Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-16 17:12:06 +00:00
Code Issues Packages Projects Releases Wiki Activity
0882b473b0
linux/drivers/soc/qcom/llcc-qcom.c
Naina Mehta 3a461009e1 soc: qcom: llcc: Disable MMUHWT retention 
Disable MMUHWT retention for SC7280 as done for other platforms
to avoid more power burn.

Fixes: f6a07be633 ("soc: qcom: llcc: Add configuration data for SC7280")
Signed-off-by: Naina Mehta <nainmeht@codeaurora.org>
Signed-off-by: Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20210921055942.30600-1-saiprakash.ranjan@codeaurora.org
2021-09-21 17:41:49 -05:00

662 lines
20 KiB
C
Raw Blame History

// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2017-2019, The Linux Foundation. All rights reserved.
*
*/
#include <linux/bitfield.h>
#include <linux/bitmap.h>
#include <linux/bitops.h>
#include <linux/device.h>
#include <linux/io.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/regmap.h>
#include <linux/sizes.h>
#include <linux/slab.h>
#include <linux/soc/qcom/llcc-qcom.h>
#define ACTIVATE BIT(0)
#define DEACTIVATE BIT(1)
#define ACT_CTRL_OPCODE_ACTIVATE BIT(0)
#define ACT_CTRL_OPCODE_DEACTIVATE BIT(1)
#define ACT_CTRL_ACT_TRIG BIT(0)
#define ACT_CTRL_OPCODE_SHIFT 0x01
#define ATTR1_PROBE_TARGET_WAYS_SHIFT 0x02
#define ATTR1_FIXED_SIZE_SHIFT 0x03
#define ATTR1_PRIORITY_SHIFT 0x04
#define ATTR1_MAX_CAP_SHIFT 0x10
#define ATTR0_RES_WAYS_MASK GENMASK(11, 0)
#define ATTR0_BONUS_WAYS_MASK GENMASK(27, 16)
#define ATTR0_BONUS_WAYS_SHIFT 0x10
#define LLCC_STATUS_READ_DELAY 100
#define CACHE_LINE_SIZE_SHIFT 6
#define LLCC_COMMON_HW_INFO 0x00030000
#define LLCC_MAJOR_VERSION_MASK GENMASK(31, 24)
#define LLCC_COMMON_STATUS0 0x0003000c
#define LLCC_LB_CNT_MASK GENMASK(31, 28)
#define LLCC_LB_CNT_SHIFT 28
#define MAX_CAP_TO_BYTES(n) (n * SZ_1K)
#define LLCC_TRP_ACT_CTRLn(n) (n * SZ_4K)
#define LLCC_TRP_STATUSn(n) (4 + n * SZ_4K)
#define LLCC_TRP_ATTR0_CFGn(n) (0x21000 + SZ_8 * n)
#define LLCC_TRP_ATTR1_CFGn(n) (0x21004 + SZ_8 * n)
#define LLCC_TRP_SCID_DIS_CAP_ALLOC 0x21f00
#define LLCC_TRP_PCB_ACT 0x21f04
#define LLCC_TRP_WRSC_EN 0x21f20
#define BANK_OFFSET_STRIDE 0x80000
/**
* struct llcc_slice_config - Data associated with the llcc slice
* @usecase_id: 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: Boolean indicating if the slice has a fixed capacity
* @bonus_ways: Bonus ways are additional ways to be used for any slice,
* if client ends up using more than reserved cache ways. Bonus
* ways are allocated only if they are not reserved for some
* other client.
* @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(Tightly Coupled Memory)
* @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
* @retain_on_pc: If this bit is set and client has maintained active vote
* then the ways assigned to this client are not flushed on power
* collapse.
* @activate_on_init: Activate the slice immediately after it is programmed
* @write_scid_en: Bit enables write cache support for a given scid.
*/
struct llcc_slice_config {
u32 usecase_id;
u32 slice_id;
u32 max_cap;
u32 priority;
bool fixed_size;
u32 bonus_ways;
u32 res_ways;
u32 cache_mode;
u32 probe_target_ways;
bool dis_cap_alloc;
bool retain_on_pc;
bool activate_on_init;
bool write_scid_en;
};
struct qcom_llcc_config {
const struct llcc_slice_config *sct_data;
int size;
bool need_llcc_cfg;
};
static const struct llcc_slice_config sc7180_data[] = {
{ LLCC_CPUSS, 1, 256, 1, 0, 0xf, 0x0, 0, 0, 0, 1, 1 },
{ LLCC_MDM, 8, 128, 1, 0, 0xf, 0x0, 0, 0, 0, 1, 0 },
{ LLCC_GPUHTW, 11, 128, 1, 0, 0xf, 0x0, 0, 0, 0, 1, 0 },
{ LLCC_GPU, 12, 128, 1, 0, 0xf, 0x0, 0, 0, 0, 1, 0 },
};
static const struct llcc_slice_config sc7280_data[] = {
{ LLCC_CPUSS, 1, 768, 1, 0, 0x3f, 0x0, 0, 0, 0, 1, 1, 0},
{ LLCC_MDMHPGRW, 7, 512, 2, 1, 0x3f, 0x0, 0, 0, 0, 1, 0, 0},
{ LLCC_CMPT, 10, 768, 1, 1, 0x3f, 0x0, 0, 0, 0, 1, 0, 0},
{ LLCC_GPUHTW, 11, 256, 1, 1, 0x3f, 0x0, 0, 0, 0, 1, 0, 0},
{ LLCC_GPU, 12, 512, 1, 0, 0x3f, 0x0, 0, 0, 0, 1, 0, 0},
{ LLCC_MMUHWT, 13, 256, 1, 1, 0x3f, 0x0, 0, 0, 0, 0, 1, 0},
{ LLCC_MDMPNG, 21, 768, 0, 1, 0x3f, 0x0, 0, 0, 0, 1, 0, 0},
{ LLCC_WLHW, 24, 256, 1, 1, 0x3f, 0x0, 0, 0, 0, 1, 0, 0},
{ LLCC_MODPE, 29, 64, 1, 1, 0x3f, 0x0, 0, 0, 0, 1, 0, 0},
};
static const struct llcc_slice_config sdm845_data[] = {
{ LLCC_CPUSS, 1, 2816, 1, 0, 0xffc, 0x2, 0, 0, 1, 1, 1 },
{ LLCC_VIDSC0, 2, 512, 2, 1, 0x0, 0x0f0, 0, 0, 1, 1, 0 },
{ LLCC_VIDSC1, 3, 512, 2, 1, 0x0, 0x0f0, 0, 0, 1, 1, 0 },
{ LLCC_ROTATOR, 4, 563, 2, 1, 0x0, 0x00e, 2, 0, 1, 1, 0 },
{ LLCC_VOICE, 5, 2816, 1, 0, 0xffc, 0x2, 0, 0, 1, 1, 0 },
{ LLCC_AUDIO, 6, 2816, 1, 0, 0xffc, 0x2, 0, 0, 1, 1, 0 },
{ LLCC_MDMHPGRW, 7, 1024, 2, 0, 0xfc, 0xf00, 0, 0, 1, 1, 0 },
{ LLCC_MDM, 8, 2816, 1, 0, 0xffc, 0x2, 0, 0, 1, 1, 0 },
{ LLCC_CMPT, 10, 2816, 1, 0, 0xffc, 0x2, 0, 0, 1, 1, 0 },
{ LLCC_GPUHTW, 11, 512, 1, 1, 0xc, 0x0, 0, 0, 1, 1, 0 },
{ LLCC_GPU, 12, 2304, 1, 0, 0xff0, 0x2, 0, 0, 1, 1, 0 },
{ LLCC_MMUHWT, 13, 256, 2, 0, 0x0, 0x1, 0, 0, 1, 0, 1 },
{ LLCC_CMPTDMA, 15, 2816, 1, 0, 0xffc, 0x2, 0, 0, 1, 1, 0 },
{ LLCC_DISP, 16, 2816, 1, 0, 0xffc, 0x2, 0, 0, 1, 1, 0 },
{ LLCC_VIDFW, 17, 2816, 1, 0, 0xffc, 0x2, 0, 0, 1, 1, 0 },
{ LLCC_MDMHPFX, 20, 1024, 2, 1, 0x0, 0xf00, 0, 0, 1, 1, 0 },
{ LLCC_MDMPNG, 21, 1024, 0, 1, 0x1e, 0x0, 0, 0, 1, 1, 0 },
{ LLCC_AUDHW, 22, 1024, 1, 1, 0xffc, 0x2, 0, 0, 1, 1, 0 },
};
static const struct llcc_slice_config sm6350_data[] = {
{ LLCC_CPUSS, 1, 768, 1, 0, 0xFFF, 0x0, 0, 0, 0, 0, 1, 1 },
{ LLCC_MDM, 8, 512, 2, 0, 0xFFF, 0x0, 0, 0, 0, 0, 1, 0 },
{ LLCC_GPUHTW, 11, 256, 1, 0, 0xFFF, 0x0, 0, 0, 0, 0, 1, 0 },
{ LLCC_GPU, 12, 512, 1, 0, 0xFFF, 0x0, 0, 0, 0, 0, 1, 0 },
{ LLCC_MDMPNG, 21, 768, 0, 1, 0xFFF, 0x0, 0, 0, 0, 0, 1, 0 },
{ LLCC_NPU, 23, 768, 1, 0, 0xFFF, 0x0, 0, 0, 0, 0, 1, 0 },
{ LLCC_MODPE, 29, 64, 1, 1, 0xFFF, 0x0, 0, 0, 0, 0, 1, 0 },
};
static const struct llcc_slice_config sm8150_data[] = {
{ LLCC_CPUSS, 1, 3072, 1, 1, 0xFFF, 0x0, 0, 0, 0, 1, 1 },
{ LLCC_VIDSC0, 2, 512, 2, 1, 0xFFF, 0x0, 0, 0, 0, 1, 0 },
{ LLCC_VIDSC1, 3, 512, 2, 1, 0xFFF, 0x0, 0, 0, 0, 1, 0 },
{ LLCC_AUDIO, 6, 1024, 1, 1, 0xFFF, 0x0, 0, 0, 0, 1, 0 },
{ LLCC_MDMHPGRW, 7, 3072, 1, 0, 0xFF, 0xF00, 0, 0, 0, 1, 0 },
{ LLCC_MDM, 8, 3072, 1, 1, 0xFFF, 0x0, 0, 0, 0, 1, 0 },
{ LLCC_MODHW, 9, 1024, 1, 1, 0xFFF, 0x0, 0, 0, 0, 1, 0 },
{ LLCC_CMPT, 10, 3072, 1, 1, 0xFFF, 0x0, 0, 0, 0, 1, 0 },
{ LLCC_GPUHTW , 11, 512, 1, 1, 0xFFF, 0x0, 0, 0, 0, 1, 0 },
{ LLCC_GPU, 12, 2560, 1, 1, 0xFFF, 0x0, 0, 0, 0, 1, 0 },
{ LLCC_MMUHWT, 13, 1024, 1, 1, 0xFFF, 0x0, 0, 0, 0, 0, 1 },
{ LLCC_CMPTDMA, 15, 3072, 1, 1, 0xFFF, 0x0, 0, 0, 0, 1, 0 },
{ LLCC_DISP, 16, 3072, 1, 1, 0xFFF, 0x0, 0, 0, 0, 1, 0 },
{ LLCC_MDMHPFX, 20, 1024, 2, 1, 0xFFF, 0x0, 0, 0, 0, 1, 0 },
{ LLCC_MDMHPFX, 21, 1024, 0, 1, 0xF, 0x0, 0, 0, 0, 1, 0 },
{ LLCC_AUDHW, 22, 1024, 1, 1, 0xFFF, 0x0, 0, 0, 0, 1, 0 },
{ LLCC_NPU, 23, 3072, 1, 1, 0xFFF, 0x0, 0, 0, 0, 1, 0 },
{ LLCC_WLHW, 24, 3072, 1, 1, 0xFFF, 0x0, 0, 0, 0, 1, 0 },
{ LLCC_MODPE, 29, 256, 1, 1, 0xF, 0x0, 0, 0, 0, 1, 0 },
{ LLCC_APTCM, 30, 256, 3, 1, 0x0, 0x1, 1, 0, 0, 1, 0 },
{ LLCC_WRCACHE, 31, 128, 1, 1, 0xFFF, 0x0, 0, 0, 0, 0, 0 },
};
static const struct llcc_slice_config sm8250_data[] = {
{ LLCC_CPUSS, 1, 3072, 1, 1, 0xfff, 0x0, 0, 0, 0, 1, 1, 0 },
{ LLCC_VIDSC0, 2, 512, 3, 1, 0xfff, 0x0, 0, 0, 0, 1, 0, 0 },
{ LLCC_AUDIO, 6, 1024, 1, 0, 0xfff, 0x0, 0, 0, 0, 0, 0, 0 },
{ LLCC_CMPT, 10, 1024, 1, 0, 0xfff, 0x0, 0, 0, 0, 0, 0, 0 },
{ LLCC_GPUHTW, 11, 1024, 1, 1, 0xfff, 0x0, 0, 0, 0, 1, 0, 0 },
{ LLCC_GPU, 12, 1024, 1, 0, 0xfff, 0x0, 0, 0, 0, 1, 0, 1 },
{ LLCC_MMUHWT, 13, 1024, 1, 1, 0xfff, 0x0, 0, 0, 0, 0, 1, 0 },
{ LLCC_CMPTDMA, 15, 1024, 1, 0, 0xfff, 0x0, 0, 0, 0, 1, 0, 0 },
{ LLCC_DISP, 16, 3072, 1, 1, 0xfff, 0x0, 0, 0, 0, 1, 0, 0 },
{ LLCC_VIDFW, 17, 512, 1, 0, 0xfff, 0x0, 0, 0, 0, 1, 0, 0 },
{ LLCC_AUDHW, 22, 1024, 1, 1, 0xfff, 0x0, 0, 0, 0, 1, 0, 0 },
{ LLCC_NPU, 23, 3072, 1, 1, 0xfff, 0x0, 0, 0, 0, 1, 0, 0 },
{ LLCC_WLHW, 24, 1024, 1, 0, 0xfff, 0x0, 0, 0, 0, 1, 0, 0 },
{ LLCC_CVP, 28, 256, 3, 1, 0xfff, 0x0, 0, 0, 0, 1, 0, 0 },
{ LLCC_APTCM, 30, 128, 3, 0, 0x0, 0x3, 1, 0, 0, 1, 0, 0 },
{ LLCC_WRCACHE, 31, 256, 1, 1, 0xfff, 0x0, 0, 0, 0, 0, 1, 0 },
};
static const struct qcom_llcc_config sc7180_cfg = {
.sct_data = sc7180_data,
.size = ARRAY_SIZE(sc7180_data),
.need_llcc_cfg = true,
};
static const struct qcom_llcc_config sc7280_cfg = {
.sct_data = sc7280_data,
.size = ARRAY_SIZE(sc7280_data),
.need_llcc_cfg = true,
};
static const struct qcom_llcc_config sdm845_cfg = {
.sct_data = sdm845_data,
.size = ARRAY_SIZE(sdm845_data),
.need_llcc_cfg = false,
};
static const struct qcom_llcc_config sm6350_cfg = {
.sct_data = sm6350_data,
.size = ARRAY_SIZE(sm6350_data),
};
static const struct qcom_llcc_config sm8150_cfg = {
.sct_data = sm8150_data,
.size = ARRAY_SIZE(sm8150_data),
};
static const struct qcom_llcc_config sm8250_cfg = {
.sct_data = sm8250_data,
.size = ARRAY_SIZE(sm8250_data),
};
static struct llcc_drv_data *drv_data = (void *) -EPROBE_DEFER;
/**
* llcc_slice_getd - get llcc slice descriptor
* @uid: usecase_id for the client
*
* A pointer to llcc slice descriptor will be returned on success and
* and error pointer is returned on failure
*/
struct llcc_slice_desc *llcc_slice_getd(u32 uid)
{
const struct llcc_slice_config *cfg;
struct llcc_slice_desc *desc;
u32 sz, count;
if (IS_ERR(drv_data))
return ERR_CAST(drv_data);
cfg = drv_data->cfg;
sz = drv_data->cfg_size;
for (count = 0; cfg && count < sz; count++, cfg++)
if (cfg->usecase_id == uid)
break;
if (count == sz || !cfg)
return ERR_PTR(-ENODEV);
desc = kzalloc(sizeof(*desc), GFP_KERNEL);
if (!desc)
return ERR_PTR(-ENOMEM);
desc->slice_id = cfg->slice_id;
desc->slice_size = cfg->max_cap;
return desc;
}
EXPORT_SYMBOL_GPL(llcc_slice_getd);
/**
* llcc_slice_putd - llcc slice descritpor
* @desc: Pointer to llcc slice descriptor
*/
void llcc_slice_putd(struct llcc_slice_desc *desc)
{
if (!IS_ERR_OR_NULL(desc))
kfree(desc);
}
EXPORT_SYMBOL_GPL(llcc_slice_putd);
static int llcc_update_act_ctrl(u32 sid,
u32 act_ctrl_reg_val, u32 status)
{
u32 act_ctrl_reg;
u32 status_reg;
u32 slice_status;
int ret;
if (IS_ERR(drv_data))
return PTR_ERR(drv_data);
act_ctrl_reg = LLCC_TRP_ACT_CTRLn(sid);
status_reg = LLCC_TRP_STATUSn(sid);
/* Set the ACTIVE trigger */
act_ctrl_reg_val |= ACT_CTRL_ACT_TRIG;
ret = regmap_write(drv_data->bcast_regmap, act_ctrl_reg,
act_ctrl_reg_val);
if (ret)
return ret;
/* Clear the ACTIVE trigger */
act_ctrl_reg_val &= ~ACT_CTRL_ACT_TRIG;
ret = regmap_write(drv_data->bcast_regmap, act_ctrl_reg,
act_ctrl_reg_val);
if (ret)
return ret;
ret = regmap_read_poll_timeout(drv_data->bcast_regmap, status_reg,
slice_status, !(slice_status & status),
0, LLCC_STATUS_READ_DELAY);
return ret;
}
/**
* llcc_slice_activate - Activate the llcc slice
* @desc: Pointer to llcc slice descriptor
*
* A value of zero will be returned on success and a negative errno will
* be returned in error cases
*/
int llcc_slice_activate(struct llcc_slice_desc *desc)
{
int ret;
u32 act_ctrl_val;
if (IS_ERR(drv_data))
return PTR_ERR(drv_data);
if (IS_ERR_OR_NULL(desc))
return -EINVAL;
mutex_lock(&drv_data->lock);
if (test_bit(desc->slice_id, drv_data->bitmap)) {
mutex_unlock(&drv_data->lock);
return 0;
}
act_ctrl_val = ACT_CTRL_OPCODE_ACTIVATE << ACT_CTRL_OPCODE_SHIFT;
ret = llcc_update_act_ctrl(desc->slice_id, act_ctrl_val,
DEACTIVATE);
if (ret) {
mutex_unlock(&drv_data->lock);
return ret;
}
__set_bit(desc->slice_id, drv_data->bitmap);
mutex_unlock(&drv_data->lock);
return ret;
}
EXPORT_SYMBOL_GPL(llcc_slice_activate);
/**
* llcc_slice_deactivate - Deactivate the llcc slice
* @desc: Pointer to llcc slice descriptor
*
* A value of zero will be returned on success and a negative errno will
* be returned in error cases
*/
int llcc_slice_deactivate(struct llcc_slice_desc *desc)
{
u32 act_ctrl_val;
int ret;
if (IS_ERR(drv_data))
return PTR_ERR(drv_data);
if (IS_ERR_OR_NULL(desc))
return -EINVAL;
mutex_lock(&drv_data->lock);
if (!test_bit(desc->slice_id, drv_data->bitmap)) {
mutex_unlock(&drv_data->lock);
return 0;
}
act_ctrl_val = ACT_CTRL_OPCODE_DEACTIVATE << ACT_CTRL_OPCODE_SHIFT;
ret = llcc_update_act_ctrl(desc->slice_id, act_ctrl_val,
ACTIVATE);
if (ret) {
mutex_unlock(&drv_data->lock);
return ret;
}
__clear_bit(desc->slice_id, drv_data->bitmap);
mutex_unlock(&drv_data->lock);
return ret;
}
EXPORT_SYMBOL_GPL(llcc_slice_deactivate);
/**
* llcc_get_slice_id - return the slice id
* @desc: Pointer to llcc slice descriptor
*/
int llcc_get_slice_id(struct llcc_slice_desc *desc)
{
if (IS_ERR_OR_NULL(desc))
return -EINVAL;
return desc->slice_id;
}
EXPORT_SYMBOL_GPL(llcc_get_slice_id);
/**
* llcc_get_slice_size - return the slice id
* @desc: Pointer to llcc slice descriptor
*/
size_t llcc_get_slice_size(struct llcc_slice_desc *desc)
{
if (IS_ERR_OR_NULL(desc))
return 0;
return desc->slice_size;
}
EXPORT_SYMBOL_GPL(llcc_get_slice_size);
static int _qcom_llcc_cfg_program(const struct llcc_slice_config *config,
const struct qcom_llcc_config *cfg)
{
int ret;
u32 attr1_cfg;
u32 attr0_cfg;
u32 attr1_val;
u32 attr0_val;
u32 max_cap_cacheline;
struct llcc_slice_desc desc;
attr1_val = config->cache_mode;
attr1_val |= config->probe_target_ways << ATTR1_PROBE_TARGET_WAYS_SHIFT;
attr1_val |= config->fixed_size << ATTR1_FIXED_SIZE_SHIFT;
attr1_val |= config->priority << ATTR1_PRIORITY_SHIFT;
max_cap_cacheline = MAX_CAP_TO_BYTES(config->max_cap);
/*
* LLCC instances can vary for each target.
* The SW writes to broadcast register which gets propagated
* to each llcc instance (llcc0,.. llccN).
* Since the size of the memory is divided equally amongst the
* llcc instances, we need to configure the max cap accordingly.
*/
max_cap_cacheline = max_cap_cacheline / drv_data->num_banks;
max_cap_cacheline >>= CACHE_LINE_SIZE_SHIFT;
attr1_val |= max_cap_cacheline << ATTR1_MAX_CAP_SHIFT;
attr1_cfg = LLCC_TRP_ATTR1_CFGn(config->slice_id);
ret = regmap_write(drv_data->bcast_regmap, attr1_cfg, attr1_val);
if (ret)
return ret;
attr0_val = config->res_ways & ATTR0_RES_WAYS_MASK;
attr0_val |= config->bonus_ways << ATTR0_BONUS_WAYS_SHIFT;
attr0_cfg = LLCC_TRP_ATTR0_CFGn(config->slice_id);
ret = regmap_write(drv_data->bcast_regmap, attr0_cfg, attr0_val);
if (ret)
return ret;
if (cfg->need_llcc_cfg) {
u32 disable_cap_alloc, retain_pc;
disable_cap_alloc = config->dis_cap_alloc << config->slice_id;
ret = regmap_write(drv_data->bcast_regmap,
LLCC_TRP_SCID_DIS_CAP_ALLOC, disable_cap_alloc);
if (ret)
return ret;
retain_pc = config->retain_on_pc << config->slice_id;
ret = regmap_write(drv_data->bcast_regmap,
LLCC_TRP_PCB_ACT, retain_pc);
if (ret)
return ret;
}
if (drv_data->major_version == 2) {
u32 wren;
wren = config->write_scid_en << config->slice_id;
ret = regmap_update_bits(drv_data->bcast_regmap, LLCC_TRP_WRSC_EN,
BIT(config->slice_id), wren);
if (ret)
return ret;
}
if (config->activate_on_init) {
desc.slice_id = config->slice_id;
ret = llcc_slice_activate(&desc);
}
return ret;
}
static int qcom_llcc_cfg_program(struct platform_device *pdev,
const struct qcom_llcc_config *cfg)
{
int i;
u32 sz;
int ret = 0;
const struct llcc_slice_config *llcc_table;
sz = drv_data->cfg_size;
llcc_table = drv_data->cfg;
for (i = 0; i < sz; i++) {
ret = _qcom_llcc_cfg_program(&llcc_table[i], cfg);
if (ret)
return ret;
}
return ret;
}
static int qcom_llcc_remove(struct platform_device *pdev)
{
/* Set the global pointer to a error code to avoid referencing it */
drv_data = ERR_PTR(-ENODEV);
return 0;
}
static struct regmap *qcom_llcc_init_mmio(struct platform_device *pdev,
const char *name)
{
void __iomem *base;
struct regmap_config llcc_regmap_config = {
.reg_bits = 32,
.reg_stride = 4,
.val_bits = 32,
.fast_io = true,
};
base = devm_platform_ioremap_resource_byname(pdev, name);
if (IS_ERR(base))
return ERR_CAST(base);
llcc_regmap_config.name = name;
return devm_regmap_init_mmio(&pdev->dev, base, &llcc_regmap_config);
}
static int qcom_llcc_probe(struct platform_device *pdev)
{
u32 num_banks;
struct device *dev = &pdev->dev;
int ret, i;
struct platform_device *llcc_edac;
const struct qcom_llcc_config *cfg;
const struct llcc_slice_config *llcc_cfg;
u32 sz;
u32 version;
drv_data = devm_kzalloc(dev, sizeof(*drv_data), GFP_KERNEL);
if (!drv_data) {
ret = -ENOMEM;
goto err;
}
drv_data->regmap = qcom_llcc_init_mmio(pdev, "llcc_base");
if (IS_ERR(drv_data->regmap)) {
ret = PTR_ERR(drv_data->regmap);
goto err;
}
drv_data->bcast_regmap =
qcom_llcc_init_mmio(pdev, "llcc_broadcast_base");
if (IS_ERR(drv_data->bcast_regmap)) {
ret = PTR_ERR(drv_data->bcast_regmap);
goto err;
}
/* Extract major version of the IP */
ret = regmap_read(drv_data->bcast_regmap, LLCC_COMMON_HW_INFO, &version);
if (ret)
goto err;
drv_data->major_version = FIELD_GET(LLCC_MAJOR_VERSION_MASK, version);
ret = regmap_read(drv_data->regmap, LLCC_COMMON_STATUS0,
&num_banks);
if (ret)
goto err;
num_banks &= LLCC_LB_CNT_MASK;
num_banks >>= LLCC_LB_CNT_SHIFT;
drv_data->num_banks = num_banks;
cfg = of_device_get_match_data(&pdev->dev);
llcc_cfg = cfg->sct_data;
sz = cfg->size;
for (i = 0; i < sz; i++)
if (llcc_cfg[i].slice_id > drv_data->max_slices)
drv_data->max_slices = llcc_cfg[i].slice_id;
drv_data->offsets = devm_kcalloc(dev, num_banks, sizeof(u32),
GFP_KERNEL);
if (!drv_data->offsets) {
ret = -ENOMEM;
goto err;
}
for (i = 0; i < num_banks; i++)
drv_data->offsets[i] = i * BANK_OFFSET_STRIDE;
drv_data->bitmap = devm_kcalloc(dev,
BITS_TO_LONGS(drv_data->max_slices), sizeof(unsigned long),
GFP_KERNEL);
if (!drv_data->bitmap) {
ret = -ENOMEM;
goto err;
}
drv_data->cfg = llcc_cfg;
drv_data->cfg_size = sz;
mutex_init(&drv_data->lock);
platform_set_drvdata(pdev, drv_data);
ret = qcom_llcc_cfg_program(pdev, cfg);
if (ret)
goto err;
drv_data->ecc_irq = platform_get_irq(pdev, 0);
if (drv_data->ecc_irq >= 0) {
llcc_edac = platform_device_register_data(&pdev->dev,
"qcom_llcc_edac", -1, drv_data,
sizeof(*drv_data));
if (IS_ERR(llcc_edac))
dev_err(dev, "Failed to register llcc edac driver\n");
}
return 0;
err:
drv_data = ERR_PTR(-ENODEV);
return ret;
}
static const struct of_device_id qcom_llcc_of_match[] = {
{ .compatible = "qcom,sc7180-llcc", .data = &sc7180_cfg },
{ .compatible = "qcom,sc7280-llcc", .data = &sc7280_cfg },
{ .compatible = "qcom,sdm845-llcc", .data = &sdm845_cfg },
{ .compatible = "qcom,sm6350-llcc", .data = &sm6350_cfg },
{ .compatible = "qcom,sm8150-llcc", .data = &sm8150_cfg },
{ .compatible = "qcom,sm8250-llcc", .data = &sm8250_cfg },
{ }
};
static struct platform_driver qcom_llcc_driver = {
.driver = {
.name = "qcom-llcc",
.of_match_table = qcom_llcc_of_match,
},
.probe = qcom_llcc_probe,
.remove = qcom_llcc_remove,
};
module_platform_driver(qcom_llcc_driver);
MODULE_DESCRIPTION("Qualcomm Last Level Cache Controller");
MODULE_LICENSE("GPL v2");
Reference in New Issue View Git Blame Copy Permalink