143 lines
3.5 KiB
C
143 lines
3.5 KiB
C
/*
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* Copyright 2012 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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* Authors: Ben Skeggs
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*/
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#include "priv.h"
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void
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nvkm_bar_flush(struct nvkm_bar *bar)
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{
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if (bar && bar->func->flush)
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bar->func->flush(bar);
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}
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struct nvkm_vmm *
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nvkm_bar_bar1_vmm(struct nvkm_device *device)
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{
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return device->bar->func->bar1.vmm(device->bar);
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}
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void
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nvkm_bar_bar1_reset(struct nvkm_device *device)
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{
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struct nvkm_bar *bar = device->bar;
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if (bar) {
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bar->func->bar1.init(bar);
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bar->func->bar1.wait(bar);
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}
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}
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struct nvkm_vmm *
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nvkm_bar_bar2_vmm(struct nvkm_device *device)
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{
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/* Denies access to BAR2 when it's not initialised, used by INSTMEM
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* to know when object access needs to go through the BAR0 window.
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*/
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struct nvkm_bar *bar = device->bar;
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if (bar && bar->bar2)
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return bar->func->bar2.vmm(bar);
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return NULL;
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}
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void
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nvkm_bar_bar2_reset(struct nvkm_device *device)
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{
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struct nvkm_bar *bar = device->bar;
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if (bar && bar->bar2) {
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bar->func->bar2.init(bar);
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bar->func->bar2.wait(bar);
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}
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}
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void
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nvkm_bar_bar2_fini(struct nvkm_device *device)
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{
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struct nvkm_bar *bar = device->bar;
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if (bar && bar->bar2) {
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bar->func->bar2.fini(bar);
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bar->bar2 = false;
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}
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}
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void
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nvkm_bar_bar2_init(struct nvkm_device *device)
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{
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struct nvkm_bar *bar = device->bar;
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if (bar && bar->subdev.oneinit && !bar->bar2 && bar->func->bar2.init) {
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bar->func->bar2.init(bar);
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bar->func->bar2.wait(bar);
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bar->bar2 = true;
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}
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}
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static int
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nvkm_bar_fini(struct nvkm_subdev *subdev, bool suspend)
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{
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struct nvkm_bar *bar = nvkm_bar(subdev);
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if (bar->func->bar1.fini)
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bar->func->bar1.fini(bar);
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return 0;
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}
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static int
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nvkm_bar_init(struct nvkm_subdev *subdev)
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{
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struct nvkm_bar *bar = nvkm_bar(subdev);
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bar->func->bar1.init(bar);
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bar->func->bar1.wait(bar);
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if (bar->func->init)
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bar->func->init(bar);
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return 0;
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}
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static int
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nvkm_bar_oneinit(struct nvkm_subdev *subdev)
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{
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struct nvkm_bar *bar = nvkm_bar(subdev);
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return bar->func->oneinit(bar);
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}
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static void *
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nvkm_bar_dtor(struct nvkm_subdev *subdev)
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{
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struct nvkm_bar *bar = nvkm_bar(subdev);
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nvkm_bar_bar2_fini(subdev->device);
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return bar->func->dtor(bar);
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}
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static const struct nvkm_subdev_func
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nvkm_bar = {
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.dtor = nvkm_bar_dtor,
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.oneinit = nvkm_bar_oneinit,
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.init = nvkm_bar_init,
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.fini = nvkm_bar_fini,
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};
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void
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nvkm_bar_ctor(const struct nvkm_bar_func *func, struct nvkm_device *device,
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enum nvkm_subdev_type type, int inst, struct nvkm_bar *bar)
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{
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nvkm_subdev_ctor(&nvkm_bar, device, type, inst, &bar->subdev);
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bar->func = func;
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spin_lock_init(&bar->lock);
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}
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