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Diffstat (limited to 'arch/ia64/sn/kernel/xp_nofault.S')
| -rw-r--r-- | arch/ia64/sn/kernel/xp_nofault.S | 36 |
1 files changed, 0 insertions, 36 deletions
diff --git a/arch/ia64/sn/kernel/xp_nofault.S b/arch/ia64/sn/kernel/xp_nofault.S deleted file mode 100644 index 98e7c7dbfdd..00000000000 --- a/arch/ia64/sn/kernel/xp_nofault.S +++ /dev/null @@ -1,36 +0,0 @@ -/* - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - * - * Copyright (c) 2004-2007 Silicon Graphics, Inc. All Rights Reserved. - */ - - -/* - * The xp_nofault_PIOR function takes a pointer to a remote PIO register - * and attempts to load and consume a value from it. This function - * will be registered as a nofault code block. In the event that the - * PIO read fails, the MCA handler will force the error to look - * corrected and vector to the xp_error_PIOR which will return an error. - * - * The definition of "consumption" and the time it takes for an MCA - * to surface is processor implementation specific. This code - * is sufficient on Itanium through the Montvale processor family. - * It may need to be adjusted for future processor implementations. - * - * extern int xp_nofault_PIOR(void *remote_register); - */ - - .global xp_nofault_PIOR -xp_nofault_PIOR: - mov r8=r0 // Stage a success return value - ld8.acq r9=[r32];; // PIO Read the specified register - adds r9=1,r9;; // Add to force consumption - srlz.i;; // Allow time for MCA to surface - br.ret.sptk.many b0;; // Return success - - .global xp_error_PIOR -xp_error_PIOR: - mov r8=1 // Return value of 1 - br.ret.sptk.many b0;; // Return failure |