[IA64-SGI] - new macros for SGI SN simulator

This patch changes some macros that are used when running kernel on the
SGI simulator.

Signed-off-by: Jack Steiner <steiner@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>

diff --git a/arch/ia64/sn/kernel/io_init.c b/arch/ia64/sn/kernel/io_init.c
index 9e07f54..783eb43 100644 (file)
--- a/arch/ia64/sn/kernel/io_init.c
+++ b/arch/ia64/sn/kernel/io_init.c
@@ -384,7 +384,7 @@ static int __init sn_pci_init(void)
        extern void register_sn_procfs(void);
 #endif
 
-       if (!ia64_platform_is("sn2") || IS_RUNNING_ON_SIMULATOR())
+       if (!ia64_platform_is("sn2") || IS_RUNNING_ON_FAKE_PROM())
                return 0;
 
        /*

diff --git a/arch/ia64/sn/kernel/setup.c b/arch/ia64/sn/kernel/setup.c
index 3e5ba34..22e10d2 100644 (file)
--- a/arch/ia64/sn/kernel/setup.c
+++ b/arch/ia64/sn/kernel/setup.c
@@ -96,6 +96,7 @@ u8 sn_coherency_id;
 EXPORT_SYMBOL(sn_coherency_id);
 u8 sn_region_size;
 EXPORT_SYMBOL(sn_region_size);
+int sn_prom_type;      /* 0=hardware, 1=medusa/realprom, 2=medusa/fakeprom */
 
 short physical_node_map[MAX_PHYSNODE_ID];
 
@@ -354,7 +355,7 @@ void __init sn_setup(char **cmdline_p)
 
        ia64_mark_idle = &snidle;
 
-       /* 
+       /*
         * For the bootcpu, we do this here. All other cpus will make the
         * call as part of cpu_init in slave cpu initialization.
         */
@@ -401,7 +402,7 @@ static void __init sn_init_pdas(char **cmdline_p)
                nodepdaindr[cnode] =
                    alloc_bootmem_node(NODE_DATA(cnode), sizeof(nodepda_t));
                memset(nodepdaindr[cnode], 0, sizeof(nodepda_t));
-               memset(nodepdaindr[cnode]->phys_cpuid, -1, 
+               memset(nodepdaindr[cnode]->phys_cpuid, -1,
                    sizeof(nodepdaindr[cnode]->phys_cpuid));
        }
 
@@ -431,7 +432,7 @@ static void __init sn_init_pdas(char **cmdline_p)
        }
 
        /*
-        * Initialize the per node hubdev.  This includes IO Nodes and 
+        * Initialize the per node hubdev.  This includes IO Nodes and
         * headless/memless nodes.
         */
        for (cnode = 0; cnode < numionodes; cnode++) {
@@ -459,6 +460,14 @@ void __init sn_cpu_init(void)
        int i;
        static int wars_have_been_checked;
 
+       if (smp_processor_id() == 0 && IS_MEDUSA()) {
+               if (ia64_sn_is_fake_prom())
+                       sn_prom_type = 2;
+               else
+                       sn_prom_type = 1;
+               printk("Running on medusa with %s PROM\n", (sn_prom_type == 1) ? "real" : "fake");
+       }
+
        memset(pda, 0, sizeof(pda));
        if (ia64_sn_get_sn_info(0, &sn_hub_info->shub2, &sn_hub_info->nasid_bitmask, &sn_hub_info->nasid_shift,
                                &sn_system_size, &sn_sharing_domain_size, &sn_partition_id,
@@ -524,7 +533,7 @@ void __init sn_cpu_init(void)
         */
        {
                u64 pio1[] = {SH1_PIO_WRITE_STATUS_0, 0, SH1_PIO_WRITE_STATUS_1, 0};
-               u64 pio2[] = {SH2_PIO_WRITE_STATUS_0, SH2_PIO_WRITE_STATUS_1, 
+               u64 pio2[] = {SH2_PIO_WRITE_STATUS_0, SH2_PIO_WRITE_STATUS_1,
                        SH2_PIO_WRITE_STATUS_2, SH2_PIO_WRITE_STATUS_3};
                u64 *pio;
                pio = is_shub1() ? pio1 : pio2;
@@ -556,6 +565,10 @@ static void __init scan_for_ionodes(void)
        int nasid = 0;
        lboard_t *brd;
 
+       /* fakeprom does not support klgraph */
+       if (IS_RUNNING_ON_FAKE_PROM())
+               return;
+
        /* Setup ionodes with memory */
        for (nasid = 0; nasid < MAX_PHYSNODE_ID; nasid += 2) {
                char *klgraph_header;
@@ -567,8 +580,6 @@ static void __init scan_for_ionodes(void)
                cnodeid = -1;
                klgraph_header = __va(ia64_sn_get_klconfig_addr(nasid));
                if (!klgraph_header) {
-                       if (IS_RUNNING_ON_SIMULATOR())
-                               continue;
                        BUG();  /* All nodes must have klconfig tables! */
                }
                cnodeid = nasid_to_cnodeid(nasid);
@@ -634,8 +645,8 @@ int
 nasid_slice_to_cpuid(int nasid, int slice)
 {
        long cpu;
-       
-       for (cpu=0; cpu < NR_CPUS; cpu++) 
+
+       for (cpu=0; cpu < NR_CPUS; cpu++)
                if (cpuid_to_nasid(cpu) == nasid &&
                                        cpuid_to_slice(cpu) == slice)
                        return cpu;

diff --git a/include/asm-ia64/sn/simulator.h b/include/asm-ia64/sn/simulator.h
index 78eb4f8..cf770e2 100644 (file)
--- a/include/asm-ia64/sn/simulator.h
+++ b/include/asm-ia64/sn/simulator.h
@@ -10,16 +10,17 @@
 
 #include <linux/config.h>
 
-#ifdef CONFIG_IA64_SGI_SN_SIM
-
 #define SNMAGIC 0xaeeeeeee8badbeefL
-#define IS_RUNNING_ON_SIMULATOR() ({long sn; asm("mov %0=cpuid[%1]" : "=r"(sn) : "r"(2)); sn == SNMAGIC;})
-
-#define SIMULATOR_SLEEP()      asm("nop.i 0x8beef")
+#define IS_MEDUSA()                    ({long sn; asm("mov %0=cpuid[%1]" : "=r"(sn) : "r"(2)); sn == SNMAGIC;})
 
+#ifdef CONFIG_IA64_SGI_SN_SIM
+#define SIMULATOR_SLEEP()              asm("nop.i 0x8beef")
+#define IS_RUNNING_ON_SIMULATOR()      (sn_prom_type)
+#define IS_RUNNING_ON_FAKE_PROM()      (sn_prom_type == 2)
+extern int sn_prom_type;               /* 0=hardware, 1=medusa/realprom, 2=medusa/fakeprom */
 #else
-
 #define IS_RUNNING_ON_SIMULATOR()      (0)
+#define IS_RUNNING_ON_FAKE_PROM()      (0)
 #define SIMULATOR_SLEEP()
 
 #endif

diff --git a/include/asm-ia64/sn/sn_sal.h b/include/asm-ia64/sn/sn_sal.h
index eb0395a..1455375 100644 (file)
--- a/include/asm-ia64/sn/sn_sal.h
+++ b/include/asm-ia64/sn/sn_sal.h
@@ -132,6 +132,8 @@
 #define SALRET_INVALID_ARG     (-2)
 #define SALRET_ERROR           (-3)
 
+#define SN_SAL_FAKE_PROM                          0x02009999
+
 
 /**
  * sn_sal_rev_major - get the major SGI SAL revision number
@@ -1105,4 +1107,12 @@ ia64_sn_bte_recovery(nasid_t nasid)
        return (int) rv.status;
 }
 
+static inline int
+ia64_sn_is_fake_prom(void)
+{
+       struct ia64_sal_retval rv;
+       SAL_CALL_NOLOCK(rv, SN_SAL_FAKE_PROM, 0, 0, 0, 0, 0, 0, 0);
+       return (rv.status == 0);
+}
+
 #endif /* _ASM_IA64_SN_SN_SAL_H */