Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 148 insertions, 0 deletions

diff --git a/drivers/soc/qcom/rpmh-internal.h b/drivers/soc/qcom/rpmh-internal.h
new file mode 100644
index 0000000000..e3cf1beff8
--- /dev/null
+++ b/drivers/soc/qcom/rpmh-internal.h
@@ -0,0 +1,148 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (c) 2016-2018, The Linux Foundation. All rights reserved.
+ */
+
+
+#ifndef __RPM_INTERNAL_H__
+#define __RPM_INTERNAL_H__
+
+#include <linux/bitmap.h>
+#include <linux/wait.h>
+#include <soc/qcom/tcs.h>
+
+#define TCS_TYPE_NR			4
+#define MAX_CMDS_PER_TCS		16
+#define MAX_TCS_PER_TYPE		3
+#define MAX_TCS_NR			(MAX_TCS_PER_TYPE * TCS_TYPE_NR)
+#define MAX_TCS_SLOTS			(MAX_CMDS_PER_TCS * MAX_TCS_PER_TYPE)
+
+struct rsc_drv;
+
+/**
+ * struct tcs_group: group of Trigger Command Sets (TCS) to send state requests
+ * to the controller
+ *
+ * @drv:       The controller.
+ * @type:      Type of the TCS in this group - active, sleep, wake.
+ * @mask:      Mask of the TCSes relative to all the TCSes in the RSC.
+ * @offset:    Start of the TCS group relative to the TCSes in the RSC.
+ * @num_tcs:   Number of TCSes in this type.
+ * @ncpt:      Number of commands in each TCS.
+ * @req:       Requests that are sent from the TCS; only used for ACTIVE_ONLY
+ *             transfers (could be on a wake/sleep TCS if we are borrowing for
+ *             an ACTIVE_ONLY transfer).
+ *             Start: grab drv->lock, set req, set tcs_in_use, drop drv->lock,
+ *                    trigger
+ *             End: get irq, access req,
+ *                  grab drv->lock, clear tcs_in_use, drop drv->lock
+ * @slots:     Indicates which of @cmd_addr are occupied; only used for
+ *             SLEEP / WAKE TCSs.  Things are tightly packed in the
+ *             case that (ncpt < MAX_CMDS_PER_TCS).  That is if ncpt = 2 and
+ *             MAX_CMDS_PER_TCS = 16 then bit[2] = the first bit in 2nd TCS.
+ */
+struct tcs_group {
+	struct rsc_drv *drv;
+	int type;
+	u32 mask;
+	u32 offset;
+	int num_tcs;
+	int ncpt;
+	const struct tcs_request *req[MAX_TCS_PER_TYPE];
+	DECLARE_BITMAP(slots, MAX_TCS_SLOTS);
+};
+
+/**
+ * struct rpmh_request: the message to be sent to rpmh-rsc
+ *
+ * @msg: the request
+ * @cmd: the payload that will be part of the @msg
+ * @completion: triggered when request is done
+ * @dev: the device making the request
+ * @needs_free: check to free dynamically allocated request object
+ */
+struct rpmh_request {
+	struct tcs_request msg;
+	struct tcs_cmd cmd[MAX_RPMH_PAYLOAD];
+	struct completion *completion;
+	const struct device *dev;
+	bool needs_free;
+};
+
+/**
+ * struct rpmh_ctrlr: our representation of the controller
+ *
+ * @cache: the list of cached requests
+ * @cache_lock: synchronize access to the cache data
+ * @dirty: was the cache updated since flush
+ * @batch_cache: Cache sleep and wake requests sent as batch
+ */
+struct rpmh_ctrlr {
+	struct list_head cache;
+	spinlock_t cache_lock;
+	bool dirty;
+	struct list_head batch_cache;
+};
+
+struct rsc_ver {
+	u32 major;
+	u32 minor;
+};
+
+/**
+ * struct rsc_drv: the Direct Resource Voter (DRV) of the
+ * Resource State Coordinator controller (RSC)
+ *
+ * @name:               Controller identifier.
+ * @base:               Start address of the DRV registers in this controller.
+ * @tcs_base:           Start address of the TCS registers in this controller.
+ * @id:                 Instance id in the controller (Direct Resource Voter).
+ * @num_tcs:            Number of TCSes in this DRV.
+ * @rsc_pm:             CPU PM notifier for controller.
+ *                      Used when solver mode is not present.
+ * @cpus_in_pm:         Number of CPUs not in idle power collapse.
+ *                      Used when solver mode and "power-domains" is not present.
+ * @genpd_nb:           PM Domain notifier for cluster genpd notifications.
+ * @tcs:                TCS groups.
+ * @tcs_in_use:         S/W state of the TCS; only set for ACTIVE_ONLY
+ *                      transfers, but might show a sleep/wake TCS in use if
+ *                      it was borrowed for an active_only transfer.  You
+ *                      must hold the lock in this struct (AKA drv->lock) in
+ *                      order to update this.
+ * @lock:               Synchronize state of the controller.  If RPMH's cache
+ *                      lock will also be held, the order is: drv->lock then
+ *                      cache_lock.
+ * @tcs_wait:           Wait queue used to wait for @tcs_in_use to free up a
+ *                      slot
+ * @client:             Handle to the DRV's client.
+ * @dev:                RSC device.
+ */
+struct rsc_drv {
+	const char *name;
+	void __iomem *base;
+	void __iomem *tcs_base;
+	int id;
+	int num_tcs;
+	struct notifier_block rsc_pm;
+	struct notifier_block genpd_nb;
+	atomic_t cpus_in_pm;
+	struct tcs_group tcs[TCS_TYPE_NR];
+	DECLARE_BITMAP(tcs_in_use, MAX_TCS_NR);
+	spinlock_t lock;
+	wait_queue_head_t tcs_wait;
+	struct rpmh_ctrlr client;
+	struct device *dev;
+	struct rsc_ver ver;
+	u32 *regs;
+};
+
+int rpmh_rsc_send_data(struct rsc_drv *drv, const struct tcs_request *msg);
+int rpmh_rsc_write_ctrl_data(struct rsc_drv *drv,
+			     const struct tcs_request *msg);
+void rpmh_rsc_invalidate(struct rsc_drv *drv);
+void rpmh_rsc_write_next_wakeup(struct rsc_drv *drv);
+
+void rpmh_tx_done(const struct tcs_request *msg);
+int rpmh_flush(struct rpmh_ctrlr *ctrlr);
+
+#endif /* __RPM_INTERNAL_H__ */