root / hw / pci.c @ a9f49946
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/*
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* QEMU PCI bus manager
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*
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* Copyright (c) 2004 Fabrice Bellard
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "hw.h" |
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#include "pci.h" |
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#include "pci_host.h" |
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#include "monitor.h" |
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#include "net.h" |
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#include "sysemu.h" |
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|
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//#define DEBUG_PCI
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#ifdef DEBUG_PCI
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# define PCI_DPRINTF(format, ...) printf(format, ## __VA_ARGS__) |
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#else
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# define PCI_DPRINTF(format, ...) do { } while (0) |
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#endif
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struct PCIBus {
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BusState qbus; |
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int devfn_min;
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pci_set_irq_fn set_irq; |
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pci_map_irq_fn map_irq; |
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pci_hotplug_fn hotplug; |
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uint32_t config_reg; /* XXX: suppress */
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void *irq_opaque;
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PCIDevice *devices[256];
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PCIDevice *parent_dev; |
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|
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QLIST_HEAD(, PCIBus) child; /* this will be replaced by qdev later */
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QLIST_ENTRY(PCIBus) sibling;/* this will be replaced by qdev later */
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/* The bus IRQ state is the logical OR of the connected devices.
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Keep a count of the number of devices with raised IRQs. */
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int nirq;
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int *irq_count;
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}; |
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|
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static void pcibus_dev_print(Monitor *mon, DeviceState *dev, int indent); |
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static struct BusInfo pci_bus_info = { |
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.name = "PCI",
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.size = sizeof(PCIBus),
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.print_dev = pcibus_dev_print, |
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.props = (Property[]) {
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DEFINE_PROP_PCI_DEVFN("addr", PCIDevice, devfn, -1), |
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DEFINE_PROP_END_OF_LIST() |
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} |
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}; |
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static void pci_update_mappings(PCIDevice *d); |
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static void pci_set_irq(void *opaque, int irq_num, int level); |
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target_phys_addr_t pci_mem_base; |
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static uint16_t pci_default_sub_vendor_id = PCI_SUBVENDOR_ID_REDHAT_QUMRANET;
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static uint16_t pci_default_sub_device_id = PCI_SUBDEVICE_ID_QEMU;
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struct PCIHostBus {
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int domain;
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struct PCIBus *bus;
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QLIST_ENTRY(PCIHostBus) next; |
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}; |
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static QLIST_HEAD(, PCIHostBus) host_buses;
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static const VMStateDescription vmstate_pcibus = { |
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.name = "PCIBUS",
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.version_id = 1,
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.minimum_version_id = 1,
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.minimum_version_id_old = 1,
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.fields = (VMStateField []) {
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VMSTATE_INT32_EQUAL(nirq, PCIBus), |
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VMSTATE_VARRAY_INT32(irq_count, PCIBus, nirq, 0, vmstate_info_int32, int32_t),
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VMSTATE_END_OF_LIST() |
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} |
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}; |
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static int pci_bar(PCIDevice *d, int reg) |
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{
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uint8_t type; |
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if (reg != PCI_ROM_SLOT)
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return PCI_BASE_ADDRESS_0 + reg * 4; |
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type = d->config[PCI_HEADER_TYPE] & ~PCI_HEADER_TYPE_MULTI_FUNCTION; |
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return type == PCI_HEADER_TYPE_BRIDGE ? PCI_ROM_ADDRESS1 : PCI_ROM_ADDRESS;
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} |
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static void pci_device_reset(PCIDevice *dev) |
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{
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int r;
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memset(dev->irq_state, 0, sizeof dev->irq_state); |
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dev->config[PCI_COMMAND] &= ~(PCI_COMMAND_IO | PCI_COMMAND_MEMORY | |
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PCI_COMMAND_MASTER); |
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dev->config[PCI_CACHE_LINE_SIZE] = 0x0;
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dev->config[PCI_INTERRUPT_LINE] = 0x0;
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for (r = 0; r < PCI_NUM_REGIONS; ++r) { |
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if (!dev->io_regions[r].size) {
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continue;
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} |
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pci_set_long(dev->config + pci_bar(dev, r), dev->io_regions[r].type); |
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} |
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pci_update_mappings(dev); |
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} |
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static void pci_bus_reset(void *opaque) |
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{
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PCIBus *bus = opaque; |
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int i;
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for (i = 0; i < bus->nirq; i++) { |
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bus->irq_count[i] = 0;
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} |
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for (i = 0; i < ARRAY_SIZE(bus->devices); ++i) { |
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if (bus->devices[i]) {
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pci_device_reset(bus->devices[i]); |
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} |
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} |
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} |
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static void pci_host_bus_register(int domain, PCIBus *bus) |
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{
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struct PCIHostBus *host;
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host = qemu_mallocz(sizeof(*host));
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host->domain = domain; |
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host->bus = bus; |
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QLIST_INSERT_HEAD(&host_buses, host, next); |
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} |
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PCIBus *pci_find_host_bus(int domain)
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{
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struct PCIHostBus *host;
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QLIST_FOREACH(host, &host_buses, next) {
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if (host->domain == domain) {
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return host->bus;
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} |
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} |
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return NULL; |
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} |
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void pci_bus_new_inplace(PCIBus *bus, DeviceState *parent,
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const char *name, int devfn_min) |
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{
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static int nbus = 0; |
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qbus_create_inplace(&bus->qbus, &pci_bus_info, parent, name); |
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bus->devfn_min = devfn_min; |
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/* host bridge */
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QLIST_INIT(&bus->child); |
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pci_host_bus_register(0, bus); /* for now only pci domain 0 is supported */ |
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vmstate_register(nbus++, &vmstate_pcibus, bus); |
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qemu_register_reset(pci_bus_reset, bus); |
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} |
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PCIBus *pci_bus_new(DeviceState *parent, const char *name, int devfn_min) |
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{
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PCIBus *bus; |
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bus = qemu_mallocz(sizeof(*bus));
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bus->qbus.qdev_allocated = 1;
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pci_bus_new_inplace(bus, parent, name, devfn_min); |
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return bus;
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} |
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void pci_bus_irqs(PCIBus *bus, pci_set_irq_fn set_irq, pci_map_irq_fn map_irq,
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void *irq_opaque, int nirq) |
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{
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bus->set_irq = set_irq; |
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bus->map_irq = map_irq; |
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bus->irq_opaque = irq_opaque; |
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bus->nirq = nirq; |
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bus->irq_count = qemu_mallocz(nirq * sizeof(bus->irq_count[0])); |
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} |
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void pci_bus_hotplug(PCIBus *bus, pci_hotplug_fn hotplug)
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{
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bus->qbus.allow_hotplug = 1;
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bus->hotplug = hotplug; |
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} |
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PCIBus *pci_register_bus(DeviceState *parent, const char *name, |
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pci_set_irq_fn set_irq, pci_map_irq_fn map_irq, |
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void *irq_opaque, int devfn_min, int nirq) |
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{
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PCIBus *bus; |
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bus = pci_bus_new(parent, name, devfn_min); |
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pci_bus_irqs(bus, set_irq, map_irq, irq_opaque, nirq); |
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return bus;
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} |
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static void pci_register_secondary_bus(PCIBus *parent, |
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PCIBus *bus, |
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PCIDevice *dev, |
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pci_map_irq_fn map_irq, |
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const char *name) |
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{
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qbus_create_inplace(&bus->qbus, &pci_bus_info, &dev->qdev, name); |
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bus->map_irq = map_irq; |
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bus->parent_dev = dev; |
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QLIST_INIT(&bus->child); |
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QLIST_INSERT_HEAD(&parent->child, bus, sibling); |
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} |
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static void pci_unregister_secondary_bus(PCIBus *bus) |
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{
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assert(QLIST_EMPTY(&bus->child)); |
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QLIST_REMOVE(bus, sibling); |
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} |
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int pci_bus_num(PCIBus *s)
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{
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if (!s->parent_dev)
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return 0; /* pci host bridge */ |
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return s->parent_dev->config[PCI_SECONDARY_BUS];
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} |
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static uint8_t pci_sub_bus(PCIBus *s)
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{
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if (!s->parent_dev)
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return 255; /* pci host bridge */ |
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return s->parent_dev->config[PCI_SUBORDINATE_BUS];
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} |
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static int get_pci_config_device(QEMUFile *f, void *pv, size_t size) |
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{
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PCIDevice *s = container_of(pv, PCIDevice, config); |
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uint8_t *config; |
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int i;
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assert(size == pci_config_size(s)); |
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config = qemu_malloc(size); |
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qemu_get_buffer(f, config, size); |
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for (i = 0; i < size; ++i) { |
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if ((config[i] ^ s->config[i]) & s->cmask[i] & ~s->wmask[i]) {
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qemu_free(config); |
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return -EINVAL;
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} |
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} |
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memcpy(s->config, config, size); |
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pci_update_mappings(s); |
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qemu_free(config); |
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return 0; |
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} |
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|
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/* just put buffer */
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static void put_pci_config_device(QEMUFile *f, void *pv, size_t size) |
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{
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const uint8_t *v = pv;
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assert(size == pci_config_size(container_of(pv, PCIDevice, config))); |
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qemu_put_buffer(f, v, size); |
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} |
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static VMStateInfo vmstate_info_pci_config = {
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.name = "pci config",
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.get = get_pci_config_device, |
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.put = put_pci_config_device, |
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}; |
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const VMStateDescription vmstate_pci_device = {
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.name = "PCIDevice",
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.version_id = 2,
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.minimum_version_id = 1,
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.minimum_version_id_old = 1,
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.fields = (VMStateField []) {
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VMSTATE_INT32_LE(version_id, PCIDevice), |
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VMSTATE_BUFFER_UNSAFE_INFO(config, PCIDevice, 0,
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vmstate_info_pci_config, |
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PCI_CONFIG_SPACE_SIZE), |
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VMSTATE_INT32_ARRAY_V(irq_state, PCIDevice, PCI_NUM_PINS, 2),
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VMSTATE_END_OF_LIST() |
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} |
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}; |
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|
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const VMStateDescription vmstate_pcie_device = {
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.name = "PCIDevice",
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.version_id = 2,
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.minimum_version_id = 1,
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.minimum_version_id_old = 1,
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.fields = (VMStateField []) {
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VMSTATE_INT32_LE(version_id, PCIDevice), |
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VMSTATE_BUFFER_UNSAFE_INFO(config, PCIDevice, 0,
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vmstate_info_pci_config, |
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PCIE_CONFIG_SPACE_SIZE), |
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VMSTATE_INT32_ARRAY_V(irq_state, PCIDevice, PCI_NUM_PINS, 2),
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VMSTATE_END_OF_LIST() |
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} |
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}; |
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|
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static inline const VMStateDescription *pci_get_vmstate(PCIDevice *s) |
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{
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return pci_is_express(s) ? &vmstate_pcie_device : &vmstate_pci_device;
|
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} |
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|
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void pci_device_save(PCIDevice *s, QEMUFile *f)
|
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{
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vmstate_save_state(f, pci_get_vmstate(s), s); |
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} |
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|
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int pci_device_load(PCIDevice *s, QEMUFile *f)
|
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{
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return vmstate_load_state(f, pci_get_vmstate(s), s, s->version_id);
|
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} |
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|
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static int pci_set_default_subsystem_id(PCIDevice *pci_dev) |
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{
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uint16_t *id; |
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id = (void*)(&pci_dev->config[PCI_SUBVENDOR_ID]);
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id[0] = cpu_to_le16(pci_default_sub_vendor_id);
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id[1] = cpu_to_le16(pci_default_sub_device_id);
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return 0; |
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} |
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|
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/*
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* Parse [[<domain>:]<bus>:]<slot>, return -1 on error
|
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*/
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static int pci_parse_devaddr(const char *addr, int *domp, int *busp, unsigned *slotp) |
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{
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const char *p; |
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char *e;
|
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unsigned long val; |
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unsigned long dom = 0, bus = 0; |
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unsigned slot = 0; |
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|
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p = addr; |
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val = strtoul(p, &e, 16);
|
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if (e == p)
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return -1; |
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if (*e == ':') { |
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bus = val; |
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p = e + 1;
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val = strtoul(p, &e, 16);
|
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if (e == p)
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return -1; |
| 363 |
if (*e == ':') { |
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dom = bus; |
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bus = val; |
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p = e + 1;
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val = strtoul(p, &e, 16);
|
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if (e == p)
|
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return -1; |
| 370 |
} |
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} |
| 372 |
|
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if (dom > 0xffff || bus > 0xff || val > 0x1f) |
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return -1; |
| 375 |
|
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slot = val; |
| 377 |
|
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if (*e)
|
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return -1; |
| 380 |
|
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/* Note: QEMU doesn't implement domains other than 0 */
|
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if (!pci_find_bus(pci_find_host_bus(dom), bus))
|
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return -1; |
| 384 |
|
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*domp = dom; |
| 386 |
*busp = bus; |
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*slotp = slot; |
| 388 |
return 0; |
| 389 |
} |
| 390 |
|
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int pci_read_devaddr(Monitor *mon, const char *addr, int *domp, int *busp, |
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unsigned *slotp)
|
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{
|
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/* strip legacy tag */
|
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if (!strncmp(addr, "pci_addr=", 9)) { |
| 396 |
addr += 9;
|
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} |
| 398 |
if (pci_parse_devaddr(addr, domp, busp, slotp)) {
|
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monitor_printf(mon, "Invalid pci address\n");
|
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return -1; |
| 401 |
} |
| 402 |
return 0; |
| 403 |
} |
| 404 |
|
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PCIBus *pci_get_bus_devfn(int *devfnp, const char *devaddr) |
| 406 |
{
|
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int dom, bus;
|
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unsigned slot;
|
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|
| 410 |
if (!devaddr) {
|
| 411 |
*devfnp = -1;
|
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return pci_find_bus(pci_find_host_bus(0), 0); |
| 413 |
} |
| 414 |
|
| 415 |
if (pci_parse_devaddr(devaddr, &dom, &bus, &slot) < 0) { |
| 416 |
return NULL; |
| 417 |
} |
| 418 |
|
| 419 |
*devfnp = slot << 3;
|
| 420 |
return pci_find_bus(pci_find_host_bus(0), bus); |
| 421 |
} |
| 422 |
|
| 423 |
static void pci_init_cmask(PCIDevice *dev) |
| 424 |
{
|
| 425 |
pci_set_word(dev->cmask + PCI_VENDOR_ID, 0xffff);
|
| 426 |
pci_set_word(dev->cmask + PCI_DEVICE_ID, 0xffff);
|
| 427 |
dev->cmask[PCI_STATUS] = PCI_STATUS_CAP_LIST; |
| 428 |
dev->cmask[PCI_REVISION_ID] = 0xff;
|
| 429 |
dev->cmask[PCI_CLASS_PROG] = 0xff;
|
| 430 |
pci_set_word(dev->cmask + PCI_CLASS_DEVICE, 0xffff);
|
| 431 |
dev->cmask[PCI_HEADER_TYPE] = 0xff;
|
| 432 |
dev->cmask[PCI_CAPABILITY_LIST] = 0xff;
|
| 433 |
} |
| 434 |
|
| 435 |
static void pci_init_wmask(PCIDevice *dev) |
| 436 |
{
|
| 437 |
int i;
|
| 438 |
int config_size = pci_config_size(dev);
|
| 439 |
|
| 440 |
dev->wmask[PCI_CACHE_LINE_SIZE] = 0xff;
|
| 441 |
dev->wmask[PCI_INTERRUPT_LINE] = 0xff;
|
| 442 |
pci_set_word(dev->wmask + PCI_COMMAND, |
| 443 |
PCI_COMMAND_IO | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER); |
| 444 |
for (i = PCI_CONFIG_HEADER_SIZE; i < config_size; ++i)
|
| 445 |
dev->wmask[i] = 0xff;
|
| 446 |
} |
| 447 |
|
| 448 |
static void pci_config_alloc(PCIDevice *pci_dev) |
| 449 |
{
|
| 450 |
int config_size = pci_config_size(pci_dev);
|
| 451 |
|
| 452 |
pci_dev->config = qemu_mallocz(config_size); |
| 453 |
pci_dev->cmask = qemu_mallocz(config_size); |
| 454 |
pci_dev->wmask = qemu_mallocz(config_size); |
| 455 |
pci_dev->used = qemu_mallocz(config_size); |
| 456 |
} |
| 457 |
|
| 458 |
static void pci_config_free(PCIDevice *pci_dev) |
| 459 |
{
|
| 460 |
qemu_free(pci_dev->config); |
| 461 |
qemu_free(pci_dev->cmask); |
| 462 |
qemu_free(pci_dev->wmask); |
| 463 |
qemu_free(pci_dev->used); |
| 464 |
} |
| 465 |
|
| 466 |
/* -1 for devfn means auto assign */
|
| 467 |
static PCIDevice *do_pci_register_device(PCIDevice *pci_dev, PCIBus *bus,
|
| 468 |
const char *name, int devfn, |
| 469 |
PCIConfigReadFunc *config_read, |
| 470 |
PCIConfigWriteFunc *config_write) |
| 471 |
{
|
| 472 |
if (devfn < 0) { |
| 473 |
for(devfn = bus->devfn_min ; devfn < 256; devfn += 8) { |
| 474 |
if (!bus->devices[devfn])
|
| 475 |
goto found;
|
| 476 |
} |
| 477 |
return NULL; |
| 478 |
found: ;
|
| 479 |
} else if (bus->devices[devfn]) { |
| 480 |
return NULL; |
| 481 |
} |
| 482 |
pci_dev->bus = bus; |
| 483 |
pci_dev->devfn = devfn; |
| 484 |
pstrcpy(pci_dev->name, sizeof(pci_dev->name), name);
|
| 485 |
memset(pci_dev->irq_state, 0, sizeof(pci_dev->irq_state)); |
| 486 |
pci_config_alloc(pci_dev); |
| 487 |
pci_set_default_subsystem_id(pci_dev); |
| 488 |
pci_init_cmask(pci_dev); |
| 489 |
pci_init_wmask(pci_dev); |
| 490 |
|
| 491 |
if (!config_read)
|
| 492 |
config_read = pci_default_read_config; |
| 493 |
if (!config_write)
|
| 494 |
config_write = pci_default_write_config; |
| 495 |
pci_dev->config_read = config_read; |
| 496 |
pci_dev->config_write = config_write; |
| 497 |
bus->devices[devfn] = pci_dev; |
| 498 |
pci_dev->irq = qemu_allocate_irqs(pci_set_irq, pci_dev, PCI_NUM_PINS); |
| 499 |
pci_dev->version_id = 2; /* Current pci device vmstate version */ |
| 500 |
return pci_dev;
|
| 501 |
} |
| 502 |
|
| 503 |
PCIDevice *pci_register_device(PCIBus *bus, const char *name, |
| 504 |
int instance_size, int devfn, |
| 505 |
PCIConfigReadFunc *config_read, |
| 506 |
PCIConfigWriteFunc *config_write) |
| 507 |
{
|
| 508 |
PCIDevice *pci_dev; |
| 509 |
|
| 510 |
pci_dev = qemu_mallocz(instance_size); |
| 511 |
pci_dev = do_pci_register_device(pci_dev, bus, name, devfn, |
| 512 |
config_read, config_write); |
| 513 |
return pci_dev;
|
| 514 |
} |
| 515 |
static target_phys_addr_t pci_to_cpu_addr(target_phys_addr_t addr)
|
| 516 |
{
|
| 517 |
return addr + pci_mem_base;
|
| 518 |
} |
| 519 |
|
| 520 |
static void pci_unregister_io_regions(PCIDevice *pci_dev) |
| 521 |
{
|
| 522 |
PCIIORegion *r; |
| 523 |
int i;
|
| 524 |
|
| 525 |
for(i = 0; i < PCI_NUM_REGIONS; i++) { |
| 526 |
r = &pci_dev->io_regions[i]; |
| 527 |
if (!r->size || r->addr == PCI_BAR_UNMAPPED)
|
| 528 |
continue;
|
| 529 |
if (r->type == PCI_BASE_ADDRESS_SPACE_IO) {
|
| 530 |
isa_unassign_ioport(r->addr, r->size); |
| 531 |
} else {
|
| 532 |
cpu_register_physical_memory(pci_to_cpu_addr(r->addr), |
| 533 |
r->size, |
| 534 |
IO_MEM_UNASSIGNED); |
| 535 |
} |
| 536 |
} |
| 537 |
} |
| 538 |
|
| 539 |
static int pci_unregister_device(DeviceState *dev) |
| 540 |
{
|
| 541 |
PCIDevice *pci_dev = DO_UPCAST(PCIDevice, qdev, dev); |
| 542 |
PCIDeviceInfo *info = DO_UPCAST(PCIDeviceInfo, qdev, dev->info); |
| 543 |
int ret = 0; |
| 544 |
|
| 545 |
if (info->exit)
|
| 546 |
ret = info->exit(pci_dev); |
| 547 |
if (ret)
|
| 548 |
return ret;
|
| 549 |
|
| 550 |
pci_unregister_io_regions(pci_dev); |
| 551 |
|
| 552 |
qemu_free_irqs(pci_dev->irq); |
| 553 |
pci_dev->bus->devices[pci_dev->devfn] = NULL;
|
| 554 |
pci_config_free(pci_dev); |
| 555 |
return 0; |
| 556 |
} |
| 557 |
|
| 558 |
void pci_register_bar(PCIDevice *pci_dev, int region_num, |
| 559 |
pcibus_t size, int type,
|
| 560 |
PCIMapIORegionFunc *map_func) |
| 561 |
{
|
| 562 |
PCIIORegion *r; |
| 563 |
uint32_t addr; |
| 564 |
pcibus_t wmask; |
| 565 |
|
| 566 |
if ((unsigned int)region_num >= PCI_NUM_REGIONS) |
| 567 |
return;
|
| 568 |
|
| 569 |
if (size & (size-1)) { |
| 570 |
fprintf(stderr, "ERROR: PCI region size must be pow2 "
|
| 571 |
"type=0x%x, size=0x%"FMT_PCIBUS"\n", type, size); |
| 572 |
exit(1);
|
| 573 |
} |
| 574 |
|
| 575 |
r = &pci_dev->io_regions[region_num]; |
| 576 |
r->addr = PCI_BAR_UNMAPPED; |
| 577 |
r->size = size; |
| 578 |
r->type = type; |
| 579 |
r->map_func = map_func; |
| 580 |
|
| 581 |
wmask = ~(size - 1);
|
| 582 |
addr = pci_bar(pci_dev, region_num); |
| 583 |
if (region_num == PCI_ROM_SLOT) {
|
| 584 |
/* ROM enable bit is writeable */
|
| 585 |
wmask |= PCI_ROM_ADDRESS_ENABLE; |
| 586 |
} |
| 587 |
pci_set_long(pci_dev->config + addr, type); |
| 588 |
if (!(r->type & PCI_BASE_ADDRESS_SPACE_IO) &&
|
| 589 |
r->type & PCI_BASE_ADDRESS_MEM_TYPE_64) {
|
| 590 |
pci_set_quad(pci_dev->wmask + addr, wmask); |
| 591 |
pci_set_quad(pci_dev->cmask + addr, ~0ULL);
|
| 592 |
} else {
|
| 593 |
pci_set_long(pci_dev->wmask + addr, wmask & 0xffffffff);
|
| 594 |
pci_set_long(pci_dev->cmask + addr, 0xffffffff);
|
| 595 |
} |
| 596 |
} |
| 597 |
|
| 598 |
static void pci_update_mappings(PCIDevice *d) |
| 599 |
{
|
| 600 |
PCIIORegion *r; |
| 601 |
int cmd, i;
|
| 602 |
pcibus_t last_addr, new_addr; |
| 603 |
|
| 604 |
cmd = pci_get_word(d->config + PCI_COMMAND); |
| 605 |
for(i = 0; i < PCI_NUM_REGIONS; i++) { |
| 606 |
r = &d->io_regions[i]; |
| 607 |
if (r->size != 0) { |
| 608 |
if (r->type & PCI_BASE_ADDRESS_SPACE_IO) {
|
| 609 |
if (cmd & PCI_COMMAND_IO) {
|
| 610 |
new_addr = pci_get_long(d->config + pci_bar(d, i)); |
| 611 |
new_addr = new_addr & ~(r->size - 1);
|
| 612 |
last_addr = new_addr + r->size - 1;
|
| 613 |
/* NOTE: we have only 64K ioports on PC */
|
| 614 |
if (last_addr <= new_addr || new_addr == 0 || |
| 615 |
last_addr >= 0x10000) {
|
| 616 |
new_addr = PCI_BAR_UNMAPPED; |
| 617 |
} |
| 618 |
} else {
|
| 619 |
new_addr = PCI_BAR_UNMAPPED; |
| 620 |
} |
| 621 |
} else {
|
| 622 |
if (cmd & PCI_COMMAND_MEMORY) {
|
| 623 |
if (r->type & PCI_BASE_ADDRESS_MEM_TYPE_64) {
|
| 624 |
new_addr = pci_get_quad(d->config + pci_bar(d, i)); |
| 625 |
} else {
|
| 626 |
new_addr = pci_get_long(d->config + pci_bar(d, i)); |
| 627 |
} |
| 628 |
/* the ROM slot has a specific enable bit */
|
| 629 |
if (i == PCI_ROM_SLOT && !(new_addr & PCI_ROM_ADDRESS_ENABLE))
|
| 630 |
goto no_mem_map;
|
| 631 |
new_addr = new_addr & ~(r->size - 1);
|
| 632 |
last_addr = new_addr + r->size - 1;
|
| 633 |
/* NOTE: we do not support wrapping */
|
| 634 |
/* XXX: as we cannot support really dynamic
|
| 635 |
mappings, we handle specific values as invalid
|
| 636 |
mappings. */
|
| 637 |
if (last_addr <= new_addr || new_addr == 0 || |
| 638 |
last_addr == PCI_BAR_UNMAPPED || |
| 639 |
|
| 640 |
/* Now pcibus_t is 64bit.
|
| 641 |
* Check if 32 bit BAR wrap around explicitly.
|
| 642 |
* Without this, PC ide doesn't work well.
|
| 643 |
* TODO: remove this work around.
|
| 644 |
*/
|
| 645 |
(!(r->type & PCI_BASE_ADDRESS_MEM_TYPE_64) && |
| 646 |
last_addr >= UINT32_MAX) || |
| 647 |
|
| 648 |
/*
|
| 649 |
* OS is allowed to set BAR beyond its addressable
|
| 650 |
* bits. For example, 32 bit OS can set 64bit bar
|
| 651 |
* to >4G. Check it.
|
| 652 |
*/
|
| 653 |
last_addr >= TARGET_PHYS_ADDR_MAX) {
|
| 654 |
new_addr = PCI_BAR_UNMAPPED; |
| 655 |
} |
| 656 |
} else {
|
| 657 |
no_mem_map:
|
| 658 |
new_addr = PCI_BAR_UNMAPPED; |
| 659 |
} |
| 660 |
} |
| 661 |
/* now do the real mapping */
|
| 662 |
if (new_addr != r->addr) {
|
| 663 |
if (r->addr != PCI_BAR_UNMAPPED) {
|
| 664 |
if (r->type & PCI_BASE_ADDRESS_SPACE_IO) {
|
| 665 |
int class;
|
| 666 |
/* NOTE: specific hack for IDE in PC case:
|
| 667 |
only one byte must be mapped. */
|
| 668 |
class = pci_get_word(d->config + PCI_CLASS_DEVICE); |
| 669 |
if (class == 0x0101 && r->size == 4) { |
| 670 |
isa_unassign_ioport(r->addr + 2, 1); |
| 671 |
} else {
|
| 672 |
isa_unassign_ioport(r->addr, r->size); |
| 673 |
} |
| 674 |
} else {
|
| 675 |
cpu_register_physical_memory(pci_to_cpu_addr(r->addr), |
| 676 |
r->size, |
| 677 |
IO_MEM_UNASSIGNED); |
| 678 |
qemu_unregister_coalesced_mmio(r->addr, r->size); |
| 679 |
} |
| 680 |
} |
| 681 |
r->addr = new_addr; |
| 682 |
if (r->addr != PCI_BAR_UNMAPPED) {
|
| 683 |
r->map_func(d, i, r->addr, r->size, r->type); |
| 684 |
} |
| 685 |
} |
| 686 |
} |
| 687 |
} |
| 688 |
} |
| 689 |
|
| 690 |
uint32_t pci_default_read_config(PCIDevice *d, |
| 691 |
uint32_t address, int len)
|
| 692 |
{
|
| 693 |
uint32_t val = 0;
|
| 694 |
assert(len == 1 || len == 2 || len == 4); |
| 695 |
len = MIN(len, pci_config_size(d) - address); |
| 696 |
memcpy(&val, d->config + address, len); |
| 697 |
return le32_to_cpu(val);
|
| 698 |
} |
| 699 |
|
| 700 |
void pci_default_write_config(PCIDevice *d, uint32_t addr, uint32_t val, int l) |
| 701 |
{
|
| 702 |
uint8_t orig[PCI_CONFIG_SPACE_SIZE]; |
| 703 |
int i;
|
| 704 |
uint32_t config_size = pci_config_size(d); |
| 705 |
|
| 706 |
/* not efficient, but simple */
|
| 707 |
memcpy(orig, d->config, PCI_CONFIG_SPACE_SIZE); |
| 708 |
for(i = 0; i < l && addr < config_size; val >>= 8, ++i, ++addr) { |
| 709 |
uint8_t wmask = d->wmask[addr]; |
| 710 |
d->config[addr] = (d->config[addr] & ~wmask) | (val & wmask); |
| 711 |
} |
| 712 |
if (memcmp(orig + PCI_BASE_ADDRESS_0, d->config + PCI_BASE_ADDRESS_0, 24) |
| 713 |
|| ((orig[PCI_COMMAND] ^ d->config[PCI_COMMAND]) |
| 714 |
& (PCI_COMMAND_MEMORY | PCI_COMMAND_IO))) |
| 715 |
pci_update_mappings(d); |
| 716 |
} |
| 717 |
|
| 718 |
/***********************************************************/
|
| 719 |
/* generic PCI irq support */
|
| 720 |
|
| 721 |
/* 0 <= irq_num <= 3. level must be 0 or 1 */
|
| 722 |
static void pci_set_irq(void *opaque, int irq_num, int level) |
| 723 |
{
|
| 724 |
PCIDevice *pci_dev = opaque; |
| 725 |
PCIBus *bus; |
| 726 |
int change;
|
| 727 |
|
| 728 |
change = level - pci_dev->irq_state[irq_num]; |
| 729 |
if (!change)
|
| 730 |
return;
|
| 731 |
|
| 732 |
pci_dev->irq_state[irq_num] = level; |
| 733 |
for (;;) {
|
| 734 |
bus = pci_dev->bus; |
| 735 |
irq_num = bus->map_irq(pci_dev, irq_num); |
| 736 |
if (bus->set_irq)
|
| 737 |
break;
|
| 738 |
pci_dev = bus->parent_dev; |
| 739 |
} |
| 740 |
bus->irq_count[irq_num] += change; |
| 741 |
bus->set_irq(bus->irq_opaque, irq_num, bus->irq_count[irq_num] != 0);
|
| 742 |
} |
| 743 |
|
| 744 |
/***********************************************************/
|
| 745 |
/* monitor info on PCI */
|
| 746 |
|
| 747 |
typedef struct { |
| 748 |
uint16_t class; |
| 749 |
const char *desc; |
| 750 |
} pci_class_desc; |
| 751 |
|
| 752 |
static const pci_class_desc pci_class_descriptions[] = |
| 753 |
{
|
| 754 |
{ 0x0100, "SCSI controller"},
|
| 755 |
{ 0x0101, "IDE controller"},
|
| 756 |
{ 0x0102, "Floppy controller"},
|
| 757 |
{ 0x0103, "IPI controller"},
|
| 758 |
{ 0x0104, "RAID controller"},
|
| 759 |
{ 0x0106, "SATA controller"},
|
| 760 |
{ 0x0107, "SAS controller"},
|
| 761 |
{ 0x0180, "Storage controller"},
|
| 762 |
{ 0x0200, "Ethernet controller"},
|
| 763 |
{ 0x0201, "Token Ring controller"},
|
| 764 |
{ 0x0202, "FDDI controller"},
|
| 765 |
{ 0x0203, "ATM controller"},
|
| 766 |
{ 0x0280, "Network controller"},
|
| 767 |
{ 0x0300, "VGA controller"},
|
| 768 |
{ 0x0301, "XGA controller"},
|
| 769 |
{ 0x0302, "3D controller"},
|
| 770 |
{ 0x0380, "Display controller"},
|
| 771 |
{ 0x0400, "Video controller"},
|
| 772 |
{ 0x0401, "Audio controller"},
|
| 773 |
{ 0x0402, "Phone"},
|
| 774 |
{ 0x0480, "Multimedia controller"},
|
| 775 |
{ 0x0500, "RAM controller"},
|
| 776 |
{ 0x0501, "Flash controller"},
|
| 777 |
{ 0x0580, "Memory controller"},
|
| 778 |
{ 0x0600, "Host bridge"},
|
| 779 |
{ 0x0601, "ISA bridge"},
|
| 780 |
{ 0x0602, "EISA bridge"},
|
| 781 |
{ 0x0603, "MC bridge"},
|
| 782 |
{ 0x0604, "PCI bridge"},
|
| 783 |
{ 0x0605, "PCMCIA bridge"},
|
| 784 |
{ 0x0606, "NUBUS bridge"},
|
| 785 |
{ 0x0607, "CARDBUS bridge"},
|
| 786 |
{ 0x0608, "RACEWAY bridge"},
|
| 787 |
{ 0x0680, "Bridge"},
|
| 788 |
{ 0x0c03, "USB controller"},
|
| 789 |
{ 0, NULL}
|
| 790 |
}; |
| 791 |
|
| 792 |
static void pci_info_device(PCIBus *bus, PCIDevice *d) |
| 793 |
{
|
| 794 |
Monitor *mon = cur_mon; |
| 795 |
int i, class;
|
| 796 |
PCIIORegion *r; |
| 797 |
const pci_class_desc *desc;
|
| 798 |
|
| 799 |
monitor_printf(mon, " Bus %2d, device %3d, function %d:\n",
|
| 800 |
pci_bus_num(d->bus), |
| 801 |
PCI_SLOT(d->devfn), PCI_FUNC(d->devfn)); |
| 802 |
class = pci_get_word(d->config + PCI_CLASS_DEVICE); |
| 803 |
monitor_printf(mon, " ");
|
| 804 |
desc = pci_class_descriptions; |
| 805 |
while (desc->desc && class != desc->class)
|
| 806 |
desc++; |
| 807 |
if (desc->desc) {
|
| 808 |
monitor_printf(mon, "%s", desc->desc);
|
| 809 |
} else {
|
| 810 |
monitor_printf(mon, "Class %04x", class);
|
| 811 |
} |
| 812 |
monitor_printf(mon, ": PCI device %04x:%04x\n",
|
| 813 |
pci_get_word(d->config + PCI_VENDOR_ID), |
| 814 |
pci_get_word(d->config + PCI_DEVICE_ID)); |
| 815 |
|
| 816 |
if (d->config[PCI_INTERRUPT_PIN] != 0) { |
| 817 |
monitor_printf(mon, " IRQ %d.\n",
|
| 818 |
d->config[PCI_INTERRUPT_LINE]); |
| 819 |
} |
| 820 |
if (class == 0x0604) { |
| 821 |
monitor_printf(mon, " BUS %d.\n", d->config[0x19]); |
| 822 |
} |
| 823 |
for(i = 0;i < PCI_NUM_REGIONS; i++) { |
| 824 |
r = &d->io_regions[i]; |
| 825 |
if (r->size != 0) { |
| 826 |
monitor_printf(mon, " BAR%d: ", i);
|
| 827 |
if (r->type & PCI_BASE_ADDRESS_SPACE_IO) {
|
| 828 |
monitor_printf(mon, "I/O at 0x%04"FMT_PCIBUS
|
| 829 |
" [0x%04"FMT_PCIBUS"].\n", |
| 830 |
r->addr, r->addr + r->size - 1);
|
| 831 |
} else {
|
| 832 |
const char *type = r->type & PCI_BASE_ADDRESS_MEM_TYPE_64 ? |
| 833 |
"64 bit" : "32 bit"; |
| 834 |
const char *prefetch = |
| 835 |
r->type & PCI_BASE_ADDRESS_MEM_PREFETCH ? |
| 836 |
" prefetchable" : ""; |
| 837 |
|
| 838 |
monitor_printf(mon, "%s%s memory at 0x%08"FMT_PCIBUS
|
| 839 |
" [0x%08"FMT_PCIBUS"].\n", |
| 840 |
type, prefetch, |
| 841 |
r->addr, r->addr + r->size - 1);
|
| 842 |
} |
| 843 |
} |
| 844 |
} |
| 845 |
monitor_printf(mon, " id \"%s\"\n", d->qdev.id ? d->qdev.id : ""); |
| 846 |
if (class == 0x0604 && d->config[0x19] != 0) { |
| 847 |
pci_for_each_device(bus, d->config[0x19], pci_info_device);
|
| 848 |
} |
| 849 |
} |
| 850 |
|
| 851 |
void pci_for_each_device(PCIBus *bus, int bus_num, |
| 852 |
void (*fn)(PCIBus *b, PCIDevice *d))
|
| 853 |
{
|
| 854 |
PCIDevice *d; |
| 855 |
int devfn;
|
| 856 |
|
| 857 |
bus = pci_find_bus(bus, bus_num); |
| 858 |
if (bus) {
|
| 859 |
for(devfn = 0; devfn < 256; devfn++) { |
| 860 |
d = bus->devices[devfn]; |
| 861 |
if (d)
|
| 862 |
fn(bus, d); |
| 863 |
} |
| 864 |
} |
| 865 |
} |
| 866 |
|
| 867 |
void pci_info(Monitor *mon)
|
| 868 |
{
|
| 869 |
struct PCIHostBus *host;
|
| 870 |
QLIST_FOREACH(host, &host_buses, next) {
|
| 871 |
pci_for_each_device(host->bus, 0, pci_info_device);
|
| 872 |
} |
| 873 |
} |
| 874 |
|
| 875 |
static const char * const pci_nic_models[] = { |
| 876 |
"ne2k_pci",
|
| 877 |
"i82551",
|
| 878 |
"i82557b",
|
| 879 |
"i82559er",
|
| 880 |
"rtl8139",
|
| 881 |
"e1000",
|
| 882 |
"pcnet",
|
| 883 |
"virtio",
|
| 884 |
NULL
|
| 885 |
}; |
| 886 |
|
| 887 |
static const char * const pci_nic_names[] = { |
| 888 |
"ne2k_pci",
|
| 889 |
"i82551",
|
| 890 |
"i82557b",
|
| 891 |
"i82559er",
|
| 892 |
"rtl8139",
|
| 893 |
"e1000",
|
| 894 |
"pcnet",
|
| 895 |
"virtio-net-pci",
|
| 896 |
NULL
|
| 897 |
}; |
| 898 |
|
| 899 |
/* Initialize a PCI NIC. */
|
| 900 |
/* FIXME callers should check for failure, but don't */
|
| 901 |
PCIDevice *pci_nic_init(NICInfo *nd, const char *default_model, |
| 902 |
const char *default_devaddr) |
| 903 |
{
|
| 904 |
const char *devaddr = nd->devaddr ? nd->devaddr : default_devaddr; |
| 905 |
PCIBus *bus; |
| 906 |
int devfn;
|
| 907 |
PCIDevice *pci_dev; |
| 908 |
DeviceState *dev; |
| 909 |
int i;
|
| 910 |
|
| 911 |
i = qemu_find_nic_model(nd, pci_nic_models, default_model); |
| 912 |
if (i < 0) |
| 913 |
return NULL; |
| 914 |
|
| 915 |
bus = pci_get_bus_devfn(&devfn, devaddr); |
| 916 |
if (!bus) {
|
| 917 |
qemu_error("Invalid PCI device address %s for device %s\n",
|
| 918 |
devaddr, pci_nic_names[i]); |
| 919 |
return NULL; |
| 920 |
} |
| 921 |
|
| 922 |
pci_dev = pci_create(bus, devfn, pci_nic_names[i]); |
| 923 |
dev = &pci_dev->qdev; |
| 924 |
if (nd->name)
|
| 925 |
dev->id = qemu_strdup(nd->name); |
| 926 |
qdev_set_nic_properties(dev, nd); |
| 927 |
if (qdev_init(dev) < 0) |
| 928 |
return NULL; |
| 929 |
return pci_dev;
|
| 930 |
} |
| 931 |
|
| 932 |
PCIDevice *pci_nic_init_nofail(NICInfo *nd, const char *default_model, |
| 933 |
const char *default_devaddr) |
| 934 |
{
|
| 935 |
PCIDevice *res; |
| 936 |
|
| 937 |
if (qemu_show_nic_models(nd->model, pci_nic_models))
|
| 938 |
exit(0);
|
| 939 |
|
| 940 |
res = pci_nic_init(nd, default_model, default_devaddr); |
| 941 |
if (!res)
|
| 942 |
exit(1);
|
| 943 |
return res;
|
| 944 |
} |
| 945 |
|
| 946 |
typedef struct { |
| 947 |
PCIDevice dev; |
| 948 |
PCIBus bus; |
| 949 |
uint32_t vid; |
| 950 |
uint32_t did; |
| 951 |
} PCIBridge; |
| 952 |
|
| 953 |
static void pci_bridge_write_config(PCIDevice *d, |
| 954 |
uint32_t address, uint32_t val, int len)
|
| 955 |
{
|
| 956 |
pci_default_write_config(d, address, val, len); |
| 957 |
} |
| 958 |
|
| 959 |
PCIBus *pci_find_bus(PCIBus *bus, int bus_num)
|
| 960 |
{
|
| 961 |
PCIBus *sec; |
| 962 |
|
| 963 |
if (!bus)
|
| 964 |
return NULL; |
| 965 |
|
| 966 |
if (pci_bus_num(bus) == bus_num) {
|
| 967 |
return bus;
|
| 968 |
} |
| 969 |
|
| 970 |
/* try child bus */
|
| 971 |
QLIST_FOREACH(sec, &bus->child, sibling) {
|
| 972 |
if (pci_bus_num(sec) <= bus_num && bus_num <= pci_sub_bus(sec)) {
|
| 973 |
return pci_find_bus(sec, bus_num);
|
| 974 |
} |
| 975 |
} |
| 976 |
|
| 977 |
return NULL; |
| 978 |
} |
| 979 |
|
| 980 |
PCIDevice *pci_find_device(PCIBus *bus, int bus_num, int slot, int function) |
| 981 |
{
|
| 982 |
bus = pci_find_bus(bus, bus_num); |
| 983 |
|
| 984 |
if (!bus)
|
| 985 |
return NULL; |
| 986 |
|
| 987 |
return bus->devices[PCI_DEVFN(slot, function)];
|
| 988 |
} |
| 989 |
|
| 990 |
static int pci_bridge_initfn(PCIDevice *dev) |
| 991 |
{
|
| 992 |
PCIBridge *s = DO_UPCAST(PCIBridge, dev, dev); |
| 993 |
|
| 994 |
pci_config_set_vendor_id(s->dev.config, s->vid); |
| 995 |
pci_config_set_device_id(s->dev.config, s->did); |
| 996 |
|
| 997 |
/* TODO: intial value
|
| 998 |
* command register:
|
| 999 |
* According to PCI bridge spec, after reset
|
| 1000 |
* bus master bit is off
|
| 1001 |
* memory space enable bit is off
|
| 1002 |
* According to manual (805-1251.pdf).(See abp_pbi.c for its links.)
|
| 1003 |
* the reset value should be zero unless the boot pin is tied high
|
| 1004 |
* (which is tru) and thus it should be PCI_COMMAND_MEMORY.
|
| 1005 |
*
|
| 1006 |
* For now, don't touch the value.
|
| 1007 |
* Later command register will be set to zero and apb_pci.c will
|
| 1008 |
* override the value.
|
| 1009 |
* Same for latency timer, and multi function bit of header type.
|
| 1010 |
*/
|
| 1011 |
pci_set_word(dev->config + PCI_COMMAND, |
| 1012 |
PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER); |
| 1013 |
|
| 1014 |
pci_set_word(dev->config + PCI_STATUS, |
| 1015 |
PCI_STATUS_66MHZ | PCI_STATUS_FAST_BACK); |
| 1016 |
pci_config_set_class(dev->config, PCI_CLASS_BRIDGE_PCI); |
| 1017 |
dev->config[PCI_LATENCY_TIMER] = 0x10;
|
| 1018 |
dev->config[PCI_HEADER_TYPE] = |
| 1019 |
PCI_HEADER_TYPE_MULTI_FUNCTION | PCI_HEADER_TYPE_BRIDGE; |
| 1020 |
pci_set_word(dev->config + PCI_SEC_STATUS, |
| 1021 |
PCI_STATUS_66MHZ | PCI_STATUS_FAST_BACK); |
| 1022 |
return 0; |
| 1023 |
} |
| 1024 |
|
| 1025 |
static int pci_bridge_exitfn(PCIDevice *pci_dev) |
| 1026 |
{
|
| 1027 |
PCIBridge *s = DO_UPCAST(PCIBridge, dev, pci_dev); |
| 1028 |
PCIBus *bus = &s->bus; |
| 1029 |
pci_unregister_secondary_bus(bus); |
| 1030 |
return 0; |
| 1031 |
} |
| 1032 |
|
| 1033 |
PCIBus *pci_bridge_init(PCIBus *bus, int devfn, uint16_t vid, uint16_t did,
|
| 1034 |
pci_map_irq_fn map_irq, const char *name) |
| 1035 |
{
|
| 1036 |
PCIDevice *dev; |
| 1037 |
PCIBridge *s; |
| 1038 |
|
| 1039 |
dev = pci_create(bus, devfn, "pci-bridge");
|
| 1040 |
qdev_prop_set_uint32(&dev->qdev, "vendorid", vid);
|
| 1041 |
qdev_prop_set_uint32(&dev->qdev, "deviceid", did);
|
| 1042 |
qdev_init_nofail(&dev->qdev); |
| 1043 |
|
| 1044 |
s = DO_UPCAST(PCIBridge, dev, dev); |
| 1045 |
pci_register_secondary_bus(bus, &s->bus, &s->dev, map_irq, name); |
| 1046 |
return &s->bus;
|
| 1047 |
} |
| 1048 |
|
| 1049 |
static int pci_qdev_init(DeviceState *qdev, DeviceInfo *base) |
| 1050 |
{
|
| 1051 |
PCIDevice *pci_dev = (PCIDevice *)qdev; |
| 1052 |
PCIDeviceInfo *info = container_of(base, PCIDeviceInfo, qdev); |
| 1053 |
PCIBus *bus; |
| 1054 |
int devfn, rc;
|
| 1055 |
|
| 1056 |
/* initialize cap_present for pci_is_express() and pci_config_size() */
|
| 1057 |
if (info->is_express) {
|
| 1058 |
pci_dev->cap_present |= QEMU_PCI_CAP_EXPRESS; |
| 1059 |
} |
| 1060 |
|
| 1061 |
bus = FROM_QBUS(PCIBus, qdev_get_parent_bus(qdev)); |
| 1062 |
devfn = pci_dev->devfn; |
| 1063 |
pci_dev = do_pci_register_device(pci_dev, bus, base->name, devfn, |
| 1064 |
info->config_read, info->config_write); |
| 1065 |
assert(pci_dev); |
| 1066 |
rc = info->init(pci_dev); |
| 1067 |
if (rc != 0) |
| 1068 |
return rc;
|
| 1069 |
if (qdev->hotplugged)
|
| 1070 |
bus->hotplug(pci_dev, 1);
|
| 1071 |
return 0; |
| 1072 |
} |
| 1073 |
|
| 1074 |
static int pci_unplug_device(DeviceState *qdev) |
| 1075 |
{
|
| 1076 |
PCIDevice *dev = DO_UPCAST(PCIDevice, qdev, qdev); |
| 1077 |
|
| 1078 |
dev->bus->hotplug(dev, 0);
|
| 1079 |
return 0; |
| 1080 |
} |
| 1081 |
|
| 1082 |
void pci_qdev_register(PCIDeviceInfo *info)
|
| 1083 |
{
|
| 1084 |
info->qdev.init = pci_qdev_init; |
| 1085 |
info->qdev.unplug = pci_unplug_device; |
| 1086 |
info->qdev.exit = pci_unregister_device; |
| 1087 |
info->qdev.bus_info = &pci_bus_info; |
| 1088 |
qdev_register(&info->qdev); |
| 1089 |
} |
| 1090 |
|
| 1091 |
void pci_qdev_register_many(PCIDeviceInfo *info)
|
| 1092 |
{
|
| 1093 |
while (info->qdev.name) {
|
| 1094 |
pci_qdev_register(info); |
| 1095 |
info++; |
| 1096 |
} |
| 1097 |
} |
| 1098 |
|
| 1099 |
PCIDevice *pci_create(PCIBus *bus, int devfn, const char *name) |
| 1100 |
{
|
| 1101 |
DeviceState *dev; |
| 1102 |
|
| 1103 |
dev = qdev_create(&bus->qbus, name); |
| 1104 |
qdev_prop_set_uint32(dev, "addr", devfn);
|
| 1105 |
return DO_UPCAST(PCIDevice, qdev, dev);
|
| 1106 |
} |
| 1107 |
|
| 1108 |
PCIDevice *pci_create_simple(PCIBus *bus, int devfn, const char *name) |
| 1109 |
{
|
| 1110 |
PCIDevice *dev = pci_create(bus, devfn, name); |
| 1111 |
qdev_init_nofail(&dev->qdev); |
| 1112 |
return dev;
|
| 1113 |
} |
| 1114 |
|
| 1115 |
static int pci_find_space(PCIDevice *pdev, uint8_t size) |
| 1116 |
{
|
| 1117 |
int config_size = pci_config_size(pdev);
|
| 1118 |
int offset = PCI_CONFIG_HEADER_SIZE;
|
| 1119 |
int i;
|
| 1120 |
for (i = PCI_CONFIG_HEADER_SIZE; i < config_size; ++i)
|
| 1121 |
if (pdev->used[i])
|
| 1122 |
offset = i + 1;
|
| 1123 |
else if (i - offset + 1 == size) |
| 1124 |
return offset;
|
| 1125 |
return 0; |
| 1126 |
} |
| 1127 |
|
| 1128 |
static uint8_t pci_find_capability_list(PCIDevice *pdev, uint8_t cap_id,
|
| 1129 |
uint8_t *prev_p) |
| 1130 |
{
|
| 1131 |
uint8_t next, prev; |
| 1132 |
|
| 1133 |
if (!(pdev->config[PCI_STATUS] & PCI_STATUS_CAP_LIST))
|
| 1134 |
return 0; |
| 1135 |
|
| 1136 |
for (prev = PCI_CAPABILITY_LIST; (next = pdev->config[prev]);
|
| 1137 |
prev = next + PCI_CAP_LIST_NEXT) |
| 1138 |
if (pdev->config[next + PCI_CAP_LIST_ID] == cap_id)
|
| 1139 |
break;
|
| 1140 |
|
| 1141 |
if (prev_p)
|
| 1142 |
*prev_p = prev; |
| 1143 |
return next;
|
| 1144 |
} |
| 1145 |
|
| 1146 |
/* Reserve space and add capability to the linked list in pci config space */
|
| 1147 |
int pci_add_capability(PCIDevice *pdev, uint8_t cap_id, uint8_t size)
|
| 1148 |
{
|
| 1149 |
uint8_t offset = pci_find_space(pdev, size); |
| 1150 |
uint8_t *config = pdev->config + offset; |
| 1151 |
if (!offset)
|
| 1152 |
return -ENOSPC;
|
| 1153 |
config[PCI_CAP_LIST_ID] = cap_id; |
| 1154 |
config[PCI_CAP_LIST_NEXT] = pdev->config[PCI_CAPABILITY_LIST]; |
| 1155 |
pdev->config[PCI_CAPABILITY_LIST] = offset; |
| 1156 |
pdev->config[PCI_STATUS] |= PCI_STATUS_CAP_LIST; |
| 1157 |
memset(pdev->used + offset, 0xFF, size);
|
| 1158 |
/* Make capability read-only by default */
|
| 1159 |
memset(pdev->wmask + offset, 0, size);
|
| 1160 |
/* Check capability by default */
|
| 1161 |
memset(pdev->cmask + offset, 0xFF, size);
|
| 1162 |
return offset;
|
| 1163 |
} |
| 1164 |
|
| 1165 |
/* Unlink capability from the pci config space. */
|
| 1166 |
void pci_del_capability(PCIDevice *pdev, uint8_t cap_id, uint8_t size)
|
| 1167 |
{
|
| 1168 |
uint8_t prev, offset = pci_find_capability_list(pdev, cap_id, &prev); |
| 1169 |
if (!offset)
|
| 1170 |
return;
|
| 1171 |
pdev->config[prev] = pdev->config[offset + PCI_CAP_LIST_NEXT]; |
| 1172 |
/* Make capability writeable again */
|
| 1173 |
memset(pdev->wmask + offset, 0xff, size);
|
| 1174 |
/* Clear cmask as device-specific registers can't be checked */
|
| 1175 |
memset(pdev->cmask + offset, 0, size);
|
| 1176 |
memset(pdev->used + offset, 0, size);
|
| 1177 |
|
| 1178 |
if (!pdev->config[PCI_CAPABILITY_LIST])
|
| 1179 |
pdev->config[PCI_STATUS] &= ~PCI_STATUS_CAP_LIST; |
| 1180 |
} |
| 1181 |
|
| 1182 |
/* Reserve space for capability at a known offset (to call after load). */
|
| 1183 |
void pci_reserve_capability(PCIDevice *pdev, uint8_t offset, uint8_t size)
|
| 1184 |
{
|
| 1185 |
memset(pdev->used + offset, 0xff, size);
|
| 1186 |
} |
| 1187 |
|
| 1188 |
uint8_t pci_find_capability(PCIDevice *pdev, uint8_t cap_id) |
| 1189 |
{
|
| 1190 |
return pci_find_capability_list(pdev, cap_id, NULL); |
| 1191 |
} |
| 1192 |
|
| 1193 |
static void pcibus_dev_print(Monitor *mon, DeviceState *dev, int indent) |
| 1194 |
{
|
| 1195 |
PCIDevice *d = (PCIDevice *)dev; |
| 1196 |
const pci_class_desc *desc;
|
| 1197 |
char ctxt[64]; |
| 1198 |
PCIIORegion *r; |
| 1199 |
int i, class;
|
| 1200 |
|
| 1201 |
class = pci_get_word(d->config + PCI_CLASS_DEVICE); |
| 1202 |
desc = pci_class_descriptions; |
| 1203 |
while (desc->desc && class != desc->class)
|
| 1204 |
desc++; |
| 1205 |
if (desc->desc) {
|
| 1206 |
snprintf(ctxt, sizeof(ctxt), "%s", desc->desc); |
| 1207 |
} else {
|
| 1208 |
snprintf(ctxt, sizeof(ctxt), "Class %04x", class); |
| 1209 |
} |
| 1210 |
|
| 1211 |
monitor_printf(mon, "%*sclass %s, addr %02x:%02x.%x, "
|
| 1212 |
"pci id %04x:%04x (sub %04x:%04x)\n",
|
| 1213 |
indent, "", ctxt,
|
| 1214 |
d->config[PCI_SECONDARY_BUS], |
| 1215 |
PCI_SLOT(d->devfn), PCI_FUNC(d->devfn), |
| 1216 |
pci_get_word(d->config + PCI_VENDOR_ID), |
| 1217 |
pci_get_word(d->config + PCI_DEVICE_ID), |
| 1218 |
pci_get_word(d->config + PCI_SUBSYSTEM_VENDOR_ID), |
| 1219 |
pci_get_word(d->config + PCI_SUBSYSTEM_ID)); |
| 1220 |
for (i = 0; i < PCI_NUM_REGIONS; i++) { |
| 1221 |
r = &d->io_regions[i]; |
| 1222 |
if (!r->size)
|
| 1223 |
continue;
|
| 1224 |
monitor_printf(mon, "%*sbar %d: %s at 0x%"FMT_PCIBUS
|
| 1225 |
" [0x%"FMT_PCIBUS"]\n", |
| 1226 |
indent, "",
|
| 1227 |
i, r->type & PCI_BASE_ADDRESS_SPACE_IO ? "i/o" : "mem", |
| 1228 |
r->addr, r->addr + r->size - 1);
|
| 1229 |
} |
| 1230 |
} |
| 1231 |
|
| 1232 |
static PCIDeviceInfo bridge_info = {
|
| 1233 |
.qdev.name = "pci-bridge",
|
| 1234 |
.qdev.size = sizeof(PCIBridge),
|
| 1235 |
.init = pci_bridge_initfn, |
| 1236 |
.exit = pci_bridge_exitfn, |
| 1237 |
.config_write = pci_bridge_write_config, |
| 1238 |
.qdev.props = (Property[]) {
|
| 1239 |
DEFINE_PROP_HEX32("vendorid", PCIBridge, vid, 0), |
| 1240 |
DEFINE_PROP_HEX32("deviceid", PCIBridge, did, 0), |
| 1241 |
DEFINE_PROP_END_OF_LIST(), |
| 1242 |
} |
| 1243 |
}; |
| 1244 |
|
| 1245 |
static void pci_register_devices(void) |
| 1246 |
{
|
| 1247 |
pci_qdev_register(&bridge_info); |
| 1248 |
} |
| 1249 |
|
| 1250 |
device_init(pci_register_devices) |