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/sparc64/kernel/starfire.c b/arch/sparc64/kernel/starfire.c
new file mode 100644
index 0000000..ae859d4
--- /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;
+}
