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authorBartosz Golaszewski <bartosz.golaszewski@linaro.org>2023-10-17 11:27:18 +0200
committerBjorn Andersson <andersson@kernel.org>2023-10-22 09:14:54 -0700
commitbdac188ec3c71800dd8419620224ee74ef37732a (patch)
tree5f5dd1dff02769f00d9b182a7dd0badf6d66b40e /drivers/firmware/qcom_scm.c
parentba21d6367cc2cca8f25fff3bc94b1b8df55fc261 (diff)
firmware: qcom: move Qualcomm code into its own directory
We're getting more and more qcom specific .c files in drivers/firmware/ and about to get even more. Create a separate directory for Qualcomm firmware drivers and move existing sources in there. Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org> Acked-by: Elliot Berman <quic_eberman@quicinc.com> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Reviewed-by: Maximilian Luz <luzmaximilian@gmail.com> Tested-by: Andrew Halaney <ahalaney@redhat.com> # sc8280xp-lenovo-thinkpad-x13s Link: https://lore.kernel.org/r/20231017092732.19983-2-brgl@bgdev.pl Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Diffstat (limited to 'drivers/firmware/qcom_scm.c')
-rw-r--r--drivers/firmware/qcom_scm.c1943
1 files changed, 0 insertions, 1943 deletions
diff --git a/drivers/firmware/qcom_scm.c b/drivers/firmware/qcom_scm.c
deleted file mode 100644
index 520de9b5633a..000000000000
--- a/drivers/firmware/qcom_scm.c
+++ /dev/null
@@ -1,1943 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/* Copyright (c) 2010,2015,2019 The Linux Foundation. All rights reserved.
- * Copyright (C) 2015 Linaro Ltd.
- */
-
-#include <linux/arm-smccc.h>
-#include <linux/clk.h>
-#include <linux/completion.h>
-#include <linux/cpumask.h>
-#include <linux/dma-mapping.h>
-#include <linux/export.h>
-#include <linux/firmware/qcom/qcom_scm.h>
-#include <linux/init.h>
-#include <linux/interconnect.h>
-#include <linux/interrupt.h>
-#include <linux/module.h>
-#include <linux/of.h>
-#include <linux/of_address.h>
-#include <linux/of_irq.h>
-#include <linux/of_platform.h>
-#include <linux/platform_device.h>
-#include <linux/reset-controller.h>
-#include <linux/types.h>
-
-#include "qcom_scm.h"
-
-static bool download_mode = IS_ENABLED(CONFIG_QCOM_SCM_DOWNLOAD_MODE_DEFAULT);
-module_param(download_mode, bool, 0);
-
-struct qcom_scm {
- struct device *dev;
- struct clk *core_clk;
- struct clk *iface_clk;
- struct clk *bus_clk;
- struct icc_path *path;
- struct completion waitq_comp;
- struct reset_controller_dev reset;
-
- /* control access to the interconnect path */
- struct mutex scm_bw_lock;
- int scm_vote_count;
-
- u64 dload_mode_addr;
-};
-
-struct qcom_scm_current_perm_info {
- __le32 vmid;
- __le32 perm;
- __le64 ctx;
- __le32 ctx_size;
- __le32 unused;
-};
-
-struct qcom_scm_mem_map_info {
- __le64 mem_addr;
- __le64 mem_size;
-};
-
-/**
- * struct qcom_scm_qseecom_resp - QSEECOM SCM call response.
- * @result: Result or status of the SCM call. See &enum qcom_scm_qseecom_result.
- * @resp_type: Type of the response. See &enum qcom_scm_qseecom_resp_type.
- * @data: Response data. The type of this data is given in @resp_type.
- */
-struct qcom_scm_qseecom_resp {
- u64 result;
- u64 resp_type;
- u64 data;
-};
-
-enum qcom_scm_qseecom_result {
- QSEECOM_RESULT_SUCCESS = 0,
- QSEECOM_RESULT_INCOMPLETE = 1,
- QSEECOM_RESULT_BLOCKED_ON_LISTENER = 2,
- QSEECOM_RESULT_FAILURE = 0xFFFFFFFF,
-};
-
-enum qcom_scm_qseecom_resp_type {
- QSEECOM_SCM_RES_APP_ID = 0xEE01,
- QSEECOM_SCM_RES_QSEOS_LISTENER_ID = 0xEE02,
-};
-
-enum qcom_scm_qseecom_tz_owner {
- QSEECOM_TZ_OWNER_SIP = 2,
- QSEECOM_TZ_OWNER_TZ_APPS = 48,
- QSEECOM_TZ_OWNER_QSEE_OS = 50
-};
-
-enum qcom_scm_qseecom_tz_svc {
- QSEECOM_TZ_SVC_APP_ID_PLACEHOLDER = 0,
- QSEECOM_TZ_SVC_APP_MGR = 1,
- QSEECOM_TZ_SVC_INFO = 6,
-};
-
-enum qcom_scm_qseecom_tz_cmd_app {
- QSEECOM_TZ_CMD_APP_SEND = 1,
- QSEECOM_TZ_CMD_APP_LOOKUP = 3,
-};
-
-enum qcom_scm_qseecom_tz_cmd_info {
- QSEECOM_TZ_CMD_INFO_VERSION = 3,
-};
-
-#define QSEECOM_MAX_APP_NAME_SIZE 64
-
-/* Each bit configures cold/warm boot address for one of the 4 CPUs */
-static const u8 qcom_scm_cpu_cold_bits[QCOM_SCM_BOOT_MAX_CPUS] = {
- 0, BIT(0), BIT(3), BIT(5)
-};
-static const u8 qcom_scm_cpu_warm_bits[QCOM_SCM_BOOT_MAX_CPUS] = {
- BIT(2), BIT(1), BIT(4), BIT(6)
-};
-
-#define QCOM_SMC_WAITQ_FLAG_WAKE_ONE BIT(0)
-#define QCOM_SMC_WAITQ_FLAG_WAKE_ALL BIT(1)
-
-static const char * const qcom_scm_convention_names[] = {
- [SMC_CONVENTION_UNKNOWN] = "unknown",
- [SMC_CONVENTION_ARM_32] = "smc arm 32",
- [SMC_CONVENTION_ARM_64] = "smc arm 64",
- [SMC_CONVENTION_LEGACY] = "smc legacy",
-};
-
-static struct qcom_scm *__scm;
-
-static int qcom_scm_clk_enable(void)
-{
- int ret;
-
- ret = clk_prepare_enable(__scm->core_clk);
- if (ret)
- goto bail;
-
- ret = clk_prepare_enable(__scm->iface_clk);
- if (ret)
- goto disable_core;
-
- ret = clk_prepare_enable(__scm->bus_clk);
- if (ret)
- goto disable_iface;
-
- return 0;
-
-disable_iface:
- clk_disable_unprepare(__scm->iface_clk);
-disable_core:
- clk_disable_unprepare(__scm->core_clk);
-bail:
- return ret;
-}
-
-static void qcom_scm_clk_disable(void)
-{
- clk_disable_unprepare(__scm->core_clk);
- clk_disable_unprepare(__scm->iface_clk);
- clk_disable_unprepare(__scm->bus_clk);
-}
-
-static int qcom_scm_bw_enable(void)
-{
- int ret = 0;
-
- if (!__scm->path)
- return 0;
-
- if (IS_ERR(__scm->path))
- return -EINVAL;
-
- mutex_lock(&__scm->scm_bw_lock);
- if (!__scm->scm_vote_count) {
- ret = icc_set_bw(__scm->path, 0, UINT_MAX);
- if (ret < 0) {
- dev_err(__scm->dev, "failed to set bandwidth request\n");
- goto err_bw;
- }
- }
- __scm->scm_vote_count++;
-err_bw:
- mutex_unlock(&__scm->scm_bw_lock);
-
- return ret;
-}
-
-static void qcom_scm_bw_disable(void)
-{
- if (IS_ERR_OR_NULL(__scm->path))
- return;
-
- mutex_lock(&__scm->scm_bw_lock);
- if (__scm->scm_vote_count-- == 1)
- icc_set_bw(__scm->path, 0, 0);
- mutex_unlock(&__scm->scm_bw_lock);
-}
-
-enum qcom_scm_convention qcom_scm_convention = SMC_CONVENTION_UNKNOWN;
-static DEFINE_SPINLOCK(scm_query_lock);
-
-static enum qcom_scm_convention __get_convention(void)
-{
- unsigned long flags;
- struct qcom_scm_desc desc = {
- .svc = QCOM_SCM_SVC_INFO,
- .cmd = QCOM_SCM_INFO_IS_CALL_AVAIL,
- .args[0] = SCM_SMC_FNID(QCOM_SCM_SVC_INFO,
- QCOM_SCM_INFO_IS_CALL_AVAIL) |
- (ARM_SMCCC_OWNER_SIP << ARM_SMCCC_OWNER_SHIFT),
- .arginfo = QCOM_SCM_ARGS(1),
- .owner = ARM_SMCCC_OWNER_SIP,
- };
- struct qcom_scm_res res;
- enum qcom_scm_convention probed_convention;
- int ret;
- bool forced = false;
-
- if (likely(qcom_scm_convention != SMC_CONVENTION_UNKNOWN))
- return qcom_scm_convention;
-
- /*
- * Per the "SMC calling convention specification", the 64-bit calling
- * convention can only be used when the client is 64-bit, otherwise
- * system will encounter the undefined behaviour.
- */
-#if IS_ENABLED(CONFIG_ARM64)
- /*
- * Device isn't required as there is only one argument - no device
- * needed to dma_map_single to secure world
- */
- probed_convention = SMC_CONVENTION_ARM_64;
- ret = __scm_smc_call(NULL, &desc, probed_convention, &res, true);
- if (!ret && res.result[0] == 1)
- goto found;
-
- /*
- * Some SC7180 firmwares didn't implement the
- * QCOM_SCM_INFO_IS_CALL_AVAIL call, so we fallback to forcing ARM_64
- * calling conventions on these firmwares. Luckily we don't make any
- * early calls into the firmware on these SoCs so the device pointer
- * will be valid here to check if the compatible matches.
- */
- if (of_device_is_compatible(__scm ? __scm->dev->of_node : NULL, "qcom,scm-sc7180")) {
- forced = true;
- goto found;
- }
-#endif
-
- probed_convention = SMC_CONVENTION_ARM_32;
- ret = __scm_smc_call(NULL, &desc, probed_convention, &res, true);
- if (!ret && res.result[0] == 1)
- goto found;
-
- probed_convention = SMC_CONVENTION_LEGACY;
-found:
- spin_lock_irqsave(&scm_query_lock, flags);
- if (probed_convention != qcom_scm_convention) {
- qcom_scm_convention = probed_convention;
- pr_info("qcom_scm: convention: %s%s\n",
- qcom_scm_convention_names[qcom_scm_convention],
- forced ? " (forced)" : "");
- }
- spin_unlock_irqrestore(&scm_query_lock, flags);
-
- return qcom_scm_convention;
-}
-
-/**
- * qcom_scm_call() - Invoke a syscall in the secure world
- * @dev: device
- * @desc: Descriptor structure containing arguments and return values
- * @res: Structure containing results from SMC/HVC call
- *
- * Sends a command to the SCM and waits for the command to finish processing.
- * This should *only* be called in pre-emptible context.
- */
-static int qcom_scm_call(struct device *dev, const struct qcom_scm_desc *desc,
- struct qcom_scm_res *res)
-{
- might_sleep();
- switch (__get_convention()) {
- case SMC_CONVENTION_ARM_32:
- case SMC_CONVENTION_ARM_64:
- return scm_smc_call(dev, desc, res, false);
- case SMC_CONVENTION_LEGACY:
- return scm_legacy_call(dev, desc, res);
- default:
- pr_err("Unknown current SCM calling convention.\n");
- return -EINVAL;
- }
-}
-
-/**
- * qcom_scm_call_atomic() - atomic variation of qcom_scm_call()
- * @dev: device
- * @desc: Descriptor structure containing arguments and return values
- * @res: Structure containing results from SMC/HVC call
- *
- * Sends a command to the SCM and waits for the command to finish processing.
- * This can be called in atomic context.
- */
-static int qcom_scm_call_atomic(struct device *dev,
- const struct qcom_scm_desc *desc,
- struct qcom_scm_res *res)
-{
- switch (__get_convention()) {
- case SMC_CONVENTION_ARM_32:
- case SMC_CONVENTION_ARM_64:
- return scm_smc_call(dev, desc, res, true);
- case SMC_CONVENTION_LEGACY:
- return scm_legacy_call_atomic(dev, desc, res);
- default:
- pr_err("Unknown current SCM calling convention.\n");
- return -EINVAL;
- }
-}
-
-static bool __qcom_scm_is_call_available(struct device *dev, u32 svc_id,
- u32 cmd_id)
-{
- int ret;
- struct qcom_scm_desc desc = {
- .svc = QCOM_SCM_SVC_INFO,
- .cmd = QCOM_SCM_INFO_IS_CALL_AVAIL,
- .owner = ARM_SMCCC_OWNER_SIP,
- };
- struct qcom_scm_res res;
-
- desc.arginfo = QCOM_SCM_ARGS(1);
- switch (__get_convention()) {
- case SMC_CONVENTION_ARM_32:
- case SMC_CONVENTION_ARM_64:
- desc.args[0] = SCM_SMC_FNID(svc_id, cmd_id) |
- (ARM_SMCCC_OWNER_SIP << ARM_SMCCC_OWNER_SHIFT);
- break;
- case SMC_CONVENTION_LEGACY:
- desc.args[0] = SCM_LEGACY_FNID(svc_id, cmd_id);
- break;
- default:
- pr_err("Unknown SMC convention being used\n");
- return false;
- }
-
- ret = qcom_scm_call(dev, &desc, &res);
-
- return ret ? false : !!res.result[0];
-}
-
-static int qcom_scm_set_boot_addr(void *entry, const u8 *cpu_bits)
-{
- int cpu;
- unsigned int flags = 0;
- struct qcom_scm_desc desc = {
- .svc = QCOM_SCM_SVC_BOOT,
- .cmd = QCOM_SCM_BOOT_SET_ADDR,
- .arginfo = QCOM_SCM_ARGS(2),
- .owner = ARM_SMCCC_OWNER_SIP,
- };
-
- for_each_present_cpu(cpu) {
- if (cpu >= QCOM_SCM_BOOT_MAX_CPUS)
- return -EINVAL;
- flags |= cpu_bits[cpu];
- }
-
- desc.args[0] = flags;
- desc.args[1] = virt_to_phys(entry);
-
- return qcom_scm_call_atomic(__scm ? __scm->dev : NULL, &desc, NULL);
-}
-
-static int qcom_scm_set_boot_addr_mc(void *entry, unsigned int flags)
-{
- struct qcom_scm_desc desc = {
- .svc = QCOM_SCM_SVC_BOOT,
- .cmd = QCOM_SCM_BOOT_SET_ADDR_MC,
- .owner = ARM_SMCCC_OWNER_SIP,
- .arginfo = QCOM_SCM_ARGS(6),
- .args = {
- virt_to_phys(entry),
- /* Apply to all CPUs in all affinity levels */
- ~0ULL, ~0ULL, ~0ULL, ~0ULL,
- flags,
- },
- };
-
- /* Need a device for DMA of the additional arguments */
- if (!__scm || __get_convention() == SMC_CONVENTION_LEGACY)
- return -EOPNOTSUPP;
-
- return qcom_scm_call(__scm->dev, &desc, NULL);
-}
-
-/**
- * qcom_scm_set_warm_boot_addr() - Set the warm boot address for all cpus
- * @entry: Entry point function for the cpus
- *
- * Set the Linux entry point for the SCM to transfer control to when coming
- * out of a power down. CPU power down may be executed on cpuidle or hotplug.
- */
-int qcom_scm_set_warm_boot_addr(void *entry)
-{
- if (qcom_scm_set_boot_addr_mc(entry, QCOM_SCM_BOOT_MC_FLAG_WARMBOOT))
- /* Fallback to old SCM call */
- return qcom_scm_set_boot_addr(entry, qcom_scm_cpu_warm_bits);
- return 0;
-}
-EXPORT_SYMBOL_GPL(qcom_scm_set_warm_boot_addr);
-
-/**
- * qcom_scm_set_cold_boot_addr() - Set the cold boot address for all cpus
- * @entry: Entry point function for the cpus
- */
-int qcom_scm_set_cold_boot_addr(void *entry)
-{
- if (qcom_scm_set_boot_addr_mc(entry, QCOM_SCM_BOOT_MC_FLAG_COLDBOOT))
- /* Fallback to old SCM call */
- return qcom_scm_set_boot_addr(entry, qcom_scm_cpu_cold_bits);
- return 0;
-}
-EXPORT_SYMBOL_GPL(qcom_scm_set_cold_boot_addr);
-
-/**
- * qcom_scm_cpu_power_down() - Power down the cpu
- * @flags: Flags to flush cache
- *
- * This is an end point to power down cpu. If there was a pending interrupt,
- * the control would return from this function, otherwise, the cpu jumps to the
- * warm boot entry point set for this cpu upon reset.
- */
-void qcom_scm_cpu_power_down(u32 flags)
-{
- struct qcom_scm_desc desc = {
- .svc = QCOM_SCM_SVC_BOOT,
- .cmd = QCOM_SCM_BOOT_TERMINATE_PC,
- .args[0] = flags & QCOM_SCM_FLUSH_FLAG_MASK,
- .arginfo = QCOM_SCM_ARGS(1),
- .owner = ARM_SMCCC_OWNER_SIP,
- };
-
- qcom_scm_call_atomic(__scm ? __scm->dev : NULL, &desc, NULL);
-}
-EXPORT_SYMBOL_GPL(qcom_scm_cpu_power_down);
-
-int qcom_scm_set_remote_state(u32 state, u32 id)
-{
- struct qcom_scm_desc desc = {
- .svc = QCOM_SCM_SVC_BOOT,
- .cmd = QCOM_SCM_BOOT_SET_REMOTE_STATE,
- .arginfo = QCOM_SCM_ARGS(2),
- .args[0] = state,
- .args[1] = id,
- .owner = ARM_SMCCC_OWNER_SIP,
- };
- struct qcom_scm_res res;
- int ret;
-
- ret = qcom_scm_call(__scm->dev, &desc, &res);
-
- return ret ? : res.result[0];
-}
-EXPORT_SYMBOL_GPL(qcom_scm_set_remote_state);
-
-static int qcom_scm_disable_sdi(void)
-{
- int ret;
- struct qcom_scm_desc desc = {
- .svc = QCOM_SCM_SVC_BOOT,
- .cmd = QCOM_SCM_BOOT_SDI_CONFIG,
- .args[0] = 1, /* Disable watchdog debug */
- .args[1] = 0, /* Disable SDI */
- .arginfo = QCOM_SCM_ARGS(2),
- .owner = ARM_SMCCC_OWNER_SIP,
- };
- struct qcom_scm_res res;
-
- ret = qcom_scm_clk_enable();
- if (ret)
- return ret;
- ret = qcom_scm_call(__scm->dev, &desc, &res);
-
- qcom_scm_clk_disable();
-
- return ret ? : res.result[0];
-}
-
-static int __qcom_scm_set_dload_mode(struct device *dev, bool enable)
-{
- struct qcom_scm_desc desc = {
- .svc = QCOM_SCM_SVC_BOOT,
- .cmd = QCOM_SCM_BOOT_SET_DLOAD_MODE,
- .arginfo = QCOM_SCM_ARGS(2),
- .args[0] = QCOM_SCM_BOOT_SET_DLOAD_MODE,
- .owner = ARM_SMCCC_OWNER_SIP,
- };
-
- desc.args[1] = enable ? QCOM_SCM_BOOT_SET_DLOAD_MODE : 0;
-
- return qcom_scm_call_atomic(__scm->dev, &desc, NULL);
-}
-
-static void qcom_scm_set_download_mode(bool enable)
-{
- bool avail;
- int ret = 0;
-
- avail = __qcom_scm_is_call_available(__scm->dev,
- QCOM_SCM_SVC_BOOT,
- QCOM_SCM_BOOT_SET_DLOAD_MODE);
- if (avail) {
- ret = __qcom_scm_set_dload_mode(__scm->dev, enable);
- } else if (__scm->dload_mode_addr) {
- ret = qcom_scm_io_writel(__scm->dload_mode_addr,
- enable ? QCOM_SCM_BOOT_SET_DLOAD_MODE : 0);
- } else {
- dev_err(__scm->dev,
- "No available mechanism for setting download mode\n");
- }
-
- if (ret)
- dev_err(__scm->dev, "failed to set download mode: %d\n", ret);
-}
-
-/**
- * qcom_scm_pas_init_image() - Initialize peripheral authentication service
- * state machine for a given peripheral, using the
- * metadata
- * @peripheral: peripheral id
- * @metadata: pointer to memory containing ELF header, program header table
- * and optional blob of data used for authenticating the metadata
- * and the rest of the firmware
- * @size: size of the metadata
- * @ctx: optional metadata context
- *
- * Return: 0 on success.
- *
- * Upon successful return, the PAS metadata context (@ctx) will be used to
- * track the metadata allocation, this needs to be released by invoking
- * qcom_scm_pas_metadata_release() by the caller.
- */
-int qcom_scm_pas_init_image(u32 peripheral, const void *metadata, size_t size,
- struct qcom_scm_pas_metadata *ctx)
-{
- dma_addr_t mdata_phys;
- void *mdata_buf;
- int ret;
- struct qcom_scm_desc desc = {
- .svc = QCOM_SCM_SVC_PIL,
- .cmd = QCOM_SCM_PIL_PAS_INIT_IMAGE,
- .arginfo = QCOM_SCM_ARGS(2, QCOM_SCM_VAL, QCOM_SCM_RW),
- .args[0] = peripheral,
- .owner = ARM_SMCCC_OWNER_SIP,
- };
- struct qcom_scm_res res;
-
- /*
- * During the scm call memory protection will be enabled for the meta
- * data blob, so make sure it's physically contiguous, 4K aligned and
- * non-cachable to avoid XPU violations.
- */
- mdata_buf = dma_alloc_coherent(__scm->dev, size, &mdata_phys,
- GFP_KERNEL);
- if (!mdata_buf) {
- dev_err(__scm->dev, "Allocation of metadata buffer failed.\n");
- return -ENOMEM;
- }
- memcpy(mdata_buf, metadata, size);
-
- ret = qcom_scm_clk_enable();
- if (ret)
- goto out;
-
- ret = qcom_scm_bw_enable();
- if (ret)
- return ret;
-
- desc.args[1] = mdata_phys;
-
- ret = qcom_scm_call(__scm->dev, &desc, &res);
-
- qcom_scm_bw_disable();
- qcom_scm_clk_disable();
-
-out:
- if (ret < 0 || !ctx) {
- dma_free_coherent(__scm->dev, size, mdata_buf, mdata_phys);
- } else if (ctx) {
- ctx->ptr = mdata_buf;
- ctx->phys = mdata_phys;
- ctx->size = size;
- }
-
- return ret ? : res.result[0];
-}
-EXPORT_SYMBOL_GPL(qcom_scm_pas_init_image);
-
-/**
- * qcom_scm_pas_metadata_release() - release metadata context
- * @ctx: metadata context
- */
-void qcom_scm_pas_metadata_release(struct qcom_scm_pas_metadata *ctx)
-{
- if (!ctx->ptr)
- return;
-
- dma_free_coherent(__scm->dev, ctx->size, ctx->ptr, ctx->phys);
-
- ctx->ptr = NULL;
- ctx->phys = 0;
- ctx->size = 0;
-}
-EXPORT_SYMBOL_GPL(qcom_scm_pas_metadata_release);
-
-/**
- * qcom_scm_pas_mem_setup() - Prepare the memory related to a given peripheral
- * for firmware loading
- * @peripheral: peripheral id
- * @addr: start address of memory area to prepare
- * @size: size of the memory area to prepare
- *
- * Returns 0 on success.
- */
-int qcom_scm_pas_mem_setup(u32 peripheral, phys_addr_t addr, phys_addr_t size)
-{
- int ret;
- struct qcom_scm_desc desc = {
- .svc = QCOM_SCM_SVC_PIL,
- .cmd = QCOM_SCM_PIL_PAS_MEM_SETUP,
- .arginfo = QCOM_SCM_ARGS(3),
- .args[0] = peripheral,
- .args[1] = addr,
- .args[2] = size,
- .owner = ARM_SMCCC_OWNER_SIP,
- };
- struct qcom_scm_res res;
-
- ret = qcom_scm_clk_enable();
- if (ret)
- return ret;
-
- ret = qcom_scm_bw_enable();
- if (ret)
- return ret;
-
- ret = qcom_scm_call(__scm->dev, &desc, &res);
- qcom_scm_bw_disable();
- qcom_scm_clk_disable();
-
- return ret ? : res.result[0];
-}
-EXPORT_SYMBOL_GPL(qcom_scm_pas_mem_setup);
-
-/**
- * qcom_scm_pas_auth_and_reset() - Authenticate the given peripheral firmware
- * and reset the remote processor
- * @peripheral: peripheral id
- *
- * Return 0 on success.
- */
-int qcom_scm_pas_auth_and_reset(u32 peripheral)
-{
- int ret;
- struct qcom_scm_desc desc = {
- .svc = QCOM_SCM_SVC_PIL,
- .cmd = QCOM_SCM_PIL_PAS_AUTH_AND_RESET,
- .arginfo = QCOM_SCM_ARGS(1),
- .args[0] = peripheral,
- .owner = ARM_SMCCC_OWNER_SIP,
- };
- struct qcom_scm_res res;
-
- ret = qcom_scm_clk_enable();
- if (ret)
- return ret;
-
- ret = qcom_scm_bw_enable();
- if (ret)
- return ret;
-
- ret = qcom_scm_call(__scm->dev, &desc, &res);
- qcom_scm_bw_disable();
- qcom_scm_clk_disable();
-
- return ret ? : res.result[0];
-}
-EXPORT_SYMBOL_GPL(qcom_scm_pas_auth_and_reset);
-
-/**
- * qcom_scm_pas_shutdown() - Shut down the remote processor
- * @peripheral: peripheral id
- *
- * Returns 0 on success.
- */
-int qcom_scm_pas_shutdown(u32 peripheral)
-{
- int ret;
- struct qcom_scm_desc desc = {
- .svc = QCOM_SCM_SVC_PIL,
- .cmd = QCOM_SCM_PIL_PAS_SHUTDOWN,
- .arginfo = QCOM_SCM_ARGS(1),
- .args[0] = peripheral,
- .owner = ARM_SMCCC_OWNER_SIP,
- };
- struct qcom_scm_res res;
-
- ret = qcom_scm_clk_enable();
- if (ret)
- return ret;
-
- ret = qcom_scm_bw_enable();
- if (ret)
- return ret;
-
- ret = qcom_scm_call(__scm->dev, &desc, &res);
-
- qcom_scm_bw_disable();
- qcom_scm_clk_disable();
-
- return ret ? : res.result[0];
-}
-EXPORT_SYMBOL_GPL(qcom_scm_pas_shutdown);
-
-/**
- * qcom_scm_pas_supported() - Check if the peripheral authentication service is
- * available for the given peripherial
- * @peripheral: peripheral id
- *
- * Returns true if PAS is supported for this peripheral, otherwise false.
- */
-bool qcom_scm_pas_supported(u32 peripheral)
-{
- int ret;
- struct qcom_scm_desc desc = {
- .svc = QCOM_SCM_SVC_PIL,
- .cmd = QCOM_SCM_PIL_PAS_IS_SUPPORTED,
- .arginfo = QCOM_SCM_ARGS(1),
- .args[0] = peripheral,
- .owner = ARM_SMCCC_OWNER_SIP,
- };
- struct qcom_scm_res res;
-
- if (!__qcom_scm_is_call_available(__scm->dev, QCOM_SCM_SVC_PIL,
- QCOM_SCM_PIL_PAS_IS_SUPPORTED))
- return false;
-
- ret = qcom_scm_call(__scm->dev, &desc, &res);
-
- return ret ? false : !!res.result[0];
-}
-EXPORT_SYMBOL_GPL(qcom_scm_pas_supported);
-
-static int __qcom_scm_pas_mss_reset(struct device *dev, bool reset)
-{
- struct qcom_scm_desc desc = {
- .svc = QCOM_SCM_SVC_PIL,
- .cmd = QCOM_SCM_PIL_PAS_MSS_RESET,
- .arginfo = QCOM_SCM_ARGS(2),
- .args[0] = reset,
- .args[1] = 0,
- .owner = ARM_SMCCC_OWNER_SIP,
- };
- struct qcom_scm_res res;
- int ret;
-
- ret = qcom_scm_call(__scm->dev, &desc, &res);
-
- return ret ? : res.result[0];
-}
-
-static int qcom_scm_pas_reset_assert(struct reset_controller_dev *rcdev,
- unsigned long idx)
-{
- if (idx != 0)
- return -EINVAL;
-
- return __qcom_scm_pas_mss_reset(__scm->dev, 1);
-}
-
-static int qcom_scm_pas_reset_deassert(struct reset_controller_dev *rcdev,
- unsigned long idx)
-{
- if (idx != 0)
- return -EINVAL;
-
- return __qcom_scm_pas_mss_reset(__scm->dev, 0);
-}
-
-static const struct reset_control_ops qcom_scm_pas_reset_ops = {
- .assert = qcom_scm_pas_reset_assert,
- .deassert = qcom_scm_pas_reset_deassert,
-};
-
-int qcom_scm_io_readl(phys_addr_t addr, unsigned int *val)
-{
- struct qcom_scm_desc desc = {
- .svc = QCOM_SCM_SVC_IO,
- .cmd = QCOM_SCM_IO_READ,
- .arginfo = QCOM_SCM_ARGS(1),
- .args[0] = addr,
- .owner = ARM_SMCCC_OWNER_SIP,
- };
- struct qcom_scm_res res;
- int ret;
-
-
- ret = qcom_scm_call_atomic(__scm->dev, &desc, &res);
- if (ret >= 0)
- *val = res.result[0];
-
- return ret < 0 ? ret : 0;
-}
-EXPORT_SYMBOL_GPL(qcom_scm_io_readl);
-
-int qcom_scm_io_writel(phys_addr_t addr, unsigned int val)
-{
- struct qcom_scm_desc desc = {
- .svc = QCOM_SCM_SVC_IO,
- .cmd = QCOM_SCM_IO_WRITE,
- .arginfo = QCOM_SCM_ARGS(2),
- .args[0] = addr,
- .args[1] = val,
- .owner = ARM_SMCCC_OWNER_SIP,
- };
-
- return qcom_scm_call_atomic(__scm->dev, &desc, NULL);
-}
-EXPORT_SYMBOL_GPL(qcom_scm_io_writel);
-
-/**
- * qcom_scm_restore_sec_cfg_available() - Check if secure environment
- * supports restore security config interface.
- *
- * Return true if restore-cfg interface is supported, false if not.
- */
-bool qcom_scm_restore_sec_cfg_available(void)
-{
- return __qcom_scm_is_call_available(__scm->dev, QCOM_SCM_SVC_MP,
- QCOM_SCM_MP_RESTORE_SEC_CFG);
-}
-EXPORT_SYMBOL_GPL(qcom_scm_restore_sec_cfg_available);
-
-int qcom_scm_restore_sec_cfg(u32 device_id, u32 spare)
-{
- struct qcom_scm_desc desc = {
- .svc = QCOM_SCM_SVC_MP,
- .cmd = QCOM_SCM_MP_RESTORE_SEC_CFG,
- .arginfo = QCOM_SCM_ARGS(2),
- .args[0] = device_id,
- .args[1] = spare,
- .owner = ARM_SMCCC_OWNER_SIP,
- };
- struct qcom_scm_res res;
- int ret;
-
- ret = qcom_scm_call(__scm->dev, &desc, &res);
-
- return ret ? : res.result[0];
-}
-EXPORT_SYMBOL_GPL(qcom_scm_restore_sec_cfg);
-
-int qcom_scm_iommu_secure_ptbl_size(u32 spare, size_t *size)
-{
- struct qcom_scm_desc desc = {
- .svc = QCOM_SCM_SVC_MP,
- .cmd = QCOM_SCM_MP_IOMMU_SECURE_PTBL_SIZE,
- .arginfo = QCOM_SCM_ARGS(1),
- .args[0] = spare,
- .owner = ARM_SMCCC_OWNER_SIP,
- };
- struct qcom_scm_res res;
- int ret;
-
- ret = qcom_scm_call(__scm->dev, &desc, &res);
-
- if (size)
- *size = res.result[0];
-
- return ret ? : res.result[1];
-}
-EXPORT_SYMBOL_GPL(qcom_scm_iommu_secure_ptbl_size);
-
-int qcom_scm_iommu_secure_ptbl_init(u64 addr, u32 size, u32 spare)
-{
- struct qcom_scm_desc desc = {
- .svc = QCOM_SCM_SVC_MP,
- .cmd = QCOM_SCM_MP_IOMMU_SECURE_PTBL_INIT,
- .arginfo = QCOM_SCM_ARGS(3, QCOM_SCM_RW, QCOM_SCM_VAL,
- QCOM_SCM_VAL),
- .args[0] = addr,
- .args[1] = size,
- .args[2] = spare,
- .owner = ARM_SMCCC_OWNER_SIP,
- };
- int ret;
-
- ret = qcom_scm_call(__scm->dev, &desc, NULL);
-
- /* the pg table has been initialized already, ignore the error */
- if (ret == -EPERM)
- ret = 0;
-
- return ret;
-}
-EXPORT_SYMBOL_GPL(qcom_scm_iommu_secure_ptbl_init);
-
-int qcom_scm_iommu_set_cp_pool_size(u32 spare, u32 size)
-{
- struct qcom_scm_desc desc = {
- .svc = QCOM_SCM_SVC_MP,
- .cmd = QCOM_SCM_MP_IOMMU_SET_CP_POOL_SIZE,
- .arginfo = QCOM_SCM_ARGS(2),
- .args[0] = size,
- .args[1] = spare,
- .owner = ARM_SMCCC_OWNER_SIP,
- };
-
- return qcom_scm_call(__scm->dev, &desc, NULL);
-}
-EXPORT_SYMBOL_GPL(qcom_scm_iommu_set_cp_pool_size);
-
-int qcom_scm_mem_protect_video_var(u32 cp_start, u32 cp_size,
- u32 cp_nonpixel_start,
- u32 cp_nonpixel_size)
-{
- int ret;
- struct qcom_scm_desc desc = {
- .svc = QCOM_SCM_SVC_MP,
- .cmd = QCOM_SCM_MP_VIDEO_VAR,
- .arginfo = QCOM_SCM_ARGS(4, QCOM_SCM_VAL, QCOM_SCM_VAL,
- QCOM_SCM_VAL, QCOM_SCM_VAL),
- .args[0] = cp_start,
- .args[1] = cp_size,
- .args[2] = cp_nonpixel_start,
- .args[3] = cp_nonpixel_size,
- .owner = ARM_SMCCC_OWNER_SIP,
- };
- struct qcom_scm_res res;
-
- ret = qcom_scm_call(__scm->dev, &desc, &res);
-
- return ret ? : res.result[0];
-}
-EXPORT_SYMBOL_GPL(qcom_scm_mem_protect_video_var);
-
-static int __qcom_scm_assign_mem(struct device *dev, phys_addr_t mem_region,
- size_t mem_sz, phys_addr_t src, size_t src_sz,
- phys_addr_t dest, size_t dest_sz)
-{
- int ret;
- struct qcom_scm_desc desc = {
- .svc = QCOM_SCM_SVC_MP,
- .cmd = QCOM_SCM_MP_ASSIGN,
- .arginfo = QCOM_SCM_ARGS(7, QCOM_SCM_RO, QCOM_SCM_VAL,
- QCOM_SCM_RO, QCOM_SCM_VAL, QCOM_SCM_RO,
- QCOM_SCM_VAL, QCOM_SCM_VAL),
- .args[0] = mem_region,
- .args[1] = mem_sz,
- .args[2] = src,
- .args[3] = src_sz,
- .args[4] = dest,
- .args[5] = dest_sz,
- .args[6] = 0,
- .owner = ARM_SMCCC_OWNER_SIP,
- };
- struct qcom_scm_res res;
-
- ret = qcom_scm_call(dev, &desc, &res);
-
- return ret ? : res.result[0];
-}
-
-/**
- * qcom_scm_assign_mem() - Make a secure call to reassign memory ownership
- * @mem_addr: mem region whose ownership need to be reassigned
- * @mem_sz: size of the region.
- * @srcvm: vmid for current set of owners, each set bit in
- * flag indicate a unique owner
- * @newvm: array having new owners and corresponding permission
- * flags
- * @dest_cnt: number of owners in next set.
- *
- * Return negative errno on failure or 0 on success with @srcvm updated.
- */
-int qcom_scm_assign_mem(phys_addr_t mem_addr, size_t mem_sz,
- u64 *srcvm,
- const struct qcom_scm_vmperm *newvm,
- unsigned int dest_cnt)
-{
- struct qcom_scm_current_perm_info *destvm;
- struct qcom_scm_mem_map_info *mem_to_map;
- phys_addr_t mem_to_map_phys;
- phys_addr_t dest_phys;
- dma_addr_t ptr_phys;
- size_t mem_to_map_sz;
- size_t dest_sz;
- size_t src_sz;
- size_t ptr_sz;
- int next_vm;
- __le32 *src;
- void *ptr;
- int ret, i, b;
- u64 srcvm_bits = *srcvm;
-
- src_sz = hweight64(srcvm_bits) * sizeof(*src);
- mem_to_map_sz = sizeof(*mem_to_map);
- dest_sz = dest_cnt * sizeof(*destvm);
- ptr_sz = ALIGN(src_sz, SZ_64) + ALIGN(mem_to_map_sz, SZ_64) +
- ALIGN(dest_sz, SZ_64);
-
- ptr = dma_alloc_coherent(__scm->dev, ptr_sz, &ptr_phys, GFP_KERNEL);
- if (!ptr)
- return -ENOMEM;
-
- /* Fill source vmid detail */
- src = ptr;
- i = 0;
- for (b = 0; b < BITS_PER_TYPE(u64); b++) {
- if (srcvm_bits & BIT(b))
- src[i++] = cpu_to_le32(b);
- }
-
- /* Fill details of mem buff to map */
- mem_to_map = ptr + ALIGN(src_sz, SZ_64);
- mem_to_map_phys = ptr_phys + ALIGN(src_sz, SZ_64);
- mem_to_map->mem_addr = cpu_to_le64(mem_addr);
- mem_to_map->mem_size = cpu_to_le64(mem_sz);
-
- next_vm = 0;
- /* Fill details of next vmid detail */
- destvm = ptr + ALIGN(mem_to_map_sz, SZ_64) + ALIGN(src_sz, SZ_64);
- dest_phys = ptr_phys + ALIGN(mem_to_map_sz, SZ_64) + ALIGN(src_sz, SZ_64);
- for (i = 0; i < dest_cnt; i++, destvm++, newvm++) {
- destvm->vmid = cpu_to_le32(newvm->vmid);
- destvm->perm = cpu_to_le32(newvm->perm);
- destvm->ctx = 0;
- destvm->ctx_size = 0;
- next_vm |= BIT(newvm->vmid);
- }
-
- ret = __qcom_scm_assign_mem(__scm->dev, mem_to_map_phys, mem_to_map_sz,
- ptr_phys, src_sz, dest_phys, dest_sz);
- dma_free_coherent(__scm->dev, ptr_sz, ptr, ptr_phys);
- if (ret) {
- dev_err(__scm->dev,
- "Assign memory protection call failed %d\n", ret);
- return -EINVAL;
- }
-
- *srcvm = next_vm;
- return 0;
-}
-EXPORT_SYMBOL_GPL(qcom_scm_assign_mem);
-
-/**
- * qcom_scm_ocmem_lock_available() - is OCMEM lock/unlock interface available
- */
-bool qcom_scm_ocmem_lock_available(void)
-{
- return __qcom_scm_is_call_available(__scm->dev, QCOM_SCM_SVC_OCMEM,
- QCOM_SCM_OCMEM_LOCK_CMD);
-}
-EXPORT_SYMBOL_GPL(qcom_scm_ocmem_lock_available);
-
-/**
- * qcom_scm_ocmem_lock() - call OCMEM lock interface to assign an OCMEM
- * region to the specified initiator
- *
- * @id: tz initiator id
- * @offset: OCMEM offset
- * @size: OCMEM size
- * @mode: access mode (WIDE/NARROW)
- */
-int qcom_scm_ocmem_lock(enum qcom_scm_ocmem_client id, u32 offset, u32 size,
- u32 mode)
-{
- struct qcom_scm_desc desc = {
- .svc = QCOM_SCM_SVC_OCMEM,
- .cmd = QCOM_SCM_OCMEM_LOCK_CMD,
- .args[0] = id,
- .args[1] = offset,
- .args[2] = size,
- .args[3] = mode,
- .arginfo = QCOM_SCM_ARGS(4),
- };
-
- return qcom_scm_call(__scm->dev, &desc, NULL);
-}
-EXPORT_SYMBOL_GPL(qcom_scm_ocmem_lock);
-
-/**
- * qcom_scm_ocmem_unlock() - call OCMEM unlock interface to release an OCMEM
- * region from the specified initiator
- *
- * @id: tz initiator id
- * @offset: OCMEM offset
- * @size: OCMEM size
- */
-int qcom_scm_ocmem_unlock(enum qcom_scm_ocmem_client id, u32 offset, u32 size)
-{
- struct qcom_scm_desc desc = {
- .svc = QCOM_SCM_SVC_OCMEM,
- .cmd = QCOM_SCM_OCMEM_UNLOCK_CMD,
- .args[0] = id,
- .args[1] = offset,
- .args[2] = size,
- .arginfo = QCOM_SCM_ARGS(3),
- };
-
- return qcom_scm_call(__scm->dev, &desc, NULL);
-}
-EXPORT_SYMBOL_GPL(qcom_scm_ocmem_unlock);
-
-/**
- * qcom_scm_ice_available() - Is the ICE key programming interface available?
- *
- * Return: true iff the SCM calls wrapped by qcom_scm_ice_invalidate_key() and
- * qcom_scm_ice_set_key() are available.
- */
-bool qcom_scm_ice_available(void)
-{
- return __qcom_scm_is_call_available(__scm->dev, QCOM_SCM_SVC_ES,
- QCOM_SCM_ES_INVALIDATE_ICE_KEY) &&
- __qcom_scm_is_call_available(__scm->dev, QCOM_SCM_SVC_ES,
- QCOM_SCM_ES_CONFIG_SET_ICE_KEY);
-}
-EXPORT_SYMBOL_GPL(qcom_scm_ice_available);
-
-/**
- * qcom_scm_ice_invalidate_key() - Invalidate an inline encryption key
- * @index: the keyslot to invalidate
- *
- * The UFSHCI and eMMC standards define a standard way to do this, but it
- * doesn't work on these SoCs; only this SCM call does.
- *
- * It is assumed that the SoC has only one ICE instance being used, as this SCM
- * call doesn't specify which ICE instance the keyslot belongs to.
- *
- * Return: 0 on success; -errno on failure.
- */
-int qcom_scm_ice_invalidate_key(u32 index)
-{
- struct qcom_scm_desc desc = {
- .svc = QCOM_SCM_SVC_ES,
- .cmd = QCOM_SCM_ES_INVALIDATE_ICE_KEY,
- .arginfo = QCOM_SCM_ARGS(1),
- .args[0] = index,
- .owner = ARM_SMCCC_OWNER_SIP,
- };
-
- return qcom_scm_call(__scm->dev, &desc, NULL);
-}
-EXPORT_SYMBOL_GPL(qcom_scm_ice_invalidate_key);
-
-/**
- * qcom_scm_ice_set_key() - Set an inline encryption key
- * @index: the keyslot into which to set the key
- * @key: the key to program
- * @key_size: the size of the key in bytes
- * @cipher: the encryption algorithm the key is for
- * @data_unit_size: the encryption data unit size, i.e. the size of each
- * individual plaintext and ciphertext. Given in 512-byte
- * units, e.g. 1 = 512 bytes, 8 = 4096 bytes, etc.
- *
- * Program a key into a keyslot of Qualcomm ICE (Inline Crypto Engine), where it
- * can then be used to encrypt/decrypt UFS or eMMC I/O requests inline.
- *
- * The UFSHCI and eMMC standards define a standard way to do this, but it
- * doesn't work on these SoCs; only this SCM call does.
- *
- * It is assumed that the SoC has only one ICE instance being used, as this SCM
- * call doesn't specify which ICE instance the keyslot belongs to.
- *
- * Return: 0 on success; -errno on failure.
- */
-int qcom_scm_ice_set_key(u32 index, const u8 *key, u32 key_size,
- enum qcom_scm_ice_cipher cipher, u32 data_unit_size)
-{
- struct qcom_scm_desc desc = {
- .svc = QCOM_SCM_SVC_ES,
- .cmd = QCOM_SCM_ES_CONFIG_SET_ICE_KEY,
- .arginfo = QCOM_SCM_ARGS(5, QCOM_SCM_VAL, QCOM_SCM_RW,
- QCOM_SCM_VAL, QCOM_SCM_VAL,
- QCOM_SCM_VAL),
- .args[0] = index,
- .args[2] = key_size,
- .args[3] = cipher,
- .args[4] = data_unit_size,
- .owner = ARM_SMCCC_OWNER_SIP,
- };
- void *keybuf;
- dma_addr_t key_phys;
- int ret;
-
- /*
- * 'key' may point to vmalloc()'ed memory, but we need to pass a
- * physical address that's been properly flushed. The sanctioned way to
- * do this is by using the DMA API. But as is best practice for crypto
- * keys, we also must wipe the key after use. This makes kmemdup() +
- * dma_map_single() not clearly correct, since the DMA API can use
- * bounce buffers. Instead, just use dma_alloc_coherent(). Programming
- * keys is normally rare and thus not performance-critical.
- */
-
- keybuf = dma_alloc_coherent(__scm->dev, key_size, &key_phys,
- GFP_KERNEL);
- if (!keybuf)
- return -ENOMEM;
- memcpy(keybuf, key, key_size);
- desc.args[1] = key_phys;
-
- ret = qcom_scm_call(__scm->dev, &desc, NULL);
-
- memzero_explicit(keybuf, key_size);
-
- dma_free_coherent(__scm->dev, key_size, keybuf, key_phys);
- return ret;
-}
-EXPORT_SYMBOL_GPL(qcom_scm_ice_set_key);
-
-/**
- * qcom_scm_hdcp_available() - Check if secure environment supports HDCP.
- *
- * Return true if HDCP is supported, false if not.
- */
-bool qcom_scm_hdcp_available(void)
-{
- bool avail;
- int ret = qcom_scm_clk_enable();
-
- if (ret)
- return ret;
-
- avail = __qcom_scm_is_call_available(__scm->dev, QCOM_SCM_SVC_HDCP,
- QCOM_SCM_HDCP_INVOKE);
-
- qcom_scm_clk_disable();
-
- return avail;
-}
-EXPORT_SYMBOL_GPL(qcom_scm_hdcp_available);
-
-/**
- * qcom_scm_hdcp_req() - Send HDCP request.
- * @req: HDCP request array
- * @req_cnt: HDCP request array count
- * @resp: response buffer passed to SCM
- *
- * Write HDCP register(s) through SCM.
- */
-int qcom_scm_hdcp_req(struct qcom_scm_hdcp_req *req, u32 req_cnt, u32 *resp)
-{
- int ret;
- struct qcom_scm_desc desc = {
- .svc = QCOM_SCM_SVC_HDCP,
- .cmd = QCOM_SCM_HDCP_INVOKE,
- .arginfo = QCOM_SCM_ARGS(10),
- .args = {
- req[0].addr,
- req[0].val,
- req[1].addr,
- req[1].val,
- req[2].addr,
- req[2].val,
- req[3].addr,
- req[3].val,
- req[4].addr,
- req[4].val
- },
- .owner = ARM_SMCCC_OWNER_SIP,
- };
- struct qcom_scm_res res;
-
- if (req_cnt > QCOM_SCM_HDCP_MAX_REQ_CNT)
- return -ERANGE;
-
- ret = qcom_scm_clk_enable();
- if (ret)
- return ret;
-
- ret = qcom_scm_call(__scm->dev, &desc, &res);
- *resp = res.result[0];
-
- qcom_scm_clk_disable();
-
- return ret;
-}
-EXPORT_SYMBOL_GPL(qcom_scm_hdcp_req);
-
-int qcom_scm_iommu_set_pt_format(u32 sec_id, u32 ctx_num, u32 pt_fmt)
-{
- struct qcom_scm_desc desc = {
- .svc = QCOM_SCM_SVC_SMMU_PROGRAM,
- .cmd = QCOM_SCM_SMMU_PT_FORMAT,
- .arginfo = QCOM_SCM_ARGS(3),
- .args[0] = sec_id,
- .args[1] = ctx_num,
- .args[2] = pt_fmt, /* 0: LPAE AArch32 - 1: AArch64 */
- .owner = ARM_SMCCC_OWNER_SIP,
- };
-
- return qcom_scm_call(__scm->dev, &desc, NULL);
-}
-EXPORT_SYMBOL_GPL(qcom_scm_iommu_set_pt_format);
-
-int qcom_scm_qsmmu500_wait_safe_toggle(bool en)
-{
- struct qcom_scm_desc desc = {
- .svc = QCOM_SCM_SVC_SMMU_PROGRAM,
- .cmd = QCOM_SCM_SMMU_CONFIG_ERRATA1,
- .arginfo = QCOM_SCM_ARGS(2),
- .args[0] = QCOM_SCM_SMMU_CONFIG_ERRATA1_CLIENT_ALL,
- .args[1] = en,
- .owner = ARM_SMCCC_OWNER_SIP,
- };
-
-
- return qcom_scm_call_atomic(__scm->dev, &desc, NULL);
-}
-EXPORT_SYMBOL_GPL(qcom_scm_qsmmu500_wait_safe_toggle);
-
-bool qcom_scm_lmh_dcvsh_available(void)
-{
- return __qcom_scm_is_call_available(__scm->dev, QCOM_SCM_SVC_LMH, QCOM_SCM_LMH_LIMIT_DCVSH);
-}
-EXPORT_SYMBOL_GPL(qcom_scm_lmh_dcvsh_available);
-
-int qcom_scm_lmh_profile_change(u32 profile_id)
-{
- struct qcom_scm_desc desc = {
- .svc = QCOM_SCM_SVC_LMH,
- .cmd = QCOM_SCM_LMH_LIMIT_PROFILE_CHANGE,
- .arginfo = QCOM_SCM_ARGS(1, QCOM_SCM_VAL),
- .args[0] = profile_id,
- .owner = ARM_SMCCC_OWNER_SIP,
- };
-
- return qcom_scm_call(__scm->dev, &desc, NULL);
-}
-EXPORT_SYMBOL_GPL(qcom_scm_lmh_profile_change);
-
-int qcom_scm_lmh_dcvsh(u32 payload_fn, u32 payload_reg, u32 payload_val,
- u64 limit_node, u32 node_id, u64 version)
-{
- dma_addr_t payload_phys;
- u32 *payload_buf;
- int ret, payload_size = 5 * sizeof(u32);
-
- struct qcom_scm_desc desc = {
- .svc = QCOM_SCM_SVC_LMH,
- .cmd = QCOM_SCM_LMH_LIMIT_DCVSH,
- .arginfo = QCOM_SCM_ARGS(5, QCOM_SCM_RO, QCOM_SCM_VAL, QCOM_SCM_VAL,
- QCOM_SCM_VAL, QCOM_SCM_VAL),
- .args[1] = payload_size,
- .args[2] = limit_node,
- .args[3] = node_id,
- .args[4] = version,
- .owner = ARM_SMCCC_OWNER_SIP,
- };
-
- payload_buf = dma_alloc_coherent(__scm->dev, payload_size, &payload_phys, GFP_KERNEL);
- if (!payload_buf)
- return -ENOMEM;
-
- payload_buf[0] = payload_fn;
- payload_buf[1] = 0;
- payload_buf[2] = payload_reg;
- payload_buf[3] = 1;
- payload_buf[4] = payload_val;
-
- desc.args[0] = payload_phys;
-
- ret = qcom_scm_call(__scm->dev, &desc, NULL);
-
- dma_free_coherent(__scm->dev, payload_size, payload_buf, payload_phys);
- return ret;
-}
-EXPORT_SYMBOL_GPL(qcom_scm_lmh_dcvsh);
-
-static int qcom_scm_find_dload_address(struct device *dev, u64 *addr)
-{
- struct device_node *tcsr;
- struct device_node *np = dev->of_node;
- struct resource res;
- u32 offset;
- int ret;
-
- tcsr = of_parse_phandle(np, "qcom,dload-mode", 0);
- if (!tcsr)
- return 0;
-
- ret = of_address_to_resource(tcsr, 0, &res);
- of_node_put(tcsr);
- if (ret)
- return ret;
-
- ret = of_property_read_u32_index(np, "qcom,dload-mode", 1, &offset);
- if (ret < 0)
- return ret;
-
- *addr = res.start + offset;
-
- return 0;
-}
-
-#ifdef CONFIG_QCOM_QSEECOM
-
-/* Lock for QSEECOM SCM call executions */
-static DEFINE_MUTEX(qcom_scm_qseecom_call_lock);
-
-static int __qcom_scm_qseecom_call(const struct qcom_scm_desc *desc,
- struct qcom_scm_qseecom_resp *res)
-{
- struct qcom_scm_res scm_res = {};
- int status;
-
- /*
- * QSEECOM SCM calls should not be executed concurrently. Therefore, we
- * require the respective call lock to be held.
- */
- lockdep_assert_held(&qcom_scm_qseecom_call_lock);
-
- status = qcom_scm_call(__scm->dev, desc, &scm_res);
-
- res->result = scm_res.result[0];
- res->resp_type = scm_res.result[1];
- res->data = scm_res.result[2];
-
- if (status)
- return status;
-
- return 0;
-}
-
-/**
- * qcom_scm_qseecom_call() - Perform a QSEECOM SCM call.
- * @desc: SCM call descriptor.
- * @res: SCM call response (output).
- *
- * Performs the QSEECOM SCM call described by @desc, returning the response in
- * @rsp.
- *
- * Return: Zero on success, nonzero on failure.
- */
-static int qcom_scm_qseecom_call(const struct qcom_scm_desc *desc,
- struct qcom_scm_qseecom_resp *res)
-{
- int status;
-
- /*
- * Note: Multiple QSEECOM SCM calls should not be executed same time,
- * so lock things here. This needs to be extended to callback/listener
- * handling when support for that is implemented.
- */
-
- mutex_lock(&qcom_scm_qseecom_call_lock);
- status = __qcom_scm_qseecom_call(desc, res);
- mutex_unlock(&qcom_scm_qseecom_call_lock);
-
- dev_dbg(__scm->dev, "%s: owner=%x, svc=%x, cmd=%x, result=%lld, type=%llx, data=%llx\n",
- __func__, desc->owner, desc->svc, desc->cmd, res->result,
- res->resp_type, res->data);
-
- if (status) {
- dev_err(__scm->dev, "qseecom: scm call failed with error %d\n", status);
- return status;
- }
-
- /*
- * TODO: Handle incomplete and blocked calls:
- *
- * Incomplete and blocked calls are not supported yet. Some devices
- * and/or commands require those, some don't. Let's warn about them
- * prominently in case someone attempts to try these commands with a
- * device/command combination that isn't supported yet.
- */
- WARN_ON(res->result == QSEECOM_RESULT_INCOMPLETE);
- WARN_ON(res->result == QSEECOM_RESULT_BLOCKED_ON_LISTENER);
-
- return 0;
-}
-
-/**
- * qcom_scm_qseecom_get_version() - Query the QSEECOM version.
- * @version: Pointer where the QSEECOM version will be stored.
- *
- * Performs the QSEECOM SCM querying the QSEECOM version currently running in
- * the TrustZone.
- *
- * Return: Zero on success, nonzero on failure.
- */
-static int qcom_scm_qseecom_get_version(u32 *version)
-{
- struct qcom_scm_desc desc = {};
- struct qcom_scm_qseecom_resp res = {};
- u32 feature = 10;
- int ret;
-
- desc.owner = QSEECOM_TZ_OWNER_SIP;
- desc.svc = QSEECOM_TZ_SVC_INFO;
- desc.cmd = QSEECOM_TZ_CMD_INFO_VERSION;
- desc.arginfo = QCOM_SCM_ARGS(1, QCOM_SCM_VAL);
- desc.args[0] = feature;
-
- ret = qcom_scm_qseecom_call(&desc, &res);
- if (ret)
- return ret;
-
- *version = res.result;
- return 0;
-}
-
-/**
- * qcom_scm_qseecom_app_get_id() - Query the app ID for a given QSEE app name.
- * @app_name: The name of the app.
- * @app_id: The returned app ID.
- *
- * Query and return the application ID of the SEE app identified by the given
- * name. This returned ID is the unique identifier of the app required for
- * subsequent communication.
- *
- * Return: Zero on success, nonzero on failure, -ENOENT if the app has not been
- * loaded or could not be found.
- */
-int qcom_scm_qseecom_app_get_id(const char *app_name, u32 *app_id)
-{
- unsigned long name_buf_size = QSEECOM_MAX_APP_NAME_SIZE;
- unsigned long app_name_len = strlen(app_name);
- struct qcom_scm_desc desc = {};
- struct qcom_scm_qseecom_resp res = {};
- dma_addr_t name_buf_phys;
- char *name_buf;
- int status;
-
- if (app_name_len >= name_buf_size)
- return -EINVAL;
-
- name_buf = kzalloc(name_buf_size, GFP_KERNEL);
- if (!name_buf)
- return -ENOMEM;
-
- memcpy(name_buf, app_name, app_name_len);
-
- name_buf_phys = dma_map_single(__scm->dev, name_buf, name_buf_size, DMA_TO_DEVICE);
- status = dma_mapping_error(__scm->dev, name_buf_phys);
- if (status) {
- kfree(name_buf);
- dev_err(__scm->dev, "qseecom: failed to map dma address\n");
- return status;
- }
-
- desc.owner = QSEECOM_TZ_OWNER_QSEE_OS;
- desc.svc = QSEECOM_TZ_SVC_APP_MGR;
- desc.cmd = QSEECOM_TZ_CMD_APP_LOOKUP;
- desc.arginfo = QCOM_SCM_ARGS(2, QCOM_SCM_RW, QCOM_SCM_VAL);
- desc.args[0] = name_buf_phys;
- desc.args[1] = app_name_len;
-
- status = qcom_scm_qseecom_call(&desc, &res);
- dma_unmap_single(__scm->dev, name_buf_phys, name_buf_size, DMA_TO_DEVICE);
- kfree(name_buf);
-
- if (status)
- return status;
-
- if (res.result == QSEECOM_RESULT_FAILURE)
- return -ENOENT;
-
- if (res.result != QSEECOM_RESULT_SUCCESS)
- return -EINVAL;
-
- if (res.resp_type != QSEECOM_SCM_RES_APP_ID)
- return -EINVAL;
-
- *app_id = res.data;
- return 0;
-}
-EXPORT_SYMBOL_GPL(qcom_scm_qseecom_app_get_id);
-
-/**
- * qcom_scm_qseecom_app_send() - Send to and receive data from a given QSEE app.
- * @app_id: The ID of the target app.
- * @req: Request buffer sent to the app (must be DMA-mappable).
- * @req_size: Size of the request buffer.
- * @rsp: Response buffer, written to by the app (must be DMA-mappable).
- * @rsp_size: Size of the response buffer.
- *
- * Sends a request to the QSEE app associated with the given ID and read back
- * its response. The caller must provide two DMA memory regions, one for the
- * request and one for the response, and fill out the @req region with the
- * respective (app-specific) request data. The QSEE app reads this and returns
- * its response in the @rsp region.
- *
- * Return: Zero on success, nonzero on failure.
- */
-int qcom_scm_qseecom_app_send(u32 app_id, void *req, size_t req_size, void *rsp,
- size_t rsp_size)
-{
- struct qcom_scm_qseecom_resp res = {};
- struct qcom_scm_desc desc = {};
- dma_addr_t req_phys;
- dma_addr_t rsp_phys;
- int status;
-
- /* Map request buffer */
- req_phys = dma_map_single(__scm->dev, req, req_size, DMA_TO_DEVICE);
- status = dma_mapping_error(__scm->dev, req_phys);
- if (status) {
- dev_err(__scm->dev, "qseecom: failed to map request buffer\n");
- return status;
- }
-
- /* Map response buffer */
- rsp_phys = dma_map_single(__scm->dev, rsp, rsp_size, DMA_FROM_DEVICE);
- status = dma_mapping_error(__scm->dev, rsp_phys);
- if (status) {
- dma_unmap_single(__scm->dev, req_phys, req_size, DMA_TO_DEVICE);
- dev_err(__scm->dev, "qseecom: failed to map response buffer\n");
- return status;
- }
-
- /* Set up SCM call data */
- desc.owner = QSEECOM_TZ_OWNER_TZ_APPS;
- desc.svc = QSEECOM_TZ_SVC_APP_ID_PLACEHOLDER;
- desc.cmd = QSEECOM_TZ_CMD_APP_SEND;
- desc.arginfo = QCOM_SCM_ARGS(5, QCOM_SCM_VAL,
- QCOM_SCM_RW, QCOM_SCM_VAL,
- QCOM_SCM_RW, QCOM_SCM_VAL);
- desc.args[0] = app_id;
- desc.args[1] = req_phys;
- desc.args[2] = req_size;
- desc.args[3] = rsp_phys;
- desc.args[4] = rsp_size;
-
- /* Perform call */
- status = qcom_scm_qseecom_call(&desc, &res);
-
- /* Unmap buffers */
- dma_unmap_single(__scm->dev, rsp_phys, rsp_size, DMA_FROM_DEVICE);
- dma_unmap_single(__scm->dev, req_phys, req_size, DMA_TO_DEVICE);
-
- if (status)
- return status;
-
- if (res.result != QSEECOM_RESULT_SUCCESS)
- return -EIO;
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(qcom_scm_qseecom_app_send);
-
-/*
- * We do not yet support re-entrant calls via the qseecom interface. To prevent
- + any potential issues with this, only allow validated machines for now.
- */
-static const struct of_device_id qcom_scm_qseecom_allowlist[] = {
- { .compatible = "lenovo,thinkpad-x13s", },
- { }
-};
-
-static bool qcom_scm_qseecom_machine_is_allowed(void)
-{
- struct device_node *np;
- bool match;
-
- np = of_find_node_by_path("/");
- if (!np)
- return false;
-
- match = of_match_node(qcom_scm_qseecom_allowlist, np);
- of_node_put(np);
-
- return match;
-}
-
-static void qcom_scm_qseecom_free(void *data)
-{
- struct platform_device *qseecom_dev = data;
-
- platform_device_del(qseecom_dev);
- platform_device_put(qseecom_dev);
-}
-
-static int qcom_scm_qseecom_init(struct qcom_scm *scm)
-{
- struct platform_device *qseecom_dev;
- u32 version;
- int ret;
-
- /*
- * Note: We do two steps of validation here: First, we try to query the
- * QSEECOM version as a check to see if the interface exists on this
- * device. Second, we check against known good devices due to current
- * driver limitations (see comment in qcom_scm_qseecom_allowlist).
- *
- * Note that we deliberately do the machine check after the version
- * check so that we can log potentially supported devices. This should
- * be safe as downstream sources indicate that the version query is
- * neither blocking nor reentrant.
- */
- ret = qcom_scm_qseecom_get_version(&version);
- if (ret)
- return 0;
-
- dev_info(scm->dev, "qseecom: found qseecom with version 0x%x\n", version);
-
- if (!qcom_scm_qseecom_machine_is_allowed()) {
- dev_info(scm->dev, "qseecom: untested machine, skipping\n");
- return 0;
- }
-
- /*
- * Set up QSEECOM interface device. All application clients will be
- * set up and managed by the corresponding driver for it.
- */
- qseecom_dev = platform_device_alloc("qcom_qseecom", -1);
- if (!qseecom_dev)
- return -ENOMEM;
-
- qseecom_dev->dev.parent = scm->dev;
-
- ret = platform_device_add(qseecom_dev);
- if (ret) {
- platform_device_put(qseecom_dev);
- return ret;
- }
-
- return devm_add_action_or_reset(scm->dev, qcom_scm_qseecom_free, qseecom_dev);
-}
-
-#else /* CONFIG_QCOM_QSEECOM */
-
-static int qcom_scm_qseecom_init(struct qcom_scm *scm)
-{
- return 0;
-}
-
-#endif /* CONFIG_QCOM_QSEECOM */
-
-/**
- * qcom_scm_is_available() - Checks if SCM is available
- */
-bool qcom_scm_is_available(void)
-{
- return !!__scm;
-}
-EXPORT_SYMBOL_GPL(qcom_scm_is_available);
-
-static int qcom_scm_assert_valid_wq_ctx(u32 wq_ctx)
-{
- /* FW currently only supports a single wq_ctx (zero).
- * TODO: Update this logic to include dynamic allocation and lookup of
- * completion structs when FW supports more wq_ctx values.
- */
- if (wq_ctx != 0) {
- dev_err(__scm->dev, "Firmware unexpectedly passed non-zero wq_ctx\n");
- return -EINVAL;
- }
-
- return 0;
-}
-
-int qcom_scm_wait_for_wq_completion(u32 wq_ctx)
-{
- int ret;
-
- ret = qcom_scm_assert_valid_wq_ctx(wq_ctx);
- if (ret)
- return ret;
-
- wait_for_completion(&__scm->waitq_comp);
-
- return 0;
-}
-
-static int qcom_scm_waitq_wakeup(struct qcom_scm *scm, unsigned int wq_ctx)
-{
- int ret;
-
- ret = qcom_scm_assert_valid_wq_ctx(wq_ctx);
- if (ret)
- return ret;
-
- complete(&__scm->waitq_comp);
-
- return 0;
-}
-
-static irqreturn_t qcom_scm_irq_handler(int irq, void *data)
-{
- int ret;
- struct qcom_scm *scm = data;
- u32 wq_ctx, flags, more_pending = 0;
-
- do {
- ret = scm_get_wq_ctx(&wq_ctx, &flags, &more_pending);
- if (ret) {
- dev_err(scm->dev, "GET_WQ_CTX SMC call failed: %d\n", ret);
- goto out;
- }
-
- if (flags != QCOM_SMC_WAITQ_FLAG_WAKE_ONE &&
- flags != QCOM_SMC_WAITQ_FLAG_WAKE_ALL) {
- dev_err(scm->dev, "Invalid flags found for wq_ctx: %u\n", flags);
- goto out;
- }
-
- ret = qcom_scm_waitq_wakeup(scm, wq_ctx);
- if (ret)
- goto out;
- } while (more_pending);
-
-out:
- return IRQ_HANDLED;
-}
-
-static int qcom_scm_probe(struct platform_device *pdev)
-{
- struct qcom_scm *scm;
- int irq, ret;
-
- scm = devm_kzalloc(&pdev->dev, sizeof(*scm), GFP_KERNEL);
- if (!scm)
- return -ENOMEM;
-
- ret = qcom_scm_find_dload_address(&pdev->dev, &scm->dload_mode_addr);
- if (ret < 0)
- return ret;
-
- mutex_init(&scm->scm_bw_lock);
-
- scm->path = devm_of_icc_get(&pdev->dev, NULL);
- if (IS_ERR(scm->path))
- return dev_err_probe(&pdev->dev, PTR_ERR(scm->path),
- "failed to acquire interconnect path\n");
-
- scm->core_clk = devm_clk_get_optional(&pdev->dev, "core");
- if (IS_ERR(scm->core_clk))
- return PTR_ERR(scm->core_clk);
-
- scm->iface_clk = devm_clk_get_optional(&pdev->dev, "iface");
- if (IS_ERR(scm->iface_clk))
- return PTR_ERR(scm->iface_clk);
-
- scm->bus_clk = devm_clk_get_optional(&pdev->dev, "bus");
- if (IS_ERR(scm->bus_clk))
- return PTR_ERR(scm->bus_clk);
-
- scm->reset.ops = &qcom_scm_pas_reset_ops;
- scm->reset.nr_resets = 1;
- scm->reset.of_node = pdev->dev.of_node;
- ret = devm_reset_controller_register(&pdev->dev, &scm->reset);
- if (ret)
- return ret;
-
- /* vote for max clk rate for highest performance */
- ret = clk_set_rate(scm->core_clk, INT_MAX);
- if (ret)
- return ret;
-
- __scm = scm;
- __scm->dev = &pdev->dev;
-
- init_completion(&__scm->waitq_comp);
-
- irq = platform_get_irq_optional(pdev, 0);
- if (irq < 0) {
- if (irq != -ENXIO)
- return irq;
- } else {
- ret = devm_request_threaded_irq(__scm->dev, irq, NULL, qcom_scm_irq_handler,
- IRQF_ONESHOT, "qcom-scm", __scm);
- if (ret < 0)
- return dev_err_probe(scm->dev, ret, "Failed to request qcom-scm irq\n");
- }
-
- __get_convention();
-
- /*
- * If requested enable "download mode", from this point on warmboot
- * will cause the boot stages to enter download mode, unless
- * disabled below by a clean shutdown/reboot.
- */
- if (download_mode)
- qcom_scm_set_download_mode(true);
-
-
- /*
- * Disable SDI if indicated by DT that it is enabled by default.
- */
- if (of_property_read_bool(pdev->dev.of_node, "qcom,sdi-enabled"))
- qcom_scm_disable_sdi();
-
- /*
- * Initialize the QSEECOM interface.
- *
- * Note: QSEECOM is fairly self-contained and this only adds the
- * interface device (the driver of which does most of the heavy
- * lifting). So any errors returned here should be either -ENOMEM or
- * -EINVAL (with the latter only in case there's a bug in our code).
- * This means that there is no need to bring down the whole SCM driver.
- * Just log the error instead and let SCM live.
- */
- ret = qcom_scm_qseecom_init(scm);
- WARN(ret < 0, "failed to initialize qseecom: %d\n", ret);
-
- return 0;
-}
-
-static void qcom_scm_shutdown(struct platform_device *pdev)
-{
- /* Clean shutdown, disable download mode to allow normal restart */
- qcom_scm_set_download_mode(false);
-}
-
-static const struct of_device_id qcom_scm_dt_match[] = {
- { .compatible = "qcom,scm" },
-
- /* Legacy entries kept for backwards compatibility */
- { .compatible = "qcom,scm-apq8064" },
- { .compatible = "qcom,scm-apq8084" },
- { .compatible = "qcom,scm-ipq4019" },
- { .compatible = "qcom,scm-msm8953" },
- { .compatible = "qcom,scm-msm8974" },
- { .compatible = "qcom,scm-msm8996" },
- {}
-};
-MODULE_DEVICE_TABLE(of, qcom_scm_dt_match);
-
-static struct platform_driver qcom_scm_driver = {
- .driver = {
- .name = "qcom_scm",
- .of_match_table = qcom_scm_dt_match,
- .suppress_bind_attrs = true,
- },
- .probe = qcom_scm_probe,
- .shutdown = qcom_scm_shutdown,
-};
-
-static int __init qcom_scm_init(void)
-{
- return platform_driver_register(&qcom_scm_driver);
-}
-subsys_initcall(qcom_scm_init);
-
-MODULE_DESCRIPTION("Qualcomm Technologies, Inc. SCM driver");
-MODULE_LICENSE("GPL v2");