/* $Id: DevPCI.cpp $ */ /** @file * DevPCI - PCI BUS Device. * * @remarks New code shall be added to DevPciIch9.cpp as that will become * the common PCI bus code soon. Don't fix code in both DevPCI.cpp * and DevPciIch9.cpp when it's possible to just make the latter * version common. Common code uses the 'devpci' prefix, is * prototyped in DevPciInternal.h, and is defined in DevPciIch9.cpp. */ /* * Copyright (C) 2006-2023 Oracle and/or its affiliates. * * This file is part of VirtualBox base platform packages, as * available from https://www.virtualbox.org. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation, in version 3 of the * License. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, see . * * SPDX-License-Identifier: GPL-3.0-only * -------------------------------------------------------------------- * * This code is based on: * * 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. */ /********************************************************************************************************************************* * Header Files * *********************************************************************************************************************************/ #define LOG_GROUP LOG_GROUP_DEV_PCI #define PDMPCIDEV_INCLUDE_PRIVATE /* Hack to get pdmpcidevint.h included at the right point. */ #include #include #include #include #include #include #include "PciInline.h" #include "VBoxDD.h" #include "DevPciInternal.h" /********************************************************************************************************************************* * Defined Constants And Macros * *********************************************************************************************************************************/ /** Saved state version of the PCI bus device. */ #define VBOX_PCI_SAVED_STATE_VERSION VBOX_PCI_SAVED_STATE_VERSION_REGION_SIZES /** Adds I/O region types and sizes for dealing changes in resource regions. */ #define VBOX_PCI_SAVED_STATE_VERSION_REGION_SIZES 4 /** Before region sizes, the first named one. * Looking at the code though, we support even older version. */ #define VBOX_PCI_SAVED_STATE_VERSION_IRQ_STATES 3 /** Notes whether we use the I/O APIC. */ #define VBOX_PCI_SAVED_STATE_VERSION_USE_IO_APIC 2 /********************************************************************************************************************************* * Internal Functions * *********************************************************************************************************************************/ RT_C_DECLS_BEGIN static DECLCALLBACK(void) pcibridgeSetIrq(PPDMDEVINS pDevIns, PPDMPCIDEV pPciDev, int iIrq, int iLevel, uint32_t uTag); #ifdef IN_RING3 DECLINLINE(PPDMPCIDEV) pciR3FindBridge(PDEVPCIBUS pBus, uint8_t iBus); #endif RT_C_DECLS_END #define DEBUG_PCI #define PCI_VENDOR_ID 0x00 /* 16 bits */ #define PCI_DEVICE_ID 0x02 /* 16 bits */ #define PCI_COMMAND 0x04 /* 16 bits */ #define PCI_COMMAND_IO 0x01 /* Enable response in I/O space */ #define PCI_COMMAND_MEMORY 0x02 /* Enable response in Memory space */ #define PCI_CLASS_DEVICE 0x0a /* Device class */ #define PCI_INTERRUPT_LINE 0x3c /* 8 bits */ #define PCI_INTERRUPT_PIN 0x3d /* 8 bits */ #define PCI_MIN_GNT 0x3e /* 8 bits */ #define PCI_MAX_LAT 0x3f /* 8 bits */ static VBOXSTRICTRC pci_data_write(PPDMDEVINS pDevIns, PDEVPCIROOT pGlobals, uint32_t addr, uint32_t u32Value, int cb) { LogFunc(("addr=%08x u32Value=%08x cb=%d\n", pGlobals->uConfigReg, u32Value, cb)); if (!(pGlobals->uConfigReg & (1 << 31))) return VINF_SUCCESS; if ((pGlobals->uConfigReg & 0x3) != 0) return VINF_SUCCESS; uint8_t const iBus = (pGlobals->uConfigReg >> 16) & 0xff; uint8_t const iDevice = (pGlobals->uConfigReg >> 8) & 0xff; #ifdef IN_RING3 uint32_t const config_addr = (pGlobals->uConfigReg & 0xfc) | (addr & 3); #endif RT_UNTRUSTED_VALIDATED_FENCE(); /* paranoia */ VBOXSTRICTRC rcStrict = VINF_SUCCESS; if (iBus != 0) { if (pGlobals->PciBus.cBridges) { #ifdef IN_RING3 /** @todo do lookup in R0/RC too! */ PPDMPCIDEV pBridgeDevice = pciR3FindBridge(&pGlobals->PciBus, iBus); if (pBridgeDevice) { AssertPtr(pBridgeDevice->Int.s.pfnBridgeConfigWrite); rcStrict = pBridgeDevice->Int.s.pfnBridgeConfigWrite(pBridgeDevice->Int.s.CTX_SUFF(pDevIns), iBus, iDevice, config_addr, cb, u32Value); } #else RT_NOREF(pDevIns, addr, u32Value, cb); rcStrict = VINF_IOM_R3_IOPORT_WRITE; #endif } } else { R3PTRTYPE(PDMPCIDEV *) pPciDev = pGlobals->PciBus.apDevices[iDevice]; if (pPciDev) { #ifdef IN_RING3 LogFunc(("%s: addr=%02x u32Value=%08x cb=%d\n", pPciDev->pszNameR3, config_addr, u32Value, cb)); rcStrict = VINF_PDM_PCI_DO_DEFAULT; if (pPciDev->Int.s.pfnConfigWrite) rcStrict = pPciDev->Int.s.pfnConfigWrite(pPciDev->Int.s.CTX_SUFF(pDevIns), pPciDev, config_addr, cb, u32Value); if (rcStrict == VINF_PDM_PCI_DO_DEFAULT) rcStrict = devpciR3CommonConfigWriteWorker(pDevIns, PDMINS_2_DATA_CC(pDevIns, PDEVPCIBUSCC), pPciDev, config_addr, cb, u32Value); #else rcStrict = VINF_IOM_R3_IOPORT_WRITE; #endif } } return rcStrict; } static VBOXSTRICTRC pci_data_read(PDEVPCIROOT pGlobals, uint32_t addr, int cb, uint32_t *pu32Value) { *pu32Value = UINT32_MAX; if (!(pGlobals->uConfigReg & (1 << 31))) return VINF_SUCCESS; if ((pGlobals->uConfigReg & 0x3) != 0) return VINF_SUCCESS; uint8_t const iBus = (pGlobals->uConfigReg >> 16) & 0xff; uint8_t const iDevice = (pGlobals->uConfigReg >> 8) & 0xff; #ifdef IN_RING3 uint32_t const config_addr = (pGlobals->uConfigReg & 0xfc) | (addr & 3); #endif RT_UNTRUSTED_VALIDATED_FENCE(); VBOXSTRICTRC rcStrict = VINF_SUCCESS; if (iBus != 0) { if (pGlobals->PciBus.cBridges) { #ifdef IN_RING3 /** @todo do lookup in R0/RC too! */ PPDMPCIDEV pBridgeDevice = pciR3FindBridge(&pGlobals->PciBus, iBus); if (pBridgeDevice) { AssertPtr(pBridgeDevice->Int.s.pfnBridgeConfigRead); rcStrict = pBridgeDevice->Int.s.pfnBridgeConfigRead(pBridgeDevice->Int.s.CTX_SUFF(pDevIns), iBus, iDevice, config_addr, cb, pu32Value); } #else RT_NOREF(addr, cb); rcStrict = VINF_IOM_R3_IOPORT_READ; #endif } } else { R3PTRTYPE(PDMPCIDEV *) pPciDev = pGlobals->PciBus.apDevices[iDevice]; if (pPciDev) { #ifdef IN_RING3 rcStrict = VINF_PDM_PCI_DO_DEFAULT; if (pPciDev->Int.s.pfnConfigRead) rcStrict = pPciDev->Int.s.pfnConfigRead(pPciDev->Int.s.CTX_SUFF(pDevIns), pPciDev, config_addr, cb, pu32Value); if (rcStrict == VINF_PDM_PCI_DO_DEFAULT) rcStrict = devpciR3CommonConfigReadWorker(pPciDev, config_addr, cb, pu32Value); LogFunc(("%s: addr=%02x val=%08x cb=%d\n", pPciDev->pszNameR3, config_addr, *pu32Value, cb)); #else NOREF(cb); rcStrict = VINF_IOM_R3_IOPORT_READ; #endif } } return rcStrict; } /* return the global irq number corresponding to a given device irq pin. We could also use the bus number to have a more precise mapping. This is the implementation note described in the PCI spec chapter 2.2.6 */ static inline int pci_slot_get_pirq(uint8_t uDevFn, int irq_num) { int slot_addend; slot_addend = (uDevFn >> 3) - 1; return (irq_num + slot_addend) & 3; } static inline int pci_slot_get_apic_pirq(uint8_t uDevFn, int irq_num) { return (irq_num + (uDevFn >> 3)) & 7; } static inline int get_pci_irq_apic_level(PDEVPCIROOT pGlobals, int irq_num) { return (pGlobals->auPciApicIrqLevels[irq_num] != 0); } static void apic_set_irq(PPDMDEVINS pDevIns, PDEVPCIBUS pBus, PDEVPCIBUSCC pBusCC, uint8_t uDevFn, PDMPCIDEV *pPciDev, int irq_num1, int iLevel, int iAcpiIrq, uint32_t uTagSrc) { /* This is only allowed to be called with a pointer to the host bus. */ AssertMsg(pBus->iBus == 0, ("iBus=%u\n", pBus->iBus)); uint16_t const uBusDevFn = PCIBDF_MAKE(pBus->iBus, uDevFn); if (iAcpiIrq == -1) { int apic_irq, apic_level; PDEVPCIROOT pGlobals = DEVPCIBUS_2_DEVPCIROOT(pBus); int irq_num = pci_slot_get_apic_pirq(uDevFn, irq_num1); if ((iLevel & PDM_IRQ_LEVEL_HIGH) == PDM_IRQ_LEVEL_HIGH) ASMAtomicIncU32(&pGlobals->auPciApicIrqLevels[irq_num]); else if ((iLevel & PDM_IRQ_LEVEL_HIGH) == PDM_IRQ_LEVEL_LOW) ASMAtomicDecU32(&pGlobals->auPciApicIrqLevels[irq_num]); apic_irq = irq_num + 0x10; apic_level = get_pci_irq_apic_level(pGlobals, irq_num); Log3Func(("%s: irq_num1=%d level=%d apic_irq=%d apic_level=%d irq_num1=%d\n", R3STRING(pPciDev->pszNameR3), irq_num1, iLevel, apic_irq, apic_level, irq_num)); pBusCC->CTX_SUFF(pPciHlp)->pfnIoApicSetIrq(pDevIns, uBusDevFn, apic_irq, apic_level, uTagSrc); if ((iLevel & PDM_IRQ_LEVEL_FLIP_FLOP) == PDM_IRQ_LEVEL_FLIP_FLOP) { ASMAtomicDecU32(&pGlobals->auPciApicIrqLevels[irq_num]); pPciDev->Int.s.uIrqPinState = PDM_IRQ_LEVEL_LOW; apic_level = get_pci_irq_apic_level(pGlobals, irq_num); Log3Func(("%s: irq_num1=%d level=%d apic_irq=%d apic_level=%d irq_num1=%d (flop)\n", R3STRING(pPciDev->pszNameR3), irq_num1, iLevel, apic_irq, apic_level, irq_num)); pBusCC->CTX_SUFF(pPciHlp)->pfnIoApicSetIrq(pDevIns, uBusDevFn, apic_irq, apic_level, uTagSrc); } } else { Log3Func(("%s: irq_num1=%d level=%d iAcpiIrq=%d\n", R3STRING(pPciDev->pszNameR3), irq_num1, iLevel, iAcpiIrq)); pBusCC->CTX_SUFF(pPciHlp)->pfnIoApicSetIrq(pDevIns, uBusDevFn, iAcpiIrq, iLevel, uTagSrc); } } DECLINLINE(int) get_pci_irq_level(PDEVPCIROOT pGlobals, int irq_num) { return (pGlobals->Piix3.auPciLegacyIrqLevels[irq_num] != 0); } /** * Set the IRQ for a PCI device on the host bus - shared by host bus and bridge. * * @param pDevIns The PDM device instance for the PCI bus. * @param pGlobals Device instance of the host PCI bus. * @param pBusCC Context specific data for the PCI bus. * @param uDevFn The device number on the host bus which will raise the IRQ * @param pPciDev The PCI device structure which raised the interrupt. * @param iIrq IRQ number to set. * @param iLevel IRQ level. * @param uTagSrc The IRQ tag and source ID (for tracing). * @remark uDevFn and pPciDev->uDevFn are not the same if the device is behind * a bridge. In that case uDevFn will be the slot of the bridge which * is needed to calculate the PIRQ value. */ static void pciSetIrqInternal(PPDMDEVINS pDevIns, PDEVPCIROOT pGlobals, PDEVPCIBUSCC pBusCC, uint8_t uDevFn, PPDMPCIDEV pPciDev, int iIrq, int iLevel, uint32_t uTagSrc) { PDEVPCIBUS pBus = &pGlobals->PciBus; uint8_t *pbCfg = pDevIns->apPciDevs[1]->abConfig; const bool fIsAcpiDevice = pPciDev->abConfig[2] == 0x13 && pPciDev->abConfig[3] == 0x71; /* If the two configuration space bytes at 0xde, 0xad are set to 0xbe, 0xef, a back door * is opened to route PCI interrupts directly to the I/O APIC and bypass the PIC. * See the \_SB_.PCI0._PRT method in vbox.dsl. */ const bool fIsApicEnabled = pGlobals->fUseIoApic && pbCfg[0xde] == 0xbe && pbCfg[0xad] == 0xef; int pic_irq, pic_level; /* Check if the state changed. */ if (pPciDev->Int.s.uIrqPinState != iLevel) { pPciDev->Int.s.uIrqPinState = (iLevel & PDM_IRQ_LEVEL_HIGH); /* Send interrupt to I/O APIC only. */ if (fIsApicEnabled) { if (fIsAcpiDevice) /* * ACPI needs special treatment since SCI is hardwired and * should not be affected by PCI IRQ routing tables at the * same time SCI IRQ is shared in PCI sense hence this * kludge (i.e. we fetch the hardwired value from ACPIs * PCI device configuration space). */ apic_set_irq(pDevIns, pBus, pBusCC, uDevFn, pPciDev, -1, iLevel, pPciDev->abConfig[PCI_INTERRUPT_LINE], uTagSrc); else apic_set_irq(pDevIns, pBus, pBusCC, uDevFn, pPciDev, iIrq, iLevel, -1, uTagSrc); return; } if (fIsAcpiDevice) { /* As per above treat ACPI in a special way */ pic_irq = pPciDev->abConfig[PCI_INTERRUPT_LINE]; pGlobals->Piix3.iAcpiIrq = pic_irq; pGlobals->Piix3.iAcpiIrqLevel = iLevel & PDM_IRQ_LEVEL_HIGH; } else { int irq_num; irq_num = pci_slot_get_pirq(uDevFn, iIrq); if (pPciDev->Int.s.uIrqPinState == PDM_IRQ_LEVEL_HIGH) ASMAtomicIncU32(&pGlobals->Piix3.auPciLegacyIrqLevels[irq_num]); else if (pPciDev->Int.s.uIrqPinState == PDM_IRQ_LEVEL_LOW) ASMAtomicDecU32(&pGlobals->Piix3.auPciLegacyIrqLevels[irq_num]); /* now we change the pic irq level according to the piix irq mappings */ pic_irq = pbCfg[0x60 + irq_num]; if (pic_irq >= 16) { if ((iLevel & PDM_IRQ_LEVEL_FLIP_FLOP) == PDM_IRQ_LEVEL_FLIP_FLOP) { ASMAtomicDecU32(&pGlobals->Piix3.auPciLegacyIrqLevels[irq_num]); pPciDev->Int.s.uIrqPinState = PDM_IRQ_LEVEL_LOW; } return; } } /* the pic level is the logical OR of all the PCI irqs mapped to it */ pic_level = 0; if (pic_irq == pbCfg[0x60]) pic_level |= get_pci_irq_level(pGlobals, 0); /* PIRQA */ if (pic_irq == pbCfg[0x61]) pic_level |= get_pci_irq_level(pGlobals, 1); /* PIRQB */ if (pic_irq == pbCfg[0x62]) pic_level |= get_pci_irq_level(pGlobals, 2); /* PIRQC */ if (pic_irq == pbCfg[0x63]) pic_level |= get_pci_irq_level(pGlobals, 3); /* PIRQD */ if (pic_irq == pGlobals->Piix3.iAcpiIrq) pic_level |= pGlobals->Piix3.iAcpiIrqLevel; Log3Func(("%s: iLevel=%d iIrq=%d pic_irq=%d pic_level=%d uTagSrc=%#x\n", R3STRING(pPciDev->pszNameR3), iLevel, iIrq, pic_irq, pic_level, uTagSrc)); pBusCC->CTX_SUFF(pPciHlp)->pfnIsaSetIrq(pDevIns, pic_irq, pic_level, uTagSrc); /** @todo optimize pci irq flip-flop some rainy day. */ if ((iLevel & PDM_IRQ_LEVEL_FLIP_FLOP) == PDM_IRQ_LEVEL_FLIP_FLOP) pciSetIrqInternal(pDevIns, pGlobals, pBusCC, uDevFn, pPciDev, iIrq, PDM_IRQ_LEVEL_LOW, uTagSrc); } } /** * @interface_method_impl{PDMPCIBUSREGR3,pfnSetIrqR3} */ static DECLCALLBACK(void) pciSetIrq(PPDMDEVINS pDevIns, PPDMPCIDEV pPciDev, int iIrq, int iLevel, uint32_t uTagSrc) { PDEVPCIROOT pBus = PDMINS_2_DATA(pDevIns, PDEVPCIROOT); PDEVPCIBUSCC pBusCC = PDMINS_2_DATA_CC(pDevIns, PDEVPCIBUSCC); LogFlow(("pciSetIrq: %p %u %u %#x\n", pPciDev, iIrq, iLevel, uTagSrc)); pciSetIrqInternal(pDevIns, pBus, pBusCC, pPciDev->uDevFn, pPciDev, iIrq, iLevel, uTagSrc); } #ifdef IN_RING3 /** * Finds a bridge on the bus which contains the destination bus. * * @return Pointer to the device instance data of the bus or * NULL if no bridge was found. * @param pBus Pointer to the bus to search on. * @param iBus Destination bus number. */ DECLINLINE(PPDMPCIDEV) pciR3FindBridge(PDEVPCIBUS pBus, uint8_t iBus) { /* Search for a fitting bridge. */ for (uint32_t iBridge = 0; iBridge < pBus->cBridges; iBridge++) { /* * Examine secondary and subordinate bus number. * If the target bus is in the range we pass the request on to the bridge. */ PPDMPCIDEV pBridgeTemp = pBus->papBridgesR3[iBridge]; AssertMsg(pBridgeTemp && pciDevIsPci2PciBridge(pBridgeTemp), ("Device is not a PCI bridge but on the list of PCI bridges\n")); if ( iBus >= pBridgeTemp->abConfig[VBOX_PCI_SECONDARY_BUS] && iBus <= pBridgeTemp->abConfig[VBOX_PCI_SUBORDINATE_BUS]) return pBridgeTemp; } /* Nothing found. */ return NULL; } static void pciR3Piix3Reset(PPDMPCIDEV pPiix3PciDev) { uint8_t *pci_conf = pPiix3PciDev->abConfig; pci_conf[0x04] = 0x07; /* master, memory and I/O */ pci_conf[0x05] = 0x00; pci_conf[0x06] = 0x00; pci_conf[0x07] = 0x02; /* PCI_status_devsel_medium */ pci_conf[0x4c] = 0x4d; pci_conf[0x4e] = 0x03; pci_conf[0x4f] = 0x00; pci_conf[0x60] = 0x80; pci_conf[0x69] = 0x02; pci_conf[0x70] = 0x80; pci_conf[0x76] = 0x0c; pci_conf[0x77] = 0x0c; pci_conf[0x78] = 0x02; pci_conf[0x79] = 0x00; pci_conf[0x80] = 0x00; pci_conf[0x82] = 0x02; /* Get rid of the Linux guest "Enabling Passive Release" PCI quirk warning. */ pci_conf[0xa0] = 0x08; pci_conf[0xa2] = 0x00; pci_conf[0xa3] = 0x00; pci_conf[0xa4] = 0x00; pci_conf[0xa5] = 0x00; pci_conf[0xa6] = 0x00; pci_conf[0xa7] = 0x00; pci_conf[0xa8] = 0x0f; pci_conf[0xaa] = 0x00; pci_conf[0xab] = 0x00; pci_conf[0xac] = 0x00; pci_conf[0xae] = 0x00; } /* host irqs corresponding to PCI irqs A-D */ static const uint8_t pci_irqs[4] = { 11, 10, 9, 11 }; /* bird: added const */ static void pci_bios_init_device(PPDMDEVINS pDevIns, PDEVPCIROOT pGlobals, PDEVPCIBUS pBus, PPDMPCIDEV pPciDev, uint8_t cBridgeDepth, uint8_t *paBridgePositions) { uint32_t uPciBiosSpecialVRAM = 0xe0000000; uint32_t *paddr; int pin, pic_irq; uint16_t devclass, vendor_id, device_id; devclass = devpciR3GetWord(pPciDev, PCI_CLASS_DEVICE); vendor_id = devpciR3GetWord(pPciDev, PCI_VENDOR_ID); device_id = devpciR3GetWord(pPciDev, PCI_DEVICE_ID); /* Check if device is present. */ if (vendor_id != 0xffff) { switch (devclass) { case 0x0101: if ( (vendor_id == 0x8086) && (device_id == 0x7010 || device_id == 0x7111 || device_id == 0x269e)) { /* PIIX3, PIIX4 or ICH6 IDE */ devpciR3SetWord(pDevIns, pPciDev, 0x40, 0x8011); /* enable IDE0 + fast timing */ devpciR3SetWord(pDevIns, pPciDev, 0x42, 0x8011); /* enable IDE1 + fast timing */ goto default_map; } else { /* IDE: we map it as in ISA mode */ devpciR3BiosInitSetRegionAddress(pDevIns, pBus, pPciDev, 0, 0x1f0); devpciR3BiosInitSetRegionAddress(pDevIns, pBus, pPciDev, 1, 0x3f4); devpciR3BiosInitSetRegionAddress(pDevIns, pBus, pPciDev, 2, 0x170); devpciR3BiosInitSetRegionAddress(pDevIns, pBus, pPciDev, 3, 0x374); devpciR3SetWord(pDevIns, pPciDev, PCI_COMMAND, devpciR3GetWord(pPciDev, PCI_COMMAND) | PCI_COMMAND_IOACCESS); } break; case 0x0800: /* PIC */ vendor_id = devpciR3GetWord(pPciDev, PCI_VENDOR_ID); device_id = devpciR3GetWord(pPciDev, PCI_DEVICE_ID); if (vendor_id == 0x1014) { /* IBM */ if (device_id == 0x0046 || device_id == 0xFFFF) { /* MPIC & MPIC2 */ devpciR3BiosInitSetRegionAddress(pDevIns, pBus, pPciDev, 0, 0x80800000 + 0x00040000); devpciR3SetWord(pDevIns, pPciDev, PCI_COMMAND, devpciR3GetWord(pPciDev, PCI_COMMAND) | PCI_COMMAND_MEMACCESS); } } break; case 0xff00: if ( (vendor_id == 0x0106b) && (device_id == 0x0017 || device_id == 0x0022)) { /* macio bridge */ devpciR3BiosInitSetRegionAddress(pDevIns, pBus, pPciDev, 0, 0x80800000); devpciR3SetWord(pDevIns, pPciDev, PCI_COMMAND, devpciR3GetWord(pPciDev, PCI_COMMAND) | PCI_COMMAND_MEMACCESS); } break; case 0x0604: { /* Init PCI-to-PCI bridge. */ devpciR3SetByte(pDevIns, pPciDev, VBOX_PCI_PRIMARY_BUS, pBus->iBus); AssertMsg(pGlobals->uPciBiosBus < 255, ("Too many bridges on the bus\n")); pGlobals->uPciBiosBus++; devpciR3SetByte(pDevIns, pPciDev, VBOX_PCI_SECONDARY_BUS, pGlobals->uPciBiosBus); devpciR3SetByte(pDevIns, pPciDev, VBOX_PCI_SUBORDINATE_BUS, 0xff); /* Temporary until we know how many other bridges are behind this one. */ /* Add position of this bridge into the array. */ paBridgePositions[cBridgeDepth+1] = (pPciDev->uDevFn >> 3); /* * The I/O range for the bridge must be aligned to a 4KB boundary. * This does not change anything really as the access to the device is not going * through the bridge but we want to be compliant to the spec. */ if ((pGlobals->uPciBiosIo % _4K) != 0) pGlobals->uPciBiosIo = RT_ALIGN_32(pGlobals->uPciBiosIo, _4K); LogFunc(("Aligned I/O start address. New address %#x\n", pGlobals->uPciBiosIo)); devpciR3SetByte(pDevIns, pPciDev, VBOX_PCI_IO_BASE, (pGlobals->uPciBiosIo >> 8) & 0xf0); /* The MMIO range for the bridge must be aligned to a 1MB boundary. */ if ((pGlobals->uPciBiosMmio % _1M) != 0) pGlobals->uPciBiosMmio = RT_ALIGN_32(pGlobals->uPciBiosMmio, _1M); LogFunc(("Aligned MMIO start address. New address %#x\n", pGlobals->uPciBiosMmio)); devpciR3SetWord(pDevIns, pPciDev, VBOX_PCI_MEMORY_BASE, (pGlobals->uPciBiosMmio >> 16) & UINT32_C(0xffff0)); /* Save values to compare later to. */ uint32_t u32IoAddressBase = pGlobals->uPciBiosIo; uint32_t u32MMIOAddressBase = pGlobals->uPciBiosMmio; /* Init devices behind the bridge and possibly other bridges as well. */ PDEVPCIBUS pChildBus = PDMINS_2_DATA(pPciDev->Int.s.CTX_SUFF(pDevIns), PDEVPCIBUS); for (uint32_t uDevFn = 0; uDevFn < RT_ELEMENTS(pChildBus->apDevices); uDevFn++) { PPDMPCIDEV pChildPciDev = pChildBus->apDevices[uDevFn]; if (pChildPciDev) pci_bios_init_device(pDevIns, pGlobals, pChildBus, pChildPciDev, cBridgeDepth + 1, paBridgePositions); } /* The number of bridges behind the this one is now available. */ devpciR3SetByte(pDevIns, pPciDev, VBOX_PCI_SUBORDINATE_BUS, pGlobals->uPciBiosBus); /* * Set I/O limit register. If there is no device with I/O space behind the bridge * we set a lower value than in the base register. * The result with a real bridge is that no I/O transactions are passed to the secondary * interface. Again this doesn't really matter here but we want to be compliant to the spec. */ if ((u32IoAddressBase != pGlobals->uPciBiosIo) && ((pGlobals->uPciBiosIo % _4K) != 0)) { /* The upper boundary must be one byte less than a 4KB boundary. */ pGlobals->uPciBiosIo = RT_ALIGN_32(pGlobals->uPciBiosIo, _4K); } devpciR3SetByte(pDevIns, pPciDev, VBOX_PCI_IO_LIMIT, ((pGlobals->uPciBiosIo >> 8) & 0xf0) - 1); /* Same with the MMIO limit register but with 1MB boundary here. */ if ((u32MMIOAddressBase != pGlobals->uPciBiosMmio) && ((pGlobals->uPciBiosMmio % _1M) != 0)) { /* The upper boundary must be one byte less than a 1MB boundary. */ pGlobals->uPciBiosMmio = RT_ALIGN_32(pGlobals->uPciBiosMmio, _1M); } devpciR3SetWord(pDevIns, pPciDev, VBOX_PCI_MEMORY_LIMIT, ((pGlobals->uPciBiosMmio >> 16) & UINT32_C(0xfff0)) - 1); /* * Set the prefetch base and limit registers. We currently have no device with a prefetchable region * which may be behind a bridge. That's why it is unconditionally disabled here atm by writing a higher value into * the base register than in the limit register. */ devpciR3SetWord(pDevIns, pPciDev, VBOX_PCI_PREF_MEMORY_BASE, 0xfff0); devpciR3SetWord(pDevIns, pPciDev, VBOX_PCI_PREF_MEMORY_LIMIT, 0x0); devpciR3SetDWord(pDevIns, pPciDev, VBOX_PCI_PREF_BASE_UPPER32, 0x00); devpciR3SetDWord(pDevIns, pPciDev, VBOX_PCI_PREF_LIMIT_UPPER32, 0x00); break; } default: default_map: { /* default memory mappings */ bool fActiveMemRegion = false; bool fActiveIORegion = false; /* * PCI_NUM_REGIONS is 7 because of the rom region but there are only 6 base address register defined by the PCI spec. * Leaving only PCI_NUM_REGIONS would cause reading another and enabling a memory region which does not exist. */ for (unsigned i = 0; i < (PCI_NUM_REGIONS-1); i++) { uint32_t u32Size; uint8_t u8ResourceType; uint32_t u32Address = 0x10 + i * 4; /* Calculate size. */ u8ResourceType = devpciR3GetByte(pPciDev, u32Address); devpciR3SetDWord(pDevIns, pPciDev, u32Address, UINT32_C(0xffffffff)); u32Size = devpciR3GetDWord(pPciDev, u32Address); bool fIsPio = ((u8ResourceType & PCI_COMMAND_IOACCESS) == PCI_COMMAND_IOACCESS); /* Clear resource information depending on resource type. */ if (fIsPio) /* I/O */ u32Size &= ~(0x01); else /* MMIO */ u32Size &= ~(0x0f); /* * Invert all bits and add 1 to get size of the region. * (From PCI implementation note) */ if (fIsPio && (u32Size & UINT32_C(0xffff0000)) == 0) u32Size = (~(u32Size | UINT32_C(0xffff0000))) + 1; else u32Size = (~u32Size) + 1; Log2Func(("Size of region %u for device %d on bus %d is %u\n", i, pPciDev->uDevFn, pBus->iBus, u32Size)); if (u32Size) { if (fIsPio) paddr = &pGlobals->uPciBiosIo; else { paddr = &pGlobals->uPciBiosMmio; if (devclass == 0x0300) { /* * Because legacy VGA I/O ports are implicitly decoded * by a VGA class device without needing a BAR, we must * enable I/O decoding for such devices. */ fActiveIORegion = true; if (vendor_id == 0x80ee || vendor_id == 0x15ad) { bool fPrefetch = (u8ResourceType & ((uint8_t)(PCI_ADDRESS_SPACE_MEM_PREFETCH | PCI_ADDRESS_SPACE_IO))) == PCI_ADDRESS_SPACE_MEM_PREFETCH; /* VGA: map frame buffer to default Bochs VBE address. Only * needed for legacy guest drivers. */ if (fPrefetch) paddr = &uPciBiosSpecialVRAM; } } } uint32_t uNew = *paddr; uNew = (uNew + u32Size - 1) & ~(u32Size - 1); if (fIsPio) uNew &= UINT32_C(0xffff); /* Unconditionally exclude I/O-APIC/HPET/ROM. Pessimistic, but better than causing a mess. */ if (!uNew || (uNew <= UINT32_C(0xffffffff) && uNew + u32Size - 1 >= UINT32_C(0xfec00000))) { LogRel(("PCI: no space left for BAR%u of device %u/%u/%u (vendor=%#06x device=%#06x)\n", i, pBus->iBus, pPciDev->uDevFn >> 3, pPciDev->uDevFn & 7, vendor_id, device_id)); /** @todo make this a VM start failure later. */ /* Undo the mapping mess caused by the size probing. */ devpciR3SetDWord(pDevIns, pPciDev, u32Address, UINT32_C(0)); } else { LogFunc(("Start address of %s region %u is %#x\n", (fIsPio ? "I/O" : "MMIO"), i, uNew)); devpciR3BiosInitSetRegionAddress(pDevIns, pBus, pPciDev, i, uNew); if (fIsPio) fActiveIORegion = true; else fActiveMemRegion = true; *paddr = uNew + u32Size; Log2Func(("New address is %#x\n", *paddr)); } } } /* Update the command word appropriately. */ devpciR3SetWord(pDevIns, pPciDev, PCI_COMMAND, devpciR3GetWord(pPciDev, PCI_COMMAND) | (fActiveMemRegion ? PCI_COMMAND_MEMACCESS : 0) | (fActiveIORegion ? PCI_COMMAND_IOACCESS : 0)); break; } } /* map the interrupt */ pin = devpciR3GetByte(pPciDev, PCI_INTERRUPT_PIN); if (pin != 0) { uint8_t uBridgeDevFn = pPciDev->uDevFn; pin--; /* We need to go up to the host bus to see which irq this device will assert there. */ while (cBridgeDepth != 0) { /* Get the pin the device would assert on the bridge. */ pin = ((uBridgeDevFn >> 3) + pin) & 3; uBridgeDevFn = paBridgePositions[cBridgeDepth]; cBridgeDepth--; } pin = pci_slot_get_pirq(pPciDev->uDevFn, pin); pic_irq = pci_irqs[pin]; devpciR3SetByte(pDevIns, pPciDev, PCI_INTERRUPT_LINE, pic_irq); } } } /** * Worker for Fake PCI BIOS config, triggered by magic port access by BIOS. * * @returns VBox status code. * * @param pDevIns i440FX device instance. */ static int pciR3FakePCIBIOS(PPDMDEVINS pDevIns) { uint8_t elcr[2] = {0, 0}; PDEVPCIROOT pGlobals = PDMINS_2_DATA(pDevIns, PDEVPCIROOT); LogRel(("PCI: Setting up resources and interrupts\n")); /* * Set the start addresses. */ pGlobals->uPciBiosBus = 0; pGlobals->uPciBiosIo = 0xd000; pGlobals->uPciBiosMmio = UINT32_C(0xf0000000); /* * Activate IRQ mappings. */ PPDMPCIDEV pPIIX3 = pDevIns->apPciDevs[1]; for (unsigned i = 0; i < 4; i++) { uint8_t irq = pci_irqs[i]; /* Set to trigger level. */ elcr[irq >> 3] |= (1 << (irq & 7)); /* Activate irq remapping in PIIX3. */ devpciR3SetByte(pDevIns, pPIIX3, 0x60 + i, irq); } /* Tell to the PIC. */ /** @todo r=aeichner We should really move this to the BIOS code and get rid of this fake PCI BIOS thing, * DevPciIch9.cpp lacks this code and has a todo for this. */ VBOXSTRICTRC rcStrict = pDevIns->pHlpR3->pfnIoPortWrite(pDevIns, 0x4d0, elcr[0], sizeof(uint8_t)); if (rcStrict == VINF_SUCCESS) rcStrict = pDevIns->pHlpR3->pfnIoPortWrite(pDevIns, 0x4d1, elcr[1], sizeof(uint8_t)); if (rcStrict != VINF_SUCCESS) { AssertMsgFailed(("Writing to PIC failed! rcStrict=%Rrc\n", VBOXSTRICTRC_VAL(rcStrict))); return RT_SUCCESS(rcStrict) ? VERR_INTERNAL_ERROR : VBOXSTRICTRC_VAL(rcStrict); } /* * Init the devices. */ PDEVPCIBUS pBus = &pGlobals->PciBus; for (uint32_t uDevFn = 0; uDevFn < RT_ELEMENTS(pBus->apDevices); uDevFn++) { PPDMPCIDEV pPciDev = pBus->apDevices[uDevFn]; if (pPciDev) { Log2(("PCI: Initializing device %d (%#x)\n", uDevFn, 0x80000000 | (uDevFn << 8))); uint8_t aBridgePositions[256]; RT_ZERO(aBridgePositions); pci_bios_init_device(pDevIns, pGlobals, pBus, pPciDev, 0, aBridgePositions); } } return VINF_SUCCESS; } #endif /* IN_RING3 */ /* -=-=-=-=-=- I/O ports -=-=-=-=-=- */ /** * @callback_method_impl{FNIOMIOPORTNEWOUT, PCI address} */ static DECLCALLBACK(VBOXSTRICTRC) pciIOPortAddressWrite(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT offPort, uint32_t u32, unsigned cb) { LogFunc(("offPort=%#x u32=%#x cb=%d\n", offPort, u32, cb)); Assert(offPort == 0); RT_NOREF2(offPort, pvUser); if (cb == 4) { PDEVPCIROOT pThis = PDMINS_2_DATA(pDevIns, PDEVPCIROOT); PCI_LOCK_RET(pDevIns, VINF_IOM_R3_IOPORT_WRITE); pThis->uConfigReg = u32 & ~3; /* Bits 0-1 are reserved and we silently clear them */ PCI_UNLOCK(pDevIns); } /* else: 440FX does "pass through to the bus" for other writes, what ever that means. * Linux probes for cmd640 using byte writes/reads during ide init. We'll just ignore it. */ return VINF_SUCCESS; } /** * @callback_method_impl{FNIOMIOPORTNEWIN, PCI address} */ static DECLCALLBACK(VBOXSTRICTRC) pciIOPortAddressRead(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT offPort, uint32_t *pu32, unsigned cb) { Assert(offPort == 0); RT_NOREF2(offPort, pvUser); if (cb == 4) { PDEVPCIROOT pThis = PDMINS_2_DATA(pDevIns, PDEVPCIROOT); PCI_LOCK_RET(pDevIns, VINF_IOM_R3_IOPORT_READ); *pu32 = pThis->uConfigReg; PCI_UNLOCK(pDevIns); LogFunc(("offPort=%#x cb=%d -> %#x\n", offPort, cb, *pu32)); return VINF_SUCCESS; } /* else: 440FX does "pass through to the bus" for other writes, what ever that means. * Linux probes for cmd640 using byte writes/reads during ide init. We'll just ignore it. */ LogFunc(("offPort=%#x cb=%d VERR_IOM_IOPORT_UNUSED\n", offPort, cb)); return VERR_IOM_IOPORT_UNUSED; } /** * @callback_method_impl{FNIOMIOPORTNEWOUT, PCI data} */ static DECLCALLBACK(VBOXSTRICTRC) pciIOPortDataWrite(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT offPort, uint32_t u32, unsigned cb) { LogFunc(("offPort=%#x u32=%#x cb=%d\n", offPort, u32, cb)); Assert(offPort < 4); NOREF(pvUser); VBOXSTRICTRC rcStrict = VINF_SUCCESS; if (!(offPort % cb)) { PCI_LOCK_RET(pDevIns, VINF_IOM_R3_IOPORT_WRITE); rcStrict = pci_data_write(pDevIns, PDMINS_2_DATA(pDevIns, PDEVPCIROOT), offPort, u32, cb); PCI_UNLOCK(pDevIns); } else AssertMsgFailed(("Write to port %#x u32=%#x cb=%d\n", offPort, u32, cb)); return rcStrict; } /** * @callback_method_impl{FNIOMIOPORTNEWIN, PCI data} */ static DECLCALLBACK(VBOXSTRICTRC) pciIOPortDataRead(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT offPort, uint32_t *pu32, unsigned cb) { Assert(offPort < 4); NOREF(pvUser); if (!(offPort % cb)) { PCI_LOCK_RET(pDevIns, VINF_IOM_R3_IOPORT_READ); VBOXSTRICTRC rcStrict = pci_data_read(PDMINS_2_DATA(pDevIns, PDEVPCIROOT), offPort, cb, pu32); PCI_UNLOCK(pDevIns); LogFunc(("offPort=%#x cb=%#x -> %#x (%Rrc)\n", offPort, cb, *pu32, VBOXSTRICTRC_VAL(rcStrict))); return rcStrict; } AssertMsgFailed(("Read from port %#x cb=%d\n", offPort, cb)); return VERR_IOM_IOPORT_UNUSED; } #ifdef IN_RING3 /** * @callback_method_impl{FNIOMIOPORTNEWOUT, PCI data} */ static DECLCALLBACK(VBOXSTRICTRC) pciR3IOPortMagicPCIWrite(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT offPort, uint32_t u32, unsigned cb) { Assert(offPort == 0); RT_NOREF2(pvUser, offPort); LogFunc(("offPort=%#x u32=%#x cb=%d\n", offPort, u32, cb)); if (cb == 4) { if (u32 == UINT32_C(19200509)) // Richard Adams - Note! In decimal rather hex. { int rc = pciR3FakePCIBIOS(pDevIns); AssertRC(rc); } } return VINF_SUCCESS; } /** * @callback_method_impl{FNIOMIOPORTNEWIN, PCI data} */ static DECLCALLBACK(VBOXSTRICTRC) pciR3IOPortMagicPCIRead(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT offPort, uint32_t *pu32, unsigned cb) { Assert(offPort == 0); RT_NOREF5(pDevIns, pvUser, offPort, pu32, cb); LogFunc(("offPort=%#x cb=%d VERR_IOM_IOPORT_UNUSED\n", offPort, cb)); return VERR_IOM_IOPORT_UNUSED; } /* -=-=-=-=-=- Saved state -=-=-=-=-=- */ /** * Common worker for pciR3SaveExec and pcibridgeR3SaveExec. * * @returns VBox status code. * @param pHlp The device helpers. * @param pBus The bus to save. * @param pSSM The saved state handle. */ static int pciR3CommonSaveExec(PCPDMDEVHLPR3 pHlp, PDEVPCIBUS pBus, PSSMHANDLE pSSM) { /* * Iterate thru all the devices. */ for (uint32_t uDevFn = 0; uDevFn < RT_ELEMENTS(pBus->apDevices); uDevFn++) { PPDMPCIDEV pDev = pBus->apDevices[uDevFn]; if (pDev) { pHlp->pfnSSMPutU32(pSSM, uDevFn); pHlp->pfnSSMPutMem(pSSM, pDev->abConfig, 256); /* Only save 256 bytes here! */ pHlp->pfnSSMPutS32(pSSM, pDev->Int.s.uIrqPinState); /* Save the type an size of all the regions. */ for (uint32_t iRegion = 0; iRegion < VBOX_PCI_NUM_REGIONS; iRegion++) { pHlp->pfnSSMPutU8(pSSM, pDev->Int.s.aIORegions[iRegion].type); pHlp->pfnSSMPutU64(pSSM, pDev->Int.s.aIORegions[iRegion].size); } } } return pHlp->pfnSSMPutU32(pSSM, UINT32_MAX); /* terminator */ } /** * @callback_method_impl{FNSSMDEVSAVEEXEC} */ static DECLCALLBACK(int) pciR3SaveExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM) { PDEVPCIROOT pThis = PDMINS_2_DATA(pDevIns, PDEVPCIROOT); PCPDMDEVHLPR3 pHlp = pDevIns->pHlpR3; /* * Bus state data. */ pHlp->pfnSSMPutU32(pSSM, pThis->uConfigReg); pHlp->pfnSSMPutBool(pSSM, pThis->fUseIoApic); /* * Save IRQ states. */ for (unsigned i = 0; i < RT_ELEMENTS(pThis->Piix3.auPciLegacyIrqLevels); i++) pHlp->pfnSSMPutU32(pSSM, pThis->Piix3.auPciLegacyIrqLevels[i]); for (unsigned i = 0; i < RT_ELEMENTS(pThis->auPciApicIrqLevels); i++) pHlp->pfnSSMPutU32(pSSM, pThis->auPciApicIrqLevels[i]); pHlp->pfnSSMPutU32(pSSM, pThis->Piix3.iAcpiIrqLevel); pHlp->pfnSSMPutS32(pSSM, pThis->Piix3.iAcpiIrq); pHlp->pfnSSMPutU32(pSSM, UINT32_MAX); /* separator */ /* * Join paths with pcibridgeR3SaveExec. */ return pciR3CommonSaveExec(pHlp, &pThis->PciBus, pSSM); } /** * Common worker for pciR3LoadExec and pcibridgeR3LoadExec. * * @returns VBox status code. * @param pDevIns The device instance. * @param pBus The bus which data is being loaded. * @param pSSM The saved state handle. * @param uVersion The data version. * @param uPass The pass. */ static int pciR3CommonLoadExec(PPDMDEVINS pDevIns, PDEVPCIBUS pBus, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass) { PCPDMDEVHLPR3 pHlp = pDevIns->pHlpR3; uint32_t u32; int rc; Assert(uPass == SSM_PASS_FINAL); NOREF(uPass); /* * Iterate thru all the devices and write 0 to the COMMAND register so * that all the memory is unmapped before we start restoring the saved * mapping locations. * * The register value is restored afterwards so we can do proper * LogRels in devpciR3CommonRestoreConfig. */ for (uint32_t uDevFn = 0; uDevFn < RT_ELEMENTS(pBus->apDevices); uDevFn++) { PPDMPCIDEV pDev = pBus->apDevices[uDevFn]; if (pDev) { uint16_t u16 = PCIDevGetCommand(pDev); devpciR3SetCfg(pDevIns, pDev, VBOX_PCI_COMMAND, 0 /*u32Value*/, 2 /*cb*/); PCIDevSetCommand(pDev, u16); Assert(PCIDevGetCommand(pDev) == u16); } } /* * Iterate all the devices. */ for (uint32_t uDevFn = 0;; uDevFn++) { /* index / terminator */ rc = pHlp->pfnSSMGetU32(pSSM, &u32); if (RT_FAILURE(rc)) return rc; if (u32 == UINT32_MAX) break; if ( u32 >= RT_ELEMENTS(pBus->apDevices) || u32 < uDevFn) { AssertMsgFailed(("u32=%#x uDevFn=%#x\n", u32, uDevFn)); return rc; } /* skip forward to the device checking that no new devices are present. */ for (; uDevFn < u32; uDevFn++) { if (pBus->apDevices[uDevFn]) { LogRel(("PCI: New device in slot %#x, %s (vendor=%#06x device=%#06x)\n", uDevFn, pBus->apDevices[uDevFn]->pszNameR3, PCIDevGetVendorId(pBus->apDevices[uDevFn]), PCIDevGetDeviceId(pBus->apDevices[uDevFn]))); if (pHlp->pfnSSMHandleGetAfter(pSSM) != SSMAFTER_DEBUG_IT) return pHlp->pfnSSMSetCfgError(pSSM, RT_SRC_POS, N_("New device in slot %#x, %s (vendor=%#06x device=%#06x)"), uDevFn, pBus->apDevices[uDevFn]->pszNameR3, PCIDevGetVendorId(pBus->apDevices[uDevFn]), PCIDevGetDeviceId(pBus->apDevices[uDevFn])); } } /* get the data */ union { PDMPCIDEV DevTmp; uint8_t abDevTmpPadding[RT_UOFFSETOF(PDMPCIDEV, abMsixState)]; } u; RT_ZERO(u.DevTmp); u.DevTmp.Int.s.uIrqPinState = ~0; /* Invalid value in case we have an older saved state to force a state change in pciSetIrq. */ pHlp->pfnSSMGetMem(pSSM, u.DevTmp.abConfig, 256); if (uVersion < VBOX_PCI_SAVED_STATE_VERSION_IRQ_STATES) { int32_t i32Temp; /* Irq value not needed anymore. */ rc = pHlp->pfnSSMGetS32(pSSM, &i32Temp); if (RT_FAILURE(rc)) return rc; } else { rc = pHlp->pfnSSMGetS32(pSSM, &u.DevTmp.Int.s.uIrqPinState); if (RT_FAILURE(rc)) return rc; } /* Load the region types and sizes. */ if (uVersion >= VBOX_PCI_SAVED_STATE_VERSION_REGION_SIZES) { for (uint32_t iRegion = 0; iRegion < VBOX_PCI_NUM_REGIONS; iRegion++) { pHlp->pfnSSMGetU8(pSSM, &u.DevTmp.Int.s.aIORegions[iRegion].type); rc = pHlp->pfnSSMGetU64(pSSM, &u.DevTmp.Int.s.aIORegions[iRegion].size); AssertLogRelRCReturn(rc, rc); } } /* check that it's still around. */ PPDMPCIDEV pDev = pBus->apDevices[uDevFn]; if (!pDev) { LogRel(("PCI: Device in slot %#x has been removed! vendor=%#06x device=%#06x\n", uDevFn, PCIDevGetVendorId(&u.DevTmp), PCIDevGetDeviceId(&u.DevTmp))); if (pHlp->pfnSSMHandleGetAfter(pSSM) != SSMAFTER_DEBUG_IT) return pHlp->pfnSSMSetCfgError(pSSM, RT_SRC_POS, N_("Device in slot %#x has been removed! vendor=%#06x device=%#06x"), uDevFn, PCIDevGetVendorId(&u.DevTmp), PCIDevGetDeviceId(&u.DevTmp)); continue; } /* match the vendor id assuming that this will never be changed. */ if ( u.DevTmp.abConfig[0] != pDev->abConfig[0] || u.DevTmp.abConfig[1] != pDev->abConfig[1]) return pHlp->pfnSSMSetCfgError(pSSM, RT_SRC_POS, N_("Device in slot %#x (%s) vendor id mismatch! saved=%.4Rhxs current=%.4Rhxs"), uDevFn, pDev->pszNameR3, u.DevTmp.abConfig, pDev->abConfig); /* commit the loaded device config. */ rc = devpciR3CommonRestoreRegions(pHlp, pSSM, pDev, u.DevTmp.Int.s.aIORegions, uVersion >= VBOX_PCI_SAVED_STATE_VERSION_REGION_SIZES); if (RT_FAILURE(rc)) break; devpciR3CommonRestoreConfig(pDevIns, pDev, &u.DevTmp.abConfig[0]); pDev->Int.s.uIrqPinState = u.DevTmp.Int.s.uIrqPinState; } return VINF_SUCCESS; } /** * @callback_method_impl{FNSSMDEVLOADEXEC} */ static DECLCALLBACK(int) pciR3LoadExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass) { PDEVPCIROOT pThis = PDMINS_2_DATA(pDevIns, PDEVPCIROOT); PDEVPCIBUS pBus = &pThis->PciBus; PCPDMDEVHLPR3 pHlp = pDevIns->pHlpR3; uint32_t u32; int rc; /* * Check the version. */ if (uVersion > VBOX_PCI_SAVED_STATE_VERSION) return VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION; Assert(uPass == SSM_PASS_FINAL); NOREF(uPass); /* * Bus state data. */ pHlp->pfnSSMGetU32(pSSM, &pThis->uConfigReg); if (uVersion >= VBOX_PCI_SAVED_STATE_VERSION_USE_IO_APIC) pHlp->pfnSSMGetBool(pSSM, &pThis->fUseIoApic); /* Load IRQ states. */ if (uVersion >= VBOX_PCI_SAVED_STATE_VERSION_IRQ_STATES) { for (uint8_t i = 0; i < RT_ELEMENTS(pThis->Piix3.auPciLegacyIrqLevels); i++) pHlp->pfnSSMGetU32V(pSSM, &pThis->Piix3.auPciLegacyIrqLevels[i]); for (uint8_t i = 0; i < RT_ELEMENTS(pThis->auPciApicIrqLevels); i++) pHlp->pfnSSMGetU32V(pSSM, &pThis->auPciApicIrqLevels[i]); pHlp->pfnSSMGetU32(pSSM, &pThis->Piix3.iAcpiIrqLevel); pHlp->pfnSSMGetS32(pSSM, &pThis->Piix3.iAcpiIrq); } /* separator */ rc = pHlp->pfnSSMGetU32(pSSM, &u32); if (RT_FAILURE(rc)) return rc; if (u32 != UINT32_MAX) AssertMsgFailedReturn(("u32=%#x\n", u32), rc); /* * The devices. */ return pciR3CommonLoadExec(pDevIns, pBus, pSSM, uVersion, uPass); } /* -=-=-=-=-=- PCI Bus Interface Methods (PDMPCIBUSREG) -=-=-=-=-=- */ /* -=-=-=-=-=- Debug Info Handlers -=-=-=-=-=- */ /** * @callback_method_impl{FNDBGFHANDLERDEV} */ static DECLCALLBACK(void) pciR3IrqRouteInfo(PPDMDEVINS pDevIns, PCDBGFINFOHLP pHlp, const char *pszArgs) { PPDMPCIDEV pPIIX3 = pDevIns->apPciDevs[1]; NOREF(pszArgs); uint16_t router = pPIIX3->uDevFn; pHlp->pfnPrintf(pHlp, "PCI interrupt router at: %02X:%02X:%X\n", router >> 8, (router >> 3) & 0x1f, router & 0x7); for (int i = 0; i < 4; ++i) { uint8_t irq_map = devpciR3GetByte(pPIIX3, 0x60 + i); if (irq_map & 0x80) pHlp->pfnPrintf(pHlp, "PIRQ%c disabled\n", 'A' + i); else pHlp->pfnPrintf(pHlp, "PIRQ%c -> IRQ%d\n", 'A' + i, irq_map & 0xf); } } /** * @callback_method_impl{FNDBGFHANDLERDEV, 'pirq'} */ DECLCALLBACK(void) devpciR3InfoPIRQ(PPDMDEVINS pDevIns, PCDBGFINFOHLP pHlp, const char *pszArgs) { PDEVPCIROOT pGlobals = PDMINS_2_DATA(pDevIns, PDEVPCIROOT); NOREF(pszArgs); pHlp->pfnPrintf(pHlp, "PCI IRQ levels:\n"); for (int i = 0; i < DEVPCI_LEGACY_IRQ_PINS; ++i) pHlp->pfnPrintf(pHlp, " IRQ%c: %u\n", 'A' + i, pGlobals->Piix3.auPciLegacyIrqLevels[i]); } /* -=-=-=-=-=- PDMDEVREG -=-=-=-=-=- */ /** * @interface_method_impl{PDMDEVREG,pfnReset} */ static DECLCALLBACK(void) pciR3Reset(PPDMDEVINS pDevIns) { PDEVPCIROOT pGlobals = PDMINS_2_DATA(pDevIns, PDEVPCIROOT); PDEVPCIBUS pBus = &pGlobals->PciBus; /* PCI-specific reset for each device. */ for (uint32_t uDevFn = 0; uDevFn < RT_ELEMENTS(pBus->apDevices); uDevFn++) { if (pBus->apDevices[uDevFn]) devpciR3ResetDevice(pDevIns, pBus->apDevices[uDevFn]); } pciR3Piix3Reset(pDevIns->apPciDevs[1]); } /** * @interface_method_impl{PDMDEVREG,pfnDestruct} */ static DECLCALLBACK(int) pciR3Destruct(PPDMDEVINS pDevIns) { PDEVPCIROOT pGlobals = PDMINS_2_DATA(pDevIns, PDEVPCIROOT); if (pGlobals->PciBus.papBridgesR3) { PDMDevHlpMMHeapFree(pDevIns, pGlobals->PciBus.papBridgesR3); pGlobals->PciBus.papBridgesR3 = NULL; } return VINF_SUCCESS; } /** * @interface_method_impl{PDMDEVREG,pfnConstruct} */ static DECLCALLBACK(int) pciR3Construct(PPDMDEVINS pDevIns, int iInstance, PCFGMNODE pCfg) { PDMDEV_CHECK_VERSIONS_RETURN(pDevIns); PCPDMDEVHLPR3 pHlp = pDevIns->pHlpR3; PDEVPCIBUSCC pBusCC = PDMINS_2_DATA_CC(pDevIns, PDEVPCIBUSCC); PDEVPCIROOT pGlobals = PDMINS_2_DATA(pDevIns, PDEVPCIROOT); RT_NOREF(iInstance); Assert(iInstance == 0); /* * Validate and read configuration. */ PDMDEV_VALIDATE_CONFIG_RETURN(pDevIns, "IOAPIC", ""); /* query whether we got an IOAPIC */ bool fUseIoApic; int rc = pHlp->pfnCFGMQueryBoolDef(pCfg, "IOAPIC", &fUseIoApic, false); if (RT_FAILURE(rc)) return PDMDEV_SET_ERROR(pDevIns, rc, N_("Configuration error: Failed to query boolean value \"IOAPIC\"")); Log(("PCI: fUseIoApic=%RTbool fR0Enabled=%RTbool fRCEnabled=%RTbool\n", fUseIoApic, pDevIns->fR0Enabled, pDevIns->fRCEnabled)); /* * Init data and register the PCI bus. */ pGlobals->uPciBiosIo = 0xc000; pGlobals->uPciBiosMmio = 0xf0000000; memset((void *)&pGlobals->Piix3.auPciLegacyIrqLevels, 0, sizeof(pGlobals->Piix3.auPciLegacyIrqLevels)); pGlobals->fUseIoApic = fUseIoApic; memset((void *)&pGlobals->auPciApicIrqLevels, 0, sizeof(pGlobals->auPciApicIrqLevels)); pGlobals->PciBus.fTypePiix3 = true; pGlobals->PciBus.fTypeIch9 = false; pGlobals->PciBus.fPureBridge = false; pGlobals->PciBus.papBridgesR3 = (PPDMPCIDEV *)PDMDevHlpMMHeapAllocZ(pDevIns, sizeof(PPDMPCIDEV) * RT_ELEMENTS(pGlobals->PciBus.apDevices)); AssertLogRelReturn(pGlobals->PciBus.papBridgesR3, VERR_NO_MEMORY); PDEVPCIBUS pBus = &pGlobals->PciBus; PDMPCIBUSREGCC PciBusReg; PciBusReg.u32Version = PDM_PCIBUSREGCC_VERSION; PciBusReg.pfnRegisterR3 = devpciR3CommonRegisterDevice; PciBusReg.pfnRegisterMsiR3 = NULL; PciBusReg.pfnIORegionRegisterR3 = devpciR3CommonIORegionRegister; PciBusReg.pfnInterceptConfigAccesses = devpciR3CommonInterceptConfigAccesses; PciBusReg.pfnConfigRead = devpciR3CommonConfigRead; PciBusReg.pfnConfigWrite = devpciR3CommonConfigWrite; PciBusReg.pfnSetIrqR3 = pciSetIrq; PciBusReg.u32EndVersion = PDM_PCIBUSREGCC_VERSION; rc = PDMDevHlpPCIBusRegister(pDevIns, &PciBusReg, &pBusCC->pPciHlpR3, &pBus->iBus); if (RT_FAILURE(rc)) return PDMDEV_SET_ERROR(pDevIns, rc, N_("Failed to register ourselves as a PCI Bus")); Assert(pBus->iBus == 0); if (pBusCC->pPciHlpR3->u32Version != PDM_PCIHLPR3_VERSION) return PDMDevHlpVMSetError(pDevIns, VERR_VERSION_MISMATCH, RT_SRC_POS, N_("PCI helper version mismatch; got %#x expected %#x"), pBusCC->pPciHlpR3->u32Version, PDM_PCIHLPR3_VERSION); /* Disable default device locking. */ rc = PDMDevHlpSetDeviceCritSect(pDevIns, PDMDevHlpCritSectGetNop(pDevIns)); AssertRCReturn(rc, rc); /* * Fill in PCI configs and add them to the bus. */ PPDMPCIDEV pPciDev = pDevIns->apPciDevs[0]; AssertPtr(pPciDev); /* i440FX */ PCIDevSetVendorId( pPciDev, 0x8086); /* Intel */ PCIDevSetDeviceId( pPciDev, 0x1237); PCIDevSetRevisionId(pPciDev, 0x02); PCIDevSetClassSub( pPciDev, 0x00); /* host2pci */ PCIDevSetClassBase( pPciDev, 0x06); /* PCI_bridge */ PCIDevSetHeaderType(pPciDev, 0x00); rc = PDMDevHlpPCIRegisterEx(pDevIns, pPciDev, 0 /*fFlags*/, 0 /*uPciDevNo*/, 0 /*uPciFunNo*/, "i440FX"); AssertLogRelRCReturn(rc, rc); /* PIIX3 */ PPDMPCIDEV pPiix3PciDev = pDevIns->apPciDevs[1]; PCIDevSetVendorId( pPiix3PciDev, 0x8086); /* Intel */ PCIDevSetDeviceId( pPiix3PciDev, 0x7000); /* 82371SB PIIX3 PCI-to-ISA bridge (Step A1) */ PCIDevSetClassSub( pPiix3PciDev, 0x01); /* PCI_ISA */ PCIDevSetClassBase( pPiix3PciDev, 0x06); /* PCI_bridge */ PCIDevSetHeaderType(pPiix3PciDev, 0x80); /* PCI_multifunction, generic */ rc = PDMDevHlpPCIRegisterEx(pDevIns, pPiix3PciDev, 0 /*fFlags*/, 1 /*uPciDevNo*/, 0 /*uPciFunNo*/, "PIIX3"); AssertLogRelRCReturn(rc, rc); pciR3Piix3Reset(pDevIns->apPciDevs[1]); pBus->iDevSearch = 16; /* * Register I/O ports and save state. */ static const IOMIOPORTDESC s_aAddrDesc[] = { { "PCI address", "PCI address", NULL, NULL }, { NULL, NULL, NULL, NULL } }; rc = PDMDevHlpIoPortCreateAndMap(pDevIns, 0x0cf8, 1, pciIOPortAddressWrite, pciIOPortAddressRead, "i440FX (PCI)", s_aAddrDesc, &pGlobals->hIoPortAddress); AssertLogRelRCReturn(rc, rc); static const IOMIOPORTDESC s_aDataDesc[] = { { "PCI data", "PCI data", NULL, NULL }, { NULL, NULL, NULL, NULL } }; rc = PDMDevHlpIoPortCreateAndMap(pDevIns, 0x0cfc, 4, pciIOPortDataWrite, pciIOPortDataRead, "i440FX (PCI)", s_aDataDesc, &pGlobals->hIoPortData); AssertLogRelRCReturn(rc, rc); static const IOMIOPORTDESC s_aMagicDesc[] = { { "PCI magic", NULL, NULL, NULL }, { NULL, NULL, NULL, NULL } }; rc = PDMDevHlpIoPortCreateAndMap(pDevIns, 0x0410, 1, pciR3IOPortMagicPCIWrite, pciR3IOPortMagicPCIRead, "i440FX (Fake PCI BIOS trigger)", s_aMagicDesc, &pGlobals->hIoPortMagic); AssertLogRelRCReturn(rc, rc); rc = PDMDevHlpSSMRegisterEx(pDevIns, VBOX_PCI_SAVED_STATE_VERSION, sizeof(*pBus) + 16*128, "pgm", NULL, NULL, NULL, NULL, pciR3SaveExec, NULL, NULL, pciR3LoadExec, NULL); AssertLogRelRCReturn(rc, rc); PDMDevHlpDBGFInfoRegister(pDevIns, "pci", "Display PCI bus status. Recognizes 'basic' or 'verbose' as arguments, defaults to 'basic'.", devpciR3InfoPci); PDMDevHlpDBGFInfoRegister(pDevIns, "pciirq", "Display PCI IRQ state. (no arguments)", devpciR3InfoPciIrq); PDMDevHlpDBGFInfoRegister(pDevIns, "pirq", "Display PIRQ state. (no arguments)", devpciR3InfoPIRQ); PDMDevHlpDBGFInfoRegister(pDevIns, "irqroute", "Display PCI IRQ routing. (no arguments)", pciR3IrqRouteInfo); return VINF_SUCCESS; } #else /* !IN_RING3 */ /** * @interface_method_impl{PDMDEVREGR0,pfnConstruct} */ static DECLCALLBACK(int) pciRZRootConstruct(PPDMDEVINS pDevIns) { PDMDEV_CHECK_VERSIONS_RETURN(pDevIns); PDEVPCIROOT pGlobals = PDMINS_2_DATA(pDevIns, PDEVPCIROOT); PDEVPCIBUSCC pBusCC = PDMINS_2_DATA_CC(pDevIns, PDEVPCIBUSCC); /* Mirror the ring-3 device lock disabling: */ int rc = PDMDevHlpSetDeviceCritSect(pDevIns, PDMDevHlpCritSectGetNop(pDevIns)); AssertRCReturn(rc, rc); /* Set up the RZ PCI bus callbacks: */ PDMPCIBUSREGCC PciBusReg; PciBusReg.u32Version = PDM_PCIBUSREGCC_VERSION; PciBusReg.iBus = pGlobals->PciBus.iBus; PciBusReg.pfnSetIrq = pciSetIrq; PciBusReg.u32EndVersion = PDM_PCIBUSREGCC_VERSION; rc = PDMDevHlpPCIBusSetUpContext(pDevIns, &PciBusReg, &pBusCC->CTX_SUFF(pPciHlp)); AssertRCReturn(rc, rc); /* Set up I/O port callbacks, except for the magic port: */ rc = PDMDevHlpIoPortSetUpContext(pDevIns, pGlobals->hIoPortAddress, pciIOPortAddressWrite, pciIOPortAddressRead, NULL); AssertLogRelRCReturn(rc, rc); rc = PDMDevHlpIoPortSetUpContext(pDevIns, pGlobals->hIoPortData, pciIOPortDataWrite, pciIOPortDataRead, NULL); AssertLogRelRCReturn(rc, rc); return rc; } #endif /* !IN_RING3 */ /** * The device registration structure. */ const PDMDEVREG g_DevicePCI = { /* .u32Version = */ PDM_DEVREG_VERSION, /* .uReserved0 = */ 0, /* .szName = */ "pci", /* .fFlags = */ PDM_DEVREG_FLAGS_DEFAULT_BITS | PDM_DEVREG_FLAGS_RZ | PDM_DEVREG_FLAGS_NEW_STYLE, /* .fClass = */ PDM_DEVREG_CLASS_BUS_PCI, /* .cMaxInstances = */ 1, /* .uSharedVersion = */ 42, /* .cbInstanceShared = */ sizeof(DEVPCIROOT), /* .cbInstanceCC = */ sizeof(CTX_SUFF(DEVPCIBUS)), /* .cbInstanceRC = */ sizeof(DEVPCIBUSRC), /* .cMaxPciDevices = */ 2, /* .cMaxMsixVectors = */ 0, /* .pszDescription = */ "i440FX PCI bridge and PIIX3 ISA bridge.", #if defined(IN_RING3) /* .pszRCMod = */ "VBoxDDRC.rc", /* .pszR0Mod = */ "VBoxDDR0.r0", /* .pfnConstruct = */ pciR3Construct, /* .pfnDestruct = */ pciR3Destruct, /* .pfnRelocate = */ NULL, /* .pfnMemSetup = */ NULL, /* .pfnPowerOn = */ NULL, /* .pfnReset = */ pciR3Reset, /* .pfnSuspend = */ NULL, /* .pfnResume = */ NULL, /* .pfnAttach = */ NULL, /* .pfnDetach = */ NULL, /* .pfnQueryInterface = */ NULL, /* .pfnInitComplete = */ NULL, /* .pfnPowerOff = */ NULL, /* .pfnSoftReset = */ NULL, /* .pfnReserved0 = */ NULL, /* .pfnReserved1 = */ NULL, /* .pfnReserved2 = */ NULL, /* .pfnReserved3 = */ NULL, /* .pfnReserved4 = */ NULL, /* .pfnReserved5 = */ NULL, /* .pfnReserved6 = */ NULL, /* .pfnReserved7 = */ NULL, #elif defined(IN_RING0) /* .pfnEarlyConstruct = */ NULL, /* .pfnConstruct = */ pciRZRootConstruct, /* .pfnDestruct = */ NULL, /* .pfnFinalDestruct = */ NULL, /* .pfnRequest = */ NULL, /* .pfnReserved0 = */ NULL, /* .pfnReserved1 = */ NULL, /* .pfnReserved2 = */ NULL, /* .pfnReserved3 = */ NULL, /* .pfnReserved4 = */ NULL, /* .pfnReserved5 = */ NULL, /* .pfnReserved6 = */ NULL, /* .pfnReserved7 = */ NULL, #elif defined(IN_RC) /* .pfnConstruct = */ pciRZRootConstruct, /* .pfnReserved0 = */ NULL, /* .pfnReserved1 = */ NULL, /* .pfnReserved2 = */ NULL, /* .pfnReserved3 = */ NULL, /* .pfnReserved4 = */ NULL, /* .pfnReserved5 = */ NULL, /* .pfnReserved6 = */ NULL, /* .pfnReserved7 = */ NULL, #else # error "Not in IN_RING3, IN_RING0 or IN_RC!" #endif /* .u32VersionEnd = */ PDM_DEVREG_VERSION }; /* -=-=-=-=-=- The PCI bridge specific bits -=-=-=-=-=- */ /** * @interface_method_impl{PDMPCIBUSREGR3,pfnSetIrqR3} */ static DECLCALLBACK(void) pcibridgeSetIrq(PPDMDEVINS pDevIns, PPDMPCIDEV pPciDev, int iIrq, int iLevel, uint32_t uTagSrc) { LogFlow(("pcibridgeSetIrq: %p %u %u %#x\n", pPciDev, iIrq, iLevel, uTagSrc)); /* * The PCI-to-PCI bridge specification defines how the interrupt pins * are routed from the secondary to the primary bus (see chapter 9). * iIrq gives the interrupt pin the pci device asserted. * We change iIrq here according to the spec and call the SetIrq function * of our parent passing the device which asserted the interrupt instead of the device of the bridge. */ PDEVPCIBUS pBus; uint8_t uDevFnBridge; int iIrqPinBridge; PPDMDEVINS pDevInsBus = devpcibridgeCommonSetIrqRootWalk(pDevIns, pPciDev, iIrq, &pBus, &uDevFnBridge, &iIrqPinBridge); AssertReturnVoid(pDevInsBus); AssertMsg(pBus->iBus == 0, ("This is not the host pci bus iBus=%d\n", pBus->iBus)); Assert(pDevInsBus->pReg == &g_DevicePCI); pciSetIrqInternal(pDevInsBus, DEVPCIBUS_2_DEVPCIROOT(pBus), PDMINS_2_DATA_CC(pDevInsBus, PDEVPCIBUSCC), uDevFnBridge, pPciDev, iIrqPinBridge, iLevel, uTagSrc); } #ifdef IN_RING3 /** * @callback_method_impl{FNPCIBRIDGECONFIGWRITE} */ static DECLCALLBACK(VBOXSTRICTRC) pcibridgeR3ConfigWrite(PPDMDEVINSR3 pDevIns, uint8_t iBus, uint8_t iDevice, uint32_t u32Address, unsigned cb, uint32_t u32Value) { LogFlowFunc(("pDevIns=%p iBus=%d iDevice=%d u32Address=%u cb=%d u32Value=%u\n", pDevIns, iBus, iDevice, u32Address, cb, u32Value)); PDEVPCIBUS pBus = PDMINS_2_DATA(pDevIns, PDEVPCIBUS); VBOXSTRICTRC rcStrict = VINF_SUCCESS; /* If the current bus is not the target bus search for the bus which contains the device. */ if (iBus != pDevIns->apPciDevs[0]->abConfig[VBOX_PCI_SECONDARY_BUS]) { PPDMPCIDEV pBridgeDevice = pciR3FindBridge(pBus, iBus); if (pBridgeDevice) { AssertPtr(pBridgeDevice->Int.s.pfnBridgeConfigWrite); rcStrict = pBridgeDevice->Int.s.pfnBridgeConfigWrite(pBridgeDevice->Int.s.CTX_SUFF(pDevIns), iBus, iDevice, u32Address, cb, u32Value); } } else { /* This is the target bus, pass the write to the device. */ PPDMPCIDEV pPciDev = pBus->apDevices[iDevice]; if (pPciDev) { LogFunc(("%s: addr=%02x val=%08x len=%d\n", pPciDev->pszNameR3, u32Address, u32Value, cb)); rcStrict = VINF_PDM_PCI_DO_DEFAULT; if (pPciDev->Int.s.pfnConfigWrite) rcStrict = pPciDev->Int.s.pfnConfigWrite(pPciDev->Int.s.CTX_SUFF(pDevIns), pPciDev, u32Address, cb, u32Value); if (rcStrict == VINF_PDM_PCI_DO_DEFAULT) rcStrict = devpciR3CommonConfigWriteWorker(pDevIns, PDMINS_2_DATA_CC(pDevIns, PDEVPCIBUSCC), pPciDev, u32Address, cb, u32Value); } } return rcStrict; } /** * @callback_method_impl{FNPCIBRIDGECONFIGREAD} */ static DECLCALLBACK(VBOXSTRICTRC) pcibridgeR3ConfigRead(PPDMDEVINSR3 pDevIns, uint8_t iBus, uint8_t iDevice, uint32_t u32Address, unsigned cb, uint32_t *pu32Value) { LogFlowFunc(("pDevIns=%p iBus=%d iDevice=%d u32Address=%u cb=%d\n", pDevIns, iBus, iDevice, u32Address, cb)); PDEVPCIBUS pBus = PDMINS_2_DATA(pDevIns, PDEVPCIBUS); VBOXSTRICTRC rcStrict = VINF_SUCCESS; /* If the current bus is not the target bus search for the bus which contains the device. */ if (iBus != pDevIns->apPciDevs[0]->abConfig[VBOX_PCI_SECONDARY_BUS]) { PPDMPCIDEV pBridgeDevice = pciR3FindBridge(pBus, iBus); if (pBridgeDevice) { AssertPtr(pBridgeDevice->Int.s.pfnBridgeConfigRead); rcStrict = pBridgeDevice->Int.s.pfnBridgeConfigRead(pBridgeDevice->Int.s.CTX_SUFF(pDevIns), iBus, iDevice, u32Address, cb, pu32Value); } else *pu32Value = UINT32_MAX; } else { /* This is the target bus, pass the read to the device. */ PPDMPCIDEV pPciDev = pBus->apDevices[iDevice]; if (pPciDev) { rcStrict = VINF_PDM_PCI_DO_DEFAULT; if (pPciDev->Int.s.pfnConfigRead) rcStrict = pPciDev->Int.s.pfnConfigRead(pPciDev->Int.s.CTX_SUFF(pDevIns), pPciDev, u32Address, cb, pu32Value); if (rcStrict == VINF_PDM_PCI_DO_DEFAULT) rcStrict = devpciR3CommonConfigReadWorker(pPciDev, u32Address, cb, pu32Value); LogFunc(("%s: u32Address=%02x u32Value=%08x cb=%d\n", pPciDev->pszNameR3, u32Address, *pu32Value, cb)); } else *pu32Value = UINT32_MAX; } return rcStrict; } /** * @callback_method_impl{FNSSMDEVSAVEEXEC} */ static DECLCALLBACK(int) pcibridgeR3SaveExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM) { return pciR3CommonSaveExec(pDevIns->pHlpR3, PDMINS_2_DATA(pDevIns, PDEVPCIBUS), pSSM); } /** * @callback_method_impl{FNSSMDEVLOADEXEC} */ static DECLCALLBACK(int) pcibridgeR3LoadExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass) { PDEVPCIBUS pThis = PDMINS_2_DATA(pDevIns, PDEVPCIBUS); if (uVersion > VBOX_PCI_SAVED_STATE_VERSION) return VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION; return pciR3CommonLoadExec(pDevIns, pThis, pSSM, uVersion, uPass); } /** * @interface_method_impl{PDMDEVREG,pfnReset} */ static DECLCALLBACK(void) pcibridgeR3Reset(PPDMDEVINS pDevIns) { /* Reset config space to default values. */ PPDMPCIDEV pPciDev = pDevIns->apPciDevs[0]; pPciDev->abConfig[VBOX_PCI_PRIMARY_BUS] = 0; pPciDev->abConfig[VBOX_PCI_SECONDARY_BUS] = 0; pPciDev->abConfig[VBOX_PCI_SUBORDINATE_BUS] = 0; } /** * @interface_method_impl{PDMDEVREG,pfnDestruct} */ static DECLCALLBACK(int) pcibridgeR3Destruct(PPDMDEVINS pDevIns) { PDEVPCIBUS pBus = PDMINS_2_DATA(pDevIns, PDEVPCIBUS); if (pBus->papBridgesR3) { PDMDevHlpMMHeapFree(pDevIns, pBus->papBridgesR3); pBus->papBridgesR3 = NULL; } return VINF_SUCCESS; } /** * @interface_method_impl{PDMDEVREG,pfnConstruct} */ static DECLCALLBACK(int) pcibridgeR3Construct(PPDMDEVINS pDevIns, int iInstance, PCFGMNODE pCfg) { PDMDEV_CHECK_VERSIONS_RETURN(pDevIns); RT_NOREF(iInstance, pCfg); PDEVPCIBUS pBus = PDMINS_2_DATA(pDevIns, PDEVPCIBUS); PDEVPCIBUSCC pBusCC = PDMINS_2_DATA_CC(pDevIns, PDEVPCIBUSCC); /* * Validate and read configuration (none left). */ PDMDEV_VALIDATE_CONFIG_RETURN(pDevIns, "", ""); Log(("PCI: fRCEnabled=%RTbool fR0Enabled=%RTbool\n", pDevIns->fRCEnabled, pDevIns->fR0Enabled)); /* * Init data and register the PCI bus. */ pBus->fTypePiix3 = true; pBus->fTypeIch9 = false; pBus->fPureBridge = true; pBus->papBridgesR3 = (PPDMPCIDEV *)PDMDevHlpMMHeapAllocZ(pDevIns, sizeof(PPDMPCIDEV) * RT_ELEMENTS(pBus->apDevices)); AssertLogRelReturn(pBus->papBridgesR3, VERR_NO_MEMORY); PDMPCIBUSREGCC PciBusReg; PciBusReg.u32Version = PDM_PCIBUSREGCC_VERSION; PciBusReg.pfnRegisterR3 = devpcibridgeR3CommonRegisterDevice; PciBusReg.pfnRegisterMsiR3 = NULL; PciBusReg.pfnIORegionRegisterR3 = devpciR3CommonIORegionRegister; PciBusReg.pfnInterceptConfigAccesses = devpciR3CommonInterceptConfigAccesses; PciBusReg.pfnConfigWrite = devpciR3CommonConfigWrite; PciBusReg.pfnConfigRead = devpciR3CommonConfigRead; PciBusReg.pfnSetIrqR3 = pcibridgeSetIrq; PciBusReg.u32EndVersion = PDM_PCIBUSREGCC_VERSION; int rc = PDMDevHlpPCIBusRegister(pDevIns, &PciBusReg, &pBusCC->pPciHlpR3, &pBus->iBus); if (RT_FAILURE(rc)) return PDMDEV_SET_ERROR(pDevIns, rc, N_("Failed to register ourselves as a PCI Bus")); Assert(pBus->iBus == (uint32_t)iInstance + 1); /* Can be removed when adding support for multiple bridge implementations. */ if (pBusCC->pPciHlpR3->u32Version != PDM_PCIHLPR3_VERSION) return PDMDevHlpVMSetError(pDevIns, VERR_VERSION_MISMATCH, RT_SRC_POS, N_("PCI helper version mismatch; got %#x expected %#x"), pBusCC->pPciHlpR3->u32Version, PDM_PCIHLPR3_VERSION); /* * Fill in PCI configs and add them to the bus. */ PPDMPCIDEV pPciDev = pDevIns->apPciDevs[0]; PCIDevSetVendorId( pPciDev, 0x8086); /* Intel */ PCIDevSetDeviceId( pPciDev, 0x2448); /* 82801 Mobile PCI bridge. */ PCIDevSetRevisionId(pPciDev, 0xf2); PCIDevSetClassSub( pPciDev, 0x04); /* pci2pci */ PCIDevSetClassBase( pPciDev, 0x06); /* PCI_bridge */ PCIDevSetClassProg( pPciDev, 0x01); /* Supports subtractive decoding. */ PCIDevSetHeaderType(pPciDev, 0x01); /* Single function device which adheres to the PCI-to-PCI bridge spec. */ PCIDevSetCommand( pPciDev, 0x0000); PCIDevSetStatus( pPciDev, 0x0020); /* 66MHz Capable. */ PCIDevSetInterruptLine(pPciDev, 0x00); /* This device does not assert interrupts. */ /* * This device does not generate interrupts. Interrupt delivery from * devices attached to the bus is unaffected. */ PCIDevSetInterruptPin(pPciDev, 0x00); /* * Register this PCI bridge. The called function will take care on which bus we will get registered. */ rc = PDMDevHlpPCIRegisterEx(pDevIns, pPciDev, PDMPCIDEVREG_F_PCI_BRIDGE, PDMPCIDEVREG_DEV_NO_FIRST_UNUSED, PDMPCIDEVREG_FUN_NO_FIRST_UNUSED, "pcibridge"); if (RT_FAILURE(rc)) return rc; pPciDev->Int.s.pfnBridgeConfigRead = pcibridgeR3ConfigRead; pPciDev->Int.s.pfnBridgeConfigWrite = pcibridgeR3ConfigWrite; pBus->iDevSearch = 0; /* * Register SSM handlers. We use the same saved state version as for the host bridge * to make changes easier. */ rc = PDMDevHlpSSMRegisterEx(pDevIns, VBOX_PCI_SAVED_STATE_VERSION, sizeof(*pBus) + 16*128, "pgm", NULL, NULL, NULL, NULL, pcibridgeR3SaveExec, NULL, NULL, pcibridgeR3LoadExec, NULL); if (RT_FAILURE(rc)) return rc; return VINF_SUCCESS; } #else /* !IN_RING3 */ /** * @interface_method_impl{PDMDEVREGR0,pfnConstruct} */ static DECLCALLBACK(int) pcibridgeRZConstruct(PPDMDEVINS pDevIns) { PDMDEV_CHECK_VERSIONS_RETURN(pDevIns); PDEVPCIBUS pBus = PDMINS_2_DATA(pDevIns, PDEVPCIBUS); PDEVPCIBUSCC pBusCC = PDMINS_2_DATA_CC(pDevIns, PDEVPCIBUSCC); PDMPCIBUSREGCC PciBusReg; PciBusReg.u32Version = PDM_PCIBUSREGCC_VERSION; PciBusReg.iBus = pBus->iBus; PciBusReg.pfnSetIrq = pcibridgeSetIrq; PciBusReg.u32EndVersion = PDM_PCIBUSREGCC_VERSION; int rc = PDMDevHlpPCIBusSetUpContext(pDevIns, &PciBusReg, &pBusCC->CTX_SUFF(pPciHlp)); AssertRC(rc); return rc; } #endif /* !IN_RING3 */ /** * The device registration structure * for the PCI-to-PCI bridge. */ const PDMDEVREG g_DevicePCIBridge = { /* .u32Version = */ PDM_DEVREG_VERSION, /* .uReserved0 = */ 0, /* .szName = */ "pcibridge", /* .fFlags = */ PDM_DEVREG_FLAGS_DEFAULT_BITS | PDM_DEVREG_FLAGS_RZ | PDM_DEVREG_FLAGS_NEW_STYLE, /* .fClass = */ PDM_DEVREG_CLASS_BUS_PCI, /* .cMaxInstances = */ ~0U, /* .uSharedVersion = */ 42, /* .cbInstanceShared = */ sizeof(DEVPCIBUS), /* .cbInstanceCC = */ sizeof(CTX_SUFF(DEVPCIBUS)), /* .cbInstanceRC = */ 0, /* .cMaxPciDevices = */ 1, /* .cMaxMsixVectors = */ 0, /* .pszDescription = */ "82801 Mobile PCI to PCI bridge", #if defined(IN_RING3) /* .pszRCMod = */ "VBoxDDRC.rc", /* .pszR0Mod = */ "VBoxDDR0.r0", /* .pfnConstruct = */ pcibridgeR3Construct, /* .pfnDestruct = */ pcibridgeR3Destruct, /* .pfnRelocate = */ NULL, /* .pfnMemSetup = */ NULL, /* .pfnPowerOn = */ NULL, /* .pfnReset = */ pcibridgeR3Reset, /* .pfnSuspend = */ NULL, /* .pfnResume = */ NULL, /* .pfnAttach = */ NULL, /* .pfnDetach = */ NULL, /* .pfnQueryInterface = */ NULL, /* .pfnInitComplete = */ NULL, /* .pfnPowerOff = */ NULL, /* .pfnSoftReset = */ NULL, /* .pfnReserved0 = */ NULL, /* .pfnReserved1 = */ NULL, /* .pfnReserved2 = */ NULL, /* .pfnReserved3 = */ NULL, /* .pfnReserved4 = */ NULL, /* .pfnReserved5 = */ NULL, /* .pfnReserved6 = */ NULL, /* .pfnReserved7 = */ NULL, #elif defined(IN_RING0) /* .pfnEarlyConstruct = */ NULL, /* .pfnConstruct = */ pcibridgeRZConstruct, /* .pfnDestruct = */ NULL, /* .pfnFinalDestruct = */ NULL, /* .pfnRequest = */ NULL, /* .pfnReserved0 = */ NULL, /* .pfnReserved1 = */ NULL, /* .pfnReserved2 = */ NULL, /* .pfnReserved3 = */ NULL, /* .pfnReserved4 = */ NULL, /* .pfnReserved5 = */ NULL, /* .pfnReserved6 = */ NULL, /* .pfnReserved7 = */ NULL, #elif defined(IN_RC) /* .pfnConstruct = */ pcibridgeRZConstruct, /* .pfnReserved0 = */ NULL, /* .pfnReserved1 = */ NULL, /* .pfnReserved2 = */ NULL, /* .pfnReserved3 = */ NULL, /* .pfnReserved4 = */ NULL, /* .pfnReserved5 = */ NULL, /* .pfnReserved6 = */ NULL, /* .pfnReserved7 = */ NULL, #else # error "Not in IN_RING3, IN_RING0 or IN_RC!" #endif /* .u32VersionEnd = */ PDM_DEVREG_VERSION };