mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-25 04:50:57 +07:00
Merge branch 'core-iommu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull core/iommu changes for v3.4 from Ingo Molnar * 'core-iommu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/iommu/intel: Increase the number of iommus supported to MAX_IO_APICS x86/iommu/intel: Fix identity mapping for sandy bridge
This commit is contained in:
Linus Torvalds
commit
b7f077d7bc
@ -48,8 +48,6 @@
|
||||
#define ROOT_SIZE VTD_PAGE_SIZE
|
||||
#define CONTEXT_SIZE VTD_PAGE_SIZE
|
||||
|
||||
#define IS_BRIDGE_HOST_DEVICE(pdev) \
|
||||
((pdev->class >> 8) == PCI_CLASS_BRIDGE_HOST)
|
||||
#define IS_GFX_DEVICE(pdev) ((pdev->class >> 16) == PCI_BASE_CLASS_DISPLAY)
|
||||
#define IS_ISA_DEVICE(pdev) ((pdev->class >> 8) == PCI_CLASS_BRIDGE_ISA)
|
||||
#define IS_AZALIA(pdev) ((pdev)->vendor == 0x8086 && (pdev)->device == 0x3a3e)
|
||||
@ -356,10 +354,18 @@ static int hw_pass_through = 1;
|
||||
/* si_domain contains mulitple devices */
|
||||
#define DOMAIN_FLAG_STATIC_IDENTITY (1 << 2)
|
||||
|
||||
/* define the limit of IOMMUs supported in each domain */
|
||||
#ifdef CONFIG_X86
|
||||
# define IOMMU_UNITS_SUPPORTED MAX_IO_APICS
|
||||
#else
|
||||
# define IOMMU_UNITS_SUPPORTED 64
|
||||
#endif
|
||||
|
||||
struct dmar_domain {
|
||||
int id; /* domain id */
|
||||
int nid; /* node id */
|
||||
unsigned long iommu_bmp; /* bitmap of iommus this domain uses*/
|
||||
DECLARE_BITMAP(iommu_bmp, IOMMU_UNITS_SUPPORTED);
|
||||
/* bitmap of iommus this domain uses*/
|
||||
|
||||
struct list_head devices; /* all devices' list */
|
||||
struct iova_domain iovad; /* iova's that belong to this domain */
|
||||
@ -571,7 +577,7 @@ static struct intel_iommu *domain_get_iommu(struct dmar_domain *domain)
|
||||
BUG_ON(domain->flags & DOMAIN_FLAG_VIRTUAL_MACHINE);
|
||||
BUG_ON(domain->flags & DOMAIN_FLAG_STATIC_IDENTITY);
|
||||
|
||||
iommu_id = find_first_bit(&domain->iommu_bmp, g_num_of_iommus);
|
||||
iommu_id = find_first_bit(domain->iommu_bmp, g_num_of_iommus);
|
||||
if (iommu_id < 0 || iommu_id >= g_num_of_iommus)
|
||||
return NULL;
|
||||
|
||||
@ -584,7 +590,7 @@ static void domain_update_iommu_coherency(struct dmar_domain *domain)
|
||||
|
||||
domain->iommu_coherency = 1;
|
||||
|
||||
for_each_set_bit(i, &domain->iommu_bmp, g_num_of_iommus) {
|
||||
for_each_set_bit(i, domain->iommu_bmp, g_num_of_iommus) {
|
||||
if (!ecap_coherent(g_iommus[i]->ecap)) {
|
||||
domain->iommu_coherency = 0;
|
||||
break;
|
||||
@ -598,7 +604,7 @@ static void domain_update_iommu_snooping(struct dmar_domain *domain)
|
||||
|
||||
domain->iommu_snooping = 1;
|
||||
|
||||
for_each_set_bit(i, &domain->iommu_bmp, g_num_of_iommus) {
|
||||
for_each_set_bit(i, domain->iommu_bmp, g_num_of_iommus) {
|
||||
if (!ecap_sc_support(g_iommus[i]->ecap)) {
|
||||
domain->iommu_snooping = 0;
|
||||
break;
|
||||
@ -1334,7 +1340,7 @@ static struct dmar_domain *alloc_domain(void)
|
||||
return NULL;
|
||||
|
||||
domain->nid = -1;
|
||||
memset(&domain->iommu_bmp, 0, sizeof(unsigned long));
|
||||
memset(domain->iommu_bmp, 0, sizeof(domain->iommu_bmp));
|
||||
domain->flags = 0;
|
||||
|
||||
return domain;
|
||||
@ -1360,7 +1366,7 @@ static int iommu_attach_domain(struct dmar_domain *domain,
|
||||
|
||||
domain->id = num;
|
||||
set_bit(num, iommu->domain_ids);
|
||||
set_bit(iommu->seq_id, &domain->iommu_bmp);
|
||||
set_bit(iommu->seq_id, domain->iommu_bmp);
|
||||
iommu->domains[num] = domain;
|
||||
spin_unlock_irqrestore(&iommu->lock, flags);
|
||||
|
||||
@ -1385,7 +1391,7 @@ static void iommu_detach_domain(struct dmar_domain *domain,
|
||||
|
||||
if (found) {
|
||||
clear_bit(num, iommu->domain_ids);
|
||||
clear_bit(iommu->seq_id, &domain->iommu_bmp);
|
||||
clear_bit(iommu->seq_id, domain->iommu_bmp);
|
||||
iommu->domains[num] = NULL;
|
||||
}
|
||||
spin_unlock_irqrestore(&iommu->lock, flags);
|
||||
@ -1527,7 +1533,7 @@ static void domain_exit(struct dmar_domain *domain)
|
||||
dma_pte_free_pagetable(domain, 0, DOMAIN_MAX_PFN(domain->gaw));
|
||||
|
||||
for_each_active_iommu(iommu, drhd)
|
||||
if (test_bit(iommu->seq_id, &domain->iommu_bmp))
|
||||
if (test_bit(iommu->seq_id, domain->iommu_bmp))
|
||||
iommu_detach_domain(domain, iommu);
|
||||
|
||||
free_domain_mem(domain);
|
||||
@ -1653,7 +1659,7 @@ static int domain_context_mapping_one(struct dmar_domain *domain, int segment,
|
||||
spin_unlock_irqrestore(&iommu->lock, flags);
|
||||
|
||||
spin_lock_irqsave(&domain->iommu_lock, flags);
|
||||
if (!test_and_set_bit(iommu->seq_id, &domain->iommu_bmp)) {
|
||||
if (!test_and_set_bit(iommu->seq_id, domain->iommu_bmp)) {
|
||||
domain->iommu_count++;
|
||||
if (domain->iommu_count == 1)
|
||||
domain->nid = iommu->node;
|
||||
@ -2369,18 +2375,18 @@ static int __init iommu_prepare_static_identity_mapping(int hw)
|
||||
return -EFAULT;
|
||||
|
||||
for_each_pci_dev(pdev) {
|
||||
/* Skip Host/PCI Bridge devices */
|
||||
if (IS_BRIDGE_HOST_DEVICE(pdev))
|
||||
continue;
|
||||
if (iommu_should_identity_map(pdev, 1)) {
|
||||
printk(KERN_INFO "IOMMU: %s identity mapping for device %s\n",
|
||||
hw ? "hardware" : "software", pci_name(pdev));
|
||||
|
||||
ret = domain_add_dev_info(si_domain, pdev,
|
||||
hw ? CONTEXT_TT_PASS_THROUGH :
|
||||
CONTEXT_TT_MULTI_LEVEL);
|
||||
if (ret)
|
||||
hw ? CONTEXT_TT_PASS_THROUGH :
|
||||
CONTEXT_TT_MULTI_LEVEL);
|
||||
if (ret) {
|
||||
/* device not associated with an iommu */
|
||||
if (ret == -ENODEV)
|
||||
continue;
|
||||
return ret;
|
||||
}
|
||||
pr_info("IOMMU: %s identity mapping for device %s\n",
|
||||
hw ? "hardware" : "software", pci_name(pdev));
|
||||
}
|
||||
}
|
||||
|
||||
@ -2402,12 +2408,17 @@ static int __init init_dmars(void)
|
||||
* endfor
|
||||
*/
|
||||
for_each_drhd_unit(drhd) {
|
||||
g_num_of_iommus++;
|
||||
/*
|
||||
* lock not needed as this is only incremented in the single
|
||||
* threaded kernel __init code path all other access are read
|
||||
* only
|
||||
*/
|
||||
if (g_num_of_iommus < IOMMU_UNITS_SUPPORTED) {
|
||||
g_num_of_iommus++;
|
||||
continue;
|
||||
}
|
||||
printk_once(KERN_ERR "intel-iommu: exceeded %d IOMMUs\n",
|
||||
IOMMU_UNITS_SUPPORTED);
|
||||
}
|
||||
|
||||
g_iommus = kcalloc(g_num_of_iommus, sizeof(struct intel_iommu *),
|
||||
@ -3748,7 +3759,7 @@ static void domain_remove_one_dev_info(struct dmar_domain *domain,
|
||||
if (found == 0) {
|
||||
unsigned long tmp_flags;
|
||||
spin_lock_irqsave(&domain->iommu_lock, tmp_flags);
|
||||
clear_bit(iommu->seq_id, &domain->iommu_bmp);
|
||||
clear_bit(iommu->seq_id, domain->iommu_bmp);
|
||||
domain->iommu_count--;
|
||||
domain_update_iommu_cap(domain);
|
||||
spin_unlock_irqrestore(&domain->iommu_lock, tmp_flags);
|
||||
@ -3790,7 +3801,7 @@ static void vm_domain_remove_all_dev_info(struct dmar_domain *domain)
|
||||
*/
|
||||
spin_lock_irqsave(&domain->iommu_lock, flags2);
|
||||
if (test_and_clear_bit(iommu->seq_id,
|
||||
&domain->iommu_bmp)) {
|
||||
domain->iommu_bmp)) {
|
||||
domain->iommu_count--;
|
||||
domain_update_iommu_cap(domain);
|
||||
}
|
||||
@ -3815,7 +3826,7 @@ static struct dmar_domain *iommu_alloc_vm_domain(void)
|
||||
|
||||
domain->id = vm_domid++;
|
||||
domain->nid = -1;
|
||||
memset(&domain->iommu_bmp, 0, sizeof(unsigned long));
|
||||
memset(domain->iommu_bmp, 0, sizeof(domain->iommu_bmp));
|
||||
domain->flags = DOMAIN_FLAG_VIRTUAL_MACHINE;
|
||||
|
||||
return domain;
|
||||
|
||||
Loading…
Reference in New Issue
Block a user