From b2f37e7e0be3ad2db87b9b70ce21d463c9bf9d99 Mon Sep 17 00:00:00 2001 From: Franky Lin Date: Tue, 13 Sep 2011 09:49:41 +0200 Subject: [PATCH] staging: brcm80211: remove static function declaration in dhd_sdio Reshuffle function order in dhd_sdio of fullmac to get rid of static function declaration Reported-by: Johannes Berg Reviewed-by: Arend van Spriel Reviewed-by: Roland Vossen Signed-off-by: Roland Vossen Signed-off-by: Greg Kroah-Hartman --- drivers/staging/brcm80211/brcmfmac/dhd_sdio.c | 4622 ++++++++--------- 1 file changed, 2284 insertions(+), 2338 deletions(-) diff --git a/drivers/staging/brcm80211/brcmfmac/dhd_sdio.c b/drivers/staging/brcm80211/brcmfmac/dhd_sdio.c index 0de4dc64b9e1..680b23265f34 100644 --- a/drivers/staging/brcm80211/brcmfmac/dhd_sdio.c +++ b/drivers/staging/brcm80211/brcmfmac/dhd_sdio.c @@ -855,58 +855,6 @@ w_sdreg32(struct brcmf_bus *bus, u32 regval, u32 reg_offset, u32 *retryvar) #define HOSTINTMASK (I_HMB_SW_MASK | I_CHIPACTIVE) -#ifdef BCMDBG -static int brcmf_sdbrcm_checkdied(struct brcmf_bus *bus, u8 *data, uint size); -static int brcmf_sdbrcm_mem_dump(struct brcmf_bus *bus); -#endif /* BCMDBG */ -static int brcmf_sdbrcm_download_state(struct brcmf_bus *bus, bool enter); - -static void brcmf_sdbrcm_release(struct brcmf_bus *bus); -static void brcmf_sdbrcm_release_malloc(struct brcmf_bus *bus); -static bool brcmf_sdbrcm_chipmatch(u16 chipid); -static bool brcmf_sdbrcm_probe_attach(struct brcmf_bus *bus, u32 regsva); -static bool brcmf_sdbrcm_probe_malloc(struct brcmf_bus *bus); -static bool brcmf_sdbrcm_probe_init(struct brcmf_bus *bus); -static void brcmf_sdbrcm_release_dongle(struct brcmf_bus *bus); - -static uint brcmf_process_nvram_vars(char *varbuf, uint len); - -static void brcmf_sdbrcm_setmemsize(struct brcmf_bus *bus, int mem_size); -static int brcmf_sdbrcm_send_buf(struct brcmf_bus *bus, u32 addr, uint fn, - uint flags, u8 *buf, uint nbytes, - struct sk_buff *pkt); - -static bool brcmf_sdbrcm_download_firmware(struct brcmf_bus *bus); -static int _brcmf_sdbrcm_download_firmware(struct brcmf_bus *bus); - -static int brcmf_sdbrcm_download_code_file(struct brcmf_bus *bus); -static int brcmf_sdbrcm_download_nvram(struct brcmf_bus *bus); - -static void -brcmf_sdbrcm_chip_disablecore(struct brcmf_sdio_dev *sdiodev, u32 corebase); - -static int brcmf_sdbrcm_chip_attach(struct brcmf_bus *bus, u32 regs); - -static void -brcmf_sdbrcm_chip_resetcore(struct brcmf_sdio_dev *sdiodev, u32 corebase); - -static void brcmf_sdbrcm_sdiod_drive_strength_init(struct brcmf_bus *bus, - u32 drivestrength); -static void brcmf_sdbrcm_chip_detach(struct brcmf_bus *bus); -static void brcmf_sdbrcm_wait_for_event(struct brcmf_bus *bus, bool *lockvar); -static void brcmf_sdbrcm_wait_event_wakeup(struct brcmf_bus *bus); -static void brcmf_sdbrcm_watchdog(unsigned long data); -static int brcmf_sdbrcm_watchdog_thread(void *data); -static int brcmf_sdbrcm_dpc_thread(void *data); -static void brcmf_sdbrcm_dpc_tasklet(unsigned long data); -static void brcmf_sdbrcm_sched_dpc(struct brcmf_bus *bus); -static void brcmf_sdbrcm_sdlock(struct brcmf_bus *bus); -static void brcmf_sdbrcm_sdunlock(struct brcmf_bus *bus); -static int brcmf_sdbrcm_get_image(char *buf, int len, struct brcmf_bus *bus); -static int brcmf_sdbrcm_ioctl_resp_wait(struct brcmf_bus *bus, uint *condition, - bool *pending); -static int brcmf_sdbrcm_ioctl_resp_wake(struct brcmf_bus *bus); - /* Packet free applicable unconditionally for sdio and sdspi. * Conditional if bufpool was present for gspi bus. */ @@ -927,6 +875,22 @@ static void brcmf_sdbrcm_setmemsize(struct brcmf_bus *bus, int mem_size) bus->ramsize = brcmf_dongle_memsize; } +static void brcmf_sdbrcm_sdlock(struct brcmf_bus *bus) +{ + if (bus->threads_only) + down(&bus->sdsem); + else + spin_lock_bh(&bus->sdlock); +} + +static void brcmf_sdbrcm_sdunlock(struct brcmf_bus *bus) +{ + if (bus->threads_only) + up(&bus->sdsem); + else + spin_unlock_bh(&bus->sdlock); +} + /* Turn backplane clock on or off */ static int brcmf_sdbrcm_htclk(struct brcmf_bus *bus, bool on, bool pendok) { @@ -1217,1225 +1181,80 @@ static void bus_wake(struct brcmf_bus *bus) brcmf_sdbrcm_bussleep(bus, false); } -/* Writes a HW/SW header into the packet and sends it. */ -/* Assumes: (a) header space already there, (b) caller holds lock */ -static int brcmf_sdbrcm_txpkt(struct brcmf_bus *bus, struct sk_buff *pkt, - uint chan, bool free_pkt) +static u32 brcmf_sdbrcm_hostmail(struct brcmf_bus *bus) { - int ret; - u8 *frame; - u16 len, pad = 0; - u32 swheader; - uint retries = 0; - struct sk_buff *new; - int i; - - brcmf_dbg(TRACE, "Enter\n"); - - if (bus->drvr->dongle_reset) { - ret = -EPERM; - goto done; - } - - frame = (u8 *) (pkt->data); - - /* Add alignment padding, allocate new packet if needed */ - pad = ((unsigned long)frame % BRCMF_SDALIGN); - if (pad) { - if (skb_headroom(pkt) < pad) { - brcmf_dbg(INFO, "insufficient headroom %d for %d pad\n", - skb_headroom(pkt), pad); - bus->drvr->tx_realloc++; - new = brcmu_pkt_buf_get_skb(pkt->len + BRCMF_SDALIGN); - if (!new) { - brcmf_dbg(ERROR, "couldn't allocate new %d-byte packet\n", - pkt->len + BRCMF_SDALIGN); - ret = -ENOMEM; - goto done; - } - - pkt_align(new, pkt->len, BRCMF_SDALIGN); - memcpy(new->data, pkt->data, pkt->len); - if (free_pkt) - brcmu_pkt_buf_free_skb(pkt); - /* free the pkt if canned one is not used */ - free_pkt = true; - pkt = new; - frame = (u8 *) (pkt->data); - /* precondition: (frame % BRCMF_SDALIGN) == 0) */ - pad = 0; - } else { - skb_push(pkt, pad); - frame = (u8 *) (pkt->data); - /* precondition: pad + SDPCM_HDRLEN <= pkt->len */ - memset(frame, 0, pad + SDPCM_HDRLEN); - } - } - /* precondition: pad < BRCMF_SDALIGN */ - - /* Hardware tag: 2 byte len followed by 2 byte ~len check (all LE) */ - len = (u16) (pkt->len); - *(u16 *) frame = cpu_to_le16(len); - *(((u16 *) frame) + 1) = cpu_to_le16(~len); - - /* Software tag: channel, sequence number, data offset */ - swheader = - ((chan << SDPCM_CHANNEL_SHIFT) & SDPCM_CHANNEL_MASK) | bus->tx_seq | - (((pad + - SDPCM_HDRLEN) << SDPCM_DOFFSET_SHIFT) & SDPCM_DOFFSET_MASK); - - put_unaligned_le32(swheader, frame + SDPCM_FRAMETAG_LEN); - put_unaligned_le32(0, frame + SDPCM_FRAMETAG_LEN + sizeof(swheader)); - -#ifdef BCMDBG - tx_packets[pkt->priority]++; - if (BRCMF_BYTES_ON() && - (((BRCMF_CTL_ON() && (chan == SDPCM_CONTROL_CHANNEL)) || - (BRCMF_DATA_ON() && (chan != SDPCM_CONTROL_CHANNEL))))) { - printk(KERN_DEBUG "Tx Frame:\n"); - print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, frame, len); - } else if (BRCMF_HDRS_ON()) { - printk(KERN_DEBUG "TxHdr:\n"); - print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, - frame, min_t(u16, len, 16)); - } -#endif - - /* Raise len to next SDIO block to eliminate tail command */ - if (bus->roundup && bus->blocksize && (len > bus->blocksize)) { - u16 pad = bus->blocksize - (len % bus->blocksize); - if ((pad <= bus->roundup) && (pad < bus->blocksize)) - len += pad; - } else if (len % BRCMF_SDALIGN) { - len += BRCMF_SDALIGN - (len % BRCMF_SDALIGN); - } - - /* Some controllers have trouble with odd bytes -- round to even */ - if (forcealign && (len & (ALIGNMENT - 1))) - len = roundup(len, ALIGNMENT); - - do { - ret = brcmf_sdbrcm_send_buf(bus, bus->sdiodev->sbwad, - SDIO_FUNC_2, F2SYNC, frame, - len, pkt); - bus->f2txdata++; - - if (ret < 0) { - /* On failure, abort the command - and terminate the frame */ - brcmf_dbg(INFO, "sdio error %d, abort command and terminate frame\n", - ret); - bus->tx_sderrs++; - - brcmf_sdcard_abort(bus->sdiodev, SDIO_FUNC_2); - brcmf_sdcard_cfg_write(bus->sdiodev, SDIO_FUNC_1, - SBSDIO_FUNC1_FRAMECTRL, SFC_WF_TERM, - NULL); - bus->f1regdata++; - - for (i = 0; i < 3; i++) { - u8 hi, lo; - hi = brcmf_sdcard_cfg_read(bus->sdiodev, - SDIO_FUNC_1, - SBSDIO_FUNC1_WFRAMEBCHI, - NULL); - lo = brcmf_sdcard_cfg_read(bus->sdiodev, - SDIO_FUNC_1, - SBSDIO_FUNC1_WFRAMEBCLO, - NULL); - bus->f1regdata += 2; - if ((hi == 0) && (lo == 0)) - break; - } - - } - if (ret == 0) - bus->tx_seq = (bus->tx_seq + 1) % SDPCM_SEQUENCE_WRAP; - - } while ((ret < 0) && retrydata && retries++ < TXRETRIES); - -done: - /* restore pkt buffer pointer before calling tx complete routine */ - skb_pull(pkt, SDPCM_HDRLEN + pad); - brcmf_sdbrcm_sdunlock(bus); - brcmf_txcomplete(bus->drvr, pkt, ret != 0); - brcmf_sdbrcm_sdlock(bus); - - if (free_pkt) - brcmu_pkt_buf_free_skb(pkt); - - return ret; -} - -int brcmf_sdbrcm_bus_txdata(struct brcmf_bus *bus, struct sk_buff *pkt) -{ - int ret = -EBADE; - uint datalen, prec; - - brcmf_dbg(TRACE, "Enter\n"); - - datalen = pkt->len; - - /* Add space for the header */ - skb_push(pkt, SDPCM_HDRLEN); - /* precondition: IS_ALIGNED((unsigned long)(pkt->data), 2) */ - - prec = prio2prec((pkt->priority & PRIOMASK)); - - /* Check for existing queue, current flow-control, - pending event, or pending clock */ - if (brcmf_deferred_tx || bus->fcstate || pktq_len(&bus->txq) - || bus->dpc_sched || (!data_ok(bus)) - || (bus->flowcontrol & NBITVAL(prec)) - || (bus->clkstate != CLK_AVAIL)) { - brcmf_dbg(TRACE, "deferring pktq len %d\n", - pktq_len(&bus->txq)); - bus->fcqueued++; - - /* Priority based enq */ - spin_lock_bh(&bus->txqlock); - if (brcmf_c_prec_enq(bus->drvr, &bus->txq, pkt, prec) == - false) { - skb_pull(pkt, SDPCM_HDRLEN); - brcmf_txcomplete(bus->drvr, pkt, false); - brcmu_pkt_buf_free_skb(pkt); - brcmf_dbg(ERROR, "out of bus->txq !!!\n"); - ret = -ENOSR; - } else { - ret = 0; - } - spin_unlock_bh(&bus->txqlock); - - if (pktq_len(&bus->txq) >= TXHI) - brcmf_txflowcontrol(bus->drvr, 0, ON); - -#ifdef BCMDBG - if (pktq_plen(&bus->txq, prec) > qcount[prec]) - qcount[prec] = pktq_plen(&bus->txq, prec); -#endif - /* Schedule DPC if needed to send queued packet(s) */ - if (brcmf_deferred_tx && !bus->dpc_sched) { - bus->dpc_sched = true; - brcmf_sdbrcm_sched_dpc(bus); - } - } else { - /* Lock: we're about to use shared data/code (and SDIO) */ - brcmf_sdbrcm_sdlock(bus); - - /* Otherwise, send it now */ - bus_wake(bus); - /* Make sure back plane ht clk is on, no pending allowed */ - brcmf_sdbrcm_clkctl(bus, CLK_AVAIL, true); - - brcmf_dbg(TRACE, "calling txpkt\n"); - ret = brcmf_sdbrcm_txpkt(bus, pkt, SDPCM_DATA_CHANNEL, true); - if (ret) - bus->drvr->tx_errors++; - else - bus->drvr->dstats.tx_bytes += datalen; - - if (bus->idletime == BRCMF_IDLE_IMMEDIATE && - !bus->dpc_sched) { - bus->activity = false; - brcmf_sdbrcm_clkctl(bus, CLK_NONE, true); - } - - brcmf_sdbrcm_sdunlock(bus); - } - - return ret; -} - -static uint brcmf_sdbrcm_sendfromq(struct brcmf_bus *bus, uint maxframes) -{ - struct sk_buff *pkt; u32 intstatus = 0; + u32 hmb_data; + u8 fcbits; uint retries = 0; - int ret = 0, prec_out; - uint cnt = 0; - uint datalen; - u8 tx_prec_map; - - struct brcmf_pub *drvr = bus->drvr; brcmf_dbg(TRACE, "Enter\n"); - tx_prec_map = ~bus->flowcontrol; + /* Read mailbox data and ack that we did so */ + r_sdreg32(bus, &hmb_data, + offsetof(struct sdpcmd_regs, tohostmailboxdata), &retries); - /* Send frames until the limit or some other event */ - for (cnt = 0; (cnt < maxframes) && data_ok(bus); cnt++) { - spin_lock_bh(&bus->txqlock); - pkt = brcmu_pktq_mdeq(&bus->txq, tx_prec_map, &prec_out); - if (pkt == NULL) { - spin_unlock_bh(&bus->txqlock); - break; - } - spin_unlock_bh(&bus->txqlock); - datalen = pkt->len - SDPCM_HDRLEN; + if (retries <= retry_limit) + w_sdreg32(bus, SMB_INT_ACK, + offsetof(struct sdpcmd_regs, tosbmailbox), &retries); + bus->f1regdata += 2; - ret = brcmf_sdbrcm_txpkt(bus, pkt, SDPCM_DATA_CHANNEL, true); - if (ret) - bus->drvr->tx_errors++; - else - bus->drvr->dstats.tx_bytes += datalen; + /* Dongle recomposed rx frames, accept them again */ + if (hmb_data & HMB_DATA_NAKHANDLED) { + brcmf_dbg(INFO, "Dongle reports NAK handled, expect rtx of %d\n", + bus->rx_seq); + if (!bus->rxskip) + brcmf_dbg(ERROR, "unexpected NAKHANDLED!\n"); - /* In poll mode, need to check for other events */ - if (!bus->intr && cnt) { - /* Check device status, signal pending interrupt */ - r_sdreg32(bus, &intstatus, - offsetof(struct sdpcmd_regs, intstatus), - &retries); - bus->f2txdata++; - if (brcmf_sdcard_regfail(bus->sdiodev)) - break; - if (intstatus & bus->hostintmask) - bus->ipend = true; - } + bus->rxskip = false; + intstatus |= I_HMB_FRAME_IND; } - /* Deflow-control stack if needed */ - if (drvr->up && (drvr->busstate == BRCMF_BUS_DATA) && - drvr->txoff && (pktq_len(&bus->txq) < TXLOW)) - brcmf_txflowcontrol(drvr, 0, OFF); - - return cnt; -} - -int -brcmf_sdbrcm_bus_txctl(struct brcmf_bus *bus, unsigned char *msg, uint msglen) -{ - u8 *frame; - u16 len; - u32 swheader; - uint retries = 0; - u8 doff = 0; - int ret = -1; - int i; - - brcmf_dbg(TRACE, "Enter\n"); - - if (bus->drvr->dongle_reset) - return -EIO; - - /* Back the pointer to make a room for bus header */ - frame = msg - SDPCM_HDRLEN; - len = (msglen += SDPCM_HDRLEN); - - /* Add alignment padding (optional for ctl frames) */ - if (brcmf_alignctl) { - doff = ((unsigned long)frame % BRCMF_SDALIGN); - if (doff) { - frame -= doff; - len += doff; - msglen += doff; - memset(frame, 0, doff + SDPCM_HDRLEN); - } - /* precondition: doff < BRCMF_SDALIGN */ - } - doff += SDPCM_HDRLEN; - - /* Round send length to next SDIO block */ - if (bus->roundup && bus->blocksize && (len > bus->blocksize)) { - u16 pad = bus->blocksize - (len % bus->blocksize); - if ((pad <= bus->roundup) && (pad < bus->blocksize)) - len += pad; - } else if (len % BRCMF_SDALIGN) { - len += BRCMF_SDALIGN - (len % BRCMF_SDALIGN); - } - - /* Satisfy length-alignment requirements */ - if (forcealign && (len & (ALIGNMENT - 1))) - len = roundup(len, ALIGNMENT); - - /* precondition: IS_ALIGNED((unsigned long)frame, 2) */ - - /* Need to lock here to protect txseq and SDIO tx calls */ - brcmf_sdbrcm_sdlock(bus); - - bus_wake(bus); - - /* Make sure backplane clock is on */ - brcmf_sdbrcm_clkctl(bus, CLK_AVAIL, false); - - /* Hardware tag: 2 byte len followed by 2 byte ~len check (all LE) */ - *(u16 *) frame = cpu_to_le16((u16) msglen); - *(((u16 *) frame) + 1) = cpu_to_le16(~msglen); - - /* Software tag: channel, sequence number, data offset */ - swheader = - ((SDPCM_CONTROL_CHANNEL << SDPCM_CHANNEL_SHIFT) & - SDPCM_CHANNEL_MASK) - | bus->tx_seq | ((doff << SDPCM_DOFFSET_SHIFT) & - SDPCM_DOFFSET_MASK); - put_unaligned_le32(swheader, frame + SDPCM_FRAMETAG_LEN); - put_unaligned_le32(0, frame + SDPCM_FRAMETAG_LEN + sizeof(swheader)); - - if (!data_ok(bus)) { - brcmf_dbg(INFO, "No bus credit bus->tx_max %d, bus->tx_seq %d\n", - bus->tx_max, bus->tx_seq); - bus->ctrl_frame_stat = true; - /* Send from dpc */ - bus->ctrl_frame_buf = frame; - bus->ctrl_frame_len = len; - - brcmf_sdbrcm_wait_for_event(bus, &bus->ctrl_frame_stat); - - if (bus->ctrl_frame_stat == false) { - brcmf_dbg(INFO, "ctrl_frame_stat == false\n"); - ret = 0; - } else { - brcmf_dbg(INFO, "ctrl_frame_stat == true\n"); - ret = -1; - } - } - - if (ret == -1) { -#ifdef BCMDBG - if (BRCMF_BYTES_ON() && BRCMF_CTL_ON()) { - printk(KERN_DEBUG "Tx Frame:\n"); - print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, - frame, len); - } else if (BRCMF_HDRS_ON()) { - printk(KERN_DEBUG "TxHdr:\n"); - print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, - frame, min_t(u16, len, 16)); - } -#endif - - do { - bus->ctrl_frame_stat = false; - ret = brcmf_sdbrcm_send_buf(bus, bus->sdiodev->sbwad, - SDIO_FUNC_2, F2SYNC, frame, len, NULL); - - if (ret < 0) { - /* On failure, abort the command and - terminate the frame */ - brcmf_dbg(INFO, "sdio error %d, abort command and terminate frame\n", - ret); - bus->tx_sderrs++; - - brcmf_sdcard_abort(bus->sdiodev, SDIO_FUNC_2); - - brcmf_sdcard_cfg_write(bus->sdiodev, - SDIO_FUNC_1, - SBSDIO_FUNC1_FRAMECTRL, - SFC_WF_TERM, NULL); - bus->f1regdata++; - - for (i = 0; i < 3; i++) { - u8 hi, lo; - hi = brcmf_sdcard_cfg_read(bus->sdiodev, - SDIO_FUNC_1, - SBSDIO_FUNC1_WFRAMEBCHI, - NULL); - lo = brcmf_sdcard_cfg_read(bus->sdiodev, - SDIO_FUNC_1, - SBSDIO_FUNC1_WFRAMEBCLO, - NULL); - bus->f1regdata += 2; - if ((hi == 0) && (lo == 0)) - break; - } - - } - if (ret == 0) - bus->tx_seq = - (bus->tx_seq + 1) % SDPCM_SEQUENCE_WRAP; - - } while ((ret < 0) && retries++ < TXRETRIES); - } - - if ((bus->idletime == BRCMF_IDLE_IMMEDIATE) && !bus->dpc_sched) { - bus->activity = false; - brcmf_sdbrcm_clkctl(bus, CLK_NONE, true); - } - - brcmf_sdbrcm_sdunlock(bus); - - if (ret) - bus->drvr->tx_ctlerrs++; - else - bus->drvr->tx_ctlpkts++; - - return ret ? -EIO : 0; -} - -int -brcmf_sdbrcm_bus_rxctl(struct brcmf_bus *bus, unsigned char *msg, uint msglen) -{ - int timeleft; - uint rxlen = 0; - bool pending; - - brcmf_dbg(TRACE, "Enter\n"); - - if (bus->drvr->dongle_reset) - return -EIO; - - /* Wait until control frame is available */ - timeleft = brcmf_sdbrcm_ioctl_resp_wait(bus, &bus->rxlen, &pending); - - brcmf_sdbrcm_sdlock(bus); - rxlen = bus->rxlen; - memcpy(msg, bus->rxctl, min(msglen, rxlen)); - bus->rxlen = 0; - brcmf_sdbrcm_sdunlock(bus); - - if (rxlen) { - brcmf_dbg(CTL, "resumed on rxctl frame, got %d expected %d\n", - rxlen, msglen); - } else if (timeleft == 0) { - brcmf_dbg(ERROR, "resumed on timeout\n"); -#ifdef BCMDBG - brcmf_sdbrcm_sdlock(bus); - brcmf_sdbrcm_checkdied(bus, NULL, 0); - brcmf_sdbrcm_sdunlock(bus); -#endif /* BCMDBG */ - } else if (pending == true) { - brcmf_dbg(CTL, "cancelled\n"); - return -ERESTARTSYS; - } else { - brcmf_dbg(CTL, "resumed for unknown reason?\n"); -#ifdef BCMDBG - brcmf_sdbrcm_sdlock(bus); - brcmf_sdbrcm_checkdied(bus, NULL, 0); - brcmf_sdbrcm_sdunlock(bus); -#endif /* BCMDBG */ - } - - if (rxlen) - bus->drvr->rx_ctlpkts++; - else - bus->drvr->rx_ctlerrs++; - - return rxlen ? (int)rxlen : -ETIMEDOUT; -} - -static int -brcmf_sdbrcm_membytes(struct brcmf_bus *bus, bool write, u32 address, u8 *data, - uint size) -{ - int bcmerror = 0; - u32 sdaddr; - uint dsize; - - /* Determine initial transfer parameters */ - sdaddr = address & SBSDIO_SB_OFT_ADDR_MASK; - if ((sdaddr + size) & SBSDIO_SBWINDOW_MASK) - dsize = (SBSDIO_SB_OFT_ADDR_LIMIT - sdaddr); - else - dsize = size; - - /* Set the backplane window to include the start address */ - bcmerror = brcmf_sdcard_set_sbaddr_window(bus->sdiodev, address); - if (bcmerror) { - brcmf_dbg(ERROR, "window change failed\n"); - goto xfer_done; - } - - /* Do the transfer(s) */ - while (size) { - brcmf_dbg(INFO, "%s %d bytes at offset 0x%08x in window 0x%08x\n", - write ? "write" : "read", dsize, - sdaddr, address & SBSDIO_SBWINDOW_MASK); - bcmerror = brcmf_sdcard_rwdata(bus->sdiodev, write, - sdaddr, data, dsize); - if (bcmerror) { - brcmf_dbg(ERROR, "membytes transfer failed\n"); - break; - } - - /* Adjust for next transfer (if any) */ - size -= dsize; - if (size) { - data += dsize; - address += dsize; - bcmerror = brcmf_sdcard_set_sbaddr_window(bus->sdiodev, - address); - if (bcmerror) { - brcmf_dbg(ERROR, "window change failed\n"); - break; - } - sdaddr = 0; - dsize = min_t(uint, SBSDIO_SB_OFT_ADDR_LIMIT, size); - } - } - -xfer_done: - /* Return the window to backplane enumeration space for core access */ - if (brcmf_sdcard_set_sbaddr_window(bus->sdiodev, bus->sdiodev->sbwad)) - brcmf_dbg(ERROR, "FAILED to set window back to 0x%x\n", - bus->sdiodev->sbwad); - - return bcmerror; -} - -#ifdef BCMDBG -static int -brcmf_sdbrcm_readshared(struct brcmf_bus *bus, struct sdpcm_shared *sh) -{ - u32 addr; - int rv; - - /* Read last word in memory to determine address of - sdpcm_shared structure */ - rv = brcmf_sdbrcm_membytes(bus, false, bus->ramsize - 4, (u8 *)&addr, - 4); - if (rv < 0) - return rv; - - addr = le32_to_cpu(addr); - - brcmf_dbg(INFO, "sdpcm_shared address 0x%08X\n", addr); - /* - * Check if addr is valid. - * NVRAM length at the end of memory should have been overwritten. + * DEVREADY does not occur with gSPI. */ - if (addr == 0 || ((~addr >> 16) & 0xffff) == (addr & 0xffff)) { - brcmf_dbg(ERROR, "address (0x%08x) of sdpcm_shared invalid\n", - addr); - return -EBADE; - } - - /* Read rte_shared structure */ - rv = brcmf_sdbrcm_membytes(bus, false, addr, (u8 *) sh, - sizeof(struct sdpcm_shared)); - if (rv < 0) - return rv; - - /* Endianness */ - sh->flags = le32_to_cpu(sh->flags); - sh->trap_addr = le32_to_cpu(sh->trap_addr); - sh->assert_exp_addr = le32_to_cpu(sh->assert_exp_addr); - sh->assert_file_addr = le32_to_cpu(sh->assert_file_addr); - sh->assert_line = le32_to_cpu(sh->assert_line); - sh->console_addr = le32_to_cpu(sh->console_addr); - sh->msgtrace_addr = le32_to_cpu(sh->msgtrace_addr); - - if ((sh->flags & SDPCM_SHARED_VERSION_MASK) != SDPCM_SHARED_VERSION) { - brcmf_dbg(ERROR, "sdpcm_shared version %d in brcmf is different than sdpcm_shared version %d in dongle\n", - SDPCM_SHARED_VERSION, - sh->flags & SDPCM_SHARED_VERSION_MASK); - return -EBADE; - } - - return 0; -} - -static int brcmf_sdbrcm_checkdied(struct brcmf_bus *bus, u8 *data, uint size) -{ - int bcmerror = 0; - uint msize = 512; - char *mbuffer = NULL; - uint maxstrlen = 256; - char *str = NULL; - struct brcmf_trap tr; - struct sdpcm_shared sdpcm_shared; - struct brcmu_strbuf strbuf; - - brcmf_dbg(TRACE, "Enter\n"); - - if (data == NULL) { - /* - * Called after a rx ctrl timeout. "data" is NULL. - * allocate memory to trace the trap or assert. - */ - size = msize; - mbuffer = data = kmalloc(msize, GFP_ATOMIC); - if (mbuffer == NULL) { - brcmf_dbg(ERROR, "kmalloc(%d) failed\n", msize); - bcmerror = -ENOMEM; - goto done; - } - } - - str = kmalloc(maxstrlen, GFP_ATOMIC); - if (str == NULL) { - brcmf_dbg(ERROR, "kmalloc(%d) failed\n", maxstrlen); - bcmerror = -ENOMEM; - goto done; - } - - bcmerror = brcmf_sdbrcm_readshared(bus, &sdpcm_shared); - if (bcmerror < 0) - goto done; - - brcmu_binit(&strbuf, data, size); - - brcmu_bprintf(&strbuf, - "msgtrace address : 0x%08X\nconsole address : 0x%08X\n", - sdpcm_shared.msgtrace_addr, sdpcm_shared.console_addr); - - if ((sdpcm_shared.flags & SDPCM_SHARED_ASSERT_BUILT) == 0) - /* NOTE: Misspelled assert is intentional - DO NOT FIX. - * (Avoids conflict with real asserts for programmatic - * parsing of output.) - */ - brcmu_bprintf(&strbuf, "Assrt not built in dongle\n"); - - if ((sdpcm_shared.flags & (SDPCM_SHARED_ASSERT | SDPCM_SHARED_TRAP)) == - 0) { - /* NOTE: Misspelled assert is intentional - DO NOT FIX. - * (Avoids conflict with real asserts for programmatic - * parsing of output.) - */ - brcmu_bprintf(&strbuf, "No trap%s in dongle", - (sdpcm_shared.flags & SDPCM_SHARED_ASSERT_BUILT) - ? "/assrt" : ""); - } else { - if (sdpcm_shared.flags & SDPCM_SHARED_ASSERT) { - /* Download assert */ - brcmu_bprintf(&strbuf, "Dongle assert"); - if (sdpcm_shared.assert_exp_addr != 0) { - str[0] = '\0'; - bcmerror = brcmf_sdbrcm_membytes(bus, false, - sdpcm_shared.assert_exp_addr, - (u8 *) str, maxstrlen); - if (bcmerror < 0) - goto done; - - str[maxstrlen - 1] = '\0'; - brcmu_bprintf(&strbuf, " expr \"%s\"", str); - } - - if (sdpcm_shared.assert_file_addr != 0) { - str[0] = '\0'; - bcmerror = brcmf_sdbrcm_membytes(bus, false, - sdpcm_shared.assert_file_addr, - (u8 *) str, maxstrlen); - if (bcmerror < 0) - goto done; - - str[maxstrlen - 1] = '\0'; - brcmu_bprintf(&strbuf, " file \"%s\"", str); - } - - brcmu_bprintf(&strbuf, " line %d ", - sdpcm_shared.assert_line); - } - - if (sdpcm_shared.flags & SDPCM_SHARED_TRAP) { - bcmerror = brcmf_sdbrcm_membytes(bus, false, - sdpcm_shared.trap_addr, (u8 *)&tr, - sizeof(struct brcmf_trap)); - if (bcmerror < 0) - goto done; - - brcmu_bprintf(&strbuf, - "Dongle trap type 0x%x @ epc 0x%x, cpsr 0x%x, spsr 0x%x, sp 0x%x," - "lp 0x%x, rpc 0x%x Trap offset 0x%x, " - "r0 0x%x, r1 0x%x, r2 0x%x, r3 0x%x, r4 0x%x, r5 0x%x, r6 0x%x, r7 0x%x\n", - tr.type, tr.epc, tr.cpsr, tr.spsr, tr.r13, - tr.r14, tr.pc, sdpcm_shared.trap_addr, - tr.r0, tr.r1, tr.r2, tr.r3, tr.r4, tr.r5, - tr.r6, tr.r7); - } - } - - if (sdpcm_shared.flags & (SDPCM_SHARED_ASSERT | SDPCM_SHARED_TRAP)) - brcmf_dbg(ERROR, "%s\n", strbuf.origbuf); - -#ifdef BCMDBG - if (sdpcm_shared.flags & SDPCM_SHARED_TRAP) - /* Mem dump to a file on device */ - brcmf_sdbrcm_mem_dump(bus); - -#endif /* BCMDBG */ - -done: - kfree(mbuffer); - kfree(str); - - return bcmerror; -} - -static int brcmf_sdbrcm_mem_dump(struct brcmf_bus *bus) -{ - int ret = 0; - int size; /* Full mem size */ - int start = 0; /* Start address */ - int read_size = 0; /* Read size of each iteration */ - u8 *buf = NULL, *databuf = NULL; - - /* Get full mem size */ - size = bus->ramsize; - buf = kmalloc(size, GFP_ATOMIC); - if (!buf) { - brcmf_dbg(ERROR, "Out of memory (%d bytes)\n", size); - return -1; - } - - /* Read mem content */ - printk(KERN_DEBUG "Dump dongle memory"); - databuf = buf; - while (size) { - read_size = min(MEMBLOCK, size); - ret = brcmf_sdbrcm_membytes(bus, false, start, databuf, - read_size); - if (ret) { - brcmf_dbg(ERROR, "Error membytes %d\n", ret); - kfree(buf); - return -1; - } - printk("."); - - /* Decrement size and increment start address */ - size -= read_size; - start += read_size; - databuf += read_size; - } - printk(KERN_DEBUG "Done\n"); - - /* free buf before return !!! */ - if (brcmf_write_to_file(bus->drvr, buf, bus->ramsize)) { - brcmf_dbg(ERROR, "Error writing to files\n"); - return -1; - } - - /* buf free handled in brcmf_write_to_file, not here */ - return 0; -} - -#define CONSOLE_LINE_MAX 192 - -static int brcmf_sdbrcm_readconsole(struct brcmf_bus *bus) -{ - struct brcmf_console *c = &bus->console; - u8 line[CONSOLE_LINE_MAX], ch; - u32 n, idx, addr; - int rv; - - /* Don't do anything until FWREADY updates console address */ - if (bus->console_addr == 0) - return 0; - - /* Read console log struct */ - addr = bus->console_addr + offsetof(struct rte_console, log); - rv = brcmf_sdbrcm_membytes(bus, false, addr, (u8 *)&c->log, - sizeof(c->log)); - if (rv < 0) - return rv; - - /* Allocate console buffer (one time only) */ - if (c->buf == NULL) { - c->bufsize = le32_to_cpu(c->log.buf_size); - c->buf = kmalloc(c->bufsize, GFP_ATOMIC); - if (c->buf == NULL) - return -ENOMEM; - } - - idx = le32_to_cpu(c->log.idx); - - /* Protect against corrupt value */ - if (idx > c->bufsize) - return -EBADE; - - /* Skip reading the console buffer if the index pointer - has not moved */ - if (idx == c->last) - return 0; - - /* Read the console buffer */ - addr = le32_to_cpu(c->log.buf); - rv = brcmf_sdbrcm_membytes(bus, false, addr, c->buf, c->bufsize); - if (rv < 0) - return rv; - - while (c->last != idx) { - for (n = 0; n < CONSOLE_LINE_MAX - 2; n++) { - if (c->last == idx) { - /* This would output a partial line. - * Instead, back up - * the buffer pointer and output this - * line next time around. - */ - if (c->last >= n) - c->last -= n; - else - c->last = c->bufsize - n; - goto break2; - } - ch = c->buf[c->last]; - c->last = (c->last + 1) % c->bufsize; - if (ch == '\n') - break; - line[n] = ch; - } - - if (n > 0) { - if (line[n - 1] == '\r') - n--; - line[n] = 0; - printk(KERN_DEBUG "CONSOLE: %s\n", line); - } - } -break2: - - return 0; -} -#endif /* BCMDBG */ - -static int brcmf_sdbrcm_downloadvars(struct brcmf_bus *bus, void *arg, int len) -{ - int bcmerror = 0; - - brcmf_dbg(TRACE, "Enter\n"); - - /* Basic sanity checks */ - if (bus->drvr->up) { - bcmerror = -EISCONN; - goto err; - } - if (!len) { - bcmerror = -EOVERFLOW; - goto err; - } - - /* Free the old ones and replace with passed variables */ - kfree(bus->vars); - - bus->vars = kmalloc(len, GFP_ATOMIC); - bus->varsz = bus->vars ? len : 0; - if (bus->vars == NULL) { - bcmerror = -ENOMEM; - goto err; - } - - /* Copy the passed variables, which should include the - terminating double-null */ - memcpy(bus->vars, arg, bus->varsz); -err: - return bcmerror; -} - -static int brcmf_sdbrcm_write_vars(struct brcmf_bus *bus) -{ - int bcmerror = 0; - u32 varsize; - u32 varaddr; - u8 *vbuffer; - u32 varsizew; -#ifdef BCMDBG - char *nvram_ularray; -#endif /* BCMDBG */ - - /* Even if there are no vars are to be written, we still - need to set the ramsize. */ - varsize = bus->varsz ? roundup(bus->varsz, 4) : 0; - varaddr = (bus->ramsize - 4) - varsize; - - if (bus->vars) { - vbuffer = kzalloc(varsize, GFP_ATOMIC); - if (!vbuffer) - return -ENOMEM; - - memcpy(vbuffer, bus->vars, bus->varsz); - - /* Write the vars list */ - bcmerror = - brcmf_sdbrcm_membytes(bus, true, varaddr, vbuffer, varsize); -#ifdef BCMDBG - /* Verify NVRAM bytes */ - brcmf_dbg(INFO, "Compare NVRAM dl & ul; varsize=%d\n", varsize); - nvram_ularray = kmalloc(varsize, GFP_ATOMIC); - if (!nvram_ularray) - return -ENOMEM; - - /* Upload image to verify downloaded contents. */ - memset(nvram_ularray, 0xaa, varsize); - - /* Read the vars list to temp buffer for comparison */ - bcmerror = - brcmf_sdbrcm_membytes(bus, false, varaddr, nvram_ularray, - varsize); - if (bcmerror) { - brcmf_dbg(ERROR, "error %d on reading %d nvram bytes at 0x%08x\n", - bcmerror, varsize, varaddr); - } - /* Compare the org NVRAM with the one read from RAM */ - if (memcmp(vbuffer, nvram_ularray, varsize)) - brcmf_dbg(ERROR, "Downloaded NVRAM image is corrupted\n"); + if (hmb_data & (HMB_DATA_DEVREADY | HMB_DATA_FWREADY)) { + bus->sdpcm_ver = + (hmb_data & HMB_DATA_VERSION_MASK) >> + HMB_DATA_VERSION_SHIFT; + if (bus->sdpcm_ver != SDPCM_PROT_VERSION) + brcmf_dbg(ERROR, "Version mismatch, dongle reports %d, " + "expecting %d\n", + bus->sdpcm_ver, SDPCM_PROT_VERSION); else - brcmf_dbg(ERROR, "Download/Upload/Compare of NVRAM ok\n"); - - kfree(nvram_ularray); -#endif /* BCMDBG */ - - kfree(vbuffer); + brcmf_dbg(INFO, "Dongle ready, protocol version %d\n", + bus->sdpcm_ver); } - /* adjust to the user specified RAM */ - brcmf_dbg(INFO, "Physical memory size: %d, usable memory size: %d\n", - bus->orig_ramsize, bus->ramsize); - brcmf_dbg(INFO, "Vars are at %d, orig varsize is %d\n", - varaddr, varsize); - varsize = ((bus->orig_ramsize - 4) - varaddr); - /* - * Determine the length token: - * Varsize, converted to words, in lower 16-bits, checksum - * in upper 16-bits. + * Flow Control has been moved into the RX headers and this out of band + * method isn't used any more. + * remaining backward compatible with older dongles. */ - if (bcmerror) { - varsizew = 0; - } else { - varsizew = varsize / 4; - varsizew = (~varsizew << 16) | (varsizew & 0x0000FFFF); - varsizew = cpu_to_le32(varsizew); + if (hmb_data & HMB_DATA_FC) { + fcbits = (hmb_data & HMB_DATA_FCDATA_MASK) >> + HMB_DATA_FCDATA_SHIFT; + + if (fcbits & ~bus->flowcontrol) + bus->fc_xoff++; + + if (bus->flowcontrol & ~fcbits) + bus->fc_xon++; + + bus->fc_rcvd++; + bus->flowcontrol = fcbits; } - brcmf_dbg(INFO, "New varsize is %d, length token=0x%08x\n", - varsize, varsizew); + /* Shouldn't be any others */ + if (hmb_data & ~(HMB_DATA_DEVREADY | + HMB_DATA_NAKHANDLED | + HMB_DATA_FC | + HMB_DATA_FWREADY | + HMB_DATA_FCDATA_MASK | HMB_DATA_VERSION_MASK)) + brcmf_dbg(ERROR, "Unknown mailbox data content: 0x%02x\n", + hmb_data); - /* Write the length token to the last word */ - bcmerror = brcmf_sdbrcm_membytes(bus, true, (bus->orig_ramsize - 4), - (u8 *)&varsizew, 4); - - return bcmerror; -} - -static int brcmf_sdbrcm_download_state(struct brcmf_bus *bus, bool enter) -{ - uint retries; - u32 regdata; - int bcmerror = 0; - - /* To enter download state, disable ARM and reset SOCRAM. - * To exit download state, simply reset ARM (default is RAM boot). - */ - if (enter) { - bus->alp_only = true; - - brcmf_sdbrcm_chip_disablecore(bus->sdiodev, - bus->ci->armcorebase); - - brcmf_sdbrcm_chip_resetcore(bus->sdiodev, bus->ci->ramcorebase); - - /* Clear the top bit of memory */ - if (bus->ramsize) { - u32 zeros = 0; - brcmf_sdbrcm_membytes(bus, true, bus->ramsize - 4, - (u8 *)&zeros, 4); - } - } else { - regdata = brcmf_sdcard_reg_read(bus->sdiodev, - CORE_SB(bus->ci->ramcorebase, sbtmstatelow), 4); - regdata &= (SBTML_RESET | SBTML_REJ_MASK | - (SICF_CLOCK_EN << SBTML_SICF_SHIFT)); - if ((SICF_CLOCK_EN << SBTML_SICF_SHIFT) != regdata) { - brcmf_dbg(ERROR, "SOCRAM core is down after reset?\n"); - bcmerror = -EBADE; - goto fail; - } - - bcmerror = brcmf_sdbrcm_write_vars(bus); - if (bcmerror) { - brcmf_dbg(ERROR, "no vars written to RAM\n"); - bcmerror = 0; - } - - w_sdreg32(bus, 0xFFFFFFFF, - offsetof(struct sdpcmd_regs, intstatus), &retries); - - brcmf_sdbrcm_chip_resetcore(bus->sdiodev, bus->ci->armcorebase); - - /* Allow HT Clock now that the ARM is running. */ - bus->alp_only = false; - - bus->drvr->busstate = BRCMF_BUS_LOAD; - } -fail: - return bcmerror; -} - -void brcmf_sdbrcm_bus_stop(struct brcmf_bus *bus, bool enforce_mutex) -{ - u32 local_hostintmask; - u8 saveclk; - uint retries; - int err; - - brcmf_dbg(TRACE, "Enter\n"); - - if (enforce_mutex) - brcmf_sdbrcm_sdlock(bus); - - bus_wake(bus); - - /* Enable clock for device interrupts */ - brcmf_sdbrcm_clkctl(bus, CLK_AVAIL, false); - - if (bus->watchdog_tsk) { - send_sig(SIGTERM, bus->watchdog_tsk, 1); - kthread_stop(bus->watchdog_tsk); - bus->watchdog_tsk = NULL; - } - - if (bus->dpc_tsk) { - send_sig(SIGTERM, bus->dpc_tsk, 1); - kthread_stop(bus->dpc_tsk); - bus->dpc_tsk = NULL; - } else - tasklet_kill(&bus->tasklet); - - /* Disable and clear interrupts at the chip level also */ - w_sdreg32(bus, 0, offsetof(struct sdpcmd_regs, hostintmask), &retries); - local_hostintmask = bus->hostintmask; - bus->hostintmask = 0; - - /* Change our idea of bus state */ - bus->drvr->busstate = BRCMF_BUS_DOWN; - - /* Force clocks on backplane to be sure F2 interrupt propagates */ - saveclk = brcmf_sdcard_cfg_read(bus->sdiodev, SDIO_FUNC_1, - SBSDIO_FUNC1_CHIPCLKCSR, &err); - if (!err) { - brcmf_sdcard_cfg_write(bus->sdiodev, SDIO_FUNC_1, - SBSDIO_FUNC1_CHIPCLKCSR, - (saveclk | SBSDIO_FORCE_HT), &err); - } - if (err) - brcmf_dbg(ERROR, "Failed to force clock for F2: err %d\n", err); - - /* Turn off the bus (F2), free any pending packets */ - brcmf_dbg(INTR, "disable SDIO interrupts\n"); - brcmf_sdcard_cfg_write(bus->sdiodev, SDIO_FUNC_0, SDIO_CCCR_IOEx, - SDIO_FUNC_ENABLE_1, NULL); - - /* Clear any pending interrupts now that F2 is disabled */ - w_sdreg32(bus, local_hostintmask, - offsetof(struct sdpcmd_regs, intstatus), &retries); - - /* Turn off the backplane clock (only) */ - brcmf_sdbrcm_clkctl(bus, CLK_SDONLY, false); - - /* Clear the data packet queues */ - brcmu_pktq_flush(&bus->txq, true, NULL, NULL); - - /* Clear any held glomming stuff */ - if (bus->glomd) - brcmu_pkt_buf_free_skb(bus->glomd); - - if (bus->glom) - brcmu_pkt_buf_free_skb(bus->glom); - - bus->glom = bus->glomd = NULL; - - /* Clear rx control and wake any waiters */ - bus->rxlen = 0; - brcmf_sdbrcm_ioctl_resp_wake(bus); - - /* Reset some F2 state stuff */ - bus->rxskip = false; - bus->tx_seq = bus->rx_seq = 0; - - if (enforce_mutex) - brcmf_sdbrcm_sdunlock(bus); -} - -int brcmf_sdbrcm_bus_init(struct brcmf_pub *drvr, bool enforce_mutex) -{ - struct brcmf_bus *bus = drvr->bus; - unsigned long timeout; - uint retries = 0; - u8 ready, enable; - int err, ret = 0; - u8 saveclk; - - brcmf_dbg(TRACE, "Enter\n"); - - /* try to download image and nvram to the dongle */ - if (drvr->busstate == BRCMF_BUS_DOWN) { - if (!(brcmf_sdbrcm_download_firmware(bus))) - return -1; - } - - if (!bus->drvr) - return 0; - - /* Start the watchdog timer */ - bus->drvr->tickcnt = 0; - brcmf_sdbrcm_wd_timer(bus, brcmf_watchdog_ms); - - if (enforce_mutex) - brcmf_sdbrcm_sdlock(bus); - - /* Make sure backplane clock is on, needed to generate F2 interrupt */ - brcmf_sdbrcm_clkctl(bus, CLK_AVAIL, false); - if (bus->clkstate != CLK_AVAIL) - goto exit; - - /* Force clocks on backplane to be sure F2 interrupt propagates */ - saveclk = - brcmf_sdcard_cfg_read(bus->sdiodev, SDIO_FUNC_1, - SBSDIO_FUNC1_CHIPCLKCSR, &err); - if (!err) { - brcmf_sdcard_cfg_write(bus->sdiodev, SDIO_FUNC_1, - SBSDIO_FUNC1_CHIPCLKCSR, - (saveclk | SBSDIO_FORCE_HT), &err); - } - if (err) { - brcmf_dbg(ERROR, "Failed to force clock for F2: err %d\n", err); - goto exit; - } - - /* Enable function 2 (frame transfers) */ - w_sdreg32(bus, SDPCM_PROT_VERSION << SMB_DATA_VERSION_SHIFT, - offsetof(struct sdpcmd_regs, tosbmailboxdata), &retries); - enable = (SDIO_FUNC_ENABLE_1 | SDIO_FUNC_ENABLE_2); - - brcmf_sdcard_cfg_write(bus->sdiodev, SDIO_FUNC_0, SDIO_CCCR_IOEx, - enable, NULL); - - timeout = jiffies + msecs_to_jiffies(BRCMF_WAIT_F2RDY); - ready = 0; - while (enable != ready) { - ready = brcmf_sdcard_cfg_read(bus->sdiodev, SDIO_FUNC_0, - SDIO_CCCR_IORx, NULL); - if (time_after(jiffies, timeout)) - break; - else if (time_after(jiffies, timeout - BRCMF_WAIT_F2RDY + 50)) - /* prevent busy waiting if it takes too long */ - msleep_interruptible(20); - } - - brcmf_dbg(INFO, "enable 0x%02x, ready 0x%02x\n", enable, ready); - - /* If F2 successfully enabled, set core and enable interrupts */ - if (ready == enable) { - /* Set up the interrupt mask and enable interrupts */ - bus->hostintmask = HOSTINTMASK; - w_sdreg32(bus, bus->hostintmask, - offsetof(struct sdpcmd_regs, hostintmask), &retries); - - brcmf_sdcard_cfg_write(bus->sdiodev, SDIO_FUNC_1, - SBSDIO_WATERMARK, 8, &err); - - /* Set bus state according to enable result */ - drvr->busstate = BRCMF_BUS_DATA; - } - - else { - /* Disable F2 again */ - enable = SDIO_FUNC_ENABLE_1; - brcmf_sdcard_cfg_write(bus->sdiodev, SDIO_FUNC_0, - SDIO_CCCR_IOEx, enable, NULL); - } - - /* Restore previous clock setting */ - brcmf_sdcard_cfg_write(bus->sdiodev, SDIO_FUNC_1, - SBSDIO_FUNC1_CHIPCLKCSR, saveclk, &err); - - /* If we didn't come up, turn off backplane clock */ - if (drvr->busstate != BRCMF_BUS_DATA) - brcmf_sdbrcm_clkctl(bus, CLK_NONE, false); - -exit: - if (enforce_mutex) - brcmf_sdbrcm_sdunlock(bus); - - return ret; + return intstatus; } static void brcmf_sdbrcm_rxfail(struct brcmf_bus *bus, bool abort, bool rtx) @@ -2498,98 +1317,6 @@ static void brcmf_sdbrcm_rxfail(struct brcmf_bus *bus, bool abort, bool rtx) bus->drvr->busstate = BRCMF_BUS_DOWN; } -static void -brcmf_sdbrcm_read_control(struct brcmf_bus *bus, u8 *hdr, uint len, uint doff) -{ - uint rdlen, pad; - - int sdret; - - brcmf_dbg(TRACE, "Enter\n"); - - /* Set rxctl for frame (w/optional alignment) */ - bus->rxctl = bus->rxbuf; - if (brcmf_alignctl) { - bus->rxctl += firstread; - pad = ((unsigned long)bus->rxctl % BRCMF_SDALIGN); - if (pad) - bus->rxctl += (BRCMF_SDALIGN - pad); - bus->rxctl -= firstread; - } - - /* Copy the already-read portion over */ - memcpy(bus->rxctl, hdr, firstread); - if (len <= firstread) - goto gotpkt; - - /* Raise rdlen to next SDIO block to avoid tail command */ - rdlen = len - firstread; - if (bus->roundup && bus->blocksize && (rdlen > bus->blocksize)) { - pad = bus->blocksize - (rdlen % bus->blocksize); - if ((pad <= bus->roundup) && (pad < bus->blocksize) && - ((len + pad) < bus->drvr->maxctl)) - rdlen += pad; - } else if (rdlen % BRCMF_SDALIGN) { - rdlen += BRCMF_SDALIGN - (rdlen % BRCMF_SDALIGN); - } - - /* Satisfy length-alignment requirements */ - if (forcealign && (rdlen & (ALIGNMENT - 1))) - rdlen = roundup(rdlen, ALIGNMENT); - - /* Drop if the read is too big or it exceeds our maximum */ - if ((rdlen + firstread) > bus->drvr->maxctl) { - brcmf_dbg(ERROR, "%d-byte control read exceeds %d-byte buffer\n", - rdlen, bus->drvr->maxctl); - bus->drvr->rx_errors++; - brcmf_sdbrcm_rxfail(bus, false, false); - goto done; - } - - if ((len - doff) > bus->drvr->maxctl) { - brcmf_dbg(ERROR, "%d-byte ctl frame (%d-byte ctl data) exceeds %d-byte limit\n", - len, len - doff, bus->drvr->maxctl); - bus->drvr->rx_errors++; - bus->rx_toolong++; - brcmf_sdbrcm_rxfail(bus, false, false); - goto done; - } - - /* Read remainder of frame body into the rxctl buffer */ - sdret = brcmf_sdcard_recv_buf(bus->sdiodev, - bus->sdiodev->sbwad, - SDIO_FUNC_2, - F2SYNC, (bus->rxctl + firstread), rdlen, - NULL); - bus->f2rxdata++; - - /* Control frame failures need retransmission */ - if (sdret < 0) { - brcmf_dbg(ERROR, "read %d control bytes failed: %d\n", - rdlen, sdret); - bus->rxc_errors++; - brcmf_sdbrcm_rxfail(bus, true, true); - goto done; - } - -gotpkt: - -#ifdef BCMDBG - if (BRCMF_BYTES_ON() && BRCMF_CTL_ON()) { - printk(KERN_DEBUG "RxCtrl:\n"); - print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, bus->rxctl, len); - } -#endif - - /* Point to valid data and indicate its length */ - bus->rxctl += doff; - bus->rxlen = len - doff; - -done: - /* Awake any waiters */ - brcmf_sdbrcm_ioctl_resp_wake(bus); -} - static u8 brcmf_sdbrcm_rxglom(struct brcmf_bus *bus, u8 rxseq) { u16 dlen, totlen; @@ -2970,6 +1697,127 @@ static u8 brcmf_sdbrcm_rxglom(struct brcmf_bus *bus, u8 rxseq) return num; } +static int brcmf_sdbrcm_ioctl_resp_wait(struct brcmf_bus *bus, uint *condition, + bool *pending) +{ + DECLARE_WAITQUEUE(wait, current); + int timeout = msecs_to_jiffies(brcmf_ioctl_timeout_msec); + + /* Wait until control frame is available */ + add_wait_queue(&bus->ioctl_resp_wait, &wait); + set_current_state(TASK_INTERRUPTIBLE); + + while (!(*condition) && (!signal_pending(current) && timeout)) + timeout = schedule_timeout(timeout); + + if (signal_pending(current)) + *pending = true; + + set_current_state(TASK_RUNNING); + remove_wait_queue(&bus->ioctl_resp_wait, &wait); + + return timeout; +} + +static int brcmf_sdbrcm_ioctl_resp_wake(struct brcmf_bus *bus) +{ + if (waitqueue_active(&bus->ioctl_resp_wait)) + wake_up_interruptible(&bus->ioctl_resp_wait); + + return 0; +} +static void +brcmf_sdbrcm_read_control(struct brcmf_bus *bus, u8 *hdr, uint len, uint doff) +{ + uint rdlen, pad; + + int sdret; + + brcmf_dbg(TRACE, "Enter\n"); + + /* Set rxctl for frame (w/optional alignment) */ + bus->rxctl = bus->rxbuf; + if (brcmf_alignctl) { + bus->rxctl += firstread; + pad = ((unsigned long)bus->rxctl % BRCMF_SDALIGN); + if (pad) + bus->rxctl += (BRCMF_SDALIGN - pad); + bus->rxctl -= firstread; + } + + /* Copy the already-read portion over */ + memcpy(bus->rxctl, hdr, firstread); + if (len <= firstread) + goto gotpkt; + + /* Raise rdlen to next SDIO block to avoid tail command */ + rdlen = len - firstread; + if (bus->roundup && bus->blocksize && (rdlen > bus->blocksize)) { + pad = bus->blocksize - (rdlen % bus->blocksize); + if ((pad <= bus->roundup) && (pad < bus->blocksize) && + ((len + pad) < bus->drvr->maxctl)) + rdlen += pad; + } else if (rdlen % BRCMF_SDALIGN) { + rdlen += BRCMF_SDALIGN - (rdlen % BRCMF_SDALIGN); + } + + /* Satisfy length-alignment requirements */ + if (forcealign && (rdlen & (ALIGNMENT - 1))) + rdlen = roundup(rdlen, ALIGNMENT); + + /* Drop if the read is too big or it exceeds our maximum */ + if ((rdlen + firstread) > bus->drvr->maxctl) { + brcmf_dbg(ERROR, "%d-byte control read exceeds %d-byte buffer\n", + rdlen, bus->drvr->maxctl); + bus->drvr->rx_errors++; + brcmf_sdbrcm_rxfail(bus, false, false); + goto done; + } + + if ((len - doff) > bus->drvr->maxctl) { + brcmf_dbg(ERROR, "%d-byte ctl frame (%d-byte ctl data) exceeds %d-byte limit\n", + len, len - doff, bus->drvr->maxctl); + bus->drvr->rx_errors++; + bus->rx_toolong++; + brcmf_sdbrcm_rxfail(bus, false, false); + goto done; + } + + /* Read remainder of frame body into the rxctl buffer */ + sdret = brcmf_sdcard_recv_buf(bus->sdiodev, + bus->sdiodev->sbwad, + SDIO_FUNC_2, + F2SYNC, (bus->rxctl + firstread), rdlen, + NULL); + bus->f2rxdata++; + + /* Control frame failures need retransmission */ + if (sdret < 0) { + brcmf_dbg(ERROR, "read %d control bytes failed: %d\n", + rdlen, sdret); + bus->rxc_errors++; + brcmf_sdbrcm_rxfail(bus, true, true); + goto done; + } + +gotpkt: + +#ifdef BCMDBG + if (BRCMF_BYTES_ON() && BRCMF_CTL_ON()) { + printk(KERN_DEBUG "RxCtrl:\n"); + print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, bus->rxctl, len); + } +#endif + + /* Point to valid data and indicate its length */ + bus->rxctl += doff; + bus->rxlen = len - doff; + +done: + /* Awake any waiters */ + brcmf_sdbrcm_ioctl_resp_wake(bus); +} + /* Return true if there may be more frames to read */ static uint brcmf_sdbrcm_readframes(struct brcmf_bus *bus, uint maxframes, bool *finished) @@ -3449,80 +2297,235 @@ deliver: return rxcount; } -static u32 brcmf_sdbrcm_hostmail(struct brcmf_bus *bus) +static int +brcmf_sdbrcm_send_buf(struct brcmf_bus *bus, u32 addr, uint fn, uint flags, + u8 *buf, uint nbytes, struct sk_buff *pkt) { - u32 intstatus = 0; - u32 hmb_data; - u8 fcbits; + return brcmf_sdcard_send_buf + (bus->sdiodev, addr, fn, flags, buf, nbytes, pkt); +} + +static void +brcmf_sdbrcm_wait_for_event(struct brcmf_bus *bus, bool *lockvar) +{ + brcmf_sdbrcm_sdunlock(bus); + wait_event_interruptible_timeout(bus->ctrl_wait, + (*lockvar == false), HZ * 2); + brcmf_sdbrcm_sdlock(bus); + return; +} + +static void +brcmf_sdbrcm_wait_event_wakeup(struct brcmf_bus *bus) +{ + if (waitqueue_active(&bus->ctrl_wait)) + wake_up_interruptible(&bus->ctrl_wait); + return; +} + +/* Writes a HW/SW header into the packet and sends it. */ +/* Assumes: (a) header space already there, (b) caller holds lock */ +static int brcmf_sdbrcm_txpkt(struct brcmf_bus *bus, struct sk_buff *pkt, + uint chan, bool free_pkt) +{ + int ret; + u8 *frame; + u16 len, pad = 0; + u32 swheader; uint retries = 0; + struct sk_buff *new; + int i; brcmf_dbg(TRACE, "Enter\n"); - /* Read mailbox data and ack that we did so */ - r_sdreg32(bus, &hmb_data, - offsetof(struct sdpcmd_regs, tohostmailboxdata), &retries); - - if (retries <= retry_limit) - w_sdreg32(bus, SMB_INT_ACK, - offsetof(struct sdpcmd_regs, tosbmailbox), &retries); - bus->f1regdata += 2; - - /* Dongle recomposed rx frames, accept them again */ - if (hmb_data & HMB_DATA_NAKHANDLED) { - brcmf_dbg(INFO, "Dongle reports NAK handled, expect rtx of %d\n", - bus->rx_seq); - if (!bus->rxskip) - brcmf_dbg(ERROR, "unexpected NAKHANDLED!\n"); - - bus->rxskip = false; - intstatus |= I_HMB_FRAME_IND; + if (bus->drvr->dongle_reset) { + ret = -EPERM; + goto done; } - /* - * DEVREADY does not occur with gSPI. - */ - if (hmb_data & (HMB_DATA_DEVREADY | HMB_DATA_FWREADY)) { - bus->sdpcm_ver = - (hmb_data & HMB_DATA_VERSION_MASK) >> - HMB_DATA_VERSION_SHIFT; - if (bus->sdpcm_ver != SDPCM_PROT_VERSION) - brcmf_dbg(ERROR, "Version mismatch, dongle reports %d, " - "expecting %d\n", - bus->sdpcm_ver, SDPCM_PROT_VERSION); + frame = (u8 *) (pkt->data); + + /* Add alignment padding, allocate new packet if needed */ + pad = ((unsigned long)frame % BRCMF_SDALIGN); + if (pad) { + if (skb_headroom(pkt) < pad) { + brcmf_dbg(INFO, "insufficient headroom %d for %d pad\n", + skb_headroom(pkt), pad); + bus->drvr->tx_realloc++; + new = brcmu_pkt_buf_get_skb(pkt->len + BRCMF_SDALIGN); + if (!new) { + brcmf_dbg(ERROR, "couldn't allocate new %d-byte packet\n", + pkt->len + BRCMF_SDALIGN); + ret = -ENOMEM; + goto done; + } + + pkt_align(new, pkt->len, BRCMF_SDALIGN); + memcpy(new->data, pkt->data, pkt->len); + if (free_pkt) + brcmu_pkt_buf_free_skb(pkt); + /* free the pkt if canned one is not used */ + free_pkt = true; + pkt = new; + frame = (u8 *) (pkt->data); + /* precondition: (frame % BRCMF_SDALIGN) == 0) */ + pad = 0; + } else { + skb_push(pkt, pad); + frame = (u8 *) (pkt->data); + /* precondition: pad + SDPCM_HDRLEN <= pkt->len */ + memset(frame, 0, pad + SDPCM_HDRLEN); + } + } + /* precondition: pad < BRCMF_SDALIGN */ + + /* Hardware tag: 2 byte len followed by 2 byte ~len check (all LE) */ + len = (u16) (pkt->len); + *(u16 *) frame = cpu_to_le16(len); + *(((u16 *) frame) + 1) = cpu_to_le16(~len); + + /* Software tag: channel, sequence number, data offset */ + swheader = + ((chan << SDPCM_CHANNEL_SHIFT) & SDPCM_CHANNEL_MASK) | bus->tx_seq | + (((pad + + SDPCM_HDRLEN) << SDPCM_DOFFSET_SHIFT) & SDPCM_DOFFSET_MASK); + + put_unaligned_le32(swheader, frame + SDPCM_FRAMETAG_LEN); + put_unaligned_le32(0, frame + SDPCM_FRAMETAG_LEN + sizeof(swheader)); + +#ifdef BCMDBG + tx_packets[pkt->priority]++; + if (BRCMF_BYTES_ON() && + (((BRCMF_CTL_ON() && (chan == SDPCM_CONTROL_CHANNEL)) || + (BRCMF_DATA_ON() && (chan != SDPCM_CONTROL_CHANNEL))))) { + printk(KERN_DEBUG "Tx Frame:\n"); + print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, frame, len); + } else if (BRCMF_HDRS_ON()) { + printk(KERN_DEBUG "TxHdr:\n"); + print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, + frame, min_t(u16, len, 16)); + } +#endif + + /* Raise len to next SDIO block to eliminate tail command */ + if (bus->roundup && bus->blocksize && (len > bus->blocksize)) { + u16 pad = bus->blocksize - (len % bus->blocksize); + if ((pad <= bus->roundup) && (pad < bus->blocksize)) + len += pad; + } else if (len % BRCMF_SDALIGN) { + len += BRCMF_SDALIGN - (len % BRCMF_SDALIGN); + } + + /* Some controllers have trouble with odd bytes -- round to even */ + if (forcealign && (len & (ALIGNMENT - 1))) + len = roundup(len, ALIGNMENT); + + do { + ret = brcmf_sdbrcm_send_buf(bus, bus->sdiodev->sbwad, + SDIO_FUNC_2, F2SYNC, frame, + len, pkt); + bus->f2txdata++; + + if (ret < 0) { + /* On failure, abort the command + and terminate the frame */ + brcmf_dbg(INFO, "sdio error %d, abort command and terminate frame\n", + ret); + bus->tx_sderrs++; + + brcmf_sdcard_abort(bus->sdiodev, SDIO_FUNC_2); + brcmf_sdcard_cfg_write(bus->sdiodev, SDIO_FUNC_1, + SBSDIO_FUNC1_FRAMECTRL, SFC_WF_TERM, + NULL); + bus->f1regdata++; + + for (i = 0; i < 3; i++) { + u8 hi, lo; + hi = brcmf_sdcard_cfg_read(bus->sdiodev, + SDIO_FUNC_1, + SBSDIO_FUNC1_WFRAMEBCHI, + NULL); + lo = brcmf_sdcard_cfg_read(bus->sdiodev, + SDIO_FUNC_1, + SBSDIO_FUNC1_WFRAMEBCLO, + NULL); + bus->f1regdata += 2; + if ((hi == 0) && (lo == 0)) + break; + } + + } + if (ret == 0) + bus->tx_seq = (bus->tx_seq + 1) % SDPCM_SEQUENCE_WRAP; + + } while ((ret < 0) && retrydata && retries++ < TXRETRIES); + +done: + /* restore pkt buffer pointer before calling tx complete routine */ + skb_pull(pkt, SDPCM_HDRLEN + pad); + brcmf_sdbrcm_sdunlock(bus); + brcmf_txcomplete(bus->drvr, pkt, ret != 0); + brcmf_sdbrcm_sdlock(bus); + + if (free_pkt) + brcmu_pkt_buf_free_skb(pkt); + + return ret; +} + +static uint brcmf_sdbrcm_sendfromq(struct brcmf_bus *bus, uint maxframes) +{ + struct sk_buff *pkt; + u32 intstatus = 0; + uint retries = 0; + int ret = 0, prec_out; + uint cnt = 0; + uint datalen; + u8 tx_prec_map; + + struct brcmf_pub *drvr = bus->drvr; + + brcmf_dbg(TRACE, "Enter\n"); + + tx_prec_map = ~bus->flowcontrol; + + /* Send frames until the limit or some other event */ + for (cnt = 0; (cnt < maxframes) && data_ok(bus); cnt++) { + spin_lock_bh(&bus->txqlock); + pkt = brcmu_pktq_mdeq(&bus->txq, tx_prec_map, &prec_out); + if (pkt == NULL) { + spin_unlock_bh(&bus->txqlock); + break; + } + spin_unlock_bh(&bus->txqlock); + datalen = pkt->len - SDPCM_HDRLEN; + + ret = brcmf_sdbrcm_txpkt(bus, pkt, SDPCM_DATA_CHANNEL, true); + if (ret) + bus->drvr->tx_errors++; else - brcmf_dbg(INFO, "Dongle ready, protocol version %d\n", - bus->sdpcm_ver); + bus->drvr->dstats.tx_bytes += datalen; + + /* In poll mode, need to check for other events */ + if (!bus->intr && cnt) { + /* Check device status, signal pending interrupt */ + r_sdreg32(bus, &intstatus, + offsetof(struct sdpcmd_regs, intstatus), + &retries); + bus->f2txdata++; + if (brcmf_sdcard_regfail(bus->sdiodev)) + break; + if (intstatus & bus->hostintmask) + bus->ipend = true; + } } - /* - * Flow Control has been moved into the RX headers and this out of band - * method isn't used any more. - * remaining backward compatible with older dongles. - */ - if (hmb_data & HMB_DATA_FC) { - fcbits = (hmb_data & HMB_DATA_FCDATA_MASK) >> - HMB_DATA_FCDATA_SHIFT; + /* Deflow-control stack if needed */ + if (drvr->up && (drvr->busstate == BRCMF_BUS_DATA) && + drvr->txoff && (pktq_len(&bus->txq) < TXLOW)) + brcmf_txflowcontrol(drvr, 0, OFF); - if (fcbits & ~bus->flowcontrol) - bus->fc_xoff++; - - if (bus->flowcontrol & ~fcbits) - bus->fc_xon++; - - bus->fc_rcvd++; - bus->flowcontrol = fcbits; - } - - /* Shouldn't be any others */ - if (hmb_data & ~(HMB_DATA_DEVREADY | - HMB_DATA_NAKHANDLED | - HMB_DATA_FC | - HMB_DATA_FWREADY | - HMB_DATA_FCDATA_MASK | HMB_DATA_VERSION_MASK)) - brcmf_dbg(ERROR, "Unknown mailbox data content: 0x%02x\n", - hmb_data); - - return intstatus; + return cnt; } static bool brcmf_sdbrcm_dpc(struct brcmf_bus *bus) @@ -3769,559 +2772,1026 @@ clkwait: return resched; } -void brcmf_sdbrcm_isr(void *arg) +static int brcmf_sdbrcm_dpc_thread(void *data) { - struct brcmf_bus *bus = (struct brcmf_bus *) arg; + struct brcmf_bus *bus = (struct brcmf_bus *) data; - brcmf_dbg(TRACE, "Enter\n"); - - if (!bus) { - brcmf_dbg(ERROR, "bus is null pointer, exiting\n"); - return; + /* This thread doesn't need any user-level access, + * so get rid of all our resources + */ + if (brcmf_dpc_prio > 0) { + struct sched_param param; + param.sched_priority = (brcmf_dpc_prio < MAX_RT_PRIO) ? + brcmf_dpc_prio : (MAX_RT_PRIO - 1); + sched_setscheduler(current, SCHED_FIFO, ¶m); } - if (bus->drvr->busstate == BRCMF_BUS_DOWN) { - brcmf_dbg(ERROR, "bus is down. we have nothing to do\n"); - return; - } - /* Count the interrupt call */ - bus->intrcount++; - bus->ipend = true; - - /* Shouldn't get this interrupt if we're sleeping? */ - if (bus->sleeping) { - brcmf_dbg(ERROR, "INTERRUPT WHILE SLEEPING??\n"); - return; - } - - /* Disable additional interrupts (is this needed now)? */ - if (!bus->intr) - brcmf_dbg(ERROR, "isr w/o interrupt configured!\n"); - - bus->dpc_sched = true; - brcmf_sdbrcm_sched_dpc(bus); -} - -static bool brcmf_sdbrcm_bus_watchdog(struct brcmf_pub *drvr) -{ - struct brcmf_bus *bus; - - brcmf_dbg(TIMER, "Enter\n"); - - bus = drvr->bus; - - if (bus->drvr->dongle_reset) - return false; - - /* Ignore the timer if simulating bus down */ - if (bus->sleeping) - return false; - - brcmf_sdbrcm_sdlock(bus); - - /* Poll period: check device if appropriate. */ - if (bus->poll && (++bus->polltick >= bus->pollrate)) { - u32 intstatus = 0; - - /* Reset poll tick */ - bus->polltick = 0; - - /* Check device if no interrupts */ - if (!bus->intr || (bus->intrcount == bus->lastintrs)) { - - if (!bus->dpc_sched) { - u8 devpend; - devpend = brcmf_sdcard_cfg_read(bus->sdiodev, - SDIO_FUNC_0, SDIO_CCCR_INTx, - NULL); - intstatus = - devpend & (INTR_STATUS_FUNC1 | - INTR_STATUS_FUNC2); - } - - /* If there is something, make like the ISR and - schedule the DPC */ - if (intstatus) { - bus->pollcnt++; - bus->ipend = true; - - bus->dpc_sched = true; - brcmf_sdbrcm_sched_dpc(bus); - - } - } - - /* Update interrupt tracking */ - bus->lastintrs = bus->intrcount; - } -#ifdef BCMDBG - /* Poll for console output periodically */ - if (drvr->busstate == BRCMF_BUS_DATA && brcmf_console_ms != 0) { - bus->console.count += brcmf_watchdog_ms; - if (bus->console.count >= brcmf_console_ms) { - bus->console.count -= brcmf_console_ms; - /* Make sure backplane clock is on */ - brcmf_sdbrcm_clkctl(bus, CLK_AVAIL, false); - if (brcmf_sdbrcm_readconsole(bus) < 0) - brcmf_console_ms = 0; /* On error, - stop trying */ - } - } -#endif /* BCMDBG */ - - /* On idle timeout clear activity flag and/or turn off clock */ - if ((bus->idletime > 0) && (bus->clkstate == CLK_AVAIL)) { - if (++bus->idlecount >= bus->idletime) { - bus->idlecount = 0; - if (bus->activity) { - bus->activity = false; - brcmf_sdbrcm_wd_timer(bus, brcmf_watchdog_ms); + allow_signal(SIGTERM); + /* Run until signal received */ + while (1) { + if (kthread_should_stop()) + break; + if (!wait_for_completion_interruptible(&bus->dpc_wait)) { + /* Call bus dpc unless it indicated down + (then clean stop) */ + if (bus->drvr->busstate != BRCMF_BUS_DOWN) { + if (brcmf_sdbrcm_dpc(bus)) + complete(&bus->dpc_wait); } else { - brcmf_sdbrcm_clkctl(bus, CLK_NONE, false); + brcmf_sdbrcm_bus_stop(bus, true); } - } + } else + break; + } + return 0; +} + +static void brcmf_sdbrcm_dpc_tasklet(unsigned long data) +{ + struct brcmf_bus *bus = (struct brcmf_bus *) data; + + /* Call bus dpc unless it indicated down (then clean stop) */ + if (bus->drvr->busstate != BRCMF_BUS_DOWN) { + if (brcmf_sdbrcm_dpc(bus)) + tasklet_schedule(&bus->tasklet); + } else + brcmf_sdbrcm_bus_stop(bus, true); +} + +static void brcmf_sdbrcm_sched_dpc(struct brcmf_bus *bus) +{ + if (bus->dpc_tsk) { + complete(&bus->dpc_wait); + return; } - brcmf_sdbrcm_sdunlock(bus); - - return bus->ipend; + tasklet_schedule(&bus->tasklet); } -static bool brcmf_sdbrcm_chipmatch(u16 chipid) +int brcmf_sdbrcm_bus_txdata(struct brcmf_bus *bus, struct sk_buff *pkt) { - if (chipid == BCM4329_CHIP_ID) - return true; - return false; -} - -void *brcmf_sdbrcm_probe(u16 bus_no, u16 slot, u16 func, uint bustype, - u32 regsva, struct brcmf_sdio_dev *sdiodev) -{ - int ret; - struct brcmf_bus *bus; - - /* Init global variables at run-time, not as part of the declaration. - * This is required to support init/de-init of the driver. - * Initialization - * of globals as part of the declaration results in non-deterministic - * behavior since the value of the globals may be different on the - * first time that the driver is initialized vs subsequent - * initializations. - */ - brcmf_txbound = BRCMF_TXBOUND; - brcmf_rxbound = BRCMF_RXBOUND; - brcmf_alignctl = true; - brcmf_readahead = true; - retrydata = false; - brcmf_dongle_memsize = 0; - brcmf_txminmax = BRCMF_TXMINMAX; - - forcealign = true; - - brcmf_c_init(); + int ret = -EBADE; + uint datalen, prec; brcmf_dbg(TRACE, "Enter\n"); - /* We make an assumption about address window mappings: - * regsva == SI_ENUM_BASE*/ + datalen = pkt->len; - /* Allocate private bus interface state */ - bus = kzalloc(sizeof(struct brcmf_bus), GFP_ATOMIC); - if (!bus) { - brcmf_dbg(ERROR, "kmalloc of struct dhd_bus failed\n"); - goto fail; - } - bus->sdiodev = sdiodev; - sdiodev->bus = bus; - bus->tx_seq = SDPCM_SEQUENCE_WRAP - 1; - bus->usebufpool = false; /* Use bufpool if allocated, - else use locally malloced rxbuf */ + /* Add space for the header */ + skb_push(pkt, SDPCM_HDRLEN); + /* precondition: IS_ALIGNED((unsigned long)(pkt->data), 2) */ - /* attempt to attach to the dongle */ - if (!(brcmf_sdbrcm_probe_attach(bus, regsva))) { - brcmf_dbg(ERROR, "brcmf_sdbrcm_probe_attach failed\n"); - goto fail; - } + prec = prio2prec((pkt->priority & PRIOMASK)); - spin_lock_init(&bus->txqlock); - init_waitqueue_head(&bus->ctrl_wait); - init_waitqueue_head(&bus->ioctl_resp_wait); + /* Check for existing queue, current flow-control, + pending event, or pending clock */ + if (brcmf_deferred_tx || bus->fcstate || pktq_len(&bus->txq) + || bus->dpc_sched || (!data_ok(bus)) + || (bus->flowcontrol & NBITVAL(prec)) + || (bus->clkstate != CLK_AVAIL)) { + brcmf_dbg(TRACE, "deferring pktq len %d\n", + pktq_len(&bus->txq)); + bus->fcqueued++; - /* Set up the watchdog timer */ - init_timer(&bus->timer); - bus->timer.data = (unsigned long)bus; - bus->timer.function = brcmf_sdbrcm_watchdog; - - /* Initialize thread based operation and lock */ - if ((brcmf_watchdog_prio >= 0) && (brcmf_dpc_prio >= 0)) { - bus->threads_only = true; - sema_init(&bus->sdsem, 1); - } else { - bus->threads_only = false; - spin_lock_init(&bus->sdlock); - } - - if (brcmf_dpc_prio >= 0) { - /* Initialize watchdog thread */ - init_completion(&bus->watchdog_wait); - bus->watchdog_tsk = kthread_run(brcmf_sdbrcm_watchdog_thread, - bus, "brcmf_watchdog"); - if (IS_ERR(bus->watchdog_tsk)) { - printk(KERN_WARNING - "brcmf_watchdog thread failed to start\n"); - bus->watchdog_tsk = NULL; + /* Priority based enq */ + spin_lock_bh(&bus->txqlock); + if (brcmf_c_prec_enq(bus->drvr, &bus->txq, pkt, prec) == + false) { + skb_pull(pkt, SDPCM_HDRLEN); + brcmf_txcomplete(bus->drvr, pkt, false); + brcmu_pkt_buf_free_skb(pkt); + brcmf_dbg(ERROR, "out of bus->txq !!!\n"); + ret = -ENOSR; + } else { + ret = 0; } - } else - bus->watchdog_tsk = NULL; + spin_unlock_bh(&bus->txqlock); - /* Set up the bottom half handler */ - if (brcmf_dpc_prio >= 0) { - /* Initialize DPC thread */ - init_completion(&bus->dpc_wait); - bus->dpc_tsk = kthread_run(brcmf_sdbrcm_dpc_thread, - bus, "brcmf_dpc"); - if (IS_ERR(bus->dpc_tsk)) { - printk(KERN_WARNING - "brcmf_dpc thread failed to start\n"); - bus->dpc_tsk = NULL; - } - } else { - tasklet_init(&bus->tasklet, brcmf_sdbrcm_dpc_tasklet, - (unsigned long)bus); - bus->dpc_tsk = NULL; - } - - /* Attach to the brcmf/OS/network interface */ - bus->drvr = brcmf_attach(bus, SDPCM_RESERVE); - if (!bus->drvr) { - brcmf_dbg(ERROR, "brcmf_attach failed\n"); - goto fail; - } - - /* Allocate buffers */ - if (!(brcmf_sdbrcm_probe_malloc(bus))) { - brcmf_dbg(ERROR, "brcmf_sdbrcm_probe_malloc failed\n"); - goto fail; - } - - if (!(brcmf_sdbrcm_probe_init(bus))) { - brcmf_dbg(ERROR, "brcmf_sdbrcm_probe_init failed\n"); - goto fail; - } - - /* Register interrupt callback, but mask it (not operational yet). */ - brcmf_dbg(INTR, "disable SDIO interrupts (not interested yet)\n"); - ret = brcmf_sdcard_intr_reg(bus->sdiodev); - if (ret != 0) { - brcmf_dbg(ERROR, "FAILED: sdcard_intr_reg returned %d\n", ret); - goto fail; - } - brcmf_dbg(INTR, "registered SDIO interrupt function ok\n"); - - brcmf_dbg(INFO, "completed!!\n"); - - /* if firmware path present try to download and bring up bus */ - ret = brcmf_bus_start(bus->drvr); - if (ret != 0) { - if (ret == -ENOLINK) { - brcmf_dbg(ERROR, "dongle is not responding\n"); - goto fail; - } - } - /* Ok, have the per-port tell the stack we're open for business */ - if (brcmf_net_attach(bus->drvr, 0) != 0) { - brcmf_dbg(ERROR, "Net attach failed!!\n"); - goto fail; - } - - return bus; - -fail: - brcmf_sdbrcm_release(bus); - return NULL; -} - -static bool -brcmf_sdbrcm_probe_attach(struct brcmf_bus *bus, u32 regsva) -{ - u8 clkctl = 0; - int err = 0; - int reg_addr; - u32 reg_val; - - bus->alp_only = true; - - /* Return the window to backplane enumeration space for core access */ - if (brcmf_sdcard_set_sbaddr_window(bus->sdiodev, SI_ENUM_BASE)) - brcmf_dbg(ERROR, "FAILED to return to SI_ENUM_BASE\n"); + if (pktq_len(&bus->txq) >= TXHI) + brcmf_txflowcontrol(bus->drvr, 0, ON); #ifdef BCMDBG - printk(KERN_DEBUG "F1 signature read @0x18000000=0x%4x\n", - brcmf_sdcard_reg_read(bus->sdiodev, SI_ENUM_BASE, 4)); - -#endif /* BCMDBG */ - - /* - * Force PLL off until brcmf_sdbrcm_chip_attach() - * programs PLL control regs - */ - - brcmf_sdcard_cfg_write(bus->sdiodev, SDIO_FUNC_1, - SBSDIO_FUNC1_CHIPCLKCSR, - BRCMF_INIT_CLKCTL1, &err); - if (!err) - clkctl = - brcmf_sdcard_cfg_read(bus->sdiodev, SDIO_FUNC_1, - SBSDIO_FUNC1_CHIPCLKCSR, &err); - - if (err || ((clkctl & ~SBSDIO_AVBITS) != BRCMF_INIT_CLKCTL1)) { - brcmf_dbg(ERROR, "ChipClkCSR access: err %d wrote 0x%02x read 0x%02x\n", - err, BRCMF_INIT_CLKCTL1, clkctl); - goto fail; - } - - if (brcmf_sdbrcm_chip_attach(bus, regsva)) { - brcmf_dbg(ERROR, "brcmf_sdbrcm_chip_attach failed!\n"); - goto fail; - } - - if (!brcmf_sdbrcm_chipmatch((u16) bus->ci->chip)) { - brcmf_dbg(ERROR, "unsupported chip: 0x%04x\n", bus->ci->chip); - goto fail; - } - - brcmf_sdbrcm_sdiod_drive_strength_init(bus, brcmf_sdiod_drive_strength); - - /* Get info on the ARM and SOCRAM cores... */ - brcmf_sdcard_reg_read(bus->sdiodev, - CORE_SB(bus->ci->armcorebase, sbidhigh), 4); - bus->orig_ramsize = bus->ci->ramsize; - if (!(bus->orig_ramsize)) { - brcmf_dbg(ERROR, "failed to find SOCRAM memory!\n"); - goto fail; - } - bus->ramsize = bus->orig_ramsize; - if (brcmf_dongle_memsize) - brcmf_sdbrcm_setmemsize(bus, brcmf_dongle_memsize); - - brcmf_dbg(ERROR, "DHD: dongle ram size is set to %d(orig %d)\n", - bus->ramsize, bus->orig_ramsize); - - /* Set core control so an SDIO reset does a backplane reset */ - reg_addr = bus->ci->buscorebase + - offsetof(struct sdpcmd_regs, corecontrol); - reg_val = brcmf_sdcard_reg_read(bus->sdiodev, reg_addr, sizeof(u32)); - brcmf_sdcard_reg_write(bus->sdiodev, reg_addr, sizeof(u32), - reg_val | CC_BPRESEN); - - brcmu_pktq_init(&bus->txq, (PRIOMASK + 1), TXQLEN); - - /* Locate an appropriately-aligned portion of hdrbuf */ - bus->rxhdr = (u8 *) roundup((unsigned long)&bus->hdrbuf[0], - BRCMF_SDALIGN); - - /* Set the poll and/or interrupt flags */ - bus->intr = (bool) brcmf_intr; - bus->poll = (bool) brcmf_poll; - if (bus->poll) - bus->pollrate = 1; - - return true; - -fail: - return false; -} - -static bool brcmf_sdbrcm_probe_malloc(struct brcmf_bus *bus) -{ - brcmf_dbg(TRACE, "Enter\n"); - - if (bus->drvr->maxctl) { - bus->rxblen = - roundup((bus->drvr->maxctl + SDPCM_HDRLEN), - ALIGNMENT) + BRCMF_SDALIGN; - bus->rxbuf = kmalloc(bus->rxblen, GFP_ATOMIC); - if (!(bus->rxbuf)) { - brcmf_dbg(ERROR, "kmalloc of %d-byte rxbuf failed\n", - bus->rxblen); - goto fail; + if (pktq_plen(&bus->txq, prec) > qcount[prec]) + qcount[prec] = pktq_plen(&bus->txq, prec); +#endif + /* Schedule DPC if needed to send queued packet(s) */ + if (brcmf_deferred_tx && !bus->dpc_sched) { + bus->dpc_sched = true; + brcmf_sdbrcm_sched_dpc(bus); } + } else { + /* Lock: we're about to use shared data/code (and SDIO) */ + brcmf_sdbrcm_sdlock(bus); + + /* Otherwise, send it now */ + bus_wake(bus); + /* Make sure back plane ht clk is on, no pending allowed */ + brcmf_sdbrcm_clkctl(bus, CLK_AVAIL, true); + + brcmf_dbg(TRACE, "calling txpkt\n"); + ret = brcmf_sdbrcm_txpkt(bus, pkt, SDPCM_DATA_CHANNEL, true); + if (ret) + bus->drvr->tx_errors++; + else + bus->drvr->dstats.tx_bytes += datalen; + + if (bus->idletime == BRCMF_IDLE_IMMEDIATE && + !bus->dpc_sched) { + bus->activity = false; + brcmf_sdbrcm_clkctl(bus, CLK_NONE, true); + } + + brcmf_sdbrcm_sdunlock(bus); } - /* Allocate buffer to receive glomed packet */ - bus->databuf = kmalloc(MAX_DATA_BUF, GFP_ATOMIC); - if (!(bus->databuf)) { - brcmf_dbg(ERROR, "kmalloc of %d-byte databuf failed\n", - MAX_DATA_BUF); - /* release rxbuf which was already located as above */ - if (!bus->rxblen) - kfree(bus->rxbuf); - goto fail; - } - - /* Align the buffer */ - if ((unsigned long)bus->databuf % BRCMF_SDALIGN) - bus->dataptr = bus->databuf + (BRCMF_SDALIGN - - ((unsigned long)bus->databuf % BRCMF_SDALIGN)); - else - bus->dataptr = bus->databuf; - - return true; - -fail: - return false; -} - -static bool brcmf_sdbrcm_probe_init(struct brcmf_bus *bus) -{ - brcmf_dbg(TRACE, "Enter\n"); - - /* Disable F2 to clear any intermediate frame state on the dongle */ - brcmf_sdcard_cfg_write(bus->sdiodev, SDIO_FUNC_0, SDIO_CCCR_IOEx, - SDIO_FUNC_ENABLE_1, NULL); - - bus->drvr->busstate = BRCMF_BUS_DOWN; - bus->sleeping = false; - bus->rxflow = false; - - /* Done with backplane-dependent accesses, can drop clock... */ - brcmf_sdcard_cfg_write(bus->sdiodev, SDIO_FUNC_1, - SBSDIO_FUNC1_CHIPCLKCSR, 0, NULL); - - /* ...and initialize clock/power states */ - bus->clkstate = CLK_SDONLY; - bus->idletime = (s32) brcmf_idletime; - bus->idleclock = BRCMF_IDLE_ACTIVE; - - /* Query the F2 block size, set roundup accordingly */ - bus->blocksize = bus->sdiodev->func[2]->cur_blksize; - bus->roundup = min(max_roundup, bus->blocksize); - - /* bus module does not support packet chaining */ - bus->use_rxchain = false; - bus->sd_rxchain = false; - - return true; -} - -static bool -brcmf_sdbrcm_download_firmware(struct brcmf_bus *bus) -{ - bool ret; - - /* Download the firmware */ - brcmf_sdbrcm_clkctl(bus, CLK_AVAIL, false); - - ret = _brcmf_sdbrcm_download_firmware(bus) == 0; - - brcmf_sdbrcm_clkctl(bus, CLK_SDONLY, false); - return ret; } -/* Detach and free everything */ -static void brcmf_sdbrcm_release(struct brcmf_bus *bus) +static int +brcmf_sdbrcm_membytes(struct brcmf_bus *bus, bool write, u32 address, u8 *data, + uint size) { - brcmf_dbg(TRACE, "Enter\n"); + int bcmerror = 0; + u32 sdaddr; + uint dsize; - if (bus) { - /* De-register interrupt handler */ - brcmf_sdcard_intr_dereg(bus->sdiodev); + /* Determine initial transfer parameters */ + sdaddr = address & SBSDIO_SB_OFT_ADDR_MASK; + if ((sdaddr + size) & SBSDIO_SBWINDOW_MASK) + dsize = (SBSDIO_SB_OFT_ADDR_LIMIT - sdaddr); + else + dsize = size; - if (bus->drvr) { - brcmf_detach(bus->drvr); - brcmf_sdbrcm_release_dongle(bus); - bus->drvr = NULL; + /* Set the backplane window to include the start address */ + bcmerror = brcmf_sdcard_set_sbaddr_window(bus->sdiodev, address); + if (bcmerror) { + brcmf_dbg(ERROR, "window change failed\n"); + goto xfer_done; + } + + /* Do the transfer(s) */ + while (size) { + brcmf_dbg(INFO, "%s %d bytes at offset 0x%08x in window 0x%08x\n", + write ? "write" : "read", dsize, + sdaddr, address & SBSDIO_SBWINDOW_MASK); + bcmerror = brcmf_sdcard_rwdata(bus->sdiodev, write, + sdaddr, data, dsize); + if (bcmerror) { + brcmf_dbg(ERROR, "membytes transfer failed\n"); + break; } - brcmf_sdbrcm_release_malloc(bus); - - kfree(bus); + /* Adjust for next transfer (if any) */ + size -= dsize; + if (size) { + data += dsize; + address += dsize; + bcmerror = brcmf_sdcard_set_sbaddr_window(bus->sdiodev, + address); + if (bcmerror) { + brcmf_dbg(ERROR, "window change failed\n"); + break; + } + sdaddr = 0; + dsize = min_t(uint, SBSDIO_SB_OFT_ADDR_LIMIT, size); + } } - brcmf_dbg(TRACE, "Disconnected\n"); +xfer_done: + /* Return the window to backplane enumeration space for core access */ + if (brcmf_sdcard_set_sbaddr_window(bus->sdiodev, bus->sdiodev->sbwad)) + brcmf_dbg(ERROR, "FAILED to set window back to 0x%x\n", + bus->sdiodev->sbwad); + + return bcmerror; } -static void brcmf_sdbrcm_release_malloc(struct brcmf_bus *bus) +#ifdef BCMDBG +static int +brcmf_sdbrcm_readshared(struct brcmf_bus *bus, struct sdpcm_shared *sh) { + u32 addr; + int rv; + + /* Read last word in memory to determine address of + sdpcm_shared structure */ + rv = brcmf_sdbrcm_membytes(bus, false, bus->ramsize - 4, (u8 *)&addr, + 4); + if (rv < 0) + return rv; + + addr = le32_to_cpu(addr); + + brcmf_dbg(INFO, "sdpcm_shared address 0x%08X\n", addr); + + /* + * Check if addr is valid. + * NVRAM length at the end of memory should have been overwritten. + */ + if (addr == 0 || ((~addr >> 16) & 0xffff) == (addr & 0xffff)) { + brcmf_dbg(ERROR, "address (0x%08x) of sdpcm_shared invalid\n", + addr); + return -EBADE; + } + + /* Read rte_shared structure */ + rv = brcmf_sdbrcm_membytes(bus, false, addr, (u8 *) sh, + sizeof(struct sdpcm_shared)); + if (rv < 0) + return rv; + + /* Endianness */ + sh->flags = le32_to_cpu(sh->flags); + sh->trap_addr = le32_to_cpu(sh->trap_addr); + sh->assert_exp_addr = le32_to_cpu(sh->assert_exp_addr); + sh->assert_file_addr = le32_to_cpu(sh->assert_file_addr); + sh->assert_line = le32_to_cpu(sh->assert_line); + sh->console_addr = le32_to_cpu(sh->console_addr); + sh->msgtrace_addr = le32_to_cpu(sh->msgtrace_addr); + + if ((sh->flags & SDPCM_SHARED_VERSION_MASK) != SDPCM_SHARED_VERSION) { + brcmf_dbg(ERROR, "sdpcm_shared version %d in brcmf is different than sdpcm_shared version %d in dongle\n", + SDPCM_SHARED_VERSION, + sh->flags & SDPCM_SHARED_VERSION_MASK); + return -EBADE; + } + + return 0; +} + +static int brcmf_sdbrcm_mem_dump(struct brcmf_bus *bus) +{ + int ret = 0; + int size; /* Full mem size */ + int start = 0; /* Start address */ + int read_size = 0; /* Read size of each iteration */ + u8 *buf = NULL, *databuf = NULL; + + /* Get full mem size */ + size = bus->ramsize; + buf = kmalloc(size, GFP_ATOMIC); + if (!buf) { + brcmf_dbg(ERROR, "Out of memory (%d bytes)\n", size); + return -1; + } + + /* Read mem content */ + printk(KERN_DEBUG "Dump dongle memory"); + databuf = buf; + while (size) { + read_size = min(MEMBLOCK, size); + ret = brcmf_sdbrcm_membytes(bus, false, start, databuf, + read_size); + if (ret) { + brcmf_dbg(ERROR, "Error membytes %d\n", ret); + kfree(buf); + return -1; + } + printk("."); + + /* Decrement size and increment start address */ + size -= read_size; + start += read_size; + databuf += read_size; + } + printk(KERN_DEBUG "Done\n"); + + /* free buf before return !!! */ + if (brcmf_write_to_file(bus->drvr, buf, bus->ramsize)) { + brcmf_dbg(ERROR, "Error writing to files\n"); + return -1; + } + + /* buf free handled in brcmf_write_to_file, not here */ + return 0; +} + +static int brcmf_sdbrcm_checkdied(struct brcmf_bus *bus, u8 *data, uint size) +{ + int bcmerror = 0; + uint msize = 512; + char *mbuffer = NULL; + uint maxstrlen = 256; + char *str = NULL; + struct brcmf_trap tr; + struct sdpcm_shared sdpcm_shared; + struct brcmu_strbuf strbuf; + brcmf_dbg(TRACE, "Enter\n"); - if (bus->drvr && bus->drvr->dongle_reset) - return; + if (data == NULL) { + /* + * Called after a rx ctrl timeout. "data" is NULL. + * allocate memory to trace the trap or assert. + */ + size = msize; + mbuffer = data = kmalloc(msize, GFP_ATOMIC); + if (mbuffer == NULL) { + brcmf_dbg(ERROR, "kmalloc(%d) failed\n", msize); + bcmerror = -ENOMEM; + goto done; + } + } - kfree(bus->rxbuf); - bus->rxctl = bus->rxbuf = NULL; + str = kmalloc(maxstrlen, GFP_ATOMIC); + if (str == NULL) { + brcmf_dbg(ERROR, "kmalloc(%d) failed\n", maxstrlen); + bcmerror = -ENOMEM; + goto done; + } + + bcmerror = brcmf_sdbrcm_readshared(bus, &sdpcm_shared); + if (bcmerror < 0) + goto done; + + brcmu_binit(&strbuf, data, size); + + brcmu_bprintf(&strbuf, + "msgtrace address : 0x%08X\nconsole address : 0x%08X\n", + sdpcm_shared.msgtrace_addr, sdpcm_shared.console_addr); + + if ((sdpcm_shared.flags & SDPCM_SHARED_ASSERT_BUILT) == 0) + /* NOTE: Misspelled assert is intentional - DO NOT FIX. + * (Avoids conflict with real asserts for programmatic + * parsing of output.) + */ + brcmu_bprintf(&strbuf, "Assrt not built in dongle\n"); + + if ((sdpcm_shared.flags & (SDPCM_SHARED_ASSERT | SDPCM_SHARED_TRAP)) == + 0) { + /* NOTE: Misspelled assert is intentional - DO NOT FIX. + * (Avoids conflict with real asserts for programmatic + * parsing of output.) + */ + brcmu_bprintf(&strbuf, "No trap%s in dongle", + (sdpcm_shared.flags & SDPCM_SHARED_ASSERT_BUILT) + ? "/assrt" : ""); + } else { + if (sdpcm_shared.flags & SDPCM_SHARED_ASSERT) { + /* Download assert */ + brcmu_bprintf(&strbuf, "Dongle assert"); + if (sdpcm_shared.assert_exp_addr != 0) { + str[0] = '\0'; + bcmerror = brcmf_sdbrcm_membytes(bus, false, + sdpcm_shared.assert_exp_addr, + (u8 *) str, maxstrlen); + if (bcmerror < 0) + goto done; + + str[maxstrlen - 1] = '\0'; + brcmu_bprintf(&strbuf, " expr \"%s\"", str); + } + + if (sdpcm_shared.assert_file_addr != 0) { + str[0] = '\0'; + bcmerror = brcmf_sdbrcm_membytes(bus, false, + sdpcm_shared.assert_file_addr, + (u8 *) str, maxstrlen); + if (bcmerror < 0) + goto done; + + str[maxstrlen - 1] = '\0'; + brcmu_bprintf(&strbuf, " file \"%s\"", str); + } + + brcmu_bprintf(&strbuf, " line %d ", + sdpcm_shared.assert_line); + } + + if (sdpcm_shared.flags & SDPCM_SHARED_TRAP) { + bcmerror = brcmf_sdbrcm_membytes(bus, false, + sdpcm_shared.trap_addr, (u8 *)&tr, + sizeof(struct brcmf_trap)); + if (bcmerror < 0) + goto done; + + brcmu_bprintf(&strbuf, + "Dongle trap type 0x%x @ epc 0x%x, cpsr 0x%x, spsr 0x%x, sp 0x%x," + "lp 0x%x, rpc 0x%x Trap offset 0x%x, " + "r0 0x%x, r1 0x%x, r2 0x%x, r3 0x%x, r4 0x%x, r5 0x%x, r6 0x%x, r7 0x%x\n", + tr.type, tr.epc, tr.cpsr, tr.spsr, tr.r13, + tr.r14, tr.pc, sdpcm_shared.trap_addr, + tr.r0, tr.r1, tr.r2, tr.r3, tr.r4, tr.r5, + tr.r6, tr.r7); + } + } + + if (sdpcm_shared.flags & (SDPCM_SHARED_ASSERT | SDPCM_SHARED_TRAP)) + brcmf_dbg(ERROR, "%s\n", strbuf.origbuf); + +#ifdef BCMDBG + if (sdpcm_shared.flags & SDPCM_SHARED_TRAP) + /* Mem dump to a file on device */ + brcmf_sdbrcm_mem_dump(bus); + +#endif /* BCMDBG */ + +done: + kfree(mbuffer); + kfree(str); + + return bcmerror; +} + +#define CONSOLE_LINE_MAX 192 + +static int brcmf_sdbrcm_readconsole(struct brcmf_bus *bus) +{ + struct brcmf_console *c = &bus->console; + u8 line[CONSOLE_LINE_MAX], ch; + u32 n, idx, addr; + int rv; + + /* Don't do anything until FWREADY updates console address */ + if (bus->console_addr == 0) + return 0; + + /* Read console log struct */ + addr = bus->console_addr + offsetof(struct rte_console, log); + rv = brcmf_sdbrcm_membytes(bus, false, addr, (u8 *)&c->log, + sizeof(c->log)); + if (rv < 0) + return rv; + + /* Allocate console buffer (one time only) */ + if (c->buf == NULL) { + c->bufsize = le32_to_cpu(c->log.buf_size); + c->buf = kmalloc(c->bufsize, GFP_ATOMIC); + if (c->buf == NULL) + return -ENOMEM; + } + + idx = le32_to_cpu(c->log.idx); + + /* Protect against corrupt value */ + if (idx > c->bufsize) + return -EBADE; + + /* Skip reading the console buffer if the index pointer + has not moved */ + if (idx == c->last) + return 0; + + /* Read the console buffer */ + addr = le32_to_cpu(c->log.buf); + rv = brcmf_sdbrcm_membytes(bus, false, addr, c->buf, c->bufsize); + if (rv < 0) + return rv; + + while (c->last != idx) { + for (n = 0; n < CONSOLE_LINE_MAX - 2; n++) { + if (c->last == idx) { + /* This would output a partial line. + * Instead, back up + * the buffer pointer and output this + * line next time around. + */ + if (c->last >= n) + c->last -= n; + else + c->last = c->bufsize - n; + goto break2; + } + ch = c->buf[c->last]; + c->last = (c->last + 1) % c->bufsize; + if (ch == '\n') + break; + line[n] = ch; + } + + if (n > 0) { + if (line[n - 1] == '\r') + n--; + line[n] = 0; + printk(KERN_DEBUG "CONSOLE: %s\n", line); + } + } +break2: + + return 0; +} +#endif /* BCMDBG */ + +int +brcmf_sdbrcm_bus_txctl(struct brcmf_bus *bus, unsigned char *msg, uint msglen) +{ + u8 *frame; + u16 len; + u32 swheader; + uint retries = 0; + u8 doff = 0; + int ret = -1; + int i; + + brcmf_dbg(TRACE, "Enter\n"); + + if (bus->drvr->dongle_reset) + return -EIO; + + /* Back the pointer to make a room for bus header */ + frame = msg - SDPCM_HDRLEN; + len = (msglen += SDPCM_HDRLEN); + + /* Add alignment padding (optional for ctl frames) */ + if (brcmf_alignctl) { + doff = ((unsigned long)frame % BRCMF_SDALIGN); + if (doff) { + frame -= doff; + len += doff; + msglen += doff; + memset(frame, 0, doff + SDPCM_HDRLEN); + } + /* precondition: doff < BRCMF_SDALIGN */ + } + doff += SDPCM_HDRLEN; + + /* Round send length to next SDIO block */ + if (bus->roundup && bus->blocksize && (len > bus->blocksize)) { + u16 pad = bus->blocksize - (len % bus->blocksize); + if ((pad <= bus->roundup) && (pad < bus->blocksize)) + len += pad; + } else if (len % BRCMF_SDALIGN) { + len += BRCMF_SDALIGN - (len % BRCMF_SDALIGN); + } + + /* Satisfy length-alignment requirements */ + if (forcealign && (len & (ALIGNMENT - 1))) + len = roundup(len, ALIGNMENT); + + /* precondition: IS_ALIGNED((unsigned long)frame, 2) */ + + /* Need to lock here to protect txseq and SDIO tx calls */ + brcmf_sdbrcm_sdlock(bus); + + bus_wake(bus); + + /* Make sure backplane clock is on */ + brcmf_sdbrcm_clkctl(bus, CLK_AVAIL, false); + + /* Hardware tag: 2 byte len followed by 2 byte ~len check (all LE) */ + *(u16 *) frame = cpu_to_le16((u16) msglen); + *(((u16 *) frame) + 1) = cpu_to_le16(~msglen); + + /* Software tag: channel, sequence number, data offset */ + swheader = + ((SDPCM_CONTROL_CHANNEL << SDPCM_CHANNEL_SHIFT) & + SDPCM_CHANNEL_MASK) + | bus->tx_seq | ((doff << SDPCM_DOFFSET_SHIFT) & + SDPCM_DOFFSET_MASK); + put_unaligned_le32(swheader, frame + SDPCM_FRAMETAG_LEN); + put_unaligned_le32(0, frame + SDPCM_FRAMETAG_LEN + sizeof(swheader)); + + if (!data_ok(bus)) { + brcmf_dbg(INFO, "No bus credit bus->tx_max %d, bus->tx_seq %d\n", + bus->tx_max, bus->tx_seq); + bus->ctrl_frame_stat = true; + /* Send from dpc */ + bus->ctrl_frame_buf = frame; + bus->ctrl_frame_len = len; + + brcmf_sdbrcm_wait_for_event(bus, &bus->ctrl_frame_stat); + + if (bus->ctrl_frame_stat == false) { + brcmf_dbg(INFO, "ctrl_frame_stat == false\n"); + ret = 0; + } else { + brcmf_dbg(INFO, "ctrl_frame_stat == true\n"); + ret = -1; + } + } + + if (ret == -1) { +#ifdef BCMDBG + if (BRCMF_BYTES_ON() && BRCMF_CTL_ON()) { + printk(KERN_DEBUG "Tx Frame:\n"); + print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, + frame, len); + } else if (BRCMF_HDRS_ON()) { + printk(KERN_DEBUG "TxHdr:\n"); + print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, + frame, min_t(u16, len, 16)); + } +#endif + + do { + bus->ctrl_frame_stat = false; + ret = brcmf_sdbrcm_send_buf(bus, bus->sdiodev->sbwad, + SDIO_FUNC_2, F2SYNC, frame, len, NULL); + + if (ret < 0) { + /* On failure, abort the command and + terminate the frame */ + brcmf_dbg(INFO, "sdio error %d, abort command and terminate frame\n", + ret); + bus->tx_sderrs++; + + brcmf_sdcard_abort(bus->sdiodev, SDIO_FUNC_2); + + brcmf_sdcard_cfg_write(bus->sdiodev, + SDIO_FUNC_1, + SBSDIO_FUNC1_FRAMECTRL, + SFC_WF_TERM, NULL); + bus->f1regdata++; + + for (i = 0; i < 3; i++) { + u8 hi, lo; + hi = brcmf_sdcard_cfg_read(bus->sdiodev, + SDIO_FUNC_1, + SBSDIO_FUNC1_WFRAMEBCHI, + NULL); + lo = brcmf_sdcard_cfg_read(bus->sdiodev, + SDIO_FUNC_1, + SBSDIO_FUNC1_WFRAMEBCLO, + NULL); + bus->f1regdata += 2; + if ((hi == 0) && (lo == 0)) + break; + } + + } + if (ret == 0) + bus->tx_seq = + (bus->tx_seq + 1) % SDPCM_SEQUENCE_WRAP; + + } while ((ret < 0) && retries++ < TXRETRIES); + } + + if ((bus->idletime == BRCMF_IDLE_IMMEDIATE) && !bus->dpc_sched) { + bus->activity = false; + brcmf_sdbrcm_clkctl(bus, CLK_NONE, true); + } + + brcmf_sdbrcm_sdunlock(bus); + + if (ret) + bus->drvr->tx_ctlerrs++; + else + bus->drvr->tx_ctlpkts++; + + return ret ? -EIO : 0; +} + +int +brcmf_sdbrcm_bus_rxctl(struct brcmf_bus *bus, unsigned char *msg, uint msglen) +{ + int timeleft; + uint rxlen = 0; + bool pending; + + brcmf_dbg(TRACE, "Enter\n"); + + if (bus->drvr->dongle_reset) + return -EIO; + + /* Wait until control frame is available */ + timeleft = brcmf_sdbrcm_ioctl_resp_wait(bus, &bus->rxlen, &pending); + + brcmf_sdbrcm_sdlock(bus); + rxlen = bus->rxlen; + memcpy(msg, bus->rxctl, min(msglen, rxlen)); bus->rxlen = 0; + brcmf_sdbrcm_sdunlock(bus); - kfree(bus->databuf); - bus->databuf = NULL; -} - -static void brcmf_sdbrcm_release_dongle(struct brcmf_bus *bus) -{ - brcmf_dbg(TRACE, "Enter\n"); - - if (bus->drvr && bus->drvr->dongle_reset) - return; - - if (bus->ci) { - brcmf_sdbrcm_clkctl(bus, CLK_AVAIL, false); - brcmf_sdbrcm_clkctl(bus, CLK_NONE, false); - brcmf_sdbrcm_chip_detach(bus); - if (bus->vars && bus->varsz) - kfree(bus->vars); - bus->vars = NULL; + if (rxlen) { + brcmf_dbg(CTL, "resumed on rxctl frame, got %d expected %d\n", + rxlen, msglen); + } else if (timeleft == 0) { + brcmf_dbg(ERROR, "resumed on timeout\n"); +#ifdef BCMDBG + brcmf_sdbrcm_sdlock(bus); + brcmf_sdbrcm_checkdied(bus, NULL, 0); + brcmf_sdbrcm_sdunlock(bus); +#endif /* BCMDBG */ + } else if (pending == true) { + brcmf_dbg(CTL, "cancelled\n"); + return -ERESTARTSYS; + } else { + brcmf_dbg(CTL, "resumed for unknown reason?\n"); +#ifdef BCMDBG + brcmf_sdbrcm_sdlock(bus); + brcmf_sdbrcm_checkdied(bus, NULL, 0); + brcmf_sdbrcm_sdunlock(bus); +#endif /* BCMDBG */ } - brcmf_dbg(TRACE, "Disconnected\n"); + if (rxlen) + bus->drvr->rx_ctlpkts++; + else + bus->drvr->rx_ctlerrs++; + + return rxlen ? (int)rxlen : -ETIMEDOUT; } -void brcmf_sdbrcm_disconnect(void *ptr) +static int brcmf_sdbrcm_downloadvars(struct brcmf_bus *bus, void *arg, int len) { - struct brcmf_bus *bus = (struct brcmf_bus *)ptr; + int bcmerror = 0; brcmf_dbg(TRACE, "Enter\n"); - if (bus) - brcmf_sdbrcm_release(bus); + /* Basic sanity checks */ + if (bus->drvr->up) { + bcmerror = -EISCONN; + goto err; + } + if (!len) { + bcmerror = -EOVERFLOW; + goto err; + } - brcmf_dbg(TRACE, "Disconnected\n"); + /* Free the old ones and replace with passed variables */ + kfree(bus->vars); + + bus->vars = kmalloc(len, GFP_ATOMIC); + bus->varsz = bus->vars ? len : 0; + if (bus->vars == NULL) { + bcmerror = -ENOMEM; + goto err; + } + + /* Copy the passed variables, which should include the + terminating double-null */ + memcpy(bus->vars, arg, bus->varsz); +err: + return bcmerror; } -int brcmf_bus_register(void) +static int brcmf_sdbrcm_write_vars(struct brcmf_bus *bus) { - brcmf_dbg(TRACE, "Enter\n"); + int bcmerror = 0; + u32 varsize; + u32 varaddr; + u8 *vbuffer; + u32 varsizew; +#ifdef BCMDBG + char *nvram_ularray; +#endif /* BCMDBG */ - /* Sanity check on the module parameters */ - do { - /* Both watchdog and DPC as tasklets are ok */ - if ((brcmf_watchdog_prio < 0) && (brcmf_dpc_prio < 0)) - break; + /* Even if there are no vars are to be written, we still + need to set the ramsize. */ + varsize = bus->varsz ? roundup(bus->varsz, 4) : 0; + varaddr = (bus->ramsize - 4) - varsize; - /* If both watchdog and DPC are threads, TX must be deferred */ - if ((brcmf_watchdog_prio >= 0) && (brcmf_dpc_prio >= 0) - && brcmf_deferred_tx) - break; + if (bus->vars) { + vbuffer = kzalloc(varsize, GFP_ATOMIC); + if (!vbuffer) + return -ENOMEM; - brcmf_dbg(ERROR, "Invalid module parameters.\n"); - return -EINVAL; - } while (0); + memcpy(vbuffer, bus->vars, bus->varsz); - return brcmf_sdio_register(); + /* Write the vars list */ + bcmerror = + brcmf_sdbrcm_membytes(bus, true, varaddr, vbuffer, varsize); +#ifdef BCMDBG + /* Verify NVRAM bytes */ + brcmf_dbg(INFO, "Compare NVRAM dl & ul; varsize=%d\n", varsize); + nvram_ularray = kmalloc(varsize, GFP_ATOMIC); + if (!nvram_ularray) + return -ENOMEM; + + /* Upload image to verify downloaded contents. */ + memset(nvram_ularray, 0xaa, varsize); + + /* Read the vars list to temp buffer for comparison */ + bcmerror = + brcmf_sdbrcm_membytes(bus, false, varaddr, nvram_ularray, + varsize); + if (bcmerror) { + brcmf_dbg(ERROR, "error %d on reading %d nvram bytes at 0x%08x\n", + bcmerror, varsize, varaddr); + } + /* Compare the org NVRAM with the one read from RAM */ + if (memcmp(vbuffer, nvram_ularray, varsize)) + brcmf_dbg(ERROR, "Downloaded NVRAM image is corrupted\n"); + else + brcmf_dbg(ERROR, "Download/Upload/Compare of NVRAM ok\n"); + + kfree(nvram_ularray); +#endif /* BCMDBG */ + + kfree(vbuffer); + } + + /* adjust to the user specified RAM */ + brcmf_dbg(INFO, "Physical memory size: %d, usable memory size: %d\n", + bus->orig_ramsize, bus->ramsize); + brcmf_dbg(INFO, "Vars are at %d, orig varsize is %d\n", + varaddr, varsize); + varsize = ((bus->orig_ramsize - 4) - varaddr); + + /* + * Determine the length token: + * Varsize, converted to words, in lower 16-bits, checksum + * in upper 16-bits. + */ + if (bcmerror) { + varsizew = 0; + } else { + varsizew = varsize / 4; + varsizew = (~varsizew << 16) | (varsizew & 0x0000FFFF); + varsizew = cpu_to_le32(varsizew); + } + + brcmf_dbg(INFO, "New varsize is %d, length token=0x%08x\n", + varsize, varsizew); + + /* Write the length token to the last word */ + bcmerror = brcmf_sdbrcm_membytes(bus, true, (bus->orig_ramsize - 4), + (u8 *)&varsizew, 4); + + return bcmerror; } -void brcmf_bus_unregister(void) +static void +brcmf_sdbrcm_chip_disablecore(struct brcmf_sdio_dev *sdiodev, u32 corebase) { - brcmf_dbg(TRACE, "Enter\n"); + u32 regdata; - brcmf_sdio_unregister(); + regdata = brcmf_sdcard_reg_read(sdiodev, + CORE_SB(corebase, sbtmstatelow), 4); + if (regdata & SBTML_RESET) + return; + + regdata = brcmf_sdcard_reg_read(sdiodev, + CORE_SB(corebase, sbtmstatelow), 4); + if ((regdata & (SICF_CLOCK_EN << SBTML_SICF_SHIFT)) != 0) { + /* + * set target reject and spin until busy is clear + * (preserve core-specific bits) + */ + regdata = brcmf_sdcard_reg_read(sdiodev, + CORE_SB(corebase, sbtmstatelow), 4); + brcmf_sdcard_reg_write(sdiodev, CORE_SB(corebase, sbtmstatelow), + 4, regdata | SBTML_REJ); + + regdata = brcmf_sdcard_reg_read(sdiodev, + CORE_SB(corebase, sbtmstatelow), 4); + udelay(1); + SPINWAIT((brcmf_sdcard_reg_read(sdiodev, + CORE_SB(corebase, sbtmstatehigh), 4) & + SBTMH_BUSY), 100000); + + regdata = brcmf_sdcard_reg_read(sdiodev, + CORE_SB(corebase, sbtmstatehigh), 4); + if (regdata & SBTMH_BUSY) + brcmf_dbg(ERROR, "ARM core still busy\n"); + + regdata = brcmf_sdcard_reg_read(sdiodev, + CORE_SB(corebase, sbidlow), 4); + if (regdata & SBIDL_INIT) { + regdata = brcmf_sdcard_reg_read(sdiodev, + CORE_SB(corebase, sbimstate), 4) | + SBIM_RJ; + brcmf_sdcard_reg_write(sdiodev, + CORE_SB(corebase, sbimstate), 4, + regdata); + regdata = brcmf_sdcard_reg_read(sdiodev, + CORE_SB(corebase, sbimstate), 4); + udelay(1); + SPINWAIT((brcmf_sdcard_reg_read(sdiodev, + CORE_SB(corebase, sbimstate), 4) & + SBIM_BY), 100000); + } + + /* set reset and reject while enabling the clocks */ + brcmf_sdcard_reg_write(sdiodev, + CORE_SB(corebase, sbtmstatelow), 4, + (((SICF_FGC | SICF_CLOCK_EN) << SBTML_SICF_SHIFT) | + SBTML_REJ | SBTML_RESET)); + regdata = brcmf_sdcard_reg_read(sdiodev, + CORE_SB(corebase, sbtmstatelow), 4); + udelay(10); + + /* clear the initiator reject bit */ + regdata = brcmf_sdcard_reg_read(sdiodev, + CORE_SB(corebase, sbidlow), 4); + if (regdata & SBIDL_INIT) { + regdata = brcmf_sdcard_reg_read(sdiodev, + CORE_SB(corebase, sbimstate), 4) & + ~SBIM_RJ; + brcmf_sdcard_reg_write(sdiodev, + CORE_SB(corebase, sbimstate), 4, + regdata); + } + } + + /* leave reset and reject asserted */ + brcmf_sdcard_reg_write(sdiodev, CORE_SB(corebase, sbtmstatelow), 4, + (SBTML_REJ | SBTML_RESET)); + udelay(1); } -struct device *brcmf_bus_get_device(struct brcmf_bus *bus) +static void +brcmf_sdbrcm_chip_resetcore(struct brcmf_sdio_dev *sdiodev, u32 corebase) { - return &bus->sdiodev->func[2]->dev; + u32 regdata; + + /* + * Must do the disable sequence first to work for + * arbitrary current core state. + */ + brcmf_sdbrcm_chip_disablecore(sdiodev, corebase); + + /* + * Now do the initialization sequence. + * set reset while enabling the clock and + * forcing them on throughout the core + */ + brcmf_sdcard_reg_write(sdiodev, CORE_SB(corebase, sbtmstatelow), 4, + ((SICF_FGC | SICF_CLOCK_EN) << SBTML_SICF_SHIFT) | + SBTML_RESET); + udelay(1); + + regdata = brcmf_sdcard_reg_read(sdiodev, + CORE_SB(corebase, sbtmstatehigh), 4); + if (regdata & SBTMH_SERR) + brcmf_sdcard_reg_write(sdiodev, + CORE_SB(corebase, sbtmstatehigh), 4, 0); + + regdata = brcmf_sdcard_reg_read(sdiodev, + CORE_SB(corebase, sbimstate), 4); + if (regdata & (SBIM_IBE | SBIM_TO)) + brcmf_sdcard_reg_write(sdiodev, CORE_SB(corebase, sbimstate), 4, + regdata & ~(SBIM_IBE | SBIM_TO)); + + /* clear reset and allow it to propagate throughout the core */ + brcmf_sdcard_reg_write(sdiodev, CORE_SB(corebase, sbtmstatelow), 4, + (SICF_FGC << SBTML_SICF_SHIFT) | + (SICF_CLOCK_EN << SBTML_SICF_SHIFT)); + udelay(1); + + /* leave clock enabled */ + brcmf_sdcard_reg_write(sdiodev, CORE_SB(corebase, sbtmstatelow), 4, + (SICF_CLOCK_EN << SBTML_SICF_SHIFT)); + udelay(1); } +static int brcmf_sdbrcm_download_state(struct brcmf_bus *bus, bool enter) +{ + uint retries; + u32 regdata; + int bcmerror = 0; + + /* To enter download state, disable ARM and reset SOCRAM. + * To exit download state, simply reset ARM (default is RAM boot). + */ + if (enter) { + bus->alp_only = true; + + brcmf_sdbrcm_chip_disablecore(bus->sdiodev, + bus->ci->armcorebase); + + brcmf_sdbrcm_chip_resetcore(bus->sdiodev, bus->ci->ramcorebase); + + /* Clear the top bit of memory */ + if (bus->ramsize) { + u32 zeros = 0; + brcmf_sdbrcm_membytes(bus, true, bus->ramsize - 4, + (u8 *)&zeros, 4); + } + } else { + regdata = brcmf_sdcard_reg_read(bus->sdiodev, + CORE_SB(bus->ci->ramcorebase, sbtmstatelow), 4); + regdata &= (SBTML_RESET | SBTML_REJ_MASK | + (SICF_CLOCK_EN << SBTML_SICF_SHIFT)); + if ((SICF_CLOCK_EN << SBTML_SICF_SHIFT) != regdata) { + brcmf_dbg(ERROR, "SOCRAM core is down after reset?\n"); + bcmerror = -EBADE; + goto fail; + } + + bcmerror = brcmf_sdbrcm_write_vars(bus); + if (bcmerror) { + brcmf_dbg(ERROR, "no vars written to RAM\n"); + bcmerror = 0; + } + + w_sdreg32(bus, 0xFFFFFFFF, + offsetof(struct sdpcmd_regs, intstatus), &retries); + + brcmf_sdbrcm_chip_resetcore(bus->sdiodev, bus->ci->armcorebase); + + /* Allow HT Clock now that the ARM is running. */ + bus->alp_only = false; + + bus->drvr->busstate = BRCMF_BUS_LOAD; + } +fail: + return bcmerror; +} + +static int brcmf_sdbrcm_get_image(char *buf, int len, struct brcmf_bus *bus) +{ + if (bus->firmware->size < bus->fw_ptr + len) + len = bus->firmware->size - bus->fw_ptr; + + memcpy(buf, &bus->firmware->data[bus->fw_ptr], len); + bus->fw_ptr += len; + return len; +} + +MODULE_FIRMWARE(BCM4329_FW_NAME); +MODULE_FIRMWARE(BCM4329_NV_NAME); + static int brcmf_sdbrcm_download_code_file(struct brcmf_bus *bus) { int offset = 0; @@ -4506,347 +3976,388 @@ err: return bcmerror; } - -static int -brcmf_sdbrcm_send_buf(struct brcmf_bus *bus, u32 addr, uint fn, uint flags, - u8 *buf, uint nbytes, struct sk_buff *pkt) +static bool +brcmf_sdbrcm_download_firmware(struct brcmf_bus *bus) { - return brcmf_sdcard_send_buf - (bus->sdiodev, addr, fn, flags, buf, nbytes, pkt); + bool ret; + + /* Download the firmware */ + brcmf_sdbrcm_clkctl(bus, CLK_AVAIL, false); + + ret = _brcmf_sdbrcm_download_firmware(bus) == 0; + + brcmf_sdbrcm_clkctl(bus, CLK_SDONLY, false); + + return ret; } -int brcmf_bus_devreset(struct brcmf_pub *drvr, u8 flag) +void brcmf_sdbrcm_bus_stop(struct brcmf_bus *bus, bool enforce_mutex) { - int bcmerror = 0; - struct brcmf_bus *bus; - - bus = drvr->bus; - - if (flag == true) { - brcmf_sdbrcm_wd_timer(bus, 0); - if (!bus->drvr->dongle_reset) { - /* Expect app to have torn down any - connection before calling */ - /* Stop the bus, disable F2 */ - brcmf_sdbrcm_bus_stop(bus, false); - - /* Clean tx/rx buffer pointers, - detach from the dongle */ - brcmf_sdbrcm_release_dongle(bus); - - bus->drvr->dongle_reset = true; - bus->drvr->up = false; - - brcmf_dbg(TRACE, "WLAN OFF DONE\n"); - /* App can now remove power from device */ - } else - bcmerror = -EIO; - } else { - /* App must have restored power to device before calling */ - - brcmf_dbg(TRACE, " == WLAN ON ==\n"); - - if (bus->drvr->dongle_reset) { - /* Turn on WLAN */ - - /* Attempt to re-attach & download */ - if (brcmf_sdbrcm_probe_attach(bus, SI_ENUM_BASE)) { - /* Attempt to download binary to the dongle */ - if (brcmf_sdbrcm_probe_init(bus)) { - /* Re-init bus, enable F2 transfer */ - brcmf_sdbrcm_bus_init(bus->drvr, false); - - bus->drvr->dongle_reset = false; - bus->drvr->up = true; - - brcmf_dbg(TRACE, "WLAN ON DONE\n"); - } else - bcmerror = -EIO; - } else - bcmerror = -EIO; - } else { - bcmerror = -EISCONN; - brcmf_dbg(ERROR, "Set DEVRESET=false invoked when device is on\n"); - bcmerror = -EIO; - } - brcmf_sdbrcm_wd_timer(bus, brcmf_watchdog_ms); - } - return bcmerror; -} - -static int -brcmf_sdbrcm_chip_recognition(struct brcmf_sdio_dev *sdiodev, - struct chip_info *ci, u32 regs) -{ - u32 regdata; - - /* - * Get CC core rev - * Chipid is assume to be at offset 0 from regs arg - * For different chiptypes or old sdio hosts w/o chipcommon, - * other ways of recognition should be added here. - */ - ci->cccorebase = regs; - regdata = brcmf_sdcard_reg_read(sdiodev, - CORE_CC_REG(ci->cccorebase, chipid), 4); - ci->chip = regdata & CID_ID_MASK; - ci->chiprev = (regdata & CID_REV_MASK) >> CID_REV_SHIFT; - - brcmf_dbg(INFO, "chipid=0x%x chiprev=%d\n", ci->chip, ci->chiprev); - - /* Address of cores for new chips should be added here */ - switch (ci->chip) { - case BCM4329_CHIP_ID: - ci->buscorebase = BCM4329_CORE_BUS_BASE; - ci->ramcorebase = BCM4329_CORE_SOCRAM_BASE; - ci->armcorebase = BCM4329_CORE_ARM_BASE; - ci->ramsize = BCM4329_RAMSIZE; - break; - default: - brcmf_dbg(ERROR, "chipid 0x%x is not supported\n", ci->chip); - return -ENODEV; - } - - regdata = brcmf_sdcard_reg_read(sdiodev, - CORE_SB(ci->cccorebase, sbidhigh), 4); - ci->ccrev = SBCOREREV(regdata); - - regdata = brcmf_sdcard_reg_read(sdiodev, - CORE_CC_REG(ci->cccorebase, pmucapabilities), 4); - ci->pmurev = regdata & PCAP_REV_MASK; - - regdata = brcmf_sdcard_reg_read(sdiodev, - CORE_SB(ci->buscorebase, sbidhigh), 4); - ci->buscorerev = SBCOREREV(regdata); - ci->buscoretype = (regdata & SBIDH_CC_MASK) >> SBIDH_CC_SHIFT; - - brcmf_dbg(INFO, "ccrev=%d, pmurev=%d, buscore rev/type=%d/0x%x\n", - ci->ccrev, ci->pmurev, ci->buscorerev, ci->buscoretype); - - /* get chipcommon capabilites */ - ci->cccaps = brcmf_sdcard_reg_read(sdiodev, - CORE_CC_REG(ci->cccorebase, capabilities), 4); - - return 0; -} - -static void -brcmf_sdbrcm_chip_disablecore(struct brcmf_sdio_dev *sdiodev, u32 corebase) -{ - u32 regdata; - - regdata = brcmf_sdcard_reg_read(sdiodev, - CORE_SB(corebase, sbtmstatelow), 4); - if (regdata & SBTML_RESET) - return; - - regdata = brcmf_sdcard_reg_read(sdiodev, - CORE_SB(corebase, sbtmstatelow), 4); - if ((regdata & (SICF_CLOCK_EN << SBTML_SICF_SHIFT)) != 0) { - /* - * set target reject and spin until busy is clear - * (preserve core-specific bits) - */ - regdata = brcmf_sdcard_reg_read(sdiodev, - CORE_SB(corebase, sbtmstatelow), 4); - brcmf_sdcard_reg_write(sdiodev, CORE_SB(corebase, sbtmstatelow), - 4, regdata | SBTML_REJ); - - regdata = brcmf_sdcard_reg_read(sdiodev, - CORE_SB(corebase, sbtmstatelow), 4); - udelay(1); - SPINWAIT((brcmf_sdcard_reg_read(sdiodev, - CORE_SB(corebase, sbtmstatehigh), 4) & - SBTMH_BUSY), 100000); - - regdata = brcmf_sdcard_reg_read(sdiodev, - CORE_SB(corebase, sbtmstatehigh), 4); - if (regdata & SBTMH_BUSY) - brcmf_dbg(ERROR, "ARM core still busy\n"); - - regdata = brcmf_sdcard_reg_read(sdiodev, - CORE_SB(corebase, sbidlow), 4); - if (regdata & SBIDL_INIT) { - regdata = brcmf_sdcard_reg_read(sdiodev, - CORE_SB(corebase, sbimstate), 4) | - SBIM_RJ; - brcmf_sdcard_reg_write(sdiodev, - CORE_SB(corebase, sbimstate), 4, - regdata); - regdata = brcmf_sdcard_reg_read(sdiodev, - CORE_SB(corebase, sbimstate), 4); - udelay(1); - SPINWAIT((brcmf_sdcard_reg_read(sdiodev, - CORE_SB(corebase, sbimstate), 4) & - SBIM_BY), 100000); - } - - /* set reset and reject while enabling the clocks */ - brcmf_sdcard_reg_write(sdiodev, - CORE_SB(corebase, sbtmstatelow), 4, - (((SICF_FGC | SICF_CLOCK_EN) << SBTML_SICF_SHIFT) | - SBTML_REJ | SBTML_RESET)); - regdata = brcmf_sdcard_reg_read(sdiodev, - CORE_SB(corebase, sbtmstatelow), 4); - udelay(10); - - /* clear the initiator reject bit */ - regdata = brcmf_sdcard_reg_read(sdiodev, - CORE_SB(corebase, sbidlow), 4); - if (regdata & SBIDL_INIT) { - regdata = brcmf_sdcard_reg_read(sdiodev, - CORE_SB(corebase, sbimstate), 4) & - ~SBIM_RJ; - brcmf_sdcard_reg_write(sdiodev, - CORE_SB(corebase, sbimstate), 4, - regdata); - } - } - - /* leave reset and reject asserted */ - brcmf_sdcard_reg_write(sdiodev, CORE_SB(corebase, sbtmstatelow), 4, - (SBTML_REJ | SBTML_RESET)); - udelay(1); -} - -static int -brcmf_sdbrcm_chip_attach(struct brcmf_bus *bus, u32 regs) -{ - struct chip_info *ci; + u32 local_hostintmask; + u8 saveclk; + uint retries; int err; - u8 clkval, clkset; brcmf_dbg(TRACE, "Enter\n"); - /* alloc chip_info_t */ - ci = kzalloc(sizeof(struct chip_info), GFP_ATOMIC); - if (NULL == ci) { - brcmf_dbg(ERROR, "malloc failed!\n"); - return -ENOMEM; + if (enforce_mutex) + brcmf_sdbrcm_sdlock(bus); + + bus_wake(bus); + + /* Enable clock for device interrupts */ + brcmf_sdbrcm_clkctl(bus, CLK_AVAIL, false); + + if (bus->watchdog_tsk) { + send_sig(SIGTERM, bus->watchdog_tsk, 1); + kthread_stop(bus->watchdog_tsk); + bus->watchdog_tsk = NULL; } - /* bus/core/clk setup for register access */ - /* Try forcing SDIO core to do ALPAvail request only */ - clkset = SBSDIO_FORCE_HW_CLKREQ_OFF | SBSDIO_ALP_AVAIL_REQ; - brcmf_sdcard_cfg_write(bus->sdiodev, SDIO_FUNC_1, - SBSDIO_FUNC1_CHIPCLKCSR, clkset, &err); - if (err) { - brcmf_dbg(ERROR, "error writing for HT off\n"); - goto fail; - } + if (bus->dpc_tsk) { + send_sig(SIGTERM, bus->dpc_tsk, 1); + kthread_stop(bus->dpc_tsk); + bus->dpc_tsk = NULL; + } else + tasklet_kill(&bus->tasklet); - /* If register supported, wait for ALPAvail and then force ALP */ - /* This may take up to 15 milliseconds */ - clkval = brcmf_sdcard_cfg_read(bus->sdiodev, SDIO_FUNC_1, - SBSDIO_FUNC1_CHIPCLKCSR, NULL); - if ((clkval & ~SBSDIO_AVBITS) == clkset) { - SPINWAIT(((clkval = - brcmf_sdcard_cfg_read(bus->sdiodev, SDIO_FUNC_1, - SBSDIO_FUNC1_CHIPCLKCSR, - NULL)), - !SBSDIO_ALPAV(clkval)), - PMU_MAX_TRANSITION_DLY); - if (!SBSDIO_ALPAV(clkval)) { - brcmf_dbg(ERROR, "timeout on ALPAV wait, clkval 0x%02x\n", - clkval); - err = -EBUSY; - goto fail; - } - clkset = SBSDIO_FORCE_HW_CLKREQ_OFF | - SBSDIO_FORCE_ALP; + /* Disable and clear interrupts at the chip level also */ + w_sdreg32(bus, 0, offsetof(struct sdpcmd_regs, hostintmask), &retries); + local_hostintmask = bus->hostintmask; + bus->hostintmask = 0; + + /* Change our idea of bus state */ + bus->drvr->busstate = BRCMF_BUS_DOWN; + + /* Force clocks on backplane to be sure F2 interrupt propagates */ + saveclk = brcmf_sdcard_cfg_read(bus->sdiodev, SDIO_FUNC_1, + SBSDIO_FUNC1_CHIPCLKCSR, &err); + if (!err) { brcmf_sdcard_cfg_write(bus->sdiodev, SDIO_FUNC_1, - SBSDIO_FUNC1_CHIPCLKCSR, - clkset, &err); - udelay(65); - } else { - brcmf_dbg(ERROR, "ChipClkCSR access: wrote 0x%02x read 0x%02x\n", - clkset, clkval); - err = -EACCES; - goto fail; + SBSDIO_FUNC1_CHIPCLKCSR, + (saveclk | SBSDIO_FORCE_HT), &err); } - - /* Also, disable the extra SDIO pull-ups */ - brcmf_sdcard_cfg_write(bus->sdiodev, SDIO_FUNC_1, - SBSDIO_FUNC1_SDIOPULLUP, 0, NULL); - - err = brcmf_sdbrcm_chip_recognition(bus->sdiodev, ci, regs); if (err) - goto fail; + brcmf_dbg(ERROR, "Failed to force clock for F2: err %d\n", err); - /* - * Make sure any on-chip ARM is off (in case strapping is wrong), - * or downloaded code was already running. - */ - brcmf_sdbrcm_chip_disablecore(bus->sdiodev, ci->armcorebase); - - brcmf_sdcard_reg_write(bus->sdiodev, - CORE_CC_REG(ci->cccorebase, gpiopullup), 4, 0); - brcmf_sdcard_reg_write(bus->sdiodev, - CORE_CC_REG(ci->cccorebase, gpiopulldown), 4, 0); - - /* Disable F2 to clear any intermediate frame state on the dongle */ + /* Turn off the bus (F2), free any pending packets */ + brcmf_dbg(INTR, "disable SDIO interrupts\n"); brcmf_sdcard_cfg_write(bus->sdiodev, SDIO_FUNC_0, SDIO_CCCR_IOEx, - SDIO_FUNC_ENABLE_1, NULL); + SDIO_FUNC_ENABLE_1, NULL); - /* WAR: cmd52 backplane read so core HW will drop ALPReq */ - clkval = brcmf_sdcard_cfg_read(bus->sdiodev, SDIO_FUNC_1, - 0, NULL); + /* Clear any pending interrupts now that F2 is disabled */ + w_sdreg32(bus, local_hostintmask, + offsetof(struct sdpcmd_regs, intstatus), &retries); - /* Done with backplane-dependent accesses, can drop clock... */ - brcmf_sdcard_cfg_write(bus->sdiodev, SDIO_FUNC_1, - SBSDIO_FUNC1_CHIPCLKCSR, 0, NULL); + /* Turn off the backplane clock (only) */ + brcmf_sdbrcm_clkctl(bus, CLK_SDONLY, false); - bus->ci = ci; - return 0; -fail: - bus->ci = NULL; - kfree(ci); - return err; + /* Clear the data packet queues */ + brcmu_pktq_flush(&bus->txq, true, NULL, NULL); + + /* Clear any held glomming stuff */ + if (bus->glomd) + brcmu_pkt_buf_free_skb(bus->glomd); + + if (bus->glom) + brcmu_pkt_buf_free_skb(bus->glom); + + bus->glom = bus->glomd = NULL; + + /* Clear rx control and wake any waiters */ + bus->rxlen = 0; + brcmf_sdbrcm_ioctl_resp_wake(bus); + + /* Reset some F2 state stuff */ + bus->rxskip = false; + bus->tx_seq = bus->rx_seq = 0; + + if (enforce_mutex) + brcmf_sdbrcm_sdunlock(bus); } -static void -brcmf_sdbrcm_chip_resetcore(struct brcmf_sdio_dev *sdiodev, u32 corebase) +int brcmf_sdbrcm_bus_init(struct brcmf_pub *drvr, bool enforce_mutex) { - u32 regdata; + struct brcmf_bus *bus = drvr->bus; + unsigned long timeout; + uint retries = 0; + u8 ready, enable; + int err, ret = 0; + u8 saveclk; - /* - * Must do the disable sequence first to work for - * arbitrary current core state. - */ - brcmf_sdbrcm_chip_disablecore(sdiodev, corebase); + brcmf_dbg(TRACE, "Enter\n"); - /* - * Now do the initialization sequence. - * set reset while enabling the clock and - * forcing them on throughout the core - */ - brcmf_sdcard_reg_write(sdiodev, CORE_SB(corebase, sbtmstatelow), 4, - ((SICF_FGC | SICF_CLOCK_EN) << SBTML_SICF_SHIFT) | - SBTML_RESET); - udelay(1); + /* try to download image and nvram to the dongle */ + if (drvr->busstate == BRCMF_BUS_DOWN) { + if (!(brcmf_sdbrcm_download_firmware(bus))) + return -1; + } - regdata = brcmf_sdcard_reg_read(sdiodev, - CORE_SB(corebase, sbtmstatehigh), 4); - if (regdata & SBTMH_SERR) - brcmf_sdcard_reg_write(sdiodev, - CORE_SB(corebase, sbtmstatehigh), 4, 0); + if (!bus->drvr) + return 0; - regdata = brcmf_sdcard_reg_read(sdiodev, - CORE_SB(corebase, sbimstate), 4); - if (regdata & (SBIM_IBE | SBIM_TO)) - brcmf_sdcard_reg_write(sdiodev, CORE_SB(corebase, sbimstate), 4, - regdata & ~(SBIM_IBE | SBIM_TO)); + /* Start the watchdog timer */ + bus->drvr->tickcnt = 0; + brcmf_sdbrcm_wd_timer(bus, brcmf_watchdog_ms); - /* clear reset and allow it to propagate throughout the core */ - brcmf_sdcard_reg_write(sdiodev, CORE_SB(corebase, sbtmstatelow), 4, - (SICF_FGC << SBTML_SICF_SHIFT) | - (SICF_CLOCK_EN << SBTML_SICF_SHIFT)); - udelay(1); + if (enforce_mutex) + brcmf_sdbrcm_sdlock(bus); - /* leave clock enabled */ - brcmf_sdcard_reg_write(sdiodev, CORE_SB(corebase, sbtmstatelow), 4, - (SICF_CLOCK_EN << SBTML_SICF_SHIFT)); - udelay(1); + /* Make sure backplane clock is on, needed to generate F2 interrupt */ + brcmf_sdbrcm_clkctl(bus, CLK_AVAIL, false); + if (bus->clkstate != CLK_AVAIL) + goto exit; + + /* Force clocks on backplane to be sure F2 interrupt propagates */ + saveclk = + brcmf_sdcard_cfg_read(bus->sdiodev, SDIO_FUNC_1, + SBSDIO_FUNC1_CHIPCLKCSR, &err); + if (!err) { + brcmf_sdcard_cfg_write(bus->sdiodev, SDIO_FUNC_1, + SBSDIO_FUNC1_CHIPCLKCSR, + (saveclk | SBSDIO_FORCE_HT), &err); + } + if (err) { + brcmf_dbg(ERROR, "Failed to force clock for F2: err %d\n", err); + goto exit; + } + + /* Enable function 2 (frame transfers) */ + w_sdreg32(bus, SDPCM_PROT_VERSION << SMB_DATA_VERSION_SHIFT, + offsetof(struct sdpcmd_regs, tosbmailboxdata), &retries); + enable = (SDIO_FUNC_ENABLE_1 | SDIO_FUNC_ENABLE_2); + + brcmf_sdcard_cfg_write(bus->sdiodev, SDIO_FUNC_0, SDIO_CCCR_IOEx, + enable, NULL); + + timeout = jiffies + msecs_to_jiffies(BRCMF_WAIT_F2RDY); + ready = 0; + while (enable != ready) { + ready = brcmf_sdcard_cfg_read(bus->sdiodev, SDIO_FUNC_0, + SDIO_CCCR_IORx, NULL); + if (time_after(jiffies, timeout)) + break; + else if (time_after(jiffies, timeout - BRCMF_WAIT_F2RDY + 50)) + /* prevent busy waiting if it takes too long */ + msleep_interruptible(20); + } + + brcmf_dbg(INFO, "enable 0x%02x, ready 0x%02x\n", enable, ready); + + /* If F2 successfully enabled, set core and enable interrupts */ + if (ready == enable) { + /* Set up the interrupt mask and enable interrupts */ + bus->hostintmask = HOSTINTMASK; + w_sdreg32(bus, bus->hostintmask, + offsetof(struct sdpcmd_regs, hostintmask), &retries); + + brcmf_sdcard_cfg_write(bus->sdiodev, SDIO_FUNC_1, + SBSDIO_WATERMARK, 8, &err); + + /* Set bus state according to enable result */ + drvr->busstate = BRCMF_BUS_DATA; + } + + else { + /* Disable F2 again */ + enable = SDIO_FUNC_ENABLE_1; + brcmf_sdcard_cfg_write(bus->sdiodev, SDIO_FUNC_0, + SDIO_CCCR_IOEx, enable, NULL); + } + + /* Restore previous clock setting */ + brcmf_sdcard_cfg_write(bus->sdiodev, SDIO_FUNC_1, + SBSDIO_FUNC1_CHIPCLKCSR, saveclk, &err); + + /* If we didn't come up, turn off backplane clock */ + if (drvr->busstate != BRCMF_BUS_DATA) + brcmf_sdbrcm_clkctl(bus, CLK_NONE, false); + +exit: + if (enforce_mutex) + brcmf_sdbrcm_sdunlock(bus); + + return ret; +} + +void brcmf_sdbrcm_isr(void *arg) +{ + struct brcmf_bus *bus = (struct brcmf_bus *) arg; + + brcmf_dbg(TRACE, "Enter\n"); + + if (!bus) { + brcmf_dbg(ERROR, "bus is null pointer, exiting\n"); + return; + } + + if (bus->drvr->busstate == BRCMF_BUS_DOWN) { + brcmf_dbg(ERROR, "bus is down. we have nothing to do\n"); + return; + } + /* Count the interrupt call */ + bus->intrcount++; + bus->ipend = true; + + /* Shouldn't get this interrupt if we're sleeping? */ + if (bus->sleeping) { + brcmf_dbg(ERROR, "INTERRUPT WHILE SLEEPING??\n"); + return; + } + + /* Disable additional interrupts (is this needed now)? */ + if (!bus->intr) + brcmf_dbg(ERROR, "isr w/o interrupt configured!\n"); + + bus->dpc_sched = true; + brcmf_sdbrcm_sched_dpc(bus); +} + +static bool brcmf_sdbrcm_bus_watchdog(struct brcmf_pub *drvr) +{ + struct brcmf_bus *bus; + + brcmf_dbg(TIMER, "Enter\n"); + + bus = drvr->bus; + + if (bus->drvr->dongle_reset) + return false; + + /* Ignore the timer if simulating bus down */ + if (bus->sleeping) + return false; + + brcmf_sdbrcm_sdlock(bus); + + /* Poll period: check device if appropriate. */ + if (bus->poll && (++bus->polltick >= bus->pollrate)) { + u32 intstatus = 0; + + /* Reset poll tick */ + bus->polltick = 0; + + /* Check device if no interrupts */ + if (!bus->intr || (bus->intrcount == bus->lastintrs)) { + + if (!bus->dpc_sched) { + u8 devpend; + devpend = brcmf_sdcard_cfg_read(bus->sdiodev, + SDIO_FUNC_0, SDIO_CCCR_INTx, + NULL); + intstatus = + devpend & (INTR_STATUS_FUNC1 | + INTR_STATUS_FUNC2); + } + + /* If there is something, make like the ISR and + schedule the DPC */ + if (intstatus) { + bus->pollcnt++; + bus->ipend = true; + + bus->dpc_sched = true; + brcmf_sdbrcm_sched_dpc(bus); + + } + } + + /* Update interrupt tracking */ + bus->lastintrs = bus->intrcount; + } +#ifdef BCMDBG + /* Poll for console output periodically */ + if (drvr->busstate == BRCMF_BUS_DATA && brcmf_console_ms != 0) { + bus->console.count += brcmf_watchdog_ms; + if (bus->console.count >= brcmf_console_ms) { + bus->console.count -= brcmf_console_ms; + /* Make sure backplane clock is on */ + brcmf_sdbrcm_clkctl(bus, CLK_AVAIL, false); + if (brcmf_sdbrcm_readconsole(bus) < 0) + brcmf_console_ms = 0; /* On error, + stop trying */ + } + } +#endif /* BCMDBG */ + + /* On idle timeout clear activity flag and/or turn off clock */ + if ((bus->idletime > 0) && (bus->clkstate == CLK_AVAIL)) { + if (++bus->idlecount >= bus->idletime) { + bus->idlecount = 0; + if (bus->activity) { + bus->activity = false; + brcmf_sdbrcm_wd_timer(bus, brcmf_watchdog_ms); + } else { + brcmf_sdbrcm_clkctl(bus, CLK_NONE, false); + } + } + } + + brcmf_sdbrcm_sdunlock(bus); + + return bus->ipend; +} + +static bool brcmf_sdbrcm_chipmatch(u16 chipid) +{ + if (chipid == BCM4329_CHIP_ID) + return true; + return false; +} + +static void brcmf_sdbrcm_release_malloc(struct brcmf_bus *bus) +{ + brcmf_dbg(TRACE, "Enter\n"); + + if (bus->drvr && bus->drvr->dongle_reset) + return; + + kfree(bus->rxbuf); + bus->rxctl = bus->rxbuf = NULL; + bus->rxlen = 0; + + kfree(bus->databuf); + bus->databuf = NULL; +} + +static bool brcmf_sdbrcm_probe_malloc(struct brcmf_bus *bus) +{ + brcmf_dbg(TRACE, "Enter\n"); + + if (bus->drvr->maxctl) { + bus->rxblen = + roundup((bus->drvr->maxctl + SDPCM_HDRLEN), + ALIGNMENT) + BRCMF_SDALIGN; + bus->rxbuf = kmalloc(bus->rxblen, GFP_ATOMIC); + if (!(bus->rxbuf)) { + brcmf_dbg(ERROR, "kmalloc of %d-byte rxbuf failed\n", + bus->rxblen); + goto fail; + } + } + + /* Allocate buffer to receive glomed packet */ + bus->databuf = kmalloc(MAX_DATA_BUF, GFP_ATOMIC); + if (!(bus->databuf)) { + brcmf_dbg(ERROR, "kmalloc of %d-byte databuf failed\n", + MAX_DATA_BUF); + /* release rxbuf which was already located as above */ + if (!bus->rxblen) + kfree(bus->rxbuf); + goto fail; + } + + /* Align the buffer */ + if ((unsigned long)bus->databuf % BRCMF_SDALIGN) + bus->dataptr = bus->databuf + (BRCMF_SDALIGN - + ((unsigned long)bus->databuf % BRCMF_SDALIGN)); + else + bus->dataptr = bus->databuf; + + return true; + +fail: + return false; } /* SDIO Pad drive strength to select value mappings */ @@ -4954,31 +4465,278 @@ static void brcmf_sdbrcm_sdiod_drive_strength_init(struct brcmf_bus *bus, } } -static void -brcmf_sdbrcm_chip_detach(struct brcmf_bus *bus) +static int +brcmf_sdbrcm_chip_recognition(struct brcmf_sdio_dev *sdiodev, + struct chip_info *ci, u32 regs) +{ + u32 regdata; + + /* + * Get CC core rev + * Chipid is assume to be at offset 0 from regs arg + * For different chiptypes or old sdio hosts w/o chipcommon, + * other ways of recognition should be added here. + */ + ci->cccorebase = regs; + regdata = brcmf_sdcard_reg_read(sdiodev, + CORE_CC_REG(ci->cccorebase, chipid), 4); + ci->chip = regdata & CID_ID_MASK; + ci->chiprev = (regdata & CID_REV_MASK) >> CID_REV_SHIFT; + + brcmf_dbg(INFO, "chipid=0x%x chiprev=%d\n", ci->chip, ci->chiprev); + + /* Address of cores for new chips should be added here */ + switch (ci->chip) { + case BCM4329_CHIP_ID: + ci->buscorebase = BCM4329_CORE_BUS_BASE; + ci->ramcorebase = BCM4329_CORE_SOCRAM_BASE; + ci->armcorebase = BCM4329_CORE_ARM_BASE; + ci->ramsize = BCM4329_RAMSIZE; + break; + default: + brcmf_dbg(ERROR, "chipid 0x%x is not supported\n", ci->chip); + return -ENODEV; + } + + regdata = brcmf_sdcard_reg_read(sdiodev, + CORE_SB(ci->cccorebase, sbidhigh), 4); + ci->ccrev = SBCOREREV(regdata); + + regdata = brcmf_sdcard_reg_read(sdiodev, + CORE_CC_REG(ci->cccorebase, pmucapabilities), 4); + ci->pmurev = regdata & PCAP_REV_MASK; + + regdata = brcmf_sdcard_reg_read(sdiodev, + CORE_SB(ci->buscorebase, sbidhigh), 4); + ci->buscorerev = SBCOREREV(regdata); + ci->buscoretype = (regdata & SBIDH_CC_MASK) >> SBIDH_CC_SHIFT; + + brcmf_dbg(INFO, "ccrev=%d, pmurev=%d, buscore rev/type=%d/0x%x\n", + ci->ccrev, ci->pmurev, ci->buscorerev, ci->buscoretype); + + /* get chipcommon capabilites */ + ci->cccaps = brcmf_sdcard_reg_read(sdiodev, + CORE_CC_REG(ci->cccorebase, capabilities), 4); + + return 0; +} + +static int +brcmf_sdbrcm_chip_attach(struct brcmf_bus *bus, u32 regs) +{ + struct chip_info *ci; + int err; + u8 clkval, clkset; + + brcmf_dbg(TRACE, "Enter\n"); + + /* alloc chip_info_t */ + ci = kzalloc(sizeof(struct chip_info), GFP_ATOMIC); + if (NULL == ci) { + brcmf_dbg(ERROR, "malloc failed!\n"); + return -ENOMEM; + } + + /* bus/core/clk setup for register access */ + /* Try forcing SDIO core to do ALPAvail request only */ + clkset = SBSDIO_FORCE_HW_CLKREQ_OFF | SBSDIO_ALP_AVAIL_REQ; + brcmf_sdcard_cfg_write(bus->sdiodev, SDIO_FUNC_1, + SBSDIO_FUNC1_CHIPCLKCSR, clkset, &err); + if (err) { + brcmf_dbg(ERROR, "error writing for HT off\n"); + goto fail; + } + + /* If register supported, wait for ALPAvail and then force ALP */ + /* This may take up to 15 milliseconds */ + clkval = brcmf_sdcard_cfg_read(bus->sdiodev, SDIO_FUNC_1, + SBSDIO_FUNC1_CHIPCLKCSR, NULL); + if ((clkval & ~SBSDIO_AVBITS) == clkset) { + SPINWAIT(((clkval = + brcmf_sdcard_cfg_read(bus->sdiodev, SDIO_FUNC_1, + SBSDIO_FUNC1_CHIPCLKCSR, + NULL)), + !SBSDIO_ALPAV(clkval)), + PMU_MAX_TRANSITION_DLY); + if (!SBSDIO_ALPAV(clkval)) { + brcmf_dbg(ERROR, "timeout on ALPAV wait, clkval 0x%02x\n", + clkval); + err = -EBUSY; + goto fail; + } + clkset = SBSDIO_FORCE_HW_CLKREQ_OFF | + SBSDIO_FORCE_ALP; + brcmf_sdcard_cfg_write(bus->sdiodev, SDIO_FUNC_1, + SBSDIO_FUNC1_CHIPCLKCSR, + clkset, &err); + udelay(65); + } else { + brcmf_dbg(ERROR, "ChipClkCSR access: wrote 0x%02x read 0x%02x\n", + clkset, clkval); + err = -EACCES; + goto fail; + } + + /* Also, disable the extra SDIO pull-ups */ + brcmf_sdcard_cfg_write(bus->sdiodev, SDIO_FUNC_1, + SBSDIO_FUNC1_SDIOPULLUP, 0, NULL); + + err = brcmf_sdbrcm_chip_recognition(bus->sdiodev, ci, regs); + if (err) + goto fail; + + /* + * Make sure any on-chip ARM is off (in case strapping is wrong), + * or downloaded code was already running. + */ + brcmf_sdbrcm_chip_disablecore(bus->sdiodev, ci->armcorebase); + + brcmf_sdcard_reg_write(bus->sdiodev, + CORE_CC_REG(ci->cccorebase, gpiopullup), 4, 0); + brcmf_sdcard_reg_write(bus->sdiodev, + CORE_CC_REG(ci->cccorebase, gpiopulldown), 4, 0); + + /* Disable F2 to clear any intermediate frame state on the dongle */ + brcmf_sdcard_cfg_write(bus->sdiodev, SDIO_FUNC_0, SDIO_CCCR_IOEx, + SDIO_FUNC_ENABLE_1, NULL); + + /* WAR: cmd52 backplane read so core HW will drop ALPReq */ + clkval = brcmf_sdcard_cfg_read(bus->sdiodev, SDIO_FUNC_1, + 0, NULL); + + /* Done with backplane-dependent accesses, can drop clock... */ + brcmf_sdcard_cfg_write(bus->sdiodev, SDIO_FUNC_1, + SBSDIO_FUNC1_CHIPCLKCSR, 0, NULL); + + bus->ci = ci; + return 0; +fail: + bus->ci = NULL; + kfree(ci); + return err; +} + +static bool +brcmf_sdbrcm_probe_attach(struct brcmf_bus *bus, u32 regsva) +{ + u8 clkctl = 0; + int err = 0; + int reg_addr; + u32 reg_val; + + bus->alp_only = true; + + /* Return the window to backplane enumeration space for core access */ + if (brcmf_sdcard_set_sbaddr_window(bus->sdiodev, SI_ENUM_BASE)) + brcmf_dbg(ERROR, "FAILED to return to SI_ENUM_BASE\n"); + +#ifdef BCMDBG + printk(KERN_DEBUG "F1 signature read @0x18000000=0x%4x\n", + brcmf_sdcard_reg_read(bus->sdiodev, SI_ENUM_BASE, 4)); + +#endif /* BCMDBG */ + + /* + * Force PLL off until brcmf_sdbrcm_chip_attach() + * programs PLL control regs + */ + + brcmf_sdcard_cfg_write(bus->sdiodev, SDIO_FUNC_1, + SBSDIO_FUNC1_CHIPCLKCSR, + BRCMF_INIT_CLKCTL1, &err); + if (!err) + clkctl = + brcmf_sdcard_cfg_read(bus->sdiodev, SDIO_FUNC_1, + SBSDIO_FUNC1_CHIPCLKCSR, &err); + + if (err || ((clkctl & ~SBSDIO_AVBITS) != BRCMF_INIT_CLKCTL1)) { + brcmf_dbg(ERROR, "ChipClkCSR access: err %d wrote 0x%02x read 0x%02x\n", + err, BRCMF_INIT_CLKCTL1, clkctl); + goto fail; + } + + if (brcmf_sdbrcm_chip_attach(bus, regsva)) { + brcmf_dbg(ERROR, "brcmf_sdbrcm_chip_attach failed!\n"); + goto fail; + } + + if (!brcmf_sdbrcm_chipmatch((u16) bus->ci->chip)) { + brcmf_dbg(ERROR, "unsupported chip: 0x%04x\n", bus->ci->chip); + goto fail; + } + + brcmf_sdbrcm_sdiod_drive_strength_init(bus, brcmf_sdiod_drive_strength); + + /* Get info on the ARM and SOCRAM cores... */ + brcmf_sdcard_reg_read(bus->sdiodev, + CORE_SB(bus->ci->armcorebase, sbidhigh), 4); + bus->orig_ramsize = bus->ci->ramsize; + if (!(bus->orig_ramsize)) { + brcmf_dbg(ERROR, "failed to find SOCRAM memory!\n"); + goto fail; + } + bus->ramsize = bus->orig_ramsize; + if (brcmf_dongle_memsize) + brcmf_sdbrcm_setmemsize(bus, brcmf_dongle_memsize); + + brcmf_dbg(ERROR, "DHD: dongle ram size is set to %d(orig %d)\n", + bus->ramsize, bus->orig_ramsize); + + /* Set core control so an SDIO reset does a backplane reset */ + reg_addr = bus->ci->buscorebase + + offsetof(struct sdpcmd_regs, corecontrol); + reg_val = brcmf_sdcard_reg_read(bus->sdiodev, reg_addr, sizeof(u32)); + brcmf_sdcard_reg_write(bus->sdiodev, reg_addr, sizeof(u32), + reg_val | CC_BPRESEN); + + brcmu_pktq_init(&bus->txq, (PRIOMASK + 1), TXQLEN); + + /* Locate an appropriately-aligned portion of hdrbuf */ + bus->rxhdr = (u8 *) roundup((unsigned long)&bus->hdrbuf[0], + BRCMF_SDALIGN); + + /* Set the poll and/or interrupt flags */ + bus->intr = (bool) brcmf_intr; + bus->poll = (bool) brcmf_poll; + if (bus->poll) + bus->pollrate = 1; + + return true; + +fail: + return false; +} + +static bool brcmf_sdbrcm_probe_init(struct brcmf_bus *bus) { brcmf_dbg(TRACE, "Enter\n"); - kfree(bus->ci); - bus->ci = NULL; -} + /* Disable F2 to clear any intermediate frame state on the dongle */ + brcmf_sdcard_cfg_write(bus->sdiodev, SDIO_FUNC_0, SDIO_CCCR_IOEx, + SDIO_FUNC_ENABLE_1, NULL); -static void -brcmf_sdbrcm_wait_for_event(struct brcmf_bus *bus, bool *lockvar) -{ - brcmf_sdbrcm_sdunlock(bus); - wait_event_interruptible_timeout(bus->ctrl_wait, - (*lockvar == false), HZ * 2); - brcmf_sdbrcm_sdlock(bus); - return; -} + bus->drvr->busstate = BRCMF_BUS_DOWN; + bus->sleeping = false; + bus->rxflow = false; -static void -brcmf_sdbrcm_wait_event_wakeup(struct brcmf_bus *bus) -{ - if (waitqueue_active(&bus->ctrl_wait)) - wake_up_interruptible(&bus->ctrl_wait); - return; + /* Done with backplane-dependent accesses, can drop clock... */ + brcmf_sdcard_cfg_write(bus->sdiodev, SDIO_FUNC_1, + SBSDIO_FUNC1_CHIPCLKCSR, 0, NULL); + + /* ...and initialize clock/power states */ + bus->clkstate = CLK_SDONLY; + bus->idletime = (s32) brcmf_idletime; + bus->idleclock = BRCMF_IDLE_ACTIVE; + + /* Query the F2 block size, set roundup accordingly */ + bus->blocksize = bus->sdiodev->func[2]->cur_blksize; + bus->roundup = min(max_roundup, bus->blocksize); + + /* bus module does not support packet chaining */ + bus->use_rxchain = false; + bus->sd_rxchain = false; + + return true; } static int @@ -5034,6 +4792,309 @@ brcmf_sdbrcm_watchdog(unsigned long data) mod_timer(&bus->timer, jiffies + brcmf_watchdog_ms * HZ / 1000); } +static void +brcmf_sdbrcm_chip_detach(struct brcmf_bus *bus) +{ + brcmf_dbg(TRACE, "Enter\n"); + + kfree(bus->ci); + bus->ci = NULL; +} + +static void brcmf_sdbrcm_release_dongle(struct brcmf_bus *bus) +{ + brcmf_dbg(TRACE, "Enter\n"); + + if (bus->drvr && bus->drvr->dongle_reset) + return; + + if (bus->ci) { + brcmf_sdbrcm_clkctl(bus, CLK_AVAIL, false); + brcmf_sdbrcm_clkctl(bus, CLK_NONE, false); + brcmf_sdbrcm_chip_detach(bus); + if (bus->vars && bus->varsz) + kfree(bus->vars); + bus->vars = NULL; + } + + brcmf_dbg(TRACE, "Disconnected\n"); +} + +/* Detach and free everything */ +static void brcmf_sdbrcm_release(struct brcmf_bus *bus) +{ + brcmf_dbg(TRACE, "Enter\n"); + + if (bus) { + /* De-register interrupt handler */ + brcmf_sdcard_intr_dereg(bus->sdiodev); + + if (bus->drvr) { + brcmf_detach(bus->drvr); + brcmf_sdbrcm_release_dongle(bus); + bus->drvr = NULL; + } + + brcmf_sdbrcm_release_malloc(bus); + + kfree(bus); + } + + brcmf_dbg(TRACE, "Disconnected\n"); +} + +void *brcmf_sdbrcm_probe(u16 bus_no, u16 slot, u16 func, uint bustype, + u32 regsva, struct brcmf_sdio_dev *sdiodev) +{ + int ret; + struct brcmf_bus *bus; + + /* Init global variables at run-time, not as part of the declaration. + * This is required to support init/de-init of the driver. + * Initialization + * of globals as part of the declaration results in non-deterministic + * behavior since the value of the globals may be different on the + * first time that the driver is initialized vs subsequent + * initializations. + */ + brcmf_txbound = BRCMF_TXBOUND; + brcmf_rxbound = BRCMF_RXBOUND; + brcmf_alignctl = true; + brcmf_readahead = true; + retrydata = false; + brcmf_dongle_memsize = 0; + brcmf_txminmax = BRCMF_TXMINMAX; + + forcealign = true; + + brcmf_c_init(); + + brcmf_dbg(TRACE, "Enter\n"); + + /* We make an assumption about address window mappings: + * regsva == SI_ENUM_BASE*/ + + /* Allocate private bus interface state */ + bus = kzalloc(sizeof(struct brcmf_bus), GFP_ATOMIC); + if (!bus) { + brcmf_dbg(ERROR, "kmalloc of struct dhd_bus failed\n"); + goto fail; + } + bus->sdiodev = sdiodev; + sdiodev->bus = bus; + bus->tx_seq = SDPCM_SEQUENCE_WRAP - 1; + bus->usebufpool = false; /* Use bufpool if allocated, + else use locally malloced rxbuf */ + + /* attempt to attach to the dongle */ + if (!(brcmf_sdbrcm_probe_attach(bus, regsva))) { + brcmf_dbg(ERROR, "brcmf_sdbrcm_probe_attach failed\n"); + goto fail; + } + + spin_lock_init(&bus->txqlock); + init_waitqueue_head(&bus->ctrl_wait); + init_waitqueue_head(&bus->ioctl_resp_wait); + + /* Set up the watchdog timer */ + init_timer(&bus->timer); + bus->timer.data = (unsigned long)bus; + bus->timer.function = brcmf_sdbrcm_watchdog; + + /* Initialize thread based operation and lock */ + if ((brcmf_watchdog_prio >= 0) && (brcmf_dpc_prio >= 0)) { + bus->threads_only = true; + sema_init(&bus->sdsem, 1); + } else { + bus->threads_only = false; + spin_lock_init(&bus->sdlock); + } + + if (brcmf_dpc_prio >= 0) { + /* Initialize watchdog thread */ + init_completion(&bus->watchdog_wait); + bus->watchdog_tsk = kthread_run(brcmf_sdbrcm_watchdog_thread, + bus, "brcmf_watchdog"); + if (IS_ERR(bus->watchdog_tsk)) { + printk(KERN_WARNING + "brcmf_watchdog thread failed to start\n"); + bus->watchdog_tsk = NULL; + } + } else + bus->watchdog_tsk = NULL; + + /* Set up the bottom half handler */ + if (brcmf_dpc_prio >= 0) { + /* Initialize DPC thread */ + init_completion(&bus->dpc_wait); + bus->dpc_tsk = kthread_run(brcmf_sdbrcm_dpc_thread, + bus, "brcmf_dpc"); + if (IS_ERR(bus->dpc_tsk)) { + printk(KERN_WARNING + "brcmf_dpc thread failed to start\n"); + bus->dpc_tsk = NULL; + } + } else { + tasklet_init(&bus->tasklet, brcmf_sdbrcm_dpc_tasklet, + (unsigned long)bus); + bus->dpc_tsk = NULL; + } + + /* Attach to the brcmf/OS/network interface */ + bus->drvr = brcmf_attach(bus, SDPCM_RESERVE); + if (!bus->drvr) { + brcmf_dbg(ERROR, "brcmf_attach failed\n"); + goto fail; + } + + /* Allocate buffers */ + if (!(brcmf_sdbrcm_probe_malloc(bus))) { + brcmf_dbg(ERROR, "brcmf_sdbrcm_probe_malloc failed\n"); + goto fail; + } + + if (!(brcmf_sdbrcm_probe_init(bus))) { + brcmf_dbg(ERROR, "brcmf_sdbrcm_probe_init failed\n"); + goto fail; + } + + /* Register interrupt callback, but mask it (not operational yet). */ + brcmf_dbg(INTR, "disable SDIO interrupts (not interested yet)\n"); + ret = brcmf_sdcard_intr_reg(bus->sdiodev); + if (ret != 0) { + brcmf_dbg(ERROR, "FAILED: sdcard_intr_reg returned %d\n", ret); + goto fail; + } + brcmf_dbg(INTR, "registered SDIO interrupt function ok\n"); + + brcmf_dbg(INFO, "completed!!\n"); + + /* if firmware path present try to download and bring up bus */ + ret = brcmf_bus_start(bus->drvr); + if (ret != 0) { + if (ret == -ENOLINK) { + brcmf_dbg(ERROR, "dongle is not responding\n"); + goto fail; + } + } + /* Ok, have the per-port tell the stack we're open for business */ + if (brcmf_net_attach(bus->drvr, 0) != 0) { + brcmf_dbg(ERROR, "Net attach failed!!\n"); + goto fail; + } + + return bus; + +fail: + brcmf_sdbrcm_release(bus); + return NULL; +} + +void brcmf_sdbrcm_disconnect(void *ptr) +{ + struct brcmf_bus *bus = (struct brcmf_bus *)ptr; + + brcmf_dbg(TRACE, "Enter\n"); + + if (bus) + brcmf_sdbrcm_release(bus); + + brcmf_dbg(TRACE, "Disconnected\n"); +} + +int brcmf_bus_register(void) +{ + brcmf_dbg(TRACE, "Enter\n"); + + /* Sanity check on the module parameters */ + do { + /* Both watchdog and DPC as tasklets are ok */ + if ((brcmf_watchdog_prio < 0) && (brcmf_dpc_prio < 0)) + break; + + /* If both watchdog and DPC are threads, TX must be deferred */ + if ((brcmf_watchdog_prio >= 0) && (brcmf_dpc_prio >= 0) + && brcmf_deferred_tx) + break; + + brcmf_dbg(ERROR, "Invalid module parameters.\n"); + return -EINVAL; + } while (0); + + return brcmf_sdio_register(); +} + +void brcmf_bus_unregister(void) +{ + brcmf_dbg(TRACE, "Enter\n"); + + brcmf_sdio_unregister(); +} + +struct device *brcmf_bus_get_device(struct brcmf_bus *bus) +{ + return &bus->sdiodev->func[2]->dev; +} + +int brcmf_bus_devreset(struct brcmf_pub *drvr, u8 flag) +{ + int bcmerror = 0; + struct brcmf_bus *bus; + + bus = drvr->bus; + + if (flag == true) { + brcmf_sdbrcm_wd_timer(bus, 0); + if (!bus->drvr->dongle_reset) { + /* Expect app to have torn down any + connection before calling */ + /* Stop the bus, disable F2 */ + brcmf_sdbrcm_bus_stop(bus, false); + + /* Clean tx/rx buffer pointers, + detach from the dongle */ + brcmf_sdbrcm_release_dongle(bus); + + bus->drvr->dongle_reset = true; + bus->drvr->up = false; + + brcmf_dbg(TRACE, "WLAN OFF DONE\n"); + /* App can now remove power from device */ + } else + bcmerror = -EIO; + } else { + /* App must have restored power to device before calling */ + + brcmf_dbg(TRACE, " == WLAN ON ==\n"); + + if (bus->drvr->dongle_reset) { + /* Turn on WLAN */ + + /* Attempt to re-attach & download */ + if (brcmf_sdbrcm_probe_attach(bus, SI_ENUM_BASE)) { + /* Attempt to download binary to the dongle */ + if (brcmf_sdbrcm_probe_init(bus)) { + /* Re-init bus, enable F2 transfer */ + brcmf_sdbrcm_bus_init(bus->drvr, false); + + bus->drvr->dongle_reset = false; + bus->drvr->up = true; + + brcmf_dbg(TRACE, "WLAN ON DONE\n"); + } else + bcmerror = -EIO; + } else + bcmerror = -EIO; + } else { + bcmerror = -EISCONN; + brcmf_dbg(ERROR, "Set DEVRESET=false invoked when device is on\n"); + bcmerror = -EIO; + } + brcmf_sdbrcm_wd_timer(bus, brcmf_watchdog_ms); + } + return bcmerror; +} + void brcmf_sdbrcm_wd_timer(struct brcmf_bus *bus, uint wdtick) { @@ -5074,118 +5135,3 @@ brcmf_sdbrcm_wd_timer(struct brcmf_bus *bus, uint wdtick) bus->save_ms = wdtick; } } - -static int brcmf_sdbrcm_dpc_thread(void *data) -{ - struct brcmf_bus *bus = (struct brcmf_bus *) data; - - /* This thread doesn't need any user-level access, - * so get rid of all our resources - */ - if (brcmf_dpc_prio > 0) { - struct sched_param param; - param.sched_priority = (brcmf_dpc_prio < MAX_RT_PRIO) ? - brcmf_dpc_prio : (MAX_RT_PRIO - 1); - sched_setscheduler(current, SCHED_FIFO, ¶m); - } - - allow_signal(SIGTERM); - /* Run until signal received */ - while (1) { - if (kthread_should_stop()) - break; - if (!wait_for_completion_interruptible(&bus->dpc_wait)) { - /* Call bus dpc unless it indicated down - (then clean stop) */ - if (bus->drvr->busstate != BRCMF_BUS_DOWN) { - if (brcmf_sdbrcm_dpc(bus)) - complete(&bus->dpc_wait); - } else { - brcmf_sdbrcm_bus_stop(bus, true); - } - } else - break; - } - return 0; -} - -static void brcmf_sdbrcm_dpc_tasklet(unsigned long data) -{ - struct brcmf_bus *bus = (struct brcmf_bus *) data; - - /* Call bus dpc unless it indicated down (then clean stop) */ - if (bus->drvr->busstate != BRCMF_BUS_DOWN) { - if (brcmf_sdbrcm_dpc(bus)) - tasklet_schedule(&bus->tasklet); - } else - brcmf_sdbrcm_bus_stop(bus, true); -} - -static void brcmf_sdbrcm_sched_dpc(struct brcmf_bus *bus) -{ - if (bus->dpc_tsk) { - complete(&bus->dpc_wait); - return; - } - - tasklet_schedule(&bus->tasklet); -} - -static void brcmf_sdbrcm_sdlock(struct brcmf_bus *bus) -{ - if (bus->threads_only) - down(&bus->sdsem); - else - spin_lock_bh(&bus->sdlock); -} - -static void brcmf_sdbrcm_sdunlock(struct brcmf_bus *bus) -{ - if (bus->threads_only) - up(&bus->sdsem); - else - spin_unlock_bh(&bus->sdlock); -} - -static int brcmf_sdbrcm_get_image(char *buf, int len, struct brcmf_bus *bus) -{ - if (bus->firmware->size < bus->fw_ptr + len) - len = bus->firmware->size - bus->fw_ptr; - - memcpy(buf, &bus->firmware->data[bus->fw_ptr], len); - bus->fw_ptr += len; - return len; -} - -MODULE_FIRMWARE(BCM4329_FW_NAME); -MODULE_FIRMWARE(BCM4329_NV_NAME); - -static int brcmf_sdbrcm_ioctl_resp_wait(struct brcmf_bus *bus, uint *condition, - bool *pending) -{ - DECLARE_WAITQUEUE(wait, current); - int timeout = msecs_to_jiffies(brcmf_ioctl_timeout_msec); - - /* Wait until control frame is available */ - add_wait_queue(&bus->ioctl_resp_wait, &wait); - set_current_state(TASK_INTERRUPTIBLE); - - while (!(*condition) && (!signal_pending(current) && timeout)) - timeout = schedule_timeout(timeout); - - if (signal_pending(current)) - *pending = true; - - set_current_state(TASK_RUNNING); - remove_wait_queue(&bus->ioctl_resp_wait, &wait); - - return timeout; -} - -static int brcmf_sdbrcm_ioctl_resp_wake(struct brcmf_bus *bus) -{ - if (waitqueue_active(&bus->ioctl_resp_wait)) - wake_up_interruptible(&bus->ioctl_resp_wait); - - return 0; -}