Add qemu 2.4.0

Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5
Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>

1 files changed, 317 insertions, 0 deletions

diff --git a/qemu/hw/input/milkymist-softusb.c b/qemu/hw/input/milkymist-softusb.c
new file mode 100644
index 000000000..7b0f4db88
--- /dev/null
+++ b/qemu/hw/input/milkymist-softusb.c
@@ -0,0 +1,317 @@
+/*
+ *  QEMU model of the Milkymist SoftUSB block.
+ *
+ *  Copyright (c) 2010 Michael Walle <michael@walle.cc>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ *
+ *
+ * Specification available at:
+ *   not available yet
+ */
+
+#include "hw/hw.h"
+#include "hw/sysbus.h"
+#include "trace.h"
+#include "ui/console.h"
+#include "hw/input/hid.h"
+#include "qemu/error-report.h"
+
+enum {
+    R_CTRL = 0,
+    R_MAX
+};
+
+enum {
+    CTRL_RESET = (1<<0),
+};
+
+#define COMLOC_DEBUG_PRODUCE 0x1000
+#define COMLOC_DEBUG_BASE    0x1001
+#define COMLOC_MEVT_PRODUCE  0x1101
+#define COMLOC_MEVT_BASE     0x1102
+#define COMLOC_KEVT_PRODUCE  0x1142
+#define COMLOC_KEVT_BASE     0x1143
+
+#define TYPE_MILKYMIST_SOFTUSB "milkymist-softusb"
+#define MILKYMIST_SOFTUSB(obj) \
+    OBJECT_CHECK(MilkymistSoftUsbState, (obj), TYPE_MILKYMIST_SOFTUSB)
+
+struct MilkymistSoftUsbState {
+    SysBusDevice parent_obj;
+
+    HIDState hid_kbd;
+    HIDState hid_mouse;
+
+    MemoryRegion regs_region;
+    MemoryRegion pmem;
+    MemoryRegion dmem;
+    qemu_irq irq;
+
+    void *pmem_ptr;
+    void *dmem_ptr;
+
+    /* device properties */
+    uint32_t pmem_size;
+    uint32_t dmem_size;
+
+    /* device registers */
+    uint32_t regs[R_MAX];
+
+    /* mouse state */
+    uint8_t mouse_hid_buffer[4];
+
+    /* keyboard state */
+    uint8_t kbd_hid_buffer[8];
+};
+typedef struct MilkymistSoftUsbState MilkymistSoftUsbState;
+
+static uint64_t softusb_read(void *opaque, hwaddr addr,
+                             unsigned size)
+{
+    MilkymistSoftUsbState *s = opaque;
+    uint32_t r = 0;
+
+    addr >>= 2;
+    switch (addr) {
+    case R_CTRL:
+        r = s->regs[addr];
+        break;
+
+    default:
+        error_report("milkymist_softusb: read access to unknown register 0x"
+                TARGET_FMT_plx, addr << 2);
+        break;
+    }
+
+    trace_milkymist_softusb_memory_read(addr << 2, r);
+
+    return r;
+}
+
+static void
+softusb_write(void *opaque, hwaddr addr, uint64_t value,
+              unsigned size)
+{
+    MilkymistSoftUsbState *s = opaque;
+
+    trace_milkymist_softusb_memory_write(addr, value);
+
+    addr >>= 2;
+    switch (addr) {
+    case R_CTRL:
+        s->regs[addr] = value;
+        break;
+
+    default:
+        error_report("milkymist_softusb: write access to unknown register 0x"
+                TARGET_FMT_plx, addr << 2);
+        break;
+    }
+}
+
+static const MemoryRegionOps softusb_mmio_ops = {
+    .read = softusb_read,
+    .write = softusb_write,
+    .endianness = DEVICE_NATIVE_ENDIAN,
+    .valid = {
+        .min_access_size = 4,
+        .max_access_size = 4,
+    },
+};
+
+static inline void softusb_read_dmem(MilkymistSoftUsbState *s,
+        uint32_t offset, uint8_t *buf, uint32_t len)
+{
+    if (offset + len >= s->dmem_size) {
+        error_report("milkymist_softusb: read dmem out of bounds "
+                "at offset 0x%x, len %d", offset, len);
+        memset(buf, 0, len);
+        return;
+    }
+
+    memcpy(buf, s->dmem_ptr + offset, len);
+}
+
+static inline void softusb_write_dmem(MilkymistSoftUsbState *s,
+        uint32_t offset, uint8_t *buf, uint32_t len)
+{
+    if (offset + len >= s->dmem_size) {
+        error_report("milkymist_softusb: write dmem out of bounds "
+                "at offset 0x%x, len %d", offset, len);
+        return;
+    }
+
+    memcpy(s->dmem_ptr + offset, buf, len);
+}
+
+static void softusb_mouse_changed(MilkymistSoftUsbState *s)
+{
+    uint8_t m;
+
+    softusb_read_dmem(s, COMLOC_MEVT_PRODUCE, &m, 1);
+    trace_milkymist_softusb_mevt(m);
+    softusb_write_dmem(s, COMLOC_MEVT_BASE + 4 * m, s->mouse_hid_buffer, 4);
+    m = (m + 1) & 0xf;
+    softusb_write_dmem(s, COMLOC_MEVT_PRODUCE, &m, 1);
+
+    trace_milkymist_softusb_pulse_irq();
+    qemu_irq_pulse(s->irq);
+}
+
+static void softusb_kbd_changed(MilkymistSoftUsbState *s)
+{
+    uint8_t m;
+
+    softusb_read_dmem(s, COMLOC_KEVT_PRODUCE, &m, 1);
+    trace_milkymist_softusb_kevt(m);
+    softusb_write_dmem(s, COMLOC_KEVT_BASE + 8 * m, s->kbd_hid_buffer, 8);
+    m = (m + 1) & 0x7;
+    softusb_write_dmem(s, COMLOC_KEVT_PRODUCE, &m, 1);
+
+    trace_milkymist_softusb_pulse_irq();
+    qemu_irq_pulse(s->irq);
+}
+
+static void softusb_kbd_hid_datain(HIDState *hs)
+{
+    MilkymistSoftUsbState *s = container_of(hs, MilkymistSoftUsbState, hid_kbd);
+    int len;
+
+    /* if device is in reset, do nothing */
+    if (s->regs[R_CTRL] & CTRL_RESET) {
+        return;
+    }
+
+    while (hid_has_events(hs)) {
+        len = hid_keyboard_poll(hs, s->kbd_hid_buffer,
+                sizeof(s->kbd_hid_buffer));
+
+        if (len == 8) {
+            softusb_kbd_changed(s);
+        }
+    }
+}
+
+static void softusb_mouse_hid_datain(HIDState *hs)
+{
+    MilkymistSoftUsbState *s =
+            container_of(hs, MilkymistSoftUsbState, hid_mouse);
+    int len;
+
+    /* if device is in reset, do nothing */
+    if (s->regs[R_CTRL] & CTRL_RESET) {
+        return;
+    }
+
+    while (hid_has_events(hs)) {
+        len = hid_pointer_poll(hs, s->mouse_hid_buffer,
+                sizeof(s->mouse_hid_buffer));
+
+        if (len == 4) {
+            softusb_mouse_changed(s);
+        }
+    }
+}
+
+static void milkymist_softusb_reset(DeviceState *d)
+{
+    MilkymistSoftUsbState *s = MILKYMIST_SOFTUSB(d);
+    int i;
+
+    for (i = 0; i < R_MAX; i++) {
+        s->regs[i] = 0;
+    }
+    memset(s->kbd_hid_buffer, 0, sizeof(s->kbd_hid_buffer));
+    memset(s->mouse_hid_buffer, 0, sizeof(s->mouse_hid_buffer));
+
+    hid_reset(&s->hid_kbd);
+    hid_reset(&s->hid_mouse);
+
+    /* defaults */
+    s->regs[R_CTRL] = CTRL_RESET;
+}
+
+static int milkymist_softusb_init(SysBusDevice *dev)
+{
+    MilkymistSoftUsbState *s = MILKYMIST_SOFTUSB(dev);
+
+    sysbus_init_irq(dev, &s->irq);
+
+    memory_region_init_io(&s->regs_region, OBJECT(s), &softusb_mmio_ops, s,
+                          "milkymist-softusb", R_MAX * 4);
+    sysbus_init_mmio(dev, &s->regs_region);
+
+    /* register pmem and dmem */
+    memory_region_init_ram(&s->pmem, OBJECT(s), "milkymist-softusb.pmem",
+                           s->pmem_size, &error_abort);
+    vmstate_register_ram_global(&s->pmem);
+    s->pmem_ptr = memory_region_get_ram_ptr(&s->pmem);
+    sysbus_init_mmio(dev, &s->pmem);
+    memory_region_init_ram(&s->dmem, OBJECT(s), "milkymist-softusb.dmem",
+                           s->dmem_size, &error_abort);
+    vmstate_register_ram_global(&s->dmem);
+    s->dmem_ptr = memory_region_get_ram_ptr(&s->dmem);
+    sysbus_init_mmio(dev, &s->dmem);
+
+    hid_init(&s->hid_kbd, HID_KEYBOARD, softusb_kbd_hid_datain);
+    hid_init(&s->hid_mouse, HID_MOUSE, softusb_mouse_hid_datain);
+
+    return 0;
+}
+
+static const VMStateDescription vmstate_milkymist_softusb = {
+    .name = "milkymist-softusb",
+    .version_id = 1,
+    .minimum_version_id = 1,
+    .fields = (VMStateField[]) {
+        VMSTATE_UINT32_ARRAY(regs, MilkymistSoftUsbState, R_MAX),
+        VMSTATE_HID_KEYBOARD_DEVICE(hid_kbd, MilkymistSoftUsbState),
+        VMSTATE_HID_POINTER_DEVICE(hid_mouse, MilkymistSoftUsbState),
+        VMSTATE_BUFFER(kbd_hid_buffer, MilkymistSoftUsbState),
+        VMSTATE_BUFFER(mouse_hid_buffer, MilkymistSoftUsbState),
+        VMSTATE_END_OF_LIST()
+    }
+};
+
+static Property milkymist_softusb_properties[] = {
+    DEFINE_PROP_UINT32("pmem_size", MilkymistSoftUsbState, pmem_size, 0x00001000),
+    DEFINE_PROP_UINT32("dmem_size", MilkymistSoftUsbState, dmem_size, 0x00002000),
+    DEFINE_PROP_END_OF_LIST(),
+};
+
+static void milkymist_softusb_class_init(ObjectClass *klass, void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(klass);
+    SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
+
+    k->init = milkymist_softusb_init;
+    dc->reset = milkymist_softusb_reset;
+    dc->vmsd = &vmstate_milkymist_softusb;
+    dc->props = milkymist_softusb_properties;
+}
+
+static const TypeInfo milkymist_softusb_info = {
+    .name          = TYPE_MILKYMIST_SOFTUSB,
+    .parent        = TYPE_SYS_BUS_DEVICE,
+    .instance_size = sizeof(MilkymistSoftUsbState),
+    .class_init    = milkymist_softusb_class_init,
+};
+
+static void milkymist_softusb_register_types(void)
+{
+    type_register_static(&milkymist_softusb_info);
+}
+
+type_init(milkymist_softusb_register_types)