| /* |
| * QEMU ICH9 Emulation |
| * |
| * Copyright (c) 2006 Fabrice Bellard |
| * Copyright (c) 2009, 2010, 2011 |
| * Isaku Yamahata <yamahata at valinux co jp> |
| * VA Linux Systems Japan K.K. |
| * Copyright (C) 2012 Jason Baron <jbaron@redhat.com> |
| * |
| * This is based on piix.c, but heavily modified. |
| * |
| * 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 "qemu/osdep.h" |
| #include "qemu/log.h" |
| #include "cpu.h" |
| #include "qapi/error.h" |
| #include "qapi/visitor.h" |
| #include "qemu/range.h" |
| #include "hw/dma/i8257.h" |
| #include "hw/isa/isa.h" |
| #include "migration/vmstate.h" |
| #include "hw/irq.h" |
| #include "hw/isa/apm.h" |
| #include "hw/pci/pci.h" |
| #include "hw/southbridge/ich9.h" |
| #include "hw/acpi/acpi.h" |
| #include "hw/acpi/ich9.h" |
| #include "hw/acpi/ich9_timer.h" |
| #include "hw/pci/pci_bus.h" |
| #include "hw/qdev-properties.h" |
| #include "sysemu/runstate.h" |
| #include "sysemu/sysemu.h" |
| #include "hw/core/cpu.h" |
| #include "hw/nvram/fw_cfg.h" |
| #include "qemu/cutils.h" |
| #include "hw/acpi/acpi_aml_interface.h" |
| #include "trace.h" |
| |
| /*****************************************************************************/ |
| /* ICH9 LPC PCI to ISA bridge */ |
| |
| /* chipset configuration register |
| * to access chipset configuration registers, pci_[sg]et_{byte, word, long} |
| * are used. |
| * Although it's not pci configuration space, it's little endian as Intel. |
| */ |
| |
| static void ich9_cc_update_ir(uint8_t irr[PCI_NUM_PINS], uint16_t ir) |
| { |
| int intx; |
| for (intx = 0; intx < PCI_NUM_PINS; intx++) { |
| irr[intx] = (ir >> (intx * ICH9_CC_DIR_SHIFT)) & ICH9_CC_DIR_MASK; |
| } |
| } |
| |
| static void ich9_cc_update(ICH9LPCState *lpc) |
| { |
| int slot; |
| int pci_intx; |
| |
| const int reg_offsets[] = { |
| ICH9_CC_D25IR, |
| ICH9_CC_D26IR, |
| ICH9_CC_D27IR, |
| ICH9_CC_D28IR, |
| ICH9_CC_D29IR, |
| ICH9_CC_D30IR, |
| ICH9_CC_D31IR, |
| }; |
| const int *offset; |
| |
| /* D{25 - 31}IR, but D30IR is read only to 0. */ |
| for (slot = 25, offset = reg_offsets; slot < 32; slot++, offset++) { |
| if (slot == 30) { |
| continue; |
| } |
| ich9_cc_update_ir(lpc->irr[slot], |
| pci_get_word(lpc->chip_config + *offset)); |
| } |
| |
| /* |
| * D30: DMI2PCI bridge |
| * It is arbitrarily decided how INTx lines of PCI devices behind |
| * the bridge are connected to pirq lines. Our choice is PIRQ[E-H]. |
| * INT[A-D] are connected to PIRQ[E-H] |
| */ |
| for (pci_intx = 0; pci_intx < PCI_NUM_PINS; pci_intx++) { |
| lpc->irr[30][pci_intx] = pci_intx + 4; |
| } |
| } |
| |
| static void ich9_cc_init(ICH9LPCState *lpc) |
| { |
| int slot; |
| int intx; |
| |
| /* the default irq routing is arbitrary as long as it matches with |
| * acpi irq routing table. |
| * The one that is incompatible with piix_pci(= bochs) one is |
| * intentionally chosen to let the users know that the different |
| * board is used. |
| * |
| * int[A-D] -> pirq[E-F] |
| * avoid pirq A-D because they are used for pci express port |
| */ |
| for (slot = 0; slot < PCI_SLOT_MAX; slot++) { |
| for (intx = 0; intx < PCI_NUM_PINS; intx++) { |
| lpc->irr[slot][intx] = (slot + intx) % 4 + 4; |
| } |
| } |
| ich9_cc_update(lpc); |
| } |
| |
| static void ich9_cc_reset(ICH9LPCState *lpc) |
| { |
| uint8_t *c = lpc->chip_config; |
| |
| memset(lpc->chip_config, 0, sizeof(lpc->chip_config)); |
| |
| pci_set_long(c + ICH9_CC_D31IR, ICH9_CC_DIR_DEFAULT); |
| pci_set_long(c + ICH9_CC_D30IR, ICH9_CC_D30IR_DEFAULT); |
| pci_set_long(c + ICH9_CC_D29IR, ICH9_CC_DIR_DEFAULT); |
| pci_set_long(c + ICH9_CC_D28IR, ICH9_CC_DIR_DEFAULT); |
| pci_set_long(c + ICH9_CC_D27IR, ICH9_CC_DIR_DEFAULT); |
| pci_set_long(c + ICH9_CC_D26IR, ICH9_CC_DIR_DEFAULT); |
| pci_set_long(c + ICH9_CC_D25IR, ICH9_CC_DIR_DEFAULT); |
| pci_set_long(c + ICH9_CC_GCS, ICH9_CC_GCS_DEFAULT); |
| |
| ich9_cc_update(lpc); |
| } |
| |
| static void ich9_cc_addr_len(uint64_t *addr, unsigned *len) |
| { |
| *addr &= ICH9_CC_ADDR_MASK; |
| if (*addr + *len >= ICH9_CC_SIZE) { |
| *len = ICH9_CC_SIZE - *addr; |
| } |
| } |
| |
| /* val: little endian */ |
| static void ich9_cc_write(void *opaque, hwaddr addr, |
| uint64_t val, unsigned len) |
| { |
| ICH9LPCState *lpc = (ICH9LPCState *)opaque; |
| |
| trace_ich9_cc_write(addr, val, len); |
| ich9_cc_addr_len(&addr, &len); |
| memcpy(lpc->chip_config + addr, &val, len); |
| pci_bus_fire_intx_routing_notifier(pci_get_bus(&lpc->d)); |
| ich9_cc_update(lpc); |
| } |
| |
| /* return value: little endian */ |
| static uint64_t ich9_cc_read(void *opaque, hwaddr addr, |
| unsigned len) |
| { |
| ICH9LPCState *lpc = (ICH9LPCState *)opaque; |
| |
| uint32_t val = 0; |
| ich9_cc_addr_len(&addr, &len); |
| memcpy(&val, lpc->chip_config + addr, len); |
| trace_ich9_cc_read(addr, val, len); |
| return val; |
| } |
| |
| /* IRQ routing */ |
| /* */ |
| static void ich9_lpc_rout(uint8_t pirq_rout, int *pic_irq, int *pic_dis) |
| { |
| *pic_irq = pirq_rout & ICH9_LPC_PIRQ_ROUT_MASK; |
| *pic_dis = pirq_rout & ICH9_LPC_PIRQ_ROUT_IRQEN; |
| } |
| |
| static void ich9_lpc_pic_irq(ICH9LPCState *lpc, int pirq_num, |
| int *pic_irq, int *pic_dis) |
| { |
| switch (pirq_num) { |
| case 0 ... 3: /* A-D */ |
| ich9_lpc_rout(lpc->d.config[ICH9_LPC_PIRQA_ROUT + pirq_num], |
| pic_irq, pic_dis); |
| return; |
| case 4 ... 7: /* E-H */ |
| ich9_lpc_rout(lpc->d.config[ICH9_LPC_PIRQE_ROUT + (pirq_num - 4)], |
| pic_irq, pic_dis); |
| return; |
| default: |
| break; |
| } |
| abort(); |
| } |
| |
| /* gsi: i8259+ioapic irq 0-15, otherwise assert */ |
| static void ich9_lpc_update_pic(ICH9LPCState *lpc, int gsi) |
| { |
| int i, pic_level; |
| |
| assert(gsi < ICH9_LPC_PIC_NUM_PINS); |
| |
| /* The pic level is the logical OR of all the PCI irqs mapped to it */ |
| pic_level = 0; |
| for (i = 0; i < ICH9_LPC_NB_PIRQS; i++) { |
| int tmp_irq; |
| int tmp_dis; |
| ich9_lpc_pic_irq(lpc, i, &tmp_irq, &tmp_dis); |
| if (!tmp_dis && tmp_irq == gsi) { |
| pic_level |= pci_bus_get_irq_level(pci_get_bus(&lpc->d), i); |
| } |
| } |
| if (gsi == lpc->sci_gsi) { |
| pic_level |= lpc->sci_level; |
| } |
| |
| qemu_set_irq(lpc->gsi[gsi], pic_level); |
| } |
| |
| /* APIC mode: GSIx: PIRQ[A-H] -> GSI 16, ... no pirq shares same APIC pins. */ |
| static int ich9_pirq_to_gsi(int pirq) |
| { |
| return pirq + ICH9_LPC_PIC_NUM_PINS; |
| } |
| |
| static int ich9_gsi_to_pirq(int gsi) |
| { |
| return gsi - ICH9_LPC_PIC_NUM_PINS; |
| } |
| |
| /* gsi: ioapic irq 16-23, otherwise assert */ |
| static void ich9_lpc_update_apic(ICH9LPCState *lpc, int gsi) |
| { |
| int level = 0; |
| |
| assert(gsi >= ICH9_LPC_PIC_NUM_PINS); |
| |
| level |= pci_bus_get_irq_level(pci_get_bus(&lpc->d), ich9_gsi_to_pirq(gsi)); |
| if (gsi == lpc->sci_gsi) { |
| level |= lpc->sci_level; |
| } |
| |
| qemu_set_irq(lpc->gsi[gsi], level); |
| } |
| |
| static void ich9_lpc_set_irq(void *opaque, int pirq, int level) |
| { |
| ICH9LPCState *lpc = opaque; |
| int pic_irq, pic_dis; |
| |
| assert(0 <= pirq); |
| assert(pirq < ICH9_LPC_NB_PIRQS); |
| |
| ich9_lpc_update_apic(lpc, ich9_pirq_to_gsi(pirq)); |
| ich9_lpc_pic_irq(lpc, pirq, &pic_irq, &pic_dis); |
| ich9_lpc_update_pic(lpc, pic_irq); |
| } |
| |
| /* return the pirq number (PIRQ[A-H]:0-7) corresponding to |
| * a given device irq pin. |
| */ |
| static int ich9_lpc_map_irq(PCIDevice *pci_dev, int intx) |
| { |
| BusState *bus = qdev_get_parent_bus(&pci_dev->qdev); |
| PCIBus *pci_bus = PCI_BUS(bus); |
| PCIDevice *lpc_pdev = |
| pci_bus->devices[PCI_DEVFN(ICH9_LPC_DEV, ICH9_LPC_FUNC)]; |
| ICH9LPCState *lpc = ICH9_LPC_DEVICE(lpc_pdev); |
| |
| return lpc->irr[PCI_SLOT(pci_dev->devfn)][intx]; |
| } |
| |
| static PCIINTxRoute ich9_route_intx_pin_to_irq(void *opaque, int pirq_pin) |
| { |
| ICH9LPCState *lpc = opaque; |
| PCIINTxRoute route; |
| int pic_irq; |
| int pic_dis; |
| |
| assert(0 <= pirq_pin); |
| assert(pirq_pin < ICH9_LPC_NB_PIRQS); |
| |
| route.mode = PCI_INTX_ENABLED; |
| ich9_lpc_pic_irq(lpc, pirq_pin, &pic_irq, &pic_dis); |
| if (!pic_dis) { |
| if (pic_irq < ICH9_LPC_PIC_NUM_PINS) { |
| route.irq = pic_irq; |
| } else { |
| route.mode = PCI_INTX_DISABLED; |
| route.irq = -1; |
| } |
| } else { |
| /* |
| * Strictly speaking, this is wrong. The PIRQ should be routed |
| * to *both* the I/O APIC and the PIC, on different pins. The |
| * I/O APIC has a fixed mapping to IRQ16-23, while the PIC is |
| * routed according to the PIRQx_ROUT configuration. But QEMU |
| * doesn't (yet) cope with the concept of pin numbers differing |
| * between PIC and I/O APIC, and neither does the in-kernel KVM |
| * irqchip support. So we route to the I/O APIC *only* if the |
| * routing to the PIC is disabled in the PIRQx_ROUT settings. |
| * |
| * This seems to work even if we boot a Linux guest with 'noapic' |
| * to make it use the legacy PIC, and then kexec directly into a |
| * new kernel which uses the I/O APIC. The new kernel explicitly |
| * disables the PIRQ routing even though it doesn't need to care. |
| */ |
| route.irq = ich9_pirq_to_gsi(pirq_pin); |
| } |
| |
| return route; |
| } |
| |
| void ich9_generate_smi(void) |
| { |
| cpu_interrupt(first_cpu, CPU_INTERRUPT_SMI); |
| } |
| |
| /* Returns -1 on error, IRQ number on success */ |
| static int ich9_lpc_sci_irq(ICH9LPCState *lpc) |
| { |
| uint8_t sel = lpc->d.config[ICH9_LPC_ACPI_CTRL] & |
| ICH9_LPC_ACPI_CTRL_SCI_IRQ_SEL_MASK; |
| switch (sel) { |
| case ICH9_LPC_ACPI_CTRL_9: |
| return 9; |
| case ICH9_LPC_ACPI_CTRL_10: |
| return 10; |
| case ICH9_LPC_ACPI_CTRL_11: |
| return 11; |
| case ICH9_LPC_ACPI_CTRL_20: |
| return 20; |
| case ICH9_LPC_ACPI_CTRL_21: |
| return 21; |
| default: |
| /* reserved */ |
| qemu_log_mask(LOG_GUEST_ERROR, |
| "ICH9 LPC: SCI IRQ SEL #%u is reserved\n", sel); |
| break; |
| } |
| return -1; |
| } |
| |
| static void ich9_set_sci(void *opaque, int irq_num, int level) |
| { |
| ICH9LPCState *lpc = opaque; |
| int irq; |
| |
| assert(irq_num == 0); |
| level = !!level; |
| if (level == lpc->sci_level) { |
| return; |
| } |
| lpc->sci_level = level; |
| |
| irq = lpc->sci_gsi; |
| if (irq < 0) { |
| return; |
| } |
| |
| if (irq >= ICH9_LPC_PIC_NUM_PINS) { |
| ich9_lpc_update_apic(lpc, irq); |
| } else { |
| ich9_lpc_update_pic(lpc, irq); |
| } |
| } |
| |
| static void smi_features_ok_callback(void *opaque) |
| { |
| ICH9LPCState *lpc = opaque; |
| uint64_t guest_features; |
| uint64_t guest_cpu_hotplug_features; |
| |
| if (lpc->smi_features_ok) { |
| /* negotiation already complete, features locked */ |
| return; |
| } |
| |
| memcpy(&guest_features, lpc->smi_guest_features_le, sizeof guest_features); |
| le64_to_cpus(&guest_features); |
| if (guest_features & ~lpc->smi_host_features) { |
| /* guest requests invalid features, leave @features_ok at zero */ |
| return; |
| } |
| |
| guest_cpu_hotplug_features = guest_features & |
| (BIT_ULL(ICH9_LPC_SMI_F_CPU_HOTPLUG_BIT) | |
| BIT_ULL(ICH9_LPC_SMI_F_CPU_HOT_UNPLUG_BIT)); |
| if (!(guest_features & BIT_ULL(ICH9_LPC_SMI_F_BROADCAST_BIT)) && |
| guest_cpu_hotplug_features) { |
| /* |
| * cpu hot-[un]plug with SMI requires SMI broadcast, |
| * leave @features_ok at zero |
| */ |
| return; |
| } |
| |
| if (guest_cpu_hotplug_features == |
| BIT_ULL(ICH9_LPC_SMI_F_CPU_HOT_UNPLUG_BIT)) { |
| /* cpu hot-unplug is unsupported without cpu-hotplug */ |
| return; |
| } |
| |
| /* valid feature subset requested, lock it down, report success */ |
| lpc->smi_negotiated_features = guest_features; |
| lpc->smi_features_ok = 1; |
| } |
| |
| static void ich9_lpc_pm_init(ICH9LPCState *lpc) |
| { |
| qemu_irq sci_irq; |
| FWCfgState *fw_cfg = fw_cfg_find(); |
| |
| sci_irq = qemu_allocate_irq(ich9_set_sci, lpc, 0); |
| ich9_pm_init(PCI_DEVICE(lpc), &lpc->pm, sci_irq); |
| |
| if (lpc->smi_host_features && fw_cfg) { |
| uint64_t host_features_le; |
| |
| host_features_le = cpu_to_le64(lpc->smi_host_features); |
| memcpy(lpc->smi_host_features_le, &host_features_le, |
| sizeof host_features_le); |
| fw_cfg_add_file(fw_cfg, "etc/smi/supported-features", |
| lpc->smi_host_features_le, |
| sizeof lpc->smi_host_features_le); |
| |
| /* The other two guest-visible fields are cleared on device reset, we |
| * just link them into fw_cfg here. |
| */ |
| fw_cfg_add_file_callback(fw_cfg, "etc/smi/requested-features", |
| NULL, NULL, NULL, |
| lpc->smi_guest_features_le, |
| sizeof lpc->smi_guest_features_le, |
| false); |
| fw_cfg_add_file_callback(fw_cfg, "etc/smi/features-ok", |
| smi_features_ok_callback, NULL, lpc, |
| &lpc->smi_features_ok, |
| sizeof lpc->smi_features_ok, |
| true); |
| } |
| } |
| |
| /* APM */ |
| |
| static void ich9_apm_ctrl_changed(uint32_t val, void *arg) |
| { |
| ICH9LPCState *lpc = arg; |
| |
| /* ACPI specs 3.0, 4.7.2.5 */ |
| acpi_pm1_cnt_update(&lpc->pm.acpi_regs, |
| val == ICH9_APM_ACPI_ENABLE, |
| val == ICH9_APM_ACPI_DISABLE); |
| if (val == ICH9_APM_ACPI_ENABLE || val == ICH9_APM_ACPI_DISABLE) { |
| return; |
| } |
| |
| /* SMI_EN = PMBASE + 30. SMI control and enable register */ |
| if (lpc->pm.smi_en & ICH9_PMIO_SMI_EN_APMC_EN) { |
| if (lpc->smi_negotiated_features & |
| (UINT64_C(1) << ICH9_LPC_SMI_F_BROADCAST_BIT)) { |
| CPUState *cs; |
| CPU_FOREACH(cs) { |
| cpu_interrupt(cs, CPU_INTERRUPT_SMI); |
| } |
| } else { |
| cpu_interrupt(current_cpu, CPU_INTERRUPT_SMI); |
| } |
| } |
| } |
| |
| /* config:PMBASE */ |
| static void |
| ich9_lpc_pmbase_sci_update(ICH9LPCState *lpc) |
| { |
| uint32_t pm_io_base = pci_get_long(lpc->d.config + ICH9_LPC_PMBASE); |
| uint8_t acpi_cntl = pci_get_long(lpc->d.config + ICH9_LPC_ACPI_CTRL); |
| int new_gsi; |
| |
| if (acpi_cntl & ICH9_LPC_ACPI_CTRL_ACPI_EN) { |
| pm_io_base &= ICH9_LPC_PMBASE_BASE_ADDRESS_MASK; |
| } else { |
| pm_io_base = 0; |
| } |
| |
| ich9_pm_iospace_update(&lpc->pm, pm_io_base); |
| |
| new_gsi = ich9_lpc_sci_irq(lpc); |
| if (new_gsi == -1) { |
| return; |
| } |
| if (lpc->sci_level && new_gsi != lpc->sci_gsi) { |
| qemu_set_irq(lpc->pm.irq, 0); |
| lpc->sci_gsi = new_gsi; |
| qemu_set_irq(lpc->pm.irq, 1); |
| } |
| lpc->sci_gsi = new_gsi; |
| } |
| |
| /* config:RCBA */ |
| static void ich9_lpc_rcba_update(ICH9LPCState *lpc, uint32_t rcba_old) |
| { |
| uint32_t rcba = pci_get_long(lpc->d.config + ICH9_LPC_RCBA); |
| |
| if (rcba_old & ICH9_LPC_RCBA_EN) { |
| memory_region_del_subregion(get_system_memory(), &lpc->rcrb_mem); |
| } |
| if (rcba & ICH9_LPC_RCBA_EN) { |
| memory_region_add_subregion_overlap(get_system_memory(), |
| rcba & ICH9_LPC_RCBA_BA_MASK, |
| &lpc->rcrb_mem, 1); |
| } |
| } |
| |
| /* config:GEN_PMCON* */ |
| static void |
| ich9_lpc_pmcon_update(ICH9LPCState *lpc) |
| { |
| uint16_t gen_pmcon_1 = pci_get_word(lpc->d.config + ICH9_LPC_GEN_PMCON_1); |
| uint16_t wmask; |
| |
| if (lpc->pm.swsmi_timer_enabled) { |
| ich9_pm_update_swsmi_timer( |
| &lpc->pm, lpc->pm.smi_en & ICH9_PMIO_SMI_EN_SWSMI_EN); |
| } |
| if (lpc->pm.periodic_timer_enabled) { |
| ich9_pm_update_periodic_timer( |
| &lpc->pm, lpc->pm.smi_en & ICH9_PMIO_SMI_EN_PERIODIC_EN); |
| } |
| |
| if (gen_pmcon_1 & ICH9_LPC_GEN_PMCON_1_SMI_LOCK) { |
| wmask = pci_get_word(lpc->d.wmask + ICH9_LPC_GEN_PMCON_1); |
| wmask &= ~ICH9_LPC_GEN_PMCON_1_SMI_LOCK; |
| pci_set_word(lpc->d.wmask + ICH9_LPC_GEN_PMCON_1, wmask); |
| lpc->pm.smi_en_wmask &= ~1; |
| } |
| } |
| |
| static int ich9_lpc_post_load(void *opaque, int version_id) |
| { |
| ICH9LPCState *lpc = opaque; |
| |
| ich9_lpc_pmbase_sci_update(lpc); |
| ich9_lpc_rcba_update(lpc, 0 /* disabled ICH9_LPC_RCBA_EN */); |
| ich9_lpc_pmcon_update(lpc); |
| return 0; |
| } |
| |
| static void ich9_lpc_config_write(PCIDevice *d, |
| uint32_t addr, uint32_t val, int len) |
| { |
| ICH9LPCState *lpc = ICH9_LPC_DEVICE(d); |
| uint32_t rcba_old = pci_get_long(d->config + ICH9_LPC_RCBA); |
| |
| pci_default_write_config(d, addr, val, len); |
| if (ranges_overlap(addr, len, ICH9_LPC_PMBASE, 4) || |
| ranges_overlap(addr, len, ICH9_LPC_ACPI_CTRL, 1)) { |
| ich9_lpc_pmbase_sci_update(lpc); |
| } |
| if (ranges_overlap(addr, len, ICH9_LPC_RCBA, 4)) { |
| ich9_lpc_rcba_update(lpc, rcba_old); |
| } |
| if (ranges_overlap(addr, len, ICH9_LPC_PIRQA_ROUT, 4)) { |
| pci_bus_fire_intx_routing_notifier(pci_get_bus(&lpc->d)); |
| } |
| if (ranges_overlap(addr, len, ICH9_LPC_PIRQE_ROUT, 4)) { |
| pci_bus_fire_intx_routing_notifier(pci_get_bus(&lpc->d)); |
| } |
| if (ranges_overlap(addr, len, ICH9_LPC_GEN_PMCON_1, 8)) { |
| ich9_lpc_pmcon_update(lpc); |
| } |
| } |
| |
| static void ich9_lpc_reset(DeviceState *qdev) |
| { |
| PCIDevice *d = PCI_DEVICE(qdev); |
| ICH9LPCState *lpc = ICH9_LPC_DEVICE(d); |
| uint32_t rcba_old = pci_get_long(d->config + ICH9_LPC_RCBA); |
| int i; |
| |
| for (i = 0; i < 4; i++) { |
| pci_set_byte(d->config + ICH9_LPC_PIRQA_ROUT + i, |
| ICH9_LPC_PIRQ_ROUT_DEFAULT); |
| } |
| for (i = 0; i < 4; i++) { |
| pci_set_byte(d->config + ICH9_LPC_PIRQE_ROUT + i, |
| ICH9_LPC_PIRQ_ROUT_DEFAULT); |
| } |
| pci_set_byte(d->config + ICH9_LPC_ACPI_CTRL, ICH9_LPC_ACPI_CTRL_DEFAULT); |
| |
| pci_set_long(d->config + ICH9_LPC_PMBASE, ICH9_LPC_PMBASE_DEFAULT); |
| pci_set_long(d->config + ICH9_LPC_RCBA, ICH9_LPC_RCBA_DEFAULT); |
| |
| ich9_cc_reset(lpc); |
| |
| ich9_lpc_pmbase_sci_update(lpc); |
| ich9_lpc_rcba_update(lpc, rcba_old); |
| |
| lpc->sci_level = 0; |
| lpc->rst_cnt = 0; |
| |
| memset(lpc->smi_guest_features_le, 0, sizeof lpc->smi_guest_features_le); |
| lpc->smi_features_ok = 0; |
| lpc->smi_negotiated_features = 0; |
| } |
| |
| /* root complex register block is mapped into memory space */ |
| static const MemoryRegionOps rcrb_mmio_ops = { |
| .read = ich9_cc_read, |
| .write = ich9_cc_write, |
| .endianness = DEVICE_LITTLE_ENDIAN, |
| }; |
| |
| static void ich9_lpc_machine_ready(Notifier *n, void *opaque) |
| { |
| ICH9LPCState *s = container_of(n, ICH9LPCState, machine_ready); |
| MemoryRegion *io_as = pci_address_space_io(&s->d); |
| uint8_t *pci_conf; |
| |
| pci_conf = s->d.config; |
| if (memory_region_present(io_as, 0x3f8)) { |
| /* com1 */ |
| pci_conf[0x82] |= 0x01; |
| } |
| if (memory_region_present(io_as, 0x2f8)) { |
| /* com2 */ |
| pci_conf[0x82] |= 0x02; |
| } |
| if (memory_region_present(io_as, 0x378)) { |
| /* lpt */ |
| pci_conf[0x82] |= 0x04; |
| } |
| if (memory_region_present(io_as, 0x3f2)) { |
| /* floppy */ |
| pci_conf[0x82] |= 0x08; |
| } |
| } |
| |
| /* reset control */ |
| static void ich9_rst_cnt_write(void *opaque, hwaddr addr, uint64_t val, |
| unsigned len) |
| { |
| ICH9LPCState *lpc = opaque; |
| |
| if (val & 4) { |
| qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET); |
| return; |
| } |
| lpc->rst_cnt = val & 0xA; /* keep FULL_RST (bit 3) and SYS_RST (bit 1) */ |
| } |
| |
| static uint64_t ich9_rst_cnt_read(void *opaque, hwaddr addr, unsigned len) |
| { |
| ICH9LPCState *lpc = opaque; |
| |
| return lpc->rst_cnt; |
| } |
| |
| static const MemoryRegionOps ich9_rst_cnt_ops = { |
| .read = ich9_rst_cnt_read, |
| .write = ich9_rst_cnt_write, |
| .endianness = DEVICE_LITTLE_ENDIAN |
| }; |
| |
| static void ich9_lpc_initfn(Object *obj) |
| { |
| ICH9LPCState *lpc = ICH9_LPC_DEVICE(obj); |
| |
| static const uint8_t acpi_enable_cmd = ICH9_APM_ACPI_ENABLE; |
| static const uint8_t acpi_disable_cmd = ICH9_APM_ACPI_DISABLE; |
| |
| object_initialize_child(obj, "rtc", &lpc->rtc, TYPE_MC146818_RTC); |
| |
| qdev_init_gpio_out_named(DEVICE(lpc), lpc->gsi, ICH9_GPIO_GSI, |
| IOAPIC_NUM_PINS); |
| |
| object_property_add_uint8_ptr(obj, ACPI_PM_PROP_SCI_INT, |
| &lpc->sci_gsi, OBJ_PROP_FLAG_READ); |
| object_property_add_uint8_ptr(OBJECT(lpc), ACPI_PM_PROP_ACPI_ENABLE_CMD, |
| &acpi_enable_cmd, OBJ_PROP_FLAG_READ); |
| object_property_add_uint8_ptr(OBJECT(lpc), ACPI_PM_PROP_ACPI_DISABLE_CMD, |
| &acpi_disable_cmd, OBJ_PROP_FLAG_READ); |
| object_property_add_uint64_ptr(obj, ICH9_LPC_SMI_NEGOTIATED_FEAT_PROP, |
| &lpc->smi_negotiated_features, |
| OBJ_PROP_FLAG_READ); |
| |
| ich9_pm_add_properties(obj, &lpc->pm); |
| } |
| |
| static void ich9_lpc_realize(PCIDevice *d, Error **errp) |
| { |
| ICH9LPCState *lpc = ICH9_LPC_DEVICE(d); |
| PCIBus *pci_bus = pci_get_bus(d); |
| ISABus *isa_bus; |
| uint32_t irq; |
| |
| if ((lpc->smi_host_features & BIT_ULL(ICH9_LPC_SMI_F_CPU_HOT_UNPLUG_BIT)) && |
| !(lpc->smi_host_features & BIT_ULL(ICH9_LPC_SMI_F_CPU_HOTPLUG_BIT))) { |
| /* |
| * smi_features_ok_callback() throws an error on this. |
| * |
| * So bail out here instead of advertizing the invalid |
| * configuration and get obscure firmware failures from that. |
| */ |
| error_setg(errp, "cpu hot-unplug requires cpu hot-plug"); |
| return; |
| } |
| |
| isa_bus = isa_bus_new(DEVICE(d), get_system_memory(), get_system_io(), |
| errp); |
| if (!isa_bus) { |
| return; |
| } |
| |
| pci_set_long(d->wmask + ICH9_LPC_PMBASE, |
| ICH9_LPC_PMBASE_BASE_ADDRESS_MASK); |
| pci_set_byte(d->wmask + ICH9_LPC_PMBASE, |
| ICH9_LPC_ACPI_CTRL_ACPI_EN | |
| ICH9_LPC_ACPI_CTRL_SCI_IRQ_SEL_MASK); |
| |
| memory_region_init_io(&lpc->rcrb_mem, OBJECT(d), &rcrb_mmio_ops, lpc, |
| "lpc-rcrb-mmio", ICH9_CC_SIZE); |
| |
| ich9_cc_init(lpc); |
| apm_init(d, &lpc->apm, ich9_apm_ctrl_changed, lpc); |
| |
| lpc->machine_ready.notify = ich9_lpc_machine_ready; |
| qemu_add_machine_init_done_notifier(&lpc->machine_ready); |
| |
| memory_region_init_io(&lpc->rst_cnt_mem, OBJECT(d), &ich9_rst_cnt_ops, lpc, |
| "lpc-reset-control", 1); |
| memory_region_add_subregion_overlap(pci_address_space_io(d), |
| ICH9_RST_CNT_IOPORT, &lpc->rst_cnt_mem, |
| 1); |
| |
| isa_bus_register_input_irqs(isa_bus, lpc->gsi); |
| |
| i8257_dma_init(OBJECT(d), isa_bus, 0); |
| |
| /* RTC */ |
| qdev_prop_set_int32(DEVICE(&lpc->rtc), "base_year", 2000); |
| if (!qdev_realize(DEVICE(&lpc->rtc), BUS(isa_bus), errp)) { |
| return; |
| } |
| irq = object_property_get_uint(OBJECT(&lpc->rtc), "irq", &error_fatal); |
| isa_connect_gpio_out(ISA_DEVICE(&lpc->rtc), 0, irq); |
| |
| pci_bus_irqs(pci_bus, ich9_lpc_set_irq, d, ICH9_LPC_NB_PIRQS); |
| pci_bus_map_irqs(pci_bus, ich9_lpc_map_irq); |
| pci_bus_set_route_irq_fn(pci_bus, ich9_route_intx_pin_to_irq); |
| |
| ich9_lpc_pm_init(lpc); |
| } |
| |
| static bool ich9_rst_cnt_needed(void *opaque) |
| { |
| ICH9LPCState *lpc = opaque; |
| |
| return (lpc->rst_cnt != 0); |
| } |
| |
| static const VMStateDescription vmstate_ich9_rst_cnt = { |
| .name = "ICH9LPC/rst_cnt", |
| .version_id = 1, |
| .minimum_version_id = 1, |
| .needed = ich9_rst_cnt_needed, |
| .fields = (const VMStateField[]) { |
| VMSTATE_UINT8(rst_cnt, ICH9LPCState), |
| VMSTATE_END_OF_LIST() |
| } |
| }; |
| |
| static bool ich9_smi_feat_needed(void *opaque) |
| { |
| ICH9LPCState *lpc = opaque; |
| |
| return !buffer_is_zero(lpc->smi_guest_features_le, |
| sizeof lpc->smi_guest_features_le) || |
| lpc->smi_features_ok; |
| } |
| |
| static const VMStateDescription vmstate_ich9_smi_feat = { |
| .name = "ICH9LPC/smi_feat", |
| .version_id = 1, |
| .minimum_version_id = 1, |
| .needed = ich9_smi_feat_needed, |
| .fields = (const VMStateField[]) { |
| VMSTATE_UINT8_ARRAY(smi_guest_features_le, ICH9LPCState, |
| sizeof(uint64_t)), |
| VMSTATE_UINT8(smi_features_ok, ICH9LPCState), |
| VMSTATE_UINT64(smi_negotiated_features, ICH9LPCState), |
| VMSTATE_END_OF_LIST() |
| } |
| }; |
| |
| static const VMStateDescription vmstate_ich9_lpc = { |
| .name = "ICH9LPC", |
| .version_id = 1, |
| .minimum_version_id = 1, |
| .post_load = ich9_lpc_post_load, |
| .fields = (const VMStateField[]) { |
| VMSTATE_PCI_DEVICE(d, ICH9LPCState), |
| VMSTATE_STRUCT(apm, ICH9LPCState, 0, vmstate_apm, APMState), |
| VMSTATE_STRUCT(pm, ICH9LPCState, 0, vmstate_ich9_pm, ICH9LPCPMRegs), |
| VMSTATE_UINT8_ARRAY(chip_config, ICH9LPCState, ICH9_CC_SIZE), |
| VMSTATE_UINT32(sci_level, ICH9LPCState), |
| VMSTATE_END_OF_LIST() |
| }, |
| .subsections = (const VMStateDescription * const []) { |
| &vmstate_ich9_rst_cnt, |
| &vmstate_ich9_smi_feat, |
| NULL |
| } |
| }; |
| |
| static Property ich9_lpc_properties[] = { |
| DEFINE_PROP_BOOL("noreboot", ICH9LPCState, pin_strap.spkr_hi, false), |
| DEFINE_PROP_BOOL("smm-compat", ICH9LPCState, pm.smm_compat, false), |
| DEFINE_PROP_BOOL("smm-enabled", ICH9LPCState, pm.smm_enabled, false), |
| DEFINE_PROP_BIT64("x-smi-broadcast", ICH9LPCState, smi_host_features, |
| ICH9_LPC_SMI_F_BROADCAST_BIT, true), |
| DEFINE_PROP_BIT64("x-smi-cpu-hotplug", ICH9LPCState, smi_host_features, |
| ICH9_LPC_SMI_F_CPU_HOTPLUG_BIT, true), |
| DEFINE_PROP_BIT64("x-smi-cpu-hotunplug", ICH9LPCState, smi_host_features, |
| ICH9_LPC_SMI_F_CPU_HOT_UNPLUG_BIT, true), |
| DEFINE_PROP_BOOL("x-smi-swsmi-timer", ICH9LPCState, |
| pm.swsmi_timer_enabled, true), |
| DEFINE_PROP_BOOL("x-smi-periodic-timer", ICH9LPCState, |
| pm.periodic_timer_enabled, true), |
| DEFINE_PROP_END_OF_LIST(), |
| }; |
| |
| static void ich9_send_gpe(AcpiDeviceIf *adev, AcpiEventStatusBits ev) |
| { |
| ICH9LPCState *s = ICH9_LPC_DEVICE(adev); |
| |
| acpi_send_gpe_event(&s->pm.acpi_regs, s->pm.irq, ev); |
| } |
| |
| static void build_ich9_isa_aml(AcpiDevAmlIf *adev, Aml *scope) |
| { |
| Aml *field; |
| BusState *bus = qdev_get_child_bus(DEVICE(adev), "isa.0"); |
| Aml *sb_scope = aml_scope("\\_SB"); |
| |
| /* ICH9 PCI to ISA irq remapping */ |
| aml_append(scope, aml_operation_region("PIRQ", AML_PCI_CONFIG, |
| aml_int(0x60), 0x0C)); |
| /* Fields declarion has to happen *after* operation region */ |
| field = aml_field("PCI0.SF8.PIRQ", AML_BYTE_ACC, AML_NOLOCK, AML_PRESERVE); |
| aml_append(field, aml_named_field("PRQA", 8)); |
| aml_append(field, aml_named_field("PRQB", 8)); |
| aml_append(field, aml_named_field("PRQC", 8)); |
| aml_append(field, aml_named_field("PRQD", 8)); |
| aml_append(field, aml_reserved_field(0x20)); |
| aml_append(field, aml_named_field("PRQE", 8)); |
| aml_append(field, aml_named_field("PRQF", 8)); |
| aml_append(field, aml_named_field("PRQG", 8)); |
| aml_append(field, aml_named_field("PRQH", 8)); |
| aml_append(sb_scope, field); |
| aml_append(scope, sb_scope); |
| |
| qbus_build_aml(bus, scope); |
| } |
| |
| static void ich9_lpc_class_init(ObjectClass *klass, void *data) |
| { |
| DeviceClass *dc = DEVICE_CLASS(klass); |
| PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); |
| HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(klass); |
| AcpiDeviceIfClass *adevc = ACPI_DEVICE_IF_CLASS(klass); |
| AcpiDevAmlIfClass *amldevc = ACPI_DEV_AML_IF_CLASS(klass); |
| |
| set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories); |
| device_class_set_legacy_reset(dc, ich9_lpc_reset); |
| k->realize = ich9_lpc_realize; |
| dc->vmsd = &vmstate_ich9_lpc; |
| device_class_set_props(dc, ich9_lpc_properties); |
| k->config_write = ich9_lpc_config_write; |
| dc->desc = "ICH9 LPC bridge"; |
| k->vendor_id = PCI_VENDOR_ID_INTEL; |
| k->device_id = PCI_DEVICE_ID_INTEL_ICH9_8; |
| k->revision = ICH9_A2_LPC_REVISION; |
| k->class_id = PCI_CLASS_BRIDGE_ISA; |
| /* |
| * Reason: part of ICH9 southbridge, needs to be wired up by |
| * pc_q35_init() |
| */ |
| dc->user_creatable = false; |
| hc->pre_plug = ich9_pm_device_pre_plug_cb; |
| hc->plug = ich9_pm_device_plug_cb; |
| hc->unplug_request = ich9_pm_device_unplug_request_cb; |
| hc->unplug = ich9_pm_device_unplug_cb; |
| hc->is_hotpluggable_bus = ich9_pm_is_hotpluggable_bus; |
| adevc->ospm_status = ich9_pm_ospm_status; |
| adevc->send_event = ich9_send_gpe; |
| amldevc->build_dev_aml = build_ich9_isa_aml; |
| } |
| |
| static const TypeInfo ich9_lpc_info = { |
| .name = TYPE_ICH9_LPC_DEVICE, |
| .parent = TYPE_PCI_DEVICE, |
| .instance_size = sizeof(ICH9LPCState), |
| .instance_init = ich9_lpc_initfn, |
| .class_init = ich9_lpc_class_init, |
| .interfaces = (InterfaceInfo[]) { |
| { TYPE_HOTPLUG_HANDLER }, |
| { TYPE_ACPI_DEVICE_IF }, |
| { INTERFACE_CONVENTIONAL_PCI_DEVICE }, |
| { TYPE_ACPI_DEV_AML_IF }, |
| { } |
| } |
| }; |
| |
| static void ich9_lpc_register(void) |
| { |
| type_register_static(&ich9_lpc_info); |
| } |
| |
| type_init(ich9_lpc_register); |
