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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/gpu/drm/nouveau/nvkm/subdev/instmem/base.c | |
parent | Initial commit. (diff) | |
download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip |
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/instmem/base.c')
-rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/subdev/instmem/base.c | 246 |
1 files changed, 246 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/instmem/base.c b/drivers/gpu/drm/nouveau/nvkm/subdev/instmem/base.c new file mode 100644 index 000000000..cd8163a52 --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/instmem/base.c @@ -0,0 +1,246 @@ +/* + * 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); +} |