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      1 /*	$NetBSD: nouveau_nvkm_subdev_fault_gp100.c,v 1.2 2021/12/18 23:45:39 riastradh Exp $	*/
      2 
      3 /*
      4  * Copyright 2018 Red Hat Inc.
      5  *
      6  * Permission is hereby granted, free of charge, to any person obtaining a
      7  * copy of this software and associated documentation files (the "Software"),
      8  * to deal in the Software without restriction, including without limitation
      9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
     10  * and/or sell copies of the Software, and to permit persons to whom the
     11  * Software is furnished to do so, subject to the following conditions:
     12  *
     13  * The above copyright notice and this permission notice shall be included in
     14  * all copies or substantial portions of the Software.
     15  *
     16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     19  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
     20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
     21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
     22  * OTHER DEALINGS IN THE SOFTWARE.
     23  */
     24 #include <sys/cdefs.h>
     25 __KERNEL_RCSID(0, "$NetBSD: nouveau_nvkm_subdev_fault_gp100.c,v 1.2 2021/12/18 23:45:39 riastradh Exp $");
     26 
     27 #include "priv.h"
     28 
     29 #include <core/memory.h>
     30 #include <subdev/mc.h>
     31 
     32 #include <nvif/class.h>
     33 
     34 void
     35 gp100_fault_buffer_intr(struct nvkm_fault_buffer *buffer, bool enable)
     36 {
     37 	struct nvkm_device *device = buffer->fault->subdev.device;
     38 	nvkm_mc_intr_mask(device, NVKM_SUBDEV_FAULT, enable);
     39 }
     40 
     41 void
     42 gp100_fault_buffer_fini(struct nvkm_fault_buffer *buffer)
     43 {
     44 	struct nvkm_device *device = buffer->fault->subdev.device;
     45 	nvkm_mask(device, 0x002a70, 0x00000001, 0x00000000);
     46 }
     47 
     48 void
     49 gp100_fault_buffer_init(struct nvkm_fault_buffer *buffer)
     50 {
     51 	struct nvkm_device *device = buffer->fault->subdev.device;
     52 	nvkm_wr32(device, 0x002a74, upper_32_bits(buffer->addr));
     53 	nvkm_wr32(device, 0x002a70, lower_32_bits(buffer->addr));
     54 	nvkm_mask(device, 0x002a70, 0x00000001, 0x00000001);
     55 }
     56 
     57 u64 gp100_fault_buffer_pin(struct nvkm_fault_buffer *buffer)
     58 {
     59 	return nvkm_memory_bar2(buffer->mem);
     60 }
     61 
     62 void
     63 gp100_fault_buffer_info(struct nvkm_fault_buffer *buffer)
     64 {
     65 	buffer->entries = nvkm_rd32(buffer->fault->subdev.device, 0x002a78);
     66 	buffer->get = 0x002a7c;
     67 	buffer->put = 0x002a80;
     68 }
     69 
     70 void
     71 gp100_fault_intr(struct nvkm_fault *fault)
     72 {
     73 	nvkm_event_send(&fault->event, 1, 0, NULL, 0);
     74 }
     75 
     76 static const struct nvkm_fault_func
     77 gp100_fault = {
     78 	.intr = gp100_fault_intr,
     79 	.buffer.nr = 1,
     80 	.buffer.entry_size = 32,
     81 	.buffer.info = gp100_fault_buffer_info,
     82 	.buffer.pin = gp100_fault_buffer_pin,
     83 	.buffer.init = gp100_fault_buffer_init,
     84 	.buffer.fini = gp100_fault_buffer_fini,
     85 	.buffer.intr = gp100_fault_buffer_intr,
     86 	.user = { { 0, 0, MAXWELL_FAULT_BUFFER_A }, 0 },
     87 };
     88 
     89 int
     90 gp100_fault_new(struct nvkm_device *device, int index,
     91 		struct nvkm_fault **pfault)
     92 {
     93 	return nvkm_fault_new_(&gp100_fault, device, index, pfault);
     94 }
     95