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pci: store PCI hole ranges in guestinfo structure 

Will be used to pass hole ranges to guests.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Michael S. Tsirkin 2013-05-30 12:57:26 +03:00
parent 620ac82eb0
commit 3459a62521
7 changed files with 92 additions and 4 deletions
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46
hw/i386/pc.c
View File

@ -989,6 +989,48 @@ void pc_cpus_init(const char *cpu_model, DeviceState *icc_bridge)
}
}
typedef struct PcGuestInfoState {
PcGuestInfo info;
Notifier machine_done;
} PcGuestInfoState;
static
void pc_guest_info_machine_done(Notifier *notifier, void *data)
{
PcGuestInfoState *guest_info_state = container_of(notifier,
PcGuestInfoState,
machine_done);
}
PcGuestInfo *pc_guest_info_init(ram_addr_t below_4g_mem_size,
ram_addr_t above_4g_mem_size)
{
PcGuestInfoState *guest_info_state = g_malloc0(sizeof *guest_info_state);
PcGuestInfo *guest_info = &guest_info_state->info;
guest_info->pci_info.w32.end = IO_APIC_DEFAULT_ADDRESS;
if (sizeof(hwaddr) == 4) {
guest_info->pci_info.w64.begin = 0;
guest_info->pci_info.w64.end = 0;
} else {
/*
* BIOS does not set MTRR entries for the 64 bit window, so no need to
* align address to power of two. Align address at 1G, this makes sure
* it can be exactly covered with a PAT entry even when using huge
* pages.
*/
guest_info->pci_info.w64.begin =
ROUND_UP((0x1ULL << 32) + above_4g_mem_size, 0x1ULL << 30);
guest_info->pci_info.w64.end = guest_info->pci_info.w64.begin +
(0x1ULL << 62);
assert(guest_info->pci_info.w64.begin <= guest_info->pci_info.w64.end);
}
guest_info_state->machine_done.notify = pc_guest_info_machine_done;
qemu_add_machine_init_done_notifier(&guest_info_state->machine_done);
return guest_info;
}
void pc_acpi_init(const char *default_dsdt)
{
char *filename;
@ -1030,7 +1072,8 @@ FWCfgState *pc_memory_init(MemoryRegion *system_memory,
ram_addr_t below_4g_mem_size,
ram_addr_t above_4g_mem_size,
MemoryRegion *rom_memory,
MemoryRegion **ram_memory)
MemoryRegion **ram_memory,
PcGuestInfo *guest_info)
{
int linux_boot, i;
MemoryRegion *ram, *option_rom_mr;
@ -1082,6 +1125,7 @@ FWCfgState *pc_memory_init(MemoryRegion *system_memory,
for (i = 0; i < nb_option_roms; i++) {
rom_add_option(option_rom[i].name, option_rom[i].bootindex);
}
guest_info->fw_cfg = fw_cfg;
return fw_cfg;
}

14
hw/i386/pc_piix.c
View File

@ -90,6 +90,7 @@ static void pc_init1(MemoryRegion *system_memory,
MemoryRegion *rom_memory;
DeviceState *icc_bridge;
FWCfgState *fw_cfg = NULL;
PcGuestInfo *guest_info;
if (xen_enabled() && xen_hvm_init() != 0) {
fprintf(stderr, "xen hardware virtual machine initialisation failed\n");
@ -124,12 +125,23 @@ static void pc_init1(MemoryRegion *system_memory,
rom_memory = system_memory;
}
guest_info = pc_guest_info_init(below_4g_mem_size, above_4g_mem_size);
/* Set PCI window size the way seabios has always done it. */
/* Power of 2 so bios can cover it with a single MTRR */
if (ram_size <= 0x80000000)
guest_info->pci_info.w32.begin = 0x80000000;
else if (ram_size <= 0xc0000000)
guest_info->pci_info.w32.begin = 0xc0000000;
else
guest_info->pci_info.w32.begin = 0xe0000000;
/* allocate ram and load rom/bios */
if (!xen_enabled()) {
fw_cfg = pc_memory_init(system_memory,
kernel_filename, kernel_cmdline, initrd_filename,
below_4g_mem_size, above_4g_mem_size,
rom_memory, &ram_memory);
rom_memory, &ram_memory, guest_info);
}
gsi_state = g_malloc0(sizeof(*gsi_state));

6
hw/i386/pc_q35.c
View File

@ -77,6 +77,7 @@ static void pc_q35_init(QEMUMachineInitArgs *args)
ICH9LPCState *ich9_lpc;
PCIDevice *ahci;
DeviceState *icc_bridge;
PcGuestInfo *guest_info;
icc_bridge = qdev_create(NULL, TYPE_ICC_BRIDGE);
object_property_add_child(qdev_get_machine(), "icc-bridge",
@ -105,11 +106,13 @@ static void pc_q35_init(QEMUMachineInitArgs *args)
rom_memory = get_system_memory();
}
guest_info = pc_guest_info_init(below_4g_mem_size, above_4g_mem_size);
/* allocate ram and load rom/bios */
if (!xen_enabled()) {
pc_memory_init(get_system_memory(), kernel_filename, kernel_cmdline,
initrd_filename, below_4g_mem_size, above_4g_mem_size,
rom_memory, &ram_memory);
rom_memory, &ram_memory, guest_info);
}
/* irq lines */
@ -131,6 +134,7 @@ static void pc_q35_init(QEMUMachineInitArgs *args)
q35_host->mch.address_space_io = get_system_io();
q35_host->mch.below_4g_mem_size = below_4g_mem_size;
q35_host->mch.above_4g_mem_size = above_4g_mem_size;
q35_host->mch.guest_info = guest_info;
/* pci */
qdev_init_nofail(DEVICE(q35_host));
host_bus = q35_host->host.pci.bus;

8
hw/pci-host/q35.c
View File

@ -244,6 +244,14 @@ static int mch_init(PCIDevice *d)
hwaddr pci_hole64_size;
MCHPCIState *mch = MCH_PCI_DEVICE(d);
/* Leave enough space for the biggest MCFG BAR */
/* TODO: this matches current bios behaviour, but
* it's not a power of two, which means an MTRR
* can't cover it exactly.
*/
mch->guest_info->pci_info.w32.begin = MCH_HOST_BRIDGE_PCIEXBAR_DEFAULT +
MCH_HOST_BRIDGE_PCIEXBAR_MAX;
/* setup pci memory regions */
memory_region_init_alias(&mch->pci_hole, "pci-hole",
mch->pci_address_space,

19
include/hw/i386/pc.h
View File

@ -9,8 +9,20 @@
#include "net/net.h"
#include "hw/i386/ioapic.h"
#include "qemu/range.h"
/* PC-style peripherals (also used by other machines). */
typedef struct PcPciInfo {
Range w32;
Range w64;
} PcPciInfo;
struct PcGuestInfo {
PcPciInfo pci_info;
FWCfgState *fw_cfg;
};
/* parallel.c */
static inline bool parallel_init(ISABus *bus, int index, CharDriverState *chr)
{
@ -82,6 +94,10 @@ void pc_acpi_smi_interrupt(void *opaque, int irq, int level);
void pc_cpus_init(const char *cpu_model, DeviceState *icc_bridge);
void pc_hot_add_cpu(const int64_t id, Error **errp);
void pc_acpi_init(const char *default_dsdt);
PcGuestInfo *pc_guest_info_init(ram_addr_t below_4g_mem_size,
ram_addr_t above_4g_mem_size);
FWCfgState *pc_memory_init(MemoryRegion *system_memory,
const char *kernel_filename,
const char *kernel_cmdline,
@ -89,7 +105,8 @@ FWCfgState *pc_memory_init(MemoryRegion *system_memory,
ram_addr_t below_4g_mem_size,
ram_addr_t above_4g_mem_size,
MemoryRegion *rom_memory,
MemoryRegion **ram_memory);
MemoryRegion **ram_memory,
PcGuestInfo *guest_info);
qemu_irq *pc_allocate_cpu_irq(void);
DeviceState *pc_vga_init(ISABus *isa_bus, PCIBus *pci_bus);
void pc_basic_device_init(ISABus *isa_bus, qemu_irq *gsi,

2
include/hw/pci-host/q35.h
View File

@ -55,6 +55,7 @@ typedef struct MCHPCIState {
uint8_t smm_enabled;
ram_addr_t below_4g_mem_size;
ram_addr_t above_4g_mem_size;
PcGuestInfo *guest_info;
} MCHPCIState;
typedef struct Q35PCIHost {
@ -81,6 +82,7 @@ typedef struct Q35PCIHost {
#define MCH_HOST_BRIDGE_PCIEXBAR 0x60 /* 64bit register */
#define MCH_HOST_BRIDGE_PCIEXBAR_SIZE 8 /* 64bit register */
#define MCH_HOST_BRIDGE_PCIEXBAR_DEFAULT 0xb0000000
#define MCH_HOST_BRIDGE_PCIEXBAR_MAX (0x10000000) /* 256M */
#define MCH_HOST_BRIDGE_PCIEXBAR_ADMSK Q35_MASK(64, 35, 28)
#define MCH_HOST_BRIDGE_PCIEXBAR_128ADMSK ((uint64_t)(1 << 26))
#define MCH_HOST_BRIDGE_PCIEXBAR_64ADMSK ((uint64_t)(1 << 25))

1
include/qemu/typedefs.h
View File

@ -64,5 +64,6 @@ typedef struct VirtIODevice VirtIODevice;
typedef struct QEMUSGList QEMUSGList;
typedef struct SHPCDevice SHPCDevice;
typedef struct FWCfgState FWCfgState;
typedef struct PcGuestInfo PcGuestInfo;
#endif /* QEMU_TYPEDEFS_H */