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hv:move some APIs related host reset to pm.c

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move some data structures and APIs related host reset
from vm_reset.c to pm.c, these are not related with guest.

Tracked-On: #1842
Signed-off-by: Mingqiang Chi <mingqiang.chi@intel.com>
Reviewed-by: Jason Chen CJ <jason.cj.chen@intel.com>
This commit is contained in:
Mingqiang Chi
2019-08-19 13:05:54 +08:00
committed by ACRN System Integration
parent 2736b6c4cd
commit bd09f471a6
5 changed files with 70 additions and 66 deletions
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66
hypervisor/arch/x86/guest/vm_reset.c
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@@ -6,29 +6,13 @@
#include <vm.h>
#include <io.h>
#include <host_pm.h>
#include <logmsg.h>
#include <per_cpu.h>
#include <vm_reset.h>
#include <default_acpi_info.h>
#include <platform_acpi_info.h>
/* host reset register defined in ACPI */
static struct acpi_reset_reg host_reset_reg = {
.reg = {
.space_id = RESET_REGISTER_SPACE_ID,
.bit_width = RESET_REGISTER_BIT_WIDTH,
.bit_offset = RESET_REGISTER_BIT_OFFSET,
.access_size = RESET_REGISTER_ACCESS_SIZE,
.address = RESET_REGISTER_ADDRESS,
},
.val = RESET_REGISTER_VALUE
};
struct acpi_reset_reg *get_host_reset_reg_data(void)
{
return &host_reset_reg;
}
/**
* @pre vm != NULL
*/
@@ -70,45 +54,6 @@ void triple_fault_shutdown_vm(struct acrn_vcpu *vcpu)
}
}
static void reset_host(void)
{
struct acpi_generic_address *gas = &(host_reset_reg.reg);
/* TODO: gracefully shut down all guests before doing host reset. */
/*
* UEFI more likely sets the reset value as 0x6 (not 0xe) for 0xcf9 port.
* This asserts PLTRST# to reset devices on the platform, but not the
* SLP_S3#/4#/5# signals, which power down the systems. This might not be
* enough for us.
*/
if ((gas->space_id == SPACE_SYSTEM_IO) &&
(gas->bit_width == 8U) && (gas->bit_offset == 0U) &&
(gas->address != 0U) && (gas->address != 0xcf9U)) {
pio_write8(host_reset_reg.val, (uint16_t)host_reset_reg.reg.address);
}
/*
* Fall back
* making sure bit 2 (RST_CPU) is '0', when the reset command is issued.
*/
pio_write8(0x2U, 0xcf9U);
pio_write8(0xeU, 0xcf9U);
/*
* Fall back
* keyboard controller might cause the INIT# being asserted,
* and not power cycle the system.
*/
pio_write8(0xfeU, 0x64U);
pr_fatal("%s(): can't reset host.", __func__);
while (1) {
asm_pause();
}
}
/**
* @pre vcpu != NULL
* @pre vcpu->vm != NULL
@@ -197,7 +142,9 @@ static bool handle_cf9_write(struct acrn_vcpu *vcpu, __unused uint16_t addr, siz
static bool handle_reset_reg_write(struct acrn_vcpu *vcpu, uint16_t addr, size_t bytes, uint32_t val)
{
if (bytes == 1U) {
if (val == host_reset_reg.val) {
struct acpi_reset_reg *reset_reg = get_host_reset_reg_data();
if (val == reset_reg->val) {
if (is_highest_severity_vm(vcpu->vm)) {
reset_host();
} else {
@@ -223,7 +170,8 @@ void register_reset_port_handler(struct acrn_vm *vm)
{
/* Don't support SOS and pre-launched VM re-launch for now. */
if (!is_postlaunched_vm(vm) || is_rt_vm(vm)) {
struct acpi_generic_address *gas = &(host_reset_reg.reg);
struct acpi_reset_reg *reset_reg = get_host_reset_reg_data();
struct acpi_generic_address *gas = &(reset_reg->reg);
struct vm_io_range io_range = {
.len = 1U
@@ -247,7 +195,7 @@ void register_reset_port_handler(struct acrn_vm *vm)
(gas->bit_width == 8U) && (gas->bit_offset == 0U) &&
(gas->address != 0xcf9U) && (gas->address != 0x64U)) {
io_range.base = (uint16_t)host_reset_reg.reg.address;
io_range.base = (uint16_t)reset_reg->reg.address;
register_pio_emulation_handler(vm, PIO_RESET_REG_IDX, &io_range,
handle_reset_reg_read, handle_reset_reg_write);
}