[PATCH 14/15] iommu/fsl: Make use of domain_alloc and domain_free

Joerg Roedel
2015-01-26T23:53:03Z

Implement domain_alloc and domain_free iommu-ops as a
replacement for domain_init/domain_destroy.

Signed-off-by: Joerg Roedel <jroedel@suse.de>
---
drivers/iommu/fsl_pamu_domain.c | 60 ++++++++++++++++++++++-------------------
drivers/iommu/fsl_pamu_domain.h | 2 +-
2 files changed, 33 insertions(+), 29 deletions(-)

diff --git a/drivers/iommu/fsl_pamu_domain.c b/drivers/iommu/fsl_pamu_domain.c
index c828f80..7c16c80 100644
--- a/drivers/iommu/fsl_pamu_domain.c
+++ b/drivers/iommu/fsl_pamu_domain.c
@@ -49,6 +49,11 @@ static struct kmem_cache *fsl_pamu_domain_cache;
static struct kmem_cache *iommu_devinfo_cache;
static DEFINE_SPINLOCK(device_domain_lock);

+static struct fsl_dma_domain *to_fsl_dma_domain(struct iommu_domain *dom)
+{
+ return container_of(dom, struct fsl_dma_domain, iommu_domain);
+}
+
static int __init iommu_init_mempool(void)
{

@@ -84,7 +89,7 @@ static phys_addr_t get_phys_addr(struct fsl_dma_domain *dma_domain, dma_addr_t i
&dma_domain->win_arr[0];
struct iommu_domain_geometry *geom;

- geom = &dma_domain->iommu_domain->geometry;
+ geom = &dma_domain->iommu_domain.geometry;

if (!win_cnt || !dma_domain->geom_size) {
pr_debug("Number of windows/geometry not configured for the domain\n");
@@ -144,7 +149,7 @@ static int map_win(int liodn, struct fsl_dma_domain *dma_domain)
{
int ret;
struct dma_window *wnd = &dma_domain->win_arr[0];
- phys_addr_t wnd_addr = dma_domain->iommu_domain->geometry.aperture_start;
+ phys_addr_t wnd_addr = dma_domain->iommu_domain.geometry.aperture_start;
unsigned long flags;

spin_lock_irqsave(&iommu_lock, flags);
@@ -194,7 +199,7 @@ static int update_liodn(int liodn, struct fsl_dma_domain *dma_domain, u32 wnd_nr
} else {
phys_addr_t wnd_addr;

- wnd_addr = dma_domain->iommu_domain->geometry.aperture_start;
+ wnd_addr = dma_domain->iommu_domain.geometry.aperture_start;

ret = pamu_config_ppaace(liodn, wnd_addr,
wnd->size,
@@ -402,7 +407,7 @@ static void attach_device(struct fsl_dma_domain *dma_domain, int liodn, struct d
static phys_addr_t fsl_pamu_iova_to_phys(struct iommu_domain *domain,
dma_addr_t iova)
{
- struct fsl_dma_domain *dma_domain = domain->priv;
+ struct fsl_dma_domain *dma_domain = to_fsl_dma_domain(domain);

if ((iova < domain->geometry.aperture_start) ||
iova > (domain->geometry.aperture_end))
@@ -416,11 +421,9 @@ static bool fsl_pamu_capable(enum iommu_cap cap)
return cap == IOMMU_CAP_CACHE_COHERENCY;
}

-static void fsl_pamu_domain_destroy(struct iommu_domain *domain)
+static void fsl_pamu_domain_free(struct iommu_domain *domain)
{
- struct fsl_dma_domain *dma_domain = domain->priv;
-
- domain->priv = NULL;
+ struct fsl_dma_domain *dma_domain = to_fsl_dma_domain(domain);

/* remove all the devices from the device list */
detach_device(NULL, dma_domain);
@@ -431,23 +434,24 @@ static void fsl_pamu_domain_destroy(struct iommu_domain *domain)
kmem_cache_free(fsl_pamu_domain_cache, dma_domain);
}

-static int fsl_pamu_domain_init(struct iommu_domain *domain)
+static struct iommu_domain *fsl_pamu_domain_alloc(enum iommu_domain_type type)
{
struct fsl_dma_domain *dma_domain;

+ if (type != IOMMU_DOMAIN_UNMANAGED)
+ return NULL;
+
dma_domain = iommu_alloc_dma_domain();
if (!dma_domain) {
pr_debug("dma_domain allocation failed\n");
- return -ENOMEM;
+ return NULL;
}
- domain->priv = dma_domain;
- dma_domain->iommu_domain = domain;
/* defaul geometry 64 GB i.e. maximum system address */
- domain->geometry.aperture_start = 0;
- domain->geometry.aperture_end = (1ULL << 36) - 1;
- domain->geometry.force_aperture = true;
+ dma_domain->iommu_domain. geometry.aperture_start = 0;
+ dma_domain->iommu_domain.geometry.aperture_end = (1ULL << 36) - 1;
+ dma_domain->iommu_domain.geometry.force_aperture = true;

- return 0;
+ return &dma_domain->iommu_domain;
}

/* Configure geometry settings for all LIODNs associated with domain */
@@ -517,7 +521,7 @@ static int disable_domain_win(struct fsl_dma_domain *dma_domain, u32 wnd_nr)

static void fsl_pamu_window_disable(struct iommu_domain *domain, u32 wnd_nr)
{
- struct fsl_dma_domain *dma_domain = domain->priv;
+ struct fsl_dma_domain *dma_domain = to_fsl_dma_domain(domain);
unsigned long flags;
int ret;

@@ -549,7 +553,7 @@ static void fsl_pamu_window_disable(struct iommu_domain *domain, u32 wnd_nr)
static int fsl_pamu_window_enable(struct iommu_domain *domain, u32 wnd_nr,
phys_addr_t paddr, u64 size, int prot)
{
- struct fsl_dma_domain *dma_domain = domain->priv;
+ struct fsl_dma_domain *dma_domain = to_fsl_dma_domain(domain);
struct dma_window *wnd;
int pamu_prot = 0;
int ret;
@@ -626,7 +630,7 @@ static int handle_attach_device(struct fsl_dma_domain *dma_domain,
int num)
{
unsigned long flags;
- struct iommu_domain *domain = dma_domain->iommu_domain;
+ struct iommu_domain *domain = &dma_domain->iommu_domain;
int ret = 0;
int i;

@@ -673,7 +677,7 @@ static int handle_attach_device(struct fsl_dma_domain *dma_domain,
static int fsl_pamu_attach_device(struct iommu_domain *domain,
struct device *dev)
{
- struct fsl_dma_domain *dma_domain = domain->priv;
+ struct fsl_dma_domain *dma_domain = to_fsl_dma_domain(domain);
const u32 *liodn;
u32 liodn_cnt;
int len, ret = 0;
@@ -712,7 +716,7 @@ static int fsl_pamu_attach_device(struct iommu_domain *domain,
static void fsl_pamu_detach_device(struct iommu_domain *domain,
struct device *dev)
{
- struct fsl_dma_domain *dma_domain = domain->priv;
+ struct fsl_dma_domain *dma_domain = to_fsl_dma_domain(domain);
const u32 *prop;
int len;
struct pci_dev *pdev = NULL;
@@ -744,7 +748,7 @@ static void fsl_pamu_detach_device(struct iommu_domain *domain,
static int configure_domain_geometry(struct iommu_domain *domain, void *data)
{
struct iommu_domain_geometry *geom_attr = data;
- struct fsl_dma_domain *dma_domain = domain->priv;
+ struct fsl_dma_domain *dma_domain = to_fsl_dma_domain(domain);
dma_addr_t geom_size;
unsigned long flags;

@@ -835,7 +839,7 @@ static int configure_domain_dma_state(struct fsl_dma_domain *dma_domain, bool en
static int fsl_pamu_set_domain_attr(struct iommu_domain *domain,
enum iommu_attr attr_type, void *data)
{
- struct fsl_dma_domain *dma_domain = domain->priv;
+ struct fsl_dma_domain *dma_domain = to_fsl_dma_domain(domain);
int ret = 0;

@@ -861,7 +865,7 @@ static int fsl_pamu_set_domain_attr(struct iommu_domain *domain,
static int fsl_pamu_get_domain_attr(struct iommu_domain *domain,
enum iommu_attr attr_type, void *data)
{
- struct fsl_dma_domain *dma_domain = domain->priv;
+ struct fsl_dma_domain *dma_domain = to_fsl_dma_domain(domain);
int ret = 0;

@@ -1025,7 +1029,7 @@ static void fsl_pamu_remove_device(struct device *dev)

static int fsl_pamu_set_windows(struct iommu_domain *domain, u32 w_count)
{
- struct fsl_dma_domain *dma_domain = domain->priv;
+ struct fsl_dma_domain *dma_domain = to_fsl_dma_domain(domain);
unsigned long flags;
int ret;

@@ -1073,15 +1077,15 @@ static int fsl_pamu_set_windows(struct iommu_domain *domain, u32 w_count)

static u32 fsl_pamu_get_windows(struct iommu_domain *domain)
{
- struct fsl_dma_domain *dma_domain = domain->priv;
+ struct fsl_dma_domain *dma_domain = to_fsl_dma_domain(domain);

return dma_domain->win_cnt;
}

static const struct iommu_ops fsl_pamu_ops = {
.capable = fsl_pamu_capable,
- .domain_init = fsl_pamu_domain_init,
- .domain_destroy = fsl_pamu_domain_destroy,
+ .domain_alloc = fsl_pamu_domain_alloc,
+ .domain_free = fsl_pamu_domain_free,
.attach_dev = fsl_pamu_attach_device,
.detach_dev = fsl_pamu_detach_device,
.domain_window_enable = fsl_pamu_window_enable,
diff --git a/drivers/iommu/fsl_pamu_domain.h b/drivers/iommu/fsl_pamu_domain.h
index c90293f..f2b0f74 100644
--- a/drivers/iommu/fsl_pamu_domain.h
+++ b/drivers/iommu/fsl_pamu_domain.h
@@ -71,7 +71,7 @@ struct fsl_dma_domain {
u32 stash_id;
struct pamu_stash_attribute dma_stash;
u32 snoop_id;
- struct iommu_domain *iommu_domain;
+ struct iommu_domain iommu_domain;
spinlock_t domain_lock;
};

--
1.8.4.5