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[PATCH] shpchp: reduce dependence on ACPI

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Reduce the SHPC hotplug driver's dependence on ACPI. We don't
walk the acpi namespace anymore to build a list of bridges and
devices. The remaining interaction with ACPI is to run the
_OSHP method to transition control of hotplug hardware from
system BIOS to the shpc hotplug driver, and to run the _HPP
method to get hotplug device parameters like cache line size,
latency timer and SERR/PERR enable from BIOS.

Note that one of the side effects of this patch is that shpchp
does not enable the hot-added device or its DMA bus mastering
automatically now. It expects the device driver to do that.
This may break some drivers and we will have to fix them as
they are reported.

Signed-off-by: Rajesh Shah <rajesh.shah@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
rajesh.shah@intel.com
2005-10-13 12:05:38 -07:00
committed by Greg Kroah-Hartman
parent 7e88ed1996
commit 424600f970
9 changed files with 138 additions and 984 deletions
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2
drivers/pci/hotplug/shpchp_hpc.c
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@@ -1566,8 +1566,8 @@ int shpc_init(struct controller * ctrl,
err("Can't get irq %d for the hotplug controller\n", php_ctlr->irq);
goto abort_free_ctlr;
}
/* Execute OSHP method here */
}
get_hp_hw_control_from_firmware(pdev);
dbg("%s: Before adding HPC to HPC list\n", __FUNCTION__);
/* Add this HPC instance into the HPC list */