diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/remoteproc.h | 36 | ||||
| -rw-r--r-- | include/linux/remoteproc/qcom_q6v5_ipa_notify.h | 82 | ||||
| -rw-r--r-- | include/linux/remoteproc/qcom_rproc.h | 36 | ||||
| -rw-r--r-- | include/uapi/linux/remoteproc_cdev.h | 37 |
4 files changed, 101 insertions, 90 deletions
diff --git a/include/linux/remoteproc.h b/include/linux/remoteproc.h index e7b7bab8b235..2fa68bf5aa4f 100644 --- a/include/linux/remoteproc.h +++ b/include/linux/remoteproc.h @@ -38,6 +38,7 @@ #include <linux/types.h> #include <linux/mutex.h> #include <linux/virtio.h> +#include <linux/cdev.h> #include <linux/completion.h> #include <linux/idr.h> #include <linux/of.h> @@ -359,6 +360,7 @@ enum rsc_handling_status { * @unprepare: unprepare device after stop * @start: power on the device and boot it * @stop: power off the device + * @attach: attach to a device that his already powered up * @kick: kick a virtqueue (virtqueue id given as a parameter) * @da_to_va: optional platform hook to perform address translations * @parse_fw: parse firmware to extract information (e.g. resource table) @@ -379,6 +381,7 @@ struct rproc_ops { int (*unprepare)(struct rproc *rproc); int (*start)(struct rproc *rproc); int (*stop)(struct rproc *rproc); + int (*attach)(struct rproc *rproc); void (*kick)(struct rproc *rproc, int vqid); void * (*da_to_va)(struct rproc *rproc, u64 da, size_t len); int (*parse_fw)(struct rproc *rproc, const struct firmware *fw); @@ -400,6 +403,8 @@ struct rproc_ops { * @RPROC_RUNNING: device is up and running * @RPROC_CRASHED: device has crashed; need to start recovery * @RPROC_DELETED: device is deleted + * @RPROC_DETACHED: device has been booted by another entity and waiting + * for the core to attach to it * @RPROC_LAST: just keep this one at the end * * Please note that the values of these states are used as indices @@ -414,7 +419,8 @@ enum rproc_state { RPROC_RUNNING = 2, RPROC_CRASHED = 3, RPROC_DELETED = 4, - RPROC_LAST = 5, + RPROC_DETACHED = 5, + RPROC_LAST = 6, }; /** @@ -435,6 +441,20 @@ enum rproc_crash_type { }; /** + * enum rproc_dump_mechanism - Coredump options for core + * @RPROC_COREDUMP_DEFAULT: Copy dump to separate buffer and carry on with + recovery + * @RPROC_COREDUMP_INLINE: Read segments directly from device memory. Stall + recovery until all segments are read + * @RPROC_COREDUMP_DISABLED: Don't perform any dump + */ +enum rproc_dump_mechanism { + RPROC_COREDUMP_DEFAULT, + RPROC_COREDUMP_INLINE, + RPROC_COREDUMP_DISABLED, +}; + +/** * struct rproc_dump_segment - segment info from ELF header * @node: list node related to the rproc segment list * @da: device address of the segment @@ -451,7 +471,7 @@ struct rproc_dump_segment { void *priv; void (*dump)(struct rproc *rproc, struct rproc_dump_segment *segment, - void *dest); + void *dest, size_t offset, size_t size); loff_t offset; }; @@ -466,6 +486,7 @@ struct rproc_dump_segment { * @dev: virtual device for refcounting and common remoteproc behavior * @power: refcount of users who need this rproc powered up * @state: state of the device + * @dump_conf: Currently selected coredump configuration * @lock: lock which protects concurrent manipulations of the rproc * @dbg_dir: debugfs directory of this rproc device * @traces: list of trace buffers @@ -486,8 +507,11 @@ struct rproc_dump_segment { * @table_sz: size of @cached_table * @has_iommu: flag to indicate if remote processor is behind an MMU * @auto_boot: flag to indicate if remote processor should be auto-started + * @autonomous: true if an external entity has booted the remote processor * @dump_segments: list of segments in the firmware * @nb_vdev: number of vdev currently handled by rproc + * @char_dev: character device of the rproc + * @cdev_put_on_release: flag to indicate if remoteproc should be shutdown on @char_dev release */ struct rproc { struct list_head node; @@ -499,6 +523,7 @@ struct rproc { struct device dev; atomic_t power; unsigned int state; + enum rproc_dump_mechanism dump_conf; struct mutex lock; struct dentry *dbg_dir; struct list_head traces; @@ -519,10 +544,13 @@ struct rproc { size_t table_sz; bool has_iommu; bool auto_boot; + bool autonomous; struct list_head dump_segments; int nb_vdev; u8 elf_class; u16 elf_machine; + struct cdev cdev; + bool cdev_put_on_release; }; /** @@ -603,6 +631,7 @@ void rproc_put(struct rproc *rproc); int rproc_add(struct rproc *rproc); int rproc_del(struct rproc *rproc); void rproc_free(struct rproc *rproc); +void rproc_resource_cleanup(struct rproc *rproc); struct rproc *devm_rproc_alloc(struct device *dev, const char *name, const struct rproc_ops *ops, @@ -630,7 +659,8 @@ int rproc_coredump_add_custom_segment(struct rproc *rproc, dma_addr_t da, size_t size, void (*dumpfn)(struct rproc *rproc, struct rproc_dump_segment *segment, - void *dest), + void *dest, size_t offset, + size_t size), void *priv); int rproc_coredump_set_elf_info(struct rproc *rproc, u8 class, u16 machine); diff --git a/include/linux/remoteproc/qcom_q6v5_ipa_notify.h b/include/linux/remoteproc/qcom_q6v5_ipa_notify.h deleted file mode 100644 index 0820edc0ab7d..000000000000 --- a/include/linux/remoteproc/qcom_q6v5_ipa_notify.h +++ /dev/null @@ -1,82 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ - -/* Copyright (C) 2019 Linaro Ltd. */ - -#ifndef __QCOM_Q6V5_IPA_NOTIFY_H__ -#define __QCOM_Q6V5_IPA_NOTIFY_H__ - -#if IS_ENABLED(CONFIG_QCOM_Q6V5_IPA_NOTIFY) - -#include <linux/remoteproc.h> - -enum qcom_rproc_event { - MODEM_STARTING = 0, /* Modem is about to be started */ - MODEM_RUNNING = 1, /* Startup complete; modem is operational */ - MODEM_STOPPING = 2, /* Modem is about to shut down */ - MODEM_CRASHED = 3, /* Modem has crashed (implies stopping) */ - MODEM_OFFLINE = 4, /* Modem is now offline */ - MODEM_REMOVING = 5, /* Modem is about to be removed */ -}; - -typedef void (*qcom_ipa_notify_t)(void *data, enum qcom_rproc_event event); - -struct qcom_rproc_ipa_notify { - struct rproc_subdev subdev; - - qcom_ipa_notify_t notify; - void *data; -}; - -/** - * qcom_add_ipa_notify_subdev() - Register IPA notification subdevice - * @rproc: rproc handle - * @ipa_notify: IPA notification subdevice handle - * - * Register the @ipa_notify subdevice with the @rproc so modem events - * can be sent to IPA when they occur. - * - * This is defined in "qcom_q6v5_ipa_notify.c". - */ -void qcom_add_ipa_notify_subdev(struct rproc *rproc, - struct qcom_rproc_ipa_notify *ipa_notify); - -/** - * qcom_remove_ipa_notify_subdev() - Remove IPA SSR subdevice - * @rproc: rproc handle - * @ipa_notify: IPA notification subdevice handle - * - * This is defined in "qcom_q6v5_ipa_notify.c". - */ -void qcom_remove_ipa_notify_subdev(struct rproc *rproc, - struct qcom_rproc_ipa_notify *ipa_notify); - -/** - * qcom_register_ipa_notify() - Register IPA notification function - * @rproc: Remote processor handle - * @notify: Non-null IPA notification callback function pointer - * @data: Data supplied to IPA notification callback function - * - * @Return: 0 if successful, or a negative error code otherwise - * - * This is defined in "qcom_q6v5_mss.c". - */ -int qcom_register_ipa_notify(struct rproc *rproc, qcom_ipa_notify_t notify, - void *data); -/** - * qcom_deregister_ipa_notify() - Deregister IPA notification function - * @rproc: Remote processor handle - * - * This is defined in "qcom_q6v5_mss.c". - */ -void qcom_deregister_ipa_notify(struct rproc *rproc); - -#else /* !IS_ENABLED(CONFIG_QCOM_Q6V5_IPA_NOTIFY) */ - -struct qcom_rproc_ipa_notify { /* empty */ }; - -#define qcom_add_ipa_notify_subdev(rproc, ipa_notify) /* no-op */ -#define qcom_remove_ipa_notify_subdev(rproc, ipa_notify) /* no-op */ - -#endif /* !IS_ENABLED(CONFIG_QCOM_Q6V5_IPA_NOTIFY) */ - -#endif /* !__QCOM_Q6V5_IPA_NOTIFY_H__ */ diff --git a/include/linux/remoteproc/qcom_rproc.h b/include/linux/remoteproc/qcom_rproc.h index fa8e38681b4b..647051662174 100644 --- a/include/linux/remoteproc/qcom_rproc.h +++ b/include/linux/remoteproc/qcom_rproc.h @@ -5,17 +5,43 @@ struct notifier_block; #if IS_ENABLED(CONFIG_QCOM_RPROC_COMMON) -int qcom_register_ssr_notifier(struct notifier_block *nb); -void qcom_unregister_ssr_notifier(struct notifier_block *nb); +/** + * enum qcom_ssr_notify_type - Startup/Shutdown events related to a remoteproc + * processor. + * + * @QCOM_SSR_BEFORE_POWERUP: Remoteproc about to start (prepare stage) + * @QCOM_SSR_AFTER_POWERUP: Remoteproc is running (start stage) + * @QCOM_SSR_BEFORE_SHUTDOWN: Remoteproc crashed or shutting down (stop stage) + * @QCOM_SSR_AFTER_SHUTDOWN: Remoteproc is down (unprepare stage) + */ +enum qcom_ssr_notify_type { + QCOM_SSR_BEFORE_POWERUP, + QCOM_SSR_AFTER_POWERUP, + QCOM_SSR_BEFORE_SHUTDOWN, + QCOM_SSR_AFTER_SHUTDOWN, +}; + +struct qcom_ssr_notify_data { + const char *name; + bool crashed; +}; + +void *qcom_register_ssr_notifier(const char *name, struct notifier_block *nb); +int qcom_unregister_ssr_notifier(void *notify, struct notifier_block *nb); #else -static inline int qcom_register_ssr_notifier(struct notifier_block *nb) +static inline void *qcom_register_ssr_notifier(const char *name, + struct notifier_block *nb) { - return 0; + return NULL; } -static inline void qcom_unregister_ssr_notifier(struct notifier_block *nb) {} +static inline int qcom_unregister_ssr_notifier(void *notify, + struct notifier_block *nb) +{ + return 0; +} #endif diff --git a/include/uapi/linux/remoteproc_cdev.h b/include/uapi/linux/remoteproc_cdev.h new file mode 100644 index 000000000000..c43768e4b0dc --- /dev/null +++ b/include/uapi/linux/remoteproc_cdev.h @@ -0,0 +1,37 @@ +/* SPDX-License-Identifier: GPL-2.0-only WITH Linux-syscall-note */ +/* + * IOCTLs for Remoteproc's character device interface. + * + * Copyright (c) 2020, The Linux Foundation. All rights reserved. + */ + +#ifndef _UAPI_REMOTEPROC_CDEV_H_ +#define _UAPI_REMOTEPROC_CDEV_H_ + +#include <linux/ioctl.h> +#include <linux/types.h> + +#define RPROC_MAGIC 0xB7 + +/* + * The RPROC_SET_SHUTDOWN_ON_RELEASE ioctl allows to enable/disable the shutdown of a remote + * processor automatically when the controlling userpsace closes the char device interface. + * + * input parameter: integer + * 0 : disable automatic shutdown + * other : enable automatic shutdown + */ +#define RPROC_SET_SHUTDOWN_ON_RELEASE _IOW(RPROC_MAGIC, 1, __s32) + +/* + * The RPROC_GET_SHUTDOWN_ON_RELEASE ioctl gets information about whether the automatic shutdown of + * a remote processor is enabled or disabled when the controlling userspace closes the char device + * interface. + * + * output parameter: integer + * 0 : automatic shutdown disable + * other : automatic shutdown enable + */ +#define RPROC_GET_SHUTDOWN_ON_RELEASE _IOR(RPROC_MAGIC, 2, __s32) + +#endif |