From patchwork Wed Oct 12 10:35:31 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jiawen Wu X-Patchwork-Id: 13004952 X-Patchwork-Delegate: kuba@kernel.org Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 45B16C4332F for ; Wed, 12 Oct 2022 10:37:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229715AbiJLKhK (ORCPT ); Wed, 12 Oct 2022 06:37:10 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49136 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229734AbiJLKhI (ORCPT ); Wed, 12 Oct 2022 06:37:08 -0400 Received: from smtpbguseast1.qq.com (smtpbguseast1.qq.com [54.204.34.129]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1543DBD061 for ; Wed, 12 Oct 2022 03:37:05 -0700 (PDT) X-QQ-mid: bizesmtp64t1665570956tow6rgln Received: from wxdbg.localdomain.com ( [183.129.236.74]) by bizesmtp.qq.com (ESMTP) with id ; Wed, 12 Oct 2022 18:35:55 +0800 (CST) X-QQ-SSF: 01400000000000H0U000B00A0000000 X-QQ-FEAT: DRnj/z+Sqaf2R5Zo+VAcsfcCjkKeTTQiX+/PD2Q/crx+DeLIy5Qiq/yZ6Ql43 S1zMsZTi7DdlofFZ3IV25Wicsi3itcSO9pyOtS/X6/XQCPd9PikL03YEgrZS8yMpmx3eorx JAQk8kQkqSZavmTTfuMBXKHqlofOrlgoW3RlZMIrjk7+pwYgKNvtLEOxFmNeUHU3NKrrCZY UhILPF00WCrDVv0UEPctXfJmcKDKk6TsrJQUDdAfsZw9aIX3BMKKv5UTw/0L5RD0t4gY1VI L+lknTYPAqAWR0tOtDGfxZ2VdpnblI59V30dMABIB4GhXhnDLjkupXHv3NfFCawXLuDRqyx KIuaip/jP68UaI5apswNnrrwb5quc/36YBM6midBkw4y931dWc/GaFoG6IhB9jy+PWIw3Zp aGb/1HGMdh0= X-QQ-GoodBg: 2 From: Jiawen Wu To: netdev@vger.kernel.org Cc: mengyuanlou@net-swift.com, Jiawen Wu Subject: [PATCH net-next v4 1/3] net: txgbe: Store PCI info Date: Wed, 12 Oct 2022 18:35:31 +0800 Message-Id: <20221012103533.738954-2-jiawenwu@trustnetic.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20221012103533.738954-1-jiawenwu@trustnetic.com> References: <20221012103533.738954-1-jiawenwu@trustnetic.com> MIME-Version: 1.0 X-QQ-SENDSIZE: 520 Feedback-ID: bizesmtp:trustnetic.com:qybglogicsvr:qybglogicsvr5 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org Get PCI config space info, set LAN id and check flash status. Signed-off-by: Jiawen Wu --- drivers/net/ethernet/wangxun/Kconfig | 6 ++ drivers/net/ethernet/wangxun/Makefile | 1 + drivers/net/ethernet/wangxun/libwx/Makefile | 7 ++ drivers/net/ethernet/wangxun/libwx/wx_hw.c | 88 +++++++++++++++ drivers/net/ethernet/wangxun/libwx/wx_hw.h | 10 ++ drivers/net/ethernet/wangxun/libwx/wx_type.h | 56 ++++++++++ drivers/net/ethernet/wangxun/txgbe/txgbe.h | 4 + .../net/ethernet/wangxun/txgbe/txgbe_main.c | 101 +++++++++++++++++- .../net/ethernet/wangxun/txgbe/txgbe_type.h | 19 ++-- 9 files changed, 282 insertions(+), 10 deletions(-) create mode 100644 drivers/net/ethernet/wangxun/libwx/Makefile create mode 100644 drivers/net/ethernet/wangxun/libwx/wx_hw.c create mode 100644 drivers/net/ethernet/wangxun/libwx/wx_hw.h create mode 100644 drivers/net/ethernet/wangxun/libwx/wx_type.h diff --git a/drivers/net/ethernet/wangxun/Kconfig b/drivers/net/ethernet/wangxun/Kconfig index f5d43d8c9629..565fa826b056 100644 --- a/drivers/net/ethernet/wangxun/Kconfig +++ b/drivers/net/ethernet/wangxun/Kconfig @@ -16,6 +16,11 @@ config NET_VENDOR_WANGXUN if NET_VENDOR_WANGXUN +config LIBWX + tristate + help + Common library for Wangxun(R) Ethernet drivers. + config NGBE tristate "Wangxun(R) GbE PCI Express adapters support" depends on PCI @@ -32,6 +37,7 @@ config NGBE config TXGBE tristate "Wangxun(R) 10GbE PCI Express adapters support" depends on PCI + select LIBWX help This driver supports Wangxun(R) 10GbE PCI Express family of adapters. diff --git a/drivers/net/ethernet/wangxun/Makefile b/drivers/net/ethernet/wangxun/Makefile index ac3fb06b233c..ca19311dbe38 100644 --- a/drivers/net/ethernet/wangxun/Makefile +++ b/drivers/net/ethernet/wangxun/Makefile @@ -3,5 +3,6 @@ # Makefile for the Wangxun network device drivers. # +obj-$(CONFIG_LIBWX) += libwx/ obj-$(CONFIG_TXGBE) += txgbe/ obj-$(CONFIG_NGBE) += ngbe/ diff --git a/drivers/net/ethernet/wangxun/libwx/Makefile b/drivers/net/ethernet/wangxun/libwx/Makefile new file mode 100644 index 000000000000..1ed5e23af944 --- /dev/null +++ b/drivers/net/ethernet/wangxun/libwx/Makefile @@ -0,0 +1,7 @@ +# SPDX-License-Identifier: GPL-2.0 +# Copyright (c) 2015 - 2022 Beijing WangXun Technology Co., Ltd. +# + +obj-$(CONFIG_LIBWX) += libwx.o + +libwx-objs := wx_hw.o diff --git a/drivers/net/ethernet/wangxun/libwx/wx_hw.c b/drivers/net/ethernet/wangxun/libwx/wx_hw.c new file mode 100644 index 000000000000..fed51c2f3071 --- /dev/null +++ b/drivers/net/ethernet/wangxun/libwx/wx_hw.c @@ -0,0 +1,88 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (c) 2015 - 2022 Beijing WangXun Technology Co., Ltd. */ + +#include +#include + +#include "wx_type.h" +#include "wx_hw.h" + +/* cmd_addr is used for some special command: + * 1. to be sector address, when implemented erase sector command + * 2. to be flash address when implemented read, write flash address + */ +static int wx_fmgr_cmd_op(struct wx_hw *wxhw, u32 cmd, u32 cmd_addr) +{ + u32 cmd_val = 0, val = 0; + + cmd_val = WX_SPI_CMD_CMD(cmd) | + WX_SPI_CMD_CLK(WX_SPI_CLK_DIV) | + cmd_addr; + wr32(wxhw, WX_SPI_CMD, cmd_val); + + return read_poll_timeout(rd32, val, (val & 0x1), 10, 100000, + false, wxhw, WX_SPI_STATUS); +} + +static int wx_flash_read_dword(struct wx_hw *wxhw, u32 addr, u32 *data) +{ + int ret = 0; + + ret = wx_fmgr_cmd_op(wxhw, WX_SPI_CMD_READ_DWORD, addr); + if (ret < 0) + return ret; + + *data = rd32(wxhw, WX_SPI_DATA); + + return ret; +} + +int wx_check_flash_load(struct wx_hw *hw, u32 check_bit) +{ + u32 reg = 0; + int err = 0; + + /* if there's flash existing */ + if (!(rd32(hw, WX_SPI_STATUS) & + WX_SPI_STATUS_FLASH_BYPASS)) { + /* wait hw load flash done */ + err = read_poll_timeout(rd32, reg, !(reg & check_bit), 20000, 2000000, + false, hw, WX_SPI_ILDR_STATUS); + if (err < 0) + wx_err(hw, "Check flash load timeout.\n"); + } + + return err; +} +EXPORT_SYMBOL(wx_check_flash_load); + +int wx_sw_init(struct wx_hw *wxhw) +{ + struct pci_dev *pdev = wxhw->pdev; + u32 ssid = 0; + int err = 0; + + wxhw->vendor_id = pdev->vendor; + wxhw->device_id = pdev->device; + wxhw->revision_id = pdev->revision; + wxhw->oem_svid = pdev->subsystem_vendor; + wxhw->oem_ssid = pdev->subsystem_device; + wxhw->bus.device = PCI_SLOT(pdev->devfn); + wxhw->bus.func = PCI_FUNC(pdev->devfn); + + if (wxhw->oem_svid == PCI_VENDOR_ID_WANGXUN) { + wxhw->subsystem_vendor_id = pdev->subsystem_vendor; + wxhw->subsystem_device_id = pdev->subsystem_device; + } else { + err = wx_flash_read_dword(wxhw, 0xfffdc, &ssid); + if (!err) + wxhw->subsystem_device_id = swab16((u16)ssid); + + return err; + } + + return 0; +} +EXPORT_SYMBOL(wx_sw_init); + +MODULE_LICENSE("GPL"); diff --git a/drivers/net/ethernet/wangxun/libwx/wx_hw.h b/drivers/net/ethernet/wangxun/libwx/wx_hw.h new file mode 100644 index 000000000000..42e95283242c --- /dev/null +++ b/drivers/net/ethernet/wangxun/libwx/wx_hw.h @@ -0,0 +1,10 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* Copyright (c) 2015 - 2022 Beijing WangXun Technology Co., Ltd. */ + +#ifndef _WX_HW_H_ +#define _WX_HW_H_ + +int wx_check_flash_load(struct wx_hw *hw, u32 check_bit); +int wx_sw_init(struct wx_hw *wxhw); + +#endif /* _WX_HW_H_ */ diff --git a/drivers/net/ethernet/wangxun/libwx/wx_type.h b/drivers/net/ethernet/wangxun/libwx/wx_type.h new file mode 100644 index 000000000000..fa06443ca4f5 --- /dev/null +++ b/drivers/net/ethernet/wangxun/libwx/wx_type.h @@ -0,0 +1,56 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* Copyright (c) 2015 - 2022 Beijing WangXun Technology Co., Ltd. */ + +#ifndef _WX_TYPE_H_ +#define _WX_TYPE_H_ + +/* Vendor ID */ +#ifndef PCI_VENDOR_ID_WANGXUN +#define PCI_VENDOR_ID_WANGXUN 0x8088 +#endif + +/* FMGR Registers */ +#define WX_SPI_CMD 0x10104 +#define WX_SPI_CMD_READ_DWORD 0x1 +#define WX_SPI_CLK_DIV 0x3 +#define WX_SPI_CMD_CMD(_v) (((_v) & 0x7) << 28) +#define WX_SPI_CMD_CLK(_v) (((_v) & 0x7) << 25) +#define WX_SPI_CMD_ADDR(_v) (((_v) & 0xFFFFFF)) +#define WX_SPI_DATA 0x10108 +#define WX_SPI_DATA_BYPASS BIT(31) +#define WX_SPI_DATA_STATUS(_v) (((_v) & 0xFF) << 16) +#define WX_SPI_DATA_OP_DONE BIT(0) +#define WX_SPI_STATUS 0x1010C +#define WX_SPI_STATUS_OPDONE BIT(0) +#define WX_SPI_STATUS_FLASH_BYPASS BIT(31) +#define WX_SPI_ILDR_STATUS 0x10120 + +/* Bus parameters */ +struct wx_bus_info { + u8 func; + u16 device; +}; + +struct wx_hw { + u8 __iomem *hw_addr; + struct pci_dev *pdev; + struct wx_bus_info bus; + u16 device_id; + u16 vendor_id; + u16 subsystem_device_id; + u16 subsystem_vendor_id; + u8 revision_id; + u16 oem_ssid; + u16 oem_svid; +}; + +/** + * register operations + **/ +#define wr32(a, reg, value) writel((value), ((a)->hw_addr + (reg))) +#define rd32(a, reg) readl((a)->hw_addr + (reg)) + +#define wx_err(wxhw, fmt, arg...) \ + dev_err(&(wxhw)->pdev->dev, fmt, ##arg) + +#endif /* _WX_TYPE_H_ */ diff --git a/drivers/net/ethernet/wangxun/txgbe/txgbe.h b/drivers/net/ethernet/wangxun/txgbe/txgbe.h index 38ddbde0ed0f..9a97b85be3ac 100644 --- a/drivers/net/ethernet/wangxun/txgbe/txgbe.h +++ b/drivers/net/ethernet/wangxun/txgbe/txgbe.h @@ -17,6 +17,10 @@ struct txgbe_adapter { /* OS defined structs */ struct net_device *netdev; struct pci_dev *pdev; + + /* structs defined in txgbe_type.h */ + struct txgbe_hw hw; + u16 msg_enable; }; extern char txgbe_driver_name[]; diff --git a/drivers/net/ethernet/wangxun/txgbe/txgbe_main.c b/drivers/net/ethernet/wangxun/txgbe/txgbe_main.c index d3b9f73ecba4..71ea197fe299 100644 --- a/drivers/net/ethernet/wangxun/txgbe/txgbe_main.c +++ b/drivers/net/ethernet/wangxun/txgbe/txgbe_main.c @@ -9,6 +9,8 @@ #include #include +#include "../libwx/wx_type.h" +#include "../libwx/wx_hw.h" #include "txgbe.h" char txgbe_driver_name[] = "txgbe"; @@ -30,6 +32,69 @@ static const struct pci_device_id txgbe_pci_tbl[] = { #define DEFAULT_DEBUG_LEVEL_SHIFT 3 +static void txgbe_check_minimum_link(struct txgbe_adapter *adapter) +{ + struct pci_dev *pdev; + + pdev = adapter->pdev; + pcie_print_link_status(pdev); +} + +/** + * txgbe_enumerate_functions - Get the number of ports this device has + * @adapter: adapter structure + * + * This function enumerates the phsyical functions co-located on a single slot, + * in order to determine how many ports a device has. This is most useful in + * determining the required GT/s of PCIe bandwidth necessary for optimal + * performance. + **/ +static int txgbe_enumerate_functions(struct txgbe_adapter *adapter) +{ + struct pci_dev *entry, *pdev = adapter->pdev; + int physfns = 0; + + list_for_each_entry(entry, &pdev->bus->devices, bus_list) { + /* When the devices on the bus don't all match our device ID, + * we can't reliably determine the correct number of + * functions. This can occur if a function has been direct + * attached to a virtual machine using VT-d. + */ + if (entry->vendor != pdev->vendor || + entry->device != pdev->device) + return -EINVAL; + + physfns++; + } + + return physfns; +} + +/** + * txgbe_sw_init - Initialize general software structures (struct txgbe_adapter) + * @adapter: board private structure to initialize + **/ +static int txgbe_sw_init(struct txgbe_adapter *adapter) +{ + struct pci_dev *pdev = adapter->pdev; + struct txgbe_hw *hw = &adapter->hw; + struct wx_hw *wxhw = &hw->wxhw; + int err; + + wxhw->hw_addr = adapter->io_addr; + wxhw->pdev = pdev; + + /* PCI config space info */ + err = wx_sw_init(wxhw); + if (err < 0) { + netif_err(adapter, probe, adapter->netdev, + "read of internal subsystem device id failed\n"); + return err; + } + + return 0; +} + static void txgbe_dev_shutdown(struct pci_dev *pdev, bool *enable_wake) { struct txgbe_adapter *adapter = pci_get_drvdata(pdev); @@ -67,8 +132,10 @@ static int txgbe_probe(struct pci_dev *pdev, const struct pci_device_id __always_unused *ent) { struct txgbe_adapter *adapter = NULL; + struct txgbe_hw *hw = NULL; + struct wx_hw *wxhw = NULL; struct net_device *netdev; - int err; + int err, expected_gts; err = pci_enable_device_mem(pdev); if (err) @@ -107,6 +174,9 @@ static int txgbe_probe(struct pci_dev *pdev, adapter = netdev_priv(netdev); adapter->netdev = netdev; adapter->pdev = pdev; + hw = &adapter->hw; + wxhw = &hw->wxhw; + adapter->msg_enable = (1 << DEFAULT_DEBUG_LEVEL_SHIFT) - 1; adapter->io_addr = devm_ioremap(&pdev->dev, pci_resource_start(pdev, 0), @@ -116,10 +186,39 @@ static int txgbe_probe(struct pci_dev *pdev, goto err_pci_release_regions; } + strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1); + + /* setup the private structure */ + err = txgbe_sw_init(adapter); + if (err) + goto err_pci_release_regions; + + /* check if flash load is done after hw power up */ + err = wx_check_flash_load(wxhw, TXGBE_SPI_ILDR_STATUS_PERST); + if (err) + goto err_pci_release_regions; + err = wx_check_flash_load(wxhw, TXGBE_SPI_ILDR_STATUS_PWRRST); + if (err) + goto err_pci_release_regions; + netdev->features |= NETIF_F_HIGHDMA; pci_set_drvdata(pdev, adapter); + /* calculate the expected PCIe bandwidth required for optimal + * performance. Note that some older parts will never have enough + * bandwidth due to being older generation PCIe parts. We clamp these + * parts to ensure that no warning is displayed, as this could confuse + * users otherwise. + */ + expected_gts = txgbe_enumerate_functions(adapter) * 10; + + /* don't check link if we failed to enumerate functions */ + if (expected_gts > 0) + txgbe_check_minimum_link(adapter); + else + dev_warn(&pdev->dev, "Failed to enumerate PF devices.\n"); + return 0; err_pci_release_regions: diff --git a/drivers/net/ethernet/wangxun/txgbe/txgbe_type.h b/drivers/net/ethernet/wangxun/txgbe/txgbe_type.h index b2e329f50bae..1d1ead3d3c06 100644 --- a/drivers/net/ethernet/wangxun/txgbe/txgbe_type.h +++ b/drivers/net/ethernet/wangxun/txgbe/txgbe_type.h @@ -4,15 +4,6 @@ #ifndef _TXGBE_TYPE_H_ #define _TXGBE_TYPE_H_ -#include -#include - -/************ txgbe_register.h ************/ -/* Vendor ID */ -#ifndef PCI_VENDOR_ID_WANGXUN -#define PCI_VENDOR_ID_WANGXUN 0x8088 -#endif - /* Device IDs */ #define TXGBE_DEV_ID_SP1000 0x1001 #define TXGBE_DEV_ID_WX1820 0x2001 @@ -54,4 +45,14 @@ /* Revision ID */ #define TXGBE_SP_MPW 1 +/**************** SP Registers ****************************/ +/* FMGR Registers */ +#define TXGBE_SPI_ILDR_STATUS 0x10120 +#define TXGBE_SPI_ILDR_STATUS_PERST BIT(0) /* PCIE_PERST is done */ +#define TXGBE_SPI_ILDR_STATUS_PWRRST BIT(1) /* Power on reset is done */ + +struct txgbe_hw { + struct wx_hw wxhw; +}; + #endif /* _TXGBE_TYPE_H_ */