[mirror_ubuntu-jammy-kernel.git] / arch / powerpc / include / asm / mmu-44x.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_POWERPC_MMU_44X_H_
#define _ASM_POWERPC_MMU_44X_H_
/*
 * PPC440 support
 */

#include <asm/page.h>

#define PPC44x_MMUCR_TID	0x000000ff
#define PPC44x_MMUCR_STS	0x00010000

#define	PPC44x_TLB_PAGEID	0
#define	PPC44x_TLB_XLAT		1
#define	PPC44x_TLB_ATTRIB	2

/* Page identification fields */
#define PPC44x_TLB_EPN_MASK	0xfffffc00      /* Effective Page Number */
#define	PPC44x_TLB_VALID	0x00000200      /* Valid flag */
#define PPC44x_TLB_TS		0x00000100	/* Translation address space */
#define PPC44x_TLB_1K		0x00000000	/* Page sizes */
#define PPC44x_TLB_4K		0x00000010
#define PPC44x_TLB_16K		0x00000020
#define PPC44x_TLB_64K		0x00000030
#define PPC44x_TLB_256K		0x00000040
#define PPC44x_TLB_1M		0x00000050
#define PPC44x_TLB_16M		0x00000070
#define	PPC44x_TLB_256M		0x00000090

/* Translation fields */
#define PPC44x_TLB_RPN_MASK	0xfffffc00      /* Real Page Number */
#define	PPC44x_TLB_ERPN_MASK	0x0000000f

/* Storage attribute and access control fields */
#define PPC44x_TLB_ATTR_MASK	0x0000ff80
#define PPC44x_TLB_U0		0x00008000      /* User 0 */
#define PPC44x_TLB_U1		0x00004000      /* User 1 */
#define PPC44x_TLB_U2		0x00002000      /* User 2 */
#define PPC44x_TLB_U3		0x00001000      /* User 3 */
#define PPC44x_TLB_W		0x00000800      /* Caching is write-through */
#define PPC44x_TLB_I		0x00000400      /* Caching is inhibited */
#define PPC44x_TLB_M		0x00000200      /* Memory is coherent */
#define PPC44x_TLB_G		0x00000100      /* Memory is guarded */
#define PPC44x_TLB_E		0x00000080      /* Memory is little endian */

#define PPC44x_TLB_PERM_MASK	0x0000003f
#define PPC44x_TLB_UX		0x00000020      /* User execution */
#define PPC44x_TLB_UW		0x00000010      /* User write */
#define PPC44x_TLB_UR		0x00000008      /* User read */
#define PPC44x_TLB_SX		0x00000004      /* Super execution */
#define PPC44x_TLB_SW		0x00000002      /* Super write */
#define PPC44x_TLB_SR		0x00000001      /* Super read */

/* Number of TLB entries */
#define PPC44x_TLB_SIZE		64

/* 47x bits */
#define PPC47x_MMUCR_TID	0x0000ffff
#define PPC47x_MMUCR_STS	0x00010000

/* Page identification fields */
#define PPC47x_TLB0_EPN_MASK	0xfffff000      /* Effective Page Number */
#define PPC47x_TLB0_VALID	0x00000800      /* Valid flag */
#define PPC47x_TLB0_TS		0x00000400	/* Translation address space */
#define PPC47x_TLB0_4K		0x00000000
#define PPC47x_TLB0_16K		0x00000010
#define PPC47x_TLB0_64K		0x00000030
#define PPC47x_TLB0_1M		0x00000070
#define PPC47x_TLB0_16M		0x000000f0
#define PPC47x_TLB0_256M	0x000001f0
#define PPC47x_TLB0_1G		0x000003f0
#define PPC47x_TLB0_BOLTED_R	0x00000008	/* tlbre only */

/* Translation fields */
#define PPC47x_TLB1_RPN_MASK	0xfffff000      /* Real Page Number */
#define PPC47x_TLB1_ERPN_MASK	0x000003ff

/* Storage attribute and access control fields */
#define PPC47x_TLB2_ATTR_MASK	0x0003ff80
#define PPC47x_TLB2_IL1I	0x00020000      /* Memory is guarded */
#define PPC47x_TLB2_IL1D	0x00010000      /* Memory is guarded */
#define PPC47x_TLB2_U0		0x00008000      /* User 0 */
#define PPC47x_TLB2_U1		0x00004000      /* User 1 */
#define PPC47x_TLB2_U2		0x00002000      /* User 2 */
#define PPC47x_TLB2_U3		0x00001000      /* User 3 */
#define PPC47x_TLB2_W		0x00000800      /* Caching is write-through */
#define PPC47x_TLB2_I		0x00000400      /* Caching is inhibited */
#define PPC47x_TLB2_M		0x00000200      /* Memory is coherent */
#define PPC47x_TLB2_G		0x00000100      /* Memory is guarded */
#define PPC47x_TLB2_E		0x00000080      /* Memory is little endian */
#define PPC47x_TLB2_PERM_MASK	0x0000003f
#define PPC47x_TLB2_UX		0x00000020      /* User execution */
#define PPC47x_TLB2_UW		0x00000010      /* User write */
#define PPC47x_TLB2_UR		0x00000008      /* User read */
#define PPC47x_TLB2_SX		0x00000004      /* Super execution */
#define PPC47x_TLB2_SW		0x00000002      /* Super write */
#define PPC47x_TLB2_SR		0x00000001      /* Super read */
#define PPC47x_TLB2_U_RWX	(PPC47x_TLB2_UX|PPC47x_TLB2_UW|PPC47x_TLB2_UR)
#define PPC47x_TLB2_S_RWX	(PPC47x_TLB2_SX|PPC47x_TLB2_SW|PPC47x_TLB2_SR)
#define PPC47x_TLB2_S_RW	(PPC47x_TLB2_SW | PPC47x_TLB2_SR)
#define PPC47x_TLB2_IMG		(PPC47x_TLB2_I | PPC47x_TLB2_M | PPC47x_TLB2_G)

#ifndef __ASSEMBLY__

extern unsigned int tlb_44x_hwater;
extern unsigned int tlb_44x_index;

typedef struct {
	unsigned int	id;
	unsigned int	active;
	unsigned long	vdso_base;
} mm_context_t;

#endif /* !__ASSEMBLY__ */

#ifndef CONFIG_PPC_EARLY_DEBUG_44x
#define PPC44x_EARLY_TLBS	1
#else
#define PPC44x_EARLY_TLBS	2
#define PPC44x_EARLY_DEBUG_VIRTADDR	(ASM_CONST(0xf0000000) \
	| (ASM_CONST(CONFIG_PPC_EARLY_DEBUG_44x_PHYSLOW) & 0xffff))
#endif

/* Size of the TLBs used for pinning in lowmem */
#define PPC_PIN_SIZE	(1 << 28)	/* 256M */

#if (PAGE_SHIFT == 12)
#define PPC44x_TLBE_SIZE	PPC44x_TLB_4K
#define PPC47x_TLBE_SIZE	PPC47x_TLB0_4K
#define mmu_virtual_psize	MMU_PAGE_4K
#elif (PAGE_SHIFT == 14)
#define PPC44x_TLBE_SIZE	PPC44x_TLB_16K
#define PPC47x_TLBE_SIZE	PPC47x_TLB0_16K
#define mmu_virtual_psize	MMU_PAGE_16K
#elif (PAGE_SHIFT == 16)
#define PPC44x_TLBE_SIZE	PPC44x_TLB_64K
#define PPC47x_TLBE_SIZE	PPC47x_TLB0_64K
#define mmu_virtual_psize	MMU_PAGE_64K
#elif (PAGE_SHIFT == 18)
#define PPC44x_TLBE_SIZE	PPC44x_TLB_256K
#define mmu_virtual_psize	MMU_PAGE_256K
#else
#error "Unsupported PAGE_SIZE"
#endif

#define mmu_linear_psize	MMU_PAGE_256M

#define PPC44x_PGD_OFF_SHIFT	(32 - PGDIR_SHIFT + PGD_T_LOG2)
#define PPC44x_PGD_OFF_MASK_BIT	(PGDIR_SHIFT - PGD_T_LOG2)
#define PPC44x_PTE_ADD_SHIFT	(32 - PGDIR_SHIFT + PTE_SHIFT + PTE_T_LOG2)
#define PPC44x_PTE_ADD_MASK_BIT	(32 - PTE_T_LOG2 - PTE_SHIFT)

#endif /* _ASM_POWERPC_MMU_44X_H_ */
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
57d7909e DG	2	#ifndef _ASM_POWERPC_MMU_44X_H_
	3	#define _ASM_POWERPC_MMU_44X_H_
	4	/*
	5	* PPC440 support
	6	*/
	7
ca9153a3 IY	8	#include <asm/page.h>
ca9153a3 IY	9
57d7909e DG	10	#define PPC44x_MMUCR_TID 0x000000ff
	11	#define PPC44x_MMUCR_STS 0x00010000
	12
	13	#define PPC44x_TLB_PAGEID 0
	14	#define PPC44x_TLB_XLAT 1
	15	#define PPC44x_TLB_ATTRIB 2
	16
	17	/* Page identification fields */
	18	#define PPC44x_TLB_EPN_MASK 0xfffffc00 /* Effective Page Number */
	19	#define PPC44x_TLB_VALID 0x00000200 /* Valid flag */
	20	#define PPC44x_TLB_TS 0x00000100 /* Translation address space */
	21	#define PPC44x_TLB_1K 0x00000000 /* Page sizes */
	22	#define PPC44x_TLB_4K 0x00000010
	23	#define PPC44x_TLB_16K 0x00000020
	24	#define PPC44x_TLB_64K 0x00000030
	25	#define PPC44x_TLB_256K 0x00000040
	26	#define PPC44x_TLB_1M 0x00000050
	27	#define PPC44x_TLB_16M 0x00000070
	28	#define PPC44x_TLB_256M 0x00000090
	29
	30	/* Translation fields */
	31	#define PPC44x_TLB_RPN_MASK 0xfffffc00 /* Real Page Number */
	32	#define PPC44x_TLB_ERPN_MASK 0x0000000f
	33
	34	/* Storage attribute and access control fields */
	35	#define PPC44x_TLB_ATTR_MASK 0x0000ff80
	36	#define PPC44x_TLB_U0 0x00008000 /* User 0 */
	37	#define PPC44x_TLB_U1 0x00004000 /* User 1 */
	38	#define PPC44x_TLB_U2 0x00002000 /* User 2 */
	39	#define PPC44x_TLB_U3 0x00001000 /* User 3 */
	40	#define PPC44x_TLB_W 0x00000800 /* Caching is write-through */
	41	#define PPC44x_TLB_I 0x00000400 /* Caching is inhibited */
	42	#define PPC44x_TLB_M 0x00000200 /* Memory is coherent */
	43	#define PPC44x_TLB_G 0x00000100 /* Memory is guarded */
e7f75ad0	44	#define PPC44x_TLB_E 0x00000080 /* Memory is little endian */
57d7909e DG	45
	46	#define PPC44x_TLB_PERM_MASK 0x0000003f
	47	#define PPC44x_TLB_UX 0x00000020 /* User execution */
	48	#define PPC44x_TLB_UW 0x00000010 /* User write */
	49	#define PPC44x_TLB_UR 0x00000008 /* User read */
	50	#define PPC44x_TLB_SX 0x00000004 /* Super execution */
	51	#define PPC44x_TLB_SW 0x00000002 /* Super write */
	52	#define PPC44x_TLB_SR 0x00000001 /* Super read */
	53
	54	/* Number of TLB entries */
	55	#define PPC44x_TLB_SIZE 64
	56
e7f75ad0 DK	57	/* 47x bits */
	58	#define PPC47x_MMUCR_TID 0x0000ffff
	59	#define PPC47x_MMUCR_STS 0x00010000
	60
	61	/* Page identification fields */
	62	#define PPC47x_TLB0_EPN_MASK 0xfffff000 /* Effective Page Number */
	63	#define PPC47x_TLB0_VALID 0x00000800 /* Valid flag */
	64	#define PPC47x_TLB0_TS 0x00000400 /* Translation address space */
	65	#define PPC47x_TLB0_4K 0x00000000
	66	#define PPC47x_TLB0_16K 0x00000010
	67	#define PPC47x_TLB0_64K 0x00000030
	68	#define PPC47x_TLB0_1M 0x00000070
	69	#define PPC47x_TLB0_16M 0x000000f0
	70	#define PPC47x_TLB0_256M 0x000001f0
	71	#define PPC47x_TLB0_1G 0x000003f0
	72	#define PPC47x_TLB0_BOLTED_R 0x00000008 /* tlbre only */
	73
	74	/* Translation fields */
	75	#define PPC47x_TLB1_RPN_MASK 0xfffff000 /* Real Page Number */
	76	#define PPC47x_TLB1_ERPN_MASK 0x000003ff
	77
	78	/* Storage attribute and access control fields */
	79	#define PPC47x_TLB2_ATTR_MASK 0x0003ff80
	80	#define PPC47x_TLB2_IL1I 0x00020000 /* Memory is guarded */
	81	#define PPC47x_TLB2_IL1D 0x00010000 /* Memory is guarded */
	82	#define PPC47x_TLB2_U0 0x00008000 /* User 0 */
	83	#define PPC47x_TLB2_U1 0x00004000 /* User 1 */
	84	#define PPC47x_TLB2_U2 0x00002000 /* User 2 */
	85	#define PPC47x_TLB2_U3 0x00001000 /* User 3 */
	86	#define PPC47x_TLB2_W 0x00000800 /* Caching is write-through */
	87	#define PPC47x_TLB2_I 0x00000400 /* Caching is inhibited */
	88	#define PPC47x_TLB2_M 0x00000200 /* Memory is coherent */
	89	#define PPC47x_TLB2_G 0x00000100 /* Memory is guarded */
	90	#define PPC47x_TLB2_E 0x00000080 /* Memory is little endian */
	91	#define PPC47x_TLB2_PERM_MASK 0x0000003f
	92	#define PPC47x_TLB2_UX 0x00000020 /* User execution */
	93	#define PPC47x_TLB2_UW 0x00000010 /* User write */
	94	#define PPC47x_TLB2_UR 0x00000008 /* User read */
	95	#define PPC47x_TLB2_SX 0x00000004 /* Super execution */
	96	#define PPC47x_TLB2_SW 0x00000002 /* Super write */
	97	#define PPC47x_TLB2_SR 0x00000001 /* Super read */
	98	#define PPC47x_TLB2_U_RWX (PPC47x_TLB2_UX\|PPC47x_TLB2_UW\|PPC47x_TLB2_UR)
	99	#define PPC47x_TLB2_S_RWX (PPC47x_TLB2_SX\|PPC47x_TLB2_SW\|PPC47x_TLB2_SR)
	100	#define PPC47x_TLB2_S_RW (PPC47x_TLB2_SW \| PPC47x_TLB2_SR)
	101	#define PPC47x_TLB2_IMG (PPC47x_TLB2_I \| PPC47x_TLB2_M \| PPC47x_TLB2_G)
	102
57d7909e DG	103	#ifndef __ASSEMBLY__
57d7909e DG	104
4baacfb0	105	extern unsigned int tlb_44x_hwater;
c0ca609c	106	extern unsigned int tlb_44x_index;
4baacfb0	107
57d7909e	108	typedef struct {
2ca8cf73 BH	109	unsigned int id;
	110	unsigned int active;
	111	unsigned long vdso_base;
57d7909e DG	112	} mm_context_t;
	113
	114	#endif /* !__ASSEMBLY__ */
	115
d9b55a03	116	#ifndef CONFIG_PPC_EARLY_DEBUG_44x
57d7909e	117	#define PPC44x_EARLY_TLBS 1
d9b55a03 DG	118	#else
	119	#define PPC44x_EARLY_TLBS 2
	120	#define PPC44x_EARLY_DEBUG_VIRTADDR (ASM_CONST(0xf0000000) \
	121	\| (ASM_CONST(CONFIG_PPC_EARLY_DEBUG_44x_PHYSLOW) & 0xffff))
	122	#endif
57d7909e DG	123
	124	/* Size of the TLBs used for pinning in lowmem */
	125	#define PPC_PIN_SIZE (1 << 28) /* 256M */
	126
ca9153a3 IY	127	#if (PAGE_SHIFT == 12)
ca9153a3 IY	128	#define PPC44x_TLBE_SIZE PPC44x_TLB_4K
e7f75ad0	129	#define PPC47x_TLBE_SIZE PPC47x_TLB0_4K
25d21ad6	130	#define mmu_virtual_psize MMU_PAGE_4K
ca9153a3 IY	131	#elif (PAGE_SHIFT == 14)
ca9153a3 IY	132	#define PPC44x_TLBE_SIZE PPC44x_TLB_16K
e7f75ad0	133	#define PPC47x_TLBE_SIZE PPC47x_TLB0_16K
25d21ad6	134	#define mmu_virtual_psize MMU_PAGE_16K
ca9153a3 IY	135	#elif (PAGE_SHIFT == 16)
ca9153a3 IY	136	#define PPC44x_TLBE_SIZE PPC44x_TLB_64K
e7f75ad0	137	#define PPC47x_TLBE_SIZE PPC47x_TLB0_64K
25d21ad6	138	#define mmu_virtual_psize MMU_PAGE_64K
e1240122 YT	139	#elif (PAGE_SHIFT == 18)
e1240122 YT	140	#define PPC44x_TLBE_SIZE PPC44x_TLB_256K
25d21ad6	141	#define mmu_virtual_psize MMU_PAGE_256K
ca9153a3 IY	142	#else
	143	#error "Unsupported PAGE_SIZE"
	144	#endif
	145
25d21ad6 BH	146	#define mmu_linear_psize MMU_PAGE_256M
25d21ad6 BH	147
ca9153a3 IY	148	#define PPC44x_PGD_OFF_SHIFT (32 - PGDIR_SHIFT + PGD_T_LOG2)
	149	#define PPC44x_PGD_OFF_MASK_BIT (PGDIR_SHIFT - PGD_T_LOG2)
	150	#define PPC44x_PTE_ADD_SHIFT (32 - PGDIR_SHIFT + PTE_SHIFT + PTE_T_LOG2)
	151	#define PPC44x_PTE_ADD_MASK_BIT (32 - PTE_T_LOG2 - PTE_SHIFT)
	152
57d7909e	153	#endif /* _ASM_POWERPC_MMU_44X_H_ */