drivers: qcom: Add LLCC driver for Direwolf platform (62d5c1cb) · Commits · e / devices / android_kernel_fairphone_FP5

drivers/soc/qcom/Kconfig

+9 −0

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		@@ -248,6 +248,15 @@ config QCOM_LLCC_PERFMON
		interface. sysfs interface is used to configure and dump the LLCC
		performance events.

		config QCOM_DIREWOLF_LLCC
		tristate "Qualcomm Technologies, Inc. Direwolf LLCC driver"
		depends on QCOM_LLCC
		help
		Say y or m here to enable the LLCC driver for Direwolf platform.
		This provides data required to configure LLCC so that clients
		can start using the LLCC slices.
		If unsure, say n.

		config QCOM_MDT_LOADER
		tristate
		select QCOM_SCM

drivers/soc/qcom/Makefile

+1 −0

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		@@ -52,6 +52,7 @@ obj-$(CONFIG_QCOM_YUPIK_LLCC) += llcc-yupik.o
		obj-$(CONFIG_QCOM_SM8150_LLCC) += llcc-sm8150.o
		obj-$(CONFIG_QCOM_SDMSHRIKE_LLCC) += llcc-sdmshrike.o
		obj-$(CONFIG_QCOM_SM6150_LLCC) += llcc-sm6150.o
		obj-$(CONFIG_QCOM_DIREWOLF_LLCC) += llcc-direwolf.o
		obj-$(CONFIG_QCOM_MINIDUMP) += msm_minidump.o minidump_log.o
		obj-$(CONFIG_QCOM_MEM_OFFLINE) += mem-offline.o
		obj-$(CONFIG_QCOM_MEM_BUF) += mem-buf.o mem_buf_dma_buf.o

drivers/soc/qcom/llcc-direwolf.c

0 → 100644

+94 −0

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		// SPDX-License-Identifier: GPL-2.0-only
		/*
		* Copyright (c) 2021, The Linux Foundation. All rights reserved.
		*
		*/

		#include <linux/kernel.h>
		#include <linux/module.h>
		#include <linux/of.h>
		#include <linux/platform_device.h>
		#include <linux/soc/qcom/llcc-qcom.h>

		/*
		* SCT entry contains of the following parameters
		* uid: Unique id for the client's use case
		* slice_id: llcc slice id for each client
		* max_cap: The maximum capacity of the cache slice provided in KB
		* priority: Priority of the client used to select victim line for replacement
		* fixed_size: Determine of the slice has a fixed capacity
		* bonus_ways: Bonus ways to be used by any slice, bonus way is used only if
		* it't not a reserved way.
		* res_ways: Reserved ways for the cache slice, the reserved ways cannot be used
		* by any other client than the one its assigned to.
		* cache_mode: Each slice operates as a cache, this controls the mode of the
		* slice normal or TCM
		* probe_target_ways: Determines what ways to probe for access hit. When
		* configured to 1 only bonus and reserved ways are probed.
		* when configured to 0 all ways in llcc are probed.
		* dis_cap_alloc: Disable capacity based allocation for a client
		* write_scid_en: Bit enables write cache support for a given scid.
		* retain_on_pc: If this bit is set and client has maitained active vote
		* then the ways assigned to this client are not flushed on power
		* collapse.
		* activate_on_init: Activate the slice immidiately after the SCT is programmed
		*/
		#define SCT_ENTRY(uid, sid, mc, p, fs, bway, rway, cmod, ptw, dca, wse, rp, a) \
		{ \
		.usecase_id = uid, \
		.slice_id = sid, \
		.max_cap = mc, \
		.priority = p, \
		.fixed_size = fs, \
		.bonus_ways = bway, \
		.res_ways = rway, \
		.cache_mode = cmod, \
		.probe_target_ways = ptw, \
		.dis_cap_alloc = dca, \
		.write_scid_en = wse, \
		.retain_on_pc = rp, \
		.activate_on_init = a, \
		}

		static struct llcc_slice_config direwolf_data[] = {
		SCT_ENTRY(LLCC_CPUSS, 1, 6144, 1, 1, 0xFFF, 0x0, 0, 0, 0, 0, 1, 1),
		SCT_ENTRY(LLCC_VIDSC0, 2, 512, 3, 1, 0xFFF, 0x0, 0, 0, 0, 0, 1, 0),
		SCT_ENTRY(LLCC_AUDIO, 6, 1024, 1, 1, 0xFFF, 0x0, 0, 0, 0, 0, 0, 0),
		SCT_ENTRY(LLCC_CMPT, 10, 6144, 1, 1, 0xFFF, 0x0, 0, 0, 0, 0, 0, 0),
		SCT_ENTRY(LLCC_GPUHTW, 11, 1024, 1, 1, 0xFFF, 0x0, 0, 0, 0, 0, 1, 0),
		SCT_ENTRY(LLCC_GPU, 12, 4608, 1, 0, 0xFFF, 0x0, 0, 0, 0, 1, 1, 0),
		SCT_ENTRY(LLCC_MMUHWT, 13, 1024, 1, 1, 0xFFF, 0x0, 0, 0, 0, 0, 0, 1),
		SCT_ENTRY(LLCC_DISP, 16, 6144, 1, 1, 0xFFF, 0x0, 0, 0, 0, 0, 1, 0),
		SCT_ENTRY(LLCC_AUDHW, 22, 2048, 1, 1, 0xFFF, 0x0, 0, 0, 0, 0, 1, 0),
		SCT_ENTRY(LLCC_DRE, 26, 1024, 1, 1, 0xFFF, 0x0, 0, 0, 0, 0, 1, 0),
		SCT_ENTRY(LLCC_CVP, 28, 512, 3, 1, 0xFFF, 0x0, 0, 0, 0, 0, 1, 0),
		SCT_ENTRY(LLCC_APTCM, 30, 1024, 3, 1, 0x0, 0x1, 1, 0, 0, 0, 1, 0),
		SCT_ENTRY(LLCC_WRTCH, 31, 512, 1, 1, 0xFFF, 0x0, 0, 0, 0, 0, 0, 1),
		SCT_ENTRY(LLCC_CVPFW, 17, 512, 1, 0, 0xFFF, 0x0, 0, 0, 0, 0, 1, 0),
		SCT_ENTRY(LLCC_CPUSS1, 3, 2048, 1, 1, 0xFFF, 0x0, 0, 0, 0, 0, 1, 0),
		SCT_ENTRY(LLCC_CMPT1, 14, 6144, 1, 1, 0xFFF, 0x0, 0, 0, 0, 0, 0, 0),
		SCT_ENTRY(LLCC_CPUHWT, 5, 512, 1, 1, 0xFFF, 0x0, 0, 0, 0, 0, 0, 1),
		};

		static int direwolf_qcom_llcc_probe(struct platform_device *pdev)
		{
		return qcom_llcc_probe(pdev, direwolf_data,
		ARRAY_SIZE(direwolf_data));
		}

		static const struct of_device_id direwolf_qcom_llcc_of_match[] = {
		{ .compatible = "qcom,direwolf-llcc" },
		{ },
		};

		static struct platform_driver direwolf_qcom_llcc_driver = {
		.driver = {
		.name = "direwolf-llcc",
		.of_match_table = direwolf_qcom_llcc_of_match,
		},
		.probe = direwolf_qcom_llcc_probe,
		};
		module_platform_driver(direwolf_qcom_llcc_driver);

		MODULE_DESCRIPTION("QCOM Direwolf LLCC driver");
		MODULE_LICENSE("GPL v2");

include/linux/soc/qcom/llcc-qcom.h

+3 −1

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		/* SPDX-License-Identifier: GPL-2.0 */
		/*
		* Copyright (c) 2017-2020, The Linux Foundation. All rights reserved.
		* Copyright (c) 2017-2021, The Linux Foundation. All rights reserved.
		*
		*/

		@@ -30,12 +30,14 @@
		#define LLCC_NPU 23
		#define LLCC_WLNHW 24
		#define LLCC_PIMEM 25
		#define LLCC_DRE 26
		#define LLCC_CVP 28
		#define LLCC_MDMVPE 29
		#define LLCC_APTCM 30
		#define LLCC_WRTCH 31
		#define LLCC_CVPFW 32
		#define LLCC_CPUSS1 33
		#define LLCC_CMPT1 34
		#define LLCC_CPUHWT 36
		#define LLCC_MDMCLD2 37