aboutsummaryrefslogtreecommitdiff
path: root/arch/sparc64/kernel/devices.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/sparc64/kernel/devices.c')
-rw-r--r--arch/sparc64/kernel/devices.c297
1 files changed, 0 insertions, 297 deletions
diff --git a/arch/sparc64/kernel/devices.c b/arch/sparc64/kernel/devices.c
deleted file mode 100644
index 389301c95cb..00000000000
--- a/arch/sparc64/kernel/devices.c
+++ /dev/null
@@ -1,297 +0,0 @@
-/* devices.c: Initial scan of the prom device tree for important
- * Sparc device nodes which we need to find.
- *
- * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
- */
-
-#include <linux/config.h>
-#include <linux/kernel.h>
-#include <linux/threads.h>
-#include <linux/init.h>
-#include <linux/ioport.h>
-#include <linux/string.h>
-#include <linux/spinlock.h>
-#include <linux/errno.h>
-#include <linux/bootmem.h>
-
-#include <asm/page.h>
-#include <asm/oplib.h>
-#include <asm/system.h>
-#include <asm/smp.h>
-#include <asm/spitfire.h>
-#include <asm/timer.h>
-#include <asm/cpudata.h>
-#include <asm/vdev.h>
-#include <asm/irq.h>
-
-/* Used to synchronize acceses to NatSemi SUPER I/O chip configure
- * operations in asm/ns87303.h
- */
-DEFINE_SPINLOCK(ns87303_lock);
-
-extern void cpu_probe(void);
-extern void central_probe(void);
-
-u32 sun4v_vdev_devhandle;
-struct device_node *sun4v_vdev_root;
-
-struct vdev_intmap {
- unsigned int phys;
- unsigned int irq;
- unsigned int cnode;
- unsigned int cinterrupt;
-};
-
-struct vdev_intmask {
- unsigned int phys;
- unsigned int interrupt;
- unsigned int __unused;
-};
-
-static struct vdev_intmap *vdev_intmap;
-static int vdev_num_intmap;
-static struct vdev_intmask *vdev_intmask;
-
-static void __init sun4v_virtual_device_probe(void)
-{
- struct linux_prom64_registers *regs;
- struct property *prop;
- struct device_node *dp;
- int sz;
-
- if (tlb_type != hypervisor)
- return;
-
- dp = of_find_node_by_name(NULL, "virtual-devices");
- if (!dp) {
- prom_printf("SUN4V: Fatal error, no virtual-devices node.\n");
- prom_halt();
- }
-
- sun4v_vdev_root = dp;
-
- prop = of_find_property(dp, "reg", NULL);
- regs = prop->value;
- sun4v_vdev_devhandle = (regs[0].phys_addr >> 32UL) & 0x0fffffff;
-
- prop = of_find_property(dp, "interrupt-map", &sz);
- vdev_intmap = prop->value;
- vdev_num_intmap = sz / sizeof(struct vdev_intmap);
-
- prop = of_find_property(dp, "interrupt-map-mask", NULL);
- vdev_intmask = prop->value;
-
- printk("%s: Virtual Device Bus devhandle[%x]\n",
- dp->full_name, sun4v_vdev_devhandle);
-}
-
-unsigned int sun4v_vdev_device_interrupt(struct device_node *dev_node)
-{
- struct property *prop;
- unsigned int irq, reg;
- int i;
-
- prop = of_find_property(dev_node, "interrupts", NULL);
- if (!prop) {
- printk("VDEV: Cannot get \"interrupts\" "
- "property for OBP node %s\n",
- dev_node->full_name);
- return 0;
- }
- irq = *(unsigned int *) prop->value;
-
- prop = of_find_property(dev_node, "reg", NULL);
- if (!prop) {
- printk("VDEV: Cannot get \"reg\" "
- "property for OBP node %s\n",
- dev_node->full_name);
- return 0;
- }
- reg = *(unsigned int *) prop->value;
-
- for (i = 0; i < vdev_num_intmap; i++) {
- if (vdev_intmap[i].phys == (reg & vdev_intmask->phys) &&
- vdev_intmap[i].irq == (irq & vdev_intmask->interrupt)) {
- irq = vdev_intmap[i].cinterrupt;
- break;
- }
- }
-
- if (i == vdev_num_intmap) {
- printk("VDEV: No matching interrupt map entry "
- "for OBP node %s\n", dev_node->full_name);
- return 0;
- }
-
- return sun4v_build_irq(sun4v_vdev_devhandle, irq);
-}
-
-static const char *cpu_mid_prop(void)
-{
- if (tlb_type == spitfire)
- return "upa-portid";
- return "portid";
-}
-
-static int get_cpu_mid(struct device_node *dp)
-{
- struct property *prop;
-
- if (tlb_type == hypervisor) {
- struct linux_prom64_registers *reg;
- int len;
-
- prop = of_find_property(dp, "cpuid", &len);
- if (prop && len == 4)
- return *(int *) prop->value;
-
- prop = of_find_property(dp, "reg", NULL);
- reg = prop->value;
- return (reg[0].phys_addr >> 32) & 0x0fffffffUL;
- } else {
- const char *prop_name = cpu_mid_prop();
-
- prop = of_find_property(dp, prop_name, NULL);
- if (prop)
- return *(int *) prop->value;
- return 0;
- }
-}
-
-static int check_cpu_node(struct device_node *dp, int *cur_inst,
- int (*compare)(struct device_node *, int, void *),
- void *compare_arg,
- struct device_node **dev_node, int *mid)
-{
- if (strcmp(dp->type, "cpu"))
- return -ENODEV;
-
- if (!compare(dp, *cur_inst, compare_arg)) {
- if (dev_node)
- *dev_node = dp;
- if (mid)
- *mid = get_cpu_mid(dp);
- return 0;
- }
-
- (*cur_inst)++;
-
- return -ENODEV;
-}
-
-static int __cpu_find_by(int (*compare)(struct device_node *, int, void *),
- void *compare_arg,
- struct device_node **dev_node, int *mid)
-{
- struct device_node *dp;
- int cur_inst;
-
- cur_inst = 0;
- for_each_node_by_type(dp, "cpu") {
- int err = check_cpu_node(dp, &cur_inst,
- compare, compare_arg,
- dev_node, mid);
- if (err == 0)
- return 0;
- }
-
- return -ENODEV;
-}
-
-static int cpu_instance_compare(struct device_node *dp, int instance, void *_arg)
-{
- int desired_instance = (int) (long) _arg;
-
- if (instance == desired_instance)
- return 0;
- return -ENODEV;
-}
-
-int cpu_find_by_instance(int instance, struct device_node **dev_node, int *mid)
-{
- return __cpu_find_by(cpu_instance_compare, (void *)(long)instance,
- dev_node, mid);
-}
-
-static int cpu_mid_compare(struct device_node *dp, int instance, void *_arg)
-{
- int desired_mid = (int) (long) _arg;
- int this_mid;
-
- this_mid = get_cpu_mid(dp);
- if (this_mid == desired_mid)
- return 0;
- return -ENODEV;
-}
-
-int cpu_find_by_mid(int mid, struct device_node **dev_node)
-{
- return __cpu_find_by(cpu_mid_compare, (void *)(long)mid,
- dev_node, NULL);
-}
-
-void __init device_scan(void)
-{
- /* FIX ME FAST... -DaveM */
- ioport_resource.end = 0xffffffffffffffffUL;
-
- prom_printf("Booting Linux...\n");
-
-#ifndef CONFIG_SMP
- {
- struct device_node *dp;
- int err, def;
-
- err = cpu_find_by_instance(0, &dp, NULL);
- if (err) {
- prom_printf("No cpu nodes, cannot continue\n");
- prom_halt();
- }
- cpu_data(0).clock_tick =
- of_getintprop_default(dp, "clock-frequency", 0);
-
- def = ((tlb_type == hypervisor) ?
- (8 * 1024) :
- (16 * 1024));
- cpu_data(0).dcache_size = of_getintprop_default(dp,
- "dcache-size",
- def);
-
- def = 32;
- cpu_data(0).dcache_line_size =
- of_getintprop_default(dp, "dcache-line-size", def);
-
- def = 16 * 1024;
- cpu_data(0).icache_size = of_getintprop_default(dp,
- "icache-size",
- def);
-
- def = 32;
- cpu_data(0).icache_line_size =
- of_getintprop_default(dp, "icache-line-size", def);
-
- def = ((tlb_type == hypervisor) ?
- (3 * 1024 * 1024) :
- (4 * 1024 * 1024));
- cpu_data(0).ecache_size = of_getintprop_default(dp,
- "ecache-size",
- def);
-
- def = 64;
- cpu_data(0).ecache_line_size =
- of_getintprop_default(dp, "ecache-line-size", def);
- printk("CPU[0]: Caches "
- "D[sz(%d):line_sz(%d)] "
- "I[sz(%d):line_sz(%d)] "
- "E[sz(%d):line_sz(%d)]\n",
- cpu_data(0).dcache_size, cpu_data(0).dcache_line_size,
- cpu_data(0).icache_size, cpu_data(0).icache_line_size,
- cpu_data(0).ecache_size, cpu_data(0).ecache_line_size);
- }
-#endif
-
- sun4v_virtual_device_probe();
- central_probe();
-
- cpu_probe();
-}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-12 06:39:42 +0000