Commit 0cfdc724 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu 

* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (33 commits)
  iommu/core: Remove global iommu_ops and register_iommu
  iommu/msm: Use bus_set_iommu instead of register_iommu
  iommu/omap: Use bus_set_iommu instead of register_iommu
  iommu/vt-d: Use bus_set_iommu instead of register_iommu
  iommu/amd: Use bus_set_iommu instead of register_iommu
  iommu/core: Use bus->iommu_ops in the iommu-api
  iommu/core: Convert iommu_found to iommu_present
  iommu/core: Add bus_type parameter to iommu_domain_alloc
  Driver core: Add iommu_ops to bus_type
  iommu/core: Define iommu_ops and register_iommu only with CONFIG_IOMMU_API
  iommu/amd: Fix wrong shift direction
  iommu/omap: always provide iommu debug code
  iommu/core: let drivers know if an iommu fault handler isn't installed
  iommu/core: export iommu_set_fault_handler()
  iommu/omap: Fix build error with !IOMMU_SUPPORT
  iommu/omap: Migrate to the generic fault report mechanism
  iommu/core: Add fault reporting mechanism
  iommu/core: Use PAGE_SIZE instead of hard-coded value
  iommu/core: use the existing IS_ALIGNED macro
  iommu/msm: ->unmap() should return order of unmapped page
  ...

Fixup trivial conflicts in drivers/iommu/Makefile: "move omap iommu to
dedicated iommu folder" vs "Rename the DMAR and INTR_REMAP config
options" just happened to touch lines next to each other.
parents b48aeab6 1abb4ba5

arch/arm/mach-omap2/iommu2.c

+17 −14
Original line number Diff line number Diff line
@@ -66,7 +66,7 @@ 
	 ((pgsz) == MMU_CAM_PGSZ_4K)  ? 0xfffff000 : 0)





static void __iommu_set_twl(struct iommu *obj, bool on)

static void __iommu_set_twl(struct omap_iommu *obj, bool on)

{

	u32 l = iommu_read_reg(obj, MMU_CNTL);
@@ -85,7 +85,7 @@ static void __iommu_set_twl(struct iommu *obj, bool on) 
}





static int omap2_iommu_enable(struct iommu *obj)

static int omap2_iommu_enable(struct omap_iommu *obj)

{

	u32 l, pa;

	unsigned long timeout;
@@ -127,7 +127,7 @@ static int omap2_iommu_enable(struct iommu *obj) 
	return 0;

}



static void omap2_iommu_disable(struct iommu *obj)

static void omap2_iommu_disable(struct omap_iommu *obj)

{

	u32 l = iommu_read_reg(obj, MMU_CNTL);
@@ -138,12 +138,12 @@ static void omap2_iommu_disable(struct iommu *obj) 
	dev_dbg(obj->dev, "%s is shutting down\n", obj->name);

}



static void omap2_iommu_set_twl(struct iommu *obj, bool on)

static void omap2_iommu_set_twl(struct omap_iommu *obj, bool on)

{

	__iommu_set_twl(obj, false);

}



static u32 omap2_iommu_fault_isr(struct iommu *obj, u32 *ra)

static u32 omap2_iommu_fault_isr(struct omap_iommu *obj, u32 *ra)

{

	u32 stat, da;

	u32 errs = 0;
@@ -173,13 +173,13 @@ static u32 omap2_iommu_fault_isr(struct iommu *obj, u32 *ra) 
	return errs;

}



static void omap2_tlb_read_cr(struct iommu *obj, struct cr_regs *cr)

static void omap2_tlb_read_cr(struct omap_iommu *obj, struct cr_regs *cr)

{

	cr->cam = iommu_read_reg(obj, MMU_READ_CAM);

	cr->ram = iommu_read_reg(obj, MMU_READ_RAM);

}



static void omap2_tlb_load_cr(struct iommu *obj, struct cr_regs *cr)

static void omap2_tlb_load_cr(struct omap_iommu *obj, struct cr_regs *cr)

{

	iommu_write_reg(obj, cr->cam | MMU_CAM_V, MMU_CAM);

	iommu_write_reg(obj, cr->ram, MMU_RAM);
@@ -193,7 +193,8 @@ static u32 omap2_cr_to_virt(struct cr_regs *cr) 
	return cr->cam & mask;

}



static struct cr_regs *omap2_alloc_cr(struct iommu *obj, struct iotlb_entry *e)

static struct cr_regs *omap2_alloc_cr(struct omap_iommu *obj,

						struct iotlb_entry *e)

{

	struct cr_regs *cr;
@@ -230,7 +231,8 @@ static u32 omap2_get_pte_attr(struct iotlb_entry *e) 
	return attr;

}



static ssize_t omap2_dump_cr(struct iommu *obj, struct cr_regs *cr, char *buf)

static ssize_t

omap2_dump_cr(struct omap_iommu *obj, struct cr_regs *cr, char *buf)

{

	char *p = buf;
@@ -254,7 +256,8 @@ static ssize_t omap2_dump_cr(struct iommu *obj, struct cr_regs *cr, char *buf) 
			goto out;					\

	} while (0)



static ssize_t omap2_iommu_dump_ctx(struct iommu *obj, char *buf, ssize_t len)

static ssize_t

omap2_iommu_dump_ctx(struct omap_iommu *obj, char *buf, ssize_t len)

{

	char *p = buf;
@@ -280,7 +283,7 @@ out: 
	return p - buf;

}



static void omap2_iommu_save_ctx(struct iommu *obj)

static void omap2_iommu_save_ctx(struct omap_iommu *obj)

{

	int i;

	u32 *p = obj->ctx;
@@ -293,7 +296,7 @@ static void omap2_iommu_save_ctx(struct iommu *obj) 
	BUG_ON(p[0] != IOMMU_ARCH_VERSION);

}



static void omap2_iommu_restore_ctx(struct iommu *obj)

static void omap2_iommu_restore_ctx(struct omap_iommu *obj)

{

	int i;

	u32 *p = obj->ctx;
@@ -343,13 +346,13 @@ static const struct iommu_functions omap2_iommu_ops = { 


static int __init omap2_iommu_init(void)

{

	return install_iommu_arch(&omap2_iommu_ops);

	return omap_install_iommu_arch(&omap2_iommu_ops);

}

module_init(omap2_iommu_init);



static void __exit omap2_iommu_exit(void)

{

	uninstall_iommu_arch(&omap2_iommu_ops);

	omap_uninstall_iommu_arch(&omap2_iommu_ops);

}

module_exit(omap2_iommu_exit);

arch/arm/plat-omap/Kconfig

+0 −12
Original line number Diff line number Diff line
@@ -134,18 +134,6 @@ config OMAP_MBOX_KFIFO_SIZE 
	  This can also be changed at runtime (via the mbox_kfifo_size

	  module parameter).



config OMAP_IOMMU

	tristate



config OMAP_IOMMU_DEBUG

       tristate "Export OMAP IOMMU internals in DebugFS"

       depends on OMAP_IOMMU && DEBUG_FS

       help

         Select this to see extensive information about

         the internal state of OMAP IOMMU in debugfs.



         Say N unless you know you need this.



config OMAP_IOMMU_IVA2

	bool

arch/arm/plat-omap/Makefile

+0 −2
Original line number Diff line number Diff line
@@ -18,8 +18,6 @@ obj-$(CONFIG_ARCH_OMAP3) += omap_device.o 
obj-$(CONFIG_ARCH_OMAP4) += omap_device.o



obj-$(CONFIG_OMAP_MCBSP) += mcbsp.o

obj-$(CONFIG_OMAP_IOMMU) += iommu.o iovmm.o

obj-$(CONFIG_OMAP_IOMMU_DEBUG) += iommu-debug.o



obj-$(CONFIG_CPU_FREQ) += cpu-omap.o

obj-$(CONFIG_OMAP_DM_TIMER) += dmtimer.o

arch/arm/plat-omap/include/plat/iommu.h

+35 −43
Original line number Diff line number Diff line
@@ -25,16 +25,17 @@ struct iotlb_entry { 
	};

};



struct iommu {

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;

	struct mutex	iommu_lock;	/* global for this whole object */

	spinlock_t	iommu_lock;	/* global for this whole object */



	/*

	 * We don't change iopgd for a situation like pgd for a task,
@@ -48,8 +49,6 @@ struct iommu { 
	struct list_head	mmap;

	struct mutex		mmap_lock; /* protect mmap */



	int (*isr)(struct iommu *obj, u32 da, u32 iommu_errs, void *priv);



	void *ctx; /* iommu context: registres saved area */

	u32 da_start;

	u32 da_end;
@@ -81,25 +80,27 @@ struct iotlb_lock { 
struct iommu_functions {

	unsigned long	version;



	int (*enable)(struct iommu *obj);

	void (*disable)(struct iommu *obj);

	void (*set_twl)(struct iommu *obj, bool on);

	u32 (*fault_isr)(struct iommu *obj, u32 *ra);

	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 iommu *obj, struct cr_regs *cr);

	void (*tlb_load_cr)(struct iommu *obj, struct cr_regs *cr);

	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 iommu *obj, struct iotlb_entry *e);

	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 iommu *obj, struct cr_regs *cr, char *buf);

	ssize_t (*dump_cr)(struct omap_iommu *obj, struct cr_regs *cr,

							char *buf);



	u32 (*get_pte_attr)(struct iotlb_entry *e);



	void (*save_ctx)(struct iommu *obj);

	void (*restore_ctx)(struct iommu *obj);

	ssize_t (*dump_ctx)(struct iommu *obj, char *buf, ssize_t len);

	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_platform_data {
@@ -150,40 +151,31 @@ struct iommu_platform_data { 
/*

 * global functions

 */

extern u32 iommu_arch_version(void);



extern void iotlb_cr_to_e(struct cr_regs *cr, struct iotlb_entry *e);

extern u32 iotlb_cr_to_virt(struct cr_regs *cr);



extern int load_iotlb_entry(struct iommu *obj, struct iotlb_entry *e);

extern void iommu_set_twl(struct iommu *obj, bool on);

extern void flush_iotlb_page(struct iommu *obj, u32 da);

extern void flush_iotlb_range(struct iommu *obj, u32 start, u32 end);

extern void flush_iotlb_all(struct iommu *obj);



extern int iopgtable_store_entry(struct iommu *obj, struct iotlb_entry *e);

extern void iopgtable_lookup_entry(struct iommu *obj, u32 da, u32 **ppgd,

				   u32 **ppte);

extern size_t iopgtable_clear_entry(struct iommu *obj, u32 iova);



extern int iommu_set_da_range(struct iommu *obj, u32 start, u32 end);

extern struct iommu *iommu_get(const char *name);

extern void iommu_put(struct iommu *obj);

extern int iommu_set_isr(const char *name,

			 int (*isr)(struct iommu *obj, u32 da, u32 iommu_errs,

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 void iommu_save_ctx(struct iommu *obj);

extern void iommu_restore_ctx(struct iommu *obj);

extern void omap_iommu_save_ctx(struct omap_iommu *obj);

extern void omap_iommu_restore_ctx(struct omap_iommu *obj);



extern int install_iommu_arch(const struct iommu_functions *ops);

extern void uninstall_iommu_arch(const struct iommu_functions *ops);

extern int omap_install_iommu_arch(const struct iommu_functions *ops);

extern void omap_uninstall_iommu_arch(const struct iommu_functions *ops);



extern int foreach_iommu_device(void *data,

extern int omap_foreach_iommu_device(void *data,

				int (*fn)(struct device *, void *));



extern ssize_t iommu_dump_ctx(struct iommu *obj, char *buf, ssize_t len);

extern size_t dump_tlb_entries(struct iommu *obj, char *buf, ssize_t len);

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);

struct device *omap_find_iommu_device(const char *name);



#endif /* __MACH_IOMMU_H */

arch/arm/plat-omap/include/plat/iommu2.h

+2 −2
Original line number Diff line number Diff line
@@ -83,12 +83,12 @@ 
/*

 * register accessors

 */

static inline u32 iommu_read_reg(struct iommu *obj, size_t offs)

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 iommu *obj, u32 val, size_t offs)

static inline void iommu_write_reg(struct omap_iommu *obj, u32 val, size_t offs)

{

	__raw_writel(val, obj->regbase + offs);

}

CRA Git | Maintained and supported by SUSTech CRA and CCSE