From 57f0f512b273f60d52568b8c6b77e17f5636edc0 Mon Sep 17 00:00:00 2001 From: André Fabian Silva Delgado Date: Wed, 5 Aug 2015 17:04:01 -0300 Subject: Initial import --- drivers/gpu/drm/nouveau/nvkm/subdev/bar/base.c | 144 +++++++++++++++++++++++++ 1 file changed, 144 insertions(+) create mode 100644 drivers/gpu/drm/nouveau/nvkm/subdev/bar/base.c (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/bar/base.c') diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/bar/base.c b/drivers/gpu/drm/nouveau/nvkm/subdev/bar/base.c new file mode 100644 index 000000000..3502d0012 --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/bar/base.c @@ -0,0 +1,144 @@ +/* + * 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 "priv.h" + +#include +#include +#include + +struct nvkm_barobj { + struct nvkm_object base; + struct nvkm_vma vma; + void __iomem *iomem; +}; + +static int +nvkm_barobj_ctor(struct nvkm_object *parent, struct nvkm_object *engine, + struct nvkm_oclass *oclass, void *data, u32 size, + struct nvkm_object **pobject) +{ + struct nvkm_device *device = nv_device(parent); + struct nvkm_bar *bar = nvkm_bar(device); + struct nvkm_mem *mem = data; + struct nvkm_barobj *barobj; + int ret; + + ret = nvkm_object_create(parent, engine, oclass, 0, &barobj); + *pobject = nv_object(barobj); + if (ret) + return ret; + + ret = bar->kmap(bar, mem, NV_MEM_ACCESS_RW, &barobj->vma); + if (ret) + return ret; + + barobj->iomem = ioremap(nv_device_resource_start(device, 3) + + (u32)barobj->vma.offset, mem->size << 12); + if (!barobj->iomem) { + nv_warn(bar, "PRAMIN ioremap failed\n"); + return -ENOMEM; + } + + return 0; +} + +static void +nvkm_barobj_dtor(struct nvkm_object *object) +{ + struct nvkm_bar *bar = nvkm_bar(object); + struct nvkm_barobj *barobj = (void *)object; + if (barobj->vma.node) { + if (barobj->iomem) + iounmap(barobj->iomem); + bar->unmap(bar, &barobj->vma); + } + nvkm_object_destroy(&barobj->base); +} + +static u32 +nvkm_barobj_rd32(struct nvkm_object *object, u64 addr) +{ + struct nvkm_barobj *barobj = (void *)object; + return ioread32_native(barobj->iomem + addr); +} + +static void +nvkm_barobj_wr32(struct nvkm_object *object, u64 addr, u32 data) +{ + struct nvkm_barobj *barobj = (void *)object; + iowrite32_native(data, barobj->iomem + addr); +} + +static struct nvkm_oclass +nvkm_barobj_oclass = { + .ofuncs = &(struct nvkm_ofuncs) { + .ctor = nvkm_barobj_ctor, + .dtor = nvkm_barobj_dtor, + .init = nvkm_object_init, + .fini = nvkm_object_fini, + .rd32 = nvkm_barobj_rd32, + .wr32 = nvkm_barobj_wr32, + }, +}; + +int +nvkm_bar_alloc(struct nvkm_bar *bar, struct nvkm_object *parent, + struct nvkm_mem *mem, struct nvkm_object **pobject) +{ + struct nvkm_object *gpuobj; + int ret = nvkm_object_ctor(parent, &parent->engine->subdev.object, + &nvkm_barobj_oclass, mem, 0, &gpuobj); + if (ret == 0) + *pobject = gpuobj; + return ret; +} + +int +nvkm_bar_create_(struct nvkm_object *parent, struct nvkm_object *engine, + struct nvkm_oclass *oclass, int length, void **pobject) +{ + struct nvkm_bar *bar; + int ret; + + ret = nvkm_subdev_create_(parent, engine, oclass, 0, "BARCTL", + "bar", length, pobject); + bar = *pobject; + if (ret) + return ret; + + return 0; +} + +void +nvkm_bar_destroy(struct nvkm_bar *bar) +{ + nvkm_subdev_destroy(&bar->base); +} + +void +_nvkm_bar_dtor(struct nvkm_object *object) +{ + struct nvkm_bar *bar = (void *)object; + nvkm_bar_destroy(bar); +} -- cgit v1.2.3-54-g00ecf