/* $Id: DevPCI.cpp 45025 2013-03-13 16:45:15Z vboxsync $ */ /** @file * DevPCI - PCI BUS Device. */ /* * Copyright (C) 2006-2013 Oracle Corporation * * 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. * -------------------------------------------------------------------- * * 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 declared at the right point - include "PCIInternal.h". */ #define PCI_INCLUDE_PRIVATE #include #include #include #include #include #include "VBoxDD.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 PCI bus device instance pointer to a PCIGLOBALS pointer. */ #define DEVINS_2_PCIGLOBALS(pDevIns) ((PPCIGLOBALS)(PDMINS_2_DATA(pDevIns, PPCIGLOBALS))) /** Converts a PCI bus 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) RT_FROM_MEMBER(pPciBus, 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 * *******************************************************************************/ RT_C_DECLS_BEGIN PDMBOTHCBDECL(void) pciSetIrq(PPDMDEVINS pDevIns, PPCIDEVICE pPciDev, int iIrq, int iLevel, uint32_t uTag); PDMBOTHCBDECL(void) pcibridgeSetIrq(PPDMDEVINS pDevIns, PPCIDEVICE pPciDev, int iIrq, int iLevel, uint32_t uTag); 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) pciR3FindBridge(PPCIBUS 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 */ #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 = PDMDevHlpIOPortDeregister(d->pDevIns, r->addr + 2, 1); AssertRC(rc); } else { int rc = PDMDevHlpIOPortDeregister(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 = PDMDevHlpMMIODeregister(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 0x34: /* Capabilities pointer. */ case 0x3d: /* Interrupt pin. */ 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 == 0x05) /* Command register, bits 8-15. */ { /* don't change reserved bits (11-15) */ val &= UINT32_C(~0xf8); d->config[addr] = val; } else if (addr == 0x06) /* Status register, bits 0-7. */ { /* 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) /* Status register, bits 8-15. */ { /* 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 = pciR3FindBridge(&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_R3_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_R3_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 = pciR3FindBridge(&pGlobals->PciBus, iBus); if (pBridgeDevice) { AssertPtr(pBridgeDevice->Int.s.pfnBridgeConfigRead); *pu32 = pBridgeDevice->Int.s.pfnBridgeConfigRead(pBridgeDevice->pDevIns, iBus, iDevice, config_addr, len); } #else NOREF(len); return VINF_IOM_R3_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 NOREF(len); return VINF_IOM_R3_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, 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)); 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, uTagSrc); 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, uTagSrc); } } 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, uTagSrc); } } 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. * @param uTagSrc The IRQ tag and source ID (for tracing). * @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, uint32_t uTagSrc) { PPCIBUS pBus = &pGlobals->PciBus; uint8_t *pbCfg = pGlobals->PIIX3State.dev.config; const bool fIsAcpiDevice = pPciDev->config[2] == 0x13 && pPciDev->config[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(pBus, uDevFn, pPciDev, -1, iLevel, pPciDev->config[PCI_INTERRUPT_LINE], uTagSrc); else apic_set_irq(pBus, uDevFn, pPciDev, iIrq, iLevel, -1, uTagSrc); 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 uTagSrc=%#x\n", R3STRING(pPciDev->name), iLevel, iIrq, pic_irq, pic_level, uTagSrc)); pBus->CTX_SUFF(pPciHlp)->pfnIsaSetIrq(pBus->CTX_SUFF(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(pGlobals, uDevFn, pPciDev, iIrq, PDM_IRQ_LEVEL_LOW, uTagSrc); } } /** * @interface_method_impl{PDMPCIBUSREG,pfnSetIrq} */ PDMBOTHCBDECL(void) pciSetIrq(PPDMDEVINS pDevIns, PPCIDEVICE pPciDev, int iIrq, int iLevel, uint32_t uTagSrc) { pciSetIrqInternal(PDMINS_2_DATA(pDevIns, PPCIGLOBALS), pPciDev->devfn, 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(PPCIDEVICE) pciR3FindBridge(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 && pciDevIsPci2PciBridge(pBridgeTemp), ("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 pciR3Piix3Reset(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); /* * Legacy VGA I/O ports are implicitly decoded by a VGA class device. But * only the framebuffer (i.e., a memory region) is explicitly registered via * pci_set_io_region_addr, so I/O decoding must be enabled manually. */ pci_config_writeb(pGlobals, uBus, uDevFn, PCI_COMMAND, pci_config_readb(pGlobals, uBus, uDevFn, PCI_COMMAND) | 1 /* Enable I/O space access. */); 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 iDev = 0; iDev <= 255; iDev++) pci_bios_init_device(pGlobals, uBus + 1, iDev, 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. That's why 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 resource information depending on resource 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 */ /* -=-=-=-=-=- I/O ports -=-=-=-=-=- */ /** * @callback_method_impl{FNIOMIOPORTOUT, PCI address} */ 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_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{FNIOMIOPORTIN, PCI address} */ 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_R3_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; } /** * @callback_method_impl{FNIOMIOPORTOUT, PCI data} */ 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_R3_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; } /** * @callback_method_impl{FNIOMIOPORTIN, PCI data} */ PDMBOTHCBDECL(int) pciIOPortDataRead(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT Port, uint32_t *pu32, unsigned cb) { NOREF(pvUser); if (!(Port % cb)) { PCI_LOCK(pDevIns, VINF_IOM_R3_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 /* -=-=-=-=-=- Saved state -=-=-=-=-=- */ /** * Common worker for pciR3SaveExec and pcibridgeR3SaveExec. * * @returns VBox status code. * @param pBus The bus to save. * @param pSSM The saved state handle. */ static int pciR3CommonSaveExec(PPCIBUS pBus, PSSMHANDLE pSSM) { /* * Iterate thru all the devices. */ for (uint32_t i = 0; i < RT_ELEMENTS(pBus->devices); i++) { PPCIDEVICE pDev = pBus->devices[i]; if (pDev) { SSMR3PutU32(pSSM, i); SSMR3PutMem(pSSM, pDev->config, sizeof(pDev->config)); int rc = SSMR3PutS32(pSSM, pDev->Int.s.uIrqPinState); if (RT_FAILURE(rc)) return rc; } } return SSMR3PutU32(pSSM, UINT32_MAX); /* terminator */ } /** * @callback_method_impl{FNSSMDEVSAVEEXEC} */ static DECLCALLBACK(int) pciR3SaveExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM) { uint32_t i; PPCIGLOBALS pThis = PDMINS_2_DATA(pDevIns, PPCIGLOBALS); /* * Bus state data. */ SSMR3PutU32(pSSM, pThis->uConfigReg); SSMR3PutBool(pSSM, pThis->fUseIoApic); /* * Save IRQ states. */ for (i = 0; i < PCI_IRQ_PINS; i++) SSMR3PutU32(pSSM, pThis->pci_irq_levels[i]); for (i = 0; i < PCI_APIC_IRQ_PINS; i++) SSMR3PutU32(pSSM, pThis->pci_apic_irq_levels[i]); SSMR3PutU32(pSSM, pThis->acpi_irq_level); SSMR3PutS32(pSSM, pThis->acpi_irq); SSMR3PutU32(pSSM, ~0); /* separator */ /* * Join paths with pcibridgeR3SaveExec. */ return pciR3CommonSaveExec(&pThis->PciBus, pSSM); } /** * Common routine for restoring the config registers of a PCI device. * * @param pDev The PCI device. * @param pbSrcConfig The configuration register values to be loaded. * @param fIsBridge Whether this is a bridge device or not. */ static void pciR3CommonRestoreConfig(PPCIDEVICE pDev, uint8_t const *pbSrcConfig, bool fIsBridge) { /* * This table defines the fields for normal devices and bridge devices, and * the order in which they need to be restored. */ static const struct PciField { uint8_t off; uint8_t cb; uint8_t fWritable; uint8_t fBridge; const char *pszName; } s_aFields[] = { /* off,cb,fW,fB, pszName */ { 0x00, 2, 0, 3, "VENDOR_ID" }, { 0x02, 2, 0, 3, "DEVICE_ID" }, { 0x06, 2, 1, 3, "STATUS" }, { 0x08, 1, 0, 3, "REVISION_ID" }, { 0x09, 1, 0, 3, "CLASS_PROG" }, { 0x0a, 1, 0, 3, "CLASS_SUB" }, { 0x0b, 1, 0, 3, "CLASS_BASE" }, { 0x0c, 1, 1, 3, "CACHE_LINE_SIZE" }, { 0x0d, 1, 1, 3, "LATENCY_TIMER" }, { 0x0e, 1, 0, 3, "HEADER_TYPE" }, { 0x0f, 1, 1, 3, "BIST" }, { 0x10, 4, 1, 3, "BASE_ADDRESS_0" }, { 0x14, 4, 1, 3, "BASE_ADDRESS_1" }, { 0x18, 4, 1, 1, "BASE_ADDRESS_2" }, { 0x18, 1, 1, 2, "PRIMARY_BUS" }, // fWritable = ?? { 0x19, 1, 1, 2, "SECONDARY_BUS" }, // fWritable = ?? { 0x1a, 1, 1, 2, "SUBORDINATE_BUS" }, // fWritable = ?? { 0x1b, 1, 1, 2, "SEC_LATENCY_TIMER" }, // fWritable = ?? { 0x1c, 4, 1, 1, "BASE_ADDRESS_3" }, { 0x1c, 1, 1, 2, "IO_BASE" }, // fWritable = ?? { 0x1d, 1, 1, 2, "IO_LIMIT" }, // fWritable = ?? { 0x1e, 2, 1, 2, "SEC_STATUS" }, // fWritable = ?? { 0x20, 4, 1, 1, "BASE_ADDRESS_4" }, { 0x20, 2, 1, 2, "MEMORY_BASE" }, // fWritable = ?? { 0x22, 2, 1, 2, "MEMORY_LIMIT" }, // fWritable = ?? { 0x24, 4, 1, 1, "BASE_ADDRESS_5" }, { 0x24, 2, 1, 2, "PREF_MEMORY_BASE" }, // fWritable = ?? { 0x26, 2, 1, 2, "PREF_MEMORY_LIMIT" }, // fWritable = ?? { 0x28, 4, 1, 1, "CARDBUS_CIS" }, // fWritable = ?? { 0x28, 4, 1, 2, "PREF_BASE_UPPER32" }, // fWritable = ?? { 0x2c, 2, 0, 1, "SUBSYSTEM_VENDOR_ID" },// fWritable = !? { 0x2c, 4, 1, 2, "PREF_LIMIT_UPPER32" },// fWritable = ?? { 0x2e, 2, 0, 1, "SUBSYSTEM_ID" }, // fWritable = !? { 0x30, 4, 1, 1, "ROM_ADDRESS" }, // fWritable = ?! { 0x30, 2, 1, 2, "IO_BASE_UPPER16" }, // fWritable = ?! { 0x32, 2, 1, 2, "IO_LIMIT_UPPER16" }, // fWritable = ?! { 0x34, 4, 0, 3, "CAPABILITY_LIST" }, // fWritable = !? cb=!? { 0x38, 4, 1, 1, "RESERVED_38" }, // ??? { 0x38, 4, 1, 2, "ROM_ADDRESS_BR" }, // fWritable = !? cb=!? fBridge=!? { 0x3c, 1, 1, 3, "INTERRUPT_LINE" }, // fBridge=?? { 0x3d, 1, 0, 3, "INTERRUPT_PIN" }, // fBridge=?? { 0x3e, 1, 0, 1, "MIN_GNT" }, { 0x3e, 2, 1, 2, "BRIDGE_CONTROL" }, // fWritable = !? { 0x3f, 1, 0, 1, "MAX_LAT" }, /* The COMMAND register must come last as it requires the *ADDRESS* registers to be restored before we pretent to change it from 0 to whatever value the guest assigned it. */ { 0x04, 2, 1, 3, "COMMAND" }, }; #ifdef RT_STRICT /* Check that we've got full register coverage. */ uint32_t bmDevice[0x40 / 32]; uint32_t bmBridge[0x40 / 32]; RT_ZERO(bmDevice); RT_ZERO(bmBridge); for (uint32_t i = 0; i < RT_ELEMENTS(s_aFields); i++) { uint8_t off = s_aFields[i].off; uint8_t cb = s_aFields[i].cb; uint8_t f = s_aFields[i].fBridge; while (cb-- > 0) { if (f & 1) AssertMsg(!ASMBitTest(bmDevice, off), ("%#x\n", off)); if (f & 2) AssertMsg(!ASMBitTest(bmBridge, off), ("%#x\n", off)); if (f & 1) ASMBitSet(bmDevice, off); if (f & 2) ASMBitSet(bmBridge, off); off++; } } for (uint32_t off = 0; off < 0x40; off++) { AssertMsg(ASMBitTest(bmDevice, off), ("%#x\n", off)); AssertMsg(ASMBitTest(bmBridge, off), ("%#x\n", off)); } #endif /* * Loop thru the fields covering the 64 bytes of standard registers. */ uint8_t const fBridge = fIsBridge ? 2 : 1; uint8_t *pbDstConfig = &pDev->config[0]; for (uint32_t i = 0; i < RT_ELEMENTS(s_aFields); i++) if (s_aFields[i].fBridge & fBridge) { uint8_t const off = s_aFields[i].off; uint8_t const cb = s_aFields[i].cb; uint32_t u32Src; uint32_t u32Dst; switch (cb) { case 1: u32Src = pbSrcConfig[off]; u32Dst = pbDstConfig[off]; break; case 2: u32Src = *(uint16_t const *)&pbSrcConfig[off]; u32Dst = *(uint16_t const *)&pbDstConfig[off]; break; case 4: u32Src = *(uint32_t const *)&pbSrcConfig[off]; u32Dst = *(uint32_t const *)&pbDstConfig[off]; break; default: AssertFailed(); continue; } if ( u32Src != u32Dst || off == VBOX_PCI_COMMAND) { if (u32Src != u32Dst) { if (!s_aFields[i].fWritable) LogRel(("PCI: %8s/%u: %2u-bit field %s: %x -> %x - !READ ONLY!\n", pDev->name, pDev->pDevIns->iInstance, cb*8, s_aFields[i].pszName, u32Dst, u32Src)); else LogRel(("PCI: %8s/%u: %2u-bit field %s: %x -> %x\n", pDev->name, pDev->pDevIns->iInstance, cb*8, s_aFields[i].pszName, u32Dst, u32Src)); } if (off == VBOX_PCI_COMMAND) PCIDevSetCommand(pDev, 0); /* For remapping, see pciR3CommonLoadExec. */ pDev->Int.s.pfnConfigWrite(pDev, off, u32Src, cb); } } /* * The device dependent registers. * * We will not use ConfigWrite here as we have no clue about the size * of the registers, so the device is responsible for correctly * restoring functionality governed by these registers. */ for (uint32_t off = 0x40; off < sizeof(pDev->config); off++) if (pbDstConfig[off] != pbSrcConfig[off]) { LogRel(("PCI: %8s/%u: register %02x: %02x -> %02x\n", pDev->name, pDev->pDevIns->iInstance, off, pbDstConfig[off], pbSrcConfig[off])); /** @todo make this Log() later. */ pbDstConfig[off] = pbSrcConfig[off]; } } /** * Common worker for pciR3LoadExec and pcibridgeR3LoadExec. * * @returns VBox status code. * @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 DECLCALLBACK(int) pciR3CommonLoadExec(PPCIBUS pBus, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass) { uint32_t u32; uint32_t i; 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 pciR3CommonRestoreConfig. */ for (i = 0; i < RT_ELEMENTS(pBus->devices); i++) { PPCIDEVICE pDev = pBus->devices[i]; if (pDev) { uint16_t u16 = PCIDevGetCommand(pDev); pDev->Int.s.pfnConfigWrite(pDev, VBOX_PCI_COMMAND, 0, 2); PCIDevSetCommand(pDev, u16); Assert(PCIDevGetCommand(pDev) == u16); } } /* * Iterate all the devices. */ for (i = 0;; i++) { PCIDEVICE DevTmp; PPCIDEVICE pDev; /* index / terminator */ rc = SSMR3GetU32(pSSM, &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(pSSM) != SSMAFTER_DEBUG_IT) return SSMR3SetCfgError(pSSM, RT_SRC_POS, N_("New device in slot %#x, %s (vendor=%#06x device=%#06x)"), i, pBus->devices[i]->name, PCIDevGetVendorId(pBus->devices[i]), PCIDevGetDeviceId(pBus->devices[i])); } } /* 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(pSSM, DevTmp.config, sizeof(DevTmp.config)); if (uVersion < 3) { int32_t i32Temp; /* Irq value not needed anymore. */ rc = SSMR3GetS32(pSSM, &i32Temp); if (RT_FAILURE(rc)) return rc; } else { rc = SSMR3GetS32(pSSM, &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(pSSM) != SSMAFTER_DEBUG_IT) return SSMR3SetCfgError(pSSM, RT_SRC_POS, N_("Device in slot %#x has been removed! vendor=%#06x device=%#06x"), i, PCIDevGetVendorId(&DevTmp), PCIDevGetDeviceId(&DevTmp)); 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]) return SSMR3SetCfgError(pSSM, RT_SRC_POS, N_("Device in slot %#x (%s) vendor id mismatch! saved=%.4Rhxs current=%.4Rhxs"), i, pDev->name, DevTmp.config, pDev->config); /* commit the loaded device config. */ pciR3CommonRestoreConfig(pDev, &DevTmp.config[0], false ); /** @todo fix bridge fun! */ pDev->Int.s.uIrqPinState = 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) { PPCIGLOBALS pThis = PDMINS_2_DATA(pDevIns, PPCIGLOBALS); PPCIBUS pBus = &pThis->PciBus; 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. */ SSMR3GetU32(pSSM, &pThis->uConfigReg); if (uVersion > 1) SSMR3GetBool(pSSM, &pThis->fUseIoApic); /* Load IRQ states. */ if (uVersion > 2) { for (uint8_t i = 0; i < PCI_IRQ_PINS; i++) SSMR3GetU32(pSSM, (uint32_t *)&pThis->pci_irq_levels[i]); for (uint8_t i = 0; i < PCI_APIC_IRQ_PINS; i++) SSMR3GetU32(pSSM, (uint32_t *)&pThis->pci_apic_irq_levels[i]); SSMR3GetU32(pSSM, &pThis->acpi_irq_level); SSMR3GetS32(pSSM, &pThis->acpi_irq); } /* separator */ rc = SSMR3GetU32(pSSM, &u32); if (RT_FAILURE(rc)) return rc; if (u32 != (uint32_t)~0) AssertMsgFailedReturn(("u32=%#x\n", u32), rc); /* * The devices. */ return pciR3CommonLoadExec(pBus, pSSM, uVersion, uPass); } /* -=-=-=-=-=- PCI Bus Interface Methods (PDMPCIBUSREG) -=-=-=-=-=- */ /** * 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 pciR3RegisterDeviceInternal(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; /* 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; 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; } } pciDevClearRequestedDevfunc(pPciDev); } 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 ( pciDevIsRequestedDevfunc(pBus->devices[iDev]) || (pBus->devices[iDev + 1] && pciDevIsRequestedDevfunc(pBus->devices[iDev + 1])) || (pBus->devices[iDev + 2] && pciDevIsRequestedDevfunc(pBus->devices[iDev + 2])) || (pBus->devices[iDev + 3] && pciDevIsRequestedDevfunc(pBus->devices[iDev + 3])) || (pBus->devices[iDev + 4] && pciDevIsRequestedDevfunc(pBus->devices[iDev + 4])) || (pBus->devices[iDev + 5] && pciDevIsRequestedDevfunc(pBus->devices[iDev + 5])) || (pBus->devices[iDev + 6] && pciDevIsRequestedDevfunc(pBus->devices[iDev + 6])) || (pBus->devices[iDev + 7] && pciDevIsRequestedDevfunc(pBus->devices[iDev + 7]))) { 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 = iDevRel + 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 */ pciDevSetRequestedDevfunc(pPciDev); } 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 (pciDevIsPci2PciBridge(pPciDev)) { 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; } /** * @interface_method_impl{PDMPCIBUSREG,pfnRegister} */ static DECLCALLBACK(int) pciR3Register(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 pciR3RegisterDeviceInternal(pBus, iDev, pPciDev, pszName); } /** * @interface_method_impl{PDMPCIBUSREG,pfnIORegionRegisterR3} */ static DECLCALLBACK(int) pciR3CommonIORegionRegister(PPDMDEVINS pDevIns, PPCIDEVICE pPciDev, int iRegion, uint32_t cbRegion, PCIADDRESSSPACE enmType, PFNPCIIOREGIONMAP pfnCallback) { NOREF(pDevIns); /* * 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; } /** * @interface_method_impl{PDMPCIBUSREG,pfnSetConfigCallbacksR3} */ static DECLCALLBACK(void) pciR3CommonSetConfigCallbacks(PPDMDEVINS pDevIns, PPCIDEVICE pPciDev, PFNPCICONFIGREAD pfnRead, PPFNPCICONFIGREAD ppfnReadOld, PFNPCICONFIGWRITE pfnWrite, PPFNPCICONFIGWRITE ppfnWriteOld) { NOREF(pDevIns); if (ppfnReadOld) *ppfnReadOld = pPciDev->Int.s.pfnConfigRead; pPciDev->Int.s.pfnConfigRead = pfnRead; if (ppfnWriteOld) *ppfnWriteOld = pPciDev->Int.s.pfnConfigWrite; pPciDev->Int.s.pfnConfigWrite = pfnWrite; } /** * @interface_method_impl{PDMPCIBUSREG,pfnFakePCIBIOSR3} */ static DECLCALLBACK(int) pciR3FakePCIBIOS(PPDMDEVINS pDevIns) { 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 = 0xd000; 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. */ VBOXSTRICTRC rcStrict = IOMIOPortWrite(pVM, 0x4d0, elcr[0], sizeof(uint8_t)); if (rcStrict == VINF_SUCCESS) rcStrict = IOMIOPortWrite(pVM, 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. */ 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; } /* -=-=-=-=-=- Debug Info Handlers -=-=-=-=-=- */ /** * @callback_method_impl{FNDBGFHANDLERDEV} */ static DECLCALLBACK(void) pciR3IrqInfo(PPDMDEVINS pDevIns, PCDBGFINFOHLP pHlp, const char *pszArgs) { PPCIGLOBALS pGlobals = PDMINS_2_DATA(pDevIns, PPCIGLOBALS); NOREF(pszArgs); uint16_t router = pGlobals->PIIX3State.dev.devfn; 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 = pci_config_readb(pGlobals, 0, router, 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); } } /** * Outputs indent. * * @param pHlp Output helpers. * @param iIndent Indentation level. */ static void pciR3PrintIndent(PCDBGFINFOHLP pHlp, int iIndent) { while (iIndent-- > 0) pHlp->pfnPrintf(pHlp, " "); } /** * Recursive worker for pciR3Info. * * @param pBus The bus to display. * @param pHlp Output helpers. * @param iIndent Indentation level. * @param fRegisters Whether to also display the PCI configuration registers * of each device on the bus. */ static void pciR3BusInfo(PPCIBUS pBus, PCDBGFINFOHLP pHlp, int iIndent, bool fRegisters) { for (uint32_t iDev = 0; iDev < RT_ELEMENTS(pBus->devices); iDev++) { PPCIDEVICE pPciDev = pBus->devices[iDev]; if (pPciDev != NULL) { pciR3PrintIndent(pHlp, iIndent); /* * For passthrough devices MSI/MSI-X mostly reflects the way interrupts delivered to the guest, * as host driver handles real devices interrupts. */ pHlp->pfnPrintf(pHlp, "%02x:%02x:%02x %s%s: %04x-%04x%s%s", pBus->iBus, (iDev >> 3) & 0xff, iDev & 0x7, pPciDev->name, pciDevIsPassthrough(pPciDev) ? " (PASSTHROUGH)" : "", PCIDevGetWord(pPciDev, VBOX_PCI_VENDOR_ID), PCIDevGetWord(pPciDev, VBOX_PCI_DEVICE_ID), pciDevIsMsiCapable(pPciDev) ? " MSI" : "", pciDevIsMsixCapable(pPciDev) ? " MSI-X" : "" ); if (PCIDevGetByte(pPciDev, VBOX_PCI_INTERRUPT_PIN) != 0) pHlp->pfnPrintf(pHlp, " IRQ%d", PCIDevGetByte(pPciDev, VBOX_PCI_INTERRUPT_LINE)); pHlp->pfnPrintf(pHlp, "\n"); uint16_t iCmd = PCIDevGetWord(pPciDev, VBOX_PCI_COMMAND); if ((iCmd & (VBOX_PCI_COMMAND_IO | VBOX_PCI_COMMAND_MEMORY)) != 0) { for (int iRegion = 0; iRegion < PCI_NUM_REGIONS; iRegion++) { PCIIORegion* pRegion = &pPciDev->Int.s.aIORegions[iRegion]; uint64_t iRegionSize = pRegion->size; if (iRegionSize == 0) continue; uint32_t u32Addr = PCIDevGetDWord(pPciDev, PCIDevGetRegionReg(iRegion)); const char * pszDesc; char szDescBuf[128]; bool f64Bit = !!(pRegion->type & PCI_ADDRESS_SPACE_BAR64); if (pRegion->type & PCI_ADDRESS_SPACE_IO) { pszDesc = "IO"; u32Addr &= ~0x3; } else { RTStrPrintf(szDescBuf, sizeof(szDescBuf), "MMIO%s%s", f64Bit ? "64" : "32", (pRegion->type & PCI_ADDRESS_SPACE_MEM_PREFETCH) ? " PREFETCH" : ""); pszDesc = szDescBuf; u32Addr &= ~0xf; } pciR3PrintIndent(pHlp, iIndent + 2); pHlp->pfnPrintf(pHlp, "%s region #%d: %x..%x\n", pszDesc, iRegion, u32Addr, u32Addr+iRegionSize); if (f64Bit) iRegion++; } } pciR3PrintIndent(pHlp, iIndent + 2); uint16_t iStatus = PCIDevGetWord(pPciDev, VBOX_PCI_STATUS); pHlp->pfnPrintf(pHlp, "Command: %.*Rhxs, Status: %.*Rhxs\n", sizeof(uint16_t), &iCmd, sizeof(uint16_t), &iStatus); pciR3PrintIndent(pHlp, iIndent + 2); pHlp->pfnPrintf(pHlp, "Bus master: %s\n", iCmd & VBOX_PCI_COMMAND_MASTER ? "Yes" : "No"); if (fRegisters) { pciR3PrintIndent(pHlp, iIndent + 2); pHlp->pfnPrintf(pHlp, "PCI registers:\n"); for (int iReg = 0; iReg < 0x100; ) { int iPerLine = 0x10; Assert (0x100 % iPerLine == 0); pciR3PrintIndent(pHlp, iIndent + 3); while (iPerLine-- > 0) { pHlp->pfnPrintf(pHlp, "%02x ", PCIDevGetByte(pPciDev, iReg++)); } pHlp->pfnPrintf(pHlp, "\n"); } } } } if (pBus->cBridges > 0) { pciR3PrintIndent(pHlp, iIndent); pHlp->pfnPrintf(pHlp, "Registered %d bridges, subordinate buses info follows\n", pBus->cBridges); for (uint32_t iBridge = 0; iBridge < pBus->cBridges; iBridge++) { PPCIBUS pBusSub = PDMINS_2_DATA(pBus->papBridgesR3[iBridge]->pDevIns, PPCIBUS); pciR3BusInfo(pBusSub, pHlp, iIndent + 1, fRegisters); } } } /** * @callback_method_impl{FNDBGFHANDLERDEV} */ static DECLCALLBACK(void) pciR3Info(PPDMDEVINS pDevIns, PCDBGFINFOHLP pHlp, const char *pszArgs) { PPCIBUS pBus = DEVINS_2_PCIBUS(pDevIns); if (pszArgs == NULL || !*pszArgs || !strcmp(pszArgs, "basic")) pciR3BusInfo(pBus, pHlp, 0, false); else if (!strcmp(pszArgs, "verbose")) pciR3BusInfo(pBus, pHlp, 0, true); else pHlp->pfnPrintf(pHlp, "Invalid argument. Recognized arguments are 'basic', 'verbose'.\n"); } /* -=-=-=-=-=- PDMDEVREG -=-=-=-=-=- */ /** * @interface_method_impl{PDMDEVREG,pfnRelocate} */ static DECLCALLBACK(void) pciR3Relocate(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; } } /** * @interface_method_impl{PDMDEVREG,pfnReset} */ static DECLCALLBACK(void) pciR3Reset(PPDMDEVINS pDevIns) { pciR3FakePCIBIOS(pDevIns); } /** * @interface_method_impl{PDMDEVREG,pfnConstruct} */ static DECLCALLBACK(int) pciR3Construct(PPDMDEVINS pDevIns, int iInstance, PCFGMNODE pCfg) { Assert(iInstance == 0); PDMDEV_CHECK_VERSIONS_RETURN(pDevIns); /* * Validate and read configuration. */ if (!CFGMR3AreValuesValid(pCfg, "IOAPIC\0" "GCEnabled\0" "R0Enabled\0")) return VERR_PDM_DEVINS_UNKNOWN_CFG_VALUES; /* query whether we got an IOAPIC */ bool fUseIoApic; int rc = CFGMR3QueryBoolDef(pCfg, "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(pCfg, "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(pCfg, "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 = pciR3Register; PciBusReg.pfnRegisterMsiR3 = NULL; PciBusReg.pfnIORegionRegisterR3 = pciR3CommonIORegionRegister; PciBusReg.pfnSetConfigCallbacksR3 = pciR3CommonSetConfigCallbacks; PciBusReg.pfnSetIrqR3 = pciSetIrq; PciBusReg.pfnFakePCIBIOSR3 = pciR3FakePCIBIOS; PciBusReg.pszSetIrqRC = fGCEnabled ? "pciSetIrq" : NULL; PciBusReg.pszSetIrqR0 = fR0Enabled ? "pciSetIrq" : NULL; rc = PDMDevHlpPCIBusRegister(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); /* Disable default device locking. */ rc = PDMDevHlpSetDeviceCritSect(pDevIns, PDMDevHlpCritSectGetNop(pDevIns)); AssertRCReturn(rc, rc); /* * 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; pciDevSetRequestedDevfunc(&pBus->PciDev); pciR3RegisterDeviceInternal(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; pciDevSetRequestedDevfunc(&pGlobals->PIIX3State.dev); pciR3RegisterDeviceInternal(pBus, 8, &pGlobals->PIIX3State.dev, "PIIX3"); pciR3Piix3Reset(&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 = PDMDevHlpIOPortRegisterRC(pDevIns, 0x0cf8, 1, NIL_RTGCPTR, "pciIOPortAddressWrite", "pciIOPortAddressRead", NULL, NULL, "i440FX (PCI)"); if (RT_FAILURE(rc)) return rc; rc = PDMDevHlpIOPortRegisterRC(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 = PDMDevHlpSSMRegisterEx(pDevIns, VBOX_PCI_SAVED_STATE_VERSION, sizeof(*pBus) + 16*128, "pgm", NULL, NULL, NULL, NULL, pciR3SaveExec, NULL, NULL, pciR3LoadExec, NULL); if (RT_FAILURE(rc)) return rc; PDMDevHlpDBGFInfoRegister(pDevIns, "pci", "Display PCI bus status. Recognizes 'basic' or 'verbose' as arguments, defaults to 'basic'.", pciR3Info); PDMDevHlpDBGFInfoRegister(pDevIns, "pciirq", "Display PCI IRQ routing state. (no arguments)", pciR3IrqInfo); return VINF_SUCCESS; } /** * The device registration structure. */ const PDMDEVREG g_DevicePCI = { /* u32Version */ PDM_DEVREG_VERSION, /* szName */ "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 */ pciR3Construct, /* pfnDestruct */ NULL, /* pfnRelocate */ pciR3Relocate, /* pfnMemSetup */ NULL, /* pfnPowerOn */ NULL, /* pfnReset */ pciR3Reset, /* pfnSuspend */ NULL, /* pfnResume */ NULL, /* pfnAttach */ NULL, /* pfnDetach */ NULL, /* pfnQueryInterface */ NULL, /* pfnInitComplete */ NULL, /* pfnPowerOff */ NULL, /* pfnSoftReset */ NULL, /* u32VersionEnd */ PDM_DEVREG_VERSION }; #endif /* IN_RING3 */ /* -=-=-=-=-=- The PCI bridge specific bits -=-=-=-=-=- */ /** * @interface_method_impl{PDMPCIBUSREG,pfnSetIrq} */ PDMBOTHCBDECL(void) pcibridgeSetIrq(PPDMDEVINS pDevIns, PPCIDEVICE pPciDev, int iIrq, int iLevel, uint32_t 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. */ PPCIBUS pBus = PDMINS_2_DATA(pDevIns, PPCIBUS); PPCIDEVICE pPciDevBus = pPciDev; int iIrqPinBridge = iIrq; uint8_t uDevFnBridge = 0; /* Walk the chain until we reach the host bus. */ do { uDevFnBridge = pBus->PciDev.devfn; iIrqPinBridge = ((pPciDevBus->devfn >> 3) + iIrqPinBridge) & 3; /* Get the parent. */ pBus = pBus->PciDev.Int.s.CTX_SUFF(pBus); pPciDevBus = &pBus->PciDev; } while (pBus->iBus != 0); 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, uTagSrc); } #ifdef IN_RING3 /** * @callback_method_impl{FNPCIBRIDGECONFIGWRITE} */ static void pcibridgeR3ConfigWrite(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 = pciR3FindBridge(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); } } } /** * @callback_method_impl{FNPCIBRIDGECONFIGREAD} */ static uint32_t pcibridgeR3ConfigRead(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 = pciR3FindBridge(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; } /** * @callback_method_impl{FNSSMDEVSAVEEXEC} */ static DECLCALLBACK(int) pcibridgeR3SaveExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM) { PPCIBUS pThis = PDMINS_2_DATA(pDevIns, PPCIBUS); return pciR3CommonSaveExec(pThis, pSSM); } /** * @callback_method_impl{FNSSMDEVLOADEXEC} */ static DECLCALLBACK(int) pcibridgeR3LoadExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass) { PPCIBUS pThis = PDMINS_2_DATA(pDevIns, PPCIBUS); if (uVersion > VBOX_PCI_SAVED_STATE_VERSION) return VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION; return pciR3CommonLoadExec(pThis, pSSM, uVersion, uPass); } /** * @interface_method_impl{PDMPCIBUSREG,pfnRegister} */ static DECLCALLBACK(int) pcibridgeR3RegisterDevice(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 pciR3RegisterDeviceInternal(pBus, iDev, pPciDev, pszName); } /** * @interface_method_impl{PDMDEVREG, pfnReset} */ static DECLCALLBACK(void) pcibridgeR3Reset(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; } /** * @interface_method_impl{PDMDEVREG, pfnRelocate} */ static DECLCALLBACK(void) pcibridgeR3Relocate(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; } } /** * @interface_method_impl{PDMDEVREG,pfnConstruct} */ static DECLCALLBACK(int) pcibridgeR3Construct(PPDMDEVINS pDevIns, int iInstance, PCFGMNODE pCfg) { PDMDEV_CHECK_VERSIONS_RETURN(pDevIns); /* * Validate and read configuration. */ if (!CFGMR3AreValuesValid(pCfg, "GCEnabled\0" "R0Enabled\0")) return VERR_PDM_DEVINS_UNKNOWN_CFG_VALUES; /* check if RC code is enabled. */ bool fGCEnabled; int rc = CFGMR3QueryBoolDef(pCfg, "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(pCfg, "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 = pcibridgeR3RegisterDevice; PciBusReg.pfnRegisterMsiR3 = NULL; PciBusReg.pfnIORegionRegisterR3 = pciR3CommonIORegionRegister; PciBusReg.pfnSetConfigCallbacksR3 = pciR3CommonSetConfigCallbacks; PciBusReg.pfnSetIrqR3 = pcibridgeSetIrq; PciBusReg.pfnFakePCIBIOSR3 = NULL; /* Only needed for the first bus. */ PciBusReg.pszSetIrqRC = fGCEnabled ? "pcibridgeSetIrq" : NULL; PciBusReg.pszSetIrqR0 = fR0Enabled ? "pcibridgeSetIrq" : NULL; rc = PDMDevHlpPCIBusRegister(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; /* Bridge-specific data */ pciDevSetPci2PciBridge(&pBus->PciDev); pBus->PciDev.Int.s.pfnBridgeConfigRead = pcibridgeR3ConfigRead; pBus->PciDev.Int.s.pfnBridgeConfigWrite = pcibridgeR3ConfigWrite; /* * 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. * That's why 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 = 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; } /** * The device registration structure * for the PCI-to-PCI bridge. */ const PDMDEVREG g_DevicePCIBridge = { /* u32Version */ PDM_DEVREG_VERSION, /* szName */ "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 */ ~0U, /* cbInstance */ sizeof(PCIBUS), /* pfnConstruct */ pcibridgeR3Construct, /* pfnDestruct */ NULL, /* pfnRelocate */ pcibridgeR3Relocate, /* pfnMemSetup */ NULL, /* pfnPowerOn */ NULL, /* pfnReset */ pcibridgeR3Reset, /* 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 */