libpayload: Fill gaps in the xHCI driver
Well, it turned out to be more as some gaps ;) but we finally have xHCI running. It's well tested against a QM77 Ivy Bridge board. We have no SuperSpeed support (yet). On Ivy Bridge, SuperSpeed is not advertised and USB 3 devices will just work at HighSpeed. There are still some bit fields in xhci_private.h, so this might need little more work to run on ARM. Change-Id: I7a2cb3f226d24573659142565db38b13acdc218c Signed-off-by: Nico Huber <nico.huber@secunet.com> Signed-off-by: Patrick Georgi <patrick.georgi@secunet.com> Reviewed-on: http://review.coreboot.org/3452 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
This commit is contained in:
Nico Huber
committed by
Stefan Reinauer
Stefan Reinauer
parent
5736fab4be
commit
9029265cf5
204
payloads/libpayload/drivers/usb/xhci_commands.c
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204
payloads/libpayload/drivers/usb/xhci_commands.c
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/*
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* This file is part of the libpayload project.
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*
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* Copyright (C) 2013 secunet Security Networks AG
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <inttypes.h>
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#include <arch/virtual.h>
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#include "xhci_private.h"
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trb_t *
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xhci_next_command_trb(xhci_t *const xhci)
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{
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xhci_clear_trb(xhci->cr.cur, xhci->cr.pcs);
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return xhci->cr.cur;
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}
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void
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xhci_post_command(xhci_t *const xhci)
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{
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xhci_debug("Command %d (@%p)\n",
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TRB_GET(TT, xhci->cr.cur), xhci->cr.cur);
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TRB_SET(C, xhci->cr.cur, xhci->cr.pcs);
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++xhci->cr.cur;
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/* Ring the doorbell */
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xhci->dbreg[0] = 0;
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while (TRB_GET(TT, xhci->cr.cur) == TRB_LINK) {
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xhci_debug("Handling LINK pointer (@%p)\n", xhci->cr.cur);
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const int tc = TRB_GET(TC, xhci->cr.cur);
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TRB_SET(C, xhci->cr.cur, xhci->cr.pcs);
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xhci->cr.cur = phys_to_virt(xhci->cr.cur->ptr_low);
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if (tc)
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xhci->cr.pcs ^= 1;
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}
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}
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static int
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xhci_wait_for_command(xhci_t *const xhci,
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const trb_t *const cmd_trb,
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const int clear_event)
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{
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int cc;
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cc = xhci_wait_for_command_done(xhci, cmd_trb, clear_event);
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if (cc != TIMEOUT)
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return cc;
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/* Abort command on timeout */
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xhci_debug("Aborting command (@%p), CRCR: 0x%"PRIx32"\n",
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cmd_trb, xhci->opreg->crcr_lo);
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xhci->opreg->crcr_lo |= CRCR_CS | CRCR_CA;
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xhci->opreg->crcr_hi = 0;
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cc = xhci_wait_for_command_aborted(xhci, cmd_trb);
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if (xhci->opreg->crcr_lo & CRCR_CRR)
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fatal("xhci_wait_for_command: Command ring still running\n");
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return cc;
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}
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/*
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* xhci_cmd_* return >= 0: xhci completion code (cc)
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* < 0: driver error code
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*/
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int
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xhci_cmd_enable_slot(xhci_t *const xhci, int *const slot_id)
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{
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trb_t *const cmd = xhci_next_command_trb(xhci);
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TRB_SET(TT, cmd, TRB_CMD_ENABLE_SLOT);
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xhci_post_command(xhci);
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int cc = xhci_wait_for_command(xhci, cmd, 0);
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if (cc >= 0) {
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if (cc == CC_SUCCESS) {
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*slot_id = TRB_GET(ID, xhci->er.cur);
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if (*slot_id > xhci->max_slots_en)
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cc = CONTROLLER_ERROR;
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}
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xhci_advance_event_ring(xhci);
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xhci_handle_events(xhci);
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}
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return cc;
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}
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int
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xhci_cmd_disable_slot(xhci_t *const xhci, const int slot_id)
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{
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trb_t *const cmd = xhci_next_command_trb(xhci);
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TRB_SET(TT, cmd, TRB_CMD_DISABLE_SLOT);
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TRB_SET(ID, cmd, slot_id);
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xhci_post_command(xhci);
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return xhci_wait_for_command(xhci, cmd, 1);
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}
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int
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xhci_cmd_address_device(xhci_t *const xhci,
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const int slot_id,
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inputctx_t *const ic)
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{
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trb_t *const cmd = xhci_next_command_trb(xhci);
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TRB_SET(TT, cmd, TRB_CMD_ADDRESS_DEV);
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TRB_SET(ID, cmd, slot_id);
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cmd->ptr_low = virt_to_phys(ic);
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xhci_post_command(xhci);
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return xhci_wait_for_command(xhci, cmd, 1);
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}
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int
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xhci_cmd_configure_endpoint(xhci_t *const xhci,
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const int slot_id,
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const int config_id,
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inputctx_t *const ic)
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{
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trb_t *const cmd = xhci_next_command_trb(xhci);
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TRB_SET(TT, cmd, TRB_CMD_CONFIGURE_EP);
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TRB_SET(ID, cmd, slot_id);
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cmd->ptr_low = virt_to_phys(ic);
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if (config_id == 0)
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TRB_SET(DC, cmd, 1);
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xhci_post_command(xhci);
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return xhci_wait_for_command(xhci, cmd, 1);
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}
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int
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xhci_cmd_evaluate_context(xhci_t *const xhci,
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const int slot_id,
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inputctx_t *const ic)
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{
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trb_t *const cmd = xhci_next_command_trb(xhci);
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TRB_SET(TT, cmd, TRB_CMD_EVAL_CTX);
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TRB_SET(ID, cmd, slot_id);
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cmd->ptr_low = virt_to_phys(ic);
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xhci_post_command(xhci);
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return xhci_wait_for_command(xhci, cmd, 1);
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}
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int
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xhci_cmd_reset_endpoint(xhci_t *const xhci, const int slot_id, const int ep)
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{
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trb_t *const cmd = xhci_next_command_trb(xhci);
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TRB_SET(TT, cmd, TRB_CMD_RESET_EP);
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TRB_SET(ID, cmd, slot_id);
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TRB_SET(EP, cmd, ep);
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xhci_post_command(xhci);
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return xhci_wait_for_command(xhci, cmd, 1);
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}
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int
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xhci_cmd_stop_endpoint(xhci_t *const xhci, const int slot_id, const int ep)
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{
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trb_t *const cmd = xhci_next_command_trb(xhci);
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TRB_SET(TT, cmd, TRB_CMD_STOP_EP);
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TRB_SET(ID, cmd, slot_id);
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TRB_SET(EP, cmd, ep);
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xhci_post_command(xhci);
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return xhci_wait_for_command(xhci, cmd, 1);
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}
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int
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xhci_cmd_set_tr_dq(xhci_t *const xhci, const int slot_id, const int ep,
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trb_t *const dq_trb, const int dcs)
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{
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trb_t *const cmd = xhci_next_command_trb(xhci);
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TRB_SET(TT, cmd, TRB_CMD_SET_TR_DQ);
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TRB_SET(ID, cmd, slot_id);
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TRB_SET(EP, cmd, ep);
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cmd->ptr_low = virt_to_phys(dq_trb) | dcs;
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xhci_post_command(xhci);
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return xhci_wait_for_command(xhci, cmd, 1);
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}
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