qlcnic: VF-PF communication channel implementation

o Adapter provides communication channel between VF and PF.
  Any control commands from the VF driver are sent to the PF driver
  through this communication channel. PF driver validates the
  commands before sending them to the adapter. Similarly PF driver
  forwards any control command responses  to the VF driver
  through this communication channel.  Adapter sends message pending
  event to VF or PF when there is an outstanding response or a command
  for VF or PF respectively. When a command or a response is sent over
  a channel VF or PF cannot send another command or a response
  until adapter sends a channel free event. Adapter allocates 1K area to
  VF and  PF each for this communication.
o Commands and  responses are encapsulated in a header. Header determines
  sequence id, number of fragments, fragment number etc.
Signed-off-by: NManish Chopra <manish.chopra@qlogic.com>
Signed-off-by: NSucheta Chakraborty <sucheta.chakraborty@qlogic.com>
Signed-off-by: NRajesh Borundia <rajesh.borundia@qlogic.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/qlogic/qlcnic/qlcnic.h

@@ -1360,6 +1360,7 @@ struct _cdrp_cmd {
 struct qlcnic_cmd_args {
 	struct _cdrp_cmd req;
 	struct _cdrp_cmd rsp;
+	int op_type;
 };
 
 int qlcnic_fw_cmd_get_minidump_temp(struct qlcnic_adapter *adapter);

drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.c

@@ -14,6 +14,7 @@
 
 #define QLCNIC_MAX_TX_QUEUES		1
 #define RSS_HASHTYPE_IP_TCP		0x3
+#define QLC_83XX_FW_MBX_CMD		0
 
 /* status descriptor mailbox data
  * @phy_addr_{low|high}: physical address of buffer
@@ -211,6 +212,7 @@ static const struct qlcnic_mailbox_metadata qlcnic_83xx_mbx_tbl[] = {
 	{QLCNIC_CMD_GET_LED_CONFIG, 1, 5},
 	{QLCNIC_CMD_ADD_RCV_RINGS, 130, 26},
 	{QLCNIC_CMD_CONFIG_VPORT, 4, 4},
+	{QLCNIC_CMD_BC_EVENT_SETUP, 2, 1},
 };
 
 const u32 qlcnic_83xx_ext_reg_tbl[] = {
@@ -824,7 +826,7 @@ static void qlcnic_dump_mbx(struct qlcnic_adapter *adapter,
 }
 
 /* Mailbox response for mac rcode */
-static u32 qlcnic_83xx_mac_rcode(struct qlcnic_adapter *adapter)
+u32 qlcnic_83xx_mac_rcode(struct qlcnic_adapter *adapter)
 {
 	u32 fw_data;
 	u8 mac_cmd_rcode;
@@ -838,7 +840,7 @@ static u32 qlcnic_83xx_mac_rcode(struct qlcnic_adapter *adapter)
 	return 1;
 }
 
-static u32 qlcnic_83xx_mbx_poll(struct qlcnic_adapter *adapter)
+u32 qlcnic_83xx_mbx_poll(struct qlcnic_adapter *adapter)
 {
 	u32 data;
 	unsigned long wait_time = 0;
@@ -953,6 +955,7 @@ int qlcnic_83xx_alloc_mbx_args(struct qlcnic_cmd_args *mbx,
 	size = ARRAY_SIZE(qlcnic_83xx_mbx_tbl);
 	for (i = 0; i < size; i++) {
 		if (type == mbx_tbl[i].cmd) {
+			mbx->op_type = QLC_83XX_FW_MBX_CMD;
 			mbx->req.num = mbx_tbl[i].in_args;
 			mbx->rsp.num = mbx_tbl[i].out_args;
 			mbx->req.arg = kcalloc(mbx->req.num, sizeof(u32),
@@ -970,10 +973,10 @@ int qlcnic_83xx_alloc_mbx_args(struct qlcnic_cmd_args *mbx,
 			memset(mbx->rsp.arg, 0, sizeof(u32) * mbx->rsp.num);
 			temp = adapter->ahw->fw_hal_version << 29;
 			mbx->req.arg[0] = (type | (mbx->req.num << 16) | temp);
-			break;
+			return 0;
 		}
 	}
-	return 0;
+	return -EINVAL;
 }
 
 void qlcnic_83xx_idc_aen_work(struct work_struct *work)
@@ -1029,6 +1032,9 @@ void qlcnic_83xx_process_aen(struct qlcnic_adapter *adapter)
 		break;
 	case QLCNIC_MBX_TIME_EXTEND_EVENT:
 		break;
+	case QLCNIC_MBX_BC_EVENT:
+		qlcnic_sriov_handle_bc_event(adapter, event[1]);
+		break;
 	case QLCNIC_MBX_SFP_INSERT_EVENT:
 		dev_info(&adapter->pdev->dev, "SFP+ Insert AEN:0x%x.\n",
 			 QLCNIC_MBX_RSP(event[0]));

drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.h

@@ -456,4 +456,6 @@ int qlcnic_83xx_set_led(struct net_device *, enum ethtool_phys_id_state);
 int qlcnic_83xx_flash_test(struct qlcnic_adapter *);
 int qlcnic_83xx_enable_flash_write(struct qlcnic_adapter *);
 int qlcnic_83xx_disable_flash_write(struct qlcnic_adapter *);
+u32 qlcnic_83xx_mac_rcode(struct qlcnic_adapter *);
+u32 qlcnic_83xx_mbx_poll(struct qlcnic_adapter *);
 #endif

drivers/net/ethernet/qlogic/qlcnic/qlcnic_hw.h

@@ -83,6 +83,7 @@ enum qlcnic_regs {
 #define QLCNIC_CMD_CONFIG_PORT			0x2e
 #define QLCNIC_CMD_TEMP_SIZE			0x2f
 #define QLCNIC_CMD_GET_TEMP_HDR			0x30
+#define QLCNIC_CMD_BC_EVENT_SETUP		0x31
 #define	QLCNIC_CMD_CONFIG_VPORT			0x32
 #define QLCNIC_CMD_GET_MAC_STATS		0x37
 #define QLCNIC_CMD_SET_DRV_VER			0x38
@@ -115,6 +116,7 @@ enum qlcnic_regs {
 #define QLCNIC_SET_FAC_DEF_MAC			5
 
 #define QLCNIC_MBX_LINK_EVENT		0x8001
+#define QLCNIC_MBX_BC_EVENT		0x8002
 #define QLCNIC_MBX_COMP_EVENT		0x8100
 #define QLCNIC_MBX_REQUEST_EVENT	0x8101
 #define QLCNIC_MBX_TIME_EXTEND_EVENT	0x8102

drivers/net/ethernet/qlogic/qlcnic/qlcnic_sriov.h

@@ -15,6 +15,84 @@
 extern const u32 qlcnic_83xx_reg_tbl[];
 extern const u32 qlcnic_83xx_ext_reg_tbl[];
 
+struct qlcnic_bc_payload {
+	u64 payload[126];
+};
+
+struct qlcnic_bc_hdr {
+#if defined(__LITTLE_ENDIAN)
+	u8	version;
+	u8	msg_type:4;
+	u8	rsvd1:3;
+	u8	op_type:1;
+	u8	num_cmds;
+	u8	num_frags;
+	u8	frag_num;
+	u8	cmd_op;
+	u16	seq_id;
+	u64	rsvd3;
+#elif defined(__BIG_ENDIAN)
+	u8	num_frags;
+	u8	num_cmds;
+	u8	op_type:1;
+	u8	rsvd1:3;
+	u8	msg_type:4;
+	u8	version;
+	u16	seq_id;
+	u8	cmd_op;
+	u8	frag_num;
+	u64	rsvd3;
+#endif
+};
+
+enum qlcnic_bc_commands {
+	QLCNIC_BC_CMD_CHANNEL_INIT = 0x0,
+	QLCNIC_BC_CMD_CHANNEL_TERM = 0x1,
+};
+
+#define QLC_BC_CMD 1
+
+struct qlcnic_trans_list {
+	/* Lock for manipulating list */
+	spinlock_t		lock;
+	struct list_head	wait_list;
+	int			count;
+};
+
+enum qlcnic_trans_state {
+	QLC_INIT = 0,
+	QLC_WAIT_FOR_CHANNEL_FREE,
+	QLC_WAIT_FOR_RESP,
+	QLC_ABORT,
+	QLC_END,
+};
+
+struct qlcnic_bc_trans {
+	u8				func_id;
+	u8				active;
+	u8				curr_rsp_frag;
+	u8				curr_req_frag;
+	u16				cmd_id;
+	u16				req_pay_size;
+	u16				rsp_pay_size;
+	u32				trans_id;
+	enum qlcnic_trans_state		trans_state;
+	struct list_head		list;
+	struct qlcnic_bc_hdr		*req_hdr;
+	struct qlcnic_bc_hdr		*rsp_hdr;
+	struct qlcnic_bc_payload	*req_pay;
+	struct qlcnic_bc_payload	*rsp_pay;
+	struct completion		resp_cmpl;
+	struct qlcnic_vf_info		*vf;
+};
+
+enum qlcnic_vf_state {
+	QLC_BC_VF_SEND = 0,
+	QLC_BC_VF_RECV,
+	QLC_BC_VF_CHANNEL,
+	QLC_BC_VF_STATE,
+};
+
 struct qlcnic_resources {
 	u16 num_tx_mac_filters;
 	u16 num_rx_ucast_mac_filters;
@@ -34,10 +112,36 @@ struct qlcnic_resources {
 	u16 max_remote_ipv6_addrs;
 };
 
+struct qlcnic_vport {
+	u16			handle;
+	u8			mac[6];
+};
+
+struct qlcnic_vf_info {
+	u8				pci_func;
+	unsigned long			state;
+	struct completion		ch_free_cmpl;
+	struct work_struct		trans_work;
+	/* It synchronizes commands sent from VF */
+	struct mutex			send_cmd_lock;
+	struct qlcnic_bc_trans		*send_cmd;
+	struct qlcnic_trans_list	rcv_act;
+	struct qlcnic_trans_list	rcv_pend;
+	struct qlcnic_adapter		*adapter;
+	struct qlcnic_vport		*vp;
+};
+
+struct qlcnic_back_channel {
+	u16			trans_counter;
+	struct workqueue_struct *bc_trans_wq;
+};
+
 struct qlcnic_sriov {
 	u16				vp_handle;
 	u8				num_vfs;
 	struct qlcnic_resources		ff_max;
+	struct qlcnic_back_channel	bc;
+	struct qlcnic_vf_info		*vf_info;
 };
 
 int qlcnic_sriov_init(struct qlcnic_adapter *, int);
@@ -46,6 +150,10 @@ void __qlcnic_sriov_cleanup(struct qlcnic_adapter *);
 void qlcnic_sriov_vf_register_map(struct qlcnic_hardware_context *);
 int qlcnic_sriov_vf_init(struct qlcnic_adapter *, int);
 void qlcnic_sriov_vf_set_ops(struct qlcnic_adapter *);
+int qlcnic_sriov_func_to_index(struct qlcnic_adapter *, u8);
+int qlcnic_sriov_channel_cfg_cmd(struct qlcnic_adapter *, u8);
+void qlcnic_sriov_handle_bc_event(struct qlcnic_adapter *, u32);
+int qlcnic_sriov_cfg_bc_intr(struct qlcnic_adapter *, u8);
 
 static inline bool qlcnic_sriov_enable_check(struct qlcnic_adapter *adapter)
 {
@@ -53,6 +161,9 @@ static inline bool qlcnic_sriov_enable_check(struct qlcnic_adapter *adapter)
 }
 
 #ifdef CONFIG_QLCNIC_SRIOV
+void qlcnic_sriov_pf_process_bc_cmd(struct qlcnic_adapter *,
+				    struct qlcnic_bc_trans *,
+				    struct qlcnic_cmd_args *);
 void qlcnic_sriov_pf_disable(struct qlcnic_adapter *);
 void qlcnic_sriov_pf_cleanup(struct qlcnic_adapter *);
 int qlcnic_pci_sriov_configure(struct pci_dev *, int);

drivers/net/ethernet/qlogic/qlcnic/qlcnic_sriov_common.c

@@ -10,6 +10,20 @@
 #include "qlcnic_83xx_hw.h"
 #include <linux/types.h>
 
+#define QLC_BC_COMMAND	0
+#define QLC_BC_RESPONSE	1
+
+#define QLC_MBOX_RESP_TIMEOUT		(10 * HZ)
+#define QLC_MBOX_CH_FREE_TIMEOUT	(10 * HZ)
+
+#define QLC_BC_MSG		0
+#define QLC_BC_CFREE		1
+#define QLC_BC_HDR_SZ		16
+#define QLC_BC_PAYLOAD_SZ	(1024 - QLC_BC_HDR_SZ)
+
+static int qlcnic_sriov_vf_mbx_op(struct qlcnic_adapter *,
+				  struct qlcnic_cmd_args *);
+
 static struct qlcnic_hardware_ops qlcnic_sriov_vf_hw_ops = {
 	.read_crb			= qlcnic_83xx_read_crb,
 	.write_crb			= qlcnic_83xx_write_crb,
@@ -18,6 +32,7 @@ static struct qlcnic_hardware_ops qlcnic_sriov_vf_hw_ops = {
 	.get_mac_address		= qlcnic_83xx_get_mac_address,
 	.setup_intr			= qlcnic_83xx_setup_intr,
 	.alloc_mbx_args			= qlcnic_83xx_alloc_mbx_args,
+	.mbx_cmd			= qlcnic_sriov_vf_mbx_op,
 	.get_func_no			= qlcnic_83xx_get_func_no,
 	.api_lock			= qlcnic_83xx_cam_lock,
 	.api_unlock			= qlcnic_83xx_cam_unlock,
@@ -49,9 +64,50 @@ static struct qlcnic_nic_template qlcnic_sriov_vf_ops = {
 	.clear_legacy_intr	= qlcnic_83xx_clear_legacy_intr,
 };
 
+static const struct qlcnic_mailbox_metadata qlcnic_sriov_bc_mbx_tbl[] = {
+	{QLCNIC_BC_CMD_CHANNEL_INIT, 2, 2},
+	{QLCNIC_BC_CMD_CHANNEL_TERM, 2, 2},
+};
+
+static inline bool qlcnic_sriov_bc_msg_check(u32 val)
+{
+	return (val & (1 << QLC_BC_MSG)) ? true : false;
+}
+
+static inline bool qlcnic_sriov_channel_free_check(u32 val)
+{
+	return (val & (1 << QLC_BC_CFREE)) ? true : false;
+}
+
+static inline u8 qlcnic_sriov_target_func_id(u32 val)
+{
+	return (val >> 4) & 0xff;
+}
+
+static int qlcnic_sriov_virtid_fn(struct qlcnic_adapter *adapter, int vf_id)
+{
+	struct pci_dev *dev = adapter->pdev;
+	int pos;
+	u16 stride, offset;
+
+	if (qlcnic_sriov_vf_check(adapter))
+		return 0;
+
+	pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_SRIOV);
+	pci_read_config_word(dev, pos + PCI_SRIOV_VF_OFFSET, &offset);
+	pci_read_config_word(dev, pos + PCI_SRIOV_VF_STRIDE, &stride);
+
+	return (dev->devfn + offset + stride * vf_id) & 0xff;
+}
+
 int qlcnic_sriov_init(struct qlcnic_adapter *adapter, int num_vfs)
 {
 	struct qlcnic_sriov *sriov;
+	struct qlcnic_back_channel *bc;
+	struct workqueue_struct *wq;
+	struct qlcnic_vport *vp;
+	struct qlcnic_vf_info *vf;
+	int err, i;
 
 	if (!qlcnic_sriov_enable_check(adapter))
 		return -EIO;
@@ -62,19 +118,84 @@ int qlcnic_sriov_init(struct qlcnic_adapter *adapter, int num_vfs)
 
 	adapter->ahw->sriov = sriov;
 	sriov->num_vfs = num_vfs;
+	bc = &sriov->bc;
+	sriov->vf_info = kzalloc(sizeof(struct qlcnic_vf_info) *
+				 num_vfs, GFP_KERNEL);
+	if (!sriov->vf_info) {
+		err = -ENOMEM;
+		goto qlcnic_free_sriov;
+	}
+
+	wq = create_singlethread_workqueue("bc-trans");
+	if (wq == NULL) {
+		err = -ENOMEM;
+		dev_err(&adapter->pdev->dev,
+			"Cannot create bc-trans workqueue\n");
+		goto qlcnic_free_vf_info;
+	}
+
+	bc->bc_trans_wq = wq;
+
+	for (i = 0; i < num_vfs; i++) {
+		vf = &sriov->vf_info[i];
+		vf->adapter = adapter;
+		vf->pci_func = qlcnic_sriov_virtid_fn(adapter, i);
+		mutex_init(&vf->send_cmd_lock);
+		INIT_LIST_HEAD(&vf->rcv_act.wait_list);
+		INIT_LIST_HEAD(&vf->rcv_pend.wait_list);
+		spin_lock_init(&vf->rcv_act.lock);
+		spin_lock_init(&vf->rcv_pend.lock);
+		init_completion(&vf->ch_free_cmpl);
+
+		if (qlcnic_sriov_pf_check(adapter)) {
+			vp = kzalloc(sizeof(struct qlcnic_vport), GFP_KERNEL);
+			if (!vp) {
+				err = -ENOMEM;
+				goto qlcnic_destroy_trans_wq;
+			}
+			sriov->vf_info[i].vp = vp;
+			random_ether_addr(vp->mac);
+			dev_info(&adapter->pdev->dev,
+				 "MAC Address %pM is configured for VF %d\n",
+				 vp->mac, i);
+		}
+	}
+
 	return 0;
+
+qlcnic_destroy_trans_wq:
+	destroy_workqueue(bc->bc_trans_wq);
+
+qlcnic_free_vf_info:
+	kfree(sriov->vf_info);
+
+qlcnic_free_sriov:
+	kfree(adapter->ahw->sriov);
+	return err;
 }
 
 void __qlcnic_sriov_cleanup(struct qlcnic_adapter *adapter)
 {
+	struct qlcnic_sriov *sriov = adapter->ahw->sriov;
+	struct qlcnic_back_channel *bc = &sriov->bc;
+	int i;
+
 	if (!qlcnic_sriov_enable_check(adapter))
 		return;
 
+	destroy_workqueue(bc->bc_trans_wq);
+
+	for (i = 0; i < sriov->num_vfs; i++)
+		kfree(sriov->vf_info[i].vp);
+
+	kfree(sriov->vf_info);
 	kfree(adapter->ahw->sriov);
 }
 
 static void qlcnic_sriov_vf_cleanup(struct qlcnic_adapter *adapter)
 {
+	qlcnic_sriov_channel_cfg_cmd(adapter, QLCNIC_BC_CMD_CHANNEL_TERM);
+	qlcnic_sriov_cfg_bc_intr(adapter, 0);
 	__qlcnic_sriov_cleanup(adapter);
 }
 
@@ -87,6 +208,103 @@ void qlcnic_sriov_cleanup(struct qlcnic_adapter *adapter)
 		qlcnic_sriov_vf_cleanup(adapter);
 }
 
+static int qlcnic_sriov_post_bc_msg(struct qlcnic_adapter *adapter, u32 *hdr,
+				    u32 *pay, u8 pci_func, u8 size)
+{
+	struct qlcnic_hardware_context *ahw = adapter->ahw;
+	unsigned long flags;
+	u32 rsp, mbx_val, fw_data, rsp_num, mbx_cmd, val;
+	u16 opcode;
+	u8 mbx_err_code;
+	int i, j;
+
+	opcode = ((struct qlcnic_bc_hdr *)hdr)->cmd_op;
+
+	if (!test_bit(QLC_83XX_MBX_READY, &adapter->ahw->idc.status)) {
+		dev_info(&adapter->pdev->dev,
+			 "Mailbox cmd attempted, 0x%x\n", opcode);
+		dev_info(&adapter->pdev->dev, "Mailbox detached\n");
+		return 0;
+	}
+
+	spin_lock_irqsave(&ahw->mbx_lock, flags);
+
+	mbx_val = QLCRDX(ahw, QLCNIC_HOST_MBX_CTRL);
+	if (mbx_val) {
+		QLCDB(adapter, DRV, "Mailbox cmd attempted, 0x%x\n", opcode);
+		spin_unlock_irqrestore(&ahw->mbx_lock, flags);
+		return QLCNIC_RCODE_TIMEOUT;
+	}
+	/* Fill in mailbox registers */
+	val = size + (sizeof(struct qlcnic_bc_hdr) / sizeof(u32));
+	mbx_cmd = 0x31 | (val << 16) | (adapter->ahw->fw_hal_version << 29);
+
+	writel(mbx_cmd, QLCNIC_MBX_HOST(ahw, 0));
+	mbx_cmd = 0x1 | (1 << 4);
+
+	if (qlcnic_sriov_pf_check(adapter))
+		mbx_cmd |= (pci_func << 5);
+
+	writel(mbx_cmd, QLCNIC_MBX_HOST(ahw, 1));
+	for (i = 2, j = 0; j < (sizeof(struct qlcnic_bc_hdr) / sizeof(u32));
+			i++, j++) {
+		writel(*(hdr++), QLCNIC_MBX_HOST(ahw, i));
+	}
+	for (j = 0; j < size; j++, i++)
+		writel(*(pay++), QLCNIC_MBX_HOST(ahw, i));
+
+	/* Signal FW about the impending command */
+	QLCWRX(ahw, QLCNIC_HOST_MBX_CTRL, QLCNIC_SET_OWNER);
+
+	/* Waiting for the mailbox cmd to complete and while waiting here
+	 * some AEN might arrive. If more than 5 seconds expire we can
+	 * assume something is wrong.
+	 */
+poll:
+	rsp = qlcnic_83xx_mbx_poll(adapter);
+	if (rsp != QLCNIC_RCODE_TIMEOUT) {
+		/* Get the FW response data */
+		fw_data = readl(QLCNIC_MBX_FW(ahw, 0));
+		if (fw_data &  QLCNIC_MBX_ASYNC_EVENT) {
+			qlcnic_83xx_process_aen(adapter);
+			mbx_val = QLCRDX(ahw, QLCNIC_HOST_MBX_CTRL);
+			if (mbx_val)
+				goto poll;
+		}
+		mbx_err_code = QLCNIC_MBX_STATUS(fw_data);
+		rsp_num = QLCNIC_MBX_NUM_REGS(fw_data);
+		opcode = QLCNIC_MBX_RSP(fw_data);
+
+		switch (mbx_err_code) {
+		case QLCNIC_MBX_RSP_OK:
+		case QLCNIC_MBX_PORT_RSP_OK:
+			rsp = QLCNIC_RCODE_SUCCESS;
+			break;
+		default:
+			if (opcode == QLCNIC_CMD_CONFIG_MAC_VLAN) {
+				rsp = qlcnic_83xx_mac_rcode(adapter);
+				if (!rsp)
+					goto out;
+			}
+			dev_err(&adapter->pdev->dev,
+				"MBX command 0x%x failed with err:0x%x\n",
+				opcode, mbx_err_code);
+			rsp = mbx_err_code;
+			break;
+		}
+		goto out;
+	}
+
+	dev_err(&adapter->pdev->dev, "MBX command 0x%x timed out\n",
+		QLCNIC_MBX_RSP(mbx_cmd));
+	rsp = QLCNIC_RCODE_TIMEOUT;
+out:
+	/* clear fw mbx control register */
+	QLCWRX(ahw, QLCNIC_FW_MBX_CTRL, QLCNIC_CLR_OWNER);
+	spin_unlock_irqrestore(&adapter->ahw->mbx_lock, flags);
+	return rsp;
+}
+
 static int qlcnic_sriov_setup_vf(struct qlcnic_adapter *adapter,
 				 int pci_using_dac)
 {
@@ -110,15 +328,29 @@ static int qlcnic_sriov_setup_vf(struct qlcnic_adapter *adapter,
 	if (err)
 		goto err_out_disable_mbx_intr;
 
-	err = qlcnic_setup_netdev(adapter, adapter->netdev, pci_using_dac);
+	err = qlcnic_sriov_cfg_bc_intr(adapter, 1);
 	if (err)
 		goto err_out_cleanup_sriov;
 
+	err = qlcnic_sriov_channel_cfg_cmd(adapter, QLCNIC_BC_CMD_CHANNEL_INIT);
+	if (err)
+		goto err_out_disable_bc_intr;
+
+	err = qlcnic_setup_netdev(adapter, adapter->netdev, pci_using_dac);
+	if (err)
+		goto err_out_send_channel_term;
+
 	pci_set_drvdata(adapter->pdev, adapter);
 	dev_info(&adapter->pdev->dev, "%s: XGbE port initialized\n",
 		 adapter->netdev->name);
 	return 0;
 
+err_out_send_channel_term:
+	qlcnic_sriov_channel_cfg_cmd(adapter, QLCNIC_BC_CMD_CHANNEL_TERM);
+
+err_out_disable_bc_intr:
+	qlcnic_sriov_cfg_bc_intr(adapter, 0);
+
 err_out_cleanup_sriov:
 	__qlcnic_sriov_cleanup(adapter);
 
@@ -173,3 +405,720 @@ void qlcnic_sriov_vf_register_map(struct qlcnic_hardware_context *ahw)
 	ahw->reg_tbl		= (u32 *)qlcnic_83xx_reg_tbl;
 	ahw->ext_reg_tbl	= (u32 *)qlcnic_83xx_ext_reg_tbl;
 }
+
+static u32 qlcnic_sriov_get_bc_paysize(u32 real_pay_size, u8 curr_frag)
+{
+	u32 pay_size;
+
+	pay_size = real_pay_size / ((curr_frag + 1) * QLC_BC_PAYLOAD_SZ);
+
+	if (pay_size)
+		pay_size = QLC_BC_PAYLOAD_SZ;
+	else
+		pay_size = real_pay_size % QLC_BC_PAYLOAD_SZ;
+
+	return pay_size;
+}
+
+int qlcnic_sriov_func_to_index(struct qlcnic_adapter *adapter, u8 pci_func)
+{
+	struct qlcnic_vf_info *vf_info = adapter->ahw->sriov->vf_info;
+	u8 i;
+
+	if (qlcnic_sriov_vf_check(adapter))
+		return 0;
+
+	for (i = 0; i < adapter->ahw->sriov->num_vfs; i++) {
+		if (vf_info[i].pci_func == pci_func)
+			return i;
+	}
+
+	return -EINVAL;
+}
+
+static inline int qlcnic_sriov_alloc_bc_trans(struct qlcnic_bc_trans **trans)
+{
+	*trans = kzalloc(sizeof(struct qlcnic_bc_trans), GFP_ATOMIC);
+	if (!*trans)
+		return -ENOMEM;
+
+	init_completion(&(*trans)->resp_cmpl);
+	return 0;
+}
+
+static inline int qlcnic_sriov_alloc_bc_msg(struct qlcnic_bc_hdr **hdr,
+					    u32 size)
+{
+	*hdr = kzalloc(sizeof(struct qlcnic_bc_hdr) * size, GFP_ATOMIC);
+	if (!*hdr)
+		return -ENOMEM;
+
+	return 0;
+}
+
+static int qlcnic_sriov_alloc_bc_mbx_args(struct qlcnic_cmd_args *mbx, u32 type)
+{
+	const struct qlcnic_mailbox_metadata *mbx_tbl;
+	int i, size;
+
+	mbx_tbl = qlcnic_sriov_bc_mbx_tbl;
+	size = ARRAY_SIZE(qlcnic_sriov_bc_mbx_tbl);
+
+	for (i = 0; i < size; i++) {
+		if (type == mbx_tbl[i].cmd) {
+			mbx->op_type = QLC_BC_CMD;
+			mbx->req.num = mbx_tbl[i].in_args;
+			mbx->rsp.num = mbx_tbl[i].out_args;
+			mbx->req.arg = kcalloc(mbx->req.num, sizeof(u32),
+					       GFP_ATOMIC);
+			if (!mbx->req.arg)
+				return -ENOMEM;
+			mbx->rsp.arg = kcalloc(mbx->rsp.num, sizeof(u32),
+					       GFP_ATOMIC);
+			if (!mbx->rsp.arg) {
+				kfree(mbx->req.arg);
+				mbx->req.arg = NULL;
+				return -ENOMEM;
+			}
+			memset(mbx->req.arg, 0, sizeof(u32) * mbx->req.num);
+			memset(mbx->rsp.arg, 0, sizeof(u32) * mbx->rsp.num);
+			mbx->req.arg[0] = (type | (mbx->req.num << 16) |
+					   (3 << 29));
+			return 0;
+		}
+	}
+	return -EINVAL;
+}
+
+static int qlcnic_sriov_prepare_bc_hdr(struct qlcnic_bc_trans *trans,
+				       struct qlcnic_cmd_args *cmd,
+				       u16 seq, u8 msg_type)
+{
+	struct qlcnic_bc_hdr *hdr;
+	int i;
+	u32 num_regs, bc_pay_sz;
+	u16 remainder;
+	u8 cmd_op, num_frags, t_num_frags;
+
+	bc_pay_sz = QLC_BC_PAYLOAD_SZ;
+	if (msg_type == QLC_BC_COMMAND) {
+		trans->req_pay = (struct qlcnic_bc_payload *)cmd->req.arg;
+		trans->rsp_pay = (struct qlcnic_bc_payload *)cmd->rsp.arg;
+		num_regs = cmd->req.num;
+		trans->req_pay_size = (num_regs * 4);
+		num_regs = cmd->rsp.num;
+		trans->rsp_pay_size = (num_regs * 4);
+		cmd_op = cmd->req.arg[0] & 0xff;
+		remainder = (trans->req_pay_size) % (bc_pay_sz);
+		num_frags = (trans->req_pay_size) / (bc_pay_sz);
+		if (remainder)
+			num_frags++;
+		t_num_frags = num_frags;
+		if (qlcnic_sriov_alloc_bc_msg(&trans->req_hdr, num_frags))
+			return -ENOMEM;
+		remainder = (trans->rsp_pay_size) % (bc_pay_sz);
+		num_frags = (trans->rsp_pay_size) / (bc_pay_sz);
+		if (remainder)
+			num_frags++;
+		if (qlcnic_sriov_alloc_bc_msg(&trans->rsp_hdr, num_frags))
+			return -ENOMEM;
+		num_frags  = t_num_frags;
+		hdr = trans->req_hdr;
+	}  else {
+		cmd->req.arg = (u32 *)trans->req_pay;
+		cmd->rsp.arg = (u32 *)trans->rsp_pay;
+		cmd_op = cmd->req.arg[0] & 0xff;
+		remainder = (trans->rsp_pay_size) % (bc_pay_sz);
+		num_frags = (trans->rsp_pay_size) / (bc_pay_sz);
+		if (remainder)
+			num_frags++;
+		cmd->req.num = trans->req_pay_size / 4;
+		cmd->rsp.num = trans->rsp_pay_size / 4;
+		hdr = trans->rsp_hdr;
+	}
+
+	trans->trans_id = seq;
+	trans->cmd_id = cmd_op;
+	for (i = 0; i < num_frags; i++) {
+		hdr[i].version = 2;
+		hdr[i].msg_type = msg_type;
+		hdr[i].op_type = cmd->op_type;
+		hdr[i].num_cmds = 1;
+		hdr[i].num_frags = num_frags;
+		hdr[i].frag_num = i + 1;
+		hdr[i].cmd_op = cmd_op;
+		hdr[i].seq_id = seq;
+	}
+	return 0;
+}
+
+static void qlcnic_sriov_cleanup_transaction(struct qlcnic_bc_trans *trans)
+{
+	if (!trans)
+		return;
+	kfree(trans->req_hdr);
+	kfree(trans->rsp_hdr);
+	kfree(trans);
+}
+
+static int qlcnic_sriov_clear_trans(struct qlcnic_vf_info *vf,
+				    struct qlcnic_bc_trans *trans, u8 type)
+{
+	struct qlcnic_trans_list *t_list;
+	unsigned long flags;
+	int ret = 0;
+
+	if (type == QLC_BC_RESPONSE) {
+		t_list = &vf->rcv_act;
+		spin_lock_irqsave(&t_list->lock, flags);
+		t_list->count--;
+		list_del(&trans->list);
+		if (t_list->count > 0)
+			ret = 1;
+		spin_unlock_irqrestore(&t_list->lock, flags);
+	}
+	if (type == QLC_BC_COMMAND) {
+		while (test_and_set_bit(QLC_BC_VF_SEND, &vf->state))
+			msleep(100);
+		vf->send_cmd = NULL;
+		clear_bit(QLC_BC_VF_SEND, &vf->state);
+	}
+	return ret;
+}
+
+static void qlcnic_sriov_schedule_bc_cmd(struct qlcnic_sriov *sriov,
+					 struct qlcnic_vf_info *vf,
+					 work_func_t func)
+{
+	INIT_WORK(&vf->trans_work, func);
+	queue_work(sriov->bc.bc_trans_wq, &vf->trans_work);
+}
+
+static inline void qlcnic_sriov_wait_for_resp(struct qlcnic_bc_trans *trans)
+{
+	struct completion *cmpl = &trans->resp_cmpl;
+
+	if (wait_for_completion_timeout(cmpl, QLC_MBOX_RESP_TIMEOUT))
+		trans->trans_state = QLC_END;
+	else
+		trans->trans_state = QLC_ABORT;
+
+	return;
+}
+
+static void qlcnic_sriov_handle_multi_frags(struct qlcnic_bc_trans *trans,
+					    u8 type)
+{
+	if (type == QLC_BC_RESPONSE) {
+		trans->curr_rsp_frag++;
+		if (trans->curr_rsp_frag < trans->rsp_hdr->num_frags)
+			trans->trans_state = QLC_INIT;
+		else
+			trans->trans_state = QLC_END;
+	} else {
+		trans->curr_req_frag++;
+		if (trans->curr_req_frag < trans->req_hdr->num_frags)
+			trans->trans_state = QLC_INIT;
+		else
+			trans->trans_state = QLC_WAIT_FOR_RESP;
+	}
+}
+
+static void qlcnic_sriov_wait_for_channel_free(struct qlcnic_bc_trans *trans,
+					       u8 type)
+{
+	struct qlcnic_vf_info *vf = trans->vf;
+	struct completion *cmpl = &vf->ch_free_cmpl;
+
+	if (!wait_for_completion_timeout(cmpl, QLC_MBOX_CH_FREE_TIMEOUT)) {
+		trans->trans_state = QLC_ABORT;
+		return;
+	}
+
+	clear_bit(QLC_BC_VF_CHANNEL, &vf->state);
+	qlcnic_sriov_handle_multi_frags(trans, type);
+}
+
+static void qlcnic_sriov_pull_bc_msg(struct qlcnic_adapter *adapter,
+				     u32 *hdr, u32 *pay, u32 size)
+{
+	struct qlcnic_hardware_context *ahw = adapter->ahw;
+	u32 fw_mbx;
+	u8 i, max = 2, hdr_size, j;
+
+	hdr_size = (sizeof(struct qlcnic_bc_hdr) / sizeof(u32));
+	max = (size / sizeof(u32)) + hdr_size;
+
+	fw_mbx = readl(QLCNIC_MBX_FW(ahw, 0));
+	for (i = 2, j = 0; j < hdr_size; i++, j++)
+		*(hdr++) = readl(QLCNIC_MBX_FW(ahw, i));
+	for (; j < max; i++, j++)
+		*(pay++) = readl(QLCNIC_MBX_FW(ahw, i));
+}
+
+static int __qlcnic_sriov_issue_bc_post(struct qlcnic_vf_info *vf)
+{
+	int ret = -EBUSY;
+	u32 timeout = 10000;
+
+	do {
+		if (!test_and_set_bit(QLC_BC_VF_CHANNEL, &vf->state)) {
+			ret = 0;
+			break;
+		}
+		mdelay(1);
+	} while (--timeout);
+
+	return ret;
+}
+
+static int qlcnic_sriov_issue_bc_post(struct qlcnic_bc_trans *trans, u8 type)
+{
+	struct qlcnic_vf_info *vf = trans->vf;
+	u32 pay_size, hdr_size;
+	u32 *hdr, *pay;
+	int ret;
+	u8 pci_func = trans->func_id;
+
+	if (__qlcnic_sriov_issue_bc_post(vf))
+		return -EBUSY;
+
+	if (type == QLC_BC_COMMAND) {
+		hdr = (u32 *)(trans->req_hdr + trans->curr_req_frag);
+		pay = (u32 *)(trans->req_pay + trans->curr_req_frag);
+		hdr_size = (sizeof(struct qlcnic_bc_hdr) / sizeof(u32));
+		pay_size = qlcnic_sriov_get_bc_paysize(trans->req_pay_size,
+						       trans->curr_req_frag);
+		pay_size = (pay_size / sizeof(u32));
+	} else {
+		hdr = (u32 *)(trans->rsp_hdr + trans->curr_rsp_frag);
+		pay = (u32 *)(trans->rsp_pay + trans->curr_rsp_frag);
+		hdr_size = (sizeof(struct qlcnic_bc_hdr) / sizeof(u32));
+		pay_size = qlcnic_sriov_get_bc_paysize(trans->rsp_pay_size,
+						       trans->curr_rsp_frag);
+		pay_size = (pay_size / sizeof(u32));
+	}
+
+	ret = qlcnic_sriov_post_bc_msg(vf->adapter, hdr, pay,
+				       pci_func, pay_size);
+	return ret;
+}
+
+static int __qlcnic_sriov_send_bc_msg(struct qlcnic_bc_trans *trans,
+				      struct qlcnic_vf_info *vf, u8 type)
+{
+	int err;
+	bool flag = true;
+
+	while (flag) {
+		switch (trans->trans_state) {
+		case QLC_INIT:
+			trans->trans_state = QLC_WAIT_FOR_CHANNEL_FREE;
+			if (qlcnic_sriov_issue_bc_post(trans, type))
+				trans->trans_state = QLC_ABORT;
+			break;
+		case QLC_WAIT_FOR_CHANNEL_FREE:
+			qlcnic_sriov_wait_for_channel_free(trans, type);
+			break;
+		case QLC_WAIT_FOR_RESP:
+			qlcnic_sriov_wait_for_resp(trans);
+			break;
+		case QLC_END:
+			err = 0;
+			flag = false;
+			break;
+		case QLC_ABORT:
+			err = -EIO;
+			flag = false;
+			clear_bit(QLC_BC_VF_CHANNEL, &vf->state);
+			break;
+		default:
+			err = -EIO;
+			flag = false;
+		}
+	}
+	return err;
+}
+
+static int qlcnic_sriov_send_bc_cmd(struct qlcnic_adapter *adapter,
+				    struct qlcnic_bc_trans *trans, int pci_func)
+{
+	struct qlcnic_vf_info *vf;
+	int err, index = qlcnic_sriov_func_to_index(adapter, pci_func);
+
+	if (index < 0)
+		return -EIO;
+
+	vf = &adapter->ahw->sriov->vf_info[index];
+	trans->vf = vf;
+	trans->func_id = pci_func;
+
+	if (!test_bit(QLC_BC_VF_STATE, &vf->state)) {
+		if (qlcnic_sriov_pf_check(adapter))
+			return -EIO;
+		if (qlcnic_sriov_vf_check(adapter) &&
+		    trans->cmd_id != QLCNIC_BC_CMD_CHANNEL_INIT)
+			return -EIO;
+	}
+
+	mutex_lock(&vf->send_cmd_lock);
+	vf->send_cmd = trans;
+	err = __qlcnic_sriov_send_bc_msg(trans, vf, QLC_BC_COMMAND);
+	qlcnic_sriov_clear_trans(vf, trans, QLC_BC_COMMAND);
+	mutex_unlock(&vf->send_cmd_lock);
+	return err;
+}
+
+static void __qlcnic_sriov_process_bc_cmd(struct qlcnic_adapter *adapter,
+					  struct qlcnic_bc_trans *trans,
+					  struct qlcnic_cmd_args *cmd)
+{
+#ifdef CONFIG_QLCNIC_SRIOV
+	if (qlcnic_sriov_pf_check(adapter)) {
+		qlcnic_sriov_pf_process_bc_cmd(adapter, trans, cmd);
+		return;
+	}
+#endif
+	cmd->rsp.arg[0] |= (0x9 << 25);
+	return;
+}
+
+static void qlcnic_sriov_process_bc_cmd(struct work_struct *work)
+{
+	struct qlcnic_vf_info *vf = container_of(work, struct qlcnic_vf_info,
+						 trans_work);
+	struct qlcnic_bc_trans *trans = NULL;
+	struct qlcnic_adapter *adapter  = vf->adapter;
+	struct qlcnic_cmd_args cmd;
+	u8 req;
+
+	trans = list_first_entry(&vf->rcv_act.wait_list,
+				 struct qlcnic_bc_trans, list);
+	adapter = vf->adapter;
+
+	if (qlcnic_sriov_prepare_bc_hdr(trans, &cmd, trans->req_hdr->seq_id,
+					QLC_BC_RESPONSE))
+		goto cleanup_trans;
+
+	__qlcnic_sriov_process_bc_cmd(adapter, trans, &cmd);
+	trans->trans_state = QLC_INIT;
+	__qlcnic_sriov_send_bc_msg(trans, vf, QLC_BC_RESPONSE);
+
+cleanup_trans:
+	qlcnic_free_mbx_args(&cmd);
+	req = qlcnic_sriov_clear_trans(vf, trans, QLC_BC_RESPONSE);
+	qlcnic_sriov_cleanup_transaction(trans);
+	if (req)
+		qlcnic_sriov_schedule_bc_cmd(adapter->ahw->sriov, vf,
+					     qlcnic_sriov_process_bc_cmd);
+}
+
+static void qlcnic_sriov_handle_bc_resp(struct qlcnic_bc_hdr *hdr,
+					struct qlcnic_vf_info *vf)
+{
+	struct qlcnic_bc_trans *trans;
+	u32 pay_size;
+
+	if (test_and_set_bit(QLC_BC_VF_SEND, &vf->state))
+		return;
+
+	trans = vf->send_cmd;
+
+	if (trans == NULL)
+		goto clear_send;
+
+	if (trans->trans_id != hdr->seq_id)
+		goto clear_send;
+
+	pay_size = qlcnic_sriov_get_bc_paysize(trans->rsp_pay_size,
+					       trans->curr_rsp_frag);
+	qlcnic_sriov_pull_bc_msg(vf->adapter,
+				 (u32 *)(trans->rsp_hdr + trans->curr_rsp_frag),
+				 (u32 *)(trans->rsp_pay + trans->curr_rsp_frag),
+				 pay_size);
+	if (++trans->curr_rsp_frag < trans->rsp_hdr->num_frags)
+		goto clear_send;
+
+	complete(&trans->resp_cmpl);
+
+clear_send:
+	clear_bit(QLC_BC_VF_SEND, &vf->state);
+}
+
+static int qlcnic_sriov_add_act_list(struct qlcnic_sriov *sriov,
+				     struct qlcnic_vf_info *vf,
+				     struct qlcnic_bc_trans *trans)
+{
+	struct qlcnic_trans_list *t_list = &vf->rcv_act;
+
+	spin_lock(&t_list->lock);
+	t_list->count++;
+	list_add_tail(&trans->list, &t_list->wait_list);
+	if (t_list->count == 1)
+		qlcnic_sriov_schedule_bc_cmd(sriov, vf,
+					     qlcnic_sriov_process_bc_cmd);
+	spin_unlock(&t_list->lock);
+	return 0;
+}
+
+static void qlcnic_sriov_handle_pending_trans(struct qlcnic_sriov *sriov,
+					      struct qlcnic_vf_info *vf,
+					      struct qlcnic_bc_hdr *hdr)
+{
+	struct qlcnic_bc_trans *trans = NULL;
+	struct list_head *node;
+	u32 pay_size, curr_frag;
+	u8 found = 0, active = 0;
+
+	spin_lock(&vf->rcv_pend.lock);
+	if (vf->rcv_pend.count > 0) {
+		list_for_each(node, &vf->rcv_pend.wait_list) {
+			trans = list_entry(node, struct qlcnic_bc_trans, list);
+			if (trans->trans_id == hdr->seq_id) {
+				found = 1;
+				break;
+			}
+		}
+	}
+
+	if (found) {
+		curr_frag = trans->curr_req_frag;
+		pay_size = qlcnic_sriov_get_bc_paysize(trans->req_pay_size,
+						       curr_frag);
+		qlcnic_sriov_pull_bc_msg(vf->adapter,
+					 (u32 *)(trans->req_hdr + curr_frag),
+					 (u32 *)(trans->req_pay + curr_frag),
+					 pay_size);
+		trans->curr_req_frag++;
+		if (trans->curr_req_frag >= hdr->num_frags) {
+			vf->rcv_pend.count--;
+			list_del(&trans->list);
+			active = 1;
+		}
+	}
+	spin_unlock(&vf->rcv_pend.lock);
+
+	if (active)
+		if (qlcnic_sriov_add_act_list(sriov, vf, trans))
+			qlcnic_sriov_cleanup_transaction(trans);
+
+	return;
+}
+
+static void qlcnic_sriov_handle_bc_cmd(struct qlcnic_sriov *sriov,
+				       struct qlcnic_bc_hdr *hdr,
+				       struct qlcnic_vf_info *vf)
+{
+	struct qlcnic_bc_trans *trans;
+	struct qlcnic_adapter *adapter = vf->adapter;
+	struct qlcnic_cmd_args cmd;
+	u32 pay_size;
+	int err;
+	u8 cmd_op;
+
+	if (!test_bit(QLC_BC_VF_STATE, &vf->state) &&
+	    hdr->op_type != QLC_BC_CMD &&
+	    hdr->cmd_op != QLCNIC_BC_CMD_CHANNEL_INIT)
+		return;
+
+	if (hdr->frag_num > 1) {
+		qlcnic_sriov_handle_pending_trans(sriov, vf, hdr);
+		return;
+	}
+
+	cmd_op = hdr->cmd_op;
+	if (qlcnic_sriov_alloc_bc_trans(&trans))
+		return;
+
+	if (hdr->op_type == QLC_BC_CMD)
+		err = qlcnic_sriov_alloc_bc_mbx_args(&cmd, cmd_op);
+	else
+		err = qlcnic_alloc_mbx_args(&cmd, adapter, cmd_op);
+
+	if (err) {
+		qlcnic_sriov_cleanup_transaction(trans);
+		return;
+	}
+
+	cmd.op_type = hdr->op_type;
+	if (qlcnic_sriov_prepare_bc_hdr(trans, &cmd, hdr->seq_id,
+					QLC_BC_COMMAND)) {
+		qlcnic_free_mbx_args(&cmd);
+		qlcnic_sriov_cleanup_transaction(trans);
+		return;
+	}
+
+	pay_size = qlcnic_sriov_get_bc_paysize(trans->req_pay_size,
+					 trans->curr_req_frag);
+	qlcnic_sriov_pull_bc_msg(vf->adapter,
+				 (u32 *)(trans->req_hdr + trans->curr_req_frag),
+				 (u32 *)(trans->req_pay + trans->curr_req_frag),
+				 pay_size);
+	trans->func_id = vf->pci_func;
+	trans->vf = vf;
+	trans->trans_id = hdr->seq_id;
+	trans->curr_req_frag++;
+	if (trans->curr_req_frag == trans->req_hdr->num_frags) {
+		if (qlcnic_sriov_add_act_list(sriov, vf, trans)) {
+			qlcnic_free_mbx_args(&cmd);
+			qlcnic_sriov_cleanup_transaction(trans);
+		}
+	} else {
+		spin_lock(&vf->rcv_pend.lock);
+		list_add_tail(&trans->list, &vf->rcv_pend.wait_list);
+		vf->rcv_pend.count++;
+		spin_unlock(&vf->rcv_pend.lock);
+	}
+}
+
+static void qlcnic_sriov_handle_msg_event(struct qlcnic_sriov *sriov,
+					  struct qlcnic_vf_info *vf)
+{
+	struct qlcnic_bc_hdr hdr;
+	u32 *ptr = (u32 *)&hdr;
+	u8 msg_type, i;
+
+	for (i = 2; i < 6; i++)
+		ptr[i - 2] = readl(QLCNIC_MBX_FW(vf->adapter->ahw, i));
+	msg_type = hdr.msg_type;
+
+	switch (msg_type) {
+	case QLC_BC_COMMAND:
+		qlcnic_sriov_handle_bc_cmd(sriov, &hdr, vf);
+		break;
+	case QLC_BC_RESPONSE:
+		qlcnic_sriov_handle_bc_resp(&hdr, vf);
+		break;
+	}
+}
+
+void qlcnic_sriov_handle_bc_event(struct qlcnic_adapter *adapter, u32 event)
+{
+	struct qlcnic_vf_info *vf;
+	struct qlcnic_sriov *sriov;
+	int index;
+	u8 pci_func;
+
+	sriov = adapter->ahw->sriov;
+	pci_func = qlcnic_sriov_target_func_id(event);
+	index = qlcnic_sriov_func_to_index(adapter, pci_func);
+
+	if (index < 0)
+		return;
+
+	vf = &sriov->vf_info[index];
+	vf->pci_func = pci_func;
+
+	if (qlcnic_sriov_channel_free_check(event))
+		complete(&vf->ch_free_cmpl);
+
+	if (qlcnic_sriov_bc_msg_check(event))
+		qlcnic_sriov_handle_msg_event(sriov, vf);
+}
+
+int qlcnic_sriov_cfg_bc_intr(struct qlcnic_adapter *adapter, u8 enable)
+{
+	struct qlcnic_cmd_args cmd;
+	int err;
+
+	if (!test_bit(__QLCNIC_SRIOV_ENABLE, &adapter->state))
+		return 0;
+
+	if (qlcnic_alloc_mbx_args(&cmd, adapter, QLCNIC_CMD_BC_EVENT_SETUP))
+		return -ENOMEM;
+
+	if (enable)
+		cmd.req.arg[1] = (1 << 4) | (1 << 5) | (1 << 6) | (1 << 7);
+
+	err = qlcnic_83xx_mbx_op(adapter, &cmd);
+
+	if (err != QLCNIC_RCODE_SUCCESS) {
+		dev_err(&adapter->pdev->dev,
+			"Failed to %s bc events, err=%d\n",
+			(enable ? "enable" : "disable"), err);
+	}
+
+	qlcnic_free_mbx_args(&cmd);
+	return err;
+}
+
+static int qlcnic_sriov_vf_mbx_op(struct qlcnic_adapter *adapter,
+				  struct qlcnic_cmd_args *cmd)
+{
+	struct qlcnic_bc_trans *trans;
+	int err;
+	u32 rsp_data, opcode, mbx_err_code, rsp;
+	u16 seq = ++adapter->ahw->sriov->bc.trans_counter;
+
+	if (qlcnic_sriov_alloc_bc_trans(&trans))
+		return -ENOMEM;
+
+	if (qlcnic_sriov_prepare_bc_hdr(trans, cmd, seq, QLC_BC_COMMAND))
+		return -ENOMEM;
+
+	if (!test_bit(QLC_83XX_MBX_READY, &adapter->ahw->idc.status)) {
+		rsp = -EIO;
+		QLCDB(adapter, DRV, "MBX not Ready!(cmd 0x%x) for VF 0x%x\n",
+		      QLCNIC_MBX_RSP(cmd->req.arg[0]), adapter->ahw->pci_func);
+		goto err_out;
+	}
+
+	err = qlcnic_sriov_send_bc_cmd(adapter, trans, adapter->ahw->pci_func);
+	if (err) {
+		dev_err(&adapter->pdev->dev,
+			"MBX command 0x%x timed out for VF %d\n",
+			(cmd->req.arg[0] & 0xffff), adapter->ahw->pci_func);
+		rsp = QLCNIC_RCODE_TIMEOUT;
+		goto err_out;
+	}
+
+	rsp_data = cmd->rsp.arg[0];
+	mbx_err_code = QLCNIC_MBX_STATUS(rsp_data);
+	opcode = QLCNIC_MBX_RSP(cmd->req.arg[0]);
+
+	if ((mbx_err_code == QLCNIC_MBX_RSP_OK) ||
+	    (mbx_err_code == QLCNIC_MBX_PORT_RSP_OK)) {
+		rsp = QLCNIC_RCODE_SUCCESS;
+	} else {
+		rsp = mbx_err_code;
+		if (!rsp)
+			rsp = 1;
+		dev_err(&adapter->pdev->dev,
+			"MBX command 0x%x failed with err:0x%x for VF %d\n",
+			opcode, mbx_err_code, adapter->ahw->pci_func);
+	}
+
+err_out:
+	qlcnic_sriov_cleanup_transaction(trans);
+	return rsp;
+}
+
+int qlcnic_sriov_channel_cfg_cmd(struct qlcnic_adapter *adapter, u8 cmd_op)
+{
+	struct qlcnic_cmd_args cmd;
+	struct qlcnic_vf_info *vf = &adapter->ahw->sriov->vf_info[0];
+	int ret;
+
+	if (qlcnic_sriov_alloc_bc_mbx_args(&cmd, cmd_op))
+		return -ENOMEM;
+
+	ret = qlcnic_issue_cmd(adapter, &cmd);
+	if (ret) {
+		dev_err(&adapter->pdev->dev,
+			"Failed bc channel %s %d\n", cmd_op ? "term" : "init",
+			ret);
+		goto out;
+	}
+
+	cmd_op = (cmd.rsp.arg[0] & 0xff);
+	if (cmd.rsp.arg[0] >> 25 == 2)
+		return 2;
+	if (cmd_op == QLCNIC_BC_CMD_CHANNEL_INIT)
+		set_bit(QLC_BC_VF_STATE, &vf->state);
+	else
+		clear_bit(QLC_BC_VF_STATE, &vf->state);
+
+out:
+	qlcnic_free_mbx_args(&cmd);
+	return ret;
+}

drivers/net/ethernet/qlogic/qlcnic/qlcnic_sriov_pf.c

@@ -13,6 +13,10 @@
 
 static int qlcnic_sriov_pf_get_vport_handle(struct qlcnic_adapter *, u8);
 
+struct qlcnic_sriov_cmd_handler {
+	int (*fn) (struct qlcnic_bc_trans *, struct qlcnic_cmd_args *);
+};
+
 static int qlcnic_sriov_pf_set_vport_info(struct qlcnic_adapter *adapter,
 					  struct qlcnic_info *npar_info,
 					  u16 vport_id)
@@ -174,27 +178,54 @@ static void qlcnic_sriov_pf_reset_vport_handle(struct qlcnic_adapter *adapter,
 					       u8 func)
 {
 	struct qlcnic_sriov  *sriov = adapter->ahw->sriov;
+	struct qlcnic_vport *vp;
+	int index;
 
-	if (adapter->ahw->pci_func == func)
+	if (adapter->ahw->pci_func == func) {
 		sriov->vp_handle = 0;
+	} else {
+		index = qlcnic_sriov_func_to_index(adapter, func);
+		if (index < 0)
+			return;
+		vp = sriov->vf_info[index].vp;
+		vp->handle = 0;
+	}
 }
 
 static void qlcnic_sriov_pf_set_vport_handle(struct qlcnic_adapter *adapter,
 					     u16 vport_handle, u8 func)
 {
 	struct qlcnic_sriov  *sriov = adapter->ahw->sriov;
+	struct qlcnic_vport *vp;
+	int index;
 
-	if (adapter->ahw->pci_func == func)
+	if (adapter->ahw->pci_func == func) {
 		sriov->vp_handle = vport_handle;
+	} else {
+		index = qlcnic_sriov_func_to_index(adapter, func);
+		if (index < 0)
+			return;
+		vp = sriov->vf_info[index].vp;
+		vp->handle = vport_handle;
+	}
 }
 
 static int qlcnic_sriov_pf_get_vport_handle(struct qlcnic_adapter *adapter,
 					    u8 func)
 {
 	struct qlcnic_sriov  *sriov = adapter->ahw->sriov;
+	struct qlcnic_vf_info *vf_info;
+	int index;
 
-	if (adapter->ahw->pci_func == func)
+	if (adapter->ahw->pci_func == func) {
 		return sriov->vp_handle;
+	} else {
+		index = qlcnic_sriov_func_to_index(adapter, func);
+		if (index >= 0) {
+			vf_info = &sriov->vf_info[index];
+			return vf_info->vp->handle;
+		}
+	}
 
 	return -EINVAL;
 }
@@ -273,6 +304,7 @@ void qlcnic_sriov_pf_cleanup(struct qlcnic_adapter *adapter)
 	if (!qlcnic_sriov_enable_check(adapter))
 		return;
 
+	qlcnic_sriov_cfg_bc_intr(adapter, 0);
 	qlcnic_sriov_pf_config_vport(adapter, 0, func);
 	qlcnic_sriov_pf_cfg_eswitch(adapter, func, 0);
 	__qlcnic_sriov_cleanup(adapter);
@@ -349,6 +381,10 @@ static int qlcnic_sriov_pf_init(struct qlcnic_adapter *adapter)
 	if (err)
 		goto delete_vport;
 
+	err = qlcnic_sriov_cfg_bc_intr(adapter, 1);
+	if (err)
+		goto delete_vport;
+
 	ahw->physical_port = (u8) nic_info.phys_port;
 	ahw->switch_mode = nic_info.switch_mode;
 	ahw->max_mtu = nic_info.max_mtu;
@@ -453,3 +489,79 @@ int qlcnic_pci_sriov_configure(struct pci_dev *dev, int num_vfs)
 	clear_bit(__QLCNIC_RESETTING, &adapter->state);
 	return err;
 }
+
+static int qlcnic_sriov_set_vf_vport_info(struct qlcnic_adapter *adapter,
+					  u16 func)
+{
+	struct qlcnic_info defvp_info;
+	int err;
+
+	err = qlcnic_sriov_pf_cal_res_limit(adapter, &defvp_info, func);
+	if (err)
+		return -EIO;
+
+	return 0;
+}
+
+static int qlcnic_sriov_pf_channel_cfg_cmd(struct qlcnic_bc_trans *trans,
+					   struct qlcnic_cmd_args *cmd)
+{
+	struct qlcnic_vf_info *vf = trans->vf;
+	struct qlcnic_adapter *adapter = vf->adapter;
+	int err;
+	u16 func = vf->pci_func;
+
+	cmd->rsp.arg[0] = trans->req_hdr->cmd_op;
+	cmd->rsp.arg[0] |= (1 << 16);
+
+	if (trans->req_hdr->cmd_op == QLCNIC_BC_CMD_CHANNEL_INIT) {
+		err = qlcnic_sriov_pf_config_vport(adapter, 1, func);
+		if (!err) {
+			err = qlcnic_sriov_set_vf_vport_info(adapter, func);
+			if (err)
+				qlcnic_sriov_pf_config_vport(adapter, 0, func);
+		}
+	} else {
+		err = qlcnic_sriov_pf_config_vport(adapter, 0, func);
+	}
+
+	if (err)
+		goto err_out;
+
+	cmd->rsp.arg[0] |= (1 << 25);
+
+	if (trans->req_hdr->cmd_op == QLCNIC_BC_CMD_CHANNEL_INIT)
+		set_bit(QLC_BC_VF_STATE, &vf->state);
+	else
+		clear_bit(QLC_BC_VF_STATE, &vf->state);
+
+	return err;
+
+err_out:
+	cmd->rsp.arg[0] |= (2 << 25);
+	return err;
+}
+
+static const struct qlcnic_sriov_cmd_handler qlcnic_pf_bc_cmd_hdlr[] = {
+	[QLCNIC_BC_CMD_CHANNEL_INIT] = {&qlcnic_sriov_pf_channel_cfg_cmd},
+	[QLCNIC_BC_CMD_CHANNEL_TERM] = {&qlcnic_sriov_pf_channel_cfg_cmd},
+};
+
+void qlcnic_sriov_pf_process_bc_cmd(struct qlcnic_adapter *adapter,
+				    struct qlcnic_bc_trans *trans,
+				    struct qlcnic_cmd_args *cmd)
+{
+	u8 size, cmd_op;
+
+	cmd_op = trans->req_hdr->cmd_op;
+
+	if (trans->req_hdr->op_type == QLC_BC_CMD) {
+		size = ARRAY_SIZE(qlcnic_pf_bc_cmd_hdlr);
+		if (cmd_op < size) {
+			qlcnic_pf_bc_cmd_hdlr[cmd_op].fn(trans, cmd);
+			return;
+		}
+	}
+
+	cmd->rsp.arg[0] |= (0x9 << 25);
+}