Manual Pages for UNIX Operating System command usage for man ddi_intr_clr_mask

Kernel Functions for Drivers                ddi_intr_set_mask(9F)



NAME
     ddi_intr_set_mask, ddi_intr_clr_mask - set or clear mask for
     a given interrupt

SYNOPSIS
     #include 
     #include 
     #include 
     #include 

     int ddi_intr_set_mask(ddi_intr_handle_t h);


     int ddi_intr_clr_mask(ddi_intr_handle_t h);


INTERFACE LEVEL
     Solaris DDI specific (Solaris DDI).

PARAMETERS
     h    DDI interrupt handle


DESCRIPTION
     The ddi_intr_set_mask() function masks the  given  interrupt
     pointed  to by the device's interrupt handle h if the device
     or  host  bridge  supports  the   masking   operation.   The
     ddi_intr_get_cap()    function    returns    the   RO   flag
     DDI_INTR_FLAG_MASKABLE if the device or host bridge supports
     interrupt  mask bits for the given interrupt type. In flight
     interrupts can still be taken and delivered to the driver.


     The ddi_intr_clr_mask() function unmasks the given interrupt
     pointed  by the device's interrupt handle h if the device or
     host bridge supports the masking operation.


     The ddi_intr_set_mask()  and  ddi_intr_clr_mask()  functions
     should  be called only if an interrupt is enabled. Otherwise
     the framework will return DDI_EINVAL to such calls.


     The mask cannot be cleared directly if the OS implementation
     has  also  temporarily  masked  the  interrupt.  A  call  to
     ddi_intr_clr_mask()  must  be  preceded   by   a   call   to
     ddi_intr_set_mask().   It   is   not   necessary   to   call
     ddi_intr_clr_mask() when adding and enabling the interrupt.

RETURN VALUES
     The ddi_intr_set_mask()  and  ddi_intr_clr_mask()  functions
     return:



SunOS 5.11          Last change: 05 Apri 2006                   1






Kernel Functions for Drivers                ddi_intr_set_mask(9F)



     DDI_SUCCESS    On success.


     DDI_EINVAL     On encountering invalid input  parameters  or
                    when an interrupt is not enabled.


     DDI_FAILURE    On any implementation specific failure.


     DDI_ENOTSUP    On device not supporting operation.


CONTEXT
     The ddi_intr_set_mask()  and  ddi_intr_clr_mask()  functions
     can be called from any context.

ATTRIBUTES
     See attributes(5) for descriptions of the  following  attri-
     butes:



     ____________________________________________________________
    |       ATTRIBUTE TYPE        |       ATTRIBUTE VALUE       |
    |_____________________________|_____________________________|
    | Interface Stability         | Committed                   |
    |_____________________________|_____________________________|


SEE ALSO
     attributes(5),                   ddi_intr_block_disable(9F),
     ddi_intr_block_enable(9F),             ddi_intr_disable(9F),
     ddi_intr_enable(9F), ddi_intr_get_pending(9F)


     Writing Device Drivers

NOTES
     Consumers of these interfaces should verify that the  return
     value  is  not equal to DDI_SUCCESS. Incomplete checking for
     failure codes could result in  inconsistent  behavior  among
     platforms.












SunOS 5.11          Last change: 05 Apri 2006                   2