93ded5905c
The "debug" macro used internally in the libpayload USB subsystem was very generically named and would leak into consumers of the library that included usb.h directly or indirectly. This change turns that #define from a macro into a static inline function to move away from the preprocessor, and also renames it to usb_debug so it's less likely to collide with something unrelated. Change-Id: I18717df111aa9671495f8a2a5bdb2c6311fa7acf Signed-off-by: Gabe Black <gabeblack@google.com> Reviewed-on: http://review.coreboot.org/1738 Reviewed-by: Patrick Georgi <patrick@georgi-clan.de> Tested-by: build bot (Jenkins)
133 lines
3.7 KiB
C
133 lines
3.7 KiB
C
/*
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* This file is part of the libpayload project.
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*
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* Copyright (C) 2010 Patrick Georgi
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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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#define USB_DEBUG
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#include <libpayload.h>
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#include "xhci_private.h"
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#include "xhci.h"
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typedef struct {
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int numports;
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int *port;
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} rh_inst_t;
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#define RH_INST(dev) ((rh_inst_t*)(dev)->data)
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static void
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xhci_rh_enable_port (usbdev_t *dev, int port)
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{
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// FIXME: check power situation?
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// enable slot
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// attach device context to slot
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// address device
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}
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/* disable root hub */
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static void
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xhci_rh_disable_port (usbdev_t *dev, int port)
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{
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}
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static void
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xhci_rh_scanport (usbdev_t *dev, int port)
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{
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// clear CSC
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int val = XHCI_INST (dev->controller)->opreg->prs[port].portsc;
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val &= PORTSC_RW_MASK;
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val |= PORTSC_CSC;
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XHCI_INST (dev->controller)->opreg->prs[port].portsc = val;
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usb_debug("device attach status on port %x: %x\n", port, XHCI_INST (dev->controller)->opreg->prs[port].portsc & PORTSC_CCS);
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}
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static int
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xhci_rh_report_port_changes (usbdev_t *dev)
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{
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int i;
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// no change
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if (!(XHCI_INST (dev->controller)->opreg->usbsts & USBSTS_PCD))
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return -1;
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for (i = 0; i < RH_INST (dev)->numports; i++) {
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if (XHCI_INST (dev->controller)->opreg->prs[i].portsc & PORTSC_CSC) {
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usb_debug("found connect status change on port %d\n", i);
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return i;
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}
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}
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return -1; // shouldn't ever happen
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}
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static void
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xhci_rh_destroy (usbdev_t *dev)
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{
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int i;
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for (i = 0; i < RH_INST (dev)->numports; i++)
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xhci_rh_disable_port (dev, i);
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free (RH_INST (dev));
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}
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static void
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xhci_rh_poll (usbdev_t *dev)
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{
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int port;
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while ((port = xhci_rh_report_port_changes (dev)) != -1)
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xhci_rh_scanport (dev, port);
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}
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void
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xhci_rh_init (usbdev_t *dev)
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{
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int i;
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dev->destroy = xhci_rh_destroy;
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dev->poll = xhci_rh_poll;
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dev->data = malloc (sizeof (rh_inst_t));
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if (!dev->data)
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fatal("Not enough memory for XHCI RH.\n");
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RH_INST (dev)->numports = XHCI_INST (dev->controller)->capreg->MaxPorts;
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RH_INST (dev)->port = malloc(sizeof(int) * RH_INST (dev)->numports);
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usb_debug("%d ports registered\n", RH_INST (dev)->numports);
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for (i = 0; i < RH_INST (dev)->numports; i++) {
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xhci_rh_enable_port (dev, i);
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RH_INST (dev)->port[i] = -1;
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}
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/* we can set them here because a root hub _really_ shouldn't
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appear elsewhere */
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dev->address = 0;
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dev->hub = -1;
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dev->port = -1;
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usb_debug("rh init done\n");
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}
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