add dts config

hc

2023-12-06 08f87f769b595151be1afeff53e144f543faa614

 kernel/drivers/bus/fsl-mc/dprc.c
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@@ -1,12 +1,20 @@
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 // SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
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 /*
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  * Copyright 2013-2016 Freescale Semiconductor Inc.
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+ * Copyright 2020 NXP
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  *
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  */
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 #include <linux/kernel.h>
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 #include <linux/fsl/mc.h>
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9
 
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 #include "fsl-mc-private.h"
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+
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+/*
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+ * cache the DPRC version to reduce the number of commands
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+ * towards the mc firmware
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+ */
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+static u16 dprc_major_ver;
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+static u16 dprc_minor_ver;
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 /**
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  * dprc_open() - Open DPRC object for use
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@@ -71,6 +79,77 @@
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 	return mc_send_command(mc_io, &cmd);
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 }
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 EXPORT_SYMBOL_GPL(dprc_close);
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+
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+/**
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+ * dprc_reset_container - Reset child container.
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+ * @mc_io:	Pointer to MC portal's I/O object
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+ * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
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+ * @token:	Token of DPRC object
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+ * @child_container_id:	ID of the container to reset
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+ * @options: 32 bit options:
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+ *   - 0 (no bits set) - all the objects inside the container are
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+ *     reset. The child containers are entered recursively and the
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+ *     objects reset. All the objects (including the child containers)
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+ *     are closed.
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+ *   - bit 0 set - all the objects inside the container are reset.
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+ *     However the child containers are not entered recursively.
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+ *     This option is supported for API versions >= 6.5
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+ * In case a software context crashes or becomes non-responsive, the parent
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+ * may wish to reset its resources container before the software context is
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+ * restarted.
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+ *
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+ * This routine informs all objects assigned to the child container that the
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+ * container is being reset, so they may perform any cleanup operations that are
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+ * needed. All objects handles that were owned by the child container shall be
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+ * closed.
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+ *
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+ * Note that such request may be submitted even if the child software context
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+ * has not crashed, but the resulting object cleanup operations will not be
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+ * aware of that.
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+ *
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+ * Return:	'0' on Success; Error code otherwise.
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+ */
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+int dprc_reset_container(struct fsl_mc_io *mc_io,
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+			 u32 cmd_flags,
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+			 u16 token,
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+			 int child_container_id,
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+			 u32 options)
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+{
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+	struct fsl_mc_command cmd = { 0 };
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+	struct dprc_cmd_reset_container *cmd_params;
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+	u32 cmdid = DPRC_CMDID_RESET_CONT;
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+	int err;
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+
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+	/*
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+	 * If the DPRC object version was not yet cached, cache it now.
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+	 * Otherwise use the already cached value.
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+	 */
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+	if (!dprc_major_ver && !dprc_minor_ver) {
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+		err = dprc_get_api_version(mc_io, 0,
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+				&dprc_major_ver,
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+				&dprc_minor_ver);
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+		if (err)
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+			return err;
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+	}
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+
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+	/*
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+	 * MC API 6.5 introduced a new field in the command used to pass
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+	 * some flags.
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+	 * Bit 0 indicates that the child containers are not recursively reset.
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+	 */
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+	if (dprc_major_ver > 6 || (dprc_major_ver == 6 && dprc_minor_ver >= 5))
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+		cmdid = DPRC_CMDID_RESET_CONT_V2;
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+
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+	/* prepare command */
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+	cmd.header = mc_encode_cmd_header(cmdid, cmd_flags, token);
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+	cmd_params = (struct dprc_cmd_reset_container *)cmd.params;
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+	cmd_params->child_container_id = cpu_to_le32(child_container_id);
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+	cmd_params->options = cpu_to_le32(options);
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+
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+	/* send command to mc*/
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+	return mc_send_command(mc_io, &cmd);
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+}
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+EXPORT_SYMBOL_GPL(dprc_reset_container);
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 /**
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  * dprc_set_irq() - Set IRQ information for the DPRC to trigger an interrupt.
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@@ -281,7 +360,7 @@
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 	/* retrieve response parameters */
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 	rsp_params = (struct dprc_rsp_get_attributes *)cmd.params;
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 	attr->container_id = le32_to_cpu(rsp_params->container_id);
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-	attr->icid = le16_to_cpu(rsp_params->icid);
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+	attr->icid = le32_to_cpu(rsp_params->icid);
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 	attr->options = le32_to_cpu(rsp_params->options);
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 	attr->portal_id = le32_to_cpu(rsp_params->portal_id);
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366
 
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@@ -445,9 +524,43 @@
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 	struct dprc_rsp_get_obj_region *rsp_params;
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 	int err;
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-	/* prepare command */
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-	cmd.header = mc_encode_cmd_header(DPRC_CMDID_GET_OBJ_REG,
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-					  cmd_flags, token);
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+    /*
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+     * If the DPRC object version was not yet cached, cache it now.
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+     * Otherwise use the already cached value.
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+     */
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+	if (!dprc_major_ver && !dprc_minor_ver) {
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+		err = dprc_get_api_version(mc_io, 0,
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+				      &dprc_major_ver,
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+				      &dprc_minor_ver);
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+		if (err)
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+			return err;
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+	}
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+
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+	if (dprc_major_ver > 6 || (dprc_major_ver == 6 && dprc_minor_ver >= 6)) {
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+		/*
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+		 * MC API version 6.6 changed the size of the MC portals and software
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+		 * portals to 64K (as implemented by hardware). If older API is in use the
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+		 * size reported is less (64 bytes for mc portals and 4K for software
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+		 * portals).
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+		 */
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+
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+		cmd.header = mc_encode_cmd_header(DPRC_CMDID_GET_OBJ_REG_V3,
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+						  cmd_flags, token);
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+
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+	} else if (dprc_major_ver == 6 && dprc_minor_ver >= 3) {
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+		/*
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+		 * MC API version 6.3 introduced a new field to the region
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+		 * descriptor: base_address. If the older API is in use then the base
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+		 * address is set to zero to indicate it needs to be obtained elsewhere
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+		 * (typically the device tree).
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+		 */
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+		cmd.header = mc_encode_cmd_header(DPRC_CMDID_GET_OBJ_REG_V2,
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+						  cmd_flags, token);
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+	} else {
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+		cmd.header = mc_encode_cmd_header(DPRC_CMDID_GET_OBJ_REG,
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+						  cmd_flags, token);
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+	}
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+
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 	cmd_params = (struct dprc_cmd_get_obj_region *)cmd.params;
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 	cmd_params->obj_id = cpu_to_le32(obj_id);
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 	cmd_params->region_index = region_index;
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@@ -461,8 +574,12 @@
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 	/* retrieve response parameters */
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 	rsp_params = (struct dprc_rsp_get_obj_region *)cmd.params;
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-	region_desc->base_offset = le64_to_cpu(rsp_params->base_addr);
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+	region_desc->base_offset = le64_to_cpu(rsp_params->base_offset);
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 	region_desc->size = le32_to_cpu(rsp_params->size);
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+	if (dprc_major_ver > 6 || (dprc_major_ver == 6 && dprc_minor_ver >= 3))
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+		region_desc->base_address = le64_to_cpu(rsp_params->base_addr);
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+	else
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+		region_desc->base_address = 0;
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 	return 0;
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 }
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@@ -530,3 +647,56 @@
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 	return 0;
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 }
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+
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+/**
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+ * dprc_get_connection() - Get connected endpoint and link status if connection
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+ *			exists.
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+ * @mc_io:	Pointer to MC portal's I/O object
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+ * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
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+ * @token:	Token of DPRC object
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+ * @endpoint1:	Endpoint 1 configuration parameters
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+ * @endpoint2:	Returned endpoint 2 configuration parameters
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+ * @state:	Returned link state:
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+ *		1 - link is up;
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+ *		0 - link is down;
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+ *		-1 - no connection (endpoint2 information is irrelevant)
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+ *
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+ * Return:     '0' on Success; -ENOTCONN if connection does not exist.
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+ */
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+int dprc_get_connection(struct fsl_mc_io *mc_io,
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+			u32 cmd_flags,
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+			u16 token,
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+			const struct dprc_endpoint *endpoint1,
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+			struct dprc_endpoint *endpoint2,
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+			int *state)
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+{
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+	struct dprc_cmd_get_connection *cmd_params;
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+	struct dprc_rsp_get_connection *rsp_params;
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+	struct fsl_mc_command cmd = { 0 };
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+	int err, i;
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+
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+	/* prepare command */
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+	cmd.header = mc_encode_cmd_header(DPRC_CMDID_GET_CONNECTION,
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+					  cmd_flags,
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+					  token);
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+	cmd_params = (struct dprc_cmd_get_connection *)cmd.params;
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+	cmd_params->ep1_id = cpu_to_le32(endpoint1->id);
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+	cmd_params->ep1_interface_id = cpu_to_le16(endpoint1->if_id);
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+	for (i = 0; i < 16; i++)
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+		cmd_params->ep1_type[i] = endpoint1->type[i];
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+
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+	/* send command to mc */
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+	err = mc_send_command(mc_io, &cmd);
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+	if (err)
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+		return -ENOTCONN;
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+
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+	/* retrieve response parameters */
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+	rsp_params = (struct dprc_rsp_get_connection *)cmd.params;
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+	endpoint2->id = le32_to_cpu(rsp_params->ep2_id);
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+	endpoint2->if_id = le16_to_cpu(rsp_params->ep2_interface_id);
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+	*state = le32_to_cpu(rsp_params->state);
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+	for (i = 0; i < 16; i++)
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+		endpoint2->type[i] = rsp_params->ep2_type[i];
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+
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+	return 0;
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+}