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, 361 insertions, 0 deletions

diff --git a/arch/sparc/kernel/ebus.c b/arch/sparc/kernel/ebus.c
new file mode 100644
index 00000000000..1754192c69d
--- /dev/null
+++ b/arch/sparc/kernel/ebus.c
@@ -0,0 +1,361 @@
+/* $Id: ebus.c,v 1.20 2002/01/05 01:13:43 davem Exp $
+ * ebus.c: PCI to EBus bridge device.
+ *
+ * Copyright (C) 1997  Eddie C. Dost  (ecd@skynet.be)
+ *
+ * Adopted for sparc by V. Roganov and G. Raiko.
+ * Fixes for different platforms by Pete Zaitcev.
+ */
+
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+
+#include <asm/system.h>
+#include <asm/page.h>
+#include <asm/pbm.h>
+#include <asm/ebus.h>
+#include <asm/io.h>
+#include <asm/oplib.h>
+#include <asm/bpp.h>
+
+struct linux_ebus *ebus_chain = 0;
+
+/* We are together with pcic.c under CONFIG_PCI. */
+extern unsigned int pcic_pin_to_irq(unsigned int, char *name);
+
+/*
+ * IRQ Blacklist
+ * Here we list PROMs and systems that are known to supply crap as IRQ numbers.
+ */
+struct ebus_device_irq {
+	char *name;
+	unsigned int pin;
+};
+
+struct ebus_system_entry {
+	char *esname;
+	struct ebus_device_irq *ipt;
+};
+
+static struct ebus_device_irq je1_1[] = {
+	{ "8042",		 3 },
+	{ "SUNW,CS4231",	 0 },
+	{ "parallel",		 0 },
+	{ "se",			 2 },
+	{ 0, 0 }
+};
+
+/*
+ * Gleb's JE1 supplied reasonable pin numbers, but mine did not (OBP 2.32).
+ * Blacklist the sucker... Note that Gleb's system will work.
+ */
+static struct ebus_system_entry ebus_blacklist[] = {
+	{ "SUNW,JavaEngine1", je1_1 },
+	{ 0, 0 }
+};
+
+static struct ebus_device_irq *ebus_blackp = NULL;
+
+/*
+ */
+static inline unsigned long ebus_alloc(size_t size)
+{
+	return (unsigned long)kmalloc(size, GFP_ATOMIC);
+}
+
+/*
+ */
+int __init ebus_blacklist_irq(char *name)
+{
+	struct ebus_device_irq *dp;
+
+	if ((dp = ebus_blackp) != NULL) {
+		for (; dp->name != NULL; dp++) {
+			if (strcmp(name, dp->name) == 0) {
+				return pcic_pin_to_irq(dp->pin, name);
+			}
+		}
+	}
+	return 0;
+}
+
+void __init fill_ebus_child(int node, struct linux_prom_registers *preg,
+				struct linux_ebus_child *dev)
+{
+	int regs[PROMREG_MAX];
+	int irqs[PROMREG_MAX];
+	char lbuf[128];
+	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 *)regs, sizeof(regs));
+	if (len == -1) len = 0;
+	dev->num_addrs = len / sizeof(regs[0]);
+
+	for (i = 0; i < dev->num_addrs; i++) {
+		if (regs[i] >= dev->parent->num_addrs) {
+			prom_printf("UGH: property for %s was %d, need < %d\n",
+				    dev->prom_name, len, dev->parent->num_addrs);
+			panic(__FUNCTION__);
+		}
+		dev->resource[i].start = dev->parent->resource[regs[i]].start; /* XXX resource */
+	}
+
+	for (i = 0; i < PROMINTR_MAX; i++)
+		dev->irqs[i] = PCI_IRQ_NONE;
+
+	if ((dev->irqs[0] = ebus_blacklist_irq(dev->prom_name)) != 0) {
+		dev->num_irqs = 1;
+	} else if ((len = prom_getproperty(node, "interrupts",
+	    (char *)&irqs, sizeof(irqs))) == -1 || len == 0) {
+		dev->num_irqs = 0;
+		dev->irqs[0] = 0;
+		if (dev->parent->num_irqs != 0) {
+			dev->num_irqs = 1;
+			dev->irqs[0] = dev->parent->irqs[0];
+/* P3 */ /* printk("EBUS: dev %s irq %d from parent\n", dev->prom_name, dev->irqs[0]); */
+		}
+	} else {
+		dev->num_irqs = len / sizeof(irqs[0]);
+		if (irqs[0] == 0 || irqs[0] >= 8) {
+			/*
+			 * XXX Zero is a valid pin number...
+			 * This works as long as Ebus is not wired to INTA#.
+			 */
+			printk("EBUS: %s got bad irq %d from PROM\n",
+			    dev->prom_name, irqs[0]);
+			dev->num_irqs = 0;
+			dev->irqs[0] = 0;
+		} else {
+			dev->irqs[0] = pcic_pin_to_irq(irqs[0], dev->prom_name);
+		}
+	}
+}
+
+void __init fill_ebus_device(int node, struct linux_ebus_device *dev)
+{
+	struct linux_prom_registers regs[PROMREG_MAX];
+	struct linux_ebus_child *child;
+	int irqs[PROMINTR_MAX];
+	char lbuf[128];
+	int i, n, len;
+	unsigned long baseaddr;
+
+	dev->prom_node = node;
+	prom_getstring(node, "name", lbuf, sizeof(lbuf));
+	strcpy(dev->prom_name, lbuf);
+
+	len = prom_getproperty(node, "reg", (void *)regs, sizeof(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_addrs = len / sizeof(struct linux_prom_registers);
+
+	for (i = 0; i < dev->num_addrs; i++) {
+		/*
+		 * XXX Collect JE-1 PROM
+		 * 
+		 * Example - JS-E with 3.11:
+		 *  /ebus
+		 *      regs 
+		 *        0x00000000, 0x0, 0x00000000, 0x0, 0x00000000,
+		 *        0x82000010, 0x0, 0xf0000000, 0x0, 0x01000000,
+		 *        0x82000014, 0x0, 0x38800000, 0x0, 0x00800000,
+		 *      ranges
+		 *        0x00, 0x00000000, 0x02000010, 0x0, 0x0, 0x01000000,
+		 *        0x01, 0x01000000, 0x02000014, 0x0, 0x0, 0x00800000,
+		 *  /ebus/8042
+		 *      regs
+		 *        0x00000001, 0x00300060, 0x00000008,
+		 *        0x00000001, 0x00300060, 0x00000008,
+		 */
+		n = regs[i].which_io;
+		if (n >= 4) {
+			/* XXX This is copied from old JE-1 by Gleb. */
+			n = (regs[i].which_io - 0x10) >> 2;
+		} else {
+			;
+		}
+
+/*
+ * XXX Now as we have regions, why don't we make an on-demand allocation...
+ */
+		dev->resource[i].start = 0;
+		if ((baseaddr = dev->bus->self->resource[n].start +
+		    regs[i].phys_addr) != 0) {
+			/* dev->resource[i].name = dev->prom_name; */
+			if ((baseaddr = (unsigned long) ioremap(baseaddr,
+			    regs[i].reg_size)) == 0) {
+				panic("ebus: unable to remap dev %s",
+				    dev->prom_name);
+			}
+		}
+		dev->resource[i].start = baseaddr;	/* XXX Unaligned */
+	}
+
+	for (i = 0; i < PROMINTR_MAX; i++)
+		dev->irqs[i] = PCI_IRQ_NONE;
+
+	if ((dev->irqs[0] = ebus_blacklist_irq(dev->prom_name)) != 0) {
+		dev->num_irqs = 1;
+	} else if ((len = prom_getproperty(node, "interrupts",
+	    (char *)&irqs, sizeof(irqs))) == -1 || len == 0) {
+		dev->num_irqs = 0;
+		if ((dev->irqs[0] = dev->bus->self->irq) != 0) {
+			 dev->num_irqs = 1;
+/* P3 */ /* printk("EBUS: child %s irq %d from parent\n", dev->prom_name, dev->irqs[0]); */
+		}
+	} else {
+		dev->num_irqs = 1;  /* dev->num_irqs = len / sizeof(irqs[0]); */
+		if (irqs[0] == 0 || irqs[0] >= 8) {
+			/* See above for the parent. XXX */
+			printk("EBUS: %s got bad irq %d from PROM\n",
+			    dev->prom_name, irqs[0]);
+			dev->num_irqs = 0;
+			dev->irqs[0] = 0;
+		} else {
+			dev->irqs[0] = pcic_pin_to_irq(irqs[0], dev->prom_name);
+		}
+	}
+
+	if ((node = prom_getchild(node))) {
+		dev->children = (struct linux_ebus_child *)
+			ebus_alloc(sizeof(struct linux_ebus_child));
+
+		child = dev->children;
+		child->next = 0;
+		child->parent = dev;
+		child->bus = dev->bus;
+		fill_ebus_child(node, &regs[0], child);
+
+		while ((node = prom_getsibling(node)) != 0) {
+			child->next = (struct linux_ebus_child *)
+				ebus_alloc(sizeof(struct linux_ebus_child));
+
+			child = child->next;
+			child->next = 0;
+			child->parent = dev;
+			child->bus = dev->bus;
+			fill_ebus_child(node, &regs[0], child);
+		}
+	}
+}
+
+void __init ebus_init(void)
+{
+	struct linux_prom_pci_registers regs[PROMREG_MAX];
+	struct linux_pbm_info *pbm;
+	struct linux_ebus_device *dev;
+	struct linux_ebus *ebus;
+	struct ebus_system_entry *sp;
+	struct pci_dev *pdev;
+	struct pcidev_cookie *cookie;
+	char lbuf[128];
+	unsigned long addr, *base;
+	unsigned short pci_command;
+	int nd, len, ebusnd;
+	int reg, nreg;
+	int num_ebus = 0;
+
+	prom_getstring(prom_root_node, "name", lbuf, sizeof(lbuf));
+	for (sp = ebus_blacklist; sp->esname != NULL; sp++) {
+		if (strcmp(lbuf, sp->esname) == 0) {
+			ebus_blackp = sp->ipt;
+			break;
+		}
+	}
+
+	pdev = pci_get_device(PCI_VENDOR_ID_SUN, PCI_DEVICE_ID_SUN_EBUS, 0);
+	if (!pdev) {
+		return;
+	}
+	cookie = pdev->sysdata;
+	ebusnd = cookie->prom_node;
+
+	ebus_chain = ebus = (struct linux_ebus *)
+			ebus_alloc(sizeof(struct linux_ebus));
+	ebus->next = 0;
+
+	while (ebusnd) {
+
+		prom_getstring(ebusnd, "name", lbuf, sizeof(lbuf));
+		ebus->prom_node = ebusnd;
+		strcpy(ebus->prom_name, lbuf);
+		ebus->self = pdev;
+		ebus->parent = pbm = cookie->pbm;
+
+		/* Enable BUS Master. */
+		pci_read_config_word(pdev, PCI_COMMAND, &pci_command);
+		pci_command |= PCI_COMMAND_MASTER;
+		pci_write_config_word(pdev, PCI_COMMAND, pci_command);
+
+		len = prom_getproperty(ebusnd, "reg", (void *)regs,
+				       sizeof(regs));
+		if (len == 0 || len == -1) {
+			prom_printf("%s: can't find reg property\n",
+				    __FUNCTION__);
+			prom_halt();
+		}
+		nreg = len / sizeof(struct linux_prom_pci_registers);
+
+		base = &ebus->self->resource[0].start;
+		for (reg = 0; reg < nreg; reg++) {
+			if (!(regs[reg].which_io & 0x03000000))
+				continue;
+
+			addr = regs[reg].phys_lo;
+			*base++ = addr;
+		}
+
+		nd = prom_getchild(ebusnd);
+		if (!nd)
+			goto next_ebus;
+
+		ebus->devices = (struct linux_ebus_device *)
+				ebus_alloc(sizeof(struct linux_ebus_device));
+
+		dev = ebus->devices;
+		dev->next = 0;
+		dev->children = 0;
+		dev->bus = ebus;
+		fill_ebus_device(nd, dev);
+
+		while ((nd = prom_getsibling(nd)) != 0) {
+			dev->next = (struct linux_ebus_device *)
+				ebus_alloc(sizeof(struct linux_ebus_device));
+
+			dev = dev->next;
+			dev->next = 0;
+			dev->children = 0;
+			dev->bus = ebus;
+			fill_ebus_device(nd, dev);
+		}
+
+	next_ebus:
+		pdev = pci_get_device(PCI_VENDOR_ID_SUN,
+				       PCI_DEVICE_ID_SUN_EBUS, pdev);
+		if (!pdev)
+			break;
+
+		cookie = pdev->sysdata;
+		ebusnd = cookie->prom_node;
+
+		ebus->next = (struct linux_ebus *)
+			ebus_alloc(sizeof(struct linux_ebus));
+		ebus = ebus->next;
+		ebus->next = 0;
+		++num_ebus;
+	}
+	if (pdev)
+		pci_dev_put(pdev);
+}