be2net: adding support for Lancer family of CNAs

Key changes are:
- EQ ids are not assigned consecutively in Lancer. So, fix mapping of MSIx
  vector to EQ-id.
- BAR mapping and some req locations different for Lancer.
- TCP,UDP,IP checksum fields must be compulsorily set in TX wrb for TSO in
  Lancer.
- CEV_IST reg not present in Lancer; so, peek into event queue to check for
  new entries
- cq_create and mcc_create cmd interface is different for Lancer; handle
  accordingly

Signed-off-by: Padmanabh Ratnakar <[email protected]>
Signed-off-by: Sathya Perla <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

Author: Sathya Perla

drivers/net/benet/be.h

@@ -38,22 +38,27 @@
 #define BE_NAME			"ServerEngines BladeEngine2 10Gbps NIC"
 #define BE3_NAME		"ServerEngines BladeEngine3 10Gbps NIC"
 #define OC_NAME			"Emulex OneConnect 10Gbps NIC"
-#define OC_NAME1		"Emulex OneConnect 10Gbps NIC (be3)"
+#define OC_NAME_BE		OC_NAME	"(be3)"
+#define OC_NAME_LANCER		OC_NAME "(Lancer)"
 #define DRV_DESC		"ServerEngines BladeEngine 10Gbps NIC Driver"
 
 #define BE_VENDOR_ID 		0x19a2
+#define EMULEX_VENDOR_ID	0x10df
 #define BE_DEVICE_ID1		0x211
 #define BE_DEVICE_ID2		0x221
-#define OC_DEVICE_ID1		0x700
-#define OC_DEVICE_ID2		0x710
+#define OC_DEVICE_ID1		0x700	/* Device Id for BE2 cards */
+#define OC_DEVICE_ID2		0x710	/* Device Id for BE3 cards */
+#define OC_DEVICE_ID3		0xe220	/* Device id for Lancer cards */
 
 static inline char *nic_name(struct pci_dev *pdev)
 {
 	switch (pdev->device) {
 	case OC_DEVICE_ID1:
 		return OC_NAME;
 	case OC_DEVICE_ID2:
-		return OC_NAME1;
+		return OC_NAME_BE;
+	case OC_DEVICE_ID3:
+		return OC_NAME_LANCER;
 	case BE_DEVICE_ID2:
 		return BE3_NAME;
 	default:
@@ -149,6 +154,7 @@ struct be_eq_obj {
 	u16 min_eqd;		/* in usecs */
 	u16 max_eqd;		/* in usecs */
 	u16 cur_eqd;		/* in usecs */
+	u8  msix_vec_idx;
 
 	struct napi_struct napi;
 };
@@ -260,6 +266,8 @@ struct be_adapter {
 	u32 num_rx_qs;
 	u32 big_page_size;	/* Compounded page size shared by rx wrbs */
 
+	u8 msix_vec_next_idx;
+
 	struct vlan_group *vlan_grp;
 	u16 vlans_added;
 	u16 max_vlans;	/* Number of vlans supported */
@@ -299,8 +307,8 @@ struct be_adapter {
 
 	bool sriov_enabled;
 	struct be_vf_cfg vf_cfg[BE_MAX_VF];
-	u8 base_eq_id;
 	u8 is_virtfn;
+	u32 sli_family;
 };
 
 #define be_physfn(adapter) (!adapter->is_virtfn)
@@ -309,6 +317,8 @@ struct be_adapter {
 #define BE_GEN2 2
 #define BE_GEN3 3
 
+#define lancer_chip(adapter)		(adapter->pdev->device == OC_DEVICE_ID3)
+
 extern const struct ethtool_ops be_ethtool_ops;
 
 #define tx_stats(adapter)		(&adapter->tx_stats)
@@ -416,10 +426,17 @@ static inline u8 is_udp_pkt(struct sk_buff *skb)
 static inline void be_check_sriov_fn_type(struct be_adapter *adapter)
 {
 	u8 data;
-
-	pci_write_config_byte(adapter->pdev, 0xFE, 0xAA);
-	pci_read_config_byte(adapter->pdev, 0xFE, &data);
-	adapter->is_virtfn = (data != 0xAA);
+	u32 sli_intf;
+
+	if (lancer_chip(adapter)) {
+		pci_read_config_dword(adapter->pdev, SLI_INTF_REG_OFFSET,
+								&sli_intf);
+		adapter->is_virtfn = (sli_intf & SLI_INTF_FT_MASK) ? 1 : 0;
+	} else {
+		pci_write_config_byte(adapter->pdev, 0xFE, 0xAA);
+		pci_read_config_byte(adapter->pdev, 0xFE, &data);
+		adapter->is_virtfn = (data != 0xAA);
+	}
 }
 
 static inline void be_vf_eth_addr_generate(struct be_adapter *adapter, u8 *mac)

drivers/net/benet/be_cmds.c

@@ -323,7 +323,12 @@ static int be_mbox_notify_wait(struct be_adapter *adapter)
 
 static int be_POST_stage_get(struct be_adapter *adapter, u16 *stage)
 {
-	u32 sem = ioread32(adapter->csr + MPU_EP_SEMAPHORE_OFFSET);
+	u32 sem;
+
+	if (lancer_chip(adapter))
+		sem  = ioread32(adapter->db + MPU_EP_SEMAPHORE_IF_TYPE2_OFFSET);
+	else
+		sem  = ioread32(adapter->csr + MPU_EP_SEMAPHORE_OFFSET);
 
 	*stage = sem & EP_SEMAPHORE_POST_STAGE_MASK;
 	if ((sem >> EP_SEMAPHORE_POST_ERR_SHIFT) & EP_SEMAPHORE_POST_ERR_MASK)
@@ -465,14 +470,25 @@ int be_cmd_fw_init(struct be_adapter *adapter)
 	spin_lock(&adapter->mbox_lock);
 
 	wrb = (u8 *)wrb_from_mbox(adapter);
-	*wrb++ = 0xFF;
-	*wrb++ = 0x12;
-	*wrb++ = 0x34;
-	*wrb++ = 0xFF;
-	*wrb++ = 0xFF;
-	*wrb++ = 0x56;
-	*wrb++ = 0x78;
-	*wrb = 0xFF;
+	if (lancer_chip(adapter)) {
+		*wrb++ = 0xFF;
+		*wrb++ = 0x34;
+		*wrb++ = 0x12;
+		*wrb++ = 0xFF;
+		*wrb++ = 0xFF;
+		*wrb++ = 0x78;
+		*wrb++ = 0x56;
+		*wrb = 0xFF;
+	} else {
+		*wrb++ = 0xFF;
+		*wrb++ = 0x12;
+		*wrb++ = 0x34;
+		*wrb++ = 0xFF;
+		*wrb++ = 0xFF;
+		*wrb++ = 0x56;
+		*wrb++ = 0x78;
+		*wrb = 0xFF;
+	}
 
 	status = be_mbox_notify_wait(adapter);
 
@@ -680,16 +696,36 @@ int be_cmd_cq_create(struct be_adapter *adapter,
 		OPCODE_COMMON_CQ_CREATE, sizeof(*req));
 
 	req->num_pages =  cpu_to_le16(PAGES_4K_SPANNED(q_mem->va, q_mem->size));
+	if (lancer_chip(adapter)) {
+		req->hdr.version = 1;
+		req->page_size = 1; /* 1 for 4K */
+		AMAP_SET_BITS(struct amap_cq_context_lancer, coalescwm, ctxt,
+								coalesce_wm);
+		AMAP_SET_BITS(struct amap_cq_context_lancer, nodelay, ctxt,
+								no_delay);
+		AMAP_SET_BITS(struct amap_cq_context_lancer, count, ctxt,
+						__ilog2_u32(cq->len/256));
+		AMAP_SET_BITS(struct amap_cq_context_lancer, valid, ctxt, 1);
+		AMAP_SET_BITS(struct amap_cq_context_lancer, eventable,
+								ctxt, 1);
+		AMAP_SET_BITS(struct amap_cq_context_lancer, eqid,
+								ctxt, eq->id);
+		AMAP_SET_BITS(struct amap_cq_context_lancer, armed, ctxt, 1);
+	} else {
+		AMAP_SET_BITS(struct amap_cq_context_be, coalescwm, ctxt,
+								coalesce_wm);
+		AMAP_SET_BITS(struct amap_cq_context_be, nodelay,
+								ctxt, no_delay);
+		AMAP_SET_BITS(struct amap_cq_context_be, count, ctxt,
+						__ilog2_u32(cq->len/256));
+		AMAP_SET_BITS(struct amap_cq_context_be, valid, ctxt, 1);
+		AMAP_SET_BITS(struct amap_cq_context_be, solevent,
+								ctxt, sol_evts);
+		AMAP_SET_BITS(struct amap_cq_context_be, eventable, ctxt, 1);
+		AMAP_SET_BITS(struct amap_cq_context_be, eqid, ctxt, eq->id);
+		AMAP_SET_BITS(struct amap_cq_context_be, armed, ctxt, 1);
+	}
 
-	AMAP_SET_BITS(struct amap_cq_context, coalescwm, ctxt, coalesce_wm);
-	AMAP_SET_BITS(struct amap_cq_context, nodelay, ctxt, no_delay);
-	AMAP_SET_BITS(struct amap_cq_context, count, ctxt,
-			__ilog2_u32(cq->len/256));
-	AMAP_SET_BITS(struct amap_cq_context, valid, ctxt, 1);
-	AMAP_SET_BITS(struct amap_cq_context, solevent, ctxt, sol_evts);
-	AMAP_SET_BITS(struct amap_cq_context, eventable, ctxt, 1);
-	AMAP_SET_BITS(struct amap_cq_context, eqid, ctxt, eq->id);
-	AMAP_SET_BITS(struct amap_cq_context, armed, ctxt, 1);
 	be_dws_cpu_to_le(ctxt, sizeof(req->context));
 
 	be_cmd_page_addrs_prepare(req->pages, ARRAY_SIZE(req->pages), q_mem);
@@ -737,13 +773,27 @@ int be_cmd_mccq_create(struct be_adapter *adapter,
 			OPCODE_COMMON_MCC_CREATE_EXT, sizeof(*req));
 
 	req->num_pages = cpu_to_le16(PAGES_4K_SPANNED(q_mem->va, q_mem->size));
+	if (lancer_chip(adapter)) {
+		req->hdr.version = 1;
+		req->cq_id = cpu_to_le16(cq->id);
+
+		AMAP_SET_BITS(struct amap_mcc_context_lancer, ring_size, ctxt,
+						be_encoded_q_len(mccq->len));
+		AMAP_SET_BITS(struct amap_mcc_context_lancer, valid, ctxt, 1);
+		AMAP_SET_BITS(struct amap_mcc_context_lancer, async_cq_id,
+								ctxt, cq->id);
+		AMAP_SET_BITS(struct amap_mcc_context_lancer, async_cq_valid,
+								 ctxt, 1);
+
+	} else {
+		AMAP_SET_BITS(struct amap_mcc_context_be, valid, ctxt, 1);
+		AMAP_SET_BITS(struct amap_mcc_context_be, ring_size, ctxt,
+						be_encoded_q_len(mccq->len));
+		AMAP_SET_BITS(struct amap_mcc_context_be, cq_id, ctxt, cq->id);
+	}
 
-	AMAP_SET_BITS(struct amap_mcc_context, valid, ctxt, 1);
-	AMAP_SET_BITS(struct amap_mcc_context, ring_size, ctxt,
-		be_encoded_q_len(mccq->len));
-	AMAP_SET_BITS(struct amap_mcc_context, cq_id, ctxt, cq->id);
 	/* Subscribe to Link State and Group 5 Events(bits 1 and 5 set) */
-	req->async_event_bitmap[0] |= 0x00000022;
+	req->async_event_bitmap[0] = cpu_to_le32(0x00000022);
 	be_dws_cpu_to_le(ctxt, sizeof(req->context));
 
 	be_cmd_page_addrs_prepare(req->pages, ARRAY_SIZE(req->pages), q_mem);

drivers/net/benet/be_cmds.h

@@ -309,7 +309,7 @@ struct be_cmd_req_pmac_del {
 /******************** Create CQ ***************************/
 /* Pseudo amap definition in which each bit of the actual structure is defined
  * as a byte: used to calculate offset/shift/mask of each field */
-struct amap_cq_context {
+struct amap_cq_context_be {
 	u8 cidx[11];		/* dword 0*/
 	u8 rsvd0;		/* dword 0*/
 	u8 coalescwm[2];	/* dword 0*/
@@ -332,14 +332,32 @@ struct amap_cq_context {
 	u8 rsvd5[32];		/* dword 3*/
 } __packed;
 
+struct amap_cq_context_lancer {
+	u8 rsvd0[12];		/* dword 0*/
+	u8 coalescwm[2];	/* dword 0*/
+	u8 nodelay;		/* dword 0*/
+	u8 rsvd1[12];		/* dword 0*/
+	u8 count[2];		/* dword 0*/
+	u8 valid;		/* dword 0*/
+	u8 rsvd2;		/* dword 0*/
+	u8 eventable;		/* dword 0*/
+	u8 eqid[16];		/* dword 1*/
+	u8 rsvd3[15];		/* dword 1*/
+	u8 armed;		/* dword 1*/
+	u8 rsvd4[32];		/* dword 2*/
+	u8 rsvd5[32];		/* dword 3*/
+} __packed;
+
 struct be_cmd_req_cq_create {
 	struct be_cmd_req_hdr hdr;
 	u16 num_pages;
-	u16 rsvd0;
-	u8 context[sizeof(struct amap_cq_context) / 8];
+	u8 page_size;
+	u8 rsvd0;
+	u8 context[sizeof(struct amap_cq_context_be) / 8];
 	struct phys_addr pages[8];
 } __packed;
 
+
 struct be_cmd_resp_cq_create {
 	struct be_cmd_resp_hdr hdr;
 	u16 cq_id;
@@ -349,7 +367,7 @@ struct be_cmd_resp_cq_create {
 /******************** Create MCCQ ***************************/
 /* Pseudo amap definition in which each bit of the actual structure is defined
  * as a byte: used to calculate offset/shift/mask of each field */
-struct amap_mcc_context {
+struct amap_mcc_context_be {
 	u8 con_index[14];
 	u8 rsvd0[2];
 	u8 ring_size[4];
@@ -364,12 +382,23 @@ struct amap_mcc_context {
 	u8 rsvd2[32];
 } __packed;
 
+struct amap_mcc_context_lancer {
+	u8 async_cq_id[16];
+	u8 ring_size[4];
+	u8 rsvd0[12];
+	u8 rsvd1[31];
+	u8 valid;
+	u8 async_cq_valid[1];
+	u8 rsvd2[31];
+	u8 rsvd3[32];
+} __packed;
+
 struct be_cmd_req_mcc_create {
 	struct be_cmd_req_hdr hdr;
 	u16 num_pages;
-	u16 rsvd0;
+	u16 cq_id;
 	u32 async_event_bitmap[1];
-	u8 context[sizeof(struct amap_mcc_context) / 8];
+	u8 context[sizeof(struct amap_mcc_context_be) / 8];
 	struct phys_addr pages[8];
 } __packed;
 
@@ -605,6 +634,7 @@ struct be_hw_stats {
 	struct be_rxf_stats rxf;
 	u32 rsvd[48];
 	struct be_erx_stats erx;
+	u32 rsvd1[6];
 };
 
 struct be_cmd_req_get_stats {

drivers/net/benet/be_hw.h

@@ -32,10 +32,12 @@
 #define MPU_EP_CONTROL 		0
 
 /********** MPU semphore ******************/
-#define MPU_EP_SEMAPHORE_OFFSET 	0xac
-#define EP_SEMAPHORE_POST_STAGE_MASK	0x0000FFFF
-#define EP_SEMAPHORE_POST_ERR_MASK	0x1
-#define EP_SEMAPHORE_POST_ERR_SHIFT	31
+#define MPU_EP_SEMAPHORE_OFFSET		0xac
+#define MPU_EP_SEMAPHORE_IF_TYPE2_OFFSET	0x400
+#define EP_SEMAPHORE_POST_STAGE_MASK		0x0000FFFF
+#define EP_SEMAPHORE_POST_ERR_MASK		0x1
+#define EP_SEMAPHORE_POST_ERR_SHIFT		31
+
 /* 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 */
@@ -66,13 +68,38 @@
 #define PCICFG_UE_STATUS_LOW_MASK		0xA8
 #define PCICFG_UE_STATUS_HI_MASK		0xAC
 
+/******** SLI_INTF ***********************/
+#define SLI_INTF_REG_OFFSET			0x58
+#define SLI_INTF_VALID_MASK			0xE0000000
+#define SLI_INTF_VALID				0xC0000000
+#define SLI_INTF_HINT2_MASK			0x1F000000
+#define SLI_INTF_HINT2_SHIFT			24
+#define SLI_INTF_HINT1_MASK			0x00FF0000
+#define SLI_INTF_HINT1_SHIFT			16
+#define SLI_INTF_FAMILY_MASK			0x00000F00
+#define SLI_INTF_FAMILY_SHIFT			8
+#define SLI_INTF_IF_TYPE_MASK			0x0000F000
+#define SLI_INTF_IF_TYPE_SHIFT			12
+#define SLI_INTF_REV_MASK			0x000000F0
+#define SLI_INTF_REV_SHIFT			4
+#define SLI_INTF_FT_MASK			0x00000001
+
+
+/* SLI family */
+#define BE_SLI_FAMILY		0x0
+#define LANCER_A0_SLI_FAMILY	0xA
+
+
 /********* ISR0 Register offset **********/
 #define CEV_ISR0_OFFSET 			0xC18
 #define CEV_ISR_SIZE				4
 
 /********* Event Q door bell *************/
 #define DB_EQ_OFFSET			DB_CQ_OFFSET
 #define DB_EQ_RING_ID_MASK		0x1FF	/* bits 0 - 8 */
+#define DB_EQ_RING_ID_EXT_MASK		0x3e00  /* bits 9-13 */
+#define DB_EQ_RING_ID_EXT_MASK_SHIFT	(2) /* qid bits 9-13 placing at 11-15 */
+
 /* Clear the interrupt for this eq */
 #define DB_EQ_CLR_SHIFT			(9)	/* bit 9 */
 /* Must be 1 */
@@ -85,6 +112,10 @@
 /********* Compl Q door bell *************/
 #define DB_CQ_OFFSET 			0x120
 #define DB_CQ_RING_ID_MASK		0x3FF	/* bits 0 - 9 */
+#define DB_CQ_RING_ID_EXT_MASK		0x7C00	/* bits 10-14 */
+#define DB_CQ_RING_ID_EXT_MASK_SHIFT	(1)	/* qid bits 10-14
+						 placing at 11-15 */
+
 /* Number of event entries processed */
 #define DB_CQ_NUM_POPPED_SHIFT		(16) 	/* bits 16 - 28 */
 /* Rearm bit */