Merge branch 'cxgb4-next'

Hariprasad Shenai says:

====================
cxgb4/cxgb4vf: Adds support for Chelsio T6 adapter

This patch series adds the following:
Adds NIC driver support for T6 adapter
Adds vNIC driver support for T6 adapter

This patch series has been created against net-next tree and includes
patches on cxgb4 and cxgb4vf driver.

We have included all the maintainers of respective drivers. Kindly review
the change and let us know in case of any review comments.

Thanks

V2:
 Fixed compilation issue, when CHELSIO_T4_FCOE is set
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

13 files changed, 932 insertions, 172 deletions

diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h b/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h
index 15cca3013de2..4d3a8c20eb12 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h
@@ -224,7 +224,6 @@ struct sge_params {
 };
 
 struct tp_params {
-	unsigned int ntxchan;        /* # of Tx channels */
 	unsigned int tre;            /* log2 of core clocks per TP tick */
 	unsigned int la_mask;        /* what events are recorded by TP LA */
 	unsigned short tx_modq_map;  /* TX modulation scheduler queue to */
@@ -273,6 +272,7 @@ struct pci_params {
 
 #define CHELSIO_T4		0x4
 #define CHELSIO_T5		0x5
+#define CHELSIO_T6		0x6
 
 enum chip_type {
 	T4_A1 = CHELSIO_CHIP_CODE(CHELSIO_T4, 1),
@@ -284,6 +284,10 @@ enum chip_type {
 	T5_A1 = CHELSIO_CHIP_CODE(CHELSIO_T5, 1),
 	T5_FIRST_REV	= T5_A0,
 	T5_LAST_REV	= T5_A1,
+
+	T6_A0 = CHELSIO_CHIP_CODE(CHELSIO_T6, 0),
+	T6_FIRST_REV    = T6_A0,
+	T6_LAST_REV     = T6_A0,
 };
 
 struct devlog_params {
@@ -292,6 +296,15 @@ struct devlog_params {
 	u32 size;                       /* size of log */
 };
 
+/* Stores chip specific parameters */
+struct arch_specific_params {
+	u8 nchan;
+	u16 mps_rplc_size;
+	u16 vfcount;
+	u32 sge_fl_db;
+	u16 mps_tcam_size;
+};
+
 struct adapter_params {
 	struct sge_params sge;
 	struct tp_params  tp;
@@ -317,6 +330,7 @@ struct adapter_params {
 	unsigned char nports;             /* # of ethernet ports */
 	unsigned char portvec;
 	enum chip_type chip;               /* chip code */
+	struct arch_specific_params arch;  /* chip specific params */
 	unsigned char offload;
 
 	unsigned char bypass;
@@ -850,6 +864,11 @@ enum {
 	VLAN_REWRITE
 };
 
+static inline int is_t6(enum chip_type chip)
+{
+	return CHELSIO_CHIP_VERSION(chip) == CHELSIO_T6;
+}
+
 static inline int is_t5(enum chip_type chip)
 {
 	return CHELSIO_CHIP_VERSION(chip) == CHELSIO_T5;
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c
index 7cb423745974..3719807efddd 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c
@@ -1084,41 +1084,89 @@ static inline void tcamxy2valmask(u64 x, u64 y, u8 *addr, u64 *mask)
 
 static int mps_tcam_show(struct seq_file *seq, void *v)
 {
-	if (v == SEQ_START_TOKEN)
-		seq_puts(seq, "Idx  Ethernet address     Mask     Vld Ports PF"
-			 "  VF              Replication             "
-			 "P0 P1 P2 P3  ML\n");
-	else {
+	struct adapter *adap = seq->private;
+	unsigned int chip_ver = CHELSIO_CHIP_VERSION(adap->params.chip);
+
+	if (v == SEQ_START_TOKEN) {
+		if (adap->params.arch.mps_rplc_size > 128)
+			seq_puts(seq, "Idx  Ethernet address     Mask     "
+				 "Vld Ports PF  VF                           "
+				 "Replication                                "
+				 "    P0 P1 P2 P3  ML\n");
+		else
+			seq_puts(seq, "Idx  Ethernet address     Mask     "
+				 "Vld Ports PF  VF              Replication"
+				 "	         P0 P1 P2 P3  ML\n");
+	} else {
 		u64 mask;
 		u8 addr[ETH_ALEN];
-		struct adapter *adap = seq->private;
+		bool replicate;
 		unsigned int idx = (uintptr_t)v - 2;
-		u64 tcamy = t4_read_reg64(adap, MPS_CLS_TCAM_Y_L(idx));
-		u64 tcamx = t4_read_reg64(adap, MPS_CLS_TCAM_X_L(idx));
-		u32 cls_lo = t4_read_reg(adap, MPS_CLS_SRAM_L(idx));
-		u32 cls_hi = t4_read_reg(adap, MPS_CLS_SRAM_H(idx));
-		u32 rplc[4] = {0, 0, 0, 0};
+		u64 tcamy, tcamx, val;
+		u32 cls_lo, cls_hi, ctl;
+		u32 rplc[8] = {0};
+
+		if (chip_ver > CHELSIO_T5) {
+			/* CtlCmdType - 0: Read, 1: Write
+			 * CtlTcamSel - 0: TCAM0, 1: TCAM1
+			 * CtlXYBitSel- 0: Y bit, 1: X bit
+			 */
+
+			/* Read tcamy */
+			ctl = CTLCMDTYPE_V(0) | CTLXYBITSEL_V(0);
+			if (idx < 256)
+				ctl |= CTLTCAMINDEX_V(idx) | CTLTCAMSEL_V(0);
+			else
+				ctl |= CTLTCAMINDEX_V(idx - 256) |
+				       CTLTCAMSEL_V(1);
+			t4_write_reg(adap, MPS_CLS_TCAM_DATA2_CTL_A, ctl);
+			val = t4_read_reg(adap, MPS_CLS_TCAM_DATA1_A);
+			tcamy = DMACH_G(val) << 32;
+			tcamy |= t4_read_reg(adap, MPS_CLS_TCAM_DATA0_A);
+
+			/* Read tcamx. Change the control param */
+			ctl |= CTLXYBITSEL_V(1);
+			t4_write_reg(adap, MPS_CLS_TCAM_DATA2_CTL_A, ctl);
+			val = t4_read_reg(adap, MPS_CLS_TCAM_DATA1_A);
+			tcamx = DMACH_G(val) << 32;
+			tcamx |= t4_read_reg(adap, MPS_CLS_TCAM_DATA0_A);
+		} else {
+			tcamy = t4_read_reg64(adap, MPS_CLS_TCAM_Y_L(idx));
+			tcamx = t4_read_reg64(adap, MPS_CLS_TCAM_X_L(idx));
+		}
+
+		cls_lo = t4_read_reg(adap, MPS_CLS_SRAM_L(idx));
+		cls_hi = t4_read_reg(adap, MPS_CLS_SRAM_H(idx));
 
 		if (tcamx & tcamy) {
 			seq_printf(seq, "%3u         -\n", idx);
 			goto out;
 		}
 
-		if (cls_lo & REPLICATE_F) {
+		rplc[0] = rplc[1] = rplc[2] = rplc[3] = 0;
+		if (chip_ver > CHELSIO_T5)
+			replicate = (cls_lo & T6_REPLICATE_F);
+		else
+			replicate = (cls_lo & REPLICATE_F);
+
+		if (replicate) {
 			struct fw_ldst_cmd ldst_cmd;
 			int ret;
+			struct fw_ldst_mps_rplc mps_rplc;
+			u32 ldst_addrspc;
 
 			memset(&ldst_cmd, 0, sizeof(ldst_cmd));
+			ldst_addrspc =
+				FW_LDST_CMD_ADDRSPACE_V(FW_LDST_ADDRSPC_MPS);
 			ldst_cmd.op_to_addrspace =
 				htonl(FW_CMD_OP_V(FW_LDST_CMD) |
 				      FW_CMD_REQUEST_F |
 				      FW_CMD_READ_F |
-				      FW_LDST_CMD_ADDRSPACE_V(
-					      FW_LDST_ADDRSPC_MPS));
+				      ldst_addrspc);
 			ldst_cmd.cycles_to_len16 = htonl(FW_LEN16(ldst_cmd));
-			ldst_cmd.u.mps.fid_ctl =
+			ldst_cmd.u.mps.rplc.fid_idx =
 				htons(FW_LDST_CMD_FID_V(FW_LDST_MPS_RPLC) |
-				      FW_LDST_CMD_CTL_V(idx));
+				      FW_LDST_CMD_IDX_V(idx));
 			ret = t4_wr_mbox(adap, adap->mbox, &ldst_cmd,
 					 sizeof(ldst_cmd), &ldst_cmd);
 			if (ret)
@@ -1126,30 +1174,69 @@ static int mps_tcam_show(struct seq_file *seq, void *v)
 					 "replication map for idx %d: %d\n",
 					 idx, -ret);
 			else {
-				rplc[0] = ntohl(ldst_cmd.u.mps.rplc31_0);
-				rplc[1] = ntohl(ldst_cmd.u.mps.rplc63_32);
-				rplc[2] = ntohl(ldst_cmd.u.mps.rplc95_64);
-				rplc[3] = ntohl(ldst_cmd.u.mps.rplc127_96);
+				mps_rplc = ldst_cmd.u.mps.rplc;
+				rplc[0] = ntohl(mps_rplc.rplc31_0);
+				rplc[1] = ntohl(mps_rplc.rplc63_32);
+				rplc[2] = ntohl(mps_rplc.rplc95_64);
+				rplc[3] = ntohl(mps_rplc.rplc127_96);
+				if (adap->params.arch.mps_rplc_size > 128) {
+					rplc[4] = ntohl(mps_rplc.rplc159_128);
+					rplc[5] = ntohl(mps_rplc.rplc191_160);
+					rplc[6] = ntohl(mps_rplc.rplc223_192);
+					rplc[7] = ntohl(mps_rplc.rplc255_224);
+				}
 			}
 		}
 
 		tcamxy2valmask(tcamx, tcamy, addr, &mask);
-		seq_printf(seq, "%3u %02x:%02x:%02x:%02x:%02x:%02x %012llx"
-			   "%3c   %#x%4u%4d",
-			   idx, addr[0], addr[1], addr[2], addr[3], addr[4],
-			   addr[5], (unsigned long long)mask,
-			   (cls_lo & SRAM_VLD_F) ? 'Y' : 'N', PORTMAP_G(cls_hi),
-			   PF_G(cls_lo),
-			   (cls_lo & VF_VALID_F) ? VF_G(cls_lo) : -1);
-		if (cls_lo & REPLICATE_F)
-			seq_printf(seq, " %08x %08x %08x %08x",
-				   rplc[3], rplc[2], rplc[1], rplc[0]);
+		if (chip_ver > CHELSIO_T5)
+			seq_printf(seq, "%3u %02x:%02x:%02x:%02x:%02x:%02x "
+				   "%012llx%3c   %#x%4u%4d",
+				   idx, addr[0], addr[1], addr[2], addr[3],
+				   addr[4], addr[5], (unsigned long long)mask,
+				   (cls_lo & T6_SRAM_VLD_F) ? 'Y' : 'N',
+				   PORTMAP_G(cls_hi),
+				   T6_PF_G(cls_lo),
+				   (cls_lo & T6_VF_VALID_F) ?
+				   T6_VF_G(cls_lo) : -1);
 		else
-			seq_printf(seq, "%36c", ' ');
-		seq_printf(seq, "%4u%3u%3u%3u %#x\n",
-			   SRAM_PRIO0_G(cls_lo), SRAM_PRIO1_G(cls_lo),
-			   SRAM_PRIO2_G(cls_lo), SRAM_PRIO3_G(cls_lo),
-			   (cls_lo >> MULTILISTEN0_S) & 0xf);
+			seq_printf(seq, "%3u %02x:%02x:%02x:%02x:%02x:%02x "
+				   "%012llx%3c   %#x%4u%4d",
+				   idx, addr[0], addr[1], addr[2], addr[3],
+				   addr[4], addr[5], (unsigned long long)mask,
+				   (cls_lo & SRAM_VLD_F) ? 'Y' : 'N',
+				   PORTMAP_G(cls_hi),
+				   PF_G(cls_lo),
+				   (cls_lo & VF_VALID_F) ? VF_G(cls_lo) : -1);
+
+		if (replicate) {
+			if (adap->params.arch.mps_rplc_size > 128)
+				seq_printf(seq, " %08x %08x %08x %08x "
+					   "%08x %08x %08x %08x",
+					   rplc[7], rplc[6], rplc[5], rplc[4],
+					   rplc[3], rplc[2], rplc[1], rplc[0]);
+			else
+				seq_printf(seq, " %08x %08x %08x %08x",
+					   rplc[3], rplc[2], rplc[1], rplc[0]);
+		} else {
+			if (adap->params.arch.mps_rplc_size > 128)
+				seq_printf(seq, "%72c", ' ');
+			else
+				seq_printf(seq, "%36c", ' ');
+		}
+
+		if (chip_ver > CHELSIO_T5)
+			seq_printf(seq, "%4u%3u%3u%3u %#x\n",
+				   T6_SRAM_PRIO0_G(cls_lo),
+				   T6_SRAM_PRIO1_G(cls_lo),
+				   T6_SRAM_PRIO2_G(cls_lo),
+				   T6_SRAM_PRIO3_G(cls_lo),
+				   (cls_lo >> T6_MULTILISTEN0_S) & 0xf);
+		else
+			seq_printf(seq, "%4u%3u%3u%3u %#x\n",
+				   SRAM_PRIO0_G(cls_lo), SRAM_PRIO1_G(cls_lo),
+				   SRAM_PRIO2_G(cls_lo), SRAM_PRIO3_G(cls_lo),
+				   (cls_lo >> MULTILISTEN0_S) & 0xf);
 	}
 out:	return 0;
 }
@@ -1416,6 +1503,9 @@ static int rss_config_show(struct seq_file *seq, void *v)
 	seq_printf(seq, "  HashDelay:     %3d\n", HASHDELAY_G(rssconf));
 	if (CHELSIO_CHIP_VERSION(adapter->params.chip) <= CHELSIO_T5)
 		seq_printf(seq, "  VfWrAddr:      %3d\n", VFWRADDR_G(rssconf));
+	else
+		seq_printf(seq, "  VfWrAddr:      %3d\n",
+			   T6_VFWRADDR_G(rssconf));
 	seq_printf(seq, "  KeyMode:       %s\n", keymode[KEYMODE_G(rssconf)]);
 	seq_printf(seq, "  VfWrEn:        %3s\n", yesno(rssconf & VFWREN_F));
 	seq_printf(seq, "  KeyWrEn:       %3s\n", yesno(rssconf & KEYWREN_F));
@@ -1634,14 +1724,14 @@ static int rss_vf_config_open(struct inode *inode, struct file *file)
 	struct adapter *adapter = inode->i_private;
 	struct seq_tab *p;
 	struct rss_vf_conf *vfconf;
-	int vf;
+	int vf, vfcount = adapter->params.arch.vfcount;
 
-	p = seq_open_tab(file, 128, sizeof(*vfconf), 1, rss_vf_config_show);
+	p = seq_open_tab(file, vfcount, sizeof(*vfconf), 1, rss_vf_config_show);
 	if (!p)
 		return -ENOMEM;
 
 	vfconf = (struct rss_vf_conf *)p->data;
-	for (vf = 0; vf < 128; vf++) {
+	for (vf = 0; vf < vfcount; vf++) {
 		t4_read_rss_vf_config(adapter, vf, &vfconf[vf].rss_vf_vfl,
 				      &vfconf[vf].rss_vf_vfh);
 	}
@@ -2033,7 +2123,7 @@ void add_debugfs_files(struct adapter *adap,
 int t4_setup_debugfs(struct adapter *adap)
 {
 	int i;
-	u32 size;
+	u32 size = 0;
 	struct dentry *de;
 
 	static struct t4_debugfs_entry t4_debugfs_files[] = {
@@ -2104,12 +2194,7 @@ int t4_setup_debugfs(struct adapter *adap)
 		size = t4_read_reg(adap, MA_EDRAM1_BAR_A);
 		add_debugfs_mem(adap, "edc1", MEM_EDC1, EDRAM1_SIZE_G(size));
 	}
-	if (is_t4(adap->params.chip)) {
-		size = t4_read_reg(adap, MA_EXT_MEMORY_BAR_A);
-		if (i & EXT_MEM_ENABLE_F)
-			add_debugfs_mem(adap, "mc", MEM_MC,
-					EXT_MEM_SIZE_G(size));
-	} else {
+	if (is_t5(adap->params.chip)) {
 		if (i & EXT_MEM0_ENABLE_F) {
 			size = t4_read_reg(adap, MA_EXT_MEMORY0_BAR_A);
 			add_debugfs_mem(adap, "mc0", MEM_MC0,
@@ -2120,6 +2205,11 @@ int t4_setup_debugfs(struct adapter *adap)
 			add_debugfs_mem(adap, "mc1", MEM_MC1,
 					EXT_MEM1_SIZE_G(size));
 		}
+	} else {
+		if (i & EXT_MEM_ENABLE_F)
+			size = t4_read_reg(adap, MA_EXT_MEMORY_BAR_A);
+			add_debugfs_mem(adap, "mc", MEM_MC,
+					EXT_MEM_SIZE_G(size));
 	}
 
 	de = debugfs_create_file_size("flash", S_IRUSR, adap->debugfs_root, adap,
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
index 974b27ce6a70..a589591e5b63 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
@@ -135,8 +135,10 @@ struct filter_entry {
 
 #define FW4_FNAME "cxgb4/t4fw.bin"
 #define FW5_FNAME "cxgb4/t5fw.bin"
+#define FW6_FNAME "cxgb4/t6fw.bin"
 #define FW4_CFNAME "cxgb4/t4-config.txt"
 #define FW5_CFNAME "cxgb4/t5-config.txt"
+#define FW6_CFNAME "cxgb4/t6-config.txt"
 #define PHY_AQ1202_FIRMWARE "cxgb4/aq1202_fw.cld"
 #define PHY_BCM84834_FIRMWARE "cxgb4/bcm8483.bin"
 #define PHY_AQ1202_DEVICEID 0x4409
@@ -1721,7 +1723,7 @@ static int tid_init(struct tid_info *t)
 	bitmap_zero(t->stid_bmap, t->nstids + t->nsftids);
 	/* Reserve stid 0 for T4/T5 adapters */
 	if (!t->stid_base &&
-	    (is_t4(adap->params.chip) || is_t5(adap->params.chip)))
+	    (CHELSIO_CHIP_VERSION(adap->params.chip) <= CHELSIO_T5))
 		__set_bit(0, t->stid_bmap);
 
 	return 0;
@@ -2108,10 +2110,7 @@ int cxgb4_read_tpte(struct net_device *dev, u32 stag, __be32 *tpte)
 		if (offset < mc0_end) {
 			memtype = MEM_MC0;
 			memaddr = offset - edc1_end;
-		} else if (is_t4(adap->params.chip)) {
-			/* T4 only has a single memory channel */
-			goto err;
-		} else {
+		} else if (is_t5(adap->params.chip)) {
 			size = t4_read_reg(adap, MA_EXT_MEMORY1_BAR_A);
 			mc1_size = EXT_MEM1_SIZE_G(size) << 20;
 			mc1_end = mc0_end + mc1_size;
@@ -2122,6 +2121,9 @@ int cxgb4_read_tpte(struct net_device *dev, u32 stag, __be32 *tpte)
 				/* offset beyond the end of any memory */
 				goto err;
 			}
+		} else {
+			/* T4/T6 only has a single memory channel */
+			goto err;
 		}
 	}
 
@@ -2286,9 +2288,13 @@ static void process_db_full(struct work_struct *work)
 	drain_db_fifo(adap, dbfifo_drain_delay);
 	enable_dbs(adap);
 	notify_rdma_uld(adap, CXGB4_CONTROL_DB_EMPTY);
-	t4_set_reg_field(adap, SGE_INT_ENABLE3_A,
-			 DBFIFO_HP_INT_F | DBFIFO_LP_INT_F,
-			 DBFIFO_HP_INT_F | DBFIFO_LP_INT_F);
+	if (CHELSIO_CHIP_VERSION(adap->params.chip) <= CHELSIO_T5)
+		t4_set_reg_field(adap, SGE_INT_ENABLE3_A,
+				 DBFIFO_HP_INT_F | DBFIFO_LP_INT_F,
+				 DBFIFO_HP_INT_F | DBFIFO_LP_INT_F);
+	else
+		t4_set_reg_field(adap, SGE_INT_ENABLE3_A,
+				 DBFIFO_LP_INT_F, DBFIFO_LP_INT_F);
 }
 
 static void sync_txq_pidx(struct adapter *adap, struct sge_txq *q)
@@ -2350,7 +2356,7 @@ static void process_db_drop(struct work_struct *work)
 		drain_db_fifo(adap, dbfifo_drain_delay);
 		enable_dbs(adap);
 		notify_rdma_uld(adap, CXGB4_CONTROL_DB_EMPTY);
-	} else {
+	} else if (is_t5(adap->params.chip)) {
 		u32 dropped_db = t4_read_reg(adap, 0x010ac);
 		u16 qid = (dropped_db >> 15) & 0x1ffff;
 		u16 pidx_inc = dropped_db & 0x1fff;
@@ -2371,7 +2377,8 @@ static void process_db_drop(struct work_struct *work)
 		t4_set_reg_field(adap, 0x10b0, 1<<15, 1<<15);
 	}
 
-	t4_set_reg_field(adap, SGE_DOORBELL_CONTROL_A, DROPPED_DB_F, 0);
+	if (CHELSIO_CHIP_VERSION(adap->params.chip) <= CHELSIO_T5)
+		t4_set_reg_field(adap, SGE_DOORBELL_CONTROL_A, DROPPED_DB_F, 0);
 }
 
 void t4_db_full(struct adapter *adap)
@@ -3390,6 +3397,9 @@ static int adap_init0_config(struct adapter *adapter, int reset)
 	case CHELSIO_T5:
 		fw_config_file = FW5_CFNAME;
 		break;
+	case CHELSIO_T6:
+		fw_config_file = FW6_CFNAME;
+		break;
 	default:
 		dev_err(adapter->pdev_dev, "Device %d is not supported\n",
 		       adapter->pdev->device);
@@ -3586,7 +3596,24 @@ static struct fw_info fw_info_array[] = {
 			.intfver_iscsi = FW_INTFVER(T5, ISCSI),
 			.intfver_fcoe = FW_INTFVER(T5, FCOE),
 		},
+	}, {
+		.chip = CHELSIO_T6,
+		.fs_name = FW6_CFNAME,
+		.fw_mod_name = FW6_FNAME,
+		.fw_hdr = {
+			.chip = FW_HDR_CHIP_T6,
+			.fw_ver = __cpu_to_be32(FW_VERSION(T6)),
+			.intfver_nic = FW_INTFVER(T6, NIC),
+			.intfver_vnic = FW_INTFVER(T6, VNIC),
+			.intfver_ofld = FW_INTFVER(T6, OFLD),
+			.intfver_ri = FW_INTFVER(T6, RI),
+			.intfver_iscsipdu = FW_INTFVER(T6, ISCSIPDU),
+			.intfver_iscsi = FW_INTFVER(T6, ISCSI),
+			.intfver_fcoepdu = FW_INTFVER(T6, FCOEPDU),
+			.intfver_fcoe = FW_INTFVER(T6, FCOE),
+		},
 	}
+
 };
 
 static struct fw_info *find_fw_info(int chip)
diff --git a/drivers/net/ethernet/chelsio/cxgb4/sge.c b/drivers/net/ethernet/chelsio/cxgb4/sge.c
index f9c889e14634..6b7c37fd0252 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/sge.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/sge.c
@@ -522,14 +522,13 @@ static void unmap_rx_buf(struct adapter *adap, struct sge_fl *q)
 
 static inline void ring_fl_db(struct adapter *adap, struct sge_fl *q)
 {
-	u32 val;
 	if (q->pend_cred >= 8) {
+		u32 val = adap->params.arch.sge_fl_db;
+
 		if (is_t4(adap->params.chip))
-			val = PIDX_V(q->pend_cred / 8);
+			val |= PIDX_V(q->pend_cred / 8);
 		else
-			val = PIDX_T5_V(q->pend_cred / 8) |
-				DBTYPE_F;
-		val |= DBPRIO_F;
+			val |= PIDX_T5_V(q->pend_cred / 8);
 
 		/* Make sure all memory writes to the Free List queue are
 		 * committed before we tell the hardware about them.
@@ -1034,7 +1033,7 @@ static void inline_tx_skb(const struct sk_buff *skb, const struct sge_txq *q,
  * Figure out what HW csum a packet wants and return the appropriate control
  * bits.
  */
-static u64 hwcsum(const struct sk_buff *skb)
+static u64 hwcsum(enum chip_type chip, const struct sk_buff *skb)
 {
 	int csum_type;
 	const struct iphdr *iph = ip_hdr(skb);
@@ -1065,11 +1064,16 @@ nocsum:			/*
 			goto nocsum;
 	}
 
-	if (likely(csum_type >= TX_CSUM_TCPIP))
-		return TXPKT_CSUM_TYPE_V(csum_type) |
-			TXPKT_IPHDR_LEN_V(skb_network_header_len(skb)) |
-			TXPKT_ETHHDR_LEN_V(skb_network_offset(skb) - ETH_HLEN);
-	else {
+	if (likely(csum_type >= TX_CSUM_TCPIP)) {
+		u64 hdr_len = TXPKT_IPHDR_LEN_V(skb_network_header_len(skb));
+		int eth_hdr_len = skb_network_offset(skb) - ETH_HLEN;
+
+		if (CHELSIO_CHIP_VERSION(chip) <= CHELSIO_T5)
+			hdr_len |= TXPKT_ETHHDR_LEN_V(eth_hdr_len);
+		else
+			hdr_len |= T6_TXPKT_ETHHDR_LEN_V(eth_hdr_len);
+		return TXPKT_CSUM_TYPE_V(csum_type) | hdr_len;
+	} else {
 		int start = skb_transport_offset(skb);
 
 		return TXPKT_CSUM_TYPE_V(csum_type) |
@@ -1237,9 +1241,15 @@ out_free:	dev_kfree_skb_any(skb);
 		else
 			lso->c.len = htonl(LSO_T5_XFER_SIZE_V(skb->len));
 		cpl = (void *)(lso + 1);
-		cntrl = TXPKT_CSUM_TYPE_V(v6 ? TX_CSUM_TCPIP6 : TX_CSUM_TCPIP) |
-			TXPKT_IPHDR_LEN_V(l3hdr_len) |
-			TXPKT_ETHHDR_LEN_V(eth_xtra_len);
+
+		if (CHELSIO_CHIP_VERSION(adap->params.chip) <= CHELSIO_T5)
+			cntrl =	TXPKT_ETHHDR_LEN_V(eth_xtra_len);
+		else
+			cntrl = T6_TXPKT_ETHHDR_LEN_V(eth_xtra_len);
+
+		cntrl |= TXPKT_CSUM_TYPE_V(v6 ?
+					   TX_CSUM_TCPIP6 : TX_CSUM_TCPIP) |
+			 TXPKT_IPHDR_LEN_V(l3hdr_len);
 		q->tso++;
 		q->tx_cso += ssi->gso_segs;
 	} else {
@@ -1248,7 +1258,8 @@ out_free:	dev_kfree_skb_any(skb);
 				       FW_WR_IMMDLEN_V(len));
 		cpl = (void *)(wr + 1);
 		if (skb->ip_summed == CHECKSUM_PARTIAL) {
-			cntrl = hwcsum(skb) | TXPKT_IPCSUM_DIS_F;
+			cntrl = hwcsum(adap->params.chip, skb) |
+				TXPKT_IPCSUM_DIS_F;
 			q->tx_cso++;
 		}
 	}
@@ -2440,6 +2451,8 @@ int t4_sge_alloc_rxq(struct adapter *adap, struct sge_rspq *iq, bool fwevtq,
 		c.iqns_to_fl0congen = htonl(FW_IQ_CMD_IQFLINTCONGEN_F);
 
 	if (fl) {
+		enum chip_type chip = CHELSIO_CHIP_VERSION(adap->params.chip);
+
 		/* Allocate the ring for the hardware free list (with space
 		 * for its status page) along with the associated software
 		 * descriptor ring.  The free list size needs to be a multiple
@@ -2468,7 +2481,9 @@ int t4_sge_alloc_rxq(struct adapter *adap, struct sge_rspq *iq, bool fwevtq,
 				      FW_IQ_CMD_FL0CONGEN_F);
 		c.fl0dcaen_to_fl0cidxfthresh =
 			htons(FW_IQ_CMD_FL0FBMIN_V(FETCHBURSTMIN_64B_X) |
-			      FW_IQ_CMD_FL0FBMAX_V(FETCHBURSTMAX_512B_X));
+			      FW_IQ_CMD_FL0FBMAX_V((chip <= CHELSIO_T5) ?
+						   FETCHBURSTMAX_512B_X :
+						   FETCHBURSTMAX_256B_X));
 		c.fl0size = htons(flsz);
 		c.fl0addr = cpu_to_be64(fl->addr);
 	}
diff --git a/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c b/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c
index 36a858c24305..35a44db29347 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c
@@ -150,7 +150,12 @@ void t4_write_indirect(struct adapter *adap, unsigned int addr_reg,
  */
 void t4_hw_pci_read_cfg4(struct adapter *adap, int reg, u32 *val)
 {
-	u32 req = ENABLE_F | FUNCTION_V(adap->pf) | REGISTER_V(reg);
+	u32 req = FUNCTION_V(adap->pf) | REGISTER_V(reg);
+
+	if (CHELSIO_CHIP_VERSION(adap->params.chip) <= CHELSIO_T5)
+		req |= ENABLE_F;
+	else
+		req |= T6_ENABLE_F;
 
 	if (is_t4(adap->params.chip))
 		req |= LOCALCFG_F;
@@ -381,9 +386,8 @@ int t4_memory_rw(struct adapter *adap, int win, int mtype, u32 addr,
 	/* Offset into the region of memory which is being accessed
 	 * MEM_EDC0 = 0
 	 * MEM_EDC1 = 1
-	 * MEM_MC   = 2 -- T4
-	 * MEM_MC0  = 2 -- For T5
-	 * MEM_MC1  = 3 -- For T5
+	 * MEM_MC   = 2 -- MEM_MC for chips with only 1 memory controller
+	 * MEM_MC1  = 3 -- for chips with 2 memory controllers (e.g. T5)
 	 */
 	edc_size  = EDRAM0_SIZE_G(t4_read_reg(adap, MA_EDRAM0_BAR_A));
 	if (mtype != MEM_MC1)
@@ -634,6 +638,7 @@ unsigned int t4_get_regs_len(struct adapter *adapter)
 		return T4_REGMAP_SIZE;
 
 	case CHELSIO_T5:
+	case CHELSIO_T6:
 		return T5_REGMAP_SIZE;
 	}
 
@@ -1316,6 +1321,344 @@ void t4_get_regs(struct adapter *adap, void *buf, size_t buf_size)
 		0x51300, 0x51308,
 	};
 
+	static const unsigned int t6_reg_ranges[] = {
+		0x1008, 0x114c,
+		0x1180, 0x11b4,
+		0x11fc, 0x1250,
+		0x1280, 0x133c,
+		0x1800, 0x18fc,
+		0x3000, 0x302c,
+		0x3060, 0x30d8,
+		0x30e0, 0x30fc,
+		0x3140, 0x357c,
+		0x35a8, 0x35cc,
+		0x35ec, 0x35ec,
+		0x3600, 0x5624,
+		0x56cc, 0x575c,
+		0x580c, 0x5814,
+		0x5890, 0x58bc,
+		0x5940, 0x595c,
+		0x5980, 0x598c,
+		0x59b0, 0x59dc,
+		0x59fc, 0x5a18,
+		0x5a60, 0x5a6c,
+		0x5a80, 0x5a9c,
+		0x5b94, 0x5bfc,
+		0x5c10, 0x5ec0,
+		0x5ec8, 0x5ec8,
+		0x6000, 0x6040,
+		0x6058, 0x6154,
+		0x7700, 0x7798,
+		0x77c0, 0x7880,
+		0x78cc, 0x78fc,
+		0x7b00, 0x7c54,
+		0x7d00, 0x7efc,
+		0x8dc0, 0x8de0,
+		0x8df8, 0x8e84,
+		0x8ea0, 0x8f88,
+		0x8fb8, 0x911c,
+		0x9400, 0x9470,
+		0x9600, 0x971c,
+		0x9800, 0x9808,
+		0x9820, 0x983c,
+		0x9850, 0x9864,
+		0x9c00, 0x9c6c,
+		0x9c80, 0x9cec,
+		0x9d00, 0x9d6c,
+		0x9d80, 0x9dec,
+		0x9e00, 0x9e6c,
+		0x9e80, 0x9eec,
+		0x9f00, 0x9f6c,
+		0x9f80, 0xa020,
+		0xd004, 0xd03c,
+		0xdfc0, 0xdfe0,
+		0xe000, 0xf008,
+		0x11000, 0x11014,
+		0x11048, 0x11110,
+		0x11118, 0x1117c,
+		0x11190, 0x11260,
+		0x11300, 0x1130c,
+		0x12000, 0x1205c,
+		0x19040, 0x1906c,
+		0x19078, 0x19080,
+		0x1908c, 0x19124,
+		0x19150, 0x191b0,
+		0x191d0, 0x191e8,
+		0x19238, 0x192b8,
+		0x193f8, 0x19474,
+		0x19490, 0x194cc,
+		0x194f0, 0x194f8,
+		0x19c00, 0x19c80,
+		0x19c94, 0x19cbc,
+		0x19ce4, 0x19d28,
+		0x19d50, 0x19d78,
+		0x19d94, 0x19dc8,
+		0x19df0, 0x19e10,
+		0x19e50, 0x19e6c,
+		0x19ea0, 0x19f34,
+		0x19f40, 0x19f50,
+		0x19f90, 0x19fac,
+		0x19fc4, 0x19fe4,
+		0x1a000, 0x1a06c,
+		0x1a0b0, 0x1a120,
+		0x1a128, 0x1a138,
+		0x1a190, 0x1a1c4,
+		0x1a1fc, 0x1a1fc,
+		0x1e008, 0x1e00c,
+		0x1e040, 0x1e04c,
+		0x1e284, 0x1e290,
+		0x1e2c0, 0x1e2c0,
+		0x1e2e0, 0x1e2e0,
+		0x1e300, 0x1e384,
+		0x1e3c0, 0x1e3c8,
+		0x1e408, 0x1e40c,
+		0x1e440, 0x1e44c,
+		0x1e684, 0x1e690,
+		0x1e6c0, 0x1e6c0,
+		0x1e6e0, 0x1e6e0,
+		0x1e700, 0x1e784,
+		0x1e7c0, 0x1e7c8,
+		0x1e808, 0x1e80c,
+		0x1e840, 0x1e84c,
+		0x1ea84, 0x1ea90,
+		0x1eac0, 0x1eac0,
+		0x1eae0, 0x1eae0,
+		0x1eb00, 0x1eb84,
+		0x1ebc0, 0x1ebc8,
+		0x1ec08, 0x1ec0c,
+		0x1ec40, 0x1ec4c,
+		0x1ee84, 0x1ee90,
+		0x1eec0, 0x1eec0,
+		0x1eee0, 0x1eee0,
+		0x1ef00, 0x1ef84,
+		0x1efc0, 0x1efc8,
+		0x1f008, 0x1f00c,
+		0x1f040, 0x1f04c,
+		0x1f284, 0x1f290,
+		0x1f2c0, 0x1f2c0,
+		0x1f2e0, 0x1f2e0,
+		0x1f300, 0x1f384,
+		0x1f3c0, 0x1f3c8,
+		0x1f408, 0x1f40c,
+		0x1f440, 0x1f44c,
+		0x1f684, 0x1f690,
+		0x1f6c0, 0x1f6c0,
+		0x1f6e0, 0x1f6e0,
+		0x1f700, 0x1f784,
+		0x1f7c0, 0x1f7c8,
+		0x1f808, 0x1f80c,
+		0x1f840, 0x1f84c,
+		0x1fa84, 0x1fa90,
+		0x1fac0, 0x1fac0,
+		0x1fae0, 0x1fae0,
+		0x1fb00, 0x1fb84,
+		0x1fbc0, 0x1fbc8,
+		0x1fc08, 0x1fc0c,
+		0x1fc40, 0x1fc4c,
+		0x1fe84, 0x1fe90,
+		0x1fec0, 0x1fec0,
+		0x1fee0, 0x1fee0,
+		0x1ff00, 0x1ff84,
+		0x1ffc0, 0x1ffc8,
+		0x30000, 0x30070,
+		0x30100, 0x3015c,
+		0x30190, 0x301d0,
+		0x30200, 0x30318,
+		0x30400, 0x3052c,
+		0x30540, 0x3061c,
+		0x30800, 0x3088c,
+		0x308c0, 0x30908,
+		0x30910, 0x309b8,
+		0x30a00, 0x30a04,
+		0x30a0c, 0x30a2c,
+		0x30a44, 0x30a50,
+		0x30a74, 0x30c24,
+		0x30d00, 0x30d3c,
+		0x30d44, 0x30d7c,
+		0x30de0, 0x30de0,
+		0x30e00, 0x30ed4,
+		0x30f00, 0x30fa4,
+		0x30fc0, 0x30fc4,
+		0x31000, 0x31004,
+		0x31080, 0x310fc,
+		0x31208, 0x31220,
+		0x3123c, 0x31254,
+		0x31300, 0x31300,
+		0x31308, 0x3131c,
+		0x31338, 0x3133c,
+		0x31380, 0x31380,
+		0x31388, 0x313a8,
+		0x313b4, 0x313b4,
+		0x31400, 0x31420,
+		0x31438, 0x3143c,
+		0x31480, 0x31480,
+		0x314a8, 0x314a8,
+		0x314b0, 0x314b4,
+		0x314c8, 0x314d4,
+		0x31a40, 0x31a4c,
+		0x31af0, 0x31b20,
+		0x31b38, 0x31b3c,
+		0x31b80, 0x31b80,
+		0x31ba8, 0x31ba8,
+		0x31bb0, 0x31bb4,
+		0x31bc8, 0x31bd4,
+		0x32140, 0x3218c,
+		0x321f0, 0x32200,
+		0x32218, 0x32218,
+		0x32400, 0x32400,
+		0x32408, 0x3241c,
+		0x32618, 0x32620,
+		0x32664, 0x32664,
+		0x326a8, 0x326a8,
+		0x326ec, 0x326ec,
+		0x32a00, 0x32abc,
+		0x32b00, 0x32b78,
+		0x32c00, 0x32c00,
+		0x32c08, 0x32c3c,
+		0x32e00, 0x32e2c,
+		0x32f00, 0x32f2c,
+		0x33000, 0x330ac,
+		0x330c0, 0x331ac,
+		0x331c0, 0x332c4,
+		0x332e4, 0x333c4,
+		0x333e4, 0x334ac,
+		0x334c0, 0x335ac,
+		0x335c0, 0x336c4,
+		0x336e4, 0x337c4,
+		0x337e4, 0x337fc,
+		0x33814, 0x33814,
+		0x33854, 0x33868,
+		0x33880, 0x3388c,
+		0x338c0, 0x338d0,
+		0x338e8, 0x338ec,
+		0x33900, 0x339ac,
+		0x339c0, 0x33ac4,
+		0x33ae4, 0x33b10,
+		0x33b24, 0x33b50,
+		0x33bf0, 0x33c10,
+		0x33c24, 0x33c50,
+		0x33cf0, 0x33cfc,
+		0x34000, 0x34070,
+		0x34100, 0x3415c,
+		0x34190, 0x341d0,
+		0x34200, 0x34318,
+		0x34400, 0x3452c,
+		0x34540, 0x3461c,
+		0x34800, 0x3488c,
+		0x348c0, 0x34908,
+		0x34910, 0x349b8,
+		0x34a00, 0x34a04,
+		0x34a0c, 0x34a2c,
+		0x34a44, 0x34a50,
+		0x34a74, 0x34c24,
+		0x34d00, 0x34d3c,
+		0x34d44, 0x34d7c,
+		0x34de0, 0x34de0,
+		0x34e00, 0x34ed4,
+		0x34f00, 0x34fa4,
+		0x34fc0, 0x34fc4,
+		0x35000, 0x35004,
+		0x35080, 0x350fc,
+		0x35208, 0x35220,
+		0x3523c, 0x35254,
+		0x35300, 0x35300,
+		0x35308, 0x3531c,
+		0x35338, 0x3533c,
+		0x35380, 0x35380,
+		0x35388, 0x353a8,
+		0x353b4, 0x353b4,
+		0x35400, 0x35420,
+		0x35438, 0x3543c,
+		0x35480, 0x35480,
+		0x354a8, 0x354a8,
+		0x354b0, 0x354b4,
+		0x354c8, 0x354d4,
+		0x35a40, 0x35a4c,
+		0x35af0, 0x35b20,
+		0x35b38, 0x35b3c,
+		0x35b80, 0x35b80,
+		0x35ba8, 0x35ba8,
+		0x35bb0, 0x35bb4,
+		0x35bc8, 0x35bd4,
+		0x36140, 0x3618c,
+		0x361f0, 0x36200,
+		0x36218, 0x36218,
+		0x36400, 0x36400,
+		0x36408, 0x3641c,
+		0x36618, 0x36620,
+		0x36664, 0x36664,
+		0x366a8, 0x366a8,
+		0x366ec, 0x366ec,
+		0x36a00, 0x36abc,
+		0x36b00, 0x36b78,
+		0x36c00, 0x36c00,
+		0x36c08, 0x36c3c,
+		0x36e00, 0x36e2c,
+		0x36f00, 0x36f2c,
+		0x37000, 0x370ac,
+		0x370c0, 0x371ac,
+		0x371c0, 0x372c4,
+		0x372e4, 0x373c4,
+		0x373e4, 0x374ac,
+		0x374c0, 0x375ac,
+		0x375c0, 0x376c4,
+		0x376e4, 0x377c4,
+		0x377e4, 0x377fc,
+		0x37814, 0x37814,
+		0x37854, 0x37868,
+		0x37880, 0x3788c,
+		0x378c0, 0x378d0,
+		0x378e8, 0x378ec,
+		0x37900, 0x379ac,
+		0x379c0, 0x37ac4,
+		0x37ae4, 0x37b10,
+		0x37b24, 0x37b50,
+		0x37bf0, 0x37c10,
+		0x37c24, 0x37c50,
+		0x37cf0, 0x37cfc,
+		0x40040, 0x40040,
+		0x40080, 0x40084,
+		0x40100, 0x40100,
+		0x40140, 0x401bc,
+		0x40200, 0x40214,
+		0x40228, 0x40228,
+		0x40240, 0x40258,
+		0x40280, 0x40280,
+		0x40304, 0x40304,
+		0x40330, 0x4033c,
+		0x41304, 0x413dc,
+		0x41400, 0x4141c,
+		0x41480, 0x414d0,
+		0x44000, 0x4407c,
+		0x440c0, 0x4427c,
+		0x442c0, 0x4447c,
+		0x444c0, 0x4467c,
+		0x446c0, 0x4487c,
+		0x448c0, 0x44a7c,
+		0x44ac0, 0x44c7c,
+		0x44cc0, 0x44e7c,
+		0x44ec0, 0x4507c,
+		0x450c0, 0x451fc,
+		0x45800, 0x45868,
+		0x45880, 0x45884,
+		0x458a0, 0x458b0,
+		0x45a00, 0x45a68,
+		0x45a80, 0x45a84,
+		0x45aa0, 0x45ab0,
+		0x460c0, 0x460e4,
+		0x47000, 0x4708c,
+		0x47200, 0x47250,
+		0x47400, 0x47420,
+		0x47600, 0x47618,
+		0x47800, 0x4782c,
+		0x50000, 0x500cc,
+		0x50400, 0x50400,
+		0x50800, 0x508cc,
+		0x50c00, 0x50c00,
+		0x51000, 0x510b0,
+		0x51300, 0x51324,
+	};
+
 	u32 *buf_end = (u32 *)((char *)buf + buf_size);
 	const unsigned int *reg_ranges;
 	int reg_ranges_size, range;
@@ -1335,6 +1678,11 @@ void t4_get_regs(struct adapter *adap, void *buf, size_t buf_size)
 		reg_ranges_size = ARRAY_SIZE(t5_reg_ranges);
 		break;
 
+	case CHELSIO_T6:
+		reg_ranges = t6_reg_ranges;
+		reg_ranges_size = ARRAY_SIZE(t6_reg_ranges);
+		break;
+
 	default:
 		dev_err(adap->pdev_dev,
 			"Unsupported chip version %d\n", chip_version);
@@ -1948,7 +2296,8 @@ static bool t4_fw_matches_chip(const struct adapter *adap,
 	 * which will keep us "honest" in the future ...
 	 */
 	if ((is_t4(adap->params.chip) && hdr->chip == FW_HDR_CHIP_T4) ||
-	    (is_t5(adap->params.chip) && hdr->chip == FW_HDR_CHIP_T5))
+	    (is_t5(adap->params.chip) && hdr->chip == FW_HDR_CHIP_T5) ||
+	    (is_t6(adap->params.chip) && hdr->chip == FW_HDR_CHIP_T6))
 		return true;
 
 	dev_err(adap->pdev_dev,
@@ -2488,6 +2837,7 @@ static void tp_intr_handler(struct adapter *adapter)
 static void sge_intr_handler(struct adapter *adapter)
 {
 	u64 v;
+	u32 err;
 
 	static const struct intr_info sge_intr_info[] = {
 		{ ERR_CPL_EXCEED_IQE_SIZE_F,
@@ -2496,8 +2846,6 @@ static void sge_intr_handler(struct adapter *adapter)
 		  "SGE GTS CIDX increment too large", -1, 0 },
 		{ ERR_CPL_OPCODE_0_F, "SGE received 0-length CPL", -1, 0 },
 		{ DBFIFO_LP_INT_F, NULL, -1, 0, t4_db_full },
-		{ DBFIFO_HP_INT_F, NULL, -1, 0, t4_db_full },
-		{ ERR_DROPPED_DB_F, NULL, -1, 0, t4_db_dropped },
 		{ ERR_DATA_CPL_ON_HIGH_QID1_F | ERR_DATA_CPL_ON_HIGH_QID0_F,
 		  "SGE IQID > 1023 received CPL for FL", -1, 0 },
 		{ ERR_BAD_DB_PIDX3_F, "SGE DBP 3 pidx increment too large", -1,
@@ -2510,13 +2858,19 @@ static void sge_intr_handler(struct adapter *adapter)
 		  0 },
 		{ ERR_ING_CTXT_PRIO_F,
 		  "SGE too many priority ingress contexts", -1, 0 },
-		{ ERR_EGR_CTXT_PRIO_F,
-		  "SGE too many priority egress contexts", -1, 0 },
 		{ INGRESS_SIZE_ERR_F, "SGE illegal ingress QID", -1, 0 },
 		{ EGRESS_SIZE_ERR_F, "SGE illegal egress QID", -1, 0 },
 		{ 0 }
 	};
 
+	static struct intr_info t4t5_sge_intr_info[] = {
+		{ ERR_DROPPED_DB_F, NULL, -1, 0, t4_db_dropped },
+		{ DBFIFO_HP_INT_F, NULL, -1, 0, t4_db_full },
+		{ ERR_EGR_CTXT_PRIO_F,
+		  "SGE too many priority egress contexts", -1, 0 },
+		{ 0 }
+	};
+
 	v = (u64)t4_read_reg(adapter, SGE_INT_CAUSE1_A) |
 		((u64)t4_read_reg(adapter, SGE_INT_CAUSE2_A) << 32);
 	if (v) {
@@ -2526,8 +2880,23 @@ static void sge_intr_handler(struct adapter *adapter)
 		t4_write_reg(adapter,