From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- drivers/gpu/drm/nouveau/nvkm/subdev/fuse/gf100.c | 54 ++++++++++++++++++++++++ 1 file changed, 54 insertions(+) create mode 100644 drivers/gpu/drm/nouveau/nvkm/subdev/fuse/gf100.c (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/fuse/gf100.c') diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/fuse/gf100.c b/drivers/gpu/drm/nouveau/nvkm/subdev/fuse/gf100.c new file mode 100644 index 000000000..01f770654 --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/fuse/gf100.c @@ -0,0 +1,54 @@ +/* + * Copyright 2014 Martin Peres + * + * 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: Martin Peres + */ +#include "priv.h" + +static u32 +gf100_fuse_read(struct nvkm_fuse *fuse, u32 addr) +{ + struct nvkm_device *device = fuse->subdev.device; + unsigned long flags; + u32 fuse_enable, unk, val; + + /* racy if another part of nvkm start writing to these regs */ + spin_lock_irqsave(&fuse->lock, flags); + fuse_enable = nvkm_mask(device, 0x022400, 0x800, 0x800); + unk = nvkm_mask(device, 0x021000, 0x1, 0x1); + val = nvkm_rd32(device, 0x021100 + addr); + nvkm_wr32(device, 0x021000, unk); + nvkm_wr32(device, 0x022400, fuse_enable); + spin_unlock_irqrestore(&fuse->lock, flags); + return val; +} + +static const struct nvkm_fuse_func +gf100_fuse = { + .read = gf100_fuse_read, +}; + +int +gf100_fuse_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, + struct nvkm_fuse **pfuse) +{ + return nvkm_fuse_new_(&gf100_fuse, device, type, inst, pfuse); +} -- cgit v1.2.3