2 * PowerPC memory management structures
13 * Define physical address type. Machines using split size
14 * virtual/physical addressing like 32-bit virtual / 36-bit
15 * physical need a larger than native word size type. -Matt
17 #ifndef CONFIG_PHYS_64BIT
18 #define PHYS_FMT "%.8lx"
20 extern phys_addr_t fixup_bigphys_addr(phys_addr_t, phys_addr_t);
21 #define PHYS_FMT "%16Lx"
26 unsigned long vdso_base;
29 /* Hardware Page Table Entry */
31 unsigned long v:1; /* Entry is valid */
32 unsigned long vsid:24; /* Virtual segment identifier */
33 unsigned long h:1; /* Hash algorithm indicator */
34 unsigned long api:6; /* Abbreviated page index */
35 unsigned long rpn:20; /* Real (physical) page number */
36 unsigned long :3; /* Unused */
37 unsigned long r:1; /* Referenced */
38 unsigned long c:1; /* Changed */
39 unsigned long w:1; /* Write-thru cache mode */
40 unsigned long i:1; /* Cache inhibited */
41 unsigned long m:1; /* Memory coherence */
42 unsigned long g:1; /* Guarded */
43 unsigned long :1; /* Unused */
44 unsigned long pp:2; /* Page protection */
47 /* Values for PP (assumes Ks=0, Kp=1) */
48 #define PP_RWXX 0 /* Supervisor read/write, User none */
49 #define PP_RWRX 1 /* Supervisor read/write, User read */
50 #define PP_RWRW 2 /* Supervisor read/write, User read/write */
51 #define PP_RXRX 3 /* Supervisor read, User read */
53 /* Segment Register */
54 typedef struct _SEGREG {
55 unsigned long t:1; /* Normal or I/O type */
56 unsigned long ks:1; /* Supervisor 'key' (normally 0) */
57 unsigned long kp:1; /* User 'key' (normally 1) */
58 unsigned long n:1; /* No-execute */
59 unsigned long :4; /* Unused */
60 unsigned long vsid:24; /* Virtual Segment Identifier */
63 /* Block Address Translation (BAT) Registers */
64 typedef struct _P601_BATU { /* Upper part of BAT for 601 processor */
65 unsigned long bepi:15; /* Effective page index (virtual address) */
66 unsigned long :8; /* unused */
68 unsigned long i:1; /* Cache inhibit */
69 unsigned long m:1; /* Memory coherence */
70 unsigned long ks:1; /* Supervisor key (normally 0) */
71 unsigned long kp:1; /* User key (normally 1) */
72 unsigned long pp:2; /* Page access protections */
75 typedef struct _BATU { /* Upper part of BAT (all except 601) */
76 unsigned long bepi:15; /* Effective page index (virtual address) */
77 unsigned long :4; /* Unused */
78 unsigned long bl:11; /* Block size mask */
79 unsigned long vs:1; /* Supervisor valid */
80 unsigned long vp:1; /* User valid */
83 typedef struct _P601_BATL { /* Lower part of BAT for 601 processor */
84 unsigned long brpn:15; /* Real page index (physical address) */
85 unsigned long :10; /* Unused */
86 unsigned long v:1; /* Valid bit */
87 unsigned long bl:6; /* Block size mask */
90 typedef struct _BATL { /* Lower part of BAT (all except 601) */
91 unsigned long brpn:15; /* Real page index (physical address) */
92 unsigned long :10; /* Unused */
93 unsigned long w:1; /* Write-thru cache */
94 unsigned long i:1; /* Cache inhibit */
95 unsigned long m:1; /* Memory coherence */
96 unsigned long g:1; /* Guarded (MBZ in IBAT) */
97 unsigned long :1; /* Unused */
98 unsigned long pp:2; /* Page access protections */
101 typedef struct _BAT {
102 BATU batu; /* Upper register */
103 BATL batl; /* Lower register */
106 typedef struct _P601_BAT {
107 P601_BATU batu; /* Upper register */
108 P601_BATL batl; /* Lower register */
111 #endif /* __ASSEMBLY__ */
113 /* Block size masks */
114 #define BL_128K 0x000
115 #define BL_256K 0x001
116 #define BL_512K 0x003
124 #define BL_128M 0x3FF
125 #define BL_256M 0x7FF
127 /* BAT Access Protection */
128 #define BPP_XX 0x00 /* No access */
129 #define BPP_RX 0x01 /* Read only */
130 #define BPP_RW 0x02 /* Read/write */
132 /* Control/status registers for the MPC8xx.
133 * A write operation to these registers causes serialized access.
134 * During software tablewalk, the registers used perform mask/shift-add
135 * operations when written/read. A TLB entry is created when the Mx_RPN
136 * is written, and the contents of several registers are used to
139 #define SPRN_MI_CTR 784 /* Instruction TLB control register */
140 #define MI_GPM 0x80000000 /* Set domain manager mode */
141 #define MI_PPM 0x40000000 /* Set subpage protection */
142 #define MI_CIDEF 0x20000000 /* Set cache inhibit when MMU dis */
143 #define MI_RSV4I 0x08000000 /* Reserve 4 TLB entries */
144 #define MI_PPCS 0x02000000 /* Use MI_RPN prob/priv state */
145 #define MI_IDXMASK 0x00001f00 /* TLB index to be loaded */
146 #define MI_RESETVAL 0x00000000 /* Value of register at reset */
148 /* These are the Ks and Kp from the PowerPC books. For proper operation,
151 #define SPRN_MI_AP 786
152 #define MI_Ks 0x80000000 /* Should not be set */
153 #define MI_Kp 0x40000000 /* Should always be set */
155 /* The effective page number register. When read, contains the information
156 * about the last instruction TLB miss. When MI_RPN is written, bits in
157 * this register are used to create the TLB entry.
159 #define SPRN_MI_EPN 787
160 #define MI_EPNMASK 0xfffff000 /* Effective page number for entry */
161 #define MI_EVALID 0x00000200 /* Entry is valid */
162 #define MI_ASIDMASK 0x0000000f /* ASID match value */
163 /* Reset value is undefined */
165 /* A "level 1" or "segment" or whatever you want to call it register.
166 * For the instruction TLB, it contains bits that get loaded into the
167 * TLB entry when the MI_RPN is written.
169 #define SPRN_MI_TWC 789
170 #define MI_APG 0x000001e0 /* Access protection group (0) */
171 #define MI_GUARDED 0x00000010 /* Guarded storage */
172 #define MI_PSMASK 0x0000000c /* Mask of page size bits */
173 #define MI_PS8MEG 0x0000000c /* 8M page size */
174 #define MI_PS512K 0x00000004 /* 512K page size */
175 #define MI_PS4K_16K 0x00000000 /* 4K or 16K page size */
176 #define MI_SVALID 0x00000001 /* Segment entry is valid */
177 /* Reset value is undefined */
179 /* Real page number. Defined by the pte. Writing this register
180 * causes a TLB entry to be created for the instruction TLB, using
181 * additional information from the MI_EPN, and MI_TWC registers.
183 #define SPRN_MI_RPN 790
185 /* Define an RPN value for mapping kernel memory to large virtual
186 * pages for boot initialization. This has real page number of 0,
187 * large page size, shared page, cache enabled, and valid.
188 * Also mark all subpages valid and write access.
190 #define MI_BOOTINIT 0x000001fd
192 #define SPRN_MD_CTR 792 /* Data TLB control register */
193 #define MD_GPM 0x80000000 /* Set domain manager mode */
194 #define MD_PPM 0x40000000 /* Set subpage protection */
195 #define MD_CIDEF 0x20000000 /* Set cache inhibit when MMU dis */
196 #define MD_WTDEF 0x10000000 /* Set writethrough when MMU dis */
197 #define MD_RSV4I 0x08000000 /* Reserve 4 TLB entries */
198 #define MD_TWAM 0x04000000 /* Use 4K page hardware assist */
199 #define MD_PPCS 0x02000000 /* Use MI_RPN prob/priv state */
200 #define MD_IDXMASK 0x00001f00 /* TLB index to be loaded */
201 #define MD_RESETVAL 0x04000000 /* Value of register at reset */
203 #define SPRN_M_CASID 793 /* Address space ID (context) to match */
204 #define MC_ASIDMASK 0x0000000f /* Bits used for ASID value */
207 /* These are the Ks and Kp from the PowerPC books. For proper operation,
210 #define SPRN_MD_AP 794
211 #define MD_Ks 0x80000000 /* Should not be set */
212 #define MD_Kp 0x40000000 /* Should always be set */
214 /* The effective page number register. When read, contains the information
215 * about the last instruction TLB miss. When MD_RPN is written, bits in
216 * this register are used to create the TLB entry.
218 #define SPRN_MD_EPN 795
219 #define MD_EPNMASK 0xfffff000 /* Effective page number for entry */
220 #define MD_EVALID 0x00000200 /* Entry is valid */
221 #define MD_ASIDMASK 0x0000000f /* ASID match value */
222 /* Reset value is undefined */
224 /* The pointer to the base address of the first level page table.
225 * During a software tablewalk, reading this register provides the address
226 * of the entry associated with MD_EPN.
228 #define SPRN_M_TWB 796
229 #define M_L1TB 0xfffff000 /* Level 1 table base address */
230 #define M_L1INDX 0x00000ffc /* Level 1 index, when read */
231 /* Reset value is undefined */
233 /* A "level 1" or "segment" or whatever you want to call it register.
234 * For the data TLB, it contains bits that get loaded into the TLB entry
235 * when the MD_RPN is written. It is also provides the hardware assist
236 * for finding the PTE address during software tablewalk.
238 #define SPRN_MD_TWC 797
239 #define MD_L2TB 0xfffff000 /* Level 2 table base address */
240 #define MD_L2INDX 0xfffffe00 /* Level 2 index (*pte), when read */
241 #define MD_APG 0x000001e0 /* Access protection group (0) */
242 #define MD_GUARDED 0x00000010 /* Guarded storage */
243 #define MD_PSMASK 0x0000000c /* Mask of page size bits */
244 #define MD_PS8MEG 0x0000000c /* 8M page size */
245 #define MD_PS512K 0x00000004 /* 512K page size */
246 #define MD_PS4K_16K 0x00000000 /* 4K or 16K page size */
247 #define MD_WT 0x00000002 /* Use writethrough page attribute */
248 #define MD_SVALID 0x00000001 /* Segment entry is valid */
249 /* Reset value is undefined */
252 /* Real page number. Defined by the pte. Writing this register
253 * causes a TLB entry to be created for the data TLB, using
254 * additional information from the MD_EPN, and MD_TWC registers.
256 #define SPRN_MD_RPN 798
258 /* This is a temporary storage register that could be used to save
259 * a processor working register during a tablewalk.
261 #define SPRN_M_TW 799
264 * At present, all PowerPC 400-class processors share a similar TLB
265 * architecture. The instruction and data sides share a unified,
266 * 64-entry, fully-associative TLB which is maintained totally under
267 * software control. In addition, the instruction side has a
268 * hardware-managed, 4-entry, fully- associative TLB which serves as a
269 * first level to the shared TLB. These two TLBs are known as the UTLB
270 * and ITLB, respectively.
273 #define PPC4XX_TLB_SIZE 64
276 * TLB entries are defined by a "high" tag portion and a "low" data
277 * portion. On all architectures, the data portion is 32-bits.
279 * TLB entries are managed entirely under software control by reading,
280 * writing, and searchoing using the 4xx-specific tlbre, tlbwr, and tlbsx
287 #define TLB_DATA TLB_LO
288 #define TLB_TAG TLB_HI
292 #define TLB_EPN_MASK 0xFFFFFC00 /* Effective Page Number */
293 #define TLB_PAGESZ_MASK 0x00000380
294 #define TLB_PAGESZ(x) (((x) & 0x7) << 7)
299 #define PAGESZ_256K 4
303 #define TLB_VALID 0x00000040 /* Entry is valid */
307 #define TLB_RPN_MASK 0xFFFFFC00 /* Real Page Number */
308 #define TLB_PERM_MASK 0x00000300
309 #define TLB_EX 0x00000200 /* Instruction execution allowed */
310 #define TLB_WR 0x00000100 /* Writes permitted */
311 #define TLB_ZSEL_MASK 0x000000F0
312 #define TLB_ZSEL(x) (((x) & 0xF) << 4)
313 #define TLB_ATTR_MASK 0x0000000F
314 #define TLB_W 0x00000008 /* Caching is write-through */
315 #define TLB_I 0x00000004 /* Caching is inhibited */
316 #define TLB_M 0x00000002 /* Memory is coherent */
317 #define TLB_G 0x00000001 /* Memory is guarded from prefetch */
322 #define PPC44x_MMUCR_TID 0x000000ff
323 #define PPC44x_MMUCR_STS 0x00010000
325 #define PPC44x_TLB_PAGEID 0
326 #define PPC44x_TLB_XLAT 1
327 #define PPC44x_TLB_ATTRIB 2
329 /* Page identification fields */
330 #define PPC44x_TLB_EPN_MASK 0xfffffc00 /* Effective Page Number */
331 #define PPC44x_TLB_VALID 0x00000200 /* Valid flag */
332 #define PPC44x_TLB_TS 0x00000100 /* Translation address space */
333 #define PPC44x_TLB_1K 0x00000000 /* Page sizes */
334 #define PPC44x_TLB_4K 0x00000010
335 #define PPC44x_TLB_16K 0x00000020
336 #define PPC44x_TLB_64K 0x00000030
337 #define PPC44x_TLB_256K 0x00000040
338 #define PPC44x_TLB_1M 0x00000050
339 #define PPC44x_TLB_16M 0x00000070
340 #define PPC44x_TLB_256M 0x00000090
342 /* Translation fields */
343 #define PPC44x_TLB_RPN_MASK 0xfffffc00 /* Real Page Number */
344 #define PPC44x_TLB_ERPN_MASK 0x0000000f
346 /* Storage attribute and access control fields */
347 #define PPC44x_TLB_ATTR_MASK 0x0000ff80
348 #define PPC44x_TLB_U0 0x00008000 /* User 0 */
349 #define PPC44x_TLB_U1 0x00004000 /* User 1 */
350 #define PPC44x_TLB_U2 0x00002000 /* User 2 */
351 #define PPC44x_TLB_U3 0x00001000 /* User 3 */
352 #define PPC44x_TLB_W 0x00000800 /* Caching is write-through */
353 #define PPC44x_TLB_I 0x00000400 /* Caching is inhibited */
354 #define PPC44x_TLB_M 0x00000200 /* Memory is coherent */
355 #define PPC44x_TLB_G 0x00000100 /* Memory is guarded */
356 #define PPC44x_TLB_E 0x00000080 /* Memory is guarded */
358 #define PPC44x_TLB_PERM_MASK 0x0000003f
359 #define PPC44x_TLB_UX 0x00000020 /* User execution */
360 #define PPC44x_TLB_UW 0x00000010 /* User write */
361 #define PPC44x_TLB_UR 0x00000008 /* User read */
362 #define PPC44x_TLB_SX 0x00000004 /* Super execution */
363 #define PPC44x_TLB_SW 0x00000002 /* Super write */
364 #define PPC44x_TLB_SR 0x00000001 /* Super read */
366 /* Book-E defined page sizes */
367 #define BOOKE_PAGESZ_1K 0
368 #define BOOKE_PAGESZ_4K 1
369 #define BOOKE_PAGESZ_16K 2
370 #define BOOKE_PAGESZ_64K 3
371 #define BOOKE_PAGESZ_256K 4
372 #define BOOKE_PAGESZ_1M 5
373 #define BOOKE_PAGESZ_4M 6
374 #define BOOKE_PAGESZ_16M 7
375 #define BOOKE_PAGESZ_64M 8
376 #define BOOKE_PAGESZ_256M 9
377 #define BOOKE_PAGESZ_1GB 10
378 #define BOOKE_PAGESZ_4GB 11
379 #define BOOKE_PAGESZ_16GB 12
380 #define BOOKE_PAGESZ_64GB 13
381 #define BOOKE_PAGESZ_256GB 14
382 #define BOOKE_PAGESZ_1TB 15
384 #ifndef CONFIG_SERIAL_TEXT_DEBUG
385 #define PPC44x_EARLY_TLBS 1
387 #define PPC44x_EARLY_TLBS 2
391 * Freescale Book-E MMU support
394 #define MAS0_TLBSEL(x) ((x << 28) & 0x30000000)
395 #define MAS0_ESEL(x) ((x << 16) & 0x0FFF0000)
396 #define MAS0_NV(x) ((x) & 0x00000FFF)
398 #define MAS1_VALID 0x80000000
399 #define MAS1_IPROT 0x40000000
400 #define MAS1_TID(x) ((x << 16) & 0x3FFF0000)
401 #define MAS1_TS 0x00001000
402 #define MAS1_TSIZE(x) ((x << 8) & 0x00000F00)
404 #define MAS2_EPN 0xFFFFF000
405 #define MAS2_X0 0x00000040
406 #define MAS2_X1 0x00000020
407 #define MAS2_W 0x00000010
408 #define MAS2_I 0x00000008
409 #define MAS2_M 0x00000004
410 #define MAS2_G 0x00000002
411 #define MAS2_E 0x00000001
413 #define MAS3_RPN 0xFFFFF000
414 #define MAS3_U0 0x00000200
415 #define MAS3_U1 0x00000100
416 #define MAS3_U2 0x00000080
417 #define MAS3_U3 0x00000040
418 #define MAS3_UX 0x00000020
419 #define MAS3_SX 0x00000010
420 #define MAS3_UW 0x00000008
421 #define MAS3_SW 0x00000004
422 #define MAS3_UR 0x00000002
423 #define MAS3_SR 0x00000001
425 #define MAS4_TLBSELD(x) MAS0_TLBSEL(x)
426 #define MAS4_TIDDSEL 0x000F0000
427 #define MAS4_TSIZED(x) MAS1_TSIZE(x)
428 #define MAS4_X0D 0x00000040
429 #define MAS4_X1D 0x00000020
430 #define MAS4_WD 0x00000010
431 #define MAS4_ID 0x00000008
432 #define MAS4_MD 0x00000004
433 #define MAS4_GD 0x00000002
434 #define MAS4_ED 0x00000001
436 #define MAS6_SPID0 0x3FFF0000
437 #define MAS6_SPID1 0x00007FFE
438 #define MAS6_SAS 0x00000001
439 #define MAS6_SPID MAS6_SPID0
441 #define MAS7_RPN 0xFFFFFFFF
443 #endif /* _PPC_MMU_H_ */
444 #endif /* __KERNEL__ */