diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/top/base.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/subdev/top/base.c | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/top/base.c b/drivers/gpu/drm/nouveau/nvkm/subdev/top/base.c new file mode 100644 index 000000000..28d0789f5 --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/top/base.c @@ -0,0 +1,158 @@ +/* + * Copyright 2016 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 <bskeggs@redhat.com> + */ +#include "priv.h" + +struct nvkm_top_device * +nvkm_top_device_new(struct nvkm_top *top) +{ + struct nvkm_top_device *info = kmalloc(sizeof(*info), GFP_KERNEL); + if (info) { + info->type = NVKM_SUBDEV_NR; + info->inst = -1; + info->addr = 0; + info->fault = -1; + info->engine = -1; + info->runlist = -1; + info->reset = -1; + info->intr = -1; + list_add_tail(&info->head, &top->device); + } + return info; +} + +u32 +nvkm_top_addr(struct nvkm_device *device, enum nvkm_subdev_type type, int inst) +{ + struct nvkm_top *top = device->top; + struct nvkm_top_device *info; + + if (top) { + list_for_each_entry(info, &top->device, head) { + if (info->type == type && info->inst == inst) + return info->addr; + } + } + + return 0; +} + +u32 +nvkm_top_reset(struct nvkm_device *device, enum nvkm_subdev_type type, int inst) +{ + struct nvkm_top *top = device->top; + struct nvkm_top_device *info; + + if (top) { + list_for_each_entry(info, &top->device, head) { + if (info->type == type && info->inst == inst && info->reset >= 0) + return BIT(info->reset); + } + } + + return 0; +} + +u32 +nvkm_top_intr_mask(struct nvkm_device *device, enum nvkm_subdev_type type, int inst) +{ + struct nvkm_top *top = device->top; + struct nvkm_top_device *info; + + if (top) { + list_for_each_entry(info, &top->device, head) { + if (info->type == type && info->inst == inst && info->intr >= 0) + return BIT(info->intr); + } + } + + return 0; +} + +int +nvkm_top_fault_id(struct nvkm_device *device, enum nvkm_subdev_type type, int inst) +{ + struct nvkm_top *top = device->top; + struct nvkm_top_device *info; + + list_for_each_entry(info, &top->device, head) { + if (info->type == type && info->inst == inst && info->fault >= 0) + return info->fault; + } + + return -ENOENT; +} + +struct nvkm_subdev * +nvkm_top_fault(struct nvkm_device *device, int fault) +{ + struct nvkm_top *top = device->top; + struct nvkm_top_device *info; + + list_for_each_entry(info, &top->device, head) { + if (info->fault == fault) + return nvkm_device_subdev(device, info->type, info->inst); + } + + return NULL; +} + +static int +nvkm_top_oneinit(struct nvkm_subdev *subdev) +{ + struct nvkm_top *top = nvkm_top(subdev); + return top->func->oneinit(top); +} + +static void * +nvkm_top_dtor(struct nvkm_subdev *subdev) +{ + struct nvkm_top *top = nvkm_top(subdev); + struct nvkm_top_device *info, *temp; + + list_for_each_entry_safe(info, temp, &top->device, head) { + list_del(&info->head); + kfree(info); + } + + return top; +} + +static const struct nvkm_subdev_func +nvkm_top = { + .dtor = nvkm_top_dtor, + .oneinit = nvkm_top_oneinit, +}; + +int +nvkm_top_new_(const struct nvkm_top_func *func, struct nvkm_device *device, + enum nvkm_subdev_type type, int inst, struct nvkm_top **ptop) +{ + struct nvkm_top *top; + if (!(top = *ptop = kzalloc(sizeof(*top), GFP_KERNEL))) + return -ENOMEM; + nvkm_subdev_ctor(&nvkm_top, device, type, inst, &top->subdev); + top->func = func; + INIT_LIST_HEAD(&top->device); + return 0; +} |