mirror of
https://github.com/switchbrew/libnx.git
synced 2025-06-23 21:32:39 +02:00
96 lines
3.1 KiB
C
96 lines
3.1 KiB
C
#include <string.h>
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#include <malloc.h>
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#include <switch.h>
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static bool g_nvgfxInitialized = 0;
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static u32 g_nvgfx_fd_nvhostctrlgpu;
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static u32 g_nvgfx_fd_nvhostasgpu;
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static u32 g_nvgfx_fd_nvmap;
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static u32 g_nvgfx_nvmapobj;
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static gpu_characteristics g_nvgfx_gpu_characteristics;
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static u64 g_nvgfx_nvhostasgpu_allocspace_offset;
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static u8 *g_nvgfx_nvmap_mem;
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size_t g_nvgfx_nvmap_mem_size;
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Result nvgfxInitialize(void) {
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Result rc=0;
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if(g_nvgfxInitialized)return 0;
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g_nvgfx_fd_nvhostctrlgpu = 0;
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g_nvgfx_fd_nvhostasgpu = 0;
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g_nvgfx_fd_nvmap = 0;
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g_nvgfx_nvmapobj = 0;
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memset(&g_nvgfx_gpu_characteristics, 0, sizeof(gpu_characteristics));
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g_nvgfx_nvhostasgpu_allocspace_offset = 0;
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g_nvgfx_nvmap_mem_size = 0x10000;
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if (R_SUCCEEDED(rc)) {
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g_nvgfx_nvmap_mem = memalign(0x1000, g_nvgfx_nvmap_mem_size);
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if (g_nvgfx_nvmap_mem==NULL) rc = MAKERESULT(MODULE_LIBNX, LIBNX_OUTOFMEM);
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}
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//Officially NVHOST_IOCTL_CTRL_GET_CONFIG is used a lot (here and later), skip that.
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if (R_SUCCEEDED(rc)) rc = nvOpen(&g_nvgfx_fd_nvhostctrlgpu, "/dev/nvhost-ctrl-gpu");
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if (R_SUCCEEDED(rc)) rc = nvioctlNvhostCtrlGpu_GetCharacteristics(g_nvgfx_fd_nvhostctrlgpu, &g_nvgfx_gpu_characteristics);
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//Officially NVGPU_GPU_IOCTL_GET_TPC_MASKS is used here.
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//Officially NVGPU_GPU_IOCTL_ZCULL_GET_CTX_SIZE and NVGPU_GPU_IOCTL_ZCULL_GET_INFO are used here.
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if (R_SUCCEEDED(rc)) rc = nvOpen(&g_nvgfx_fd_nvhostasgpu, "/dev/nvhost-as-gpu");
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if (R_SUCCEEDED(rc)) rc = nvioctlNvhostAsGpu_InitializeEx(g_nvgfx_fd_nvhostasgpu, 1);
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//NVGPU_AS_IOCTL_GET_VA_REGIONS twice
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if (R_SUCCEEDED(rc)) rc = nvioctlNvhostAsGpu_AllocSpace(g_nvgfx_fd_nvhostasgpu, 0x10000, 0x1000, 0, 0x1000, &g_nvgfx_nvhostasgpu_allocspace_offset);
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if (R_SUCCEEDED(rc)) rc = nvOpen(&g_nvgfx_fd_nvmap, "/dev/nvmap");
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if (R_SUCCEEDED(rc)) rc = nvioctlNvmap_Create(g_nvgfx_fd_nvmap, g_nvgfx_nvmap_mem_size, &g_nvgfx_nvmapobj);
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if (R_SUCCEEDED(rc)) rc = nvioctlNvmap_Alloc(g_nvgfx_fd_nvmap, g_nvgfx_nvmapobj, 0, 0, 0x20000, 0, g_nvgfx_nvmap_mem);
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//Currently broken.
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if (R_SUCCEEDED(rc)) rc = nvioctlNvhostAsGpu_MapBufferEx(g_nvgfx_fd_nvhostasgpu, 4, 0, g_nvgfx_nvmapobj, 0x1000, 0, g_nvgfx_nvmap_mem_size, NULL);
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if (R_SUCCEEDED(rc)) rc = -1;
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if (R_SUCCEEDED(rc)) rc = nvioctlNvhostAsGpu_MapBufferEx(g_nvgfx_fd_nvhostasgpu, 4, 0xfe, g_nvgfx_nvmapobj, 0x1000, 0, g_nvgfx_nvmap_mem_size, NULL);
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if (R_FAILED(rc)) nvClose(g_nvgfx_fd_nvmap);
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if (R_FAILED(rc)) nvClose(g_nvgfx_fd_nvhostasgpu);
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if (R_FAILED(rc)) nvClose(g_nvgfx_fd_nvhostctrlgpu);
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if (g_nvgfx_nvmap_mem) {
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free(g_nvgfx_nvmap_mem);
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g_nvgfx_nvmap_mem = NULL;
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}
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if (R_SUCCEEDED(rc)) g_nvgfxInitialized = 1;
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return rc;
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}
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void nvgfxExit(void) {
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if(!g_nvgfxInitialized)return;
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nvClose(g_nvgfx_fd_nvmap);
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nvClose(g_nvgfx_fd_nvhostasgpu);
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nvClose(g_nvgfx_fd_nvhostctrlgpu);
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g_nvgfx_fd_nvmap = 0;
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g_nvgfx_fd_nvhostasgpu = 0;
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g_nvgfx_fd_nvhostctrlgpu = 0;
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if (g_nvgfx_nvmap_mem) {
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free(g_nvgfx_nvmap_mem);
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g_nvgfx_nvmap_mem = NULL;
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}
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g_nvgfxInitialized = 0;
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}
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