Attachment 133074 Details for Bug 101946 – possible fix 1/2

[patch] possible fix 1/2

0001-drm-amdgpu-atom-add-a-helper-to-clear-asic_init-in-s.patch (text/plain), 2.02 KB, created by Alex Deucher on 2017-07-27 14:42:33 UTC

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Creator: Alex Deucher

Created: 2017-07-27 14:42:33 UTC

Size: 2.02 KB

patch

obsolete

>From 1c100b1e7f4f491322e742242e978bef6f580ad4 Mon Sep 17 00:00:00 2001
>From: Alex Deucher <alexander.deucher@amd.com>
>Date: Thu, 27 Jul 2017 09:23:49 -0400
>Subject: [PATCH 1/2] drm/amdgpu/atom: add a helper to clear asic_init in
> scratch reg
>
>Clears the asic_init completed bit in the bios scratch register
>so that the driver will run asic_init the next time it tries
>to load on the card.
>
>Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
>---
> drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c | 9 +++++++++
> drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.h | 1 +
> 2 files changed, 10 insertions(+)
>
>diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c
>index ce44358..32309ee 100644
>--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c
>+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c
>@@ -1766,6 +1766,15 @@ bool amdgpu_atombios_scratch_need_asic_init(struct amdgpu_device *adev)
> 		return true;
> }
> 
>+void amdgpu_atombios_scratch_force_asic_init(struct amdgpu_device *adev)
>+{
>+	u32 tmp = RREG32(adev->bios_scratch_reg_offset + 7);
>+
>+	tmp &= ~ATOM_S7_ASIC_INIT_COMPLETE_MASK;
>+
>+	WREG32(adev->bios_scratch_reg_offset + 7, tmp);
>+}
>+
> /* Atom needs data in little endian format
>  * so swap as appropriate when copying data to
>  * or from atom. Note that atom operates on
>diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.h
>index b0d5d1d..6204203 100644
>--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.h
>+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.h
>@@ -201,6 +201,7 @@ void amdgpu_atombios_scratch_regs_restore(struct amdgpu_device *adev);
> void amdgpu_atombios_scratch_regs_engine_hung(struct amdgpu_device *adev,
> 					      bool hung);
> bool amdgpu_atombios_scratch_need_asic_init(struct amdgpu_device *adev);
>+void amdgpu_atombios_scratch_force_asic_init(struct amdgpu_device *adev);
> 
> void amdgpu_atombios_copy_swap(u8 *dst, u8 *src, u8 num_bytes, bool to_le);
> int amdgpu_atombios_get_max_vddc(struct amdgpu_device *adev, u8 voltage_type,
>-- 
>2.5.5
>

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Attachments on bug 101946: 133068 | 133069 | 133070 | 133074 | 133075 | 133098 | 133099 | 133100 | 133101 | 133103 | 133108 | 133127 | 133132 | 133172 | 133173

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