wifi: iwlwifi: unify iwlagn_scd_bc_tbl_entry and iwl_gen3_bc_tbl_entry

As those are now the same, unify and adjust the documentation.

Reviewed-by: Johannes Berg <[email protected]>
Signed-off-by: Miri Korenblit <[email protected]>
Link: https://patch.msgid.link/20250511195137.b7ddfade8fec.I2bf97252c4bd751077ade204767eed02d815614d@changeid

Author: Miriam-Rachel

drivers/net/wireless/intel/iwlwifi/iwl-fh.h

@@ -717,30 +717,19 @@ struct iwl_tfh_tfd {
 /* Fixed (non-configurable) rx data from phy */
 
 /**
- * struct iwlagn_scd_bc_tbl_entry - scheduler byte count table entry
+ * struct iwl_bc_tbl_entry - scheduler byte count table entry
  *	base physical address provided by SCD_DRAM_BASE_ADDR
  * For devices up to 22000:
  * @tfd_offset:
  *	For devices up to 22000:
  *		 0-12 - tx command byte count
  *		12-16 - station index
- *	For 22000:
+ *	For 22000 and on:
  *		 0-12 - tx command byte count
  *		12-13 - number of 64 byte chunks
  *		14-16 - reserved
  */
-struct iwlagn_scd_bc_tbl_entry {
-	__le16 tfd_offset;
-} __packed;
-
-/**
- * struct iwl_gen3_bc_tbl_entry - scheduler byte count table entry gen3
- * For AX210 and on:
- * @tfd_offset: 0-12 - tx command byte count
- *		12-13 - number of 64 byte chunks
- *		14-16 - reserved
- */
-struct iwl_gen3_bc_tbl_entry {
+struct iwl_bc_tbl_entry {
 	__le16 tfd_offset;
 } __packed;
 

drivers/net/wireless/intel/iwlwifi/pcie/trans.c

@@ -3785,6 +3785,7 @@ iwl_trans_pcie_alloc(struct pci_dev *pdev,
 {
 	struct iwl_trans_pcie *trans_pcie, **priv;
 	struct iwl_trans *trans;
+	unsigned int bc_tbl_n_entries;
 	int ret, addr_size;
 	u32 bar0;
 
@@ -3833,14 +3834,14 @@ iwl_trans_pcie_alloc(struct pci_dev *pdev,
 	}
 
 	if (trans->mac_cfg->device_family >= IWL_DEVICE_FAMILY_BZ)
-		trans_pcie->txqs.bc_tbl_size =
-			sizeof(struct iwl_gen3_bc_tbl_entry) * TFD_QUEUE_BC_SIZE_BZ;
+		bc_tbl_n_entries = TFD_QUEUE_BC_SIZE_BZ;
 	else if (trans->mac_cfg->device_family >= IWL_DEVICE_FAMILY_AX210)
-		trans_pcie->txqs.bc_tbl_size =
-			sizeof(struct iwl_gen3_bc_tbl_entry) * TFD_QUEUE_BC_SIZE_AX210;
+		bc_tbl_n_entries = TFD_QUEUE_BC_SIZE_AX210;
 	else
-		trans_pcie->txqs.bc_tbl_size =
-			sizeof(struct iwlagn_scd_bc_tbl_entry) * TFD_QUEUE_BC_SIZE;
+		bc_tbl_n_entries = TFD_QUEUE_BC_SIZE;
+
+	trans_pcie->txqs.bc_tbl_size =
+		sizeof(struct iwl_bc_tbl_entry) * bc_tbl_n_entries;
 	/*
 	 * For gen2 devices, we use a single allocation for each byte-count
 	 * table, but they're pretty small (1k) so use a DMA pool that we

drivers/net/wireless/intel/iwlwifi/pcie/tx-gen2.c

@@ -561,6 +561,7 @@ static void iwl_pcie_gen2_update_byte_tbl(struct iwl_trans *trans,
 					  int num_tbs)
 {
 	int idx = iwl_txq_get_cmd_index(txq, txq->write_ptr);
+	struct iwl_bc_tbl_entry *scd_bc_tbl = txq->bc_tbl.addr;
 	u8 filled_tfd_size, num_fetch_chunks;
 	u16 len = byte_cnt;
 	__le16 bc_ent;
@@ -581,19 +582,15 @@ static void iwl_pcie_gen2_update_byte_tbl(struct iwl_trans *trans,
 	num_fetch_chunks = DIV_ROUND_UP(filled_tfd_size, 64) - 1;
 
 	if (trans->mac_cfg->device_family >= IWL_DEVICE_FAMILY_AX210) {
-		struct iwl_gen3_bc_tbl_entry *scd_bc_tbl_gen3 = txq->bc_tbl.addr;
-
 		WARN_ON(len > 0x3FFF);
 		bc_ent = cpu_to_le16(len | (num_fetch_chunks << 14));
-		scd_bc_tbl_gen3[idx].tfd_offset = bc_ent;
 	} else {
-		struct iwlagn_scd_bc_tbl_entry *scd_bc_tbl = txq->bc_tbl.addr;
-
 		len = DIV_ROUND_UP(len, 4);
 		WARN_ON(len > 0xFFF);
 		bc_ent = cpu_to_le16(len | (num_fetch_chunks << 12));
-		scd_bc_tbl[idx].tfd_offset = bc_ent;
 	}
+
+	scd_bc_tbl[idx].tfd_offset = bc_ent;
 }
 
 static u8 iwl_txq_gen2_get_num_tbs(struct iwl_tfh_tfd *tfd)

drivers/net/wireless/intel/iwlwifi/pcie/tx.c

@@ -796,7 +796,7 @@ int iwl_pcie_txq_alloc(struct iwl_trans *trans, struct iwl_txq *txq,
 	return -ENOMEM;
 }
 
-#define BC_TABLE_SIZE	(sizeof(struct iwlagn_scd_bc_tbl_entry) * TFD_QUEUE_BC_SIZE)
+#define BC_TABLE_SIZE	(sizeof(struct iwl_bc_tbl_entry) * TFD_QUEUE_BC_SIZE)
 
 /*
  * iwl_pcie_tx_alloc - allocate TX context
@@ -2067,7 +2067,7 @@ static void iwl_txq_gen1_update_byte_cnt_tbl(struct iwl_trans *trans,
 					     int num_tbs)
 {
 	struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
-	struct iwlagn_scd_bc_tbl_entry *scd_bc_tbl;
+	struct iwl_bc_tbl_entry *scd_bc_tbl;
 	int write_ptr = txq->write_ptr;
 	int txq_id = txq->id;
 	u8 sec_ctl = 0;
@@ -2314,7 +2314,7 @@ static void iwl_txq_gen1_inval_byte_cnt_tbl(struct iwl_trans *trans,
 					    int read_ptr)
 {
 	struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
-	struct iwlagn_scd_bc_tbl_entry *scd_bc_tbl = trans_pcie->txqs.scd_bc_tbls.addr;
+	struct iwl_bc_tbl_entry *scd_bc_tbl = trans_pcie->txqs.scd_bc_tbls.addr;
 	int txq_id = txq->id;
 	u8 sta_id = 0;
 	__le16 bc_ent;