Lines Matching refs:qca
76 start_spi_intr_handling(struct qcaspi *qca, u16 *intr_cause) in start_spi_intr_handling() argument
80 qcaspi_write_register(qca, SPI_REG_INTR_ENABLE, 0); in start_spi_intr_handling()
81 qcaspi_read_register(qca, SPI_REG_INTR_CAUSE, intr_cause); in start_spi_intr_handling()
82 netdev_dbg(qca->net_dev, "interrupts: 0x%04x\n", *intr_cause); in start_spi_intr_handling()
86 end_spi_intr_handling(struct qcaspi *qca, u16 intr_cause) in end_spi_intr_handling() argument
93 qcaspi_write_register(qca, SPI_REG_INTR_CAUSE, intr_cause); in end_spi_intr_handling()
94 qcaspi_write_register(qca, SPI_REG_INTR_ENABLE, intr_enable); in end_spi_intr_handling()
95 netdev_dbg(qca->net_dev, "acking int: 0x%04x\n", intr_cause); in end_spi_intr_handling()
99 qcaspi_write_burst(struct qcaspi *qca, u8 *src, u32 len) in qcaspi_write_burst() argument
117 ret = spi_sync(qca->spi_dev, &msg); in qcaspi_write_burst()
120 qcaspi_spi_error(qca); in qcaspi_write_burst()
128 qcaspi_write_legacy(struct qcaspi *qca, u8 *src, u32 len) in qcaspi_write_legacy() argument
141 ret = spi_sync(qca->spi_dev, &msg); in qcaspi_write_legacy()
144 qcaspi_spi_error(qca); in qcaspi_write_legacy()
152 qcaspi_read_burst(struct qcaspi *qca, u8 *dst, u32 len) in qcaspi_read_burst() argument
170 ret = spi_sync(qca->spi_dev, &msg); in qcaspi_read_burst()
173 qcaspi_spi_error(qca); in qcaspi_read_burst()
181 qcaspi_read_legacy(struct qcaspi *qca, u8 *dst, u32 len) in qcaspi_read_legacy() argument
194 ret = spi_sync(qca->spi_dev, &msg); in qcaspi_read_legacy()
197 qcaspi_spi_error(qca); in qcaspi_read_legacy()
205 qcaspi_tx_cmd(struct qcaspi *qca, u16 cmd) in qcaspi_tx_cmd() argument
221 ret = spi_sync(qca->spi_dev, &msg); in qcaspi_tx_cmd()
227 qcaspi_spi_error(qca); in qcaspi_tx_cmd()
233 qcaspi_tx_frame(struct qcaspi *qca, struct sk_buff *skb) in qcaspi_tx_frame() argument
242 qcaspi_write_register(qca, SPI_REG_BFR_SIZE, len); in qcaspi_tx_frame()
243 if (qca->legacy_mode) in qcaspi_tx_frame()
244 qcaspi_tx_cmd(qca, QCA7K_SPI_WRITE | QCA7K_SPI_EXTERNAL); in qcaspi_tx_frame()
249 if (count > qca->burst_len) in qcaspi_tx_frame()
250 count = qca->burst_len; in qcaspi_tx_frame()
252 if (qca->legacy_mode) { in qcaspi_tx_frame()
253 written = qcaspi_write_legacy(qca, in qcaspi_tx_frame()
257 written = qcaspi_write_burst(qca, in qcaspi_tx_frame()
273 qcaspi_transmit(struct qcaspi *qca) in qcaspi_transmit() argument
275 struct net_device_stats *n_stats = &qca->net_dev->stats; in qcaspi_transmit()
281 if (qca->txr.skb[qca->txr.head] == NULL) in qcaspi_transmit()
284 qcaspi_read_register(qca, SPI_REG_WRBUF_SPC_AVA, &available); in qcaspi_transmit()
286 while (qca->txr.skb[qca->txr.head]) { in qcaspi_transmit()
287 pkt_len = qca->txr.skb[qca->txr.head]->len + QCASPI_HW_PKT_LEN; in qcaspi_transmit()
291 qca->stats.write_buf_miss++; in qcaspi_transmit()
295 if (qcaspi_tx_frame(qca, qca->txr.skb[qca->txr.head]) == -1) { in qcaspi_transmit()
296 qca->stats.write_err++; in qcaspi_transmit()
302 n_stats->tx_bytes += qca->txr.skb[qca->txr.head]->len; in qcaspi_transmit()
309 netif_tx_lock_bh(qca->net_dev); in qcaspi_transmit()
310 dev_kfree_skb(qca->txr.skb[qca->txr.head]); in qcaspi_transmit()
311 qca->txr.skb[qca->txr.head] = NULL; in qcaspi_transmit()
312 qca->txr.size -= pkt_len; in qcaspi_transmit()
313 new_head = qca->txr.head + 1; in qcaspi_transmit()
314 if (new_head >= qca->txr.count) in qcaspi_transmit()
316 qca->txr.head = new_head; in qcaspi_transmit()
317 if (netif_queue_stopped(qca->net_dev)) in qcaspi_transmit()
318 netif_wake_queue(qca->net_dev); in qcaspi_transmit()
319 netif_tx_unlock_bh(qca->net_dev); in qcaspi_transmit()
326 qcaspi_receive(struct qcaspi *qca) in qcaspi_receive() argument
328 struct net_device *net_dev = qca->net_dev; in qcaspi_receive()
335 if (!qca->rx_skb) { in qcaspi_receive()
336 qca->rx_skb = netdev_alloc_skb_ip_align(net_dev, in qcaspi_receive()
339 if (!qca->rx_skb) { in qcaspi_receive()
341 qca->stats.out_of_mem++; in qcaspi_receive()
347 qcaspi_read_register(qca, SPI_REG_RDBUF_BYTE_AVA, &available); in qcaspi_receive()
356 qcaspi_write_register(qca, SPI_REG_BFR_SIZE, available); in qcaspi_receive()
358 if (qca->legacy_mode) in qcaspi_receive()
359 qcaspi_tx_cmd(qca, QCA7K_SPI_READ | QCA7K_SPI_EXTERNAL); in qcaspi_receive()
364 if (count > qca->burst_len) in qcaspi_receive()
365 count = qca->burst_len; in qcaspi_receive()
367 if (qca->legacy_mode) { in qcaspi_receive()
368 bytes_read = qcaspi_read_legacy(qca, qca->rx_buffer, in qcaspi_receive()
371 bytes_read = qcaspi_read_burst(qca, qca->rx_buffer, in qcaspi_receive()
381 qca->stats.read_err++; in qcaspi_receive()
385 cp = qca->rx_buffer; in qcaspi_receive()
387 while ((bytes_read--) && (qca->rx_skb)) { in qcaspi_receive()
390 retcode = qcafrm_fsm_decode(&qca->frm_handle, in qcaspi_receive()
391 qca->rx_skb->data, in qcaspi_receive()
392 skb_tailroom(qca->rx_skb), in qcaspi_receive()
410 qca->rx_skb->dev = qca->net_dev; in qcaspi_receive()
413 skb_put(qca->rx_skb, retcode); in qcaspi_receive()
414 qca->rx_skb->protocol = eth_type_trans( in qcaspi_receive()
415 qca->rx_skb, qca->rx_skb->dev); in qcaspi_receive()
416 qca->rx_skb->ip_summed = CHECKSUM_UNNECESSARY; in qcaspi_receive()
417 netif_rx_ni(qca->rx_skb); in qcaspi_receive()
418 qca->rx_skb = netdev_alloc_skb_ip_align(net_dev, in qcaspi_receive()
420 if (!qca->rx_skb) { in qcaspi_receive()
423 qca->stats.out_of_mem++; in qcaspi_receive()
451 qcaspi_flush_tx_ring(struct qcaspi *qca) in qcaspi_flush_tx_ring() argument
458 netif_tx_lock_bh(qca->net_dev); in qcaspi_flush_tx_ring()
460 if (qca->txr.skb[i]) { in qcaspi_flush_tx_ring()
461 dev_kfree_skb(qca->txr.skb[i]); in qcaspi_flush_tx_ring()
462 qca->txr.skb[i] = NULL; in qcaspi_flush_tx_ring()
463 qca->net_dev->stats.tx_dropped++; in qcaspi_flush_tx_ring()
466 qca->txr.tail = 0; in qcaspi_flush_tx_ring()
467 qca->txr.head = 0; in qcaspi_flush_tx_ring()
468 qca->txr.size = 0; in qcaspi_flush_tx_ring()
469 netif_tx_unlock_bh(qca->net_dev); in qcaspi_flush_tx_ring()
473 qcaspi_qca7k_sync(struct qcaspi *qca, int event) in qcaspi_qca7k_sync() argument
484 qcaspi_read_register(qca, SPI_REG_SIGNATURE, &signature); in qcaspi_qca7k_sync()
485 qcaspi_read_register(qca, SPI_REG_SIGNATURE, &signature); in qcaspi_qca7k_sync()
487 qca->sync = QCASPI_SYNC_UNKNOWN; in qcaspi_qca7k_sync()
488 netdev_dbg(qca->net_dev, "sync: got CPU on, but signature was invalid, restart\n"); in qcaspi_qca7k_sync()
491 qcaspi_read_register(qca, SPI_REG_WRBUF_SPC_AVA, in qcaspi_qca7k_sync()
494 netdev_dbg(qca->net_dev, "sync: got CPU on, but wrbuf not empty. reset!\n"); in qcaspi_qca7k_sync()
495 qca->sync = QCASPI_SYNC_UNKNOWN; in qcaspi_qca7k_sync()
497 netdev_dbg(qca->net_dev, "sync: got CPU on, now in sync\n"); in qcaspi_qca7k_sync()
498 qca->sync = QCASPI_SYNC_READY; in qcaspi_qca7k_sync()
504 switch (qca->sync) { in qcaspi_qca7k_sync()
507 qcaspi_read_register(qca, SPI_REG_SIGNATURE, &signature); in qcaspi_qca7k_sync()
509 qca->sync = QCASPI_SYNC_UNKNOWN; in qcaspi_qca7k_sync()
510 netdev_dbg(qca->net_dev, "sync: bad signature, restart\n"); in qcaspi_qca7k_sync()
517 qcaspi_read_register(qca, SPI_REG_SIGNATURE, &signature); in qcaspi_qca7k_sync()
519 netdev_dbg(qca->net_dev, "sync: could not read signature to reset device, retry.\n"); in qcaspi_qca7k_sync()
524 netdev_dbg(qca->net_dev, "sync: resetting device.\n"); in qcaspi_qca7k_sync()
525 qcaspi_read_register(qca, SPI_REG_SPI_CONFIG, &spi_config); in qcaspi_qca7k_sync()
527 qcaspi_write_register(qca, SPI_REG_SPI_CONFIG, spi_config); in qcaspi_qca7k_sync()
529 qca->sync = QCASPI_SYNC_RESET; in qcaspi_qca7k_sync()
530 qca->stats.trig_reset++; in qcaspi_qca7k_sync()
535 netdev_dbg(qca->net_dev, "sync: waiting for CPU on, count %u.\n", in qcaspi_qca7k_sync()
539 qca->sync = QCASPI_SYNC_UNKNOWN; in qcaspi_qca7k_sync()
540 qca->stats.reset_timeout++; in qcaspi_qca7k_sync()
541 netdev_dbg(qca->net_dev, "sync: reset timeout, restarting process.\n"); in qcaspi_qca7k_sync()
550 struct qcaspi *qca = data; in qcaspi_spi_thread() local
553 netdev_info(qca->net_dev, "SPI thread created\n"); in qcaspi_spi_thread()
556 if ((qca->intr_req == qca->intr_svc) && in qcaspi_spi_thread()
557 (qca->txr.skb[qca->txr.head] == NULL) && in qcaspi_spi_thread()
558 (qca->sync == QCASPI_SYNC_READY)) in qcaspi_spi_thread()
563 netdev_dbg(qca->net_dev, "have work to do. int: %d, tx_skb: %p\n", in qcaspi_spi_thread()
564 qca->intr_req - qca->intr_svc, in qcaspi_spi_thread()
565 qca->txr.skb[qca->txr.head]); in qcaspi_spi_thread()
567 qcaspi_qca7k_sync(qca, QCASPI_EVENT_UPDATE); in qcaspi_spi_thread()
569 if (qca->sync != QCASPI_SYNC_READY) { in qcaspi_spi_thread()
570 netdev_dbg(qca->net_dev, "sync: not ready %u, turn off carrier and flush\n", in qcaspi_spi_thread()
571 (unsigned int)qca->sync); in qcaspi_spi_thread()
572 netif_stop_queue(qca->net_dev); in qcaspi_spi_thread()
573 netif_carrier_off(qca->net_dev); in qcaspi_spi_thread()
574 qcaspi_flush_tx_ring(qca); in qcaspi_spi_thread()
578 if (qca->intr_svc != qca->intr_req) { in qcaspi_spi_thread()
579 qca->intr_svc = qca->intr_req; in qcaspi_spi_thread()
580 start_spi_intr_handling(qca, &intr_cause); in qcaspi_spi_thread()
583 qcaspi_qca7k_sync(qca, QCASPI_EVENT_CPUON); in qcaspi_spi_thread()
586 if (qca->sync != QCASPI_SYNC_READY) in qcaspi_spi_thread()
589 qca->stats.device_reset++; in qcaspi_spi_thread()
590 netif_wake_queue(qca->net_dev); in qcaspi_spi_thread()
591 netif_carrier_on(qca->net_dev); in qcaspi_spi_thread()
596 netdev_dbg(qca->net_dev, "===> rdbuf error!\n"); in qcaspi_spi_thread()
597 qca->stats.read_buf_err++; in qcaspi_spi_thread()
598 qca->sync = QCASPI_SYNC_UNKNOWN; in qcaspi_spi_thread()
604 netdev_dbg(qca->net_dev, "===> wrbuf error!\n"); in qcaspi_spi_thread()
605 qca->stats.write_buf_err++; in qcaspi_spi_thread()
606 qca->sync = QCASPI_SYNC_UNKNOWN; in qcaspi_spi_thread()
613 if (qca->sync == QCASPI_SYNC_READY) { in qcaspi_spi_thread()
615 qcaspi_receive(qca); in qcaspi_spi_thread()
618 end_spi_intr_handling(qca, intr_cause); in qcaspi_spi_thread()
621 if (qca->sync == QCASPI_SYNC_READY) in qcaspi_spi_thread()
622 qcaspi_transmit(qca); in qcaspi_spi_thread()
625 netdev_info(qca->net_dev, "SPI thread exit\n"); in qcaspi_spi_thread()
633 struct qcaspi *qca = data; in qcaspi_intr_handler() local
635 qca->intr_req++; in qcaspi_intr_handler()
636 if (qca->spi_thread && in qcaspi_intr_handler()
637 qca->spi_thread->state != TASK_RUNNING) in qcaspi_intr_handler()
638 wake_up_process(qca->spi_thread); in qcaspi_intr_handler()
646 struct qcaspi *qca = netdev_priv(dev); in qcaspi_netdev_open() local
649 if (!qca) in qcaspi_netdev_open()
652 qca->intr_req = 1; in qcaspi_netdev_open()
653 qca->intr_svc = 0; in qcaspi_netdev_open()
654 qca->sync = QCASPI_SYNC_UNKNOWN; in qcaspi_netdev_open()
655 qcafrm_fsm_init_spi(&qca->frm_handle); in qcaspi_netdev_open()
657 qca->spi_thread = kthread_run((void *)qcaspi_spi_thread, in qcaspi_netdev_open()
658 qca, "%s", dev->name); in qcaspi_netdev_open()
660 if (IS_ERR(qca->spi_thread)) { in qcaspi_netdev_open()
663 return PTR_ERR(qca->spi_thread); in qcaspi_netdev_open()
666 ret = request_irq(qca->spi_dev->irq, qcaspi_intr_handler, 0, in qcaspi_netdev_open()
667 dev->name, qca); in qcaspi_netdev_open()
670 QCASPI_DRV_NAME, qca->spi_dev->irq, ret); in qcaspi_netdev_open()
671 kthread_stop(qca->spi_thread); in qcaspi_netdev_open()
683 struct qcaspi *qca = netdev_priv(dev); in qcaspi_netdev_close() local
687 qcaspi_write_register(qca, SPI_REG_INTR_ENABLE, 0); in qcaspi_netdev_close()
688 free_irq(qca->spi_dev->irq, qca); in qcaspi_netdev_close()
690 kthread_stop(qca->spi_thread); in qcaspi_netdev_close()
691 qca->spi_thread = NULL; in qcaspi_netdev_close()
692 qcaspi_flush_tx_ring(qca); in qcaspi_netdev_close()
702 struct qcaspi *qca = netdev_priv(dev); in qcaspi_netdev_xmit() local
710 if (qca->txr.skb[qca->txr.tail]) { in qcaspi_netdev_xmit()
711 netdev_warn(qca->net_dev, "queue was unexpectedly full!\n"); in qcaspi_netdev_xmit()
712 netif_stop_queue(qca->net_dev); in qcaspi_netdev_xmit()
713 qca->stats.ring_full++; in qcaspi_netdev_xmit()
722 qca->stats.out_of_mem++; in qcaspi_netdev_xmit()
741 netdev_dbg(qca->net_dev, "Tx-ing packet: Size: 0x%08x\n", in qcaspi_netdev_xmit()
744 qca->txr.size += skb->len + QCASPI_HW_PKT_LEN; in qcaspi_netdev_xmit()
746 new_tail = qca->txr.tail + 1; in qcaspi_netdev_xmit()
747 if (new_tail >= qca->txr.count) in qcaspi_netdev_xmit()
750 qca->txr.skb[qca->txr.tail] = skb; in qcaspi_netdev_xmit()
751 qca->txr.tail = new_tail; in qcaspi_netdev_xmit()
753 if (!qcaspi_tx_ring_has_space(&qca->txr)) { in qcaspi_netdev_xmit()
754 netif_stop_queue(qca->net_dev); in qcaspi_netdev_xmit()
755 qca->stats.ring_full++; in qcaspi_netdev_xmit()
760 if (qca->spi_thread && in qcaspi_netdev_xmit()
761 qca->spi_thread->state != TASK_RUNNING) in qcaspi_netdev_xmit()
762 wake_up_process(qca->spi_thread); in qcaspi_netdev_xmit()
770 struct qcaspi *qca = netdev_priv(dev); in qcaspi_netdev_tx_timeout() local
772 netdev_info(qca->net_dev, "Transmit timeout at %ld, latency %ld\n", in qcaspi_netdev_tx_timeout()
774 qca->net_dev->stats.tx_errors++; in qcaspi_netdev_tx_timeout()
776 qca->sync = QCASPI_SYNC_UNKNOWN; in qcaspi_netdev_tx_timeout()
778 if (qca->spi_thread) in qcaspi_netdev_tx_timeout()
779 wake_up_process(qca->spi_thread); in qcaspi_netdev_tx_timeout()
785 struct qcaspi *qca = netdev_priv(dev); in qcaspi_netdev_init() local
789 qca->clkspeed = qcaspi_clkspeed; in qcaspi_netdev_init()
790 qca->burst_len = qcaspi_burst_len; in qcaspi_netdev_init()
791 qca->spi_thread = NULL; in qcaspi_netdev_init()
792 qca->buffer_size = (dev->mtu + VLAN_ETH_HLEN + QCAFRM_HEADER_LEN + in qcaspi_netdev_init()
795 memset(&qca->stats, 0, sizeof(struct qcaspi_stats)); in qcaspi_netdev_init()
797 qca->rx_buffer = kmalloc(qca->buffer_size, GFP_KERNEL); in qcaspi_netdev_init()
798 if (!qca->rx_buffer) in qcaspi_netdev_init()
801 qca->rx_skb = netdev_alloc_skb_ip_align(dev, qca->net_dev->mtu + in qcaspi_netdev_init()
803 if (!qca->rx_skb) { in qcaspi_netdev_init()
804 kfree(qca->rx_buffer); in qcaspi_netdev_init()
805 netdev_info(qca->net_dev, "Failed to allocate RX sk_buff.\n"); in qcaspi_netdev_init()
815 struct qcaspi *qca = netdev_priv(dev); in qcaspi_netdev_uninit() local
817 kfree(qca->rx_buffer); in qcaspi_netdev_uninit()
818 qca->buffer_size = 0; in qcaspi_netdev_uninit()
819 if (qca->rx_skb) in qcaspi_netdev_uninit()
820 dev_kfree_skb(qca->rx_skb); in qcaspi_netdev_uninit()
837 struct qcaspi *qca = NULL; in qcaspi_netdev_setup() local
849 qca = netdev_priv(dev); in qcaspi_netdev_setup()
850 memset(qca, 0, sizeof(struct qcaspi)); in qcaspi_netdev_setup()
852 memset(&qca->txr, 0, sizeof(qca->txr)); in qcaspi_netdev_setup()
853 qca->txr.count = TX_RING_MAX_LEN; in qcaspi_netdev_setup()
865 struct qcaspi *qca = NULL; in qca_spi_probe() local
927 qca = netdev_priv(qcaspi_devs); in qca_spi_probe()
928 if (!qca) { in qca_spi_probe()
933 qca->net_dev = qcaspi_devs; in qca_spi_probe()
934 qca->spi_dev = spi; in qca_spi_probe()
935 qca->legacy_mode = legacy_mode; in qca_spi_probe()
942 ether_addr_copy(qca->net_dev->dev_addr, mac); in qca_spi_probe()
944 if (!is_valid_ether_addr(qca->net_dev->dev_addr)) { in qca_spi_probe()
945 eth_hw_addr_random(qca->net_dev); in qca_spi_probe()
947 qca->net_dev->dev_addr); in qca_spi_probe()
950 netif_carrier_off(qca->net_dev); in qca_spi_probe()
953 qcaspi_read_register(qca, SPI_REG_SIGNATURE, &signature); in qca_spi_probe()
954 qcaspi_read_register(qca, SPI_REG_SIGNATURE, &signature); in qca_spi_probe()
971 qcaspi_init_device_debugfs(qca); in qca_spi_probe()
980 struct qcaspi *qca = netdev_priv(qcaspi_devs); in qca_spi_remove() local
982 qcaspi_remove_device_debugfs(qca); in qca_spi_remove()