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qemu/hw/pc.h
Avi Kivity ae0a54664c 440fx: fix PAM, PCI holes 
The current implementation of PAM and the PCI holes is broken in several
ways:

  - PCI BARs are not restricted to the PCI hole (a BAR may hide memory)
  - PCI devices do not respect PAM (if a PCI device maps a region while
    PAM maps the region to RAM, the request will be honored)

This patch fixes things by introducing a pci address space, and using
memory region aliases to represent PAM regions, SMRAM, and PCI holes.

The memory hierarchy looks something like

system_memory
 |
 +--- low memory alias (0-0xe0000000)
 |      |
 |      +-- ram@0
 |
 +--- high memory alias (0x100000000-EOM)
 |      |
 |      +-- ram@0xe0000000
 |
 +--- pci hole alias (end of low memory-0x100000000)
 |      |
 |      +-- pci@end-of-low-memory
 |
 |
 +--- pam[n] (0xc0000-0xc3fff etc) (when set to pci, priority 1)
 |      |
 |      +-- pci@0xc4000 etc
 |
 +--- smram (0xa0000-0xbffff) (when set to pci/vga, priority 1)
        |
        +-- pci@0xa0000 etc

ram (simple ram region)

pci
 |
 +--- BARn
 |
 +--- VGA 0xa0000-0xbffff
 |
 +--- ROMs

Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-08-22 10:47:49 -05:00

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#ifndef HW_PC_H
#define HW_PC_H
#include "qemu-common.h"
#include "memory.h"
#include "ioport.h"
#include "isa.h"
#include "fdc.h"
#include "net.h"
#include "memory.h"
/* PC-style peripherals (also used by other machines). */
/* serial.c */
SerialState *serial_init(int base, qemu_irq irq, int baudbase,
CharDriverState *chr);
SerialState *serial_mm_init (target_phys_addr_t base, int it_shift,
qemu_irq irq, int baudbase,
CharDriverState *chr, int ioregister,
int be);
static inline bool serial_isa_init(int index, CharDriverState *chr)
{
ISADevice *dev;
dev = isa_try_create("isa-serial");
if (!dev) {
return false;
}
qdev_prop_set_uint32(&dev->qdev, "index", index);
qdev_prop_set_chr(&dev->qdev, "chardev", chr);
if (qdev_init(&dev->qdev) < 0) {
return false;
}
return true;
}
void serial_set_frequency(SerialState *s, uint32_t frequency);
/* parallel.c */
static inline bool parallel_init(int index, CharDriverState *chr)
{
ISADevice *dev;
dev = isa_try_create("isa-parallel");
if (!dev) {
return false;
}
qdev_prop_set_uint32(&dev->qdev, "index", index);
qdev_prop_set_chr(&dev->qdev, "chardev", chr);
if (qdev_init(&dev->qdev) < 0) {
return false;
}
return true;
}
bool parallel_mm_init(target_phys_addr_t base, int it_shift, qemu_irq irq,
CharDriverState *chr);
/* i8259.c */
typedef struct PicState2 PicState2;
extern PicState2 *isa_pic;
void pic_set_irq(int irq, int level);
void pic_set_irq_new(void *opaque, int irq, int level);
qemu_irq *i8259_init(qemu_irq parent_irq);
int pic_read_irq(PicState2 *s);
void pic_update_irq(PicState2 *s);
uint32_t pic_intack_read(PicState2 *s);
void pic_info(Monitor *mon);
void irq_info(Monitor *mon);
/* ISA */
#define IOAPIC_NUM_PINS 0x18
typedef struct isa_irq_state {
qemu_irq *i8259;
qemu_irq ioapic[IOAPIC_NUM_PINS];
} IsaIrqState;
void isa_irq_handler(void *opaque, int n, int level);
/* i8254.c */
#define PIT_FREQ 1193182
static inline ISADevice *pit_init(int base, int irq)
{
ISADevice *dev;
dev = isa_create("isa-pit");
qdev_prop_set_uint32(&dev->qdev, "iobase", base);
qdev_prop_set_uint32(&dev->qdev, "irq", irq);
qdev_init_nofail(&dev->qdev);
return dev;
}
void pit_set_gate(ISADevice *dev, int channel, int val);
int pit_get_gate(ISADevice *dev, int channel);
int pit_get_initial_count(ISADevice *dev, int channel);
int pit_get_mode(ISADevice *dev, int channel);
int pit_get_out(ISADevice *dev, int channel, int64_t current_time);
void hpet_pit_disable(void);
void hpet_pit_enable(void);
/* vmport.c */
static inline void vmport_init(void)
{
isa_create_simple("vmport");
}
void vmport_register(unsigned char command, IOPortReadFunc *func, void *opaque);
void vmmouse_get_data(uint32_t *data);
void vmmouse_set_data(const uint32_t *data);
/* pckbd.c */
void i8042_init(qemu_irq kbd_irq, qemu_irq mouse_irq, uint32_t io_base);
void i8042_mm_init(qemu_irq kbd_irq, qemu_irq mouse_irq,
target_phys_addr_t base, ram_addr_t size,
target_phys_addr_t mask);
void i8042_isa_mouse_fake_event(void *opaque);
void i8042_setup_a20_line(ISADevice *dev, qemu_irq *a20_out);
/* pc.c */
extern int fd_bootchk;
void pc_register_ferr_irq(qemu_irq irq);
void pc_cmos_set_s3_resume(void *opaque, int irq, int level);
void pc_acpi_smi_interrupt(void *opaque, int irq, int level);
void pc_cpus_init(const char *cpu_model);
void pc_memory_init(MemoryRegion *system_memory,
const char *kernel_filename,
const char *kernel_cmdline,
const char *initrd_filename,
ram_addr_t below_4g_mem_size,
ram_addr_t above_4g_mem_size,
MemoryRegion *pci_memory,
MemoryRegion **ram_memory);
qemu_irq *pc_allocate_cpu_irq(void);
void pc_vga_init(PCIBus *pci_bus);
void pc_basic_device_init(qemu_irq *isa_irq,
ISADevice **rtc_state,
bool no_vmport);
void pc_init_ne2k_isa(NICInfo *nd);
void pc_cmos_init(ram_addr_t ram_size, ram_addr_t above_4g_mem_size,
const char *boot_device,
BusState *ide0, BusState *ide1,
ISADevice *s);
void pc_pci_device_init(PCIBus *pci_bus);
typedef void (*cpu_set_smm_t)(int smm, void *arg);
void cpu_smm_register(cpu_set_smm_t callback, void *arg);
/* acpi.c */
extern int acpi_enabled;
extern char *acpi_tables;
extern size_t acpi_tables_len;
void acpi_bios_init(void);
int acpi_table_add(const char *table_desc);
/* acpi_piix.c */
i2c_bus *piix4_pm_init(PCIBus *bus, int devfn, uint32_t smb_io_base,
qemu_irq sci_irq, qemu_irq cmos_s3, qemu_irq smi_irq,
int kvm_enabled);
void piix4_smbus_register_device(SMBusDevice *dev, uint8_t addr);
/* hpet.c */
extern int no_hpet;
/* pcspk.c */
void pcspk_init(ISADevice *pit);
int pcspk_audio_init(qemu_irq *pic);
/* piix_pci.c */
struct PCII440FXState;
typedef struct PCII440FXState PCII440FXState;
PCIBus *i440fx_init(PCII440FXState **pi440fx_state, int *piix_devfn,
qemu_irq *pic,
MemoryRegion *address_space_mem,
MemoryRegion *address_space_io,
ram_addr_t ram_size,
target_phys_addr_t pci_hole_start,
target_phys_addr_t pci_hole_size,
target_phys_addr_t pci_hole64_start,
target_phys_addr_t pci_hole64_size,
MemoryRegion *pci_memory,
MemoryRegion *ram_memory);
/* piix4.c */
extern PCIDevice *piix4_dev;
int piix4_init(PCIBus *bus, int devfn);
/* vga.c */
enum vga_retrace_method {
VGA_RETRACE_DUMB,
VGA_RETRACE_PRECISE
};
extern enum vga_retrace_method vga_retrace_method;
static inline int isa_vga_init(void)
{
ISADevice *dev;
dev = isa_try_create("isa-vga");
if (!dev) {
fprintf(stderr, "Warning: isa-vga not available\n");
return 0;
}
qdev_init_nofail(&dev->qdev);
return 1;
}
int pci_vga_init(PCIBus *bus);
int isa_vga_mm_init(target_phys_addr_t vram_base,
target_phys_addr_t ctrl_base, int it_shift,
MemoryRegion *address_space);
/* cirrus_vga.c */
void pci_cirrus_vga_init(PCIBus *bus);
void isa_cirrus_vga_init(MemoryRegion *address_space);
/* ne2000.c */
static inline bool isa_ne2000_init(int base, int irq, NICInfo *nd)
{
ISADevice *dev;
qemu_check_nic_model(nd, "ne2k_isa");
dev = isa_try_create("ne2k_isa");
if (!dev) {
return false;
}
qdev_prop_set_uint32(&dev->qdev, "iobase", base);
qdev_prop_set_uint32(&dev->qdev, "irq", irq);
qdev_set_nic_properties(&dev->qdev, nd);
qdev_init_nofail(&dev->qdev);
return true;
}
/* e820 types */
#define E820_RAM 1
#define E820_RESERVED 2
#define E820_ACPI 3
#define E820_NVS 4
#define E820_UNUSABLE 5
int e820_add_entry(uint64_t, uint64_t, uint32_t);
#endif
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