1 /*
2  * Copyright 2023 Advanced Micro Devices, Inc.
3  *
4  * Permission is hereby granted, free of charge, to any person obtaining a
5  * copy of this software and associated documentation files (the "Software"),
6  * to deal in the Software without restriction, including without limitation
7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8  * and/or sell copies of the Software, and to permit persons to whom the
9  * Software is furnished to do so, subject to the following conditions:
10  *
11  * The above copyright notice and this permission notice shall be included in
12  * all copies or substantial portions of the Software.
13  *
14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20  * OTHER DEALINGS IN THE SOFTWARE.
21  *
22  */
23 
24 #include "amdgpu.h"
25 #include "soc21.h"
26 #include "gc/gc_11_0_3_offset.h"
27 #include "gc/gc_11_0_3_sh_mask.h"
28 #include "ivsrcid/gfx/irqsrcs_gfx_11_0_0.h"
29 #include "soc15.h"
30 #include "soc15d.h"
31 #include "gfx_v11_0.h"
32 
33 
gfx_v11_0_3_rlc_gc_fed_irq(struct amdgpu_device * adev,struct amdgpu_irq_src * source,struct amdgpu_iv_entry * entry)34 static int gfx_v11_0_3_rlc_gc_fed_irq(struct amdgpu_device *adev,
35 				  struct amdgpu_irq_src *source,
36 				  struct amdgpu_iv_entry *entry)
37 {
38 	uint32_t rlc_status0 = 0, rlc_status1 = 0;
39 	struct ras_common_if *ras_if = NULL;
40 	struct ras_dispatch_if ih_data = {
41 		.entry = entry,
42 	};
43 
44 	rlc_status0 = RREG32(SOC15_REG_OFFSET(GC, 0, regRLC_RLCS_FED_STATUS_0));
45 	rlc_status1 = RREG32(SOC15_REG_OFFSET(GC, 0, regRLC_RLCS_FED_STATUS_1));
46 
47 	if (!rlc_status0 && !rlc_status1) {
48 		dev_warn(adev->dev, "RLC_GC_FED irq is generated, but rlc_status0 and rlc_status1 are empty!\n");
49 		return 0;
50 	}
51 
52 	/* Use RLC_RLCS_FED_STATUS_0/1 to distinguish FED error block. */
53 	if (REG_GET_FIELD(rlc_status0, RLC_RLCS_FED_STATUS_0, SDMA0_FED_ERR) ||
54 	    REG_GET_FIELD(rlc_status0, RLC_RLCS_FED_STATUS_0, SDMA1_FED_ERR))
55 		ras_if = adev->sdma.ras_if;
56 	else
57 		ras_if = adev->gfx.ras_if;
58 
59 	if (!ras_if) {
60 		dev_err(adev->dev, "Gfx or sdma ras block not initialized, rlc_status0:0x%x.\n",
61 				rlc_status0);
62 		return -EINVAL;
63 	}
64 
65 	dev_warn(adev->dev, "RLC %s FED IRQ\n", ras_if->name);
66 
67 	if (!amdgpu_sriov_vf(adev)) {
68 		ih_data.head = *ras_if;
69 		amdgpu_ras_interrupt_dispatch(adev, &ih_data);
70 	} else {
71 		if (adev->virt.ops && adev->virt.ops->ras_poison_handler)
72 			adev->virt.ops->ras_poison_handler(adev);
73 		else
74 			dev_warn(adev->dev,
75 				"No ras_poison_handler interface in SRIOV for %s!\n", ras_if->name);
76 	}
77 
78 	return 0;
79 }
80 
gfx_v11_0_3_poison_consumption_handler(struct amdgpu_device * adev,struct amdgpu_iv_entry * entry)81 static int gfx_v11_0_3_poison_consumption_handler(struct amdgpu_device *adev,
82 					struct amdgpu_iv_entry *entry)
83 {
84 	/* Workaround: when vmid and pasid are both zero, trigger gpu reset in KGD. */
85 	if (entry && (entry->client_id == SOC21_IH_CLIENTID_GFX) &&
86 	    (entry->src_id == GFX_11_0_0__SRCID__RLC_GC_FED_INTERRUPT) &&
87 	     !entry->vmid && !entry->pasid) {
88 		uint32_t rlc_status0 = 0;
89 
90 		rlc_status0 = RREG32_SOC15(GC, 0, regRLC_RLCS_FED_STATUS_0);
91 
92 		if (REG_GET_FIELD(rlc_status0, RLC_RLCS_FED_STATUS_0, SDMA0_FED_ERR) ||
93 		    REG_GET_FIELD(rlc_status0, RLC_RLCS_FED_STATUS_0, SDMA1_FED_ERR)) {
94 			struct amdgpu_ras *ras = amdgpu_ras_get_context(adev);
95 
96 			ras->gpu_reset_flags |= AMDGPU_RAS_GPU_RESET_MODE2_RESET;
97 		}
98 
99 		amdgpu_ras_reset_gpu(adev);
100 	}
101 
102 	return 0;
103 }
104 
105 struct amdgpu_gfx_ras gfx_v11_0_3_ras = {
106 	.rlc_gc_fed_irq = gfx_v11_0_3_rlc_gc_fed_irq,
107 	.poison_consumption_handler = gfx_v11_0_3_poison_consumption_handler,
108 };
109