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iommu/vt-d: Make use of domain_alloc and domain_free 

Get rid of domain_init and domain_destroy and implement
domain_alloc/domain_free instead.

Reviewed-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
hifive-unleashed-5.1
Joerg Roedel 2015-03-26 13:43:08 +01:00
parent 3f4b87b959
commit 00a77deb0f
1 changed files with 28 additions and 20 deletions
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48
drivers/iommu/intel-iommu.c
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@ -339,7 +339,7 @@ struct dmar_domain {
DECLARE_BITMAP(iommu_bmp, DMAR_UNITS_SUPPORTED);
/* bitmap of iommus this domain uses*/
struct list_head devices; /* all devices' list */
struct list_head devices; /* all devices' list */
struct iova_domain iovad; /* iova's that belong to this domain */
struct dma_pte *pgd; /* virtual address */
@ -358,6 +358,9 @@ struct dmar_domain {
2 == 1GiB, 3 == 512GiB, 4 == 1TiB */
spinlock_t iommu_lock; /* protect iommu set in domain */
u64 max_addr; /* maximum mapped address */
struct iommu_domain domain; /* generic domain data structure for
iommu core */
};
/* PCI domain-device relationship */
@ -449,6 +452,12 @@ static LIST_HEAD(device_domain_list);
static const struct iommu_ops intel_iommu_ops;
/* Convert generic 'struct iommu_domain to private struct dmar_domain */
static struct dmar_domain *to_dmar_domain(struct iommu_domain *dom)
{
return container_of(dom, struct dmar_domain, domain);
}
static int __init intel_iommu_setup(char *str)
{
if (!str)
@ -4340,44 +4349,45 @@ static int md_domain_init(struct dmar_domain *domain, int guest_width)
return 0;
}
static int intel_iommu_domain_init(struct iommu_domain *domain)
static struct iommu_domain *intel_iommu_domain_alloc(unsigned type)
{
struct dmar_domain *dmar_domain;
struct iommu_domain *domain;
if (type != IOMMU_DOMAIN_UNMANAGED)
return NULL;
dmar_domain = alloc_domain(DOMAIN_FLAG_VIRTUAL_MACHINE);
if (!dmar_domain) {
printk(KERN_ERR
"intel_iommu_domain_init: dmar_domain == NULL\n");
return -ENOMEM;
return NULL;
}
if (md_domain_init(dmar_domain, DEFAULT_DOMAIN_ADDRESS_WIDTH)) {
printk(KERN_ERR
"intel_iommu_domain_init() failed\n");
domain_exit(dmar_domain);
return -ENOMEM;
return NULL;
}
domain_update_iommu_cap(dmar_domain);
domain->priv = dmar_domain;
domain = &dmar_domain->domain;
domain->geometry.aperture_start = 0;
domain->geometry.aperture_end = __DOMAIN_MAX_ADDR(dmar_domain->gaw);
domain->geometry.force_aperture = true;
return 0;
return domain;
}
static void intel_iommu_domain_destroy(struct iommu_domain *domain)
static void intel_iommu_domain_free(struct iommu_domain *domain)
{
struct dmar_domain *dmar_domain = domain->priv;
domain->priv = NULL;
domain_exit(dmar_domain);
domain_exit(to_dmar_domain(domain));
}
static int intel_iommu_attach_device(struct iommu_domain *domain,
struct device *dev)
{
struct dmar_domain *dmar_domain = domain->priv;
struct dmar_domain *dmar_domain = to_dmar_domain(domain);
struct intel_iommu *iommu;
int addr_width;
u8 bus, devfn;
@ -4442,16 +4452,14 @@ static int intel_iommu_attach_device(struct iommu_domain *domain,
static void intel_iommu_detach_device(struct iommu_domain *domain,
struct device *dev)
{
struct dmar_domain *dmar_domain = domain->priv;
domain_remove_one_dev_info(dmar_domain, dev);
domain_remove_one_dev_info(to_dmar_domain(domain), dev);
}
static int intel_iommu_map(struct iommu_domain *domain,
unsigned long iova, phys_addr_t hpa,
size_t size, int iommu_prot)
{
struct dmar_domain *dmar_domain = domain->priv;
struct dmar_domain *dmar_domain = to_dmar_domain(domain);
u64 max_addr;
int prot = 0;
int ret;
@ -4488,7 +4496,7 @@ static int intel_iommu_map(struct iommu_domain *domain,
static size_t intel_iommu_unmap(struct iommu_domain *domain,
unsigned long iova, size_t size)
{
struct dmar_domain *dmar_domain = domain->priv;
struct dmar_domain *dmar_domain = to_dmar_domain(domain);
struct page *freelist = NULL;
struct intel_iommu *iommu;
unsigned long start_pfn, last_pfn;
@ -4536,7 +4544,7 @@ static size_t intel_iommu_unmap(struct iommu_domain *domain,
static phys_addr_t intel_iommu_iova_to_phys(struct iommu_domain *domain,
dma_addr_t iova)
{
struct dmar_domain *dmar_domain = domain->priv;
struct dmar_domain *dmar_domain = to_dmar_domain(domain);
struct dma_pte *pte;
int level = 0;
u64 phys = 0;
@ -4595,8 +4603,8 @@ static void intel_iommu_remove_device(struct device *dev)
static const struct iommu_ops intel_iommu_ops = {
.capable = intel_iommu_capable,
.domain_init = intel_iommu_domain_init,
.domain_destroy = intel_iommu_domain_destroy,
.domain_alloc = intel_iommu_domain_alloc,
.domain_free = intel_iommu_domain_free,
.attach_dev = intel_iommu_attach_device,
.detach_dev = intel_iommu_detach_device,
.map = intel_iommu_map,