From patchwork Mon Dec 30 10:15:29 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: tianx X-Patchwork-Id: 13923200 X-Patchwork-Delegate: kuba@kernel.org Received: from va-2-60.ptr.blmpb.com (va-2-60.ptr.blmpb.com [209.127.231.60]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id CCBFE2B9B9 for ; Mon, 30 Dec 2024 10:15:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.127.231.60 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1735553746; cv=none; b=RgJFzck1GeYr6wPj09KhMu+1TYNvmqk64haDQLlJY+fKvY2n8qPT+LgUn9RhTgvet1ClWUjsWOestiNTo+IBgVgd0Ciu9yKS+vgt/lO7UgSAbHKtx9atNSIZS72arBfHaRMRU3tj0K5Z0xnvOn29f6i+F/+Q7WknCHaP421w3lg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1735553746; c=relaxed/simple; bh=4H+m9357pbeTSBm1fn/gK9O5ETBa1myp2vPLbHfGDx4=; 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Mon, 30 Dec 2024 18:15:29 +0800 Message-Id: <20241230101528.3836531-9-tianx@yunsilicon.com> X-Patchwork-Delegate: kuba@kernel.org Build a basic netdevice driver Co-developed-by: Honggang Wei Signed-off-by: Honggang Wei Co-developed-by: Lei Yan Signed-off-by: Lei Yan Signed-off-by: Xin Tian --- drivers/net/ethernet/yunsilicon/Makefile | 2 +- .../ethernet/yunsilicon/xsc/common/xsc_core.h | 1 + .../net/ethernet/yunsilicon/xsc/net/main.c | 116 ++++++++++++++++++ .../net/ethernet/yunsilicon/xsc/net/xsc_eth.h | 16 +++ .../yunsilicon/xsc/net/xsc_eth_common.h | 15 +++ 5 files changed, 149 insertions(+), 1 deletion(-) create mode 100644 drivers/net/ethernet/yunsilicon/xsc/net/main.c create mode 100644 drivers/net/ethernet/yunsilicon/xsc/net/xsc_eth.h create mode 100644 drivers/net/ethernet/yunsilicon/xsc/net/xsc_eth_common.h diff --git a/drivers/net/ethernet/yunsilicon/Makefile b/drivers/net/ethernet/yunsilicon/Makefile index 6fc8259a7..65b9a6265 100644 --- a/drivers/net/ethernet/yunsilicon/Makefile +++ b/drivers/net/ethernet/yunsilicon/Makefile @@ -4,5 +4,5 @@ # Makefile for the Yunsilicon device drivers. # -# obj-$(CONFIG_YUNSILICON_XSC_ETH) += xsc/net/ +obj-$(CONFIG_YUNSILICON_XSC_ETH) += xsc/net/ obj-$(CONFIG_YUNSILICON_XSC_PCI) += xsc/pci/ \ No newline at end of file diff --git a/drivers/net/ethernet/yunsilicon/xsc/common/xsc_core.h b/drivers/net/ethernet/yunsilicon/xsc/common/xsc_core.h index 2eb9c3c80..ee43b5f47 100644 --- a/drivers/net/ethernet/yunsilicon/xsc/common/xsc_core.h +++ b/drivers/net/ethernet/yunsilicon/xsc/common/xsc_core.h @@ -429,6 +429,7 @@ struct xsc_core_device { struct pci_dev *pdev; struct device *device; struct xsc_priv priv; + void *netdev; void *eth_priv; struct xsc_dev_resource *dev_res; diff --git a/drivers/net/ethernet/yunsilicon/xsc/net/main.c b/drivers/net/ethernet/yunsilicon/xsc/net/main.c new file mode 100644 index 000000000..8d29e88cf --- /dev/null +++ b/drivers/net/ethernet/yunsilicon/xsc/net/main.c @@ -0,0 +1,116 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (C) 2021-2025, Shanghai Yunsilicon Technology Co., Ltd. + * All rights reserved. + */ + +#include +#include +#include "common/xsc_core.h" +#include "xsc_eth_common.h" +#include "xsc_eth.h" + +static int xsc_get_max_num_channels(struct xsc_core_device *xdev) +{ + return min_t(int, xdev->dev_res->eq_table.num_comp_vectors, + XSC_ETH_MAX_NUM_CHANNELS); +} + +static void *xsc_eth_add(struct xsc_core_device *xdev) +{ + struct xsc_adapter *adapter; + struct net_device *netdev; + int num_chl, num_tc; + int err; + + num_chl = xsc_get_max_num_channels(xdev); + num_tc = xdev->caps.max_tc; + + netdev = alloc_etherdev_mqs(sizeof(struct xsc_adapter), + num_chl * num_tc, num_chl); + if (!netdev) { + pr_err("alloc_etherdev_mqs failed, txq=%d, rxq=%d\n", + (num_chl * num_tc), num_chl); + return NULL; + } + + netdev->dev.parent = &xdev->pdev->dev; + adapter = netdev_priv(netdev); + adapter->netdev = netdev; + adapter->pdev = xdev->pdev; + adapter->dev = &adapter->pdev->dev; + adapter->xdev = (void *)xdev; + xdev->eth_priv = adapter; + + err = register_netdev(netdev); + if (err) { + netdev_err(netdev, "register_netdev failed, err=%d\n", err); + goto err_free_netdev; + } + + xdev->netdev = (void *)netdev; + + return adapter; + +err_free_netdev: + free_netdev(netdev); + + return NULL; +} + +static void xsc_eth_remove(struct xsc_core_device *xdev, void *context) +{ + struct xsc_adapter *adapter; + + if (!xdev) + return; + + adapter = xdev->eth_priv; + if (!adapter) { + netdev_err(adapter->netdev, "failed! adapter is null\n"); + return; + } + + unregister_netdev(adapter->netdev); + + free_netdev(adapter->netdev); + + xdev->netdev = NULL; + xdev->eth_priv = NULL; +} + +static struct xsc_interface xsc_interface = { + .add = xsc_eth_add, + .remove = xsc_eth_remove, + .event = NULL, + .protocol = XSC_INTERFACE_PROTOCOL_ETH, +}; + +static void xsc_remove_eth_driver(void) +{ + xsc_unregister_interface(&xsc_interface); +} + +static __init int xsc_net_driver_init(void) +{ + int ret; + + ret = xsc_register_interface(&xsc_interface); + if (ret != 0) { + pr_err("failed to register interface\n"); + goto out; + } + return 0; +out: + return -1; +} + +static __exit void xsc_net_driver_exit(void) +{ + xsc_remove_eth_driver(); +} + +module_init(xsc_net_driver_init); +module_exit(xsc_net_driver_exit); + +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("Yunsilicon XSC ethernet driver"); diff --git a/drivers/net/ethernet/yunsilicon/xsc/net/xsc_eth.h b/drivers/net/ethernet/yunsilicon/xsc/net/xsc_eth.h new file mode 100644 index 000000000..0c70c0d59 --- /dev/null +++ b/drivers/net/ethernet/yunsilicon/xsc/net/xsc_eth.h @@ -0,0 +1,16 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* Copyright (C) 2021-2025, Shanghai Yunsilicon Technology Co., Ltd. + * All rights reserved. + */ + +#ifndef __XSC_ETH_H +#define __XSC_ETH_H + +struct xsc_adapter { + struct net_device *netdev; + struct pci_dev *pdev; + struct device *dev; + struct xsc_core_device *xdev; +}; + +#endif /* __XSC_ETH_H */ diff --git a/drivers/net/ethernet/yunsilicon/xsc/net/xsc_eth_common.h b/drivers/net/ethernet/yunsilicon/xsc/net/xsc_eth_common.h new file mode 100644 index 000000000..b5640f05d --- /dev/null +++ b/drivers/net/ethernet/yunsilicon/xsc/net/xsc_eth_common.h @@ -0,0 +1,15 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* Copyright (C) 2021-2025, Shanghai Yunsilicon Technology Co., Ltd. + * All rights reserved. + */ + +#ifndef __XSC_ETH_COMMON_H +#define __XSC_ETH_COMMON_H + +#define XSC_LOG_INDIR_RQT_SIZE 0x8 + +#define XSC_INDIR_RQT_SIZE BIT(XSC_LOG_INDIR_RQT_SIZE) +#define XSC_ETH_MIN_NUM_CHANNELS 2 +#define XSC_ETH_MAX_NUM_CHANNELS XSC_INDIR_RQT_SIZE + +#endif