> -----Original Message----- > From: iommu-bounces@xxxxxxxxxxxxxxxxxxxxxxxxxx [mailto:iommu- > bounces@xxxxxxxxxxxxxxxxxxxxxxxxxx] On Behalf Of Joerg Roedel > Sent: Thursday, March 26, 2015 6:13 PM > To: iommu@xxxxxxxxxxxxxxxxxxxxxxxxxx > Cc: Alexandre Courbot; linux-samsung-soc@xxxxxxxxxxxxxxx; Heiko Stuebner; > Arnd Bergmann; Stephen Warren; Will Deacon; linux- > kernel@xxxxxxxxxxxxxxx; linux-rockchip@xxxxxxxxxxxxxxxxxxx; Kukjin Kim; > Thierry Reding; jroedel@xxxxxxx; linux-tegra@xxxxxxxxxxxxxxx; Yingjoe > Chen; David Woodhouse; linux-arm-kernel@xxxxxxxxxxxxxxxxxxx > Subject: [PATCH 15/16] iommu/fsl: Make use of domain_alloc and > domain_free > > From: Joerg Roedel <jroedel@xxxxxxx> > > Implement domain_alloc and domain_free iommu-ops as a replacement for > domain_init/domain_destroy. > > Signed-off-by: Joerg Roedel <jroedel@xxxxxxx> > --- > 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 ceebd28..1d45293 100644 > --- a/drivers/iommu/fsl_pamu_domain.c > +++ b/drivers/iommu/fsl_pamu_domain.c > @@ -33,6 +33,11 @@ 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) { > fsl_pamu_domain_cache = > kmem_cache_create("fsl_pamu_domain", > @@ -65,7 +70,7 @@ static phys_addr_t get_phys_addr(struct > fsl_dma_domain *dma_domain, dma_addr_t i > struct dma_window *win_ptr = &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"); @@ -123,7 +128,7 @@ 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); @@ -172,7 +177,7 @@ 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, > @@ -384,7 +389,7 @@ 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) @@ -398,11 +403,9 @@ > 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); > @@ -413,23 +416,24 @@ 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(unsigned 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 */ > @@ -499,7 +503,7 @@ 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; > > @@ -530,7 +534,7 @@ 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; > @@ -607,7 +611,7 @@ 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; > > @@ -653,7 +657,7 @@ 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; > @@ -691,7 +695,7 @@ 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; > @@ -723,7 +727,7 @@ 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; > > @@ -813,7 +817,7 @@ 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; > > switch (attr_type) { > @@ -838,7 +842,7 @@ 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; > > switch (attr_type) { > @@ -999,7 +1003,7 @@ 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; > > @@ -1048,15 +1052,15 @@ 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; > }; Acked-by: Varun Sethi <varun.sethi@xxxxxxxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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