diff options
Diffstat (limited to 'drivers/firmware/qcom_scm.c')
| -rw-r--r-- | drivers/firmware/qcom_scm.c | 376 |
1 files changed, 188 insertions, 188 deletions
diff --git a/drivers/firmware/qcom_scm.c b/drivers/firmware/qcom_scm.c index 5efe7292cd43..5ba4c85a9257 100644 --- a/drivers/firmware/qcom_scm.c +++ b/drivers/firmware/qcom_scm.c @@ -85,33 +85,33 @@ static void qcom_scm_clk_disable(void) } /** - * qcom_scm_set_cold_boot_addr() - Set the cold boot address for cpus + * qcom_scm_set_warm_boot_addr() - Set the warm boot address for cpus * @entry: Entry point function for the cpus * @cpus: The cpumask of cpus that will use the entry point * - * Set the cold boot address of the cpus. Any cpu outside the supported - * range would be removed from the cpu present mask. + * 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_cold_boot_addr(void *entry, const cpumask_t *cpus) +int qcom_scm_set_warm_boot_addr(void *entry, const cpumask_t *cpus) { - return __qcom_scm_set_cold_boot_addr(__scm ? __scm->dev : NULL, entry, - cpus); + return __qcom_scm_set_warm_boot_addr(__scm->dev, entry, cpus); } -EXPORT_SYMBOL(qcom_scm_set_cold_boot_addr); +EXPORT_SYMBOL(qcom_scm_set_warm_boot_addr); /** - * qcom_scm_set_warm_boot_addr() - Set the warm boot address for cpus + * qcom_scm_set_cold_boot_addr() - Set the cold boot address for cpus * @entry: Entry point function for the cpus * @cpus: The cpumask of cpus that will use the entry point * - * 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. + * Set the cold boot address of the cpus. Any cpu outside the supported + * range would be removed from the cpu present mask. */ -int qcom_scm_set_warm_boot_addr(void *entry, const cpumask_t *cpus) +int qcom_scm_set_cold_boot_addr(void *entry, const cpumask_t *cpus) { - return __qcom_scm_set_warm_boot_addr(__scm->dev, entry, cpus); + return __qcom_scm_set_cold_boot_addr(__scm ? __scm->dev : NULL, entry, + cpus); } -EXPORT_SYMBOL(qcom_scm_set_warm_boot_addr); +EXPORT_SYMBOL(qcom_scm_set_cold_boot_addr); /** * qcom_scm_cpu_power_down() - Power down the cpu @@ -127,107 +127,33 @@ void qcom_scm_cpu_power_down(u32 flags) } EXPORT_SYMBOL(qcom_scm_cpu_power_down); -/** - * 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) -{ - int ret = qcom_scm_clk_enable(); - - if (ret) - return ret; - - ret = __qcom_scm_is_call_available(__scm->dev, QCOM_SCM_SVC_HDCP, - QCOM_SCM_HDCP_INVOKE); - - qcom_scm_clk_disable(); - - return ret > 0 ? true : false; -} -EXPORT_SYMBOL(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 = qcom_scm_clk_enable(); - - if (ret) - return ret; - - ret = __qcom_scm_hdcp_req(__scm->dev, req, req_cnt, resp); - qcom_scm_clk_disable(); - return ret; -} -EXPORT_SYMBOL(qcom_scm_hdcp_req); - -/** - * 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 qcom_scm_set_remote_state(u32 state, u32 id) { - int ret; - - ret = __qcom_scm_is_call_available(__scm->dev, QCOM_SCM_SVC_PIL, - QCOM_SCM_PIL_PAS_IS_SUPPORTED); - if (ret <= 0) - return false; - - return __qcom_scm_pas_supported(__scm->dev, peripheral); + return __qcom_scm_set_remote_state(__scm->dev, state, id); } -EXPORT_SYMBOL(qcom_scm_pas_supported); +EXPORT_SYMBOL(qcom_scm_set_remote_state); -/** - * qcom_scm_ocmem_lock_available() - is OCMEM lock/unlock interface available - */ -bool qcom_scm_ocmem_lock_available(void) +static void qcom_scm_set_download_mode(bool enable) { - return __qcom_scm_is_call_available(__scm->dev, QCOM_SCM_SVC_OCMEM, - QCOM_SCM_OCMEM_LOCK_CMD); -} -EXPORT_SYMBOL(qcom_scm_ocmem_lock_available); + bool avail; + int ret = 0; -/** - * 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) -{ - return __qcom_scm_ocmem_lock(__scm->dev, id, offset, size, mode); -} -EXPORT_SYMBOL(qcom_scm_ocmem_lock); + 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->dev, __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"); + } -/** - * 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) -{ - return __qcom_scm_ocmem_unlock(__scm->dev, id, offset, size); + if (ret) + dev_err(__scm->dev, "failed to set download mode: %d\n", ret); } -EXPORT_SYMBOL(qcom_scm_ocmem_unlock); /** * qcom_scm_pas_init_image() - Initialize peripheral authentication service @@ -342,6 +268,26 @@ int qcom_scm_pas_shutdown(u32 peripheral) } EXPORT_SYMBOL(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; + + ret = __qcom_scm_is_call_available(__scm->dev, QCOM_SCM_SVC_PIL, + QCOM_SCM_PIL_PAS_IS_SUPPORTED); + if (ret <= 0) + return false; + + return __qcom_scm_pas_supported(__scm->dev, peripheral); +} +EXPORT_SYMBOL(qcom_scm_pas_supported); + static int qcom_scm_pas_reset_assert(struct reset_controller_dev *rcdev, unsigned long idx) { @@ -365,6 +311,18 @@ static const struct reset_control_ops qcom_scm_pas_reset_ops = { .deassert = qcom_scm_pas_reset_deassert, }; +int qcom_scm_io_readl(phys_addr_t addr, unsigned int *val) +{ + return __qcom_scm_io_readl(__scm->dev, addr, val); +} +EXPORT_SYMBOL(qcom_scm_io_readl); + +int qcom_scm_io_writel(phys_addr_t addr, unsigned int val) +{ + return __qcom_scm_io_writel(__scm->dev, addr, val); +} +EXPORT_SYMBOL(qcom_scm_io_writel); + /** * qcom_scm_restore_sec_cfg_available() - Check if secure environment * supports restore security config interface. @@ -396,87 +354,6 @@ int qcom_scm_iommu_secure_ptbl_init(u64 addr, u32 size, u32 spare) } EXPORT_SYMBOL(qcom_scm_iommu_secure_ptbl_init); -int qcom_scm_qsmmu500_wait_safe_toggle(bool en) -{ - return __qcom_scm_qsmmu500_wait_safe_toggle(__scm->dev, en); -} -EXPORT_SYMBOL(qcom_scm_qsmmu500_wait_safe_toggle); - -int qcom_scm_io_readl(phys_addr_t addr, unsigned int *val) -{ - return __qcom_scm_io_readl(__scm->dev, addr, val); -} -EXPORT_SYMBOL(qcom_scm_io_readl); - -int qcom_scm_io_writel(phys_addr_t addr, unsigned int val) -{ - return __qcom_scm_io_writel(__scm->dev, addr, val); -} -EXPORT_SYMBOL(qcom_scm_io_writel); - -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->dev, __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); -} - -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; -} - -/** - * qcom_scm_is_available() - Checks if SCM is available - */ -bool qcom_scm_is_available(void) -{ - return !!__scm; -} -EXPORT_SYMBOL(qcom_scm_is_available); - -int qcom_scm_set_remote_state(u32 state, u32 id) -{ - return __qcom_scm_set_remote_state(__scm->dev, state, id); -} -EXPORT_SYMBOL(qcom_scm_set_remote_state); - /** * qcom_scm_assign_mem() - Make a secure call to reassign memory ownership * @mem_addr: mem region whose ownership need to be reassigned @@ -559,6 +436,129 @@ int qcom_scm_assign_mem(phys_addr_t mem_addr, size_t mem_sz, } EXPORT_SYMBOL(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(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) +{ + return __qcom_scm_ocmem_lock(__scm->dev, id, offset, size, mode); +} +EXPORT_SYMBOL(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) +{ + return __qcom_scm_ocmem_unlock(__scm->dev, id, offset, size); +} +EXPORT_SYMBOL(qcom_scm_ocmem_unlock); + +/** + * 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) +{ + int ret = qcom_scm_clk_enable(); + + if (ret) + return ret; + + ret = __qcom_scm_is_call_available(__scm->dev, QCOM_SCM_SVC_HDCP, + QCOM_SCM_HDCP_INVOKE); + + qcom_scm_clk_disable(); + + return ret > 0 ? true : false; +} +EXPORT_SYMBOL(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 = qcom_scm_clk_enable(); + + if (ret) + return ret; + + ret = __qcom_scm_hdcp_req(__scm->dev, req, req_cnt, resp); + qcom_scm_clk_disable(); + return ret; +} +EXPORT_SYMBOL(qcom_scm_hdcp_req); + +int qcom_scm_qsmmu500_wait_safe_toggle(bool en) +{ + return __qcom_scm_qsmmu500_wait_safe_toggle(__scm->dev, en); +} +EXPORT_SYMBOL(qcom_scm_qsmmu500_wait_safe_toggle); + +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; +} + +/** + * qcom_scm_is_available() - Checks if SCM is available + */ +bool qcom_scm_is_available(void) +{ + return !!__scm; +} +EXPORT_SYMBOL(qcom_scm_is_available); + static int qcom_scm_probe(struct platform_device *pdev) { struct qcom_scm *scm; |