root / hw / pci / pci.c @ df32fd1c
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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/hw.h" |
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#include "hw/pci/pci.h" |
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#include "hw/pci/pci_bridge.h" |
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#include "hw/pci/pci_bus.h" |
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#include "monitor/monitor.h" |
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#include "net/net.h" |
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#include "sysemu/sysemu.h" |
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#include "hw/loader.h" |
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#include "qemu/range.h" |
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#include "qmp-commands.h" |
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#include "hw/pci/msi.h" |
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#include "hw/pci/msix.h" |
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#include "exec/address-spaces.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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|
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static void pcibus_dev_print(Monitor *mon, DeviceState *dev, int indent); |
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static char *pcibus_get_dev_path(DeviceState *dev); |
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static char *pcibus_get_fw_dev_path(DeviceState *dev); |
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static int pcibus_reset(BusState *qbus); |
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|
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static Property pci_props[] = {
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DEFINE_PROP_PCI_DEVFN("addr", PCIDevice, devfn, -1), |
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DEFINE_PROP_STRING("romfile", PCIDevice, romfile),
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DEFINE_PROP_UINT32("rombar", PCIDevice, rom_bar, 1), |
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DEFINE_PROP_BIT("multifunction", PCIDevice, cap_present,
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QEMU_PCI_CAP_MULTIFUNCTION_BITNR, false),
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DEFINE_PROP_BIT("command_serr_enable", PCIDevice, cap_present,
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QEMU_PCI_CAP_SERR_BITNR, true),
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DEFINE_PROP_END_OF_LIST() |
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}; |
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|
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static void pci_bus_class_init(ObjectClass *klass, void *data) |
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{
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BusClass *k = BUS_CLASS(klass); |
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|
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k->print_dev = pcibus_dev_print; |
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k->get_dev_path = pcibus_get_dev_path; |
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k->get_fw_dev_path = pcibus_get_fw_dev_path; |
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k->reset = pcibus_reset; |
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} |
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|
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static const TypeInfo pci_bus_info = { |
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.name = TYPE_PCI_BUS, |
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.parent = TYPE_BUS, |
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.instance_size = sizeof(PCIBus),
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.class_init = pci_bus_class_init, |
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}; |
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|
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static const TypeInfo pcie_bus_info = { |
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.name = TYPE_PCIE_BUS, |
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.parent = TYPE_PCI_BUS, |
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}; |
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|
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static PCIBus *pci_find_bus_nr(PCIBus *bus, int bus_num); |
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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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static int pci_add_option_rom(PCIDevice *pdev, bool is_default_rom); |
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static void pci_del_option_rom(PCIDevice *pdev); |
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|
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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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|
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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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|
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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 inline int pci_irq_state(PCIDevice *d, int irq_num) |
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{
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return (d->irq_state >> irq_num) & 0x1; |
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} |
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static inline void pci_set_irq_state(PCIDevice *d, int irq_num, int level) |
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{
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d->irq_state &= ~(0x1 << irq_num);
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d->irq_state |= level << irq_num; |
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} |
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static void pci_change_irq_level(PCIDevice *pci_dev, int irq_num, int change) |
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{
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PCIBus *bus; |
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for (;;) {
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bus = pci_dev->bus; |
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irq_num = bus->map_irq(pci_dev, irq_num); |
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if (bus->set_irq)
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break;
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pci_dev = bus->parent_dev; |
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} |
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bus->irq_count[irq_num] += change; |
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bus->set_irq(bus->irq_opaque, irq_num, bus->irq_count[irq_num] != 0);
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} |
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int pci_bus_get_irq_level(PCIBus *bus, int irq_num) |
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{
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assert(irq_num >= 0);
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assert(irq_num < bus->nirq); |
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return !!bus->irq_count[irq_num];
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} |
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|
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/* Update interrupt status bit in config space on interrupt
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* state change. */
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static void pci_update_irq_status(PCIDevice *dev) |
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{
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if (dev->irq_state) {
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dev->config[PCI_STATUS] |= PCI_STATUS_INTERRUPT; |
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} else {
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dev->config[PCI_STATUS] &= ~PCI_STATUS_INTERRUPT; |
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} |
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} |
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|
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void pci_device_deassert_intx(PCIDevice *dev)
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{
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int i;
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for (i = 0; i < PCI_NUM_PINS; ++i) { |
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qemu_set_irq(dev->irq[i], 0);
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} |
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} |
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|
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/*
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* This function is called on #RST and FLR.
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* FLR if PCI_EXP_DEVCTL_BCR_FLR is set
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*/
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void pci_device_reset(PCIDevice *dev)
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{
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int r;
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qdev_reset_all(&dev->qdev); |
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dev->irq_state = 0;
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pci_update_irq_status(dev); |
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pci_device_deassert_intx(dev); |
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/* Clear all writable bits */
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pci_word_test_and_clear_mask(dev->config + PCI_COMMAND, |
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pci_get_word(dev->wmask + PCI_COMMAND) | |
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pci_get_word(dev->w1cmask + PCI_COMMAND)); |
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pci_word_test_and_clear_mask(dev->config + PCI_STATUS, |
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pci_get_word(dev->wmask + PCI_STATUS) | |
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pci_get_word(dev->w1cmask + PCI_STATUS)); |
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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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PCIIORegion *region = &dev->io_regions[r]; |
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if (!region->size) {
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continue;
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} |
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if (!(region->type & PCI_BASE_ADDRESS_SPACE_IO) &&
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region->type & PCI_BASE_ADDRESS_MEM_TYPE_64) {
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pci_set_quad(dev->config + pci_bar(dev, r), region->type); |
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} else {
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pci_set_long(dev->config + pci_bar(dev, r), region->type); |
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} |
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} |
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pci_update_mappings(dev); |
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msi_reset(dev); |
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msix_reset(dev); |
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} |
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|
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/*
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* Trigger pci bus reset under a given bus.
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* To be called on RST# assert.
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*/
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void pci_bus_reset(PCIBus *bus)
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{
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int i;
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|
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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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|
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static int pcibus_reset(BusState *qbus) |
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{
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pci_bus_reset(DO_UPCAST(PCIBus, qbus, qbus)); |
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|
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/* topology traverse is done by pci_bus_reset().
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Tell qbus/qdev walker not to traverse the tree */
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return 1; |
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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 = g_malloc0(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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|
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PCIBus *pci_find_root_bus(int domain)
|
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{
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struct PCIHostBus *host;
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|
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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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|
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return NULL; |
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} |
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|
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int pci_find_domain(const PCIBus *bus) |
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{
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PCIDevice *d; |
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struct PCIHostBus *host;
|
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|
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/* obtain root bus */
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while ((d = bus->parent_dev) != NULL) { |
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bus = d->bus; |
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} |
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|
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QLIST_FOREACH(host, &host_buses, next) {
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if (host->bus == bus) {
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return host->domain;
|
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} |
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} |
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|
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abort(); /* should not be reached */
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return -1; |
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} |
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|
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static void pci_bus_init(PCIBus *bus, DeviceState *parent, |
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const char *name, |
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MemoryRegion *address_space_mem, |
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MemoryRegion *address_space_io, |
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uint8_t devfn_min) |
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{
|
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assert(PCI_FUNC(devfn_min) == 0);
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bus->devfn_min = devfn_min; |
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bus->address_space_mem = address_space_mem; |
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bus->address_space_io = address_space_io; |
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|
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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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|
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vmstate_register(NULL, -1, &vmstate_pcibus, bus); |
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} |
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|
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bool pci_bus_is_express(PCIBus *bus)
|
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{
|
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return object_dynamic_cast(OBJECT(bus), TYPE_PCIE_BUS);
|
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} |
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|
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bool pci_bus_is_root(PCIBus *bus)
|
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{
|
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return !bus->parent_dev;
|
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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, |
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MemoryRegion *address_space_mem, |
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MemoryRegion *address_space_io, |
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uint8_t devfn_min, const char *typename) |
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{
|
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qbus_create_inplace(bus, typename, parent, name); |
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pci_bus_init(bus, parent, name, address_space_mem, |
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address_space_io, devfn_min); |
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} |
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|
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PCIBus *pci_bus_new(DeviceState *parent, const char *name, |
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MemoryRegion *address_space_mem, |
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MemoryRegion *address_space_io, |
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uint8_t devfn_min, const char *typename) |
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{
|
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PCIBus *bus; |
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|
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bus = PCI_BUS(qbus_create(typename, parent, name)); |
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pci_bus_init(bus, parent, name, address_space_mem, |
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address_space_io, devfn_min); |
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return bus;
|
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} |
| 333 |
|
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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 = g_malloc0(nirq * sizeof(bus->irq_count[0])); |
| 342 |
} |
| 343 |
|
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void pci_bus_hotplug(PCIBus *bus, pci_hotplug_fn hotplug, DeviceState *qdev)
|
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{
|
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bus->qbus.allow_hotplug = 1;
|
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bus->hotplug = hotplug; |
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bus->hotplug_qdev = qdev; |
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} |
| 350 |
|
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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,
|
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MemoryRegion *address_space_mem, |
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MemoryRegion *address_space_io, |
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uint8_t devfn_min, int nirq, const char *typename) |
| 357 |
{
|
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PCIBus *bus; |
| 359 |
|
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bus = pci_bus_new(parent, name, address_space_mem, |
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address_space_io, devfn_min, typename); |
| 362 |
pci_bus_irqs(bus, set_irq, map_irq, irq_opaque, nirq); |
| 363 |
return bus;
|
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} |
| 365 |
|
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int pci_bus_num(PCIBus *s)
|
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{
|
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if (pci_bus_is_root(s))
|
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return 0; /* pci host bridge */ |
| 370 |
return s->parent_dev->config[PCI_SECONDARY_BUS];
|
| 371 |
} |
| 372 |
|
| 373 |
static int get_pci_config_device(QEMUFile *f, void *pv, size_t size) |
| 374 |
{
|
| 375 |
PCIDevice *s = container_of(pv, PCIDevice, config); |
| 376 |
uint8_t *config; |
| 377 |
int i;
|
| 378 |
|
| 379 |
assert(size == pci_config_size(s)); |
| 380 |
config = g_malloc(size); |
| 381 |
|
| 382 |
qemu_get_buffer(f, config, size); |
| 383 |
for (i = 0; i < size; ++i) { |
| 384 |
if ((config[i] ^ s->config[i]) &
|
| 385 |
s->cmask[i] & ~s->wmask[i] & ~s->w1cmask[i]) {
|
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g_free(config); |
| 387 |
return -EINVAL;
|
| 388 |
} |
| 389 |
} |
| 390 |
memcpy(s->config, config, size); |
| 391 |
|
| 392 |
pci_update_mappings(s); |
| 393 |
|
| 394 |
memory_region_set_enabled(&s->bus_master_enable_region, |
| 395 |
pci_get_word(s->config + PCI_COMMAND) |
| 396 |
& PCI_COMMAND_MASTER); |
| 397 |
|
| 398 |
g_free(config); |
| 399 |
return 0; |
| 400 |
} |
| 401 |
|
| 402 |
/* just put buffer */
|
| 403 |
static void put_pci_config_device(QEMUFile *f, void *pv, size_t size) |
| 404 |
{
|
| 405 |
const uint8_t **v = pv;
|
| 406 |
assert(size == pci_config_size(container_of(pv, PCIDevice, config))); |
| 407 |
qemu_put_buffer(f, *v, size); |
| 408 |
} |
| 409 |
|
| 410 |
static VMStateInfo vmstate_info_pci_config = {
|
| 411 |
.name = "pci config",
|
| 412 |
.get = get_pci_config_device, |
| 413 |
.put = put_pci_config_device, |
| 414 |
}; |
| 415 |
|
| 416 |
static int get_pci_irq_state(QEMUFile *f, void *pv, size_t size) |
| 417 |
{
|
| 418 |
PCIDevice *s = container_of(pv, PCIDevice, irq_state); |
| 419 |
uint32_t irq_state[PCI_NUM_PINS]; |
| 420 |
int i;
|
| 421 |
for (i = 0; i < PCI_NUM_PINS; ++i) { |
| 422 |
irq_state[i] = qemu_get_be32(f); |
| 423 |
if (irq_state[i] != 0x1 && irq_state[i] != 0) { |
| 424 |
fprintf(stderr, "irq state %d: must be 0 or 1.\n",
|
| 425 |
irq_state[i]); |
| 426 |
return -EINVAL;
|
| 427 |
} |
| 428 |
} |
| 429 |
|
| 430 |
for (i = 0; i < PCI_NUM_PINS; ++i) { |
| 431 |
pci_set_irq_state(s, i, irq_state[i]); |
| 432 |
} |
| 433 |
|
| 434 |
return 0; |
| 435 |
} |
| 436 |
|
| 437 |
static void put_pci_irq_state(QEMUFile *f, void *pv, size_t size) |
| 438 |
{
|
| 439 |
int i;
|
| 440 |
PCIDevice *s = container_of(pv, PCIDevice, irq_state); |
| 441 |
|
| 442 |
for (i = 0; i < PCI_NUM_PINS; ++i) { |
| 443 |
qemu_put_be32(f, pci_irq_state(s, i)); |
| 444 |
} |
| 445 |
} |
| 446 |
|
| 447 |
static VMStateInfo vmstate_info_pci_irq_state = {
|
| 448 |
.name = "pci irq state",
|
| 449 |
.get = get_pci_irq_state, |
| 450 |
.put = put_pci_irq_state, |
| 451 |
}; |
| 452 |
|
| 453 |
const VMStateDescription vmstate_pci_device = {
|
| 454 |
.name = "PCIDevice",
|
| 455 |
.version_id = 2,
|
| 456 |
.minimum_version_id = 1,
|
| 457 |
.minimum_version_id_old = 1,
|
| 458 |
.fields = (VMStateField []) {
|
| 459 |
VMSTATE_INT32_LE(version_id, PCIDevice), |
| 460 |
VMSTATE_BUFFER_UNSAFE_INFO(config, PCIDevice, 0,
|
| 461 |
vmstate_info_pci_config, |
| 462 |
PCI_CONFIG_SPACE_SIZE), |
| 463 |
VMSTATE_BUFFER_UNSAFE_INFO(irq_state, PCIDevice, 2,
|
| 464 |
vmstate_info_pci_irq_state, |
| 465 |
PCI_NUM_PINS * sizeof(int32_t)),
|
| 466 |
VMSTATE_END_OF_LIST() |
| 467 |
} |
| 468 |
}; |
| 469 |
|
| 470 |
const VMStateDescription vmstate_pcie_device = {
|
| 471 |
.name = "PCIEDevice",
|
| 472 |
.version_id = 2,
|
| 473 |
.minimum_version_id = 1,
|
| 474 |
.minimum_version_id_old = 1,
|
| 475 |
.fields = (VMStateField []) {
|
| 476 |
VMSTATE_INT32_LE(version_id, PCIDevice), |
| 477 |
VMSTATE_BUFFER_UNSAFE_INFO(config, PCIDevice, 0,
|
| 478 |
vmstate_info_pci_config, |
| 479 |
PCIE_CONFIG_SPACE_SIZE), |
| 480 |
VMSTATE_BUFFER_UNSAFE_INFO(irq_state, PCIDevice, 2,
|
| 481 |
vmstate_info_pci_irq_state, |
| 482 |
PCI_NUM_PINS * sizeof(int32_t)),
|
| 483 |
VMSTATE_END_OF_LIST() |
| 484 |
} |
| 485 |
}; |
| 486 |
|
| 487 |
static inline const VMStateDescription *pci_get_vmstate(PCIDevice *s) |
| 488 |
{
|
| 489 |
return pci_is_express(s) ? &vmstate_pcie_device : &vmstate_pci_device;
|
| 490 |
} |
| 491 |
|
| 492 |
void pci_device_save(PCIDevice *s, QEMUFile *f)
|
| 493 |
{
|
| 494 |
/* Clear interrupt status bit: it is implicit
|
| 495 |
* in irq_state which we are saving.
|
| 496 |
* This makes us compatible with old devices
|
| 497 |
* which never set or clear this bit. */
|
| 498 |
s->config[PCI_STATUS] &= ~PCI_STATUS_INTERRUPT; |
| 499 |
vmstate_save_state(f, pci_get_vmstate(s), s); |
| 500 |
/* Restore the interrupt status bit. */
|
| 501 |
pci_update_irq_status(s); |
| 502 |
} |
| 503 |
|
| 504 |
int pci_device_load(PCIDevice *s, QEMUFile *f)
|
| 505 |
{
|
| 506 |
int ret;
|
| 507 |
ret = vmstate_load_state(f, pci_get_vmstate(s), s, s->version_id); |
| 508 |
/* Restore the interrupt status bit. */
|
| 509 |
pci_update_irq_status(s); |
| 510 |
return ret;
|
| 511 |
} |
| 512 |
|
| 513 |
static void pci_set_default_subsystem_id(PCIDevice *pci_dev) |
| 514 |
{
|
| 515 |
pci_set_word(pci_dev->config + PCI_SUBSYSTEM_VENDOR_ID, |
| 516 |
pci_default_sub_vendor_id); |
| 517 |
pci_set_word(pci_dev->config + PCI_SUBSYSTEM_ID, |
| 518 |
pci_default_sub_device_id); |
| 519 |
} |
| 520 |
|
| 521 |
/*
|
| 522 |
* Parse [[<domain>:]<bus>:]<slot>, return -1 on error if funcp == NULL
|
| 523 |
* [[<domain>:]<bus>:]<slot>.<func>, return -1 on error
|
| 524 |
*/
|
| 525 |
static int pci_parse_devaddr(const char *addr, int *domp, int *busp, |
| 526 |
unsigned int *slotp, unsigned int *funcp) |
| 527 |
{
|
| 528 |
const char *p; |
| 529 |
char *e;
|
| 530 |
unsigned long val; |
| 531 |
unsigned long dom = 0, bus = 0; |
| 532 |
unsigned int slot = 0; |
| 533 |
unsigned int func = 0; |
| 534 |
|
| 535 |
p = addr; |
| 536 |
val = strtoul(p, &e, 16);
|
| 537 |
if (e == p)
|
| 538 |
return -1; |
| 539 |
if (*e == ':') { |
| 540 |
bus = val; |
| 541 |
p = e + 1;
|
| 542 |
val = strtoul(p, &e, 16);
|
| 543 |
if (e == p)
|
| 544 |
return -1; |
| 545 |
if (*e == ':') { |
| 546 |
dom = bus; |
| 547 |
bus = val; |
| 548 |
p = e + 1;
|
| 549 |
val = strtoul(p, &e, 16);
|
| 550 |
if (e == p)
|
| 551 |
return -1; |
| 552 |
} |
| 553 |
} |
| 554 |
|
| 555 |
slot = val; |
| 556 |
|
| 557 |
if (funcp != NULL) { |
| 558 |
if (*e != '.') |
| 559 |
return -1; |
| 560 |
|
| 561 |
p = e + 1;
|
| 562 |
val = strtoul(p, &e, 16);
|
| 563 |
if (e == p)
|
| 564 |
return -1; |
| 565 |
|
| 566 |
func = val; |
| 567 |
} |
| 568 |
|
| 569 |
/* if funcp == NULL func is 0 */
|
| 570 |
if (dom > 0xffff || bus > 0xff || slot > 0x1f || func > 7) |
| 571 |
return -1; |
| 572 |
|
| 573 |
if (*e)
|
| 574 |
return -1; |
| 575 |
|
| 576 |
*domp = dom; |
| 577 |
*busp = bus; |
| 578 |
*slotp = slot; |
| 579 |
if (funcp != NULL) |
| 580 |
*funcp = func; |
| 581 |
return 0; |
| 582 |
} |
| 583 |
|
| 584 |
int pci_read_devaddr(Monitor *mon, const char *addr, int *domp, int *busp, |
| 585 |
unsigned *slotp)
|
| 586 |
{
|
| 587 |
/* strip legacy tag */
|
| 588 |
if (!strncmp(addr, "pci_addr=", 9)) { |
| 589 |
addr += 9;
|
| 590 |
} |
| 591 |
if (pci_parse_devaddr(addr, domp, busp, slotp, NULL)) { |
| 592 |
monitor_printf(mon, "Invalid pci address\n");
|
| 593 |
return -1; |
| 594 |
} |
| 595 |
return 0; |
| 596 |
} |
| 597 |
|
| 598 |
PCIBus *pci_get_bus_devfn(int *devfnp, const char *devaddr) |
| 599 |
{
|
| 600 |
int dom, bus;
|
| 601 |
unsigned slot;
|
| 602 |
|
| 603 |
if (!devaddr) {
|
| 604 |
*devfnp = -1;
|
| 605 |
return pci_find_bus_nr(pci_find_root_bus(0), 0); |
| 606 |
} |
| 607 |
|
| 608 |
if (pci_parse_devaddr(devaddr, &dom, &bus, &slot, NULL) < 0) { |
| 609 |
return NULL; |
| 610 |
} |
| 611 |
|
| 612 |
*devfnp = PCI_DEVFN(slot, 0);
|
| 613 |
return pci_find_bus_nr(pci_find_root_bus(dom), bus);
|
| 614 |
} |
| 615 |
|
| 616 |
static void pci_init_cmask(PCIDevice *dev) |
| 617 |
{
|
| 618 |
pci_set_word(dev->cmask + PCI_VENDOR_ID, 0xffff);
|
| 619 |
pci_set_word(dev->cmask + PCI_DEVICE_ID, 0xffff);
|
| 620 |
dev->cmask[PCI_STATUS] = PCI_STATUS_CAP_LIST; |
| 621 |
dev->cmask[PCI_REVISION_ID] = 0xff;
|
| 622 |
dev->cmask[PCI_CLASS_PROG] = 0xff;
|
| 623 |
pci_set_word(dev->cmask + PCI_CLASS_DEVICE, 0xffff);
|
| 624 |
dev->cmask[PCI_HEADER_TYPE] = 0xff;
|
| 625 |
dev->cmask[PCI_CAPABILITY_LIST] = 0xff;
|
| 626 |
} |
| 627 |
|
| 628 |
static void pci_init_wmask(PCIDevice *dev) |
| 629 |
{
|
| 630 |
int config_size = pci_config_size(dev);
|
| 631 |
|
| 632 |
dev->wmask[PCI_CACHE_LINE_SIZE] = 0xff;
|
| 633 |
dev->wmask[PCI_INTERRUPT_LINE] = 0xff;
|
| 634 |
pci_set_word(dev->wmask + PCI_COMMAND, |
| 635 |
PCI_COMMAND_IO | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER | |
| 636 |
PCI_COMMAND_INTX_DISABLE); |
| 637 |
if (dev->cap_present & QEMU_PCI_CAP_SERR) {
|
| 638 |
pci_word_test_and_set_mask(dev->wmask + PCI_COMMAND, PCI_COMMAND_SERR); |
| 639 |
} |
| 640 |
|
| 641 |
memset(dev->wmask + PCI_CONFIG_HEADER_SIZE, 0xff,
|
| 642 |
config_size - PCI_CONFIG_HEADER_SIZE); |
| 643 |
} |
| 644 |
|
| 645 |
static void pci_init_w1cmask(PCIDevice *dev) |
| 646 |
{
|
| 647 |
/*
|
| 648 |
* Note: It's okay to set w1cmask even for readonly bits as
|
| 649 |
* long as their value is hardwired to 0.
|
| 650 |
*/
|
| 651 |
pci_set_word(dev->w1cmask + PCI_STATUS, |
| 652 |
PCI_STATUS_PARITY | PCI_STATUS_SIG_TARGET_ABORT | |
| 653 |
PCI_STATUS_REC_TARGET_ABORT | PCI_STATUS_REC_MASTER_ABORT | |
| 654 |
PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_DETECTED_PARITY); |
| 655 |
} |
| 656 |
|
| 657 |
static void pci_init_mask_bridge(PCIDevice *d) |
| 658 |
{
|
| 659 |
/* PCI_PRIMARY_BUS, PCI_SECONDARY_BUS, PCI_SUBORDINATE_BUS and
|
| 660 |
PCI_SEC_LETENCY_TIMER */
|
| 661 |
memset(d->wmask + PCI_PRIMARY_BUS, 0xff, 4); |
| 662 |
|
| 663 |
/* base and limit */
|
| 664 |
d->wmask[PCI_IO_BASE] = PCI_IO_RANGE_MASK & 0xff;
|
| 665 |
d->wmask[PCI_IO_LIMIT] = PCI_IO_RANGE_MASK & 0xff;
|
| 666 |
pci_set_word(d->wmask + PCI_MEMORY_BASE, |
| 667 |
PCI_MEMORY_RANGE_MASK & 0xffff);
|
| 668 |
pci_set_word(d->wmask + PCI_MEMORY_LIMIT, |
| 669 |
PCI_MEMORY_RANGE_MASK & 0xffff);
|
| 670 |
pci_set_word(d->wmask + PCI_PREF_MEMORY_BASE, |
| 671 |
PCI_PREF_RANGE_MASK & 0xffff);
|
| 672 |
pci_set_word(d->wmask + PCI_PREF_MEMORY_LIMIT, |
| 673 |
PCI_PREF_RANGE_MASK & 0xffff);
|
| 674 |
|
| 675 |
/* PCI_PREF_BASE_UPPER32 and PCI_PREF_LIMIT_UPPER32 */
|
| 676 |
memset(d->wmask + PCI_PREF_BASE_UPPER32, 0xff, 8); |
| 677 |
|
| 678 |
/* Supported memory and i/o types */
|
| 679 |
d->config[PCI_IO_BASE] |= PCI_IO_RANGE_TYPE_16; |
| 680 |
d->config[PCI_IO_LIMIT] |= PCI_IO_RANGE_TYPE_16; |
| 681 |
pci_word_test_and_set_mask(d->config + PCI_PREF_MEMORY_BASE, |
| 682 |
PCI_PREF_RANGE_TYPE_64); |
| 683 |
pci_word_test_and_set_mask(d->config + PCI_PREF_MEMORY_LIMIT, |
| 684 |
PCI_PREF_RANGE_TYPE_64); |
| 685 |
|
| 686 |
/*
|
| 687 |
* TODO: Bridges default to 10-bit VGA decoding but we currently only
|
| 688 |
* implement 16-bit decoding (no alias support).
|
| 689 |
*/
|
| 690 |
pci_set_word(d->wmask + PCI_BRIDGE_CONTROL, |
| 691 |
PCI_BRIDGE_CTL_PARITY | |
| 692 |
PCI_BRIDGE_CTL_SERR | |
| 693 |
PCI_BRIDGE_CTL_ISA | |
| 694 |
PCI_BRIDGE_CTL_VGA | |
| 695 |
PCI_BRIDGE_CTL_VGA_16BIT | |
| 696 |
PCI_BRIDGE_CTL_MASTER_ABORT | |
| 697 |
PCI_BRIDGE_CTL_BUS_RESET | |
| 698 |
PCI_BRIDGE_CTL_FAST_BACK | |
| 699 |
PCI_BRIDGE_CTL_DISCARD | |
| 700 |
PCI_BRIDGE_CTL_SEC_DISCARD | |
| 701 |
PCI_BRIDGE_CTL_DISCARD_SERR); |
| 702 |
/* Below does not do anything as we never set this bit, put here for
|
| 703 |
* completeness. */
|
| 704 |
pci_set_word(d->w1cmask + PCI_BRIDGE_CONTROL, |
| 705 |
PCI_BRIDGE_CTL_DISCARD_STATUS); |
| 706 |
d->cmask[PCI_IO_BASE] |= PCI_IO_RANGE_TYPE_MASK; |
| 707 |
d->cmask[PCI_IO_LIMIT] |= PCI_IO_RANGE_TYPE_MASK; |
| 708 |
pci_word_test_and_set_mask(d->cmask + PCI_PREF_MEMORY_BASE, |
| 709 |
PCI_PREF_RANGE_TYPE_MASK); |
| 710 |
pci_word_test_and_set_mask(d->cmask + PCI_PREF_MEMORY_LIMIT, |
| 711 |
PCI_PREF_RANGE_TYPE_MASK); |
| 712 |
} |
| 713 |
|
| 714 |
static int pci_init_multifunction(PCIBus *bus, PCIDevice *dev) |
| 715 |
{
|
| 716 |
uint8_t slot = PCI_SLOT(dev->devfn); |
| 717 |
uint8_t func; |
| 718 |
|
| 719 |
if (dev->cap_present & QEMU_PCI_CAP_MULTIFUNCTION) {
|
| 720 |
dev->config[PCI_HEADER_TYPE] |= PCI_HEADER_TYPE_MULTI_FUNCTION; |
| 721 |
} |
| 722 |
|
| 723 |
/*
|
| 724 |
* multifunction bit is interpreted in two ways as follows.
|
| 725 |
* - all functions must set the bit to 1.
|
| 726 |
* Example: Intel X53
|
| 727 |
* - function 0 must set the bit, but the rest function (> 0)
|
| 728 |
* is allowed to leave the bit to 0.
|
| 729 |
* Example: PIIX3(also in qemu), PIIX4(also in qemu), ICH10,
|
| 730 |
*
|
| 731 |
* So OS (at least Linux) checks the bit of only function 0,
|
| 732 |
* and doesn't see the bit of function > 0.
|
| 733 |
*
|
| 734 |
* The below check allows both interpretation.
|
| 735 |
*/
|
| 736 |
if (PCI_FUNC(dev->devfn)) {
|
| 737 |
PCIDevice *f0 = bus->devices[PCI_DEVFN(slot, 0)];
|
| 738 |
if (f0 && !(f0->cap_present & QEMU_PCI_CAP_MULTIFUNCTION)) {
|
| 739 |
/* function 0 should set multifunction bit */
|
| 740 |
error_report("PCI: single function device can't be populated "
|
| 741 |
"in function %x.%x", slot, PCI_FUNC(dev->devfn));
|
| 742 |
return -1; |
| 743 |
} |
| 744 |
return 0; |
| 745 |
} |
| 746 |
|
| 747 |
if (dev->cap_present & QEMU_PCI_CAP_MULTIFUNCTION) {
|
| 748 |
return 0; |
| 749 |
} |
| 750 |
/* function 0 indicates single function, so function > 0 must be NULL */
|
| 751 |
for (func = 1; func < PCI_FUNC_MAX; ++func) { |
| 752 |
if (bus->devices[PCI_DEVFN(slot, func)]) {
|
| 753 |
error_report("PCI: %x.0 indicates single function, "
|
| 754 |
"but %x.%x is already populated.",
|
| 755 |
slot, slot, func); |
| 756 |
return -1; |
| 757 |
} |
| 758 |
} |
| 759 |
return 0; |
| 760 |
} |
| 761 |
|
| 762 |
static void pci_config_alloc(PCIDevice *pci_dev) |
| 763 |
{
|
| 764 |
int config_size = pci_config_size(pci_dev);
|
| 765 |
|
| 766 |
pci_dev->config = g_malloc0(config_size); |
| 767 |
pci_dev->cmask = g_malloc0(config_size); |
| 768 |
pci_dev->wmask = g_malloc0(config_size); |
| 769 |
pci_dev->w1cmask = g_malloc0(config_size); |
| 770 |
pci_dev->used = g_malloc0(config_size); |
| 771 |
} |
| 772 |
|
| 773 |
static void pci_config_free(PCIDevice *pci_dev) |
| 774 |
{
|
| 775 |
g_free(pci_dev->config); |
| 776 |
g_free(pci_dev->cmask); |
| 777 |
g_free(pci_dev->wmask); |
| 778 |
g_free(pci_dev->w1cmask); |
| 779 |
g_free(pci_dev->used); |
| 780 |
} |
| 781 |
|
| 782 |
/* -1 for devfn means auto assign */
|
| 783 |
static PCIDevice *do_pci_register_device(PCIDevice *pci_dev, PCIBus *bus,
|
| 784 |
const char *name, int devfn) |
| 785 |
{
|
| 786 |
PCIDeviceClass *pc = PCI_DEVICE_GET_CLASS(pci_dev); |
| 787 |
PCIConfigReadFunc *config_read = pc->config_read; |
| 788 |
PCIConfigWriteFunc *config_write = pc->config_write; |
| 789 |
AddressSpace *dma_as; |
| 790 |
|
| 791 |
if (devfn < 0) { |
| 792 |
for(devfn = bus->devfn_min ; devfn < ARRAY_SIZE(bus->devices);
|
| 793 |
devfn += PCI_FUNC_MAX) {
|
| 794 |
if (!bus->devices[devfn])
|
| 795 |
goto found;
|
| 796 |
} |
| 797 |
error_report("PCI: no slot/function available for %s, all in use", name);
|
| 798 |
return NULL; |
| 799 |
found: ;
|
| 800 |
} else if (bus->devices[devfn]) { |
| 801 |
error_report("PCI: slot %d function %d not available for %s, in use by %s",
|
| 802 |
PCI_SLOT(devfn), PCI_FUNC(devfn), name, bus->devices[devfn]->name); |
| 803 |
return NULL; |
| 804 |
} |
| 805 |
|
| 806 |
pci_dev->bus = bus; |
| 807 |
if (bus->iommu_fn) {
|
| 808 |
dma_as = bus->iommu_fn(bus, bus->iommu_opaque, devfn); |
| 809 |
} else {
|
| 810 |
/* FIXME: inherit memory region from bus creator */
|
| 811 |
dma_as = &address_space_memory; |
| 812 |
} |
| 813 |
|
| 814 |
memory_region_init_alias(&pci_dev->bus_master_enable_region, "bus master",
|
| 815 |
dma_as->root, 0, memory_region_size(dma_as->root));
|
| 816 |
memory_region_set_enabled(&pci_dev->bus_master_enable_region, false);
|
| 817 |
address_space_init(&pci_dev->bus_master_as, &pci_dev->bus_master_enable_region); |
| 818 |
|
| 819 |
pci_dev->devfn = devfn; |
| 820 |
pstrcpy(pci_dev->name, sizeof(pci_dev->name), name);
|
| 821 |
pci_dev->irq_state = 0;
|
| 822 |
pci_config_alloc(pci_dev); |
| 823 |
|
| 824 |
pci_config_set_vendor_id(pci_dev->config, pc->vendor_id); |
| 825 |
pci_config_set_device_id(pci_dev->config, pc->device_id); |
| 826 |
pci_config_set_revision(pci_dev->config, pc->revision); |
| 827 |
pci_config_set_class(pci_dev->config, pc->class_id); |
| 828 |
|
| 829 |
if (!pc->is_bridge) {
|
| 830 |
if (pc->subsystem_vendor_id || pc->subsystem_id) {
|
| 831 |
pci_set_word(pci_dev->config + PCI_SUBSYSTEM_VENDOR_ID, |
| 832 |
pc->subsystem_vendor_id); |
| 833 |
pci_set_word(pci_dev->config + PCI_SUBSYSTEM_ID, |
| 834 |
pc->subsystem_id); |
| 835 |
} else {
|
| 836 |
pci_set_default_subsystem_id(pci_dev); |
| 837 |
} |
| 838 |
} else {
|
| 839 |
/* subsystem_vendor_id/subsystem_id are only for header type 0 */
|
| 840 |
assert(!pc->subsystem_vendor_id); |
| 841 |
assert(!pc->subsystem_id); |
| 842 |
} |
| 843 |
pci_init_cmask(pci_dev); |
| 844 |
pci_init_wmask(pci_dev); |
| 845 |
pci_init_w1cmask(pci_dev); |
| 846 |
if (pc->is_bridge) {
|
| 847 |
pci_init_mask_bridge(pci_dev); |
| 848 |
} |
| 849 |
if (pci_init_multifunction(bus, pci_dev)) {
|
| 850 |
pci_config_free(pci_dev); |
| 851 |
return NULL; |
| 852 |
} |
| 853 |
|
| 854 |
if (!config_read)
|
| 855 |
config_read = pci_default_read_config; |
| 856 |
if (!config_write)
|
| 857 |
config_write = pci_default_write_config; |
| 858 |
pci_dev->config_read = config_read; |
| 859 |
pci_dev->config_write = config_write; |
| 860 |
bus->devices[devfn] = pci_dev; |
| 861 |
pci_dev->irq = qemu_allocate_irqs(pci_set_irq, pci_dev, PCI_NUM_PINS); |
| 862 |
pci_dev->version_id = 2; /* Current pci device vmstate version */ |
| 863 |
return pci_dev;
|
| 864 |
} |
| 865 |
|
| 866 |
static void do_pci_unregister_device(PCIDevice *pci_dev) |
| 867 |
{
|
| 868 |
qemu_free_irqs(pci_dev->irq); |
| 869 |
pci_dev->bus->devices[pci_dev->devfn] = NULL;
|
| 870 |
pci_config_free(pci_dev); |
| 871 |
|
| 872 |
address_space_destroy(&pci_dev->bus_master_as); |
| 873 |
memory_region_destroy(&pci_dev->bus_master_enable_region); |
| 874 |
} |
| 875 |
|
| 876 |
static void pci_unregister_io_regions(PCIDevice *pci_dev) |
| 877 |
{
|
| 878 |
PCIIORegion *r; |
| 879 |
int i;
|
| 880 |
|
| 881 |
for(i = 0; i < PCI_NUM_REGIONS; i++) { |
| 882 |
r = &pci_dev->io_regions[i]; |
| 883 |
if (!r->size || r->addr == PCI_BAR_UNMAPPED)
|
| 884 |
continue;
|
| 885 |
memory_region_del_subregion(r->address_space, r->memory); |
| 886 |
} |
| 887 |
|
| 888 |
pci_unregister_vga(pci_dev); |
| 889 |
} |
| 890 |
|
| 891 |
static int pci_unregister_device(DeviceState *dev) |
| 892 |
{
|
| 893 |
PCIDevice *pci_dev = PCI_DEVICE(dev); |
| 894 |
PCIDeviceClass *pc = PCI_DEVICE_GET_CLASS(pci_dev); |
| 895 |
|
| 896 |
pci_unregister_io_regions(pci_dev); |
| 897 |
pci_del_option_rom(pci_dev); |
| 898 |
|
| 899 |
if (pc->exit) {
|
| 900 |
pc->exit(pci_dev); |
| 901 |
} |
| 902 |
|
| 903 |
do_pci_unregister_device(pci_dev); |
| 904 |
return 0; |
| 905 |
} |
| 906 |
|
| 907 |
void pci_register_bar(PCIDevice *pci_dev, int region_num, |
| 908 |
uint8_t type, MemoryRegion *memory) |
| 909 |
{
|
| 910 |
PCIIORegion *r; |
| 911 |
uint32_t addr; |
| 912 |
uint64_t wmask; |
| 913 |
pcibus_t size = memory_region_size(memory); |
| 914 |
|
| 915 |
assert(region_num >= 0);
|
| 916 |
assert(region_num < PCI_NUM_REGIONS); |
| 917 |
if (size & (size-1)) { |
| 918 |
fprintf(stderr, "ERROR: PCI region size must be pow2 "
|
| 919 |
"type=0x%x, size=0x%"FMT_PCIBUS"\n", type, size); |
| 920 |
exit(1);
|
| 921 |
} |
| 922 |
|
| 923 |
r = &pci_dev->io_regions[region_num]; |
| 924 |
r->addr = PCI_BAR_UNMAPPED; |
| 925 |
r->size = size; |
| 926 |
r->type = type; |
| 927 |
r->memory = NULL;
|
| 928 |
|
| 929 |
wmask = ~(size - 1);
|
| 930 |
addr = pci_bar(pci_dev, region_num); |
| 931 |
if (region_num == PCI_ROM_SLOT) {
|
| 932 |
/* ROM enable bit is writable */
|
| 933 |
wmask |= PCI_ROM_ADDRESS_ENABLE; |
| 934 |
} |
| 935 |
pci_set_long(pci_dev->config + addr, type); |
| 936 |
if (!(r->type & PCI_BASE_ADDRESS_SPACE_IO) &&
|
| 937 |
r->type & PCI_BASE_ADDRESS_MEM_TYPE_64) {
|
| 938 |
pci_set_quad(pci_dev->wmask + addr, wmask); |
| 939 |
pci_set_quad(pci_dev->cmask + addr, ~0ULL);
|
| 940 |
} else {
|
| 941 |
pci_set_long(pci_dev->wmask + addr, wmask & 0xffffffff);
|
| 942 |
pci_set_long(pci_dev->cmask + addr, 0xffffffff);
|
| 943 |
} |
| 944 |
pci_dev->io_regions[region_num].memory = memory; |
| 945 |
pci_dev->io_regions[region_num].address_space |
| 946 |
= type & PCI_BASE_ADDRESS_SPACE_IO |
| 947 |
? pci_dev->bus->address_space_io |
| 948 |
: pci_dev->bus->address_space_mem; |
| 949 |
} |
| 950 |
|
| 951 |
static void pci_update_vga(PCIDevice *pci_dev) |
| 952 |
{
|
| 953 |
uint16_t cmd; |
| 954 |
|
| 955 |
if (!pci_dev->has_vga) {
|
| 956 |
return;
|
| 957 |
} |
| 958 |
|
| 959 |
cmd = pci_get_word(pci_dev->config + PCI_COMMAND); |
| 960 |
|
| 961 |
memory_region_set_enabled(pci_dev->vga_regions[QEMU_PCI_VGA_MEM], |
| 962 |
cmd & PCI_COMMAND_MEMORY); |
| 963 |
memory_region_set_enabled(pci_dev->vga_regions[QEMU_PCI_VGA_IO_LO], |
| 964 |
cmd & PCI_COMMAND_IO); |
| 965 |
memory_region_set_enabled(pci_dev->vga_regions[QEMU_PCI_VGA_IO_HI], |
| 966 |
cmd & PCI_COMMAND_IO); |
| 967 |
} |
| 968 |
|
| 969 |
void pci_register_vga(PCIDevice *pci_dev, MemoryRegion *mem,
|
| 970 |
MemoryRegion *io_lo, MemoryRegion *io_hi) |
| 971 |
{
|
| 972 |
assert(!pci_dev->has_vga); |
| 973 |
|
| 974 |
assert(memory_region_size(mem) == QEMU_PCI_VGA_MEM_SIZE); |
| 975 |
pci_dev->vga_regions[QEMU_PCI_VGA_MEM] = mem; |
| 976 |
memory_region_add_subregion_overlap(pci_dev->bus->address_space_mem, |
| 977 |
QEMU_PCI_VGA_MEM_BASE, mem, 1);
|
| 978 |
|
| 979 |
assert(memory_region_size(io_lo) == QEMU_PCI_VGA_IO_LO_SIZE); |
| 980 |
pci_dev->vga_regions[QEMU_PCI_VGA_IO_LO] = io_lo; |
| 981 |
memory_region_add_subregion_overlap(pci_dev->bus->address_space_io, |
| 982 |
QEMU_PCI_VGA_IO_LO_BASE, io_lo, 1);
|
| 983 |
|
| 984 |
assert(memory_region_size(io_hi) == QEMU_PCI_VGA_IO_HI_SIZE); |
| 985 |
pci_dev->vga_regions[QEMU_PCI_VGA_IO_HI] = io_hi; |
| 986 |
memory_region_add_subregion_overlap(pci_dev->bus->address_space_io, |
| 987 |
QEMU_PCI_VGA_IO_HI_BASE, io_hi, 1);
|
| 988 |
pci_dev->has_vga = true;
|
| 989 |
|
| 990 |
pci_update_vga(pci_dev); |
| 991 |
} |
| 992 |
|
| 993 |
void pci_unregister_vga(PCIDevice *pci_dev)
|
| 994 |
{
|
| 995 |
if (!pci_dev->has_vga) {
|
| 996 |
return;
|
| 997 |
} |
| 998 |
|
| 999 |
memory_region_del_subregion(pci_dev->bus->address_space_mem, |
| 1000 |
pci_dev->vga_regions[QEMU_PCI_VGA_MEM]); |
| 1001 |
memory_region_del_subregion(pci_dev->bus->address_space_io, |
| 1002 |
pci_dev->vga_regions[QEMU_PCI_VGA_IO_LO]); |
| 1003 |
memory_region_del_subregion(pci_dev->bus->address_space_io, |
| 1004 |
pci_dev->vga_regions[QEMU_PCI_VGA_IO_HI]); |
| 1005 |
pci_dev->has_vga = false;
|
| 1006 |
} |
| 1007 |
|
| 1008 |
pcibus_t pci_get_bar_addr(PCIDevice *pci_dev, int region_num)
|
| 1009 |
{
|
| 1010 |
return pci_dev->io_regions[region_num].addr;
|
| 1011 |
} |
| 1012 |
|
| 1013 |
static pcibus_t pci_bar_address(PCIDevice *d,
|
| 1014 |
int reg, uint8_t type, pcibus_t size)
|
| 1015 |
{
|
| 1016 |
pcibus_t new_addr, last_addr; |
| 1017 |
int bar = pci_bar(d, reg);
|
| 1018 |
uint16_t cmd = pci_get_word(d->config + PCI_COMMAND); |
| 1019 |
|
| 1020 |
if (type & PCI_BASE_ADDRESS_SPACE_IO) {
|
| 1021 |
if (!(cmd & PCI_COMMAND_IO)) {
|
| 1022 |
return PCI_BAR_UNMAPPED;
|
| 1023 |
} |
| 1024 |
new_addr = pci_get_long(d->config + bar) & ~(size - 1);
|
| 1025 |
last_addr = new_addr + size - 1;
|
| 1026 |
/* NOTE: we have only 64K ioports on PC */
|
| 1027 |
if (last_addr <= new_addr || new_addr == 0 || last_addr > UINT16_MAX) { |
| 1028 |
return PCI_BAR_UNMAPPED;
|
| 1029 |
} |
| 1030 |
return new_addr;
|
| 1031 |
} |
| 1032 |
|
| 1033 |
if (!(cmd & PCI_COMMAND_MEMORY)) {
|
| 1034 |
return PCI_BAR_UNMAPPED;
|
| 1035 |
} |
| 1036 |
if (type & PCI_BASE_ADDRESS_MEM_TYPE_64) {
|
| 1037 |
new_addr = pci_get_quad(d->config + bar); |
| 1038 |
} else {
|
| 1039 |
new_addr = pci_get_long(d->config + bar); |
| 1040 |
} |
| 1041 |
/* the ROM slot has a specific enable bit */
|
| 1042 |
if (reg == PCI_ROM_SLOT && !(new_addr & PCI_ROM_ADDRESS_ENABLE)) {
|
| 1043 |
return PCI_BAR_UNMAPPED;
|
| 1044 |
} |
| 1045 |
new_addr &= ~(size - 1);
|
| 1046 |
last_addr = new_addr + size - 1;
|
| 1047 |
/* NOTE: we do not support wrapping */
|
| 1048 |
/* XXX: as we cannot support really dynamic
|
| 1049 |
mappings, we handle specific values as invalid
|
| 1050 |
mappings. */
|
| 1051 |
if (last_addr <= new_addr || new_addr == 0 || |
| 1052 |
last_addr == PCI_BAR_UNMAPPED) {
|
| 1053 |
return PCI_BAR_UNMAPPED;
|
| 1054 |
} |
| 1055 |
|
| 1056 |
/* Now pcibus_t is 64bit.
|
| 1057 |
* Check if 32 bit BAR wraps around explicitly.
|
| 1058 |
* Without this, PC ide doesn't work well.
|
| 1059 |
* TODO: remove this work around.
|
| 1060 |
*/
|
| 1061 |
if (!(type & PCI_BASE_ADDRESS_MEM_TYPE_64) && last_addr >= UINT32_MAX) {
|
| 1062 |
return PCI_BAR_UNMAPPED;
|
| 1063 |
} |
| 1064 |
|
| 1065 |
/*
|
| 1066 |
* OS is allowed to set BAR beyond its addressable
|
| 1067 |
* bits. For example, 32 bit OS can set 64bit bar
|
| 1068 |
* to >4G. Check it. TODO: we might need to support
|
| 1069 |
* it in the future for e.g. PAE.
|
| 1070 |
*/
|
| 1071 |
if (last_addr >= HWADDR_MAX) {
|
| 1072 |
return PCI_BAR_UNMAPPED;
|
| 1073 |
} |
| 1074 |
|
| 1075 |
return new_addr;
|
| 1076 |
} |
| 1077 |
|
| 1078 |
static void pci_update_mappings(PCIDevice *d) |
| 1079 |
{
|
| 1080 |
PCIIORegion *r; |
| 1081 |
int i;
|
| 1082 |
pcibus_t new_addr; |
| 1083 |
|
| 1084 |
for(i = 0; i < PCI_NUM_REGIONS; i++) { |
| 1085 |
r = &d->io_regions[i]; |
| 1086 |
|
| 1087 |
/* this region isn't registered */
|
| 1088 |
if (!r->size)
|
| 1089 |
continue;
|
| 1090 |
|
| 1091 |
new_addr = pci_bar_address(d, i, r->type, r->size); |
| 1092 |
|
| 1093 |
/* This bar isn't changed */
|
| 1094 |
if (new_addr == r->addr)
|
| 1095 |
continue;
|
| 1096 |
|
| 1097 |
/* now do the real mapping */
|
| 1098 |
if (r->addr != PCI_BAR_UNMAPPED) {
|
| 1099 |
memory_region_del_subregion(r->address_space, r->memory); |
| 1100 |
} |
| 1101 |
r->addr = new_addr; |
| 1102 |
if (r->addr != PCI_BAR_UNMAPPED) {
|
| 1103 |
memory_region_add_subregion_overlap(r->address_space, |
| 1104 |
r->addr, r->memory, 1);
|
| 1105 |
} |
| 1106 |
} |
| 1107 |
|
| 1108 |
pci_update_vga(d); |
| 1109 |
} |
| 1110 |
|
| 1111 |
static inline int pci_irq_disabled(PCIDevice *d) |
| 1112 |
{
|
| 1113 |
return pci_get_word(d->config + PCI_COMMAND) & PCI_COMMAND_INTX_DISABLE;
|
| 1114 |
} |
| 1115 |
|
| 1116 |
/* Called after interrupt disabled field update in config space,
|
| 1117 |
* assert/deassert interrupts if necessary.
|
| 1118 |
* Gets original interrupt disable bit value (before update). */
|
| 1119 |
static void pci_update_irq_disabled(PCIDevice *d, int was_irq_disabled) |
| 1120 |
{
|
| 1121 |
int i, disabled = pci_irq_disabled(d);
|
| 1122 |
if (disabled == was_irq_disabled)
|
| 1123 |
return;
|
| 1124 |
for (i = 0; i < PCI_NUM_PINS; ++i) { |
| 1125 |
int state = pci_irq_state(d, i);
|
| 1126 |
pci_change_irq_level(d, i, disabled ? -state : state); |
| 1127 |
} |
| 1128 |
} |
| 1129 |
|
| 1130 |
uint32_t pci_default_read_config(PCIDevice *d, |
| 1131 |
uint32_t address, int len)
|
| 1132 |
{
|
| 1133 |
uint32_t val = 0;
|
| 1134 |
|
| 1135 |
memcpy(&val, d->config + address, len); |
| 1136 |
return le32_to_cpu(val);
|
| 1137 |
} |
| 1138 |
|
| 1139 |
void pci_default_write_config(PCIDevice *d, uint32_t addr, uint32_t val, int l) |
| 1140 |
{
|
| 1141 |
int i, was_irq_disabled = pci_irq_disabled(d);
|
| 1142 |
|
| 1143 |
for (i = 0; i < l; val >>= 8, ++i) { |
| 1144 |
uint8_t wmask = d->wmask[addr + i]; |
| 1145 |
uint8_t w1cmask = d->w1cmask[addr + i]; |
| 1146 |
assert(!(wmask & w1cmask)); |
| 1147 |
d->config[addr + i] = (d->config[addr + i] & ~wmask) | (val & wmask); |
| 1148 |
d->config[addr + i] &= ~(val & w1cmask); /* W1C: Write 1 to Clear */
|
| 1149 |
} |
| 1150 |
if (ranges_overlap(addr, l, PCI_BASE_ADDRESS_0, 24) || |
| 1151 |
ranges_overlap(addr, l, PCI_ROM_ADDRESS, 4) ||
|
| 1152 |
ranges_overlap(addr, l, PCI_ROM_ADDRESS1, 4) ||
|
| 1153 |
range_covers_byte(addr, l, PCI_COMMAND)) |
| 1154 |
pci_update_mappings(d); |
| 1155 |
|
| 1156 |
if (range_covers_byte(addr, l, PCI_COMMAND)) {
|
| 1157 |
pci_update_irq_disabled(d, was_irq_disabled); |
| 1158 |
memory_region_set_enabled(&d->bus_master_enable_region, |
| 1159 |
pci_get_word(d->config + PCI_COMMAND) |
| 1160 |
& PCI_COMMAND_MASTER); |
| 1161 |
} |
| 1162 |
|
| 1163 |
msi_write_config(d, addr, val, l); |
| 1164 |
msix_write_config(d, addr, val, l); |
| 1165 |
} |
| 1166 |
|
| 1167 |
/***********************************************************/
|
| 1168 |
/* generic PCI irq support */
|
| 1169 |
|
| 1170 |
/* 0 <= irq_num <= 3. level must be 0 or 1 */
|
| 1171 |
static void pci_set_irq(void *opaque, int irq_num, int level) |
| 1172 |
{
|
| 1173 |
PCIDevice *pci_dev = opaque; |
| 1174 |
int change;
|
| 1175 |
|
| 1176 |
change = level - pci_irq_state(pci_dev, irq_num); |
| 1177 |
if (!change)
|
| 1178 |
return;
|
| 1179 |
|
| 1180 |
pci_set_irq_state(pci_dev, irq_num, level); |
| 1181 |
pci_update_irq_status(pci_dev); |
| 1182 |
if (pci_irq_disabled(pci_dev))
|
| 1183 |
return;
|
| 1184 |
pci_change_irq_level(pci_dev, irq_num, change); |
| 1185 |
} |
| 1186 |
|
| 1187 |
/* Special hooks used by device assignment */
|
| 1188 |
void pci_bus_set_route_irq_fn(PCIBus *bus, pci_route_irq_fn route_intx_to_irq)
|
| 1189 |
{
|
| 1190 |
assert(pci_bus_is_root(bus)); |
| 1191 |
bus->route_intx_to_irq = route_intx_to_irq; |
| 1192 |
} |
| 1193 |
|
| 1194 |
PCIINTxRoute pci_device_route_intx_to_irq(PCIDevice *dev, int pin)
|
| 1195 |
{
|
| 1196 |
PCIBus *bus; |
| 1197 |
|
| 1198 |
do {
|
| 1199 |
bus = dev->bus; |
| 1200 |
pin = bus->map_irq(dev, pin); |
| 1201 |
dev = bus->parent_dev; |
| 1202 |
} while (dev);
|
| 1203 |
|
| 1204 |
if (!bus->route_intx_to_irq) {
|
| 1205 |
error_report("PCI: Bug - unimplemented PCI INTx routing (%s)",
|
| 1206 |
object_get_typename(OBJECT(bus->qbus.parent))); |
| 1207 |
return (PCIINTxRoute) { PCI_INTX_DISABLED, -1 }; |
| 1208 |
} |
| 1209 |
|
| 1210 |
return bus->route_intx_to_irq(bus->irq_opaque, pin);
|
| 1211 |
} |
| 1212 |
|
| 1213 |
bool pci_intx_route_changed(PCIINTxRoute *old, PCIINTxRoute *new)
|
| 1214 |
{
|
| 1215 |
return old->mode != new->mode || old->irq != new->irq;
|
| 1216 |
} |
| 1217 |
|
| 1218 |
void pci_bus_fire_intx_routing_notifier(PCIBus *bus)
|
| 1219 |
{
|
| 1220 |
PCIDevice *dev; |
| 1221 |
PCIBus *sec; |
| 1222 |
int i;
|
| 1223 |
|
| 1224 |
for (i = 0; i < ARRAY_SIZE(bus->devices); ++i) { |
| 1225 |
dev = bus->devices[i]; |
| 1226 |
if (dev && dev->intx_routing_notifier) {
|
| 1227 |
dev->intx_routing_notifier(dev); |
| 1228 |
} |
| 1229 |
} |
| 1230 |
|
| 1231 |
QLIST_FOREACH(sec, &bus->child, sibling) {
|
| 1232 |
pci_bus_fire_intx_routing_notifier(sec); |
| 1233 |
} |
| 1234 |
} |
| 1235 |
|
| 1236 |
void pci_device_set_intx_routing_notifier(PCIDevice *dev,
|
| 1237 |
PCIINTxRoutingNotifier notifier) |
| 1238 |
{
|
| 1239 |
dev->intx_routing_notifier = notifier; |
| 1240 |
} |
| 1241 |
|
| 1242 |
/*
|
| 1243 |
* PCI-to-PCI bridge specification
|
| 1244 |
* 9.1: Interrupt routing. Table 9-1
|
| 1245 |
*
|
| 1246 |
* the PCI Express Base Specification, Revision 2.1
|
| 1247 |
* 2.2.8.1: INTx interrutp signaling - Rules
|
| 1248 |
* the Implementation Note
|
| 1249 |
* Table 2-20
|
| 1250 |
*/
|
| 1251 |
/*
|
| 1252 |
* 0 <= pin <= 3 0 = INTA, 1 = INTB, 2 = INTC, 3 = INTD
|
| 1253 |
* 0-origin unlike PCI interrupt pin register.
|
| 1254 |
*/
|
| 1255 |
int pci_swizzle_map_irq_fn(PCIDevice *pci_dev, int pin) |
| 1256 |
{
|
| 1257 |
return (pin + PCI_SLOT(pci_dev->devfn)) % PCI_NUM_PINS;
|
| 1258 |
} |
| 1259 |
|
| 1260 |
/***********************************************************/
|
| 1261 |
/* monitor info on PCI */
|
| 1262 |
|
| 1263 |
typedef struct { |
| 1264 |
uint16_t class; |
| 1265 |
const char *desc; |
| 1266 |
const char *fw_name; |
| 1267 |
uint16_t fw_ign_bits; |
| 1268 |
} pci_class_desc; |
| 1269 |
|
| 1270 |
static const pci_class_desc pci_class_descriptions[] = |
| 1271 |
{
|
| 1272 |
{ 0x0001, "VGA controller", "display"},
|
| 1273 |
{ 0x0100, "SCSI controller", "scsi"},
|
| 1274 |
{ 0x0101, "IDE controller", "ide"},
|
| 1275 |
{ 0x0102, "Floppy controller", "fdc"},
|
| 1276 |
{ 0x0103, "IPI controller", "ipi"},
|
| 1277 |
{ 0x0104, "RAID controller", "raid"},
|
| 1278 |
{ 0x0106, "SATA controller"},
|
| 1279 |
{ 0x0107, "SAS controller"},
|
| 1280 |
{ 0x0180, "Storage controller"},
|
| 1281 |
{ 0x0200, "Ethernet controller", "ethernet"},
|
| 1282 |
{ 0x0201, "Token Ring controller", "token-ring"},
|
| 1283 |
{ 0x0202, "FDDI controller", "fddi"},
|
| 1284 |
{ 0x0203, "ATM controller", "atm"},
|
| 1285 |
{ 0x0280, "Network controller"},
|
| 1286 |
{ 0x0300, "VGA controller", "display", 0x00ff},
|
| 1287 |
{ 0x0301, "XGA controller"},
|
| 1288 |
{ 0x0302, "3D controller"},
|
| 1289 |
{ 0x0380, "Display controller"},
|
| 1290 |
{ 0x0400, "Video controller", "video"},
|
| 1291 |
{ 0x0401, "Audio controller", "sound"},
|
| 1292 |
{ 0x0402, "Phone"},
|
| 1293 |
{ 0x0403, "Audio controller", "sound"},
|
| 1294 |
{ 0x0480, "Multimedia controller"},
|
| 1295 |
{ 0x0500, "RAM controller", "memory"},
|
| 1296 |
{ 0x0501, "Flash controller", "flash"},
|
| 1297 |
{ 0x0580, "Memory controller"},
|
| 1298 |
{ 0x0600, "Host bridge", "host"},
|
| 1299 |
{ 0x0601, "ISA bridge", "isa"},
|
| 1300 |
{ 0x0602, "EISA bridge", "eisa"},
|
| 1301 |
{ 0x0603, "MC bridge", "mca"},
|
| 1302 |
{ 0x0604, "PCI bridge", "pci"},
|
| 1303 |
{ 0x0605, "PCMCIA bridge", "pcmcia"},
|
| 1304 |
{ 0x0606, "NUBUS bridge", "nubus"},
|
| 1305 |
{ 0x0607, "CARDBUS bridge", "cardbus"},
|
| 1306 |
{ 0x0608, "RACEWAY bridge"},
|
| 1307 |
{ 0x0680, "Bridge"},
|
| 1308 |
{ 0x0700, "Serial port", "serial"},
|
| 1309 |
{ 0x0701, "Parallel port", "parallel"},
|
| 1310 |
{ 0x0800, "Interrupt controller", "interrupt-controller"},
|
| 1311 |
{ 0x0801, "DMA controller", "dma-controller"},
|
| 1312 |
{ 0x0802, "Timer", "timer"},
|
| 1313 |
{ 0x0803, "RTC", "rtc"},
|
| 1314 |
{ 0x0900, "Keyboard", "keyboard"},
|
| 1315 |
{ 0x0901, "Pen", "pen"},
|
| 1316 |
{ 0x0902, "Mouse", "mouse"},
|
| 1317 |
{ 0x0A00, "Dock station", "dock", 0x00ff},
|
| 1318 |
{ 0x0B00, "i386 cpu", "cpu", 0x00ff},
|
| 1319 |
{ 0x0c00, "Fireware contorller", "fireware"},
|
| 1320 |
{ 0x0c01, "Access bus controller", "access-bus"},
|
| 1321 |
{ 0x0c02, "SSA controller", "ssa"},
|
| 1322 |
{ 0x0c03, "USB controller", "usb"},
|
| 1323 |
{ 0x0c04, "Fibre channel controller", "fibre-channel"},
|
| 1324 |
{ 0x0c05, "SMBus"},
|
| 1325 |
{ 0, NULL}
|
| 1326 |
}; |
| 1327 |
|
| 1328 |
static void pci_for_each_device_under_bus(PCIBus *bus, |
| 1329 |
void (*fn)(PCIBus *b, PCIDevice *d,
|
| 1330 |
void *opaque),
|
| 1331 |
void *opaque)
|
| 1332 |
{
|
| 1333 |
PCIDevice *d; |
| 1334 |
int devfn;
|
| 1335 |
|
| 1336 |
for(devfn = 0; devfn < ARRAY_SIZE(bus->devices); devfn++) { |
| 1337 |
d = bus->devices[devfn]; |
| 1338 |
if (d) {
|
| 1339 |
fn(bus, d, opaque); |
| 1340 |
} |
| 1341 |
} |
| 1342 |
} |
| 1343 |
|
| 1344 |
void pci_for_each_device(PCIBus *bus, int bus_num, |
| 1345 |
void (*fn)(PCIBus *b, PCIDevice *d, void *opaque), |
| 1346 |
void *opaque)
|
| 1347 |
{
|
| 1348 |
bus = pci_find_bus_nr(bus, bus_num); |
| 1349 |
|
| 1350 |
if (bus) {
|
| 1351 |
pci_for_each_device_under_bus(bus, fn, opaque); |
| 1352 |
} |
| 1353 |
} |
| 1354 |
|
| 1355 |
static const pci_class_desc *get_class_desc(int class) |
| 1356 |
{
|
| 1357 |
const pci_class_desc *desc;
|
| 1358 |
|
| 1359 |
desc = pci_class_descriptions; |
| 1360 |
while (desc->desc && class != desc->class) {
|
| 1361 |
desc++; |
| 1362 |
} |
| 1363 |
|
| 1364 |
return desc;
|
| 1365 |
} |
| 1366 |
|
| 1367 |
static PciDeviceInfoList *qmp_query_pci_devices(PCIBus *bus, int bus_num); |
| 1368 |
|
| 1369 |
static PciMemoryRegionList *qmp_query_pci_regions(const PCIDevice *dev) |
| 1370 |
{
|
| 1371 |
PciMemoryRegionList *head = NULL, *cur_item = NULL; |
| 1372 |
int i;
|
| 1373 |
|
| 1374 |
for (i = 0; i < PCI_NUM_REGIONS; i++) { |
| 1375 |
const PCIIORegion *r = &dev->io_regions[i];
|
| 1376 |
PciMemoryRegionList *region; |
| 1377 |
|
| 1378 |
if (!r->size) {
|
| 1379 |
continue;
|
| 1380 |
} |
| 1381 |
|
| 1382 |
region = g_malloc0(sizeof(*region));
|
| 1383 |
region->value = g_malloc0(sizeof(*region->value));
|
| 1384 |
|
| 1385 |
if (r->type & PCI_BASE_ADDRESS_SPACE_IO) {
|
| 1386 |
region->value->type = g_strdup("io");
|
| 1387 |
} else {
|
| 1388 |
region->value->type = g_strdup("memory");
|
| 1389 |
region->value->has_prefetch = true;
|
| 1390 |
region->value->prefetch = !!(r->type & PCI_BASE_ADDRESS_MEM_PREFETCH); |
| 1391 |
region->value->has_mem_type_64 = true;
|
| 1392 |
region->value->mem_type_64 = !!(r->type & PCI_BASE_ADDRESS_MEM_TYPE_64); |
| 1393 |
} |
| 1394 |
|
| 1395 |
region->value->bar = i; |
| 1396 |
region->value->address = r->addr; |
| 1397 |
region->value->size = r->size; |
| 1398 |
|
| 1399 |
/* XXX: waiting for the qapi to support GSList */
|
| 1400 |
if (!cur_item) {
|
| 1401 |
head = cur_item = region; |
| 1402 |
} else {
|
| 1403 |
cur_item->next = region; |
| 1404 |
cur_item = region; |
| 1405 |
} |
| 1406 |
} |
| 1407 |
|
| 1408 |
return head;
|
| 1409 |
} |
| 1410 |
|
| 1411 |
static PciBridgeInfo *qmp_query_pci_bridge(PCIDevice *dev, PCIBus *bus,
|
| 1412 |
int bus_num)
|
| 1413 |
{
|
| 1414 |
PciBridgeInfo *info; |
| 1415 |
|
| 1416 |
info = g_malloc0(sizeof(*info));
|
| 1417 |
|
| 1418 |
info->bus.number = dev->config[PCI_PRIMARY_BUS]; |
| 1419 |
info->bus.secondary = dev->config[PCI_SECONDARY_BUS]; |
| 1420 |
info->bus.subordinate = dev->config[PCI_SUBORDINATE_BUS]; |
| 1421 |
|
| 1422 |
info->bus.io_range = g_malloc0(sizeof(*info->bus.io_range));
|
| 1423 |
info->bus.io_range->base = pci_bridge_get_base(dev, PCI_BASE_ADDRESS_SPACE_IO); |
| 1424 |
info->bus.io_range->limit = pci_bridge_get_limit(dev, PCI_BASE_ADDRESS_SPACE_IO); |
| 1425 |
|
| 1426 |
info->bus.memory_range = g_malloc0(sizeof(*info->bus.memory_range));
|
| 1427 |
info->bus.memory_range->base = pci_bridge_get_base(dev, PCI_BASE_ADDRESS_SPACE_MEMORY); |
| 1428 |
info->bus.memory_range->limit = pci_bridge_get_limit(dev, PCI_BASE_ADDRESS_SPACE_MEMORY); |
| 1429 |
|
| 1430 |
info->bus.prefetchable_range = g_malloc0(sizeof(*info->bus.prefetchable_range));
|
| 1431 |
info->bus.prefetchable_range->base = pci_bridge_get_base(dev, PCI_BASE_ADDRESS_MEM_PREFETCH); |
| 1432 |
info->bus.prefetchable_range->limit = pci_bridge_get_limit(dev, PCI_BASE_ADDRESS_MEM_PREFETCH); |
| 1433 |
|
| 1434 |
if (dev->config[PCI_SECONDARY_BUS] != 0) { |
| 1435 |
PCIBus *child_bus = pci_find_bus_nr(bus, dev->config[PCI_SECONDARY_BUS]); |
| 1436 |
if (child_bus) {
|
| 1437 |
info->has_devices = true;
|
| 1438 |
info->devices = qmp_query_pci_devices(child_bus, dev->config[PCI_SECONDARY_BUS]); |
| 1439 |
} |
| 1440 |
} |
| 1441 |
|
| 1442 |
return info;
|
| 1443 |
} |
| 1444 |
|
| 1445 |
static PciDeviceInfo *qmp_query_pci_device(PCIDevice *dev, PCIBus *bus,
|
| 1446 |
int bus_num)
|
| 1447 |
{
|
| 1448 |
const pci_class_desc *desc;
|
| 1449 |
PciDeviceInfo *info; |
| 1450 |
uint8_t type; |
| 1451 |
int class;
|
| 1452 |
|
| 1453 |
info = g_malloc0(sizeof(*info));
|
| 1454 |
info->bus = bus_num; |
| 1455 |
info->slot = PCI_SLOT(dev->devfn); |
| 1456 |
info->function = PCI_FUNC(dev->devfn); |
| 1457 |
|
| 1458 |
class = pci_get_word(dev->config + PCI_CLASS_DEVICE); |
| 1459 |
info->class_info.class = class; |
| 1460 |
desc = get_class_desc(class); |
| 1461 |
if (desc->desc) {
|
| 1462 |
info->class_info.has_desc = true;
|
| 1463 |
info->class_info.desc = g_strdup(desc->desc); |
| 1464 |
} |
| 1465 |
|
| 1466 |
info->id.vendor = pci_get_word(dev->config + PCI_VENDOR_ID); |
| 1467 |
info->id.device = pci_get_word(dev->config + PCI_DEVICE_ID); |
| 1468 |
info->regions = qmp_query_pci_regions(dev); |
| 1469 |
info->qdev_id = g_strdup(dev->qdev.id ? dev->qdev.id : "");
|
| 1470 |
|
| 1471 |
if (dev->config[PCI_INTERRUPT_PIN] != 0) { |
| 1472 |
info->has_irq = true;
|
| 1473 |
info->irq = dev->config[PCI_INTERRUPT_LINE]; |
| 1474 |
} |
| 1475 |
|
| 1476 |
type = dev->config[PCI_HEADER_TYPE] & ~PCI_HEADER_TYPE_MULTI_FUNCTION; |
| 1477 |
if (type == PCI_HEADER_TYPE_BRIDGE) {
|
| 1478 |
info->has_pci_bridge = true;
|
| 1479 |
info->pci_bridge = qmp_query_pci_bridge(dev, bus, bus_num); |
| 1480 |
} |
| 1481 |
|
| 1482 |
return info;
|
| 1483 |
} |
| 1484 |
|
| 1485 |
static PciDeviceInfoList *qmp_query_pci_devices(PCIBus *bus, int bus_num) |
| 1486 |
{
|
| 1487 |
PciDeviceInfoList *info, *head = NULL, *cur_item = NULL; |
| 1488 |
PCIDevice *dev; |
| 1489 |
int devfn;
|
| 1490 |
|
| 1491 |
for (devfn = 0; devfn < ARRAY_SIZE(bus->devices); devfn++) { |
| 1492 |
dev = bus->devices[devfn]; |
| 1493 |
if (dev) {
|
| 1494 |
info = g_malloc0(sizeof(*info));
|
| 1495 |
info->value = qmp_query_pci_device(dev, bus, bus_num); |
| 1496 |
|
| 1497 |
/* XXX: waiting for the qapi to support GSList */
|
| 1498 |
if (!cur_item) {
|
| 1499 |
head = cur_item = info; |
| 1500 |
} else {
|
| 1501 |
cur_item->next = info; |
| 1502 |
cur_item = info; |
| 1503 |
} |
| 1504 |
} |
| 1505 |
} |
| 1506 |
|
| 1507 |
return head;
|
| 1508 |
} |
| 1509 |
|
| 1510 |
static PciInfo *qmp_query_pci_bus(PCIBus *bus, int bus_num) |
| 1511 |
{
|
| 1512 |
PciInfo *info = NULL;
|
| 1513 |
|
| 1514 |
bus = pci_find_bus_nr(bus, bus_num); |
| 1515 |
if (bus) {
|
| 1516 |
info = g_malloc0(sizeof(*info));
|
| 1517 |
info->bus = bus_num; |
| 1518 |
info->devices = qmp_query_pci_devices(bus, bus_num); |
| 1519 |
} |
| 1520 |
|
| 1521 |
return info;
|
| 1522 |
} |
| 1523 |
|
| 1524 |
PciInfoList *qmp_query_pci(Error **errp) |
| 1525 |
{
|
| 1526 |
PciInfoList *info, *head = NULL, *cur_item = NULL; |
| 1527 |
struct PCIHostBus *host;
|
| 1528 |
|
| 1529 |
QLIST_FOREACH(host, &host_buses, next) {
|
| 1530 |
info = g_malloc0(sizeof(*info));
|
| 1531 |
info->value = qmp_query_pci_bus(host->bus, 0);
|
| 1532 |
|
| 1533 |
/* XXX: waiting for the qapi to support GSList */
|
| 1534 |
if (!cur_item) {
|
| 1535 |
head = cur_item = info; |
| 1536 |
} else {
|
| 1537 |
cur_item->next = info; |
| 1538 |
cur_item = info; |
| 1539 |
} |
| 1540 |
} |
| 1541 |
|
| 1542 |
return head;
|
| 1543 |
} |
| 1544 |
|
| 1545 |
static const char * const pci_nic_models[] = { |
| 1546 |
"ne2k_pci",
|
| 1547 |
"i82551",
|
| 1548 |
"i82557b",
|
| 1549 |
"i82559er",
|
| 1550 |
"rtl8139",
|
| 1551 |
"e1000",
|
| 1552 |
"pcnet",
|
| 1553 |
"virtio",
|
| 1554 |
NULL
|
| 1555 |
}; |
| 1556 |
|
| 1557 |
static const char * const pci_nic_names[] = { |
| 1558 |
"ne2k_pci",
|
| 1559 |
"i82551",
|
| 1560 |
"i82557b",
|
| 1561 |
"i82559er",
|
| 1562 |
"rtl8139",
|
| 1563 |
"e1000",
|
| 1564 |
"pcnet",
|
| 1565 |
"virtio-net-pci",
|
| 1566 |
NULL
|
| 1567 |
}; |
| 1568 |
|
| 1569 |
/* Initialize a PCI NIC. */
|
| 1570 |
/* FIXME callers should check for failure, but don't */
|
| 1571 |
PCIDevice *pci_nic_init(NICInfo *nd, const char *default_model, |
| 1572 |
const char *default_devaddr) |
| 1573 |
{
|
| 1574 |
const char *devaddr = nd->devaddr ? nd->devaddr : default_devaddr; |
| 1575 |
PCIBus *bus; |
| 1576 |
int devfn;
|
| 1577 |
PCIDevice *pci_dev; |
| 1578 |
DeviceState *dev; |
| 1579 |
int i;
|
| 1580 |
|
| 1581 |
i = qemu_find_nic_model(nd, pci_nic_models, default_model); |
| 1582 |
if (i < 0) |
| 1583 |
return NULL; |
| 1584 |
|
| 1585 |
bus = pci_get_bus_devfn(&devfn, devaddr); |
| 1586 |
if (!bus) {
|
| 1587 |
error_report("Invalid PCI device address %s for device %s",
|
| 1588 |
devaddr, pci_nic_names[i]); |
| 1589 |
return NULL; |
| 1590 |
} |
| 1591 |
|
| 1592 |
pci_dev = pci_create(bus, devfn, pci_nic_names[i]); |
| 1593 |
dev = &pci_dev->qdev; |
| 1594 |
qdev_set_nic_properties(dev, nd); |
| 1595 |
if (qdev_init(dev) < 0) |
| 1596 |
return NULL; |
| 1597 |
return pci_dev;
|
| 1598 |
} |
| 1599 |
|
| 1600 |
PCIDevice *pci_nic_init_nofail(NICInfo *nd, const char *default_model, |
| 1601 |
const char *default_devaddr) |
| 1602 |
{
|
| 1603 |
PCIDevice *res; |
| 1604 |
|
| 1605 |
if (qemu_show_nic_models(nd->model, pci_nic_models))
|
| 1606 |
exit(0);
|
| 1607 |
|
| 1608 |
res = pci_nic_init(nd, default_model, default_devaddr); |
| 1609 |
if (!res)
|
| 1610 |
exit(1);
|
| 1611 |
return res;
|
| 1612 |
} |
| 1613 |
|
| 1614 |
PCIDevice *pci_vga_init(PCIBus *bus) |
| 1615 |
{
|
| 1616 |
switch (vga_interface_type) {
|
| 1617 |
case VGA_CIRRUS:
|
| 1618 |
return pci_create_simple(bus, -1, "cirrus-vga"); |
| 1619 |
case VGA_QXL:
|
| 1620 |
return pci_create_simple(bus, -1, "qxl-vga"); |
| 1621 |
case VGA_STD:
|
| 1622 |
return pci_create_simple(bus, -1, "VGA"); |
| 1623 |
case VGA_VMWARE:
|
| 1624 |
return pci_create_simple(bus, -1, "vmware-svga"); |
| 1625 |
case VGA_NONE:
|
| 1626 |
default: /* Other non-PCI types. Checking for unsupported types is already |
| 1627 |
done in vl.c. */
|
| 1628 |
return NULL; |
| 1629 |
} |
| 1630 |
} |
| 1631 |
|
| 1632 |
/* Whether a given bus number is in range of the secondary
|
| 1633 |
* bus of the given bridge device. */
|
| 1634 |
static bool pci_secondary_bus_in_range(PCIDevice *dev, int bus_num) |
| 1635 |
{
|
| 1636 |
return !(pci_get_word(dev->config + PCI_BRIDGE_CONTROL) &
|
| 1637 |
PCI_BRIDGE_CTL_BUS_RESET) /* Don't walk the bus if it's reset. */ &&
|
| 1638 |
dev->config[PCI_SECONDARY_BUS] < bus_num && |
| 1639 |
bus_num <= dev->config[PCI_SUBORDINATE_BUS]; |
| 1640 |
} |
| 1641 |
|
| 1642 |
static PCIBus *pci_find_bus_nr(PCIBus *bus, int bus_num) |
| 1643 |
{
|
| 1644 |
PCIBus *sec; |
| 1645 |
|
| 1646 |
if (!bus) {
|
| 1647 |
return NULL; |
| 1648 |
} |
| 1649 |
|
| 1650 |
if (pci_bus_num(bus) == bus_num) {
|
| 1651 |
return bus;
|
| 1652 |
} |
| 1653 |
|
| 1654 |
/* Consider all bus numbers in range for the host pci bridge. */
|
| 1655 |
if (!pci_bus_is_root(bus) &&
|
| 1656 |
!pci_secondary_bus_in_range(bus->parent_dev, bus_num)) {
|
| 1657 |
return NULL; |
| 1658 |
} |
| 1659 |
|
| 1660 |
/* try child bus */
|
| 1661 |
for (; bus; bus = sec) {
|
| 1662 |
QLIST_FOREACH(sec, &bus->child, sibling) {
|
| 1663 |
assert(!pci_bus_is_root(sec)); |
| 1664 |
if (sec->parent_dev->config[PCI_SECONDARY_BUS] == bus_num) {
|
| 1665 |
return sec;
|
| 1666 |
} |
| 1667 |
if (pci_secondary_bus_in_range(sec->parent_dev, bus_num)) {
|
| 1668 |
break;
|
| 1669 |
} |
| 1670 |
} |
| 1671 |
} |
| 1672 |
|
| 1673 |
return NULL; |
| 1674 |
} |
| 1675 |
|
| 1676 |
PCIDevice *pci_find_device(PCIBus *bus, int bus_num, uint8_t devfn)
|
| 1677 |
{
|
| 1678 |
bus = pci_find_bus_nr(bus, bus_num); |
| 1679 |
|
| 1680 |
if (!bus)
|
| 1681 |
return NULL; |
| 1682 |
|
| 1683 |
return bus->devices[devfn];
|
| 1684 |
} |
| 1685 |
|
| 1686 |
static int pci_qdev_init(DeviceState *qdev) |
| 1687 |
{
|
| 1688 |
PCIDevice *pci_dev = (PCIDevice *)qdev; |
| 1689 |
PCIDeviceClass *pc = PCI_DEVICE_GET_CLASS(pci_dev); |
| 1690 |
PCIBus *bus; |
| 1691 |
int rc;
|
| 1692 |
bool is_default_rom;
|
| 1693 |
|
| 1694 |
/* initialize cap_present for pci_is_express() and pci_config_size() */
|
| 1695 |
if (pc->is_express) {
|
| 1696 |
pci_dev->cap_present |= QEMU_PCI_CAP_EXPRESS; |
| 1697 |
} |
| 1698 |
|
| 1699 |
bus = PCI_BUS(qdev_get_parent_bus(qdev)); |
| 1700 |
pci_dev = do_pci_register_device(pci_dev, bus, |
| 1701 |
object_get_typename(OBJECT(qdev)), |
| 1702 |
pci_dev->devfn); |
| 1703 |
if (pci_dev == NULL) |
| 1704 |
return -1; |
| 1705 |
if (qdev->hotplugged && pc->no_hotplug) {
|
| 1706 |
qerror_report(QERR_DEVICE_NO_HOTPLUG, object_get_typename(OBJECT(pci_dev))); |
| 1707 |
do_pci_unregister_device(pci_dev); |
| 1708 |
return -1; |
| 1709 |
} |
| 1710 |
if (pc->init) {
|
| 1711 |
rc = pc->init(pci_dev); |
| 1712 |
if (rc != 0) { |
| 1713 |
do_pci_unregister_device(pci_dev); |
| 1714 |
return rc;
|
| 1715 |
} |
| 1716 |
} |
| 1717 |
|
| 1718 |
/* rom loading */
|
| 1719 |
is_default_rom = false;
|
| 1720 |
if (pci_dev->romfile == NULL && pc->romfile != NULL) { |
| 1721 |
pci_dev->romfile = g_strdup(pc->romfile); |
| 1722 |
is_default_rom = true;
|
| 1723 |
} |
| 1724 |
pci_add_option_rom(pci_dev, is_default_rom); |
| 1725 |
|
| 1726 |
if (bus->hotplug) {
|
| 1727 |
/* Let buses differentiate between hotplug and when device is
|
| 1728 |
* enabled during qemu machine creation. */
|
| 1729 |
rc = bus->hotplug(bus->hotplug_qdev, pci_dev, |
| 1730 |
qdev->hotplugged ? PCI_HOTPLUG_ENABLED: |
| 1731 |
PCI_COLDPLUG_ENABLED); |
| 1732 |
if (rc != 0) { |
| 1733 |
int r = pci_unregister_device(&pci_dev->qdev);
|
| 1734 |
assert(!r); |
| 1735 |
return rc;
|
| 1736 |
} |
| 1737 |
} |
| 1738 |
return 0; |
| 1739 |
} |
| 1740 |
|
| 1741 |
static int pci_unplug_device(DeviceState *qdev) |
| 1742 |
{
|
| 1743 |
PCIDevice *dev = PCI_DEVICE(qdev); |
| 1744 |
PCIDeviceClass *pc = PCI_DEVICE_GET_CLASS(dev); |
| 1745 |
|
| 1746 |
if (pc->no_hotplug) {
|
| 1747 |
qerror_report(QERR_DEVICE_NO_HOTPLUG, object_get_typename(OBJECT(dev))); |
| 1748 |
return -1; |
| 1749 |
} |
| 1750 |
return dev->bus->hotplug(dev->bus->hotplug_qdev, dev,
|
| 1751 |
PCI_HOTPLUG_DISABLED); |
| 1752 |
} |
| 1753 |
|
| 1754 |
PCIDevice *pci_create_multifunction(PCIBus *bus, int devfn, bool multifunction, |
| 1755 |
const char *name) |
| 1756 |
{
|
| 1757 |
DeviceState *dev; |
| 1758 |
|
| 1759 |
dev = qdev_create(&bus->qbus, name); |
| 1760 |
qdev_prop_set_int32(dev, "addr", devfn);
|
| 1761 |
qdev_prop_set_bit(dev, "multifunction", multifunction);
|
| 1762 |
return PCI_DEVICE(dev);
|
| 1763 |
} |
| 1764 |
|
| 1765 |
PCIDevice *pci_create_simple_multifunction(PCIBus *bus, int devfn,
|
| 1766 |
bool multifunction,
|
| 1767 |
const char *name) |
| 1768 |
{
|
| 1769 |
PCIDevice *dev = pci_create_multifunction(bus, devfn, multifunction, name); |
| 1770 |
qdev_init_nofail(&dev->qdev); |
| 1771 |
return dev;
|
| 1772 |
} |
| 1773 |
|
| 1774 |
PCIDevice *pci_create(PCIBus *bus, int devfn, const char *name) |
| 1775 |
{
|
| 1776 |
return pci_create_multifunction(bus, devfn, false, name); |
| 1777 |
} |
| 1778 |
|
| 1779 |
PCIDevice *pci_create_simple(PCIBus *bus, int devfn, const char *name) |
| 1780 |
{
|
| 1781 |
return pci_create_simple_multifunction(bus, devfn, false, name); |
| 1782 |
} |
| 1783 |
|
| 1784 |
static uint8_t pci_find_space(PCIDevice *pdev, uint8_t size)
|
| 1785 |
{
|
| 1786 |
int offset = PCI_CONFIG_HEADER_SIZE;
|
| 1787 |
int i;
|
| 1788 |
for (i = PCI_CONFIG_HEADER_SIZE; i < PCI_CONFIG_SPACE_SIZE; ++i) {
|
| 1789 |
if (pdev->used[i])
|
| 1790 |
offset = i + 1;
|
| 1791 |
else if (i - offset + 1 == size) |
| 1792 |
return offset;
|
| 1793 |
} |
| 1794 |
return 0; |
| 1795 |
} |
| 1796 |
|
| 1797 |
static uint8_t pci_find_capability_list(PCIDevice *pdev, uint8_t cap_id,
|
| 1798 |
uint8_t *prev_p) |
| 1799 |
{
|
| 1800 |
uint8_t next, prev; |
| 1801 |
|
| 1802 |
if (!(pdev->config[PCI_STATUS] & PCI_STATUS_CAP_LIST))
|
| 1803 |
return 0; |
| 1804 |
|
| 1805 |
for (prev = PCI_CAPABILITY_LIST; (next = pdev->config[prev]);
|
| 1806 |
prev = next + PCI_CAP_LIST_NEXT) |
| 1807 |
if (pdev->config[next + PCI_CAP_LIST_ID] == cap_id)
|
| 1808 |
break;
|
| 1809 |
|
| 1810 |
if (prev_p)
|
| 1811 |
*prev_p = prev; |
| 1812 |
return next;
|
| 1813 |
} |
| 1814 |
|
| 1815 |
static uint8_t pci_find_capability_at_offset(PCIDevice *pdev, uint8_t offset)
|
| 1816 |
{
|
| 1817 |
uint8_t next, prev, found = 0;
|
| 1818 |
|
| 1819 |
if (!(pdev->used[offset])) {
|
| 1820 |
return 0; |
| 1821 |
} |
| 1822 |
|
| 1823 |
assert(pdev->config[PCI_STATUS] & PCI_STATUS_CAP_LIST); |
| 1824 |
|
| 1825 |
for (prev = PCI_CAPABILITY_LIST; (next = pdev->config[prev]);
|
| 1826 |
prev = next + PCI_CAP_LIST_NEXT) {
|
| 1827 |
if (next <= offset && next > found) {
|
| 1828 |
found = next; |
| 1829 |
} |
| 1830 |
} |
| 1831 |
return found;
|
| 1832 |
} |
| 1833 |
|
| 1834 |
/* Patch the PCI vendor and device ids in a PCI rom image if necessary.
|
| 1835 |
This is needed for an option rom which is used for more than one device. */
|
| 1836 |
static void pci_patch_ids(PCIDevice *pdev, uint8_t *ptr, int size) |
| 1837 |
{
|
| 1838 |
uint16_t vendor_id; |
| 1839 |
uint16_t device_id; |
| 1840 |
uint16_t rom_vendor_id; |
| 1841 |
uint16_t rom_device_id; |
| 1842 |
uint16_t rom_magic; |
| 1843 |
uint16_t pcir_offset; |
| 1844 |
uint8_t checksum; |
| 1845 |
|
| 1846 |
/* Words in rom data are little endian (like in PCI configuration),
|
| 1847 |
so they can be read / written with pci_get_word / pci_set_word. */
|
| 1848 |
|
| 1849 |
/* Only a valid rom will be patched. */
|
| 1850 |
rom_magic = pci_get_word(ptr); |
| 1851 |
if (rom_magic != 0xaa55) { |
| 1852 |
PCI_DPRINTF("Bad ROM magic %04x\n", rom_magic);
|
| 1853 |
return;
|
| 1854 |
} |
| 1855 |
pcir_offset = pci_get_word(ptr + 0x18);
|
| 1856 |
if (pcir_offset + 8 >= size || memcmp(ptr + pcir_offset, "PCIR", 4)) { |
| 1857 |
PCI_DPRINTF("Bad PCIR offset 0x%x or signature\n", pcir_offset);
|
| 1858 |
return;
|
| 1859 |
} |
| 1860 |
|
| 1861 |
vendor_id = pci_get_word(pdev->config + PCI_VENDOR_ID); |
| 1862 |
device_id = pci_get_word(pdev->config + PCI_DEVICE_ID); |
| 1863 |
rom_vendor_id = pci_get_word(ptr + pcir_offset + 4);
|
| 1864 |
rom_device_id = pci_get_word(ptr + pcir_offset + 6);
|
| 1865 |
|
| 1866 |
PCI_DPRINTF("%s: ROM id %04x%04x / PCI id %04x%04x\n", pdev->romfile,
|
| 1867 |
vendor_id, device_id, rom_vendor_id, rom_device_id); |
| 1868 |
|
| 1869 |
checksum = ptr[6];
|
| 1870 |
|
| 1871 |
if (vendor_id != rom_vendor_id) {
|
| 1872 |
/* Patch vendor id and checksum (at offset 6 for etherboot roms). */
|
| 1873 |
checksum += (uint8_t)rom_vendor_id + (uint8_t)(rom_vendor_id >> 8);
|
| 1874 |
checksum -= (uint8_t)vendor_id + (uint8_t)(vendor_id >> 8);
|
| 1875 |
PCI_DPRINTF("ROM checksum %02x / %02x\n", ptr[6], checksum); |
| 1876 |
ptr[6] = checksum;
|
| 1877 |
pci_set_word(ptr + pcir_offset + 4, vendor_id);
|
| 1878 |
} |
| 1879 |
|
| 1880 |
if (device_id != rom_device_id) {
|
| 1881 |
/* Patch device id and checksum (at offset 6 for etherboot roms). */
|
| 1882 |
checksum += (uint8_t)rom_device_id + (uint8_t)(rom_device_id >> 8);
|
| 1883 |
checksum -= (uint8_t)device_id + (uint8_t)(device_id >> 8);
|
| 1884 |
PCI_DPRINTF("ROM checksum %02x / %02x\n", ptr[6], checksum); |
| 1885 |
ptr[6] = checksum;
|
| 1886 |
pci_set_word(ptr + pcir_offset + 6, device_id);
|
| 1887 |
} |
| 1888 |
} |
| 1889 |
|
| 1890 |
/* Add an option rom for the device */
|
| 1891 |
static int pci_add_option_rom(PCIDevice *pdev, bool is_default_rom) |
| 1892 |
{
|
| 1893 |
int size;
|
| 1894 |
char *path;
|
| 1895 |
void *ptr;
|
| 1896 |
char name[32]; |
| 1897 |
const VMStateDescription *vmsd;
|
| 1898 |
|
| 1899 |
if (!pdev->romfile)
|
| 1900 |
return 0; |
| 1901 |
if (strlen(pdev->romfile) == 0) |
| 1902 |
return 0; |
| 1903 |
|
| 1904 |
if (!pdev->rom_bar) {
|
| 1905 |
/*
|
| 1906 |
* Load rom via fw_cfg instead of creating a rom bar,
|
| 1907 |
* for 0.11 compatibility.
|
| 1908 |
*/
|
| 1909 |
int class = pci_get_word(pdev->config + PCI_CLASS_DEVICE);
|
| 1910 |
if (class == 0x0300) { |
| 1911 |
rom_add_vga(pdev->romfile); |
| 1912 |
} else {
|
| 1913 |
rom_add_option(pdev->romfile, -1);
|
| 1914 |
} |
| 1915 |
return 0; |
| 1916 |
} |
| 1917 |
|
| 1918 |
path = qemu_find_file(QEMU_FILE_TYPE_BIOS, pdev->romfile); |
| 1919 |
if (path == NULL) { |
| 1920 |
path = g_strdup(pdev->romfile); |
| 1921 |
} |
| 1922 |
|
| 1923 |
size = get_image_size(path); |
| 1924 |
if (size < 0) { |
| 1925 |
error_report("%s: failed to find romfile \"%s\"",
|
| 1926 |
__func__, pdev->romfile); |
| 1927 |
g_free(path); |
| 1928 |
return -1; |
| 1929 |
} else if (size == 0) { |
| 1930 |
error_report("%s: ignoring empty romfile \"%s\"",
|
| 1931 |
__func__, pdev->romfile); |
| 1932 |
g_free(path); |
| 1933 |
return -1; |
| 1934 |
} |
| 1935 |
if (size & (size - 1)) { |
| 1936 |
size = 1 << qemu_fls(size);
|
| 1937 |
} |
| 1938 |
|
| 1939 |
vmsd = qdev_get_vmsd(DEVICE(pdev)); |
| 1940 |
|
| 1941 |
if (vmsd) {
|
| 1942 |
snprintf(name, sizeof(name), "%s.rom", vmsd->name); |
| 1943 |
} else {
|
| 1944 |
snprintf(name, sizeof(name), "%s.rom", object_get_typename(OBJECT(pdev))); |
| 1945 |
} |
| 1946 |
pdev->has_rom = true;
|
| 1947 |
memory_region_init_ram(&pdev->rom, name, size); |
| 1948 |
vmstate_register_ram(&pdev->rom, &pdev->qdev); |
| 1949 |
ptr = memory_region_get_ram_ptr(&pdev->rom); |
| 1950 |
load_image(path, ptr); |
| 1951 |
g_free(path); |
| 1952 |
|
| 1953 |
if (is_default_rom) {
|
| 1954 |
/* Only the default rom images will be patched (if needed). */
|
| 1955 |
pci_patch_ids(pdev, ptr, size); |
| 1956 |
} |
| 1957 |
|
| 1958 |
pci_register_bar(pdev, PCI_ROM_SLOT, 0, &pdev->rom);
|
| 1959 |
|
| 1960 |
return 0; |
| 1961 |
} |
| 1962 |
|
| 1963 |
static void pci_del_option_rom(PCIDevice *pdev) |
| 1964 |
{
|
| 1965 |
if (!pdev->has_rom)
|
| 1966 |
return;
|
| 1967 |
|
| 1968 |
vmstate_unregister_ram(&pdev->rom, &pdev->qdev); |
| 1969 |
memory_region_destroy(&pdev->rom); |
| 1970 |
pdev->has_rom = false;
|
| 1971 |
} |
| 1972 |
|
| 1973 |
/*
|
| 1974 |
* if !offset
|
| 1975 |
* Reserve space and add capability to the linked list in pci config space
|
| 1976 |
*
|
| 1977 |
* if offset = 0,
|
| 1978 |
* Find and reserve space and add capability to the linked list
|
| 1979 |
* in pci config space */
|
| 1980 |
int pci_add_capability(PCIDevice *pdev, uint8_t cap_id,
|
| 1981 |
uint8_t offset, uint8_t size) |
| 1982 |
{
|
| 1983 |
uint8_t *config; |
| 1984 |
int i, overlapping_cap;
|
| 1985 |
|
| 1986 |
if (!offset) {
|
| 1987 |
offset = pci_find_space(pdev, size); |
| 1988 |
if (!offset) {
|
| 1989 |
return -ENOSPC;
|
| 1990 |
} |
| 1991 |
} else {
|
| 1992 |
/* Verify that capabilities don't overlap. Note: device assignment
|
| 1993 |
* depends on this check to verify that the device is not broken.
|
| 1994 |
* Should never trigger for emulated devices, but it's helpful
|
| 1995 |
* for debugging these. */
|
| 1996 |
for (i = offset; i < offset + size; i++) {
|
| 1997 |
overlapping_cap = pci_find_capability_at_offset(pdev, i); |
| 1998 |
if (overlapping_cap) {
|
| 1999 |
fprintf(stderr, "ERROR: %04x:%02x:%02x.%x "
|
| 2000 |
"Attempt to add PCI capability %x at offset "
|
| 2001 |
"%x overlaps existing capability %x at offset %x\n",
|
| 2002 |
pci_find_domain(pdev->bus), pci_bus_num(pdev->bus), |
| 2003 |
PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn), |
| 2004 |
cap_id, offset, overlapping_cap, i); |
| 2005 |
return -EINVAL;
|
| 2006 |
} |
| 2007 |
} |
| 2008 |
} |
| 2009 |
|
| 2010 |
config = pdev->config + offset; |
| 2011 |
config[PCI_CAP_LIST_ID] = cap_id; |
| 2012 |
config[PCI_CAP_LIST_NEXT] = pdev->config[PCI_CAPABILITY_LIST]; |
| 2013 |
pdev->config[PCI_CAPABILITY_LIST] = offset; |
| 2014 |
pdev->config[PCI_STATUS] |= PCI_STATUS_CAP_LIST; |
| 2015 |
memset(pdev->used + offset, 0xFF, QEMU_ALIGN_UP(size, 4)); |
| 2016 |
/* Make capability read-only by default */
|
| 2017 |
memset(pdev->wmask + offset, 0, size);
|
| 2018 |
/* Check capability by default */
|
| 2019 |
memset(pdev->cmask + offset, 0xFF, size);
|
| 2020 |
return offset;
|
| 2021 |
} |
| 2022 |
|
| 2023 |
/* Unlink capability from the pci config space. */
|
| 2024 |
void pci_del_capability(PCIDevice *pdev, uint8_t cap_id, uint8_t size)
|
| 2025 |
{
|
| 2026 |
uint8_t prev, offset = pci_find_capability_list(pdev, cap_id, &prev); |
| 2027 |
if (!offset)
|
| 2028 |
return;
|
| 2029 |
pdev->config[prev] = pdev->config[offset + PCI_CAP_LIST_NEXT]; |
| 2030 |
/* Make capability writable again */
|
| 2031 |
memset(pdev->wmask + offset, 0xff, size);
|
| 2032 |
memset(pdev->w1cmask + offset, 0, size);
|
| 2033 |
/* Clear cmask as device-specific registers can't be checked */
|
| 2034 |
memset(pdev->cmask + offset, 0, size);
|
| 2035 |
memset(pdev->used + offset, 0, QEMU_ALIGN_UP(size, 4)); |
| 2036 |
|
| 2037 |
if (!pdev->config[PCI_CAPABILITY_LIST])
|
| 2038 |
pdev->config[PCI_STATUS] &= ~PCI_STATUS_CAP_LIST; |
| 2039 |
} |
| 2040 |
|
| 2041 |
uint8_t pci_find_capability(PCIDevice *pdev, uint8_t cap_id) |
| 2042 |
{
|
| 2043 |
return pci_find_capability_list(pdev, cap_id, NULL); |
| 2044 |
} |
| 2045 |
|
| 2046 |
static void pcibus_dev_print(Monitor *mon, DeviceState *dev, int indent) |
| 2047 |
{
|
| 2048 |
PCIDevice *d = (PCIDevice *)dev; |
| 2049 |
const pci_class_desc *desc;
|
| 2050 |
char ctxt[64]; |
| 2051 |
PCIIORegion *r; |
| 2052 |
int i, class;
|
| 2053 |
|
| 2054 |
class = pci_get_word(d->config + PCI_CLASS_DEVICE); |
| 2055 |
desc = pci_class_descriptions; |
| 2056 |
while (desc->desc && class != desc->class)
|
| 2057 |
desc++; |
| 2058 |
if (desc->desc) {
|
| 2059 |
snprintf(ctxt, sizeof(ctxt), "%s", desc->desc); |
| 2060 |
} else {
|
| 2061 |
snprintf(ctxt, sizeof(ctxt), "Class %04x", class); |
| 2062 |
} |
| 2063 |
|
| 2064 |
monitor_printf(mon, "%*sclass %s, addr %02x:%02x.%x, "
|
| 2065 |
"pci id %04x:%04x (sub %04x:%04x)\n",
|
| 2066 |
indent, "", ctxt, pci_bus_num(d->bus),
|
| 2067 |
PCI_SLOT(d->devfn), PCI_FUNC(d->devfn), |
| 2068 |
pci_get_word(d->config + PCI_VENDOR_ID), |
| 2069 |
pci_get_word(d->config + PCI_DEVICE_ID), |
| 2070 |
pci_get_word(d->config + PCI_SUBSYSTEM_VENDOR_ID), |
| 2071 |
pci_get_word(d->config + PCI_SUBSYSTEM_ID)); |
| 2072 |
for (i = 0; i < PCI_NUM_REGIONS; i++) { |
| 2073 |
r = &d->io_regions[i]; |
| 2074 |
if (!r->size)
|
| 2075 |
continue;
|
| 2076 |
monitor_printf(mon, "%*sbar %d: %s at 0x%"FMT_PCIBUS
|
| 2077 |
" [0x%"FMT_PCIBUS"]\n", |
| 2078 |
indent, "",
|
| 2079 |
i, r->type & PCI_BASE_ADDRESS_SPACE_IO ? "i/o" : "mem", |
| 2080 |
r->addr, r->addr + r->size - 1);
|
| 2081 |
} |
| 2082 |
} |
| 2083 |
|
| 2084 |
static char *pci_dev_fw_name(DeviceState *dev, char *buf, int len) |
| 2085 |
{
|
| 2086 |
PCIDevice *d = (PCIDevice *)dev; |
| 2087 |
const char *name = NULL; |
| 2088 |
const pci_class_desc *desc = pci_class_descriptions;
|
| 2089 |
int class = pci_get_word(d->config + PCI_CLASS_DEVICE);
|
| 2090 |
|
| 2091 |
while (desc->desc &&
|
| 2092 |
(class & ~desc->fw_ign_bits) != |
| 2093 |
(desc->class & ~desc->fw_ign_bits)) {
|
| 2094 |
desc++; |
| 2095 |
} |
| 2096 |
|
| 2097 |
if (desc->desc) {
|
| 2098 |
name = desc->fw_name; |
| 2099 |
} |
| 2100 |
|
| 2101 |
if (name) {
|
| 2102 |
pstrcpy(buf, len, name); |
| 2103 |
} else {
|
| 2104 |
snprintf(buf, len, "pci%04x,%04x",
|
| 2105 |
pci_get_word(d->config + PCI_VENDOR_ID), |
| 2106 |
pci_get_word(d->config + PCI_DEVICE_ID)); |
| 2107 |
} |
| 2108 |
|
| 2109 |
return buf;
|
| 2110 |
} |
| 2111 |
|
| 2112 |
static char *pcibus_get_fw_dev_path(DeviceState *dev) |
| 2113 |
{
|
| 2114 |
PCIDevice *d = (PCIDevice *)dev; |
| 2115 |
char path[50], name[33]; |
| 2116 |
int off;
|
| 2117 |
|
| 2118 |
off = snprintf(path, sizeof(path), "%s@%x", |
| 2119 |
pci_dev_fw_name(dev, name, sizeof name),
|
| 2120 |
PCI_SLOT(d->devfn)); |
| 2121 |
if (PCI_FUNC(d->devfn))
|
| 2122 |
snprintf(path + off, sizeof(path) + off, ",%x", PCI_FUNC(d->devfn)); |
| 2123 |
return g_strdup(path);
|
| 2124 |
} |
| 2125 |
|
| 2126 |
static char *pcibus_get_dev_path(DeviceState *dev) |
| 2127 |
{
|
| 2128 |
PCIDevice *d = container_of(dev, PCIDevice, qdev); |
| 2129 |
PCIDevice *t; |
| 2130 |
int slot_depth;
|
| 2131 |
/* Path format: Domain:00:Slot.Function:Slot.Function....:Slot.Function.
|
| 2132 |
* 00 is added here to make this format compatible with
|
| 2133 |
* domain:Bus:Slot.Func for systems without nested PCI bridges.
|
| 2134 |
* Slot.Function list specifies the slot and function numbers for all
|
| 2135 |
* devices on the path from root to the specific device. */
|
| 2136 |
char domain[] = "DDDD:00"; |
| 2137 |
char slot[] = ":SS.F"; |
| 2138 |
int domain_len = sizeof domain - 1 /* For '\0' */; |
| 2139 |
int slot_len = sizeof slot - 1 /* For '\0' */; |
| 2140 |
int path_len;
|
| 2141 |
char *path, *p;
|
| 2142 |
int s;
|
| 2143 |
|
| 2144 |
/* Calculate # of slots on path between device and root. */;
|
| 2145 |
slot_depth = 0;
|
| 2146 |
for (t = d; t; t = t->bus->parent_dev) {
|
| 2147 |
++slot_depth; |
| 2148 |
} |
| 2149 |
|
| 2150 |
path_len = domain_len + slot_len * slot_depth; |
| 2151 |
|
| 2152 |
/* Allocate memory, fill in the terminating null byte. */
|
| 2153 |
path = g_malloc(path_len + 1 /* For '\0' */); |
| 2154 |
path[path_len] = '\0';
|
| 2155 |
|
| 2156 |
/* First field is the domain. */
|
| 2157 |
s = snprintf(domain, sizeof domain, "%04x:00", pci_find_domain(d->bus)); |
| 2158 |
assert(s == domain_len); |
| 2159 |
memcpy(path, domain, domain_len); |
| 2160 |
|
| 2161 |
/* Fill in slot numbers. We walk up from device to root, so need to print
|
| 2162 |
* them in the reverse order, last to first. */
|
| 2163 |
p = path + path_len; |
| 2164 |
for (t = d; t; t = t->bus->parent_dev) {
|
| 2165 |
p -= slot_len; |
| 2166 |
s = snprintf(slot, sizeof slot, ":%02x.%x", |
| 2167 |
PCI_SLOT(t->devfn), PCI_FUNC(t->devfn)); |
| 2168 |
assert(s == slot_len); |
| 2169 |
memcpy(p, slot, slot_len); |
| 2170 |
} |
| 2171 |
|
| 2172 |
return path;
|
| 2173 |
} |
| 2174 |
|
| 2175 |
static int pci_qdev_find_recursive(PCIBus *bus, |
| 2176 |
const char *id, PCIDevice **pdev) |
| 2177 |
{
|
| 2178 |
DeviceState *qdev = qdev_find_recursive(&bus->qbus, id); |
| 2179 |
if (!qdev) {
|
| 2180 |
return -ENODEV;
|
| 2181 |
} |
| 2182 |
|
| 2183 |
/* roughly check if given qdev is pci device */
|
| 2184 |
if (object_dynamic_cast(OBJECT(qdev), TYPE_PCI_DEVICE)) {
|
| 2185 |
*pdev = PCI_DEVICE(qdev); |
| 2186 |
return 0; |
| 2187 |
} |
| 2188 |
return -EINVAL;
|
| 2189 |
} |
| 2190 |
|
| 2191 |
int pci_qdev_find_device(const char *id, PCIDevice **pdev) |
| 2192 |
{
|
| 2193 |
struct PCIHostBus *host;
|
| 2194 |
int rc = -ENODEV;
|
| 2195 |
|
| 2196 |
QLIST_FOREACH(host, &host_buses, next) {
|
| 2197 |
int tmp = pci_qdev_find_recursive(host->bus, id, pdev);
|
| 2198 |
if (!tmp) {
|
| 2199 |
rc = 0;
|
| 2200 |
break;
|
| 2201 |
} |
| 2202 |
if (tmp != -ENODEV) {
|
| 2203 |
rc = tmp; |
| 2204 |
} |
| 2205 |
} |
| 2206 |
|
| 2207 |
return rc;
|
| 2208 |
} |
| 2209 |
|
| 2210 |
MemoryRegion *pci_address_space(PCIDevice *dev) |
| 2211 |
{
|
| 2212 |
return dev->bus->address_space_mem;
|
| 2213 |
} |
| 2214 |
|
| 2215 |
MemoryRegion *pci_address_space_io(PCIDevice *dev) |
| 2216 |
{
|
| 2217 |
return dev->bus->address_space_io;
|
| 2218 |
} |
| 2219 |
|
| 2220 |
static void pci_device_class_init(ObjectClass *klass, void *data) |
| 2221 |
{
|
| 2222 |
DeviceClass *k = DEVICE_CLASS(klass); |
| 2223 |
k->init = pci_qdev_init; |
| 2224 |
k->unplug = pci_unplug_device; |
| 2225 |
k->exit = pci_unregister_device; |
| 2226 |
k->bus_type = TYPE_PCI_BUS; |
| 2227 |
k->props = pci_props; |
| 2228 |
} |
| 2229 |
|
| 2230 |
void pci_setup_iommu(PCIBus *bus, PCIIOMMUFunc fn, void *opaque) |
| 2231 |
{
|
| 2232 |
bus->iommu_fn = fn; |
| 2233 |
bus->iommu_opaque = opaque; |
| 2234 |
} |
| 2235 |
|
| 2236 |
static const TypeInfo pci_device_type_info = { |
| 2237 |
.name = TYPE_PCI_DEVICE, |
| 2238 |
.parent = TYPE_DEVICE, |
| 2239 |
.instance_size = sizeof(PCIDevice),
|
| 2240 |
.abstract = true,
|
| 2241 |
.class_size = sizeof(PCIDeviceClass),
|
| 2242 |
.class_init = pci_device_class_init, |
| 2243 |
}; |
| 2244 |
|
| 2245 |
static void pci_register_types(void) |
| 2246 |
{
|
| 2247 |
type_register_static(&pci_bus_info); |
| 2248 |
type_register_static(&pcie_bus_info); |
| 2249 |
type_register_static(&pci_device_type_info); |
| 2250 |
} |
| 2251 |
|
| 2252 |
type_init(pci_register_types) |