262 lines
7.8 KiB
C
262 lines
7.8 KiB
C
/*
|
|
* USB xHCI controller with PCI bus emulation
|
|
*
|
|
* SPDX-FileCopyrightText: 2011 Securiforest
|
|
* SPDX-FileContributor: Hector Martin <hector@marcansoft.com>
|
|
* SPDX-sourceInfo: Based on usb-ohci.c, emulates Renesas NEC USB 3.0
|
|
* SPDX-FileCopyrightText: 2020 Xilinx
|
|
* SPDX-FileContributor: Sai Pavan Boddu <sai.pavan.boddu@xilinx.com>
|
|
* SPDX-sourceInfo: Moved the pci specific content for hcd-xhci.c to
|
|
* hcd-xhci-pci.c
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
#include "qemu/osdep.h"
|
|
#include "hw/pci/pci.h"
|
|
#include "hw/qdev-properties.h"
|
|
#include "migration/vmstate.h"
|
|
#include "hw/pci/msi.h"
|
|
#include "hw/pci/msix.h"
|
|
#include "hcd-xhci-pci.h"
|
|
#include "trace.h"
|
|
#include "qapi/error.h"
|
|
|
|
#define OFF_MSIX_TABLE 0x3000
|
|
#define OFF_MSIX_PBA 0x3800
|
|
|
|
static void xhci_pci_intr_update(XHCIState *xhci, int n, bool enable)
|
|
{
|
|
XHCIPciState *s = container_of(xhci, XHCIPciState, xhci);
|
|
PCIDevice *pci_dev = PCI_DEVICE(s);
|
|
|
|
if (!msix_enabled(pci_dev)) {
|
|
return;
|
|
}
|
|
if (enable == !!xhci->intr[n].msix_used) {
|
|
return;
|
|
}
|
|
if (enable) {
|
|
trace_usb_xhci_irq_msix_use(n);
|
|
msix_vector_use(pci_dev, n);
|
|
xhci->intr[n].msix_used = true;
|
|
} else {
|
|
trace_usb_xhci_irq_msix_unuse(n);
|
|
msix_vector_unuse(pci_dev, n);
|
|
xhci->intr[n].msix_used = false;
|
|
}
|
|
}
|
|
|
|
static bool xhci_pci_intr_raise(XHCIState *xhci, int n, bool level)
|
|
{
|
|
XHCIPciState *s = container_of(xhci, XHCIPciState, xhci);
|
|
PCIDevice *pci_dev = PCI_DEVICE(s);
|
|
|
|
if (n == 0 &&
|
|
!(msix_enabled(pci_dev) ||
|
|
msi_enabled(pci_dev))) {
|
|
pci_set_irq(pci_dev, level);
|
|
}
|
|
|
|
if (msix_enabled(pci_dev) && level) {
|
|
msix_notify(pci_dev, n);
|
|
return true;
|
|
}
|
|
|
|
if (msi_enabled(pci_dev) && level) {
|
|
msi_notify(pci_dev, n);
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
static void xhci_pci_reset(DeviceState *dev)
|
|
{
|
|
XHCIPciState *s = XHCI_PCI(dev);
|
|
|
|
device_legacy_reset(DEVICE(&s->xhci));
|
|
}
|
|
|
|
static int xhci_pci_vmstate_post_load(void *opaque, int version_id)
|
|
{
|
|
XHCIPciState *s = XHCI_PCI(opaque);
|
|
PCIDevice *pci_dev = PCI_DEVICE(s);
|
|
int intr;
|
|
|
|
for (intr = 0; intr < s->xhci.numintrs; intr++) {
|
|
if (s->xhci.intr[intr].msix_used) {
|
|
msix_vector_use(pci_dev, intr);
|
|
} else {
|
|
msix_vector_unuse(pci_dev, intr);
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void usb_xhci_pci_realize(struct PCIDevice *dev, Error **errp)
|
|
{
|
|
int ret;
|
|
Error *err = NULL;
|
|
XHCIPciState *s = XHCI_PCI(dev);
|
|
|
|
dev->config[PCI_CLASS_PROG] = 0x30; /* xHCI */
|
|
dev->config[PCI_INTERRUPT_PIN] = 0x01; /* interrupt pin 1 */
|
|
dev->config[PCI_CACHE_LINE_SIZE] = 0x10;
|
|
dev->config[0x60] = 0x30; /* release number */
|
|
|
|
object_property_set_link(OBJECT(&s->xhci), "host", OBJECT(s), NULL);
|
|
s->xhci.intr_update = xhci_pci_intr_update;
|
|
s->xhci.intr_raise = xhci_pci_intr_raise;
|
|
if (!qdev_realize(DEVICE(&s->xhci), NULL, errp)) {
|
|
return;
|
|
}
|
|
if (strcmp(object_get_typename(OBJECT(dev)), TYPE_NEC_XHCI) == 0) {
|
|
s->xhci.nec_quirks = true;
|
|
}
|
|
|
|
if (s->msi != ON_OFF_AUTO_OFF) {
|
|
ret = msi_init(dev, 0x70, s->xhci.numintrs, true, false, &err);
|
|
/*
|
|
* Any error other than -ENOTSUP(board's MSI support is broken)
|
|
* is a programming error
|
|
*/
|
|
assert(!ret || ret == -ENOTSUP);
|
|
if (ret && s->msi == ON_OFF_AUTO_ON) {
|
|
/* Can't satisfy user's explicit msi=on request, fail */
|
|
error_append_hint(&err, "You have to use msi=auto (default) or "
|
|
"msi=off with this machine type.\n");
|
|
error_propagate(errp, err);
|
|
return;
|
|
}
|
|
assert(!err || s->msi == ON_OFF_AUTO_AUTO);
|
|
/* With msi=auto, we fall back to MSI off silently */
|
|
error_free(err);
|
|
}
|
|
pci_register_bar(dev, 0,
|
|
PCI_BASE_ADDRESS_SPACE_MEMORY |
|
|
PCI_BASE_ADDRESS_MEM_TYPE_64,
|
|
&s->xhci.mem);
|
|
|
|
if (pci_bus_is_express(pci_get_bus(dev)) ||
|
|
xhci_get_flag(&s->xhci, XHCI_FLAG_FORCE_PCIE_ENDCAP)) {
|
|
ret = pcie_endpoint_cap_init(dev, 0xa0);
|
|
assert(ret > 0);
|
|
}
|
|
|
|
if (s->msix != ON_OFF_AUTO_OFF) {
|
|
/* TODO check for errors, and should fail when msix=on */
|
|
msix_init(dev, s->xhci.numintrs,
|
|
&s->xhci.mem, 0, OFF_MSIX_TABLE,
|
|
&s->xhci.mem, 0, OFF_MSIX_PBA,
|
|
0x90, NULL);
|
|
}
|
|
s->xhci.as = pci_get_address_space(dev);
|
|
}
|
|
|
|
static void usb_xhci_pci_exit(PCIDevice *dev)
|
|
{
|
|
XHCIPciState *s = XHCI_PCI(dev);
|
|
/* destroy msix memory region */
|
|
if (dev->msix_table && dev->msix_pba
|
|
&& dev->msix_entry_used) {
|
|
msix_uninit(dev, &s->xhci.mem, &s->xhci.mem);
|
|
}
|
|
}
|
|
|
|
static const VMStateDescription vmstate_xhci_pci = {
|
|
.name = "xhci",
|
|
.version_id = 1,
|
|
.post_load = xhci_pci_vmstate_post_load,
|
|
.fields = (VMStateField[]) {
|
|
VMSTATE_PCI_DEVICE(parent_obj, XHCIPciState),
|
|
VMSTATE_MSIX(parent_obj, XHCIPciState),
|
|
VMSTATE_STRUCT(xhci, XHCIPciState, 1, vmstate_xhci, XHCIState),
|
|
VMSTATE_END_OF_LIST()
|
|
}
|
|
};
|
|
|
|
static void xhci_instance_init(Object *obj)
|
|
{
|
|
XHCIPciState *s = XHCI_PCI(obj);
|
|
/*
|
|
* QEMU_PCI_CAP_EXPRESS initialization does not depend on QEMU command
|
|
* line, therefore, no need to wait to realize like other devices
|
|
*/
|
|
PCI_DEVICE(obj)->cap_present |= QEMU_PCI_CAP_EXPRESS;
|
|
object_initialize_child(obj, "xhci-core", &s->xhci, TYPE_XHCI);
|
|
qdev_alias_all_properties(DEVICE(&s->xhci), obj);
|
|
}
|
|
|
|
static void xhci_class_init(ObjectClass *klass, void *data)
|
|
{
|
|
PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
|
|
DeviceClass *dc = DEVICE_CLASS(klass);
|
|
|
|
dc->reset = xhci_pci_reset;
|
|
dc->vmsd = &vmstate_xhci_pci;
|
|
set_bit(DEVICE_CATEGORY_USB, dc->categories);
|
|
k->realize = usb_xhci_pci_realize;
|
|
k->exit = usb_xhci_pci_exit;
|
|
k->class_id = PCI_CLASS_SERIAL_USB;
|
|
}
|
|
|
|
static const TypeInfo xhci_pci_info = {
|
|
.name = TYPE_XHCI_PCI,
|
|
.parent = TYPE_PCI_DEVICE,
|
|
.instance_size = sizeof(XHCIPciState),
|
|
.class_init = xhci_class_init,
|
|
.instance_init = xhci_instance_init,
|
|
.abstract = true,
|
|
.interfaces = (InterfaceInfo[]) {
|
|
{ INTERFACE_PCIE_DEVICE },
|
|
{ INTERFACE_CONVENTIONAL_PCI_DEVICE },
|
|
{ }
|
|
},
|
|
};
|
|
|
|
static void qemu_xhci_class_init(ObjectClass *klass, void *data)
|
|
{
|
|
PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
|
|
|
|
k->vendor_id = PCI_VENDOR_ID_REDHAT;
|
|
k->device_id = PCI_DEVICE_ID_REDHAT_XHCI;
|
|
k->revision = 0x01;
|
|
}
|
|
|
|
static void qemu_xhci_instance_init(Object *obj)
|
|
{
|
|
XHCIPciState *s = XHCI_PCI(obj);
|
|
XHCIState *xhci = &s->xhci;
|
|
|
|
s->msi = ON_OFF_AUTO_OFF;
|
|
s->msix = ON_OFF_AUTO_AUTO;
|
|
xhci->numintrs = XHCI_MAXINTRS;
|
|
xhci->numslots = XHCI_MAXSLOTS;
|
|
xhci_set_flag(xhci, XHCI_FLAG_SS_FIRST);
|
|
}
|
|
|
|
static const TypeInfo qemu_xhci_info = {
|
|
.name = TYPE_QEMU_XHCI,
|
|
.parent = TYPE_XHCI_PCI,
|
|
.class_init = qemu_xhci_class_init,
|
|
.instance_init = qemu_xhci_instance_init,
|
|
};
|
|
|
|
static void xhci_register_types(void)
|
|
{
|
|
type_register_static(&xhci_pci_info);
|
|
type_register_static(&qemu_xhci_info);
|
|
}
|
|
|
|
type_init(xhci_register_types)
|