Add qemu 2.4.0

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

1 files changed, 220 insertions, 0 deletions

diff --git a/qemu/roms/seabios/src/hw/usb-msc.c b/qemu/roms/seabios/src/hw/usb-msc.c
new file mode 100644
index 000000000..d90319f51
--- /dev/null
+++ b/qemu/roms/seabios/src/hw/usb-msc.c
@@ -0,0 +1,220 @@
+// Code for handling USB Mass Storage Controller devices.
+//
+// Copyright (C) 2010  Kevin O'Connor <kevin@koconnor.net>
+//
+// This file may be distributed under the terms of the GNU LGPLv3 license.
+
+#include "biosvar.h" // GET_GLOBALFLAT
+#include "block.h" // DTYPE_USB
+#include "blockcmd.h" // cdb_read
+#include "config.h" // CONFIG_USB_MSC
+#include "malloc.h" // free
+#include "output.h" // dprintf
+#include "std/disk.h" // DISK_RET_SUCCESS
+#include "string.h" // memset
+#include "usb.h" // struct usb_s
+#include "usb-msc.h" // usb_msc_setup
+#include "util.h" // bootprio_find_usb
+
+struct usbdrive_s {
+    struct drive_s drive;
+    struct usb_pipe *bulkin, *bulkout;
+    int lun;
+};
+
+
+/****************************************************************
+ * Bulk-only drive command processing
+ ****************************************************************/
+
+#define USB_CDB_SIZE 12
+
+#define CBW_SIGNATURE 0x43425355 // USBC
+
+struct cbw_s {
+    u32 dCBWSignature;
+    u32 dCBWTag;
+    u32 dCBWDataTransferLength;
+    u8 bmCBWFlags;
+    u8 bCBWLUN;
+    u8 bCBWCBLength;
+    u8 CBWCB[16];
+} PACKED;
+
+#define CSW_SIGNATURE 0x53425355 // USBS
+
+struct csw_s {
+    u32 dCSWSignature;
+    u32 dCSWTag;
+    u32 dCSWDataResidue;
+    u8 bCSWStatus;
+} PACKED;
+
+static int
+usb_msc_send(struct usbdrive_s *udrive_gf, int dir, void *buf, u32 bytes)
+{
+    struct usb_pipe *pipe;
+    if (dir == USB_DIR_OUT)
+        pipe = GET_GLOBALFLAT(udrive_gf->bulkout);
+    else
+        pipe = GET_GLOBALFLAT(udrive_gf->bulkin);
+    return usb_send_bulk(pipe, dir, buf, bytes);
+}
+
+// Low-level usb command transmit function.
+int
+usb_cmd_data(struct disk_op_s *op, void *cdbcmd, u16 blocksize)
+{
+    if (!CONFIG_USB_MSC)
+        return 0;
+
+    dprintf(16, "usb_cmd_data id=%p write=%d count=%d bs=%d buf=%p\n"
+            , op->drive_gf, 0, op->count, blocksize, op->buf_fl);
+    struct usbdrive_s *udrive_gf = container_of(
+        op->drive_gf, struct usbdrive_s, drive);
+
+    // Setup command block wrapper.
+    u32 bytes = blocksize * op->count;
+    struct cbw_s cbw;
+    memset(&cbw, 0, sizeof(cbw));
+    memcpy(cbw.CBWCB, cdbcmd, USB_CDB_SIZE);
+    cbw.dCBWSignature = CBW_SIGNATURE;
+    cbw.dCBWTag = 999; // XXX
+    cbw.dCBWDataTransferLength = bytes;
+    cbw.bmCBWFlags = cdb_is_read(cdbcmd, blocksize) ? USB_DIR_IN : USB_DIR_OUT;
+    cbw.bCBWLUN = GET_GLOBALFLAT(udrive_gf->lun);
+    cbw.bCBWCBLength = USB_CDB_SIZE;
+
+    // Transfer cbw to device.
+    int ret = usb_msc_send(udrive_gf, USB_DIR_OUT
+                           , MAKE_FLATPTR(GET_SEG(SS), &cbw), sizeof(cbw));
+    if (ret)
+        goto fail;
+
+    // Transfer data to/from device.
+    if (bytes) {
+        ret = usb_msc_send(udrive_gf, cbw.bmCBWFlags, op->buf_fl, bytes);
+        if (ret)
+            goto fail;
+    }
+
+    // Transfer csw info.
+    struct csw_s csw;
+    ret = usb_msc_send(udrive_gf, USB_DIR_IN
+                       , MAKE_FLATPTR(GET_SEG(SS), &csw), sizeof(csw));
+    if (ret)
+        goto fail;
+
+    if (!csw.bCSWStatus)
+        return DISK_RET_SUCCESS;
+    if (csw.bCSWStatus == 2)
+        goto fail;
+
+    if (blocksize)
+        op->count -= csw.dCSWDataResidue / blocksize;
+    return DISK_RET_EBADTRACK;
+
+fail:
+    // XXX - reset connection
+    dprintf(1, "USB transmission failed\n");
+    return DISK_RET_EBADTRACK;
+}
+
+static int
+usb_msc_maxlun(struct usb_pipe *pipe)
+{
+    struct usb_ctrlrequest req;
+    req.bRequestType = USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE;
+    req.bRequest = 0xfe;
+    req.wValue = 0;
+    req.wIndex = 0;
+    req.wLength = 1;
+    unsigned char maxlun;
+    int ret = usb_send_default_control(pipe, &req, &maxlun);
+    if (ret)
+        return 0;
+    return maxlun;
+}
+
+static int
+usb_msc_lun_setup(struct usb_pipe *inpipe, struct usb_pipe *outpipe,
+                  struct usbdevice_s *usbdev, int lun)
+{
+    // Allocate drive structure.
+    struct usbdrive_s *drive = malloc_fseg(sizeof(*drive));
+    if (!drive) {
+        warn_noalloc();
+        return -1;
+    }
+    memset(drive, 0, sizeof(*drive));
+    if (usb_32bit_pipe(inpipe))
+        drive->drive.type = DTYPE_USB_32;
+    else
+        drive->drive.type = DTYPE_USB;
+    drive->bulkin = inpipe;
+    drive->bulkout = outpipe;
+    drive->lun = lun;
+
+    int prio = bootprio_find_usb(usbdev, lun);
+    int ret = scsi_drive_setup(&drive->drive, "USB MSC", prio);
+    if (ret) {
+        dprintf(1, "Unable to configure USB MSC drive.\n");
+        free(drive);
+        return -1;
+    }
+    return 0;
+}
+
+/****************************************************************
+ * Setup
+ ****************************************************************/
+
+// Configure a usb msc device.
+int
+usb_msc_setup(struct usbdevice_s *usbdev)
+{
+    if (!CONFIG_USB_MSC)
+        return -1;
+
+    // Verify right kind of device
+    struct usb_interface_descriptor *iface = usbdev->iface;
+    if ((iface->bInterfaceSubClass != US_SC_SCSI &&
+         iface->bInterfaceSubClass != US_SC_ATAPI_8070 &&
+         iface->bInterfaceSubClass != US_SC_ATAPI_8020)
+        || iface->bInterfaceProtocol != US_PR_BULK) {
+        dprintf(1, "Unsupported MSC USB device (subclass=%02x proto=%02x)\n"
+                , iface->bInterfaceSubClass, iface->bInterfaceProtocol);
+        return -1;
+    }
+
+    // Find bulk in and bulk out endpoints.
+    struct usb_pipe *inpipe = NULL, *outpipe = NULL;
+    struct usb_endpoint_descriptor *indesc = usb_find_desc(
+        usbdev, USB_ENDPOINT_XFER_BULK, USB_DIR_IN);
+    struct usb_endpoint_descriptor *outdesc = usb_find_desc(
+        usbdev, USB_ENDPOINT_XFER_BULK, USB_DIR_OUT);
+    if (!indesc || !outdesc)
+        goto fail;
+    inpipe = usb_alloc_pipe(usbdev, indesc);
+    outpipe = usb_alloc_pipe(usbdev, outdesc);
+    if (!inpipe || !outpipe)
+        goto fail;
+
+    int maxlun = usb_msc_maxlun(usbdev->defpipe);
+    int lun, pipesused = 0;
+    for (lun = 0; lun < maxlun + 1; lun++) {
+        int ret = usb_msc_lun_setup(inpipe, outpipe, usbdev, lun);
+        if (!ret)
+            pipesused = 1;
+    }
+
+    if (!pipesused)
+        goto fail;
+
+    return 0;
+fail:
+    dprintf(1, "Unable to configure USB MSC device.\n");
+    usb_free_pipe(usbdev, inpipe);
+    usb_free_pipe(usbdev, outpipe);
+    return -1;
+}