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kunit / linux / refs/heads/gcov/v3.1/gcov-works / . / drivers / staging / brcm80211 / brcmsmac / bmac.c
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/*
* Copyright (c) 2010 Broadcom Corporation
*
* 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.
*/
#include <linux/pci.h>
#include <net/mac80211.h>
#include <brcm_hw_ids.h>
#include <aiutils.h>
#include <chipcommon.h>
#include "types.h"
#include "rate.h"
#include "phy/phy_hal.h"
#include "channel.h"
#include "main.h"
#include "ucode_loader.h"
#include "mac80211_if.h"
#include "bmac.h"
#define TIMER_INTERVAL_WATCHDOG_BMAC 1000 /* watchdog timer, in unit of ms */
#define SYNTHPU_DLY_APHY_US 3700 /* a phy synthpu_dly time in us */
#define SYNTHPU_DLY_BPHY_US 1050 /* b/g phy synthpu_dly time in us, default */
#define SYNTHPU_DLY_NPHY_US 2048 /* n phy REV3 synthpu_dly time in us, default */
#define SYNTHPU_DLY_LPPHY_US 300 /* lpphy synthpu_dly time in us */
#define SYNTHPU_DLY_PHY_US_QT 100 /* QT synthpu_dly time in us */
#ifndef BMAC_DUP_TO_REMOVE
#define ANTCNT 10 /* vanilla M_MAX_ANTCNT value */
#endif /* BMAC_DUP_TO_REMOVE */
#define DMAREG(wlc_hw, direction, fifonum) \
((direction == DMA_TX) ? \
(void *)&(wlc_hw->regs->fifo64regs[fifonum].dmaxmt) : \
(void *)&(wlc_hw->regs->fifo64regs[fifonum].dmarcv))
#define APHY_SLOT_TIME 9
#define BPHY_SLOT_TIME 20
/*
* 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.
*/
#define XMTFIFOTBL_STARTREV 20 /* Starting corerev for the fifo size table */
static u16 xmtfifo_sz[][NFIFO] = {
{20, 192, 192, 21, 17, 5}, /* corerev 20: 5120, 49152, 49152, 5376, 4352, 1280 */
{9, 58, 22, 14, 14, 5}, /* corerev 21: 2304, 14848, 5632, 3584, 3584, 1280 */
{20, 192, 192, 21, 17, 5}, /* corerev 22: 5120, 49152, 49152, 5376, 4352, 1280 */
{20, 192, 192, 21, 17, 5}, /* corerev 23: 5120, 49152, 49152, 5376, 4352, 1280 */
{9, 58, 22, 14, 14, 5}, /* corerev 24: 2304, 14848, 5632, 3584, 3584, 1280 */
};
static void brcms_b_clkctl_clk(struct brcms_hardware *wlc, uint mode);
static void brcms_b_coreinit(struct brcms_c_info *wlc);
/* used by wlc_wakeucode_init() */
static void brcms_c_write_inits(struct brcms_hardware *wlc_hw,
const struct d11init *inits);
static void brcms_ucode_write(struct brcms_hardware *wlc_hw, const u32 ucode[],
const uint nbytes);
static void brcms_ucode_download(struct brcms_hardware *wlc);
static void brcms_c_ucode_txant_set(struct brcms_hardware *wlc_hw);
/* used by brcms_c_dpc() */
static bool brcms_b_dotxstatus(struct brcms_hardware *wlc,
struct tx_status *txs, u32 s2);
static bool brcms_b_txstatus(struct brcms_hardware *wlc, bool bound,
bool *fatal);
static bool brcms_b_recv(struct brcms_hardware *wlc_hw, uint fifo, bool bound);
/* used by brcms_c_down() */
static void brcms_c_flushqueues(struct brcms_c_info *wlc);
static void brcms_c_write_mhf(struct brcms_hardware *wlc_hw, u16 *mhfs);
static void brcms_c_mctrl_reset(struct brcms_hardware *wlc_hw);
static void brcms_b_corerev_fifofixup(struct brcms_hardware *wlc_hw);
static bool brcms_b_tx_fifo_suspended(struct brcms_hardware *wlc_hw,
uint tx_fifo);
static void brcms_b_tx_fifo_suspend(struct brcms_hardware *wlc_hw,
uint tx_fifo);
static void brcms_b_tx_fifo_resume(struct brcms_hardware *wlc_hw,
uint tx_fifo);
/* Low Level Prototypes */
static int brcms_b_bandtype(struct brcms_hardware *wlc_hw);
static void brcms_b_info_init(struct brcms_hardware *wlc_hw);
static void brcms_b_xtal(struct brcms_hardware *wlc_hw, bool want);
static u16 brcms_b_read_objmem(struct brcms_hardware *wlc_hw, uint offset,
u32 sel);
static void brcms_b_write_objmem(struct brcms_hardware *wlc_hw, uint offset,
u16 v, u32 sel);
static void brcms_b_core_phy_clk(struct brcms_hardware *wlc_hw, bool clk);
static bool brcms_b_attach_dmapio(struct brcms_c_info *wlc, uint j, bool wme);
static void brcms_b_detach_dmapio(struct brcms_hardware *wlc_hw);
static void brcms_c_ucode_bsinit(struct brcms_hardware *wlc_hw);
static bool brcms_c_validboardtype(struct brcms_hardware *wlc);
static bool brcms_c_isgoodchip(struct brcms_hardware *wlc_hw);
static bool brcms_b_validate_chip_access(struct brcms_hardware *wlc_hw);
static char *brcms_c_get_macaddr(struct brcms_hardware *wlc_hw);
static void brcms_c_mhfdef(struct brcms_c_info *wlc, u16 *mhfs, u16 mhf2_init);
static void brcms_c_mctrl_write(struct brcms_hardware *wlc_hw);
static void brcms_b_mute(struct brcms_hardware *wlc_hw, bool want,
mbool flags);
static void brcms_c_ucode_mute_override_set(struct brcms_hardware *wlc_hw);
static void brcms_c_ucode_mute_override_clear(struct brcms_hardware *wlc_hw);
static u32 brcms_c_wlintrsoff(struct brcms_c_info *wlc);
static void brcms_c_wlintrsrestore(struct brcms_c_info *wlc, u32 macintmask);
static void brcms_c_gpio_init(struct brcms_c_info *wlc);
static void brcms_c_write_hw_bcntemplate0(struct brcms_hardware *wlc_hw,
void *bcn, int len);
static void brcms_c_write_hw_bcntemplate1(struct brcms_hardware *wlc_hw,
void *bcn, int len);
static void brcms_b_bsinit(struct brcms_c_info *wlc, chanspec_t chanspec);
static u32 brcms_c_setband_inact(struct brcms_c_info *wlc, uint bandunit);
static void brcms_b_setband(struct brcms_hardware *wlc_hw, uint bandunit,
chanspec_t chanspec);
static void brcms_b_update_slot_timing(struct brcms_hardware *wlc_hw,
bool shortslot);
static void brcms_upd_ofdm_pctl1_table(struct brcms_hardware *wlc_hw);
static u16 brcms_b_ofdm_ratetable_offset(struct brcms_hardware *wlc_hw,
u8 rate);
/* === Low Level functions === */
void brcms_b_set_shortslot(struct brcms_hardware *wlc_hw, bool shortslot)
{
wlc_hw->shortslot = shortslot;
if (BAND_2G(brcms_b_bandtype(wlc_hw)) && wlc_hw->up) {
brcms_c_suspend_mac_and_wait(wlc_hw->wlc);
brcms_b_update_slot_timing(wlc_hw, shortslot);
brcms_c_enable_mac(wlc_hw->wlc);
}
}
/*
* 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)
{
d11regs_t *regs;
regs = wlc_hw->regs;
if (shortslot) {
/* 11g short slot: 11a timing */
W_REG(&regs->ifs_slot, 0x0207); /* APHY_SLOT_TIME */
brcms_b_write_shm(wlc_hw, M_DOT11_SLOT, APHY_SLOT_TIME);
} else {
/* 11g long slot: 11b timing */
W_REG(&regs->ifs_slot, 0x0212); /* BPHY_SLOT_TIME */
brcms_b_write_shm(wlc_hw, M_DOT11_SLOT, BPHY_SLOT_TIME);
}
}
static void brcms_c_ucode_bsinit(struct brcms_hardware *wlc_hw)
{
struct wiphy *wiphy = wlc_hw->wlc->wiphy;
/* 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, 23)) {
if (BRCMS_ISNPHY(wlc_hw->band)) {
brcms_c_write_inits(wlc_hw, d11n0bsinitvals16);
} else {
wiphy_err(wiphy, "%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,
d11lcn0bsinitvals24);
} else
wiphy_err(wiphy, "%s: wl%d: unsupported phy in"
" core rev %d\n", __func__,
wlc_hw->unit, wlc_hw->corerev);
} else {
wiphy_err(wiphy, "%s: wl%d: unsupported corerev %d\n",
__func__, wlc_hw->unit, wlc_hw->corerev);
}
}
}
/* 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;
BCMMSG(wlc->wiphy, "wl%d\n", wlc_hw->unit);
WARN_ON((R_REG(&wlc_hw->regs->maccontrol) & 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 received frames */
/*
* Return true if more frames need to be processed. false otherwise.
* Param 'bound' indicates max. # frames to process before break out.
*/
static bool
brcms_b_recv(struct brcms_hardware *wlc_hw, uint fifo, bool bound)
{
struct sk_buff *p;
struct sk_buff *head = NULL;
struct sk_buff *tail = NULL;
uint n = 0;
uint bound_limit = bound ? wlc_hw->wlc->pub->tunables->rxbnd : -1;
struct brcms_d11rxhdr *wlc_rxhdr = NULL;
BCMMSG(wlc_hw->wlc->wiphy, "wl%d\n", wlc_hw->unit);
/* gather received frames */
while ((p = dma_rx(wlc_hw->di[fifo]))) {
if (!tail)
head = tail = p;
else {
tail->prev = p;
tail = p;
}
/* !give others some time to run! */
if (++n >= bound_limit)
break;
}
/* post more rbufs */
dma_rxfill(wlc_hw->di[fifo]);
/* process each frame */
while ((p = head) != NULL) {
head = head->prev;
p->prev = NULL;
wlc_rxhdr = (struct brcms_d11rxhdr *) p->data;
/* compute the RSSI from d11rxhdr and record it in wlc_rxd11hr */
wlc_phy_rssi_compute(wlc_hw->band->pi, wlc_rxhdr);
brcms_c_recv(wlc_hw->wlc, p);
}
return n >= bound_limit;
}
/* second-level interrupt processing
* Return true if another dpc needs to be re-scheduled. false otherwise.
* Param 'bounded' indicates if applicable loops should be bounded.
*/
bool brcms_c_dpc(struct brcms_c_info *wlc, bool bounded)
{
u32 macintstatus;
struct brcms_hardware *wlc_hw = wlc->hw;
d11regs_t *regs = wlc_hw->regs;
bool fatal = false;
struct wiphy *wiphy = wlc->wiphy;
if (DEVICEREMOVED(wlc)) {
wiphy_err(wiphy, "wl%d: %s: dead chip\n", wlc_hw->unit,
__func__);
brcms_down(wlc->wl);
return false;
}
/* grab and clear the saved software intstatus bits */
macintstatus = wlc->macintstatus;
wlc->macintstatus = 0;
BCMMSG(wlc->wiphy, "wl%d: macintstatus 0x%x\n",
wlc_hw->unit, macintstatus);
WARN_ON(macintstatus & MI_PRQ); /* PRQ Interrupt in non-MBSS */
/* BCN template is available */
/* ZZZ: Use AP_ACTIVE ? */
if (AP_ENAB(wlc->pub) && (!APSTA_ENAB(wlc->pub))
&& (macintstatus & MI_BCNTPL)) {
brcms_c_update_beacon(wlc);
}
/* tx status */
if (macintstatus & MI_TFS) {
if (brcms_b_txstatus(wlc->hw, bounded, &fatal))
wlc->macintstatus |= MI_TFS;
if (fatal) {
wiphy_err(wiphy, "MI_TFS: fatal\n");
goto fatal;
}
}
if (macintstatus & (MI_TBTT | MI_DTIM_TBTT))
brcms_c_tbtt(wlc);
/* ATIM window end */
if (macintstatus & MI_ATIMWINEND) {
BCMMSG(wlc->wiphy, "end of ATIM window\n");
OR_REG(&regs->maccommand, wlc->qvalid);
wlc->qvalid = 0;
}
/* received data or control frame, MI_DMAINT is indication of RX_FIFO interrupt */
if (macintstatus & MI_DMAINT)
if (brcms_b_recv(wlc_hw, RX_FIFO, bounded))
wlc->macintstatus |= MI_DMAINT;
/* TX FIFO suspend/flush completion */
if (macintstatus & MI_TXSTOP)
brcms_b_tx_fifo_suspended(wlc_hw, TX_DATA_FIFO);
/* noise sample collected */
if (macintstatus & MI_BG_NOISE) {
wlc_phy_noise_sample_intr(wlc_hw->band->pi);
}
if (macintstatus & MI_GP0) {
wiphy_err(wiphy, "wl%d: PSM microcode watchdog fired at %d "
"(seconds). Resetting.\n", wlc_hw->unit, wlc_hw->now);
printk_once("%s : PSM Watchdog, chipid 0x%x, chiprev 0x%x\n",
__func__, wlc_hw->sih->chip,
wlc_hw->sih->chiprev);
/* big hammer */
brcms_init(wlc->wl);
}
/* gptimer timeout */
if (macintstatus & MI_TO) {
W_REG(&regs->gptimer, 0);
}
if (macintstatus & MI_RFDISABLE) {
BCMMSG(wlc->wiphy, "wl%d: BMAC Detected a change on the"
" RF Disable Input\n", wlc_hw->unit);
brcms_rfkill_set_hw_state(wlc->wl);
}
/* send any enq'd tx packets. Just makes sure to jump start tx */
if (!pktq_empty(&wlc->pkt_queue->q))
brcms_c_send_q(wlc);
/* it isn't done and needs to be resched if macintstatus is non-zero */
return wlc->macintstatus != 0;
fatal:
brcms_init(wlc->wl);
return wlc->macintstatus != 0;
}
/* common low-level watchdog code */
void brcms_b_watchdog(void *arg)
{
struct brcms_c_info *wlc = (struct brcms_c_info *) arg;
struct brcms_hardware *wlc_hw = wlc->hw;
BCMMSG(wlc->wiphy, "wl%d\n", wlc_hw->unit);
if (!wlc_hw->up)
return;
/* increment second count */
wlc_hw->now++;
/* Check for FIFO error interrupts */
brcms_b_fifoerrors(wlc_hw);
/* make sure RX dma has buffers */
dma_rxfill(wlc->hw->di[RX_FIFO]);
wlc_phy_watchdog(wlc_hw->band->pi);
}
void
brcms_b_set_chanspec(struct brcms_hardware *wlc_hw, chanspec_t chanspec,
bool mute, struct txpwr_limits *txpwr)
{
uint bandunit;
BCMMSG(wlc_hw->wlc->wiphy, "wl%d: 0x%x\n", wlc_hw->unit, chanspec);
wlc_hw->chanspec = chanspec;
/* Switch bands if necessary */
if (NBANDS_HW(wlc_hw) > 1) {
bandunit = CHSPEC_BANDUNIT(chanspec);
if (wlc_hw->band->bandunit != bandunit) {
/* brcms_b_setband disables other bandunit,
* use light band switch if not up yet
*/
if (wlc_hw->up) {
wlc_phy_chanspec_radio_set(wlc_hw->
bandstate[bandunit]->
pi, chanspec);
brcms_b_setband(wlc_hw, bandunit, chanspec);
} else {
brcms_c_setxband(wlc_hw, bandunit);
}
}
}
wlc_phy_initcal_enable(wlc_hw->band->pi, !mute);
if (!wlc_hw->up) {
if (wlc_hw->clk)
wlc_phy_txpower_limit_set(wlc_hw->band->pi, txpwr,
chanspec);
wlc_phy_chanspec_radio_set(wlc_hw->band->pi, chanspec);
} else {
wlc_phy_chanspec_set(wlc_hw->band->pi, chanspec);
wlc_phy_txpower_limit_set(wlc_hw->band->pi, txpwr, chanspec);
/* Update muting of the channel */
brcms_b_mute(wlc_hw, mute, 0);
}
}
int brcms_b_state_get(struct brcms_hardware *wlc_hw,
struct brcms_b_state *state)
{
state->machwcap = wlc_hw->machwcap;
return 0;
}
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;
struct brcms_tunables *tune = wlc->pub->tunables;
struct wiphy *wiphy = wlc->wiphy;
/* name and offsets for dma_attach */
snprintf(name, sizeof(name), "wl%d", unit);
if (wlc_hw->di[0] == 0) { /* Init FIFOs */
uint addrwidth;
int dma_attach_err = 0;
/* Find out the DMA addressing capability and let OS know
* All the channels within one DMA core have 'common-minimum' same
* capability
*/
addrwidth =
dma_addrwidth(wlc_hw->sih, DMAREG(wlc_hw, DMA_TX, 0));
if (!wl_alloc_dma_resources(wlc_hw->wlc->wl, addrwidth)) {
wiphy_err(wiphy, "wl%d: wlc_attach: alloc_dma_"
"resources failed\n", unit);
return false;
}
/*
* 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_hw->sih,
(wme ? DMAREG(wlc_hw, DMA_TX, 0) :
NULL), DMAREG(wlc_hw, DMA_RX, 0),
(wme ? tune->ntxd : 0), tune->nrxd,
tune->rxbufsz, -1, tune->nrxbufpost,
BRCMS_HWRXOFF, &brcm_msg_level);
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_hw->sih,
DMAREG(wlc_hw, DMA_TX, 1), NULL,
tune->ntxd, 0, 0, -1, 0, 0,
&brcm_msg_level);
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_hw->sih,
DMAREG(wlc_hw, DMA_TX, 2), NULL,
tune->ntxd, 0, 0, -1, 0, 0,
&brcm_msg_level);
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_hw->sih,
DMAREG(wlc_hw, DMA_TX, 3),
NULL, tune->ntxd, 0, 0, -1,
0, 0, &brcm_msg_level);
dma_attach_err |= (NULL == wlc_hw->di[3]);
/* Cleaner to leave this as if with AP defined */
if (dma_attach_err) {
wiphy_err(wiphy, "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;
}
}
}
/* low level attach
* run backplane attach, init nvram
* run phy attach
* initialize software state for each core and band
* put the whole chip in reset(driver down state), no clock
*/
int brcms_b_attach(struct brcms_c_info *wlc, u16 vendor, u16 device, uint unit,
bool piomode, void *regsva, uint bustype, void *btparam)
{
struct brcms_hardware *wlc_hw;
d11regs_t *regs;
char *macaddr = NULL;
char *vars;
uint err = 0;
uint j;
bool wme = false;
struct shared_phy_params sha_params;
struct wiphy *wiphy = wlc->wiphy;
BCMMSG(wlc->wiphy, "wl%d: vendor 0x%x device 0x%x\n", unit, vendor,
device);
wme = true;
wlc_hw = wlc->hw;
wlc_hw->wlc = wlc;
wlc_hw->unit = unit;
wlc_hw->band = wlc_hw->bandstate[0];
wlc_hw->_piomode = piomode;
/* populate struct brcms_hardware with default values */
brcms_b_info_init(wlc_hw);
/*
* Do the hardware portion of the attach.
* Also initialize software state that depends on the particular hardware
* we are running.
*/
wlc_hw->sih = ai_attach(regsva, bustype, btparam,
&wlc_hw->vars, &wlc_hw->vars_size);
if (wlc_hw->sih == NULL) {
wiphy_err(wiphy, "wl%d: brcms_b_attach: si_attach failed\n",
unit);
err = 11;
goto fail;
}
vars = wlc_hw->vars;
/*
* Get vendid/devid nvram overwrites, which could be different
* than those the BIOS recognizes for devices on PCMCIA_BUS,
* SDIO_BUS, and SROMless devices on PCI_BUS.
*/
#ifdef BCMBUSTYPE
bustype = BCMBUSTYPE;
#endif
if (bustype != SI_BUS) {
char *var;
var = getvar(vars, "vendid");
if (var) {
vendor = (u16) simple_strtoul(var, NULL, 0);
wiphy_err(wiphy, "Overriding vendor id = 0x%x\n",
vendor);
}
var = getvar(vars, "devid");
if (var) {
u16 devid = (u16) simple_strtoul(var, NULL, 0);
if (devid != 0xffff) {
device = devid;
wiphy_err(wiphy, "Overriding device id = 0x%x"
"\n", device);
}
}
/* verify again the device is supported */
if (!brcms_c_chipmatch(vendor, device)) {
wiphy_err(wiphy, "wl%d: brcms_b_attach: Unsupported "
"vendor/device (0x%x/0x%x)\n",
unit, vendor, device);
err = 12;
goto fail;
}
}
wlc_hw->vendorid = vendor;
wlc_hw->deviceid = device;
/* set bar0 window to point at D11 core */
wlc_hw->regs = (d11regs_t *) ai_setcore(wlc_hw->sih, D11_CORE_ID, 0);
wlc_hw->corerev = ai_corerev(wlc_hw->sih);
regs = wlc_hw->regs;
wlc->regs = wlc_hw->regs;
/* validate chip, chiprev and corerev */
if (!brcms_c_isgoodchip(wlc_hw)) {
err = 13;
goto fail;
}
/* initialize power control registers */
ai_clkctl_init(wlc_hw->sih);
/* request fastclock and force fastclock for the rest of attach
* bring the d11 core out of reset.
* For PMU chips, the first wlc_clkctl_clk is no-op since core-clk is still false;
* But it will be called again inside wlc_corereset, after d11 is out of reset.
*/
brcms_b_clkctl_clk(wlc_hw, CLK_FAST);
brcms_b_corereset(wlc_hw, BRCMS_USE_COREFLAGS);
if (!brcms_b_validate_chip_access(wlc_hw)) {
wiphy_err(wiphy, "wl%d: brcms_b_attach: validate_chip_access "
"failed\n", unit);
err = 14;
goto fail;
}
/* get the board rev, used just below */
j = getintvar(vars, "boardrev");
/* promote srom boardrev of 0xFF to 1 */
if (j == BOARDREV_PROMOTABLE)
j = BOARDREV_PROMOTED;
wlc_hw->boardrev = (u16) j;
if (!brcms_c_validboardtype(wlc_hw)) {
wiphy_err(wiphy, "wl%d: brcms_b_attach: Unsupported Broadcom "
"board type (0x%x)" " or revision level (0x%x)\n",
unit, wlc_hw->sih->boardtype, wlc_hw->boardrev);
err = 15;
goto fail;
}
wlc_hw->sromrev = (u8) getintvar(vars, "sromrev");
wlc_hw->boardflags = (u32) getintvar(vars, "boardflags");
wlc_hw->boardflags2 = (u32) getintvar(vars, "boardflags2");
if (wlc_hw->boardflags & BFL_NOPLLDOWN)
brcms_b_pllreq(wlc_hw, true, BRCMS_PLLREQ_SHARED);
if ((wlc_hw->sih->bustype == PCI_BUS)
&& (ai_pci_war16165(wlc_hw->sih)))
wlc->war16165 = true;
/* check device id(srom, nvram etc.) to set bands */
if (wlc_hw->deviceid == BCM43224_D11N_ID ||
wlc_hw->deviceid == BCM43224_D11N_ID_VEN1) {
/* Dualband boards */
wlc_hw->_nbands = 2;
} else
wlc_hw->_nbands = 1;
if ((wlc_hw->sih->chip == BCM43225_CHIP_ID))
wlc_hw->_nbands = 1;
/* BMAC_NOTE: remove init of pub values when brcms_c_attach()
* unconditionally does the init of these values
*/
wlc->vendorid = wlc_hw->vendorid;
wlc->deviceid = wlc_hw->deviceid;
wlc->pub->sih = wlc_hw->sih;
wlc->pub->corerev = wlc_hw->corerev;
wlc->pub->sromrev = wlc_hw->sromrev;
wlc->pub->boardrev = wlc_hw->boardrev;
wlc->pub->boardflags = wlc_hw->boardflags;
wlc->pub->boardflags2 = wlc_hw->boardflags2;
wlc->pub->_nbands = wlc_hw->_nbands;
wlc_hw->physhim = wlc_phy_shim_attach(wlc_hw, wlc->wl, wlc);
if (wlc_hw->physhim == NULL) {
wiphy_err(wiphy, "wl%d: brcms_b_attach: wlc_phy_shim_attach "
"failed\n", unit);
err = 25;
goto fail;
}
/* pass all the parameters to wlc_phy_shared_attach in one struct */
sha_params.sih = wlc_hw->sih;
sha_params.physhim = wlc_hw->physhim;
sha_params.unit = unit;
sha_params.corerev = wlc_hw->corerev;
sha_params.vars = vars;
sha_params.vid = wlc_hw->vendorid;
sha_params.did = wlc_hw->deviceid;
sha_params.chip = wlc_hw->sih->chip;
sha_params.chiprev = wlc_hw->sih->chiprev;
sha_params.chippkg = wlc_hw->sih->chippkg;
sha_params.sromrev = wlc_hw->sromrev;
sha_params.boardtype = wlc_hw->sih->boardtype;
sha_params.boardrev = wlc_hw->boardrev;
sha_params.boardvendor = wlc_hw->sih->boardvendor;
sha_params.boardflags = wlc_hw->boardflags;
sha_params.boardflags2 = wlc_hw->boardflags2;
sha_params.bustype = wlc_hw->sih->bustype;
sha_params.buscorerev = wlc_hw->sih->buscorerev;
/* alloc and save pointer to shared phy state area */
wlc_hw->phy_sh = wlc_phy_shared_attach(&sha_params);
if (!wlc_hw->phy_sh) {
err = 16;
goto fail;
}
/* initialize software state for each core and band */
for (j = 0; j < NBANDS_HW(wlc_hw); j++) {
/*
* band0 is always 2.4Ghz
* band1, if present, is 5Ghz
*/
/* So if this is a single band 11a card, use band 1 */
if (IS_SINGLEBAND_5G(wlc_hw->deviceid))
j = BAND_5G_INDEX;
brcms_c_setxband(wlc_hw, j);
wlc_hw->band->bandunit = j;
wlc_hw->band->bandtype = j ? BRCM_BAND_5G : BRCM_BAND_2G;
wlc->band->bandunit = j;
wlc->band->bandtype = j ? BRCM_BAND_5G : BRCM_BAND_2G;
wlc->core->coreidx = ai_coreidx(wlc_hw->sih);
wlc_hw->machwcap = R_REG(&regs->machwcap);
wlc_hw->machwcap_backup = wlc_hw->machwcap;
/* init tx fifo size */
wlc_hw->xmtfifo_sz =
xmtfifo_sz[(wlc_hw->corerev - XMTFIFOTBL_STARTREV)];
/* Get a phy for this band */
wlc_hw->band->pi = wlc_phy_attach(wlc_hw->phy_sh,
(void *)regs, brcms_b_bandtype(wlc_hw), vars,
wlc->wiphy);
if (wlc_hw->band->pi == NULL) {
wiphy_err(wiphy, "wl%d: brcms_b_attach: wlc_phy_"
"attach failed\n", unit);
err = 17;
goto fail;
}
wlc_phy_machwcap_set(wlc_hw->band->pi, wlc_hw->machwcap);
wlc_phy_get_phyversion(wlc_hw->band->pi, &wlc_hw->band->phytype,
&wlc_hw->band->phyrev,
&wlc_hw->band->radioid,
&wlc_hw->band->radiorev);
wlc_hw->band->abgphy_encore =
wlc_phy_get_encore(wlc_hw->band->pi);
wlc->band->abgphy_encore = wlc_phy_get_encore(wlc_hw->band->pi);
wlc_hw->band->core_flags =
wlc_phy_get_coreflags(wlc_hw->band->pi);
/* verify good phy_type & supported phy revision */
if (BRCMS_ISNPHY(wlc_hw->band)) {
if (NCONF_HAS(wlc_hw->band->phyrev))
goto good_phy;
else
goto bad_phy;
} else if (BRCMS_ISLCNPHY(wlc_hw->band)) {
if (LCNCONF_HAS(wlc_hw->band->phyrev))
goto good_phy;
else
goto bad_phy;
} else {
bad_phy:
wiphy_err(wiphy, "wl%d: brcms_b_attach: unsupported "
"phy type/rev (%d/%d)\n", unit,
wlc_hw->band->phytype, wlc_hw->band->phyrev);
err = 18;
goto fail;
}
good_phy:
/* BMAC_NOTE: wlc->band->pi should not be set below and should be done in the
* high level attach. However we can not make that change until all low level access
* is changed to wlc_hw->band->pi. Instead do the wlc->band->pi init below, keeping
* wlc_hw->band->pi as well for incremental update of low level fns, and cut over
* low only init when all fns updated.
*/
wlc->band->pi = wlc_hw->band->pi;
wlc->band->phytype = wlc_hw->band->phytype;
wlc->band->phyrev = wlc_hw->band->phyrev;
wlc->band->radioid = wlc_hw->band->radioid;
wlc->band->radiorev = wlc_hw->band->radiorev;
/* default contention windows size limits */
wlc_hw->band->CWmin = APHY_CWMIN;
wlc_hw->band->CWmax = PHY_CWMAX;
if (!brcms_b_attach_dmapio(wlc, j, wme)) {
err = 19;
goto fail;
}
}
/* disable core to match driver "down" state */
brcms_c_coredisable(wlc_hw);
/* Match driver "down" state */
if (wlc_hw->sih->bustype == PCI_BUS)
ai_pci_down(wlc_hw->sih);
/* register sb interrupt callback functions */
ai_register_intr_callback(wlc_hw->sih, (void *)brcms_c_wlintrsoff,
(void *)brcms_c_wlintrsrestore, NULL, wlc);
/* turn off pll and xtal to match driver "down" state */
brcms_b_xtal(wlc_hw, OFF);
/* *********************************************************************
* The hardware is in the DOWN state at this point. D11 core
* or cores are in reset with clocks off, and the board PLLs
* are off if possible.
*
* Beyond this point, wlc->sbclk == false and chip registers
* should not be touched.
*********************************************************************
*/
/* init etheraddr state variables */
macaddr = brcms_c_get_macaddr(wlc_hw);
if (macaddr == NULL) {
wiphy_err(wiphy, "wl%d: brcms_b_attach: macaddr not found\n",
unit);
err = 21;
goto fail;
}
brcmu_ether_atoe(macaddr, wlc_hw->etheraddr);
if (is_broadcast_ether_addr(wlc_hw->etheraddr) ||
is_zero_ether_addr(wlc_hw->etheraddr)) {
wiphy_err(wiphy, "wl%d: brcms_b_attach: bad macaddr %s\n",
unit, macaddr);
err = 22;
goto fail;
}
BCMMSG(wlc->wiphy,
"deviceid 0x%x nbands %d board 0x%x macaddr: %s\n",
wlc_hw->deviceid, wlc_hw->_nbands,
wlc_hw->sih->boardtype, macaddr);
return err;
fail:
wiphy_err(wiphy, "wl%d: brcms_b_attach: failed with err %d\n", unit,
err);
return err;
}
/*
* 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);
}
/*
* low level detach
*/
int brcms_b_detach(struct brcms_c_info *wlc)
{
uint i;
struct brcms_hw_band *band;
struct brcms_hardware *wlc_hw = wlc->hw;
int callbacks;
callbacks = 0;
if (wlc_hw->sih) {
/* detach interrupt sync mechanism since interrupt is disabled and per-port
* interrupt object may has been freed. this must be done before sb core switch
*/
ai_deregister_intr_callback(wlc_hw->sih);
if (wlc_hw->sih->bustype == PCI_BUS)
ai_pci_sleep(wlc_hw->sih);
}
brcms_b_detach_dmapio(wlc_hw);
band = wlc_hw->band;
for (i = 0; i < NBANDS_HW(wlc_hw); i++) {
if (band->pi) {
/* Detach this band's phy */
wlc_phy_detach(band->pi);
band->pi = NULL;
}
band = wlc_hw->bandstate[OTHERBANDUNIT(wlc)];
}
/* Free shared phy state */
kfree(wlc_hw->phy_sh);
wlc_phy_shim_detach(wlc_hw->physhim);
/* free vars */
kfree(wlc_hw->vars);
wlc_hw->vars = NULL;
if (wlc_hw->sih) {
ai_detach(wlc_hw->sih);
wlc_hw->sih = NULL;
}
return callbacks;
}
void brcms_b_reset(struct brcms_hardware *wlc_hw)
{
BCMMSG(wlc_hw->wlc->wiphy, "wl%d\n", wlc_hw->unit);
/* reset the core */
if (!DEVICEREMOVED(wlc_hw->wlc))
brcms_b_corereset(wlc_hw, BRCMS_USE_COREFLAGS);
/* purge the dma rings */
brcms_c_flushqueues(wlc_hw->wlc);
brcms_c_reset_bmac_done(wlc_hw->wlc);
}
void
brcms_b_init(struct brcms_hardware *wlc_hw, chanspec_t chanspec,
bool mute) {
u32 macintmask;
bool fastclk;
struct brcms_c_info *wlc = wlc_hw->wlc;
BCMMSG(wlc_hw->wlc->wiphy, "wl%d\n", wlc_hw->unit);
/* request FAST clock if not on */
fastclk = wlc_hw->forcefastclk;
if (!fastclk)
brcms_b_clkctl_clk(wlc_hw, CLK_FAST);
/* disable interrupts */
macintmask = brcms_intrsoff(wlc->wl);
/* set up the specified band and chanspec */
brcms_c_setxband(wlc_hw, CHSPEC_BANDUNIT(chanspec));
wlc_phy_chanspec_radio_set(wlc_hw->band->pi, chanspec);
/* do one-time phy inits and calibration */
wlc_phy_cal_init(wlc_hw->band->pi);
/* core-specific initialization */
brcms_b_coreinit(wlc);
/* suspend the tx fifos and mute the phy for preism cac time */
if (mute)
brcms_b_mute(wlc_hw, ON, PHY_MUTE_FOR_PREISM);
/* band-specific inits */
brcms_b_bsinit(wlc, chanspec);
/* restore macintmask */
brcms_intrsrestore(wlc->wl, macintmask);
/* seed wake_override with BRCMS_WAKE_OVERRIDE_MACSUSPEND since the mac
* is suspended and brcms_c_enable_mac() will clear this override bit.
*/
mboolset(wlc_hw->wake_override, BRCMS_WAKE_OVERRIDE_MACSUSPEND);
/*
* initialize mac_suspend_depth to 1 to match ucode initial suspended state
*/
wlc_hw->mac_suspend_depth = 1;
/* restore the clk */
if (!fastclk)
brcms_b_clkctl_clk(wlc_hw, CLK_DYNAMIC);
}
int brcms_b_up_prep(struct brcms_hardware *wlc_hw)
{
uint coremask;
BCMMSG(wlc_hw->wlc->wiphy, "wl%d\n", wlc_hw->unit);
/*
* Enable pll and xtal, initialize the power control registers,
* and force fastclock for the remainder of brcms_c_up().
*/
brcms_b_xtal(wlc_hw, ON);
ai_clkctl_init(wlc_hw->sih);
brcms_b_clkctl_clk(wlc_hw, CLK_FAST);
/*
* Configure pci/pcmcia here instead of in brcms_c_attach()
* to allow mfg hotswap: down, hotswap (chip power cycle), up.
*/
coremask = (1 << wlc_hw->wlc->core->coreidx);
if (wlc_hw->sih->bustype == PCI_BUS)
ai_pci_setup(wlc_hw->sih, coremask);
/*
* Need to read the hwradio status here to cover the case where the system
* is loaded with the hw radio disabled. We do not want to bring the driver up in this case.
*/
if (brcms_b_radio_read_hwdisabled(wlc_hw)) {
/* put SB PCI in down state again */
if (wlc_hw->sih->bustype == PCI_BUS)
ai_pci_down(wlc_hw->sih);
brcms_b_xtal(wlc_hw, OFF);
return -ENOMEDIUM;
}
if (wlc_hw->sih->bustype == PCI_BUS)
ai_pci_up(wlc_hw->sih);
/* reset the d11 core */
brcms_b_corereset(wlc_hw, BRCMS_USE_COREFLAGS);
return 0;
}
int brcms_b_up_finish(struct brcms_hardware *wlc_hw)
{
BCMMSG(wlc_hw->wlc->wiphy, "wl%d\n", wlc_hw->unit);
wlc_hw->up = true;
wlc_phy_hw_state_upd(wlc_hw->band->pi, true);
/* FULLY enable dynamic power control and d11 core interrupt */
brcms_b_clkctl_clk(wlc_hw, CLK_DYNAMIC);
brcms_intrson(wlc_hw->wlc->wl);
return 0;
}
int brcms_b_bmac_down_prep(struct brcms_hardware *wlc_hw)
{
bool dev_gone;
uint callbacks = 0;
BCMMSG(wlc_hw->wlc->wiphy, "wl%d\n", wlc_hw->unit);
if (!wlc_hw->up)
return callbacks;
dev_gone = DEVICEREMOVED(wlc_hw->wlc);
/* disable interrupts */
if (dev_gone)
wlc_hw->wlc->macintmask = 0;
else {
/* now disable interrupts */
brcms_intrsoff(wlc_hw->wlc->wl);
/* ensure we're running on the pll clock again */
brcms_b_clkctl_clk(wlc_hw, CLK_FAST);
}
/* down phy at the last of this stage */
callbacks += wlc_phy_down(wlc_hw->band->pi);
return callbacks;
}
int brcms_b_down_finish(struct brcms_hardware *wlc_hw)
{
uint callbacks = 0;
bool dev_gone;
BCMMSG(wlc_hw->wlc->wiphy, "wl%d\n", wlc_hw->unit);
if (!wlc_hw->up)
return callbacks;
wlc_hw->up = false;
wlc_phy_hw_state_upd(wlc_hw->band->pi, false);
dev_gone = DEVICEREMOVED(wlc_hw->wlc);
if (dev_gone) {
wlc_hw->sbclk = false;
wlc_hw->clk = false;
wlc_phy_hw_clk_state_upd(wlc_hw->band->pi, false);
/* reclaim any posted packets */
brcms_c_flushqueues(wlc_hw->wlc);
} else {
/* Reset and disable the core */
if (ai_iscoreup(wlc_hw->sih)) {
if (R_REG(&wlc_hw->regs->maccontrol) &
MCTL_EN_MAC)
brcms_c_suspend_mac_and_wait(wlc_hw->wlc);
callbacks += brcms_reset(wlc_hw->wlc->wl);
brcms_c_coredisable(wlc_hw);
}
/* turn off primary xtal and pll */
if (!wlc_hw->noreset) {
if (wlc_hw->sih->bustype == PCI_BUS)
ai_pci_down(wlc_hw->sih);
brcms_b_xtal(wlc_hw, OFF);
}
}
return callbacks;
}
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);
}
void brcms_b_hw_etheraddr(struct brcms_hardware *wlc_hw, u8 *ea)
{
memcpy(ea, wlc_hw->etheraddr, ETH_ALEN);
}
static int brcms_b_bandtype(struct brcms_hardware *wlc_hw)
{
return wlc_hw->band->bandtype;
}
/* control chip clock to save power, enable dynamic clock or force fast clock */
static void brcms_b_clkctl_clk(struct brcms_hardware *wlc_hw, uint mode)
{
if (PMUCTL_ENAB(wlc_hw->sih)) {
/* 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 == CLK_FAST) {
OR_REG(&wlc_hw->regs->clk_ctl_st,
CCS_FORCEHT);
udelay(64);
SPINWAIT(((R_REG
(&wlc_hw->regs->
clk_ctl_st) & CCS_HTAVAIL) == 0),
PMU_MAX_TRANSITION_DLY);
WARN_ON(!(R_REG
(&wlc_hw->regs->
clk_ctl_st) & CCS_HTAVAIL));
} else {
if ((wlc_hw->sih->pmurev == 0) &&
(R_REG
(&wlc_hw->regs->
clk_ctl_st) & (CCS_FORCEHT | CCS_HTAREQ)))
SPINWAIT(((R_REG
(&wlc_hw->regs->
clk_ctl_st) & CCS_HTAVAIL)
== 0),
PMU_MAX_TRANSITION_DLY);
AND_REG(&wlc_hw->regs->clk_ctl_st,
~CCS_FORCEHT);
}
}
wlc_hw->forcefastclk = (mode == CLK_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(!(ai_core_sflags(wlc_hw->sih, 0, 0) &
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 (wlc.c 1.4499) 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 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;
}
}
/* 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;
}
}
u16 brcms_b_mhf_get(struct brcms_hardware *wlc_hw, u8 idx, int bands)
{
struct brcms_hw_band *band;
if (idx >= MHFMAX)
return 0; /* error condition */
switch (bands) {
case BRCM_BAND_AUTO:
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)
return 0;
return band->mhfs[idx];
}
static void brcms_c_write_mhf(struct brcms_hardware *wlc_hw, u16 *mhfs)
{
u8 idx;
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]);
}
}
/* 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);
}
/* 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);
}
/* 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;
}
W_REG(&wlc_hw->regs->maccontrol, maccontrol);
}
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);
return;
}
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);
return;
}
/* 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);
return;
}
/* 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.
*/
void
brcms_b_set_addrmatch(struct brcms_hardware *wlc_hw, int match_reg_offset,
const u8 *addr)
{
d11regs_t *regs;
u16 mac_l;
u16 mac_m;
u16 mac_h;
BCMMSG(wlc_hw->wlc->wiphy, "wl%d: brcms_b_set_addrmatch\n",
wlc_hw->unit);
regs = wlc_hw->regs;
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 */
W_REG(&regs->rcm_ctl, RCM_INC_DATA | match_reg_offset);
W_REG(&regs->rcm_mat_data, mac_l);
W_REG(&regs->rcm_mat_data, mac_m);
W_REG(&regs->rcm_mat_data, mac_h);
}
void
brcms_b_write_template_ram(struct brcms_hardware *wlc_hw, int offset, int len,
void *buf)
{
d11regs_t *regs;
u32 word;
bool be_bit;
BCMMSG(wlc_hw->wlc->wiphy, "wl%d\n", wlc_hw->unit);
regs = wlc_hw->regs;
W_REG(&regs->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 = (R_REG(&regs->maccontrol) & MCTL_BIGEND) != 0;
while (len > 0) {
memcpy(&word, buf, sizeof(u32));
if (be_bit)
word = cpu_to_be32(word);
else
word = cpu_to_le32(word);
W_REG(&regs->tplatewrdata, word);
buf = (u8 *) buf + sizeof(u32);
len -= sizeof(u32);
}
}
void brcms_b_set_cwmin(struct brcms_hardware *wlc_hw, u16 newmin)
{
wlc_hw->band->CWmin = newmin;
W_REG(&wlc_hw->regs->objaddr, OBJADDR_SCR_SEL | S_DOT11_CWMIN);
(void)R_REG(&wlc_hw->regs->objaddr);
W_REG(&wlc_hw->regs->objdata, newmin);
}
void brcms_b_set_cwmax(struct brcms_hardware *wlc_hw, u16 newmax)
{
wlc_hw->band->CWmax = newmax;
W_REG(&wlc_hw->regs->objaddr, OBJADDR_SCR_SEL | S_DOT11_CWMAX);
(void)R_REG(&wlc_hw->regs->objaddr);
W_REG(&wlc_hw->regs->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, CLK_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, CLK_DYNAMIC);
}
static void
brcms_c_write_hw_bcntemplate0(struct brcms_hardware *wlc_hw, void *bcn,
int len)
{
d11regs_t *regs = wlc_hw->regs;
brcms_b_write_template_ram(wlc_hw, T_BCN0_TPL_BASE, (len + 3) & ~3,
bcn);
/* write beacon length to SCR */
brcms_b_write_shm(wlc_hw, M_BCN0_FRM_BYTESZ, (u16) len);
/* mark beacon0 valid */
OR_REG(&regs->maccommand, MCMD_BCN0VLD);
}
static void
brcms_c_write_hw_bcntemplate1(struct brcms_hardware *wlc_hw, void *bcn,
int len)
{
d11regs_t *regs = wlc_hw->regs;
brcms_b_write_template_ram(wlc_hw, T_BCN1_TPL_BASE, (len + 3) & ~3,
bcn);
/* write beacon length to SCR */
brcms_b_write_shm(wlc_hw, M_BCN1_FRM_BYTESZ, (u16) len);
/* mark beacon1 valid */
OR_REG(&regs->maccommand, MCMD_BCN1VLD);
}
/* mac is assumed to be suspended at this point */
void
brcms_b_write_hw_bcntemplates(struct brcms_hardware *wlc_hw, void *bcn,
int len, bool both)
{
d11regs_t *regs = wlc_hw->regs;
if (both) {
brcms_c_write_hw_bcntemplate0(wlc_hw, bcn, len);
brcms_c_write_hw_bcntemplate1(wlc_hw, bcn, len);
} else {
/* bcn 0 */
if (!(R_REG(&regs->maccommand) & MCMD_BCN0VLD))
brcms_c_write_hw_bcntemplate0(wlc_hw, bcn, len);
/* bcn 1 */
else if (!
(R_REG(&regs->maccommand) & MCMD_BCN1VLD))
brcms_c_write_hw_bcntemplate1(wlc_hw, bcn, len);
}
}
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);
}
/* band-specific init */
static void
brcms_b_bsinit(struct brcms_c_info *wlc, chanspec_t chanspec)
{
struct brcms_hardware *wlc_hw = wlc->hw;
BCMMSG(wlc->wiphy, "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,
BAND_5G(wlc_hw->band->
bandtype) ? 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);
}
static void brcms_b_core_phy_clk(struct brcms_hardware *wlc_hw, bool clk)
{
BCMMSG(wlc_hw->wlc->wiphy, "wl%d: clk %d\n", wlc_hw->unit, clk);
wlc_hw->phyclk = clk;
if (OFF == clk) { /* clear gmode bit, put phy into reset */
ai_core_cflags(wlc_hw->sih, (SICF_PRST | SICF_FGC | SICF_GMODE),
(SICF_PRST | SICF_FGC));
udelay(1);
ai_core_cflags(wlc_hw->sih, (SICF_PRST | SICF_FGC), SICF_PRST);
udelay(1);
} else { /* take phy out of reset */
ai_core_cflags(wlc_hw->sih, (SICF_PRST | SICF_FGC), SICF_FGC);
udelay(1);
ai_core_cflags(wlc_hw->sih, (SICF_FGC), 0);
udelay(1);
}
}
/* Perform a soft reset of the PHY PLL */
void brcms_b_core_phypll_reset(struct brcms_hardware *wlc_hw)
{
BCMMSG(wlc_hw->wlc->wiphy, "wl%d\n", wlc_hw->unit);
ai_corereg(wlc_hw->sih, SI_CC_IDX,
offsetof(chipcregs_t, chipcontrol_addr), ~0, 0);
udelay(1);
ai_corereg(wlc_hw->sih, SI_CC_IDX,
offsetof(chipcregs_t, chipcontrol_data), 0x4, 0);
udelay(1);
ai_corereg(wlc_hw->sih, SI_CC_IDX,
offsetof(chipcregs_t, chipcontrol_data), 0x4, 4);
udelay(1);
ai_corereg(wlc_hw->sih, SI_CC_IDX,
offsetof(chipcregs_t, 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)
ai_core_cflags(wlc_hw->sih, SICF_FGC, SICF_FGC);
else
ai_core_cflags(wlc_hw->sih, SICF_FGC, 0);
}
void brcms_b_macphyclk_set(struct brcms_hardware *wlc_hw, bool clk)
{
if (ON == clk)
ai_core_cflags(wlc_hw->sih, SICF_MPCLKE, SICF_MPCLKE);
else
ai_core_cflags(wlc_hw->sih, 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;
bool phy_in_reset = false;
BCMMSG(wlc_hw->wlc->wiphy, "wl%d\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 */
ai_core_cflags(wlc_hw->sih, 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 */
ai_core_cflags(wlc_hw->sih, (SICF_PRST | SICF_PCLKE),
(SICF_PRST | SICF_PCLKE));
phy_in_reset = true;
} else {
ai_core_cflags(wlc_hw->sih,
(SICF_PRST | SICF_PCLKE | SICF_BWMASK),
(SICF_PRST | SICF_PCLKE | phy_bw_clkbits));
}
udelay(2);
brcms_b_core_phy_clk(wlc_hw, ON);
if (pih)
wlc_phy_anacore(pih, ON);
}
/* switch to and initialize new band */
static void
brcms_b_setband(struct brcms_hardware *wlc_hw, uint bandunit,
chanspec_t chanspec) {
struct brcms_c_info *wlc = wlc_hw->wlc;
u32 macintmask;
/* Enable the d11 core before accessing it */
if (!ai_iscoreup(wlc_hw->sih)) {
ai_core_reset(wlc_hw->sih, 0, 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((R_REG(&wlc_hw->regs->maccontrol) & MCTL_EN_MAC) != 0);
}
/* low-level band switch utility routine */
void brcms_c_setxband(struct brcms_hardware *wlc_hw,
uint bandunit)
{
BCMMSG(wlc_hw->wlc->wiphy, "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) {
ai_core_cflags(wlc_hw->sih, SICF_GMODE,
((bandunit == 0) ? SICF_GMODE : 0));
}
}
static bool brcms_c_isgoodchip(struct brcms_hardware *wlc_hw)
{
/* reject unsupported corerev */
if (!VALID_COREREV(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 (wlc_hw->sih->boardvendor != 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 char *brcms_c_get_macaddr(struct brcms_hardware *wlc_hw)
{
const char *varname = "macaddr";
char *macaddr;
/* If macaddr exists, use it (Sromrev4, CIS, ...). */
macaddr = getvar(wlc_hw->vars, varname);
if (macaddr != NULL)
return macaddr;
if (NBANDS_HW(wlc_hw) > 1)
varname = "et1macaddr";
else
varname = "il0macaddr";
macaddr = getvar(wlc_hw->vars, varname);
if (macaddr == NULL) {
wiphy_err(wlc_hw->wlc->wiphy, "wl%d: wlc_get_macaddr: macaddr "
"getvar(%s) not found\n", wlc_hw->unit, varname);
}
return macaddr;
}
/*
* 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.
*/
bool brcms_b_radio_read_hwdisabled(struct brcms_hardware *wlc_hw)
{
bool v, clk, xtal;
u32 resetbits = 0, 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
*/
flags |= SICF_PCLKE;
/* AI chip doesn't restore bar0win2 on hibernation/resume, need sw fixup */
if ((wlc_hw->sih->chip == BCM43224_CHIP_ID) ||
(wlc_hw->sih->chip == BCM43225_CHIP_ID))
wlc_hw->regs =
(d11regs_t *) ai_setcore(wlc_hw->sih, D11_CORE_ID,
0);
ai_core_reset(wlc_hw->sih, flags, resetbits);
brcms_c_mctrl_reset(wlc_hw);
}
v = ((R_REG(&wlc_hw->regs->phydebug) & PDBG_RFD) != 0);
/* put core back into reset */
if (!clk)
ai_core_disable(wlc_hw->sih, 0);
if (!xtal)
brcms_b_xtal(wlc_hw, OFF);
return v;
}
/* Initialize just the hardware when coming out of POR or S3/S5 system states */
void brcms_b_hw_up(struct brcms_hardware *wlc_hw)
{
if (wlc_hw->wlc->pub->hw_up)
return;
BCMMSG(wlc_hw->wlc->wiphy, "wl%d\n", wlc_hw->unit);
/*
* Enable pll and xtal, initialize the power control registers,
* and force fastclock for the remainder of brcms_c_up().
*/
brcms_b_xtal(wlc_hw, ON);
ai_clkctl_init(wlc_hw->sih);
brcms_b_clkctl_clk(wlc_hw, CLK_FAST);
if (wlc_hw->sih->bustype == PCI_BUS) {
ai_pci_fixcfg(wlc_hw->sih);
/* AI chip doesn't restore bar0win2 on hibernation/resume, need sw fixup */
if ((wlc_hw->sih->chip == BCM43224_CHIP_ID) ||
(wlc_hw->sih->chip == BCM43225_CHIP_ID))
wlc_hw->regs =
(d11regs_t *) ai_setcore(wlc_hw->sih, D11_CORE_ID,
0);
}
/* Inform phy that a POR reset has occurred so it does a complete phy init */
wlc_phy_por_inform(wlc_hw->band->pi);
wlc_hw->ucode_loaded = false;
wlc_hw->wlc->pub->hw_up = true;
if ((wlc_hw->boardflags & BFL_FEM)
&& (wlc_hw->sih->chip == BCM4313_CHIP_ID)) {
if (!
(wlc_hw->boardrev >= 0x1250
&& (wlc_hw->boardflags & BFL_FEM_BT)))
ai_epa_4313war(wlc_hw->sih);
}
}
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)
{
d11regs_t *regs;
uint i;
bool fastclk;
u32 resetbits = 0;
if (flags == BRCMS_USE_COREFLAGS)
flags = (wlc_hw->band->pi ? wlc_hw->band->core_flags : 0);
BCMMSG(wlc_hw->wlc->wiphy, "wl%d\n", wlc_hw->unit);
regs = wlc_hw->regs;
/* request FAST clock if not on */
fastclk = wlc_hw->forcefastclk;
if (!fastclk)
brcms_b_clkctl_clk(wlc_hw, CLK_FAST);
/* reset the dma engines except first time thru */
if (ai_iscoreup(wlc_hw->sih)) {
for (i = 0; i < NFIFO; i++)
if ((wlc_hw->di[i]) && (!dma_txreset(wlc_hw->di[i]))) {
wiphy_err(wlc_hw->wlc->wiphy, "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))) {
wiphy_err(wlc_hw->wlc->wiphy, "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
*/
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;
ai_core_reset(wlc_hw->sih, flags, resetbits);
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 (PMUCTL_ENAB(wlc_hw->sih))
brcms_b_clkctl_clk(wlc_hw, CLK_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, CLK_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)
{
d11regs_t *regs = wlc_hw->regs;
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);
W_REG(&regs->xmtfifocmd, txfifo_cmd);
W_REG(&regs->xmtfifodef, txfifo_def);
W_REG(&regs->xmtfifodef1, txfifo_def1);
W_REG(&regs->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]));
}
/* d11 core init
* reset PSM
* download ucode/PCM
* let ucode run to suspended
* download ucode inits
* config other core registers
* init dma
*/
static void brcms_b_coreinit(struct brcms_c_info *wlc)
{
struct brcms_hardware *wlc_hw = wlc->hw;
d11regs_t *regs;
u32 sflags;
uint bcnint_us;
uint i = 0;
bool fifosz_fixup = false;
int err = 0;
u16 buf[NFIFO];
struct wiphy *wiphy = wlc->wiphy;
regs = wlc_hw->regs;
BCMMSG(wlc->wiphy, "wl%d\n", wlc_hw->unit);
/* reset PSM */
brcms_b_mctrl(wlc_hw, ~0, (MCTL_IHR_EN | MCTL_PSM_JMP_0 | MCTL_WAKE));
brcms_ucode_download(wlc_hw);
/*
* FIFOSZ fixup. driver wants to controls the fifo allocation.
*/
fifosz_fixup = true;
/* let the PSM run to the suspended state, set mode to BSS STA */
W_REG(&regs->macintstatus, -1);
brcms_b_mctrl(wlc_hw, ~0,
(MCTL_IHR_EN | MCTL_INFRA | MCTL_PSM_RUN | MCTL_WAKE));
/* wait for ucode to self-suspend after auto-init */
SPINWAIT(((R_REG(&regs->macintstatus) & MI_MACSSPNDD) == 0),
1000 * 1000);
if ((R_REG(&regs->macintstatus) & MI_MACSSPNDD) == 0)
wiphy_err(wiphy, "wl%d: wlc_coreinit: ucode did not self-"
"suspend!\n", wlc_hw->unit);
brcms_c_gpio_init(wlc);
sflags = ai_core_sflags(wlc_hw->sih, 0, 0);
if (D11REV_IS(wlc_hw->corerev, 23)) {
if (BRCMS_ISNPHY(wlc_hw->band))
brcms_c_write_inits(wlc_hw, d11n0initvals16);
else
wiphy_err(wiphy, "%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, d11lcn0initvals24);
} else {
wiphy_err(wiphy, "%s: wl%d: unsupported phy in corerev"
" %d\n", __func__, wlc_hw->unit,
wlc_hw->corerev);
}
} else {
wiphy_err(wiphy, "%s: wl%d: unsupported corerev %d\n",
__func__, wlc_hw->unit, wlc_hw->corerev);
}
/* For old ucode, txfifo sizes needs to be modified(increased) */
if (fifosz_fixup == true) {
brcms_b_corerev_fifofixup(wlc_hw);
}
/* check txfifo allocations match between ucode and driver */
buf[TX_AC_BE_FIFO] = brcms_b_read_shm(wlc_hw, M_FIFOSIZE0);
if (buf[TX_AC_BE_FIFO] != wlc_hw->xmtfifo_sz[TX_AC_BE_FIFO]) {
i = TX_AC_BE_FIFO;
err = -1;
}
buf[TX_AC_VI_FIFO] = brcms_b_read_shm(wlc_hw, M_FIFOSIZE1);
if (buf[TX_AC_VI_FIFO] != wlc_hw->xmtfifo_sz[TX_AC_VI_FIFO]) {
i = TX_AC_VI_FIFO;
err = -1;
}
buf[TX_AC_BK_FIFO] = brcms_b_read_shm(wlc_hw, M_FIFOSIZE2);
buf[TX_AC_VO_FIFO] = (buf[TX_AC_BK_FIFO] >> 8) & 0xff;
buf[TX_AC_BK_FIFO] &= 0xff;
if (buf[TX_AC_BK_FIFO] != wlc_hw->xmtfifo_sz[TX_AC_BK_FIFO]) {
i = TX_AC_BK_FIFO;
err = -1;
}
if (buf[TX_AC_VO_FIFO] != wlc_hw->xmtfifo_sz[TX_AC_VO_FIFO]) {
i = TX_AC_VO_FIFO;
err = -1;
}
buf[TX_BCMC_FIFO] = brcms_b_read_shm(wlc_hw, M_FIFOSIZE3);
buf[TX_ATIM_FIFO] = (buf[TX_BCMC_FIFO] >> 8) & 0xff;
buf[TX_BCMC_FIFO] &= 0xff;
if (buf[TX_BCMC_FIFO] != wlc_hw->xmtfifo_sz[TX_BCMC_FIFO]) {
i = TX_BCMC_FIFO;
err = -1;
}
if (buf[TX_ATIM_FIFO] != wlc_hw->xmtfifo_sz[TX_ATIM_FIFO]) {
i = TX_ATIM_FIFO;
err = -1;
}
if (err != 0) {
wiphy_err(wiphy, "wlc_coreinit: txfifo mismatch: ucode size %d"
" driver size %d index %d\n", buf[i],
wlc_hw->xmtfifo_sz[i], i);
}
/* make sure we can still talk to the mac */
WARN_ON(R_REG(&regs->maccontrol) == 0xffffffff);
/* band-specific inits done by wlc_bsinit() */
/* Set up frame burst size and antenna swap threshold init values */
brcms_b_write_shm(wlc_hw, M_MBURST_SIZE, MAXTXFRAMEBURST);
brcms_b_write_shm(wlc_hw, M_MAX_ANTCNT, ANTCNT);
/* enable one rx interrupt per received frame */
W_REG(&regs->intrcvlazy[0], (1 << IRL_FC_SHIFT));
/* set the station mode (BSS STA) */
brcms_b_mctrl(wlc_hw,
(MCTL_INFRA | MCTL_DISCARD_PMQ | MCTL_AP),
(MCTL_INFRA | MCTL_DISCARD_PMQ));
/* set up Beacon interval */
bcnint_us = 0x8000 << 10;
W_REG(&regs->tsf_cfprep, (bcnint_us << CFPREP_CBI_SHIFT));
W_REG(&regs->tsf_cfpstart, bcnint_us);
W_REG(&regs->macintstatus, MI_GP1);
/* write interrupt mask */
W_REG(&regs->intctrlregs[RX_FIFO].intmask, DEF_RXINTMASK);
/* allow the MAC to control the PHY clock (dynamic on/off) */
brcms_b_macphyclk_set(wlc_hw, ON);
/* program dynamic clock control fast powerup delay register */
wlc->fastpwrup_dly = ai_clkctl_fast_pwrup_delay(wlc_hw->sih);
W_REG(&regs->scc_fastpwrup_dly, wlc->fastpwrup_dly);
/* tell the ucode the corerev */
brcms_b_write_shm(wlc_hw, M_MACHW_VER, (u16) wlc_hw->corerev);
/* tell the ucode MAC capabilities */
brcms_b_write_shm(wlc_hw, M_MACHW_CAP_L,
(u16) (wlc_hw->machwcap & 0xffff));
brcms_b_write_shm(wlc_hw, M_MACHW_CAP_H,
(u16) ((wlc_hw->
machwcap >> 16) & 0xffff));
/* write retry limits to SCR, this done after PSM init */
W_REG(&regs->objaddr, OBJADDR_SCR_SEL | S_DOT11_SRC_LMT);
(void)R_REG(&regs->objaddr);
W_REG(&regs->objdata, wlc_hw->SRL);
W_REG(&regs->objaddr, OBJADDR_SCR_SEL | S_DOT11_LRC_LMT);
(void)R_REG(&regs->objaddr);
W_REG(&regs->objdata, wlc_hw->LRL);
/* write rate fallback retry limits */
brcms_b_write_shm(wlc_hw, M_SFRMTXCNTFBRTHSD, wlc_hw->SFBL);
brcms_b_write_shm(wlc_hw, M_LFRMTXCNTFBRTHSD, wlc_hw->LFBL);
AND_REG(&regs->ifs_ctl, 0x0FFF);
W_REG(&regs->ifs_aifsn, EDCF_AIFSN_MIN);
/* dma initializations */
wlc->txpend16165war = 0;
/* init the tx dma engines */
for (i = 0; i < NFIFO; i++) {
if (wlc_hw->di[i])
dma_txinit(wlc_hw->di[i]);
}
/* init the rx dma engine(s) and post receive buffers */
dma_rxinit(wlc_hw->di[RX_FIFO]);
dma_rxfill(wlc_hw->di[RX_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)
{
d11regs_t *regs;
regs = wlc_hw->regs;
if ((wlc_hw->sih->chip == BCM43224_CHIP_ID) ||
(wlc_hw->sih->chip == BCM43225_CHIP_ID)) {
if (spurmode == WL_SPURAVOID_ON2) { /* 126Mhz */
W_REG(&regs->tsf_clk_frac_l, 0x2082);
W_REG(&regs->tsf_clk_frac_h, 0x8);
} else if (spurmode == WL_SPURAVOID_ON1) { /* 123Mhz */
W_REG(&regs->tsf_clk_frac_l, 0x5341);
W_REG(&regs->tsf_clk_frac_h, 0x8);
} else { /* 120Mhz */
W_REG(&regs->tsf_clk_frac_l, 0x8889);
W_REG(&regs->tsf_clk_frac_h, 0x8);
}
} else if (BRCMS_ISLCNPHY(wlc_hw->band)) {
if (spurmode == WL_SPURAVOID_ON1) { /* 82Mhz */
W_REG(&regs->tsf_clk_frac_l, 0x7CE0);
W_REG(&regs->tsf_clk_frac_h, 0xC);
} else { /* 80Mhz */
W_REG(&regs->tsf_clk_frac_l, 0xCCCD);
W_REG(&regs->tsf_clk_frac_h, 0xC);
}
}
}
/* 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;
d11regs_t *regs;
u32 gc, gm;
regs = wlc_hw->regs;
/* 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
*/
OR_REG(&regs->psm_gpio_oe,
(BOARD_GPIO_12 | BOARD_GPIO_13));
OR_REG(&regs->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 */
ai_gpiocontrol(wlc_hw->sih, gm, gc, GPIO_DRV_PRIORITY);
}
static void brcms_ucode_download(struct brcms_hardware *wlc_hw)
{
struct brcms_c_info *wlc;
wlc = wlc_hw->wlc;
if (wlc_hw->ucode_loaded)
return;
if (D11REV_IS(wlc_hw->corerev, 23)) {
if (BRCMS_ISNPHY(wlc_hw->band)) {
brcms_ucode_write(wlc_hw, bcm43xx_16_mimo,
bcm43xx_16_mimosz);
wlc_hw->ucode_loaded = true;
} else
wiphy_err(wlc->wiphy, "%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, bcm43xx_24_lcn,
bcm43xx_24_lcnsz);
wlc_hw->ucode_loaded = true;
} else {
wiphy_err(wlc->wiphy, "%s: wl%d: unsupported phy in "
"corerev %d\n",
__func__, wlc_hw->unit, wlc_hw->corerev);
}
}
}
static void brcms_ucode_write(struct brcms_hardware *wlc_hw, const u32 ucode[],
const uint nbytes) {
d11regs_t *regs = wlc_hw->regs;
uint i;
uint count;
BCMMSG(wlc_hw->wlc->wiphy, "wl%d\n", wlc_hw->unit);
count = (nbytes / sizeof(u32));
W_REG(&regs->objaddr, (OBJADDR_AUTO_INC | OBJADDR_UCM_SEL));
(void)R_REG(&regs->objaddr);
for (i = 0; i < count; i++)
W_REG(&regs->objdata, ucode[i]);
}
static void brcms_c_write_inits(struct brcms_hardware *wlc_hw,
const struct d11init *inits)
{
int i;
volatile u8 *base;
BCMMSG(wlc_hw->wlc->wiphy, "wl%d\n", wlc_hw->unit);
base = (volatile u8 *)wlc_hw->regs;
for (i = 0; inits[i].addr != 0xffff; i++) {
if (inits[i].size == 2)
W_REG((u16 *)(base + inits[i].addr),
inits[i].value);
else if (inits[i].size == 4)
W_REG((u32 *)(base + inits[i].addr),
inits[i].value);
}
}
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);
}
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);
}
void brcms_b_fifoerrors(struct brcms_hardware *wlc_hw)
{
bool fatal = false;
uint unit;
uint intstatus, idx;
d11regs_t *regs = wlc_hw->regs;
struct wiphy *wiphy = wlc_hw->wlc->wiphy;
unit = wlc_hw->unit;
for (idx = 0; idx < NFIFO; idx++) {
/* read intstatus register and ignore any non-error bits */
intstatus =
R_REG(&regs->intctrlregs[idx].intstatus) & I_ERRORS;
if (!intstatus)
continue;
BCMMSG(wlc_hw->wlc->wiphy, "wl%d: intstatus%d 0x%x\n",
unit, idx, intstatus);
if (intstatus & I_RO) {
wiphy_err(wiphy, "wl%d: fifo %d: receive fifo "
"overflow\n", unit, idx);
fatal = true;
}
if (intstatus & I_PC) {
wiphy_err(wiphy, "wl%d: fifo %d: descriptor error\n",
unit, idx);
fatal = true;
}
if (intstatus & I_PD) {
wiphy_err(wiphy, "wl%d: fifo %d: data error\n", unit,
idx);
fatal = true;
}
if (intstatus & I_DE) {
wiphy_err(wiphy, "wl%d: fifo %d: descriptor protocol "
"error\n", unit, idx);
fatal = true;
}
if (intstatus & I_RU) {
wiphy_err(wiphy, "wl%d: fifo %d: receive descriptor "
"underflow\n", idx, unit);
}
if (intstatus & I_XU) {
wiphy_err(wiphy, "wl%d: fifo %d: transmit fifo "
"underflow\n", idx, unit);
fatal = true;
}
if (fatal) {
brcms_c_fatal_error(wlc_hw->wlc); /* big hammer */
break;
} else
W_REG(&regs->intctrlregs[idx].intstatus,
intstatus);
}
}
void brcms_c_intrson(struct brcms_c_info *wlc)
{
struct brcms_hardware *wlc_hw = wlc->hw;
wlc->macintmask = wlc->defmacintmask;
W_REG(&wlc_hw->regs->macintmask, wlc->macintmask);
}
/* callback for siutils.c, which has only wlc handler, no wl
* they both check up, not only because there is no need to off/restore d11 interrupt
* but also because per-port code may require sync with valid interrupt.
*/
static u32 brcms_c_wlintrsoff(struct brcms_c_info *wlc)
{
if (!wlc->hw->up)
return 0;
return brcms_intrsoff(wlc->wl);
}
static void brcms_c_wlintrsrestore(struct brcms_c_info *wlc, u32 macintmask)
{
if (!wlc->hw->up)
return;
brcms_intrsrestore(wlc->wl, 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 */
W_REG(&wlc_hw->regs->macintmask, 0);
(void)R_REG(&wlc_hw->regs->macintmask); /* sync readback */
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;
W_REG(&wlc_hw->regs->macintmask, wlc->macintmask);
}
static void brcms_b_mute(struct brcms_hardware *wlc_hw, bool on, mbool flags)
{
u8 null_ether_addr[ETH_ALEN] = {0, 0, 0, 0, 0, 0};
if (on) {
/* suspend tx fifos */
brcms_b_tx_fifo_suspend(wlc_hw, TX_DATA_FIFO);
brcms_b_tx_fifo_suspend(wlc_hw, TX_CTL_FIFO);
brcms_b_tx_fifo_suspend(wlc_hw, TX_AC_BK_FIFO);
brcms_b_tx_fifo_suspend(wlc_hw, TX_AC_VI_FIFO);
/* zero the address match register so we do not send ACKs */
brcms_b_set_addrmatch(wlc_hw, RCM_MAC_OFFSET,
null_ether_addr);
} else {
/* resume tx fifos */
if (!wlc_hw->wlc->tx_suspended) {
brcms_b_tx_fifo_resume(wlc_hw, TX_DATA_FIFO);
}
brcms_b_tx_fifo_resume(wlc_hw, TX_CTL_FIFO);
brcms_b_tx_fifo_resume(wlc_hw, TX_AC_BK_FIFO);
brcms_b_tx_fifo_resume(wlc_hw, TX_AC_VI_FIFO);
/* Restore address */
brcms_b_set_addrmatch(wlc_hw, RCM_MAC_OFFSET,
wlc_hw->etheraddr);
}
wlc_phy_mute_upd(wlc_hw->band->pi, on, flags);
if (on)
brcms_c_ucode_mute_override_set(wlc_hw);
else
brcms_c_ucode_mute_override_clear(wlc_hw);
}
int brcms_b_xmtfifo_sz_get(struct brcms_hardware *wlc_hw, uint fifo,
uint *blocks)
{
if (fifo >= NFIFO)
return -EINVAL;
*blocks = wlc_hw->xmtfifo_sz[fifo];
return 0;
}
/* brcms_b_tx_fifo_suspended:
* Check the MAC's tx suspend status for a tx fifo.
*
* When the MAC acknowledges a tx suspend, it indicates that no more
* packets will be transmitted out the radio. This is independent of
* DMA channel suspension---the DMA may have finished suspending, or may still
* be pulling data into a tx fifo, by the time the MAC acks the suspend
* request.
*/
static bool brcms_b_tx_fifo_suspended(struct brcms_hardware *wlc_hw,
uint tx_fifo)
{
/* check that a suspend has been requested and is no longer pending */
/*
* for DMA mode, the suspend request is set in xmtcontrol of the DMA engine,
* and the tx fifo suspend at the lower end of the MAC is acknowledged in the
* chnstatus register.
* The tx fifo suspend completion is independent of the DMA suspend completion and
* may be acked before or after the DMA is suspended.
*/
if (dma_txsuspended(wlc_hw->di[tx_fifo]) &&
(R_REG(&wlc_hw->regs->chnstatus) &
(1 << tx_fifo)) == 0)
return true;
return false;
}
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 driver
* so suspend the mac before suspending the FIFO
*/
if (BRCMS_PHY_11N_CAP(wlc_hw->band))
brcms_c_suspend_mac_and_wait(wlc_hw->wlc);
dma_txsuspend(wlc_hw->di[tx_fifo]);
if (BRCMS_PHY_11N_CAP(wlc_hw->band))
brcms_c_enable_mac(wlc_hw->wlc);
}
}
static void brcms_b_tx_fifo_resume(struct brcms_hardware *wlc_hw,
uint tx_fifo)
{
/* BMAC_NOTE: BRCMS_TX_FIFO_ENAB is done in brcms_c_dpc() for DMA case
* but need to be done here for PIO otherwise the watchdog will catch
* the inconsistency and fire
*/
/* Two clients of this code, 11h Quiet period and scanning. */
if (wlc_hw->di[tx_fifo])
dma_txresume(wlc_hw->di[tx_fifo]);
/* allow core to sleep again */
if (wlc_hw->suspended_fifos == 0)
return;
else {
wlc_hw->suspended_fifos &= ~(1 << tx_fifo);
if (wlc_hw->suspended_fifos == 0)
brcms_c_ucode_wake_override_clear(wlc_hw,
BRCMS_WAKE_OVERRIDE_TXFIFO);
}
}
/*
* Read and clear macintmask and macintstatus and intstatus registers.
* This routine should be called with interrupts off
* Return:
* -1 if DEVICEREMOVED(wlc) evaluates to true;
* 0 if the interrupt is not for us, or we are in some special cases;
* device interrupt status bits otherwise.
*/
static inline u32 wlc_intstatus(struct brcms_c_info *wlc, bool in_isr)
{
struct brcms_hardware *wlc_hw = wlc->hw;
d11regs_t *regs = wlc_hw->regs;
u32 macintstatus;
/* macintstatus includes a DMA interrupt summary bit */
macintstatus = R_REG(&regs->macintstatus);
BCMMSG(wlc->wiphy, "wl%d: macintstatus: 0x%x\n", wlc_hw->unit,
macintstatus);
/* detect cardbus removed, in power down(suspend) and in reset */
if (DEVICEREMOVED(wlc))
return -1;
/* DEVICEREMOVED succeeds even when the core is still resetting,
* handle that case here.
*/
if (macintstatus == 0xffffffff)
return 0;
/* defer unsolicited interrupts */
macintstatus &= (in_isr ? wlc->macintmask : wlc->defmacintmask);
/* if not for us */
if (macintstatus == 0)
return 0;
/* interrupts are already turned off for CFE build
* Caution: For CFE Turning off the interrupts again has some undesired
* consequences
*/
/* turn off the interrupts */
W_REG(&regs->macintmask, 0);
(void)R_REG(&regs->macintmask); /* sync readback */
wlc->macintmask = 0;
/* clear device interrupts */
W_REG(&regs->macintstatus, macintstatus);
/* MI_DMAINT is indication of non-zero intstatus */
if (macintstatus & MI_DMAINT) {
/*
* only fifo interrupt enabled is I_RI in
* RX_FIFO. If MI_DMAINT is set, assume it
* is set and clear the interrupt.
*/
W_REG(&regs->intctrlregs[RX_FIFO].intstatus,
DEF_RXINTMASK);
}
return macintstatus;
}
/* Update wlc->macintstatus and wlc->intstatus[]. */
/* Return true if they are updated successfully. false otherwise */
bool brcms_c_intrsupd(struct brcms_c_info *wlc)
{
u32 macintstatus;
/* read and clear macintstatus and intstatus registers */
macintstatus = wlc_intstatus(wlc, false);
/* device is removed */
if (macintstatus == 0xffffffff)
return false;
/* update interrupt status in software */
wlc->macintstatus |= macintstatus;
return true;
}
/*
* First-level interrupt processing.
* Return true if this was our interrupt, false otherwise.
* *wantdpc will be set to true if further brcms_c_dpc() processing is required,
* false otherwise.
*/
bool brcms_c_isr(struct brcms_c_info *wlc, bool *wantdpc)
{
struct brcms_hardware *wlc_hw = wlc->hw;
u32 macintstatus;
*wantdpc = false;
if (!wlc_hw->up || !wlc->macintmask)
return false;
/* read and clear macintstatus and intstatus registers */
macintstatus = wlc_intstatus(wlc, true);
if (macintstatus == 0xffffffff)
wiphy_err(wlc->wiphy, "DEVICEREMOVED detected in the ISR code"
" path\n");
/* it is not for us */
if (macintstatus == 0)
return false;
*wantdpc = true;
/* save interrupt status bits */
wlc->macintstatus = macintstatus;
return true;
}
static bool
brcms_b_dotxstatus(struct brcms_hardware *wlc_hw, struct tx_status *txs,
u32 s2)
{
/* 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)) {
return false;
}
return brcms_c_dotxstatus(wlc_hw->wlc, txs, s2);
}
/* 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)
{
bool morepending = false;
struct brcms_c_info *wlc = wlc_hw->wlc;
d11regs_t *regs;
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 ? wlc->pub->tunables->txsbnd : -1;
BCMMSG(wlc->wiphy, "wl%d\n", wlc_hw->unit);
txs = &txstatus;
regs = wlc_hw->regs;
while (!(*fatal)
&& (s1 = R_REG(&regs->frmtxstatus)) & TXS_V) {
if (s1 == 0xffffffff) {
wiphy_err(wlc->wiphy, "wl%d: %s: dead chip\n",
wlc_hw->unit, __func__);
return morepending;
}
s2 = R_REG(&regs->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_b_dotxstatus(wlc_hw, txs, s2);
/* !give others some time to run! */
if (++n >= max_tx_num)
break;
}
if (*fatal)
return 0;
if (n >= max_tx_num)
morepending = true;
if (!pktq_empty(&wlc->pkt_queue->q))
brcms_c_send_q(wlc);
return morepending;
}
void brcms_c_suspend_mac_and_wait(struct brcms_c_info *wlc)
{
struct brcms_hardware *wlc_hw = wlc->hw;
d11regs_t *regs = wlc_hw->regs;
u32 mc, mi;
struct wiphy *wiphy = wlc->wiphy;
BCMMSG(wlc->wiphy, "wl%d: bandunit %d\n", wlc_hw->unit,
wlc_hw->band->bandunit);
/*
* Track overlapping suspend requests
*/
wlc_hw->mac_suspend_depth++;
if (wlc_hw->mac_suspend_depth > 1)
return;
/* force the core awake */
brcms_c_ucode_wake_override_set(wlc_hw, BRCMS_WAKE_OVERRIDE_MACSUSPEND);
mc = R_REG(&regs->maccontrol);
if (mc == 0xffffffff) {
wiphy_err(wiphy, "wl%d: %s: dead chip\n", wlc_hw->unit,
__func__);
brcms_down(wlc->wl);
return;
}
WARN_ON(mc & MCTL_PSM_JMP_0);
WARN_ON(!(mc & MCTL_PSM_RUN));
WARN_ON(!(mc & MCTL_EN_MAC));
mi = R_REG(&regs->macintstatus);
if (mi == 0xffffffff) {
wiphy_err(wiphy, "wl%d: %s: dead chip\n", wlc_hw->unit,
__func__);
brcms_down(wlc->wl);
return;
}
WARN_ON(mi & MI_MACSSPNDD);
brcms_b_mctrl(wlc_hw, MCTL_EN_MAC, 0);
SPINWAIT(!(R_REG(&regs->macintstatus) & MI_MACSSPNDD),
BRCMS_MAX_MAC_SUSPEND);
if (!(R_REG(&regs->macintstatus) & MI_MACSSPNDD)) {
wiphy_err(wiphy, "wl%d: wlc_suspend_mac_and_wait: waited %d uS"
" and MI_MACSSPNDD is still not on.\n",
wlc_hw->unit, BRCMS_MAX_MAC_SUSPEND);
wiphy_err(wiphy, "wl%d: psmdebug 0x%08x, phydebug 0x%08x, "
"psm_brc 0x%04x\n", wlc_hw->unit,
R_REG(&regs->psmdebug),
R_REG(&regs->phydebug),
R_REG(&regs->psm_brc));
}
mc = R_REG(&regs->maccontrol);
if (mc == 0xffffffff) {
wiphy_err(wiphy, "wl%d: %s: dead chip\n", wlc_hw->unit,
__func__);
brcms_down(wlc->wl);
return;
}
WARN_ON(mc & MCTL_PSM_JMP_0);
WARN_ON(!(mc & MCTL_PSM_RUN));
WARN_ON(mc & MCTL_EN_MAC);
}
void brcms_c_enable_mac(struct brcms_c_info *wlc)
{
struct brcms_hardware *wlc_hw = wlc->hw;
d11regs_t *regs = wlc_hw->regs;
u32 mc, mi;
BCMMSG(wlc->wiphy, "wl%d: bandunit %d\n", wlc_hw->unit,
wlc->band->bandunit);
/*
* Track overlapping suspend requests
*/
wlc_hw->mac_suspend_depth--;
if (wlc_hw->mac_suspend_depth > 0)
return;
mc = R_REG(&regs->maccontrol);
WARN_ON(mc & MCTL_PSM_JMP_0);
WARN_ON(mc & MCTL_EN_MAC);
WARN_ON(!(mc & MCTL_PSM_RUN));
brcms_b_mctrl(wlc_hw, MCTL_EN_MAC, MCTL_EN_MAC);
W_REG(&regs->macintstatus, MI_MACSSPNDD);
mc = R_REG(&regs->maccontrol);
WARN_ON(mc & MCTL_PSM_JMP_0);
WARN_ON(!(mc & MCTL_EN_MAC));
WARN_ON(!(mc & MCTL_PSM_RUN));
mi = R_REG(&regs->macintstatus);
WARN_ON(mi & MI_MACSSPNDD);
brcms_c_ucode_wake_override_clear(wlc_hw,
BRCMS_WAKE_OVERRIDE_MACSUSPEND);
}
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);
}
}
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));
}
void brcms_b_band_stf_ss_set(struct brcms_hardware *wlc_hw, u8 stf_mode)
{
wlc_hw->hw_stf_ss_opmode = stf_mode;
if (wlc_hw->clk)
brcms_upd_ofdm_pctl1_table(wlc_hw);
}
void
brcms_b_read_tsf(struct brcms_hardware *wlc_hw, u32 *tsf_l_ptr,
u32 *tsf_h_ptr)
{
d11regs_t *regs = wlc_hw->regs;
/* read the tsf timer low, then high to get an atomic read */
*tsf_l_ptr = R_REG(&regs->tsf_timerlow);
*tsf_h_ptr = R_REG(&regs->tsf_timerhigh);
return;
}
static bool brcms_b_validate_chip_access(struct brcms_hardware *wlc_hw)
{
d11regs_t *regs;
u32 w, val;
struct wiphy *wiphy = wlc_hw->wlc->wiphy;
BCMMSG(wiphy, "wl%d\n", wlc_hw->unit);
regs = wlc_hw->regs;
/* Validate dchip register access */
W_REG(&regs->objaddr, OBJADDR_SHM_SEL | 0);
(void)R_REG(&regs->objaddr);
w = R_REG(&regs->objdata);
/* Can we write and read back a 32bit register? */
W_REG(&regs->objaddr, OBJADDR_SHM_SEL | 0);
(void)R_REG(&regs->objaddr);
W_REG(&regs->objdata, (u32) 0xaa5555aa);
W_REG(&regs->objaddr, OBJADDR_SHM_SEL | 0);
(void)R_REG(&regs->objaddr);
val = R_REG(&regs->objdata);
if (val != (u32) 0xaa5555aa) {
wiphy_err(wiphy, "wl%d: validate_chip_access: SHM = 0x%x, "
"expected 0xaa5555aa\n", wlc_hw->unit, val);
return false;
}
W_REG(&regs->objaddr, OBJADDR_SHM_SEL | 0);
(void)R_REG(&regs->objaddr);
W_REG(&regs->objdata, (u32) 0x55aaaa55);
W_REG(&regs->objaddr, OBJADDR_SHM_SEL | 0);
(void)R_REG(&regs->objaddr);
val = R_REG(&regs->objdata);
if (val != (u32) 0x55aaaa55) {
wiphy_err(wiphy, "wl%d: validate_chip_access: SHM = 0x%x, "
"expected 0x55aaaa55\n", wlc_hw->unit, val);
return false;
}
W_REG(&regs->objaddr, OBJADDR_SHM_SEL | 0);
(void)R_REG(&regs->objaddr);
W_REG(&regs->objdata, w);
/* clear CFPStart */
W_REG(&regs->tsf_cfpstart, 0);
w = R_REG(&regs->maccontrol);
if ((w != (MCTL_IHR_EN | MCTL_WAKE)) &&
(w != (MCTL_IHR_EN | MCTL_GMODE | MCTL_WAKE))) {
wiphy_err(wiphy, "wl%d: validate_chip_access: maccontrol = "
"0x%x, expected 0x%x or 0x%x\n", wlc_hw->unit, w,
(MCTL_IHR_EN | MCTL_WAKE),
(MCTL_IHR_EN | MCTL_GMODE | MCTL_WAKE));
return false;
}
return true;
}
#define PHYPLL_WAIT_US 100000
void brcms_b_core_phypll_ctl(struct brcms_hardware *wlc_hw, bool on)
{
d11regs_t *regs;
u32 tmp;
BCMMSG(wlc_hw->wlc->wiphy, "wl%d\n", wlc_hw->unit);
tmp = 0;
regs = wlc_hw->regs;
if (on) {
if ((wlc_hw->sih->chip == BCM4313_CHIP_ID)) {
OR_REG(&regs->clk_ctl_st,
(CCS_ERSRC_REQ_HT | CCS_ERSRC_REQ_D11PLL |
CCS_ERSRC_REQ_PHYPLL));
SPINWAIT((R_REG(&regs->clk_ctl_st) &
(CCS_ERSRC_AVAIL_HT)) != (CCS_ERSRC_AVAIL_HT),
PHYPLL_WAIT_US);
tmp = R_REG(&regs->clk_ctl_st);
if ((tmp & (CCS_ERSRC_AVAIL_HT)) !=
(CCS_ERSRC_AVAIL_HT)) {
wiphy_err(wlc_hw->wlc->wiphy, "%s: turn on PHY"
" PLL failed\n", __func__);
}
} else {
OR_REG(&regs->clk_ctl_st,
(CCS_ERSRC_REQ_D11PLL | CCS_ERSRC_REQ_PHYPLL));
SPINWAIT((R_REG(&regs->clk_ctl_st) &
(CCS_ERSRC_AVAIL_D11PLL |
CCS_ERSRC_AVAIL_PHYPLL)) !=
(CCS_ERSRC_AVAIL_D11PLL |
CCS_ERSRC_AVAIL_PHYPLL), PHYPLL_WAIT_US);
tmp = R_REG(&regs->clk_ctl_st);
if ((tmp &
(CCS_ERSRC_AVAIL_D11PLL | CCS_ERSRC_AVAIL_PHYPLL))
!=
(CCS_ERSRC_AVAIL_D11PLL | CCS_ERSRC_AVAIL_PHYPLL)) {
wiphy_err(wlc_hw->wlc->wiphy, "%s: turn on "
"PHY PLL failed\n", __func__);
}
}
} else {
/* Since the PLL may be shared, other cores can still be requesting it;
* so we'll deassert the request but not wait for status to comply.
*/
AND_REG(&regs->clk_ctl_st, ~CCS_ERSRC_REQ_PHYPLL);
tmp = R_REG(&regs->clk_ctl_st);
}
}
void brcms_c_coredisable(struct brcms_hardware *wlc_hw)
{
bool dev_gone;
BCMMSG(wlc_hw->wlc->wiphy, "wl%d\n", wlc_hw->unit);
dev_gone = DEVICEREMOVED(wlc_hw->wlc);
if (dev_gone)
return;
if (wlc_hw->noreset)
return;
/* radio off */
wlc_phy_switch_radio(wlc_hw->band->pi, OFF);
/* turn off analog core */
wlc_phy_anacore(wlc_hw->band->pi, OFF);
/* turn off PHYPLL to save power */
brcms_b_core_phypll_ctl(wlc_hw, false);
/* No need to set wlc->pub->radio_active = OFF
* because this function needs down capability and
* radio_active is designed for BCMNODOWN.
*/
/* remove gpio controls */
if (wlc_hw->ucode_dbgsel)
ai_gpiocontrol(wlc_hw->sih, ~0, 0, GPIO_DRV_PRIORITY);
wlc_hw->clk = false;
ai_core_disable(wlc_hw->sih, 0);
wlc_phy_hw_clk_state_upd(wlc_hw->band->pi, false);
}
/* power both the pll and external oscillator on/off */
static void brcms_b_xtal(struct brcms_hardware *wlc_hw, bool want)
{
BCMMSG(wlc_hw->wlc->wiphy, "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;
if (wlc_hw->sih)
ai_clkctl_xtal(wlc_hw->sih, XTAL | PLL, want);
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);
}
}
static void brcms_c_flushqueues(struct brcms_c_info *wlc)
{
struct brcms_hardware *wlc_hw = wlc->hw;
uint i;
wlc->txpend16165war = 0;
/* free any posted tx packets */
for (i = 0; i < NFIFO; i++)
if (wlc_hw->di[i]) {
dma_txreclaim(wlc_hw->di[i], DMA_RANGE_ALL);
TXPKTPENDCLR(wlc, i);
BCMMSG(wlc->wiphy, "pktpend fifo %d clrd\n", i);
}
/* free any posted rx packets */
dma_rxreclaim(wlc_hw->di[RX_FIFO]);
}
u16 brcms_b_read_shm(struct brcms_hardware *wlc_hw, uint offset)
{
return brcms_b_read_objmem(wlc_hw, offset, OBJADDR_SHM_SEL);
}
void brcms_b_write_shm(struct brcms_hardware *wlc_hw, uint offset, u16 v)
{
brcms_b_write_objmem(wlc_hw, offset, v, OBJADDR_SHM_SEL);
}
static u16
brcms_b_read_objmem(struct brcms_hardware *wlc_hw, uint offset, u32 sel)
{
d11regs_t *regs = wlc_hw->regs;
volatile u16 *objdata_lo = (volatile u16 *)&regs->objdata;
volatile u16 *objdata_hi = objdata_lo + 1;
u16 v;
W_REG(&regs->objaddr, sel | (offset >> 2));
(void)R_REG(&regs->objaddr);
if (offset & 2) {
v = R_REG(objdata_hi);
} else {
v = R_REG(objdata_lo);
}
return v;
}
static void
brcms_b_write_objmem(struct brcms_hardware *wlc_hw, uint offset, u16 v,
u32 sel)
{
d11regs_t *regs = wlc_hw->regs;
volatile u16 *objdata_lo = (volatile u16 *)&regs->objdata;
volatile u16 *objdata_hi = objdata_lo + 1;
W_REG(&regs->objaddr, sel | (offset >> 2));
(void)R_REG(&regs->objaddr);
if (offset & 2) {
W_REG(objdata_hi, v);
} else {
W_REG(objdata_lo, v);
}
}
/* Copy a buffer to shared memory of specified type .
* SHM 'offset' needs to be an even address and
* Buffer length 'len' must be an even number of bytes
* 'sel' selects the type of memory
*/
void
brcms_b_copyto_objmem(struct brcms_hardware *wlc_hw, uint offset,
const void *buf, int len, u32 sel)
{
u16 v;
const u8 *p = (const u8 *)buf;
int i;
if (len <= 0 || (offset & 1) || (len & 1))
return;
for (i = 0; i < len; i += 2) {
v = p[i] | (p[i + 1] << 8);
brcms_b_write_objmem(wlc_hw, offset + i, v, sel);
}
}
/* Copy a piece of shared memory of specified type to a buffer .
* SHM 'offset' needs to be an even address and
* Buffer length 'len' must be an even number of bytes
* 'sel' selects the type of memory
*/
void
brcms_b_copyfrom_objmem(struct brcms_hardware *wlc_hw, uint offset, void *buf,
int len, u32 sel)
{
u16 v;
u8 *p = (u8 *) buf;
int i;
if (len <= 0 || (offset & 1) || (len & 1))
return;
for (i = 0; i < len; i += 2) {
v = brcms_b_read_objmem(wlc_hw, offset + i, sel);
p[i] = v & 0xFF;
p[i + 1] = (v >> 8) & 0xFF;
}
}
void brcms_b_copyfrom_vars(struct brcms_hardware *wlc_hw, char **buf,
uint *len)
{
BCMMSG(wlc_hw->wlc->wiphy, "nvram vars totlen=%d\n",
wlc_hw->vars_size);
*buf = wlc_hw->vars;
*len = wlc_hw->vars_size;
}
void brcms_b_retrylimit_upd(struct brcms_hardware *wlc_hw, u16 SRL, u16 LRL)
{
wlc_hw->SRL = SRL;
wlc_hw->LRL = LRL;
/* write retry limit to SCR, shouldn't need to suspend */
if (wlc_hw->up) {
W_REG(&wlc_hw->regs->objaddr,
OBJADDR_SCR_SEL | S_DOT11_SRC_LMT);
(void)R_REG(&wlc_hw->regs->objaddr);
W_REG(&wlc_hw->regs->objdata, wlc_hw->SRL);
W_REG(&wlc_hw->regs->objaddr,
OBJADDR_SCR_SEL | S_DOT11_LRC_LMT);
(void)R_REG(&wlc_hw->regs->objaddr);
W_REG(&wlc_hw->regs->objdata, wlc_hw->LRL);
}
}
void brcms_b_pllreq(struct brcms_hardware *wlc_hw, bool set, mbool req_bit)
{
if (set) {
if (mboolisset(wlc_hw->pllreq, req_bit))
return;
mboolset(wlc_hw->pllreq, req_bit);
if (mboolisset(wlc_hw->pllreq, BRCMS_PLLREQ_FLIP)) {
if (!wlc_hw->sbclk) {
brcms_b_xtal(wlc_hw, ON);
}
}
} else {
if (!mboolisset(wlc_hw->pllreq, req_bit))
return;
mboolclr(wlc_hw->pllreq, req_bit);
if (mboolisset(wlc_hw->pllreq, BRCMS_PLLREQ_FLIP)) {
if (wlc_hw->sbclk) {
brcms_b_xtal(wlc_hw, OFF);
}
}
}
return;
}
u16 brcms_b_rate_shm_offset(struct brcms_hardware *wlc_hw, u8 rate)
{
u16 table_ptr;
u8 phy_rate, index;
/* get the phy specific rate encoding for the PLCP SIGNAL field */
if (IS_OFDM(rate))
table_ptr = M_RT_DIRMAP_A;
else
table_ptr = M_RT_DIRMAP_B;
/* for a given rate, the LS-nibble of the PLCP SIGNAL field is
* the index into the rate table.
*/
phy_rate = rate_info[rate] & BRCMS_RATE_MASK;
index = phy_rate & 0xf;
/* Find the SHM pointer to the rate table entry by looking in the
* Direct-map Table
*/
return 2 * brcms_b_read_shm(wlc_hw, table_ptr + (index * 2));
}
void brcms_b_antsel_set(struct brcms_hardware *wlc_hw, u32 antsel_avail)
{
wlc_hw->antsel_avail = antsel_avail;
}