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Message-ID: <ZlrkGY15wCQlY1YV@lore-desk>
Date: Sat, 1 Jun 2024 11:04:25 +0200
From: Lorenzo Bianconi <lorenzo@...nel.org>
To: Subbaraya Sundeep Bhatta <sbhatta@...vell.com>
Cc: "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
"nbd@....name" <nbd@....name>,
"lorenzo.bianconi83@...il.com" <lorenzo.bianconi83@...il.com>,
"davem@...emloft.net" <davem@...emloft.net>,
"edumazet@...gle.com" <edumazet@...gle.com>,
"kuba@...nel.org" <kuba@...nel.org>,
"pabeni@...hat.com" <pabeni@...hat.com>,
"conor@...nel.org" <conor@...nel.org>,
"linux-arm-kernel@...ts.infradead.org" <linux-arm-kernel@...ts.infradead.org>,
"robh+dt@...nel.org" <robh+dt@...nel.org>,
"krzysztof.kozlowski+dt@...aro.org" <krzysztof.kozlowski+dt@...aro.org>,
"conor+dt@...nel.org" <conor+dt@...nel.org>,
"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
"catalin.marinas@....com" <catalin.marinas@....com>,
"will@...nel.org" <will@...nel.org>,
"upstream@...oha.com" <upstream@...oha.com>,
"angelogioacchino.delregno@...labora.com" <angelogioacchino.delregno@...labora.com>,
"benjamin.larsson@...exis.eu" <benjamin.larsson@...exis.eu>
Subject: Re: [EXTERNAL] [PATCH net-next 3/3] net: airoha: Introduce ethernet
support for EN7581 SoC
[...]
> >+static void airoha_set_port_fwd_cfg(struct airoha_eth *eth, u32 addr, u32 val)
> >+{
> >+ airoha_fe_rmw(eth, addr, GDM1_OCFQ_MASK,
> >+ FIELD_PREP(GDM1_OCFQ_MASK, val));
>
> Not sure this is problem of my email client, but none of the functions args are aligning with above parenthesis
> airoha_fe_rmw(eth, addr, GDM1_OCFQ_MASK,
> FIELD_PREP(GDM1_OCFQ_MASK, val));
Hi Sundeep,
this is fine in my editor (vim)
>
> >+ airoha_fe_rmw(eth, addr, GDM1_MCFQ_MASK,
> >+ FIELD_PREP(GDM1_MCFQ_MASK, val));
> >+ airoha_fe_rmw(eth, addr, GDM1_BCFQ_MASK,
> >+ FIELD_PREP(GDM1_BCFQ_MASK, val));
> >+ airoha_fe_rmw(eth, addr, GDM1_UCFQ_MASK,
> >+ FIELD_PREP(GDM1_UCFQ_MASK, val));
> >+}
> >+
[...]
> >+static int airoha_set_gdma_ports(struct airoha_eth *eth, bool enable)
> >+{
> >+ const int port_list[] = { 0, 1, 2, 4 };
> >+ int i;
> >+
> >+ for (i = 0; i < ARRAY_SIZE(port_list); i++) {
> >+ int err;
> >+
> >+ err = airoha_set_gdma_port(eth, port_list[i], enable);
> >+ if (err)
> >+ return err;
>
> Say setting port 3 failed and returned from this function then is it okay to leave some ports(0, 1 and 2) as set?
> if (err)
> goto exit;
> >+ }
> >+
> >+ return 0;
>
> exit:
> while (i--)
> airoha_set_gdma_port(eth, port_list[i], false);
>
> return err;
ack, I do not think it will make any difference, but I will fix it.
>
> >+}
> >+
> >+static void airoha_fe_maccr_init(struct airoha_eth *eth)
> >+{
[...]
> >+}
> >+
> >+static int airoha_qdma_fill_rx_queue(struct airoha_queue *q)
> >+{
> >+ struct airoha_eth *eth = q->eth;
> >+ struct device *dev = eth->net_dev->dev.parent;
> Follow reverse xmas tree order please in entire driver.
> Apart from minor nits driver looks good to me.
I usually respect reverse xmas tree order but I would say there is a dependency
here from eth pointer (I would avoid to define it after dev pointer).
Regards,
Lorenzo
>
> Thanks,
> Sundeep
> >+ int qid = q - ð->q_rx[0], nframes = 0;
> >+
> >+ spin_lock_bh(&q->lock);
> >+ while (q->queued < q->ndesc - 1) {
> >+ struct airoha_queue_entry *e = &q->entry[q->head];
> >+ struct airoha_qdma_desc *desc = &q->desc[q->head];
> >+ enum dma_data_direction dir;
> >+ struct page *page;
> >+ int offset;
> >+ u32 val;
> >+
> >+ page = page_pool_dev_alloc_frag(q->page_pool, &offset,
> >+ q->buf_size);
> >+ if (!page)
> >+ break;
> >+
> >+ q->head = (q->head + 1) % q->ndesc;
> >+ q->queued++;
> >+ nframes++;
> >+
> >+ e->buf = page_address(page) + offset;
> >+ e->dma_addr = page_pool_get_dma_addr(page) + offset;
> >+ e->dma_len = SKB_WITH_OVERHEAD(q->buf_size);
> >+
> >+ dir = page_pool_get_dma_dir(q->page_pool);
> >+ dma_sync_single_for_device(dev, e->dma_addr, e->dma_len, dir);
> >+
> >+ val = FIELD_PREP(QDMA_DESC_LEN_MASK, e->dma_len);
> >+ WRITE_ONCE(desc->ctrl, cpu_to_le32(val));
> >+ WRITE_ONCE(desc->addr, cpu_to_le32(e->dma_addr));
> >+ val = FIELD_PREP(QDMA_DESC_NEXT_ID_MASK, q->head);
> >+ WRITE_ONCE(desc->data, cpu_to_le32(val));
> >+ WRITE_ONCE(desc->msg0, 0);
> >+ WRITE_ONCE(desc->msg1, 0);
> >+ WRITE_ONCE(desc->msg2, 0);
> >+ WRITE_ONCE(desc->msg3, 0);
> >+
> >+ wmb();
> >+ airoha_qdma_rmw(eth, REG_RX_CPU_IDX(qid),
> >RX_RING_CPU_IDX_MASK,
> >+ FIELD_PREP(RX_RING_CPU_IDX_MASK, q-
> >>head));
> >+ }
> >+ spin_unlock_bh(&q->lock);
> >+
> >+ return nframes;
> >+}
> >+
> >+static int airoha_qdma_rx_process(struct airoha_queue *q, int budget)
> >+{
> >+ struct airoha_eth *eth = q->eth;
> >+ struct device *dev = eth->net_dev->dev.parent;
> >+ int done = 0, qid = q - ð->q_rx[0];
> >+
> >+ spin_lock_bh(&q->lock);
> >+ while (done < budget) {
> >+ struct airoha_queue_entry *e = &q->entry[q->tail];
> >+ struct airoha_qdma_desc *desc = &q->desc[q->tail];
> >+ dma_addr_t dma_addr = le32_to_cpu(desc->addr);
> >+ u32 desc_ctrl = le32_to_cpu(desc->ctrl);
> >+ struct sk_buff *skb;
> >+ int len;
> >+
> >+ if (!(desc_ctrl & QDMA_DESC_DONE_MASK))
> >+ break;
> >+
> >+ len = FIELD_GET(QDMA_DESC_LEN_MASK, desc_ctrl);
> >+ if (!dma_addr || !len)
> >+ break;
> >+
> >+ q->tail = (q->tail + 1) % q->ndesc;
> >+ q->queued--;
> >+
> >+ dma_sync_single_for_cpu(dev, dma_addr,
> >+ SKB_WITH_OVERHEAD(q->buf_size),
> >+ page_pool_get_dma_dir(q->page_pool));
> >+
> >+ skb = napi_build_skb(e->buf, q->buf_size);
> >+ if (!skb) {
> >+ page_pool_put_full_page(q->page_pool,
> >+ virt_to_head_page(e->buf),
> >+ true);
> >+ continue;
> >+ }
> >+
> >+ skb_reserve(skb, 2);
> >+ __skb_put(skb, len);
> >+
> >+ skb_mark_for_recycle(skb);
> >+ skb->dev = eth->net_dev;
> >+ skb->protocol = eth_type_trans(skb, eth->net_dev);
> >+ skb->ip_summed = CHECKSUM_UNNECESSARY;
> >+ skb_record_rx_queue(skb, qid);
> >+ napi_gro_receive(&q->napi, skb);
> >+
> >+ done++;
> >+ }
> >+ spin_unlock_bh(&q->lock);
> >+
> >+ airoha_qdma_fill_rx_queue(q);
> >+
> >+ return done;
> >+}
> >+
> >+static int airoha_qdma_rx_napi_poll(struct napi_struct *napi, int budget)
> >+{
> >+ struct airoha_queue *q = container_of(napi, struct airoha_queue, napi);
> >+ struct airoha_eth *eth = q->eth;
> >+ int cur, done = 0;
> >+
> >+ do {
> >+ cur = airoha_qdma_rx_process(q, budget - done);
> >+ done += cur;
> >+ } while (cur && done < budget);
> >+
> >+ if (done < budget && napi_complete(napi))
> >+ airoha_qdma_irq_enable(eth, QDMA_INT_REG_IDX1,
> >+ RX_DONE_INT_MASK);
> >+
> >+ return done;
> >+}
> >+
> >+static int airoha_qdma_init_rx_queue(struct airoha_eth *eth,
> >+ struct airoha_queue *q, int ndesc)
> >+{
> >+ struct device *dev = eth->net_dev->dev.parent;
> >+ struct page_pool_params pp_params = {
> >+ .order = 0,
> >+ .pool_size = 256,
> >+ .flags = PP_FLAG_DMA_MAP | PP_FLAG_DMA_SYNC_DEV,
> >+ .dma_dir = DMA_FROM_DEVICE,
> >+ .max_len = PAGE_SIZE,
> >+ .nid = NUMA_NO_NODE,
> >+ .dev = dev,
> >+ .napi = &q->napi,
> >+ };
> >+ int qid = q - ð->q_rx[0], thr;
> >+ dma_addr_t dma_addr;
> >+
> >+ spin_lock_init(&q->lock);
> >+ q->buf_size = PAGE_SIZE / 2;
> >+ q->ndesc = ndesc;
> >+ q->eth = eth;
> >+
> >+ q->entry = devm_kzalloc(dev, q->ndesc * sizeof(*q->entry),
> >+ GFP_KERNEL);
> >+ if (!q->entry)
> >+ return -ENOMEM;
> >+
> >+ q->page_pool = page_pool_create(&pp_params);
> >+ if (IS_ERR(q->page_pool)) {
> >+ int err = PTR_ERR(q->page_pool);
> >+
> >+ q->page_pool = NULL;
> >+ return err;
> >+ }
> >+
> >+ q->desc = dmam_alloc_coherent(dev, q->ndesc * sizeof(*q->desc),
> >+ &dma_addr, GFP_KERNEL);
> >+ if (!q->desc)
> >+ return -ENOMEM;
> >+
> >+ netif_napi_add(eth->net_dev, &q->napi, airoha_qdma_rx_napi_poll);
> >+
> >+ airoha_qdma_wr(eth, REG_RX_RING_BASE(qid), dma_addr);
> >+ airoha_qdma_rmw(eth, REG_RX_RING_SIZE(qid), RX_RING_SIZE_MASK,
> >+ FIELD_PREP(RX_RING_SIZE_MASK, ndesc));
> >+
> >+ thr = clamp(ndesc >> 3, 1, 32);
> >+ airoha_qdma_rmw(eth, REG_RX_RING_SIZE(qid), RX_RING_THR_MASK,
> >+ FIELD_PREP(RX_RING_THR_MASK, thr));
> >+ airoha_qdma_rmw(eth, REG_RX_DMA_IDX(qid),
> >RX_RING_DMA_IDX_MASK,
> >+ FIELD_PREP(RX_RING_DMA_IDX_MASK, q->head));
> >+
> >+ airoha_qdma_fill_rx_queue(q);
> >+
> >+ return 0;
> >+}
> >+
> >+static void airoha_qdma_clenaup_rx_queue(struct airoha_queue *q)
> >+{
> >+ struct airoha_eth *eth = q->eth;
> >+ struct device *dev = eth->net_dev->dev.parent;
> >+
> >+ spin_lock_bh(&q->lock);
> >+
> >+ while (q->queued) {
> >+ struct airoha_queue_entry *e = &q->entry[q->tail];
> >+ struct page *page = virt_to_head_page(e->buf);
> >+ enum dma_data_direction dir;
> >+
> >+ dir = page_pool_get_dma_dir(q->page_pool);
> >+ dma_sync_single_for_cpu(dev, e->dma_addr, e->dma_len, dir);
> >+ page_pool_put_full_page(q->page_pool, page, false);
> >+ q->tail = (q->tail + 1) % q->ndesc;
> >+ q->queued--;
> >+ }
> >+
> >+ spin_unlock_bh(&q->lock);
> >+}
> >+
> >+static int airoha_qdma_init_rx(struct airoha_eth *eth)
> >+{
> >+ int i;
> >+
> >+ for (i = 0; i < ARRAY_SIZE(eth->q_rx); i++) {
> >+ int err;
> >+
> >+ if (!(RX_DONE_INT_MASK & BIT(i))) {
> >+ /* rx-queue not binded to irq */
> >+ continue;
> >+ }
> >+
> >+ err = airoha_qdma_init_rx_queue(eth, ð->q_rx[i],
> >+ RX_DSCP_NUM(i));
> >+ if (err)
> >+ return err;
> >+ }
> >+
> >+ return 0;
> >+}
> >+
> >+static int airoha_qdma_tx_napi_poll(struct napi_struct *napi, int budget)
> >+{
> >+ struct airoha_tx_irq_queue *irq_q;
> >+ struct airoha_eth *eth;
> >+ struct device *dev;
> >+ int id, done = 0;
> >+
> >+ irq_q = container_of(napi, struct airoha_tx_irq_queue, napi);
> >+ eth = irq_q->eth;
> >+ id = irq_q - ð->q_tx_irq[0];
> >+ dev = eth->net_dev->dev.parent;
> >+
> >+ while (irq_q->queued > 0 && done < budget) {
> >+ u32 qid, last, val = irq_q->q[irq_q->head];
> >+ struct airoha_queue *q;
> >+
> >+ if (val == 0xff)
> >+ break;
> >+
> >+ irq_q->q[irq_q->head] = 0xff; /* mark as done */
> >+ irq_q->head = (irq_q->head + 1) % irq_q->size;
> >+ irq_q->queued--;
> >+ done++;
> >+
> >+ last = FIELD_GET(IRQ_DESC_IDX_MASK, val);
> >+ qid = FIELD_GET(IRQ_RING_IDX_MASK, val);
> >+
> >+ if (qid >= ARRAY_SIZE(eth->q_tx))
> >+ continue;
> >+
> >+ q = ð->q_tx[qid];
> >+ spin_lock_bh(&q->lock);
> >+
> >+ while (q->queued > 0) {
> >+ struct airoha_qdma_desc *desc = &q->desc[q->tail];
> >+ struct airoha_queue_entry *e = &q->entry[q->tail];
> >+ u32 desc_ctrl = le32_to_cpu(desc->ctrl);
> >+ u16 index = q->tail;
> >+
> >+ if (!(desc_ctrl & QDMA_DESC_DONE_MASK) &&
> >+ !(desc_ctrl & QDMA_DESC_DROP_MASK))
> >+ break;
> >+
> >+ q->tail = (q->tail + 1) % q->ndesc;
> >+ q->queued--;
> >+
> >+ dma_unmap_single(dev, e->dma_addr, e->dma_len,
> >+ DMA_TO_DEVICE);
> >+ dev_kfree_skb_any(e->skb);
> >+ e->skb = NULL;
> >+
> >+ WRITE_ONCE(desc->msg0, 0);
> >+ WRITE_ONCE(desc->msg1, 0);
> >+
> >+ if (index == last)
> >+ break;
> >+ }
> >+
> >+ if (__netif_subqueue_stopped(eth->net_dev, qid) &&
> >+ q->queued + q->free_thr < q->ndesc)
> >+ netif_wake_subqueue(eth->net_dev, qid);
> >+
> >+ spin_unlock_bh(&q->lock);
> >+ }
> >+
> >+ if (done) {
> >+ int i, len = done >> 7;
> >+
> >+ for (i = 0; i < len; i++)
> >+ airoha_qdma_rmw(eth, REG_IRQ_CLEAR_LEN(id),
> >+ IRQ_CLEAR_LEN_MASK, 0x80);
> >+ airoha_qdma_rmw(eth, REG_IRQ_CLEAR_LEN(id),
> >+ IRQ_CLEAR_LEN_MASK, (done & 0x7f));
> >+ }
> >+
> >+ if (done < budget && napi_complete(napi))
> >+ airoha_qdma_irq_enable(eth, QDMA_INT_REG_IDX0,
> >+ TX_DONE_INT_MASK(id));
> >+
> >+ return done;
> >+}
> >+
> >+static int airoha_qdma_init_tx_queue(struct airoha_eth *eth,
> >+ struct airoha_queue *q, int size)
> >+{
> >+ struct device *dev = eth->net_dev->dev.parent;
> >+ int i, qid = q - ð->q_tx[0];
> >+ dma_addr_t dma_addr;
> >+
> >+ spin_lock_init(&q->lock);
> >+ q->ndesc = size;
> >+ q->eth = eth;
> >+ q->free_thr = MAX_SKB_FRAGS;
> >+
> >+ q->entry = devm_kzalloc(dev, q->ndesc * sizeof(*q->entry),
> >+ GFP_KERNEL);
> >+ if (!q->entry)
> >+ return -ENOMEM;
> >+
> >+ q->desc = dmam_alloc_coherent(dev, q->ndesc * sizeof(*q->desc),
> >+ &dma_addr, GFP_KERNEL);
> >+ if (!q->desc)
> >+ return -ENOMEM;
> >+
> >+ for (i = 0; i < q->ndesc; i++) {
> >+ u32 val;
> >+
> >+ val = FIELD_PREP(QDMA_DESC_DONE_MASK, 1);
> >+ WRITE_ONCE(q->desc[i].ctrl, cpu_to_le32(val));
> >+ }
> >+
> >+ airoha_qdma_wr(eth, REG_TX_RING_BASE(qid), dma_addr);
> >+ airoha_qdma_rmw(eth, REG_TX_CPU_IDX(qid),
> >TX_RING_CPU_IDX_MASK,
> >+ FIELD_PREP(TX_RING_CPU_IDX_MASK, q->head));
> >+ airoha_qdma_rmw(eth, REG_TX_DMA_IDX(qid),
> >TX_RING_DMA_IDX_MASK,
> >+ FIELD_PREP(TX_RING_DMA_IDX_MASK, q->head));
> >+
> >+ return 0;
> >+}
> >+
> >+static int airoha_qdma_tx_irq_init(struct airoha_eth *eth,
> >+ struct airoha_tx_irq_queue *irq_q,
> >+ int size)
> >+{
> >+ struct device *dev = eth->net_dev->dev.parent;
> >+ int id = irq_q - ð->q_tx_irq[0];
> >+ dma_addr_t dma_addr;
> >+
> >+ netif_napi_add(eth->net_dev, &irq_q->napi, airoha_qdma_tx_napi_poll);
> >+ irq_q->q = dmam_alloc_coherent(dev, size * sizeof(u32), &dma_addr,
> >+ GFP_KERNEL);
> >+ if (!irq_q->q)
> >+ return -ENOMEM;
> >+
> >+ memset(irq_q->q, 0xff, size * sizeof(u32));
> >+ irq_q->size = size;
> >+ irq_q->eth = eth;
> >+
> >+ airoha_qdma_wr(eth, REG_TX_IRQ_BASE(id), dma_addr);
> >+ airoha_qdma_rmw(eth, REG_TX_IRQ_CFG(id), TX_IRQ_DEPTH_MASK,
> >+ FIELD_PREP(TX_IRQ_DEPTH_MASK, size));
> >+ airoha_qdma_rmw(eth, REG_TX_IRQ_CFG(id), TX_IRQ_THR_MASK,
> >+ FIELD_PREP(TX_IRQ_THR_MASK, 32));
> >+
> >+ return 0;
> >+}
> >+
> >+static int airoha_qdma_init_tx(struct airoha_eth *eth)
> >+{
> >+ int i, err;
> >+
> >+ for (i = 0; i < ARRAY_SIZE(eth->q_tx_irq); i++) {
> >+ err = airoha_qdma_tx_irq_init(eth, ð->q_tx_irq[i],
> >+ IRQ_QUEUE_LEN(i));
> >+ if (err)
> >+ return err;
> >+ }
> >+
> >+ for (i = 0; i < ARRAY_SIZE(eth->q_tx); i++) {
> >+ err = airoha_qdma_init_tx_queue(eth, ð->q_tx[i],
> >+ TX_DSCP_NUM);
> >+ if (err)
> >+ return err;
> >+ }
> >+
> >+ return 0;
> >+}
> >+
> >+static void airoha_qdma_clenaup_tx_queue(struct airoha_queue *q)
> >+{
> >+ struct airoha_eth *eth = q->eth;
> >+ struct device *dev = eth->net_dev->dev.parent;
> >+
> >+ spin_lock_bh(&q->lock);
> >+
> >+ while (q->queued) {
> >+ struct airoha_queue_entry *e = &q->entry[q->tail];
> >+
> >+ dma_unmap_single(dev, e->dma_addr, e->dma_len,
> >DMA_TO_DEVICE);
> >+ dev_kfree_skb_any(e->skb);
> >+ e->skb = NULL;
> >+
> >+ q->tail = (q->tail + 1) % q->ndesc;
> >+ q->queued--;
> >+ }
> >+
> >+ spin_unlock_bh(&q->lock);
> >+}
> >+
> >+static int airoha_qdma_init_hfwd_queues(struct airoha_eth *eth)
> >+{
> >+ struct device *dev = eth->net_dev->dev.parent;
> >+ dma_addr_t dma_addr;
> >+ u32 status;
> >+ int size;
> >+
> >+ size = HW_DSCP_NUM * sizeof(struct airoha_qdma_fwd_desc);
> >+ eth->hfwd.desc = dmam_alloc_coherent(dev, size, &dma_addr,
> >+ GFP_KERNEL);
> >+ if (!eth->hfwd.desc)
> >+ return -ENOMEM;
> >+
> >+ airoha_qdma_wr(eth, REG_FWD_DSCP_BASE, dma_addr);
> >+
> >+ size = AIROHA_MAX_PACKET_SIZE * HW_DSCP_NUM;
> >+ eth->hfwd.q = dmam_alloc_coherent(dev, size, &dma_addr,
> >GFP_KERNEL);
> >+ if (!eth->hfwd.q)
> >+ return -ENOMEM;
> >+
> >+ airoha_qdma_wr(eth, REG_FWD_BUF_BASE, dma_addr);
> >+
> >+ airoha_qdma_rmw(eth, REG_HW_FWD_DSCP_CFG,
> >+ HW_FWD_DSCP_PAYLOAD_SIZE_MASK,
> >+ FIELD_PREP(HW_FWD_DSCP_PAYLOAD_SIZE_MASK, 0));
> >+ airoha_qdma_rmw(eth, REG_FWD_DSCP_LOW_THR,
> >FWD_DSCP_LOW_THR_MASK,
> >+ FIELD_PREP(FWD_DSCP_LOW_THR_MASK, 128));
> >+ airoha_qdma_rmw(eth, REG_LMGR_INIT_CFG,
> >+ LMGR_INIT_START | LMGR_SRAM_MODE_MASK |
> >+ HW_FWD_DESC_NUM_MASK,
> >+ FIELD_PREP(HW_FWD_DESC_NUM_MASK,
> >HW_DSCP_NUM) |
> >+ LMGR_INIT_START);
> >+
> >+ return read_poll_timeout(airoha_qdma_rr, status,
> >+ !(status & LMGR_INIT_START),
> >USEC_PER_MSEC,
> >+ 30 * USEC_PER_MSEC, true, eth,
> >+ REG_LMGR_INIT_CFG);
> >+}
> >+
> >+static void airoha_qdma_init_qos(struct airoha_eth *eth)
> >+{
> >+ airoha_qdma_clear(eth, REG_TXWRR_MODE_CFG,
> >TWRR_WEIGHT_SCALE_MASK);
> >+ airoha_qdma_set(eth, REG_TXWRR_MODE_CFG,
> >TWRR_WEIGHT_BASE_MASK);
> >+
> >+ airoha_qdma_clear(eth, REG_PSE_BUF_USAGE_CFG,
> >+ PSE_BUF_ESTIMATE_EN_MASK);
> >+
> >+ airoha_qdma_set(eth, REG_EGRESS_RATE_METER_CFG,
> >+ EGRESS_RATE_METER_EN_MASK |
> >+ EGRESS_RATE_METER_EQ_RATE_EN_MASK);
> >+ /* 2047us x 31 = 63.457ms */
> >+ airoha_qdma_rmw(eth, REG_EGRESS_RATE_METER_CFG,
> >+ EGRESS_RATE_METER_WINDOW_SZ_MASK,
> >+ FIELD_PREP(EGRESS_RATE_METER_WINDOW_SZ_MASK,
> >0x1f));
> >+ airoha_qdma_rmw(eth, REG_EGRESS_RATE_METER_CFG,
> >+ EGRESS_RATE_METER_TIMESLICE_MASK,
> >+ FIELD_PREP(EGRESS_RATE_METER_TIMESLICE_MASK,
> >0x7ff));
> >+
> >+ /* ratelimit init */
> >+ airoha_qdma_set(eth, REG_GLB_TRTCM_CFG, GLB_TRTCM_EN_MASK);
> >+ airoha_qdma_rmw(eth, REG_GLB_TRTCM_CFG, GLB_FAST_TICK_MASK,
> >+ FIELD_PREP(GLB_FAST_TICK_MASK, 25)); /* fast-tick
> >25us */
> >+ airoha_qdma_rmw(eth, REG_GLB_TRTCM_CFG,
> >GLB_SLOW_TICK_RATIO_MASK,
> >+ FIELD_PREP(GLB_SLOW_TICK_RATIO_MASK, 40));
> >+
> >+ airoha_qdma_set(eth, REG_EGRESS_TRTCM_CFG,
> >EGRESS_TRTCM_EN_MASK);
> >+ airoha_qdma_rmw(eth, REG_EGRESS_TRTCM_CFG,
> >EGRESS_FAST_TICK_MASK,
> >+ FIELD_PREP(EGRESS_FAST_TICK_MASK, 25));
> >+ airoha_qdma_rmw(eth, REG_EGRESS_TRTCM_CFG,
> >+ EGRESS_SLOW_TICK_RATIO_MASK,
> >+ FIELD_PREP(EGRESS_SLOW_TICK_RATIO_MASK, 40));
> >+
> >+ airoha_qdma_set(eth, REG_INGRESS_TRTCM_CFG,
> >INGRESS_TRTCM_EN_MASK);
> >+ airoha_qdma_clear(eth, REG_INGRESS_TRTCM_CFG,
> >+ INGRESS_TRTCM_MODE_MASK);
> >+ airoha_qdma_rmw(eth, REG_INGRESS_TRTCM_CFG,
> >INGRESS_FAST_TICK_MASK,
> >+ FIELD_PREP(INGRESS_FAST_TICK_MASK, 125));
> >+ airoha_qdma_rmw(eth, REG_INGRESS_TRTCM_CFG,
> >+ INGRESS_SLOW_TICK_RATIO_MASK,
> >+ FIELD_PREP(INGRESS_SLOW_TICK_RATIO_MASK, 8));
> >+
> >+ airoha_qdma_set(eth, REG_SLA_TRTCM_CFG, SLA_TRTCM_EN_MASK);
> >+ airoha_qdma_rmw(eth, REG_SLA_TRTCM_CFG, SLA_FAST_TICK_MASK,
> >+ FIELD_PREP(SLA_FAST_TICK_MASK, 25));
> >+ airoha_qdma_rmw(eth, REG_SLA_TRTCM_CFG,
> >SLA_SLOW_TICK_RATIO_MASK,
> >+ FIELD_PREP(SLA_SLOW_TICK_RATIO_MASK, 40));
> >+}
> >+
> >+static int airoha_qdma_hw_init(struct airoha_eth *eth)
> >+{
> >+ int i;
> >+
> >+ /* clear pending irqs */
> >+ for (i = 0; i < ARRAY_SIZE(eth->irqmask); i++)
> >+ airoha_qdma_wr(eth, REG_INT_STATUS(i), 0xffffffff);
> >+
> >+ /* setup irqs */
> >+ airoha_qdma_irq_enable(eth, QDMA_INT_REG_IDX0, INT_IDX0_MASK);
> >+ airoha_qdma_irq_enable(eth, QDMA_INT_REG_IDX1, INT_IDX1_MASK);
> >+ airoha_qdma_irq_enable(eth, QDMA_INT_REG_IDX4, INT_IDX4_MASK);
> >+
> >+ /* setup irq binding */
> >+ for (i = 0; i < ARRAY_SIZE(eth->q_tx); i++) {
> >+ if (TX_RING_IRQ_BLOCKING_MAP_MASK & BIT(i))
> >+ airoha_qdma_set(eth, REG_TX_RING_BLOCKING(i),
> >+ TX_RING_IRQ_BLOCKING_CFG_MASK);
> >+ else
> >+ airoha_qdma_clear(eth, REG_TX_RING_BLOCKING(i),
> >+ TX_RING_IRQ_BLOCKING_CFG_MASK);
> >+ }
> >+
> >+ airoha_qdma_wr(eth, REG_QDMA_GLOBAL_CFG,
> >+ GLOBAL_CFG_RX_2B_OFFSET |
> >+ FIELD_PREP(GLOBAL_CFG_DMA_PREFERENCE_MASK, 3) |
> >+ GLOBAL_CFG_CPU_TXR_ROUND_ROBIN |
> >+ GLOBAL_CFG_PAYLOAD_BYTE_SWAP |
> >+ GLOBAL_CFG_MULTICAST_MODIFY_FP |
> >+ GLOBAL_CFG_MULTICAST_EN_MASK |
> >+ GLOBAL_CFG_IRQ0_EN | GLOBAL_CFG_IRQ1_EN |
> >+ GLOBAL_CFG_TX_WB_DONE |
> >+ FIELD_PREP(GLOBAL_CFG_MAX_ISSUE_NUM_MASK, 2));
> >+
> >+ airoha_qdma_init_qos(eth);
> >+
> >+ /* disable qdma rx delay interrupt */
> >+ airoha_qdma_for_each_q_rx(eth, i)
> >+ airoha_qdma_clear(eth, REG_RX_DELAY_INT_IDX(i),
> >+ RX_DELAY_INT_MASK);
> >+
> >+ airoha_qdma_set(eth, REG_TXQ_CNGST_CFG,
> >+ TXQ_CNGST_DROP_EN | TXQ_CNGST_DEI_DROP_EN);
> >+
> >+ return 0;
> >+}
> >+
> >+static irqreturn_t airoha_irq_handler(int irq, void *dev_instance)
> >+{
> >+ struct airoha_eth *eth = dev_instance;
> >+ u32 intr[ARRAY_SIZE(eth->irqmask)];
> >+ int i;
> >+
> >+ for (i = 0; i < ARRAY_SIZE(eth->irqmask); i++) {
> >+ intr[i] = airoha_qdma_rr(eth, REG_INT_STATUS(i));
> >+ intr[i] &= eth->irqmask[i];
> >+ airoha_qdma_wr(eth, REG_INT_STATUS(i), intr[i]);
> >+ }
> >+
> >+ if (!test_bit(DEV_STATE_INITIALIZED, ð->state))
> >+ return IRQ_NONE;
> >+
> >+ if (intr[1] & RX_DONE_INT_MASK) {
> >+ airoha_qdma_irq_disable(eth, QDMA_INT_REG_IDX1,
> >+ RX_DONE_INT_MASK);
> >+ airoha_qdma_for_each_q_rx(eth, i) {
> >+ if (intr[1] & BIT(i))
> >+ napi_schedule(ð->q_rx[i].napi);
> >+ }
> >+ }
> >+
> >+ if (intr[0] & INT_TX_MASK) {
> >+ for (i = 0; i < ARRAY_SIZE(eth->q_tx_irq); i++) {
> >+ struct airoha_tx_irq_queue *irq_q = ð->q_tx_irq[i];
> >+ u32 status, head;
> >+
> >+ if (!(intr[0] & TX_DONE_INT_MASK(i)))
> >+ continue;
> >+
> >+ airoha_qdma_irq_disable(eth, QDMA_INT_REG_IDX0,
> >+ TX_DONE_INT_MASK(i));
> >+
> >+ status = airoha_qdma_rr(eth, REG_IRQ_STATUS(i));
> >+ head = FIELD_GET(IRQ_HEAD_IDX_MASK, status);
> >+ irq_q->head = head % irq_q->size;
> >+ irq_q->queued = FIELD_GET(IRQ_ENTRY_LEN_MASK,
> >status);
> >+
> >+ napi_schedule(ð->q_tx_irq[i].napi);
> >+ }
> >+ }
> >+
> >+ return IRQ_HANDLED;
> >+}
> >+
> >+static int airoha_qdma_init(struct airoha_eth *eth)
> >+{
> >+ struct device *dev = eth->net_dev->dev.parent;
> >+ int err;
> >+
> >+ err = devm_request_irq(dev, eth->irq, airoha_irq_handler,
> >+ IRQF_SHARED, KBUILD_MODNAME, eth);
> >+ if (err)
> >+ return err;
> >+
> >+ err = airoha_qdma_init_rx(eth);
> >+ if (err)
> >+ return err;
> >+
> >+ err = airoha_qdma_init_tx(eth);
> >+ if (err)
> >+ return err;
> >+
> >+ err = airoha_qdma_init_hfwd_queues(eth);
> >+ if (err)
> >+ return err;
> >+
> >+ err = airoha_qdma_hw_init(eth);
> >+ if (err)
> >+ return err;
> >+
> >+ set_bit(DEV_STATE_INITIALIZED, ð->state);
> >+
> >+ return 0;
> >+}
> >+
> >+static int airoha_hw_init(struct airoha_eth *eth)
> >+{
> >+ int err;
> >+
> >+ /* disable xsi */
> >+ reset_control_bulk_assert(ARRAY_SIZE(eth->xsi_rsts), eth->xsi_rsts);
> >+
> >+ reset_control_bulk_assert(ARRAY_SIZE(eth->rsts), eth->rsts);
> >+ msleep(20);
> >+ reset_control_bulk_deassert(ARRAY_SIZE(eth->rsts), eth->rsts);
> >+ msleep(20);
> >+
> >+ err = airoha_fe_init(eth);
> >+ if (err)
> >+ return err;
> >+
> >+ return airoha_qdma_init(eth);
> >+}
> >+
> >+static int airoha_dev_open(struct net_device *dev)
> >+{
> >+ struct airoha_eth *eth = netdev_priv(dev);
> >+ int err;
> >+
> >+ if (netdev_uses_dsa(dev))
> >+ airoha_fe_set(eth, REG_GDM1_INGRESS_CFG,
> >GDM1_STAG_EN_MASK);
> >+ else
> >+ airoha_fe_clear(eth, REG_GDM1_INGRESS_CFG,
> >GDM1_STAG_EN_MASK);
> >+
> >+ netif_tx_start_all_queues(dev);
> >+ err = airoha_set_gdma_ports(eth, true);
> >+ if (err)
> >+ return err;
> >+
> >+ airoha_qdma_set(eth, REG_QDMA_GLOBAL_CFG,
> >GLOBAL_CFG_TX_DMA_EN);
> >+ airoha_qdma_set(eth, REG_QDMA_GLOBAL_CFG,
> >GLOBAL_CFG_RX_DMA_EN);
> >+
> >+ return 0;
> >+}
> >+
> >+static int airoha_dev_stop(struct net_device *dev)
> >+{
> >+ struct airoha_eth *eth = netdev_priv(dev);
> >+ int err;
> >+
> >+ netif_tx_disable(dev);
> >+ err = airoha_set_gdma_ports(eth, false);
> >+ if (err)
> >+ return err;
> >+
> >+ airoha_qdma_clear(eth, REG_QDMA_GLOBAL_CFG,
> >GLOBAL_CFG_TX_DMA_EN);
> >+ airoha_qdma_clear(eth, REG_QDMA_GLOBAL_CFG,
> >GLOBAL_CFG_RX_DMA_EN);
> >+
> >+ return 0;
> >+}
> >+
> >+static int airoha_dev_set_macaddr(struct net_device *dev, void *p)
> >+{
> >+ struct airoha_eth *eth = netdev_priv(dev);
> >+ int err;
> >+
> >+ err = eth_mac_addr(dev, p);
> >+ if (err)
> >+ return err;
> >+
> >+ airoha_set_macaddr(eth, dev->dev_addr);
> >+
> >+ return 0;
> >+}
> >+
> >+static int airoha_dev_init(struct net_device *dev)
> >+{
> >+ struct airoha_eth *eth = netdev_priv(dev);
> >+
> >+ airoha_set_macaddr(eth, dev->dev_addr);
> >+
> >+ return 0;
> >+}
> >+
> >+static netdev_tx_t airoha_dev_xmit(struct sk_buff *skb,
> >+ struct net_device *dev)
> >+{
> >+ struct skb_shared_info *sinfo = skb_shinfo(skb);
> >+ u32 nr_frags = 1 + sinfo->nr_frags, msg0 = 0, msg1;
> >+ struct airoha_eth *eth = netdev_priv(dev);
> >+ int i, qid = skb_get_queue_mapping(skb);
> >+ u32 len = skb_headlen(skb);
> >+ struct airoha_queue *q;
> >+ void *data = skb->data;
> >+ u16 index;
> >+
> >+ if (skb->ip_summed == CHECKSUM_PARTIAL)
> >+ msg0 |= FIELD_PREP(QDMA_ETH_TXMSG_TCO_MASK, 1) |
> >+ FIELD_PREP(QDMA_ETH_TXMSG_UCO_MASK, 1) |
> >+ FIELD_PREP(QDMA_ETH_TXMSG_ICO_MASK, 1);
> >+
> >+ /* TSO: fill MSS info in tcp checksum field */
> >+ if (skb_is_gso(skb)) {
> >+ if (skb_cow_head(skb, 0))
> >+ goto error;
> >+
> >+ if (sinfo->gso_type & (SKB_GSO_TCPV4 | SKB_GSO_TCPV6)) {
> >+ tcp_hdr(skb)->check = cpu_to_be16(sinfo->gso_size);
> >+ msg0 |= FIELD_PREP(QDMA_ETH_TXMSG_TSO_MASK,
> >1);
> >+ }
> >+ }
> >+
> >+ msg1 = FIELD_PREP(QDMA_ETH_TXMSG_FPORT_MASK, DPORT_GDM1) |
> >+ FIELD_PREP(QDMA_ETH_TXMSG_METER_MASK, 0x7f);
> >+
> >+ if (WARN_ON_ONCE(qid >= ARRAY_SIZE(eth->q_tx)))
> >+ qid = 0;
> >+
> >+ q = ð->q_tx[qid];
> >+ spin_lock_bh(&q->lock);
> >+
> >+ if (q->queued + nr_frags > q->ndesc) {
> >+ /* not enough space in the queue */
> >+ spin_unlock_bh(&q->lock);
> >+ return NETDEV_TX_BUSY;
> >+ }
> >+
> >+ index = q->head;
> >+ for (i = 0; i < nr_frags; i++) {
> >+ struct airoha_qdma_desc *desc = &q->desc[index];
> >+ struct airoha_queue_entry *e = &q->entry[index];
> >+ skb_frag_t *frag = &sinfo->frags[i];
> >+ dma_addr_t addr;
> >+ u32 val;
> >+
> >+ addr = dma_map_single(dev->dev.parent, data, len,
> >+ DMA_TO_DEVICE);
> >+ if (unlikely(dma_mapping_error(dev->dev.parent, addr)))
> >+ goto error_unmap;
> >+
> >+ index = (index + 1) % q->ndesc;
> >+
> >+ val = FIELD_PREP(QDMA_DESC_LEN_MASK, len);
> >+ if (i < nr_frags - 1)
> >+ val |= FIELD_PREP(QDMA_DESC_MORE_MASK, 1);
> >+ WRITE_ONCE(desc->ctrl, cpu_to_le32(val));
> >+ WRITE_ONCE(desc->addr, cpu_to_le32(addr));
> >+ val = FIELD_PREP(QDMA_DESC_NEXT_ID_MASK, index);
> >+ WRITE_ONCE(desc->data, cpu_to_le32(val));
> >+ WRITE_ONCE(desc->msg0, cpu_to_le32(msg0));
> >+ WRITE_ONCE(desc->msg1, cpu_to_le32(msg1));
> >+ WRITE_ONCE(desc->msg2, cpu_to_le32(0xffff));
> >+
> >+ e->skb = i ? NULL : skb;
> >+ e->dma_addr = addr;
> >+ e->dma_len = len;
> >+
> >+ wmb();
> >+ airoha_qdma_rmw(eth, REG_TX_CPU_IDX(qid),
> >TX_RING_CPU_IDX_MASK,
> >+ FIELD_PREP(TX_RING_CPU_IDX_MASK, index));
> >+
> >+ data = skb_frag_address(frag);
> >+ len = skb_frag_size(frag);
> >+ }
> >+
> >+ q->head = index;
> >+ q->queued += i;
> >+
> >+ if (q->queued + q->free_thr >= q->ndesc)
> >+ netif_stop_subqueue(dev, qid);
> >+
> >+ spin_unlock_bh(&q->lock);
> >+
> >+ return NETDEV_TX_OK;
> >+
> >+error_unmap:
> >+ for (; i >= 0; i++)
> >+ dma_unmap_single(dev->dev.parent, q->entry[i].dma_addr,
> >+ q->entry[i].dma_len, DMA_TO_DEVICE);
> >+
> >+ spin_unlock_bh(&q->lock);
> >+error:
> >+ dev_kfree_skb_any(skb);
> >+ dev->stats.tx_dropped++;
> >+
> >+ return NETDEV_TX_OK;
> >+}
> >+
> >+static int airoha_dev_change_mtu(struct net_device *dev, int new_mtu)
> >+{
> >+ dev->mtu = new_mtu;
> >+
> >+ return 0;
> >+}
> >+
> >+static const struct net_device_ops airoha_netdev_ops = {
> >+ .ndo_init = airoha_dev_init,
> >+ .ndo_open = airoha_dev_open,
> >+ .ndo_stop = airoha_dev_stop,
> >+ .ndo_start_xmit = airoha_dev_xmit,
> >+ .ndo_change_mtu = airoha_dev_change_mtu,
> >+ .ndo_set_mac_address = airoha_dev_set_macaddr,
> >+};
> >+
> >+static int airoha_rx_queues_show(struct seq_file *s, void *data)
> >+{
> >+ struct airoha_eth *eth = s->private;
> >+ int i;
> >+
> >+ seq_puts(s, " queue | hw-queued | head | tail |\n");
> >+ airoha_qdma_for_each_q_rx(eth, i) {
> >+ struct airoha_queue *q = ð->q_rx[i];
> >+
> >+ seq_printf(s, " %9d | %9d | %9d | %9d |\n",
> >+ i, q->queued, q->head, q->tail);
> >+ }
> >+
> >+ return 0;
> >+}
> >+DEFINE_SHOW_ATTRIBUTE(airoha_rx_queues);
> >+
> >+static int airoha_xmit_queues_show(struct seq_file *s, void *data)
> >+{
> >+ struct airoha_eth *eth = s->private;
> >+ int i;
> >+
> >+ seq_puts(s, " queue | hw-queued | head | tail |\n");
> >+ for (i = 0; i < ARRAY_SIZE(eth->q_tx); i++) {
> >+ struct airoha_queue *q = ð->q_tx[i];
> >+
> >+ seq_printf(s, " %9d | %9d | %9d | %9d |\n",
> >+ i, q->queued, q->head, q->tail);
> >+ }
> >+
> >+ return 0;
> >+}
> >+DEFINE_SHOW_ATTRIBUTE(airoha_xmit_queues);
> >+
> >+static int airoha_register_debugfs(struct airoha_eth *eth)
> >+{
> >+ eth->debugfs_dir = debugfs_create_dir(KBUILD_MODNAME, NULL);
> >+ if (IS_ERR(eth->debugfs_dir))
> >+ return PTR_ERR(eth->debugfs_dir);
> >+
> >+ debugfs_create_file("rx-queues", 0400, eth->debugfs_dir, eth,
> >+ &airoha_rx_queues_fops);
> >+ debugfs_create_file("xmit-queues", 0400, eth->debugfs_dir, eth,
> >+ &airoha_xmit_queues_fops);
> >+
> >+ return 0;
> >+}
> >+
> >+static int airoha_probe(struct platform_device *pdev)
> >+{
> >+ struct device_node *np = pdev->dev.of_node;
> >+ struct net_device *dev;
> >+ struct airoha_eth *eth;
> >+ int err;
> >+
> >+ dev = devm_alloc_etherdev_mqs(&pdev->dev, sizeof(*eth),
> >+ AIROHA_NUM_TX_RING,
> >AIROHA_NUM_RX_RING);
> >+ if (!dev) {
> >+ dev_err(&pdev->dev, "alloc_etherdev failed\n");
> >+ return -ENOMEM;
> >+ }
> >+
> >+ eth = netdev_priv(dev);
> >+ eth->net_dev = dev;
> >+
> >+ err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
> >+ if (err) {
> >+ dev_err(&pdev->dev, "failed configuring DMA mask\n");
> >+ return err;
> >+ }
> >+
> >+ eth->fe_regs = devm_platform_ioremap_resource_byname(pdev, "fe");
> >+ if (IS_ERR(eth->fe_regs))
> >+ return dev_err_probe(&pdev->dev, PTR_ERR(eth->fe_regs),
> >+ "failed to iomap fe regs\n");
> >+
> >+ eth->qdma_regs = devm_platform_ioremap_resource_byname(pdev,
> >"qdma0");
> >+ if (IS_ERR(eth->qdma_regs))
> >+ return dev_err_probe(&pdev->dev, PTR_ERR(eth->qdma_regs),
> >+ "failed to iomap qdma regs\n");
> >+
> >+ eth->rsts[0].id = "fe";
> >+ eth->rsts[1].id = "pdma";
> >+ eth->rsts[2].id = "qdma";
> >+ err = devm_reset_control_bulk_get_exclusive(&pdev->dev,
> >+ ARRAY_SIZE(eth->rsts),
> >+ eth->rsts);
> >+ if (err) {
> >+ dev_err(&pdev->dev, "failed to get bulk reset lines\n");
> >+ return err;
> >+ }
> >+
> >+ eth->xsi_rsts[0].id = "xsi-mac";
> >+ eth->xsi_rsts[1].id = "hsi0-mac";
> >+ eth->xsi_rsts[2].id = "hsi1-mac";
> >+ eth->xsi_rsts[3].id = "hsi-mac";
> >+ err = devm_reset_control_bulk_get_exclusive(&pdev->dev,
> >+ ARRAY_SIZE(eth->xsi_rsts),
> >+ eth->xsi_rsts);
> >+ if (err) {
> >+ dev_err(&pdev->dev, "failed to get bulk xsi reset lines\n");
> >+ return err;
> >+ }
> >+
> >+ spin_lock_init(ð->irq_lock);
> >+ eth->irq = platform_get_irq(pdev, 0);
> >+ if (eth->irq < 0) {
> >+ dev_err(&pdev->dev, "failed reading irq line\n");
> >+ return eth->irq;
> >+ }
> >+
> >+ dev->netdev_ops = &airoha_netdev_ops;
> >+ dev->max_mtu = AIROHA_MAX_MTU;
> >+ dev->watchdog_timeo = 5 * HZ;
> >+ dev->hw_features = NETIF_F_IP_CSUM | NETIF_F_RXCSUM |
> >+ NETIF_F_TSO6 | NETIF_F_IPV6_CSUM |
> >+ NETIF_F_SG | NETIF_F_TSO;
> >+ dev->features |= dev->hw_features;
> >+ dev->dev.of_node = np;
> >+ dev->irq = eth->irq;
> >+ SET_NETDEV_DEV(dev, &pdev->dev);
> >+
> >+ err = of_get_ethdev_address(np, dev);
> >+ if (err) {
> >+ if (err == -EPROBE_DEFER)
> >+ return err;
> >+
> >+ eth_hw_addr_random(dev);
> >+ dev_err(&pdev->dev, "generated random MAC address %pM\n",
> >+ dev->dev_addr);
> >+ }
> >+
> >+ err = airoha_hw_init(eth);
> >+ if (err)
> >+ return err;
> >+
> >+ airoha_qdma_start_napi(eth);
> >+ err = register_netdev(dev);
> >+ if (err)
> >+ return err;
> >+
> >+ err = airoha_register_debugfs(eth);
> >+ if (err)
> >+ return err;
> >+
> >+ platform_set_drvdata(pdev, eth);
> >+
> >+ return 0;
> >+}
> >+
> >+static void airoha_remove(struct platform_device *pdev)
> >+{
> >+ struct airoha_eth *eth = platform_get_drvdata(pdev);
> >+ int i;
> >+
> >+ debugfs_remove(eth->debugfs_dir);
> >+
> >+ airoha_qdma_for_each_q_rx(eth, i) {
> >+ struct airoha_queue *q = ð->q_rx[i];
> >+
> >+ netif_napi_del(&q->napi);
> >+ airoha_qdma_clenaup_rx_queue(q);
> >+ page_pool_destroy(q->page_pool);
> >+ }
> >+
> >+ for (i = 0; i < ARRAY_SIZE(eth->q_tx_irq); i++)
> >+ netif_napi_del(ð->q_tx_irq[i].napi);
> >+ for (i = 0; i < ARRAY_SIZE(eth->q_tx); i++)
> >+ airoha_qdma_clenaup_tx_queue(ð->q_tx[i]);
> >+}
> >+
> >+const struct of_device_id of_airoha_match[] = {
> >+ { .compatible = "airoha,en7581-eth" },
> >+ { /* sentinel */ }
> >+};
> >+
> >+static struct platform_driver airoha_driver = {
> >+ .probe = airoha_probe,
> >+ .remove_new = airoha_remove,
> >+ .driver = {
> >+ .name = KBUILD_MODNAME,
> >+ .of_match_table = of_airoha_match,
> >+ },
> >+};
> >+module_platform_driver(airoha_driver);
> >+
> >+MODULE_LICENSE("GPL");
> >+MODULE_AUTHOR("Lorenzo Bianconi <lorenzo@...nel.org>");
> >+MODULE_DESCRIPTION("Ethernet driver for Airoha SoC");
> >diff --git a/drivers/net/ethernet/mediatek/airoha_eth.h
> >b/drivers/net/ethernet/mediatek/airoha_eth.h
> >new file mode 100644
> >index 000000000000..e88fecfac44f
> >--- /dev/null
> >+++ b/drivers/net/ethernet/mediatek/airoha_eth.h
> >@@ -0,0 +1,719 @@
> >+// SPDX-License-Identifier: GPL-2.0
> >+/*
> >+ * Copyright (C) 2024 Lorenzo Bianconi <lorenzo@...nel.org>
> >+ */
> >+
> >+#define AIROHA_MAX_NUM_RSTS 3
> >+#define AIROHA_MAX_NUM_XSI_RSTS 4
> >+#define AIROHA_MAX_MTU 2000
> >+#define AIROHA_MAX_PACKET_SIZE 2048
> >+#define AIROHA_NUM_TX_RING 32
> >+#define AIROHA_NUM_RX_RING 32
> >+#define AIROHA_FE_MC_MAX_VLAN_TABLE 64
> >+#define AIROHA_FE_MC_MAX_VLAN_PORT 16
> >+#define AIROHA_NUM_TX_IRQ 2
> >+#define HW_DSCP_NUM 2048
> >+#define IRQ_QUEUE_LEN(_n) ((_n) ? 1024 : 2048)
> >+#define TX_DSCP_NUM 1024
> >+#define RX_DSCP_NUM(_n) \
> >+ ((_n) == 2 ? 128 : \
> >+ (_n) == 11 ? 128 : \
> >+ (_n) == 15 ? 128 : \
> >+ (_n) == 0 ? 1024 : 16)
> >+
> >+/* FE */
> >+#define PSE_BASE 0x0100
> >+#define CSR_IFC_BASE 0x0200
> >+#define CDM1_BASE 0x0400
> >+#define GDM1_BASE 0x0500
> >+#define PPE1_BASE 0x0c00
> >+
> >+#define CDM2_BASE 0x1400
> >+#define GDM2_BASE 0x1500
> >+
> >+#define GDM3_BASE 0x1100
> >+#define GDM4_BASE 0x2400
> >+
> >+#define REG_FE_DMA_GLO_CFG 0x0000
> >+#define FE_DMA_GLO_L2_SPACE_MASK GENMASK(7, 4)
> >+#define FE_DMA_GLO_PG_SZ_MASK BIT(3)
> >+
> >+#define REG_FE_RST_GLO_CFG 0x0004
> >+#define FE_RST_GDM4_MBI_ARB_MASK BIT(3)
> >+#define FE_RST_GDM3_MBI_ARB_MASK BIT(2)
> >+#define FE_RST_CORE_MASK BIT(0)
> >+
> >+#define REG_FE_LAN_MAC_H 0x0040
> >+#define REG_FE_LAN_MAC_LMIN 0x0044
> >+#define REG_FE_LAN_MAC_LMAX 0x0048
> >+
> >+#define REG_FE_CDM1_OQ_MAP0 0x0050
> >+#define REG_FE_CDM1_OQ_MAP1 0x0054
> >+#define REG_FE_CDM1_OQ_MAP2 0x0058
> >+#define REG_FE_CDM1_OQ_MAP3 0x005c
> >+
> >+#define REG_FE_PCE_CFG 0x0070
> >+#define PCE_DPI_EN BIT(2)
> >+#define PCE_KA_EN BIT(1)
> >+#define PCE_MC_EN BIT(0)
> >+
> >+#define PSE_PORT0_QUEUE 6
> >+#define PSE_PORT1_QUEUE 6
> >+#define PSE_PORT2_QUEUE 32
> >+#define PSE_PORT3_QUEUE 6
> >+#define PSE_PORT4_QUEUE 4
> >+#define PSE_PORT5_QUEUE 6
> >+#define PSE_PORT6_QUEUE 8
> >+#define PSE_PORT7_QUEUE 10
> >+#define PSE_PORT8_QUEUE 4
> >+#define PSE_PORT9_QUEUE 2
> >+#define PSE_PORT10_QUEUE 2
> >+#define PSE_PORT11_QUEUE 0
> >+#define PSE_PORT12_QUEUE 0
> >+#define PSE_PORT13_QUEUE 0
> >+#define PSE_PORT14_QUEUE 0
> >+#define PSE_PORT15_QUEUE 0
> >+
> >+#define REG_FE_PSE_QUEUE_CFG_WR 0x0080
> >+#define PSE_CFG_PORT_ID_MASK GENMASK(27, 24)
> >+#define PSE_CFG_QUEUE_ID_MASK GENMASK(20, 16)
> >+#define PSE_CFG_WR_EN_MASK BIT(8)
> >+#define PSE_CFG_OQRSV_SEL_MASK BIT(0)
> >+
> >+#define REG_FE_PSE_QUEUE_CFG_VAL 0x0084
> >+#define PSE_CFG_OQ_RSV_MASK GENMASK(13, 0)
> >+
> >+#define PSE_FQ_CFG 0x008c
> >+#define PSE_FQ_LIMIT_MASK GENMASK(14, 0)
> >+
> >+#define REG_FE_PSE_BUF_SET 0x0090
> >+#define PSE_SHARE_USED_LTHD_MASK GENMASK(31, 16)
> >+#define PSE_ALLRSV_MASK GENMASK(14, 0)
> >+
> >+#define REG_PSE_SHARE_USED_THD 0x0094
> >+#define PSE_SHARE_USED_MTHD_MASK GENMASK(31, 16)
> >+#define PSE_SHARE_USED_HTHD_MASK GENMASK(15, 0)
> >+
> >+#define REG_GDM_MISC_CFG 0x0148
> >+#define GDM2_RDM_ACK_WAIT_PREF_MASK BIT(9)
> >+#define GDM2_CHN_VLD_MODE_MASK BIT(5)
> >+
> >+#define REG_FE_CSR_IFC_CFG CSR_IFC_BASE
> >+#define FE_IFC_EN_MASK BIT(0)
> >+
> >+#define REG_FE_VIP_PORT_EN 0x01f0
> >+#define REG_FE_IFC_PORT_EN 0x01f4
> >+
> >+#define REG_PSE_IQ_REV1 (PSE_BASE + 0x08)
> >+#define PSE_IQ_RES1_P2_MASK GENMASK(23, 16)
> >+
> >+#define REG_PSE_IQ_REV2 (PSE_BASE + 0x0c)
> >+#define PSE_IQ_RES2_P5_MASK GENMASK(15, 8)
> >+#define PSE_IQ_RES2_P4_MASK GENMASK(7, 0)
> >+
> >+#define REG_FE_VIP_EN(_n) (0x0300 + ((_n) << 3))
> >+#define PATN_FCPU_EN_MASK BIT(7)
> >+#define PATN_SWP_EN_MASK BIT(6)
> >+#define PATN_DP_EN_MASK BIT(5)
> >+#define PATN_SP_EN_MASK BIT(4)
> >+#define PATN_TYPE_MASK GENMASK(3, 1)
> >+#define PATN_EN_MASK BIT(0)
> >+
> >+#define REG_FE_VIP_PATN(_n) (0x0304 + ((_n) << 3))
> >+#define PATN_DP_MASK GENMASK(31, 16)
> >+#define PATN_SP_MASK GENMASK(15, 0)
> >+
> >+#define REG_CDM1_VLAN_CTRL CDM1_BASE
> >+#define CDM1_VLAN_MASK GENMASK(31, 16)
> >+
> >+#define REG_CDM1_FWD_CFG (CDM1_BASE + 0x08)
> >+#define CDM1_VIP_QSEL_MASK GENMASK(24, 20)
> >+
> >+#define REG_CDM1_CRSN_QSEL(_n) (CDM1_BASE + 0x10 + ((_n) <<
> >2))
> >+#define CDM1_CRSN_QSEL_REASON_MASK(_n) \
> >+ GENMASK(4 + (((_n) % 4) << 3), (((_n) % 4 ) << 3))
> >+
> >+#define REG_CDM2_FWD_CFG (CDM2_BASE + 0x08)
> >+#define CDM2_OAM_QSEL_MASK GENMASK(31, 27)
> >+#define CDM2_VIP_QSEL_MASK GENMASK(24, 20)
> >+
> >+#define REG_CDM2_CRSN_QSEL(_n) (CDM2_BASE + 0x10 + ((_n) <<
> >2))
> >+#define CDM2_CRSN_QSEL_REASON_MASK(_n) \
> >+ GENMASK(4 + (((_n) % 4) << 3), (((_n) % 4 ) << 3))
> >+
> >+#define REG_GDM1_FWD_CFG GDM1_BASE
> >+#define GDM1_DROP_CRC_ERR BIT(23)
> >+#define GDM1_IP4_CKSUM BIT(22)
> >+#define GDM1_TCP_CKSUM BIT(21)
> >+#define GDM1_UDP_CKSUM BIT(20)
> >+#define GDM1_UCFQ_MASK GENMASK(15, 12)
> >+#define GDM1_BCFQ_MASK GENMASK(11, 8)
> >+#define GDM1_MCFQ_MASK GENMASK(7, 4)
> >+#define GDM1_OCFQ_MASK GENMASK(3, 0)
> >+
> >+#define REG_GDM1_INGRESS_CFG (GDM1_BASE + 0x10)
> >+#define GDM1_INGRESS_FC_EN_MASK BIT(1)
> >+#define GDM1_STAG_EN_MASK BIT(0)
> >+
> >+#define REG_GDM1_LEN_CFG (GDM1_BASE + 0x14)
> >+#define GDM1_SHORT_LEN_MASK GENMASK(13, 0)
> >+#define GDM1_LONG_LEN_MASK GENMASK(29, 16)
> >+
> >+#define REG_FE_CPORT_CFG (GDM1_BASE + 0x40)
> >+#define FE_CPORT_PAD BIT(26)
> >+#define FE_CPORT_PORT_XFC_MASK BIT(25)
> >+#define FE_CPORT_QUEUE_XFC_MASK BIT(24)
> >+
> >+#define REG_PPE1_TB_HASH_CFG (PPE1_BASE + 0x250)
> >+#define PPE1_SRAM_TABLE_EN_MASK BIT(0)
> >+#define PPE1_SRAM_HASH1_EN_MASK BIT(8)
> >+#define PPE1_DRAM_TABLE_EN_MASK BIT(16)
> >+#define PPE1_DRAM_HASH1_EN_MASK BIT(24)
> >+
> >+#define REG_GDM2_CHN_RLS (GDM2_BASE + 0x20)
> >+#define MBI_RX_AGE_SEL_MASK GENMASK(18, 17)
> >+#define MBI_TX_AGE_SEL_MASK GENMASK(18, 17)
> >+
> >+#define REG_GDM3_FWD_CFG GDM3_BASE
> >+#define GDM3_PAD_EN_MASK BIT(28)
> >+
> >+#define REG_GDM4_FWD_CFG (GDM4_BASE + 0x100)
> >+#define GDM4_PAD_EN_MASK BIT(28)
> >+#define GDM4_SPORT_OFFSET0_MASK GENMASK(11, 8)
> >+
> >+#define REG_GDM4_SRC_PORT_SET (GDM4_BASE + 0x33c)
> >+#define GDM4_SPORT_OFF2_MASK GENMASK(19, 16)
> >+#define GDM4_SPORT_OFF1_MASK GENMASK(15, 12)
> >+#define GDM4_SPORT_OFF0_MASK GENMASK(11, 8)
> >+
> >+#define REG_IP_FRAG_FP 0x2010
> >+#define IP_ASSEMBLE_PORT_MASK GENMASK(24, 21)
> >+#define IP_ASSEMBLE_NBQ_MASK GENMASK(20, 16)
> >+#define IP_FRAGMENT_PORT_MASK GENMASK(8, 5)
> >+#define IP_FRAGMENT_NBQ_MASK GENMASK(4, 0)
> >+
> >+#define REG_MC_VLAN_EN 0x2100
> >+#define MC_VLAN_EN_MASK BIT(0)
> >+
> >+#define REG_MC_VLAN_CFG 0x2104
> >+#define MC_VLAN_CFG_CMD_DONE_MASK BIT(31)
> >+#define MC_VLAN_CFG_TABLE_ID_MASK GENMASK(21, 16)
> >+#define MC_VLAN_CFG_PORT_ID_MASK GENMASK(11, 8)
> >+#define MC_VLAN_CFG_TABLE_SEL_MASK BIT(4)
> >+#define MC_VLAN_CFG_RW_MASK BIT(0)
> >+
> >+#define REG_MC_VLAN_DATA 0x2108
> >+
> >+#define REG_CDM5_RX_OQ1_DROP_CNT 0x29d4
> >+
> >+/* QDMA */
> >+#define REG_QDMA_GLOBAL_CFG 0x0004
> >+#define GLOBAL_CFG_RX_2B_OFFSET BIT(31)
> >+#define GLOBAL_CFG_DMA_PREFERENCE_MASK GENMASK(30, 29)
> >+#define GLOBAL_CFG_CPU_TXR_ROUND_ROBIN BIT(28)
> >+#define GLOBAL_CFG_DSCP_BYTE_SWAP BIT(27)
> >+#define GLOBAL_CFG_PAYLOAD_BYTE_SWAP BIT(26)
> >+#define GLOBAL_CFG_MULTICAST_MODIFY_FP BIT(25)
> >+#define GLOBAL_CFG_OAM_MODIFY_MASK BIT(24)
> >+#define GLOBAL_CFG_RESET_MASK BIT(23)
> >+#define GLOBAL_CFG_RESET_DONE_MASK BIT(22)
> >+#define GLOBAL_CFG_MULTICAST_EN_MASK BIT(21)
> >+#define GLOBAL_CFG_IRQ1_EN BIT(20)
> >+#define GLOBAL_CFG_IRQ0_EN BIT(19)
> >+#define GLOBAL_CFG_LOOPCNT_EN BIT(18)
> >+#define GLOBAL_CFG_RD_BYPASS_WR BIT(17)
> >+#define GLOBAL_CFG_QDMA_LOOPBACK BIT(16)
> >+#define GLOBAL_CFG_LPBK_RXQ_SEL_MASK GENMASK(13, 8)
> >+#define GLOBAL_CFG_CHECK_DONE BIT(7)
> >+#define GLOBAL_CFG_TX_WB_DONE BIT(6)
> >+#define GLOBAL_CFG_MAX_ISSUE_NUM_MASK GENMASK(5, 4)
> >+#define GLOBAL_CFG_RX_DMA_BUSY BIT(3)
> >+#define GLOBAL_CFG_RX_DMA_EN BIT(2)
> >+#define GLOBAL_CFG_TX_DMA_BUSY BIT(1)
> >+#define GLOBAL_CFG_TX_DMA_EN BIT(0)
> >+
> >+#define REG_FWD_DSCP_BASE 0x0010
> >+#define REG_FWD_BUF_BASE 0x0014
> >+
> >+#define REG_HW_FWD_DSCP_CFG 0x0018
> >+#define HW_FWD_DSCP_PAYLOAD_SIZE_MASK GENMASK(29, 28)
> >+#define HW_FWD_DSCP_SCATTER_LEN_MASK GENMASK(17, 16)
> >+#define HW_FWD_DSCP_MIN_SCATTER_LEN_MASK GENMASK(15, 0)
> >+
> >+#define REG_INT_STATUS(_n) \
> >+ (((_n) == 4) ? 0x0730 : \
> >+ ((_n) == 3) ? 0x0724 : \
> >+ ((_n) == 2) ? 0x0720 : \
> >+ ((_n) == 1) ? 0x0024 : 0x0020)
> >+
> >+#define REG_INT_ENABLE(_n) \
> >+ (((_n) == 4) ? 0x0750 : \
> >+ ((_n) == 3) ? 0x0744 : \
> >+ ((_n) == 2) ? 0x0740 : \
> >+ ((_n) == 1) ? 0x002c : 0x0028)
> >+
> >+/* QDMA_CSR_INT_ENABLE1 */
> >+#define RX15_COHERENT_INT_MASK BIT(31)
> >+#define RX14_COHERENT_INT_MASK BIT(30)
> >+#define RX13_COHERENT_INT_MASK BIT(29)
> >+#define RX12_COHERENT_INT_MASK BIT(28)
> >+#define RX11_COHERENT_INT_MASK BIT(27)
> >+#define RX10_COHERENT_INT_MASK BIT(26)
> >+#define RX9_COHERENT_INT_MASK BIT(25)
> >+#define RX8_COHERENT_INT_MASK BIT(24)
> >+#define RX7_COHERENT_INT_MASK BIT(23)
> >+#define RX6_COHERENT_INT_MASK BIT(22)
> >+#define RX5_COHERENT_INT_MASK BIT(21)
> >+#define RX4_COHERENT_INT_MASK BIT(20)
> >+#define RX3_COHERENT_INT_MASK BIT(19)
> >+#define RX2_COHERENT_INT_MASK BIT(18)
> >+#define RX1_COHERENT_INT_MASK BIT(17)
> >+#define RX0_COHERENT_INT_MASK BIT(16)
> >+#define TX7_COHERENT_INT_MASK BIT(15)
> >+#define TX6_COHERENT_INT_MASK BIT(14)
> >+#define TX5_COHERENT_INT_MASK BIT(13)
> >+#define TX4_COHERENT_INT_MASK BIT(12)
> >+#define TX3_COHERENT_INT_MASK BIT(11)
> >+#define TX2_COHERENT_INT_MASK BIT(10)
> >+#define TX1_COHERENT_INT_MASK BIT(9)
> >+#define TX0_COHERENT_INT_MASK BIT(8)
> >+#define CNT_OVER_FLOW_INT_MASK BIT(7)
> >+#define IRQ1_FULL_INT_MASK BIT(5)
> >+#define IRQ1_INT_MASK BIT(4)
> >+#define HWFWD_DSCP_LOW_INT_MASK BIT(3)
> >+#define HWFWD_DSCP_EMPTY_INT_MASK BIT(2)
> >+#define IRQ0_FULL_INT_MASK BIT(1)
> >+#define IRQ0_INT_MASK BIT(0)
> >+
> >+#define TX_DONE_INT_MASK(_n) \
> >+ ((_n) ? IRQ1_INT_MASK | IRQ1_FULL_INT_MASK \
> >+ : IRQ0_INT_MASK | IRQ0_FULL_INT_MASK)
> >+
> >+#define INT_TX_MASK \
> >+ (IRQ1_INT_MASK | IRQ1_FULL_INT_MASK | \
> >+ IRQ0_INT_MASK | IRQ0_FULL_INT_MASK)
> >+
> >+#define INT_IDX0_MASK \
> >+ (TX0_COHERENT_INT_MASK | TX1_COHERENT_INT_MASK | \
> >+ TX2_COHERENT_INT_MASK | TX3_COHERENT_INT_MASK | \
> >+ TX4_COHERENT_INT_MASK | TX5_COHERENT_INT_MASK | \
> >+ TX6_COHERENT_INT_MASK | TX7_COHERENT_INT_MASK | \
> >+ RX0_COHERENT_INT_MASK | RX1_COHERENT_INT_MASK | \
> >+ RX2_COHERENT_INT_MASK | RX3_COHERENT_INT_MASK | \
> >+ RX4_COHERENT_INT_MASK | RX7_COHERENT_INT_MASK | \
> >+ RX8_COHERENT_INT_MASK | RX9_COHERENT_INT_MASK | \
> >+ RX15_COHERENT_INT_MASK | INT_TX_MASK)
> >+
> >+/* QDMA_CSR_INT_ENABLE2 */
> >+#define RX15_NO_CPU_DSCP_INT_MASK BIT(31)
> >+#define RX14_NO_CPU_DSCP_INT_MASK BIT(30)
> >+#define RX13_NO_CPU_DSCP_INT_MASK BIT(29)
> >+#define RX12_NO_CPU_DSCP_INT_MASK BIT(28)
> >+#define RX11_NO_CPU_DSCP_INT_MASK BIT(27)
> >+#define RX10_NO_CPU_DSCP_INT_MASK BIT(26)
> >+#define RX9_NO_CPU_DSCP_INT_MASK BIT(25)
> >+#define RX8_NO_CPU_DSCP_INT_MASK BIT(24)
> >+#define RX7_NO_CPU_DSCP_INT_MASK BIT(23)
> >+#define RX6_NO_CPU_DSCP_INT_MASK BIT(22)
> >+#define RX5_NO_CPU_DSCP_INT_MASK BIT(21)
> >+#define RX4_NO_CPU_DSCP_INT_MASK BIT(20)
> >+#define RX3_NO_CPU_DSCP_INT_MASK BIT(19)
> >+#define RX2_NO_CPU_DSCP_INT_MASK BIT(18)
> >+#define RX1_NO_CPU_DSCP_INT_MASK BIT(17)
> >+#define RX0_NO_CPU_DSCP_INT_MASK BIT(16)
> >+#define RX15_DONE_INT_MASK BIT(15)
> >+#define RX14_DONE_INT_MASK BIT(14)
> >+#define RX13_DONE_INT_MASK BIT(13)
> >+#define RX12_DONE_INT_MASK BIT(12)
> >+#define RX11_DONE_INT_MASK BIT(11)
> >+#define RX10_DONE_INT_MASK BIT(10)
> >+#define RX9_DONE_INT_MASK BIT(9)
> >+#define RX8_DONE_INT_MASK BIT(8)
> >+#define RX7_DONE_INT_MASK BIT(7)
> >+#define RX6_DONE_INT_MASK BIT(6)
> >+#define RX5_DONE_INT_MASK BIT(5)
> >+#define RX4_DONE_INT_MASK BIT(4)
> >+#define RX3_DONE_INT_MASK BIT(3)
> >+#define RX2_DONE_INT_MASK BIT(2)
> >+#define RX1_DONE_INT_MASK BIT(1)
> >+#define RX0_DONE_INT_MASK BIT(0)
> >+
> >+#define RX_DONE_INT_MASK \
> >+ (RX0_DONE_INT_MASK | RX1_DONE_INT_MASK | \
> >+ RX2_DONE_INT_MASK | RX3_DONE_INT_MASK | \
> >+ RX4_DONE_INT_MASK | RX7_DONE_INT_MASK | \
> >+ RX8_DONE_INT_MASK | RX9_DONE_INT_MASK | \
> >+ RX15_DONE_INT_MASK)
> >+#define INT_IDX1_MASK \
> >+ (RX_DONE_INT_MASK | \
> >+ RX0_NO_CPU_DSCP_INT_MASK | RX1_NO_CPU_DSCP_INT_MASK |
> > \
> >+ RX2_NO_CPU_DSCP_INT_MASK | RX3_NO_CPU_DSCP_INT_MASK |
> > \
> >+ RX4_NO_CPU_DSCP_INT_MASK | RX7_NO_CPU_DSCP_INT_MASK |
> > \
> >+ RX8_NO_CPU_DSCP_INT_MASK | RX9_NO_CPU_DSCP_INT_MASK |
> > \
> >+ RX15_NO_CPU_DSCP_INT_MASK)
> >+
> >+/* QDMA_CSR_INT_ENABLE5 */
> >+#define TX31_COHERENT_INT_MASK BIT(31)
> >+#define TX30_COHERENT_INT_MASK BIT(30)
> >+#define TX29_COHERENT_INT_MASK BIT(29)
> >+#define TX28_COHERENT_INT_MASK BIT(28)
> >+#define TX27_COHERENT_INT_MASK BIT(27)
> >+#define TX26_COHERENT_INT_MASK BIT(26)
> >+#define TX25_COHERENT_INT_MASK BIT(25)
> >+#define TX24_COHERENT_INT_MASK BIT(24)
> >+#define TX23_COHERENT_INT_MASK BIT(23)
> >+#define TX22_COHERENT_INT_MASK BIT(22)
> >+#define TX21_COHERENT_INT_MASK BIT(21)
> >+#define TX20_COHERENT_INT_MASK BIT(20)
> >+#define TX19_COHERENT_INT_MASK BIT(19)
> >+#define TX18_COHERENT_INT_MASK BIT(18)
> >+#define TX17_COHERENT_INT_MASK BIT(17)
> >+#define TX16_COHERENT_INT_MASK BIT(16)
> >+#define TX15_COHERENT_INT_MASK BIT(15)
> >+#define TX14_COHERENT_INT_MASK BIT(14)
> >+#define TX13_COHERENT_INT_MASK BIT(13)
> >+#define TX12_COHERENT_INT_MASK BIT(12)
> >+#define TX11_COHERENT_INT_MASK BIT(11)
> >+#define TX10_COHERENT_INT_MASK BIT(10)
> >+#define TX9_COHERENT_INT_MASK BIT(9)
> >+#define TX8_COHERENT_INT_MASK BIT(8)
> >+
> >+#define INT_IDX4_MASK \
> >+ (TX8_COHERENT_INT_MASK | TX9_COHERENT_INT_MASK | \
> >+ TX10_COHERENT_INT_MASK | TX11_COHERENT_INT_MASK | \
> >+ TX12_COHERENT_INT_MASK | TX13_COHERENT_INT_MASK | \
> >+ TX14_COHERENT_INT_MASK | TX15_COHERENT_INT_MASK | \
> >+ TX16_COHERENT_INT_MASK | TX17_COHERENT_INT_MASK | \
> >+ TX18_COHERENT_INT_MASK | TX19_COHERENT_INT_MASK | \
> >+ TX20_COHERENT_INT_MASK | TX21_COHERENT_INT_MASK | \
> >+ TX20_COHERENT_INT_MASK | TX21_COHERENT_INT_MASK | \
> >+ TX22_COHERENT_INT_MASK | TX23_COHERENT_INT_MASK | \
> >+ TX24_COHERENT_INT_MASK | TX25_COHERENT_INT_MASK | \
> >+ TX26_COHERENT_INT_MASK | TX27_COHERENT_INT_MASK | \
> >+ TX28_COHERENT_INT_MASK | TX29_COHERENT_INT_MASK | \
> >+ TX30_COHERENT_INT_MASK | TX31_COHERENT_INT_MASK)
> >+
> >+#define REG_TX_IRQ_BASE(_n) ((_n) ? 0x0048 : 0x0050)
> >+
> >+#define REG_TX_IRQ_CFG(_n) ((_n) ? 0x004c : 0x0054)
> >+#define TX_IRQ_THR_MASK GENMASK(27, 16)
> >+#define TX_IRQ_DEPTH_MASK GENMASK(11, 0)
> >+
> >+#define REG_IRQ_CLEAR_LEN(_n) ((_n) ? 0x0064 : 0x0058)
> >+#define IRQ_CLEAR_LEN_MASK GENMASK(7, 0)
> >+
> >+#define REG_IRQ_STATUS(_n) ((_n) ? 0x0068 : 0x005c)
> >+#define IRQ_ENTRY_LEN_MASK GENMASK(27, 16)
> >+#define IRQ_HEAD_IDX_MASK GENMASK(11, 0)
> >+
> >+#define REG_TX_RING_BASE(_n) \
> >+ (((_n) < 8) ? 0x0100 + ((_n) << 5) : 0x0b00 + (((_n) - 8) << 5))
> >+
> >+#define REG_TX_RING_BLOCKING(_n) \
> >+ (((_n) < 8) ? 0x0104 + ((_n) << 5) : 0x0b04 + (((_n) - 8) << 5))
> >+
> >+#define TX_RING_IRQ_BLOCKING_MAP_MASK BIT(6)
> >+#define TX_RING_IRQ_BLOCKING_CFG_MASK BIT(4)
> >+#define TX_RING_IRQ_BLOCKING_TX_DROP_EN_MASK BIT(2)
> >+#define TX_RING_IRQ_BLOCKING_MAX_TH_TXRING_EN_MASK BIT(1)
> >+#define TX_RING_IRQ_BLOCKING_MIN_TH_TXRING_EN_MASK BIT(0)
> >+
> >+#define REG_TX_CPU_IDX(_n) \
> >+ (((_n) < 8) ? 0x0108 + ((_n) << 5) : 0x0b08 + (((_n) - 8) << 5))
> >+
> >+#define TX_RING_CPU_IDX_MASK GENMASK(15, 0)
> >+
> >+#define REG_TX_DMA_IDX(_n) \
> >+ (((_n) < 8) ? 0x010c + ((_n) << 5) : 0x0b0c + (((_n) - 8) << 5))
> >+
> >+#define TX_RING_DMA_IDX_MASK GENMASK(15, 0)
> >+
> >+#define IRQ_RING_IDX_MASK GENMASK(20, 16)
> >+#define IRQ_DESC_IDX_MASK GENMASK(15, 0)
> >+
> >+#define REG_RX_RING_BASE(_n) \
> >+ (((_n) < 16) ? 0x0200 + ((_n) << 5) : 0x0e00 + (((_n) - 16) << 5))
> >+
> >+#define REG_RX_RING_SIZE(_n) \
> >+ (((_n) < 16) ? 0x0204 + ((_n) << 5) : 0x0e04 + (((_n) - 16) << 5))
> >+
> >+#define RX_RING_THR_MASK GENMASK(31, 16)
> >+#define RX_RING_SIZE_MASK GENMASK(15, 0)
> >+
> >+#define REG_RX_CPU_IDX(_n) \
> >+ (((_n) < 16) ? 0x0208 + ((_n) << 5) : 0x0e08 + (((_n) - 16) << 5))
> >+
> >+#define RX_RING_CPU_IDX_MASK GENMASK(15, 0)
> >+
> >+#define REG_RX_DMA_IDX(_n) \
> >+ (((_n) < 16) ? 0x020c + ((_n) << 5) : 0x0e0c + (((_n) - 16) << 5))
> >+
> >+#define REG_RX_DELAY_INT_IDX(_n) \
> >+ (((_n) < 16) ? 0x0210 + ((_n) << 5) : 0x0e10 + (((_n) - 16) << 5))
> >+
> >+#define RX_DELAY_INT_MASK GENMASK(15, 0)
> >+
> >+#define RX_RING_DMA_IDX_MASK GENMASK(15, 0)
> >+
> >+#define REG_INGRESS_TRTCM_CFG 0x0070
> >+#define INGRESS_TRTCM_EN_MASK BIT(31)
> >+#define INGRESS_TRTCM_MODE_MASK BIT(30)
> >+#define INGRESS_SLOW_TICK_RATIO_MASK GENMASK(29, 16)
> >+#define INGRESS_FAST_TICK_MASK GENMASK(15, 0)
> >+
> >+#define REG_TXQ_DIS_CFG_BASE(_n) ((_n) ? 0x20a0 : 0x00a0)
> >+#define REG_TXQ_DIS_CFG(_n, _m) (REG_TXQ_DIS_CFG_BASE((_n))
> >+ (_m) << 2)
> >+
> >+#define REG_LMGR_INIT_CFG 0x1000
> >+#define LMGR_INIT_START BIT(31)
> >+#define LMGR_SRAM_MODE_MASK BIT(30)
> >+#define HW_FWD_PKTSIZE_OVERHEAD_MASK GENMASK(27, 20)
> >+#define HW_FWD_DESC_NUM_MASK GENMASK(16, 0)
> >+
> >+#define REG_FWD_DSCP_LOW_THR 0x1004
> >+#define FWD_DSCP_LOW_THR_MASK GENMASK(17, 0)
> >+
> >+#define REG_EGRESS_RATE_METER_CFG 0x100c
> >+#define EGRESS_RATE_METER_EN_MASK BIT(29)
> >+#define EGRESS_RATE_METER_EQ_RATE_EN_MASK BIT(17)
> >+#define EGRESS_RATE_METER_WINDOW_SZ_MASK GENMASK(16, 12)
> >+#define EGRESS_RATE_METER_TIMESLICE_MASK GENMASK(10, 0)
> >+
> >+#define REG_EGRESS_TRTCM_CFG 0x1010
> >+#define EGRESS_TRTCM_EN_MASK BIT(31)
> >+#define EGRESS_TRTCM_MODE_MASK BIT(30)
> >+#define EGRESS_SLOW_TICK_RATIO_MASK GENMASK(29, 16)
> >+#define EGRESS_FAST_TICK_MASK GENMASK(15, 0)
> >+
> >+#define REG_TXWRR_MODE_CFG 0x1020
> >+#define TWRR_WEIGHT_SCALE_MASK BIT(31)
> >+#define TWRR_WEIGHT_BASE_MASK BIT(3)
> >+
> >+#define REG_PSE_BUF_USAGE_CFG 0x1028
> >+#define PSE_BUF_ESTIMATE_EN_MASK BIT(29)
> >+
> >+#define REG_GLB_TRTCM_CFG 0x1080
> >+#define GLB_TRTCM_EN_MASK BIT(31)
> >+#define GLB_TRTCM_MODE_MASK BIT(30)
> >+#define GLB_SLOW_TICK_RATIO_MASK GENMASK(29, 16)
> >+#define GLB_FAST_TICK_MASK GENMASK(15, 0)
> >+
> >+#define REG_TXQ_CNGST_CFG 0x10a0
> >+#define TXQ_CNGST_DROP_EN BIT(31)
> >+#define TXQ_CNGST_DEI_DROP_EN BIT(30)
> >+
> >+#define REG_SLA_TRTCM_CFG 0x1150
> >+#define SLA_TRTCM_EN_MASK BIT(31)
> >+#define SLA_TRTCM_MODE_MASK BIT(30)
> >+#define SLA_SLOW_TICK_RATIO_MASK GENMASK(29, 16)
> >+#define SLA_FAST_TICK_MASK GENMASK(15, 0)
> >+
> >+/* CTRL */
> >+#define QDMA_DESC_DONE_MASK BIT(31)
> >+#define QDMA_DESC_DROP_MASK BIT(30) /* tx: drop pkt - rx:
> >overflow */
> >+#define QDMA_DESC_MORE_MASK BIT(29) /* more SG elements */
> >+#define QDMA_DESC_DEI_MASK BIT(25)
> >+#define QDMA_DESC_NO_DROP_MASK BIT(24)
> >+#define QDMA_DESC_LEN_MASK GENMASK(15, 0)
> >+/* DATA */
> >+#define QDMA_DESC_NEXT_ID_MASK GENMASK(15, 0)
> >+/* MSG0 */
> >+#define QDMA_ETH_TXMSG_MIC_IDX_MASK BIT(30)
> >+#define QDMA_ETH_TXMSG_SP_TAG_MASK GENMASK(29, 14)
> >+#define QDMA_ETH_TXMSG_ICO_MASK BIT(13)
> >+#define QDMA_ETH_TXMSG_UCO_MASK BIT(12)
> >+#define QDMA_ETH_TXMSG_TCO_MASK BIT(11)
> >+#define QDMA_ETH_TXMSG_TSO_MASK BIT(10)
> >+#define QDMA_ETH_TXMSG_FAST_MASK BIT(9)
> >+#define QDMA_ETH_TXMSG_OAM_MASK BIT(8)
> >+#define QDMA_ETH_TXMSG_CHAN_MASK GENMASK(7, 3)
> >+#define QDMA_ETH_TXMSG_QUEUE_MASK GENMASK(2, 0)
> >+/* MSG1 */
> >+#define QDMA_ETH_TXMSG_NO_DROP BIT(31)
> >+#define QDMA_ETH_TXMSG_METER_MASK GENMASK(30, 24) /* 0x7f
> >means do not apply meters */
> >+#define QDMA_ETH_TXMSG_FPORT_MASK GENMASK(23, 20)
> >+#define QDMA_ETH_TXMSG_NBOQ_MASK GENMASK(19, 15)
> >+#define QDMA_ETH_TXMSG_HWF_MASK BIT(14)
> >+#define QDMA_ETH_TXMSG_HOP_MASK BIT(13)
> >+#define QDMA_ETH_TXMSG_PTP_MASK BIT(12)
> >+#define QDMA_ETH_TXMSG_ACNT_G1_MASK GENMASK(10, 6) /* 0x1f
> >means do not count */
> >+#define QDMA_ETH_TXMSG_ACNT_G0_MASK GENMASK(5, 0) /* 0x3f means
> >do not count */
> >+
> >+struct airoha_qdma_desc {
> >+ __le32 rsv;
> >+ __le32 ctrl;
> >+ __le32 addr;
> >+ __le32 data;
> >+ __le32 msg0;
> >+ __le32 msg1;
> >+ __le32 msg2;
> >+ __le32 msg3;
> >+};
> >+
> >+/* CTRL0 */
> >+#define QDMA_FWD_DESC_CTX_MASK BIT(31)
> >+#define QDMA_FWD_DESC_RING_MASK GENMASK(30, 28)
> >+#define QDMA_FWD_DESC_IDX_MASK GENMASK(27, 16)
> >+#define QDMA_FWD_DESC_LEN_MASK GENMASK(15, 0)
> >+/* CTRL1 */
> >+#define QDMA_FWD_DESC_FIRST_IDX_MASK GENMASK(15, 0)
> >+/* CTRL2 */
> >+#define QDMA_FWD_DESC_MORE_PKT_NUM_MASK GENMASK(2, 0)
> >+
> >+struct airoha_qdma_fwd_desc {
> >+ __le32 addr;
> >+ __le32 ctrl0;
> >+ __le32 ctrl1;
> >+ __le32 ctrl2;
> >+ __le32 msg0;
> >+ __le32 msg1;
> >+ __le32 rsv0;
> >+ __le32 rsv1;
> >+};
> >+
> >+enum {
> >+ QDMA_INT_REG_IDX0,
> >+ QDMA_INT_REG_IDX1,
> >+ QDMA_INT_REG_IDX2,
> >+ QDMA_INT_REG_IDX3,
> >+ QDMA_INT_REG_IDX4,
> >+ QDMA_INT_REG_MAX
> >+};
> >+
> >+enum airoha_dport {
> >+ DPORT_PDMA,
> >+ DPORT_GDM1,
> >+ DPORT_GDM2,
> >+ DPORT_GDM3,
> >+ DPORT_PPE,
> >+ DPORT_QDMA,
> >+ DPORT_QDMA_HW,
> >+ DPORT_DISCARD,
> >+ DPORT_GDM4 = 9,
> >+};
> >+
> >+enum {
> >+ FE_DP_CPU,
> >+ FE_DP_GDM1,
> >+ FE_DP_GDM2,
> >+ FE_DP_QDMA1_HWF,
> >+ FE_DP_GDMA3_HWF = 3,
> >+ FE_DP_PPE,
> >+ FE_DP_QDMA2_CPU,
> >+ FE_DP_QDMA2_HWF,
> >+ FE_DP_DISCARD,
> >+ FE_DP_PPE2 = 8,
> >+ FE_DP_DROP = 15,
> >+};
> >+
> >+enum {
> >+ CDM_CRSN_QSEL_Q1 = 1,
> >+ CDM_CRSN_QSEL_Q5 = 5,
> >+ CDM_CRSN_QSEL_Q6 = 6,
> >+ CDM_CRSN_QSEL_Q15 = 15,
> >+};
> >+
> >+enum {
> >+ CRSN_08 = 0x8,
> >+ CRSN_21 = 0x15, /* KA */
> >+ CRSN_22 = 0x16, /* hit bind and force route to CPU */
> >+ CRSN_24 = 0x18,
> >+ CRSN_25 = 0x19,
> >+};
> >+
> >+enum {
> >+ DEV_STATE_INITIALIZED,
> >+};
> >+
> >+struct airoha_queue_entry {
> >+ union {
> >+ void *buf;
> >+ struct sk_buff *skb;
> >+ };
> >+ dma_addr_t dma_addr;
> >+ u16 dma_len;
> >+};
> >+
> >+struct airoha_queue {
> >+ struct airoha_eth *eth;
> >+
> >+ spinlock_t lock;
> >+ struct airoha_queue_entry *entry;
> >+ struct airoha_qdma_desc *desc;
> >+ u16 head;
> >+ u16 tail;
> >+
> >+ int queued;
> >+ int ndesc;
> >+ int free_thr;
> >+ int buf_size;
> >+
> >+ struct napi_struct napi;
> >+ struct page_pool *page_pool;
> >+};
> >+
> >+struct airoha_tx_irq_queue {
> >+ struct airoha_eth *eth;
> >+
> >+ struct napi_struct napi;
> >+ u32 *q;
> >+
> >+ int size;
> >+ int queued;
> >+ u16 head;
> >+};
> >+
> >+struct airoha_eth {
> >+ struct net_device *net_dev;
> >+
> >+ unsigned long state;
> >+
> >+ void __iomem *qdma_regs;
> >+ void __iomem *fe_regs;
> >+
> >+ spinlock_t irq_lock;
> >+ u32 irqmask[QDMA_INT_REG_MAX];
> >+ int irq;
> >+
> >+ struct reset_control_bulk_data rsts[AIROHA_MAX_NUM_RSTS];
> >+ struct reset_control_bulk_data xsi_rsts[AIROHA_MAX_NUM_XSI_RSTS];
> >+
> >+ struct airoha_queue q_tx[AIROHA_NUM_TX_RING];
> >+ struct airoha_queue q_rx[AIROHA_NUM_RX_RING];
> >+
> >+ struct airoha_tx_irq_queue q_tx_irq[AIROHA_NUM_TX_IRQ];
> >+
> >+ /* descriptor and packet buffers for qdma hw forward */
> >+ struct {
> >+ void *desc;
> >+ void *q;
> >+ } hfwd;
> >+
> >+ struct dentry *debugfs_dir;
> >+};
> >+
> >+#define airoha_qdma_for_each_q_rx(eth, i) \
> >+ for (i = 0; i < ARRAY_SIZE((eth)->q_rx); i++) \
> >+ if ((eth)->q_rx[i].ndesc)
> >+
> >+static inline void airoha_qdma_start_napi(struct airoha_eth *eth)
> >+{
> >+ int i;
> >+
> >+ for (i = 0; i < ARRAY_SIZE(eth->q_tx_irq); i++)
> >+ napi_enable(ð->q_tx_irq[i].napi);
> >+
> >+ airoha_qdma_for_each_q_rx(eth, i)
> >+ napi_enable(ð->q_rx[i].napi);
> >+}
> >+
> >+static inline void airoha_qdma_stop_napi(struct airoha_eth *eth)
> >+{
> >+ int i;
> >+
> >+ for (i = 0; i < ARRAY_SIZE(eth->q_tx_irq); i++)
> >+ napi_disable(ð->q_tx_irq[i].napi);
> >+
> >+ airoha_qdma_for_each_q_rx(eth, i)
> >+ napi_disable(ð->q_rx[i].napi);
> >+}
> >--
> >2.45.1
> >
>
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