__le32 brpt_addr;
};
+/* SDIO read frame info */
+struct brcmf_sdio_read {
+ u8 seq_num;
+ u8 channel;
+ u16 len;
+ u16 len_left;
+ u16 len_nxtfrm;
+ u8 dat_offset;
+};
/* misc chip info needed by some of the routines */
/* Private data for SDIO bus interaction */
u32 ramsize; /* Size of RAM in SOCRAM (bytes) */
u32 hostintmask; /* Copy of Host Interrupt Mask */
- u32 intstatus; /* Intstatus bits (events) pending */
- bool dpc_sched; /* Indicates DPC schedule (intrpt rcvd) */
- bool fcstate; /* State of dongle flow-control */
+ atomic_t intstatus; /* Intstatus bits (events) pending */
+ atomic_t fcstate; /* State of dongle flow-control */
uint blocksize; /* Block size of SDIO transfers */
uint roundup; /* Max roundup limit */
u8 hdrbuf[MAX_HDR_READ + BRCMF_SDALIGN];
u8 *rxhdr; /* Header of current rx frame (in hdrbuf) */
- u16 nextlen; /* Next Read Len from last header */
u8 rx_seq; /* Receive sequence number (expected) */
+ struct brcmf_sdio_read cur_read;
+ /* info of current read frame */
bool rxskip; /* Skip receive (awaiting NAK ACK) */
+ bool rxpending; /* Data frame pending in dongle */
uint rxbound; /* Rx frames to read before resched */
uint txbound; /* Tx frames to send before resched */
u8 *rxbuf; /* Buffer for receiving control packets */
uint rxblen; /* Allocated length of rxbuf */
u8 *rxctl; /* Aligned pointer into rxbuf */
+ u8 *rxctl_orig; /* pointer for freeing rxctl */
u8 *databuf; /* Buffer for receiving big glom packet */
u8 *dataptr; /* Aligned pointer into databuf */
uint rxlen; /* Length of valid data in buffer */
+ spinlock_t rxctl_lock; /* protection lock for ctrl frame resources */
u8 sdpcm_ver; /* Bus protocol reported by dongle */
bool intr; /* Use interrupts */
bool poll; /* Use polling */
- bool ipend; /* Device interrupt is pending */
+ atomic_t ipend; /* Device interrupt is pending */
uint spurious; /* Count of spurious interrupts */
uint pollrate; /* Ticks between device polls */
uint polltick; /* Tick counter */
s32 idleclock; /* How to set bus driver when idle */
s32 sd_rxchain;
bool use_rxchain; /* If brcmf should use PKT chains */
- bool sleeping; /* Is SDIO bus sleeping? */
bool rxflow_mode; /* Rx flow control mode */
bool rxflow; /* Is rx flow control on */
bool alp_only; /* Don't use HT clock (ALP only) */
-/* Field to decide if rx of control frames happen in rxbuf or lb-pool */
- bool usebufpool;
u8 *ctrl_frame_buf;
u32 ctrl_frame_len;
bool wd_timer_valid;
uint save_ms;
- struct task_struct *dpc_tsk;
- struct completion dpc_wait;
+ struct workqueue_struct *brcmf_wq;
+ struct work_struct datawork;
struct list_head dpc_tsklst;
spinlock_t dpc_tl_lock;
- struct semaphore sdsem;
-
const struct firmware *firmware;
u32 fw_ptr;
#define ALIGNMENT 4
+enum brcmf_sdio_frmtype {
+ BRCMF_SDIO_FT_NORMAL,
+ BRCMF_SDIO_FT_SUPER,
+ BRCMF_SDIO_FT_SUB,
+};
+
static void pkt_align(struct sk_buff *p, int len, int align)
{
uint datalign;
#define HOSTINTMASK (I_HMB_SW_MASK | I_CHIPACTIVE)
-/* Packet free applicable unconditionally for sdio and sdspi.
- * Conditional if bufpool was present for gspi bus.
- */
-static void brcmf_sdbrcm_pktfree2(struct brcmf_sdio *bus, struct sk_buff *pkt)
-{
- if (bus->usebufpool)
- brcmu_pkt_buf_free_skb(pkt);
-}
-
/* Turn backplane clock on or off */
static int brcmf_sdbrcm_htclk(struct brcmf_sdio *bus, bool on, bool pendok)
{
return 0;
}
-static int brcmf_sdbrcm_bussleep(struct brcmf_sdio *bus, bool sleep)
-{
- int ret;
-
- brcmf_dbg(INFO, "request %s (currently %s)\n",
- sleep ? "SLEEP" : "WAKE",
- bus->sleeping ? "SLEEP" : "WAKE");
-
- /* Done if we're already in the requested state */
- if (sleep == bus->sleeping)
- return 0;
-
- /* Going to sleep: set the alarm and turn off the lights... */
- if (sleep) {
- /* Don't sleep if something is pending */
- if (bus->dpc_sched || bus->rxskip || pktq_len(&bus->txq))
- return -EBUSY;
-
- /* Make sure the controller has the bus up */
- brcmf_sdbrcm_clkctl(bus, CLK_AVAIL, false);
-
- /* Tell device to start using OOB wakeup */
- ret = w_sdreg32(bus, SMB_USE_OOB,
- offsetof(struct sdpcmd_regs, tosbmailbox));
- if (ret != 0)
- brcmf_dbg(ERROR, "CANNOT SIGNAL CHIP, WILL NOT WAKE UP!!\n");
-
- /* Turn off our contribution to the HT clock request */
- brcmf_sdbrcm_clkctl(bus, CLK_SDONLY, false);
-
- brcmf_sdio_regwb(bus->sdiodev, SBSDIO_FUNC1_CHIPCLKCSR,
- SBSDIO_FORCE_HW_CLKREQ_OFF, NULL);
-
- /* Isolate the bus */
- brcmf_sdio_regwb(bus->sdiodev, SBSDIO_DEVICE_CTL,
- SBSDIO_DEVCTL_PADS_ISO, NULL);
-
- /* Change state */
- bus->sleeping = true;
-
- } else {
- /* Waking up: bus power up is ok, set local state */
-
- brcmf_sdio_regwb(bus->sdiodev, SBSDIO_FUNC1_CHIPCLKCSR,
- 0, NULL);
-
- /* Make sure the controller has the bus up */
- brcmf_sdbrcm_clkctl(bus, CLK_AVAIL, false);
-
- /* Send misc interrupt to indicate OOB not needed */
- ret = w_sdreg32(bus, 0,
- offsetof(struct sdpcmd_regs, tosbmailboxdata));
- if (ret == 0)
- ret = w_sdreg32(bus, SMB_DEV_INT,
- offsetof(struct sdpcmd_regs, tosbmailbox));
-
- if (ret != 0)
- brcmf_dbg(ERROR, "CANNOT SIGNAL CHIP TO CLEAR OOB!!\n");
-
- /* Make sure we have SD bus access */
- brcmf_sdbrcm_clkctl(bus, CLK_SDONLY, false);
-
- /* Change state */
- bus->sleeping = false;
- }
-
- return 0;
-}
-
-static void bus_wake(struct brcmf_sdio *bus)
-{
- if (bus->sleeping)
- brcmf_sdbrcm_bussleep(bus, false);
-}
-
static u32 brcmf_sdbrcm_hostmail(struct brcmf_sdio *bus)
{
u32 intstatus = 0;
}
/* Clear partial in any case */
- bus->nextlen = 0;
+ bus->cur_read.len = 0;
/* If we can't reach the device, signal failure */
if (err)
}
}
+static int brcmf_sdio_hdparser(struct brcmf_sdio *bus, u8 *header,
+ struct brcmf_sdio_read *rd,
+ enum brcmf_sdio_frmtype type)
+{
+ u16 len, checksum;
+ u8 rx_seq, fc, tx_seq_max;
+
+ /*
+ * 4 bytes hardware header (frame tag)
+ * Byte 0~1: Frame length
+ * Byte 2~3: Checksum, bit-wise inverse of frame length
+ */
+ len = get_unaligned_le16(header);
+ checksum = get_unaligned_le16(header + sizeof(u16));
+ /* All zero means no more to read */
+ if (!(len | checksum)) {
+ bus->rxpending = false;
+ return -ENODATA;
+ }
+ if ((u16)(~(len ^ checksum))) {
+ brcmf_dbg(ERROR, "HW header checksum error\n");
+ bus->sdcnt.rx_badhdr++;
+ brcmf_sdbrcm_rxfail(bus, false, false);
+ return -EIO;
+ }
+ if (len < SDPCM_HDRLEN) {
+ brcmf_dbg(ERROR, "HW header length error\n");
+ return -EPROTO;
+ }
+ if (type == BRCMF_SDIO_FT_SUPER &&
+ (roundup(len, bus->blocksize) != rd->len)) {
+ brcmf_dbg(ERROR, "HW superframe header length error\n");
+ return -EPROTO;
+ }
+ if (type == BRCMF_SDIO_FT_SUB && len > rd->len) {
+ brcmf_dbg(ERROR, "HW subframe header length error\n");
+ return -EPROTO;
+ }
+ rd->len = len;
+
+ /*
+ * 8 bytes hardware header
+ * Byte 0: Rx sequence number
+ * Byte 1: 4 MSB Channel number, 4 LSB arbitrary flag
+ * Byte 2: Length of next data frame
+ * Byte 3: Data offset
+ * Byte 4: Flow control bits
+ * Byte 5: Maximum Sequence number allow for Tx
+ * Byte 6~7: Reserved
+ */
+ if (type == BRCMF_SDIO_FT_SUPER &&
+ SDPCM_GLOMDESC(&header[SDPCM_FRAMETAG_LEN])) {
+ brcmf_dbg(ERROR, "Glom descriptor found in superframe head\n");
+ rd->len = 0;
+ return -EINVAL;
+ }
+ rx_seq = SDPCM_PACKET_SEQUENCE(&header[SDPCM_FRAMETAG_LEN]);
+ rd->channel = SDPCM_PACKET_CHANNEL(&header[SDPCM_FRAMETAG_LEN]);
+ if (len > MAX_RX_DATASZ && rd->channel != SDPCM_CONTROL_CHANNEL &&
+ type != BRCMF_SDIO_FT_SUPER) {
+ brcmf_dbg(ERROR, "HW header length too long\n");
+ bus->sdiodev->bus_if->dstats.rx_errors++;
+ bus->sdcnt.rx_toolong++;
+ brcmf_sdbrcm_rxfail(bus, false, false);
+ rd->len = 0;
+ return -EPROTO;
+ }
+ if (type == BRCMF_SDIO_FT_SUPER && rd->channel != SDPCM_GLOM_CHANNEL) {
+ brcmf_dbg(ERROR, "Wrong channel for superframe\n");
+ rd->len = 0;
+ return -EINVAL;
+ }
+ if (type == BRCMF_SDIO_FT_SUB && rd->channel != SDPCM_DATA_CHANNEL &&
+ rd->channel != SDPCM_EVENT_CHANNEL) {
+ brcmf_dbg(ERROR, "Wrong channel for subframe\n");
+ rd->len = 0;
+ return -EINVAL;
+ }
+ rd->dat_offset = SDPCM_DOFFSET_VALUE(&header[SDPCM_FRAMETAG_LEN]);
+ if (rd->dat_offset < SDPCM_HDRLEN || rd->dat_offset > rd->len) {
+ brcmf_dbg(ERROR, "seq %d: bad data offset\n", rx_seq);
+ bus->sdcnt.rx_badhdr++;
+ brcmf_sdbrcm_rxfail(bus, false, false);
+ rd->len = 0;
+ return -ENXIO;
+ }
+ if (rd->seq_num != rx_seq) {
+ brcmf_dbg(ERROR, "seq %d: sequence number error, expect %d\n",
+ rx_seq, rd->seq_num);
+ bus->sdcnt.rx_badseq++;
+ rd->seq_num = rx_seq;
+ }
+ /* no need to check the reset for subframe */
+ if (type == BRCMF_SDIO_FT_SUB)
+ return 0;
+ rd->len_nxtfrm = header[SDPCM_FRAMETAG_LEN + SDPCM_NEXTLEN_OFFSET];
+ if (rd->len_nxtfrm << 4 > MAX_RX_DATASZ) {
+ /* only warm for NON glom packet */
+ if (rd->channel != SDPCM_GLOM_CHANNEL)
+ brcmf_dbg(ERROR, "seq %d: next length error\n", rx_seq);
+ rd->len_nxtfrm = 0;
+ }
+ fc = SDPCM_FCMASK_VALUE(&header[SDPCM_FRAMETAG_LEN]);
+ if (bus->flowcontrol != fc) {
+ if (~bus->flowcontrol & fc)
+ bus->sdcnt.fc_xoff++;
+ if (bus->flowcontrol & ~fc)
+ bus->sdcnt.fc_xon++;
+ bus->sdcnt.fc_rcvd++;
+ bus->flowcontrol = fc;
+ }
+ tx_seq_max = SDPCM_WINDOW_VALUE(&header[SDPCM_FRAMETAG_LEN]);
+ if ((u8)(tx_seq_max - bus->tx_seq) > 0x40) {
+ brcmf_dbg(ERROR, "seq %d: max tx seq number error\n", rx_seq);
+ tx_seq_max = bus->tx_seq + 2;
+ }
+ bus->tx_max = tx_seq_max;
+
+ return 0;
+}
+
static u8 brcmf_sdbrcm_rxglom(struct brcmf_sdio *bus, u8 rxseq)
{
u16 dlen, totlen;
u8 *dptr, num = 0;
- u16 sublen, check;
+ u16 sublen;
struct sk_buff *pfirst, *pnext;
int errcode;
- u8 chan, seq, doff, sfdoff;
- u8 txmax;
+ u8 doff, sfdoff;
int ifidx = 0;
bool usechain = bus->use_rxchain;
+ struct brcmf_sdio_read rd_new;
+
/* If packets, issue read(s) and send up packet chain */
/* Return sequence numbers consumed? */
if (pnext) {
brcmf_dbg(GLOM, "allocated %d-byte packet chain for %d subframes\n",
totlen, num);
- if (BRCMF_GLOM_ON() && bus->nextlen &&
- totlen != bus->nextlen) {
+ if (BRCMF_GLOM_ON() && bus->cur_read.len &&
+ totlen != bus->cur_read.len) {
brcmf_dbg(GLOM, "glomdesc mismatch: nextlen %d glomdesc %d rxseq %d\n",
- bus->nextlen, totlen, rxseq);
+ bus->cur_read.len, totlen, rxseq);
}
pfirst = pnext = NULL;
} else {
/* Done with descriptor packet */
brcmu_pkt_buf_free_skb(bus->glomd);
bus->glomd = NULL;
- bus->nextlen = 0;
+ bus->cur_read.len = 0;
}
/* Ok -- either we just generated a packet chain,
* read directly into the chained packet, or allocate a large
* packet and and copy into the chain.
*/
+ sdio_claim_host(bus->sdiodev->func[1]);
if (usechain) {
errcode = brcmf_sdcard_recv_chain(bus->sdiodev,
bus->sdiodev->sbwad,
dlen);
errcode = -1;
}
+ sdio_release_host(bus->sdiodev->func[1]);
bus->sdcnt.f2rxdata++;
/* On failure, kill the superframe, allow a couple retries */
dlen, errcode);
bus->sdiodev->bus_if->dstats.rx_errors++;
+ sdio_claim_host(bus->sdiodev->func[1]);
if (bus->glomerr++ < 3) {
brcmf_sdbrcm_rxfail(bus, true, true);
} else {
bus->sdcnt.rxglomfail++;
brcmf_sdbrcm_free_glom(bus);
}
+ sdio_release_host(bus->sdiodev->func[1]);
return 0;
}
pfirst->data, min_t(int, pfirst->len, 48),
"SUPERFRAME:\n");
- /* 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->sdcnt.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;
+ rd_new.seq_num = rxseq;
+ rd_new.len = dlen;
+ sdio_claim_host(bus->sdiodev->func[1]);
+ errcode = brcmf_sdio_hdparser(bus, pfirst->data, &rd_new,
+ BRCMF_SDIO_FT_SUPER);
+ sdio_release_host(bus->sdiodev->func[1]);
+ bus->cur_read.len = rd_new.len_nxtfrm << 4;
/* Remove superframe header, remember offset */
- skb_pull(pfirst, doff);
- sfdoff = doff;
+ skb_pull(pfirst, rd_new.dat_offset);
+ sfdoff = rd_new.dat_offset;
num = 0;
/* Validate all the subframe headers */
if (errcode)
break;
- 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]);
+ rd_new.len = pnext->len;
+ rd_new.seq_num = rxseq++;
+ sdio_claim_host(bus->sdiodev->func[1]);
+ errcode = brcmf_sdio_hdparser(bus, pnext->data, &rd_new,
+ BRCMF_SDIO_FT_SUB);
+ sdio_release_host(bus->sdiodev->func[1]);
brcmf_dbg_hex_dump(BRCMF_GLOM_ON(),
- dptr, 32, "subframe:\n");
+ pnext->data, 32, "subframe:\n");
- 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;
- }
- /* increase the subframe count */
num++;
}
if (errcode) {
/* Terminate frame on error, request
a couple retries */
+ sdio_claim_host(bus->sdiodev->func[1]);
if (bus->glomerr++ < 3) {
/* Restore superframe header space */
skb_push(pfirst, sfdoff);
bus->sdcnt.rxglomfail++;
brcmf_sdbrcm_free_glom(bus);
}
- bus->nextlen = 0;
+ sdio_release_host(bus->sdiodev->func[1]);
+ bus->cur_read.len = 0;
return 0;
}
skb_queue_walk_safe(&bus->glom, pfirst, pnext) {
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->sdcnt.rx_badseq++;
- rxseq = seq;
- }
- rxseq++;
-
brcmf_dbg_hex_dump(BRCMF_BYTES_ON() && BRCMF_DATA_ON(),
- dptr, dlen, "Rx Subframe Data:\n");
+ dptr, pfirst->len,
+ "Rx Subframe Data:\n");
__skb_trim(pfirst, sublen);
skb_pull(pfirst, doff);
pfirst->prev);
}
/* sent any remaining packets up */
- if (bus->glom.qlen) {
- up(&bus->sdsem);
+ if (bus->glom.qlen)
brcmf_rx_frame(bus->sdiodev->dev, ifidx, &bus->glom);
- down(&bus->sdsem);
- }
bus->sdcnt.rxglomframes++;
bus->sdcnt.rxglompkts += bus->glom.qlen;
brcmf_sdbrcm_read_control(struct brcmf_sdio *bus, u8 *hdr, uint len, uint doff)
{
uint rdlen, pad;
-
+ u8 *buf = NULL, *rbuf;
int sdret;
brcmf_dbg(TRACE, "Enter\n");
- /* Set rxctl for frame (w/optional alignment) */
- bus->rxctl = bus->rxbuf;
- bus->rxctl += BRCMF_FIRSTREAD;
- pad = ((unsigned long)bus->rxctl % BRCMF_SDALIGN);
+ if (bus->rxblen)
+ buf = vzalloc(bus->rxblen);
+ if (!buf) {
+ brcmf_dbg(ERROR, "no memory for control frame\n");
+ goto done;
+ }
+ rbuf = bus->rxbuf;
+ pad = ((unsigned long)rbuf % BRCMF_SDALIGN);
if (pad)
- bus->rxctl += (BRCMF_SDALIGN - pad);
- bus->rxctl -= BRCMF_FIRSTREAD;
+ rbuf += (BRCMF_SDALIGN - pad);
/* Copy the already-read portion over */
- memcpy(bus->rxctl, hdr, BRCMF_FIRSTREAD);
+ memcpy(buf, hdr, BRCMF_FIRSTREAD);
if (len <= BRCMF_FIRSTREAD)
goto gotpkt;
goto done;
}
- /* Read remainder of frame body into the rxctl buffer */
+ /* Read remain of frame body */
sdret = brcmf_sdcard_recv_buf(bus->sdiodev,
bus->sdiodev->sbwad,
SDIO_FUNC_2,
- F2SYNC, (bus->rxctl + BRCMF_FIRSTREAD), rdlen);
+ F2SYNC, rbuf, rdlen);
bus->sdcnt.f2rxdata++;
/* Control frame failures need retransmission */
bus->sdcnt.rxc_errors++;
brcmf_sdbrcm_rxfail(bus, true, true);
goto done;
- }
+ } else
+ memcpy(buf + BRCMF_FIRSTREAD, rbuf, rdlen);
gotpkt:
brcmf_dbg_hex_dump(BRCMF_BYTES_ON() && BRCMF_CTL_ON(),
- bus->rxctl, len, "RxCtrl:\n");
+ buf, len, "RxCtrl:\n");
/* Point to valid data and indicate its length */
- bus->rxctl += doff;
+ spin_lock_bh(&bus->rxctl_lock);
+ if (bus->rxctl) {
+ brcmf_dbg(ERROR, "last control frame is being processed.\n");
+ spin_unlock_bh(&bus->rxctl_lock);
+ vfree(buf);
+ goto done;
+ }
+ bus->rxctl = buf + doff;
+ bus->rxctl_orig = buf;
bus->rxlen = len - doff;
+ spin_unlock_bh(&bus->rxctl_lock);
done:
/* Awake any waiters */
}
}
-static void
-brcmf_alloc_pkt_and_read(struct brcmf_sdio *bus, u16 rdlen,
- struct sk_buff **pkt, u8 **rxbuf)
-{
- int sdret; /* Return code from calls */
-
- *pkt = brcmu_pkt_buf_get_skb(rdlen + BRCMF_SDALIGN);
- if (*pkt == NULL)
- return;
-
- pkt_align(*pkt, rdlen, BRCMF_SDALIGN);
- *rxbuf = (u8 *) ((*pkt)->data);
- /* Read the entire frame */
- sdret = brcmf_sdcard_recv_pkt(bus->sdiodev, bus->sdiodev->sbwad,
- SDIO_FUNC_2, F2SYNC, *pkt);
- bus->sdcnt.f2rxdata++;
-
- if (sdret < 0) {
- brcmf_dbg(ERROR, "(nextlen): read %d bytes failed: %d\n",
- rdlen, sdret);
- brcmu_pkt_buf_free_skb(*pkt);
- bus->sdiodev->bus_if->dstats.rx_errors++;
- /* Force retry w/normal header read.
- * Don't attempt NAK for
- * gSPI
- */
- brcmf_sdbrcm_rxfail(bus, true, true);
- *pkt = NULL;
- }
-}
-
-/* Checks the header */
-static int
-brcmf_check_rxbuf(struct brcmf_sdio *bus, struct sk_buff *pkt, u8 *rxbuf,
- u8 rxseq, u16 nextlen, u16 *len)
-{
- u16 check;
- bool len_consistent; /* Result of comparing readahead len and
- len from hw-hdr */
-
- memcpy(bus->rxhdr, rxbuf, SDPCM_HDRLEN);
-
- /* Extract hardware header fields */
- *len = get_unaligned_le16(bus->rxhdr);
- check = get_unaligned_le16(bus->rxhdr + sizeof(u16));
-
- /* All zeros means readahead info was bad */
- if (!(*len | check)) {
- brcmf_dbg(INFO, "(nextlen): read zeros in HW header???\n");
- goto fail;
- }
-
- /* 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->sdcnt.rx_badhdr++;
- brcmf_sdbrcm_rxfail(bus, false, false);
- goto fail;
- }
-
- /* Validate frame length */
- if (*len < SDPCM_HDRLEN) {
- brcmf_dbg(ERROR, "(nextlen): HW hdr length invalid: %d\n",
- *len);
- goto fail;
- }
-
- /* Check for consistency with readahead 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);
- goto fail;
- }
-
- return 0;
-
-fail:
- brcmf_sdbrcm_pktfree2(bus, pkt);
- return -EINVAL;
-}
-
-/* Return true if there may be more frames to read */
-static uint
-brcmf_sdbrcm_readframes(struct brcmf_sdio *bus, uint maxframes, bool *finished)
+static uint brcmf_sdio_readframes(struct brcmf_sdio *bus, uint maxframes)
{
- u16 len, check; /* Extracted hardware header fields */
- u8 chan, seq, doff; /* Extracted software header fields */
- u8 fcbits; /* Extracted fcbits from software header */
-
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 */
- u8 *rxbuf;
int ifidx = 0;
uint rxcount = 0; /* Total frames read */
+ struct brcmf_sdio_read *rd = &bus->cur_read, rd_new;
+ u8 head_read = 0;
brcmf_dbg(TRACE, "Enter\n");
/* Not finished unless we encounter no more frames indication */
- *finished = false;
+ bus->rxpending = true;
- for (rxseq = bus->rx_seq, rxleft = maxframes;
+ for (rd->seq_num = bus->rx_seq, rxleft = maxframes;
!bus->rxskip && rxleft &&
bus->sdiodev->bus_if->state != BRCMF_BUS_DOWN;
- rxseq++, rxleft--) {
+ rd->seq_num++, rxleft--) {
/* Handle glomming separately */
if (bus->glomd || !skb_queue_empty(&bus->glom)) {
u8 cnt;
brcmf_dbg(GLOM, "calling rxglom: glomd %p, glom %p\n",
bus->glomd, skb_peek(&bus->glom));
- cnt = brcmf_sdbrcm_rxglom(bus, rxseq);
+ cnt = brcmf_sdbrcm_rxglom(bus, rd->seq_num);
brcmf_dbg(GLOM, "rxglom returned %d\n", cnt);
- rxseq += cnt - 1;
+ rd->seq_num += cnt - 1;
rxleft = (rxleft > cnt) ? (rxleft - cnt) : 1;
continue;
}
- /* Try doing single read if we can */
- if (bus->nextlen) {
- u16 nextlen = bus->nextlen;
- bus->nextlen = 0;
-
- rdlen = len = nextlen << 4;
- brcmf_pad(bus, &pad, &rdlen);
-
- /*
- * After the frame is received we have to
- * distinguish whether it is data
- * or non-data frame.
- */
- brcmf_alloc_pkt_and_read(bus, rdlen, &pkt, &rxbuf);
- if (pkt == NULL) {
- /* Give up on data, request rtx of events */
- brcmf_dbg(ERROR, "(nextlen): brcmf_alloc_pkt_and_read failed: len %d rdlen %d expected rxseq %d\n",
- len, rdlen, rxseq);
- continue;
- }
-
- if (brcmf_check_rxbuf(bus, pkt, rxbuf, rxseq, nextlen,
- &len) < 0)
+ rd->len_left = rd->len;
+ /* read header first for unknow frame length */
+ sdio_claim_host(bus->sdiodev->func[1]);
+ if (!rd->len) {
+ sdret = brcmf_sdcard_recv_buf(bus->sdiodev,
+ bus->sdiodev->sbwad,
+ SDIO_FUNC_2, F2SYNC,
+ bus->rxhdr,
+ BRCMF_FIRSTREAD);
+ bus->sdcnt.f2rxhdrs++;
+ if (sdret < 0) {
+ brcmf_dbg(ERROR, "RXHEADER FAILED: %d\n",
+ sdret);
+ bus->sdcnt.rx_hdrfail++;
+ brcmf_sdbrcm_rxfail(bus, true, true);
+ sdio_release_host(bus->sdiodev->func[1]);
continue;
-
- /* 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]);
-
- 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;
- }
-
- bus->sdcnt.rx_readahead_cnt++;
-
- /* Handle Flow Control */
- fcbits = SDPCM_FCMASK_VALUE(
- &bus->rxhdr[SDPCM_FRAMETAG_LEN]);
-
- if (bus->flowcontrol != fcbits) {
- if (~bus->flowcontrol & fcbits)
- bus->sdcnt.fc_xoff++;
-
- if (bus->flowcontrol & ~fcbits)
- bus->sdcnt.fc_xon++;
-
- bus->sdcnt.fc_rcvd++;
- bus->flowcontrol = fcbits;
- }
-
- /* Check and update sequence number */
- if (rxseq != seq) {
- brcmf_dbg(INFO, "(nextlen): rx_seq %d, expected %d\n",
- seq, rxseq);
- bus->sdcnt.rx_badseq++;
- rxseq = seq;
- }
-
- /* 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;
- brcmf_dbg_hex_dump(BRCMF_BYTES_ON() && BRCMF_DATA_ON(),
- rxbuf, len, "Rx Data:\n");
- brcmf_dbg_hex_dump(!(BRCMF_BYTES_ON() &&
- BRCMF_DATA_ON()) &&
- BRCMF_HDRS_ON(),
+ brcmf_dbg_hex_dump(BRCMF_BYTES_ON() || BRCMF_HDRS_ON(),
bus->rxhdr, SDPCM_HDRLEN,
"RxHdr:\n");
- 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;
+ if (brcmf_sdio_hdparser(bus, bus->rxhdr, rd,
+ BRCMF_SDIO_FT_NORMAL)) {
+ sdio_release_host(bus->sdiodev->func[1]);
+ if (!bus->rxpending)
+ break;
+ else
+ continue;
}
- /* 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);
+ if (rd->channel == SDPCM_CONTROL_CHANNEL) {
+ brcmf_sdbrcm_read_control(bus, bus->rxhdr,
+ rd->len,
+ rd->dat_offset);
+ /* prepare the descriptor for the next read */
+ rd->len = rd->len_nxtfrm << 4;
+ rd->len_nxtfrm = 0;
+ /* treat all packet as event if we don't know */
+ rd->channel = SDPCM_EVENT_CHANNEL;
+ sdio_release_host(bus->sdiodev->func[1]);
continue;
}
-
- /* All done with this one -- now deliver the packet */
- goto deliver;
+ rd->len_left = rd->len > BRCMF_FIRSTREAD ?
+ rd->len - BRCMF_FIRSTREAD : 0;
+ head_read = BRCMF_FIRSTREAD;
}
- /* Read frame header (hardware and software) */
- sdret = brcmf_sdcard_recv_buf(bus->sdiodev, bus->sdiodev->sbwad,
- SDIO_FUNC_2, F2SYNC, bus->rxhdr,
- BRCMF_FIRSTREAD);
- bus->sdcnt.f2rxhdrs++;
+ brcmf_pad(bus, &pad, &rd->len_left);
- if (sdret < 0) {
- brcmf_dbg(ERROR, "RXHEADER FAILED: %d\n", sdret);
- bus->sdcnt.rx_hdrfail++;
- brcmf_sdbrcm_rxfail(bus, true, true);
- continue;
- }
- brcmf_dbg_hex_dump(BRCMF_BYTES_ON() || BRCMF_HDRS_ON(),
- bus->rxhdr, SDPCM_HDRLEN, "RxHdr:\n");
-
-
- /* 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;
- }
-
- /* Validate check bytes */
- if ((u16) ~(len ^ check)) {
- brcmf_dbg(ERROR, "HW hdr err: len/check 0x%04x/0x%04x\n",
- len, check);
- bus->sdcnt.rx_badhdr++;
- brcmf_sdbrcm_rxfail(bus, false, false);
- continue;
- }
-
- /* Validate frame length */
- if (len < SDPCM_HDRLEN) {
- brcmf_dbg(ERROR, "HW hdr length invalid: %d\n", len);
- continue;
- }
-
- /* 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]);
-
- /* 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->sdcnt.rx_badhdr++;
- brcmf_sdbrcm_rxfail(bus, false, false);
- continue;
- }
-
- /* 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;
- }
-
- /* Handle Flow Control */
- fcbits = SDPCM_FCMASK_VALUE(&bus->rxhdr[SDPCM_FRAMETAG_LEN]);
-
- if (bus->flowcontrol != fcbits) {
- if (~bus->flowcontrol & fcbits)
- bus->sdcnt.fc_xoff++;
-
- if (bus->flowcontrol & ~fcbits)
- bus->sdcnt.fc_xon++;
-
- bus->sdcnt.fc_rcvd++;
- bus->flowcontrol = fcbits;
- }
-
- /* Check and update sequence number */
- if (rxseq != seq) {
- brcmf_dbg(INFO, "rx_seq %d, expected %d\n", seq, rxseq);
- bus->sdcnt.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;
-
- /* Call a separate function for control frames */
- if (chan == SDPCM_CONTROL_CHANNEL) {
- brcmf_sdbrcm_read_control(bus, bus->rxhdr, len, doff);
- continue;
- }
-
- /* precondition: chan is either SDPCM_DATA_CHANNEL,
- SDPCM_EVENT_CHANNEL, SDPCM_TEST_CHANNEL or
- SDPCM_GLOM_CHANNEL */
-
- /* Length to read */
- rdlen = (len > BRCMF_FIRSTREAD) ? (len - BRCMF_FIRSTREAD) : 0;
-
- /* 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 + BRCMF_FIRSTREAD) < MAX_RX_DATASZ))
- rdlen += pad;
- } else if (rdlen % BRCMF_SDALIGN) {
- rdlen += BRCMF_SDALIGN - (rdlen % BRCMF_SDALIGN);
- }
-
- /* Satisfy length-alignment requirements */
- if (rdlen & (ALIGNMENT - 1))
- rdlen = roundup(rdlen, ALIGNMENT);
-
- if ((rdlen + BRCMF_FIRSTREAD) > MAX_RX_DATASZ) {
- /* Too long -- skip this frame */
- brcmf_dbg(ERROR, "too long: len %d rdlen %d\n",
- len, rdlen);
- bus->sdiodev->bus_if->dstats.rx_errors++;
- bus->sdcnt.rx_toolong++;
- brcmf_sdbrcm_rxfail(bus, false, false);
- continue;
- }
-
- pkt = brcmu_pkt_buf_get_skb(rdlen +
- BRCMF_FIRSTREAD + BRCMF_SDALIGN);
+ pkt = brcmu_pkt_buf_get_skb(rd->len_left + head_read +
+ 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);
+ brcmf_dbg(ERROR, "brcmu_pkt_buf_get_skb failed\n");
bus->sdiodev->bus_if->dstats.rx_dropped++;
- brcmf_sdbrcm_rxfail(bus, false, RETRYCHAN(chan));
+ brcmf_sdbrcm_rxfail(bus, false,
+ RETRYCHAN(rd->channel));
+ sdio_release_host(bus->sdiodev->func[1]);
continue;
}
+ skb_pull(pkt, head_read);
+ pkt_align(pkt, rd->len_left, BRCMF_SDALIGN);
- /* Leave room for what we already read, and align remainder */
- skb_pull(pkt, BRCMF_FIRSTREAD);
- pkt_align(pkt, rdlen, BRCMF_SDALIGN);
-
- /* Read the remaining frame data */
sdret = brcmf_sdcard_recv_pkt(bus->sdiodev, bus->sdiodev->sbwad,
SDIO_FUNC_2, F2SYNC, pkt);
bus->sdcnt.f2rxdata++;
+ sdio_release_host(bus->sdiodev->func[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);
+ brcmf_dbg(ERROR, "read %d bytes from channel %d failed: %d\n",
+ rd->len, rd->channel, sdret);
brcmu_pkt_buf_free_skb(pkt);
bus->sdiodev->bus_if->dstats.rx_errors++;
- brcmf_sdbrcm_rxfail(bus, true, RETRYCHAN(chan));
+ sdio_claim_host(bus->sdiodev->func[1]);
+ brcmf_sdbrcm_rxfail(bus, true,
+ RETRYCHAN(rd->channel));
+ sdio_release_host(bus->sdiodev->func[1]);
continue;
}
- /* Copy the already-read portion */
- skb_push(pkt, BRCMF_FIRSTREAD);
- memcpy(pkt->data, bus->rxhdr, BRCMF_FIRSTREAD);
+ if (head_read) {
+ skb_push(pkt, head_read);
+ memcpy(pkt->data, bus->rxhdr, head_read);
+ head_read = 0;
+ } else {
+ memcpy(bus->rxhdr, pkt->data, SDPCM_HDRLEN);
+ rd_new.seq_num = rd->seq_num;
+ sdio_claim_host(bus->sdiodev->func[1]);
+ if (brcmf_sdio_hdparser(bus, bus->rxhdr, &rd_new,
+ BRCMF_SDIO_FT_NORMAL)) {
+ rd->len = 0;
+ brcmu_pkt_buf_free_skb(pkt);
+ }
+ bus->sdcnt.rx_readahead_cnt++;
+ if (rd->len != roundup(rd_new.len, 16)) {
+ brcmf_dbg(ERROR, "frame length mismatch:read %d, should be %d\n",
+ rd->len,
+ roundup(rd_new.len, 16) >> 4);
+ rd->len = 0;
+ brcmf_sdbrcm_rxfail(bus, true, true);
+ sdio_release_host(bus->sdiodev->func[1]);
+ brcmu_pkt_buf_free_skb(pkt);
+ continue;
+ }
+ sdio_release_host(bus->sdiodev->func[1]);
+ rd->len_nxtfrm = rd_new.len_nxtfrm;
+ rd->channel = rd_new.channel;
+ rd->dat_offset = rd_new.dat_offset;
+
+ brcmf_dbg_hex_dump(!(BRCMF_BYTES_ON() &&
+ BRCMF_DATA_ON()) &&
+ BRCMF_HDRS_ON(),
+ bus->rxhdr, SDPCM_HDRLEN,
+ "RxHdr:\n");
+
+ if (rd_new.channel == SDPCM_CONTROL_CHANNEL) {
+ brcmf_dbg(ERROR, "readahead on control packet %d?\n",
+ rd_new.seq_num);
+ /* Force retry w/normal header read */
+ rd->len = 0;
+ sdio_claim_host(bus->sdiodev->func[1]);
+ brcmf_sdbrcm_rxfail(bus, false, true);
+ sdio_release_host(bus->sdiodev->func[1]);
+ brcmu_pkt_buf_free_skb(pkt);
+ continue;
+ }
+ }
brcmf_dbg_hex_dump(BRCMF_BYTES_ON() && BRCMF_DATA_ON(),
- pkt->data, len, "Rx Data:\n");
+ pkt->data, rd->len, "Rx Data:\n");
-deliver:
/* Save superframe descriptor and allocate packet frame */
- if (chan == SDPCM_GLOM_CHANNEL) {
+ if (rd->channel == SDPCM_GLOM_CHANNEL) {
if (SDPCM_GLOMDESC(&bus->rxhdr[SDPCM_FRAMETAG_LEN])) {
brcmf_dbg(GLOM, "glom descriptor, %d bytes:\n",
- len);
+ rd->len);
brcmf_dbg_hex_dump(BRCMF_GLOM_ON(),
- pkt->data, len,
+ pkt->data, rd->len,
"Glom Data:\n");
- __skb_trim(pkt, len);
+ __skb_trim(pkt, rd->len);
skb_pull(pkt, SDPCM_HDRLEN);
bus->glomd = pkt;
} else {
brcmf_dbg(ERROR, "%s: glom superframe w/o "
"descriptor!\n", __func__);
+ sdio_claim_host(bus->sdiodev->func[1]);
brcmf_sdbrcm_rxfail(bus, false, false);
+ sdio_release_host(bus->sdiodev->func[1]);
}
+ /* prepare the descriptor for the next read */
+ rd->len = rd->len_nxtfrm << 4;
+ rd->len_nxtfrm = 0;
+ /* treat all packet as event if we don't know */
+ rd->channel = SDPCM_EVENT_CHANNEL;
continue;
}
/* Fill in packet len and prio, deliver upward */
- __skb_trim(pkt, len);
- skb_pull(pkt, doff);
+ __skb_trim(pkt, rd->len);
+ skb_pull(pkt, rd->dat_offset);
+
+ /* prepare the descriptor for the next read */
+ rd->len = rd->len_nxtfrm << 4;
+ rd->len_nxtfrm = 0;
+ /* treat all packet as event if we don't know */
+ rd->channel = SDPCM_EVENT_CHANNEL;
if (pkt->len == 0) {
brcmu_pkt_buf_free_skb(pkt);
continue;
}
- /* Unlock during rx call */
- up(&bus->sdsem);
brcmf_rx_packet(bus->sdiodev->dev, ifidx, pkt);
- down(&bus->sdsem);
}
+
rxcount = maxframes - rxleft;
/* Message if we hit the limit */
if (!rxleft)
- brcmf_dbg(DATA, "hit rx limit of %d frames\n",
- maxframes);
+ brcmf_dbg(DATA, "hit rx limit of %d frames\n", maxframes);
else
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;
+ rd->seq_num--;
+ bus->rx_seq = rd->seq_num;
return rxcount;
}
-static void
-brcmf_sdbrcm_wait_for_event(struct brcmf_sdio *bus, bool *lockvar)
-{
- up(&bus->sdsem);
- wait_event_interruptible_timeout(bus->ctrl_wait, !*lockvar, HZ * 2);
- down(&bus->sdsem);
- return;
-}
-
static void
brcmf_sdbrcm_wait_event_wakeup(struct brcmf_sdio *bus)
{
if (len & (ALIGNMENT - 1))
len = roundup(len, ALIGNMENT);
+ sdio_claim_host(bus->sdiodev->func[1]);
ret = brcmf_sdcard_send_pkt(bus->sdiodev, bus->sdiodev->sbwad,
SDIO_FUNC_2, F2SYNC, pkt);
bus->sdcnt.f2txdata++;
}
}
+ sdio_release_host(bus->sdiodev->func[1]);
if (ret == 0)
bus->tx_seq = (bus->tx_seq + 1) % SDPCM_SEQUENCE_WRAP;
done:
/* restore pkt buffer pointer before calling tx complete routine */
skb_pull(pkt, SDPCM_HDRLEN + pad);
- up(&bus->sdsem);
brcmf_txcomplete(bus->sdiodev->dev, pkt, ret != 0);
- down(&bus->sdsem);
if (free_pkt)
brcmu_pkt_buf_free_skb(pkt);
/* In poll mode, need to check for other events */
if (!bus->intr && cnt) {
/* Check device status, signal pending interrupt */
+ sdio_claim_host(bus->sdiodev->func[1]);
ret = r_sdreg32(bus, &intstatus,
offsetof(struct sdpcmd_regs,
intstatus));
+ sdio_release_host(bus->sdiodev->func[1]);
bus->sdcnt.f2txdata++;
if (ret != 0)
break;
if (intstatus & bus->hostintmask)
- bus->ipend = true;
+ atomic_set(&bus->ipend, 1);
}
}
if (bus->sdiodev->bus_if->drvr_up &&
(bus->sdiodev->bus_if->state == BRCMF_BUS_DATA) &&
bus->txoff && (pktq_len(&bus->txq) < TXLOW)) {
- bus->txoff = OFF;
- brcmf_txflowcontrol(bus->sdiodev->dev, 0, OFF);
+ bus->txoff = false;
+ brcmf_txflowblock(bus->sdiodev->dev, false);
}
return cnt;
bus->watchdog_tsk = NULL;
}
- if (bus->dpc_tsk && bus->dpc_tsk != current) {
- send_sig(SIGTERM, bus->dpc_tsk, 1);
- kthread_stop(bus->dpc_tsk);
- bus->dpc_tsk = NULL;
- }
-
- down(&bus->sdsem);
-
- bus_wake(bus);
+ sdio_claim_host(bus->sdiodev->func[1]);
/* Enable clock for device interrupts */
brcmf_sdbrcm_clkctl(bus, CLK_AVAIL, false);
/* Turn off the backplane clock (only) */
brcmf_sdbrcm_clkctl(bus, CLK_SDONLY, false);
+ sdio_release_host(bus->sdiodev->func[1]);
/* Clear the data packet queues */
brcmu_pktq_flush(&bus->txq, true, NULL, NULL);
brcmf_sdbrcm_free_glom(bus);
/* Clear rx control and wake any waiters */
+ spin_lock_bh(&bus->rxctl_lock);
bus->rxlen = 0;
+ spin_unlock_bh(&bus->rxctl_lock);
brcmf_sdbrcm_dcmd_resp_wake(bus);
/* Reset some F2 state stuff */
bus->rxskip = false;
bus->tx_seq = bus->rx_seq = 0;
-
- up(&bus->sdsem);
}
#ifdef CONFIG_BRCMFMAC_SDIO_OOB
unsigned long flags;
spin_lock_irqsave(&bus->sdiodev->irq_en_lock, flags);
- if (!bus->sdiodev->irq_en && !bus->ipend) {
+ if (!bus->sdiodev->irq_en && !atomic_read(&bus->ipend)) {
enable_irq(bus->sdiodev->irq);
bus->sdiodev->irq_en = true;
}
}
#endif /* CONFIG_BRCMFMAC_SDIO_OOB */
-static bool brcmf_sdbrcm_dpc(struct brcmf_sdio *bus)
+static inline void brcmf_sdbrcm_adddpctsk(struct brcmf_sdio *bus)
{
- u32 intstatus, newstatus = 0;
+ struct list_head *new_hd;
+ unsigned long flags;
+
+ if (in_interrupt())
+ new_hd = kzalloc(sizeof(struct list_head), GFP_ATOMIC);
+ else
+ new_hd = kzalloc(sizeof(struct list_head), GFP_KERNEL);
+ if (new_hd == NULL)
+ return;
+
+ spin_lock_irqsave(&bus->dpc_tl_lock, flags);
+ list_add_tail(new_hd, &bus->dpc_tsklst);
+ spin_unlock_irqrestore(&bus->dpc_tl_lock, flags);
+}
+
+static int brcmf_sdio_intr_rstatus(struct brcmf_sdio *bus)
+{
+ u8 idx;
+ u32 addr;
+ unsigned long val;
+ int n, ret;
+
+ idx = brcmf_sdio_chip_getinfidx(bus->ci, BCMA_CORE_SDIO_DEV);
+ addr = bus->ci->c_inf[idx].base +
+ offsetof(struct sdpcmd_regs, intstatus);
+
+ ret = brcmf_sdio_regrw_helper(bus->sdiodev, addr, &val, false);
+ bus->sdcnt.f1regdata++;
+ if (ret != 0)
+ val = 0;
+
+ val &= bus->hostintmask;
+ atomic_set(&bus->fcstate, !!(val & I_HMB_FC_STATE));
+
+ /* Clear interrupts */
+ if (val) {
+ ret = brcmf_sdio_regrw_helper(bus->sdiodev, addr, &val, true);
+ bus->sdcnt.f1regdata++;
+ }
+
+ if (ret) {
+ atomic_set(&bus->intstatus, 0);
+ } else if (val) {
+ for_each_set_bit(n, &val, 32)
+ set_bit(n, (unsigned long *)&bus->intstatus.counter);
+ }
+
+ return ret;
+}
+
+static void brcmf_sdbrcm_dpc(struct brcmf_sdio *bus)
+{
+ u32 newstatus = 0;
+ unsigned long intstatus;
uint rxlimit = bus->rxbound; /* Rx frames to read before resched */
uint txlimit = bus->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 */
- int err;
+ int err = 0, n;
brcmf_dbg(TRACE, "Enter\n");
- /* Start with leftover status bits */
- intstatus = bus->intstatus;
-
- down(&bus->sdsem);
+ sdio_claim_host(bus->sdiodev->func[1]);
/* If waiting for HTAVAIL, check status */
if (bus->clkstate == CLK_PENDING) {
bus->sdiodev->bus_if->state = BRCMF_BUS_DOWN;
}
bus->clkstate = CLK_AVAIL;
- } else {
- goto clkwait;
}
}
- 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;
- err = r_sdreg32(bus, &newstatus,
- offsetof(struct sdpcmd_regs, intstatus));
- bus->sdcnt.f1regdata++;
- if (err != 0)
- newstatus = 0;
- newstatus &= bus->hostintmask;
- bus->fcstate = !!(newstatus & I_HMB_FC_STATE);
- if (newstatus) {
- err = w_sdreg32(bus, newstatus,
- offsetof(struct sdpcmd_regs,
- intstatus));
- bus->sdcnt.f1regdata++;
- }
+ if (atomic_read(&bus->ipend) > 0) {
+ atomic_set(&bus->ipend, 0);
+ err = brcmf_sdio_intr_rstatus(bus);
}
- /* Merge new bits with previous */
- intstatus |= newstatus;
- bus->intstatus = 0;
+ /* Start with leftover status bits */
+ intstatus = atomic_xchg(&bus->intstatus, 0);
/* Handle flow-control change: read new state in case our ack
* crossed another change interrupt. If change still set, assume
err = r_sdreg32(bus, &newstatus,
offsetof(struct sdpcmd_regs, intstatus));
bus->sdcnt.f1regdata += 2;
- bus->fcstate =
- !!(newstatus & (I_HMB_FC_STATE | I_HMB_FC_CHANGE));
+ atomic_set(&bus->fcstate,
+ !!(newstatus & (I_HMB_FC_STATE | I_HMB_FC_CHANGE)));
intstatus |= (newstatus & bus->hostintmask);
}
intstatus |= brcmf_sdbrcm_hostmail(bus);
}
+ sdio_release_host(bus->sdiodev->func[1]);
+
/* 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_HMB_FRAME_IND;
/* On frame indication, read available frames */
- if (PKT_AVAILABLE()) {
- framecnt = brcmf_sdbrcm_readframes(bus, rxlimit, &rxdone);
- if (rxdone || bus->rxskip)
+ if (PKT_AVAILABLE() && bus->clkstate == CLK_AVAIL) {
+ framecnt = brcmf_sdio_readframes(bus, rxlimit);
+ if (!bus->rxpending)
intstatus &= ~I_HMB_FRAME_IND;
rxlimit -= min(framecnt, rxlimit);
}
/* Keep still-pending events for next scheduling */
- bus->intstatus = intstatus;
+ if (intstatus) {
+ for_each_set_bit(n, &intstatus, 32)
+ set_bit(n, (unsigned long *)&bus->intstatus.counter);
+ }
-clkwait:
brcmf_sdbrcm_clrintr(bus);
if (data_ok(bus) && bus->ctrl_frame_stat &&
(bus->clkstate == CLK_AVAIL)) {
- int ret, i;
+ int i;
- ret = brcmf_sdcard_send_buf(bus->sdiodev, bus->sdiodev->sbwad,
+ sdio_claim_host(bus->sdiodev->func[1]);
+ err = brcmf_sdcard_send_buf(bus->sdiodev, bus->sdiodev->sbwad,
SDIO_FUNC_2, F2SYNC, bus->ctrl_frame_buf,
(u32) bus->ctrl_frame_len);
- if (ret < 0) {
+ if (err < 0) {
/* On failure, abort the command and
terminate the frame */
brcmf_dbg(INFO, "sdio error %d, abort command and terminate frame\n",
- ret);
+ err);
bus->sdcnt.tx_sderrs++;
brcmf_sdcard_abort(bus->sdiodev, SDIO_FUNC_2);
break;
}
- }
- if (ret == 0)
+ } else {
bus->tx_seq = (bus->tx_seq + 1) % SDPCM_SEQUENCE_WRAP;
-
- brcmf_dbg(INFO, "Return_dpc value is : %d\n", ret);
+ }
+ sdio_release_host(bus->sdiodev->func[1]);
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 &&
+ else if ((bus->clkstate == CLK_AVAIL) && !atomic_read(&bus->fcstate) &&
brcmu_pktq_mlen(&bus->txq, ~bus->flowcontrol) && txlimit
&& data_ok(bus)) {
- framecnt = rxdone ? txlimit : min(txlimit, bus->txminmax);
+ framecnt = bus->rxpending ? min(txlimit, bus->txminmax) :
+ txlimit;
framecnt = brcmf_sdbrcm_sendfromq(bus, framecnt);
txlimit -= framecnt;
}
- /* 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->sdiodev->bus_if->state == BRCMF_BUS_DOWN) || (err != 0)) {
brcmf_dbg(ERROR, "failed backplane access over SDIO, halting operation\n");
bus->sdiodev->bus_if->state = 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;
+ atomic_set(&bus->intstatus, 0);
+ } else if (atomic_read(&bus->intstatus) ||
+ atomic_read(&bus->ipend) > 0 ||
+ (!atomic_read(&bus->fcstate) &&
+ brcmu_pktq_mlen(&bus->txq, ~bus->flowcontrol) &&
+ data_ok(bus)) || PKT_AVAILABLE()) {
+ brcmf_sdbrcm_adddpctsk(bus);
}
- bus->dpc_sched = resched;
-
/* If we're done for now, turn off clock request. */
if ((bus->clkstate != CLK_PENDING)
&& bus->idletime == BRCMF_IDLE_IMMEDIATE) {
bus->activity = false;
+ sdio_claim_host(bus->sdiodev->func[1]);
brcmf_sdbrcm_clkctl(bus, CLK_NONE, false);
+ sdio_release_host(bus->sdiodev->func[1]);
}
-
- up(&bus->sdsem);
-
- return resched;
-}
-
-static inline void brcmf_sdbrcm_adddpctsk(struct brcmf_sdio *bus)
-{
- struct list_head *new_hd;
- unsigned long flags;
-
- if (in_interrupt())
- new_hd = kzalloc(sizeof(struct list_head), GFP_ATOMIC);
- else
- new_hd = kzalloc(sizeof(struct list_head), GFP_KERNEL);
- if (new_hd == NULL)
- return;
-
- spin_lock_irqsave(&bus->dpc_tl_lock, flags);
- list_add_tail(new_hd, &bus->dpc_tsklst);
- spin_unlock_irqrestore(&bus->dpc_tl_lock, flags);
-}
-
-static int brcmf_sdbrcm_dpc_thread(void *data)
-{
- struct brcmf_sdio *bus = (struct brcmf_sdio *) data;
- struct list_head *cur_hd, *tmp_hd;
- unsigned long flags;
-
- allow_signal(SIGTERM);
- /* Run until signal received */
- while (1) {
- if (kthread_should_stop())
- break;
-
- if (list_empty(&bus->dpc_tsklst))
- if (wait_for_completion_interruptible(&bus->dpc_wait))
- break;
-
- spin_lock_irqsave(&bus->dpc_tl_lock, flags);
- list_for_each_safe(cur_hd, tmp_hd, &bus->dpc_tsklst) {
- spin_unlock_irqrestore(&bus->dpc_tl_lock, flags);
-
- if (bus->sdiodev->bus_if->state == BRCMF_BUS_DOWN) {
- /* after stopping the bus, exit thread */
- brcmf_sdbrcm_bus_stop(bus->sdiodev->dev);
- bus->dpc_tsk = NULL;
- spin_lock_irqsave(&bus->dpc_tl_lock, flags);
- break;
- }
-
- if (brcmf_sdbrcm_dpc(bus))
- brcmf_sdbrcm_adddpctsk(bus);
-
- spin_lock_irqsave(&bus->dpc_tl_lock, flags);
- list_del(cur_hd);
- kfree(cur_hd);
- }
- spin_unlock_irqrestore(&bus->dpc_tl_lock, flags);
- }
- return 0;
}
static int brcmf_sdbrcm_bus_txdata(struct device *dev, struct sk_buff *pkt)
struct brcmf_bus *bus_if = dev_get_drvdata(dev);
struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
struct brcmf_sdio *bus = sdiodev->bus;
+ unsigned long flags;
brcmf_dbg(TRACE, "Enter\n");
spin_unlock_bh(&bus->txqlock);
if (pktq_len(&bus->txq) >= TXHI) {
- bus->txoff = ON;
- brcmf_txflowcontrol(bus->sdiodev->dev, 0, ON);
+ bus->txoff = true;
+ brcmf_txflowblock(bus->sdiodev->dev, true);
}
#ifdef DEBUG
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 (!bus->dpc_sched) {
- bus->dpc_sched = true;
- if (bus->dpc_tsk) {
- brcmf_sdbrcm_adddpctsk(bus);
- complete(&bus->dpc_wait);
- }
+
+ spin_lock_irqsave(&bus->dpc_tl_lock, flags);
+ if (list_empty(&bus->dpc_tsklst)) {
+ spin_unlock_irqrestore(&bus->dpc_tl_lock, flags);
+
+ brcmf_sdbrcm_adddpctsk(bus);
+ queue_work(bus->brcmf_wq, &bus->datawork);
+ } else {
+ spin_unlock_irqrestore(&bus->dpc_tl_lock, flags);
}
return ret;
else
dsize = size;
+ sdio_claim_host(bus->sdiodev->func[1]);
+
/* Set the backplane window to include the start address */
bcmerror = brcmf_sdcard_set_sbaddr_window(bus->sdiodev, address);
if (bcmerror) {
brcmf_dbg(ERROR, "FAILED to set window back to 0x%x\n",
bus->sdiodev->sbwad);
+ sdio_release_host(bus->sdiodev->func[1]);
+
return bcmerror;
}
struct brcmf_bus *bus_if = dev_get_drvdata(dev);
struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
struct brcmf_sdio *bus = sdiodev->bus;
+ unsigned long flags;
brcmf_dbg(TRACE, "Enter\n");
/* precondition: IS_ALIGNED((unsigned long)frame, 2) */
- /* Need to lock here to protect txseq and SDIO tx calls */
- down(&bus->sdsem);
-
- bus_wake(bus);
-
/* Make sure backplane clock is on */
+ sdio_claim_host(bus->sdiodev->func[1]);
brcmf_sdbrcm_clkctl(bus, CLK_AVAIL, false);
+ sdio_release_host(bus->sdiodev->func[1]);
/* Hardware tag: 2 byte len followed by 2 byte ~len check (all LE) */
*(__le16 *) frame = cpu_to_le16((u16) msglen);
bus->ctrl_frame_buf = frame;
bus->ctrl_frame_len = len;
- brcmf_sdbrcm_wait_for_event(bus, &bus->ctrl_frame_stat);
+ wait_event_interruptible_timeout(bus->ctrl_wait,
+ !bus->ctrl_frame_stat,
+ msecs_to_jiffies(2000));
if (!bus->ctrl_frame_stat) {
brcmf_dbg(INFO, "ctrl_frame_stat == false\n");
frame, min_t(u16, len, 16), "TxHdr:\n");
do {
+ sdio_claim_host(bus->sdiodev->func[1]);
ret = brcmf_tx_frame(bus, frame, len);
+ sdio_release_host(bus->sdiodev->func[1]);
} while (ret < 0 && retries++ < TXRETRIES);
}
- if ((bus->idletime == BRCMF_IDLE_IMMEDIATE) && !bus->dpc_sched) {
+ spin_lock_irqsave(&bus->dpc_tl_lock, flags);
+ if ((bus->idletime == BRCMF_IDLE_IMMEDIATE) &&
+ list_empty(&bus->dpc_tsklst)) {
+ spin_unlock_irqrestore(&bus->dpc_tl_lock, flags);
+
bus->activity = false;
+ sdio_claim_host(bus->sdiodev->func[1]);
brcmf_sdbrcm_clkctl(bus, CLK_NONE, true);
+ sdio_release_host(bus->sdiodev->func[1]);
+ } else {
+ spin_unlock_irqrestore(&bus->dpc_tl_lock, flags);
}
- up(&bus->sdsem);
-
if (ret)
bus->sdcnt.tx_ctlerrs++;
else
* Read last word in socram to determine
* address of sdpcm_shared structure
*/
+ sdio_claim_host(bus->sdiodev->func[1]);
rv = brcmf_sdbrcm_membytes(bus, false, shaddr,
(u8 *)&addr_le, 4);
+ sdio_claim_host(bus->sdiodev->func[1]);
if (rv < 0)
return rv;
}
/* Read hndrte_shared structure */
+ sdio_claim_host(bus->sdiodev->func[1]);
rv = brcmf_sdbrcm_membytes(bus, false, addr, (u8 *)&sh_le,
sizeof(struct sdpcm_shared_le));
+ sdio_release_host(bus->sdiodev->func[1]);
if (rv < 0)
return rv;
if ((sh->flags & SDPCM_SHARED_TRAP) == 0)
return 0;
+ sdio_claim_host(bus->sdiodev->func[1]);
error = brcmf_sdbrcm_membytes(bus, false, sh->trap_addr, (u8 *)&tr,
sizeof(struct brcmf_trap_info));
if (error < 0)
return error;
nbytes = brcmf_sdio_dump_console(bus, sh, data, count);
+ sdio_release_host(bus->sdiodev->func[1]);
if (nbytes < 0)
return nbytes;
return 0;
}
+ sdio_claim_host(bus->sdiodev->func[1]);
if (sh->assert_file_addr != 0) {
error = brcmf_sdbrcm_membytes(bus, false, sh->assert_file_addr,
(u8 *)file, 80);
if (error < 0)
return error;
}
+ sdio_release_host(bus->sdiodev->func[1]);
res = scnprintf(buf, sizeof(buf),
"dongle assert: %s:%d: assert(%s)\n",
int error;
struct sdpcm_shared sh;
- down(&bus->sdsem);
error = brcmf_sdio_readshared(bus, &sh);
- up(&bus->sdsem);
if (error < 0)
return error;
if (pos != 0)
return 0;
- down(&bus->sdsem);
error = brcmf_sdio_readshared(bus, &sh);
if (error < 0)
goto done;
error += nbytes;
*ppos += error;
done:
- up(&bus->sdsem);
return error;
}
int timeleft;
uint rxlen = 0;
bool pending;
+ u8 *buf;
struct brcmf_bus *bus_if = dev_get_drvdata(dev);
struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
struct brcmf_sdio *bus = sdiodev->bus;
/* Wait until control frame is available */
timeleft = brcmf_sdbrcm_dcmd_resp_wait(bus, &bus->rxlen, &pending);
- down(&bus->sdsem);
+ spin_lock_bh(&bus->rxctl_lock);
rxlen = bus->rxlen;
memcpy(msg, bus->rxctl, min(msglen, rxlen));
+ bus->rxctl = NULL;
+ buf = bus->rxctl_orig;
+ bus->rxctl_orig = NULL;
bus->rxlen = 0;
- up(&bus->sdsem);
+ spin_unlock_bh(&bus->rxctl_lock);
+ vfree(buf);
if (rxlen) {
brcmf_dbg(CTL, "resumed on rxctl frame, got %d expected %d\n",
{
bool ret;
- /* Download the firmware */
+ sdio_claim_host(bus->sdiodev->func[1]);
+
brcmf_sdbrcm_clkctl(bus, CLK_AVAIL, false);
ret = _brcmf_sdbrcm_download_firmware(bus) == 0;
brcmf_sdbrcm_clkctl(bus, CLK_SDONLY, false);
+ sdio_release_host(bus->sdiodev->func[1]);
+
return ret;
}
bus->sdcnt.tickcnt = 0;
brcmf_sdbrcm_wd_timer(bus, BRCMF_WD_POLL_MS);
- down(&bus->sdsem);
+ sdio_claim_host(bus->sdiodev->func[1]);
/* Make sure backplane clock is on, needed to generate F2 interrupt */
brcmf_sdbrcm_clkctl(bus, CLK_AVAIL, false);
brcmf_sdbrcm_clkctl(bus, CLK_NONE, false);
exit:
- up(&bus->sdsem);
+ sdio_release_host(bus->sdiodev->func[1]);
return ret;
}
}
/* Count the interrupt call */
bus->sdcnt.intrcount++;
- bus->ipend = true;
-
- /* Shouldn't get this interrupt if we're sleeping? */
- if (bus->sleeping) {
- brcmf_dbg(ERROR, "INTERRUPT WHILE SLEEPING??\n");
- return;
- }
+ if (in_interrupt())
+ atomic_set(&bus->ipend, 1);
+ else
+ if (brcmf_sdio_intr_rstatus(bus)) {
+ brcmf_dbg(ERROR, "failed backplane access\n");
+ bus->sdiodev->bus_if->state = BRCMF_BUS_DOWN;
+ }
/* Disable additional interrupts (is this needed now)? */
if (!bus->intr)
brcmf_dbg(ERROR, "isr w/o interrupt configured!\n");
- bus->dpc_sched = true;
- if (bus->dpc_tsk) {
- brcmf_sdbrcm_adddpctsk(bus);
- complete(&bus->dpc_wait);
- }
+ brcmf_sdbrcm_adddpctsk(bus);
+ queue_work(bus->brcmf_wq, &bus->datawork);
}
static bool brcmf_sdbrcm_bus_watchdog(struct brcmf_sdio *bus)
#ifdef DEBUG
struct brcmf_bus *bus_if = dev_get_drvdata(bus->sdiodev->dev);
#endif /* DEBUG */
+ unsigned long flags;
brcmf_dbg(TIMER, "Enter\n");
- /* Ignore the timer if simulating bus down */
- if (bus->sleeping)
- return false;
-
- down(&bus->sdsem);
-
/* Poll period: check device if appropriate. */
if (bus->poll && (++bus->polltick >= bus->pollrate)) {
u32 intstatus = 0;
if (!bus->intr ||
(bus->sdcnt.intrcount == bus->sdcnt.lastintrs)) {
- if (!bus->dpc_sched) {
+ spin_lock_irqsave(&bus->dpc_tl_lock, flags);
+ if (list_empty(&bus->dpc_tsklst)) {
u8 devpend;
+ spin_unlock_irqrestore(&bus->dpc_tl_lock,
+ flags);
+ sdio_claim_host(bus->sdiodev->func[1]);
devpend = brcmf_sdio_regrb(bus->sdiodev,
SDIO_CCCR_INTx,
NULL);
+ sdio_release_host(bus->sdiodev->func[1]);
intstatus =
devpend & (INTR_STATUS_FUNC1 |
INTR_STATUS_FUNC2);
+ } else {
+ spin_unlock_irqrestore(&bus->dpc_tl_lock,
+ flags);
}
/* If there is something, make like the ISR and
schedule the DPC */
if (intstatus) {
bus->sdcnt.pollcnt++;
- bus->ipend = true;
+ atomic_set(&bus->ipend, 1);
- bus->dpc_sched = true;
- if (bus->dpc_tsk) {
- brcmf_sdbrcm_adddpctsk(bus);
- complete(&bus->dpc_wait);
- }
+ brcmf_sdbrcm_adddpctsk(bus);
+ queue_work(bus->brcmf_wq, &bus->datawork);
}
}
}
#ifdef DEBUG
/* Poll for console output periodically */
- if (bus_if->state == BRCMF_BUS_DATA &&
+ if (bus_if && bus_if->state == BRCMF_BUS_DATA &&
bus->console_interval != 0) {
bus->console.count += BRCMF_WD_POLL_MS;
if (bus->console.count >= bus->console_interval) {
bus->console.count -= bus->console_interval;
+ sdio_claim_host(bus->sdiodev->func[1]);
/* Make sure backplane clock is on */
brcmf_sdbrcm_clkctl(bus, CLK_AVAIL, false);
if (brcmf_sdbrcm_readconsole(bus) < 0)
/* stop on error */
bus->console_interval = 0;
+ sdio_release_host(bus->sdiodev->func[1]);
}
}
#endif /* DEBUG */
bus->activity = false;
brcmf_sdbrcm_wd_timer(bus, BRCMF_WD_POLL_MS);
} else {
+ sdio_claim_host(bus->sdiodev->func[1]);
brcmf_sdbrcm_clkctl(bus, CLK_NONE, false);
+ sdio_release_host(bus->sdiodev->func[1]);
}
}
}
- up(&bus->sdsem);
-
- return bus->ipend;
+ return (atomic_read(&bus->ipend) > 0);
}
static bool brcmf_sdbrcm_chipmatch(u16 chipid)
{
+ if (chipid == BCM43241_CHIP_ID)
+ return true;
if (chipid == BCM4329_CHIP_ID)
return true;
if (chipid == BCM4330_CHIP_ID)
return false;
}
+static void brcmf_sdio_dataworker(struct work_struct *work)
+{
+ struct brcmf_sdio *bus = container_of(work, struct brcmf_sdio,
+ datawork);
+ struct list_head *cur_hd, *tmp_hd;
+ unsigned long flags;
+
+ spin_lock_irqsave(&bus->dpc_tl_lock, flags);
+ list_for_each_safe(cur_hd, tmp_hd, &bus->dpc_tsklst) {
+ spin_unlock_irqrestore(&bus->dpc_tl_lock, flags);
+
+ brcmf_sdbrcm_dpc(bus);
+
+ spin_lock_irqsave(&bus->dpc_tl_lock, flags);
+ list_del(cur_hd);
+ kfree(cur_hd);
+ }
+ spin_unlock_irqrestore(&bus->dpc_tl_lock, flags);
+}
+
static void brcmf_sdbrcm_release_malloc(struct brcmf_sdio *bus)
{
brcmf_dbg(TRACE, "Enter\n");
bus->alp_only = true;
+ sdio_claim_host(bus->sdiodev->func[1]);
+
pr_debug("F1 signature read @0x18000000=0x%4x\n",
brcmf_sdio_regrl(bus->sdiodev, SI_ENUM_BASE, NULL));
reg_val = brcmf_sdio_regrl(bus->sdiodev, reg_addr, NULL);
brcmf_sdio_regwl(bus->sdiodev, reg_addr, reg_val | CC_BPRESEN, NULL);
+ sdio_release_host(bus->sdiodev->func[1]);
+
brcmu_pktq_init(&bus->txq, (PRIOMASK + 1), TXQLEN);
/* Locate an appropriately-aligned portion of hdrbuf */
return true;
fail:
+ sdio_release_host(bus->sdiodev->func[1]);
return false;
}
{
brcmf_dbg(TRACE, "Enter\n");
+ sdio_claim_host(bus->sdiodev->func[1]);
+
/* Disable F2 to clear any intermediate frame state on the dongle */
brcmf_sdio_regwb(bus->sdiodev, SDIO_CCCR_IOEx,
SDIO_FUNC_ENABLE_1, NULL);
bus->sdiodev->bus_if->state = BRCMF_BUS_DOWN;
- bus->sleeping = false;
bus->rxflow = false;
/* Done with backplane-dependent accesses, can drop clock... */
brcmf_sdio_regwb(bus->sdiodev, SBSDIO_FUNC1_CHIPCLKCSR, 0, NULL);
+ sdio_release_host(bus->sdiodev->func[1]);
+
/* ...and initialize clock/power states */
bus->clkstate = CLK_SDONLY;
bus->idletime = BRCMF_IDLE_INTERVAL;
brcmf_dbg(TRACE, "Enter\n");
if (bus->ci) {
+ sdio_claim_host(bus->sdiodev->func[1]);
brcmf_sdbrcm_clkctl(bus, CLK_AVAIL, false);
brcmf_sdbrcm_clkctl(bus, CLK_NONE, false);
+ sdio_release_host(bus->sdiodev->func[1]);
brcmf_sdio_chip_detach(&bus->ci);
if (bus->vars && bus->varsz)
kfree(bus->vars);
/* De-register interrupt handler */
brcmf_sdio_intr_unregister(bus->sdiodev);
+ cancel_work_sync(&bus->datawork);
+ if (bus->brcmf_wq)
+ destroy_workqueue(bus->brcmf_wq);
+
if (bus->sdiodev->bus_if->drvr) {
brcmf_detach(bus->sdiodev->dev);
brcmf_sdbrcm_release_dongle(bus);
brcmf_dbg(TRACE, "Disconnected\n");
}
+static struct brcmf_bus_ops brcmf_sdio_bus_ops = {
+ .stop = brcmf_sdbrcm_bus_stop,
+ .init = brcmf_sdbrcm_bus_init,
+ .txdata = brcmf_sdbrcm_bus_txdata,
+ .txctl = brcmf_sdbrcm_bus_txctl,
+ .rxctl = brcmf_sdbrcm_bus_rxctl,
+};
+
void *brcmf_sdbrcm_probe(u32 regsva, struct brcmf_sdio_dev *sdiodev)
{
int ret;
bus->rxbound = BRCMF_RXBOUND;
bus->txminmax = BRCMF_TXMINMAX;
bus->tx_seq = SDPCM_SEQUENCE_WRAP - 1;
- bus->usebufpool = false; /* Use bufpool if allocated,
- else use locally malloced rxbuf */
+
+ INIT_WORK(&bus->datawork, brcmf_sdio_dataworker);
+ bus->brcmf_wq = create_singlethread_workqueue("brcmf_wq");
+ if (bus->brcmf_wq == NULL) {
+ brcmf_dbg(ERROR, "insufficient memory to create txworkqueue\n");
+ goto fail;
+ }
/* attempt to attach to the dongle */
if (!(brcmf_sdbrcm_probe_attach(bus, regsva))) {
goto fail;
}
+ spin_lock_init(&bus->rxctl_lock);
spin_lock_init(&bus->txqlock);
init_waitqueue_head(&bus->ctrl_wait);
init_waitqueue_head(&bus->dcmd_resp_wait);
bus->timer.data = (unsigned long)bus;
bus->timer.function = brcmf_sdbrcm_watchdog;
- /* Initialize thread based operation and lock */
- sema_init(&bus->sdsem, 1);
-
/* Initialize watchdog thread */
init_completion(&bus->watchdog_wait);
bus->watchdog_tsk = kthread_run(brcmf_sdbrcm_watchdog_thread,
bus->watchdog_tsk = NULL;
}
/* Initialize DPC thread */
- init_completion(&bus->dpc_wait);
INIT_LIST_HEAD(&bus->dpc_tsklst);
spin_lock_init(&bus->dpc_tl_lock);
- bus->dpc_tsk = kthread_run(brcmf_sdbrcm_dpc_thread,
- bus, "brcmf_dpc");
- if (IS_ERR(bus->dpc_tsk)) {
- pr_warn("brcmf_dpc thread failed to start\n");
- bus->dpc_tsk = NULL;
- }
/* Assign bus interface call back */
- bus->sdiodev->bus_if->brcmf_bus_stop = brcmf_sdbrcm_bus_stop;
- bus->sdiodev->bus_if->brcmf_bus_init = brcmf_sdbrcm_bus_init;
- bus->sdiodev->bus_if->brcmf_bus_txdata = brcmf_sdbrcm_bus_txdata;
- bus->sdiodev->bus_if->brcmf_bus_txctl = brcmf_sdbrcm_bus_txctl;
- bus->sdiodev->bus_if->brcmf_bus_rxctl = brcmf_sdbrcm_bus_rxctl;
+ bus->sdiodev->bus_if->dev = bus->sdiodev->dev;
+ bus->sdiodev->bus_if->ops = &brcmf_sdio_bus_ops;
+
/* Attach to the brcmf/OS/network interface */
ret = brcmf_attach(SDPCM_RESERVE, bus->sdiodev->dev);
if (ret != 0) {
/* if firmware path present try to download and bring up bus */
ret = brcmf_bus_start(bus->sdiodev->dev);
if (ret != 0) {
- if (ret == -ENOLINK) {
- brcmf_dbg(ERROR, "dongle is not responding\n");
- goto fail;
- }
+ brcmf_dbg(ERROR, "dongle is not responding\n");
+ goto fail;
}
return bus;
projects / deliverable / linux.git / blobdiff