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-rw-r--r--arch/arm/plat-omap/include/plat/iommu.h31
1 files changed, 28 insertions, 3 deletions
diff --git a/arch/arm/plat-omap/include/plat/iommu.h b/arch/arm/plat-omap/include/plat/iommu.h
index a1d79ee19250..88be3e628b33 100644
--- a/arch/arm/plat-omap/include/plat/iommu.h
+++ b/arch/arm/plat-omap/include/plat/iommu.h
@@ -111,6 +111,32 @@ struct iommu_platform_data {
111 u32 da_end; 111 u32 da_end;
112}; 112};
113 113
114/**
115 * struct iommu_arch_data - omap iommu private data
116 * @name: name of the iommu device
117 * @iommu_dev: handle of the iommu device
118 *
119 * This is an omap iommu private data object, which binds an iommu user
120 * to its iommu device. This object should be placed at the iommu user's
121 * dev_archdata so generic IOMMU API can be used without having to
122 * utilize omap-specific plumbing anymore.
123 */
124struct omap_iommu_arch_data {
125 const char *name;
126 struct omap_iommu *iommu_dev;
127};
128
129/**
130 * dev_to_omap_iommu() - retrieves an omap iommu object from a user device
131 * @dev: iommu client device
132 */
133static inline struct omap_iommu *dev_to_omap_iommu(struct device *dev)
134{
135 struct omap_iommu_arch_data *arch_data = dev->archdata.iommu;
136
137 return arch_data->iommu_dev;
138}
139
114/* IOMMU errors */ 140/* IOMMU errors */
115#define OMAP_IOMMU_ERR_TLB_MISS (1 << 0) 141#define OMAP_IOMMU_ERR_TLB_MISS (1 << 0)
116#define OMAP_IOMMU_ERR_TRANS_FAULT (1 << 1) 142#define OMAP_IOMMU_ERR_TRANS_FAULT (1 << 1)
@@ -163,8 +189,8 @@ extern int omap_iommu_set_isr(const char *name,
163 void *priv), 189 void *priv),
164 void *isr_priv); 190 void *isr_priv);
165 191
166extern void omap_iommu_save_ctx(struct omap_iommu *obj); 192extern void omap_iommu_save_ctx(struct device *dev);
167extern void omap_iommu_restore_ctx(struct omap_iommu *obj); 193extern void omap_iommu_restore_ctx(struct device *dev);
168 194
169extern int omap_install_iommu_arch(const struct iommu_functions *ops); 195extern int omap_install_iommu_arch(const struct iommu_functions *ops);
170extern void omap_uninstall_iommu_arch(const struct iommu_functions *ops); 196extern void omap_uninstall_iommu_arch(const struct iommu_functions *ops);
@@ -176,6 +202,5 @@ extern ssize_t
176omap_iommu_dump_ctx(struct omap_iommu *obj, char *buf, ssize_t len); 202omap_iommu_dump_ctx(struct omap_iommu *obj, char *buf, ssize_t len);
177extern size_t 203extern size_t
178omap_dump_tlb_entries(struct omap_iommu *obj, char *buf, ssize_t len); 204omap_dump_tlb_entries(struct omap_iommu *obj, char *buf, ssize_t len);
179struct device *omap_find_iommu_device(const char *name);
180 205
181#endif /* __MACH_IOMMU_H */ 206#endif /* __MACH_IOMMU_H */