mm-drivers: hw_fence: add implementation of translation to synx API

Add implementation to translate the msm_hw_fence API into synx API.

Change-Id: I5d0b7afcc297a4e3c8ec4ed9867831b5d2dfc3af
Signed-off-by: Grace An <quic_gracan@quicinc.com>

hw_fence/Kbuild

@@ -3,7 +3,9 @@
 KDIR := $(TOP)/kernel_platform/msm-kernel
 include $(MSM_HW_FENCE_ROOT)/config/kalamammdrivers.conf
 LINUXINCLUDE += -include $(MSM_HW_FENCE_ROOT)/config/kalamammdriversconf.h \
-		-I$(MSM_HW_FENCE_ROOT)hw_fence/include/
+		-I$(MSM_HW_FENCE_ROOT)hw_fence/include/ \
+		-I$(MSM_HW_FENCE_ROOT)/../synx-kernel/msm/synx/ \
+		-I$(MSM_HW_FENCE_ROOT)/../synx-kernel/include/uapi/synx/media/
 
 ifdef CONFIG_QTI_HW_FENCE
 obj-m += msm_hw_fence.o
@@ -12,7 +14,8 @@ msm_hw_fence-y := src/msm_hw_fence.o \
 		src/hw_fence_drv_priv.o \
 		src/hw_fence_drv_utils.o \
 		src/hw_fence_drv_debug.o \
-		src/hw_fence_drv_ipc.o
+		src/hw_fence_drv_ipc.o \
+		src/msm_hw_fence_synx_translation.o
 
 msm_hw_fence-$(CONFIG_DEBUG_FS) += src/hw_fence_ioctl.o
 

hw_fence/src/msm_hw_fence.c

@@ -15,7 +15,7 @@
 #include "hw_fence_drv_ipc.h"
 
 struct hw_fence_driver_data *hw_fence_drv_data;
-static bool hw_fence_driver_enable;
+bool hw_fence_driver_enable;
 
 void *msm_hw_fence_register(enum hw_fence_client_id client_id_ext,
 	struct msm_hw_fence_mem_addr *mem_descriptor)

hw_fence/src/msm_hw_fence_synx_translation.c

@@ -0,0 +1,332 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2023 Qualcomm Innovation Center, Inc. All rights reserved.
+ */
+
+#include <linux/types.h>
+#include <linux/slab.h>
+#include <linux/soc/qcom/msm_hw_fence.h>
+#include "msm_hw_fence_synx_translation.h"
+#include "hw_fence_drv_priv.h"
+#include "hw_fence_drv_debug.h"
+
+/**
+ * MAX_SUPPORTED_DPU0:
+ * Maximum number of dpu clients supported
+ */
+#define MAX_SUPPORTED_DPU0 (HW_FENCE_CLIENT_ID_CTL5 - HW_FENCE_CLIENT_ID_CTL0)
+
+static int to_synx_status(int hw_fence_status_code)
+{
+	int synx_status_code;
+
+	switch (hw_fence_status_code) {
+	case 0:
+		synx_status_code = SYNX_SUCCESS;
+		break;
+	case -ENOMEM:
+		synx_status_code = -SYNX_NOMEM;
+		break;
+	case -EPERM:
+		synx_status_code = -SYNX_NOPERM;
+		break;
+	case -ETIMEDOUT:
+		synx_status_code = -SYNX_TIMEOUT;
+		break;
+	case -EALREADY:
+		synx_status_code = -SYNX_ALREADY;
+		break;
+	case -ENOENT:
+		synx_status_code = -SYNX_NOENT;
+		break;
+	case -EINVAL:
+		synx_status_code = -SYNX_INVALID;
+		break;
+	case -EBUSY:
+		synx_status_code = -SYNX_BUSY;
+		break;
+	default:
+		synx_status_code = hw_fence_status_code;
+		break;
+	}
+
+	return synx_status_code;
+}
+
+static enum hw_fence_client_id _get_hw_fence_client_id(enum synx_client_id synx_client_id)
+{
+	enum hw_fence_client_id hw_fence_client_id;
+
+	switch ((int)synx_client_id) {
+	case SYNX_CLIENT_HW_FENCE_GFX_CTX0:
+		hw_fence_client_id = HW_FENCE_CLIENT_ID_CTX0;
+		break;
+	case SYNX_CLIENT_HW_FENCE_IPE_CTX0 ... SYNX_CLIENT_HW_FENCE_IPE_CTX0 +
+			SYNX_MAX_SIGNAL_PER_CLIENT - 1:
+		hw_fence_client_id = synx_client_id - SYNX_CLIENT_HW_FENCE_IPE_CTX0 +
+			HW_FENCE_CLIENT_ID_IPE;
+		break;
+	case SYNX_CLIENT_HW_FENCE_VID_CTX0 ... SYNX_CLIENT_HW_FENCE_VID_CTX0 +
+			SYNX_MAX_SIGNAL_PER_CLIENT - 1:
+		hw_fence_client_id = synx_client_id - SYNX_CLIENT_HW_FENCE_VID_CTX0 +
+			HW_FENCE_CLIENT_ID_VPU;
+		break;
+	case SYNX_CLIENT_HW_FENCE_DPU0_CTL0 ... SYNX_CLIENT_HW_FENCE_DPU0_CTL0 + MAX_SUPPORTED_DPU0:
+		hw_fence_client_id = synx_client_id - SYNX_CLIENT_HW_FENCE_DPU0_CTL0 +
+			HW_FENCE_CLIENT_ID_CTL0;
+		break;
+	case SYNX_CLIENT_HW_FENCE_IFE0_CTX0 ... SYNX_CLIENT_HW_FENCE_IFE7_CTX0 +
+			SYNX_MAX_SIGNAL_PER_CLIENT - 1:
+		hw_fence_client_id = synx_client_id - SYNX_CLIENT_HW_FENCE_IFE0_CTX0 +
+			HW_FENCE_CLIENT_ID_IFE0;
+		break;
+	default:
+		HWFNC_ERR("Unsupported hw-fence client for synx_id:%d\n", synx_client_id);
+		hw_fence_client_id = HW_FENCE_CLIENT_MAX;
+		break;
+	}
+
+	return hw_fence_client_id;
+}
+
+static bool is_hw_fence_client(enum synx_client_id synx_client_id)
+{
+	return synx_client_id >= SYNX_HW_FENCE_CLIENT_START
+		&& synx_client_id < SYNX_HW_FENCE_CLIENT_END;
+}
+
+struct synx_session *synx_hwfence_initialize(struct synx_initialization_params *params)
+{
+	struct synx_session *session = NULL;
+	enum hw_fence_client_id client_id;
+	void *client_handle;
+
+	if (!hw_fence_driver_enable)
+		return ERR_PTR(-SYNX_INVALID);
+
+	if (IS_ERR_OR_NULL(params) || IS_ERR_OR_NULL(params->ptr)) {
+		HWFNC_ERR("invalid params:0x%pK params->ptr:0x%pK\n", params,
+			IS_ERR_OR_NULL(params) ? NULL : params->ptr);
+		return ERR_PTR(-SYNX_INVALID);
+	}
+
+	client_id = _get_hw_fence_client_id(params->id);
+	if (!is_hw_fence_client(params->id) || client_id == HW_FENCE_CLIENT_MAX) {
+		HWFNC_ERR("Initializing session for invalid synx_id:%d\n", params->id);
+		return ERR_PTR(-SYNX_INVALID);
+	}
+
+	session = kzalloc(sizeof(struct synx_session), GFP_KERNEL);
+	if (!session)
+		return ERR_PTR(-SYNX_NOMEM);
+
+	client_handle = msm_hw_fence_register(client_id,
+		(struct msm_hw_fence_mem_addr *)params->ptr);
+	if (IS_ERR_OR_NULL(client_handle)) {
+		kfree(session);
+		HWFNC_ERR("failed to initialize synx_id:%d ret:%d\n", params->id,
+			PTR_ERR(client_handle));
+		return ERR_PTR(to_synx_status(PTR_ERR(client_handle)));
+	}
+	session->client = client_handle;
+	session->type = params->id;
+	HWFNC_DBG_INIT("initialized session synx_id:%d hw_fence_id:%d\n", params->id, client_id);
+
+	return session;
+}
+EXPORT_SYMBOL(synx_hwfence_initialize);
+
+int synx_hwfence_uninitialize(struct synx_session *session)
+{
+	int ret;
+
+	if (IS_ERR_OR_NULL(session) || !is_hw_fence_client(session->type)) {
+		HWFNC_ERR("invalid session:0x%pK synx_id:%d\n", session,
+			IS_ERR_OR_NULL(session) ? -1 : session->type);
+		return -SYNX_INVALID;
+	}
+
+	ret = msm_hw_fence_deregister(session->client);
+	if (ret)
+		HWFNC_ERR("Failed to deregister synx_id:%d ret:%d\n", session->type, ret);
+	else
+		kfree(session);
+
+	return to_synx_status(ret);
+}
+EXPORT_SYMBOL(synx_hwfence_uninitialize);
+
+int synx_hwfence_create(struct synx_session *session, struct synx_create_params *params)
+{
+	int ret = 0;
+	struct msm_hw_fence_create_params hwfence_params;
+	u64 handle;
+
+	if (IS_ERR_OR_NULL(session) || !is_hw_fence_client(session->type) ||
+			IS_ERR_OR_NULL(params)) {
+		HWFNC_ERR("invalid session:0x%pK synx_id:%d params:0x%pK\n", session,
+			IS_ERR_OR_NULL(session) ? -1 : session->type, params);
+		return -SYNX_INVALID;
+	}
+
+	if (IS_ERR_OR_NULL(params->h_synx) || (params->flags != SYNX_CREATE_DMA_FENCE) ||
+			IS_ERR_OR_NULL(params->fence)) {
+		HWFNC_ERR("synx_id:%d invalid create params h_synx:0x%pK flags:0x%x fence:0x%pK\n",
+			session->type, params->h_synx, params->flags, params->fence);
+		return -SYNX_INVALID;
+	}
+
+	hwfence_params.fence = params->fence;
+	hwfence_params.handle = &handle;
+	ret = msm_hw_fence_create(session->client, &hwfence_params);
+	if (ret) {
+		HWFNC_ERR("synx_id:%d failed create fence:0x%pK flags:0x%x ret:%d\n", session->type,
+			params->fence, params->flags, ret);
+		return to_synx_status(ret);
+	}
+	if (handle > U32_MAX) {
+		HWFNC_ERR("synx_id:%d fence handle:%llu would overflow h_synx\n", session->type,
+			handle);
+		msm_hw_fence_destroy_with_handle(session->client, handle);
+		return -SYNX_INVALID;
+	}
+	*params->h_synx = handle;
+
+	return SYNX_SUCCESS;
+}
+EXPORT_SYMBOL(synx_hwfence_create);
+
+int synx_hwfence_release(struct synx_session *session, u32 h_synx)
+{
+	int ret;
+
+	if (IS_ERR_OR_NULL(session) || !is_hw_fence_client(session->type)) {
+		HWFNC_ERR("invalid session:0x%pK synx_id:%d\n", session,
+			IS_ERR_OR_NULL(session) ? -1 : session->type);
+		return -SYNX_INVALID;
+	}
+
+	ret = msm_hw_fence_destroy_with_handle(session->client, h_synx);
+	if (ret)
+		HWFNC_ERR("synx_id:%d failed to destroy fence h_synx:%u ret:%d\n", session->type,
+			h_synx, ret);
+
+	return to_synx_status(ret);
+}
+EXPORT_SYMBOL(synx_hwfence_release);
+
+int synx_hwfence_signal(struct synx_session *session, u32 h_synx, enum synx_signal_status status)
+{
+	int ret;
+
+	if (IS_ERR_OR_NULL(session) || !is_hw_fence_client(session->type)) {
+		HWFNC_ERR("invalid session:0x%pK synx_id:%d\n", session,
+			IS_ERR_OR_NULL(session) ? -1 : session->type);
+		return -SYNX_INVALID;
+	}
+
+	ret = msm_hw_fence_update_txq(session->client, h_synx, 0, (u32)status);
+	if (ret)
+		HWFNC_ERR("synx_id:%d failed to signal fence h_synx:%u status:%d ret:%d\n",
+			session->type, h_synx, status, ret);
+
+	return to_synx_status(ret);
+}
+EXPORT_SYMBOL(synx_hwfence_signal);
+
+int synx_hwfence_recover(enum synx_client_id id)
+{
+	int ret;
+
+	if (!is_hw_fence_client(id)) {
+		HWFNC_ERR("invalid synx_id:%d\n", id);
+		return -SYNX_INVALID;
+	}
+
+	ret = msm_hw_fence_reset_client_by_id(_get_hw_fence_client_id(id),
+		MSM_HW_FENCE_RESET_WITHOUT_DESTROY);
+	if (ret)
+		HWFNC_ERR("synx_id:%d failed to recover ret:%d\n", id, ret);
+
+	return to_synx_status(ret);
+}
+EXPORT_SYMBOL(synx_hwfence_recover);
+
+static int synx_hwfence_import_indv(void *client, struct synx_import_indv_params *params)
+{
+	u64 handle;
+	int ret;
+
+	if (IS_ERR_OR_NULL(client) || IS_ERR_OR_NULL(params) ||
+			IS_ERR_OR_NULL(params->new_h_synx) ||
+			(params->flags != SYNX_IMPORT_DMA_FENCE) || IS_ERR_OR_NULL(params->fence)) {
+		HWFNC_ERR("invalid client:0x%pK params:0x%pK h_synx:0x%pK flags:0x%x fence:0x%pK\n",
+			client, params, IS_ERR_OR_NULL(params) ? NULL : params->new_h_synx,
+			IS_ERR_OR_NULL(params) ? 0 : params->flags,
+			IS_ERR_OR_NULL(params) ? NULL : params->fence);
+		return -SYNX_INVALID;
+	}
+
+	ret = msm_hw_fence_wait_update_v2(client, (struct dma_fence **)&params->fence, &handle,
+		NULL, 1, true);
+	if (ret) {
+		HWFNC_ERR("failed to import fence:0x%pK flags:0x%x ret:%d\n", params->fence,
+			params->flags, ret);
+		return to_synx_status(ret);
+	}
+	if (handle > U32_MAX) {
+		HWFNC_ERR("fence handle:%llu would overflow new_h_synx\n", handle);
+		msm_hw_fence_wait_update_v2(client, (struct dma_fence **)&params->fence, &handle,
+			NULL, 1, false);
+		return -SYNX_INVALID;
+	}
+	*params->new_h_synx = handle;
+
+	return SYNX_SUCCESS;
+}
+
+static int synx_hwfence_import_arr(void *client, struct synx_import_arr_params *params)
+{
+	int i, ret;
+
+	if (IS_ERR_OR_NULL(client) || IS_ERR_OR_NULL(params) || !params->num_fences) {
+		HWFNC_ERR("invalid import arr client:0x%pK params:0x%pK num_fences:%u\n", client,
+			params, IS_ERR_OR_NULL(params) ? -1 : params->num_fences);
+		return -SYNX_INVALID;
+	}
+
+	for (i = 0; i < params->num_fences; i++) {
+		ret = synx_hwfence_import_indv(client, &params->list[i]);
+		if (ret) {
+			HWFNC_ERR("importing fence[%u] 0x%pK failed ret:%d\n", i,
+				params->list[i].fence, ret);
+			return ret;
+		}
+	}
+
+	return SYNX_SUCCESS;
+}
+
+int synx_hwfence_import(struct synx_session *session, struct synx_import_params *params)
+{
+	int ret;
+
+	if (IS_ERR_OR_NULL(session) || !is_hw_fence_client(session->type)
+			|| IS_ERR_OR_NULL(params)) {
+		HWFNC_ERR("invalid session:0x%pK synx_id:%d params:0x%pK\n", session,
+			IS_ERR_OR_NULL(session) ? -1 : session->type, params);
+		return -SYNX_INVALID;
+	}
+
+	if (params->type == SYNX_IMPORT_ARR_PARAMS)
+		ret = synx_hwfence_import_arr(session->client, &params->arr);
+	else
+		ret = synx_hwfence_import_indv(session->client, &params->indv);
+
+	if (ret)
+		HWFNC_ERR("synx_id:%d failed to import type:%s fences ret:%d\n", session->type,
+			(params->type == SYNX_IMPORT_ARR_PARAMS) ? "arr" : "indv", ret);
+
+	return ret;
+}
+EXPORT_SYMBOL(synx_hwfence_import);