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Commit a6e4cb81 authored by Akhil P Oommen's avatar Akhil P Oommen Committed by Pranav Patel
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msm: kgsl: Mark the scratch buffer as privileged 



Mark the scratch buffer as privileged so that it can only be accessed by
GPU through the ringbuffer. To accomplish this, we need to:

1. Disable the shadow rptr feature.
2. Trigger RPTR update from GPU using a WHERE_AM_I packet.
3. Add support for the new ucode.

Change-Id: I9b388f55f53b69028b9bbb2306cb43fd1297c52f
Signed-off-by: default avatarAkhil P Oommen <akhilpo@codeaurora.org>
Signed-off-by: default avatarPranav Patel <pranavp@codeaurora.org>
parent 4a1a4fb5

drivers/gpu/msm/adreno.c

+14 −1
Original line number Diff line number Diff line 
/* Copyright (c) 2002,2007-2019, The Linux Foundation. All rights reserved.

/* Copyright (c) 2002,2007-2020, The Linux Foundation. All rights reserved.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 and
@@ -2827,6 +2827,19 @@ static void adreno_resume_device(struct kgsl_device *device) 
	adreno_dispatcher_unhalt(device);

}



u32 adreno_get_ucode_version(const u32 *data)

{

	u32 version;



	version = data[1];



	if ((version & 0xf) != 0xa)

		return version;



	version &= ~0xfff;

	return  version | ((data[3] & 0xfff000) >> 12);

}



static const struct kgsl_functable adreno_functable = {

	/* Mandatory functions */

	.regread = adreno_regread,

drivers/gpu/msm/adreno.h

+3 −1
Original line number Diff line number Diff line 
/* Copyright (c) 2008-2018, The Linux Foundation. All rights reserved.

/* Copyright (c) 2008-2018,2020 The Linux Foundation. All rights reserved.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 and
@@ -942,6 +942,8 @@ int adreno_efuse_read_u32(struct adreno_device *adreno_dev, unsigned int offset, 
		unsigned int *val);

void adreno_efuse_unmap(struct adreno_device *adreno_dev);



u32 adreno_get_ucode_version(const u32 *data);



#define ADRENO_TARGET(_name, _id) \

static inline int adreno_is_##_name(struct adreno_device *adreno_dev) \

{ \

drivers/gpu/msm/adreno_a5xx.c

+9 −6
Original line number Diff line number Diff line 
/* Copyright (c) 2014-2018, The Linux Foundation. All rights reserved.

/* Copyright (c) 2014-2018,2020 The Linux Foundation. All rights reserved.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 and
@@ -2177,12 +2177,15 @@ static int a5xx_post_start(struct adreno_device *adreno_dev) 
		*cmds++ = 0xF;

	}



	if (adreno_is_preemption_enabled(adreno_dev))

	if (adreno_is_preemption_enabled(adreno_dev)) {

		cmds += _preemption_init(adreno_dev, rb, cmds, NULL);



		rb->_wptr = rb->_wptr - (42 - (cmds - start));



		ret = adreno_ringbuffer_submit_spin_nosync(rb, NULL, 2000);

	} else {

		rb->_wptr = rb->_wptr - (42 - (cmds - start));

		ret = adreno_ringbuffer_submit_spin(rb, NULL, 2000);

	}



	if (ret)

		spin_idle_debug(KGSL_DEVICE(adreno_dev),

				"hw initialization failed to idle\n");
@@ -2554,7 +2557,7 @@ static int _load_firmware(struct kgsl_device *device, const char *fwfile, 


	memcpy(ucode->hostptr, &fw->data[4], fw->size - 4);

	*ucode_size = (fw->size - 4) / sizeof(uint32_t);

	*ucode_version = *(unsigned int *)&fw->data[4];

	*ucode_version = adreno_get_ucode_version((u32 *)fw->data);



done:

	release_firmware(fw);

drivers/gpu/msm/adreno_a5xx.h

+2 −2
Original line number Diff line number Diff line 
/* Copyright (c) 2015-2016, The Linux Foundation. All rights reserved.

/* Copyright (c) 2015-2016,2020, The Linux Foundation. All rights reserved.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 and
@@ -112,7 +112,7 @@ void a5xx_crashdump_init(struct adreno_device *adreno_dev); 


void a5xx_hwcg_set(struct adreno_device *adreno_dev, bool on);



#define A5XX_CP_RB_CNTL_DEFAULT (((ilog2(4) << 8) & 0x1F00) | \

#define A5XX_CP_RB_CNTL_DEFAULT ((1 << 27) | ((ilog2(4) << 8) & 0x1F00) | \

		(ilog2(KGSL_RB_DWORDS >> 1) & 0x3F))

/* GPMU interrupt multiplexor */

#define FW_INTR_INFO			(0)

drivers/gpu/msm/adreno_pm4types.h

+3 −1
Original line number Diff line number Diff line 
/* Copyright (c) 2002,2007-2016, The Linux Foundation. All rights reserved.

/* Copyright (c) 2002,2007-2016,2020, The Linux Foundation. All rights reserved.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 and
@@ -97,6 +97,8 @@ 
/* A5XX Enable yield in RB only */

#define CP_YIELD_ENABLE 0x1C



#define CP_WHERE_AM_I 0x62



/* Enable/Disable/Defer A5x global preemption model */

#define CP_PREEMPT_ENABLE_GLOBAL    0x69