static int
musycc_dump_rxbuffer_ring(mch_t *ch, int lockit)
{
- struct mdesc *m;
- unsigned long flags = 0;
+ struct mdesc *m;
+ unsigned long flags = 0;
- u_int32_t status;
- int n;
+ u_int32_t status;
+ int n;
- if (lockit)
- spin_lock_irqsave(&ch->ch_rxlock, flags);
- if (ch->rxd_num == 0)
- pr_info(" ZERO receive buffers allocated for this channel.");
- else {
- FLUSH_MEM_READ();
- m = &ch->mdr[ch->rxix_irq_srv];
- for (n = ch->rxd_num; n; n--) {
- status = le32_to_cpu(m->status);
- {
- pr_info("%c %08lx[%2d]: sts %08x (%c%c%c%c:%d.) Data [%08x] Next [%08x]\n",
- (m == &ch->mdr[ch->rxix_irq_srv]) ? 'F' : ' ',
- (unsigned long) m, n,
- status,
- m->data ? (status & HOST_RX_OWNED ? 'H' : 'M') : '-',
- status & POLL_DISABLED ? 'P' : '-',
- status & EOBIRQ_ENABLE ? 'b' : '-',
- status & EOMIRQ_ENABLE ? 'm' : '-',
- status & LENGTH_MASK,
- le32_to_cpu(m->data), le32_to_cpu(m->next));
+ if (lockit)
+ spin_lock_irqsave(&ch->ch_rxlock, flags);
+ if (ch->rxd_num == 0)
+ pr_info(" ZERO receive buffers allocated for this channel.");
+ else {
+ FLUSH_MEM_READ();
+ m = &ch->mdr[ch->rxix_irq_srv];
+ for (n = ch->rxd_num; n; n--) {
+ status = le32_to_cpu(m->status);
+ {
+ pr_info("%c %08lx[%2d]: sts %08x (%c%c%c%c:%d.) Data [%08x] Next [%08x]\n",
+ (m == &ch->mdr[ch->rxix_irq_srv]) ? 'F' : ' ',
+ (unsigned long) m, n,
+ status,
+ m->data ? (status & HOST_RX_OWNED ? 'H' : 'M') : '-',
+ status & POLL_DISABLED ? 'P' : '-',
+ status & EOBIRQ_ENABLE ? 'b' : '-',
+ status & EOMIRQ_ENABLE ? 'm' : '-',
+ status & LENGTH_MASK,
+ le32_to_cpu(m->data), le32_to_cpu(m->next));
#ifdef RLD_DUMP_BUFDATA
- {
- u_int32_t *dp;
- int len = status & LENGTH_MASK;
+ {
+ u_int32_t *dp;
+ int len = status & LENGTH_MASK;
#if 1
- if (m->data && (status & HOST_RX_OWNED))
+ if (m->data && (status & HOST_RX_OWNED))
#else
- if (m->data) /* always dump regardless of valid RX
- * data */
+ if (m->data) /* always dump regardless of valid RX
+ * data */
#endif
- {
- dp = (u_int32_t *) OS_phystov((void *) (le32_to_cpu(m->data)));
- if (len >= 0x10)
- pr_info(" %x[%x]: %08X %08X %08X %08x\n", (u_int32_t) dp, len,
- *dp, *(dp + 1), *(dp + 2), *(dp + 3));
- else if (len >= 0x08)
- pr_info(" %x[%x]: %08X %08X\n", (u_int32_t) dp, len,
- *dp, *(dp + 1));
- else
- pr_info(" %x[%x]: %08X\n", (u_int32_t) dp, len, *dp);
- }
- }
+ {
+ dp = (u_int32_t *) OS_phystov((void *) (le32_to_cpu(m->data)));
+ if (len >= 0x10)
+ pr_info(" %x[%x]: %08X %08X %08X %08x\n", (u_int32_t) dp, len,
+ *dp, *(dp + 1), *(dp + 2), *(dp + 3));
+ else if (len >= 0x08)
+ pr_info(" %x[%x]: %08X %08X\n", (u_int32_t) dp, len,
+ *dp, *(dp + 1));
+ else
+ pr_info(" %x[%x]: %08X\n", (u_int32_t) dp, len, *dp);
+ }
+ }
#endif
- }
- m = m->snext;
- }
- } /* -for- */
- pr_info("\n");
+ }
+ m = m->snext;
+ }
+ } /* -for- */
+ pr_info("\n");
- if (lockit)
- spin_unlock_irqrestore(&ch->ch_rxlock, flags);
- return 0;
+ if (lockit)
+ spin_unlock_irqrestore(&ch->ch_rxlock, flags);
+ return 0;
}
#endif
static int
musycc_dump_txbuffer_ring(mch_t *ch, int lockit)
{
- struct mdesc *m;
- unsigned long flags = 0;
- u_int32_t status;
- int n;
-
- if (lockit)
- spin_lock_irqsave(&ch->ch_txlock, flags);
- if (ch->txd_num == 0)
- pr_info(" ZERO transmit buffers allocated for this channel.");
- else {
- FLUSH_MEM_READ();
- m = ch->txd_irq_srv;
- for (n = ch->txd_num; n; n--) {
- status = le32_to_cpu(m->status);
- {
- pr_info("%c%c %08lx[%2d]: sts %08x (%c%c%c%c:%d.) Data [%08x] Next [%08x]\n",
- (m == ch->txd_usr_add) ? 'F' : ' ',
- (m == ch->txd_irq_srv) ? 'L' : ' ',
- (unsigned long) m, n,
- status,
- m->data ? (status & MUSYCC_TX_OWNED ? 'M' : 'H') : '-',
- status & POLL_DISABLED ? 'P' : '-',
- status & EOBIRQ_ENABLE ? 'b' : '-',
- status & EOMIRQ_ENABLE ? 'm' : '-',
- status & LENGTH_MASK,
- le32_to_cpu(m->data), le32_to_cpu(m->next));
+ struct mdesc *m;
+ unsigned long flags = 0;
+ u_int32_t status;
+ int n;
+
+ if (lockit)
+ spin_lock_irqsave(&ch->ch_txlock, flags);
+ if (ch->txd_num == 0)
+ pr_info(" ZERO transmit buffers allocated for this channel.");
+ else {
+ FLUSH_MEM_READ();
+ m = ch->txd_irq_srv;
+ for (n = ch->txd_num; n; n--) {
+ status = le32_to_cpu(m->status);
+ {
+ pr_info("%c%c %08lx[%2d]: sts %08x (%c%c%c%c:%d.) Data [%08x] Next [%08x]\n",
+ (m == ch->txd_usr_add) ? 'F' : ' ',
+ (m == ch->txd_irq_srv) ? 'L' : ' ',
+ (unsigned long) m, n,
+ status,
+ m->data ? (status & MUSYCC_TX_OWNED ? 'M' : 'H') : '-',
+ status & POLL_DISABLED ? 'P' : '-',
+ status & EOBIRQ_ENABLE ? 'b' : '-',
+ status & EOMIRQ_ENABLE ? 'm' : '-',
+ status & LENGTH_MASK,
+ le32_to_cpu(m->data), le32_to_cpu(m->next));
#ifdef RLD_DUMP_BUFDATA
- {
- u_int32_t *dp;
- int len = status & LENGTH_MASK;
-
- if (m->data) {
- dp = (u_int32_t *) OS_phystov((void *) (le32_to_cpu(m->data)));
- if (len >= 0x10)
- pr_info(" %x[%x]: %08X %08X %08X %08x\n", (u_int32_t) dp, len,
- *dp, *(dp + 1), *(dp + 2), *(dp + 3));
- else if (len >= 0x08)
- pr_info(" %x[%x]: %08X %08X\n", (u_int32_t) dp, len,
- *dp, *(dp + 1));
- else
- pr_info(" %x[%x]: %08X\n", (u_int32_t) dp, len, *dp);
- }
- }
+ {
+ u_int32_t *dp;
+ int len = status & LENGTH_MASK;
+
+ if (m->data) {
+ dp = (u_int32_t *) OS_phystov((void *) (le32_to_cpu(m->data)));
+ if (len >= 0x10)
+ pr_info(" %x[%x]: %08X %08X %08X %08x\n", (u_int32_t) dp, len,
+ *dp, *(dp + 1), *(dp + 2), *(dp + 3));
+ else if (len >= 0x08)
+ pr_info(" %x[%x]: %08X %08X\n", (u_int32_t) dp, len,
+ *dp, *(dp + 1));
+ else
+ pr_info(" %x[%x]: %08X\n", (u_int32_t) dp, len, *dp);
+ }
+ }
#endif
- }
- m = m->snext;
- }
- } /* -for- */
- pr_info("\n");
+ }
+ m = m->snext;
+ }
+ } /* -for- */
+ pr_info("\n");
- if (lockit)
- spin_unlock_irqrestore(&ch->ch_txlock, flags);
- return 0;
+ if (lockit)
+ spin_unlock_irqrestore(&ch->ch_txlock, flags);
+ return 0;
}
#endif
status_t
musycc_dump_ring(ci_t *ci, unsigned int chan)
{
- mch_t *ch;
-
- if (chan >= MAX_CHANS_USED)
- return SBE_DRVR_FAIL; /* E2BIG */
- {
- int bh;
-
- bh = atomic_read(&ci->bh_pending);
- pr_info(">> bh_pend %d [%d] ihead %d itail %d [%d] th_cnt %d bh_cnt %d wdcnt %d note %d\n",
- bh, max_bh, ci->iqp_headx, ci->iqp_tailx, max_intcnt,
- ci->intlog.drvr_intr_thcount,
- ci->intlog.drvr_intr_bhcount,
- ci->wdcount, ci->wd_notify);
- max_bh = 0; /* reset counter */
- max_intcnt = 0; /* reset counter */
- }
-
- ch = sd_find_chan(dummy, chan);
- if (!ch) {
- pr_info(">> musycc_dump_ring: channel %d not up.\n", chan);
- return ENOENT;
- }
- pr_info(">> CI %p CHANNEL %3d @ %p: state %x status/p %x/%x\n", ci, chan, ch, ch->state,
- ch->status, ch->p.status);
- pr_info("--------------------------------\nTX Buffer Ring - Channel %d, txd_num %d. (bd/ch pend %d %d), TXD required %d, txpkt %lu\n",
- chan, ch->txd_num,
- (u_int32_t) atomic_read(&ci->tx_pending), (u_int32_t) atomic_read(&ch->tx_pending), ch->txd_required, ch->s.tx_packets);
- pr_info("++ User 0x%p IRQ_SRV 0x%p USR_ADD 0x%p QStopped %x, start_tx %x tx_full %d txd_free %d mode %x\n",
- ch->user, ch->txd_irq_srv, ch->txd_usr_add,
- sd_queue_stopped(ch->user),
- ch->ch_start_tx, ch->tx_full, ch->txd_free, ch->p.chan_mode);
- musycc_dump_txbuffer_ring(ch, 1);
- pr_info("RX Buffer Ring - Channel %d, rxd_num %d. IRQ_SRV[%d] 0x%p, start_rx %x rxpkt %lu\n",
- chan, ch->rxd_num, ch->rxix_irq_srv,
- &ch->mdr[ch->rxix_irq_srv], ch->ch_start_rx, ch->s.rx_packets);
- musycc_dump_rxbuffer_ring(ch, 1);
-
- return SBE_DRVR_SUCCESS;
+ mch_t *ch;
+
+ if (chan >= MAX_CHANS_USED)
+ return SBE_DRVR_FAIL; /* E2BIG */
+ {
+ int bh;
+
+ bh = atomic_read(&ci->bh_pending);
+ pr_info(">> bh_pend %d [%d] ihead %d itail %d [%d] th_cnt %d bh_cnt %d wdcnt %d note %d\n",
+ bh, max_bh, ci->iqp_headx, ci->iqp_tailx, max_intcnt,
+ ci->intlog.drvr_intr_thcount,
+ ci->intlog.drvr_intr_bhcount,
+ ci->wdcount, ci->wd_notify);
+ max_bh = 0; /* reset counter */
+ max_intcnt = 0; /* reset counter */
+ }
+
+ ch = sd_find_chan(dummy, chan);
+ if (!ch) {
+ pr_info(">> musycc_dump_ring: channel %d not up.\n", chan);
+ return ENOENT;
+ }
+ pr_info(">> CI %p CHANNEL %3d @ %p: state %x status/p %x/%x\n", ci, chan, ch, ch->state,
+ ch->status, ch->p.status);
+ pr_info("--------------------------------\nTX Buffer Ring - Channel %d, txd_num %d. (bd/ch pend %d %d), TXD required %d, txpkt %lu\n",
+ chan, ch->txd_num,
+ (u_int32_t) atomic_read(&ci->tx_pending), (u_int32_t) atomic_read(&ch->tx_pending), ch->txd_required, ch->s.tx_packets);
+ pr_info("++ User 0x%p IRQ_SRV 0x%p USR_ADD 0x%p QStopped %x, start_tx %x tx_full %d txd_free %d mode %x\n",
+ ch->user, ch->txd_irq_srv, ch->txd_usr_add,
+ sd_queue_stopped(ch->user),
+ ch->ch_start_tx, ch->tx_full, ch->txd_free, ch->p.chan_mode);
+ musycc_dump_txbuffer_ring(ch, 1);
+ pr_info("RX Buffer Ring - Channel %d, rxd_num %d. IRQ_SRV[%d] 0x%p, start_rx %x rxpkt %lu\n",
+ chan, ch->rxd_num, ch->rxix_irq_srv,
+ &ch->mdr[ch->rxix_irq_srv], ch->ch_start_rx, ch->s.rx_packets);
+ musycc_dump_rxbuffer_ring(ch, 1);
+
+ return SBE_DRVR_SUCCESS;
}
status_t
musycc_dump_rings(ci_t *ci, unsigned int start_chan)
{
- unsigned int chan;
+ unsigned int chan;
- for (chan = start_chan; chan < (start_chan + 5); chan++)
- musycc_dump_ring(ci, chan);
- return SBE_DRVR_SUCCESS;
+ for (chan = start_chan; chan < (start_chan + 5); chan++)
+ musycc_dump_ring(ci, chan);
+ return SBE_DRVR_SUCCESS;
}
void
musycc_init_mdt(mpi_t *pi)
{
- u_int32_t *addr, cfg;
- int i;
-
- /*
- * This Idle Code insertion takes effect prior to channel's first
- * transmitted message. After that, each message contains its own Idle
- * Code information which is to be issued after the message is
- * transmitted (Ref.MUSYCC 5.2.2.3: MCENBL bit in Group Configuration
- * Descriptor).
- */
-
- addr = (u_int32_t *) ((u_long) pi->reg + MUSYCC_MDT_BASE03_ADDR);
- cfg = CFG_CH_FLAG_7E << IDLE_CODE;
-
- for (i = 0; i < 32; addr++, i++)
- pci_write_32(addr, cfg);
+ u_int32_t *addr, cfg;
+ int i;
+
+ /*
+ * This Idle Code insertion takes effect prior to channel's first
+ * transmitted message. After that, each message contains its own Idle
+ * Code information which is to be issued after the message is
+ * transmitted (Ref.MUSYCC 5.2.2.3: MCENBL bit in Group Configuration
+ * Descriptor).
+ */
+
+ addr = (u_int32_t *) ((u_long) pi->reg + MUSYCC_MDT_BASE03_ADDR);
+ cfg = CFG_CH_FLAG_7E << IDLE_CODE;
+
+ for (i = 0; i < 32; addr++, i++)
+ pci_write_32(addr, cfg);
}
void
musycc_update_tx_thp(mch_t *ch)
{
- struct mdesc *md;
- unsigned long flags;
+ struct mdesc *md;
+ unsigned long flags;
- spin_lock_irqsave(&ch->ch_txlock, flags);
- while (1) {
- md = ch->txd_irq_srv;
- FLUSH_MEM_READ();
- if (!md->data) {
- /* No MDs with buffers to process */
- spin_unlock_irqrestore(&ch->ch_txlock, flags);
- return;
+ spin_lock_irqsave(&ch->ch_txlock, flags);
+ while (1) {
+ md = ch->txd_irq_srv;
+ FLUSH_MEM_READ();
+ if (!md->data) {
+ /* No MDs with buffers to process */
+ spin_unlock_irqrestore(&ch->ch_txlock, flags);
+ return;
+ }
+ if ((le32_to_cpu(md->status)) & MUSYCC_TX_OWNED) {
+ /* this is the MD to restart TX with */
+ break;
+ }
+ /*
+ * Otherwise, we have a valid, host-owned message descriptor which
+ * has been successfully transmitted and whose buffer can be freed,
+ * so... process this MD, it's owned by the host. (This might give
+ * as a new, updated txd_irq_srv.)
+ */
+ musycc_bh_tx_eom(ch->up, ch->gchan);
}
- if ((le32_to_cpu(md->status)) & MUSYCC_TX_OWNED) {
- /* this is the MD to restart TX with */
- break;
+ md = ch->txd_irq_srv;
+ ch->up->regram->thp[ch->gchan] = cpu_to_le32(OS_vtophys(md));
+ FLUSH_MEM_WRITE();
+
+ if (ch->tx_full) {
+ ch->tx_full = 0;
+ ch->txd_required = 0;
+ sd_enable_xmit(ch->user); /* re-enable to catch flow controlled
+ * channel */
}
- /*
- * Otherwise, we have a valid, host-owned message descriptor which
- * has been successfully transmitted and whose buffer can be freed,
- * so... process this MD, it's owned by the host. (This might give
- * as a new, updated txd_irq_srv.)
- */
- musycc_bh_tx_eom(ch->up, ch->gchan);
- }
- md = ch->txd_irq_srv;
- ch->up->regram->thp[ch->gchan] = cpu_to_le32(OS_vtophys(md));
- FLUSH_MEM_WRITE();
-
- if (ch->tx_full) {
- ch->tx_full = 0;
- ch->txd_required = 0;
- sd_enable_xmit(ch->user); /* re-enable to catch flow controlled
- * channel */
- }
- spin_unlock_irqrestore(&ch->ch_txlock, flags);
+ spin_unlock_irqrestore(&ch->ch_txlock, flags);
#ifdef RLD_TRANS_DEBUG
- pr_info("++ musycc_update_tx_thp[%d]: setting thp = %p, sts %x\n", ch->channum, md, md->status);
+ pr_info("++ musycc_update_tx_thp[%d]: setting thp = %p, sts %x\n", ch->channum, md, md->status);
#endif
}
void
musycc_wq_chan_restart(void *arg) /* channel private structure */
{
- mch_t *ch;
- mpi_t *pi;
- struct mdesc *md;
+ mch_t *ch;
+ mpi_t *pi;
+ struct mdesc *md;
#if 0
- unsigned long flags;
+ unsigned long flags;
#endif
- ch = container_of(arg, struct c4_chan_info, ch_work);
- pi = ch->up;
+ ch = container_of(arg, struct c4_chan_info, ch_work);
+ pi = ch->up;
#ifdef RLD_TRANS_DEBUG
- pr_info("wq_chan_restart[%d]: start_RT[%d/%d] status %x\n",
- ch->channum, ch->ch_start_rx, ch->ch_start_tx, ch->status);
+ pr_info("wq_chan_restart[%d]: start_RT[%d/%d] status %x\n",
+ ch->channum, ch->ch_start_rx, ch->ch_start_tx, ch->status);
#endif
- /**********************************/
- /** check for RX restart request **/
- /**********************************/
+ /**********************************/
+ /** check for RX restart request **/
+ /**********************************/
- if ((ch->ch_start_rx) && (ch->status & RX_ENABLED)) {
+ if ((ch->ch_start_rx) && (ch->status & RX_ENABLED)) {
- ch->ch_start_rx = 0;
+ ch->ch_start_rx = 0;
#if defined(RLD_TRANS_DEBUG) || defined(RLD_RXACT_DEBUG)
- {
- static int hereb4 = 7;
+ {
+ static int hereb4 = 7;
- if (hereb4) { /* RLD DEBUG */
- hereb4--;
+ if (hereb4) { /* RLD DEBUG */
+ hereb4--;
#ifdef RLD_TRANS_DEBUG
- md = &ch->mdr[ch->rxix_irq_srv];
- pr_info("++ musycc_wq_chan_restart[%d] CHAN RX ACTIVATE: rxix_irq_srv %d, md %p sts %x, rxpkt %lu\n",
- ch->channum, ch->rxix_irq_srv, md, le32_to_cpu(md->status),
- ch->s.rx_packets);
+ md = &ch->mdr[ch->rxix_irq_srv];
+ pr_info("++ musycc_wq_chan_restart[%d] CHAN RX ACTIVATE: rxix_irq_srv %d, md %p sts %x, rxpkt %lu\n",
+ ch->channum, ch->rxix_irq_srv, md, le32_to_cpu(md->status),
+ ch->s.rx_packets);
#elif defined(RLD_RXACT_DEBUG)
- md = &ch->mdr[ch->rxix_irq_srv];
- pr_info("++ musycc_wq_chan_restart[%d] CHAN RX ACTIVATE: rxix_irq_srv %d, md %p sts %x, rxpkt %lu\n",
- ch->channum, ch->rxix_irq_srv, md, le32_to_cpu(md->status),
- ch->s.rx_packets);
- musycc_dump_rxbuffer_ring(ch, 1); /* RLD DEBUG */
+ md = &ch->mdr[ch->rxix_irq_srv];
+ pr_info("++ musycc_wq_chan_restart[%d] CHAN RX ACTIVATE: rxix_irq_srv %d, md %p sts %x, rxpkt %lu\n",
+ ch->channum, ch->rxix_irq_srv, md, le32_to_cpu(md->status),
+ ch->s.rx_packets);
+ musycc_dump_rxbuffer_ring(ch, 1); /* RLD DEBUG */
#endif
- }
- }
+ }
+ }
#endif
- musycc_serv_req(pi, SR_CHANNEL_ACTIVATE | SR_RX_DIRECTION | ch->gchan);
- }
- /**********************************/
- /** check for TX restart request **/
- /**********************************/
+ musycc_serv_req(pi, SR_CHANNEL_ACTIVATE | SR_RX_DIRECTION | ch->gchan);
+ }
+ /**********************************/
+ /** check for TX restart request **/
+ /**********************************/
- if ((ch->ch_start_tx) && (ch->status & TX_ENABLED)) {
- /* find next unprocessed message, then set TX thp to it */
- musycc_update_tx_thp(ch);
+ if ((ch->ch_start_tx) && (ch->status & TX_ENABLED)) {
+ /* find next unprocessed message, then set TX thp to it */
+ musycc_update_tx_thp(ch);
#if 0
- spin_lock_irqsave(&ch->ch_txlock, flags);
+ spin_lock_irqsave(&ch->ch_txlock, flags);
#endif
- md = ch->txd_irq_srv;
- if (!md) {
+ md = ch->txd_irq_srv;
+ if (!md) {
#ifdef RLD_TRANS_DEBUG
- pr_info("-- musycc_wq_chan_restart[%d]: WARNING, starting NULL md\n", ch->channum);
+ pr_info("-- musycc_wq_chan_restart[%d]: WARNING, starting NULL md\n", ch->channum);
#endif
#if 0
- spin_unlock_irqrestore(&ch->ch_txlock, flags);
+ spin_unlock_irqrestore(&ch->ch_txlock, flags);
#endif
- } else if (md->data && ((le32_to_cpu(md->status)) & MUSYCC_TX_OWNED)) {
- ch->ch_start_tx = 0;
+ } else if (md->data && ((le32_to_cpu(md->status)) & MUSYCC_TX_OWNED)) {
+ ch->ch_start_tx = 0;
#if 0
- spin_unlock_irqrestore(&ch->ch_txlock, flags); /* allow interrupts for service request */
+ spin_unlock_irqrestore(&ch->ch_txlock, flags); /* allow interrupts for service request */
#endif
#ifdef RLD_TRANS_DEBUG
- pr_info("++ musycc_wq_chan_restart() CHAN TX ACTIVATE: chan %d txd_irq_srv %p = sts %x, txpkt %lu\n",
- ch->channum, ch->txd_irq_srv, ch->txd_irq_srv->status, ch->s.tx_packets);
+ pr_info("++ musycc_wq_chan_restart() CHAN TX ACTIVATE: chan %d txd_irq_srv %p = sts %x, txpkt %lu\n",
+ ch->channum, ch->txd_irq_srv, ch->txd_irq_srv->status, ch->s.tx_packets);
#endif
- musycc_serv_req(pi, SR_CHANNEL_ACTIVATE | SR_TX_DIRECTION | ch->gchan);
- }
+ musycc_serv_req(pi, SR_CHANNEL_ACTIVATE | SR_TX_DIRECTION | ch->gchan);
+ }
#ifdef RLD_RESTART_DEBUG
- else {
- /* retain request to start until retried and we have data to xmit */
- pr_info("-- musycc_wq_chan_restart[%d]: DELAYED due to md %p sts %x data %x, start_tx %x\n",
- ch->channum, md,
- le32_to_cpu(md->status),
- le32_to_cpu(md->data), ch->ch_start_tx);
- musycc_dump_txbuffer_ring(ch, 0);
+ else {
+ /* retain request to start until retried and we have data to xmit */
+ pr_info("-- musycc_wq_chan_restart[%d]: DELAYED due to md %p sts %x data %x, start_tx %x\n",
+ ch->channum, md,
+ le32_to_cpu(md->status),
+ le32_to_cpu(md->data), ch->ch_start_tx);
+ musycc_dump_txbuffer_ring(ch, 0);
#if 0
- spin_unlock_irqrestore(&ch->ch_txlock, flags); /* allow interrupts for service request */
+ spin_unlock_irqrestore(&ch->ch_txlock, flags); /* allow interrupts for service request */
#endif
- }
+ }
#endif
- }
+ }
}
musycc_chan_restart(mch_t *ch)
{
#ifdef RLD_RESTART_DEBUG
- pr_info("++ musycc_chan_restart[%d]: txd_irq_srv @ %p = sts %x\n",
- ch->channum, ch->txd_irq_srv, ch->txd_irq_srv->status);
+ pr_info("++ musycc_chan_restart[%d]: txd_irq_srv @ %p = sts %x\n",
+ ch->channum, ch->txd_irq_srv, ch->txd_irq_srv->status);
#endif
- /* 2.6 - find next unprocessed message, then set TX thp to it */
+ /* 2.6 - find next unprocessed message, then set TX thp to it */
#ifdef RLD_RESTART_DEBUG
- pr_info(">> musycc_chan_restart: scheduling Chan %x workQ @ %p\n", ch->channum, &ch->ch_work);
+ pr_info(">> musycc_chan_restart: scheduling Chan %x workQ @ %p\n", ch->channum, &ch->ch_work);
#endif
- c4_wk_chan_restart(ch); /* work queue mechanism fires off: Ref:
- * musycc_wq_chan_restart () */
-
+ c4_wk_chan_restart(ch); /* work queue mechanism fires off: Ref:
+ * musycc_wq_chan_restart () */
}
void
rld_put_led(mpi_t *pi, u_int32_t ledval)
{
- static u_int32_t led = 0;
+ static u_int32_t led = 0;
- if (ledval == 0)
- led = 0;
- else
- led |= ledval;
+ if (ledval == 0)
+ led = 0;
+ else
+ led |= ledval;
- pci_write_32((u_int32_t *) &pi->up->cpldbase->leds, led); /* RLD DEBUG TRANHANG */
+ pci_write_32((u_int32_t *) &pi->up->cpldbase->leds, led); /* RLD DEBUG TRANHANG */
}
void
musycc_serv_req(mpi_t *pi, u_int32_t req)
{
- volatile u_int32_t r;
- int rcnt;
+ volatile u_int32_t r;
+ int rcnt;
- /*
- * PORT NOTE: Semaphore protect service loop guarantees only a single
- * operation at a time. Per MUSYCC Manual - "Issuing service requests to
- * the same channel group without first receiving ACK from each request
- * may cause the host to lose track of which service request has been
- * acknowledged."
- */
+ /*
+ * PORT NOTE: Semaphore protect service loop guarantees only a single
+ * operation at a time. Per MUSYCC Manual - "Issuing service requests to
+ * the same channel group without first receiving ACK from each request
+ * may cause the host to lose track of which service request has been
+ * acknowledged."
+ */
- SD_SEM_TAKE(&pi->sr_sem_busy, "serv"); /* only 1 thru here, per
- * group */
+ SD_SEM_TAKE(&pi->sr_sem_busy, "serv"); /* only 1 thru here, per
+ * group */
- if (pi->sr_last == req) {
+ if (pi->sr_last == req) {
#ifdef RLD_TRANS_DEBUG
- pr_info(">> same SR, Port %d Req %x\n", pi->portnum, req);
+ pr_info(">> same SR, Port %d Req %x\n", pi->portnum, req);
#endif
- /*
- * The most likely repeated request is the channel activation command
- * which follows the occurrence of a Transparent mode TX ONR or a
- * BUFF error. If the previous command was a CHANNEL ACTIVATE,
- * precede it with a NOOP command in order maintain coherent control
- * of this current (re)ACTIVATE.
- */
+ /*
+ * The most likely repeated request is the channel activation command
+ * which follows the occurrence of a Transparent mode TX ONR or a
+ * BUFF error. If the previous command was a CHANNEL ACTIVATE,
+ * precede it with a NOOP command in order maintain coherent control
+ * of this current (re)ACTIVATE.
+ */
- r = (pi->sr_last & ~SR_GCHANNEL_MASK);
- if ((r == (SR_CHANNEL_ACTIVATE | SR_TX_DIRECTION)) ||
- (r == (SR_CHANNEL_ACTIVATE | SR_RX_DIRECTION))) {
+ r = (pi->sr_last & ~SR_GCHANNEL_MASK);
+ if ((r == (SR_CHANNEL_ACTIVATE | SR_TX_DIRECTION)) ||
+ (r == (SR_CHANNEL_ACTIVATE | SR_RX_DIRECTION))) {
#ifdef RLD_TRANS_DEBUG
- pr_info(">> same CHAN ACT SR, Port %d Req %x => issue SR_NOOP CMD\n", pi->portnum, req);
+ pr_info(">> same CHAN ACT SR, Port %d Req %x => issue SR_NOOP CMD\n", pi->portnum, req);
#endif
- SD_SEM_GIVE(&pi->sr_sem_busy); /* allow this next request */
- musycc_serv_req(pi, SR_NOOP);
- SD_SEM_TAKE(&pi->sr_sem_busy, "serv"); /* relock & continue w/
- * original req */
- } else if (req == SR_NOOP) {
- /* no need to issue back-to-back SR_NOOP commands at this time */
+ SD_SEM_GIVE(&pi->sr_sem_busy); /* allow this next request */
+ musycc_serv_req(pi, SR_NOOP);
+ SD_SEM_TAKE(&pi->sr_sem_busy, "serv"); /* relock & continue w/
+ * original req */
+ } else if (req == SR_NOOP) {
+ /* no need to issue back-to-back SR_NOOP commands at this time */
#ifdef RLD_TRANS_DEBUG
- pr_info(">> same Port SR_NOOP skipped, Port %d\n", pi->portnum);
+ pr_info(">> same Port SR_NOOP skipped, Port %d\n", pi->portnum);
#endif
- SD_SEM_GIVE(&pi->sr_sem_busy); /* allow this next request */
- return;
+ SD_SEM_GIVE(&pi->sr_sem_busy); /* allow this next request */
+ return;
+ }
}
- }
- rcnt = 0;
- pi->sr_last = req;
+ rcnt = 0;
+ pi->sr_last = req;
rewrite:
- pci_write_32((u_int32_t *) &pi->reg->srd, req);
- FLUSH_MEM_WRITE();
-
- /*
- * Per MUSYCC Manual, Section 6.1,2 - "When writing an SCR service
- * request, the host must ensure at least one PCI bus clock cycle has
- * elapsed before writing another service request. To meet this minimum
- * elapsed service request write timing interval, it is recommended that
- * the host follow any SCR write with another operation which reads from
- * the same address."
- */
- r = pci_read_32((u_int32_t *) &pi->reg->srd); /* adhere to write
- * timing imposition */
-
-
- if ((r != req) && (req != SR_CHIP_RESET) && (++rcnt <= MUSYCC_SR_RETRY_CNT)) {
- if (cxt1e1_log_level >= LOG_MONITOR)
- pr_info("%s: %d - reissue srv req/last %x/%x (hdw reads %x), Chan %d.\n",
- pi->up->devname, rcnt, req, pi->sr_last, r,
- (pi->portnum * MUSYCC_NCHANS) + (req & 0x1f));
- OS_uwait_dummy(); /* this delay helps reduce reissue counts
- * (reason not yet researched) */
- goto rewrite;
- }
- if (rcnt > MUSYCC_SR_RETRY_CNT) {
- pr_warning("%s: failed service request (#%d)= %x, group %d.\n",
- pi->up->devname, MUSYCC_SR_RETRY_CNT, req, pi->portnum);
- SD_SEM_GIVE(&pi->sr_sem_busy); /* allow any next request */
- return;
- }
- if (req == SR_CHIP_RESET) {
+ pci_write_32((u_int32_t *) &pi->reg->srd, req);
+ FLUSH_MEM_WRITE();
+
/*
- * PORT NOTE: the CHIP_RESET command is NOT ack'd by the MUSYCC, thus
- * the upcoming delay is used. Though the MUSYCC documentation
- * suggests a read-after-write would supply the required delay, it's
- * unclear what CPU/BUS clock speeds might have been assumed when
- * suggesting this 'lack of ACK' workaround. Thus the use of uwait.
+ * Per MUSYCC Manual, Section 6.1,2 - "When writing an SCR service
+ * request, the host must ensure at least one PCI bus clock cycle has
+ * elapsed before writing another service request. To meet this minimum
+ * elapsed service request write timing interval, it is recommended that
+ * the host follow any SCR write with another operation which reads from
+ * the same address."
*/
- OS_uwait(100000, "icard"); /* 100ms */
- } else {
- FLUSH_MEM_READ();
- SD_SEM_TAKE(&pi->sr_sem_wait, "sakack"); /* sleep until SACK
- * interrupt occurs */
- }
- SD_SEM_GIVE(&pi->sr_sem_busy); /* allow any next request */
+ r = pci_read_32((u_int32_t *) &pi->reg->srd); /* adhere to write
+ * timing imposition */
+
+
+ if ((r != req) && (req != SR_CHIP_RESET) && (++rcnt <= MUSYCC_SR_RETRY_CNT)) {
+ if (cxt1e1_log_level >= LOG_MONITOR)
+ pr_info("%s: %d - reissue srv req/last %x/%x (hdw reads %x), Chan %d.\n",
+ pi->up->devname, rcnt, req, pi->sr_last, r,
+ (pi->portnum * MUSYCC_NCHANS) + (req & 0x1f));
+ OS_uwait_dummy(); /* this delay helps reduce reissue counts
+ * (reason not yet researched) */
+ goto rewrite;
+ }
+ if (rcnt > MUSYCC_SR_RETRY_CNT) {
+ pr_warning("%s: failed service request (#%d)= %x, group %d.\n",
+ pi->up->devname, MUSYCC_SR_RETRY_CNT, req, pi->portnum);
+ SD_SEM_GIVE(&pi->sr_sem_busy); /* allow any next request */
+ return;
+ }
+ if (req == SR_CHIP_RESET) {
+ /*
+ * PORT NOTE: the CHIP_RESET command is NOT ack'd by the MUSYCC, thus
+ * the upcoming delay is used. Though the MUSYCC documentation
+ * suggests a read-after-write would supply the required delay, it's
+ * unclear what CPU/BUS clock speeds might have been assumed when
+ * suggesting this 'lack of ACK' workaround. Thus the use of uwait.
+ */
+ OS_uwait(100000, "icard"); /* 100ms */
+ } else {
+ FLUSH_MEM_READ();
+ SD_SEM_TAKE(&pi->sr_sem_wait, "sakack"); /* sleep until SACK
+ * interrupt occurs */
+ }
+ SD_SEM_GIVE(&pi->sr_sem_busy); /* allow any next request */
}
void
musycc_update_timeslots(mpi_t *pi)
{
- int i, ch;
- char e1mode = IS_FRAME_ANY_E1(pi->p.port_mode);
+ int i, ch;
+ char e1mode = IS_FRAME_ANY_E1(pi->p.port_mode);
- for (i = 0; i < 32; i++) {
- int usedby = 0, last = 0, ts, j, bits[8];
+ for (i = 0; i < 32; i++) {
+ int usedby = 0, last = 0, ts, j, bits[8];
- u_int8_t lastval = 0;
+ u_int8_t lastval = 0;
- if (((i == 0) && e1mode) || /* disable if E1 mode */
- ((i == 16) && ((pi->p.port_mode == CFG_FRAME_E1CRC_CAS) || (pi->p.port_mode == CFG_FRAME_E1CRC_CAS_AMI)))
- || ((i > 23) && (!e1mode))) /* disable if T1 mode */
- pi->tsm[i] = 0xff; /* make tslot unavailable for this mode */
- else
- pi->tsm[i] = 0x00; /* make tslot available for assignment */
- for (j = 0; j < 8; j++)
- bits[j] = -1;
- for (ch = 0; ch < MUSYCC_NCHANS; ch++) {
- if ((pi->chan[ch]->state == UP) && (pi->chan[ch]->p.bitmask[i])) {
- usedby++;
- last = ch;
- lastval = pi->chan[ch]->p.bitmask[i];
+ if (((i == 0) && e1mode) || /* disable if E1 mode */
+ ((i == 16) && ((pi->p.port_mode == CFG_FRAME_E1CRC_CAS) || (pi->p.port_mode == CFG_FRAME_E1CRC_CAS_AMI)))
+ || ((i > 23) && (!e1mode))) /* disable if T1 mode */
+ pi->tsm[i] = 0xff; /* make tslot unavailable for this mode */
+ else
+ pi->tsm[i] = 0x00; /* make tslot available for assignment */
for (j = 0; j < 8; j++)
- if (lastval & (1 << j))
- bits[j] = ch;
- pi->tsm[i] |= lastval;
- }
- }
- if (!usedby)
- ts = 0;
- else if ((usedby == 1) && (lastval == 0xff))
- ts = (4 << 5) | last;
- else if ((usedby == 1) && (lastval == 0x7f))
- ts = (5 << 5) | last;
- else {
- int idx;
-
- if (bits[0] < 0)
- ts = (6 << 5) | (idx = last);
- else
- ts = (7 << 5) | (idx = bits[0]);
- for (j = 1; j < 8; j++) {
- pi->regram->rscm[idx * 8 + j] = (bits[j] < 0) ? 0 : (0x80 | bits[j]);
- pi->regram->tscm[idx * 8 + j] = (bits[j] < 0) ? 0 : (0x80 | bits[j]);
- }
+ bits[j] = -1;
+ for (ch = 0; ch < MUSYCC_NCHANS; ch++) {
+ if ((pi->chan[ch]->state == UP) && (pi->chan[ch]->p.bitmask[i])) {
+ usedby++;
+ last = ch;
+ lastval = pi->chan[ch]->p.bitmask[i];
+ for (j = 0; j < 8; j++)
+ if (lastval & (1 << j))
+ bits[j] = ch;
+ pi->tsm[i] |= lastval;
+ }
+ }
+ if (!usedby)
+ ts = 0;
+ else if ((usedby == 1) && (lastval == 0xff))
+ ts = (4 << 5) | last;
+ else if ((usedby == 1) && (lastval == 0x7f))
+ ts = (5 << 5) | last;
+ else {
+ int idx;
+
+ if (bits[0] < 0)
+ ts = (6 << 5) | (idx = last);
+ else
+ ts = (7 << 5) | (idx = bits[0]);
+ for (j = 1; j < 8; j++) {
+ pi->regram->rscm[idx * 8 + j] = (bits[j] < 0) ? 0 : (0x80 | bits[j]);
+ pi->regram->tscm[idx * 8 + j] = (bits[j] < 0) ? 0 : (0x80 | bits[j]);
+ }
+ }
+ pi->regram->rtsm[i] = ts;
+ pi->regram->ttsm[i] = ts;
}
- pi->regram->rtsm[i] = ts;
- pi->regram->ttsm[i] = ts;
- }
- FLUSH_MEM_WRITE();
-
- musycc_serv_req(pi, SR_TIMESLOT_MAP | SR_RX_DIRECTION);
- musycc_serv_req(pi, SR_TIMESLOT_MAP | SR_TX_DIRECTION);
- musycc_serv_req(pi, SR_SUBCHANNEL_MAP | SR_RX_DIRECTION);
- musycc_serv_req(pi, SR_SUBCHANNEL_MAP | SR_TX_DIRECTION);
+ FLUSH_MEM_WRITE();
+
+ musycc_serv_req(pi, SR_TIMESLOT_MAP | SR_RX_DIRECTION);
+ musycc_serv_req(pi, SR_TIMESLOT_MAP | SR_TX_DIRECTION);
+ musycc_serv_req(pi, SR_SUBCHANNEL_MAP | SR_RX_DIRECTION);
+ musycc_serv_req(pi, SR_SUBCHANNEL_MAP | SR_TX_DIRECTION);
}
#endif
#ifdef SBE_WAN256T3_ENABLE
-void
+ void
musycc_update_timeslots(mpi_t *pi)
{
- mch_t *ch;
+ mch_t *ch;
- u_int8_t ts, hmask, tsen;
- int gchan;
- int i;
+ u_int8_t ts, hmask, tsen;
+ int gchan;
+ int i;
#ifdef SBE_PMCC4_ENABLE
- hmask = (0x1f << pi->up->p.hypersize) & 0x1f;
+ hmask = (0x1f << pi->up->p.hypersize) & 0x1f;
#endif
#ifdef SBE_WAN256T3_ENABLE
- hmask = (0x1f << hyperdummy) & 0x1f;
+ hmask = (0x1f << hyperdummy) & 0x1f;
#endif
- for (i = 0; i < 128; i++) {
- gchan = ((pi->portnum * MUSYCC_NCHANS) + (i & hmask)) % MUSYCC_NCHANS;
- ch = pi->chan[gchan];
- if (ch->p.mode_56k)
- tsen = MODE_56KBPS;
- else
- tsen = MODE_64KBPS; /* also the default */
- ts = ((pi->portnum % 4) == (i / 32)) ? (tsen << 5) | (i & hmask) : 0;
- pi->regram->rtsm[i] = ts;
- pi->regram->ttsm[i] = ts;
- }
- FLUSH_MEM_WRITE();
- musycc_serv_req(pi, SR_TIMESLOT_MAP | SR_RX_DIRECTION);
- musycc_serv_req(pi, SR_TIMESLOT_MAP | SR_TX_DIRECTION);
+ for (i = 0; i < 128; i++) {
+ gchan = ((pi->portnum * MUSYCC_NCHANS) + (i & hmask)) % MUSYCC_NCHANS;
+ ch = pi->chan[gchan];
+ if (ch->p.mode_56k)
+ tsen = MODE_56KBPS;
+ else
+ tsen = MODE_64KBPS; /* also the default */
+ ts = ((pi->portnum % 4) == (i / 32)) ? (tsen << 5) | (i & hmask) : 0;
+ pi->regram->rtsm[i] = ts;
+ pi->regram->ttsm[i] = ts;
+ }
+ FLUSH_MEM_WRITE();
+ musycc_serv_req(pi, SR_TIMESLOT_MAP | SR_RX_DIRECTION);
+ musycc_serv_req(pi, SR_TIMESLOT_MAP | SR_TX_DIRECTION);
}
#endif
u_int32_t
musycc_chan_proto(int proto)
{
- int reg;
-
- switch (proto) {
- case CFG_CH_PROTO_TRANS: /* 0 */
- reg = MUSYCC_CCD_TRANS;
- break;
- case CFG_CH_PROTO_SS7: /* 1 */
- reg = MUSYCC_CCD_SS7;
- break;
- default:
- case CFG_CH_PROTO_ISLP_MODE: /* 4 */
- case CFG_CH_PROTO_HDLC_FCS16: /* 2 */
- reg = MUSYCC_CCD_HDLC_FCS16;
- break;
- case CFG_CH_PROTO_HDLC_FCS32: /* 3 */
- reg = MUSYCC_CCD_HDLC_FCS32;
- break;
- }
-
- return reg;
+ int reg;
+
+ switch (proto) {
+ case CFG_CH_PROTO_TRANS: /* 0 */
+ reg = MUSYCC_CCD_TRANS;
+ break;
+ case CFG_CH_PROTO_SS7: /* 1 */
+ reg = MUSYCC_CCD_SS7;
+ break;
+ default:
+ case CFG_CH_PROTO_ISLP_MODE: /* 4 */
+ case CFG_CH_PROTO_HDLC_FCS16: /* 2 */
+ reg = MUSYCC_CCD_HDLC_FCS16;
+ break;
+ case CFG_CH_PROTO_HDLC_FCS32: /* 3 */
+ reg = MUSYCC_CCD_HDLC_FCS32;
+ break;
+ }
+
+ return reg;
}
#ifdef SBE_WAN256T3_ENABLE
static void __init
musycc_init_port(mpi_t *pi)
{
- pci_write_32((u_int32_t *) &pi->reg->gbp, OS_vtophys(pi->regram));
-
- pi->regram->grcd =
- __constant_cpu_to_le32(MUSYCC_GRCD_RX_ENABLE |
- MUSYCC_GRCD_TX_ENABLE |
- MUSYCC_GRCD_SF_ALIGN |
- MUSYCC_GRCD_SUBCHAN_DISABLE |
- MUSYCC_GRCD_OOFMP_DISABLE |
- MUSYCC_GRCD_COFAIRQ_DISABLE |
- MUSYCC_GRCD_MC_ENABLE |
- (MUSYCC_GRCD_POLLTH_32 << MUSYCC_GRCD_POLLTH_SHIFT));
-
- pi->regram->pcd =
- __constant_cpu_to_le32(MUSYCC_PCD_E1X4_MODE |
- MUSYCC_PCD_TXDATA_RISING |
- MUSYCC_PCD_TX_DRIVEN);
-
- /* Message length descriptor */
- pi->regram->mld = __constant_cpu_to_le32(cxt1e1_max_mru | (cxt1e1_max_mru << 16));
- FLUSH_MEM_WRITE();
+ pci_write_32((u_int32_t *) &pi->reg->gbp, OS_vtophys(pi->regram));
+
+ pi->regram->grcd =
+ __constant_cpu_to_le32(MUSYCC_GRCD_RX_ENABLE |
+ MUSYCC_GRCD_TX_ENABLE |
+ MUSYCC_GRCD_SF_ALIGN |
+ MUSYCC_GRCD_SUBCHAN_DISABLE |
+ MUSYCC_GRCD_OOFMP_DISABLE |
+ MUSYCC_GRCD_COFAIRQ_DISABLE |
+ MUSYCC_GRCD_MC_ENABLE |
+ (MUSYCC_GRCD_POLLTH_32 << MUSYCC_GRCD_POLLTH_SHIFT));
+
+ pi->regram->pcd =
+ __constant_cpu_to_le32(MUSYCC_PCD_E1X4_MODE |
+ MUSYCC_PCD_TXDATA_RISING |
+ MUSYCC_PCD_TX_DRIVEN);
+
+ /* Message length descriptor */
+ pi->regram->mld = __constant_cpu_to_le32(cxt1e1_max_mru | (cxt1e1_max_mru << 16));
+ FLUSH_MEM_WRITE();
- musycc_serv_req(pi, SR_GROUP_INIT | SR_RX_DIRECTION);
- musycc_serv_req(pi, SR_GROUP_INIT | SR_TX_DIRECTION);
+ musycc_serv_req(pi, SR_GROUP_INIT | SR_RX_DIRECTION);
+ musycc_serv_req(pi, SR_GROUP_INIT | SR_TX_DIRECTION);
- musycc_init_mdt(pi);
+ musycc_init_mdt(pi);
- musycc_update_timeslots(pi);
+ musycc_update_timeslots(pi);
}
#endif
status_t __init
musycc_init(ci_t *ci)
{
- char *regaddr; /* temp for address boundary calculations */
- int i, gchan;
+ char *regaddr; /* temp for address boundary calculations */
+ int i, gchan;
- OS_sem_init(&ci->sem_wdbusy, SEM_AVAILABLE); /* watchdog exclusion */
+ OS_sem_init(&ci->sem_wdbusy, SEM_AVAILABLE); /* watchdog exclusion */
- /*
- * Per MUSYCC manual, Section 6.3.4 - "The host must allocate a dword
- * aligned memory segment for interrupt queue pointers."
- */
+ /*
+ * Per MUSYCC manual, Section 6.3.4 - "The host must allocate a dword
+ * aligned memory segment for interrupt queue pointers."
+ */
#define INT_QUEUE_BOUNDARY 4
regaddr = kzalloc((INT_QUEUE_SIZE + 1) * sizeof(u_int32_t),
GFP_KERNEL | GFP_DMA);
- if (!regaddr)
- return -ENOMEM;
- ci->iqd_p_saved = regaddr; /* save orig value for free's usage */
- ci->iqd_p = (u_int32_t *) ((unsigned long) (regaddr + INT_QUEUE_BOUNDARY - 1) &
- (~(INT_QUEUE_BOUNDARY - 1))); /* this calculates
- * closest boundary */
+ if (!regaddr)
+ return -ENOMEM;
+ ci->iqd_p_saved = regaddr; /* save orig value for free's usage */
+ ci->iqd_p = (u_int32_t *) ((unsigned long) (regaddr + INT_QUEUE_BOUNDARY - 1) &
+ (~(INT_QUEUE_BOUNDARY - 1))); /* this calculates
+ * closest boundary */
- for (i = 0; i < INT_QUEUE_SIZE; i++)
- ci->iqd_p[i] = __constant_cpu_to_le32(INT_EMPTY_ENTRY);
+ for (i = 0; i < INT_QUEUE_SIZE; i++)
+ ci->iqd_p[i] = __constant_cpu_to_le32(INT_EMPTY_ENTRY);
- for (i = 0; i < ci->max_port; i++) {
- mpi_t *pi = &ci->port[i];
+ for (i = 0; i < ci->max_port; i++) {
+ mpi_t *pi = &ci->port[i];
- /*
- * Per MUSYCC manual, Section 6.3.2 - "The host must allocate a 2KB
- * bound memory segment for Channel Group 0."
- */
+ /*
+ * Per MUSYCC manual, Section 6.3.2 - "The host must allocate a 2KB
+ * bound memory segment for Channel Group 0."
+ */
#define GROUP_BOUNDARY 0x800
- regaddr = kzalloc(sizeof(struct musycc_groupr) + GROUP_BOUNDARY,
- GFP_KERNEL | GFP_DMA);
- if (!regaddr) {
- for (gchan = 0; gchan < i; gchan++) {
- pi = &ci->port[gchan];
- kfree(pi->reg);
- pi->reg = NULL;
- }
- return -ENOMEM;
+ regaddr = kzalloc(sizeof(struct musycc_groupr) + GROUP_BOUNDARY,
+ GFP_KERNEL | GFP_DMA);
+ if (!regaddr) {
+ for (gchan = 0; gchan < i; gchan++) {
+ pi = &ci->port[gchan];
+ kfree(pi->reg);
+ pi->reg = NULL;
+ }
+ return -ENOMEM;
+ }
+ pi->regram_saved = regaddr; /* save orig value for free's usage */
+ pi->regram = (struct musycc_groupr *) ((unsigned long) (regaddr + GROUP_BOUNDARY - 1) &
+ (~(GROUP_BOUNDARY - 1))); /* this calculates
+ * closest boundary */
}
- pi->regram_saved = regaddr; /* save orig value for free's usage */
- pi->regram = (struct musycc_groupr *) ((unsigned long) (regaddr + GROUP_BOUNDARY - 1) &
- (~(GROUP_BOUNDARY - 1))); /* this calculates
- * closest boundary */
- }
-
- /* any board centric MUSYCC commands will use group ZERO as its "home" */
- ci->regram = ci->port[0].regram;
- musycc_serv_req(&ci->port[0], SR_CHIP_RESET);
-
- pci_write_32((u_int32_t *) &ci->reg->gbp, OS_vtophys(ci->regram));
- pci_flush_write(ci);
+
+ /* any board centric MUSYCC commands will use group ZERO as its "home" */
+ ci->regram = ci->port[0].regram;
+ musycc_serv_req(&ci->port[0], SR_CHIP_RESET);
+
+ pci_write_32((u_int32_t *) &ci->reg->gbp, OS_vtophys(ci->regram));
+ pci_flush_write(ci);
#ifdef CONFIG_SBE_PMCC4_NCOMM
- ci->regram->__glcd = __constant_cpu_to_le32(GCD_MAGIC);
+ ci->regram->__glcd = __constant_cpu_to_le32(GCD_MAGIC);
#else
- /* standard driver POLLS for INTB via CPLD register */
- ci->regram->__glcd = __constant_cpu_to_le32(GCD_MAGIC | MUSYCC_GCD_INTB_DISABLE);
+ /* standard driver POLLS for INTB via CPLD register */
+ ci->regram->__glcd = __constant_cpu_to_le32(GCD_MAGIC | MUSYCC_GCD_INTB_DISABLE);
#endif
- ci->regram->__iqp = cpu_to_le32(OS_vtophys(&ci->iqd_p[0]));
- ci->regram->__iql = __constant_cpu_to_le32(INT_QUEUE_SIZE - 1);
- pci_write_32((u_int32_t *) &ci->reg->dacbp, 0);
- FLUSH_MEM_WRITE();
+ ci->regram->__iqp = cpu_to_le32(OS_vtophys(&ci->iqd_p[0]));
+ ci->regram->__iql = __constant_cpu_to_le32(INT_QUEUE_SIZE - 1);
+ pci_write_32((u_int32_t *) &ci->reg->dacbp, 0);
+ FLUSH_MEM_WRITE();
- ci->state = C_RUNNING; /* mark as full interrupt processing
- * available */
+ ci->state = C_RUNNING; /* mark as full interrupt processing
+ * available */
- musycc_serv_req(&ci->port[0], SR_GLOBAL_INIT); /* FIRST INTERRUPT ! */
+ musycc_serv_req(&ci->port[0], SR_GLOBAL_INIT); /* FIRST INTERRUPT ! */
- /* sanity check settable parameters */
+ /* sanity check settable parameters */
- if (cxt1e1_max_mru > 0xffe) {
- pr_warning("Maximum allowed MRU exceeded, resetting %d to %d.\n",
- cxt1e1_max_mru, 0xffe);
- cxt1e1_max_mru = 0xffe;
- }
- if (cxt1e1_max_mtu > 0xffe) {
- pr_warning("Maximum allowed MTU exceeded, resetting %d to %d.\n",
- cxt1e1_max_mtu, 0xffe);
- cxt1e1_max_mtu = 0xffe;
- }
+ if (cxt1e1_max_mru > 0xffe) {
+ pr_warning("Maximum allowed MRU exceeded, resetting %d to %d.\n",
+ cxt1e1_max_mru, 0xffe);
+ cxt1e1_max_mru = 0xffe;
+ }
+ if (cxt1e1_max_mtu > 0xffe) {
+ pr_warning("Maximum allowed MTU exceeded, resetting %d to %d.\n",
+ cxt1e1_max_mtu, 0xffe);
+ cxt1e1_max_mtu = 0xffe;
+ }
#ifdef SBE_WAN256T3_ENABLE
- for (i = 0; i < MUSYCC_NPORTS; i++)
- musycc_init_port(&ci->port[i]);
+ for (i = 0; i < MUSYCC_NPORTS; i++)
+ musycc_init_port(&ci->port[i]);
#endif
- return SBE_DRVR_SUCCESS; /* no error */
+ return SBE_DRVR_SUCCESS; /* no error */
}
void
musycc_bh_tx_eom(mpi_t *pi, int gchan)
{
- mch_t *ch;
- struct mdesc *md;
+ mch_t *ch;
+ struct mdesc *md;
#if 0
#ifndef SBE_ISR_INLINE
- unsigned long flags;
+ unsigned long flags;
#endif
#endif
- volatile u_int32_t status;
-
- ch = pi->chan[gchan];
- if (!ch || ch->state != UP) {
- if (cxt1e1_log_level >= LOG_ERROR)
- pr_info("%s: intr: xmit EOM on uninitialized channel %d\n",
- pi->up->devname, gchan);
- }
- if (!ch || !ch->mdt)
- return; /* note: mdt==0 implies a malloc()
- * failure w/in chan_up() routine */
+ volatile u_int32_t status;
+
+ ch = pi->chan[gchan];
+ if (!ch || ch->state != UP) {
+ if (cxt1e1_log_level >= LOG_ERROR)
+ pr_info("%s: intr: xmit EOM on uninitialized channel %d\n",
+ pi->up->devname, gchan);
+ }
+ if (!ch || !ch->mdt)
+ return; /* note: mdt==0 implies a malloc()
+ * failure w/in chan_up() routine */
#if 0
#ifdef SBE_ISR_INLINE
- spin_lock_irq(&ch->ch_txlock);
+ spin_lock_irq(&ch->ch_txlock);
#else
- spin_lock_irqsave(&ch->ch_txlock, flags);
+ spin_lock_irqsave(&ch->ch_txlock, flags);
#endif
#endif
- do {
- FLUSH_MEM_READ();
- md = ch->txd_irq_srv;
- status = le32_to_cpu(md->status);
-
- /*
- * Note: Per MUSYCC Ref 6.4.9, the host does not poll a host-owned
- * Transmit Buffer Descriptor during Transparent Mode.
- */
- if (status & MUSYCC_TX_OWNED) {
- int readCount, loopCount;
-
- /***********************************************************/
- /* HW Bug Fix */
- /* ---------- */
- /* Under certain PCI Bus loading conditions, the data */
- /* associated with an update of Shared Memory is delayed */
- /* relative to its PCI Interrupt. This is caught when */
- /* the host determines it does not yet OWN the descriptor. */
- /***********************************************************/
-
- readCount = 0;
- while (status & MUSYCC_TX_OWNED) {
- for (loopCount = 0; loopCount < 0x30; loopCount++)
- OS_uwait_dummy(); /* use call to avoid optimization
- * removal of dummy delay */
+ do {
FLUSH_MEM_READ();
+ md = ch->txd_irq_srv;
status = le32_to_cpu(md->status);
- if (readCount++ > 40)
- break; /* don't wait any longer */
- }
- if (status & MUSYCC_TX_OWNED) {
- if (cxt1e1_log_level >= LOG_MONITOR) {
- pr_info("%s: Port %d Chan %2d - unexpected TX msg ownership intr (md %p sts %x)\n",
- pi->up->devname, pi->portnum, ch->channum,
- md, status);
- pr_info("++ User 0x%p IRQ_SRV 0x%p USR_ADD 0x%p QStopped %x, start_tx %x tx_full %d txd_free %d mode %x\n",
- ch->user, ch->txd_irq_srv, ch->txd_usr_add,
- sd_queue_stopped(ch->user),
- ch->ch_start_tx, ch->tx_full, ch->txd_free, ch->p.chan_mode);
- musycc_dump_txbuffer_ring(ch, 0);
+
+ /*
+ * Note: Per MUSYCC Ref 6.4.9, the host does not poll a host-owned
+ * Transmit Buffer Descriptor during Transparent Mode.
+ */
+ if (status & MUSYCC_TX_OWNED) {
+ int readCount, loopCount;
+
+ /***********************************************************/
+ /* HW Bug Fix */
+ /* ---------- */
+ /* Under certain PCI Bus loading conditions, the data */
+ /* associated with an update of Shared Memory is delayed */
+ /* relative to its PCI Interrupt. This is caught when */
+ /* the host determines it does not yet OWN the descriptor. */
+ /***********************************************************/
+
+ readCount = 0;
+ while (status & MUSYCC_TX_OWNED) {
+ for (loopCount = 0; loopCount < 0x30; loopCount++)
+ OS_uwait_dummy(); /* use call to avoid optimization
+ * removal of dummy delay */
+ FLUSH_MEM_READ();
+ status = le32_to_cpu(md->status);
+ if (readCount++ > 40)
+ break; /* don't wait any longer */
+ }
+ if (status & MUSYCC_TX_OWNED) {
+ if (cxt1e1_log_level >= LOG_MONITOR) {
+ pr_info("%s: Port %d Chan %2d - unexpected TX msg ownership intr (md %p sts %x)\n",
+ pi->up->devname, pi->portnum, ch->channum,
+ md, status);
+ pr_info("++ User 0x%p IRQ_SRV 0x%p USR_ADD 0x%p QStopped %x, start_tx %x tx_full %d txd_free %d mode %x\n",
+ ch->user, ch->txd_irq_srv, ch->txd_usr_add,
+ sd_queue_stopped(ch->user),
+ ch->ch_start_tx, ch->tx_full, ch->txd_free, ch->p.chan_mode);
+ musycc_dump_txbuffer_ring(ch, 0);
+ }
+ break; /* Not our mdesc, done */
+ } else {
+ if (cxt1e1_log_level >= LOG_MONITOR)
+ pr_info("%s: Port %d Chan %2d - recovered TX msg ownership [%d] (md %p sts %x)\n",
+ pi->up->devname, pi->portnum, ch->channum, readCount, md, status);
+ }
}
- break; /* Not our mdesc, done */
- } else {
- if (cxt1e1_log_level >= LOG_MONITOR)
- pr_info("%s: Port %d Chan %2d - recovered TX msg ownership [%d] (md %p sts %x)\n",
- pi->up->devname, pi->portnum, ch->channum, readCount, md, status);
- }
- }
- ch->txd_irq_srv = md->snext;
-
- md->data = 0;
- if (md->mem_token) {
- /* upcount channel */
- atomic_sub(OS_mem_token_tlen(md->mem_token), &ch->tx_pending);
- /* upcount card */
- atomic_sub(OS_mem_token_tlen(md->mem_token), &pi->up->tx_pending);
+ ch->txd_irq_srv = md->snext;
+
+ md->data = 0;
+ if (md->mem_token) {
+ /* upcount channel */
+ atomic_sub(OS_mem_token_tlen(md->mem_token), &ch->tx_pending);
+ /* upcount card */
+ atomic_sub(OS_mem_token_tlen(md->mem_token), &pi->up->tx_pending);
#ifdef SBE_WAN256T3_ENABLE
- if (!atomic_read(&pi->up->tx_pending))
- wan256t3_led(pi->up, LED_TX, 0);
+ if (!atomic_read(&pi->up->tx_pending))
+ wan256t3_led(pi->up, LED_TX, 0);
#endif
#ifdef CONFIG_SBE_WAN256T3_NCOMM
- /* callback that our packet was sent */
- {
- int hdlcnum = (pi->portnum * 32 + gchan);
-
- if (hdlcnum >= 228) {
- if (nciProcess_TX_complete)
- (*nciProcess_TX_complete) (hdlcnum,
- getuserbychan(gchan));
- }
- }
+ /* callback that our packet was sent */
+ {
+ int hdlcnum = (pi->portnum * 32 + gchan);
+
+ if (hdlcnum >= 228) {
+ if (nciProcess_TX_complete)
+ (*nciProcess_TX_complete) (hdlcnum,
+ getuserbychan(gchan));
+ }
+ }
#endif /*** CONFIG_SBE_WAN256T3_NCOMM ***/
- OS_mem_token_free_irq(md->mem_token);
- md->mem_token = NULL;
- }
- md->status = 0;
+ OS_mem_token_free_irq(md->mem_token);
+ md->mem_token = NULL;
+ }
+ md->status = 0;
#ifdef RLD_TXFULL_DEBUG
- if (cxt1e1_log_level >= LOG_MONITOR2)
- pr_info("~~ tx_eom: tx_full %x txd_free %d -> %d\n",
- ch->tx_full, ch->txd_free, ch->txd_free + 1);
+ if (cxt1e1_log_level >= LOG_MONITOR2)
+ pr_info("~~ tx_eom: tx_full %x txd_free %d -> %d\n",
+ ch->tx_full, ch->txd_free, ch->txd_free + 1);
#endif
- ++ch->txd_free;
- FLUSH_MEM_WRITE();
+ ++ch->txd_free;
+ FLUSH_MEM_WRITE();
+
+ if ((ch->p.chan_mode != CFG_CH_PROTO_TRANS) && (status & EOBIRQ_ENABLE)) {
+ if (cxt1e1_log_level >= LOG_MONITOR)
+ pr_info("%s: Mode (%x) incorrect EOB status (%x)\n",
+ pi->up->devname, ch->p.chan_mode, status);
+ if ((status & EOMIRQ_ENABLE) == 0)
+ break;
+ }
+ } while ((ch->p.chan_mode != CFG_CH_PROTO_TRANS) && ((status & EOMIRQ_ENABLE) == 0));
+ /*
+ * NOTE: (The above 'while' is coupled w/ previous 'do', way above.) Each
+ * Transparent data buffer has the EOB bit, and NOT the EOM bit, set and
+ * will furthermore have a separate IQD associated with each messages
+ * buffer.
+ */
- if ((ch->p.chan_mode != CFG_CH_PROTO_TRANS) && (status & EOBIRQ_ENABLE)) {
- if (cxt1e1_log_level >= LOG_MONITOR)
- pr_info("%s: Mode (%x) incorrect EOB status (%x)\n",
- pi->up->devname, ch->p.chan_mode, status);
- if ((status & EOMIRQ_ENABLE) == 0)
- break;
- }
- } while ((ch->p.chan_mode != CFG_CH_PROTO_TRANS) && ((status & EOMIRQ_ENABLE) == 0));
- /*
- * NOTE: (The above 'while' is coupled w/ previous 'do', way above.) Each
- * Transparent data buffer has the EOB bit, and NOT the EOM bit, set and
- * will furthermore have a separate IQD associated with each messages
- * buffer.
- */
-
- FLUSH_MEM_READ();
- /*
- * Smooth flow control hysterisis by maintaining task stoppage until half
- * the available write buffers are available.
- */
- if (ch->tx_full && (ch->txd_free >= (ch->txd_num / 2))) {
+ FLUSH_MEM_READ();
/*
- * Then, only releave task stoppage if we actually have enough
- * buffers to service the last requested packet. It may require MORE
- * than half the available!
+ * Smooth flow control hysterisis by maintaining task stoppage until half
+ * the available write buffers are available.
*/
- if (ch->txd_free >= ch->txd_required) {
+ if (ch->tx_full && (ch->txd_free >= (ch->txd_num / 2))) {
+ /*
+ * Then, only releave task stoppage if we actually have enough
+ * buffers to service the last requested packet. It may require MORE
+ * than half the available!
+ */
+ if (ch->txd_free >= ch->txd_required) {
#ifdef RLD_TXFULL_DEBUG
- if (cxt1e1_log_level >= LOG_MONITOR2)
- pr_info("tx_eom[%d]: enable xmit tx_full no more, txd_free %d txd_num/2 %d\n",
- ch->channum,
- ch->txd_free, ch->txd_num / 2);
+ if (cxt1e1_log_level >= LOG_MONITOR2)
+ pr_info("tx_eom[%d]: enable xmit tx_full no more, txd_free %d txd_num/2 %d\n",
+ ch->channum,
+ ch->txd_free, ch->txd_num / 2);
#endif
- ch->tx_full = 0;
- ch->txd_required = 0;
- sd_enable_xmit(ch->user); /* re-enable to catch flow controlled
- * channel */
+ ch->tx_full = 0;
+ ch->txd_required = 0;
+ sd_enable_xmit(ch->user); /* re-enable to catch flow controlled
+ * channel */
+ }
}
- }
#ifdef RLD_TXFULL_DEBUG
- else if (ch->tx_full) {
- if (cxt1e1_log_level >= LOG_MONITOR2)
- pr_info("tx_eom[%d]: bypass TX enable though room available? (txd_free %d txd_num/2 %d)\n",
- ch->channum,
- ch->txd_free, ch->txd_num / 2);
- }
+ else if (ch->tx_full) {
+ if (cxt1e1_log_level >= LOG_MONITOR2)
+ pr_info("tx_eom[%d]: bypass TX enable though room available? (txd_free %d txd_num/2 %d)\n",
+ ch->channum,
+ ch->txd_free, ch->txd_num / 2);
+ }
#endif
- FLUSH_MEM_WRITE();
+ FLUSH_MEM_WRITE();
#if 0
#ifdef SBE_ISR_INLINE
- spin_unlock_irq(&ch->ch_txlock);
+ spin_unlock_irq(&ch->ch_txlock);
#else
- spin_unlock_irqrestore(&ch->ch_txlock, flags);
+ spin_unlock_irqrestore(&ch->ch_txlock, flags);
#endif
#endif
}
static void
musycc_bh_rx_eom(mpi_t *pi, int gchan)
{
- mch_t *ch;
- void *m, *m2;
- struct mdesc *md;
- volatile u_int32_t status;
- u_int32_t error;
-
- ch = pi->chan[gchan];
- if (!ch || ch->state != UP) {
- if (cxt1e1_log_level > LOG_ERROR)
- pr_info("%s: intr: receive EOM on uninitialized channel %d\n",
- pi->up->devname, gchan);
- return;
- }
- if (!ch->mdr)
- return; /* can this happen ? */
-
- for (;;) {
- FLUSH_MEM_READ();
- md = &ch->mdr[ch->rxix_irq_srv];
- status = le32_to_cpu(md->status);
- if (!(status & HOST_RX_OWNED))
- break; /* Not our mdesc, done */
- m = md->mem_token;
- error = (status >> 16) & 0xf;
- if (error == 0) {
+ mch_t *ch;
+ void *m, *m2;
+ struct mdesc *md;
+ volatile u_int32_t status;
+ u_int32_t error;
+
+ ch = pi->chan[gchan];
+ if (!ch || ch->state != UP) {
+ if (cxt1e1_log_level > LOG_ERROR)
+ pr_info("%s: intr: receive EOM on uninitialized channel %d\n",
+ pi->up->devname, gchan);
+ return;
+ }
+ if (!ch->mdr)
+ return; /* can this happen ? */
+
+ for (;;) {
+ FLUSH_MEM_READ();
+ md = &ch->mdr[ch->rxix_irq_srv];
+ status = le32_to_cpu(md->status);
+ if (!(status & HOST_RX_OWNED))
+ break; /* Not our mdesc, done */
+ m = md->mem_token;
+ error = (status >> 16) & 0xf;
+ if (error == 0) {
#ifdef CONFIG_SBE_WAN256T3_NCOMM
- int hdlcnum = (pi->portnum * 32 + gchan);
-
- /*
- * if the packet number belongs to NCOMM, then send it to the TMS
- * driver
- */
- if (hdlcnum >= 228) {
- if (nciProcess_RX_packet)
- (*nciProcess_RX_packet) (hdlcnum, status & 0x3fff, m, ch->user);
- } else
+ int hdlcnum = (pi->portnum * 32 + gchan);
+
+ /*
+ * if the packet number belongs to NCOMM, then send it to the TMS
+ * driver
+ */
+ if (hdlcnum >= 228) {
+ if (nciProcess_RX_packet)
+ (*nciProcess_RX_packet) (hdlcnum, status & 0x3fff, m, ch->user);
+ } else
#endif /*** CONFIG_SBE_WAN256T3_NCOMM ***/
- {
- m2 = OS_mem_token_alloc(cxt1e1_max_mru);
- if (m2) {
- /* substitute the mbuf+cluster */
- md->mem_token = m2;
- md->data = cpu_to_le32(OS_vtophys(
- OS_mem_token_data(m2)));
-
- /* pass the received mbuf upward */
- sd_recv_consume(m, status & LENGTH_MASK, ch->user);
- ch->s.rx_packets++;
- ch->s.rx_bytes += status & LENGTH_MASK;
- } else
- ch->s.rx_dropped++;
- }
- } else if (error == ERR_FCS)
- ch->s.rx_crc_errors++;
- else if (error == ERR_ALIGN)
- ch->s.rx_missed_errors++;
- else if (error == ERR_ABT)
- ch->s.rx_missed_errors++;
- else if (error == ERR_LNG)
- ch->s.rx_length_errors++;
- else if (error == ERR_SHT)
- ch->s.rx_length_errors++;
- FLUSH_MEM_WRITE();
- status = cxt1e1_max_mru;
- if (ch->p.chan_mode == CFG_CH_PROTO_TRANS)
- status |= EOBIRQ_ENABLE;
- md->status = cpu_to_le32(status);
-
- /* Check next mdesc in the ring */
- if (++ch->rxix_irq_srv >= ch->rxd_num)
- ch->rxix_irq_srv = 0;
- FLUSH_MEM_WRITE();
- }
+ {
+ m2 = OS_mem_token_alloc(cxt1e1_max_mru);
+ if (m2) {
+ /* substitute the mbuf+cluster */
+ md->mem_token = m2;
+ md->data = cpu_to_le32(OS_vtophys(
+ OS_mem_token_data(m2)));
+
+ /* pass the received mbuf upward */
+ sd_recv_consume(m, status & LENGTH_MASK, ch->user);
+ ch->s.rx_packets++;
+ ch->s.rx_bytes += status & LENGTH_MASK;
+ } else
+ ch->s.rx_dropped++;
+ }
+ } else if (error == ERR_FCS)
+ ch->s.rx_crc_errors++;
+ else if (error == ERR_ALIGN)
+ ch->s.rx_missed_errors++;
+ else if (error == ERR_ABT)
+ ch->s.rx_missed_errors++;
+ else if (error == ERR_LNG)
+ ch->s.rx_length_errors++;
+ else if (error == ERR_SHT)
+ ch->s.rx_length_errors++;
+ FLUSH_MEM_WRITE();
+ status = cxt1e1_max_mru;
+ if (ch->p.chan_mode == CFG_CH_PROTO_TRANS)
+ status |= EOBIRQ_ENABLE;
+ md->status = cpu_to_le32(status);
+
+ /* Check next mdesc in the ring */
+ if (++ch->rxix_irq_srv >= ch->rxd_num)
+ ch->rxix_irq_srv = 0;
+ FLUSH_MEM_WRITE();
+ }
}
irqreturn_t
musycc_intr_th_handler(void *devp)
{
- ci_t *ci = (ci_t *) devp;
- volatile u_int32_t status, currInt = 0;
- u_int32_t nextInt, intCnt;
-
- /*
- * Hardware not available, potential interrupt hang. But since interrupt
- * might be shared, just return.
- */
- if (ci->state == C_INIT)
- return IRQ_NONE;
- /*
- * Marked as hardware available. Don't service interrupts, just clear the
- * event.
- */
-
- if (ci->state == C_IDLE) {
- status = pci_read_32((u_int32_t *) &ci->reg->isd);
+ ci_t *ci = (ci_t *) devp;
+ volatile u_int32_t status, currInt = 0;
+ u_int32_t nextInt, intCnt;
- /* clear the interrupt but process nothing else */
- pci_write_32((u_int32_t *) &ci->reg->isd, status);
- return IRQ_HANDLED;
- }
- FLUSH_PCI_READ();
- FLUSH_MEM_READ();
-
- status = pci_read_32((u_int32_t *) &ci->reg->isd);
- nextInt = INTRPTS_NEXTINT(status);
- intCnt = INTRPTS_INTCNT(status);
- ci->intlog.drvr_intr_thcount++;
-
- /*********************************************************/
- /* HW Bug Fix */
- /* ---------- */
- /* Under certain PCI Bus loading conditions, the */
- /* MUSYCC looses the data associated with an update */
- /* of its ISD and erroneously returns the immediately */
- /* preceding 'nextInt' value. However, the 'intCnt' */
- /* value appears to be correct. By not starting service */
- /* where the 'missing' 'nextInt' SHOULD point causes */
- /* the IQD not to be serviced - the 'not serviced' */
- /* entries then remain and continue to increase as more */
- /* incorrect ISD's are encountered. */
- /*********************************************************/
-
- if (nextInt != INTRPTS_NEXTINT(ci->intlog.this_status_new)) {
- if (cxt1e1_log_level >= LOG_MONITOR) {
- pr_info("%s: note - updated ISD from %08x to %08x\n",
- ci->devname, status,
- (status & (~INTRPTS_NEXTINT_M)) | ci->intlog.this_status_new);
- }
/*
- * Replace bogus status with software corrected value.
- *
- * It's not known whether, during this problem occurrence, if the
- * INTFULL bit is correctly reported or not.
+ * Hardware not available, potential interrupt hang. But since interrupt
+ * might be shared, just return.
*/
- status = (status & (~INTRPTS_NEXTINT_M)) | (ci->intlog.this_status_new);
- nextInt = INTRPTS_NEXTINT(status);
- }
- /**********************************************/
- /* Cn847x Bug Fix */
- /* -------------- */
- /* Fix for inability to write back same index */
- /* as read for a full interrupt queue. */
- /**********************************************/
-
- if (intCnt == INT_QUEUE_SIZE)
- currInt = ((intCnt - 1) + nextInt) & (INT_QUEUE_SIZE - 1);
- else
- /************************************************/
- /* Interrupt Write Location Issues */
- /* ------------------------------- */
- /* When the interrupt status descriptor is */
- /* written, the interrupt line is de-asserted */
- /* by the Cn847x. In the case of MIPS */
- /* microprocessors, this must occur at the */
- /* beginning of the interrupt handler so that */
- /* the interrupt handle is not re-entered due */
- /* to interrupt dis-assertion latency. */
- /* In the case of all other processors, this */
- /* action should occur at the end of the */
- /* interrupt handler to avoid overwriting the */
- /* interrupt queue. */
- /************************************************/
-
- if (intCnt)
- currInt = (intCnt + nextInt) & (INT_QUEUE_SIZE - 1);
- else {
+ if (ci->state == C_INIT)
+ return IRQ_NONE;
/*
- * NOTE: Servicing an interrupt whose ISD contains a count of ZERO
- * can be indicative of a Shared Interrupt chain. Our driver can be
- * called from the system's interrupt handler as a matter of the OS
- * walking the chain. As the chain is walked, the interrupt will
- * eventually be serviced by the correct driver/handler.
+ * Marked as hardware available. Don't service interrupts, just clear the
+ * event.
*/
+
+ if (ci->state == C_IDLE) {
+ status = pci_read_32((u_int32_t *) &ci->reg->isd);
+
+ /* clear the interrupt but process nothing else */
+ pci_write_32((u_int32_t *) &ci->reg->isd, status);
+ return IRQ_HANDLED;
+ }
+ FLUSH_PCI_READ();
+ FLUSH_MEM_READ();
+
+ status = pci_read_32((u_int32_t *) &ci->reg->isd);
+ nextInt = INTRPTS_NEXTINT(status);
+ intCnt = INTRPTS_INTCNT(status);
+ ci->intlog.drvr_intr_thcount++;
+
+ /*********************************************************/
+ /* HW Bug Fix */
+ /* ---------- */
+ /* Under certain PCI Bus loading conditions, the */
+ /* MUSYCC looses the data associated with an update */
+ /* of its ISD and erroneously returns the immediately */
+ /* preceding 'nextInt' value. However, the 'intCnt' */
+ /* value appears to be correct. By not starting service */
+ /* where the 'missing' 'nextInt' SHOULD point causes */
+ /* the IQD not to be serviced - the 'not serviced' */
+ /* entries then remain and continue to increase as more */
+ /* incorrect ISD's are encountered. */
+ /*********************************************************/
+
+ if (nextInt != INTRPTS_NEXTINT(ci->intlog.this_status_new)) {
+ if (cxt1e1_log_level >= LOG_MONITOR) {
+ pr_info("%s: note - updated ISD from %08x to %08x\n",
+ ci->devname, status,
+ (status & (~INTRPTS_NEXTINT_M)) | ci->intlog.this_status_new);
+ }
+ /*
+ * Replace bogus status with software corrected value.
+ *
+ * It's not known whether, during this problem occurrence, if the
+ * INTFULL bit is correctly reported or not.
+ */
+ status = (status & (~INTRPTS_NEXTINT_M)) | (ci->intlog.this_status_new);
+ nextInt = INTRPTS_NEXTINT(status);
+ }
+ /**********************************************/
+ /* Cn847x Bug Fix */
+ /* -------------- */
+ /* Fix for inability to write back same index */
+ /* as read for a full interrupt queue. */
+ /**********************************************/
+
+ if (intCnt == INT_QUEUE_SIZE)
+ currInt = ((intCnt - 1) + nextInt) & (INT_QUEUE_SIZE - 1);
+ else
+ /************************************************/
+ /* Interrupt Write Location Issues */
+ /* ------------------------------- */
+ /* When the interrupt status descriptor is */
+ /* written, the interrupt line is de-asserted */
+ /* by the Cn847x. In the case of MIPS */
+ /* microprocessors, this must occur at the */
+ /* beginning of the interrupt handler so that */
+ /* the interrupt handle is not re-entered due */
+ /* to interrupt dis-assertion latency. */
+ /* In the case of all other processors, this */
+ /* action should occur at the end of the */
+ /* interrupt handler to avoid overwriting the */
+ /* interrupt queue. */
+ /************************************************/
+
+ if (intCnt)
+ currInt = (intCnt + nextInt) & (INT_QUEUE_SIZE - 1);
+ else {
+ /*
+ * NOTE: Servicing an interrupt whose ISD contains a count of ZERO
+ * can be indicative of a Shared Interrupt chain. Our driver can be
+ * called from the system's interrupt handler as a matter of the OS
+ * walking the chain. As the chain is walked, the interrupt will
+ * eventually be serviced by the correct driver/handler.
+ */
#if 0
- /* chained interrupt = not ours */
- pr_info(">> %s: intCnt NULL, sts %x, possibly a chained interrupt!\n",
- ci->devname, status);
+ /* chained interrupt = not ours */
+ pr_info(">> %s: intCnt NULL, sts %x, possibly a chained interrupt!\n",
+ ci->devname, status);
#endif
- return IRQ_NONE;
- }
+ return IRQ_NONE;
+ }
- ci->iqp_tailx = currInt;
+ ci->iqp_tailx = currInt;
- currInt <<= INTRPTS_NEXTINT_S;
- ci->intlog.last_status_new = ci->intlog.this_status_new;
- ci->intlog.this_status_new = currInt;
+ currInt <<= INTRPTS_NEXTINT_S;
+ ci->intlog.last_status_new = ci->intlog.this_status_new;
+ ci->intlog.this_status_new = currInt;
- if ((cxt1e1_log_level >= LOG_WARN) && (status & INTRPTS_INTFULL_M))
- pr_info("%s: Interrupt queue full condition occurred\n", ci->devname);
- if (cxt1e1_log_level >= LOG_DEBUG)
- pr_info("%s: interrupts pending, isd @ 0x%p: %x curr %d cnt %d NEXT %d\n",
- ci->devname, &ci->reg->isd,
- status, nextInt, intCnt, (intCnt + nextInt) & (INT_QUEUE_SIZE - 1));
+ if ((cxt1e1_log_level >= LOG_WARN) && (status & INTRPTS_INTFULL_M))
+ pr_info("%s: Interrupt queue full condition occurred\n", ci->devname);
+ if (cxt1e1_log_level >= LOG_DEBUG)
+ pr_info("%s: interrupts pending, isd @ 0x%p: %x curr %d cnt %d NEXT %d\n",
+ ci->devname, &ci->reg->isd,
+ status, nextInt, intCnt, (intCnt + nextInt) & (INT_QUEUE_SIZE - 1));
- FLUSH_MEM_WRITE();
+ FLUSH_MEM_WRITE();
#if defined(SBE_ISR_TASKLET)
- pci_write_32((u_int32_t *) &ci->reg->isd, currInt);
- atomic_inc(&ci->bh_pending);
- tasklet_schedule(&ci->ci_musycc_isr_tasklet);
+ pci_write_32((u_int32_t *) &ci->reg->isd, currInt);
+ atomic_inc(&ci->bh_pending);
+ tasklet_schedule(&ci->ci_musycc_isr_tasklet);
#elif defined(SBE_ISR_IMMEDIATE)
- pci_write_32((u_int32_t *) &ci->reg->isd, currInt);
- atomic_inc(&ci->bh_pending);
- queue_task(&ci->ci_musycc_isr_tq, &tq_immediate);
- mark_bh(IMMEDIATE_BH);
+ pci_write_32((u_int32_t *) &ci->reg->isd, currInt);
+ atomic_inc(&ci->bh_pending);
+ queue_task(&ci->ci_musycc_isr_tq, &tq_immediate);
+ mark_bh(IMMEDIATE_BH);
#elif defined(SBE_ISR_INLINE)
- (void) musycc_intr_bh_tasklet(ci);
- pci_write_32((u_int32_t *) &ci->reg->isd, currInt);
+ (void) musycc_intr_bh_tasklet(ci);
+ pci_write_32((u_int32_t *) &ci->reg->isd, currInt);
#endif
- return IRQ_HANDLED;
+ return IRQ_HANDLED;
}
#endif
musycc_intr_bh_tasklet(ci_t *ci)
{
- mpi_t *pi;
- mch_t *ch;
- unsigned int intCnt;
- volatile u_int32_t currInt = 0;
- volatile unsigned int headx, tailx;
- int readCount, loopCount;
- int group, gchan, event, err, tx;
- u_int32_t badInt = INT_EMPTY_ENTRY;
- u_int32_t badInt2 = INT_EMPTY_ENTRY2;
-
- /*
- * Hardware not available, potential interrupt hang. But since interrupt
- * might be shared, just return.
- */
- if ((drvr_state != SBE_DRVR_AVAILABLE) || (ci->state == C_INIT)) {
+ mpi_t *pi;
+ mch_t *ch;
+ unsigned int intCnt;
+ volatile u_int32_t currInt = 0;
+ volatile unsigned int headx, tailx;
+ int readCount, loopCount;
+ int group, gchan, event, err, tx;
+ u_int32_t badInt = INT_EMPTY_ENTRY;
+ u_int32_t badInt2 = INT_EMPTY_ENTRY2;
+
+ /*
+ * Hardware not available, potential interrupt hang. But since interrupt
+ * might be shared, just return.
+ */
+ if ((drvr_state != SBE_DRVR_AVAILABLE) || (ci->state == C_INIT)) {
#if defined(SBE_ISR_IMMEDIATE)
- return 0L;
+ return 0L;
#else
- return;
+ return;
#endif
- }
+ }
#if defined(SBE_ISR_TASKLET) || defined(SBE_ISR_IMMEDIATE)
- if (drvr_state != SBE_DRVR_AVAILABLE) {
+ if (drvr_state != SBE_DRVR_AVAILABLE) {
#if defined(SBE_ISR_TASKLET)
- return;
+ return;
#elif defined(SBE_ISR_IMMEDIATE)
- return 0L;
+ return 0L;
#endif
- }
+ }
#elif defined(SBE_ISR_INLINE)
- /* no semaphore taken, no double checks */
+ /* no semaphore taken, no double checks */
#endif
- ci->intlog.drvr_intr_bhcount++;
- FLUSH_MEM_READ();
- {
- unsigned int bh = atomic_read(&ci->bh_pending);
-
- max_bh = max(bh, max_bh);
- }
- atomic_set(&ci->bh_pending, 0);/* if here, no longer pending */
- while ((headx = ci->iqp_headx) != (tailx = ci->iqp_tailx)) {
- intCnt = (tailx >= headx) ? (tailx - headx) : (tailx - headx + INT_QUEUE_SIZE);
- currInt = le32_to_cpu(ci->iqd_p[headx]);
-
- max_intcnt = max(intCnt, max_intcnt); /* RLD DEBUG */
-
- /**************************************************/
- /* HW Bug Fix */
- /* ---------- */
- /* The following code checks for the condition */
- /* of interrupt assertion before interrupt */
- /* queue update. This is a problem on several */
- /* PCI-Local bridge chips found on some products. */
- /**************************************************/
+ ci->intlog.drvr_intr_bhcount++;
+ FLUSH_MEM_READ();
+ {
+ unsigned int bh = atomic_read(&ci->bh_pending);
- readCount = 0;
- if ((currInt == badInt) || (currInt == badInt2))
- ci->intlog.drvr_int_failure++;
-
- while ((currInt == badInt) || (currInt == badInt2)) {
- for (loopCount = 0; loopCount < 0x30; loopCount++)
- OS_uwait_dummy(); /* use call to avoid optimization removal
- * of dummy delay */
- FLUSH_MEM_READ();
- currInt = le32_to_cpu(ci->iqd_p[headx]);
- if (readCount++ > 20)
- break;
+ max_bh = max(bh, max_bh);
}
+ atomic_set(&ci->bh_pending, 0);/* if here, no longer pending */
+ while ((headx = ci->iqp_headx) != (tailx = ci->iqp_tailx)) {
+ intCnt = (tailx >= headx) ? (tailx - headx) : (tailx - headx + INT_QUEUE_SIZE);
+ currInt = le32_to_cpu(ci->iqd_p[headx]);
+
+ max_intcnt = max(intCnt, max_intcnt); /* RLD DEBUG */
+
+ /**************************************************/
+ /* HW Bug Fix */
+ /* ---------- */
+ /* The following code checks for the condition */
+ /* of interrupt assertion before interrupt */
+ /* queue update. This is a problem on several */
+ /* PCI-Local bridge chips found on some products. */
+ /**************************************************/
+
+ readCount = 0;
+ if ((currInt == badInt) || (currInt == badInt2))
+ ci->intlog.drvr_int_failure++;
+
+ while ((currInt == badInt) || (currInt == badInt2)) {
+ for (loopCount = 0; loopCount < 0x30; loopCount++)
+ OS_uwait_dummy(); /* use call to avoid optimization removal
+ * of dummy delay */
+ FLUSH_MEM_READ();
+ currInt = le32_to_cpu(ci->iqd_p[headx]);
+ if (readCount++ > 20)
+ break;
+ }
- if ((currInt == badInt) || (currInt == badInt2)) { /* catch failure of Bug
- * Fix checking */
- if (cxt1e1_log_level >= LOG_WARN)
- pr_info("%s: Illegal Interrupt Detected @ 0x%p, mod %d.)\n",
- ci->devname, &ci->iqd_p[headx], headx);
-
- /*
- * If the descriptor has not recovered, then leaving the EMPTY
- * entry set will not signal to the MUSYCC that this descriptor
- * has been serviced. The Interrupt Queue can then start losing
- * available descriptors and MUSYCC eventually encounters and
- * reports the INTFULL condition. Per manual, changing any bit
- * marks descriptor as available, thus the use of different
- * EMPTY_ENTRY values.
- */
-
- if (currInt == badInt)
- ci->iqd_p[headx] = __constant_cpu_to_le32(INT_EMPTY_ENTRY2);
- else
- ci->iqd_p[headx] = __constant_cpu_to_le32(INT_EMPTY_ENTRY);
- ci->iqp_headx = (headx + 1) & (INT_QUEUE_SIZE - 1); /* insure wrapness */
- FLUSH_MEM_WRITE();
- FLUSH_MEM_READ();
- continue;
- }
- group = INTRPT_GRP(currInt);
- gchan = INTRPT_CH(currInt);
- event = INTRPT_EVENT(currInt);
- err = INTRPT_ERROR(currInt);
- tx = currInt & INTRPT_DIR_M;
+ if ((currInt == badInt) || (currInt == badInt2)) { /* catch failure of Bug
+ * Fix checking */
+ if (cxt1e1_log_level >= LOG_WARN)
+ pr_info("%s: Illegal Interrupt Detected @ 0x%p, mod %d.)\n",
+ ci->devname, &ci->iqd_p[headx], headx);
+
+ /*
+ * If the descriptor has not recovered, then leaving the EMPTY
+ * entry set will not signal to the MUSYCC that this descriptor
+ * has been serviced. The Interrupt Queue can then start losing
+ * available descriptors and MUSYCC eventually encounters and
+ * reports the INTFULL condition. Per manual, changing any bit
+ * marks descriptor as available, thus the use of different
+ * EMPTY_ENTRY values.
+ */
+
+ if (currInt == badInt)
+ ci->iqd_p[headx] = __constant_cpu_to_le32(INT_EMPTY_ENTRY2);
+ else
+ ci->iqd_p[headx] = __constant_cpu_to_le32(INT_EMPTY_ENTRY);
+ ci->iqp_headx = (headx + 1) & (INT_QUEUE_SIZE - 1); /* insure wrapness */
+ FLUSH_MEM_WRITE();
+ FLUSH_MEM_READ();
+ continue;
+ }
+ group = INTRPT_GRP(currInt);
+ gchan = INTRPT_CH(currInt);
+ event = INTRPT_EVENT(currInt);
+ err = INTRPT_ERROR(currInt);
+ tx = currInt & INTRPT_DIR_M;
- ci->iqd_p[headx] = __constant_cpu_to_le32(INT_EMPTY_ENTRY);
- FLUSH_MEM_WRITE();
+ ci->iqd_p[headx] = __constant_cpu_to_le32(INT_EMPTY_ENTRY);
+ FLUSH_MEM_WRITE();
- if (cxt1e1_log_level >= LOG_DEBUG) {
- if (err != 0)
- pr_info(" %08x -> err: %2d,", currInt, err);
+ if (cxt1e1_log_level >= LOG_DEBUG) {
+ if (err != 0)
+ pr_info(" %08x -> err: %2d,", currInt, err);
- pr_info("+ interrupt event: %d, grp: %d, chan: %2d, side: %cX\n",
- event, group, gchan, tx ? 'T' : 'R');
- }
- pi = &ci->port[group]; /* notice that here we assume 1-1 group -
- * port mapping */
- ch = pi->chan[gchan];
- switch (event) {
- case EVE_SACK: /* Service Request Acknowledge */
- if (cxt1e1_log_level >= LOG_DEBUG) {
- volatile u_int32_t r;
-
- r = pci_read_32((u_int32_t *) &pi->reg->srd);
- pr_info("- SACK cmd: %08x (hdw= %08x)\n", pi->sr_last, r);
- }
- SD_SEM_GIVE(&pi->sr_sem_wait); /* wake up waiting process */
- break;
- case EVE_CHABT: /* Change To Abort Code (0x7e -> 0xff) */
- case EVE_CHIC: /* Change To Idle Code (0xff -> 0x7e) */
- break;
- case EVE_EOM: /* End Of Message */
- case EVE_EOB: /* End Of Buffer (Transparent mode) */
- if (tx)
- musycc_bh_tx_eom(pi, gchan);
- else
- musycc_bh_rx_eom(pi, gchan);
+ pr_info("+ interrupt event: %d, grp: %d, chan: %2d, side: %cX\n",
+ event, group, gchan, tx ? 'T' : 'R');
+ }
+ pi = &ci->port[group]; /* notice that here we assume 1-1 group -
+ * port mapping */
+ ch = pi->chan[gchan];
+ switch (event) {
+ case EVE_SACK: /* Service Request Acknowledge */
+ if (cxt1e1_log_level >= LOG_DEBUG) {
+ volatile u_int32_t r;
+
+ r = pci_read_32((u_int32_t *) &pi->reg->srd);
+ pr_info("- SACK cmd: %08x (hdw= %08x)\n", pi->sr_last, r);
+ }
+ SD_SEM_GIVE(&pi->sr_sem_wait); /* wake up waiting process */
+ break;
+ case EVE_CHABT: /* Change To Abort Code (0x7e -> 0xff) */
+ case EVE_CHIC: /* Change To Idle Code (0xff -> 0x7e) */
+ break;
+ case EVE_EOM: /* End Of Message */
+ case EVE_EOB: /* End Of Buffer (Transparent mode) */
+ if (tx)
+ musycc_bh_tx_eom(pi, gchan);
+ else
+ musycc_bh_rx_eom(pi, gchan);
#if 0
- break;
+ break;
#else
- /*
- * MUSYCC Interrupt Descriptor section states that EOB and EOM
- * can be combined with the NONE error (as well as others). So
- * drop thru to catch this...
- */
+ /*
+ * MUSYCC Interrupt Descriptor section states that EOB and EOM
+ * can be combined with the NONE error (as well as others). So
+ * drop thru to catch this...
+ */
#endif
- case EVE_NONE:
- if (err == ERR_SHT)
- ch->s.rx_length_errors++;
- break;
- default:
- if (cxt1e1_log_level >= LOG_WARN)
- pr_info("%s: unexpected interrupt event: %d, iqd[%d]: %08x, port: %d\n", ci->devname,
- event, headx, currInt, group);
- break;
- } /* switch on event */
-
+ case EVE_NONE:
+ if (err == ERR_SHT)
+ ch->s.rx_length_errors++;
+ break;
+ default:
+ if (cxt1e1_log_level >= LOG_WARN)
+ pr_info("%s: unexpected interrupt event: %d, iqd[%d]: %08x, port: %d\n", ci->devname,
+ event, headx, currInt, group);
+ break;
+ } /* switch on event */
- /*
- * Per MUSYCC Manual, Section 6.4.8.3 [Transmit Errors], TX errors
- * are service-affecting and require action to resume normal
- * bit-level processing.
- */
-
- switch (err) {
- case ERR_ONR:
- /*
- * Per MUSYCC manual, Section 6.4.8.3 [Transmit Errors], this
- * error requires Transmit channel reactivation.
- *
- * Per MUSYCC manual, Section 6.4.8.4 [Receive Errors], this error
- * requires Receive channel reactivation.
- */
- if (tx) {
-
- /*
- * TX ONR Error only occurs when channel is configured for
- * Transparent Mode. However, this code will catch and
- * re-activate on ANY TX ONR error.
- */
/*
- * Set flag to re-enable on any next transmit attempt.
+ * Per MUSYCC Manual, Section 6.4.8.3 [Transmit Errors], TX errors
+ * are service-affecting and require action to resume normal
+ * bit-level processing.
*/
- ch->ch_start_tx = CH_START_TX_ONR;
- {
+ switch (err) {
+ case ERR_ONR:
+ /*
+ * Per MUSYCC manual, Section 6.4.8.3 [Transmit Errors], this
+ * error requires Transmit channel reactivation.
+ *
+ * Per MUSYCC manual, Section 6.4.8.4 [Receive Errors], this error
+ * requires Receive channel reactivation.
+ */
+ if (tx) {
+
+ /*
+ * TX ONR Error only occurs when channel is configured for
+ * Transparent Mode. However, this code will catch and
+ * re-activate on ANY TX ONR error.
+ */
+
+ /*
+ * Set flag to re-enable on any next transmit attempt.
+ */
+ ch->ch_start_tx = CH_START_TX_ONR;
+
+ {
#ifdef RLD_TRANS_DEBUG
- if (1 || cxt1e1_log_level >= LOG_MONITOR)
+ if (1 || cxt1e1_log_level >= LOG_MONITOR)
#else
- if (cxt1e1_log_level >= LOG_MONITOR)
+ if (cxt1e1_log_level >= LOG_MONITOR)
#endif
- {
- pr_info("%s: TX buffer underflow [ONR] on channel %d, mode %x QStopped %x free %d\n",
- ci->devname, ch->channum, ch->p.chan_mode, sd_queue_stopped(ch->user), ch->txd_free);
+ {
+ pr_info("%s: TX buffer underflow [ONR] on channel %d, mode %x QStopped %x free %d\n",
+ ci->devname, ch->channum, ch->p.chan_mode, sd_queue_stopped(ch->user), ch->txd_free);
#ifdef RLD_DEBUG
- if (ch->p.chan_mode == 2) { /* problem = ONR on HDLC
- * mode */
- pr_info("++ Failed Last %x Next %x QStopped %x, start_tx %x tx_full %d txd_free %d mode %x\n",
- (u_int32_t) ch->txd_irq_srv, (u_int32_t) ch->txd_usr_add,
- sd_queue_stopped(ch->user),
- ch->ch_start_tx, ch->tx_full, ch->txd_free, ch->p.chan_mode);
- musycc_dump_txbuffer_ring(ch, 0);
- }
+ if (ch->p.chan_mode == 2) { /* problem = ONR on HDLC
+ * mode */
+ pr_info("++ Failed Last %x Next %x QStopped %x, start_tx %x tx_full %d txd_free %d mode %x\n",
+ (u_int32_t) ch->txd_irq_srv, (u_int32_t) ch->txd_usr_add,
+ sd_queue_stopped(ch->user),
+ ch->ch_start_tx, ch->tx_full, ch->txd_free, ch->p.chan_mode);
+ musycc_dump_txbuffer_ring(ch, 0);
+ }
#endif
- }
- }
- } else { /* RX buffer overrun */
- /*
- * Per MUSYCC manual, Section 6.4.8.4 [Receive Errors],
- * channel recovery for this RX ONR error IS required. It is
- * also suggested to increase the number of receive buffers
- * for this channel. Receive channel reactivation IS
- * required, and data has been lost.
- */
- ch->s.rx_over_errors++;
- ch->ch_start_rx = CH_START_RX_ONR;
+ }
+ }
+ } else { /* RX buffer overrun */
+ /*
+ * Per MUSYCC manual, Section 6.4.8.4 [Receive Errors],
+ * channel recovery for this RX ONR error IS required. It is
+ * also suggested to increase the number of receive buffers
+ * for this channel. Receive channel reactivation IS
+ * required, and data has been lost.
+ */
+ ch->s.rx_over_errors++;
+ ch->ch_start_rx = CH_START_RX_ONR;
+
+ if (cxt1e1_log_level >= LOG_WARN) {
+ pr_info("%s: RX buffer overflow [ONR] on channel %d, mode %x\n",
+ ci->devname, ch->channum, ch->p.chan_mode);
+ //musycc_dump_rxbuffer_ring (ch, 0); /* RLD DEBUG */
+ }
+ }
+ musycc_chan_restart(ch);
+ break;
+ case ERR_BUF:
+ if (tx) {
+ ch->s.tx_fifo_errors++;
+ ch->ch_start_tx = CH_START_TX_BUF;
+ /*
+ * Per MUSYCC manual, Section 6.4.8.3 [Transmit Errors],
+ * this BUFF error requires Transmit channel reactivation.
+ */
+ if (cxt1e1_log_level >= LOG_MONITOR)
+ pr_info("%s: TX buffer underrun [BUFF] on channel %d, mode %x\n",
+ ci->devname, ch->channum, ch->p.chan_mode);
+ } else { /* RX buffer overrun */
+ ch->s.rx_over_errors++;
+ /*
+ * Per MUSYCC manual, Section 6.4.8.4 [Receive Errors], HDLC
+ * mode requires NO recovery for this RX BUFF error is
+ * required. It is suggested to increase the FIFO buffer
+ * space for this channel. Receive channel reactivation is
+ * not required, but data has been lost.
+ */
+ if (cxt1e1_log_level >= LOG_WARN)
+ pr_info("%s: RX buffer overrun [BUFF] on channel %d, mode %x\n",
+ ci->devname, ch->channum, ch->p.chan_mode);
+ /*
+ * Per MUSYCC manual, Section 6.4.9.4 [Receive Errors],
+ * Transparent mode DOES require recovery for the RX BUFF
+ * error. It is suggested to increase the FIFO buffer space
+ * for this channel. Receive channel reactivation IS
+ * required and data has been lost.
+ */
+ if (ch->p.chan_mode == CFG_CH_PROTO_TRANS)
+ ch->ch_start_rx = CH_START_RX_BUF;
+ }
- if (cxt1e1_log_level >= LOG_WARN) {
- pr_info("%s: RX buffer overflow [ONR] on channel %d, mode %x\n",
- ci->devname, ch->channum, ch->p.chan_mode);
- //musycc_dump_rxbuffer_ring (ch, 0); /* RLD DEBUG */
- }
- }
- musycc_chan_restart(ch);
- break;
- case ERR_BUF:
- if (tx) {
- ch->s.tx_fifo_errors++;
- ch->ch_start_tx = CH_START_TX_BUF;
- /*
- * Per MUSYCC manual, Section 6.4.8.3 [Transmit Errors],
- * this BUFF error requires Transmit channel reactivation.
- */
- if (cxt1e1_log_level >= LOG_MONITOR)
- pr_info("%s: TX buffer underrun [BUFF] on channel %d, mode %x\n",
- ci->devname, ch->channum, ch->p.chan_mode);
- } else { /* RX buffer overrun */
- ch->s.rx_over_errors++;
- /*
- * Per MUSYCC manual, Section 6.4.8.4 [Receive Errors], HDLC
- * mode requires NO recovery for this RX BUFF error is
- * required. It is suggested to increase the FIFO buffer
- * space for this channel. Receive channel reactivation is
- * not required, but data has been lost.
- */
- if (cxt1e1_log_level >= LOG_WARN)
- pr_info("%s: RX buffer overrun [BUFF] on channel %d, mode %x\n",
- ci->devname, ch->channum, ch->p.chan_mode);
- /*
- * Per MUSYCC manual, Section 6.4.9.4 [Receive Errors],
- * Transparent mode DOES require recovery for the RX BUFF
- * error. It is suggested to increase the FIFO buffer space
- * for this channel. Receive channel reactivation IS
- * required and data has been lost.
- */
- if (ch->p.chan_mode == CFG_CH_PROTO_TRANS)
- ch->ch_start_rx = CH_START_RX_BUF;
- }
+ if (tx || (ch->p.chan_mode == CFG_CH_PROTO_TRANS))
+ musycc_chan_restart(ch);
+ break;
+ default:
+ break;
+ } /* switch on err */
+
+ /* Check for interrupt lost condition */
+ if ((currInt & INTRPT_ILOST_M) && (cxt1e1_log_level >= LOG_ERROR))
+ pr_info("%s: Interrupt queue overflow - ILOST asserted\n",
+ ci->devname);
+ ci->iqp_headx = (headx + 1) & (INT_QUEUE_SIZE - 1); /* insure wrapness */
+ FLUSH_MEM_WRITE();
+ FLUSH_MEM_READ();
+ } /* while */
+ if ((cxt1e1_log_level >= LOG_MONITOR2) && (ci->iqp_headx != ci->iqp_tailx)) {
+ int bh;
- if (tx || (ch->p.chan_mode == CFG_CH_PROTO_TRANS))
- musycc_chan_restart(ch);
- break;
- default:
- break;
- } /* switch on err */
-
- /* Check for interrupt lost condition */
- if ((currInt & INTRPT_ILOST_M) && (cxt1e1_log_level >= LOG_ERROR))
- pr_info("%s: Interrupt queue overflow - ILOST asserted\n",
- ci->devname);
- ci->iqp_headx = (headx + 1) & (INT_QUEUE_SIZE - 1); /* insure wrapness */
- FLUSH_MEM_WRITE();
- FLUSH_MEM_READ();
- } /* while */
- if ((cxt1e1_log_level >= LOG_MONITOR2) && (ci->iqp_headx != ci->iqp_tailx)) {
- int bh;
-
- bh = atomic_read(&CI->bh_pending);
- pr_info("_bh_: late arrivals, head %d != tail %d, pending %d\n",
- ci->iqp_headx, ci->iqp_tailx, bh);
- }
+ bh = atomic_read(&CI->bh_pending);
+ pr_info("_bh_: late arrivals, head %d != tail %d, pending %d\n",
+ ci->iqp_headx, ci->iqp_tailx, bh);
+ }
#if defined(SBE_ISR_IMMEDIATE)
- return 0L;
+ return 0L;
#endif
- /* else, nothing returned */
+ /* else, nothing returned */
}
#if 0
-int __init
+ int __init
musycc_new_chan(ci_t *ci, int channum, void *user)
{
- mch_t *ch;
+ mch_t *ch;
- ch = ci->port[channum / MUSYCC_NCHANS].chan[channum % MUSYCC_NCHANS];
+ ch = ci->port[channum / MUSYCC_NCHANS].chan[channum % MUSYCC_NCHANS];
- if (ch->state != UNASSIGNED)
- return EEXIST;
- /* NOTE: mch_t already cleared during OS_kmalloc() */
- ch->state = DOWN;
- ch->user = user;
+ if (ch->state != UNASSIGNED)
+ return EEXIST;
+ /* NOTE: mch_t already cleared during OS_kmalloc() */
+ ch->state = DOWN;
+ ch->user = user;
#if 0
- ch->status = 0;
- ch->p.status = 0;
- ch->p.intr_mask = 0;
+ ch->status = 0;
+ ch->p.status = 0;
+ ch->p.intr_mask = 0;
#endif
- ch->p.chan_mode = CFG_CH_PROTO_HDLC_FCS16;
- ch->p.idlecode = CFG_CH_FLAG_7E;
- ch->p.pad_fill_count = 2;
- spin_lock_init(&ch->ch_rxlock);
- spin_lock_init(&ch->ch_txlock);
+ ch->p.chan_mode = CFG_CH_PROTO_HDLC_FCS16;
+ ch->p.idlecode = CFG_CH_FLAG_7E;
+ ch->p.pad_fill_count = 2;
+ spin_lock_init(&ch->ch_rxlock);
+ spin_lock_init(&ch->ch_txlock);
- return 0;
+ return 0;
}
#endif
#ifdef SBE_PMCC4_ENABLE
-status_t
+ status_t
musycc_chan_down(ci_t *dummy, int channum)
{
- mpi_t *pi;
- mch_t *ch;
- int i, gchan;
-
- ch = sd_find_chan(dummy, channum);
- if (!ch)
- return -EINVAL;
- pi = ch->up;
- gchan = ch->gchan;
-
- /* Deactivate the channel */
- musycc_serv_req(pi, SR_CHANNEL_DEACTIVATE | SR_RX_DIRECTION | gchan);
- ch->ch_start_rx = 0;
- musycc_serv_req(pi, SR_CHANNEL_DEACTIVATE | SR_TX_DIRECTION | gchan);
- ch->ch_start_tx = 0;
-
- if (ch->state == DOWN)
+ mpi_t *pi;
+ mch_t *ch;
+ int i, gchan;
+
+ ch = sd_find_chan(dummy, channum);
+ if (!ch)
+ return -EINVAL;
+ pi = ch->up;
+ gchan = ch->gchan;
+
+ /* Deactivate the channel */
+ musycc_serv_req(pi, SR_CHANNEL_DEACTIVATE | SR_RX_DIRECTION | gchan);
+ ch->ch_start_rx = 0;
+ musycc_serv_req(pi, SR_CHANNEL_DEACTIVATE | SR_TX_DIRECTION | gchan);
+ ch->ch_start_tx = 0;
+
+ if (ch->state == DOWN)
+ return 0;
+ ch->state = DOWN;
+
+ pi->regram->thp[gchan] = 0;
+ pi->regram->tmp[gchan] = 0;
+ pi->regram->rhp[gchan] = 0;
+ pi->regram->rmp[gchan] = 0;
+ FLUSH_MEM_WRITE();
+ for (i = 0; i < ch->txd_num; i++)
+ if (ch->mdt[i].mem_token)
+ OS_mem_token_free(ch->mdt[i].mem_token);
+
+ for (i = 0; i < ch->rxd_num; i++)
+ if (ch->mdr[i].mem_token)
+ OS_mem_token_free(ch->mdr[i].mem_token);
+
+ kfree(ch->mdr);
+ ch->mdr = NULL;
+ ch->rxd_num = 0;
+ kfree(ch->mdt);
+ ch->mdt = NULL;
+ ch->txd_num = 0;
+
+ musycc_update_timeslots(pi);
+ c4_fifo_free(pi, ch->gchan);
+
+ pi->openchans--;
return 0;
- ch->state = DOWN;
-
- pi->regram->thp[gchan] = 0;
- pi->regram->tmp[gchan] = 0;
- pi->regram->rhp[gchan] = 0;
- pi->regram->rmp[gchan] = 0;
- FLUSH_MEM_WRITE();
- for (i = 0; i < ch->txd_num; i++)
- if (ch->mdt[i].mem_token)
- OS_mem_token_free(ch->mdt[i].mem_token);
-
- for (i = 0; i < ch->rxd_num; i++)
- if (ch->mdr[i].mem_token)
- OS_mem_token_free(ch->mdr[i].mem_token);
-
- kfree(ch->mdr);
- ch->mdr = NULL;
- ch->rxd_num = 0;
- kfree(ch->mdt);
- ch->mdt = NULL;
- ch->txd_num = 0;
-
- musycc_update_timeslots(pi);
- c4_fifo_free(pi, ch->gchan);
-
- pi->openchans--;
- return 0;
}
#endif
int
musycc_del_chan(ci_t *ci, int channum)
{
- mch_t *ch;
-
- if ((channum < 0) || (channum >= (MUSYCC_NPORTS * MUSYCC_NCHANS))) /* sanity chk param */
- return ECHRNG;
- ch = sd_find_chan(ci, channum);
- if (!ch)
- return ENOENT;
- if (ch->state == UP)
- musycc_chan_down(ci, channum);
- ch->state = UNASSIGNED;
- return 0;
+ mch_t *ch;
+
+ if ((channum < 0) || (channum >= (MUSYCC_NPORTS * MUSYCC_NCHANS))) /* sanity chk param */
+ return ECHRNG;
+ ch = sd_find_chan(ci, channum);
+ if (!ch)
+ return ENOENT;
+ if (ch->state == UP)
+ musycc_chan_down(ci, channum);
+ ch->state = UNASSIGNED;
+ return 0;
}
int
musycc_del_chan_stats(ci_t *ci, int channum)
{
- mch_t *ch;
+ mch_t *ch;
- if (channum < 0 || channum >= (MUSYCC_NPORTS * MUSYCC_NCHANS)) /* sanity chk param */
- return ECHRNG;
- ch = sd_find_chan(ci, channum);
- if (!ch)
- return ENOENT;
+ if (channum < 0 || channum >= (MUSYCC_NPORTS * MUSYCC_NCHANS)) /* sanity chk param */
+ return ECHRNG;
+ ch = sd_find_chan(ci, channum);
+ if (!ch)
+ return ENOENT;
- memset(&ch->s, 0, sizeof(struct sbecom_chan_stats));
- return 0;
+ memset(&ch->s, 0, sizeof(struct sbecom_chan_stats));
+ return 0;
}
#endif
int
musycc_start_xmit(ci_t *ci, int channum, void *mem_token)
{
- mch_t *ch;
- struct mdesc *md;
- void *m2;
+ mch_t *ch;
+ struct mdesc *md;
+ void *m2;
#if 0
- unsigned long flags;
+ unsigned long flags;
#endif
- int txd_need_cnt;
- u_int32_t len;
+ int txd_need_cnt;
+ u_int32_t len;
- ch = sd_find_chan(ci, channum);
- if (!ch)
- return -ENOENT;
+ ch = sd_find_chan(ci, channum);
+ if (!ch)
+ return -ENOENT;
- if (ci->state != C_RUNNING) /* full interrupt processing available */
- return -EINVAL;
- if (ch->state != UP)
- return -EINVAL;
+ if (ci->state != C_RUNNING) /* full interrupt processing available */
+ return -EINVAL;
+ if (ch->state != UP)
+ return -EINVAL;
- if (!(ch->status & TX_ENABLED))
- return -EROFS; /* how else to flag unwritable state ? */
+ if (!(ch->status & TX_ENABLED))
+ return -EROFS; /* how else to flag unwritable state ? */
-#ifdef RLD_TRANS_DEBUGx
- if (1 || cxt1e1_log_level >= LOG_MONITOR2)
+#ifdef RLD_TRANS_DEBUG
+ if (1 || cxt1e1_log_level >= LOG_MONITOR2)
#else
- if (cxt1e1_log_level >= LOG_MONITOR2)
-#endif
- {
- pr_info("++ start_xmt[%d]: state %x start %x full %d free %d required %d stopped %x\n",
- channum, ch->state, ch->ch_start_tx, ch->tx_full,
- ch->txd_free, ch->txd_required, sd_queue_stopped(ch->user));
- }
- /***********************************************/
- /** Determine total amount of data to be sent **/
- /***********************************************/
- m2 = mem_token;
- txd_need_cnt = 0;
- for (len = OS_mem_token_tlen(m2); len > 0;
- m2 = (void *) OS_mem_token_next(m2)) {
- if (!OS_mem_token_len(m2))
- continue;
- txd_need_cnt++;
- len -= OS_mem_token_len(m2);
- }
-
- if (txd_need_cnt == 0) {
if (cxt1e1_log_level >= LOG_MONITOR2)
- pr_info("%s channel %d: no TX data in User buffer\n", ci->devname, channum);
- OS_mem_token_free(mem_token);
- return 0; /* no data to send */
- }
- /*************************************************/
- /** Are there sufficient descriptors available? **/
- /*************************************************/
- if (txd_need_cnt > ch->txd_num) { /* never enough descriptors for this
- * large a buffer */
- if (cxt1e1_log_level >= LOG_DEBUG)
- pr_info("start_xmit: discarding buffer, insufficient descriptor cnt %d, need %d.\n",
- ch->txd_num, txd_need_cnt + 1);
- ch->s.tx_dropped++;
- OS_mem_token_free(mem_token);
- return 0;
- }
+#endif
+ {
+ pr_info("++ start_xmt[%d]: state %x start %x full %d free %d required %d stopped %x\n",
+ channum, ch->state, ch->ch_start_tx, ch->tx_full,
+ ch->txd_free, ch->txd_required, sd_queue_stopped(ch->user));
+ }
+ /***********************************************/
+ /** Determine total amount of data to be sent **/
+ /***********************************************/
+ m2 = mem_token;
+ txd_need_cnt = 0;
+ for (len = OS_mem_token_tlen(m2); len > 0;
+ m2 = (void *) OS_mem_token_next(m2)) {
+ if (!OS_mem_token_len(m2))
+ continue;
+ txd_need_cnt++;
+ len -= OS_mem_token_len(m2);
+ }
+
+ if (txd_need_cnt == 0) {
+ if (cxt1e1_log_level >= LOG_MONITOR2)
+ pr_info("%s channel %d: no TX data in User buffer\n", ci->devname, channum);
+ OS_mem_token_free(mem_token);
+ return 0; /* no data to send */
+ }
+ /*************************************************/
+ /** Are there sufficient descriptors available? **/
+ /*************************************************/
+ if (txd_need_cnt > ch->txd_num) { /* never enough descriptors for this
+ * large a buffer */
+ if (cxt1e1_log_level >= LOG_DEBUG)
+ pr_info("start_xmit: discarding buffer, insufficient descriptor cnt %d, need %d.\n",
+ ch->txd_num, txd_need_cnt + 1);
+ ch->s.tx_dropped++;
+ OS_mem_token_free(mem_token);
+ return 0;
+ }
#if 0
- spin_lock_irqsave(&ch->ch_txlock, flags);
+ spin_lock_irqsave(&ch->ch_txlock, flags);
#endif
- /************************************************************/
- /** flow control the line if not enough descriptors remain **/
- /************************************************************/
- if (txd_need_cnt > ch->txd_free) {
- if (cxt1e1_log_level >= LOG_MONITOR2)
- pr_info("start_xmit[%d]: EBUSY - need more descriptors, have %d of %d need %d\n",
- channum, ch->txd_free, ch->txd_num, txd_need_cnt);
- ch->tx_full = 1;
- ch->txd_required = txd_need_cnt;
- sd_disable_xmit(ch->user);
+ /************************************************************/
+ /** flow control the line if not enough descriptors remain **/
+ /************************************************************/
+ if (txd_need_cnt > ch->txd_free) {
+ if (cxt1e1_log_level >= LOG_MONITOR2)
+ pr_info("start_xmit[%d]: EBUSY - need more descriptors, have %d of %d need %d\n",
+ channum, ch->txd_free, ch->txd_num, txd_need_cnt);
+ ch->tx_full = 1;
+ ch->txd_required = txd_need_cnt;
+ sd_disable_xmit(ch->user);
#if 0
- spin_unlock_irqrestore(&ch->ch_txlock, flags);
+ spin_unlock_irqrestore(&ch->ch_txlock, flags);
#endif
- return -EBUSY; /* tell user to try again later */
- }
- /**************************************************/
- /** Put the user data into MUSYCC data buffer(s) **/
- /**************************************************/
- m2 = mem_token;
- md = ch->txd_usr_add; /* get current available descriptor */
+ return -EBUSY; /* tell user to try again later */
+ }
+ /**************************************************/
+ /** Put the user data into MUSYCC data buffer(s) **/
+ /**************************************************/
+ m2 = mem_token;
+ md = ch->txd_usr_add; /* get current available descriptor */
- for (len = OS_mem_token_tlen(m2); len > 0; m2 = OS_mem_token_next(m2)) {
- int u = OS_mem_token_len(m2);
+ for (len = OS_mem_token_tlen(m2); len > 0; m2 = OS_mem_token_next(m2)) {
+ int u = OS_mem_token_len(m2);
- if (!u)
- continue;
- len -= u;
+ if (!u)
+ continue;
+ len -= u;
- /*
- * Enable following chunks, yet wait to enable the FIRST chunk until
- * after ALL subsequent chunks are setup.
- */
- if (md != ch->txd_usr_add) /* not first chunk */
- u |= MUSYCC_TX_OWNED; /* transfer ownership from HOST to MUSYCC */
-
- if (len) /* not last chunk */
- u |= EOBIRQ_ENABLE;
- else if (ch->p.chan_mode == CFG_CH_PROTO_TRANS) {
- /*
- * Per MUSYCC Ref 6.4.9 for Transparent Mode, the host must
- * always clear EOMIRQ_ENABLE in every Transmit Buffer Descriptor
- * (IE. don't set herein).
- */
- u |= EOBIRQ_ENABLE;
- } else
- u |= EOMIRQ_ENABLE; /* EOM, last HDLC chunk */
-
-
- /* last chunk in hdlc mode */
- u |= (ch->p.idlecode << IDLE_CODE);
- if (ch->p.pad_fill_count) {
+ /*
+ * Enable following chunks, yet wait to enable the FIRST chunk until
+ * after ALL subsequent chunks are setup.
+ */
+ if (md != ch->txd_usr_add) /* not first chunk */
+ u |= MUSYCC_TX_OWNED; /* transfer ownership from HOST to MUSYCC */
+
+ if (len) /* not last chunk */
+ u |= EOBIRQ_ENABLE;
+ else if (ch->p.chan_mode == CFG_CH_PROTO_TRANS) {
+ /*
+ * Per MUSYCC Ref 6.4.9 for Transparent Mode, the host must
+ * always clear EOMIRQ_ENABLE in every Transmit Buffer Descriptor
+ * (IE. don't set herein).
+ */
+ u |= EOBIRQ_ENABLE;
+ } else
+ u |= EOMIRQ_ENABLE; /* EOM, last HDLC chunk */
+
+
+ /* last chunk in hdlc mode */
+ u |= (ch->p.idlecode << IDLE_CODE);
+ if (ch->p.pad_fill_count) {
#if 0
- /* NOOP NOTE: u_int8_t cannot be > 0xFF */
- /* sanitize pad_fill_count for maximums allowed by hardware */
- if (ch->p.pad_fill_count > EXTRA_FLAGS_MASK)
- ch->p.pad_fill_count = EXTRA_FLAGS_MASK;
+ /* NOOP NOTE: u_int8_t cannot be > 0xFF */
+ /* sanitize pad_fill_count for maximums allowed by hardware */
+ if (ch->p.pad_fill_count > EXTRA_FLAGS_MASK)
+ ch->p.pad_fill_count = EXTRA_FLAGS_MASK;
#endif
- u |= (PADFILL_ENABLE | (ch->p.pad_fill_count << EXTRA_FLAGS));
+ u |= (PADFILL_ENABLE | (ch->p.pad_fill_count << EXTRA_FLAGS));
+ }
+ md->mem_token = len ? NULL : mem_token; /* Fill in mds on last
+ * segment, others set ZERO
+ * so that entire token is
+ * removed ONLY when ALL
+ * segments have been
+ * transmitted. */
+
+ md->data = cpu_to_le32(OS_vtophys(OS_mem_token_data(m2)));
+ FLUSH_MEM_WRITE();
+ md->status = cpu_to_le32(u);
+ --ch->txd_free;
+ md = md->snext;
}
- md->mem_token = len ? NULL : mem_token; /* Fill in mds on last
- * segment, others set ZERO
- * so that entire token is
- * removed ONLY when ALL
- * segments have been
- * transmitted. */
-
- md->data = cpu_to_le32(OS_vtophys(OS_mem_token_data(m2)));
FLUSH_MEM_WRITE();
- md->status = cpu_to_le32(u);
- --ch->txd_free;
- md = md->snext;
- }
- FLUSH_MEM_WRITE();
-
-
- /*
- * Now transfer ownership of first chunk from HOST to MUSYCC in order to
- * fire-off this XMIT.
- */
- ch->txd_usr_add->status |= __constant_cpu_to_le32(MUSYCC_TX_OWNED);
- FLUSH_MEM_WRITE();
- ch->txd_usr_add = md;
-
- len = OS_mem_token_tlen(mem_token);
- atomic_add(len, &ch->tx_pending);
- atomic_add(len, &ci->tx_pending);
- ch->s.tx_packets++;
- ch->s.tx_bytes += len;
- /*
- * If an ONR was seen, then channel requires poking to restart
- * transmission.
- */
- if (ch->ch_start_tx)
- musycc_chan_restart(ch);
+
+
+ /*
+ * Now transfer ownership of first chunk from HOST to MUSYCC in order to
+ * fire-off this XMIT.
+ */
+ ch->txd_usr_add->status |= __constant_cpu_to_le32(MUSYCC_TX_OWNED);
+ FLUSH_MEM_WRITE();
+ ch->txd_usr_add = md;
+
+ len = OS_mem_token_tlen(mem_token);
+ atomic_add(len, &ch->tx_pending);
+ atomic_add(len, &ci->tx_pending);
+ ch->s.tx_packets++;
+ ch->s.tx_bytes += len;
+ /*
+ * If an ONR was seen, then channel requires poking to restart
+ * transmission.
+ */
+ if (ch->ch_start_tx)
+ musycc_chan_restart(ch);
#ifdef SBE_WAN256T3_ENABLE
- wan256t3_led(ci, LED_TX, LEDV_G);
+ wan256t3_led(ci, LED_TX, LEDV_G);
#endif
- return 0;
+ return 0;
}
projects / cascardo / linux.git / commitdiff