[PATCH net-next v3 1/6] net: libwx: Add malibox api for wangxun pf drivers

[PATCH net-next v3 1/6] net: libwx: Add malibox api for wangxun pf drivers

[Mengyuan Lou]

Implements the mailbox interfaces for wangxun pf drivers
ngbe and txgbe.

Signed-off-by: Mengyuan Lou <mengyuanlou@net-swift.com>
---
 drivers/net/ethernet/wangxun/libwx/Makefile  |   2 +-
 drivers/net/ethernet/wangxun/libwx/wx_mbx.c  | 191 +++++++++++++++++++
 drivers/net/ethernet/wangxun/libwx/wx_mbx.h  |  32 ++++
 drivers/net/ethernet/wangxun/libwx/wx_type.h |   5 +
 4 files changed, 229 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 42ccd6e4052e..913a978c9032 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
+libwx-objs := wx_hw.o wx_lib.o wx_ethtool.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..26842043630b
--- /dev/null
+++ b/drivers/net/ethernet/wangxun/libwx/wx_mbx.c
@@ -0,0 +1,191 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2015 - 2024 Beijing WangXun Technology Co., Ltd. */
+#include <linux/pci.h>
+#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 SUCCESS if we obtained the mailbox lock
+ **/
+static int wx_obtain_mbx_lock_pf(struct wx *wx, u16 vf)
+{
+	int ret = -EBUSY;
+	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) {
+			ret = 0;
+			break;
+		}
+		udelay(10);
+	}
+
+	if (ret)
+		wx_err(wx, "Failed to obtain mailbox lock for PF%d", vf);
+
+	return ret;
+}
+
+static int wx_check_for_bit_pf(struct wx *wx, u32 mask, int index)
+{
+	u32 mbvficr = rd32(wx, WX_MBVFICR(index));
+	int ret = -EBUSY;
+
+	if (mbvficr & mask) {
+		ret = 0;
+		wr32(wx, WX_MBVFICR(index), mask);
+	}
+
+	return ret;
+}
+
+/**
+ *  wx_check_for_ack_pf - checks to see if the VF has ACKed
+ *  @wx: pointer to the HW structure
+ *  @vf: the VF index
+ *
+ *  returns SUCCESS if the VF has set the Status bit or else ERR_MBX
+ **/
+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);
+}
+EXPORT_SYMBOL(wx_check_for_ack_pf);
+
+/**
+ *  wx_check_for_msg_pf - checks to see if the VF has sent mail
+ *  @wx: pointer to the HW structure
+ *  @vf: the VF index
+ *
+ *  returns SUCCESS if the VF has set the Status bit or else ERR_MBX
+ **/
+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);
+}
+EXPORT_SYMBOL(wx_check_for_msg_pf);
+
+/**
+ *  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
+ *
+ *  returns SUCCESS if it successfully copied message into the buffer
+ **/
+int wx_write_mbx_pf(struct wx *wx, u32 *msg, u16 size, u16 vf)
+{
+	struct wx_mbx_info *mbx = &wx->mbx;
+	int ret, i;
+
+	if (size > mbx->size) {
+		wx_err(wx, "Invalid mailbox message size %d", size);
+		ret = -EINVAL;
+		goto out_no_write;
+	}
+
+	/* lock the mailbox to prevent pf/vf race condition */
+	ret = wx_obtain_mbx_lock_pf(wx, vf);
+	if (ret)
+		goto out_no_write;
+
+	/* 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);
+
+out_no_write:
+	return ret;
+}
+EXPORT_SYMBOL(wx_write_mbx_pf);
+
+/**
+ *  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
+ *
+ *  This function copies a message from the mailbox buffer to the caller's
+ *  memory buffer.  The presumption is that the caller knows that there was
+ *  a message due to a VF request so no polling for message is needed.
+ **/
+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 */
+	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)
+		goto out_no_read;
+
+	/* copy the message to the mailbox memory buffer */
+	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);
+out_no_read:
+	return ret;
+}
+EXPORT_SYMBOL(wx_read_mbx_pf);
+
+/**
+ *  wx_check_for_rst_pf - checks to see if the VF has reset
+ *  @wx: pointer to the HW structure
+ *  @vf: the VF index
+ *
+ *  returns SUCCESS if the VF has set the Status bit or else ERR_MBX
+ **/
+int wx_check_for_rst_pf(struct wx *wx, u16 vf)
+{
+	u32 reg_offset = vf / 32;
+	u32 vf_shift = vf % 32;
+	int ret = -EBUSY;
+	u32 vflre = 0;
+
+	vflre = rd32(wx, WX_VFLRE(reg_offset));
+
+	if (vflre & BIT(vf_shift)) {
+		ret = 0;
+		wr32(wx, WX_VFLREC(reg_offset), BIT(vf_shift));
+	}
+
+	return ret;
+}
+EXPORT_SYMBOL(wx_check_for_rst_pf);
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..1579096fb6ad
--- /dev/null
+++ b/drivers/net/ethernet/wangxun/libwx/wx_mbx.h
@@ -0,0 +1,32 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (c) 2015 - 2024 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 1fdeb464d5f4..f29ac955dc83 100644
--- a/drivers/net/ethernet/wangxun/libwx/wx_type.h
+++ b/drivers/net/ethernet/wangxun/libwx/wx_type.h
@@ -674,6 +674,10 @@ struct wx_bus_info {
 	u16 device;
 };
 
+struct wx_mbx_info {
+	u16 size;
+};
+
 struct wx_thermal_sensor_data {
 	s16 temp;
 	s16 alarm_thresh;
@@ -990,6 +994,7 @@ 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;
-- 
2.43.2

Re: [PATCH net-next v3 1/6] net: libwx: Add malibox api for wangxun pf drivers

[Simon Horman]

On Wed, May 15, 2024 at 05:50:04PM +0800, Mengyuan Lou wrote:
> Implements the mailbox interfaces for wangxun pf drivers
> ngbe and txgbe.
> 
> Signed-off-by: Mengyuan Lou <mengyuanlou@net-swift.com>

...

> 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..26842043630b
> --- /dev/null
> +++ b/drivers/net/ethernet/wangxun/libwx/wx_mbx.c
> @@ -0,0 +1,191 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/* Copyright (c) 2015 - 2024 Beijing WangXun Technology Co., Ltd. */
> +#include <linux/pci.h>
> +#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 SUCCESS if we obtained the mailbox lock
> + **/

Thanks for including a return section in Kernel docs.
It seems that the correct format is (case insensitive)
one of:

* return: ...
* returns: ...

So I think you need to add a ':'.

Likewise elsewhere in this patch-set.

Flagged by ./scripts/kernel-doc -none -Wall

...

[PATCH net-next v3 2/6] net: libwx: Add sriov api for wangxun nics

[Mengyuan Lou]

Implement sriov_configure interface for wangxun nics in libwx.

Signed-off-by: Mengyuan Lou <mengyuanlou@net-swift.com>
---
 drivers/net/ethernet/wangxun/libwx/Makefile   |   2 +-
 drivers/net/ethernet/wangxun/libwx/wx_mbx.h   |   4 +
 drivers/net/ethernet/wangxun/libwx/wx_sriov.c | 221 ++++++++++++++++++
 drivers/net/ethernet/wangxun/libwx/wx_sriov.h |  10 +
 drivers/net/ethernet/wangxun/libwx/wx_type.h  |  38 +++
 5 files changed, 274 insertions(+), 1 deletion(-)
 create mode 100644 drivers/net/ethernet/wangxun/libwx/wx_sriov.c
 create mode 100644 drivers/net/ethernet/wangxun/libwx/wx_sriov.h

diff --git a/drivers/net/ethernet/wangxun/libwx/Makefile b/drivers/net/ethernet/wangxun/libwx/Makefile
index 913a978c9032..5b996d973d29 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_mbx.o
+libwx-objs := wx_hw.o wx_lib.o wx_ethtool.o wx_mbx.o wx_sriov.o
diff --git a/drivers/net/ethernet/wangxun/libwx/wx_mbx.h b/drivers/net/ethernet/wangxun/libwx/wx_mbx.h
index 1579096fb6ad..3c70654a8b14 100644
--- a/drivers/net/ethernet/wangxun/libwx/wx_mbx.h
+++ b/drivers/net/ethernet/wangxun/libwx/wx_mbx.h
@@ -23,6 +23,10 @@
 
 #define WX_VT_MSGINFO_MASK    GENMASK(23, 16)
 
+enum wxvf_xcast_modes {
+	WXVF_XCAST_MODE_NONE = 0,
+};
+
 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);
diff --git a/drivers/net/ethernet/wangxun/libwx/wx_sriov.c b/drivers/net/ethernet/wangxun/libwx/wx_sriov.c
new file mode 100644
index 000000000000..032b75f23460
--- /dev/null
+++ b/drivers/net/ethernet/wangxun/libwx/wx_sriov.c
@@ -0,0 +1,221 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2015 - 2023 Beijing WangXun Technology Co., Ltd. */
+
+#include <linux/etherdevice.h>
+#include <linux/pci.h>
+
+#include "wx_type.h"
+#include "wx_mbx.h"
+#include "wx_sriov.h"
+
+static void wx_vf_configuration(struct pci_dev *pdev, int event_mask)
+{
+	unsigned int vfn = (event_mask & GENMASK(5, 0));
+	struct wx *wx = pci_get_drvdata(pdev);
+
+	bool enable = ((event_mask & BIT(31)) != 0);
+
+	if (enable)
+		eth_zero_addr(wx->vfinfo[vfn].vf_mac_addr);
+}
+
+static void wx_alloc_vf_macvlans(struct wx *wx, u8 num_vfs)
+{
+	struct vf_macvlans *mv_list;
+	int num_vf_macvlans, i;
+
+	/* Initialize list of VF macvlans */
+	INIT_LIST_HEAD(&wx->vf_mvs.l);
+
+	num_vf_macvlans = wx->mac.num_rar_entries -
+			  (WX_MAX_PF_MACVLANS + 1 + num_vfs);
+	if (!num_vf_macvlans)
+		return;
+
+	mv_list = kcalloc(num_vf_macvlans, sizeof(struct vf_macvlans),
+			  GFP_KERNEL);
+	if (mv_list) {
+		for (i = 0; i < num_vf_macvlans; i++) {
+			mv_list[i].vf = -1;
+			mv_list[i].free = true;
+			list_add(&mv_list[i].l, &wx->vf_mvs.l);
+		}
+		wx->mv_list = mv_list;
+	}
+}
+
+static int __wx_enable_sriov(struct wx *wx, u8 num_vfs)
+{
+	u32 value = 0;
+	int i;
+
+	set_bit(WX_FLAG_SRIOV_ENABLED, wx->flags);
+	wx_err(wx, "SR-IOV enabled with %d VFs\n", num_vfs);
+
+	/* Enable VMDq flag so device will be set in VM mode */
+	set_bit(WX_FLAG_VMDQ_ENABLED, wx->flags);
+	if (!wx->ring_feature[RING_F_VMDQ].limit)
+		wx->ring_feature[RING_F_VMDQ].limit = 1;
+	wx->ring_feature[RING_F_VMDQ].offset = num_vfs;
+
+	wx_alloc_vf_macvlans(wx, num_vfs);
+	/* Initialize default switching mode VEB */
+	wr32m(wx, WX_PSR_CTL, WX_PSR_CTL_SW_EN, WX_PSR_CTL_SW_EN);
+
+	/* If call to enable VFs succeeded then allocate memory
+	 * for per VF control structures.
+	 */
+	wx->vfinfo = kcalloc(num_vfs, sizeof(struct vf_data_storage), GFP_KERNEL);
+	if (!wx->vfinfo)
+		return -ENOMEM;
+
+	/* enable spoof checking for all VFs */
+	for (i = 0; i < num_vfs; i++) {
+		/* enable spoof checking for all VFs */
+		wx->vfinfo[i].spoofchk_enabled = true;
+		wx->vfinfo[i].link_enable = true;
+		/* Untrust all VFs */
+		wx->vfinfo[i].trusted = false;
+		/* set the default xcast mode */
+		wx->vfinfo[i].xcast_mode = WXVF_XCAST_MODE_NONE;
+	}
+
+	if (wx->mac.type == wx_mac_sp) {
+		if (num_vfs < 32)
+			value = WX_CFG_PORT_CTL_NUM_VT_32;
+		else
+			value = WX_CFG_PORT_CTL_NUM_VT_64;
+	} else {
+		value = WX_CFG_PORT_CTL_NUM_VT_8;
+	}
+	wr32m(wx, WX_CFG_PORT_CTL,
+	      WX_CFG_PORT_CTL_NUM_VT_MASK,
+	      value);
+
+	return 0;
+}
+
+static void wx_sriov_reinit(struct wx *wx)
+{
+	rtnl_lock();
+	wx->setup_tc(wx->netdev, netdev_get_num_tc(wx->netdev));
+	rtnl_unlock();
+}
+
+int wx_disable_sriov(struct wx *wx)
+{
+	/* If our VFs are assigned we cannot shut down SR-IOV
+	 * without causing issues, so just leave the hardware
+	 * available but disabled
+	 */
+	if (pci_vfs_assigned(wx->pdev)) {
+		wx_err(wx, "Unloading driver while VFs are assigned.\n");
+		return -EPERM;
+	}
+	/* disable iov and allow time for transactions to clear */
+	pci_disable_sriov(wx->pdev);
+
+	/* set num VFs to 0 to prevent access to vfinfo */
+	wx->num_vfs = 0;
+
+	/* free VF control structures */
+	kfree(wx->vfinfo);
+	wx->vfinfo = NULL;
+
+	/* free macvlan list */
+	kfree(wx->mv_list);
+	wx->mv_list = NULL;
+
+	/* set default pool back to 0 */
+	wr32m(wx, WX_PSR_VM_CTL, WX_PSR_VM_CTL_POOL_MASK, 0);
+	wx->ring_feature[RING_F_VMDQ].offset = 0;
+
+	clear_bit(WX_FLAG_SRIOV_ENABLED, wx->flags);
+	/* Disable VMDq flag so device will be set in VM mode */
+	if (wx->ring_feature[RING_F_VMDQ].limit == 1)
+		clear_bit(WX_FLAG_VMDQ_ENABLED, wx->flags);
+
+	return 0;
+}
+EXPORT_SYMBOL(wx_disable_sriov);
+
+static int wx_pci_sriov_enable(struct pci_dev *dev,
+			       int num_vfs)
+{
+	struct wx *wx = pci_get_drvdata(dev);
+	int err = 0, i;
+
+	err = __wx_enable_sriov(wx, num_vfs);
+	if (err)
+		goto err_out;
+
+	wx->num_vfs = num_vfs;
+	for (i = 0; i < wx->num_vfs; i++)
+		wx_vf_configuration(dev, (i | BIT(31)));
+
+	/* reset before enabling SRIOV to avoid mailbox issues */
+	wx_sriov_reinit(wx);
+
+	err = pci_enable_sriov(dev, num_vfs);
+	if (err) {
+		wx_err(wx, "Failed to enable PCI sriov: %d\n", err);
+		goto err_out;
+	}
+
+	return num_vfs;
+err_out:
+	return err;
+}
+
+static int wx_pci_sriov_disable(struct pci_dev *dev)
+{
+	struct wx *wx = pci_get_drvdata(dev);
+	int err;
+
+	err = wx_disable_sriov(wx);
+
+	/* reset before enabling SRIOV to avoid mailbox issues */
+	if (!err)
+		wx_sriov_reinit(wx);
+
+	return err;
+}
+
+static int wx_check_sriov_allowed(struct wx *wx, int num_vfs)
+{
+	u16 max_vfs;
+
+	max_vfs = (wx->mac.type == wx_mac_sp) ? 63 : 7;
+
+	if (num_vfs > max_vfs)
+		return -EPERM;
+
+	return 0;
+}
+
+int wx_pci_sriov_configure(struct pci_dev *pdev, int num_vfs)
+{
+	struct wx *wx = pci_get_drvdata(pdev);
+	int err;
+
+	err = wx_check_sriov_allowed(wx, num_vfs);
+	if (err)
+		return err;
+
+	if (!num_vfs) {
+		if (!pci_vfs_assigned(pdev)) {
+			wx_pci_sriov_disable(pdev);
+			return 0;
+		}
+
+		wx_err(wx, "can't free VFs because some are assigned to VMs.\n");
+		return -EBUSY;
+	}
+
+	err = wx_pci_sriov_enable(pdev, num_vfs);
+	if (err)
+		return err;
+
+	return num_vfs;
+}
+EXPORT_SYMBOL(wx_pci_sriov_configure);
diff --git a/drivers/net/ethernet/wangxun/libwx/wx_sriov.h b/drivers/net/ethernet/wangxun/libwx/wx_sriov.h
new file mode 100644
index 000000000000..17b547ae8862
--- /dev/null
+++ b/drivers/net/ethernet/wangxun/libwx/wx_sriov.h
@@ -0,0 +1,10 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (c) 2015 - 2024 Beijing WangXun Technology Co., Ltd. */
+
+#ifndef _WX_SRIOV_H_
+#define _WX_SRIOV_H_
+
+int wx_disable_sriov(struct wx *wx);
+int wx_pci_sriov_configure(struct pci_dev *pdev, int num_vfs);
+
+#endif /* _WX_SRIOV_H_ */
diff --git a/drivers/net/ethernet/wangxun/libwx/wx_type.h b/drivers/net/ethernet/wangxun/libwx/wx_type.h
index f29ac955dc83..c1bf8653b900 100644
--- a/drivers/net/ethernet/wangxun/libwx/wx_type.h
+++ b/drivers/net/ethernet/wangxun/libwx/wx_type.h
@@ -18,6 +18,7 @@
 /* MSI-X capability fields masks */
 #define WX_PCIE_MSIX_TBL_SZ_MASK                0x7FF
 #define WX_PCI_LINK_STATUS                      0xB2
+#define WX_MAX_PF_MACVLANS                      15
 
 /**************** Global Registers ****************************/
 /* chip control Registers */
@@ -88,6 +89,9 @@
 #define WX_CFG_TAG_TPID(_i)          (0x14430 + ((_i) * 4))
 #define WX_CFG_PORT_CTL_NUM_VT_MASK  GENMASK(13, 12) /* number of TVs */
 
+#define WX_CFG_PORT_CTL_NUM_VT_8     FIELD_PREP(GENMASK(13, 12), 1)
+#define WX_CFG_PORT_CTL_NUM_VT_32    FIELD_PREP(GENMASK(13, 12), 2)
+#define WX_CFG_PORT_CTL_NUM_VT_64    FIELD_PREP(GENMASK(13, 12), 3)
 
 /* GPIO Registers */
 #define WX_GPIO_DR                   0x14800
@@ -161,6 +165,7 @@
 /******************************* PSR Registers *******************************/
 /* psr control */
 #define WX_PSR_CTL                   0x15000
+#define WX_PSR_VM_CTL                0x151B0
 /* Header split receive */
 #define WX_PSR_CTL_SW_EN             BIT(18)
 #define WX_PSR_CTL_RSC_ACK           BIT(17)
@@ -181,6 +186,7 @@
 /* mcasst/ucast overflow tbl */
 #define WX_PSR_MC_TBL(_i)            (0x15200  + ((_i) * 4))
 #define WX_PSR_UC_TBL(_i)            (0x15400 + ((_i) * 4))
+#define WX_PSR_VM_CTL_POOL_MASK      GENMASK(12, 7)
 
 /* VM L2 contorl */
 #define WX_PSR_VM_L2CTL(_i)          (0x15600 + ((_i) * 4))
@@ -943,6 +949,7 @@ struct wx_ring_feature {
 enum wx_ring_f_enum {
 	RING_F_NONE = 0,
 	RING_F_RSS,
+	RING_F_VMDQ,
 	RING_F_ARRAY_SIZE  /* must be last in enum set */
 };
 
@@ -986,9 +993,33 @@ struct wx_hw_stats {
 	u64 qmprc;
 };
 
+struct vf_data_storage {
+	struct pci_dev *vfdev;
+	unsigned char vf_mac_addr[ETH_ALEN];
+	bool spoofchk_enabled;
+	bool link_enable;
+	bool trusted;
+	int xcast_mode;
+};
+
+struct vf_macvlans {
+	struct list_head l;
+	int vf;
+	bool free;
+	bool is_macvlan;
+	u8 vf_macvlan[ETH_ALEN];
+};
+
+enum wx_pf_flags {
+	WX_FLAG_VMDQ_ENABLED,
+	WX_FLAG_SRIOV_ENABLED,
+	WX_PF_FLAGS_NBITS		/* must be last */
+};
+
 struct wx {
 	unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
 
+	DECLARE_BITMAP(flags, WX_PF_FLAGS_NBITS);
 	void *priv;
 	u8 __iomem *hw_addr;
 	struct pci_dev *pdev;
@@ -1076,6 +1107,13 @@ struct wx {
 	u64 hw_csum_rx_good;
 	u64 hw_csum_rx_error;
 	u64 alloc_rx_buff_failed;
+
+	unsigned int num_vfs;
+	struct vf_data_storage *vfinfo;
+	struct vf_macvlans vf_mvs;
+	struct vf_macvlans *mv_list;
+
+	int (*setup_tc)(struct net_device *netdev, u8 tc);
 };
 
 #define WX_INTR_ALL (~0ULL)
-- 
2.43.2

[PATCH net-next v3 3/6] net: libwx: Redesign flow when sriov is enabled

[Mengyuan Lou]

Reallocate queue and int resources when sriov is enabled.
Redefine macro VMDQ to make it work in VT mode.

Signed-off-by: Mengyuan Lou <mengyuanlou@net-swift.com>
---
 drivers/net/ethernet/wangxun/libwx/wx_hw.c   | 300 ++++++++++++++++++-
 drivers/net/ethernet/wangxun/libwx/wx_lib.c  | 146 ++++++++-
 drivers/net/ethernet/wangxun/libwx/wx_type.h |  38 ++-
 3 files changed, 466 insertions(+), 18 deletions(-)

diff --git a/drivers/net/ethernet/wangxun/libwx/wx_hw.c b/drivers/net/ethernet/wangxun/libwx/wx_hw.c
index 3662483bfe2e..c23d1bc8a9b7 100644
--- a/drivers/net/ethernet/wangxun/libwx/wx_hw.c
+++ b/drivers/net/ethernet/wangxun/libwx/wx_hw.c
@@ -10,6 +10,7 @@
 
 #include "wx_type.h"
 #include "wx_lib.h"
+#include "wx_sriov.h"
 #include "wx_hw.h"
 
 static int wx_phy_read_reg_mdi(struct mii_bus *bus, int phy_addr, int devnum, int regnum)
@@ -804,11 +805,28 @@ static void wx_sync_mac_table(struct wx *wx)
 	}
 }
 
+static void wx_full_sync_mac_table(struct wx *wx)
+{
+	int i;
+
+	for (i = 0; i < wx->mac.num_rar_entries; i++) {
+		if (wx->mac_table[i].state & WX_MAC_STATE_IN_USE) {
+			wx_set_rar(wx, i,
+				   wx->mac_table[i].addr,
+				   wx->mac_table[i].pools,
+				   WX_PSR_MAC_SWC_AD_H_AV);
+		} else {
+			wx_clear_rar(wx, i);
+		}
+		wx->mac_table[i].state &= ~(WX_MAC_STATE_MODIFIED);
+	}
+}
+
 /* this function destroys the first RAR entry */
 void wx_mac_set_default_filter(struct wx *wx, u8 *addr)
 {
 	memcpy(&wx->mac_table[0].addr, addr, ETH_ALEN);
-	wx->mac_table[0].pools = 1ULL;
+	wx->mac_table[0].pools = BIT(VMDQ_P(0));
 	wx->mac_table[0].state = (WX_MAC_STATE_DEFAULT | WX_MAC_STATE_IN_USE);
 	wx_set_rar(wx, 0, wx->mac_table[0].addr,
 		   wx->mac_table[0].pools,
@@ -1046,6 +1064,35 @@ static void wx_update_mc_addr_list(struct wx *wx, struct net_device *netdev)
 	wx_dbg(wx, "Update mc addr list Complete\n");
 }
 
+static void wx_restore_vf_multicasts(struct wx *wx)
+{
+	u32 i, j, vector_bit, vector_reg;
+	struct vf_data_storage *vfinfo;
+
+	for (i = 0; i < wx->num_vfs; i++) {
+		u32 vmolr = rd32(wx, WX_PSR_VM_L2CTL(i));
+
+		vfinfo = &wx->vfinfo[i];
+		for (j = 0; j < vfinfo->num_vf_mc_hashes; j++) {
+			wx->addr_ctrl.mta_in_use++;
+			vector_reg = (vfinfo->vf_mc_hashes[j] >> 5) & GENMASK(6, 0);
+			vector_bit = vfinfo->vf_mc_hashes[j] & GENMASK(4, 0);
+			wr32m(wx, WX_PSR_MC_TBL(vector_reg),
+			      BIT(vector_bit), BIT(vector_bit));
+			/* errata 5: maintain a copy of the reg table conf */
+			wx->mac.mta_shadow[vector_reg] |= BIT(vector_bit);
+		}
+		if (vfinfo->num_vf_mc_hashes)
+			vmolr |= WX_PSR_VM_L2CTL_ROMPE;
+		else
+			vmolr &= ~WX_PSR_VM_L2CTL_ROMPE;
+		wr32(wx, WX_PSR_VM_L2CTL(i), vmolr);
+	}
+
+	/* Restore any VF macvlans */
+	wx_full_sync_mac_table(wx);
+}
+
 /**
  * wx_write_mc_addr_list - write multicast addresses to MTA
  * @netdev: network interface device structure
@@ -1063,6 +1110,9 @@ static int wx_write_mc_addr_list(struct net_device *netdev)
 
 	wx_update_mc_addr_list(wx, netdev);
 
+	if (test_bit(WX_FLAG_SRIOV_ENABLED, wx->flags))
+		wx_restore_vf_multicasts(wx);
+
 	return netdev_mc_count(netdev);
 }
 
@@ -1083,7 +1133,7 @@ int wx_set_mac(struct net_device *netdev, void *p)
 	if (retval)
 		return retval;
 
-	wx_del_mac_filter(wx, wx->mac.addr, 0);
+	wx_del_mac_filter(wx, wx->mac.addr, VMDQ_P(0));
 	eth_hw_addr_set(netdev, addr->sa_data);
 	memcpy(wx->mac.addr, addr->sa_data, netdev->addr_len);
 
@@ -1178,6 +1228,10 @@ static int wx_hpbthresh(struct wx *wx)
 	/* Calculate delay value for device */
 	dv_id = WX_DV(link, tc);
 
+	/* Loopback switch introduces additional latency */
+	if (test_bit(WX_FLAG_SRIOV_ENABLED, wx->flags))
+		dv_id += WX_B2BT(tc);
+
 	/* Delay value is calculated in bit times convert to KB */
 	kb = WX_BT2KB(dv_id);
 	rx_pba = rd32(wx, WX_RDB_PB_SZ(0)) >> WX_RDB_PB_SZ_SHIFT;
@@ -1233,12 +1287,113 @@ static void wx_pbthresh_setup(struct wx *wx)
 		wx->fc.low_water = 0;
 }
 
+/**
+ *  wx_set_ethertype_anti_spoofing - Enable/Disable Ethertype anti-spoofing
+ *  @wx: pointer to hardware structure
+ *  @enable: enable or disable switch for Ethertype anti-spoofing
+ *  @vf: Virtual Function pool - VF Pool to set for Ethertype anti-spoofing
+ *
+ **/
+static void wx_set_ethertype_anti_spoofing(struct wx *wx, bool enable, int vf)
+{
+	u32 pfvfspoof, reg_offset, vf_shift;
+
+	vf_shift = vf % 32;
+	reg_offset = vf / 32;
+
+	pfvfspoof = rd32(wx, WX_TDM_ETYPE_AS(reg_offset));
+	if (enable)
+		pfvfspoof |= BIT(vf_shift);
+	else
+		pfvfspoof &= ~BIT(vf_shift);
+	wr32(wx, WX_TDM_ETYPE_AS(reg_offset), pfvfspoof);
+}
+
+static int wx_set_vf_spoofchk(struct net_device *netdev, int vf, bool setting)
+{
+	u32 index = vf / 32, vf_bit = vf % 32;
+	struct wx *wx = netdev_priv(netdev);
+	u32 regval;
+
+	if (vf >= wx->num_vfs)
+		return -EINVAL;
+
+	wx->vfinfo[vf].spoofchk_enabled = setting;
+
+	regval = (setting << vf_bit);
+	wr32m(wx, WX_TDM_MAC_AS(index), regval | BIT(vf_bit), regval);
+
+	if (wx->vfinfo[vf].vlan_count)
+		wr32m(wx, WX_TDM_VLAN_AS(index), regval | BIT(vf_bit), regval);
+
+	return 0;
+}
+
+static void wx_configure_virtualization(struct wx *wx)
+{
+	u16 pool = wx->num_rx_pools;
+	u32 reg_offset, vf_shift;
+	u32 i;
+
+	if (!test_bit(WX_FLAG_SRIOV_ENABLED, wx->flags))
+		return;
+
+	wr32m(wx, WX_PSR_VM_CTL,
+	      WX_PSR_VM_CTL_POOL_MASK | WX_PSR_VM_CTL_REPLEN,
+	      FIELD_PREP(WX_PSR_VM_CTL_POOL_MASK, VMDQ_P(0)) |
+	      WX_PSR_VM_CTL_REPLEN);
+	while (pool--)
+		wr32m(wx, WX_PSR_VM_L2CTL(pool), WX_PSR_VM_L2CTL_AUPE, WX_PSR_VM_L2CTL_AUPE);
+
+	if (wx->mac.type == wx_mac_sp) {
+		vf_shift = VMDQ_P(0) % 32;
+		reg_offset = VMDQ_P(0) / 32;
+
+		/* Enable only the PF pools for Tx/Rx */
+		wr32(wx, WX_RDM_VF_RE(reg_offset), GENMASK(31, vf_shift));
+		wr32(wx, WX_RDM_VF_RE(reg_offset ^ 1), reg_offset - 1);
+		wr32(wx, WX_TDM_VF_TE(reg_offset), GENMASK(31, vf_shift));
+		wr32(wx, WX_TDM_VF_TE(reg_offset ^ 1), reg_offset - 1);
+	} else {
+		vf_shift = BIT(VMDQ_P(0));
+		/* Enable only the PF pools for Tx/Rx */
+		wr32(wx, WX_RDM_VF_RE(0), vf_shift);
+		wr32(wx, WX_TDM_VF_TE(0), vf_shift);
+	}
+
+	/* clear VLAN promisc flag so VFTA will be updated if necessary */
+	clear_bit(WX_FLAG2_VLAN_PROMISC, wx->flags);
+
+	for (i = 0; i < wx->num_vfs; i++) {
+		if (!wx->vfinfo[i].spoofchk_enabled)
+			wx_set_vf_spoofchk(wx->netdev, i, false);
+		/* enable ethertype anti spoofing if hw supports it */
+		wx_set_ethertype_anti_spoofing(wx, true, i);
+	}
+}
+
 static void wx_configure_port(struct wx *wx)
 {
 	u32 value, i;
 
-	value = WX_CFG_PORT_CTL_D_VLAN | WX_CFG_PORT_CTL_QINQ;
+	if (wx->mac.type == wx_mac_em) {
+		value = (wx->num_vfs == 0) ?
+			WX_CFG_PORT_CTL_NUM_VT_NONE :
+			WX_CFG_PORT_CTL_NUM_VT_8;
+	} else {
+		if (test_bit(WX_FLAG_VMDQ_ENABLED, wx->flags)) {
+			if (wx->ring_feature[RING_F_RSS].indices == 4)
+				value = WX_CFG_PORT_CTL_NUM_VT_32;
+			else
+				value = WX_CFG_PORT_CTL_NUM_VT_64;
+		} else {
+			value = 0;
+		}
+	}
+
+	value |= WX_CFG_PORT_CTL_D_VLAN | WX_CFG_PORT_CTL_QINQ;
 	wr32m(wx, WX_CFG_PORT_CTL,
+	      WX_CFG_PORT_CTL_NUM_VT_MASK |
 	      WX_CFG_PORT_CTL_D_VLAN |
 	      WX_CFG_PORT_CTL_QINQ,
 	      value);
@@ -1297,6 +1452,83 @@ static void wx_vlan_strip_control(struct wx *wx, bool enable)
 	}
 }
 
+static void wx_vlan_promisc_enable(struct wx *wx)
+{
+	u32 vlnctrl, i, vind, bits, reg_idx;
+
+	vlnctrl = rd32(wx, WX_PSR_VLAN_CTL);
+	if (test_bit(WX_FLAG_VMDQ_ENABLED, wx->flags)) {
+		/* we need to keep the VLAN filter on in SRIOV */
+		vlnctrl |= WX_PSR_VLAN_CTL_VFE;
+		wr32(wx, WX_PSR_VLAN_CTL, vlnctrl);
+	} else {
+		vlnctrl &= ~WX_PSR_VLAN_CTL_VFE;
+		wr32(wx, WX_PSR_VLAN_CTL, vlnctrl);
+		return;
+	}
+	/* We are already in VLAN promisc, nothing to do */
+	if (test_bit(WX_FLAG2_VLAN_PROMISC, wx->flags))
+		return;
+	/* Set flag so we don't redo unnecessary work */
+	set_bit(WX_FLAG2_VLAN_PROMISC, wx->flags);
+	/* Add PF to all active pools */
+	for (i = WX_PSR_VLAN_SWC_ENTRIES; --i;) {
+		wr32(wx, WX_PSR_VLAN_SWC_IDX, i);
+		reg_idx = VMDQ_P(0) / 32;
+		vind = VMDQ_P(0) % 32;
+		bits = rd32(wx, WX_PSR_VLAN_SWC_VM(reg_idx));
+		bits |= BIT(vind);
+		wr32(wx, WX_PSR_VLAN_SWC_VM(reg_idx), bits);
+	}
+	/* Set all bits in the VLAN filter table array */
+	for (i = 0; i < wx->mac.vft_size; i++)
+		wr32(wx, WX_PSR_VLAN_TBL(i), U32_MAX);
+}
+
+static void wx_scrub_vfta(struct wx *wx)
+{
+	u32 i, vid, bits, vfta, vind, vlvf, reg_idx;
+
+	for (i = WX_PSR_VLAN_SWC_ENTRIES; --i;) {
+		wr32(wx, WX_PSR_VLAN_SWC_IDX, i);
+		vlvf = rd32(wx, WX_PSR_VLAN_SWC_IDX);
+		/* pull VLAN ID from VLVF */
+		vid = vlvf & ~WX_PSR_VLAN_SWC_VIEN;
+		if (vlvf & WX_PSR_VLAN_SWC_VIEN) {
+			/* if PF is part of this then continue */
+			if (test_bit(vid, wx->active_vlans))
+				continue;
+		}
+		/* remove PF from the pool */
+		reg_idx = VMDQ_P(0) / 32;
+		vind = VMDQ_P(0) % 32;
+		bits = rd32(wx, WX_PSR_VLAN_SWC_VM(reg_idx));
+		bits &= ~BIT(vind);
+		wr32(wx, WX_PSR_VLAN_SWC_VM(reg_idx), bits);
+	}
+	/* extract values from vft_shadow and write back to VFTA */
+	for (i = 0; i < wx->mac.vft_size; i++) {
+		vfta = wx->mac.vft_shadow[i];
+		wr32(wx, WX_PSR_VLAN_TBL(i), vfta);
+	}
+}
+
+static void wx_vlan_promisc_disable(struct wx *wx)
+{
+	u32 vlnctrl;
+
+	/* configure vlan filtering */
+	vlnctrl = rd32(wx, WX_PSR_VLAN_CTL);
+	vlnctrl |= WX_PSR_VLAN_CTL_VFE;
+	wr32(wx, WX_PSR_VLAN_CTL, vlnctrl);
+	/* We are not in VLAN promisc, nothing to do */
+	if (!test_bit(WX_FLAG2_VLAN_PROMISC, wx->flags))
+		return;
+	/* Set flag so we don't redo unnecessary work */
+	clear_bit(WX_FLAG2_VLAN_PROMISC, wx->flags);
+	wx_scrub_vfta(wx);
+}
+
 void wx_set_rx_mode(struct net_device *netdev)
 {
 	struct wx *wx = netdev_priv(netdev);
@@ -1309,7 +1541,7 @@ void wx_set_rx_mode(struct net_device *netdev)
 	/* Check for Promiscuous and All Multicast modes */
 	fctrl = rd32(wx, WX_PSR_CTL);
 	fctrl &= ~(WX_PSR_CTL_UPE | WX_PSR_CTL_MPE);
-	vmolr = rd32(wx, WX_PSR_VM_L2CTL(0));
+	vmolr = rd32(wx, WX_PSR_VM_L2CTL(VMDQ_P(0)));
 	vmolr &= ~(WX_PSR_VM_L2CTL_UPE |
 		   WX_PSR_VM_L2CTL_MPE |
 		   WX_PSR_VM_L2CTL_ROPE |
@@ -1330,7 +1562,10 @@ void wx_set_rx_mode(struct net_device *netdev)
 		fctrl |= WX_PSR_CTL_UPE | WX_PSR_CTL_MPE;
 		/* pf don't want packets routing to vf, so clear UPE */
 		vmolr |= WX_PSR_VM_L2CTL_MPE;
-		vlnctrl &= ~WX_PSR_VLAN_CTL_VFE;
+		if (test_bit(WX_FLAG_VMDQ_ENABLED, wx->flags) &&
+		    test_bit(WX_FLAG_SRIOV_ENABLED, wx->flags))
+			vlnctrl |= WX_PSR_VLAN_CTL_VFE;
+		features &= ~NETIF_F_HW_VLAN_CTAG_FILTER;
 	}
 
 	if (netdev->flags & IFF_ALLMULTI) {
@@ -1353,7 +1588,7 @@ void wx_set_rx_mode(struct net_device *netdev)
 	 * sufficient space to store all the addresses then enable
 	 * unicast promiscuous mode
 	 */
-	count = wx_write_uc_addr_list(netdev, 0);
+	count = wx_write_uc_addr_list(netdev, VMDQ_P(0));
 	if (count < 0) {
 		vmolr &= ~WX_PSR_VM_L2CTL_ROPE;
 		vmolr |= WX_PSR_VM_L2CTL_UPE;
@@ -1371,7 +1606,7 @@ void wx_set_rx_mode(struct net_device *netdev)
 
 	wr32(wx, WX_PSR_VLAN_CTL, vlnctrl);
 	wr32(wx, WX_PSR_CTL, fctrl);
-	wr32(wx, WX_PSR_VM_L2CTL(0), vmolr);
+	wr32(wx, WX_PSR_VM_L2CTL(VMDQ_P(0)), vmolr);
 
 	if ((features & NETIF_F_HW_VLAN_CTAG_RX) &&
 	    (features & NETIF_F_HW_VLAN_STAG_RX))
@@ -1379,6 +1614,10 @@ void wx_set_rx_mode(struct net_device *netdev)
 	else
 		wx_vlan_strip_control(wx, false);
 
+	if (features & NETIF_F_HW_VLAN_CTAG_FILTER)
+		wx_vlan_promisc_disable(wx);
+	else
+		wx_vlan_promisc_enable(wx);
 }
 EXPORT_SYMBOL(wx_set_rx_mode);
 
@@ -1621,6 +1860,13 @@ static void wx_setup_reta(struct wx *wx)
 	u32 random_key_size = WX_RSS_KEY_SIZE / 4;
 	u32 i, j;
 
+	if (test_bit(WX_FLAG_SRIOV_ENABLED, wx->flags)) {
+		if (wx->mac.type == wx_mac_sp)
+			rss_i = rss_i < 4 ? 4 : rss_i;
+		else if (wx->mac.type == wx_mac_em)
+			rss_i = 1;
+	}
+
 	/* Fill out hash function seeds */
 	for (i = 0; i < random_key_size; i++)
 		wr32(wx, WX_RDB_RSSRK(i), wx->rss_key[i]);
@@ -1638,10 +1884,40 @@ static void wx_setup_reta(struct wx *wx)
 	wx_store_reta(wx);
 }
 
+static void wx_setup_psrtype(struct wx *wx)
+{
+	int rss_i = wx->ring_feature[RING_F_RSS].indices;
+	u32 psrtype;
+	int pool;
+
+	psrtype = WX_RDB_PL_CFG_L4HDR |
+		  WX_RDB_PL_CFG_L3HDR |
+		  WX_RDB_PL_CFG_L2HDR |
+		  WX_RDB_PL_CFG_TUN_OUTL2HDR |
+		  WX_RDB_PL_CFG_TUN_TUNHDR;
+
+	if (wx->mac.type == wx_mac_sp) {
+		if (rss_i > 3)
+			psrtype |= FIELD_PREP(GENMASK(31, 29), 2);
+		else if (rss_i > 1)
+			psrtype |= FIELD_PREP(GENMASK(31, 29), 1);
+
+		for_each_set_bit(pool, &wx->fwd_bitmask, 32)
+			wr32(wx, WX_RDB_PL_CFG(VMDQ_P(pool)), psrtype);
+	} else {
+		for_each_set_bit(pool, &wx->fwd_bitmask, 8)
+			wr32(wx, WX_RDB_PL_CFG(VMDQ_P(pool)), psrtype);
+	}
+}
+
 static void wx_setup_mrqc(struct wx *wx)
 {
 	u32 rss_field = 0;
 
+	/* VT, and RSS do not coexist at the same time */
+	if (test_bit(WX_FLAG_VMDQ_ENABLED, wx->flags))
+		return;
+
 	/* Disable indicating checksum in descriptor, enables RSS hash */
 	wr32m(wx, WX_PSR_CTL, WX_PSR_CTL_PCSD, WX_PSR_CTL_PCSD);
 
@@ -1671,16 +1947,11 @@ static void wx_setup_mrqc(struct wx *wx)
  **/
 void wx_configure_rx(struct wx *wx)
 {
-	u32 psrtype, i;
 	int ret;
+	u32 i;
 
 	wx_disable_rx(wx);
-
-	psrtype = WX_RDB_PL_CFG_L4HDR |
-		  WX_RDB_PL_CFG_L3HDR |
-		  WX_RDB_PL_CFG_L2HDR |
-		  WX_RDB_PL_CFG_TUN_TUNHDR;
-	wr32(wx, WX_RDB_PL_CFG(0), psrtype);
+	wx_setup_psrtype(wx);
 
 	/* enable hw crc stripping */
 	wr32m(wx, WX_RSC_CTL, WX_RSC_CTL_CRC_STRIP, WX_RSC_CTL_CRC_STRIP);
@@ -1728,6 +1999,7 @@ void wx_configure(struct wx *wx)
 {
 	wx_set_rxpba(wx);
 	wx_pbthresh_setup(wx);
+	wx_configure_virtualization(wx);
 	wx_configure_port(wx);
 
 	wx_set_rx_mode(wx->netdev);
diff --git a/drivers/net/ethernet/wangxun/libwx/wx_lib.c b/drivers/net/ethernet/wangxun/libwx/wx_lib.c
index 6fae161cbcb8..978117cb8f3e 100644
--- a/drivers/net/ethernet/wangxun/libwx/wx_lib.c
+++ b/drivers/net/ethernet/wangxun/libwx/wx_lib.c
@@ -1558,6 +1558,73 @@ void wx_napi_disable_all(struct wx *wx)
 }
 EXPORT_SYMBOL(wx_napi_disable_all);
 
+/**
+ * wx_set_vmdq_queues: Allocate queues for VMDq devices
+ * @wx: board private structure to initialize
+ *
+ * When VMDq (Virtual Machine Devices queue) is enabled, allocate queues
+ * and VM pools where appropriate.  If RSS is available, then also try and
+ * enable RSS and map accordingly.
+ **/
+static bool wx_set_vmdq_queues(struct wx *wx)
+{
+	u16 vmdq_i = wx->ring_feature[RING_F_VMDQ].limit;
+	u16 rss_i = wx->ring_feature[RING_F_RSS].limit;
+	u16 rss_m = WX_RSS_DISABLED_MASK;
+	u16 vmdq_m = 0;
+
+	/* only proceed if VMDq is enabled */
+	if (!test_bit(WX_FLAG_VMDQ_ENABLED, wx->flags))
+		return false;
+	/* Add starting offset to total pool count */
+	vmdq_i += wx->ring_feature[RING_F_VMDQ].offset;
+
+	if (wx->mac.type == wx_mac_sp) {
+		/* double check we are limited to maximum pools */
+		vmdq_i = min_t(u16, 64, vmdq_i);
+
+		/* 64 pool mode with 2 queues per pool, or
+		 * 16/32/64 pool mode with 1 queue per pool
+		 */
+		if (vmdq_i > 32 || rss_i < 4) {
+			vmdq_m = WX_VMDQ_2Q_MASK;
+			rss_m = WX_RSS_2Q_MASK;
+			rss_i = min_t(u16, rss_i, 2);
+		/* 32 pool mode with 4 queues per pool */
+		} else {
+			vmdq_m = WX_VMDQ_4Q_MASK;
+			rss_m = WX_RSS_4Q_MASK;
+			rss_i = 4;
+		}
+	} else {
+		/* double check we are limited to maximum pools */
+		vmdq_i = min_t(u16, 8, vmdq_i);
+
+		/* when VMDQ on, disable RSS */
+		rss_i = 1;
+	}
+
+	/* remove the starting offset from the pool count */
+	vmdq_i -= wx->ring_feature[RING_F_VMDQ].offset;
+
+	/* save features for later use */
+	wx->ring_feature[RING_F_VMDQ].indices = vmdq_i;
+	wx->ring_feature[RING_F_VMDQ].mask = vmdq_m;
+
+	/* limit RSS based on user input and save for later use */
+	wx->ring_feature[RING_F_RSS].indices = rss_i;
+	wx->ring_feature[RING_F_RSS].mask = rss_m;
+
+	wx->queues_per_pool = rss_i;/*maybe same to num_rx_queues_per_pool*/
+	wx->num_rx_pools = vmdq_i;
+	wx->num_rx_queues_per_pool = rss_i;
+
+	wx->num_rx_queues = vmdq_i * rss_i;
+	wx->num_tx_queues = vmdq_i * rss_i;
+
+	return true;
+}
+
 /**
  * wx_set_rss_queues: Allocate queues for RSS
  * @wx: board private structure to initialize
@@ -1574,6 +1641,11 @@ static void wx_set_rss_queues(struct wx *wx)
 	f = &wx->ring_feature[RING_F_RSS];
 	f->indices = f->limit;
 
+	if (wx->mac.type == wx_mac_sp)
+		f->mask = WX_RSS_64Q_MASK;
+	else
+		f->mask = WX_RSS_8Q_MASK;
+
 	wx->num_rx_queues = f->limit;
 	wx->num_tx_queues = f->limit;
 }
@@ -1585,6 +1657,9 @@ static void wx_set_num_queues(struct wx *wx)
 	wx->num_tx_queues = 1;
 	wx->queues_per_pool = 1;
 
+	if (wx_set_vmdq_queues(wx))
+		return;
+
 	wx_set_rss_queues(wx);
 }
 
@@ -1665,6 +1740,10 @@ static int wx_set_interrupt_capability(struct wx *wx)
 	if (ret == 0 || (ret == -ENOMEM))
 		return ret;
 
+	/* Disable VMDq support */
+	dev_warn(&wx->pdev->dev, "Disabling VMQQ support\n");
+	clear_bit(WX_FLAG_VMDQ_ENABLED, wx->flags);
+
 	/* Disable RSS */
 	dev_warn(&wx->pdev->dev, "Disabling RSS support\n");
 	wx->ring_feature[RING_F_RSS].limit = 1;
@@ -1690,6 +1769,58 @@ static int wx_set_interrupt_capability(struct wx *wx)
 	return 0;
 }
 
+/**
+ * wx_cache_ring_vmdq - Descriptor ring to register mapping for VMDq
+ * @wx: board private structure to initialize
+ *
+ * Cache the descriptor ring offsets for VMDq to the assigned rings.  It
+ * will also try to cache the proper offsets if RSS/FCoE/SRIOV are enabled along
+ * with VMDq.
+ *
+ **/
+static bool wx_cache_ring_vmdq(struct wx *wx)
+{
+	struct wx_ring_feature *vmdq = &wx->ring_feature[RING_F_VMDQ];
+	struct wx_ring_feature *rss = &wx->ring_feature[RING_F_RSS];
+	u16 reg_idx;
+	int i;
+
+	/* only proceed if VMDq is enabled */
+	if (!test_bit(WX_FLAG_VMDQ_ENABLED, wx->flags))
+		return false;
+
+	if (wx->mac.type == wx_mac_sp) {
+		/* start at VMDq register offset for SR-IOV enabled setups */
+		reg_idx = vmdq->offset * __ALIGN_MASK(1, ~vmdq->mask);
+		for (i = 0; i < wx->num_rx_queues; i++, reg_idx++) {
+			/* If we are greater than indices move to next pool */
+			if ((reg_idx & ~vmdq->mask) >= rss->indices)
+				reg_idx = __ALIGN_MASK(reg_idx, ~vmdq->mask);
+			wx->rx_ring[i]->reg_idx = reg_idx;
+		}
+		reg_idx = vmdq->offset * __ALIGN_MASK(1, ~vmdq->mask);
+		for (i = 0; i < wx->num_tx_queues; i++, reg_idx++) {
+			/* If we are greater than indices move to next pool */
+			if ((reg_idx & rss->mask) >= rss->indices)
+				reg_idx = __ALIGN_MASK(reg_idx, ~vmdq->mask);
+			wx->tx_ring[i]->reg_idx = reg_idx;
+		}
+	} else {
+		/* start at VMDq register offset for SR-IOV enabled setups */
+		reg_idx = vmdq->offset;
+		for (i = 0; i < wx->num_rx_queues; i++)
+			/* If we are greater than indices move to next pool */
+			wx->rx_ring[i]->reg_idx = reg_idx + i;
+
+		reg_idx = vmdq->offset;
+		for (i = 0; i < wx->num_tx_queues; i++)
+			/* If we are greater than indices move to next pool */
+			wx->tx_ring[i]->reg_idx = reg_idx + i;
+	}
+
+	return true;
+}
+
 /**
  * wx_cache_ring_rss - Descriptor ring to register mapping for RSS
  * @wx: board private structure to initialize
@@ -1701,6 +1832,9 @@ static void wx_cache_ring_rss(struct wx *wx)
 {
 	u16 i;
 
+	if (wx_cache_ring_vmdq(wx))
+		return;
+
 	for (i = 0; i < wx->num_rx_queues; i++)
 		wx->rx_ring[i]->reg_idx = i;
 
@@ -2089,7 +2223,8 @@ static void wx_set_ivar(struct wx *wx, s8 direction,
 		wr32(wx, WX_PX_MISC_IVAR, ivar);
 	} else {
 		/* tx or rx causes */
-		msix_vector += 1; /* offset for queue vectors */
+		if (!(wx->mac.type == wx_mac_em && wx->num_vfs == 7))
+			msix_vector += 1; /* offset for queue vectors */
 		msix_vector |= WX_PX_IVAR_ALLOC_VAL;
 		index = ((16 * (queue & 1)) + (8 * direction));
 		ivar = rd32(wx, WX_PX_IVAR(queue >> 1));
@@ -2134,10 +2269,17 @@ void wx_configure_vectors(struct wx *wx)
 {
 	struct pci_dev *pdev = wx->pdev;
 	u32 eitrsel = 0;
-	u16 v_idx;
+	u16 v_idx, i;
 
 	if (pdev->msix_enabled) {
 		/* Populate MSIX to EITR Select */
+		if (wx->mac.type == wx_mac_sp) {
+			if (wx->num_vfs >= 32)
+				eitrsel = BIT(wx->num_vfs % 32) - 1;
+		} else if (wx->mac.type == wx_mac_em) {
+			for (i = 0; i < wx->num_vfs; i++)
+				eitrsel |= BIT(i);
+		}
 		wr32(wx, WX_PX_ITRSEL, eitrsel);
 		/* use EIAM to auto-mask when MSI-X interrupt is asserted
 		 * this saves a register write for every interrupt
diff --git a/drivers/net/ethernet/wangxun/libwx/wx_type.h b/drivers/net/ethernet/wangxun/libwx/wx_type.h
index c1bf8653b900..7d39429a147b 100644
--- a/drivers/net/ethernet/wangxun/libwx/wx_type.h
+++ b/drivers/net/ethernet/wangxun/libwx/wx_type.h
@@ -19,6 +19,7 @@
 #define WX_PCIE_MSIX_TBL_SZ_MASK                0x7FF
 #define WX_PCI_LINK_STATUS                      0xB2
 #define WX_MAX_PF_MACVLANS                      15
+#define WX_MAX_VF_MC_ENTRIES                    30
 
 /**************** Global Registers ****************************/
 /* chip control Registers */
@@ -75,6 +76,7 @@
 #define WX_MAC_LXONOFFRXC            0x11E0C
 
 /*********************** Receive DMA registers **************************/
+#define WX_RDM_VF_RE(_i)             (0x12004 + ((_i) * 4))
 #define WX_RDM_DRP_PKT               0x12500
 #define WX_RDM_PKT_CNT               0x12504
 #define WX_RDM_BYTE_CNT_LSB          0x12508
@@ -89,6 +91,7 @@
 #define WX_CFG_TAG_TPID(_i)          (0x14430 + ((_i) * 4))
 #define WX_CFG_PORT_CTL_NUM_VT_MASK  GENMASK(13, 12) /* number of TVs */
 
+#define WX_CFG_PORT_CTL_NUM_VT_NONE  0
 #define WX_CFG_PORT_CTL_NUM_VT_8     FIELD_PREP(GENMASK(13, 12), 1)
 #define WX_CFG_PORT_CTL_NUM_VT_32    FIELD_PREP(GENMASK(13, 12), 2)
 #define WX_CFG_PORT_CTL_NUM_VT_64    FIELD_PREP(GENMASK(13, 12), 3)
@@ -114,6 +117,10 @@
 /*********************** Transmit DMA registers **************************/
 /* transmit global control */
 #define WX_TDM_CTL                   0x18000
+#define WX_TDM_VF_TE(_i)             (0x18004 + ((_i) * 4))
+#define WX_TDM_MAC_AS(_i)            (0x18060 + ((_i) * 4))
+#define WX_TDM_VLAN_AS(_i)           (0x18070 + ((_i) * 4))
+
 /* TDM CTL BIT */
 #define WX_TDM_CTL_TE                BIT(0) /* Transmit Enable */
 #define WX_TDM_PB_THRE(_i)           (0x18020 + ((_i) * 4))
@@ -186,6 +193,7 @@
 /* mcasst/ucast overflow tbl */
 #define WX_PSR_MC_TBL(_i)            (0x15200  + ((_i) * 4))
 #define WX_PSR_UC_TBL(_i)            (0x15400 + ((_i) * 4))
+#define WX_PSR_VM_CTL_REPLEN         BIT(30) /* replication enabled */
 #define WX_PSR_VM_CTL_POOL_MASK      GENMASK(12, 7)
 
 /* VM L2 contorl */
@@ -230,6 +238,7 @@
 #define WX_PSR_VLAN_SWC              0x16220
 #define WX_PSR_VLAN_SWC_VM_L         0x16224
 #define WX_PSR_VLAN_SWC_VM_H         0x16228
+#define WX_PSR_VLAN_SWC_VM(_i)       (0x16224 + ((_i) * 4))
 #define WX_PSR_VLAN_SWC_IDX          0x16230         /* 64 vlan entries */
 /* VLAN pool filtering masks */
 #define WX_PSR_VLAN_SWC_VIEN         BIT(31)  /* filter is valid */
@@ -244,6 +253,10 @@
 #define WX_RSC_ST                    0x17004
 #define WX_RSC_ST_RSEC_RDY           BIT(0)
 
+/*********************** Transmit DMA registers **************************/
+/* transmit global control */
+#define WX_TDM_ETYPE_AS(_i)          (0x18058 + ((_i) * 4))
+
 /****************************** TDB ******************************************/
 #define WX_TDB_PB_SZ(_i)             (0x1CC00 + ((_i) * 4))
 #define WX_TXPKT_SIZE_MAX            0xA /* Max Tx Packet size */
@@ -371,6 +384,15 @@ enum WX_MSCA_CMD_value {
 /* Number of 80 microseconds we wait for PCI Express master disable */
 #define WX_PCI_MASTER_DISABLE_TIMEOUT        80000
 
+#define WX_RSS_64Q_MASK              0x3F
+#define WX_RSS_8Q_MASK               0x7
+#define WX_RSS_4Q_MASK               0x3
+#define WX_RSS_2Q_MASK               0x1
+#define WX_RSS_DISABLED_MASK         0x0
+
+#define WX_VMDQ_4Q_MASK              0x7C
+#define WX_VMDQ_2Q_MASK              0x7E
+
 /****************** Manageablility Host Interface defines ********************/
 #define WX_HI_MAX_BLOCK_BYTE_LENGTH  256 /* Num of bytes in range */
 #define WX_HI_COMMAND_TIMEOUT        1000 /* Process HI command limit */
@@ -435,7 +457,12 @@ enum WX_MSCA_CMD_value {
 #define WX_REQ_TX_DESCRIPTOR_MULTIPLE   8
 
 #define WX_MAX_JUMBO_FRAME_SIZE      9432 /* max payload 9414 */
-#define VMDQ_P(p)                    p
+/* must account for pools assigned to VFs. */
+#ifdef CONFIG_PCI_IOV
+#define VMDQ_P(p)       ((p) + wx->ring_feature[RING_F_VMDQ].offset)
+#else
+#define VMDQ_P(p)       (p)
+#endif
 
 /* Supported Rx Buffer Sizes */
 #define WX_RXBUFFER_256      256    /* Used for skb receive header */
@@ -1000,6 +1027,10 @@ struct vf_data_storage {
 	bool link_enable;
 	bool trusted;
 	int xcast_mode;
+
+	u16 vf_mc_hashes[WX_MAX_VF_MC_ENTRIES];
+	u16 num_vf_mc_hashes;
+	u16 vlan_count;
 };
 
 struct vf_macvlans {
@@ -1012,6 +1043,7 @@ struct vf_macvlans {
 
 enum wx_pf_flags {
 	WX_FLAG_VMDQ_ENABLED,
+	WX_FLAG2_VLAN_PROMISC,
 	WX_FLAG_SRIOV_ENABLED,
 	WX_PF_FLAGS_NBITS		/* must be last */
 };
@@ -1079,6 +1111,8 @@ struct wx {
 	struct wx_ring *tx_ring[64] ____cacheline_aligned_in_smp;
 	struct wx_ring *rx_ring[64];
 	struct wx_q_vector *q_vector[64];
+	int num_rx_pools; /* does not include pools assigned to VFs */
+	int num_rx_queues_per_pool;
 
 	unsigned int queues_per_pool;
 	struct msix_entry *msix_q_entries;
@@ -1112,7 +1146,7 @@ struct wx {
 	struct vf_data_storage *vfinfo;
 	struct vf_macvlans vf_mvs;
 	struct vf_macvlans *mv_list;
-
+	unsigned long fwd_bitmask; /* bitmask indicating in use pools */
 	int (*setup_tc)(struct net_device *netdev, u8 tc);
 };
 
-- 
2.43.2

[PATCH net-next v3 4/6] net: libwx: Add msg task func

[Mengyuan Lou]

Implement wx_msg_task which is used to process mailbox
messages sent by vf.

Signed-off-by: Mengyuan Lou <mengyuanlou@net-swift.com>
---
 drivers/net/ethernet/wangxun/libwx/wx_hw.c    |  12 +-
 drivers/net/ethernet/wangxun/libwx/wx_hw.h    |   4 +
 drivers/net/ethernet/wangxun/libwx/wx_mbx.h   |  50 ++
 drivers/net/ethernet/wangxun/libwx/wx_sriov.c | 749 ++++++++++++++++++
 drivers/net/ethernet/wangxun/libwx/wx_sriov.h |   1 +
 drivers/net/ethernet/wangxun/libwx/wx_type.h  |  17 +
 6 files changed, 829 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/wangxun/libwx/wx_hw.c b/drivers/net/ethernet/wangxun/libwx/wx_hw.c
index c23d1bc8a9b7..c0a2348848bf 100644
--- a/drivers/net/ethernet/wangxun/libwx/wx_hw.c
+++ b/drivers/net/ethernet/wangxun/libwx/wx_hw.c
@@ -851,7 +851,7 @@ void wx_flush_sw_mac_table(struct wx *wx)
 }
 EXPORT_SYMBOL(wx_flush_sw_mac_table);
 
-static int wx_add_mac_filter(struct wx *wx, u8 *addr, u16 pool)
+int wx_add_mac_filter(struct wx *wx, u8 *addr, u16 pool)
 {
 	u32 i;
 
@@ -881,8 +881,9 @@ static int wx_add_mac_filter(struct wx *wx, u8 *addr, u16 pool)
 	}
 	return -ENOMEM;
 }
+EXPORT_SYMBOL(wx_add_mac_filter);
 
-static int wx_del_mac_filter(struct wx *wx, u8 *addr, u16 pool)
+int wx_del_mac_filter(struct wx *wx, u8 *addr, u16 pool)
 {
 	u32 i;
 
@@ -905,6 +906,7 @@ static int wx_del_mac_filter(struct wx *wx, u8 *addr, u16 pool)
 	}
 	return -ENOMEM;
 }
+EXPORT_SYMBOL(wx_del_mac_filter);
 
 static int wx_available_rars(struct wx *wx)
 {
@@ -1309,7 +1311,7 @@ static void wx_set_ethertype_anti_spoofing(struct wx *wx, bool enable, int vf)
 	wr32(wx, WX_TDM_ETYPE_AS(reg_offset), pfvfspoof);
 }
 
-static int wx_set_vf_spoofchk(struct net_device *netdev, int vf, bool setting)
+int wx_set_vf_spoofchk(struct net_device *netdev, int vf, bool setting)
 {
 	u32 index = vf / 32, vf_bit = vf % 32;
 	struct wx *wx = netdev_priv(netdev);
@@ -1328,6 +1330,7 @@ static int wx_set_vf_spoofchk(struct net_device *netdev, int vf, bool setting)
 
 	return 0;
 }
+EXPORT_SYMBOL(wx_set_vf_spoofchk);
 
 static void wx_configure_virtualization(struct wx *wx)
 {
@@ -2352,7 +2355,7 @@ static int wx_set_vlvf(struct wx *wx, u32 vlan, u32 vind, bool vlan_on,
  *
  *  Turn on/off specified VLAN in the VLAN filter table.
  **/
-static int wx_set_vfta(struct wx *wx, u32 vlan, u32 vind, bool vlan_on)
+int wx_set_vfta(struct wx *wx, u32 vlan, u32 vind, bool vlan_on)
 {
 	u32 bitindex, vfta, targetbit;
 	bool vfta_changed = false;
@@ -2398,6 +2401,7 @@ static int wx_set_vfta(struct wx *wx, u32 vlan, u32 vind, bool vlan_on)
 
 	return 0;
 }
+EXPORT_SYMBOL(wx_set_vfta);
 
 /**
  *  wx_clear_vfta - Clear VLAN filter table
diff --git a/drivers/net/ethernet/wangxun/libwx/wx_hw.h b/drivers/net/ethernet/wangxun/libwx/wx_hw.h
index 9e219fa717a2..ea2b7c932274 100644
--- a/drivers/net/ethernet/wangxun/libwx/wx_hw.h
+++ b/drivers/net/ethernet/wangxun/libwx/wx_hw.h
@@ -25,9 +25,12 @@ void wx_init_eeprom_params(struct wx *wx);
 void wx_get_mac_addr(struct wx *wx, u8 *mac_addr);
 void wx_init_rx_addrs(struct wx *wx);
 void wx_mac_set_default_filter(struct wx *wx, u8 *addr);
+int wx_add_mac_filter(struct wx *wx, u8 *addr, u16 pool);
+int wx_del_mac_filter(struct wx *wx, u8 *addr, u16 pool);
 void wx_flush_sw_mac_table(struct wx *wx);
 int wx_set_mac(struct net_device *netdev, void *p);
 void wx_disable_rx(struct wx *wx);
+int wx_set_vf_spoofchk(struct net_device *netdev, int vf, bool setting);
 void wx_set_rx_mode(struct net_device *netdev);
 int wx_change_mtu(struct net_device *netdev, int new_mtu);
 void wx_disable_rx_queue(struct wx *wx, struct wx_ring *ring);
@@ -39,6 +42,7 @@ int wx_stop_adapter(struct wx *wx);
 void wx_reset_misc(struct wx *wx);
 int wx_get_pcie_msix_counts(struct wx *wx, u16 *msix_count, u16 max_msix_count);
 int wx_sw_init(struct wx *wx);
+int wx_set_vfta(struct wx *wx, u32 vlan, u32 vind, bool vlan_on);
 int wx_vlan_rx_add_vid(struct net_device *netdev, __be16 proto, u16 vid);
 int wx_vlan_rx_kill_vid(struct net_device *netdev, __be16 proto, u16 vid);
 int wx_fc_enable(struct wx *wx, bool tx_pause, bool rx_pause);
diff --git a/drivers/net/ethernet/wangxun/libwx/wx_mbx.h b/drivers/net/ethernet/wangxun/libwx/wx_mbx.h
index 3c70654a8b14..00a9dda8365c 100644
--- a/drivers/net/ethernet/wangxun/libwx/wx_mbx.h
+++ b/drivers/net/ethernet/wangxun/libwx/wx_mbx.h
@@ -21,10 +21,60 @@
 #define WX_MBVFICR_VFREQ_MASK GENMASK(15, 0)
 #define WX_MBVFICR_VFACK_MASK GENMASK(31, 16)
 
+#define WX_VT_MSGTYPE_ACK     BIT(31)
+#define WX_VT_MSGTYPE_NACK    BIT(30)
+#define WX_VT_MSGTYPE_CTS     BIT(29)
+#define WX_VT_MSGINFO_SHIFT   16
 #define WX_VT_MSGINFO_MASK    GENMASK(23, 16)
 
+enum wx_pfvf_api_rev {
+	wx_mbox_api_null,
+	wx_mbox_api_10,      /* API version 1.0, linux/freebsd VF driver */
+	wx_mbox_api_11,      /* API version 1.1, linux/freebsd VF driver */
+	wx_mbox_api_12,      /* API version 1.2, linux/freebsd VF driver */
+	wx_mbox_api_13,      /* API version 1.3, linux/freebsd VF driver */
+	wx_mbox_api_20,      /* API version 2.0, solaris Phase1 VF driver */
+	wx_mbox_api_unknown, /* indicates that API version is not known */
+};
+
+/* mailbox API, legacy requests */
+#define WX_VF_RESET                  0x01 /* VF requests reset */
+#define WX_VF_SET_MAC_ADDR           0x02 /* VF requests PF to set MAC addr */
+#define WX_VF_SET_MULTICAST          0x03 /* VF requests PF to set MC addr */
+#define WX_VF_SET_VLAN               0x04 /* VF requests PF to set VLAN */
+
+/* mailbox API, version 1.0 VF requests */
+#define WX_VF_SET_LPE                0x05 /* VF requests PF to set VMOLR.LPE */
+#define WX_VF_SET_MACVLAN            0x06 /* VF requests PF for unicast filter */
+#define WX_VF_API_NEGOTIATE          0x08 /* negotiate API version */
+
+/* mailbox API, version 1.1 VF requests */
+#define WX_VF_GET_QUEUES             0x09 /* get queue configuration */
+
+/* mailbox API, version 1.2 VF requests */
+#define WX_VF_GET_RETA               0x0a    /* VF request for RETA */
+#define WX_VF_GET_RSS_KEY            0x0b    /* get RSS key */
+#define WX_VF_UPDATE_XCAST_MODE      0x0c
+#define WX_VF_GET_LINK_STATE         0x10 /* get vf link state */
+#define WX_VF_GET_FW_VERSION         0x11 /* get fw version */
+#define WX_VF_BACKUP                 0x8001 /* VF requests backup */
+
+#define WX_PF_CONTROL_MSG            BIT(8) /* PF control message */
+#define WX_PF_NOFITY_VF_LINK_STATUS  0x1
+#define WX_PF_NOFITY_VF_NET_NOT_RUNNING BIT(31)
+
+#define WX_VF_TX_QUEUES              1 /* number of Tx queues supported */
+#define WX_VF_RX_QUEUES              2 /* number of Rx queues supported */
+#define WX_VF_TRANS_VLAN             3 /* Indication of port vlan */
+#define WX_VF_DEF_QUEUE              4 /* Default queue offset */
+
+#define WX_VF_PERMADDR_MSG_LEN       4
+
 enum wxvf_xcast_modes {
 	WXVF_XCAST_MODE_NONE = 0,
+	WXVF_XCAST_MODE_MULTI,
+	WXVF_XCAST_MODE_ALLMULTI,
+	WXVF_XCAST_MODE_PROMISC,
 };
 
 int wx_write_mbx_pf(struct wx *wx, u32 *msg, u16 size, u16 vf);
diff --git a/drivers/net/ethernet/wangxun/libwx/wx_sriov.c b/drivers/net/ethernet/wangxun/libwx/wx_sriov.c
index 032b75f23460..8ed72750e5a0 100644
--- a/drivers/net/ethernet/wangxun/libwx/wx_sriov.c
+++ b/drivers/net/ethernet/wangxun/libwx/wx_sriov.c
@@ -5,6 +5,7 @@
 #include <linux/pci.h>
 
 #include "wx_type.h"
+#include "wx_hw.h"
 #include "wx_mbx.h"
 #include "wx_sriov.h"
 
@@ -219,3 +220,751 @@ int wx_pci_sriov_configure(struct pci_dev *pdev, int num_vfs)
 	return num_vfs;
 }
 EXPORT_SYMBOL(wx_pci_sriov_configure);
+
+static int wx_set_vf_mac(struct wx *wx, u16 vf, unsigned char *mac_addr)
+{
+	int ret = 0;
+
+	wx_del_mac_filter(wx, wx->vfinfo[vf].vf_mac_addr, vf);
+	ret = wx_add_mac_filter(wx, mac_addr, vf);
+	if (ret >= 0)
+		memcpy(wx->vfinfo[vf].vf_mac_addr, mac_addr, ETH_ALEN);
+	else
+		memset(wx->vfinfo[vf].vf_mac_addr, 0, ETH_ALEN);
+
+	return ret;
+}
+
+static void wx_set_vmolr(struct wx *wx, u16 vf, bool aupe)
+{
+	u32 vmolr = rd32(wx, WX_PSR_VM_L2CTL(vf));
+
+	vmolr |=  WX_PSR_VM_L2CTL_BAM;
+	if (aupe)
+		vmolr |= WX_PSR_VM_L2CTL_AUPE;
+	else
+		vmolr &= ~WX_PSR_VM_L2CTL_AUPE;
+	wr32(wx, WX_PSR_VM_L2CTL(vf), vmolr);
+}
+
+static void wx_set_vmvir(struct wx *wx, u16 vid, u16 qos, u16 vf)
+{
+	u32 vmvir = vid | (qos << VLAN_PRIO_SHIFT) |
+		    WX_TDM_VLAN_INS_VLANA_DEFAULT;
+
+	wr32(wx, WX_TDM_VLAN_INS(vf), vmvir);
+}
+
+static int wx_set_vf_vlan(struct wx *wx, int add, int vid, u16 vf)
+{
+	/* VLAN 0 is a special case, don't allow it to be removed */
+	if (!vid && !add)
+		return 0;
+
+	return wx_set_vfta(wx, vid, vf, (bool)add);
+}
+
+/**
+ *  wx_set_vlan_anti_spoofing - Enable/Disable VLAN anti-spoofing
+ *  @wx: pointer to hardware structure
+ *  @enable: enable or disable switch for VLAN anti-spoofing
+ *  @vf: Virtual Function pool - VF Pool to set for VLAN anti-spoofing
+ *
+ **/
+static void wx_set_vlan_anti_spoofing(struct wx *wx, bool enable, int vf)
+{
+	u32 index = vf / 32, vf_bit = vf % 32;
+	u32 pfvfspoof;
+
+	pfvfspoof = rd32(wx, WX_TDM_VLAN_AS(index));
+	if (enable)
+		pfvfspoof |= BIT(vf_bit);
+	else
+		pfvfspoof &= ~BIT(vf_bit);
+	wr32(wx, WX_TDM_VLAN_AS(index), pfvfspoof);
+}
+
+static inline void wx_write_qde(struct wx *wx, u32 vf, u32 qde)
+{
+	struct wx_ring_feature *vmdq = &wx->ring_feature[RING_F_VMDQ];
+	u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask);
+	u32 reg = 0, n = vf * q_per_pool / 32;
+	u32 i = vf * q_per_pool;
+
+	reg = rd32(wx, WX_RDM_PF_QDE(n));
+	for (i = (vf * q_per_pool - n * 32);
+	     i < ((vf + 1) * q_per_pool - n * 32);
+	     i++) {
+		if (qde == 1)
+			reg |= qde << i;
+		else
+			reg &= qde << i;
+	}
+
+	wr32(wx, WX_RDM_PF_QDE(n), reg);
+}
+
+static void wx_clear_vmvir(struct wx *wx, u32 vf)
+{
+	wr32(wx, WX_TDM_VLAN_INS(vf), 0);
+}
+
+static inline void wx_ping_vf(struct wx *wx, int vf)
+{
+	u32 ping;
+
+	ping = WX_PF_CONTROL_MSG;
+	if (wx->vfinfo[vf].clear_to_send)
+		ping |= WX_VT_MSGTYPE_CTS;
+	wx_write_mbx_pf(wx, &ping, 1, vf);
+}
+
+/**
+ * wx_set_vf_rx_tx - Set VF rx tx
+ * @wx: Pointer to wx struct
+ * @vf: VF identifier
+ *
+ * Set or reset correct transmit and receive for vf
+ **/
+static void wx_set_vf_rx_tx(struct wx *wx, int vf)
+{
+	u32 reg_cur_tx, reg_cur_rx, reg_req_tx, reg_req_rx;
+	u32 index, vf_bit;
+
+	vf_bit = vf % 32;
+	index = vf / 32;
+
+	reg_cur_tx = rd32(wx, WX_TDM_VF_TE(index));
+	reg_cur_rx = rd32(wx, WX_RDM_VF_RE(index));
+
+	if (wx->vfinfo[vf].link_enable) {
+		reg_req_tx = reg_cur_tx | BIT(vf_bit);
+		reg_req_rx = reg_cur_rx | BIT(vf_bit);
+		/* Enable particular VF */
+		if (reg_cur_tx != reg_req_tx)
+			wr32(wx, WX_TDM_VF_TE(index), reg_req_tx);
+		if (reg_cur_rx != reg_req_rx)
+			wr32(wx, WX_RDM_VF_RE(index), reg_req_rx);
+	} else {
+		reg_req_tx = BIT(vf_bit);
+		reg_req_rx = BIT(vf_bit);
+		/* Disable particular VF */
+		if (reg_cur_tx & reg_req_tx)
+			wr32(wx, WX_TDM_VFTE_CLR(index), reg_req_tx);
+		if (reg_cur_rx & reg_req_rx)
+			wr32(wx, WX_RDM_VFRE_CLR(index), reg_req_rx);
+	}
+}
+
+static int wx_get_vf_queues(struct wx *wx, u32 *msgbuf, u32 vf)
+{
+	struct wx_ring_feature *vmdq = &wx->ring_feature[RING_F_VMDQ];
+	unsigned int default_tc = 0;
+
+	/* verify the PF is supporting the correct APIs */
+	switch (wx->vfinfo[vf].vf_api) {
+	case wx_mbox_api_11 ... wx_mbox_api_20:
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	/* only allow 1 Tx queue for bandwidth limiting */
+	msgbuf[WX_VF_TX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask);
+	msgbuf[WX_VF_RX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask);
+
+	if (wx->vfinfo[vf].pf_vlan || wx->vfinfo[vf].pf_qos)
+		msgbuf[WX_VF_TRANS_VLAN] = 1;
+	else
+		msgbuf[WX_VF_TRANS_VLAN] = 0;
+
+	/* notify VF of default queue */
+	msgbuf[WX_VF_DEF_QUEUE] = default_tc;
+
+	return 0;
+}
+
+static inline void wx_vf_reset_event(struct wx *wx, u16 vf)
+{
+	struct vf_data_storage *vfinfo = &wx->vfinfo[vf];
+	u8 num_tcs = netdev_get_num_tc(wx->netdev);
+
+	/* add PF assigned VLAN or VLAN 0 */
+	wx_set_vf_vlan(wx, true, vfinfo->pf_vlan, vf);
+
+	/* reset offloads to defaults */
+	wx_set_vmolr(wx, vf, !vfinfo->pf_vlan);
+
+	/* set outgoing tags for VFs */
+	if (!vfinfo->pf_vlan && !vfinfo->pf_qos && !num_tcs) {
+		wx_clear_vmvir(wx, vf);
+	} else {
+		if (vfinfo->pf_qos || !num_tcs)
+			wx_set_vmvir(wx, vfinfo->pf_vlan,
+				     vfinfo->pf_qos, vf);
+		else
+			wx_set_vmvir(wx, vfinfo->pf_vlan,
+				     wx->default_up, vf);
+	}
+
+	/* reset multicast table array for vf */
+	wx->vfinfo[vf].num_vf_mc_hashes = 0;
+
+	/* Flush and reset the mta with the new values */
+	wx_set_rx_mode(wx->netdev);
+
+	wx_del_mac_filter(wx, wx->vfinfo[vf].vf_mac_addr, vf);
+
+	/* reset VF api back to unknown */
+	wx->vfinfo[vf].vf_api = wx_mbox_api_10;
+}
+
+static void wx_vf_reset_msg(struct wx *wx, u16 vf)
+{
+	unsigned char *vf_mac = wx->vfinfo[vf].vf_mac_addr;
+	struct net_device *dev = wx->netdev;
+	u32 msgbuf[5] = {0, 0, 0, 0, 0};
+	u8 *addr = (u8 *)(&msgbuf[1]);
+	u32 reg = 0, index, vf_bit;
+	int pf_max_frame;
+
+	/* reset the filters for the device */
+	wx_vf_reset_event(wx, vf);
+
+	/* set vf mac address */
+	if (!is_zero_ether_addr(vf_mac))
+		wx_set_vf_mac(wx, vf, vf_mac);
+
+	vf_bit = vf % 32;
+	index = vf / 32;
+
+	/* force drop enable for all VF Rx queues */
+	wx_write_qde(wx, vf, 1);
+
+	/* set transmit and receive for vf */
+	wx_set_vf_rx_tx(wx, vf);
+
+	pf_max_frame = dev->mtu + ETH_HLEN;
+
+	if (pf_max_frame > ETH_FRAME_LEN)
+		reg = BIT(vf_bit);
+	wr32(wx, WX_RDM_VFRE_CLR(index), reg);
+
+	/* enable VF mailbox for further messages */
+	wx->vfinfo[vf].clear_to_send = true;
+
+	/* reply to reset with ack and vf mac address */
+	msgbuf[0] = WX_VF_RESET;
+	if (!is_zero_ether_addr(vf_mac)) {
+		msgbuf[0] |= WX_VT_MSGTYPE_ACK;
+		memcpy(addr, vf_mac, ETH_ALEN);
+	} else {
+		msgbuf[0] |= WX_VT_MSGTYPE_NACK;
+		wx_err(wx, "VF %d has no MAC address assigned", vf);
+	}
+
+	/* Piggyback the multicast filter type so VF can compute the
+	 * correct vectors
+	 */
+	msgbuf[3] = wx->mac.mc_filter_type;
+	wx_write_mbx_pf(wx, msgbuf, WX_VF_PERMADDR_MSG_LEN, vf);
+}
+
+static int wx_set_vf_mac_addr(struct wx *wx, u32 *msgbuf, u16 vf)
+{
+	u8 *new_mac = ((u8 *)(&msgbuf[1]));
+
+	if (!is_valid_ether_addr(new_mac)) {
+		wx_err(wx, "VF %d attempted to set invalid mac\n", vf);
+		return -EINVAL;
+	}
+
+	if (wx->vfinfo[vf].pf_set_mac &&
+	    memcmp(wx->vfinfo[vf].vf_mac_addr, new_mac, ETH_ALEN)) {
+		wx_err(wx,
+		       "VF %d attempted to set a MAC address but it already had a MAC address.",
+		       vf);
+		return -EBUSY;
+	}
+	return wx_set_vf_mac(wx, vf, new_mac) < 0;
+}
+
+static int wx_set_vf_multicasts(struct wx *wx, u32 *msgbuf, u32 vf)
+{
+	u16 entries = (msgbuf[0] & WX_VT_MSGINFO_MASK)
+		      >> WX_VT_MSGINFO_SHIFT;
+	struct vf_data_storage *vfinfo = &wx->vfinfo[vf];
+	u32 vmolr = rd32(wx, WX_PSR_VM_L2CTL(vf));
+	u32 vector_bit, vector_reg, mta_reg, i;
+	u16 *hash_list = (u16 *)&msgbuf[1];
+
+	/* only so many hash values supported */
+	entries = min_t(u16, entries, WX_MAX_VF_MC_ENTRIES);
+	/* salt away the number of multi cast addresses assigned
+	 * to this VF for later use to restore when the PF multi cast
+	 * list changes
+	 */
+	vfinfo->num_vf_mc_hashes = entries;
+
+	/* VFs are limited to using the MTA hash table for their multicast
+	 * addresses
+	 */
+	for (i = 0; i < entries; i++)
+		vfinfo->vf_mc_hashes[i] = hash_list[i];
+
+	for (i = 0; i < vfinfo->num_vf_mc_hashes; i++) {
+		vector_reg = (vfinfo->vf_mc_hashes[i] >> 5) & 0x7F;
+		vector_bit = vfinfo->vf_mc_hashes[i] & 0x1F;
+		/* errata 5: maintain a copy of the register table conf */
+		mta_reg = wx->mac.mta_shadow[vector_reg];
+		mta_reg |= (1 << vector_bit);
+		wx->mac.mta_shadow[vector_reg] = mta_reg;
+		wr32(wx, WX_PSR_MC_TBL(vector_reg), mta_reg);
+	}
+	vmolr |= WX_PSR_VM_L2CTL_ROMPE;
+	wr32(wx, WX_PSR_VM_L2CTL(vf), vmolr);
+
+	return 0;
+}
+
+static int wx_set_vf_lpe(struct wx *wx, u32 max_frame, u32 vf)
+{
+	struct net_device *netdev = wx->netdev;
+	u32 index, vf_bit, vfre;
+	u32 max_frs, reg_val;
+	int pf_max_frame;
+	int err = 0;
+
+	pf_max_frame = netdev->mtu + ETH_HLEN +  ETH_FCS_LEN + VLAN_HLEN;
+	switch (wx->vfinfo[vf].vf_api) {
+	case wx_mbox_api_11 ... wx_mbox_api_13:
+		/* Version 1.1 supports jumbo frames on VFs if PF has
+		 * jumbo frames enabled which means legacy VFs are
+		 * disabled
+		 */
+		if (pf_max_frame > ETH_FRAME_LEN)
+			break;
+		fallthrough;
+	default:
+		/* If the PF or VF are running w/ jumbo frames enabled
+		 * we need to shut down the VF Rx path as we cannot
+		 * support jumbo frames on legacy VFs
+		 */
+		if (pf_max_frame > ETH_FRAME_LEN ||
+		    (max_frame > (ETH_FRAME_LEN + ETH_FCS_LEN + VLAN_HLEN)))
+			err = -EINVAL;
+		break;
+	}
+
+	/* determine VF receive enable location */
+	vf_bit = vf % 32;
+	index = vf / 32;
+
+	/* enable or disable receive depending on error */
+	vfre = rd32(wx, WX_RDM_VF_RE(index));
+	if (err)
+		vfre &= ~BIT(vf_bit);
+	else
+		vfre |= BIT(vf_bit);
+	wr32(wx, WX_RDM_VF_RE(index), vfre);
+
+	if (err) {
+		wx_err(wx, "VF max_frame %d out of range\n", max_frame);
+		return err;
+	}
+	/* pull current max frame size from hardware */
+	max_frs = DIV_ROUND_UP(max_frame, 1024);
+	reg_val = rd32(wx, WX_MAC_WDG_TIMEOUT) & WX_MAC_WDG_TIMEOUT_WTO_MASK;
+	if (max_frs > (reg_val + WX_MAC_WDG_TIMEOUT_WTO_DELTA))
+		wr32(wx, WX_MAC_WDG_TIMEOUT, max_frs - WX_MAC_WDG_TIMEOUT_WTO_DELTA);
+
+	return 0;
+}
+
+static int wx_find_vlvf_entry(struct wx *wx, u32 vlan)
+{
+	int regindex;
+	u32 vlvf;
+
+	/* short cut the special case */
+	if (vlan == 0)
+		return 0;
+
+	/* Search for the vlan id in the VLVF entries */
+	for (regindex = 1; regindex < WX_PSR_VLAN_SWC_ENTRIES; regindex++) {
+		wr32(wx, WX_PSR_VLAN_SWC_IDX, regindex);
+		vlvf = rd32(wx, WX_PSR_VLAN_SWC);
+		if ((vlvf & VLAN_VID_MASK) == vlan)
+			break;
+	}
+
+	/* Return a negative value if not found */
+	if (regindex >= WX_PSR_VLAN_SWC_ENTRIES)
+		regindex = -EINVAL;
+
+	return regindex;
+}
+
+static int wx_set_vf_macvlan(struct wx *wx,
+			     u16 vf, int index, unsigned char *mac_addr)
+{
+	struct vf_macvlans *entry;
+	struct list_head *pos;
+	int retval = 0;
+
+	if (index <= 1) {
+		list_for_each(pos, &wx->vf_mvs.l) {
+			entry = list_entry(pos, struct vf_macvlans, l);
+			if (entry->vf == vf) {
+				entry->vf = -1;
+				entry->free = true;
+				entry->is_macvlan = false;
+				wx_del_mac_filter(wx, entry->vf_macvlan, vf);
+			}
+		}
+	}
+
+	/* If index was zero then we were asked to clear the uc list
+	 * for the VF.  We're done.
+	 */
+	if (!index)
+		return 0;
+
+	entry = NULL;
+
+	list_for_each(pos, &wx->vf_mvs.l) {
+		entry = list_entry(pos, struct vf_macvlans, l);
+		if (entry->free)
+			break;
+	}
+
+	/* If we traversed the entire list and didn't find a free entry
+	 * then we're out of space on the RAR table.  Also entry may
+	 * be NULL because the original memory allocation for the list
+	 * failed, which is not fatal but does mean we can't support
+	 * VF requests for MACVLAN because we couldn't allocate
+	 * memory for the list manangbeent required.
+	 */
+	if (!entry || !entry->free)
+		return -ENOSPC;
+
+	retval = wx_add_mac_filter(wx, mac_addr, vf);
+	if (retval >= 0) {
+		entry->free = false;
+		entry->is_macvlan = true;
+		entry->vf = vf;
+		memcpy(entry->vf_macvlan, mac_addr, ETH_ALEN);
+	}
+
+	return retval;
+}
+
+static int wx_set_vf_vlan_msg(struct wx *wx, u32 *msgbuf, u16 vf)
+{
+	int add = (msgbuf[0] & WX_VT_MSGINFO_MASK) >> WX_VT_MSGINFO_SHIFT;
+	int vid = (msgbuf[1] & WX_PSR_VLAN_SWC_VLANID_MASK);
+	int err;
+
+	if (add)
+		wx->vfinfo[vf].vlan_count++;
+	else if (wx->vfinfo[vf].vlan_count)
+		wx->vfinfo[vf].vlan_count--;
+
+	/* in case of promiscuous mode any VLAN filter set for a VF must
+	 * also have the PF pool added to it.
+	 */
+	if (add && wx->netdev->flags & IFF_PROMISC)
+		err = wx_set_vf_vlan(wx, add, vid, VMDQ_P(0));
+
+	err = wx_set_vf_vlan(wx, add, vid, vf);
+	if (!err && wx->vfinfo[vf].spoofchk_enabled)
+		wx_set_vlan_anti_spoofing(wx, true, vf);
+
+	/* Go through all the checks to see if the VLAN filter should
+	 * be wiped completely.
+	 */
+	if (!add && wx->netdev->flags & IFF_PROMISC) {
+		u32 bits = 0, vlvf;
+		int reg_ndx;
+
+		reg_ndx = wx_find_vlvf_entry(wx, vid);
+		if (reg_ndx < 0)
+			goto out;
+		wr32(wx, WX_PSR_VLAN_SWC_IDX, reg_ndx);
+		vlvf = rd32(wx, WX_PSR_VLAN_SWC);
+		/* See if any other pools are set for this VLAN filter
+		 * entry other than the PF.
+		 */
+		if (VMDQ_P(0) < 32) {
+			bits = rd32(wx, WX_PSR_VLAN_SWC_VM_L);
+			bits &= ~BIT(VMDQ_P(0));
+			if (wx->mac.type == wx_mac_sp)
+				bits |= rd32(wx, WX_PSR_VLAN_SWC_VM_H);
+		} else {
+			if (wx->mac.type == wx_mac_sp)
+				bits = rd32(wx, WX_PSR_VLAN_SWC_VM_H);
+			bits &= ~BIT(VMDQ_P(0) % 32);
+			bits |= rd32(wx, WX_PSR_VLAN_SWC_VM_L);
+		}
+		/* If the filter was removed then ensure PF pool bit
+		 * is cleared if the PF only added itself to the pool
+		 * because the PF is in promiscuous mode.
+		 */
+		if ((vlvf & VLAN_VID_MASK) == vid && !bits)
+			wx_set_vf_vlan(wx, add, vid, VMDQ_P(0));
+	}
+
+out:
+	return err;
+}
+
+static int wx_set_vf_macvlan_msg(struct wx *wx, u32 *msgbuf, u16 vf)
+{
+	int index = (msgbuf[0] & WX_VT_MSGINFO_MASK) >>
+		    WX_VT_MSGINFO_SHIFT;
+	u8 *new_mac = ((u8 *)(&msgbuf[1]));
+	int err;
+
+	if (wx->vfinfo[vf].pf_set_mac && index > 0) {
+		wx_err(wx, "VF %d requested MACVLAN filter but is administratively denied\n", vf);
+		return -EINVAL;
+	}
+
+	/* An non-zero index indicates the VF is setting a filter */
+	if (index) {
+		if (!is_valid_ether_addr(new_mac)) {
+			wx_err(wx, "VF %d attempted to set invalid mac\n", vf);
+			return -EINVAL;
+		}
+		/* If the VF is allowed to set MAC filters then turn off
+		 * anti-spoofing to avoid false positives.
+		 */
+		if (wx->vfinfo[vf].spoofchk_enabled)
+			wx_set_vf_spoofchk(wx->netdev, vf, false);
+	}
+
+	err = wx_set_vf_macvlan(wx, vf, index, new_mac);
+	if (err == -ENOSPC)
+		wx_err(wx,
+		       "VF %d has requested a MACVLAN filter but there is no space for it\n",
+		       vf);
+
+	return err < 0;
+}
+
+static int wx_negotiate_vf_api(struct wx *wx, u32 *msgbuf, u32 vf)
+{
+	int api = msgbuf[1];
+
+	switch (api) {
+	case wx_mbox_api_10 ... wx_mbox_api_13:
+		wx->vfinfo[vf].vf_api = api;
+		return 0;
+	default:
+		wx_err(wx, "VF %d requested invalid api version %u\n", vf, api);
+		return -EINVAL;
+	}
+}
+
+static int wx_get_vf_link_state(struct wx *wx, u32 *msgbuf, u32 vf)
+{
+	/* verify the PF is supporting the correct API */
+	switch (wx->vfinfo[vf].vf_api) {
+	case wx_mbox_api_12 ... wx_mbox_api_13:
+		break;
+	default:
+		return -EOPNOTSUPP;
+	}
+
+	msgbuf[1] = wx->vfinfo[vf].link_enable;
+
+	return 0;
+}
+
+static int wx_get_fw_version(struct wx *wx, u32 *msgbuf, u32 vf)
+{
+	unsigned long fw_version = 0ULL;
+	int ret = 0;
+
+	/* verify the PF is supporting the correct API */
+	switch (wx->vfinfo[vf].vf_api) {
+	case wx_mbox_api_12 ... wx_mbox_api_13:
+		break;
+	default:
+		return -EOPNOTSUPP;
+	}
+
+	ret = kstrtoul(wx->eeprom_id, 16, &fw_version);
+	if (ret)
+		return -EOPNOTSUPP;
+	msgbuf[1] = fw_version;
+
+	return 0;
+}
+
+static int wx_update_vf_xcast_mode(struct wx *wx, u32 *msgbuf, u32 vf)
+{
+	int xcast_mode = msgbuf[1];
+	u32 vmolr, disable, enable;
+
+	/* verify the PF is supporting the correct APIs */
+	switch (wx->vfinfo[vf].vf_api) {
+	case wx_mbox_api_12:
+		/* promisc introduced in 1.3 version */
+		if (xcast_mode == WXVF_XCAST_MODE_PROMISC)
+			return -EOPNOTSUPP;
+		fallthrough;
+	case wx_mbox_api_13:
+		break;
+	default:
+		return -EOPNOTSUPP;
+	}
+	if (wx->vfinfo[vf].xcast_mode == xcast_mode)
+		goto out;
+
+	switch (xcast_mode) {
+	case WXVF_XCAST_MODE_NONE:
+		disable = WX_PSR_VM_L2CTL_BAM | WX_PSR_VM_L2CTL_ROMPE |
+			  WX_PSR_VM_L2CTL_MPE | WX_PSR_VM_L2CTL_UPE | WX_PSR_VM_L2CTL_VPE;
+		enable = 0;
+		break;
+	case WXVF_XCAST_MODE_MULTI:
+		disable = WX_PSR_VM_L2CTL_MPE | WX_PSR_VM_L2CTL_UPE | WX_PSR_VM_L2CTL_VPE;
+		enable = WX_PSR_VM_L2CTL_BAM | WX_PSR_VM_L2CTL_ROMPE;
+		break;
+	case WXVF_XCAST_MODE_ALLMULTI:
+		disable = WX_PSR_VM_L2CTL_UPE | WX_PSR_VM_L2CTL_VPE;
+		enable = WX_PSR_VM_L2CTL_BAM | WX_PSR_VM_L2CTL_ROMPE | WX_PSR_VM_L2CTL_MPE;
+		break;
+	case WXVF_XCAST_MODE_PROMISC:
+		disable = 0;
+		enable = WX_PSR_VM_L2CTL_BAM | WX_PSR_VM_L2CTL_ROMPE |
+			 WX_PSR_VM_L2CTL_MPE | WX_PSR_VM_L2CTL_UPE | WX_PSR_VM_L2CTL_VPE;
+		break;
+	default:
+		return -EOPNOTSUPP;
+	}
+
+	vmolr = rd32(wx, WX_PSR_VM_L2CTL(vf));
+	vmolr &= ~disable;
+	vmolr |= enable;
+	wr32(wx, WX_PSR_VM_L2CTL(vf), vmolr);
+
+	wx->vfinfo[vf].xcast_mode = xcast_mode;
+out:
+	msgbuf[1] = xcast_mode;
+
+	return 0;
+}
+
+static void wx_rcv_msg_from_vf(struct wx *wx, u16 vf)
+{
+	u16 mbx_size = WX_VXMAILBOX_SIZE;
+	u32 msgbuf[WX_VXMAILBOX_SIZE];
+	int retval;
+
+	retval = wx_read_mbx_pf(wx, msgbuf, mbx_size, vf);
+	if (retval) {
+		wx_err(wx, "Error receiving message from VF\n");
+		return;
+	}
+
+	/* this is a message we already processed, do nothing */
+	if (msgbuf[0] & (WX_VT_MSGTYPE_ACK | WX_VT_MSGTYPE_NACK))
+		return;
+
+	if (msgbuf[0] == WX_VF_RESET) {
+		wx_vf_reset_msg(wx, vf);
+		return;
+	}
+
+	/* until the vf completes a virtual function reset it should not be
+	 * allowed to start any configuration.
+	 */
+	if (!wx->vfinfo[vf].clear_to_send) {
+		msgbuf[0] |= WX_VT_MSGTYPE_NACK;
+		wx_write_mbx_pf(wx, msgbuf, 1, vf);
+		return;
+	}
+
+	switch ((msgbuf[0] & U16_MAX)) {
+	case WX_VF_SET_MAC_ADDR:
+		retval = wx_set_vf_mac_addr(wx, msgbuf, vf);
+		break;
+	case WX_VF_SET_MULTICAST:
+		retval = wx_set_vf_multicasts(wx, msgbuf, vf);
+		break;
+	case WX_VF_SET_VLAN:
+		retval = wx_set_vf_vlan_msg(wx, msgbuf, vf);
+		break;
+	case WX_VF_SET_LPE:
+		if (msgbuf[1] > WX_MAX_JUMBO_FRAME_SIZE) {
+			wx_err(wx, "VF max_frame %d out of range\n", msgbuf[1]);
+			return;
+		}
+		retval = wx_set_vf_lpe(wx, msgbuf[1], vf);
+		break;
+	case WX_VF_SET_MACVLAN:
+		retval = wx_set_vf_macvlan_msg(wx, msgbuf, vf);
+		break;
+	case WX_VF_API_NEGOTIATE:
+		retval = wx_negotiate_vf_api(wx, msgbuf, vf);
+		break;
+	case WX_VF_GET_QUEUES:
+		retval = wx_get_vf_queues(wx, msgbuf, vf);
+		break;
+	case WX_VF_GET_LINK_STATE:
+		retval = wx_get_vf_link_state(wx, msgbuf, vf);
+		break;
+	case WX_VF_GET_FW_VERSION:
+		retval = wx_get_fw_version(wx, msgbuf, vf);
+		break;
+	case WX_VF_UPDATE_XCAST_MODE:
+		retval = wx_update_vf_xcast_mode(wx, msgbuf, vf);
+		break;
+	case WX_VF_BACKUP:
+		break;
+	default:
+		wx_err(wx, "Unhandled Msg %8.8x\n", msgbuf[0]);
+		break;
+	}
+
+	/* notify the VF of the results of what it sent us */
+	if (retval)
+		msgbuf[0] |= WX_VT_MSGTYPE_NACK;
+	else
+		msgbuf[0] |= WX_VT_MSGTYPE_ACK;
+
+	msgbuf[0] |= WX_VT_MSGTYPE_CTS;
+
+	wx_write_mbx_pf(wx, msgbuf, mbx_size, vf);
+}
+
+static void wx_rcv_ack_from_vf(struct wx *wx, u16 vf)
+{
+	u32 msg = WX_VT_MSGTYPE_NACK;
+
+	/* if device isn't clear to send it shouldn't be reading either */
+	if (!wx->vfinfo[vf].clear_to_send)
+		wx_write_mbx_pf(wx, &msg, 1, vf);
+}
+
+void wx_msg_task(struct wx *wx)
+{
+	u16 vf;
+
+	for (vf = 0; vf < wx->num_vfs; vf++) {
+		/* process any reset requests */
+		if (!wx_check_for_rst_pf(wx, vf))
+			wx_vf_reset_event(wx, vf);
+
+		/* process any messages pending */
+		if (!wx_check_for_msg_pf(wx, vf))
+			wx_rcv_msg_from_vf(wx, vf);
+
+		/* process any acks */
+		if (!wx_check_for_ack_pf(wx, vf))
+			wx_rcv_ack_from_vf(wx, vf);
+	}
+}
+EXPORT_SYMBOL(wx_msg_task);
diff --git a/drivers/net/ethernet/wangxun/libwx/wx_sriov.h b/drivers/net/ethernet/wangxun/libwx/wx_sriov.h
index 17b547ae8862..f311774a2a18 100644
--- a/drivers/net/ethernet/wangxun/libwx/wx_sriov.h
+++ b/drivers/net/ethernet/wangxun/libwx/wx_sriov.h
@@ -6,5 +6,6 @@
 
 int wx_disable_sriov(struct wx *wx);
 int wx_pci_sriov_configure(struct pci_dev *pdev, int num_vfs);
+void wx_msg_task(struct wx *wx);
 
 #endif /* _WX_SRIOV_H_ */
diff --git a/drivers/net/ethernet/wangxun/libwx/wx_type.h b/drivers/net/ethernet/wangxun/libwx/wx_type.h
index 7d39429a147b..28dd879060fd 100644
--- a/drivers/net/ethernet/wangxun/libwx/wx_type.h
+++ b/drivers/net/ethernet/wangxun/libwx/wx_type.h
@@ -77,6 +77,8 @@
 
 /*********************** Receive DMA registers **************************/
 #define WX_RDM_VF_RE(_i)             (0x12004 + ((_i) * 4))
+#define WX_RDM_PF_QDE(_i)            (0x12080 + ((_i) * 4))
+#define WX_RDM_VFRE_CLR(_i)          (0x120A0 + ((_i) * 4))
 #define WX_RDM_DRP_PKT               0x12500
 #define WX_RDM_PKT_CNT               0x12504
 #define WX_RDM_BYTE_CNT_LSB          0x12508
@@ -120,6 +122,7 @@
 #define WX_TDM_VF_TE(_i)             (0x18004 + ((_i) * 4))
 #define WX_TDM_MAC_AS(_i)            (0x18060 + ((_i) * 4))
 #define WX_TDM_VLAN_AS(_i)           (0x18070 + ((_i) * 4))
+#define WX_TDM_VFTE_CLR(_i)          (0x180A0 + ((_i) * 4))
 
 /* TDM CTL BIT */
 #define WX_TDM_CTL_TE                BIT(0) /* Transmit Enable */
@@ -200,6 +203,7 @@
 #define WX_PSR_VM_L2CTL(_i)          (0x15600 + ((_i) * 4))
 #define WX_PSR_VM_L2CTL_UPE          BIT(4) /* unicast promiscuous */
 #define WX_PSR_VM_L2CTL_VACC         BIT(6) /* accept nomatched vlan */
+#define WX_PSR_VM_L2CTL_VPE          BIT(7) /* vlan promiscuous mode */
 #define WX_PSR_VM_L2CTL_AUPE         BIT(8) /* accept untagged packets */
 #define WX_PSR_VM_L2CTL_ROMPE        BIT(9) /* accept packets in MTA tbl */
 #define WX_PSR_VM_L2CTL_ROPE         BIT(10) /* accept packets in UC tbl */
@@ -243,6 +247,7 @@
 /* VLAN pool filtering masks */
 #define WX_PSR_VLAN_SWC_VIEN         BIT(31)  /* filter is valid */
 #define WX_PSR_VLAN_SWC_ENTRIES      64
+#define WX_PSR_VLAN_SWC_VLANID_MASK  GENMASK(11, 0)
 
 /********************************* RSEC **************************************/
 /* general rsec */
@@ -256,6 +261,9 @@
 /*********************** Transmit DMA registers **************************/
 /* transmit global control */
 #define WX_TDM_ETYPE_AS(_i)          (0x18058 + ((_i) * 4))
+#define WX_TDM_VLAN_INS(_i)          (0x18100 + ((_i) * 4))
+/* Per VF Port VLAN insertion rules */
+#define WX_TDM_VLAN_INS_VLANA_DEFAULT BIT(30) /* Always use default VLAN*/
 
 /****************************** TDB ******************************************/
 #define WX_TDB_PB_SZ(_i)             (0x1CC00 + ((_i) * 4))
@@ -296,6 +304,9 @@
 #define WX_MAC_WDG_TIMEOUT           0x1100C
 #define WX_MAC_RX_FLOW_CTRL          0x11090
 #define WX_MAC_RX_FLOW_CTRL_RFE      BIT(0) /* receive fc enable */
+
+#define WX_MAC_WDG_TIMEOUT_WTO_MASK  GENMASK(3, 0)
+#define WX_MAC_WDG_TIMEOUT_WTO_DELTA 2
 /* MDIO Registers */
 #define WX_MSCA                      0x11200
 #define WX_MSCA_RA(v)                FIELD_PREP(U16_MAX, v)
@@ -1027,6 +1038,11 @@ struct vf_data_storage {
 	bool link_enable;
 	bool trusted;
 	int xcast_mode;
+	unsigned int vf_api;
+	bool clear_to_send;
+	u16 pf_vlan; /* When set, guest VLAN config not allowed. */
+	u16 pf_qos;
+	bool pf_set_mac;
 
 	u16 vf_mc_hashes[WX_MAX_VF_MC_ENTRIES];
 	u16 num_vf_mc_hashes;
@@ -1133,6 +1149,7 @@ struct wx {
 	u32 wol;
 
 	u16 bd_number;
+	bool default_up;
 
 	struct wx_hw_stats stats;
 	u64 tx_busy;
-- 
2.43.2

Re: [PATCH net-next v3 4/6] net: libwx: Add msg task func

[Simon Horman]

On Wed, May 15, 2024 at 05:50:07PM +0800, Mengyuan Lou wrote:
> Implement wx_msg_task which is used to process mailbox
> messages sent by vf.
> 
> Signed-off-by: Mengyuan Lou <mengyuanlou@net-swift.com>

...

> diff --git a/drivers/net/ethernet/wangxun/libwx/wx_sriov.c b/drivers/net/ethernet/wangxun/libwx/wx_sriov.c

...

> +static inline void wx_ping_vf(struct wx *wx, int vf)
> +{
> +	u32 ping;
> +
> +	ping = WX_PF_CONTROL_MSG;
> +	if (wx->vfinfo[vf].clear_to_send)
> +		ping |= WX_VT_MSGTYPE_CTS;
> +	wx_write_mbx_pf(wx, &ping, 1, vf);
> +}

Please avoid using the static keyword for functions in .c files,
unless there is a demonstrable reason to do so. Generally the
compiler can figure out when best to inline functions.

Also, wx_ping_vf does not seem to be used until PATCH 6/6.
If so, it would be best to add it as part of that patch.

> +
> +/**
> + * wx_set_vf_rx_tx - Set VF rx tx
> + * @wx: Pointer to wx struct
> + * @vf: VF identifier
> + *
> + * Set or reset correct transmit and receive for vf
> + **/

...

[PATCH net-next v3 5/6] net: ngbe: add sriov function support

[Mengyuan Lou]

Add sriov_configure for driver ops.
Add mailbox handler wx_msg_task for ngbe in
the interrupt handler.
Add the notification flow when the vfs exist.

Signed-off-by: Mengyuan Lou <mengyuanlou@net-swift.com>
---
 drivers/net/ethernet/wangxun/libwx/wx_sriov.c | 36 ++++++++++++
 drivers/net/ethernet/wangxun/libwx/wx_sriov.h |  2 +
 drivers/net/ethernet/wangxun/libwx/wx_type.h  |  2 +
 drivers/net/ethernet/wangxun/ngbe/ngbe_main.c | 58 +++++++++++++++++--
 drivers/net/ethernet/wangxun/ngbe/ngbe_mdio.c | 10 ++++
 drivers/net/ethernet/wangxun/ngbe/ngbe_type.h |  2 +
 6 files changed, 106 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/wangxun/libwx/wx_sriov.c b/drivers/net/ethernet/wangxun/libwx/wx_sriov.c
index 8ed72750e5a0..be1426c6407f 100644
--- a/drivers/net/ethernet/wangxun/libwx/wx_sriov.c
+++ b/drivers/net/ethernet/wangxun/libwx/wx_sriov.c
@@ -968,3 +968,39 @@ void wx_msg_task(struct wx *wx)
 	}
 }
 EXPORT_SYMBOL(wx_msg_task);
+
+/**
+ * wx_disable_vf_rx_tx - Set VF rx tx
+ * @wx: Pointer to wx struct
+ *
+ * Set or reset correct transmit and receive for vf
+ **/
+void wx_disable_vf_rx_tx(struct wx *wx)
+{
+	wr32(wx, WX_TDM_VFTE_CLR(0), 0);
+	wr32(wx, WX_RDM_VFRE_CLR(0), 0);
+	if (wx->mac.type == wx_mac_sp) {
+		wr32(wx, WX_TDM_VFTE_CLR(1), 0);
+		wr32(wx, WX_RDM_VFRE_CLR(1), 0);
+	}
+}
+EXPORT_SYMBOL(wx_disable_vf_rx_tx);
+
+void wx_ping_all_vfs_with_link_status(struct wx *wx, bool link_up)
+{
+	u32 msgbuf[2] = {0, 0};
+	u16 i;
+
+	if (!wx->num_vfs)
+		return;
+	msgbuf[0] = WX_PF_NOFITY_VF_LINK_STATUS | WX_PF_CONTROL_MSG;
+	if (link_up)
+		msgbuf[1] = (wx->speed << 1) | link_up;
+	if (wx->vfinfo[i].clear_to_send)
+		msgbuf[0] |= WX_VT_MSGTYPE_CTS;
+	if (wx->notify_not_runnning)
+		msgbuf[1] |= WX_PF_NOFITY_VF_NET_NOT_RUNNING;
+	for (i = 0 ; i < wx->num_vfs; i++)
+		wx_write_mbx_pf(wx, msgbuf, 2, i);
+}
+EXPORT_SYMBOL(wx_ping_all_vfs_with_link_status);
diff --git a/drivers/net/ethernet/wangxun/libwx/wx_sriov.h b/drivers/net/ethernet/wangxun/libwx/wx_sriov.h
index f311774a2a18..7e45b3f71a7b 100644
--- a/drivers/net/ethernet/wangxun/libwx/wx_sriov.h
+++ b/drivers/net/ethernet/wangxun/libwx/wx_sriov.h
@@ -7,5 +7,7 @@
 int wx_disable_sriov(struct wx *wx);
 int wx_pci_sriov_configure(struct pci_dev *pdev, int num_vfs);
 void wx_msg_task(struct wx *wx);
+void wx_disable_vf_rx_tx(struct wx *wx);
+void wx_ping_all_vfs_with_link_status(struct wx *wx, bool link_up);
 
 #endif /* _WX_SRIOV_H_ */
diff --git a/drivers/net/ethernet/wangxun/libwx/wx_type.h b/drivers/net/ethernet/wangxun/libwx/wx_type.h
index 28dd879060fd..2f4dc535d720 100644
--- a/drivers/net/ethernet/wangxun/libwx/wx_type.h
+++ b/drivers/net/ethernet/wangxun/libwx/wx_type.h
@@ -87,6 +87,7 @@
 /************************* Port Registers ************************************/
 /* port cfg Registers */
 #define WX_CFG_PORT_CTL              0x14400
+#define WX_CFG_PORT_CTL_PFRSTD       BIT(14)
 #define WX_CFG_PORT_CTL_DRV_LOAD     BIT(3)
 #define WX_CFG_PORT_CTL_QINQ         BIT(2)
 #define WX_CFG_PORT_CTL_D_VLAN       BIT(0) /* double vlan*/
@@ -1096,6 +1097,7 @@ struct wx {
 	enum wx_reset_type reset_type;
 
 	/* PHY stuff */
+	bool notify_not_runnning;
 	unsigned int link;
 	int speed;
 	int duplex;
diff --git a/drivers/net/ethernet/wangxun/ngbe/ngbe_main.c b/drivers/net/ethernet/wangxun/ngbe/ngbe_main.c
index fdd6b4f70b7a..e67903c0c893 100644
--- a/drivers/net/ethernet/wangxun/ngbe/ngbe_main.c
+++ b/drivers/net/ethernet/wangxun/ngbe/ngbe_main.c
@@ -14,6 +14,8 @@
 #include "../libwx/wx_type.h"
 #include "../libwx/wx_hw.h"
 #include "../libwx/wx_lib.h"
+#include "../libwx/wx_mbx.h"
+#include "../libwx/wx_sriov.h"
 #include "ngbe_type.h"
 #include "ngbe_mdio.h"
 #include "ngbe_hw.h"
@@ -128,6 +130,10 @@ static int ngbe_sw_init(struct wx *wx)
 	wx->tx_work_limit = NGBE_DEFAULT_TX_WORK;
 	wx->rx_work_limit = NGBE_DEFAULT_RX_WORK;
 
+	wx->mbx.size = WX_VXMAILBOX_SIZE;
+	wx->setup_tc = ngbe_setup_tc;
+	set_bit(0, &wx->fwd_bitmask);
+
 	return 0;
 }
 
@@ -197,11 +203,25 @@ static irqreturn_t ngbe_intr(int __always_unused irq, void *data)
 
 static irqreturn_t ngbe_msix_other(int __always_unused irq, void *data)
 {
-	struct wx *wx = data;
+	struct wx_q_vector *q_vector;
+	struct wx *wx  = data;
+	u32 eicr;
 
-	/* re-enable the original interrupt state, no lsc, no queues */
-	if (netif_running(wx->netdev))
-		ngbe_irq_enable(wx, false);
+	q_vector = wx->q_vector[0];
+
+	eicr = wx_misc_isb(wx, WX_ISB_MISC);
+
+	if (eicr & NGBE_PX_MISC_IC_VF_MBOX)
+		wx_msg_task(wx);
+
+	if (wx->num_vfs == 7) {
+		napi_schedule_irqoff(&q_vector->napi);
+		ngbe_irq_enable(wx, true);
+	} else {
+		/* re-enable the original interrupt state, no lsc, no queues */
+		if (netif_running(wx->netdev))
+			ngbe_irq_enable(wx, false);
+	}
 
 	return IRQ_HANDLED;
 }
@@ -291,6 +311,22 @@ static void ngbe_disable_device(struct wx *wx)
 	struct net_device *netdev = wx->netdev;
 	u32 i;
 
+	if (wx->num_vfs) {
+		/* Clear EITR Select mapping */
+		wr32(wx, WX_PX_ITRSEL, 0);
+
+		/* Mark all the VFs as inactive */
+		for (i = 0 ; i < wx->num_vfs; i++)
+			wx->vfinfo[i].clear_to_send = 0;
+		wx->notify_not_runnning = true;
+		/* ping all the active vfs to let them know we are going down */
+		wx_ping_all_vfs_with_link_status(wx, false);
+		wx->notify_not_runnning = false;
+
+		/* Disable all VFTE/VFRE TX/RX */
+		wx_disable_vf_rx_tx(wx);
+	}
+
 	/* disable all enabled rx queues */
 	for (i = 0; i < wx->num_rx_queues; i++)
 		/* this call also flushes the previous write */
@@ -313,10 +349,17 @@ static void ngbe_disable_device(struct wx *wx)
 	wx_update_stats(wx);
 }
 
+static void ngbe_reset(struct wx *wx)
+{
+	wx_flush_sw_mac_table(wx);
+	wx_mac_set_default_filter(wx, wx->mac.addr);
+}
+
 void ngbe_down(struct wx *wx)
 {
 	phylink_stop(wx->phylink);
 	ngbe_disable_device(wx);
+	ngbe_reset(wx);
 	wx_clean_all_tx_rings(wx);
 	wx_clean_all_rx_rings(wx);
 }
@@ -339,6 +382,11 @@ void ngbe_up(struct wx *wx)
 		ngbe_sfp_modules_txrx_powerctl(wx, true);
 
 	phylink_start(wx->phylink);
+	/* Set PF Reset Done bit so PF/VF Mail Ops can work */
+	wr32m(wx, WX_CFG_PORT_CTL,
+	      WX_CFG_PORT_CTL_PFRSTD, WX_CFG_PORT_CTL_PFRSTD);
+	if (wx->num_vfs)
+		wx_ping_all_vfs_with_link_status(wx, false);
 }
 
 /**
@@ -722,6 +770,7 @@ static void ngbe_remove(struct pci_dev *pdev)
 	struct net_device *netdev;
 
 	netdev = wx->netdev;
+	wx_disable_sriov(wx);
 	unregister_netdev(netdev);
 	phylink_destroy(wx->phylink);
 	pci_release_selected_regions(pdev,
@@ -781,6 +830,7 @@ static struct pci_driver ngbe_driver = {
 	.suspend  = ngbe_suspend,
 	.resume   = ngbe_resume,
 	.shutdown = ngbe_shutdown,
+	.sriov_configure = wx_pci_sriov_configure,
 };
 
 module_pci_driver(ngbe_driver);
diff --git a/drivers/net/ethernet/wangxun/ngbe/ngbe_mdio.c b/drivers/net/ethernet/wangxun/ngbe/ngbe_mdio.c
index ec54b18c5fe7..dd01aec87b02 100644
--- a/drivers/net/ethernet/wangxun/ngbe/ngbe_mdio.c
+++ b/drivers/net/ethernet/wangxun/ngbe/ngbe_mdio.c
@@ -8,6 +8,7 @@
 
 #include "../libwx/wx_type.h"
 #include "../libwx/wx_hw.h"
+#include "../libwx/wx_sriov.h"
 #include "ngbe_type.h"
 #include "ngbe_mdio.h"
 
@@ -64,6 +65,11 @@ static void ngbe_mac_config(struct phylink_config *config, unsigned int mode,
 static void ngbe_mac_link_down(struct phylink_config *config,
 			       unsigned int mode, phy_interface_t interface)
 {
+	struct wx *wx = phylink_to_wx(config);
+
+	wx->speed = 0;
+	/* ping all the active vfs to let them know we are going down */
+	wx_ping_all_vfs_with_link_status(wx, false);
 }
 
 static void ngbe_mac_link_up(struct phylink_config *config,
@@ -103,6 +109,10 @@ static void ngbe_mac_link_up(struct phylink_config *config,
 	wr32(wx, WX_MAC_PKT_FLT, WX_MAC_PKT_FLT_PR);
 	reg = rd32(wx, WX_MAC_WDG_TIMEOUT);
 	wr32(wx, WX_MAC_WDG_TIMEOUT, reg);
+
+	wx->speed = speed;
+	/* ping all the active vfs to let them know we are going up */
+	wx_ping_all_vfs_with_link_status(wx, true);
 }
 
 static const struct phylink_mac_ops ngbe_mac_ops = {
diff --git a/drivers/net/ethernet/wangxun/ngbe/ngbe_type.h b/drivers/net/ethernet/wangxun/ngbe/ngbe_type.h
index f48ed7fc1805..bb70af035c39 100644
--- a/drivers/net/ethernet/wangxun/ngbe/ngbe_type.h
+++ b/drivers/net/ethernet/wangxun/ngbe/ngbe_type.h
@@ -72,11 +72,13 @@
 #define NGBE_PX_MISC_IEN_DEV_RST		BIT(10)
 #define NGBE_PX_MISC_IEN_ETH_LK			BIT(18)
 #define NGBE_PX_MISC_IEN_INT_ERR		BIT(20)
+#define NGBE_PX_MISC_IC_VF_MBOX			BIT(23)
 #define NGBE_PX_MISC_IEN_GPIO			BIT(26)
 #define NGBE_PX_MISC_IEN_MASK ( \
 				NGBE_PX_MISC_IEN_DEV_RST | \
 				NGBE_PX_MISC_IEN_ETH_LK | \
 				NGBE_PX_MISC_IEN_INT_ERR | \
+				NGBE_PX_MISC_IC_VF_MBOX | \
 				NGBE_PX_MISC_IEN_GPIO)
 
 #define NGBE_INTR_ALL				0x1FF
-- 
2.43.2

Re: [PATCH net-next v3 5/6] net: ngbe: add sriov function support

[Simon Horman]

On Wed, May 15, 2024 at 05:50:08PM +0800, Mengyuan Lou wrote:
> Add sriov_configure for driver ops.
> Add mailbox handler wx_msg_task for ngbe in
> the interrupt handler.
> Add the notification flow when the vfs exist.
> 
> Signed-off-by: Mengyuan Lou <mengyuanlou@net-swift.com>

...

> +void wx_ping_all_vfs_with_link_status(struct wx *wx, bool link_up)
> +{
> +	u32 msgbuf[2] = {0, 0};
> +	u16 i;
> +
> +	if (!wx->num_vfs)
> +		return;
> +	msgbuf[0] = WX_PF_NOFITY_VF_LINK_STATUS | WX_PF_CONTROL_MSG;
> +	if (link_up)
> +		msgbuf[1] = (wx->speed << 1) | link_up;
> +	if (wx->vfinfo[i].clear_to_send)

Hi Mengyuan Lou,

i appears to be used uninitialised here.

Flagged by clang-18 W=1, and Smatch.

> +		msgbuf[0] |= WX_VT_MSGTYPE_CTS;
> +	if (wx->notify_not_runnning)
> +		msgbuf[1] |= WX_PF_NOFITY_VF_NET_NOT_RUNNING;
> +	for (i = 0 ; i < wx->num_vfs; i++)
> +		wx_write_mbx_pf(wx, msgbuf, 2, i);
> +}
> +EXPORT_SYMBOL(wx_ping_all_vfs_with_link_status);

...

-- 
pw-bot: changes-requested

Re: [PATCH net-next v3 5/6] net: ngbe: add sriov function support

[kernel test robot]

Hi Mengyuan,

kernel test robot noticed the following build warnings:

[auto build test WARNING on net-next/main]

url:    https://github.com/intel-lab-lkp/linux/commits/Mengyuan-Lou/net-libwx-Add-sriov-api-for-wangxun-nics/20240515-185015
base:   net-next/main
patch link:    https://lore.kernel.org/r/15515521993762EE%2B20240515100830.32920-6-mengyuanlou%40net-swift.com
patch subject: [PATCH net-next v3 5/6] net: ngbe: add sriov function support
config: x86_64-allyesconfig (https://download.01.org/0day-ci/archive/20240516/202405160844.t8jS88dy-lkp@intel.com/config)
compiler: clang version 18.1.5 (https://github.com/llvm/llvm-project 617a15a9eac96088ae5e9134248d8236e34b91b1)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240516/202405160844.t8jS88dy-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202405160844.t8jS88dy-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/net/ethernet/wangxun/libwx/wx_sriov.c:999:17: warning: variable 'i' is uninitialized when used here [-Wuninitialized]
     999 |         if (wx->vfinfo[i].clear_to_send)
         |                        ^
   drivers/net/ethernet/wangxun/libwx/wx_sriov.c:992:7: note: initialize the variable 'i' to silence this warning
     992 |         u16 i;
         |              ^
         |               = 0
   drivers/net/ethernet/wangxun/libwx/wx_sriov.c:312:20: warning: unused function 'wx_ping_vf' [-Wunused-function]
     312 | static inline void wx_ping_vf(struct wx *wx, int vf)
         |                    ^~~~~~~~~~
   2 warnings generated.


vim +/i +999 drivers/net/ethernet/wangxun/libwx/wx_sriov.c

   988	
   989	void wx_ping_all_vfs_with_link_status(struct wx *wx, bool link_up)
   990	{
   991		u32 msgbuf[2] = {0, 0};
   992		u16 i;
   993	
   994		if (!wx->num_vfs)
   995			return;
   996		msgbuf[0] = WX_PF_NOFITY_VF_LINK_STATUS | WX_PF_CONTROL_MSG;
   997		if (link_up)
   998			msgbuf[1] = (wx->speed << 1) | link_up;
 > 999		if (wx->vfinfo[i].clear_to_send)

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki

[PATCH net-next v3 6/6] net: txgbe: add sriov function support

[Mengyuan Lou]

Add sriov_configure for driver ops.
Add ndo_vf_ops for txgbe netdev ops.
Add mailbox handler wx_msg_task for txgbe.

Signed-off-by: Mengyuan Lou <mengyuanlou@net-swift.com>
---
 drivers/net/ethernet/wangxun/libwx/wx_sriov.c | 47 +++++++++++++++++++
 drivers/net/ethernet/wangxun/libwx/wx_sriov.h |  1 +
 drivers/net/ethernet/wangxun/libwx/wx_type.h  |  1 +
 .../net/ethernet/wangxun/txgbe/txgbe_irq.c    | 25 ++++++++--
 .../net/ethernet/wangxun/txgbe/txgbe_main.c   | 24 ++++++++++
 .../net/ethernet/wangxun/txgbe/txgbe_phy.c    |  8 ++++
 .../net/ethernet/wangxun/txgbe/txgbe_type.h   |  4 +-
 7 files changed, 106 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/wangxun/libwx/wx_sriov.c b/drivers/net/ethernet/wangxun/libwx/wx_sriov.c
index be1426c6407f..8f7a39d5cc54 100644
--- a/drivers/net/ethernet/wangxun/libwx/wx_sriov.c
+++ b/drivers/net/ethernet/wangxun/libwx/wx_sriov.c
@@ -1004,3 +1004,50 @@ void wx_ping_all_vfs_with_link_status(struct wx *wx, bool link_up)
 		wx_write_mbx_pf(wx, msgbuf, 2, i);
 }
 EXPORT_SYMBOL(wx_ping_all_vfs_with_link_status);
+
+/**
+ * wx_set_vf_link_state - Set link state
+ * @wx: Pointer to adapter struct
+ * @vf: VF identifier
+ * @state: required link state
+ *
+ * Set a link force state on/off a single vf
+ **/
+static void wx_set_vf_link_state(struct wx *wx, int vf, int state)
+{
+	wx->vfinfo[vf].link_state = state;
+	switch (state) {
+	case IFLA_VF_LINK_STATE_AUTO:
+		if (netif_running(wx->netdev))
+			wx->vfinfo[vf].link_enable = true;
+		else
+			wx->vfinfo[vf].link_enable = false;
+		break;
+	case IFLA_VF_LINK_STATE_ENABLE:
+		wx->vfinfo[vf].link_enable = true;
+		break;
+	case IFLA_VF_LINK_STATE_DISABLE:
+		wx->vfinfo[vf].link_enable = false;
+		break;
+	}
+	/* restart the VF */
+	wx->vfinfo[vf].clear_to_send = false;
+	wx_ping_vf(wx, vf);
+
+	wx_set_vf_rx_tx(wx, vf);
+}
+
+/**
+ * wx_set_all_vfs - update vfs queues
+ * @wx: Pointer to wx struct
+ *
+ * Update setting transmit and receive queues for all vfs
+ **/
+void wx_set_all_vfs(struct wx *wx)
+{
+	int i;
+
+	for (i = 0 ; i < wx->num_vfs; i++)
+		wx_set_vf_link_state(wx, i, wx->vfinfo[i].link_state);
+}
+EXPORT_SYMBOL(wx_set_all_vfs);
diff --git a/drivers/net/ethernet/wangxun/libwx/wx_sriov.h b/drivers/net/ethernet/wangxun/libwx/wx_sriov.h
index 7e45b3f71a7b..122d9c561ff5 100644
--- a/drivers/net/ethernet/wangxun/libwx/wx_sriov.h
+++ b/drivers/net/ethernet/wangxun/libwx/wx_sriov.h
@@ -9,5 +9,6 @@ int wx_pci_sriov_configure(struct pci_dev *pdev, int num_vfs);
 void wx_msg_task(struct wx *wx);
 void wx_disable_vf_rx_tx(struct wx *wx);
 void wx_ping_all_vfs_with_link_status(struct wx *wx, bool link_up);
+void wx_set_all_vfs(struct wx *wx);
 
 #endif /* _WX_SRIOV_H_ */
diff --git a/drivers/net/ethernet/wangxun/libwx/wx_type.h b/drivers/net/ethernet/wangxun/libwx/wx_type.h
index 2f4dc535d720..31c5e0a86a28 100644
--- a/drivers/net/ethernet/wangxun/libwx/wx_type.h
+++ b/drivers/net/ethernet/wangxun/libwx/wx_type.h
@@ -1048,6 +1048,7 @@ struct vf_data_storage {
 	u16 vf_mc_hashes[WX_MAX_VF_MC_ENTRIES];
 	u16 num_vf_mc_hashes;
 	u16 vlan_count;
+	int link_state;
 };
 
 struct vf_macvlans {
diff --git a/drivers/net/ethernet/wangxun/txgbe/txgbe_irq.c b/drivers/net/ethernet/wangxun/txgbe/txgbe_irq.c
index b3e3605d1edb..e6be98865c2d 100644
--- a/drivers/net/ethernet/wangxun/txgbe/txgbe_irq.c
+++ b/drivers/net/ethernet/wangxun/txgbe/txgbe_irq.c
@@ -7,6 +7,7 @@
 #include "../libwx/wx_type.h"
 #include "../libwx/wx_lib.h"
 #include "../libwx/wx_hw.h"
+#include "../libwx/wx_sriov.h"
 #include "txgbe_type.h"
 #include "txgbe_phy.h"
 #include "txgbe_irq.h"
@@ -176,6 +177,24 @@ static const struct irq_domain_ops txgbe_misc_irq_domain_ops = {
 	.map = txgbe_misc_irq_domain_map,
 };
 
+static irqreturn_t txgbe_irq_handler(int irq, void *data)
+{
+	struct txgbe *txgbe = data;
+	struct wx *wx = txgbe->wx;
+	u32 eicr;
+
+	eicr = wx_misc_isb(wx, WX_ISB_MISC) & TXGBE_PX_MISC_IEN_MASK;
+	if (!eicr)
+		return IRQ_NONE;
+	txgbe->eicr = eicr;
+	if (eicr & TXGBE_PX_MISC_IC_VF_MBOX) {
+		wx_msg_task(txgbe->wx);
+		wx_intr_enable(wx, TXGBE_INTR_MISC);
+	}
+
+	return IRQ_WAKE_THREAD;
+}
+
 static irqreturn_t txgbe_misc_irq_handle(int irq, void *data)
 {
 	struct txgbe *txgbe = data;
@@ -184,7 +203,7 @@ static irqreturn_t txgbe_misc_irq_handle(int irq, void *data)
 	unsigned int sub_irq;
 	u32 eicr;
 
-	eicr = wx_misc_isb(wx, WX_ISB_MISC);
+	eicr = txgbe->eicr;
 	if (eicr & TXGBE_PX_MISC_GPIO) {
 		sub_irq = irq_find_mapping(txgbe->misc.domain, TXGBE_IRQ_GPIO);
 		handle_nested_irq(sub_irq);
@@ -226,7 +245,7 @@ int txgbe_setup_misc_irq(struct txgbe *txgbe)
 	struct wx *wx = txgbe->wx;
 	int hwirq, err;
 
-	txgbe->misc.nirqs = 2;
+	txgbe->misc.nirqs = TXGBE_IRQ_MAX;
 	txgbe->misc.domain = irq_domain_add_simple(NULL, txgbe->misc.nirqs, 0,
 						   &txgbe_misc_irq_domain_ops, txgbe);
 	if (!txgbe->misc.domain)
@@ -241,7 +260,7 @@ int txgbe_setup_misc_irq(struct txgbe *txgbe)
 	else
 		txgbe->misc.irq = wx->pdev->irq;
 
-	err = request_threaded_irq(txgbe->misc.irq, NULL,
+	err = request_threaded_irq(txgbe->misc.irq, txgbe_irq_handler,
 				   txgbe_misc_irq_handle,
 				   IRQF_ONESHOT,
 				   wx->netdev->name, txgbe);
diff --git a/drivers/net/ethernet/wangxun/txgbe/txgbe_main.c b/drivers/net/ethernet/wangxun/txgbe/txgbe_main.c
index bd4624d14ca0..022f3622f92b 100644
--- a/drivers/net/ethernet/wangxun/txgbe/txgbe_main.c
+++ b/drivers/net/ethernet/wangxun/txgbe/txgbe_main.c
@@ -14,6 +14,8 @@
 #include "../libwx/wx_type.h"
 #include "../libwx/wx_lib.h"
 #include "../libwx/wx_hw.h"
+#include "../libwx/wx_mbx.h"
+#include "../libwx/wx_sriov.h"
 #include "txgbe_type.h"
 #include "txgbe_hw.h"
 #include "txgbe_phy.h"
@@ -99,6 +101,12 @@ static void txgbe_up_complete(struct wx *wx)
 
 	/* enable transmits */
 	netif_tx_start_all_queues(netdev);
+
+	/* Set PF Reset Done bit so PF/VF Mail Ops can work */
+	wr32m(wx, WX_CFG_PORT_CTL, WX_CFG_PORT_CTL_PFRSTD,
+	      WX_CFG_PORT_CTL_PFRSTD);
+	/* update setting rx tx for all active vfs */
+	wx_set_all_vfs(wx);
 }
 
 static void txgbe_reset(struct wx *wx)
@@ -144,6 +152,16 @@ static void txgbe_disable_device(struct wx *wx)
 		wx_err(wx, "%s: invalid bus lan id %d\n",
 		       __func__, wx->bus.func);
 
+	if (wx->num_vfs) {
+		/* Clear EITR Select mapping */
+		wr32(wx, WX_PX_ITRSEL, 0);
+		/* Mark all the VFs as inactive */
+		for (i = 0 ; i < wx->num_vfs; i++)
+			wx->vfinfo[i].clear_to_send = 0;
+		/* update setting rx tx for all active vfs */
+		wx_set_all_vfs(wx);
+	}
+
 	if (!(((wx->subsystem_device_id & WX_NCSI_MASK) == WX_NCSI_SUP) ||
 	      ((wx->subsystem_device_id & WX_WOL_MASK) == WX_WOL_SUP))) {
 		/* disable mac transmiter */
@@ -269,6 +287,10 @@ static int txgbe_sw_init(struct wx *wx)
 	wx->tx_work_limit = TXGBE_DEFAULT_TX_WORK;
 	wx->rx_work_limit = TXGBE_DEFAULT_RX_WORK;
 
+	wx->mbx.size = WX_VXMAILBOX_SIZE;
+	wx->setup_tc = txgbe_setup_tc;
+	set_bit(0, &wx->fwd_bitmask);
+
 	return 0;
 }
 
@@ -694,6 +716,7 @@ static void txgbe_remove(struct pci_dev *pdev)
 	struct net_device *netdev;
 
 	netdev = wx->netdev;
+	wx_disable_sriov(wx);
 	unregister_netdev(netdev);
 
 	txgbe_remove_phy(txgbe);
@@ -715,6 +738,7 @@ static struct pci_driver txgbe_driver = {
 	.probe    = txgbe_probe,
 	.remove   = txgbe_remove,
 	.shutdown = txgbe_shutdown,
+	.sriov_configure = wx_pci_sriov_configure,
 };
 
 module_pci_driver(txgbe_driver);
diff --git a/drivers/net/ethernet/wangxun/txgbe/txgbe_phy.c b/drivers/net/ethernet/wangxun/txgbe/txgbe_phy.c
index 5f502265f0a6..76635d4366e4 100644
--- a/drivers/net/ethernet/wangxun/txgbe/txgbe_phy.c
+++ b/drivers/net/ethernet/wangxun/txgbe/txgbe_phy.c
@@ -16,6 +16,7 @@
 #include "../libwx/wx_type.h"
 #include "../libwx/wx_lib.h"
 #include "../libwx/wx_hw.h"
+#include "../libwx/wx_sriov.h"
 #include "txgbe_type.h"
 #include "txgbe_phy.h"
 #include "txgbe_hw.h"
@@ -179,6 +180,9 @@ static void txgbe_mac_link_down(struct phylink_config *config,
 	struct wx *wx = phylink_to_wx(config);
 
 	wr32m(wx, WX_MAC_TX_CFG, WX_MAC_TX_CFG_TE, 0);
+	wx->speed = 0;
+	/* ping all the active vfs to let them know we are going down */
+	wx_ping_all_vfs_with_link_status(wx, false);
 }
 
 static void txgbe_mac_link_up(struct phylink_config *config,
@@ -215,6 +219,10 @@ static void txgbe_mac_link_up(struct phylink_config *config,
 	wr32(wx, WX_MAC_PKT_FLT, WX_MAC_PKT_FLT_PR);
 	wdg = rd32(wx, WX_MAC_WDG_TIMEOUT);
 	wr32(wx, WX_MAC_WDG_TIMEOUT, wdg);
+
+	wx->speed = speed;
+	/* ping all the active vfs to let them know we are going up */
+	wx_ping_all_vfs_with_link_status(wx, true);
 }
 
 static int txgbe_mac_prepare(struct phylink_config *config, unsigned int mode,
diff --git a/drivers/net/ethernet/wangxun/txgbe/txgbe_type.h b/drivers/net/ethernet/wangxun/txgbe/txgbe_type.h
index 1b4ff50d5857..28717788c348 100644
--- a/drivers/net/ethernet/wangxun/txgbe/txgbe_type.h
+++ b/drivers/net/ethernet/wangxun/txgbe/txgbe_type.h
@@ -71,12 +71,13 @@
 #define TXGBE_PX_MISC_ETH_LK                    BIT(18)
 #define TXGBE_PX_MISC_ETH_AN                    BIT(19)
 #define TXGBE_PX_MISC_INT_ERR                   BIT(20)
+#define TXGBE_PX_MISC_IC_VF_MBOX                BIT(23)
 #define TXGBE_PX_MISC_GPIO                      BIT(26)
 #define TXGBE_PX_MISC_IEN_MASK                            \
 	(TXGBE_PX_MISC_ETH_LKDN | TXGBE_PX_MISC_DEV_RST | \
 	 TXGBE_PX_MISC_ETH_EVENT | TXGBE_PX_MISC_ETH_LK | \
 	 TXGBE_PX_MISC_ETH_AN | TXGBE_PX_MISC_INT_ERR |   \
-	 TXGBE_PX_MISC_GPIO)
+	 TXGBE_PX_MISC_IC_VF_MBOX | TXGBE_PX_MISC_GPIO)
 
 /* Port cfg registers */
 #define TXGBE_CFG_PORT_ST                       0x14404
@@ -195,6 +196,7 @@ struct txgbe {
 	struct gpio_chip *gpio;
 	unsigned int gpio_irq;
 	unsigned int link_irq;
+	u32 eicr;
 };
 
 #endif /* _TXGBE_TYPE_H_ */
-- 
2.43.2

[PATCH net-next v3 1/6] net: libwx: Add malibox api for wangxun pf drivers

[Mengyuan Lou]

Implements the mailbox interfaces for wangxun pf drivers
ngbe and txgbe.

Signed-off-by: Mengyuan Lou <mengyuanlou@net-swift.com>
---
 drivers/net/ethernet/wangxun/libwx/Makefile  |   2 +-
 drivers/net/ethernet/wangxun/libwx/wx_mbx.c  | 191 +++++++++++++++++++
 drivers/net/ethernet/wangxun/libwx/wx_mbx.h  |  32 ++++
 drivers/net/ethernet/wangxun/libwx/wx_type.h |   5 +
 4 files changed, 229 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 42ccd6e4052e..913a978c9032 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
+libwx-objs := wx_hw.o wx_lib.o wx_ethtool.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..26842043630b
--- /dev/null
+++ b/drivers/net/ethernet/wangxun/libwx/wx_mbx.c
@@ -0,0 +1,191 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2015 - 2024 Beijing WangXun Technology Co., Ltd. */
+#include <linux/pci.h>
+#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 SUCCESS if we obtained the mailbox lock
+ **/
+static int wx_obtain_mbx_lock_pf(struct wx *wx, u16 vf)
+{
+	int ret = -EBUSY;
+	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) {
+			ret = 0;
+			break;
+		}
+		udelay(10);
+	}
+
+	if (ret)
+		wx_err(wx, "Failed to obtain mailbox lock for PF%d", vf);
+
+	return ret;
+}
+
+static int wx_check_for_bit_pf(struct wx *wx, u32 mask, int index)
+{
+	u32 mbvficr = rd32(wx, WX_MBVFICR(index));
+	int ret = -EBUSY;
+
+	if (mbvficr & mask) {
+		ret = 0;
+		wr32(wx, WX_MBVFICR(index), mask);
+	}
+
+	return ret;
+}
+
+/**
+ *  wx_check_for_ack_pf - checks to see if the VF has ACKed
+ *  @wx: pointer to the HW structure
+ *  @vf: the VF index
+ *
+ *  returns SUCCESS if the VF has set the Status bit or else ERR_MBX
+ **/
+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);
+}
+EXPORT_SYMBOL(wx_check_for_ack_pf);
+
+/**
+ *  wx_check_for_msg_pf - checks to see if the VF has sent mail
+ *  @wx: pointer to the HW structure
+ *  @vf: the VF index
+ *
+ *  returns SUCCESS if the VF has set the Status bit or else ERR_MBX
+ **/
+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);
+}
+EXPORT_SYMBOL(wx_check_for_msg_pf);
+
+/**
+ *  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
+ *
+ *  returns SUCCESS if it successfully copied message into the buffer
+ **/
+int wx_write_mbx_pf(struct wx *wx, u32 *msg, u16 size, u16 vf)
+{
+	struct wx_mbx_info *mbx = &wx->mbx;
+	int ret, i;
+
+	if (size > mbx->size) {
+		wx_err(wx, "Invalid mailbox message size %d", size);
+		ret = -EINVAL;
+		goto out_no_write;
+	}
+
+	/* lock the mailbox to prevent pf/vf race condition */
+	ret = wx_obtain_mbx_lock_pf(wx, vf);
+	if (ret)
+		goto out_no_write;
+
+	/* 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);
+
+out_no_write:
+	return ret;
+}
+EXPORT_SYMBOL(wx_write_mbx_pf);
+
+/**
+ *  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
+ *
+ *  This function copies a message from the mailbox buffer to the caller's
+ *  memory buffer.  The presumption is that the caller knows that there was
+ *  a message due to a VF request so no polling for message is needed.
+ **/
+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 */
+	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)
+		goto out_no_read;
+
+	/* copy the message to the mailbox memory buffer */
+	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);
+out_no_read:
+	return ret;
+}
+EXPORT_SYMBOL(wx_read_mbx_pf);
+
+/**
+ *  wx_check_for_rst_pf - checks to see if the VF has reset
+ *  @wx: pointer to the HW structure
+ *  @vf: the VF index
+ *
+ *  returns SUCCESS if the VF has set the Status bit or else ERR_MBX
+ **/
+int wx_check_for_rst_pf(struct wx *wx, u16 vf)
+{
+	u32 reg_offset = vf / 32;
+	u32 vf_shift = vf % 32;
+	int ret = -EBUSY;
+	u32 vflre = 0;
+
+	vflre = rd32(wx, WX_VFLRE(reg_offset));
+
+	if (vflre & BIT(vf_shift)) {
+		ret = 0;
+		wr32(wx, WX_VFLREC(reg_offset), BIT(vf_shift));
+	}
+
+	return ret;
+}
+EXPORT_SYMBOL(wx_check_for_rst_pf);
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..1579096fb6ad
--- /dev/null
+++ b/drivers/net/ethernet/wangxun/libwx/wx_mbx.h
@@ -0,0 +1,32 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (c) 2015 - 2024 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 1fdeb464d5f4..f29ac955dc83 100644
--- a/drivers/net/ethernet/wangxun/libwx/wx_type.h
+++ b/drivers/net/ethernet/wangxun/libwx/wx_type.h
@@ -674,6 +674,10 @@ struct wx_bus_info {
 	u16 device;
 };
 
+struct wx_mbx_info {
+	u16 size;
+};
+
 struct wx_thermal_sensor_data {
 	s16 temp;
 	s16 alarm_thresh;
@@ -990,6 +994,7 @@ 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;
-- 
2.43.2