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Commit 61d67f2e authored by Prarit Bhargava's avatar Prarit Bhargava Committed by Tony Luck
Browse files

[IA64-SGI] Add PROM feature set for device flush list 



Introduce PRF_DEVICE_FLUSH_LIST flag for older PROMs.

Signed-off-by: default avatarPrarit Bhargava <prarit@sgi.com>
Signed-off-by: default avatarTony Luck <tony.luck@intel.com>
parent 139366a0

arch/ia64/sn/kernel/io_init.c

+18 −18
Original line number Diff line number Diff line
@@ -10,6 +10,7 @@ 
#include <linux/nodemask.h>

#include <asm/sn/types.h>

#include <asm/sn/addrs.h>

#include <asm/sn/sn_feature_sets.h>

#include <asm/sn/geo.h>

#include <asm/sn/io.h>

#include <asm/sn/pcibr_provider.h>
@@ -173,7 +174,7 @@ sn_pcidev_info_get(struct pci_dev *dev) 
 */

static u8 war_implemented = 0;



static void sn_device_fixup_war(u64 nasid, u64 widget, int device,

static s64 sn_device_fixup_war(u64 nasid, u64 widget, int device,

			       struct sn_flush_device_common *common)

{

	struct sn_flush_device_war *war_list;
@@ -198,8 +199,9 @@ static void sn_device_fixup_war(u64 nasid, u64 widget, int device, 


	dev_entry = war_list + device;

	memcpy(common,dev_entry, sizeof(*common));



	kfree(war_list);



	return isrv.status;

}



/*
@@ -279,23 +281,21 @@ static void sn_fixup_ionodes(void) 
				memset(dev_entry->common, 0x0, sizeof(struct

					     	       sn_flush_device_common));



				status = sal_get_device_dmaflush_list(nasid,

				if (sn_prom_feature_available(

						       PRF_DEVICE_FLUSH_LIST))

					status = sal_get_device_dmaflush_list(

									  nasid,

									 widget,

								       	 device,

						      (u64)(dev_entry->common));

				if (status) {

					if (sn_sal_rev() < 0x0450) {

						/* shortlived WAR for older

						 * PROM images

						 */

						sn_device_fixup_war(nasid,

				else

					status = sn_device_fixup_war(nasid,

								     widget,

							    	     device,

							     dev_entry->common);

					}

					else

						BUG();

				}

				if (status != SALRET_OK)

					panic("SAL call failed: %s\n",

					      ia64_sal_strerror(status));



				spin_lock_init(&dev_entry->sfdl_flush_lock);

			}

include/asm-ia64/sn/sn_feature_sets.h

+4 −3
Original line number Diff line number Diff line
@@ -32,6 +32,7 @@ extern int sn_prom_feature_available(int id); 
 */



#define PRF_PAL_CACHE_FLUSH_SAFE	0

#define PRF_DEVICE_FLUSH_LIST		1