root / hw / pci.c @ cfb0a50a
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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_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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|
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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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|
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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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.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_END_OF_LIST() |
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} |
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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); |
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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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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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|
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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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/* 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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static void pci_device_reset(PCIDevice *dev) |
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{
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int r;
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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_set_word(dev->config + PCI_COMMAND, |
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pci_get_word(dev->config + PCI_COMMAND) & |
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~pci_get_word(dev->wmask + PCI_COMMAND)); |
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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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static void pci_bus_reset(void *opaque) |
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{
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PCIBus *bus = opaque; |
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int i;
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for (i = 0; i < bus->nirq; i++) { |
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bus->irq_count[i] = 0;
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} |
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for (i = 0; i < ARRAY_SIZE(bus->devices); ++i) { |
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if (bus->devices[i]) {
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pci_device_reset(bus->devices[i]); |
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} |
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} |
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} |
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static void pci_host_bus_register(int domain, PCIBus *bus) |
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{
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struct PCIHostBus *host;
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host = qemu_mallocz(sizeof(*host));
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host->domain = domain; |
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host->bus = bus; |
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QLIST_INSERT_HEAD(&host_buses, host, next); |
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} |
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PCIBus *pci_find_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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qemu_register_reset(pci_bus_reset, bus); |
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} |
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PCIBus *pci_bus_new(DeviceState *parent, const char *name, int devfn_min) |
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{
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PCIBus *bus; |
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bus = qemu_mallocz(sizeof(*bus));
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bus->qbus.qdev_allocated = 1;
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pci_bus_new_inplace(bus, parent, name, devfn_min); |
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return bus;
|
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} |
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|
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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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|
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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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|
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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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|
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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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|
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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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|
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static void pci_register_secondary_bus(PCIBus *parent, |
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PCIBus *bus, |
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PCIDevice *dev, |
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pci_map_irq_fn map_irq, |
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const char *name) |
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{
|
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qbus_create_inplace(&bus->qbus, &pci_bus_info, &dev->qdev, name); |
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bus->map_irq = map_irq; |
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bus->parent_dev = dev; |
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|
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QLIST_INIT(&bus->child); |
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QLIST_INSERT_HEAD(&parent->child, bus, sibling); |
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} |
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|
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static void pci_unregister_secondary_bus(PCIBus *bus) |
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{
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assert(QLIST_EMPTY(&bus->child)); |
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QLIST_REMOVE(bus, sibling); |
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} |
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|
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int pci_bus_num(PCIBus *s)
|
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{
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if (!s->parent_dev)
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return 0; /* pci host bridge */ |
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return s->parent_dev->config[PCI_SECONDARY_BUS];
|
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} |
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|
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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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|
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assert(size == pci_config_size(s)); |
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config = qemu_malloc(size); |
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|
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qemu_get_buffer(f, config, size); |
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for (i = 0; i < size; ++i) { |
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if ((config[i] ^ s->config[i]) & s->cmask[i] & ~s->wmask[i]) {
|
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qemu_free(config); |
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return -EINVAL;
|
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} |
| 317 |
} |
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memcpy(s->config, config, size); |
| 319 |
|
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pci_update_mappings(s); |
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|
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qemu_free(config); |
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return 0; |
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} |
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|
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/* just put buffer */
|
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static void put_pci_config_device(QEMUFile *f, void *pv, size_t size) |
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{
|
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const uint8_t **v = pv;
|
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assert(size == pci_config_size(container_of(pv, PCIDevice, config))); |
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qemu_put_buffer(f, *v, size); |
| 332 |
} |
| 333 |
|
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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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}; |
| 339 |
|
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static int get_pci_irq_state(QEMUFile *f, void *pv, size_t size) |
| 341 |
{
|
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PCIDevice *s = container_of(pv, PCIDevice, irq_state); |
| 343 |
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) { |
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irq_state[i] = qemu_get_be32(f); |
| 347 |
if (irq_state[i] != 0x1 && irq_state[i] != 0) { |
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fprintf(stderr, "irq state %d: must be 0 or 1.\n",
|
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irq_state[i]); |
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return -EINVAL;
|
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} |
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} |
| 353 |
|
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for (i = 0; i < PCI_NUM_PINS; ++i) { |
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pci_set_irq_state(s, i, irq_state[i]); |
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} |
| 357 |
|
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return 0; |
| 359 |
} |
| 360 |
|
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static void put_pci_irq_state(QEMUFile *f, void *pv, size_t size) |
| 362 |
{
|
| 363 |
int i;
|
| 364 |
PCIDevice *s = container_of(pv, PCIDevice, irq_state); |
| 365 |
|
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for (i = 0; i < PCI_NUM_PINS; ++i) { |
| 367 |
qemu_put_be32(f, pci_irq_state(s, i)); |
| 368 |
} |
| 369 |
} |
| 370 |
|
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static VMStateInfo vmstate_info_pci_irq_state = {
|
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.name = "pci irq state",
|
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.get = get_pci_irq_state, |
| 374 |
.put = put_pci_irq_state, |
| 375 |
}; |
| 376 |
|
| 377 |
const VMStateDescription vmstate_pci_device = {
|
| 378 |
.name = "PCIDevice",
|
| 379 |
.version_id = 2,
|
| 380 |
.minimum_version_id = 1,
|
| 381 |
.minimum_version_id_old = 1,
|
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.fields = (VMStateField []) {
|
| 383 |
VMSTATE_INT32_LE(version_id, PCIDevice), |
| 384 |
VMSTATE_BUFFER_UNSAFE_INFO(config, PCIDevice, 0,
|
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vmstate_info_pci_config, |
| 386 |
PCI_CONFIG_SPACE_SIZE), |
| 387 |
VMSTATE_BUFFER_UNSAFE_INFO(irq_state, PCIDevice, 2,
|
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vmstate_info_pci_irq_state, |
| 389 |
PCI_NUM_PINS * sizeof(int32_t)),
|
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VMSTATE_END_OF_LIST() |
| 391 |
} |
| 392 |
}; |
| 393 |
|
| 394 |
const VMStateDescription vmstate_pcie_device = {
|
| 395 |
.name = "PCIDevice",
|
| 396 |
.version_id = 2,
|
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.minimum_version_id = 1,
|
| 398 |
.minimum_version_id_old = 1,
|
| 399 |
.fields = (VMStateField []) {
|
| 400 |
VMSTATE_INT32_LE(version_id, PCIDevice), |
| 401 |
VMSTATE_BUFFER_UNSAFE_INFO(config, PCIDevice, 0,
|
| 402 |
vmstate_info_pci_config, |
| 403 |
PCIE_CONFIG_SPACE_SIZE), |
| 404 |
VMSTATE_BUFFER_UNSAFE_INFO(irq_state, PCIDevice, 2,
|
| 405 |
vmstate_info_pci_irq_state, |
| 406 |
PCI_NUM_PINS * sizeof(int32_t)),
|
| 407 |
VMSTATE_END_OF_LIST() |
| 408 |
} |
| 409 |
}; |
| 410 |
|
| 411 |
static inline const VMStateDescription *pci_get_vmstate(PCIDevice *s) |
| 412 |
{
|
| 413 |
return pci_is_express(s) ? &vmstate_pcie_device : &vmstate_pci_device;
|
| 414 |
} |
| 415 |
|
| 416 |
void pci_device_save(PCIDevice *s, QEMUFile *f)
|
| 417 |
{
|
| 418 |
/* Clear interrupt status bit: it is implicit
|
| 419 |
* in irq_state which we are saving.
|
| 420 |
* This makes us compatible with old devices
|
| 421 |
* which never set or clear this bit. */
|
| 422 |
s->config[PCI_STATUS] &= ~PCI_STATUS_INTERRUPT; |
| 423 |
vmstate_save_state(f, pci_get_vmstate(s), s); |
| 424 |
/* Restore the interrupt status bit. */
|
| 425 |
pci_update_irq_status(s); |
| 426 |
} |
| 427 |
|
| 428 |
int pci_device_load(PCIDevice *s, QEMUFile *f)
|
| 429 |
{
|
| 430 |
int ret;
|
| 431 |
ret = vmstate_load_state(f, pci_get_vmstate(s), s, s->version_id); |
| 432 |
/* Restore the interrupt status bit. */
|
| 433 |
pci_update_irq_status(s); |
| 434 |
return ret;
|
| 435 |
} |
| 436 |
|
| 437 |
static void pci_set_default_subsystem_id(PCIDevice *pci_dev) |
| 438 |
{
|
| 439 |
pci_set_word(pci_dev->config + PCI_SUBSYSTEM_VENDOR_ID, |
| 440 |
pci_default_sub_vendor_id); |
| 441 |
pci_set_word(pci_dev->config + PCI_SUBSYSTEM_ID, |
| 442 |
pci_default_sub_device_id); |
| 443 |
} |
| 444 |
|
| 445 |
/*
|
| 446 |
* Parse [[<domain>:]<bus>:]<slot>, return -1 on error
|
| 447 |
*/
|
| 448 |
static int pci_parse_devaddr(const char *addr, int *domp, int *busp, unsigned *slotp) |
| 449 |
{
|
| 450 |
const char *p; |
| 451 |
char *e;
|
| 452 |
unsigned long val; |
| 453 |
unsigned long dom = 0, bus = 0; |
| 454 |
unsigned slot = 0; |
| 455 |
|
| 456 |
p = addr; |
| 457 |
val = strtoul(p, &e, 16);
|
| 458 |
if (e == p)
|
| 459 |
return -1; |
| 460 |
if (*e == ':') { |
| 461 |
bus = val; |
| 462 |
p = e + 1;
|
| 463 |
val = strtoul(p, &e, 16);
|
| 464 |
if (e == p)
|
| 465 |
return -1; |
| 466 |
if (*e == ':') { |
| 467 |
dom = bus; |
| 468 |
bus = val; |
| 469 |
p = e + 1;
|
| 470 |
val = strtoul(p, &e, 16);
|
| 471 |
if (e == p)
|
| 472 |
return -1; |
| 473 |
} |
| 474 |
} |
| 475 |
|
| 476 |
if (dom > 0xffff || bus > 0xff || val > 0x1f) |
| 477 |
return -1; |
| 478 |
|
| 479 |
slot = val; |
| 480 |
|
| 481 |
if (*e)
|
| 482 |
return -1; |
| 483 |
|
| 484 |
/* Note: QEMU doesn't implement domains other than 0 */
|
| 485 |
if (!pci_find_bus(pci_find_root_bus(dom), bus))
|
| 486 |
return -1; |
| 487 |
|
| 488 |
*domp = dom; |
| 489 |
*busp = bus; |
| 490 |
*slotp = slot; |
| 491 |
return 0; |
| 492 |
} |
| 493 |
|
| 494 |
int pci_read_devaddr(Monitor *mon, const char *addr, int *domp, int *busp, |
| 495 |
unsigned *slotp)
|
| 496 |
{
|
| 497 |
/* strip legacy tag */
|
| 498 |
if (!strncmp(addr, "pci_addr=", 9)) { |
| 499 |
addr += 9;
|
| 500 |
} |
| 501 |
if (pci_parse_devaddr(addr, domp, busp, slotp)) {
|
| 502 |
monitor_printf(mon, "Invalid pci address\n");
|
| 503 |
return -1; |
| 504 |
} |
| 505 |
return 0; |
| 506 |
} |
| 507 |
|
| 508 |
PCIBus *pci_get_bus_devfn(int *devfnp, const char *devaddr) |
| 509 |
{
|
| 510 |
int dom, bus;
|
| 511 |
unsigned slot;
|
| 512 |
|
| 513 |
if (!devaddr) {
|
| 514 |
*devfnp = -1;
|
| 515 |
return pci_find_bus(pci_find_root_bus(0), 0); |
| 516 |
} |
| 517 |
|
| 518 |
if (pci_parse_devaddr(devaddr, &dom, &bus, &slot) < 0) { |
| 519 |
return NULL; |
| 520 |
} |
| 521 |
|
| 522 |
*devfnp = slot << 3;
|
| 523 |
return pci_find_bus(pci_find_root_bus(dom), bus);
|
| 524 |
} |
| 525 |
|
| 526 |
static void pci_init_cmask(PCIDevice *dev) |
| 527 |
{
|
| 528 |
pci_set_word(dev->cmask + PCI_VENDOR_ID, 0xffff);
|
| 529 |
pci_set_word(dev->cmask + PCI_DEVICE_ID, 0xffff);
|
| 530 |
dev->cmask[PCI_STATUS] = PCI_STATUS_CAP_LIST; |
| 531 |
dev->cmask[PCI_REVISION_ID] = 0xff;
|
| 532 |
dev->cmask[PCI_CLASS_PROG] = 0xff;
|
| 533 |
pci_set_word(dev->cmask + PCI_CLASS_DEVICE, 0xffff);
|
| 534 |
dev->cmask[PCI_HEADER_TYPE] = 0xff;
|
| 535 |
dev->cmask[PCI_CAPABILITY_LIST] = 0xff;
|
| 536 |
} |
| 537 |
|
| 538 |
static void pci_init_wmask(PCIDevice *dev) |
| 539 |
{
|
| 540 |
int config_size = pci_config_size(dev);
|
| 541 |
|
| 542 |
dev->wmask[PCI_CACHE_LINE_SIZE] = 0xff;
|
| 543 |
dev->wmask[PCI_INTERRUPT_LINE] = 0xff;
|
| 544 |
pci_set_word(dev->wmask + PCI_COMMAND, |
| 545 |
PCI_COMMAND_IO | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER | |
| 546 |
PCI_COMMAND_INTX_DISABLE); |
| 547 |
|
| 548 |
memset(dev->wmask + PCI_CONFIG_HEADER_SIZE, 0xff,
|
| 549 |
config_size - PCI_CONFIG_HEADER_SIZE); |
| 550 |
} |
| 551 |
|
| 552 |
static void pci_init_wmask_bridge(PCIDevice *d) |
| 553 |
{
|
| 554 |
/* PCI_PRIMARY_BUS, PCI_SECONDARY_BUS, PCI_SUBORDINATE_BUS and
|
| 555 |
PCI_SEC_LETENCY_TIMER */
|
| 556 |
memset(d->wmask + PCI_PRIMARY_BUS, 0xff, 4); |
| 557 |
|
| 558 |
/* base and limit */
|
| 559 |
d->wmask[PCI_IO_BASE] = PCI_IO_RANGE_MASK & 0xff;
|
| 560 |
d->wmask[PCI_IO_LIMIT] = PCI_IO_RANGE_MASK & 0xff;
|
| 561 |
pci_set_word(d->wmask + PCI_MEMORY_BASE, |
| 562 |
PCI_MEMORY_RANGE_MASK & 0xffff);
|
| 563 |
pci_set_word(d->wmask + PCI_MEMORY_LIMIT, |
| 564 |
PCI_MEMORY_RANGE_MASK & 0xffff);
|
| 565 |
pci_set_word(d->wmask + PCI_PREF_MEMORY_BASE, |
| 566 |
PCI_PREF_RANGE_MASK & 0xffff);
|
| 567 |
pci_set_word(d->wmask + PCI_PREF_MEMORY_LIMIT, |
| 568 |
PCI_PREF_RANGE_MASK & 0xffff);
|
| 569 |
|
| 570 |
/* PCI_PREF_BASE_UPPER32 and PCI_PREF_LIMIT_UPPER32 */
|
| 571 |
memset(d->wmask + PCI_PREF_BASE_UPPER32, 0xff, 8); |
| 572 |
|
| 573 |
pci_set_word(d->wmask + PCI_BRIDGE_CONTROL, 0xffff);
|
| 574 |
} |
| 575 |
|
| 576 |
static int pci_init_multifunction(PCIBus *bus, PCIDevice *dev) |
| 577 |
{
|
| 578 |
uint8_t slot = PCI_SLOT(dev->devfn); |
| 579 |
uint8_t func; |
| 580 |
|
| 581 |
if (dev->cap_present & QEMU_PCI_CAP_MULTIFUNCTION) {
|
| 582 |
dev->config[PCI_HEADER_TYPE] |= PCI_HEADER_TYPE_MULTI_FUNCTION; |
| 583 |
} |
| 584 |
|
| 585 |
/*
|
| 586 |
* multifuction bit is interpreted in two ways as follows.
|
| 587 |
* - all functions must set the bit to 1.
|
| 588 |
* Example: Intel X53
|
| 589 |
* - function 0 must set the bit, but the rest function (> 0)
|
| 590 |
* is allowed to leave the bit to 0.
|
| 591 |
* Example: PIIX3(also in qemu), PIIX4(also in qemu), ICH10,
|
| 592 |
*
|
| 593 |
* So OS (at least Linux) checks the bit of only function 0,
|
| 594 |
* and doesn't see the bit of function > 0.
|
| 595 |
*
|
| 596 |
* The below check allows both interpretation.
|
| 597 |
*/
|
| 598 |
if (PCI_FUNC(dev->devfn)) {
|
| 599 |
PCIDevice *f0 = bus->devices[PCI_DEVFN(slot, 0)];
|
| 600 |
if (f0 && !(f0->cap_present & QEMU_PCI_CAP_MULTIFUNCTION)) {
|
| 601 |
/* function 0 should set multifunction bit */
|
| 602 |
error_report("PCI: single function device can't be populated "
|
| 603 |
"in function %x.%x", slot, PCI_FUNC(dev->devfn));
|
| 604 |
return -1; |
| 605 |
} |
| 606 |
return 0; |
| 607 |
} |
| 608 |
|
| 609 |
if (dev->cap_present & QEMU_PCI_CAP_MULTIFUNCTION) {
|
| 610 |
return 0; |
| 611 |
} |
| 612 |
/* function 0 indicates single function, so function > 0 must be NULL */
|
| 613 |
for (func = 1; func < PCI_FUNC_MAX; ++func) { |
| 614 |
if (bus->devices[PCI_DEVFN(slot, func)]) {
|
| 615 |
error_report("PCI: %x.0 indicates single function, "
|
| 616 |
"but %x.%x is already populated.",
|
| 617 |
slot, slot, func); |
| 618 |
return -1; |
| 619 |
} |
| 620 |
} |
| 621 |
return 0; |
| 622 |
} |
| 623 |
|
| 624 |
static void pci_config_alloc(PCIDevice *pci_dev) |
| 625 |
{
|
| 626 |
int config_size = pci_config_size(pci_dev);
|
| 627 |
|
| 628 |
pci_dev->config = qemu_mallocz(config_size); |
| 629 |
pci_dev->cmask = qemu_mallocz(config_size); |
| 630 |
pci_dev->wmask = qemu_mallocz(config_size); |
| 631 |
pci_dev->used = qemu_mallocz(config_size); |
| 632 |
} |
| 633 |
|
| 634 |
static void pci_config_free(PCIDevice *pci_dev) |
| 635 |
{
|
| 636 |
qemu_free(pci_dev->config); |
| 637 |
qemu_free(pci_dev->cmask); |
| 638 |
qemu_free(pci_dev->wmask); |
| 639 |
qemu_free(pci_dev->used); |
| 640 |
} |
| 641 |
|
| 642 |
/* -1 for devfn means auto assign */
|
| 643 |
static PCIDevice *do_pci_register_device(PCIDevice *pci_dev, PCIBus *bus,
|
| 644 |
const char *name, int devfn, |
| 645 |
PCIConfigReadFunc *config_read, |
| 646 |
PCIConfigWriteFunc *config_write, |
| 647 |
bool is_bridge)
|
| 648 |
{
|
| 649 |
if (devfn < 0) { |
| 650 |
for(devfn = bus->devfn_min ; devfn < ARRAY_SIZE(bus->devices);
|
| 651 |
devfn += PCI_FUNC_MAX) {
|
| 652 |
if (!bus->devices[devfn])
|
| 653 |
goto found;
|
| 654 |
} |
| 655 |
error_report("PCI: no slot/function available for %s, all in use", name);
|
| 656 |
return NULL; |
| 657 |
found: ;
|
| 658 |
} else if (bus->devices[devfn]) { |
| 659 |
error_report("PCI: slot %d function %d not available for %s, in use by %s",
|
| 660 |
PCI_SLOT(devfn), PCI_FUNC(devfn), name, bus->devices[devfn]->name); |
| 661 |
return NULL; |
| 662 |
} |
| 663 |
pci_dev->bus = bus; |
| 664 |
pci_dev->devfn = devfn; |
| 665 |
pstrcpy(pci_dev->name, sizeof(pci_dev->name), name);
|
| 666 |
pci_dev->irq_state = 0;
|
| 667 |
pci_config_alloc(pci_dev); |
| 668 |
|
| 669 |
if (!is_bridge) {
|
| 670 |
pci_set_default_subsystem_id(pci_dev); |
| 671 |
} |
| 672 |
pci_init_cmask(pci_dev); |
| 673 |
pci_init_wmask(pci_dev); |
| 674 |
if (is_bridge) {
|
| 675 |
pci_init_wmask_bridge(pci_dev); |
| 676 |
} |
| 677 |
if (pci_init_multifunction(bus, pci_dev)) {
|
| 678 |
pci_config_free(pci_dev); |
| 679 |
return NULL; |
| 680 |
} |
| 681 |
|
| 682 |
if (!config_read)
|
| 683 |
config_read = pci_default_read_config; |
| 684 |
if (!config_write)
|
| 685 |
config_write = pci_default_write_config; |
| 686 |
pci_dev->config_read = config_read; |
| 687 |
pci_dev->config_write = config_write; |
| 688 |
bus->devices[devfn] = pci_dev; |
| 689 |
pci_dev->irq = qemu_allocate_irqs(pci_set_irq, pci_dev, PCI_NUM_PINS); |
| 690 |
pci_dev->version_id = 2; /* Current pci device vmstate version */ |
| 691 |
return pci_dev;
|
| 692 |
} |
| 693 |
|
| 694 |
static void do_pci_unregister_device(PCIDevice *pci_dev) |
| 695 |
{
|
| 696 |
qemu_free_irqs(pci_dev->irq); |
| 697 |
pci_dev->bus->devices[pci_dev->devfn] = NULL;
|
| 698 |
pci_config_free(pci_dev); |
| 699 |
} |
| 700 |
|
| 701 |
PCIDevice *pci_register_device(PCIBus *bus, const char *name, |
| 702 |
int instance_size, int devfn, |
| 703 |
PCIConfigReadFunc *config_read, |
| 704 |
PCIConfigWriteFunc *config_write) |
| 705 |
{
|
| 706 |
PCIDevice *pci_dev; |
| 707 |
|
| 708 |
pci_dev = qemu_mallocz(instance_size); |
| 709 |
pci_dev = do_pci_register_device(pci_dev, bus, name, devfn, |
| 710 |
config_read, config_write, |
| 711 |
PCI_HEADER_TYPE_NORMAL); |
| 712 |
if (pci_dev == NULL) { |
| 713 |
hw_error("PCI: can't register device\n");
|
| 714 |
} |
| 715 |
return pci_dev;
|
| 716 |
} |
| 717 |
|
| 718 |
static target_phys_addr_t pci_to_cpu_addr(PCIBus *bus,
|
| 719 |
target_phys_addr_t addr) |
| 720 |
{
|
| 721 |
return addr + bus->mem_base;
|
| 722 |
} |
| 723 |
|
| 724 |
static void pci_unregister_io_regions(PCIDevice *pci_dev) |
| 725 |
{
|
| 726 |
PCIIORegion *r; |
| 727 |
int i;
|
| 728 |
|
| 729 |
for(i = 0; i < PCI_NUM_REGIONS; i++) { |
| 730 |
r = &pci_dev->io_regions[i]; |
| 731 |
if (!r->size || r->addr == PCI_BAR_UNMAPPED)
|
| 732 |
continue;
|
| 733 |
if (r->type == PCI_BASE_ADDRESS_SPACE_IO) {
|
| 734 |
isa_unassign_ioport(r->addr, r->filtered_size); |
| 735 |
} else {
|
| 736 |
cpu_register_physical_memory(pci_to_cpu_addr(pci_dev->bus, |
| 737 |
r->addr), |
| 738 |
r->filtered_size, |
| 739 |
IO_MEM_UNASSIGNED); |
| 740 |
} |
| 741 |
} |
| 742 |
} |
| 743 |
|
| 744 |
static int pci_unregister_device(DeviceState *dev) |
| 745 |
{
|
| 746 |
PCIDevice *pci_dev = DO_UPCAST(PCIDevice, qdev, dev); |
| 747 |
PCIDeviceInfo *info = DO_UPCAST(PCIDeviceInfo, qdev, dev->info); |
| 748 |
int ret = 0; |
| 749 |
|
| 750 |
if (info->exit)
|
| 751 |
ret = info->exit(pci_dev); |
| 752 |
if (ret)
|
| 753 |
return ret;
|
| 754 |
|
| 755 |
pci_unregister_io_regions(pci_dev); |
| 756 |
pci_del_option_rom(pci_dev); |
| 757 |
do_pci_unregister_device(pci_dev); |
| 758 |
return 0; |
| 759 |
} |
| 760 |
|
| 761 |
void pci_register_bar(PCIDevice *pci_dev, int region_num, |
| 762 |
pcibus_t size, int type,
|
| 763 |
PCIMapIORegionFunc *map_func) |
| 764 |
{
|
| 765 |
PCIIORegion *r; |
| 766 |
uint32_t addr; |
| 767 |
pcibus_t wmask; |
| 768 |
|
| 769 |
if ((unsigned int)region_num >= PCI_NUM_REGIONS) |
| 770 |
return;
|
| 771 |
|
| 772 |
if (size & (size-1)) { |
| 773 |
fprintf(stderr, "ERROR: PCI region size must be pow2 "
|
| 774 |
"type=0x%x, size=0x%"FMT_PCIBUS"\n", type, size); |
| 775 |
exit(1);
|
| 776 |
} |
| 777 |
|
| 778 |
r = &pci_dev->io_regions[region_num]; |
| 779 |
r->addr = PCI_BAR_UNMAPPED; |
| 780 |
r->size = size; |
| 781 |
r->filtered_size = size; |
| 782 |
r->type = type; |
| 783 |
r->map_func = map_func; |
| 784 |
|
| 785 |
wmask = ~(size - 1);
|
| 786 |
addr = pci_bar(pci_dev, region_num); |
| 787 |
if (region_num == PCI_ROM_SLOT) {
|
| 788 |
/* ROM enable bit is writeable */
|
| 789 |
wmask |= PCI_ROM_ADDRESS_ENABLE; |
| 790 |
} |
| 791 |
pci_set_long(pci_dev->config + addr, type); |
| 792 |
if (!(r->type & PCI_BASE_ADDRESS_SPACE_IO) &&
|
| 793 |
r->type & PCI_BASE_ADDRESS_MEM_TYPE_64) {
|
| 794 |
pci_set_quad(pci_dev->wmask + addr, wmask); |
| 795 |
pci_set_quad(pci_dev->cmask + addr, ~0ULL);
|
| 796 |
} else {
|
| 797 |
pci_set_long(pci_dev->wmask + addr, wmask & 0xffffffff);
|
| 798 |
pci_set_long(pci_dev->cmask + addr, 0xffffffff);
|
| 799 |
} |
| 800 |
} |
| 801 |
|
| 802 |
static uint32_t pci_config_get_io_base(PCIDevice *d,
|
| 803 |
uint32_t base, uint32_t base_upper16) |
| 804 |
{
|
| 805 |
uint32_t val; |
| 806 |
|
| 807 |
val = ((uint32_t)d->config[base] & PCI_IO_RANGE_MASK) << 8;
|
| 808 |
if (d->config[base] & PCI_IO_RANGE_TYPE_32) {
|
| 809 |
val |= (uint32_t)pci_get_word(d->config + base_upper16) << 16;
|
| 810 |
} |
| 811 |
return val;
|
| 812 |
} |
| 813 |
|
| 814 |
static pcibus_t pci_config_get_memory_base(PCIDevice *d, uint32_t base)
|
| 815 |
{
|
| 816 |
return ((pcibus_t)pci_get_word(d->config + base) & PCI_MEMORY_RANGE_MASK)
|
| 817 |
<< 16;
|
| 818 |
} |
| 819 |
|
| 820 |
static pcibus_t pci_config_get_pref_base(PCIDevice *d,
|
| 821 |
uint32_t base, uint32_t upper) |
| 822 |
{
|
| 823 |
pcibus_t tmp; |
| 824 |
pcibus_t val; |
| 825 |
|
| 826 |
tmp = (pcibus_t)pci_get_word(d->config + base); |
| 827 |
val = (tmp & PCI_PREF_RANGE_MASK) << 16;
|
| 828 |
if (tmp & PCI_PREF_RANGE_TYPE_64) {
|
| 829 |
val |= (pcibus_t)pci_get_long(d->config + upper) << 32;
|
| 830 |
} |
| 831 |
return val;
|
| 832 |
} |
| 833 |
|
| 834 |
static pcibus_t pci_bridge_get_base(PCIDevice *bridge, uint8_t type)
|
| 835 |
{
|
| 836 |
pcibus_t base; |
| 837 |
if (type & PCI_BASE_ADDRESS_SPACE_IO) {
|
| 838 |
base = pci_config_get_io_base(bridge, |
| 839 |
PCI_IO_BASE, PCI_IO_BASE_UPPER16); |
| 840 |
} else {
|
| 841 |
if (type & PCI_BASE_ADDRESS_MEM_PREFETCH) {
|
| 842 |
base = pci_config_get_pref_base( |
| 843 |
bridge, PCI_PREF_MEMORY_BASE, PCI_PREF_BASE_UPPER32); |
| 844 |
} else {
|
| 845 |
base = pci_config_get_memory_base(bridge, PCI_MEMORY_BASE); |
| 846 |
} |
| 847 |
} |
| 848 |
|
| 849 |
return base;
|
| 850 |
} |
| 851 |
|
| 852 |
static pcibus_t pci_bridge_get_limit(PCIDevice *bridge, uint8_t type)
|
| 853 |
{
|
| 854 |
pcibus_t limit; |
| 855 |
if (type & PCI_BASE_ADDRESS_SPACE_IO) {
|
| 856 |
limit = pci_config_get_io_base(bridge, |
| 857 |
PCI_IO_LIMIT, PCI_IO_LIMIT_UPPER16); |
| 858 |
limit |= 0xfff; /* PCI bridge spec 3.2.5.6. */ |
| 859 |
} else {
|
| 860 |
if (type & PCI_BASE_ADDRESS_MEM_PREFETCH) {
|
| 861 |
limit = pci_config_get_pref_base( |
| 862 |
bridge, PCI_PREF_MEMORY_LIMIT, PCI_PREF_LIMIT_UPPER32); |
| 863 |
} else {
|
| 864 |
limit = pci_config_get_memory_base(bridge, PCI_MEMORY_LIMIT); |
| 865 |
} |
| 866 |
limit |= 0xfffff; /* PCI bridge spec 3.2.5.{1, 8}. */ |
| 867 |
} |
| 868 |
return limit;
|
| 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 |
d->config[addr + i] = (d->config[addr + i] & ~wmask) | (val & wmask); |
| 1072 |
} |
| 1073 |
if (ranges_overlap(addr, l, PCI_BASE_ADDRESS_0, 24) || |
| 1074 |
ranges_overlap(addr, l, PCI_ROM_ADDRESS, 4) ||
|
| 1075 |
ranges_overlap(addr, l, PCI_ROM_ADDRESS1, 4) ||
|
| 1076 |
range_covers_byte(addr, l, PCI_COMMAND)) |
| 1077 |
pci_update_mappings(d); |
| 1078 |
|
| 1079 |
if (range_covers_byte(addr, l, PCI_COMMAND))
|
| 1080 |
pci_update_irq_disabled(d, was_irq_disabled); |
| 1081 |
} |
| 1082 |
|
| 1083 |
/***********************************************************/
|
| 1084 |
/* generic PCI irq support */
|
| 1085 |
|
| 1086 |
/* 0 <= irq_num <= 3. level must be 0 or 1 */
|
| 1087 |
static void pci_set_irq(void *opaque, int irq_num, int level) |
| 1088 |
{
|
| 1089 |
PCIDevice *pci_dev = opaque; |
| 1090 |
int change;
|
| 1091 |
|
| 1092 |
change = level - pci_irq_state(pci_dev, irq_num); |
| 1093 |
if (!change)
|
| 1094 |
return;
|
| 1095 |
|
| 1096 |
pci_set_irq_state(pci_dev, irq_num, level); |
| 1097 |
pci_update_irq_status(pci_dev); |
| 1098 |
if (pci_irq_disabled(pci_dev))
|
| 1099 |
return;
|
| 1100 |
pci_change_irq_level(pci_dev, irq_num, change); |
| 1101 |
} |
| 1102 |
|
| 1103 |
/***********************************************************/
|
| 1104 |
/* monitor info on PCI */
|
| 1105 |
|
| 1106 |
typedef struct { |
| 1107 |
uint16_t class; |
| 1108 |
const char *desc; |
| 1109 |
} pci_class_desc; |
| 1110 |
|
| 1111 |
static const pci_class_desc pci_class_descriptions[] = |
| 1112 |
{
|
| 1113 |
{ 0x0100, "SCSI controller"},
|
| 1114 |
{ 0x0101, "IDE controller"},
|
| 1115 |
{ 0x0102, "Floppy controller"},
|
| 1116 |
{ 0x0103, "IPI controller"},
|
| 1117 |
{ 0x0104, "RAID controller"},
|
| 1118 |
{ 0x0106, "SATA controller"},
|
| 1119 |
{ 0x0107, "SAS controller"},
|
| 1120 |
{ 0x0180, "Storage controller"},
|
| 1121 |
{ 0x0200, "Ethernet controller"},
|
| 1122 |
{ 0x0201, "Token Ring controller"},
|
| 1123 |
{ 0x0202, "FDDI controller"},
|
| 1124 |
{ 0x0203, "ATM controller"},
|
| 1125 |
{ 0x0280, "Network controller"},
|
| 1126 |
{ 0x0300, "VGA controller"},
|
| 1127 |
{ 0x0301, "XGA controller"},
|
| 1128 |
{ 0x0302, "3D controller"},
|
| 1129 |
{ 0x0380, "Display controller"},
|
| 1130 |
{ 0x0400, "Video controller"},
|
| 1131 |
{ 0x0401, "Audio controller"},
|
| 1132 |
{ 0x0402, "Phone"},
|
| 1133 |
{ 0x0480, "Multimedia controller"},
|
| 1134 |
{ 0x0500, "RAM controller"},
|
| 1135 |
{ 0x0501, "Flash controller"},
|
| 1136 |
{ 0x0580, "Memory controller"},
|
| 1137 |
{ 0x0600, "Host bridge"},
|
| 1138 |
{ 0x0601, "ISA bridge"},
|
| 1139 |
{ 0x0602, "EISA bridge"},
|
| 1140 |
{ 0x0603, "MC bridge"},
|
| 1141 |
{ 0x0604, "PCI bridge"},
|
| 1142 |
{ 0x0605, "PCMCIA bridge"},
|
| 1143 |
{ 0x0606, "NUBUS bridge"},
|
| 1144 |
{ 0x0607, "CARDBUS bridge"},
|
| 1145 |
{ 0x0608, "RACEWAY bridge"},
|
| 1146 |
{ 0x0680, "Bridge"},
|
| 1147 |
{ 0x0c03, "USB controller"},
|
| 1148 |
{ 0, NULL}
|
| 1149 |
}; |
| 1150 |
|
| 1151 |
static void pci_for_each_device_under_bus(PCIBus *bus, |
| 1152 |
void (*fn)(PCIBus *b, PCIDevice *d))
|
| 1153 |
{
|
| 1154 |
PCIDevice *d; |
| 1155 |
int devfn;
|
| 1156 |
|
| 1157 |
for(devfn = 0; devfn < ARRAY_SIZE(bus->devices); devfn++) { |
| 1158 |
d = bus->devices[devfn]; |
| 1159 |
if (d) {
|
| 1160 |
fn(bus, d); |
| 1161 |
} |
| 1162 |
} |
| 1163 |
} |
| 1164 |
|
| 1165 |
void pci_for_each_device(PCIBus *bus, int bus_num, |
| 1166 |
void (*fn)(PCIBus *b, PCIDevice *d))
|
| 1167 |
{
|
| 1168 |
bus = pci_find_bus(bus, bus_num); |
| 1169 |
|
| 1170 |
if (bus) {
|
| 1171 |
pci_for_each_device_under_bus(bus, fn); |
| 1172 |
} |
| 1173 |
} |
| 1174 |
|
| 1175 |
static void pci_device_print(Monitor *mon, QDict *device) |
| 1176 |
{
|
| 1177 |
QDict *qdict; |
| 1178 |
QListEntry *entry; |
| 1179 |
uint64_t addr, size; |
| 1180 |
|
| 1181 |
monitor_printf(mon, " Bus %2" PRId64 ", ", qdict_get_int(device, "bus")); |
| 1182 |
monitor_printf(mon, "device %3" PRId64 ", function %" PRId64 ":\n", |
| 1183 |
qdict_get_int(device, "slot"),
|
| 1184 |
qdict_get_int(device, "function"));
|
| 1185 |
monitor_printf(mon, " ");
|
| 1186 |
|
| 1187 |
qdict = qdict_get_qdict(device, "class_info");
|
| 1188 |
if (qdict_haskey(qdict, "desc")) { |
| 1189 |
monitor_printf(mon, "%s", qdict_get_str(qdict, "desc")); |
| 1190 |
} else {
|
| 1191 |
monitor_printf(mon, "Class %04" PRId64, qdict_get_int(qdict, "class")); |
| 1192 |
} |
| 1193 |
|
| 1194 |
qdict = qdict_get_qdict(device, "id");
|
| 1195 |
monitor_printf(mon, ": PCI device %04" PRIx64 ":%04" PRIx64 "\n", |
| 1196 |
qdict_get_int(qdict, "device"),
|
| 1197 |
qdict_get_int(qdict, "vendor"));
|
| 1198 |
|
| 1199 |
if (qdict_haskey(device, "irq")) { |
| 1200 |
monitor_printf(mon, " IRQ %" PRId64 ".\n", |
| 1201 |
qdict_get_int(device, "irq"));
|
| 1202 |
} |
| 1203 |
|
| 1204 |
if (qdict_haskey(device, "pci_bridge")) { |
| 1205 |
QDict *info; |
| 1206 |
|
| 1207 |
qdict = qdict_get_qdict(device, "pci_bridge");
|
| 1208 |
|
| 1209 |
info = qdict_get_qdict(qdict, "bus");
|
| 1210 |
monitor_printf(mon, " BUS %" PRId64 ".\n", |
| 1211 |
qdict_get_int(info, "number"));
|
| 1212 |
monitor_printf(mon, " secondary bus %" PRId64 ".\n", |
| 1213 |
qdict_get_int(info, "secondary"));
|
| 1214 |
monitor_printf(mon, " subordinate bus %" PRId64 ".\n", |
| 1215 |
qdict_get_int(info, "subordinate"));
|
| 1216 |
|
| 1217 |
info = qdict_get_qdict(qdict, "io_range");
|
| 1218 |
monitor_printf(mon, " IO range [0x%04"PRIx64", 0x%04"PRIx64"]\n", |
| 1219 |
qdict_get_int(info, "base"),
|
| 1220 |
qdict_get_int(info, "limit"));
|
| 1221 |
|
| 1222 |
info = qdict_get_qdict(qdict, "memory_range");
|
| 1223 |
monitor_printf(mon, |
| 1224 |
" memory range [0x%08"PRIx64", 0x%08"PRIx64"]\n", |
| 1225 |
qdict_get_int(info, "base"),
|
| 1226 |
qdict_get_int(info, "limit"));
|
| 1227 |
|
| 1228 |
info = qdict_get_qdict(qdict, "prefetchable_range");
|
| 1229 |
monitor_printf(mon, " prefetchable memory range "
|
| 1230 |
"[0x%08"PRIx64", 0x%08"PRIx64"]\n", |
| 1231 |
qdict_get_int(info, "base"),
|
| 1232 |
qdict_get_int(info, "limit"));
|
| 1233 |
} |
| 1234 |
|
| 1235 |
QLIST_FOREACH_ENTRY(qdict_get_qlist(device, "regions"), entry) {
|
| 1236 |
qdict = qobject_to_qdict(qlist_entry_obj(entry)); |
| 1237 |
monitor_printf(mon, " BAR%d: ", (int) qdict_get_int(qdict, "bar")); |
| 1238 |
|
| 1239 |
addr = qdict_get_int(qdict, "address");
|
| 1240 |
size = qdict_get_int(qdict, "size");
|
| 1241 |
|
| 1242 |
if (!strcmp(qdict_get_str(qdict, "type"), "io")) { |
| 1243 |
monitor_printf(mon, "I/O at 0x%04"FMT_PCIBUS
|
| 1244 |
" [0x%04"FMT_PCIBUS"].\n", |
| 1245 |
addr, addr + size - 1);
|
| 1246 |
} else {
|
| 1247 |
monitor_printf(mon, "%d bit%s memory at 0x%08"FMT_PCIBUS
|
| 1248 |
" [0x%08"FMT_PCIBUS"].\n", |
| 1249 |
qdict_get_bool(qdict, "mem_type_64") ? 64 : 32, |
| 1250 |
qdict_get_bool(qdict, "prefetch") ?
|
| 1251 |
" prefetchable" : "", addr, addr + size - 1); |
| 1252 |
} |
| 1253 |
} |
| 1254 |
|
| 1255 |
monitor_printf(mon, " id \"%s\"\n", qdict_get_str(device, "qdev_id")); |
| 1256 |
|
| 1257 |
if (qdict_haskey(device, "pci_bridge")) { |
| 1258 |
qdict = qdict_get_qdict(device, "pci_bridge");
|
| 1259 |
if (qdict_haskey(qdict, "devices")) { |
| 1260 |
QListEntry *dev; |
| 1261 |
QLIST_FOREACH_ENTRY(qdict_get_qlist(qdict, "devices"), dev) {
|
| 1262 |
pci_device_print(mon, qobject_to_qdict(qlist_entry_obj(dev))); |
| 1263 |
} |
| 1264 |
} |
| 1265 |
} |
| 1266 |
} |
| 1267 |
|
| 1268 |
void do_pci_info_print(Monitor *mon, const QObject *data) |
| 1269 |
{
|
| 1270 |
QListEntry *bus, *dev; |
| 1271 |
|
| 1272 |
QLIST_FOREACH_ENTRY(qobject_to_qlist(data), bus) {
|
| 1273 |
QDict *qdict = qobject_to_qdict(qlist_entry_obj(bus)); |
| 1274 |
QLIST_FOREACH_ENTRY(qdict_get_qlist(qdict, "devices"), dev) {
|
| 1275 |
pci_device_print(mon, qobject_to_qdict(qlist_entry_obj(dev))); |
| 1276 |
} |
| 1277 |
} |
| 1278 |
} |
| 1279 |
|
| 1280 |
static QObject *pci_get_dev_class(const PCIDevice *dev) |
| 1281 |
{
|
| 1282 |
int class;
|
| 1283 |
const pci_class_desc *desc;
|
| 1284 |
|
| 1285 |
class = pci_get_word(dev->config + PCI_CLASS_DEVICE); |
| 1286 |
desc = pci_class_descriptions; |
| 1287 |
while (desc->desc && class != desc->class)
|
| 1288 |
desc++; |
| 1289 |
|
| 1290 |
if (desc->desc) {
|
| 1291 |
return qobject_from_jsonf("{ 'desc': %s, 'class': %d }", |
| 1292 |
desc->desc, class); |
| 1293 |
} else {
|
| 1294 |
return qobject_from_jsonf("{ 'class': %d }", class); |
| 1295 |
} |
| 1296 |
} |
| 1297 |
|
| 1298 |
static QObject *pci_get_dev_id(const PCIDevice *dev) |
| 1299 |
{
|
| 1300 |
return qobject_from_jsonf("{ 'device': %d, 'vendor': %d }", |
| 1301 |
pci_get_word(dev->config + PCI_VENDOR_ID), |
| 1302 |
pci_get_word(dev->config + PCI_DEVICE_ID)); |
| 1303 |
} |
| 1304 |
|
| 1305 |
static QObject *pci_get_regions_list(const PCIDevice *dev) |
| 1306 |
{
|
| 1307 |
int i;
|
| 1308 |
QList *regions_list; |
| 1309 |
|
| 1310 |
regions_list = qlist_new(); |
| 1311 |
|
| 1312 |
for (i = 0; i < PCI_NUM_REGIONS; i++) { |
| 1313 |
QObject *obj; |
| 1314 |
const PCIIORegion *r = &dev->io_regions[i];
|
| 1315 |
|
| 1316 |
if (!r->size) {
|
| 1317 |
continue;
|
| 1318 |
} |
| 1319 |
|
| 1320 |
if (r->type & PCI_BASE_ADDRESS_SPACE_IO) {
|
| 1321 |
obj = qobject_from_jsonf("{ 'bar': %d, 'type': 'io', "
|
| 1322 |
"'address': %" PRId64 ", " |
| 1323 |
"'size': %" PRId64 " }", |
| 1324 |
i, r->addr, r->size); |
| 1325 |
} else {
|
| 1326 |
int mem_type_64 = r->type & PCI_BASE_ADDRESS_MEM_TYPE_64;
|
| 1327 |
|
| 1328 |
obj = qobject_from_jsonf("{ 'bar': %d, 'type': 'memory', "
|
| 1329 |
"'mem_type_64': %i, 'prefetch': %i, "
|
| 1330 |
"'address': %" PRId64 ", " |
| 1331 |
"'size': %" PRId64 " }", |
| 1332 |
i, mem_type_64, |
| 1333 |
r->type & PCI_BASE_ADDRESS_MEM_PREFETCH, |
| 1334 |
r->addr, r->size); |
| 1335 |
} |
| 1336 |
|
| 1337 |
qlist_append_obj(regions_list, obj); |
| 1338 |
} |
| 1339 |
|
| 1340 |
return QOBJECT(regions_list);
|
| 1341 |
} |
| 1342 |
|
| 1343 |
static QObject *pci_get_devices_list(PCIBus *bus, int bus_num); |
| 1344 |
|
| 1345 |
static QObject *pci_get_dev_dict(PCIDevice *dev, PCIBus *bus, int bus_num) |
| 1346 |
{
|
| 1347 |
uint8_t type; |
| 1348 |
QObject *obj; |
| 1349 |
|
| 1350 |
obj = qobject_from_jsonf("{ 'bus': %d, 'slot': %d, 'function': %d," "'class_info': %p, 'id': %p, 'regions': %p," |
| 1351 |
" 'qdev_id': %s }",
|
| 1352 |
bus_num, |
| 1353 |
PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn), |
| 1354 |
pci_get_dev_class(dev), pci_get_dev_id(dev), |
| 1355 |
pci_get_regions_list(dev), |
| 1356 |
dev->qdev.id ? dev->qdev.id : "");
|
| 1357 |
|
| 1358 |
if (dev->config[PCI_INTERRUPT_PIN] != 0) { |
| 1359 |
QDict *qdict = qobject_to_qdict(obj); |
| 1360 |
qdict_put(qdict, "irq", qint_from_int(dev->config[PCI_INTERRUPT_LINE]));
|
| 1361 |
} |
| 1362 |
|
| 1363 |
type = dev->config[PCI_HEADER_TYPE] & ~PCI_HEADER_TYPE_MULTI_FUNCTION; |
| 1364 |
if (type == PCI_HEADER_TYPE_BRIDGE) {
|
| 1365 |
QDict *qdict; |
| 1366 |
QObject *pci_bridge; |
| 1367 |
|
| 1368 |
pci_bridge = qobject_from_jsonf("{ 'bus': "
|
| 1369 |
"{ 'number': %d, 'secondary': %d, 'subordinate': %d }, "
|
| 1370 |
"'io_range': { 'base': %" PRId64 ", 'limit': %" PRId64 "}, " |
| 1371 |
"'memory_range': { 'base': %" PRId64 ", 'limit': %" PRId64 "}, " |
| 1372 |
"'prefetchable_range': { 'base': %" PRId64 ", 'limit': %" PRId64 "} }", |
| 1373 |
dev->config[PCI_PRIMARY_BUS], dev->config[PCI_SECONDARY_BUS], |
| 1374 |
dev->config[PCI_SUBORDINATE_BUS], |
| 1375 |
pci_bridge_get_base(dev, PCI_BASE_ADDRESS_SPACE_IO), |
| 1376 |
pci_bridge_get_limit(dev, PCI_BASE_ADDRESS_SPACE_IO), |
| 1377 |
pci_bridge_get_base(dev, PCI_BASE_ADDRESS_SPACE_MEMORY), |
| 1378 |
pci_bridge_get_limit(dev, PCI_BASE_ADDRESS_SPACE_MEMORY), |
| 1379 |
pci_bridge_get_base(dev, PCI_BASE_ADDRESS_SPACE_MEMORY | |
| 1380 |
PCI_BASE_ADDRESS_MEM_PREFETCH), |
| 1381 |
pci_bridge_get_limit(dev, PCI_BASE_ADDRESS_SPACE_MEMORY | |
| 1382 |
PCI_BASE_ADDRESS_MEM_PREFETCH)); |
| 1383 |
|
| 1384 |
if (dev->config[PCI_SECONDARY_BUS] != 0) { |
| 1385 |
PCIBus *child_bus = pci_find_bus(bus, dev->config[PCI_SECONDARY_BUS]); |
| 1386 |
|
| 1387 |
if (child_bus) {
|
| 1388 |
qdict = qobject_to_qdict(pci_bridge); |
| 1389 |
qdict_put_obj(qdict, "devices",
|
| 1390 |
pci_get_devices_list(child_bus, |
| 1391 |
dev->config[PCI_SECONDARY_BUS])); |
| 1392 |
} |
| 1393 |
} |
| 1394 |
qdict = qobject_to_qdict(obj); |
| 1395 |
qdict_put_obj(qdict, "pci_bridge", pci_bridge);
|
| 1396 |
} |
| 1397 |
|
| 1398 |
return obj;
|
| 1399 |
} |
| 1400 |
|
| 1401 |
static QObject *pci_get_devices_list(PCIBus *bus, int bus_num) |
| 1402 |
{
|
| 1403 |
int devfn;
|
| 1404 |
PCIDevice *dev; |
| 1405 |
QList *dev_list; |
| 1406 |
|
| 1407 |
dev_list = qlist_new(); |
| 1408 |
|
| 1409 |
for (devfn = 0; devfn < ARRAY_SIZE(bus->devices); devfn++) { |
| 1410 |
dev = bus->devices[devfn]; |
| 1411 |
if (dev) {
|
| 1412 |
qlist_append_obj(dev_list, pci_get_dev_dict(dev, bus, bus_num)); |
| 1413 |
} |
| 1414 |
} |
| 1415 |
|
| 1416 |
return QOBJECT(dev_list);
|
| 1417 |
} |
| 1418 |
|
| 1419 |
static QObject *pci_get_bus_dict(PCIBus *bus, int bus_num) |
| 1420 |
{
|
| 1421 |
bus = pci_find_bus(bus, bus_num); |
| 1422 |
if (bus) {
|
| 1423 |
return qobject_from_jsonf("{ 'bus': %d, 'devices': %p }", |
| 1424 |
bus_num, pci_get_devices_list(bus, bus_num)); |
| 1425 |
} |
| 1426 |
|
| 1427 |
return NULL; |
| 1428 |
} |
| 1429 |
|
| 1430 |
void do_pci_info(Monitor *mon, QObject **ret_data)
|
| 1431 |
{
|
| 1432 |
QList *bus_list; |
| 1433 |
struct PCIHostBus *host;
|
| 1434 |
|
| 1435 |
bus_list = qlist_new(); |
| 1436 |
|
| 1437 |
QLIST_FOREACH(host, &host_buses, next) {
|
| 1438 |
QObject *obj = pci_get_bus_dict(host->bus, 0);
|
| 1439 |
if (obj) {
|
| 1440 |
qlist_append_obj(bus_list, obj); |
| 1441 |
} |
| 1442 |
} |
| 1443 |
|
| 1444 |
*ret_data = QOBJECT(bus_list); |
| 1445 |
} |
| 1446 |
|
| 1447 |
static const char * const pci_nic_models[] = { |
| 1448 |
"ne2k_pci",
|
| 1449 |
"i82551",
|
| 1450 |
"i82557b",
|
| 1451 |
"i82559er",
|
| 1452 |
"rtl8139",
|
| 1453 |
"e1000",
|
| 1454 |
"pcnet",
|
| 1455 |
"virtio",
|
| 1456 |
NULL
|
| 1457 |
}; |
| 1458 |
|
| 1459 |
static const char * const pci_nic_names[] = { |
| 1460 |
"ne2k_pci",
|
| 1461 |
"i82551",
|
| 1462 |
"i82557b",
|
| 1463 |
"i82559er",
|
| 1464 |
"rtl8139",
|
| 1465 |
"e1000",
|
| 1466 |
"pcnet",
|
| 1467 |
"virtio-net-pci",
|
| 1468 |
NULL
|
| 1469 |
}; |
| 1470 |
|
| 1471 |
/* Initialize a PCI NIC. */
|
| 1472 |
/* FIXME callers should check for failure, but don't */
|
| 1473 |
PCIDevice *pci_nic_init(NICInfo *nd, const char *default_model, |
| 1474 |
const char *default_devaddr) |
| 1475 |
{
|
| 1476 |
const char *devaddr = nd->devaddr ? nd->devaddr : default_devaddr; |
| 1477 |
PCIBus *bus; |
| 1478 |
int devfn;
|
| 1479 |
PCIDevice *pci_dev; |
| 1480 |
DeviceState *dev; |
| 1481 |
int i;
|
| 1482 |
|
| 1483 |
i = qemu_find_nic_model(nd, pci_nic_models, default_model); |
| 1484 |
if (i < 0) |
| 1485 |
return NULL; |
| 1486 |
|
| 1487 |
bus = pci_get_bus_devfn(&devfn, devaddr); |
| 1488 |
if (!bus) {
|
| 1489 |
error_report("Invalid PCI device address %s for device %s",
|
| 1490 |
devaddr, pci_nic_names[i]); |
| 1491 |
return NULL; |
| 1492 |
} |
| 1493 |
|
| 1494 |
pci_dev = pci_create(bus, devfn, pci_nic_names[i]); |
| 1495 |
dev = &pci_dev->qdev; |
| 1496 |
qdev_set_nic_properties(dev, nd); |
| 1497 |
if (qdev_init(dev) < 0) |
| 1498 |
return NULL; |
| 1499 |
return pci_dev;
|
| 1500 |
} |
| 1501 |
|
| 1502 |
PCIDevice *pci_nic_init_nofail(NICInfo *nd, const char *default_model, |
| 1503 |
const char *default_devaddr) |
| 1504 |
{
|
| 1505 |
PCIDevice *res; |
| 1506 |
|
| 1507 |
if (qemu_show_nic_models(nd->model, pci_nic_models))
|
| 1508 |
exit(0);
|
| 1509 |
|
| 1510 |
res = pci_nic_init(nd, default_model, default_devaddr); |
| 1511 |
if (!res)
|
| 1512 |
exit(1);
|
| 1513 |
return res;
|
| 1514 |
} |
| 1515 |
|
| 1516 |
static void pci_bridge_update_mappings_fn(PCIBus *b, PCIDevice *d) |
| 1517 |
{
|
| 1518 |
pci_update_mappings(d); |
| 1519 |
} |
| 1520 |
|
| 1521 |
static void pci_bridge_update_mappings(PCIBus *b) |
| 1522 |
{
|
| 1523 |
PCIBus *child; |
| 1524 |
|
| 1525 |
pci_for_each_device_under_bus(b, pci_bridge_update_mappings_fn); |
| 1526 |
|
| 1527 |
QLIST_FOREACH(child, &b->child, sibling) {
|
| 1528 |
pci_bridge_update_mappings(child); |
| 1529 |
} |
| 1530 |
} |
| 1531 |
|
| 1532 |
static void pci_bridge_write_config(PCIDevice *d, |
| 1533 |
uint32_t address, uint32_t val, int len)
|
| 1534 |
{
|
| 1535 |
pci_default_write_config(d, address, val, len); |
| 1536 |
|
| 1537 |
if (/* io base/limit */ |
| 1538 |
ranges_overlap(address, len, PCI_IO_BASE, 2) ||
|
| 1539 |
|
| 1540 |
/* memory base/limit, prefetchable base/limit and
|
| 1541 |
io base/limit upper 16 */
|
| 1542 |
ranges_overlap(address, len, PCI_MEMORY_BASE, 20)) {
|
| 1543 |
PCIBridge *s = container_of(d, PCIBridge, dev); |
| 1544 |
PCIBus *secondary_bus = &s->bus; |
| 1545 |
pci_bridge_update_mappings(secondary_bus); |
| 1546 |
} |
| 1547 |
} |
| 1548 |
|
| 1549 |
PCIBus *pci_find_bus(PCIBus *bus, int bus_num)
|
| 1550 |
{
|
| 1551 |
PCIBus *sec; |
| 1552 |
|
| 1553 |
if (!bus) {
|
| 1554 |
return NULL; |
| 1555 |
} |
| 1556 |
|
| 1557 |
if (pci_bus_num(bus) == bus_num) {
|
| 1558 |
return bus;
|
| 1559 |
} |
| 1560 |
|
| 1561 |
/* try child bus */
|
| 1562 |
if (!bus->parent_dev /* host pci bridge */ || |
| 1563 |
(bus->parent_dev->config[PCI_SECONDARY_BUS] < bus_num && |
| 1564 |
bus_num <= bus->parent_dev->config[PCI_SUBORDINATE_BUS])) {
|
| 1565 |
for (; bus; bus = sec) {
|
| 1566 |
QLIST_FOREACH(sec, &bus->child, sibling) {
|
| 1567 |
assert(sec->parent_dev); |
| 1568 |
if (sec->parent_dev->config[PCI_SECONDARY_BUS] == bus_num) {
|
| 1569 |
return sec;
|
| 1570 |
} |
| 1571 |
if (sec->parent_dev->config[PCI_SECONDARY_BUS] < bus_num &&
|
| 1572 |
bus_num <= sec->parent_dev->config[PCI_SUBORDINATE_BUS]) {
|
| 1573 |
break;
|
| 1574 |
} |
| 1575 |
} |
| 1576 |
} |
| 1577 |
} |
| 1578 |
|
| 1579 |
return NULL; |
| 1580 |
} |
| 1581 |
|
| 1582 |
PCIDevice *pci_find_device(PCIBus *bus, int bus_num, int slot, int function) |
| 1583 |
{
|
| 1584 |
bus = pci_find_bus(bus, bus_num); |
| 1585 |
|
| 1586 |
if (!bus)
|
| 1587 |
return NULL; |
| 1588 |
|
| 1589 |
return bus->devices[PCI_DEVFN(slot, function)];
|
| 1590 |
} |
| 1591 |
|
| 1592 |
static int pci_bridge_initfn(PCIDevice *dev) |
| 1593 |
{
|
| 1594 |
PCIBridge *s = DO_UPCAST(PCIBridge, dev, dev); |
| 1595 |
|
| 1596 |
pci_config_set_vendor_id(s->dev.config, s->vid); |
| 1597 |
pci_config_set_device_id(s->dev.config, s->did); |
| 1598 |
|
| 1599 |
pci_set_word(dev->config + PCI_STATUS, |
| 1600 |
PCI_STATUS_66MHZ | PCI_STATUS_FAST_BACK); |
| 1601 |
pci_config_set_class(dev->config, PCI_CLASS_BRIDGE_PCI); |
| 1602 |
dev->config[PCI_HEADER_TYPE] = |
| 1603 |
(dev->config[PCI_HEADER_TYPE] & PCI_HEADER_TYPE_MULTI_FUNCTION) | |
| 1604 |
PCI_HEADER_TYPE_BRIDGE; |
| 1605 |
pci_set_word(dev->config + PCI_SEC_STATUS, |
| 1606 |
PCI_STATUS_66MHZ | PCI_STATUS_FAST_BACK); |
| 1607 |
return 0; |
| 1608 |
} |
| 1609 |
|
| 1610 |
static int pci_bridge_exitfn(PCIDevice *pci_dev) |
| 1611 |
{
|
| 1612 |
PCIBridge *s = DO_UPCAST(PCIBridge, dev, pci_dev); |
| 1613 |
PCIBus *bus = &s->bus; |
| 1614 |
pci_unregister_secondary_bus(bus); |
| 1615 |
return 0; |
| 1616 |
} |
| 1617 |
|
| 1618 |
PCIBus *pci_bridge_init(PCIBus *bus, int devfn, bool multifunction, |
| 1619 |
uint16_t vid, uint16_t did, |
| 1620 |
pci_map_irq_fn map_irq, const char *name) |
| 1621 |
{
|
| 1622 |
PCIDevice *dev; |
| 1623 |
PCIBridge *s; |
| 1624 |
|
| 1625 |
dev = pci_create_multifunction(bus, devfn, multifunction, "pci-bridge");
|
| 1626 |
qdev_prop_set_uint32(&dev->qdev, "vendorid", vid);
|
| 1627 |
qdev_prop_set_uint32(&dev->qdev, "deviceid", did);
|
| 1628 |
qdev_init_nofail(&dev->qdev); |
| 1629 |
|
| 1630 |
s = DO_UPCAST(PCIBridge, dev, dev); |
| 1631 |
pci_register_secondary_bus(bus, &s->bus, &s->dev, map_irq, name); |
| 1632 |
return &s->bus;
|
| 1633 |
} |
| 1634 |
|
| 1635 |
PCIDevice *pci_bridge_get_device(PCIBus *bus) |
| 1636 |
{
|
| 1637 |
return bus->parent_dev;
|
| 1638 |
} |
| 1639 |
|
| 1640 |
static int pci_qdev_init(DeviceState *qdev, DeviceInfo *base) |
| 1641 |
{
|
| 1642 |
PCIDevice *pci_dev = (PCIDevice *)qdev; |
| 1643 |
PCIDeviceInfo *info = container_of(base, PCIDeviceInfo, qdev); |
| 1644 |
PCIBus *bus; |
| 1645 |
int devfn, rc;
|
| 1646 |
|
| 1647 |
/* initialize cap_present for pci_is_express() and pci_config_size() */
|
| 1648 |
if (info->is_express) {
|
| 1649 |
pci_dev->cap_present |= QEMU_PCI_CAP_EXPRESS; |
| 1650 |
} |
| 1651 |
|
| 1652 |
bus = FROM_QBUS(PCIBus, qdev_get_parent_bus(qdev)); |
| 1653 |
devfn = pci_dev->devfn; |
| 1654 |
pci_dev = do_pci_register_device(pci_dev, bus, base->name, devfn, |
| 1655 |
info->config_read, info->config_write, |
| 1656 |
info->is_bridge); |
| 1657 |
if (pci_dev == NULL) |
| 1658 |
return -1; |
| 1659 |
rc = info->init(pci_dev); |
| 1660 |
if (rc != 0) { |
| 1661 |
do_pci_unregister_device(pci_dev); |
| 1662 |
return rc;
|
| 1663 |
} |
| 1664 |
|
| 1665 |
/* rom loading */
|
| 1666 |
if (pci_dev->romfile == NULL && info->romfile != NULL) |
| 1667 |
pci_dev->romfile = qemu_strdup(info->romfile); |
| 1668 |
pci_add_option_rom(pci_dev); |
| 1669 |
|
| 1670 |
if (qdev->hotplugged) {
|
| 1671 |
rc = bus->hotplug(bus->hotplug_qdev, pci_dev, 1);
|
| 1672 |
if (rc != 0) { |
| 1673 |
int r = pci_unregister_device(&pci_dev->qdev);
|
| 1674 |
assert(!r); |
| 1675 |
return rc;
|
| 1676 |
} |
| 1677 |
} |
| 1678 |
return 0; |
| 1679 |
} |
| 1680 |
|
| 1681 |
static int pci_unplug_device(DeviceState *qdev) |
| 1682 |
{
|
| 1683 |
PCIDevice *dev = DO_UPCAST(PCIDevice, qdev, qdev); |
| 1684 |
|
| 1685 |
return dev->bus->hotplug(dev->bus->hotplug_qdev, dev, 0); |
| 1686 |
} |
| 1687 |
|
| 1688 |
void pci_qdev_register(PCIDeviceInfo *info)
|
| 1689 |
{
|
| 1690 |
info->qdev.init = pci_qdev_init; |
| 1691 |
info->qdev.unplug = pci_unplug_device; |
| 1692 |
info->qdev.exit = pci_unregister_device; |
| 1693 |
info->qdev.bus_info = &pci_bus_info; |
| 1694 |
qdev_register(&info->qdev); |
| 1695 |
} |
| 1696 |
|
| 1697 |
void pci_qdev_register_many(PCIDeviceInfo *info)
|
| 1698 |
{
|
| 1699 |
while (info->qdev.name) {
|
| 1700 |
pci_qdev_register(info); |
| 1701 |
info++; |
| 1702 |
} |
| 1703 |
} |
| 1704 |
|
| 1705 |
PCIDevice *pci_create_multifunction(PCIBus *bus, int devfn, bool multifunction, |
| 1706 |
const char *name) |
| 1707 |
{
|
| 1708 |
DeviceState *dev; |
| 1709 |
|
| 1710 |
dev = qdev_create(&bus->qbus, name); |
| 1711 |
qdev_prop_set_uint32(dev, "addr", devfn);
|
| 1712 |
qdev_prop_set_bit(dev, "multifunction", multifunction);
|
| 1713 |
return DO_UPCAST(PCIDevice, qdev, dev);
|
| 1714 |
} |
| 1715 |
|
| 1716 |
PCIDevice *pci_create_simple_multifunction(PCIBus *bus, int devfn,
|
| 1717 |
bool multifunction,
|
| 1718 |
const char *name) |
| 1719 |
{
|
| 1720 |
PCIDevice *dev = pci_create_multifunction(bus, devfn, multifunction, name); |
| 1721 |
qdev_init_nofail(&dev->qdev); |
| 1722 |
return dev;
|
| 1723 |
} |
| 1724 |
|
| 1725 |
PCIDevice *pci_create(PCIBus *bus, int devfn, const char *name) |
| 1726 |
{
|
| 1727 |
return pci_create_multifunction(bus, devfn, false, name); |
| 1728 |
} |
| 1729 |
|
| 1730 |
PCIDevice *pci_create_simple(PCIBus *bus, int devfn, const char *name) |
| 1731 |
{
|
| 1732 |
return pci_create_simple_multifunction(bus, devfn, false, name); |
| 1733 |
} |
| 1734 |
|
| 1735 |
static int pci_find_space(PCIDevice *pdev, uint8_t size) |
| 1736 |
{
|
| 1737 |
int config_size = pci_config_size(pdev);
|
| 1738 |
int offset = PCI_CONFIG_HEADER_SIZE;
|
| 1739 |
int i;
|
| 1740 |
for (i = PCI_CONFIG_HEADER_SIZE; i < config_size; ++i)
|
| 1741 |
if (pdev->used[i])
|
| 1742 |
offset = i + 1;
|
| 1743 |
else if (i - offset + 1 == size) |
| 1744 |
return offset;
|
| 1745 |
return 0; |
| 1746 |
} |
| 1747 |
|
| 1748 |
static uint8_t pci_find_capability_list(PCIDevice *pdev, uint8_t cap_id,
|
| 1749 |
uint8_t *prev_p) |
| 1750 |
{
|
| 1751 |
uint8_t next, prev; |
| 1752 |
|
| 1753 |
if (!(pdev->config[PCI_STATUS] & PCI_STATUS_CAP_LIST))
|
| 1754 |
return 0; |
| 1755 |
|
| 1756 |
for (prev = PCI_CAPABILITY_LIST; (next = pdev->config[prev]);
|
| 1757 |
prev = next + PCI_CAP_LIST_NEXT) |
| 1758 |
if (pdev->config[next + PCI_CAP_LIST_ID] == cap_id)
|
| 1759 |
break;
|
| 1760 |
|
| 1761 |
if (prev_p)
|
| 1762 |
*prev_p = prev; |
| 1763 |
return next;
|
| 1764 |
} |
| 1765 |
|
| 1766 |
static void pci_map_option_rom(PCIDevice *pdev, int region_num, pcibus_t addr, pcibus_t size, int type) |
| 1767 |
{
|
| 1768 |
cpu_register_physical_memory(addr, size, pdev->rom_offset); |
| 1769 |
} |
| 1770 |
|
| 1771 |
/* Add an option rom for the device */
|
| 1772 |
static int pci_add_option_rom(PCIDevice *pdev) |
| 1773 |
{
|
| 1774 |
int size;
|
| 1775 |
char *path;
|
| 1776 |
void *ptr;
|
| 1777 |
char name[32]; |
| 1778 |
|
| 1779 |
if (!pdev->romfile)
|
| 1780 |
return 0; |
| 1781 |
if (strlen(pdev->romfile) == 0) |
| 1782 |
return 0; |
| 1783 |
|
| 1784 |
if (!pdev->rom_bar) {
|
| 1785 |
/*
|
| 1786 |
* Load rom via fw_cfg instead of creating a rom bar,
|
| 1787 |
* for 0.11 compatibility.
|
| 1788 |
*/
|
| 1789 |
int class = pci_get_word(pdev->config + PCI_CLASS_DEVICE);
|
| 1790 |
if (class == 0x0300) { |
| 1791 |
rom_add_vga(pdev->romfile); |
| 1792 |
} else {
|
| 1793 |
rom_add_option(pdev->romfile); |
| 1794 |
} |
| 1795 |
return 0; |
| 1796 |
} |
| 1797 |
|
| 1798 |
path = qemu_find_file(QEMU_FILE_TYPE_BIOS, pdev->romfile); |
| 1799 |
if (path == NULL) { |
| 1800 |
path = qemu_strdup(pdev->romfile); |
| 1801 |
} |
| 1802 |
|
| 1803 |
size = get_image_size(path); |
| 1804 |
if (size < 0) { |
| 1805 |
error_report("%s: failed to find romfile \"%s\"",
|
| 1806 |
__FUNCTION__, pdev->romfile); |
| 1807 |
return -1; |
| 1808 |
} |
| 1809 |
if (size & (size - 1)) { |
| 1810 |
size = 1 << qemu_fls(size);
|
| 1811 |
} |
| 1812 |
|
| 1813 |
if (pdev->qdev.info->vmsd)
|
| 1814 |
snprintf(name, sizeof(name), "%s.rom", pdev->qdev.info->vmsd->name); |
| 1815 |
else
|
| 1816 |
snprintf(name, sizeof(name), "%s.rom", pdev->qdev.info->name); |
| 1817 |
pdev->rom_offset = qemu_ram_alloc(&pdev->qdev, name, size); |
| 1818 |
|
| 1819 |
ptr = qemu_get_ram_ptr(pdev->rom_offset); |
| 1820 |
load_image(path, ptr); |
| 1821 |
qemu_free(path); |
| 1822 |
|
| 1823 |
pci_register_bar(pdev, PCI_ROM_SLOT, size, |
| 1824 |
0, pci_map_option_rom);
|
| 1825 |
|
| 1826 |
return 0; |
| 1827 |
} |
| 1828 |
|
| 1829 |
static void pci_del_option_rom(PCIDevice *pdev) |
| 1830 |
{
|
| 1831 |
if (!pdev->rom_offset)
|
| 1832 |
return;
|
| 1833 |
|
| 1834 |
qemu_ram_free(pdev->rom_offset); |
| 1835 |
pdev->rom_offset = 0;
|
| 1836 |
} |
| 1837 |
|
| 1838 |
/* Reserve space and add capability to the linked list in pci config space */
|
| 1839 |
int pci_add_capability_at_offset(PCIDevice *pdev, uint8_t cap_id,
|
| 1840 |
uint8_t offset, uint8_t size) |
| 1841 |
{
|
| 1842 |
uint8_t *config = pdev->config + offset; |
| 1843 |
config[PCI_CAP_LIST_ID] = cap_id; |
| 1844 |
config[PCI_CAP_LIST_NEXT] = pdev->config[PCI_CAPABILITY_LIST]; |
| 1845 |
pdev->config[PCI_CAPABILITY_LIST] = offset; |
| 1846 |
pdev->config[PCI_STATUS] |= PCI_STATUS_CAP_LIST; |
| 1847 |
memset(pdev->used + offset, 0xFF, size);
|
| 1848 |
/* Make capability read-only by default */
|
| 1849 |
memset(pdev->wmask + offset, 0, size);
|
| 1850 |
/* Check capability by default */
|
| 1851 |
memset(pdev->cmask + offset, 0xFF, size);
|
| 1852 |
return offset;
|
| 1853 |
} |
| 1854 |
|
| 1855 |
/* Find and reserve space and add capability to the linked list
|
| 1856 |
* in pci config space */
|
| 1857 |
int pci_add_capability(PCIDevice *pdev, uint8_t cap_id, uint8_t size)
|
| 1858 |
{
|
| 1859 |
uint8_t offset = pci_find_space(pdev, size); |
| 1860 |
if (!offset) {
|
| 1861 |
return -ENOSPC;
|
| 1862 |
} |
| 1863 |
return pci_add_capability_at_offset(pdev, cap_id, offset, size);
|
| 1864 |
} |
| 1865 |
|
| 1866 |
/* Unlink capability from the pci config space. */
|
| 1867 |
void pci_del_capability(PCIDevice *pdev, uint8_t cap_id, uint8_t size)
|
| 1868 |
{
|
| 1869 |
uint8_t prev, offset = pci_find_capability_list(pdev, cap_id, &prev); |
| 1870 |
if (!offset)
|
| 1871 |
return;
|
| 1872 |
pdev->config[prev] = pdev->config[offset + PCI_CAP_LIST_NEXT]; |
| 1873 |
/* Make capability writeable again */
|
| 1874 |
memset(pdev->wmask + offset, 0xff, size);
|
| 1875 |
/* Clear cmask as device-specific registers can't be checked */
|
| 1876 |
memset(pdev->cmask + offset, 0, size);
|
| 1877 |
memset(pdev->used + offset, 0, size);
|
| 1878 |
|
| 1879 |
if (!pdev->config[PCI_CAPABILITY_LIST])
|
| 1880 |
pdev->config[PCI_STATUS] &= ~PCI_STATUS_CAP_LIST; |
| 1881 |
} |
| 1882 |
|
| 1883 |
/* Reserve space for capability at a known offset (to call after load). */
|
| 1884 |
void pci_reserve_capability(PCIDevice *pdev, uint8_t offset, uint8_t size)
|
| 1885 |
{
|
| 1886 |
memset(pdev->used + offset, 0xff, size);
|
| 1887 |
} |
| 1888 |
|
| 1889 |
uint8_t pci_find_capability(PCIDevice *pdev, uint8_t cap_id) |
| 1890 |
{
|
| 1891 |
return pci_find_capability_list(pdev, cap_id, NULL); |
| 1892 |
} |
| 1893 |
|
| 1894 |
static void pcibus_dev_print(Monitor *mon, DeviceState *dev, int indent) |
| 1895 |
{
|
| 1896 |
PCIDevice *d = (PCIDevice *)dev; |
| 1897 |
const pci_class_desc *desc;
|
| 1898 |
char ctxt[64]; |
| 1899 |
PCIIORegion *r; |
| 1900 |
int i, class;
|
| 1901 |
|
| 1902 |
class = pci_get_word(d->config + PCI_CLASS_DEVICE); |
| 1903 |
desc = pci_class_descriptions; |
| 1904 |
while (desc->desc && class != desc->class)
|
| 1905 |
desc++; |
| 1906 |
if (desc->desc) {
|
| 1907 |
snprintf(ctxt, sizeof(ctxt), "%s", desc->desc); |
| 1908 |
} else {
|
| 1909 |
snprintf(ctxt, sizeof(ctxt), "Class %04x", class); |
| 1910 |
} |
| 1911 |
|
| 1912 |
monitor_printf(mon, "%*sclass %s, addr %02x:%02x.%x, "
|
| 1913 |
"pci id %04x:%04x (sub %04x:%04x)\n",
|
| 1914 |
indent, "", ctxt,
|
| 1915 |
d->config[PCI_SECONDARY_BUS], |
| 1916 |
PCI_SLOT(d->devfn), PCI_FUNC(d->devfn), |
| 1917 |
pci_get_word(d->config + PCI_VENDOR_ID), |
| 1918 |
pci_get_word(d->config + PCI_DEVICE_ID), |
| 1919 |
pci_get_word(d->config + PCI_SUBSYSTEM_VENDOR_ID), |
| 1920 |
pci_get_word(d->config + PCI_SUBSYSTEM_ID)); |
| 1921 |
for (i = 0; i < PCI_NUM_REGIONS; i++) { |
| 1922 |
r = &d->io_regions[i]; |
| 1923 |
if (!r->size)
|
| 1924 |
continue;
|
| 1925 |
monitor_printf(mon, "%*sbar %d: %s at 0x%"FMT_PCIBUS
|
| 1926 |
" [0x%"FMT_PCIBUS"]\n", |
| 1927 |
indent, "",
|
| 1928 |
i, r->type & PCI_BASE_ADDRESS_SPACE_IO ? "i/o" : "mem", |
| 1929 |
r->addr, r->addr + r->size - 1);
|
| 1930 |
} |
| 1931 |
} |
| 1932 |
|
| 1933 |
static char *pcibus_get_dev_path(DeviceState *dev) |
| 1934 |
{
|
| 1935 |
PCIDevice *d = (PCIDevice *)dev; |
| 1936 |
char path[16]; |
| 1937 |
|
| 1938 |
snprintf(path, sizeof(path), "%04x:%02x:%02x.%x", |
| 1939 |
pci_find_domain(d->bus), d->config[PCI_SECONDARY_BUS], |
| 1940 |
PCI_SLOT(d->devfn), PCI_FUNC(d->devfn)); |
| 1941 |
|
| 1942 |
return strdup(path);
|
| 1943 |
} |
| 1944 |
|
| 1945 |
static PCIDeviceInfo bridge_info = {
|
| 1946 |
.qdev.name = "pci-bridge",
|
| 1947 |
.qdev.size = sizeof(PCIBridge),
|
| 1948 |
.init = pci_bridge_initfn, |
| 1949 |
.exit = pci_bridge_exitfn, |
| 1950 |
.config_write = pci_bridge_write_config, |
| 1951 |
.is_bridge = 1,
|
| 1952 |
.qdev.props = (Property[]) {
|
| 1953 |
DEFINE_PROP_HEX32("vendorid", PCIBridge, vid, 0), |
| 1954 |
DEFINE_PROP_HEX32("deviceid", PCIBridge, did, 0), |
| 1955 |
DEFINE_PROP_END_OF_LIST(), |
| 1956 |
} |
| 1957 |
}; |
| 1958 |
|
| 1959 |
static void pci_register_devices(void) |
| 1960 |
{
|
| 1961 |
pci_qdev_register(&bridge_info); |
| 1962 |
} |
| 1963 |
|
| 1964 |
device_init(pci_register_devices) |