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amd-iommu: introduce for_each_iommu* macros 

This patch introduces the for_each_iommu and for_each_iommu_safe macros
to simplify the developers life when having to iterate over all AMD
IOMMUs in the system.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
hifive-unleashed-5.1
Joerg Roedel 2009-05-04 15:06:20 +02:00
parent 41fb454ebe
commit 3bd221724a
3 changed files with 16 additions and 8 deletions
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8
arch/x86/include/asm/amd_iommu_types.h
View File

@ -195,6 +195,14 @@
#define PD_DEFAULT_MASK (1UL << 1) /* domain is a default dma_ops
domain for an IOMMU */
/*
* Make iterating over all IOMMUs easier
*/
#define for_each_iommu(iommu) \
list_for_each_entry((iommu), &amd_iommu_list, list)
#define for_each_iommu_safe(iommu, next) \
list_for_each_entry_safe((iommu), (next), &amd_iommu_list, list)
/*
* This structure contains generic data for IOMMU protection domains
* independent of their use.

8
arch/x86/kernel/amd_iommu.c
View File

@ -213,7 +213,7 @@ irqreturn_t amd_iommu_int_handler(int irq, void *data)
{
struct amd_iommu *iommu;
list_for_each_entry(iommu, &amd_iommu_list, list)
for_each_iommu(iommu)
iommu_poll_events(iommu);
return IRQ_HANDLED;
@ -440,7 +440,7 @@ static void iommu_flush_domain(u16 domid)
__iommu_build_inv_iommu_pages(&cmd, CMD_INV_IOMMU_ALL_PAGES_ADDRESS,
domid, 1, 1);
list_for_each_entry(iommu, &amd_iommu_list, list) {
for_each_iommu(iommu) {
spin_lock_irqsave(&iommu->lock, flags);
__iommu_queue_command(iommu, &cmd);
__iommu_completion_wait(iommu);
@ -1672,7 +1672,7 @@ int __init amd_iommu_init_dma_ops(void)
* found in the system. Devices not assigned to any other
* protection domain will be assigned to the default one.
*/
list_for_each_entry(iommu, &amd_iommu_list, list) {
for_each_iommu(iommu) {
iommu->default_dom = dma_ops_domain_alloc(iommu, order);
if (iommu->default_dom == NULL)
return -ENOMEM;
@ -1710,7 +1710,7 @@ int __init amd_iommu_init_dma_ops(void)
free_domains:
list_for_each_entry(iommu, &amd_iommu_list, list) {
for_each_iommu(iommu) {
if (iommu->default_dom)
dma_ops_domain_free(iommu->default_dom);
}

8
arch/x86/kernel/amd_iommu_init.c
View File

@ -679,7 +679,7 @@ static void __init free_iommu_all(void)
{
struct amd_iommu *iommu, *next;
list_for_each_entry_safe(iommu, next, &amd_iommu_list, list) {
for_each_iommu_safe(iommu, next) {
list_del(&iommu->list);
free_iommu_one(iommu);
kfree(iommu);
@ -779,7 +779,7 @@ static int __init iommu_setup_msix(struct amd_iommu *iommu)
struct msix_entry entries[32]; /* only 32 supported by AMD IOMMU */
int nvec = 0, i;
list_for_each_entry(curr, &amd_iommu_list, list) {
for_each_iommu(curr) {
if (curr->dev == iommu->dev) {
entries[nvec].entry = curr->evt_msi_num;
entries[nvec].vector = 0;
@ -818,7 +818,7 @@ static int __init iommu_setup_msi(struct amd_iommu *iommu)
int r;
struct amd_iommu *curr;
list_for_each_entry(curr, &amd_iommu_list, list) {
for_each_iommu(curr) {
if (curr->dev == iommu->dev)
curr->int_enabled = true;
}
@ -971,7 +971,7 @@ static void __init enable_iommus(void)
{
struct amd_iommu *iommu;
list_for_each_entry(iommu, &amd_iommu_list, list) {
for_each_iommu(iommu) {
iommu_set_exclusion_range(iommu);
iommu_init_msi(iommu);
iommu_enable_event_logging(iommu);