Commit 062666ff authored by Pratap Nirujogi's avatar Pratap Nirujogi Committed by Alex Deucher
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drm/amd/amdgpu: Disable MMHUB prefetch for ISP v4.1.1 



Disable MMHUB prefetch for ISP v4.1.1 as a temporary WA until
the GART supports MMHUB TLSi and SAW for ISP HW to access
GART memory using the TLSi path.

Reviewed-by: default avatarMario Limonciello <mario.limonciello@amd.com>
Signed-off-by: default avatarPratap Nirujogi <pratap.nirujogi@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 05bafe95

drivers/gpu/drm/amd/amdgpu/isp_v4_1_1.c

+12 −0
Original line number Diff line number Diff line
@@ -104,6 +104,18 @@ static int isp_v4_1_1_hw_init(struct amdgpu_isp *isp) 
		goto failure;

	}



	/*

	 * Temporary WA added to disable MMHUB TLSi until the GART initialization

	 * is ready to support MMHUB TLSi and SAW for ISP HW to access GART memory

	 * using the TLSi path

	 */

	WREG32(mmDAGB1_WRCLI5_V4_1_1 >> 2, 0xFE5FEAA8);

	WREG32(mmDAGB1_WRCLI9_V4_1_1 >> 2, 0xFE5FEAA8);

	WREG32(mmDAGB1_WRCLI10_V4_1_1 >> 2, 0xFE5FEAA8);

	WREG32(mmDAGB1_WRCLI14_V4_1_1 >> 2, 0xFE5FEAA8);

	WREG32(mmDAGB1_WRCLI19_V4_1_1 >> 2, 0xFE5FEAA8);

	WREG32(mmDAGB1_WRCLI20_V4_1_1 >> 2, 0xFE5FEAA8);



	return 0;



failure:

drivers/gpu/drm/amd/amdgpu/isp_v4_1_1.h

+7 −0
Original line number Diff line number Diff line
@@ -32,6 +32,13 @@ 


#include "ivsrcid/isp/irqsrcs_isp_4_1.h"



#define mmDAGB1_WRCLI5_V4_1_1   0x68420

#define mmDAGB1_WRCLI9_V4_1_1   0x68430

#define mmDAGB1_WRCLI10_V4_1_1  0x68434

#define mmDAGB1_WRCLI14_V4_1_1  0x68444

#define mmDAGB1_WRCLI19_V4_1_1  0x68458

#define mmDAGB1_WRCLI20_V4_1_1  0x6845C



#define MAX_ISP411_INT_SRC 8



void isp_v4_1_1_set_isp_funcs(struct amdgpu_isp *isp);