Lines Matching full:qca
71 start_spi_intr_handling(struct qcaspi *qca, u16 *intr_cause) in start_spi_intr_handling() argument
75 qcaspi_write_register(qca, SPI_REG_INTR_ENABLE, 0, wr_verify); in start_spi_intr_handling()
76 qcaspi_read_register(qca, SPI_REG_INTR_CAUSE, intr_cause); in start_spi_intr_handling()
77 netdev_dbg(qca->net_dev, "interrupts: 0x%04x\n", *intr_cause); in start_spi_intr_handling()
81 end_spi_intr_handling(struct qcaspi *qca, u16 intr_cause) in end_spi_intr_handling() argument
88 qcaspi_write_register(qca, SPI_REG_INTR_CAUSE, intr_cause, 0); in end_spi_intr_handling()
89 qcaspi_write_register(qca, SPI_REG_INTR_ENABLE, intr_enable, wr_verify); in end_spi_intr_handling()
90 netdev_dbg(qca->net_dev, "acking int: 0x%04x\n", intr_cause); in end_spi_intr_handling()
94 qcaspi_write_burst(struct qcaspi *qca, u8 *src, u32 len) in qcaspi_write_burst() argument
112 ret = spi_sync(qca->spi_dev, &msg); in qcaspi_write_burst()
115 qcaspi_spi_error(qca); in qcaspi_write_burst()
123 qcaspi_write_legacy(struct qcaspi *qca, u8 *src, u32 len) in qcaspi_write_legacy() argument
136 ret = spi_sync(qca->spi_dev, &msg); in qcaspi_write_legacy()
139 qcaspi_spi_error(qca); in qcaspi_write_legacy()
147 qcaspi_read_burst(struct qcaspi *qca, u8 *dst, u32 len) in qcaspi_read_burst() argument
165 ret = spi_sync(qca->spi_dev, &msg); in qcaspi_read_burst()
168 qcaspi_spi_error(qca); in qcaspi_read_burst()
176 qcaspi_read_legacy(struct qcaspi *qca, u8 *dst, u32 len) in qcaspi_read_legacy() argument
189 ret = spi_sync(qca->spi_dev, &msg); in qcaspi_read_legacy()
192 qcaspi_spi_error(qca); in qcaspi_read_legacy()
200 qcaspi_tx_cmd(struct qcaspi *qca, u16 cmd) in qcaspi_tx_cmd() argument
216 ret = spi_sync(qca->spi_dev, &msg); in qcaspi_tx_cmd()
222 qcaspi_spi_error(qca); in qcaspi_tx_cmd()
228 qcaspi_tx_frame(struct qcaspi *qca, struct sk_buff *skb) in qcaspi_tx_frame() argument
237 qcaspi_write_register(qca, SPI_REG_BFR_SIZE, len, wr_verify); in qcaspi_tx_frame()
238 if (qca->legacy_mode) in qcaspi_tx_frame()
239 qcaspi_tx_cmd(qca, QCA7K_SPI_WRITE | QCA7K_SPI_EXTERNAL); in qcaspi_tx_frame()
244 if (count > qca->burst_len) in qcaspi_tx_frame()
245 count = qca->burst_len; in qcaspi_tx_frame()
247 if (qca->legacy_mode) { in qcaspi_tx_frame()
248 written = qcaspi_write_legacy(qca, in qcaspi_tx_frame()
252 written = qcaspi_write_burst(qca, in qcaspi_tx_frame()
268 qcaspi_transmit(struct qcaspi *qca) in qcaspi_transmit() argument
270 struct net_device_stats *n_stats = &qca->net_dev->stats; in qcaspi_transmit()
276 if (qca->txr.skb[qca->txr.head] == NULL) in qcaspi_transmit()
279 qcaspi_read_register(qca, SPI_REG_WRBUF_SPC_AVA, &available); in qcaspi_transmit()
285 qca->stats.buf_avail_err++; in qcaspi_transmit()
289 while (qca->txr.skb[qca->txr.head]) { in qcaspi_transmit()
290 pkt_len = qca->txr.skb[qca->txr.head]->len + QCASPI_HW_PKT_LEN; in qcaspi_transmit()
294 qca->stats.write_buf_miss++; in qcaspi_transmit()
298 if (qcaspi_tx_frame(qca, qca->txr.skb[qca->txr.head]) == -1) { in qcaspi_transmit()
299 qca->stats.write_err++; in qcaspi_transmit()
305 n_stats->tx_bytes += qca->txr.skb[qca->txr.head]->len; in qcaspi_transmit()
312 netif_tx_lock_bh(qca->net_dev); in qcaspi_transmit()
313 dev_kfree_skb(qca->txr.skb[qca->txr.head]); in qcaspi_transmit()
314 qca->txr.skb[qca->txr.head] = NULL; in qcaspi_transmit()
315 qca->txr.size -= pkt_len; in qcaspi_transmit()
316 new_head = qca->txr.head + 1; in qcaspi_transmit()
317 if (new_head >= qca->txr.count) in qcaspi_transmit()
319 qca->txr.head = new_head; in qcaspi_transmit()
320 if (netif_queue_stopped(qca->net_dev)) in qcaspi_transmit()
321 netif_wake_queue(qca->net_dev); in qcaspi_transmit()
322 netif_tx_unlock_bh(qca->net_dev); in qcaspi_transmit()
329 qcaspi_receive(struct qcaspi *qca) in qcaspi_receive() argument
331 struct net_device *net_dev = qca->net_dev; in qcaspi_receive()
338 if (!qca->rx_skb) { in qcaspi_receive()
339 qca->rx_skb = netdev_alloc_skb_ip_align(net_dev, in qcaspi_receive()
342 if (!qca->rx_skb) { in qcaspi_receive()
344 qca->stats.out_of_mem++; in qcaspi_receive()
350 qcaspi_read_register(qca, SPI_REG_RDBUF_BYTE_AVA, &available); in qcaspi_receive()
359 qca->stats.buf_avail_err++; in qcaspi_receive()
366 qcaspi_write_register(qca, SPI_REG_BFR_SIZE, available, wr_verify); in qcaspi_receive()
368 if (qca->legacy_mode) in qcaspi_receive()
369 qcaspi_tx_cmd(qca, QCA7K_SPI_READ | QCA7K_SPI_EXTERNAL); in qcaspi_receive()
374 if (count > qca->burst_len) in qcaspi_receive()
375 count = qca->burst_len; in qcaspi_receive()
377 if (qca->legacy_mode) { in qcaspi_receive()
378 bytes_read = qcaspi_read_legacy(qca, qca->rx_buffer, in qcaspi_receive()
381 bytes_read = qcaspi_read_burst(qca, qca->rx_buffer, in qcaspi_receive()
391 qca->stats.read_err++; in qcaspi_receive()
395 cp = qca->rx_buffer; in qcaspi_receive()
397 while ((bytes_read--) && (qca->rx_skb)) { in qcaspi_receive()
400 retcode = qcafrm_fsm_decode(&qca->frm_handle, in qcaspi_receive()
401 qca->rx_skb->data, in qcaspi_receive()
402 skb_tailroom(qca->rx_skb), in qcaspi_receive()
420 qca->rx_skb->dev = qca->net_dev; in qcaspi_receive()
423 skb_put(qca->rx_skb, retcode); in qcaspi_receive()
424 qca->rx_skb->protocol = eth_type_trans( in qcaspi_receive()
425 qca->rx_skb, qca->rx_skb->dev); in qcaspi_receive()
426 skb_checksum_none_assert(qca->rx_skb); in qcaspi_receive()
427 netif_rx(qca->rx_skb); in qcaspi_receive()
428 qca->rx_skb = netdev_alloc_skb_ip_align(net_dev, in qcaspi_receive()
430 if (!qca->rx_skb) { in qcaspi_receive()
433 qca->stats.out_of_mem++; in qcaspi_receive()
444 * that fit into the internal QCA buffer.
461 qcaspi_flush_tx_ring(struct qcaspi *qca) in qcaspi_flush_tx_ring() argument
468 netif_tx_lock_bh(qca->net_dev); in qcaspi_flush_tx_ring()
470 if (qca->txr.skb[i]) { in qcaspi_flush_tx_ring()
471 dev_kfree_skb(qca->txr.skb[i]); in qcaspi_flush_tx_ring()
472 qca->txr.skb[i] = NULL; in qcaspi_flush_tx_ring()
473 qca->net_dev->stats.tx_dropped++; in qcaspi_flush_tx_ring()
476 qca->txr.tail = 0; in qcaspi_flush_tx_ring()
477 qca->txr.head = 0; in qcaspi_flush_tx_ring()
478 qca->txr.size = 0; in qcaspi_flush_tx_ring()
479 netif_tx_unlock_bh(qca->net_dev); in qcaspi_flush_tx_ring()
483 qcaspi_qca7k_sync(struct qcaspi *qca, int event) in qcaspi_qca7k_sync() argument
493 qcaspi_read_register(qca, SPI_REG_SIGNATURE, &signature); in qcaspi_qca7k_sync()
494 qcaspi_read_register(qca, SPI_REG_SIGNATURE, &signature); in qcaspi_qca7k_sync()
496 if (qca->sync == QCASPI_SYNC_READY) in qcaspi_qca7k_sync()
497 qca->stats.bad_signature++; in qcaspi_qca7k_sync()
499 set_bit(SPI_RESET, &qca->flags); in qcaspi_qca7k_sync()
500 netdev_dbg(qca->net_dev, "sync: got CPU on, but signature was invalid, restart\n"); in qcaspi_qca7k_sync()
504 qcaspi_read_register(qca, SPI_REG_WRBUF_SPC_AVA, in qcaspi_qca7k_sync()
507 netdev_dbg(qca->net_dev, "sync: got CPU on, but wrbuf not empty. reset!\n"); in qcaspi_qca7k_sync()
508 qca->sync = QCASPI_SYNC_UNKNOWN; in qcaspi_qca7k_sync()
509 qca->stats.buf_avail_err++; in qcaspi_qca7k_sync()
511 netdev_dbg(qca->net_dev, "sync: got CPU on, now in sync\n"); in qcaspi_qca7k_sync()
512 qca->sync = QCASPI_SYNC_READY; in qcaspi_qca7k_sync()
518 if (test_and_clear_bit(SPI_RESET, &qca->flags)) in qcaspi_qca7k_sync()
519 qca->sync = QCASPI_SYNC_UNKNOWN; in qcaspi_qca7k_sync()
522 switch (qca->sync) { in qcaspi_qca7k_sync()
525 qcaspi_read_register(qca, SPI_REG_SIGNATURE, &signature); in qcaspi_qca7k_sync()
527 qcaspi_read_register(qca, SPI_REG_SIGNATURE, &signature); in qcaspi_qca7k_sync()
530 set_bit(SPI_RESET, &qca->flags); in qcaspi_qca7k_sync()
531 qca->stats.bad_signature++; in qcaspi_qca7k_sync()
532 netdev_dbg(qca->net_dev, "sync: bad signature, restart\n"); in qcaspi_qca7k_sync()
539 qcaspi_read_register(qca, SPI_REG_SIGNATURE, &signature); in qcaspi_qca7k_sync()
541 netdev_dbg(qca->net_dev, "sync: could not read signature to reset device, retry.\n"); in qcaspi_qca7k_sync()
546 netdev_dbg(qca->net_dev, "sync: resetting device.\n"); in qcaspi_qca7k_sync()
547 qcaspi_read_register(qca, SPI_REG_SPI_CONFIG, &spi_config); in qcaspi_qca7k_sync()
549 qcaspi_write_register(qca, SPI_REG_SPI_CONFIG, spi_config, 0); in qcaspi_qca7k_sync()
551 qca->sync = QCASPI_SYNC_RESET; in qcaspi_qca7k_sync()
552 qca->stats.trig_reset++; in qcaspi_qca7k_sync()
553 qca->reset_count = 0; in qcaspi_qca7k_sync()
556 qca->reset_count++; in qcaspi_qca7k_sync()
557 netdev_dbg(qca->net_dev, "sync: waiting for CPU on, count %u.\n", in qcaspi_qca7k_sync()
558 qca->reset_count); in qcaspi_qca7k_sync()
559 if (qca->reset_count >= QCASPI_RESET_TIMEOUT) { in qcaspi_qca7k_sync()
561 set_bit(SPI_RESET, &qca->flags); in qcaspi_qca7k_sync()
562 qca->stats.reset_timeout++; in qcaspi_qca7k_sync()
563 netdev_dbg(qca->net_dev, "sync: reset timeout, restarting process.\n"); in qcaspi_qca7k_sync()
572 struct qcaspi *qca = data; in qcaspi_spi_thread() local
575 netdev_info(qca->net_dev, "SPI thread created\n"); in qcaspi_spi_thread()
579 netif_tx_disable(qca->net_dev); in qcaspi_spi_thread()
580 netif_carrier_off(qca->net_dev); in qcaspi_spi_thread()
581 qcaspi_flush_tx_ring(qca); in qcaspi_spi_thread()
583 if (qca->sync == QCASPI_SYNC_READY) { in qcaspi_spi_thread()
584 netif_carrier_on(qca->net_dev); in qcaspi_spi_thread()
585 netif_wake_queue(qca->net_dev); in qcaspi_spi_thread()
590 if (!qca->flags && in qcaspi_spi_thread()
591 !qca->txr.skb[qca->txr.head]) in qcaspi_spi_thread()
596 netdev_dbg(qca->net_dev, "have work to do. int: %lu, tx_skb: %p\n", in qcaspi_spi_thread()
597 qca->flags, in qcaspi_spi_thread()
598 qca->txr.skb[qca->txr.head]); in qcaspi_spi_thread()
600 qcaspi_qca7k_sync(qca, QCASPI_EVENT_UPDATE); in qcaspi_spi_thread()
602 if (qca->sync != QCASPI_SYNC_READY) { in qcaspi_spi_thread()
603 netdev_dbg(qca->net_dev, "sync: not ready %u, turn off carrier and flush\n", in qcaspi_spi_thread()
604 (unsigned int)qca->sync); in qcaspi_spi_thread()
605 netif_stop_queue(qca->net_dev); in qcaspi_spi_thread()
606 netif_carrier_off(qca->net_dev); in qcaspi_spi_thread()
607 qcaspi_flush_tx_ring(qca); in qcaspi_spi_thread()
611 if (test_and_clear_bit(SPI_INTR, &qca->flags)) { in qcaspi_spi_thread()
612 start_spi_intr_handling(qca, &intr_cause); in qcaspi_spi_thread()
615 qcaspi_qca7k_sync(qca, QCASPI_EVENT_CPUON); in qcaspi_spi_thread()
618 if (qca->frm_handle.state != qca->frm_handle.init) in qcaspi_spi_thread()
619 qca->net_dev->stats.rx_dropped++; in qcaspi_spi_thread()
621 qcafrm_fsm_init_spi(&qca->frm_handle); in qcaspi_spi_thread()
622 qca->stats.device_reset++; in qcaspi_spi_thread()
625 if (qca->sync != QCASPI_SYNC_READY) in qcaspi_spi_thread()
628 netif_wake_queue(qca->net_dev); in qcaspi_spi_thread()
629 netif_carrier_on(qca->net_dev); in qcaspi_spi_thread()
634 netdev_dbg(qca->net_dev, "===> rdbuf error!\n"); in qcaspi_spi_thread()
635 qca->stats.read_buf_err++; in qcaspi_spi_thread()
636 set_bit(SPI_RESET, &qca->flags); in qcaspi_spi_thread()
642 netdev_dbg(qca->net_dev, "===> wrbuf error!\n"); in qcaspi_spi_thread()
643 qca->stats.write_buf_err++; in qcaspi_spi_thread()
644 set_bit(SPI_RESET, &qca->flags); in qcaspi_spi_thread()
651 if (qca->sync == QCASPI_SYNC_READY) { in qcaspi_spi_thread()
653 qcaspi_receive(qca); in qcaspi_spi_thread()
656 end_spi_intr_handling(qca, intr_cause); in qcaspi_spi_thread()
659 if (qca->sync == QCASPI_SYNC_READY) in qcaspi_spi_thread()
660 qcaspi_transmit(qca); in qcaspi_spi_thread()
663 netdev_info(qca->net_dev, "SPI thread exit\n"); in qcaspi_spi_thread()
671 struct qcaspi *qca = data; in qcaspi_intr_handler() local
673 set_bit(SPI_INTR, &qca->flags); in qcaspi_intr_handler()
674 if (qca->spi_thread) in qcaspi_intr_handler()
675 wake_up_process(qca->spi_thread); in qcaspi_intr_handler()
683 struct qcaspi *qca = netdev_priv(dev); in qcaspi_netdev_open() local
686 if (!qca) in qcaspi_netdev_open()
689 set_bit(SPI_INTR, &qca->flags); in qcaspi_netdev_open()
690 qca->sync = QCASPI_SYNC_UNKNOWN; in qcaspi_netdev_open()
691 qcafrm_fsm_init_spi(&qca->frm_handle); in qcaspi_netdev_open()
694 qca, "%s", dev->name); in qcaspi_netdev_open()
702 qca->spi_thread = thread; in qcaspi_netdev_open()
704 enable_irq(qca->spi_dev->irq); in qcaspi_netdev_open()
714 struct qcaspi *qca = netdev_priv(dev); in qcaspi_netdev_close() local
718 qcaspi_write_register(qca, SPI_REG_INTR_ENABLE, 0, wr_verify); in qcaspi_netdev_close()
719 disable_irq(qca->spi_dev->irq); in qcaspi_netdev_close()
721 if (qca->spi_thread) { in qcaspi_netdev_close()
722 kthread_stop(qca->spi_thread); in qcaspi_netdev_close()
723 qca->spi_thread = NULL; in qcaspi_netdev_close()
725 qcaspi_flush_tx_ring(qca); in qcaspi_netdev_close()
735 struct qcaspi *qca = netdev_priv(dev); in qcaspi_netdev_xmit() local
743 if (qca->txr.skb[qca->txr.tail]) { in qcaspi_netdev_xmit()
744 netdev_warn(qca->net_dev, "queue was unexpectedly full!\n"); in qcaspi_netdev_xmit()
745 netif_stop_queue(qca->net_dev); in qcaspi_netdev_xmit()
746 qca->stats.ring_full++; in qcaspi_netdev_xmit()
755 qca->stats.out_of_mem++; in qcaspi_netdev_xmit()
774 netdev_dbg(qca->net_dev, "Tx-ing packet: Size: 0x%08x\n", in qcaspi_netdev_xmit()
777 qca->txr.size += skb->len + QCASPI_HW_PKT_LEN; in qcaspi_netdev_xmit()
779 new_tail = qca->txr.tail + 1; in qcaspi_netdev_xmit()
780 if (new_tail >= qca->txr.count) in qcaspi_netdev_xmit()
783 qca->txr.skb[qca->txr.tail] = skb; in qcaspi_netdev_xmit()
784 qca->txr.tail = new_tail; in qcaspi_netdev_xmit()
786 if (!qcaspi_tx_ring_has_space(&qca->txr)) { in qcaspi_netdev_xmit()
787 netif_stop_queue(qca->net_dev); in qcaspi_netdev_xmit()
788 qca->stats.ring_full++; in qcaspi_netdev_xmit()
793 if (qca->spi_thread) in qcaspi_netdev_xmit()
794 wake_up_process(qca->spi_thread); in qcaspi_netdev_xmit()
802 struct qcaspi *qca = netdev_priv(dev); in qcaspi_netdev_tx_timeout() local
804 netdev_info(qca->net_dev, "Transmit timeout at %ld, latency %ld\n", in qcaspi_netdev_tx_timeout()
806 qca->net_dev->stats.tx_errors++; in qcaspi_netdev_tx_timeout()
808 set_bit(SPI_RESET, &qca->flags); in qcaspi_netdev_tx_timeout()
810 if (qca->spi_thread) in qcaspi_netdev_tx_timeout()
811 wake_up_process(qca->spi_thread); in qcaspi_netdev_tx_timeout()
817 struct qcaspi *qca = netdev_priv(dev); in qcaspi_netdev_init() local
821 qca->burst_len = qcaspi_burst_len; in qcaspi_netdev_init()
822 qca->spi_thread = NULL; in qcaspi_netdev_init()
823 qca->buffer_size = (QCAFRM_MAX_MTU + VLAN_ETH_HLEN + QCAFRM_HEADER_LEN + in qcaspi_netdev_init()
826 memset(&qca->stats, 0, sizeof(struct qcaspi_stats)); in qcaspi_netdev_init()
828 qca->rx_buffer = kmalloc(qca->buffer_size, GFP_KERNEL); in qcaspi_netdev_init()
829 if (!qca->rx_buffer) in qcaspi_netdev_init()
832 qca->rx_skb = netdev_alloc_skb_ip_align(dev, qca->net_dev->mtu + in qcaspi_netdev_init()
834 if (!qca->rx_skb) { in qcaspi_netdev_init()
835 kfree(qca->rx_buffer); in qcaspi_netdev_init()
836 netdev_info(qca->net_dev, "Failed to allocate RX sk_buff.\n"); in qcaspi_netdev_init()
846 struct qcaspi *qca = netdev_priv(dev); in qcaspi_netdev_uninit() local
848 kfree(qca->rx_buffer); in qcaspi_netdev_uninit()
849 qca->buffer_size = 0; in qcaspi_netdev_uninit()
850 dev_kfree_skb(qca->rx_skb); in qcaspi_netdev_uninit()
867 struct qcaspi *qca = NULL; in qcaspi_netdev_setup() local
881 qca = netdev_priv(dev); in qcaspi_netdev_setup()
882 memset(qca, 0, sizeof(struct qcaspi)); in qcaspi_netdev_setup()
884 memset(&qca->txr, 0, sizeof(qca->txr)); in qcaspi_netdev_setup()
885 qca->txr.count = QCASPI_TX_RING_MAX_LEN; in qcaspi_netdev_setup()
889 { .compatible = "qca,qca7000" },
897 struct qcaspi *qca = NULL; in qca_spi_probe() local
909 "qca,legacy-mode"); in qca_spi_probe()
963 qca = netdev_priv(qcaspi_devs); in qca_spi_probe()
964 if (!qca) { in qca_spi_probe()
969 qca->net_dev = qcaspi_devs; in qca_spi_probe()
970 qca->spi_dev = spi; in qca_spi_probe()
971 qca->legacy_mode = legacy_mode; in qca_spi_probe()
976 IRQF_NO_AUTOEN, qca->net_dev->name, qca); in qca_spi_probe()
984 ret = of_get_ethdev_address(spi->dev.of_node, qca->net_dev); in qca_spi_probe()
986 eth_hw_addr_random(qca->net_dev); in qca_spi_probe()
988 qca->net_dev->dev_addr); in qca_spi_probe()
991 netif_carrier_off(qca->net_dev); in qca_spi_probe()
994 qcaspi_read_register(qca, SPI_REG_SIGNATURE, &signature); in qca_spi_probe()
995 qcaspi_read_register(qca, SPI_REG_SIGNATURE, &signature); in qca_spi_probe()
1012 qcaspi_init_device_debugfs(qca); in qca_spi_probe()
1021 struct qcaspi *qca = netdev_priv(qcaspi_devs); in qca_spi_remove() local
1023 qcaspi_remove_device_debugfs(qca); in qca_spi_remove()