diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/fb/ram.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/subdev/fb/ram.c | 219 |
1 files changed, 219 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/fb/ram.c b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/ram.c new file mode 100644 index 000000000..03b1bdb27 --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/ram.c @@ -0,0 +1,219 @@ +/* + * Copyright 2015 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 <bskeggs@redhat.com> + */ +#define nvkm_vram(p) container_of((p), struct nvkm_vram, memory) +#include "ram.h" + +#include <core/memory.h> +#include <subdev/mmu.h> + +struct nvkm_vram { + struct nvkm_memory memory; + struct nvkm_ram *ram; + u8 page; + struct nvkm_mm_node *mn; +}; + +static int +nvkm_vram_map(struct nvkm_memory *memory, u64 offset, struct nvkm_vmm *vmm, + struct nvkm_vma *vma, void *argv, u32 argc) +{ + struct nvkm_vram *vram = nvkm_vram(memory); + struct nvkm_vmm_map map = { + .memory = &vram->memory, + .offset = offset, + .mem = vram->mn, + }; + + return nvkm_vmm_map(vmm, vma, argv, argc, &map); +} + +static u64 +nvkm_vram_size(struct nvkm_memory *memory) +{ + return (u64)nvkm_mm_size(nvkm_vram(memory)->mn) << NVKM_RAM_MM_SHIFT; +} + +static u64 +nvkm_vram_addr(struct nvkm_memory *memory) +{ + struct nvkm_vram *vram = nvkm_vram(memory); + if (!nvkm_mm_contiguous(vram->mn)) + return ~0ULL; + return (u64)nvkm_mm_addr(vram->mn) << NVKM_RAM_MM_SHIFT; +} + +static u8 +nvkm_vram_page(struct nvkm_memory *memory) +{ + return nvkm_vram(memory)->page; +} + +static enum nvkm_memory_target +nvkm_vram_target(struct nvkm_memory *memory) +{ + return NVKM_MEM_TARGET_VRAM; +} + +static void * +nvkm_vram_dtor(struct nvkm_memory *memory) +{ + struct nvkm_vram *vram = nvkm_vram(memory); + struct nvkm_mm_node *next = vram->mn; + struct nvkm_mm_node *node; + mutex_lock(&vram->ram->mutex); + while ((node = next)) { + next = node->next; + nvkm_mm_free(&vram->ram->vram, &node); + } + mutex_unlock(&vram->ram->mutex); + return vram; +} + +static const struct nvkm_memory_func +nvkm_vram = { + .dtor = nvkm_vram_dtor, + .target = nvkm_vram_target, + .page = nvkm_vram_page, + .addr = nvkm_vram_addr, + .size = nvkm_vram_size, + .map = nvkm_vram_map, +}; + +int +nvkm_ram_get(struct nvkm_device *device, u8 heap, u8 type, u8 rpage, u64 size, + bool contig, bool back, struct nvkm_memory **pmemory) +{ + struct nvkm_ram *ram; + struct nvkm_mm *mm; + struct nvkm_mm_node **node, *r; + struct nvkm_vram *vram; + u8 page = max(rpage, (u8)NVKM_RAM_MM_SHIFT); + u32 align = (1 << page) >> NVKM_RAM_MM_SHIFT; + u32 max = ALIGN(size, 1 << page) >> NVKM_RAM_MM_SHIFT; + u32 min = contig ? max : align; + int ret; + + if (!device->fb || !(ram = device->fb->ram)) + return -ENODEV; + ram = device->fb->ram; + mm = &ram->vram; + + if (!(vram = kzalloc(sizeof(*vram), GFP_KERNEL))) + return -ENOMEM; + nvkm_memory_ctor(&nvkm_vram, &vram->memory); + vram->ram = ram; + vram->page = page; + *pmemory = &vram->memory; + + mutex_lock(&ram->mutex); + node = &vram->mn; + do { + if (back) + ret = nvkm_mm_tail(mm, heap, type, max, min, align, &r); + else + ret = nvkm_mm_head(mm, heap, type, max, min, align, &r); + if (ret) { + mutex_unlock(&ram->mutex); + nvkm_memory_unref(pmemory); + return ret; + } + + *node = r; + node = &r->next; + max -= r->length; + } while (max); + mutex_unlock(&ram->mutex); + return 0; +} + +int +nvkm_ram_init(struct nvkm_ram *ram) +{ + if (ram->func->init) + return ram->func->init(ram); + return 0; +} + +void +nvkm_ram_del(struct nvkm_ram **pram) +{ + struct nvkm_ram *ram = *pram; + if (ram && !WARN_ON(!ram->func)) { + if (ram->func->dtor) + *pram = ram->func->dtor(ram); + nvkm_mm_fini(&ram->vram); + mutex_destroy(&ram->mutex); + kfree(*pram); + *pram = NULL; + } +} + +int +nvkm_ram_ctor(const struct nvkm_ram_func *func, struct nvkm_fb *fb, + enum nvkm_ram_type type, u64 size, struct nvkm_ram *ram) +{ + static const char *name[] = { + [NVKM_RAM_TYPE_UNKNOWN] = "of unknown memory type", + [NVKM_RAM_TYPE_STOLEN ] = "stolen system memory", + [NVKM_RAM_TYPE_SGRAM ] = "SGRAM", + [NVKM_RAM_TYPE_SDRAM ] = "SDRAM", + [NVKM_RAM_TYPE_DDR1 ] = "DDR1", + [NVKM_RAM_TYPE_DDR2 ] = "DDR2", + [NVKM_RAM_TYPE_DDR3 ] = "DDR3", + [NVKM_RAM_TYPE_GDDR2 ] = "GDDR2", + [NVKM_RAM_TYPE_GDDR3 ] = "GDDR3", + [NVKM_RAM_TYPE_GDDR4 ] = "GDDR4", + [NVKM_RAM_TYPE_GDDR5 ] = "GDDR5", + [NVKM_RAM_TYPE_GDDR5X ] = "GDDR5X", + [NVKM_RAM_TYPE_GDDR6 ] = "GDDR6", + [NVKM_RAM_TYPE_HBM2 ] = "HBM2", + }; + struct nvkm_subdev *subdev = &fb->subdev; + int ret; + + nvkm_info(subdev, "%d MiB %s\n", (int)(size >> 20), name[type]); + ram->func = func; + ram->fb = fb; + ram->type = type; + ram->size = size; + mutex_init(&ram->mutex); + + if (!nvkm_mm_initialised(&ram->vram)) { + ret = nvkm_mm_init(&ram->vram, NVKM_RAM_MM_NORMAL, 0, + size >> NVKM_RAM_MM_SHIFT, 1); + if (ret) + return ret; + } + + return 0; +} + +int +nvkm_ram_new_(const struct nvkm_ram_func *func, struct nvkm_fb *fb, + enum nvkm_ram_type type, u64 size, struct nvkm_ram **pram) +{ + if (!(*pram = kzalloc(sizeof(**pram), GFP_KERNEL))) + return -ENOMEM; + return nvkm_ram_ctor(func, fb, type, size, *pram); +} |