driver: net: fsl-mc: Add APIs for DPMAC objects in FLIB

DPMAC object of Management complex controls Physical MAC and MDIO controller.
It provides APIs for MDIO and link state updates. It also provides APIs for
PHY/link configuration.

Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>

3 files changed, 692 insertions, 1 deletions

diff --git a/drivers/net/fsl-mc/Makefile b/drivers/net/fsl-mc/Makefile
index 7563a5f..a492388 100644
--- a/drivers/net/fsl-mc/Makefile
+++ b/drivers/net/fsl-mc/Makefile
@@ -10,5 +10,6 @@ obj-y += mc.o \
 	dpmng.o	\
 	dprc.o	\
 	dpbp.o	\
-	dpni.o
+	dpni.o	\
+	dpmac.o
 obj-y += dpio/
diff --git a/drivers/net/fsl-mc/dpmac.c b/drivers/net/fsl-mc/dpmac.c
new file mode 100644
index 0000000..072a90d
--- /dev/null
+++ b/drivers/net/fsl-mc/dpmac.c
@@ -0,0 +1,222 @@
+/*
+ * Freescale Layerscape MC I/O wrapper
+ *
+ * Copyright (C) 2015 Freescale Semiconductor, Inc.
+ * Author: Prabhakar Kushwaha <prabhakar@freescale.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <fsl-mc/fsl_mc_sys.h>
+#include <fsl-mc/fsl_mc_cmd.h>
+#include <fsl-mc/fsl_dpmac.h>
+
+int dpmac_open(struct fsl_mc_io *mc_io,
+	       uint32_t cmd_flags,
+	       int dpmac_id,
+	       uint16_t *token)
+{
+	struct mc_command cmd = { 0 };
+	int err;
+
+	/* prepare command */
+	cmd.header = mc_encode_cmd_header(DPMAC_CMDID_OPEN,
+					  cmd_flags,
+					  0);
+	DPMAC_CMD_OPEN(cmd, dpmac_id);
+
+	/* send command to mc*/
+	err = mc_send_command(mc_io, &cmd);
+	if (err)
+		return err;
+
+	/* retrieve response parameters */
+	*token = MC_CMD_HDR_READ_TOKEN(cmd.header);
+
+	return err;
+}
+
+int dpmac_close(struct fsl_mc_io *mc_io,
+		uint32_t cmd_flags,
+		uint16_t token)
+{
+	struct mc_command cmd = { 0 };
+
+	/* prepare command */
+	cmd.header = mc_encode_cmd_header(DPMAC_CMDID_CLOSE, cmd_flags,
+					  token);
+
+	/* send command to mc*/
+	return mc_send_command(mc_io, &cmd);
+}
+
+int dpmac_create(struct fsl_mc_io *mc_io,
+		 uint32_t cmd_flags,
+		 const struct dpmac_cfg *cfg,
+		 uint16_t *token)
+{
+	struct mc_command cmd = { 0 };
+	int err;
+
+	/* prepare command */
+	cmd.header = mc_encode_cmd_header(DPMAC_CMDID_CREATE,
+					  cmd_flags,
+					  0);
+	DPMAC_CMD_CREATE(cmd, cfg);
+
+	/* send command to mc*/
+	err = mc_send_command(mc_io, &cmd);
+	if (err)
+		return err;
+
+	/* retrieve response parameters */
+	*token = MC_CMD_HDR_READ_TOKEN(cmd.header);
+
+	return 0;
+}
+
+int dpmac_destroy(struct fsl_mc_io *mc_io,
+		  uint32_t cmd_flags,
+		  uint16_t token)
+{
+	struct mc_command cmd = { 0 };
+
+	/* prepare command */
+	cmd.header = mc_encode_cmd_header(DPMAC_CMDID_DESTROY,
+					  cmd_flags,
+					  token);
+
+	/* send command to mc*/
+	return mc_send_command(mc_io, &cmd);
+}
+
+int dpmac_get_attributes(struct fsl_mc_io *mc_io,
+			 uint32_t cmd_flags,
+			 uint16_t token,
+			 struct dpmac_attr *attr)
+{
+	struct mc_command cmd = { 0 };
+	int err;
+
+	/* prepare command */
+	cmd.header = mc_encode_cmd_header(DPMAC_CMDID_GET_ATTR,
+					  cmd_flags,
+					  token);
+
+	/* send command to mc*/
+	err = mc_send_command(mc_io, &cmd);
+	if (err)
+		return err;
+
+	/* retrieve response parameters */
+	DPMAC_RSP_GET_ATTRIBUTES(cmd, attr);
+
+	return 0;
+}
+
+int dpmac_mdio_read(struct fsl_mc_io *mc_io,
+		    uint32_t cmd_flags,
+		    uint16_t token,
+		    struct dpmac_mdio_cfg *cfg)
+{
+	struct mc_command cmd = { 0 };
+	int err;
+
+	/* prepare command */
+	cmd.header = mc_encode_cmd_header(DPMAC_CMDID_MDIO_READ,
+					  cmd_flags,
+					  token);
+	DPMAC_CMD_MDIO_READ(cmd, cfg);
+
+	/* send command to mc*/
+	err = mc_send_command(mc_io, &cmd);
+	if (err)
+		return err;
+
+	/* retrieve response parameters */
+	DPMAC_RSP_MDIO_READ(cmd, cfg->data);
+
+	return 0;
+}
+
+int dpmac_mdio_write(struct fsl_mc_io *mc_io,
+		     uint32_t cmd_flags,
+		     uint16_t token,
+		     struct dpmac_mdio_cfg *cfg)
+{
+	struct mc_command cmd = { 0 };
+
+	/* prepare command */
+	cmd.header = mc_encode_cmd_header(DPMAC_CMDID_MDIO_WRITE,
+					  cmd_flags,
+					  token);
+	DPMAC_CMD_MDIO_WRITE(cmd, cfg);
+
+	/* send command to mc*/
+	return mc_send_command(mc_io, &cmd);
+}
+
+int dpmac_get_link_cfg(struct fsl_mc_io *mc_io,
+		       uint32_t cmd_flags,
+		       uint16_t token,
+		       struct dpmac_link_cfg *cfg)
+{
+	struct mc_command cmd = { 0 };
+	int err = 0;
+
+	/* prepare command */
+	cmd.header = mc_encode_cmd_header(DPMAC_CMDID_GET_LINK_CFG,
+					  cmd_flags,
+					  token);
+
+	/* send command to mc*/
+	err = mc_send_command(mc_io, &cmd);
+	if (err)
+		return err;
+
+	DPMAC_RSP_GET_LINK_CFG(cmd, cfg);
+
+	return 0;
+}
+
+int dpmac_set_link_state(struct fsl_mc_io *mc_io,
+			 uint32_t cmd_flags,
+			 uint16_t token,
+			 struct dpmac_link_state *link_state)
+{
+	struct mc_command cmd = { 0 };
+
+	/* prepare command */
+	cmd.header = mc_encode_cmd_header(DPMAC_CMDID_SET_LINK_STATE,
+					  cmd_flags,
+					  token);
+	DPMAC_CMD_SET_LINK_STATE(cmd, link_state);
+
+	/* send command to mc*/
+	return mc_send_command(mc_io, &cmd);
+}
+
+int dpmac_get_counter(struct fsl_mc_io *mc_io,
+		      uint32_t cmd_flags,
+		      uint16_t token,
+		      enum dpmac_counter type,
+		      uint64_t *counter)
+{
+	struct mc_command cmd = { 0 };
+	int err = 0;
+
+	/* prepare command */
+	cmd.header = mc_encode_cmd_header(DPMAC_CMDID_GET_COUNTER,
+					  cmd_flags,
+					  token);
+	DPMAC_CMD_GET_COUNTER(cmd, type);
+
+	/* send command to mc*/
+	err = mc_send_command(mc_io, &cmd);
+	if (err)
+		return err;
+
+	DPMAC_RSP_GET_COUNTER(cmd, *counter);
+
+	return 0;
+}
diff --git a/include/fsl-mc/fsl_dpmac.h b/include/fsl-mc/fsl_dpmac.h
new file mode 100644
index 0000000..24f0b48
--- /dev/null
+++ b/include/fsl-mc/fsl_dpmac.h
@@ -0,0 +1,468 @@
+/*
+ * Freescale Layerscape MC I/O wrapper
+ *
+ * Copyright (C) 2015 Freescale Semiconductor, Inc.
+ * Author: Prabhakar Kushwaha <prabhakar@freescale.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef __FSL_DPMAC_H
+#define __FSL_DPMAC_H
+
+/* DPMAC Version */
+#define DPMAC_VER_MAJOR				3
+#define DPMAC_VER_MINOR				1
+
+/* Command IDs */
+#define DPMAC_CMDID_CLOSE			0x800
+#define DPMAC_CMDID_OPEN			0x80c
+#define DPMAC_CMDID_CREATE			0x90c
+#define DPMAC_CMDID_DESTROY			0x900
+
+#define DPMAC_CMDID_GET_ATTR			0x004
+#define DPMAC_CMDID_RESET			0x005
+
+#define DPMAC_CMDID_MDIO_READ			0x0c0
+#define DPMAC_CMDID_MDIO_WRITE			0x0c1
+#define DPMAC_CMDID_GET_LINK_CFG		0x0c2
+#define DPMAC_CMDID_SET_LINK_STATE		0x0c3
+#define DPMAC_CMDID_GET_COUNTER			0x0c4
+
+/*                cmd, param, offset, width, type, arg_name */
+#define DPMAC_CMD_CREATE(cmd, cfg) \
+	MC_CMD_OP(cmd, 0, 0,  32, int,      cfg->mac_id)
+
+/*                cmd, param, offset, width, type, arg_name */
+#define DPMAC_CMD_OPEN(cmd, dpmac_id) \
+	MC_CMD_OP(cmd, 0, 0,  32, int,	    dpmac_id)
+
+/*                cmd, param, offset, width, type,	arg_name */
+#define DPMAC_RSP_GET_ATTRIBUTES(cmd, attr) \
+do { \
+	MC_RSP_OP(cmd, 0, 0,  32, int,			attr->phy_id);\
+	MC_RSP_OP(cmd, 0, 32, 32, int,			attr->id);\
+	MC_RSP_OP(cmd, 1, 0,  16, uint16_t,		attr->version.major);\
+	MC_RSP_OP(cmd, 1, 16, 16, uint16_t,		attr->version.minor);\
+	MC_RSP_OP(cmd, 1, 32,  8, enum dpmac_link_type,	attr->link_type);\
+	MC_RSP_OP(cmd, 1, 40,  8, enum dpmac_eth_if,	attr->eth_if);\
+	MC_RSP_OP(cmd, 2, 0,  32, uint32_t,		attr->max_rate);\
+} while (0)
+
+/*                cmd, param, offset, width, type, arg_name */
+#define DPMAC_CMD_MDIO_READ(cmd, cfg) \
+do { \
+	MC_CMD_OP(cmd, 0, 0,  8,  uint8_t,  cfg->phy_addr); \
+	MC_CMD_OP(cmd, 0, 8,  8,  uint8_t,  cfg->reg); \
+} while (0)
+
+/*                cmd, param, offset, width, type, arg_name */
+#define DPMAC_RSP_MDIO_READ(cmd, data) \
+	MC_RSP_OP(cmd, 0, 16, 16, uint16_t, data)
+
+/*                cmd, param, offset, width, type, arg_name */
+#define DPMAC_CMD_MDIO_WRITE(cmd, cfg) \
+do { \
+	MC_CMD_OP(cmd, 0, 0,  8,  uint8_t,  cfg->phy_addr); \
+	MC_CMD_OP(cmd, 0, 8,  8,  uint8_t,  cfg->reg); \
+	MC_CMD_OP(cmd, 0, 16, 16, uint16_t, cfg->data); \
+} while (0)
+
+/*                cmd, param, offset, width, type, arg_name */
+#define DPMAC_RSP_GET_LINK_CFG(cmd, cfg) \
+do { \
+	MC_RSP_OP(cmd, 0, 0,  64, uint64_t, cfg->options); \
+	MC_RSP_OP(cmd, 1, 0,  32, uint32_t, cfg->rate); \
+} while (0)
+
+/*                cmd, param, offset, width, type, arg_name */
+#define DPMAC_CMD_SET_LINK_STATE(cmd, cfg) \
+do { \
+	MC_CMD_OP(cmd, 0, 0,  64, uint64_t, cfg->options); \
+	MC_CMD_OP(cmd, 1, 0,  32, uint32_t, cfg->rate); \
+	MC_CMD_OP(cmd, 2, 0,  1,  int,      cfg->up); \
+} while (0)
+
+/*                cmd, param, offset, width, type, arg_name */
+#define DPMAC_CMD_GET_COUNTER(cmd, type) \
+	MC_CMD_OP(cmd, 0, 0,  8, enum dpmac_counter, type)
+
+/*                cmd, param, offset, width, type, arg_name */
+#define DPMAC_RSP_GET_COUNTER(cmd, counter) \
+	MC_RSP_OP(cmd, 1, 0, 64, uint64_t, counter)
+
+/* Data Path MAC API
+ * Contains initialization APIs and runtime control APIs for DPMAC
+ */
+
+struct fsl_mc_io;
+
+/**
+ * dpmac_open() - Open a control session for the specified object.
+ * @mc_io:	Pointer to MC portal's I/O object
+ * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
+ * @dpmac_id:	DPMAC unique ID
+ * @token:	Returned token; use in subsequent API calls
+ *
+ * This function can be used to open a control session for an
+ * already created object; an object may have been declared in
+ * the DPL or by calling the dpmac_create function.
+ * This function returns a unique authentication token,
+ * associated with the specific object ID and the specific MC
+ * portal; this token must be used in all subsequent commands for
+ * this specific object
+ *
+ * Return:	'0' on Success; Error code otherwise.
+ */
+int dpmac_open(struct fsl_mc_io	*mc_io,
+	       uint32_t		cmd_flags,
+	       int			dpmac_id,
+	       uint16_t		*token);
+
+/**
+ * dpmac_close() - Close the control session of the object
+ * @mc_io:	Pointer to MC portal's I/O object
+ * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token:	Token of DPMAC object
+ *
+ * After this function is called, no further operations are
+ * allowed on the object without opening a new control session.
+ *
+ * Return:	'0' on Success; Error code otherwise.
+ */
+int dpmac_close(struct fsl_mc_io	*mc_io,
+		uint32_t		cmd_flags,
+		uint16_t		token);
+
+/**
+ * enum dpmac_link_type -  DPMAC link type
+ * @DPMAC_LINK_TYPE_NONE: No link
+ * @DPMAC_LINK_TYPE_FIXED: Link is fixed type
+ * @DPMAC_LINK_TYPE_PHY: Link by PHY ID
+ * @DPMAC_LINK_TYPE_BACKPLANE: Backplane link type
+ */
+enum dpmac_link_type {
+	DPMAC_LINK_TYPE_NONE,
+	DPMAC_LINK_TYPE_FIXED,
+	DPMAC_LINK_TYPE_PHY,
+	DPMAC_LINK_TYPE_BACKPLANE
+};
+
+/**
+ * enum dpmac_eth_if - DPMAC Ethrnet interface
+ * @DPMAC_ETH_IF_MII: MII interface
+ * @DPMAC_ETH_IF_RMII: RMII interface
+ * @DPMAC_ETH_IF_SMII: SMII interface
+ * @DPMAC_ETH_IF_GMII: GMII interface
+ * @DPMAC_ETH_IF_RGMII: RGMII interface
+ * @DPMAC_ETH_IF_SGMII: SGMII interface
+ * @DPMAC_ETH_IF_QSGMII: QSGMII interface
+ * @DPMAC_ETH_IF_XAUI: XAUI interface
+ * @DPMAC_ETH_IF_XFI: XFI interface
+ */
+enum dpmac_eth_if {
+	DPMAC_ETH_IF_MII,
+	DPMAC_ETH_IF_RMII,
+	DPMAC_ETH_IF_SMII,
+	DPMAC_ETH_IF_GMII,
+	DPMAC_ETH_IF_RGMII,
+	DPMAC_ETH_IF_SGMII,
+	DPMAC_ETH_IF_QSGMII,
+	DPMAC_ETH_IF_XAUI,
+	DPMAC_ETH_IF_XFI
+};
+
+/**
+ * struct dpmac_cfg - Structure representing DPMAC configuration
+ * @mac_id:	Represents the Hardware MAC ID; in case of multiple WRIOP,
+ *		the MAC IDs are continuous.
+ *		For example:  2 WRIOPs, 16 MACs in each:
+ *				MAC IDs for the 1st WRIOP: 1-16,
+ *				MAC IDs for the 2nd WRIOP: 17-32.
+ */
+struct dpmac_cfg {
+	int mac_id;
+};
+
+/**
+ * dpmac_create() - Create the DPMAC object.
+ * @mc_io:	Pointer to MC portal's I/O object
+ * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
+ * @cfg:	Configuration structure
+ * @token:	Returned token; use in subsequent API calls
+ *
+ * Create the DPMAC object, allocate required resources and
+ * perform required initialization.
+ *
+ * The object can be created either by declaring it in the
+ * DPL file, or by calling this function.
+ * This function returns a unique authentication token,
+ * associated with the specific object ID and the specific MC
+ * portal; this token must be used in all subsequent calls to
+ * this specific object. For objects that are created using the
+ * DPL file, call dpmac_open function to get an authentication
+ * token first.
+ *
+ * Return:	'0' on Success; Error code otherwise.
+ */
+int dpmac_create(struct fsl_mc_io	*mc_io,
+		 uint32_t		cmd_flags,
+		 const struct dpmac_cfg	*cfg,
+		 uint16_t		*token);
+
+/**
+ * dpmac_destroy() - Destroy the DPMAC object and release all its resources.
+ * @mc_io:	Pointer to MC portal's I/O object
+ * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token:	Token of DPMAC object
+ *
+ * Return:	'0' on Success; error code otherwise.
+ */
+int dpmac_destroy(struct fsl_mc_io	*mc_io,
+		  uint32_t		cmd_flags,
+		  uint16_t		token);
+
+/* DPMAC IRQ Index and Events */
+
+/* IRQ index */
+#define DPMAC_IRQ_INDEX						0
+/* IRQ event - indicates a change in link state */
+#define DPMAC_IRQ_EVENT_LINK_CFG_REQ		0x00000001
+/* irq event - Indicates that the link state changed */
+#define DPMAC_IRQ_EVENT_LINK_CHANGED		0x00000002
+
+/**
+ * struct dpmac_attr - Structure representing DPMAC attributes
+ * @id:		DPMAC object ID
+ * @phy_id:	PHY ID
+ * @link_type: link type
+ * @eth_if: Ethernet interface
+ * @max_rate: Maximum supported rate - in Mbps
+ * @version:	DPMAC version
+ */
+struct dpmac_attr {
+	int			id;
+	int			phy_id;
+	enum dpmac_link_type	link_type;
+	enum dpmac_eth_if	eth_if;
+	uint32_t		max_rate;
+	/**
+	 * struct version - Structure representing DPMAC version
+	 * @major:	DPMAC major version
+	 * @minor:	DPMAC minor version
+	 */
+	struct {
+		uint16_t major;
+		uint16_t minor;
+	} version;
+};
+
+/**
+ * dpmac_get_attributes - Retrieve DPMAC attributes.
+ *
+ * @mc_io:	Pointer to MC portal's I/O object
+ * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token:	Token of DPMAC object
+ * @attr:	Returned object's attributes
+ *
+ * Return:	'0' on Success; Error code otherwise.
+ */
+int dpmac_get_attributes(struct fsl_mc_io	*mc_io,
+			 uint32_t		cmd_flags,
+			 uint16_t		token,
+			 struct dpmac_attr	*attr);
+
+/**
+ * struct dpmac_mdio_cfg - DPMAC MDIO read/write parameters
+ * @phy_addr: MDIO device address
+ * @reg: Address of the register within the Clause 45 PHY device from which data
+ *	is to be read
+ * @data: Data read/write from/to MDIO
+ */
+struct dpmac_mdio_cfg {
+	uint8_t		phy_addr;
+	uint8_t		reg;
+	uint16_t	data;
+};
+
+/**
+ * dpmac_mdio_read() - Perform MDIO read transaction
+ * @mc_io:	Pointer to opaque I/O object
+ * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token:	Token of DPMAC object
+ * @cfg:	Structure with MDIO transaction parameters
+ *
+ * Return:	'0' on Success; Error code otherwise.
+ */
+int dpmac_mdio_read(struct fsl_mc_io		*mc_io,
+		    uint32_t			cmd_flags,
+		    uint16_t			token,
+		    struct dpmac_mdio_cfg	*cfg);
+
+/**
+ * dpmac_mdio_write() - Perform MDIO write transaction
+ * @mc_io:	Pointer to opaque I/O object
+ * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token:	Token of DPMAC object
+ * @cfg:	Structure with MDIO transaction parameters
+ *
+ * Return:	'0' on Success; Error code otherwise.
+ */
+int dpmac_mdio_write(struct fsl_mc_io		*mc_io,
+		     uint32_t			cmd_flags,
+		     uint16_t			token,
+		     struct dpmac_mdio_cfg	*cfg);
+
+/* DPMAC link configuration/state options */
+
+/* Enable auto-negotiation */
+#define DPMAC_LINK_OPT_AUTONEG		0x0000000000000001ULL
+/* Enable half-duplex mode */
+#define DPMAC_LINK_OPT_HALF_DUPLEX	0x0000000000000002ULL
+/* Enable pause frames */
+#define DPMAC_LINK_OPT_PAUSE		0x0000000000000004ULL
+/* Enable a-symmetric pause frames */
+#define DPMAC_LINK_OPT_ASYM_PAUSE	0x0000000000000008ULL
+
+/**
+ * struct dpmac_link_cfg - Structure representing DPMAC link configuration
+ * @rate: Link's rate - in Mbps
+ * @options: Enable/Disable DPMAC link cfg features (bitmap)
+ */
+struct dpmac_link_cfg {
+	uint32_t rate;
+	uint64_t options;
+};
+
+/**
+ * dpmac_get_link_cfg() - Get Ethernet link configuration
+ * @mc_io:	Pointer to opaque I/O object
+ * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token:	Token of DPMAC object
+ * @cfg:	Returned structure with the link configuration
+ *
+ * Return:	'0' on Success; Error code otherwise.
+ */
+int dpmac_get_link_cfg(struct fsl_mc_io	*mc_io,
+		       uint32_t		cmd_flags,
+		       uint16_t		token,
+		       struct dpmac_link_cfg	*cfg);
+
+/**
+ * struct dpmac_link_state - DPMAC link configuration request
+ * @rate: Rate in Mbps
+ * @options: Enable/Disable DPMAC link cfg features (bitmap)
+ * @up: Link state
+ */
+struct dpmac_link_state {
+	uint32_t	rate;
+	uint64_t	options;
+	int		up;
+};
+
+/**
+ * dpmac_set_link_state() - Set the Ethernet link status
+ * @mc_io:	Pointer to opaque I/O object
+ * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token:	Token of DPMAC object
+ * @link_state:	Link state configuration
+ *
+ * Return:	'0' on Success; Error code otherwise.
+ */
+int dpmac_set_link_state(struct fsl_mc_io		*mc_io,
+			 uint32_t			cmd_flags,
+			 uint16_t			token,
+			 struct dpmac_link_state	*link_state);
+
+/**
+ * enum dpni_counter - DPNI counter types
+ * @DPMAC_CNT_ING_FRAME_64: counts 64-octet frame, good or bad.
+ * @DPMAC_CNT_ING_FRAME_127: counts 65- to 127-octet frame, good or bad.
+ * @DPMAC_CNT_ING_FRAME_255: counts 128- to 255-octet frame, good or bad.
+ * @DPMAC_CNT_ING_FRAME_511: counts 256- to 511-octet frame, good or bad.
+ * @DPMAC_CNT_ING_FRAME_1023: counts 512- to 1023-octet frame, good or bad.
+ * @DPMAC_CNT_ING_FRAME_1518: counts 1024- to 1518-octet frame, good or bad.
+ * @DPMAC_CNT_ING_FRAME_1519_MAX: counts 1519-octet frame and larger
+ *				  (up to max frame length specified),
+ *				  good or bad.
+ * @DPMAC_CNT_ING_FRAG: counts packet which is shorter than 64 octets received
+ *			with a wrong CRC
+ * @DPMAC_CNT_ING_JABBER: counts packet longer than the maximum frame length
+ *			  specified, with a bad frame check sequence.
+ * @DPMAC_CNT_ING_FRAME_DISCARD: counts dropped packet due to internal errors.
+ *				 Occurs when a receive FIFO overflows.
+ *				 Includes also packets truncated as a result of
+ *				 the receive FIFO overflow.
+ * @DPMAC_CNT_ING_ALIGN_ERR: counts frame with an alignment error
+ *			     (optional used for wrong SFD)
+ * @DPMAC_CNT_EGR_UNDERSIZED: counts packet transmitted that was less than 64
+ *			      octets long with a good CRC.
+ * @DPMAC_CNT_ING_OVERSIZED: counts packet longer than the maximum frame length
+ *			     specified, with a good frame check sequence.
+ * @DPMAC_CNT_ING_VALID_PAUSE_FRAME: counts valid pause frame (regular and PFC).
+ * @DPMAC_CNT_EGR_VALID_PAUSE_FRAME: counts valid pause frame transmitted
+ *				     (regular and PFC).
+ * @DPMAC_CNT_ING_BYTE: counts octet received except preamble for all valid
+ *				frames and valid pause frames.
+ * @DPMAC_CNT_ING_MCAST_FRAME: counts received multicast frame
+ * @DPMAC_CNT_ING_BCAST_FRAME: counts received broadcast frame
+ * @DPMAC_CNT_ING_ALL_FRAME: counts each good or bad packet received.
+ * @DPMAC_CNT_ING_UCAST_FRAME: counts received unicast frame
+ * @DPMAC_CNT_ING_ERR_FRAME: counts frame received with an error
+ *			     (except for undersized/fragment frame)
+ * @DPMAC_CNT_EGR_BYTE: counts octet transmitted except preamble for all valid
+ *			frames and valid pause frames transmitted.
+ * @DPMAC_CNT_EGR_MCAST_FRAME: counts transmitted multicast frame
+ * @DPMAC_CNT_EGR_BCAST_FRAME: counts transmitted broadcast frame
+ * @DPMAC_CNT_EGR_UCAST_FRAME: counts transmitted unicast frame
+ * @DPMAC_CNT_EGR_ERR_FRAME: counts frame transmitted with an error
+ * @DPMAC_CNT_ING_GOOD_FRAME: counts frame received without error, including
+ *			      pause frames.
+ */
+enum dpmac_counter {
+	DPMAC_CNT_ING_FRAME_64,
+	DPMAC_CNT_ING_FRAME_127,
+	DPMAC_CNT_ING_FRAME_255,
+	DPMAC_CNT_ING_FRAME_511,
+	DPMAC_CNT_ING_FRAME_1023,
+	DPMAC_CNT_ING_FRAME_1518,
+	DPMAC_CNT_ING_FRAME_1519_MAX,
+	DPMAC_CNT_ING_FRAG,
+	DPMAC_CNT_ING_JABBER,
+	DPMAC_CNT_ING_FRAME_DISCARD,
+	DPMAC_CNT_ING_ALIGN_ERR,
+	DPMAC_CNT_EGR_UNDERSIZED,
+	DPMAC_CNT_ING_OVERSIZED,
+	DPMAC_CNT_ING_VALID_PAUSE_FRAME,
+	DPMAC_CNT_EGR_VALID_PAUSE_FRAME,
+	DPMAC_CNT_ING_BYTE,
+	DPMAC_CNT_ING_MCAST_FRAME,
+	DPMAC_CNT_ING_BCAST_FRAME,
+	DPMAC_CNT_ING_ALL_FRAME,
+	DPMAC_CNT_ING_UCAST_FRAME,
+	DPMAC_CNT_ING_ERR_FRAME,
+	DPMAC_CNT_EGR_BYTE,
+	DPMAC_CNT_EGR_MCAST_FRAME,
+	DPMAC_CNT_EGR_BCAST_FRAME,
+	DPMAC_CNT_EGR_UCAST_FRAME,
+	DPMAC_CNT_EGR_ERR_FRAME,
+	DPMAC_CNT_ING_GOOD_FRAME
+};
+
+/**
+ * dpmac_get_counter() - Read a specific DPMAC counter
+ * @mc_io:	Pointer to opaque I/O object
+ * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token:	Token of DPMAC object
+ * @type:	The requested counter
+ * @counter:	Returned counter value
+ *
+ * Return:	The requested counter; '0' otherwise.
+ */
+int dpmac_get_counter(struct fsl_mc_io		*mc_io,
+		      uint32_t			cmd_flags,
+		      uint16_t			token,
+		      enum dpmac_counter	 type,
+		      uint64_t			*counter);
+
+#endif /* __FSL_DPMAC_H */