Merge tag 'ffa-updates-6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux into arm/drivers

Arm FF-A firmware driver updates for v6.1

Small set of changes in preparation to add support for FF-A v1.1
specification later. It mainly contains:

1. Splitting up ffa_ops into different categories namely information,
   message and memory. It helps to make info and memory operations
   independent from ffa_device so thata generic memory management
   module can use it without specific ffa_dev.
2. Adds support for querying FF-A features and use the same to detect
   the support for 64-bit operations.
3. Adds v1.1 get_partition_info support and use the same to set up
   32-bit execution mode flag automatically.
4. Adds pointer to the ffa_dev_ops in struct ffa_dev and drop
   ffa_dev_ops_get() which enables to drop ffa_ops in optee_ffa
   structure using ffa_dev->ops directly. Additionally ffa_dev_ops is
   renamed as ffa_ops.

* tag 'ffa-updates-6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux:
  firmware: arm_ffa: Split up ffa_ops into info, message and memory operations
  firmware: arm_ffa: Set up 32bit execution mode flag using partiion property
  firmware: arm_ffa: Add v1.1 get_partition_info support
  firmware: arm_ffa: Rename ffa_dev_ops as ffa_ops
  firmware: arm_ffa: Make memory apis ffa_device independent
  firmware: arm_ffa: Use FFA_FEATURES to detect if native versions are supported
  firmware: arm_ffa: Add support for querying FF-A features
  firmware: arm_ffa: Remove ffa_dev_ops_get()
  tee: optee: Drop ffa_ops in optee_ffa structure using ffa_dev->ops directly
  firmware: arm_ffa: Add pointer to the ffa_dev_ops in struct ffa_dev

Link: https://lore.kernel.org/r/20220913100612.2924643-1-sudeep.holla@arm.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

2 files changed, 22 insertions, 25 deletions

diff --git a/drivers/tee/optee/ffa_abi.c b/drivers/tee/optee/ffa_abi.c
index 7ab31740cff8..0828240f27e6 100644
--- a/drivers/tee/optee/ffa_abi.c
+++ b/drivers/tee/optee/ffa_abi.c
@@ -271,8 +271,8 @@ static int optee_ffa_shm_register(struct tee_context *ctx, struct tee_shm *shm,
 				  unsigned long start)
 {
 	struct optee *optee = tee_get_drvdata(ctx->teedev);
-	const struct ffa_dev_ops *ffa_ops = optee->ffa.ffa_ops;
 	struct ffa_device *ffa_dev = optee->ffa.ffa_dev;
+	const struct ffa_mem_ops *mem_ops = ffa_dev->ops->mem_ops;
 	struct ffa_mem_region_attributes mem_attr = {
 		.receiver = ffa_dev->vm_id,
 		.attrs = FFA_MEM_RW,
@@ -294,14 +294,14 @@ static int optee_ffa_shm_register(struct tee_context *ctx, struct tee_shm *shm,
 	if (rc)
 		return rc;
 	args.sg = sgt.sgl;
-	rc = ffa_ops->memory_share(ffa_dev, &args);
+	rc = mem_ops->memory_share(&args);
 	sg_free_table(&sgt);
 	if (rc)
 		return rc;
 
 	rc = optee_shm_add_ffa_handle(optee, shm, args.g_handle);
 	if (rc) {
-		ffa_ops->memory_reclaim(args.g_handle, 0);
+		mem_ops->memory_reclaim(args.g_handle, 0);
 		return rc;
 	}
 
@@ -314,8 +314,9 @@ static int optee_ffa_shm_unregister(struct tee_context *ctx,
 				    struct tee_shm *shm)
 {
 	struct optee *optee = tee_get_drvdata(ctx->teedev);
-	const struct ffa_dev_ops *ffa_ops = optee->ffa.ffa_ops;
 	struct ffa_device *ffa_dev = optee->ffa.ffa_dev;
+	const struct ffa_msg_ops *msg_ops = ffa_dev->ops->msg_ops;
+	const struct ffa_mem_ops *mem_ops = ffa_dev->ops->mem_ops;
 	u64 global_handle = shm->sec_world_id;
 	struct ffa_send_direct_data data = {
 		.data0 = OPTEE_FFA_UNREGISTER_SHM,
@@ -327,11 +328,11 @@ static int optee_ffa_shm_unregister(struct tee_context *ctx,
 	optee_shm_rem_ffa_handle(optee, global_handle);
 	shm->sec_world_id = 0;
 
-	rc = ffa_ops->sync_send_receive(ffa_dev, &data);
+	rc = msg_ops->sync_send_receive(ffa_dev, &data);
 	if (rc)
 		pr_err("Unregister SHM id 0x%llx rc %d\n", global_handle, rc);
 
-	rc = ffa_ops->memory_reclaim(global_handle, 0);
+	rc = mem_ops->memory_reclaim(global_handle, 0);
 	if (rc)
 		pr_err("mem_reclaim: 0x%llx %d", global_handle, rc);
 
@@ -342,7 +343,7 @@ static int optee_ffa_shm_unregister_supp(struct tee_context *ctx,
 					 struct tee_shm *shm)
 {
 	struct optee *optee = tee_get_drvdata(ctx->teedev);
-	const struct ffa_dev_ops *ffa_ops = optee->ffa.ffa_ops;
+	const struct ffa_mem_ops *mem_ops;
 	u64 global_handle = shm->sec_world_id;
 	int rc;
 
@@ -353,7 +354,8 @@ static int optee_ffa_shm_unregister_supp(struct tee_context *ctx,
 	 */
 
 	optee_shm_rem_ffa_handle(optee, global_handle);
-	rc = ffa_ops->memory_reclaim(global_handle, 0);
+	mem_ops = optee->ffa.ffa_dev->ops->mem_ops;
+	rc = mem_ops->memory_reclaim(global_handle, 0);
 	if (rc)
 		pr_err("mem_reclaim: 0x%llx %d", global_handle, rc);
 
@@ -529,8 +531,8 @@ static int optee_ffa_yielding_call(struct tee_context *ctx,
 				   struct optee_msg_arg *rpc_arg)
 {
 	struct optee *optee = tee_get_drvdata(ctx->teedev);
-	const struct ffa_dev_ops *ffa_ops = optee->ffa.ffa_ops;
 	struct ffa_device *ffa_dev = optee->ffa.ffa_dev;
+	const struct ffa_msg_ops *msg_ops = ffa_dev->ops->msg_ops;
 	struct optee_call_waiter w;
 	u32 cmd = data->data0;
 	u32 w4 = data->data1;
@@ -541,7 +543,7 @@ static int optee_ffa_yielding_call(struct tee_context *ctx,
 	/* Initialize waiter */
 	optee_cq_wait_init(&optee->call_queue, &w);
 	while (true) {
-		rc = ffa_ops->sync_send_receive(ffa_dev, data);
+		rc = msg_ops->sync_send_receive(ffa_dev, data);
 		if (rc)
 			goto done;
 
@@ -576,7 +578,7 @@ static int optee_ffa_yielding_call(struct tee_context *ctx,
 		 * OP-TEE has returned with a RPC request.
 		 *
 		 * Note that data->data4 (passed in register w7) is already
-		 * filled in by ffa_ops->sync_send_receive() returning
+		 * filled in by ffa_mem_ops->sync_send_receive() returning
 		 * above.
 		 */
 		cond_resched();
@@ -652,14 +654,15 @@ static int optee_ffa_do_call_with_arg(struct tee_context *ctx,
  */
 
 static bool optee_ffa_api_is_compatbile(struct ffa_device *ffa_dev,
-					const struct ffa_dev_ops *ops)
+					const struct ffa_ops *ops)
 {
+	const struct ffa_msg_ops *msg_ops = ops->msg_ops;
 	struct ffa_send_direct_data data = { OPTEE_FFA_GET_API_VERSION };
 	int rc;
 
-	ops->mode_32bit_set(ffa_dev);
+	msg_ops->mode_32bit_set(ffa_dev);
 
-	rc = ops->sync_send_receive(ffa_dev, &data);
+	rc = msg_ops->sync_send_receive(ffa_dev, &data);
 	if (rc) {
 		pr_err("Unexpected error %d\n", rc);
 		return false;
@@ -672,7 +675,7 @@ static bool optee_ffa_api_is_compatbile(struct ffa_device *ffa_dev,
 	}
 
 	data = (struct ffa_send_direct_data){ OPTEE_FFA_GET_OS_VERSION };
-	rc = ops->sync_send_receive(ffa_dev, &data);
+	rc = msg_ops->sync_send_receive(ffa_dev, &data);
 	if (rc) {
 		pr_err("Unexpected error %d\n", rc);
 		return false;
@@ -687,14 +690,14 @@ static bool optee_ffa_api_is_compatbile(struct ffa_device *ffa_dev,
 }
 
 static bool optee_ffa_exchange_caps(struct ffa_device *ffa_dev,
-				    const struct ffa_dev_ops *ops,
+				    const struct ffa_ops *ops,
 				    u32 *sec_caps,
 				    unsigned int *rpc_param_count)
 {
 	struct ffa_send_direct_data data = { OPTEE_FFA_EXCHANGE_CAPABILITIES };
 	int rc;
 
-	rc = ops->sync_send_receive(ffa_dev, &data);
+	rc = ops->msg_ops->sync_send_receive(ffa_dev, &data);
 	if (rc) {
 		pr_err("Unexpected error %d", rc);
 		return false;
@@ -783,7 +786,7 @@ static void optee_ffa_remove(struct ffa_device *ffa_dev)
 
 static int optee_ffa_probe(struct ffa_device *ffa_dev)
 {
-	const struct ffa_dev_ops *ffa_ops;
+	const struct ffa_ops *ffa_ops;
 	unsigned int rpc_param_count;
 	struct tee_shm_pool *pool;
 	struct tee_device *teedev;
@@ -793,11 +796,7 @@ static int optee_ffa_probe(struct ffa_device *ffa_dev)
 	u32 sec_caps;
 	int rc;
 
-	ffa_ops = ffa_dev_ops_get(ffa_dev);
-	if (!ffa_ops) {
-		pr_warn("failed \"method\" init: ffa\n");
-		return -ENOENT;
-	}
+	ffa_ops = ffa_dev->ops;
 
 	if (!optee_ffa_api_is_compatbile(ffa_dev, ffa_ops))
 		return -EINVAL;
@@ -821,7 +820,6 @@ static int optee_ffa_probe(struct ffa_device *ffa_dev)
 
 	optee->ops = &optee_ffa_ops;
 	optee->ffa.ffa_dev = ffa_dev;
-	optee->ffa.ffa_ops = ffa_ops;
 	optee->rpc_param_count = rpc_param_count;
 
 	teedev = tee_device_alloc(&optee_ffa_clnt_desc, NULL, optee->pool,
diff --git a/drivers/tee/optee/optee_private.h b/drivers/tee/optee/optee_private.h
index a33d98d17cfd..04ae58892608 100644
--- a/drivers/tee/optee/optee_private.h
+++ b/drivers/tee/optee/optee_private.h
@@ -111,7 +111,6 @@ struct optee_smc {
  */
 struct optee_ffa {
 	struct ffa_device *ffa_dev;
-	const struct ffa_dev_ops *ffa_ops;
 	/* Serializes access to @global_ids */
 	struct mutex mutex;
 	struct rhashtable global_ids;