First Push

NVIDIA-Linux-x86_64-535.161.07-grid/kernel-open/nvidia-modeset/nvkms.h

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+/*
+ * SPDX-FileCopyrightText: Copyright (c) 2015 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
+ * SPDX-License-Identifier: MIT
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef __NV_KMS_H__
+#define __NV_KMS_H__
+
+#include "nvtypes.h"
+#if defined(NV_KERNEL_INTERFACE_LAYER) && defined(NV_LINUX)
+#include <linux/stddef.h> /* size_t */
+#else
+#include <stddef.h>       /* size_t */
+#endif
+
+#include "nvkms-kapi.h"
+
+typedef struct nvkms_per_open nvkms_per_open_handle_t;
+
+typedef void nvkms_procfs_out_string_func_t(void *data,
+                                            const char *str);
+
+typedef void nvkms_procfs_proc_t(void *data,
+                                 char *buffer, size_t size,
+                                 nvkms_procfs_out_string_func_t *outString);
+
+/* max number of loops to prevent hanging the kernel if an edge case is hit */
+#define NVKMS_READ_FILE_MAX_LOOPS 1000
+/* max size for any file read by the config system */
+#define NVKMS_READ_FILE_MAX_SIZE  8192
+
+/*
+ * The read file callback should allocate a buffer pointed to by *buff, fill it
+ * with the contents of fname, and return the size of the buffer. Buffer is not
+ * guaranteed to be null-terminated. The caller is responsible for freeing the
+ * buffer with nvkms_free, not nvFree.
+ */
+typedef size_t nvkms_config_read_file_func_t(char *fname,
+                                             char ** const buff);
+
+typedef struct {
+    const char *name;
+    nvkms_procfs_proc_t *func;
+} nvkms_procfs_file_t;
+
+enum NvKmsClientType {
+    NVKMS_CLIENT_USER_SPACE,
+    NVKMS_CLIENT_KERNEL_SPACE,
+};
+
+NvBool nvKmsIoctl(
+    void *pOpenVoid,
+    NvU32 cmd,
+    NvU64 paramsAddress,
+    const size_t paramSize);
+
+void nvKmsClose(void *pOpenVoid);
+
+void* nvKmsOpen(
+    NvU32 pid,
+    enum NvKmsClientType clientType,
+    nvkms_per_open_handle_t *pOpenKernel);
+
+NvBool nvKmsModuleLoad(void);
+
+void nvKmsModuleUnload(void);
+
+void nvKmsSuspend(NvU32 gpuId);
+void nvKmsResume(NvU32 gpuId);
+
+void nvKmsGetProcFiles(const nvkms_procfs_file_t **ppProcFiles);
+
+NvBool nvKmsReadConf(const char *buff, size_t size,
+                     nvkms_config_read_file_func_t readfile);
+
+void nvKmsKapiHandleEventQueueChange
+(
+    struct NvKmsKapiDevice *device
+);
+
+NvBool nvKmsKapiGetFunctionsTableInternal
+(
+    struct NvKmsKapiFunctionsTable *funcsTable
+);
+
+NvBool nvKmsGetBacklight(NvU32 display_id, void *drv_priv, NvU32 *brightness);
+NvBool nvKmsSetBacklight(NvU32 display_id, void *drv_priv, NvU32 brightness);
+
+#endif /* __NV_KMS_H__ */