cvs commit: src/sys/dev/acpica acpi_timer.c

[Marcel Moolenaar]

marcel      2003/04/29 22:27:02 PDT

  FreeBSD src repository

  Modified files:
    sys/dev/acpica       acpi_timer.c 
  Log:
  o  Don't announce that the timer is good when in fact it isn't timing
     at all (ie reads yield constant values). Display the width as the
     difference between max and min so that constant timers have width
     zero.
  o  Get the address of the timer from the XPmTmrBlk field instead of
     the V1_PmTmrBlk field. The former is a generic address and can
     specify a memory mapped I/O address. Remove <machine/bus_pio.h>
     to account for this. The timer is now properly configured on
     machines with ACPI v2 tables, whether PIO or MEMIO. Note that
     the acpica code converts v1 tables into v2 tables so the address
     is always present in XPmTmrBlk.
  o  Replace the TIMER_READ macro with a call to the read_counter()
     function and add a barrier to make sure that we observe proper
     ordering of the reads.
  
  Revision  Changes    Path
  1.22      +43 -22    src/sys/dev/acpica/acpi_timer.c