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!

1 files changed, 339 insertions, 0 deletions

diff --git a/arch/sparc64/prom/misc.c b/arch/sparc64/prom/misc.c
new file mode 100644
index 000000000000..19c44e97e9ee
--- /dev/null
+++ b/arch/sparc64/prom/misc.c
@@ -0,0 +1,339 @@
+/* $Id: misc.c,v 1.20 2001/09/21 03:17:07 kanoj Exp $
+ * misc.c:  Miscellaneous prom functions that don't belong
+ *          anywhere else.
+ *
+ * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
+ * Copyright (C) 1996,1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
+ */
+
+#include <linux/config.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <asm/openprom.h>
+#include <asm/oplib.h>
+#include <asm/system.h>
+
+/* Reset and reboot the machine with the command 'bcommand'. */
+void prom_reboot(char *bcommand)
+{
+        p1275_cmd("boot", P1275_ARG(0, P1275_ARG_IN_STRING) |
+                  P1275_INOUT(1, 0), bcommand);
+}
+
+/* Forth evaluate the expression contained in 'fstring'. */
+void prom_feval(char *fstring)
+{
+        if (!fstring || fstring[0] == 0)
+                return;
+        p1275_cmd("interpret", P1275_ARG(0, P1275_ARG_IN_STRING) |
+                  P1275_INOUT(1, 1), fstring);
+}
+
+/* We want to do this more nicely some day. */
+extern void (*prom_palette)(int);
+
+#ifdef CONFIG_SMP
+extern void smp_capture(void);
+extern void smp_release(void);
+#endif
+
+/* Drop into the prom, with the chance to continue with the 'go'
+ * prom command.
+ */
+void prom_cmdline(void)
+{
+        unsigned long flags;
+
+        local_irq_save(flags);
+
+        if (!serial_console && prom_palette)
+                prom_palette(1);
+
+#ifdef CONFIG_SMP
+        smp_capture();
+#endif
+
+        p1275_cmd("enter", P1275_INOUT(0, 0));
+
+#ifdef CONFIG_SMP
+        smp_release();
+#endif
+
+        if (!serial_console && prom_palette)
+                prom_palette(0);
+
+        local_irq_restore(flags);
+}
+
+#ifdef CONFIG_SMP
+extern void smp_promstop_others(void);
+#endif
+
+/* Drop into the prom, but completely terminate the program.
+ * No chance of continuing.
+ */
+void prom_halt(void)
+{
+#ifdef CONFIG_SMP
+        smp_promstop_others();
+        udelay(8000);
+#endif
+again:
+        p1275_cmd("exit", P1275_INOUT(0, 0));
+        goto again; /* PROM is out to get me -DaveM */
+}
+
+void prom_halt_power_off(void)
+{
+#ifdef CONFIG_SMP
+        smp_promstop_others();
+        udelay(8000);
+#endif
+        p1275_cmd("SUNW,power-off", P1275_INOUT(0, 0));
+
+        /* if nothing else helps, we just halt */
+        prom_halt();
+}
+
+/* Set prom sync handler to call function 'funcp'. */
+void prom_setcallback(callback_func_t funcp)
+{
+        if (!funcp)
+                return;
+        p1275_cmd("set-callback", P1275_ARG(0, P1275_ARG_IN_FUNCTION) |
+                  P1275_INOUT(1, 1), funcp);
+}
+
+/* Get the idprom and stuff it into buffer 'idbuf'.  Returns the
+ * format type.  'num_bytes' is the number of bytes that your idbuf
+ * has space for.  Returns 0xff on error.
+ */
+unsigned char prom_get_idprom(char *idbuf, int num_bytes)
+{
+        int len;
+
+        len = prom_getproplen(prom_root_node, "idprom");
+        if ((len >num_bytes) || (len == -1))
+                return 0xff;
+        if (!prom_getproperty(prom_root_node, "idprom", idbuf, num_bytes))
+                return idbuf[0];
+
+        return 0xff;
+}
+
+/* Get the major prom version number. */
+int prom_version(void)
+{
+        return PROM_P1275;
+}
+
+/* Get the prom plugin-revision. */
+int prom_getrev(void)
+{
+        return prom_rev;
+}
+
+/* Get the prom firmware print revision. */
+int prom_getprev(void)
+{
+        return prom_prev;
+}
+
+/* Install Linux trap table so PROM uses that instead of its own. */
+void prom_set_trap_table(unsigned long tba)
+{
+        p1275_cmd("SUNW,set-trap-table", P1275_INOUT(1, 0), tba);
+}
+
+int mmu_ihandle_cache = 0;
+
+int prom_get_mmu_ihandle(void)
+{
+        int node, ret;
+
+        if (mmu_ihandle_cache != 0)
+                return mmu_ihandle_cache;
+
+        node = prom_finddevice("/chosen");
+        ret = prom_getint(node, "mmu");
+        if (ret == -1 || ret == 0)
+                mmu_ihandle_cache = -1;
+        else
+                mmu_ihandle_cache = ret;
+
+        return ret;
+}
+
+static int prom_get_memory_ihandle(void)
+{
+        static int memory_ihandle_cache;
+        int node, ret;
+
+        if (memory_ihandle_cache != 0)
+                return memory_ihandle_cache;
+
+        node = prom_finddevice("/chosen");
+        ret = prom_getint(node, "memory");
+        if (ret == -1 || ret == 0)
+                memory_ihandle_cache = -1;
+        else
+                memory_ihandle_cache = ret;
+
+        return ret;
+}
+
+/* Load explicit I/D TLB entries. */
+long prom_itlb_load(unsigned long index,
+                    unsigned long tte_data,
+                    unsigned long vaddr)
+{
+        return p1275_cmd("call-method",
+                         (P1275_ARG(0, P1275_ARG_IN_STRING) |
+                          P1275_ARG(2, P1275_ARG_IN_64B) |
+                          P1275_ARG(3, P1275_ARG_IN_64B) |
+                          P1275_INOUT(5, 1)),
+                         "SUNW,itlb-load",
+                         prom_get_mmu_ihandle(),
+                         /* And then our actual args are pushed backwards. */
+                         vaddr,
+                         tte_data,
+                         index);
+}
+
+long prom_dtlb_load(unsigned long index,
+                    unsigned long tte_data,
+                    unsigned long vaddr)
+{
+        return p1275_cmd("call-method",
+                         (P1275_ARG(0, P1275_ARG_IN_STRING) |
+                          P1275_ARG(2, P1275_ARG_IN_64B) |
+                          P1275_ARG(3, P1275_ARG_IN_64B) |
+                          P1275_INOUT(5, 1)),
+                         "SUNW,dtlb-load",
+                         prom_get_mmu_ihandle(),
+                         /* And then our actual args are pushed backwards. */
+                         vaddr,
+                         tte_data,
+                         index);
+}
+
+int prom_map(int mode, unsigned long size,
+             unsigned long vaddr, unsigned long paddr)
+{
+        int ret = p1275_cmd("call-method",
+                            (P1275_ARG(0, P1275_ARG_IN_STRING) |
+                             P1275_ARG(3, P1275_ARG_IN_64B) |
+                             P1275_ARG(4, P1275_ARG_IN_64B) |
+                             P1275_ARG(6, P1275_ARG_IN_64B) |
+                             P1275_INOUT(7, 1)),
+                            "map",
+                            prom_get_mmu_ihandle(),
+                            mode,
+                            size,
+                            vaddr,
+                            0,
+                            paddr);
+
+        if (ret == 0)
+                ret = -1;
+        return ret;
+}
+
+void prom_unmap(unsigned long size, unsigned long vaddr)
+{
+        p1275_cmd("call-method",
+                  (P1275_ARG(0, P1275_ARG_IN_STRING) |
+                   P1275_ARG(2, P1275_ARG_IN_64B) |
+                   P1275_ARG(3, P1275_ARG_IN_64B) |
+                   P1275_INOUT(4, 0)),
+                  "unmap",
+                  prom_get_mmu_ihandle(),
+                  size,
+                  vaddr);
+}
+
+/* Set aside physical memory which is not touched or modified
+ * across soft resets.
+ */
+unsigned long prom_retain(char *name,
+                          unsigned long pa_low, unsigned long pa_high,
+                          long size, long align)
+{
+        /* XXX I don't think we return multiple values correctly.
+         * XXX OBP supposedly returns pa_low/pa_high here, how does
+         * XXX it work?
+         */
+
+        /* If align is zero, the pa_low/pa_high args are passed,
+         * else they are not.
+         */
+        if (align == 0)
+                return p1275_cmd("SUNW,retain",
+                                 (P1275_ARG(0, P1275_ARG_IN_BUF) | P1275_INOUT(5, 2)),
+                                 name, pa_low, pa_high, size, align);
+        else
+                return p1275_cmd("SUNW,retain",
+                                 (P1275_ARG(0, P1275_ARG_IN_BUF) | P1275_INOUT(3, 2)),
+                                 name, size, align);
+}
+
+/* Get "Unumber" string for the SIMM at the given
+ * memory address.  Usually this will be of the form
+ * "Uxxxx" where xxxx is a decimal number which is
+ * etched into the motherboard next to the SIMM slot
+ * in question.
+ */
+int prom_getunumber(int syndrome_code,
+                    unsigned long phys_addr,
+                    char *buf, int buflen)
+{
+        return p1275_cmd("call-method",
+                         (P1275_ARG(0, P1275_ARG_IN_STRING)     |
+                          P1275_ARG(3, P1275_ARG_OUT_BUF)       |
+                          P1275_ARG(6, P1275_ARG_IN_64B)        |
+                          P1275_INOUT(8, 2)),
+                         "SUNW,get-unumber", prom_get_memory_ihandle(),
+                         buflen, buf, P1275_SIZE(buflen),
+                         0, phys_addr, syndrome_code);
+}
+
+/* Power management extensions. */
+void prom_sleepself(void)
+{
+        p1275_cmd("SUNW,sleep-self", P1275_INOUT(0, 0));
+}
+
+int prom_sleepsystem(void)
+{
+        return p1275_cmd("SUNW,sleep-system", P1275_INOUT(0, 1));
+}
+
+int prom_wakeupsystem(void)
+{
+        return p1275_cmd("SUNW,wakeup-system", P1275_INOUT(0, 1));
+}
+
+#ifdef CONFIG_SMP
+void prom_startcpu(int cpunode, unsigned long pc, unsigned long o0)
+{
+        p1275_cmd("SUNW,start-cpu", P1275_INOUT(3, 0), cpunode, pc, o0);
+}
+
+void prom_stopself(void)
+{
+        p1275_cmd("SUNW,stop-self", P1275_INOUT(0, 0));
+}
+
+void prom_idleself(void)
+{
+        p1275_cmd("SUNW,idle-self", P1275_INOUT(0, 0));
+}
+
+void prom_resumecpu(int cpunode)
+{
+        p1275_cmd("SUNW,resume-cpu", P1275_INOUT(1, 0), cpunode);
+}
+#endif