/* SPDX-License-Identifier: GPL-2.0-or-later */ /* * Copyright (c) 2009-2013, NVIDIA Corporation. All rights reserved. */ #ifndef __LINUX_HOST1X_H #define __LINUX_HOST1X_H #include #include enum host1x_class { HOST1X_CLASS_HOST1X = 0x1, HOST1X_CLASS_GR2D = 0x51, HOST1X_CLASS_GR2D_SB = 0x52, HOST1X_CLASS_VIC = 0x5D, HOST1X_CLASS_GR3D = 0x60, }; struct host1x_client; /** * struct host1x_client_ops - host1x client operations * @init: host1x client initialization code * @exit: host1x client tear down code */ struct host1x_client_ops { int (*init)(struct host1x_client *client); int (*exit)(struct host1x_client *client); }; /** * struct host1x_client - host1x client structure * @list: list node for the host1x client * @parent: pointer to struct device representing the host1x controller * @dev: pointer to struct device backing this host1x client * @ops: host1x client operations * @class: host1x class represented by this client * @channel: host1x channel associated with this client * @syncpts: array of syncpoints requested for this client * @num_syncpts: number of syncpoints requested for this client */ struct host1x_client { struct list_head list; struct device *parent; struct device *dev; const struct host1x_client_ops *ops; enum host1x_class class; struct host1x_channel *channel; struct host1x_syncpt **syncpts; unsigned int num_syncpts; }; /* * host1x buffer objects */ struct host1x_bo; struct sg_table; struct host1x_bo_ops { struct host1x_bo *(*get)(struct host1x_bo *bo); void (*put)(struct host1x_bo *bo); dma_addr_t (*pin)(struct host1x_bo *bo, struct sg_table **sgt); void (*unpin)(struct host1x_bo *bo, struct sg_table *sgt); void *(*mmap)(struct host1x_bo *bo); void (*munmap)(struct host1x_bo *bo, void *addr); void *(*kmap)(struct host1x_bo *bo, unsigned int pagenum); void (*kunmap)(struct host1x_bo *bo, unsigned int pagenum, void *addr); }; struct host1x_bo { const struct host1x_bo_ops *ops; }; static inline void host1x_bo_init(struct host1x_bo *bo, const struct host1x_bo_ops *ops) { bo->ops = ops; } static inline struct host1x_bo *host1x_bo_get(struct host1x_bo *bo) { return bo->ops->get(bo); } static inline void host1x_bo_put(struct host1x_bo *bo) { bo->ops->put(bo); } static inline dma_addr_t host1x_bo_pin(struct host1x_bo *bo, struct sg_table **sgt) { return bo->ops->pin(bo, sgt); } static inline void host1x_bo_unpin(struct host1x_bo *bo, struct sg_table *sgt) { bo->ops->unpin(bo, sgt); } static inline void *host1x_bo_mmap(struct host1x_bo *bo) { return bo->ops->mmap(bo); } static inline void host1x_bo_munmap(struct host1x_bo *bo, void *addr) { bo->ops->munmap(bo, addr); } static inline void *host1x_bo_kmap(struct host1x_bo *bo, unsigned int pagenum) { return bo->ops->kmap(bo, pagenum); } static inline void host1x_bo_kunmap(struct host1x_bo *bo, unsigned int pagenum, void *addr) { bo->ops->kunmap(bo, pagenum, addr); } /* * host1x syncpoints */ #define HOST1X_SYNCPT_CLIENT_MANAGED (1 << 0) #define HOST1X_SYNCPT_HAS_BASE (1 << 1) struct host1x_syncpt_base; struct host1x_syncpt; struct host1x; struct host1x_syncpt *host1x_syncpt_get(struct host1x *host, u32 id); u32 host1x_syncpt_id(struct host1x_syncpt *sp); u32 host1x_syncpt_read_min(struct host1x_syncpt *sp); u32 host1x_syncpt_read_max(struct host1x_syncpt *sp); u32 host1x_syncpt_read(struct host1x_syncpt *sp); int host1x_syncpt_incr(struct host1x_syncpt *sp); u32 host1x_syncpt_incr_max(struct host1x_syncpt *sp, u32 incrs); int host1x_syncpt_wait(struct host1x_syncpt *sp, u32 thresh, long timeout, u32 *value); struct host1x_syncpt *host1x_syncpt_request(struct host1x_client *client, unsigned long flags); void host1x_syncpt_free(struct host1x_syncpt *sp); struct host1x_syncpt_base *host1x_syncpt_get_base(struct host1x_syncpt *sp); u32 host1x_syncpt_base_id(struct host1x_syncpt_base *base); /* * host1x channel */ struct host1x_channel; struct host1x_job; struct host1x_channel *host1x_channel_request(struct device *dev); struct host1x_channel *host1x_channel_get(struct host1x_channel *channel); void host1x_channel_put(struct host1x_channel *channel); int host1x_job_submit(struct host1x_job *job); /* * host1x job */ struct host1x_reloc { struct { struct host1x_bo *bo; unsigned long offset; } cmdbuf; struct { struct host1x_bo *bo; unsigned long offset; } target; unsigned long shift; }; struct host1x_job { /* When refcount goes to zero, job can be freed */ struct kref ref; /* List entry */ struct list_head list; /* Channel where job is submitted to */ struct host1x_channel *channel; /* client where the job originated */ struct host1x_client *client; /* Gathers and their memory */ struct host1x_job_gather *gathers; unsigned int num_gathers; /* Array of handles to be pinned & unpinned */ struct host1x_reloc *relocs; unsigned int num_relocs; struct host1x_job_unpin_data *unpins; unsigned int num_unpins; dma_addr_t *addr_phys; dma_addr_t *gather_addr_phys; dma_addr_t *reloc_addr_phys; /* Sync point id, number of increments and end related to the submit */ u32 syncpt_id; u32 syncpt_incrs; u32 syncpt_end; /* Maximum time to wait for this job */ unsigned int timeout; /* Index and number of slots used in the push buffer */ unsigned int first_get; unsigned int num_slots; /* Copy of gathers */ size_t gather_copy_size; dma_addr_t gather_copy; u8 *gather_copy_mapped; /* Check if register is marked as an address reg */ int (*is_addr_reg)(struct device *dev, u32 class, u32 reg); /* Check if class belongs to the unit */ int (*is_valid_class)(u32 class); /* Request a SETCLASS to this class */ u32 class; /* Add a channel wait for previous ops to complete */ bool serialize; }; struct host1x_job *host1x_job_alloc(struct host1x_channel *ch, u32 num_cmdbufs, u32 num_relocs); void host1x_job_add_gather(struct host1x_job *job, struct host1x_bo *bo, unsigned int words, unsigned int offset); struct host1x_job *host1x_job_get(struct host1x_job *job); void host1x_job_put(struct host1x_job *job); int host1x_job_pin(struct host1x_job *job, struct device *dev); void host1x_job_unpin(struct host1x_job *job); /* * subdevice probe infrastructure */ struct host1x_device; /** * struct host1x_driver - host1x logical device driver * @driver: core driver * @subdevs: table of OF device IDs matching subdevices for this driver * @list: list node for the driver * @probe: called when the host1x logical device is probed * @remove: called when the host1x logical device is removed * @shutdown: called when the host1x logical device is shut down */ struct host1x_driver { struct device_driver driver; const struct of_device_id *subdevs; struct list_head list; int (*probe)(struct host1x_device *device); int (*remove)(struct host1x_device *device); void (*shutdown)(struct host1x_device *device); }; static inline struct host1x_driver * to_host1x_driver(struct device_driver *driver) { return container_of(driver, struct host1x_driver, driver); } int host1x_driver_register_full(struct host1x_driver *driver, struct module *owner); void host1x_driver_unregister(struct host1x_driver *driver); #define host1x_driver_register(driver) \ host1x_driver_register_full(driver, THIS_MODULE) struct host1x_device { struct host1x_driver *driver; struct list_head list; struct device dev; struct mutex subdevs_lock; struct list_head subdevs; struct list_head active; struct mutex clients_lock; struct list_head clients; bool registered; }; static inline struct host1x_device *to_host1x_device(struct device *dev) { return container_of(dev, struct host1x_device, dev); } int host1x_device_init(struct host1x_device *device); int host1x_device_exit(struct host1x_device *device); int host1x_client_register(struct host1x_client *client); int host1x_client_unregister(struct host1x_client *client); struct tegra_mipi_device; struct tegra_mipi_device *tegra_mipi_request(struct device *device); void tegra_mipi_free(struct tegra_mipi_device *device); int tegra_mipi_enable(struct tegra_mipi_device *device); int tegra_mipi_disable(struct tegra_mipi_device *device); int tegra_mipi_calibrate(struct tegra_mipi_device *device); #endif