Lines Matching full:qca
81 start_spi_intr_handling(struct qcaspi *qca, u16 *intr_cause) in start_spi_intr_handling() argument
85 qcaspi_write_register(qca, SPI_REG_INTR_ENABLE, 0, wr_verify); in start_spi_intr_handling()
86 qcaspi_read_register(qca, SPI_REG_INTR_CAUSE, intr_cause); in start_spi_intr_handling()
87 netdev_dbg(qca->net_dev, "interrupts: 0x%04x\n", *intr_cause); in start_spi_intr_handling()
91 end_spi_intr_handling(struct qcaspi *qca, u16 intr_cause) in end_spi_intr_handling() argument
98 qcaspi_write_register(qca, SPI_REG_INTR_CAUSE, intr_cause, 0); in end_spi_intr_handling()
99 qcaspi_write_register(qca, SPI_REG_INTR_ENABLE, intr_enable, wr_verify); in end_spi_intr_handling()
100 netdev_dbg(qca->net_dev, "acking int: 0x%04x\n", intr_cause); in end_spi_intr_handling()
104 qcaspi_write_burst(struct qcaspi *qca, u8 *src, u32 len) in qcaspi_write_burst() argument
122 ret = spi_sync(qca->spi_dev, &msg); in qcaspi_write_burst()
125 qcaspi_spi_error(qca); in qcaspi_write_burst()
133 qcaspi_write_legacy(struct qcaspi *qca, u8 *src, u32 len) in qcaspi_write_legacy() argument
146 ret = spi_sync(qca->spi_dev, &msg); in qcaspi_write_legacy()
149 qcaspi_spi_error(qca); in qcaspi_write_legacy()
157 qcaspi_read_burst(struct qcaspi *qca, u8 *dst, u32 len) in qcaspi_read_burst() argument
175 ret = spi_sync(qca->spi_dev, &msg); in qcaspi_read_burst()
178 qcaspi_spi_error(qca); in qcaspi_read_burst()
186 qcaspi_read_legacy(struct qcaspi *qca, u8 *dst, u32 len) in qcaspi_read_legacy() argument
199 ret = spi_sync(qca->spi_dev, &msg); in qcaspi_read_legacy()
202 qcaspi_spi_error(qca); in qcaspi_read_legacy()
210 qcaspi_tx_cmd(struct qcaspi *qca, u16 cmd) in qcaspi_tx_cmd() argument
226 ret = spi_sync(qca->spi_dev, &msg); in qcaspi_tx_cmd()
232 qcaspi_spi_error(qca); in qcaspi_tx_cmd()
238 qcaspi_tx_frame(struct qcaspi *qca, struct sk_buff *skb) in qcaspi_tx_frame() argument
247 qcaspi_write_register(qca, SPI_REG_BFR_SIZE, len, wr_verify); in qcaspi_tx_frame()
248 if (qca->legacy_mode) in qcaspi_tx_frame()
249 qcaspi_tx_cmd(qca, QCA7K_SPI_WRITE | QCA7K_SPI_EXTERNAL); in qcaspi_tx_frame()
254 if (count > qca->burst_len) in qcaspi_tx_frame()
255 count = qca->burst_len; in qcaspi_tx_frame()
257 if (qca->legacy_mode) { in qcaspi_tx_frame()
258 written = qcaspi_write_legacy(qca, in qcaspi_tx_frame()
262 written = qcaspi_write_burst(qca, in qcaspi_tx_frame()
278 qcaspi_transmit(struct qcaspi *qca) in qcaspi_transmit() argument
280 struct net_device_stats *n_stats = &qca->net_dev->stats; in qcaspi_transmit()
286 if (qca->txr.skb[qca->txr.head] == NULL) in qcaspi_transmit()
289 qcaspi_read_register(qca, SPI_REG_WRBUF_SPC_AVA, &available); in qcaspi_transmit()
295 qca->stats.buf_avail_err++; in qcaspi_transmit()
299 while (qca->txr.skb[qca->txr.head]) { in qcaspi_transmit()
300 pkt_len = qca->txr.skb[qca->txr.head]->len + QCASPI_HW_PKT_LEN; in qcaspi_transmit()
304 qca->stats.write_buf_miss++; in qcaspi_transmit()
308 if (qcaspi_tx_frame(qca, qca->txr.skb[qca->txr.head]) == -1) { in qcaspi_transmit()
309 qca->stats.write_err++; in qcaspi_transmit()
315 n_stats->tx_bytes += qca->txr.skb[qca->txr.head]->len; in qcaspi_transmit()
322 netif_tx_lock_bh(qca->net_dev); in qcaspi_transmit()
323 dev_kfree_skb(qca->txr.skb[qca->txr.head]); in qcaspi_transmit()
324 qca->txr.skb[qca->txr.head] = NULL; in qcaspi_transmit()
325 qca->txr.size -= pkt_len; in qcaspi_transmit()
326 new_head = qca->txr.head + 1; in qcaspi_transmit()
327 if (new_head >= qca->txr.count) in qcaspi_transmit()
329 qca->txr.head = new_head; in qcaspi_transmit()
330 if (netif_queue_stopped(qca->net_dev)) in qcaspi_transmit()
331 netif_wake_queue(qca->net_dev); in qcaspi_transmit()
332 netif_tx_unlock_bh(qca->net_dev); in qcaspi_transmit()
339 qcaspi_receive(struct qcaspi *qca) in qcaspi_receive() argument
341 struct net_device *net_dev = qca->net_dev; in qcaspi_receive()
348 if (!qca->rx_skb) { in qcaspi_receive()
349 qca->rx_skb = netdev_alloc_skb_ip_align(net_dev, in qcaspi_receive()
352 if (!qca->rx_skb) { in qcaspi_receive()
354 qca->stats.out_of_mem++; in qcaspi_receive()
360 qcaspi_read_register(qca, SPI_REG_RDBUF_BYTE_AVA, &available); in qcaspi_receive()
369 qca->stats.buf_avail_err++; in qcaspi_receive()
376 qcaspi_write_register(qca, SPI_REG_BFR_SIZE, available, wr_verify); in qcaspi_receive()
378 if (qca->legacy_mode) in qcaspi_receive()
379 qcaspi_tx_cmd(qca, QCA7K_SPI_READ | QCA7K_SPI_EXTERNAL); in qcaspi_receive()
384 if (count > qca->burst_len) in qcaspi_receive()
385 count = qca->burst_len; in qcaspi_receive()
387 if (qca->legacy_mode) { in qcaspi_receive()
388 bytes_read = qcaspi_read_legacy(qca, qca->rx_buffer, in qcaspi_receive()
391 bytes_read = qcaspi_read_burst(qca, qca->rx_buffer, in qcaspi_receive()
401 qca->stats.read_err++; in qcaspi_receive()
405 cp = qca->rx_buffer; in qcaspi_receive()
407 while ((bytes_read--) && (qca->rx_skb)) { in qcaspi_receive()
410 retcode = qcafrm_fsm_decode(&qca->frm_handle, in qcaspi_receive()
411 qca->rx_skb->data, in qcaspi_receive()
412 skb_tailroom(qca->rx_skb), in qcaspi_receive()
430 qca->rx_skb->dev = qca->net_dev; in qcaspi_receive()
433 skb_put(qca->rx_skb, retcode); in qcaspi_receive()
434 qca->rx_skb->protocol = eth_type_trans( in qcaspi_receive()
435 qca->rx_skb, qca->rx_skb->dev); in qcaspi_receive()
436 skb_checksum_none_assert(qca->rx_skb); in qcaspi_receive()
437 netif_rx(qca->rx_skb); in qcaspi_receive()
438 qca->rx_skb = netdev_alloc_skb_ip_align(net_dev, in qcaspi_receive()
440 if (!qca->rx_skb) { in qcaspi_receive()
443 qca->stats.out_of_mem++; in qcaspi_receive()
454 * that fit into the internal QCA buffer.
471 qcaspi_flush_tx_ring(struct qcaspi *qca) in qcaspi_flush_tx_ring() argument
478 netif_tx_lock_bh(qca->net_dev); in qcaspi_flush_tx_ring()
480 if (qca->txr.skb[i]) { in qcaspi_flush_tx_ring()
481 dev_kfree_skb(qca->txr.skb[i]); in qcaspi_flush_tx_ring()
482 qca->txr.skb[i] = NULL; in qcaspi_flush_tx_ring()
483 qca->net_dev->stats.tx_dropped++; in qcaspi_flush_tx_ring()
486 qca->txr.tail = 0; in qcaspi_flush_tx_ring()
487 qca->txr.head = 0; in qcaspi_flush_tx_ring()
488 qca->txr.size = 0; in qcaspi_flush_tx_ring()
489 netif_tx_unlock_bh(qca->net_dev); in qcaspi_flush_tx_ring()
493 qcaspi_qca7k_sync(struct qcaspi *qca, int event) in qcaspi_qca7k_sync() argument
503 qcaspi_read_register(qca, SPI_REG_SIGNATURE, &signature); in qcaspi_qca7k_sync()
504 qcaspi_read_register(qca, SPI_REG_SIGNATURE, &signature); in qcaspi_qca7k_sync()
506 if (qca->sync == QCASPI_SYNC_READY) in qcaspi_qca7k_sync()
507 qca->stats.bad_signature++; in qcaspi_qca7k_sync()
509 qca->sync = QCASPI_SYNC_UNKNOWN; in qcaspi_qca7k_sync()
510 netdev_dbg(qca->net_dev, "sync: got CPU on, but signature was invalid, restart\n"); in qcaspi_qca7k_sync()
514 qcaspi_read_register(qca, SPI_REG_WRBUF_SPC_AVA, in qcaspi_qca7k_sync()
517 netdev_dbg(qca->net_dev, "sync: got CPU on, but wrbuf not empty. reset!\n"); in qcaspi_qca7k_sync()
518 qca->sync = QCASPI_SYNC_UNKNOWN; in qcaspi_qca7k_sync()
520 netdev_dbg(qca->net_dev, "sync: got CPU on, now in sync\n"); in qcaspi_qca7k_sync()
521 qca->sync = QCASPI_SYNC_READY; in qcaspi_qca7k_sync()
527 switch (qca->sync) { in qcaspi_qca7k_sync()
530 qcaspi_read_register(qca, SPI_REG_SIGNATURE, &signature); in qcaspi_qca7k_sync()
532 qcaspi_read_register(qca, SPI_REG_SIGNATURE, &signature); in qcaspi_qca7k_sync()
535 qca->sync = QCASPI_SYNC_UNKNOWN; in qcaspi_qca7k_sync()
536 qca->stats.bad_signature++; in qcaspi_qca7k_sync()
537 netdev_dbg(qca->net_dev, "sync: bad signature, restart\n"); in qcaspi_qca7k_sync()
544 qcaspi_read_register(qca, SPI_REG_SIGNATURE, &signature); in qcaspi_qca7k_sync()
546 netdev_dbg(qca->net_dev, "sync: could not read signature to reset device, retry.\n"); in qcaspi_qca7k_sync()
551 netdev_dbg(qca->net_dev, "sync: resetting device.\n"); in qcaspi_qca7k_sync()
552 qcaspi_read_register(qca, SPI_REG_SPI_CONFIG, &spi_config); in qcaspi_qca7k_sync()
554 qcaspi_write_register(qca, SPI_REG_SPI_CONFIG, spi_config, 0); in qcaspi_qca7k_sync()
556 qca->sync = QCASPI_SYNC_RESET; in qcaspi_qca7k_sync()
557 qca->stats.trig_reset++; in qcaspi_qca7k_sync()
558 qca->reset_count = 0; in qcaspi_qca7k_sync()
561 qca->reset_count++; in qcaspi_qca7k_sync()
562 netdev_dbg(qca->net_dev, "sync: waiting for CPU on, count %u.\n", in qcaspi_qca7k_sync()
563 qca->reset_count); in qcaspi_qca7k_sync()
564 if (qca->reset_count >= QCASPI_RESET_TIMEOUT) { in qcaspi_qca7k_sync()
566 qca->sync = QCASPI_SYNC_UNKNOWN; in qcaspi_qca7k_sync()
567 qca->stats.reset_timeout++; in qcaspi_qca7k_sync()
568 netdev_dbg(qca->net_dev, "sync: reset timeout, restarting process.\n"); in qcaspi_qca7k_sync()
577 struct qcaspi *qca = data; in qcaspi_spi_thread() local
580 netdev_info(qca->net_dev, "SPI thread created\n"); in qcaspi_spi_thread()
584 netif_tx_disable(qca->net_dev); in qcaspi_spi_thread()
585 netif_carrier_off(qca->net_dev); in qcaspi_spi_thread()
586 qcaspi_flush_tx_ring(qca); in qcaspi_spi_thread()
588 if (qca->sync == QCASPI_SYNC_READY) { in qcaspi_spi_thread()
589 netif_carrier_on(qca->net_dev); in qcaspi_spi_thread()
590 netif_wake_queue(qca->net_dev); in qcaspi_spi_thread()
595 if ((qca->intr_req == qca->intr_svc) && in qcaspi_spi_thread()
596 !qca->txr.skb[qca->txr.head]) in qcaspi_spi_thread()
601 netdev_dbg(qca->net_dev, "have work to do. int: %d, tx_skb: %p\n", in qcaspi_spi_thread()
602 qca->intr_req - qca->intr_svc, in qcaspi_spi_thread()
603 qca->txr.skb[qca->txr.head]); in qcaspi_spi_thread()
605 qcaspi_qca7k_sync(qca, QCASPI_EVENT_UPDATE); in qcaspi_spi_thread()
607 if (qca->sync != QCASPI_SYNC_READY) { in qcaspi_spi_thread()
608 netdev_dbg(qca->net_dev, "sync: not ready %u, turn off carrier and flush\n", in qcaspi_spi_thread()
609 (unsigned int)qca->sync); in qcaspi_spi_thread()
610 netif_stop_queue(qca->net_dev); in qcaspi_spi_thread()
611 netif_carrier_off(qca->net_dev); in qcaspi_spi_thread()
612 qcaspi_flush_tx_ring(qca); in qcaspi_spi_thread()
616 if (qca->intr_svc != qca->intr_req) { in qcaspi_spi_thread()
617 qca->intr_svc = qca->intr_req; in qcaspi_spi_thread()
618 start_spi_intr_handling(qca, &intr_cause); in qcaspi_spi_thread()
621 qcaspi_qca7k_sync(qca, QCASPI_EVENT_CPUON); in qcaspi_spi_thread()
624 if (qca->frm_handle.state != qca->frm_handle.init) in qcaspi_spi_thread()
625 qca->net_dev->stats.rx_dropped++; in qcaspi_spi_thread()
627 qcafrm_fsm_init_spi(&qca->frm_handle); in qcaspi_spi_thread()
628 qca->stats.device_reset++; in qcaspi_spi_thread()
631 if (qca->sync != QCASPI_SYNC_READY) in qcaspi_spi_thread()
634 netif_wake_queue(qca->net_dev); in qcaspi_spi_thread()
635 netif_carrier_on(qca->net_dev); in qcaspi_spi_thread()
640 netdev_dbg(qca->net_dev, "===> rdbuf error!\n"); in qcaspi_spi_thread()
641 qca->stats.read_buf_err++; in qcaspi_spi_thread()
642 qca->sync = QCASPI_SYNC_UNKNOWN; in qcaspi_spi_thread()
648 netdev_dbg(qca->net_dev, "===> wrbuf error!\n"); in qcaspi_spi_thread()
649 qca->stats.write_buf_err++; in qcaspi_spi_thread()
650 qca->sync = QCASPI_SYNC_UNKNOWN; in qcaspi_spi_thread()
657 if (qca->sync == QCASPI_SYNC_READY) { in qcaspi_spi_thread()
659 qcaspi_receive(qca); in qcaspi_spi_thread()
662 end_spi_intr_handling(qca, intr_cause); in qcaspi_spi_thread()
665 if (qca->sync == QCASPI_SYNC_READY) in qcaspi_spi_thread()
666 qcaspi_transmit(qca); in qcaspi_spi_thread()
669 netdev_info(qca->net_dev, "SPI thread exit\n"); in qcaspi_spi_thread()
677 struct qcaspi *qca = data; in qcaspi_intr_handler() local
679 qca->intr_req++; in qcaspi_intr_handler()
680 if (qca->spi_thread) in qcaspi_intr_handler()
681 wake_up_process(qca->spi_thread); in qcaspi_intr_handler()
689 struct qcaspi *qca = netdev_priv(dev); in qcaspi_netdev_open() local
692 if (!qca) in qcaspi_netdev_open()
695 qca->intr_req = 1; in qcaspi_netdev_open()
696 qca->intr_svc = 0; in qcaspi_netdev_open()
697 qca->sync = QCASPI_SYNC_UNKNOWN; in qcaspi_netdev_open()
698 qcafrm_fsm_init_spi(&qca->frm_handle); in qcaspi_netdev_open()
700 qca->spi_thread = kthread_run((void *)qcaspi_spi_thread, in qcaspi_netdev_open()
701 qca, "%s", dev->name); in qcaspi_netdev_open()
703 if (IS_ERR(qca->spi_thread)) { in qcaspi_netdev_open()
706 return PTR_ERR(qca->spi_thread); in qcaspi_netdev_open()
709 ret = request_irq(qca->spi_dev->irq, qcaspi_intr_handler, 0, in qcaspi_netdev_open()
710 dev->name, qca); in qcaspi_netdev_open()
713 QCASPI_DRV_NAME, qca->spi_dev->irq, ret); in qcaspi_netdev_open()
714 kthread_stop(qca->spi_thread); in qcaspi_netdev_open()
726 struct qcaspi *qca = netdev_priv(dev); in qcaspi_netdev_close() local
730 qcaspi_write_register(qca, SPI_REG_INTR_ENABLE, 0, wr_verify); in qcaspi_netdev_close()
731 free_irq(qca->spi_dev->irq, qca); in qcaspi_netdev_close()
733 kthread_stop(qca->spi_thread); in qcaspi_netdev_close()
734 qca->spi_thread = NULL; in qcaspi_netdev_close()
735 qcaspi_flush_tx_ring(qca); in qcaspi_netdev_close()
745 struct qcaspi *qca = netdev_priv(dev); in qcaspi_netdev_xmit() local
753 if (qca->txr.skb[qca->txr.tail]) { in qcaspi_netdev_xmit()
754 netdev_warn(qca->net_dev, "queue was unexpectedly full!\n"); in qcaspi_netdev_xmit()
755 netif_stop_queue(qca->net_dev); in qcaspi_netdev_xmit()
756 qca->stats.ring_full++; in qcaspi_netdev_xmit()
765 qca->stats.out_of_mem++; in qcaspi_netdev_xmit()
784 netdev_dbg(qca->net_dev, "Tx-ing packet: Size: 0x%08x\n", in qcaspi_netdev_xmit()
787 qca->txr.size += skb->len + QCASPI_HW_PKT_LEN; in qcaspi_netdev_xmit()
789 new_tail = qca->txr.tail + 1; in qcaspi_netdev_xmit()
790 if (new_tail >= qca->txr.count) in qcaspi_netdev_xmit()
793 qca->txr.skb[qca->txr.tail] = skb; in qcaspi_netdev_xmit()
794 qca->txr.tail = new_tail; in qcaspi_netdev_xmit()
796 if (!qcaspi_tx_ring_has_space(&qca->txr)) { in qcaspi_netdev_xmit()
797 netif_stop_queue(qca->net_dev); in qcaspi_netdev_xmit()
798 qca->stats.ring_full++; in qcaspi_netdev_xmit()
803 if (qca->spi_thread) in qcaspi_netdev_xmit()
804 wake_up_process(qca->spi_thread); in qcaspi_netdev_xmit()
812 struct qcaspi *qca = netdev_priv(dev); in qcaspi_netdev_tx_timeout() local
814 netdev_info(qca->net_dev, "Transmit timeout at %ld, latency %ld\n", in qcaspi_netdev_tx_timeout()
816 qca->net_dev->stats.tx_errors++; in qcaspi_netdev_tx_timeout()
818 qca->sync = QCASPI_SYNC_UNKNOWN; in qcaspi_netdev_tx_timeout()
820 if (qca->spi_thread) in qcaspi_netdev_tx_timeout()
821 wake_up_process(qca->spi_thread); in qcaspi_netdev_tx_timeout()
827 struct qcaspi *qca = netdev_priv(dev); in qcaspi_netdev_init() local
831 qca->clkspeed = qcaspi_clkspeed; in qcaspi_netdev_init()
832 qca->burst_len = qcaspi_burst_len; in qcaspi_netdev_init()
833 qca->spi_thread = NULL; in qcaspi_netdev_init()
834 qca->buffer_size = (dev->mtu + VLAN_ETH_HLEN + QCAFRM_HEADER_LEN + in qcaspi_netdev_init()
837 memset(&qca->stats, 0, sizeof(struct qcaspi_stats)); in qcaspi_netdev_init()
839 qca->rx_buffer = kmalloc(qca->buffer_size, GFP_KERNEL); in qcaspi_netdev_init()
840 if (!qca->rx_buffer) in qcaspi_netdev_init()
843 qca->rx_skb = netdev_alloc_skb_ip_align(dev, qca->net_dev->mtu + in qcaspi_netdev_init()
845 if (!qca->rx_skb) { in qcaspi_netdev_init()
846 kfree(qca->rx_buffer); in qcaspi_netdev_init()
847 netdev_info(qca->net_dev, "Failed to allocate RX sk_buff.\n"); in qcaspi_netdev_init()
857 struct qcaspi *qca = netdev_priv(dev); in qcaspi_netdev_uninit() local
859 kfree(qca->rx_buffer); in qcaspi_netdev_uninit()
860 qca->buffer_size = 0; in qcaspi_netdev_uninit()
861 dev_kfree_skb(qca->rx_skb); in qcaspi_netdev_uninit()
878 struct qcaspi *qca = NULL; in qcaspi_netdev_setup() local
890 qca = netdev_priv(dev); in qcaspi_netdev_setup()
891 memset(qca, 0, sizeof(struct qcaspi)); in qcaspi_netdev_setup()
893 memset(&qca->txr, 0, sizeof(qca->txr)); in qcaspi_netdev_setup()
894 qca->txr.count = TX_RING_MAX_LEN; in qcaspi_netdev_setup()
898 { .compatible = "qca,qca7000" },
906 struct qcaspi *qca = NULL; in qca_spi_probe() local
918 "qca,legacy-mode"); in qca_spi_probe()
975 qca = netdev_priv(qcaspi_devs); in qca_spi_probe()
976 if (!qca) { in qca_spi_probe()
981 qca->net_dev = qcaspi_devs; in qca_spi_probe()
982 qca->spi_dev = spi; in qca_spi_probe()
983 qca->legacy_mode = legacy_mode; in qca_spi_probe()
987 ret = of_get_ethdev_address(spi->dev.of_node, qca->net_dev); in qca_spi_probe()
989 eth_hw_addr_random(qca->net_dev); in qca_spi_probe()
991 qca->net_dev->dev_addr); in qca_spi_probe()
994 netif_carrier_off(qca->net_dev); in qca_spi_probe()
997 qcaspi_read_register(qca, SPI_REG_SIGNATURE, &signature); in qca_spi_probe()
998 qcaspi_read_register(qca, SPI_REG_SIGNATURE, &signature); in qca_spi_probe()
1015 qcaspi_init_device_debugfs(qca); in qca_spi_probe()
1024 struct qcaspi *qca = netdev_priv(qcaspi_devs); in qca_spi_remove() local
1026 qcaspi_remove_device_debugfs(qca); in qca_spi_remove()