qlcnic: SR-IOV VF probe

o Add PCI device entry for VF.
o Add HW operations for VF.
Signed-off-by: Manish Chopra <manish.chopra@qlogic.com>
Signed-off-by: Sucheta Chakraborty <sucheta.chakraborty@qlogic.com>
Signed-off-by: Rajesh Borundia <rajesh.borundia@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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

@@ -1523,6 +1523,9 @@ int qlcnic_set_eswitch_port_config(struct qlcnic_adapter *);
 void qlcnic_add_lb_filter(struct qlcnic_adapter *, struct sk_buff *, int,
 			  __le16);
 int qlcnic_83xx_configure_opmode(struct qlcnic_adapter *adapter);
+int qlcnic_read_mac_addr(struct qlcnic_adapter *);
+int qlcnic_setup_netdev(struct qlcnic_adapter *, struct net_device *, int);
+
 /*
  * QLOGIC Board information
  */
@@ -1647,7 +1650,10 @@ static inline int qlcnic_alloc_mbx_args(struct qlcnic_cmd_args *mbx,
 static inline int qlcnic_issue_cmd(struct qlcnic_adapter *adapter,
 				   struct qlcnic_cmd_args *cmd)
 {
+	if (adapter->ahw->hw_ops->mbx_cmd)
 		return adapter->ahw->hw_ops->mbx_cmd(adapter, cmd);
+
+	return -EIO;
 }
 
 static inline void qlcnic_get_func_no(struct qlcnic_adapter *adapter)
@@ -1667,11 +1673,13 @@ static inline void qlcnic_api_unlock(struct qlcnic_adapter *adapter)
 
 static inline void qlcnic_add_sysfs(struct qlcnic_adapter *adapter)
 {
+	if (adapter->ahw->hw_ops->add_sysfs)
 		adapter->ahw->hw_ops->add_sysfs(adapter);
 }
 
 static inline void qlcnic_remove_sysfs(struct qlcnic_adapter *adapter)
 {
+	if (adapter->ahw->hw_ops->remove_sysfs)
 		adapter->ahw->hw_ops->remove_sysfs(adapter);
 }
 
@@ -1790,11 +1798,13 @@ static inline int qlcnic_get_board_info(struct qlcnic_adapter *adapter)
 static inline void qlcnic_dev_request_reset(struct qlcnic_adapter *adapter,
 					    u32 key)
 {
+	if (adapter->nic_ops->request_reset)
 		adapter->nic_ops->request_reset(adapter, key);
 }
 
 static inline void qlcnic_cancel_idc_work(struct qlcnic_adapter *adapter)
 {
+	if (adapter->nic_ops->cancel_idc_work)
 		adapter->nic_ops->cancel_idc_work(adapter);
 }
 
@@ -1842,7 +1852,9 @@ extern const struct ethtool_ops qlcnic_ethtool_failed_ops;
 	} while (0)
 
 #define PCI_DEVICE_ID_QLOGIC_QLE834X    0x8030
+#define PCI_DEVICE_ID_QLOGIC_VF_QLE834X	0x8430
 #define PCI_DEVICE_ID_QLOGIC_QLE824X	0x8020
+
 static inline bool qlcnic_82xx_check(struct qlcnic_adapter *adapter)
 {
 	unsigned short device = adapter->pdev->device;
@@ -1852,7 +1864,12 @@ static inline bool qlcnic_82xx_check(struct qlcnic_adapter *adapter)
 static inline bool qlcnic_83xx_check(struct qlcnic_adapter *adapter)
 {
 	unsigned short device = adapter->pdev->device;
-	return (device == PCI_DEVICE_ID_QLOGIC_QLE834X) ? true : false;
+	bool status;
+
+	status = ((device == PCI_DEVICE_ID_QLOGIC_QLE834X) ||
+		  (device == PCI_DEVICE_ID_QLOGIC_VF_QLE834X)) ? true : false;
+
+	return status;
 }
 
 static inline bool qlcnic_sriov_pf_check(struct qlcnic_adapter *adapter)
@@ -1860,4 +1877,10 @@ static inline bool qlcnic_sriov_pf_check(struct qlcnic_adapter *adapter)
 	return (adapter->ahw->op_mode == QLCNIC_SRIOV_PF_FUNC) ? true : false;
 }
 
+static inline bool qlcnic_sriov_vf_check(struct qlcnic_adapter *adapter)
+{
+	unsigned short device = adapter->pdev->device;
+
+	return (device == PCI_DEVICE_ID_QLOGIC_VF_QLE834X) ? true : false;
+}
 #endif				/* __QLCNIC_H_ */

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

@@ -6,6 +6,7 @@
  */
 
 #include "qlcnic.h"
+#include "qlcnic_sriov.h"
 #include <linux/if_vlan.h>
 #include <linux/ipv6.h>
 #include <linux/ethtool.h>
@@ -212,7 +213,7 @@ static const struct qlcnic_mailbox_metadata qlcnic_83xx_mbx_tbl[] = {
 	{QLCNIC_CMD_CONFIG_VPORT, 4, 4},
 };
 
-static const u32 qlcnic_83xx_ext_reg_tbl[] = {
+const u32 qlcnic_83xx_ext_reg_tbl[] = {
 	0x38CC,		/* Global Reset */
 	0x38F0,		/* Wildcard */
 	0x38FC,		/* Informant */
@@ -258,7 +259,7 @@ static const u32 qlcnic_83xx_ext_reg_tbl[] = {
 	0x34A4,		/* QLC_83XX_ASIC_TEMP */
 };
 
-static const u32 qlcnic_83xx_reg_tbl[] = {
+const u32 qlcnic_83xx_reg_tbl[] = {
 	0x34A8,		/* PEG_HALT_STAT1 */
 	0x34AC,		/* PEG_HALT_STAT2 */
 	0x34B0,		/* FW_HEARTBEAT */
@@ -415,8 +416,11 @@ int qlcnic_83xx_setup_intr(struct qlcnic_adapter *adapter, u8 num_intr)
 		return err;
 	if (adapter->flags & QLCNIC_MSIX_ENABLED)
 		num_msix = adapter->ahw->num_msix;
-	else
+	else {
+		if (qlcnic_sriov_vf_check(adapter))
+			return -EINVAL;
 		num_msix = 1;
+	}
 	/* setup interrupt mapping table for fw */
 	ahw->intr_tbl = vzalloc(num_msix *
 				sizeof(struct qlcnic_intrpt_config));
@@ -649,7 +653,7 @@ int qlcnic_83xx_setup_mbx_intr(struct qlcnic_adapter *adapter)
 void qlcnic_83xx_get_func_no(struct qlcnic_adapter *adapter)
 {
 	u32 val = QLCRDX(adapter->ahw, QLCNIC_INFORMANT);
-	adapter->ahw->pci_func = val & 0xf;
+	adapter->ahw->pci_func = (val >> 24) & 0xff;
 }
 
 int qlcnic_83xx_cam_lock(struct qlcnic_adapter *adapter)
@@ -761,6 +765,11 @@ void qlcnic_83xx_check_vf(struct qlcnic_adapter *adapter,
 	ahw->fw_hal_version = 2;
 	qlcnic_get_func_no(adapter);
 
+	if (qlcnic_sriov_vf_check(adapter)) {
+		qlcnic_sriov_vf_set_ops(adapter);
+		return;
+	}
+
 	/* Determine function privilege level */
 	op_mode = QLCRDX(adapter->ahw, QLC_83XX_DRV_OP_MODE);
 	if (op_mode == QLC_83XX_DEFAULT_OPMODE)
@@ -1487,6 +1496,9 @@ void qlcnic_83xx_register_nic_idc_func(struct qlcnic_adapter *adapter,
 	struct qlcnic_cmd_args cmd;
 	int status;
 
+	if (qlcnic_sriov_vf_check(adapter))
+		return;
+
 	if (enable) {
 		qlcnic_alloc_mbx_args(&cmd, adapter, QLCNIC_CMD_INIT_NIC_FUNC);
 		cmd.req.arg[1] = BIT_0 | BIT_31;

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

@@ -419,7 +419,7 @@ int qlcnic_83xx_read_flash_descriptor_table(struct qlcnic_adapter *);
 int qlcnic_83xx_flash_read32(struct qlcnic_adapter *, u32, u8 *, int);
 int qlcnic_83xx_lockless_flash_read32(struct qlcnic_adapter *,
 				      u32, u8 *, int);
-int qlcnic_83xx_init(struct qlcnic_adapter *);
+int qlcnic_83xx_init(struct qlcnic_adapter *, int);
 int qlcnic_83xx_idc_ready_state_entry(struct qlcnic_adapter *);
 int qlcnic_83xx_check_hw_status(struct qlcnic_adapter *p_dev);
 void qlcnic_83xx_idc_poll_dev_state(struct work_struct *);

drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_init.c

@@ -5,6 +5,7 @@
  * See LICENSE.qlcnic for copyright and licensing details.
  */
 
+#include "qlcnic_sriov.h"
 #include "qlcnic.h"
 #include "qlcnic_hw.h"
 
@@ -2045,10 +2046,13 @@ static void qlcnic_83xx_clear_function_resources(struct qlcnic_adapter *adapter)
 	}
 }
 
-int qlcnic_83xx_init(struct qlcnic_adapter *adapter)
+int qlcnic_83xx_init(struct qlcnic_adapter *adapter, int pci_using_dac)
 {
 	struct qlcnic_hardware_context *ahw = adapter->ahw;
 
+	if (qlcnic_sriov_vf_check(adapter))
+		return qlcnic_sriov_vf_init(adapter, pci_using_dac);
+
 	if (qlcnic_83xx_check_hw_status(adapter))
 		return -EIO;
 

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

@@ -715,7 +715,8 @@ enum {
 	QLCNIC_PRIV_FUNC	= 1,
 	QLCNIC_NON_PRIV_FUNC	= 2,
 	QLCNIC_SRIOV_PF_FUNC	= 3,
-	QLCNIC_UNKNOWN_FUNC_MODE = 4
+	QLCNIC_SRIOV_VF_FUNC	= 4,
+	QLCNIC_UNKNOWN_FUNC_MODE = 5
 };
 
 enum {

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

@@ -110,6 +110,7 @@ static u32 qlcnic_vlan_tx_check(struct qlcnic_adapter *adapter)
 static DEFINE_PCI_DEVICE_TABLE(qlcnic_pci_tbl) = {
 	ENTRY(PCI_DEVICE_ID_QLOGIC_QLE824X),
 	ENTRY(PCI_DEVICE_ID_QLOGIC_QLE834X),
+	ENTRY(PCI_DEVICE_ID_QLOGIC_VF_QLE834X),
 	{0,}
 };
 
@@ -199,8 +200,7 @@ void qlcnic_free_sds_rings(struct qlcnic_recv_context *recv_ctx)
 	recv_ctx->sds_rings = NULL;
 }
 
-static int
-qlcnic_read_mac_addr(struct qlcnic_adapter *adapter)
+int qlcnic_read_mac_addr(struct qlcnic_adapter *adapter)
 {
 	u8 mac_addr[ETH_ALEN];
 	struct net_device *netdev = adapter->netdev;
@@ -713,6 +713,7 @@ static void qlcnic_get_bar_length(u32 dev_id, ulong *bar)
 		*bar = QLCNIC_82XX_BAR0_LENGTH;
 		break;
 	case PCI_DEVICE_ID_QLOGIC_QLE834X:
+	case PCI_DEVICE_ID_QLOGIC_VF_QLE834X:
 		*bar = QLCNIC_83XX_BAR0_LENGTH;
 		break;
 	default:
@@ -743,7 +744,7 @@ static int qlcnic_setup_pci_map(struct pci_dev *pdev,
 		return -EIO;
 	}
 
-	dev_info(&pdev->dev, "%dMB memory map\n", (int)(mem_len>>20));
+	dev_info(&pdev->dev, "%dKB memory map\n", (int)(mem_len >> 10));
 
 	ahw->pci_base0 = mem_ptr0;
 	ahw->pci_len0 = pci_len0;
@@ -1678,7 +1679,7 @@ qlcnic_reset_context(struct qlcnic_adapter *adapter)
 	return err;
 }
 
-static int
+int
 qlcnic_setup_netdev(struct qlcnic_adapter *adapter, struct net_device *netdev,
 		    int pci_using_dac)
 {
@@ -1813,6 +1814,9 @@ qlcnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	u32 capab2;
 	char board_name[QLCNIC_MAX_BOARD_NAME_LEN + 19]; /* MAC + ": " + name */
 
+	if (pdev->is_virtfn)
+		return -ENODEV;
+
 	err = pci_enable_device(pdev);
 	if (err)
 		return err;
@@ -1837,12 +1841,18 @@ qlcnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	if (!ahw)
 		goto err_out_free_res;
 
-	if (ent->device == PCI_DEVICE_ID_QLOGIC_QLE824X) {
+	switch (ent->device) {
+	case PCI_DEVICE_ID_QLOGIC_QLE824X:
 		ahw->hw_ops = &qlcnic_hw_ops;
-		ahw->reg_tbl = (u32 *)qlcnic_reg_tbl;
-	} else if (ent->device == PCI_DEVICE_ID_QLOGIC_QLE834X) {
+		ahw->reg_tbl = (u32 *) qlcnic_reg_tbl;
+		break;
+	case PCI_DEVICE_ID_QLOGIC_QLE834X:
 		qlcnic_83xx_register_map(ahw);
-	} else {
+		break;
+	case PCI_DEVICE_ID_QLOGIC_VF_QLE834X:
+		qlcnic_sriov_vf_register_map(ahw);
+		break;
+	default:
 		goto err_out_free_hw_res;
 	}
 
@@ -1904,11 +1914,13 @@ qlcnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	} else if (qlcnic_83xx_check(adapter)) {
 		qlcnic_83xx_check_vf(adapter, ent);
 		adapter->portnum = adapter->ahw->pci_func;
-		err = qlcnic_83xx_init(adapter);
+		err = qlcnic_83xx_init(adapter, pci_using_dac);
 		if (err) {
 			dev_err(&pdev->dev, "%s: failed\n", __func__);
 			goto err_out_free_hw;
 		}
+		if (qlcnic_sriov_vf_check(adapter))
+			return 0;
 	} else {
 		dev_err(&pdev->dev,
 			"%s: failed. Please Reboot\n", __func__);

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

@@ -12,6 +12,9 @@
 #include <linux/types.h>
 #include <linux/pci.h>
 
+extern const u32 qlcnic_83xx_reg_tbl[];
+extern const u32 qlcnic_83xx_ext_reg_tbl[];
+
 struct qlcnic_resources {
 	u16 num_tx_mac_filters;
 	u16 num_rx_ucast_mac_filters;
@@ -40,6 +43,9 @@ struct qlcnic_sriov {
 int qlcnic_sriov_init(struct qlcnic_adapter *, int);
 void qlcnic_sriov_cleanup(struct qlcnic_adapter *);
 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 *);
 
 static inline bool qlcnic_sriov_enable_check(struct qlcnic_adapter *adapter)
 {

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

@@ -7,8 +7,48 @@
 
 #include "qlcnic_sriov.h"
 #include "qlcnic.h"
+#include "qlcnic_83xx_hw.h"
 #include <linux/types.h>
 
+static struct qlcnic_hardware_ops qlcnic_sriov_vf_hw_ops = {
+	.read_crb			= qlcnic_83xx_read_crb,
+	.write_crb			= qlcnic_83xx_write_crb,
+	.read_reg			= qlcnic_83xx_rd_reg_indirect,
+	.write_reg			= qlcnic_83xx_wrt_reg_indirect,
+	.get_mac_address		= qlcnic_83xx_get_mac_address,
+	.setup_intr			= qlcnic_83xx_setup_intr,
+	.alloc_mbx_args			= qlcnic_83xx_alloc_mbx_args,
+	.get_func_no			= qlcnic_83xx_get_func_no,
+	.api_lock			= qlcnic_83xx_cam_lock,
+	.api_unlock			= qlcnic_83xx_cam_unlock,
+	.process_lb_rcv_ring_diag	= qlcnic_83xx_process_rcv_ring_diag,
+	.create_rx_ctx			= qlcnic_83xx_create_rx_ctx,
+	.create_tx_ctx			= qlcnic_83xx_create_tx_ctx,
+	.setup_link_event		= qlcnic_83xx_setup_link_event,
+	.get_nic_info			= qlcnic_83xx_get_nic_info,
+	.get_pci_info			= qlcnic_83xx_get_pci_info,
+	.set_nic_info			= qlcnic_83xx_set_nic_info,
+	.change_macvlan			= qlcnic_83xx_sre_macaddr_change,
+	.napi_enable			= qlcnic_83xx_napi_enable,
+	.napi_disable			= qlcnic_83xx_napi_disable,
+	.config_intr_coal		= qlcnic_83xx_config_intr_coal,
+	.config_rss			= qlcnic_83xx_config_rss,
+	.config_hw_lro			= qlcnic_83xx_config_hw_lro,
+	.config_promisc_mode		= qlcnic_83xx_nic_set_promisc,
+	.change_l2_filter		= qlcnic_83xx_change_l2_filter,
+	.get_board_info			= qlcnic_83xx_get_port_info,
+};
+
+static struct qlcnic_nic_template qlcnic_sriov_vf_ops = {
+	.config_bridged_mode	= qlcnic_config_bridged_mode,
+	.config_led		= qlcnic_config_led,
+	.cancel_idc_work        = qlcnic_83xx_idc_exit,
+	.napi_add		= qlcnic_83xx_napi_add,
+	.napi_del		= qlcnic_83xx_napi_del,
+	.config_ipaddr		= qlcnic_83xx_config_ipaddr,
+	.clear_legacy_intr	= qlcnic_83xx_clear_legacy_intr,
+};
+
 int qlcnic_sriov_init(struct qlcnic_adapter *adapter, int num_vfs)
 {
 	struct qlcnic_sriov *sriov;
@@ -33,8 +73,102 @@ void __qlcnic_sriov_cleanup(struct qlcnic_adapter *adapter)
 	kfree(adapter->ahw->sriov);
 }
 
+static void qlcnic_sriov_vf_cleanup(struct qlcnic_adapter *adapter)
+{
+	__qlcnic_sriov_cleanup(adapter);
+}
+
 void qlcnic_sriov_cleanup(struct qlcnic_adapter *adapter)
 {
 	if (qlcnic_sriov_pf_check(adapter))
 		qlcnic_sriov_pf_cleanup(adapter);
+
+	if (qlcnic_sriov_vf_check(adapter))
+		qlcnic_sriov_vf_cleanup(adapter);
+}
+
+static int qlcnic_sriov_setup_vf(struct qlcnic_adapter *adapter,
+				 int pci_using_dac)
+{
+	int err;
+
+	if (!qlcnic_use_msi_x && !!qlcnic_use_msi)
+		dev_warn(&adapter->pdev->dev,
+			 "83xx adapter do not support MSI interrupts\n");
+
+	err = qlcnic_setup_intr(adapter, 1);
+	if (err) {
+		dev_err(&adapter->pdev->dev, "Failed to setup interrupt\n");
+		goto err_out_disable_msi;
+	}
+
+	err = qlcnic_83xx_setup_mbx_intr(adapter);
+	if (err)
+		goto err_out_disable_msi;
+
+	err = qlcnic_sriov_init(adapter, 1);
+	if (err)
+		goto err_out_disable_mbx_intr;
+
+	err = qlcnic_setup_netdev(adapter, adapter->netdev, pci_using_dac);
+	if (err)
+		goto err_out_cleanup_sriov;
+
+	pci_set_drvdata(adapter->pdev, adapter);
+	dev_info(&adapter->pdev->dev, "%s: XGbE port initialized\n",
+		 adapter->netdev->name);
+	return 0;
+
+err_out_cleanup_sriov:
+	__qlcnic_sriov_cleanup(adapter);
+
+err_out_disable_mbx_intr:
+	qlcnic_83xx_free_mbx_intr(adapter);
+
+err_out_disable_msi:
+	qlcnic_teardown_intr(adapter);
+	return err;
+}
+
+int qlcnic_sriov_vf_init(struct qlcnic_adapter *adapter, int pci_using_dac)
+{
+	struct qlcnic_hardware_context *ahw = adapter->ahw;
+
+	spin_lock_init(&ahw->mbx_lock);
+	set_bit(QLC_83XX_MBX_READY, &adapter->ahw->idc.status);
+	ahw->msix_supported = 1;
+
+	if (qlcnic_sriov_setup_vf(adapter, pci_using_dac))
+		return -EIO;
+
+	if (qlcnic_read_mac_addr(adapter))
+		dev_warn(&adapter->pdev->dev, "failed to read mac addr\n");
+
+	set_bit(QLC_83XX_MODULE_LOADED, &adapter->ahw->idc.status);
+	adapter->ahw->idc.delay = QLC_83XX_IDC_FW_POLL_DELAY;
+	adapter->ahw->reset_context = 0;
+	adapter->fw_fail_cnt = 0;
+	clear_bit(__QLCNIC_RESETTING, &adapter->state);
+	adapter->need_fw_reset = 0;
+	return 0;
+}
+
+void qlcnic_sriov_vf_set_ops(struct qlcnic_adapter *adapter)
+{
+	struct qlcnic_hardware_context *ahw = adapter->ahw;
+
+	ahw->op_mode = QLCNIC_SRIOV_VF_FUNC;
+	dev_info(&adapter->pdev->dev,
+		 "HAL Version: %d Non Privileged SRIOV function\n",
+		 ahw->fw_hal_version);
+	adapter->nic_ops = &qlcnic_sriov_vf_ops;
+	set_bit(__QLCNIC_SRIOV_ENABLE, &adapter->state);
+	return;
+}
+
+void qlcnic_sriov_vf_register_map(struct qlcnic_hardware_context *ahw)
+{
+	ahw->hw_ops		= &qlcnic_sriov_vf_hw_ops;
+	ahw->reg_tbl		= (u32 *)qlcnic_83xx_reg_tbl;
+	ahw->ext_reg_tbl	= (u32 *)qlcnic_83xx_ext_reg_tbl;
 }