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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/bar/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/bar/base.c')
-rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/subdev/bar/base.c | 142 |
1 files changed, 142 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/bar/base.c b/drivers/gpu/drm/nouveau/nvkm/subdev/bar/base.c new file mode 100644 index 000000000..d017a1b5e --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/bar/base.c @@ -0,0 +1,142 @@ +/* + * 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" + +void +nvkm_bar_flush(struct nvkm_bar *bar) +{ + if (bar && bar->func->flush) + bar->func->flush(bar); +} + +struct nvkm_vmm * +nvkm_bar_bar1_vmm(struct nvkm_device *device) +{ + return device->bar->func->bar1.vmm(device->bar); +} + +void +nvkm_bar_bar1_reset(struct nvkm_device *device) +{ + struct nvkm_bar *bar = device->bar; + if (bar) { + bar->func->bar1.init(bar); + bar->func->bar1.wait(bar); + } +} + +struct nvkm_vmm * +nvkm_bar_bar2_vmm(struct nvkm_device *device) +{ + /* Denies access to BAR2 when it's not initialised, used by INSTMEM + * to know when object access needs to go through the BAR0 window. + */ + struct nvkm_bar *bar = device->bar; + if (bar && bar->bar2) + return bar->func->bar2.vmm(bar); + return NULL; +} + +void +nvkm_bar_bar2_reset(struct nvkm_device *device) +{ + struct nvkm_bar *bar = device->bar; + if (bar && bar->bar2) { + bar->func->bar2.init(bar); + bar->func->bar2.wait(bar); + } +} + +void +nvkm_bar_bar2_fini(struct nvkm_device *device) +{ + struct nvkm_bar *bar = device->bar; + if (bar && bar->bar2) { + bar->func->bar2.fini(bar); + bar->bar2 = false; + } +} + +void +nvkm_bar_bar2_init(struct nvkm_device *device) +{ + struct nvkm_bar *bar = device->bar; + if (bar && bar->subdev.oneinit && !bar->bar2 && bar->func->bar2.init) { + bar->func->bar2.init(bar); + bar->func->bar2.wait(bar); + bar->bar2 = true; + } +} + +static int +nvkm_bar_fini(struct nvkm_subdev *subdev, bool suspend) +{ + struct nvkm_bar *bar = nvkm_bar(subdev); + if (bar->func->bar1.fini) + bar->func->bar1.fini(bar); + return 0; +} + +static int +nvkm_bar_init(struct nvkm_subdev *subdev) +{ + struct nvkm_bar *bar = nvkm_bar(subdev); + bar->func->bar1.init(bar); + bar->func->bar1.wait(bar); + if (bar->func->init) + bar->func->init(bar); + return 0; +} + +static int +nvkm_bar_oneinit(struct nvkm_subdev *subdev) +{ + struct nvkm_bar *bar = nvkm_bar(subdev); + return bar->func->oneinit(bar); +} + +static void * +nvkm_bar_dtor(struct nvkm_subdev *subdev) +{ + struct nvkm_bar *bar = nvkm_bar(subdev); + nvkm_bar_bar2_fini(subdev->device); + return bar->func->dtor(bar); +} + +static const struct nvkm_subdev_func +nvkm_bar = { + .dtor = nvkm_bar_dtor, + .oneinit = nvkm_bar_oneinit, + .init = nvkm_bar_init, + .fini = nvkm_bar_fini, +}; + +void +nvkm_bar_ctor(const struct nvkm_bar_func *func, struct nvkm_device *device, + enum nvkm_subdev_type type, int inst, struct nvkm_bar *bar) +{ + nvkm_subdev_ctor(&nvkm_bar, device, type, inst, &bar->subdev); + bar->func = func; + spin_lock_init(&bar->lock); +} |