patch-2.1.51 linux/arch/sparc64/kernel/ebus.c

• Lines: 170
• Date: Sat Aug 16 09:51:08 1997
• Orig file: v2.1.50/linux/arch/sparc64/kernel/ebus.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.1.50/linux/arch/sparc64/kernel/ebus.c linux/arch/sparc64/kernel/ebus.c
@@ -0,0 +1,169 @@
+/* $Id: ebus.c,v 1.2 1997/08/15 06:44:13 davem Exp $
+ * ebus.c: PCI to EBus bridge device.
+ *
+ * Copyright (C) 1997  Eddie C. Dost  (ecd@skynet.be)
+ */
+
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/string.h>
+
+#include <asm/system.h>
+#include <asm/pbm.h>
+#include <asm/ebus.h>
+#include <asm/oplib.h>
+#include <asm/bpp.h>
+
+struct linux_ebus *ebus_chain = 0;
+
+static char lbuf[128];
+
+extern void prom_ebus_ranges_init(struct linux_ebus *);
+
+#ifdef CONFIG_SUN_OPENPROMIO
+extern int openprom_init(void);
+#endif
+#ifdef CONFIG_SUN_MOSTEK_RTC
+extern int rtc_init(void);
+#endif
+#ifdef CONFIG_SPARCAUDIO
+extern int sparcaudio_init(void);
+#endif
+#ifdef CONFIG_SUN_AUXIO
+extern void auxio_probe(void);
+#endif
+
+__initfunc(void fill_ebus_device(int node, struct linux_ebus_device *dev))
+{
+	int irqs[PROMINTR_MAX];
+	int i, len;
+
+	dev->prom_node = node;
+	prom_getstring(node, "name", lbuf, sizeof(lbuf));
+	strcpy(dev->prom_name, lbuf);
+
+	len = prom_getproperty(node, "reg", (void *)dev->regs,
+			       sizeof(dev->regs));
+	if (len % sizeof(struct linux_prom_registers)) {
+		prom_printf("UGH: proplen for %s was %d, need multiple of %d\n",
+			    dev->prom_name, len,
+			    (int)sizeof(struct linux_prom_registers));
+		panic(__FUNCTION__);
+	}
+	dev->num_registers = len / sizeof(struct linux_prom_registers);
+
+	prom_apply_ebus_ranges(dev->parent, dev->regs, dev->num_registers);
+#if 0 /* XXX No longer exists/needed in new framework... */
+	prom_apply_pbm_ranges(dev->parent->parent, dev->regs,
+			      dev->num_registers);
+#endif
+
+	len = prom_getproperty(node, "interrupts", (char *)&irqs, sizeof(irqs));
+	if ((len == -1) || (len == 0)) {
+		dev->irqs[0].pri = 0;
+		dev->num_irqs = 0;
+	} else {
+		dev->num_irqs = len / sizeof(irqs[0]);
+		for (i = 0; i < dev->num_irqs; i++)
+			dev->irqs[i].pri = irqs[i];
+	}
+
+	printk("Found '%s' at %x.%08x", dev->prom_name,
+	       dev->regs[0].which_io, dev->regs[0].phys_addr);
+	if (dev->num_irqs) {
+		printk(" IRQ%s", dev->num_irqs > 1 ? "s" : "");
+		for (i = 0; i < dev->num_irqs; i++)
+			printk(" %03x", dev->irqs[i].pri);
+	}
+	printk("\n");
+}
+
+__initfunc(unsigned long ebus_init(unsigned long memory_start,
+				   unsigned long memory_end))
+{
+	struct linux_ebus_device *dev;
+	struct linux_ebus *ebus;
+	int nd, ebusnd, topnd;
+	int num_ebus = 0;
+
+#ifndef CONFIG_PCI
+	return memory_start;
+#endif
+
+	memory_start = ((memory_start + 7) & (~7));
+
+	topnd = psycho_root->pbm_B.prom_node;
+	if (!topnd)
+		return memory_start;
+
+	ebusnd = prom_searchsiblings(prom_getchild(topnd), "ebus");
+	if (ebusnd == 0) {
+		printk("EBUS: No EBUS's found.\n");
+		return memory_start;
+	}
+
+	ebus_chain = ebus = (struct linux_ebus *)memory_start;
+	memory_start += sizeof(struct linux_ebus);
+	ebus->next = 0;
+
+	while (ebusnd) {
+		printk("ebus%d: ", num_ebus);
+
+		prom_getstring(ebusnd, "name", lbuf, sizeof(lbuf));
+		ebus->prom_node = ebusnd;
+		strcpy(ebus->prom_name, lbuf);
+		ebus->parent = &psycho_root->pbm_B;
+
+		prom_ebus_ranges_init(ebus);
+
+		nd = prom_getchild(ebusnd);
+		ebus->devices = (struct linux_ebus_device *)memory_start;
+		memory_start += sizeof(struct linux_ebus_device);
+
+		dev = ebus->devices;
+		dev->next = 0;
+		dev->parent = ebus;
+		fill_ebus_device(nd, dev);
+
+		while ((nd = prom_getsibling(nd))) {
+			dev->next = (struct linux_ebus_device *)memory_start;
+			memory_start += sizeof(struct linux_ebus_device);
+
+			dev = dev->next;
+			dev->next = 0;
+			dev->parent = ebus;
+			fill_ebus_device(nd, dev);
+		}
+
+		ebusnd = prom_searchsiblings(prom_getsibling(ebusnd), "ebus");
+		++num_ebus;
+	}
+
+#ifdef CONFIG_SUN_OPENPROMIO
+	openprom_init();
+#endif
+#ifdef CONFIG_SUN_MOSTEK_RTC
+	rtc_init();
+#endif
+#ifdef CONFIG_SPARCAUDIO
+	sparcaudio_init();
+#endif
+#ifdef CONFIG_SUN_BPP
+	bpp_init();
+#endif
+#ifdef CONFIG_SUN_AUXIO
+	if (sparc_cpu_model == sun4u)
+		auxio_probe();
+#endif
+#ifdef __sparc_v9__
+	if (sparc_cpu_model == sun4u) {
+		extern void sun4u_start_timers(void);
+		extern void clock_probe(void);
+
+		sun4u_start_timers();
+		clock_probe();
+	}
+#endif
+	return memory_start;
+}