Restructure usbms as a preparation for hotplug
This commit is contained in:
Vladimir 'phcoder' Serbinenko
parent
4f034dd24d
commit
440ab68551
3 changed files with 227 additions and 169 deletions
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@ -21,6 +21,7 @@
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#include <grub/mm.h>
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#include <grub/usb.h>
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#include <grub/misc.h>
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#include <grub/list.h>
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static grub_usb_controller_dev_t grub_usb_list;
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@ -232,3 +233,53 @@ grub_usb_device_initialize (grub_usb_device_t dev)
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return err;
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}
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struct grub_usb_attach_desc *attach_hooks;
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void
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grub_usb_register_attach_hook_class (struct grub_usb_attach_desc *desc)
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{
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auto int usb_iterate (grub_usb_device_t dev);
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int usb_iterate (grub_usb_device_t usbdev)
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{
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struct grub_usb_desc_device *descdev = &usbdev->descdev;
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int i;
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if (descdev->class != 0 || descdev->subclass || descdev->protocol != 0
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|| descdev->configcnt == 0)
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return 0;
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/* XXX: Just check configuration 0 for now. */
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for (i = 0; i < usbdev->config[0].descconf->numif; i++)
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{
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struct grub_usb_desc_if *interf;
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interf = usbdev->config[0].interf[i].descif;
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grub_dprintf ("usb", "iterate: interf=%d, class=%d, subclass=%d, protocol=%d\n",
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i, interf->class, interf->subclass, interf->protocol);
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if (usbdev->config[0].interf[i].attached)
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continue;
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if (interf->class != desc->class)
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continue;
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if (desc->hook (usbdev, 0, i))
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usbdev->config[0].interf[i].attached = 1;
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}
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return 0;
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}
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desc->next = attach_hooks;
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attach_hooks = desc;
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grub_usb_iterate (usb_iterate);
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}
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void
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grub_usb_unregister_attach_hook_class (struct grub_usb_attach_desc *desc)
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{
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grub_list_remove (GRUB_AS_LIST_P (&attach_hooks), GRUB_AS_LIST (desc));
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}
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173
disk/usbms.c
173
disk/usbms.c
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@ -52,20 +52,19 @@ struct grub_usbms_dev
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int luns;
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int config;
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int interface;
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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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struct grub_usbms_dev *next;
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};
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typedef struct grub_usbms_dev *grub_usbms_dev_t;
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static grub_usbms_dev_t grub_usbms_dev_list;
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static int devcnt;
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/* FIXME: remove limit. */
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#define MAX_USBMS_DEVICES 128
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static grub_usbms_dev_t grub_usbms_devices[MAX_USBMS_DEVICES];
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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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@ -74,58 +73,53 @@ grub_usbms_reset (grub_usb_device_t dev, int interface)
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}
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static void
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grub_usbms_finddevs (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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auto int usb_iterate (grub_usb_device_t dev);
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int usb_iterate (grub_usb_device_t usbdev)
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unsigned i;
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for (i = 0; i < ARRAY_SIZE (grub_usbms_devices); i++)
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if (grub_usbms_devices[i] && grub_usbms_devices[i]->dev == usbdev
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&& grub_usbms_devices[i]->interface == interface
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&& grub_usbms_devices[i]->config == config)
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{
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grub_usb_err_t err;
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struct grub_usb_desc_device *descdev = &usbdev->descdev;
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int i;
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grub_free (grub_usbms_devices[i]);
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grub_usbms_devices[i] = 0;
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}
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}
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if (descdev->class != 0 || descdev->subclass || descdev->protocol != 0
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|| descdev->configcnt == 0)
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return 0;
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/* XXX: Just check configuration 0 for now. */
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for (i = 0; i < usbdev->config[0].descconf->numif; i++)
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{
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struct grub_usbms_dev *usbms;
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struct grub_usb_desc_if *interf;
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static int
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grub_usbms_attach (grub_usb_device_t usbdev, int configno, int interfno)
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{
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struct grub_usb_desc_if *interf
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= usbdev->config[configno].interf[interfno].descif;
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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_dprintf ("usbms", "alive\n");
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for (curnum = 0; curnum < ARRAY_SIZE (grub_usbms_devices); curnum++)
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if (!grub_usbms_devices[curnum])
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break;
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interf = usbdev->config[0].interf[i].descif;
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if (curnum == ARRAY_SIZE (grub_usbms_devices))
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return 0;
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/* If this is not a USB Mass Storage device with a supported
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protocol, just skip it. */
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grub_dprintf ("usbms", "iterate: interf=%d, class=%d, subclass=%d, protocol=%d\n",
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i, interf->class, interf->subclass, interf->protocol);
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interf = usbdev->config[configno].interf[interfno].descif;
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if (interf->class != GRUB_USB_CLASS_MASS_STORAGE
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|| ( interf->subclass != GRUB_USBMS_SUBCLASS_BULK &&
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if ((interf->subclass != GRUB_USBMS_SUBCLASS_BULK
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/* Experimental support of RBC, MMC-2, UFI, SFF-8070i devices */
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interf->subclass != GRUB_USBMS_SUBCLASS_RBC &&
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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->subclass != GRUB_USBMS_SUBCLASS_RBC
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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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{
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continue;
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}
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return 0;
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grub_dprintf ("usbms", "alive\n");
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grub_usbms_devices[curnum] = grub_zalloc (sizeof (struct grub_usbms_dev));
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if (! grub_usbms_devices[curnum])
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return 0;
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devcnt++;
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usbms = grub_zalloc (sizeof (struct grub_usbms_dev));
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if (! usbms)
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return 1;
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usbms->dev = usbdev;
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usbms->interface = i;
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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_dprintf ("usbms", "alive\n");
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@ -134,29 +128,30 @@ grub_usbms_finddevs (void)
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for (j = 0; j < interf->endpointcnt; j++)
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{
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struct grub_usb_desc_endp *endp;
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endp = &usbdev->config[0].interf[i].descendp[j];
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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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usbms->in = endp;
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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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usbms->in_maxsz = endp->maxpacket;
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grub_usbms_devices[curnum]->in_maxsz = endp->maxpacket;
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}
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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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usbms->out = endp;
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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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usbms->out_maxsz = endp->maxpacket;
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grub_usbms_devices[curnum]->out_maxsz = endp->maxpacket;
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}
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}
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if (!usbms->in || !usbms->out)
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if (!grub_usbms_devices[curnum]->in || !grub_usbms_devices[curnum]->out)
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{
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grub_free (usbms);
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grub_free (grub_usbms_devices[curnum]);
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grub_usbms_devices[curnum] = 0;
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return 0;
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}
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@ -166,32 +161,30 @@ grub_usbms_finddevs (void)
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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,
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0, i, 1, (char *) &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, usbms->in->endp_addr);
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grub_usb_clear_halt (usbdev, usbms->out->endp_addr);
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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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usbms->luns = 1;
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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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usbms->luns = luns + 1;
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grub_usbms_devices[curnum]->luns = luns + 1;
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grub_dprintf ("usbms", "alive\n");
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usbms->next = grub_usbms_dev_list;
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grub_usbms_dev_list = usbms;
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usbdev->config[configno].interf[interfno].detach_hook = grub_usbms_detach;
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#if 0 /* All this part should be probably deleted.
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* This make trouble on some devices if they are not in
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@ -206,17 +199,7 @@ grub_usbms_finddevs (void)
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grub_usb_clear_halt (usbdev, usbms->out->endp_addr);
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#endif
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return 0;
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}
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grub_dprintf ("usbms", "alive\n");
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return 0;
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}
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grub_dprintf ("usbms", "alive\n");
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grub_usb_iterate (usb_iterate);
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grub_dprintf ("usbms", "alive\n");
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return 1;
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}
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@ -224,21 +207,20 @@ grub_usbms_finddevs (void)
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static int
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grub_usbms_iterate (int (*hook) (const char *name, int luns))
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{
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grub_usbms_dev_t p;
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int cnt = 0;
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unsigned i;
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for (p = grub_usbms_dev_list; p; p = p->next)
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for (i = 0; i < ARRAY_SIZE (grub_usbms_devices); i++)
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if (grub_usbms_devices[i])
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{
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char *devname;
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devname = grub_xasprintf ("usb%d", cnt);
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devname = grub_xasprintf ("usb%d", i);
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if (hook (devname, p->luns))
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if (hook (devname, grub_usbms_devices[i]->luns))
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{
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grub_free (devname);
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return 1;
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}
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grub_free (devname);
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cnt++;
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}
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return 0;
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@ -400,34 +382,24 @@ grub_usbms_write (struct grub_scsi *scsi, grub_size_t cmdsize, char *cmd,
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static grub_err_t
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grub_usbms_open (const char *name, struct grub_scsi *scsi)
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{
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grub_usbms_dev_t p;
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int devnum;
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int i = 0;
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if (grub_strncmp (name, "usb", 3))
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return grub_error (GRUB_ERR_UNKNOWN_DEVICE,
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"not a USB Mass Storage device");
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devnum = grub_strtoul (name + 3, NULL, 10);
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for (p = grub_usbms_dev_list; p; p = p->next)
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{
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/* Check if this is the devnumth device. */
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if (devnum == i)
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{
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scsi->data = p;
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if (!grub_usbms_devices[devnum])
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return grub_error (GRUB_ERR_UNKNOWN_DEVICE,
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"not a USB Mass Storage device");
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scsi->data = grub_usbms_devices[devnum];
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scsi->name = grub_strdup (name);
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scsi->luns = p->luns;
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scsi->luns = grub_usbms_devices[devnum]->luns;
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if (! scsi->name)
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return grub_errno;
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return GRUB_ERR_NONE;
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}
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i++;
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}
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return grub_error (GRUB_ERR_UNKNOWN_DEVICE,
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"not a USB Mass Storage device");
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}
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static void
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@ -446,13 +418,28 @@ static struct grub_scsi_dev grub_usbms_dev =
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.write = grub_usbms_write
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};
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struct grub_usb_attach_desc attach_hook =
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{
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.class = GRUB_USB_CLASS_MASS_STORAGE,
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.hook = grub_usbms_attach
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};
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GRUB_MOD_INIT(usbms)
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{
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grub_usbms_finddevs ();
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grub_usb_register_attach_hook_class (&attach_hook);
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grub_scsi_dev_register (&grub_usbms_dev);
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}
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GRUB_MOD_FINI(usbms)
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{
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unsigned i;
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for (i = 0; i < ARRAY_SIZE (grub_usbms_devices); i++)
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{
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grub_usbms_devices[i]->dev->config[grub_usbms_devices[i]->config]
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.interf[grub_usbms_devices[i]->interface].detach_hook = 0;
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grub_usbms_devices[i]->dev->config[grub_usbms_devices[i]->config]
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.interf[grub_usbms_devices[i]->interface].attached = 0;
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}
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grub_usb_unregister_attach_hook_class (&attach_hook);
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grub_scsi_dev_unregister (&grub_usbms_dev);
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}
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@ -125,6 +125,13 @@ struct grub_usb_interface
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struct grub_usb_desc_if *descif;
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struct grub_usb_desc_endp *descendp;
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/* A driver is handling this interface. Do we need to support multiple drivers
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for single interface?
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*/
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int attached;
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void (*detach_hook) (struct grub_usb_device *dev, int config, int interface);
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};
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struct grub_usb_configuration
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@ -207,4 +214,17 @@ grub_usb_get_config_interface (struct grub_usb_desc_config *config)
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return interf;
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}
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typedef int (*grub_usb_attach_hook_class) (grub_usb_device_t usbdev,
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int configno, int interfno);
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struct grub_usb_attach_desc
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{
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struct grub_usb_attach_desc *next;
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int class;
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grub_usb_attach_hook_class hook;
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};
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void grub_usb_register_attach_hook_class (struct grub_usb_attach_desc *desc);
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void grub_usb_unregister_attach_hook_class (struct grub_usb_attach_desc *desc);
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#endif /* GRUB_USB_H */
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