qemu-patch-raspberry4/include/sysemu/sysemu.h
Paolo Bonzini ca6155c0f2 Merge tag 'patchew/20200219160953.13771-1-imammedo@redhat.com' of https://github.com/patchew-project/qemu into HEAD
This series removes ad hoc RAM allocation API (memory_region_allocate_system_memory)
and consolidates it around hostmem backend. It allows to

* resolve conflicts between global -mem-prealloc and hostmem's "policy" option,
  fixing premature allocation before binding policy is applied

* simplify complicated memory allocation routines which had to deal with 2 ways
  to allocate RAM.

* reuse hostmem backends of a choice for main RAM without adding extra CLI
  options to duplicate hostmem features.  A recent case was -mem-shared, to
  enable vhost-user on targets that don't support hostmem backends [1] (ex: s390)

* move RAM allocation from individual boards into generic machine code and
  provide them with prepared MemoryRegion.

* clean up deprecated NUMA features which were tied to the old API (see patches)
  - "numa: remove deprecated -mem-path fallback to anonymous RAM"
  - (POSTPONED, waiting on libvirt side) "forbid '-numa node,mem' for 5.0 and newer machine types"
  - (POSTPONED) "numa: remove deprecated implicit RAM distribution between nodes"

Introduce a new machine.memory-backend property and wrapper code that aliases
global -mem-path and -mem-alloc into automatically created hostmem backend
properties (provided memory-backend was not set explicitly given by user).
A bulk of trivial patches then follow to incrementally convert individual
boards to using machine.memory-backend provided MemoryRegion.

Board conversion typically involves:

* providing MachineClass::default_ram_size and MachineClass::default_ram_id
  so generic code could create default backend if user didn't explicitly provide
  memory-backend or -m options

* dropping memory_region_allocate_system_memory() call

* using convenience MachineState::ram MemoryRegion, which points to MemoryRegion
   allocated by ram-memdev

On top of that for some boards:

* missing ram_size checks are added (typically it were boards with fixed ram size)

* ram_size fixups are replaced by checks and hard errors, forcing user to
  provide correct "-m" values instead of ignoring it and continuing running.

After all boards are converted, the old API is removed and memory allocation
routines are cleaned up.
2020-02-25 09:19:00 +01:00

133 lines
3.9 KiB
C

#ifndef SYSEMU_H
#define SYSEMU_H
/* Misc. things related to the system emulator. */
#include "qemu/timer.h"
#include "qemu/notify.h"
#include "qemu/uuid.h"
#include "qom/object.h"
/* vl.c */
extern const char *bios_name;
extern int only_migratable;
extern const char *qemu_name;
extern QemuUUID qemu_uuid;
extern bool qemu_uuid_set;
void qemu_add_exit_notifier(Notifier *notify);
void qemu_remove_exit_notifier(Notifier *notify);
extern bool machine_init_done;
void qemu_add_machine_init_done_notifier(Notifier *notify);
void qemu_remove_machine_init_done_notifier(Notifier *notify);
extern int autostart;
typedef enum {
VGA_NONE, VGA_STD, VGA_CIRRUS, VGA_VMWARE, VGA_XENFB, VGA_QXL,
VGA_TCX, VGA_CG3, VGA_DEVICE, VGA_VIRTIO,
VGA_TYPE_MAX,
} VGAInterfaceType;
extern int vga_interface_type;
extern int graphic_width;
extern int graphic_height;
extern int graphic_depth;
extern int display_opengl;
extern const char *keyboard_layout;
extern int win2k_install_hack;
extern int alt_grab;
extern int ctrl_grab;
extern int graphic_rotate;
extern int no_shutdown;
extern int old_param;
extern int boot_menu;
extern bool boot_strict;
extern uint8_t *boot_splash_filedata;
extern bool enable_mlock;
extern bool enable_cpu_pm;
extern QEMUClockType rtc_clock;
#define MAX_OPTION_ROMS 16
typedef struct QEMUOptionRom {
const char *name;
int32_t bootindex;
} QEMUOptionRom;
extern QEMUOptionRom option_rom[MAX_OPTION_ROMS];
extern int nb_option_roms;
#define MAX_PROM_ENVS 128
extern const char *prom_envs[MAX_PROM_ENVS];
extern unsigned int nb_prom_envs;
/* generic hotplug */
void hmp_drive_add(Monitor *mon, const QDict *qdict);
/* pcie aer error injection */
void hmp_pcie_aer_inject_error(Monitor *mon, const QDict *qdict);
/* serial ports */
/* Return the Chardev for serial port i, or NULL if none */
Chardev *serial_hd(int i);
/* return the number of serial ports defined by the user. serial_hd(i)
* will always return NULL for any i which is greater than or equal to this.
*/
int serial_max_hds(void);
/* parallel ports */
#define MAX_PARALLEL_PORTS 3
extern Chardev *parallel_hds[MAX_PARALLEL_PORTS];
void hmp_info_usb(Monitor *mon, const QDict *qdict);
void add_boot_device_path(int32_t bootindex, DeviceState *dev,
const char *suffix);
char *get_boot_devices_list(size_t *size);
DeviceState *get_boot_device(uint32_t position);
void check_boot_index(int32_t bootindex, Error **errp);
void del_boot_device_path(DeviceState *dev, const char *suffix);
void device_add_bootindex_property(Object *obj, int32_t *bootindex,
const char *name, const char *suffix,
DeviceState *dev, Error **errp);
void restore_boot_order(void *opaque);
void validate_bootdevices(const char *devices, Error **errp);
void add_boot_device_lchs(DeviceState *dev, const char *suffix,
uint32_t lcyls, uint32_t lheads, uint32_t lsecs);
void del_boot_device_lchs(DeviceState *dev, const char *suffix);
char *get_boot_devices_lchs_list(size_t *size);
/* handler to set the boot_device order for a specific type of MachineClass */
typedef void QEMUBootSetHandler(void *opaque, const char *boot_order,
Error **errp);
void qemu_register_boot_set(QEMUBootSetHandler *func, void *opaque);
void qemu_boot_set(const char *boot_order, Error **errp);
QemuOpts *qemu_get_machine_opts(void);
bool defaults_enabled(void);
void qemu_init(int argc, char **argv, char **envp);
void qemu_main_loop(void);
void qemu_cleanup(void);
extern QemuOptsList qemu_legacy_drive_opts;
extern QemuOptsList qemu_common_drive_opts;
extern QemuOptsList qemu_drive_opts;
extern QemuOptsList bdrv_runtime_opts;
extern QemuOptsList qemu_chardev_opts;
extern QemuOptsList qemu_device_opts;
extern QemuOptsList qemu_netdev_opts;
extern QemuOptsList qemu_nic_opts;
extern QemuOptsList qemu_net_opts;
extern QemuOptsList qemu_global_opts;
extern QemuOptsList qemu_semihosting_config_opts;
#endif