#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.
*/
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)
{
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;
+ u32 intstatus = 0;
+ u32 hmb_data;
+ u8 fcbits;
uint retries = 0;
- struct sk_buff *new;
- int i;
brcmf_dbg(TRACE, "Enter\n");
- if (bus->drvr->dongle_reset) {
- ret = -EPERM;
- goto done;
- }
+ /* Read mailbox data and ack that we did so */
+ r_sdreg32(bus, &hmb_data,
+ offsetof(struct sdpcmd_regs, tohostmailboxdata), &retries);
- frame = (u8 *) (pkt->data);
+ if (retries <= retry_limit)
+ w_sdreg32(bus, SMB_INT_ACK,
+ offsetof(struct sdpcmd_regs, tosbmailbox), &retries);
+ bus->f1regdata += 2;
- /* 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;
- }
+ /* 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");
- 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);
- }
+ bus->rxskip = false;
+ intstatus |= I_HMB_FRAME_IND;
}
- /* 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);
+ /*
+ * 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);
+ else
+ brcmf_dbg(INFO, "Dongle ready, protocol version %d\n",
+ bus->sdpcm_ver);
+ }
- /* 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);
+ /*
+ * 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;
- put_unaligned_le32(swheader, frame + SDPCM_FRAMETAG_LEN);
- put_unaligned_le32(0, frame + SDPCM_FRAMETAG_LEN + sizeof(swheader));
+ if (fcbits & ~bus->flowcontrol)
+ bus->fc_xoff++;
-#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
+ if (bus->flowcontrol & ~fcbits)
+ bus->fc_xon++;
- /* 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);
+ bus->fc_rcvd++;
+ bus->flowcontrol = fcbits;
}
- /* Some controllers have trouble with odd bytes -- round to even */
- if (forcealign && (len & (ALIGNMENT - 1)))
- len = roundup(len, ALIGNMENT);
+ /* 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);
- do {
- ret = brcmf_sdbrcm_send_buf(bus, bus->sdiodev->sbwad,
- SDIO_FUNC_2, F2SYNC, frame,
- len, pkt);
- bus->f2txdata++;
+ return intstatus;
+}
- 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++;
+static void brcmf_sdbrcm_rxfail(struct brcmf_bus *bus, bool abort, bool rtx)
+{
+ uint retries = 0;
+ u16 lastrbc;
+ u8 hi, lo;
+ int err;
- 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++;
+ brcmf_dbg(ERROR, "%sterminate frame%s\n",
+ abort ? "abort command, " : "",
+ rtx ? ", send NAK" : "");
- 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 (abort)
+ brcmf_sdcard_abort(bus->sdiodev, SDIO_FUNC_2);
- }
- if (ret == 0)
- bus->tx_seq = (bus->tx_seq + 1) % SDPCM_SEQUENCE_WRAP;
+ brcmf_sdcard_cfg_write(bus->sdiodev, SDIO_FUNC_1,
+ SBSDIO_FUNC1_FRAMECTRL,
+ SFC_RF_TERM, &err);
+ bus->f1regdata++;
- } while ((ret < 0) && retrydata && retries++ < TXRETRIES);
+ /* Wait until the packet has been flushed (device/FIFO stable) */
+ for (lastrbc = retries = 0xffff; retries > 0; retries--) {
+ hi = brcmf_sdcard_cfg_read(bus->sdiodev, SDIO_FUNC_1,
+ SBSDIO_FUNC1_RFRAMEBCHI, NULL);
+ lo = brcmf_sdcard_cfg_read(bus->sdiodev, SDIO_FUNC_1,
+ SBSDIO_FUNC1_RFRAMEBCLO, NULL);
+ bus->f1regdata += 2;
-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 ((hi == 0) && (lo == 0))
+ break;
- if (free_pkt)
- brcmu_pkt_buf_free_skb(pkt);
+ if ((hi > (lastrbc >> 8)) && (lo > (lastrbc & 0x00ff))) {
+ brcmf_dbg(ERROR, "count growing: last 0x%04x now 0x%04x\n",
+ lastrbc, (hi << 8) + lo);
+ }
+ lastrbc = (hi << 8) + lo;
+ }
- return ret;
-}
+ if (!retries)
+ brcmf_dbg(ERROR, "count never zeroed: last 0x%04x\n", lastrbc);
+ else
+ brcmf_dbg(INFO, "flush took %d iterations\n", 0xffff - retries);
-int brcmf_sdbrcm_bus_txdata(struct brcmf_bus *bus, struct sk_buff *pkt)
-{
- int ret = -EBADE;
- uint datalen, prec;
+ if (rtx) {
+ bus->rxrtx++;
+ w_sdreg32(bus, SMB_NAK,
+ offsetof(struct sdpcmd_regs, tosbmailbox), &retries);
- brcmf_dbg(TRACE, "Enter\n");
-
- datalen = pkt->len;
+ bus->f1regdata++;
+ if (retries <= retry_limit)
+ bus->rxskip = true;
+ }
- /* Add space for the header */
- skb_push(pkt, SDPCM_HDRLEN);
- /* precondition: IS_ALIGNED((unsigned long)(pkt->data), 2) */
+ /* Clear partial in any case */
+ bus->nextlen = 0;
- prec = prio2prec((pkt->priority & PRIOMASK));
+ /* If we can't reach the device, signal failure */
+ if (err || brcmf_sdcard_regfail(bus->sdiodev))
+ bus->drvr->busstate = BRCMF_BUS_DOWN;
+}
- /* 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++;
+static u8 brcmf_sdbrcm_rxglom(struct brcmf_bus *bus, u8 rxseq)
+{
+ u16 dlen, totlen;
+ u8 *dptr, num = 0;
- /* 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);
+ u16 sublen, check;
+ struct sk_buff *pfirst, *plast, *pnext, *save_pfirst;
- if (pktq_len(&bus->txq) >= TXHI)
- brcmf_txflowcontrol(bus->drvr, 0, ON);
+ int errcode;
+ u8 chan, seq, doff, sfdoff;
+ u8 txmax;
-#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);
+ int ifidx = 0;
+ bool usechain = bus->use_rxchain;
- /* 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);
+ /* If packets, issue read(s) and send up packet chain */
+ /* Return sequence numbers consumed? */
- 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;
+ brcmf_dbg(TRACE, "start: glomd %p glom %p\n", bus->glomd, bus->glom);
- if (bus->idletime == BRCMF_IDLE_IMMEDIATE &&
- !bus->dpc_sched) {
- bus->activity = false;
- brcmf_sdbrcm_clkctl(bus, CLK_NONE, true);
+ /* If there's a descriptor, generate the packet chain */
+ if (bus->glomd) {
+ pfirst = plast = pnext = NULL;
+ dlen = (u16) (bus->glomd->len);
+ dptr = bus->glomd->data;
+ if (!dlen || (dlen & 1)) {
+ brcmf_dbg(ERROR, "bad glomd len(%d), ignore descriptor\n",
+ dlen);
+ dlen = 0;
}
- brcmf_sdbrcm_sdunlock(bus);
- }
+ for (totlen = num = 0; dlen; num++) {
+ /* Get (and move past) next length */
+ sublen = get_unaligned_le16(dptr);
+ dlen -= sizeof(u16);
+ dptr += sizeof(u16);
+ if ((sublen < SDPCM_HDRLEN) ||
+ ((num == 0) && (sublen < (2 * SDPCM_HDRLEN)))) {
+ brcmf_dbg(ERROR, "descriptor len %d bad: %d\n",
+ num, sublen);
+ pnext = NULL;
+ break;
+ }
+ if (sublen % BRCMF_SDALIGN) {
+ brcmf_dbg(ERROR, "sublen %d not multiple of %d\n",
+ sublen, BRCMF_SDALIGN);
+ usechain = false;
+ }
+ totlen += sublen;
- return ret;
-}
+ /* For last frame, adjust read len so total
+ is a block multiple */
+ if (!dlen) {
+ sublen +=
+ (roundup(totlen, bus->blocksize) - totlen);
+ totlen = roundup(totlen, bus->blocksize);
+ }
-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;
+ /* Allocate/chain packet for next subframe */
+ pnext = brcmu_pkt_buf_get_skb(sublen + BRCMF_SDALIGN);
+ if (pnext == NULL) {
+ brcmf_dbg(ERROR, "bcm_pkt_buf_get_skb failed, num %d len %d\n",
+ num, sublen);
+ break;
+ }
+ if (!pfirst) {
+ pfirst = plast = pnext;
+ } else {
+ plast->next = pnext;
+ plast = pnext;
+ }
- struct brcmf_pub *drvr = bus->drvr;
+ /* Adhere to start alignment requirements */
+ pkt_align(pnext, sublen, BRCMF_SDALIGN);
+ }
- brcmf_dbg(TRACE, "Enter\n");
+ /* If all allocations succeeded, save packet chain
+ in bus structure */
+ if (pnext) {
+ brcmf_dbg(GLOM, "allocated %d-byte packet chain for %d subframes\n",
+ totlen, num);
+ if (BRCMF_GLOM_ON() && bus->nextlen) {
+ if (totlen != bus->nextlen) {
+ brcmf_dbg(GLOM, "glomdesc mismatch: nextlen %d glomdesc %d rxseq %d\n",
+ bus->nextlen, totlen, rxseq);
+ }
+ }
+ bus->glom = pfirst;
+ pfirst = pnext = NULL;
+ } else {
+ if (pfirst)
+ brcmu_pkt_buf_free_skb(pfirst);
+ bus->glom = NULL;
+ num = 0;
+ }
- tx_prec_map = ~bus->flowcontrol;
+ /* Done with descriptor packet */
+ brcmu_pkt_buf_free_skb(bus->glomd);
+ bus->glomd = NULL;
+ bus->nextlen = 0;
+ }
- /* 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;
+ /* Ok -- either we just generated a packet chain,
+ or had one from before */
+ if (bus->glom) {
+ if (BRCMF_GLOM_ON()) {
+ brcmf_dbg(GLOM, "try superframe read, packet chain:\n");
+ for (pnext = bus->glom; pnext; pnext = pnext->next) {
+ brcmf_dbg(GLOM, " %p: %p len 0x%04x (%d)\n",
+ pnext, (u8 *) (pnext->data),
+ pnext->len, pnext->len);
+ }
}
- 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
- bus->drvr->dstats.tx_bytes += datalen;
+ pfirst = bus->glom;
+ dlen = (u16) brcmu_pkttotlen(pfirst);
- /* 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;
+ /* Do an SDIO read for the superframe. Configurable iovar to
+ * read directly into the chained packet, or allocate a large
+ * packet and and copy into the chain.
+ */
+ if (usechain) {
+ errcode = brcmf_sdcard_recv_buf(bus->sdiodev,
+ bus->sdiodev->sbwad,
+ SDIO_FUNC_2,
+ F2SYNC, (u8 *) pfirst->data, dlen,
+ pfirst);
+ } else if (bus->dataptr) {
+ errcode = brcmf_sdcard_recv_buf(bus->sdiodev,
+ bus->sdiodev->sbwad,
+ SDIO_FUNC_2,
+ F2SYNC, bus->dataptr, dlen,
+ NULL);
+ sublen = (u16) brcmu_pktfrombuf(pfirst, 0, dlen,
+ bus->dataptr);
+ if (sublen != dlen) {
+ brcmf_dbg(ERROR, "FAILED TO COPY, dlen %d sublen %d\n",
+ dlen, sublen);
+ errcode = -1;
+ }
+ pnext = NULL;
+ } else {
+ brcmf_dbg(ERROR, "COULDN'T ALLOC %d-BYTE GLOM, FORCE FAILURE\n",
+ dlen);
+ errcode = -1;
}
- }
-
- /* 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);
+ bus->f2rxdata++;
- return cnt;
-}
+ /* On failure, kill the superframe, allow a couple retries */
+ if (errcode < 0) {
+ brcmf_dbg(ERROR, "glom read of %d bytes failed: %d\n",
+ dlen, errcode);
+ bus->drvr->rx_errors++;
-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->glomerr++ < 3) {
+ brcmf_sdbrcm_rxfail(bus, true, true);
+ } else {
+ bus->glomerr = 0;
+ brcmf_sdbrcm_rxfail(bus, true, false);
+ brcmu_pkt_buf_free_skb(bus->glom);
+ bus->rxglomfail++;
+ bus->glom = NULL;
+ }
+ return 0;
+ }
+#ifdef BCMDBG
+ if (BRCMF_GLOM_ON()) {
+ printk(KERN_DEBUG "SUPERFRAME:\n");
+ print_hex_dump_bytes("", DUMP_PREFIX_OFFSET,
+ pfirst->data, min_t(int, pfirst->len, 48));
+ }
+#endif
- if (bus->drvr->dongle_reset)
- return -EIO;
+ /* Validate the superframe header */
+ dptr = (u8 *) (pfirst->data);
+ sublen = get_unaligned_le16(dptr);
+ check = get_unaligned_le16(dptr + sizeof(u16));
- /* Back the pointer to make a room for bus header */
- frame = msg - SDPCM_HDRLEN;
- len = (msglen += SDPCM_HDRLEN);
+ chan = SDPCM_PACKET_CHANNEL(&dptr[SDPCM_FRAMETAG_LEN]);
+ seq = SDPCM_PACKET_SEQUENCE(&dptr[SDPCM_FRAMETAG_LEN]);
+ bus->nextlen = dptr[SDPCM_FRAMETAG_LEN + SDPCM_NEXTLEN_OFFSET];
+ if ((bus->nextlen << 4) > MAX_RX_DATASZ) {
+ brcmf_dbg(INFO, "nextlen too large (%d) seq %d\n",
+ bus->nextlen, seq);
+ bus->nextlen = 0;
+ }
+ doff = SDPCM_DOFFSET_VALUE(&dptr[SDPCM_FRAMETAG_LEN]);
+ txmax = SDPCM_WINDOW_VALUE(&dptr[SDPCM_FRAMETAG_LEN]);
- /* 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);
+ errcode = 0;
+ if ((u16)~(sublen ^ check)) {
+ brcmf_dbg(ERROR, "(superframe): HW hdr error: len/check 0x%04x/0x%04x\n",
+ sublen, check);
+ errcode = -1;
+ } else if (roundup(sublen, bus->blocksize) != dlen) {
+ brcmf_dbg(ERROR, "(superframe): len 0x%04x, rounded 0x%04x, expect 0x%04x\n",
+ sublen, roundup(sublen, bus->blocksize),
+ dlen);
+ errcode = -1;
+ } else if (SDPCM_PACKET_CHANNEL(&dptr[SDPCM_FRAMETAG_LEN]) !=
+ SDPCM_GLOM_CHANNEL) {
+ brcmf_dbg(ERROR, "(superframe): bad channel %d\n",
+ SDPCM_PACKET_CHANNEL(
+ &dptr[SDPCM_FRAMETAG_LEN]));
+ errcode = -1;
+ } else if (SDPCM_GLOMDESC(&dptr[SDPCM_FRAMETAG_LEN])) {
+ brcmf_dbg(ERROR, "(superframe): got 2nd descriptor?\n");
+ errcode = -1;
+ } else if ((doff < SDPCM_HDRLEN) ||
+ (doff > (pfirst->len - SDPCM_HDRLEN))) {
+ brcmf_dbg(ERROR, "(superframe): Bad data offset %d: HW %d pkt %d min %d\n",
+ doff, sublen, pfirst->len, SDPCM_HDRLEN);
+ errcode = -1;
}
- /* 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);
- }
+ /* Check sequence number of superframe SW header */
+ if (rxseq != seq) {
+ brcmf_dbg(INFO, "(superframe) rx_seq %d, expected %d\n",
+ seq, rxseq);
+ bus->rx_badseq++;
+ rxseq = seq;
+ }
- /* Satisfy length-alignment requirements */
- if (forcealign && (len & (ALIGNMENT - 1)))
- len = roundup(len, ALIGNMENT);
+ /* Check window for sanity */
+ if ((u8) (txmax - bus->tx_seq) > 0x40) {
+ brcmf_dbg(ERROR, "unlikely tx max %d with tx_seq %d\n",
+ txmax, bus->tx_seq);
+ txmax = bus->tx_seq + 2;
+ }
+ bus->tx_max = txmax;
- /* precondition: IS_ALIGNED((unsigned long)frame, 2) */
+ /* Remove superframe header, remember offset */
+ skb_pull(pfirst, doff);
+ sfdoff = doff;
- /* Need to lock here to protect txseq and SDIO tx calls */
- brcmf_sdbrcm_sdlock(bus);
+ /* Validate all the subframe headers */
+ for (num = 0, pnext = pfirst; pnext && !errcode;
+ num++, pnext = pnext->next) {
+ dptr = (u8 *) (pnext->data);
+ dlen = (u16) (pnext->len);
+ sublen = get_unaligned_le16(dptr);
+ check = get_unaligned_le16(dptr + sizeof(u16));
+ chan = SDPCM_PACKET_CHANNEL(&dptr[SDPCM_FRAMETAG_LEN]);
+ doff = SDPCM_DOFFSET_VALUE(&dptr[SDPCM_FRAMETAG_LEN]);
+#ifdef BCMDBG
+ if (BRCMF_GLOM_ON()) {
+ printk(KERN_DEBUG "subframe:\n");
+ print_hex_dump_bytes("", DUMP_PREFIX_OFFSET,
+ dptr, 32);
+ }
+#endif
- bus_wake(bus);
+ if ((u16)~(sublen ^ check)) {
+ brcmf_dbg(ERROR, "(subframe %d): HW hdr error: len/check 0x%04x/0x%04x\n",
+ num, sublen, check);
+ errcode = -1;
+ } else if ((sublen > dlen) || (sublen < SDPCM_HDRLEN)) {
+ brcmf_dbg(ERROR, "(subframe %d): length mismatch: len 0x%04x, expect 0x%04x\n",
+ num, sublen, dlen);
+ errcode = -1;
+ } else if ((chan != SDPCM_DATA_CHANNEL) &&
+ (chan != SDPCM_EVENT_CHANNEL)) {
+ brcmf_dbg(ERROR, "(subframe %d): bad channel %d\n",
+ num, chan);
+ errcode = -1;
+ } else if ((doff < SDPCM_HDRLEN) || (doff > sublen)) {
+ brcmf_dbg(ERROR, "(subframe %d): Bad data offset %d: HW %d min %d\n",
+ num, doff, sublen, SDPCM_HDRLEN);
+ errcode = -1;
+ }
+ }
- /* Make sure backplane clock is on */
- brcmf_sdbrcm_clkctl(bus, CLK_AVAIL, false);
+ if (errcode) {
+ /* Terminate frame on error, request
+ a couple retries */
+ if (bus->glomerr++ < 3) {
+ /* Restore superframe header space */
+ skb_push(pfirst, sfdoff);
+ brcmf_sdbrcm_rxfail(bus, true, true);
+ } else {
+ bus->glomerr = 0;
+ brcmf_sdbrcm_rxfail(bus, true, false);
+ brcmu_pkt_buf_free_skb(bus->glom);
+ bus->rxglomfail++;
+ bus->glom = NULL;
+ }
+ bus->nextlen = 0;
+ return 0;
+ }
- /* 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);
+ /* Basic SD framing looks ok - process each packet (header) */
+ save_pfirst = pfirst;
+ bus->glom = NULL;
+ plast = NULL;
- /* 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));
+ for (num = 0; pfirst; rxseq++, pfirst = pnext) {
+ pnext = pfirst->next;
+ pfirst->next = NULL;
- 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;
+ dptr = (u8 *) (pfirst->data);
+ sublen = get_unaligned_le16(dptr);
+ chan = SDPCM_PACKET_CHANNEL(&dptr[SDPCM_FRAMETAG_LEN]);
+ seq = SDPCM_PACKET_SEQUENCE(&dptr[SDPCM_FRAMETAG_LEN]);
+ doff = SDPCM_DOFFSET_VALUE(&dptr[SDPCM_FRAMETAG_LEN]);
- brcmf_sdbrcm_wait_for_event(bus, &bus->ctrl_frame_stat);
+ brcmf_dbg(GLOM, "Get subframe %d, %p(%p/%d), sublen %d chan %d seq %d\n",
+ num, pfirst, pfirst->data,
+ pfirst->len, sublen, chan, seq);
- 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;
- }
- }
+ /* precondition: chan == SDPCM_DATA_CHANNEL ||
+ chan == SDPCM_EVENT_CHANNEL */
- if (ret == -1) {
+ if (rxseq != seq) {
+ brcmf_dbg(GLOM, "rx_seq %d, expected %d\n",
+ seq, rxseq);
+ bus->rx_badseq++;
+ rxseq = seq;
+ }
#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));
- }
+ if (BRCMF_BYTES_ON() && BRCMF_DATA_ON()) {
+ printk(KERN_DEBUG "Rx Subframe Data:\n");
+ print_hex_dump_bytes("", DUMP_PREFIX_OFFSET,
+ dptr, dlen);
+ }
#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);
+ __skb_trim(pfirst, sublen);
+ skb_pull(pfirst, doff);
- brcmf_sdcard_cfg_write(bus->sdiodev,
- SDIO_FUNC_1,
- SBSDIO_FUNC1_FRAMECTRL,
- SFC_WF_TERM, NULL);
- bus->f1regdata++;
+ if (pfirst->len == 0) {
+ brcmu_pkt_buf_free_skb(pfirst);
+ if (plast)
+ plast->next = pnext;
+ else
+ save_pfirst = pnext;
- 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;
- }
+ continue;
+ } else if (brcmf_proto_hdrpull(bus->drvr, &ifidx,
+ pfirst) != 0) {
+ brcmf_dbg(ERROR, "rx protocol error\n");
+ bus->drvr->rx_errors++;
+ brcmu_pkt_buf_free_skb(pfirst);
+ if (plast)
+ plast->next = pnext;
+ else
+ save_pfirst = pnext;
+ continue;
}
- 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);
+ /* this packet will go up, link back into
+ chain and count it */
+ pfirst->next = pnext;
+ plast = pfirst;
+ num++;
- if (ret)
- bus->drvr->tx_ctlerrs++;
- else
- bus->drvr->tx_ctlpkts++;
+#ifdef BCMDBG
+ if (BRCMF_GLOM_ON()) {
+ brcmf_dbg(GLOM, "subframe %d to stack, %p (%p/%d) nxt/lnk %p/%p\n",
+ num, pfirst, pfirst->data,
+ pfirst->len, pfirst->next,
+ pfirst->prev);
+ print_hex_dump_bytes("", DUMP_PREFIX_OFFSET,
+ pfirst->data,
+ min_t(int, pfirst->len, 32));
+ }
+#endif /* BCMDBG */
+ }
+ if (num) {
+ brcmf_sdbrcm_sdunlock(bus);
+ brcmf_rx_frame(bus->drvr, ifidx, save_pfirst, num);
+ brcmf_sdbrcm_sdlock(bus);
+ }
- return ret ? -EIO : 0;
+ bus->rxglomframes++;
+ bus->rxglompkts += num;
+ }
+ return num;
}
-int
-brcmf_sdbrcm_bus_rxctl(struct brcmf_bus *bus, unsigned char *msg, uint msglen)
+static int brcmf_sdbrcm_ioctl_resp_wait(struct brcmf_bus *bus, uint *condition,
+ bool *pending)
{
- int timeleft;
- uint rxlen = 0;
- bool pending;
-
- brcmf_dbg(TRACE, "Enter\n");
-
- if (bus->drvr->dongle_reset)
- return -EIO;
+ DECLARE_WAITQUEUE(wait, current);
+ int timeout = msecs_to_jiffies(brcmf_ioctl_timeout_msec);
/* Wait until control frame is available */
- timeleft = brcmf_sdbrcm_ioctl_resp_wait(bus, &bus->rxlen, &pending);
+ add_wait_queue(&bus->ioctl_resp_wait, &wait);
+ set_current_state(TASK_INTERRUPTIBLE);
- brcmf_sdbrcm_sdlock(bus);
- rxlen = bus->rxlen;
- memcpy(msg, bus->rxctl, min(msglen, rxlen));
- bus->rxlen = 0;
- brcmf_sdbrcm_sdunlock(bus);
+ while (!(*condition) && (!signal_pending(current) && timeout))
+ timeout = schedule_timeout(timeout);
- 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 (signal_pending(current))
+ *pending = true;
- if (rxlen)
- bus->drvr->rx_ctlpkts++;
- else
- bus->drvr->rx_ctlerrs++;
+ set_current_state(TASK_RUNNING);
+ remove_wait_queue(&bus->ioctl_resp_wait, &wait);
- return rxlen ? (int)rxlen : -ETIMEDOUT;
+ return timeout;
}
-static int
-brcmf_sdbrcm_membytes(struct brcmf_bus *bus, bool write, u32 address, u8 *data,
- uint size)
+static int brcmf_sdbrcm_ioctl_resp_wake(struct brcmf_bus *bus)
{
- int bcmerror = 0;
- u32 sdaddr;
- uint dsize;
+ if (waitqueue_active(&bus->ioctl_resp_wait))
+ wake_up_interruptible(&bus->ioctl_resp_wait);
- /* 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;
+ return 0;
+}
+static void
+brcmf_sdbrcm_read_control(struct brcmf_bus *bus, u8 *hdr, uint len, uint doff)
+{
+ uint rdlen, pad;
- /* 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;
+ 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;
}
- /* 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;
- }
+ /* Copy the already-read portion over */
+ memcpy(bus->rxctl, hdr, firstread);
+ if (len <= firstread)
+ goto gotpkt;
- /* 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);
- }
+ /* 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);
}
-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);
+ /* Satisfy length-alignment requirements */
+ if (forcealign && (rdlen & (ALIGNMENT - 1)))
+ rdlen = roundup(rdlen, ALIGNMENT);
- return bcmerror;
-}
+ /* 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;
+ }
-#ifdef BCMDBG
-static int
-brcmf_sdbrcm_readshared(struct brcmf_bus *bus, struct sdpcm_shared *sh)
-{
- u32 addr;
- int rv;
+ 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 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;
+ /* 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++;
- addr = le32_to_cpu(addr);
+ /* 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;
+ }
- brcmf_dbg(INFO, "sdpcm_shared address 0x%08X\n", addr);
+gotpkt:
- /*
- * 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;
+#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
- /* 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;
- }
+ /* Point to valid data and indicate its length */
+ bus->rxctl += doff;
+ bus->rxlen = len - doff;
- return 0;
+done:
+ /* Awake any waiters */
+ brcmf_sdbrcm_ioctl_resp_wake(bus);
}
-static int brcmf_sdbrcm_checkdied(struct brcmf_bus *bus, u8 *data, uint size)
+/* Return true if there may be more frames to read */
+static uint
+brcmf_sdbrcm_readframes(struct brcmf_bus *bus, uint maxframes, bool *finished)
{
- 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");
+ u16 len, check; /* Extracted hardware header fields */
+ u8 chan, seq, doff; /* Extracted software header fields */
+ u8 fcbits; /* Extracted fcbits from software header */
- 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;
- }
- }
+ struct sk_buff *pkt; /* Packet for event or data frames */
+ u16 pad; /* Number of pad bytes to read */
+ u16 rdlen; /* Total number of bytes to read */
+ u8 rxseq; /* Next sequence number to expect */
+ uint rxleft = 0; /* Remaining number of frames allowed */
+ int sdret; /* Return code from calls */
+ u8 txmax; /* Maximum tx sequence offered */
+ bool len_consistent; /* Result of comparing readahead len and
+ len from hw-hdr */
+ u8 *rxbuf;
+ int ifidx = 0;
+ uint rxcount = 0; /* Total frames read */
- str = kmalloc(maxstrlen, GFP_ATOMIC);
- if (str == NULL) {
- brcmf_dbg(ERROR, "kmalloc(%d) failed\n", maxstrlen);
- bcmerror = -ENOMEM;
- goto done;
- }
+ brcmf_dbg(TRACE, "Enter\n");
- bcmerror = brcmf_sdbrcm_readshared(bus, &sdpcm_shared);
- if (bcmerror < 0)
- goto done;
+ /* Not finished unless we encounter no more frames indication */
+ *finished = false;
- brcmu_binit(&strbuf, data, size);
+ for (rxseq = bus->rx_seq, rxleft = maxframes;
+ !bus->rxskip && rxleft && bus->drvr->busstate != BRCMF_BUS_DOWN;
+ rxseq++, rxleft--) {
- brcmu_bprintf(&strbuf,
- "msgtrace address : 0x%08X\nconsole address : 0x%08X\n",
- sdpcm_shared.msgtrace_addr, sdpcm_shared.console_addr);
+ /* Handle glomming separately */
+ if (bus->glom || bus->glomd) {
+ u8 cnt;
+ brcmf_dbg(GLOM, "calling rxglom: glomd %p, glom %p\n",
+ bus->glomd, bus->glom);
+ cnt = brcmf_sdbrcm_rxglom(bus, rxseq);
+ brcmf_dbg(GLOM, "rxglom returned %d\n", cnt);
+ rxseq += cnt - 1;
+ rxleft = (rxleft > cnt) ? (rxleft - cnt) : 1;
+ continue;
+ }
- 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");
+ /* Try doing single read if we can */
+ if (brcmf_readahead && bus->nextlen) {
+ u16 nextlen = bus->nextlen;
+ bus->nextlen = 0;
- 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;
+ rdlen = len = nextlen << 4;
- str[maxstrlen - 1] = '\0';
- brcmu_bprintf(&strbuf, " expr \"%s\"", str);
+ /* Pad read to blocksize for efficiency */
+ if (bus->roundup && bus->blocksize
+ && (rdlen > bus->blocksize)) {
+ pad =
+ bus->blocksize -
+ (rdlen % bus->blocksize);
+ if ((pad <= bus->roundup)
+ && (pad < bus->blocksize)
+ && ((rdlen + pad + firstread) <
+ MAX_RX_DATASZ))
+ rdlen += pad;
+ } else if (rdlen % BRCMF_SDALIGN) {
+ rdlen += BRCMF_SDALIGN -
+ (rdlen % BRCMF_SDALIGN);
}
- 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;
+ /* We use bus->rxctl buffer in WinXP for initial
+ * control pkt receives.
+ * Later we use buffer-poll for data as well
+ * as control packets.
+ * This is required because dhd receives full
+ * frame in gSPI unlike SDIO.
+ * After the frame is received we have to
+ * distinguish whether it is data
+ * or non-data frame.
+ */
+ /* Allocate a packet buffer */
+ pkt = brcmu_pkt_buf_get_skb(rdlen + BRCMF_SDALIGN);
+ if (!pkt) {
+ /* Give up on data, request rtx of events */
+ brcmf_dbg(ERROR, "(nextlen): brcmu_pkt_buf_get_skb failed: len %d rdlen %d expected rxseq %d\n",
+ len, rdlen, rxseq);
+ continue;
+ } else {
+ pkt_align(pkt, rdlen, BRCMF_SDALIGN);
+ rxbuf = (u8 *) (pkt->data);
+ /* Read the entire frame */
+ sdret = brcmf_sdcard_recv_buf(bus->sdiodev,
+ bus->sdiodev->sbwad,
+ SDIO_FUNC_2, F2SYNC,
+ rxbuf, rdlen,
+ pkt);
+ bus->f2rxdata++;
- str[maxstrlen - 1] = '\0';
- brcmu_bprintf(&strbuf, " file \"%s\"", str);
+ if (sdret < 0) {
+ brcmf_dbg(ERROR, "(nextlen): read %d bytes failed: %d\n",
+ rdlen, sdret);
+ brcmu_pkt_buf_free_skb(pkt);
+ bus->drvr->rx_errors++;
+ /* Force retry w/normal header read.
+ * Don't attempt NAK for
+ * gSPI
+ */
+ brcmf_sdbrcm_rxfail(bus, true, true);
+ continue;
+ }
}
- 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);
- }
- }
+ /* Now check the header */
+ memcpy(bus->rxhdr, rxbuf, SDPCM_HDRLEN);
- if (sdpcm_shared.flags & (SDPCM_SHARED_ASSERT | SDPCM_SHARED_TRAP))
- brcmf_dbg(ERROR, "%s\n", strbuf.origbuf);
+ /* Extract hardware header fields */
+ len = get_unaligned_le16(bus->rxhdr);
+ check = get_unaligned_le16(bus->rxhdr + sizeof(u16));
-#ifdef BCMDBG
- if (sdpcm_shared.flags & SDPCM_SHARED_TRAP)
- /* Mem dump to a file on device */
- brcmf_sdbrcm_mem_dump(bus);
+ /* All zeros means readahead info was bad */
+ if (!(len | check)) {
+ brcmf_dbg(INFO, "(nextlen): read zeros in HW header???\n");
+ brcmf_sdbrcm_pktfree2(bus, pkt);
+ continue;
+ }
-#endif /* BCMDBG */
+ /* Validate check bytes */
+ if ((u16)~(len ^ check)) {
+ brcmf_dbg(ERROR, "(nextlen): HW hdr error: nextlen/len/check 0x%04x/0x%04x/0x%04x\n",
+ nextlen, len, check);
+ bus->rx_badhdr++;
+ brcmf_sdbrcm_rxfail(bus, false, false);
+ brcmf_sdbrcm_pktfree2(bus, pkt);
+ continue;
+ }
-done:
- kfree(mbuffer);
- kfree(str);
+ /* Validate frame length */
+ if (len < SDPCM_HDRLEN) {
+ brcmf_dbg(ERROR, "(nextlen): HW hdr length invalid: %d\n",
+ len);
+ brcmf_sdbrcm_pktfree2(bus, pkt);
+ continue;
+ }
- return bcmerror;
-}
+ /* Check for consistency withreadahead info */
+ len_consistent = (nextlen != (roundup(len, 16) >> 4));
+ if (len_consistent) {
+ /* Mismatch, force retry w/normal
+ header (may be >4K) */
+ brcmf_dbg(ERROR, "(nextlen): mismatch, nextlen %d len %d rnd %d; expected rxseq %d\n",
+ nextlen, len, roundup(len, 16),
+ rxseq);
+ brcmf_sdbrcm_rxfail(bus, true, true);
+ brcmf_sdbrcm_pktfree2(bus, pkt);
+ continue;
+ }
-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;
+ /* Extract software header fields */
+ chan = SDPCM_PACKET_CHANNEL(
+ &bus->rxhdr[SDPCM_FRAMETAG_LEN]);
+ seq = SDPCM_PACKET_SEQUENCE(
+ &bus->rxhdr[SDPCM_FRAMETAG_LEN]);
+ doff = SDPCM_DOFFSET_VALUE(
+ &bus->rxhdr[SDPCM_FRAMETAG_LEN]);
+ txmax = SDPCM_WINDOW_VALUE(
+ &bus->rxhdr[SDPCM_FRAMETAG_LEN]);
- /* 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;
- }
+ bus->nextlen =
+ bus->rxhdr[SDPCM_FRAMETAG_LEN +
+ SDPCM_NEXTLEN_OFFSET];
+ if ((bus->nextlen << 4) > MAX_RX_DATASZ) {
+ brcmf_dbg(INFO, "(nextlen): got frame w/nextlen too large (%d), seq %d\n",
+ bus->nextlen, seq);
+ bus->nextlen = 0;
+ }
- /* 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(".");
+ bus->drvr->rx_readahead_cnt++;
- /* Decrement size and increment start address */
- size -= read_size;
- start += read_size;
- databuf += read_size;
- }
- printk(KERN_DEBUG "Done\n");
+ /* Handle Flow Control */
+ fcbits = SDPCM_FCMASK_VALUE(
+ &bus->rxhdr[SDPCM_FRAMETAG_LEN]);
- /* free buf before return !!! */
- if (brcmf_write_to_file(bus->drvr, buf, bus->ramsize)) {
- brcmf_dbg(ERROR, "Error writing to files\n");
- return -1;
- }
+ if (bus->flowcontrol != fcbits) {
+ if (~bus->flowcontrol & fcbits)
+ bus->fc_xoff++;
- /* buf free handled in brcmf_write_to_file, not here */
- return 0;
-}
+ if (bus->flowcontrol & ~fcbits)
+ bus->fc_xon++;
-#define CONSOLE_LINE_MAX 192
+ bus->fc_rcvd++;
+ bus->flowcontrol = fcbits;
+ }
-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;
+ /* Check and update sequence number */
+ if (rxseq != seq) {
+ brcmf_dbg(INFO, "(nextlen): rx_seq %d, expected %d\n",
+ seq, rxseq);
+ bus->rx_badseq++;
+ rxseq = seq;
+ }
- /* Don't do anything until FWREADY updates console address */
- if (bus->console_addr == 0)
- return 0;
+ /* Check window for sanity */
+ if ((u8) (txmax - bus->tx_seq) > 0x40) {
+ brcmf_dbg(ERROR, "got unlikely tx max %d with tx_seq %d\n",
+ txmax, bus->tx_seq);
+ txmax = bus->tx_seq + 2;
+ }
+ bus->tx_max = txmax;
- /* 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;
+#ifdef BCMDBG
+ if (BRCMF_BYTES_ON() && BRCMF_DATA_ON()) {
+ printk(KERN_DEBUG "Rx Data:\n");
+ print_hex_dump_bytes("", DUMP_PREFIX_OFFSET,
+ rxbuf, len);
+ } else if (BRCMF_HDRS_ON()) {
+ printk(KERN_DEBUG "RxHdr:\n");
+ print_hex_dump_bytes("", DUMP_PREFIX_OFFSET,
+ bus->rxhdr, SDPCM_HDRLEN);
+ }
+#endif
- /* 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;
- }
+ if (chan == SDPCM_CONTROL_CHANNEL) {
+ brcmf_dbg(ERROR, "(nextlen): readahead on control packet %d?\n",
+ seq);
+ /* Force retry w/normal header read */
+ bus->nextlen = 0;
+ brcmf_sdbrcm_rxfail(bus, false, true);
+ brcmf_sdbrcm_pktfree2(bus, pkt);
+ continue;
+ }
- idx = le32_to_cpu(c->log.idx);
+ /* Validate data offset */
+ if ((doff < SDPCM_HDRLEN) || (doff > len)) {
+ brcmf_dbg(ERROR, "(nextlen): bad data offset %d: HW len %d min %d\n",
+ doff, len, SDPCM_HDRLEN);
+ brcmf_sdbrcm_rxfail(bus, false, false);
+ brcmf_sdbrcm_pktfree2(bus, pkt);
+ continue;
+ }
- /* Protect against corrupt value */
- if (idx > c->bufsize)
- return -EBADE;
+ /* All done with this one -- now deliver the packet */
+ goto deliver;
+ }
- /* Skip reading the console buffer if the index pointer
- has not moved */
- if (idx == c->last)
- return 0;
+ /* Read frame header (hardware and software) */
+ sdret = brcmf_sdcard_recv_buf(bus->sdiodev, bus->sdiodev->sbwad,
+ SDIO_FUNC_2, F2SYNC, bus->rxhdr, firstread,
+ NULL);
+ bus->f2rxhdrs++;
- /* 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;
+ if (sdret < 0) {
+ brcmf_dbg(ERROR, "RXHEADER FAILED: %d\n", sdret);
+ bus->rx_hdrfail++;
+ brcmf_sdbrcm_rxfail(bus, true, true);
+ continue;
+ }
+#ifdef BCMDBG
+ if (BRCMF_BYTES_ON() || BRCMF_HDRS_ON()) {
+ printk(KERN_DEBUG "RxHdr:\n");
+ print_hex_dump_bytes("", DUMP_PREFIX_OFFSET,
+ bus->rxhdr, SDPCM_HDRLEN);
+ }
+#endif
- 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;
+ /* Extract hardware header fields */
+ len = get_unaligned_le16(bus->rxhdr);
+ check = get_unaligned_le16(bus->rxhdr + sizeof(u16));
+
+ /* All zeros means no more frames */
+ if (!(len | check)) {
+ *finished = true;
+ break;
}
- if (n > 0) {
- if (line[n - 1] == '\r')
- n--;
- line[n] = 0;
- printk(KERN_DEBUG "CONSOLE: %s\n", line);
+ /* Validate check bytes */
+ if ((u16) ~(len ^ check)) {
+ brcmf_dbg(ERROR, "HW hdr err: len/check 0x%04x/0x%04x\n",
+ len, check);
+ bus->rx_badhdr++;
+ brcmf_sdbrcm_rxfail(bus, false, false);
+ continue;
}
- }
-break2:
- return 0;
-}
-#endif /* BCMDBG */
+ /* Validate frame length */
+ if (len < SDPCM_HDRLEN) {
+ brcmf_dbg(ERROR, "HW hdr length invalid: %d\n", len);
+ continue;
+ }
-static int brcmf_sdbrcm_downloadvars(struct brcmf_bus *bus, void *arg, int len)
-{
- int bcmerror = 0;
+ /* Extract software header fields */
+ chan = SDPCM_PACKET_CHANNEL(&bus->rxhdr[SDPCM_FRAMETAG_LEN]);
+ seq = SDPCM_PACKET_SEQUENCE(&bus->rxhdr[SDPCM_FRAMETAG_LEN]);
+ doff = SDPCM_DOFFSET_VALUE(&bus->rxhdr[SDPCM_FRAMETAG_LEN]);
+ txmax = SDPCM_WINDOW_VALUE(&bus->rxhdr[SDPCM_FRAMETAG_LEN]);
- brcmf_dbg(TRACE, "Enter\n");
+ /* Validate data offset */
+ if ((doff < SDPCM_HDRLEN) || (doff > len)) {
+ brcmf_dbg(ERROR, "Bad data offset %d: HW len %d, min %d seq %d\n",
+ doff, len, SDPCM_HDRLEN, seq);
+ bus->rx_badhdr++;
+ brcmf_sdbrcm_rxfail(bus, false, false);
+ continue;
+ }
- /* 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 */
+ /* Save the readahead length if there is one */
+ bus->nextlen =
+ bus->rxhdr[SDPCM_FRAMETAG_LEN + SDPCM_NEXTLEN_OFFSET];
+ if ((bus->nextlen << 4) > MAX_RX_DATASZ) {
+ brcmf_dbg(INFO, "(nextlen): got frame w/nextlen too large (%d), seq %d\n",
+ bus->nextlen, seq);
+ bus->nextlen = 0;
+ }
- /* 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;
+ /* Handle Flow Control */
+ fcbits = SDPCM_FCMASK_VALUE(&bus->rxhdr[SDPCM_FRAMETAG_LEN]);
- if (bus->vars) {
- vbuffer = kzalloc(varsize, GFP_ATOMIC);
- if (!vbuffer)
- return -ENOMEM;
+ if (bus->flowcontrol != fcbits) {
+ if (~bus->flowcontrol & fcbits)
+ bus->fc_xoff++;
- memcpy(vbuffer, bus->vars, bus->varsz);
+ if (bus->flowcontrol & ~fcbits)
+ bus->fc_xon++;
- /* 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;
+ bus->fc_rcvd++;
+ bus->flowcontrol = fcbits;
+ }
- /* Upload image to verify downloaded contents. */
- memset(nvram_ularray, 0xaa, varsize);
+ /* Check and update sequence number */
+ if (rxseq != seq) {
+ brcmf_dbg(INFO, "rx_seq %d, expected %d\n", seq, rxseq);
+ bus->rx_badseq++;
+ rxseq = seq;
+ }
- /* 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);
+ /* Check window for sanity */
+ if ((u8) (txmax - bus->tx_seq) > 0x40) {
+ brcmf_dbg(ERROR, "unlikely tx max %d with tx_seq %d\n",
+ txmax, bus->tx_seq);
+ txmax = bus->tx_seq + 2;
}
- /* 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");
+ bus->tx_max = txmax;
- kfree(nvram_ularray);
-#endif /* BCMDBG */
+ /* Call a separate function for control frames */
+ if (chan == SDPCM_CONTROL_CHANNEL) {
+ brcmf_sdbrcm_read_control(bus, bus->rxhdr, len, doff);
+ continue;
+ }
- kfree(vbuffer);
- }
+ /* precondition: chan is either SDPCM_DATA_CHANNEL,
+ SDPCM_EVENT_CHANNEL, SDPCM_TEST_CHANNEL or
+ SDPCM_GLOM_CHANNEL */
- /* 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);
+ /* Length to read */
+ rdlen = (len > firstread) ? (len - firstread) : 0;
- /*
- * 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);
- }
+ /* May pad read to blocksize for efficiency */
+ if (bus->roundup && bus->blocksize &&
+ (rdlen > bus->blocksize)) {
+ pad = bus->blocksize - (rdlen % bus->blocksize);
+ if ((pad <= bus->roundup) && (pad < bus->blocksize) &&
+ ((rdlen + pad + firstread) < MAX_RX_DATASZ))
+ rdlen += pad;
+ } else if (rdlen % BRCMF_SDALIGN) {
+ rdlen += BRCMF_SDALIGN - (rdlen % BRCMF_SDALIGN);
+ }
- brcmf_dbg(INFO, "New varsize is %d, length token=0x%08x\n",
- varsize, varsizew);
+ /* Satisfy length-alignment requirements */
+ if (forcealign && (rdlen & (ALIGNMENT - 1)))
+ rdlen = roundup(rdlen, ALIGNMENT);
- /* Write the length token to the last word */
- bcmerror = brcmf_sdbrcm_membytes(bus, true, (bus->orig_ramsize - 4),
- (u8 *)&varsizew, 4);
+ if ((rdlen + firstread) > MAX_RX_DATASZ) {
+ /* Too long -- skip this frame */
+ brcmf_dbg(ERROR, "too long: len %d rdlen %d\n",
+ len, rdlen);
+ bus->drvr->rx_errors++;
+ bus->rx_toolong++;
+ brcmf_sdbrcm_rxfail(bus, false, false);
+ continue;
+ }
- return bcmerror;
-}
+ pkt = brcmu_pkt_buf_get_skb(rdlen + firstread + BRCMF_SDALIGN);
+ if (!pkt) {
+ /* Give up on data, request rtx of events */
+ brcmf_dbg(ERROR, "brcmu_pkt_buf_get_skb failed: rdlen %d chan %d\n",
+ rdlen, chan);
+ bus->drvr->rx_dropped++;
+ brcmf_sdbrcm_rxfail(bus, false, RETRYCHAN(chan));
+ continue;
+ }
-static int brcmf_sdbrcm_download_state(struct brcmf_bus *bus, bool enter)
-{
- uint retries;
- u32 regdata;
- int bcmerror = 0;
+ /* Leave room for what we already read, and align remainder */
+ skb_pull(pkt, firstread);
+ pkt_align(pkt, rdlen, BRCMF_SDALIGN);
- /* 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;
+ /* Read the remaining frame data */
+ sdret = brcmf_sdcard_recv_buf(bus->sdiodev, bus->sdiodev->sbwad,
+ SDIO_FUNC_2, F2SYNC, ((u8 *) (pkt->data)),
+ rdlen, pkt);
+ bus->f2rxdata++;
- brcmf_sdbrcm_chip_disablecore(bus->sdiodev,
- bus->ci->armcorebase);
+ if (sdret < 0) {
+ brcmf_dbg(ERROR, "read %d %s bytes failed: %d\n", rdlen,
+ ((chan == SDPCM_EVENT_CHANNEL) ? "event"
+ : ((chan == SDPCM_DATA_CHANNEL) ? "data"
+ : "test")), sdret);
+ brcmu_pkt_buf_free_skb(pkt);
+ bus->drvr->rx_errors++;
+ brcmf_sdbrcm_rxfail(bus, true, RETRYCHAN(chan));
+ continue;
+ }
- brcmf_sdbrcm_chip_resetcore(bus->sdiodev, bus->ci->ramcorebase);
+ /* Copy the already-read portion */
+ skb_push(pkt, firstread);
+ memcpy(pkt->data, bus->rxhdr, firstread);
- /* 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;
+#ifdef BCMDBG
+ if (BRCMF_BYTES_ON() && BRCMF_DATA_ON()) {
+ printk(KERN_DEBUG "Rx Data:\n");
+ print_hex_dump_bytes("", DUMP_PREFIX_OFFSET,
+ pkt->data, len);
}
+#endif
- bcmerror = brcmf_sdbrcm_write_vars(bus);
- if (bcmerror) {
- brcmf_dbg(ERROR, "no vars written to RAM\n");
- bcmerror = 0;
+deliver:
+ /* Save superframe descriptor and allocate packet frame */
+ if (chan == SDPCM_GLOM_CHANNEL) {
+ if (SDPCM_GLOMDESC(&bus->rxhdr[SDPCM_FRAMETAG_LEN])) {
+ brcmf_dbg(GLOM, "glom descriptor, %d bytes:\n",
+ len);
+#ifdef BCMDBG
+ if (BRCMF_GLOM_ON()) {
+ printk(KERN_DEBUG "Glom Data:\n");
+ print_hex_dump_bytes("",
+ DUMP_PREFIX_OFFSET,
+ pkt->data, len);
+ }
+#endif
+ __skb_trim(pkt, len);
+ skb_pull(pkt, SDPCM_HDRLEN);
+ bus->glomd = pkt;
+ } else {
+ brcmf_dbg(ERROR, "%s: glom superframe w/o "
+ "descriptor!\n", __func__);
+ brcmf_sdbrcm_rxfail(bus, false, false);
+ }
+ continue;
}
- w_sdreg32(bus, 0xFFFFFFFF,
- offsetof(struct sdpcmd_regs, intstatus), &retries);
+ /* Fill in packet len and prio, deliver upward */
+ __skb_trim(pkt, len);
+ skb_pull(pkt, doff);
- brcmf_sdbrcm_chip_resetcore(bus->sdiodev, bus->ci->armcorebase);
-
- /* Allow HT Clock now that the ARM is running. */
- bus->alp_only = false;
+ if (pkt->len == 0) {
+ brcmu_pkt_buf_free_skb(pkt);
+ continue;
+ } else if (brcmf_proto_hdrpull(bus->drvr, &ifidx, pkt) != 0) {
+ brcmf_dbg(ERROR, "rx protocol error\n");
+ brcmu_pkt_buf_free_skb(pkt);
+ bus->drvr->rx_errors++;
+ continue;
+ }
- bus->drvr->busstate = BRCMF_BUS_LOAD;
+ /* Unlock during rx call */
+ brcmf_sdbrcm_sdunlock(bus);
+ brcmf_rx_frame(bus->drvr, ifidx, pkt, 1);
+ brcmf_sdbrcm_sdlock(bus);
}
-fail:
- return bcmerror;
+ rxcount = maxframes - rxleft;
+#ifdef BCMDBG
+ /* Message if we hit the limit */
+ if (!rxleft)
+ brcmf_dbg(DATA, "hit rx limit of %d frames\n",
+ maxframes);
+ else
+#endif /* BCMDBG */
+ brcmf_dbg(DATA, "processed %d frames\n", rxcount);
+ /* Back off rxseq if awaiting rtx, update rx_seq */
+ if (bus->rxskip)
+ rxseq--;
+ bus->rx_seq = rxseq;
+
+ return rxcount;
}
-void brcmf_sdbrcm_bus_stop(struct brcmf_bus *bus, bool enforce_mutex)
+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 local_hostintmask;
- u8 saveclk;
- uint retries;
- int err;
+ 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");
- if (enforce_mutex)
- brcmf_sdbrcm_sdlock(bus);
+ if (bus->drvr->dongle_reset) {
+ ret = -EPERM;
+ goto done;
+ }
- bus_wake(bus);
+ frame = (u8 *) (pkt->data);
- /* Enable clock for device interrupts */
- brcmf_sdbrcm_clkctl(bus, CLK_AVAIL, false);
+ /* 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;
+ }
- if (bus->watchdog_tsk) {
- send_sig(SIGTERM, bus->watchdog_tsk, 1);
- kthread_stop(bus->watchdog_tsk);
- bus->watchdog_tsk = NULL;
+ 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 */
- 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);
+ /* 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);
- /* 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;
+ /* 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);
- /* Change our idea of bus state */
- bus->drvr->busstate = BRCMF_BUS_DOWN;
+ put_unaligned_le32(swheader, frame + SDPCM_FRAMETAG_LEN);
+ put_unaligned_le32(0, frame + SDPCM_FRAMETAG_LEN + sizeof(swheader));
- /* 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);
+#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));
}
- if (err)
- brcmf_dbg(ERROR, "Failed to force clock for F2: err %d\n", err);
+#endif
- /* 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);
+ /* 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);
+ }
- /* Clear any pending interrupts now that F2 is disabled */
- w_sdreg32(bus, local_hostintmask,
- offsetof(struct sdpcmd_regs, intstatus), &retries);
+ /* Some controllers have trouble with odd bytes -- round to even */
+ if (forcealign && (len & (ALIGNMENT - 1)))
+ len = roundup(len, ALIGNMENT);
- /* Turn off the backplane clock (only) */
- brcmf_sdbrcm_clkctl(bus, CLK_SDONLY, false);
+ do {
+ ret = brcmf_sdbrcm_send_buf(bus, bus->sdiodev->sbwad,
+ SDIO_FUNC_2, F2SYNC, frame,
+ len, pkt);
+ bus->f2txdata++;
- /* Clear the data packet queues */
- brcmu_pktq_flush(&bus->txq, true, NULL, 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++;
- /* Clear any held glomming stuff */
- if (bus->glomd)
- brcmu_pkt_buf_free_skb(bus->glomd);
+ 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++;
- if (bus->glom)
- brcmu_pkt_buf_free_skb(bus->glom);
+ 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;
+ }
- bus->glom = bus->glomd = NULL;
+ }
+ if (ret == 0)
+ bus->tx_seq = (bus->tx_seq + 1) % SDPCM_SEQUENCE_WRAP;
- /* Clear rx control and wake any waiters */
- bus->rxlen = 0;
- brcmf_sdbrcm_ioctl_resp_wake(bus);
+ } while ((ret < 0) && retrydata && retries++ < TXRETRIES);
- /* Reset some F2 state stuff */
- bus->rxskip = false;
- bus->tx_seq = bus->rx_seq = 0;
+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 (enforce_mutex)
- brcmf_sdbrcm_sdunlock(bus);
+ if (free_pkt)
+ brcmu_pkt_buf_free_skb(pkt);
+
+ return ret;
}
-int brcmf_sdbrcm_bus_init(struct brcmf_pub *drvr, bool enforce_mutex)
+static uint brcmf_sdbrcm_sendfromq(struct brcmf_bus *bus, uint maxframes)
{
- struct brcmf_bus *bus = drvr->bus;
- unsigned long timeout;
+ struct sk_buff *pkt;
+ u32 intstatus = 0;
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;
+ int ret = 0, prec_out;
+ uint cnt = 0;
+ uint datalen;
+ u8 tx_prec_map;
- /* 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;
- }
+ struct brcmf_pub *drvr = bus->drvr;
- /* 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_dbg(TRACE, "Enter\n");
- brcmf_sdcard_cfg_write(bus->sdiodev, SDIO_FUNC_0, SDIO_CCCR_IOEx,
- enable, NULL);
+ tx_prec_map = ~bus->flowcontrol;
- 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))
+ /* 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;
- 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);
+ }
+ spin_unlock_bh(&bus->txqlock);
+ datalen = pkt->len - SDPCM_HDRLEN;
- /* Set bus state according to enable result */
- drvr->busstate = BRCMF_BUS_DATA;
- }
+ ret = brcmf_sdbrcm_txpkt(bus, pkt, SDPCM_DATA_CHANNEL, true);
+ if (ret)
+ bus->drvr->tx_errors++;
+ else
+ bus->drvr->dstats.tx_bytes += datalen;
- else {
- /* Disable F2 again */
- enable = SDIO_FUNC_ENABLE_1;
- brcmf_sdcard_cfg_write(bus->sdiodev, SDIO_FUNC_0,
- SDIO_CCCR_IOEx, enable, NULL);
+ /* 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;
+ }
}
- /* 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);
+ /* 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 ret;
+ return cnt;
}
-static void brcmf_sdbrcm_rxfail(struct brcmf_bus *bus, bool abort, bool rtx)
+static bool brcmf_sdbrcm_dpc(struct brcmf_bus *bus)
{
+ u32 intstatus, newstatus = 0;
uint retries = 0;
- u16 lastrbc;
- u8 hi, lo;
- int err;
+ uint rxlimit = brcmf_rxbound; /* Rx frames to read before resched */
+ uint txlimit = brcmf_txbound; /* Tx frames to send before resched */
+ uint framecnt = 0; /* Temporary counter of tx/rx frames */
+ bool rxdone = true; /* Flag for no more read data */
+ bool resched = false; /* Flag indicating resched wanted */
- brcmf_dbg(ERROR, "%sterminate frame%s\n",
- abort ? "abort command, " : "",
- rtx ? ", send NAK" : "");
+ brcmf_dbg(TRACE, "Enter\n");
- if (abort)
- brcmf_sdcard_abort(bus->sdiodev, SDIO_FUNC_2);
+ /* Start with leftover status bits */
+ intstatus = bus->intstatus;
- brcmf_sdcard_cfg_write(bus->sdiodev, SDIO_FUNC_1,
- SBSDIO_FUNC1_FRAMECTRL,
- SFC_RF_TERM, &err);
- bus->f1regdata++;
+ brcmf_sdbrcm_sdlock(bus);
- /* Wait until the packet has been flushed (device/FIFO stable) */
- for (lastrbc = retries = 0xffff; retries > 0; retries--) {
- hi = brcmf_sdcard_cfg_read(bus->sdiodev, SDIO_FUNC_1,
- SBSDIO_FUNC1_RFRAMEBCHI, NULL);
- lo = brcmf_sdcard_cfg_read(bus->sdiodev, SDIO_FUNC_1,
- SBSDIO_FUNC1_RFRAMEBCLO, NULL);
- bus->f1regdata += 2;
+ /* If waiting for HTAVAIL, check status */
+ if (bus->clkstate == CLK_PENDING) {
+ int err;
+ u8 clkctl, devctl = 0;
- if ((hi == 0) && (lo == 0))
- break;
+#ifdef BCMDBG
+ /* Check for inconsistent device control */
+ devctl = brcmf_sdcard_cfg_read(bus->sdiodev, SDIO_FUNC_1,
+ SBSDIO_DEVICE_CTL, &err);
+ if (err) {
+ brcmf_dbg(ERROR, "error reading DEVCTL: %d\n", err);
+ bus->drvr->busstate = BRCMF_BUS_DOWN;
+ }
+#endif /* BCMDBG */
- if ((hi > (lastrbc >> 8)) && (lo > (lastrbc & 0x00ff))) {
- brcmf_dbg(ERROR, "count growing: last 0x%04x now 0x%04x\n",
- lastrbc, (hi << 8) + lo);
+ /* Read CSR, if clock on switch to AVAIL, else ignore */
+ clkctl = brcmf_sdcard_cfg_read(bus->sdiodev, SDIO_FUNC_1,
+ SBSDIO_FUNC1_CHIPCLKCSR, &err);
+ if (err) {
+ brcmf_dbg(ERROR, "error reading CSR: %d\n",
+ err);
+ bus->drvr->busstate = BRCMF_BUS_DOWN;
+ }
+
+ brcmf_dbg(INFO, "DPC: PENDING, devctl 0x%02x clkctl 0x%02x\n",
+ devctl, clkctl);
+
+ if (SBSDIO_HTAV(clkctl)) {
+ devctl = brcmf_sdcard_cfg_read(bus->sdiodev,
+ SDIO_FUNC_1,
+ SBSDIO_DEVICE_CTL, &err);
+ if (err) {
+ brcmf_dbg(ERROR, "error reading DEVCTL: %d\n",
+ err);
+ bus->drvr->busstate = BRCMF_BUS_DOWN;
+ }
+ devctl &= ~SBSDIO_DEVCTL_CA_INT_ONLY;
+ brcmf_sdcard_cfg_write(bus->sdiodev, SDIO_FUNC_1,
+ SBSDIO_DEVICE_CTL, devctl, &err);
+ if (err) {
+ brcmf_dbg(ERROR, "error writing DEVCTL: %d\n",
+ err);
+ bus->drvr->busstate = BRCMF_BUS_DOWN;
+ }
+ bus->clkstate = CLK_AVAIL;
+ } else {
+ goto clkwait;
}
- lastrbc = (hi << 8) + lo;
}
- if (!retries)
- brcmf_dbg(ERROR, "count never zeroed: last 0x%04x\n", lastrbc);
- else
- brcmf_dbg(INFO, "flush took %d iterations\n", 0xffff - retries);
+ bus_wake(bus);
- if (rtx) {
- bus->rxrtx++;
- w_sdreg32(bus, SMB_NAK,
- offsetof(struct sdpcmd_regs, tosbmailbox), &retries);
+ /* Make sure backplane clock is on */
+ brcmf_sdbrcm_clkctl(bus, CLK_AVAIL, true);
+ if (bus->clkstate == CLK_PENDING)
+ goto clkwait;
+ /* Pending interrupt indicates new device status */
+ if (bus->ipend) {
+ bus->ipend = false;
+ r_sdreg32(bus, &newstatus,
+ offsetof(struct sdpcmd_regs, intstatus), &retries);
bus->f1regdata++;
- if (retries <= retry_limit)
- bus->rxskip = true;
+ if (brcmf_sdcard_regfail(bus->sdiodev))
+ newstatus = 0;
+ newstatus &= bus->hostintmask;
+ bus->fcstate = !!(newstatus & I_HMB_FC_STATE);
+ if (newstatus) {
+ w_sdreg32(bus, newstatus,
+ offsetof(struct sdpcmd_regs, intstatus),
+ &retries);
+ bus->f1regdata++;
+ }
}
- /* Clear partial in any case */
- bus->nextlen = 0;
-
- /* If we can't reach the device, signal failure */
- if (err || brcmf_sdcard_regfail(bus->sdiodev))
- bus->drvr->busstate = BRCMF_BUS_DOWN;
-}
+ /* Merge new bits with previous */
+ intstatus |= newstatus;
+ bus->intstatus = 0;
-static void
-brcmf_sdbrcm_read_control(struct brcmf_bus *bus, u8 *hdr, uint len, uint doff)
-{
- uint rdlen, pad;
+ /* Handle flow-control change: read new state in case our ack
+ * crossed another change interrupt. If change still set, assume
+ * FC ON for safety, let next loop through do the debounce.
+ */
+ if (intstatus & I_HMB_FC_CHANGE) {
+ intstatus &= ~I_HMB_FC_CHANGE;
+ w_sdreg32(bus, I_HMB_FC_CHANGE,
+ offsetof(struct sdpcmd_regs, intstatus), &retries);
- 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;
- u8 *dptr, num = 0;
-
- u16 sublen, check;
- struct sk_buff *pfirst, *plast, *pnext, *save_pfirst;
-
- int errcode;
- u8 chan, seq, doff, sfdoff;
- u8 txmax;
-
- int ifidx = 0;
- bool usechain = bus->use_rxchain;
-
- /* If packets, issue read(s) and send up packet chain */
- /* Return sequence numbers consumed? */
-
- brcmf_dbg(TRACE, "start: glomd %p glom %p\n", bus->glomd, bus->glom);
-
- /* If there's a descriptor, generate the packet chain */
- if (bus->glomd) {
- pfirst = plast = pnext = NULL;
- dlen = (u16) (bus->glomd->len);
- dptr = bus->glomd->data;
- if (!dlen || (dlen & 1)) {
- brcmf_dbg(ERROR, "bad glomd len(%d), ignore descriptor\n",
- dlen);
- dlen = 0;
- }
-
- for (totlen = num = 0; dlen; num++) {
- /* Get (and move past) next length */
- sublen = get_unaligned_le16(dptr);
- dlen -= sizeof(u16);
- dptr += sizeof(u16);
- if ((sublen < SDPCM_HDRLEN) ||
- ((num == 0) && (sublen < (2 * SDPCM_HDRLEN)))) {
- brcmf_dbg(ERROR, "descriptor len %d bad: %d\n",
- num, sublen);
- pnext = NULL;
- break;
- }
- if (sublen % BRCMF_SDALIGN) {
- brcmf_dbg(ERROR, "sublen %d not multiple of %d\n",
- sublen, BRCMF_SDALIGN);
- usechain = false;
- }
- totlen += sublen;
-
- /* For last frame, adjust read len so total
- is a block multiple */
- if (!dlen) {
- sublen +=
- (roundup(totlen, bus->blocksize) - totlen);
- totlen = roundup(totlen, bus->blocksize);
- }
-
- /* Allocate/chain packet for next subframe */
- pnext = brcmu_pkt_buf_get_skb(sublen + BRCMF_SDALIGN);
- if (pnext == NULL) {
- brcmf_dbg(ERROR, "bcm_pkt_buf_get_skb failed, num %d len %d\n",
- num, sublen);
- break;
- }
- if (!pfirst) {
- pfirst = plast = pnext;
- } else {
- plast->next = pnext;
- plast = pnext;
- }
-
- /* Adhere to start alignment requirements */
- pkt_align(pnext, sublen, BRCMF_SDALIGN);
- }
-
- /* If all allocations succeeded, save packet chain
- in bus structure */
- if (pnext) {
- brcmf_dbg(GLOM, "allocated %d-byte packet chain for %d subframes\n",
- totlen, num);
- if (BRCMF_GLOM_ON() && bus->nextlen) {
- if (totlen != bus->nextlen) {
- brcmf_dbg(GLOM, "glomdesc mismatch: nextlen %d glomdesc %d rxseq %d\n",
- bus->nextlen, totlen, rxseq);
- }
- }
- bus->glom = pfirst;
- pfirst = pnext = NULL;
- } else {
- if (pfirst)
- brcmu_pkt_buf_free_skb(pfirst);
- bus->glom = NULL;
- num = 0;
- }
-
- /* Done with descriptor packet */
- brcmu_pkt_buf_free_skb(bus->glomd);
- bus->glomd = NULL;
- bus->nextlen = 0;
+ r_sdreg32(bus, &newstatus,
+ offsetof(struct sdpcmd_regs, intstatus), &retries);
+ bus->f1regdata += 2;
+ bus->fcstate =
+ !!(newstatus & (I_HMB_FC_STATE | I_HMB_FC_CHANGE));
+ intstatus |= (newstatus & bus->hostintmask);
}
- /* Ok -- either we just generated a packet chain,
- or had one from before */
- if (bus->glom) {
- if (BRCMF_GLOM_ON()) {
- brcmf_dbg(GLOM, "try superframe read, packet chain:\n");
- for (pnext = bus->glom; pnext; pnext = pnext->next) {
- brcmf_dbg(GLOM, " %p: %p len 0x%04x (%d)\n",
- pnext, (u8 *) (pnext->data),
- pnext->len, pnext->len);
- }
- }
-
- pfirst = bus->glom;
- dlen = (u16) brcmu_pkttotlen(pfirst);
-
- /* Do an SDIO read for the superframe. Configurable iovar to
- * read directly into the chained packet, or allocate a large
- * packet and and copy into the chain.
- */
- if (usechain) {
- errcode = brcmf_sdcard_recv_buf(bus->sdiodev,
- bus->sdiodev->sbwad,
- SDIO_FUNC_2,
- F2SYNC, (u8 *) pfirst->data, dlen,
- pfirst);
- } else if (bus->dataptr) {
- errcode = brcmf_sdcard_recv_buf(bus->sdiodev,
- bus->sdiodev->sbwad,
- SDIO_FUNC_2,
- F2SYNC, bus->dataptr, dlen,
- NULL);
- sublen = (u16) brcmu_pktfrombuf(pfirst, 0, dlen,
- bus->dataptr);
- if (sublen != dlen) {
- brcmf_dbg(ERROR, "FAILED TO COPY, dlen %d sublen %d\n",
- dlen, sublen);
- errcode = -1;
- }
- pnext = NULL;
- } else {
- brcmf_dbg(ERROR, "COULDN'T ALLOC %d-BYTE GLOM, FORCE FAILURE\n",
- dlen);
- errcode = -1;
- }
- bus->f2rxdata++;
-
- /* On failure, kill the superframe, allow a couple retries */
- if (errcode < 0) {
- brcmf_dbg(ERROR, "glom read of %d bytes failed: %d\n",
- dlen, errcode);
- bus->drvr->rx_errors++;
-
- if (bus->glomerr++ < 3) {
- brcmf_sdbrcm_rxfail(bus, true, true);
- } else {
- bus->glomerr = 0;
- brcmf_sdbrcm_rxfail(bus, true, false);
- brcmu_pkt_buf_free_skb(bus->glom);
- bus->rxglomfail++;
- bus->glom = NULL;
- }
- return 0;
- }
-#ifdef BCMDBG
- if (BRCMF_GLOM_ON()) {
- printk(KERN_DEBUG "SUPERFRAME:\n");
- print_hex_dump_bytes("", DUMP_PREFIX_OFFSET,
- pfirst->data, min_t(int, pfirst->len, 48));
- }
-#endif
-
- /* Validate the superframe header */
- dptr = (u8 *) (pfirst->data);
- sublen = get_unaligned_le16(dptr);
- check = get_unaligned_le16(dptr + sizeof(u16));
-
- chan = SDPCM_PACKET_CHANNEL(&dptr[SDPCM_FRAMETAG_LEN]);
- seq = SDPCM_PACKET_SEQUENCE(&dptr[SDPCM_FRAMETAG_LEN]);
- bus->nextlen = dptr[SDPCM_FRAMETAG_LEN + SDPCM_NEXTLEN_OFFSET];
- if ((bus->nextlen << 4) > MAX_RX_DATASZ) {
- brcmf_dbg(INFO, "nextlen too large (%d) seq %d\n",
- bus->nextlen, seq);
- bus->nextlen = 0;
- }
- doff = SDPCM_DOFFSET_VALUE(&dptr[SDPCM_FRAMETAG_LEN]);
- txmax = SDPCM_WINDOW_VALUE(&dptr[SDPCM_FRAMETAG_LEN]);
-
- errcode = 0;
- if ((u16)~(sublen ^ check)) {
- brcmf_dbg(ERROR, "(superframe): HW hdr error: len/check 0x%04x/0x%04x\n",
- sublen, check);
- errcode = -1;
- } else if (roundup(sublen, bus->blocksize) != dlen) {
- brcmf_dbg(ERROR, "(superframe): len 0x%04x, rounded 0x%04x, expect 0x%04x\n",
- sublen, roundup(sublen, bus->blocksize),
- dlen);
- errcode = -1;
- } else if (SDPCM_PACKET_CHANNEL(&dptr[SDPCM_FRAMETAG_LEN]) !=
- SDPCM_GLOM_CHANNEL) {
- brcmf_dbg(ERROR, "(superframe): bad channel %d\n",
- SDPCM_PACKET_CHANNEL(
- &dptr[SDPCM_FRAMETAG_LEN]));
- errcode = -1;
- } else if (SDPCM_GLOMDESC(&dptr[SDPCM_FRAMETAG_LEN])) {
- brcmf_dbg(ERROR, "(superframe): got 2nd descriptor?\n");
- errcode = -1;
- } else if ((doff < SDPCM_HDRLEN) ||
- (doff > (pfirst->len - SDPCM_HDRLEN))) {
- brcmf_dbg(ERROR, "(superframe): Bad data offset %d: HW %d pkt %d min %d\n",
- doff, sublen, pfirst->len, SDPCM_HDRLEN);
- errcode = -1;
- }
-
- /* Check sequence number of superframe SW header */
- if (rxseq != seq) {
- brcmf_dbg(INFO, "(superframe) rx_seq %d, expected %d\n",
- seq, rxseq);
- bus->rx_badseq++;
- rxseq = seq;
- }
-
- /* Check window for sanity */
- if ((u8) (txmax - bus->tx_seq) > 0x40) {
- brcmf_dbg(ERROR, "unlikely tx max %d with tx_seq %d\n",
- txmax, bus->tx_seq);
- txmax = bus->tx_seq + 2;
- }
- bus->tx_max = txmax;
-
- /* Remove superframe header, remember offset */
- skb_pull(pfirst, doff);
- sfdoff = doff;
-
- /* Validate all the subframe headers */
- for (num = 0, pnext = pfirst; pnext && !errcode;
- num++, pnext = pnext->next) {
- dptr = (u8 *) (pnext->data);
- dlen = (u16) (pnext->len);
- sublen = get_unaligned_le16(dptr);
- check = get_unaligned_le16(dptr + sizeof(u16));
- chan = SDPCM_PACKET_CHANNEL(&dptr[SDPCM_FRAMETAG_LEN]);
- doff = SDPCM_DOFFSET_VALUE(&dptr[SDPCM_FRAMETAG_LEN]);
-#ifdef BCMDBG
- if (BRCMF_GLOM_ON()) {
- printk(KERN_DEBUG "subframe:\n");
- print_hex_dump_bytes("", DUMP_PREFIX_OFFSET,
- dptr, 32);
- }
-#endif
-
- if ((u16)~(sublen ^ check)) {
- brcmf_dbg(ERROR, "(subframe %d): HW hdr error: len/check 0x%04x/0x%04x\n",
- num, sublen, check);
- errcode = -1;
- } else if ((sublen > dlen) || (sublen < SDPCM_HDRLEN)) {
- brcmf_dbg(ERROR, "(subframe %d): length mismatch: len 0x%04x, expect 0x%04x\n",
- num, sublen, dlen);
- errcode = -1;
- } else if ((chan != SDPCM_DATA_CHANNEL) &&
- (chan != SDPCM_EVENT_CHANNEL)) {
- brcmf_dbg(ERROR, "(subframe %d): bad channel %d\n",
- num, chan);
- errcode = -1;
- } else if ((doff < SDPCM_HDRLEN) || (doff > sublen)) {
- brcmf_dbg(ERROR, "(subframe %d): Bad data offset %d: HW %d min %d\n",
- num, doff, sublen, SDPCM_HDRLEN);
- errcode = -1;
- }
- }
-
- if (errcode) {
- /* Terminate frame on error, request
- a couple retries */
- if (bus->glomerr++ < 3) {
- /* Restore superframe header space */
- skb_push(pfirst, sfdoff);
- brcmf_sdbrcm_rxfail(bus, true, true);
- } else {
- bus->glomerr = 0;
- brcmf_sdbrcm_rxfail(bus, true, false);
- brcmu_pkt_buf_free_skb(bus->glom);
- bus->rxglomfail++;
- bus->glom = NULL;
- }
- bus->nextlen = 0;
- return 0;
- }
-
- /* Basic SD framing looks ok - process each packet (header) */
- save_pfirst = pfirst;
- bus->glom = NULL;
- plast = NULL;
-
- for (num = 0; pfirst; rxseq++, pfirst = pnext) {
- pnext = pfirst->next;
- pfirst->next = NULL;
-
- dptr = (u8 *) (pfirst->data);
- sublen = get_unaligned_le16(dptr);
- chan = SDPCM_PACKET_CHANNEL(&dptr[SDPCM_FRAMETAG_LEN]);
- seq = SDPCM_PACKET_SEQUENCE(&dptr[SDPCM_FRAMETAG_LEN]);
- doff = SDPCM_DOFFSET_VALUE(&dptr[SDPCM_FRAMETAG_LEN]);
-
- brcmf_dbg(GLOM, "Get subframe %d, %p(%p/%d), sublen %d chan %d seq %d\n",
- num, pfirst, pfirst->data,
- pfirst->len, sublen, chan, seq);
-
- /* precondition: chan == SDPCM_DATA_CHANNEL ||
- chan == SDPCM_EVENT_CHANNEL */
-
- if (rxseq != seq) {
- brcmf_dbg(GLOM, "rx_seq %d, expected %d\n",
- seq, rxseq);
- bus->rx_badseq++;
- rxseq = seq;
- }
-#ifdef BCMDBG
- if (BRCMF_BYTES_ON() && BRCMF_DATA_ON()) {
- printk(KERN_DEBUG "Rx Subframe Data:\n");
- print_hex_dump_bytes("", DUMP_PREFIX_OFFSET,
- dptr, dlen);
- }
-#endif
-
- __skb_trim(pfirst, sublen);
- skb_pull(pfirst, doff);
-
- if (pfirst->len == 0) {
- brcmu_pkt_buf_free_skb(pfirst);
- if (plast)
- plast->next = pnext;
- else
- save_pfirst = pnext;
-
- continue;
- } else if (brcmf_proto_hdrpull(bus->drvr, &ifidx,
- pfirst) != 0) {
- brcmf_dbg(ERROR, "rx protocol error\n");
- bus->drvr->rx_errors++;
- brcmu_pkt_buf_free_skb(pfirst);
- if (plast)
- plast->next = pnext;
- else
- save_pfirst = pnext;
-
- continue;
- }
-
- /* this packet will go up, link back into
- chain and count it */
- pfirst->next = pnext;
- plast = pfirst;
- num++;
-
-#ifdef BCMDBG
- if (BRCMF_GLOM_ON()) {
- brcmf_dbg(GLOM, "subframe %d to stack, %p (%p/%d) nxt/lnk %p/%p\n",
- num, pfirst, pfirst->data,
- pfirst->len, pfirst->next,
- pfirst->prev);
- print_hex_dump_bytes("", DUMP_PREFIX_OFFSET,
- pfirst->data,
- min_t(int, pfirst->len, 32));
- }
-#endif /* BCMDBG */
- }
- if (num) {
- brcmf_sdbrcm_sdunlock(bus);
- brcmf_rx_frame(bus->drvr, ifidx, save_pfirst, num);
- brcmf_sdbrcm_sdlock(bus);
- }
+ /* Handle host mailbox indication */
+ if (intstatus & I_HMB_HOST_INT) {
+ intstatus &= ~I_HMB_HOST_INT;
+ intstatus |= brcmf_sdbrcm_hostmail(bus);
+ }
- bus->rxglomframes++;
- bus->rxglompkts += num;
+ /* Generally don't ask for these, can get CRC errors... */
+ if (intstatus & I_WR_OOSYNC) {
+ brcmf_dbg(ERROR, "Dongle reports WR_OOSYNC\n");
+ intstatus &= ~I_WR_OOSYNC;
}
- return num;
-}
-/* Return true if there may be more frames to read */
-static uint
-brcmf_sdbrcm_readframes(struct brcmf_bus *bus, uint maxframes, bool *finished)
-{
- u16 len, check; /* Extracted hardware header fields */
- u8 chan, seq, doff; /* Extracted software header fields */
- u8 fcbits; /* Extracted fcbits from software header */
+ if (intstatus & I_RD_OOSYNC) {
+ brcmf_dbg(ERROR, "Dongle reports RD_OOSYNC\n");
+ intstatus &= ~I_RD_OOSYNC;
+ }
- struct sk_buff *pkt; /* Packet for event or data frames */
- u16 pad; /* Number of pad bytes to read */
- u16 rdlen; /* Total number of bytes to read */
- u8 rxseq; /* Next sequence number to expect */
- uint rxleft = 0; /* Remaining number of frames allowed */
- int sdret; /* Return code from calls */
- u8 txmax; /* Maximum tx sequence offered */
- bool len_consistent; /* Result of comparing readahead len and
- len from hw-hdr */
- u8 *rxbuf;
- int ifidx = 0;
- uint rxcount = 0; /* Total frames read */
+ if (intstatus & I_SBINT) {
+ brcmf_dbg(ERROR, "Dongle reports SBINT\n");
+ intstatus &= ~I_SBINT;
+ }
- brcmf_dbg(TRACE, "Enter\n");
+ /* Would be active due to wake-wlan in gSPI */
+ if (intstatus & I_CHIPACTIVE) {
+ brcmf_dbg(INFO, "Dongle reports CHIPACTIVE\n");
+ intstatus &= ~I_CHIPACTIVE;
+ }
- /* Not finished unless we encounter no more frames indication */
- *finished = false;
+ /* Ignore frame indications if rxskip is set */
+ if (bus->rxskip)
+ intstatus &= ~I_HMB_FRAME_IND;
- for (rxseq = bus->rx_seq, rxleft = maxframes;
- !bus->rxskip && rxleft && bus->drvr->busstate != BRCMF_BUS_DOWN;
- rxseq++, rxleft--) {
+ /* On frame indication, read available frames */
+ if (PKT_AVAILABLE()) {
+ framecnt = brcmf_sdbrcm_readframes(bus, rxlimit, &rxdone);
+ if (rxdone || bus->rxskip)
+ intstatus &= ~I_HMB_FRAME_IND;
+ rxlimit -= min(framecnt, rxlimit);
+ }
- /* Handle glomming separately */
- if (bus->glom || bus->glomd) {
- u8 cnt;
- brcmf_dbg(GLOM, "calling rxglom: glomd %p, glom %p\n",
- bus->glomd, bus->glom);
- cnt = brcmf_sdbrcm_rxglom(bus, rxseq);
- brcmf_dbg(GLOM, "rxglom returned %d\n", cnt);
- rxseq += cnt - 1;
- rxleft = (rxleft > cnt) ? (rxleft - cnt) : 1;
- continue;
- }
+ /* Keep still-pending events for next scheduling */
+ bus->intstatus = intstatus;
- /* Try doing single read if we can */
- if (brcmf_readahead && bus->nextlen) {
- u16 nextlen = bus->nextlen;
- bus->nextlen = 0;
+clkwait:
+ if (data_ok(bus) && bus->ctrl_frame_stat &&
+ (bus->clkstate == CLK_AVAIL)) {
+ int ret, i;
- rdlen = len = nextlen << 4;
+ ret = brcmf_sdbrcm_send_buf(bus, bus->sdiodev->sbwad,
+ SDIO_FUNC_2, F2SYNC, (u8 *) bus->ctrl_frame_buf,
+ (u32) bus->ctrl_frame_len, NULL);
- /* Pad read to blocksize for efficiency */
- if (bus->roundup && bus->blocksize
- && (rdlen > bus->blocksize)) {
- pad =
- bus->blocksize -
- (rdlen % bus->blocksize);
- if ((pad <= bus->roundup)
- && (pad < bus->blocksize)
- && ((rdlen + pad + firstread) <
- MAX_RX_DATASZ))
- rdlen += pad;
- } else if (rdlen % BRCMF_SDALIGN) {
- rdlen += BRCMF_SDALIGN -
- (rdlen % BRCMF_SDALIGN);
- }
+ 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++;
- /* We use bus->rxctl buffer in WinXP for initial
- * control pkt receives.
- * Later we use buffer-poll for data as well
- * as control packets.
- * This is required because dhd receives full
- * frame in gSPI unlike SDIO.
- * After the frame is received we have to
- * distinguish whether it is data
- * or non-data frame.
- */
- /* Allocate a packet buffer */
- pkt = brcmu_pkt_buf_get_skb(rdlen + BRCMF_SDALIGN);
- if (!pkt) {
- /* Give up on data, request rtx of events */
- brcmf_dbg(ERROR, "(nextlen): brcmu_pkt_buf_get_skb failed: len %d rdlen %d expected rxseq %d\n",
- len, rdlen, rxseq);
- continue;
- } else {
- pkt_align(pkt, rdlen, BRCMF_SDALIGN);
- rxbuf = (u8 *) (pkt->data);
- /* Read the entire frame */
- sdret = brcmf_sdcard_recv_buf(bus->sdiodev,
- bus->sdiodev->sbwad,
- SDIO_FUNC_2, F2SYNC,
- rxbuf, rdlen,
- pkt);
- bus->f2rxdata++;
+ brcmf_sdcard_abort(bus->sdiodev, SDIO_FUNC_2);
- if (sdret < 0) {
- brcmf_dbg(ERROR, "(nextlen): read %d bytes failed: %d\n",
- rdlen, sdret);
- brcmu_pkt_buf_free_skb(pkt);
- bus->drvr->rx_errors++;
- /* Force retry w/normal header read.
- * Don't attempt NAK for
- * gSPI
- */
- brcmf_sdbrcm_rxfail(bus, true, true);
- continue;
- }
+ 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;
}
- /* Now check the header */
- memcpy(bus->rxhdr, rxbuf, SDPCM_HDRLEN);
+ }
+ if (ret == 0)
+ bus->tx_seq = (bus->tx_seq + 1) % SDPCM_SEQUENCE_WRAP;
- /* Extract hardware header fields */
- len = get_unaligned_le16(bus->rxhdr);
- check = get_unaligned_le16(bus->rxhdr + sizeof(u16));
+ brcmf_dbg(INFO, "Return_dpc value is : %d\n", ret);
+ bus->ctrl_frame_stat = false;
+ brcmf_sdbrcm_wait_event_wakeup(bus);
+ }
+ /* Send queued frames (limit 1 if rx may still be pending) */
+ else if ((bus->clkstate == CLK_AVAIL) && !bus->fcstate &&
+ brcmu_pktq_mlen(&bus->txq, ~bus->flowcontrol) && txlimit
+ && data_ok(bus)) {
+ framecnt = rxdone ? txlimit : min(txlimit, brcmf_txminmax);
+ framecnt = brcmf_sdbrcm_sendfromq(bus, framecnt);
+ txlimit -= framecnt;
+ }
- /* All zeros means readahead info was bad */
- if (!(len | check)) {
- brcmf_dbg(INFO, "(nextlen): read zeros in HW header???\n");
- brcmf_sdbrcm_pktfree2(bus, pkt);
- continue;
- }
+ /* Resched if events or tx frames are pending,
+ else await next interrupt */
+ /* On failed register access, all bets are off:
+ no resched or interrupts */
+ if ((bus->drvr->busstate == BRCMF_BUS_DOWN) ||
+ brcmf_sdcard_regfail(bus->sdiodev)) {
+ brcmf_dbg(ERROR, "failed backplane access over SDIO, halting operation %d\n",
+ brcmf_sdcard_regfail(bus->sdiodev));
+ bus->drvr->busstate = BRCMF_BUS_DOWN;
+ bus->intstatus = 0;
+ } else if (bus->clkstate == CLK_PENDING) {
+ brcmf_dbg(INFO, "rescheduled due to CLK_PENDING awaiting I_CHIPACTIVE interrupt\n");
+ resched = true;
+ } else if (bus->intstatus || bus->ipend ||
+ (!bus->fcstate && brcmu_pktq_mlen(&bus->txq, ~bus->flowcontrol)
+ && data_ok(bus)) || PKT_AVAILABLE()) {
+ resched = true;
+ }
- /* Validate check bytes */
- if ((u16)~(len ^ check)) {
- brcmf_dbg(ERROR, "(nextlen): HW hdr error: nextlen/len/check 0x%04x/0x%04x/0x%04x\n",
- nextlen, len, check);
- bus->rx_badhdr++;
- brcmf_sdbrcm_rxfail(bus, false, false);
- brcmf_sdbrcm_pktfree2(bus, pkt);
- continue;
- }
+ bus->dpc_sched = resched;
- /* Validate frame length */
- if (len < SDPCM_HDRLEN) {
- brcmf_dbg(ERROR, "(nextlen): HW hdr length invalid: %d\n",
- len);
- brcmf_sdbrcm_pktfree2(bus, pkt);
- continue;
- }
+ /* If we're done for now, turn off clock request. */
+ if ((bus->clkstate != CLK_PENDING)
+ && bus->idletime == BRCMF_IDLE_IMMEDIATE) {
+ bus->activity = false;
+ brcmf_sdbrcm_clkctl(bus, CLK_NONE, false);
+ }
- /* Check for consistency withreadahead info */
- len_consistent = (nextlen != (roundup(len, 16) >> 4));
- if (len_consistent) {
- /* Mismatch, force retry w/normal
- header (may be >4K) */
- brcmf_dbg(ERROR, "(nextlen): mismatch, nextlen %d len %d rnd %d; expected rxseq %d\n",
- nextlen, len, roundup(len, 16),
- rxseq);
- brcmf_sdbrcm_rxfail(bus, true, true);
- brcmf_sdbrcm_pktfree2(bus, pkt);
- continue;
- }
+ brcmf_sdbrcm_sdunlock(bus);
- /* Extract software header fields */
- chan = SDPCM_PACKET_CHANNEL(
- &bus->rxhdr[SDPCM_FRAMETAG_LEN]);
- seq = SDPCM_PACKET_SEQUENCE(
- &bus->rxhdr[SDPCM_FRAMETAG_LEN]);
- doff = SDPCM_DOFFSET_VALUE(
- &bus->rxhdr[SDPCM_FRAMETAG_LEN]);
- txmax = SDPCM_WINDOW_VALUE(
- &bus->rxhdr[SDPCM_FRAMETAG_LEN]);
+ return resched;
+}
+
+static int brcmf_sdbrcm_dpc_thread(void *data)
+{
+ struct brcmf_bus *bus = (struct brcmf_bus *) data;
- bus->nextlen =
- bus->rxhdr[SDPCM_FRAMETAG_LEN +
- SDPCM_NEXTLEN_OFFSET];
- if ((bus->nextlen << 4) > MAX_RX_DATASZ) {
- brcmf_dbg(INFO, "(nextlen): got frame w/nextlen too large (%d), seq %d\n",
- bus->nextlen, seq);
- bus->nextlen = 0;
+ /* 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;
+}
- bus->drvr->rx_readahead_cnt++;
+static void brcmf_sdbrcm_dpc_tasklet(unsigned long data)
+{
+ struct brcmf_bus *bus = (struct brcmf_bus *) data;
- /* Handle Flow Control */
- fcbits = SDPCM_FCMASK_VALUE(
- &bus->rxhdr[SDPCM_FRAMETAG_LEN]);
+ /* 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);
+}
- if (bus->flowcontrol != fcbits) {
- if (~bus->flowcontrol & fcbits)
- bus->fc_xoff++;
+static void brcmf_sdbrcm_sched_dpc(struct brcmf_bus *bus)
+{
+ if (bus->dpc_tsk) {
+ complete(&bus->dpc_wait);
+ return;
+ }
- if (bus->flowcontrol & ~fcbits)
- bus->fc_xon++;
+ tasklet_schedule(&bus->tasklet);
+}
- bus->fc_rcvd++;
- bus->flowcontrol = fcbits;
- }
+int brcmf_sdbrcm_bus_txdata(struct brcmf_bus *bus, struct sk_buff *pkt)
+{
+ int ret = -EBADE;
+ uint datalen, prec;
- /* Check and update sequence number */
- if (rxseq != seq) {
- brcmf_dbg(INFO, "(nextlen): rx_seq %d, expected %d\n",
- seq, rxseq);
- bus->rx_badseq++;
- rxseq = seq;
- }
+ brcmf_dbg(TRACE, "Enter\n");
- /* Check window for sanity */
- if ((u8) (txmax - bus->tx_seq) > 0x40) {
- brcmf_dbg(ERROR, "got unlikely tx max %d with tx_seq %d\n",
- txmax, bus->tx_seq);
- txmax = bus->tx_seq + 2;
- }
- bus->tx_max = txmax;
+ datalen = pkt->len;
-#ifdef BCMDBG
- if (BRCMF_BYTES_ON() && BRCMF_DATA_ON()) {
- printk(KERN_DEBUG "Rx Data:\n");
- print_hex_dump_bytes("", DUMP_PREFIX_OFFSET,
- rxbuf, len);
- } else if (BRCMF_HDRS_ON()) {
- printk(KERN_DEBUG "RxHdr:\n");
- print_hex_dump_bytes("", DUMP_PREFIX_OFFSET,
- bus->rxhdr, SDPCM_HDRLEN);
- }
-#endif
+ /* Add space for the header */
+ skb_push(pkt, SDPCM_HDRLEN);
+ /* precondition: IS_ALIGNED((unsigned long)(pkt->data), 2) */
- if (chan == SDPCM_CONTROL_CHANNEL) {
- brcmf_dbg(ERROR, "(nextlen): readahead on control packet %d?\n",
- seq);
- /* Force retry w/normal header read */
- bus->nextlen = 0;
- brcmf_sdbrcm_rxfail(bus, false, true);
- brcmf_sdbrcm_pktfree2(bus, pkt);
- continue;
- }
+ prec = prio2prec((pkt->priority & PRIOMASK));
- /* Validate data offset */
- if ((doff < SDPCM_HDRLEN) || (doff > len)) {
- brcmf_dbg(ERROR, "(nextlen): bad data offset %d: HW len %d min %d\n",
- doff, len, SDPCM_HDRLEN);
- brcmf_sdbrcm_rxfail(bus, false, false);
- brcmf_sdbrcm_pktfree2(bus, pkt);
- continue;
- }
+ /* 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++;
- /* All done with this one -- now deliver the packet */
- goto deliver;
+ /* 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);
- /* Read frame header (hardware and software) */
- sdret = brcmf_sdcard_recv_buf(bus->sdiodev, bus->sdiodev->sbwad,
- SDIO_FUNC_2, F2SYNC, bus->rxhdr, firstread,
- NULL);
- bus->f2rxhdrs++;
+ if (pktq_len(&bus->txq) >= TXHI)
+ brcmf_txflowcontrol(bus->drvr, 0, ON);
- if (sdret < 0) {
- brcmf_dbg(ERROR, "RXHEADER FAILED: %d\n", sdret);
- bus->rx_hdrfail++;
- brcmf_sdbrcm_rxfail(bus, true, true);
- continue;
- }
#ifdef BCMDBG
- if (BRCMF_BYTES_ON() || BRCMF_HDRS_ON()) {
- printk(KERN_DEBUG "RxHdr:\n");
- print_hex_dump_bytes("", DUMP_PREFIX_OFFSET,
- bus->rxhdr, SDPCM_HDRLEN);
- }
+ 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);
- /* Extract hardware header fields */
- len = get_unaligned_le16(bus->rxhdr);
- check = get_unaligned_le16(bus->rxhdr + sizeof(u16));
+ /* 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);
- /* All zeros means no more frames */
- if (!(len | check)) {
- *finished = true;
- break;
- }
+ 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;
- /* Validate check bytes */
- if ((u16) ~(len ^ check)) {
- brcmf_dbg(ERROR, "HW hdr err: len/check 0x%04x/0x%04x\n",
- len, check);
- bus->rx_badhdr++;
- brcmf_sdbrcm_rxfail(bus, false, false);
- continue;
+ if (bus->idletime == BRCMF_IDLE_IMMEDIATE &&
+ !bus->dpc_sched) {
+ bus->activity = false;
+ brcmf_sdbrcm_clkctl(bus, CLK_NONE, true);
}
- /* Validate frame length */
- if (len < SDPCM_HDRLEN) {
- brcmf_dbg(ERROR, "HW hdr length invalid: %d\n", len);
- continue;
- }
+ brcmf_sdbrcm_sdunlock(bus);
+ }
- /* Extract software header fields */
- chan = SDPCM_PACKET_CHANNEL(&bus->rxhdr[SDPCM_FRAMETAG_LEN]);
- seq = SDPCM_PACKET_SEQUENCE(&bus->rxhdr[SDPCM_FRAMETAG_LEN]);
- doff = SDPCM_DOFFSET_VALUE(&bus->rxhdr[SDPCM_FRAMETAG_LEN]);
- txmax = SDPCM_WINDOW_VALUE(&bus->rxhdr[SDPCM_FRAMETAG_LEN]);
+ return ret;
+}
- /* Validate data offset */
- if ((doff < SDPCM_HDRLEN) || (doff > len)) {
- brcmf_dbg(ERROR, "Bad data offset %d: HW len %d, min %d seq %d\n",
- doff, len, SDPCM_HDRLEN, seq);
- bus->rx_badhdr++;
- brcmf_sdbrcm_rxfail(bus, false, false);
- continue;
- }
+static int
+brcmf_sdbrcm_membytes(struct brcmf_bus *bus, bool write, u32 address, u8 *data,
+ uint size)
+{
+ int bcmerror = 0;
+ u32 sdaddr;
+ uint dsize;
- /* Save the readahead length if there is one */
- bus->nextlen =
- bus->rxhdr[SDPCM_FRAMETAG_LEN + SDPCM_NEXTLEN_OFFSET];
- if ((bus->nextlen << 4) > MAX_RX_DATASZ) {
- brcmf_dbg(INFO, "(nextlen): got frame w/nextlen too large (%d), seq %d\n",
- bus->nextlen, seq);
- bus->nextlen = 0;
+ /* 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;
}
- /* Handle Flow Control */
- fcbits = SDPCM_FCMASK_VALUE(&bus->rxhdr[SDPCM_FRAMETAG_LEN]);
-
- if (bus->flowcontrol != fcbits) {
- if (~bus->flowcontrol & fcbits)
- bus->fc_xoff++;
+ /* 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);
+ }
+ }
- if (bus->flowcontrol & ~fcbits)
- bus->fc_xon++;
+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);
- bus->fc_rcvd++;
- bus->flowcontrol = fcbits;
- }
+ return bcmerror;
+}
- /* Check and update sequence number */
- if (rxseq != seq) {
- brcmf_dbg(INFO, "rx_seq %d, expected %d\n", seq, rxseq);
- bus->rx_badseq++;
- rxseq = seq;
- }
+#ifdef BCMDBG
+static int
+brcmf_sdbrcm_readshared(struct brcmf_bus *bus, struct sdpcm_shared *sh)
+{
+ u32 addr;
+ int rv;
- /* Check window for sanity */
- if ((u8) (txmax - bus->tx_seq) > 0x40) {
- brcmf_dbg(ERROR, "unlikely tx max %d with tx_seq %d\n",
- txmax, bus->tx_seq);
- txmax = bus->tx_seq + 2;
- }
- bus->tx_max = txmax;
+ /* 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;
- /* Call a separate function for control frames */
- if (chan == SDPCM_CONTROL_CHANNEL) {
- brcmf_sdbrcm_read_control(bus, bus->rxhdr, len, doff);
- continue;
- }
+ addr = le32_to_cpu(addr);
- /* precondition: chan is either SDPCM_DATA_CHANNEL,
- SDPCM_EVENT_CHANNEL, SDPCM_TEST_CHANNEL or
- SDPCM_GLOM_CHANNEL */
+ brcmf_dbg(INFO, "sdpcm_shared address 0x%08X\n", addr);
- /* Length to read */
- rdlen = (len > firstread) ? (len - firstread) : 0;
+ /*
+ * 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;
+ }
- /* May pad read to blocksize for efficiency */
- if (bus->roundup && bus->blocksize &&
- (rdlen > bus->blocksize)) {
- pad = bus->blocksize - (rdlen % bus->blocksize);
- if ((pad <= bus->roundup) && (pad < bus->blocksize) &&
- ((rdlen + pad + firstread) < MAX_RX_DATASZ))
- rdlen += pad;
- } else if (rdlen % BRCMF_SDALIGN) {
- rdlen += BRCMF_SDALIGN - (rdlen % BRCMF_SDALIGN);
- }
+ /* Read rte_shared structure */
+ rv = brcmf_sdbrcm_membytes(bus, false, addr, (u8 *) sh,
+ sizeof(struct sdpcm_shared));
+ if (rv < 0)
+ return rv;
- /* Satisfy length-alignment requirements */
- if (forcealign && (rdlen & (ALIGNMENT - 1)))
- rdlen = roundup(rdlen, ALIGNMENT);
+ /* 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 ((rdlen + firstread) > MAX_RX_DATASZ) {
- /* Too long -- skip this frame */
- brcmf_dbg(ERROR, "too long: len %d rdlen %d\n",
- len, rdlen);
- bus->drvr->rx_errors++;
- bus->rx_toolong++;
- brcmf_sdbrcm_rxfail(bus, false, false);
- continue;
- }
+ 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;
+ }
- pkt = brcmu_pkt_buf_get_skb(rdlen + firstread + BRCMF_SDALIGN);
- if (!pkt) {
- /* Give up on data, request rtx of events */
- brcmf_dbg(ERROR, "brcmu_pkt_buf_get_skb failed: rdlen %d chan %d\n",
- rdlen, chan);
- bus->drvr->rx_dropped++;
- brcmf_sdbrcm_rxfail(bus, false, RETRYCHAN(chan));
- continue;
- }
+ return 0;
+}
- /* Leave room for what we already read, and align remainder */
- skb_pull(pkt, firstread);
- pkt_align(pkt, rdlen, BRCMF_SDALIGN);
+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;
- /* Read the remaining frame data */
- sdret = brcmf_sdcard_recv_buf(bus->sdiodev, bus->sdiodev->sbwad,
- SDIO_FUNC_2, F2SYNC, ((u8 *) (pkt->data)),
- rdlen, pkt);
- bus->f2rxdata++;
+ /* 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;
+ }
- if (sdret < 0) {
- brcmf_dbg(ERROR, "read %d %s bytes failed: %d\n", rdlen,
- ((chan == SDPCM_EVENT_CHANNEL) ? "event"
- : ((chan == SDPCM_DATA_CHANNEL) ? "data"
- : "test")), sdret);
- brcmu_pkt_buf_free_skb(pkt);
- bus->drvr->rx_errors++;
- brcmf_sdbrcm_rxfail(bus, true, RETRYCHAN(chan));
- continue;
+ /* 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(".");
- /* Copy the already-read portion */
- skb_push(pkt, firstread);
- memcpy(pkt->data, bus->rxhdr, firstread);
+ /* Decrement size and increment start address */
+ size -= read_size;
+ start += read_size;
+ databuf += read_size;
+ }
+ printk(KERN_DEBUG "Done\n");
-#ifdef BCMDBG
- if (BRCMF_BYTES_ON() && BRCMF_DATA_ON()) {
- printk(KERN_DEBUG "Rx Data:\n");
- print_hex_dump_bytes("", DUMP_PREFIX_OFFSET,
- pkt->data, len);
- }
-#endif
+ /* free buf before return !!! */
+ if (brcmf_write_to_file(bus->drvr, buf, bus->ramsize)) {
+ brcmf_dbg(ERROR, "Error writing to files\n");
+ return -1;
+ }
-deliver:
- /* Save superframe descriptor and allocate packet frame */
- if (chan == SDPCM_GLOM_CHANNEL) {
- if (SDPCM_GLOMDESC(&bus->rxhdr[SDPCM_FRAMETAG_LEN])) {
- brcmf_dbg(GLOM, "glom descriptor, %d bytes:\n",
- len);
-#ifdef BCMDBG
- if (BRCMF_GLOM_ON()) {
- printk(KERN_DEBUG "Glom Data:\n");
- print_hex_dump_bytes("",
- DUMP_PREFIX_OFFSET,
- pkt->data, len);
- }
-#endif
- __skb_trim(pkt, len);
- skb_pull(pkt, SDPCM_HDRLEN);
- bus->glomd = pkt;
- } else {
- brcmf_dbg(ERROR, "%s: glom superframe w/o "
- "descriptor!\n", __func__);
- brcmf_sdbrcm_rxfail(bus, false, false);
- }
- continue;
- }
+ /* buf free handled in brcmf_write_to_file, not here */
+ return 0;
+}
- /* Fill in packet len and prio, deliver upward */
- __skb_trim(pkt, len);
- skb_pull(pkt, doff);
+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;
- if (pkt->len == 0) {
- brcmu_pkt_buf_free_skb(pkt);
- continue;
- } else if (brcmf_proto_hdrpull(bus->drvr, &ifidx, pkt) != 0) {
- brcmf_dbg(ERROR, "rx protocol error\n");
- brcmu_pkt_buf_free_skb(pkt);
- bus->drvr->rx_errors++;
- continue;
+ 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;
}
-
- /* Unlock during rx call */
- brcmf_sdbrcm_sdunlock(bus);
- brcmf_rx_frame(bus->drvr, ifidx, pkt, 1);
- brcmf_sdbrcm_sdlock(bus);
}
- rxcount = maxframes - rxleft;
-#ifdef BCMDBG
- /* Message if we hit the limit */
- if (!rxleft)
- brcmf_dbg(DATA, "hit rx limit of %d frames\n",
- maxframes);
- else
-#endif /* BCMDBG */
- brcmf_dbg(DATA, "processed %d frames\n", rxcount);
- /* Back off rxseq if awaiting rtx, update rx_seq */
- if (bus->rxskip)
- rxseq--;
- bus->rx_seq = rxseq;
- return rxcount;
-}
+ str = kmalloc(maxstrlen, GFP_ATOMIC);
+ if (str == NULL) {
+ brcmf_dbg(ERROR, "kmalloc(%d) failed\n", maxstrlen);
+ bcmerror = -ENOMEM;
+ goto done;
+ }
-static u32 brcmf_sdbrcm_hostmail(struct brcmf_bus *bus)
-{
- u32 intstatus = 0;
- u32 hmb_data;
- u8 fcbits;
- uint retries = 0;
+ bcmerror = brcmf_sdbrcm_readshared(bus, &sdpcm_shared);
+ if (bcmerror < 0)
+ goto done;
- brcmf_dbg(TRACE, "Enter\n");
+ brcmu_binit(&strbuf, data, size);
- /* Read mailbox data and ack that we did so */
- r_sdreg32(bus, &hmb_data,
- offsetof(struct sdpcmd_regs, tohostmailboxdata), &retries);
+ brcmu_bprintf(&strbuf,
+ "msgtrace address : 0x%08X\nconsole address : 0x%08X\n",
+ sdpcm_shared.msgtrace_addr, sdpcm_shared.console_addr);
- if (retries <= retry_limit)
- w_sdreg32(bus, SMB_INT_ACK,
- offsetof(struct sdpcmd_regs, tosbmailbox), &retries);
- bus->f1regdata += 2;
+ 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");
- /* 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");
+ 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;
- bus->rxskip = false;
- intstatus |= I_HMB_FRAME_IND;
- }
+ str[maxstrlen - 1] = '\0';
+ brcmu_bprintf(&strbuf, " expr \"%s\"", str);
+ }
- /*
- * 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);
- else
- brcmf_dbg(INFO, "Dongle ready, protocol version %d\n",
- bus->sdpcm_ver);
- }
+ 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;
- /*
- * 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;
+ str[maxstrlen - 1] = '\0';
+ brcmu_bprintf(&strbuf, " file \"%s\"", str);
+ }
- if (fcbits & ~bus->flowcontrol)
- bus->fc_xoff++;
+ brcmu_bprintf(&strbuf, " line %d ",
+ sdpcm_shared.assert_line);
+ }
- if (bus->flowcontrol & ~fcbits)
- bus->fc_xon++;
+ 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;
- bus->fc_rcvd++;
- bus->flowcontrol = fcbits;
+ 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);
+ }
}
- /* 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);
+ if (sdpcm_shared.flags & (SDPCM_SHARED_ASSERT | SDPCM_SHARED_TRAP))
+ brcmf_dbg(ERROR, "%s\n", strbuf.origbuf);
- return intstatus;
+#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 bool brcmf_sdbrcm_dpc(struct brcmf_bus *bus)
+#define CONSOLE_LINE_MAX 192
+
+static int brcmf_sdbrcm_readconsole(struct brcmf_bus *bus)
{
- u32 intstatus, newstatus = 0;
- uint retries = 0;
- uint rxlimit = brcmf_rxbound; /* Rx frames to read before resched */
- uint txlimit = brcmf_txbound; /* Tx frames to send before resched */
- uint framecnt = 0; /* Temporary counter of tx/rx frames */
- bool rxdone = true; /* Flag for no more read data */
- bool resched = false; /* Flag indicating resched wanted */
+ struct brcmf_console *c = &bus->console;
+ u8 line[CONSOLE_LINE_MAX], ch;
+ u32 n, idx, addr;
+ int rv;
- brcmf_dbg(TRACE, "Enter\n");
+ /* Don't do anything until FWREADY updates console address */
+ if (bus->console_addr == 0)
+ return 0;
- /* Start with leftover status bits */
- intstatus = bus->intstatus;
+ /* 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;
- brcmf_sdbrcm_sdlock(bus);
+ /* 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;
+ }
- /* If waiting for HTAVAIL, check status */
- if (bus->clkstate == CLK_PENDING) {
- int err;
- u8 clkctl, devctl = 0;
+ idx = le32_to_cpu(c->log.idx);
-#ifdef BCMDBG
- /* Check for inconsistent device control */
- devctl = brcmf_sdcard_cfg_read(bus->sdiodev, SDIO_FUNC_1,
- SBSDIO_DEVICE_CTL, &err);
- if (err) {
- brcmf_dbg(ERROR, "error reading DEVCTL: %d\n", err);
- bus->drvr->busstate = BRCMF_BUS_DOWN;
- }
-#endif /* BCMDBG */
+ /* Protect against corrupt value */
+ if (idx > c->bufsize)
+ return -EBADE;
- /* Read CSR, if clock on switch to AVAIL, else ignore */
- clkctl = brcmf_sdcard_cfg_read(bus->sdiodev, SDIO_FUNC_1,
- SBSDIO_FUNC1_CHIPCLKCSR, &err);
- if (err) {
- brcmf_dbg(ERROR, "error reading CSR: %d\n",
- err);
- bus->drvr->busstate = BRCMF_BUS_DOWN;
- }
+ /* Skip reading the console buffer if the index pointer
+ has not moved */
+ if (idx == c->last)
+ return 0;
- brcmf_dbg(INFO, "DPC: PENDING, devctl 0x%02x clkctl 0x%02x\n",
- devctl, clkctl);
+ /* 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;
- if (SBSDIO_HTAV(clkctl)) {
- devctl = brcmf_sdcard_cfg_read(bus->sdiodev,
- SDIO_FUNC_1,
- SBSDIO_DEVICE_CTL, &err);
- if (err) {
- brcmf_dbg(ERROR, "error reading DEVCTL: %d\n",
- err);
- bus->drvr->busstate = BRCMF_BUS_DOWN;
- }
- devctl &= ~SBSDIO_DEVCTL_CA_INT_ONLY;
- brcmf_sdcard_cfg_write(bus->sdiodev, SDIO_FUNC_1,
- SBSDIO_DEVICE_CTL, devctl, &err);
- if (err) {
- brcmf_dbg(ERROR, "error writing DEVCTL: %d\n",
- err);
- bus->drvr->busstate = BRCMF_BUS_DOWN;
+ 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;
}
- bus->clkstate = CLK_AVAIL;
- } else {
- goto clkwait;
+ ch = c->buf[c->last];
+ c->last = (c->last + 1) % c->bufsize;
+ if (ch == '\n')
+ break;
+ line[n] = ch;
}
- }
-
- bus_wake(bus);
-
- /* Make sure backplane clock is on */
- brcmf_sdbrcm_clkctl(bus, CLK_AVAIL, true);
- if (bus->clkstate == CLK_PENDING)
- goto clkwait;
- /* Pending interrupt indicates new device status */
- if (bus->ipend) {
- bus->ipend = false;
- r_sdreg32(bus, &newstatus,
- offsetof(struct sdpcmd_regs, intstatus), &retries);
- bus->f1regdata++;
- if (brcmf_sdcard_regfail(bus->sdiodev))
- newstatus = 0;
- newstatus &= bus->hostintmask;
- bus->fcstate = !!(newstatus & I_HMB_FC_STATE);
- if (newstatus) {
- w_sdreg32(bus, newstatus,
- offsetof(struct sdpcmd_regs, intstatus),
- &retries);
- bus->f1regdata++;
+ if (n > 0) {
+ if (line[n - 1] == '\r')
+ n--;
+ line[n] = 0;
+ printk(KERN_DEBUG "CONSOLE: %s\n", line);
}
}
+break2:
- /* Merge new bits with previous */
- intstatus |= newstatus;
- bus->intstatus = 0;
+ return 0;
+}
+#endif /* BCMDBG */
- /* Handle flow-control change: read new state in case our ack
- * crossed another change interrupt. If change still set, assume
- * FC ON for safety, let next loop through do the debounce.
- */
- if (intstatus & I_HMB_FC_CHANGE) {
- intstatus &= ~I_HMB_FC_CHANGE;
- w_sdreg32(bus, I_HMB_FC_CHANGE,
- offsetof(struct sdpcmd_regs, intstatus), &retries);
+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;
- r_sdreg32(bus, &newstatus,
- offsetof(struct sdpcmd_regs, intstatus), &retries);
- bus->f1regdata += 2;
- bus->fcstate =
- !!(newstatus & (I_HMB_FC_STATE | I_HMB_FC_CHANGE));
- intstatus |= (newstatus & bus->hostintmask);
- }
+ brcmf_dbg(TRACE, "Enter\n");
- /* Handle host mailbox indication */
- if (intstatus & I_HMB_HOST_INT) {
- intstatus &= ~I_HMB_HOST_INT;
- intstatus |= brcmf_sdbrcm_hostmail(bus);
- }
+ if (bus->drvr->dongle_reset)
+ return -EIO;
- /* Generally don't ask for these, can get CRC errors... */
- if (intstatus & I_WR_OOSYNC) {
- brcmf_dbg(ERROR, "Dongle reports WR_OOSYNC\n");
- intstatus &= ~I_WR_OOSYNC;
- }
+ /* Back the pointer to make a room for bus header */
+ frame = msg - SDPCM_HDRLEN;
+ len = (msglen += SDPCM_HDRLEN);
- if (intstatus & I_RD_OOSYNC) {
- brcmf_dbg(ERROR, "Dongle reports RD_OOSYNC\n");
- intstatus &= ~I_RD_OOSYNC;
+ /* 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;
- if (intstatus & I_SBINT) {
- brcmf_dbg(ERROR, "Dongle reports SBINT\n");
- intstatus &= ~I_SBINT;
+ /* 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);
}
- /* Would be active due to wake-wlan in gSPI */
- if (intstatus & I_CHIPACTIVE) {
- brcmf_dbg(INFO, "Dongle reports CHIPACTIVE\n");
- intstatus &= ~I_CHIPACTIVE;
- }
+ /* Satisfy length-alignment requirements */
+ if (forcealign && (len & (ALIGNMENT - 1)))
+ len = roundup(len, ALIGNMENT);
- /* Ignore frame indications if rxskip is set */
- if (bus->rxskip)
- intstatus &= ~I_HMB_FRAME_IND;
+ /* precondition: IS_ALIGNED((unsigned long)frame, 2) */
- /* On frame indication, read available frames */
- if (PKT_AVAILABLE()) {
- framecnt = brcmf_sdbrcm_readframes(bus, rxlimit, &rxdone);
- if (rxdone || bus->rxskip)
- intstatus &= ~I_HMB_FRAME_IND;
- rxlimit -= min(framecnt, rxlimit);
- }
+ /* Need to lock here to protect txseq and SDIO tx calls */
+ brcmf_sdbrcm_sdlock(bus);
- /* Keep still-pending events for next scheduling */
- bus->intstatus = intstatus;
+ bus_wake(bus);
-clkwait:
- if (data_ok(bus) && bus->ctrl_frame_stat &&
- (bus->clkstate == CLK_AVAIL)) {
- int ret, i;
+ /* Make sure backplane clock is on */
+ brcmf_sdbrcm_clkctl(bus, CLK_AVAIL, false);
- ret = brcmf_sdbrcm_send_buf(bus, bus->sdiodev->sbwad,
- SDIO_FUNC_2, F2SYNC, (u8 *) bus->ctrl_frame_buf,
- (u32) bus->ctrl_frame_len, NULL);
+ /* 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);
- 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++;
+ /* 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));
- brcmf_sdcard_abort(bus->sdiodev, SDIO_FUNC_2);
+ 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_sdcard_cfg_write(bus->sdiodev, SDIO_FUNC_1,
- SBSDIO_FUNC1_FRAMECTRL, SFC_WF_TERM,
- NULL);
- bus->f1regdata++;
+ brcmf_sdbrcm_wait_for_event(bus, &bus->ctrl_frame_stat);
- 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 (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));
}
- if (ret == 0)
- bus->tx_seq = (bus->tx_seq + 1) % SDPCM_SEQUENCE_WRAP;
+#endif
- brcmf_dbg(INFO, "Return_dpc value is : %d\n", ret);
- bus->ctrl_frame_stat = false;
- brcmf_sdbrcm_wait_event_wakeup(bus);
- }
- /* Send queued frames (limit 1 if rx may still be pending) */
- else if ((bus->clkstate == CLK_AVAIL) && !bus->fcstate &&
- brcmu_pktq_mlen(&bus->txq, ~bus->flowcontrol) && txlimit
- && data_ok(bus)) {
- framecnt = rxdone ? txlimit : min(txlimit, brcmf_txminmax);
- framecnt = brcmf_sdbrcm_sendfromq(bus, framecnt);
- txlimit -= framecnt;
- }
+ 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;
+ }
- /* Resched if events or tx frames are pending,
- else await next interrupt */
- /* On failed register access, all bets are off:
- no resched or interrupts */
- if ((bus->drvr->busstate == BRCMF_BUS_DOWN) ||
- brcmf_sdcard_regfail(bus->sdiodev)) {
- brcmf_dbg(ERROR, "failed backplane access over SDIO, halting operation %d\n",
- brcmf_sdcard_regfail(bus->sdiodev));
- bus->drvr->busstate = BRCMF_BUS_DOWN;
- bus->intstatus = 0;
- } else if (bus->clkstate == CLK_PENDING) {
- brcmf_dbg(INFO, "rescheduled due to CLK_PENDING awaiting I_CHIPACTIVE interrupt\n");
- resched = true;
- } else if (bus->intstatus || bus->ipend ||
- (!bus->fcstate && brcmu_pktq_mlen(&bus->txq, ~bus->flowcontrol)
- && data_ok(bus)) || PKT_AVAILABLE()) {
- resched = true;
- }
+ }
+ if (ret == 0)
+ bus->tx_seq =
+ (bus->tx_seq + 1) % SDPCM_SEQUENCE_WRAP;
- bus->dpc_sched = resched;
+ } while ((ret < 0) && retries++ < TXRETRIES);
+ }
- /* If we're done for now, turn off clock request. */
- if ((bus->clkstate != CLK_PENDING)
- && bus->idletime == BRCMF_IDLE_IMMEDIATE) {
+ if ((bus->idletime == BRCMF_IDLE_IMMEDIATE) && !bus->dpc_sched) {
bus->activity = false;
- brcmf_sdbrcm_clkctl(bus, CLK_NONE, false);
+ brcmf_sdbrcm_clkctl(bus, CLK_NONE, true);
}
brcmf_sdbrcm_sdunlock(bus);
- return resched;
+ if (ret)
+ bus->drvr->tx_ctlerrs++;
+ else
+ bus->drvr->tx_ctlpkts++;
+
+ return ret ? -EIO : 0;
}
-void brcmf_sdbrcm_isr(void *arg)
+int
+brcmf_sdbrcm_bus_rxctl(struct brcmf_bus *bus, unsigned char *msg, uint msglen)
{
- struct brcmf_bus *bus = (struct brcmf_bus *) arg;
+ int timeleft;
+ uint rxlen = 0;
+ bool pending;
brcmf_dbg(TRACE, "Enter\n");
- if (!bus) {
- brcmf_dbg(ERROR, "bus is null pointer, exiting\n");
- return;
- }
+ if (bus->drvr->dongle_reset)
+ return -EIO;
- 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;
+ /* Wait until control frame is available */
+ timeleft = brcmf_sdbrcm_ioctl_resp_wait(bus, &bus->rxlen, &pending);
- /* Shouldn't get this interrupt if we're sleeping? */
- if (bus->sleeping) {
- brcmf_dbg(ERROR, "INTERRUPT WHILE SLEEPING??\n");
- return;
+ 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 */
}
- /* Disable additional interrupts (is this needed now)? */
- if (!bus->intr)
- brcmf_dbg(ERROR, "isr w/o interrupt configured!\n");
+ if (rxlen)
+ bus->drvr->rx_ctlpkts++;
+ else
+ bus->drvr->rx_ctlerrs++;
- bus->dpc_sched = true;
- brcmf_sdbrcm_sched_dpc(bus);
+ return rxlen ? (int)rxlen : -ETIMEDOUT;
}
-static bool brcmf_sdbrcm_bus_watchdog(struct brcmf_pub *drvr)
+static int brcmf_sdbrcm_downloadvars(struct brcmf_bus *bus, void *arg, int len)
{
- struct brcmf_bus *bus;
+ int bcmerror = 0;
- brcmf_dbg(TIMER, "Enter\n");
+ brcmf_dbg(TRACE, "Enter\n");
- bus = drvr->bus;
+ /* Basic sanity checks */
+ if (bus->drvr->up) {
+ bcmerror = -EISCONN;
+ goto err;
+ }
+ if (!len) {
+ bcmerror = -EOVERFLOW;
+ goto err;
+ }
- if (bus->drvr->dongle_reset)
- return false;
+ /* Free the old ones and replace with passed variables */
+ kfree(bus->vars);
- /* Ignore the timer if simulating bus down */
- if (bus->sleeping)
- return false;
+ bus->vars = kmalloc(len, GFP_ATOMIC);
+ bus->varsz = bus->vars ? len : 0;
+ if (bus->vars == NULL) {
+ bcmerror = -ENOMEM;
+ goto err;
+ }
- brcmf_sdbrcm_sdlock(bus);
+ /* Copy the passed variables, which should include the
+ terminating double-null */
+ memcpy(bus->vars, arg, bus->varsz);
+err:
+ return bcmerror;
+}
- /* Poll period: check device if appropriate. */
- if (bus->poll && (++bus->polltick >= bus->pollrate)) {
- u32 intstatus = 0;
+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 */
- /* Reset poll tick */
- bus->polltick = 0;
+ /* 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;
- /* Check device if no interrupts */
- if (!bus->intr || (bus->intrcount == bus->lastintrs)) {
+ if (bus->vars) {
+ vbuffer = kzalloc(varsize, GFP_ATOMIC);
+ if (!vbuffer)
+ return -ENOMEM;
- 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);
- }
+ memcpy(vbuffer, bus->vars, bus->varsz);
- /* If there is something, make like the ISR and
- schedule the DPC */
- if (intstatus) {
- bus->pollcnt++;
- bus->ipend = true;
+ /* 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;
- bus->dpc_sched = true;
- brcmf_sdbrcm_sched_dpc(bus);
+ /* 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");
- /* 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 */
- }
- }
+ kfree(nvram_ularray);
#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);
- }
- }
+ 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_sdbrcm_sdunlock(bus);
+ brcmf_dbg(INFO, "New varsize is %d, length token=0x%08x\n",
+ varsize, varsizew);
- return bus->ipend;
-}
+ /* Write the length token to the last word */
+ bcmerror = brcmf_sdbrcm_membytes(bus, true, (bus->orig_ramsize - 4),
+ (u8 *)&varsizew, 4);
-static bool brcmf_sdbrcm_chipmatch(u16 chipid)
-{
- if (chipid == BCM4329_CHIP_ID)
- return true;
- return false;
+ return bcmerror;
}
-void *brcmf_sdbrcm_probe(u16 bus_no, u16 slot, u16 func, uint bustype,
- u32 regsva, struct brcmf_sdio_dev *sdiodev)
+static void
+brcmf_sdbrcm_chip_disablecore(struct brcmf_sdio_dev *sdiodev, u32 corebase)
{
- int ret;
- struct brcmf_bus *bus;
+ u32 regdata;
- /* 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;
+ regdata = brcmf_sdcard_reg_read(sdiodev,
+ CORE_SB(corebase, sbtmstatelow), 4);
+ if (regdata & SBTML_RESET)
+ return;
- forcealign = true;
+ 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);
- brcmf_c_init();
+ 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);
- brcmf_dbg(TRACE, "Enter\n");
+ regdata = brcmf_sdcard_reg_read(sdiodev,
+ CORE_SB(corebase, sbtmstatehigh), 4);
+ if (regdata & SBTMH_BUSY)
+ brcmf_dbg(ERROR, "ARM core still busy\n");
- /* We make an assumption about address window mappings:
- * regsva == SI_ENUM_BASE*/
+ 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);
+ }
- /* 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 */
+ /* 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);
- /* attempt to attach to the dongle */
- if (!(brcmf_sdbrcm_probe_attach(bus, regsva))) {
- brcmf_dbg(ERROR, "brcmf_sdbrcm_probe_attach failed\n");
- goto fail;
+ /* 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);
+ }
}
- spin_lock_init(&bus->txqlock);
- init_waitqueue_head(&bus->ctrl_wait);
- init_waitqueue_head(&bus->ioctl_resp_wait);
+ /* leave reset and reject asserted */
+ brcmf_sdcard_reg_write(sdiodev, CORE_SB(corebase, sbtmstatelow), 4,
+ (SBTML_REJ | SBTML_RESET));
+ udelay(1);
+}
- /* Set up the watchdog timer */
- init_timer(&bus->timer);
- bus->timer.data = (unsigned long)bus;
- bus->timer.function = brcmf_sdbrcm_watchdog;
+static void
+brcmf_sdbrcm_chip_resetcore(struct brcmf_sdio_dev *sdiodev, u32 corebase)
+{
+ u32 regdata;
- /* 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);
- }
+ /*
+ * Must do the disable sequence first to work for
+ * arbitrary current core state.
+ */
+ brcmf_sdbrcm_chip_disablecore(sdiodev, corebase);
- 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;
+ /*
+ * 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);
- /* 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;
- }
+ 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);
- /* 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;
- }
+ 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));
- /* Allocate buffers */
- if (!(brcmf_sdbrcm_probe_malloc(bus))) {
- brcmf_dbg(ERROR, "brcmf_sdbrcm_probe_malloc failed\n");
- goto fail;
- }
+ /* 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 (!(brcmf_sdbrcm_probe_init(bus))) {
- brcmf_dbg(ERROR, "brcmf_sdbrcm_probe_init failed\n");
- goto fail;
- }
+ /* leave clock enabled */
+ brcmf_sdcard_reg_write(sdiodev, CORE_SB(corebase, sbtmstatelow), 4,
+ (SICF_CLOCK_EN << SBTML_SICF_SHIFT));
+ udelay(1);
+}
- /* 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");
+static int brcmf_sdbrcm_download_state(struct brcmf_bus *bus, bool enter)
+{
+ uint retries;
+ u32 regdata;
+ int bcmerror = 0;
- brcmf_dbg(INFO, "completed!!\n");
+ /* 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;
- /* 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");
+ 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;
}
- }
- /* 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;
+ 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:
- brcmf_sdbrcm_release(bus);
- return NULL;
+ return bcmerror;
}
-static bool
-brcmf_sdbrcm_probe_attach(struct brcmf_bus *bus, u32 regsva)
+static int brcmf_sdbrcm_get_image(char *buf, int len, struct brcmf_bus *bus)
{
- 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 (bus->firmware->size < bus->fw_ptr + len)
+ len = bus->firmware->size - bus->fw_ptr;
-#ifdef BCMDBG
- printk(KERN_DEBUG "F1 signature read @0x18000000=0x%4x\n",
- brcmf_sdcard_reg_read(bus->sdiodev, SI_ENUM_BASE, 4));
+ memcpy(buf, &bus->firmware->data[bus->fw_ptr], len);
+ bus->fw_ptr += len;
+ return len;
+}
-#endif /* BCMDBG */
+MODULE_FIRMWARE(BCM4329_FW_NAME);
+MODULE_FIRMWARE(BCM4329_NV_NAME);
- /*
- * Force PLL off until brcmf_sdbrcm_chip_attach()
- * programs PLL control regs
- */
+static int brcmf_sdbrcm_download_code_file(struct brcmf_bus *bus)
+{
+ int offset = 0;
+ uint len;
+ u8 *memblock = NULL, *memptr;
+ int ret;
- 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);
+ brcmf_dbg(INFO, "Enter\n");
- 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;
+ bus->fw_name = BCM4329_FW_NAME;
+ ret = request_firmware(&bus->firmware, bus->fw_name,
+ &bus->sdiodev->func[2]->dev);
+ if (ret) {
+ brcmf_dbg(ERROR, "Fail to request firmware %d\n", ret);
+ return ret;
}
+ bus->fw_ptr = 0;
- if (brcmf_sdbrcm_chip_attach(bus, regsva)) {
- brcmf_dbg(ERROR, "brcmf_sdbrcm_chip_attach failed!\n");
- goto fail;
+ memptr = memblock = kmalloc(MEMBLOCK + BRCMF_SDALIGN, GFP_ATOMIC);
+ if (memblock == NULL) {
+ brcmf_dbg(ERROR, "Failed to allocate memory %d bytes\n",
+ MEMBLOCK);
+ ret = -ENOMEM;
+ goto err;
}
+ if ((u32)(unsigned long)memblock % BRCMF_SDALIGN)
+ memptr += (BRCMF_SDALIGN -
+ ((u32)(unsigned long)memblock % BRCMF_SDALIGN));
- if (!brcmf_sdbrcm_chipmatch((u16) bus->ci->chip)) {
- brcmf_dbg(ERROR, "unsupported chip: 0x%04x\n", bus->ci->chip);
- goto fail;
+ /* Download image */
+ while ((len =
+ brcmf_sdbrcm_get_image((char *)memptr, MEMBLOCK, bus))) {
+ ret = brcmf_sdbrcm_membytes(bus, true, offset, memptr, len);
+ if (ret) {
+ brcmf_dbg(ERROR, "error %d on writing %d membytes at 0x%08x\n",
+ ret, MEMBLOCK, offset);
+ goto err;
+ }
+
+ offset += MEMBLOCK;
}
- brcmf_sdbrcm_sdiod_drive_strength_init(bus, brcmf_sdiod_drive_strength);
+err:
+ kfree(memblock);
- /* 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);
+ release_firmware(bus->firmware);
+ bus->fw_ptr = 0;
- brcmf_dbg(ERROR, "DHD: dongle ram size is set to %d(orig %d)\n",
- bus->ramsize, bus->orig_ramsize);
+ return ret;
+}
- /* 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);
+/*
+ * ProcessVars:Takes a buffer of "<var>=<value>\n" lines read from a file
+ * and ending in a NUL.
+ * Removes carriage returns, empty lines, comment lines, and converts
+ * newlines to NULs.
+ * Shortens buffer as needed and pads with NULs. End of buffer is marked
+ * by two NULs.
+*/
- brcmu_pktq_init(&bus->txq, (PRIOMASK + 1), TXQLEN);
+static uint brcmf_process_nvram_vars(char *varbuf, uint len)
+{
+ char *dp;
+ bool findNewline;
+ int column;
+ uint buf_len, n;
- /* Locate an appropriately-aligned portion of hdrbuf */
- bus->rxhdr = (u8 *) roundup((unsigned long)&bus->hdrbuf[0],
- BRCMF_SDALIGN);
+ dp = varbuf;
- /* Set the poll and/or interrupt flags */
- bus->intr = (bool) brcmf_intr;
- bus->poll = (bool) brcmf_poll;
- if (bus->poll)
- bus->pollrate = 1;
+ findNewline = false;
+ column = 0;
- return true;
+ for (n = 0; n < len; n++) {
+ if (varbuf[n] == 0)
+ break;
+ if (varbuf[n] == '\r')
+ continue;
+ if (findNewline && varbuf[n] != '\n')
+ continue;
+ findNewline = false;
+ if (varbuf[n] == '#') {
+ findNewline = true;
+ continue;
+ }
+ if (varbuf[n] == '\n') {
+ if (column == 0)
+ continue;
+ *dp++ = 0;
+ column = 0;
+ continue;
+ }
+ *dp++ = varbuf[n];
+ column++;
+ }
+ buf_len = dp - varbuf;
-fail:
- return false;
+ while (dp < varbuf + n)
+ *dp++ = 0;
+
+ return buf_len;
}
-static bool brcmf_sdbrcm_probe_malloc(struct brcmf_bus *bus)
+static int brcmf_sdbrcm_download_nvram(struct brcmf_bus *bus)
{
- brcmf_dbg(TRACE, "Enter\n");
+ uint len;
+ char *memblock = NULL;
+ char *bufp;
+ int ret;
- 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;
- }
+ bus->nv_name = BCM4329_NV_NAME;
+ ret = request_firmware(&bus->firmware, bus->nv_name,
+ &bus->sdiodev->func[2]->dev);
+ if (ret) {
+ brcmf_dbg(ERROR, "Fail to request nvram %d\n", ret);
+ return ret;
}
+ bus->fw_ptr = 0;
- /* 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;
+ memblock = kmalloc(MEMBLOCK, GFP_ATOMIC);
+ if (memblock == NULL) {
+ brcmf_dbg(ERROR, "Failed to allocate memory %d bytes\n",
+ MEMBLOCK);
+ ret = -ENOMEM;
+ goto err;
}
- /* 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;
+ len = brcmf_sdbrcm_get_image(memblock, MEMBLOCK, bus);
+
+ if (len > 0 && len < MEMBLOCK) {
+ bufp = (char *)memblock;
+ bufp[len] = 0;
+ len = brcmf_process_nvram_vars(bufp, len);
+ bufp += len;
+ *bufp++ = 0;
+ if (len)
+ ret = brcmf_sdbrcm_downloadvars(bus, memblock, len + 1);
+ if (ret)
+ brcmf_dbg(ERROR, "error downloading vars: %d\n", ret);
+ } else {
+ brcmf_dbg(ERROR, "error reading nvram file: %d\n", len);
+ ret = -EIO;
+ }
+
+err:
+ kfree(memblock);
- return true;
+ release_firmware(bus->firmware);
+ bus->fw_ptr = 0;
-fail:
- return false;
+ return ret;
}
-static bool brcmf_sdbrcm_probe_init(struct brcmf_bus *bus)
+static int _brcmf_sdbrcm_download_firmware(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);
+ int bcmerror = -1;
- bus->drvr->busstate = BRCMF_BUS_DOWN;
- bus->sleeping = false;
- bus->rxflow = false;
+ /* Keep arm in reset */
+ if (brcmf_sdbrcm_download_state(bus, true)) {
+ brcmf_dbg(ERROR, "error placing ARM core in reset\n");
+ goto err;
+ }
- /* Done with backplane-dependent accesses, can drop clock... */
- brcmf_sdcard_cfg_write(bus->sdiodev, SDIO_FUNC_1,
- SBSDIO_FUNC1_CHIPCLKCSR, 0, NULL);
+ /* External image takes precedence if specified */
+ if (brcmf_sdbrcm_download_code_file(bus)) {
+ brcmf_dbg(ERROR, "dongle image file download failed\n");
+ goto err;
+ }
- /* ...and initialize clock/power states */
- bus->clkstate = CLK_SDONLY;
- bus->idletime = (s32) brcmf_idletime;
- bus->idleclock = BRCMF_IDLE_ACTIVE;
+ /* External nvram takes precedence if specified */
+ if (brcmf_sdbrcm_download_nvram(bus))
+ brcmf_dbg(ERROR, "dongle nvram file download failed\n");
- /* Query the F2 block size, set roundup accordingly */
- bus->blocksize = bus->sdiodev->func[2]->cur_blksize;
- bus->roundup = min(max_roundup, bus->blocksize);
+ /* Take arm out of reset */
+ if (brcmf_sdbrcm_download_state(bus, false)) {
+ brcmf_dbg(ERROR, "error getting out of ARM core reset\n");
+ goto err;
+ }
- /* bus module does not support packet chaining */
- bus->use_rxchain = false;
- bus->sd_rxchain = false;
+ bcmerror = 0;
- return true;
+err:
+ return bcmerror;
}
static bool
return ret;
}
-/* Detach and free everything */
-static void brcmf_sdbrcm_release(struct brcmf_bus *bus)
+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 (bus) {
- /* De-register interrupt handler */
- brcmf_sdcard_intr_dereg(bus->sdiodev);
+ if (enforce_mutex)
+ brcmf_sdbrcm_sdlock(bus);
- if (bus->drvr) {
- brcmf_detach(bus->drvr);
- brcmf_sdbrcm_release_dongle(bus);
- bus->drvr = NULL;
- }
+ bus_wake(bus);
- brcmf_sdbrcm_release_malloc(bus);
+ /* Enable clock for device interrupts */
+ brcmf_sdbrcm_clkctl(bus, CLK_AVAIL, false);
- kfree(bus);
+ if (bus->watchdog_tsk) {
+ send_sig(SIGTERM, bus->watchdog_tsk, 1);
+ kthread_stop(bus->watchdog_tsk);
+ bus->watchdog_tsk = NULL;
}
- brcmf_dbg(TRACE, "Disconnected\n");
-}
+ 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);
-static void brcmf_sdbrcm_release_malloc(struct brcmf_bus *bus)
-{
- brcmf_dbg(TRACE, "Enter\n");
+ /* 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;
- if (bus->drvr && bus->drvr->dongle_reset)
- return;
+ /* Change our idea of bus state */
+ bus->drvr->busstate = BRCMF_BUS_DOWN;
- kfree(bus->rxbuf);
- bus->rxctl = bus->rxbuf = NULL;
+ /* 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);
- kfree(bus->databuf);
- bus->databuf = NULL;
+ /* 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_release_dongle(struct brcmf_bus *bus)
+int brcmf_sdbrcm_bus_init(struct brcmf_pub *drvr, bool enforce_mutex)
{
- brcmf_dbg(TRACE, "Enter\n");
+ struct brcmf_bus *bus = drvr->bus;
+ unsigned long timeout;
+ uint retries = 0;
+ u8 ready, enable;
+ int err, ret = 0;
+ u8 saveclk;
- if (bus->drvr && bus->drvr->dongle_reset)
- return;
+ brcmf_dbg(TRACE, "Enter\n");
- 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;
+ /* try to download image and nvram to the dongle */
+ if (drvr->busstate == BRCMF_BUS_DOWN) {
+ if (!(brcmf_sdbrcm_download_firmware(bus)))
+ return -1;
}
- brcmf_dbg(TRACE, "Disconnected\n");
-}
+ if (!bus->drvr)
+ return 0;
-void brcmf_sdbrcm_disconnect(void *ptr)
-{
- struct brcmf_bus *bus = (struct brcmf_bus *)ptr;
+ /* Start the watchdog timer */
+ bus->drvr->tickcnt = 0;
+ brcmf_sdbrcm_wd_timer(bus, brcmf_watchdog_ms);
- brcmf_dbg(TRACE, "Enter\n");
+ if (enforce_mutex)
+ brcmf_sdbrcm_sdlock(bus);
- if (bus)
- brcmf_sdbrcm_release(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;
- brcmf_dbg(TRACE, "Disconnected\n");
-}
+ /* 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;
+ }
-int brcmf_bus_register(void)
-{
- brcmf_dbg(TRACE, "Enter\n");
+ /* 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);
- /* 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;
+ brcmf_sdcard_cfg_write(bus->sdiodev, SDIO_FUNC_0, SDIO_CCCR_IOEx,
+ enable, NULL);
- /* If both watchdog and DPC are threads, TX must be deferred */
- if ((brcmf_watchdog_prio >= 0) && (brcmf_dpc_prio >= 0)
- && brcmf_deferred_tx)
+ 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(ERROR, "Invalid module parameters.\n");
- return -EINVAL;
- } while (0);
+ 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);
- return brcmf_sdio_register();
-}
+ /* If we didn't come up, turn off backplane clock */
+ if (drvr->busstate != BRCMF_BUS_DATA)
+ brcmf_sdbrcm_clkctl(bus, CLK_NONE, false);
-void brcmf_bus_unregister(void)
-{
- brcmf_dbg(TRACE, "Enter\n");
+exit:
+ if (enforce_mutex)
+ brcmf_sdbrcm_sdunlock(bus);
- brcmf_sdio_unregister();
+ return ret;
}
-struct device *brcmf_bus_get_device(struct brcmf_bus *bus)
+void brcmf_sdbrcm_isr(void *arg)
{
- return &bus->sdiodev->func[2]->dev;
-}
+ struct brcmf_bus *bus = (struct brcmf_bus *) arg;
-static int brcmf_sdbrcm_download_code_file(struct brcmf_bus *bus)
-{
- int offset = 0;
- uint len;
- u8 *memblock = NULL, *memptr;
- int ret;
+ brcmf_dbg(TRACE, "Enter\n");
- brcmf_dbg(INFO, "Enter\n");
+ if (!bus) {
+ brcmf_dbg(ERROR, "bus is null pointer, exiting\n");
+ return;
+ }
- bus->fw_name = BCM4329_FW_NAME;
- ret = request_firmware(&bus->firmware, bus->fw_name,
- &bus->sdiodev->func[2]->dev);
- if (ret) {
- brcmf_dbg(ERROR, "Fail to request firmware %d\n", ret);
- return ret;
+ if (bus->drvr->busstate == BRCMF_BUS_DOWN) {
+ brcmf_dbg(ERROR, "bus is down. we have nothing to do\n");
+ return;
}
- bus->fw_ptr = 0;
+ /* Count the interrupt call */
+ bus->intrcount++;
+ bus->ipend = true;
- memptr = memblock = kmalloc(MEMBLOCK + BRCMF_SDALIGN, GFP_ATOMIC);
- if (memblock == NULL) {
- brcmf_dbg(ERROR, "Failed to allocate memory %d bytes\n",
- MEMBLOCK);
- ret = -ENOMEM;
- goto err;
+ /* Shouldn't get this interrupt if we're sleeping? */
+ if (bus->sleeping) {
+ brcmf_dbg(ERROR, "INTERRUPT WHILE SLEEPING??\n");
+ return;
}
- if ((u32)(unsigned long)memblock % BRCMF_SDALIGN)
- memptr += (BRCMF_SDALIGN -
- ((u32)(unsigned long)memblock % BRCMF_SDALIGN));
- /* Download image */
- while ((len =
- brcmf_sdbrcm_get_image((char *)memptr, MEMBLOCK, bus))) {
- ret = brcmf_sdbrcm_membytes(bus, true, offset, memptr, len);
- if (ret) {
- brcmf_dbg(ERROR, "error %d on writing %d membytes at 0x%08x\n",
- ret, MEMBLOCK, offset);
- goto err;
- }
+ /* Disable additional interrupts (is this needed now)? */
+ if (!bus->intr)
+ brcmf_dbg(ERROR, "isr w/o interrupt configured!\n");
- offset += MEMBLOCK;
- }
+ bus->dpc_sched = true;
+ brcmf_sdbrcm_sched_dpc(bus);
+}
-err:
- kfree(memblock);
+static bool brcmf_sdbrcm_bus_watchdog(struct brcmf_pub *drvr)
+{
+ struct brcmf_bus *bus;
- release_firmware(bus->firmware);
- bus->fw_ptr = 0;
+ brcmf_dbg(TIMER, "Enter\n");
- return ret;
-}
+ bus = drvr->bus;
-/*
- * ProcessVars:Takes a buffer of "<var>=<value>\n" lines read from a file
- * and ending in a NUL.
- * Removes carriage returns, empty lines, comment lines, and converts
- * newlines to NULs.
- * Shortens buffer as needed and pads with NULs. End of buffer is marked
- * by two NULs.
-*/
+ if (bus->drvr->dongle_reset)
+ return false;
-static uint brcmf_process_nvram_vars(char *varbuf, uint len)
-{
- char *dp;
- bool findNewline;
- int column;
- uint buf_len, n;
+ /* Ignore the timer if simulating bus down */
+ if (bus->sleeping)
+ return false;
- dp = varbuf;
+ brcmf_sdbrcm_sdlock(bus);
- findNewline = false;
- column = 0;
+ /* Poll period: check device if appropriate. */
+ if (bus->poll && (++bus->polltick >= bus->pollrate)) {
+ u32 intstatus = 0;
- for (n = 0; n < len; n++) {
- if (varbuf[n] == 0)
- break;
- if (varbuf[n] == '\r')
- continue;
- if (findNewline && varbuf[n] != '\n')
- continue;
- findNewline = false;
- if (varbuf[n] == '#') {
- findNewline = true;
- continue;
- }
- if (varbuf[n] == '\n') {
- if (column == 0)
- continue;
- *dp++ = 0;
- column = 0;
- continue;
- }
- *dp++ = varbuf[n];
- column++;
- }
- buf_len = dp - varbuf;
+ /* Reset poll tick */
+ bus->polltick = 0;
- while (dp < varbuf + n)
- *dp++ = 0;
+ /* Check device if no interrupts */
+ if (!bus->intr || (bus->intrcount == bus->lastintrs)) {
- return buf_len;
-}
+ 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);
+ }
-static int brcmf_sdbrcm_download_nvram(struct brcmf_bus *bus)
-{
- uint len;
- char *memblock = NULL;
- char *bufp;
- int ret;
+ /* If there is something, make like the ISR and
+ schedule the DPC */
+ if (intstatus) {
+ bus->pollcnt++;
+ bus->ipend = true;
- bus->nv_name = BCM4329_NV_NAME;
- ret = request_firmware(&bus->firmware, bus->nv_name,
- &bus->sdiodev->func[2]->dev);
- if (ret) {
- brcmf_dbg(ERROR, "Fail to request nvram %d\n", ret);
- return ret;
- }
- bus->fw_ptr = 0;
+ bus->dpc_sched = true;
+ brcmf_sdbrcm_sched_dpc(bus);
- memblock = kmalloc(MEMBLOCK, GFP_ATOMIC);
- if (memblock == NULL) {
- brcmf_dbg(ERROR, "Failed to allocate memory %d bytes\n",
- MEMBLOCK);
- ret = -ENOMEM;
- goto err;
- }
+ }
+ }
- len = brcmf_sdbrcm_get_image(memblock, MEMBLOCK, 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 */
- if (len > 0 && len < MEMBLOCK) {
- bufp = (char *)memblock;
- bufp[len] = 0;
- len = brcmf_process_nvram_vars(bufp, len);
- bufp += len;
- *bufp++ = 0;
- if (len)
- ret = brcmf_sdbrcm_downloadvars(bus, memblock, len + 1);
- if (ret)
- brcmf_dbg(ERROR, "error downloading vars: %d\n", ret);
- } else {
- brcmf_dbg(ERROR, "error reading nvram file: %d\n", len);
- ret = -EIO;
+ /* 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);
+ }
+ }
}
-err:
- kfree(memblock);
+ brcmf_sdbrcm_sdunlock(bus);
- release_firmware(bus->firmware);
- bus->fw_ptr = 0;
+ return bus->ipend;
+}
- return ret;
+static bool brcmf_sdbrcm_chipmatch(u16 chipid)
+{
+ if (chipid == BCM4329_CHIP_ID)
+ return true;
+ return false;
}
-static int _brcmf_sdbrcm_download_firmware(struct brcmf_bus *bus)
+static void brcmf_sdbrcm_release_malloc(struct brcmf_bus *bus)
{
- int bcmerror = -1;
+ brcmf_dbg(TRACE, "Enter\n");
- /* Keep arm in reset */
- if (brcmf_sdbrcm_download_state(bus, true)) {
- brcmf_dbg(ERROR, "error placing ARM core in reset\n");
- goto err;
- }
+ if (bus->drvr && bus->drvr->dongle_reset)
+ return;
- /* External image takes precedence if specified */
- if (brcmf_sdbrcm_download_code_file(bus)) {
- brcmf_dbg(ERROR, "dongle image file download failed\n");
- goto err;
- }
+ kfree(bus->rxbuf);
+ bus->rxctl = bus->rxbuf = NULL;
+ bus->rxlen = 0;
- /* External nvram takes precedence if specified */
- if (brcmf_sdbrcm_download_nvram(bus))
- brcmf_dbg(ERROR, "dongle nvram file download failed\n");
+ kfree(bus->databuf);
+ bus->databuf = NULL;
+}
- /* Take arm out of reset */
- if (brcmf_sdbrcm_download_state(bus, false)) {
- brcmf_dbg(ERROR, "error getting out of ARM core reset\n");
- goto err;
+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;
+ }
}
- bcmerror = 0;
+ /* 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;
+ }
-err:
- return bcmerror;
-}
+ /* 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;
-static int
-brcmf_sdbrcm_send_buf(struct brcmf_bus *bus, u32 addr, uint fn, uint flags,
- u8 *buf, uint nbytes, struct sk_buff *pkt)
-{
- return brcmf_sdcard_send_buf
- (bus->sdiodev, addr, fn, flags, buf, nbytes, pkt);
+fail:
+ return false;
}
-int brcmf_bus_devreset(struct brcmf_pub *drvr, u8 flag)
-{
- int bcmerror = 0;
- struct brcmf_bus *bus;
-
- bus = drvr->bus;
+/* SDIO Pad drive strength to select value mappings */
+struct sdiod_drive_str {
+ u8 strength; /* Pad Drive Strength in mA */
+ u8 sel; /* Chip-specific select value */
+};
- 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);
+/* SDIO Drive Strength to sel value table for PMU Rev 1 */
+static const struct sdiod_drive_str sdiod_drive_strength_tab1[] = {
+ {
+ 4, 0x2}, {
+ 2, 0x3}, {
+ 1, 0x0}, {
+ 0, 0x0}
+ };
- /* Clean tx/rx buffer pointers,
- detach from the dongle */
- brcmf_sdbrcm_release_dongle(bus);
+/* SDIO Drive Strength to sel value table for PMU Rev 2, 3 */
+static const struct sdiod_drive_str sdiod_drive_strength_tab2[] = {
+ {
+ 12, 0x7}, {
+ 10, 0x6}, {
+ 8, 0x5}, {
+ 6, 0x4}, {
+ 4, 0x2}, {
+ 2, 0x1}, {
+ 0, 0x0}
+ };
- bus->drvr->dongle_reset = true;
- bus->drvr->up = false;
+/* SDIO Drive Strength to sel value table for PMU Rev 8 (1.8V) */
+static const struct sdiod_drive_str sdiod_drive_strength_tab3[] = {
+ {
+ 32, 0x7}, {
+ 26, 0x6}, {
+ 22, 0x5}, {
+ 16, 0x4}, {
+ 12, 0x3}, {
+ 8, 0x2}, {
+ 4, 0x1}, {
+ 0, 0x0}
+ };
- 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 */
+#define SDIOD_DRVSTR_KEY(chip, pmu) (((chip) << 16) | (pmu))
- brcmf_dbg(TRACE, " == WLAN ON ==\n");
+static void brcmf_sdbrcm_sdiod_drive_strength_init(struct brcmf_bus *bus,
+ u32 drivestrength) {
+ struct sdiod_drive_str *str_tab = NULL;
+ u32 str_mask = 0;
+ u32 str_shift = 0;
+ char chn[8];
- if (bus->drvr->dongle_reset) {
- /* Turn on WLAN */
+ if (!(bus->ci->cccaps & CC_CAP_PMU))
+ return;
- /* 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);
+ switch (SDIOD_DRVSTR_KEY(bus->ci->chip, bus->ci->pmurev)) {
+ case SDIOD_DRVSTR_KEY(BCM4325_CHIP_ID, 1):
+ str_tab = (struct sdiod_drive_str *)&sdiod_drive_strength_tab1;
+ str_mask = 0x30000000;
+ str_shift = 28;
+ break;
+ case SDIOD_DRVSTR_KEY(BCM4325_CHIP_ID, 2):
+ case SDIOD_DRVSTR_KEY(BCM4325_CHIP_ID, 3):
+ str_tab = (struct sdiod_drive_str *)&sdiod_drive_strength_tab2;
+ str_mask = 0x00003800;
+ str_shift = 11;
+ break;
+ case SDIOD_DRVSTR_KEY(BCM4336_CHIP_ID, 8):
+ str_tab = (struct sdiod_drive_str *)&sdiod_drive_strength_tab3;
+ str_mask = 0x00003800;
+ str_shift = 11;
+ break;
+ default:
+ brcmf_dbg(ERROR, "No SDIO Drive strength init done for chip %s rev %d pmurev %d\n",
+ brcmu_chipname(bus->ci->chip, chn, 8),
+ bus->ci->chiprev, bus->ci->pmurev);
+ break;
+ }
- bus->drvr->dongle_reset = false;
- bus->drvr->up = true;
+ if (str_tab != NULL) {
+ u32 drivestrength_sel = 0;
+ u32 cc_data_temp;
+ int i;
- 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;
+ for (i = 0; str_tab[i].strength != 0; i++) {
+ if (drivestrength >= str_tab[i].strength) {
+ drivestrength_sel = str_tab[i].sel;
+ break;
+ }
}
- brcmf_sdbrcm_wd_timer(bus, brcmf_watchdog_ms);
+
+ brcmf_sdcard_reg_write(bus->sdiodev,
+ CORE_CC_REG(bus->ci->cccorebase, chipcontrol_addr),
+ 4, 1);
+ cc_data_temp = brcmf_sdcard_reg_read(bus->sdiodev,
+ CORE_CC_REG(bus->ci->cccorebase, chipcontrol_addr), 4);
+ cc_data_temp &= ~str_mask;
+ drivestrength_sel <<= str_shift;
+ cc_data_temp |= drivestrength_sel;
+ brcmf_sdcard_reg_write(bus->sdiodev,
+ CORE_CC_REG(bus->ci->cccorebase, chipcontrol_addr),
+ 4, cc_data_temp);
+
+ brcmf_dbg(INFO, "SDIO: %dmA drive strength selected, set to 0x%08x\n",
+ drivestrength, cc_data_temp);
}
- return bcmerror;
}
static int
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);
- }
+ 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;
- /* 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);
+ brcmf_dbg(INFO, "ccrev=%d, pmurev=%d, buscore rev/type=%d/0x%x\n",
+ ci->ccrev, ci->pmurev, ci->buscorerev, ci->buscoretype);
- /* 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);
- }
- }
+ /* get chipcommon capabilites */
+ ci->cccaps = brcmf_sdcard_reg_read(sdiodev,
+ CORE_CC_REG(ci->cccorebase, capabilities), 4);
- /* leave reset and reject asserted */
- brcmf_sdcard_reg_write(sdiodev, CORE_SB(corebase, sbtmstatelow), 4,
- (SBTML_REJ | SBTML_RESET));
- udelay(1);
+ return 0;
}
static int
return err;
}
-static void
-brcmf_sdbrcm_chip_resetcore(struct brcmf_sdio_dev *sdiodev, u32 corebase)
+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");
+
+ /* 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 int
+brcmf_sdbrcm_watchdog_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_watchdog_prio > 0) {
+ struct sched_param param;
+ param.sched_priority = (brcmf_watchdog_prio < MAX_RT_PRIO) ?
+ brcmf_watchdog_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->watchdog_wait)) {
+ if (bus->drvr->dongle_reset == false)
+ brcmf_sdbrcm_bus_watchdog(bus->drvr);
+ /* Count the tick for reference */
+ bus->drvr->tickcnt++;
+ } else
+ break;
+ }
+ return 0;
+}
+
+static void
+brcmf_sdbrcm_watchdog(unsigned long data)
+{
+ struct brcmf_bus *bus = (struct brcmf_bus *)data;
+
+ if (brcmf_watchdog_prio >= 0) {
+ if (bus->watchdog_tsk)
+ complete(&bus->watchdog_wait);
+ else
+ return;
+ } else {
+ brcmf_sdbrcm_bus_watchdog(bus->drvr);
+
+ /* Count the tick for reference */
+ bus->drvr->tickcnt++;
+ }
+
+ /* Reschedule the watchdog */
+ if (bus->wd_timer_valid)
+ 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)
{
- u32 regdata;
+ int ret;
+ struct brcmf_bus *bus;
- /*
- * Must do the disable sequence first to work for
- * arbitrary current core state.
+ /* 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_sdbrcm_chip_disablecore(sdiodev, corebase);
+ brcmf_txbound = BRCMF_TXBOUND;
+ brcmf_rxbound = BRCMF_RXBOUND;
+ brcmf_alignctl = true;
+ brcmf_readahead = true;
+ retrydata = false;
+ brcmf_dongle_memsize = 0;
+ brcmf_txminmax = BRCMF_TXMINMAX;
- /*
- * 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);
+ forcealign = true;
- 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);
+ brcmf_c_init();
- 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));
+ brcmf_dbg(TRACE, "Enter\n");
- /* 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);
+ /* We make an assumption about address window mappings:
+ * regsva == SI_ENUM_BASE*/
- /* leave clock enabled */
- brcmf_sdcard_reg_write(sdiodev, CORE_SB(corebase, sbtmstatelow), 4,
- (SICF_CLOCK_EN << SBTML_SICF_SHIFT));
- udelay(1);
-}
+ /* 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 */
-/* SDIO Pad drive strength to select value mappings */
-struct sdiod_drive_str {
- u8 strength; /* Pad Drive Strength in mA */
- u8 sel; /* Chip-specific select value */
-};
+ /* attempt to attach to the dongle */
+ if (!(brcmf_sdbrcm_probe_attach(bus, regsva))) {
+ brcmf_dbg(ERROR, "brcmf_sdbrcm_probe_attach failed\n");
+ goto fail;
+ }
-/* SDIO Drive Strength to sel value table for PMU Rev 1 */
-static const struct sdiod_drive_str sdiod_drive_strength_tab1[] = {
- {
- 4, 0x2}, {
- 2, 0x3}, {
- 1, 0x0}, {
- 0, 0x0}
- };
+ spin_lock_init(&bus->txqlock);
+ init_waitqueue_head(&bus->ctrl_wait);
+ init_waitqueue_head(&bus->ioctl_resp_wait);
-/* SDIO Drive Strength to sel value table for PMU Rev 2, 3 */
-static const struct sdiod_drive_str sdiod_drive_strength_tab2[] = {
- {
- 12, 0x7}, {
- 10, 0x6}, {
- 8, 0x5}, {
- 6, 0x4}, {
- 4, 0x2}, {
- 2, 0x1}, {
- 0, 0x0}
- };
+ /* Set up the watchdog timer */
+ init_timer(&bus->timer);
+ bus->timer.data = (unsigned long)bus;
+ bus->timer.function = brcmf_sdbrcm_watchdog;
-/* SDIO Drive Strength to sel value table for PMU Rev 8 (1.8V) */
-static const struct sdiod_drive_str sdiod_drive_strength_tab3[] = {
- {
- 32, 0x7}, {
- 26, 0x6}, {
- 22, 0x5}, {
- 16, 0x4}, {
- 12, 0x3}, {
- 8, 0x2}, {
- 4, 0x1}, {
- 0, 0x0}
- };
+ /* 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);
+ }
-#define SDIOD_DRVSTR_KEY(chip, pmu) (((chip) << 16) | (pmu))
+ 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;
-static void brcmf_sdbrcm_sdiod_drive_strength_init(struct brcmf_bus *bus,
- u32 drivestrength) {
- struct sdiod_drive_str *str_tab = NULL;
- u32 str_mask = 0;
- u32 str_shift = 0;
- char chn[8];
+ /* 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;
+ }
- if (!(bus->ci->cccaps & CC_CAP_PMU))
- return;
+ /* 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;
+ }
- switch (SDIOD_DRVSTR_KEY(bus->ci->chip, bus->ci->pmurev)) {
- case SDIOD_DRVSTR_KEY(BCM4325_CHIP_ID, 1):
- str_tab = (struct sdiod_drive_str *)&sdiod_drive_strength_tab1;
- str_mask = 0x30000000;
- str_shift = 28;
- break;
- case SDIOD_DRVSTR_KEY(BCM4325_CHIP_ID, 2):
- case SDIOD_DRVSTR_KEY(BCM4325_CHIP_ID, 3):
- str_tab = (struct sdiod_drive_str *)&sdiod_drive_strength_tab2;
- str_mask = 0x00003800;
- str_shift = 11;
- break;
- case SDIOD_DRVSTR_KEY(BCM4336_CHIP_ID, 8):
- str_tab = (struct sdiod_drive_str *)&sdiod_drive_strength_tab3;
- str_mask = 0x00003800;
- str_shift = 11;
- break;
- default:
- brcmf_dbg(ERROR, "No SDIO Drive strength init done for chip %s rev %d pmurev %d\n",
- brcmu_chipname(bus->ci->chip, chn, 8),
- bus->ci->chiprev, bus->ci->pmurev);
- break;
+ /* Allocate buffers */
+ if (!(brcmf_sdbrcm_probe_malloc(bus))) {
+ brcmf_dbg(ERROR, "brcmf_sdbrcm_probe_malloc failed\n");
+ goto fail;
}
- if (str_tab != NULL) {
- u32 drivestrength_sel = 0;
- u32 cc_data_temp;
- int i;
+ if (!(brcmf_sdbrcm_probe_init(bus))) {
+ brcmf_dbg(ERROR, "brcmf_sdbrcm_probe_init failed\n");
+ goto fail;
+ }
- for (i = 0; str_tab[i].strength != 0; i++) {
- if (drivestrength >= str_tab[i].strength) {
- drivestrength_sel = str_tab[i].sel;
- break;
- }
+ /* 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;
+ }
- brcmf_sdcard_reg_write(bus->sdiodev,
- CORE_CC_REG(bus->ci->cccorebase, chipcontrol_addr),
- 4, 1);
- cc_data_temp = brcmf_sdcard_reg_read(bus->sdiodev,
- CORE_CC_REG(bus->ci->cccorebase, chipcontrol_addr), 4);
- cc_data_temp &= ~str_mask;
- drivestrength_sel <<= str_shift;
- cc_data_temp |= drivestrength_sel;
- brcmf_sdcard_reg_write(bus->sdiodev,
- CORE_CC_REG(bus->ci->cccorebase, chipcontrol_addr),
- 4, cc_data_temp);
+ 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(INFO, "SDIO: %dmA drive strength selected, set to 0x%08x\n",
- drivestrength, cc_data_temp);
- }
+ brcmf_dbg(TRACE, "Enter\n");
+
+ if (bus)
+ brcmf_sdbrcm_release(bus);
+
+ brcmf_dbg(TRACE, "Disconnected\n");
}
-static void
-brcmf_sdbrcm_chip_detach(struct brcmf_bus *bus)
+int brcmf_bus_register(void)
{
brcmf_dbg(TRACE, "Enter\n");
- kfree(bus->ci);
- bus->ci = NULL;
+ /* 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();
}
-static void
-brcmf_sdbrcm_wait_for_event(struct brcmf_bus *bus, bool *lockvar)
+void brcmf_bus_unregister(void)
{
- brcmf_sdbrcm_sdunlock(bus);
- wait_event_interruptible_timeout(bus->ctrl_wait,
- (*lockvar == false), HZ * 2);
- brcmf_sdbrcm_sdlock(bus);
- return;
+ brcmf_dbg(TRACE, "Enter\n");
+
+ brcmf_sdio_unregister();
}
-static void
-brcmf_sdbrcm_wait_event_wakeup(struct brcmf_bus *bus)
+struct device *brcmf_bus_get_device(struct brcmf_bus *bus)
{
- if (waitqueue_active(&bus->ctrl_wait))
- wake_up_interruptible(&bus->ctrl_wait);
- return;
+ return &bus->sdiodev->func[2]->dev;
}
-static int
-brcmf_sdbrcm_watchdog_thread(void *data)
+int brcmf_bus_devreset(struct brcmf_pub *drvr, u8 flag)
{
- struct brcmf_bus *bus = (struct brcmf_bus *)data;
+ int bcmerror = 0;
+ struct brcmf_bus *bus;
- /* This thread doesn't need any user-level access,
- * so get rid of all our resources
- */
- if (brcmf_watchdog_prio > 0) {
- struct sched_param param;
- param.sched_priority = (brcmf_watchdog_prio < MAX_RT_PRIO) ?
- brcmf_watchdog_prio : (MAX_RT_PRIO - 1);
- sched_setscheduler(current, SCHED_FIFO, ¶m);
- }
+ bus = drvr->bus;
- allow_signal(SIGTERM);
- /* Run until signal received */
- while (1) {
- if (kthread_should_stop())
- break;
- if (!wait_for_completion_interruptible(&bus->watchdog_wait)) {
- if (bus->drvr->dongle_reset == false)
- brcmf_sdbrcm_bus_watchdog(bus->drvr);
- /* Count the tick for reference */
- bus->drvr->tickcnt++;
- } else
- break;
- }
- return 0;
-}
+ 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);
-static void
-brcmf_sdbrcm_watchdog(unsigned long data)
-{
- struct brcmf_bus *bus = (struct brcmf_bus *)data;
+ /* Clean tx/rx buffer pointers,
+ detach from the dongle */
+ brcmf_sdbrcm_release_dongle(bus);
- if (brcmf_watchdog_prio >= 0) {
- if (bus->watchdog_tsk)
- complete(&bus->watchdog_wait);
- else
- return;
+ 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 {
- brcmf_sdbrcm_bus_watchdog(bus->drvr);
+ /* App must have restored power to device before calling */
- /* Count the tick for reference */
- bus->drvr->tickcnt++;
- }
+ brcmf_dbg(TRACE, " == WLAN ON ==\n");
- /* Reschedule the watchdog */
- if (bus->wd_timer_valid)
- mod_timer(&bus->timer, jiffies + brcmf_watchdog_ms * HZ / 1000);
+ 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
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;
-}
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