| /* |
| * 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 <subdev/bar.h> |
| |
| /****************************************************************************** |
| * instmem object base implementation |
| *****************************************************************************/ |
| static void |
| nvkm_instobj_load(struct nvkm_instobj *iobj) |
| { |
| struct nvkm_memory *memory = &iobj->memory; |
| const u64 size = nvkm_memory_size(memory); |
| void __iomem *map; |
| int i; |
| |
| if (!(map = nvkm_kmap(memory))) { |
| for (i = 0; i < size; i += 4) |
| nvkm_wo32(memory, i, iobj->suspend[i / 4]); |
| } else { |
| memcpy_toio(map, iobj->suspend, size); |
| } |
| nvkm_done(memory); |
| |
| kvfree(iobj->suspend); |
| iobj->suspend = NULL; |
| } |
| |
| static int |
| nvkm_instobj_save(struct nvkm_instobj *iobj) |
| { |
| struct nvkm_memory *memory = &iobj->memory; |
| const u64 size = nvkm_memory_size(memory); |
| void __iomem *map; |
| int i; |
| |
| iobj->suspend = kvmalloc(size, GFP_KERNEL); |
| if (!iobj->suspend) |
| return -ENOMEM; |
| |
| if (!(map = nvkm_kmap(memory))) { |
| for (i = 0; i < size; i += 4) |
| iobj->suspend[i / 4] = nvkm_ro32(memory, i); |
| } else { |
| memcpy_fromio(iobj->suspend, map, size); |
| } |
| nvkm_done(memory); |
| return 0; |
| } |
| |
| void |
| nvkm_instobj_dtor(struct nvkm_instmem *imem, struct nvkm_instobj *iobj) |
| { |
| spin_lock(&imem->lock); |
| list_del(&iobj->head); |
| spin_unlock(&imem->lock); |
| } |
| |
| void |
| nvkm_instobj_ctor(const struct nvkm_memory_func *func, |
| struct nvkm_instmem *imem, struct nvkm_instobj *iobj) |
| { |
| nvkm_memory_ctor(func, &iobj->memory); |
| iobj->suspend = NULL; |
| spin_lock(&imem->lock); |
| list_add_tail(&iobj->head, &imem->list); |
| spin_unlock(&imem->lock); |
| } |
| |
| int |
| nvkm_instobj_new(struct nvkm_instmem *imem, u32 size, u32 align, bool zero, |
| struct nvkm_memory **pmemory) |
| { |
| struct nvkm_subdev *subdev = &imem->subdev; |
| struct nvkm_memory *memory = NULL; |
| u32 offset; |
| int ret; |
| |
| ret = imem->func->memory_new(imem, size, align, zero, &memory); |
| if (ret) { |
| nvkm_error(subdev, "OOM: %08x %08x %d\n", size, align, ret); |
| goto done; |
| } |
| |
| nvkm_trace(subdev, "new %08x %08x %d: %010llx %010llx\n", size, align, |
| zero, nvkm_memory_addr(memory), nvkm_memory_size(memory)); |
| |
| if (!imem->func->zero && zero) { |
| void __iomem *map = nvkm_kmap(memory); |
| if (unlikely(!map)) { |
| for (offset = 0; offset < size; offset += 4) |
| nvkm_wo32(memory, offset, 0x00000000); |
| } else { |
| memset_io(map, 0x00, size); |
| } |
| nvkm_done(memory); |
| } |
| |
| done: |
| if (ret) |
| nvkm_memory_unref(&memory); |
| *pmemory = memory; |
| return ret; |
| } |
| |
| /****************************************************************************** |
| * instmem subdev base implementation |
| *****************************************************************************/ |
| |
| u32 |
| nvkm_instmem_rd32(struct nvkm_instmem *imem, u32 addr) |
| { |
| return imem->func->rd32(imem, addr); |
| } |
| |
| void |
| nvkm_instmem_wr32(struct nvkm_instmem *imem, u32 addr, u32 data) |
| { |
| return imem->func->wr32(imem, addr, data); |
| } |
| |
| void |
| nvkm_instmem_boot(struct nvkm_instmem *imem) |
| { |
| /* Separate bootstrapped objects from normal list, as we need |
| * to make sure they're accessed with the slowpath on suspend |
| * and resume. |
| */ |
| struct nvkm_instobj *iobj, *itmp; |
| spin_lock(&imem->lock); |
| list_for_each_entry_safe(iobj, itmp, &imem->list, head) { |
| list_move_tail(&iobj->head, &imem->boot); |
| } |
| spin_unlock(&imem->lock); |
| } |
| |
| static int |
| nvkm_instmem_fini(struct nvkm_subdev *subdev, bool suspend) |
| { |
| struct nvkm_instmem *imem = nvkm_instmem(subdev); |
| struct nvkm_instobj *iobj; |
| |
| if (suspend) { |
| list_for_each_entry(iobj, &imem->list, head) { |
| int ret = nvkm_instobj_save(iobj); |
| if (ret) |
| return ret; |
| } |
| |
| nvkm_bar_bar2_fini(subdev->device); |
| |
| list_for_each_entry(iobj, &imem->boot, head) { |
| int ret = nvkm_instobj_save(iobj); |
| if (ret) |
| return ret; |
| } |
| } |
| |
| if (imem->func->fini) |
| imem->func->fini(imem); |
| |
| return 0; |
| } |
| |
| static int |
| nvkm_instmem_init(struct nvkm_subdev *subdev) |
| { |
| struct nvkm_instmem *imem = nvkm_instmem(subdev); |
| struct nvkm_instobj *iobj; |
| |
| list_for_each_entry(iobj, &imem->boot, head) { |
| if (iobj->suspend) |
| nvkm_instobj_load(iobj); |
| } |
| |
| nvkm_bar_bar2_init(subdev->device); |
| |
| list_for_each_entry(iobj, &imem->list, head) { |
| if (iobj->suspend) |
| nvkm_instobj_load(iobj); |
| } |
| |
| return 0; |
| } |
| |
| static int |
| nvkm_instmem_oneinit(struct nvkm_subdev *subdev) |
| { |
| struct nvkm_instmem *imem = nvkm_instmem(subdev); |
| if (imem->func->oneinit) |
| return imem->func->oneinit(imem); |
| return 0; |
| } |
| |
| static void * |
| nvkm_instmem_dtor(struct nvkm_subdev *subdev) |
| { |
| struct nvkm_instmem *imem = nvkm_instmem(subdev); |
| void *data = imem; |
| if (imem->func->dtor) |
| data = imem->func->dtor(imem); |
| mutex_destroy(&imem->mutex); |
| return data; |
| } |
| |
| static const struct nvkm_subdev_func |
| nvkm_instmem = { |
| .dtor = nvkm_instmem_dtor, |
| .oneinit = nvkm_instmem_oneinit, |
| .init = nvkm_instmem_init, |
| .fini = nvkm_instmem_fini, |
| }; |
| |
| void |
| nvkm_instmem_ctor(const struct nvkm_instmem_func *func, struct nvkm_device *device, |
| enum nvkm_subdev_type type, int inst, struct nvkm_instmem *imem) |
| { |
| nvkm_subdev_ctor(&nvkm_instmem, device, type, inst, &imem->subdev); |
| imem->func = func; |
| spin_lock_init(&imem->lock); |
| INIT_LIST_HEAD(&imem->list); |
| INIT_LIST_HEAD(&imem->boot); |
| mutex_init(&imem->mutex); |
| } |