CBI support.
* include/grub/usb.h (grub_usbms_protocol_t): New values GRUB_USBMS_PROTOCOL_CB and GRUB_USBMS_PROTOCOL_CBI. * grub-core/disk/usbms.c (GRUB_USBMS_CBI_CMD_SIZE): New define. (GRUB_USBMS_CBI_ADSC_REQ): Likewise. (grub_usbms_dev): Add subclass, protocol and intrpt. Remove in_maxsz and out_maxsz. (grub_usbms_reset): Rename to ... (grub_usbms_bo_reset): .. this. (grub_usbms_cbi_cmd): New function. (grub_usbms_cbi_reset): Likewise. (grub_usbms_reset): Likewise. (grub_usbms_attach): Recognize cbi. Same subclass and protocol. (grub_usbms_transfer): Rename to ... (grub_usbms_transfer_bo): ... this. (grub_usbms_transfer_cbi): Likewise. (grub_usbms_transfer): Likewise.
This commit is contained in:
Aleš Nesrsta
Vladimir 'phcoder' Serbinenko
commit
fc9b5652f6
21
ChangeLog
21
ChangeLog
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@ -1,3 +1,24 @@
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2012-02-01 Aleš Nesrsta <starous@volny.cz>
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CBI support.
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* include/grub/usb.h (grub_usbms_protocol_t): New values
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GRUB_USBMS_PROTOCOL_CB and GRUB_USBMS_PROTOCOL_CBI.
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* grub-core/disk/usbms.c (GRUB_USBMS_CBI_CMD_SIZE): New define.
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(GRUB_USBMS_CBI_ADSC_REQ): Likewise.
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(grub_usbms_dev): Add subclass, protocol and intrpt.
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Remove in_maxsz and out_maxsz.
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(grub_usbms_reset): Rename to ...
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(grub_usbms_bo_reset): .. this.
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(grub_usbms_cbi_cmd): New function.
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(grub_usbms_cbi_reset): Likewise.
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(grub_usbms_reset): Likewise.
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(grub_usbms_attach): Recognize cbi. Same subclass and protocol.
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(grub_usbms_transfer): Rename to ...
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(grub_usbms_transfer_bo): ... this.
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(grub_usbms_transfer_cbi): Likewise.
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(grub_usbms_transfer): Likewise.
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2012-02-01 Aleš Nesrsta <starous@volny.cz>
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2012-02-01 Vladimir Serbinenko <phcoder@gmail.com>
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@ -28,6 +28,12 @@ GRUB_MOD_LICENSE ("GPLv3+");
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#define GRUB_USBMS_DIRECTION_BIT 7
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/* Length of CBI command should be always 12 bytes */
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#define GRUB_USBMS_CBI_CMD_SIZE 12
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/* CBI class-specific USB request ADSC - it sends CBI (scsi) command to
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* device in DATA stage */
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#define GRUB_USBMS_CBI_ADSC_REQ 0x00
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/* The USB Mass Storage Command Block Wrapper. */
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struct grub_usbms_cbw
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{
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@ -59,8 +65,9 @@ struct grub_usbms_dev
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struct grub_usb_desc_endp *in;
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struct grub_usb_desc_endp *out;
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int in_maxsz;
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int out_maxsz;
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int subclass;
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int protocol;
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struct grub_usb_desc_endp *intrpt;
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};
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typedef struct grub_usbms_dev *grub_usbms_dev_t;
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@ -70,7 +77,39 @@ static grub_usbms_dev_t grub_usbms_devices[MAX_USBMS_DEVICES];
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static int first_available_slot = 0;
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static grub_err_t
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grub_usbms_reset (grub_usb_device_t dev, int interface)
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grub_usbms_cbi_cmd (grub_usb_device_t dev, int interface,
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grub_uint8_t *cbicb)
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{
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return grub_usb_control_msg (dev,
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GRUB_USB_REQTYPE_CLASS_INTERFACE_OUT,
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GRUB_USBMS_CBI_ADSC_REQ, 0, interface,
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GRUB_USBMS_CBI_CMD_SIZE, (char*)cbicb);
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}
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static grub_err_t
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grub_usbms_cbi_reset (grub_usb_device_t dev, int interface)
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{
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/* Prepare array with Command Block Reset (=CBR) */
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/* CBI specific communication reset command should be send to device
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* via CBI USB class specific request ADCS */
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struct grub_cbi_reset
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{
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grub_uint8_t opcode; /* 0x1d = SEND DIAGNOSTIC */
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grub_uint8_t lun; /* 7-5 LUN, 4-0 flags - for CBR always = 0x04 */
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grub_uint8_t pad[10];
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/* XXX: There is collision between CBI and UFI specifications:
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* CBI says 0xff, UFI says 0x00 ... probably it does
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* not matter ... (?) */
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} cbicb = { 0x1d, 0x04,
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{ 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff }
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};
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return grub_usbms_cbi_cmd (dev, interface, (grub_uint8_t *)&cbicb);
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}
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static grub_err_t
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grub_usbms_bo_reset (grub_usb_device_t dev, int interface)
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{
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grub_usb_err_t u;
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u = grub_usb_control_msg (dev, 0x21, 255, 0, interface, 0, 0);
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@ -79,6 +118,15 @@ grub_usbms_reset (grub_usb_device_t dev, int interface)
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return GRUB_ERR_NONE;
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}
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static grub_err_t
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grub_usbms_reset (grub_usbms_dev_t dev)
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{
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if (dev->protocol == GRUB_USBMS_PROTOCOL_BULK)
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return grub_usbms_bo_reset (dev->dev, dev->interface);
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else
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return grub_usbms_cbi_reset (dev->dev, dev->interface);
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}
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static void
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grub_usbms_detach (grub_usb_device_t usbdev, int config, int interface)
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{
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@ -101,7 +149,7 @@ grub_usbms_attach (grub_usb_device_t usbdev, int configno, int interfno)
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int j;
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grub_uint8_t luns = 0;
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unsigned curnum;
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grub_usb_err_t err;
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grub_usb_err_t err = GRUB_ERR_NONE;
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if (first_available_slot == ARRAY_SIZE (grub_usbms_devices))
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return 0;
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@ -117,7 +165,9 @@ grub_usbms_attach (grub_usb_device_t usbdev, int configno, int interfno)
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&& interf->subclass != GRUB_USBMS_SUBCLASS_MMC2
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&& interf->subclass != GRUB_USBMS_SUBCLASS_UFI
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&& interf->subclass != GRUB_USBMS_SUBCLASS_SFF8070 )
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|| interf->protocol != GRUB_USBMS_PROTOCOL_BULK)
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|| (interf->protocol != GRUB_USBMS_PROTOCOL_BULK
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&& interf->protocol != GRUB_USBMS_PROTOCOL_CBI
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&& interf->protocol != GRUB_USBMS_PROTOCOL_CB))
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return 0;
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grub_usbms_devices[curnum] = grub_zalloc (sizeof (struct grub_usbms_dev));
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@ -126,6 +176,8 @@ grub_usbms_attach (grub_usb_device_t usbdev, int configno, int interfno)
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grub_usbms_devices[curnum]->dev = usbdev;
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grub_usbms_devices[curnum]->interface = interfno;
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grub_usbms_devices[curnum]->subclass = interf->subclass;
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grub_usbms_devices[curnum]->protocol = interf->protocol;
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grub_dprintf ("usbms", "alive\n");
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@ -137,24 +189,19 @@ grub_usbms_attach (grub_usb_device_t usbdev, int configno, int interfno)
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endp = &usbdev->config[0].interf[interfno].descendp[j];
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if ((endp->endp_addr & 128) && (endp->attrib & 3) == 2)
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{
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/* Bulk IN endpoint. */
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grub_usbms_devices[curnum]->in = endp;
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/* Clear Halt is not possible yet! */
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/* grub_usb_clear_halt (usbdev, endp->endp_addr); */
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grub_usbms_devices[curnum]->in_maxsz = endp->maxpacket;
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}
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/* Bulk IN endpoint. */
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grub_usbms_devices[curnum]->in = endp;
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else if (!(endp->endp_addr & 128) && (endp->attrib & 3) == 2)
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{
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/* Bulk OUT endpoint. */
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grub_usbms_devices[curnum]->out = endp;
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/* Clear Halt is not possible yet! */
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/* grub_usb_clear_halt (usbdev, endp->endp_addr); */
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grub_usbms_devices[curnum]->out_maxsz = endp->maxpacket;
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}
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/* Bulk OUT endpoint. */
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grub_usbms_devices[curnum]->out = endp;
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else if ((endp->endp_addr & 128) && (endp->attrib & 3) == 3)
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/* Interrupt (IN) endpoint. */
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grub_usbms_devices[curnum]->intrpt = endp;
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}
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if (!grub_usbms_devices[curnum]->in || !grub_usbms_devices[curnum]->out)
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if (!grub_usbms_devices[curnum]->in || !grub_usbms_devices[curnum]->out
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|| ((grub_usbms_devices[curnum]->protocol == GRUB_USBMS_PROTOCOL_CBI)
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&& !grub_usbms_devices[curnum]->intrpt))
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{
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grub_free (grub_usbms_devices[curnum]);
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grub_usbms_devices[curnum] = 0;
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@ -167,27 +214,34 @@ grub_usbms_attach (grub_usb_device_t usbdev, int configno, int interfno)
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grub_usb_set_configuration (usbdev, 1);
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/* Query the amount of LUNs. */
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err = grub_usb_control_msg (usbdev, 0xA1, 254, 0, interfno, 1, (char *) &luns);
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if (err)
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{
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/* In case of a stall, clear the stall. */
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if (err == GRUB_USB_ERR_STALL)
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{
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grub_usb_clear_halt (usbdev, grub_usbms_devices[curnum]->in->endp_addr);
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grub_usb_clear_halt (usbdev, grub_usbms_devices[curnum]->out->endp_addr);
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}
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/* Just set the amount of LUNs to one. */
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grub_errno = GRUB_ERR_NONE;
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grub_usbms_devices[curnum]->luns = 1;
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if (grub_usbms_devices[curnum]->protocol == GRUB_USBMS_PROTOCOL_BULK)
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{ /* Only Bulk only devices support Get Max LUN command */
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err = grub_usb_control_msg (usbdev, 0xA1, 254, 0, interfno, 1, (char *) &luns);
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if (err)
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{
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/* In case of a stall, clear the stall. */
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if (err == GRUB_USB_ERR_STALL)
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{
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grub_usb_clear_halt (usbdev, grub_usbms_devices[curnum]->in->endp_addr);
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grub_usb_clear_halt (usbdev, grub_usbms_devices[curnum]->out->endp_addr);
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}
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/* Just set the amount of LUNs to one. */
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grub_errno = GRUB_ERR_NONE;
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grub_usbms_devices[curnum]->luns = 1;
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}
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else
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/* luns = 0 means one LUN with ID 0 present ! */
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/* We get from device not number of LUNs but highest
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* LUN number. LUNs are numbered from 0,
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* i.e. number of LUNs is luns+1 ! */
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grub_usbms_devices[curnum]->luns = luns + 1;
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}
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else
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/* luns = 0 means one LUN with ID 0 present ! */
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/* We get from device not number of LUNs but highest
|
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* LUN number. LUNs are numbered from 0,
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* i.e. number of LUNs is luns+1 ! */
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grub_usbms_devices[curnum]->luns = luns + 1;
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|
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/* XXX: Does CBI devices support multiple LUNs ?
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* I.e., should we detect number of device's LUNs ? (How?) */
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grub_usbms_devices[curnum]->luns = 1;
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grub_dprintf ("usbms", "alive\n");
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usbdev->config[configno].interf[interfno].detach_hook = grub_usbms_detach;
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|
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@ -232,8 +286,8 @@ grub_usbms_iterate (int NESTED_FUNC_ATTR (*hook) (int id, int bus, int luns),
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}
|
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|
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static grub_err_t
|
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grub_usbms_transfer (struct grub_scsi *scsi, grub_size_t cmdsize, char *cmd,
|
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grub_size_t size, char *buf, int read_write)
|
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grub_usbms_transfer_bo (struct grub_scsi *scsi, grub_size_t cmdsize, char *cmd,
|
||||
grub_size_t size, char *buf, int read_write)
|
||||
{
|
||||
struct grub_usbms_cbw cbw;
|
||||
grub_usbms_dev_t dev = (grub_usbms_dev_t) scsi->data;
|
||||
|
|
@ -242,7 +296,7 @@ grub_usbms_transfer (struct grub_scsi *scsi, grub_size_t cmdsize, char *cmd,
|
|||
grub_usb_err_t err = GRUB_USB_ERR_NONE;
|
||||
grub_usb_err_t errCSW = GRUB_USB_ERR_NONE;
|
||||
int retrycnt = 3 + 1;
|
||||
|
||||
|
||||
retry:
|
||||
retrycnt--;
|
||||
if (retrycnt == 0)
|
||||
|
|
@ -343,7 +397,7 @@ CheckCSW:
|
|||
if (errCSW)
|
||||
{ /* Bulk-only reset device. */
|
||||
grub_dprintf ("usb", "Bulk-only reset device - errCSW\n");
|
||||
grub_usbms_reset (dev->dev, dev->interface);
|
||||
grub_usbms_reset (dev);
|
||||
grub_usb_clear_halt (dev->dev, dev->in->endp_addr);
|
||||
grub_usb_clear_halt (dev->dev, dev->out->endp_addr);
|
||||
goto retry;
|
||||
|
|
@ -360,7 +414,7 @@ CheckCSW:
|
|||
(status.signature != grub_cpu_to_le32(0x53425355)))
|
||||
{ /* Bulk-only reset device. */
|
||||
grub_dprintf ("usb", "Bulk-only reset device - bad status\n");
|
||||
grub_usbms_reset (dev->dev, dev->interface);
|
||||
grub_usbms_reset (dev);
|
||||
grub_usb_clear_halt (dev->dev, dev->in->endp_addr);
|
||||
grub_usb_clear_halt (dev->dev, dev->out->endp_addr);
|
||||
|
||||
|
|
@ -378,6 +432,158 @@ CheckCSW:
|
|||
return GRUB_ERR_NONE;
|
||||
}
|
||||
|
||||
static grub_err_t
|
||||
grub_usbms_transfer_cbi (struct grub_scsi *scsi, grub_size_t cmdsize, char *cmd,
|
||||
grub_size_t size, char *buf, int read_write)
|
||||
{
|
||||
grub_usbms_dev_t dev = (grub_usbms_dev_t) scsi->data;
|
||||
int retrycnt = 3 + 1;
|
||||
grub_usb_err_t err = GRUB_USB_ERR_NONE;
|
||||
grub_uint8_t cbicb[GRUB_USBMS_CBI_CMD_SIZE];
|
||||
grub_uint16_t status;
|
||||
|
||||
retry:
|
||||
retrycnt--;
|
||||
if (retrycnt == 0)
|
||||
return grub_error (GRUB_ERR_IO, "USB Mass Storage CBI failed");
|
||||
|
||||
/* Setup the request. */
|
||||
grub_memset (cbicb, 0, sizeof (cbicb));
|
||||
grub_memcpy (cbicb, cmd,
|
||||
cmdsize >= GRUB_USBMS_CBI_CMD_SIZE
|
||||
? GRUB_USBMS_CBI_CMD_SIZE
|
||||
: cmdsize);
|
||||
|
||||
/* Debug print of CBIcb content. */
|
||||
grub_dprintf ("usb", "cbicb:\n %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n",
|
||||
cbicb[ 0], cbicb[ 1], cbicb[ 2], cbicb[ 3],
|
||||
cbicb[ 4], cbicb[ 5], cbicb[ 6], cbicb[ 7],
|
||||
cbicb[ 8], cbicb[ 9], cbicb[10], cbicb[11]);
|
||||
|
||||
/* Write the request.
|
||||
* XXX: Error recovery is maybe not correct. */
|
||||
err = grub_usbms_cbi_cmd (dev->dev, dev->interface, cbicb);
|
||||
if (err)
|
||||
{
|
||||
grub_dprintf ("usb", "CBI cmdcb setup err=%d\n", err);
|
||||
if (err == GRUB_USB_ERR_STALL)
|
||||
{
|
||||
/* Stall in this place probably means bad or unsupported
|
||||
* command, so we will not try it again. */
|
||||
return grub_error (GRUB_ERR_IO, "USB Mass Storage CBI request failed");
|
||||
}
|
||||
else if (dev->protocol == GRUB_USBMS_PROTOCOL_CBI)
|
||||
{
|
||||
/* Try to get status from interrupt pipe */
|
||||
err = grub_usb_bulk_read (dev->dev, dev->intrpt->endp_addr,
|
||||
2, (char*)&status);
|
||||
grub_dprintf ("usb", "CBI cmdcb setup status: err=%d, status=0x%x\n", err, status);
|
||||
}
|
||||
/* Any other error could be transport problem, try it again */
|
||||
goto retry;
|
||||
}
|
||||
|
||||
/* Read/write the data, (maybe) according to specification. */
|
||||
if (size && (read_write == 0))
|
||||
{
|
||||
err = grub_usb_bulk_read (dev->dev, dev->in->endp_addr, size, buf);
|
||||
grub_dprintf ("usb", "read: %d\n", err);
|
||||
if (err)
|
||||
{
|
||||
if (err == GRUB_USB_ERR_STALL)
|
||||
grub_usb_clear_halt (dev->dev, dev->in->endp_addr);
|
||||
goto retry;
|
||||
}
|
||||
}
|
||||
else if (size)
|
||||
{
|
||||
err = grub_usb_bulk_write (dev->dev, dev->out->endp_addr, size, buf);
|
||||
grub_dprintf ("usb", "write: %d\n", err);
|
||||
if (err)
|
||||
{
|
||||
if (err == GRUB_USB_ERR_STALL)
|
||||
grub_usb_clear_halt (dev->dev, dev->out->endp_addr);
|
||||
goto retry;
|
||||
}
|
||||
}
|
||||
|
||||
/* XXX: It is not clear to me yet, how to check status of CBI
|
||||
* data transfer on devices without interrupt pipe.
|
||||
* AFAIK there is probably no status phase to indicate possibly
|
||||
* bad transported data.
|
||||
* Maybe we should do check on higher level, i.e. issue RequestSense
|
||||
* command (we do it already in scsi.c) and check returned values
|
||||
* (we do not it yet) - ? */
|
||||
if (dev->protocol == GRUB_USBMS_PROTOCOL_CBI)
|
||||
{ /* Check status in interrupt pipe */
|
||||
err = grub_usb_bulk_read (dev->dev, dev->intrpt->endp_addr,
|
||||
2, (char*)&status);
|
||||
grub_dprintf ("usb", "read status: %d\n", err);
|
||||
if (err)
|
||||
{
|
||||
/* Try to reset device, because it is probably not standard
|
||||
* situation */
|
||||
grub_usbms_reset (dev);
|
||||
grub_usb_clear_halt (dev->dev, dev->in->endp_addr);
|
||||
grub_usb_clear_halt (dev->dev, dev->out->endp_addr);
|
||||
grub_usb_clear_halt (dev->dev, dev->intrpt->endp_addr);
|
||||
goto retry;
|
||||
}
|
||||
if (dev->subclass == GRUB_USBMS_SUBCLASS_UFI)
|
||||
{
|
||||
/* These devices should return bASC and bASCQ */
|
||||
if (status != 0)
|
||||
/* Some error, currently we don't care what it is... */
|
||||
goto retry;
|
||||
}
|
||||
else if (dev->subclass == GRUB_USBMS_SUBCLASS_RBC)
|
||||
{
|
||||
/* XXX: I don't understand what returns RBC subclass devices,
|
||||
* so I don't check it - maybe somebody helps ? */
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Any other device should return bType = 0 and some bValue */
|
||||
if (status & 0xff)
|
||||
return grub_error (GRUB_ERR_IO, "USB Mass Storage CBI status type != 0");
|
||||
status = (status & 0x0300) >> 8;
|
||||
switch (status)
|
||||
{
|
||||
case 0 : /* OK */
|
||||
break;
|
||||
case 1 : /* Fail */
|
||||
goto retry;
|
||||
break;
|
||||
case 2 : /* Phase error */
|
||||
case 3 : /* Persistent Failure */
|
||||
grub_dprintf ("usb", "CBI reset device - phase error or persistent failure\n");
|
||||
grub_usbms_reset (dev);
|
||||
grub_usb_clear_halt (dev->dev, dev->in->endp_addr);
|
||||
grub_usb_clear_halt (dev->dev, dev->out->endp_addr);
|
||||
grub_usb_clear_halt (dev->dev, dev->intrpt->endp_addr);
|
||||
goto retry;
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return err;
|
||||
}
|
||||
|
||||
|
||||
static grub_err_t
|
||||
grub_usbms_transfer (struct grub_scsi *scsi, grub_size_t cmdsize, char *cmd,
|
||||
grub_size_t size, char *buf, int read_write)
|
||||
{
|
||||
grub_usbms_dev_t dev = (grub_usbms_dev_t) scsi->data;
|
||||
|
||||
if (dev->protocol == GRUB_USBMS_PROTOCOL_BULK)
|
||||
return grub_usbms_transfer_bo (scsi, cmdsize, cmd, size, buf,
|
||||
read_write);
|
||||
else
|
||||
return grub_usbms_transfer_cbi (scsi, cmdsize, cmd, size, buf,
|
||||
read_write);
|
||||
}
|
||||
|
||||
static grub_err_t
|
||||
grub_usbms_read (struct grub_scsi *scsi, grub_size_t cmdsize, char *cmd,
|
||||
|
|
|
|||
|
|
@ -251,7 +251,10 @@ typedef enum
|
|||
|
||||
typedef enum
|
||||
{
|
||||
GRUB_USBMS_PROTOCOL_BULK = 0x50
|
||||
GRUB_USBMS_PROTOCOL_BULK = 0x50,
|
||||
/* Experimental support for Control/Bulk/Interrupt (CBI) devices */
|
||||
GRUB_USBMS_PROTOCOL_CBI = 0x00, /* CBI with interrupt */
|
||||
GRUB_USBMS_PROTOCOL_CB = 0x01 /* CBI wthout interrupt */
|
||||
} grub_usbms_protocol_t;
|
||||
|
||||
static inline struct grub_usb_desc_if *
|
||||
|
|
|
|||
Loading…
Reference in New Issue