qcacld-3.0: Add the sysfs entry for policy manager commands

 Previously pm_cinfo,pm_pcl  would be queried via iwpriv
      --> iwpriv wlan0 pm_cinfo
 it is now changed to support via sysfs:
    --> cat /sys/class/net/wifi/pm_cinfo
    --> echo 1 > /sys/kernel/wifi/pm_pcl

Change-Id: I437eb6d4e9424f3aed9d1cf218333371c9a9f93b
CRs-Fixed: 2684258

Kbuild

@@ -361,6 +361,7 @@ endif
 ifeq ($(CONFIG_REMOVE_PKT_LOG), n)
 HDD_OBJS += $(HDD_SRC_DIR)/wlan_hdd_sysfs_pktlog.o
 endif
+HDD_OBJS += $(HDD_SRC_DIR)/wlan_hdd_sysfs_policy_mgr.o
 endif
 
 ifeq ($(CONFIG_QCACLD_FEATURE_FW_STATE), y)

core/hdd/inc/wlan_hdd_sysfs_policy_mgr.h

@@ -0,0 +1,84 @@
+/*
+ * Copyright (c) 2011-2020, The Linux Foundation. All rights reserved.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+#ifndef WLAN_HDD_SYSFS_POLICY_MGR_H
+#define WLAN_HDD_SYSFS_POLICY_MGR_H
+
+ #ifdef WLAN_SYSFS
+
+/**
+ * hdd_sysfs_pm_cinfo_create(): Initialize pm_cinfo specific sysfs
+ * @driver_kobject: Driver Kobject
+ *
+ * Function to initialize pm_cinfo specific mode syfs files.
+ *
+ * Return: NONE
+ */
+void hdd_sysfs_pm_cinfo_create(struct kobject *driver_kobject);
+
+/**
+ * hdd_sysfs_pm_cinfo_destroy(): Remove pm_cinfo sysfs file
+ * @driver_kobject: Driver Kobject
+ *
+ * Function to remove pm_cinfo specific mode syfs files.
+ *
+ * Return: NONE
+ */
+void hdd_sysfs_pm_cinfo_destroy(struct kobject *driver_kobject);
+
+/**
+ * hdd_sysfs_pm_pcl_create() - API to create pm_pcl
+ * @driver_kobject: sysfs driver kobject
+ *
+ * file path: /sys/kernel/wifi/pm_pcl
+ *
+ * usage:
+ *      echo [arg_0] > pm_pcl
+ *
+ * Return: 0 on success and errno on failure
+ */
+int hdd_sysfs_pm_pcl_create(struct kobject *driver_kobject);
+
+/**
+ * hdd_sysfs_pm_pcl_destroy() -
+ *   API to destroy pm_pcl
+ *
+ * Return: none
+ */
+void
+hdd_sysfs_pm_pcl_destroy(struct kobject *driver_kobject);
+#else
+static inline int
+hdd_sysfs_pm_pcl_create(struct kobject *driver_kobject)
+{
+	return 0;
+}
+
+static inline void
+hdd_sysfs_pm_pcl_destroy(struct kobject *driver_kobject)
+{
+}
+
+static inline
+void hdd_sysfs_pm_cinfo_create(struct kobject *driver_kobject)
+{
+}
+
+static inline
+void hdd_sysfs_pm_cinfo_destroy(struct kobject *driver_kobject)
+{
+}
+#endif
+#endif

core/hdd/src/wlan_hdd_sysfs.c

@@ -72,6 +72,7 @@
 #include <wlan_hdd_sysfs_motion_detection.h>
 #include <wlan_hdd_sysfs_ipa.h>
 #include <wlan_hdd_sysfs_pkt_log.h>
+#include <wlan_hdd_sysfs_policy_mgr.h>
 
 #define MAX_PSOC_ID_SIZE 10
 
@@ -773,12 +774,16 @@ void hdd_create_sysfs_files(struct hdd_context *hdd_ctx)
 		hdd_sysfs_dp_trace_create(driver_kobject);
 		hdd_sysfs_thermal_cfg_create(driver_kobject);
 		hdd_sysfs_pktlog_create(driver_kobject);
+		hdd_sysfs_pm_cinfo_create(driver_kobject);
+		hdd_sysfs_pm_pcl_create(driver_kobject);
 	}
 }
 
 void hdd_destroy_sysfs_files(void)
 {
 	if  (QDF_GLOBAL_MISSION_MODE == hdd_get_conparam()) {
+		hdd_sysfs_pm_pcl_destroy(driver_kobject);
+		hdd_sysfs_pm_cinfo_destroy(driver_kobject);
 		hdd_sysfs_pktlog_destroy(driver_kobject);
 		hdd_sysfs_thermal_cfg_destroy(driver_kobject);
 		hdd_sysfs_dp_trace_destroy(driver_kobject);

core/hdd/src/wlan_hdd_sysfs_policy_mgr.c

@@ -0,0 +1,201 @@
+/*
+ * Copyright (c) 2011-2020, The Linux Foundation. All rights reserved.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <wlan_hdd_main.h>
+#include <wlan_hdd_sysfs.h>
+#include <wlan_hdd_sysfs_policy_mgr.h>
+#include "osif_sync.h"
+#include <wlan_policy_mgr_api.h>
+
+static ssize_t hdd_pm_cinfo_show(struct hdd_context *hdd_ctx)
+{
+	struct policy_mgr_conc_connection_info *conn_info;
+	uint32_t i = 0, len = 0;
+
+	hdd_enter();
+
+	if (!wlan_hdd_validate_modules_state(hdd_ctx))
+		return -EINVAL;
+
+	conn_info = policy_mgr_get_conn_info(&len);
+	pr_info("+--------------------------+\n");
+	for (i = 0; i < len; i++) {
+		pr_info("|table_index[%d]\t\t\n", i);
+		pr_info("|\t|vdev_id - %-10d|\n", conn_info->vdev_id);
+		pr_info("|\t|freq    - %-10d|\n", conn_info->freq);
+		pr_info("|\t|bw      - %-10d|\n", conn_info->bw);
+		pr_info("|\t|mode    - %-10d|\n", conn_info->mode);
+		pr_info("|\t|mac     - %-10d|\n", conn_info->mac);
+		pr_info("|\t|in_use  - %-10d|\n", conn_info->in_use);
+		pr_info("+--------------------------+\n");
+		conn_info++;
+	}
+
+	hdd_exit();
+	return 0;
+}
+
+static ssize_t hdd_sysfs_pm_cminfo_show(struct kobject *kobj,
+					struct kobj_attribute *attr,
+					char *buf)
+{
+	struct osif_psoc_sync *psoc_sync;
+	struct hdd_context *hdd_ctx = cds_get_context(QDF_MODULE_ID_HDD);
+	ssize_t err_size;
+
+	if (wlan_hdd_validate_context(hdd_ctx))
+		return 0;
+
+	err_size = osif_psoc_sync_op_start(wiphy_dev(hdd_ctx->wiphy),
+					   &psoc_sync);
+	if (err_size)
+		return err_size;
+
+	err_size = hdd_pm_cinfo_show(hdd_ctx);
+
+	osif_psoc_sync_op_stop(psoc_sync);
+	return err_size;
+}
+
+static ssize_t
+__hdd_sysfs_pm_pcl_store(struct hdd_context *hdd_ctx,
+			 struct kobj_attribute *attr,
+			 const char *buf,
+			 size_t count)
+{
+	char buf_local[MAX_SYSFS_USER_COMMAND_SIZE_LENGTH + 1];
+	uint8_t weight_list[NUM_CHANNELS] = {0};
+	uint32_t pcl[NUM_CHANNELS] = {0};
+	uint32_t pcl_len = 0, val, i = 0;
+	char *sptr, *token;
+	QDF_STATUS status;
+	int ret;
+
+	if (!wlan_hdd_validate_modules_state(hdd_ctx))
+		return -EINVAL;
+
+	ret = hdd_sysfs_validate_and_copy_buf(buf_local, sizeof(buf_local),
+					      buf, count);
+
+	if (ret) {
+		hdd_err_rl("invalid input");
+		return ret;
+	}
+
+	sptr = buf_local;
+	hdd_debug("pm_pcl: count %zu buf_local:(%s)",
+		  count, buf_local);
+
+	/* Get val */
+	token = strsep(&sptr, " ");
+	if (!token)
+		return -EINVAL;
+	if (kstrtou32(token, 0, &val))
+		return -EINVAL;
+
+	if (!hdd_ctx->config->is_unit_test_framework_enabled) {
+		hdd_warn_rl("UT framework is disabled");
+		return -EINVAL;
+	}
+
+	status = policy_mgr_get_pcl(hdd_ctx->psoc, val,
+				    pcl, &pcl_len,
+				    weight_list, QDF_ARRAY_SIZE(weight_list));
+
+	if (status != QDF_STATUS_SUCCESS)
+		hdd_err("can't get pcl policy manager");
+
+	hdd_debug("PCL Freq list for role[%d] is {", val);
+	for (i = 0 ; i < pcl_len; i++)
+		hdd_debug(" %d, ", pcl[i]);
+	hdd_debug("}--------->\n");
+
+	return count;
+}
+
+static ssize_t
+hdd_sysfs_pm_pcl_store(struct kobject *kobj,
+		       struct kobj_attribute *attr,
+		       const char *buf,
+		       size_t count)
+{
+	struct osif_psoc_sync *psoc_sync;
+	struct hdd_context *hdd_ctx = cds_get_context(QDF_MODULE_ID_HDD);
+	ssize_t errno_size;
+	int ret;
+
+	ret = wlan_hdd_validate_context(hdd_ctx);
+	if (ret != 0)
+		return ret;
+
+	errno_size = osif_psoc_sync_op_start(wiphy_dev(hdd_ctx->wiphy),
+					     &psoc_sync);
+	if (errno_size)
+		return errno_size;
+
+	errno_size = __hdd_sysfs_pm_pcl_store(hdd_ctx, attr,
+					      buf, count);
+
+	osif_psoc_sync_op_stop(psoc_sync);
+
+	return errno_size;
+}
+
+static struct kobj_attribute pm_pcl_attribute =
+	__ATTR(pm_pcl, 0220, NULL,
+	       hdd_sysfs_pm_pcl_store);
+
+static struct kobj_attribute pm_cinfo_attribute =
+	__ATTR(pm_cinfo, 0440,
+	       hdd_sysfs_pm_cminfo_show, NULL);
+
+int hdd_sysfs_pm_pcl_create(struct kobject *driver_kobject)
+{
+	int error;
+
+	if (!driver_kobject) {
+		hdd_err("could not get driver kobject!");
+		return -EINVAL;
+	}
+
+	error = sysfs_create_file(driver_kobject,
+				  &pm_pcl_attribute.attr);
+	if (error)
+		hdd_err("could not create pm_pcl sysfs file");
+
+	return error;
+}
+
+void
+hdd_sysfs_pm_pcl_destroy(struct kobject *driver_kobject)
+{
+	if (!driver_kobject) {
+		hdd_err("could not get driver kobject!");
+		return;
+	}
+	sysfs_remove_file(driver_kobject, &pm_pcl_attribute.attr);
+}
+
+void hdd_sysfs_pm_cinfo_create(struct kobject *driver_kobject)
+{
+	if (sysfs_create_file(driver_kobject, &pm_cinfo_attribute.attr))
+		hdd_err("Failed to create pktlog sysfs entry");
+}
+
+void hdd_sysfs_pm_cinfo_destroy(struct kobject *driver_kobject)
+{
+	sysfs_remove_file(driver_kobject, &pm_cinfo_attribute.attr);
+}