Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/arch/mips/sgi-ip27/ip27-klnuma.c b/arch/mips/sgi-ip27/ip27-klnuma.c
new file mode 100644
index 0000000..41c3f40
--- /dev/null
+++ b/arch/mips/sgi-ip27/ip27-klnuma.c
@@ -0,0 +1,135 @@
+/*
+ * Ported from IRIX to Linux by Kanoj Sarcar, 06/08/00.
+ * Copyright 2000 - 2001 Silicon Graphics, Inc.
+ * Copyright 2000 - 2001 Kanoj Sarcar (kanoj@sgi.com)
+ */
+#include <linux/config.h>
+#include <linux/init.h>
+#include <linux/mmzone.h>
+#include <linux/kernel.h>
+#include <linux/nodemask.h>
+#include <linux/string.h>
+
+#include <asm/page.h>
+#include <asm/sections.h>
+#include <asm/smp.h>
+#include <asm/sn/types.h>
+#include <asm/sn/arch.h>
+#include <asm/sn/gda.h>
+#include <asm/sn/hub.h>
+#include <asm/sn/mapped_kernel.h>
+#include <asm/sn/sn_private.h>
+
+static cpumask_t ktext_repmask;
+
+/*
+ * XXX - This needs to be much smarter about where it puts copies of the
+ * kernel. For example, we should never put a copy on a headless node,
+ * and we should respect the topology of the machine.
+ */
+void __init setup_replication_mask()
+{
+ cnodeid_t cnode;
+
+ /* Set only the master cnode's bit. The master cnode is always 0. */
+ cpus_clear(ktext_repmask);
+ cpu_set(0, ktext_repmask);
+
+#ifdef CONFIG_REPLICATE_KTEXT
+#ifndef CONFIG_MAPPED_KERNEL
+#error Kernel replication works with mapped kernel support. No calias support.
+#endif
+ for_each_online_node(cnode) {
+ if (cnode == 0)
+ continue;
+ /* Advertise that we have a copy of the kernel */
+ cpu_set(cnode, ktext_repmask);
+ }
+#endif
+ /* Set up a GDA pointer to the replication mask. */
+ GDA->g_ktext_repmask = &ktext_repmask;
+}
+
+
+static __init void set_ktext_source(nasid_t client_nasid, nasid_t server_nasid)
+{
+ cnodeid_t client_cnode;
+ kern_vars_t *kvp;
+
+ client_cnode = NASID_TO_COMPACT_NODEID(client_nasid);
+
+ kvp = &hub_data(client_nasid)->kern_vars;
+
+ KERN_VARS_ADDR(client_nasid) = (unsigned long)kvp;
+
+ kvp->kv_magic = KV_MAGIC;
+ kvp->kv_ro_nasid = server_nasid;
+ kvp->kv_rw_nasid = master_nasid;
+ kvp->kv_ro_baseaddr = NODE_CAC_BASE(server_nasid);
+ kvp->kv_rw_baseaddr = NODE_CAC_BASE(master_nasid);
+ printk("REPLICATION: ON nasid %d, ktext from nasid %d, kdata from nasid %d\n", client_nasid, server_nasid, master_nasid);
+}
+
+/* XXX - When the BTE works, we should use it instead of this. */
+static __init void copy_kernel(nasid_t dest_nasid)
+{
+ unsigned long dest_kern_start, source_start, source_end, kern_size;
+
+ source_start = (unsigned long) _stext;
+ source_end = (unsigned long) _etext;
+ kern_size = source_end - source_start;
+
+ dest_kern_start = CHANGE_ADDR_NASID(MAPPED_KERN_RO_TO_K0(source_start),
+ dest_nasid);
+ memcpy((void *)dest_kern_start, (void *)source_start, kern_size);
+}
+
+void __init replicate_kernel_text()
+{
+ cnodeid_t cnode;
+ nasid_t client_nasid;
+ nasid_t server_nasid;
+
+ server_nasid = master_nasid;
+
+ /* Record where the master node should get its kernel text */
+ set_ktext_source(master_nasid, master_nasid);
+
+ for_each_online_node(cnode) {
+ if (cnode == 0)
+ continue;
+ client_nasid = COMPACT_TO_NASID_NODEID(cnode);
+
+ /* Check if this node should get a copy of the kernel */
+ if (cpu_isset(cnode, ktext_repmask)) {
+ server_nasid = client_nasid;
+ copy_kernel(server_nasid);
+ }
+
+ /* Record where this node should get its kernel text */
+ set_ktext_source(client_nasid, server_nasid);
+ }
+}
+
+/*
+ * Return pfn of first free page of memory on a node. PROM may allocate
+ * data structures on the first couple of pages of the first slot of each
+ * node. If this is the case, getfirstfree(node) > getslotstart(node, 0).
+ */
+pfn_t node_getfirstfree(cnodeid_t cnode)
+{
+ unsigned long loadbase = REP_BASE;
+ nasid_t nasid = COMPACT_TO_NASID_NODEID(cnode);
+ unsigned long offset;
+
+#ifdef CONFIG_MAPPED_KERNEL
+ loadbase += 16777216;
+#endif
+ offset = PAGE_ALIGN((unsigned long)(&_end)) - loadbase;
+ if ((cnode == 0) || (cpu_isset(cnode, ktext_repmask)))
+ return (TO_NODE(nasid, offset) >> PAGE_SHIFT);
+ else
+ return (KDM_TO_PHYS(PAGE_ALIGN(SYMMON_STK_ADDR(nasid, 0))) >>
+ PAGE_SHIFT);
+}
+