IABSD.fr/src/sys/dev/puc

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  Commit

• Author : jcs
  Date : 2020-08-14 18:14:11
  Hash : cbe056bc
  Message : Re-commit Exar XR17V35x serial port support previously backed out: The Exar XR17V354 has 4 ports that have a 256-byte FIFO, use a frequency of 125Mhz, and have a unique sleep register. A custom interrupt handler is setup in puc for these ports so it can check a register which reports which ports triggered the interrupt, rather than having to run comintr for every port every time. To avoid probing for these ports in com_attach_subr which requires access to registers that may be reserved on certain platforms, pass the sc_uarttype from com_puc_attach since the port type is already known based on the puc device vendor/id. Input from kettenis, tested in snaps

• Files
• com_puc.c
• lpt_puc.c