X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=qemu%2Finclude%2Fhw%2Ftimer%2Fa9gtimer.h;fp=qemu%2Finclude%2Fhw%2Ftimer%2Fa9gtimer.h;h=98d8e0ae53af2f75dc81d48eac6d6a919dca2717;hb=e44e3482bdb4d0ebde2d8b41830ac2cdb07948fb;hp=0000000000000000000000000000000000000000;hpb=9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00;p=kvmfornfv.git

diff --git a/qemu/include/hw/timer/a9gtimer.h b/qemu/include/hw/timer/a9gtimer.h
new file mode 100644
index 000000000..98d8e0ae5
--- /dev/null
+++ b/qemu/include/hw/timer/a9gtimer.h
@@ -0,0 +1,97 @@
+/*
+ * Global peripheral timer block for ARM A9MP
+ *
+ * (C) 2013 Xilinx Inc.
+ *
+ * Written by François LEGAL
+ * Written by Peter Crosthwaite <peter.crosthwaite@xilinx.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef HW_TIMER_A9_GTIMER_H_H
+#define HW_TIMER_A9_GTIMER_H_H
+
+#include "hw/sysbus.h"
+
+#define A9_GTIMER_MAX_CPUS 4
+
+#define TYPE_A9_GTIMER "arm.cortex-a9-global-timer"
+#define A9_GTIMER(obj) OBJECT_CHECK(A9GTimerState, (obj), TYPE_A9_GTIMER)
+
+#define R_COUNTER_LO                0x00
+#define R_COUNTER_HI                0x04
+
+#define R_CONTROL                   0x08
+#define R_CONTROL_TIMER_ENABLE      (1 << 0)
+#define R_CONTROL_COMP_ENABLE       (1 << 1)
+#define R_CONTROL_IRQ_ENABLE        (1 << 2)
+#define R_CONTROL_AUTO_INCREMENT    (1 << 3)
+#define R_CONTROL_PRESCALER_SHIFT   8
+#define R_CONTROL_PRESCALER_LEN     8
+#define R_CONTROL_PRESCALER_MASK    (((1 << R_CONTROL_PRESCALER_LEN) - 1) << \
+                                     R_CONTROL_PRESCALER_SHIFT)
+
+#define R_CONTROL_BANKED            (R_CONTROL_COMP_ENABLE | \
+                                     R_CONTROL_IRQ_ENABLE | \
+                                     R_CONTROL_AUTO_INCREMENT)
+#define R_CONTROL_NEEDS_SYNC        (R_CONTROL_TIMER_ENABLE | \
+                                     R_CONTROL_PRESCALER_MASK)
+
+#define R_INTERRUPT_STATUS          0x0C
+#define R_COMPARATOR_LO             0x10
+#define R_COMPARATOR_HI             0x14
+#define R_AUTO_INCREMENT            0x18
+
+typedef struct A9GTimerPerCPU A9GTimerPerCPU;
+typedef struct A9GTimerState A9GTimerState;
+
+struct A9GTimerPerCPU {
+    A9GTimerState *parent;
+
+    uint32_t control; /* only per cpu banked bits valid */
+    uint64_t compare;
+    uint32_t status;
+    uint32_t inc;
+
+    MemoryRegion iomem;
+    qemu_irq irq; /* PPI interrupts */
+};
+
+struct A9GTimerState {
+    /*< private >*/
+    SysBusDevice parent_obj;
+    /*< public >*/
+
+    MemoryRegion iomem;
+    /* static props */
+    uint32_t num_cpu;
+
+    QEMUTimer *timer;
+
+    uint64_t counter; /* current timer value */
+
+    uint64_t ref_counter;
+    uint64_t cpu_ref_time; /* the cpu time as of last update of ref_counter */
+    uint32_t control; /* only non per cpu banked bits valid */
+
+    A9GTimerPerCPU per_cpu[A9_GTIMER_MAX_CPUS];
+};
+
+typedef struct A9GTimerUpdate {
+    uint64_t now;
+    uint64_t new;
+} A9GTimerUpdate;
+
+#endif /* #ifdef HW_TIMER_A9_GTIMER_H_H */