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hv: vtd: add do_action_for_iommus

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Add an internal API to do action according to action function provided,
which can simplify the code.

Tracked-On: #1855
Signed-off-by: Binbin Wu <binbin.wu@intel.com>
Reviewed-by: Eddie Dong <eddie.dong@intel.com>
This commit is contained in:
Binbin Wu 2018-11-08 14:42:53 +08:00 committed by lijinxia
parent 32ed3d1a76
commit a2cb9c2b6a
1 changed files with 60 additions and 74 deletions
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134
hypervisor/arch/x86/vtd.c
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@ -796,6 +796,43 @@ static void dmar_disable(struct dmar_drhd_rt *dmar_unit)
dmar_fault_event_mask(dmar_unit);
}
static void dmar_suspend(struct dmar_drhd_rt *dmar_unit)
{
uint32_t i;
/* flush */
dmar_write_buffer_flush(dmar_unit);
dmar_invalid_context_cache_global(dmar_unit);
dmar_invalid_iotlb_global(dmar_unit);
/* save IOMMU fault register state */
for (i = 0U; i < IOMMU_FAULT_REGISTER_STATE_NUM; i++) {
dmar_unit->fault_state[i] = iommu_read32(dmar_unit, DMAR_FECTL_REG + (i * IOMMU_FAULT_REGISTER_SIZE));
}
/* disable translation */
dmar_disable_translation(dmar_unit);
}
static void dmar_resume(struct dmar_drhd_rt *dmar_unit)
{
uint32_t i;
/* set root table */
dmar_set_root_table(dmar_unit);
/* flush */
dmar_write_buffer_flush(dmar_unit);
dmar_invalid_context_cache_global(dmar_unit);
dmar_invalid_iotlb_global(dmar_unit);
/* restore IOMMU fault register state */
for (i = 0U; i < IOMMU_FAULT_REGISTER_STATE_NUM; i++) {
iommu_write32(dmar_unit, DMAR_FECTL_REG + (i * IOMMU_FAULT_REGISTER_SIZE), dmar_unit->fault_state[i]);
}
/* enable translation */
dmar_enable_translation(dmar_unit);
}
static int add_iommu_device(struct iommu_domain *domain, uint16_t segment, uint8_t bus, uint8_t devfun)
{
struct dmar_drhd_rt *dmar_unit;
@ -949,6 +986,25 @@ static int remove_iommu_device(const struct iommu_domain *domain, uint16_t segme
return 0;
}
static void do_action_for_iommus(void (*action)(struct dmar_drhd_rt *))
{
struct dmar_info *info = get_dmar_info();
struct dmar_drhd_rt *dmar_unit;
uint32_t i;
if (action == NULL)
return;
for (i = 0U; i < info->drhd_count; i++) {
dmar_unit = &dmar_drhd_units[i];
if (!dmar_unit->drhd->ignore) {
action(dmar_unit);
} else {
dev_dbg(ACRN_DBG_IOMMU, "ignore dmar_unit @0x%x", dmar_unit->drhd->reg_base_addr);
}
}
}
struct iommu_domain *create_iommu_domain(uint16_t vm_id, uint64_t translation_table, uint32_t addr_width)
{
struct iommu_domain *domain;
@ -1021,92 +1077,22 @@ int unassign_iommu_device(const struct iommu_domain *domain, uint8_t bus, uint8_
void enable_iommu(void)
{
struct dmar_info *info = get_dmar_info();
struct dmar_drhd_rt *dmar_unit;
uint32_t j;
for (j = 0U; j < info->drhd_count; j++) {
dmar_unit = &dmar_drhd_units[j];
if (!dmar_unit->drhd->ignore) {
dmar_enable(dmar_unit);
}
else {
dev_dbg(ACRN_DBG_IOMMU, "ignore dmar_unit @0x%x", dmar_unit->drhd->reg_base_addr);
}
}
do_action_for_iommus(dmar_enable);
}
void disable_iommu(void)
{
struct dmar_info *info = get_dmar_info();
struct dmar_drhd_rt *dmar_unit;
uint32_t j;
for (j = 0U; j < info->drhd_count; j++) {
dmar_unit = &dmar_drhd_units[j];
dmar_disable(dmar_unit);
}
do_action_for_iommus(dmar_disable);
}
void suspend_iommu(void)
{
struct dmar_info *info = get_dmar_info();
struct dmar_drhd_rt *dmar_unit;
uint32_t i, j;
for (j = 0U; j < info->drhd_count; j++) {
dmar_unit = &dmar_drhd_units[j];
if (dmar_unit->drhd->ignore) {
continue;
}
/* flush */
dmar_write_buffer_flush(dmar_unit);
dmar_invalid_context_cache_global(dmar_unit);
dmar_invalid_iotlb_global(dmar_unit);
/* save IOMMU fault register state */
for (i = 0U; i < IOMMU_FAULT_REGISTER_STATE_NUM; i++) {
dmar_unit->fault_state[i] = iommu_read32(dmar_unit,
DMAR_FECTL_REG + (i * IOMMU_FAULT_REGISTER_SIZE));
}
/* disable translation */
dmar_disable_translation(dmar_unit);
}
do_action_for_iommus(dmar_suspend);
}
void resume_iommu(void)
{
struct dmar_drhd_rt *dmar_unit;
struct dmar_info *info = get_dmar_info();
uint32_t i, j;
/* restore IOMMU fault register state */
for (j = 0U; j < info->drhd_count; j++) {
dmar_unit = &dmar_drhd_units[j];
if (dmar_unit->drhd->ignore) {
continue;
}
/* set root table */
dmar_set_root_table(dmar_unit);
/* flush */
dmar_write_buffer_flush(dmar_unit);
dmar_invalid_context_cache_global(dmar_unit);
dmar_invalid_iotlb_global(dmar_unit);
/* restore IOMMU fault register state */
for (i = 0U; i < IOMMU_FAULT_REGISTER_STATE_NUM; i++) {
iommu_write32(dmar_unit, DMAR_FECTL_REG + (i * IOMMU_FAULT_REGISTER_SIZE),
dmar_unit->fault_state[i]);
}
/* enable translation */
dmar_enable_translation(dmar_unit);
}
do_action_for_iommus(dmar_resume);
}
int init_iommu(void)