drivers/soc/qcom/llcc-sdm845.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Copyright (c) 2017-2018, The Linux Foundation. All rights reserved.
   4  *
   5  */
   6
   7 #include <linux/kernel.h>
   8 #include <linux/module.h>
   9 #include <linux/of.h>
  10 #include <linux/of_device.h>
  11 #include <linux/soc/qcom/llcc-qcom.h>
  12
  13 /*
  14  * SCT(System Cache Table) entry contains of the following members:
  15  * usecase_id: Unique id for the client's use case
  16  * slice_id: llcc slice id for each client
  17  * max_cap: The maximum capacity of the cache slice provided in KB
  18  * priority: Priority of the client used to select victim line for replacement
  19  * fixed_size: Boolean indicating if the slice has a fixed capacity
  20  * bonus_ways: Bonus ways are additional ways to be used for any slice,
  21  *              if client ends up using more than reserved cache ways. Bonus
  22  *              ways are allocated only if they are not reserved for some
  23  *              other client.
  24  * res_ways: Reserved ways for the cache slice, the reserved ways cannot
  25  *              be used by any other client than the one its assigned to.
  26  * cache_mode: Each slice operates as a cache, this controls the mode of the
  27  *             slice: normal or TCM(Tightly Coupled Memory)
  28  * probe_target_ways: Determines what ways to probe for access hit. When
  29  *                    configured to 1 only bonus and reserved ways are probed.
  30  *                    When configured to 0 all ways in llcc are probed.
  31  * dis_cap_alloc: Disable capacity based allocation for a client
  32  * retain_on_pc: If this bit is set and client has maintained active vote
  33  *               then the ways assigned to this client are not flushed on power
  34  *               collapse.
  35  * activate_on_init: Activate the slice immediately after the SCT is programmed
  36  */
  37 #define SCT_ENTRY(uid, sid, mc, p, fs, bway, rway, cmod, ptw, dca, rp, a) \
  38         {                                       \
  39                 .usecase_id = uid,              \
  40                 .slice_id = sid,                \
  41                 .max_cap = mc,                  \
  42                 .priority = p,                  \
  43                 .fixed_size = fs,               \
  44                 .bonus_ways = bway,             \
  45                 .res_ways = rway,               \
  46                 .cache_mode = cmod,             \
  47                 .probe_target_ways = ptw,       \
  48                 .dis_cap_alloc = dca,           \
  49                 .retain_on_pc = rp,             \
  50                 .activate_on_init = a,          \
  51         }
  52
  53 static struct llcc_slice_config sdm845_data[] =  {
  54         SCT_ENTRY(LLCC_CPUSS,    1,  2816, 1, 0, 0xffc, 0x2,   0, 0, 1, 1, 1),
  55         SCT_ENTRY(LLCC_VIDSC0,   2,  512,  2, 1, 0x0,   0x0f0, 0, 0, 1, 1, 0),
  56         SCT_ENTRY(LLCC_VIDSC1,   3,  512,  2, 1, 0x0,   0x0f0, 0, 0, 1, 1, 0),
  57         SCT_ENTRY(LLCC_ROTATOR,  4,  563,  2, 1, 0x0,   0x00e, 2, 0, 1, 1, 0),
  58         SCT_ENTRY(LLCC_VOICE,    5,  2816, 1, 0, 0xffc, 0x2,   0, 0, 1, 1, 0),
  59         SCT_ENTRY(LLCC_AUDIO,    6,  2816, 1, 0, 0xffc, 0x2,   0, 0, 1, 1, 0),
  60         SCT_ENTRY(LLCC_MDMHPGRW, 7,  1024, 2, 0, 0xfc,  0xf00, 0, 0, 1, 1, 0),
  61         SCT_ENTRY(LLCC_MDM,      8,  2816, 1, 0, 0xffc, 0x2,   0, 0, 1, 1, 0),
  62         SCT_ENTRY(LLCC_CMPT,     10, 2816, 1, 0, 0xffc, 0x2,   0, 0, 1, 1, 0),
  63         SCT_ENTRY(LLCC_GPUHTW,   11, 512,  1, 1, 0xc,   0x0,   0, 0, 1, 1, 0),
  64         SCT_ENTRY(LLCC_GPU,      12, 2304, 1, 0, 0xff0, 0x2,   0, 0, 1, 1, 0),
  65         SCT_ENTRY(LLCC_MMUHWT,   13, 256,  2, 0, 0x0,   0x1,   0, 0, 1, 0, 1),
  66         SCT_ENTRY(LLCC_CMPTDMA,  15, 2816, 1, 0, 0xffc, 0x2,   0, 0, 1, 1, 0),
  67         SCT_ENTRY(LLCC_DISP,     16, 2816, 1, 0, 0xffc, 0x2,   0, 0, 1, 1, 0),
  68         SCT_ENTRY(LLCC_VIDFW,    17, 2816, 1, 0, 0xffc, 0x2,   0, 0, 1, 1, 0),
  69         SCT_ENTRY(LLCC_MDMHPFX,  20, 1024, 2, 1, 0x0,   0xf00, 0, 0, 1, 1, 0),
  70         SCT_ENTRY(LLCC_MDMPNG,   21, 1024, 0, 1, 0x1e,  0x0,   0, 0, 1, 1, 0),
  71         SCT_ENTRY(LLCC_AUDHW,    22, 1024, 1, 1, 0xffc, 0x2,   0, 0, 1, 1, 0),
  72 };
  73
  74 static int sdm845_qcom_llcc_probe(struct platform_device *pdev)
  75 {
  76         return qcom_llcc_probe(pdev, sdm845_data, ARRAY_SIZE(sdm845_data));
  77 }
  78
  79 static const struct of_device_id sdm845_qcom_llcc_of_match[] = {
  80         { .compatible = "qcom,sdm845-llcc", },
  81         { }
  82 };
  83
  84 static struct platform_driver sdm845_qcom_llcc_driver = {
  85         .driver = {
  86                 .name = "sdm845-llcc",
  87                 .of_match_table = sdm845_qcom_llcc_of_match,
  88         },
  89         .probe = sdm845_qcom_llcc_probe,
  90 };
  91 module_platform_driver(sdm845_qcom_llcc_driver);
  92
  93 MODULE_DESCRIPTION("QCOM sdm845 LLCC driver");
  94 MODULE_LICENSE("GPL v2");