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authorHeiko Carstens <heiko.carstens@de.ibm.com>2007-02-05 23:18:37 +0300
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2007-02-05 23:18:37 +0300
commitab14de6c37fae22911ba99f4171613e6d758050b (patch)
tree7545169fe9d64a82616ae37f2b6c1a420c77f30f /include/asm-s390/sclp.h
parent31ee4b2f40994e8b21691f85cdd4052551a789b7 (diff)
downloadlinux-ab14de6c37fae22911ba99f4171613e6d758050b.tar.xz
[S390] Convert memory detection into C code.
Hopefully this will make it more maintainable and less error prone. Code makes use of search_exception_tables(). Since it calls this function before the kernel exeception table is sorted, there is an early call to sort_main_extable(). This way it's easy to use the already present infrastructure of fixup sections. Also this would allows to easily convert the rest of head[31|64].S into C code. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'include/asm-s390/sclp.h')
-rw-r--r--include/asm-s390/sclp.h39
1 files changed, 39 insertions, 0 deletions
diff --git a/include/asm-s390/sclp.h b/include/asm-s390/sclp.h
new file mode 100644
index 000000000000..468b97018405
--- /dev/null
+++ b/include/asm-s390/sclp.h
@@ -0,0 +1,39 @@
+/*
+ * include/asm-s390/sclp.h
+ *
+ * Copyright IBM Corp. 2007
+ * Author(s): Heiko Carstens <heiko.carstens@de.ibm.com>
+ */
+
+#ifndef _ASM_S390_SCLP_H
+#define _ASM_S390_SCLP_H
+
+#include <linux/types.h>
+
+struct sccb_header {
+ u16 length;
+ u8 function_code;
+ u8 control_mask[3];
+ u16 response_code;
+} __attribute__((packed));
+
+#define LOADPARM_LEN 8
+
+struct sclp_readinfo_sccb {
+ struct sccb_header header; /* 0-7 */
+ u16 rnmax; /* 8-9 */
+ u8 rnsize; /* 10 */
+ u8 _reserved0[24 - 11]; /* 11-23 */
+ u8 loadparm[LOADPARM_LEN]; /* 24-31 */
+ u8 _reserved1[91 - 32]; /* 32-90 */
+ u8 flags; /* 91 */
+ u8 _reserved2[100 - 92]; /* 92-99 */
+ u32 rnsize2; /* 100-103 */
+ u64 rnmax2; /* 104-111 */
+ u8 _reserved3[4096 - 112]; /* 112-4095 */
+} __attribute__((packed, aligned(4096)));
+
+extern struct sclp_readinfo_sccb s390_readinfo_sccb;
+extern void sclp_readinfo_early(void);
+
+#endif /* _ASM_S390_SCLP_H */