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Diffstat (limited to 'target/linux/mediatek/patches-4.4/0073-net-next-mediatek-add-support-for-IRQ-grouping.patch')
-rw-r--r--target/linux/mediatek/patches-4.4/0073-net-next-mediatek-add-support-for-IRQ-grouping.patch314
1 files changed, 0 insertions, 314 deletions
diff --git a/target/linux/mediatek/patches-4.4/0073-net-next-mediatek-add-support-for-IRQ-grouping.patch b/target/linux/mediatek/patches-4.4/0073-net-next-mediatek-add-support-for-IRQ-grouping.patch
deleted file mode 100644
index 6457deba0a..0000000000
--- a/target/linux/mediatek/patches-4.4/0073-net-next-mediatek-add-support-for-IRQ-grouping.patch
+++ /dev/null
@@ -1,314 +0,0 @@
-From e301da64a9fd2ebc24d4c9b2d184681ec833fd72 Mon Sep 17 00:00:00 2001
-From: John Crispin <blogic@openwrt.org>
-Date: Wed, 23 Mar 2016 18:31:48 +0100
-Subject: [PATCH 73/78] net-next: mediatek: add support for IRQ grouping
-
-The ethernet core has 3 IRQs. using the IRQ grouping registers we are able
-to separate TX and RX IRQs, which allows us to service them on separate
-cores. This patch splits the irq handler into 2 separate functiosn, one for
-TX and another for RX. The TX housekeeping is split out of the NAPI handler.
-Instead we use a tasklet to handle housekeeping.
-
-Signed-off-by: John Crispin <blogic@openwrt.org>
----
- drivers/net/ethernet/mediatek/mtk_eth_soc.c | 115 +++++++++++++++++----------
- drivers/net/ethernet/mediatek/mtk_eth_soc.h | 12 ++-
- 2 files changed, 86 insertions(+), 41 deletions(-)
-
-diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
-index bbcd607..2097ae1 100644
---- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
-+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
-@@ -757,7 +757,7 @@ drop:
- }
-
- static int mtk_poll_rx(struct napi_struct *napi, int budget,
-- struct mtk_eth *eth, u32 rx_intr)
-+ struct mtk_eth *eth)
- {
- struct mtk_rx_ring *ring = &eth->rx_ring;
- int idx = ring->calc_idx;
-@@ -843,12 +843,12 @@ release_desc:
- }
-
- if (done < budget)
-- mtk_w32(eth, rx_intr, MTK_QMTK_INT_STATUS);
-+ mtk_w32(eth, MTK_RX_DONE_INT, MTK_QMTK_INT_STATUS);
-
- return done;
- }
-
--static int mtk_poll_tx(struct mtk_eth *eth, int budget, bool *tx_again)
-+static int mtk_poll_tx(struct mtk_eth *eth, int budget)
- {
- struct mtk_tx_ring *ring = &eth->tx_ring;
- struct mtk_tx_dma *desc;
-@@ -911,9 +911,7 @@ static int mtk_poll_tx(struct mtk_eth *eth, int budget, bool *tx_again)
- }
-
- /* read hw index again make sure no new tx packet */
-- if (cpu != dma || cpu != mtk_r32(eth, MTK_QTX_DRX_PTR))
-- *tx_again = true;
-- else
-+ if (cpu == dma && cpu == mtk_r32(eth, MTK_QTX_DRX_PTR))
- mtk_w32(eth, MTK_TX_DONE_INT, MTK_QMTK_INT_STATUS);
-
- if (!total)
-@@ -925,27 +923,27 @@ static int mtk_poll_tx(struct mtk_eth *eth, int budget, bool *tx_again)
- return total;
- }
-
-+static void mtk_clean_tx_tasklet(unsigned long arg)
-+{
-+ struct mtk_eth *eth = (struct mtk_eth *)arg;
-+
-+ if (mtk_poll_tx(eth, MTK_NAPI_WEIGHT) > 0)
-+ tasklet_schedule(&eth->tx_clean_tasklet);
-+ else
-+ mtk_irq_enable(eth, MTK_TX_DONE_INT);
-+}
-+
- static int mtk_poll(struct napi_struct *napi, int budget)
- {
- struct mtk_eth *eth = container_of(napi, struct mtk_eth, rx_napi);
-- u32 status, status2, mask, tx_intr, rx_intr, status_intr;
-- int tx_done, rx_done;
-- bool tx_again = false;
-+ u32 status, status2, mask, status_intr;
-+ int rx_done = 0;
-
- status = mtk_r32(eth, MTK_QMTK_INT_STATUS);
- status2 = mtk_r32(eth, MTK_INT_STATUS2);
-- tx_intr = MTK_TX_DONE_INT;
-- rx_intr = MTK_RX_DONE_INT;
- status_intr = (MTK_GDM1_AF | MTK_GDM2_AF);
-- tx_done = 0;
-- rx_done = 0;
-- tx_again = 0;
-
-- if (status & tx_intr)
-- tx_done = mtk_poll_tx(eth, budget, &tx_again);
--
-- if (status & rx_intr)
-- rx_done = mtk_poll_rx(napi, budget, eth, rx_intr);
-+ rx_done = mtk_poll_rx(napi, budget, eth);
-
- if (unlikely(status2 & status_intr)) {
- mtk_stats_update(eth);
-@@ -954,20 +952,20 @@ static int mtk_poll(struct napi_struct *napi, int budget)
-
- if (unlikely(netif_msg_intr(eth))) {
- mask = mtk_r32(eth, MTK_QDMA_INT_MASK);
-- netdev_info(eth->netdev[0],
-- "done tx %d, rx %d, intr 0x%08x/0x%x\n",
-- tx_done, rx_done, status, mask);
-+ dev_info(eth->dev,
-+ "done rx %d, intr 0x%08x/0x%x\n",
-+ rx_done, status, mask);
- }
-
-- if (tx_again || rx_done == budget)
-+ if (rx_done == budget)
- return budget;
-
- status = mtk_r32(eth, MTK_QMTK_INT_STATUS);
-- if (status & (tx_intr | rx_intr))
-+ if (status & MTK_RX_DONE_INT)
- return budget;
-
- napi_complete(napi);
-- mtk_irq_enable(eth, tx_intr | rx_intr);
-+ mtk_irq_enable(eth, MTK_RX_DONE_INT);
-
- return rx_done;
- }
-@@ -1196,22 +1194,43 @@ static void mtk_tx_timeout(struct net_device *dev)
- schedule_work(&eth->pending_work);
- }
-
--static irqreturn_t mtk_handle_irq(int irq, void *_eth)
-+static irqreturn_t mtk_handle_irq_rx(int irq, void *_eth)
- {
- struct mtk_eth *eth = _eth;
- u32 status;
-
- status = mtk_r32(eth, MTK_QMTK_INT_STATUS);
-+ status &= ~MTK_TX_DONE_INT;
-+
- if (unlikely(!status))
- return IRQ_NONE;
-
-- if (likely(status & (MTK_RX_DONE_INT | MTK_TX_DONE_INT))) {
-+ if (status & MTK_RX_DONE_INT) {
- if (likely(napi_schedule_prep(&eth->rx_napi)))
- __napi_schedule(&eth->rx_napi);
-- } else {
-- mtk_w32(eth, status, MTK_QMTK_INT_STATUS);
-+ mtk_irq_disable(eth, MTK_RX_DONE_INT);
- }
-- mtk_irq_disable(eth, (MTK_RX_DONE_INT | MTK_TX_DONE_INT));
-+ mtk_w32(eth, status, MTK_QMTK_INT_STATUS);
-+
-+ return IRQ_HANDLED;
-+}
-+
-+static irqreturn_t mtk_handle_irq_tx(int irq, void *_eth)
-+{
-+ struct mtk_eth *eth = _eth;
-+ u32 status;
-+
-+ status = mtk_r32(eth, MTK_QMTK_INT_STATUS);
-+ status &= ~MTK_RX_DONE_INT;
-+
-+ if (unlikely(!status))
-+ return IRQ_NONE;
-+
-+ if (status & MTK_TX_DONE_INT) {
-+ tasklet_schedule(&eth->tx_clean_tasklet);
-+ mtk_irq_disable(eth, MTK_TX_DONE_INT);
-+ }
-+ mtk_w32(eth, status, MTK_QMTK_INT_STATUS);
-
- return IRQ_HANDLED;
- }
-@@ -1224,7 +1243,7 @@ static void mtk_poll_controller(struct net_device *dev)
- u32 int_mask = MTK_TX_DONE_INT | MTK_RX_DONE_INT;
-
- mtk_irq_disable(eth, int_mask);
-- mtk_handle_irq(dev->irq, dev);
-+ mtk_handle_irq(dev->irq[0], dev);
- mtk_irq_enable(eth, int_mask);
- }
- #endif
-@@ -1345,7 +1364,11 @@ static int __init mtk_hw_init(struct mtk_eth *eth)
- /* Enable RX VLan Offloading */
- mtk_w32(eth, 1, MTK_CDMP_EG_CTRL);
-
-- err = devm_request_irq(eth->dev, eth->irq, mtk_handle_irq, 0,
-+ err = devm_request_irq(eth->dev, eth->irq[1], mtk_handle_irq_tx, 0,
-+ dev_name(eth->dev), eth);
-+ if (err)
-+ return err;
-+ err = devm_request_irq(eth->dev, eth->irq[2], mtk_handle_irq_rx, 0,
- dev_name(eth->dev), eth);
- if (err)
- return err;
-@@ -1361,7 +1384,11 @@ static int __init mtk_hw_init(struct mtk_eth *eth)
- mtk_w32(eth, 0, MTK_RST_GL);
-
- /* FE int grouping */
-- mtk_w32(eth, 0, MTK_FE_INT_GRP);
-+ mtk_w32(eth, MTK_TX_DONE_INT, MTK_PDMA_INT_GRP1);
-+ mtk_w32(eth, MTK_RX_DONE_INT, MTK_PDMA_INT_GRP2);
-+ mtk_w32(eth, MTK_TX_DONE_INT, MTK_QDMA_INT_GRP1);
-+ mtk_w32(eth, MTK_RX_DONE_INT, MTK_QDMA_INT_GRP2);
-+ mtk_w32(eth, 0x21021000, MTK_FE_INT_GRP);
-
- for (i = 0; i < 2; i++) {
- u32 val = mtk_r32(eth, MTK_GDMA_FWD_CFG(i));
-@@ -1409,7 +1436,9 @@ static void mtk_uninit(struct net_device *dev)
- phy_disconnect(mac->phy_dev);
- mtk_mdio_cleanup(eth);
- mtk_irq_disable(eth, ~0);
-- free_irq(dev->irq, dev);
-+ free_irq(eth->irq[0], dev);
-+ free_irq(eth->irq[1], dev);
-+ free_irq(eth->irq[2], dev);
- }
-
- static int mtk_do_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
-@@ -1684,10 +1713,10 @@ static int mtk_add_mac(struct mtk_eth *eth, struct device_node *np)
- dev_err(eth->dev, "error bringing up device\n");
- goto free_netdev;
- }
-- eth->netdev[id]->irq = eth->irq;
-+ eth->netdev[id]->irq = eth->irq[0];
- netif_info(eth, probe, eth->netdev[id],
- "mediatek frame engine at 0x%08lx, irq %d\n",
-- eth->netdev[id]->base_addr, eth->netdev[id]->irq);
-+ eth->netdev[id]->base_addr, eth->irq[0]);
-
- return 0;
-
-@@ -1704,6 +1733,7 @@ static int mtk_probe(struct platform_device *pdev)
- struct mtk_soc_data *soc;
- struct mtk_eth *eth;
- int err;
-+ int i;
-
- match = of_match_device(of_mtk_match, &pdev->dev);
- soc = (struct mtk_soc_data *)match->data;
-@@ -1738,10 +1768,12 @@ static int mtk_probe(struct platform_device *pdev)
- return PTR_ERR(eth->rstc);
- }
-
-- eth->irq = platform_get_irq(pdev, 0);
-- if (eth->irq < 0) {
-- dev_err(&pdev->dev, "no IRQ resource found\n");
-- return -ENXIO;
-+ for (i = 0; i < 3; i++) {
-+ eth->irq[i] = platform_get_irq(pdev, i);
-+ if (eth->irq[i] < 0) {
-+ dev_err(&pdev->dev, "no IRQ%d resource found\n", i);
-+ return -ENXIO;
-+ }
- }
-
- eth->clk_ethif = devm_clk_get(&pdev->dev, "ethif");
-@@ -1785,6 +1817,9 @@ static int mtk_probe(struct platform_device *pdev)
- netif_napi_add(&eth->dummy_dev, &eth->rx_napi, mtk_poll,
- MTK_NAPI_WEIGHT);
-
-+ tasklet_init(&eth->tx_clean_tasklet,
-+ mtk_clean_tx_tasklet, (unsigned long)eth);
-+
- platform_set_drvdata(pdev, eth);
-
- return 0;
-diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.h b/drivers/net/ethernet/mediatek/mtk_eth_soc.h
-index eed626d..4cfb40c 100644
---- a/drivers/net/ethernet/mediatek/mtk_eth_soc.h
-+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.h
-@@ -68,6 +68,10 @@
- /* Unicast Filter MAC Address Register - High */
- #define MTK_GDMA_MAC_ADRH(x) (0x50C + (x * 0x1000))
-
-+/* PDMA Interrupt grouping registers */
-+#define MTK_PDMA_INT_GRP1 0xa50
-+#define MTK_PDMA_INT_GRP2 0xa54
-+
- /* QDMA TX Queue Configuration Registers */
- #define MTK_QTX_CFG(x) (0x1800 + (x * 0x10))
- #define QDMA_RES_THRES 4
-@@ -124,6 +128,11 @@
- #define MTK_TX_DONE_INT (MTK_TX_DONE_INT0 | MTK_TX_DONE_INT1 | \
- MTK_TX_DONE_INT2 | MTK_TX_DONE_INT3)
-
-+/* QDMA Interrupt grouping registers */
-+#define MTK_QDMA_INT_GRP1 0x1a20
-+#define MTK_QDMA_INT_GRP2 0x1a24
-+#define MTK_RLS_DONE_INT BIT(0)
-+
- /* QDMA Interrupt Status Register */
- #define MTK_QDMA_INT_MASK 0x1A1C
-
-@@ -374,7 +383,7 @@ struct mtk_eth {
- struct net_device dummy_dev;
- struct net_device *netdev[MTK_MAX_DEVS];
- struct mtk_mac *mac[MTK_MAX_DEVS];
-- int irq;
-+ int irq[3];
- u32 msg_enable;
- unsigned long sysclk;
- struct regmap *ethsys;
-@@ -391,6 +400,7 @@ struct mtk_eth {
- struct clk *clk_gp2;
- struct mii_bus *mii_bus;
- struct work_struct pending_work;
-+ struct tasklet_struct tx_clean_tasklet;
- };
-
- /* struct mtk_mac - the structure that holds the info about the MACs of the
---
-1.7.10.4
-
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-16 02:58:27 +0000