From 762031375d5ca1d36cf0a17d8430f42ad711ea90 Mon Sep 17 00:00:00 2001 From: Gerhard Engleder Date: Tue, 27 Sep 2022 21:58:40 +0200 Subject: [PATCH] tsnep: Support multiple TX/RX queue pairs Support additional TX/RX queue pairs if dedicated interrupt is available. Interrupts are detected by name in device tree. Signed-off-by: Gerhard Engleder Signed-off-by: David S. Miller --- drivers/net/ethernet/engleder/tsnep.h | 2 - drivers/net/ethernet/engleder/tsnep_hw.h | 1 + drivers/net/ethernet/engleder/tsnep_main.c | 61 +++++++++++++++++++++++++----- 3 files changed, 53 insertions(+), 11 deletions(-) diff --git a/drivers/net/ethernet/engleder/tsnep.h b/drivers/net/ethernet/engleder/tsnep.h index 149c9ac..62a279b 100644 --- a/drivers/net/ethernet/engleder/tsnep.h +++ b/drivers/net/ethernet/engleder/tsnep.h @@ -21,8 +21,6 @@ #define TSNEP_RING_ENTRIES_PER_PAGE (PAGE_SIZE / TSNEP_DESC_SIZE) #define TSNEP_RING_PAGE_COUNT (TSNEP_RING_SIZE / TSNEP_RING_ENTRIES_PER_PAGE) -#define TSNEP_QUEUES 1 - struct tsnep_gcl { void __iomem *addr; diff --git a/drivers/net/ethernet/engleder/tsnep_hw.h b/drivers/net/ethernet/engleder/tsnep_hw.h index e03aaaf..e6cc6fb 100644 --- a/drivers/net/ethernet/engleder/tsnep_hw.h +++ b/drivers/net/ethernet/engleder/tsnep_hw.h @@ -34,6 +34,7 @@ #define ECM_INT_LINK 0x00000020 #define ECM_INT_TX_0 0x00000100 #define ECM_INT_RX_0 0x00000200 +#define ECM_INT_TXRX_SHIFT 2 #define ECM_INT_ALL 0x7FFFFFFF #define ECM_INT_DISABLE 0x80000000 diff --git a/drivers/net/ethernet/engleder/tsnep_main.c b/drivers/net/ethernet/engleder/tsnep_main.c index fd6a392..9ae8413 100644 --- a/drivers/net/ethernet/engleder/tsnep_main.c +++ b/drivers/net/ethernet/engleder/tsnep_main.c @@ -1265,6 +1265,52 @@ static int tsnep_phy_init(struct tsnep_adapter *adapter) return 0; } +static int tsnep_queue_init(struct tsnep_adapter *adapter, int queue_count) +{ + u32 irq_mask = ECM_INT_TX_0 | ECM_INT_RX_0; + char name[8]; + int i; + int retval; + + /* one TX/RX queue pair for netdev is mandatory */ + if (platform_irq_count(adapter->pdev) == 1) + retval = platform_get_irq(adapter->pdev, 0); + else + retval = platform_get_irq_byname(adapter->pdev, "mac"); + if (retval < 0) + return retval; + adapter->num_tx_queues = 1; + adapter->num_rx_queues = 1; + adapter->num_queues = 1; + adapter->queue[0].irq = retval; + adapter->queue[0].tx = &adapter->tx[0]; + adapter->queue[0].rx = &adapter->rx[0]; + adapter->queue[0].irq_mask = irq_mask; + + adapter->netdev->irq = adapter->queue[0].irq; + + /* add additional TX/RX queue pairs only if dedicated interrupt is + * available + */ + for (i = 1; i < queue_count; i++) { + sprintf(name, "txrx-%d", i); + retval = platform_get_irq_byname_optional(adapter->pdev, name); + if (retval < 0) + break; + + adapter->num_tx_queues++; + adapter->num_rx_queues++; + adapter->num_queues++; + adapter->queue[i].irq = retval; + adapter->queue[i].tx = &adapter->tx[i]; + adapter->queue[i].rx = &adapter->rx[i]; + adapter->queue[i].irq_mask = + irq_mask << (ECM_INT_TXRX_SHIFT * i); + } + + return 0; +} + static int tsnep_probe(struct platform_device *pdev) { struct tsnep_adapter *adapter; @@ -1273,6 +1319,7 @@ static int tsnep_probe(struct platform_device *pdev) u32 type; int revision; int version; + int queue_count; int retval; netdev = devm_alloc_etherdev_mqs(&pdev->dev, @@ -1305,19 +1352,15 @@ static int tsnep_probe(struct platform_device *pdev) type = ioread32(adapter->addr + ECM_TYPE); revision = (type & ECM_REVISION_MASK) >> ECM_REVISION_SHIFT; version = (type & ECM_VERSION_MASK) >> ECM_VERSION_SHIFT; + queue_count = (type & ECM_QUEUE_COUNT_MASK) >> ECM_QUEUE_COUNT_SHIFT; adapter->gate_control = type & ECM_GATE_CONTROL; - adapter->num_tx_queues = TSNEP_QUEUES; - adapter->num_rx_queues = TSNEP_QUEUES; - adapter->num_queues = TSNEP_QUEUES; - adapter->queue[0].irq = platform_get_irq(pdev, 0); - adapter->queue[0].tx = &adapter->tx[0]; - adapter->queue[0].rx = &adapter->rx[0]; - adapter->queue[0].irq_mask = ECM_INT_TX_0 | ECM_INT_RX_0; - - netdev->irq = adapter->queue[0].irq; tsnep_disable_irq(adapter, ECM_INT_ALL); + retval = tsnep_queue_init(adapter, queue_count); + if (retval) + return retval; + retval = dma_set_mask_and_coherent(&adapter->pdev->dev, DMA_BIT_MASK(64)); if (retval) { -- 2.7.4