Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / arch / s390 / include / asm / ipl.h

diff --git a/kernel/arch/s390/include/asm/ipl.h b/kernel/arch/s390/include/asm/ipl.h
new file mode 100644 (file)
index 0000000..ece606c
--- /dev/null
+++ b/kernel/arch/s390/include/asm/ipl.h
@@ -0,0 +1,182 @@
+/*
+ * s390 (re)ipl support
+ *
+ * Copyright IBM Corp. 2007
+ */
+
+#ifndef _ASM_S390_IPL_H
+#define _ASM_S390_IPL_H
+
+#include <asm/lowcore.h>
+#include <asm/types.h>
+#include <asm/cio.h>
+#include <asm/setup.h>
+
+#define IPL_PARMBLOCK_ORIGIN   0x2000
+
+#define IPL_PARM_BLK_FCP_LEN (sizeof(struct ipl_list_hdr) + \
+                             sizeof(struct ipl_block_fcp))
+
+#define IPL_PARM_BLK0_FCP_LEN (sizeof(struct ipl_block_fcp) + 16)
+
+#define IPL_PARM_BLK_CCW_LEN (sizeof(struct ipl_list_hdr) + \
+                             sizeof(struct ipl_block_ccw))
+
+#define IPL_PARM_BLK0_CCW_LEN (sizeof(struct ipl_block_ccw) + 16)
+
+#define IPL_MAX_SUPPORTED_VERSION (0)
+
+#define IPL_PARMBLOCK_START    ((struct ipl_parameter_block *) \
+                                IPL_PARMBLOCK_ORIGIN)
+#define IPL_PARMBLOCK_SIZE     (IPL_PARMBLOCK_START->hdr.len)
+
+struct ipl_list_hdr {
+       u32 len;
+       u8  reserved1[3];
+       u8  version;
+       u32 blk0_len;
+       u8  pbt;
+       u8  flags;
+       u16 reserved2;
+       u8  loadparm[8];
+} __attribute__((packed));
+
+struct ipl_block_fcp {
+       u8  reserved1[305-1];
+       u8  opt;
+       u8  reserved2[3];
+       u16 reserved3;
+       u16 devno;
+       u8  reserved4[4];
+       u64 wwpn;
+       u64 lun;
+       u32 bootprog;
+       u8  reserved5[12];
+       u64 br_lba;
+       u32 scp_data_len;
+       u8  reserved6[260];
+       u8  scp_data[];
+} __attribute__((packed));
+
+#define DIAG308_VMPARM_SIZE    64
+#define DIAG308_SCPDATA_SIZE   (PAGE_SIZE - (sizeof(struct ipl_list_hdr) + \
+                                offsetof(struct ipl_block_fcp, scp_data)))
+
+struct ipl_block_ccw {
+       u8  reserved1[84];
+       u8  reserved2[2];
+       u16 devno;
+       u8  vm_flags;
+       u8  reserved3[3];
+       u32 vm_parm_len;
+       u8  nss_name[8];
+       u8  vm_parm[DIAG308_VMPARM_SIZE];
+       u8  reserved4[8];
+} __attribute__((packed));
+
+struct ipl_parameter_block {
+       struct ipl_list_hdr hdr;
+       union {
+               struct ipl_block_fcp fcp;
+               struct ipl_block_ccw ccw;
+       } ipl_info;
+} __attribute__((packed,aligned(4096)));
+
+/*
+ * IPL validity flags
+ */
+extern u32 ipl_flags;
+extern u32 dump_prefix_page;
+
+struct dump_save_areas {
+       struct save_area_ext **areas;
+       int count;
+};
+
+extern struct dump_save_areas dump_save_areas;
+struct save_area_ext *dump_save_area_create(int cpu);
+
+extern void do_reipl(void);
+extern void do_halt(void);
+extern void do_poff(void);
+extern void ipl_save_parameters(void);
+extern void ipl_update_parameters(void);
+extern size_t append_ipl_vmparm(char *, size_t);
+extern size_t append_ipl_scpdata(char *, size_t);
+
+enum {
+       IPL_DEVNO_VALID         = 1,
+       IPL_PARMBLOCK_VALID     = 2,
+       IPL_NSS_VALID           = 4,
+};
+
+enum ipl_type {
+       IPL_TYPE_UNKNOWN        = 1,
+       IPL_TYPE_CCW            = 2,
+       IPL_TYPE_FCP            = 4,
+       IPL_TYPE_FCP_DUMP       = 8,
+       IPL_TYPE_NSS            = 16,
+};
+
+struct ipl_info
+{
+       enum ipl_type type;
+       union {
+               struct {
+                       struct ccw_dev_id dev_id;
+               } ccw;
+               struct {
+                       struct ccw_dev_id dev_id;
+                       u64 wwpn;
+                       u64 lun;
+               } fcp;
+               struct {
+                       char name[NSS_NAME_SIZE + 1];
+               } nss;
+       } data;
+};
+
+extern struct ipl_info ipl_info;
+extern void setup_ipl(void);
+
+/*
+ * DIAG 308 support
+ */
+enum diag308_subcode  {
+       DIAG308_REL_HSA = 2,
+       DIAG308_IPL     = 3,
+       DIAG308_DUMP    = 4,
+       DIAG308_SET     = 5,
+       DIAG308_STORE   = 6,
+};
+
+enum diag308_ipl_type {
+       DIAG308_IPL_TYPE_FCP    = 0,
+       DIAG308_IPL_TYPE_CCW    = 2,
+};
+
+enum diag308_opt {
+       DIAG308_IPL_OPT_IPL     = 0x10,
+       DIAG308_IPL_OPT_DUMP    = 0x20,
+};
+
+enum diag308_flags {
+       DIAG308_FLAGS_LP_VALID  = 0x80,
+};
+
+enum diag308_vm_flags {
+       DIAG308_VM_FLAGS_NSS_VALID      = 0x80,
+       DIAG308_VM_FLAGS_VP_VALID       = 0x40,
+};
+
+enum diag308_rc {
+       DIAG308_RC_OK           = 0x0001,
+       DIAG308_RC_NOCONFIG     = 0x0102,
+};
+
+extern int diag308(unsigned long subcode, void *addr);
+extern void diag308_reset(void);
+extern void store_status(void);
+extern void lgr_info_log(void);
+
+#endif /* _ASM_S390_IPL_H */