Merge branch 'be2net-error-recovery-and-bug-fixes'

Sriharsha Basavapatna says:

====================
be2net: patch-set

The following patch set contains an error recovery feature and a few
bug fixes. Please consider applying this to the net-next tree. Thanks.

Patch-1 Supports HW error recovery in Skyhawk/BEx adapters
Patch-2 Fixes driver unload to issue function reset FW command
Patch-3 Avoids issuing GET_EXT_FAT_CAPABILITIES command for VFs
Patch-4 Avoids redundant addition of mac address in HW
Patch-5 Fixes mac address collision in some configurations
Patch-6 Updates driver version
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/emulex/benet/be.h

@@ -37,7 +37,7 @@
 #include "be_hw.h"
 #include "be_roce.h"
 
-#define DRV_VER			"11.0.0.0"
+#define DRV_VER			"11.1.0.0"
 #define DRV_NAME		"be2net"
 #define BE_NAME			"Emulex BladeEngine2"
 #define BE3_NAME		"Emulex BladeEngine3"
@@ -399,13 +399,13 @@ enum vf_state {
 #define BE_FLAGS_PHY_MISCONFIGURED		BIT(10)
 #define BE_FLAGS_ERR_DETECTION_SCHEDULED	BIT(11)
 #define BE_FLAGS_OS2BMC				BIT(12)
+#define BE_FLAGS_TRY_RECOVERY			BIT(13)
 
 #define BE_UC_PMAC_COUNT			30
 #define BE_VF_UC_PMAC_COUNT			2
 
 #define MAX_ERR_RECOVERY_RETRY_COUNT		3
 #define ERR_DETECTION_DELAY			1000
-#define ERR_RECOVERY_RETRY_DELAY		30000
 
 /* Ethtool set_dump flags */
 #define LANCER_INITIATE_FW_DUMP			0x1
@@ -512,6 +512,66 @@ struct be_eth_addr {
 	unsigned char mac[ETH_ALEN];
 };
 
+#define BE_SEC	1000			/* in msec */
+#define BE_MIN	(60 * BE_SEC)		/* in msec */
+#define BE_HOUR	(60 * BE_MIN)		/* in msec */
+
+#define ERR_RECOVERY_MAX_RETRY_COUNT		3
+#define ERR_RECOVERY_DETECTION_DELAY		BE_SEC
+#define ERR_RECOVERY_RETRY_DELAY		(30 * BE_SEC)
+
+/* UE-detection-duration in BEx/Skyhawk:
+ * All PFs must wait for this duration after they detect UE before reading
+ * SLIPORT_SEMAPHORE register. At the end of this duration, the Firmware
+ * guarantees that the SLIPORT_SEMAPHORE register is updated to indicate
+ * if the UE is recoverable.
+ */
+#define ERR_RECOVERY_UE_DETECT_DURATION			BE_SEC
+
+/* Initial idle time (in msec) to elapse after driver load,
+ * before UE recovery is allowed.
+ */
+#define ERR_IDLE_HR			24
+#define ERR_RECOVERY_IDLE_TIME		(ERR_IDLE_HR * BE_HOUR)
+
+/* Time interval (in msec) after which UE recovery can be repeated */
+#define ERR_INTERVAL_HR			72
+#define ERR_RECOVERY_INTERVAL		(ERR_INTERVAL_HR * BE_HOUR)
+
+/* BEx/SH UE recovery state machine */
+enum {
+	ERR_RECOVERY_ST_NONE = 0,		/* No Recovery */
+	ERR_RECOVERY_ST_DETECT = 1,		/* UE detection duration */
+	ERR_RECOVERY_ST_RESET = 2,		/* Reset Phase (PF0 only) */
+	ERR_RECOVERY_ST_PRE_POLL = 3,		/* Pre-Poll Phase (all PFs) */
+	ERR_RECOVERY_ST_REINIT = 4		/* Re-initialize Phase */
+};
+
+struct be_error_recovery {
+	/* Lancer error recovery variables */
+	u8 recovery_retries;
+
+	/* BEx/Skyhawk error recovery variables */
+	u8 recovery_state;
+	u16 ue_to_reset_time;		/* Time after UE, to soft reset
+					 * the chip - PF0 only
+					 */
+	u16 ue_to_poll_time;		/* Time after UE, to Restart Polling
+					 * of SLIPORT_SEMAPHORE reg
+					 */
+	u16 last_err_code;
+	bool recovery_supported;
+	unsigned long probe_time;
+	unsigned long last_recovery_time;
+
+	/* Common to both Lancer & BEx/SH error recovery */
+	u32 resched_delay;
+	struct delayed_work err_detection_work;
+};
+
+/* Ethtool priv_flags */
+#define	BE_DISABLE_TPE_RECOVERY	0x1
+
 struct be_adapter {
 	struct pci_dev *pdev;
 	struct net_device *netdev;
@@ -560,7 +620,6 @@ struct be_adapter {
 	struct delayed_work work;
 	u16 work_counter;
 
-	struct delayed_work be_err_detection_work;
 	u8 recovery_retries;
 	u8 err_flags;
 	bool pcicfg_mapped;	/* pcicfg obtained via pci_iomap() */
@@ -634,6 +693,9 @@ struct be_adapter {
 	u32 fat_dump_len;
 	u16 serial_num[CNTL_SERIAL_NUM_WORDS];
 	u8 phy_state; /* state of sfp optics (functional, faulted, etc.,) */
+	u8 dev_mac[ETH_ALEN];
+	u32 priv_flags; /* ethtool get/set_priv_flags() */
+	struct be_error_recovery error_recovery;
 };
 
 /* Used for defered FW config cmds. Add fields to this struct as reqd */
@@ -867,6 +929,9 @@ static inline bool is_ipv4_pkt(struct sk_buff *skb)
 	return skb->protocol == htons(ETH_P_IP) && ip_hdr(skb)->version == 4;
 }
 
+#define be_error_recovering(adapter)	\
+		(adapter->flags & BE_FLAGS_TRY_RECOVERY)
+
 #define BE_ERROR_EEH		1
 #define BE_ERROR_UE		BIT(1)
 #define BE_ERROR_FW		BIT(2)

drivers/net/ethernet/emulex/benet/be_cmds.c

@@ -92,6 +92,11 @@ static struct be_cmd_priv_map cmd_priv_map[] = {
 		CMD_SUBSYSTEM_COMMON,
 		BE_PRIV_DEVCFG | BE_PRIV_VHADM
 	},
+	{
+		OPCODE_COMMON_GET_EXT_FAT_CAPABILITIES,
+		CMD_SUBSYSTEM_COMMON,
+		BE_PRIV_DEVCFG
+	}
 };
 
 static bool be_cmd_allowed(struct be_adapter *adapter, u8 opcode, u8 subsystem)
@@ -705,7 +710,7 @@ static int be_mbox_notify_wait(struct be_adapter *adapter)
 	return 0;
 }
 
-static u16 be_POST_stage_get(struct be_adapter *adapter)
+u16 be_POST_stage_get(struct be_adapter *adapter)
 {
 	u32 sem;
 
@@ -4127,6 +4132,10 @@ int be_cmd_get_ext_fat_capabilites(struct be_adapter *adapter,
 	struct be_cmd_req_get_ext_fat_caps *req;
 	int status;
 
+	if (!be_cmd_allowed(adapter, OPCODE_COMMON_GET_EXT_FAT_CAPABILITIES,
+			    CMD_SUBSYSTEM_COMMON))
+		return -EPERM;
+
 	if (mutex_lock_interruptible(&adapter->mbox_lock))
 		return -1;
 
@@ -4138,7 +4147,7 @@ int be_cmd_get_ext_fat_capabilites(struct be_adapter *adapter,
 
 	req = cmd->va;
 	be_wrb_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_COMMON,
-			       OPCODE_COMMON_GET_EXT_FAT_CAPABILITES,
+			       OPCODE_COMMON_GET_EXT_FAT_CAPABILITIES,
 			       cmd->size, wrb, cmd);
 	req->parameter_type = cpu_to_le32(1);
 
@@ -4167,7 +4176,7 @@ int be_cmd_set_ext_fat_capabilites(struct be_adapter *adapter,
 	req = cmd->va;
 	memcpy(&req->set_params, configs, sizeof(struct be_fat_conf_params));
 	be_wrb_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_COMMON,
-			       OPCODE_COMMON_SET_EXT_FAT_CAPABILITES,
+			       OPCODE_COMMON_SET_EXT_FAT_CAPABILITIES,
 			       cmd->size, wrb, cmd);
 
 	status = be_mcc_notify_wait(adapter);
@@ -4954,6 +4963,57 @@ int be_cmd_set_logical_link_config(struct be_adapter *adapter,
 							  1, domain);
 	return status;
 }
+
+int be_cmd_set_features(struct be_adapter *adapter)
+{
+	struct be_cmd_resp_set_features *resp;
+	struct be_cmd_req_set_features *req;
+	struct be_mcc_wrb *wrb;
+	int status;
+
+	if (mutex_lock_interruptible(&adapter->mcc_lock))
+		return -1;
+
+	wrb = wrb_from_mccq(adapter);
+	if (!wrb) {
+		status = -EBUSY;
+		goto err;
+	}
+
+	req = embedded_payload(wrb);
+
+	be_wrb_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_COMMON,
+			       OPCODE_COMMON_SET_FEATURES,
+			       sizeof(*req), wrb, NULL);
+
+	req->features = cpu_to_le32(BE_FEATURE_UE_RECOVERY);
+	req->parameter_len = cpu_to_le32(sizeof(struct be_req_ue_recovery));
+	req->parameter.req.uer = cpu_to_le32(BE_UE_RECOVERY_UER_MASK);
+
+	status = be_mcc_notify_wait(adapter);
+	if (status)
+		goto err;
+
+	resp = embedded_payload(wrb);
+
+	adapter->error_recovery.ue_to_poll_time =
+		le16_to_cpu(resp->parameter.resp.ue2rp);
+	adapter->error_recovery.ue_to_reset_time =
+		le16_to_cpu(resp->parameter.resp.ue2sr);
+	adapter->error_recovery.recovery_supported = true;
+err:
+	/* Checking "MCC_STATUS_INVALID_LENGTH" for SKH as FW
+	 * returns this error in older firmware versions
+	 */
+	if (base_status(status) == MCC_STATUS_ILLEGAL_REQUEST ||
+	    base_status(status) == MCC_STATUS_INVALID_LENGTH)
+		dev_info(&adapter->pdev->dev,
+			 "Adapter does not support HW error recovery\n");
+
+	mutex_unlock(&adapter->mcc_lock);
+	return status;
+}
+
 int be_roce_mcc_cmd(void *netdev_handle, void *wrb_payload,
 		    int wrb_payload_size, u16 *cmd_status, u16 *ext_status)
 {

drivers/net/ethernet/emulex/benet/be_cmds.h

@@ -58,7 +58,8 @@ enum mcc_base_status {
 	MCC_STATUS_INSUFFICIENT_BUFFER = 4,
 	MCC_STATUS_UNAUTHORIZED_REQUEST = 5,
 	MCC_STATUS_NOT_SUPPORTED = 66,
-	MCC_STATUS_FEATURE_NOT_SUPPORTED = 68
+	MCC_STATUS_FEATURE_NOT_SUPPORTED = 68,
+	MCC_STATUS_INVALID_LENGTH = 116
 };
 
 /* Additional status */
@@ -294,8 +295,8 @@ struct be_mcc_mailbox {
 #define OPCODE_COMMON_GET_PHY_DETAILS			102
 #define OPCODE_COMMON_SET_DRIVER_FUNCTION_CAP		103
 #define OPCODE_COMMON_GET_CNTL_ADDITIONAL_ATTRIBUTES	121
-#define OPCODE_COMMON_GET_EXT_FAT_CAPABILITES		125
-#define OPCODE_COMMON_SET_EXT_FAT_CAPABILITES		126
+#define OPCODE_COMMON_GET_EXT_FAT_CAPABILITIES		125
+#define OPCODE_COMMON_SET_EXT_FAT_CAPABILITIES		126
 #define OPCODE_COMMON_GET_MAC_LIST			147
 #define OPCODE_COMMON_SET_MAC_LIST			148
 #define OPCODE_COMMON_GET_HSW_CONFIG			152
@@ -308,6 +309,7 @@ struct be_mcc_mailbox {
 #define OPCODE_COMMON_READ_OBJECT			171
 #define OPCODE_COMMON_WRITE_OBJECT			172
 #define OPCODE_COMMON_DELETE_OBJECT			174
+#define OPCODE_COMMON_SET_FEATURES			191
 #define OPCODE_COMMON_MANAGE_IFACE_FILTERS		193
 #define OPCODE_COMMON_GET_IFACE_LIST			194
 #define OPCODE_COMMON_ENABLE_DISABLE_VF			196
@@ -2315,6 +2317,41 @@ struct be_cmd_resp_get_iface_list {
 	struct be_if_desc if_desc;
 };
 
+/************** Set Features *******************/
+#define	BE_FEATURE_UE_RECOVERY		0x10
+#define	BE_UE_RECOVERY_UER_MASK		0x1
+
+struct be_req_ue_recovery {
+	u32	uer;
+	u32	rsvd;
+};
+
+struct be_cmd_req_set_features {
+	struct be_cmd_req_hdr hdr;
+	u32 features;
+	u32 parameter_len;
+	union {
+		struct be_req_ue_recovery req;
+		u32 rsvd[2];
+	} parameter;
+};
+
+struct be_resp_ue_recovery {
+	u32 uer;
+	u16 ue2rp;
+	u16 ue2sr;
+};
+
+struct be_cmd_resp_set_features {
+	struct be_cmd_resp_hdr hdr;
+	u32 features;
+	u32 parameter_len;
+	union {
+		struct be_resp_ue_recovery resp;
+		u32 rsvd[2];
+	} parameter;
+};
+
 /*************** Set logical link ********************/
 #define PLINK_ENABLE            BIT(0)
 #define PLINK_TRACK             BIT(8)
@@ -2343,6 +2380,7 @@ struct be_cmd_req_manage_iface_filters {
 	u32 cap_control_flags;
 } __packed;
 
+u16 be_POST_stage_get(struct be_adapter *adapter);
 int be_pci_fnum_get(struct be_adapter *adapter);
 int be_fw_wait_ready(struct be_adapter *adapter);
 int be_cmd_mac_addr_query(struct be_adapter *adapter, u8 *mac_addr,
@@ -2470,3 +2508,4 @@ int be_cmd_manage_iface(struct be_adapter *adapter, u32 iface, u8 op);
 int be_cmd_set_sriov_config(struct be_adapter *adapter,
 			    struct be_resources res, u16 num_vfs,
 			    struct be_resources *vft_res);
+int be_cmd_set_features(struct be_adapter *adapter);

drivers/net/ethernet/emulex/benet/be_ethtool.c

@@ -421,6 +421,10 @@ static void be_get_ethtool_stats(struct net_device *netdev,
 	}
 }
 
+static const char be_priv_flags[][ETH_GSTRING_LEN] = {
+	"disable-tpe-recovery"
+};
+
 static void be_get_stat_strings(struct net_device *netdev, uint32_t stringset,
 				uint8_t *data)
 {
@@ -454,6 +458,10 @@ static void be_get_stat_strings(struct net_device *netdev, uint32_t stringset,
 			data += ETH_GSTRING_LEN;
 		}
 		break;
+	case ETH_SS_PRIV_FLAGS:
+		for (i = 0; i < ARRAY_SIZE(be_priv_flags); i++)
+			strcpy(data + i * ETH_GSTRING_LEN, be_priv_flags[i]);
+		break;
 	}
 }
 
@@ -468,6 +476,8 @@ static int be_get_sset_count(struct net_device *netdev, int stringset)
 		return ETHTOOL_STATS_NUM +
 			adapter->num_rx_qs * ETHTOOL_RXSTATS_NUM +
 			adapter->num_tx_qs * ETHTOOL_TXSTATS_NUM;
+	case ETH_SS_PRIV_FLAGS:
+		return ARRAY_SIZE(be_priv_flags);
 	default:
 		return -EINVAL;
 	}
@@ -1360,6 +1370,34 @@ static int be_get_module_eeprom(struct net_device *netdev,
 	return be_cmd_status(status);
 }
 
+static u32 be_get_priv_flags(struct net_device *netdev)
+{
+	struct be_adapter *adapter = netdev_priv(netdev);
+
+	return adapter->priv_flags;
+}
+
+static int be_set_priv_flags(struct net_device *netdev, u32 flags)
+{
+	struct be_adapter *adapter = netdev_priv(netdev);
+	bool tpe_old = !!(adapter->priv_flags & BE_DISABLE_TPE_RECOVERY);
+	bool tpe_new = !!(flags & BE_DISABLE_TPE_RECOVERY);
+
+	if (tpe_old != tpe_new) {
+		if (tpe_new) {
+			adapter->priv_flags |= BE_DISABLE_TPE_RECOVERY;
+			dev_info(&adapter->pdev->dev,
+				 "HW error recovery is disabled\n");
+		} else {
+			adapter->priv_flags &= ~BE_DISABLE_TPE_RECOVERY;
+			dev_info(&adapter->pdev->dev,
+				 "HW error recovery is enabled\n");
+		}
+	}
+
+	return 0;
+}
+
 const struct ethtool_ops be_ethtool_ops = {
 	.get_settings = be_get_settings,
 	.get_drvinfo = be_get_drvinfo,
@@ -1373,6 +1411,8 @@ const struct ethtool_ops be_ethtool_ops = {
 	.get_ringparam = be_get_ringparam,
 	.get_pauseparam = be_get_pauseparam,
 	.set_pauseparam = be_set_pauseparam,
+	.set_priv_flags = be_set_priv_flags,
+	.get_priv_flags = be_get_priv_flags,
 	.get_strings = be_get_stat_strings,
 	.set_phys_id = be_set_phys_id,
 	.set_dump = be_set_dump,

drivers/net/ethernet/emulex/benet/be_hw.h

@@ -32,18 +32,23 @@
 #define MPU_EP_CONTROL 		0
 
 /********** MPU semphore: used for SH & BE  *************/
+#define SLIPORT_SOFTRESET_OFFSET		0x5c	/* CSR BAR offset */
 #define SLIPORT_SEMAPHORE_OFFSET_BEx		0xac  /* CSR BAR offset */
 #define SLIPORT_SEMAPHORE_OFFSET_SH		0x94  /* PCI-CFG offset */
 #define POST_STAGE_MASK				0x0000FFFF
 #define POST_ERR_MASK				0x1
 #define POST_ERR_SHIFT				31
+#define POST_ERR_RECOVERY_CODE_MASK		0xFFF
+
+/* Soft Reset register masks */
+#define SLIPORT_SOFTRESET_SR_MASK		0x00000080	/* SR bit */
 
 /* MPU semphore POST stage values */
 #define POST_STAGE_AWAITING_HOST_RDY 	0x1 /* FW awaiting goahead from host */
 #define POST_STAGE_HOST_RDY 		0x2 /* Host has given go-ahed to FW */
 #define POST_STAGE_BE_RESET		0x3 /* Host wants to reset chip */
 #define POST_STAGE_ARMFW_RDY		0xc000	/* FW is done with POST */
-
+#define POST_STAGE_RECOVERABLE_ERR	0xE000	/* Recoverable err detected */
 
 /* Lancer SLIPORT registers */
 #define SLIPORT_STATUS_OFFSET		0x404