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Aaron Mulder edited this page Mar 29, 2016 · 4 revisions

This a list of Linux API calls made by the iwlwifi code. It's not complete; just sort of a scratch pad of what I've noticed and been unable to immediately resolve via pulling in a Linux macro or something. Bold ones have been addressed, meaning either replaced with something functional via a custom macro or I have a reasonable strategy to replace the specific call every time I come across it.

Spin Locks

  • spinlock_t <<map to OSSpinLock from libkern/OSAtomic.h
  • spin_lock <<map to OSSpinLockLock
  • spin_unlock <<map to OSSpinLockUnlock

Wait Queues

  • Functions
    • wait_queue_head_t
    • wait_event_timeout << (see wait.h)
    • wake_up
  • IOLock Option << seems simplest
    • IOLocks.h
    • define wait_queue_head_t as IOLock *
    • For waiting IOLockLock and IOLockSleepDeadline
    • For notification IOLockWakeup
  • wait_queue option
    • wait_queue_t (see kern/wait_queue.h)
    • wait_queue_alloc(policy)
    • wait_queue_assert_wait (?) (with deadline)
    • wait_queue_wakeup_all(wait_queue_t, event_t, wait_result_t)
  • lck_mtx_t option
    • underlying IOLock (see IOLocks.cpp)
    • lck_mtx_t (see kern/locks.h)
    • lck_mtx_alloc_init
    • lck_mtx_lock
    • lck_mtx_sleep_deadline
    • thread_wakeup_prim

Other Items

  • timer_list
  • work_struct
  • delayed_work
  • flush_work (function?)
  • completion variables
  • mutex
  • list_head << map to queue_entry from kern/queue.h Not yet sure whether this is workable; another option bsd/sys/queue.h
  • rcu_read_lock Wikipedia on RCU
  • rcu_read_unlock
  • rcu_dereference (function or macro?)
  • rcu_dereference_protected
  • rcu_head << linked list of callback functions (?)
  • lockdep_is_held
  • atomic64_read
  • atomic64_set
  • kmalloc
  • kfree
  • vfree
  • kzalloc
  • kmem_cache_alloc
  • kmem_cache_free
  • page_address
  • get_page
  • free_pages
  • __free_pages
  • get_random_bytes
  • possible_net_t
  • read_pnet
  • write_pnet
  • device (include/linux/device.h)
  • pci_device_id
  • pci_driver
  • pci_set_drvdata
  • pci_get_drvdata
  • pci_register_driver
  • pci_unregister_driver
  • pr_err
  • sk_buff_head
  • alloc_skb
  • skb_put
  • skb_is_nonlinear
  • skb_network_header
  • skb_network_offset
  • kfree_skb
  • get_unaligned_be16 (working with skb_ above)
  • hweight32 (hamming weight = # of bits set)
  • hweight64
  • device_set_wakeup_enable
  • acpi_handle for CONFIG_ACPI
  • acpi_status
  • acpi_get_handle
  • acpi_string
  • acpi_evaluate_object
  • ACPI_ALLOCATE_BUFFER
  • ACPI_FAILURE
  • local_bh_enable (bottom halves)
  • local_bh_disable
  • va_list, va_start, va_end, va_format (iwl-debug.c)
  • lock_map_acquire_read
  • lock_map_release
  • __releases(foo) and __release(foo)
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