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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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#ifndef __LINUX_HOST1X_H#define __LINUX_HOST1X_H
#include <linux/device.h>#include <linux/dma-direction.h>#include <linux/dma-fence.h>#include <linux/spinlock.h>#include <linux/types.h>
enum host1x_class { HOST1X_CLASS_HOST1X = 0x1, HOST1X_CLASS_NVJPG1 = 0x7, HOST1X_CLASS_NVENC = 0x21, HOST1X_CLASS_NVENC1 = 0x22, HOST1X_CLASS_GR2D = 0x51, HOST1X_CLASS_GR2D_SB = 0x52, HOST1X_CLASS_VIC = 0x5D, HOST1X_CLASS_GR3D = 0x60, HOST1X_CLASS_NVJPG = 0xC0, HOST1X_CLASS_NVDEC = 0xF0, HOST1X_CLASS_NVDEC1 = 0xF5, HOST1X_CLASS_OFA = 0xF8,};
struct host1x;struct host1x_client;struct iommu_group;
u64 host1x_get_dma_mask(struct host1x *host1x);
/** * struct host1x_bo_cache - host1x buffer object cache * @mappings: list of mappings * @lock: synchronizes accesses to the list of mappings * * Note that entries are not periodically evicted from this cache and instead need to be * explicitly released. This is used primarily for DRM/KMS where the cache's reference is * released when the last reference to a buffer object represented by a mapping in this * cache is dropped. */struct host1x_bo_cache { struct list_head mappings; struct mutex lock;};
static inline void host1x_bo_cache_init(struct host1x_bo_cache *cache){ INIT_LIST_HEAD(&cache->mappings); mutex_init(&cache->lock);}
static inline void host1x_bo_cache_destroy(struct host1x_bo_cache *cache){ /* XXX warn if not empty? */ mutex_destroy(&cache->lock);}
/** * struct host1x_client_ops - host1x client operations * @early_init: host1x client early initialization code * @init: host1x client initialization code * @exit: host1x client tear down code * @late_exit: host1x client late tear down code * @suspend: host1x client suspend code * @resume: host1x client resume code */struct host1x_client_ops { int (*early_init)(struct host1x_client *client); int (*init)(struct host1x_client *client); int (*exit)(struct host1x_client *client); int (*late_exit)(struct host1x_client *client); int (*suspend)(struct host1x_client *client); int (*resume)(struct host1x_client *client);};
/** * struct host1x_client - host1x client structure * @list: list node for the host1x client * @host: pointer to struct device representing the host1x controller * @dev: pointer to struct device backing this host1x client * @group: IOMMU group that this client is a member of * @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 * @parent: pointer to parent structure * @usecount: reference count for this structure * @lock: mutex for mutually exclusive concurrency * @cache: host1x buffer object cache */struct host1x_client { struct list_head list; struct device *host; struct device *dev; struct iommu_group *group;
const struct host1x_client_ops *ops;
enum host1x_class class; struct host1x_channel *channel;
struct host1x_syncpt **syncpts; unsigned int num_syncpts;
struct host1x_client *parent; unsigned int usecount; struct mutex lock;
struct host1x_bo_cache cache;};
/* * host1x buffer objects */
struct host1x_bo;struct sg_table;
struct host1x_bo_mapping { struct kref ref; struct dma_buf_attachment *attach; enum dma_data_direction direction; struct list_head list; struct host1x_bo *bo; struct sg_table *sgt; unsigned int chunks; struct device *dev; dma_addr_t phys; size_t size;
struct host1x_bo_cache *cache; struct list_head entry;};
static inline struct host1x_bo_mapping *to_host1x_bo_mapping(struct kref *ref){ return container_of(ref, struct host1x_bo_mapping, ref);}
/** * struct host1x_bo_ops - operations implemented by a host1x_bo provider * * @pin: create a DMA mapping. Implementation must not touch the bo's refcount. * @unpin: destroy a DMA mapping. Implementation must not touch the bo's refcount. */struct host1x_bo_ops { struct host1x_bo *(*get)(struct host1x_bo *bo); void (*put)(struct host1x_bo *bo); struct host1x_bo_mapping *(*pin)(struct device *dev, struct host1x_bo *bo, enum dma_data_direction dir); void (*unpin)(struct host1x_bo_mapping *map); void *(*mmap)(struct host1x_bo *bo); void (*munmap)(struct host1x_bo *bo, void *addr);};
struct host1x_bo { const struct host1x_bo_ops *ops; struct list_head mappings; spinlock_t lock;};
static inline void host1x_bo_init(struct host1x_bo *bo, const struct host1x_bo_ops *ops){ INIT_LIST_HEAD(&bo->mappings); spin_lock_init(&bo->lock); 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);}
struct host1x_bo_mapping *host1x_bo_pin(struct device *dev, struct host1x_bo *bo, enum dma_data_direction dir, struct host1x_bo_cache *cache);void host1x_bo_unpin(struct host1x_bo_mapping *map);void host1x_bo_clear_cached_mappings(struct host1x_bo *bo);
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);}
/* * 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_by_id(struct host1x *host, u32 id);struct host1x_syncpt *host1x_syncpt_get_by_id_noref(struct host1x *host, u32 id);struct host1x_syncpt *host1x_syncpt_get(struct host1x_syncpt *sp);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_put(struct host1x_syncpt *sp);struct host1x_syncpt *host1x_syncpt_alloc(struct host1x *host, unsigned long flags, const char *name);
struct host1x_syncpt_base *host1x_syncpt_get_base(struct host1x_syncpt *sp);u32 host1x_syncpt_base_id(struct host1x_syncpt_base *base);
void host1x_syncpt_release_vblank_reservation(struct host1x_client *client, u32 syncpt_id);
struct dma_fence *host1x_fence_create(struct host1x_syncpt *sp, u32 threshold, bool timeout);void host1x_fence_cancel(struct dma_fence *fence);
/* * host1x channel */
struct host1x_channel;struct host1x_job;
struct host1x_channel *host1x_channel_request(struct host1x_client *client);struct host1x_channel *host1x_channel_get(struct host1x_channel *channel);void host1x_channel_stop(struct host1x_channel *channel);void host1x_channel_put(struct host1x_channel *channel);int host1x_job_submit(struct host1x_job *job);
/* * host1x job */
#define HOST1X_RELOC_READ (1 << 0)#define HOST1X_RELOC_WRITE (1 << 1)
struct host1x_reloc { struct { struct host1x_bo *bo; unsigned long offset; } cmdbuf; struct { struct host1x_bo *bo; unsigned long offset; } target; unsigned long shift; unsigned long flags;};
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_cmd *cmds; unsigned int num_cmds;
/* 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 */ struct host1x_syncpt *syncpt; u32 syncpt_incrs; u32 syncpt_end;
/* Completion fence for job tracking */ struct dma_fence *fence; struct dma_fence_cb fence_cb;
/* Maximum time to wait for this job */ unsigned int timeout;
/* Job has timed out and should be released */ bool cancelled;
/* 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;
/* Fast-forward syncpoint increments on job timeout */ bool syncpt_recovery;
/* Callback called when job is freed */ void (*release)(struct host1x_job *job); void *user_data;
/* Whether host1x-side firewall should be ran for this job or not */ bool enable_firewall;
/* Options for configuring engine data stream ID */ /* Context device to use for job */ struct host1x_memory_context *memory_context; /* Stream ID to use if context isolation is disabled (!memory_context) */ u32 engine_fallback_streamid; /* Engine offset to program stream ID to */ u32 engine_streamid_offset;};
struct host1x_job *host1x_job_alloc(struct host1x_channel *ch, u32 num_cmdbufs, u32 num_relocs, bool skip_firewall);void host1x_job_add_gather(struct host1x_job *job, struct host1x_bo *bo, unsigned int words, unsigned int offset);void host1x_job_add_wait(struct host1x_job *job, u32 id, u32 thresh, bool relative, u32 next_class);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); void (*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;
struct device_dma_parameters dma_parms;};
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);
void __host1x_client_init(struct host1x_client *client, struct lock_class_key *key);void host1x_client_exit(struct host1x_client *client);
#define host1x_client_init(client) \ ({ \ static struct lock_class_key __key; \ __host1x_client_init(client, &__key); \ })
int __host1x_client_register(struct host1x_client *client);
/* * Note that this wrapper calls __host1x_client_init() for compatibility * with existing callers. Callers that want to separately initialize and * register a host1x client must first initialize using either of the * __host1x_client_init() or host1x_client_init() functions and then use * the low-level __host1x_client_register() function to avoid the client * getting reinitialized. */#define host1x_client_register(client) \ ({ \ static struct lock_class_key __key; \ __host1x_client_init(client, &__key); \ __host1x_client_register(client); \ })
void host1x_client_unregister(struct host1x_client *client);
int host1x_client_suspend(struct host1x_client *client);int host1x_client_resume(struct host1x_client *client);
/* host1x memory contexts */
struct host1x_memory_context { struct host1x *host;
refcount_t ref; struct pid *owner;
struct device_dma_parameters dma_parms; struct device dev; u64 dma_mask; u32 stream_id;};
#ifdef CONFIG_IOMMU_APIstruct host1x_memory_context *host1x_memory_context_alloc(struct host1x *host1x, struct device *dev, struct pid *pid);void host1x_memory_context_get(struct host1x_memory_context *cd);void host1x_memory_context_put(struct host1x_memory_context *cd);#elsestatic inline struct host1x_memory_context *host1x_memory_context_alloc(struct host1x *host1x, struct device *dev, struct pid *pid){ return NULL;}
static inline void host1x_memory_context_get(struct host1x_memory_context *cd){}
static inline void host1x_memory_context_put(struct host1x_memory_context *cd){}#endif
#endif