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I2O_MSG_OUT_TO_VIRT(9) Message-based devices I2O_MSG_OUT_TO_VIRT(9)

NAME

i2o_msg_out_to_virt - Turn an I2O message to a virtual address

SYNOPSIS

struct i2o_message * i2o_msg_out_to_virt(struct i2o_controller * c, u32 m);

ARGUMENTS

c
controller
m
message engine value

DESCRIPTION

Turn a receive message from an I2O controller bus address into a Linux virtual address. The shared page frame is a linear block so we simply have to shift the offset. This function does not work for sender side messages as they are ioremap objects provided by the I2O controller.

COPYRIGHT

February 2017 Kernel Hackers Manual 3.16