cvs commit: src/sys/dev/acpica acpi.c acpi_cpu.c

[Nate Lawson]

njl         2003/11/19 12:27:06 PST

  FreeBSD src repository

  Modified files:
    sys/dev/acpica       acpi.c acpi_cpu.c 
  Log:
  * Add a DEVMETHOD for acpi so that child detach methods get called.  Add
    an acpi_cpu method for shutdown that disables entry to acpi_cpu_idle
    and then IPIs/waits for threads to exit.  This fixes a panic late in
    reboot in the SMP case.
  
  * In the !SMP case, don't use the processor id filled out by the MADT
    since there can only be one processor.  This was causing a panic in
    acpi_cpu_idle if the id was 1 since the data was being dereferenced from
    cpu_softc[1] even though the actual data was in cpu_softc[0] (which is
    correct).
  
  * Rework the initialization functions so that cpu_idle_hook is written
    late in the boot process.
  
  * Make the P_BLK, P_BLK_LEN, and cpu_cx_count all softc-local variables.
    This will help SMP boxes that have _CST or multiple P_BLKs.  No such
    boxes are known at this time.
  
  * Always allocate the C1 state, even if the P_BLK is invalid.  This means
    we will always take over idling if enabled.  Remove the value -1 as
    valid for cx_lowest since this is redundant with machdep.cpu_idle_hlt.
  
  * Reduce locking for the throttle initialization case to around the write
    to the smi_cmd port.  Add disabled code to write the CST_CNT.  It will
    be enabled once _CST re-evaluation is tested (post 5.2R).
  
  Thank you:      dfr, imp, jhb, marcel, peter
  Tested by:      rwatson, Harald Schmalzbauer <h at schmalzbauer.de>
  Approved by:    re (rwatson)
  
  Revision  Changes    Path
  1.108     +1 -0      src/sys/dev/acpica/acpi.c
  1.20      +203 -109  src/sys/dev/acpica/acpi_cpu.c