Merge tag 'i3c/for-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linuxgrafted

Pull I3C updates from Alexandre Belloni:
 "A new driver this cycle, for the AMD AXI I3C controller.

  There are also new features such as IBI wakeup support, SETAASA device
  discovery and ACPI support for the the DAA methods, meaning we can now
  communicate with the SPD devices on DDR5 modules.

  New driver:
   - AMD AXI I3C master controller

  Subsystem:
   - I3C Common Command Code (CCC) handling improvements, especially
     around GET CCCs
   - SETAASA device discovery support
   - ACPI support for all existing DAA methods like SETDASA, SETNEWDA as
     well as I2C devices on I3C bus
   - IBI-based wakeup support

  Drivers:
   - dw: SETAASA support
   - mipi-i3c-hci: advertise IBI wakeup capability, AMD_PT I3C
     controller support, PIO queue management support for HCI v1.2
   - renesas: improve suspend to RAM support, add runtime PM support"

* tag 'i3c/for-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linux: (70 commits)
  i3c: dw: reduce do_daa time if there's no client
  i3c: mipi-i3c-hci: Add support for AMD_PT I3C controller
  i3c: mipi-i3c-hci: Add PIO queue management support for HCI v1.2
  i3c: mipi-i3c-hci: Fix missing STAT_IBI_STATUS_THLD in PIO mode
  i3c: dw: rename "pclk" to "apb" to match dt-binding
  i3c: dw: make struct dw_i3c_cmd smaller
  i3c: dw: use COMMAND_PORT_TRANSFER_ARG instead of hardcoding
  i3c: renesas: Don't register devices when ENTDAA times out
  i3c: master: dw-i3c-master: fix OD timing for first broadcast
  i3c: mipi-i3c-hci: Advertise IBI wakeup capability
  i3c: mipi-i3c-hci: Factor out i3c_hci_sysdev()
  i3c: mipi-i3c-hci-pci: Propagate I3C wakeup requirements to PCI
  i3c: master: Reject IBI requests from non-IBI-capable devices
  i3c: master: Add helper to query bus wakeup requirements
  i3c: master: Report wakeup events for IBIs
  i3c: master: Support IBI-based wakeup capability
  i3c: master: Fix potential UAF in i3c_device_match()
  i3c: master: Fix potential UAF in i3c_device_uevent()
  i3c: Make dev->desc locking assumptions explicit
  i3c: master: Fix use-after-free of master->this
  ...

1 files changed, 185 insertions, 0 deletions

diff --git a/drivers/tee/qcomtee/qcomtee.h b/drivers/tee/qcomtee/qcomtee.h
new file mode 100644
index 000000000..f39bf63fd
--- /dev/null
+++ b/drivers/tee/qcomtee/qcomtee.h
@@ -0,0 +1,185 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries.
+ */
+
+#ifndef QCOMTEE_H
+#define QCOMTEE_H
+
+#include <linux/kobject.h>
+#include <linux/tee_core.h>
+
+#include "qcomtee_msg.h"
+#include "qcomtee_object.h"
+
+/* Flags relating to object reference. */
+#define QCOMTEE_OBJREF_FLAG_TEE		BIT(0)
+#define QCOMTEE_OBJREF_FLAG_USER	BIT(1)
+#define QCOMTEE_OBJREF_FLAG_MEM		BIT(2)
+
+/**
+ * struct qcomtee - Main service struct.
+ * @teedev: client device.
+ * @pool: shared memory pool.
+ * @ctx: driver private context.
+ * @oic: context to use for the current driver invocation.
+ * @wq: workqueue for QTEE async operations.
+ * @xa_local_objects: array of objects exported to QTEE.
+ * @xa_last_id: next ID to allocate.
+ * @qtee_version: QTEE version.
+ */
+struct qcomtee {
+	struct tee_device *teedev;
+	struct tee_shm_pool *pool;
+	struct tee_context *ctx;
+	struct qcomtee_object_invoke_ctx oic;
+	struct workqueue_struct *wq;
+	struct xarray xa_local_objects;
+	u32 xa_last_id;
+	u32 qtee_version;
+};
+
+void qcomtee_fetch_async_reqs(struct qcomtee_object_invoke_ctx *oic);
+struct qcomtee_object *qcomtee_idx_erase(struct qcomtee_object_invoke_ctx *oic,
+					 u32 idx);
+
+struct tee_shm_pool *qcomtee_shm_pool_alloc(void);
+void qcomtee_msg_buffers_free(struct qcomtee_object_invoke_ctx *oic);
+int qcomtee_msg_buffers_alloc(struct qcomtee_object_invoke_ctx *oic,
+			      struct qcomtee_arg *u);
+
+/**
+ * qcomtee_object_do_invoke_internal() - Submit an invocation for an object.
+ * @oic: context to use for the current invocation.
+ * @object: object being invoked.
+ * @op: requested operation on the object.
+ * @u: array of arguments for the current invocation.
+ * @result: result returned from QTEE.
+ *
+ * The caller is responsible for keeping track of the refcount for each
+ * object, including @object. On return, the caller loses ownership of all
+ * input objects of type %QCOMTEE_OBJECT_TYPE_CB.
+ *
+ * Return: On success, returns 0; on failure, returns < 0.
+ */
+int qcomtee_object_do_invoke_internal(struct qcomtee_object_invoke_ctx *oic,
+				      struct qcomtee_object *object, u32 op,
+				      struct qcomtee_arg *u, int *result);
+
+/**
+ * struct qcomtee_context_data - Clients' or supplicants' context.
+ * @qtee_objects_idr: QTEE objects in this context.
+ * @qtee_lock: mutex for @qtee_objects_idr.
+ * @reqs_idr: requests in this context that hold ID.
+ * @reqs_list: FIFO for requests in PROCESSING or QUEUED state.
+ * @reqs_lock: mutex for @reqs_idr, @reqs_list and request states.
+ * @req_c: completion used when the supplicant is waiting for requests.
+ * @released: state of this context.
+ */
+struct qcomtee_context_data {
+	struct idr qtee_objects_idr;
+	/* Synchronize access to @qtee_objects_idr. */
+	struct mutex qtee_lock;
+
+	struct idr reqs_idr;
+	struct list_head reqs_list;
+	/* Synchronize access to @reqs_idr, @reqs_list and updating requests states. */
+	struct mutex reqs_lock;
+
+	struct completion req_c;
+
+	bool released;
+};
+
+int qcomtee_context_add_qtee_object(struct tee_param *param,
+				    struct qcomtee_object *object,
+				    struct tee_context *ctx);
+int qcomtee_context_find_qtee_object(struct qcomtee_object **object,
+				     struct tee_param *param,
+				     struct tee_context *ctx);
+void qcomtee_context_del_qtee_object(struct tee_param *param,
+				     struct tee_context *ctx);
+
+int qcomtee_objref_to_arg(struct qcomtee_arg *arg, struct tee_param *param,
+			  struct tee_context *ctx);
+int qcomtee_objref_from_arg(struct tee_param *param, struct qcomtee_arg *arg,
+			    struct tee_context *ctx);
+
+/* OBJECTS: */
+
+/* (1) User Object API. */
+
+int is_qcomtee_user_object(struct qcomtee_object *object);
+void qcomtee_user_object_set_notify(struct qcomtee_object *object, bool notify);
+void qcomtee_requests_destroy(struct qcomtee_context_data *ctxdata);
+int qcomtee_user_param_to_object(struct qcomtee_object **object,
+				 struct tee_param *param,
+				 struct tee_context *ctx);
+int qcomtee_user_param_from_object(struct tee_param *param,
+				   struct qcomtee_object *object,
+				   struct tee_context *ctx);
+
+/**
+ * struct qcomtee_user_object_request_data - Data for user object request.
+ * @id: ID assigned to the request.
+ * @object_id: Object ID being invoked by QTEE.
+ * @op: Requested operation on object.
+ * @np: Number of parameters in the request.
+ */
+struct qcomtee_user_object_request_data {
+	int id;
+	u64 object_id;
+	u32 op;
+	int np;
+};
+
+int qcomtee_user_object_select(struct tee_context *ctx,
+			       struct tee_param *params, int num_params,
+			       void __user *uaddr, size_t size,
+			       struct qcomtee_user_object_request_data *data);
+int qcomtee_user_object_submit(struct tee_context *ctx,
+			       struct tee_param *params, int num_params,
+			       int req_id, int errno);
+
+/* (2) Primordial Object. */
+extern struct qcomtee_object qcomtee_primordial_object;
+
+/* (3) Memory Object API. */
+
+/* Is it a memory object using tee_shm? */
+int is_qcomtee_memobj_object(struct qcomtee_object *object);
+
+/**
+ * qcomtee_memobj_param_to_object() - OBJREF parameter to &struct qcomtee_object.
+ * @object: object returned.
+ * @param: TEE parameter.
+ * @ctx: context in which the conversion should happen.
+ *
+ * @param is an OBJREF with %QCOMTEE_OBJREF_FLAG_MEM flags.
+ *
+ * Return: On success return 0 or <0 on failure.
+ */
+int qcomtee_memobj_param_to_object(struct qcomtee_object **object,
+				   struct tee_param *param,
+				   struct tee_context *ctx);
+
+/* Reverse what qcomtee_memobj_param_to_object() does. */
+int qcomtee_memobj_param_from_object(struct tee_param *param,
+				     struct qcomtee_object *object,
+				     struct tee_context *ctx);
+
+/**
+ * qcomtee_mem_object_map() - Map a memory object.
+ * @object: memory object.
+ * @map_object: created mapping object.
+ * @mem_paddr: physical address of the memory.
+ * @mem_size: size of the memory.
+ * @perms: QTEE access permissions.
+ *
+ * Return: On success return 0 or <0 on failure.
+ */
+int qcomtee_mem_object_map(struct qcomtee_object *object,
+			   struct qcomtee_object **map_object, u64 *mem_paddr,
+			   u64 *mem_size, u32 *perms);
+
+#endif /* QCOMTEE_H */