mirror of
https://github.com/switchbrew/libnx.git
synced 2025-06-21 12:32:40 +02:00
47 lines
892 B
C
47 lines
892 B
C
#include <switch.h>
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static u32 g_ctrlgpu_fd = -1;
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static u64 g_refCnt;
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static nvioctl_gpu_characteristics g_gpu_characteristics;
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static u32 g_zcull_ctx_size;
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Result nvinfoInit()
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{
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Result rc;
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if (atomicIncrement64(&g_refCnt) > 0)
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return 0;
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rc = nvOpen(&g_ctrlgpu_fd, "/dev/nvhost-ctrl-gpu");
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if (R_FAILED(rc))
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g_ctrlgpu_fd = -1;
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if (R_SUCCEEDED(rc))
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rc = nvioctlNvhostCtrlGpu_GetCharacteristics(g_ctrlgpu_fd, &g_gpu_characteristics);
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if (R_SUCCEEDED(rc))
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rc = nvioctlNvhostCtrlGpu_ZCullGetCtxSize(g_ctrlgpu_fd, &g_zcull_ctx_size);
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if (R_FAILED(rc))
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nvinfoExit();
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return rc;
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}
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void nvinfoExit()
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{
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if (atomicDecrement64(&g_refCnt) == 0)
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{
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if (g_ctrlgpu_fd != -1)
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nvClose(g_ctrlgpu_fd);
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g_ctrlgpu_fd = -1;
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}
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}
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u32 nvinfoGetZcullCtxSize() {
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return g_zcull_ctx_size;
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}
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