ice: rename TS_LL_READ* macros to REG_LL_PROXY_H_*

The TS_LL_READ macros are used as part of the low latency Tx timestamp
interface. A future firmware extension will add support for performing PHY
timer updates over this interface. Using TS_LL_READ as the prefix for these
macros will be confusing once the interface is used for other purposes.

Rename the macros, using the prefix REG_LL_PROXY_H, to better clarify that
this is for the low latency interface.
Additionally add macros for PF_SB_ATQBAH and PF_SB_ATQBAL registers to
better clarify content of this registers as PF_SB_ATQBAH contain low
part of Tx timestamp

Co-developed-by: Karol Kolacinski <karol.kolacinski@intel.com>
Signed-off-by: Karol Kolacinski <karol.kolacinski@intel.com>
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Reviewed-by: Milena Olech <milena.olech@intel.com>
Signed-off-by: Anton Nadezhdin <anton.nadezhdin@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

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

@@ -490,9 +490,9 @@ void ice_ptp_req_tx_single_tstamp(struct ice_ptp_tx *tx, u8 idx)
 	ice_trace(tx_tstamp_fw_req, tx->tstamps[idx].skb, idx);
 
 	/* Write TS index to read to the PF register so the FW can read it */
-	wr32(&pf->hw, PF_SB_ATQBAL,
-	     TS_LL_READ_TS_INTR | FIELD_PREP(TS_LL_READ_TS_IDX, idx) |
-	     TS_LL_READ_TS);
+	wr32(&pf->hw, REG_LL_PROXY_H,
+	     REG_LL_PROXY_H_TS_INTR_ENA | FIELD_PREP(REG_LL_PROXY_H_TS_IDX, idx) |
+	     REG_LL_PROXY_H_EXEC);
 	tx->last_ll_ts_idx_read = idx;
 }
 
@@ -519,20 +519,20 @@ void ice_ptp_complete_tx_single_tstamp(struct ice_ptp_tx *tx)
 
 	ice_trace(tx_tstamp_fw_done, tx->tstamps[idx].skb, idx);
 
-	val = rd32(&pf->hw, PF_SB_ATQBAL);
+	val = rd32(&pf->hw, REG_LL_PROXY_H);
 
 	/* When the bit is cleared, the TS is ready in the register */
-	if (val & TS_LL_READ_TS) {
+	if (val & REG_LL_PROXY_H_EXEC) {
 		dev_err(ice_pf_to_dev(pf), "Failed to get the Tx tstamp - FW not ready");
 		return;
 	}
 
 	/* High 8 bit value of the TS is on the bits 16:23 */
-	raw_tstamp = FIELD_GET(TS_LL_READ_TS_HIGH, val);
+	raw_tstamp = FIELD_GET(REG_LL_PROXY_H_TS_HIGH, val);
 	raw_tstamp <<= 32;
 
 	/* Read the low 32 bit value */
-	raw_tstamp |= (u64)rd32(&pf->hw, PF_SB_ATQBAH);
+	raw_tstamp |= (u64)rd32(&pf->hw, REG_LL_PROXY_L);
 
 	/* Devices using this interface always verify the timestamp differs
 	 * relative to the last cached timestamp value.

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

@@ -4861,24 +4861,24 @@ ice_read_phy_tstamp_ll_e810(struct ice_hw *hw, u8 idx, u8 *hi, u32 *lo)
 	int err;
 
 	/* Write TS index to read to the PF register so the FW can read it */
-	val = FIELD_PREP(TS_LL_READ_TS_IDX, idx) | TS_LL_READ_TS;
-	wr32(hw, PF_SB_ATQBAL, val);
+	val = FIELD_PREP(REG_LL_PROXY_H_TS_IDX, idx) | REG_LL_PROXY_H_EXEC;
+	wr32(hw, REG_LL_PROXY_H, val);
 
 	/* Read the register repeatedly until the FW provides us the TS */
 	err = read_poll_timeout_atomic(rd32, val,
-				       !FIELD_GET(TS_LL_READ_TS, val), 10,
-				       TS_LL_READ_TIMEOUT, false, hw,
-				       PF_SB_ATQBAL);
+				       !FIELD_GET(REG_LL_PROXY_H_EXEC, val), 10,
+				       REG_LL_PROXY_H_TIMEOUT_US, false, hw,
+				       REG_LL_PROXY_H);
 	if (err) {
 		ice_debug(hw, ICE_DBG_PTP, "Failed to read PTP timestamp using low latency read\n");
 		return err;
 	}
 
 	/* High 8 bit value of the TS is on the bits 16:23 */
-	*hi = FIELD_GET(TS_LL_READ_TS_HIGH, val);
+	*hi = FIELD_GET(REG_LL_PROXY_H_TS_HIGH, val);
 
 	/* Read the low 32 bit value and set the TS valid bit */
-	*lo = rd32(hw, PF_SB_ATQBAH) | TS_VALID;
+	*lo = rd32(hw, REG_LL_PROXY_L) | TS_VALID;
 
 	return 0;
 }

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

@@ -689,11 +689,14 @@ static inline bool ice_is_dual(struct ice_hw *hw)
 #define BYTES_PER_IDX_ADDR_L		4
 
 /* Tx timestamp low latency read definitions */
-#define TS_LL_READ_TIMEOUT		2000
-#define TS_LL_READ_TS_HIGH		GENMASK(23, 16)
-#define TS_LL_READ_TS_IDX		GENMASK(29, 24)
-#define TS_LL_READ_TS_INTR		BIT(30)
-#define TS_LL_READ_TS			BIT(31)
+#define REG_LL_PROXY_H_TIMEOUT_US	2000
+#define REG_LL_PROXY_H_TS_HIGH		GENMASK(23, 16)
+#define REG_LL_PROXY_H_TS_IDX		GENMASK(29, 24)
+#define REG_LL_PROXY_H_TS_INTR_ENA	BIT(30)
+#define REG_LL_PROXY_H_EXEC		BIT(31)
+
+#define REG_LL_PROXY_L			PF_SB_ATQBAH
+#define REG_LL_PROXY_H			PF_SB_ATQBAL
 
 /* Internal PHY timestamp address */
 #define TS_L(a, idx) ((a) + ((idx) * BYTES_PER_IDX_ADDR_L_U))