Merge branch '100GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/next-queue

Maciej Machnikowski says:

====================
100GbE Intel Wired LAN Driver Updates 2021-10-14

Extend the driver implementation to support PTP pins on E810-T
and derivative devices.

E810-T adapters are equipped with:
- 2 external bidirectional SMA connectors
- 1 internal TX U.FL shared with SMA1
- 1 internal RX U.FL shared with SMA2

The SMA and U.FL configuration is controlled by the external
multiplexer.

E810-T Derivatives are equipped with:
- 2 1PPS outputs on SDP20 and SDP22
- 2 1PPS inputs on SDP21 and SDP23
====================

Link: https://lore.kernel.org/r/20211014153531.2908804-1-anthony.l.nguyen@intel.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/ethernet/intel/ice/ice.h

@@ -163,6 +163,7 @@
 
 enum ice_feature {
 	ICE_F_DSCP,
+	ICE_F_SMA_CTRL,
 	ICE_F_MAX
 };
 

drivers/net/ethernet/intel/ice/ice_adminq_cmd.h

@@ -1279,7 +1279,7 @@ struct ice_aqc_set_mac_lb {
 	u8 reserved[15];
 };
 
-struct ice_aqc_link_topo_addr {
+struct ice_aqc_link_topo_params {
 	u8 lport_num;
 	u8 lport_num_valid;
 #define ICE_AQC_LINK_TOPO_PORT_NUM_VALID	BIT(0)
@@ -1305,6 +1305,10 @@ struct ice_aqc_link_topo_addr {
 #define ICE_AQC_LINK_TOPO_NODE_CTX_PROVIDED	4
 #define ICE_AQC_LINK_TOPO_NODE_CTX_OVERRIDE	5
 	u8 index;
+};
+
+struct ice_aqc_link_topo_addr {
+	struct ice_aqc_link_topo_params topo_params;
 	__le16 handle;
 #define ICE_AQC_LINK_TOPO_HANDLE_S	0
 #define ICE_AQC_LINK_TOPO_HANDLE_M	(0x3FF << ICE_AQC_LINK_TOPO_HANDLE_S)
@@ -1327,6 +1331,7 @@ struct ice_aqc_link_topo_addr {
 struct ice_aqc_get_link_topo {
 	struct ice_aqc_link_topo_addr addr;
 	u8 node_part_num;
+#define ICE_AQC_GET_LINK_TOPO_NODE_NR_PCA9575	0x21
 	u8 rsvd[9];
 };
 
@@ -1340,6 +1345,16 @@ struct ice_aqc_set_port_id_led {
 	u8 rsvd[13];
 };
 
+/* Set/Get GPIO (direct, 0x06EC/0x06ED) */
+struct ice_aqc_gpio {
+	__le16 gpio_ctrl_handle;
+#define ICE_AQC_GPIO_HANDLE_S	0
+#define ICE_AQC_GPIO_HANDLE_M	(0x3FF << ICE_AQC_GPIO_HANDLE_S)
+	u8 gpio_num;
+	u8 gpio_val;
+	u8 rsvd[12];
+};
+
 /* Read/Write SFF EEPROM command (indirect 0x06EE) */
 struct ice_aqc_sff_eeprom {
 	u8 lport_num;
@@ -1981,6 +1996,7 @@ struct ice_aq_desc {
 		struct ice_aqc_get_phy_caps get_phy;
 		struct ice_aqc_set_phy_cfg set_phy;
 		struct ice_aqc_restart_an restart_an;
+		struct ice_aqc_gpio read_write_gpio;
 		struct ice_aqc_sff_eeprom read_write_sff_param;
 		struct ice_aqc_set_port_id_led set_port_id_led;
 		struct ice_aqc_get_sw_cfg get_sw_conf;
@@ -2136,6 +2152,8 @@ enum ice_adminq_opc {
 	ice_aqc_opc_set_mac_lb				= 0x0620,
 	ice_aqc_opc_get_link_topo			= 0x06E0,
 	ice_aqc_opc_set_port_id_led			= 0x06E9,
+	ice_aqc_opc_set_gpio				= 0x06EC,
+	ice_aqc_opc_get_gpio				= 0x06ED,
 	ice_aqc_opc_sff_eeprom				= 0x06EE,
 
 	/* NVM commands */

drivers/net/ethernet/intel/ice/ice_common.c

@@ -69,6 +69,27 @@ bool ice_is_e810(struct ice_hw *hw)
 	return hw->mac_type == ICE_MAC_E810;
 }
 
+/**
+ * ice_is_e810t
+ * @hw: pointer to the hardware structure
+ *
+ * returns true if the device is E810T based, false if not.
+ */
+bool ice_is_e810t(struct ice_hw *hw)
+{
+	switch (hw->device_id) {
+	case ICE_DEV_ID_E810C_SFP:
+		if (hw->subsystem_device_id == ICE_SUBDEV_ID_E810T ||
+		    hw->subsystem_device_id == ICE_SUBDEV_ID_E810T2)
+			return true;
+		break;
+	default:
+		break;
+	}
+
+	return false;
+}
+
 /**
  * ice_clear_pf_cfg - Clear PF configuration
  * @hw: pointer to the hardware structure
@@ -240,11 +261,13 @@ ice_aq_get_link_topo_handle(struct ice_port_info *pi, u8 node_type,
 
 	ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_get_link_topo);
 
-	cmd->addr.node_type_ctx = (ICE_AQC_LINK_TOPO_NODE_CTX_PORT <<
+	cmd->addr.topo_params.node_type_ctx =
+		(ICE_AQC_LINK_TOPO_NODE_CTX_PORT <<
 		 ICE_AQC_LINK_TOPO_NODE_CTX_S);
 
 	/* set node type */
-	cmd->addr.node_type_ctx |= (ICE_AQC_LINK_TOPO_NODE_TYPE_M & node_type);
+	cmd->addr.topo_params.node_type_ctx |=
+		(ICE_AQC_LINK_TOPO_NODE_TYPE_M & node_type);
 
 	return ice_aq_send_cmd(pi->hw, &desc, NULL, 0, cd);
 }
@@ -4792,6 +4815,64 @@ ice_aq_get_driver_param(struct ice_hw *hw, enum ice_aqc_driver_params idx,
 	return 0;
 }
 
+/**
+ * ice_aq_set_gpio
+ * @hw: pointer to the hw struct
+ * @gpio_ctrl_handle: GPIO controller node handle
+ * @pin_idx: IO Number of the GPIO that needs to be set
+ * @value: SW provide IO value to set in the LSB
+ * @cd: pointer to command details structure or NULL
+ *
+ * Sends 0x06EC AQ command to set the GPIO pin state that's part of the topology
+ */
+int
+ice_aq_set_gpio(struct ice_hw *hw, u16 gpio_ctrl_handle, u8 pin_idx, bool value,
+		struct ice_sq_cd *cd)
+{
+	struct ice_aqc_gpio *cmd;
+	struct ice_aq_desc desc;
+
+	ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_set_gpio);
+	cmd = &desc.params.read_write_gpio;
+	cmd->gpio_ctrl_handle = cpu_to_le16(gpio_ctrl_handle);
+	cmd->gpio_num = pin_idx;
+	cmd->gpio_val = value ? 1 : 0;
+
+	return ice_status_to_errno(ice_aq_send_cmd(hw, &desc, NULL, 0, cd));
+}
+
+/**
+ * ice_aq_get_gpio
+ * @hw: pointer to the hw struct
+ * @gpio_ctrl_handle: GPIO controller node handle
+ * @pin_idx: IO Number of the GPIO that needs to be set
+ * @value: IO value read
+ * @cd: pointer to command details structure or NULL
+ *
+ * Sends 0x06ED AQ command to get the value of a GPIO signal which is part of
+ * the topology
+ */
+int
+ice_aq_get_gpio(struct ice_hw *hw, u16 gpio_ctrl_handle, u8 pin_idx,
+		bool *value, struct ice_sq_cd *cd)
+{
+	struct ice_aqc_gpio *cmd;
+	struct ice_aq_desc desc;
+	enum ice_status status;
+
+	ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_get_gpio);
+	cmd = &desc.params.read_write_gpio;
+	cmd->gpio_ctrl_handle = cpu_to_le16(gpio_ctrl_handle);
+	cmd->gpio_num = pin_idx;
+
+	status = ice_aq_send_cmd(hw, &desc, NULL, 0, cd);
+	if (status)
+		return ice_status_to_errno(status);
+
+	*value = !!cmd->gpio_val;
+	return 0;
+}
+
 /**
  * ice_fw_supports_link_override
  * @hw: pointer to the hardware structure

drivers/net/ethernet/intel/ice/ice_common.h

@@ -183,6 +183,7 @@ ice_stat_update40(struct ice_hw *hw, u32 reg, bool prev_stat_loaded,
 void
 ice_stat_update32(struct ice_hw *hw, u32 reg, bool prev_stat_loaded,
 		  u64 *prev_stat, u64 *cur_stat);
+bool ice_is_e810t(struct ice_hw *hw);
 enum ice_status
 ice_sched_query_elem(struct ice_hw *hw, u32 node_teid,
 		     struct ice_aqc_txsched_elem_data *buf);
@@ -192,6 +193,12 @@ ice_aq_set_driver_param(struct ice_hw *hw, enum ice_aqc_driver_params idx,
 int
 ice_aq_get_driver_param(struct ice_hw *hw, enum ice_aqc_driver_params idx,
 			u32 *value, struct ice_sq_cd *cd);
+int
+ice_aq_set_gpio(struct ice_hw *hw, u16 gpio_ctrl_handle, u8 pin_idx, bool value,
+		struct ice_sq_cd *cd);
+int
+ice_aq_get_gpio(struct ice_hw *hw, u16 gpio_ctrl_handle, u8 pin_idx,
+		bool *value, struct ice_sq_cd *cd);
 enum ice_status
 ice_aq_set_lldp_mib(struct ice_hw *hw, u8 mib_type, void *buf, u16 buf_size,
 		    struct ice_sq_cd *cd);

drivers/net/ethernet/intel/ice/ice_devids.h

@@ -21,6 +21,8 @@
 #define ICE_DEV_ID_E810C_QSFP		0x1592
 /* Intel(R) Ethernet Controller E810-C for SFP */
 #define ICE_DEV_ID_E810C_SFP		0x1593
+#define ICE_SUBDEV_ID_E810T		0x000E
+#define ICE_SUBDEV_ID_E810T2		0x000F
 /* Intel(R) Ethernet Controller E810-XXV for SFP */
 #define ICE_DEV_ID_E810_XXV_SFP		0x159B
 /* Intel(R) Ethernet Connection E823-C for backplane */

drivers/net/ethernet/intel/ice/ice_lib.c

@@ -3649,6 +3649,19 @@ static void ice_set_feature_support(struct ice_pf *pf, enum ice_feature f)
 	set_bit(f, pf->features);
 }
 
+/**
+ * ice_clear_feature_support
+ * @pf: pointer to the struct ice_pf instance
+ * @f: feature enum to clear
+ */
+void ice_clear_feature_support(struct ice_pf *pf, enum ice_feature f)
+{
+	if (f < 0 || f >= ICE_F_MAX)
+		return;
+
+	clear_bit(f, pf->features);
+}
+
 /**
  * ice_init_feature_support
  * @pf: pointer to the struct ice_pf instance
@@ -3662,6 +3675,8 @@ void ice_init_feature_support(struct ice_pf *pf)
 	case ICE_DEV_ID_E810C_QSFP:
 	case ICE_DEV_ID_E810C_SFP:
 		ice_set_feature_support(pf, ICE_F_DSCP);
+		if (ice_is_e810t(&pf->hw))
+			ice_set_feature_support(pf, ICE_F_SMA_CTRL);
 		break;
 	default:
 		break;

drivers/net/ethernet/intel/ice/ice_lib.h

@@ -129,5 +129,6 @@ void ice_vsi_ctx_set_allow_override(struct ice_vsi_ctx *ctx);
 void ice_vsi_ctx_clear_allow_override(struct ice_vsi_ctx *ctx);
 
 bool ice_is_feature_supported(struct ice_pf *pf, enum ice_feature f);
+void ice_clear_feature_support(struct ice_pf *pf, enum ice_feature f);
 void ice_init_feature_support(struct ice_pf *pf);
 #endif /* !_ICE_LIB_H_ */

drivers/net/ethernet/intel/ice/ice_ptp.h

@@ -9,12 +9,21 @@
 
 #include "ice_ptp_hw.h"
 
-enum ice_ptp_pin {
+enum ice_ptp_pin_e810 {
 	GPIO_20 = 0,
 	GPIO_21,
 	GPIO_22,
 	GPIO_23,
-	NUM_ICE_PTP_PIN
+	NUM_PTP_PIN_E810
+};
+
+enum ice_ptp_pin_e810t {
+	GNSS = 0,
+	SMA1,
+	UFL1,
+	SMA2,
+	UFL2,
+	NUM_PTP_PINS_E810T
 };
 
 struct ice_perout_channel {
@@ -155,8 +164,11 @@ struct ice_ptp {
 #define PPS_CLK_SRC_CHAN		2
 #define PPS_PIN_INDEX			5
 #define TIME_SYNC_PIN_INDEX		4
-#define E810_N_EXT_TS			3
-#define E810_N_PER_OUT			4
+#define N_EXT_TS_E810			3
+#define N_PER_OUT_E810			4
+#define N_PER_OUT_E810T			3
+#define N_PER_OUT_E810T_NO_SMA		2
+#define N_EXT_TS_E810_NO_SMA		2
 
 #if IS_ENABLED(CONFIG_PTP_1588_CLOCK)
 struct ice_pf;

drivers/net/ethernet/intel/ice/ice_ptp_hw.c

@@ -649,3 +649,154 @@ int ice_clear_phy_tstamp(struct ice_hw *hw, u8 block, u8 idx)
 {
 	return ice_clear_phy_tstamp_e810(hw, block, idx);
 }
+
+/* E810T SMA functions
+ *
+ * The following functions operate specifically on E810T hardware and are used
+ * to access the extended GPIOs available.
+ */
+
+/**
+ * ice_get_pca9575_handle
+ * @hw: pointer to the hw struct
+ * @pca9575_handle: GPIO controller's handle
+ *
+ * Find and return the GPIO controller's handle in the netlist.
+ * When found - the value will be cached in the hw structure and following calls
+ * will return cached value
+ */
+static int
+ice_get_pca9575_handle(struct ice_hw *hw, u16 *pca9575_handle)
+{
+	struct ice_aqc_get_link_topo *cmd;
+	struct ice_aq_desc desc;
+	int status;
+	u8 idx;
+
+	/* If handle was read previously return cached value */
+	if (hw->io_expander_handle) {
+		*pca9575_handle = hw->io_expander_handle;
+		return 0;
+	}
+
+	/* If handle was not detected read it from the netlist */
+	cmd = &desc.params.get_link_topo;
+	ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_get_link_topo);
+
+	/* Set node type to GPIO controller */
+	cmd->addr.topo_params.node_type_ctx =
+		(ICE_AQC_LINK_TOPO_NODE_TYPE_M &
+		 ICE_AQC_LINK_TOPO_NODE_TYPE_GPIO_CTRL);
+
+#define SW_PCA9575_SFP_TOPO_IDX		2
+#define SW_PCA9575_QSFP_TOPO_IDX	1
+
+	/* Check if the SW IO expander controlling SMA exists in the netlist. */
+	if (hw->device_id == ICE_DEV_ID_E810C_SFP)
+		idx = SW_PCA9575_SFP_TOPO_IDX;
+	else if (hw->device_id == ICE_DEV_ID_E810C_QSFP)
+		idx = SW_PCA9575_QSFP_TOPO_IDX;
+	else
+		return -EOPNOTSUPP;
+
+	cmd->addr.topo_params.index = idx;
+
+	status = ice_aq_send_cmd(hw, &desc, NULL, 0, NULL);
+	if (status)
+		return -EOPNOTSUPP;
+
+	/* Verify if we found the right IO expander type */
+	if (desc.params.get_link_topo.node_part_num !=
+		ICE_AQC_GET_LINK_TOPO_NODE_NR_PCA9575)
+		return -EOPNOTSUPP;
+
+	/* If present save the handle and return it */
+	hw->io_expander_handle =
+		le16_to_cpu(desc.params.get_link_topo.addr.handle);
+	*pca9575_handle = hw->io_expander_handle;
+
+	return 0;
+}
+
+/**
+ * ice_read_sma_ctrl_e810t
+ * @hw: pointer to the hw struct
+ * @data: pointer to data to be read from the GPIO controller
+ *
+ * Read the SMA controller state. It is connected to pins 3-7 of Port 1 of the
+ * PCA9575 expander, so only bits 3-7 in data are valid.
+ */
+int ice_read_sma_ctrl_e810t(struct ice_hw *hw, u8 *data)
+{
+	int status;
+	u16 handle;
+	u8 i;
+
+	status = ice_get_pca9575_handle(hw, &handle);
+	if (status)
+		return status;
+
+	*data = 0;
+
+	for (i = ICE_SMA_MIN_BIT_E810T; i <= ICE_SMA_MAX_BIT_E810T; i++) {
+		bool pin;
+
+		status = ice_aq_get_gpio(hw, handle, i + ICE_PCA9575_P1_OFFSET,
+					 &pin, NULL);
+		if (status)
+			break;
+		*data |= (u8)(!pin) << i;
+	}
+
+	return status;
+}
+
+/**
+ * ice_write_sma_ctrl_e810t
+ * @hw: pointer to the hw struct
+ * @data: data to be written to the GPIO controller
+ *
+ * Write the data to the SMA controller. It is connected to pins 3-7 of Port 1
+ * of the PCA9575 expander, so only bits 3-7 in data are valid.
+ */
+int ice_write_sma_ctrl_e810t(struct ice_hw *hw, u8 data)
+{
+	int status;
+	u16 handle;
+	u8 i;
+
+	status = ice_get_pca9575_handle(hw, &handle);
+	if (status)
+		return status;
+
+	for (i = ICE_SMA_MIN_BIT_E810T; i <= ICE_SMA_MAX_BIT_E810T; i++) {
+		bool pin;
+
+		pin = !(data & (1 << i));
+		status = ice_aq_set_gpio(hw, handle, i + ICE_PCA9575_P1_OFFSET,
+					 pin, NULL);
+		if (status)
+			break;
+	}
+
+	return status;
+}
+
+/**
+ * ice_is_pca9575_present
+ * @hw: pointer to the hw struct
+ *
+ * Check if the SW IO expander is present in the netlist
+ */
+bool ice_is_pca9575_present(struct ice_hw *hw)
+{
+	u16 handle = 0;
+	int status;
+
+	if (!ice_is_e810t(hw))
+		return false;
+
+	status = ice_get_pca9575_handle(hw, &handle);
+
+	return !status && handle;
+}

drivers/net/ethernet/intel/ice/ice_ptp_hw.h

@@ -30,6 +30,9 @@ int ice_clear_phy_tstamp(struct ice_hw *hw, u8 block, u8 idx);
 
 /* E810 family functions */
 int ice_ptp_init_phy_e810(struct ice_hw *hw);
+int ice_read_sma_ctrl_e810t(struct ice_hw *hw, u8 *data);
+int ice_write_sma_ctrl_e810t(struct ice_hw *hw, u8 data);
+bool ice_is_pca9575_present(struct ice_hw *hw);
 
 #define PFTSYN_SEM_BYTES	4
 
@@ -76,4 +79,23 @@ int ice_ptp_init_phy_e810(struct ice_hw *hw);
 #define LOW_TX_MEMORY_BANK_START	0x03090000
 #define HIGH_TX_MEMORY_BANK_START	0x03090004
 
+/* E810T SMA controller pin control */
+#define ICE_SMA1_DIR_EN_E810T		BIT(4)
+#define ICE_SMA1_TX_EN_E810T		BIT(5)
+#define ICE_SMA2_UFL2_RX_DIS_E810T	BIT(3)
+#define ICE_SMA2_DIR_EN_E810T		BIT(6)
+#define ICE_SMA2_TX_EN_E810T		BIT(7)
+
+#define ICE_SMA1_MASK_E810T	(ICE_SMA1_DIR_EN_E810T | \
+				 ICE_SMA1_TX_EN_E810T)
+#define ICE_SMA2_MASK_E810T	(ICE_SMA2_UFL2_RX_DIS_E810T | \
+				 ICE_SMA2_DIR_EN_E810T | \
+				 ICE_SMA2_TX_EN_E810T)
+#define ICE_ALL_SMA_MASK_E810T	(ICE_SMA1_MASK_E810T | \
+				 ICE_SMA2_MASK_E810T)
+
+#define ICE_SMA_MIN_BIT_E810T	3
+#define ICE_SMA_MAX_BIT_E810T	7
+#define ICE_PCA9575_P1_OFFSET	8
+
 #endif /* _ICE_PTP_HW_H_ */

drivers/net/ethernet/intel/ice/ice_type.h

@@ -916,6 +916,7 @@ struct ice_hw {
 	struct mutex rss_locks;	/* protect RSS configuration */
 	struct list_head rss_list_head;
 	struct ice_mbx_snapshot mbx_snapshot;
+	u16 io_expander_handle;
 };
 
 /* Statistics collected by each port, VSI, VEB, and S-channel */