Annotation of src/sys/arch/aarch64/include/pmap.h, Revision 1.1.28.4
1.1.28.4! pgoyette 1: /* $NetBSD: pmap.h,v 1.5 2018/06/08 18:09:43 jmcneill Exp $ */
1.1 matt 2:
3: /*-
4: * Copyright (c) 2014 The NetBSD Foundation, Inc.
5: * All rights reserved.
6: *
7: * This code is derived from software contributed to The NetBSD Foundation
8: * by Matt Thomas of 3am Software Foundry.
9: *
10: * Redistribution and use in source and binary forms, with or without
11: * modification, are permitted provided that the following conditions
12: * are met:
13: * 1. Redistributions of source code must retain the above copyright
14: * notice, this list of conditions and the following disclaimer.
15: * 2. Redistributions in binary form must reproduce the above copyright
16: * notice, this list of conditions and the following disclaimer in the
17: * documentation and/or other materials provided with the distribution.
18: *
19: * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29: * POSSIBILITY OF SUCH DAMAGE.
30: */
31:
32: #ifndef _AARCH64_PMAP_H_
33: #define _AARCH64_PMAP_H_
34:
35: #ifdef __aarch64__
36:
37: #include <sys/types.h>
38: #include <sys/pool.h>
1.1.28.1 pgoyette 39: #include <sys/queue.h>
1.1 matt 40: #include <uvm/uvm_pglist.h>
41:
1.1.28.1 pgoyette 42: #include <aarch64/pte.h>
43:
1.1 matt 44: #define PMAP_GROWKERNEL
45: #define PMAP_STEAL_MEMORY
46:
1.1.28.1 pgoyette 47: #define __HAVE_VM_PAGE_MD
48:
1.1 matt 49: struct pmap {
1.1.28.1 pgoyette 50: kmutex_t pm_lock;
1.1 matt 51: struct pool *pm_pvpool;
1.1.28.1 pgoyette 52: pd_entry_t *pm_l0table; /* L0 table: 512G*512 */
53: paddr_t pm_l0table_pa;
54:
55: SLIST_HEAD(, vm_page) pm_vmlist; /* for L[0123] tables */
56:
1.1 matt 57: struct pmap_statistics pm_stats;
1.1.28.1 pgoyette 58: unsigned int pm_refcnt;
59: int pm_asid;
60: bool pm_activated;
1.1 matt 61: };
62:
1.1.28.1 pgoyette 63: struct pv_entry;
1.1 matt 64: struct vm_page_md {
1.1.28.1 pgoyette 65: kmutex_t mdpg_pvlock;
66: SLIST_ENTRY(vm_page) mdpg_vmlist; /* L[0-3] table vm_page list */
67: TAILQ_HEAD(, pv_entry) mdpg_pvhead;
68:
69: /* VM_PROT_READ means referenced, VM_PROT_WRITE means modified */
70: uint32_t mdpg_flags;
1.1 matt 71: };
72:
1.1.28.1 pgoyette 73: /* each mdpg_pvlock will be initialized in pmap_init() */
74: #define VM_MDPAGE_INIT(pg) \
75: do { \
76: TAILQ_INIT(&(pg)->mdpage.mdpg_pvhead); \
77: (pg)->mdpage.mdpg_flags = 0; \
1.1 matt 78: } while (/*CONSTCOND*/ 0)
79:
1.1.28.1 pgoyette 80: #define l0pde_pa(pde) ((paddr_t)((pde) & LX_TBL_PA))
81: #define l0pde_index(v) (((vaddr_t)(v) & L0_ADDR_BITS) >> L0_SHIFT)
82: #define l0pde_valid(pde) (((pde) & LX_VALID) == LX_VALID)
83: /* l0pte always contains table entries */
84:
85: #define l1pde_pa(pde) ((paddr_t)((pde) & LX_TBL_PA))
86: #define l1pde_index(v) (((vaddr_t)(v) & L1_ADDR_BITS) >> L1_SHIFT)
87: #define l1pde_valid(pde) (((pde) & LX_VALID) == LX_VALID)
88: #define l1pde_is_block(pde) (((pde) & LX_TYPE) == LX_TYPE_BLK)
89: #define l1pde_is_table(pde) (((pde) & LX_TYPE) == LX_TYPE_TBL)
90:
91: #define l2pde_pa(pde) ((paddr_t)((pde) & LX_TBL_PA))
92: #define l2pde_index(v) (((vaddr_t)(v) & L2_ADDR_BITS) >> L2_SHIFT)
93: #define l2pde_valid(pde) (((pde) & LX_VALID) == LX_VALID)
94: #define l2pde_is_block(pde) (((pde) & LX_TYPE) == LX_TYPE_BLK)
95: #define l2pde_is_table(pde) (((pde) & LX_TYPE) == LX_TYPE_TBL)
96:
97: #define l3pte_pa(pde) ((paddr_t)((pde) & LX_TBL_PA))
98: #define l3pte_executable(pde) \
99: (((pde) & (LX_BLKPAG_UXN|LX_BLKPAG_PXN)) != (LX_BLKPAG_UXN|LX_BLKPAG_PXN))
100: #define l3pte_index(v) (((vaddr_t)(v) & L3_ADDR_BITS) >> L3_SHIFT)
101: #define l3pte_valid(pde) (((pde) & LX_VALID) == LX_VALID)
102: #define l3pte_is_page(pde) (((pde) & LX_TYPE) == L3_TYPE_PAG)
103: /* l3pte contains always page entries */
104:
105: void pmap_bootstrap(vaddr_t, vaddr_t);
106: bool pmap_fault_fixup(struct pmap *, vaddr_t, vm_prot_t, bool user);
107: void pmap_db_pteinfo(vaddr_t, void (*)(const char *, ...));
108:
109: /* Hooks for the pool allocator */
110: paddr_t vtophys(vaddr_t);
111: #define VTOPHYS_FAILED ((paddr_t)-1L) /* POOL_PADDR_INVALID */
112: #define POOL_VTOPHYS(va) vtophys((vaddr_t) (va))
113:
114:
115: /* devmap */
116: struct pmap_devmap {
117: vaddr_t pd_va; /* virtual address */
118: paddr_t pd_pa; /* physical address */
119: psize_t pd_size; /* size of region */
120: vm_prot_t pd_prot; /* protection code */
121: u_int pd_flags; /* flags for pmap_kenter_pa() */
122: };
123:
124: void pmap_devmap_register(const struct pmap_devmap *);
125: void pmap_devmap_bootstrap(const struct pmap_devmap *);
126: const struct pmap_devmap *pmap_devmap_find_pa(paddr_t, psize_t);
127: const struct pmap_devmap *pmap_devmap_find_va(vaddr_t, vsize_t);
128: vaddr_t pmap_devmap_phystov(paddr_t);
129: paddr_t pmap_devmap_vtophys(paddr_t);
130:
131: /* devmap use L2 blocks. (2Mbyte) */
132: #define DEVMAP_TRUNC_ADDR(x) ((x) & ~L2_OFFSET)
133: #define DEVMAP_ROUND_SIZE(x) (((x) + L2_SIZE - 1) & ~(L2_SIZE - 1))
134:
135: #define DEVMAP_ENTRY(va, pa, sz) \
136: { \
137: .pd_va = DEVMAP_TRUNC_ADDR(va), \
138: .pd_pa = DEVMAP_TRUNC_ADDR(pa), \
139: .pd_size = DEVMAP_ROUND_SIZE(sz), \
140: .pd_prot = VM_PROT_READ|VM_PROT_WRITE, \
141: .pd_flags = PMAP_NOCACHE \
142: }
143: #define DEVMAP_ENTRY_END { 0 }
144:
145: /* mmap cookie and flags */
146: #define AARCH64_MMAP_FLAG_SHIFT (64 - PGSHIFT)
147: #define AARCH64_MMAP_FLAG_MASK 0xf
1.1.28.2 pgoyette 148: #define AARCH64_MMAP_WRITEBACK 0UL
149: #define AARCH64_MMAP_NOCACHE 1UL
150: #define AARCH64_MMAP_WRITECOMBINE 2UL
151: #define AARCH64_MMAP_DEVICE 3UL
1.1.28.1 pgoyette 152:
1.1.28.4! pgoyette 153: #define ARM_MMAP_MASK __BITS(63, AARCH64_MMAP_FLAG_SHIFT)
! 154: #define ARM_MMAP_WRITECOMBINE __SHIFTIN(AARCH64_MMAP_WRITECOMBINE, ARM_MMAP_MASK)
! 155: #define ARM_MMAP_WRITEBACK __SHIFTIN(AARCH64_MMAP_WRITEBACK, ARM_MMAP_MASK)
! 156: #define ARM_MMAP_NOCACHE __SHIFTIN(AARCH64_MMAP_NOCACHE, ARM_MMAP_MASK)
! 157: #define ARM_MMAP_DEVICE __SHIFTIN(AARCH64_MMAP_DEVICE, ARM_MMAP_MASK)
1.1.28.1 pgoyette 158:
159: #define PMAP_PTE 0x10000000 /* kenter_pa */
160: #define PMAP_DEV 0x20000000 /* kenter_pa */
161:
162: static inline u_int
163: aarch64_mmap_flags(paddr_t mdpgno)
164: {
165: u_int nflag, pflag;
166:
167: /*
168: * aarch64 arch has 4 memory attribute:
169: *
170: * WriteBack - write back cache
171: * WriteThru - wite through cache
172: * NoCache - no cache
173: * Device(nGnRnE) - no Gathering, no Reordering, no Early write ack
174: *
175: * but pmap has PMAP_{NOCACHE,WRITE_COMBINE,WRITE_BACK} flags.
176: */
177:
178: nflag = (mdpgno >> AARCH64_MMAP_FLAG_SHIFT) & AARCH64_MMAP_FLAG_MASK;
179: switch (nflag) {
180: case AARCH64_MMAP_DEVICE:
181: pflag = PMAP_DEV;
182: break;
183: case AARCH64_MMAP_WRITECOMBINE:
184: pflag = PMAP_WRITE_COMBINE;
185: break;
186: case AARCH64_MMAP_WRITEBACK:
187: pflag = PMAP_WRITE_BACK;
188: break;
189: case AARCH64_MMAP_NOCACHE:
190: default:
191: pflag = PMAP_NOCACHE;
192: break;
193: }
194: return pflag;
195: }
196:
197:
198: #define pmap_phys_address(pa) aarch64_ptob((pa))
199: #define pmap_mmap_flags(ppn) aarch64_mmap_flags((ppn))
200:
201: #define pmap_update(pmap) ((void)0)
202: #define pmap_copy(dp,sp,d,l,s) ((void)0)
203: #define pmap_wired_count(pmap) ((pmap)->pm_stats.wired_count)
204: #define pmap_resident_count(pmap) ((pmap)->pm_stats.resident_count)
205:
206: bool pmap_extract_coherency(pmap_t, vaddr_t, paddr_t *, bool *);
207:
208: #define PMAP_MAPSIZE1 L2_SIZE
209:
1.1 matt 210: #elif defined(__arm__)
211:
212: #include <arm/pmap.h>
213:
1.1.28.1 pgoyette 214: #endif /* __arm__/__aarch64__ */
1.1 matt 215:
1.1.28.1 pgoyette 216: #endif /* !_AARCH64_PMAP_ */
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