diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/core/subdev/bar/base.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/core/subdev/bar/base.c | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/core/subdev/bar/base.c b/drivers/gpu/drm/nouveau/core/subdev/bar/base.c new file mode 100644 index 0000000..d70ba34 --- /dev/null +++ b/drivers/gpu/drm/nouveau/core/subdev/bar/base.c @@ -0,0 +1,135 @@ +/* + * 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/object.h> +#include <subdev/bar.h> + +struct nouveau_barobj { + struct nouveau_object base; + struct nouveau_vma vma; + void __iomem *iomem; +}; + +static int +nouveau_barobj_ctor(struct nouveau_object *parent, + struct nouveau_object *engine, + struct nouveau_oclass *oclass, void *mem, u32 size, + struct nouveau_object **pobject) +{ + struct nouveau_bar *bar = (void *)engine; + struct nouveau_barobj *barobj; + int ret; + + ret = nouveau_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 = bar->iomem + (u32)barobj->vma.offset; + return 0; +} + +static void +nouveau_barobj_dtor(struct nouveau_object *object) +{ + struct nouveau_bar *bar = (void *)object->engine; + struct nouveau_barobj *barobj = (void *)object; + if (barobj->vma.node) + bar->unmap(bar, &barobj->vma); + nouveau_object_destroy(&barobj->base); +} + +static u32 +nouveau_barobj_rd32(struct nouveau_object *object, u64 addr) +{ + struct nouveau_barobj *barobj = (void *)object; + return ioread32_native(barobj->iomem + addr); +} + +static void +nouveau_barobj_wr32(struct nouveau_object *object, u64 addr, u32 data) +{ + struct nouveau_barobj *barobj = (void *)object; + iowrite32_native(data, barobj->iomem + addr); +} + +static struct nouveau_oclass +nouveau_barobj_oclass = { + .ofuncs = &(struct nouveau_ofuncs) { + .ctor = nouveau_barobj_ctor, + .dtor = nouveau_barobj_dtor, + .init = nouveau_object_init, + .fini = nouveau_object_fini, + .rd32 = nouveau_barobj_rd32, + .wr32 = nouveau_barobj_wr32, + }, +}; + +int +nouveau_bar_alloc(struct nouveau_bar *bar, struct nouveau_object *parent, + struct nouveau_mem *mem, struct nouveau_object **pobject) +{ + struct nouveau_object *engine = nv_object(bar); + return nouveau_object_ctor(parent, engine, &nouveau_barobj_oclass, + mem, 0, pobject); +} + +int +nouveau_bar_create_(struct nouveau_object *parent, + struct nouveau_object *engine, + struct nouveau_oclass *oclass, int length, void **pobject) +{ + struct nouveau_device *device = nv_device(parent); + struct nouveau_bar *bar; + int ret; + + ret = nouveau_subdev_create_(parent, engine, oclass, 0, "BARCTL", + "bar", length, pobject); + bar = *pobject; + if (ret) + return ret; + + bar->iomem = ioremap(pci_resource_start(device->pdev, 3), + pci_resource_len(device->pdev, 3)); + return 0; +} + +void +nouveau_bar_destroy(struct nouveau_bar *bar) +{ + if (bar->iomem) + iounmap(bar->iomem); + nouveau_subdev_destroy(&bar->base); +} + +void +_nouveau_bar_dtor(struct nouveau_object *object) +{ + struct nouveau_bar *bar = (void *)object; + nouveau_bar_destroy(bar); +} |