11 files changed, 224 insertions, 27 deletions

diff --git a/include/asm-s390/bug.h b/include/asm-s390/bug.h
index 876898363944..838684dc6d35 100644
--- a/include/asm-s390/bug.h
+++ b/include/asm-s390/bug.h
@@ -1,27 +1,70 @@
-#ifndef _S390_BUG_H
-#define _S390_BUG_H
+#ifndef _ASM_S390_BUG_H
+#define _ASM_S390_BUG_H
 
 #include <linux/kernel.h>
 
 #ifdef CONFIG_BUG
 
-static inline __attribute__((noreturn)) void __do_illegal_op(void)
-{
-#if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 3)
-        __builtin_trap();
+#ifdef CONFIG_64BIT
+#define S390_LONG ".quad"
 #else
-        asm volatile(".long 0");
+#define S390_LONG ".long"
 #endif
-}
 
-#define BUG() do { \
-        printk("kernel BUG at %s:%d!\n", __FILE__, __LINE__); \
-        __do_illegal_op(); \
+#ifdef CONFIG_DEBUG_BUGVERBOSE
+
+#define __EMIT_BUG(x) do {                                      \
+        asm volatile(                                           \
+                "0:     j       0b+2\n"                         \
+                "1:\n"                                          \
+                ".section .rodata.str,\"aMS\",@progbits,1\n"    \
+                "2:     .asciz  \""__FILE__"\"\n"               \
+                ".previous\n"                                   \
+                ".section __bug_table,\"a\"\n"                  \
+                "3:\t"  S390_LONG "\t1b,2b\n"                   \
+                "       .short  %0,%1\n"                        \
+                "       .org    3b+%2\n"                        \
+                ".previous\n"                                   \
+                : : "i" (__LINE__),                             \
+                    "i" (x),                                    \
+                    "i" (sizeof(struct bug_entry)));            \
 } while (0)
 
+#else /* CONFIG_DEBUG_BUGVERBOSE */
+
+#define __EMIT_BUG(x) do {                              \
+        asm volatile(                                   \
+                "0:     j       0b+2\n"                 \
+                "1:\n"                                  \
+                ".section __bug_table,\"a\"\n"          \
+                "2:\t"  S390_LONG "\t1b\n"              \
+                "       .short  %0\n"                   \
+                "       .org    2b+%1\n"                \
+                ".previous\n"                           \
+                : : "i" (x),                            \
+                    "i" (sizeof(struct bug_entry)));    \
+} while (0)
+
+#endif /* CONFIG_DEBUG_BUGVERBOSE */
+
+#define BUG()   __EMIT_BUG(0)
+
+#define WARN_ON(x) ({                                   \
+        typeof(x) __ret_warn_on = (x);                  \
+        if (__builtin_constant_p(__ret_warn_on)) {      \
+                if (__ret_warn_on)                      \
+                        __EMIT_BUG(BUGFLAG_WARNING);    \
+        } else {                                        \
+                if (unlikely(__ret_warn_on))            \
+                        __EMIT_BUG(BUGFLAG_WARNING);    \
+        }                                               \
+        unlikely(__ret_warn_on);                        \
+})
+
 #define HAVE_ARCH_BUG
-#endif
+#define HAVE_ARCH_WARN_ON
+#endif /* CONFIG_BUG */
 
 #include <asm-generic/bug.h>
 
-#endif
+#endif /* _ASM_S390_BUG_H */
diff --git a/include/asm-s390/ccwgroup.h b/include/asm-s390/ccwgroup.h
index d2f9c0d53a97..925b3ddfa141 100644
--- a/include/asm-s390/ccwgroup.h
+++ b/include/asm-s390/ccwgroup.h
@@ -11,6 +11,7 @@ struct ccwgroup_device {
                 CCWGROUP_ONLINE,
         } state;
         atomic_t onoff;
+        struct mutex reg_mutex;
         unsigned int count;             /* number of attached slave devices */
         struct device   dev;            /* master device                    */
         struct ccw_device *cdev[0];     /* variable number, allocate as needed */
diff --git a/include/asm-s390/chpid.h b/include/asm-s390/chpid.h
new file mode 100644
index 000000000000..b203336fd892
--- /dev/null
+++ b/include/asm-s390/chpid.h
@@ -0,0 +1,53 @@
+/*
+ *  drivers/s390/cio/chpid.h
+ *
+ *    Copyright IBM Corp. 2007
+ *    Author(s): Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
+ */
+
+#ifndef _ASM_S390_CHPID_H
+#define _ASM_S390_CHPID_H _ASM_S390_CHPID_H
+
+#include <linux/string.h>
+#include <asm/types.h>
+#include <asm/cio.h>
+
+#define __MAX_CHPID 255
+
+struct chp_id {
+        u8 reserved1;
+        u8 cssid;
+        u8 reserved2;
+        u8 id;
+} __attribute__((packed));
+
+static inline void chp_id_init(struct chp_id *chpid)
+{
+        memset(chpid, 0, sizeof(struct chp_id));
+}
+
+static inline int chp_id_is_equal(struct chp_id *a, struct chp_id *b)
+{
+        return (a->id == b->id) && (a->cssid == b->cssid);
+}
+
+static inline void chp_id_next(struct chp_id *chpid)
+{
+        if (chpid->id < __MAX_CHPID)
+                chpid->id++;
+        else {
+                chpid->id = 0;
+                chpid->cssid++;
+        }
+}
+
+static inline int chp_id_is_valid(struct chp_id *chpid)
+{
+        return (chpid->cssid <= __MAX_CSSID);
+}
+
+
+#define chp_id_for_each(c) \
+        for (chp_id_init(c); chp_id_is_valid(c); chp_id_next(c))
+
+#endif /* _ASM_S390_CHPID_H */
diff --git a/include/asm-s390/cio.h b/include/asm-s390/cio.h
index d92785030980..f738d2827582 100644
--- a/include/asm-s390/cio.h
+++ b/include/asm-s390/cio.h
@@ -13,6 +13,7 @@
 #ifdef __KERNEL__
 
 #define LPM_ANYPATH 0xff
+#define __MAX_CSSID 0
 
 /*
  * subchannel status word
@@ -292,6 +293,13 @@ extern void css_schedule_reprobe(void);
 
 extern void reipl_ccw_dev(struct ccw_dev_id *id);
 
+struct cio_iplinfo {
+        u16 devno;
+        int is_qdio;
+};
+
+extern int cio_get_iplinfo(struct cio_iplinfo *iplinfo);
+
 #endif
 
 #endif
diff --git a/include/asm-s390/ipl.h b/include/asm-s390/ipl.h
index 0eb64083480a..bdcd448d43fb 100644
--- a/include/asm-s390/ipl.h
+++ b/include/asm-s390/ipl.h
@@ -8,6 +8,8 @@
 #define _ASM_S390_IPL_H
 
 #include <asm/types.h>
+#include <asm/cio.h>
+#include <asm/setup.h>
 
 #define IPL_PARMBLOCK_ORIGIN    0x2000
 
@@ -74,12 +76,12 @@ struct ipl_parameter_block {
 } __attribute__((packed));
 
 /*
- * IPL validity flags and parameters as detected in head.S
+ * IPL validity flags
  */
 extern u32 ipl_flags;
-extern u16 ipl_devno;
 
 extern u32 dump_prefix_page;
+
 extern void do_reipl(void);
 extern void ipl_save_parameters(void);
 
@@ -89,6 +91,35 @@ enum {
         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_info(void);
+
 /*
  * DIAG 308 support
  */
diff --git a/include/asm-s390/lowcore.h b/include/asm-s390/lowcore.h
index 4a31d0a7ee83..ffc9788a21a7 100644
--- a/include/asm-s390/lowcore.h
+++ b/include/asm-s390/lowcore.h
@@ -147,6 +147,52 @@ void pgm_check_handler(void);
 void mcck_int_handler(void);
 void io_int_handler(void);
 
+struct save_area_s390 {
+        u32     ext_save;
+        u64     timer;
+        u64     clk_cmp;
+        u8      pad1[24];
+        u8      psw[8];
+        u32     pref_reg;
+        u8      pad2[20];
+        u32     acc_regs[16];
+        u64     fp_regs[4];
+        u32     gp_regs[16];
+        u32     ctrl_regs[16];
+}  __attribute__((packed));
+
+struct save_area_s390x {
+        u64     fp_regs[16];
+        u64     gp_regs[16];
+        u8      psw[16];
+        u8      pad1[8];
+        u32     pref_reg;
+        u32     fp_ctrl_reg;
+        u8      pad2[4];
+        u32     tod_reg;
+        u64     timer;
+        u64     clk_cmp;
+        u8      pad3[8];
+        u32     acc_regs[16];
+        u64     ctrl_regs[16];
+}  __attribute__((packed));
+
+union save_area {
+        struct save_area_s390   s390;
+        struct save_area_s390x  s390x;
+};
+
+#define SAVE_AREA_BASE_S390     0xd4
+#define SAVE_AREA_BASE_S390X    0x1200
+
+#ifndef __s390x__
+#define SAVE_AREA_SIZE sizeof(struct save_area_s390)
+#define SAVE_AREA_BASE SAVE_AREA_BASE_S390
+#else
+#define SAVE_AREA_SIZE sizeof(struct save_area_s390x)
+#define SAVE_AREA_BASE SAVE_AREA_BASE_S390X
+#endif
+
 struct _lowcore
 {
 #ifndef __s390x__
diff --git a/include/asm-s390/pgtable.h b/include/asm-s390/pgtable.h
index 13c16546eff5..8fe8d42e64c3 100644
--- a/include/asm-s390/pgtable.h
+++ b/include/asm-s390/pgtable.h
@@ -753,14 +753,14 @@ ptep_establish(struct vm_area_struct *vma,
  * should therefore only be called if it is not mapped in any
  * address space.
  */
-static inline int page_test_and_clear_dirty(struct page *page)
+static inline int page_test_dirty(struct page *page)
 {
-        unsigned long physpage = page_to_phys(page);
-        int skey = page_get_storage_key(physpage);
+        return (page_get_storage_key(page_to_phys(page)) & _PAGE_CHANGED) != 0;
+}
 
-        if (skey & _PAGE_CHANGED)
-                page_set_storage_key(physpage, skey & ~_PAGE_CHANGED);
-        return skey & _PAGE_CHANGED;
+static inline void page_clear_dirty(struct page *page)
+{
+        page_set_storage_key(page_to_phys(page), PAGE_DEFAULT_KEY);
 }
 
 /*
@@ -953,7 +953,8 @@ extern void memmap_init(unsigned long, int, unsigned long, unsigned long);
 #define __HAVE_ARCH_PTEP_CLEAR_FLUSH
 #define __HAVE_ARCH_PTEP_SET_WRPROTECT
 #define __HAVE_ARCH_PTE_SAME
-#define __HAVE_ARCH_PAGE_TEST_AND_CLEAR_DIRTY
+#define __HAVE_ARCH_PAGE_TEST_DIRTY
+#define __HAVE_ARCH_PAGE_CLEAR_DIRTY
 #define __HAVE_ARCH_PAGE_TEST_AND_CLEAR_YOUNG
 #include <asm-generic/pgtable.h>
 
diff --git a/include/asm-s390/processor.h b/include/asm-s390/processor.h
index 33b80ced4bc1..e0fcea8c64c3 100644
--- a/include/asm-s390/processor.h
+++ b/include/asm-s390/processor.h
@@ -57,6 +57,7 @@ struct cpuinfo_S390
 
 extern void s390_adjust_jiffies(void);
 extern void print_cpu_info(struct cpuinfo_S390 *);
+extern int get_cpu_capability(unsigned int *);
 
 /* Lazy FPU handling on uni-processor */
 extern struct task_struct *last_task_used_math;
@@ -196,6 +197,7 @@ extern unsigned long thread_saved_pc(struct task_struct *t);
 extern char *task_show_regs(struct task_struct *task, char *buffer);
 
 extern void show_registers(struct pt_regs *regs);
+extern void show_code(struct pt_regs *regs);
 extern void show_trace(struct task_struct *task, unsigned long *sp);
 
 unsigned long get_wchan(struct task_struct *p);
diff --git a/include/asm-s390/sclp.h b/include/asm-s390/sclp.h
index 468b97018405..21ed64773210 100644
--- a/include/asm-s390/sclp.h
+++ b/include/asm-s390/sclp.h
@@ -9,6 +9,7 @@
 #define _ASM_S390_SCLP_H
 
 #include <linux/types.h>
+#include <asm/chpid.h>
 
 struct sccb_header {
         u16     length;
@@ -33,7 +34,20 @@ struct sclp_readinfo_sccb {
         u8      _reserved3[4096 - 112]; /* 112-4095 */
 } __attribute__((packed, aligned(4096)));
 
+#define SCLP_CHP_INFO_MASK_SIZE         32
+
+struct sclp_chp_info {
+        u8 recognized[SCLP_CHP_INFO_MASK_SIZE];
+        u8 standby[SCLP_CHP_INFO_MASK_SIZE];
+        u8 configured[SCLP_CHP_INFO_MASK_SIZE];
+};
+
 extern struct sclp_readinfo_sccb s390_readinfo_sccb;
 extern void sclp_readinfo_early(void);
+extern int sclp_sdias_blk_count(void);
+extern int sclp_sdias_copy(void *dest, int blk_num, int nr_blks);
+extern int sclp_chp_configure(struct chp_id chpid);
+extern int sclp_chp_deconfigure(struct chp_id chpid);
+extern int sclp_chp_read_info(struct sclp_chp_info *info);
 
 #endif /* _ASM_S390_SCLP_H */
diff --git a/include/asm-s390/setup.h b/include/asm-s390/setup.h
index 44c7aee2bd34..a76a6b8fd887 100644
--- a/include/asm-s390/setup.h
+++ b/include/asm-s390/setup.h
@@ -40,6 +40,7 @@ struct mem_chunk {
 };
 
 extern struct mem_chunk memory_chunk[];
+extern unsigned long real_memory_size;
 
 #ifdef CONFIG_S390_SWITCH_AMODE
 extern unsigned int switch_amode;
@@ -77,6 +78,7 @@ extern unsigned long machine_flags;
 #endif /* __s390x__ */
 
 #define MACHINE_HAS_SCLP        (!MACHINE_IS_P390)
+#define ZFCPDUMP_HSA_SIZE       (32UL<<20)
 
 /*
  * Console mode. Override with conmode=
diff --git a/include/asm-s390/smp.h b/include/asm-s390/smp.h
index b957e4cda464..0a28e6d6ef40 100644
--- a/include/asm-s390/smp.h
+++ b/include/asm-s390/smp.h
@@ -54,9 +54,6 @@ extern int smp_call_function_on(void (*func) (void *info), void *info,
 
 #define raw_smp_processor_id()  (S390_lowcore.cpu_data.cpu_nr)
 
-extern int smp_get_cpu(cpumask_t cpu_map);
-extern void smp_put_cpu(int cpu);
-
 static inline __u16 hard_smp_processor_id(void)
 {
         __u16 cpu_address;
@@ -114,9 +111,8 @@ static inline void smp_send_stop(void)
 }
 
 #define smp_cpu_not_running(cpu)        1
-#define smp_get_cpu(cpu) ({ 0; })
-#define smp_put_cpu(cpu) ({ 0; })
 #define smp_setup_cpu_possible_map()    do { } while (0)
 #endif
 
+extern union save_area *zfcpdump_save_areas[NR_CPUS + 1];
 #endif