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[PATCH net-next v3 04/14] net: ethernet: oa_tc6: Move constant definitions to header file

From: Selvamani Rajagopal <hidden>
Date: 2026-05-29 18:39:54
Also in: lkml
Subsystem: networking drivers, the rest · Maintainers: Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds

To prepare for other files to share the constant definitions, moving
them from the source file to its own header file.

Signed-off-by: Selvamani Rajagopal <redacted>
---
 drivers/net/ethernet/oa_tc6/oa_tc6.c         | 145 +---------------
 drivers/net/ethernet/oa_tc6/oa_tc6_std_def.h | 166 +++++++++++++++++++
 2 files changed, 167 insertions(+), 144 deletions(-)
 create mode 100644 drivers/net/ethernet/oa_tc6/oa_tc6_std_def.h
diff --git a/drivers/net/ethernet/oa_tc6/oa_tc6.c b/drivers/net/ethernet/oa_tc6/oa_tc6.c
index 91a906a7918a..c7d70d37ba53 100644
--- a/drivers/net/ethernet/oa_tc6/oa_tc6.c
+++ b/drivers/net/ethernet/oa_tc6/oa_tc6.c
@@ -11,150 +11,7 @@
 #include <linux/phy.h>
 #include <linux/oa_tc6.h>
 
-/* OPEN Alliance TC6 registers */
-/* Standard Capabilities Register */
-#define OA_TC6_REG_STDCAP			0x0002
-#define STDCAP_DIRECT_PHY_REG_ACCESS		BIT(8)
-
-/* Reset Control and Status Register */
-#define OA_TC6_REG_RESET			0x0003
-#define RESET_SWRESET				BIT(0)	/* Software Reset */
-
-/* Configuration Register #0 */
-#define OA_TC6_REG_CONFIG0			0x0004
-#define CONFIG0_SYNC				BIT(15)
-#define CONFIG0_ZARFE_ENABLE			BIT(12)
-
-/* Status Register #0 */
-#define OA_TC6_REG_STATUS0			0x0008
-#define STATUS0_RESETC				BIT(6)	/* Reset Complete */
-#define STATUS0_HEADER_ERROR			BIT(5)
-#define STATUS0_LOSS_OF_FRAME_ERROR		BIT(4)
-#define STATUS0_RX_BUFFER_OVERFLOW_ERROR	BIT(3)
-#define STATUS0_TX_PROTOCOL_ERROR		BIT(0)
-
-/* Buffer Status Register */
-#define OA_TC6_REG_BUFFER_STATUS		0x000B
-#define BUFFER_STATUS_TX_CREDITS_AVAILABLE	GENMASK(15, 8)
-#define BUFFER_STATUS_RX_CHUNKS_AVAILABLE	GENMASK(7, 0)
-
-/* Interrupt Mask Register #0 */
-#define OA_TC6_REG_INT_MASK0			0x000C
-#define INT_MASK0_HEADER_ERR_MASK		BIT(5)
-#define INT_MASK0_LOSS_OF_FRAME_ERR_MASK	BIT(4)
-#define INT_MASK0_RX_BUFFER_OVERFLOW_ERR_MASK	BIT(3)
-#define INT_MASK0_TX_PROTOCOL_ERR_MASK		BIT(0)
-
-/* PHY Clause 22 registers base address and mask */
-#define OA_TC6_PHY_STD_REG_ADDR_BASE		0xFF00
-#define OA_TC6_PHY_STD_REG_ADDR_MASK		0x1F
-
-/* Control command header */
-#define OA_TC6_CTRL_HEADER_DATA_NOT_CTRL	BIT(31)
-#define OA_TC6_CTRL_HEADER_WRITE_NOT_READ	BIT(29)
-#define OA_TC6_CTRL_HEADER_MEM_MAP_SELECTOR	GENMASK(27, 24)
-#define OA_TC6_CTRL_HEADER_ADDR			GENMASK(23, 8)
-#define OA_TC6_CTRL_HEADER_LENGTH		GENMASK(7, 1)
-#define OA_TC6_CTRL_HEADER_PARITY		BIT(0)
-
-/* Data header */
-#define OA_TC6_DATA_HEADER_DATA_NOT_CTRL	BIT(31)
-#define OA_TC6_DATA_HEADER_DATA_VALID		BIT(21)
-#define OA_TC6_DATA_HEADER_START_VALID		BIT(20)
-#define OA_TC6_DATA_HEADER_START_WORD_OFFSET	GENMASK(19, 16)
-#define OA_TC6_DATA_HEADER_END_VALID		BIT(14)
-#define OA_TC6_DATA_HEADER_END_BYTE_OFFSET	GENMASK(13, 8)
-#define OA_TC6_DATA_HEADER_PARITY		BIT(0)
-
-/* Data footer */
-#define OA_TC6_DATA_FOOTER_EXTENDED_STS		BIT(31)
-#define OA_TC6_DATA_FOOTER_RXD_HEADER_BAD	BIT(30)
-#define OA_TC6_DATA_FOOTER_CONFIG_SYNC		BIT(29)
-#define OA_TC6_DATA_FOOTER_RX_CHUNKS		GENMASK(28, 24)
-#define OA_TC6_DATA_FOOTER_DATA_VALID		BIT(21)
-#define OA_TC6_DATA_FOOTER_START_VALID		BIT(20)
-#define OA_TC6_DATA_FOOTER_START_WORD_OFFSET	GENMASK(19, 16)
-#define OA_TC6_DATA_FOOTER_END_VALID		BIT(14)
-#define OA_TC6_DATA_FOOTER_END_BYTE_OFFSET	GENMASK(13, 8)
-#define OA_TC6_DATA_FOOTER_TX_CREDITS		GENMASK(5, 1)
-
-/* PHY – Clause 45 registers memory map selector (MMS) as per table 6 in the
- * OPEN Alliance specification.
- */
-#define OA_TC6_PHY_C45_PCS_MMS2			2	/* MMD 3 */
-#define OA_TC6_PHY_C45_PMA_PMD_MMS3		3	/* MMD 1 */
-#define OA_TC6_PHY_C45_VS_PLCA_MMS4		4	/* MMD 31 */
-#define OA_TC6_PHY_C45_AUTO_NEG_MMS5		5	/* MMD 7 */
-#define OA_TC6_PHY_C45_POWER_UNIT_MMS6		6	/* MMD 13 */
-
-#define OA_TC6_CTRL_HEADER_SIZE			4
-#define OA_TC6_CTRL_REG_VALUE_SIZE		4
-#define OA_TC6_CTRL_IGNORED_SIZE		4
-#define OA_TC6_CTRL_MAX_REGISTERS		128
-#define OA_TC6_CTRL_SPI_BUF_SIZE		(OA_TC6_CTRL_HEADER_SIZE +\
-						(OA_TC6_CTRL_MAX_REGISTERS *\
-						OA_TC6_CTRL_REG_VALUE_SIZE) +\
-						OA_TC6_CTRL_IGNORED_SIZE)
-#define OA_TC6_CHUNK_PAYLOAD_SIZE		64
-#define OA_TC6_DATA_HEADER_SIZE			4
-#define OA_TC6_CHUNK_SIZE			(OA_TC6_DATA_HEADER_SIZE +\
-						OA_TC6_CHUNK_PAYLOAD_SIZE)
-#define OA_TC6_MAX_TX_CHUNKS			48
-#define OA_TC6_SPI_DATA_BUF_SIZE		(OA_TC6_MAX_TX_CHUNKS *\
-						OA_TC6_CHUNK_SIZE)
-#define STATUS0_RESETC_POLL_DELAY		1000
-#define STATUS0_RESETC_POLL_TIMEOUT		1000000
-
-/* Internal structure for MAC-PHY drivers */
-struct oa_tc6 {
-	struct device *dev;
-	struct net_device *netdev;
-	struct phy_device *phydev;
-	struct mii_bus *mdiobus;
-	struct spi_device *spi;
-	struct mutex spi_ctrl_lock; /* Protects spi control transfer */
-	spinlock_t tx_skb_lock; /* Protects tx skb handling */
-	void *spi_ctrl_tx_buf;
-	void *spi_ctrl_rx_buf;
-	void *spi_data_tx_buf;
-	void *spi_data_rx_buf;
-	struct sk_buff *ongoing_tx_skb;
-	struct sk_buff *waiting_tx_skb;
-	struct sk_buff *rx_skb;
-	struct task_struct *spi_thread;
-	wait_queue_head_t spi_wq;
-	u16 tx_skb_offset;
-	u16 spi_data_tx_buf_offset;
-	u16 tx_credits;
-	u8 rx_chunks_available;
-	bool rx_buf_overflow;
-	bool int_flag;
-};
-
-enum oa_tc6_header_type {
-	OA_TC6_CTRL_HEADER,
-	OA_TC6_DATA_HEADER,
-};
-
-enum oa_tc6_register_op {
-	OA_TC6_CTRL_REG_READ = 0,
-	OA_TC6_CTRL_REG_WRITE = 1,
-};
-
-enum oa_tc6_data_valid_info {
-	OA_TC6_DATA_INVALID,
-	OA_TC6_DATA_VALID,
-};
-
-enum oa_tc6_data_start_valid_info {
-	OA_TC6_DATA_START_INVALID,
-	OA_TC6_DATA_START_VALID,
-};
-
-enum oa_tc6_data_end_valid_info {
-	OA_TC6_DATA_END_INVALID,
-	OA_TC6_DATA_END_VALID,
-};
+#include "oa_tc6_std_def.h"
 
 static int oa_tc6_spi_transfer(struct oa_tc6 *tc6,
 			       enum oa_tc6_header_type header_type, u16 length)
diff --git a/drivers/net/ethernet/oa_tc6/oa_tc6_std_def.h b/drivers/net/ethernet/oa_tc6/oa_tc6_std_def.h
new file mode 100644
index 000000000000..fdde9ba719bf
--- /dev/null
+++ b/drivers/net/ethernet/oa_tc6/oa_tc6_std_def.h
@@ -0,0 +1,166 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Register and driver related definitions to support
+ * OPEN Alliance 10BASE‑T1x MAC‑PHY Serial Interface framework.
+ *
+ * Author: Selva Rajagopal <selvamani.rajagopal@onsemi.com>
+ */
+
+#ifndef OA_TC6_STD_DEF_H
+#define OA_TC6_STD_DEF_H
+
+#include <linux/ptp_clock_kernel.h>
+#include <linux/net_tstamp.h>
+#include <linux/netdevice.h>
+#include <linux/spi/spi.h>
+#include <linux/skbuff.h>
+#include <linux/sched.h>
+#include <linux/wait.h>
+#include <linux/phy.h>
+
+/* OPEN Alliance TC6 registers */
+/* Standard Capabilities Register */
+#define OA_TC6_REG_STDCAP			0x0002
+#define STDCAP_DIRECT_PHY_REG_ACCESS		BIT(8)
+
+/* Reset Control and Status Register */
+#define OA_TC6_REG_RESET			0x0003
+#define RESET_SWRESET				BIT(0)	/* Software Reset */
+
+/* Configuration Register #0 */
+#define OA_TC6_REG_CONFIG0			0x0004
+#define CONFIG0_SYNC				BIT(15)
+#define CONFIG0_ZARFE_ENABLE			BIT(12)
+
+/* Status Register #0 */
+#define OA_TC6_REG_STATUS0			0x0008
+#define STATUS0_RESETC				BIT(6)	/* Reset Complete */
+#define STATUS0_HEADER_ERROR			BIT(5)
+#define STATUS0_LOSS_OF_FRAME_ERROR		BIT(4)
+#define STATUS0_RX_BUFFER_OVERFLOW_ERROR	BIT(3)
+#define STATUS0_TX_PROTOCOL_ERROR		BIT(0)
+
+/* Buffer Status Register */
+#define OA_TC6_REG_BUFFER_STATUS		0x000B
+#define BUFFER_STATUS_TX_CREDITS_AVAILABLE	GENMASK(15, 8)
+#define BUFFER_STATUS_RX_CHUNKS_AVAILABLE	GENMASK(7, 0)
+
+/* Interrupt Mask Register #0 */
+#define OA_TC6_REG_INT_MASK0			0x000C
+#define INT_MASK0_HEADER_ERR_MASK		BIT(5)
+#define INT_MASK0_LOSS_OF_FRAME_ERR_MASK	BIT(4)
+#define INT_MASK0_RX_BUFFER_OVERFLOW_ERR_MASK	BIT(3)
+#define INT_MASK0_TX_PROTOCOL_ERR_MASK		BIT(0)
+
+/* PHY Clause 22 registers base address and mask */
+#define OA_TC6_PHY_STD_REG_ADDR_BASE		0xFF00
+#define OA_TC6_PHY_STD_REG_ADDR_MASK		0x1F
+
+/* Control command header */
+#define OA_TC6_CTRL_HEADER_DATA_NOT_CTRL	BIT(31)
+#define OA_TC6_CTRL_HEADER_WRITE_NOT_READ	BIT(29)
+#define OA_TC6_CTRL_HEADER_MEM_MAP_SELECTOR	GENMASK(27, 24)
+#define OA_TC6_CTRL_HEADER_ADDR			GENMASK(23, 8)
+#define OA_TC6_CTRL_HEADER_LENGTH		GENMASK(7, 1)
+#define OA_TC6_CTRL_HEADER_PARITY		BIT(0)
+
+/* Data header */
+#define OA_TC6_DATA_HEADER_DATA_NOT_CTRL	BIT(31)
+#define OA_TC6_DATA_HEADER_DATA_VALID		BIT(21)
+#define OA_TC6_DATA_HEADER_START_VALID		BIT(20)
+#define OA_TC6_DATA_HEADER_START_WORD_OFFSET	GENMASK(19, 16)
+#define OA_TC6_DATA_HEADER_END_VALID		BIT(14)
+#define OA_TC6_DATA_HEADER_END_BYTE_OFFSET	GENMASK(13, 8)
+#define OA_TC6_DATA_HEADER_PARITY		BIT(0)
+
+/* Data footer */
+#define OA_TC6_DATA_FOOTER_EXTENDED_STS		BIT(31)
+#define OA_TC6_DATA_FOOTER_RXD_HEADER_BAD	BIT(30)
+#define OA_TC6_DATA_FOOTER_CONFIG_SYNC		BIT(29)
+#define OA_TC6_DATA_FOOTER_RX_CHUNKS		GENMASK(28, 24)
+#define OA_TC6_DATA_FOOTER_DATA_VALID		BIT(21)
+#define OA_TC6_DATA_FOOTER_START_VALID		BIT(20)
+#define OA_TC6_DATA_FOOTER_START_WORD_OFFSET	GENMASK(19, 16)
+#define OA_TC6_DATA_FOOTER_END_VALID		BIT(14)
+#define OA_TC6_DATA_FOOTER_END_BYTE_OFFSET	GENMASK(13, 8)
+#define OA_TC6_DATA_FOOTER_TX_CREDITS		GENMASK(5, 1)
+
+/* PHY – Clause 45 registers memory map selector (MMS) as per table 6 in the
+ * OPEN Alliance specification.
+ */
+#define OA_TC6_PHY_C45_PCS_MMS2			2	/* MMD 3 */
+#define OA_TC6_PHY_C45_PMA_PMD_MMS3		3	/* MMD 1 */
+#define OA_TC6_PHY_C45_VS_PLCA_MMS4		4	/* MMD 31 */
+#define OA_TC6_PHY_C45_AUTO_NEG_MMS5		5	/* MMD 7 */
+#define OA_TC6_PHY_C45_POWER_UNIT_MMS6		6	/* MMD 13 */
+
+#define OA_TC6_CTRL_HEADER_SIZE			4
+#define OA_TC6_CTRL_REG_VALUE_SIZE		4
+#define OA_TC6_CTRL_IGNORED_SIZE		4
+#define OA_TC6_CTRL_MAX_REGISTERS		128
+#define OA_TC6_CTRL_SPI_BUF_SIZE		(OA_TC6_CTRL_HEADER_SIZE +\
+						(OA_TC6_CTRL_MAX_REGISTERS *\
+						OA_TC6_CTRL_REG_VALUE_SIZE) +\
+						OA_TC6_CTRL_IGNORED_SIZE)
+#define OA_TC6_CHUNK_PAYLOAD_SIZE		64
+#define OA_TC6_DATA_HEADER_SIZE			4
+#define OA_TC6_CHUNK_SIZE			(OA_TC6_DATA_HEADER_SIZE +\
+						OA_TC6_CHUNK_PAYLOAD_SIZE)
+#define OA_TC6_MAX_TX_CHUNKS			48
+#define OA_TC6_SPI_DATA_BUF_SIZE		(OA_TC6_MAX_TX_CHUNKS *\
+						OA_TC6_CHUNK_SIZE)
+#define STATUS0_RESETC_POLL_DELAY		1000
+#define STATUS0_RESETC_POLL_TIMEOUT		1000000
+
+/* Internal structure for MAC-PHY drivers */
+struct oa_tc6 {
+	struct device *dev;
+	struct net_device *netdev;
+	struct phy_device *phydev;
+	struct mii_bus *mdiobus;
+	struct spi_device *spi;
+	struct mutex spi_ctrl_lock; /* Protects spi control transfer */
+	spinlock_t tx_skb_lock; /* Protects tx skb handling */
+	void *spi_ctrl_tx_buf;
+	void *spi_ctrl_rx_buf;
+	void *spi_data_tx_buf;
+	void *spi_data_rx_buf;
+	struct sk_buff *ongoing_tx_skb;
+	struct sk_buff *waiting_tx_skb;
+	struct sk_buff *rx_skb;
+	struct task_struct *spi_thread;
+	wait_queue_head_t spi_wq;
+	u16 tx_skb_offset;
+	u16 spi_data_tx_buf_offset;
+	u16 tx_credits;
+	u8 rx_chunks_available;
+	bool rx_buf_overflow;
+	bool int_flag;
+};
+
+enum oa_tc6_header_type {
+	OA_TC6_CTRL_HEADER,
+	OA_TC6_DATA_HEADER,
+};
+
+enum oa_tc6_register_op {
+	OA_TC6_CTRL_REG_READ = 0,
+	OA_TC6_CTRL_REG_WRITE = 1,
+};
+
+enum oa_tc6_data_valid_info {
+	OA_TC6_DATA_INVALID,
+	OA_TC6_DATA_VALID,
+};
+
+enum oa_tc6_data_start_valid_info {
+	OA_TC6_DATA_START_INVALID,
+	OA_TC6_DATA_START_VALID,
+};
+
+enum oa_tc6_data_end_valid_info {
+	OA_TC6_DATA_END_INVALID,
+	OA_TC6_DATA_END_VALID,
+};
+#endif /* OA_TC6_STD_DEF_H */
+
-- 
2.43.0
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