mirror of https://gitee.com/openkylin/qemu.git
1147 lines
33 KiB
C
1147 lines
33 KiB
C
/*
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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 "monitor.h"
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#include "net.h"
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#include "sysemu.h"
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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 bus_num;
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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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PCIBus *next;
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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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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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static PCIBus *first_bus;
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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 inline int pci_bar(int reg)
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{
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return reg == PCI_ROM_SLOT ? PCI_ROM_ADDRESS : PCI_BASE_ADDRESS_0 + reg * 4;
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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(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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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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bus->next = first_bus;
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first_bus = bus;
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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 *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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bus->next = dev->bus->next;
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dev->bus->next = bus;
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}
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int pci_bus_num(PCIBus *s)
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{
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return s->bus_num;
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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[PCI_CONFIG_SPACE_SIZE];
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int i;
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assert(size == sizeof config);
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qemu_get_buffer(f, config, sizeof config);
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for (i = 0; i < sizeof config; ++i)
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if ((config[i] ^ s->config[i]) & s->cmask[i] & ~s->wmask[i])
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return -EINVAL;
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memcpy(s->config, config, sizeof config);
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pci_update_mappings(s);
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return 0;
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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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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_SINGLE(config, PCIDevice, 0, vmstate_info_pci_config,
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typeof_field(PCIDevice,config)),
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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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void pci_device_save(PCIDevice *s, QEMUFile *f)
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{
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vmstate_save_state(f, &vmstate_pci_device, s);
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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, &vmstate_pci_device, s, s->version_id);
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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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* 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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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;
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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;
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}
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}
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if (dom > 0xffff || bus > 0xff || val > 0x1f)
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return -1;
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slot = val;
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if (*e)
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return -1;
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/* Note: QEMU doesn't implement domains other than 0 */
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if (dom != 0 || pci_find_bus(bus) == NULL)
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return -1;
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*domp = dom;
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*busp = bus;
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*slotp = slot;
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return 0;
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}
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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)) {
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addr += 9;
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}
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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;
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}
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return 0;
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}
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PCIBus *pci_get_bus_devfn(int *devfnp, const char *devaddr)
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{
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int dom, bus;
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unsigned slot;
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if (!devaddr) {
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*devfnp = -1;
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return pci_find_bus(0);
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}
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if (pci_parse_devaddr(devaddr, &dom, &bus, &slot) < 0) {
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return NULL;
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}
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*devfnp = slot << 3;
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return pci_find_bus(bus);
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}
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static void pci_init_cmask(PCIDevice *dev)
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{
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pci_set_word(dev->cmask + PCI_VENDOR_ID, 0xffff);
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pci_set_word(dev->cmask + PCI_DEVICE_ID, 0xffff);
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dev->cmask[PCI_STATUS] = PCI_STATUS_CAP_LIST;
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dev->cmask[PCI_REVISION_ID] = 0xff;
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dev->cmask[PCI_CLASS_PROG] = 0xff;
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pci_set_word(dev->cmask + PCI_CLASS_DEVICE, 0xffff);
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dev->cmask[PCI_HEADER_TYPE] = 0xff;
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dev->cmask[PCI_CAPABILITY_LIST] = 0xff;
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}
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static void pci_init_wmask(PCIDevice *dev)
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{
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int i;
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dev->wmask[PCI_CACHE_LINE_SIZE] = 0xff;
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dev->wmask[PCI_INTERRUPT_LINE] = 0xff;
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dev->wmask[PCI_COMMAND] = PCI_COMMAND_IO | PCI_COMMAND_MEMORY
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| PCI_COMMAND_MASTER;
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for (i = PCI_CONFIG_HEADER_SIZE; i < PCI_CONFIG_SPACE_SIZE; ++i)
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dev->wmask[i] = 0xff;
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}
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/* -1 for devfn means auto assign */
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static PCIDevice *do_pci_register_device(PCIDevice *pci_dev, PCIBus *bus,
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const char *name, int devfn,
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PCIConfigReadFunc *config_read,
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PCIConfigWriteFunc *config_write)
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{
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if (devfn < 0) {
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for(devfn = bus->devfn_min ; devfn < 256; devfn += 8) {
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if (!bus->devices[devfn])
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goto found;
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}
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return NULL;
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found: ;
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} else if (bus->devices[devfn]) {
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return NULL;
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}
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pci_dev->bus = bus;
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pci_dev->devfn = devfn;
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pstrcpy(pci_dev->name, sizeof(pci_dev->name), name);
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memset(pci_dev->irq_state, 0, sizeof(pci_dev->irq_state));
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pci_set_default_subsystem_id(pci_dev);
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pci_init_cmask(pci_dev);
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pci_init_wmask(pci_dev);
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if (!config_read)
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config_read = pci_default_read_config;
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if (!config_write)
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config_write = pci_default_write_config;
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pci_dev->config_read = config_read;
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pci_dev->config_write = config_write;
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bus->devices[devfn] = pci_dev;
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pci_dev->irq = qemu_allocate_irqs(pci_set_irq, pci_dev, PCI_NUM_PINS);
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pci_dev->version_id = 2; /* Current pci device vmstate version */
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return pci_dev;
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}
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PCIDevice *pci_register_device(PCIBus *bus, const char *name,
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int instance_size, int devfn,
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PCIConfigReadFunc *config_read,
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PCIConfigWriteFunc *config_write)
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{
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PCIDevice *pci_dev;
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pci_dev = qemu_mallocz(instance_size);
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pci_dev = do_pci_register_device(pci_dev, bus, name, devfn,
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config_read, config_write);
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return pci_dev;
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}
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static target_phys_addr_t pci_to_cpu_addr(target_phys_addr_t addr)
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{
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return addr + pci_mem_base;
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}
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static void pci_unregister_io_regions(PCIDevice *pci_dev)
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{
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PCIIORegion *r;
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int i;
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for(i = 0; i < PCI_NUM_REGIONS; i++) {
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r = &pci_dev->io_regions[i];
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if (!r->size || r->addr == PCI_BAR_UNMAPPED)
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continue;
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if (r->type == PCI_ADDRESS_SPACE_IO) {
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isa_unassign_ioport(r->addr, r->size);
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} else {
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cpu_register_physical_memory(pci_to_cpu_addr(r->addr),
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r->size,
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IO_MEM_UNASSIGNED);
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}
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}
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}
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static int pci_unregister_device(DeviceState *dev)
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{
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PCIDevice *pci_dev = DO_UPCAST(PCIDevice, qdev, dev);
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PCIDeviceInfo *info = DO_UPCAST(PCIDeviceInfo, qdev, dev->info);
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int ret = 0;
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if (info->exit)
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ret = info->exit(pci_dev);
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if (ret)
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return ret;
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pci_unregister_io_regions(pci_dev);
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qemu_free_irqs(pci_dev->irq);
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pci_dev->bus->devices[pci_dev->devfn] = NULL;
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return 0;
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}
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void pci_register_bar(PCIDevice *pci_dev, int region_num,
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uint32_t size, int type,
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PCIMapIORegionFunc *map_func)
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{
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PCIIORegion *r;
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uint32_t addr;
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uint32_t wmask;
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if ((unsigned int)region_num >= PCI_NUM_REGIONS)
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return;
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if (size & (size-1)) {
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fprintf(stderr, "ERROR: PCI region size must be pow2 "
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"type=0x%x, size=0x%x\n", type, size);
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exit(1);
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}
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r = &pci_dev->io_regions[region_num];
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r->addr = PCI_BAR_UNMAPPED;
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r->size = size;
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r->type = type;
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r->map_func = map_func;
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wmask = ~(size - 1);
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addr = pci_bar(region_num);
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if (region_num == PCI_ROM_SLOT) {
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/* ROM enable bit is writeable */
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wmask |= PCI_ROM_ADDRESS_ENABLE;
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}
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*(uint32_t *)(pci_dev->config + addr) = cpu_to_le32(type);
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*(uint32_t *)(pci_dev->wmask + addr) = cpu_to_le32(wmask);
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*(uint32_t *)(pci_dev->cmask + addr) = 0xffffffff;
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}
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|
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static void pci_update_mappings(PCIDevice *d)
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{
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PCIIORegion *r;
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int cmd, i;
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uint32_t last_addr, new_addr;
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|
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cmd = le16_to_cpu(*(uint16_t *)(d->config + PCI_COMMAND));
|
|
for(i = 0; i < PCI_NUM_REGIONS; i++) {
|
|
r = &d->io_regions[i];
|
|
if (r->size != 0) {
|
|
if (r->type & PCI_ADDRESS_SPACE_IO) {
|
|
if (cmd & PCI_COMMAND_IO) {
|
|
new_addr = pci_get_long(d->config + pci_bar(i));
|
|
new_addr = new_addr & ~(r->size - 1);
|
|
last_addr = new_addr + r->size - 1;
|
|
/* NOTE: we have only 64K ioports on PC */
|
|
if (last_addr <= new_addr || new_addr == 0 ||
|
|
last_addr >= 0x10000) {
|
|
new_addr = PCI_BAR_UNMAPPED;
|
|
}
|
|
} else {
|
|
new_addr = PCI_BAR_UNMAPPED;
|
|
}
|
|
} else {
|
|
if (cmd & PCI_COMMAND_MEMORY) {
|
|
new_addr = pci_get_long(d->config + pci_bar(i));
|
|
/* the ROM slot has a specific enable bit */
|
|
if (i == PCI_ROM_SLOT && !(new_addr & PCI_ROM_ADDRESS_ENABLE))
|
|
goto no_mem_map;
|
|
new_addr = new_addr & ~(r->size - 1);
|
|
last_addr = new_addr + r->size - 1;
|
|
/* NOTE: we do not support wrapping */
|
|
/* XXX: as we cannot support really dynamic
|
|
mappings, we handle specific values as invalid
|
|
mappings. */
|
|
if (last_addr <= new_addr || new_addr == 0 ||
|
|
last_addr == PCI_BAR_UNMAPPED) {
|
|
new_addr = PCI_BAR_UNMAPPED;
|
|
}
|
|
} else {
|
|
no_mem_map:
|
|
new_addr = PCI_BAR_UNMAPPED;
|
|
}
|
|
}
|
|
/* now do the real mapping */
|
|
if (new_addr != r->addr) {
|
|
if (r->addr != PCI_BAR_UNMAPPED) {
|
|
if (r->type & PCI_ADDRESS_SPACE_IO) {
|
|
int class;
|
|
/* NOTE: specific hack for IDE in PC case:
|
|
only one byte must be mapped. */
|
|
class = pci_get_word(d->config + PCI_CLASS_DEVICE);
|
|
if (class == 0x0101 && r->size == 4) {
|
|
isa_unassign_ioport(r->addr + 2, 1);
|
|
} else {
|
|
isa_unassign_ioport(r->addr, r->size);
|
|
}
|
|
} else {
|
|
cpu_register_physical_memory(pci_to_cpu_addr(r->addr),
|
|
r->size,
|
|
IO_MEM_UNASSIGNED);
|
|
qemu_unregister_coalesced_mmio(r->addr, r->size);
|
|
}
|
|
}
|
|
r->addr = new_addr;
|
|
if (r->addr != PCI_BAR_UNMAPPED) {
|
|
r->map_func(d, i, r->addr, r->size, r->type);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
uint32_t pci_default_read_config(PCIDevice *d,
|
|
uint32_t address, int len)
|
|
{
|
|
uint32_t val;
|
|
|
|
switch(len) {
|
|
default:
|
|
case 4:
|
|
if (address <= 0xfc) {
|
|
val = le32_to_cpu(*(uint32_t *)(d->config + address));
|
|
break;
|
|
}
|
|
/* fall through */
|
|
case 2:
|
|
if (address <= 0xfe) {
|
|
val = le16_to_cpu(*(uint16_t *)(d->config + address));
|
|
break;
|
|
}
|
|
/* fall through */
|
|
case 1:
|
|
val = d->config[address];
|
|
break;
|
|
}
|
|
return val;
|
|
}
|
|
|
|
void pci_default_write_config(PCIDevice *d, uint32_t addr, uint32_t val, int l)
|
|
{
|
|
uint8_t orig[PCI_CONFIG_SPACE_SIZE];
|
|
int i;
|
|
|
|
/* not efficient, but simple */
|
|
memcpy(orig, d->config, PCI_CONFIG_SPACE_SIZE);
|
|
for(i = 0; i < l && addr < PCI_CONFIG_SPACE_SIZE; val >>= 8, ++i, ++addr) {
|
|
uint8_t wmask = d->wmask[addr];
|
|
d->config[addr] = (d->config[addr] & ~wmask) | (val & wmask);
|
|
}
|
|
if (memcmp(orig + PCI_BASE_ADDRESS_0, d->config + PCI_BASE_ADDRESS_0, 24)
|
|
|| ((orig[PCI_COMMAND] ^ d->config[PCI_COMMAND])
|
|
& (PCI_COMMAND_MEMORY | PCI_COMMAND_IO)))
|
|
pci_update_mappings(d);
|
|
}
|
|
|
|
void pci_data_write(void *opaque, uint32_t addr, uint32_t val, int len)
|
|
{
|
|
PCIBus *s = opaque;
|
|
PCIDevice *pci_dev;
|
|
int config_addr, bus_num;
|
|
|
|
#if 0
|
|
PCI_DPRINTF("pci_data_write: addr=%08x val=%08x len=%d\n",
|
|
addr, val, len);
|
|
#endif
|
|
bus_num = (addr >> 16) & 0xff;
|
|
while (s && s->bus_num != bus_num)
|
|
s = s->next;
|
|
if (!s)
|
|
return;
|
|
pci_dev = s->devices[(addr >> 8) & 0xff];
|
|
if (!pci_dev)
|
|
return;
|
|
config_addr = addr & 0xff;
|
|
PCI_DPRINTF("pci_config_write: %s: addr=%02x val=%08x len=%d\n",
|
|
pci_dev->name, config_addr, val, len);
|
|
pci_dev->config_write(pci_dev, config_addr, val, len);
|
|
}
|
|
|
|
uint32_t pci_data_read(void *opaque, uint32_t addr, int len)
|
|
{
|
|
PCIBus *s = opaque;
|
|
PCIDevice *pci_dev;
|
|
int config_addr, bus_num;
|
|
uint32_t val;
|
|
|
|
bus_num = (addr >> 16) & 0xff;
|
|
while (s && s->bus_num != bus_num)
|
|
s= s->next;
|
|
if (!s)
|
|
goto fail;
|
|
pci_dev = s->devices[(addr >> 8) & 0xff];
|
|
if (!pci_dev) {
|
|
fail:
|
|
switch(len) {
|
|
case 1:
|
|
val = 0xff;
|
|
break;
|
|
case 2:
|
|
val = 0xffff;
|
|
break;
|
|
default:
|
|
case 4:
|
|
val = 0xffffffff;
|
|
break;
|
|
}
|
|
goto the_end;
|
|
}
|
|
config_addr = addr & 0xff;
|
|
val = pci_dev->config_read(pci_dev, config_addr, len);
|
|
PCI_DPRINTF("pci_config_read: %s: addr=%02x val=%08x len=%d\n",
|
|
pci_dev->name, config_addr, val, len);
|
|
the_end:
|
|
#if 0
|
|
PCI_DPRINTF("pci_data_read: addr=%08x val=%08x len=%d\n",
|
|
addr, val, len);
|
|
#endif
|
|
return val;
|
|
}
|
|
|
|
/***********************************************************/
|
|
/* generic PCI irq support */
|
|
|
|
/* 0 <= irq_num <= 3. level must be 0 or 1 */
|
|
static void pci_set_irq(void *opaque, int irq_num, int level)
|
|
{
|
|
PCIDevice *pci_dev = opaque;
|
|
PCIBus *bus;
|
|
int change;
|
|
|
|
change = level - pci_dev->irq_state[irq_num];
|
|
if (!change)
|
|
return;
|
|
|
|
pci_dev->irq_state[irq_num] = level;
|
|
for (;;) {
|
|
bus = pci_dev->bus;
|
|
irq_num = bus->map_irq(pci_dev, irq_num);
|
|
if (bus->set_irq)
|
|
break;
|
|
pci_dev = bus->parent_dev;
|
|
}
|
|
bus->irq_count[irq_num] += change;
|
|
bus->set_irq(bus->irq_opaque, irq_num, bus->irq_count[irq_num] != 0);
|
|
}
|
|
|
|
/***********************************************************/
|
|
/* monitor info on PCI */
|
|
|
|
typedef struct {
|
|
uint16_t class;
|
|
const char *desc;
|
|
} pci_class_desc;
|
|
|
|
static const pci_class_desc pci_class_descriptions[] =
|
|
{
|
|
{ 0x0100, "SCSI controller"},
|
|
{ 0x0101, "IDE controller"},
|
|
{ 0x0102, "Floppy controller"},
|
|
{ 0x0103, "IPI controller"},
|
|
{ 0x0104, "RAID controller"},
|
|
{ 0x0106, "SATA controller"},
|
|
{ 0x0107, "SAS controller"},
|
|
{ 0x0180, "Storage controller"},
|
|
{ 0x0200, "Ethernet controller"},
|
|
{ 0x0201, "Token Ring controller"},
|
|
{ 0x0202, "FDDI controller"},
|
|
{ 0x0203, "ATM controller"},
|
|
{ 0x0280, "Network controller"},
|
|
{ 0x0300, "VGA controller"},
|
|
{ 0x0301, "XGA controller"},
|
|
{ 0x0302, "3D controller"},
|
|
{ 0x0380, "Display controller"},
|
|
{ 0x0400, "Video controller"},
|
|
{ 0x0401, "Audio controller"},
|
|
{ 0x0402, "Phone"},
|
|
{ 0x0480, "Multimedia controller"},
|
|
{ 0x0500, "RAM controller"},
|
|
{ 0x0501, "Flash controller"},
|
|
{ 0x0580, "Memory controller"},
|
|
{ 0x0600, "Host bridge"},
|
|
{ 0x0601, "ISA bridge"},
|
|
{ 0x0602, "EISA bridge"},
|
|
{ 0x0603, "MC bridge"},
|
|
{ 0x0604, "PCI bridge"},
|
|
{ 0x0605, "PCMCIA bridge"},
|
|
{ 0x0606, "NUBUS bridge"},
|
|
{ 0x0607, "CARDBUS bridge"},
|
|
{ 0x0608, "RACEWAY bridge"},
|
|
{ 0x0680, "Bridge"},
|
|
{ 0x0c03, "USB controller"},
|
|
{ 0, NULL}
|
|
};
|
|
|
|
static void pci_info_device(PCIDevice *d)
|
|
{
|
|
Monitor *mon = cur_mon;
|
|
int i, class;
|
|
PCIIORegion *r;
|
|
const pci_class_desc *desc;
|
|
|
|
monitor_printf(mon, " Bus %2d, device %3d, function %d:\n",
|
|
d->bus->bus_num, PCI_SLOT(d->devfn), PCI_FUNC(d->devfn));
|
|
class = le16_to_cpu(*((uint16_t *)(d->config + PCI_CLASS_DEVICE)));
|
|
monitor_printf(mon, " ");
|
|
desc = pci_class_descriptions;
|
|
while (desc->desc && class != desc->class)
|
|
desc++;
|
|
if (desc->desc) {
|
|
monitor_printf(mon, "%s", desc->desc);
|
|
} else {
|
|
monitor_printf(mon, "Class %04x", class);
|
|
}
|
|
monitor_printf(mon, ": PCI device %04x:%04x\n",
|
|
le16_to_cpu(*((uint16_t *)(d->config + PCI_VENDOR_ID))),
|
|
le16_to_cpu(*((uint16_t *)(d->config + PCI_DEVICE_ID))));
|
|
|
|
if (d->config[PCI_INTERRUPT_PIN] != 0) {
|
|
monitor_printf(mon, " IRQ %d.\n",
|
|
d->config[PCI_INTERRUPT_LINE]);
|
|
}
|
|
if (class == 0x0604) {
|
|
monitor_printf(mon, " BUS %d.\n", d->config[0x19]);
|
|
}
|
|
for(i = 0;i < PCI_NUM_REGIONS; i++) {
|
|
r = &d->io_regions[i];
|
|
if (r->size != 0) {
|
|
monitor_printf(mon, " BAR%d: ", i);
|
|
if (r->type & PCI_ADDRESS_SPACE_IO) {
|
|
monitor_printf(mon, "I/O at 0x%04x [0x%04x].\n",
|
|
r->addr, r->addr + r->size - 1);
|
|
} else {
|
|
monitor_printf(mon, "32 bit memory at 0x%08x [0x%08x].\n",
|
|
r->addr, r->addr + r->size - 1);
|
|
}
|
|
}
|
|
}
|
|
monitor_printf(mon, " id \"%s\"\n", d->qdev.id ? d->qdev.id : "");
|
|
if (class == 0x0604 && d->config[0x19] != 0) {
|
|
pci_for_each_device(d->config[0x19], pci_info_device);
|
|
}
|
|
}
|
|
|
|
void pci_for_each_device(int bus_num, void (*fn)(PCIDevice *d))
|
|
{
|
|
PCIBus *bus = first_bus;
|
|
PCIDevice *d;
|
|
int devfn;
|
|
|
|
while (bus && bus->bus_num != bus_num)
|
|
bus = bus->next;
|
|
if (bus) {
|
|
for(devfn = 0; devfn < 256; devfn++) {
|
|
d = bus->devices[devfn];
|
|
if (d)
|
|
fn(d);
|
|
}
|
|
}
|
|
}
|
|
|
|
void pci_info(Monitor *mon)
|
|
{
|
|
pci_for_each_device(0, pci_info_device);
|
|
}
|
|
|
|
static const char * const pci_nic_models[] = {
|
|
"ne2k_pci",
|
|
"i82551",
|
|
"i82557b",
|
|
"i82559er",
|
|
"rtl8139",
|
|
"e1000",
|
|
"pcnet",
|
|
"virtio",
|
|
NULL
|
|
};
|
|
|
|
static const char * const pci_nic_names[] = {
|
|
"ne2k_pci",
|
|
"i82551",
|
|
"i82557b",
|
|
"i82559er",
|
|
"rtl8139",
|
|
"e1000",
|
|
"pcnet",
|
|
"virtio-net-pci",
|
|
NULL
|
|
};
|
|
|
|
/* Initialize a PCI NIC. */
|
|
/* FIXME callers should check for failure, but don't */
|
|
PCIDevice *pci_nic_init(NICInfo *nd, const char *default_model,
|
|
const char *default_devaddr)
|
|
{
|
|
const char *devaddr = nd->devaddr ? nd->devaddr : default_devaddr;
|
|
PCIBus *bus;
|
|
int devfn;
|
|
PCIDevice *pci_dev;
|
|
DeviceState *dev;
|
|
int i;
|
|
|
|
i = qemu_find_nic_model(nd, pci_nic_models, default_model);
|
|
if (i < 0)
|
|
return NULL;
|
|
|
|
bus = pci_get_bus_devfn(&devfn, devaddr);
|
|
if (!bus) {
|
|
qemu_error("Invalid PCI device address %s for device %s\n",
|
|
devaddr, pci_nic_names[i]);
|
|
return NULL;
|
|
}
|
|
|
|
pci_dev = pci_create(bus, devfn, pci_nic_names[i]);
|
|
dev = &pci_dev->qdev;
|
|
if (nd->name)
|
|
dev->id = qemu_strdup(nd->name);
|
|
qdev_set_nic_properties(dev, nd);
|
|
if (qdev_init(dev) < 0)
|
|
return NULL;
|
|
return pci_dev;
|
|
}
|
|
|
|
PCIDevice *pci_nic_init_nofail(NICInfo *nd, 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);
|
|
if (!res)
|
|
exit(1);
|
|
return res;
|
|
}
|
|
|
|
typedef struct {
|
|
PCIDevice dev;
|
|
PCIBus bus;
|
|
uint32_t vid;
|
|
uint32_t did;
|
|
} PCIBridge;
|
|
|
|
static void pci_bridge_write_config(PCIDevice *d,
|
|
uint32_t address, uint32_t val, int len)
|
|
{
|
|
PCIBridge *s = (PCIBridge *)d;
|
|
|
|
pci_default_write_config(d, address, val, len);
|
|
s->bus.bus_num = d->config[PCI_SECONDARY_BUS];
|
|
}
|
|
|
|
PCIBus *pci_find_bus(int bus_num)
|
|
{
|
|
PCIBus *bus = first_bus;
|
|
|
|
while (bus && bus->bus_num != bus_num)
|
|
bus = bus->next;
|
|
|
|
return bus;
|
|
}
|
|
|
|
PCIDevice *pci_find_device(int bus_num, int slot, int function)
|
|
{
|
|
PCIBus *bus = pci_find_bus(bus_num);
|
|
|
|
if (!bus)
|
|
return NULL;
|
|
|
|
return bus->devices[PCI_DEVFN(slot, function)];
|
|
}
|
|
|
|
static int pci_bridge_initfn(PCIDevice *dev)
|
|
{
|
|
PCIBridge *s = DO_UPCAST(PCIBridge, dev, dev);
|
|
|
|
pci_config_set_vendor_id(s->dev.config, s->vid);
|
|
pci_config_set_device_id(s->dev.config, s->did);
|
|
|
|
s->dev.config[0x04] = 0x06; // command = bus master, pci mem
|
|
s->dev.config[0x05] = 0x00;
|
|
s->dev.config[0x06] = 0xa0; // status = fast back-to-back, 66MHz, no error
|
|
s->dev.config[0x07] = 0x00; // status = fast devsel
|
|
s->dev.config[0x08] = 0x00; // revision
|
|
s->dev.config[0x09] = 0x00; // programming i/f
|
|
pci_config_set_class(s->dev.config, PCI_CLASS_BRIDGE_PCI);
|
|
s->dev.config[0x0D] = 0x10; // latency_timer
|
|
s->dev.config[PCI_HEADER_TYPE] =
|
|
PCI_HEADER_TYPE_MULTI_FUNCTION | PCI_HEADER_TYPE_BRIDGE; // header_type
|
|
s->dev.config[0x1E] = 0xa0; // secondary status
|
|
return 0;
|
|
}
|
|
|
|
PCIBus *pci_bridge_init(PCIBus *bus, int devfn, uint16_t vid, uint16_t did,
|
|
pci_map_irq_fn map_irq, const char *name)
|
|
{
|
|
PCIDevice *dev;
|
|
PCIBridge *s;
|
|
|
|
dev = pci_create(bus, devfn, "pci-bridge");
|
|
qdev_prop_set_uint32(&dev->qdev, "vendorid", vid);
|
|
qdev_prop_set_uint32(&dev->qdev, "deviceid", did);
|
|
qdev_init_nofail(&dev->qdev);
|
|
|
|
s = DO_UPCAST(PCIBridge, dev, dev);
|
|
pci_register_secondary_bus(&s->bus, &s->dev, map_irq, name);
|
|
return &s->bus;
|
|
}
|
|
|
|
static int pci_qdev_init(DeviceState *qdev, DeviceInfo *base)
|
|
{
|
|
PCIDevice *pci_dev = (PCIDevice *)qdev;
|
|
PCIDeviceInfo *info = container_of(base, PCIDeviceInfo, qdev);
|
|
PCIBus *bus;
|
|
int devfn, rc;
|
|
|
|
bus = FROM_QBUS(PCIBus, qdev_get_parent_bus(qdev));
|
|
devfn = pci_dev->devfn;
|
|
pci_dev = do_pci_register_device(pci_dev, bus, base->name, devfn,
|
|
info->config_read, info->config_write);
|
|
assert(pci_dev);
|
|
rc = info->init(pci_dev);
|
|
if (rc != 0)
|
|
return rc;
|
|
if (qdev->hotplugged)
|
|
bus->hotplug(pci_dev, 1);
|
|
return 0;
|
|
}
|
|
|
|
static int pci_unplug_device(DeviceState *qdev)
|
|
{
|
|
PCIDevice *dev = DO_UPCAST(PCIDevice, qdev, qdev);
|
|
|
|
dev->bus->hotplug(dev, 0);
|
|
return 0;
|
|
}
|
|
|
|
void pci_qdev_register(PCIDeviceInfo *info)
|
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{
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info->qdev.init = pci_qdev_init;
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info->qdev.unplug = pci_unplug_device;
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info->qdev.exit = pci_unregister_device;
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info->qdev.bus_info = &pci_bus_info;
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qdev_register(&info->qdev);
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}
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void pci_qdev_register_many(PCIDeviceInfo *info)
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{
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while (info->qdev.name) {
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pci_qdev_register(info);
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info++;
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}
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}
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PCIDevice *pci_create(PCIBus *bus, int devfn, const char *name)
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{
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DeviceState *dev;
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dev = qdev_create(&bus->qbus, name);
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qdev_prop_set_uint32(dev, "addr", devfn);
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return DO_UPCAST(PCIDevice, qdev, dev);
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}
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PCIDevice *pci_create_simple(PCIBus *bus, int devfn, const char *name)
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{
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PCIDevice *dev = pci_create(bus, devfn, name);
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qdev_init_nofail(&dev->qdev);
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return dev;
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}
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static int pci_find_space(PCIDevice *pdev, uint8_t size)
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{
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int offset = PCI_CONFIG_HEADER_SIZE;
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int i;
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for (i = PCI_CONFIG_HEADER_SIZE; i < PCI_CONFIG_SPACE_SIZE; ++i)
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if (pdev->used[i])
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offset = i + 1;
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else if (i - offset + 1 == size)
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return offset;
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return 0;
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}
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static uint8_t pci_find_capability_list(PCIDevice *pdev, uint8_t cap_id,
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uint8_t *prev_p)
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{
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uint8_t next, prev;
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if (!(pdev->config[PCI_STATUS] & PCI_STATUS_CAP_LIST))
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return 0;
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for (prev = PCI_CAPABILITY_LIST; (next = pdev->config[prev]);
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prev = next + PCI_CAP_LIST_NEXT)
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if (pdev->config[next + PCI_CAP_LIST_ID] == cap_id)
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break;
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if (prev_p)
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*prev_p = prev;
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return next;
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}
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/* Reserve space and add capability to the linked list in pci config space */
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int pci_add_capability(PCIDevice *pdev, uint8_t cap_id, uint8_t size)
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{
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uint8_t offset = pci_find_space(pdev, size);
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uint8_t *config = pdev->config + offset;
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if (!offset)
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return -ENOSPC;
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config[PCI_CAP_LIST_ID] = cap_id;
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config[PCI_CAP_LIST_NEXT] = pdev->config[PCI_CAPABILITY_LIST];
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pdev->config[PCI_CAPABILITY_LIST] = offset;
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pdev->config[PCI_STATUS] |= PCI_STATUS_CAP_LIST;
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memset(pdev->used + offset, 0xFF, size);
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/* Make capability read-only by default */
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memset(pdev->wmask + offset, 0, size);
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/* Check capability by default */
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memset(pdev->cmask + offset, 0xFF, size);
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return offset;
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}
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/* Unlink capability from the pci config space. */
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void pci_del_capability(PCIDevice *pdev, uint8_t cap_id, uint8_t size)
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{
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uint8_t prev, offset = pci_find_capability_list(pdev, cap_id, &prev);
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if (!offset)
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return;
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pdev->config[prev] = pdev->config[offset + PCI_CAP_LIST_NEXT];
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/* Make capability writeable again */
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memset(pdev->wmask + offset, 0xff, size);
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/* Clear cmask as device-specific registers can't be checked */
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memset(pdev->cmask + offset, 0, size);
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memset(pdev->used + offset, 0, size);
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if (!pdev->config[PCI_CAPABILITY_LIST])
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pdev->config[PCI_STATUS] &= ~PCI_STATUS_CAP_LIST;
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}
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/* Reserve space for capability at a known offset (to call after load). */
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void pci_reserve_capability(PCIDevice *pdev, uint8_t offset, uint8_t size)
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{
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memset(pdev->used + offset, 0xff, size);
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}
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uint8_t pci_find_capability(PCIDevice *pdev, uint8_t cap_id)
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{
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return pci_find_capability_list(pdev, cap_id, NULL);
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}
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static void pcibus_dev_print(Monitor *mon, DeviceState *dev, int indent)
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{
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PCIDevice *d = (PCIDevice *)dev;
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const pci_class_desc *desc;
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char ctxt[64];
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|
PCIIORegion *r;
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int i, class;
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class = le16_to_cpu(*((uint16_t *)(d->config + PCI_CLASS_DEVICE)));
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desc = pci_class_descriptions;
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while (desc->desc && class != desc->class)
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desc++;
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if (desc->desc) {
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|
snprintf(ctxt, sizeof(ctxt), "%s", desc->desc);
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} else {
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|
snprintf(ctxt, sizeof(ctxt), "Class %04x", class);
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}
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|
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|
monitor_printf(mon, "%*sclass %s, addr %02x:%02x.%x, "
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|
"pci id %04x:%04x (sub %04x:%04x)\n",
|
|
indent, "", ctxt,
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|
d->bus->bus_num, PCI_SLOT(d->devfn), PCI_FUNC(d->devfn),
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le16_to_cpu(*((uint16_t *)(d->config + PCI_VENDOR_ID))),
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le16_to_cpu(*((uint16_t *)(d->config + PCI_DEVICE_ID))),
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|
le16_to_cpu(*((uint16_t *)(d->config + PCI_SUBSYSTEM_VENDOR_ID))),
|
|
le16_to_cpu(*((uint16_t *)(d->config + PCI_SUBSYSTEM_ID))));
|
|
for (i = 0; i < PCI_NUM_REGIONS; i++) {
|
|
r = &d->io_regions[i];
|
|
if (!r->size)
|
|
continue;
|
|
monitor_printf(mon, "%*sbar %d: %s at 0x%x [0x%x]\n", indent, "",
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|
i, r->type & PCI_ADDRESS_SPACE_IO ? "i/o" : "mem",
|
|
r->addr, r->addr + r->size - 1);
|
|
}
|
|
}
|
|
|
|
static PCIDeviceInfo bridge_info = {
|
|
.qdev.name = "pci-bridge",
|
|
.qdev.size = sizeof(PCIBridge),
|
|
.init = pci_bridge_initfn,
|
|
.config_write = pci_bridge_write_config,
|
|
.qdev.props = (Property[]) {
|
|
DEFINE_PROP_HEX32("vendorid", PCIBridge, vid, 0),
|
|
DEFINE_PROP_HEX32("deviceid", PCIBridge, did, 0),
|
|
DEFINE_PROP_END_OF_LIST(),
|
|
}
|
|
};
|
|
|
|
static void pci_register_devices(void)
|
|
{
|
|
pci_qdev_register(&bridge_info);
|
|
}
|
|
|
|
device_init(pci_register_devices)
|