Linux-2.6.12-rc2v2.6.12-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!

1 files changed, 123 insertions, 0 deletions

diff --git a/arch/sparc64/kernel/starfire.c b/arch/sparc64/kernel/starfire.c
new file mode 100644
index 000000000000..ae859d40771e
--- /dev/null
+++ b/arch/sparc64/kernel/starfire.c
@@ -0,0 +1,123 @@
+/* $Id: starfire.c,v 1.10 2001/04/14 21:13:45 davem Exp $
+ * starfire.c: Starfire/E10000 support.
+ *
+ * Copyright (C) 1998 David S. Miller (davem@redhat.com)
+ * Copyright (C) 2000 Anton Blanchard (anton@samba.org)
+ */
+
+#include <linux/kernel.h>
+#include <linux/slab.h>
+
+#include <asm/page.h>
+#include <asm/oplib.h>
+#include <asm/smp.h>
+#include <asm/upa.h>
+#include <asm/starfire.h>
+
+/*
+ * A few places around the kernel check this to see if
+ * they need to call us to do things in a Starfire specific
+ * way.
+ */
+int this_is_starfire = 0;
+
+void check_if_starfire(void)
+{
+        int ssnode = prom_finddevice("/ssp-serial");
+        if (ssnode != 0 && ssnode != -1)
+                this_is_starfire = 1;
+}
+
+void starfire_cpu_setup(void)
+{
+        /* Currently, nothing to do.  */
+}
+
+int starfire_hard_smp_processor_id(void)
+{
+        return upa_readl(0x1fff40000d0UL);
+}
+
+/*
+ * Each Starfire board has 32 registers which perform translation
+ * and delivery of traditional interrupt packets into the extended
+ * Starfire hardware format.  Essentially UPAID's now have 2 more
+ * bits than in all previous Sun5 systems.
+ */
+struct starfire_irqinfo {
+        unsigned long imap_slots[32];
+        unsigned long tregs[32];
+        struct starfire_irqinfo *next;
+        int upaid, hwmid;
+};
+
+static struct starfire_irqinfo *sflist = NULL;
+
+/* Beam me up Scott(McNeil)y... */
+void *starfire_hookup(int upaid)
+{
+        struct starfire_irqinfo *p;
+        unsigned long treg_base, hwmid, i;
+
+        p = kmalloc(sizeof(*p), GFP_KERNEL);
+        if (!p) {
+                prom_printf("starfire_hookup: No memory, this is insane.\n");
+                prom_halt();
+        }
+        treg_base = 0x100fc000000UL;
+        hwmid = ((upaid & 0x3c) << 1) |
+                ((upaid & 0x40) >> 4) |
+                (upaid & 0x3);
+        p->hwmid = hwmid;
+        treg_base += (hwmid << 33UL);
+        treg_base += 0x200UL;
+        for (i = 0; i < 32; i++) {
+                p->imap_slots[i] = 0UL;
+                p->tregs[i] = treg_base + (i * 0x10UL);
+                /* Lets play it safe and not overwrite existing mappings */
+                if (upa_readl(p->tregs[i]) != 0)
+                        p->imap_slots[i] = 0xdeadbeaf;
+        }
+        p->upaid = upaid;
+        p->next = sflist;
+        sflist = p;
+
+        return (void *) p;
+}
+
+unsigned int starfire_translate(unsigned long imap,
+                                unsigned int upaid)
+{
+        struct starfire_irqinfo *p;
+        unsigned int bus_hwmid;
+        unsigned int i;
+
+        bus_hwmid = (((unsigned long)imap) >> 33) & 0x7f;
+        for (p = sflist; p != NULL; p = p->next)
+                if (p->hwmid == bus_hwmid)
+                        break;
+        if (p == NULL) {
+                prom_printf("XFIRE: Cannot find irqinfo for imap %016lx\n",
+                            ((unsigned long)imap));
+                prom_halt();
+        }
+        for (i = 0; i < 32; i++) {
+                if (p->imap_slots[i] == imap ||
+                    p->imap_slots[i] == 0UL)
+                        break;
+        }
+        if (i == 32) {
+                printk("starfire_translate: Are you kidding me?\n");
+                panic("Lucy in the sky....");
+        }
+        p->imap_slots[i] = imap;
+
+        /* map to real upaid */
+        upaid = (((upaid & 0x3c) << 1) |
+                 ((upaid & 0x40) >> 4) |
+                 (upaid & 0x3));
+
+        upa_writel(upaid, p->tregs[i]);
+
+        return i;
+}