xref: /OK3568_Linux_fs/u-boot/arch/powerpc/include/asm/mmu.h (revision 4882a59341e53eb6f0b4789bf948001014eff981)
1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun  * PowerPC memory management structures
3*4882a593Smuzhiyun  */
4*4882a593Smuzhiyun 
5*4882a593Smuzhiyun #ifndef _PPC_MMU_H_
6*4882a593Smuzhiyun #define _PPC_MMU_H_
7*4882a593Smuzhiyun 
8*4882a593Smuzhiyun #ifndef __ASSEMBLY__
9*4882a593Smuzhiyun /* Hardware Page Table Entry */
10*4882a593Smuzhiyun typedef struct _PTE {
11*4882a593Smuzhiyun #ifdef CONFIG_PPC64BRIDGE
12*4882a593Smuzhiyun 	unsigned long long vsid:52;
13*4882a593Smuzhiyun 	unsigned long api:5;
14*4882a593Smuzhiyun 	unsigned long :5;
15*4882a593Smuzhiyun 	unsigned long h:1;
16*4882a593Smuzhiyun 	unsigned long v:1;
17*4882a593Smuzhiyun 	unsigned long long rpn:52;
18*4882a593Smuzhiyun #else /* CONFIG_PPC64BRIDGE */
19*4882a593Smuzhiyun 	unsigned long v:1;	/* Entry is valid */
20*4882a593Smuzhiyun 	unsigned long vsid:24;	/* Virtual segment identifier */
21*4882a593Smuzhiyun 	unsigned long h:1;	/* Hash algorithm indicator */
22*4882a593Smuzhiyun 	unsigned long api:6;	/* Abbreviated page index */
23*4882a593Smuzhiyun 	unsigned long rpn:20;	/* Real (physical) page number */
24*4882a593Smuzhiyun #endif /* CONFIG_PPC64BRIDGE */
25*4882a593Smuzhiyun 	unsigned long    :3;	/* Unused */
26*4882a593Smuzhiyun 	unsigned long r:1;	/* Referenced */
27*4882a593Smuzhiyun 	unsigned long c:1;	/* Changed */
28*4882a593Smuzhiyun 	unsigned long w:1;	/* Write-thru cache mode */
29*4882a593Smuzhiyun 	unsigned long i:1;	/* Cache inhibited */
30*4882a593Smuzhiyun 	unsigned long m:1;	/* Memory coherence */
31*4882a593Smuzhiyun 	unsigned long g:1;	/* Guarded */
32*4882a593Smuzhiyun 	unsigned long  :1;	/* Unused */
33*4882a593Smuzhiyun 	unsigned long pp:2;	/* Page protection */
34*4882a593Smuzhiyun } PTE;
35*4882a593Smuzhiyun 
36*4882a593Smuzhiyun /* Values for PP (assumes Ks=0, Kp=1) */
37*4882a593Smuzhiyun #define PP_RWXX	0	/* Supervisor read/write, User none */
38*4882a593Smuzhiyun #define PP_RWRX 1	/* Supervisor read/write, User read */
39*4882a593Smuzhiyun #define PP_RWRW 2	/* Supervisor read/write, User read/write */
40*4882a593Smuzhiyun #define PP_RXRX 3	/* Supervisor read,       User read */
41*4882a593Smuzhiyun 
42*4882a593Smuzhiyun /* Segment Register */
43*4882a593Smuzhiyun typedef struct _SEGREG {
44*4882a593Smuzhiyun 	unsigned long t:1;	/* Normal or I/O  type */
45*4882a593Smuzhiyun 	unsigned long ks:1;	/* Supervisor 'key' (normally 0) */
46*4882a593Smuzhiyun 	unsigned long kp:1;	/* User 'key' (normally 1) */
47*4882a593Smuzhiyun 	unsigned long n:1;	/* No-execute */
48*4882a593Smuzhiyun 	unsigned long :4;	/* Unused */
49*4882a593Smuzhiyun 	unsigned long vsid:24;	/* Virtual Segment Identifier */
50*4882a593Smuzhiyun } SEGREG;
51*4882a593Smuzhiyun 
52*4882a593Smuzhiyun /* Block Address Translation (BAT) Registers */
53*4882a593Smuzhiyun typedef struct _P601_BATU {	/* Upper part of BAT for 601 processor */
54*4882a593Smuzhiyun 	unsigned long bepi:15;	/* Effective page index (virtual address) */
55*4882a593Smuzhiyun 	unsigned long :8;	/* unused */
56*4882a593Smuzhiyun 	unsigned long w:1;
57*4882a593Smuzhiyun 	unsigned long i:1;	/* Cache inhibit */
58*4882a593Smuzhiyun 	unsigned long m:1;	/* Memory coherence */
59*4882a593Smuzhiyun 	unsigned long ks:1;	/* Supervisor key (normally 0) */
60*4882a593Smuzhiyun 	unsigned long kp:1;	/* User key (normally 1) */
61*4882a593Smuzhiyun 	unsigned long pp:2;	/* Page access protections */
62*4882a593Smuzhiyun } P601_BATU;
63*4882a593Smuzhiyun 
64*4882a593Smuzhiyun typedef struct _BATU {		/* Upper part of BAT (all except 601) */
65*4882a593Smuzhiyun #ifdef CONFIG_PPC64BRIDGE
66*4882a593Smuzhiyun 	unsigned long long bepi:47;
67*4882a593Smuzhiyun #else /* CONFIG_PPC64BRIDGE */
68*4882a593Smuzhiyun 	unsigned long bepi:15;	/* Effective page index (virtual address) */
69*4882a593Smuzhiyun #endif /* CONFIG_PPC64BRIDGE */
70*4882a593Smuzhiyun 	unsigned long :4;	/* Unused */
71*4882a593Smuzhiyun 	unsigned long bl:11;	/* Block size mask */
72*4882a593Smuzhiyun 	unsigned long vs:1;	/* Supervisor valid */
73*4882a593Smuzhiyun 	unsigned long vp:1;	/* User valid */
74*4882a593Smuzhiyun } BATU;
75*4882a593Smuzhiyun 
76*4882a593Smuzhiyun typedef struct _P601_BATL {	/* Lower part of BAT for 601 processor */
77*4882a593Smuzhiyun 	unsigned long brpn:15;	/* Real page index (physical address) */
78*4882a593Smuzhiyun 	unsigned long :10;	/* Unused */
79*4882a593Smuzhiyun 	unsigned long v:1;	/* Valid bit */
80*4882a593Smuzhiyun 	unsigned long bl:6;	/* Block size mask */
81*4882a593Smuzhiyun } P601_BATL;
82*4882a593Smuzhiyun 
83*4882a593Smuzhiyun typedef struct _BATL {		/* Lower part of BAT (all except 601) */
84*4882a593Smuzhiyun #ifdef CONFIG_PPC64BRIDGE
85*4882a593Smuzhiyun 	unsigned long long brpn:47;
86*4882a593Smuzhiyun #else /* CONFIG_PPC64BRIDGE */
87*4882a593Smuzhiyun 	unsigned long brpn:15;	/* Real page index (physical address) */
88*4882a593Smuzhiyun #endif /* CONFIG_PPC64BRIDGE */
89*4882a593Smuzhiyun 	unsigned long :10;	/* Unused */
90*4882a593Smuzhiyun 	unsigned long w:1;	/* Write-thru cache */
91*4882a593Smuzhiyun 	unsigned long i:1;	/* Cache inhibit */
92*4882a593Smuzhiyun 	unsigned long m:1;	/* Memory coherence */
93*4882a593Smuzhiyun 	unsigned long g:1;	/* Guarded (MBZ in IBAT) */
94*4882a593Smuzhiyun 	unsigned long :1;	/* Unused */
95*4882a593Smuzhiyun 	unsigned long pp:2;	/* Page access protections */
96*4882a593Smuzhiyun } BATL;
97*4882a593Smuzhiyun 
98*4882a593Smuzhiyun typedef struct _BAT {
99*4882a593Smuzhiyun 	BATU batu;		/* Upper register */
100*4882a593Smuzhiyun 	BATL batl;		/* Lower register */
101*4882a593Smuzhiyun } BAT;
102*4882a593Smuzhiyun 
103*4882a593Smuzhiyun typedef struct _P601_BAT {
104*4882a593Smuzhiyun 	P601_BATU batu;		/* Upper register */
105*4882a593Smuzhiyun 	P601_BATL batl;		/* Lower register */
106*4882a593Smuzhiyun } P601_BAT;
107*4882a593Smuzhiyun 
108*4882a593Smuzhiyun /*
109*4882a593Smuzhiyun  * Simulated two-level MMU.  This structure is used by the kernel
110*4882a593Smuzhiyun  * to keep track of MMU mappings and is used to update/maintain
111*4882a593Smuzhiyun  * the hardware HASH table which is really a cache of mappings.
112*4882a593Smuzhiyun  *
113*4882a593Smuzhiyun  * The simulated structures mimic the hardware available on other
114*4882a593Smuzhiyun  * platforms, notably the 80x86 and 680x0.
115*4882a593Smuzhiyun  */
116*4882a593Smuzhiyun 
117*4882a593Smuzhiyun typedef struct _pte {
118*4882a593Smuzhiyun 	unsigned long page_num:20;
119*4882a593Smuzhiyun 	unsigned long flags:12;		/* Page flags (some unused bits) */
120*4882a593Smuzhiyun } pte;
121*4882a593Smuzhiyun 
122*4882a593Smuzhiyun #define PD_SHIFT (10+12)		/* Page directory */
123*4882a593Smuzhiyun #define PD_MASK  0x02FF
124*4882a593Smuzhiyun #define PT_SHIFT (12)			/* Page Table */
125*4882a593Smuzhiyun #define PT_MASK  0x02FF
126*4882a593Smuzhiyun #define PG_SHIFT (12)			/* Page Entry */
127*4882a593Smuzhiyun 
128*4882a593Smuzhiyun 
129*4882a593Smuzhiyun /* MMU context */
130*4882a593Smuzhiyun 
131*4882a593Smuzhiyun typedef struct _MMU_context {
132*4882a593Smuzhiyun 	SEGREG	segs[16];	/* Segment registers */
133*4882a593Smuzhiyun 	pte	**pmap;		/* Two-level page-map structure */
134*4882a593Smuzhiyun } MMU_context;
135*4882a593Smuzhiyun 
136*4882a593Smuzhiyun extern void _tlbie(unsigned long va);	/* invalidate a TLB entry */
137*4882a593Smuzhiyun extern void _tlbia(void);		/* invalidate all TLB entries */
138*4882a593Smuzhiyun 
139*4882a593Smuzhiyun #ifdef CONFIG_ADDR_MAP
140*4882a593Smuzhiyun extern void init_addr_map(void);
141*4882a593Smuzhiyun #endif
142*4882a593Smuzhiyun 
143*4882a593Smuzhiyun typedef enum {
144*4882a593Smuzhiyun 	IBAT0 = 0, IBAT1, IBAT2, IBAT3,
145*4882a593Smuzhiyun 	DBAT0, DBAT1, DBAT2, DBAT3,
146*4882a593Smuzhiyun #ifdef CONFIG_HIGH_BATS
147*4882a593Smuzhiyun 	IBAT4, IBAT5, IBAT6, IBAT7,
148*4882a593Smuzhiyun 	DBAT4, DBAT5, DBAT6, DBAT7
149*4882a593Smuzhiyun #endif
150*4882a593Smuzhiyun } ppc_bat_t;
151*4882a593Smuzhiyun 
152*4882a593Smuzhiyun extern int read_bat(ppc_bat_t bat, unsigned long *upper, unsigned long *lower);
153*4882a593Smuzhiyun extern int write_bat(ppc_bat_t bat, unsigned long upper, unsigned long lower);
154*4882a593Smuzhiyun extern void print_bats(void);
155*4882a593Smuzhiyun 
156*4882a593Smuzhiyun #endif /* __ASSEMBLY__ */
157*4882a593Smuzhiyun 
158*4882a593Smuzhiyun #define BATU_VS                 0x00000002
159*4882a593Smuzhiyun #define BATU_VP                 0x00000001
160*4882a593Smuzhiyun #define BATU_INVALID            0x00000000
161*4882a593Smuzhiyun 
162*4882a593Smuzhiyun #define BATL_WRITETHROUGH       0x00000040
163*4882a593Smuzhiyun #define BATL_CACHEINHIBIT       0x00000020
164*4882a593Smuzhiyun #define BATL_MEMCOHERENCE	0x00000010
165*4882a593Smuzhiyun #define BATL_GUARDEDSTORAGE     0x00000008
166*4882a593Smuzhiyun #define BATL_NO_ACCESS		0x00000000
167*4882a593Smuzhiyun 
168*4882a593Smuzhiyun #define BATL_PP_MSK		0x00000003
169*4882a593Smuzhiyun #define BATL_PP_00		0x00000000 /* No access */
170*4882a593Smuzhiyun #define BATL_PP_01		0x00000001 /* Read-only */
171*4882a593Smuzhiyun #define BATL_PP_10		0x00000002 /* Read-write */
172*4882a593Smuzhiyun #define BATL_PP_11		0x00000003
173*4882a593Smuzhiyun 
174*4882a593Smuzhiyun #define BATL_PP_NO_ACCESS	BATL_PP_00
175*4882a593Smuzhiyun #define BATL_PP_RO		BATL_PP_01
176*4882a593Smuzhiyun #define BATL_PP_RW		BATL_PP_10
177*4882a593Smuzhiyun 
178*4882a593Smuzhiyun /* BAT Block size values */
179*4882a593Smuzhiyun #define BATU_BL_128K            0x00000000
180*4882a593Smuzhiyun #define BATU_BL_256K            0x00000004
181*4882a593Smuzhiyun #define BATU_BL_512K            0x0000000c
182*4882a593Smuzhiyun #define BATU_BL_1M              0x0000001c
183*4882a593Smuzhiyun #define BATU_BL_2M              0x0000003c
184*4882a593Smuzhiyun #define BATU_BL_4M              0x0000007c
185*4882a593Smuzhiyun #define BATU_BL_8M              0x000000fc
186*4882a593Smuzhiyun #define BATU_BL_16M             0x000001fc
187*4882a593Smuzhiyun #define BATU_BL_32M             0x000003fc
188*4882a593Smuzhiyun #define BATU_BL_64M             0x000007fc
189*4882a593Smuzhiyun #define BATU_BL_128M            0x00000ffc
190*4882a593Smuzhiyun #define BATU_BL_256M            0x00001ffc
191*4882a593Smuzhiyun 
192*4882a593Smuzhiyun /* Block lengths for processors that support extended block length */
193*4882a593Smuzhiyun #ifdef HID0_XBSEN
194*4882a593Smuzhiyun #define BATU_BL_512M            0x00003ffc
195*4882a593Smuzhiyun #define BATU_BL_1G              0x00007ffc
196*4882a593Smuzhiyun #define BATU_BL_2G              0x0000fffc
197*4882a593Smuzhiyun #define BATU_BL_4G              0x0001fffc
198*4882a593Smuzhiyun #define BATU_BL_MAX		BATU_BL_4G
199*4882a593Smuzhiyun #else
200*4882a593Smuzhiyun #define BATU_BL_MAX		BATU_BL_256M
201*4882a593Smuzhiyun #endif
202*4882a593Smuzhiyun 
203*4882a593Smuzhiyun /* BAT Access Protection */
204*4882a593Smuzhiyun #define BPP_XX	0x00		/* No access */
205*4882a593Smuzhiyun #define BPP_RX	0x01		/* Read only */
206*4882a593Smuzhiyun #define BPP_RW	0x02		/* Read/write */
207*4882a593Smuzhiyun 
208*4882a593Smuzhiyun /* Macros to get values from BATs, once data is in the BAT register format */
209*4882a593Smuzhiyun #define BATU_VALID(x) (x & 0x3)
210*4882a593Smuzhiyun #define BATU_VADDR(x) (x & 0xfffe0000)
211*4882a593Smuzhiyun #define BATL_PADDR(x) ((phys_addr_t)((x & 0xfffe0000)		\
212*4882a593Smuzhiyun 				     | ((x & 0x0e00ULL) << 24)	\
213*4882a593Smuzhiyun 				     | ((x & 0x04ULL) << 30)))
214*4882a593Smuzhiyun #define BATU_SIZE(x) (1ULL << (fls((x & BATU_BL_MAX) >> 2) + 17))
215*4882a593Smuzhiyun 
216*4882a593Smuzhiyun /* bytes into BATU_BL */
217*4882a593Smuzhiyun #define TO_BATU_BL(x) \
218*4882a593Smuzhiyun 	(u32)((((1ull << __ilog2_u64((u64)x)) / (128 * 1024)) - 1) * 4)
219*4882a593Smuzhiyun 
220*4882a593Smuzhiyun /* Used to set up SDR1 register */
221*4882a593Smuzhiyun #define HASH_TABLE_SIZE_64K	0x00010000
222*4882a593Smuzhiyun #define HASH_TABLE_SIZE_128K	0x00020000
223*4882a593Smuzhiyun #define HASH_TABLE_SIZE_256K	0x00040000
224*4882a593Smuzhiyun #define HASH_TABLE_SIZE_512K	0x00080000
225*4882a593Smuzhiyun #define HASH_TABLE_SIZE_1M	0x00100000
226*4882a593Smuzhiyun #define HASH_TABLE_SIZE_2M	0x00200000
227*4882a593Smuzhiyun #define HASH_TABLE_SIZE_4M	0x00400000
228*4882a593Smuzhiyun #define HASH_TABLE_MASK_64K	0x000
229*4882a593Smuzhiyun #define HASH_TABLE_MASK_128K	0x001
230*4882a593Smuzhiyun #define HASH_TABLE_MASK_256K	0x003
231*4882a593Smuzhiyun #define HASH_TABLE_MASK_512K	0x007
232*4882a593Smuzhiyun #define HASH_TABLE_MASK_1M	0x00F
233*4882a593Smuzhiyun #define HASH_TABLE_MASK_2M	0x01F
234*4882a593Smuzhiyun #define HASH_TABLE_MASK_4M	0x03F
235*4882a593Smuzhiyun 
236*4882a593Smuzhiyun /* Control/status registers for the MPC8xx.
237*4882a593Smuzhiyun  * A write operation to these registers causes serialized access.
238*4882a593Smuzhiyun  * During software tablewalk, the registers used perform mask/shift-add
239*4882a593Smuzhiyun  * operations when written/read.  A TLB entry is created when the Mx_RPN
240*4882a593Smuzhiyun  * is written, and the contents of several registers are used to
241*4882a593Smuzhiyun  * create the entry.
242*4882a593Smuzhiyun  */
243*4882a593Smuzhiyun #define MI_CTR		784	/* Instruction TLB control register */
244*4882a593Smuzhiyun #define MI_GPM		0x80000000	/* Set domain manager mode */
245*4882a593Smuzhiyun #define MI_PPM		0x40000000	/* Set subpage protection */
246*4882a593Smuzhiyun #define MI_CIDEF	0x20000000	/* Set cache inhibit when MMU dis */
247*4882a593Smuzhiyun #define MI_RSV4I	0x08000000	/* Reserve 4 TLB entries */
248*4882a593Smuzhiyun #define MI_PPCS		0x02000000	/* Use MI_RPN prob/priv state */
249*4882a593Smuzhiyun #define MI_IDXMASK	0x00001f00	/* TLB index to be loaded */
250*4882a593Smuzhiyun #define MI_RESETVAL	0x00000000	/* Value of register at reset */
251*4882a593Smuzhiyun 
252*4882a593Smuzhiyun /* These are the Ks and Kp from the PowerPC books.  For proper operation,
253*4882a593Smuzhiyun  * Ks = 0, Kp = 1.
254*4882a593Smuzhiyun  */
255*4882a593Smuzhiyun #define MI_AP		786
256*4882a593Smuzhiyun #define MI_Ks		0x80000000	/* Should not be set */
257*4882a593Smuzhiyun #define MI_Kp		0x40000000	/* Should always be set */
258*4882a593Smuzhiyun 
259*4882a593Smuzhiyun /* The effective page number register.  When read, contains the information
260*4882a593Smuzhiyun  * about the last instruction TLB miss.  When MI_RPN is written, bits in
261*4882a593Smuzhiyun  * this register are used to create the TLB entry.
262*4882a593Smuzhiyun  */
263*4882a593Smuzhiyun #define MI_EPN		787
264*4882a593Smuzhiyun #define MI_EPNMASK	0xfffff000	/* Effective page number for entry */
265*4882a593Smuzhiyun #define MI_EVALID	0x00000200	/* Entry is valid */
266*4882a593Smuzhiyun #define MI_ASIDMASK	0x0000000f	/* ASID match value */
267*4882a593Smuzhiyun 					/* Reset value is undefined */
268*4882a593Smuzhiyun 
269*4882a593Smuzhiyun /* A "level 1" or "segment" or whatever you want to call it register.
270*4882a593Smuzhiyun  * For the instruction TLB, it contains bits that get loaded into the
271*4882a593Smuzhiyun  * TLB entry when the MI_RPN is written.
272*4882a593Smuzhiyun  */
273*4882a593Smuzhiyun #define MI_TWC		789
274*4882a593Smuzhiyun #define MI_APG		0x000001e0	/* Access protection group (0) */
275*4882a593Smuzhiyun #define MI_GUARDED	0x00000010	/* Guarded storage */
276*4882a593Smuzhiyun #define MI_PSMASK	0x0000000c	/* Mask of page size bits */
277*4882a593Smuzhiyun #define MI_PS8MEG	0x0000000c	/* 8M page size */
278*4882a593Smuzhiyun #define MI_PS512K	0x00000004	/* 512K page size */
279*4882a593Smuzhiyun #define MI_PS4K_16K	0x00000000	/* 4K or 16K page size */
280*4882a593Smuzhiyun #define MI_SVALID	0x00000001	/* Segment entry is valid */
281*4882a593Smuzhiyun 					/* Reset value is undefined */
282*4882a593Smuzhiyun 
283*4882a593Smuzhiyun /* Real page number.  Defined by the pte.  Writing this register
284*4882a593Smuzhiyun  * causes a TLB entry to be created for the instruction TLB, using
285*4882a593Smuzhiyun  * additional information from the MI_EPN, and MI_TWC registers.
286*4882a593Smuzhiyun  */
287*4882a593Smuzhiyun #define MI_RPN		790
288*4882a593Smuzhiyun 
289*4882a593Smuzhiyun /* Define an RPN value for mapping kernel memory to large virtual
290*4882a593Smuzhiyun  * pages for boot initialization.  This has real page number of 0,
291*4882a593Smuzhiyun  * large page size, shared page, cache enabled, and valid.
292*4882a593Smuzhiyun  * Also mark all subpages valid and write access.
293*4882a593Smuzhiyun  */
294*4882a593Smuzhiyun #define MI_BOOTINIT	0x000001fd
295*4882a593Smuzhiyun 
296*4882a593Smuzhiyun #define MD_CTR		792	/* Data TLB control register */
297*4882a593Smuzhiyun #define MD_GPM		0x80000000	/* Set domain manager mode */
298*4882a593Smuzhiyun #define MD_PPM		0x40000000	/* Set subpage protection */
299*4882a593Smuzhiyun #define MD_CIDEF	0x20000000	/* Set cache inhibit when MMU dis */
300*4882a593Smuzhiyun #define MD_WTDEF	0x10000000	/* Set writethrough when MMU dis */
301*4882a593Smuzhiyun #define MD_RSV4I	0x08000000	/* Reserve 4 TLB entries */
302*4882a593Smuzhiyun #define MD_TWAM		0x04000000	/* Use 4K page hardware assist */
303*4882a593Smuzhiyun #define MD_PPCS		0x02000000	/* Use MI_RPN prob/priv state */
304*4882a593Smuzhiyun #define MD_IDXMASK	0x00001f00	/* TLB index to be loaded */
305*4882a593Smuzhiyun #define MD_RESETVAL	0x04000000	/* Value of register at reset */
306*4882a593Smuzhiyun 
307*4882a593Smuzhiyun #define M_CASID		793	/* Address space ID (context) to match */
308*4882a593Smuzhiyun #define MC_ASIDMASK	0x0000000f	/* Bits used for ASID value */
309*4882a593Smuzhiyun 
310*4882a593Smuzhiyun 
311*4882a593Smuzhiyun /* These are the Ks and Kp from the PowerPC books.  For proper operation,
312*4882a593Smuzhiyun  * Ks = 0, Kp = 1.
313*4882a593Smuzhiyun  */
314*4882a593Smuzhiyun #define MD_AP		794
315*4882a593Smuzhiyun #define MD_Ks		0x80000000	/* Should not be set */
316*4882a593Smuzhiyun #define MD_Kp		0x40000000	/* Should always be set */
317*4882a593Smuzhiyun 
318*4882a593Smuzhiyun /* The effective page number register.  When read, contains the information
319*4882a593Smuzhiyun  * about the last instruction TLB miss.  When MD_RPN is written, bits in
320*4882a593Smuzhiyun  * this register are used to create the TLB entry.
321*4882a593Smuzhiyun  */
322*4882a593Smuzhiyun #define MD_EPN		795
323*4882a593Smuzhiyun #define MD_EPNMASK	0xfffff000	/* Effective page number for entry */
324*4882a593Smuzhiyun #define MD_EVALID	0x00000200	/* Entry is valid */
325*4882a593Smuzhiyun #define MD_ASIDMASK	0x0000000f	/* ASID match value */
326*4882a593Smuzhiyun 					/* Reset value is undefined */
327*4882a593Smuzhiyun 
328*4882a593Smuzhiyun /* The pointer to the base address of the first level page table.
329*4882a593Smuzhiyun  * During a software tablewalk, reading this register provides the address
330*4882a593Smuzhiyun  * of the entry associated with MD_EPN.
331*4882a593Smuzhiyun  */
332*4882a593Smuzhiyun #define M_TWB		796
333*4882a593Smuzhiyun #define	M_L1TB		0xfffff000	/* Level 1 table base address */
334*4882a593Smuzhiyun #define M_L1INDX	0x00000ffc	/* Level 1 index, when read */
335*4882a593Smuzhiyun 					/* Reset value is undefined */
336*4882a593Smuzhiyun 
337*4882a593Smuzhiyun /* A "level 1" or "segment" or whatever you want to call it register.
338*4882a593Smuzhiyun  * For the data TLB, it contains bits that get loaded into the TLB entry
339*4882a593Smuzhiyun  * when the MD_RPN is written.  It is also provides the hardware assist
340*4882a593Smuzhiyun  * for finding the PTE address during software tablewalk.
341*4882a593Smuzhiyun  */
342*4882a593Smuzhiyun #define MD_TWC		797
343*4882a593Smuzhiyun #define MD_L2TB		0xfffff000	/* Level 2 table base address */
344*4882a593Smuzhiyun #define MD_L2INDX	0xfffffe00	/* Level 2 index (*pte), when read */
345*4882a593Smuzhiyun #define MD_APG		0x000001e0	/* Access protection group (0) */
346*4882a593Smuzhiyun #define MD_GUARDED	0x00000010	/* Guarded storage */
347*4882a593Smuzhiyun #define MD_PSMASK	0x0000000c	/* Mask of page size bits */
348*4882a593Smuzhiyun #define MD_PS8MEG	0x0000000c	/* 8M page size */
349*4882a593Smuzhiyun #define MD_PS512K	0x00000004	/* 512K page size */
350*4882a593Smuzhiyun #define MD_PS4K_16K	0x00000000	/* 4K or 16K page size */
351*4882a593Smuzhiyun #define MD_WT		0x00000002	/* Use writethrough page attribute */
352*4882a593Smuzhiyun #define MD_SVALID	0x00000001	/* Segment entry is valid */
353*4882a593Smuzhiyun 					/* Reset value is undefined */
354*4882a593Smuzhiyun 
355*4882a593Smuzhiyun 
356*4882a593Smuzhiyun /* Real page number.  Defined by the pte.  Writing this register
357*4882a593Smuzhiyun  * causes a TLB entry to be created for the data TLB, using
358*4882a593Smuzhiyun  * additional information from the MD_EPN, and MD_TWC registers.
359*4882a593Smuzhiyun  */
360*4882a593Smuzhiyun #define MD_RPN		798
361*4882a593Smuzhiyun 
362*4882a593Smuzhiyun /* This is a temporary storage register that could be used to save
363*4882a593Smuzhiyun  * a processor working register during a tablewalk.
364*4882a593Smuzhiyun  */
365*4882a593Smuzhiyun #define M_TW		799
366*4882a593Smuzhiyun 
367*4882a593Smuzhiyun /*
368*4882a593Smuzhiyun  * At present, all PowerPC 400-class processors share a similar TLB
369*4882a593Smuzhiyun  * architecture. The instruction and data sides share a unified,
370*4882a593Smuzhiyun  * 64-entry, fully-associative TLB which is maintained totally under
371*4882a593Smuzhiyun  * software control. In addition, the instruction side has a
372*4882a593Smuzhiyun  * hardware-managed, 4-entry, fully- associative TLB which serves as a
373*4882a593Smuzhiyun  * first level to the shared TLB. These two TLBs are known as the UTLB
374*4882a593Smuzhiyun  * and ITLB, respectively.
375*4882a593Smuzhiyun  */
376*4882a593Smuzhiyun 
377*4882a593Smuzhiyun #define        PPC4XX_TLB_SIZE 64
378*4882a593Smuzhiyun 
379*4882a593Smuzhiyun /*
380*4882a593Smuzhiyun  * TLB entries are defined by a "high" tag portion and a "low" data
381*4882a593Smuzhiyun  * portion.  On all architectures, the data portion is 32-bits.
382*4882a593Smuzhiyun  *
383*4882a593Smuzhiyun  * TLB entries are managed entirely under software control by reading,
384*4882a593Smuzhiyun  * writing, and searchoing using the 4xx-specific tlbre, tlbwr, and tlbsx
385*4882a593Smuzhiyun  * instructions.
386*4882a593Smuzhiyun  */
387*4882a593Smuzhiyun 
388*4882a593Smuzhiyun /*
389*4882a593Smuzhiyun  * FSL Book-E support
390*4882a593Smuzhiyun  */
391*4882a593Smuzhiyun 
392*4882a593Smuzhiyun #define MAS0_TLBSEL_MSK	0x30000000
393*4882a593Smuzhiyun #define MAS0_TLBSEL(x)	(((x) << 28) & MAS0_TLBSEL_MSK)
394*4882a593Smuzhiyun #define MAS0_ESEL_MSK	0x0FFF0000
395*4882a593Smuzhiyun #define MAS0_ESEL(x)	(((x) << 16) & MAS0_ESEL_MSK)
396*4882a593Smuzhiyun #define MAS0_NV(x)	((x) & 0x00000FFF)
397*4882a593Smuzhiyun 
398*4882a593Smuzhiyun #define MAS1_VALID	0x80000000
399*4882a593Smuzhiyun #define MAS1_IPROT	0x40000000
400*4882a593Smuzhiyun #define MAS1_TID(x)	(((x) << 16) & 0x3FFF0000)
401*4882a593Smuzhiyun #define MAS1_TS		0x00001000
402*4882a593Smuzhiyun #define MAS1_TSIZE(x)	(((x) << 7) & 0x00000F80)
403*4882a593Smuzhiyun #define TSIZE_TO_BYTES(x) (1ULL << ((x) + 10))
404*4882a593Smuzhiyun 
405*4882a593Smuzhiyun #define MAS2_EPN	0xFFFFF000
406*4882a593Smuzhiyun #define MAS2_X0		0x00000040
407*4882a593Smuzhiyun #define MAS2_X1		0x00000020
408*4882a593Smuzhiyun #define MAS2_W		0x00000010
409*4882a593Smuzhiyun #define MAS2_I		0x00000008
410*4882a593Smuzhiyun #define MAS2_M		0x00000004
411*4882a593Smuzhiyun #define MAS2_G		0x00000002
412*4882a593Smuzhiyun #define MAS2_E		0x00000001
413*4882a593Smuzhiyun 
414*4882a593Smuzhiyun #define MAS3_RPN	0xFFFFF000
415*4882a593Smuzhiyun #define MAS3_U0		0x00000200
416*4882a593Smuzhiyun #define MAS3_U1		0x00000100
417*4882a593Smuzhiyun #define MAS3_U2		0x00000080
418*4882a593Smuzhiyun #define MAS3_U3		0x00000040
419*4882a593Smuzhiyun #define MAS3_UX		0x00000020
420*4882a593Smuzhiyun #define MAS3_SX		0x00000010
421*4882a593Smuzhiyun #define MAS3_UW		0x00000008
422*4882a593Smuzhiyun #define MAS3_SW		0x00000004
423*4882a593Smuzhiyun #define MAS3_UR		0x00000002
424*4882a593Smuzhiyun #define MAS3_SR		0x00000001
425*4882a593Smuzhiyun 
426*4882a593Smuzhiyun #define MAS4_TLBSELD(x) MAS0_TLBSEL(x)
427*4882a593Smuzhiyun #define MAS4_TIDDSEL	0x000F0000
428*4882a593Smuzhiyun #define MAS4_TSIZED(x)	MAS1_TSIZE(x)
429*4882a593Smuzhiyun #define MAS4_X0D	0x00000040
430*4882a593Smuzhiyun #define MAS4_X1D	0x00000020
431*4882a593Smuzhiyun #define MAS4_WD		0x00000010
432*4882a593Smuzhiyun #define MAS4_ID		0x00000008
433*4882a593Smuzhiyun #define MAS4_MD		0x00000004
434*4882a593Smuzhiyun #define MAS4_GD		0x00000002
435*4882a593Smuzhiyun #define MAS4_ED		0x00000001
436*4882a593Smuzhiyun 
437*4882a593Smuzhiyun #define MAS6_SPID0	0x3FFF0000
438*4882a593Smuzhiyun #define MAS6_SPID1	0x00007FFE
439*4882a593Smuzhiyun #define MAS6_SAS	0x00000001
440*4882a593Smuzhiyun #define MAS6_SPID	MAS6_SPID0
441*4882a593Smuzhiyun 
442*4882a593Smuzhiyun #define MAS7_RPN	0xFFFFFFFF
443*4882a593Smuzhiyun 
444*4882a593Smuzhiyun #define FSL_BOOKE_MAS0(tlbsel,esel,nv) \
445*4882a593Smuzhiyun 		(MAS0_TLBSEL(tlbsel) | MAS0_ESEL(esel) | MAS0_NV(nv))
446*4882a593Smuzhiyun #define FSL_BOOKE_MAS1(v,iprot,tid,ts,tsize) \
447*4882a593Smuzhiyun 		((((v) << 31) & MAS1_VALID)             |\
448*4882a593Smuzhiyun 		(((iprot) << 30) & MAS1_IPROT)          |\
449*4882a593Smuzhiyun 		(MAS1_TID(tid))				|\
450*4882a593Smuzhiyun 		(((ts) << 12) & MAS1_TS)                |\
451*4882a593Smuzhiyun 		(MAS1_TSIZE(tsize)))
452*4882a593Smuzhiyun #define FSL_BOOKE_MAS2(epn, wimge) \
453*4882a593Smuzhiyun 		(((epn) & MAS3_RPN) | (wimge))
454*4882a593Smuzhiyun #define FSL_BOOKE_MAS3(rpn, user, perms) \
455*4882a593Smuzhiyun 		(((rpn) & MAS3_RPN) | (user) | (perms))
456*4882a593Smuzhiyun #define FSL_BOOKE_MAS7(rpn) \
457*4882a593Smuzhiyun 		(((u64)(rpn)) >> 32)
458*4882a593Smuzhiyun 
459*4882a593Smuzhiyun #define BOOKE_PAGESZ_1K		0
460*4882a593Smuzhiyun #define BOOKE_PAGESZ_2K		1
461*4882a593Smuzhiyun #define BOOKE_PAGESZ_4K		2
462*4882a593Smuzhiyun #define BOOKE_PAGESZ_8K		3
463*4882a593Smuzhiyun #define BOOKE_PAGESZ_16K	4
464*4882a593Smuzhiyun #define BOOKE_PAGESZ_32K	5
465*4882a593Smuzhiyun #define BOOKE_PAGESZ_64K	6
466*4882a593Smuzhiyun #define BOOKE_PAGESZ_128K	7
467*4882a593Smuzhiyun #define BOOKE_PAGESZ_256K	8
468*4882a593Smuzhiyun #define BOOKE_PAGESZ_512K	9
469*4882a593Smuzhiyun #define BOOKE_PAGESZ_1M		10
470*4882a593Smuzhiyun #define BOOKE_PAGESZ_2M		11
471*4882a593Smuzhiyun #define BOOKE_PAGESZ_4M		12
472*4882a593Smuzhiyun #define BOOKE_PAGESZ_8M		13
473*4882a593Smuzhiyun #define BOOKE_PAGESZ_16M	14
474*4882a593Smuzhiyun #define BOOKE_PAGESZ_32M	15
475*4882a593Smuzhiyun #define BOOKE_PAGESZ_64M	16
476*4882a593Smuzhiyun #define BOOKE_PAGESZ_128M	17
477*4882a593Smuzhiyun #define BOOKE_PAGESZ_256M	18
478*4882a593Smuzhiyun #define BOOKE_PAGESZ_512M	19
479*4882a593Smuzhiyun #define BOOKE_PAGESZ_1G		20
480*4882a593Smuzhiyun #define BOOKE_PAGESZ_2G		21
481*4882a593Smuzhiyun #define BOOKE_PAGESZ_4G		22
482*4882a593Smuzhiyun #define BOOKE_PAGESZ_8G		23
483*4882a593Smuzhiyun #define BOOKE_PAGESZ_16GB	24
484*4882a593Smuzhiyun #define BOOKE_PAGESZ_32GB	25
485*4882a593Smuzhiyun #define BOOKE_PAGESZ_64GB	26
486*4882a593Smuzhiyun #define BOOKE_PAGESZ_128GB	27
487*4882a593Smuzhiyun #define BOOKE_PAGESZ_256GB	28
488*4882a593Smuzhiyun #define BOOKE_PAGESZ_512GB	29
489*4882a593Smuzhiyun #define BOOKE_PAGESZ_1TB	30
490*4882a593Smuzhiyun #define BOOKE_PAGESZ_2TB	31
491*4882a593Smuzhiyun 
492*4882a593Smuzhiyun #define TLBIVAX_ALL		4
493*4882a593Smuzhiyun #define TLBIVAX_TLB0		0
494*4882a593Smuzhiyun #define TLBIVAX_TLB1		8
495*4882a593Smuzhiyun 
496*4882a593Smuzhiyun #ifdef CONFIG_E500
497*4882a593Smuzhiyun #ifndef __ASSEMBLY__
498*4882a593Smuzhiyun extern void set_tlb(u8 tlb, u32 epn, u64 rpn,
499*4882a593Smuzhiyun 		    u8 perms, u8 wimge,
500*4882a593Smuzhiyun 		    u8 ts, u8 esel, u8 tsize, u8 iprot);
501*4882a593Smuzhiyun extern void disable_tlb(u8 esel);
502*4882a593Smuzhiyun extern void invalidate_tlb(u8 tlb);
503*4882a593Smuzhiyun extern void init_tlbs(void);
504*4882a593Smuzhiyun extern int find_tlb_idx(void *addr, u8 tlbsel);
505*4882a593Smuzhiyun extern void init_used_tlb_cams(void);
506*4882a593Smuzhiyun extern int find_free_tlbcam(void);
507*4882a593Smuzhiyun extern void print_tlbcam(void);
508*4882a593Smuzhiyun 
509*4882a593Smuzhiyun extern unsigned int setup_ddr_tlbs(unsigned int memsize_in_meg);
510*4882a593Smuzhiyun extern void clear_ddr_tlbs(unsigned int memsize_in_meg);
511*4882a593Smuzhiyun 
512*4882a593Smuzhiyun enum tlb_map_type {
513*4882a593Smuzhiyun 	TLB_MAP_RAM,
514*4882a593Smuzhiyun 	TLB_MAP_IO,
515*4882a593Smuzhiyun };
516*4882a593Smuzhiyun 
517*4882a593Smuzhiyun extern uint64_t tlb_map_range(ulong v_addr, phys_addr_t p_addr, uint64_t size,
518*4882a593Smuzhiyun 			      enum tlb_map_type map_type);
519*4882a593Smuzhiyun 
520*4882a593Smuzhiyun extern void write_tlb(u32 _mas0, u32 _mas1, u32 _mas2, u32 _mas3, u32 _mas7);
521*4882a593Smuzhiyun 
522*4882a593Smuzhiyun #define SET_TLB_ENTRY(_tlb, _epn, _rpn, _perms, _wimge, _ts, _esel, _sz, _iprot) \
523*4882a593Smuzhiyun 	{ .mas0 = FSL_BOOKE_MAS0(_tlb, _esel, 0), \
524*4882a593Smuzhiyun 	  .mas1 = FSL_BOOKE_MAS1(1, _iprot, 0, _ts, _sz), \
525*4882a593Smuzhiyun 	  .mas2 = FSL_BOOKE_MAS2(_epn, _wimge), \
526*4882a593Smuzhiyun 	  .mas3 = FSL_BOOKE_MAS3(_rpn, 0, _perms), \
527*4882a593Smuzhiyun 	  .mas7 = FSL_BOOKE_MAS7(_rpn), }
528*4882a593Smuzhiyun 
529*4882a593Smuzhiyun struct fsl_e_tlb_entry {
530*4882a593Smuzhiyun 	u32	mas0;
531*4882a593Smuzhiyun 	u32	mas1;
532*4882a593Smuzhiyun 	u32	mas2;
533*4882a593Smuzhiyun 	u32	mas3;
534*4882a593Smuzhiyun 	u32	mas7;
535*4882a593Smuzhiyun };
536*4882a593Smuzhiyun 
537*4882a593Smuzhiyun extern struct fsl_e_tlb_entry tlb_table[];
538*4882a593Smuzhiyun extern int num_tlb_entries;
539*4882a593Smuzhiyun #endif
540*4882a593Smuzhiyun #endif
541*4882a593Smuzhiyun 
542*4882a593Smuzhiyun #ifdef CONFIG_E300
543*4882a593Smuzhiyun #define LAWAR_EN		0x80000000
544*4882a593Smuzhiyun #define LAWAR_SIZE		0x0000003F
545*4882a593Smuzhiyun 
546*4882a593Smuzhiyun #define LAWAR_TRGT_IF_PCI	0x00000000
547*4882a593Smuzhiyun #define LAWAR_TRGT_IF_PCI1	0x00000000
548*4882a593Smuzhiyun #define LAWAR_TRGT_IF_PCIX	0x00000000
549*4882a593Smuzhiyun #define LAWAR_TRGT_IF_PCI2	0x00100000
550*4882a593Smuzhiyun #define LAWAR_TRGT_IF_PCIE1	0x00200000
551*4882a593Smuzhiyun #define LAWAR_TRGT_IF_PCIE2	0x00100000
552*4882a593Smuzhiyun #define LAWAR_TRGT_IF_PCIE3	0x00300000
553*4882a593Smuzhiyun #define LAWAR_TRGT_IF_LBC	0x00400000
554*4882a593Smuzhiyun #define LAWAR_TRGT_IF_CCSR	0x00800000
555*4882a593Smuzhiyun #define LAWAR_TRGT_IF_DDR_INTERLEAVED 0x00B00000
556*4882a593Smuzhiyun #define LAWAR_TRGT_IF_RIO	0x00c00000
557*4882a593Smuzhiyun #define LAWAR_TRGT_IF_DDR	0x00f00000
558*4882a593Smuzhiyun #define LAWAR_TRGT_IF_DDR1	0x00f00000
559*4882a593Smuzhiyun #define LAWAR_TRGT_IF_DDR2	0x01600000
560*4882a593Smuzhiyun 
561*4882a593Smuzhiyun #define LAWAR_SIZE_BASE		0xa
562*4882a593Smuzhiyun #define LAWAR_SIZE_4K		(LAWAR_SIZE_BASE+1)
563*4882a593Smuzhiyun #define LAWAR_SIZE_8K		(LAWAR_SIZE_BASE+2)
564*4882a593Smuzhiyun #define LAWAR_SIZE_16K		(LAWAR_SIZE_BASE+3)
565*4882a593Smuzhiyun #define LAWAR_SIZE_32K		(LAWAR_SIZE_BASE+4)
566*4882a593Smuzhiyun #define LAWAR_SIZE_64K		(LAWAR_SIZE_BASE+5)
567*4882a593Smuzhiyun #define LAWAR_SIZE_128K		(LAWAR_SIZE_BASE+6)
568*4882a593Smuzhiyun #define LAWAR_SIZE_256K		(LAWAR_SIZE_BASE+7)
569*4882a593Smuzhiyun #define LAWAR_SIZE_512K		(LAWAR_SIZE_BASE+8)
570*4882a593Smuzhiyun #define LAWAR_SIZE_1M		(LAWAR_SIZE_BASE+9)
571*4882a593Smuzhiyun #define LAWAR_SIZE_2M		(LAWAR_SIZE_BASE+10)
572*4882a593Smuzhiyun #define LAWAR_SIZE_4M		(LAWAR_SIZE_BASE+11)
573*4882a593Smuzhiyun #define LAWAR_SIZE_8M		(LAWAR_SIZE_BASE+12)
574*4882a593Smuzhiyun #define LAWAR_SIZE_16M		(LAWAR_SIZE_BASE+13)
575*4882a593Smuzhiyun #define LAWAR_SIZE_32M		(LAWAR_SIZE_BASE+14)
576*4882a593Smuzhiyun #define LAWAR_SIZE_64M		(LAWAR_SIZE_BASE+15)
577*4882a593Smuzhiyun #define LAWAR_SIZE_128M		(LAWAR_SIZE_BASE+16)
578*4882a593Smuzhiyun #define LAWAR_SIZE_256M		(LAWAR_SIZE_BASE+17)
579*4882a593Smuzhiyun #define LAWAR_SIZE_512M		(LAWAR_SIZE_BASE+18)
580*4882a593Smuzhiyun #define LAWAR_SIZE_1G		(LAWAR_SIZE_BASE+19)
581*4882a593Smuzhiyun #define LAWAR_SIZE_2G		(LAWAR_SIZE_BASE+20)
582*4882a593Smuzhiyun #define LAWAR_SIZE_4G		(LAWAR_SIZE_BASE+21)
583*4882a593Smuzhiyun #define LAWAR_SIZE_8G		(LAWAR_SIZE_BASE+22)
584*4882a593Smuzhiyun #define LAWAR_SIZE_16G		(LAWAR_SIZE_BASE+23)
585*4882a593Smuzhiyun #define LAWAR_SIZE_32G		(LAWAR_SIZE_BASE+24)
586*4882a593Smuzhiyun #endif
587*4882a593Smuzhiyun 
588*4882a593Smuzhiyun #endif /* _PPC_MMU_H_ */
589