mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-25 01:10:20 +07:00
920d2b5ef2
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
168 lines
4.2 KiB
C
168 lines
4.2 KiB
C
/*
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* Copyright 2017 Red Hat Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include <nvif/vmm.h>
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#include <nvif/mem.h>
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#include <nvif/if000c.h>
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int
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nvif_vmm_unmap(struct nvif_vmm *vmm, u64 addr)
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{
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return nvif_object_mthd(&vmm->object, NVIF_VMM_V0_UNMAP,
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&(struct nvif_vmm_unmap_v0) { .addr = addr },
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sizeof(struct nvif_vmm_unmap_v0));
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}
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int
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nvif_vmm_map(struct nvif_vmm *vmm, u64 addr, u64 size, void *argv, u32 argc,
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struct nvif_mem *mem, u64 offset)
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{
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struct nvif_vmm_map_v0 *args;
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u8 stack[16];
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int ret;
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if (sizeof(*args) + argc > sizeof(stack)) {
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if (!(args = kmalloc(sizeof(*args) + argc, GFP_KERNEL)))
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return -ENOMEM;
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} else {
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args = (void *)stack;
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}
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args->version = 0;
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args->addr = addr;
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args->size = size;
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args->memory = nvif_handle(&mem->object);
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args->offset = offset;
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memcpy(args->data, argv, argc);
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ret = nvif_object_mthd(&vmm->object, NVIF_VMM_V0_MAP,
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args, sizeof(*args) + argc);
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if (args != (void *)stack)
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kfree(args);
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return ret;
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}
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void
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nvif_vmm_put(struct nvif_vmm *vmm, struct nvif_vma *vma)
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{
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if (vma->size) {
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WARN_ON(nvif_object_mthd(&vmm->object, NVIF_VMM_V0_PUT,
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&(struct nvif_vmm_put_v0) {
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.addr = vma->addr,
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}, sizeof(struct nvif_vmm_put_v0)));
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vma->size = 0;
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}
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}
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int
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nvif_vmm_get(struct nvif_vmm *vmm, enum nvif_vmm_get type, bool sparse,
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u8 page, u8 align, u64 size, struct nvif_vma *vma)
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{
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struct nvif_vmm_get_v0 args;
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int ret;
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args.version = vma->size = 0;
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args.sparse = sparse;
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args.page = page;
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args.align = align;
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args.size = size;
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switch (type) {
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case ADDR: args.type = NVIF_VMM_GET_V0_ADDR; break;
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case PTES: args.type = NVIF_VMM_GET_V0_PTES; break;
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case LAZY: args.type = NVIF_VMM_GET_V0_LAZY; break;
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default:
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WARN_ON(1);
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return -EINVAL;
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}
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ret = nvif_object_mthd(&vmm->object, NVIF_VMM_V0_GET,
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&args, sizeof(args));
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if (ret == 0) {
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vma->addr = args.addr;
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vma->size = args.size;
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}
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return ret;
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}
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void
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nvif_vmm_fini(struct nvif_vmm *vmm)
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{
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kfree(vmm->page);
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nvif_object_fini(&vmm->object);
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}
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int
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nvif_vmm_init(struct nvif_mmu *mmu, s32 oclass, u64 addr, u64 size,
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void *argv, u32 argc, struct nvif_vmm *vmm)
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{
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struct nvif_vmm_v0 *args;
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u32 argn = sizeof(*args) + argc;
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int ret = -ENOSYS, i;
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vmm->object.client = NULL;
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vmm->page = NULL;
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if (!(args = kmalloc(argn, GFP_KERNEL)))
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return -ENOMEM;
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args->version = 0;
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args->addr = addr;
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args->size = size;
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memcpy(args->data, argv, argc);
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ret = nvif_object_init(&mmu->object, 0, oclass, args, argn,
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&vmm->object);
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if (ret)
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goto done;
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vmm->start = args->addr;
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vmm->limit = args->size;
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vmm->page_nr = args->page_nr;
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vmm->page = kmalloc(sizeof(*vmm->page) * vmm->page_nr, GFP_KERNEL);
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if (!vmm->page) {
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ret = -ENOMEM;
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goto done;
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}
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for (i = 0; i < vmm->page_nr; i++) {
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struct nvif_vmm_page_v0 args = { .index = i };
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ret = nvif_object_mthd(&vmm->object, NVIF_VMM_V0_PAGE,
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&args, sizeof(args));
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if (ret)
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break;
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vmm->page[i].shift = args.shift;
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vmm->page[i].sparse = args.sparse;
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vmm->page[i].vram = args.vram;
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vmm->page[i].host = args.host;
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vmm->page[i].comp = args.comp;
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}
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done:
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if (ret)
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nvif_vmm_fini(vmm);
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kfree(args);
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return ret;
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}
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