github/acrn-hypervisor
1
0
Fork 0
mirror of https://github.com/projectacrn/acrn-hypervisor.git synced 2025-09-23 09:47:44 +00:00
Code Issues Projects Releases Wiki Activity

hv: Add suspend/resume callback for ioapic

Browse Source 
These two functions will be called when ACRN enter/exit S3.

Signed-off-by: Zheng Gen <gen.zheng@intel.com>
Signed-off-by: Yan Like <like.yan@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
This commit is contained in:
Yin Fengwei
2018-06-04 14:45:33 +08:00
committed by lijinxia
parent ddd03d6252
commit d2ea4546c3
2 changed files with 46 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

42
hypervisor/arch/x86/ioapic.c
View File

@@ -10,6 +10,8 @@
#define IOAPIC_REGSEL_OFFSET 0
#define IOAPIC_WINSWL_OFFSET 0x10
#define IOAPIC_MAX_PIN 256
/* IOAPIC Redirection Table (RTE) Entry structure */
struct ioapic_rte {
uint32_t lo_32;
@@ -25,6 +27,8 @@ static struct gsi_table gsi_table[NR_MAX_GSI];
static uint32_t nr_gsi;
static spinlock_t ioapic_lock;
static struct ioapic_rte saved_rte[CONFIG_NR_IOAPICS][IOAPIC_MAX_PIN];
/*
* the irq to ioapic pin mapping should extract from ACPI MADT table
* hardcoded here
@@ -372,6 +376,44 @@ void dump_ioapic(void)
}
}
void suspend_ioapic(void)
{
int ioapic_id, ioapic_pin;
for (ioapic_id = 0; ioapic_id < CONFIG_NR_IOAPICS; ioapic_id++) {
int max_pins;
int version;
void *addr;
addr = map_ioapic(get_ioapic_base(ioapic_id));
version = ioapic_read_reg32(addr, IOAPIC_VER);
max_pins = (version & IOAPIC_MAX_RTE_MASK) >> MAX_RTE_SHIFT;
for (ioapic_pin = 0; ioapic_pin < max_pins; ioapic_pin++)
ioapic_get_rte_entry(addr, ioapic_pin,
&saved_rte[ioapic_id][ioapic_pin]);
}
}
void resume_ioapic(void)
{
int ioapic_id, ioapic_pin;
for (ioapic_id = 0; ioapic_id < CONFIG_NR_IOAPICS; ioapic_id++) {
int max_pins;
int version;
void *addr;
addr = map_ioapic(get_ioapic_base(ioapic_id));
version = ioapic_read_reg32(addr, IOAPIC_VER);
max_pins = (version & IOAPIC_MAX_RTE_MASK) >> MAX_RTE_SHIFT;
for (ioapic_pin = 0; ioapic_pin < max_pins; ioapic_pin++)
ioapic_set_rte_entry(addr, ioapic_pin,
&saved_rte[ioapic_id][ioapic_pin]);
}
}
void get_rte_info(struct ioapic_rte *rte, bool *mask, bool *irr,
bool *phys, int *delmode, bool *level, int *vector, uint32_t *dest)
{