mirror of
https://github.com/switchbrew/libnx.git
synced 2025-06-22 04:52:39 +02:00
55 lines
1.1 KiB
C
55 lines
1.1 KiB
C
#include <malloc.h>
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#include "types.h"
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#include "result.h"
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#include "arm/atomics.h"
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#include "kernel/svc.h"
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#include "services/nv.h"
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#include "nvidia/ioctl.h"
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#include "nvidia/buffer.h"
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#include "nvidia/info.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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