/*
* Copyright 2018 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.
*/
#include "priv.h"
#include <core/memory.h>
#include <subdev/gsp.h>
#include <subdev/mc.h>
#include <subdev/mmu.h>
#include <subdev/vfn.h>
#include <engine/fifo.h>
#include <nvif/class.h>
static irqreturn_t
tu102_fault_buffer_notify(struct nvkm_inth *inth)
{
struct nvkm_fault_buffer *buffer = container_of(inth, typeof(*buffer), inth);
nvkm_event_ntfy(&buffer->fault->event, buffer->id, NVKM_FAULT_BUFFER_EVENT_PENDING);
return IRQ_HANDLED;
}
static void
tu102_fault_buffer_intr(struct nvkm_fault_buffer *buffer, bool enable)
{
if (enable)
nvkm_inth_allow(&buffer->inth);
else
nvkm_inth_block(&buffer->inth);
}
static void
tu102_fault_buffer_fini(struct nvkm_fault_buffer *buffer)
{
struct nvkm_device *device = buffer->fault->subdev.device;
const u32 foff = buffer->id * 0x20;
nvkm_mask(device, 0xb83010 + foff, 0x80000000, 0x00000000);
}
static void
tu102_fault_buffer_init(struct nvkm_fault_buffer *buffer)
{
struct nvkm_device *device = buffer->fault->subdev.device;
const u32 foff = buffer->id * 0x20;
nvkm_mask(device, 0xb83010 + foff, 0xc0000000, 0x40000000);
nvkm_wr32(device, 0xb83004 + foff, upper_32_bits(buffer->addr));
nvkm_wr32(device, 0xb83000 + foff, lower_32_bits(buffer->addr));
nvkm_mask(device, 0xb83010 + foff, 0x80000000, 0x80000000);
}
static void
tu102_fault_buffer_info(struct nvkm_fault_buffer *buffer)
{
struct nvkm_device *device = buffer->fault->subdev.device;
const u32 foff = buffer->id * 0x20;
nvkm_mask(device, 0xb83010 + foff, 0x40000000, 0x40000000);
buffer->entries = nvkm_rd32(device, 0xb83010 + foff) & 0x000fffff;
buffer->get = 0xb83008 + foff;
buffer->put = 0xb8300c + foff;
}
static irqreturn_t
tu102_fault_info_fault(struct nvkm_inth *inth)
{
struct nvkm_fault *fault = container_of(inth, typeof(*fault), info_fault);
struct nvkm_subdev *subdev = &fault->subdev;
struct nvkm_device *device = subdev->device;
struct nvkm_fault_data info;
const u32 addrlo = nvkm_rd32(device, 0xb83080);
const u32 addrhi = nvkm_rd32(device, 0xb83084);
const u32 info0 = nvkm_rd32(device, 0xb83088);
const u32 insthi = nvkm_rd32(device, 0xb8308c);
const u32 info1 = nvkm_rd32(device, 0xb83090);
info.addr = ((u64)addrhi << 32) | addrlo;
info.inst = ((u64)insthi << 32) | (info0 & 0xfffff000);
info.time = 0;
info.engine = (info0 & 0x000000ff);
info.valid = (info1 & 0x80000000) >> 31;
info.gpc = (info1 & 0x1f000000) >> 24;
info.hub = (info1 & 0x00100000) >> 20;
info.access = (info1 & 0x000f0000) >> 16;
info.client = (info1 & 0x00007f00) >> 8;
info.reason = (info1 & 0x0000001f);
nvkm_fifo_fault(device->fifo, &info);
nvkm_wr32(device, 0xb83094, 0x80000000);
return IRQ_HANDLED;
}
static void
tu102_fault_fini(struct nvkm_fault *fault)
{
nvkm_event_ntfy_block(&fault->nrpfb);
flush_work(&fault->nrpfb_work);
if (fault->buffer[0])
fault->func->buffer.fini(fault->buffer[0]);
nvkm_inth_block(&fault->info_fault);
}
static void
tu102_fault_init(struct nvkm_fault *fault)
{
nvkm_inth_allow(&fault->info_fault);
fault->func->buffer.init(fault->buffer[0]);
nvkm_event_ntfy_allow(&fault->nrpfb);
}
static int
tu102_fault_oneinit(struct nvkm_fault *fault)
{
struct nvkm_device *device = fault->subdev.device;
struct nvkm_intr *intr = &device->vfn->intr;
int ret, i;
ret = nvkm_inth_add(intr, nvkm_rd32(device, 0x100ee0) & 0x0000ffff,
NVKM_INTR_PRIO_NORMAL, &fault->subdev, tu102_fault_info_fault,
&fault->info_fault);
if (ret)
return ret;
for (i = 0; i < fault->buffer_nr; i++) {
ret = nvkm_inth_add(intr, nvkm_rd32(device, 0x100ee4 + (i * 4)) >> 16,
NVKM_INTR_PRIO_NORMAL, &fault->subdev,
tu102_fault_buffer_notify, &fault->buffer[i]->inth);
if (ret)
return ret;
}
return gv100_fault_oneinit(fault);
}
static const struct nvkm_fault_func
tu102_fault = {
.oneinit = tu102_fault_oneinit,
.init = tu102_fault_init,
.fini = tu102_fault_fini,
.buffer.nr = 2,
.buffer.entry_size = 32,
.buffer.info = tu102_fault_buffer_info,
.buffer.pin = gp100_fault_buffer_pin,
.buffer.init = tu102_fault_buffer_init,
.buffer.fini = tu102_fault_buffer_fini,
.buffer.intr = tu102_fault_buffer_intr,
.user = { { 0, 0, VOLTA_FAULT_BUFFER_A }, 1 },
};
int
tu102_fault_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
struct nvkm_fault **pfault)
{
int ret;
if (nvkm_gsp_rm(device->gsp))
return -ENODEV;
ret = nvkm_fault_new_(&tu102_fault, device, type, inst, pfault);
if (ret)
return ret;
INIT_WORK(&(*pfault)->nrpfb_work, gv100_fault_buffer_process);
return 0;
}
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