[src/trunk]: src/sys/arch/ia64/ia64 Add more from FreeBSD

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

details:   https://anonhg.NetBSD.org/src/rev/60f210142547
branches:  trunk
changeset: 352560:60f210142547
user:      scole <scole%NetBSD.org@localhost>
date:      Sat Apr 08 17:46:01 2017 +0000

description:
Add more from FreeBSD

diffstat:

 sys/arch/ia64/ia64/machdep.c |  71 +++++++++++++++++++++++++++++++++++++++++++-
 1 files changed, 70 insertions(+), 1 deletions(-)

diffs (105 lines):

diff -r 656528007fdb -r 60f210142547 sys/arch/ia64/ia64/machdep.c
--- a/sys/arch/ia64/ia64/machdep.c      Sat Apr 08 17:45:22 2017 +0000
+++ b/sys/arch/ia64/ia64/machdep.c      Sat Apr 08 17:46:01 2017 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: machdep.c,v 1.37 2016/12/23 07:15:27 cherry Exp $      */
+/*     $NetBSD: machdep.c,v 1.38 2017/04/08 17:46:01 scole Exp $       */
 
 /*-
  * Copyright (c) 2003,2004 Marcel Moolenaar
@@ -142,8 +142,10 @@
 uint64_t bus_frequency;
 uint64_t itc_frequency;
 uint64_t ia64_pal_base;
+uint64_t ia64_pal_size;
 uint64_t ia64_port_base;
 
+int ia64_sync_icache_needed = 0;
 
 extern uint64_t ia64_gateway_page[];
 
@@ -254,6 +256,30 @@
 }
 
 void
+map_vhpt(uintptr_t vhpt)
+{
+        pt_entry_t pte;
+        uint64_t psr;
+
+        pte = PTE_PRESENT | PTE_MA_WB | PTE_ACCESSED | PTE_DIRTY |
+               PTE_PL_KERN | PTE_AR_RW;
+        pte |= vhpt & PTE_PPN_MASK;
+
+        __asm __volatile("ptr.d %0,%1" :: "r"(vhpt),
+                        "r"(pmap_vhpt_log2size << 2));
+
+        __asm __volatile("mov   %0=psr" : "=r"(psr));
+        __asm __volatile("rsm   psr.ic|psr.i");
+        ia64_srlz_i();
+        ia64_set_ifa(vhpt);
+        ia64_set_itir(pmap_vhpt_log2size << 2);
+        ia64_srlz_d();
+        __asm __volatile("itr.d dtr[%0]=%1" :: "r"(3), "r"(pte));
+        __asm __volatile("mov   psr.l=%0" :: "r" (psr));
+        ia64_srlz_i();
+}
+
+void
 map_pal_code(void)
 {
        pt_entry_t pte;
@@ -368,6 +394,15 @@
 
        ia64_set_fpsr(IA64_FPSR_DEFAULT);
 
+       /*
+        * Region 6 is direct mapped UC and region 7 is direct mapped
+        * WC. The details of this is controlled by the Alt {I,D}TLB
+        * handlers. Here we just make sure that they have the largest
+        * possible page size to minimise TLB usage.
+        */
+       ia64_set_rr(IA64_RR_BASE(6), (6 << 8) | (LOG2_ID_PAGE_SIZE << 2));
+       ia64_set_rr(IA64_RR_BASE(7), (7 << 8) | (LOG2_ID_PAGE_SIZE << 2));
+       ia64_srlz_d();
 
        /*
         * TODO: Get critical system information (if possible, from the
@@ -793,3 +828,37 @@
 
        return 0; /* TODO: Implement. */
 }
+
+void
+ia64_sync_icache(vaddr_t va, vsize_t sz)
+{
+       vaddr_t lim;
+
+        if (!ia64_sync_icache_needed)
+                return;
+
+        lim = va + sz;
+        while (va < lim) {
+                ia64_fc_i(va);
+                va += 32;       /* XXX */
+        }
+
+        ia64_sync_i();
+        ia64_srlz_i();
+}
+
+/*
+ * Construct a PCB from a trapframe. This is called from kdb_trap() where
+ * we want to start a backtrace from the function that caused us to enter
+ * the debugger. We have the context in the trapframe, but base the trace
+ * on the PCB. The PCB doesn't have to be perfect, as long as it contains
+ * enough for a backtrace.
+ */
+void
+makectx(struct trapframe *tf, struct pcb *pcb)
+{
+        pcb->pcb_special = tf->tf_special;
+        pcb->pcb_special.__spare = ~0UL;        /* XXX see unwind.c */
+        save_callee_saved(&pcb->pcb_preserved);
+        save_callee_saved_fp(&pcb->pcb_preserved_fp);
+}