Lines Matching refs:qca
77 start_spi_intr_handling(struct qcaspi *qca, u16 *intr_cause) in start_spi_intr_handling() argument
81 qcaspi_write_register(qca, SPI_REG_INTR_ENABLE, 0); in start_spi_intr_handling()
82 qcaspi_read_register(qca, SPI_REG_INTR_CAUSE, intr_cause); in start_spi_intr_handling()
83 netdev_dbg(qca->net_dev, "interrupts: 0x%04x\n", *intr_cause); in start_spi_intr_handling()
87 end_spi_intr_handling(struct qcaspi *qca, u16 intr_cause) in end_spi_intr_handling() argument
94 qcaspi_write_register(qca, SPI_REG_INTR_CAUSE, intr_cause); in end_spi_intr_handling()
95 qcaspi_write_register(qca, SPI_REG_INTR_ENABLE, intr_enable); in end_spi_intr_handling()
96 netdev_dbg(qca->net_dev, "acking int: 0x%04x\n", intr_cause); in end_spi_intr_handling()
100 qcaspi_write_burst(struct qcaspi *qca, u8 *src, u32 len) in qcaspi_write_burst() argument
103 struct spi_message *msg = &qca->spi_msg2; in qcaspi_write_burst()
104 struct spi_transfer *transfer = &qca->spi_xfer2[0]; in qcaspi_write_burst()
111 transfer = &qca->spi_xfer2[1]; in qcaspi_write_burst()
116 ret = spi_sync(qca->spi_dev, msg); in qcaspi_write_burst()
119 qcaspi_spi_error(qca); in qcaspi_write_burst()
127 qcaspi_write_legacy(struct qcaspi *qca, u8 *src, u32 len) in qcaspi_write_legacy() argument
129 struct spi_message *msg = &qca->spi_msg1; in qcaspi_write_legacy()
130 struct spi_transfer *transfer = &qca->spi_xfer1; in qcaspi_write_legacy()
137 ret = spi_sync(qca->spi_dev, msg); in qcaspi_write_legacy()
140 qcaspi_spi_error(qca); in qcaspi_write_legacy()
148 qcaspi_read_burst(struct qcaspi *qca, u8 *dst, u32 len) in qcaspi_read_burst() argument
150 struct spi_message *msg = &qca->spi_msg2; in qcaspi_read_burst()
152 struct spi_transfer *transfer = &qca->spi_xfer2[0]; in qcaspi_read_burst()
159 transfer = &qca->spi_xfer2[1]; in qcaspi_read_burst()
164 ret = spi_sync(qca->spi_dev, msg); in qcaspi_read_burst()
167 qcaspi_spi_error(qca); in qcaspi_read_burst()
175 qcaspi_read_legacy(struct qcaspi *qca, u8 *dst, u32 len) in qcaspi_read_legacy() argument
177 struct spi_message *msg = &qca->spi_msg1; in qcaspi_read_legacy()
178 struct spi_transfer *transfer = &qca->spi_xfer1; in qcaspi_read_legacy()
185 ret = spi_sync(qca->spi_dev, msg); in qcaspi_read_legacy()
188 qcaspi_spi_error(qca); in qcaspi_read_legacy()
196 qcaspi_tx_frame(struct qcaspi *qca, struct sk_buff *skb) in qcaspi_tx_frame() argument
205 qcaspi_write_register(qca, SPI_REG_BFR_SIZE, len); in qcaspi_tx_frame()
206 if (qca->legacy_mode) in qcaspi_tx_frame()
207 qcaspi_tx_cmd(qca, QCA7K_SPI_WRITE | QCA7K_SPI_EXTERNAL); in qcaspi_tx_frame()
212 if (count > qca->burst_len) in qcaspi_tx_frame()
213 count = qca->burst_len; in qcaspi_tx_frame()
215 if (qca->legacy_mode) { in qcaspi_tx_frame()
216 written = qcaspi_write_legacy(qca, in qcaspi_tx_frame()
220 written = qcaspi_write_burst(qca, in qcaspi_tx_frame()
236 qcaspi_transmit(struct qcaspi *qca) in qcaspi_transmit() argument
238 struct net_device_stats *n_stats = &qca->net_dev->stats; in qcaspi_transmit()
244 if (qca->txr.skb[qca->txr.head] == NULL) in qcaspi_transmit()
247 qcaspi_read_register(qca, SPI_REG_WRBUF_SPC_AVA, &available); in qcaspi_transmit()
249 while (qca->txr.skb[qca->txr.head]) { in qcaspi_transmit()
250 pkt_len = qca->txr.skb[qca->txr.head]->len + QCASPI_HW_PKT_LEN; in qcaspi_transmit()
254 qca->stats.write_buf_miss++; in qcaspi_transmit()
258 if (qcaspi_tx_frame(qca, qca->txr.skb[qca->txr.head]) == -1) { in qcaspi_transmit()
259 qca->stats.write_err++; in qcaspi_transmit()
265 n_stats->tx_bytes += qca->txr.skb[qca->txr.head]->len; in qcaspi_transmit()
272 netif_tx_lock_bh(qca->net_dev); in qcaspi_transmit()
273 dev_kfree_skb(qca->txr.skb[qca->txr.head]); in qcaspi_transmit()
274 qca->txr.skb[qca->txr.head] = NULL; in qcaspi_transmit()
275 qca->txr.size -= pkt_len; in qcaspi_transmit()
276 new_head = qca->txr.head + 1; in qcaspi_transmit()
277 if (new_head >= qca->txr.count) in qcaspi_transmit()
279 qca->txr.head = new_head; in qcaspi_transmit()
280 if (netif_queue_stopped(qca->net_dev)) in qcaspi_transmit()
281 netif_wake_queue(qca->net_dev); in qcaspi_transmit()
282 netif_tx_unlock_bh(qca->net_dev); in qcaspi_transmit()
289 qcaspi_receive(struct qcaspi *qca) in qcaspi_receive() argument
291 struct net_device *net_dev = qca->net_dev; in qcaspi_receive()
298 if (!qca->rx_skb) { in qcaspi_receive()
299 qca->rx_skb = netdev_alloc_skb(net_dev, in qcaspi_receive()
301 if (!qca->rx_skb) { in qcaspi_receive()
303 qca->stats.out_of_mem++; in qcaspi_receive()
309 qcaspi_read_register(qca, SPI_REG_RDBUF_BYTE_AVA, &available); in qcaspi_receive()
318 qcaspi_write_register(qca, SPI_REG_BFR_SIZE, available); in qcaspi_receive()
320 if (qca->legacy_mode) in qcaspi_receive()
321 qcaspi_tx_cmd(qca, QCA7K_SPI_READ | QCA7K_SPI_EXTERNAL); in qcaspi_receive()
326 if (count > qca->burst_len) in qcaspi_receive()
327 count = qca->burst_len; in qcaspi_receive()
329 if (qca->legacy_mode) { in qcaspi_receive()
330 bytes_read = qcaspi_read_legacy(qca, qca->rx_buffer, in qcaspi_receive()
333 bytes_read = qcaspi_read_burst(qca, qca->rx_buffer, in qcaspi_receive()
343 qca->stats.read_err++; in qcaspi_receive()
347 cp = qca->rx_buffer; in qcaspi_receive()
349 while ((bytes_read--) && (qca->rx_skb)) { in qcaspi_receive()
352 retcode = qcafrm_fsm_decode(&qca->frm_handle, in qcaspi_receive()
353 qca->rx_skb->data, in qcaspi_receive()
354 skb_tailroom(qca->rx_skb), in qcaspi_receive()
372 qca->rx_skb->dev = qca->net_dev; in qcaspi_receive()
375 skb_put(qca->rx_skb, retcode); in qcaspi_receive()
376 qca->rx_skb->protocol = eth_type_trans( in qcaspi_receive()
377 qca->rx_skb, qca->rx_skb->dev); in qcaspi_receive()
378 qca->rx_skb->ip_summed = CHECKSUM_UNNECESSARY; in qcaspi_receive()
379 netif_rx_ni(qca->rx_skb); in qcaspi_receive()
380 qca->rx_skb = netdev_alloc_skb(net_dev, in qcaspi_receive()
382 if (!qca->rx_skb) { in qcaspi_receive()
385 qca->stats.out_of_mem++; in qcaspi_receive()
413 qcaspi_flush_tx_ring(struct qcaspi *qca) in qcaspi_flush_tx_ring() argument
420 netif_tx_lock_bh(qca->net_dev); in qcaspi_flush_tx_ring()
422 if (qca->txr.skb[i]) { in qcaspi_flush_tx_ring()
423 dev_kfree_skb(qca->txr.skb[i]); in qcaspi_flush_tx_ring()
424 qca->txr.skb[i] = NULL; in qcaspi_flush_tx_ring()
425 qca->net_dev->stats.tx_dropped++; in qcaspi_flush_tx_ring()
428 qca->txr.tail = 0; in qcaspi_flush_tx_ring()
429 qca->txr.head = 0; in qcaspi_flush_tx_ring()
430 qca->txr.size = 0; in qcaspi_flush_tx_ring()
431 netif_tx_unlock_bh(qca->net_dev); in qcaspi_flush_tx_ring()
435 qcaspi_qca7k_sync(struct qcaspi *qca, int event) in qcaspi_qca7k_sync() argument
446 qcaspi_read_register(qca, SPI_REG_SIGNATURE, &signature); in qcaspi_qca7k_sync()
447 qcaspi_read_register(qca, SPI_REG_SIGNATURE, &signature); in qcaspi_qca7k_sync()
449 qca->sync = QCASPI_SYNC_UNKNOWN; in qcaspi_qca7k_sync()
450 netdev_dbg(qca->net_dev, "sync: got CPU on, but signature was invalid, restart\n"); in qcaspi_qca7k_sync()
453 qcaspi_read_register(qca, SPI_REG_WRBUF_SPC_AVA, in qcaspi_qca7k_sync()
456 netdev_dbg(qca->net_dev, "sync: got CPU on, but wrbuf not empty. reset!\n"); in qcaspi_qca7k_sync()
457 qca->sync = QCASPI_SYNC_UNKNOWN; in qcaspi_qca7k_sync()
459 netdev_dbg(qca->net_dev, "sync: got CPU on, now in sync\n"); in qcaspi_qca7k_sync()
460 qca->sync = QCASPI_SYNC_READY; in qcaspi_qca7k_sync()
466 switch (qca->sync) { in qcaspi_qca7k_sync()
469 qcaspi_read_register(qca, SPI_REG_SIGNATURE, &signature); in qcaspi_qca7k_sync()
471 qca->sync = QCASPI_SYNC_UNKNOWN; in qcaspi_qca7k_sync()
472 netdev_dbg(qca->net_dev, "sync: bad signature, restart\n"); in qcaspi_qca7k_sync()
479 qcaspi_read_register(qca, SPI_REG_SIGNATURE, &signature); in qcaspi_qca7k_sync()
481 netdev_dbg(qca->net_dev, "sync: could not read signature to reset device, retry.\n"); in qcaspi_qca7k_sync()
486 netdev_dbg(qca->net_dev, "sync: resetting device.\n"); in qcaspi_qca7k_sync()
487 qcaspi_read_register(qca, SPI_REG_SPI_CONFIG, &spi_config); in qcaspi_qca7k_sync()
489 qcaspi_write_register(qca, SPI_REG_SPI_CONFIG, spi_config); in qcaspi_qca7k_sync()
491 qca->sync = QCASPI_SYNC_RESET; in qcaspi_qca7k_sync()
492 qca->stats.trig_reset++; in qcaspi_qca7k_sync()
497 netdev_dbg(qca->net_dev, "sync: waiting for CPU on, count %u.\n", in qcaspi_qca7k_sync()
501 qca->sync = QCASPI_SYNC_UNKNOWN; in qcaspi_qca7k_sync()
502 qca->stats.reset_timeout++; in qcaspi_qca7k_sync()
503 netdev_dbg(qca->net_dev, "sync: reset timeout, restarting process.\n"); in qcaspi_qca7k_sync()
512 struct qcaspi *qca = data; in qcaspi_spi_thread() local
515 netdev_info(qca->net_dev, "SPI thread created\n"); in qcaspi_spi_thread()
518 if ((qca->intr_req == qca->intr_svc) && in qcaspi_spi_thread()
519 (qca->txr.skb[qca->txr.head] == NULL) && in qcaspi_spi_thread()
520 (qca->sync == QCASPI_SYNC_READY)) in qcaspi_spi_thread()
525 netdev_dbg(qca->net_dev, "have work to do. int: %d, tx_skb: %p\n", in qcaspi_spi_thread()
526 qca->intr_req - qca->intr_svc, in qcaspi_spi_thread()
527 qca->txr.skb[qca->txr.head]); in qcaspi_spi_thread()
529 qcaspi_qca7k_sync(qca, QCASPI_EVENT_UPDATE); in qcaspi_spi_thread()
531 if (qca->sync != QCASPI_SYNC_READY) { in qcaspi_spi_thread()
532 netdev_dbg(qca->net_dev, "sync: not ready %u, turn off carrier and flush\n", in qcaspi_spi_thread()
533 (unsigned int)qca->sync); in qcaspi_spi_thread()
534 netif_stop_queue(qca->net_dev); in qcaspi_spi_thread()
535 netif_carrier_off(qca->net_dev); in qcaspi_spi_thread()
536 qcaspi_flush_tx_ring(qca); in qcaspi_spi_thread()
540 if (qca->intr_svc != qca->intr_req) { in qcaspi_spi_thread()
541 qca->intr_svc = qca->intr_req; in qcaspi_spi_thread()
542 start_spi_intr_handling(qca, &intr_cause); in qcaspi_spi_thread()
545 qcaspi_qca7k_sync(qca, QCASPI_EVENT_CPUON); in qcaspi_spi_thread()
548 if (qca->sync != QCASPI_SYNC_READY) in qcaspi_spi_thread()
551 qca->stats.device_reset++; in qcaspi_spi_thread()
552 netif_wake_queue(qca->net_dev); in qcaspi_spi_thread()
553 netif_carrier_on(qca->net_dev); in qcaspi_spi_thread()
558 netdev_dbg(qca->net_dev, "===> rdbuf error!\n"); in qcaspi_spi_thread()
559 qca->stats.read_buf_err++; in qcaspi_spi_thread()
560 qca->sync = QCASPI_SYNC_UNKNOWN; in qcaspi_spi_thread()
566 netdev_dbg(qca->net_dev, "===> wrbuf error!\n"); in qcaspi_spi_thread()
567 qca->stats.write_buf_err++; in qcaspi_spi_thread()
568 qca->sync = QCASPI_SYNC_UNKNOWN; in qcaspi_spi_thread()
575 if (qca->sync == QCASPI_SYNC_READY) { in qcaspi_spi_thread()
577 qcaspi_receive(qca); in qcaspi_spi_thread()
580 end_spi_intr_handling(qca, intr_cause); in qcaspi_spi_thread()
583 if (qca->sync == QCASPI_SYNC_READY) in qcaspi_spi_thread()
584 qcaspi_transmit(qca); in qcaspi_spi_thread()
587 netdev_info(qca->net_dev, "SPI thread exit\n"); in qcaspi_spi_thread()
595 struct qcaspi *qca = data; in qcaspi_intr_handler() local
597 qca->intr_req++; in qcaspi_intr_handler()
598 if (qca->spi_thread && in qcaspi_intr_handler()
599 qca->spi_thread->state != TASK_RUNNING) in qcaspi_intr_handler()
600 wake_up_process(qca->spi_thread); in qcaspi_intr_handler()
608 struct qcaspi *qca = netdev_priv(dev); in qcaspi_netdev_open() local
611 if (!qca) in qcaspi_netdev_open()
614 qca->intr_req = 1; in qcaspi_netdev_open()
615 qca->intr_svc = 0; in qcaspi_netdev_open()
616 qca->sync = QCASPI_SYNC_UNKNOWN; in qcaspi_netdev_open()
617 qcafrm_fsm_init(&qca->frm_handle); in qcaspi_netdev_open()
619 qca->spi_thread = kthread_run((void *)qcaspi_spi_thread, in qcaspi_netdev_open()
620 qca, "%s", dev->name); in qcaspi_netdev_open()
622 if (IS_ERR(qca->spi_thread)) { in qcaspi_netdev_open()
625 return PTR_ERR(qca->spi_thread); in qcaspi_netdev_open()
628 ret = request_irq(qca->spi_dev->irq, qcaspi_intr_handler, 0, in qcaspi_netdev_open()
629 dev->name, qca); in qcaspi_netdev_open()
632 QCASPI_DRV_NAME, qca->spi_dev->irq, ret); in qcaspi_netdev_open()
633 kthread_stop(qca->spi_thread); in qcaspi_netdev_open()
637 netif_start_queue(qca->net_dev); in qcaspi_netdev_open()
645 struct qcaspi *qca = netdev_priv(dev); in qcaspi_netdev_close() local
649 qcaspi_write_register(qca, SPI_REG_INTR_ENABLE, 0); in qcaspi_netdev_close()
650 free_irq(qca->spi_dev->irq, qca); in qcaspi_netdev_close()
652 kthread_stop(qca->spi_thread); in qcaspi_netdev_close()
653 qca->spi_thread = NULL; in qcaspi_netdev_close()
654 qcaspi_flush_tx_ring(qca); in qcaspi_netdev_close()
664 struct qcaspi *qca = netdev_priv(dev); in qcaspi_netdev_xmit() local
672 if (qca->txr.skb[qca->txr.tail]) { in qcaspi_netdev_xmit()
673 netdev_warn(qca->net_dev, "queue was unexpectedly full!\n"); in qcaspi_netdev_xmit()
674 netif_stop_queue(qca->net_dev); in qcaspi_netdev_xmit()
675 qca->stats.ring_full++; in qcaspi_netdev_xmit()
684 netdev_dbg(qca->net_dev, "could not allocate tx_buff\n"); in qcaspi_netdev_xmit()
685 qca->stats.out_of_mem++; in qcaspi_netdev_xmit()
705 netdev_dbg(qca->net_dev, "Tx-ing packet: Size: 0x%08x\n", in qcaspi_netdev_xmit()
708 qca->txr.size += skb->len + QCASPI_HW_PKT_LEN; in qcaspi_netdev_xmit()
710 new_tail = qca->txr.tail + 1; in qcaspi_netdev_xmit()
711 if (new_tail >= qca->txr.count) in qcaspi_netdev_xmit()
714 qca->txr.skb[qca->txr.tail] = skb; in qcaspi_netdev_xmit()
715 qca->txr.tail = new_tail; in qcaspi_netdev_xmit()
717 if (!qcaspi_tx_ring_has_space(&qca->txr)) { in qcaspi_netdev_xmit()
718 netif_stop_queue(qca->net_dev); in qcaspi_netdev_xmit()
719 qca->stats.ring_full++; in qcaspi_netdev_xmit()
724 if (qca->spi_thread && in qcaspi_netdev_xmit()
725 qca->spi_thread->state != TASK_RUNNING) in qcaspi_netdev_xmit()
726 wake_up_process(qca->spi_thread); in qcaspi_netdev_xmit()
734 struct qcaspi *qca = netdev_priv(dev); in qcaspi_netdev_tx_timeout() local
736 netdev_info(qca->net_dev, "Transmit timeout at %ld, latency %ld\n", in qcaspi_netdev_tx_timeout()
738 qca->net_dev->stats.tx_errors++; in qcaspi_netdev_tx_timeout()
740 qca->sync = QCASPI_SYNC_UNKNOWN; in qcaspi_netdev_tx_timeout()
746 struct qcaspi *qca = netdev_priv(dev); in qcaspi_netdev_init() local
750 qca->clkspeed = qcaspi_clkspeed; in qcaspi_netdev_init()
751 qca->burst_len = qcaspi_burst_len; in qcaspi_netdev_init()
752 qca->spi_thread = NULL; in qcaspi_netdev_init()
753 qca->buffer_size = (dev->mtu + VLAN_ETH_HLEN + QCAFRM_HEADER_LEN + in qcaspi_netdev_init()
756 memset(&qca->stats, 0, sizeof(struct qcaspi_stats)); in qcaspi_netdev_init()
758 qca->rx_buffer = kmalloc(qca->buffer_size, GFP_KERNEL); in qcaspi_netdev_init()
759 if (!qca->rx_buffer) in qcaspi_netdev_init()
762 qca->rx_skb = netdev_alloc_skb(dev, qca->net_dev->mtu + VLAN_ETH_HLEN); in qcaspi_netdev_init()
763 if (!qca->rx_skb) { in qcaspi_netdev_init()
764 kfree(qca->rx_buffer); in qcaspi_netdev_init()
765 netdev_info(qca->net_dev, "Failed to allocate RX sk_buff.\n"); in qcaspi_netdev_init()
775 struct qcaspi *qca = netdev_priv(dev); in qcaspi_netdev_uninit() local
777 kfree(qca->rx_buffer); in qcaspi_netdev_uninit()
778 qca->buffer_size = 0; in qcaspi_netdev_uninit()
779 if (qca->rx_skb) in qcaspi_netdev_uninit()
780 dev_kfree_skb(qca->rx_skb); in qcaspi_netdev_uninit()
809 struct qcaspi *qca = NULL; in qcaspi_netdev_setup() local
817 qca = netdev_priv(dev); in qcaspi_netdev_setup()
818 memset(qca, 0, sizeof(struct qcaspi)); in qcaspi_netdev_setup()
820 memset(&qca->spi_xfer1, 0, sizeof(struct spi_transfer)); in qcaspi_netdev_setup()
821 memset(&qca->spi_xfer2, 0, sizeof(struct spi_transfer) * 2); in qcaspi_netdev_setup()
823 spi_message_init(&qca->spi_msg1); in qcaspi_netdev_setup()
824 spi_message_add_tail(&qca->spi_xfer1, &qca->spi_msg1); in qcaspi_netdev_setup()
826 spi_message_init(&qca->spi_msg2); in qcaspi_netdev_setup()
827 spi_message_add_tail(&qca->spi_xfer2[0], &qca->spi_msg2); in qcaspi_netdev_setup()
828 spi_message_add_tail(&qca->spi_xfer2[1], &qca->spi_msg2); in qcaspi_netdev_setup()
830 memset(&qca->txr, 0, sizeof(qca->txr)); in qcaspi_netdev_setup()
831 qca->txr.count = TX_RING_MAX_LEN; in qcaspi_netdev_setup()
843 struct qcaspi *qca = NULL; in qca_spi_probe() local
904 qca = netdev_priv(qcaspi_devs); in qca_spi_probe()
905 if (!qca) { in qca_spi_probe()
910 qca->net_dev = qcaspi_devs; in qca_spi_probe()
911 qca->spi_dev = spi; in qca_spi_probe()
912 qca->legacy_mode = legacy_mode; in qca_spi_probe()
919 ether_addr_copy(qca->net_dev->dev_addr, mac); in qca_spi_probe()
921 if (!is_valid_ether_addr(qca->net_dev->dev_addr)) { in qca_spi_probe()
922 eth_hw_addr_random(qca->net_dev); in qca_spi_probe()
924 qca->net_dev->dev_addr); in qca_spi_probe()
927 netif_carrier_off(qca->net_dev); in qca_spi_probe()
930 qcaspi_read_register(qca, SPI_REG_SIGNATURE, &signature); in qca_spi_probe()
931 qcaspi_read_register(qca, SPI_REG_SIGNATURE, &signature); in qca_spi_probe()
948 qcaspi_init_device_debugfs(qca); in qca_spi_probe()
957 struct qcaspi *qca = netdev_priv(qcaspi_devs); in qca_spi_remove() local
959 qcaspi_remove_device_debugfs(qca); in qca_spi_remove()