| /* |
| * QEMU PCI bus manager |
| * |
| * Copyright (c) 2004 Fabrice Bellard |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a copy |
| * of this software and associated documentation files (the "Software"), to deal |
| * in the Software without restriction, including without limitation the rights |
| * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| * copies of the Software, and to permit persons to whom the Software is |
| * furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| * THE SOFTWARE. |
| */ |
| #include "hw/hw.h" |
| #include "hw/pci/pci.h" |
| #include "hw/pci/pci_bridge.h" |
| #include "hw/pci/pci_bus.h" |
| #include "monitor/monitor.h" |
| #include "net/net.h" |
| #include "sysemu/sysemu.h" |
| #include "hw/loader.h" |
| #include "qemu/range.h" |
| #include "qmp-commands.h" |
| #include "hw/pci/msi.h" |
| #include "hw/pci/msix.h" |
| #include "exec/address-spaces.h" |
| |
| //#define DEBUG_PCI |
| #ifdef DEBUG_PCI |
| # define PCI_DPRINTF(format, ...) printf(format, ## __VA_ARGS__) |
| #else |
| # define PCI_DPRINTF(format, ...) do { } while (0) |
| #endif |
| |
| static void pcibus_dev_print(Monitor *mon, DeviceState *dev, int indent); |
| static char *pcibus_get_dev_path(DeviceState *dev); |
| static char *pcibus_get_fw_dev_path(DeviceState *dev); |
| static int pcibus_reset(BusState *qbus); |
| |
| static Property pci_props[] = { |
| DEFINE_PROP_PCI_DEVFN("addr", PCIDevice, devfn, -1), |
| DEFINE_PROP_STRING("romfile", PCIDevice, romfile), |
| DEFINE_PROP_UINT32("rombar", PCIDevice, rom_bar, 1), |
| DEFINE_PROP_BIT("multifunction", PCIDevice, cap_present, |
| QEMU_PCI_CAP_MULTIFUNCTION_BITNR, false), |
| DEFINE_PROP_BIT("command_serr_enable", PCIDevice, cap_present, |
| QEMU_PCI_CAP_SERR_BITNR, true), |
| DEFINE_PROP_END_OF_LIST() |
| }; |
| |
| static void pci_bus_class_init(ObjectClass *klass, void *data) |
| { |
| BusClass *k = BUS_CLASS(klass); |
| |
| k->print_dev = pcibus_dev_print; |
| k->get_dev_path = pcibus_get_dev_path; |
| k->get_fw_dev_path = pcibus_get_fw_dev_path; |
| k->reset = pcibus_reset; |
| } |
| |
| static const TypeInfo pci_bus_info = { |
| .name = TYPE_PCI_BUS, |
| .parent = TYPE_BUS, |
| .instance_size = sizeof(PCIBus), |
| .class_init = pci_bus_class_init, |
| }; |
| |
| static PCIBus *pci_find_bus_nr(PCIBus *bus, int bus_num); |
| static void pci_update_mappings(PCIDevice *d); |
| static void pci_set_irq(void *opaque, int irq_num, int level); |
| static int pci_add_option_rom(PCIDevice *pdev, bool is_default_rom); |
| static void pci_del_option_rom(PCIDevice *pdev); |
| |
| static uint16_t pci_default_sub_vendor_id = PCI_SUBVENDOR_ID_REDHAT_QUMRANET; |
| static uint16_t pci_default_sub_device_id = PCI_SUBDEVICE_ID_QEMU; |
| |
| struct PCIHostBus { |
| int domain; |
| struct PCIBus *bus; |
| QLIST_ENTRY(PCIHostBus) next; |
| }; |
| static QLIST_HEAD(, PCIHostBus) host_buses; |
| |
| static const VMStateDescription vmstate_pcibus = { |
| .name = "PCIBUS", |
| .version_id = 1, |
| .minimum_version_id = 1, |
| .minimum_version_id_old = 1, |
| .fields = (VMStateField []) { |
| VMSTATE_INT32_EQUAL(nirq, PCIBus), |
| VMSTATE_VARRAY_INT32(irq_count, PCIBus, nirq, 0, vmstate_info_int32, int32_t), |
| VMSTATE_END_OF_LIST() |
| } |
| }; |
| static int pci_bar(PCIDevice *d, int reg) |
| { |
| uint8_t type; |
| |
| if (reg != PCI_ROM_SLOT) |
| return PCI_BASE_ADDRESS_0 + reg * 4; |
| |
| type = d->config[PCI_HEADER_TYPE] & ~PCI_HEADER_TYPE_MULTI_FUNCTION; |
| return type == PCI_HEADER_TYPE_BRIDGE ? PCI_ROM_ADDRESS1 : PCI_ROM_ADDRESS; |
| } |
| |
| static inline int pci_irq_state(PCIDevice *d, int irq_num) |
| { |
| return (d->irq_state >> irq_num) & 0x1; |
| } |
| |
| static inline void pci_set_irq_state(PCIDevice *d, int irq_num, int level) |
| { |
| d->irq_state &= ~(0x1 << irq_num); |
| d->irq_state |= level << irq_num; |
| } |
| |
| static void pci_change_irq_level(PCIDevice *pci_dev, int irq_num, int change) |
| { |
| PCIBus *bus; |
| for (;;) { |
| bus = pci_dev->bus; |
| irq_num = bus->map_irq(pci_dev, irq_num); |
| if (bus->set_irq) |
| break; |
| pci_dev = bus->parent_dev; |
| } |
| bus->irq_count[irq_num] += change; |
| bus->set_irq(bus->irq_opaque, irq_num, bus->irq_count[irq_num] != 0); |
| } |
| |
| int pci_bus_get_irq_level(PCIBus *bus, int irq_num) |
| { |
| assert(irq_num >= 0); |
| assert(irq_num < bus->nirq); |
| return !!bus->irq_count[irq_num]; |
| } |
| |
| /* Update interrupt status bit in config space on interrupt |
| * state change. */ |
| static void pci_update_irq_status(PCIDevice *dev) |
| { |
| if (dev->irq_state) { |
| dev->config[PCI_STATUS] |= PCI_STATUS_INTERRUPT; |
| } else { |
| dev->config[PCI_STATUS] &= ~PCI_STATUS_INTERRUPT; |
| } |
| } |
| |
| void pci_device_deassert_intx(PCIDevice *dev) |
| { |
| int i; |
| for (i = 0; i < PCI_NUM_PINS; ++i) { |
| qemu_set_irq(dev->irq[i], 0); |
| } |
| } |
| |
| /* |
| * This function is called on #RST and FLR. |
| * FLR if PCI_EXP_DEVCTL_BCR_FLR is set |
| */ |
| void pci_device_reset(PCIDevice *dev) |
| { |
| int r; |
| |
| qdev_reset_all(&dev->qdev); |
| |
| dev->irq_state = 0; |
| pci_update_irq_status(dev); |
| pci_device_deassert_intx(dev); |
| /* Clear all writable bits */ |
| pci_word_test_and_clear_mask(dev->config + PCI_COMMAND, |
| pci_get_word(dev->wmask + PCI_COMMAND) | |
| pci_get_word(dev->w1cmask + PCI_COMMAND)); |
| pci_word_test_and_clear_mask(dev->config + PCI_STATUS, |
| pci_get_word(dev->wmask + PCI_STATUS) | |
| pci_get_word(dev->w1cmask + PCI_STATUS)); |
| dev->config[PCI_CACHE_LINE_SIZE] = 0x0; |
| dev->config[PCI_INTERRUPT_LINE] = 0x0; |
| for (r = 0; r < PCI_NUM_REGIONS; ++r) { |
| PCIIORegion *region = &dev->io_regions[r]; |
| if (!region->size) { |
| continue; |
| } |
| |
| if (!(region->type & PCI_BASE_ADDRESS_SPACE_IO) && |
| region->type & PCI_BASE_ADDRESS_MEM_TYPE_64) { |
| pci_set_quad(dev->config + pci_bar(dev, r), region->type); |
| } else { |
| pci_set_long(dev->config + pci_bar(dev, r), region->type); |
| } |
| } |
| pci_update_mappings(dev); |
| |
| msi_reset(dev); |
| msix_reset(dev); |
| } |
| |
| /* |
| * Trigger pci bus reset under a given bus. |
| * To be called on RST# assert. |
| */ |
| void pci_bus_reset(PCIBus *bus) |
| { |
| int i; |
| |
| for (i = 0; i < bus->nirq; i++) { |
| bus->irq_count[i] = 0; |
| } |
| for (i = 0; i < ARRAY_SIZE(bus->devices); ++i) { |
| if (bus->devices[i]) { |
| pci_device_reset(bus->devices[i]); |
| } |
| } |
| } |
| |
| static int pcibus_reset(BusState *qbus) |
| { |
| pci_bus_reset(DO_UPCAST(PCIBus, qbus, qbus)); |
| |
| /* topology traverse is done by pci_bus_reset(). |
| Tell qbus/qdev walker not to traverse the tree */ |
| return 1; |
| } |
| |
| static void pci_host_bus_register(int domain, PCIBus *bus) |
| { |
| struct PCIHostBus *host; |
| host = g_malloc0(sizeof(*host)); |
| host->domain = domain; |
| host->bus = bus; |
| QLIST_INSERT_HEAD(&host_buses, host, next); |
| } |
| |
| PCIBus *pci_find_root_bus(int domain) |
| { |
| struct PCIHostBus *host; |
| |
| QLIST_FOREACH(host, &host_buses, next) { |
| if (host->domain == domain) { |
| return host->bus; |
| } |
| } |
| |
| return NULL; |
| } |
| |
| int pci_find_domain(const PCIBus *bus) |
| { |
| PCIDevice *d; |
| struct PCIHostBus *host; |
| |
| /* obtain root bus */ |
| while ((d = bus->parent_dev) != NULL) { |
| bus = d->bus; |
| } |
| |
| QLIST_FOREACH(host, &host_buses, next) { |
| if (host->bus == bus) { |
| return host->domain; |
| } |
| } |
| |
| abort(); /* should not be reached */ |
| return -1; |
| } |
| |
| void pci_bus_new_inplace(PCIBus *bus, DeviceState *parent, |
| const char *name, |
| MemoryRegion *address_space_mem, |
| MemoryRegion *address_space_io, |
| uint8_t devfn_min) |
| { |
| qbus_create_inplace(&bus->qbus, TYPE_PCI_BUS, parent, name); |
| assert(PCI_FUNC(devfn_min) == 0); |
| bus->devfn_min = devfn_min; |
| bus->address_space_mem = address_space_mem; |
| bus->address_space_io = address_space_io; |
| |
| /* host bridge */ |
| QLIST_INIT(&bus->child); |
| pci_host_bus_register(0, bus); /* for now only pci domain 0 is supported */ |
| |
| vmstate_register(NULL, -1, &vmstate_pcibus, bus); |
| } |
| |
| PCIBus *pci_bus_new(DeviceState *parent, const char *name, |
| MemoryRegion *address_space_mem, |
| MemoryRegion *address_space_io, |
| uint8_t devfn_min) |
| { |
| PCIBus *bus; |
| |
| bus = g_malloc0(sizeof(*bus)); |
| pci_bus_new_inplace(bus, parent, name, address_space_mem, |
| address_space_io, devfn_min); |
| OBJECT(bus)->free = g_free; |
| return bus; |
| } |
| |
| void pci_bus_irqs(PCIBus *bus, pci_set_irq_fn set_irq, pci_map_irq_fn map_irq, |
| void *irq_opaque, int nirq) |
| { |
| bus->set_irq = set_irq; |
| bus->map_irq = map_irq; |
| bus->irq_opaque = irq_opaque; |
| bus->nirq = nirq; |
| bus->irq_count = g_malloc0(nirq * sizeof(bus->irq_count[0])); |
| } |
| |
| void pci_bus_hotplug(PCIBus *bus, pci_hotplug_fn hotplug, DeviceState *qdev) |
| { |
| bus->qbus.allow_hotplug = 1; |
| bus->hotplug = hotplug; |
| bus->hotplug_qdev = qdev; |
| } |
| |
| PCIBus *pci_register_bus(DeviceState *parent, const char *name, |
| pci_set_irq_fn set_irq, pci_map_irq_fn map_irq, |
| void *irq_opaque, |
| MemoryRegion *address_space_mem, |
| MemoryRegion *address_space_io, |
| uint8_t devfn_min, int nirq) |
| { |
| PCIBus *bus; |
| |
| bus = pci_bus_new(parent, name, address_space_mem, |
| address_space_io, devfn_min); |
| pci_bus_irqs(bus, set_irq, map_irq, irq_opaque, nirq); |
| return bus; |
| } |
| |
| int pci_bus_num(PCIBus *s) |
| { |
| if (!s->parent_dev) |
| return 0; /* pci host bridge */ |
| return s->parent_dev->config[PCI_SECONDARY_BUS]; |
| } |
| |
| static int get_pci_config_device(QEMUFile *f, void *pv, size_t size) |
| { |
| PCIDevice *s = container_of(pv, PCIDevice, config); |
| uint8_t *config; |
| int i; |
| |
| assert(size == pci_config_size(s)); |
| config = g_malloc(size); |
| |
| qemu_get_buffer(f, config, size); |
| for (i = 0; i < size; ++i) { |
| if ((config[i] ^ s->config[i]) & |
| s->cmask[i] & ~s->wmask[i] & ~s->w1cmask[i]) { |
| g_free(config); |
| return -EINVAL; |
| } |
| } |
| memcpy(s->config, config, size); |
| |
| pci_update_mappings(s); |
| |
| memory_region_set_enabled(&s->bus_master_enable_region, |
| pci_get_word(s->config + PCI_COMMAND) |
| & PCI_COMMAND_MASTER); |
| |
| g_free(config); |
| return 0; |
| } |
| |
| /* just put buffer */ |
| static void put_pci_config_device(QEMUFile *f, void *pv, size_t size) |
| { |
| const uint8_t **v = pv; |
| assert(size == pci_config_size(container_of(pv, PCIDevice, config))); |
| qemu_put_buffer(f, *v, size); |
| } |
| |
| static VMStateInfo vmstate_info_pci_config = { |
| .name = "pci config", |
| .get = get_pci_config_device, |
| .put = put_pci_config_device, |
| }; |
| |
| static int get_pci_irq_state(QEMUFile *f, void *pv, size_t size) |
| { |
| PCIDevice *s = container_of(pv, PCIDevice, irq_state); |
| uint32_t irq_state[PCI_NUM_PINS]; |
| int i; |
| for (i = 0; i < PCI_NUM_PINS; ++i) { |
| irq_state[i] = qemu_get_be32(f); |
| if (irq_state[i] != 0x1 && irq_state[i] != 0) { |
| fprintf(stderr, "irq state %d: must be 0 or 1.\n", |
| irq_state[i]); |
| return -EINVAL; |
| } |
| } |
| |
| for (i = 0; i < PCI_NUM_PINS; ++i) { |
| pci_set_irq_state(s, i, irq_state[i]); |
| } |
| |
| return 0; |
| } |
| |
| static void put_pci_irq_state(QEMUFile *f, void *pv, size_t size) |
| { |
| int i; |
| PCIDevice *s = container_of(pv, PCIDevice, irq_state); |
| |
| for (i = 0; i < PCI_NUM_PINS; ++i) { |
| qemu_put_be32(f, pci_irq_state(s, i)); |
| } |
| } |
| |
| static VMStateInfo vmstate_info_pci_irq_state = { |
| .name = "pci irq state", |
| .get = get_pci_irq_state, |
| .put = put_pci_irq_state, |
| }; |
| |
| const VMStateDescription vmstate_pci_device = { |
| .name = "PCIDevice", |
| .version_id = 2, |
| .minimum_version_id = 1, |
| .minimum_version_id_old = 1, |
| .fields = (VMStateField []) { |
| VMSTATE_INT32_LE(version_id, PCIDevice), |
| VMSTATE_BUFFER_UNSAFE_INFO(config, PCIDevice, 0, |
| vmstate_info_pci_config, |
| PCI_CONFIG_SPACE_SIZE), |
| VMSTATE_BUFFER_UNSAFE_INFO(irq_state, PCIDevice, 2, |
| vmstate_info_pci_irq_state, |
| PCI_NUM_PINS * sizeof(int32_t)), |
| VMSTATE_END_OF_LIST() |
| } |
| }; |
| |
| const VMStateDescription vmstate_pcie_device = { |
| .name = "PCIEDevice", |
| .version_id = 2, |
| .minimum_version_id = 1, |
| .minimum_version_id_old = 1, |
| .fields = (VMStateField []) { |
| VMSTATE_INT32_LE(version_id, PCIDevice), |
| VMSTATE_BUFFER_UNSAFE_INFO(config, PCIDevice, 0, |
| vmstate_info_pci_config, |
| PCIE_CONFIG_SPACE_SIZE), |
| VMSTATE_BUFFER_UNSAFE_INFO(irq_state, PCIDevice, 2, |
| vmstate_info_pci_irq_state, |
| PCI_NUM_PINS * sizeof(int32_t)), |
| VMSTATE_END_OF_LIST() |
| } |
| }; |
| |
| static inline const VMStateDescription *pci_get_vmstate(PCIDevice *s) |
| { |
| return pci_is_express(s) ? &vmstate_pcie_device : &vmstate_pci_device; |
| } |
| |
| void pci_device_save(PCIDevice *s, QEMUFile *f) |
| { |
| /* Clear interrupt status bit: it is implicit |
| * in irq_state which we are saving. |
| * This makes us compatible with old devices |
| * which never set or clear this bit. */ |
| s->config[PCI_STATUS] &= ~PCI_STATUS_INTERRUPT; |
| vmstate_save_state(f, pci_get_vmstate(s), s); |
| /* Restore the interrupt status bit. */ |
| pci_update_irq_status(s); |
| } |
| |
| int pci_device_load(PCIDevice *s, QEMUFile *f) |
| { |
| int ret; |
| ret = vmstate_load_state(f, pci_get_vmstate(s), s, s->version_id); |
| /* Restore the interrupt status bit. */ |
| pci_update_irq_status(s); |
| return ret; |
| } |
| |
| static void pci_set_default_subsystem_id(PCIDevice *pci_dev) |
| { |
| pci_set_word(pci_dev->config + PCI_SUBSYSTEM_VENDOR_ID, |
| pci_default_sub_vendor_id); |
| pci_set_word(pci_dev->config + PCI_SUBSYSTEM_ID, |
| pci_default_sub_device_id); |
| } |
| |
| /* |
| * Parse [[<domain>:]<bus>:]<slot>, return -1 on error if funcp == NULL |
| * [[<domain>:]<bus>:]<slot>.<func>, return -1 on error |
| */ |
| static int pci_parse_devaddr(const char *addr, int *domp, int *busp, |
| unsigned int *slotp, unsigned int *funcp) |
| { |
| const char *p; |
| char *e; |
| unsigned long val; |
| unsigned long dom = 0, bus = 0; |
| unsigned int slot = 0; |
| unsigned int func = 0; |
| |
| p = addr; |
| val = strtoul(p, &e, 16); |
| if (e == p) |
| return -1; |
| if (*e == ':') { |
| bus = val; |
| p = e + 1; |
| val = strtoul(p, &e, 16); |
| if (e == p) |
| return -1; |
| if (*e == ':') { |
| dom = bus; |
| bus = val; |
| p = e + 1; |
| val = strtoul(p, &e, 16); |
| if (e == p) |
| return -1; |
| } |
| } |
| |
| slot = val; |
| |
| if (funcp != NULL) { |
| if (*e != '.') |
| return -1; |
| |
| p = e + 1; |
| val = strtoul(p, &e, 16); |
| if (e == p) |
| return -1; |
| |
| func = val; |
| } |
| |
| /* if funcp == NULL func is 0 */ |
| if (dom > 0xffff || bus > 0xff || slot > 0x1f || func > 7) |
| return -1; |
| |
| if (*e) |
| return -1; |
| |
| *domp = dom; |
| *busp = bus; |
| *slotp = slot; |
| if (funcp != NULL) |
| *funcp = func; |
| return 0; |
| } |
| |
| int pci_read_devaddr(Monitor *mon, const char *addr, int *domp, int *busp, |
| unsigned *slotp) |
| { |
| /* strip legacy tag */ |
| if (!strncmp(addr, "pci_addr=", 9)) { |
| addr += 9; |
| } |
| if (pci_parse_devaddr(addr, domp, busp, slotp, NULL)) { |
| monitor_printf(mon, "Invalid pci address\n"); |
| return -1; |
| } |
| return 0; |
| } |
| |
| PCIBus *pci_get_bus_devfn(int *devfnp, const char *devaddr) |
| { |
| int dom, bus; |
| unsigned slot; |
| |
| if (!devaddr) { |
| *devfnp = -1; |
| return pci_find_bus_nr(pci_find_root_bus(0), 0); |
| } |
| |
| if (pci_parse_devaddr(devaddr, &dom, &bus, &slot, NULL) < 0) { |
| return NULL; |
| } |
| |
| *devfnp = PCI_DEVFN(slot, 0); |
| return pci_find_bus_nr(pci_find_root_bus(dom), bus); |
| } |
| |
| static void pci_init_cmask(PCIDevice *dev) |
| { |
| pci_set_word(dev->cmask + PCI_VENDOR_ID, 0xffff); |
| pci_set_word(dev->cmask + PCI_DEVICE_ID, 0xffff); |
| dev->cmask[PCI_STATUS] = PCI_STATUS_CAP_LIST; |
| dev->cmask[PCI_REVISION_ID] = 0xff; |
| dev->cmask[PCI_CLASS_PROG] = 0xff; |
| pci_set_word(dev->cmask + PCI_CLASS_DEVICE, 0xffff); |
| dev->cmask[PCI_HEADER_TYPE] = 0xff; |
| dev->cmask[PCI_CAPABILITY_LIST] = 0xff; |
| } |
| |
| static void pci_init_wmask(PCIDevice *dev) |
| { |
| int config_size = pci_config_size(dev); |
| |
| dev->wmask[PCI_CACHE_LINE_SIZE] = 0xff; |
| dev->wmask[PCI_INTERRUPT_LINE] = 0xff; |
| pci_set_word(dev->wmask + PCI_COMMAND, |
| PCI_COMMAND_IO | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER | |
| PCI_COMMAND_INTX_DISABLE); |
| if (dev->cap_present & QEMU_PCI_CAP_SERR) { |
| pci_word_test_and_set_mask(dev->wmask + PCI_COMMAND, PCI_COMMAND_SERR); |
| } |
| |
| memset(dev->wmask + PCI_CONFIG_HEADER_SIZE, 0xff, |
| config_size - PCI_CONFIG_HEADER_SIZE); |
| } |
| |
| static void pci_init_w1cmask(PCIDevice *dev) |
| { |
| /* |
| * Note: It's okay to set w1cmask even for readonly bits as |
| * long as their value is hardwired to 0. |
| */ |
| pci_set_word(dev->w1cmask + PCI_STATUS, |
| PCI_STATUS_PARITY | PCI_STATUS_SIG_TARGET_ABORT | |
| PCI_STATUS_REC_TARGET_ABORT | PCI_STATUS_REC_MASTER_ABORT | |
| PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_DETECTED_PARITY); |
| } |
| |
| static void pci_init_mask_bridge(PCIDevice *d) |
| { |
| /* PCI_PRIMARY_BUS, PCI_SECONDARY_BUS, PCI_SUBORDINATE_BUS and |
| PCI_SEC_LETENCY_TIMER */ |
| memset(d->wmask + PCI_PRIMARY_BUS, 0xff, 4); |
| |
| /* base and limit */ |
| d->wmask[PCI_IO_BASE] = PCI_IO_RANGE_MASK & 0xff; |
| d->wmask[PCI_IO_LIMIT] = PCI_IO_RANGE_MASK & 0xff; |
| pci_set_word(d->wmask + PCI_MEMORY_BASE, |
| PCI_MEMORY_RANGE_MASK & 0xffff); |
| pci_set_word(d->wmask + PCI_MEMORY_LIMIT, |
| PCI_MEMORY_RANGE_MASK & 0xffff); |
| pci_set_word(d->wmask + PCI_PREF_MEMORY_BASE, |
| PCI_PREF_RANGE_MASK & 0xffff); |
| pci_set_word(d->wmask + PCI_PREF_MEMORY_LIMIT, |
| PCI_PREF_RANGE_MASK & 0xffff); |
| |
| /* PCI_PREF_BASE_UPPER32 and PCI_PREF_LIMIT_UPPER32 */ |
| memset(d->wmask + PCI_PREF_BASE_UPPER32, 0xff, 8); |
| |
| /* Supported memory and i/o types */ |
| d->config[PCI_IO_BASE] |= PCI_IO_RANGE_TYPE_16; |
| d->config[PCI_IO_LIMIT] |= PCI_IO_RANGE_TYPE_16; |
| pci_word_test_and_set_mask(d->config + PCI_PREF_MEMORY_BASE, |
| PCI_PREF_RANGE_TYPE_64); |
| pci_word_test_and_set_mask(d->config + PCI_PREF_MEMORY_LIMIT, |
| PCI_PREF_RANGE_TYPE_64); |
| |
| /* TODO: add this define to pci_regs.h in linux and then in qemu. */ |
| #define PCI_BRIDGE_CTL_VGA_16BIT 0x10 /* VGA 16-bit decode */ |
| #define PCI_BRIDGE_CTL_DISCARD 0x100 /* Primary discard timer */ |
| #define PCI_BRIDGE_CTL_SEC_DISCARD 0x200 /* Secondary discard timer */ |
| #define PCI_BRIDGE_CTL_DISCARD_STATUS 0x400 /* Discard timer status */ |
| #define PCI_BRIDGE_CTL_DISCARD_SERR 0x800 /* Discard timer SERR# enable */ |
| pci_set_word(d->wmask + PCI_BRIDGE_CONTROL, |
| PCI_BRIDGE_CTL_PARITY | |
| PCI_BRIDGE_CTL_SERR | |
| PCI_BRIDGE_CTL_ISA | |
| PCI_BRIDGE_CTL_VGA | |
| PCI_BRIDGE_CTL_VGA_16BIT | |
| PCI_BRIDGE_CTL_MASTER_ABORT | |
| PCI_BRIDGE_CTL_BUS_RESET | |
| PCI_BRIDGE_CTL_FAST_BACK | |
| PCI_BRIDGE_CTL_DISCARD | |
| PCI_BRIDGE_CTL_SEC_DISCARD | |
| PCI_BRIDGE_CTL_DISCARD_SERR); |
| /* Below does not do anything as we never set this bit, put here for |
| * completeness. */ |
| pci_set_word(d->w1cmask + PCI_BRIDGE_CONTROL, |
| PCI_BRIDGE_CTL_DISCARD_STATUS); |
| d->cmask[PCI_IO_BASE] |= PCI_IO_RANGE_TYPE_MASK; |
| d->cmask[PCI_IO_LIMIT] |= PCI_IO_RANGE_TYPE_MASK; |
| pci_word_test_and_set_mask(d->cmask + PCI_PREF_MEMORY_BASE, |
| PCI_PREF_RANGE_TYPE_MASK); |
| pci_word_test_and_set_mask(d->cmask + PCI_PREF_MEMORY_LIMIT, |
| PCI_PREF_RANGE_TYPE_MASK); |
| } |
| |
| static int pci_init_multifunction(PCIBus *bus, PCIDevice *dev) |
| { |
| uint8_t slot = PCI_SLOT(dev->devfn); |
| uint8_t func; |
| |
| if (dev->cap_present & QEMU_PCI_CAP_MULTIFUNCTION) { |
| dev->config[PCI_HEADER_TYPE] |= PCI_HEADER_TYPE_MULTI_FUNCTION; |
| } |
| |
| /* |
| * multifunction bit is interpreted in two ways as follows. |
| * - all functions must set the bit to 1. |
| * Example: Intel X53 |
| * - function 0 must set the bit, but the rest function (> 0) |
| * is allowed to leave the bit to 0. |
| * Example: PIIX3(also in qemu), PIIX4(also in qemu), ICH10, |
| * |
| * So OS (at least Linux) checks the bit of only function 0, |
| * and doesn't see the bit of function > 0. |
| * |
| * The below check allows both interpretation. |
| */ |
| if (PCI_FUNC(dev->devfn)) { |
| PCIDevice *f0 = bus->devices[PCI_DEVFN(slot, 0)]; |
| if (f0 && !(f0->cap_present & QEMU_PCI_CAP_MULTIFUNCTION)) { |
| /* function 0 should set multifunction bit */ |
| error_report("PCI: single function device can't be populated " |
| "in function %x.%x", slot, PCI_FUNC(dev->devfn)); |
| return -1; |
| } |
| return 0; |
| } |
| |
| if (dev->cap_present & QEMU_PCI_CAP_MULTIFUNCTION) { |
| return 0; |
| } |
| /* function 0 indicates single function, so function > 0 must be NULL */ |
| for (func = 1; func < PCI_FUNC_MAX; ++func) { |
| if (bus->devices[PCI_DEVFN(slot, func)]) { |
| error_report("PCI: %x.0 indicates single function, " |
| "but %x.%x is already populated.", |
| slot, slot, func); |
| return -1; |
| } |
| } |
| return 0; |
| } |
| |
| static void pci_config_alloc(PCIDevice *pci_dev) |
| { |
| int config_size = pci_config_size(pci_dev); |
| |
| pci_dev->config = g_malloc0(config_size); |
| pci_dev->cmask = g_malloc0(config_size); |
| pci_dev->wmask = g_malloc0(config_size); |
| pci_dev->w1cmask = g_malloc0(config_size); |
| pci_dev->used = g_malloc0(config_size); |
| } |
| |
| static void pci_config_free(PCIDevice *pci_dev) |
| { |
| g_free(pci_dev->config); |
| g_free(pci_dev->cmask); |
| g_free(pci_dev->wmask); |
| g_free(pci_dev->w1cmask); |
| g_free(pci_dev->used); |
| } |
| |
| /* -1 for devfn means auto assign */ |
| static PCIDevice *do_pci_register_device(PCIDevice *pci_dev, PCIBus *bus, |
| const char *name, int devfn) |
| { |
| PCIDeviceClass *pc = PCI_DEVICE_GET_CLASS(pci_dev); |
| PCIConfigReadFunc *config_read = pc->config_read; |
| PCIConfigWriteFunc *config_write = pc->config_write; |
| |
| if (devfn < 0) { |
| for(devfn = bus->devfn_min ; devfn < ARRAY_SIZE(bus->devices); |
| devfn += PCI_FUNC_MAX) { |
| if (!bus->devices[devfn]) |
| goto found; |
| } |
| error_report("PCI: no slot/function available for %s, all in use", name); |
| return NULL; |
| found: ; |
| } else if (bus->devices[devfn]) { |
| error_report("PCI: slot %d function %d not available for %s, in use by %s", |
| PCI_SLOT(devfn), PCI_FUNC(devfn), name, bus->devices[devfn]->name); |
| return NULL; |
| } |
| pci_dev->bus = bus; |
| if (bus->dma_context_fn) { |
| pci_dev->dma = bus->dma_context_fn(bus, bus->dma_context_opaque, devfn); |
| } else { |
| /* FIXME: Make dma_context_fn use MemoryRegions instead, so this path is |
| * taken unconditionally */ |
| /* FIXME: inherit memory region from bus creator */ |
| memory_region_init_alias(&pci_dev->bus_master_enable_region, "bus master", |
| get_system_memory(), 0, |
| memory_region_size(get_system_memory())); |
| memory_region_set_enabled(&pci_dev->bus_master_enable_region, false); |
| address_space_init(&pci_dev->bus_master_as, &pci_dev->bus_master_enable_region); |
| pci_dev->dma = g_new(DMAContext, 1); |
| dma_context_init(pci_dev->dma, &pci_dev->bus_master_as, NULL, NULL, NULL); |
| } |
| pci_dev->devfn = devfn; |
| pstrcpy(pci_dev->name, sizeof(pci_dev->name), name); |
| pci_dev->irq_state = 0; |
| pci_config_alloc(pci_dev); |
| |
| pci_config_set_vendor_id(pci_dev->config, pc->vendor_id); |
| pci_config_set_device_id(pci_dev->config, pc->device_id); |
| pci_config_set_revision(pci_dev->config, pc->revision); |
| pci_config_set_class(pci_dev->config, pc->class_id); |
| |
| if (!pc->is_bridge) { |
| if (pc->subsystem_vendor_id || pc->subsystem_id) { |
| pci_set_word(pci_dev->config + PCI_SUBSYSTEM_VENDOR_ID, |
| pc->subsystem_vendor_id); |
| pci_set_word(pci_dev->config + PCI_SUBSYSTEM_ID, |
| pc->subsystem_id); |
| } else { |
| pci_set_default_subsystem_id(pci_dev); |
| } |
| } else { |
| /* subsystem_vendor_id/subsystem_id are only for header type 0 */ |
| assert(!pc->subsystem_vendor_id); |
| assert(!pc->subsystem_id); |
| } |
| pci_init_cmask(pci_dev); |
| pci_init_wmask(pci_dev); |
| pci_init_w1cmask(pci_dev); |
| if (pc->is_bridge) { |
| pci_init_mask_bridge(pci_dev); |
| } |
| if (pci_init_multifunction(bus, pci_dev)) { |
| pci_config_free(pci_dev); |
| return NULL; |
| } |
| |
| if (!config_read) |
| config_read = pci_default_read_config; |
| if (!config_write) |
| config_write = pci_default_write_config; |
| pci_dev->config_read = config_read; |
| pci_dev->config_write = config_write; |
| bus->devices[devfn] = pci_dev; |
| pci_dev->irq = qemu_allocate_irqs(pci_set_irq, pci_dev, PCI_NUM_PINS); |
| pci_dev->version_id = 2; /* Current pci device vmstate version */ |
| return pci_dev; |
| } |
| |
| static void do_pci_unregister_device(PCIDevice *pci_dev) |
| { |
| qemu_free_irqs(pci_dev->irq); |
| pci_dev->bus->devices[pci_dev->devfn] = NULL; |
| pci_config_free(pci_dev); |
| |
| if (!pci_dev->bus->dma_context_fn) { |
| address_space_destroy(&pci_dev->bus_master_as); |
| memory_region_destroy(&pci_dev->bus_master_enable_region); |
| g_free(pci_dev->dma); |
| pci_dev->dma = NULL; |
| } |
| } |
| |
| static void pci_unregister_io_regions(PCIDevice *pci_dev) |
| { |
| PCIIORegion *r; |
| int i; |
| |
| for(i = 0; i < PCI_NUM_REGIONS; i++) { |
| r = &pci_dev->io_regions[i]; |
| if (!r->size || r->addr == PCI_BAR_UNMAPPED) |
| continue; |
| memory_region_del_subregion(r->address_space, r->memory); |
| } |
| } |
| |
| static int pci_unregister_device(DeviceState *dev) |
| { |
| PCIDevice *pci_dev = PCI_DEVICE(dev); |
| PCIDeviceClass *pc = PCI_DEVICE_GET_CLASS(pci_dev); |
| |
| pci_unregister_io_regions(pci_dev); |
| pci_del_option_rom(pci_dev); |
| |
| if (pc->exit) { |
| pc->exit(pci_dev); |
| } |
| |
| do_pci_unregister_device(pci_dev); |
| return 0; |
| } |
| |
| void pci_register_bar(PCIDevice *pci_dev, int region_num, |
| uint8_t type, MemoryRegion *memory) |
| { |
| PCIIORegion *r; |
| uint32_t addr; |
| uint64_t wmask; |
| pcibus_t size = memory_region_size(memory); |
| |
| assert(region_num >= 0); |
| assert(region_num < PCI_NUM_REGIONS); |
| if (size & (size-1)) { |
| fprintf(stderr, "ERROR: PCI region size must be pow2 " |
| "type=0x%x, size=0x%"FMT_PCIBUS"\n", type, size); |
| exit(1); |
| } |
| |
| r = &pci_dev->io_regions[region_num]; |
| r->addr = PCI_BAR_UNMAPPED; |
| r->size = size; |
| r->type = type; |
| r->memory = NULL; |
| |
| wmask = ~(size - 1); |
| addr = pci_bar(pci_dev, region_num); |
| if (region_num == PCI_ROM_SLOT) { |
| /* ROM enable bit is writable */ |
| wmask |= PCI_ROM_ADDRESS_ENABLE; |
| } |
| pci_set_long(pci_dev->config + addr, type); |
| if (!(r->type & PCI_BASE_ADDRESS_SPACE_IO) && |
| r->type & PCI_BASE_ADDRESS_MEM_TYPE_64) { |
| pci_set_quad(pci_dev->wmask + addr, wmask); |
| pci_set_quad(pci_dev->cmask + addr, ~0ULL); |
| } else { |
| pci_set_long(pci_dev->wmask + addr, wmask & 0xffffffff); |
| pci_set_long(pci_dev->cmask + addr, 0xffffffff); |
| } |
| pci_dev->io_regions[region_num].memory = memory; |
| pci_dev->io_regions[region_num].address_space |
| = type & PCI_BASE_ADDRESS_SPACE_IO |
| ? pci_dev->bus->address_space_io |
| : pci_dev->bus->address_space_mem; |
| } |
| |
| pcibus_t pci_get_bar_addr(PCIDevice *pci_dev, int region_num) |
| { |
| return pci_dev->io_regions[region_num].addr; |
| } |
| |
| static pcibus_t pci_bar_address(PCIDevice *d, |
| int reg, uint8_t type, pcibus_t size) |
| { |
| pcibus_t new_addr, last_addr; |
| int bar = pci_bar(d, reg); |
| uint16_t cmd = pci_get_word(d->config + PCI_COMMAND); |
| |
| if (type & PCI_BASE_ADDRESS_SPACE_IO) { |
| if (!(cmd & PCI_COMMAND_IO)) { |
| return PCI_BAR_UNMAPPED; |
| } |
| new_addr = pci_get_long(d->config + bar) & ~(size - 1); |
| last_addr = new_addr + size - 1; |
| /* NOTE: we have only 64K ioports on PC */ |
| if (last_addr <= new_addr || new_addr == 0 || last_addr > UINT16_MAX) { |
| return PCI_BAR_UNMAPPED; |
| } |
| return new_addr; |
| } |
| |
| if (!(cmd & PCI_COMMAND_MEMORY)) { |
| return PCI_BAR_UNMAPPED; |
| } |
| if (type & PCI_BASE_ADDRESS_MEM_TYPE_64) { |
| new_addr = pci_get_quad(d->config + bar); |
| } else { |
| new_addr = pci_get_long(d->config + bar); |
| } |
| /* the ROM slot has a specific enable bit */ |
| if (reg == PCI_ROM_SLOT && !(new_addr & PCI_ROM_ADDRESS_ENABLE)) { |
| return PCI_BAR_UNMAPPED; |
| } |
| new_addr &= ~(size - 1); |
| last_addr = new_addr + size - 1; |
| /* NOTE: we do not support wrapping */ |
| /* XXX: as we cannot support really dynamic |
| mappings, we handle specific values as invalid |
| mappings. */ |
| if (last_addr <= new_addr || new_addr == 0 || |
| last_addr == PCI_BAR_UNMAPPED) { |
| return PCI_BAR_UNMAPPED; |
| } |
| |
| /* Now pcibus_t is 64bit. |
| * Check if 32 bit BAR wraps around explicitly. |
| * Without this, PC ide doesn't work well. |
| * TODO: remove this work around. |
| */ |
| if (!(type & PCI_BASE_ADDRESS_MEM_TYPE_64) && last_addr >= UINT32_MAX) { |
| return PCI_BAR_UNMAPPED; |
| } |
| |
| /* |
| * OS is allowed to set BAR beyond its addressable |
| * bits. For example, 32 bit OS can set 64bit bar |
| * to >4G. Check it. TODO: we might need to support |
| * it in the future for e.g. PAE. |
| */ |
| if (last_addr >= HWADDR_MAX) { |
| return PCI_BAR_UNMAPPED; |
| } |
| |
| return new_addr; |
| } |
| |
| static void pci_update_mappings(PCIDevice *d) |
| { |
| PCIIORegion *r; |
| int i; |
| pcibus_t new_addr; |
| |
| for(i = 0; i < PCI_NUM_REGIONS; i++) { |
| r = &d->io_regions[i]; |
| |
| /* this region isn't registered */ |
| if (!r->size) |
| continue; |
| |
| new_addr = pci_bar_address(d, i, r->type, r->size); |
| |
| /* This bar isn't changed */ |
| if (new_addr == r->addr) |
| continue; |
| |
| /* now do the real mapping */ |
| if (r->addr != PCI_BAR_UNMAPPED) { |
| memory_region_del_subregion(r->address_space, r->memory); |
| } |
| r->addr = new_addr; |
| if (r->addr != PCI_BAR_UNMAPPED) { |
| memory_region_add_subregion_overlap(r->address_space, |
| r->addr, r->memory, 1); |
| } |
| } |
| } |
| |
| static inline int pci_irq_disabled(PCIDevice *d) |
| { |
| return pci_get_word(d->config + PCI_COMMAND) & PCI_COMMAND_INTX_DISABLE; |
| } |
| |
| /* Called after interrupt disabled field update in config space, |
| * assert/deassert interrupts if necessary. |
| * Gets original interrupt disable bit value (before update). */ |
| static void pci_update_irq_disabled(PCIDevice *d, int was_irq_disabled) |
| { |
| int i, disabled = pci_irq_disabled(d); |
| if (disabled == was_irq_disabled) |
| return; |
| for (i = 0; i < PCI_NUM_PINS; ++i) { |
| int state = pci_irq_state(d, i); |
| pci_change_irq_level(d, i, disabled ? -state : state); |
| } |
| } |
| |
| uint32_t pci_default_read_config(PCIDevice *d, |
| uint32_t address, int len) |
| { |
| uint32_t val = 0; |
| |
| memcpy(&val, d->config + address, len); |
| return le32_to_cpu(val); |
| } |
| |
| void pci_default_write_config(PCIDevice *d, uint32_t addr, uint32_t val, int l) |
| { |
| int i, was_irq_disabled = pci_irq_disabled(d); |
| |
| for (i = 0; i < l; val >>= 8, ++i) { |
| uint8_t wmask = d->wmask[addr + i]; |
| uint8_t w1cmask = d->w1cmask[addr + i]; |
| assert(!(wmask & w1cmask)); |
| d->config[addr + i] = (d->config[addr + i] & ~wmask) | (val & wmask); |
| d->config[addr + i] &= ~(val & w1cmask); /* W1C: Write 1 to Clear */ |
| } |
| if (ranges_overlap(addr, l, PCI_BASE_ADDRESS_0, 24) || |
| ranges_overlap(addr, l, PCI_ROM_ADDRESS, 4) || |
| ranges_overlap(addr, l, PCI_ROM_ADDRESS1, 4) || |
| range_covers_byte(addr, l, PCI_COMMAND)) |
| pci_update_mappings(d); |
| |
| if (range_covers_byte(addr, l, PCI_COMMAND)) { |
| pci_update_irq_disabled(d, was_irq_disabled); |
| memory_region_set_enabled(&d->bus_master_enable_region, |
| pci_get_word(d->config + PCI_COMMAND) |
| & PCI_COMMAND_MASTER); |
| } |
| |
| msi_write_config(d, addr, val, l); |
| msix_write_config(d, addr, val, l); |
| } |
| |
| /***********************************************************/ |
| /* generic PCI irq support */ |
| |
| /* 0 <= irq_num <= 3. level must be 0 or 1 */ |
| static void pci_set_irq(void *opaque, int irq_num, int level) |
| { |
| PCIDevice *pci_dev = opaque; |
| int change; |
| |
| change = level - pci_irq_state(pci_dev, irq_num); |
| if (!change) |
| return; |
| |
| pci_set_irq_state(pci_dev, irq_num, level); |
| pci_update_irq_status(pci_dev); |
| if (pci_irq_disabled(pci_dev)) |
| return; |
| pci_change_irq_level(pci_dev, irq_num, change); |
| } |
| |
| /* Special hooks used by device assignment */ |
| void pci_bus_set_route_irq_fn(PCIBus *bus, pci_route_irq_fn route_intx_to_irq) |
| { |
| assert(!bus->parent_dev); |
| bus->route_intx_to_irq = route_intx_to_irq; |
| } |
| |
| PCIINTxRoute pci_device_route_intx_to_irq(PCIDevice *dev, int pin) |
| { |
| PCIBus *bus; |
| |
| do { |
| bus = dev->bus; |
| pin = bus->map_irq(dev, pin); |
| dev = bus->parent_dev; |
| } while (dev); |
| |
| if (!bus->route_intx_to_irq) { |
| error_report("PCI: Bug - unimplemented PCI INTx routing (%s)\n", |
| object_get_typename(OBJECT(bus->qbus.parent))); |
| return (PCIINTxRoute) { PCI_INTX_DISABLED, -1 }; |
| } |
| |
| return bus->route_intx_to_irq(bus->irq_opaque, pin); |
| } |
| |
| bool pci_intx_route_changed(PCIINTxRoute *old, PCIINTxRoute *new) |
| { |
| return old->mode != new->mode || old->irq != new->irq; |
| } |
| |
| void pci_bus_fire_intx_routing_notifier(PCIBus *bus) |
| { |
| PCIDevice *dev; |
| PCIBus *sec; |
| int i; |
| |
| for (i = 0; i < ARRAY_SIZE(bus->devices); ++i) { |
| dev = bus->devices[i]; |
| if (dev && dev->intx_routing_notifier) { |
| dev->intx_routing_notifier(dev); |
| } |
| QLIST_FOREACH(sec, &bus->child, sibling) { |
| pci_bus_fire_intx_routing_notifier(sec); |
| } |
| } |
| } |
| |
| void pci_device_set_intx_routing_notifier(PCIDevice *dev, |
| PCIINTxRoutingNotifier notifier) |
| { |
| dev->intx_routing_notifier = notifier; |
| } |
| |
| /* |
| * PCI-to-PCI bridge specification |
| * 9.1: Interrupt routing. Table 9-1 |
| * |
| * the PCI Express Base Specification, Revision 2.1 |
| * 2.2.8.1: INTx interrutp signaling - Rules |
| * the Implementation Note |
| * Table 2-20 |
| */ |
| /* |
| * 0 <= pin <= 3 0 = INTA, 1 = INTB, 2 = INTC, 3 = INTD |
| * 0-origin unlike PCI interrupt pin register. |
| */ |
| int pci_swizzle_map_irq_fn(PCIDevice *pci_dev, int pin) |
| { |
| return (pin + PCI_SLOT(pci_dev->devfn)) % PCI_NUM_PINS; |
| } |
| |
| /***********************************************************/ |
| /* monitor info on PCI */ |
| |
| typedef struct { |
| uint16_t class; |
| const char *desc; |
| const char *fw_name; |
| uint16_t fw_ign_bits; |
| } pci_class_desc; |
| |
| static const pci_class_desc pci_class_descriptions[] = |
| { |
| { 0x0001, "VGA controller", "display"}, |
| { 0x0100, "SCSI controller", "scsi"}, |
| { 0x0101, "IDE controller", "ide"}, |
| { 0x0102, "Floppy controller", "fdc"}, |
| { 0x0103, "IPI controller", "ipi"}, |
| { 0x0104, "RAID controller", "raid"}, |
| { 0x0106, "SATA controller"}, |
| { 0x0107, "SAS controller"}, |
| { 0x0180, "Storage controller"}, |
| { 0x0200, "Ethernet controller", "ethernet"}, |
| { 0x0201, "Token Ring controller", "token-ring"}, |
| { 0x0202, "FDDI controller", "fddi"}, |
| { 0x0203, "ATM controller", "atm"}, |
| { 0x0280, "Network controller"}, |
| { 0x0300, "VGA controller", "display", 0x00ff}, |
| { 0x0301, "XGA controller"}, |
| { 0x0302, "3D controller"}, |
| { 0x0380, "Display controller"}, |
| { 0x0400, "Video controller", "video"}, |
| { 0x0401, "Audio controller", "sound"}, |
| { 0x0402, "Phone"}, |
| { 0x0403, "Audio controller", "sound"}, |
| { 0x0480, "Multimedia controller"}, |
| { 0x0500, "RAM controller", "memory"}, |
| { 0x0501, "Flash controller", "flash"}, |
| { 0x0580, "Memory controller"}, |
| { 0x0600, "Host bridge", "host"}, |
| { 0x0601, "ISA bridge", "isa"}, |
| { 0x0602, "EISA bridge", "eisa"}, |
| { 0x0603, "MC bridge", "mca"}, |
| { 0x0604, "PCI bridge", "pci"}, |
| { 0x0605, "PCMCIA bridge", "pcmcia"}, |
| { 0x0606, "NUBUS bridge", "nubus"}, |
| { 0x0607, "CARDBUS bridge", "cardbus"}, |
| { 0x0608, "RACEWAY bridge"}, |
| { 0x0680, "Bridge"}, |
| { 0x0700, "Serial port", "serial"}, |
| { 0x0701, "Parallel port", "parallel"}, |
| { 0x0800, "Interrupt controller", "interrupt-controller"}, |
| { 0x0801, "DMA controller", "dma-controller"}, |
| { 0x0802, "Timer", "timer"}, |
| { 0x0803, "RTC", "rtc"}, |
| { 0x0900, "Keyboard", "keyboard"}, |
| { 0x0901, "Pen", "pen"}, |
| { 0x0902, "Mouse", "mouse"}, |
| { 0x0A00, "Dock station", "dock", 0x00ff}, |
| { 0x0B00, "i386 cpu", "cpu", 0x00ff}, |
| { 0x0c00, "Fireware contorller", "fireware"}, |
| { 0x0c01, "Access bus controller", "access-bus"}, |
| { 0x0c02, "SSA controller", "ssa"}, |
| { 0x0c03, "USB controller", "usb"}, |
| { 0x0c04, "Fibre channel controller", "fibre-channel"}, |
| { 0x0c05, "SMBus"}, |
| { 0, NULL} |
| }; |
| |
| static void pci_for_each_device_under_bus(PCIBus *bus, |
| void (*fn)(PCIBus *b, PCIDevice *d, |
| void *opaque), |
| void *opaque) |
| { |
| PCIDevice *d; |
| int devfn; |
| |
| for(devfn = 0; devfn < ARRAY_SIZE(bus->devices); devfn++) { |
| d = bus->devices[devfn]; |
| if (d) { |
| fn(bus, d, opaque); |
| } |
| } |
| } |
| |
| void pci_for_each_device(PCIBus *bus, int bus_num, |
| void (*fn)(PCIBus *b, PCIDevice *d, void *opaque), |
| void *opaque) |
| { |
| bus = pci_find_bus_nr(bus, bus_num); |
| |
| if (bus) { |
| pci_for_each_device_under_bus(bus, fn, opaque); |
| } |
| } |
| |
| static const pci_class_desc *get_class_desc(int class) |
| { |
| const pci_class_desc *desc; |
| |
| desc = pci_class_descriptions; |
| while (desc->desc && class != desc->class) { |
| desc++; |
| } |
| |
| return desc; |
| } |
| |
| static PciDeviceInfoList *qmp_query_pci_devices(PCIBus *bus, int bus_num); |
| |
| static PciMemoryRegionList *qmp_query_pci_regions(const PCIDevice *dev) |
| { |
| PciMemoryRegionList *head = NULL, *cur_item = NULL; |
| int i; |
| |
| for (i = 0; i < PCI_NUM_REGIONS; i++) { |
| const PCIIORegion *r = &dev->io_regions[i]; |
| PciMemoryRegionList *region; |
| |
| if (!r->size) { |
| continue; |
| } |
| |
| region = g_malloc0(sizeof(*region)); |
| region->value = g_malloc0(sizeof(*region->value)); |
| |
| if (r->type & PCI_BASE_ADDRESS_SPACE_IO) { |
| region->value->type = g_strdup("io"); |
| } else { |
| region->value->type = g_strdup("memory"); |
| region->value->has_prefetch = true; |
| region->value->prefetch = !!(r->type & PCI_BASE_ADDRESS_MEM_PREFETCH); |
| region->value->has_mem_type_64 = true; |
| region->value->mem_type_64 = !!(r->type & PCI_BASE_ADDRESS_MEM_TYPE_64); |
| } |
| |
| region->value->bar = i; |
| region->value->address = r->addr; |
| region->value->size = r->size; |
| |
| /* XXX: waiting for the qapi to support GSList */ |
| if (!cur_item) { |
| head = cur_item = region; |
| } else { |
| cur_item->next = region; |
| cur_item = region; |
| } |
| } |
| |
| return head; |
| } |
| |
| static PciBridgeInfo *qmp_query_pci_bridge(PCIDevice *dev, PCIBus *bus, |
| int bus_num) |
| { |
| PciBridgeInfo *info; |
| |
| info = g_malloc0(sizeof(*info)); |
| |
| info->bus.number = dev->config[PCI_PRIMARY_BUS]; |
| info->bus.secondary = dev->config[PCI_SECONDARY_BUS]; |
| info->bus.subordinate = dev->config[PCI_SUBORDINATE_BUS]; |
| |
| info->bus.io_range = g_malloc0(sizeof(*info->bus.io_range)); |
| info->bus.io_range->base = pci_bridge_get_base(dev, PCI_BASE_ADDRESS_SPACE_IO); |
| info->bus.io_range->limit = pci_bridge_get_limit(dev, PCI_BASE_ADDRESS_SPACE_IO); |
| |
| info->bus.memory_range = g_malloc0(sizeof(*info->bus.memory_range)); |
| info->bus.memory_range->base = pci_bridge_get_base(dev, PCI_BASE_ADDRESS_SPACE_MEMORY); |
| info->bus.memory_range->limit = pci_bridge_get_limit(dev, PCI_BASE_ADDRESS_SPACE_MEMORY); |
| |
| info->bus.prefetchable_range = g_malloc0(sizeof(*info->bus.prefetchable_range)); |
| info->bus.prefetchable_range->base = pci_bridge_get_base(dev, PCI_BASE_ADDRESS_MEM_PREFETCH); |
| info->bus.prefetchable_range->limit = pci_bridge_get_limit(dev, PCI_BASE_ADDRESS_MEM_PREFETCH); |
| |
| if (dev->config[PCI_SECONDARY_BUS] != 0) { |
| PCIBus *child_bus = pci_find_bus_nr(bus, dev->config[PCI_SECONDARY_BUS]); |
| if (child_bus) { |
| info->has_devices = true; |
| info->devices = qmp_query_pci_devices(child_bus, dev->config[PCI_SECONDARY_BUS]); |
| } |
| } |
| |
| return info; |
| } |
| |
| static PciDeviceInfo *qmp_query_pci_device(PCIDevice *dev, PCIBus *bus, |
| int bus_num) |
| { |
| const pci_class_desc *desc; |
| PciDeviceInfo *info; |
| uint8_t type; |
| int class; |
| |
| info = g_malloc0(sizeof(*info)); |
| info->bus = bus_num; |
| info->slot = PCI_SLOT(dev->devfn); |
| info->function = PCI_FUNC(dev->devfn); |
| |
| class = pci_get_word(dev->config + PCI_CLASS_DEVICE); |
| info->class_info.class = class; |
| desc = get_class_desc(class); |
| if (desc->desc) { |
| info->class_info.has_desc = true; |
| info->class_info.desc = g_strdup(desc->desc); |
| } |
| |
| info->id.vendor = pci_get_word(dev->config + PCI_VENDOR_ID); |
| info->id.device = pci_get_word(dev->config + PCI_DEVICE_ID); |
| info->regions = qmp_query_pci_regions(dev); |
| info->qdev_id = g_strdup(dev->qdev.id ? dev->qdev.id : ""); |
| |
| if (dev->config[PCI_INTERRUPT_PIN] != 0) { |
| info->has_irq = true; |
| info->irq = dev->config[PCI_INTERRUPT_LINE]; |
| } |
| |
| type = dev->config[PCI_HEADER_TYPE] & ~PCI_HEADER_TYPE_MULTI_FUNCTION; |
| if (type == PCI_HEADER_TYPE_BRIDGE) { |
| info->has_pci_bridge = true; |
| info->pci_bridge = qmp_query_pci_bridge(dev, bus, bus_num); |
| } |
| |
| return info; |
| } |
| |
| static PciDeviceInfoList *qmp_query_pci_devices(PCIBus *bus, int bus_num) |
| { |
| PciDeviceInfoList *info, *head = NULL, *cur_item = NULL; |
| PCIDevice *dev; |
| int devfn; |
| |
| for (devfn = 0; devfn < ARRAY_SIZE(bus->devices); devfn++) { |
| dev = bus->devices[devfn]; |
| if (dev) { |
| info = g_malloc0(sizeof(*info)); |
| info->value = qmp_query_pci_device(dev, bus, bus_num); |
| |
| /* XXX: waiting for the qapi to support GSList */ |
| if (!cur_item) { |
| head = cur_item = info; |
| } else { |
| cur_item->next = info; |
| cur_item = info; |
| } |
| } |
| } |
| |
| return head; |
| } |
| |
| static PciInfo *qmp_query_pci_bus(PCIBus *bus, int bus_num) |
| { |
| PciInfo *info = NULL; |
| |
| bus = pci_find_bus_nr(bus, bus_num); |
| if (bus) { |
| info = g_malloc0(sizeof(*info)); |
| info->bus = bus_num; |
| info->devices = qmp_query_pci_devices(bus, bus_num); |
| } |
| |
| return info; |
| } |
| |
| PciInfoList *qmp_query_pci(Error **errp) |
| { |
| PciInfoList *info, *head = NULL, *cur_item = NULL; |
| struct PCIHostBus *host; |
| |
| QLIST_FOREACH(host, &host_buses, next) { |
| info = g_malloc0(sizeof(*info)); |
| info->value = qmp_query_pci_bus(host->bus, 0); |
| |
| /* XXX: waiting for the qapi to support GSList */ |
| if (!cur_item) { |
| head = cur_item = info; |
| } else { |
| cur_item->next = info; |
| cur_item = info; |
| } |
| } |
| |
| return head; |
| } |
| |
| static const char * const pci_nic_models[] = { |
| "ne2k_pci", |
| "i82551", |
| "i82557b", |
| "i82559er", |
| "rtl8139", |
| "e1000", |
| "pcnet", |
| "virtio", |
| NULL |
| }; |
| |
| static const char * const pci_nic_names[] = { |
| "ne2k_pci", |
| "i82551", |
| "i82557b", |
| "i82559er", |
| "rtl8139", |
| "e1000", |
| "pcnet", |
| "virtio-net-pci", |
| NULL |
| }; |
| |
| /* Initialize a PCI NIC. */ |
| /* FIXME callers should check for failure, but don't */ |
| PCIDevice *pci_nic_init(NICInfo *nd, const char *default_model, |
| const char *default_devaddr) |
| { |
| const char *devaddr = nd->devaddr ? nd->devaddr : default_devaddr; |
| PCIBus *bus; |
| int devfn; |
| PCIDevice *pci_dev; |
| DeviceState *dev; |
| int i; |
| |
| i = qemu_find_nic_model(nd, pci_nic_models, default_model); |
| if (i < 0) |
| return NULL; |
| |
| bus = pci_get_bus_devfn(&devfn, devaddr); |
| if (!bus) { |
| error_report("Invalid PCI device address %s for device %s", |
| devaddr, pci_nic_names[i]); |
| return NULL; |
| } |
| |
| pci_dev = pci_create(bus, devfn, pci_nic_names[i]); |
| dev = &pci_dev->qdev; |
| qdev_set_nic_properties(dev, nd); |
| if (qdev_init(dev) < 0) |
| return NULL; |
| return pci_dev; |
| } |
| |
| PCIDevice *pci_nic_init_nofail(NICInfo *nd, const char *default_model, |
| const char *default_devaddr) |
| { |
| PCIDevice *res; |
| |
| if (qemu_show_nic_models(nd->model, pci_nic_models)) |
| exit(0); |
| |
| res = pci_nic_init(nd, default_model, default_devaddr); |
| if (!res) |
| exit(1); |
| return res; |
| } |
| |
| PCIDevice *pci_vga_init(PCIBus *bus) |
| { |
| switch (vga_interface_type) { |
| case VGA_CIRRUS: |
| return pci_create_simple(bus, -1, "cirrus-vga"); |
| case VGA_QXL: |
| return pci_create_simple(bus, -1, "qxl-vga"); |
| case VGA_STD: |
| return pci_create_simple(bus, -1, "VGA"); |
| case VGA_VMWARE: |
| return pci_create_simple(bus, -1, "vmware-svga"); |
| case VGA_NONE: |
| default: /* Other non-PCI types. Checking for unsupported types is already |
| done in vl.c. */ |
| return NULL; |
| } |
| } |
| |
| /* Whether a given bus number is in range of the secondary |
| * bus of the given bridge device. */ |
| static bool pci_secondary_bus_in_range(PCIDevice *dev, int bus_num) |
| { |
| return !(pci_get_word(dev->config + PCI_BRIDGE_CONTROL) & |
| PCI_BRIDGE_CTL_BUS_RESET) /* Don't walk the bus if it's reset. */ && |
| dev->config[PCI_SECONDARY_BUS] < bus_num && |
| bus_num <= dev->config[PCI_SUBORDINATE_BUS]; |
| } |
| |
| static PCIBus *pci_find_bus_nr(PCIBus *bus, int bus_num) |
| { |
| PCIBus *sec; |
| |
| if (!bus) { |
| return NULL; |
| } |
| |
| if (pci_bus_num(bus) == bus_num) { |
| return bus; |
| } |
| |
| /* Consider all bus numbers in range for the host pci bridge. */ |
| if (bus->parent_dev && |
| !pci_secondary_bus_in_range(bus->parent_dev, bus_num)) { |
| return NULL; |
| } |
| |
| /* try child bus */ |
| for (; bus; bus = sec) { |
| QLIST_FOREACH(sec, &bus->child, sibling) { |
| assert(sec->parent_dev); |
| if (sec->parent_dev->config[PCI_SECONDARY_BUS] == bus_num) { |
| return sec; |
| } |
| if (pci_secondary_bus_in_range(sec->parent_dev, bus_num)) { |
| break; |
| } |
| } |
| } |
| |
| return NULL; |
| } |
| |
| PCIDevice *pci_find_device(PCIBus *bus, int bus_num, uint8_t devfn) |
| { |
| bus = pci_find_bus_nr(bus, bus_num); |
| |
| if (!bus) |
| return NULL; |
| |
| return bus->devices[devfn]; |
| } |
| |
| static int pci_qdev_init(DeviceState *qdev) |
| { |
| PCIDevice *pci_dev = (PCIDevice *)qdev; |
| PCIDeviceClass *pc = PCI_DEVICE_GET_CLASS(pci_dev); |
| PCIBus *bus; |
| int rc; |
| bool is_default_rom; |
| |
| /* initialize cap_present for pci_is_express() and pci_config_size() */ |
| if (pc->is_express) { |
| pci_dev->cap_present |= QEMU_PCI_CAP_EXPRESS; |
| } |
| |
| bus = FROM_QBUS(PCIBus, qdev_get_parent_bus(qdev)); |
| pci_dev = do_pci_register_device(pci_dev, bus, |
| object_get_typename(OBJECT(qdev)), |
| pci_dev->devfn); |
| if (pci_dev == NULL) |
| return -1; |
| if (qdev->hotplugged && pc->no_hotplug) { |
| qerror_report(QERR_DEVICE_NO_HOTPLUG, object_get_typename(OBJECT(pci_dev))); |
| do_pci_unregister_device(pci_dev); |
| return -1; |
| } |
| if (pc->init) { |
| rc = pc->init(pci_dev); |
| if (rc != 0) { |
| do_pci_unregister_device(pci_dev); |
| return rc; |
| } |
| } |
| |
| /* rom loading */ |
| is_default_rom = false; |
| if (pci_dev->romfile == NULL && pc->romfile != NULL) { |
| pci_dev->romfile = g_strdup(pc->romfile); |
| is_default_rom = true; |
| } |
| pci_add_option_rom(pci_dev, is_default_rom); |
| |
| if (bus->hotplug) { |
| /* Let buses differentiate between hotplug and when device is |
| * enabled during qemu machine creation. */ |
| rc = bus->hotplug(bus->hotplug_qdev, pci_dev, |
| qdev->hotplugged ? PCI_HOTPLUG_ENABLED: |
| PCI_COLDPLUG_ENABLED); |
| if (rc != 0) { |
| int r = pci_unregister_device(&pci_dev->qdev); |
| assert(!r); |
| return rc; |
| } |
| } |
| return 0; |
| } |
| |
| static int pci_unplug_device(DeviceState *qdev) |
| { |
| PCIDevice *dev = PCI_DEVICE(qdev); |
| PCIDeviceClass *pc = PCI_DEVICE_GET_CLASS(dev); |
| |
| if (pc->no_hotplug) { |
| qerror_report(QERR_DEVICE_NO_HOTPLUG, object_get_typename(OBJECT(dev))); |
| return -1; |
| } |
| return dev->bus->hotplug(dev->bus->hotplug_qdev, dev, |
| PCI_HOTPLUG_DISABLED); |
| } |
| |
| PCIDevice *pci_create_multifunction(PCIBus *bus, int devfn, bool multifunction, |
| const char *name) |
| { |
| DeviceState *dev; |
| |
| dev = qdev_create(&bus->qbus, name); |
| qdev_prop_set_int32(dev, "addr", devfn); |
| qdev_prop_set_bit(dev, "multifunction", multifunction); |
| return PCI_DEVICE(dev); |
| } |
| |
| PCIDevice *pci_create_simple_multifunction(PCIBus *bus, int devfn, |
| bool multifunction, |
| const char *name) |
| { |
| PCIDevice *dev = pci_create_multifunction(bus, devfn, multifunction, name); |
| qdev_init_nofail(&dev->qdev); |
| return dev; |
| } |
| |
| PCIDevice *pci_create(PCIBus *bus, int devfn, const char *name) |
| { |
| return pci_create_multifunction(bus, devfn, false, name); |
| } |
| |
| PCIDevice *pci_create_simple(PCIBus *bus, int devfn, const char *name) |
| { |
| return pci_create_simple_multifunction(bus, devfn, false, name); |
| } |
| |
| static uint8_t pci_find_space(PCIDevice *pdev, uint8_t size) |
| { |
| int offset = PCI_CONFIG_HEADER_SIZE; |
| int i; |
| for (i = PCI_CONFIG_HEADER_SIZE; i < PCI_CONFIG_SPACE_SIZE; ++i) { |
| if (pdev->used[i]) |
| offset = i + 1; |
| else if (i - offset + 1 == size) |
| return offset; |
| } |
| return 0; |
| } |
| |
| static uint8_t pci_find_capability_list(PCIDevice *pdev, uint8_t cap_id, |
| uint8_t *prev_p) |
| { |
| uint8_t next, prev; |
| |
| if (!(pdev->config[PCI_STATUS] & PCI_STATUS_CAP_LIST)) |
| return 0; |
| |
| for (prev = PCI_CAPABILITY_LIST; (next = pdev->config[prev]); |
| prev = next + PCI_CAP_LIST_NEXT) |
| if (pdev->config[next + PCI_CAP_LIST_ID] == cap_id) |
| break; |
| |
| if (prev_p) |
| *prev_p = prev; |
| return next; |
| } |
| |
| static uint8_t pci_find_capability_at_offset(PCIDevice *pdev, uint8_t offset) |
| { |
| uint8_t next, prev, found = 0; |
| |
| if (!(pdev->used[offset])) { |
| return 0; |
| } |
| |
| assert(pdev->config[PCI_STATUS] & PCI_STATUS_CAP_LIST); |
| |
| for (prev = PCI_CAPABILITY_LIST; (next = pdev->config[prev]); |
| prev = next + PCI_CAP_LIST_NEXT) { |
| if (next <= offset && next > found) { |
| found = next; |
| } |
| } |
| return found; |
| } |
| |
| /* Patch the PCI vendor and device ids in a PCI rom image if necessary. |
| This is needed for an option rom which is used for more than one device. */ |
| static void pci_patch_ids(PCIDevice *pdev, uint8_t *ptr, int size) |
| { |
| uint16_t vendor_id; |
| uint16_t device_id; |
| uint16_t rom_vendor_id; |
| uint16_t rom_device_id; |
| uint16_t rom_magic; |
| uint16_t pcir_offset; |
| uint8_t checksum; |
| |
| /* Words in rom data are little endian (like in PCI configuration), |
| so they can be read / written with pci_get_word / pci_set_word. */ |
| |
| /* Only a valid rom will be patched. */ |
| rom_magic = pci_get_word(ptr); |
| if (rom_magic != 0xaa55) { |
| PCI_DPRINTF("Bad ROM magic %04x\n", rom_magic); |
| return; |
| } |
| pcir_offset = pci_get_word(ptr + 0x18); |
| if (pcir_offset + 8 >= size || memcmp(ptr + pcir_offset, "PCIR", 4)) { |
| PCI_DPRINTF("Bad PCIR offset 0x%x or signature\n", pcir_offset); |
| return; |
| } |
| |
| vendor_id = pci_get_word(pdev->config + PCI_VENDOR_ID); |
| device_id = pci_get_word(pdev->config + PCI_DEVICE_ID); |
| rom_vendor_id = pci_get_word(ptr + pcir_offset + 4); |
| rom_device_id = pci_get_word(ptr + pcir_offset + 6); |
| |
| PCI_DPRINTF("%s: ROM id %04x%04x / PCI id %04x%04x\n", pdev->romfile, |
| vendor_id, device_id, rom_vendor_id, rom_device_id); |
| |
| checksum = ptr[6]; |
| |
| if (vendor_id != rom_vendor_id) { |
| /* Patch vendor id and checksum (at offset 6 for etherboot roms). */ |
| checksum += (uint8_t)rom_vendor_id + (uint8_t)(rom_vendor_id >> 8); |
| checksum -= (uint8_t)vendor_id + (uint8_t)(vendor_id >> 8); |
| PCI_DPRINTF("ROM checksum %02x / %02x\n", ptr[6], checksum); |
| ptr[6] = checksum; |
| pci_set_word(ptr + pcir_offset + 4, vendor_id); |
| } |
| |
| if (device_id != rom_device_id) { |
| /* Patch device id and checksum (at offset 6 for etherboot roms). */ |
| checksum += (uint8_t)rom_device_id + (uint8_t)(rom_device_id >> 8); |
| checksum -= (uint8_t)device_id + (uint8_t)(device_id >> 8); |
| PCI_DPRINTF("ROM checksum %02x / %02x\n", ptr[6], checksum); |
| ptr[6] = checksum; |
| pci_set_word(ptr + pcir_offset + 6, device_id); |
| } |
| } |
| |
| /* Add an option rom for the device */ |
| static int pci_add_option_rom(PCIDevice *pdev, bool is_default_rom) |
| { |
| int size; |
| char *path; |
| void *ptr; |
| char name[32]; |
| const VMStateDescription *vmsd; |
| |
| if (!pdev->romfile) |
| return 0; |
| if (strlen(pdev->romfile) == 0) |
| return 0; |
| |
| if (!pdev->rom_bar) { |
| /* |
| * Load rom via fw_cfg instead of creating a rom bar, |
| * for 0.11 compatibility. |
| */ |
| int class = pci_get_word(pdev->config + PCI_CLASS_DEVICE); |
| if (class == 0x0300) { |
| rom_add_vga(pdev->romfile); |
| } else { |
| rom_add_option(pdev->romfile, -1); |
| } |
| return 0; |
| } |
| |
| path = qemu_find_file(QEMU_FILE_TYPE_BIOS, pdev->romfile); |
| if (path == NULL) { |
| path = g_strdup(pdev->romfile); |
| } |
| |
| size = get_image_size(path); |
| if (size < 0) { |
| error_report("%s: failed to find romfile \"%s\"", |
| __FUNCTION__, pdev->romfile); |
| g_free(path); |
| return -1; |
| } |
| if (size & (size - 1)) { |
| size = 1 << qemu_fls(size); |
| } |
| |
| vmsd = qdev_get_vmsd(DEVICE(pdev)); |
| |
| if (vmsd) { |
| snprintf(name, sizeof(name), "%s.rom", vmsd->name); |
| } else { |
| snprintf(name, sizeof(name), "%s.rom", object_get_typename(OBJECT(pdev))); |
| } |
| pdev->has_rom = true; |
| memory_region_init_ram(&pdev->rom, name, size); |
| vmstate_register_ram(&pdev->rom, &pdev->qdev); |
| ptr = memory_region_get_ram_ptr(&pdev->rom); |
| load_image(path, ptr); |
| g_free(path); |
| |
| if (is_default_rom) { |
| /* Only the default rom images will be patched (if needed). */ |
| pci_patch_ids(pdev, ptr, size); |
| } |
| |
| qemu_put_ram_ptr(ptr); |
| |
| pci_register_bar(pdev, PCI_ROM_SLOT, 0, &pdev->rom); |
| |
| return 0; |
| } |
| |
| static void pci_del_option_rom(PCIDevice *pdev) |
| { |
| if (!pdev->has_rom) |
| return; |
| |
| vmstate_unregister_ram(&pdev->rom, &pdev->qdev); |
| memory_region_destroy(&pdev->rom); |
| pdev->has_rom = false; |
| } |
| |
| /* |
| * if !offset |
| * Reserve space and add capability to the linked list in pci config space |
| * |
| * if offset = 0, |
| * Find and reserve space and add capability to the linked list |
| * in pci config space */ |
| int pci_add_capability(PCIDevice *pdev, uint8_t cap_id, |
| uint8_t offset, uint8_t size) |
| { |
| uint8_t *config; |
| int i, overlapping_cap; |
| |
| if (!offset) { |
| offset = pci_find_space(pdev, size); |
| if (!offset) { |
| return -ENOSPC; |
| } |
| } else { |
| /* Verify that capabilities don't overlap. Note: device assignment |
| * depends on this check to verify that the device is not broken. |
| * Should never trigger for emulated devices, but it's helpful |
| * for debugging these. */ |
| for (i = offset; i < offset + size; i++) { |
| overlapping_cap = pci_find_capability_at_offset(pdev, i); |
| if (overlapping_cap) { |
| fprintf(stderr, "ERROR: %04x:%02x:%02x.%x " |
| "Attempt to add PCI capability %x at offset " |
| "%x overlaps existing capability %x at offset %x\n", |
| pci_find_domain(pdev->bus), pci_bus_num(pdev->bus), |
| PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn), |
| cap_id, offset, overlapping_cap, i); |
| return -EINVAL; |
| } |
| } |
| } |
| |
| config = pdev->config + offset; |
| config[PCI_CAP_LIST_ID] = cap_id; |
| config[PCI_CAP_LIST_NEXT] = pdev->config[PCI_CAPABILITY_LIST]; |
| pdev->config[PCI_CAPABILITY_LIST] = offset; |
| pdev->config[PCI_STATUS] |= PCI_STATUS_CAP_LIST; |
| memset(pdev->used + offset, 0xFF, QEMU_ALIGN_UP(size, 4)); |
| /* Make capability read-only by default */ |
| memset(pdev->wmask + offset, 0, size); |
| /* Check capability by default */ |
| memset(pdev->cmask + offset, 0xFF, size); |
| return offset; |
| } |
| |
| /* Unlink capability from the pci config space. */ |
| void pci_del_capability(PCIDevice *pdev, uint8_t cap_id, uint8_t size) |
| { |
| uint8_t prev, offset = pci_find_capability_list(pdev, cap_id, &prev); |
| if (!offset) |
| return; |
| pdev->config[prev] = pdev->config[offset + PCI_CAP_LIST_NEXT]; |
| /* Make capability writable again */ |
| memset(pdev->wmask + offset, 0xff, size); |
| memset(pdev->w1cmask + offset, 0, size); |
| /* Clear cmask as device-specific registers can't be checked */ |
| memset(pdev->cmask + offset, 0, size); |
| memset(pdev->used + offset, 0, QEMU_ALIGN_UP(size, 4)); |
| |
| if (!pdev->config[PCI_CAPABILITY_LIST]) |
| pdev->config[PCI_STATUS] &= ~PCI_STATUS_CAP_LIST; |
| } |
| |
| uint8_t pci_find_capability(PCIDevice *pdev, uint8_t cap_id) |
| { |
| return pci_find_capability_list(pdev, cap_id, NULL); |
| } |
| |
| static void pcibus_dev_print(Monitor *mon, DeviceState *dev, int indent) |
| { |
| PCIDevice *d = (PCIDevice *)dev; |
| const pci_class_desc *desc; |
| char ctxt[64]; |
| PCIIORegion *r; |
| int i, class; |
| |
| class = pci_get_word(d->config + PCI_CLASS_DEVICE); |
| desc = pci_class_descriptions; |
| while (desc->desc && class != desc->class) |
| desc++; |
| if (desc->desc) { |
| snprintf(ctxt, sizeof(ctxt), "%s", desc->desc); |
| } else { |
| snprintf(ctxt, sizeof(ctxt), "Class %04x", class); |
| } |
| |
| monitor_printf(mon, "%*sclass %s, addr %02x:%02x.%x, " |
| "pci id %04x:%04x (sub %04x:%04x)\n", |
| indent, "", ctxt, pci_bus_num(d->bus), |
| PCI_SLOT(d->devfn), PCI_FUNC(d->devfn), |
| pci_get_word(d->config + PCI_VENDOR_ID), |
| pci_get_word(d->config + PCI_DEVICE_ID), |
| pci_get_word(d->config + PCI_SUBSYSTEM_VENDOR_ID), |
| pci_get_word(d->config + PCI_SUBSYSTEM_ID)); |
| for (i = 0; i < PCI_NUM_REGIONS; i++) { |
| r = &d->io_regions[i]; |
| if (!r->size) |
| continue; |
| monitor_printf(mon, "%*sbar %d: %s at 0x%"FMT_PCIBUS |
| " [0x%"FMT_PCIBUS"]\n", |
| indent, "", |
| i, r->type & PCI_BASE_ADDRESS_SPACE_IO ? "i/o" : "mem", |
| r->addr, r->addr + r->size - 1); |
| } |
| } |
| |
| static char *pci_dev_fw_name(DeviceState *dev, char *buf, int len) |
| { |
| PCIDevice *d = (PCIDevice *)dev; |
| const char *name = NULL; |
| const pci_class_desc *desc = pci_class_descriptions; |
| int class = pci_get_word(d->config + PCI_CLASS_DEVICE); |
| |
| while (desc->desc && |
| (class & ~desc->fw_ign_bits) != |
| (desc->class & ~desc->fw_ign_bits)) { |
| desc++; |
| } |
| |
| if (desc->desc) { |
| name = desc->fw_name; |
| } |
| |
| if (name) { |
| pstrcpy(buf, len, name); |
| } else { |
| snprintf(buf, len, "pci%04x,%04x", |
| pci_get_word(d->config + PCI_VENDOR_ID), |
| pci_get_word(d->config + PCI_DEVICE_ID)); |
| } |
| |
| return buf; |
| } |
| |
| static char *pcibus_get_fw_dev_path(DeviceState *dev) |
| { |
| PCIDevice *d = (PCIDevice *)dev; |
| char path[50], name[33]; |
| int off; |
| |
| off = snprintf(path, sizeof(path), "%s@%x", |
| pci_dev_fw_name(dev, name, sizeof name), |
| PCI_SLOT(d->devfn)); |
| if (PCI_FUNC(d->devfn)) |
| snprintf(path + off, sizeof(path) + off, ",%x", PCI_FUNC(d->devfn)); |
| return g_strdup(path); |
| } |
| |
| static char *pcibus_get_dev_path(DeviceState *dev) |
| { |
| PCIDevice *d = container_of(dev, PCIDevice, qdev); |
| PCIDevice *t; |
| int slot_depth; |
| /* Path format: Domain:00:Slot.Function:Slot.Function....:Slot.Function. |
| * 00 is added here to make this format compatible with |
| * domain:Bus:Slot.Func for systems without nested PCI bridges. |
| * Slot.Function list specifies the slot and function numbers for all |
| * devices on the path from root to the specific device. */ |
| char domain[] = "DDDD:00"; |
| char slot[] = ":SS.F"; |
| int domain_len = sizeof domain - 1 /* For '\0' */; |
| int slot_len = sizeof slot - 1 /* For '\0' */; |
| int path_len; |
| char *path, *p; |
| int s; |
| |
| /* Calculate # of slots on path between device and root. */; |
| slot_depth = 0; |
| for (t = d; t; t = t->bus->parent_dev) { |
| ++slot_depth; |
| } |
| |
| path_len = domain_len + slot_len * slot_depth; |
| |
| /* Allocate memory, fill in the terminating null byte. */ |
| path = g_malloc(path_len + 1 /* For '\0' */); |
| path[path_len] = '\0'; |
| |
| /* First field is the domain. */ |
| s = snprintf(domain, sizeof domain, "%04x:00", pci_find_domain(d->bus)); |
| assert(s == domain_len); |
| memcpy(path, domain, domain_len); |
| |
| /* Fill in slot numbers. We walk up from device to root, so need to print |
| * them in the reverse order, last to first. */ |
| p = path + path_len; |
| for (t = d; t; t = t->bus->parent_dev) { |
| p -= slot_len; |
| s = snprintf(slot, sizeof slot, ":%02x.%x", |
| PCI_SLOT(t->devfn), PCI_FUNC(t->devfn)); |
| assert(s == slot_len); |
| memcpy(p, slot, slot_len); |
| } |
| |
| return path; |
| } |
| |
| static int pci_qdev_find_recursive(PCIBus *bus, |
| const char *id, PCIDevice **pdev) |
| { |
| DeviceState *qdev = qdev_find_recursive(&bus->qbus, id); |
| if (!qdev) { |
| return -ENODEV; |
| } |
| |
| /* roughly check if given qdev is pci device */ |
| if (object_dynamic_cast(OBJECT(qdev), TYPE_PCI_DEVICE)) { |
| *pdev = PCI_DEVICE(qdev); |
| return 0; |
| } |
| return -EINVAL; |
| } |
| |
| int pci_qdev_find_device(const char *id, PCIDevice **pdev) |
| { |
| struct PCIHostBus *host; |
| int rc = -ENODEV; |
| |
| QLIST_FOREACH(host, &host_buses, next) { |
| int tmp = pci_qdev_find_recursive(host->bus, id, pdev); |
| if (!tmp) { |
| rc = 0; |
| break; |
| } |
| if (tmp != -ENODEV) { |
| rc = tmp; |
| } |
| } |
| |
| return rc; |
| } |
| |
| MemoryRegion *pci_address_space(PCIDevice *dev) |
| { |
| return dev->bus->address_space_mem; |
| } |
| |
| MemoryRegion *pci_address_space_io(PCIDevice *dev) |
| { |
| return dev->bus->address_space_io; |
| } |
| |
| static void pci_device_class_init(ObjectClass *klass, void *data) |
| { |
| DeviceClass *k = DEVICE_CLASS(klass); |
| k->init = pci_qdev_init; |
| k->unplug = pci_unplug_device; |
| k->exit = pci_unregister_device; |
| k->bus_type = TYPE_PCI_BUS; |
| k->props = pci_props; |
| } |
| |
| void pci_setup_iommu(PCIBus *bus, PCIDMAContextFunc fn, void *opaque) |
| { |
| bus->dma_context_fn = fn; |
| bus->dma_context_opaque = opaque; |
| } |
| |
| static TypeInfo pci_device_type_info = { |
| .name = TYPE_PCI_DEVICE, |
| .parent = TYPE_DEVICE, |
| .instance_size = sizeof(PCIDevice), |
| .abstract = true, |
| .class_size = sizeof(PCIDeviceClass), |
| .class_init = pci_device_class_init, |
| }; |
| |
| static void pci_register_types(void) |
| { |
| type_register_static(&pci_bus_info); |
| type_register_static(&pci_device_type_info); |
| } |
| |
| type_init(pci_register_types) |