/*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved.
*
- * @APPLE_LICENSE_HEADER_START@
- *
- * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved.
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
* 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. Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
+ * 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.
+ *
+ * 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
* Please see the License for the specific language governing rights and
* limitations under the License.
*
- * @APPLE_LICENSE_HEADER_END@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
/*
* @OSF_COPYRIGHT@
*/
#include <zone_debug.h>
-#include <cpus.h>
#include <debug.h>
#include <mach_kgdb.h>
#include <mach_vm_debug.h>
#include <ppc/new_screen.h>
#include <ppc/Firmware.h>
#include <ppc/savearea.h>
+#include <ppc/cpu_internal.h>
#include <ppc/exception.h>
#include <ppc/low_trace.h>
+#include <ppc/lowglobals.h>
#include <ddb/db_output.h>
+#include <machine/cpu_capabilities.h>
+
+#include <vm/vm_protos.h> /* must be last */
+
extern unsigned int avail_remaining;
-extern unsigned int mappingdeb0;
-extern struct Saveanchor saveanchor; /* Aliged savearea anchor */
-extern int real_ncpus; /* Number of actual CPUs */
unsigned int debugbackpocket; /* (TEST/DEBUG) */
vm_offset_t first_free_virt;
struct phys_entry *phys_table;
/* forward */
+static void pmap_map_physical(void);
+static void pmap_map_iohole(addr64_t paddr, addr64_t size);
void pmap_activate(pmap_t pmap, thread_t th, int which_cpu);
void pmap_deactivate(pmap_t pmap, thread_t th, int which_cpu);
-void copy_to_phys(vm_offset_t sva, vm_offset_t dpa, int bytecount);
-#if MACH_VM_DEBUG
-int pmap_list_resident_pages(pmap_t pmap, vm_offset_t *listp, int space);
-#endif
+extern void hw_hash_init(void);
/* NOTE: kernel_pmap_store must be in V=R storage and aligned!!!!!!!!!!!!!! */
if (pa < pmap_mem_regions[i].mrStart) continue; /* See if we fit in this region */
if (pa > pmap_mem_regions[i].mrEnd) continue; /* Check the end too */
- entry = (unsigned int)pmap_mem_regions[i].mrPhysTab + ((pa - pmap_mem_regions[i].mrStart) * sizeof(phys_entry));
+ entry = (unsigned int)pmap_mem_regions[i].mrPhysTab + ((pa - pmap_mem_regions[i].mrStart) * sizeof(phys_entry_t));
return (struct phys_entry *)entry;
}
// kprintf("DEBUG - pmap_find_physentry: page 0x%08X not found\n", pa);
*
* THIS IS NOT SUPPORTED
*/
-kern_return_t pmap_add_physical_memory(vm_offset_t spa, vm_offset_t epa,
- boolean_t available, unsigned int attr)
+kern_return_t
+pmap_add_physical_memory(
+ __unused vm_offset_t spa,
+ __unused vm_offset_t epa,
+ __unused boolean_t available,
+ __unused unsigned int attr)
{
panic("Forget it! You can't map no more memory, you greedy puke!\n");
vm_offset_t va,
vm_offset_t spa,
vm_offset_t epa,
- vm_prot_t prot)
+ vm_prot_t prot,
+ unsigned int flags)
{
+ unsigned int mflags;
+ mflags = 0; /* Make sure this is initialized to nothing special */
+ if(!(flags & VM_WIMG_USE_DEFAULT)) { /* Are they supplying the attributes? */
+ mflags = mmFlgUseAttr | (flags & VM_MEM_GUARDED) | ((flags & VM_MEM_NOT_CACHEABLE) >> 1); /* Convert to our mapping_make flags */
+ }
addr64_t colladr;
assert(epa > spa);
- colladr = mapping_make(kernel_pmap, (addr64_t)va, (ppnum_t)(spa >> 12), (mmFlgBlock | mmFlgPerm), (epa - spa) >> 12, prot & VM_PROT_ALL);
+ colladr = mapping_make(kernel_pmap, (addr64_t)va, (ppnum_t)(spa >> 12),
+ (mmFlgBlock | mmFlgPerm), (epa - spa) >> 12, (prot & VM_PROT_ALL) );
if(colladr) { /* Was something already mapped in the range? */
panic("pmap_map: attempt to map previously mapped range - va = %08X, pa = %08X, epa = %08X, collision = %016llX\n",
return(va);
}
+/*
+ * pmap_map_physical()
+ * Maps physical memory into the kernel's address map beginning at lgPMWvaddr, the
+ * physical memory window.
+ *
+ */
+void
+pmap_map_physical()
+{
+ unsigned region;
+ uint64_t msize, size;
+ addr64_t paddr, vaddr, colladdr;
+
+ /* Iterate over physical memory regions, block mapping each into the kernel's address map */
+ for (region = 0; region < (unsigned)pmap_mem_regions_count; region++) {
+ paddr = ((addr64_t)pmap_mem_regions[region].mrStart << 12); /* Get starting physical address */
+ size = (((addr64_t)pmap_mem_regions[region].mrEnd + 1) << 12) - paddr;
+
+ vaddr = paddr + lowGlo.lgPMWvaddr; /* Get starting virtual address */
+
+ while (size > 0) {
+
+ msize = ((size > 0x0000020000000000ULL) ? 0x0000020000000000ULL : size); /* Get size, but no more than 2TBs */
+
+ colladdr = mapping_make(kernel_pmap, vaddr, (paddr >> 12),
+ (mmFlgBlock | mmFlgPerm), (msize >> 12),
+ (VM_PROT_READ | VM_PROT_WRITE));
+ if (colladdr) {
+ panic ("pmap_map_physical: mapping failure - va = %016llX, pa = %08X, size = %08X, collision = %016llX\n",
+ vaddr, (paddr >> 12), (msize >> 12), colladdr);
+ }
+
+ vaddr = vaddr + (uint64_t)msize; /* Point to the next virtual addr */
+ paddr = paddr + (uint64_t)msize; /* Point to the next physical addr */
+ size -= msize;
+ }
+ }
+}
+
+/*
+ * pmap_map_iohole(addr64_t paddr, addr64_t size)
+ * Maps an I/O hole into the kernel's address map at its proper offset in
+ * the physical memory window.
+ *
+ */
+void
+pmap_map_iohole(addr64_t paddr, addr64_t size)
+{
+
+ addr64_t vaddr, colladdr, msize;
+ uint32_t psize;
+
+ vaddr = paddr + lowGlo.lgPMWvaddr; /* Get starting virtual address */
+
+ while (size > 0) {
+
+ msize = ((size > 0x0000020000000000ULL) ? 0x0000020000000000ULL : size); /* Get size, but no more than 2TBs */
+
+ colladdr = mapping_make(kernel_pmap, vaddr, (paddr >> 12),
+ (mmFlgBlock | mmFlgPerm | mmFlgGuarded | mmFlgCInhib), (msize >> 12),
+ (VM_PROT_READ | VM_PROT_WRITE));
+ if (colladdr) {
+ panic ("pmap_map_iohole: mapping failed - va = %016llX, pa = %08X, size = %08X, collision = %016llX\n",
+ vaddr, (paddr >> 12), (msize >> 12), colladdr);
+ }
+
+ vaddr = vaddr + (uint64_t)msize; /* Point to the next virtual addr */
+ paddr = paddr + (uint64_t)msize; /* Point to the next physical addr */
+ size -= msize;
+ }
+}
+
/*
* Bootstrap the system enough to run with virtual memory.
* Map the kernel's code and data, and allocate the system page table.
void
pmap_bootstrap(uint64_t msize, vm_offset_t *first_avail, unsigned int kmapsize)
{
- register struct mapping *mp;
vm_offset_t addr;
vm_size_t size;
- int i, num, j, rsize, mapsize, vmpagesz, vmmapsz, bank, nbits;
+ unsigned int i, num, mapsize, vmpagesz, vmmapsz, nbits;
+ signed bank;
uint64_t tmemsize;
uint_t htslop;
vm_offset_t first_used_addr, PCAsize;
- struct phys_entry *phys_table;
+ struct phys_entry *phys_entry;
- *first_avail = round_page_32(*first_avail); /* Make sure we start out on a page boundary */
+ *first_avail = round_page(*first_avail); /* Make sure we start out on a page boundary */
vm_last_addr = VM_MAX_KERNEL_ADDRESS; /* Set the highest address know to VM */
/*
kernel_pmap_phys = (addr64_t)&kernel_pmap_store;
cursor_pmap = &kernel_pmap_store;
- simple_lock_init(&kernel_pmap->lock, ETAP_VM_PMAP_KERNEL);
-
kernel_pmap->pmap_link.next = (queue_t)kernel_pmap; /* Set up anchor forward */
kernel_pmap->pmap_link.prev = (queue_t)kernel_pmap; /* Set up anchor reverse */
kernel_pmap->ref_count = 1;
kernel_pmap->pmapFlags = pmapKeyDef; /* Set the default keys */
+ kernel_pmap->pmapFlags |= pmapNXdisabled;
kernel_pmap->pmapCCtl = pmapCCtlVal; /* Initialize cache control */
kernel_pmap->space = PPC_SID_KERNEL;
kernel_pmap->pmapvr = 0; /* Virtual = Real */
/*
- * The hash table wants to have one pteg for every 2 physical pages.
- * We will allocate this in physical RAM, outside of kernel virtual memory,
+ * IBM's recommended hash table size is one PTEG for every 2 physical pages.
+ * However, we have found that OSX rarely uses more than 4 PTEs in a PTEG
+ * with this size table. Therefore, by default we allocate a hash table
+ * one half IBM's recommended size, ie one PTEG per 4 pages. The "ht_shift" boot-arg
+ * can be used to override the default hash table size.
+ * We will allocate the hash table in physical RAM, outside of kernel virtual memory,
* at the top of the highest bank that will contain it.
* Note that "bank" doesn't refer to a physical memory slot here, it is a range of
* physically contiguous memory.
*/
nbits = cntlzw(((msize << 1) - 1) >> 32); /* Get first bit in upper half */
- if(nbits == 32) nbits = nbits + cntlzw((uint_t)((msize << 1) - 1)); /* If upper half was empty, find bit in bottom half */
- tmemsize = 0x8000000000000000ULL >> nbits; /* Get memory size rounded up to power of 2 */
+ if (nbits == 32) /* If upper half was empty, find bit in bottom half */
+ nbits = nbits + cntlzw((uint_t)((msize << 1) - 1));
+ tmemsize = 0x8000000000000000ULL >> nbits; /* Get memory size rounded up to power of 2 */
- if(tmemsize > 0x0000002000000000ULL) tmemsize = 0x0000002000000000ULL; /* Make sure we don't make an unsupported hash table size */
-
- hash_table_size = (uint_t)(tmemsize >> 13) * per_proc_info[0].pf.pfPTEG; /* Get provisional hash_table_size */
- if(hash_table_size < (256 * 1024)) hash_table_size = (256 * 1024); /* Make sure we are at least minimum size */
+ /* Calculate hash table size: First, make sure we don't overflow 32-bit arithmetic. */
+ if (tmemsize > 0x0000002000000000ULL)
+ tmemsize = 0x0000002000000000ULL;
+
+ /* Second, calculate IBM recommended hash table size, ie one PTEG per 2 physical pages */
+ hash_table_size = (uint_t)(tmemsize >> 13) * PerProcTable[0].ppe_vaddr->pf.pfPTEG;
+
+ /* Third, cut this in half to produce the OSX default, ie one PTEG per 4 physical pages */
+ hash_table_size >>= 1;
+
+ /* Fourth, adjust default size per "ht_shift" boot arg */
+ if (hash_table_shift >= 0) /* if positive, make size bigger */
+ hash_table_size <<= hash_table_shift;
+ else /* if "ht_shift" is negative, make smaller */
+ hash_table_size >>= (-hash_table_shift);
+
+ /* Fifth, make sure we are at least minimum size */
+ if (hash_table_size < (256 * 1024))
+ hash_table_size = (256 * 1024);
while(1) { /* Try to fit hash table in PCA into contiguous memory */
panic("pmap_bootstrap: Can't find space for hash table\n"); /* This will never print, system isn't up far enough... */
}
- PCAsize = (hash_table_size / per_proc_info[0].pf.pfPTEG) * sizeof(PCA); /* Get total size of PCA table */
- PCAsize = round_page_32(PCAsize); /* Make sure it is at least a page long */
+ PCAsize = (hash_table_size / PerProcTable[0].ppe_vaddr->pf.pfPTEG) * sizeof(PCA_t); /* Get total size of PCA table */
+ PCAsize = round_page(PCAsize); /* Make sure it is at least a page long */
for(bank = pmap_mem_regions_count - 1; bank >= 0; bank--) { /* Search backwards through banks */
htslop = hash_table_base & (hash_table_size - 1); /* Get the extra that we will round down when we align */
hash_table_base = hash_table_base & -(addr64_t)hash_table_size; /* Round down to correct boundary */
- if((hash_table_base - round_page_32(PCAsize)) >= ((addr64_t)pmap_mem_regions[bank].mrStart << 12)) break; /* Leave if we fit */
+ if((hash_table_base - round_page(PCAsize)) >= ((addr64_t)pmap_mem_regions[bank].mrStart << 12)) break; /* Leave if we fit */
}
if(bank >= 0) break; /* We are done if we found a suitable bank */
}
if(htslop) { /* If there was slop (i.e., wasted pages for alignment) add a new region */
- for(i = pmap_mem_regions_count - 1; i >= bank; i--) { /* Copy from end to our bank, including our bank */
+ for(i = pmap_mem_regions_count - 1; i >= (unsigned)bank; i--) { /* Copy from end to our bank, including our bank */
pmap_mem_regions[i + 1].mrStart = pmap_mem_regions[i].mrStart; /* Set the start of the bank */
pmap_mem_regions[i + 1].mrAStart = pmap_mem_regions[i].mrAStart; /* Set the start of allocatable area */
pmap_mem_regions[i + 1].mrEnd = pmap_mem_regions[i].mrEnd; /* Set the end address of bank */
(((num * sizeof(struct phys_entry)) + 4095) & -4096) /* For the physical entries */
);
- mapsize = size = round_page_32(size); /* Get size of area to map that we just calculated */
+ mapsize = size = round_page(size); /* Get size of area to map that we just calculated */
mapsize = mapsize + kmapsize; /* Account for the kernel text size */
- vmpagesz = round_page_32(num * sizeof(struct vm_page)); /* Allow for all vm_pages needed to map physical mem */
- vmmapsz = round_page_32((num / 8) * sizeof(struct vm_map_entry)); /* Allow for vm_maps */
+ vmpagesz = round_page(num * sizeof(struct vm_page)); /* Allow for all vm_pages needed to map physical mem */
+ vmmapsz = round_page((num / 8) * sizeof(struct vm_map_entry)); /* Allow for vm_maps */
mapsize = mapsize + vmpagesz + vmmapsz; /* Add the VM system estimates into the grand total */
/* NOTE: the phys_table must be within the first 2GB of physical RAM. This makes sure we only need to do 32-bit arithmetic */
- phys_table = (struct phys_entry *) addr; /* Get pointer to physical table */
+ phys_entry = (struct phys_entry *) addr; /* Get pointer to physical table */
for (bank = 0; bank < pmap_mem_regions_count; bank++) { /* Set pointer and initialize all banks of ram */
- pmap_mem_regions[bank].mrPhysTab = phys_table; /* Set pointer to the physical table for this bank */
+ pmap_mem_regions[bank].mrPhysTab = phys_entry; /* Set pointer to the physical table for this bank */
- phys_table = phys_table + (pmap_mem_regions[bank].mrEnd - pmap_mem_regions[bank].mrStart + 1); /* Point to the next */
+ phys_entry = phys_entry + (pmap_mem_regions[bank].mrEnd - pmap_mem_regions[bank].mrStart + 1); /* Point to the next */
}
addr += (((num * sizeof(struct phys_entry)) + 4095) & -4096); /* Step on past the physical entries */
/* Map V=R the page tables */
pmap_map(first_used_addr, first_used_addr,
- round_page_32(first_used_addr + size), VM_PROT_READ | VM_PROT_WRITE);
+ round_page(first_used_addr + size), VM_PROT_READ | VM_PROT_WRITE, VM_WIMG_USE_DEFAULT);
- *first_avail = round_page_32(first_used_addr + size); /* Set next available page */
+ *first_avail = round_page(first_used_addr + size); /* Set next available page */
first_free_virt = *first_avail; /* Ditto */
+
+ /* For 64-bit machines, block map physical memory and the I/O hole into kernel space */
+ if(BootProcInfo.pf.Available & pf64Bit) { /* Are we on a 64-bit machine? */
+ lowGlo.lgPMWvaddr = PHYS_MEM_WINDOW_VADDR; /* Initialize the physical memory window's virtual address */
+
+ pmap_map_physical(); /* Block map physical memory into the window */
+
+ pmap_map_iohole(IO_MEM_WINDOW_VADDR, IO_MEM_WINDOW_SIZE);
+ /* Block map the I/O hole */
+ }
/* All the rest of memory is free - add it to the free
* regions so that it can be allocated by pmap_steal
pmap_init(void)
{
- addr64_t cva;
-
pmap_zone = zinit(pmapSize, 400 * pmapSize, 4096, "pmap");
#if ZONE_DEBUG
zone_debug_disable(pmap_zone); /* Can't debug this one 'cause it messes with size and alignment */
*/
free_pmap_list = 0; /* Set that there are no free pmaps */
free_pmap_count = 0;
- simple_lock_init(&free_pmap_lock, ETAP_VM_PMAP_CACHE);
+ simple_lock_init(&free_pmap_lock, 0);
}
vm_offset_t *startp,
vm_offset_t *endp)
{
- *startp = round_page_32(first_free_virt);
+ *startp = round_page(first_free_virt);
*endp = vm_last_addr;
}
* only, and is bounded by that size.
*/
pmap_t
-pmap_create(vm_size_t size)
+pmap_create(vm_map_size_t size, __unused boolean_t is_64bit)
{
- pmap_t pmap, ckpmap, fore, aft;
- int s, i;
- unsigned int currSID, hspace;
+ pmap_t pmap, ckpmap, fore;
+ int s;
+ unsigned int currSID;
addr64_t physpmap;
/*
fore->pmap_link.next = (queue_t)pmap; /* Current's previous's next points to me */
pmap->pmap_link.prev = (queue_t)fore; /* My prev points to what the current pointed to */
ckpmap->pmap_link.prev = (queue_t)pmap; /* Current's prev points to me */
-
- simple_lock_init(&pmap->lock, ETAP_VM_PMAP);
physpmap = ((addr64_t)pmap_find_phys(kernel_pmap, (addr64_t)((uintptr_t)pmap)) << 12) | (addr64_t)((unsigned int)pmap & 0xFFF); /* Get the physical address of the pmap */
pmapTrans[pmap->space].pmapVAddr = CAST_DOWN(unsigned int, pmap); /* Set translate table virtual to point to us */
}
+ pmap->pmapVmmExt = 0; /* Clear VMM extension block vaddr */
+ pmap->pmapVmmExtPhys = 0; /* and the paddr, too */
pmap->pmapFlags = pmapKeyDef; /* Set default key */
pmap->pmapCCtl = pmapCCtlVal; /* Initialize cache control */
pmap->ref_count = 1;
if(ref_count < 0) /* Did we go too far? */
panic("pmap_destroy(): ref_count < 0");
+
+ if (!(pmap->pmapFlags & pmapVMgsaa)) { /* Don't try this for a shadow assist guest */
+ pmap_unmap_sharedpage(pmap); /* Remove any mapping of page -1 */
+ }
#ifdef notdef
if(pmap->stats.resident_count != 0)
simple_unlock(&free_pmap_lock);
pmapTrans[pmap->space].pmapPAddr = -1; /* Invalidate the translate table physical */
pmapTrans[pmap->space].pmapVAddr = -1; /* Invalidate the translate table virtual */
- zfree(pmap_zone, (vm_offset_t) pmap);
+ zfree(pmap_zone, pmap);
}
splx(s);
}
void
pmap_reference(pmap_t pmap)
{
- spl_t s;
-
if (pmap != PMAP_NULL) hw_atomic_add(&pmap->ref_count, 1); /* Bump the count */
}
pp = mapping_phys_lookup(pa, &pindex); /* Get physical entry */
if (pp == 0) return; /* Leave if not in physical RAM */
- while(1) { /* Keep going until we toss all pages from this pmap */
+ do { /* Keep going until we toss all pages from this pmap */
if (pmap->pmapFlags & pmapVMhost) {
mp = hw_purge_phys(pp); /* Toss a map */
- if(!mp ) return;
- if((unsigned int)mp & mapRetCode) { /* Was there a failure? */
- panic("pmap_remove_some_phys: hw_purge_phys failed - pp = %08X, pmap = %08X, code = %08X\n",
- pp, pmap, mp);
+ switch ((unsigned int)mp & mapRetCode) {
+ case mapRtOK:
+ mapping_free(mp); /* Return mapping to free inventory */
+ break;
+ case mapRtGuest:
+ break; /* Don't try to return a guest mapping */
+ case mapRtEmpty:
+ break; /* Physent chain empty, we're done */
+ case mapRtNotFnd:
+ break; /* Mapping disappeared on us, retry */
+ default:
+ panic("pmap_remove_some_phys: hw_purge_phys failed - pp = %08X, pmap = %08X, code = %08X\n",
+ pp, pmap, mp); /* Handle failure with our usual lack of tact */
}
} else {
- mp = hw_purge_space(pp, pmap); /* Toss a map */
- if(!mp ) return;
- if((unsigned int)mp & mapRetCode) { /* Was there a failure? */
- panic("pmap_remove_some_phys: hw_purge_pmap failed - pp = %08X, pmap = %08X, code = %08X\n",
- pp, pmap, mp);
+ mp = hw_purge_space(pp, pmap); /* Toss a map */
+ switch ((unsigned int)mp & mapRetCode) {
+ case mapRtOK:
+ mapping_free(mp); /* Return mapping to free inventory */
+ break;
+ case mapRtEmpty:
+ break; /* Physent chain empty, we're done */
+ case mapRtNotFnd:
+ break; /* Mapping disappeared on us, retry */
+ default:
+ panic("pmap_remove_some_phys: hw_purge_phys failed - pp = %08X, pmap = %08X, code = %08X\n",
+ pp, pmap, mp); /* Handle failure with our usual lack of tact */
}
}
- mapping_free(mp); /* Toss the mapping */
- }
+ } while (mapRtEmpty != ((unsigned int)mp & mapRetCode));
+
+#if DEBUG
+ if ((pmap->pmapFlags & pmapVMhost) && !pmap_verify_free(pa))
+ panic("pmap_remove_some_phys: cruft left behind - pa = %08X, pmap = %08X\n", pa, pmap);
+#endif
return; /* Leave... */
}
register struct phys_entry *pp;
boolean_t remove;
unsigned int pindex;
- mapping *mp;
+ mapping_t *mp;
- switch (prot) {
+ switch (prot & VM_PROT_ALL) {
case VM_PROT_READ:
case VM_PROT_READ|VM_PROT_EXECUTE:
remove = FALSE;
}
- pp = mapping_phys_lookup(pa, &pindex); /* Get physical entry */
+ pp = mapping_phys_lookup(pa, &pindex); /* Get physical entry */
if (pp == 0) return; /* Leave if not in physical RAM */
if (remove) { /* If the protection was set to none, we'll remove all mappings */
- while(1) { /* Keep going until we toss all pages from this physical page */
+ do { /* Keep going until we toss all pages from this physical page */
mp = hw_purge_phys(pp); /* Toss a map */
- if(!mp ) return;
- if((unsigned int)mp & mapRetCode) { /* Was there a failure? */
- panic("pmap_page_protect: hw_purge_phys failed - pp = %08X, code = %08X\n",
- pp, mp);
+ switch ((unsigned int)mp & mapRetCode) {
+ case mapRtOK:
+ mapping_free(mp); /* Return mapping to free inventory */
+ break;
+ case mapRtGuest:
+ break; /* Don't try to return a guest mapping */
+ case mapRtNotFnd:
+ break; /* Mapping disappeared on us, retry */
+ case mapRtEmpty:
+ break; /* Physent chain empty, we're done */
+ default: panic("pmap_page_protect: hw_purge_phys failed - pp = %08X, code = %08X\n",
+ pp, mp); /* Handle failure with our usual lack of tact */
}
- mapping_free(mp); /* Toss the mapping */
- }
+ } while (mapRtEmpty != ((unsigned int)mp & mapRetCode));
+
+#if DEBUG
+ if (!pmap_verify_free(pa))
+ panic("pmap_page_protect: cruft left behind - pa = %08X\n", pa);
+#endif
return; /* Leave... */
}
* physical page.
*/
- mapping_protect_phys(pa, prot & VM_PROT_ALL); /* Change protection of all mappings to page. */
+ mapping_protect_phys(pa, (prot & VM_PROT_ALL) ); /* Change protection of all mappings to page. */
+
+}
+
+/*
+ * Routine:
+ * pmap_disconnect
+ *
+ * Function:
+ * Disconnect all mappings for this page and return reference and change status
+ * in generic format.
+ *
+ */
+unsigned int pmap_disconnect(
+ ppnum_t pa)
+{
+ register struct phys_entry *pp;
+ unsigned int pindex;
+ mapping_t *mp;
+
+ pp = mapping_phys_lookup(pa, &pindex); /* Get physical entry */
+ if (pp == 0) return (0); /* Return null ref and chg if not in physical RAM */
+ do { /* Iterate until all mappings are dead and gone */
+ mp = hw_purge_phys(pp); /* Disconnect a mapping */
+ if (!mp) break; /* All mappings are gone, leave the loop */
+ switch ((unsigned int)mp & mapRetCode) {
+ case mapRtOK:
+ mapping_free(mp); /* Return mapping to free inventory */
+ break;
+ case mapRtGuest:
+ break; /* Don't try to return a guest mapping */
+ case mapRtNotFnd:
+ break; /* Mapping disappeared on us, retry */
+ case mapRtEmpty:
+ break; /* Physent chain empty, we're done */
+ default: panic("hw_purge_phys: hw_purge_phys failed - pp = %08X, code = %08X\n",
+ pp, mp); /* Handle failure with our usual lack of tact */
+ }
+ } while (mapRtEmpty != ((unsigned int)mp & mapRetCode));
+
+#if DEBUG
+ if (!pmap_verify_free(pa))
+ panic("pmap_disconnect: cruft left behind - pa = %08X\n", pa);
+#endif
+ return (mapping_tst_refmod(pa)); /* Return page ref and chg in generic format */
}
/*
*/
void pmap_protect(
pmap_t pmap,
- vm_offset_t sva,
- vm_offset_t eva,
+ vm_map_offset_t sva,
+ vm_map_offset_t eva,
vm_prot_t prot)
{
- addr64_t va, endva, nextva;
+ addr64_t va, endva;
if (pmap == PMAP_NULL) return; /* Do nothing if no pmap */
endva = eva & -4096LL; /* Round end down to a page */
while(1) { /* Go until we finish the range */
- (void)mapping_protect(pmap, va, prot & VM_PROT_ALL, &va); /* Change the protection and see what's next */
+ mapping_protect(pmap, va, (prot & VM_PROT_ALL), &va); /* Change the protection and see what's next */
if((va == 0) || (va >= endva)) break; /* End loop if we finish range or run off the end */
}
* insert this page into the given map NOW.
*/
void
-pmap_enter(pmap_t pmap, vm_offset_t va, ppnum_t pa, vm_prot_t prot,
- unsigned int flags, boolean_t wired)
+pmap_enter(pmap_t pmap, vm_map_offset_t va, ppnum_t pa, vm_prot_t prot,
+ unsigned int flags, __unused boolean_t wired)
{
- int memattr;
- pmap_t opmap;
unsigned int mflags;
addr64_t colva;
if (pmap == PMAP_NULL) return; /* Leave if software pmap */
- disable_preemption(); /* Don't change threads */
-
mflags = 0; /* Make sure this is initialized to nothing special */
if(!(flags & VM_WIMG_USE_DEFAULT)) { /* Are they supplying the attributes? */
mflags = mmFlgUseAttr | (flags & VM_MEM_GUARDED) | ((flags & VM_MEM_NOT_CACHEABLE) >> 1); /* Convert to our mapping_make flags */
while(1) { /* Keep trying the enter until it goes in */
- colva = mapping_make(pmap, va, pa, mflags, 1, prot & VM_PROT_ALL); /* Enter the mapping into the pmap */
+ colva = mapping_make(pmap, va, pa, mflags, 1, (prot & VM_PROT_ALL) ); /* Enter the mapping into the pmap */
if(!colva) break; /* If there were no collisions, we are done... */
mapping_remove(pmap, colva); /* Remove the mapping that collided */
}
-
- enable_preemption(); /* Thread change ok */
-
}
/*
* not be changed. The block must be unmapped and then remapped with the new stuff.
* We also do not keep track of reference or change flags.
*
+ * Any block that is larger than 256MB must be a multiple of 32MB. We panic if it is not.
+ *
* Note that pmap_map_block_rc is the same but doesn't panic if collision.
*
*/
-void pmap_map_block(pmap_t pmap, addr64_t va, ppnum_t pa, vm_size_t size, vm_prot_t prot, int attr, unsigned int flags) { /* Map an autogenned block */
+void pmap_map_block(pmap_t pmap, addr64_t va, ppnum_t pa, uint32_t size, vm_prot_t prot, int attr, unsigned int flags) { /* Map an autogenned block */
- int memattr;
unsigned int mflags;
addr64_t colva;
}
// kprintf("pmap_map_block: (%08X) va = %016llX, pa = %08X, size = %08X, prot = %08X, attr = %08X, flags = %08X\n", /* (BRINGUP) */
-// current_act(), va, pa, size, prot, attr, flags); /* (BRINGUP) */
-
+// current_thread(), va, pa, size, prot, attr, flags); /* (BRINGUP) */
mflags = mmFlgBlock | mmFlgUseAttr | (attr & VM_MEM_GUARDED) | ((attr & VM_MEM_NOT_CACHEABLE) >> 1); /* Convert to our mapping_make flags */
if(flags) mflags |= mmFlgPerm; /* Mark permanent if requested */
- colva = mapping_make(pmap, va, pa, mflags, (size >> 12), prot); /* Enter the mapping into the pmap */
+ colva = mapping_make(pmap, va, pa, mflags, size, prot); /* Enter the mapping into the pmap */
if(colva) { /* If there was a collision, panic */
- panic("pmap_map_block: collision at %016llX, pmap = %08X\n", colva, pmap);
+ panic("pmap_map_block: mapping error %d, pmap = %08X, va = %016llX\n", (uint32_t)(colva & mapRetCode), pmap, va);
}
return; /* Return */
}
-int pmap_map_block_rc(pmap_t pmap, addr64_t va, ppnum_t pa, vm_size_t size, vm_prot_t prot, int attr, unsigned int flags) { /* Map an autogenned block */
+int pmap_map_block_rc(pmap_t pmap, addr64_t va, ppnum_t pa, uint32_t size, vm_prot_t prot, int attr, unsigned int flags) { /* Map an autogenned block */
- int memattr;
unsigned int mflags;
addr64_t colva;
mflags = mmFlgBlock | mmFlgUseAttr | (attr & VM_MEM_GUARDED) | ((attr & VM_MEM_NOT_CACHEABLE) >> 1); /* Convert to our mapping_make flags */
if(flags) mflags |= mmFlgPerm; /* Mark permanent if requested */
-
- colva = mapping_make(pmap, va, pa, mflags, (size >> 12), prot); /* Enter the mapping into the pmap */
+
+ colva = mapping_make(pmap, va, pa, mflags, size, prot); /* Enter the mapping into the pmap */
if(colva) return 0; /* If there was a collision, fail */
*
* NOTE: This call always will fail for physical addresses greater than 0xFFFFF000.
*/
-vm_offset_t pmap_extract(pmap_t pmap, vm_offset_t va) {
+vm_offset_t pmap_extract(pmap_t pmap, vm_map_offset_t va) {
spl_t spl;
register struct mapping *mp;
spl_t spl;
register struct mapping *mp;
ppnum_t pa, ppoffset;
- addr64_t nextva, curva;
+ addr64_t nextva;
spl = splhigh(); /* We can't allow any loss of control here */
*
*/
kern_return_t
-pmap_attribute(pmap, address, size, attribute, value)
- pmap_t pmap;
- vm_offset_t address;
- vm_size_t size;
- vm_machine_attribute_t attribute;
- vm_machine_attribute_val_t* value;
+pmap_attribute(
+ __unused pmap_t pmap,
+ __unused vm_map_offset_t address,
+ __unused vm_map_size_t size,
+ __unused vm_machine_attribute_t attribute,
+ __unused vm_machine_attribute_val_t* value)
{
return KERN_INVALID_ARGUMENT;
}
+
+
+unsigned int pmap_cache_attributes(ppnum_t pgn) {
+
+ unsigned int flags;
+ struct phys_entry * pp;
+
+ // Find physical address
+ if ((pp = pmap_find_physentry(pgn))) {
+ // Use physical attributes as default
+ // NOTE: DEVICE_PAGER_FLAGS are made to line up
+ flags = VM_MEM_COHERENT; /* We only support coherent memory */
+ if (pp->ppLink & ppG) flags |= VM_MEM_GUARDED; /* Add in guarded if it is */
+ if (pp->ppLink & ppI) flags |= VM_MEM_NOT_CACHEABLE; /* Add in cache inhibited if so */
+ } else
+ // If no physical, just hard code attributes
+ flags = VM_WIMG_IO;
+
+ return (flags);
+}
+
+
+
/*
* pmap_attribute_cache_sync(vm_offset_t pa)
*
*/
kern_return_t pmap_attribute_cache_sync(ppnum_t pp, vm_size_t size,
- vm_machine_attribute_t attribute,
- vm_machine_attribute_val_t* value) {
+ __unused vm_machine_attribute_t attribute,
+ __unused vm_machine_attribute_val_t* value) {
spl_t s;
unsigned int i, npages;
- npages = round_page_32(size) >> 12; /* Get the number of pages to do */
+ npages = round_page(size) >> 12; /* Get the number of pages to do */
for(i = 0; i < npages; i++) { /* Do all requested pages */
s = splhigh(); /* No interruptions here */
}
/*
- * pmap_sync_caches_phys(ppnum_t pa)
+ * pmap_sync_page_data_phys(ppnum_t pa)
*
* Invalidates all of the instruction cache on a physical page and
* pushes any dirty data from the data cache for the same physical page
*/
-void pmap_sync_caches_phys(ppnum_t pa) {
+void pmap_sync_page_data_phys(ppnum_t pa) {
spl_t s;
return;
}
+void
+pmap_sync_page_attributes_phys(ppnum_t pa)
+{
+ pmap_sync_page_data_phys(pa);
+}
+
/*
* pmap_collect
*
* It isn't implemented or needed or wanted.
*/
void
-pmap_collect(pmap_t pmap)
+pmap_collect(__unused pmap_t pmap)
{
return;
}
*/
void
pmap_activate(
- pmap_t pmap,
- thread_t th,
- int which_cpu)
+ __unused pmap_t pmap,
+ __unused thread_t th,
+ __unused int which_cpu)
{
return;
}
*/
void
pmap_deactivate(
- pmap_t pmap,
- thread_t th,
- int which_cpu)
+ __unused pmap_t pmap,
+ __unused thread_t th,
+ __unused int which_cpu)
{
return;
}
*/
void
pmap_pageable(
- pmap_t pmap,
- vm_offset_t start,
- vm_offset_t end,
- boolean_t pageable)
+ __unused pmap_t pmap,
+ __unused vm_map_offset_t start,
+ __unused vm_map_offset_t end,
+ __unused boolean_t pageable)
{
return; /* This is not used... */
*/
void
pmap_change_wiring(
- register pmap_t pmap,
- vm_offset_t va,
- boolean_t wired)
+ __unused pmap_t pmap,
+ __unused vm_map_offset_t va,
+ __unused boolean_t wired)
{
return; /* This is not used... */
}
void
pmap_modify_pages(
pmap_t pmap,
- vm_offset_t sva,
- vm_offset_t eva)
+ vm_map_offset_t sva,
+ vm_map_offset_t eva)
{
spl_t spl;
- mapping *mp;
+ mapping_t *mp;
ppnum_t pa;
- addr64_t va, endva, nextva;
- unsigned int saveflags;
+ addr64_t va, endva;
+ unsigned int savetype;
if (pmap == PMAP_NULL) return; /* If no pmap, can't do it... */
continue; /* We are not done and there is more to check... */
}
- saveflags = mp->mpFlags; /* Remember the flags */
+ savetype = mp->mpFlags & mpType; /* Remember the type */
pa = mp->mpPAddr; /* Remember ppage because mapping may vanish after drop call */
mapping_drop_busy(mp); /* We have everything we need from the mapping */
splx(spl); /* Restore 'rupts */
- if(saveflags & (mpNest | mpBlock)) continue; /* Can't mess around with these guys... */
+ if(savetype != mpNormal) continue; /* Can't mess around with these guys... */
mapping_set_mod(pa); /* Set the modfied bit for this page */
* independant page boundary.
*/
void
-pmap_clear_modify(vm_offset_t pa)
+pmap_clear_modify(ppnum_t pa)
{
- mapping_clr_mod((ppnum_t)pa); /* Clear all change bits for physical page */
+ mapping_clr_mod(pa); /* Clear all change bits for physical page */
}
* since the last call to pmap_clear_modify().
*/
boolean_t
-pmap_is_modified(register vm_offset_t pa)
+pmap_is_modified(register ppnum_t pa)
{
- return mapping_tst_mod((ppnum_t)pa); /* Check for modified */
+ return mapping_tst_mod(pa); /* Check for modified */
}
*
*/
void
-pmap_clear_reference(vm_offset_t pa)
+pmap_clear_reference(ppnum_t pa)
{
- mapping_clr_ref((ppnum_t)pa); /* Check for modified */
+ mapping_clr_ref(pa); /* Check for modified */
}
/*
* since the last call to pmap_clear_reference().
*/
boolean_t
-pmap_is_referenced(vm_offset_t pa)
+pmap_is_referenced(ppnum_t pa)
{
- return mapping_tst_ref((ppnum_t)pa); /* Check for referenced */
+ return mapping_tst_ref(pa); /* Check for referenced */
}
/*
- * pmap_canExecute(ppnum_t pa)
- * returns 1 if instructions can execute
- * returns 0 if know not (i.e. guarded and/or non-executable set)
- * returns -1 if we don't know (i.e., the page is no RAM)
+ * pmap_get_refmod(phys)
+ * returns the referenced and modified bits of the specified
+ * physical page.
*/
-int
-pmap_canExecute(ppnum_t pa)
-{
- phys_entry *physent;
- unsigned int pindex;
+unsigned int
+pmap_get_refmod(ppnum_t pa)
+{
+ return (mapping_tst_refmod(pa));
+}
+
+/*
+ * pmap_clear_refmod(phys, mask)
+ * clears the referenced and modified bits as specified by the mask
+ * of the specified physical page.
+ */
+void
+pmap_clear_refmod(ppnum_t pa, unsigned int mask)
+{
+ mapping_clr_refmod(pa, mask);
+}
+
+/*
+ * pmap_eligible_for_execute(ppnum_t pa)
+ * return true if physical address is eligible to contain executable code;
+ * otherwise, return false
+ */
+boolean_t
+pmap_eligible_for_execute(ppnum_t pa)
+{
+ phys_entry_t *physent;
+ unsigned int pindex;
physent = mapping_phys_lookup(pa, &pindex); /* Get physical entry */
- if(!physent) return -1; /* If there is no physical entry, we don't know... */
+ if((!physent) || (physent->ppLink & ppG))
+ return 0; /* If there is no physical entry or marked guarded,
+ the entry is not eligible for execute */
- if((physent->ppLink & (ppN | ppG))) return 0; /* If we are marked non-executable or guarded, say we can not execute */
- return 1; /* Good to go... */
+ return 1; /* Otherwise, entry is eligible for execute */
}
#if MACH_VM_DEBUG
int
pmap_list_resident_pages(
- register pmap_t pmap,
- register vm_offset_t *listp,
- register int space)
+ __unused pmap_t pmap,
+ __unused vm_offset_t *listp,
+ __unused int space)
{
return 0;
}
vm_offset_t dst_offset,
vm_size_t len)
{
- register struct phys_entry *pp_src, *pp_dst;
- spl_t s;
addr64_t fsrc, fdst;
assert(((dst <<12) & PAGE_MASK+dst_offset+len) <= PAGE_SIZE);
void
pmap_zero_part_page(
- vm_offset_t p,
- vm_offset_t offset,
- vm_size_t len)
+ __unused vm_offset_t p,
+ __unused vm_offset_t offset,
+ __unused vm_size_t len)
{
panic("pmap_zero_part_page");
}
pp = mapping_phys_lookup(pa, &pindex); /* Get physical entry */
if (pp == 0) return FALSE; /* If there isn't one, show no mapping... */
- if(pp->ppLink & ~(ppLock | ppN | ppFlags)) return TRUE; /* We have at least one mapping */
- return FALSE; /* No mappings */
+ if(pp->ppLink & ~(ppLock | ppFlags)) return FALSE; /* We have at least one mapping */
+ return TRUE; /* No mappings */
}
void pmap_switch(pmap_t map)
{
- unsigned int i;
-
-
- hw_blow_seg(copyIOaddr); /* Blow off the first segment */
- hw_blow_seg(copyIOaddr + 0x10000000ULL); /* Blow off the second segment */
+ hw_blow_seg(lowGlo.lgUMWvaddr); /* Blow off the first segment */
+ hw_blow_seg(lowGlo.lgUMWvaddr + 0x10000000ULL); /* Blow off the second segment */
/* when changing to kernel space, don't bother
* doing anything, the kernel is mapped from here already.
* subord = the pmap that goes into the grand
* vstart = start of range in pmap to be inserted
* nstart = start of range in pmap nested pmap
- * size = Size of nest area (up to 16TB)
+ * size = Size of nest area (up to 2TB)
*
* Inserts a pmap into another. This is used to implement shared segments.
* On the current PPC processors, this is limited to segment (256MB) aligned
* We actually kinda allow recursive nests. The gating factor is that we do not allow
* nesting on top of something that is already mapped, i.e., the range must be empty.
*
- *
- *
* Note that we depend upon higher level VM locks to insure that things don't change while
* we are doing this. For example, VM should not be doing any pmap enters while it is nesting
* or do 2 nests at once.
kern_return_t pmap_nest(pmap_t grand, pmap_t subord, addr64_t vstart, addr64_t nstart, uint64_t size) {
- addr64_t nextva, vend, colladdr;
+ addr64_t vend, colladdr;
unsigned int msize;
- int i, nlists, asize;
- spl_t s;
- mapping *mp;
-
+ int nlists;
+ mapping_t *mp;
if(size & 0x0FFFFFFFULL) return KERN_INVALID_VALUE; /* We can only do this for multiples of 256MB */
- if((size >> 28) > 65536) return KERN_INVALID_VALUE; /* Max size we can nest is 16TB */
+ if((size >> 25) > 65536) return KERN_INVALID_VALUE; /* Max size we can nest is 2TB */
if(vstart & 0x0FFFFFFFULL) return KERN_INVALID_VALUE; /* We can only do this aligned to 256MB */
if(nstart & 0x0FFFFFFFULL) return KERN_INVALID_VALUE; /* We can only do this aligned to 256MB */
panic("pmap_nest: size is invalid - %016llX\n", size);
}
- msize = (size >> 28) - 1; /* Change size to blocks of 256MB */
+ msize = (size >> 25) - 1; /* Change size to blocks of 32MB */
nlists = mapSetLists(grand); /* Set number of lists this will be on */
mp = mapping_alloc(nlists); /* Get a spare mapping block */
- mp->mpFlags = 0x01000000 | mpNest | nlists; /* Set the flags. Make sure busy count is 1 */
+ mp->mpFlags = 0x01000000 | mpNest | mpPerm | mpBSu | nlists; /* Make this a permanent nested pmap with a 32MB basic size unit */
+ /* Set the flags. Make sure busy count is 1 */
mp->mpSpace = subord->space; /* Set the address space/pmap lookup ID */
- mp->mpBSize = msize; /* Set the size */
+ mp->u.mpBSize = msize; /* Set the size */
mp->mpPte = 0; /* Set the PTE invalid */
mp->mpPAddr = 0; /* Set the physical page number */
mp->mpVAddr = vstart; /* Set the address */
kern_return_t pmap_unnest(pmap_t grand, addr64_t vaddr) {
- unsigned int oflags, seg, grandr, tstamp;
- int i, tcpu, mycpu;
+ unsigned int tstamp, i, mycpu;
addr64_t nextva;
spl_t s;
- mapping *mp;
+ mapping_t *mp;
s = splhigh(); /* Make sure interruptions are disabled */
panic("pmap_unnest: Attempt to unnest an unnested segment - va = %016llX\n", vaddr);
}
- if(!(mp->mpFlags & mpNest)) { /* Did we find something other than a nest? */
+ if((mp->mpFlags & mpType) != mpNest) { /* Did we find something other than a nest? */
panic("pmap_unnest: Attempt to unnest something that is not a nest - va = %016llX\n", vaddr);
}
panic("pmap_unnest: Attempt to unnest something that is not at start of nest - va = %016llX\n", vaddr);
}
- (void)hw_atomic_or(&mp->mpFlags, mpRemovable); /* Show that this mapping is now removable */
+ (void)hw_atomic_and(&mp->mpFlags, ~mpPerm); /* Show that this mapping is now removable */
- mapping_drop_busy(mp); /* Go ahead and relase the mapping now */
+ mapping_drop_busy(mp); /* Go ahead and release the mapping now */
- disable_preemption(); /* It's all for me! */
splx(s); /* Restore 'rupts */
(void)mapping_remove(grand, vaddr); /* Toss the nested pmap mapping */
*/
- mycpu = cpu_number(); /* Who am I? Am I just a dream? */
for(i=0; i < real_ncpus; i++) { /* Cycle through processors */
- if((unsigned int)grand == per_proc_info[i].ppUserPmapVirt) { /* Is this guy using the changed pmap? */
+ disable_preemption();
+ mycpu = cpu_number(); /* Who am I? Am I just a dream? */
+ if((unsigned int)grand == PerProcTable[i].ppe_vaddr->ppUserPmapVirt) { /* Is this guy using the changed pmap? */
- per_proc_info[i].ppInvSeg = 1; /* Show that we need to invalidate the segments */
+ PerProcTable[i].ppe_vaddr->ppInvSeg = 1; /* Show that we need to invalidate the segments */
- if(i == mycpu) continue; /* Don't diddle ourselves */
+ if(i != mycpu) {
- tstamp = per_proc_info[i].ruptStamp[1]; /* Save the processor's last interrupt time stamp */
- if(cpu_signal(i, SIGPcpureq, CPRQsegload, 0) != KERN_SUCCESS) { /* Make sure we see the pmap change */
- continue;
- }
-
- if(!hw_cpu_wcng(&per_proc_info[i].ruptStamp[1], tstamp, LockTimeOut)) { /* Wait for the other processors to enter debug */
- panic("pmap_unnest: Other processor (%d) did not see interruption request\n", i);
+ tstamp = PerProcTable[i].ppe_vaddr->ruptStamp[1]; /* Save the processor's last interrupt time stamp */
+ if(cpu_signal(i, SIGPcpureq, CPRQsegload, 0) == KERN_SUCCESS) { /* Make sure we see the pmap change */
+ if(!hw_cpu_wcng(&PerProcTable[i].ppe_vaddr->ruptStamp[1], tstamp, LockTimeOut)) { /* Wait for the other processors to enter debug */
+ panic("pmap_unnest: Other processor (%d) did not see interruption request\n", i);
+ }
+ }
}
}
+ enable_preemption();
}
- enable_preemption(); /* Others can run now */
return KERN_SUCCESS; /* Bye, bye, butterfly... */
}
/*
- * void MapUserAddressSpaceInit(void)
+ * void MapUserMemoryWindowInit(void)
*
- * Initialized anything we need to in order to map user address space slices into
+ * Initialize anything we need to in order to map user address space slices into
* the kernel. Primarily used for copy in/out.
*
* Currently we only support one 512MB slot for this purpose. There are two special
*
* The special pmap nest (which is allocated in this function) is used as a place holder
* in the kernel's pmap search list. It is 512MB long and covers the address range
- * starting at copyIOaddr. It points to no actual memory and when the fault handler
+ * starting at lgUMWvaddr. It points to no actual memory and when the fault handler
* hits in it, it knows to look in the per_proc and start using the linkage
* mapping contained therin.
*
*
*/
-void MapUserAddressSpaceInit(void) {
+void MapUserMemoryWindowInit(void) {
addr64_t colladdr;
- int nlists, asize;
- mapping *mp;
+ int nlists;
+ mapping_t *mp;
nlists = mapSetLists(kernel_pmap); /* Set number of lists this will be on */
mp = mapping_alloc(nlists); /* Get a spare mapping block */
-
- mp->mpFlags = 0x01000000 |mpNest | mpSpecial | nlists; /* Set the flags. Make sure busy count is 1 */
+
+ mp->mpFlags = 0x01000000 | mpLinkage | mpPerm | mpBSu | nlists; /* Make this a permanent nested pmap with a 32MB basic size unit */
+ /* Set the flags. Make sure busy count is 1 */
mp->mpSpace = kernel_pmap->space; /* Set the address space/pmap lookup ID */
- mp->mpBSize = 1; /* Set the size to 2 segments */
+ mp->u.mpBSize = 15; /* Set the size to 2 segments in 32MB chunks - 1 */
mp->mpPte = 0; /* Means nothing */
mp->mpPAddr = 0; /* Means nothing */
- mp->mpVAddr = copyIOaddr; /* Set the address range we cover */
+ mp->mpVAddr = lowGlo.lgUMWvaddr; /* Set the address range we cover */
mp->mpNestReloc = 0; /* Means nothing */
colladdr = hw_add_map(kernel_pmap, mp); /* Go add the mapping to the pmap */
if(colladdr) { /* Did it collide? */
- panic("MapUserAddressSpaceInit: MapUserAddressSpace range already mapped\n");
+ panic("MapUserMemoryWindowInit: MapUserMemoryWindow range already mapped\n");
}
return;
}
/*
- * addr64_t MapUserAddressSpace(vm_map_t map, vm_offset_t va, size)
+ * addr64_t MapUserMemoryWindow(vm_map_t map, vm_offset_t va, size)
*
* map = the vm_map that we are mapping into the kernel
* va = start of the address range we are mapping
- * size = size of the range. No greater than 256MB and not 0.
* Note that we do not test validty, we chose to trust our fellows...
*
- * Maps a slice of a user address space into a predefined kernel range
- * on a per-thread basis. In the future, the restriction of a predefined
- * range will be loosened.
+ * Maps a 512M slice of a user address space into a predefined kernel range
+ * on a per-thread basis. We map only the first 256M segment, allowing the
+ * second 256M segment to fault in as needed. This allows our clients to access
+ * an arbitrarily aligned operand up to 256M in size.
+ *
+ * In the future, the restriction of a predefined range may be loosened.
*
* Builds the proper linkage map to map the user range
* We will round this down to the previous segment boundary and calculate
* we just exit. This is done for performance reasons. It was found that
* there was a considerable boost in copyin/out performance if we did not
* invalidate the segment at ReleaseUserAddressSpace time, so we dumped the
- * restriction that you had to bracket MapUserAddressSpace. Further, there
+ * restriction that you had to bracket MapUserMemoryWindow. Further, there
* is a yet further boost if you didn't need to map it each time. The theory
* behind this is that many times copies are to or from the same segment and
* done multiple times within the same system call. To take advantage of that,
- * we check cioSpace and cioRelo to see if we've already got it.
+ * we check umwSpace and umwRelo to see if we've already got it.
*
* We also need to half-invalidate the slice when we context switch or go
* back to user state. A half-invalidate does not clear the actual mapping,
- * but it does force the MapUserAddressSpace function to reload the segment
+ * but it does force the MapUserMemoryWindow function to reload the segment
* register/SLBE. If this is not done, we can end up some pretty severe
* performance penalties. If we map a slice, and the cached space/relocation is
* the same, we won't reload the segment registers. Howver, since we ran someone else,
*
*/
-addr64_t MapUserAddressSpace(vm_map_t map, addr64_t va, unsigned int size) {
+addr64_t MapUserMemoryWindow(
+ vm_map_t map,
+ addr64_t va) {
addr64_t baddrs, reladd;
- thread_act_t act;
- mapping *mp;
- struct per_proc_info *perproc;
+ thread_t thread;
+ mapping_t *mp;
baddrs = va & 0xFFFFFFFFF0000000ULL; /* Isolate the segment */
- act = current_act(); /* Remember our activation */
+ thread = current_thread(); /* Remember our activation */
- reladd = baddrs - copyIOaddr; /* Get the relocation from user to kernel */
+ reladd = baddrs - lowGlo.lgUMWvaddr; /* Get the relocation from user to kernel */
- if((act->mact.cioSpace == map->pmap->space) && (act->mact.cioRelo == reladd)) { /* Already mapped? */
- return ((va & 0x0FFFFFFFULL) | copyIOaddr); /* Pass back the kernel address we are to use */
+ if((thread->machine.umwSpace == map->pmap->space) && (thread->machine.umwRelo == reladd)) { /* Already mapped? */
+ return ((va & 0x0FFFFFFFULL) | lowGlo.lgUMWvaddr); /* Pass back the kernel address we are to use */
}
disable_preemption(); /* Don't move... */
- perproc = getPerProc(); /* Get our per_proc_block */
- mp = (mapping *)&perproc->ppCIOmp; /* Make up for C */
- act->mact.cioRelo = reladd; /* Relocation from user to kernel */
+ mp = (mapping_t *)&(getPerProc()->ppUMWmp); /* Make up for C */
+ thread->machine.umwRelo = reladd; /* Relocation from user to kernel */
mp->mpNestReloc = reladd; /* Relocation from user to kernel */
- act->mact.cioSpace = map->pmap->space; /* Set the address space/pmap lookup ID */
+ thread->machine.umwSpace = map->pmap->space; /* Set the address space/pmap lookup ID */
mp->mpSpace = map->pmap->space; /* Set the address space/pmap lookup ID */
/*
* If we are wrong, and that would be very, very, very rare, the fault handler will fix us up.
*/
- hw_map_seg(map->pmap, copyIOaddr, baddrs); /* Make the entry for the first segment */
+ hw_map_seg(map->pmap, lowGlo.lgUMWvaddr, baddrs); /* Make the entry for the first segment */
enable_preemption(); /* Let's move */
- return ((va & 0x0FFFFFFFULL) | copyIOaddr); /* Pass back the kernel address we are to use */
+ return ((va & 0x0FFFFFFFULL) | lowGlo.lgUMWvaddr); /* Pass back the kernel address we are to use */
}
-/*
- * void ReleaseUserAddressMapping(addr64_t kva)
- *
- * kva = kernel address of the user copy in/out slice
- *
- */
-
-void ReleaseUserAddressSpace(addr64_t kva) {
-
- int i;
- addr64_t nextva, vend, kaddr, baddrs;
- unsigned int msize;
- thread_act_t act;
- mapping *mp;
-
- if(kva == 0) return; /* Handle a 0 */
-
- disable_preemption(); /* Don't move... */
-
- act = current_act(); /* Remember our activation */
-
- if(act->mact.cioSpace == invalSpace) { /* We only support one at a time */
- panic("ReleaseUserAddressMapping: attempt release undefined copy in/out user address space slice\n");
- }
-
- act->mact.cioSpace = invalSpace; /* Invalidate space */
- mp = (mapping *)&per_proc_info[cpu_number()].ppCIOmp; /* Make up for C */
- mp->mpSpace = invalSpace; /* Trash it in the per_proc as well */
-
- hw_blow_seg(copyIOaddr); /* Blow off the first segment */
- hw_blow_seg(copyIOaddr + 0x10000000ULL); /* Blow off the second segment */
-
- enable_preemption(); /* Let's move */
-
- return; /* Let's leave */
-}
-
-
/*
* kern_return_t pmap_boot_map(size)
panic("pmap_boot_map: VM started\n");
}
- size = round_page_32(size); /* Make sure this is in pages */
+ size = round_page(size); /* Make sure this is in pages */
vm_last_addr = vm_last_addr - size; /* Allocate the memory */
return (vm_last_addr + 1); /* Return the vaddr we just allocated */
}
+/*
+ * void pmap_init_sharedpage(void);
+ *
+ * Hack map for the 64-bit commpage
+ */
+
+void pmap_init_sharedpage(vm_offset_t cpg){
+
+ addr64_t cva, cpoff;
+ ppnum_t cpphys;
+
+ sharedPmap = pmap_create(0, FALSE); /* Get a pmap to hold the common segment */
+ if(!sharedPmap) { /* Check for errors */
+ panic("pmap_init_sharedpage: couldn't make sharedPmap\n");
+ }
+
+ for(cpoff = 0; cpoff < _COMM_PAGE_AREA_USED; cpoff += 4096) { /* Step along now */
+
+ cpphys = pmap_find_phys(kernel_pmap, (addr64_t)cpg + cpoff);
+ if(!cpphys) {
+ panic("pmap_init_sharedpage: compage %08X not mapped in kernel\n", cpg + cpoff);
+ }
+
+ cva = mapping_make(sharedPmap, (addr64_t)((uint32_t)_COMM_PAGE_BASE_ADDRESS) + cpoff,
+ cpphys, mmFlgPerm, 1, VM_PROT_READ | VM_PROT_EXECUTE); /* Map the page read/execute only */
+ if(cva) { /* Check for errors */
+ panic("pmap_init_sharedpage: couldn't map commpage page - cva = %016llX\n", cva);
+ }
+
+ }
+
+ return;
+}
+
+
+/*
+ * void pmap_map_sharedpage(pmap_t pmap);
+ *
+ * Maps the last segment in a 64-bit address space
+ *
+ *
+ */
+
+void pmap_map_sharedpage(task_t task, pmap_t pmap){
+
+ kern_return_t ret;
+
+ if(task_has_64BitAddr(task) || _cpu_capabilities & k64Bit) { /* Should we map the 64-bit page -1? */
+ ret = pmap_nest(pmap, sharedPmap, 0xFFFFFFFFF0000000ULL, 0x00000000F0000000ULL,
+ 0x0000000010000000ULL); /* Nest the highest possible segment to map comm page */
+ if(ret != KERN_SUCCESS) { /* Did it work? */
+ panic("pmap_map_sharedpage: couldn't nest shared page - ret = %08X\n", ret);
+ }
+ }
+
+ return;
+}
+
+
+/*
+ * void pmap_unmap_sharedpage(pmap_t pmap);
+ *
+ * Unmaps the last segment in a 64-bit address space
+ *
+ */
+
+void pmap_unmap_sharedpage(pmap_t pmap){
+
+ kern_return_t ret;
+ mapping_t *mp;
+ boolean_t inter;
+ int gotnest;
+ addr64_t nextva;
+
+ if(BootProcInfo.pf.Available & pf64Bit) { /* Are we on a 64-bit machine? */
+
+ inter = ml_set_interrupts_enabled(FALSE); /* Disable interruptions for now */
+ mp = hw_find_map(pmap, 0xFFFFFFFFF0000000ULL, &nextva); /* Find the mapping for this address */
+ if((unsigned int)mp == mapRtBadLk) { /* Did we lock up ok? */
+ panic("pmap_unmap_sharedpage: mapping lock failure - rc = %08X, pmap = %08X\n", mp, pmap); /* Die... */
+ }
+
+ gotnest = 0; /* Assume nothing here */
+ if(mp) {
+ gotnest = ((mp->mpFlags & mpType) == mpNest);
+ /* Remember if we have a nest here */
+ mapping_drop_busy(mp); /* We have everything we need from the mapping */
+ }
+ ml_set_interrupts_enabled(inter); /* Put interrupts back to what they were */
+
+ if(!gotnest) return; /* Leave if there isn't any nesting here */
+
+ ret = pmap_unnest(pmap, 0xFFFFFFFFF0000000ULL); /* Unnest the max 64-bit page */
+
+ if(ret != KERN_SUCCESS) { /* Did it work? */
+ panic("pmap_unmap_sharedpage: couldn't unnest shared page - ret = %08X\n", ret);
+ }
+ }
+
+ return;
+}
+
/* temporary workaround */
boolean_t
-coredumpok(vm_map_t map, vm_offset_t va)
+coredumpok(
+ __unused vm_map_t map,
+ __unused vm_offset_t va)
{
- return TRUE;
+ return TRUE;
+}
+
+
+/*
+ * disable no-execute capability on
+ * the specified pmap
+ */
+void pmap_disable_NX(pmap_t pmap) {
+
+ pmap->pmapFlags |= pmapNXdisabled;
}
projects / apple / xnu.git / blobdiff