/*
- * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved.
*
- * @APPLE_LICENSE_HEADER_START@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License"). You may not use this file except in compliance with the
- * License. Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.
*
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
- * License for the specific language governing rights and limitations
- * under the License.
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
*
- * @APPLE_LICENSE_HEADER_END@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
/*
* This file is used to maintain the virtual to real mappings for a PowerPC machine.
*
*/
-#include <cpus.h>
#include <debug.h>
#include <mach_kgdb.h>
#include <mach_vm_debug.h>
#include <db_machine_commands.h>
-#include <kern/thread.h>
-#include <kern/thread_act.h>
+#include <mach/mach_types.h>
#include <mach/vm_attributes.h>
#include <mach/vm_param.h>
+
+#include <kern/kern_types.h>
+#include <kern/thread.h>
+#include <kern/spl.h>
+#include <kern/misc_protos.h>
+
#include <vm/vm_fault.h>
#include <vm/vm_kern.h>
#include <vm/vm_map.h>
#include <vm/vm_page.h>
-#include <kern/spl.h>
+#include <vm/pmap.h>
-#include <kern/misc_protos.h>
#include <ppc/exception.h>
#include <ppc/misc_protos.h>
#include <ppc/proc_reg.h>
-
-#include <vm/pmap.h>
#include <ppc/pmap.h>
#include <ppc/mem.h>
-
#include <ppc/new_screen.h>
#include <ppc/Firmware.h>
#include <ppc/mappings.h>
addr64_t *mapdebug; /* (BRINGUP) */
extern unsigned int DebugWork; /* (BRINGUP) */
-extern unsigned int hash_table_size;
-
void mapping_verify(void);
void mapping_phys_unused(ppnum_t pa);
+int nx_enabled = 0; /* enable no-execute protection */
+
/*
- * ppc_prot translates from the mach representation of protections to the PPC version.
- * We also allow for a direct setting of the protection bits. This extends the mach
- * concepts to allow the greater control we need for Virtual Machines (VMM).
- * Calculation of it like this saves a memory reference - and maybe a couple of microseconds.
- * It eliminates the used of this table.
- * unsigned char ppc_prot[16] = { 0, 3, 2, 2, 3, 3, 2, 2, 0, 1, 2, 3, 0, 1, 2, 3 };
+ * ppc_prot translates Mach's representation of protections to that of the PPC hardware.
+ * For Virtual Machines (VMM), we also provide translation entries where the output is
+ * the same as the input, allowing direct specification of PPC protections. Mach's
+ * representations are always in the range 0..7, so they always fall into the first
+ * 8 table entries; direct translations are placed in the range 8..16, so they fall into
+ * the second half of the table.
+ *
*/
+
+unsigned char ppc_prot[16] = { 4, 7, 6, 6, 3, 3, 2, 2, /* Mach -> PPC translations */
+ 0, 1, 2, 3, 4, 5, 6, 7 }; /* VMM direct translations */
+
+
+
+vm_prot_t getProtPPC(int key, boolean_t disable_NX) {
+ vm_prot_t prot;
+
+ prot = ppc_prot[key & 0xF];
+
+ if (key <= 7 && disable_NX == TRUE)
+ prot &= ~mpN;
+
+ return (prot);
+}
-#define ppc_prot(p) ((0xE4E4AFAC >> (p << 1)) & 3)
/*
* About PPC VSID generation:
ppc_max_adrsp = maxAdrSp; /* Set maximum address spaces */
maxeff = 32; /* Assume 32-bit */
- if(per_proc_info[0].pf.Available & pf64Bit) maxeff = 64; /* Is this a 64-bit machine? */
+ if(PerProcTable[0].ppe_vaddr->pf.Available & pf64Bit) maxeff = 64; /* Is this a 64-bit machine? */
- rwidth = per_proc_info[0].pf.pfMaxVAddr - maxAdrSpb; /* Reduce address width by width of address space ID */
+ rwidth = PerProcTable[0].ppe_vaddr->pf.pfMaxVAddr - maxAdrSpb; /* Reduce address width by width of address space ID */
if(rwidth > maxeff) rwidth = maxeff; /* If we still have more virtual than effective, clamp at effective */
vm_max_address = 0xFFFFFFFFFFFFFFFFULL >> (64 - rwidth); /* Get maximum effective address supported */
- vm_max_physical = 0xFFFFFFFFFFFFFFFFULL >> (64 - per_proc_info[0].pf.pfMaxPAddr); /* Get maximum physical address supported */
+ vm_max_physical = 0xFFFFFFFFFFFFFFFFULL >> (64 - PerProcTable[0].ppe_vaddr->pf.pfMaxPAddr); /* Get maximum physical address supported */
- if(per_proc_info[0].pf.Available & pf64Bit) { /* Are we 64 bit? */
+ if(PerProcTable[0].ppe_vaddr->pf.Available & pf64Bit) { /* Are we 64 bit? */
tmp = 12; /* Size of hash space */
}
else {
addr64_t mapping_remove(pmap_t pmap, addr64_t va) { /* Remove a single mapping for this VADDR
Returns TRUE if a mapping was found to remove */
- mapping *mp;
+ mapping_t *mp;
addr64_t nextva;
+ ppnum_t pgaddr;
- disable_preemption(); /* Don't change threads */
-
- while(1) { /* Keep trying until we truely fail */
+ va &= ~PAGE_MASK; /* Scrub noise bits */
+
+ do { /* Keep trying until we truely fail */
mp = hw_rem_map(pmap, va, &nextva); /* Remove a mapping from this pmap */
- if(((unsigned int)mp & mapRetCode) != mapRtRemove) break; /* If it is gone, we are done */
- }
-
- enable_preemption(); /* Thread change ok */
-
- if(!mp) return (nextva | 1); /* Nothing found to unmap */
-
- if((unsigned int)mp & mapRetCode) { /* Was there a failure? */
+ } while (mapRtRemove == ((unsigned int)mp & mapRetCode));
- panic("mapping_remove: hw_rem_map failed - pmap = %08X, va = %016llX, code = %08X\n",
- pmap, va, mp);
+ switch ((unsigned int)mp & mapRetCode) {
+ case mapRtOK:
+ break; /* Mapping removed */
+ case mapRtNotFnd:
+ return (nextva | 1); /* Nothing found to unmap */
+ default:
+ panic("mapping_remove: hw_rem_map failed - pmap = %08X, va = %016llX, code = %08X\n",
+ pmap, va, mp);
+ break;
}
+
+ pgaddr = mp->mpPAddr; /* Get page number from mapping */
mapping_free(mp); /* Add mapping to the free list */
+
+ if ((pmap->pmapFlags & pmapVMhost) && pmap->pmapVmmExt) {
+ /* If this is an assisted host, scrub any guest mappings */
+ unsigned int idx;
+ phys_entry_t *physent = mapping_phys_lookup(pgaddr, &idx);
+ /* Get physent for our physical page */
+ if (!physent) { /* No physent, could be in I/O area, so exit */
+ return (nextva);
+ }
+
+ do { /* Iterate 'till all guest mappings are gone */
+ mp = hw_scrub_guest(physent, pmap); /* Attempt to scrub a guest mapping */
+ switch ((unsigned int)mp & mapRetCode) {
+ case mapRtGuest: /* Found a guest mapping */
+ case mapRtNotFnd: /* Mapping was there, but disappeared, must retry */
+ case mapRtEmpty: /* No guest mappings left to scrub */
+ break;
+ default:
+ panic("mapping_remove: hw_scrub_guest failed - physent = %08X, code = %08X\n",
+ physent, mp); /* Cry havoc, cry wrack,
+ at least we die with harness on our backs */
+ break;
+ }
+ } while (mapRtEmpty != ((unsigned int)mp & mapRetCode));
+ }
return nextva; /* Tell them we did it */
}
* perm Mapping is permanent
* cache inhibited Cache inhibited (used if use attribute or block set )
* guarded Guarded access (used if use attribute or block set )
- * size size of block (not used if not block)
+ * size size of block in pages - 1 (not used if not block)
* prot VM protection bits
* attr Cachability/Guardedness
*
addr64_t mapping_make(pmap_t pmap, addr64_t va, ppnum_t pa, unsigned int flags, unsigned int size, vm_prot_t prot) { /* Make an address mapping */
- register mapping *mp;
- addr64_t colladdr;
- unsigned int pindex, mflags, pattr, wimg;
- phys_entry *physent;
- int i, nlists;
-
- disable_preemption(); /* Don't change threads */
+ register mapping_t *mp;
+ addr64_t colladdr, psmask;
+ unsigned int pindex, mflags, pattr, wimg, rc;
+ phys_entry_t *physent;
+ int nlists, pcf;
+ boolean_t disable_NX = FALSE;
pindex = 0;
mflags = 0x01000000; /* Start building mpFlags field (busy count = 1) */
+
+ pcf = (flags & mmFlgPcfg) >> 24; /* Get the physical page config index */
+ if(!(pPcfg[pcf].pcfFlags)) { /* Validate requested physical page configuration */
+ panic("mapping_make: invalid physical page configuration request - pmap = %08X, va = %016llX, cfg = %d\n",
+ pmap, va, pcf);
+ }
+
+ psmask = (1ULL << pPcfg[pcf].pcfPSize) - 1; /* Mask to isolate any offset into a page */
+ if(va & psmask) { /* Make sure we are page aligned on virtual */
+ panic("mapping_make: attempt to map unaligned vaddr - pmap = %08X, va = %016llX, cfg = %d\n",
+ pmap, va, pcf);
+ }
+ if(((addr64_t)pa << 12) & psmask) { /* Make sure we are page aligned on physical */
+ panic("mapping_make: attempt to map unaligned paddr - pmap = %08X, pa = %016llX, cfg = %d\n",
+ pmap, pa, pcf);
+ }
+ mflags |= (pcf << (31-mpPcfgb)); /* Insert physical page configuration index */
+
if(!(flags & mmFlgBlock)) { /* Is this a block map? */
size = 1; /* Set size to 1 page if not block */
physent = mapping_phys_lookup(pa, &pindex); /* Get physical entry */
if(!physent) { /* Did we find the physical page? */
mflags |= mpBlock; /* Force this to a block if no physent */
- size = 1; /* Force size to 1 page */
pattr = 0; /* Assume normal, non-I/O memory */
if((pa & 0xFFF80000) == 0x00080000) pattr = mmFlgCInhib | mmFlgGuarded; /* If this page is in I/O range, set I/O attributes */
}
- else pattr = ((physent->ppLink & (ppI | ppG)) >> 4); /* Get the default attributes from physent */
+ else pattr = ((physent->ppLink & (ppI | ppG)) >> 60); /* Get the default attributes from physent */
if(flags & mmFlgUseAttr) pattr = flags & (mmFlgCInhib | mmFlgGuarded); /* Use requested attributes */
}
pattr = flags & (mmFlgCInhib | mmFlgGuarded); /* Use requested attributes */
mflags |= mpBlock; /* Show that this is a block */
+
+ if(size > pmapSmallBlock) { /* Is it one? */
+ if(size & 0x00001FFF) return mapRtBadSz; /* Fail if bigger than 256MB and not a 32MB multiple */
+ size = size >> 13; /* Convert to 32MB chunks */
+ mflags = mflags | mpBSu; /* Show 32MB basic size unit */
+ }
}
wimg = 0x2; /* Set basic PPC wimg to 0b0010 - Coherent */
if(flags & mmFlgPerm) mflags |= mpPerm; /* Set permanent mapping */
size = size - 1; /* Change size to offset */
- if(size > 0xFFFF) return 1; /* Leave if size is too big */
+ if(size > 0xFFFF) return mapRtBadSz; /* Leave if size is too big */
nlists = mapSetLists(pmap); /* Set number of lists this will be on */
/* the mapping is zero except that the mpLists field is set */
mp->mpFlags |= mflags; /* Add in the rest of the flags to mpLists */
mp->mpSpace = pmap->space; /* Set the address space/pmap lookup ID */
- mp->mpBSize = size; /* Set the size */
+ mp->u.mpBSize = size; /* Set the size */
mp->mpPte = 0; /* Set the PTE invalid */
mp->mpPAddr = pa; /* Set the physical page number */
- mp->mpVAddr = (va & ~mpHWFlags) | (wimg << 3) | ppc_prot(prot); /* Add the protection and attributes to the field */
-
+
+ if ( !nx_enabled || (pmap->pmapFlags & pmapNXdisabled) )
+ disable_NX = TRUE;
+
+ mp->mpVAddr = (va & ~mpHWFlags) | (wimg << 3) | getProtPPC(prot, disable_NX); /* Add the protection and attributes to the field */
+
while(1) { /* Keep trying... */
colladdr = hw_add_map(pmap, mp); /* Go add the mapping to the pmap */
- if(!colladdr) { /* All is ok... */
- enable_preemption(); /* Ok to switch around here */
- return 0; /* Return... */
- }
+ rc = colladdr & mapRetCode; /* Separate return code */
+ colladdr &= ~mapRetCode; /* Clean up collision effective address */
- if((colladdr & mapRetCode) == mapRtRemove) { /* Is our target being removed? */
- (void)mapping_remove(pmap, colladdr); /* Yes, go help out */
- continue; /* Try to add it now */
- }
-
- if((colladdr & mapRetCode) == mapRtMapDup) { /* Is our target already mapped (collision mapping must be identical)? */
- mapping_free(mp); /* Return mapping to the free list */
- enable_preemption(); /* Ok to switch around here */
- return 0; /* Normal return */
+ switch (rc) {
+ case mapRtOK:
+ return mapRtOK; /* Mapping added successfully */
+
+ case mapRtRemove: /* Remove in progress */
+ (void)mapping_remove(pmap, colladdr); /* Lend a helping hand to another CPU doing block removal */
+ continue; /* Retry mapping add */
+
+ case mapRtMapDup: /* Identical mapping already present */
+ mapping_free(mp); /* Free duplicate mapping */
+ return mapRtOK; /* Return success */
+
+ case mapRtSmash: /* Mapping already present but does not match new mapping */
+ mapping_free(mp); /* Free duplicate mapping */
+ return (colladdr | mapRtSmash); /* Return colliding address, with some dirt added to avoid
+ confusion if effective address is 0 */
+ default:
+ panic("mapping_make: hw_add_map failed - collision addr = %016llX, code = %02X, pmap = %08X, va = %016llX, mapping = %08X\n",
+ colladdr, rc, pmap, va, mp); /* Die dead */
}
- if(colladdr != mapRtBadLk) { /* Did it collide? */
- mapping_free(mp); /* Yeah, toss the pending mapping */
- enable_preemption(); /* Ok to switch around here */
- return colladdr; /* Pass back the overlapping address */
- }
-
- panic("mapping_make: hw_add_map failed - code = %08X, pmap = %08X, va = %016llX, mapping = %08X\n",
- colladdr, pmap, va, mp); /* Die dead */
}
- return 1; /* Leave... */
+ return 1; /* Unreachable, but pleases compiler */
}
*
*/
-mapping *mapping_find(pmap_t pmap, addr64_t va, addr64_t *nextva, int full) { /* Make an address mapping */
+mapping_t *mapping_find(pmap_t pmap, addr64_t va, addr64_t *nextva, int full) { /* Make an address mapping */
- register mapping *mp;
+ register mapping_t *mp;
addr64_t curva;
pmap_t curpmap;
int nestdepth;
curpmap = pmap; /* Remember entry */
nestdepth = 0; /* Set nest depth */
- curva = (addr64_t)va; /* Set current va */
+ curva = (addr64_t)va; /* Set current va */
while(1) {
panic("mapping_find: pmap lock failure - rc = %08X, pmap = %08X\n", mp, curpmap); /* Die... */
}
- if(!mp || !(mp->mpFlags & mpNest) || !full) break; /* Are we a nest or are we only going one deep? */
+ if(!mp || ((mp->mpFlags & mpType) < mpMinSpecial) || !full) break; /* Are we done looking? */
- if(mp->mpFlags & mpSpecial) { /* Don't chain through a special mapping */
+ if((mp->mpFlags & mpType) != mpNest) { /* Don't chain through anything other than a nested pmap */
+ mapping_drop_busy(mp); /* We have everything we need from the mapping */
mp = 0; /* Set not found */
break;
}
}
/*
- * kern_return_t mapping_protect(pmap_t pmap, addt_t va, vm_prot_t prot, addr64_t *nextva) - change the protection of a virtual page
+ * void mapping_protect(pmap_t pmap, addt_t va, vm_prot_t prot, addr64_t *nextva) - change the protection of a virtual page
*
* This routine takes a pmap and virtual address and changes
* the protection. If there are PTEs associated with the mappings, they will be invalidated before
*
*/
-int mapping_protect(pmap_t pmap, addr64_t va, vm_prot_t prot, addr64_t *nextva) { /* Change protection of a virtual page */
+void
+mapping_protect(pmap_t pmap, addr64_t va, vm_prot_t prot, addr64_t *nextva) { /* Change protection of a virtual page */
int ret;
-
- ret = hw_protect(pmap, va, ppc_prot(prot), nextva); /* Try to change the protect here */
+ boolean_t disable_NX = FALSE;
+
+ if ( !nx_enabled || (pmap->pmapFlags & pmapNXdisabled) )
+ disable_NX = TRUE;
+
+ ret = hw_protect(pmap, va, getProtPPC(prot, disable_NX), nextva); /* Try to change the protect here */
switch (ret) { /* Decode return code */
case mapRtOK: /* Changed */
case mapRtNotFnd: /* Didn't find it */
- return mapRtOK; /* Ok, return... */
- break;
-
case mapRtBlock: /* Block map, just ignore request */
case mapRtNest: /* Nested pmap, just ignore request */
- return ret; /* Pass back return code */
break;
default:
*
* This routine takes a physical entry and runs through all mappings attached to it and changes
* the protection. If there are PTEs associated with the mappings, they will be invalidated before
- * the protection is changed. There is no limitation on changes, e.g.,
- * higher to lower, lower to higher.
+ * the protection is changed. There is no limitation on changes, e.g., higher to lower, lower to
+ * higher; however, changes to execute protection are ignored.
*
* Any mapping that is marked permanent is not changed
*
void mapping_protect_phys(ppnum_t pa, vm_prot_t prot) { /* Change protection of all mappings to page */
unsigned int pindex;
- phys_entry *physent;
-
+ phys_entry_t *physent;
+
physent = mapping_phys_lookup(pa, &pindex); /* Get physical entry */
if(!physent) { /* Did we find the physical page? */
panic("mapping_protect_phys: invalid physical page %08X\n", pa);
}
- hw_walk_phys(physent, hwpSPrtPhy, hwpSPrtMap, hwpNoop, ppc_prot(prot)); /* Set the new protection for page and mappings */
+ hw_walk_phys(physent, hwpNoop, hwpSPrtMap, hwpNoop,
+ getProtPPC(prot, FALSE), hwpPurgePTE); /* Set the new protection for page and mappings */
- return; /* Leave... */
+ return; /* Leave... */
}
void mapping_clr_mod(ppnum_t pa) { /* Clears the change bit of a physical page */
unsigned int pindex;
- phys_entry *physent;
+ phys_entry_t *physent;
physent = mapping_phys_lookup(pa, &pindex); /* Get physical entry */
if(!physent) { /* Did we find the physical page? */
panic("mapping_clr_mod: invalid physical page %08X\n", pa);
}
- hw_walk_phys(physent, hwpNoop, hwpCCngMap, hwpCCngPhy, 0); /* Clear change for page and mappings */
+ hw_walk_phys(physent, hwpNoop, hwpCCngMap, hwpCCngPhy,
+ 0, hwpPurgePTE); /* Clear change for page and mappings */
return; /* Leave... */
}
void mapping_set_mod(ppnum_t pa) { /* Sets the change bit of a physical page */
unsigned int pindex;
- phys_entry *physent;
+ phys_entry_t *physent;
physent = mapping_phys_lookup(pa, &pindex); /* Get physical entry */
if(!physent) { /* Did we find the physical page? */
panic("mapping_set_mod: invalid physical page %08X\n", pa);
}
- hw_walk_phys(physent, hwpNoop, hwpSCngMap, hwpSCngPhy, 0); /* Set change for page and mappings */
+ hw_walk_phys(physent, hwpNoop, hwpSCngMap, hwpSCngPhy,
+ 0, hwpNoopPTE); /* Set change for page and mappings */
return; /* Leave... */
}
void mapping_clr_ref(ppnum_t pa) { /* Clears the reference bit of a physical page */
unsigned int pindex;
- phys_entry *physent;
+ phys_entry_t *physent;
physent = mapping_phys_lookup(pa, &pindex); /* Get physical entry */
if(!physent) { /* Did we find the physical page? */
panic("mapping_clr_ref: invalid physical page %08X\n", pa);
}
- hw_walk_phys(physent, hwpNoop, hwpCRefMap, hwpCRefPhy, 0); /* Clear reference for page and mappings */
+ hw_walk_phys(physent, hwpNoop, hwpCRefMap, hwpCRefPhy,
+ 0, hwpPurgePTE); /* Clear reference for page and mappings */
return; /* Leave... */
}
void mapping_set_ref(ppnum_t pa) { /* Sets the reference bit of a physical page */
unsigned int pindex;
- phys_entry *physent;
+ phys_entry_t *physent;
physent = mapping_phys_lookup(pa, &pindex); /* Get physical entry */
if(!physent) { /* Did we find the physical page? */
panic("mapping_set_ref: invalid physical page %08X\n", pa);
}
- hw_walk_phys(physent, hwpNoop, hwpSRefMap, hwpSRefPhy, 0); /* Set reference for page and mappings */
+ hw_walk_phys(physent, hwpNoop, hwpSRefMap, hwpSRefPhy,
+ 0, hwpNoopPTE); /* Set reference for page and mappings */
return; /* Leave... */
}
/*
- * void mapping_tst_mod(ppnum_t pa) - test the change bit of a physical page
+ * boolean_t mapping_tst_mod(ppnum_t pa) - test the change bit of a physical page
*
* This routine takes a physical entry and runs through all mappings attached to it and tests
* the changed bit.
boolean_t mapping_tst_mod(ppnum_t pa) { /* Tests the change bit of a physical page */
unsigned int pindex, rc;
- phys_entry *physent;
+ phys_entry_t *physent;
physent = mapping_phys_lookup(pa, &pindex); /* Get physical entry */
if(!physent) { /* Did we find the physical page? */
panic("mapping_tst_mod: invalid physical page %08X\n", pa);
}
- rc = hw_walk_phys(physent, hwpTCngPhy, hwpTCngMap, hwpNoop, 0); /* Set change for page and mappings */
+ rc = hw_walk_phys(physent, hwpTCngPhy, hwpTCngMap, hwpNoop,
+ 0, hwpMergePTE); /* Set change for page and mappings */
return ((rc & (unsigned long)ppC) != 0); /* Leave with change bit */
}
/*
- * void mapping_tst_ref(ppnum_t pa) - tests the reference bit of a physical page
+ * boolean_t mapping_tst_ref(ppnum_t pa) - tests the reference bit of a physical page
*
* This routine takes a physical entry and runs through all mappings attached to it and tests
* the reference bit.
boolean_t mapping_tst_ref(ppnum_t pa) { /* Tests the reference bit of a physical page */
unsigned int pindex, rc;
- phys_entry *physent;
+ phys_entry_t *physent;
physent = mapping_phys_lookup(pa, &pindex); /* Get physical entry */
if(!physent) { /* Did we find the physical page? */
panic("mapping_tst_ref: invalid physical page %08X\n", pa);
}
- rc = hw_walk_phys(physent, hwpTRefPhy, hwpTRefMap, hwpNoop, 0); /* Test reference for page and mappings */
+ rc = hw_walk_phys(physent, hwpTRefPhy, hwpTRefMap, hwpNoop,
+ 0, hwpMergePTE); /* Test reference for page and mappings */
return ((rc & (unsigned long)ppR) != 0); /* Leave with reference bit */
}
+/*
+ * unsigned int mapping_tst_refmod(ppnum_t pa) - tests the reference and change bits of a physical page
+ *
+ * This routine takes a physical entry and runs through all mappings attached to it and tests
+ * their reference and changed bits.
+ */
+
+unsigned int mapping_tst_refmod(ppnum_t pa) { /* Tests the reference and change bits of a physical page */
+
+ unsigned int pindex, rc;
+ phys_entry_t *physent;
+
+ physent = mapping_phys_lookup(pa, &pindex); /* Get physical entry */
+ if (!physent) { /* Did we find the physical page? */
+ panic("mapping_tst_refmod: invalid physical page %08X\n", pa);
+ }
+
+ rc = hw_walk_phys(physent, hwpTRefCngPhy, hwpTRefCngMap, hwpNoop,
+ 0, hwpMergePTE); /* Test reference and change bits in page and mappings */
+ return (((rc & ppC)? VM_MEM_MODIFIED : 0) | ((rc & ppR)? VM_MEM_REFERENCED : 0));
+ /* Convert bits to generic format and return */
+
+}
+
+
+/*
+ * void mapping_clr_refmod(ppnum_t pa, unsigned int mask) - clears the reference and change bits specified
+ * by mask of a physical page
+ *
+ * This routine takes a physical entry and runs through all mappings attached to it and turns
+ * off all the reference and change bits.
+ */
+
+void mapping_clr_refmod(ppnum_t pa, unsigned int mask) { /* Clears the reference and change bits of a physical page */
+
+ unsigned int pindex;
+ phys_entry_t *physent;
+ unsigned int ppcMask;
+
+ physent = mapping_phys_lookup(pa, &pindex); /* Get physical entry */
+ if(!physent) { /* Did we find the physical page? */
+ panic("mapping_clr_refmod: invalid physical page %08X\n", pa);
+ }
+
+ ppcMask = (((mask & VM_MEM_MODIFIED)? ppC : 0) | ((mask & VM_MEM_REFERENCED)? ppR : 0));
+ /* Convert mask bits to PPC-specific format */
+ hw_walk_phys(physent, hwpNoop, hwpCRefCngMap, hwpCRefCngPhy,
+ ppcMask, hwpPurgePTE); /* Clear reference and change bits for page and mappings */
+ return; /* Leave... */
+}
+
+
+
/*
* phys_ent *mapping_phys_lookup(ppnum_t pp, unsigned int *pindex) - tests the reference bit of a physical page
*
* the reference bit.
*/
-phys_entry *mapping_phys_lookup(ppnum_t pp, unsigned int *pindex) { /* Finds the physical entry for the page */
+phys_entry_t *mapping_phys_lookup(ppnum_t pp, unsigned int *pindex) { /* Finds the physical entry for the page */
- phys_entry *physent;
int i;
for(i = 0; i < pmap_mem_regions_count; i++) { /* Walk through the list */
return &pmap_mem_regions[i].mrPhysTab[pp - pmap_mem_regions[i].mrStart]; /* Return the physent pointer */
}
- return (phys_entry *)0; /* Shucks, can't find it... */
+ return (phys_entry_t *)0; /* Shucks, can't find it... */
}
void mapping_adjust(void) { /* Adjust free mappings */
kern_return_t retr = KERN_SUCCESS;
- mappingblok *mb, *mbn;
+ mappingblok_t *mb, *mbn;
spl_t s;
- int allocsize, i;
- extern int vm_page_free_count;
+ int allocsize;
if(mapCtl.mapcmin <= MAPPERBLOK) {
mapCtl.mapcmin = (sane_size / PAGE_SIZE) / 16;
break; /* Fail to alocate, bail out... */
for(; allocsize > 0; allocsize -= MAPPERBLOK) { /* Release one block at a time */
mapping_free_init((vm_offset_t)mbn, 0, 1); /* Initialize a non-permanent block */
- mbn = (mappingblok *)((unsigned int)mbn + PAGE_SIZE); /* Point to the next slot */
+ mbn = (mappingblok_t *)((unsigned int)mbn + PAGE_SIZE); /* Point to the next slot */
}
if ((mapCtl.mapcinuse + mapCtl.mapcfree + (mapCtl.mapcreln * (MAPPERBLOK + 1))) > mapCtl.mapcmaxalloc)
void mapping_free(struct mapping *mp) { /* Release a mapping */
- mappingblok *mb, *mbn;
+ mappingblok_t *mb, *mbn;
spl_t s;
unsigned int full, mindx, lists;
mindx = ((unsigned int)mp & (PAGE_SIZE - 1)) >> 6; /* Get index to mapping */
- mb = (mappingblok *)((unsigned int)mp & -PAGE_SIZE); /* Point to the mapping block */
+ mb = (mappingblok_t *)((unsigned int)mp & -PAGE_SIZE); /* Point to the mapping block */
lists = (mp->mpFlags & mpLists); /* get #lists */
if ((lists == 0) || (lists > kSkipListMaxLists)) /* panic if out of range */
panic("mapping_free: mpLists invalid\n");
#if 0
mp->mpFlags = 0x99999999; /* (BRINGUP) */
mp->mpSpace = 0x9999; /* (BRINGUP) */
- mp->mpBSize = 0x9999; /* (BRINGUP) */
+ mp->u.mpBSize = 0x9999; /* (BRINGUP) */
mp->mpPte = 0x99999998; /* (BRINGUP) */
mp->mpPAddr = 0x99999999; /* (BRINGUP) */
mp->mpVAddr = 0x9999999999999999ULL; /* (BRINGUP) */
* we allocate a new block.
*
*/
+decl_simple_lock_data(extern,free_pmap_lock)
-mapping *mapping_alloc(int lists) { /* Obtain a mapping */
+mapping_t *
+mapping_alloc(int lists) { /* Obtain a mapping */
- register mapping *mp;
- mappingblok *mb, *mbn;
+ register mapping_t *mp;
+ mappingblok_t *mb, *mbn;
spl_t s;
int mindx;
- kern_return_t retr;
int big = (lists > mpBasicLists); /* set flag if big block req'd */
pmap_t refpmap, ckpmap;
unsigned int space, i;
- int ref_count;
addr64_t va, nextva;
- extern pmap_t free_pmap_list;
- extern int free_pmap_count;
- decl_simple_lock_data(extern,free_pmap_lock)
boolean_t found_mapping;
boolean_t do_rescan;
* list. If so, rescue one. Otherwise, try to steal a couple blocks worth.
*/
- if(mbn = mapCtl.mapcrel) { /* Try to rescue a block from impending doom */
+ if((mbn = mapCtl.mapcrel) != 0) { /* Try to rescue a block from impending doom */
mapCtl.mapcrel = mbn->nextblok; /* Pop the queue */
mapCtl.mapcreln--; /* Back off the count */
mapping_free_init((vm_offset_t)mbn, 0, 1); /* Initialize a non-permanent block */
ckpmap = (pmap_t)ckpmap->pmap_link.next;
- if ((ckpmap->stats.resident_count != 0) && (ckpmap != kernel_pmap)) {
+ /* We don't steal mappings from the kernel pmap, a VMM host pmap, or a VMM guest pmap with guest
+ shadow assist active.
+ */
+ if ((ckpmap->stats.resident_count != 0) && (ckpmap != kernel_pmap)
+ && !(ckpmap->pmapFlags & (pmapVMgsaa|pmapVMhost))) {
do_rescan = TRUE;
for (i=0;i<8;i++) {
mp = hw_purge_map(ckpmap, va, &nextva);
- if((unsigned int)mp & mapRetCode) {
- panic("mapping_alloc: hw_purge_map failed - pmap = %08X, va = %16llX, code = %08X\n", ckpmap, va, mp);
+ switch ((unsigned int)mp & mapRetCode) {
+ case mapRtOK:
+ mapping_free(mp);
+ found_mapping = TRUE;
+ break;
+ case mapRtNotFnd:
+ break;
+ default:
+ panic("mapping_alloc: hw_purge_map failed - pmap = %08X, va = %16llX, code = %08X\n", ckpmap, va, mp);
+ break;
}
- if(!mp) {
+ if (mapRtNotFnd == ((unsigned int)mp & mapRetCode))
if (do_rescan)
do_rescan = FALSE;
else
break;
- } else {
- mapping_free(mp);
- found_mapping = TRUE;
- }
va = nextva;
}
*/
if(mapCtl.mapcfree < mapCtl.mapcmin) { /* See if we need to replenish */
- if(mbn = mapCtl.mapcrel) { /* Try to rescue a block from impending doom */
+ if((mbn = mapCtl.mapcrel) != 0) { /* Try to rescue a block from impending doom */
mapCtl.mapcrel = mbn->nextblok; /* Pop the queue */
mapCtl.mapcreln--; /* Back off the count */
mapping_free_init((vm_offset_t)mbn, 0, 1); /* Initialize a non-permanent block */
hw_lock_unlock((hw_lock_t)&mapCtl.mapclock); /* Unlock our stuff */
splx(s); /* Restore 'rupts */
- mp = &((mapping *)mb)[mindx]; /* Point to the allocated mapping */
+ mp = &((mapping_t *)mb)[mindx]; /* Point to the allocated mapping */
mp->mpFlags = lists; /* set the list count */
void
-consider_mapping_adjust()
+consider_mapping_adjust(void)
{
spl_t s;
or goes straight to the release queue .
locked indicates if the lock is held already */
- mappingblok *mb;
+ mappingblok_t *mb;
spl_t s;
- int i;
addr64_t raddr;
ppnum_t pp;
- mb = (mappingblok *)mbl; /* Start of area */
+ mb = (mappingblok_t *)mbl; /* Start of area */
if(perm >= 0) { /* See if we need to initialize the block */
if(perm) {
int nmapb, i;
kern_return_t retr;
- mappingblok *mbn;
+ mappingblok_t *mbn;
spl_t s;
s = splhigh(); /* Don't bother from now on */
int nmapb, i;
kern_return_t retr;
- mappingblok *mbn;
+ mappingblok_t *mbn;
vm_offset_t mapping_min;
retr = kmem_suballoc(kernel_map, &mapping_min, sane_size / 16,
- FALSE, TRUE, &mapping_map);
+ FALSE, VM_FLAGS_ANYWHERE, &mapping_map);
if (retr != KERN_SUCCESS)
panic("mapping_free_prime: kmem_suballoc failed");
}
-
+void
mapping_fake_zone_info(int *count, vm_size_t *cur_size, vm_size_t *max_size, vm_size_t *elem_size,
vm_size_t *alloc_size, int *collectable, int *exhaustable)
{
addr64_t mapping_p2v(pmap_t pmap, ppnum_t pa) { /* Finds first virtual mapping of a physical page in a space */
spl_t s;
- mapping *mp;
+ mapping_t *mp;
unsigned int pindex;
- phys_entry *physent;
+ phys_entry_t *physent;
addr64_t va;
physent = mapping_phys_lookup(pa, &pindex); /* Get physical entry */
s = splhigh(); /* Make sure interruptions are disabled */
- mp = (mapping *) hw_find_space(physent, pmap->space); /* Go find the first mapping to the page from the requested pmap */
+ mp = hw_find_space(physent, pmap->space); /* Go find the first mapping to the page from the requested pmap */
if(mp) { /* Did we find one? */
va = mp->mpVAddr & -4096; /* If so, get the cleaned up vaddr */
}
-/*
- * phystokv(addr)
- *
- * Convert a physical address to a kernel virtual address if
- * there is a mapping, otherwise return NULL
- */
-
-vm_offset_t phystokv(vm_offset_t pa) {
-
- addr64_t va;
- ppnum_t pp;
-
- pp = pa >> 12; /* Convert to a page number */
-
- if(!(va = mapping_p2v(kernel_pmap, pp))) {
- return 0; /* Can't find it, return 0... */
- }
-
- return (va | (pa & (PAGE_SIZE - 1))); /* Build and return VADDR... */
-
-}
/*
* kvtophys(addr)
*
* Convert a kernel virtual address to a physical address
*/
-vm_offset_t kvtophys(vm_offset_t va) {
+addr64_t kvtophys(vm_offset_t va) {
return pmap_extract(kernel_pmap, va); /* Find mapping and lock the physical entry for this mapping */
void ignore_zero_fault(boolean_t type) { /* Sets up to ignore or honor any fault on page 0 access for the current thread */
- if(type) current_act()->mact.specFlags |= ignoreZeroFault; /* Ignore faults on page 0 */
- else current_act()->mact.specFlags &= ~ignoreZeroFault; /* Honor faults on page 0 */
+ if(type) current_thread()->machine.specFlags |= ignoreZeroFault; /* Ignore faults on page 0 */
+ else current_thread()->machine.specFlags &= ~ignoreZeroFault; /* Honor faults on page 0 */
return; /* Return the result or 0... */
}
+/*
+ * nop in current ppc implementation
+ */
+void inval_copy_windows(__unused thread_t t)
+{
+}
+
/*
* Copies data between a physical page and a virtual page, or 2 physical. This is used to
* move data from the kernel to user state. Note that the "which" parm
* says which of the parameters is physical and if we need to flush sink/source.
- * Note that both addresses may be physicical but only one may be virtual
+ * Note that both addresses may be physical, but only one may be virtual.
*
* The rules are that the size can be anything. Either address can be on any boundary
- * and span pages. The physical data must be congiguous as must the virtual.
+ * and span pages. The physical data must be contiguous as must the virtual.
*
* We can block when we try to resolve the virtual address at each page boundary.
* We don't check protection on the physical page.
*
*/
-kern_return_t copypv(addr64_t source, addr64_t sink, unsigned int size, int which) {
+kern_return_t hw_copypv_32(addr64_t source, addr64_t sink, unsigned int size, int which) {
vm_map_t map;
kern_return_t ret;
- addr64_t pa, nextva, vaddr, paddr;
- register mapping *mp;
+ addr64_t nextva, vaddr, paddr;
+ register mapping_t *mp;
spl_t s;
- unsigned int sz, left, lop, csize;
+ unsigned int lop, csize;
int needtran, bothphys;
unsigned int pindex;
- phys_entry *physent;
+ phys_entry_t *physent;
vm_prot_t prot;
int orig_which;
bothphys = 1; /* Assume both are physical */
- if(!(which & cppvPsnk)) { /* Is there a virtual page here? */
+ if(!(which & cppvPsnk)) { /* Is sink page virtual? */
vaddr = sink; /* Sink side is virtual */
bothphys = 0; /* Show both aren't physical */
prot = VM_PROT_READ | VM_PROT_WRITE; /* Sink always must be read/write */
- } else if(!(which & cppvPsrc)) { /* Source side is virtual */
+ } else if (!(which & cppvPsrc)) { /* Is source page virtual? */
vaddr = source; /* Source side is virtual */
bothphys = 0; /* Show both aren't physical */
prot = VM_PROT_READ; /* Virtual source is always read only */
while(1) {
mp = mapping_find(map->pmap, vaddr, &nextva, 1); /* Find and busy the mapping */
if(!mp) { /* Was it there? */
- if(per_proc_info[cpu_number()].istackptr == 0)
+ if(getPerProc()->istackptr == 0)
panic("copypv: No vaild mapping on memory %s %x", "RD", vaddr);
splx(s); /* Restore the interrupt level */
- ret = vm_fault(map, trunc_page_32((vm_offset_t)vaddr), prot, FALSE, FALSE, NULL, 0); /* Didn't find it, try to fault it in... */
+ ret = vm_fault(map, vm_map_trunc_page(vaddr), prot, FALSE, THREAD_UNINT, NULL, 0); /* Didn't find it, try to fault it in... */
if(ret != KERN_SUCCESS)return KERN_FAILURE; /* Didn't find any, return no good... */
if((which & cppvPsnk) || !(mp->mpVAddr & 1)) break; /* We got it mapped R/W or the source is not virtual, leave... */
mapping_drop_busy(mp); /* Go ahead and release the mapping for now */
- if(per_proc_info[cpu_number()].istackptr == 0)
+ if(getPerProc()->istackptr == 0)
panic("copypv: No vaild mapping on memory %s %x", "RDWR", vaddr);
splx(s); /* Restore the interrupt level */
- ret = vm_fault(map, trunc_page_32((vm_offset_t)vaddr), VM_PROT_READ | VM_PROT_WRITE, FALSE, FALSE, NULL, 0); /* check for a COW area */
+ ret = vm_fault(map, vm_map_trunc_page(vaddr), VM_PROT_READ | VM_PROT_WRITE, FALSE, THREAD_UNINT, NULL, 0); /* check for a COW area */
if (ret != KERN_SUCCESS) return KERN_FAILURE; /* We couldn't get it R/W, leave in disgrace... */
s = splhigh(); /* Don't bother me */
}
if(which & cppvFsrc) flush_dcache64(source, csize, 1); /* If requested, flush source before move */
if(which & cppvFsnk) flush_dcache64(sink, csize, 1); /* If requested, flush sink before move */
- bcopy_physvir(source, sink, csize); /* Do a physical copy, virtually */
+ bcopy_physvir_32(source, sink, csize); /* Do a physical copy, virtually */
if(which & cppvFsrc) flush_dcache64(source, csize, 1); /* If requested, flush source after move */
if(which & cppvFsnk) flush_dcache64(sink, csize, 1); /* If requested, flush sink after move */
void mapping_verify(void) {
spl_t s;
- mappingblok *mb, *mbn;
- int relncnt;
+ mappingblok_t *mb, *mbn;
+ unsigned int relncnt;
unsigned int dumbodude;
dumbodude = 0;
mbn = 0; /* Start with none */
for(mb = mapCtl.mapcnext; mb; mb = mb->nextblok) { /* Walk the free chain */
- if((mappingblok *)(mb->mapblokflags & 0x7FFFFFFF) != mb) { /* Is tag ok? */
+ if((mappingblok_t *)(mb->mapblokflags & 0x7FFFFFFF) != mb) { /* Is tag ok? */
panic("mapping_verify: flags tag bad, free chain; mb = %08X, tag = %08X\n", mb, mb->mapblokflags);
}
mbn = mb; /* Remember the last one */
void mapping_phys_unused(ppnum_t pa) {
unsigned int pindex;
- phys_entry *physent;
+ phys_entry_t *physent;
physent = mapping_phys_lookup(pa, &pindex); /* Get physical entry */
if(!physent) return; /* Did we find the physical page? */
- if(!(physent->ppLink & ~(ppLock | ppN | ppFlags))) return; /* No one else is here */
+ if(!(physent->ppLink & ~(ppLock | ppFlags))) return; /* No one else is here */
panic("mapping_phys_unused: physical page (%08X) in use, physent = %08X\n", pa, physent);
}
-
-
-
-
-
-
-
-
-
+void mapping_hibernate_flush(void)
+{
+ int bank;
+ unsigned int page;
+ struct phys_entry * entry;
+
+ for (bank = 0; bank < pmap_mem_regions_count; bank++)
+ {
+ entry = (struct phys_entry *) pmap_mem_regions[bank].mrPhysTab;
+ for (page = pmap_mem_regions[bank].mrStart; page <= pmap_mem_regions[bank].mrEnd; page++)
+ {
+ hw_walk_phys(entry, hwpNoop, hwpNoop, hwpNoop, 0, hwpPurgePTE);
+ entry++;
+ }
+ }
+}
+
+
+
+
+
+
projects / apple / xnu.git / blobdiff