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-rw-r--r--arch/s390/include/asm/dma.h6
-rw-r--r--arch/s390/include/asm/io.h5
-rw-r--r--arch/s390/include/asm/irq.h78
-rw-r--r--arch/s390/include/asm/pgtable.h5
-rw-r--r--arch/s390/include/asm/timex.h28
-rw-r--r--arch/s390/include/uapi/asm/unistd.h3
6 files changed, 90 insertions, 35 deletions
diff --git a/arch/s390/include/asm/dma.h b/arch/s390/include/asm/dma.h
index de015d85e3e5..bb9bdcd20864 100644
--- a/arch/s390/include/asm/dma.h
+++ b/arch/s390/include/asm/dma.h
@@ -10,4 +10,10 @@
*/
#define MAX_DMA_ADDRESS 0x80000000
+#ifdef CONFIG_PCI
+extern int isa_dma_bridge_buggy;
+#else
+#define isa_dma_bridge_buggy (0)
+#endif
+
#endif /* _ASM_S390_DMA_H */
diff --git a/arch/s390/include/asm/io.h b/arch/s390/include/asm/io.h
index 16c3eb164f4f..27cb32185ce1 100644
--- a/arch/s390/include/asm/io.h
+++ b/arch/s390/include/asm/io.h
@@ -85,6 +85,11 @@ static inline void iounmap(volatile void __iomem *addr)
#define __raw_writel zpci_write_u32
#define __raw_writeq zpci_write_u64
+#define readb_relaxed readb
+#define readw_relaxed readw
+#define readl_relaxed readl
+#define readq_relaxed readq
+
#endif /* CONFIG_PCI */
#include <asm-generic/io.h>
diff --git a/arch/s390/include/asm/irq.h b/arch/s390/include/asm/irq.h
index e6972f85d2b0..7def77302d63 100644
--- a/arch/s390/include/asm/irq.h
+++ b/arch/s390/include/asm/irq.h
@@ -2,43 +2,61 @@
#define _ASM_IRQ_H
#include <linux/hardirq.h>
+#include <linux/percpu.h>
+#include <linux/cache.h>
#include <linux/types.h>
-enum interruption_class {
+enum interruption_main_class {
EXTERNAL_INTERRUPT,
IO_INTERRUPT,
- EXTINT_CLK,
- EXTINT_EXC,
- EXTINT_EMS,
- EXTINT_TMR,
- EXTINT_TLA,
- EXTINT_PFL,
- EXTINT_DSD,
- EXTINT_VRT,
- EXTINT_SCP,
- EXTINT_IUC,
- EXTINT_CMS,
- EXTINT_CMC,
- EXTINT_CMR,
- IOINT_CIO,
- IOINT_QAI,
- IOINT_DAS,
- IOINT_C15,
- IOINT_C70,
- IOINT_TAP,
- IOINT_VMR,
- IOINT_LCS,
- IOINT_CLW,
- IOINT_CTC,
- IOINT_APB,
- IOINT_ADM,
- IOINT_CSC,
- IOINT_PCI,
- IOINT_MSI,
+ NR_IRQS
+};
+
+enum interruption_class {
+ IRQEXT_CLK,
+ IRQEXT_EXC,
+ IRQEXT_EMS,
+ IRQEXT_TMR,
+ IRQEXT_TLA,
+ IRQEXT_PFL,
+ IRQEXT_DSD,
+ IRQEXT_VRT,
+ IRQEXT_SCP,
+ IRQEXT_IUC,
+ IRQEXT_CMS,
+ IRQEXT_CMC,
+ IRQEXT_CMR,
+ IRQIO_CIO,
+ IRQIO_QAI,
+ IRQIO_DAS,
+ IRQIO_C15,
+ IRQIO_C70,
+ IRQIO_TAP,
+ IRQIO_VMR,
+ IRQIO_LCS,
+ IRQIO_CLW,
+ IRQIO_CTC,
+ IRQIO_APB,
+ IRQIO_ADM,
+ IRQIO_CSC,
+ IRQIO_PCI,
+ IRQIO_MSI,
NMI_NMI,
- NR_IRQS,
+ CPU_RST,
+ NR_ARCH_IRQS
};
+struct irq_stat {
+ unsigned int irqs[NR_ARCH_IRQS];
+};
+
+DECLARE_PER_CPU_SHARED_ALIGNED(struct irq_stat, irq_stat);
+
+static __always_inline void inc_irq_stat(enum interruption_class irq)
+{
+ __get_cpu_var(irq_stat).irqs[irq]++;
+}
+
struct ext_code {
unsigned short subcode;
unsigned short code;
diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h
index c928dc1938f2..c1d7930a82f4 100644
--- a/arch/s390/include/asm/pgtable.h
+++ b/arch/s390/include/asm/pgtable.h
@@ -1387,10 +1387,7 @@ static inline int has_transparent_hugepage(void)
static inline unsigned long pmd_pfn(pmd_t pmd)
{
- if (pmd_trans_huge(pmd))
- return pmd_val(pmd) >> HPAGE_SHIFT;
- else
- return pmd_val(pmd) >> PAGE_SHIFT;
+ return pmd_val(pmd) >> PAGE_SHIFT;
}
#endif /* CONFIG_TRANSPARENT_HUGEPAGE */
diff --git a/arch/s390/include/asm/timex.h b/arch/s390/include/asm/timex.h
index fba4d66788a2..4c060bb5b8ea 100644
--- a/arch/s390/include/asm/timex.h
+++ b/arch/s390/include/asm/timex.h
@@ -128,4 +128,32 @@ static inline unsigned long long get_clock_monotonic(void)
return get_clock_xt() - sched_clock_base_cc;
}
+/**
+ * tod_to_ns - convert a TOD format value to nanoseconds
+ * @todval: to be converted TOD format value
+ * Returns: number of nanoseconds that correspond to the TOD format value
+ *
+ * Converting a 64 Bit TOD format value to nanoseconds means that the value
+ * must be divided by 4.096. In order to achieve that we multiply with 125
+ * and divide by 512:
+ *
+ * ns = (todval * 125) >> 9;
+ *
+ * In order to avoid an overflow with the multiplication we can rewrite this.
+ * With a split todval == 2^32 * th + tl (th upper 32 bits, tl lower 32 bits)
+ * we end up with
+ *
+ * ns = ((2^32 * th + tl) * 125 ) >> 9;
+ * -> ns = (2^23 * th * 125) + ((tl * 125) >> 9);
+ *
+ */
+static inline unsigned long long tod_to_ns(unsigned long long todval)
+{
+ unsigned long long ns;
+
+ ns = ((todval >> 32) << 23) * 125;
+ ns += ((todval & 0xffffffff) * 125) >> 9;
+ return ns;
+}
+
#endif
diff --git a/arch/s390/include/uapi/asm/unistd.h b/arch/s390/include/uapi/asm/unistd.h
index 63e6078699f1..864f693c237f 100644
--- a/arch/s390/include/uapi/asm/unistd.h
+++ b/arch/s390/include/uapi/asm/unistd.h
@@ -279,7 +279,8 @@
#define __NR_process_vm_writev 341
#define __NR_s390_runtime_instr 342
#define __NR_kcmp 343
-#define NR_syscalls 344
+#define __NR_finit_module 344
+#define NR_syscalls 345
/*
* There are some system calls that are not present on 64 bit, some