diff options
Diffstat (limited to 'qemu/roms/seabios/src/hw/usb-msc.c')
| -rw-r--r-- | qemu/roms/seabios/src/hw/usb-msc.c | 222 |
1 files changed, 0 insertions, 222 deletions
diff --git a/qemu/roms/seabios/src/hw/usb-msc.c b/qemu/roms/seabios/src/hw/usb-msc.c deleted file mode 100644 index a234f13be..000000000 --- a/qemu/roms/seabios/src/hw/usb-msc.c +++ /dev/null @@ -1,222 +0,0 @@ -// 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_process_op(struct disk_op_s *op) -{ - if (!CONFIG_USB_MSC) - return 0; - - dprintf(16, "usb_cmd_data id=%p write=%d count=%d buf=%p\n" - , op->drive_gf, 0, op->count, op->buf_fl); - struct usbdrive_s *udrive_gf = container_of( - op->drive_gf, struct usbdrive_s, drive); - - // Setup command block wrapper. - struct cbw_s cbw; - memset(&cbw, 0, sizeof(cbw)); - int blocksize = scsi_fill_cmd(op, cbw.CBWCB, USB_CDB_SIZE); - if (blocksize < 0) - return default_process_op(op); - u32 bytes = blocksize * op->count; - cbw.dCBWSignature = CBW_SIGNATURE; - cbw.dCBWTag = 999; // XXX - cbw.dCBWDataTransferLength = bytes; - cbw.bmCBWFlags = scsi_is_read(op) ? 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; -} |