1685 lines
40 KiB
C
1685 lines
40 KiB
C
/*
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* Procedures for creating, accessing and interpreting the device tree.
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*
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* Paul Mackerras August 1996.
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* Copyright (C) 1996-2005 Paul Mackerras.
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*
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* Adapted for 64bit PowerPC by Dave Engebretsen and Peter Bergner.
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* {engebret|bergner}@us.ibm.com
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*
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* Adapted for sparc64 by David S. Miller davem@davemloft.net
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#include <linux/kernel.h>
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#include <linux/types.h>
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#include <linux/string.h>
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#include <linux/mm.h>
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#include <linux/module.h>
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#include <linux/lmb.h>
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#include <linux/of_device.h>
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#include <asm/prom.h>
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#include <asm/oplib.h>
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#include <asm/irq.h>
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#include <asm/asi.h>
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#include <asm/upa.h>
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#include <asm/smp.h>
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extern struct device_node *allnodes; /* temporary while merging */
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extern rwlock_t devtree_lock; /* temporary while merging */
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struct device_node *of_find_node_by_phandle(phandle handle)
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{
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struct device_node *np;
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for (np = allnodes; np; np = np->allnext)
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if (np->node == handle)
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break;
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return np;
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}
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EXPORT_SYMBOL(of_find_node_by_phandle);
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int of_getintprop_default(struct device_node *np, const char *name, int def)
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{
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struct property *prop;
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int len;
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prop = of_find_property(np, name, &len);
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if (!prop || len != 4)
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return def;
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return *(int *) prop->value;
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}
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EXPORT_SYMBOL(of_getintprop_default);
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DEFINE_MUTEX(of_set_property_mutex);
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EXPORT_SYMBOL(of_set_property_mutex);
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int of_set_property(struct device_node *dp, const char *name, void *val, int len)
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{
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struct property **prevp;
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void *new_val;
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int err;
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new_val = kmalloc(len, GFP_KERNEL);
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if (!new_val)
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return -ENOMEM;
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memcpy(new_val, val, len);
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err = -ENODEV;
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write_lock(&devtree_lock);
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prevp = &dp->properties;
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while (*prevp) {
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struct property *prop = *prevp;
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if (!strcasecmp(prop->name, name)) {
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void *old_val = prop->value;
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int ret;
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mutex_lock(&of_set_property_mutex);
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ret = prom_setprop(dp->node, name, val, len);
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mutex_unlock(&of_set_property_mutex);
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err = -EINVAL;
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if (ret >= 0) {
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prop->value = new_val;
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prop->length = len;
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if (OF_IS_DYNAMIC(prop))
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kfree(old_val);
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OF_MARK_DYNAMIC(prop);
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err = 0;
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}
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break;
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}
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prevp = &(*prevp)->next;
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}
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write_unlock(&devtree_lock);
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/* XXX Upate procfs if necessary... */
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return err;
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}
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EXPORT_SYMBOL(of_set_property);
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int of_find_in_proplist(const char *list, const char *match, int len)
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{
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while (len > 0) {
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int l;
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if (!strcmp(list, match))
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return 1;
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l = strlen(list) + 1;
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list += l;
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len -= l;
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}
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return 0;
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}
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EXPORT_SYMBOL(of_find_in_proplist);
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static unsigned int prom_early_allocated __initdata;
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static void * __init prom_early_alloc(unsigned long size)
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{
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unsigned long paddr = lmb_alloc(size, SMP_CACHE_BYTES);
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void *ret;
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if (!paddr) {
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prom_printf("prom_early_alloc(%lu) failed\n");
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prom_halt();
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}
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ret = __va(paddr);
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memset(ret, 0, size);
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prom_early_allocated += size;
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return ret;
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}
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#ifdef CONFIG_PCI
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/* PSYCHO interrupt mapping support. */
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#define PSYCHO_IMAP_A_SLOT0 0x0c00UL
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#define PSYCHO_IMAP_B_SLOT0 0x0c20UL
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static unsigned long psycho_pcislot_imap_offset(unsigned long ino)
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{
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unsigned int bus = (ino & 0x10) >> 4;
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unsigned int slot = (ino & 0x0c) >> 2;
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if (bus == 0)
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return PSYCHO_IMAP_A_SLOT0 + (slot * 8);
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else
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return PSYCHO_IMAP_B_SLOT0 + (slot * 8);
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}
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#define PSYCHO_OBIO_IMAP_BASE 0x1000UL
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#define PSYCHO_ONBOARD_IRQ_BASE 0x20
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#define psycho_onboard_imap_offset(__ino) \
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(PSYCHO_OBIO_IMAP_BASE + (((__ino) & 0x1f) << 3))
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#define PSYCHO_ICLR_A_SLOT0 0x1400UL
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#define PSYCHO_ICLR_SCSI 0x1800UL
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#define psycho_iclr_offset(ino) \
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((ino & 0x20) ? (PSYCHO_ICLR_SCSI + (((ino) & 0x1f) << 3)) : \
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(PSYCHO_ICLR_A_SLOT0 + (((ino) & 0x1f)<<3)))
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static unsigned int psycho_irq_build(struct device_node *dp,
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unsigned int ino,
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void *_data)
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{
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unsigned long controller_regs = (unsigned long) _data;
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unsigned long imap, iclr;
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unsigned long imap_off, iclr_off;
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int inofixup = 0;
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ino &= 0x3f;
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if (ino < PSYCHO_ONBOARD_IRQ_BASE) {
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/* PCI slot */
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imap_off = psycho_pcislot_imap_offset(ino);
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} else {
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/* Onboard device */
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imap_off = psycho_onboard_imap_offset(ino);
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}
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/* Now build the IRQ bucket. */
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imap = controller_regs + imap_off;
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iclr_off = psycho_iclr_offset(ino);
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iclr = controller_regs + iclr_off;
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if ((ino & 0x20) == 0)
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inofixup = ino & 0x03;
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return build_irq(inofixup, iclr, imap);
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}
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static void __init psycho_irq_trans_init(struct device_node *dp)
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{
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const struct linux_prom64_registers *regs;
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dp->irq_trans = prom_early_alloc(sizeof(struct of_irq_controller));
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dp->irq_trans->irq_build = psycho_irq_build;
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regs = of_get_property(dp, "reg", NULL);
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dp->irq_trans->data = (void *) regs[2].phys_addr;
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}
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#define sabre_read(__reg) \
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({ u64 __ret; \
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__asm__ __volatile__("ldxa [%1] %2, %0" \
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: "=r" (__ret) \
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: "r" (__reg), "i" (ASI_PHYS_BYPASS_EC_E) \
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: "memory"); \
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__ret; \
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})
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struct sabre_irq_data {
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unsigned long controller_regs;
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unsigned int pci_first_busno;
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};
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#define SABRE_CONFIGSPACE 0x001000000UL
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#define SABRE_WRSYNC 0x1c20UL
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#define SABRE_CONFIG_BASE(CONFIG_SPACE) \
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(CONFIG_SPACE | (1UL << 24))
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#define SABRE_CONFIG_ENCODE(BUS, DEVFN, REG) \
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(((unsigned long)(BUS) << 16) | \
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((unsigned long)(DEVFN) << 8) | \
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((unsigned long)(REG)))
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/* When a device lives behind a bridge deeper in the PCI bus topology
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* than APB, a special sequence must run to make sure all pending DMA
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* transfers at the time of IRQ delivery are visible in the coherency
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* domain by the cpu. This sequence is to perform a read on the far
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* side of the non-APB bridge, then perform a read of Sabre's DMA
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* write-sync register.
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*/
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static void sabre_wsync_handler(unsigned int ino, void *_arg1, void *_arg2)
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{
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unsigned int phys_hi = (unsigned int) (unsigned long) _arg1;
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struct sabre_irq_data *irq_data = _arg2;
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unsigned long controller_regs = irq_data->controller_regs;
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unsigned long sync_reg = controller_regs + SABRE_WRSYNC;
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unsigned long config_space = controller_regs + SABRE_CONFIGSPACE;
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unsigned int bus, devfn;
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u16 _unused;
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config_space = SABRE_CONFIG_BASE(config_space);
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bus = (phys_hi >> 16) & 0xff;
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devfn = (phys_hi >> 8) & 0xff;
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config_space |= SABRE_CONFIG_ENCODE(bus, devfn, 0x00);
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__asm__ __volatile__("membar #Sync\n\t"
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"lduha [%1] %2, %0\n\t"
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"membar #Sync"
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: "=r" (_unused)
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: "r" ((u16 *) config_space),
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"i" (ASI_PHYS_BYPASS_EC_E_L)
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: "memory");
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sabre_read(sync_reg);
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}
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#define SABRE_IMAP_A_SLOT0 0x0c00UL
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#define SABRE_IMAP_B_SLOT0 0x0c20UL
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#define SABRE_ICLR_A_SLOT0 0x1400UL
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#define SABRE_ICLR_B_SLOT0 0x1480UL
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#define SABRE_ICLR_SCSI 0x1800UL
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#define SABRE_ICLR_ETH 0x1808UL
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#define SABRE_ICLR_BPP 0x1810UL
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#define SABRE_ICLR_AU_REC 0x1818UL
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#define SABRE_ICLR_AU_PLAY 0x1820UL
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#define SABRE_ICLR_PFAIL 0x1828UL
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#define SABRE_ICLR_KMS 0x1830UL
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#define SABRE_ICLR_FLPY 0x1838UL
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#define SABRE_ICLR_SHW 0x1840UL
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#define SABRE_ICLR_KBD 0x1848UL
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#define SABRE_ICLR_MS 0x1850UL
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#define SABRE_ICLR_SER 0x1858UL
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#define SABRE_ICLR_UE 0x1870UL
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#define SABRE_ICLR_CE 0x1878UL
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#define SABRE_ICLR_PCIERR 0x1880UL
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static unsigned long sabre_pcislot_imap_offset(unsigned long ino)
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{
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unsigned int bus = (ino & 0x10) >> 4;
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unsigned int slot = (ino & 0x0c) >> 2;
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if (bus == 0)
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return SABRE_IMAP_A_SLOT0 + (slot * 8);
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else
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return SABRE_IMAP_B_SLOT0 + (slot * 8);
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}
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#define SABRE_OBIO_IMAP_BASE 0x1000UL
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#define SABRE_ONBOARD_IRQ_BASE 0x20
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#define sabre_onboard_imap_offset(__ino) \
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(SABRE_OBIO_IMAP_BASE + (((__ino) & 0x1f) << 3))
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#define sabre_iclr_offset(ino) \
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((ino & 0x20) ? (SABRE_ICLR_SCSI + (((ino) & 0x1f) << 3)) : \
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(SABRE_ICLR_A_SLOT0 + (((ino) & 0x1f)<<3)))
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static int sabre_device_needs_wsync(struct device_node *dp)
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{
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struct device_node *parent = dp->parent;
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const char *parent_model, *parent_compat;
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/* This traversal up towards the root is meant to
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* handle two cases:
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*
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* 1) non-PCI bus sitting under PCI, such as 'ebus'
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* 2) the PCI controller interrupts themselves, which
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* will use the sabre_irq_build but do not need
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* the DMA synchronization handling
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*/
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while (parent) {
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if (!strcmp(parent->type, "pci"))
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break;
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parent = parent->parent;
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}
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if (!parent)
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return 0;
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parent_model = of_get_property(parent,
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"model", NULL);
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if (parent_model &&
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(!strcmp(parent_model, "SUNW,sabre") ||
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!strcmp(parent_model, "SUNW,simba")))
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return 0;
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parent_compat = of_get_property(parent,
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"compatible", NULL);
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if (parent_compat &&
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(!strcmp(parent_compat, "pci108e,a000") ||
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!strcmp(parent_compat, "pci108e,a001")))
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return 0;
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return 1;
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}
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static unsigned int sabre_irq_build(struct device_node *dp,
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unsigned int ino,
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void *_data)
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{
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struct sabre_irq_data *irq_data = _data;
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unsigned long controller_regs = irq_data->controller_regs;
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const struct linux_prom_pci_registers *regs;
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unsigned long imap, iclr;
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unsigned long imap_off, iclr_off;
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int inofixup = 0;
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int virt_irq;
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ino &= 0x3f;
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if (ino < SABRE_ONBOARD_IRQ_BASE) {
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/* PCI slot */
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imap_off = sabre_pcislot_imap_offset(ino);
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} else {
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/* onboard device */
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imap_off = sabre_onboard_imap_offset(ino);
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}
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/* Now build the IRQ bucket. */
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imap = controller_regs + imap_off;
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iclr_off = sabre_iclr_offset(ino);
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iclr = controller_regs + iclr_off;
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if ((ino & 0x20) == 0)
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inofixup = ino & 0x03;
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virt_irq = build_irq(inofixup, iclr, imap);
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/* If the parent device is a PCI<->PCI bridge other than
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* APB, we have to install a pre-handler to ensure that
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* all pending DMA is drained before the interrupt handler
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* is run.
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*/
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regs = of_get_property(dp, "reg", NULL);
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if (regs && sabre_device_needs_wsync(dp)) {
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irq_install_pre_handler(virt_irq,
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sabre_wsync_handler,
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(void *) (long) regs->phys_hi,
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(void *) irq_data);
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}
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return virt_irq;
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}
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static void __init sabre_irq_trans_init(struct device_node *dp)
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{
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const struct linux_prom64_registers *regs;
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struct sabre_irq_data *irq_data;
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const u32 *busrange;
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dp->irq_trans = prom_early_alloc(sizeof(struct of_irq_controller));
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dp->irq_trans->irq_build = sabre_irq_build;
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irq_data = prom_early_alloc(sizeof(struct sabre_irq_data));
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regs = of_get_property(dp, "reg", NULL);
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irq_data->controller_regs = regs[0].phys_addr;
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busrange = of_get_property(dp, "bus-range", NULL);
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irq_data->pci_first_busno = busrange[0];
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dp->irq_trans->data = irq_data;
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}
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/* SCHIZO interrupt mapping support. Unlike Psycho, for this controller the
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* imap/iclr registers are per-PBM.
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*/
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#define SCHIZO_IMAP_BASE 0x1000UL
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#define SCHIZO_ICLR_BASE 0x1400UL
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static unsigned long schizo_imap_offset(unsigned long ino)
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{
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return SCHIZO_IMAP_BASE + (ino * 8UL);
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}
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static unsigned long schizo_iclr_offset(unsigned long ino)
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{
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return SCHIZO_ICLR_BASE + (ino * 8UL);
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}
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static unsigned long schizo_ino_to_iclr(unsigned long pbm_regs,
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unsigned int ino)
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{
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return pbm_regs + schizo_iclr_offset(ino);
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}
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static unsigned long schizo_ino_to_imap(unsigned long pbm_regs,
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unsigned int ino)
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{
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return pbm_regs + schizo_imap_offset(ino);
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}
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#define schizo_read(__reg) \
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({ u64 __ret; \
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__asm__ __volatile__("ldxa [%1] %2, %0" \
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: "=r" (__ret) \
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: "r" (__reg), "i" (ASI_PHYS_BYPASS_EC_E) \
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: "memory"); \
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__ret; \
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})
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#define schizo_write(__reg, __val) \
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__asm__ __volatile__("stxa %0, [%1] %2" \
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: /* no outputs */ \
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: "r" (__val), "r" (__reg), \
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"i" (ASI_PHYS_BYPASS_EC_E) \
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: "memory")
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static void tomatillo_wsync_handler(unsigned int ino, void *_arg1, void *_arg2)
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{
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unsigned long sync_reg = (unsigned long) _arg2;
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u64 mask = 1UL << (ino & IMAP_INO);
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u64 val;
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int limit;
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schizo_write(sync_reg, mask);
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limit = 100000;
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val = 0;
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while (--limit) {
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val = schizo_read(sync_reg);
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if (!(val & mask))
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break;
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}
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if (limit <= 0) {
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printk("tomatillo_wsync_handler: DMA won't sync [%lx:%lx]\n",
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val, mask);
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}
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if (_arg1) {
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static unsigned char cacheline[64]
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__attribute__ ((aligned (64)));
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|
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__asm__ __volatile__("rd %%fprs, %0\n\t"
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"or %0, %4, %1\n\t"
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"wr %1, 0x0, %%fprs\n\t"
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"stda %%f0, [%5] %6\n\t"
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"wr %0, 0x0, %%fprs\n\t"
|
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"membar #Sync"
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: "=&r" (mask), "=&r" (val)
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: "0" (mask), "1" (val),
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"i" (FPRS_FEF), "r" (&cacheline[0]),
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"i" (ASI_BLK_COMMIT_P));
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}
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}
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|
|
struct schizo_irq_data {
|
|
unsigned long pbm_regs;
|
|
unsigned long sync_reg;
|
|
u32 portid;
|
|
int chip_version;
|
|
};
|
|
|
|
static unsigned int schizo_irq_build(struct device_node *dp,
|
|
unsigned int ino,
|
|
void *_data)
|
|
{
|
|
struct schizo_irq_data *irq_data = _data;
|
|
unsigned long pbm_regs = irq_data->pbm_regs;
|
|
unsigned long imap, iclr;
|
|
int ign_fixup;
|
|
int virt_irq;
|
|
int is_tomatillo;
|
|
|
|
ino &= 0x3f;
|
|
|
|
/* Now build the IRQ bucket. */
|
|
imap = schizo_ino_to_imap(pbm_regs, ino);
|
|
iclr = schizo_ino_to_iclr(pbm_regs, ino);
|
|
|
|
/* On Schizo, no inofixup occurs. This is because each
|
|
* INO has it's own IMAP register. On Psycho and Sabre
|
|
* there is only one IMAP register for each PCI slot even
|
|
* though four different INOs can be generated by each
|
|
* PCI slot.
|
|
*
|
|
* But, for JBUS variants (essentially, Tomatillo), we have
|
|
* to fixup the lowest bit of the interrupt group number.
|
|
*/
|
|
ign_fixup = 0;
|
|
|
|
is_tomatillo = (irq_data->sync_reg != 0UL);
|
|
|
|
if (is_tomatillo) {
|
|
if (irq_data->portid & 1)
|
|
ign_fixup = (1 << 6);
|
|
}
|
|
|
|
virt_irq = build_irq(ign_fixup, iclr, imap);
|
|
|
|
if (is_tomatillo) {
|
|
irq_install_pre_handler(virt_irq,
|
|
tomatillo_wsync_handler,
|
|
((irq_data->chip_version <= 4) ?
|
|
(void *) 1 : (void *) 0),
|
|
(void *) irq_data->sync_reg);
|
|
}
|
|
|
|
return virt_irq;
|
|
}
|
|
|
|
static void __init __schizo_irq_trans_init(struct device_node *dp,
|
|
int is_tomatillo)
|
|
{
|
|
const struct linux_prom64_registers *regs;
|
|
struct schizo_irq_data *irq_data;
|
|
|
|
dp->irq_trans = prom_early_alloc(sizeof(struct of_irq_controller));
|
|
dp->irq_trans->irq_build = schizo_irq_build;
|
|
|
|
irq_data = prom_early_alloc(sizeof(struct schizo_irq_data));
|
|
|
|
regs = of_get_property(dp, "reg", NULL);
|
|
dp->irq_trans->data = irq_data;
|
|
|
|
irq_data->pbm_regs = regs[0].phys_addr;
|
|
if (is_tomatillo)
|
|
irq_data->sync_reg = regs[3].phys_addr + 0x1a18UL;
|
|
else
|
|
irq_data->sync_reg = 0UL;
|
|
irq_data->portid = of_getintprop_default(dp, "portid", 0);
|
|
irq_data->chip_version = of_getintprop_default(dp, "version#", 0);
|
|
}
|
|
|
|
static void __init schizo_irq_trans_init(struct device_node *dp)
|
|
{
|
|
__schizo_irq_trans_init(dp, 0);
|
|
}
|
|
|
|
static void __init tomatillo_irq_trans_init(struct device_node *dp)
|
|
{
|
|
__schizo_irq_trans_init(dp, 1);
|
|
}
|
|
|
|
static unsigned int pci_sun4v_irq_build(struct device_node *dp,
|
|
unsigned int devino,
|
|
void *_data)
|
|
{
|
|
u32 devhandle = (u32) (unsigned long) _data;
|
|
|
|
return sun4v_build_irq(devhandle, devino);
|
|
}
|
|
|
|
static void __init pci_sun4v_irq_trans_init(struct device_node *dp)
|
|
{
|
|
const struct linux_prom64_registers *regs;
|
|
|
|
dp->irq_trans = prom_early_alloc(sizeof(struct of_irq_controller));
|
|
dp->irq_trans->irq_build = pci_sun4v_irq_build;
|
|
|
|
regs = of_get_property(dp, "reg", NULL);
|
|
dp->irq_trans->data = (void *) (unsigned long)
|
|
((regs->phys_addr >> 32UL) & 0x0fffffff);
|
|
}
|
|
|
|
struct fire_irq_data {
|
|
unsigned long pbm_regs;
|
|
u32 portid;
|
|
};
|
|
|
|
#define FIRE_IMAP_BASE 0x001000
|
|
#define FIRE_ICLR_BASE 0x001400
|
|
|
|
static unsigned long fire_imap_offset(unsigned long ino)
|
|
{
|
|
return FIRE_IMAP_BASE + (ino * 8UL);
|
|
}
|
|
|
|
static unsigned long fire_iclr_offset(unsigned long ino)
|
|
{
|
|
return FIRE_ICLR_BASE + (ino * 8UL);
|
|
}
|
|
|
|
static unsigned long fire_ino_to_iclr(unsigned long pbm_regs,
|
|
unsigned int ino)
|
|
{
|
|
return pbm_regs + fire_iclr_offset(ino);
|
|
}
|
|
|
|
static unsigned long fire_ino_to_imap(unsigned long pbm_regs,
|
|
unsigned int ino)
|
|
{
|
|
return pbm_regs + fire_imap_offset(ino);
|
|
}
|
|
|
|
static unsigned int fire_irq_build(struct device_node *dp,
|
|
unsigned int ino,
|
|
void *_data)
|
|
{
|
|
struct fire_irq_data *irq_data = _data;
|
|
unsigned long pbm_regs = irq_data->pbm_regs;
|
|
unsigned long imap, iclr;
|
|
unsigned long int_ctrlr;
|
|
|
|
ino &= 0x3f;
|
|
|
|
/* Now build the IRQ bucket. */
|
|
imap = fire_ino_to_imap(pbm_regs, ino);
|
|
iclr = fire_ino_to_iclr(pbm_regs, ino);
|
|
|
|
/* Set the interrupt controller number. */
|
|
int_ctrlr = 1 << 6;
|
|
upa_writeq(int_ctrlr, imap);
|
|
|
|
/* The interrupt map registers do not have an INO field
|
|
* like other chips do. They return zero in the INO
|
|
* field, and the interrupt controller number is controlled
|
|
* in bits 6 to 9. So in order for build_irq() to get
|
|
* the INO right we pass it in as part of the fixup
|
|
* which will get added to the map register zero value
|
|
* read by build_irq().
|
|
*/
|
|
ino |= (irq_data->portid << 6);
|
|
ino -= int_ctrlr;
|
|
return build_irq(ino, iclr, imap);
|
|
}
|
|
|
|
static void __init fire_irq_trans_init(struct device_node *dp)
|
|
{
|
|
const struct linux_prom64_registers *regs;
|
|
struct fire_irq_data *irq_data;
|
|
|
|
dp->irq_trans = prom_early_alloc(sizeof(struct of_irq_controller));
|
|
dp->irq_trans->irq_build = fire_irq_build;
|
|
|
|
irq_data = prom_early_alloc(sizeof(struct fire_irq_data));
|
|
|
|
regs = of_get_property(dp, "reg", NULL);
|
|
dp->irq_trans->data = irq_data;
|
|
|
|
irq_data->pbm_regs = regs[0].phys_addr;
|
|
irq_data->portid = of_getintprop_default(dp, "portid", 0);
|
|
}
|
|
#endif /* CONFIG_PCI */
|
|
|
|
#ifdef CONFIG_SBUS
|
|
/* INO number to IMAP register offset for SYSIO external IRQ's.
|
|
* This should conform to both Sunfire/Wildfire server and Fusion
|
|
* desktop designs.
|
|
*/
|
|
#define SYSIO_IMAP_SLOT0 0x2c00UL
|
|
#define SYSIO_IMAP_SLOT1 0x2c08UL
|
|
#define SYSIO_IMAP_SLOT2 0x2c10UL
|
|
#define SYSIO_IMAP_SLOT3 0x2c18UL
|
|
#define SYSIO_IMAP_SCSI 0x3000UL
|
|
#define SYSIO_IMAP_ETH 0x3008UL
|
|
#define SYSIO_IMAP_BPP 0x3010UL
|
|
#define SYSIO_IMAP_AUDIO 0x3018UL
|
|
#define SYSIO_IMAP_PFAIL 0x3020UL
|
|
#define SYSIO_IMAP_KMS 0x3028UL
|
|
#define SYSIO_IMAP_FLPY 0x3030UL
|
|
#define SYSIO_IMAP_SHW 0x3038UL
|
|
#define SYSIO_IMAP_KBD 0x3040UL
|
|
#define SYSIO_IMAP_MS 0x3048UL
|
|
#define SYSIO_IMAP_SER 0x3050UL
|
|
#define SYSIO_IMAP_TIM0 0x3060UL
|
|
#define SYSIO_IMAP_TIM1 0x3068UL
|
|
#define SYSIO_IMAP_UE 0x3070UL
|
|
#define SYSIO_IMAP_CE 0x3078UL
|
|
#define SYSIO_IMAP_SBERR 0x3080UL
|
|
#define SYSIO_IMAP_PMGMT 0x3088UL
|
|
#define SYSIO_IMAP_GFX 0x3090UL
|
|
#define SYSIO_IMAP_EUPA 0x3098UL
|
|
|
|
#define bogon ((unsigned long) -1)
|
|
static unsigned long sysio_irq_offsets[] = {
|
|
/* SBUS Slot 0 --> 3, level 1 --> 7 */
|
|
SYSIO_IMAP_SLOT0, SYSIO_IMAP_SLOT0, SYSIO_IMAP_SLOT0, SYSIO_IMAP_SLOT0,
|
|
SYSIO_IMAP_SLOT0, SYSIO_IMAP_SLOT0, SYSIO_IMAP_SLOT0, SYSIO_IMAP_SLOT0,
|
|
SYSIO_IMAP_SLOT1, SYSIO_IMAP_SLOT1, SYSIO_IMAP_SLOT1, SYSIO_IMAP_SLOT1,
|
|
SYSIO_IMAP_SLOT1, SYSIO_IMAP_SLOT1, SYSIO_IMAP_SLOT1, SYSIO_IMAP_SLOT1,
|
|
SYSIO_IMAP_SLOT2, SYSIO_IMAP_SLOT2, SYSIO_IMAP_SLOT2, SYSIO_IMAP_SLOT2,
|
|
SYSIO_IMAP_SLOT2, SYSIO_IMAP_SLOT2, SYSIO_IMAP_SLOT2, SYSIO_IMAP_SLOT2,
|
|
SYSIO_IMAP_SLOT3, SYSIO_IMAP_SLOT3, SYSIO_IMAP_SLOT3, SYSIO_IMAP_SLOT3,
|
|
SYSIO_IMAP_SLOT3, SYSIO_IMAP_SLOT3, SYSIO_IMAP_SLOT3, SYSIO_IMAP_SLOT3,
|
|
|
|
/* Onboard devices (not relevant/used on SunFire). */
|
|
SYSIO_IMAP_SCSI,
|
|
SYSIO_IMAP_ETH,
|
|
SYSIO_IMAP_BPP,
|
|
bogon,
|
|
SYSIO_IMAP_AUDIO,
|
|
SYSIO_IMAP_PFAIL,
|
|
bogon,
|
|
bogon,
|
|
SYSIO_IMAP_KMS,
|
|
SYSIO_IMAP_FLPY,
|
|
SYSIO_IMAP_SHW,
|
|
SYSIO_IMAP_KBD,
|
|
SYSIO_IMAP_MS,
|
|
SYSIO_IMAP_SER,
|
|
bogon,
|
|
bogon,
|
|
SYSIO_IMAP_TIM0,
|
|
SYSIO_IMAP_TIM1,
|
|
bogon,
|
|
bogon,
|
|
SYSIO_IMAP_UE,
|
|
SYSIO_IMAP_CE,
|
|
SYSIO_IMAP_SBERR,
|
|
SYSIO_IMAP_PMGMT,
|
|
SYSIO_IMAP_GFX,
|
|
SYSIO_IMAP_EUPA,
|
|
};
|
|
|
|
#undef bogon
|
|
|
|
#define NUM_SYSIO_OFFSETS ARRAY_SIZE(sysio_irq_offsets)
|
|
|
|
/* Convert Interrupt Mapping register pointer to associated
|
|
* Interrupt Clear register pointer, SYSIO specific version.
|
|
*/
|
|
#define SYSIO_ICLR_UNUSED0 0x3400UL
|
|
#define SYSIO_ICLR_SLOT0 0x3408UL
|
|
#define SYSIO_ICLR_SLOT1 0x3448UL
|
|
#define SYSIO_ICLR_SLOT2 0x3488UL
|
|
#define SYSIO_ICLR_SLOT3 0x34c8UL
|
|
static unsigned long sysio_imap_to_iclr(unsigned long imap)
|
|
{
|
|
unsigned long diff = SYSIO_ICLR_UNUSED0 - SYSIO_IMAP_SLOT0;
|
|
return imap + diff;
|
|
}
|
|
|
|
static unsigned int sbus_of_build_irq(struct device_node *dp,
|
|
unsigned int ino,
|
|
void *_data)
|
|
{
|
|
unsigned long reg_base = (unsigned long) _data;
|
|
const struct linux_prom_registers *regs;
|
|
unsigned long imap, iclr;
|
|
int sbus_slot = 0;
|
|
int sbus_level = 0;
|
|
|
|
ino &= 0x3f;
|
|
|
|
regs = of_get_property(dp, "reg", NULL);
|
|
if (regs)
|
|
sbus_slot = regs->which_io;
|
|
|
|
if (ino < 0x20)
|
|
ino += (sbus_slot * 8);
|
|
|
|
imap = sysio_irq_offsets[ino];
|
|
if (imap == ((unsigned long)-1)) {
|
|
prom_printf("get_irq_translations: Bad SYSIO INO[%x]\n",
|
|
ino);
|
|
prom_halt();
|
|
}
|
|
imap += reg_base;
|
|
|
|
/* SYSIO inconsistency. For external SLOTS, we have to select
|
|
* the right ICLR register based upon the lower SBUS irq level
|
|
* bits.
|
|
*/
|
|
if (ino >= 0x20) {
|
|
iclr = sysio_imap_to_iclr(imap);
|
|
} else {
|
|
sbus_level = ino & 0x7;
|
|
|
|
switch(sbus_slot) {
|
|
case 0:
|
|
iclr = reg_base + SYSIO_ICLR_SLOT0;
|
|
break;
|
|
case 1:
|
|
iclr = reg_base + SYSIO_ICLR_SLOT1;
|
|
break;
|
|
case 2:
|
|
iclr = reg_base + SYSIO_ICLR_SLOT2;
|
|
break;
|
|
default:
|
|
case 3:
|
|
iclr = reg_base + SYSIO_ICLR_SLOT3;
|
|
break;
|
|
};
|
|
|
|
iclr += ((unsigned long)sbus_level - 1UL) * 8UL;
|
|
}
|
|
return build_irq(sbus_level, iclr, imap);
|
|
}
|
|
|
|
static void __init sbus_irq_trans_init(struct device_node *dp)
|
|
{
|
|
const struct linux_prom64_registers *regs;
|
|
|
|
dp->irq_trans = prom_early_alloc(sizeof(struct of_irq_controller));
|
|
dp->irq_trans->irq_build = sbus_of_build_irq;
|
|
|
|
regs = of_get_property(dp, "reg", NULL);
|
|
dp->irq_trans->data = (void *) (unsigned long) regs->phys_addr;
|
|
}
|
|
#endif /* CONFIG_SBUS */
|
|
|
|
|
|
static unsigned int central_build_irq(struct device_node *dp,
|
|
unsigned int ino,
|
|
void *_data)
|
|
{
|
|
struct device_node *central_dp = _data;
|
|
struct of_device *central_op = of_find_device_by_node(central_dp);
|
|
struct resource *res;
|
|
unsigned long imap, iclr;
|
|
u32 tmp;
|
|
|
|
if (!strcmp(dp->name, "eeprom")) {
|
|
res = ¢ral_op->resource[5];
|
|
} else if (!strcmp(dp->name, "zs")) {
|
|
res = ¢ral_op->resource[4];
|
|
} else if (!strcmp(dp->name, "clock-board")) {
|
|
res = ¢ral_op->resource[3];
|
|
} else {
|
|
return ino;
|
|
}
|
|
|
|
imap = res->start + 0x00UL;
|
|
iclr = res->start + 0x10UL;
|
|
|
|
/* Set the INO state to idle, and disable. */
|
|
upa_writel(0, iclr);
|
|
upa_readl(iclr);
|
|
|
|
tmp = upa_readl(imap);
|
|
tmp &= ~0x80000000;
|
|
upa_writel(tmp, imap);
|
|
|
|
return build_irq(0, iclr, imap);
|
|
}
|
|
|
|
static void __init central_irq_trans_init(struct device_node *dp)
|
|
{
|
|
dp->irq_trans = prom_early_alloc(sizeof(struct of_irq_controller));
|
|
dp->irq_trans->irq_build = central_build_irq;
|
|
|
|
dp->irq_trans->data = dp;
|
|
}
|
|
|
|
struct irq_trans {
|
|
const char *name;
|
|
void (*init)(struct device_node *);
|
|
};
|
|
|
|
#ifdef CONFIG_PCI
|
|
static struct irq_trans __initdata pci_irq_trans_table[] = {
|
|
{ "SUNW,sabre", sabre_irq_trans_init },
|
|
{ "pci108e,a000", sabre_irq_trans_init },
|
|
{ "pci108e,a001", sabre_irq_trans_init },
|
|
{ "SUNW,psycho", psycho_irq_trans_init },
|
|
{ "pci108e,8000", psycho_irq_trans_init },
|
|
{ "SUNW,schizo", schizo_irq_trans_init },
|
|
{ "pci108e,8001", schizo_irq_trans_init },
|
|
{ "SUNW,schizo+", schizo_irq_trans_init },
|
|
{ "pci108e,8002", schizo_irq_trans_init },
|
|
{ "SUNW,tomatillo", tomatillo_irq_trans_init },
|
|
{ "pci108e,a801", tomatillo_irq_trans_init },
|
|
{ "SUNW,sun4v-pci", pci_sun4v_irq_trans_init },
|
|
{ "pciex108e,80f0", fire_irq_trans_init },
|
|
};
|
|
#endif
|
|
|
|
static unsigned int sun4v_vdev_irq_build(struct device_node *dp,
|
|
unsigned int devino,
|
|
void *_data)
|
|
{
|
|
u32 devhandle = (u32) (unsigned long) _data;
|
|
|
|
return sun4v_build_irq(devhandle, devino);
|
|
}
|
|
|
|
static void __init sun4v_vdev_irq_trans_init(struct device_node *dp)
|
|
{
|
|
const struct linux_prom64_registers *regs;
|
|
|
|
dp->irq_trans = prom_early_alloc(sizeof(struct of_irq_controller));
|
|
dp->irq_trans->irq_build = sun4v_vdev_irq_build;
|
|
|
|
regs = of_get_property(dp, "reg", NULL);
|
|
dp->irq_trans->data = (void *) (unsigned long)
|
|
((regs->phys_addr >> 32UL) & 0x0fffffff);
|
|
}
|
|
|
|
static void __init irq_trans_init(struct device_node *dp)
|
|
{
|
|
#ifdef CONFIG_PCI
|
|
const char *model;
|
|
int i;
|
|
#endif
|
|
|
|
#ifdef CONFIG_PCI
|
|
model = of_get_property(dp, "model", NULL);
|
|
if (!model)
|
|
model = of_get_property(dp, "compatible", NULL);
|
|
if (model) {
|
|
for (i = 0; i < ARRAY_SIZE(pci_irq_trans_table); i++) {
|
|
struct irq_trans *t = &pci_irq_trans_table[i];
|
|
|
|
if (!strcmp(model, t->name)) {
|
|
t->init(dp);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
#ifdef CONFIG_SBUS
|
|
if (!strcmp(dp->name, "sbus") ||
|
|
!strcmp(dp->name, "sbi")) {
|
|
sbus_irq_trans_init(dp);
|
|
return;
|
|
}
|
|
#endif
|
|
if (!strcmp(dp->name, "fhc") &&
|
|
!strcmp(dp->parent->name, "central")) {
|
|
central_irq_trans_init(dp);
|
|
return;
|
|
}
|
|
if (!strcmp(dp->name, "virtual-devices") ||
|
|
!strcmp(dp->name, "niu")) {
|
|
sun4v_vdev_irq_trans_init(dp);
|
|
return;
|
|
}
|
|
}
|
|
|
|
static int is_root_node(const struct device_node *dp)
|
|
{
|
|
if (!dp)
|
|
return 0;
|
|
|
|
return (dp->parent == NULL);
|
|
}
|
|
|
|
/* The following routines deal with the black magic of fully naming a
|
|
* node.
|
|
*
|
|
* Certain well known named nodes are just the simple name string.
|
|
*
|
|
* Actual devices have an address specifier appended to the base name
|
|
* string, like this "foo@addr". The "addr" can be in any number of
|
|
* formats, and the platform plus the type of the node determine the
|
|
* format and how it is constructed.
|
|
*
|
|
* For children of the ROOT node, the naming convention is fixed and
|
|
* determined by whether this is a sun4u or sun4v system.
|
|
*
|
|
* For children of other nodes, it is bus type specific. So
|
|
* we walk up the tree until we discover a "device_type" property
|
|
* we recognize and we go from there.
|
|
*
|
|
* As an example, the boot device on my workstation has a full path:
|
|
*
|
|
* /pci@1e,600000/ide@d/disk@0,0:c
|
|
*/
|
|
static void __init sun4v_path_component(struct device_node *dp, char *tmp_buf)
|
|
{
|
|
struct linux_prom64_registers *regs;
|
|
struct property *rprop;
|
|
u32 high_bits, low_bits, type;
|
|
|
|
rprop = of_find_property(dp, "reg", NULL);
|
|
if (!rprop)
|
|
return;
|
|
|
|
regs = rprop->value;
|
|
if (!is_root_node(dp->parent)) {
|
|
sprintf(tmp_buf, "%s@%x,%x",
|
|
dp->name,
|
|
(unsigned int) (regs->phys_addr >> 32UL),
|
|
(unsigned int) (regs->phys_addr & 0xffffffffUL));
|
|
return;
|
|
}
|
|
|
|
type = regs->phys_addr >> 60UL;
|
|
high_bits = (regs->phys_addr >> 32UL) & 0x0fffffffUL;
|
|
low_bits = (regs->phys_addr & 0xffffffffUL);
|
|
|
|
if (type == 0 || type == 8) {
|
|
const char *prefix = (type == 0) ? "m" : "i";
|
|
|
|
if (low_bits)
|
|
sprintf(tmp_buf, "%s@%s%x,%x",
|
|
dp->name, prefix,
|
|
high_bits, low_bits);
|
|
else
|
|
sprintf(tmp_buf, "%s@%s%x",
|
|
dp->name,
|
|
prefix,
|
|
high_bits);
|
|
} else if (type == 12) {
|
|
sprintf(tmp_buf, "%s@%x",
|
|
dp->name, high_bits);
|
|
}
|
|
}
|
|
|
|
static void __init sun4u_path_component(struct device_node *dp, char *tmp_buf)
|
|
{
|
|
struct linux_prom64_registers *regs;
|
|
struct property *prop;
|
|
|
|
prop = of_find_property(dp, "reg", NULL);
|
|
if (!prop)
|
|
return;
|
|
|
|
regs = prop->value;
|
|
if (!is_root_node(dp->parent)) {
|
|
sprintf(tmp_buf, "%s@%x,%x",
|
|
dp->name,
|
|
(unsigned int) (regs->phys_addr >> 32UL),
|
|
(unsigned int) (regs->phys_addr & 0xffffffffUL));
|
|
return;
|
|
}
|
|
|
|
prop = of_find_property(dp, "upa-portid", NULL);
|
|
if (!prop)
|
|
prop = of_find_property(dp, "portid", NULL);
|
|
if (prop) {
|
|
unsigned long mask = 0xffffffffUL;
|
|
|
|
if (tlb_type >= cheetah)
|
|
mask = 0x7fffff;
|
|
|
|
sprintf(tmp_buf, "%s@%x,%x",
|
|
dp->name,
|
|
*(u32 *)prop->value,
|
|
(unsigned int) (regs->phys_addr & mask));
|
|
}
|
|
}
|
|
|
|
/* "name@slot,offset" */
|
|
static void __init sbus_path_component(struct device_node *dp, char *tmp_buf)
|
|
{
|
|
struct linux_prom_registers *regs;
|
|
struct property *prop;
|
|
|
|
prop = of_find_property(dp, "reg", NULL);
|
|
if (!prop)
|
|
return;
|
|
|
|
regs = prop->value;
|
|
sprintf(tmp_buf, "%s@%x,%x",
|
|
dp->name,
|
|
regs->which_io,
|
|
regs->phys_addr);
|
|
}
|
|
|
|
/* "name@devnum[,func]" */
|
|
static void __init pci_path_component(struct device_node *dp, char *tmp_buf)
|
|
{
|
|
struct linux_prom_pci_registers *regs;
|
|
struct property *prop;
|
|
unsigned int devfn;
|
|
|
|
prop = of_find_property(dp, "reg", NULL);
|
|
if (!prop)
|
|
return;
|
|
|
|
regs = prop->value;
|
|
devfn = (regs->phys_hi >> 8) & 0xff;
|
|
if (devfn & 0x07) {
|
|
sprintf(tmp_buf, "%s@%x,%x",
|
|
dp->name,
|
|
devfn >> 3,
|
|
devfn & 0x07);
|
|
} else {
|
|
sprintf(tmp_buf, "%s@%x",
|
|
dp->name,
|
|
devfn >> 3);
|
|
}
|
|
}
|
|
|
|
/* "name@UPA_PORTID,offset" */
|
|
static void __init upa_path_component(struct device_node *dp, char *tmp_buf)
|
|
{
|
|
struct linux_prom64_registers *regs;
|
|
struct property *prop;
|
|
|
|
prop = of_find_property(dp, "reg", NULL);
|
|
if (!prop)
|
|
return;
|
|
|
|
regs = prop->value;
|
|
|
|
prop = of_find_property(dp, "upa-portid", NULL);
|
|
if (!prop)
|
|
return;
|
|
|
|
sprintf(tmp_buf, "%s@%x,%x",
|
|
dp->name,
|
|
*(u32 *) prop->value,
|
|
(unsigned int) (regs->phys_addr & 0xffffffffUL));
|
|
}
|
|
|
|
/* "name@reg" */
|
|
static void __init vdev_path_component(struct device_node *dp, char *tmp_buf)
|
|
{
|
|
struct property *prop;
|
|
u32 *regs;
|
|
|
|
prop = of_find_property(dp, "reg", NULL);
|
|
if (!prop)
|
|
return;
|
|
|
|
regs = prop->value;
|
|
|
|
sprintf(tmp_buf, "%s@%x", dp->name, *regs);
|
|
}
|
|
|
|
/* "name@addrhi,addrlo" */
|
|
static void __init ebus_path_component(struct device_node *dp, char *tmp_buf)
|
|
{
|
|
struct linux_prom64_registers *regs;
|
|
struct property *prop;
|
|
|
|
prop = of_find_property(dp, "reg", NULL);
|
|
if (!prop)
|
|
return;
|
|
|
|
regs = prop->value;
|
|
|
|
sprintf(tmp_buf, "%s@%x,%x",
|
|
dp->name,
|
|
(unsigned int) (regs->phys_addr >> 32UL),
|
|
(unsigned int) (regs->phys_addr & 0xffffffffUL));
|
|
}
|
|
|
|
/* "name@bus,addr" */
|
|
static void __init i2c_path_component(struct device_node *dp, char *tmp_buf)
|
|
{
|
|
struct property *prop;
|
|
u32 *regs;
|
|
|
|
prop = of_find_property(dp, "reg", NULL);
|
|
if (!prop)
|
|
return;
|
|
|
|
regs = prop->value;
|
|
|
|
/* This actually isn't right... should look at the #address-cells
|
|
* property of the i2c bus node etc. etc.
|
|
*/
|
|
sprintf(tmp_buf, "%s@%x,%x",
|
|
dp->name, regs[0], regs[1]);
|
|
}
|
|
|
|
/* "name@reg0[,reg1]" */
|
|
static void __init usb_path_component(struct device_node *dp, char *tmp_buf)
|
|
{
|
|
struct property *prop;
|
|
u32 *regs;
|
|
|
|
prop = of_find_property(dp, "reg", NULL);
|
|
if (!prop)
|
|
return;
|
|
|
|
regs = prop->value;
|
|
|
|
if (prop->length == sizeof(u32) || regs[1] == 1) {
|
|
sprintf(tmp_buf, "%s@%x",
|
|
dp->name, regs[0]);
|
|
} else {
|
|
sprintf(tmp_buf, "%s@%x,%x",
|
|
dp->name, regs[0], regs[1]);
|
|
}
|
|
}
|
|
|
|
/* "name@reg0reg1[,reg2reg3]" */
|
|
static void __init ieee1394_path_component(struct device_node *dp, char *tmp_buf)
|
|
{
|
|
struct property *prop;
|
|
u32 *regs;
|
|
|
|
prop = of_find_property(dp, "reg", NULL);
|
|
if (!prop)
|
|
return;
|
|
|
|
regs = prop->value;
|
|
|
|
if (regs[2] || regs[3]) {
|
|
sprintf(tmp_buf, "%s@%08x%08x,%04x%08x",
|
|
dp->name, regs[0], regs[1], regs[2], regs[3]);
|
|
} else {
|
|
sprintf(tmp_buf, "%s@%08x%08x",
|
|
dp->name, regs[0], regs[1]);
|
|
}
|
|
}
|
|
|
|
static void __init __build_path_component(struct device_node *dp, char *tmp_buf)
|
|
{
|
|
struct device_node *parent = dp->parent;
|
|
|
|
if (parent != NULL) {
|
|
if (!strcmp(parent->type, "pci") ||
|
|
!strcmp(parent->type, "pciex")) {
|
|
pci_path_component(dp, tmp_buf);
|
|
return;
|
|
}
|
|
if (!strcmp(parent->type, "sbus")) {
|
|
sbus_path_component(dp, tmp_buf);
|
|
return;
|
|
}
|
|
if (!strcmp(parent->type, "upa")) {
|
|
upa_path_component(dp, tmp_buf);
|
|
return;
|
|
}
|
|
if (!strcmp(parent->type, "ebus")) {
|
|
ebus_path_component(dp, tmp_buf);
|
|
return;
|
|
}
|
|
if (!strcmp(parent->name, "usb") ||
|
|
!strcmp(parent->name, "hub")) {
|
|
usb_path_component(dp, tmp_buf);
|
|
return;
|
|
}
|
|
if (!strcmp(parent->type, "i2c")) {
|
|
i2c_path_component(dp, tmp_buf);
|
|
return;
|
|
}
|
|
if (!strcmp(parent->type, "firewire")) {
|
|
ieee1394_path_component(dp, tmp_buf);
|
|
return;
|
|
}
|
|
if (!strcmp(parent->type, "virtual-devices")) {
|
|
vdev_path_component(dp, tmp_buf);
|
|
return;
|
|
}
|
|
/* "isa" is handled with platform naming */
|
|
}
|
|
|
|
/* Use platform naming convention. */
|
|
if (tlb_type == hypervisor) {
|
|
sun4v_path_component(dp, tmp_buf);
|
|
return;
|
|
} else {
|
|
sun4u_path_component(dp, tmp_buf);
|
|
}
|
|
}
|
|
|
|
static char * __init build_path_component(struct device_node *dp)
|
|
{
|
|
char tmp_buf[64], *n;
|
|
|
|
tmp_buf[0] = '\0';
|
|
__build_path_component(dp, tmp_buf);
|
|
if (tmp_buf[0] == '\0')
|
|
strcpy(tmp_buf, dp->name);
|
|
|
|
n = prom_early_alloc(strlen(tmp_buf) + 1);
|
|
strcpy(n, tmp_buf);
|
|
|
|
return n;
|
|
}
|
|
|
|
static char * __init build_full_name(struct device_node *dp)
|
|
{
|
|
int len, ourlen, plen;
|
|
char *n;
|
|
|
|
plen = strlen(dp->parent->full_name);
|
|
ourlen = strlen(dp->path_component_name);
|
|
len = ourlen + plen + 2;
|
|
|
|
n = prom_early_alloc(len);
|
|
strcpy(n, dp->parent->full_name);
|
|
if (!is_root_node(dp->parent)) {
|
|
strcpy(n + plen, "/");
|
|
plen++;
|
|
}
|
|
strcpy(n + plen, dp->path_component_name);
|
|
|
|
return n;
|
|
}
|
|
|
|
static unsigned int unique_id;
|
|
|
|
static struct property * __init build_one_prop(phandle node, char *prev, char *special_name, void *special_val, int special_len)
|
|
{
|
|
static struct property *tmp = NULL;
|
|
struct property *p;
|
|
|
|
if (tmp) {
|
|
p = tmp;
|
|
memset(p, 0, sizeof(*p) + 32);
|
|
tmp = NULL;
|
|
} else {
|
|
p = prom_early_alloc(sizeof(struct property) + 32);
|
|
p->unique_id = unique_id++;
|
|
}
|
|
|
|
p->name = (char *) (p + 1);
|
|
if (special_name) {
|
|
strcpy(p->name, special_name);
|
|
p->length = special_len;
|
|
p->value = prom_early_alloc(special_len);
|
|
memcpy(p->value, special_val, special_len);
|
|
} else {
|
|
if (prev == NULL) {
|
|
prom_firstprop(node, p->name);
|
|
} else {
|
|
prom_nextprop(node, prev, p->name);
|
|
}
|
|
if (strlen(p->name) == 0) {
|
|
tmp = p;
|
|
return NULL;
|
|
}
|
|
p->length = prom_getproplen(node, p->name);
|
|
if (p->length <= 0) {
|
|
p->length = 0;
|
|
} else {
|
|
p->value = prom_early_alloc(p->length + 1);
|
|
prom_getproperty(node, p->name, p->value, p->length);
|
|
((unsigned char *)p->value)[p->length] = '\0';
|
|
}
|
|
}
|
|
return p;
|
|
}
|
|
|
|
static struct property * __init build_prop_list(phandle node)
|
|
{
|
|
struct property *head, *tail;
|
|
|
|
head = tail = build_one_prop(node, NULL,
|
|
".node", &node, sizeof(node));
|
|
|
|
tail->next = build_one_prop(node, NULL, NULL, NULL, 0);
|
|
tail = tail->next;
|
|
while(tail) {
|
|
tail->next = build_one_prop(node, tail->name,
|
|
NULL, NULL, 0);
|
|
tail = tail->next;
|
|
}
|
|
|
|
return head;
|
|
}
|
|
|
|
static char * __init get_one_property(phandle node, const char *name)
|
|
{
|
|
char *buf = "<NULL>";
|
|
int len;
|
|
|
|
len = prom_getproplen(node, name);
|
|
if (len > 0) {
|
|
buf = prom_early_alloc(len);
|
|
prom_getproperty(node, name, buf, len);
|
|
}
|
|
|
|
return buf;
|
|
}
|
|
|
|
static struct device_node * __init create_node(phandle node, struct device_node *parent)
|
|
{
|
|
struct device_node *dp;
|
|
|
|
if (!node)
|
|
return NULL;
|
|
|
|
dp = prom_early_alloc(sizeof(*dp));
|
|
dp->unique_id = unique_id++;
|
|
dp->parent = parent;
|
|
|
|
kref_init(&dp->kref);
|
|
|
|
dp->name = get_one_property(node, "name");
|
|
dp->type = get_one_property(node, "device_type");
|
|
dp->node = node;
|
|
|
|
dp->properties = build_prop_list(node);
|
|
|
|
irq_trans_init(dp);
|
|
|
|
return dp;
|
|
}
|
|
|
|
static struct device_node * __init build_tree(struct device_node *parent, phandle node, struct device_node ***nextp)
|
|
{
|
|
struct device_node *ret = NULL, *prev_sibling = NULL;
|
|
struct device_node *dp;
|
|
|
|
while (1) {
|
|
dp = create_node(node, parent);
|
|
if (!dp)
|
|
break;
|
|
|
|
if (prev_sibling)
|
|
prev_sibling->sibling = dp;
|
|
|
|
if (!ret)
|
|
ret = dp;
|
|
prev_sibling = dp;
|
|
|
|
*(*nextp) = dp;
|
|
*nextp = &dp->allnext;
|
|
|
|
dp->path_component_name = build_path_component(dp);
|
|
dp->full_name = build_full_name(dp);
|
|
|
|
dp->child = build_tree(dp, prom_getchild(node), nextp);
|
|
|
|
node = prom_getsibling(node);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static const char *get_mid_prop(void)
|
|
{
|
|
return (tlb_type == spitfire ? "upa-portid" : "portid");
|
|
}
|
|
|
|
struct device_node *of_find_node_by_cpuid(int cpuid)
|
|
{
|
|
struct device_node *dp;
|
|
const char *mid_prop = get_mid_prop();
|
|
|
|
for_each_node_by_type(dp, "cpu") {
|
|
int id = of_getintprop_default(dp, mid_prop, -1);
|
|
const char *this_mid_prop = mid_prop;
|
|
|
|
if (id < 0) {
|
|
this_mid_prop = "cpuid";
|
|
id = of_getintprop_default(dp, this_mid_prop, -1);
|
|
}
|
|
|
|
if (id < 0) {
|
|
prom_printf("OF: Serious problem, cpu lacks "
|
|
"%s property", this_mid_prop);
|
|
prom_halt();
|
|
}
|
|
if (cpuid == id)
|
|
return dp;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
static void __init of_fill_in_cpu_data(void)
|
|
{
|
|
struct device_node *dp;
|
|
const char *mid_prop = get_mid_prop();
|
|
|
|
ncpus_probed = 0;
|
|
for_each_node_by_type(dp, "cpu") {
|
|
int cpuid = of_getintprop_default(dp, mid_prop, -1);
|
|
const char *this_mid_prop = mid_prop;
|
|
struct device_node *portid_parent;
|
|
int portid = -1;
|
|
|
|
portid_parent = NULL;
|
|
if (cpuid < 0) {
|
|
this_mid_prop = "cpuid";
|
|
cpuid = of_getintprop_default(dp, this_mid_prop, -1);
|
|
if (cpuid >= 0) {
|
|
int limit = 2;
|
|
|
|
portid_parent = dp;
|
|
while (limit--) {
|
|
portid_parent = portid_parent->parent;
|
|
if (!portid_parent)
|
|
break;
|
|
portid = of_getintprop_default(portid_parent,
|
|
"portid", -1);
|
|
if (portid >= 0)
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (cpuid < 0) {
|
|
prom_printf("OF: Serious problem, cpu lacks "
|
|
"%s property", this_mid_prop);
|
|
prom_halt();
|
|
}
|
|
|
|
ncpus_probed++;
|
|
|
|
#ifdef CONFIG_SMP
|
|
if (cpuid >= NR_CPUS) {
|
|
printk(KERN_WARNING "Ignoring CPU %d which is "
|
|
">= NR_CPUS (%d)\n",
|
|
cpuid, NR_CPUS);
|
|
continue;
|
|
}
|
|
#else
|
|
/* On uniprocessor we only want the values for the
|
|
* real physical cpu the kernel booted onto, however
|
|
* cpu_data() only has one entry at index 0.
|
|
*/
|
|
if (cpuid != real_hard_smp_processor_id())
|
|
continue;
|
|
cpuid = 0;
|
|
#endif
|
|
|
|
cpu_data(cpuid).clock_tick =
|
|
of_getintprop_default(dp, "clock-frequency", 0);
|
|
|
|
if (portid_parent) {
|
|
cpu_data(cpuid).dcache_size =
|
|
of_getintprop_default(dp, "l1-dcache-size",
|
|
16 * 1024);
|
|
cpu_data(cpuid).dcache_line_size =
|
|
of_getintprop_default(dp, "l1-dcache-line-size",
|
|
32);
|
|
cpu_data(cpuid).icache_size =
|
|
of_getintprop_default(dp, "l1-icache-size",
|
|
8 * 1024);
|
|
cpu_data(cpuid).icache_line_size =
|
|
of_getintprop_default(dp, "l1-icache-line-size",
|
|
32);
|
|
cpu_data(cpuid).ecache_size =
|
|
of_getintprop_default(dp, "l2-cache-size", 0);
|
|
cpu_data(cpuid).ecache_line_size =
|
|
of_getintprop_default(dp, "l2-cache-line-size", 0);
|
|
if (!cpu_data(cpuid).ecache_size ||
|
|
!cpu_data(cpuid).ecache_line_size) {
|
|
cpu_data(cpuid).ecache_size =
|
|
of_getintprop_default(portid_parent,
|
|
"l2-cache-size",
|
|
(4 * 1024 * 1024));
|
|
cpu_data(cpuid).ecache_line_size =
|
|
of_getintprop_default(portid_parent,
|
|
"l2-cache-line-size", 64);
|
|
}
|
|
|
|
cpu_data(cpuid).core_id = portid + 1;
|
|
cpu_data(cpuid).proc_id = portid;
|
|
#ifdef CONFIG_SMP
|
|
sparc64_multi_core = 1;
|
|
#endif
|
|
} else {
|
|
cpu_data(cpuid).dcache_size =
|
|
of_getintprop_default(dp, "dcache-size", 16 * 1024);
|
|
cpu_data(cpuid).dcache_line_size =
|
|
of_getintprop_default(dp, "dcache-line-size", 32);
|
|
|
|
cpu_data(cpuid).icache_size =
|
|
of_getintprop_default(dp, "icache-size", 16 * 1024);
|
|
cpu_data(cpuid).icache_line_size =
|
|
of_getintprop_default(dp, "icache-line-size", 32);
|
|
|
|
cpu_data(cpuid).ecache_size =
|
|
of_getintprop_default(dp, "ecache-size",
|
|
(4 * 1024 * 1024));
|
|
cpu_data(cpuid).ecache_line_size =
|
|
of_getintprop_default(dp, "ecache-line-size", 64);
|
|
|
|
cpu_data(cpuid).core_id = 0;
|
|
cpu_data(cpuid).proc_id = -1;
|
|
}
|
|
|
|
#ifdef CONFIG_SMP
|
|
cpu_set(cpuid, cpu_present_map);
|
|
cpu_set(cpuid, cpu_possible_map);
|
|
#endif
|
|
}
|
|
|
|
smp_fill_in_sib_core_maps();
|
|
}
|
|
|
|
struct device_node *of_console_device;
|
|
EXPORT_SYMBOL(of_console_device);
|
|
|
|
char *of_console_path;
|
|
EXPORT_SYMBOL(of_console_path);
|
|
|
|
char *of_console_options;
|
|
EXPORT_SYMBOL(of_console_options);
|
|
|
|
static void __init of_console_init(void)
|
|
{
|
|
char *msg = "OF stdout device is: %s\n";
|
|
struct device_node *dp;
|
|
const char *type;
|
|
phandle node;
|
|
|
|
of_console_path = prom_early_alloc(256);
|
|
if (prom_ihandle2path(prom_stdout, of_console_path, 256) < 0) {
|
|
prom_printf("Cannot obtain path of stdout.\n");
|
|
prom_halt();
|
|
}
|
|
of_console_options = strrchr(of_console_path, ':');
|
|
if (of_console_options) {
|
|
of_console_options++;
|
|
if (*of_console_options == '\0')
|
|
of_console_options = NULL;
|
|
}
|
|
|
|
node = prom_inst2pkg(prom_stdout);
|
|
if (!node) {
|
|
prom_printf("Cannot resolve stdout node from "
|
|
"instance %08x.\n", prom_stdout);
|
|
prom_halt();
|
|
}
|
|
|
|
dp = of_find_node_by_phandle(node);
|
|
type = of_get_property(dp, "device_type", NULL);
|
|
if (!type) {
|
|
prom_printf("Console stdout lacks device_type property.\n");
|
|
prom_halt();
|
|
}
|
|
|
|
if (strcmp(type, "display") && strcmp(type, "serial")) {
|
|
prom_printf("Console device_type is neither display "
|
|
"nor serial.\n");
|
|
prom_halt();
|
|
}
|
|
|
|
of_console_device = dp;
|
|
|
|
printk(msg, of_console_path);
|
|
}
|
|
|
|
void __init prom_build_devicetree(void)
|
|
{
|
|
struct device_node **nextp;
|
|
|
|
allnodes = create_node(prom_root_node, NULL);
|
|
allnodes->path_component_name = "";
|
|
allnodes->full_name = "/";
|
|
|
|
nextp = &allnodes->allnext;
|
|
allnodes->child = build_tree(allnodes,
|
|
prom_getchild(allnodes->node),
|
|
&nextp);
|
|
of_console_init();
|
|
|
|
printk("PROM: Built device tree with %u bytes of memory.\n",
|
|
prom_early_allocated);
|
|
|
|
if (tlb_type != hypervisor)
|
|
of_fill_in_cpu_data();
|
|
}
|