[src/trunk]: src/sys/arch/mips/mips Handle the maximum number of colors acros...

[skrll <skrll%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/fa74d9eafd6c
branches:  trunk
changeset: 823919:fa74d9eafd6c
user:      skrll <skrll%NetBSD.org@localhost>
date:      Sun May 14 11:46:22 2017 +0000

description:
Handle the maximum number of colors across [di]caches

diffstat:

 sys/arch/mips/mips/pmap_machdep.c |  49 ++++++++++++++++++++++++++++----------
 1 files changed, 36 insertions(+), 13 deletions(-)

diffs (98 lines):

diff -r e10bd5e0a367 -r fa74d9eafd6c sys/arch/mips/mips/pmap_machdep.c
--- a/sys/arch/mips/mips/pmap_machdep.c Sun May 14 11:39:17 2017 +0000
+++ b/sys/arch/mips/mips/pmap_machdep.c Sun May 14 11:46:22 2017 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: pmap_machdep.c,v 1.16 2017/05/12 06:49:31 skrll Exp $  */
+/*     $NetBSD: pmap_machdep.c,v 1.17 2017/05/14 11:46:22 skrll Exp $  */
 
 /*-
  * Copyright (c) 1998, 2001 The NetBSD Foundation, Inc.
@@ -67,7 +67,7 @@
 
 #include <sys/cdefs.h>
 
-__KERNEL_RCSID(0, "$NetBSD: pmap_machdep.c,v 1.16 2017/05/12 06:49:31 skrll Exp $");
+__KERNEL_RCSID(0, "$NetBSD: pmap_machdep.c,v 1.17 2017/05/14 11:46:22 skrll Exp $");
 
 /*
  *     Manages physical address maps.
@@ -165,6 +165,10 @@
 PMAP_COUNTER(copied_pages, "pages copied");
 extern struct evcnt pmap_evcnt_page_cache_evictions;
 
+u_int pmap_page_cache_alias_mask;
+
+#define pmap_md_cache_indexof(x)       (((vaddr_t)(x)) & pmap_page_cache_alias_mask)
+
 static register_t
 pmap_md_map_ephemeral_page(struct vm_page *pg, bool locked_p, int prot,
     pt_entry_t *old_pte_p)
@@ -196,12 +200,20 @@
                 */
                kpreempt_disable(); // paired with the one in unmap
                struct cpu_info * const ci = curcpu();
-               KASSERT(ci->ci_pmap_dstbase != 0);
+               if (MIPS_CACHE_VIRTUAL_ALIAS) {
+                       KASSERT(ci->ci_pmap_dstbase != 0);
+                       KASSERT(ci->ci_pmap_srcbase != 0);
 
+                       const u_int __diagused mask = pmap_page_cache_alias_mask;
+                       KASSERTMSG((ci->ci_pmap_dstbase & mask) == 0,
+                           "%#"PRIxVADDR, ci->ci_pmap_dstbase);
+                       KASSERTMSG((ci->ci_pmap_srcbase & mask) == 0,
+                           "%#"PRIxVADDR, ci->ci_pmap_srcbase);
+               }
                vaddr_t nva = (prot & VM_PROT_WRITE
                        ? ci->ci_pmap_dstbase
                        : ci->ci_pmap_srcbase)
-                   + mips_cache_indexof(MIPS_CACHE_VIRTUAL_ALIAS
+                   + pmap_md_cache_indexof(MIPS_CACHE_VIRTUAL_ALIAS
                        ? pv->pv_va
                        : pa);
 
@@ -330,8 +342,12 @@
        size_t sysmap_size;
        pt_entry_t *sysmap;
 
-       if (MIPS_CACHE_VIRTUAL_ALIAS && uvmexp.ncolors)
+       if (MIPS_CACHE_VIRTUAL_ALIAS && uvmexp.ncolors) {
                pmap_page_colormask = (uvmexp.ncolors - 1) << PAGE_SHIFT;
+               pmap_page_cache_alias_mask = max(
+                   mips_cache_info.mci_cache_alias_mask,
+                   mips_cache_info.mci_icache_alias_mask);
+       }
 
 #ifdef MULTIPROCESSOR
        pmap_t pm = pmap_kernel();
@@ -509,16 +525,23 @@
 #endif
            || MIPS_CACHE_VIRTUAL_ALIAS
            || MIPS_ICACHE_VIRTUAL_ALIAS) {
-               vsize_t size = uvmexp.ncolors * PAGE_SIZE;
-               if (MIPS_ICACHE_VIRTUAL_ALIAS
-                   && mci->mci_picache_way_size > size)
-                       size = mci->mci_picache_way_size;
-               ci->ci_pmap_dstbase = uvm_km_alloc(kernel_map, size, 0,
-                   UVM_KMF_COLORMATCH | UVM_KMF_VAONLY);
+               vsize_t size = max(mci->mci_pdcache_way_size, mci->mci_picache_way_size);;
+               const u_int __diagused mask = pmap_page_cache_alias_mask;
+
+               ci->ci_pmap_dstbase = uvm_km_alloc(kernel_map, size, size,
+                   UVM_KMF_VAONLY);
+
                KASSERT(ci->ci_pmap_dstbase);
-               ci->ci_pmap_srcbase = uvm_km_alloc(kernel_map, size, 0,
-                   UVM_KMF_COLORMATCH | UVM_KMF_VAONLY);
+               KASSERT(!pmap_md_direct_mapped_vaddr_p(ci->ci_pmap_dstbase));
+               KASSERTMSG((ci->ci_pmap_dstbase & mask) == 0, "%#"PRIxVADDR,
+                   ci->ci_pmap_dstbase);
+
+               ci->ci_pmap_srcbase = uvm_km_alloc(kernel_map, size, size,
+                   UVM_KMF_VAONLY);
                KASSERT(ci->ci_pmap_srcbase);
+               KASSERT(!pmap_md_direct_mapped_vaddr_p(ci->ci_pmap_srcbase));
+               KASSERTMSG((ci->ci_pmap_srcbase & mask) == 0, "%#"PRIxVADDR,
+                   ci->ci_pmap_srcbase);
        }
 }