| /* SPDX-License-Identifier: GPL-2.0 */ |
| /* |
| * definitions for external memory segment support |
| * Copyright IBM Corp. 2003 |
| */ |
| |
| #ifndef _ASM_S390X_DCSS_H |
| #define _ASM_S390X_DCSS_H |
| #ifndef __ASSEMBLY__ |
| |
| /* |
| * DCSS segment is defined as a contiguous range of pages using DEFSEG command. |
| * The range start and end is a page number with a value less than or equal to |
| * 0x7ffffff (see CP Commands and Utilities Reference). |
| */ |
| #define MAX_DCSS_ADDR (512UL * SZ_1G) |
| |
| /* possible values for segment type as returned by segment_info */ |
| #define SEG_TYPE_SW 0 |
| #define SEG_TYPE_EW 1 |
| #define SEG_TYPE_SR 2 |
| #define SEG_TYPE_ER 3 |
| #define SEG_TYPE_SN 4 |
| #define SEG_TYPE_EN 5 |
| #define SEG_TYPE_SC 6 |
| #define SEG_TYPE_EWEN 7 |
| |
| #define SEGMENT_SHARED 0 |
| #define SEGMENT_EXCLUSIVE 1 |
| |
| int segment_load (char *name, int segtype, unsigned long *addr, unsigned long *length); |
| void segment_unload(char *name); |
| void segment_save(char *name); |
| int segment_type (char* name); |
| int segment_modify_shared (char *name, int do_nonshared); |
| void segment_warning(int rc, char *seg_name); |
| |
| #endif |
| #endif |
