Lines Matching +full:cpm1 +full:- +full:tsa
1 // SPDX-License-Identifier: GPL-2.0
11 #include <linux/dma-mapping.h>
22 #include "tsa.h"
52 /* Tx time-slot assignment table pointer (16 bits) */
64 /* Rx time-slot assignment table pointer (16 bits) */
77 /* TSA entry (16bit entry in TSATRX and TSATTX) */
102 /* Zero-insertion state (32 bits) */
262 /* Retrieve info from the TSA related serial */ in qmc_chan_get_info()
263 ret = tsa_serial_get_info(chan->qmc->tsa_serial, &tsa_info); in qmc_chan_get_info()
267 info->mode = chan->mode; in qmc_chan_get_info()
268 info->rx_fs_rate = tsa_info.rx_fs_rate; in qmc_chan_get_info()
269 info->rx_bit_rate = tsa_info.rx_bit_rate; in qmc_chan_get_info()
270 info->nb_tx_ts = hweight64(chan->tx_ts_mask); in qmc_chan_get_info()
271 info->tx_fs_rate = tsa_info.tx_fs_rate; in qmc_chan_get_info()
272 info->tx_bit_rate = tsa_info.tx_bit_rate; in qmc_chan_get_info()
273 info->nb_rx_ts = hweight64(chan->rx_ts_mask); in qmc_chan_get_info()
281 if (param->mode != chan->mode) in qmc_chan_set_param()
282 return -EINVAL; in qmc_chan_set_param()
284 switch (param->mode) { in qmc_chan_set_param()
286 if ((param->hdlc.max_rx_buf_size % 4) || in qmc_chan_set_param()
287 (param->hdlc.max_rx_buf_size < 8)) in qmc_chan_set_param()
288 return -EINVAL; in qmc_chan_set_param()
290 qmc_write16(chan->qmc->scc_pram + QMC_GBL_MRBLR, in qmc_chan_set_param()
291 param->hdlc.max_rx_buf_size - 8); in qmc_chan_set_param()
292 qmc_write16(chan->s_param + QMC_SPE_MFLR, in qmc_chan_set_param()
293 param->hdlc.max_rx_frame_size); in qmc_chan_set_param()
294 if (param->hdlc.is_crc32) { in qmc_chan_set_param()
295 qmc_setbits16(chan->s_param + QMC_SPE_CHAMR, in qmc_chan_set_param()
298 qmc_clrbits16(chan->s_param + QMC_SPE_CHAMR, in qmc_chan_set_param()
304 qmc_write16(chan->s_param + QMC_SPE_TMRBLR, in qmc_chan_set_param()
305 param->transp.max_rx_buf_size); in qmc_chan_set_param()
309 return -EINVAL; in qmc_chan_set_param()
333 spin_lock_irqsave(&chan->tx_lock, flags); in qmc_chan_write_submit()
334 bd = chan->txbd_free; in qmc_chan_write_submit()
336 ctrl = qmc_read16(&bd->cbd_sc); in qmc_chan_write_submit()
339 ret = -EBUSY; in qmc_chan_write_submit()
343 qmc_write16(&bd->cbd_datlen, length); in qmc_chan_write_submit()
344 qmc_write32(&bd->cbd_bufaddr, addr); in qmc_chan_write_submit()
346 xfer_desc = &chan->tx_desc[bd - chan->txbds]; in qmc_chan_write_submit()
347 xfer_desc->tx_complete = complete; in qmc_chan_write_submit()
348 xfer_desc->context = context; in qmc_chan_write_submit()
353 qmc_write16(&bd->cbd_sc, ctrl); in qmc_chan_write_submit()
355 if (!chan->is_tx_stopped) in qmc_chan_write_submit()
356 qmc_setbits16(chan->s_param + QMC_SPE_CHAMR, QMC_SPE_CHAMR_POL); in qmc_chan_write_submit()
359 chan->txbd_free = chan->txbds; in qmc_chan_write_submit()
361 chan->txbd_free++; in qmc_chan_write_submit()
366 spin_unlock_irqrestore(&chan->tx_lock, flags); in qmc_chan_write_submit()
388 spin_lock_irqsave(&chan->tx_lock, flags); in qmc_chan_write_done()
389 bd = chan->txbd_done; in qmc_chan_write_done()
391 ctrl = qmc_read16(&bd->cbd_sc); in qmc_chan_write_done()
396 xfer_desc = &chan->tx_desc[bd - chan->txbds]; in qmc_chan_write_done()
397 complete = xfer_desc->tx_complete; in qmc_chan_write_done()
398 context = xfer_desc->context; in qmc_chan_write_done()
399 xfer_desc->tx_complete = NULL; in qmc_chan_write_done()
400 xfer_desc->context = NULL; in qmc_chan_write_done()
402 qmc_write16(&bd->cbd_sc, ctrl & ~QMC_BD_TX_UB); in qmc_chan_write_done()
405 chan->txbd_done = chan->txbds; in qmc_chan_write_done()
407 chan->txbd_done++; in qmc_chan_write_done()
410 spin_unlock_irqrestore(&chan->tx_lock, flags); in qmc_chan_write_done()
412 spin_lock_irqsave(&chan->tx_lock, flags); in qmc_chan_write_done()
415 bd = chan->txbd_done; in qmc_chan_write_done()
416 ctrl = qmc_read16(&bd->cbd_sc); in qmc_chan_write_done()
420 spin_unlock_irqrestore(&chan->tx_lock, flags); in qmc_chan_write_done()
440 spin_lock_irqsave(&chan->rx_lock, flags); in qmc_chan_read_submit()
441 bd = chan->rxbd_free; in qmc_chan_read_submit()
443 ctrl = qmc_read16(&bd->cbd_sc); in qmc_chan_read_submit()
446 ret = -EBUSY; in qmc_chan_read_submit()
450 qmc_write16(&bd->cbd_datlen, 0); /* data length is updated by the QMC */ in qmc_chan_read_submit()
451 qmc_write32(&bd->cbd_bufaddr, addr); in qmc_chan_read_submit()
453 xfer_desc = &chan->rx_desc[bd - chan->rxbds]; in qmc_chan_read_submit()
454 xfer_desc->rx_complete = complete; in qmc_chan_read_submit()
455 xfer_desc->context = context; in qmc_chan_read_submit()
460 qmc_write16(&bd->cbd_sc, ctrl); in qmc_chan_read_submit()
463 if (chan->is_rx_halted && !chan->is_rx_stopped) { in qmc_chan_read_submit()
465 if (chan->mode == QMC_TRANSPARENT) in qmc_chan_read_submit()
466 qmc_write32(chan->s_param + QMC_SPE_ZDSTATE, 0x18000080); in qmc_chan_read_submit()
468 qmc_write32(chan->s_param + QMC_SPE_ZDSTATE, 0x00000080); in qmc_chan_read_submit()
469 qmc_write32(chan->s_param + QMC_SPE_RSTATE, 0x31000000); in qmc_chan_read_submit()
470 chan->is_rx_halted = false; in qmc_chan_read_submit()
472 chan->rx_pending++; in qmc_chan_read_submit()
475 chan->rxbd_free = chan->rxbds; in qmc_chan_read_submit()
477 chan->rxbd_free++; in qmc_chan_read_submit()
481 spin_unlock_irqrestore(&chan->rx_lock, flags); in qmc_chan_read_submit()
504 spin_lock_irqsave(&chan->rx_lock, flags); in qmc_chan_read_done()
505 bd = chan->rxbd_done; in qmc_chan_read_done()
507 ctrl = qmc_read16(&bd->cbd_sc); in qmc_chan_read_done()
512 xfer_desc = &chan->rx_desc[bd - chan->rxbds]; in qmc_chan_read_done()
513 complete = xfer_desc->rx_complete; in qmc_chan_read_done()
514 context = xfer_desc->context; in qmc_chan_read_done()
515 xfer_desc->rx_complete = NULL; in qmc_chan_read_done()
516 xfer_desc->context = NULL; in qmc_chan_read_done()
518 datalen = qmc_read16(&bd->cbd_datlen); in qmc_chan_read_done()
519 qmc_write16(&bd->cbd_sc, ctrl & ~QMC_BD_RX_UB); in qmc_chan_read_done()
522 chan->rxbd_done = chan->rxbds; in qmc_chan_read_done()
524 chan->rxbd_done++; in qmc_chan_read_done()
526 chan->rx_pending--; in qmc_chan_read_done()
529 spin_unlock_irqrestore(&chan->rx_lock, flags); in qmc_chan_read_done()
531 spin_lock_irqsave(&chan->rx_lock, flags); in qmc_chan_read_done()
534 bd = chan->rxbd_done; in qmc_chan_read_done()
535 ctrl = qmc_read16(&bd->cbd_sc); in qmc_chan_read_done()
539 spin_unlock_irqrestore(&chan->rx_lock, flags); in qmc_chan_read_done()
544 return cpm_command(chan->id << 2, (qmc_opcode << 4) | 0x0E); in qmc_chan_command()
552 spin_lock_irqsave(&chan->rx_lock, flags); in qmc_chan_stop_rx()
557 dev_err(chan->qmc->dev, "chan %u: Send STOP RECEIVE failed (%d)\n", in qmc_chan_stop_rx()
558 chan->id, ret); in qmc_chan_stop_rx()
562 chan->is_rx_stopped = true; in qmc_chan_stop_rx()
565 spin_unlock_irqrestore(&chan->rx_lock, flags); in qmc_chan_stop_rx()
574 spin_lock_irqsave(&chan->tx_lock, flags); in qmc_chan_stop_tx()
579 dev_err(chan->qmc->dev, "chan %u: Send STOP TRANSMIT failed (%d)\n", in qmc_chan_stop_tx()
580 chan->id, ret); in qmc_chan_stop_tx()
584 chan->is_tx_stopped = true; in qmc_chan_stop_tx()
587 spin_unlock_irqrestore(&chan->tx_lock, flags); in qmc_chan_stop_tx()
615 spin_lock_irqsave(&chan->rx_lock, flags); in qmc_chan_start_rx()
618 if (chan->mode == QMC_TRANSPARENT) in qmc_chan_start_rx()
619 qmc_write32(chan->s_param + QMC_SPE_ZDSTATE, 0x18000080); in qmc_chan_start_rx()
621 qmc_write32(chan->s_param + QMC_SPE_ZDSTATE, 0x00000080); in qmc_chan_start_rx()
622 qmc_write32(chan->s_param + QMC_SPE_RSTATE, 0x31000000); in qmc_chan_start_rx()
623 chan->is_rx_halted = false; in qmc_chan_start_rx()
625 chan->is_rx_stopped = false; in qmc_chan_start_rx()
627 spin_unlock_irqrestore(&chan->rx_lock, flags); in qmc_chan_start_rx()
634 spin_lock_irqsave(&chan->tx_lock, flags); in qmc_chan_start_tx()
640 qmc_setbits16(chan->s_param + QMC_SPE_CHAMR, QMC_SPE_CHAMR_ENT); in qmc_chan_start_tx()
643 qmc_setbits16(chan->s_param + QMC_SPE_CHAMR, QMC_SPE_CHAMR_POL); in qmc_chan_start_tx()
645 chan->is_tx_stopped = false; in qmc_chan_start_tx()
647 spin_unlock_irqrestore(&chan->tx_lock, flags); in qmc_chan_start_tx()
669 spin_lock_irqsave(&chan->rx_lock, flags); in qmc_chan_reset_rx()
670 bd = chan->rxbds; in qmc_chan_reset_rx()
672 ctrl = qmc_read16(&bd->cbd_sc); in qmc_chan_reset_rx()
673 qmc_write16(&bd->cbd_sc, ctrl & ~(QMC_BD_RX_UB | QMC_BD_RX_E)); in qmc_chan_reset_rx()
675 xfer_desc = &chan->rx_desc[bd - chan->rxbds]; in qmc_chan_reset_rx()
676 xfer_desc->rx_complete = NULL; in qmc_chan_reset_rx()
677 xfer_desc->context = NULL; in qmc_chan_reset_rx()
682 chan->rxbd_free = chan->rxbds; in qmc_chan_reset_rx()
683 chan->rxbd_done = chan->rxbds; in qmc_chan_reset_rx()
684 qmc_write16(chan->s_param + QMC_SPE_RBPTR, in qmc_chan_reset_rx()
685 qmc_read16(chan->s_param + QMC_SPE_RBASE)); in qmc_chan_reset_rx()
687 chan->rx_pending = 0; in qmc_chan_reset_rx()
689 spin_unlock_irqrestore(&chan->rx_lock, flags); in qmc_chan_reset_rx()
699 spin_lock_irqsave(&chan->tx_lock, flags); in qmc_chan_reset_tx()
701 /* Disable transmitter. It will be re-enable on qmc_chan_start() */ in qmc_chan_reset_tx()
702 qmc_clrbits16(chan->s_param + QMC_SPE_CHAMR, QMC_SPE_CHAMR_ENT); in qmc_chan_reset_tx()
704 bd = chan->txbds; in qmc_chan_reset_tx()
706 ctrl = qmc_read16(&bd->cbd_sc); in qmc_chan_reset_tx()
707 qmc_write16(&bd->cbd_sc, ctrl & ~(QMC_BD_TX_UB | QMC_BD_TX_R)); in qmc_chan_reset_tx()
709 xfer_desc = &chan->tx_desc[bd - chan->txbds]; in qmc_chan_reset_tx()
710 xfer_desc->tx_complete = NULL; in qmc_chan_reset_tx()
711 xfer_desc->context = NULL; in qmc_chan_reset_tx()
716 chan->txbd_free = chan->txbds; in qmc_chan_reset_tx()
717 chan->txbd_done = chan->txbds; in qmc_chan_reset_tx()
718 qmc_write16(chan->s_param + QMC_SPE_TBPTR, in qmc_chan_reset_tx()
719 qmc_read16(chan->s_param + QMC_SPE_TBASE)); in qmc_chan_reset_tx()
722 qmc_write32(chan->s_param + QMC_SPE_TSTATE, 0x30000000); in qmc_chan_reset_tx()
723 qmc_write32(chan->s_param + QMC_SPE_ZISTATE, 0x00000100); in qmc_chan_reset_tx()
725 spin_unlock_irqrestore(&chan->tx_lock, flags); in qmc_chan_reset_tx()
751 /* Retrieve info from the TSA related serial */ in qmc_check_chans()
752 ret = tsa_serial_get_info(qmc->tsa_serial, &info); in qmc_check_chans()
757 dev_err(qmc->dev, "Number of TSA Tx/Rx TS assigned not supported\n"); in qmc_check_chans()
758 return -EINVAL; in qmc_check_chans()
767 dev_err(qmc->dev, "Number of TSA Tx/Rx TS assigned are not equal\n"); in qmc_check_chans()
768 return -EINVAL; in qmc_check_chans()
773 tx_ts_assigned_mask = info.nb_tx_ts == 64 ? U64_MAX : (((u64)1) << info.nb_tx_ts) - 1; in qmc_check_chans()
774 rx_ts_assigned_mask = info.nb_rx_ts == 64 ? U64_MAX : (((u64)1) << info.nb_rx_ts) - 1; in qmc_check_chans()
776 list_for_each_entry(chan, &qmc->chan_head, list) { in qmc_check_chans()
777 if (chan->tx_ts_mask > tx_ts_assigned_mask) { in qmc_check_chans()
778 dev_err(qmc->dev, "chan %u uses TSA unassigned Tx TS\n", chan->id); in qmc_check_chans()
779 return -EINVAL; in qmc_check_chans()
781 if (tx_ts_mask & chan->tx_ts_mask) { in qmc_check_chans()
782 dev_err(qmc->dev, "chan %u uses an already used Tx TS\n", chan->id); in qmc_check_chans()
783 return -EINVAL; in qmc_check_chans()
786 if (chan->rx_ts_mask > rx_ts_assigned_mask) { in qmc_check_chans()
787 dev_err(qmc->dev, "chan %u uses TSA unassigned Rx TS\n", chan->id); in qmc_check_chans()
788 return -EINVAL; in qmc_check_chans()
790 if (rx_ts_mask & chan->rx_ts_mask) { in qmc_check_chans()
791 dev_err(qmc->dev, "chan %u uses an already used Rx TS\n", chan->id); in qmc_check_chans()
792 return -EINVAL; in qmc_check_chans()
795 if (is_one_table && (chan->tx_ts_mask != chan->rx_ts_mask)) { in qmc_check_chans()
796 dev_err(qmc->dev, "chan %u uses different Rx and Tx TS\n", chan->id); in qmc_check_chans()
797 return -EINVAL; in qmc_check_chans()
800 tx_ts_mask |= chan->tx_ts_mask; in qmc_check_chans()
801 rx_ts_mask |= chan->rx_ts_mask; in qmc_check_chans()
812 list_for_each_entry(chan, &qmc->chan_head, list) in qmc_nb_chans()
830 dev_err(qmc->dev, "%pOF: failed to read reg\n", chan_np); in qmc_of_parse_chans()
835 dev_err(qmc->dev, "%pOF: Invalid chan_id\n", chan_np); in qmc_of_parse_chans()
837 return -EINVAL; in qmc_of_parse_chans()
840 chan = devm_kzalloc(qmc->dev, sizeof(*chan), GFP_KERNEL); in qmc_of_parse_chans()
843 return -ENOMEM; in qmc_of_parse_chans()
846 chan->id = chan_id; in qmc_of_parse_chans()
847 spin_lock_init(&chan->rx_lock); in qmc_of_parse_chans()
848 spin_lock_init(&chan->tx_lock); in qmc_of_parse_chans()
850 ret = of_property_read_u64(chan_np, "fsl,tx-ts-mask", &ts_mask); in qmc_of_parse_chans()
852 dev_err(qmc->dev, "%pOF: failed to read fsl,tx-ts-mask\n", in qmc_of_parse_chans()
857 chan->tx_ts_mask = ts_mask; in qmc_of_parse_chans()
859 ret = of_property_read_u64(chan_np, "fsl,rx-ts-mask", &ts_mask); in qmc_of_parse_chans()
861 dev_err(qmc->dev, "%pOF: failed to read fsl,rx-ts-mask\n", in qmc_of_parse_chans()
866 chan->rx_ts_mask = ts_mask; in qmc_of_parse_chans()
869 ret = of_property_read_string(chan_np, "fsl,operational-mode", &mode); in qmc_of_parse_chans()
870 if (ret && ret != -EINVAL) { in qmc_of_parse_chans()
871 dev_err(qmc->dev, "%pOF: failed to read fsl,operational-mode\n", in qmc_of_parse_chans()
877 chan->mode = QMC_TRANSPARENT; in qmc_of_parse_chans()
879 chan->mode = QMC_HDLC; in qmc_of_parse_chans()
881 dev_err(qmc->dev, "%pOF: Invalid fsl,operational-mode (%s)\n", in qmc_of_parse_chans()
884 return -EINVAL; in qmc_of_parse_chans()
887 chan->is_reverse_data = of_property_read_bool(chan_np, in qmc_of_parse_chans()
888 "fsl,reverse-data"); in qmc_of_parse_chans()
890 list_add_tail(&chan->list, &qmc->chan_head); in qmc_of_parse_chans()
891 qmc->chans[chan->id] = chan; in qmc_of_parse_chans()
906 * identical -> Used Rx related stuff to build the table in qmc_setup_tsa_64rxtx()
911 qmc_write16(qmc->scc_pram + QMC_GBL_TSATRX + (i * 2), 0x0000); in qmc_setup_tsa_64rxtx()
914 list_for_each_entry(chan, &qmc->chan_head, list) { in qmc_setup_tsa_64rxtx()
915 for (i = 0; i < info->nb_rx_ts; i++) { in qmc_setup_tsa_64rxtx()
916 if (!(chan->rx_ts_mask & (((u64)1) << i))) in qmc_setup_tsa_64rxtx()
920 QMC_TSA_CHANNEL(chan->id); in qmc_setup_tsa_64rxtx()
921 qmc_write16(qmc->scc_pram + QMC_GBL_TSATRX + (i * 2), val); in qmc_setup_tsa_64rxtx()
926 qmc_setbits16(qmc->scc_pram + QMC_GBL_TSATRX + ((info->nb_rx_ts - 1) * 2), in qmc_setup_tsa_64rxtx()
930 val = qmc->scc_pram_offset + QMC_GBL_TSATRX; in qmc_setup_tsa_64rxtx()
931 qmc_write16(qmc->scc_pram + QMC_GBL_RX_S_PTR, val); in qmc_setup_tsa_64rxtx()
932 qmc_write16(qmc->scc_pram + QMC_GBL_RXPTR, val); in qmc_setup_tsa_64rxtx()
933 qmc_write16(qmc->scc_pram + QMC_GBL_TX_S_PTR, val); in qmc_setup_tsa_64rxtx()
934 qmc_write16(qmc->scc_pram + QMC_GBL_TXPTR, val); in qmc_setup_tsa_64rxtx()
952 qmc_write16(qmc->scc_pram + QMC_GBL_TSATRX + (i * 2), 0x0000); in qmc_setup_tsa_32rx_32tx()
953 qmc_write16(qmc->scc_pram + QMC_GBL_TSATTX + (i * 2), 0x0000); in qmc_setup_tsa_32rx_32tx()
957 list_for_each_entry(chan, &qmc->chan_head, list) { in qmc_setup_tsa_32rx_32tx()
959 for (i = 0; i < info->nb_rx_ts; i++) { in qmc_setup_tsa_32rx_32tx()
960 if (!(chan->rx_ts_mask & (((u64)1) << i))) in qmc_setup_tsa_32rx_32tx()
964 QMC_TSA_CHANNEL(chan->id); in qmc_setup_tsa_32rx_32tx()
965 qmc_write16(qmc->scc_pram + QMC_GBL_TSATRX + (i * 2), val); in qmc_setup_tsa_32rx_32tx()
968 for (i = 0; i < info->nb_tx_ts; i++) { in qmc_setup_tsa_32rx_32tx()
969 if (!(chan->tx_ts_mask & (((u64)1) << i))) in qmc_setup_tsa_32rx_32tx()
973 QMC_TSA_CHANNEL(chan->id); in qmc_setup_tsa_32rx_32tx()
974 qmc_write16(qmc->scc_pram + QMC_GBL_TSATTX + (i * 2), val); in qmc_setup_tsa_32rx_32tx()
979 qmc_setbits16(qmc->scc_pram + QMC_GBL_TSATRX + ((info->nb_rx_ts - 1) * 2), in qmc_setup_tsa_32rx_32tx()
981 qmc_setbits16(qmc->scc_pram + QMC_GBL_TSATTX + ((info->nb_tx_ts - 1) * 2), in qmc_setup_tsa_32rx_32tx()
985 val = qmc->scc_pram_offset + QMC_GBL_TSATRX; in qmc_setup_tsa_32rx_32tx()
986 qmc_write16(qmc->scc_pram + QMC_GBL_RX_S_PTR, val); in qmc_setup_tsa_32rx_32tx()
987 qmc_write16(qmc->scc_pram + QMC_GBL_RXPTR, val); in qmc_setup_tsa_32rx_32tx()
990 val = qmc->scc_pram_offset + QMC_GBL_TSATTX; in qmc_setup_tsa_32rx_32tx()
991 qmc_write16(qmc->scc_pram + QMC_GBL_TX_S_PTR, val); in qmc_setup_tsa_32rx_32tx()
992 qmc_write16(qmc->scc_pram + QMC_GBL_TXPTR, val); in qmc_setup_tsa_32rx_32tx()
1002 /* Retrieve info from the TSA related serial */ in qmc_setup_tsa()
1003 ret = tsa_serial_get_info(qmc->tsa_serial, &info); in qmc_setup_tsa()
1023 /* Retrieve info from the TSA related serial */ in qmc_setup_chan_trnsync()
1024 ret = tsa_serial_get_info(chan->qmc->tsa_serial, &info); in qmc_setup_chan_trnsync()
1029 first_rx = chan->rx_ts_mask ? __ffs64(chan->rx_ts_mask) + 1 : 0; in qmc_setup_chan_trnsync()
1032 last_tx = fls64(chan->tx_ts_mask); in qmc_setup_chan_trnsync()
1040 qmc_write16(chan->s_param + QMC_SPE_TRNSYNC, trnsync); in qmc_setup_chan_trnsync()
1042 dev_dbg(qmc->dev, "chan %u: trnsync=0x%04x, rx %u/%u 0x%llx, tx %u/%u 0x%llx\n", in qmc_setup_chan_trnsync()
1043 chan->id, trnsync, in qmc_setup_chan_trnsync()
1044 first_rx, info.nb_rx_ts, chan->rx_ts_mask, in qmc_setup_chan_trnsync()
1045 last_tx, info.nb_tx_ts, chan->tx_ts_mask); in qmc_setup_chan_trnsync()
1057 chan->qmc = qmc; in qmc_setup_chan()
1060 chan->s_param = qmc->dpram + (chan->id * 64); in qmc_setup_chan()
1062 chan->txbds = qmc->bd_table + (chan->id * (QMC_NB_TXBDS + QMC_NB_RXBDS)); in qmc_setup_chan()
1063 chan->rxbds = qmc->bd_table + (chan->id * (QMC_NB_TXBDS + QMC_NB_RXBDS)) + QMC_NB_TXBDS; in qmc_setup_chan()
1065 chan->txbd_free = chan->txbds; in qmc_setup_chan()
1066 chan->txbd_done = chan->txbds; in qmc_setup_chan()
1067 chan->rxbd_free = chan->rxbds; in qmc_setup_chan()
1068 chan->rxbd_done = chan->rxbds; in qmc_setup_chan()
1071 val = chan->id * (QMC_NB_TXBDS + QMC_NB_RXBDS) * sizeof(cbd_t); in qmc_setup_chan()
1072 qmc_write16(chan->s_param + QMC_SPE_TBASE, val); in qmc_setup_chan()
1073 qmc_write16(chan->s_param + QMC_SPE_TBPTR, val); in qmc_setup_chan()
1076 val = ((chan->id * (QMC_NB_TXBDS + QMC_NB_RXBDS)) + QMC_NB_TXBDS) * sizeof(cbd_t); in qmc_setup_chan()
1077 qmc_write16(chan->s_param + QMC_SPE_RBASE, val); in qmc_setup_chan()
1078 qmc_write16(chan->s_param + QMC_SPE_RBPTR, val); in qmc_setup_chan()
1079 qmc_write32(chan->s_param + QMC_SPE_TSTATE, 0x30000000); in qmc_setup_chan()
1080 qmc_write32(chan->s_param + QMC_SPE_RSTATE, 0x31000000); in qmc_setup_chan()
1081 qmc_write32(chan->s_param + QMC_SPE_ZISTATE, 0x00000100); in qmc_setup_chan()
1082 if (chan->mode == QMC_TRANSPARENT) { in qmc_setup_chan()
1083 qmc_write32(chan->s_param + QMC_SPE_ZDSTATE, 0x18000080); in qmc_setup_chan()
1084 qmc_write16(chan->s_param + QMC_SPE_TMRBLR, 60); in qmc_setup_chan()
1086 if (chan->is_reverse_data) in qmc_setup_chan()
1088 qmc_write16(chan->s_param + QMC_SPE_CHAMR, val); in qmc_setup_chan()
1093 qmc_write32(chan->s_param + QMC_SPE_ZDSTATE, 0x00000080); in qmc_setup_chan()
1094 qmc_write16(chan->s_param + QMC_SPE_MFLR, 60); in qmc_setup_chan()
1095 qmc_write16(chan->s_param + QMC_SPE_CHAMR, in qmc_setup_chan()
1100 qmc_write16(chan->s_param + QMC_SPE_INTMSK, 0x0000); in qmc_setup_chan()
1106 bd = chan->rxbds + i; in qmc_setup_chan()
1107 qmc_write16(&bd->cbd_sc, val); in qmc_setup_chan()
1109 bd = chan->rxbds + QMC_NB_RXBDS - 1; in qmc_setup_chan()
1110 qmc_write16(&bd->cbd_sc, val | QMC_BD_RX_W); in qmc_setup_chan()
1115 if (chan->mode == QMC_HDLC) in qmc_setup_chan()
1118 bd = chan->txbds + i; in qmc_setup_chan()
1119 qmc_write16(&bd->cbd_sc, val); in qmc_setup_chan()
1121 bd = chan->txbds + QMC_NB_TXBDS - 1; in qmc_setup_chan()
1122 qmc_write16(&bd->cbd_sc, val | QMC_BD_TX_W); in qmc_setup_chan()
1132 list_for_each_entry(chan, &qmc->chan_head, list) { in qmc_setup_chans()
1146 list_for_each_entry(chan, &qmc->chan_head, list) { in qmc_finalize_chans()
1148 if (chan->mode == QMC_HDLC) { in qmc_finalize_chans()
1149 qmc_write16(chan->s_param + QMC_SPE_INTMSK, in qmc_finalize_chans()
1154 qmc_write16(chan->s_param + QMC_SPE_INTMSK, in qmc_finalize_chans()
1174 for (i = 0; i < (qmc->int_size / sizeof(u16)); i++) in qmc_setup_ints()
1175 qmc_write16(qmc->int_table + i, 0x0000); in qmc_setup_ints()
1178 if (qmc->int_size >= sizeof(u16)) { in qmc_setup_ints()
1179 last = qmc->int_table + (qmc->int_size / sizeof(u16)) - 1; in qmc_setup_ints()
1193 int_entry = qmc_read16(qmc->int_curr); in qmc_irq_gint()
1196 qmc_write16(qmc->int_curr, int_entry & QMC_INT_W); in qmc_irq_gint()
1199 chan = qmc->chans[chan_id]; in qmc_irq_gint()
1201 dev_err(qmc->dev, "interrupt on invalid chan %u\n", chan_id); in qmc_irq_gint()
1209 dev_info(qmc->dev, "intr chan %u, 0x%04x (UN)\n", chan_id, in qmc_irq_gint()
1211 chan->nb_tx_underrun++; in qmc_irq_gint()
1215 dev_info(qmc->dev, "intr chan %u, 0x%04x (BSY)\n", chan_id, in qmc_irq_gint()
1217 chan->nb_rx_busy++; in qmc_irq_gint()
1219 spin_lock_irqsave(&chan->rx_lock, flags); in qmc_irq_gint()
1220 if (chan->rx_pending && !chan->is_rx_stopped) { in qmc_irq_gint()
1221 if (chan->mode == QMC_TRANSPARENT) in qmc_irq_gint()
1222 qmc_write32(chan->s_param + QMC_SPE_ZDSTATE, 0x18000080); in qmc_irq_gint()
1224 qmc_write32(chan->s_param + QMC_SPE_ZDSTATE, 0x00000080); in qmc_irq_gint()
1225 qmc_write32(chan->s_param + QMC_SPE_RSTATE, 0x31000000); in qmc_irq_gint()
1226 chan->is_rx_halted = false; in qmc_irq_gint()
1228 chan->is_rx_halted = true; in qmc_irq_gint()
1230 spin_unlock_irqrestore(&chan->rx_lock, flags); in qmc_irq_gint()
1238 qmc->int_curr = qmc->int_table; in qmc_irq_gint()
1240 qmc->int_curr++; in qmc_irq_gint()
1241 int_entry = qmc_read16(qmc->int_curr); in qmc_irq_gint()
1250 scce = qmc_read16(qmc->scc_regs + SCC_SCCE); in qmc_irq_handler()
1251 qmc_write16(qmc->scc_regs + SCC_SCCE, scce); in qmc_irq_handler()
1254 dev_info(qmc->dev, "IRQ queue overflow\n"); in qmc_irq_handler()
1257 dev_err(qmc->dev, "Global transmitter underrun\n"); in qmc_irq_handler()
1260 dev_err(qmc->dev, "Global receiver overrun\n"); in qmc_irq_handler()
1271 struct device_node *np = pdev->dev.of_node; in qmc_probe()
1278 qmc = devm_kzalloc(&pdev->dev, sizeof(*qmc), GFP_KERNEL); in qmc_probe()
1280 return -ENOMEM; in qmc_probe()
1282 qmc->dev = &pdev->dev; in qmc_probe()
1283 INIT_LIST_HEAD(&qmc->chan_head); in qmc_probe()
1285 qmc->scc_regs = devm_platform_ioremap_resource_byname(pdev, "scc_regs"); in qmc_probe()
1286 if (IS_ERR(qmc->scc_regs)) in qmc_probe()
1287 return PTR_ERR(qmc->scc_regs); in qmc_probe()
1292 return -EINVAL; in qmc_probe()
1293 qmc->scc_pram_offset = res->start - get_immrbase(); in qmc_probe()
1294 qmc->scc_pram = devm_ioremap_resource(qmc->dev, res); in qmc_probe()
1295 if (IS_ERR(qmc->scc_pram)) in qmc_probe()
1296 return PTR_ERR(qmc->scc_pram); in qmc_probe()
1298 qmc->dpram = devm_platform_ioremap_resource_byname(pdev, "dpram"); in qmc_probe()
1299 if (IS_ERR(qmc->dpram)) in qmc_probe()
1300 return PTR_ERR(qmc->dpram); in qmc_probe()
1302 qmc->tsa_serial = devm_tsa_serial_get_byphandle(qmc->dev, np, "fsl,tsa-serial"); in qmc_probe()
1303 if (IS_ERR(qmc->tsa_serial)) { in qmc_probe()
1304 return dev_err_probe(qmc->dev, PTR_ERR(qmc->tsa_serial), in qmc_probe()
1305 "Failed to get TSA serial\n"); in qmc_probe()
1308 /* Connect the serial (SCC) to TSA */ in qmc_probe()
1309 ret = tsa_serial_connect(qmc->tsa_serial); in qmc_probe()
1311 dev_err(qmc->dev, "Failed to connect TSA serial\n"); in qmc_probe()
1323 qmc_write32(qmc->scc_regs + SCC_GSMRH, in qmc_probe()
1327 qmc_write32(qmc->scc_regs + SCC_GSMRL, SCC_GSMRL_MODE_QMC); in qmc_probe()
1333 qmc->bd_size = (nb_chans * (QMC_NB_TXBDS + QMC_NB_RXBDS)) * sizeof(cbd_t); in qmc_probe()
1334 qmc->bd_table = dmam_alloc_coherent(qmc->dev, qmc->bd_size, in qmc_probe()
1335 &qmc->bd_dma_addr, GFP_KERNEL); in qmc_probe()
1336 if (!qmc->bd_table) { in qmc_probe()
1337 dev_err(qmc->dev, "Failed to allocate bd table\n"); in qmc_probe()
1338 ret = -ENOMEM; in qmc_probe()
1341 memset(qmc->bd_table, 0, qmc->bd_size); in qmc_probe()
1343 qmc_write32(qmc->scc_pram + QMC_GBL_MCBASE, qmc->bd_dma_addr); in qmc_probe()
1346 qmc->int_size = QMC_NB_INTS * sizeof(u16); in qmc_probe()
1347 qmc->int_table = dmam_alloc_coherent(qmc->dev, qmc->int_size, in qmc_probe()
1348 &qmc->int_dma_addr, GFP_KERNEL); in qmc_probe()
1349 if (!qmc->int_table) { in qmc_probe()
1350 dev_err(qmc->dev, "Failed to allocate interrupt table\n"); in qmc_probe()
1351 ret = -ENOMEM; in qmc_probe()
1354 memset(qmc->int_table, 0, qmc->int_size); in qmc_probe()
1356 qmc->int_curr = qmc->int_table; in qmc_probe()
1357 qmc_write32(qmc->scc_pram + QMC_GBL_INTBASE, qmc->int_dma_addr); in qmc_probe()
1358 qmc_write32(qmc->scc_pram + QMC_GBL_INTPTR, qmc->int_dma_addr); in qmc_probe()
1361 qmc_write16(qmc->scc_pram + QMC_GBL_MRBLR, HDLC_MAX_MRU + 4); in qmc_probe()
1363 qmc_write16(qmc->scc_pram + QMC_GBL_GRFTHR, 1); in qmc_probe()
1364 qmc_write16(qmc->scc_pram + QMC_GBL_GRFCNT, 1); in qmc_probe()
1366 qmc_write32(qmc->scc_pram + QMC_GBL_C_MASK32, 0xDEBB20E3); in qmc_probe()
1367 qmc_write16(qmc->scc_pram + QMC_GBL_C_MASK16, 0xF0B8); in qmc_probe()
1373 qmc_write16(qmc->scc_pram + QMC_GBL_QMCSTATE, 0x8000); in qmc_probe()
1385 qmc_write16(qmc->scc_regs + SCC_SCCM, 0x0000); in qmc_probe()
1386 qmc_write16(qmc->scc_regs + SCC_SCCE, 0x000F); in qmc_probe()
1390 ret = devm_request_irq(qmc->dev, irq, qmc_irq_handler, 0, "qmc", qmc); in qmc_probe()
1395 qmc_write16(qmc->scc_regs + SCC_SCCM, in qmc_probe()
1403 qmc_setbits32(qmc->scc_regs + SCC_GSMRL, SCC_GSMRL_ENR | SCC_GSMRL_ENT); in qmc_probe()
1410 qmc_write16(qmc->scc_regs + SCC_SCCM, 0); in qmc_probe()
1413 tsa_serial_disconnect(qmc->tsa_serial); in qmc_probe()
1422 qmc_setbits32(qmc->scc_regs + SCC_GSMRL, 0); in qmc_remove()
1425 qmc_write16(qmc->scc_regs + SCC_SCCM, 0); in qmc_remove()
1427 /* Disconnect the serial from TSA */ in qmc_remove()
1428 tsa_serial_disconnect(qmc->tsa_serial); in qmc_remove()
1434 { .compatible = "fsl,cpm1-scc-qmc" },
1441 .name = "fsl-qmc",
1464 return ERR_PTR(-EINVAL); in qmc_chan_get_byphandle()
1470 return ERR_PTR(-ENODEV); in qmc_chan_get_byphandle()
1475 return ERR_PTR(-EPROBE_DEFER); in qmc_chan_get_byphandle()
1480 return ERR_PTR(-EINVAL); in qmc_chan_get_byphandle()
1483 if (out_args.args[0] >= ARRAY_SIZE(qmc->chans)) { in qmc_chan_get_byphandle()
1485 return ERR_PTR(-EINVAL); in qmc_chan_get_byphandle()
1488 qmc_chan = qmc->chans[out_args.args[0]]; in qmc_chan_get_byphandle()
1491 return ERR_PTR(-ENOENT); in qmc_chan_get_byphandle()
1500 put_device(chan->qmc->dev); in qmc_chan_put()
1520 return ERR_PTR(-ENOMEM); in devm_qmc_chan_get_byphandle()