1 files changed, 135 insertions, 22 deletions

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_descs.c b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_descs.c
index 1d858fdec997..a2980482fcce 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_descs.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_descs.c
@@ -4,11 +4,12 @@
  * stmmac XGMAC support.
  */
 
+#include <linux/bitfield.h>
 #include <linux/stmmac.h>
 #include "common.h"
 #include "dwxgmac2.h"
 
-static int dwxgmac2_get_tx_status(void *data, struct stmmac_extra_stats *x,
+static int dwxgmac2_get_tx_status(struct stmmac_extra_stats *x,
 				  struct dma_desc *p, void __iomem *ioaddr)
 {
 	unsigned int tdes3 = le32_to_cpu(p->des3);
@@ -22,20 +23,21 @@ static int dwxgmac2_get_tx_status(void *data, struct stmmac_extra_stats *x,
 	return ret;
 }
 
-static int dwxgmac2_get_rx_status(void *data, struct stmmac_extra_stats *x,
+static int dwxgmac2_get_rx_status(struct stmmac_extra_stats *x,
 				  struct dma_desc *p)
 {
 	unsigned int rdes3 = le32_to_cpu(p->des3);
-	int ret = good_frame;
 
 	if (unlikely(rdes3 & XGMAC_RDES3_OWN))
 		return dma_own;
+	if (unlikely(rdes3 & XGMAC_RDES3_CTXT))
+		return discard_frame;
 	if (likely(!(rdes3 & XGMAC_RDES3_LD)))
+		return rx_not_ls;
+	if (unlikely((rdes3 & XGMAC_RDES3_ES) && (rdes3 & XGMAC_RDES3_LD)))
 		return discard_frame;
-	if (unlikely(rdes3 & XGMAC_RDES3_ES))
-		ret = discard_frame;
 
-	return ret;
+	return good_frame;
 }
 
 static int dwxgmac2_get_tx_len(struct dma_desc *p)
@@ -55,10 +57,12 @@ static void dwxgmac2_set_tx_owner(struct dma_desc *p)
 
 static void dwxgmac2_set_rx_owner(struct dma_desc *p, int disable_rx_ic)
 {
-	p->des3 = cpu_to_le32(XGMAC_RDES3_OWN);
+	u32 flags = XGMAC_RDES3_OWN;
 
 	if (!disable_rx_ic)
-		p->des3 |= cpu_to_le32(XGMAC_RDES3_IOC);
+		flags |= XGMAC_RDES3_IOC;
+
+	p->des3 |= cpu_to_le32(flags);
 }
 
 static int dwxgmac2_get_tx_ls(struct dma_desc *p)
@@ -66,6 +70,21 @@ static int dwxgmac2_get_tx_ls(struct dma_desc *p)
 	return (le32_to_cpu(p->des3) & XGMAC_RDES3_LD) > 0;
 }
 
+static u16 dwxgmac2_wrback_get_rx_vlan_tci(struct dma_desc *p)
+{
+	return le32_to_cpu(p->des0) & XGMAC_RDES0_VLAN_TAG_MASK;
+}
+
+static bool dwxgmac2_wrback_get_rx_vlan_valid(struct dma_desc *p)
+{
+	u32 et_lt;
+
+	et_lt = FIELD_GET(XGMAC_RDES3_ET_LT, le32_to_cpu(p->des3));
+
+	return et_lt >= XGMAC_ET_LT_VLAN_STAG &&
+	       et_lt <= XGMAC_ET_LT_DVLAN_STAG_CTAG;
+}
+
 static int dwxgmac2_get_rx_frame_len(struct dma_desc *p, int rx_coe)
 {
 	return (le32_to_cpu(p->des3) & XGMAC_RDES3_PL);
@@ -98,11 +117,17 @@ static int dwxgmac2_rx_check_timestamp(void *desc)
 	unsigned int rdes3 = le32_to_cpu(p->des3);
 	bool desc_valid, ts_valid;
 
+	dma_rmb();
+
 	desc_valid = !(rdes3 & XGMAC_RDES3_OWN) && (rdes3 & XGMAC_RDES3_CTXT);
 	ts_valid = !(rdes3 & XGMAC_RDES3_TSD) && (rdes3 & XGMAC_RDES3_TSA);
 
-	if (likely(desc_valid && ts_valid))
+	if (likely(desc_valid && ts_valid)) {
+		if ((p->des0 == 0xffffffff) && (p->des1 == 0xffffffff))
+			return -EINVAL;
 		return 0;
+	}
+
 	return -EINVAL;
 }
 
@@ -113,17 +138,14 @@ static int dwxgmac2_get_rx_timestamp_status(void *desc, void *next_desc,
 	unsigned int rdes3 = le32_to_cpu(p->des3);
 	int ret = -EBUSY;
 
-	if (likely(rdes3 & XGMAC_RDES3_CDA)) {
+	if (likely(rdes3 & XGMAC_RDES3_CDA))
 		ret = dwxgmac2_rx_check_timestamp(next_desc);
-		if (ret)
-			return ret;
-	}
 
-	return ret;
+	return !ret;
 }
 
 static void dwxgmac2_init_rx_desc(struct dma_desc *p, int disable_rx_ic,
-				  int mode, int end)
+				  int mode, int end, int bfsize)
 {
 	dwxgmac2_set_rx_owner(p, disable_rx_ic);
 }
@@ -144,7 +166,7 @@ static void dwxgmac2_prepare_tx_desc(struct dma_desc *p, int is_fs, int len,
 
 	p->des2 |= cpu_to_le32(len & XGMAC_TDES2_B1L);
 
-	tdes3 = tot_pkt_len & XGMAC_TDES3_FL;
+	tdes3 |= tot_pkt_len & XGMAC_TDES3_FL;
 	if (is_fs)
 		tdes3 |= XGMAC_TDES3_FD;
 	else
@@ -235,23 +257,106 @@ static void dwxgmac2_set_mss(struct dma_desc *p, unsigned int mss)
 	p->des3 = cpu_to_le32(XGMAC_TDES3_CTXT | XGMAC_TDES3_TCMSSV);
 }
 
-static void dwxgmac2_get_addr(struct dma_desc *p, unsigned int *addr)
+static void dwxgmac2_set_addr(struct dma_desc *p, dma_addr_t addr)
 {
-	*addr = le32_to_cpu(p->des0);
+	p->des0 = cpu_to_le32(lower_32_bits(addr));
+	p->des1 = cpu_to_le32(upper_32_bits(addr));
 }
 
-static void dwxgmac2_set_addr(struct dma_desc *p, dma_addr_t addr)
+static void dwxgmac2_clear(struct dma_desc *p)
 {
-	p->des0 = cpu_to_le32(addr);
+	p->des0 = 0;
 	p->des1 = 0;
+	p->des2 = 0;
+	p->des3 = 0;
 }
 
-static void dwxgmac2_clear(struct dma_desc *p)
+static int dwxgmac2_get_rx_hash(struct dma_desc *p, u32 *hash,
+				enum pkt_hash_types *type)
+{
+	unsigned int rdes3 = le32_to_cpu(p->des3);
+	u32 ptype;
+
+	if (rdes3 & XGMAC_RDES3_RSV) {
+		ptype = (rdes3 & XGMAC_RDES3_L34T) >> XGMAC_RDES3_L34T_SHIFT;
+
+		switch (ptype) {
+		case XGMAC_L34T_IP4TCP:
+		case XGMAC_L34T_IP4UDP:
+		case XGMAC_L34T_IP6TCP:
+		case XGMAC_L34T_IP6UDP:
+			*type = PKT_HASH_TYPE_L4;
+			break;
+		default:
+			*type = PKT_HASH_TYPE_L3;
+			break;
+		}
+
+		*hash = le32_to_cpu(p->des1);
+		return 0;
+	}
+
+	return -EINVAL;
+}
+
+static void dwxgmac2_get_rx_header_len(struct dma_desc *p, unsigned int *len)
+{
+	if (le32_to_cpu(p->des3) & XGMAC_RDES3_L34T)
+		*len = le32_to_cpu(p->des2) & XGMAC_RDES2_HL;
+}
+
+static void dwxgmac2_set_sec_addr(struct dma_desc *p, dma_addr_t addr, bool is_valid)
+{
+	p->des2 = cpu_to_le32(lower_32_bits(addr));
+	p->des3 = cpu_to_le32(upper_32_bits(addr));
+}
+
+static void dwxgmac2_set_sarc(struct dma_desc *p, u32 sarc_type)
+{
+	sarc_type <<= XGMAC_TDES3_SAIC_SHIFT;
+
+	p->des3 |= cpu_to_le32(sarc_type & XGMAC_TDES3_SAIC);
+}
+
+static void dwxgmac2_set_vlan_tag(struct dma_desc *p, u16 tag, u16 inner_tag,
+				  u32 inner_type)
 {
 	p->des0 = 0;
 	p->des1 = 0;
 	p->des2 = 0;
 	p->des3 = 0;
+
+	/* Inner VLAN */
+	if (inner_type) {
+		u32 des = inner_tag << XGMAC_TDES2_IVT_SHIFT;
+
+		des &= XGMAC_TDES2_IVT;
+		p->des2 = cpu_to_le32(des);
+
+		des = inner_type << XGMAC_TDES3_IVTIR_SHIFT;
+		des &= XGMAC_TDES3_IVTIR;
+		p->des3 = cpu_to_le32(des | XGMAC_TDES3_IVLTV);
+	}
+
+	/* Outer VLAN */
+	p->des3 |= cpu_to_le32(tag & XGMAC_TDES3_VT);
+	p->des3 |= cpu_to_le32(XGMAC_TDES3_VLTV);
+
+	p->des3 |= cpu_to_le32(XGMAC_TDES3_CTXT);
+}
+
+static void dwxgmac2_set_vlan(struct dma_desc *p, u32 type)
+{
+	type <<= XGMAC_TDES2_VTIR_SHIFT;
+	p->des2 |= cpu_to_le32(type & XGMAC_TDES2_VTIR);
+}
+
+static void dwxgmac2_set_tbs(struct dma_edesc *p, u32 sec, u32 nsec)
+{
+	p->des4 = cpu_to_le32((sec & XGMAC_TDES0_LT) | XGMAC_TDES0_LTV);
+	p->des5 = cpu_to_le32(nsec & XGMAC_TDES1_LT);
+	p->des6 = 0;
+	p->des7 = 0;
 }
 
 const struct stmmac_desc_ops dwxgmac210_desc_ops = {
@@ -262,6 +367,8 @@ const struct stmmac_desc_ops dwxgmac210_desc_ops = {
 	.set_tx_owner = dwxgmac2_set_tx_owner,
 	.set_rx_owner = dwxgmac2_set_rx_owner,
 	.get_tx_ls = dwxgmac2_get_tx_ls,
+	.get_rx_vlan_tci = dwxgmac2_wrback_get_rx_vlan_tci,
+	.get_rx_vlan_valid = dwxgmac2_wrback_get_rx_vlan_valid,
 	.get_rx_frame_len = dwxgmac2_get_rx_frame_len,
 	.enable_tx_timestamp = dwxgmac2_enable_tx_timestamp,
 	.get_tx_timestamp_status = dwxgmac2_get_tx_timestamp_status,
@@ -274,7 +381,13 @@ const struct stmmac_desc_ops dwxgmac210_desc_ops = {
 	.init_rx_desc = dwxgmac2_init_rx_desc,
 	.init_tx_desc = dwxgmac2_init_tx_desc,
 	.set_mss = dwxgmac2_set_mss,
-	.get_addr = dwxgmac2_get_addr,
 	.set_addr = dwxgmac2_set_addr,
 	.clear = dwxgmac2_clear,
+	.get_rx_hash = dwxgmac2_get_rx_hash,
+	.get_rx_header_len = dwxgmac2_get_rx_header_len,
+	.set_sec_addr = dwxgmac2_set_sec_addr,
+	.set_sarc = dwxgmac2_set_sarc,
+	.set_vlan_tag = dwxgmac2_set_vlan_tag,
+	.set_vlan = dwxgmac2_set_vlan,
+	.set_tbs = dwxgmac2_set_tbs,
 };