--- /dev/null
+/*
+ * 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>
+
+void
+nvkm_gpuobj_destroy(struct nvkm_gpuobj *gpuobj)
+{
+ int i;
+
+ if (gpuobj->flags & NVOBJ_FLAG_ZERO_FREE) {
+ for (i = 0; i < gpuobj->size; i += 4)
+ nv_wo32(gpuobj, i, 0x00000000);
+ }
+
+ if (gpuobj->node)
+ nvkm_mm_free(&nv_gpuobj(gpuobj->parent)->heap, &gpuobj->node);
+
+ if (gpuobj->heap.block_size)
+ nvkm_mm_fini(&gpuobj->heap);
+
+ nvkm_object_destroy(&gpuobj->object);
+}
+
+int
+nvkm_gpuobj_create_(struct nvkm_object *parent, struct nvkm_object *engine,
+ struct nvkm_oclass *oclass, u32 pclass,
+ struct nvkm_object *pargpu, u32 size, u32 align, u32 flags,
+ int length, void **pobject)
+{
+ struct nvkm_instmem *imem = nvkm_instmem(parent);
+ struct nvkm_bar *bar = nvkm_bar(parent);
+ struct nvkm_gpuobj *gpuobj;
+ struct nvkm_mm *heap = NULL;
+ int ret, i;
+ u64 addr;
+
+ *pobject = NULL;
+
+ if (pargpu) {
+ while ((pargpu = nv_pclass(pargpu, NV_GPUOBJ_CLASS))) {
+ if (nv_gpuobj(pargpu)->heap.block_size)
+ break;
+ pargpu = pargpu->parent;
+ }
+
+ if (unlikely(pargpu == NULL)) {
+ nv_error(parent, "no gpuobj heap\n");
+ return -EINVAL;
+ }
+
+ addr = nv_gpuobj(pargpu)->addr;
+ heap = &nv_gpuobj(pargpu)->heap;
+ atomic_inc(&parent->refcount);
+ } else {
+ ret = imem->alloc(imem, parent, size, align, &parent);
+ pargpu = parent;
+ if (ret)
+ return ret;
+
+ addr = nv_memobj(pargpu)->addr;
+ size = nv_memobj(pargpu)->size;
+
+ if (bar && bar->alloc) {
+ struct nvkm_instobj *iobj = (void *)parent;
+ struct nvkm_mem **mem = (void *)(iobj + 1);
+ struct nvkm_mem *node = *mem;
+ if (!bar->alloc(bar, parent, node, &pargpu)) {
+ nvkm_object_ref(NULL, &parent);
+ parent = pargpu;
+ }
+ }
+ }
+
+ ret = nvkm_object_create_(parent, engine, oclass, pclass |
+ NV_GPUOBJ_CLASS, length, pobject);
+ nvkm_object_ref(NULL, &parent);
+ gpuobj = *pobject;
+ if (ret)
+ return ret;
+
+ gpuobj->parent = pargpu;
+ gpuobj->flags = flags;
+ gpuobj->addr = addr;
+ gpuobj->size = size;
+
+ if (heap) {
+ ret = nvkm_mm_head(heap, 0, 1, size, size, max(align, (u32)1),
+ &gpuobj->node);
+ if (ret)
+ return ret;
+
+ gpuobj->addr += gpuobj->node->offset;
+ }
+
+ if (gpuobj->flags & NVOBJ_FLAG_HEAP) {
+ ret = nvkm_mm_init(&gpuobj->heap, 0, gpuobj->size, 1);
+ if (ret)
+ return ret;
+ }
+
+ if (flags & NVOBJ_FLAG_ZERO_ALLOC) {
+ for (i = 0; i < gpuobj->size; i += 4)
+ nv_wo32(gpuobj, i, 0x00000000);
+ }
+
+ return ret;
+}
+
+struct nvkm_gpuobj_class {
+ struct nvkm_object *pargpu;
+ u64 size;
+ u32 align;
+ u32 flags;
+};
+
+static int
+_nvkm_gpuobj_ctor(struct nvkm_object *parent, struct nvkm_object *engine,
+ struct nvkm_oclass *oclass, void *data, u32 size,
+ struct nvkm_object **pobject)
+{
+ struct nvkm_gpuobj_class *args = data;
+ struct nvkm_gpuobj *object;
+ int ret;
+
+ ret = nvkm_gpuobj_create(parent, engine, oclass, 0, args->pargpu,
+ args->size, args->align, args->flags,
+ &object);
+ *pobject = nv_object(object);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+void
+_nvkm_gpuobj_dtor(struct nvkm_object *object)
+{
+ nvkm_gpuobj_destroy(nv_gpuobj(object));
+}
+
+int
+_nvkm_gpuobj_init(struct nvkm_object *object)
+{
+ return nvkm_gpuobj_init(nv_gpuobj(object));
+}
+
+int
+_nvkm_gpuobj_fini(struct nvkm_object *object, bool suspend)
+{
+ return nvkm_gpuobj_fini(nv_gpuobj(object), suspend);
+}
+
+u32
+_nvkm_gpuobj_rd32(struct nvkm_object *object, u64 addr)
+{
+ struct nvkm_gpuobj *gpuobj = nv_gpuobj(object);
+ struct nvkm_ofuncs *pfuncs = nv_ofuncs(gpuobj->parent);
+ if (gpuobj->node)
+ addr += gpuobj->node->offset;
+ return pfuncs->rd32(gpuobj->parent, addr);
+}
+
+void
+_nvkm_gpuobj_wr32(struct nvkm_object *object, u64 addr, u32 data)
+{
+ struct nvkm_gpuobj *gpuobj = nv_gpuobj(object);
+ struct nvkm_ofuncs *pfuncs = nv_ofuncs(gpuobj->parent);
+ if (gpuobj->node)
+ addr += gpuobj->node->offset;
+ pfuncs->wr32(gpuobj->parent, addr, data);
+}
+
+static struct nvkm_oclass
+_nvkm_gpuobj_oclass = {
+ .handle = 0x00000000,
+ .ofuncs = &(struct nvkm_ofuncs) {
+ .ctor = _nvkm_gpuobj_ctor,
+ .dtor = _nvkm_gpuobj_dtor,
+ .init = _nvkm_gpuobj_init,
+ .fini = _nvkm_gpuobj_fini,
+ .rd32 = _nvkm_gpuobj_rd32,
+ .wr32 = _nvkm_gpuobj_wr32,
+ },
+};
+
+int
+nvkm_gpuobj_new(struct nvkm_object *parent, struct nvkm_object *pargpu,
+ u32 size, u32 align, u32 flags,
+ struct nvkm_gpuobj **pgpuobj)
+{
+ struct nvkm_object *engine = parent;
+ struct nvkm_gpuobj_class args = {
+ .pargpu = pargpu,
+ .size = size,
+ .align = align,
+ .flags = flags,
+ };
+
+ if (!nv_iclass(engine, NV_SUBDEV_CLASS))
+ engine = &engine->engine->subdev.object;
+ BUG_ON(engine == NULL);
+
+ return nvkm_object_ctor(parent, engine, &_nvkm_gpuobj_oclass,
+ &args, sizeof(args),
+ (struct nvkm_object **)pgpuobj);
+}
+
+int
+nvkm_gpuobj_map(struct nvkm_gpuobj *gpuobj, u32 access, struct nvkm_vma *vma)
+{
+ struct nvkm_bar *bar = nvkm_bar(gpuobj);
+ int ret = -EINVAL;
+
+ if (bar && bar->umap) {
+ struct nvkm_instobj *iobj = (void *)
+ nv_pclass(nv_object(gpuobj), NV_MEMOBJ_CLASS);
+ struct nvkm_mem **mem = (void *)(iobj + 1);
+ ret = bar->umap(bar, *mem, access, vma);
+ }
+
+ return ret;
+}
+
+int
+nvkm_gpuobj_map_vm(struct nvkm_gpuobj *gpuobj, struct nvkm_vm *vm,
+ u32 access, struct nvkm_vma *vma)
+{
+ struct nvkm_instobj *iobj = (void *)
+ nv_pclass(nv_object(gpuobj), NV_MEMOBJ_CLASS);
+ struct nvkm_mem **mem = (void *)(iobj + 1);
+ int ret;
+
+ ret = nvkm_vm_get(vm, gpuobj->size, 12, access, vma);
+ if (ret)
+ return ret;
+
+ nvkm_vm_map(vma, *mem);
+ return 0;
+}
+
+void
+nvkm_gpuobj_unmap(struct nvkm_vma *vma)
+{
+ if (vma->node) {
+ nvkm_vm_unmap(vma);
+ nvkm_vm_put(vma);
+ }
+}
+
+/* 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.
+ */
+
+static void
+nvkm_gpudup_dtor(struct nvkm_object *object)
+{
+ struct nvkm_gpuobj *gpuobj = (void *)object;
+ nvkm_object_ref(NULL, &gpuobj->parent);
+ nvkm_object_destroy(&gpuobj->object);
+}
+
+static struct nvkm_oclass
+nvkm_gpudup_oclass = {
+ .handle = NV_GPUOBJ_CLASS,
+ .ofuncs = &(struct nvkm_ofuncs) {
+ .dtor = nvkm_gpudup_dtor,
+ .init = nvkm_object_init,
+ .fini = nvkm_object_fini,
+ },
+};
+
+int
+nvkm_gpuobj_dup(struct nvkm_object *parent, struct nvkm_gpuobj *base,
+ struct nvkm_gpuobj **pgpuobj)
+{
+ struct nvkm_gpuobj *gpuobj;
+ int ret;
+
+ ret = nvkm_object_create(parent, &parent->engine->subdev.object,
+ &nvkm_gpudup_oclass, 0, &gpuobj);
+ *pgpuobj = gpuobj;
+ if (ret)
+ return ret;
+
+ nvkm_object_ref(nv_object(base), &gpuobj->parent);
+ gpuobj->addr = base->addr;
+ gpuobj->size = base->size;
+ return 0;
+}
Code Review / kvmfornfv.git / blobdiff