2 * Copyright (C) 2006 Semihalf, Marian Balakowicz <m8@semihalf.com>
5 * Adapted for Freescale's e500 core CPUs.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. The name of the author may not be used to endorse or promote products
16 * derived from this software without specific prior written permission.
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
21 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
22 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
23 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
24 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
25 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
26 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
27 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 * Copyright (C) 1995, 1996 Wolfgang Solfrank.
33 * Copyright (C) 1995, 1996 TooLs GmbH.
34 * All rights reserved.
36 * Redistribution and use in source and binary forms, with or without
37 * modification, are permitted provided that the following conditions
39 * 1. Redistributions of source code must retain the above copyright
40 * notice, this list of conditions and the following disclaimer.
41 * 2. Redistributions in binary form must reproduce the above copyright
42 * notice, this list of conditions and the following disclaimer in the
43 * documentation and/or other materials provided with the distribution.
44 * 3. All advertising materials mentioning features or use of this software
45 * must display the following acknowledgement:
46 * This product includes software developed by TooLs GmbH.
47 * 4. The name of TooLs GmbH may not be used to endorse or promote products
48 * derived from this software without specific prior written permission.
50 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
51 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
52 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
53 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
54 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
55 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
56 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
57 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
58 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
59 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
61 * from: $NetBSD: pmap.h,v 1.17 2000/03/30 16:18:24 jdolecek Exp $
64 #ifndef _MACHINE_PMAP_H_
65 #define _MACHINE_PMAP_H_
67 #include <sys/queue.h>
69 #include <sys/_cpuset.h>
70 #include <sys/_lock.h>
71 #include <sys/_mutex.h>
72 #include <machine/sr.h>
73 #include <machine/pte.h>
74 #include <machine/slb.h>
75 #include <machine/tlb.h>
81 #endif /* !defined(NPMAPS) */
85 typedef struct pmap *pmap_t;
88 LIST_ENTRY(pvo_entry) pvo_vlink; /* Link to common virt page */
90 LIST_ENTRY(pvo_entry) pvo_olink; /* Link to overflow entry */
92 RB_ENTRY(pvo_entry) pvo_plink; /* Link to pmap entries */
103 pmap_t pvo_pmap; /* Owning pmap */
104 vm_offset_t pvo_vaddr; /* VA of entry */
105 uint64_t pvo_vpn; /* Virtual page number */
107 LIST_HEAD(pvo_head, pvo_entry);
108 RB_HEAD(pvo_tree, pvo_entry);
109 int pvo_vaddr_compare(struct pvo_entry *, struct pvo_entry *);
110 RB_PROTOTYPE(pvo_tree, pvo_entry, pvo_plink, pvo_vaddr_compare);
112 /* Used by 32-bit PMAP */
113 #define PVO_PTEGIDX_MASK 0x007UL /* which PTEG slot */
114 #define PVO_PTEGIDX_VALID 0x008UL /* slot is valid */
115 /* Used by 64-bit PMAP */
116 #define PVO_HID 0x008UL /* PVO entry in alternate hash*/
118 #define PVO_WIRED 0x010UL /* PVO entry is wired */
119 #define PVO_MANAGED 0x020UL /* PVO entry is managed */
120 #define PVO_BOOTSTRAP 0x080UL /* PVO entry allocated during
122 #define PVO_DEAD 0x100UL /* waiting to be deleted */
123 #define PVO_LARGE 0x200UL /* large page */
124 #define PVO_VADDR(pvo) ((pvo)->pvo_vaddr & ~ADDR_POFF)
125 #define PVO_PTEGIDX_GET(pvo) ((pvo)->pvo_vaddr & PVO_PTEGIDX_MASK)
126 #define PVO_PTEGIDX_ISSET(pvo) ((pvo)->pvo_vaddr & PVO_PTEGIDX_VALID)
127 #define PVO_PTEGIDX_CLR(pvo) \
128 ((void)((pvo)->pvo_vaddr &= ~(PVO_PTEGIDX_VALID|PVO_PTEGIDX_MASK)))
129 #define PVO_PTEGIDX_SET(pvo, i) \
130 ((void)((pvo)->pvo_vaddr |= (i)|PVO_PTEGIDX_VALID))
131 #define PVO_VSID(pvo) ((pvo)->pvo_vpn >> 16)
137 struct slbtnode *pm_slb_tree_root;
141 register_t pm_sr[16];
145 struct pmap *pmap_phys;
146 struct pmap_statistics pm_stats;
147 struct pvo_tree pmap_pvo;
151 volatile int32_t mdpg_attrs;
152 vm_memattr_t mdpg_cache_attrs;
153 struct pvo_head mdpg_pvoh;
156 #define pmap_page_get_memattr(m) ((m)->md.mdpg_cache_attrs)
157 #define pmap_page_is_mapped(m) (!LIST_EMPTY(&(m)->md.mdpg_pvoh))
160 * Return the VSID corresponding to a given virtual address.
161 * If no VSID is currently defined, it will allocate one, and add
162 * it to a free slot if available.
164 * NB: The PMAP MUST be locked already.
166 uint64_t va_to_vsid(pmap_t pm, vm_offset_t va);
168 /* Lock-free, non-allocating lookup routines */
169 uint64_t kernel_va_to_slbv(vm_offset_t va);
170 struct slb *user_va_to_slb_entry(pmap_t pm, vm_offset_t va);
172 uint64_t allocate_user_vsid(pmap_t pm, uint64_t esid, int large);
173 void free_vsid(pmap_t pm, uint64_t esid, int large);
174 void slb_insert_user(pmap_t pm, struct slb *slb);
175 void slb_insert_kernel(uint64_t slbe, uint64_t slbv);
177 struct slbtnode *slb_alloc_tree(void);
178 void slb_free_tree(pmap_t pm);
179 struct slb **slb_alloc_user_cache(void);
180 void slb_free_user_cache(struct slb **);
185 struct mtx pm_mtx; /* pmap mutex */
186 tlbtid_t pm_tid[MAXCPU]; /* TID to identify this pmap entries in TLB */
187 cpuset_t pm_active; /* active on cpus */
188 struct pmap_statistics pm_stats; /* pmap statistics */
190 /* Page table directory, array of pointers to page tables. */
191 pte_t *pm_pdir[PDIR_NENTRIES];
193 /* List of allocated ptbl bufs (ptbl kva regions). */
194 TAILQ_HEAD(, ptbl_buf) pm_ptbl_list;
196 typedef struct pmap *pmap_t;
201 TAILQ_ENTRY(pv_entry) pv_link;
203 typedef struct pv_entry *pv_entry_t;
206 TAILQ_HEAD(, pv_entry) pv_list;
209 #define pmap_page_get_memattr(m) VM_MEMATTR_DEFAULT
210 #define pmap_page_is_mapped(m) (!TAILQ_EMPTY(&(m)->md.pv_list))
214 extern struct pmap kernel_pmap_store;
215 #define kernel_pmap (&kernel_pmap_store)
219 #define PMAP_LOCK(pmap) mtx_lock(&(pmap)->pm_mtx)
220 #define PMAP_LOCK_ASSERT(pmap, type) \
221 mtx_assert(&(pmap)->pm_mtx, (type))
222 #define PMAP_LOCK_DESTROY(pmap) mtx_destroy(&(pmap)->pm_mtx)
223 #define PMAP_LOCK_INIT(pmap) mtx_init(&(pmap)->pm_mtx, \
224 (pmap == kernel_pmap) ? "kernelpmap" : \
225 "pmap", NULL, MTX_DEF)
226 #define PMAP_LOCKED(pmap) mtx_owned(&(pmap)->pm_mtx)
227 #define PMAP_MTX(pmap) (&(pmap)->pm_mtx)
228 #define PMAP_TRYLOCK(pmap) mtx_trylock(&(pmap)->pm_mtx)
229 #define PMAP_UNLOCK(pmap) mtx_unlock(&(pmap)->pm_mtx)
231 #define pmap_page_is_write_mapped(m) (((m)->aflags & PGA_WRITEABLE) != 0)
233 void pmap_bootstrap(vm_offset_t, vm_offset_t);
234 void pmap_kenter(vm_offset_t va, vm_paddr_t pa);
235 void pmap_kenter_attr(vm_offset_t va, vm_offset_t pa, vm_memattr_t);
236 void pmap_kremove(vm_offset_t);
237 void *pmap_mapdev(vm_paddr_t, vm_size_t);
238 void *pmap_mapdev_attr(vm_paddr_t, vm_size_t, vm_memattr_t);
239 void pmap_unmapdev(vm_offset_t, vm_size_t);
240 void pmap_page_set_memattr(vm_page_t, vm_memattr_t);
241 int pmap_change_attr(vm_offset_t, vm_size_t, vm_memattr_t);
242 void pmap_deactivate(struct thread *);
243 vm_paddr_t pmap_kextract(vm_offset_t);
244 int pmap_dev_direct_mapped(vm_paddr_t, vm_size_t);
245 boolean_t pmap_mmu_install(char *name, int prio);
247 #define vtophys(va) pmap_kextract((vm_offset_t)(va))
249 #define PHYS_AVAIL_SZ 256 /* Allows up to 16GB Ram on pSeries with
250 * logical memory block size of 64MB.
251 * For more Ram increase the lmb or this value.
254 extern vm_paddr_t phys_avail[PHYS_AVAIL_SZ];
255 extern vm_offset_t virtual_avail;
256 extern vm_offset_t virtual_end;
258 extern vm_offset_t msgbuf_phys;
260 extern int pmap_bootstrapped;
262 vm_offset_t pmap_early_io_map(vm_paddr_t pa, vm_size_t size);
263 void pmap_early_io_unmap(vm_offset_t va, vm_size_t size);
267 #endif /* !_MACHINE_PMAP_H_ */