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git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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9887bda0c8
There's plenty of ways to fudge the GPU when developing on nouveau by mistake, some of which can result in nouveau seriously spamming dmesg with fault errors. This can be somewhat annoying, as it can quickly overrun the message buffer (or your terminal emulator's buffer) and get rid of actually useful feedback from the driver. While working on my new atomic only MST branch, I ran into this issue a couple of times. So, let's fix this by adding nvkm_error_ratelimited(), and using it to ratelimit errors from faults. This should be fine for developers, since it's nearly always only the first few faults that we care about seeing. Plus, you can turn off rate limiting in the kernel if you really need to. Signed-off-by: Lyude Paul <lyude@redhat.com> Reviewed-by: Karol Herbst <kherbst@redhat.com> Cc: stable@vger.kernel.org Link: https://patchwork.freedesktop.org/patch/msgid/20220429195350.85620-1-lyude@redhat.com
89 lines
2.7 KiB
C
89 lines
2.7 KiB
C
/*
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* Copyright 2012 Nouveau Community
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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: Martin Peres <martin.peres@labri.fr>
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* Ben Skeggs
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*/
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#include "priv.h"
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#include <subdev/gpio.h>
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#include <subdev/therm.h>
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static void
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nv31_bus_intr(struct nvkm_bus *bus)
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{
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struct nvkm_subdev *subdev = &bus->subdev;
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struct nvkm_device *device = subdev->device;
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u32 stat = nvkm_rd32(device, 0x001100) & nvkm_rd32(device, 0x001140);
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u32 gpio = nvkm_rd32(device, 0x001104) & nvkm_rd32(device, 0x001144);
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if (gpio) {
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struct nvkm_gpio *gpio = device->gpio;
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if (gpio)
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nvkm_subdev_intr(&gpio->subdev);
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}
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if (stat & 0x00000008) { /* NV41- */
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u32 addr = nvkm_rd32(device, 0x009084);
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u32 data = nvkm_rd32(device, 0x009088);
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nvkm_error_ratelimited(subdev, "MMIO %s of %08x FAULT at %06x\n",
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(addr & 0x00000002) ? "write" : "read", data,
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(addr & 0x00fffffc));
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stat &= ~0x00000008;
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nvkm_wr32(device, 0x001100, 0x00000008);
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}
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if (stat & 0x00070000) {
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struct nvkm_therm *therm = device->therm;
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if (therm)
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nvkm_subdev_intr(&therm->subdev);
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stat &= ~0x00070000;
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nvkm_wr32(device, 0x001100, 0x00070000);
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}
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if (stat) {
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nvkm_error(subdev, "intr %08x\n", stat);
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nvkm_mask(device, 0x001140, stat, 0x00000000);
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}
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}
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static void
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nv31_bus_init(struct nvkm_bus *bus)
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{
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struct nvkm_device *device = bus->subdev.device;
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nvkm_wr32(device, 0x001100, 0xffffffff);
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nvkm_wr32(device, 0x001140, 0x00070008);
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}
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static const struct nvkm_bus_func
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nv31_bus = {
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.init = nv31_bus_init,
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.intr = nv31_bus_intr,
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};
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int
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nv31_bus_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
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struct nvkm_bus **pbus)
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{
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return nvkm_bus_new_(&nv31_bus, device, type, inst, pbus);
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}
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