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Commit 00a77deb authored by Joerg Roedel's avatar Joerg Roedel
Browse files

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: default avatarAlex Williamson <alex.williamson@redhat.com>
Signed-off-by: default avatarJoerg Roedel <jroedel@suse.de>
parent 3f4b87b9

drivers/iommu/intel-iommu.c

+28 −20
Original line number Diff line number Diff line
@@ -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,