Commit 2ead66b5 authored by Yijing Wang's avatar Yijing Wang Committed by Tony Luck
Browse files

PCI/IA64: SN: use normal resource instead of pci_window 



Pci_window in pci_controller will not be used again,
use normal resource instead of pci_window in
sn_legacy_pci_window_fixup(), this patch is to prepare
to remove pci_window in IA64.

Signed-off-by: default avatarYijing Wang <wangyijing@huawei.com>
Cc: John Keller <jpk@sgi.com>
Cc: Jay Lan <jlan@engr.sgi.com>
Cc: Jack Steiner <steiner@sgi.com>
Cc: Mark Maule <maule@sgi.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: linux-ia64@vger.kernel.org
Signed-off-by: default avatarTony Luck <tony.luck@intel.com>
parent c60fb074

arch/ia64/sn/kernel/io_init.c

+26 −30
Original line number Diff line number Diff line
@@ -118,34 +118,26 @@ static void __init sn_fixup_ionodes(void) 
}



/*

 * sn_pci_legacy_window_fixup - Create PCI controller windows for

 * sn_pci_legacy_window_fixup - Setup PCI resources for

 *				legacy IO and MEM space. This needs to

 *				be done here, as the PROM does not have

 *				ACPI support defining the root buses

 *				and their resources (_CRS),

 */

static void

sn_legacy_pci_window_fixup(struct pci_controller *controller,

sn_legacy_pci_window_fixup(struct resource *res,

		u64 legacy_io, u64 legacy_mem)

{

		controller->window = kcalloc(2, sizeof(struct pci_window),

					     GFP_KERNEL);

		BUG_ON(controller->window == NULL);

		controller->window[0].offset = legacy_io;

		controller->window[0].resource.name = "legacy_io";

		controller->window[0].resource.flags = IORESOURCE_IO;

		controller->window[0].resource.start = legacy_io;

		controller->window[0].resource.end =

	    			controller->window[0].resource.start + 0xffff;

		controller->window[0].resource.parent = &ioport_resource;

		controller->window[1].offset = legacy_mem;

		controller->window[1].resource.name = "legacy_mem";

		controller->window[1].resource.flags = IORESOURCE_MEM;

		controller->window[1].resource.start = legacy_mem;

		controller->window[1].resource.end =

	    	       controller->window[1].resource.start + (1024 * 1024) - 1;

		controller->window[1].resource.parent = &iomem_resource;

		controller->windows = 2;

		res[0].name = "legacy_io";

		res[0].flags = IORESOURCE_IO;

		res[0].start = legacy_io;

		res[0].end = res[0].start + 0xffff;

		res[0].parent = &ioport_resource;

		res[1].name = "legacy_mem";

		res[1].flags = IORESOURCE_MEM;

		res[1].start = legacy_mem;

		res[1].end = res[1].start + (1024 * 1024) - 1;

		res[1].parent = &iomem_resource;

}



/*
@@ -244,8 +236,8 @@ sn_pci_controller_fixup(int segment, int busnum, struct pci_bus *bus) 
	s64 status = 0;

	struct pci_controller *controller;

	struct pcibus_bussoft *prom_bussoft_ptr;

	struct resource *res;

	LIST_HEAD(resources);

	int i;



 	status = sal_get_pcibus_info((u64) segment, (u64) busnum,

 				     (u64) ia64_tpa(&prom_bussoft_ptr));
@@ -257,19 +249,23 @@ sn_pci_controller_fixup(int segment, int busnum, struct pci_bus *bus) 
	BUG_ON(!controller);

	controller->segment = segment;



	res = kcalloc(2, sizeof(struct resource), GFP_KERNEL);

	BUG_ON(!res);



	/*

	 * Temporarily save the prom_bussoft_ptr for use by sn_bus_fixup().

	 * (platform_data will be overwritten later in sn_common_bus_fixup())

	 */

	controller->platform_data = prom_bussoft_ptr;



	sn_legacy_pci_window_fixup(controller,

	sn_legacy_pci_window_fixup(res,

			prom_bussoft_ptr->bs_legacy_io,

			prom_bussoft_ptr->bs_legacy_mem);

	for (i = 0; i < controller->windows; i++)

		pci_add_resource_offset(&resources,

					&controller->window[i].resource,

					controller->window[i].offset);

	pci_add_resource_offset(&resources,	&res[0],

			prom_bussoft_ptr->bs_legacy_io);

	pci_add_resource_offset(&resources,	&res[1],

			prom_bussoft_ptr->bs_legacy_mem);



	bus = pci_scan_root_bus(NULL, busnum, &pci_root_ops, controller,

				&resources);

 	if (bus == NULL)
@@ -280,7 +276,7 @@ sn_pci_controller_fixup(int segment, int busnum, struct pci_bus *bus) 
	return;



error_return:



	kfree(res);

	kfree(controller);

	return;

}

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