#include "hw/pci/pci.h"
#include "hw/pci/pci_bridge.h"
#include "hw/pci/pci_bus.h"
+#include "hw/pci/pci_host.h"
#include "monitor/monitor.h"
#include "net/net.h"
#include "sysemu/sysemu.h"
static uint16_t pci_default_sub_vendor_id = PCI_SUBVENDOR_ID_REDHAT_QUMRANET;
static uint16_t pci_default_sub_device_id = PCI_SUBDEVICE_ID_QEMU;
-struct PCIHostBus {
- int domain;
- struct PCIBus *bus;
- QLIST_ENTRY(PCIHostBus) next;
-};
-static QLIST_HEAD(, PCIHostBus) host_buses;
+static QLIST_HEAD(, PCIHostState) pci_host_bridges;
static const VMStateDescription vmstate_pcibus = {
.name = "PCIBUS",
return 1;
}
-static void pci_host_bus_register(int domain, PCIBus *bus)
+static void pci_host_bus_register(PCIBus *bus, DeviceState *parent)
{
- struct PCIHostBus *host;
- host = g_malloc0(sizeof(*host));
- host->domain = domain;
- host->bus = bus;
- QLIST_INSERT_HEAD(&host_buses, host, next);
+ PCIHostState *host_bridge = PCI_HOST_BRIDGE(parent);
+
+ QLIST_INSERT_HEAD(&pci_host_bridges, host_bridge, next);
}
-PCIBus *pci_find_root_bus(int domain)
+PCIBus *pci_find_primary_bus(void)
{
- struct PCIHostBus *host;
+ PCIBus *primary_bus = NULL;
+ PCIHostState *host;
- QLIST_FOREACH(host, &host_buses, next) {
- if (host->domain == domain) {
- return host->bus;
+ QLIST_FOREACH(host, &pci_host_bridges, next) {
+ if (primary_bus) {
+ /* We have multiple root buses, refuse to select a primary */
+ return NULL;
}
+ primary_bus = host->bus;
}
- return NULL;
+ return primary_bus;
}
-int pci_find_domain(const PCIBus *bus)
+PCIBus *pci_device_root_bus(const PCIDevice *d)
{
- PCIDevice *d;
- struct PCIHostBus *host;
+ PCIBus *bus = d->bus;
- /* obtain root bus */
while ((d = bus->parent_dev) != NULL) {
bus = d->bus;
}
- QLIST_FOREACH(host, &host_buses, next) {
- if (host->bus == bus) {
- return host->domain;
- }
+ return bus;
+}
+
+const char *pci_root_bus_path(PCIDevice *dev)
+{
+ PCIBus *rootbus = pci_device_root_bus(dev);
+ PCIHostState *host_bridge = PCI_HOST_BRIDGE(rootbus->qbus.parent);
+ PCIHostBridgeClass *hc = PCI_HOST_BRIDGE_GET_CLASS(host_bridge);
+
+ assert(!rootbus->parent_dev);
+ assert(host_bridge->bus == rootbus);
+
+ if (hc->root_bus_path) {
+ return (*hc->root_bus_path)(host_bridge, rootbus);
}
- abort(); /* should not be reached */
- return -1;
+ return rootbus->qbus.name;
}
static void pci_bus_init(PCIBus *bus, DeviceState *parent,
/* host bridge */
QLIST_INIT(&bus->child);
- pci_host_bus_register(0, bus); /* for now only pci domain 0 is supported */
+
+ pci_host_bus_register(bus, parent);
vmstate_register(NULL, -1, &vmstate_pcibus, bus);
}
return 0;
}
-PCIBus *pci_get_bus_devfn(int *devfnp, const char *devaddr)
+PCIBus *pci_get_bus_devfn(int *devfnp, PCIBus *root, const char *devaddr)
{
int dom, bus;
unsigned slot;
+ assert(!root->parent_dev);
+
+ if (!root) {
+ fprintf(stderr, "No primary PCI bus\n");
+ return NULL;
+ }
+
if (!devaddr) {
*devfnp = -1;
- return pci_find_bus_nr(pci_find_root_bus(0), 0);
+ return pci_find_bus_nr(root, 0);
}
if (pci_parse_devaddr(devaddr, &dom, &bus, &slot, NULL) < 0) {
return NULL;
}
+ if (dom != 0) {
+ fprintf(stderr, "No support for non-zero PCI domains\n");
+ return NULL;
+ }
+
*devfnp = PCI_DEVFN(slot, 0);
- return pci_find_bus_nr(pci_find_root_bus(dom), bus);
+ return pci_find_bus_nr(root, bus);
}
static void pci_init_cmask(PCIDevice *dev)
dma_as = &address_space_memory;
}
- memory_region_init_alias(&pci_dev->bus_master_enable_region, "bus master",
+ memory_region_init_alias(&pci_dev->bus_master_enable_region,
+ OBJECT(pci_dev), "bus master",
dma_as->root, 0, memory_region_size(dma_as->root));
memory_region_set_enabled(&pci_dev->bus_master_enable_region, false);
address_space_init(&pci_dev->bus_master_as, &pci_dev->bus_master_enable_region,
PciInfoList *qmp_query_pci(Error **errp)
{
PciInfoList *info, *head = NULL, *cur_item = NULL;
- struct PCIHostBus *host;
+ PCIHostState *host_bridge;
- QLIST_FOREACH(host, &host_buses, next) {
+ QLIST_FOREACH(host_bridge, &pci_host_bridges, next) {
info = g_malloc0(sizeof(*info));
- info->value = qmp_query_pci_bus(host->bus, 0);
+ info->value = qmp_query_pci_bus(host_bridge->bus, 0);
/* XXX: waiting for the qapi to support GSList */
if (!cur_item) {
/* Initialize a PCI NIC. */
/* FIXME callers should check for failure, but don't */
-PCIDevice *pci_nic_init(NICInfo *nd, const char *default_model,
+PCIDevice *pci_nic_init(NICInfo *nd, PCIBus *rootbus,
+ const char *default_model,
const char *default_devaddr)
{
const char *devaddr = nd->devaddr ? nd->devaddr : default_devaddr;
if (i < 0)
return NULL;
- bus = pci_get_bus_devfn(&devfn, devaddr);
+ bus = pci_get_bus_devfn(&devfn, rootbus, devaddr);
if (!bus) {
error_report("Invalid PCI device address %s for device %s",
devaddr, pci_nic_names[i]);
return pci_dev;
}
-PCIDevice *pci_nic_init_nofail(NICInfo *nd, const char *default_model,
+PCIDevice *pci_nic_init_nofail(NICInfo *nd, PCIBus *rootbus,
+ const char *default_model,
const char *default_devaddr)
{
PCIDevice *res;
if (qemu_show_nic_models(nd->model, pci_nic_models))
exit(0);
- res = pci_nic_init(nd, default_model, default_devaddr);
+ res = pci_nic_init(nd, rootbus, default_model, default_devaddr);
if (!res)
exit(1);
return res;
snprintf(name, sizeof(name), "%s.rom", object_get_typename(OBJECT(pdev)));
}
pdev->has_rom = true;
- memory_region_init_ram(&pdev->rom, name, size);
+ memory_region_init_ram(&pdev->rom, OBJECT(pdev), name, size);
vmstate_register_ram(&pdev->rom, &pdev->qdev);
ptr = memory_region_get_ram_ptr(&pdev->rom);
load_image(path, ptr);
for (i = offset; i < offset + size; i++) {
overlapping_cap = pci_find_capability_at_offset(pdev, i);
if (overlapping_cap) {
- fprintf(stderr, "ERROR: %04x:%02x:%02x.%x "
+ fprintf(stderr, "ERROR: %s:%02x:%02x.%x "
"Attempt to add PCI capability %x at offset "
"%x overlaps existing capability %x at offset %x\n",
- pci_find_domain(pdev->bus), pci_bus_num(pdev->bus),
+ pci_root_bus_path(pdev), pci_bus_num(pdev->bus),
PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn),
cap_id, offset, overlapping_cap, i);
return -EINVAL;
* domain:Bus:Slot.Func for systems without nested PCI bridges.
* Slot.Function list specifies the slot and function numbers for all
* devices on the path from root to the specific device. */
- char domain[] = "DDDD:00";
+ const char *root_bus_path;
+ int root_bus_len;
char slot[] = ":SS.F";
- int domain_len = sizeof domain - 1 /* For '\0' */;
int slot_len = sizeof slot - 1 /* For '\0' */;
int path_len;
char *path, *p;
int s;
+ root_bus_path = pci_root_bus_path(d);
+ root_bus_len = strlen(root_bus_path);
+
/* Calculate # of slots on path between device and root. */;
slot_depth = 0;
for (t = d; t; t = t->bus->parent_dev) {
++slot_depth;
}
- path_len = domain_len + slot_len * slot_depth;
+ path_len = root_bus_len + slot_len * slot_depth;
/* Allocate memory, fill in the terminating null byte. */
path = g_malloc(path_len + 1 /* For '\0' */);
path[path_len] = '\0';
- /* First field is the domain. */
- s = snprintf(domain, sizeof domain, "%04x:00", pci_find_domain(d->bus));
- assert(s == domain_len);
- memcpy(path, domain, domain_len);
+ memcpy(path, root_bus_path, root_bus_len);
/* Fill in slot numbers. We walk up from device to root, so need to print
* them in the reverse order, last to first. */
int pci_qdev_find_device(const char *id, PCIDevice **pdev)
{
- struct PCIHostBus *host;
+ PCIHostState *host_bridge;
int rc = -ENODEV;
- QLIST_FOREACH(host, &host_buses, next) {
- int tmp = pci_qdev_find_recursive(host->bus, id, pdev);
+ QLIST_FOREACH(host_bridge, &pci_host_bridges, next) {
+ int tmp = pci_qdev_find_recursive(host_bridge->bus, id, pdev);
if (!tmp) {
rc = 0;
break;
projects / qemu.git / blobdiff