6.8-stable review patch. If anyone has any objections, please let me know.
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From: Jiawen Wu jiawenwu@trustnetic.com
[ Upstream commit 63aabc3ef1961a5eb3049d02a323b3b7fabb9a23 ]
In order to change the interrupt response structure, there will be a lot of code added next. Move these interrupt codes to a new file, to make the codes cleaner.
Signed-off-by: Jiawen Wu jiawenwu@trustnetic.com Signed-off-by: David S. Miller davem@davemloft.net Stable-dep-of: 1d3c6414950b ("net: txgbe: fix to control VLAN strip") Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/ethernet/wangxun/txgbe/Makefile | 1 + .../net/ethernet/wangxun/txgbe/txgbe_irq.c | 137 ++++++++++++++++++ .../net/ethernet/wangxun/txgbe/txgbe_irq.h | 5 + .../net/ethernet/wangxun/txgbe/txgbe_main.c | 128 +--------------- 4 files changed, 144 insertions(+), 127 deletions(-) create mode 100644 drivers/net/ethernet/wangxun/txgbe/txgbe_irq.c create mode 100644 drivers/net/ethernet/wangxun/txgbe/txgbe_irq.h
diff --git a/drivers/net/ethernet/wangxun/txgbe/Makefile b/drivers/net/ethernet/wangxun/txgbe/Makefile index 7507f762edfe5..42718875277c8 100644 --- a/drivers/net/ethernet/wangxun/txgbe/Makefile +++ b/drivers/net/ethernet/wangxun/txgbe/Makefile @@ -9,4 +9,5 @@ obj-$(CONFIG_TXGBE) += txgbe.o txgbe-objs := txgbe_main.o \ txgbe_hw.o \ txgbe_phy.o \ + txgbe_irq.o \ txgbe_ethtool.o diff --git a/drivers/net/ethernet/wangxun/txgbe/txgbe_irq.c b/drivers/net/ethernet/wangxun/txgbe/txgbe_irq.c new file mode 100644 index 0000000000000..d26ee4cb17678 --- /dev/null +++ b/drivers/net/ethernet/wangxun/txgbe/txgbe_irq.c @@ -0,0 +1,137 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (c) 2015 - 2024 Beijing WangXun Technology Co., Ltd. */ + +#include <linux/pci.h> + +#include "../libwx/wx_type.h" +#include "../libwx/wx_lib.h" +#include "../libwx/wx_hw.h" +#include "txgbe_type.h" +#include "txgbe_irq.h" + +/** + * txgbe_irq_enable - Enable default interrupt generation settings + * @wx: pointer to private structure + * @queues: enable irqs for queues + **/ +void txgbe_irq_enable(struct wx *wx, bool queues) +{ + wr32(wx, WX_PX_MISC_IEN, TXGBE_PX_MISC_IEN_MASK); + + /* unmask interrupt */ + wx_intr_enable(wx, TXGBE_INTR_MISC); + if (queues) + wx_intr_enable(wx, TXGBE_INTR_QALL(wx)); +} + +/** + * txgbe_intr - msi/legacy mode Interrupt Handler + * @irq: interrupt number + * @data: pointer to a network interface device structure + **/ +static irqreturn_t txgbe_intr(int __always_unused irq, void *data) +{ + struct wx_q_vector *q_vector; + struct wx *wx = data; + struct pci_dev *pdev; + u32 eicr; + + q_vector = wx->q_vector[0]; + pdev = wx->pdev; + + eicr = wx_misc_isb(wx, WX_ISB_VEC0); + if (!eicr) { + /* shared interrupt alert! + * the interrupt that we masked before the ICR read. + */ + if (netif_running(wx->netdev)) + txgbe_irq_enable(wx, true); + return IRQ_NONE; /* Not our interrupt */ + } + wx->isb_mem[WX_ISB_VEC0] = 0; + if (!(pdev->msi_enabled)) + wr32(wx, WX_PX_INTA, 1); + + wx->isb_mem[WX_ISB_MISC] = 0; + /* would disable interrupts here but it is auto disabled */ + napi_schedule_irqoff(&q_vector->napi); + + /* re-enable link(maybe) and non-queue interrupts, no flush. + * txgbe_poll will re-enable the queue interrupts + */ + if (netif_running(wx->netdev)) + txgbe_irq_enable(wx, false); + + return IRQ_HANDLED; +} + +/** + * txgbe_request_msix_irqs - Initialize MSI-X interrupts + * @wx: board private structure + * + * Allocate MSI-X vectors and request interrupts from the kernel. + **/ +static int txgbe_request_msix_irqs(struct wx *wx) +{ + struct net_device *netdev = wx->netdev; + int vector, err; + + for (vector = 0; vector < wx->num_q_vectors; vector++) { + struct wx_q_vector *q_vector = wx->q_vector[vector]; + struct msix_entry *entry = &wx->msix_q_entries[vector]; + + if (q_vector->tx.ring && q_vector->rx.ring) + snprintf(q_vector->name, sizeof(q_vector->name) - 1, + "%s-TxRx-%d", netdev->name, entry->entry); + else + /* skip this unused q_vector */ + continue; + + err = request_irq(entry->vector, wx_msix_clean_rings, 0, + q_vector->name, q_vector); + if (err) { + wx_err(wx, "request_irq failed for MSIX interrupt %s Error: %d\n", + q_vector->name, err); + goto free_queue_irqs; + } + } + + return 0; + +free_queue_irqs: + while (vector) { + vector--; + free_irq(wx->msix_q_entries[vector].vector, + wx->q_vector[vector]); + } + wx_reset_interrupt_capability(wx); + return err; +} + +/** + * txgbe_request_irq - initialize interrupts + * @wx: board private structure + * + * Attempt to configure interrupts using the best available + * capabilities of the hardware and kernel. + **/ +int txgbe_request_irq(struct wx *wx) +{ + struct net_device *netdev = wx->netdev; + struct pci_dev *pdev = wx->pdev; + int err; + + if (pdev->msix_enabled) + err = txgbe_request_msix_irqs(wx); + else if (pdev->msi_enabled) + err = request_irq(wx->pdev->irq, &txgbe_intr, 0, + netdev->name, wx); + else + err = request_irq(wx->pdev->irq, &txgbe_intr, IRQF_SHARED, + netdev->name, wx); + + if (err) + wx_err(wx, "request_irq failed, Error %d\n", err); + + return err; +} diff --git a/drivers/net/ethernet/wangxun/txgbe/txgbe_irq.h b/drivers/net/ethernet/wangxun/txgbe/txgbe_irq.h new file mode 100644 index 0000000000000..02c536421f7df --- /dev/null +++ b/drivers/net/ethernet/wangxun/txgbe/txgbe_irq.h @@ -0,0 +1,5 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* Copyright (c) 2015 - 2024 Beijing WangXun Technology Co., Ltd. */ + +void txgbe_irq_enable(struct wx *wx, bool queues); +int txgbe_request_irq(struct wx *wx); diff --git a/drivers/net/ethernet/wangxun/txgbe/txgbe_main.c b/drivers/net/ethernet/wangxun/txgbe/txgbe_main.c index c13c43e07a993..10388c2016031 100644 --- a/drivers/net/ethernet/wangxun/txgbe/txgbe_main.c +++ b/drivers/net/ethernet/wangxun/txgbe/txgbe_main.c @@ -17,6 +17,7 @@ #include "txgbe_type.h" #include "txgbe_hw.h" #include "txgbe_phy.h" +#include "txgbe_irq.h" #include "txgbe_ethtool.h"
char txgbe_driver_name[] = "txgbe"; @@ -76,133 +77,6 @@ static int txgbe_enumerate_functions(struct wx *wx) return physfns; }
-/** - * txgbe_irq_enable - Enable default interrupt generation settings - * @wx: pointer to private structure - * @queues: enable irqs for queues - **/ -static void txgbe_irq_enable(struct wx *wx, bool queues) -{ - wr32(wx, WX_PX_MISC_IEN, TXGBE_PX_MISC_IEN_MASK); - - /* unmask interrupt */ - wx_intr_enable(wx, TXGBE_INTR_MISC); - if (queues) - wx_intr_enable(wx, TXGBE_INTR_QALL(wx)); -} - -/** - * txgbe_intr - msi/legacy mode Interrupt Handler - * @irq: interrupt number - * @data: pointer to a network interface device structure - **/ -static irqreturn_t txgbe_intr(int __always_unused irq, void *data) -{ - struct wx_q_vector *q_vector; - struct wx *wx = data; - struct pci_dev *pdev; - u32 eicr; - - q_vector = wx->q_vector[0]; - pdev = wx->pdev; - - eicr = wx_misc_isb(wx, WX_ISB_VEC0); - if (!eicr) { - /* shared interrupt alert! - * the interrupt that we masked before the ICR read. - */ - if (netif_running(wx->netdev)) - txgbe_irq_enable(wx, true); - return IRQ_NONE; /* Not our interrupt */ - } - wx->isb_mem[WX_ISB_VEC0] = 0; - if (!(pdev->msi_enabled)) - wr32(wx, WX_PX_INTA, 1); - - wx->isb_mem[WX_ISB_MISC] = 0; - /* would disable interrupts here but it is auto disabled */ - napi_schedule_irqoff(&q_vector->napi); - - /* re-enable link(maybe) and non-queue interrupts, no flush. - * txgbe_poll will re-enable the queue interrupts - */ - if (netif_running(wx->netdev)) - txgbe_irq_enable(wx, false); - - return IRQ_HANDLED; -} - -/** - * txgbe_request_msix_irqs - Initialize MSI-X interrupts - * @wx: board private structure - * - * Allocate MSI-X vectors and request interrupts from the kernel. - **/ -static int txgbe_request_msix_irqs(struct wx *wx) -{ - struct net_device *netdev = wx->netdev; - int vector, err; - - for (vector = 0; vector < wx->num_q_vectors; vector++) { - struct wx_q_vector *q_vector = wx->q_vector[vector]; - struct msix_entry *entry = &wx->msix_q_entries[vector]; - - if (q_vector->tx.ring && q_vector->rx.ring) - snprintf(q_vector->name, sizeof(q_vector->name) - 1, - "%s-TxRx-%d", netdev->name, entry->entry); - else - /* skip this unused q_vector */ - continue; - - err = request_irq(entry->vector, wx_msix_clean_rings, 0, - q_vector->name, q_vector); - if (err) { - wx_err(wx, "request_irq failed for MSIX interrupt %s Error: %d\n", - q_vector->name, err); - goto free_queue_irqs; - } - } - - return 0; - -free_queue_irqs: - while (vector) { - vector--; - free_irq(wx->msix_q_entries[vector].vector, - wx->q_vector[vector]); - } - wx_reset_interrupt_capability(wx); - return err; -} - -/** - * txgbe_request_irq - initialize interrupts - * @wx: board private structure - * - * Attempt to configure interrupts using the best available - * capabilities of the hardware and kernel. - **/ -static int txgbe_request_irq(struct wx *wx) -{ - struct net_device *netdev = wx->netdev; - struct pci_dev *pdev = wx->pdev; - int err; - - if (pdev->msix_enabled) - err = txgbe_request_msix_irqs(wx); - else if (pdev->msi_enabled) - err = request_irq(wx->pdev->irq, &txgbe_intr, 0, - netdev->name, wx); - else - err = request_irq(wx->pdev->irq, &txgbe_intr, IRQF_SHARED, - netdev->name, wx); - - if (err) - wx_err(wx, "request_irq failed, Error %d\n", err); - - return err; -} - static void txgbe_up_complete(struct wx *wx) { struct net_device *netdev = wx->netdev;