Add qemu 2.4.0

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

1 files changed, 649 insertions, 0 deletions

diff --git a/qemu/hw/usb/dev-serial.c b/qemu/hw/usb/dev-serial.c
new file mode 100644
index 000000000..a6a66008e
--- /dev/null
+++ b/qemu/hw/usb/dev-serial.c
@@ -0,0 +1,649 @@
+/*
+ * FTDI FT232BM Device emulation
+ *
+ * Copyright (c) 2006 CodeSourcery.
+ * Copyright (c) 2008 Samuel Thibault <samuel.thibault@ens-lyon.org>
+ * Written by Paul Brook, reused for FTDI by Samuel Thibault
+ *
+ * This code is licensed under the LGPL.
+ */
+
+#include "qemu-common.h"
+#include "qemu/error-report.h"
+#include "hw/usb.h"
+#include "hw/usb/desc.h"
+#include "sysemu/char.h"
+
+//#define DEBUG_Serial
+
+#ifdef DEBUG_Serial
+#define DPRINTF(fmt, ...) \
+do { printf("usb-serial: " fmt , ## __VA_ARGS__); } while (0)
+#else
+#define DPRINTF(fmt, ...) do {} while(0)
+#endif
+
+#define RECV_BUF 384
+
+/* Commands */
+#define FTDI_RESET		0
+#define FTDI_SET_MDM_CTRL	1
+#define FTDI_SET_FLOW_CTRL	2
+#define FTDI_SET_BAUD		3
+#define FTDI_SET_DATA		4
+#define FTDI_GET_MDM_ST		5
+#define FTDI_SET_EVENT_CHR	6
+#define FTDI_SET_ERROR_CHR	7
+#define FTDI_SET_LATENCY	9
+#define FTDI_GET_LATENCY	10
+
+#define DeviceOutVendor	((USB_DIR_OUT|USB_TYPE_VENDOR|USB_RECIP_DEVICE)<<8)
+#define DeviceInVendor	((USB_DIR_IN |USB_TYPE_VENDOR|USB_RECIP_DEVICE)<<8)
+
+/* RESET */
+
+#define FTDI_RESET_SIO	0
+#define FTDI_RESET_RX	1
+#define FTDI_RESET_TX	2
+
+/* SET_MDM_CTRL */
+
+#define FTDI_DTR	1
+#define FTDI_SET_DTR	(FTDI_DTR << 8)
+#define FTDI_RTS	2
+#define FTDI_SET_RTS	(FTDI_RTS << 8)
+
+/* SET_FLOW_CTRL */
+
+#define FTDI_RTS_CTS_HS		1
+#define FTDI_DTR_DSR_HS		2
+#define FTDI_XON_XOFF_HS	4
+
+/* SET_DATA */
+
+#define FTDI_PARITY	(0x7 << 8)
+#define FTDI_ODD	(0x1 << 8)
+#define FTDI_EVEN	(0x2 << 8)
+#define FTDI_MARK	(0x3 << 8)
+#define FTDI_SPACE	(0x4 << 8)
+
+#define FTDI_STOP	(0x3 << 11)
+#define FTDI_STOP1	(0x0 << 11)
+#define FTDI_STOP15	(0x1 << 11)
+#define FTDI_STOP2	(0x2 << 11)
+
+/* GET_MDM_ST */
+/* TODO: should be sent every 40ms */
+#define FTDI_CTS  (1<<4)        // CTS line status
+#define FTDI_DSR  (1<<5)        // DSR line status
+#define FTDI_RI   (1<<6)        // RI line status
+#define FTDI_RLSD (1<<7)        // Receive Line Signal Detect
+
+/* Status */
+
+#define FTDI_DR   (1<<0)        // Data Ready
+#define FTDI_OE   (1<<1)        // Overrun Err
+#define FTDI_PE   (1<<2)        // Parity Err
+#define FTDI_FE   (1<<3)        // Framing Err
+#define FTDI_BI   (1<<4)        // Break Interrupt
+#define FTDI_THRE (1<<5)        // Transmitter Holding Register
+#define FTDI_TEMT (1<<6)        // Transmitter Empty
+#define FTDI_FIFO (1<<7)        // Error in FIFO
+
+typedef struct {
+    USBDevice dev;
+    uint8_t recv_buf[RECV_BUF];
+    uint16_t recv_ptr;
+    uint16_t recv_used;
+    uint8_t event_chr;
+    uint8_t error_chr;
+    uint8_t event_trigger;
+    QEMUSerialSetParams params;
+    int latency;        /* ms */
+    CharDriverState *cs;
+} USBSerialState;
+
+#define TYPE_USB_SERIAL "usb-serial-dev"
+#define USB_SERIAL_DEV(obj) OBJECT_CHECK(USBSerialState, (obj), TYPE_USB_SERIAL)
+
+enum {
+    STR_MANUFACTURER = 1,
+    STR_PRODUCT_SERIAL,
+    STR_PRODUCT_BRAILLE,
+    STR_SERIALNUMBER,
+};
+
+static const USBDescStrings desc_strings = {
+    [STR_MANUFACTURER]    = "QEMU",
+    [STR_PRODUCT_SERIAL]  = "QEMU USB SERIAL",
+    [STR_PRODUCT_BRAILLE] = "QEMU USB BAUM BRAILLE",
+    [STR_SERIALNUMBER]    = "1",
+};
+
+static const USBDescIface desc_iface0 = {
+    .bInterfaceNumber              = 0,
+    .bNumEndpoints                 = 2,
+    .bInterfaceClass               = 0xff,
+    .bInterfaceSubClass            = 0xff,
+    .bInterfaceProtocol            = 0xff,
+    .eps = (USBDescEndpoint[]) {
+        {
+            .bEndpointAddress      = USB_DIR_IN | 0x01,
+            .bmAttributes          = USB_ENDPOINT_XFER_BULK,
+            .wMaxPacketSize        = 64,
+        },{
+            .bEndpointAddress      = USB_DIR_OUT | 0x02,
+            .bmAttributes          = USB_ENDPOINT_XFER_BULK,
+            .wMaxPacketSize        = 64,
+        },
+    }
+};
+
+static const USBDescDevice desc_device = {
+    .bcdUSB                        = 0x0200,
+    .bMaxPacketSize0               = 8,
+    .bNumConfigurations            = 1,
+    .confs = (USBDescConfig[]) {
+        {
+            .bNumInterfaces        = 1,
+            .bConfigurationValue   = 1,
+            .bmAttributes          = USB_CFG_ATT_ONE,
+            .bMaxPower             = 50,
+            .nif = 1,
+            .ifs = &desc_iface0,
+        },
+    },
+};
+
+static const USBDesc desc_serial = {
+    .id = {
+        .idVendor          = 0x0403,
+        .idProduct         = 0x6001,
+        .bcdDevice         = 0x0400,
+        .iManufacturer     = STR_MANUFACTURER,
+        .iProduct          = STR_PRODUCT_SERIAL,
+        .iSerialNumber     = STR_SERIALNUMBER,
+    },
+    .full = &desc_device,
+    .str  = desc_strings,
+};
+
+static const USBDesc desc_braille = {
+    .id = {
+        .idVendor          = 0x0403,
+        .idProduct         = 0xfe72,
+        .bcdDevice         = 0x0400,
+        .iManufacturer     = STR_MANUFACTURER,
+        .iProduct          = STR_PRODUCT_BRAILLE,
+        .iSerialNumber     = STR_SERIALNUMBER,
+    },
+    .full = &desc_device,
+    .str  = desc_strings,
+};
+
+static void usb_serial_reset(USBSerialState *s)
+{
+    /* TODO: Set flow control to none */
+    s->event_chr = 0x0d;
+    s->event_trigger = 0;
+    s->recv_ptr = 0;
+    s->recv_used = 0;
+    /* TODO: purge in char driver */
+}
+
+static void usb_serial_handle_reset(USBDevice *dev)
+{
+    USBSerialState *s = (USBSerialState *)dev;
+
+    DPRINTF("Reset\n");
+
+    usb_serial_reset(s);
+    /* TODO: Reset char device, send BREAK? */
+}
+
+static uint8_t usb_get_modem_lines(USBSerialState *s)
+{
+    int flags;
+    uint8_t ret;
+
+    if (qemu_chr_fe_ioctl(s->cs, CHR_IOCTL_SERIAL_GET_TIOCM, &flags) == -ENOTSUP)
+        return FTDI_CTS|FTDI_DSR|FTDI_RLSD;
+
+    ret = 0;
+    if (flags & CHR_TIOCM_CTS)
+        ret |= FTDI_CTS;
+    if (flags & CHR_TIOCM_DSR)
+        ret |= FTDI_DSR;
+    if (flags & CHR_TIOCM_RI)
+        ret |= FTDI_RI;
+    if (flags & CHR_TIOCM_CAR)
+        ret |= FTDI_RLSD;
+
+    return ret;
+}
+
+static void usb_serial_handle_control(USBDevice *dev, USBPacket *p,
+               int request, int value, int index, int length, uint8_t *data)
+{
+    USBSerialState *s = (USBSerialState *)dev;
+    int ret;
+
+    DPRINTF("got control %x, value %x\n",request, value);
+    ret = usb_desc_handle_control(dev, p, request, value, index, length, data);
+    if (ret >= 0) {
+        return;
+    }
+
+    switch (request) {
+    case EndpointOutRequest | USB_REQ_CLEAR_FEATURE:
+        break;
+
+        /* Class specific requests.  */
+    case DeviceOutVendor | FTDI_RESET:
+        switch (value) {
+        case FTDI_RESET_SIO:
+            usb_serial_reset(s);
+            break;
+        case FTDI_RESET_RX:
+            s->recv_ptr = 0;
+            s->recv_used = 0;
+            /* TODO: purge from char device */
+            break;
+        case FTDI_RESET_TX:
+            /* TODO: purge from char device */
+            break;
+        }
+        break;
+    case DeviceOutVendor | FTDI_SET_MDM_CTRL:
+    {
+        static int flags;
+        qemu_chr_fe_ioctl(s->cs,CHR_IOCTL_SERIAL_GET_TIOCM, &flags);
+        if (value & FTDI_SET_RTS) {
+            if (value & FTDI_RTS)
+                flags |= CHR_TIOCM_RTS;
+            else
+                flags &= ~CHR_TIOCM_RTS;
+        }
+        if (value & FTDI_SET_DTR) {
+            if (value & FTDI_DTR)
+                flags |= CHR_TIOCM_DTR;
+            else
+                flags &= ~CHR_TIOCM_DTR;
+        }
+        qemu_chr_fe_ioctl(s->cs,CHR_IOCTL_SERIAL_SET_TIOCM, &flags);
+        break;
+    }
+    case DeviceOutVendor | FTDI_SET_FLOW_CTRL:
+        /* TODO: ioctl */
+        break;
+    case DeviceOutVendor | FTDI_SET_BAUD: {
+        static const int subdivisors8[8] = { 0, 4, 2, 1, 3, 5, 6, 7 };
+        int subdivisor8 = subdivisors8[((value & 0xc000) >> 14)
+                                     | ((index & 1) << 2)];
+        int divisor = value & 0x3fff;
+
+        /* chip special cases */
+        if (divisor == 1 && subdivisor8 == 0)
+            subdivisor8 = 4;
+        if (divisor == 0 && subdivisor8 == 0)
+            divisor = 1;
+
+        s->params.speed = (48000000 / 2) / (8 * divisor + subdivisor8);
+        qemu_chr_fe_ioctl(s->cs, CHR_IOCTL_SERIAL_SET_PARAMS, &s->params);
+        break;
+    }
+    case DeviceOutVendor | FTDI_SET_DATA:
+        switch (value & FTDI_PARITY) {
+            case 0:
+                s->params.parity = 'N';
+                break;
+            case FTDI_ODD:
+                s->params.parity = 'O';
+                break;
+            case FTDI_EVEN:
+                s->params.parity = 'E';
+                break;
+            default:
+                DPRINTF("unsupported parity %d\n", value & FTDI_PARITY);
+                goto fail;
+        }
+        switch (value & FTDI_STOP) {
+            case FTDI_STOP1:
+                s->params.stop_bits = 1;
+                break;
+            case FTDI_STOP2:
+                s->params.stop_bits = 2;
+                break;
+            default:
+                DPRINTF("unsupported stop bits %d\n", value & FTDI_STOP);
+                goto fail;
+        }
+        qemu_chr_fe_ioctl(s->cs, CHR_IOCTL_SERIAL_SET_PARAMS, &s->params);
+        /* TODO: TX ON/OFF */
+        break;
+    case DeviceInVendor | FTDI_GET_MDM_ST:
+        data[0] = usb_get_modem_lines(s) | 1;
+        data[1] = 0;
+        p->actual_length = 2;
+        break;
+    case DeviceOutVendor | FTDI_SET_EVENT_CHR:
+        /* TODO: handle it */
+        s->event_chr = value;
+        break;
+    case DeviceOutVendor | FTDI_SET_ERROR_CHR:
+        /* TODO: handle it */
+        s->error_chr = value;
+        break;
+    case DeviceOutVendor | FTDI_SET_LATENCY:
+        s->latency = value;
+        break;
+    case DeviceInVendor | FTDI_GET_LATENCY:
+        data[0] = s->latency;
+        p->actual_length = 1;
+        break;
+    default:
+    fail:
+        DPRINTF("got unsupported/bogus control %x, value %x\n", request, value);
+        p->status = USB_RET_STALL;
+        break;
+    }
+}
+
+static void usb_serial_handle_data(USBDevice *dev, USBPacket *p)
+{
+    USBSerialState *s = (USBSerialState *)dev;
+    uint8_t devep = p->ep->nr;
+    struct iovec *iov;
+    uint8_t header[2];
+    int i, first_len, len;
+
+    switch (p->pid) {
+    case USB_TOKEN_OUT:
+        if (devep != 2)
+            goto fail;
+        for (i = 0; i < p->iov.niov; i++) {
+            iov = p->iov.iov + i;
+            qemu_chr_fe_write(s->cs, iov->iov_base, iov->iov_len);
+        }
+        p->actual_length = p->iov.size;
+        break;
+
+    case USB_TOKEN_IN:
+        if (devep != 1)
+            goto fail;
+        first_len = RECV_BUF - s->recv_ptr;
+        len = p->iov.size;
+        if (len <= 2) {
+            p->status = USB_RET_NAK;
+            break;
+        }
+        header[0] = usb_get_modem_lines(s) | 1;
+        /* We do not have the uart details */
+        /* handle serial break */
+        if (s->event_trigger && s->event_trigger & FTDI_BI) {
+            s->event_trigger &= ~FTDI_BI;
+            header[1] = FTDI_BI;
+            usb_packet_copy(p, header, 2);
+            break;
+        } else {
+            header[1] = 0;
+        }
+        len -= 2;
+        if (len > s->recv_used)
+            len = s->recv_used;
+        if (!len) {
+            p->status = USB_RET_NAK;
+            break;
+        }
+        if (first_len > len)
+            first_len = len;
+        usb_packet_copy(p, header, 2);
+        usb_packet_copy(p, s->recv_buf + s->recv_ptr, first_len);
+        if (len > first_len)
+            usb_packet_copy(p, s->recv_buf, len - first_len);
+        s->recv_used -= len;
+        s->recv_ptr = (s->recv_ptr + len) % RECV_BUF;
+        break;
+
+    default:
+        DPRINTF("Bad token\n");
+    fail:
+        p->status = USB_RET_STALL;
+        break;
+    }
+}
+
+static int usb_serial_can_read(void *opaque)
+{
+    USBSerialState *s = opaque;
+
+    if (!s->dev.attached) {
+        return 0;
+    }
+    return RECV_BUF - s->recv_used;
+}
+
+static void usb_serial_read(void *opaque, const uint8_t *buf, int size)
+{
+    USBSerialState *s = opaque;
+    int first_size, start;
+
+    /* room in the buffer? */
+    if (size > (RECV_BUF - s->recv_used))
+        size = RECV_BUF - s->recv_used;
+
+    start = s->recv_ptr + s->recv_used;
+    if (start < RECV_BUF) {
+        /* copy data to end of buffer */
+        first_size = RECV_BUF - start;
+        if (first_size > size)
+            first_size = size;
+
+        memcpy(s->recv_buf + start, buf, first_size);
+
+        /* wrap around to front if needed */
+        if (size > first_size)
+            memcpy(s->recv_buf, buf + first_size, size - first_size);
+    } else {
+        start -= RECV_BUF;
+        memcpy(s->recv_buf + start, buf, size);
+    }
+    s->recv_used += size;
+}
+
+static void usb_serial_event(void *opaque, int event)
+{
+    USBSerialState *s = opaque;
+
+    switch (event) {
+        case CHR_EVENT_BREAK:
+            s->event_trigger |= FTDI_BI;
+            break;
+        case CHR_EVENT_FOCUS:
+            break;
+        case CHR_EVENT_OPENED:
+            if (!s->dev.attached) {
+                usb_device_attach(&s->dev, &error_abort);
+            }
+            break;
+        case CHR_EVENT_CLOSED:
+            if (s->dev.attached) {
+                usb_device_detach(&s->dev);
+            }
+            break;
+    }
+}
+
+static void usb_serial_realize(USBDevice *dev, Error **errp)
+{
+    USBSerialState *s = USB_SERIAL_DEV(dev);
+    Error *local_err = NULL;
+
+    usb_desc_create_serial(dev);
+    usb_desc_init(dev);
+    dev->auto_attach = 0;
+
+    if (!s->cs) {
+        error_setg(errp, "Property chardev is required");
+        return;
+    }
+
+    usb_check_attach(dev, &local_err);
+    if (local_err) {
+        error_propagate(errp, local_err);
+        return;
+    }
+
+    qemu_chr_add_handlers(s->cs, usb_serial_can_read, usb_serial_read,
+                          usb_serial_event, s);
+    usb_serial_handle_reset(dev);
+
+    if (s->cs->be_open && !dev->attached) {
+        usb_device_attach(dev, &error_abort);
+    }
+}
+
+static USBDevice *usb_serial_init(USBBus *bus, const char *filename)
+{
+    USBDevice *dev;
+    CharDriverState *cdrv;
+    uint32_t vendorid = 0, productid = 0;
+    char label[32];
+    static int index;
+
+    while (*filename && *filename != ':') {
+        const char *p;
+        char *e;
+        if (strstart(filename, "vendorid=", &p)) {
+            vendorid = strtol(p, &e, 16);
+            if (e == p || (*e && *e != ',' && *e != ':')) {
+                error_report("bogus vendor ID %s", p);
+                return NULL;
+            }
+            filename = e;
+        } else if (strstart(filename, "productid=", &p)) {
+            productid = strtol(p, &e, 16);
+            if (e == p || (*e && *e != ',' && *e != ':')) {
+                error_report("bogus product ID %s", p);
+                return NULL;
+            }
+            filename = e;
+        } else {
+            error_report("unrecognized serial USB option %s", filename);
+            return NULL;
+        }
+        while(*filename == ',')
+            filename++;
+    }
+    if (!*filename) {
+        error_report("character device specification needed");
+        return NULL;
+    }
+    filename++;
+
+    snprintf(label, sizeof(label), "usbserial%d", index++);
+    cdrv = qemu_chr_new(label, filename, NULL);
+    if (!cdrv)
+        return NULL;
+
+    dev = usb_create(bus, "usb-serial");
+    qdev_prop_set_chr(&dev->qdev, "chardev", cdrv);
+    if (vendorid)
+        qdev_prop_set_uint16(&dev->qdev, "vendorid", vendorid);
+    if (productid)
+        qdev_prop_set_uint16(&dev->qdev, "productid", productid);
+    return dev;
+}
+
+static USBDevice *usb_braille_init(USBBus *bus, const char *unused)
+{
+    USBDevice *dev;
+    CharDriverState *cdrv;
+
+    cdrv = qemu_chr_new("braille", "braille", NULL);
+    if (!cdrv)
+        return NULL;
+
+    dev = usb_create(bus, "usb-braille");
+    qdev_prop_set_chr(&dev->qdev, "chardev", cdrv);
+    return dev;
+}
+
+static const VMStateDescription vmstate_usb_serial = {
+    .name = "usb-serial",
+    .unmigratable = 1,
+};
+
+static Property serial_properties[] = {
+    DEFINE_PROP_CHR("chardev", USBSerialState, cs),
+    DEFINE_PROP_END_OF_LIST(),
+};
+
+static void usb_serial_dev_class_init(ObjectClass *klass, void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(klass);
+    USBDeviceClass *uc = USB_DEVICE_CLASS(klass);
+
+    uc->realize        = usb_serial_realize;
+    uc->handle_reset   = usb_serial_handle_reset;
+    uc->handle_control = usb_serial_handle_control;
+    uc->handle_data    = usb_serial_handle_data;
+    dc->vmsd = &vmstate_usb_serial;
+    set_bit(DEVICE_CATEGORY_INPUT, dc->categories);
+}
+
+static const TypeInfo usb_serial_dev_type_info = {
+    .name = TYPE_USB_SERIAL,
+    .parent = TYPE_USB_DEVICE,
+    .instance_size = sizeof(USBSerialState),
+    .abstract = true,
+    .class_init = usb_serial_dev_class_init,
+};
+
+static void usb_serial_class_initfn(ObjectClass *klass, void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(klass);
+    USBDeviceClass *uc = USB_DEVICE_CLASS(klass);
+
+    uc->product_desc   = "QEMU USB Serial";
+    uc->usb_desc       = &desc_serial;
+    dc->props = serial_properties;
+}
+
+static const TypeInfo serial_info = {
+    .name          = "usb-serial",
+    .parent        = TYPE_USB_SERIAL,
+    .class_init    = usb_serial_class_initfn,
+};
+
+static Property braille_properties[] = {
+    DEFINE_PROP_CHR("chardev", USBSerialState, cs),
+    DEFINE_PROP_END_OF_LIST(),
+};
+
+static void usb_braille_class_initfn(ObjectClass *klass, void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(klass);
+    USBDeviceClass *uc = USB_DEVICE_CLASS(klass);
+
+    uc->product_desc   = "QEMU USB Braille";
+    uc->usb_desc       = &desc_braille;
+    dc->props = braille_properties;
+}
+
+static const TypeInfo braille_info = {
+    .name          = "usb-braille",
+    .parent        = TYPE_USB_SERIAL,
+    .class_init    = usb_braille_class_initfn,
+};
+
+static void usb_serial_register_types(void)
+{
+    type_register_static(&usb_serial_dev_type_info);
+    type_register_static(&serial_info);
+    usb_legacy_register("usb-serial", "serial", usb_serial_init);
+    type_register_static(&braille_info);
+    usb_legacy_register("usb-braille", "braille", usb_braille_init);
+}
+
+type_init(usb_serial_register_types)