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/*
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* QEMU PCI bus manager
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*
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* Copyright (c) 2004 Fabrice Bellard
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "hw.h" |
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#include "pci.h" |
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#include "pci_bridge.h" |
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#include "pci_internals.h" |
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#include "monitor.h" |
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#include "net.h" |
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#include "sysemu.h" |
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#include "loader.h" |
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#include "qemu-objects.h" |
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#include "range.h" |
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//#define DEBUG_PCI
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#ifdef DEBUG_PCI
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# define PCI_DPRINTF(format, ...) printf(format, ## __VA_ARGS__) |
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#else
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# define PCI_DPRINTF(format, ...) do { } while (0) |
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#endif
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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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struct BusInfo pci_bus_info = {
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.name = "PCI",
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.size = sizeof(PCIBus),
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.print_dev = pcibus_dev_print, |
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.get_dev_path = pcibus_get_dev_path, |
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.get_fw_dev_path = pcibus_get_fw_dev_path, |
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.reset = pcibus_reset, |
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.props = (Property[]) { |
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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_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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static uint16_t pci_default_sub_vendor_id = PCI_SUBVENDOR_ID_REDHAT_QUMRANET;
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static uint16_t pci_default_sub_device_id = PCI_SUBDEVICE_ID_QEMU;
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struct PCIHostBus {
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int domain;
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struct PCIBus *bus;
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QLIST_ENTRY(PCIHostBus) next; |
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}; |
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static QLIST_HEAD(, PCIHostBus) host_buses;
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static const VMStateDescription vmstate_pcibus = { |
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.name = "PCIBUS",
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.version_id = 1,
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.minimum_version_id = 1,
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.minimum_version_id_old = 1,
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.fields = (VMStateField []) { |
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VMSTATE_INT32_EQUAL(nirq, PCIBus), |
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VMSTATE_VARRAY_INT32(irq_count, PCIBus, nirq, 0, vmstate_info_int32, int32_t),
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VMSTATE_END_OF_LIST() |
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} |
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}; |
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static int pci_bar(PCIDevice *d, int reg) |
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{ |
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uint8_t type; |
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if (reg != PCI_ROM_SLOT)
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return PCI_BASE_ADDRESS_0 + reg * 4; |
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type = d->config[PCI_HEADER_TYPE] & ~PCI_HEADER_TYPE_MULTI_FUNCTION; |
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return type == PCI_HEADER_TYPE_BRIDGE ? PCI_ROM_ADDRESS1 : PCI_ROM_ADDRESS;
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} |
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static 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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/* 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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* 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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/* TODO: call the below unconditionally once all pci devices
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* are qdevified */
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if (dev->qdev.info) {
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qdev_reset_all(&dev->qdev); |
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} |
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dev->irq_state = 0;
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pci_update_irq_status(dev); |
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/* Clear all writeable 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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} |
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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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for (i = 0; i < bus->nirq; i++) { |
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bus->irq_count[i] = 0;
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} |
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for (i = 0; i < ARRAY_SIZE(bus->devices); ++i) { |
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if (bus->devices[i]) {
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pci_device_reset(bus->devices[i]); |
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} |
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} |
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} |
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static 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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/* 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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static void pci_host_bus_register(int domain, PCIBus *bus) |
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{ |
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struct PCIHostBus *host;
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host = qemu_mallocz(sizeof(*host));
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host->domain = domain; |
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host->bus = bus; |
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QLIST_INSERT_HEAD(&host_buses, host, next); |
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} |
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PCIBus *pci_find_root_bus(int domain)
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{ |
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struct PCIHostBus *host;
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QLIST_FOREACH(host, &host_buses, next) { |
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if (host->domain == domain) {
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return host->bus;
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} |
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} |
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return NULL; |
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} |
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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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/* 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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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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abort(); /* should not be reached */
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return -1; |
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} |
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void pci_bus_new_inplace(PCIBus *bus, DeviceState *parent,
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const char *name, int devfn_min) |
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{ |
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qbus_create_inplace(&bus->qbus, &pci_bus_info, parent, name); |
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assert(PCI_FUNC(devfn_min) == 0);
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bus->devfn_min = devfn_min; |
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/* host bridge */
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QLIST_INIT(&bus->child); |
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pci_host_bus_register(0, bus); /* for now only pci domain 0 is supported */ |
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vmstate_register(NULL, -1, &vmstate_pcibus, bus); |
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} |
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PCIBus *pci_bus_new(DeviceState *parent, const char *name, int devfn_min) |
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{ |
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PCIBus *bus; |
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bus = qemu_mallocz(sizeof(*bus));
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bus->qbus.qdev_allocated = 1;
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pci_bus_new_inplace(bus, parent, name, devfn_min); |
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return bus;
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} |
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void pci_bus_irqs(PCIBus *bus, pci_set_irq_fn set_irq, pci_map_irq_fn map_irq,
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void *irq_opaque, int nirq) |
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{ |
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bus->set_irq = set_irq; |
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bus->map_irq = map_irq; |
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bus->irq_opaque = irq_opaque; |
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bus->nirq = nirq; |
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bus->irq_count = qemu_mallocz(nirq * sizeof(bus->irq_count[0])); |
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} |
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void pci_bus_hotplug(PCIBus *bus, pci_hotplug_fn hotplug, 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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} |
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void pci_bus_set_mem_base(PCIBus *bus, target_phys_addr_t base)
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{ |
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bus->mem_base = base; |
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} |
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PCIBus *pci_register_bus(DeviceState *parent, const char *name, |
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pci_set_irq_fn set_irq, pci_map_irq_fn map_irq, |
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void *irq_opaque, int devfn_min, int nirq) |
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{ |
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PCIBus *bus; |
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bus = pci_bus_new(parent, name, devfn_min); |
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pci_bus_irqs(bus, set_irq, map_irq, irq_opaque, nirq); |
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return bus;
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} |
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int pci_bus_num(PCIBus *s)
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{ |
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if (!s->parent_dev)
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return 0; /* pci host bridge */ |
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return s->parent_dev->config[PCI_SECONDARY_BUS];
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} |
312 |
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static int get_pci_config_device(QEMUFile *f, void *pv, size_t size) |
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{ |
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PCIDevice *s = container_of(pv, PCIDevice, config); |
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uint8_t *config; |
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int i;
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assert(size == pci_config_size(s)); |
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config = qemu_malloc(size); |
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qemu_get_buffer(f, config, size); |
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for (i = 0; i < size; ++i) { |
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if ((config[i] ^ s->config[i]) &
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s->cmask[i] & ~s->wmask[i] & ~s->w1cmask[i]) { |
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qemu_free(config); |
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return -EINVAL;
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} |
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} |
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memcpy(s->config, config, size); |
331 |
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pci_update_mappings(s); |
333 |
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qemu_free(config); |
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return 0; |
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} |
337 |
|
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/* just put buffer */
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static void put_pci_config_device(QEMUFile *f, void *pv, size_t size) |
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{ |
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const uint8_t **v = pv;
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assert(size == pci_config_size(container_of(pv, PCIDevice, config))); |
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qemu_put_buffer(f, *v, size); |
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} |
345 |
|
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static VMStateInfo vmstate_info_pci_config = {
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.name = "pci config",
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.get = get_pci_config_device, |
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.put = put_pci_config_device, |
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}; |
351 |
|
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static int get_pci_irq_state(QEMUFile *f, void *pv, size_t size) |
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{ |
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PCIDevice *s = container_of(pv, PCIDevice, irq_state); |
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uint32_t irq_state[PCI_NUM_PINS]; |
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int i;
|
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for (i = 0; i < PCI_NUM_PINS; ++i) { |
358 |
irq_state[i] = qemu_get_be32(f); |
359 |
if (irq_state[i] != 0x1 && irq_state[i] != 0) { |
360 |
fprintf(stderr, "irq state %d: must be 0 or 1.\n",
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irq_state[i]); |
362 |
return -EINVAL;
|
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} |
364 |
} |
365 |
|
366 |
for (i = 0; i < PCI_NUM_PINS; ++i) { |
367 |
pci_set_irq_state(s, i, irq_state[i]); |
368 |
} |
369 |
|
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return 0; |
371 |
} |
372 |
|
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static void put_pci_irq_state(QEMUFile *f, void *pv, size_t size) |
374 |
{ |
375 |
int i;
|
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PCIDevice *s = container_of(pv, PCIDevice, irq_state); |
377 |
|
378 |
for (i = 0; i < PCI_NUM_PINS; ++i) { |
379 |
qemu_put_be32(f, pci_irq_state(s, i)); |
380 |
} |
381 |
} |
382 |
|
383 |
static VMStateInfo vmstate_info_pci_irq_state = {
|
384 |
.name = "pci irq state",
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.get = get_pci_irq_state, |
386 |
.put = put_pci_irq_state, |
387 |
}; |
388 |
|
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const VMStateDescription vmstate_pci_device = {
|
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.name = "PCIDevice",
|
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.version_id = 2,
|
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.minimum_version_id = 1,
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.minimum_version_id_old = 1,
|
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.fields = (VMStateField []) { |
395 |
VMSTATE_INT32_LE(version_id, PCIDevice), |
396 |
VMSTATE_BUFFER_UNSAFE_INFO(config, PCIDevice, 0,
|
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vmstate_info_pci_config, |
398 |
PCI_CONFIG_SPACE_SIZE), |
399 |
VMSTATE_BUFFER_UNSAFE_INFO(irq_state, PCIDevice, 2,
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vmstate_info_pci_irq_state, |
401 |
PCI_NUM_PINS * sizeof(int32_t)),
|
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VMSTATE_END_OF_LIST() |
403 |
} |
404 |
}; |
405 |
|
406 |
const VMStateDescription vmstate_pcie_device = {
|
407 |
.name = "PCIDevice",
|
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.version_id = 2,
|
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.minimum_version_id = 1,
|
410 |
.minimum_version_id_old = 1,
|
411 |
.fields = (VMStateField []) { |
412 |
VMSTATE_INT32_LE(version_id, PCIDevice), |
413 |
VMSTATE_BUFFER_UNSAFE_INFO(config, PCIDevice, 0,
|
414 |
vmstate_info_pci_config, |
415 |
PCIE_CONFIG_SPACE_SIZE), |
416 |
VMSTATE_BUFFER_UNSAFE_INFO(irq_state, PCIDevice, 2,
|
417 |
vmstate_info_pci_irq_state, |
418 |
PCI_NUM_PINS * sizeof(int32_t)),
|
419 |
VMSTATE_END_OF_LIST() |
420 |
} |
421 |
}; |
422 |
|
423 |
static inline const VMStateDescription *pci_get_vmstate(PCIDevice *s) |
424 |
{ |
425 |
return pci_is_express(s) ? &vmstate_pcie_device : &vmstate_pci_device;
|
426 |
} |
427 |
|
428 |
void pci_device_save(PCIDevice *s, QEMUFile *f)
|
429 |
{ |
430 |
/* Clear interrupt status bit: it is implicit
|
431 |
* in irq_state which we are saving.
|
432 |
* This makes us compatible with old devices
|
433 |
* which never set or clear this bit. */
|
434 |
s->config[PCI_STATUS] &= ~PCI_STATUS_INTERRUPT; |
435 |
vmstate_save_state(f, pci_get_vmstate(s), s); |
436 |
/* Restore the interrupt status bit. */
|
437 |
pci_update_irq_status(s); |
438 |
} |
439 |
|
440 |
int pci_device_load(PCIDevice *s, QEMUFile *f)
|
441 |
{ |
442 |
int ret;
|
443 |
ret = vmstate_load_state(f, pci_get_vmstate(s), s, s->version_id); |
444 |
/* Restore the interrupt status bit. */
|
445 |
pci_update_irq_status(s); |
446 |
return ret;
|
447 |
} |
448 |
|
449 |
static void pci_set_default_subsystem_id(PCIDevice *pci_dev) |
450 |
{ |
451 |
pci_set_word(pci_dev->config + PCI_SUBSYSTEM_VENDOR_ID, |
452 |
pci_default_sub_vendor_id); |
453 |
pci_set_word(pci_dev->config + PCI_SUBSYSTEM_ID, |
454 |
pci_default_sub_device_id); |
455 |
} |
456 |
|
457 |
/*
|
458 |
* Parse [[<domain>:]<bus>:]<slot>, return -1 on error if funcp == NULL
|
459 |
* [[<domain>:]<bus>:]<slot>.<func>, return -1 on error
|
460 |
*/
|
461 |
int pci_parse_devaddr(const char *addr, int *domp, int *busp, |
462 |
unsigned int *slotp, unsigned int *funcp) |
463 |
{ |
464 |
const char *p; |
465 |
char *e;
|
466 |
unsigned long val; |
467 |
unsigned long dom = 0, bus = 0; |
468 |
unsigned int slot = 0; |
469 |
unsigned int func = 0; |
470 |
|
471 |
p = addr; |
472 |
val = strtoul(p, &e, 16);
|
473 |
if (e == p)
|
474 |
return -1; |
475 |
if (*e == ':') { |
476 |
bus = val; |
477 |
p = e + 1;
|
478 |
val = strtoul(p, &e, 16);
|
479 |
if (e == p)
|
480 |
return -1; |
481 |
if (*e == ':') { |
482 |
dom = bus; |
483 |
bus = val; |
484 |
p = e + 1;
|
485 |
val = strtoul(p, &e, 16);
|
486 |
if (e == p)
|
487 |
return -1; |
488 |
} |
489 |
} |
490 |
|
491 |
slot = val; |
492 |
|
493 |
if (funcp != NULL) { |
494 |
if (*e != '.') |
495 |
return -1; |
496 |
|
497 |
p = e + 1;
|
498 |
val = strtoul(p, &e, 16);
|
499 |
if (e == p)
|
500 |
return -1; |
501 |
|
502 |
func = val; |
503 |
} |
504 |
|
505 |
/* if funcp == NULL func is 0 */
|
506 |
if (dom > 0xffff || bus > 0xff || slot > 0x1f || func > 7) |
507 |
return -1; |
508 |
|
509 |
if (*e)
|
510 |
return -1; |
511 |
|
512 |
/* Note: QEMU doesn't implement domains other than 0 */
|
513 |
if (!pci_find_bus(pci_find_root_bus(dom), bus))
|
514 |
return -1; |
515 |
|
516 |
*domp = dom; |
517 |
*busp = bus; |
518 |
*slotp = slot; |
519 |
if (funcp != NULL) |
520 |
*funcp = func; |
521 |
return 0; |
522 |
} |
523 |
|
524 |
int pci_read_devaddr(Monitor *mon, const char *addr, int *domp, int *busp, |
525 |
unsigned *slotp)
|
526 |
{ |
527 |
/* strip legacy tag */
|
528 |
if (!strncmp(addr, "pci_addr=", 9)) { |
529 |
addr += 9;
|
530 |
} |
531 |
if (pci_parse_devaddr(addr, domp, busp, slotp, NULL)) { |
532 |
monitor_printf(mon, "Invalid pci address\n");
|
533 |
return -1; |
534 |
} |
535 |
return 0; |
536 |
} |
537 |
|
538 |
PCIBus *pci_get_bus_devfn(int *devfnp, const char *devaddr) |
539 |
{ |
540 |
int dom, bus;
|
541 |
unsigned slot;
|
542 |
|
543 |
if (!devaddr) {
|
544 |
*devfnp = -1;
|
545 |
return pci_find_bus(pci_find_root_bus(0), 0); |
546 |
} |
547 |
|
548 |
if (pci_parse_devaddr(devaddr, &dom, &bus, &slot, NULL) < 0) { |
549 |
return NULL; |
550 |
} |
551 |
|
552 |
*devfnp = slot << 3;
|
553 |
return pci_find_bus(pci_find_root_bus(dom), bus);
|
554 |
} |
555 |
|
556 |
static void pci_init_cmask(PCIDevice *dev) |
557 |
{ |
558 |
pci_set_word(dev->cmask + PCI_VENDOR_ID, 0xffff);
|
559 |
pci_set_word(dev->cmask + PCI_DEVICE_ID, 0xffff);
|
560 |
dev->cmask[PCI_STATUS] = PCI_STATUS_CAP_LIST; |
561 |
dev->cmask[PCI_REVISION_ID] = 0xff;
|
562 |
dev->cmask[PCI_CLASS_PROG] = 0xff;
|
563 |
pci_set_word(dev->cmask + PCI_CLASS_DEVICE, 0xffff);
|
564 |
dev->cmask[PCI_HEADER_TYPE] = 0xff;
|
565 |
dev->cmask[PCI_CAPABILITY_LIST] = 0xff;
|
566 |
} |
567 |
|
568 |
static void pci_init_wmask(PCIDevice *dev) |
569 |
{ |
570 |
int config_size = pci_config_size(dev);
|
571 |
|
572 |
dev->wmask[PCI_CACHE_LINE_SIZE] = 0xff;
|
573 |
dev->wmask[PCI_INTERRUPT_LINE] = 0xff;
|
574 |
pci_set_word(dev->wmask + PCI_COMMAND, |
575 |
PCI_COMMAND_IO | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER | |
576 |
PCI_COMMAND_INTX_DISABLE); |
577 |
if (dev->cap_present & QEMU_PCI_CAP_SERR) {
|
578 |
pci_word_test_and_set_mask(dev->wmask + PCI_COMMAND, PCI_COMMAND_SERR); |
579 |
} |
580 |
|
581 |
memset(dev->wmask + PCI_CONFIG_HEADER_SIZE, 0xff,
|
582 |
config_size - PCI_CONFIG_HEADER_SIZE); |
583 |
} |
584 |
|
585 |
static void pci_init_w1cmask(PCIDevice *dev) |
586 |
{ |
587 |
/*
|
588 |
* Note: It's okay to set w1cmask even for readonly bits as
|
589 |
* long as their value is hardwired to 0.
|
590 |
*/
|
591 |
pci_set_word(dev->w1cmask + PCI_STATUS, |
592 |
PCI_STATUS_PARITY | PCI_STATUS_SIG_TARGET_ABORT | |
593 |
PCI_STATUS_REC_TARGET_ABORT | PCI_STATUS_REC_MASTER_ABORT | |
594 |
PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_DETECTED_PARITY); |
595 |
} |
596 |
|
597 |
static void pci_init_wmask_bridge(PCIDevice *d) |
598 |
{ |
599 |
/* PCI_PRIMARY_BUS, PCI_SECONDARY_BUS, PCI_SUBORDINATE_BUS and
|
600 |
PCI_SEC_LETENCY_TIMER */
|
601 |
memset(d->wmask + PCI_PRIMARY_BUS, 0xff, 4); |
602 |
|
603 |
/* base and limit */
|
604 |
d->wmask[PCI_IO_BASE] = PCI_IO_RANGE_MASK & 0xff;
|
605 |
d->wmask[PCI_IO_LIMIT] = PCI_IO_RANGE_MASK & 0xff;
|
606 |
pci_set_word(d->wmask + PCI_MEMORY_BASE, |
607 |
PCI_MEMORY_RANGE_MASK & 0xffff);
|
608 |
pci_set_word(d->wmask + PCI_MEMORY_LIMIT, |
609 |
PCI_MEMORY_RANGE_MASK & 0xffff);
|
610 |
pci_set_word(d->wmask + PCI_PREF_MEMORY_BASE, |
611 |
PCI_PREF_RANGE_MASK & 0xffff);
|
612 |
pci_set_word(d->wmask + PCI_PREF_MEMORY_LIMIT, |
613 |
PCI_PREF_RANGE_MASK & 0xffff);
|
614 |
|
615 |
/* PCI_PREF_BASE_UPPER32 and PCI_PREF_LIMIT_UPPER32 */
|
616 |
memset(d->wmask + PCI_PREF_BASE_UPPER32, 0xff, 8); |
617 |
|
618 |
/* TODO: add this define to pci_regs.h in linux and then in qemu. */
|
619 |
#define PCI_BRIDGE_CTL_VGA_16BIT 0x10 /* VGA 16-bit decode */ |
620 |
#define PCI_BRIDGE_CTL_DISCARD 0x100 /* Primary discard timer */ |
621 |
#define PCI_BRIDGE_CTL_SEC_DISCARD 0x200 /* Secondary discard timer */ |
622 |
#define PCI_BRIDGE_CTL_DISCARD_STATUS 0x400 /* Discard timer status */ |
623 |
#define PCI_BRIDGE_CTL_DISCARD_SERR 0x800 /* Discard timer SERR# enable */ |
624 |
pci_set_word(d->wmask + PCI_BRIDGE_CONTROL, |
625 |
PCI_BRIDGE_CTL_PARITY | |
626 |
PCI_BRIDGE_CTL_SERR | |
627 |
PCI_BRIDGE_CTL_ISA | |
628 |
PCI_BRIDGE_CTL_VGA | |
629 |
PCI_BRIDGE_CTL_VGA_16BIT | |
630 |
PCI_BRIDGE_CTL_MASTER_ABORT | |
631 |
PCI_BRIDGE_CTL_BUS_RESET | |
632 |
PCI_BRIDGE_CTL_FAST_BACK | |
633 |
PCI_BRIDGE_CTL_DISCARD | |
634 |
PCI_BRIDGE_CTL_SEC_DISCARD | |
635 |
PCI_BRIDGE_CTL_DISCARD_STATUS | |
636 |
PCI_BRIDGE_CTL_DISCARD_SERR); |
637 |
/* Below does not do anything as we never set this bit, put here for
|
638 |
* completeness. */
|
639 |
pci_set_word(d->w1cmask + PCI_BRIDGE_CONTROL, |
640 |
PCI_BRIDGE_CTL_DISCARD_STATUS); |
641 |
} |
642 |
|
643 |
static int pci_init_multifunction(PCIBus *bus, PCIDevice *dev) |
644 |
{ |
645 |
uint8_t slot = PCI_SLOT(dev->devfn); |
646 |
uint8_t func; |
647 |
|
648 |
if (dev->cap_present & QEMU_PCI_CAP_MULTIFUNCTION) {
|
649 |
dev->config[PCI_HEADER_TYPE] |= PCI_HEADER_TYPE_MULTI_FUNCTION; |
650 |
} |
651 |
|
652 |
/*
|
653 |
* multifunction bit is interpreted in two ways as follows.
|
654 |
* - all functions must set the bit to 1.
|
655 |
* Example: Intel X53
|
656 |
* - function 0 must set the bit, but the rest function (> 0)
|
657 |
* is allowed to leave the bit to 0.
|
658 |
* Example: PIIX3(also in qemu), PIIX4(also in qemu), ICH10,
|
659 |
*
|
660 |
* So OS (at least Linux) checks the bit of only function 0,
|
661 |
* and doesn't see the bit of function > 0.
|
662 |
*
|
663 |
* The below check allows both interpretation.
|
664 |
*/
|
665 |
if (PCI_FUNC(dev->devfn)) {
|
666 |
PCIDevice *f0 = bus->devices[PCI_DEVFN(slot, 0)];
|
667 |
if (f0 && !(f0->cap_present & QEMU_PCI_CAP_MULTIFUNCTION)) {
|
668 |
/* function 0 should set multifunction bit */
|
669 |
error_report("PCI: single function device can't be populated "
|
670 |
"in function %x.%x", slot, PCI_FUNC(dev->devfn));
|
671 |
return -1; |
672 |
} |
673 |
return 0; |
674 |
} |
675 |
|
676 |
if (dev->cap_present & QEMU_PCI_CAP_MULTIFUNCTION) {
|
677 |
return 0; |
678 |
} |
679 |
/* function 0 indicates single function, so function > 0 must be NULL */
|
680 |
for (func = 1; func < PCI_FUNC_MAX; ++func) { |
681 |
if (bus->devices[PCI_DEVFN(slot, func)]) {
|
682 |
error_report("PCI: %x.0 indicates single function, "
|
683 |
"but %x.%x is already populated.",
|
684 |
slot, slot, func); |
685 |
return -1; |
686 |
} |
687 |
} |
688 |
return 0; |
689 |
} |
690 |
|
691 |
static void pci_config_alloc(PCIDevice *pci_dev) |
692 |
{ |
693 |
int config_size = pci_config_size(pci_dev);
|
694 |
|
695 |
pci_dev->config = qemu_mallocz(config_size); |
696 |
pci_dev->cmask = qemu_mallocz(config_size); |
697 |
pci_dev->wmask = qemu_mallocz(config_size); |
698 |
pci_dev->w1cmask = qemu_mallocz(config_size); |
699 |
pci_dev->used = qemu_mallocz(config_size); |
700 |
} |
701 |
|
702 |
static void pci_config_free(PCIDevice *pci_dev) |
703 |
{ |
704 |
qemu_free(pci_dev->config); |
705 |
qemu_free(pci_dev->cmask); |
706 |
qemu_free(pci_dev->wmask); |
707 |
qemu_free(pci_dev->w1cmask); |
708 |
qemu_free(pci_dev->used); |
709 |
} |
710 |
|
711 |
/* -1 for devfn means auto assign */
|
712 |
static PCIDevice *do_pci_register_device(PCIDevice *pci_dev, PCIBus *bus,
|
713 |
const char *name, int devfn, |
714 |
PCIConfigReadFunc *config_read, |
715 |
PCIConfigWriteFunc *config_write, |
716 |
bool is_bridge)
|
717 |
{ |
718 |
if (devfn < 0) { |
719 |
for(devfn = bus->devfn_min ; devfn < ARRAY_SIZE(bus->devices);
|
720 |
devfn += PCI_FUNC_MAX) { |
721 |
if (!bus->devices[devfn])
|
722 |
goto found;
|
723 |
} |
724 |
error_report("PCI: no slot/function available for %s, all in use", name);
|
725 |
return NULL; |
726 |
found: ;
|
727 |
} else if (bus->devices[devfn]) { |
728 |
error_report("PCI: slot %d function %d not available for %s, in use by %s",
|
729 |
PCI_SLOT(devfn), PCI_FUNC(devfn), name, bus->devices[devfn]->name); |
730 |
return NULL; |
731 |
} |
732 |
pci_dev->bus = bus; |
733 |
pci_dev->devfn = devfn; |
734 |
pstrcpy(pci_dev->name, sizeof(pci_dev->name), name);
|
735 |
pci_dev->irq_state = 0;
|
736 |
pci_config_alloc(pci_dev); |
737 |
|
738 |
if (!is_bridge) {
|
739 |
pci_set_default_subsystem_id(pci_dev); |
740 |
} |
741 |
pci_init_cmask(pci_dev); |
742 |
pci_init_wmask(pci_dev); |
743 |
pci_init_w1cmask(pci_dev); |
744 |
if (is_bridge) {
|
745 |
pci_init_wmask_bridge(pci_dev); |
746 |
} |
747 |
if (pci_init_multifunction(bus, pci_dev)) {
|
748 |
pci_config_free(pci_dev); |
749 |
return NULL; |
750 |
} |
751 |
|
752 |
if (!config_read)
|
753 |
config_read = pci_default_read_config; |
754 |
if (!config_write)
|
755 |
config_write = pci_default_write_config; |
756 |
pci_dev->config_read = config_read; |
757 |
pci_dev->config_write = config_write; |
758 |
bus->devices[devfn] = pci_dev; |
759 |
pci_dev->irq = qemu_allocate_irqs(pci_set_irq, pci_dev, PCI_NUM_PINS); |
760 |
pci_dev->version_id = 2; /* Current pci device vmstate version */ |
761 |
return pci_dev;
|
762 |
} |
763 |
|
764 |
static void do_pci_unregister_device(PCIDevice *pci_dev) |
765 |
{ |
766 |
qemu_free_irqs(pci_dev->irq); |
767 |
pci_dev->bus->devices[pci_dev->devfn] = NULL;
|
768 |
pci_config_free(pci_dev); |
769 |
} |
770 |
|
771 |
PCIDevice *pci_register_device(PCIBus *bus, const char *name, |
772 |
int instance_size, int devfn, |
773 |
PCIConfigReadFunc *config_read, |
774 |
PCIConfigWriteFunc *config_write) |
775 |
{ |
776 |
PCIDevice *pci_dev; |
777 |
|
778 |
pci_dev = qemu_mallocz(instance_size); |
779 |
pci_dev = do_pci_register_device(pci_dev, bus, name, devfn, |
780 |
config_read, config_write, |
781 |
PCI_HEADER_TYPE_NORMAL); |
782 |
if (pci_dev == NULL) { |
783 |
hw_error("PCI: can't register device\n");
|
784 |
} |
785 |
return pci_dev;
|
786 |
} |
787 |
|
788 |
static target_phys_addr_t pci_to_cpu_addr(PCIBus *bus,
|
789 |
target_phys_addr_t addr) |
790 |
{ |
791 |
return addr + bus->mem_base;
|
792 |
} |
793 |
|
794 |
static void pci_unregister_io_regions(PCIDevice *pci_dev) |
795 |
{ |
796 |
PCIIORegion *r; |
797 |
int i;
|
798 |
|
799 |
for(i = 0; i < PCI_NUM_REGIONS; i++) { |
800 |
r = &pci_dev->io_regions[i]; |
801 |
if (!r->size || r->addr == PCI_BAR_UNMAPPED)
|
802 |
continue;
|
803 |
if (r->type == PCI_BASE_ADDRESS_SPACE_IO) {
|
804 |
isa_unassign_ioport(r->addr, r->filtered_size); |
805 |
} else {
|
806 |
cpu_register_physical_memory(pci_to_cpu_addr(pci_dev->bus, |
807 |
r->addr), |
808 |
r->filtered_size, |
809 |
IO_MEM_UNASSIGNED); |
810 |
} |
811 |
} |
812 |
} |
813 |
|
814 |
static int pci_unregister_device(DeviceState *dev) |
815 |
{ |
816 |
PCIDevice *pci_dev = DO_UPCAST(PCIDevice, qdev, dev); |
817 |
PCIDeviceInfo *info = DO_UPCAST(PCIDeviceInfo, qdev, dev->info); |
818 |
int ret = 0; |
819 |
|
820 |
if (info->exit)
|
821 |
ret = info->exit(pci_dev); |
822 |
if (ret)
|
823 |
return ret;
|
824 |
|
825 |
pci_unregister_io_regions(pci_dev); |
826 |
pci_del_option_rom(pci_dev); |
827 |
do_pci_unregister_device(pci_dev); |
828 |
return 0; |
829 |
} |
830 |
|
831 |
void pci_register_bar(PCIDevice *pci_dev, int region_num, |
832 |
pcibus_t size, uint8_t type, |
833 |
PCIMapIORegionFunc *map_func) |
834 |
{ |
835 |
PCIIORegion *r; |
836 |
uint32_t addr; |
837 |
uint64_t wmask; |
838 |
|
839 |
assert(region_num >= 0);
|
840 |
assert(region_num < PCI_NUM_REGIONS); |
841 |
if (size & (size-1)) { |
842 |
fprintf(stderr, "ERROR: PCI region size must be pow2 "
|
843 |
"type=0x%x, size=0x%"FMT_PCIBUS"\n", type, size); |
844 |
exit(1);
|
845 |
} |
846 |
|
847 |
r = &pci_dev->io_regions[region_num]; |
848 |
r->addr = PCI_BAR_UNMAPPED; |
849 |
r->size = size; |
850 |
r->filtered_size = size; |
851 |
r->type = type; |
852 |
r->map_func = map_func; |
853 |
|
854 |
wmask = ~(size - 1);
|
855 |
addr = pci_bar(pci_dev, region_num); |
856 |
if (region_num == PCI_ROM_SLOT) {
|
857 |
/* ROM enable bit is writeable */
|
858 |
wmask |= PCI_ROM_ADDRESS_ENABLE; |
859 |
} |
860 |
pci_set_long(pci_dev->config + addr, type); |
861 |
if (!(r->type & PCI_BASE_ADDRESS_SPACE_IO) &&
|
862 |
r->type & PCI_BASE_ADDRESS_MEM_TYPE_64) { |
863 |
pci_set_quad(pci_dev->wmask + addr, wmask); |
864 |
pci_set_quad(pci_dev->cmask + addr, ~0ULL);
|
865 |
} else {
|
866 |
pci_set_long(pci_dev->wmask + addr, wmask & 0xffffffff);
|
867 |
pci_set_long(pci_dev->cmask + addr, 0xffffffff);
|
868 |
} |
869 |
} |
870 |
|
871 |
static void pci_bridge_filter(PCIDevice *d, pcibus_t *addr, pcibus_t *size, |
872 |
uint8_t type) |
873 |
{ |
874 |
pcibus_t base = *addr; |
875 |
pcibus_t limit = *addr + *size - 1;
|
876 |
PCIDevice *br; |
877 |
|
878 |
for (br = d->bus->parent_dev; br; br = br->bus->parent_dev) {
|
879 |
uint16_t cmd = pci_get_word(d->config + PCI_COMMAND); |
880 |
|
881 |
if (type & PCI_BASE_ADDRESS_SPACE_IO) {
|
882 |
if (!(cmd & PCI_COMMAND_IO)) {
|
883 |
goto no_map;
|
884 |
} |
885 |
} else {
|
886 |
if (!(cmd & PCI_COMMAND_MEMORY)) {
|
887 |
goto no_map;
|
888 |
} |
889 |
} |
890 |
|
891 |
base = MAX(base, pci_bridge_get_base(br, type)); |
892 |
limit = MIN(limit, pci_bridge_get_limit(br, type)); |
893 |
} |
894 |
|
895 |
if (base > limit) {
|
896 |
goto no_map;
|
897 |
} |
898 |
*addr = base; |
899 |
*size = limit - base + 1;
|
900 |
return;
|
901 |
no_map:
|
902 |
*addr = PCI_BAR_UNMAPPED; |
903 |
*size = 0;
|
904 |
} |
905 |
|
906 |
static pcibus_t pci_bar_address(PCIDevice *d,
|
907 |
int reg, uint8_t type, pcibus_t size)
|
908 |
{ |
909 |
pcibus_t new_addr, last_addr; |
910 |
int bar = pci_bar(d, reg);
|
911 |
uint16_t cmd = pci_get_word(d->config + PCI_COMMAND); |
912 |
|
913 |
if (type & PCI_BASE_ADDRESS_SPACE_IO) {
|
914 |
if (!(cmd & PCI_COMMAND_IO)) {
|
915 |
return PCI_BAR_UNMAPPED;
|
916 |
} |
917 |
new_addr = pci_get_long(d->config + bar) & ~(size - 1);
|
918 |
last_addr = new_addr + size - 1;
|
919 |
/* NOTE: we have only 64K ioports on PC */
|
920 |
if (last_addr <= new_addr || new_addr == 0 || last_addr > UINT16_MAX) { |
921 |
return PCI_BAR_UNMAPPED;
|
922 |
} |
923 |
return new_addr;
|
924 |
} |
925 |
|
926 |
if (!(cmd & PCI_COMMAND_MEMORY)) {
|
927 |
return PCI_BAR_UNMAPPED;
|
928 |
} |
929 |
if (type & PCI_BASE_ADDRESS_MEM_TYPE_64) {
|
930 |
new_addr = pci_get_quad(d->config + bar); |
931 |
} else {
|
932 |
new_addr = pci_get_long(d->config + bar); |
933 |
} |
934 |
/* the ROM slot has a specific enable bit */
|
935 |
if (reg == PCI_ROM_SLOT && !(new_addr & PCI_ROM_ADDRESS_ENABLE)) {
|
936 |
return PCI_BAR_UNMAPPED;
|
937 |
} |
938 |
new_addr &= ~(size - 1);
|
939 |
last_addr = new_addr + size - 1;
|
940 |
/* NOTE: we do not support wrapping */
|
941 |
/* XXX: as we cannot support really dynamic
|
942 |
mappings, we handle specific values as invalid
|
943 |
mappings. */
|
944 |
if (last_addr <= new_addr || new_addr == 0 || |
945 |
last_addr == PCI_BAR_UNMAPPED) { |
946 |
return PCI_BAR_UNMAPPED;
|
947 |
} |
948 |
|
949 |
/* Now pcibus_t is 64bit.
|
950 |
* Check if 32 bit BAR wraps around explicitly.
|
951 |
* Without this, PC ide doesn't work well.
|
952 |
* TODO: remove this work around.
|
953 |
*/
|
954 |
if (!(type & PCI_BASE_ADDRESS_MEM_TYPE_64) && last_addr >= UINT32_MAX) {
|
955 |
return PCI_BAR_UNMAPPED;
|
956 |
} |
957 |
|
958 |
/*
|
959 |
* OS is allowed to set BAR beyond its addressable
|
960 |
* bits. For example, 32 bit OS can set 64bit bar
|
961 |
* to >4G. Check it. TODO: we might need to support
|
962 |
* it in the future for e.g. PAE.
|
963 |
*/
|
964 |
if (last_addr >= TARGET_PHYS_ADDR_MAX) {
|
965 |
return PCI_BAR_UNMAPPED;
|
966 |
} |
967 |
|
968 |
return new_addr;
|
969 |
} |
970 |
|
971 |
static void pci_update_mappings(PCIDevice *d) |
972 |
{ |
973 |
PCIIORegion *r; |
974 |
int i;
|
975 |
pcibus_t new_addr, filtered_size; |
976 |
|
977 |
for(i = 0; i < PCI_NUM_REGIONS; i++) { |
978 |
r = &d->io_regions[i]; |
979 |
|
980 |
/* this region isn't registered */
|
981 |
if (!r->size)
|
982 |
continue;
|
983 |
|
984 |
new_addr = pci_bar_address(d, i, r->type, r->size); |
985 |
|
986 |
/* bridge filtering */
|
987 |
filtered_size = r->size; |
988 |
if (new_addr != PCI_BAR_UNMAPPED) {
|
989 |
pci_bridge_filter(d, &new_addr, &filtered_size, r->type); |
990 |
} |
991 |
|
992 |
/* This bar isn't changed */
|
993 |
if (new_addr == r->addr && filtered_size == r->filtered_size)
|
994 |
continue;
|
995 |
|
996 |
/* now do the real mapping */
|
997 |
if (r->addr != PCI_BAR_UNMAPPED) {
|
998 |
if (r->type & PCI_BASE_ADDRESS_SPACE_IO) {
|
999 |
int class;
|
1000 |
/* NOTE: specific hack for IDE in PC case:
|
1001 |
only one byte must be mapped. */
|
1002 |
class = pci_get_word(d->config + PCI_CLASS_DEVICE); |
1003 |
if (class == 0x0101 && r->size == 4) { |
1004 |
isa_unassign_ioport(r->addr + 2, 1); |
1005 |
} else {
|
1006 |
isa_unassign_ioport(r->addr, r->filtered_size); |
1007 |
} |
1008 |
} else {
|
1009 |
cpu_register_physical_memory(pci_to_cpu_addr(d->bus, r->addr), |
1010 |
r->filtered_size, |
1011 |
IO_MEM_UNASSIGNED); |
1012 |
qemu_unregister_coalesced_mmio(r->addr, r->filtered_size); |
1013 |
} |
1014 |
} |
1015 |
r->addr = new_addr; |
1016 |
r->filtered_size = filtered_size; |
1017 |
if (r->addr != PCI_BAR_UNMAPPED) {
|
1018 |
/*
|
1019 |
* TODO: currently almost all the map funcions assumes
|
1020 |
* filtered_size == size and addr & ~(size - 1) == addr.
|
1021 |
* However with bridge filtering, they aren't always true.
|
1022 |
* Teach them such cases, such that filtered_size < size and
|
1023 |
* addr & (size - 1) != 0.
|
1024 |
*/
|
1025 |
if (r->type & PCI_BASE_ADDRESS_SPACE_IO) {
|
1026 |
r->map_func(d, i, r->addr, r->filtered_size, r->type); |
1027 |
} else {
|
1028 |
r->map_func(d, i, pci_to_cpu_addr(d->bus, r->addr), |
1029 |
r->filtered_size, r->type); |
1030 |
} |
1031 |
} |
1032 |
} |
1033 |
} |
1034 |
|
1035 |
static inline int pci_irq_disabled(PCIDevice *d) |
1036 |
{ |
1037 |
return pci_get_word(d->config + PCI_COMMAND) & PCI_COMMAND_INTX_DISABLE;
|
1038 |
} |
1039 |
|
1040 |
/* Called after interrupt disabled field update in config space,
|
1041 |
* assert/deassert interrupts if necessary.
|
1042 |
* Gets original interrupt disable bit value (before update). */
|
1043 |
static void pci_update_irq_disabled(PCIDevice *d, int was_irq_disabled) |
1044 |
{ |
1045 |
int i, disabled = pci_irq_disabled(d);
|
1046 |
if (disabled == was_irq_disabled)
|
1047 |
return;
|
1048 |
for (i = 0; i < PCI_NUM_PINS; ++i) { |
1049 |
int state = pci_irq_state(d, i);
|
1050 |
pci_change_irq_level(d, i, disabled ? -state : state); |
1051 |
} |
1052 |
} |
1053 |
|
1054 |
uint32_t pci_default_read_config(PCIDevice *d, |
1055 |
uint32_t address, int len)
|
1056 |
{ |
1057 |
uint32_t val = 0;
|
1058 |
assert(len == 1 || len == 2 || len == 4); |
1059 |
len = MIN(len, pci_config_size(d) - address); |
1060 |
memcpy(&val, d->config + address, len); |
1061 |
return le32_to_cpu(val);
|
1062 |
} |
1063 |
|
1064 |
void pci_default_write_config(PCIDevice *d, uint32_t addr, uint32_t val, int l) |
1065 |
{ |
1066 |
int i, was_irq_disabled = pci_irq_disabled(d);
|
1067 |
uint32_t config_size = pci_config_size(d); |
1068 |
|
1069 |
for (i = 0; i < l && addr + i < config_size; val >>= 8, ++i) { |
1070 |
uint8_t wmask = d->wmask[addr + i]; |
1071 |
uint8_t w1cmask = d->w1cmask[addr + i]; |
1072 |
assert(!(wmask & w1cmask)); |
1073 |
d->config[addr + i] = (d->config[addr + i] & ~wmask) | (val & wmask); |
1074 |
d->config[addr + i] &= ~(val & w1cmask); /* W1C: Write 1 to Clear */
|
1075 |
} |
1076 |
if (ranges_overlap(addr, l, PCI_BASE_ADDRESS_0, 24) || |
1077 |
ranges_overlap(addr, l, PCI_ROM_ADDRESS, 4) ||
|
1078 |
ranges_overlap(addr, l, PCI_ROM_ADDRESS1, 4) ||
|
1079 |
range_covers_byte(addr, l, PCI_COMMAND)) |
1080 |
pci_update_mappings(d); |
1081 |
|
1082 |
if (range_covers_byte(addr, l, PCI_COMMAND))
|
1083 |
pci_update_irq_disabled(d, was_irq_disabled); |
1084 |
} |
1085 |
|
1086 |
/***********************************************************/
|
1087 |
/* generic PCI irq support */
|
1088 |
|
1089 |
/* 0 <= irq_num <= 3. level must be 0 or 1 */
|
1090 |
static void pci_set_irq(void *opaque, int irq_num, int level) |
1091 |
{ |
1092 |
PCIDevice *pci_dev = opaque; |
1093 |
int change;
|
1094 |
|
1095 |
change = level - pci_irq_state(pci_dev, irq_num); |
1096 |
if (!change)
|
1097 |
return;
|
1098 |
|
1099 |
pci_set_irq_state(pci_dev, irq_num, level); |
1100 |
pci_update_irq_status(pci_dev); |
1101 |
if (pci_irq_disabled(pci_dev))
|
1102 |
return;
|
1103 |
pci_change_irq_level(pci_dev, irq_num, change); |
1104 |
} |
1105 |
|
1106 |
/***********************************************************/
|
1107 |
/* monitor info on PCI */
|
1108 |
|
1109 |
typedef struct { |
1110 |
uint16_t class; |
1111 |
const char *desc; |
1112 |
const char *fw_name; |
1113 |
uint16_t fw_ign_bits; |
1114 |
} pci_class_desc; |
1115 |
|
1116 |
static const pci_class_desc pci_class_descriptions[] = |
1117 |
{ |
1118 |
{ 0x0001, "VGA controller", "display"}, |
1119 |
{ 0x0100, "SCSI controller", "scsi"}, |
1120 |
{ 0x0101, "IDE controller", "ide"}, |
1121 |
{ 0x0102, "Floppy controller", "fdc"}, |
1122 |
{ 0x0103, "IPI controller", "ipi"}, |
1123 |
{ 0x0104, "RAID controller", "raid"}, |
1124 |
{ 0x0106, "SATA controller"}, |
1125 |
{ 0x0107, "SAS controller"}, |
1126 |
{ 0x0180, "Storage controller"}, |
1127 |
{ 0x0200, "Ethernet controller", "ethernet"}, |
1128 |
{ 0x0201, "Token Ring controller", "token-ring"}, |
1129 |
{ 0x0202, "FDDI controller", "fddi"}, |
1130 |
{ 0x0203, "ATM controller", "atm"}, |
1131 |
{ 0x0280, "Network controller"}, |
1132 |
{ 0x0300, "VGA controller", "display", 0x00ff}, |
1133 |
{ 0x0301, "XGA controller"}, |
1134 |
{ 0x0302, "3D controller"}, |
1135 |
{ 0x0380, "Display controller"}, |
1136 |
{ 0x0400, "Video controller", "video"}, |
1137 |
{ 0x0401, "Audio controller", "sound"}, |
1138 |
{ 0x0402, "Phone"}, |
1139 |
{ 0x0480, "Multimedia controller"}, |
1140 |
{ 0x0500, "RAM controller", "memory"}, |
1141 |
{ 0x0501, "Flash controller", "flash"}, |
1142 |
{ 0x0580, "Memory controller"}, |
1143 |
{ 0x0600, "Host bridge", "host"}, |
1144 |
{ 0x0601, "ISA bridge", "isa"}, |
1145 |
{ 0x0602, "EISA bridge", "eisa"}, |
1146 |
{ 0x0603, "MC bridge", "mca"}, |
1147 |
{ 0x0604, "PCI bridge", "pci"}, |
1148 |
{ 0x0605, "PCMCIA bridge", "pcmcia"}, |
1149 |
{ 0x0606, "NUBUS bridge", "nubus"}, |
1150 |
{ 0x0607, "CARDBUS bridge", "cardbus"}, |
1151 |
{ 0x0608, "RACEWAY bridge"}, |
1152 |
{ 0x0680, "Bridge"}, |
1153 |
{ 0x0700, "Serial port", "serial"}, |
1154 |
{ 0x0701, "Parallel port", "parallel"}, |
1155 |
{ 0x0800, "Interrupt controller", "interrupt-controller"}, |
1156 |
{ 0x0801, "DMA controller", "dma-controller"}, |
1157 |
{ 0x0802, "Timer", "timer"}, |
1158 |
{ 0x0803, "RTC", "rtc"}, |
1159 |
{ 0x0900, "Keyboard", "keyboard"}, |
1160 |
{ 0x0901, "Pen", "pen"}, |
1161 |
{ 0x0902, "Mouse", "mouse"}, |
1162 |
{ 0x0A00, "Dock station", "dock", 0x00ff}, |
1163 |
{ 0x0B00, "i386 cpu", "cpu", 0x00ff}, |
1164 |
{ 0x0c00, "Fireware contorller", "fireware"}, |
1165 |
{ 0x0c01, "Access bus controller", "access-bus"}, |
1166 |
{ 0x0c02, "SSA controller", "ssa"}, |
1167 |
{ 0x0c03, "USB controller", "usb"}, |
1168 |
{ 0x0c04, "Fibre channel controller", "fibre-channel"}, |
1169 |
{ 0, NULL} |
1170 |
}; |
1171 |
|
1172 |
static void pci_for_each_device_under_bus(PCIBus *bus, |
1173 |
void (*fn)(PCIBus *b, PCIDevice *d))
|
1174 |
{ |
1175 |
PCIDevice *d; |
1176 |
int devfn;
|
1177 |
|
1178 |
for(devfn = 0; devfn < ARRAY_SIZE(bus->devices); devfn++) { |
1179 |
d = bus->devices[devfn]; |
1180 |
if (d) {
|
1181 |
fn(bus, d); |
1182 |
} |
1183 |
} |
1184 |
} |
1185 |
|
1186 |
void pci_for_each_device(PCIBus *bus, int bus_num, |
1187 |
void (*fn)(PCIBus *b, PCIDevice *d))
|
1188 |
{ |
1189 |
bus = pci_find_bus(bus, bus_num); |
1190 |
|
1191 |
if (bus) {
|
1192 |
pci_for_each_device_under_bus(bus, fn); |
1193 |
} |
1194 |
} |
1195 |
|
1196 |
static void pci_device_print(Monitor *mon, QDict *device) |
1197 |
{ |
1198 |
QDict *qdict; |
1199 |
QListEntry *entry; |
1200 |
uint64_t addr, size; |
1201 |
|
1202 |
monitor_printf(mon, " Bus %2" PRId64 ", ", qdict_get_int(device, "bus")); |
1203 |
monitor_printf(mon, "device %3" PRId64 ", function %" PRId64 ":\n", |
1204 |
qdict_get_int(device, "slot"),
|
1205 |
qdict_get_int(device, "function"));
|
1206 |
monitor_printf(mon, " ");
|
1207 |
|
1208 |
qdict = qdict_get_qdict(device, "class_info");
|
1209 |
if (qdict_haskey(qdict, "desc")) { |
1210 |
monitor_printf(mon, "%s", qdict_get_str(qdict, "desc")); |
1211 |
} else {
|
1212 |
monitor_printf(mon, "Class %04" PRId64, qdict_get_int(qdict, "class")); |
1213 |
} |
1214 |
|
1215 |
qdict = qdict_get_qdict(device, "id");
|
1216 |
monitor_printf(mon, ": PCI device %04" PRIx64 ":%04" PRIx64 "\n", |
1217 |
qdict_get_int(qdict, "device"),
|
1218 |
qdict_get_int(qdict, "vendor"));
|
1219 |
|
1220 |
if (qdict_haskey(device, "irq")) { |
1221 |
monitor_printf(mon, " IRQ %" PRId64 ".\n", |
1222 |
qdict_get_int(device, "irq"));
|
1223 |
} |
1224 |
|
1225 |
if (qdict_haskey(device, "pci_bridge")) { |
1226 |
QDict *info; |
1227 |
|
1228 |
qdict = qdict_get_qdict(device, "pci_bridge");
|
1229 |
|
1230 |
info = qdict_get_qdict(qdict, "bus");
|
1231 |
monitor_printf(mon, " BUS %" PRId64 ".\n", |
1232 |
qdict_get_int(info, "number"));
|
1233 |
monitor_printf(mon, " secondary bus %" PRId64 ".\n", |
1234 |
qdict_get_int(info, "secondary"));
|
1235 |
monitor_printf(mon, " subordinate bus %" PRId64 ".\n", |
1236 |
qdict_get_int(info, "subordinate"));
|
1237 |
|
1238 |
info = qdict_get_qdict(qdict, "io_range");
|
1239 |
monitor_printf(mon, " IO range [0x%04"PRIx64", 0x%04"PRIx64"]\n", |
1240 |
qdict_get_int(info, "base"),
|
1241 |
qdict_get_int(info, "limit"));
|
1242 |
|
1243 |
info = qdict_get_qdict(qdict, "memory_range");
|
1244 |
monitor_printf(mon, |
1245 |
" memory range [0x%08"PRIx64", 0x%08"PRIx64"]\n", |
1246 |
qdict_get_int(info, "base"),
|
1247 |
qdict_get_int(info, "limit"));
|
1248 |
|
1249 |
info = qdict_get_qdict(qdict, "prefetchable_range");
|
1250 |
monitor_printf(mon, " prefetchable memory range "
|
1251 |
"[0x%08"PRIx64", 0x%08"PRIx64"]\n", |
1252 |
qdict_get_int(info, "base"),
|
1253 |
qdict_get_int(info, "limit"));
|
1254 |
} |
1255 |
|
1256 |
QLIST_FOREACH_ENTRY(qdict_get_qlist(device, "regions"), entry) {
|
1257 |
qdict = qobject_to_qdict(qlist_entry_obj(entry)); |
1258 |
monitor_printf(mon, " BAR%d: ", (int) qdict_get_int(qdict, "bar")); |
1259 |
|
1260 |
addr = qdict_get_int(qdict, "address");
|
1261 |
size = qdict_get_int(qdict, "size");
|
1262 |
|
1263 |
if (!strcmp(qdict_get_str(qdict, "type"), "io")) { |
1264 |
monitor_printf(mon, "I/O at 0x%04"FMT_PCIBUS
|
1265 |
" [0x%04"FMT_PCIBUS"].\n", |
1266 |
addr, addr + size - 1);
|
1267 |
} else {
|
1268 |
monitor_printf(mon, "%d bit%s memory at 0x%08"FMT_PCIBUS
|
1269 |
" [0x%08"FMT_PCIBUS"].\n", |
1270 |
qdict_get_bool(qdict, "mem_type_64") ? 64 : 32, |
1271 |
qdict_get_bool(qdict, "prefetch") ?
|
1272 |
" prefetchable" : "", addr, addr + size - 1); |
1273 |
} |
1274 |
} |
1275 |
|
1276 |
monitor_printf(mon, " id \"%s\"\n", qdict_get_str(device, "qdev_id")); |
1277 |
|
1278 |
if (qdict_haskey(device, "pci_bridge")) { |
1279 |
qdict = qdict_get_qdict(device, "pci_bridge");
|
1280 |
if (qdict_haskey(qdict, "devices")) { |
1281 |
QListEntry *dev; |
1282 |
QLIST_FOREACH_ENTRY(qdict_get_qlist(qdict, "devices"), dev) {
|
1283 |
pci_device_print(mon, qobject_to_qdict(qlist_entry_obj(dev))); |
1284 |
} |
1285 |
} |
1286 |
} |
1287 |
} |
1288 |
|
1289 |
void do_pci_info_print(Monitor *mon, const QObject *data) |
1290 |
{ |
1291 |
QListEntry *bus, *dev; |
1292 |
|
1293 |
QLIST_FOREACH_ENTRY(qobject_to_qlist(data), bus) { |
1294 |
QDict *qdict = qobject_to_qdict(qlist_entry_obj(bus)); |
1295 |
QLIST_FOREACH_ENTRY(qdict_get_qlist(qdict, "devices"), dev) {
|
1296 |
pci_device_print(mon, qobject_to_qdict(qlist_entry_obj(dev))); |
1297 |
} |
1298 |
} |
1299 |
} |
1300 |
|
1301 |
static QObject *pci_get_dev_class(const PCIDevice *dev) |
1302 |
{ |
1303 |
int class;
|
1304 |
const pci_class_desc *desc;
|
1305 |
|
1306 |
class = pci_get_word(dev->config + PCI_CLASS_DEVICE); |
1307 |
desc = pci_class_descriptions; |
1308 |
while (desc->desc && class != desc->class)
|
1309 |
desc++; |
1310 |
|
1311 |
if (desc->desc) {
|
1312 |
return qobject_from_jsonf("{ 'desc': %s, 'class': %d }", |
1313 |
desc->desc, class); |
1314 |
} else {
|
1315 |
return qobject_from_jsonf("{ 'class': %d }", class); |
1316 |
} |
1317 |
} |
1318 |
|
1319 |
static QObject *pci_get_dev_id(const PCIDevice *dev) |
1320 |
{ |
1321 |
return qobject_from_jsonf("{ 'device': %d, 'vendor': %d }", |
1322 |
pci_get_word(dev->config + PCI_VENDOR_ID), |
1323 |
pci_get_word(dev->config + PCI_DEVICE_ID)); |
1324 |
} |
1325 |
|
1326 |
static QObject *pci_get_regions_list(const PCIDevice *dev) |
1327 |
{ |
1328 |
int i;
|
1329 |
QList *regions_list; |
1330 |
|
1331 |
regions_list = qlist_new(); |
1332 |
|
1333 |
for (i = 0; i < PCI_NUM_REGIONS; i++) { |
1334 |
QObject *obj; |
1335 |
const PCIIORegion *r = &dev->io_regions[i];
|
1336 |
|
1337 |
if (!r->size) {
|
1338 |
continue;
|
1339 |
} |
1340 |
|
1341 |
if (r->type & PCI_BASE_ADDRESS_SPACE_IO) {
|
1342 |
obj = qobject_from_jsonf("{ 'bar': %d, 'type': 'io', "
|
1343 |
"'address': %" PRId64 ", " |
1344 |
"'size': %" PRId64 " }", |
1345 |
i, r->addr, r->size); |
1346 |
} else {
|
1347 |
int mem_type_64 = r->type & PCI_BASE_ADDRESS_MEM_TYPE_64;
|
1348 |
|
1349 |
obj = qobject_from_jsonf("{ 'bar': %d, 'type': 'memory', "
|
1350 |
"'mem_type_64': %i, 'prefetch': %i, "
|
1351 |
"'address': %" PRId64 ", " |
1352 |
"'size': %" PRId64 " }", |
1353 |
i, mem_type_64, |
1354 |
r->type & PCI_BASE_ADDRESS_MEM_PREFETCH, |
1355 |
r->addr, r->size); |
1356 |
} |
1357 |
|
1358 |
qlist_append_obj(regions_list, obj); |
1359 |
} |
1360 |
|
1361 |
return QOBJECT(regions_list);
|
1362 |
} |
1363 |
|
1364 |
static QObject *pci_get_devices_list(PCIBus *bus, int bus_num); |
1365 |
|
1366 |
static QObject *pci_get_dev_dict(PCIDevice *dev, PCIBus *bus, int bus_num) |
1367 |
{ |
1368 |
uint8_t type; |
1369 |
QObject *obj; |
1370 |
|
1371 |
obj = qobject_from_jsonf("{ 'bus': %d, 'slot': %d, 'function': %d," "'class_info': %p, 'id': %p, 'regions': %p," |
1372 |
" 'qdev_id': %s }",
|
1373 |
bus_num, |
1374 |
PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn), |
1375 |
pci_get_dev_class(dev), pci_get_dev_id(dev), |
1376 |
pci_get_regions_list(dev), |
1377 |
dev->qdev.id ? dev->qdev.id : "");
|
1378 |
|
1379 |
if (dev->config[PCI_INTERRUPT_PIN] != 0) { |
1380 |
QDict *qdict = qobject_to_qdict(obj); |
1381 |
qdict_put(qdict, "irq", qint_from_int(dev->config[PCI_INTERRUPT_LINE]));
|
1382 |
} |
1383 |
|
1384 |
type = dev->config[PCI_HEADER_TYPE] & ~PCI_HEADER_TYPE_MULTI_FUNCTION; |
1385 |
if (type == PCI_HEADER_TYPE_BRIDGE) {
|
1386 |
QDict *qdict; |
1387 |
QObject *pci_bridge; |
1388 |
|
1389 |
pci_bridge = qobject_from_jsonf("{ 'bus': "
|
1390 |
"{ 'number': %d, 'secondary': %d, 'subordinate': %d }, "
|
1391 |
"'io_range': { 'base': %" PRId64 ", 'limit': %" PRId64 "}, " |
1392 |
"'memory_range': { 'base': %" PRId64 ", 'limit': %" PRId64 "}, " |
1393 |
"'prefetchable_range': { 'base': %" PRId64 ", 'limit': %" PRId64 "} }", |
1394 |
dev->config[PCI_PRIMARY_BUS], dev->config[PCI_SECONDARY_BUS], |
1395 |
dev->config[PCI_SUBORDINATE_BUS], |
1396 |
pci_bridge_get_base(dev, PCI_BASE_ADDRESS_SPACE_IO), |
1397 |
pci_bridge_get_limit(dev, PCI_BASE_ADDRESS_SPACE_IO), |
1398 |
pci_bridge_get_base(dev, PCI_BASE_ADDRESS_SPACE_MEMORY), |
1399 |
pci_bridge_get_limit(dev, PCI_BASE_ADDRESS_SPACE_MEMORY), |
1400 |
pci_bridge_get_base(dev, PCI_BASE_ADDRESS_SPACE_MEMORY | |
1401 |
PCI_BASE_ADDRESS_MEM_PREFETCH), |
1402 |
pci_bridge_get_limit(dev, PCI_BASE_ADDRESS_SPACE_MEMORY | |
1403 |
PCI_BASE_ADDRESS_MEM_PREFETCH)); |
1404 |
|
1405 |
if (dev->config[PCI_SECONDARY_BUS] != 0) { |
1406 |
PCIBus *child_bus = pci_find_bus(bus, dev->config[PCI_SECONDARY_BUS]); |
1407 |
|
1408 |
if (child_bus) {
|
1409 |
qdict = qobject_to_qdict(pci_bridge); |
1410 |
qdict_put_obj(qdict, "devices",
|
1411 |
pci_get_devices_list(child_bus, |
1412 |
dev->config[PCI_SECONDARY_BUS])); |
1413 |
} |
1414 |
} |
1415 |
qdict = qobject_to_qdict(obj); |
1416 |
qdict_put_obj(qdict, "pci_bridge", pci_bridge);
|
1417 |
} |
1418 |
|
1419 |
return obj;
|
1420 |
} |
1421 |
|
1422 |
static QObject *pci_get_devices_list(PCIBus *bus, int bus_num) |
1423 |
{ |
1424 |
int devfn;
|
1425 |
PCIDevice *dev; |
1426 |
QList *dev_list; |
1427 |
|
1428 |
dev_list = qlist_new(); |
1429 |
|
1430 |
for (devfn = 0; devfn < ARRAY_SIZE(bus->devices); devfn++) { |
1431 |
dev = bus->devices[devfn]; |
1432 |
if (dev) {
|
1433 |
qlist_append_obj(dev_list, pci_get_dev_dict(dev, bus, bus_num)); |
1434 |
} |
1435 |
} |
1436 |
|
1437 |
return QOBJECT(dev_list);
|
1438 |
} |
1439 |
|
1440 |
static QObject *pci_get_bus_dict(PCIBus *bus, int bus_num) |
1441 |
{ |
1442 |
bus = pci_find_bus(bus, bus_num); |
1443 |
if (bus) {
|
1444 |
return qobject_from_jsonf("{ 'bus': %d, 'devices': %p }", |
1445 |
bus_num, pci_get_devices_list(bus, bus_num)); |
1446 |
} |
1447 |
|
1448 |
return NULL; |
1449 |
} |
1450 |
|
1451 |
void do_pci_info(Monitor *mon, QObject **ret_data)
|
1452 |
{ |
1453 |
QList *bus_list; |
1454 |
struct PCIHostBus *host;
|
1455 |
|
1456 |
bus_list = qlist_new(); |
1457 |
|
1458 |
QLIST_FOREACH(host, &host_buses, next) { |
1459 |
QObject *obj = pci_get_bus_dict(host->bus, 0);
|
1460 |
if (obj) {
|
1461 |
qlist_append_obj(bus_list, obj); |
1462 |
} |
1463 |
} |
1464 |
|
1465 |
*ret_data = QOBJECT(bus_list); |
1466 |
} |
1467 |
|
1468 |
static const char * const pci_nic_models[] = { |
1469 |
"ne2k_pci",
|
1470 |
"i82551",
|
1471 |
"i82557b",
|
1472 |
"i82559er",
|
1473 |
"rtl8139",
|
1474 |
"e1000",
|
1475 |
"pcnet",
|
1476 |
"virtio",
|
1477 |
NULL
|
1478 |
}; |
1479 |
|
1480 |
static const char * const pci_nic_names[] = { |
1481 |
"ne2k_pci",
|
1482 |
"i82551",
|
1483 |
"i82557b",
|
1484 |
"i82559er",
|
1485 |
"rtl8139",
|
1486 |
"e1000",
|
1487 |
"pcnet",
|
1488 |
"virtio-net-pci",
|
1489 |
NULL
|
1490 |
}; |
1491 |
|
1492 |
/* Initialize a PCI NIC. */
|
1493 |
/* FIXME callers should check for failure, but don't */
|
1494 |
PCIDevice *pci_nic_init(NICInfo *nd, const char *default_model, |
1495 |
const char *default_devaddr) |
1496 |
{ |
1497 |
const char *devaddr = nd->devaddr ? nd->devaddr : default_devaddr; |
1498 |
PCIBus *bus; |
1499 |
int devfn;
|
1500 |
PCIDevice *pci_dev; |
1501 |
DeviceState *dev; |
1502 |
int i;
|
1503 |
|
1504 |
i = qemu_find_nic_model(nd, pci_nic_models, default_model); |
1505 |
if (i < 0) |
1506 |
return NULL; |
1507 |
|
1508 |
bus = pci_get_bus_devfn(&devfn, devaddr); |
1509 |
if (!bus) {
|
1510 |
error_report("Invalid PCI device address %s for device %s",
|
1511 |
devaddr, pci_nic_names[i]); |
1512 |
return NULL; |
1513 |
} |
1514 |
|
1515 |
pci_dev = pci_create(bus, devfn, pci_nic_names[i]); |
1516 |
dev = &pci_dev->qdev; |
1517 |
qdev_set_nic_properties(dev, nd); |
1518 |
if (qdev_init(dev) < 0) |
1519 |
return NULL; |
1520 |
return pci_dev;
|
1521 |
} |
1522 |
|
1523 |
PCIDevice *pci_nic_init_nofail(NICInfo *nd, const char *default_model, |
1524 |
const char *default_devaddr) |
1525 |
{ |
1526 |
PCIDevice *res; |
1527 |
|
1528 |
if (qemu_show_nic_models(nd->model, pci_nic_models))
|
1529 |
exit(0);
|
1530 |
|
1531 |
res = pci_nic_init(nd, default_model, default_devaddr); |
1532 |
if (!res)
|
1533 |
exit(1);
|
1534 |
return res;
|
1535 |
} |
1536 |
|
1537 |
static void pci_bridge_update_mappings_fn(PCIBus *b, PCIDevice *d) |
1538 |
{ |
1539 |
pci_update_mappings(d); |
1540 |
} |
1541 |
|
1542 |
void pci_bridge_update_mappings(PCIBus *b)
|
1543 |
{ |
1544 |
PCIBus *child; |
1545 |
|
1546 |
pci_for_each_device_under_bus(b, pci_bridge_update_mappings_fn); |
1547 |
|
1548 |
QLIST_FOREACH(child, &b->child, sibling) { |
1549 |
pci_bridge_update_mappings(child); |
1550 |
} |
1551 |
} |
1552 |
|
1553 |
/* Whether a given bus number is in range of the secondary
|
1554 |
* bus of the given bridge device. */
|
1555 |
static bool pci_secondary_bus_in_range(PCIDevice *dev, int bus_num) |
1556 |
{ |
1557 |
return !(pci_get_word(dev->config + PCI_BRIDGE_CONTROL) &
|
1558 |
PCI_BRIDGE_CTL_BUS_RESET) /* Don't walk the bus if it's reset. */ &&
|
1559 |
dev->config[PCI_SECONDARY_BUS] < bus_num && |
1560 |
bus_num <= dev->config[PCI_SUBORDINATE_BUS]; |
1561 |
} |
1562 |
|
1563 |
PCIBus *pci_find_bus(PCIBus *bus, int bus_num)
|
1564 |
{ |
1565 |
PCIBus *sec; |
1566 |
|
1567 |
if (!bus) {
|
1568 |
return NULL; |
1569 |
} |
1570 |
|
1571 |
if (pci_bus_num(bus) == bus_num) {
|
1572 |
return bus;
|
1573 |
} |
1574 |
|
1575 |
/* Consider all bus numbers in range for the host pci bridge. */
|
1576 |
if (bus->parent_dev &&
|
1577 |
!pci_secondary_bus_in_range(bus->parent_dev, bus_num)) { |
1578 |
return NULL; |
1579 |
} |
1580 |
|
1581 |
/* try child bus */
|
1582 |
for (; bus; bus = sec) {
|
1583 |
QLIST_FOREACH(sec, &bus->child, sibling) { |
1584 |
assert(sec->parent_dev); |
1585 |
if (sec->parent_dev->config[PCI_SECONDARY_BUS] == bus_num) {
|
1586 |
return sec;
|
1587 |
} |
1588 |
if (pci_secondary_bus_in_range(sec->parent_dev, bus_num)) {
|
1589 |
break;
|
1590 |
} |
1591 |
} |
1592 |
} |
1593 |
|
1594 |
return NULL; |
1595 |
} |
1596 |
|
1597 |
PCIDevice *pci_find_device(PCIBus *bus, int bus_num, int slot, int function) |
1598 |
{ |
1599 |
bus = pci_find_bus(bus, bus_num); |
1600 |
|
1601 |
if (!bus)
|
1602 |
return NULL; |
1603 |
|
1604 |
return bus->devices[PCI_DEVFN(slot, function)];
|
1605 |
} |
1606 |
|
1607 |
static int pci_qdev_init(DeviceState *qdev, DeviceInfo *base) |
1608 |
{ |
1609 |
PCIDevice *pci_dev = (PCIDevice *)qdev; |
1610 |
PCIDeviceInfo *info = container_of(base, PCIDeviceInfo, qdev); |
1611 |
PCIBus *bus; |
1612 |
int devfn, rc;
|
1613 |
bool is_default_rom;
|
1614 |
|
1615 |
/* initialize cap_present for pci_is_express() and pci_config_size() */
|
1616 |
if (info->is_express) {
|
1617 |
pci_dev->cap_present |= QEMU_PCI_CAP_EXPRESS; |
1618 |
} |
1619 |
|
1620 |
bus = FROM_QBUS(PCIBus, qdev_get_parent_bus(qdev)); |
1621 |
devfn = pci_dev->devfn; |
1622 |
pci_dev = do_pci_register_device(pci_dev, bus, base->name, devfn, |
1623 |
info->config_read, info->config_write, |
1624 |
info->is_bridge); |
1625 |
if (pci_dev == NULL) |
1626 |
return -1; |
1627 |
if (qdev->hotplugged && info->no_hotplug) {
|
1628 |
qerror_report(QERR_DEVICE_NO_HOTPLUG, info->qdev.name); |
1629 |
do_pci_unregister_device(pci_dev); |
1630 |
return -1; |
1631 |
} |
1632 |
rc = info->init(pci_dev); |
1633 |
if (rc != 0) { |
1634 |
do_pci_unregister_device(pci_dev); |
1635 |
return rc;
|
1636 |
} |
1637 |
|
1638 |
/* rom loading */
|
1639 |
is_default_rom = false;
|
1640 |
if (pci_dev->romfile == NULL && info->romfile != NULL) { |
1641 |
pci_dev->romfile = qemu_strdup(info->romfile); |
1642 |
is_default_rom = true;
|
1643 |
} |
1644 |
pci_add_option_rom(pci_dev, is_default_rom); |
1645 |
|
1646 |
if (bus->hotplug) {
|
1647 |
/* Let buses differentiate between hotplug and when device is
|
1648 |
* enabled during qemu machine creation. */
|
1649 |
rc = bus->hotplug(bus->hotplug_qdev, pci_dev, |
1650 |
qdev->hotplugged ? PCI_HOTPLUG_ENABLED: |
1651 |
PCI_COLDPLUG_ENABLED); |
1652 |
if (rc != 0) { |
1653 |
int r = pci_unregister_device(&pci_dev->qdev);
|
1654 |
assert(!r); |
1655 |
return rc;
|
1656 |
} |
1657 |
} |
1658 |
return 0; |
1659 |
} |
1660 |
|
1661 |
static int pci_unplug_device(DeviceState *qdev) |
1662 |
{ |
1663 |
PCIDevice *dev = DO_UPCAST(PCIDevice, qdev, qdev); |
1664 |
PCIDeviceInfo *info = container_of(qdev->info, PCIDeviceInfo, qdev); |
1665 |
|
1666 |
if (info->no_hotplug) {
|
1667 |
qerror_report(QERR_DEVICE_NO_HOTPLUG, info->qdev.name); |
1668 |
return -1; |
1669 |
} |
1670 |
return dev->bus->hotplug(dev->bus->hotplug_qdev, dev,
|
1671 |
PCI_HOTPLUG_DISABLED); |
1672 |
} |
1673 |
|
1674 |
void pci_qdev_register(PCIDeviceInfo *info)
|
1675 |
{ |
1676 |
info->qdev.init = pci_qdev_init; |
1677 |
info->qdev.unplug = pci_unplug_device; |
1678 |
info->qdev.exit = pci_unregister_device; |
1679 |
info->qdev.bus_info = &pci_bus_info; |
1680 |
qdev_register(&info->qdev); |
1681 |
} |
1682 |
|
1683 |
void pci_qdev_register_many(PCIDeviceInfo *info)
|
1684 |
{ |
1685 |
while (info->qdev.name) {
|
1686 |
pci_qdev_register(info); |
1687 |
info++; |
1688 |
} |
1689 |
} |
1690 |
|
1691 |
PCIDevice *pci_create_multifunction(PCIBus *bus, int devfn, bool multifunction, |
1692 |
const char *name) |
1693 |
{ |
1694 |
DeviceState *dev; |
1695 |
|
1696 |
dev = qdev_create(&bus->qbus, name); |
1697 |
qdev_prop_set_uint32(dev, "addr", devfn);
|
1698 |
qdev_prop_set_bit(dev, "multifunction", multifunction);
|
1699 |
return DO_UPCAST(PCIDevice, qdev, dev);
|
1700 |
} |
1701 |
|
1702 |
PCIDevice *pci_create_simple_multifunction(PCIBus *bus, int devfn,
|
1703 |
bool multifunction,
|
1704 |
const char *name) |
1705 |
{ |
1706 |
PCIDevice *dev = pci_create_multifunction(bus, devfn, multifunction, name); |
1707 |
qdev_init_nofail(&dev->qdev); |
1708 |
return dev;
|
1709 |
} |
1710 |
|
1711 |
PCIDevice *pci_create(PCIBus *bus, int devfn, const char *name) |
1712 |
{ |
1713 |
return pci_create_multifunction(bus, devfn, false, name); |
1714 |
} |
1715 |
|
1716 |
PCIDevice *pci_create_simple(PCIBus *bus, int devfn, const char *name) |
1717 |
{ |
1718 |
return pci_create_simple_multifunction(bus, devfn, false, name); |
1719 |
} |
1720 |
|
1721 |
static int pci_find_space(PCIDevice *pdev, uint8_t size) |
1722 |
{ |
1723 |
int config_size = pci_config_size(pdev);
|
1724 |
int offset = PCI_CONFIG_HEADER_SIZE;
|
1725 |
int i;
|
1726 |
for (i = PCI_CONFIG_HEADER_SIZE; i < config_size; ++i)
|
1727 |
if (pdev->used[i])
|
1728 |
offset = i + 1;
|
1729 |
else if (i - offset + 1 == size) |
1730 |
return offset;
|
1731 |
return 0; |
1732 |
} |
1733 |
|
1734 |
static uint8_t pci_find_capability_list(PCIDevice *pdev, uint8_t cap_id,
|
1735 |
uint8_t *prev_p) |
1736 |
{ |
1737 |
uint8_t next, prev; |
1738 |
|
1739 |
if (!(pdev->config[PCI_STATUS] & PCI_STATUS_CAP_LIST))
|
1740 |
return 0; |
1741 |
|
1742 |
for (prev = PCI_CAPABILITY_LIST; (next = pdev->config[prev]);
|
1743 |
prev = next + PCI_CAP_LIST_NEXT) |
1744 |
if (pdev->config[next + PCI_CAP_LIST_ID] == cap_id)
|
1745 |
break;
|
1746 |
|
1747 |
if (prev_p)
|
1748 |
*prev_p = prev; |
1749 |
return next;
|
1750 |
} |
1751 |
|
1752 |
static void pci_map_option_rom(PCIDevice *pdev, int region_num, pcibus_t addr, pcibus_t size, int type) |
1753 |
{ |
1754 |
cpu_register_physical_memory(addr, size, pdev->rom_offset); |
1755 |
} |
1756 |
|
1757 |
/* Patch the PCI vendor and device ids in a PCI rom image if necessary.
|
1758 |
This is needed for an option rom which is used for more than one device. */
|
1759 |
static void pci_patch_ids(PCIDevice *pdev, uint8_t *ptr, int size) |
1760 |
{ |
1761 |
uint16_t vendor_id; |
1762 |
uint16_t device_id; |
1763 |
uint16_t rom_vendor_id; |
1764 |
uint16_t rom_device_id; |
1765 |
uint16_t rom_magic; |
1766 |
uint16_t pcir_offset; |
1767 |
uint8_t checksum; |
1768 |
|
1769 |
/* Words in rom data are little endian (like in PCI configuration),
|
1770 |
so they can be read / written with pci_get_word / pci_set_word. */
|
1771 |
|
1772 |
/* Only a valid rom will be patched. */
|
1773 |
rom_magic = pci_get_word(ptr); |
1774 |
if (rom_magic != 0xaa55) { |
1775 |
PCI_DPRINTF("Bad ROM magic %04x\n", rom_magic);
|
1776 |
return;
|
1777 |
} |
1778 |
pcir_offset = pci_get_word(ptr + 0x18);
|
1779 |
if (pcir_offset + 8 >= size || memcmp(ptr + pcir_offset, "PCIR", 4)) { |
1780 |
PCI_DPRINTF("Bad PCIR offset 0x%x or signature\n", pcir_offset);
|
1781 |
return;
|
1782 |
} |
1783 |
|
1784 |
vendor_id = pci_get_word(pdev->config + PCI_VENDOR_ID); |
1785 |
device_id = pci_get_word(pdev->config + PCI_DEVICE_ID); |
1786 |
rom_vendor_id = pci_get_word(ptr + pcir_offset + 4);
|
1787 |
rom_device_id = pci_get_word(ptr + pcir_offset + 6);
|
1788 |
|
1789 |
PCI_DPRINTF("%s: ROM id %04x%04x / PCI id %04x%04x\n", pdev->romfile,
|
1790 |
vendor_id, device_id, rom_vendor_id, rom_device_id); |
1791 |
|
1792 |
checksum = ptr[6];
|
1793 |
|
1794 |
if (vendor_id != rom_vendor_id) {
|
1795 |
/* Patch vendor id and checksum (at offset 6 for etherboot roms). */
|
1796 |
checksum += (uint8_t)rom_vendor_id + (uint8_t)(rom_vendor_id >> 8);
|
1797 |
checksum -= (uint8_t)vendor_id + (uint8_t)(vendor_id >> 8);
|
1798 |
PCI_DPRINTF("ROM checksum %02x / %02x\n", ptr[6], checksum); |
1799 |
ptr[6] = checksum;
|
1800 |
pci_set_word(ptr + pcir_offset + 4, vendor_id);
|
1801 |
} |
1802 |
|
1803 |
if (device_id != rom_device_id) {
|
1804 |
/* Patch device id and checksum (at offset 6 for etherboot roms). */
|
1805 |
checksum += (uint8_t)rom_device_id + (uint8_t)(rom_device_id >> 8);
|
1806 |
checksum -= (uint8_t)device_id + (uint8_t)(device_id >> 8);
|
1807 |
PCI_DPRINTF("ROM checksum %02x / %02x\n", ptr[6], checksum); |
1808 |
ptr[6] = checksum;
|
1809 |
pci_set_word(ptr + pcir_offset + 6, device_id);
|
1810 |
} |
1811 |
} |
1812 |
|
1813 |
/* Add an option rom for the device */
|
1814 |
static int pci_add_option_rom(PCIDevice *pdev, bool is_default_rom) |
1815 |
{ |
1816 |
int size;
|
1817 |
char *path;
|
1818 |
void *ptr;
|
1819 |
char name[32]; |
1820 |
|
1821 |
if (!pdev->romfile)
|
1822 |
return 0; |
1823 |
if (strlen(pdev->romfile) == 0) |
1824 |
return 0; |
1825 |
|
1826 |
if (!pdev->rom_bar) {
|
1827 |
/*
|
1828 |
* Load rom via fw_cfg instead of creating a rom bar,
|
1829 |
* for 0.11 compatibility.
|
1830 |
*/
|
1831 |
int class = pci_get_word(pdev->config + PCI_CLASS_DEVICE);
|
1832 |
if (class == 0x0300) { |
1833 |
rom_add_vga(pdev->romfile); |
1834 |
} else {
|
1835 |
rom_add_option(pdev->romfile, -1);
|
1836 |
} |
1837 |
return 0; |
1838 |
} |
1839 |
|
1840 |
path = qemu_find_file(QEMU_FILE_TYPE_BIOS, pdev->romfile); |
1841 |
if (path == NULL) { |
1842 |
path = qemu_strdup(pdev->romfile); |
1843 |
} |
1844 |
|
1845 |
size = get_image_size(path); |
1846 |
if (size < 0) { |
1847 |
error_report("%s: failed to find romfile \"%s\"",
|
1848 |
__FUNCTION__, pdev->romfile); |
1849 |
return -1; |
1850 |
} |
1851 |
if (size & (size - 1)) { |
1852 |
size = 1 << qemu_fls(size);
|
1853 |
} |
1854 |
|
1855 |
if (pdev->qdev.info->vmsd)
|
1856 |
snprintf(name, sizeof(name), "%s.rom", pdev->qdev.info->vmsd->name); |
1857 |
else
|
1858 |
snprintf(name, sizeof(name), "%s.rom", pdev->qdev.info->name); |
1859 |
pdev->rom_offset = qemu_ram_alloc(&pdev->qdev, name, size); |
1860 |
|
1861 |
ptr = qemu_get_ram_ptr(pdev->rom_offset); |
1862 |
load_image(path, ptr); |
1863 |
qemu_free(path); |
1864 |
|
1865 |
if (is_default_rom) {
|
1866 |
/* Only the default rom images will be patched (if needed). */
|
1867 |
pci_patch_ids(pdev, ptr, size); |
1868 |
} |
1869 |
|
1870 |
pci_register_bar(pdev, PCI_ROM_SLOT, size, |
1871 |
0, pci_map_option_rom);
|
1872 |
|
1873 |
return 0; |
1874 |
} |
1875 |
|
1876 |
static void pci_del_option_rom(PCIDevice *pdev) |
1877 |
{ |
1878 |
if (!pdev->rom_offset)
|
1879 |
return;
|
1880 |
|
1881 |
qemu_ram_free(pdev->rom_offset); |
1882 |
pdev->rom_offset = 0;
|
1883 |
} |
1884 |
|
1885 |
/*
|
1886 |
* if !offset
|
1887 |
* Reserve space and add capability to the linked list in pci config space
|
1888 |
*
|
1889 |
* if offset = 0,
|
1890 |
* Find and reserve space and add capability to the linked list
|
1891 |
* in pci config space */
|
1892 |
int pci_add_capability(PCIDevice *pdev, uint8_t cap_id,
|
1893 |
uint8_t offset, uint8_t size) |
1894 |
{ |
1895 |
uint8_t *config; |
1896 |
if (!offset) {
|
1897 |
offset = pci_find_space(pdev, size); |
1898 |
if (!offset) {
|
1899 |
return -ENOSPC;
|
1900 |
} |
1901 |
} |
1902 |
|
1903 |
config = pdev->config + offset; |
1904 |
config[PCI_CAP_LIST_ID] = cap_id; |
1905 |
config[PCI_CAP_LIST_NEXT] = pdev->config[PCI_CAPABILITY_LIST]; |
1906 |
pdev->config[PCI_CAPABILITY_LIST] = offset; |
1907 |
pdev->config[PCI_STATUS] |= PCI_STATUS_CAP_LIST; |
1908 |
memset(pdev->used + offset, 0xFF, size);
|
1909 |
/* Make capability read-only by default */
|
1910 |
memset(pdev->wmask + offset, 0, size);
|
1911 |
/* Check capability by default */
|
1912 |
memset(pdev->cmask + offset, 0xFF, size);
|
1913 |
return offset;
|
1914 |
} |
1915 |
|
1916 |
/* Unlink capability from the pci config space. */
|
1917 |
void pci_del_capability(PCIDevice *pdev, uint8_t cap_id, uint8_t size)
|
1918 |
{ |
1919 |
uint8_t prev, offset = pci_find_capability_list(pdev, cap_id, &prev); |
1920 |
if (!offset)
|
1921 |
return;
|
1922 |
pdev->config[prev] = pdev->config[offset + PCI_CAP_LIST_NEXT]; |
1923 |
/* Make capability writeable again */
|
1924 |
memset(pdev->wmask + offset, 0xff, size);
|
1925 |
memset(pdev->w1cmask + offset, 0, size);
|
1926 |
/* Clear cmask as device-specific registers can't be checked */
|
1927 |
memset(pdev->cmask + offset, 0, size);
|
1928 |
memset(pdev->used + offset, 0, size);
|
1929 |
|
1930 |
if (!pdev->config[PCI_CAPABILITY_LIST])
|
1931 |
pdev->config[PCI_STATUS] &= ~PCI_STATUS_CAP_LIST; |
1932 |
} |
1933 |
|
1934 |
/* Reserve space for capability at a known offset (to call after load). */
|
1935 |
void pci_reserve_capability(PCIDevice *pdev, uint8_t offset, uint8_t size)
|
1936 |
{ |
1937 |
memset(pdev->used + offset, 0xff, size);
|
1938 |
} |
1939 |
|
1940 |
uint8_t pci_find_capability(PCIDevice *pdev, uint8_t cap_id) |
1941 |
{ |
1942 |
return pci_find_capability_list(pdev, cap_id, NULL); |
1943 |
} |
1944 |
|
1945 |
static void pcibus_dev_print(Monitor *mon, DeviceState *dev, int indent) |
1946 |
{ |
1947 |
PCIDevice *d = (PCIDevice *)dev; |
1948 |
const pci_class_desc *desc;
|
1949 |
char ctxt[64]; |
1950 |
PCIIORegion *r; |
1951 |
int i, class;
|
1952 |
|
1953 |
class = pci_get_word(d->config + PCI_CLASS_DEVICE); |
1954 |
desc = pci_class_descriptions; |
1955 |
while (desc->desc && class != desc->class)
|
1956 |
desc++; |
1957 |
if (desc->desc) {
|
1958 |
snprintf(ctxt, sizeof(ctxt), "%s", desc->desc); |
1959 |
} else {
|
1960 |
snprintf(ctxt, sizeof(ctxt), "Class %04x", class); |
1961 |
} |
1962 |
|
1963 |
monitor_printf(mon, "%*sclass %s, addr %02x:%02x.%x, "
|
1964 |
"pci id %04x:%04x (sub %04x:%04x)\n",
|
1965 |
indent, "", ctxt, pci_bus_num(d->bus),
|
1966 |
PCI_SLOT(d->devfn), PCI_FUNC(d->devfn), |
1967 |
pci_get_word(d->config + PCI_VENDOR_ID), |
1968 |
pci_get_word(d->config + PCI_DEVICE_ID), |
1969 |
pci_get_word(d->config + PCI_SUBSYSTEM_VENDOR_ID), |
1970 |
pci_get_word(d->config + PCI_SUBSYSTEM_ID)); |
1971 |
for (i = 0; i < PCI_NUM_REGIONS; i++) { |
1972 |
r = &d->io_regions[i]; |
1973 |
if (!r->size)
|
1974 |
continue;
|
1975 |
monitor_printf(mon, "%*sbar %d: %s at 0x%"FMT_PCIBUS
|
1976 |
" [0x%"FMT_PCIBUS"]\n", |
1977 |
indent, "",
|
1978 |
i, r->type & PCI_BASE_ADDRESS_SPACE_IO ? "i/o" : "mem", |
1979 |
r->addr, r->addr + r->size - 1);
|
1980 |
} |
1981 |
} |
1982 |
|
1983 |
static char *pci_dev_fw_name(DeviceState *dev, char *buf, int len) |
1984 |
{ |
1985 |
PCIDevice *d = (PCIDevice *)dev; |
1986 |
const char *name = NULL; |
1987 |
const pci_class_desc *desc = pci_class_descriptions;
|
1988 |
int class = pci_get_word(d->config + PCI_CLASS_DEVICE);
|
1989 |
|
1990 |
while (desc->desc &&
|
1991 |
(class & ~desc->fw_ign_bits) != |
1992 |
(desc->class & ~desc->fw_ign_bits)) { |
1993 |
desc++; |
1994 |
} |
1995 |
|
1996 |
if (desc->desc) {
|
1997 |
name = desc->fw_name; |
1998 |
} |
1999 |
|
2000 |
if (name) {
|
2001 |
pstrcpy(buf, len, name); |
2002 |
} else {
|
2003 |
snprintf(buf, len, "pci%04x,%04x",
|
2004 |
pci_get_word(d->config + PCI_VENDOR_ID), |
2005 |
pci_get_word(d->config + PCI_DEVICE_ID)); |
2006 |
} |
2007 |
|
2008 |
return buf;
|
2009 |
} |
2010 |
|
2011 |
static char *pcibus_get_fw_dev_path(DeviceState *dev) |
2012 |
{ |
2013 |
PCIDevice *d = (PCIDevice *)dev; |
2014 |
char path[50], name[33]; |
2015 |
int off;
|
2016 |
|
2017 |
off = snprintf(path, sizeof(path), "%s@%x", |
2018 |
pci_dev_fw_name(dev, name, sizeof name),
|
2019 |
PCI_SLOT(d->devfn)); |
2020 |
if (PCI_FUNC(d->devfn))
|
2021 |
snprintf(path + off, sizeof(path) + off, ",%x", PCI_FUNC(d->devfn)); |
2022 |
return strdup(path);
|
2023 |
} |
2024 |
|
2025 |
static char *pcibus_get_dev_path(DeviceState *dev) |
2026 |
{ |
2027 |
PCIDevice *d = container_of(dev, PCIDevice, qdev); |
2028 |
PCIDevice *t; |
2029 |
int slot_depth;
|
2030 |
/* Path format: Domain:00:Slot.Function:Slot.Function....:Slot.Function.
|
2031 |
* 00 is added here to make this format compatible with
|
2032 |
* domain:Bus:Slot.Func for systems without nested PCI bridges.
|
2033 |
* Slot.Function list specifies the slot and function numbers for all
|
2034 |
* devices on the path from root to the specific device. */
|
2035 |
char domain[] = "DDDD:00"; |
2036 |
char slot[] = ":SS.F"; |
2037 |
int domain_len = sizeof domain - 1 /* For '\0' */; |
2038 |
int slot_len = sizeof slot - 1 /* For '\0' */; |
2039 |
int path_len;
|
2040 |
char *path, *p;
|
2041 |
int s;
|
2042 |
|
2043 |
/* Calculate # of slots on path between device and root. */;
|
2044 |
slot_depth = 0;
|
2045 |
for (t = d; t; t = t->bus->parent_dev) {
|
2046 |
++slot_depth; |
2047 |
} |
2048 |
|
2049 |
path_len = domain_len + slot_len * slot_depth; |
2050 |
|
2051 |
/* Allocate memory, fill in the terminating null byte. */
|
2052 |
path = malloc(path_len + 1 /* For '\0' */); |
2053 |
path[path_len] = '\0';
|
2054 |
|
2055 |
/* First field is the domain. */
|
2056 |
s = snprintf(domain, sizeof domain, "%04x:00", pci_find_domain(d->bus)); |
2057 |
assert(s == domain_len); |
2058 |
memcpy(path, domain, domain_len); |
2059 |
|
2060 |
/* Fill in slot numbers. We walk up from device to root, so need to print
|
2061 |
* them in the reverse order, last to first. */
|
2062 |
p = path + path_len; |
2063 |
for (t = d; t; t = t->bus->parent_dev) {
|
2064 |
p -= slot_len; |
2065 |
s = snprintf(slot, sizeof slot, ":%02x.%x", |
2066 |
PCI_SLOT(t->devfn), PCI_FUNC(d->devfn)); |
2067 |
assert(s == slot_len); |
2068 |
memcpy(p, slot, slot_len); |
2069 |
} |
2070 |
|
2071 |
return path;
|
2072 |
} |
2073 |
|
2074 |
static int pci_qdev_find_recursive(PCIBus *bus, |
2075 |
const char *id, PCIDevice **pdev) |
2076 |
{ |
2077 |
DeviceState *qdev = qdev_find_recursive(&bus->qbus, id); |
2078 |
if (!qdev) {
|
2079 |
return -ENODEV;
|
2080 |
} |
2081 |
|
2082 |
/* roughly check if given qdev is pci device */
|
2083 |
if (qdev->info->init == &pci_qdev_init &&
|
2084 |
qdev->parent_bus->info == &pci_bus_info) { |
2085 |
*pdev = DO_UPCAST(PCIDevice, qdev, qdev); |
2086 |
return 0; |
2087 |
} |
2088 |
return -EINVAL;
|
2089 |
} |
2090 |
|
2091 |
int pci_qdev_find_device(const char *id, PCIDevice **pdev) |
2092 |
{ |
2093 |
struct PCIHostBus *host;
|
2094 |
int rc = -ENODEV;
|
2095 |
|
2096 |
QLIST_FOREACH(host, &host_buses, next) { |
2097 |
int tmp = pci_qdev_find_recursive(host->bus, id, pdev);
|
2098 |
if (!tmp) {
|
2099 |
rc = 0;
|
2100 |
break;
|
2101 |
} |
2102 |
if (tmp != -ENODEV) {
|
2103 |
rc = tmp; |
2104 |
} |
2105 |
} |
2106 |
|
2107 |
return rc;
|
2108 |
} |