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authorTony Lindgren <tony@atomide.com>2012-11-02 12:24:06 -0700
committerTony Lindgren <tony@atomide.com>2012-11-20 10:04:41 -0800
commited1c7de29f9f3d56b3ca5ef69682cc1a3d369e9d (patch)
treecd61bc6adacd14f97d12e51f43171bf0b685727f /arch/arm/plat-omap/include
parentc8d35c84f5494d8d294205b598f927a11fd41f34 (diff)
downloadlinux-ed1c7de29f9f3d56b3ca5ef69682cc1a3d369e9d.tar.gz
ARM: OMAP2+: Move iommu2 to drivers/iommu/omap-iommu2.c
This file should not be in arch/arm. Move it to drivers/iommu to allow making most of the header local to drivers/iommu. This is needed as we are removing plat and mach includes from drivers for ARM common zImage support. Cc: Ido Yariv <ido@wizery.com> Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Cc: Mauro Carvalho Chehab <mchehab@infradead.org> Cc: Omar Ramirez Luna <omar.luna@linaro.org> Cc: linux-media@vger.kernel.org Acked-by: Ohad Ben-Cohen <ohad@wizery.com> Acked-by: Joerg Roedel <joro@8bytes.org> Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'arch/arm/plat-omap/include')
-rw-r--r--arch/arm/plat-omap/include/plat/iommu.h272
1 files changed, 14 insertions, 258 deletions
diff --git a/arch/arm/plat-omap/include/plat/iommu.h b/arch/arm/plat-omap/include/plat/iommu.h
index a4b71b14975..c677b9f2fef 100644
--- a/arch/arm/plat-omap/include/plat/iommu.h
+++ b/arch/arm/plat-omap/include/plat/iommu.h
@@ -10,103 +10,21 @@
* published by the Free Software Foundation.
*/
-#ifndef __MACH_IOMMU_H
-#define __MACH_IOMMU_H
-
-#include <linux/io.h>
-
-#if defined(CONFIG_ARCH_OMAP1)
-#error "iommu for this processor not implemented yet"
-#endif
-
-struct iotlb_entry {
- u32 da;
- u32 pa;
- u32 pgsz, prsvd, valid;
- union {
- u16 ap;
- struct {
- u32 endian, elsz, mixed;
- };
- };
-};
-
-struct omap_iommu {
- const char *name;
- struct module *owner;
- struct clk *clk;
- void __iomem *regbase;
- struct device *dev;
- void *isr_priv;
- struct iommu_domain *domain;
-
- unsigned int refcount;
- spinlock_t iommu_lock; /* global for this whole object */
-
- /*
- * We don't change iopgd for a situation like pgd for a task,
- * but share it globally for each iommu.
- */
- u32 *iopgd;
- spinlock_t page_table_lock; /* protect iopgd */
-
- int nr_tlb_entries;
-
- struct list_head mmap;
- struct mutex mmap_lock; /* protect mmap */
-
- void *ctx; /* iommu context: registres saved area */
- u32 da_start;
- u32 da_end;
-};
-
-struct cr_regs {
- union {
- struct {
- u16 cam_l;
- u16 cam_h;
- };
- u32 cam;
- };
- union {
- struct {
- u16 ram_l;
- u16 ram_h;
- };
- u32 ram;
- };
-};
-
-struct iotlb_lock {
- short base;
- short vict;
-};
-
-/* architecture specific functions */
-struct iommu_functions {
- unsigned long version;
-
- int (*enable)(struct omap_iommu *obj);
- void (*disable)(struct omap_iommu *obj);
- void (*set_twl)(struct omap_iommu *obj, bool on);
- u32 (*fault_isr)(struct omap_iommu *obj, u32 *ra);
-
- void (*tlb_read_cr)(struct omap_iommu *obj, struct cr_regs *cr);
- void (*tlb_load_cr)(struct omap_iommu *obj, struct cr_regs *cr);
-
- struct cr_regs *(*alloc_cr)(struct omap_iommu *obj,
- struct iotlb_entry *e);
- int (*cr_valid)(struct cr_regs *cr);
- u32 (*cr_to_virt)(struct cr_regs *cr);
- void (*cr_to_e)(struct cr_regs *cr, struct iotlb_entry *e);
- ssize_t (*dump_cr)(struct omap_iommu *obj, struct cr_regs *cr,
- char *buf);
-
- u32 (*get_pte_attr)(struct iotlb_entry *e);
+#define MMU_REG_SIZE 256
- void (*save_ctx)(struct omap_iommu *obj);
- void (*restore_ctx)(struct omap_iommu *obj);
- ssize_t (*dump_ctx)(struct omap_iommu *obj, char *buf, ssize_t len);
+/**
+ * struct iommu_arch_data - omap iommu private data
+ * @name: name of the iommu device
+ * @iommu_dev: handle of the iommu device
+ *
+ * This is an omap iommu private data object, which binds an iommu user
+ * to its iommu device. This object should be placed at the iommu user's
+ * dev_archdata so generic IOMMU API can be used without having to
+ * utilize omap-specific plumbing anymore.
+ */
+struct omap_iommu_arch_data {
+ const char *name;
+ struct omap_iommu *iommu_dev;
};
/**
@@ -129,165 +47,3 @@ struct iommu_platform_data {
u32 da_start;
u32 da_end;
};
-
-/**
- * struct iommu_arch_data - omap iommu private data
- * @name: name of the iommu device
- * @iommu_dev: handle of the iommu device
- *
- * This is an omap iommu private data object, which binds an iommu user
- * to its iommu device. This object should be placed at the iommu user's
- * dev_archdata so generic IOMMU API can be used without having to
- * utilize omap-specific plumbing anymore.
- */
-struct omap_iommu_arch_data {
- const char *name;
- struct omap_iommu *iommu_dev;
-};
-
-#ifdef CONFIG_IOMMU_API
-/**
- * dev_to_omap_iommu() - retrieves an omap iommu object from a user device
- * @dev: iommu client device
- */
-static inline struct omap_iommu *dev_to_omap_iommu(struct device *dev)
-{
- struct omap_iommu_arch_data *arch_data = dev->archdata.iommu;
-
- return arch_data->iommu_dev;
-}
-#endif
-
-/* IOMMU errors */
-#define OMAP_IOMMU_ERR_TLB_MISS (1 << 0)
-#define OMAP_IOMMU_ERR_TRANS_FAULT (1 << 1)
-#define OMAP_IOMMU_ERR_EMU_MISS (1 << 2)
-#define OMAP_IOMMU_ERR_TBLWALK_FAULT (1 << 3)
-#define OMAP_IOMMU_ERR_MULTIHIT_FAULT (1 << 4)
-
-/*
- * MMU Register offsets
- */
-#define MMU_REVISION 0x00
-#define MMU_SYSCONFIG 0x10
-#define MMU_SYSSTATUS 0x14
-#define MMU_IRQSTATUS 0x18
-#define MMU_IRQENABLE 0x1c
-#define MMU_WALKING_ST 0x40
-#define MMU_CNTL 0x44
-#define MMU_FAULT_AD 0x48
-#define MMU_TTB 0x4c
-#define MMU_LOCK 0x50
-#define MMU_LD_TLB 0x54
-#define MMU_CAM 0x58
-#define MMU_RAM 0x5c
-#define MMU_GFLUSH 0x60
-#define MMU_FLUSH_ENTRY 0x64
-#define MMU_READ_CAM 0x68
-#define MMU_READ_RAM 0x6c
-#define MMU_EMU_FAULT_AD 0x70
-
-#define MMU_REG_SIZE 256
-
-/*
- * MMU Register bit definitions
- */
-#define MMU_LOCK_BASE_SHIFT 10
-#define MMU_LOCK_BASE_MASK (0x1f << MMU_LOCK_BASE_SHIFT)
-#define MMU_LOCK_BASE(x) \
- ((x & MMU_LOCK_BASE_MASK) >> MMU_LOCK_BASE_SHIFT)
-
-#define MMU_LOCK_VICT_SHIFT 4
-#define MMU_LOCK_VICT_MASK (0x1f << MMU_LOCK_VICT_SHIFT)
-#define MMU_LOCK_VICT(x) \
- ((x & MMU_LOCK_VICT_MASK) >> MMU_LOCK_VICT_SHIFT)
-
-#define MMU_CAM_VATAG_SHIFT 12
-#define MMU_CAM_VATAG_MASK \
- ((~0UL >> MMU_CAM_VATAG_SHIFT) << MMU_CAM_VATAG_SHIFT)
-#define MMU_CAM_P (1 << 3)
-#define MMU_CAM_V (1 << 2)
-#define MMU_CAM_PGSZ_MASK 3
-#define MMU_CAM_PGSZ_1M (0 << 0)
-#define MMU_CAM_PGSZ_64K (1 << 0)
-#define MMU_CAM_PGSZ_4K (2 << 0)
-#define MMU_CAM_PGSZ_16M (3 << 0)
-
-#define MMU_RAM_PADDR_SHIFT 12
-#define MMU_RAM_PADDR_MASK \
- ((~0UL >> MMU_RAM_PADDR_SHIFT) << MMU_RAM_PADDR_SHIFT)
-
-#define MMU_RAM_ENDIAN_MASK (1 << MMU_RAM_ENDIAN_SHIFT)
-#define MMU_RAM_ELSZ_MASK (3 << MMU_RAM_ELSZ_SHIFT)
-
-#define MMU_RAM_ELSZ_16 (1 << MMU_RAM_ELSZ_SHIFT)
-#define MMU_RAM_ELSZ_32 (2 << MMU_RAM_ELSZ_SHIFT)
-#define MMU_RAM_ELSZ_NONE (3 << MMU_RAM_ELSZ_SHIFT)
-#define MMU_RAM_MIXED_SHIFT 6
-#define MMU_RAM_MIXED_MASK (1 << MMU_RAM_MIXED_SHIFT)
-#define MMU_RAM_MIXED MMU_RAM_MIXED_MASK
-
-/*
- * utilities for super page(16MB, 1MB, 64KB and 4KB)
- */
-
-#define iopgsz_max(bytes) \
- (((bytes) >= SZ_16M) ? SZ_16M : \
- ((bytes) >= SZ_1M) ? SZ_1M : \
- ((bytes) >= SZ_64K) ? SZ_64K : \
- ((bytes) >= SZ_4K) ? SZ_4K : 0)
-
-#define bytes_to_iopgsz(bytes) \
- (((bytes) == SZ_16M) ? MMU_CAM_PGSZ_16M : \
- ((bytes) == SZ_1M) ? MMU_CAM_PGSZ_1M : \
- ((bytes) == SZ_64K) ? MMU_CAM_PGSZ_64K : \
- ((bytes) == SZ_4K) ? MMU_CAM_PGSZ_4K : -1)
-
-#define iopgsz_to_bytes(iopgsz) \
- (((iopgsz) == MMU_CAM_PGSZ_16M) ? SZ_16M : \
- ((iopgsz) == MMU_CAM_PGSZ_1M) ? SZ_1M : \
- ((iopgsz) == MMU_CAM_PGSZ_64K) ? SZ_64K : \
- ((iopgsz) == MMU_CAM_PGSZ_4K) ? SZ_4K : 0)
-
-#define iopgsz_ok(bytes) (bytes_to_iopgsz(bytes) >= 0)
-
-/*
- * global functions
- */
-extern u32 omap_iommu_arch_version(void);
-
-extern void omap_iotlb_cr_to_e(struct cr_regs *cr, struct iotlb_entry *e);
-
-extern int
-omap_iopgtable_store_entry(struct omap_iommu *obj, struct iotlb_entry *e);
-
-extern int omap_iommu_set_isr(const char *name,
- int (*isr)(struct omap_iommu *obj, u32 da, u32 iommu_errs,
- void *priv),
- void *isr_priv);
-
-extern int omap_install_iommu_arch(const struct iommu_functions *ops);
-extern void omap_uninstall_iommu_arch(const struct iommu_functions *ops);
-
-extern int omap_foreach_iommu_device(void *data,
- int (*fn)(struct device *, void *));
-
-extern ssize_t
-omap_iommu_dump_ctx(struct omap_iommu *obj, char *buf, ssize_t len);
-extern size_t
-omap_dump_tlb_entries(struct omap_iommu *obj, char *buf, ssize_t len);
-
-/*
- * register accessors
- */
-static inline u32 iommu_read_reg(struct omap_iommu *obj, size_t offs)
-{
- return __raw_readl(obj->regbase + offs);
-}
-
-static inline void iommu_write_reg(struct omap_iommu *obj, u32 val, size_t offs)
-{
- __raw_writel(val, obj->regbase + offs);
-}
-
-#endif /* __MACH_IOMMU_H */