From: Alexandre Courbot Date: Fri, 2 May 2014 09:32:37 +0000 (+0900) Subject: drm/nouveau/fb: add GK20A support X-Git-Tag: v3.16-rc1~35^2~2^2~21 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=fef94f6272c6d1ce1c9177770f50f7281d61f5f6;p=platform%2Fkernel%2Flinux-exynos.git drm/nouveau/fb: add GK20A support Add a simple FB device for GK20A, as well as a RAM implementation suitable for chips that use system memory as video RAM. Signed-off-by: Alexandre Courbot Signed-off-by: Ben Skeggs --- diff --git a/drivers/gpu/drm/nouveau/Makefile b/drivers/gpu/drm/nouveau/Makefile index bc5fb24..34fef246 100644 --- a/drivers/gpu/drm/nouveau/Makefile +++ b/drivers/gpu/drm/nouveau/Makefile @@ -102,6 +102,7 @@ nouveau-y += core/subdev/fb/nvaa.o nouveau-y += core/subdev/fb/nvaf.o nouveau-y += core/subdev/fb/nvc0.o nouveau-y += core/subdev/fb/nve0.o +nouveau-y += core/subdev/fb/gk20a.o nouveau-y += core/subdev/fb/gm107.o nouveau-y += core/subdev/fb/ramnv04.o nouveau-y += core/subdev/fb/ramnv10.o @@ -117,6 +118,7 @@ nouveau-y += core/subdev/fb/ramnva3.o nouveau-y += core/subdev/fb/ramnvaa.o nouveau-y += core/subdev/fb/ramnvc0.o nouveau-y += core/subdev/fb/ramnve0.o +nouveau-y += core/subdev/fb/ramgk20a.o nouveau-y += core/subdev/fb/ramgm107.o nouveau-y += core/subdev/fb/sddr3.o nouveau-y += core/subdev/fb/gddr5.o diff --git a/drivers/gpu/drm/nouveau/core/include/subdev/fb.h b/drivers/gpu/drm/nouveau/core/include/subdev/fb.h index 58c7ccd..871e739 100644 --- a/drivers/gpu/drm/nouveau/core/include/subdev/fb.h +++ b/drivers/gpu/drm/nouveau/core/include/subdev/fb.h @@ -105,6 +105,7 @@ extern struct nouveau_oclass *nvaa_fb_oclass; extern struct nouveau_oclass *nvaf_fb_oclass; extern struct nouveau_oclass *nvc0_fb_oclass; extern struct nouveau_oclass *nve0_fb_oclass; +extern struct nouveau_oclass *gk20a_fb_oclass; extern struct nouveau_oclass *gm107_fb_oclass; #include diff --git a/drivers/gpu/drm/nouveau/core/subdev/fb/gk20a.c b/drivers/gpu/drm/nouveau/core/subdev/fb/gk20a.c new file mode 100644 index 0000000..a16024a --- /dev/null +++ b/drivers/gpu/drm/nouveau/core/subdev/fb/gk20a.c @@ -0,0 +1,56 @@ +/* + * Copyright (c) 2014, NVIDIA CORPORATION. All rights reserved. + * + * 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 AUTHORS OR COPYRIGHT HOLDERS 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. + */ + +#include "nvc0.h" + +struct gk20a_fb_priv { + struct nouveau_fb base; +}; + +static int +gk20a_fb_ctor(struct nouveau_object *parent, struct nouveau_object *engine, + struct nouveau_oclass *oclass, void *data, u32 size, + struct nouveau_object **pobject) +{ + struct gk20a_fb_priv *priv; + int ret; + + ret = nouveau_fb_create(parent, engine, oclass, &priv); + *pobject = nv_object(priv); + if (ret) + return ret; + + return 0; +} + +struct nouveau_oclass * +gk20a_fb_oclass = &(struct nouveau_fb_impl) { + .base.handle = NV_SUBDEV(FB, 0xea), + .base.ofuncs = &(struct nouveau_ofuncs) { + .ctor = gk20a_fb_ctor, + .dtor = _nouveau_fb_dtor, + .init = _nouveau_fb_init, + .fini = _nouveau_fb_fini, + }, + .memtype = nvc0_fb_memtype_valid, + .ram = &gk20a_ram_oclass, +}.base; diff --git a/drivers/gpu/drm/nouveau/core/subdev/fb/priv.h b/drivers/gpu/drm/nouveau/core/subdev/fb/priv.h index da74c88..82273f8 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/fb/priv.h +++ b/drivers/gpu/drm/nouveau/core/subdev/fb/priv.h @@ -32,6 +32,7 @@ extern struct nouveau_oclass nva3_ram_oclass; extern struct nouveau_oclass nvaa_ram_oclass; extern struct nouveau_oclass nvc0_ram_oclass; extern struct nouveau_oclass nve0_ram_oclass; +extern struct nouveau_oclass gk20a_ram_oclass; extern struct nouveau_oclass gm107_ram_oclass; int nouveau_sddr3_calc(struct nouveau_ram *ram); diff --git a/drivers/gpu/drm/nouveau/core/subdev/fb/ramgk20a.c b/drivers/gpu/drm/nouveau/core/subdev/fb/ramgk20a.c new file mode 100644 index 0000000..4d77d75 --- /dev/null +++ b/drivers/gpu/drm/nouveau/core/subdev/fb/ramgk20a.c @@ -0,0 +1,152 @@ +/* + * Copyright (c) 2014, NVIDIA CORPORATION. All rights reserved. + * + * 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 AUTHORS OR COPYRIGHT HOLDERS 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. + */ + +#include "priv.h" + +#include + +struct gk20a_mem { + struct nouveau_mem base; + void *cpuaddr; + dma_addr_t handle; +}; +#define to_gk20a_mem(m) container_of(m, struct gk20a_mem, base) + +static void +gk20a_ram_put(struct nouveau_fb *pfb, struct nouveau_mem **pmem) +{ + struct device *dev = nv_device_base(nv_device(pfb)); + struct gk20a_mem *mem = to_gk20a_mem(*pmem); + + *pmem = NULL; + if (unlikely(mem == NULL)) + return; + + if (likely(mem->cpuaddr)) + dma_free_coherent(dev, mem->base.size << PAGE_SHIFT, + mem->cpuaddr, mem->handle); + + kfree(mem->base.pages); + kfree(mem); +} + +static int +gk20a_ram_get(struct nouveau_fb *pfb, u64 size, u32 align, u32 ncmin, + u32 memtype, struct nouveau_mem **pmem) +{ + struct device *dev = nv_device_base(nv_device(pfb)); + struct gk20a_mem *mem; + u32 type = memtype & 0xff; + u32 npages, order; + int i; + + nv_debug(pfb, "%s: size: %llx align: %x, ncmin: %x\n", __func__, size, + align, ncmin); + + npages = size >> PAGE_SHIFT; + if (npages == 0) + npages = 1; + + if (align == 0) + align = PAGE_SIZE; + align >>= PAGE_SHIFT; + + /* round alignment to the next power of 2, if needed */ + order = fls(align); + if ((align & (align - 1)) == 0) + order--; + align = BIT(order); + + /* ensure returned address is correctly aligned */ + npages = max(align, npages); + + mem = kzalloc(sizeof(*mem), GFP_KERNEL); + if (!mem) + return -ENOMEM; + + mem->base.size = npages; + mem->base.memtype = type; + + mem->base.pages = kzalloc(sizeof(dma_addr_t) * npages, GFP_KERNEL); + if (!mem->base.pages) { + kfree(mem); + return -ENOMEM; + } + + *pmem = &mem->base; + + mem->cpuaddr = dma_alloc_coherent(dev, npages << PAGE_SHIFT, + &mem->handle, GFP_KERNEL); + if (!mem->cpuaddr) { + nv_error(pfb, "%s: cannot allocate memory!\n", __func__); + gk20a_ram_put(pfb, pmem); + return -ENOMEM; + } + + align <<= PAGE_SHIFT; + + /* alignment check */ + if (unlikely(mem->handle & (align - 1))) + nv_warn(pfb, "memory not aligned as requested: %pad (0x%x)\n", + &mem->handle, align); + + nv_debug(pfb, "alloc size: 0x%x, align: 0x%x, paddr: %pad, vaddr: %p\n", + npages << PAGE_SHIFT, align, &mem->handle, mem->cpuaddr); + + for (i = 0; i < npages; i++) + mem->base.pages[i] = mem->handle + (PAGE_SIZE * i); + + mem->base.offset = (u64)mem->base.pages[0]; + + return 0; +} + +static int +gk20a_ram_ctor(struct nouveau_object *parent, struct nouveau_object *engine, + struct nouveau_oclass *oclass, void *data, u32 datasize, + struct nouveau_object **pobject) +{ + struct nouveau_ram *ram; + int ret; + + ret = nouveau_ram_create(parent, engine, oclass, &ram); + *pobject = nv_object(ram); + if (ret) + return ret; + ram->type = NV_MEM_TYPE_STOLEN; + ram->size = get_num_physpages() << PAGE_SHIFT; + + ram->get = gk20a_ram_get; + ram->put = gk20a_ram_put; + + return 0; +} + +struct nouveau_oclass +gk20a_ram_oclass = { + .ofuncs = &(struct nouveau_ofuncs) { + .ctor = gk20a_ram_ctor, + .dtor = _nouveau_ram_dtor, + .init = _nouveau_ram_init, + .fini = _nouveau_ram_fini, + }, +};