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Code Issues Releases Wiki Activity

iommu/ipmmu-vmsa: Drop IOVA cookie management 

The core code bakes its own cookies now.

Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Tested-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Link: https://lore.kernel.org/r/dc5513293942d81f84edf61b354b236e5ac51dc2.1628682048.git.robin.murphy@arm.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Robin Murphy 2021-08-11 13:21:20 +01:00 committed by Joerg Roedel
parent 4a376d4ac1
commit 5d8941824e
1 changed files with 4 additions and 24 deletions
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28
drivers/iommu/ipmmu-vmsa.c
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@ -8,7 +8,6 @@
#include <linux/bitmap.h>
#include <linux/delay.h>
#include <linux/dma-iommu.h>
#include <linux/dma-mapping.h>
#include <linux/err.h>
#include <linux/export.h>
@ -564,10 +563,13 @@ static irqreturn_t ipmmu_irq(int irq, void *dev)
* IOMMU Operations
*/
static struct iommu_domain *__ipmmu_domain_alloc(unsigned type)
static struct iommu_domain *ipmmu_domain_alloc(unsigned type)
{
struct ipmmu_vmsa_domain *domain;
if (type != IOMMU_DOMAIN_UNMANAGED && type != IOMMU_DOMAIN_DMA)
return NULL;
domain = kzalloc(sizeof(*domain), GFP_KERNEL);
if (!domain)
return NULL;
@ -577,27 +579,6 @@ static struct iommu_domain *__ipmmu_domain_alloc(unsigned type)
return &domain->io_domain;
}
static struct iommu_domain *ipmmu_domain_alloc(unsigned type)
{
struct iommu_domain *io_domain = NULL;
switch (type) {
case IOMMU_DOMAIN_UNMANAGED:
io_domain = __ipmmu_domain_alloc(type);
break;
case IOMMU_DOMAIN_DMA:
io_domain = __ipmmu_domain_alloc(type);
if (io_domain && iommu_get_dma_cookie(io_domain)) {
kfree(io_domain);
io_domain = NULL;
}
break;
}
return io_domain;
}
static void ipmmu_domain_free(struct iommu_domain *io_domain)
{
struct ipmmu_vmsa_domain *domain = to_vmsa_domain(io_domain);
@ -606,7 +587,6 @@ static void ipmmu_domain_free(struct iommu_domain *io_domain)
* Free the domain resources. We assume that all devices have already
* been detached.
*/
iommu_put_dma_cookie(io_domain);
ipmmu_domain_destroy_context(domain);
free_io_pgtable_ops(domain->iop);
kfree(domain);