801ff98205
Add support for sm6150-llcc driver. The driver is written by taking reference from sm6150-llcc driver in msm-4.14 kernel at commit id "5d390f121ba7". Change-Id: I53f200460e3b18dfe3453923745104f8e804b9c5 Signed-off-by: Saurabh Ambulkar <sambulka@codeaurora.org>
93 lines
3.3 KiB
C
93 lines
3.3 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (c) 2017-2018,2020 The Linux Foundation. All rights reserved.
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*
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/of.h>
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#include <linux/platform_device.h>
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#include <linux/soc/qcom/llcc-qcom.h>
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/*
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* SCT entry contains of the following parameters
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* name: Name of the client's use case for which the llcc slice is used
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* uid: Unique id for the client's use case
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* slice_id: llcc slice id for each client
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* max_cap: The maximum capacity of the cache slice provided in KB
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* priority: Priority of the client used to select victim line for replacement
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* fixed_size: Determine of the slice has a fixed capacity
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* bonus_ways: Bonus ways to be used by any slice, bonus way is used only if
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* it't not a reserved way.
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* res_ways: Reserved ways for the cache slice, the reserved ways cannot be used
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* by any other client than the one its assigned to.
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* cache_mode: Each slice operates as a cache, this controls the mode of the
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* slice normal or TCM
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* probe_target_ways: Determines what ways to probe for access hit. When
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* configured to 1 only bonus and reserved ways are probed.
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* when configured to 0 all ways in llcc are probed.
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* dis_cap_alloc: Disable capacity based allocation for a client
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* retain_on_pc: If this bit is set and client has maitained active vote
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* then the ways assigned to this client are not flushed on power
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* collapse.
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* activate_on_init: Activate the slice immidiately after the SCT is programmed
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*/
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#define SCT_ENTRY(uid, sid, mc, p, fs, bway, rway, cmod, ptw, dca, wse, rp, a) \
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{ .usecase_id = uid, \
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.slice_id = sid, \
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.max_cap = mc, \
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.priority = p, \
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.fixed_size = fs, \
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.bonus_ways = bway, \
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.res_ways = rway, \
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.cache_mode = cmod, \
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.probe_target_ways = ptw, \
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.dis_cap_alloc = dca, \
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.write_scid_en = wse, \
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.retain_on_pc = rp, \
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.activate_on_init = a, \
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}
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static struct llcc_slice_config sm6150_data[] = {
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SCT_ENTRY(LLCC_CPUSS, 1, 1, 128, 1, 0, 0xF, 0x0, 0, 0, 0, 1, 1),
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SCT_ENTRY(LLCC_MDM, 8, 8, 256, 0, 1, 0xF, 0x0, 0, 0, 0, 1, 0),
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SCT_ENTRY(LLCC_GPUHTW, 11, 11, 128, 1, 1, 0xF, 0x0, 0, 0, 0, 1, 0),
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SCT_ENTRY(LLCC_GPU, 12, 12, 128, 1, 0, 0xF, 0x0, 0, 0, 0, 1, 0),
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};
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static int sm6150_qcom_llcc_probe(struct platform_device *pdev)
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{
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return qcom_llcc_probe(pdev, sm6150_data,
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ARRAY_SIZE(sm6150_data));
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}
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static const struct of_device_id sm6150_qcom_llcc_of_match[] = {
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{ .compatible = "qcom,sm6150-llcc", },
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{ },
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};
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static struct platform_driver sm6150_qcom_llcc_driver = {
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.driver = {
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.name = "sm6150-llcc",
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.of_match_table = sm6150_qcom_llcc_of_match,
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},
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.probe = sm6150_qcom_llcc_probe,
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.remove = qcom_llcc_remove,
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};
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static int __init sm6150_init_qcom_llcc_init(void)
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{
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return platform_driver_register(&sm6150_qcom_llcc_driver);
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}
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module_init(sm6150_init_qcom_llcc_init);
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static void __exit sm6150_exit_qcom_llcc_exit(void)
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{
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platform_driver_unregister(&sm6150_qcom_llcc_driver);
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}
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module_exit(sm6150_exit_qcom_llcc_exit);
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MODULE_DESCRIPTION("Qualcomm Technologies Inc sm6150 LLCC driver");
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MODULE_LICENSE("GPL v2");
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