Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / include / linux / hpet.h

diff --git a/kernel/include/linux/hpet.h b/kernel/include/linux/hpet.h
new file mode 100644 (file)
index 0000000..9427ab4
--- /dev/null
+++ b/kernel/include/linux/hpet.h
@@ -0,0 +1,110 @@
+#ifndef        __HPET__
+#define        __HPET__ 1
+
+#include <uapi/linux/hpet.h>
+
+
+/*
+ * Offsets into HPET Registers
+ */
+
+struct hpet {
+       u64 hpet_cap;           /* capabilities */
+       u64 res0;               /* reserved */
+       u64 hpet_config;        /* configuration */
+       u64 res1;               /* reserved */
+       u64 hpet_isr;           /* interrupt status reg */
+       u64 res2[25];           /* reserved */
+       union {                 /* main counter */
+               u64 _hpet_mc64;
+               u32 _hpet_mc32;
+               unsigned long _hpet_mc;
+       } _u0;
+       u64 res3;               /* reserved */
+       struct hpet_timer {
+               u64 hpet_config;        /* configuration/cap */
+               union {         /* timer compare register */
+                       u64 _hpet_hc64;
+                       u32 _hpet_hc32;
+                       unsigned long _hpet_compare;
+               } _u1;
+               u64 hpet_fsb[2];        /* FSB route */
+       } hpet_timers[1];
+};
+
+#define        hpet_mc         _u0._hpet_mc
+#define        hpet_compare    _u1._hpet_compare
+
+#define        HPET_MAX_TIMERS (32)
+#define        HPET_MAX_IRQ    (32)
+
+/*
+ * HPET general capabilities register
+ */
+
+#define        HPET_COUNTER_CLK_PERIOD_MASK    (0xffffffff00000000ULL)
+#define        HPET_COUNTER_CLK_PERIOD_SHIFT   (32UL)
+#define        HPET_VENDOR_ID_MASK             (0x00000000ffff0000ULL)
+#define        HPET_VENDOR_ID_SHIFT            (16ULL)
+#define        HPET_LEG_RT_CAP_MASK            (0x8000)
+#define        HPET_COUNTER_SIZE_MASK          (0x2000)
+#define        HPET_NUM_TIM_CAP_MASK           (0x1f00)
+#define        HPET_NUM_TIM_CAP_SHIFT          (8ULL)
+
+/*
+ * HPET general configuration register
+ */
+
+#define        HPET_LEG_RT_CNF_MASK            (2UL)
+#define        HPET_ENABLE_CNF_MASK            (1UL)
+
+
+/*
+ * Timer configuration register
+ */
+
+#define        Tn_INT_ROUTE_CAP_MASK           (0xffffffff00000000ULL)
+#define        Tn_INT_ROUTE_CAP_SHIFT          (32UL)
+#define        Tn_FSB_INT_DELCAP_MASK          (0x8000UL)
+#define        Tn_FSB_INT_DELCAP_SHIFT         (15)
+#define        Tn_FSB_EN_CNF_MASK              (0x4000UL)
+#define        Tn_FSB_EN_CNF_SHIFT             (14)
+#define        Tn_INT_ROUTE_CNF_MASK           (0x3e00UL)
+#define        Tn_INT_ROUTE_CNF_SHIFT          (9)
+#define        Tn_32MODE_CNF_MASK              (0x0100UL)
+#define        Tn_VAL_SET_CNF_MASK             (0x0040UL)
+#define        Tn_SIZE_CAP_MASK                (0x0020UL)
+#define        Tn_PER_INT_CAP_MASK             (0x0010UL)
+#define        Tn_TYPE_CNF_MASK                (0x0008UL)
+#define        Tn_INT_ENB_CNF_MASK             (0x0004UL)
+#define        Tn_INT_TYPE_CNF_MASK            (0x0002UL)
+
+/*
+ * Timer FSB Interrupt Route Register
+ */
+
+#define        Tn_FSB_INT_ADDR_MASK            (0xffffffff00000000ULL)
+#define        Tn_FSB_INT_ADDR_SHIFT           (32UL)
+#define        Tn_FSB_INT_VAL_MASK             (0x00000000ffffffffULL)
+
+/*
+ * exported interfaces
+ */
+
+struct hpet_data {
+       unsigned long hd_phys_address;
+       void __iomem *hd_address;
+       unsigned short hd_nirqs;
+       unsigned int hd_state;  /* timer allocated */
+       unsigned int hd_irq[HPET_MAX_TIMERS];
+};
+
+static inline void hpet_reserve_timer(struct hpet_data *hd, int timer)
+{
+       hd->hd_state |= (1 << timer);
+       return;
+}
+
+int hpet_alloc(struct hpet_data *);
+
+#endif                         /* !__HPET__ */