ice: process 1588 PTP capabilities during initialization

The device firmware reports PTP clock capabilities to each PF during
initialization. This includes various information for both the overall
device and the individual function, including

For functions:
* whether this function has timesync enabled
* whether this function owns one of the 2 possible clock timers, and
  which one
* which timer the function is associated with
* the clock frequency, if the device supports multiple clock frequencies
* The GPIO pin association for the timer owned by this PF, if any

For the device:
* Which PF owns timer 0, if any
* Which PF owns timer 1, if any
* whether timer 0 is enabled
* whether timer 1 is enabled

Extract the bits from the capabilities information reported by firmware
and store them in the device and function capability structures.o

This information will be used in a future change to have the function
driver enable PTP hardware clock support.
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Tony Brelinski <tonyx.brelinski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

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

@@ -108,6 +108,7 @@ struct ice_aqc_list_caps_elem {
 #define ICE_AQC_CAPS_TXQS				0x0042
 #define ICE_AQC_CAPS_MSIX				0x0043
 #define ICE_AQC_CAPS_FD					0x0045
+#define ICE_AQC_CAPS_1588				0x0046
 #define ICE_AQC_CAPS_MAX_MTU				0x0047
 #define ICE_AQC_CAPS_NVM_VER				0x0048
 #define ICE_AQC_CAPS_PENDING_NVM_VER			0x0049

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

@@ -2092,6 +2092,48 @@ ice_parse_vsi_func_caps(struct ice_hw *hw, struct ice_hw_func_caps *func_p,
 		  func_p->guar_num_vsi);
 }
 
+/**
+ * ice_parse_1588_func_caps - Parse ICE_AQC_CAPS_1588 function caps
+ * @hw: pointer to the HW struct
+ * @func_p: pointer to function capabilities structure
+ * @cap: pointer to the capability element to parse
+ *
+ * Extract function capabilities for ICE_AQC_CAPS_1588.
+ */
+static void
+ice_parse_1588_func_caps(struct ice_hw *hw, struct ice_hw_func_caps *func_p,
+			 struct ice_aqc_list_caps_elem *cap)
+{
+	struct ice_ts_func_info *info = &func_p->ts_func_info;
+	u32 number = le32_to_cpu(cap->number);
+
+	info->ena = ((number & ICE_TS_FUNC_ENA_M) != 0);
+	func_p->common_cap.ieee_1588 = info->ena;
+
+	info->src_tmr_owned = ((number & ICE_TS_SRC_TMR_OWND_M) != 0);
+	info->tmr_ena = ((number & ICE_TS_TMR_ENA_M) != 0);
+	info->tmr_index_owned = ((number & ICE_TS_TMR_IDX_OWND_M) != 0);
+	info->tmr_index_assoc = ((number & ICE_TS_TMR_IDX_ASSOC_M) != 0);
+
+	info->clk_freq = (number & ICE_TS_CLK_FREQ_M) >> ICE_TS_CLK_FREQ_S;
+	info->clk_src = ((number & ICE_TS_CLK_SRC_M) != 0);
+
+	ice_debug(hw, ICE_DBG_INIT, "func caps: ieee_1588 = %u\n",
+		  func_p->common_cap.ieee_1588);
+	ice_debug(hw, ICE_DBG_INIT, "func caps: src_tmr_owned = %u\n",
+		  info->src_tmr_owned);
+	ice_debug(hw, ICE_DBG_INIT, "func caps: tmr_ena = %u\n",
+		  info->tmr_ena);
+	ice_debug(hw, ICE_DBG_INIT, "func caps: tmr_index_owned = %u\n",
+		  info->tmr_index_owned);
+	ice_debug(hw, ICE_DBG_INIT, "func caps: tmr_index_assoc = %u\n",
+		  info->tmr_index_assoc);
+	ice_debug(hw, ICE_DBG_INIT, "func caps: clk_freq = %u\n",
+		  info->clk_freq);
+	ice_debug(hw, ICE_DBG_INIT, "func caps: clk_src = %u\n",
+		  info->clk_src);
+}
+
 /**
  * ice_parse_fdir_func_caps - Parse ICE_AQC_CAPS_FD function caps
  * @hw: pointer to the HW struct
@@ -2158,6 +2200,9 @@ ice_parse_func_caps(struct ice_hw *hw, struct ice_hw_func_caps *func_p,
 		case ICE_AQC_CAPS_VSI:
 			ice_parse_vsi_func_caps(hw, func_p, &cap_resp[i]);
 			break;
+		case ICE_AQC_CAPS_1588:
+			ice_parse_1588_func_caps(hw, func_p, &cap_resp[i]);
+			break;
 		case ICE_AQC_CAPS_FD:
 			ice_parse_fdir_func_caps(hw, func_p);
 			break;
@@ -2230,6 +2275,57 @@ ice_parse_vsi_dev_caps(struct ice_hw *hw, struct ice_hw_dev_caps *dev_p,
 		  dev_p->num_vsi_allocd_to_host);
 }
 
+/**
+ * ice_parse_1588_dev_caps - Parse ICE_AQC_CAPS_1588 device caps
+ * @hw: pointer to the HW struct
+ * @dev_p: pointer to device capabilities structure
+ * @cap: capability element to parse
+ *
+ * Parse ICE_AQC_CAPS_1588 for device capabilities.
+ */
+static void
+ice_parse_1588_dev_caps(struct ice_hw *hw, struct ice_hw_dev_caps *dev_p,
+			struct ice_aqc_list_caps_elem *cap)
+{
+	struct ice_ts_dev_info *info = &dev_p->ts_dev_info;
+	u32 logical_id = le32_to_cpu(cap->logical_id);
+	u32 phys_id = le32_to_cpu(cap->phys_id);
+	u32 number = le32_to_cpu(cap->number);
+
+	info->ena = ((number & ICE_TS_DEV_ENA_M) != 0);
+	dev_p->common_cap.ieee_1588 = info->ena;
+
+	info->tmr0_owner = number & ICE_TS_TMR0_OWNR_M;
+	info->tmr0_owned = ((number & ICE_TS_TMR0_OWND_M) != 0);
+	info->tmr0_ena = ((number & ICE_TS_TMR0_ENA_M) != 0);
+
+	info->tmr1_owner = (number & ICE_TS_TMR1_OWNR_M) >> ICE_TS_TMR1_OWNR_S;
+	info->tmr1_owned = ((number & ICE_TS_TMR1_OWND_M) != 0);
+	info->tmr1_ena = ((number & ICE_TS_TMR1_ENA_M) != 0);
+
+	info->ena_ports = logical_id;
+	info->tmr_own_map = phys_id;
+
+	ice_debug(hw, ICE_DBG_INIT, "dev caps: ieee_1588 = %u\n",
+		  dev_p->common_cap.ieee_1588);
+	ice_debug(hw, ICE_DBG_INIT, "dev caps: tmr0_owner = %u\n",
+		  info->tmr0_owner);
+	ice_debug(hw, ICE_DBG_INIT, "dev caps: tmr0_owned = %u\n",
+		  info->tmr0_owned);
+	ice_debug(hw, ICE_DBG_INIT, "dev caps: tmr0_ena = %u\n",
+		  info->tmr0_ena);
+	ice_debug(hw, ICE_DBG_INIT, "dev caps: tmr1_owner = %u\n",
+		  info->tmr1_owner);
+	ice_debug(hw, ICE_DBG_INIT, "dev caps: tmr1_owned = %u\n",
+		  info->tmr1_owned);
+	ice_debug(hw, ICE_DBG_INIT, "dev caps: tmr1_ena = %u\n",
+		  info->tmr1_ena);
+	ice_debug(hw, ICE_DBG_INIT, "dev caps: ieee_1588 ena_ports = %u\n",
+		  info->ena_ports);
+	ice_debug(hw, ICE_DBG_INIT, "dev caps: tmr_own_map = %u\n",
+		  info->tmr_own_map);
+}
+
 /**
  * ice_parse_fdir_dev_caps - Parse ICE_AQC_CAPS_FD device caps
  * @hw: pointer to the HW struct
@@ -2291,6 +2387,9 @@ ice_parse_dev_caps(struct ice_hw *hw, struct ice_hw_dev_caps *dev_p,
 		case ICE_AQC_CAPS_VSI:
 			ice_parse_vsi_dev_caps(hw, dev_p, &cap_resp[i]);
 			break;
+		case ICE_AQC_CAPS_1588:
+			ice_parse_1588_dev_caps(hw, dev_p, &cap_resp[i]);
+			break;
 		case  ICE_AQC_CAPS_FD:
 			ice_parse_fdir_dev_caps(hw, dev_p, &cap_resp[i]);
 			break;

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

@@ -265,6 +265,7 @@ struct ice_hw_common_caps {
 	u8 rss_table_entry_width;	/* RSS Entry width in bits */
 
 	u8 dcb;
+	u8 ieee_1588;
 	u8 rdma;
 
 	bool nvm_update_pending_nvm;
@@ -277,6 +278,54 @@ struct ice_hw_common_caps {
 #define ICE_NVM_MGMT_UNIFIED_UPD_SUPPORT	BIT(3)
 };
 
+/* IEEE 1588 TIME_SYNC specific info */
+/* Function specific definitions */
+#define ICE_TS_FUNC_ENA_M		BIT(0)
+#define ICE_TS_SRC_TMR_OWND_M		BIT(1)
+#define ICE_TS_TMR_ENA_M		BIT(2)
+#define ICE_TS_TMR_IDX_OWND_S		4
+#define ICE_TS_TMR_IDX_OWND_M		BIT(4)
+#define ICE_TS_CLK_FREQ_S		16
+#define ICE_TS_CLK_FREQ_M		ICE_M(0x7, ICE_TS_CLK_FREQ_S)
+#define ICE_TS_CLK_SRC_S		20
+#define ICE_TS_CLK_SRC_M		BIT(20)
+#define ICE_TS_TMR_IDX_ASSOC_S		24
+#define ICE_TS_TMR_IDX_ASSOC_M		BIT(24)
+
+struct ice_ts_func_info {
+	/* Function specific info */
+	u32 clk_freq;
+	u8 clk_src;
+	u8 tmr_index_assoc;
+	u8 ena;
+	u8 tmr_index_owned;
+	u8 src_tmr_owned;
+	u8 tmr_ena;
+};
+
+/* Device specific definitions */
+#define ICE_TS_TMR0_OWNR_M		0x7
+#define ICE_TS_TMR0_OWND_M		BIT(3)
+#define ICE_TS_TMR1_OWNR_S		4
+#define ICE_TS_TMR1_OWNR_M		ICE_M(0x7, ICE_TS_TMR1_OWNR_S)
+#define ICE_TS_TMR1_OWND_M		BIT(7)
+#define ICE_TS_DEV_ENA_M		BIT(24)
+#define ICE_TS_TMR0_ENA_M		BIT(25)
+#define ICE_TS_TMR1_ENA_M		BIT(26)
+
+struct ice_ts_dev_info {
+	/* Device specific info */
+	u32 ena_ports;
+	u32 tmr_own_map;
+	u32 tmr0_owner;
+	u32 tmr1_owner;
+	u8 tmr0_owned;
+	u8 tmr1_owned;
+	u8 ena;
+	u8 tmr0_ena;
+	u8 tmr1_ena;
+};
+
 /* Function specific capabilities */
 struct ice_hw_func_caps {
 	struct ice_hw_common_caps common_cap;
@@ -285,6 +334,7 @@ struct ice_hw_func_caps {
 	u32 guar_num_vsi;
 	u32 fd_fltr_guar;		/* Number of filters guaranteed */
 	u32 fd_fltr_best_effort;	/* Number of best effort filters */
+	struct ice_ts_func_info ts_func_info;
 };
 
 /* Device wide capabilities */
@@ -293,6 +343,7 @@ struct ice_hw_dev_caps {
 	u32 num_vfs_exposed;		/* Total number of VFs exposed */
 	u32 num_vsi_allocd_to_host;	/* Excluding EMP VSI */
 	u32 num_flow_director_fltr;	/* Number of FD filters available */
+	struct ice_ts_dev_info ts_dev_info;
 	u32 num_funcs;
 };