From patchwork Mon Mar 24 02:00:28 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "mengyuanlou@net-swift.com" X-Patchwork-Id: 14026744 X-Patchwork-Delegate: kuba@kernel.org Received: from smtpbgbr2.qq.com (smtpbgbr2.qq.com [54.207.22.56]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 788785BAF0 for ; Mon, 24 Mar 2025 02:01:27 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=54.207.22.56 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742781691; cv=none; b=Y/aJyR6zqkPIfj69ysdN4/E3VHAMMV89Qf8M7GxF2I+vqI9/g29BtO87Fckv3GGlox5wXydwNZKdzoxEQZylGMlAd4h6aR0YGGqBJ2fSgVAidj5gqUWYgfsdTfv5fNIbbZsIQGbkCfzWGO+7d5d+bRk0+zZceb8EcDqO1VI1p4A= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742781691; c=relaxed/simple; bh=vonyUNNLTOX2+ULHcPkFzCbjVig7weYuDDOsbKrIKFY=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=h861KrJJyICxls9c8bU6oCyj+RI3Ee18zGEMh5pKodPgDWBQWk+Zujo2YpMtHuFOspImB508TkSjsrpe41j6vFI3cJI27MkCHhqySeOXIVYEGG/Z7YXNbHoBAt7Sp5sjBErQp5iBktHXPsonxZuXidzLnLTmsxtPhGavHBc71B8= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=net-swift.com; spf=pass smtp.mailfrom=net-swift.com; arc=none smtp.client-ip=54.207.22.56 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=net-swift.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=net-swift.com X-QQ-mid: bizesmtpsz6t1742781648tcv42c9 X-QQ-Originating-IP: 9DzjUFN/FteGN4Zbl8ydwCjbS0rXNkGVr26Cwx7PyLc= Received: from localhost.localdomain ( [60.186.241.229]) by bizesmtp.qq.com (ESMTP) with id ; Mon, 24 Mar 2025 10:00:45 +0800 (CST) X-QQ-SSF: 0001000000000000000000000000000 X-QQ-GoodBg: 2 X-BIZMAIL-ID: 6330068023074371164 From: Mengyuan Lou To: netdev@vger.kernel.org Cc: kuba@kernel.org, horms@kernel.org, jiawenwu@trustnetic.com, duanqiangwen@net-swift.com, Mengyuan Lou Subject: [RESEND,PATCH net-next v9 1/6] net: libwx: Add mailbox api for wangxun pf drivers Date: Mon, 24 Mar 2025 10:00:28 +0800 Message-ID: X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250324020033.36225-1-mengyuanlou@net-swift.com> References: <20250324020033.36225-1-mengyuanlou@net-swift.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-QQ-SENDSIZE: 520 Feedback-ID: bizesmtpsz:net-swift.com:qybglogicsvrsz:qybglogicsvrsz4a-0 X-QQ-XMAILINFO: M0vknKB9I1DpVPK/hUTmvAeH4WipyEHfF+WiKd+9W1luhisAJUBXNpFq GJ8G9kKtbo0u0mwW9iJp+Vl2ydTkHVUmgjSVyZPL+pGoId8Ja9IBWAH0AogVql0TzQQseBO DwLUgDHs8+cK6ku3QtT/LO9O9Wajwsxcz54XUAszyZhvq9Iv1lncdsj0iAKNcsq1bjMdBaz B0YpoQET6UI8r7Th+bb53HrmWvpct3xWDLczY/kJUr9ct3nnaFKrZFlhIz+dMdduUfpBfVH zEcvJYgbGnMQsaYH891ZlNj9LwXdlRr1WojH3S1xezu3AQ2OGrEGeTueslwNz7b3sd9FegN GcJ8cRFVvxTNUPOHb3x6xUJOuxKSK/6wejkmM38OmW+xNu5UKrZw8ea+7GQmAqMpvUo3Ydf 25/ZABghl1l3tm1+syIhYrllbDg3TZ0a1lDZV3CI1cyfuGuszIvZEpIyNfkHk4EKpt/YBRg 7svGiLPg59UQ3rwlr+sHcOyHp5mXEaHnziQuG0jwNVr+i1eP2wL5nrIutJ2Cj9r5ROJGRbN 9AMWMO1Fi6LWE99tDUeNyvtaFCDV0aGFRUg2vbOeIMyZfsL7RbejY1/RmFjXoJdWYGDlEuS TugRFWX37Ww2kgdl7U1QkD3/pQ4bDlkDX9n0yQdAL7qptbkLlyyA5MDIV6azeZNnH7SLedY K+ut6YDGngn7WBceMHJq0v9f2e08CNRAaOzplVckWbB6vJND8RrnHovPBsbCSO9PdqvBoGY IwuctpfbthBgV6+VWCwUDa9yKF839pXhakx1gbBBvYPeI2WZhd0HeVB6GbsqJKcoXdu8CSf U8D9mEuKCMg2cfJGpAHIxIzMQfJ6Pi0jXlV6He5uAS/QZ7IjZnU0JI7kvfie3kLyArXJxHh xqUt5ewhSYq3T4VsuulqlhbiawAmLoevwCtof4n14LEkSWv5KT4XQdp6e4uzWsN+BNAwa42 L/WkEcAjc1CP+VNsQ34/Aqr3/WwGuZAIhHCCtlv11RlKS9rECYL73oPypN4YLJoL4BMOBgd uRsNqkL5lZRE0yvdVAbNFm5bFthHE= X-QQ-XMRINFO: NyFYKkN4Ny6FSmKK/uo/jdU= X-QQ-RECHKSPAM: 0 X-Patchwork-Delegate: kuba@kernel.org Implements the mailbox interfaces for wangxun pf drivers ngbe and txgbe. Signed-off-by: Mengyuan Lou Reviewed-by: Simon Horman --- drivers/net/ethernet/wangxun/libwx/Makefile | 2 +- drivers/net/ethernet/wangxun/libwx/wx_mbx.c | 176 +++++++++++++++++++ drivers/net/ethernet/wangxun/libwx/wx_mbx.h | 32 ++++ drivers/net/ethernet/wangxun/libwx/wx_type.h | 8 + 4 files changed, 217 insertions(+), 1 deletion(-) create mode 100644 drivers/net/ethernet/wangxun/libwx/wx_mbx.c create mode 100644 drivers/net/ethernet/wangxun/libwx/wx_mbx.h diff --git a/drivers/net/ethernet/wangxun/libwx/Makefile b/drivers/net/ethernet/wangxun/libwx/Makefile index e9f0f1f2309b..cd1675ef3253 100644 --- a/drivers/net/ethernet/wangxun/libwx/Makefile +++ b/drivers/net/ethernet/wangxun/libwx/Makefile @@ -4,4 +4,4 @@ obj-$(CONFIG_LIBWX) += libwx.o -libwx-objs := wx_hw.o wx_lib.o wx_ethtool.o wx_ptp.o +libwx-objs := wx_hw.o wx_lib.o wx_ethtool.o wx_ptp.o wx_mbx.o diff --git a/drivers/net/ethernet/wangxun/libwx/wx_mbx.c b/drivers/net/ethernet/wangxun/libwx/wx_mbx.c new file mode 100644 index 000000000000..73af5f11c3bd --- /dev/null +++ b/drivers/net/ethernet/wangxun/libwx/wx_mbx.c @@ -0,0 +1,176 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (c) 2015 - 2025 Beijing WangXun Technology Co., Ltd. */ + +#include +#include "wx_type.h" +#include "wx_mbx.h" + +/** + * wx_obtain_mbx_lock_pf - obtain mailbox lock + * @wx: pointer to the HW structure + * @vf: the VF index + * + * Return: return 0 on success and -EBUSY on failure + **/ +static int wx_obtain_mbx_lock_pf(struct wx *wx, u16 vf) +{ + int count = 5; + u32 mailbox; + + while (count--) { + /* Take ownership of the buffer */ + wr32(wx, WX_PXMAILBOX(vf), WX_PXMAILBOX_PFU); + + /* reserve mailbox for vf use */ + mailbox = rd32(wx, WX_PXMAILBOX(vf)); + if (mailbox & WX_PXMAILBOX_PFU) + return 0; + else if (count) + udelay(10); + } + wx_err(wx, "Failed to obtain mailbox lock for PF%d", vf); + + return -EBUSY; +} + +static int wx_check_for_bit_pf(struct wx *wx, u32 mask, int index) +{ + u32 mbvficr = rd32(wx, WX_MBVFICR(index)); + + if (!(mbvficr & mask)) + return -EBUSY; + wr32(wx, WX_MBVFICR(index), mask); + + return 0; +} + +/** + * wx_check_for_ack_pf - checks to see if the VF has acked + * @wx: pointer to the HW structure + * @vf: the VF index + * + * Return: return 0 if the VF has set the status bit or else -EBUSY + **/ +int wx_check_for_ack_pf(struct wx *wx, u16 vf) +{ + u32 index = vf / 16, vf_bit = vf % 16; + + return wx_check_for_bit_pf(wx, + FIELD_PREP(WX_MBVFICR_VFACK_MASK, + BIT(vf_bit)), + index); +} + +/** + * wx_check_for_msg_pf - checks to see if the VF has sent mail + * @wx: pointer to the HW structure + * @vf: the VF index + * + * Return: return 0 if the VF has got req bit or else -EBUSY + **/ +int wx_check_for_msg_pf(struct wx *wx, u16 vf) +{ + u32 index = vf / 16, vf_bit = vf % 16; + + return wx_check_for_bit_pf(wx, + FIELD_PREP(WX_MBVFICR_VFREQ_MASK, + BIT(vf_bit)), + index); +} + +/** + * wx_write_mbx_pf - Places a message in the mailbox + * @wx: pointer to the HW structure + * @msg: The message buffer + * @size: Length of buffer + * @vf: the VF index + * + * Return: return 0 on success and -EINVAL/-EBUSY on failure + **/ +int wx_write_mbx_pf(struct wx *wx, u32 *msg, u16 size, u16 vf) +{ + struct wx_mbx_info *mbx = &wx->mbx; + int ret, i; + + /* mbx->size is up to 15 */ + if (size > mbx->size) { + wx_err(wx, "Invalid mailbox message size %d", size); + return -EINVAL; + } + + /* lock the mailbox to prevent pf/vf race condition */ + ret = wx_obtain_mbx_lock_pf(wx, vf); + if (ret) + return ret; + + /* flush msg and acks as we are overwriting the message buffer */ + wx_check_for_msg_pf(wx, vf); + wx_check_for_ack_pf(wx, vf); + + /* copy the caller specified message to the mailbox memory buffer */ + for (i = 0; i < size; i++) + wr32a(wx, WX_PXMBMEM(vf), i, msg[i]); + + /* Interrupt VF to tell it a message has been sent and release buffer */ + /* set mirrored mailbox flags */ + wr32a(wx, WX_PXMBMEM(vf), WX_VXMAILBOX_SIZE, WX_PXMAILBOX_STS); + wr32(wx, WX_PXMAILBOX(vf), WX_PXMAILBOX_STS); + + return 0; +} + +/** + * wx_read_mbx_pf - Read a message from the mailbox + * @wx: pointer to the HW structure + * @msg: The message buffer + * @size: Length of buffer + * @vf: the VF index + * + * Return: return 0 on success and -EBUSY on failure + **/ +int wx_read_mbx_pf(struct wx *wx, u32 *msg, u16 size, u16 vf) +{ + struct wx_mbx_info *mbx = &wx->mbx; + int ret; + u16 i; + + /* limit read to size of mailbox and mbx->size is up to 15 */ + if (size > mbx->size) + size = mbx->size; + + /* lock the mailbox to prevent pf/vf race condition */ + ret = wx_obtain_mbx_lock_pf(wx, vf); + if (ret) + return ret; + + for (i = 0; i < size; i++) + msg[i] = rd32a(wx, WX_PXMBMEM(vf), i); + + /* Acknowledge the message and release buffer */ + /* set mirrored mailbox flags */ + wr32a(wx, WX_PXMBMEM(vf), WX_VXMAILBOX_SIZE, WX_PXMAILBOX_ACK); + wr32(wx, WX_PXMAILBOX(vf), WX_PXMAILBOX_ACK); + + return 0; +} + +/** + * wx_check_for_rst_pf - checks to see if the VF has reset + * @wx: pointer to the HW structure + * @vf: the VF index + * + * Return: return 0 on success and -EBUSY on failure + **/ +int wx_check_for_rst_pf(struct wx *wx, u16 vf) +{ + u32 reg_offset = WX_VF_REG_OFFSET(vf); + u32 vf_shift = WX_VF_IND_SHIFT(vf); + u32 vflre = 0; + + vflre = rd32(wx, WX_VFLRE(reg_offset)); + if (!(vflre & BIT(vf_shift))) + return -EBUSY; + wr32(wx, WX_VFLREC(reg_offset), BIT(vf_shift)); + + return 0; +} diff --git a/drivers/net/ethernet/wangxun/libwx/wx_mbx.h b/drivers/net/ethernet/wangxun/libwx/wx_mbx.h new file mode 100644 index 000000000000..c09b25f3e43d --- /dev/null +++ b/drivers/net/ethernet/wangxun/libwx/wx_mbx.h @@ -0,0 +1,32 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* Copyright (c) 2015 - 2025 Beijing WangXun Technology Co., Ltd. */ +#ifndef _WX_MBX_H_ +#define _WX_MBX_H_ + +#define WX_VXMAILBOX_SIZE 15 + +/* PF Registers */ +#define WX_PXMAILBOX(i) (0x600 + (4 * (i))) /* i=[0,63] */ +#define WX_PXMAILBOX_STS BIT(0) /* Initiate message send to VF */ +#define WX_PXMAILBOX_ACK BIT(1) /* Ack message recv'd from VF */ +#define WX_PXMAILBOX_PFU BIT(3) /* PF owns the mailbox buffer */ + +#define WX_PXMBMEM(i) (0x5000 + (64 * (i))) /* i=[0,63] */ + +#define WX_VFLRE(i) (0x4A0 + (4 * (i))) /* i=[0,1] */ +#define WX_VFLREC(i) (0x4A8 + (4 * (i))) /* i=[0,1] */ + +/* SR-IOV specific macros */ +#define WX_MBVFICR(i) (0x480 + (4 * (i))) /* i=[0,3] */ +#define WX_MBVFICR_VFREQ_MASK GENMASK(15, 0) +#define WX_MBVFICR_VFACK_MASK GENMASK(31, 16) + +#define WX_VT_MSGINFO_MASK GENMASK(23, 16) + +int wx_write_mbx_pf(struct wx *wx, u32 *msg, u16 size, u16 vf); +int wx_read_mbx_pf(struct wx *wx, u32 *msg, u16 size, u16 vf); +int wx_check_for_rst_pf(struct wx *wx, u16 mbx_id); +int wx_check_for_msg_pf(struct wx *wx, u16 mbx_id); +int wx_check_for_ack_pf(struct wx *wx, u16 mbx_id); + +#endif /* _WX_MBX_H_ */ diff --git a/drivers/net/ethernet/wangxun/libwx/wx_type.h b/drivers/net/ethernet/wangxun/libwx/wx_type.h index 5b230ecbbabb..18287b0ee040 100644 --- a/drivers/net/ethernet/wangxun/libwx/wx_type.h +++ b/drivers/net/ethernet/wangxun/libwx/wx_type.h @@ -22,6 +22,9 @@ #define WX_PCI_LINK_STATUS 0xB2 /**************** Global Registers ****************************/ +#define WX_VF_REG_OFFSET(_v) FIELD_GET(GENMASK(15, 5), (_v)) +#define WX_VF_IND_SHIFT(_v) FIELD_GET(GENMASK(4, 0), (_v)) + /* chip control Registers */ #define WX_MIS_PWR 0x10000 #define WX_MIS_RST 0x1000C @@ -779,6 +782,10 @@ struct wx_bus_info { u16 device; }; +struct wx_mbx_info { + u16 size; +}; + struct wx_thermal_sensor_data { s16 temp; s16 alarm_thresh; @@ -1129,6 +1136,7 @@ struct wx { struct pci_dev *pdev; struct net_device *netdev; struct wx_bus_info bus; + struct wx_mbx_info mbx; struct wx_mac_info mac; enum em_mac_type mac_type; enum sp_media_type media_type;