net: atlantic: loopback tests via private flags

Here we add a number of ethtool private flags
to allow enabling various loopbacks on HW.

Thats useful for verification and bringup works.

Signed-off-by: Igor Russkikh <irusskikh@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

5 files changed, 152 insertions, 1 deletions

diff --git a/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_b0.c b/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_b0.c
index c7297ca03624..1165689af37d 100644
--- a/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_b0.c
+++ b/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_b0.c
@@ -1427,6 +1427,30 @@ static int hw_atl_b0_hw_vlan_ctrl(struct aq_hw_s *self, bool enable)
 	return aq_hw_err_from_flags(self);
 }
 
+static int hw_atl_b0_set_loopback(struct aq_hw_s *self, u32 mode, bool enable)
+{
+	switch (mode) {
+	case AQ_HW_LOOPBACK_DMA_SYS:
+		hw_atl_tpb_tx_dma_sys_lbk_en_set(self, enable);
+		hw_atl_rpb_dma_sys_lbk_set(self, enable);
+		break;
+	case AQ_HW_LOOPBACK_PKT_SYS:
+		hw_atl_tpo_tx_pkt_sys_lbk_en_set(self, enable);
+		hw_atl_rpf_tpo_to_rpf_sys_lbk_set(self, enable);
+		break;
+	case AQ_HW_LOOPBACK_DMA_NET:
+		hw_atl_rpf_vlan_prom_mode_en_set(self, enable);
+		hw_atl_rpfl2promiscuous_mode_en_set(self, enable);
+		hw_atl_tpb_tx_tx_clk_gate_en_set(self, !enable);
+		hw_atl_tpb_tx_dma_net_lbk_en_set(self, enable);
+		hw_atl_rpb_dma_net_lbk_set(self, enable);
+		break;
+	default:
+		return -EINVAL;
+	}
+	return 0;
+}
+
 const struct aq_hw_ops hw_atl_ops_b0 = {
 	.hw_set_mac_address   = hw_atl_b0_hw_mac_addr_set,
 	.hw_init              = hw_atl_b0_hw_init,
@@ -1481,5 +1505,9 @@ const struct aq_hw_ops hw_atl_ops_b0 = {
 	.rx_extract_ts           = hw_atl_b0_rx_extract_ts,
 	.extract_hwts            = hw_atl_b0_extract_hwts,
 	.hw_set_offload          = hw_atl_b0_hw_offload_set,
-	.hw_set_fc                   = hw_atl_b0_set_fc,
+	.hw_get_hw_stats         = hw_atl_utils_get_hw_stats,
+	.hw_get_fw_version       = hw_atl_utils_get_fw_version,
+	.hw_set_offload          = hw_atl_b0_hw_offload_set,
+	.hw_set_loopback         = hw_atl_b0_set_loopback,
+	.hw_set_fc               = hw_atl_b0_set_fc,
 };
diff --git a/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_llh.c b/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_llh.c
index 6cadc9054544..d1f68fc16291 100644
--- a/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_llh.c
+++ b/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_llh.c
@@ -563,6 +563,13 @@ void hw_atl_rpb_dma_sys_lbk_set(struct aq_hw_s *aq_hw, u32 dma_sys_lbk)
 			    HW_ATL_RPB_DMA_SYS_LBK_SHIFT, dma_sys_lbk);
 }
 
+void hw_atl_rpb_dma_net_lbk_set(struct aq_hw_s *aq_hw, u32 dma_net_lbk)
+{
+	aq_hw_write_reg_bit(aq_hw, HW_ATL_RPB_DMA_NET_LBK_ADR,
+			    HW_ATL_RPB_DMA_NET_LBK_MSK,
+			    HW_ATL_RPB_DMA_NET_LBK_SHIFT, dma_net_lbk);
+}
+
 void hw_atl_rpb_rpf_rx_traf_class_mode_set(struct aq_hw_s *aq_hw,
 					   u32 rx_traf_class_mode)
 {
@@ -1341,7 +1348,26 @@ void hw_atl_tpb_tx_dma_sys_lbk_en_set(struct aq_hw_s *aq_hw, u32 tx_dma_sys_lbk_
 			    tx_dma_sys_lbk_en);
 }
 
+void hw_atl_tpb_tx_dma_net_lbk_en_set(struct aq_hw_s *aq_hw,
+				      u32 tx_dma_net_lbk_en)
+{
+	aq_hw_write_reg_bit(aq_hw, HW_ATL_TPB_DMA_NET_LBK_ADR,
+			    HW_ATL_TPB_DMA_NET_LBK_MSK,
+			    HW_ATL_TPB_DMA_NET_LBK_SHIFT,
+			    tx_dma_net_lbk_en);
+}
+
+void hw_atl_tpb_tx_tx_clk_gate_en_set(struct aq_hw_s *aq_hw,
+				      u32 tx_clk_gate_en)
+{
+	aq_hw_write_reg_bit(aq_hw, HW_ATL_TPB_TX_CLK_GATE_EN_ADR,
+			    HW_ATL_TPB_TX_CLK_GATE_EN_MSK,
+			    HW_ATL_TPB_TX_CLK_GATE_EN_SHIFT,
+			    tx_clk_gate_en);
+}
+
 void hw_atl_tpb_tx_pkt_buff_size_per_tc_set(struct aq_hw_s *aq_hw,
+
 					    u32 tx_pkt_buff_size_per_tc, u32 buffer)
 {
 	aq_hw_write_reg_bit(aq_hw, HW_ATL_TPB_TXBBUF_SIZE_ADR(buffer),
diff --git a/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_llh.h b/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_llh.h
index 5750b0c9cae7..62992b23c0e8 100644
--- a/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_llh.h
+++ b/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_llh.h
@@ -288,6 +288,9 @@ void hw_atl_reg_glb_cpu_scratch_scp_set(struct aq_hw_s *aq_hw,
 /* set dma system loopback */
 void hw_atl_rpb_dma_sys_lbk_set(struct aq_hw_s *aq_hw, u32 dma_sys_lbk);
 
+/* set dma network loopback */
+void hw_atl_rpb_dma_net_lbk_set(struct aq_hw_s *aq_hw, u32 dma_net_lbk);
+
 /* set rx traffic class mode */
 void hw_atl_rpb_rpf_rx_traf_class_mode_set(struct aq_hw_s *aq_hw,
 					   u32 rx_traf_class_mode);
@@ -629,6 +632,14 @@ void hw_atl_tpb_tx_buff_lo_threshold_per_tc_set(struct aq_hw_s *aq_hw,
 /* set tx dma system loopback enable */
 void hw_atl_tpb_tx_dma_sys_lbk_en_set(struct aq_hw_s *aq_hw, u32 tx_dma_sys_lbk_en);
 
+/* set tx dma network loopback enable */
+void hw_atl_tpb_tx_dma_net_lbk_en_set(struct aq_hw_s *aq_hw,
+				      u32 tx_dma_net_lbk_en);
+
+/* set tx clock gating enable */
+void hw_atl_tpb_tx_tx_clk_gate_en_set(struct aq_hw_s *aq_hw,
+				      u32 tx_clk_gate_en);
+
 /* set tx packet buffer size (per tc) */
 void hw_atl_tpb_tx_pkt_buff_size_per_tc_set(struct aq_hw_s *aq_hw,
 					    u32 tx_pkt_buff_size_per_tc,
diff --git a/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_llh_internal.h b/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_llh_internal.h
index ec3bcdcefc4d..18de2f7b8959 100644
--- a/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_llh_internal.h
+++ b/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_llh_internal.h
@@ -554,6 +554,24 @@
 /* default value of bitfield dma_sys_loopback */
 #define HW_ATL_RPB_DMA_SYS_LBK_DEFAULT 0x0
 
+/* rx dma_net_loopback bitfield definitions
+ * preprocessor definitions for the bitfield "dma_net_loopback".
+ * port="pif_rpb_dma_net_lbk_i"
+ */
+
+/* register address for bitfield dma_net_loopback */
+#define HW_ATL_RPB_DMA_NET_LBK_ADR 0x00005000
+/* bitmask for bitfield dma_net_loopback */
+#define HW_ATL_RPB_DMA_NET_LBK_MSK 0x00000010
+/* inverted bitmask for bitfield dma_net_loopback */
+#define HW_ATL_RPB_DMA_NET_LBK_MSKN 0xffffffef
+/* lower bit position of bitfield dma_net_loopback */
+#define HW_ATL_RPB_DMA_NET_LBK_SHIFT 4
+/* width of bitfield dma_net_loopback */
+#define HW_ATL_RPB_DMA_NET_LBK_WIDTH 1
+/* default value of bitfield dma_net_loopback */
+#define HW_ATL_RPB_DMA_NET_LBK_DEFAULT 0x0
+
 /* rx rx_tc_mode bitfield definitions
  * preprocessor definitions for the bitfield "rx_tc_mode".
  * port="pif_rpb_rx_tc_mode_i,pif_rpf_rx_tc_mode_i"
@@ -2107,6 +2125,24 @@
 /* default value of bitfield dma_sys_loopback */
 #define HW_ATL_TPB_DMA_SYS_LBK_DEFAULT 0x0
 
+/* tx dma_net_loopback bitfield definitions
+ * preprocessor definitions for the bitfield "dma_net_loopback".
+ * port="pif_tpb_dma_net_lbk_i"
+ */
+
+/* register address for bitfield dma_net_loopback */
+#define HW_ATL_TPB_DMA_NET_LBK_ADR 0x00007000
+/* bitmask for bitfield dma_net_loopback */
+#define HW_ATL_TPB_DMA_NET_LBK_MSK 0x00000010
+/* inverted bitmask for bitfield dma_net_loopback */
+#define HW_ATL_TPB_DMA_NET_LBK_MSKN 0xffffffef
+/* lower bit position of bitfield dma_net_loopback */
+#define HW_ATL_TPB_DMA_NET_LBK_SHIFT 4
+/* width of bitfield dma_net_loopback */
+#define HW_ATL_TPB_DMA_NET_LBK_WIDTH 1
+/* default value of bitfield dma_net_loopback */
+#define HW_ATL_TPB_DMA_NET_LBK_DEFAULT 0x0
+
 /* tx tx{b}_buf_size[7:0] bitfield definitions
  * preprocessor definitions for the bitfield "tx{b}_buf_size[7:0]".
  * parameter: buffer {b} | stride size 0x10 | range [0, 7]
@@ -2144,6 +2180,24 @@
 /* default value of bitfield tx_scp_ins_en */
 #define HW_ATL_TPB_TX_SCP_INS_EN_DEFAULT 0x0
 
+/* tx tx_clk_gate_en bitfield definitions
+ * preprocessor definitions for the bitfield "tx_clk_gate_en".
+ * port="pif_tpb_clk_gate_en_i"
+ */
+
+/* register address for bitfield tx_clk_gate_en */
+#define HW_ATL_TPB_TX_CLK_GATE_EN_ADR 0x00007900
+/* bitmask for bitfield tx_clk_gate_en */
+#define HW_ATL_TPB_TX_CLK_GATE_EN_MSK 0x00000010
+/* inverted bitmask for bitfield tx_clk_gate_en */
+#define HW_ATL_TPB_TX_CLK_GATE_EN_MSKN 0xffffffef
+/* lower bit position of bitfield tx_clk_gate_en */
+#define HW_ATL_TPB_TX_CLK_GATE_EN_SHIFT 4
+/* width of bitfield tx_clk_gate_en */
+#define HW_ATL_TPB_TX_CLK_GATE_EN_WIDTH 1
+/* default value of bitfield tx_clk_gate_en */
+#define HW_ATL_TPB_TX_CLK_GATE_EN_DEFAULT 0x1
+
 /* tx ipv4_chk_en bitfield definitions
  * preprocessor definitions for the bitfield "ipv4_chk_en".
  * port="pif_tpo_ipv4_chk_en_i"
diff --git a/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_utils_fw2x.c b/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_utils_fw2x.c
index 3dbce03c5a94..feef2b0177b2 100644
--- a/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_utils_fw2x.c
+++ b/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_utils_fw2x.c
@@ -42,6 +42,9 @@
 #define HW_ATL_FW2X_CTRL_PAUSE            BIT(CTRL_PAUSE)
 #define HW_ATL_FW2X_CTRL_TEMPERATURE      BIT(CTRL_TEMPERATURE)
 #define HW_ATL_FW2X_CTRL_ASYMMETRIC_PAUSE BIT(CTRL_ASYMMETRIC_PAUSE)
+#define HW_ATL_FW2X_CTRL_INT_LOOPBACK     BIT(CTRL_INT_LOOPBACK)
+#define HW_ATL_FW2X_CTRL_EXT_LOOPBACK     BIT(CTRL_EXT_LOOPBACK)
+#define HW_ATL_FW2X_CTRL_DOWNSHIFT        BIT(CTRL_DOWNSHIFT)
 #define HW_ATL_FW2X_CTRL_FORCE_RECONNECT  BIT(CTRL_FORCE_RECONNECT)
 
 #define HW_ATL_FW2X_CAP_EEE_1G_MASK      BIT(CAPS_HI_1000BASET_FD_EEE)
@@ -53,6 +56,7 @@
 #define HAL_ATLANTIC_UTILS_FW2X_MSG_WOL  0x0E
 
 #define HW_ATL_FW_VER_LED                0x03010026U
+#define HW_ATL_FW_VER_MEDIA_CONTROL      0x0301005aU
 
 struct __packed fw2x_msg_wol_pattern {
 	u8 mask[16];
@@ -539,6 +543,33 @@ static u32 aq_fw2x_get_flow_control(struct aq_hw_s *self, u32 *fcmode)
 	return 0;
 }
 
+static int aq_fw2x_set_phyloopback(struct aq_hw_s *self, u32 mode, bool enable)
+{
+	u32 mpi_opts;
+
+	switch (mode) {
+	case AQ_HW_LOOPBACK_PHYINT_SYS:
+		mpi_opts = aq_hw_read_reg(self, HW_ATL_FW2X_MPI_CONTROL2_ADDR);
+		if (enable)
+			mpi_opts |= HW_ATL_FW2X_CTRL_INT_LOOPBACK;
+		else
+			mpi_opts &= ~HW_ATL_FW2X_CTRL_INT_LOOPBACK;
+		aq_hw_write_reg(self, HW_ATL_FW2X_MPI_CONTROL2_ADDR, mpi_opts);
+		break;
+	case AQ_HW_LOOPBACK_PHYEXT_SYS:
+		mpi_opts = aq_hw_read_reg(self, HW_ATL_FW2X_MPI_CONTROL2_ADDR);
+		if (enable)
+			mpi_opts |= HW_ATL_FW2X_CTRL_EXT_LOOPBACK;
+		else
+			mpi_opts &= ~HW_ATL_FW2X_CTRL_EXT_LOOPBACK;
+		aq_hw_write_reg(self, HW_ATL_FW2X_MPI_CONTROL2_ADDR, mpi_opts);
+		break;
+	default:
+		return -EINVAL;
+	}
+	return 0;
+}
+
 static u32 aq_fw2x_mbox_get(struct aq_hw_s *self)
 {
 	return aq_hw_read_reg(self, HW_ATL_FW2X_MPI_MBOX_ADDR);
@@ -586,4 +617,5 @@ const struct aq_fw_ops aq_fw_2x_ops = {
 	.send_fw_request    = aq_fw2x_send_fw_request,
 	.enable_ptp         = aq_fw3x_enable_ptp,
 	.led_control        = aq_fw2x_led_control,
+	.set_phyloopback    = aq_fw2x_set_phyloopback,
 };