessed below
*/
if (D11REV_GE(wlc_hw->corerev, 18))
flags |= SICF_PCLKE;
/*
* TODO: test suspend/resume
*
* AI chip doesn't restore bar0win2 on
* hibernation/resume, need sw fixup
*/
bcma_core_enable(wlc_hw->d11core, flags);
brcms_c_mctrl_reset(wlc_hw);
}
v = ((bcma_read32(wlc_hw->d11core,
D11REGOFFS(phydebug)) & PDBG_RFD) != 0);
/* put core back into reset */
if (!clk)
bcma_core_disable(wlc_hw->d11core, 0);
if (!xtal)
brcms_b_xtal(wlc_hw, OFF);
return v;
}
static bool wlc_dma_rxreset(
struct brcms_hardware *wlc_hw, uint fifo)
{
struct dma_pub *di = wlc_hw->di[fifo];
return dma_rxreset(di);
}
/* d11 core reset
* ensure fask clock during reset
* reset dma
* reset d11(out of reset)
* reset phy(out of reset)
* clear software macintstatus for fresh new start
* one testing hack wlc_hw->noreset will bypass the d11/phy reset
*/
void brcms_b_corereset(
struct brcms_hardware *wlc_hw, u32 flags)
{
uint i;
bool fastclk;
if (flags == BRCMS_USE_COREFLAGS)
flags = (wlc_hw->band->pi ? wlc_hw->band->core_flags : 0);
brcms_dbg_info(wlc_hw->d11core,
"wl%d: core reset\n", wlc_hw->unit);
/* request FAST clock if not on */
fastclk = wlc_hw->forcefastclk;
if (!fastclk)
brcms_b_clkctl_clk(wlc_hw, BCMA_CLKMODE_FAST);
/* reset the dma engines except first time thru */
if (bcma_core_is_enabled(wlc_hw->d11core)) {
for (i = 0; i < NFIFO; i++)
if ((wlc_hw->di[i]) && (!dma_txreset(wlc_hw->di[i])))
brcms_err(wlc_hw->d11core,
"wl%d: %s: "
"dma_txreset[%d]: cannot stop dma\n",
wlc_hw->unit, __func__, i);
if ((wlc_hw->di[RX_FIFO])
&& (!wlc_dma_rxreset(wlc_hw, RX_FIFO)))
brcms_err(wlc_hw->d11core,
"wl%d: %s: dma_rxreset"
"[%d]: cannot stop dma\n",
wlc_hw->unit, __func__, RX_FIFO);
}
/* if noreset, just stop the psm and return */
if (wlc_hw->noreset) {
wlc_hw->wlc->macintstatus = 0;
/* skip wl_dpc after down */
brcms_b_mctrl(wlc_hw, MCTL_PSM_RUN | MCTL_EN_MAC, 0);
return;
}
/*
* mac no longer enables phyclk automatically when driver accesses
* phyreg throughput mac, AND phy_reset is skipped at early stage when
* band->pi is invalid. need to enable PHY CLK
*/
if (D11REV_GE(wlc_hw->corerev, 18))
flags |= SICF_PCLKE;
/*
* reset the core
* In chips with PMU, the fastclk request goes through d11 core
* reg 0x1e0, which is cleared by the core_reset. have to re-request it.
*
* This adds some delay and we can optimize it by also requesting
* fastclk through chipcommon during this period if necessary. But
* that has to work coordinate with other driver like mips/arm since
* they may touch chipcommon as well.
*/
wlc_hw->clk =
false;
bcma_core_enable(wlc_hw->d11core, flags);
wlc_hw->clk =
true;
if (wlc_hw->band && wlc_hw->band->pi)
wlc_phy_hw_clk_state_upd(wlc_hw->band->pi,
true);
brcms_c_mctrl_reset(wlc_hw);
if (ai_get_cccaps(wlc_hw->sih) & CC_CAP_PMU)
brcms_b_clkctl_clk(wlc_hw, BCMA_CLKMODE_FAST);
brcms_b_phy_reset(wlc_hw);
/* turn on PHY_PLL */
brcms_b_core_phypll_ctl(wlc_hw,
true);
/* clear sw intstatus */
wlc_hw->wlc->macintstatus = 0;
/* restore the clk setting */
if (!fastclk)
brcms_b_clkctl_clk(wlc_hw, BCMA_CLKMODE_DYNAMIC);
}
/* txfifo sizes needs to be modified(increased) since the newer cores
* have more memory.
*/
static void brcms_b_corerev_fifofixup(
struct brcms_hardware *wlc_hw)
{
struct bcma_device *core = wlc_hw->d11core;
u16 fifo_nu;
u16 txfifo_startblk = TXFIFO_START_BLK, txfifo_endblk;
u16 txfifo_def, txfifo_def1;
u16 txfifo_cmd;
/* tx fifos start at TXFIFO_START_BLK from the Base address */
txfifo_startblk = TXFIFO_START_BLK;
/* sequence of operations: reset fifo, set fifo size, reset fifo */
for (fifo_nu = 0; fifo_nu < NFIFO; fifo_nu++) {
txfifo_endblk = txfifo_startblk + wlc_hw->xmtfifo_sz[fifo_nu];
txfifo_def = (txfifo_startblk & 0xff) |
(((txfifo_endblk - 1) & 0xff) << TXFIFO_FIFOTOP_SHIFT);
txfifo_def1 = ((txfifo_startblk >> 8) & 0x1) |
((((txfifo_endblk -
1) >> 8) & 0x1) << TXFIFO_FIFOTOP_SHIFT);
txfifo_cmd =
TXFIFOCMD_RESET_MASK | (fifo_nu << TXFIFOCMD_FIFOSEL_SHIFT);
bcma_write16(core, D11REGOFFS(xmtfifocmd), txfifo_cmd);
bcma_write16(core, D11REGOFFS(xmtfifodef), txfifo_def);
bcma_write16(core, D11REGOFFS(xmtfifodef1), txfifo_def1);
bcma_write16(core, D11REGOFFS(xmtfifocmd), txfifo_cmd);
txfifo_startblk += wlc_hw->xmtfifo_sz[fifo_nu];
}
/*
* need to propagate to shm location to be in sync since ucode/hw won't
* do this
*/
brcms_b_write_shm(wlc_hw, M_FIFOSIZE0,
wlc_hw->xmtfifo_sz[TX_AC_BE_FIFO]);
brcms_b_write_shm(wlc_hw, M_FIFOSIZE1,
wlc_hw->xmtfifo_sz[TX_AC_VI_FIFO]);
brcms_b_write_shm(wlc_hw, M_FIFOSIZE2,
((wlc_hw->xmtfifo_sz[TX_AC_VO_FIFO] << 8) | wlc_hw->
xmtfifo_sz[TX_AC_BK_FIFO]));
brcms_b_write_shm(wlc_hw, M_FIFOSIZE3,
((wlc_hw->xmtfifo_sz[TX_ATIM_FIFO] << 8) | wlc_hw->
xmtfifo_sz[TX_BCMC_FIFO]));
}
/* This function is used for changing the tsf frac register
* If spur avoidance mode is off, the mac freq will be 80/120/160Mhz
* If spur avoidance mode is on1, the mac freq will be 82/123/164Mhz
* If spur avoidance mode is on2, the mac freq will be 84/126/168Mhz
* HTPHY Formula is 2^26/freq(MHz) e.g.
* For spuron2 - 126MHz -> 2^26/126 = 532610.0
* - 532610 = 0x82082 => tsf_clk_frac_h = 0x8, tsf_clk_frac_l = 0x2082
* For spuron: 123MHz -> 2^26/123 = 545600.5
* - 545601 = 0x85341 => tsf_clk_frac_h = 0x8, tsf_clk_frac_l = 0x5341
* For spur off: 120MHz -> 2^26/120 = 559240.5
* - 559241 = 0x88889 => tsf_clk_frac_h = 0x8, tsf_clk_frac_l = 0x8889
*/
void brcms_b_switch_macfreq(
struct brcms_hardware *wlc_hw, u8 spurmode)
{
struct bcma_device *core = wlc_hw->d11core;
if ((ai_get_chip_id(wlc_hw->sih) == BCMA_CHIP_ID_BCM43224) ||
(ai_get_chip_id(wlc_hw->sih) == BCMA_CHIP_ID_BCM43225)) {
if (spurmode == WL_SPURAVOID_ON2) {
/* 126Mhz */
bcma_write16(core, D11REGOFFS(tsf_clk_frac_l), 0x2082);
bcma_write16(core, D11REGOFFS(tsf_clk_frac_h), 0x8);
}
else if (spurmode == WL_SPURAVOID_ON1) {
/* 123Mhz */
bcma_write16(core, D11REGOFFS(tsf_clk_frac_l), 0x5341);
bcma_write16(core, D11REGOFFS(tsf_clk_frac_h), 0x8);
}
else {
/* 120Mhz */
bcma_write16(core, D11REGOFFS(tsf_clk_frac_l), 0x8889);
bcma_write16(core, D11REGOFFS(tsf_clk_frac_h), 0x8);
}
}
else if (BRCMS_ISLCNPHY(wlc_hw->band)) {
if (spurmode == WL_SPURAVOID_ON1) {
/* 82Mhz */
bcma_write16(core, D11REGOFFS(tsf_clk_frac_l), 0x7CE0);
bcma_write16(core, D11REGOFFS(tsf_clk_frac_h), 0xC);
}
else {
/* 80Mhz */
bcma_write16(core, D11REGOFFS(tsf_clk_frac_l), 0xCCCD);
bcma_write16(core, D11REGOFFS(tsf_clk_frac_h), 0xC);
}
}
}
void brcms_c_start_station(
struct brcms_c_info *wlc, u8 *addr)
{
memcpy(wlc->pub->cur_etheraddr, addr,
sizeof(wlc->pub->cur_etheraddr));
wlc->bsscfg->type = BRCMS_TYPE_STATION;
}
void brcms_c_start_ap(
struct brcms_c_info *wlc, u8 *addr,
const u8 *bssid,
u8 *ssid, size_t ssid_len)
{
brcms_c_set_ssid(wlc, ssid, ssid_len);
memcpy(wlc->pub->cur_etheraddr, addr,
sizeof(wlc->pub->cur_etheraddr));
memcpy(wlc->bsscfg->BSSID, bssid,
sizeof(wlc->bsscfg->BSSID));
wlc->bsscfg->type = BRCMS_TYPE_AP;
brcms_b_mctrl(wlc->hw, MCTL_AP | MCTL_INFRA, MCTL_AP | MCTL_INFRA);
}
void brcms_c_start_adhoc(
struct brcms_c_info *wlc, u8 *addr)
{
memcpy(wlc->pub->cur_etheraddr, addr,
sizeof(wlc->pub->cur_etheraddr));
wlc->bsscfg->type = BRCMS_TYPE_ADHOC;
brcms_b_mctrl(wlc->hw, MCTL_AP | MCTL_INFRA, 0);
}
/* Initialize GPIOs that are controlled by D11 core */
static void brcms_c_gpio_init(
struct brcms_c_info *wlc)
{
struct brcms_hardware *wlc_hw = wlc->hw;
u32 gc, gm;
/* use GPIO select 0 to get all gpio signals from the gpio out reg */
brcms_b_mctrl(wlc_hw, MCTL_GPOUT_SEL_MASK, 0);
/*
* Common GPIO setup:
* G0 = LED 0 = WLAN Activity
* G1 = LED 1 = WLAN 2.4 GHz Radio State
* G2 = LED 2 = WLAN 5 GHz Radio State
* G4 = radio disable input (HI enabled, LO disabled)
*/
gc = gm = 0;
/* Allocate GPIOs for mimo antenna diversity feature */
if (wlc_hw->antsel_type == ANTSEL_2x3) {
/* Enable antenna diversity, use 2x3 mode */
brcms_b_mhf(wlc_hw, MHF3, MHF3_ANTSEL_EN,
MHF3_ANTSEL_EN, BRCM_BAND_ALL);
brcms_b_mhf(wlc_hw, MHF3, MHF3_ANTSEL_MODE,
MHF3_ANTSEL_MODE, BRCM_BAND_ALL);
/* init superswitch control */
wlc_phy_antsel_init(wlc_hw->band->pi,
false);
}
else if (wlc_hw->antsel_type == ANTSEL_2x4) {
gm |= gc |= (BOARD_GPIO_12 | BOARD_GPIO_13);
/*
* The board itself is powered by these GPIOs
* (when not sending pattern) so set them high
*/
bcma_set16(wlc_hw->d11core, D11REGOFFS(psm_gpio_oe),
(BOARD_GPIO_12 | BOARD_GPIO_13));
bcma_set16(wlc_hw->d11core, D11REGOFFS(psm_gpio_out),
(BOARD_GPIO_12 | BOARD_GPIO_13));
/* Enable antenna diversity, use 2x4 mode */
brcms_b_mhf(wlc_hw, MHF3, MHF3_ANTSEL_EN,
MHF3_ANTSEL_EN, BRCM_BAND_ALL);
brcms_b_mhf(wlc_hw, MHF3, MHF3_ANTSEL_MODE, 0,
BRCM_BAND_ALL);
/* Configure the desired clock to be 4Mhz */
brcms_b_write_shm(wlc_hw, M_ANTSEL_CLKDIV,
ANTSEL_CLKDIV_4MHZ);
}
/*
* gpio 9 controls the PA. ucode is responsible
* for wiggling out and oe
*/
if (wlc_hw->boardflags & BFL_PACTRL)
gm |= gc |= BOARD_GPIO_PACTRL;
/* apply to gpiocontrol register */
bcma_chipco_gpio_control(&wlc_hw->d11core->bus->drv_cc, gm, gc);
}
static void brcms_ucode_write(
struct brcms_hardware *wlc_hw,
const __le32 ucode[],
const size_t nbytes)
{
struct bcma_device *core = wlc_hw->d11core;
uint i;
uint count;
brcms_dbg_info(wlc_hw->d11core,
"wl%d\n", wlc_hw->unit);
count = (nbytes /
sizeof(u32));
bcma_write32(core, D11REGOFFS(objaddr),
OBJADDR_AUTO_INC | OBJADDR_UCM_SEL);
(
void)bcma_read32(core, D11REGOFFS(objaddr));
for (i = 0; i < count; i++)
bcma_write32(core, D11REGOFFS(objdata), le32_to_cpu(ucode[i]));
}
static void brcms_ucode_download(
struct brcms_hardware *wlc_hw)
{
struct brcms_ucode *ucode = &wlc_hw->wlc->wl->ucode;
if (wlc_hw->ucode_loaded)
return;
if (D11REV_IS(wlc_hw->corerev, 17) || D11REV_IS(wlc_hw->corerev, 23)) {
if (BRCMS_ISNPHY(wlc_hw->band)) {
brcms_ucode_write(wlc_hw, ucode->bcm43xx_16_mimo,
ucode->bcm43xx_16_mimosz);
wlc_hw->ucode_loaded =
true;
}
else
brcms_err(wlc_hw->d11core,
"%s: wl%d: unsupported phy in corerev %d\n",
__func__, wlc_hw->unit, wlc_hw->corerev);
}
else if (D11REV_IS(wlc_hw->corerev, 24)) {
if (BRCMS_ISLCNPHY(wlc_hw->band)) {
brcms_ucode_write(wlc_hw, ucode->bcm43xx_24_lcn,
ucode->bcm43xx_24_lcnsz);
wlc_hw->ucode_loaded =
true;
}
else {
brcms_err(wlc_hw->d11core,
"%s: wl%d: unsupported phy in corerev %d\n",
__func__, wlc_hw->unit, wlc_hw->corerev);
}
}
}
void brcms_b_txant_set(
struct brcms_hardware *wlc_hw, u16 phytxant)
{
/* update sw state */
wlc_hw->bmac_phytxant = phytxant;
/* push to ucode if up */
if (!wlc_hw->up)
return;
brcms_c_ucode_txant_set(wlc_hw);
}
u16 brcms_b_get_txant(
struct brcms_hardware *wlc_hw)
{
return (u16) wlc_hw->wlc->stf->txant;
}
void brcms_b_antsel_type_set(
struct brcms_hardware *wlc_hw, u8 antsel_type)
{
wlc_hw->antsel_type = antsel_type;
/* Update the antsel type for phy module to use */
wlc_phy_antsel_type_set(wlc_hw->band->pi, antsel_type);
}
static void brcms_b_fifoerrors(
struct brcms_hardware *wlc_hw)
{
bool fatal =
false;
uint unit;
uint intstatus, idx;
struct bcma_device *core = wlc_hw->d11core;
unit = wlc_hw->unit;
for (idx = 0; idx < NFIFO; idx++) {
/* read intstatus register and ignore any non-error bits */
intstatus =
bcma_read32(core,
D11REGOFFS(intctrlregs[idx].intstatus)) &
I_ERRORS;
if (!intstatus)
continue;
brcms_dbg_int(core,
"wl%d: intstatus%d 0x%x\n",
unit, idx, intstatus);
if (intstatus & I_RO) {
brcms_err(core,
"wl%d: fifo %d: receive fifo "
"overflow\n", unit, idx);
fatal =
true;
}
if (intstatus & I_PC) {
brcms_err(core,
"wl%d: fifo %d: descriptor error\n",
unit, idx);
fatal =
true;
}
if (intstatus & I_PD) {
brcms_err(core,
"wl%d: fifo %d: data error\n", unit,
idx);
fatal =
true;
}
if (intstatus & I_DE) {
brcms_err(core,
"wl%d: fifo %d: descriptor protocol "
"error\n", unit, idx);
fatal =
true;
}
if (intstatus & I_RU)
brcms_err(core,
"wl%d: fifo %d: receive descriptor "
"underflow\n", idx, unit);
if (intstatus & I_XU) {
brcms_err(core,
"wl%d: fifo %d: transmit fifo "
"underflow\n", idx, unit);
fatal =
true;
}
if (fatal) {
brcms_fatal_error(wlc_hw->wlc->wl);
/* big hammer */
break;
}
else
bcma_write32(core,
D11REGOFFS(intctrlregs[idx].intstatus),
intstatus);
}
}
void brcms_c_intrson(
struct brcms_c_info *wlc)
{
struct brcms_hardware *wlc_hw = wlc->hw;
wlc->macintmask = wlc->defmacintmask;
bcma_write32(wlc_hw->d11core, D11REGOFFS(macintmask), wlc->macintmask);
}
u32 brcms_c_intrsoff(
struct brcms_c_info *wlc)
{
struct brcms_hardware *wlc_hw = wlc->hw;
u32 macintmask;
if (!wlc_hw->clk)
return 0;
macintmask = wlc->macintmask;
/* isr can still happen */
bcma_write32(wlc_hw->d11core, D11REGOFFS(macintmask), 0);
(
void)bcma_read32(wlc_hw->d11core, D11REGOFFS(macintmask));
udelay(1);
/* ensure int line is no longer driven */
wlc->macintmask = 0;
/* return previous macintmask; resolve race between us and our isr */
return wlc->macintstatus ? 0 : macintmask;
}
void brcms_c_intrsrestore(
struct brcms_c_info *wlc, u32 macintmask)
{
struct brcms_hardware *wlc_hw = wlc->hw;
if (!wlc_hw->clk)
return;
wlc->macintmask = macintmask;
bcma_write32(wlc_hw->d11core, D11REGOFFS(macintmask), wlc->macintmask);
}
/* assumes that the d11 MAC is enabled */
static void brcms_b_tx_fifo_suspend(
struct brcms_hardware *wlc_hw,
uint tx_fifo)
{
u8 fifo = 1 << tx_fifo;
/* Two clients of this code, 11h Quiet period and scanning. */
/* only suspend if not already suspended */
if ((wlc_hw->suspended_fifos & fifo) == fifo)
return;
/* force the core awake only if not already */
if (wlc_hw->suspended_fifos == 0)
brcms_c_ucode_wake_override_set(wlc_hw,
BRCMS_WAKE_OVERRIDE_TXFIFO);
wlc_hw->suspended_fifos |= fifo;
if (wlc_hw->di[tx_fifo]) {
/*
* Suspending AMPDU transmissions in the middle can cause
* underflow which may result in mismatch between ucode and
--> --------------------
--> maximum size reached
--> --------------------
