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Set UHCI low-speed flag

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Aleš Nesrsta 2010-09-18 10:56:52 +02:00 committed by Vladimir 'phcoder' Serbinenko
parent 70770806f3
commit b9c7e9d400
1 changed files with 5 additions and 3 deletions
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8
grub-core/bus/usb/uhci.c
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@ -414,7 +414,7 @@ static grub_uhci_td_t
grub_uhci_transaction (struct grub_uhci *u, unsigned int endp, grub_uhci_transaction (struct grub_uhci *u, unsigned int endp,
grub_transfer_type_t type, unsigned int addr, grub_transfer_type_t type, unsigned int addr,
unsigned int toggle, grub_size_t size, unsigned int toggle, grub_size_t size,
grub_uint32_t data) grub_uint32_t data, grub_usb_speed_t speed)
{ {
grub_uhci_td_t td; grub_uhci_td_t td;
static const unsigned int tf[] = { 0x69, 0xE1, 0x2D }; static const unsigned int tf[] = { 0x69, 0xE1, 0x2D };
@ -439,7 +439,8 @@ grub_uhci_transaction (struct grub_uhci *u, unsigned int endp,
td->linkptr = 1; td->linkptr = 1;
/* Active! Only retry a transfer 3 times. */ /* Active! Only retry a transfer 3 times. */
td->ctrl_status = (1 << 23) | (3 << 27); td->ctrl_status = (1 << 23) | (3 << 27) |
((speed == GRUB_USB_SPEED_LOW) ? (1 << 26) : 0);
/* If zero bytes are transmitted, size is 0x7FF. Otherwise size is /* If zero bytes are transmitted, size is 0x7FF. Otherwise size is
size-1. */ size-1. */
@ -495,7 +496,8 @@ grub_uhci_setup_transfer (grub_usb_controller_t dev,
td = grub_uhci_transaction (u, transfer->endpoint & 15, tr->pid, td = grub_uhci_transaction (u, transfer->endpoint & 15, tr->pid,
transfer->devaddr, tr->toggle, transfer->devaddr, tr->toggle,
tr->size, tr->data); tr->size, tr->data,
transfer->dev->speed);
if (! td) if (! td)
{ {
grub_size_t actual = 0; grub_size_t actual = 0;