| @@ -1,14 +1,14 @@ | | | @@ -1,14 +1,14 @@ |
1 | /* $NetBSD: vm_machdep.c,v 1.64 2012/12/18 06:30:18 matt Exp $ */ | | 1 | /* $NetBSD: vm_machdep.c,v 1.65 2013/01/25 13:17:39 skrll Exp $ */ |
2 | | | 2 | |
3 | /* | | 3 | /* |
4 | * Copyright (c) 1994-1998 Mark Brinicombe. | | 4 | * Copyright (c) 1994-1998 Mark Brinicombe. |
5 | * Copyright (c) 1994 Brini. | | 5 | * Copyright (c) 1994 Brini. |
6 | * All rights reserved. | | 6 | * All rights reserved. |
7 | * | | 7 | * |
8 | * This code is derived from software written for Brini by Mark Brinicombe | | 8 | * This code is derived from software written for Brini by Mark Brinicombe |
9 | * | | 9 | * |
10 | * Redistribution and use in source and binary forms, with or without | | 10 | * Redistribution and use in source and binary forms, with or without |
11 | * modification, are permitted provided that the following conditions | | 11 | * modification, are permitted provided that the following conditions |
12 | * are met: | | 12 | * are met: |
13 | * 1. Redistributions of source code must retain the above copyright | | 13 | * 1. Redistributions of source code must retain the above copyright |
14 | * notice, this list of conditions and the following disclaimer. | | 14 | * notice, this list of conditions and the following disclaimer. |
| @@ -34,27 +34,27 @@ | | | @@ -34,27 +34,27 @@ |
34 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | | 34 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
35 | * SUCH DAMAGE. | | 35 | * SUCH DAMAGE. |
36 | * | | 36 | * |
37 | * RiscBSD kernel project | | 37 | * RiscBSD kernel project |
38 | * | | 38 | * |
39 | * vm_machdep.h | | 39 | * vm_machdep.h |
40 | * | | 40 | * |
41 | * vm machine specific bits | | 41 | * vm machine specific bits |
42 | * | | 42 | * |
43 | * Created : 08/10/94 | | 43 | * Created : 08/10/94 |
44 | */ | | 44 | */ |
45 | | | 45 | |
46 | #include <sys/cdefs.h> | | 46 | #include <sys/cdefs.h> |
47 | __KERNEL_RCSID(0, "$NetBSD: vm_machdep.c,v 1.64 2012/12/18 06:30:18 matt Exp $"); | | 47 | __KERNEL_RCSID(0, "$NetBSD: vm_machdep.c,v 1.65 2013/01/25 13:17:39 skrll Exp $"); |
48 | | | 48 | |
49 | #include "opt_armfpe.h" | | 49 | #include "opt_armfpe.h" |
50 | #include "opt_pmap_debug.h" | | 50 | #include "opt_pmap_debug.h" |
51 | #include "opt_perfctrs.h" | | 51 | #include "opt_perfctrs.h" |
52 | #include "opt_cputypes.h" | | 52 | #include "opt_cputypes.h" |
53 | | | 53 | |
54 | #include <sys/param.h> | | 54 | #include <sys/param.h> |
55 | #include <sys/systm.h> | | 55 | #include <sys/systm.h> |
56 | #include <sys/proc.h> | | 56 | #include <sys/proc.h> |
57 | #include <sys/malloc.h> | | 57 | #include <sys/malloc.h> |
58 | #include <sys/vnode.h> | | 58 | #include <sys/vnode.h> |
59 | #include <sys/cpu.h> | | 59 | #include <sys/cpu.h> |
60 | #include <sys/buf.h> | | 60 | #include <sys/buf.h> |
| @@ -108,27 +108,27 @@ cpu_proc_fork(struct proc *p1, struct pr | | | @@ -108,27 +108,27 @@ cpu_proc_fork(struct proc *p1, struct pr |
108 | * accordingly. | | 108 | * accordingly. |
109 | */ | | 109 | */ |
110 | void | | 110 | void |
111 | cpu_lwp_fork(struct lwp *l1, struct lwp *l2, void *stack, size_t stacksize, | | 111 | cpu_lwp_fork(struct lwp *l1, struct lwp *l2, void *stack, size_t stacksize, |
112 | void (*func)(void *), void *arg) | | 112 | void (*func)(void *), void *arg) |
113 | { | | 113 | { |
114 | struct switchframe *sf; | | 114 | struct switchframe *sf; |
115 | vaddr_t uv; | | 115 | vaddr_t uv; |
116 | | | 116 | |
117 | const struct pcb * const pcb1 = lwp_getpcb(l1); | | 117 | const struct pcb * const pcb1 = lwp_getpcb(l1); |
118 | struct pcb * const pcb2 = lwp_getpcb(l2); | | 118 | struct pcb * const pcb2 = lwp_getpcb(l2); |
119 | | | 119 | |
120 | #ifdef PMAP_DEBUG | | 120 | #ifdef PMAP_DEBUG |
121 | if (pmap_debug_level >= 0) | | 121 | if (pmap_debug_level > 0) |
122 | printf("cpu_lwp_fork: %p %p %p %p\n", l1, l2, curlwp, &lwp0); | | 122 | printf("cpu_lwp_fork: %p %p %p %p\n", l1, l2, curlwp, &lwp0); |
123 | #endif /* PMAP_DEBUG */ | | 123 | #endif /* PMAP_DEBUG */ |
124 | | | 124 | |
125 | /* Copy the pcb */ | | 125 | /* Copy the pcb */ |
126 | *pcb2 = *pcb1; | | 126 | *pcb2 = *pcb1; |
127 | | | 127 | |
128 | #ifdef FPU_VFP | | 128 | #ifdef FPU_VFP |
129 | /* | | 129 | /* |
130 | * Disable the VFP for a newly created LWP but remember if the | | 130 | * Disable the VFP for a newly created LWP but remember if the |
131 | * VFP state is valid. | | 131 | * VFP state is valid. |
132 | */ | | 132 | */ |
133 | pcb2->pcb_vfp.vfp_fpexc &= ~VFP_FPEXC_EN; | | 133 | pcb2->pcb_vfp.vfp_fpexc &= ~VFP_FPEXC_EN; |
134 | l2->l_md.md_flags = l1->l_md.md_flags & MDLWP_VFPUSED; | | 134 | l2->l_md.md_flags = l1->l_md.md_flags & MDLWP_VFPUSED; |
| @@ -138,27 +138,27 @@ cpu_lwp_fork(struct lwp *l1, struct lwp | | | @@ -138,27 +138,27 @@ cpu_lwp_fork(struct lwp *l1, struct lwp |
138 | * Set up the kernel stack for the process. | | 138 | * Set up the kernel stack for the process. |
139 | * Note: this stack is not in use if we are forking from p1 | | 139 | * Note: this stack is not in use if we are forking from p1 |
140 | */ | | 140 | */ |
141 | uv = uvm_lwp_getuarea(l2); | | 141 | uv = uvm_lwp_getuarea(l2); |
142 | pcb2->pcb_ksp = uv + USPACE_SVC_STACK_TOP; | | 142 | pcb2->pcb_ksp = uv + USPACE_SVC_STACK_TOP; |
143 | | | 143 | |
144 | #ifdef STACKCHECKS | | 144 | #ifdef STACKCHECKS |
145 | /* Fill the kernel stack with a known pattern */ | | 145 | /* Fill the kernel stack with a known pattern */ |
146 | memset((void *)(uv + USPACE_SVC_STACK_BOTTOM), 0xdd, | | 146 | memset((void *)(uv + USPACE_SVC_STACK_BOTTOM), 0xdd, |
147 | (USPACE_SVC_STACK_TOP - USPACE_SVC_STACK_BOTTOM)); | | 147 | (USPACE_SVC_STACK_TOP - USPACE_SVC_STACK_BOTTOM)); |
148 | #endif /* STACKCHECKS */ | | 148 | #endif /* STACKCHECKS */ |
149 | | | 149 | |
150 | #ifdef PMAP_DEBUG | | 150 | #ifdef PMAP_DEBUG |
151 | if (pmap_debug_level >= 0) { | | 151 | if (pmap_debug_level > 0) { |
152 | printf("l1: pcb=%p pid=%d pmap=%p\n", | | 152 | printf("l1: pcb=%p pid=%d pmap=%p\n", |
153 | pcb1, l1->l_lid, l1->l_proc->p_vmspace->vm_map.pmap); | | 153 | pcb1, l1->l_lid, l1->l_proc->p_vmspace->vm_map.pmap); |
154 | printf("l2: pcb=%p pid=%d pmap=%p\n", | | 154 | printf("l2: pcb=%p pid=%d pmap=%p\n", |
155 | pcb2, l2->l_lid, l2->l_proc->p_vmspace->vm_map.pmap); | | 155 | pcb2, l2->l_lid, l2->l_proc->p_vmspace->vm_map.pmap); |
156 | } | | 156 | } |
157 | #endif /* PMAP_DEBUG */ | | 157 | #endif /* PMAP_DEBUG */ |
158 | | | 158 | |
159 | struct trapframe *tf = (struct trapframe *)pcb2->pcb_ksp - 1; | | 159 | struct trapframe *tf = (struct trapframe *)pcb2->pcb_ksp - 1; |
160 | lwp_settrapframe(l2, tf); | | 160 | lwp_settrapframe(l2, tf); |
161 | *tf = *lwp_trapframe(l1); | | 161 | *tf = *lwp_trapframe(l1); |
162 | | | 162 | |
163 | /* | | 163 | /* |
164 | * If specified, give the child a different stack (make sure | | 164 | * If specified, give the child a different stack (make sure |
| @@ -208,27 +208,27 @@ cpu_lwp_free2(struct lwp *l) | | | @@ -208,27 +208,27 @@ cpu_lwp_free2(struct lwp *l) |
208 | /* | | 208 | /* |
209 | * Map a user I/O request into kernel virtual address space. | | 209 | * Map a user I/O request into kernel virtual address space. |
210 | * Note: the pages are already locked by uvm_vslock(), so we | | 210 | * Note: the pages are already locked by uvm_vslock(), so we |
211 | * do not need to pass an access_type to pmap_enter(). | | 211 | * do not need to pass an access_type to pmap_enter(). |
212 | */ | | 212 | */ |
213 | int | | 213 | int |
214 | vmapbuf(struct buf *bp, vsize_t len) | | 214 | vmapbuf(struct buf *bp, vsize_t len) |
215 | { | | 215 | { |
216 | vaddr_t faddr, taddr, off; | | 216 | vaddr_t faddr, taddr, off; |
217 | paddr_t fpa; | | 217 | paddr_t fpa; |
218 | | | 218 | |
219 | | | 219 | |
220 | #ifdef PMAP_DEBUG | | 220 | #ifdef PMAP_DEBUG |
221 | if (pmap_debug_level >= 0) | | 221 | if (pmap_debug_level > 0) |
222 | printf("vmapbuf: bp=%08x buf=%08x len=%08x\n", (u_int)bp, | | 222 | printf("vmapbuf: bp=%08x buf=%08x len=%08x\n", (u_int)bp, |
223 | (u_int)bp->b_data, (u_int)len); | | 223 | (u_int)bp->b_data, (u_int)len); |
224 | #endif /* PMAP_DEBUG */ | | 224 | #endif /* PMAP_DEBUG */ |
225 | | | 225 | |
226 | if ((bp->b_flags & B_PHYS) == 0) | | 226 | if ((bp->b_flags & B_PHYS) == 0) |
227 | panic("vmapbuf"); | | 227 | panic("vmapbuf"); |
228 | | | 228 | |
229 | bp->b_saveaddr = bp->b_data; | | 229 | bp->b_saveaddr = bp->b_data; |
230 | faddr = trunc_page((vaddr_t)bp->b_data); | | 230 | faddr = trunc_page((vaddr_t)bp->b_data); |
231 | off = (vaddr_t)bp->b_data - faddr; | | 231 | off = (vaddr_t)bp->b_data - faddr; |
232 | len = round_page(off + len); | | 232 | len = round_page(off + len); |
233 | taddr = uvm_km_alloc(phys_map, len, atop(faddr) & uvmexp.colormask, | | 233 | taddr = uvm_km_alloc(phys_map, len, atop(faddr) & uvmexp.colormask, |
234 | UVM_KMF_VAONLY | UVM_KMF_WAITVA | UVM_KMF_COLORMATCH); | | 234 | UVM_KMF_VAONLY | UVM_KMF_WAITVA | UVM_KMF_COLORMATCH); |
| @@ -251,27 +251,27 @@ vmapbuf(struct buf *bp, vsize_t len) | | | @@ -251,27 +251,27 @@ vmapbuf(struct buf *bp, vsize_t len) |
251 | | | 251 | |
252 | return 0; | | 252 | return 0; |
253 | } | | 253 | } |
254 | | | 254 | |
255 | /* | | 255 | /* |
256 | * Unmap a previously-mapped user I/O request. | | 256 | * Unmap a previously-mapped user I/O request. |
257 | */ | | 257 | */ |
258 | void | | 258 | void |
259 | vunmapbuf(struct buf *bp, vsize_t len) | | 259 | vunmapbuf(struct buf *bp, vsize_t len) |
260 | { | | 260 | { |
261 | vaddr_t addr, off; | | 261 | vaddr_t addr, off; |
262 | | | 262 | |
263 | #ifdef PMAP_DEBUG | | 263 | #ifdef PMAP_DEBUG |
264 | if (pmap_debug_level >= 0) | | 264 | if (pmap_debug_level > 0) |
265 | printf("vunmapbuf: bp=%08x buf=%08x len=%08x\n", | | 265 | printf("vunmapbuf: bp=%08x buf=%08x len=%08x\n", |
266 | (u_int)bp, (u_int)bp->b_data, (u_int)len); | | 266 | (u_int)bp, (u_int)bp->b_data, (u_int)len); |
267 | #endif /* PMAP_DEBUG */ | | 267 | #endif /* PMAP_DEBUG */ |
268 | | | 268 | |
269 | if ((bp->b_flags & B_PHYS) == 0) | | 269 | if ((bp->b_flags & B_PHYS) == 0) |
270 | panic("vunmapbuf"); | | 270 | panic("vunmapbuf"); |
271 | | | 271 | |
272 | /* | | 272 | /* |
273 | * Make sure the cache does not have dirty data for the | | 273 | * Make sure the cache does not have dirty data for the |
274 | * pages we had mapped. | | 274 | * pages we had mapped. |
275 | */ | | 275 | */ |
276 | addr = trunc_page((vaddr_t)bp->b_data); | | 276 | addr = trunc_page((vaddr_t)bp->b_data); |
277 | off = (vaddr_t)bp->b_data - addr; | | 277 | off = (vaddr_t)bp->b_data - addr; |