/* $Id: DevPCI.cpp 16745 2009-02-13 15:53:00Z vboxsync $ */ /** @file * DevPCI - PCI BUS Device. */ /* * Copyright (C) 2006-2007 Sun Microsystems, Inc. * * This file is part of VirtualBox Open Source Edition (OSE), as * available from http://www.virtualbox.org. This file is free software; * you can redistribute it and/or modify it under the terms of the GNU * General Public License (GPL) as published by the Free Software * Foundation, in version 2 as it comes in the "COPYING" file of the * VirtualBox OSE distribution. VirtualBox OSE is distributed in the * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind. * * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa * Clara, CA 95054 USA or visit http://www.sun.com if you need * additional information or have any questions. * -------------------------------------------------------------------- * * 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 /* Hack to get PCIDEVICEINT declare at the right point - include "PCIInternal.h". */ #define PCI_INCLUDE_PRIVATE #include #include #include #include #include "../Builtins.h" /******************************************************************************* * Structures and Typedefs * *******************************************************************************/ /** * PIIX3 ISA Bridge state. */ typedef struct PIIX3State { /** The PCI device of the bridge. */ PCIDEVICE dev; } PIIX3State, PIIX3, *PPIIX3; /** * PCI Bus instance. */ typedef struct PCIBus { /** Bus number. */ int32_t iBus; /** Start device number. */ int32_t iDevSearch; /** Number of bridges attached to the bus. */ uint32_t cBridges; uint32_t Alignment0; /** Array of PCI devices. */ R3PTRTYPE(PPCIDEVICE) devices[256]; /** Array of bridges attached to the bus. */ R3PTRTYPE(PPCIDEVICE *) papBridgesR3; /** R3 pointer to the device instance. */ PPDMDEVINSR3 pDevInsR3; /** Pointer to the PCI R3 helpers. */ PCPDMPCIHLPR3 pPciHlpR3; /** R0 pointer to the device instance. */ PPDMDEVINSR0 pDevInsR0; /** Pointer to the PCI R0 helpers. */ PCPDMPCIHLPR0 pPciHlpR0; /** RC pointer to the device instance. */ PPDMDEVINSRC pDevInsRC; /** Pointer to the PCI RC helpers. */ PCPDMPCIHLPRC pPciHlpRC; /** The PCI device for the PCI bridge. */ PCIDEVICE PciDev; } PCIBUS; /** Pointer to a PCIBUS instance. */ typedef PCIBUS *PPCIBUS; typedef PCIBUS PCIBus; /** @def PCI_IRQ_PINS * Number of pins for interrupts (PIRQ#0...PIRQ#3) */ #define PCI_IRQ_PINS 4 /** @def PCI_APIC_IRQ_PINS * Number of pins for interrupts if the APIC is used. */ #define PCI_APIC_IRQ_PINS 8 /** * PCI Globals - This is the host-to-pci bridge and the root bus. */ typedef struct PCIGLOBALS { /** Irq levels for the four PCI Irqs. * These count how many devices asserted * the IRQ line. If greater 0 an IRQ is sent to the guest. * If it drops to 0 the IRQ is deasserted. */ volatile uint32_t pci_irq_levels[PCI_IRQ_PINS]; #if 1 /* Will be moved into the BIOS soon. */ /** The next I/O port address which the PCI BIOS will use. */ uint32_t pci_bios_io_addr; /** The next MMIO address which the PCI BIOS will use. */ uint32_t pci_bios_mem_addr; /** Actual bus number. */ uint8_t uBus; #endif /** I/O APIC usage flag */ bool fUseIoApic; /** I/O APIC irq levels */ volatile uint32_t pci_apic_irq_levels[PCI_APIC_IRQ_PINS]; /** ACPI IRQ level */ uint32_t acpi_irq_level; /** ACPI PIC IRQ */ int acpi_irq; /** Config register. */ uint32_t uConfigReg; /** R3 pointer to the device instance. */ PPDMDEVINSR3 pDevInsR3; /** R0 pointer to the device instance. */ PPDMDEVINSR0 pDevInsR0; /** RC pointer to the device instance. */ PPDMDEVINSRC pDevInsRC; #if HC_ARCH_BITS == 64 uint32_t Alignment0; #endif /** ISA bridge state. */ PIIX3 PIIX3State; /** PCI bus which is attached to the host-to-PCI bridge. */ PCIBUS PciBus; } PCIGLOBALS; /** Pointer to per VM data. */ typedef PCIGLOBALS *PPCIGLOBALS; /******************************************************************************* * Defined Constants And Macros * *******************************************************************************/ /** Converts a bus instance pointer to a device instance pointer. */ #define PCIBUS_2_DEVINS(pPciBus) ((pPciBus)->CTX_SUFF(pDevIns)) /** Converts a device instance pointer to a PCIGLOBALS pointer. */ #define DEVINS_2_PCIGLOBALS(pDevIns) ((PPCIGLOBALS)(PDMINS_2_DATA(pDevIns, PPCIGLOBALS))) /** Converts a device instance pointer to a PCIBUS pointer. */ #define DEVINS_2_PCIBUS(pDevIns) ((PPCIBUS)(&PDMINS_2_DATA(pDevIns, PPCIGLOBALS)->PciBus)) /** Converts a pointer to a PCI bus instance to a PCIGLOBALS pointer. * @note This works only if the bus number is 0!!! */ #define PCIBUS_2_PCIGLOBALS(pPciBus) ( (PPCIGLOBALS)((uintptr_t)(pPciBus) - RT_OFFSETOF(PCIGLOBALS, PciBus)) ) /** @def PCI_LOCK * Acquires the PDM lock. This is a NOP if locking is disabled. */ /** @def PCI_UNLOCK * Releases the PDM lock. This is a NOP if locking is disabled. */ #define PCI_LOCK(pDevIns, rc) \ do { \ int rc2 = DEVINS_2_PCIBUS(pDevIns)->CTX_SUFF(pPciHlp)->pfnLock((pDevIns), rc); \ if (rc2 != VINF_SUCCESS) \ return rc2; \ } while (0) #define PCI_UNLOCK(pDevIns) \ DEVINS_2_PCIBUS(pDevIns)->CTX_SUFF(pPciHlp)->pfnUnlock(pDevIns) /** @def VBOX_PCI_SAVED_STATE_VERSION * Saved state version of the PCI bus device. */ #define VBOX_PCI_SAVED_STATE_VERSION 3 #ifndef VBOX_DEVICE_STRUCT_TESTCASE /******************************************************************************* * Internal Functions * *******************************************************************************/ __BEGIN_DECLS PDMBOTHCBDECL(void) pciSetIrq(PPDMDEVINS pDevIns, PPCIDEVICE pPciDev, int iIrq, int iLevel); PDMBOTHCBDECL(void) pcibridgeSetIrq(PPDMDEVINS pDevIns, PPCIDEVICE pPciDev, int iIrq, int iLevel); PDMBOTHCBDECL(int) pciIOPortAddressWrite(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT Port, uint32_t u32, unsigned cb); PDMBOTHCBDECL(int) pciIOPortAddressRead(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT Port, uint32_t *pu32, unsigned cb); PDMBOTHCBDECL(int) pciIOPortDataWrite(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT Port, uint32_t u32, unsigned cb); PDMBOTHCBDECL(int) pciIOPortDataRead(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT Port, uint32_t *pu32, unsigned cb); #ifdef IN_RING3 DECLINLINE(PPCIDEVICE) pciFindBridge(PPCIBUS pBus, uint8_t iBus); #endif __END_DECLS #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 */ #ifdef IN_RING3 static void pci_update_mappings(PCIDevice *d) { PPCIBUS pBus = d->Int.s.CTX_SUFF(pBus); PCIIORegion *r; int cmd, i; uint32_t last_addr, new_addr, config_ofs; cmd = RT_LE2H_U16(*(uint16_t *)(d->config + PCI_COMMAND)); for(i = 0; i < PCI_NUM_REGIONS; i++) { r = &d->Int.s.aIORegions[i]; if (i == PCI_ROM_SLOT) { config_ofs = 0x30; } else { config_ofs = 0x10 + i * 4; } if (r->size != 0) { if (r->type & PCI_ADDRESS_SPACE_IO) { if (cmd & PCI_COMMAND_IO) { new_addr = RT_LE2H_U32(*(uint32_t *)(d->config + config_ofs)); new_addr = new_addr & ~(r->size - 1); last_addr = new_addr + r->size - 1; /* NOTE: we have only 64K ioports on PC */ if (last_addr <= new_addr || new_addr == 0 || last_addr >= 0x10000) { new_addr = ~0U; } } else { new_addr = ~0U; } } else { if (cmd & PCI_COMMAND_MEMORY) { new_addr = RT_LE2H_U32(*(uint32_t *)(d->config + config_ofs)); /* the ROM slot has a specific enable bit */ if (i == PCI_ROM_SLOT && !(new_addr & 1)) goto no_mem_map; new_addr = new_addr & ~(r->size - 1); last_addr = new_addr + r->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 == ~0U) { new_addr = ~0U; } } else { no_mem_map: new_addr = ~0U; } } /* now do the real mapping */ if (new_addr != r->addr) { if (r->addr != ~0U) { if (r->type & PCI_ADDRESS_SPACE_IO) { int devclass; /* NOTE: specific hack for IDE in PC case: only one byte must be mapped. */ devclass = d->config[0x0a] | (d->config[0x0b] << 8); if (devclass == 0x0101 && r->size == 4) { int rc = d->pDevIns->pDevHlpR3->pfnIOPortDeregister(d->pDevIns, r->addr + 2, 1); AssertRC(rc); } else { int rc = d->pDevIns->pDevHlpR3->pfnIOPortDeregister(d->pDevIns, r->addr, r->size); AssertRC(rc); } } else { RTGCPHYS GCPhysBase = r->addr; int rc; if (pBus->pPciHlpR3->pfnIsMMIO2Base(pBus->pDevInsR3, d->pDevIns, GCPhysBase)) { /* unmap it. */ rc = r->map_func(d, i, NIL_RTGCPHYS, r->size, (PCIADDRESSSPACE)(r->type)); AssertRC(rc); rc = PDMDevHlpMMIO2Unmap(d->pDevIns, i, GCPhysBase); } else rc = d->pDevIns->pDevHlpR3->pfnMMIODeregister(d->pDevIns, GCPhysBase, r->size); AssertMsgRC(rc, ("rc=%Rrc d=%s i=%d GCPhysBase=%RGp size=%#x\n", rc, d->name, i, GCPhysBase, r->size)); } } r->addr = new_addr; if (r->addr != ~0U) { int rc = r->map_func(d, i, r->addr + (r->type & PCI_ADDRESS_SPACE_IO ? 0 : 0), r->size, (PCIADDRESSSPACE)(r->type)); AssertRC(rc); } } } } } static DECLCALLBACK(uint32_t) pci_default_read_config(PCIDevice *d, uint32_t address, unsigned len) { uint32_t val; switch(len) { case 1: val = d->config[address]; break; case 2: val = RT_LE2H_U16(*(uint16_t *)(d->config + address)); break; default: case 4: val = RT_LE2H_U32(*(uint32_t *)(d->config + address)); break; } return val; } static DECLCALLBACK(void) pci_default_write_config(PCIDevice *d, uint32_t address, uint32_t val, unsigned len) { int can_write; unsigned i; uint32_t end, addr; if (len == 4 && ((address >= 0x10 && address < 0x10 + 4 * 6) || (address >= 0x30 && address < 0x34))) { PCIIORegion *r; int reg; if ( address >= 0x30 ) { reg = PCI_ROM_SLOT; }else{ reg = (address - 0x10) >> 2; } r = &d->Int.s.aIORegions[reg]; if (r->size == 0) goto default_config; /* compute the stored value */ if (reg == PCI_ROM_SLOT) { /* keep ROM enable bit */ val &= (~(r->size - 1)) | 1; } else { val &= ~(r->size - 1); val |= r->type; } *(uint32_t *)(d->config + address) = RT_H2LE_U32(val); pci_update_mappings(d); return; } default_config: /* not efficient, but simple */ addr = address; for(i = 0; i < len; i++) { /* default read/write accesses */ switch(d->config[0x0e]) { case 0x00: /* normal device */ case 0x80: /* multi-function device */ switch(addr) { case 0x00: case 0x01: case 0x02: case 0x03: case 0x08: case 0x09: case 0x0a: case 0x0b: case 0x0e: case 0x10: case 0x11: case 0x12: case 0x13: case 0x14: case 0x15: case 0x16: case 0x17: /* base */ case 0x18: case 0x19: case 0x1a: case 0x1b: case 0x1c: case 0x1d: case 0x1e: case 0x1f: case 0x20: case 0x21: case 0x22: case 0x23: case 0x24: case 0x25: case 0x26: case 0x27: case 0x2c: case 0x2d: /* subsystem ID */ case 0x2e: case 0x2f: /* vendor ID */ case 0x30: case 0x31: case 0x32: case 0x33: /* rom */ case 0x3d: can_write = 0; break; default: can_write = 1; break; } break; default: case 0x01: /* bridge */ switch(addr) { case 0x00: case 0x01: case 0x02: case 0x03: case 0x08: case 0x09: case 0x0a: case 0x0b: case 0x0e: case 0x38: case 0x39: case 0x3a: case 0x3b: /* rom */ case 0x3d: can_write = 0; break; default: can_write = 1; break; } break; } #ifdef VBOX if (addr == 0x06) { /* don't change read-only bits => actually all lower bits are read-only */ val &= UINT32_C(~0xff); /* status register, low part: clear bits by writing a '1' to the corresponding bit */ d->config[addr] &= ~val; } else if (addr == 0x07) { /* don't change read-only bits */ val &= UINT32_C(~0x06); /* status register, high part: clear bits by writing a '1' to the corresponding bit */ d->config[addr] &= ~val; } else #endif if (can_write) { d->config[addr] = val; } addr++; val >>= 8; } end = address + len; if (end > PCI_COMMAND && address < (PCI_COMMAND + 2)) { /* if the command register is modified, we must modify the mappings */ pci_update_mappings(d); } } #endif /* IN_RING3 */ static int pci_data_write(PPCIGLOBALS pGlobals, uint32_t addr, uint32_t val, int len) { uint8_t iBus, iDevice; uint32_t config_addr; Log(("pci_data_write: addr=%08x val=%08x len=%d\n", pGlobals->uConfigReg, val, len)); if (!(pGlobals->uConfigReg & (1 << 31))) { return VINF_SUCCESS; } if ((pGlobals->uConfigReg & 0x3) != 0) { return VINF_SUCCESS; } iBus = (pGlobals->uConfigReg >> 16) & 0xff; iDevice = (pGlobals->uConfigReg >> 8) & 0xff; config_addr = (pGlobals->uConfigReg & 0xfc) | (addr & 3); if (iBus != 0) { if (pGlobals->PciBus.cBridges) { #ifdef IN_RING3 /** @todo do lookup in R0/RC too! */ PPCIDEVICE pBridgeDevice = pciFindBridge(&pGlobals->PciBus, iBus); if (pBridgeDevice) { AssertPtr(pBridgeDevice->Int.s.pfnBridgeConfigWrite); pBridgeDevice->Int.s.pfnBridgeConfigWrite(pBridgeDevice->pDevIns, iBus, iDevice, config_addr, val, len); } #else return VINF_IOM_HC_IOPORT_WRITE; #endif } } else { R3PTRTYPE(PCIDevice *) pci_dev = pGlobals->PciBus.devices[iDevice]; if (pci_dev) { #ifdef IN_RING3 Log(("pci_config_write: %s: addr=%02x val=%08x len=%d\n", pci_dev->name, config_addr, val, len)); pci_dev->Int.s.pfnConfigWrite(pci_dev, config_addr, val, len); #else return VINF_IOM_HC_IOPORT_WRITE; #endif } } return VINF_SUCCESS; } static int pci_data_read(PPCIGLOBALS pGlobals, uint32_t addr, int len, uint32_t *pu32) { uint8_t iBus, iDevice; uint32_t config_addr; *pu32 = 0xffffffff; if (!(pGlobals->uConfigReg & (1 << 31))) return VINF_SUCCESS; if ((pGlobals->uConfigReg & 0x3) != 0) return VINF_SUCCESS; iBus = (pGlobals->uConfigReg >> 16) & 0xff; iDevice = (pGlobals->uConfigReg >> 8) & 0xff; config_addr = (pGlobals->uConfigReg & 0xfc) | (addr & 3); if (iBus != 0) { if (pGlobals->PciBus.cBridges) { #ifdef IN_RING3 /** @todo do lookup in R0/RC too! */ PPCIDEVICE pBridgeDevice = pciFindBridge(&pGlobals->PciBus, iBus); if (pBridgeDevice) { AssertPtr(pBridgeDevice->Int.s.pfnBridgeConfigRead); *pu32 = pBridgeDevice->Int.s.pfnBridgeConfigRead(pBridgeDevice->pDevIns, iBus, iDevice, config_addr, len); } #else return VINF_IOM_HC_IOPORT_READ; #endif } } else { R3PTRTYPE(PCIDevice *) pci_dev = pGlobals->PciBus.devices[iDevice]; if (pci_dev) { #ifdef IN_RING3 *pu32 = pci_dev->Int.s.pfnConfigRead(pci_dev, config_addr, len); Log(("pci_config_read: %s: addr=%02x val=%08x len=%d\n", pci_dev->name, config_addr, *pu32, len)); #else return VINF_IOM_HC_IOPORT_READ; #endif } } return VINF_SUCCESS; } /* 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(PPCIGLOBALS pGlobals, int irq_num) { return (pGlobals->pci_apic_irq_levels[irq_num] != 0); } static void apic_set_irq(PPCIBUS pBus, uint8_t uDevFn, PCIDevice *pPciDev, int irq_num1, int iLevel, int acpi_irq) { /* This is only allowed to be called with a pointer to the host bus. */ AssertMsg(pBus->iBus == 0, ("iBus=%u\n", pBus->iBus)); if (acpi_irq == -1) { int apic_irq, apic_level; PPCIGLOBALS pGlobals = PCIBUS_2_PCIGLOBALS(pBus); int irq_num = pci_slot_get_apic_pirq(uDevFn, irq_num1); if ((iLevel & PDM_IRQ_LEVEL_HIGH) == PDM_IRQ_LEVEL_HIGH) ASMAtomicIncU32(&pGlobals->pci_apic_irq_levels[irq_num]); else if ((iLevel & PDM_IRQ_LEVEL_HIGH) == PDM_IRQ_LEVEL_LOW) ASMAtomicDecU32(&pGlobals->pci_apic_irq_levels[irq_num]); apic_irq = irq_num + 0x10; apic_level = get_pci_irq_apic_level(pGlobals, irq_num); Log3(("apic_set_irq: %s: irq_num1=%d level=%d apic_irq=%d apic_level=%d irq_num1=%d\n", R3STRING(pPciDev->name), irq_num1, iLevel, apic_irq, apic_level, irq_num)); pBus->CTX_SUFF(pPciHlp)->pfnIoApicSetIrq(pBus->CTX_SUFF(pDevIns), apic_irq, apic_level); if ((iLevel & PDM_IRQ_LEVEL_FLIP_FLOP) == PDM_IRQ_LEVEL_FLIP_FLOP) { ASMAtomicDecU32(&pGlobals->pci_apic_irq_levels[irq_num]); pPciDev->Int.s.uIrqPinState = PDM_IRQ_LEVEL_LOW; apic_level = get_pci_irq_apic_level(pGlobals, irq_num); Log3(("apic_set_irq: %s: irq_num1=%d level=%d apic_irq=%d apic_level=%d irq_num1=%d (flop)\n", R3STRING(pPciDev->name), irq_num1, iLevel, apic_irq, apic_level, irq_num)); pBus->CTX_SUFF(pPciHlp)->pfnIoApicSetIrq(pBus->CTX_SUFF(pDevIns), apic_irq, apic_level); } } else { Log3(("apic_set_irq: %s: irq_num1=%d level=%d acpi_irq=%d\n", R3STRING(pPciDev->name), irq_num1, iLevel, acpi_irq)); pBus->CTX_SUFF(pPciHlp)->pfnIoApicSetIrq(pBus->CTX_SUFF(pDevIns), acpi_irq, iLevel); } } DECLINLINE(int) get_pci_irq_level(PPCIGLOBALS pGlobals, int irq_num) { return (pGlobals->pci_irq_levels[irq_num] != 0); } /** * Set the IRQ for a PCI device on the host bus - shared by host bus and bridge. * * @param pDevIns Device instance of the host 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. * @remark uDevFn and pPciDev->devfn 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(PPCIGLOBALS pGlobals, uint8_t uDevFn, PPCIDEVICE pPciDev, int iIrq, int iLevel) { PPCIBUS pBus = &pGlobals->PciBus; uint8_t *pbCfg = pGlobals->PIIX3State.dev.config; const bool fIsAcpiDevice = pPciDev->config[2] == 0x13 && pPciDev->config[3] == 0x71; 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); /* 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(pBus, uDevFn, pPciDev, -1, iLevel, pPciDev->config[PCI_INTERRUPT_LINE]); else apic_set_irq(pBus, uDevFn, pPciDev, iIrq, iLevel, -1); return; } if (fIsAcpiDevice) { /* As per above treat ACPI in a special way */ pic_irq = pPciDev->config[PCI_INTERRUPT_LINE]; pGlobals->acpi_irq = pic_irq; pGlobals->acpi_irq_level = 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->pci_irq_levels[irq_num]); else if (pPciDev->Int.s.uIrqPinState == PDM_IRQ_LEVEL_LOW) ASMAtomicDecU32(&pGlobals->pci_irq_levels[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->pci_irq_levels[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); if (pic_irq == pbCfg[0x61]) pic_level |= get_pci_irq_level(pGlobals, 1); if (pic_irq == pbCfg[0x62]) pic_level |= get_pci_irq_level(pGlobals, 2); if (pic_irq == pbCfg[0x63]) pic_level |= get_pci_irq_level(pGlobals, 3); if (pic_irq == pGlobals->acpi_irq) pic_level |= pGlobals->acpi_irq_level; Log3(("pciSetIrq: %s: iLevel=%d iIrq=%d pic_irq=%d pic_level=%d\n", R3STRING(pPciDev->name), iLevel, iIrq, pic_irq, pic_level)); pBus->CTX_SUFF(pPciHlp)->pfnIsaSetIrq(pBus->CTX_SUFF(pDevIns), pic_irq, pic_level); /** @todo optimize pci irq flip-flop some rainy day. */ if ((iLevel & PDM_IRQ_LEVEL_FLIP_FLOP) == PDM_IRQ_LEVEL_FLIP_FLOP) pciSetIrqInternal(pGlobals, uDevFn, pPciDev, iIrq, PDM_IRQ_LEVEL_LOW); } } /** * Set the IRQ for a PCI device on the host bus. * * @param pDevIns Device instance of the PCI Bus. * @param pPciDev The PCI device structure. * @param iIrq IRQ number to set. * @param iLevel IRQ level. */ PDMBOTHCBDECL(void) pciSetIrq(PPDMDEVINS pDevIns, PPCIDEVICE pPciDev, int iIrq, int iLevel) { pciSetIrqInternal(PDMINS_2_DATA(pDevIns, PPCIGLOBALS), pPciDev->devfn, pPciDev, iIrq, iLevel); } #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(PPCIDEVICE) pciFindBridge(PPCIBUS 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. */ PPCIDEVICE pBridgeTemp = pBus->papBridgesR3[iBridge]; AssertMsg(pBridgeTemp && pBridgeTemp->Int.s.fPciToPciBridge, ("Device is not a PCI bridge but on the list of PCI bridges\n")); if ( iBus >= pBridgeTemp->config[VBOX_PCI_SECONDARY_BUS] && iBus <= pBridgeTemp->config[VBOX_PCI_SUBORDINATE_BUS]) return pBridgeTemp; } /* Nothing found. */ return NULL; } static void piix3_reset(PIIX3State *d) { uint8_t *pci_conf = d->dev.config; 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[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; } static void pci_config_writel(PPCIGLOBALS pGlobals, uint8_t uBus, uint8_t uDevFn, uint32_t addr, uint32_t val) { pGlobals->uConfigReg = 0x80000000 | (uBus << 16) | (uDevFn << 8) | addr; pci_data_write(pGlobals, 0, val, 4); } static void pci_config_writew(PPCIGLOBALS pGlobals, uint8_t uBus, uint8_t uDevFn, uint32_t addr, uint32_t val) { pGlobals->uConfigReg = 0x80000000 | (uBus << 16) | (uDevFn << 8) | (addr & ~3); pci_data_write(pGlobals, addr & 3, val, 2); } static void pci_config_writeb(PPCIGLOBALS pGlobals, uint8_t uBus, uint8_t uDevFn, uint32_t addr, uint32_t val) { pGlobals->uConfigReg = 0x80000000 | (uBus << 16) | (uDevFn << 8) | (addr & ~3); pci_data_write(pGlobals, addr & 3, val, 1); } static uint32_t pci_config_readl(PPCIGLOBALS pGlobals, uint8_t uBus, uint8_t uDevFn, uint32_t addr) { pGlobals->uConfigReg = 0x80000000 | (uBus << 16) | (uDevFn << 8) | addr; uint32_t u32Val; int rc = pci_data_read(pGlobals, 0, 4, &u32Val); AssertRC(rc); return u32Val; } static uint32_t pci_config_readw(PPCIGLOBALS pGlobals, uint8_t uBus, uint8_t uDevFn, uint32_t addr) { pGlobals->uConfigReg = 0x80000000 | (uBus << 16) | (uDevFn << 8) | (addr & ~3); uint32_t u32Val; int rc = pci_data_read(pGlobals, addr & 3, 2, &u32Val); AssertRC(rc); return u32Val; } static uint32_t pci_config_readb(PPCIGLOBALS pGlobals, uint8_t uBus, uint8_t uDevFn, uint32_t addr) { pGlobals->uConfigReg = 0x80000000 | (uBus << 16) | (uDevFn << 8) | (addr & ~3); uint32_t u32Val; int rc = pci_data_read(pGlobals, addr & 3, 1, &u32Val); AssertRC(rc); return u32Val; } /* host irqs corresponding to PCI irqs A-D */ static const uint8_t pci_irqs[4] = { 11, 9, 11, 9 }; /* bird: added const */ static void pci_set_io_region_addr(PPCIGLOBALS pGlobals, uint8_t uBus, uint8_t uDevFn, int region_num, uint32_t addr) { uint16_t cmd; uint32_t ofs; if ( region_num == PCI_ROM_SLOT ) ofs = 0x30; else ofs = 0x10 + region_num * 4; /* Read memory type first. */ uint8_t uRessourceType = pci_config_readb(pGlobals, uBus, uDevFn, ofs); /* Read command register. */ cmd = pci_config_readw(pGlobals, uBus, uDevFn, PCI_COMMAND); if ( region_num == PCI_ROM_SLOT ) cmd |= 2; else if ((uRessourceType & 0x01) == 1) /* Test if region is I/O space. */ cmd |= 1; /* Enable I/O space access. */ else /* The region is MMIO. */ cmd |= 2; /* Enable MMIO access. */ /* Write address of the device. */ pci_config_writel(pGlobals, uBus, uDevFn, ofs, addr); /* enable memory mappings */ pci_config_writew(pGlobals, uBus, uDevFn, PCI_COMMAND, cmd); } static void pci_bios_init_device(PPCIGLOBALS pGlobals, uint8_t uBus, uint8_t uDevFn, uint8_t cBridgeDepth, uint8_t *paBridgePositions) { uint32_t *paddr; int i, pin, pic_irq; uint16_t devclass, vendor_id, device_id; devclass = pci_config_readw(pGlobals, uBus, uDevFn, PCI_CLASS_DEVICE); vendor_id = pci_config_readw(pGlobals, uBus, uDevFn, PCI_VENDOR_ID); device_id = pci_config_readw(pGlobals, uBus, uDevFn, 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 */ pci_config_writew(pGlobals, uBus, uDevFn, 0x40, 0x8000); /* enable IDE0 */ pci_config_writew(pGlobals, uBus, uDevFn, 0x42, 0x8000); /* enable IDE1 */ goto default_map; } else { /* IDE: we map it as in ISA mode */ pci_set_io_region_addr(pGlobals, uBus, uDevFn, 0, 0x1f0); pci_set_io_region_addr(pGlobals, uBus, uDevFn, 1, 0x3f4); pci_set_io_region_addr(pGlobals, uBus, uDevFn, 2, 0x170); pci_set_io_region_addr(pGlobals, uBus, uDevFn, 3, 0x374); } break; case 0x0300: if (vendor_id != 0x80ee) goto default_map; /* VGA: map frame buffer to default Bochs VBE address */ pci_set_io_region_addr(pGlobals, uBus, uDevFn, 0, 0xE0000000); break; case 0x0800: /* PIC */ vendor_id = pci_config_readw(pGlobals, uBus, uDevFn, PCI_VENDOR_ID); device_id = pci_config_readw(pGlobals, uBus, uDevFn, PCI_DEVICE_ID); if (vendor_id == 0x1014) { /* IBM */ if (device_id == 0x0046 || device_id == 0xFFFF) { /* MPIC & MPIC2 */ pci_set_io_region_addr(pGlobals, uBus, uDevFn, 0, 0x80800000 + 0x00040000); } } break; case 0xff00: if ( (vendor_id == 0x0106b) && (device_id == 0x0017 || device_id == 0x0022)) { /* macio bridge */ pci_set_io_region_addr(pGlobals, uBus, uDevFn, 0, 0x80800000); } break; case 0x0604: { /* Init PCI-to-PCI bridge. */ pci_config_writeb(pGlobals, uBus, uDevFn, VBOX_PCI_PRIMARY_BUS, uBus); AssertMsg(pGlobals->uBus < 255, ("Too many bridges on the bus\n")); pGlobals->uBus++; pci_config_writeb(pGlobals, uBus, uDevFn, VBOX_PCI_SECONDARY_BUS, pGlobals->uBus); pci_config_writeb(pGlobals, uBus, uDevFn, 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] = (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->pci_bios_io_addr % 4096) != 0) pGlobals->pci_bios_io_addr = RT_ALIGN_32(pGlobals->pci_bios_io_addr, 4*1024); Log(("%s: Aligned I/O start address. New address %#x\n", __FUNCTION__, pGlobals->pci_bios_io_addr)); pci_config_writeb(pGlobals, uBus, uDevFn, VBOX_PCI_IO_BASE, (pGlobals->pci_bios_io_addr >> 8) & 0xf0); /* The MMIO range for the bridge must be aligned to a 1MB boundary. */ if ((pGlobals->pci_bios_mem_addr % (1024 * 1024)) != 0) pGlobals->pci_bios_mem_addr = RT_ALIGN_32(pGlobals->pci_bios_mem_addr, 1024*1024); Log(("%s: Aligned MMIO start address. New address %#x\n", __FUNCTION__, pGlobals->pci_bios_mem_addr)); pci_config_writew(pGlobals, uBus, uDevFn, VBOX_PCI_MEMORY_BASE, (pGlobals->pci_bios_mem_addr >> 16) & UINT32_C(0xffff0)); /* Save values to compare later to. */ uint32_t u32IoAddressBase = pGlobals->pci_bios_io_addr; uint32_t u32MMIOAddressBase = pGlobals->pci_bios_mem_addr; /* Init devices behind the bridge and possibly other bridges as well. */ for (int i = 0; i <= 255; i++) pci_bios_init_device(pGlobals, uBus + 1, i, cBridgeDepth + 1, paBridgePositions); /* The number of bridges behind the this one is now available. */ pci_config_writeb(pGlobals, uBus, uDevFn, VBOX_PCI_SUBORDINATE_BUS, pGlobals->uBus); /* * 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->pci_bios_io_addr) && ((pGlobals->pci_bios_io_addr % 4096) != 0)) { /* The upper boundary must be one byte less than a 4KB boundary. */ pGlobals->pci_bios_io_addr = RT_ALIGN_32(pGlobals->pci_bios_io_addr, 4*1024); } pci_config_writeb(pGlobals, uBus, uDevFn, VBOX_PCI_IO_LIMIT, ((pGlobals->pci_bios_io_addr >> 8) & 0xf0) - 1); /* Same with the MMIO limit register but with 1MB boundary here. */ if ((u32MMIOAddressBase != pGlobals->pci_bios_mem_addr) && ((pGlobals->pci_bios_mem_addr % (1024 * 1024)) != 0)) { /* The upper boundary must be one byte less than a 1MB boundary. */ pGlobals->pci_bios_mem_addr = RT_ALIGN_32(pGlobals->pci_bios_mem_addr, 1024*1024); } pci_config_writew(pGlobals, uBus, uDevFn, VBOX_PCI_MEMORY_LIMIT, ((pGlobals->pci_bios_mem_addr >> 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. Thatswhy it is unconditionally disabled here atm by writing a higher value into * the base register than in the limit register. */ pci_config_writew(pGlobals, uBus, uDevFn, VBOX_PCI_PREF_MEMORY_BASE, 0xfff0); pci_config_writew(pGlobals, uBus, uDevFn, VBOX_PCI_PREF_MEMORY_LIMIT, 0x0); pci_config_writel(pGlobals, uBus, uDevFn, VBOX_PCI_PREF_BASE_UPPER32, 0x00); pci_config_writel(pGlobals, uBus, uDevFn, VBOX_PCI_PREF_LIMIT_UPPER32, 0x00); break; } default: default_map: { /* default memory mappings */ /* * 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(i = 0; i < (PCI_NUM_REGIONS-1); i++) { uint32_t u32Size; uint8_t u8RessourceType; uint32_t u32Address = 0x10 + i * 4; /* Calculate size. */ u8RessourceType = pci_config_readb(pGlobals, uBus, uDevFn, u32Address); pci_config_writel(pGlobals, uBus, uDevFn, u32Address, UINT32_C(0xffffffff)); u32Size = pci_config_readl(pGlobals, uBus, uDevFn, u32Address); /* Clear ressource information depending on ressource type. */ if ((u8RessourceType & 0x01) == 1) /* 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 (((u8RessourceType & 0x01) == 1) && (u32Size & UINT32_C(0xffff0000)) == 0) u32Size = (~(u32Size | UINT32_C(0xffff0000))) + 1; else u32Size = (~u32Size) + 1; Log(("%s: Size of region %u for device %d on bus %d is %u\n", __FUNCTION__, i, uDevFn, uBus, u32Size)); if (u32Size) { if ((u8RessourceType & 0x01) == 1) paddr = &pGlobals->pci_bios_io_addr; else paddr = &pGlobals->pci_bios_mem_addr; *paddr = (*paddr + u32Size - 1) & ~(u32Size - 1); Log(("%s: Start address of %s region %u is %#x\n", __FUNCTION__, ((u8RessourceType & 0x01) == 1 ? "I/O" : "MMIO"), i, *paddr)); pci_set_io_region_addr(pGlobals, uBus, uDevFn, i, *paddr); *paddr += u32Size; Log(("%s: New address is %#x\n", __FUNCTION__, *paddr)); } } break; } } /* map the interrupt */ pin = pci_config_readb(pGlobals, uBus, uDevFn, PCI_INTERRUPT_PIN); if (pin != 0) { uint8_t uBridgeDevFn = 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(uDevFn, pin); pic_irq = pci_irqs[pin]; pci_config_writeb(pGlobals, uBus, uDevFn, PCI_INTERRUPT_LINE, pic_irq); } } } #endif /* IN_RING3 */ /* -=-=-=-=-=- wrappers -=-=-=-=-=- */ /** * Port I/O Handler for PCI address OUT operations. * * @returns VBox status code. * * @param pDevIns The device instance. * @param pvUser User argument - ignored. * @param uPort Port number used for the IN operation. * @param u32 The value to output. * @param cb The value size in bytes. */ PDMBOTHCBDECL(int) pciIOPortAddressWrite(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT Port, uint32_t u32, unsigned cb) { Log(("pciIOPortAddressWrite: Port=%#x u32=%#x cb=%d\n", Port, u32, cb)); NOREF(pvUser); if (cb == 4) { PPCIGLOBALS pThis = PDMINS_2_DATA(pDevIns, PPCIGLOBALS); PCI_LOCK(pDevIns, VINF_IOM_HC_IOPORT_WRITE); pThis->uConfigReg = u32; 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; } /** * Port I/O Handler for PCI address IN operations. * * @returns VBox status code. * * @param pDevIns The device instance. * @param pvUser User argument - ignored. * @param uPort Port number used for the IN operation. * @param pu32 Where to store the result. * @param cb Number of bytes read. */ PDMBOTHCBDECL(int) pciIOPortAddressRead(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT Port, uint32_t *pu32, unsigned cb) { NOREF(pvUser); if (cb == 4) { PPCIGLOBALS pThis = PDMINS_2_DATA(pDevIns, PPCIGLOBALS); PCI_LOCK(pDevIns, VINF_IOM_HC_IOPORT_READ); *pu32 = pThis->uConfigReg; PCI_UNLOCK(pDevIns); Log(("pciIOPortAddressRead: Port=%#x cb=%d -> %#x\n", Port, 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. */ Log(("pciIOPortAddressRead: Port=%#x cb=%d VERR_IOM_IOPORT_UNUSED\n", Port, cb)); return VERR_IOM_IOPORT_UNUSED; } /** * Port I/O Handler for PCI data OUT operations. * * @returns VBox status code. * * @param pDevIns The device instance. * @param pvUser User argument - ignored. * @param uPort Port number used for the IN operation. * @param u32 The value to output. * @param cb The value size in bytes. */ PDMBOTHCBDECL(int) pciIOPortDataWrite(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT Port, uint32_t u32, unsigned cb) { Log(("pciIOPortDataWrite: Port=%#x u32=%#x cb=%d\n", Port, u32, cb)); NOREF(pvUser); int rc = VINF_SUCCESS; if (!(Port % cb)) { PCI_LOCK(pDevIns, VINF_IOM_HC_IOPORT_WRITE); rc = pci_data_write(PDMINS_2_DATA(pDevIns, PPCIGLOBALS), Port, u32, cb); PCI_UNLOCK(pDevIns); } else AssertMsgFailed(("Write to port %#x u32=%#x cb=%d\n", Port, u32, cb)); return rc; } /** * Port I/O Handler for PCI data IN operations. * * @returns VBox status code. * * @param pDevIns The device instance. * @param pvUser User argument - ignored. * @param uPort Port number used for the IN operation. * @param pu32 Where to store the result. * @param cb Number of bytes read. */ PDMBOTHCBDECL(int) pciIOPortDataRead(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT Port, uint32_t *pu32, unsigned cb) { NOREF(pvUser); if (!(Port % cb)) { PCI_LOCK(pDevIns, VINF_IOM_HC_IOPORT_READ); int rc = pci_data_read(PDMINS_2_DATA(pDevIns, PPCIGLOBALS), Port, cb, pu32); PCI_UNLOCK(pDevIns); Log(("pciIOPortDataRead: Port=%#x cb=%#x -> %#x (%Rrc)\n", Port, cb, *pu32, rc)); return rc; } AssertMsgFailed(("Read from port %#x cb=%d\n", Port, cb)); return VERR_IOM_IOPORT_UNUSED; } #ifdef IN_RING3 /** * Saves a state of the PCI device. * * @returns VBox status code. * @param pDevIns Device instance of the PCI Bus. * @param pPciDev Pointer to PCI device. * @param pSSMHandle The handle to save the state to. */ static DECLCALLBACK(int) pciGenericSaveExec(PPDMDEVINS pDevIns, PPCIDEVICE pPciDev, PSSMHANDLE pSSMHandle) { return SSMR3PutMem(pSSMHandle, &pPciDev->config[0], sizeof(pPciDev->config)); } /** * Loads a saved PCI device state. * * @returns VBox status code. * @param pDevIns Device instance of the PCI Bus. * @param pPciDev Pointer to PCI device. * @param pSSMHandle The handle to the saved state. */ static DECLCALLBACK(int) pciGenericLoadExec(PPDMDEVINS pDevIns, PPCIDEVICE pPciDev, PSSMHANDLE pSSMHandle) { return SSMR3GetMem(pSSMHandle, &pPciDev->config[0], sizeof(pPciDev->config)); } /** * Saves a state of the PCI device. * * @returns VBox status code. * @param pDevIns The device instance. * @param pPciDev Pointer to PCI device. * @param pSSMHandle The handle to save the state to. */ static DECLCALLBACK(int) pciSaveExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSMHandle) { uint32_t i; PPCIGLOBALS pThis = PDMINS_2_DATA(pDevIns, PPCIGLOBALS); PPCIBUS pBus = &pThis->PciBus; /* * Bus state data. */ SSMR3PutU32(pSSMHandle, pThis->uConfigReg); SSMR3PutBool(pSSMHandle, pThis->fUseIoApic); /* * Save IRQ states. */ for (i = 0; i < PCI_IRQ_PINS; i++) SSMR3PutU32(pSSMHandle, pThis->pci_irq_levels[i]); for (i = 0; i < PCI_APIC_IRQ_PINS; i++) SSMR3PutU32(pSSMHandle, pThis->pci_apic_irq_levels[i]); SSMR3PutU32(pSSMHandle, pThis->acpi_irq_level); SSMR3PutS32(pSSMHandle, pThis->acpi_irq); SSMR3PutU32(pSSMHandle, ~0); /* separator */ /* * Iterate all the devices. */ for (i = 0; i < RT_ELEMENTS(pBus->devices); i++) { PPCIDEVICE pDev = pBus->devices[i]; if (pDev) { int rc; SSMR3PutU32(pSSMHandle, i); SSMR3PutMem(pSSMHandle, pDev->config, sizeof(pDev->config)); rc = SSMR3PutS32(pSSMHandle, pDev->Int.s.uIrqPinState); if (RT_FAILURE(rc)) return rc; } } return SSMR3PutU32(pSSMHandle, ~0); /* terminator */ } /** * Loads a saved PCI device state. * * @returns VBox status code. * @param pDevIns The device instance. * @param pSSMHandle The handle to the saved state. * @param u32Version The data unit version number. */ static DECLCALLBACK(int) pciLoadExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSMHandle, uint32_t u32Version) { PPCIGLOBALS pThis = PDMINS_2_DATA(pDevIns, PPCIGLOBALS); PPCIBUS pBus = &pThis->PciBus; uint32_t u32; uint32_t i; int rc; /* * Check the version. */ if (u32Version > VBOX_PCI_SAVED_STATE_VERSION) { AssertFailed(); return VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION; } /* * Bus state data. */ SSMR3GetU32(pSSMHandle, &pThis->uConfigReg); if (u32Version > 1) SSMR3GetBool(pSSMHandle, &pThis->fUseIoApic); /* Load IRQ states. */ if (u32Version > 2) { for (uint8_t i = 0; i < PCI_IRQ_PINS; i++) SSMR3GetU32(pSSMHandle, (uint32_t *)&pThis->pci_irq_levels[i]); for (uint8_t i = 0; i < PCI_APIC_IRQ_PINS; i++) SSMR3GetU32(pSSMHandle, (uint32_t *)&pThis->pci_apic_irq_levels[i]); SSMR3GetU32(pSSMHandle, &pThis->acpi_irq_level); SSMR3GetS32(pSSMHandle, &pThis->acpi_irq); } /* separator */ rc = SSMR3GetU32(pSSMHandle, &u32); if (RT_FAILURE(rc)) return rc; if (u32 != (uint32_t)~0) AssertMsgFailedReturn(("u32=%#x\n", u32), rc); /* * Iterate all the devices. */ for (i = 0;; i++) { PCIDEVICE DevTmp; PPCIDEVICE pDev; /* index / terminator */ rc = SSMR3GetU32(pSSMHandle, &u32); if (RT_FAILURE(rc)) return rc; if (u32 == (uint32_t)~0) break; if ( u32 >= RT_ELEMENTS(pBus->devices) || u32 < i) { AssertMsgFailed(("u32=%#x i=%#x\n", u32, i)); return rc; } /* skip forward to the device checking that no new devices are present. */ for (; i < u32; i++) { if (pBus->devices[i]) { LogRel(("New device in slot %#x, %s (vendor=%#06x device=%#06x)\n", i, pBus->devices[i]->name, PCIDevGetVendorId(pBus->devices[i]), PCIDevGetDeviceId(pBus->devices[i]))); if (SSMR3HandleGetAfter(pSSMHandle) != SSMAFTER_DEBUG_IT) AssertFailedReturn(VERR_SSM_LOAD_CONFIG_MISMATCH); } } /* Get the data */ DevTmp.Int.s.uIrqPinState = ~0; /* Invalid value in case we have an older saved state to force a state change in pciSetIrq. */ SSMR3GetMem(pSSMHandle, DevTmp.config, sizeof(DevTmp.config)); if (u32Version < 3) { int32_t i32Temp; /* Irq value not needed anymore. */ rc = SSMR3GetS32(pSSMHandle, &i32Temp); if (RT_FAILURE(rc)) return rc; } else { rc = SSMR3GetS32(pSSMHandle, &DevTmp.Int.s.uIrqPinState); if (RT_FAILURE(rc)) return rc; } /* check that it's still around. */ pDev = pBus->devices[i]; if (!pDev) { LogRel(("Device in slot %#x has been removed! vendor=%#06x device=%#06x\n", i, PCIDevGetVendorId(&DevTmp), PCIDevGetDeviceId(&DevTmp))); if (SSMR3HandleGetAfter(pSSMHandle) != SSMAFTER_DEBUG_IT) AssertFailedReturn(VERR_SSM_LOAD_CONFIG_MISMATCH); continue; } /* match the vendor id assuming that this will never be changed. */ if ( DevTmp.config[0] != pDev->config[0] || DevTmp.config[1] != pDev->config[1]) { LogRel(("Device in slot %#x (%s) vendor id mismatch! saved=%.4Rhxs current=%.4Rhxs\n", i, pDev->name, DevTmp.config, pDev->config)); AssertFailedReturn(VERR_SSM_LOAD_CONFIG_MISMATCH); } /* commit the loaded device config. */ memcpy(pDev->config, DevTmp.config, sizeof(pDev->config)); pDev->Int.s.uIrqPinState = DevTmp.Int.s.uIrqPinState; } return VINF_SUCCESS; } /* -=-=-=-=-=- real code -=-=-=-=-=- */ /** * Registers the device with the specified PCI bus. * * @returns VBox status code. * @param pBus The bus to register with. * @param iDev The PCI device ordinal. * @param pPciDev The PCI device structure. * @param pszName Pointer to device name (permanent, readonly). For debugging, not unique. */ static int pciRegisterInternal(PPCIBUS pBus, int iDev, PPCIDEVICE pPciDev, const char *pszName) { /* * Find device slot. */ if (iDev < 0) { /* * Special check for the IDE controller which is our function 1 device * before searching. */ if ( !strcmp(pszName, "piix3ide") && !pBus->devices[9]) iDev = 9; #ifdef VBOX_WITH_LPC /* LPC bus expected to be there by some guests, better make an additional argument to PDM device helpers, but requires significant rewrite */ else if (!strcmp(pszName, "lpc") && !pBus->devices[0xf8]) iDev = 0xf8; #endif else { Assert(!(pBus->iDevSearch % 8)); for (iDev = pBus->iDevSearch; iDev < (int)RT_ELEMENTS(pBus->devices); iDev += 8) if ( !pBus->devices[iDev] && !pBus->devices[iDev + 1] && !pBus->devices[iDev + 2] && !pBus->devices[iDev + 3] && !pBus->devices[iDev + 4] && !pBus->devices[iDev + 5] && !pBus->devices[iDev + 6] && !pBus->devices[iDev + 7]) break; if (iDev >= (int)RT_ELEMENTS(pBus->devices)) { AssertMsgFailed(("Couldn't find free spot!\n")); return VERR_PDM_TOO_PCI_MANY_DEVICES; } } pPciDev->Int.s.fRequestedDevFn = false; } else { /* * An explicit request. * * If the slot is occupied we'll have to relocate the device * currently occupying it first. This can only be done if the * existing device wasn't explicitly assigned. Also we limit * ourselves to function 0 devices. * * If you start setting devices + function in the * config, do it for all pci devices! */ //AssertReleaseMsg(iDev > 8 || pBus->iBus != 0, ("iDev=%d pszName=%s\n", iDev, pszName)); if (pBus->devices[iDev]) { int iDevRel; AssertReleaseMsg(!(iDev % 8), ("PCI Configuration Conflict! iDev=%d pszName=%s clashes with %s\n", iDev, pszName, pBus->devices[iDev]->name)); if ( pBus->devices[iDev]->Int.s.fRequestedDevFn || (pBus->devices[iDev + 1] && pBus->devices[iDev + 1]->Int.s.fRequestedDevFn) || (pBus->devices[iDev + 2] && pBus->devices[iDev + 2]->Int.s.fRequestedDevFn) || (pBus->devices[iDev + 3] && pBus->devices[iDev + 3]->Int.s.fRequestedDevFn) || (pBus->devices[iDev + 4] && pBus->devices[iDev + 4]->Int.s.fRequestedDevFn) || (pBus->devices[iDev + 5] && pBus->devices[iDev + 5]->Int.s.fRequestedDevFn) || (pBus->devices[iDev + 6] && pBus->devices[iDev + 6]->Int.s.fRequestedDevFn) || (pBus->devices[iDev + 7] && pBus->devices[iDev + 7]->Int.s.fRequestedDevFn)) { AssertReleaseMsgFailed(("Configuration error:'%s' and '%s' are both configured as device %d\n", pszName, pBus->devices[iDev]->name, iDev)); return VERR_INTERNAL_ERROR; } /* Find free slot for the device(s) we're moving and move them. */ for (iDevRel = pBus->iDevSearch; iDevRel < (int)RT_ELEMENTS(pBus->devices); iDevRel += 8) { if ( !pBus->devices[iDevRel] && !pBus->devices[iDevRel + 1] && !pBus->devices[iDevRel + 2] && !pBus->devices[iDevRel + 3] && !pBus->devices[iDevRel + 4] && !pBus->devices[iDevRel + 5] && !pBus->devices[iDevRel + 6] && !pBus->devices[iDevRel + 7]) { int i = 0; for (i = 0; i < 8; i++) { if (!pBus->devices[iDev + i]) continue; Log(("PCI: relocating '%s' from slot %#x to %#x\n", pBus->devices[iDev + i]->name, iDev + i, iDevRel + i)); pBus->devices[iDevRel + i] = pBus->devices[iDev + i]; pBus->devices[iDevRel + i]->devfn = i; pBus->devices[iDev + i] = NULL; } } } if (pBus->devices[iDev]) { AssertMsgFailed(("Couldn't find free spot!\n")); return VERR_PDM_TOO_PCI_MANY_DEVICES; } } /* if conflict */ pPciDev->Int.s.fRequestedDevFn = true; } Assert(!pBus->devices[iDev]); pPciDev->devfn = iDev; pPciDev->name = pszName; pPciDev->Int.s.pBusR3 = pBus; pPciDev->Int.s.pBusR0 = MMHyperR3ToR0(PDMDevHlpGetVM(pBus->CTX_SUFF(pDevIns)), pBus); pPciDev->Int.s.pBusRC = MMHyperR3ToRC(PDMDevHlpGetVM(pBus->CTX_SUFF(pDevIns)), pBus); pPciDev->Int.s.pfnConfigRead = pci_default_read_config; pPciDev->Int.s.pfnConfigWrite = pci_default_write_config; pBus->devices[iDev] = pPciDev; if (pPciDev->Int.s.fPciToPciBridge) { AssertMsg(pBus->cBridges < RT_ELEMENTS(pBus->devices), ("Number of bridges exceeds the number of possible devices on the bus\n")); AssertMsg(pPciDev->Int.s.pfnBridgeConfigRead && pPciDev->Int.s.pfnBridgeConfigWrite, ("device is a bridge but does not implement read/write functions\n")); pBus->papBridgesR3[pBus->cBridges] = pPciDev; pBus->cBridges++; } Log(("PCI: Registered device %d function %d (%#x) '%s'.\n", iDev >> 3, iDev & 7, 0x80000000 | (iDev << 8), pszName)); return VINF_SUCCESS; } /** * Registers the device with the default PCI bus. * * @returns VBox status code. * @param pDevIns Device instance of the PCI Bus. * @param pPciDev The PCI device structure. * Any PCI enabled device must keep this in it's instance data! * Fill in the PCI data config before registration, please. * @param pszName Pointer to device name (permanent, readonly). For debugging, not unique. * @param iDev The PCI device number. Use a negative value for auto assigning one. */ static DECLCALLBACK(int) pciRegister(PPDMDEVINS pDevIns, PPCIDEVICE pPciDev, const char *pszName, int iDev) { PPCIBUS pBus = DEVINS_2_PCIBUS(pDevIns); /* * Check input. */ if ( !pszName || !pPciDev || iDev >= (int)RT_ELEMENTS(pBus->devices) || (iDev >= 0 && iDev <= 8)) { AssertMsgFailed(("Invalid argument! pszName=%s pPciDev=%p iDev=%d\n", pszName, pPciDev, iDev)); return VERR_INVALID_PARAMETER; } /* * Register the device. */ return pciRegisterInternal(pBus, iDev, pPciDev, pszName); } static DECLCALLBACK(int) pciIORegionRegister(PPDMDEVINS pDevIns, PPCIDEVICE pPciDev, int iRegion, uint32_t cbRegion, PCIADDRESSSPACE enmType, PFNPCIIOREGIONMAP pfnCallback) { /* * Validate. */ AssertMsgReturn( enmType == PCI_ADDRESS_SPACE_MEM || enmType == PCI_ADDRESS_SPACE_IO || enmType == PCI_ADDRESS_SPACE_MEM_PREFETCH, ("Invalid enmType=%#x? Or was this a bitmask after all...\n", enmType), VERR_INVALID_PARAMETER); AssertMsgReturn((unsigned)iRegion < PCI_NUM_REGIONS, ("Invalid iRegion=%d PCI_NUM_REGIONS=%d\n", iRegion, PCI_NUM_REGIONS), VERR_INVALID_PARAMETER); int iLastSet = ASMBitLastSetU32(cbRegion); AssertMsgReturn( iLastSet != 0 && RT_BIT_32(iLastSet - 1) == cbRegion, ("Invalid cbRegion=%#x iLastSet=%#x (not a power of 2 or 0)\n", cbRegion, iLastSet), VERR_INVALID_PARAMETER); /* * Register the I/O region. */ PPCIIOREGION pRegion = &pPciDev->Int.s.aIORegions[iRegion]; pRegion->addr = ~0U; pRegion->size = cbRegion; pRegion->type = enmType; pRegion->map_func = pfnCallback; /* Set type in the config space. */ uint32_t u32Address = 0x10 + iRegion * 4; uint32_t u32Value = (enmType == PCI_ADDRESS_SPACE_MEM_PREFETCH ? (1 << 3) : 0) | (enmType == PCI_ADDRESS_SPACE_IO ? 1 : 0); *(uint32_t *)(pPciDev->config + u32Address) = RT_H2LE_U32(u32Value); return VINF_SUCCESS; } /** * @copydoc PDMPCIBUSREG::pfnSetConfigCallbacksR3 */ static DECLCALLBACK(void) pciSetConfigCallbacks(PPDMDEVINS pDevIns, PPCIDEVICE pPciDev, PFNPCICONFIGREAD pfnRead, PPFNPCICONFIGREAD ppfnReadOld, PFNPCICONFIGWRITE pfnWrite, PPFNPCICONFIGWRITE ppfnWriteOld) { if (ppfnReadOld) *ppfnReadOld = pPciDev->Int.s.pfnConfigRead; pPciDev->Int.s.pfnConfigRead = pfnRead; if (ppfnWriteOld) *ppfnWriteOld = pPciDev->Int.s.pfnConfigWrite; pPciDev->Int.s.pfnConfigWrite = pfnWrite; } /** * Called to perform the job of the bios. * * @returns VBox status. * @param pDevIns Device instance of the first bus. */ static DECLCALLBACK(int) pciFakePCIBIOS(PPDMDEVINS pDevIns) { int rc; unsigned i; uint8_t elcr[2] = {0, 0}; PPCIGLOBALS pGlobals = PDMINS_2_DATA(pDevIns, PPCIGLOBALS); PVM pVM = PDMDevHlpGetVM(pDevIns); Assert(pVM); /* * Set the start addresses. */ pGlobals->pci_bios_io_addr = 0xc000; pGlobals->pci_bios_mem_addr = UINT32_C(0xf0000000); pGlobals->uBus = 0; /* * Activate IRQ mappings. */ for (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. */ pci_config_writeb(pGlobals, 0, pGlobals->PIIX3State.dev.devfn, 0x60 + i, irq); } /* Tell to the PIC. */ rc = IOMIOPortWrite(pVM, 0x4d0, elcr[0], sizeof(uint8_t)); if (rc == VINF_SUCCESS) rc = IOMIOPortWrite(pVM, 0x4d1, elcr[1], sizeof(uint8_t)); if (rc != VINF_SUCCESS) { AssertMsgFailed(("Writing to PIC failed!\n")); return RT_SUCCESS(rc) ? VERR_INTERNAL_ERROR : rc; } /* * Init the devices. */ for (i = 0; i < 256; i++) { uint8_t aBridgePositions[256]; memset(aBridgePositions, 0, sizeof(aBridgePositions)); Log2(("PCI: Initializing device %d (%#x)\n", i, 0x80000000 | (i << 8))); pci_bios_init_device(pGlobals, 0, i, 0, aBridgePositions); } return VINF_SUCCESS; } /** * @copydoc FNPDMDEVRELOCATE */ static DECLCALLBACK(void) pciRelocate(PPDMDEVINS pDevIns, RTGCINTPTR offDelta) { PPCIGLOBALS pGlobals = PDMINS_2_DATA(pDevIns, PPCIGLOBALS); PPCIBUS pBus = &pGlobals->PciBus; pGlobals->pDevInsRC = PDMDEVINS_2_RCPTR(pDevIns); pBus->pPciHlpRC = pBus->pPciHlpR3->pfnGetRCHelpers(pDevIns); pBus->pDevInsRC = PDMDEVINS_2_RCPTR(pDevIns); /* Relocate RC pointers for the attached pci devices. */ for (uint32_t i = 0; i < RT_ELEMENTS(pBus->devices); i++) { if (pBus->devices[i]) pBus->devices[i]->Int.s.pBusRC += offDelta; } } /** * Construct a host to PCI Bus device instance for a VM. * * @returns VBox status. * @param pDevIns The device instance data. * If the registration structure is needed, pDevIns->pDevReg points to it. * @param iInstance Instance number. Use this to figure out which registers and such to use. * The device number is also found in pDevIns->iInstance, but since it's * likely to be freqently used PDM passes it as parameter. * @param pCfgHandle Configuration node handle for the device. Use this to obtain the configuration * of the device instance. It's also found in pDevIns->pCfgHandle, but like * iInstance it's expected to be used a bit in this function. */ static DECLCALLBACK(int) pciConstruct(PPDMDEVINS pDevIns, int iInstance, PCFGMNODE pCfgHandle) { int rc; Assert(iInstance == 0); /* * Validate and read configuration. */ if (!CFGMR3AreValuesValid(pCfgHandle, "IOAPIC\0" "GCEnabled\0" "R0Enabled\0")) return VERR_PDM_DEVINS_UNKNOWN_CFG_VALUES; /* query whether we got an IOAPIC */ bool fUseIoApic; rc = CFGMR3QueryBoolDef(pCfgHandle, "IOAPIC", &fUseIoApic, false); if (RT_FAILURE(rc)) return PDMDEV_SET_ERROR(pDevIns, rc, N_("Configuration error: Failed to query boolean value \"IOAPIC\"")); /* check if RC code is enabled. */ bool fGCEnabled; rc = CFGMR3QueryBoolDef(pCfgHandle, "GCEnabled", &fGCEnabled, true); if (RT_FAILURE(rc)) return PDMDEV_SET_ERROR(pDevIns, rc, N_("Configuration error: Failed to query boolean value \"GCEnabled\"")); /* check if R0 code is enabled. */ bool fR0Enabled; rc = CFGMR3QueryBoolDef(pCfgHandle, "R0Enabled", &fR0Enabled, true); if (RT_FAILURE(rc)) return PDMDEV_SET_ERROR(pDevIns, rc, N_("Configuration error: Failed to query boolean value \"R0Enabled\"")); Log(("PCI: fUseIoApic=%RTbool fGCEnabled=%RTbool fR0Enabled=%RTbool\n", fUseIoApic, fGCEnabled, fR0Enabled)); /* * Init data and register the PCI bus. */ PPCIGLOBALS pGlobals = PDMINS_2_DATA(pDevIns, PPCIGLOBALS); pGlobals->pci_bios_io_addr = 0xc000; pGlobals->pci_bios_mem_addr = 0xf0000000; memset((void *)&pGlobals->pci_irq_levels, 0, sizeof(pGlobals->pci_irq_levels)); pGlobals->fUseIoApic = fUseIoApic; memset((void *)&pGlobals->pci_apic_irq_levels, 0, sizeof(pGlobals->pci_apic_irq_levels)); pGlobals->pDevInsR3 = pDevIns; pGlobals->pDevInsR0 = PDMDEVINS_2_R0PTR(pDevIns); pGlobals->pDevInsRC = PDMDEVINS_2_RCPTR(pDevIns); pGlobals->PciBus.pDevInsR3 = pDevIns; pGlobals->PciBus.pDevInsR0 = PDMDEVINS_2_R0PTR(pDevIns); pGlobals->PciBus.pDevInsRC = PDMDEVINS_2_RCPTR(pDevIns); pGlobals->PciBus.papBridgesR3 = (PPCIDEVICE *)PDMDevHlpMMHeapAllocZ(pDevIns, sizeof(PPCIDEVICE) * RT_ELEMENTS(pGlobals->PciBus.devices)); PDMPCIBUSREG PciBusReg; PPCIBUS pBus = &pGlobals->PciBus; PciBusReg.u32Version = PDM_PCIBUSREG_VERSION; PciBusReg.pfnRegisterR3 = pciRegister; PciBusReg.pfnIORegionRegisterR3 = pciIORegionRegister; PciBusReg.pfnSetConfigCallbacksR3 = pciSetConfigCallbacks; PciBusReg.pfnSetIrqR3 = pciSetIrq; PciBusReg.pfnSaveExecR3 = pciGenericSaveExec; PciBusReg.pfnLoadExecR3 = pciGenericLoadExec; PciBusReg.pfnFakePCIBIOSR3 = pciFakePCIBIOS; PciBusReg.pszSetIrqRC = fGCEnabled ? "pciSetIrq" : NULL; PciBusReg.pszSetIrqR0 = fR0Enabled ? "pciSetIrq" : NULL; rc = pDevIns->pDevHlpR3->pfnPCIBusRegister(pDevIns, &PciBusReg, &pBus->pPciHlpR3); if (RT_FAILURE(rc)) return PDMDEV_SET_ERROR(pDevIns, rc, N_("Failed to register ourselves as a PCI Bus")); if (pBus->pPciHlpR3->u32Version != PDM_PCIHLPR3_VERSION) return PDMDevHlpVMSetError(pDevIns, VERR_VERSION_MISMATCH, RT_SRC_POS, N_("PCI helper version mismatch; got %#x expected %#x"), pBus->pPciHlpR3->u32Version != PDM_PCIHLPR3_VERSION); pBus->pPciHlpRC = pBus->pPciHlpR3->pfnGetRCHelpers(pDevIns); pBus->pPciHlpR0 = pBus->pPciHlpR3->pfnGetR0Helpers(pDevIns); /* * Fill in PCI configs and add them to the bus. */ /* i440FX */ PCIDevSetVendorId( &pBus->PciDev, 0x8086); /* Intel */ PCIDevSetDeviceId( &pBus->PciDev, 0x1237); PCIDevSetRevisionId(&pBus->PciDev, 0x02); PCIDevSetClassSub( &pBus->PciDev, 0x00); /* host2pci */ PCIDevSetClassBase( &pBus->PciDev, 0x06); /* PCI_bridge */ PCIDevSetHeaderType(&pBus->PciDev, 0x00); pBus->PciDev.pDevIns = pDevIns; pBus->PciDev.Int.s.fRequestedDevFn= true; pciRegisterInternal(pBus, 0, &pBus->PciDev, "i440FX"); /* PIIX3 */ PCIDevSetVendorId( &pGlobals->PIIX3State.dev, 0x8086); /* Intel */ PCIDevSetDeviceId( &pGlobals->PIIX3State.dev, 0x7000); /* 82371SB PIIX3 PCI-to-ISA bridge (Step A1) */ PCIDevSetClassSub( &pGlobals->PIIX3State.dev, 0x01); /* PCI_ISA */ PCIDevSetClassBase( &pGlobals->PIIX3State.dev, 0x06); /* PCI_bridge */ PCIDevSetHeaderType(&pGlobals->PIIX3State.dev, 0x80); /* PCI_multifunction, generic */ pGlobals->PIIX3State.dev.pDevIns = pDevIns; pGlobals->PIIX3State.dev.Int.s.fRequestedDevFn= true; pciRegisterInternal(pBus, 8, &pGlobals->PIIX3State.dev, "PIIX3"); piix3_reset(&pGlobals->PIIX3State); pBus->iDevSearch = 16; /* * Register I/O ports and save state. */ rc = PDMDevHlpIOPortRegister(pDevIns, 0x0cf8, 1, NULL, pciIOPortAddressWrite, pciIOPortAddressRead, NULL, NULL, "i440FX (PCI)"); if (RT_FAILURE(rc)) return rc; rc = PDMDevHlpIOPortRegister(pDevIns, 0x0cfc, 4, NULL, pciIOPortDataWrite, pciIOPortDataRead, NULL, NULL, "i440FX (PCI)"); if (RT_FAILURE(rc)) return rc; if (fGCEnabled) { rc = PDMDevHlpIOPortRegisterGC(pDevIns, 0x0cf8, 1, NIL_RTGCPTR, "pciIOPortAddressWrite", "pciIOPortAddressRead", NULL, NULL, "i440FX (PCI)"); if (RT_FAILURE(rc)) return rc; rc = PDMDevHlpIOPortRegisterGC(pDevIns, 0x0cfc, 4, NIL_RTGCPTR, "pciIOPortDataWrite", "pciIOPortDataRead", NULL, NULL, "i440FX (PCI)"); if (RT_FAILURE(rc)) return rc; } if (fR0Enabled) { rc = PDMDevHlpIOPortRegisterR0(pDevIns, 0x0cf8, 1, NIL_RTR0PTR, "pciIOPortAddressWrite", "pciIOPortAddressRead", NULL, NULL, "i440FX (PCI)"); if (RT_FAILURE(rc)) return rc; rc = PDMDevHlpIOPortRegisterR0(pDevIns, 0x0cfc, 4, NIL_RTR0PTR, "pciIOPortDataWrite", "pciIOPortDataRead", NULL, NULL, "i440FX (PCI)"); if (RT_FAILURE(rc)) return rc; } rc = PDMDevHlpSSMRegister(pDevIns, "pci", iInstance, VBOX_PCI_SAVED_STATE_VERSION, sizeof(*pBus), NULL, pciSaveExec, NULL, NULL, pciLoadExec, NULL); if (RT_FAILURE(rc)) return rc; return VINF_SUCCESS; } /** * The device registration structure. */ const PDMDEVREG g_DevicePCI = { /* u32Version */ PDM_DEVREG_VERSION, /* szDeviceName */ "pci", /* szRCMod */ "VBoxDDGC.gc", /* szR0Mod */ "VBoxDDR0.r0", /* pszDescription */ "i440FX PCI bridge and PIIX3 ISA bridge.", /* fFlags */ PDM_DEVREG_FLAGS_DEFAULT_BITS | PDM_DEVREG_FLAGS_RC | PDM_DEVREG_FLAGS_R0, /* fClass */ PDM_DEVREG_CLASS_BUS_PCI | PDM_DEVREG_CLASS_BUS_ISA, /* cMaxInstances */ 1, /* cbInstance */ sizeof(PCIGLOBALS), /* pfnConstruct */ pciConstruct, /* pfnDestruct */ NULL, /* pfnRelocate */ pciRelocate, /* pfnIOCtl */ NULL, /* pfnPowerOn */ NULL, /* pfnReset */ NULL, /* pfnSuspend */ NULL, /* pfnResume */ NULL, /* pfnAttach */ NULL, /* pfnDetach */ NULL, /* pfnQueryInterface */ NULL, /* pfnInitComplete */ NULL, /* pfnPowerOff */ NULL, /* pfnSoftReset */ NULL, /* u32VersionEnd */ PDM_DEVREG_VERSION }; #endif /* IN_RING3 */ /** * Set the IRQ for a PCI device on a secondary bus. * * @param pDevIns Device instance of the PCI Bus. * @param pPciDev The PCI device structure. * @param iIrq IRQ number to set. * @param iLevel IRQ level. */ PDMBOTHCBDECL(void) pcibridgeSetIrq(PPDMDEVINS pDevIns, PPCIDEVICE pPciDev, int iIrq, int iLevel) { /* * 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. */ PPCIBUS pBus = PDMINS_2_DATA(pDevIns, PPCIBUS); int iIrqPinBridge = 0; uint8_t uDevFnBridge = pPciDev->devfn; /* Walk the chain until we reach the host bus. */ while (pBus->iBus != 0) { uDevFnBridge = pBus->PciDev.devfn; iIrqPinBridge = ((uDevFnBridge >> 3) + iIrqPinBridge) & 3; /* Get the parent. */ pBus = pBus->PciDev.Int.s.CTX_SUFF(pBus); } AssertMsg(pBus->iBus == 0, ("This is not the host pci bus iBus=%d\n", pBus->iBus)); pciSetIrqInternal(PCIBUS_2_PCIGLOBALS(pBus), uDevFnBridge, pPciDev, iIrqPinBridge, iLevel); } #ifdef IN_RING3 static void pcibridgeConfigWrite(PPDMDEVINSR3 pDevIns, uint8_t iBus, uint8_t iDevice, uint32_t u32Address, uint32_t u32Value, unsigned cb) { PPCIBUS pBus = PDMINS_2_DATA(pDevIns, PPCIBUS); LogFlowFunc((": pDevIns=%p iBus=%d iDevice=%d u32Address=%u u32Value=%u cb=%d\n", pDevIns, iBus, iDevice, u32Address, u32Value, cb)); /* If the current bus is not the target bus search for the bus which contains the device. */ if (iBus != pBus->PciDev.config[VBOX_PCI_SECONDARY_BUS]) { PPCIDEVICE pBridgeDevice = pciFindBridge(pBus, iBus); if (pBridgeDevice) { AssertPtr(pBridgeDevice->Int.s.pfnBridgeConfigWrite); pBridgeDevice->Int.s.pfnBridgeConfigWrite(pBridgeDevice->pDevIns, iBus, iDevice, u32Address, u32Value, cb); } } else { /* This is the target bus, pass the write to the device. */ PPCIDEVICE pPciDev = pBus->devices[iDevice]; if (pPciDev) { Log(("%s: %s: addr=%02x val=%08x len=%d\n", __FUNCTION__, pPciDev->name, u32Address, u32Value, cb)); pPciDev->Int.s.pfnConfigWrite(pPciDev, u32Address, u32Value, cb); } } } static uint32_t pcibridgeConfigRead(PPDMDEVINSR3 pDevIns, uint8_t iBus, uint8_t iDevice, uint32_t u32Address, unsigned cb) { PPCIBUS pBus = PDMINS_2_DATA(pDevIns, PPCIBUS); uint32_t u32Value = 0xffffffff; /* Return value in case there is no device. */ LogFlowFunc((": pDevIns=%p iBus=%d iDevice=%d u32Address=%u cb=%d\n", pDevIns, iBus, iDevice, u32Address, cb)); /* If the current bus is not the target bus search for the bus which contains the device. */ if (iBus != pBus->PciDev.config[VBOX_PCI_SECONDARY_BUS]) { PPCIDEVICE pBridgeDevice = pciFindBridge(pBus, iBus); if (pBridgeDevice) { AssertPtr( pBridgeDevice->Int.s.pfnBridgeConfigRead); u32Value = pBridgeDevice->Int.s.pfnBridgeConfigRead(pBridgeDevice->pDevIns, iBus, iDevice, u32Address, cb); } } else { /* This is the target bus, pass the read to the device. */ PPCIDEVICE pPciDev = pBus->devices[iDevice]; if (pPciDev) { u32Value = pPciDev->Int.s.pfnConfigRead(pPciDev, u32Address, cb); Log(("%s: %s: u32Address=%02x u32Value=%08x cb=%d\n", __FUNCTION__, pPciDev->name, u32Address, u32Value, cb)); } } return u32Value; } /** * Saves a state of a PCI bridge device. * * @returns VBox status code. * @param pDevIns The device instance. * @param pPciDev Pointer to PCI device. * @param pSSMHandle The handle to save the state to. */ static DECLCALLBACK(int) pcibridgeSaveExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSMHandle) { uint32_t i; PPCIBUS pThis = PDMINS_2_DATA(pDevIns, PPCIBUS); /* * Iterate all the devices. */ for (i = 0; i < RT_ELEMENTS(pThis->devices); i++) { PPCIDEVICE pDev = pThis->devices[i]; if (pDev) { int rc; SSMR3PutU32(pSSMHandle, i); SSMR3PutMem(pSSMHandle, pDev->config, sizeof(pDev->config)); rc = SSMR3PutS32(pSSMHandle, pDev->Int.s.uIrqPinState); if (RT_FAILURE(rc)) return rc; } } return SSMR3PutU32(pSSMHandle, ~0); /* terminator */ } /** * Loads a saved PCI bridge device state. * * @returns VBox status code. * @param pDevIns The device instance. * @param pSSMHandle The handle to the saved state. * @param u32Version The data unit version number. */ static DECLCALLBACK(int) pcibridgeLoadExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSMHandle, uint32_t u32Version) { PPCIBUS pBus = PDMINS_2_DATA(pDevIns, PPCIBUS); uint32_t u32; uint32_t i; int rc; /* * Check the version. */ if (u32Version > VBOX_PCI_SAVED_STATE_VERSION) { AssertFailed(); return VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION; } /* * Iterate all the devices. */ for (i = 0;; i++) { PCIDEVICE DevTmp; PPCIDEVICE pDev; /* index / terminator */ rc = SSMR3GetU32(pSSMHandle, &u32); if (RT_FAILURE(rc)) return rc; if (u32 == (uint32_t)~0) break; if ( u32 >= RT_ELEMENTS(pBus->devices) || u32 < i) { AssertMsgFailed(("u32=%#x i=%#x\n", u32, i)); return rc; } /* skip forward to the device checking that no new devices are present. */ for (; i < u32; i++) { if (pBus->devices[i]) { LogRel(("New device in slot %#x, %s (vendor=%#06x device=%#06x)\n", i, pBus->devices[i]->name, PCIDevGetVendorId(pBus->devices[i]), PCIDevGetDeviceId(pBus->devices[i]))); if (SSMR3HandleGetAfter(pSSMHandle) != SSMAFTER_DEBUG_IT) AssertFailedReturn(VERR_SSM_LOAD_CONFIG_MISMATCH); } } /* get the data */ DevTmp.Int.s.uIrqPinState = 0; SSMR3GetMem(pSSMHandle, DevTmp.config, sizeof(DevTmp.config)); rc = SSMR3GetS32(pSSMHandle, &DevTmp.Int.s.uIrqPinState); if (RT_FAILURE(rc)) return rc; /* check that it's still around. */ pDev = pBus->devices[i]; if (!pDev) { LogRel(("Device in slot %#x has been removed! vendor=%#06x device=%#06x\n", i, PCIDevGetVendorId(&DevTmp), PCIDevGetDeviceId(&DevTmp))); if (SSMR3HandleGetAfter(pSSMHandle) != SSMAFTER_DEBUG_IT) AssertFailedReturn(VERR_SSM_LOAD_CONFIG_MISMATCH); continue; } /* match the vendor id assuming that this will never be changed. */ if ( DevTmp.config[0] != pDev->config[0] || DevTmp.config[1] != pDev->config[1]) { LogRel(("Device in slot %#x (%s) vendor id mismatch! saved=%.4Rhxs current=%.4Rhxs\n", i, pDev->name, DevTmp.config, pDev->config)); AssertFailedReturn(VERR_SSM_LOAD_CONFIG_MISMATCH); } /* commit the loaded device config. */ memcpy(pDev->config, DevTmp.config, sizeof(pDev->config)); pDev->Int.s.uIrqPinState = DevTmp.Int.s.uIrqPinState; } return VINF_SUCCESS; } /** * @copydoc FNPDMDEVRESET */ static DECLCALLBACK(void) pcibridgeReset(PPDMDEVINS pDevIns) { PPCIBUS pBus = PDMINS_2_DATA(pDevIns, PPCIBUS); /* Reset config space to default values. */ pBus->PciDev.config[VBOX_PCI_PRIMARY_BUS] = 0; pBus->PciDev.config[VBOX_PCI_SECONDARY_BUS] = 0; pBus->PciDev.config[VBOX_PCI_SUBORDINATE_BUS] = 0; } /** * @copydoc FNPDMDEVRELOCATE */ static DECLCALLBACK(void) pcibridgeRelocate(PPDMDEVINS pDevIns, RTGCINTPTR offDelta) { PPCIBUS pBus = PDMINS_2_DATA(pDevIns, PPCIBUS); pBus->pDevInsRC = PDMDEVINS_2_RCPTR(pDevIns); /* Relocate RC pointers for the attached pci devices. */ for (uint32_t i = 0; i < RT_ELEMENTS(pBus->devices); i++) { if (pBus->devices[i]) pBus->devices[i]->Int.s.pBusRC += offDelta; } } /** * Registers the device with the default PCI bus. * * @returns VBox status code. * @param pDevIns Device instance of the PCI Bus. * @param pPciDev The PCI device structure. * Any PCI enabled device must keep this in it's instance data! * Fill in the PCI data config before registration, please. * @param pszName Pointer to device name (permanent, readonly). For debugging, not unique. * @param iDev The PCI device number. Use a negative value for auto assigning one. */ static DECLCALLBACK(int) pcibridgeRegister(PPDMDEVINS pDevIns, PPCIDEVICE pPciDev, const char *pszName, int iDev) { PPCIBUS pBus = PDMINS_2_DATA(pDevIns, PPCIBUS); /* * Check input. */ if ( !pszName || !pPciDev || iDev >= (int)RT_ELEMENTS(pBus->devices)) { AssertMsgFailed(("Invalid argument! pszName=%s pPciDev=%p iDev=%d\n", pszName, pPciDev, iDev)); return VERR_INVALID_PARAMETER; } /* * Register the device. */ return pciRegisterInternal(pBus, iDev, pPciDev, pszName); } /** * Construct a PCI bridge device instance for a VM. * * @returns VBox status. * @param pDevIns The device instance data. * If the registration structure is needed, pDevIns->pDevReg points to it. * @param iInstance Instance number. Use this to figure out which registers and such to use. * The device number is also found in pDevIns->iInstance, but since it's * likely to be freqently used PDM passes it as parameter. * @param pCfgHandle Configuration node handle for the device. Use this to obtain the configuration * of the device instance. It's also found in pDevIns->pCfgHandle, but like * iInstance it's expected to be used a bit in this function. */ static DECLCALLBACK(int) pcibridgeConstruct(PPDMDEVINS pDevIns, int iInstance, PCFGMNODE pCfgHandle) { int rc; /* * Validate and read configuration. */ if (!CFGMR3AreValuesValid(pCfgHandle, "GCEnabled\0" "R0Enabled\0")) return VERR_PDM_DEVINS_UNKNOWN_CFG_VALUES; /* check if RC code is enabled. */ bool fGCEnabled; rc = CFGMR3QueryBoolDef(pCfgHandle, "GCEnabled", &fGCEnabled, true); if (RT_FAILURE(rc)) return PDMDEV_SET_ERROR(pDevIns, rc, N_("Configuration error: Failed to query boolean value \"GCEnabled\"")); /* check if R0 code is enabled. */ bool fR0Enabled; rc = CFGMR3QueryBoolDef(pCfgHandle, "R0Enabled", &fR0Enabled, true); if (RT_FAILURE(rc)) return PDMDEV_SET_ERROR(pDevIns, rc, N_("Configuration error: Failed to query boolean value \"R0Enabled\"")); Log(("PCI: fGCEnabled=%RTbool fR0Enabled=%RTbool\n", fGCEnabled, fR0Enabled)); /* * Init data and register the PCI bus. */ PPCIBUS pBus = PDMINS_2_DATA(pDevIns, PPCIBUS); pBus->pDevInsR3 = pDevIns; pBus->pDevInsR0 = PDMDEVINS_2_R0PTR(pDevIns); pBus->pDevInsRC = PDMDEVINS_2_RCPTR(pDevIns); pBus->papBridgesR3 = (PPCIDEVICE *)PDMDevHlpMMHeapAllocZ(pDevIns, sizeof(PPCIDEVICE) * RT_ELEMENTS(pBus->devices)); PDMPCIBUSREG PciBusReg; PciBusReg.u32Version = PDM_PCIBUSREG_VERSION; PciBusReg.pfnRegisterR3 = pcibridgeRegister; PciBusReg.pfnIORegionRegisterR3 = pciIORegionRegister; PciBusReg.pfnSetConfigCallbacksR3 = pciSetConfigCallbacks; PciBusReg.pfnSetIrqR3 = pcibridgeSetIrq; PciBusReg.pfnSaveExecR3 = pciGenericSaveExec; PciBusReg.pfnLoadExecR3 = pciGenericLoadExec; PciBusReg.pfnFakePCIBIOSR3 = NULL; /* Only needed for the first bus. */ PciBusReg.pszSetIrqRC = fGCEnabled ? "pcibridgeSetIrq" : NULL; PciBusReg.pszSetIrqR0 = fR0Enabled ? "pcibridgeSetIrq" : NULL; rc = pDevIns->pDevHlpR3->pfnPCIBusRegister(pDevIns, &PciBusReg, &pBus->pPciHlpR3); if (RT_FAILURE(rc)) return PDMDEV_SET_ERROR(pDevIns, rc, N_("Failed to register ourselves as a PCI Bus")); if (pBus->pPciHlpR3->u32Version != PDM_PCIHLPR3_VERSION) return PDMDevHlpVMSetError(pDevIns, VERR_VERSION_MISMATCH, RT_SRC_POS, N_("PCI helper version mismatch; got %#x expected %#x"), pBus->pPciHlpR3->u32Version, PDM_PCIHLPR3_VERSION); pBus->pPciHlpRC = pBus->pPciHlpR3->pfnGetRCHelpers(pDevIns); pBus->pPciHlpR0 = pBus->pPciHlpR3->pfnGetR0Helpers(pDevIns); /* * Fill in PCI configs and add them to the bus. */ PCIDevSetVendorId( &pBus->PciDev, 0x8086); /* Intel */ PCIDevSetDeviceId( &pBus->PciDev, 0x2448); /* 82801 Mobile PCI bridge. */ PCIDevSetRevisionId(&pBus->PciDev, 0xf2); PCIDevSetClassSub( &pBus->PciDev, 0x04); /* pci2pci */ PCIDevSetClassBase( &pBus->PciDev, 0x06); /* PCI_bridge */ PCIDevSetClassProg( &pBus->PciDev, 0x01); /* Supports subtractive decoding. */ PCIDevSetHeaderType(&pBus->PciDev, 0x01); /* Single function device which adheres to the PCI-to-PCI bridge spec. */ PCIDevSetCommand( &pBus->PciDev, 0x00); PCIDevSetStatus( &pBus->PciDev, 0x20); /* 66MHz Capable. */ PCIDevSetInterruptLine(&pBus->PciDev, 0x00); /* This device does not assert interrupts. */ /* * This device does not generate interrupts. Interrupt delivery from * devices attached to the bus is unaffected. */ PCIDevSetInterruptPin (&pBus->PciDev, 0x00); pBus->PciDev.pDevIns = pDevIns; pBus->PciDev.Int.s.fPciToPciBridge = true; pBus->PciDev.Int.s.pfnBridgeConfigRead = pcibridgeConfigRead; pBus->PciDev.Int.s.pfnBridgeConfigWrite = pcibridgeConfigWrite; /* * Register this PCI bridge. The called function will take care on which bus we will get registered. */ rc = PDMDevHlpPCIRegister (pDevIns, &pBus->PciDev); if (RT_FAILURE(rc)) return rc; pBus->iDevSearch = 0; /* * The iBus property doesn't really represent the bus number * because the guest and the BIOS can choose different bus numbers * for them. * The bus number is mainly for the setIrq function to indicate * when the host bus is reached which will have iBus = 0. * Thathswhy the + 1. */ pBus->iBus = iInstance + 1; /* * Register SSM handlers. We use the same saved state version as for the host bridge * to make changes easier. */ rc = PDMDevHlpSSMRegister(pDevIns, "pcibridge", iInstance, VBOX_PCI_SAVED_STATE_VERSION, sizeof(*pBus), NULL, pcibridgeSaveExec, NULL, NULL, pcibridgeLoadExec, NULL); if (RT_FAILURE(rc)) return rc; return VINF_SUCCESS; } /** * The device registration structure * for the PCI-to-PCI bridge. */ const PDMDEVREG g_DevicePCIBridge = { /* u32Version */ PDM_DEVREG_VERSION, /* szDeviceName */ "pcibridge", /* szRCMod */ "VBoxDDGC.gc", /* szR0Mod */ "VBoxDDR0.r0", /* pszDescription */ "82801 Mobile PCI to PCI bridge", /* fFlags */ PDM_DEVREG_FLAGS_DEFAULT_BITS | PDM_DEVREG_FLAGS_RC | PDM_DEVREG_FLAGS_R0, /* fClass */ PDM_DEVREG_CLASS_BUS_PCI, /* cMaxInstances */ ~0, /* cbInstance */ sizeof(PCIBUS), /* pfnConstruct */ pcibridgeConstruct, /* pfnDestruct */ NULL, /* pfnRelocate */ pcibridgeRelocate, /* pfnIOCtl */ NULL, /* pfnPowerOn */ NULL, /* pfnReset */ pcibridgeReset, /* pfnSuspend */ NULL, /* pfnResume */ NULL, /* pfnAttach */ NULL, /* pfnDetach */ NULL, /* pfnQueryInterface */ NULL, /* pfnInitComplete */ NULL, /* pfnPowerOff */ NULL, /* pfnSoftReset */ NULL, /* u32VersionEnd */ PDM_DEVREG_VERSION }; #endif /* IN_RING3 */ #endif /* !VBOX_DEVICE_STRUCT_TESTCASE */