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ehci: update the data toggle bit when reenabling an interrupt transfer.

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Previously every second transfer was dropped. We didn't notice, because
they were normally key release events, which we ignored anyway. However
the new keyboard report handler needs to see the release events.
This commit is contained in:
Martin Whitaker
2022-05-01 18:27:13 +01:00
parent c3bdb556d1
commit f7d31df412
1 changed files with 6 additions and 2 deletions
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8
system/ehci.c
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@@ -115,6 +115,8 @@
// - data_length member (16 bits)
#define EHCI_QTD_DT_MASK 0x8000
#define EHCI_QTD_DT(n) ((n) << 15) // Data Toggle = n (n = 0,1)
// Queue head data structure
@@ -460,9 +462,11 @@ static void poll_keyboards(const usb_hcd_t *hcd)
*prev_kbd_rpt = *kbd_rpt;
}
build_ehci_qtd(kbd_qtd, kbd_qtd, EHCI_QTD_PID_IN, EHCI_QTD_DT(1), kbd_rpt, sizeof(hid_kbd_rpt_t));
ehci_qhd_t *kbd_qhd = &ws->qhd[1 + kbd_idx];
uint16_t dt = kbd_qhd->data_length & EHCI_QTD_DT_MASK;
build_ehci_qtd(kbd_qtd, kbd_qtd, EHCI_QTD_PID_IN, dt, kbd_rpt, sizeof(hid_kbd_rpt_t));
kbd_qhd->next_qtd_ptr = (uintptr_t)kbd_qtd;
}
}