From: Alex Deucher <alexander.deucher@amd.com>
Date: Thu, 29 Mar 2018 14:39:28 -0500
Subject: drm/amdgpu/vi: implement asic need_full_reset callback
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Git-commit: 06082d9b711fd5889c5f182c6fa629891e5b48c3
Patch-mainline: v4.18-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166

Used to check on a per SoC basis whether the SoC needs
a full reset of a per IP soft reset.

Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
 drivers/gpu/drm/amd/amdgpu/vi.c |   22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

--- a/drivers/gpu/drm/amd/amdgpu/vi.c
+++ b/drivers/gpu/drm/amd/amdgpu/vi.c
@@ -876,6 +876,27 @@ static void vi_invalidate_hdp(struct amd
 	}
 }
 
+static bool vi_need_full_reset(struct amdgpu_device *adev)
+{
+	switch (adev->asic_type) {
+	case CHIP_CARRIZO:
+	case CHIP_STONEY:
+		/* CZ has hang issues with full reset at the moment */
+		return false;
+	case CHIP_FIJI:
+	case CHIP_TONGA:
+		/* XXX: soft reset should work on fiji and tonga */
+		return true;
+	case CHIP_POLARIS10:
+	case CHIP_POLARIS11:
+	case CHIP_POLARIS12:
+	case CHIP_TOPAZ:
+	default:
+		/* change this when we support soft reset */
+		return true;
+	}
+}
+
 static const struct amdgpu_asic_funcs vi_asic_funcs =
 {
 	.read_disabled_bios = &vi_read_disabled_bios,
@@ -889,6 +910,7 @@ static const struct amdgpu_asic_funcs vi
 	.get_config_memsize = &vi_get_config_memsize,
 	.flush_hdp = &vi_flush_hdp,
 	.invalidate_hdp = &vi_invalidate_hdp,
+	.need_full_reset = &vi_need_full_reset,
 };
 
 #define CZ_REV_BRISTOL(rev)	 \