1 files changed, 293 insertions, 0 deletions
diff --git a/drivers/net/ethernet/freescale/dpaa2/dprtc.c b/drivers/net/ethernet/freescale/dpaa2/dprtc.c
new file mode 100644
index 000000000..ed52a34fa
--- /dev/null
+++ b/drivers/net/ethernet/freescale/dpaa2/dprtc.c
@@ -0,0 +1,293 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright 2013-2016 Freescale Semiconductor Inc.
+ * Copyright 2016-2018 NXP
+ */
+
+#include <linux/fsl/mc.h>
+
+#include "dprtc.h"
+#include "dprtc-cmd.h"
+
+/**
+ * dprtc_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_'
+ * @dprtc_id:	DPRTC 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 dprtc_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 dprtc_open(struct fsl_mc_io *mc_io,
+	       u32 cmd_flags,
+	       int dprtc_id,
+	       u16 *token)
+{
+	struct dprtc_cmd_open *cmd_params;
+	struct fsl_mc_command cmd = { 0 };
+	int err;
+
+	cmd.header = mc_encode_cmd_header(DPRTC_CMDID_OPEN,
+					  cmd_flags,
+					  0);
+	cmd_params = (struct dprtc_cmd_open *)cmd.params;
+	cmd_params->dprtc_id = cpu_to_le32(dprtc_id);
+
+	err = mc_send_command(mc_io, &cmd);
+	if (err)
+		return err;
+
+	*token = mc_cmd_hdr_read_token(&cmd);
+
+	return 0;
+}
+
+/**
+ * dprtc_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 DPRTC 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 dprtc_close(struct fsl_mc_io *mc_io,
+		u32 cmd_flags,
+		u16 token)
+{
+	struct fsl_mc_command cmd = { 0 };
+
+	cmd.header = mc_encode_cmd_header(DPRTC_CMDID_CLOSE, cmd_flags,
+					  token);
+
+	return mc_send_command(mc_io, &cmd);
+}
+
+/**
+ * dprtc_set_irq_enable() - Set overall interrupt state.
+ * @mc_io:	Pointer to MC portal's I/O object
+ * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token:	Token of DPRTC object
+ * @irq_index:	The interrupt index to configure
+ * @en:		Interrupt state - enable = 1, disable = 0
+ *
+ * Allows GPP software to control when interrupts are generated.
+ * Each interrupt can have up to 32 causes.  The enable/disable control's the
+ * overall interrupt state. if the interrupt is disabled no causes will cause
+ * an interrupt.
+ *
+ * Return:	'0' on Success; Error code otherwise.
+ */
+int dprtc_set_irq_enable(struct fsl_mc_io *mc_io,
+			 u32 cmd_flags,
+			 u16 token,
+			 u8 irq_index,
+			 u8 en)
+{
+	struct dprtc_cmd_set_irq_enable *cmd_params;
+	struct fsl_mc_command cmd = { 0 };
+
+	cmd.header = mc_encode_cmd_header(DPRTC_CMDID_SET_IRQ_ENABLE,
+					  cmd_flags,
+					  token);
+	cmd_params = (struct dprtc_cmd_set_irq_enable *)cmd.params;
+	cmd_params->irq_index = irq_index;
+	cmd_params->en = en;
+
+	return mc_send_command(mc_io, &cmd);
+}
+
+/**
+ * dprtc_get_irq_enable() - Get overall interrupt state
+ * @mc_io:	Pointer to MC portal's I/O object
+ * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token:	Token of DPRTC object
+ * @irq_index:	The interrupt index to configure
+ * @en:		Returned interrupt state - enable = 1, disable = 0
+ *
+ * Return:	'0' on Success; Error code otherwise.
+ */
+int dprtc_get_irq_enable(struct fsl_mc_io *mc_io,
+			 u32 cmd_flags,
+			 u16 token,
+			 u8 irq_index,
+			 u8 *en)
+{
+	struct dprtc_rsp_get_irq_enable *rsp_params;
+	struct dprtc_cmd_get_irq *cmd_params;
+	struct fsl_mc_command cmd = { 0 };
+	int err;
+
+	cmd.header = mc_encode_cmd_header(DPRTC_CMDID_GET_IRQ_ENABLE,
+					  cmd_flags,
+					  token);
+	cmd_params = (struct dprtc_cmd_get_irq *)cmd.params;
+	cmd_params->irq_index = irq_index;
+
+	err = mc_send_command(mc_io, &cmd);
+	if (err)
+		return err;
+
+	rsp_params = (struct dprtc_rsp_get_irq_enable *)cmd.params;
+	*en = rsp_params->en;
+
+	return 0;
+}
+
+/**
+ * dprtc_set_irq_mask() - Set interrupt mask.
+ * @mc_io:	Pointer to MC portal's I/O object
+ * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token:	Token of DPRTC object
+ * @irq_index:	The interrupt index to configure
+ * @mask:	Event mask to trigger interrupt;
+ *		each bit:
+ *			0 = ignore event
+ *			1 = consider event for asserting IRQ
+ *
+ * Every interrupt can have up to 32 causes and the interrupt model supports
+ * masking/unmasking each cause independently
+ *
+ * Return:	'0' on Success; Error code otherwise.
+ */
+int dprtc_set_irq_mask(struct fsl_mc_io *mc_io,
+		       u32 cmd_flags,
+		       u16 token,
+		       u8 irq_index,
+		       u32 mask)
+{
+	struct dprtc_cmd_set_irq_mask *cmd_params;
+	struct fsl_mc_command cmd = { 0 };
+
+	cmd.header = mc_encode_cmd_header(DPRTC_CMDID_SET_IRQ_MASK,
+					  cmd_flags,
+					  token);
+	cmd_params = (struct dprtc_cmd_set_irq_mask *)cmd.params;
+	cmd_params->mask = cpu_to_le32(mask);
+	cmd_params->irq_index = irq_index;
+
+	return mc_send_command(mc_io, &cmd);
+}
+
+/**
+ * dprtc_get_irq_mask() - Get interrupt mask.
+ * @mc_io:	Pointer to MC portal's I/O object
+ * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token:	Token of DPRTC object
+ * @irq_index:	The interrupt index to configure
+ * @mask:	Returned event mask to trigger interrupt
+ *
+ * Every interrupt can have up to 32 causes and the interrupt model supports
+ * masking/unmasking each cause independently
+ *
+ * Return:	'0' on Success; Error code otherwise.
+ */
+int dprtc_get_irq_mask(struct fsl_mc_io *mc_io,
+		       u32 cmd_flags,
+		       u16 token,
+		       u8 irq_index,
+		       u32 *mask)
+{
+	struct dprtc_rsp_get_irq_mask *rsp_params;
+	struct dprtc_cmd_get_irq *cmd_params;
+	struct fsl_mc_command cmd = { 0 };
+	int err;
+
+	cmd.header = mc_encode_cmd_header(DPRTC_CMDID_GET_IRQ_MASK,
+					  cmd_flags,
+					  token);
+	cmd_params = (struct dprtc_cmd_get_irq *)cmd.params;
+	cmd_params->irq_index = irq_index;
+
+	err = mc_send_command(mc_io, &cmd);
+	if (err)
+		return err;
+
+	rsp_params = (struct dprtc_rsp_get_irq_mask *)cmd.params;
+	*mask = le32_to_cpu(rsp_params->mask);
+
+	return 0;
+}
+
+/**
+ * dprtc_get_irq_status() - Get the current status of any pending interrupts.
+ *
+ * @mc_io:	Pointer to MC portal's I/O object
+ * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token:	Token of DPRTC object
+ * @irq_index:	The interrupt index to configure
+ * @status:	Returned interrupts status - one bit per cause:
+ *			0 = no interrupt pending
+ *			1 = interrupt pending
+ *
+ * Return:	'0' on Success; Error code otherwise.
+ */
+int dprtc_get_irq_status(struct fsl_mc_io *mc_io,
+			 u32 cmd_flags,
+			 u16 token,
+			 u8 irq_index,
+			 u32 *status)
+{
+	struct dprtc_cmd_get_irq_status *cmd_params;
+	struct dprtc_rsp_get_irq_status *rsp_params;
+	struct fsl_mc_command cmd = { 0 };
+	int err;
+
+	cmd.header = mc_encode_cmd_header(DPRTC_CMDID_GET_IRQ_STATUS,
+					  cmd_flags,
+					  token);
+	cmd_params = (struct dprtc_cmd_get_irq_status *)cmd.params;
+	cmd_params->status = cpu_to_le32(*status);
+	cmd_params->irq_index = irq_index;
+
+	err = mc_send_command(mc_io, &cmd);
+	if (err)
+		return err;
+
+	rsp_params = (struct dprtc_rsp_get_irq_status *)cmd.params;
+	*status = le32_to_cpu(rsp_params->status);
+
+	return 0;
+}
+
+/**
+ * dprtc_clear_irq_status() - Clear a pending interrupt's status
+ *
+ * @mc_io:	Pointer to MC portal's I/O object
+ * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token:	Token of DPRTC object
+ * @irq_index:	The interrupt index to configure
+ * @status:	Bits to clear (W1C) - one bit per cause:
+ *			0 = don't change
+ *			1 = clear status bit
+ *
+ * Return:	'0' on Success; Error code otherwise.
+ */
+int dprtc_clear_irq_status(struct fsl_mc_io *mc_io,
+			   u32 cmd_flags,
+			   u16 token,
+			   u8 irq_index,
+			   u32 status)
+{
+	struct dprtc_cmd_clear_irq_status *cmd_params;
+	struct fsl_mc_command cmd = { 0 };
+
+	cmd.header = mc_encode_cmd_header(DPRTC_CMDID_CLEAR_IRQ_STATUS,
+					  cmd_flags,
+					  token);
+	cmd_params = (struct dprtc_cmd_clear_irq_status *)cmd.params;
+	cmd_params->irq_index = irq_index;
+	cmd_params->status = cpu_to_le32(status);
+
+	return mc_send_command(mc_io, &cmd);
+}