On Wed 23 May 17:35 PDT 2018, Rishabh Bhatnagar wrote: > LLCC (Last Level Cache Controller) provides additional cache memory > in the system. LLCC is partitioned into multiple slices and each > slice gets its own priority, size, ID and other config parameters. > LLCC driver programs these parameters for each slice. Clients that > are assigned to use LLCC need to get information such size & ID of the > slice they get and activate or deactivate the slice as needed. LLCC driver > provides API for the clients to perform these operations. > > Signed-off-by: Channagoud Kadabi <[email protected]> > Signed-off-by: Rishabh Bhatnagar <[email protected]> > Reviewed-by: Evan Green <[email protected]> > Reviewed-by: Rob Herring <[email protected]>
Reviewed-by: Bjorn Andersson <[email protected]> Regards, Bjorn > --- > drivers/soc/qcom/Kconfig | 17 ++ > drivers/soc/qcom/Makefile | 2 + > drivers/soc/qcom/llcc-sdm845.c | 94 +++++++++++ > drivers/soc/qcom/llcc-slice.c | 335 > +++++++++++++++++++++++++++++++++++++ > include/linux/soc/qcom/llcc-qcom.h | 180 ++++++++++++++++++++ > 5 files changed, 628 insertions(+) > create mode 100644 drivers/soc/qcom/llcc-sdm845.c > create mode 100644 drivers/soc/qcom/llcc-slice.c > create mode 100644 include/linux/soc/qcom/llcc-qcom.h > > diff --git a/drivers/soc/qcom/Kconfig b/drivers/soc/qcom/Kconfig > index e050eb8..0b550f9 100644 > --- a/drivers/soc/qcom/Kconfig > +++ b/drivers/soc/qcom/Kconfig > @@ -21,6 +21,23 @@ config QCOM_GSBI > functions for connecting the underlying serial UART, SPI, and I2C > devices to the output pins. > > +config QCOM_LLCC > + tristate "Qualcomm Technologies, Inc. LLCC driver" > + depends on ARCH_QCOM > + help > + Qualcomm Technologies, Inc. platform specific > + Last Level Cache Controller(LLCC) driver. This provides interfaces > + to clients that use the LLCC. Say yes here to enable LLCC slice > + driver. > + > +config QCOM_SDM845_LLCC > + tristate "Qualcomm Technologies, Inc. SDM845 LLCC driver" > + depends on QCOM_LLCC > + help > + Say yes here to enable the LLCC driver for SDM845. This provides > + data required to configure LLCC so that clients can start using the > + LLCC slices. > + > config QCOM_MDT_LOADER > tristate > select QCOM_SCM > diff --git a/drivers/soc/qcom/Makefile b/drivers/soc/qcom/Makefile > index dcebf28..e16d6a2 100644 > --- a/drivers/soc/qcom/Makefile > +++ b/drivers/soc/qcom/Makefile > @@ -12,3 +12,5 @@ obj-$(CONFIG_QCOM_SMEM_STATE) += smem_state.o > obj-$(CONFIG_QCOM_SMP2P) += smp2p.o > obj-$(CONFIG_QCOM_SMSM) += smsm.o > obj-$(CONFIG_QCOM_WCNSS_CTRL) += wcnss_ctrl.o > +obj-$(CONFIG_QCOM_LLCC) += llcc-slice.o > +obj-$(CONFIG_QCOM_SDM845_LLCC) += llcc-sdm845.o > diff --git a/drivers/soc/qcom/llcc-sdm845.c b/drivers/soc/qcom/llcc-sdm845.c > new file mode 100644 > index 0000000..2e1e4f0 > --- /dev/null > +++ b/drivers/soc/qcom/llcc-sdm845.c > @@ -0,0 +1,94 @@ > +// SPDX-License-Identifier: GPL-2.0 > +/* > + * Copyright (c) 2017-2018, The Linux Foundation. All rights reserved. > + * > + */ > + > +#include <linux/kernel.h> > +#include <linux/module.h> > +#include <linux/of.h> > +#include <linux/of_device.h> > +#include <linux/soc/qcom/llcc-qcom.h> > + > +/* > + * SCT(System Cache Table) entry contains of the following members: > + * 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 the SCT is > programmed > + */ > +#define SCT_ENTRY(uid, sid, mc, p, fs, bway, rway, cmod, ptw, dca, 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, \ > + .retain_on_pc = rp, \ > + .activate_on_init = a, \ > + } > + > +static struct llcc_slice_config sdm845_data[] = { > + SCT_ENTRY(LLCC_CPUSS, 1, 2816, 1, 0, 0xffc, 0x2, 0, 0, 1, 1, 1), > + SCT_ENTRY(LLCC_VIDSC0, 2, 512, 2, 1, 0x0, 0x0f0, 0, 0, 1, 1, 0), > + SCT_ENTRY(LLCC_VIDSC1, 3, 512, 2, 1, 0x0, 0x0f0, 0, 0, 1, 1, 0), > + SCT_ENTRY(LLCC_ROTATOR, 4, 563, 2, 1, 0x0, 0x00e, 2, 0, 1, 1, 0), > + SCT_ENTRY(LLCC_VOICE, 5, 2816, 1, 0, 0xffc, 0x2, 0, 0, 1, 1, 0), > + SCT_ENTRY(LLCC_AUDIO, 6, 2816, 1, 0, 0xffc, 0x2, 0, 0, 1, 1, 0), > + SCT_ENTRY(LLCC_MDMHPGRW, 7, 1024, 2, 0, 0xfc, 0xf00, 0, 0, 1, 1, 0), > + SCT_ENTRY(LLCC_MDM, 8, 2816, 1, 0, 0xffc, 0x2, 0, 0, 1, 1, 0), > + SCT_ENTRY(LLCC_CMPT, 10, 2816, 1, 0, 0xffc, 0x2, 0, 0, 1, 1, 0), > + SCT_ENTRY(LLCC_GPUHTW, 11, 512, 1, 1, 0xc, 0x0, 0, 0, 1, 1, 0), > + SCT_ENTRY(LLCC_GPU, 12, 2304, 1, 0, 0xff0, 0x2, 0, 0, 1, 1, 0), > + SCT_ENTRY(LLCC_MMUHWT, 13, 256, 2, 0, 0x0, 0x1, 0, 0, 1, 0, 1), > + SCT_ENTRY(LLCC_CMPTDMA, 15, 2816, 1, 0, 0xffc, 0x2, 0, 0, 1, 1, 0), > + SCT_ENTRY(LLCC_DISP, 16, 2816, 1, 0, 0xffc, 0x2, 0, 0, 1, 1, 0), > + SCT_ENTRY(LLCC_VIDFW, 17, 2816, 1, 0, 0xffc, 0x2, 0, 0, 1, 1, 0), > + SCT_ENTRY(LLCC_MDMHPFX, 20, 1024, 2, 1, 0x0, 0xf00, 0, 0, 1, 1, 0), > + SCT_ENTRY(LLCC_MDMPNG, 21, 1024, 0, 1, 0x1e, 0x0, 0, 0, 1, 1, 0), > + SCT_ENTRY(LLCC_AUDHW, 22, 1024, 1, 1, 0xffc, 0x2, 0, 0, 1, 1, 0), > +}; > + > +static int sdm845_qcom_llcc_probe(struct platform_device *pdev) > +{ > + return qcom_llcc_probe(pdev, sdm845_data, ARRAY_SIZE(sdm845_data)); > +} > + > +static const struct of_device_id sdm845_qcom_llcc_of_match[] = { > + { .compatible = "qcom,sdm845-llcc", }, > + { } > +}; > + > +static struct platform_driver sdm845_qcom_llcc_driver = { > + .driver = { > + .name = "sdm845-llcc", > + .of_match_table = sdm845_qcom_llcc_of_match, > + }, > + .probe = sdm845_qcom_llcc_probe, > +}; > +module_platform_driver(sdm845_qcom_llcc_driver); > + > +MODULE_DESCRIPTION("QCOM sdm845 LLCC driver"); > +MODULE_LICENSE("GPL v2"); > diff --git a/drivers/soc/qcom/llcc-slice.c b/drivers/soc/qcom/llcc-slice.c > new file mode 100644 > index 0000000..fcaad1a > --- /dev/null > +++ b/drivers/soc/qcom/llcc-slice.c > @@ -0,0 +1,335 @@ > +// SPDX-License-Identifier: GPL-2.0 > +/* > + * Copyright (c) 2017-2018, The Linux Foundation. All rights reserved. > + * > + */ > + > +#include <linux/bitmap.h> > +#include <linux/bitops.h> > +#include <linux/device.h> > +#include <linux/io.h> > +#include <linux/kernel.h> > +#include <linux/mutex.h> > +#include <linux/of_device.h> > +#include <linux/regmap.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_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 BANK_OFFSET_STRIDE 0x80000 > + > +static struct llcc_drv_data *drv_data; > + > +static const struct regmap_config llcc_regmap_config = { > + .reg_bits = 32, > + .reg_stride = 4, > + .val_bits = 32, > + .fast_io = true, > +}; > + > +/** > + * 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; > + > + 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) > +{ > + 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; > + > + act_ctrl_reg = drv_data->bcast_off + LLCC_TRP_ACT_CTRLn(sid); > + status_reg = drv_data->bcast_off + LLCC_TRP_STATUSn(sid); > + > + /* Set the ACTIVE trigger */ > + act_ctrl_reg_val |= ACT_CTRL_ACT_TRIG; > + ret = regmap_write(drv_data->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->regmap, act_ctrl_reg, act_ctrl_reg_val); > + if (ret) > + return ret; > + > + ret = regmap_read_poll_timeout(drv_data->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; > + > + 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; > + > + 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) > +{ > + 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) > +{ > + return desc->slice_size; > +} > +EXPORT_SYMBOL_GPL(llcc_get_slice_size); > + > +static int qcom_llcc_cfg_program(struct platform_device *pdev) > +{ > + int i; > + u32 attr1_cfg; > + u32 attr0_cfg; > + u32 attr1_val; > + u32 attr0_val; > + u32 max_cap_cacheline; > + u32 sz; > + int ret; > + const struct llcc_slice_config *llcc_table; > + struct llcc_slice_desc desc; > + u32 bcast_off = drv_data->bcast_off; > + > + sz = drv_data->cfg_size; > + llcc_table = drv_data->cfg; > + > + for (i = 0; i < sz; i++) { > + attr1_cfg = bcast_off + > + LLCC_TRP_ATTR1_CFGn(llcc_table[i].slice_id); > + attr0_cfg = bcast_off + > + LLCC_TRP_ATTR0_CFGn(llcc_table[i].slice_id); > + > + attr1_val = llcc_table[i].cache_mode; > + attr1_val |= llcc_table[i].probe_target_ways << > + ATTR1_PROBE_TARGET_WAYS_SHIFT; > + attr1_val |= llcc_table[i].fixed_size << > + ATTR1_FIXED_SIZE_SHIFT; > + attr1_val |= llcc_table[i].priority << > + ATTR1_PRIORITY_SHIFT; > + > + max_cap_cacheline = MAX_CAP_TO_BYTES(llcc_table[i].max_cap); > + > + /* LLCC instances can vary for each target. > + * The SW writes to broadcast register which gets propagated > + * to each llcc instace (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; > + > + attr0_val = llcc_table[i].res_ways & ATTR0_RES_WAYS_MASK; > + attr0_val |= llcc_table[i].bonus_ways << ATTR0_BONUS_WAYS_SHIFT; > + > + ret = regmap_write(drv_data->regmap, attr1_cfg, attr1_val); > + if (ret) > + return ret; > + ret = regmap_write(drv_data->regmap, attr0_cfg, attr0_val); > + if (ret) > + return ret; > + if (llcc_table[i].activate_on_init) { > + desc.slice_id = llcc_table[i].slice_id; > + ret = llcc_slice_activate(&desc); > + } > + } > + return ret; > +} > + > +int qcom_llcc_probe(struct platform_device *pdev, > + const struct llcc_slice_config *llcc_cfg, u32 sz) > +{ > + u32 num_banks; > + struct device *dev = &pdev->dev; > + struct resource *res; > + void __iomem *base; > + int ret, i; > + > + drv_data = devm_kzalloc(dev, sizeof(*drv_data), GFP_KERNEL); > + if (!drv_data) > + return -ENOMEM; > + > + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); > + base = devm_ioremap_resource(&pdev->dev, res); > + if (IS_ERR(base)) > + return PTR_ERR(base); > + > + drv_data->regmap = devm_regmap_init_mmio(dev, base, > + &llcc_regmap_config); > + if (IS_ERR(drv_data->regmap)) > + return PTR_ERR(drv_data->regmap); > + > + ret = regmap_read(drv_data->regmap, LLCC_COMMON_STATUS0, > + &num_banks); > + if (ret) > + return ret; > + > + num_banks &= LLCC_LB_CNT_MASK; > + num_banks >>= LLCC_LB_CNT_SHIFT; > + drv_data->num_banks = num_banks; > + > + 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) > + return -ENOMEM; > + > + for (i = 0; i < num_banks; i++) > + drv_data->offsets[i] = i * BANK_OFFSET_STRIDE; > + > + drv_data->bcast_off = num_banks * 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) > + return -ENOMEM; > + > + drv_data->cfg = llcc_cfg; > + drv_data->cfg_size = sz; > + mutex_init(&drv_data->lock); > + platform_set_drvdata(pdev, drv_data); > + > + return qcom_llcc_cfg_program(pdev); > +} > +EXPORT_SYMBOL_GPL(qcom_llcc_probe); > diff --git a/include/linux/soc/qcom/llcc-qcom.h > b/include/linux/soc/qcom/llcc-qcom.h > new file mode 100644 > index 0000000..7e3b9c6 > --- /dev/null > +++ b/include/linux/soc/qcom/llcc-qcom.h > @@ -0,0 +1,180 @@ > +/* SPDX-License-Identifier: GPL-2.0 */ > +/* > + * Copyright (c) 2017-2018, The Linux Foundation. All rights reserved. > + * > + */ > + > +#include <linux/platform_device.h> > +#ifndef __LLCC_QCOM__ > +#define __LLCC_QCOM__ > + > +#define LLCC_CPUSS 1 > +#define LLCC_VIDSC0 2 > +#define LLCC_VIDSC1 3 > +#define LLCC_ROTATOR 4 > +#define LLCC_VOICE 5 > +#define LLCC_AUDIO 6 > +#define LLCC_MDMHPGRW 7 > +#define LLCC_MDM 8 > +#define LLCC_CMPT 10 > +#define LLCC_GPUHTW 11 > +#define LLCC_GPU 12 > +#define LLCC_MMUHWT 13 > +#define LLCC_CMPTDMA 15 > +#define LLCC_DISP 16 > +#define LLCC_VIDFW 17 > +#define LLCC_MDMHPFX 20 > +#define LLCC_MDMPNG 21 > +#define LLCC_AUDHW 22 > + > +/** > + * llcc_slice_desc - Cache slice descriptor > + * @slice_id: llcc slice id > + * @slice_size: Size allocated for the llcc slice > + */ > +struct llcc_slice_desc { > + u32 slice_id; > + size_t slice_size; > +}; > + > +/** > + * llcc_slice_config - Data associated with the llcc slice > + * @usecase_id: usecase id for which the llcc slice is used > + * @slice_id: llcc slice id assigned to each slice > + * @max_cap: maximum capacity of the llcc slice > + * @priority: priority of the llcc slice > + * @fixed_size: whether the llcc slice can grow beyond its size > + * @bonus_ways: bonus ways associated with llcc slice > + * @res_ways: reserved ways associated with llcc slice > + * @cache_mode: mode of the llcc slice > + * @probe_target_ways: Probe only reserved and bonus ways on a cache miss > + * @dis_cap_alloc: Disable capacity based allocation > + * @retain_on_pc: Retain through power collapse > + * @activate_on_init: activate the slice on init > + */ > +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; > +}; > + > +/** > + * llcc_drv_data - Data associated with the llcc driver > + * @regmap: regmap associated with the llcc device > + * @cfg: pointer to the data structure for slice configuration > + * @lock: mutex associated with each slice > + * @cfg_size: size of the config data table > + * @max_slices: max slices as read from device tree > + * @bcast_off: Offset of the broadcast bank > + * @num_banks: Number of llcc banks > + * @bitmap: Bit map to track the active slice ids > + * @offsets: Pointer to the bank offsets array > + */ > +struct llcc_drv_data { > + struct regmap *regmap; > + const struct llcc_slice_config *cfg; > + struct mutex lock; > + u32 cfg_size; > + u32 max_slices; > + u32 bcast_off; > + u32 num_banks; > + unsigned long *bitmap; > + u32 *offsets; > +}; > + > +#if IS_ENABLED(CONFIG_QCOM_LLCC) > +/** > + * llcc_slice_getd - get llcc slice descriptor > + * @uid: usecase_id of the client > + */ > +struct llcc_slice_desc *llcc_slice_getd(u32 uid); > + > +/** > + * llcc_slice_putd - llcc slice descritpor > + * @desc: Pointer to llcc slice descriptor > + */ > +void llcc_slice_putd(struct llcc_slice_desc *desc); > + > +/** > + * llcc_get_slice_id - get slice id > + * @desc: Pointer to llcc slice descriptor > + */ > +int llcc_get_slice_id(struct llcc_slice_desc *desc); > + > +/** > + * llcc_get_slice_size - llcc slice size > + * @desc: Pointer to llcc slice descriptor > + */ > +size_t llcc_get_slice_size(struct llcc_slice_desc *desc); > + > +/** > + * llcc_slice_activate - Activate the llcc slice > + * @desc: Pointer to llcc slice descriptor > + */ > +int llcc_slice_activate(struct llcc_slice_desc *desc); > + > +/** > + * llcc_slice_deactivate - Deactivate the llcc slice > + * @desc: Pointer to llcc slice descriptor > + */ > +int llcc_slice_deactivate(struct llcc_slice_desc *desc); > + > +/** > + * qcom_llcc_probe - program the sct table > + * @pdev: platform device pointer > + * @table: soc sct table > + * @sz: Size of the config table > + */ > +int qcom_llcc_probe(struct platform_device *pdev, > + const struct llcc_slice_config *table, u32 sz); > +#else > +static inline struct llcc_slice_desc *llcc_slice_getd(u32 uid) > +{ > + return NULL; > +} > + > +static inline void llcc_slice_putd(struct llcc_slice_desc *desc) > +{ > + > +}; > + > +static inline int llcc_get_slice_id(struct llcc_slice_desc *desc) > +{ > + return -EINVAL; > +} > + > +static inline size_t llcc_get_slice_size(struct llcc_slice_desc *desc) > +{ > + return 0; > +} > +static inline int llcc_slice_activate(struct llcc_slice_desc *desc) > +{ > + return -EINVAL; > +} > + > +static inline int llcc_slice_deactivate(struct llcc_slice_desc *desc) > +{ > + return -EINVAL; > +} > +static inline int qcom_llcc_probe(struct platform_device *pdev, > + const struct llcc_slice_config *table, u32 sz) > +{ > + return -ENODEV; > +} > + > +static inline int qcom_llcc_remove(struct platform_device *pdev) > +{ > + return -ENODEV; > +} > +#endif > + > +#endif > -- > The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, > a Linux Foundation Collaborative Project > > -- > To unsubscribe from this list: send the line "unsubscribe linux-arm-msm" in > the body of a message to [email protected] > More majordomo info at http://vger.kernel.org/majordomo-info.html
