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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/gpu/drm/nouveau/nvkm/core/gpuobj.c | |
parent | Initial commit. (diff) | |
download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip |
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/core/gpuobj.c')
-rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/core/gpuobj.c | 278 |
1 files changed, 278 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/core/gpuobj.c b/drivers/gpu/drm/nouveau/nvkm/core/gpuobj.c new file mode 100644 index 000000000..d6de2b3ed --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvkm/core/gpuobj.c @@ -0,0 +1,278 @@ +/* + * Copyright 2012 Red Hat Inc. + * + * 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) 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. + * + * Authors: Ben Skeggs + */ +#include <core/gpuobj.h> +#include <core/engine.h> + +#include <subdev/instmem.h> +#include <subdev/bar.h> +#include <subdev/mmu.h> + +/* fast-path, where backend is able to provide direct pointer to memory */ +static u32 +nvkm_gpuobj_rd32_fast(struct nvkm_gpuobj *gpuobj, u32 offset) +{ + return ioread32_native(gpuobj->map + offset); +} + +static void +nvkm_gpuobj_wr32_fast(struct nvkm_gpuobj *gpuobj, u32 offset, u32 data) +{ + iowrite32_native(data, gpuobj->map + offset); +} + +/* accessor functions for gpuobjs allocated directly from instmem */ +static int +nvkm_gpuobj_heap_map(struct nvkm_gpuobj *gpuobj, u64 offset, + struct nvkm_vmm *vmm, struct nvkm_vma *vma, + void *argv, u32 argc) +{ + return nvkm_memory_map(gpuobj->memory, offset, vmm, vma, argv, argc); +} + +static u32 +nvkm_gpuobj_heap_rd32(struct nvkm_gpuobj *gpuobj, u32 offset) +{ + return nvkm_ro32(gpuobj->memory, offset); +} + +static void +nvkm_gpuobj_heap_wr32(struct nvkm_gpuobj *gpuobj, u32 offset, u32 data) +{ + nvkm_wo32(gpuobj->memory, offset, data); +} + +static const struct nvkm_gpuobj_func nvkm_gpuobj_heap; +static void +nvkm_gpuobj_heap_release(struct nvkm_gpuobj *gpuobj) +{ + gpuobj->func = &nvkm_gpuobj_heap; + nvkm_done(gpuobj->memory); +} + +static const struct nvkm_gpuobj_func +nvkm_gpuobj_heap_fast = { + .release = nvkm_gpuobj_heap_release, + .rd32 = nvkm_gpuobj_rd32_fast, + .wr32 = nvkm_gpuobj_wr32_fast, + .map = nvkm_gpuobj_heap_map, +}; + +static const struct nvkm_gpuobj_func +nvkm_gpuobj_heap_slow = { + .release = nvkm_gpuobj_heap_release, + .rd32 = nvkm_gpuobj_heap_rd32, + .wr32 = nvkm_gpuobj_heap_wr32, + .map = nvkm_gpuobj_heap_map, +}; + +static void * +nvkm_gpuobj_heap_acquire(struct nvkm_gpuobj *gpuobj) +{ + gpuobj->map = nvkm_kmap(gpuobj->memory); + if (likely(gpuobj->map)) + gpuobj->func = &nvkm_gpuobj_heap_fast; + else + gpuobj->func = &nvkm_gpuobj_heap_slow; + return gpuobj->map; +} + +static const struct nvkm_gpuobj_func +nvkm_gpuobj_heap = { + .acquire = nvkm_gpuobj_heap_acquire, + .map = nvkm_gpuobj_heap_map, +}; + +/* accessor functions for gpuobjs sub-allocated from a parent gpuobj */ +static int +nvkm_gpuobj_map(struct nvkm_gpuobj *gpuobj, u64 offset, + struct nvkm_vmm *vmm, struct nvkm_vma *vma, + void *argv, u32 argc) +{ + return nvkm_memory_map(gpuobj->parent, gpuobj->node->offset + offset, + vmm, vma, argv, argc); +} + +static u32 +nvkm_gpuobj_rd32(struct nvkm_gpuobj *gpuobj, u32 offset) +{ + return nvkm_ro32(gpuobj->parent, gpuobj->node->offset + offset); +} + +static void +nvkm_gpuobj_wr32(struct nvkm_gpuobj *gpuobj, u32 offset, u32 data) +{ + nvkm_wo32(gpuobj->parent, gpuobj->node->offset + offset, data); +} + +static const struct nvkm_gpuobj_func nvkm_gpuobj_func; +static void +nvkm_gpuobj_release(struct nvkm_gpuobj *gpuobj) +{ + gpuobj->func = &nvkm_gpuobj_func; + nvkm_done(gpuobj->parent); +} + +static const struct nvkm_gpuobj_func +nvkm_gpuobj_fast = { + .release = nvkm_gpuobj_release, + .rd32 = nvkm_gpuobj_rd32_fast, + .wr32 = nvkm_gpuobj_wr32_fast, + .map = nvkm_gpuobj_map, +}; + +static const struct nvkm_gpuobj_func +nvkm_gpuobj_slow = { + .release = nvkm_gpuobj_release, + .rd32 = nvkm_gpuobj_rd32, + .wr32 = nvkm_gpuobj_wr32, + .map = nvkm_gpuobj_map, +}; + +static void * +nvkm_gpuobj_acquire(struct nvkm_gpuobj *gpuobj) +{ + gpuobj->map = nvkm_kmap(gpuobj->parent); + if (likely(gpuobj->map)) { + gpuobj->map = (u8 *)gpuobj->map + gpuobj->node->offset; + gpuobj->func = &nvkm_gpuobj_fast; + } else { + gpuobj->func = &nvkm_gpuobj_slow; + } + return gpuobj->map; +} + +static const struct nvkm_gpuobj_func +nvkm_gpuobj_func = { + .acquire = nvkm_gpuobj_acquire, + .map = nvkm_gpuobj_map, +}; + +static int +nvkm_gpuobj_ctor(struct nvkm_device *device, u32 size, int align, bool zero, + struct nvkm_gpuobj *parent, struct nvkm_gpuobj *gpuobj) +{ + u32 offset; + int ret; + + if (parent) { + if (align >= 0) { + ret = nvkm_mm_head(&parent->heap, 0, 1, size, size, + max(align, 1), &gpuobj->node); + } else { + ret = nvkm_mm_tail(&parent->heap, 0, 1, size, size, + -align, &gpuobj->node); + } + if (ret) + return ret; + + gpuobj->parent = parent; + gpuobj->func = &nvkm_gpuobj_func; + gpuobj->addr = parent->addr + gpuobj->node->offset; + gpuobj->size = gpuobj->node->length; + + if (zero) { + nvkm_kmap(gpuobj); + for (offset = 0; offset < gpuobj->size; offset += 4) + nvkm_wo32(gpuobj, offset, 0x00000000); + nvkm_done(gpuobj); + } + } else { + ret = nvkm_memory_new(device, NVKM_MEM_TARGET_INST, size, + abs(align), zero, &gpuobj->memory); + if (ret) + return ret; + + gpuobj->func = &nvkm_gpuobj_heap; + gpuobj->addr = nvkm_memory_addr(gpuobj->memory); + gpuobj->size = nvkm_memory_size(gpuobj->memory); + } + + return nvkm_mm_init(&gpuobj->heap, 0, 0, gpuobj->size, 1); +} + +void +nvkm_gpuobj_del(struct nvkm_gpuobj **pgpuobj) +{ + struct nvkm_gpuobj *gpuobj = *pgpuobj; + if (gpuobj) { + if (gpuobj->parent) + nvkm_mm_free(&gpuobj->parent->heap, &gpuobj->node); + nvkm_mm_fini(&gpuobj->heap); + nvkm_memory_unref(&gpuobj->memory); + kfree(*pgpuobj); + *pgpuobj = NULL; + } +} + +int +nvkm_gpuobj_new(struct nvkm_device *device, u32 size, int align, bool zero, + struct nvkm_gpuobj *parent, struct nvkm_gpuobj **pgpuobj) +{ + struct nvkm_gpuobj *gpuobj; + int ret; + + if (!(gpuobj = *pgpuobj = kzalloc(sizeof(*gpuobj), GFP_KERNEL))) + return -ENOMEM; + + ret = nvkm_gpuobj_ctor(device, size, align, zero, parent, gpuobj); + if (ret) + nvkm_gpuobj_del(pgpuobj); + return ret; +} + +/* the below is basically only here to support sharing the paged dma object + * for PCI(E)GART on <=nv4x chipsets, and should *not* be expected to work + * anywhere else. + */ + +int +nvkm_gpuobj_wrap(struct nvkm_memory *memory, struct nvkm_gpuobj **pgpuobj) +{ + if (!(*pgpuobj = kzalloc(sizeof(**pgpuobj), GFP_KERNEL))) + return -ENOMEM; + + (*pgpuobj)->addr = nvkm_memory_addr(memory); + (*pgpuobj)->size = nvkm_memory_size(memory); + return 0; +} + +void +nvkm_gpuobj_memcpy_to(struct nvkm_gpuobj *dst, u32 dstoffset, void *src, + u32 length) +{ + int i; + + for (i = 0; i < length; i += 4) + nvkm_wo32(dst, dstoffset + i, *(u32 *)(src + i)); +} + +void +nvkm_gpuobj_memcpy_from(void *dst, struct nvkm_gpuobj *src, u32 srcoffset, + u32 length) +{ + int i; + + for (i = 0; i < length; i += 4) + ((u32 *)src)[i / 4] = nvkm_ro32(src, srcoffset + i); +} |