From 1ce466894b532dc26b02a334fc609378b9231ea8 Mon Sep 17 00:00:00 2001
From: Ben Skeggs <bskeggs@redhat.com>
Date: Tue, 8 May 2018 20:39:46 +1000
Subject: drm/nouveau/core: define FAULT subdev

This will be responsible for the handling of MMU fault buffers on GPUs
that support them.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
---
 drivers/gpu/drm/nouveau/include/nvkm/subdev/fault.h | 8 ++++++++
 1 file changed, 8 insertions(+)
 create mode 100644 drivers/gpu/drm/nouveau/include/nvkm/subdev/fault.h

(limited to 'drivers/gpu/drm/nouveau/include/nvkm/subdev/fault.h')

diff --git a/drivers/gpu/drm/nouveau/include/nvkm/subdev/fault.h b/drivers/gpu/drm/nouveau/include/nvkm/subdev/fault.h
new file mode 100644
index 000000000000..35a9cfc9301d
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/include/nvkm/subdev/fault.h
@@ -0,0 +1,8 @@
+#ifndef __NVKM_FAULT_H__
+#define __NVKM_FAULT_H__
+#include <core/subdev.h>
+
+struct nvkm_fault {
+	struct nvkm_subdev subdev;
+};
+#endif
-- 
cgit 


From 36780d7eee827047bd9e736f6e2c0be650f30b4e Mon Sep 17 00:00:00 2001
From: Ben Skeggs <bskeggs@redhat.com>
Date: Tue, 8 May 2018 20:39:46 +1000
Subject: drm/nouveau/fault: add infrastructure to support fault buffers

GPU-specific support will be added separately.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
---
 .../gpu/drm/nouveau/include/nvkm/subdev/fault.h    |   6 +
 drivers/gpu/drm/nouveau/nvkm/subdev/fault/Kbuild   |   1 +
 drivers/gpu/drm/nouveau/nvkm/subdev/fault/base.c   | 179 +++++++++++++++++++++
 drivers/gpu/drm/nouveau/nvkm/subdev/fault/priv.h   |  34 ++++
 4 files changed, 220 insertions(+)
 create mode 100644 drivers/gpu/drm/nouveau/nvkm/subdev/fault/base.c
 create mode 100644 drivers/gpu/drm/nouveau/nvkm/subdev/fault/priv.h

(limited to 'drivers/gpu/drm/nouveau/include/nvkm/subdev/fault.h')

diff --git a/drivers/gpu/drm/nouveau/include/nvkm/subdev/fault.h b/drivers/gpu/drm/nouveau/include/nvkm/subdev/fault.h
index 35a9cfc9301d..6ba9c179aa09 100644
--- a/drivers/gpu/drm/nouveau/include/nvkm/subdev/fault.h
+++ b/drivers/gpu/drm/nouveau/include/nvkm/subdev/fault.h
@@ -3,6 +3,12 @@
 #include <core/subdev.h>
 
 struct nvkm_fault {
+	const struct nvkm_fault_func *func;
 	struct nvkm_subdev subdev;
+
+	struct nvkm_fault_buffer *buffer[1];
+	int buffer_nr;
+
+	struct nvkm_event event;
 };
 #endif
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/fault/Kbuild b/drivers/gpu/drm/nouveau/nvkm/subdev/fault/Kbuild
index e69de29bb2d1..2e4c226634a1 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/fault/Kbuild
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/fault/Kbuild
@@ -0,0 +1 @@
+nvkm-y += nvkm/subdev/fault/base.o
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/fault/base.c b/drivers/gpu/drm/nouveau/nvkm/subdev/fault/base.c
new file mode 100644
index 000000000000..007bf4af33b9
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/fault/base.c
@@ -0,0 +1,179 @@
+/*
+ * 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 <core/notify.h>
+#include <subdev/bar.h>
+#include <subdev/mmu.h>
+
+static void
+nvkm_fault_ntfy_fini(struct nvkm_event *event, int type, int index)
+{
+	struct nvkm_fault *fault = container_of(event, typeof(*fault), event);
+	fault->func->buffer.fini(fault->buffer[index]);
+}
+
+static void
+nvkm_fault_ntfy_init(struct nvkm_event *event, int type, int index)
+{
+	struct nvkm_fault *fault = container_of(event, typeof(*fault), event);
+	fault->func->buffer.init(fault->buffer[index]);
+}
+
+static int
+nvkm_fault_ntfy_ctor(struct nvkm_object *object, void *argv, u32 argc,
+		     struct nvkm_notify *notify)
+{
+	struct nvkm_fault_buffer *buffer = nvkm_fault_buffer(object);
+	if (argc == 0) {
+		notify->size  = 0;
+		notify->types = 1;
+		notify->index = buffer->id;
+		return 0;
+	}
+	return -ENOSYS;
+}
+
+static const struct nvkm_event_func
+nvkm_fault_ntfy = {
+	.ctor = nvkm_fault_ntfy_ctor,
+	.init = nvkm_fault_ntfy_init,
+	.fini = nvkm_fault_ntfy_fini,
+};
+
+static void
+nvkm_fault_intr(struct nvkm_subdev *subdev)
+{
+	struct nvkm_fault *fault = nvkm_fault(subdev);
+	return fault->func->intr(fault);
+}
+
+static int
+nvkm_fault_fini(struct nvkm_subdev *subdev, bool suspend)
+{
+	struct nvkm_fault *fault = nvkm_fault(subdev);
+	if (fault->func->fini)
+		fault->func->fini(fault);
+	return 0;
+}
+
+static int
+nvkm_fault_init(struct nvkm_subdev *subdev)
+{
+	struct nvkm_fault *fault = nvkm_fault(subdev);
+	if (fault->func->init)
+		fault->func->init(fault);
+	return 0;
+}
+
+static int
+nvkm_fault_oneinit_buffer(struct nvkm_fault *fault, int id)
+{
+	struct nvkm_subdev *subdev = &fault->subdev;
+	struct nvkm_device *device = subdev->device;
+	struct nvkm_vmm *bar2 = nvkm_bar_bar2_vmm(device);
+	struct nvkm_fault_buffer *buffer;
+	int ret;
+
+	if (!(buffer = kzalloc(sizeof(*buffer), GFP_KERNEL)))
+		return -ENOMEM;
+	buffer->fault = fault;
+	buffer->id = id;
+	buffer->entries = fault->func->buffer.entries(buffer);
+	fault->buffer[id] = buffer;
+
+	nvkm_debug(subdev, "buffer %d: %d entries\n", id, buffer->entries);
+
+	ret = nvkm_memory_new(device, NVKM_MEM_TARGET_INST, buffer->entries *
+			      fault->func->buffer.entry_size, 0x1000, true,
+			      &buffer->mem);
+	if (ret)
+		return ret;
+
+	ret = nvkm_vmm_get(bar2, 12, nvkm_memory_size(buffer->mem),
+			   &buffer->vma);
+	if (ret)
+		return ret;
+
+	return nvkm_memory_map(buffer->mem, 0, bar2, buffer->vma, NULL, 0);
+}
+
+static int
+nvkm_fault_oneinit(struct nvkm_subdev *subdev)
+{
+	struct nvkm_fault *fault = nvkm_fault(subdev);
+	int ret, i;
+
+	for (i = 0; i < ARRAY_SIZE(fault->buffer); i++) {
+		if (i < fault->func->buffer.nr) {
+			ret = nvkm_fault_oneinit_buffer(fault, i);
+			if (ret)
+				return ret;
+			fault->buffer_nr = i + 1;
+		}
+	}
+
+	return nvkm_event_init(&nvkm_fault_ntfy, 1, fault->buffer_nr,
+			       &fault->event);
+}
+
+static void *
+nvkm_fault_dtor(struct nvkm_subdev *subdev)
+{
+	struct nvkm_vmm *bar2 = nvkm_bar_bar2_vmm(subdev->device);
+	struct nvkm_fault *fault = nvkm_fault(subdev);
+	int i;
+
+	nvkm_event_fini(&fault->event);
+
+	for (i = 0; i < fault->buffer_nr; i++) {
+		if (fault->buffer[i]) {
+			nvkm_vmm_put(bar2, &fault->buffer[i]->vma);
+			nvkm_memory_unref(&fault->buffer[i]->mem);
+			kfree(fault->buffer[i]);
+		}
+	}
+
+	return fault;
+}
+
+static const struct nvkm_subdev_func
+nvkm_fault = {
+	.dtor = nvkm_fault_dtor,
+	.oneinit = nvkm_fault_oneinit,
+	.init = nvkm_fault_init,
+	.fini = nvkm_fault_fini,
+	.intr = nvkm_fault_intr,
+};
+
+int
+nvkm_fault_new_(const struct nvkm_fault_func *func, struct nvkm_device *device,
+		int index, struct nvkm_fault **pfault)
+{
+	struct nvkm_fault *fault;
+	if (!(fault = *pfault = kzalloc(sizeof(*fault), GFP_KERNEL)))
+		return -ENOMEM;
+	nvkm_subdev_ctor(&nvkm_fault, device, index, &fault->subdev);
+	fault->func = func;
+	return 0;
+}
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/fault/priv.h b/drivers/gpu/drm/nouveau/nvkm/subdev/fault/priv.h
new file mode 100644
index 000000000000..44843ecf12b0
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/fault/priv.h
@@ -0,0 +1,34 @@
+#ifndef __NVKM_FAULT_PRIV_H__
+#define __NVKM_FAULT_PRIV_H__
+#define nvkm_fault_buffer(p) container_of((p), struct nvkm_fault_buffer, object)
+#define nvkm_fault(p) container_of((p), struct nvkm_fault, subdev)
+#include <subdev/fault.h>
+
+#include <core/event.h>
+#include <core/object.h>
+
+struct nvkm_fault_buffer {
+	struct nvkm_object object;
+	struct nvkm_fault *fault;
+	int id;
+	int entries;
+	struct nvkm_memory *mem;
+	struct nvkm_vma *vma;
+};
+
+int nvkm_fault_new_(const struct nvkm_fault_func *, struct nvkm_device *,
+		    int index, struct nvkm_fault **);
+
+struct nvkm_fault_func {
+	void (*init)(struct nvkm_fault *);
+	void (*fini)(struct nvkm_fault *);
+	void (*intr)(struct nvkm_fault *);
+	struct {
+		int nr;
+		u32 entry_size;
+		u32 (*entries)(struct nvkm_fault_buffer *);
+		void (*init)(struct nvkm_fault_buffer *);
+		void (*fini)(struct nvkm_fault_buffer *);
+	} buffer;
+};
+#endif
-- 
cgit 


From d0e9351e420695907e28e921d3786265253787c1 Mon Sep 17 00:00:00 2001
From: Ben Skeggs <bskeggs@redhat.com>
Date: Tue, 8 May 2018 20:39:46 +1000
Subject: drm/nouveau/fault/gp100: implement replayable fault buffer
 initialisation

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
---
 .../gpu/drm/nouveau/include/nvkm/subdev/fault.h    |  2 +
 drivers/gpu/drm/nouveau/nvkm/engine/device/base.c  |  7 +++
 drivers/gpu/drm/nouveau/nvkm/subdev/fault/Kbuild   |  1 +
 drivers/gpu/drm/nouveau/nvkm/subdev/fault/gp100.c  | 69 ++++++++++++++++++++++
 4 files changed, 79 insertions(+)
 create mode 100644 drivers/gpu/drm/nouveau/nvkm/subdev/fault/gp100.c

(limited to 'drivers/gpu/drm/nouveau/include/nvkm/subdev/fault.h')

diff --git a/drivers/gpu/drm/nouveau/include/nvkm/subdev/fault.h b/drivers/gpu/drm/nouveau/include/nvkm/subdev/fault.h
index 6ba9c179aa09..8ca66e572779 100644
--- a/drivers/gpu/drm/nouveau/include/nvkm/subdev/fault.h
+++ b/drivers/gpu/drm/nouveau/include/nvkm/subdev/fault.h
@@ -11,4 +11,6 @@ struct nvkm_fault {
 
 	struct nvkm_event event;
 };
+
+int gp100_fault_new(struct nvkm_device *, int, struct nvkm_fault **);
 #endif
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/device/base.c b/drivers/gpu/drm/nouveau/nvkm/engine/device/base.c
index 70f3cc0844c9..379e701962a7 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/device/base.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/device/base.c
@@ -2161,6 +2161,7 @@ nv130_chipset = {
 	.bios = nvkm_bios_new,
 	.bus = gf100_bus_new,
 	.devinit = gm200_devinit_new,
+	.fault = gp100_fault_new,
 	.fb = gp100_fb_new,
 	.fuse = gm107_fuse_new,
 	.gpio = gk104_gpio_new,
@@ -2196,6 +2197,7 @@ nv132_chipset = {
 	.bios = nvkm_bios_new,
 	.bus = gf100_bus_new,
 	.devinit = gm200_devinit_new,
+	.fault = gp100_fault_new,
 	.fb = gp102_fb_new,
 	.fuse = gm107_fuse_new,
 	.gpio = gk104_gpio_new,
@@ -2231,6 +2233,7 @@ nv134_chipset = {
 	.bios = nvkm_bios_new,
 	.bus = gf100_bus_new,
 	.devinit = gm200_devinit_new,
+	.fault = gp100_fault_new,
 	.fb = gp102_fb_new,
 	.fuse = gm107_fuse_new,
 	.gpio = gk104_gpio_new,
@@ -2266,6 +2269,7 @@ nv136_chipset = {
 	.bios = nvkm_bios_new,
 	.bus = gf100_bus_new,
 	.devinit = gm200_devinit_new,
+	.fault = gp100_fault_new,
 	.fb = gp102_fb_new,
 	.fuse = gm107_fuse_new,
 	.gpio = gk104_gpio_new,
@@ -2301,6 +2305,7 @@ nv137_chipset = {
 	.bios = nvkm_bios_new,
 	.bus = gf100_bus_new,
 	.devinit = gm200_devinit_new,
+	.fault = gp100_fault_new,
 	.fb = gp102_fb_new,
 	.fuse = gm107_fuse_new,
 	.gpio = gk104_gpio_new,
@@ -2336,6 +2341,7 @@ nv138_chipset = {
 	.bios = nvkm_bios_new,
 	.bus = gf100_bus_new,
 	.devinit = gm200_devinit_new,
+	.fault = gp100_fault_new,
 	.fb = gp102_fb_new,
 	.fuse = gm107_fuse_new,
 	.gpio = gk104_gpio_new,
@@ -2369,6 +2375,7 @@ nv13b_chipset = {
 	.name = "GP10B",
 	.bar = gm20b_bar_new,
 	.bus = gf100_bus_new,
+	.fault = gp100_fault_new,
 	.fb = gp10b_fb_new,
 	.fuse = gm107_fuse_new,
 	.ibus = gp10b_ibus_new,
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/fault/Kbuild b/drivers/gpu/drm/nouveau/nvkm/subdev/fault/Kbuild
index 2e4c226634a1..807ea402a162 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/fault/Kbuild
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/fault/Kbuild
@@ -1 +1,2 @@
 nvkm-y += nvkm/subdev/fault/base.o
+nvkm-y += nvkm/subdev/fault/gp100.o
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/fault/gp100.c b/drivers/gpu/drm/nouveau/nvkm/subdev/fault/gp100.c
new file mode 100644
index 000000000000..5e71db2e8d75
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/fault/gp100.c
@@ -0,0 +1,69 @@
+/*
+ * 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 <subdev/mmu.h>
+
+static void
+gp100_fault_buffer_fini(struct nvkm_fault_buffer *buffer)
+{
+	struct nvkm_device *device = buffer->fault->subdev.device;
+	nvkm_mask(device, 0x002a70, 0x00000001, 0x00000000);
+}
+
+static void
+gp100_fault_buffer_init(struct nvkm_fault_buffer *buffer)
+{
+	struct nvkm_device *device = buffer->fault->subdev.device;
+	nvkm_wr32(device, 0x002a74, upper_32_bits(buffer->vma->addr));
+	nvkm_wr32(device, 0x002a70, lower_32_bits(buffer->vma->addr));
+	nvkm_mask(device, 0x002a70, 0x00000001, 0x00000001);
+}
+
+static u32
+gp100_fault_buffer_entries(struct nvkm_fault_buffer *buffer)
+{
+	return nvkm_rd32(buffer->fault->subdev.device, 0x002a78);
+}
+
+static void
+gp100_fault_intr(struct nvkm_fault *fault)
+{
+	nvkm_event_send(&fault->event, 1, 0, NULL, 0);
+}
+
+static const struct nvkm_fault_func
+gp100_fault = {
+	.intr = gp100_fault_intr,
+	.buffer.nr = 1,
+	.buffer.entry_size = 32,
+	.buffer.entries = gp100_fault_buffer_entries,
+	.buffer.init = gp100_fault_buffer_init,
+	.buffer.fini = gp100_fault_buffer_fini,
+};
+
+int
+gp100_fault_new(struct nvkm_device *device, int index,
+		struct nvkm_fault **pfault)
+{
+	return nvkm_fault_new_(&gp100_fault, device, index, pfault);
+}
-- 
cgit 


From ddc669e25645b32158cc2b6da26faf5dac92fffc Mon Sep 17 00:00:00 2001
From: Ben Skeggs <bskeggs@redhat.com>
Date: Tue, 8 May 2018 20:39:46 +1000
Subject: drm/nouveau/fifo/gk104-: allow fault recovery code to be called by
 other subdevs

This will be required to support Volta.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
---
 drivers/gpu/drm/nouveau/include/nvkm/engine/fifo.h |   2 +
 .../gpu/drm/nouveau/include/nvkm/subdev/fault.h    |  13 ++
 drivers/gpu/drm/nouveau/nvkm/engine/fifo/base.c    |   6 +
 drivers/gpu/drm/nouveau/nvkm/engine/fifo/gk104.c   | 191 ++++++++++++---------
 drivers/gpu/drm/nouveau/nvkm/engine/fifo/gk104.h   |  21 +--
 drivers/gpu/drm/nouveau/nvkm/engine/fifo/gk110.c   |   1 +
 drivers/gpu/drm/nouveau/nvkm/engine/fifo/gk208.c   |   1 +
 drivers/gpu/drm/nouveau/nvkm/engine/fifo/gk20a.c   |   1 +
 drivers/gpu/drm/nouveau/nvkm/engine/fifo/gm107.c   |   1 +
 drivers/gpu/drm/nouveau/nvkm/engine/fifo/gm200.c   |   1 +
 drivers/gpu/drm/nouveau/nvkm/engine/fifo/gm20b.c   |   1 +
 drivers/gpu/drm/nouveau/nvkm/engine/fifo/gp100.c   |   1 +
 drivers/gpu/drm/nouveau/nvkm/engine/fifo/gp10b.c   |   1 +
 drivers/gpu/drm/nouveau/nvkm/engine/fifo/priv.h    |   1 +
 14 files changed, 141 insertions(+), 101 deletions(-)

(limited to 'drivers/gpu/drm/nouveau/include/nvkm/subdev/fault.h')

diff --git a/drivers/gpu/drm/nouveau/include/nvkm/engine/fifo.h b/drivers/gpu/drm/nouveau/include/nvkm/engine/fifo.h
index c17b3a9bf8fb..0d96edee1e6a 100644
--- a/drivers/gpu/drm/nouveau/include/nvkm/engine/fifo.h
+++ b/drivers/gpu/drm/nouveau/include/nvkm/engine/fifo.h
@@ -4,6 +4,7 @@
 #include <core/engine.h>
 #include <core/object.h>
 #include <core/event.h>
+struct nvkm_fault_data;
 
 #define NVKM_FIFO_CHID_NR 4096
 
@@ -45,6 +46,7 @@ struct nvkm_fifo {
 	struct nvkm_event kevent; /* channel killed */
 };
 
+void nvkm_fifo_fault(struct nvkm_fifo *, struct nvkm_fault_data *);
 void nvkm_fifo_pause(struct nvkm_fifo *, unsigned long *);
 void nvkm_fifo_start(struct nvkm_fifo *, unsigned long *);
 
diff --git a/drivers/gpu/drm/nouveau/include/nvkm/subdev/fault.h b/drivers/gpu/drm/nouveau/include/nvkm/subdev/fault.h
index 8ca66e572779..8e9bc30fe65d 100644
--- a/drivers/gpu/drm/nouveau/include/nvkm/subdev/fault.h
+++ b/drivers/gpu/drm/nouveau/include/nvkm/subdev/fault.h
@@ -12,5 +12,18 @@ struct nvkm_fault {
 	struct nvkm_event event;
 };
 
+struct nvkm_fault_data {
+	u64  addr;
+	u64  inst;
+	u64  time;
+	u8 engine;
+	u8  valid;
+	u8    gpc;
+	u8    hub;
+	u8 access;
+	u8 client;
+	u8 reason;
+};
+
 int gp100_fault_new(struct nvkm_device *, int, struct nvkm_fault **);
 #endif
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/base.c b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/base.c
index 49b37a8a94b7..ed56087b4abe 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/base.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/base.c
@@ -56,6 +56,12 @@ nvkm_fifo_start(struct nvkm_fifo *fifo, unsigned long *flags)
 	return fifo->func->start(fifo, flags);
 }
 
+void
+nvkm_fifo_fault(struct nvkm_fifo *fifo, struct nvkm_fault_data *info)
+{
+	return fifo->func->fault(fifo, info);
+}
+
 void
 nvkm_fifo_chan_put(struct nvkm_fifo *fifo, unsigned long flags,
 		   struct nvkm_fifo_chan **pchan)
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gk104.c b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gk104.c
index 84bd703dd897..b5706b15a64d 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gk104.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gk104.c
@@ -27,6 +27,7 @@
 #include <core/client.h>
 #include <core/gpuobj.h>
 #include <subdev/bar.h>
+#include <subdev/fault.h>
 #include <subdev/timer.h>
 #include <subdev/top.h>
 #include <engine/sw.h>
@@ -347,6 +348,90 @@ gk104_fifo_recover_engn(struct gk104_fifo *fifo, int engn)
 	schedule_work(&fifo->recover.work);
 }
 
+static void
+gk104_fifo_fault(struct nvkm_fifo *base, struct nvkm_fault_data *info)
+{
+	struct gk104_fifo *fifo = gk104_fifo(base);
+	struct nvkm_subdev *subdev = &fifo->base.engine.subdev;
+	struct nvkm_device *device = subdev->device;
+	const struct nvkm_enum *er, *ee, *ec, *ea;
+	struct nvkm_engine *engine = NULL;
+	struct nvkm_fifo_chan *chan;
+	unsigned long flags;
+	char ct[8] = "HUB/", en[16] = "";
+	int engn;
+
+	er = nvkm_enum_find(fifo->func->fault.reason, info->reason);
+	ee = nvkm_enum_find(fifo->func->fault.engine, info->engine);
+	if (info->hub) {
+		ec = nvkm_enum_find(fifo->func->fault.hubclient, info->client);
+	} else {
+		ec = nvkm_enum_find(fifo->func->fault.gpcclient, info->client);
+		snprintf(ct, sizeof(ct), "GPC%d/", info->gpc);
+	}
+	ea = nvkm_enum_find(fifo->func->fault.access, info->access);
+
+	if (ee && ee->data2) {
+		switch (ee->data2) {
+		case NVKM_SUBDEV_BAR:
+			nvkm_mask(device, 0x001704, 0x00000000, 0x00000000);
+			break;
+		case NVKM_SUBDEV_INSTMEM:
+			nvkm_mask(device, 0x001714, 0x00000000, 0x00000000);
+			break;
+		case NVKM_ENGINE_IFB:
+			nvkm_mask(device, 0x001718, 0x00000000, 0x00000000);
+			break;
+		default:
+			engine = nvkm_device_engine(device, ee->data2);
+			break;
+		}
+	}
+
+	if (ee == NULL) {
+		enum nvkm_devidx engidx = nvkm_top_fault(device, info->engine);
+		if (engidx < NVKM_SUBDEV_NR) {
+			const char *src = nvkm_subdev_name[engidx];
+			char *dst = en;
+			do {
+				*dst++ = toupper(*src++);
+			} while(*src);
+			engine = nvkm_device_engine(device, engidx);
+		}
+	} else {
+		snprintf(en, sizeof(en), "%s", ee->name);
+	}
+
+	spin_lock_irqsave(&fifo->base.lock, flags);
+	chan = nvkm_fifo_chan_inst_locked(&fifo->base, info->inst);
+
+	nvkm_error(subdev,
+		   "fault %02x [%s] at %016llx engine %02x [%s] client %02x "
+		   "[%s%s] reason %02x [%s] on channel %d [%010llx %s]\n",
+		   info->access, ea ? ea->name : "", info->addr,
+		   info->engine, ee ? ee->name : en,
+		   info->client, ct, ec ? ec->name : "",
+		   info->reason, er ? er->name : "", chan ? chan->chid : -1,
+		   info->inst, chan ? chan->object.client->name : "unknown");
+
+	/* Kill the channel that caused the fault. */
+	if (chan)
+		gk104_fifo_recover_chan(&fifo->base, chan->chid);
+
+	/* Channel recovery will probably have already done this for the
+	 * correct engine(s), but just in case we can't find the channel
+	 * information...
+	 */
+	for (engn = 0; engn < fifo->engine_nr && engine; engn++) {
+		if (fifo->engine[engn].engine == engine) {
+			gk104_fifo_recover_engn(fifo, engn);
+			break;
+		}
+	}
+
+	spin_unlock_irqrestore(&fifo->base.lock, flags);
+}
+
 static const struct nvkm_enum
 gk104_fifo_bind_reason[] = {
 	{ 0x01, "BIND_NOT_UNBOUND" },
@@ -456,88 +541,21 @@ gk104_fifo_intr_fault(struct gk104_fifo *fifo, int unit)
 	u32 inst = nvkm_rd32(device, 0x002800 + (unit * 0x10));
 	u32 valo = nvkm_rd32(device, 0x002804 + (unit * 0x10));
 	u32 vahi = nvkm_rd32(device, 0x002808 + (unit * 0x10));
-	u32 stat = nvkm_rd32(device, 0x00280c + (unit * 0x10));
-	u32 gpc    = (stat & 0x1f000000) >> 24;
-	u32 client = (stat & 0x00001f00) >> 8;
-	u32 write  = (stat & 0x00000080);
-	u32 hub    = (stat & 0x00000040);
-	u32 reason = (stat & 0x0000000f);
-	const struct nvkm_enum *er, *eu, *ec;
-	struct nvkm_engine *engine = NULL;
-	struct nvkm_fifo_chan *chan;
-	unsigned long flags;
-	char gpcid[8] = "", en[16] = "";
-	int engn;
-
-	er = nvkm_enum_find(fifo->func->fault.reason, reason);
-	eu = nvkm_enum_find(fifo->func->fault.engine, unit);
-	if (hub) {
-		ec = nvkm_enum_find(fifo->func->fault.hubclient, client);
-	} else {
-		ec = nvkm_enum_find(fifo->func->fault.gpcclient, client);
-		snprintf(gpcid, sizeof(gpcid), "GPC%d/", gpc);
-	}
-
-	if (eu && eu->data2) {
-		switch (eu->data2) {
-		case NVKM_SUBDEV_BAR:
-			nvkm_mask(device, 0x001704, 0x00000000, 0x00000000);
-			break;
-		case NVKM_SUBDEV_INSTMEM:
-			nvkm_mask(device, 0x001714, 0x00000000, 0x00000000);
-			break;
-		case NVKM_ENGINE_IFB:
-			nvkm_mask(device, 0x001718, 0x00000000, 0x00000000);
-			break;
-		default:
-			engine = nvkm_device_engine(device, eu->data2);
-			break;
-		}
-	}
-
-	if (eu == NULL) {
-		enum nvkm_devidx engidx = nvkm_top_fault(device, unit);
-		if (engidx < NVKM_SUBDEV_NR) {
-			const char *src = nvkm_subdev_name[engidx];
-			char *dst = en;
-			do {
-				*dst++ = toupper(*src++);
-			} while(*src);
-			engine = nvkm_device_engine(device, engidx);
-		}
-	} else {
-		snprintf(en, sizeof(en), "%s", eu->name);
-	}
-
-	spin_lock_irqsave(&fifo->base.lock, flags);
-	chan = nvkm_fifo_chan_inst_locked(&fifo->base, (u64)inst << 12);
-
-	nvkm_error(subdev,
-		   "%s fault at %010llx engine %02x [%s] client %02x [%s%s] "
-		   "reason %02x [%s] on channel %d [%010llx %s]\n",
-		   write ? "write" : "read", (u64)vahi << 32 | valo,
-		   unit, en, client, gpcid, ec ? ec->name : "",
-		   reason, er ? er->name : "", chan ? chan->chid : -1,
-		   (u64)inst << 12,
-		   chan ? chan->object.client->name : "unknown");
-
-
-	/* Kill the channel that caused the fault. */
-	if (chan)
-		gk104_fifo_recover_chan(&fifo->base, chan->chid);
-
-	/* Channel recovery will probably have already done this for the
-	 * correct engine(s), but just in case we can't find the channel
-	 * information...
-	 */
-	for (engn = 0; engn < fifo->engine_nr && engine; engn++) {
-		if (fifo->engine[engn].engine == engine) {
-			gk104_fifo_recover_engn(fifo, engn);
-			break;
-		}
-	}
-
-	spin_unlock_irqrestore(&fifo->base.lock, flags);
+	u32 type = nvkm_rd32(device, 0x00280c + (unit * 0x10));
+	struct nvkm_fault_data info;
+
+	info.inst   =  (u64)inst << 12;
+	info.addr   = ((u64)vahi << 32) | valo;
+	info.time   = 0;
+	info.engine = unit;
+	info.valid  = 1;
+	info.gpc    = (type & 0x1f000000) >> 24;
+	info.client = (type & 0x00001f00) >> 8;
+	info.access = (type & 0x00000080) >> 7;
+	info.hub    = (type & 0x00000040) >> 6;
+	info.reason = (type & 0x000000ff);
+
+	nvkm_fifo_fault(&fifo->base, &info);
 }
 
 static const struct nvkm_bitfield gk104_fifo_pbdma_intr_0[] = {
@@ -897,6 +915,7 @@ gk104_fifo_ = {
 	.init = gk104_fifo_init,
 	.fini = gk104_fifo_fini,
 	.intr = gk104_fifo_intr,
+	.fault = gk104_fifo_fault,
 	.uevent_init = gk104_fifo_uevent_init,
 	.uevent_fini = gk104_fifo_uevent_fini,
 	.recover_chan = gk104_fifo_recover_chan,
@@ -918,6 +937,13 @@ gk104_fifo_new_(const struct gk104_fifo_func *func, struct nvkm_device *device,
 	return nvkm_fifo_ctor(&gk104_fifo_, device, index, nr, &fifo->base);
 }
 
+const struct nvkm_enum
+gk104_fifo_fault_access[] = {
+	{ 0x0, "READ" },
+	{ 0x1, "WRITE" },
+	{}
+};
+
 const struct nvkm_enum
 gk104_fifo_fault_engine[] = {
 	{ 0x00, "GR", NULL, NVKM_ENGINE_GR },
@@ -1035,6 +1061,7 @@ gk104_fifo_fault_gpcclient[] = {
 
 static const struct gk104_fifo_func
 gk104_fifo = {
+	.fault.access = gk104_fifo_fault_access,
 	.fault.engine = gk104_fifo_fault_engine,
 	.fault.reason = gk104_fifo_fault_reason,
 	.fault.hubclient = gk104_fifo_fault_hubclient,
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gk104.h b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gk104.h
index 1579785cf941..0e8b57275e9d 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gk104.h
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gk104.h
@@ -44,6 +44,7 @@ struct gk104_fifo {
 
 struct gk104_fifo_func {
 	struct {
+		const struct nvkm_enum *access;
 		const struct nvkm_enum *engine;
 		const struct nvkm_enum *reason;
 		const struct nvkm_enum *hubclient;
@@ -59,25 +60,7 @@ void gk104_fifo_runlist_insert(struct gk104_fifo *, struct gk104_fifo_chan *);
 void gk104_fifo_runlist_remove(struct gk104_fifo *, struct gk104_fifo_chan *);
 void gk104_fifo_runlist_commit(struct gk104_fifo *, int runl);
 
-static inline u64
-gk104_fifo_engine_subdev(int engine)
-{
-	switch (engine) {
-	case 0: return (1ULL << NVKM_ENGINE_GR) |
-		       (1ULL << NVKM_ENGINE_SW) |
-		       (1ULL << NVKM_ENGINE_CE2);
-	case 1: return (1ULL << NVKM_ENGINE_MSPDEC);
-	case 2: return (1ULL << NVKM_ENGINE_MSPPP);
-	case 3: return (1ULL << NVKM_ENGINE_MSVLD);
-	case 4: return (1ULL << NVKM_ENGINE_CE0);
-	case 5: return (1ULL << NVKM_ENGINE_CE1);
-	case 6: return (1ULL << NVKM_ENGINE_MSENC);
-	default:
-		WARN_ON(1);
-		return 0;
-	}
-}
-
+extern const struct nvkm_enum gk104_fifo_fault_access[];
 extern const struct nvkm_enum gk104_fifo_fault_engine[];
 extern const struct nvkm_enum gk104_fifo_fault_reason[];
 extern const struct nvkm_enum gk104_fifo_fault_hubclient[];
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gk110.c b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gk110.c
index b2f8ab7bf847..ad792b6830e5 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gk110.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gk110.c
@@ -26,6 +26,7 @@
 
 static const struct gk104_fifo_func
 gk110_fifo = {
+	.fault.access = gk104_fifo_fault_access,
 	.fault.engine = gk104_fifo_fault_engine,
 	.fault.reason = gk104_fifo_fault_reason,
 	.fault.hubclient = gk104_fifo_fault_hubclient,
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gk208.c b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gk208.c
index 160617d376e4..5402d22462e8 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gk208.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gk208.c
@@ -26,6 +26,7 @@
 
 static const struct gk104_fifo_func
 gk208_fifo = {
+	.fault.access = gk104_fifo_fault_access,
 	.fault.engine = gk104_fifo_fault_engine,
 	.fault.reason = gk104_fifo_fault_reason,
 	.fault.hubclient = gk104_fifo_fault_hubclient,
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gk20a.c b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gk20a.c
index be9f5c16ed7d..0d7f9f59f80c 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gk20a.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gk20a.c
@@ -24,6 +24,7 @@
 
 static const struct gk104_fifo_func
 gk20a_fifo = {
+	.fault.access = gk104_fifo_fault_access,
 	.fault.engine = gk104_fifo_fault_engine,
 	.fault.reason = gk104_fifo_fault_reason,
 	.fault.hubclient = gk104_fifo_fault_hubclient,
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gm107.c b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gm107.c
index 29c080683b32..58a46ee5ee44 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gm107.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gm107.c
@@ -49,6 +49,7 @@ gm107_fifo_fault_engine[] = {
 
 static const struct gk104_fifo_func
 gm107_fifo = {
+	.fault.access = gk104_fifo_fault_access,
 	.fault.engine = gm107_fifo_fault_engine,
 	.fault.reason = gk104_fifo_fault_reason,
 	.fault.hubclient = gk104_fifo_fault_hubclient,
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gm200.c b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gm200.c
index b069f785c5d8..f84d5398aebe 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gm200.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gm200.c
@@ -26,6 +26,7 @@
 
 static const struct gk104_fifo_func
 gm200_fifo = {
+	.fault.access = gk104_fifo_fault_access,
 	.fault.engine = gm107_fifo_fault_engine,
 	.fault.reason = gk104_fifo_fault_reason,
 	.fault.hubclient = gk104_fifo_fault_hubclient,
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gm20b.c b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gm20b.c
index 2ed87c2e8299..66399b9572a6 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gm20b.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gm20b.c
@@ -24,6 +24,7 @@
 
 static const struct gk104_fifo_func
 gm20b_fifo = {
+	.fault.access = gk104_fifo_fault_access,
 	.fault.engine = gm107_fifo_fault_engine,
 	.fault.reason = gk104_fifo_fault_reason,
 	.fault.hubclient = gk104_fifo_fault_hubclient,
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gp100.c b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gp100.c
index 41f16cf5a918..2b8a6cff7a68 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gp100.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gp100.c
@@ -50,6 +50,7 @@ gp100_fifo_fault_engine[] = {
 
 static const struct gk104_fifo_func
 gp100_fifo = {
+	.fault.access = gk104_fifo_fault_access,
 	.fault.engine = gp100_fifo_fault_engine,
 	.fault.reason = gk104_fifo_fault_reason,
 	.fault.hubclient = gk104_fifo_fault_hubclient,
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gp10b.c b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gp10b.c
index 4af96c3e69ff..71b8d93b4368 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gp10b.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gp10b.c
@@ -24,6 +24,7 @@
 
 static const struct gk104_fifo_func
 gp10b_fifo = {
+	.fault.access = gk104_fifo_fault_access,
 	.fault.engine = gp100_fifo_fault_engine,
 	.fault.reason = gk104_fifo_fault_reason,
 	.fault.hubclient = gk104_fifo_fault_hubclient,
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/priv.h b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/priv.h
index ae76b1aaccd4..df74b54773b9 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/priv.h
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/priv.h
@@ -21,6 +21,7 @@ struct nvkm_fifo_func {
 	void (*init)(struct nvkm_fifo *);
 	void (*fini)(struct nvkm_fifo *);
 	void (*intr)(struct nvkm_fifo *);
+	void (*fault)(struct nvkm_fifo *, struct nvkm_fault_data *);
 	void (*pause)(struct nvkm_fifo *, unsigned long *);
 	void (*start)(struct nvkm_fifo *, unsigned long *);
 	void (*uevent_init)(struct nvkm_fifo *);
-- 
cgit 


From 8b811951c604e417b4511e3d17a75bb8c84b8f08 Mon Sep 17 00:00:00 2001
From: Ben Skeggs <bskeggs@redhat.com>
Date: Tue, 8 May 2018 20:39:47 +1000
Subject: drm/nouveau/fault/gv100: initial support

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
---
 .../gpu/drm/nouveau/include/nvkm/subdev/fault.h    |   6 +-
 drivers/gpu/drm/nouveau/nvkm/engine/device/base.c  |   1 +
 drivers/gpu/drm/nouveau/nvkm/subdev/fault/Kbuild   |   1 +
 drivers/gpu/drm/nouveau/nvkm/subdev/fault/gv100.c  | 206 +++++++++++++++++++++
 4 files changed, 213 insertions(+), 1 deletion(-)
 create mode 100644 drivers/gpu/drm/nouveau/nvkm/subdev/fault/gv100.c

(limited to 'drivers/gpu/drm/nouveau/include/nvkm/subdev/fault.h')

diff --git a/drivers/gpu/drm/nouveau/include/nvkm/subdev/fault.h b/drivers/gpu/drm/nouveau/include/nvkm/subdev/fault.h
index 8e9bc30fe65d..5a77498fe6a0 100644
--- a/drivers/gpu/drm/nouveau/include/nvkm/subdev/fault.h
+++ b/drivers/gpu/drm/nouveau/include/nvkm/subdev/fault.h
@@ -1,15 +1,18 @@
 #ifndef __NVKM_FAULT_H__
 #define __NVKM_FAULT_H__
 #include <core/subdev.h>
+#include <core/notify.h>
 
 struct nvkm_fault {
 	const struct nvkm_fault_func *func;
 	struct nvkm_subdev subdev;
 
-	struct nvkm_fault_buffer *buffer[1];
+	struct nvkm_fault_buffer *buffer[2];
 	int buffer_nr;
 
 	struct nvkm_event event;
+
+	struct nvkm_notify nrpfb;
 };
 
 struct nvkm_fault_data {
@@ -26,4 +29,5 @@ struct nvkm_fault_data {
 };
 
 int gp100_fault_new(struct nvkm_device *, int, struct nvkm_fault **);
+int gv100_fault_new(struct nvkm_device *, int, struct nvkm_fault **);
 #endif
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/device/base.c b/drivers/gpu/drm/nouveau/nvkm/engine/device/base.c
index 6aaa3d9cb88c..7f0385dbed06 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/device/base.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/device/base.c
@@ -2401,6 +2401,7 @@ nv140_chipset = {
 	.bios = nvkm_bios_new,
 	.bus = gf100_bus_new,
 	.devinit = gv100_devinit_new,
+	.fault = gv100_fault_new,
 	.fb = gv100_fb_new,
 	.fuse = gm107_fuse_new,
 	.gpio = gk104_gpio_new,
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/fault/Kbuild b/drivers/gpu/drm/nouveau/nvkm/subdev/fault/Kbuild
index 807ea402a162..45bb46fb0929 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/fault/Kbuild
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/fault/Kbuild
@@ -1,2 +1,3 @@
 nvkm-y += nvkm/subdev/fault/base.o
 nvkm-y += nvkm/subdev/fault/gp100.o
+nvkm-y += nvkm/subdev/fault/gv100.o
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/fault/gv100.c b/drivers/gpu/drm/nouveau/nvkm/subdev/fault/gv100.c
new file mode 100644
index 000000000000..73c7728b5969
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/fault/gv100.c
@@ -0,0 +1,206 @@
+/*
+ * 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/mmu.h>
+#include <engine/fifo.h>
+
+static void
+gv100_fault_buffer_process(struct nvkm_fault_buffer *buffer)
+{
+	struct nvkm_device *device = buffer->fault->subdev.device;
+	struct nvkm_memory *mem = buffer->mem;
+	const u32 foff = buffer->id * 0x14;
+	u32 get = nvkm_rd32(device, 0x100e2c + foff);
+	u32 put = nvkm_rd32(device, 0x100e30 + foff);
+	if (put == get)
+		return;
+
+	nvkm_kmap(mem);
+	while (get != put) {
+		const u32   base = get * buffer->fault->func->buffer.entry_size;
+		const u32 instlo = nvkm_ro32(mem, base + 0x00);
+		const u32 insthi = nvkm_ro32(mem, base + 0x04);
+		const u32 addrlo = nvkm_ro32(mem, base + 0x08);
+		const u32 addrhi = nvkm_ro32(mem, base + 0x0c);
+		const u32 timelo = nvkm_ro32(mem, base + 0x10);
+		const u32 timehi = nvkm_ro32(mem, base + 0x14);
+		const u32  info0 = nvkm_ro32(mem, base + 0x18);
+		const u32  info1 = nvkm_ro32(mem, base + 0x1c);
+		struct nvkm_fault_data info;
+
+		if (++get == buffer->entries)
+			get = 0;
+		nvkm_wr32(device, 0x100e2c + foff, get);
+
+		info.addr   = ((u64)addrhi << 32) | addrlo;
+		info.inst   = ((u64)insthi << 32) | instlo;
+		info.time   = ((u64)timehi << 32) | timelo;
+		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_done(mem);
+}
+
+static void
+gv100_fault_buffer_fini(struct nvkm_fault_buffer *buffer)
+{
+	struct nvkm_device *device = buffer->fault->subdev.device;
+	const u32 intr = buffer->id ? 0x08000000 : 0x20000000;
+	const u32 foff = buffer->id * 0x14;
+
+	nvkm_mask(device, 0x100a34, intr, intr);
+	nvkm_mask(device, 0x100e34 + foff, 0x80000000, 0x00000000);
+}
+
+static void
+gv100_fault_buffer_init(struct nvkm_fault_buffer *buffer)
+{
+	struct nvkm_device *device = buffer->fault->subdev.device;
+	const u32 intr = buffer->id ? 0x08000000 : 0x20000000;
+	const u32 foff = buffer->id * 0x14;
+
+	nvkm_mask(device, 0x100e34 + foff, 0xc0000000, 0x40000000);
+	nvkm_wr32(device, 0x100e28 + foff, upper_32_bits(buffer->vma->addr));
+	nvkm_wr32(device, 0x100e24 + foff, lower_32_bits(buffer->vma->addr));
+	nvkm_mask(device, 0x100e34 + foff, 0x80000000, 0x80000000);
+	nvkm_mask(device, 0x100a2c, intr, intr);
+}
+
+static u32
+gv100_fault_buffer_entries(struct nvkm_fault_buffer *buffer)
+{
+	struct nvkm_device *device = buffer->fault->subdev.device;
+	const u32 foff = buffer->id * 0x14;
+	nvkm_mask(device, 0x100e34 + foff, 0x40000000, 0x40000000);
+	return nvkm_rd32(device, 0x100e34 + foff) & 0x000fffff;
+}
+
+static int
+gv100_fault_ntfy_nrpfb(struct nvkm_notify *notify)
+{
+	struct nvkm_fault *fault = container_of(notify, typeof(*fault), nrpfb);
+	gv100_fault_buffer_process(fault->buffer[0]);
+	return NVKM_NOTIFY_KEEP;
+}
+
+static void
+gv100_fault_intr_fault(struct nvkm_fault *fault)
+{
+	struct nvkm_subdev *subdev = &fault->subdev;
+	struct nvkm_device *device = subdev->device;
+	struct nvkm_fault_data info;
+	const u32 addrlo = nvkm_rd32(device, 0x100e4c);
+	const u32 addrhi = nvkm_rd32(device, 0x100e50);
+	const u32  info0 = nvkm_rd32(device, 0x100e54);
+	const u32 insthi = nvkm_rd32(device, 0x100e58);
+	const u32  info1 = nvkm_rd32(device, 0x100e5c);
+
+	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);
+}
+
+static void
+gv100_fault_intr(struct nvkm_fault *fault)
+{
+	struct nvkm_subdev *subdev = &fault->subdev;
+	struct nvkm_device *device = subdev->device;
+	u32 stat = nvkm_rd32(device, 0x100a20);
+
+	if (stat & 0x80000000) {
+		gv100_fault_intr_fault(fault);
+		nvkm_wr32(device, 0x100e60, 0x80000000);
+		stat &= ~0x80000000;
+	}
+
+	if (stat & 0x20000000) {
+		if (fault->buffer[0]) {
+			nvkm_event_send(&fault->event, 1, 0, NULL, 0);
+			stat &= ~0x20000000;
+		}
+	}
+
+	if (stat) {
+		nvkm_debug(subdev, "intr %08x\n", stat);
+	}
+}
+
+static void
+gv100_fault_fini(struct nvkm_fault *fault)
+{
+	nvkm_notify_put(&fault->nrpfb);
+	nvkm_mask(fault->subdev.device, 0x100a34, 0x80000000, 0x80000000);
+}
+
+static void
+gv100_fault_init(struct nvkm_fault *fault)
+{
+	nvkm_mask(fault->subdev.device, 0x100a2c, 0x80000000, 0x80000000);
+	nvkm_notify_get(&fault->nrpfb);
+}
+
+static const struct nvkm_fault_func
+gv100_fault = {
+	.init = gv100_fault_init,
+	.fini = gv100_fault_fini,
+	.intr = gv100_fault_intr,
+	.buffer.nr = 2,
+	.buffer.entry_size = 32,
+	.buffer.entries = gv100_fault_buffer_entries,
+	.buffer.init = gv100_fault_buffer_init,
+	.buffer.fini = gv100_fault_buffer_fini,
+};
+
+int
+gv100_fault_new(struct nvkm_device *device, int index,
+		struct nvkm_fault **pfault)
+{
+	struct nvkm_fault *fault;
+	int ret;
+
+	ret = nvkm_fault_new_(&gv100_fault, device, index, &fault);
+	*pfault = fault;
+	if (ret)
+		return ret;
+
+	return nvkm_notify_init(&fault->buffer[0]->object, &fault->event,
+				gv100_fault_ntfy_nrpfb, false, NULL, 0, 0,
+				&fault->nrpfb);
+}
-- 
cgit