Author: marius
Date: Sun May  2 19:38:17 2010
New Revision: 207537
URL: http://svn.freebsd.org/changeset/base/207537

Log:
  Add support for SPARC64 V (and where it already makes sense for other
  HAL/Fujitsu) CPUs. For the most part this consists of fleshing out the
  MMU and cache handling, it doesn't add pmap optimizations possible with
  these CPU, yet, though.
  With these changes FreeBSD runs stable on Fujitsu Siemens PRIMEPOWER 250
  and likely also other models based on SPARC64 V like 450, 650 and 850.
  Thanks go to Michael Moll for providing access to a PRIMEPOWER 250.

Added:
  head/sys/sparc64/include/mcntl.h   (contents, props changed)
  head/sys/sparc64/sparc64/zeus.c   (contents, props changed)
Modified:
  head/sys/boot/sparc64/loader/main.c
  head/sys/conf/files.sparc64
  head/sys/sparc64/include/asi.h
  head/sys/sparc64/include/cache.h
  head/sys/sparc64/sparc64/cache.c
  head/sys/sparc64/sparc64/cheetah.c
  head/sys/sparc64/sparc64/identcpu.c
  head/sys/sparc64/sparc64/machdep.c
  head/sys/sparc64/sparc64/mp_locore.S
  head/sys/sparc64/sparc64/mp_machdep.c
  head/sys/sparc64/sparc64/pmap.c
  head/sys/sparc64/sparc64/tick.c

Modified: head/sys/boot/sparc64/loader/main.c
==============================================================================
--- head/sys/boot/sparc64/loader/main.c Sun May  2 19:28:30 2010        
(r207536)
+++ head/sys/boot/sparc64/loader/main.c Sun May  2 19:38:17 2010        
(r207537)
@@ -451,7 +451,8 @@ dtlb_va_to_pa_sun4u(vm_offset_t va)
                reg = dtlb_get_data_sun4u(i);
                wrpr(pstate, pstate, 0);
                reg >>= TD_PA_SHIFT;
-               if (cpu_impl >= CPU_IMPL_ULTRASPARCIII)
+               if (cpu_impl == CPU_IMPL_SPARC64V ||
+                   cpu_impl >= CPU_IMPL_ULTRASPARCIII)
                        return (reg & TD_PA_CH_MASK);
                return (reg & TD_PA_SF_MASK);
        }
@@ -474,7 +475,8 @@ itlb_va_to_pa_sun4u(vm_offset_t va)
                reg = itlb_get_data_sun4u(i);
                wrpr(pstate, pstate, 0);
                reg >>= TD_PA_SHIFT;
-               if (cpu_impl >= CPU_IMPL_ULTRASPARCIII)
+               if (cpu_impl == CPU_IMPL_SPARC64V ||
+                   cpu_impl >= CPU_IMPL_ULTRASPARCIII)
                        return (reg & TD_PA_CH_MASK);
                return (reg & TD_PA_SF_MASK);
        }
@@ -696,6 +698,7 @@ cpu_cpuid_prop_sun4u(void)
 
        switch (cpu_impl) {
        case CPU_IMPL_SPARC64:
+       case CPU_IMPL_SPARC64V:
        case CPU_IMPL_ULTRASPARCI:
        case CPU_IMPL_ULTRASPARCII:
        case CPU_IMPL_ULTRASPARCIIi:
@@ -720,6 +723,7 @@ cpu_get_mid_sun4u(void)
 
        switch (cpu_impl) {
        case CPU_IMPL_SPARC64:
+       case CPU_IMPL_SPARC64V:
        case CPU_IMPL_ULTRASPARCI:
        case CPU_IMPL_ULTRASPARCII:
        case CPU_IMPL_ULTRASPARCIIi:

Modified: head/sys/conf/files.sparc64
==============================================================================
--- head/sys/conf/files.sparc64 Sun May  2 19:28:30 2010        (r207536)
+++ head/sys/conf/files.sparc64 Sun May  2 19:38:17 2010        (r207537)
@@ -138,3 +138,4 @@ sparc64/sparc64/tsb.c               standard
 sparc64/sparc64/uio_machdep.c  standard
 sparc64/sparc64/upa.c          optional        creator
 sparc64/sparc64/vm_machdep.c   standard
+sparc64/sparc64/zeus.c         standard

Modified: head/sys/sparc64/include/asi.h
==============================================================================
--- head/sys/sparc64/include/asi.h      Sun May  2 19:28:30 2010        
(r207536)
+++ head/sys/sparc64/include/asi.h      Sun May  2 19:38:17 2010        
(r207537)
@@ -82,7 +82,10 @@
 #define        ASI_DCACHE_SNOOP_TAG                    0x44    /* US-III Cu */
 
 /* Named ASI_DCUCR on US-III, but is mostly identical except for added bits. */
-#define        ASI_LSU_CTL_REG                         0x45
+#define        ASI_LSU_CTL_REG                         0x45    /* US only */
+
+#define        ASI_MCNTL                               0x45    /* SPARC64 only 
*/
+#define                AA_MCNTL                        0x08
 
 #define        ASI_DCACHE_DATA                         0x46
 #define        ASI_DCACHE_TAG                          0x47
@@ -167,6 +170,8 @@
 #define        ASI_ICACHE_PRE_DECODE                   0x6e    /* US-I, II */
 #define        ASI_ICACHE_PRE_NEXT_FIELD               0x6f    /* US-I, II */
 
+#define        ASI_FLUSH_L1I                           0x67    /* SPARC64 only 
*/
+
 #define        ASI_BLK_AUIP                            0x70
 #define        ASI_BLK_AIUS                            0x71
 

Modified: head/sys/sparc64/include/cache.h
==============================================================================
--- head/sys/sparc64/include/cache.h    Sun May  2 19:28:30 2010        
(r207536)
+++ head/sys/sparc64/include/cache.h    Sun May  2 19:38:17 2010        
(r207537)
@@ -113,6 +113,10 @@ extern cache_flush_t *cache_flush;
 extern dcache_page_inval_t *dcache_page_inval;
 extern icache_page_inval_t *icache_page_inval;
 
+cache_flush_t zeus_cache_flush;
+dcache_page_inval_t zeus_dcache_page_inval;
+icache_page_inval_t zeus_icache_page_inval;
+
 #endif /* KERNEL */
 
 #endif /* !LOCORE */

Added: head/sys/sparc64/include/mcntl.h
==============================================================================
--- /dev/null   00:00:00 1970   (empty, because file is newly added)
+++ head/sys/sparc64/include/mcntl.h    Sun May  2 19:38:17 2010        
(r207537)
@@ -0,0 +1,62 @@
+/*-
+ * Copyright (c) 2010 Marius Strobl <[email protected]>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef        _MACHINE_MCNTL_H
+#define        _MACHINE_MCNTL_H
+
+/*
+ * Definitions for the SPARC64 V, VI, VII and VIIIfx Memory Control Register
+ */
+#define        MCNTL_JPS1_TSBP         (1UL << 8)
+
+#define        MCNTL_RMD_SHIFT         12
+#define        MCNTL_RMD_BITS          2
+#define        MCNTL_RMD_MASK                                                  
\
+       (((1UL << MCNTL_RMD_BITS) - 1) << MCNTL_RMD_SHIFT)
+#define        MCNTL_RMD_FULL          (0UL << MCNTL_RMD_SHIFT)
+#define        MCNTL_RMD_1024          (2UL << MCNTL_RMD_SHIFT)
+#define        MCNTL_RMD_512           (3UL << MCNTL_RMD_SHIFT)
+
+#define        MCNTL_FW_FDTLB          (1UL << 14)
+#define        MCNTL_FW_FITLB          (1UL << 15)
+#define        MCNTL_NC_CACHE          (1UL << 16)
+
+/* The following bits are valid for the SPARC64 VI, VII and VIIIfx only. */
+#define        MCNTL_MPG_SDTLB         (1UL << 6)
+#define        MCNTL_MPG_SITLB         (1UL << 7)
+
+/* The following bits are valid for the SPARC64 VIIIfx only. */
+#define        MCNTL_HPF_SHIFT         18
+#define        MCNTL_HPF_BITS          2
+#define        MCNTL_HPF_MASK                                                  
\
+       (((1UL << MCNTL_HPF_BITS) - 1) << MCNTL_HPF_SHIFT)
+#define        MCNTL_HPF_STRONG        (0UL << MCNTL_HPF_SHIFT)
+#define        MCNTL_HPF_NOT           (1UL << MCNTL_HPF_SHIFT)
+#define        MCNTL_HPF_WEAK          (2UL << MCNTL_HPF_SHIFT)
+
+#endif /* _MACHINE_MCNTL_H */

Modified: head/sys/sparc64/sparc64/cache.c
==============================================================================
--- head/sys/sparc64/sparc64/cache.c    Sun May  2 19:28:30 2010        
(r207536)
+++ head/sys/sparc64/sparc64/cache.c    Sun May  2 19:38:17 2010        
(r207537)
@@ -141,7 +141,12 @@ cache_init(struct pcpu *pcpu)
        if ((pcpu->pc_cache.dc_size &
            ~(1UL << (ffs(pcpu->pc_cache.dc_size) - 1))) != 0)
                panic("cache_init: D$ size not a power of 2");
-       if (((pcpu->pc_cache.dc_size / pcpu->pc_cache.dc_assoc) /
+       /*
+        * For CPUs which don't support unaliasing in hardware ensure that
+        * the data cache doesn't have too many virtual colors.
+        */
+       if (pcpu->pc_impl != CPU_IMPL_SPARC64V &&
+           ((pcpu->pc_cache.dc_size / pcpu->pc_cache.dc_assoc) /
            PAGE_SIZE) != DCACHE_COLORS)
                panic("cache_init: too many D$ colors");
        set = pcpu->pc_cache.ec_size / pcpu->pc_cache.ec_assoc;
@@ -155,12 +160,21 @@ cache_init(struct pcpu *pcpu)
                icache_page_inval = cheetah_icache_page_inval;
                tlb_flush_nonlocked = cheetah_tlb_flush_nonlocked;
                tlb_flush_user = cheetah_tlb_flush_user;
-       } else {
+       } else if (pcpu->pc_impl == CPU_IMPL_SPARC64V) {
+               cache_enable = cheetah_cache_enable;
+               cache_flush = zeus_cache_flush;
+               dcache_page_inval = zeus_dcache_page_inval;
+               icache_page_inval = zeus_icache_page_inval;
+               tlb_flush_nonlocked = cheetah_tlb_flush_nonlocked;
+               tlb_flush_user = cheetah_tlb_flush_user;
+       } else if (pcpu->pc_impl >= CPU_IMPL_ULTRASPARCI &&
+           pcpu->pc_impl < CPU_IMPL_ULTRASPARCIII) {
                cache_enable = spitfire_cache_enable;
                cache_flush = spitfire_cache_flush;
                dcache_page_inval = spitfire_dcache_page_inval;
                icache_page_inval = spitfire_icache_page_inval;
                tlb_flush_nonlocked = spitfire_tlb_flush_nonlocked;
                tlb_flush_user = spitfire_tlb_flush_user;
-       }
+       } else
+               panic("cache_init: unknown CPU");
 }

Modified: head/sys/sparc64/sparc64/cheetah.c
==============================================================================
--- head/sys/sparc64/sparc64/cheetah.c  Sun May  2 19:28:30 2010        
(r207536)
+++ head/sys/sparc64/sparc64/cheetah.c  Sun May  2 19:38:17 2010        
(r207537)
@@ -39,11 +39,13 @@ __FBSDID("$FreeBSD$");
 #include <vm/vm.h>
 #include <vm/pmap.h>
 
+#include <machine/asi.h>
 #include <machine/cache.h>
 #include <machine/cpu.h>
 #include <machine/cpufunc.h>
 #include <machine/dcr.h>
 #include <machine/lsu.h>
+#include <machine/mcntl.h>
 #include <machine/smp.h>
 #include <machine/tlb.h>
 #include <machine/ver.h>
@@ -52,7 +54,8 @@ __FBSDID("$FreeBSD$");
 #define        CHEETAH_ICACHE_TAG_LOWER        0x30
 
 /*
- * CPU-specific initialization
+ * CPU-specific initialization - this is used for both the Sun Cheetah and
+ * later as well as the Fujitsu Zeus and later CPUs.
  */
 void
 cheetah_init(u_int cpu_impl)
@@ -75,6 +78,14 @@ cheetah_init(u_int cpu_impl)
        stxa(AA_IMMU_TSB_NEXT_REG, ASI_IMMU, 0);
        membar(Sync);
 
+       if (cpu_impl == CPU_IMPL_SPARC64V) {
+               /* Ensure MCNTL_JPS1_TSBP is 0. */
+               val = ldxa(AA_MCNTL, ASI_MCNTL);
+               val &= ~MCNTL_JPS1_TSBP;
+               stxa(AA_MCNTL, ASI_MCNTL, val);
+               return;
+       }
+
        /*
         * Configure the first large dTLB to hold 4MB pages (e.g. for direct
         * mappings) for all three contexts and ensure the second one is set
@@ -207,7 +218,7 @@ cheetah_dcache_page_inval(vm_paddr_t spa
  * consistency is maintained by hardware.
  */
 void
-cheetah_icache_page_inval(vm_paddr_t pa)
+cheetah_icache_page_inval(vm_paddr_t pa __unused)
 {
 
 }

Modified: head/sys/sparc64/sparc64/identcpu.c
==============================================================================
--- head/sys/sparc64/sparc64/identcpu.c Sun May  2 19:28:30 2010        
(r207536)
+++ head/sys/sparc64/sparc64/identcpu.c Sun May  2 19:38:17 2010        
(r207537)
@@ -41,7 +41,7 @@ cpu_identify(u_long vers, u_int freq, u_
 
        switch (VER_MANUF(vers)) {
        case 0x04:
-               manus = "HAL";
+               manus = "HAL/Fujitsu";
                break;
        case 0x13:
        case 0x17:
@@ -57,6 +57,27 @@ cpu_identify(u_long vers, u_int freq, u_
        case CPU_IMPL_SPARC64:
                impls = "SPARC64";
                break;
+       case CPU_IMPL_SPARC64II:
+               impls = "SPARC64-II";
+               break;
+       case CPU_IMPL_SPARC64III:
+               impls = "SPARC64-III";
+               break;
+       case CPU_IMPL_SPARC64IV:
+               impls = "SPARC64-IV";
+               break;
+       case CPU_IMPL_SPARC64V:
+               impls = "SPARC64-V";
+               break;
+       case CPU_IMPL_SPARC64VI:
+               impls = "SPARC64-VI";
+               break;
+       case CPU_IMPL_SPARC64VII:
+               impls = "SPARC64-VII";
+               break;
+       case CPU_IMPL_SPARC64VIIIfx:
+               impls = "SPARC64-VIIIfx";
+               break;
        case CPU_IMPL_ULTRASPARCI:
                impls = "UltraSparc-I";
                break;
@@ -67,7 +88,6 @@ cpu_identify(u_long vers, u_int freq, u_
                impls = "UltraSparc-IIi";
                break;
        case CPU_IMPL_ULTRASPARCIIe:
-               /* V9 Manual says `UltraSparc-e'.  I assume this is wrong. */
                impls = "UltraSparc-IIe";
                break;
        case CPU_IMPL_ULTRASPARCIII:

Modified: head/sys/sparc64/sparc64/machdep.c
==============================================================================
--- head/sys/sparc64/sparc64/machdep.c  Sun May  2 19:28:30 2010        
(r207536)
+++ head/sys/sparc64/sparc64/machdep.c  Sun May  2 19:38:17 2010        
(r207537)
@@ -276,6 +276,7 @@ cpu_cpuid_prop(u_int cpu_impl)
 
        switch (cpu_impl) {
        case CPU_IMPL_SPARC64:
+       case CPU_IMPL_SPARC64V:
        case CPU_IMPL_ULTRASPARCI:
        case CPU_IMPL_ULTRASPARCII:
        case CPU_IMPL_ULTRASPARCIIi:
@@ -300,6 +301,7 @@ cpu_get_mid(u_int cpu_impl)
 
        switch (cpu_impl) {
        case CPU_IMPL_SPARC64:
+       case CPU_IMPL_SPARC64V:
        case CPU_IMPL_ULTRASPARCI:
        case CPU_IMPL_ULTRASPARCII:
        case CPU_IMPL_ULTRASPARCIIi:
@@ -343,7 +345,8 @@ sparc64_init(caddr_t mdp, u_long o1, u_l
        /*
         * Do CPU-specific initialization.
         */
-       if (cpu_impl >= CPU_IMPL_ULTRASPARCIII)
+       if (cpu_impl == CPU_IMPL_SPARC64V ||
+           cpu_impl >= CPU_IMPL_ULTRASPARCIII)
                cheetah_init(cpu_impl);
 
        /*
@@ -491,6 +494,7 @@ sparc64_init(caddr_t mdp, u_long o1, u_l
        if (cpu_use_vis) {
                switch (cpu_impl) {
                case CPU_IMPL_SPARC64:
+               case CPU_IMPL_SPARC64V:
                case CPU_IMPL_ULTRASPARCI:
                case CPU_IMPL_ULTRASPARCII:
                case CPU_IMPL_ULTRASPARCIIi:

Modified: head/sys/sparc64/sparc64/mp_locore.S
==============================================================================
--- head/sys/sparc64/sparc64/mp_locore.S        Sun May  2 19:28:30 2010        
(r207536)
+++ head/sys/sparc64/sparc64/mp_locore.S        Sun May  2 19:38:17 2010        
(r207537)
@@ -200,19 +200,25 @@ ENTRY(mp_startup)
        srlx    %l1, VER_IMPL_SHIFT, %l1
        sll     %l1, VER_IMPL_SIZE, %l1
        srl     %l1, VER_IMPL_SIZE, %l1
+       cmp     %l1, CPU_IMPL_SPARC64V
+       bl      %icc, 4f
+        nop
+       cmp     %l1, CPU_IMPL_ULTRASPARCI
+       bl      %icc, 2f
+        nop
        cmp     %l1, CPU_IMPL_ULTRASPARCIII
        bl      %icc, 3f
         nop
-       mov     CPU_STICKSYNC, %l2
+2:     mov     CPU_STICKSYNC, %l2
        membar  #StoreLoad
        stw     %l2, [%l0 + CSA_STATE]
 
-2:     ldx     [%l0 + CSA_STICK], %l2
-       brz     %l2, 2b
+3:     ldx     [%l0 + CSA_STICK], %l2
+       brz     %l2, 3b
         nop
        wr      %l2, 0, %asr24
 
-3:     call    cpu_get_mid
+4:     call    cpu_get_mid
         mov    %l1, %o0
 
        /*
@@ -225,9 +231,9 @@ ENTRY(mp_startup)
        /*
         * Wait till its our turn to bootstrap.
         */
-4:     lduw    [%l0 + CSA_MID], %l1
+5:     lduw    [%l0 + CSA_MID], %l1
        cmp     %l1, %o0
-       bne     %xcc, 4b
+       bne     %xcc, 5b
         nop
 
        add     %l0, CSA_TTES, %l1
@@ -236,7 +242,7 @@ ENTRY(mp_startup)
        /*
         * Map the per-CPU pages.
         */
-5:     sllx    %l2, TTE_SHIFT, %l3
+6:     sllx    %l2, TTE_SHIFT, %l3
        add     %l1, %l3, %l3
 
        ldx     [%l3 + TTE_VPN], %l4
@@ -251,7 +257,7 @@ ENTRY(mp_startup)
 
        add     %l2, 1, %l2
        cmp     %l2, PCPU_PAGES
-       bne     %xcc, 5b
+       bne     %xcc, 6b
         nop
 
        /*

Modified: head/sys/sparc64/sparc64/mp_machdep.c
==============================================================================
--- head/sys/sparc64/sparc64/mp_machdep.c       Sun May  2 19:28:30 2010        
(r207536)
+++ head/sys/sparc64/sparc64/mp_machdep.c       Sun May  2 19:38:17 2010        
(r207537)
@@ -164,7 +164,8 @@ mp_init(u_int cpu_impl)
        if (cpu_impl == CPU_IMPL_ULTRASPARCIIIi ||
            cpu_impl == CPU_IMPL_ULTRASPARCIIIip)
                isjbus = 1;
-       if (cpu_impl >= CPU_IMPL_ULTRASPARCIII)
+       if (cpu_impl == CPU_IMPL_SPARC64V ||
+           cpu_impl >= CPU_IMPL_ULTRASPARCIII)
                cpu_ipi_selected = cheetah_ipi_selected;
        else
                cpu_ipi_selected = spitfire_ipi_selected;
@@ -315,7 +316,8 @@ ap_start(phandle_t node, u_int mid, u_in
                ;
        membar(StoreLoad);
        csa->csa_tick = rd(tick);
-       if (cpu_impl >= CPU_IMPL_ULTRASPARCIII) {
+       if (cpu_impl == CPU_IMPL_SPARC64V ||
+           cpu_impl >= CPU_IMPL_ULTRASPARCIII) {
                while (csa->csa_state != CPU_STICKSYNC)
                        ;
                membar(StoreLoad);
@@ -411,7 +413,8 @@ cpu_mp_bootstrap(struct pcpu *pc)
        csa = &cpu_start_args;
 
        /* Do CPU-specific initialization. */
-       if (pc->pc_impl >= CPU_IMPL_ULTRASPARCIII)
+       if (pc->pc_impl == CPU_IMPL_SPARC64V ||
+           pc->pc_impl >= CPU_IMPL_ULTRASPARCIII)
                cheetah_init(pc->pc_impl);
        /*
         * Enable the caches.  Note that his may include applying workarounds.

Modified: head/sys/sparc64/sparc64/pmap.c
==============================================================================
--- head/sys/sparc64/sparc64/pmap.c     Sun May  2 19:28:30 2010        
(r207536)
+++ head/sys/sparc64/sparc64/pmap.c     Sun May  2 19:38:17 2010        
(r207537)
@@ -528,7 +528,8 @@ pmap_bootstrap(u_int cpu_impl)
                        tp->tte_data =
                            ((translations[i].om_tte &
                            ~((TD_SOFT2_MASK << TD_SOFT2_SHIFT) |
-                           (cpu_impl < CPU_IMPL_ULTRASPARCIII ?
+                           (cpu_impl >= CPU_IMPL_ULTRASPARCI &&
+                           cpu_impl < CPU_IMPL_ULTRASPARCIII ?
                            (TD_DIAG_SF_MASK << TD_DIAG_SF_SHIFT) :
                            (TD_RSVD_CH_MASK << TD_RSVD_CH_SHIFT)) |
                            (TD_SOFT_MASK << TD_SOFT_SHIFT))) | TD_EXEC) +
@@ -704,16 +705,16 @@ retry:
                if (va >= VM_MIN_DIRECT_ADDRESS) {
                        tp = NULL;
                        m = PHYS_TO_VM_PAGE(TLB_DIRECT_TO_PHYS(va));
-                       (void)vm_page_pa_tryrelock(pm, TLB_DIRECT_TO_PHYS(va), 
&pa);
+                       (void)vm_page_pa_tryrelock(pm, TLB_DIRECT_TO_PHYS(va),
+                           &pa);
                        vm_page_hold(m);
                } else {
                        tp = tsb_kvtotte(va);
                        if ((tp->tte_data & TD_V) == 0)
                                tp = NULL;
                }
-       } else {
+       } else
                tp = tsb_tte_lookup(pm, va);
-       }
        if (tp != NULL && ((tp->tte_data & TD_SW) ||
            (prot & VM_PROT_WRITE) == 0)) {
                if (vm_page_pa_tryrelock(pm, TTE_GET_PA(tp), &pa))

Modified: head/sys/sparc64/sparc64/tick.c
==============================================================================
--- head/sys/sparc64/sparc64/tick.c     Sun May  2 19:28:30 2010        
(r207536)
+++ head/sys/sparc64/sparc64/tick.c     Sun May  2 19:38:17 2010        
(r207537)
@@ -120,7 +120,8 @@ cpu_initclocks(void)
                 */
        } else {
                clock = PCPU_GET(clock);
-               intr_setup(PIL_TICK, PCPU_GET(impl) < CPU_IMPL_ULTRASPARCIII ?
+               intr_setup(PIL_TICK, PCPU_GET(impl) >= CPU_IMPL_ULTRASPARCI &&
+                   PCPU_GET(impl) < CPU_IMPL_ULTRASPARCIII ?
                    tick_hardclock_bbwar : tick_hardclock, -1, NULL, NULL);
                set_cputicker(tick_cputicks, clock, 0);
        }
@@ -325,7 +326,8 @@ void
 tick_clear(u_int cpu_impl)
 {
 
-       if (cpu_impl >= CPU_IMPL_ULTRASPARCIII)
+       if (cpu_impl == CPU_IMPL_SPARC64V ||
+           cpu_impl >= CPU_IMPL_ULTRASPARCIII)
                wrstick(0, 0);
        wrpr(tick, 0, 0);
 }
@@ -334,7 +336,8 @@ void
 tick_stop(u_int cpu_impl)
 {
 
-       if (cpu_impl >= CPU_IMPL_ULTRASPARCIII)
+       if (cpu_impl == CPU_IMPL_SPARC64V ||
+           cpu_impl >= CPU_IMPL_ULTRASPARCIII)
                wrstickcmpr(1L << 63, 0);
        wrtickcmpr(1L << 63, 0);
 }

Added: head/sys/sparc64/sparc64/zeus.c
==============================================================================
--- /dev/null   00:00:00 1970   (empty, because file is newly added)
+++ head/sys/sparc64/sparc64/zeus.c     Sun May  2 19:38:17 2010        
(r207537)
@@ -0,0 +1,65 @@
+/*-
+ * Copyright (c) 2010 Marius Strobl <[email protected]>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/systm.h>
+
+#include <machine/asi.h>
+#include <machine/cache.h>
+#include <machine/cpufunc.h>
+
+/*
+ * Flush all lines from the level 1 caches.
+ */
+void
+zeus_cache_flush(void)
+{
+
+       stxa_sync(0, ASI_FLUSH_L1I, 0);
+}
+
+/*
+ * Flush a physical page from the data cache.  Data cache consistency is
+ * maintained by hardware.
+ */
+void
+zeus_dcache_page_inval(vm_paddr_t spa __unused)
+{
+
+}
+
+/*
+ * Flush a physical page from the intsruction cache.  Instruction cache
+ * consistency is maintained by hardware.
+ */
+void
+zeus_icache_page_inval(vm_paddr_t pa __unused)
+{
+
+}
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