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/*
* QEMU PIIX South Bridge Emulation
*
* Copyright (c) 2006 Fabrice Bellard
* Copyright (c) 2018 Hervé Poussineau
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*
*/
#ifndef HW_SOUTHBRIDGE_PIIX_H
#define HW_SOUTHBRIDGE_PIIX_H
#include "hw/pci/pci.h"
#include "qom/object.h"
#define TYPE_PIIX4_PM "PIIX4_PM"
I2CBus *piix4_pm_init(PCIBus *bus, int devfn, uint32_t smb_io_base,
qemu_irq sci_irq, qemu_irq smi_irq,
int smm_enabled, DeviceState **piix4_pm);
/* PIRQRC[A:D]: PIRQx Route Control Registers */
#define PIIX_PIRQCA 0x60
#define PIIX_PIRQCB 0x61
#define PIIX_PIRQCC 0x62
#define PIIX_PIRQCD 0x63
/*
* Reset Control Register: PCI-accessible ISA-Compatible Register at address
* 0xcf9, provided by the PCI/ISA bridge (PIIX3 PCI function 0, 8086:7000).
*/
#define PIIX_RCR_IOPORT 0xcf9
#define PIIX_NUM_PIC_IRQS 16 /* i8259 * 2 */
#define PIIX_NUM_PIRQS 4ULL /* PIRQ[A-D] */
struct PIIXState {
PCIDevice dev;
/*
* bitmap to track pic levels.
* The pic level is the logical OR of all the PCI irqs mapped to it
* So one PIC level is tracked by PIIX_NUM_PIRQS bits.
*
* PIRQ is mapped to PIC pins, we track it by
* PIIX_NUM_PIRQS * PIIX_NUM_PIC_IRQS = 64 bits with
* pic_irq * PIIX_NUM_PIRQS + pirq
*/
#if PIIX_NUM_PIC_IRQS * PIIX_NUM_PIRQS > 64
#error "unable to encode pic state in 64bit in pic_levels."
#endif
uint64_t pic_levels;
qemu_irq *pic;
/* This member isn't used. Just for save/load compatibility */
int32_t pci_irq_levels_vmstate[PIIX_NUM_PIRQS];
/* Reset Control Register contents */
uint8_t rcr;
/* IO memory region for Reset Control Register (PIIX_RCR_IOPORT) */
MemoryRegion rcr_mem;
};
typedef struct PIIXState PIIX3State;
#define TYPE_PIIX3_PCI_DEVICE "pci-piix3"
DECLARE_INSTANCE_CHECKER(PIIX3State, PIIX3_PCI_DEVICE,
TYPE_PIIX3_PCI_DEVICE)
extern PCIDevice *piix4_dev;
PIIX3State *piix3_create(PCIBus *pci_bus, ISABus **isa_bus);
DeviceState *piix4_create(PCIBus *pci_bus, ISABus **isa_bus, I2CBus **smbus);
#endif
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