169 lines
4.1 KiB
C
169 lines
4.1 KiB
C
|
/*
|
||
|
|
* This file is subject to the terms and conditions of the GNU General
|
||
|
|
* Public License. See the file "COPYING" in the main directory of this
|
||
|
|
* archive for more details.
|
||
|
|
*
|
||
|
|
* Copyright (C) 2000 - 2001 by Kanoj Sarcar (kanoj@sgi.com)
|
||
|
|
* Copyright (C) 2000 - 2001 by Silicon Graphics, Inc.
|
||
|
|
*/
|
||
|
|
#include <linux/kernel.h>
|
||
|
|
#include <linux/init.h>
|
||
|
|
#include <linux/sched.h>
|
||
|
|
#include <linux/smp.h>
|
||
|
|
#include <linux/mm.h>
|
||
|
|
#include <linux/export.h>
|
||
|
|
#include <linux/cpumask.h>
|
||
|
|
#include <asm/cpu.h>
|
||
|
|
#include <asm/io.h>
|
||
|
|
#include <asm/pgtable.h>
|
||
|
|
#include <asm/time.h>
|
||
|
|
#include <asm/sn/types.h>
|
||
|
|
#include <asm/sn/sn0/addrs.h>
|
||
|
|
#include <asm/sn/sn0/hubni.h>
|
||
|
|
#include <asm/sn/sn0/hubio.h>
|
||
|
|
#include <asm/sn/klconfig.h>
|
||
|
|
#include <asm/sn/ioc3.h>
|
||
|
|
#include <asm/mipsregs.h>
|
||
|
|
#include <asm/sn/gda.h>
|
||
|
|
#include <asm/sn/hub.h>
|
||
|
|
#include <asm/sn/intr.h>
|
||
|
|
#include <asm/current.h>
|
||
|
|
#include <asm/processor.h>
|
||
|
|
#include <asm/mmu_context.h>
|
||
|
|
#include <asm/thread_info.h>
|
||
|
|
#include <asm/sn/launch.h>
|
||
|
|
#include <asm/sn/sn_private.h>
|
||
|
|
#include <asm/sn/sn0/ip27.h>
|
||
|
|
#include <asm/sn/mapped_kernel.h>
|
||
|
|
|
||
|
|
#define CPU_NONE (cpuid_t)-1
|
||
|
|
|
||
|
|
static DECLARE_BITMAP(hub_init_mask, MAX_COMPACT_NODES);
|
||
|
|
nasid_t master_nasid = INVALID_NASID;
|
||
|
|
|
||
|
|
cnodeid_t nasid_to_compact_node[MAX_NASIDS];
|
||
|
|
nasid_t compact_to_nasid_node[MAX_COMPACT_NODES];
|
||
|
|
cnodeid_t cpuid_to_compact_node[MAXCPUS];
|
||
|
|
|
||
|
|
EXPORT_SYMBOL(nasid_to_compact_node);
|
||
|
|
|
||
|
|
struct cpuinfo_ip27 sn_cpu_info[NR_CPUS];
|
||
|
|
EXPORT_SYMBOL_GPL(sn_cpu_info);
|
||
|
|
|
||
|
|
extern void pcibr_setup(cnodeid_t);
|
||
|
|
|
||
|
|
static void per_hub_init(cnodeid_t cnode)
|
||
|
|
{
|
||
|
|
struct hub_data *hub = hub_data(cnode);
|
||
|
|
nasid_t nasid = COMPACT_TO_NASID_NODEID(cnode);
|
||
|
|
|
||
|
|
cpumask_set_cpu(smp_processor_id(), &hub->h_cpus);
|
||
|
|
|
||
|
|
if (test_and_set_bit(cnode, hub_init_mask))
|
||
|
|
return;
|
||
|
|
/*
|
||
|
|
* Set CRB timeout at 5ms, (< PI timeout of 10ms)
|
||
|
|
*/
|
||
|
|
REMOTE_HUB_S(nasid, IIO_ICTP, 0x800);
|
||
|
|
REMOTE_HUB_S(nasid, IIO_ICTO, 0xff);
|
||
|
|
|
||
|
|
hub_rtc_init(cnode);
|
||
|
|
|
||
|
|
if (nasid) {
|
||
|
|
/* copy exception handlers from first node to current node */
|
||
|
|
memcpy((void *)NODE_OFFSET_TO_K0(nasid, 0),
|
||
|
|
(void *)CKSEG0, 0x200);
|
||
|
|
__flush_cache_all();
|
||
|
|
/* switch to node local exception handlers */
|
||
|
|
REMOTE_HUB_S(nasid, PI_CALIAS_SIZE, PI_CALIAS_SIZE_8K);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
void per_cpu_init(void)
|
||
|
|
{
|
||
|
|
int cpu = smp_processor_id();
|
||
|
|
int slice = LOCAL_HUB_L(PI_CPU_NUM);
|
||
|
|
cnodeid_t cnode = get_compact_nodeid();
|
||
|
|
struct hub_data *hub = hub_data(cnode);
|
||
|
|
|
||
|
|
if (test_and_set_bit(slice, &hub->slice_map))
|
||
|
|
return;
|
||
|
|
|
||
|
|
clear_c0_status(ST0_IM);
|
||
|
|
|
||
|
|
per_hub_init(cnode);
|
||
|
|
|
||
|
|
cpu_time_init();
|
||
|
|
install_ipi();
|
||
|
|
|
||
|
|
/* Install our NMI handler if symmon hasn't installed one. */
|
||
|
|
install_cpu_nmi_handler(cputoslice(cpu));
|
||
|
|
|
||
|
|
enable_percpu_irq(IP27_HUB_PEND0_IRQ, IRQ_TYPE_NONE);
|
||
|
|
enable_percpu_irq(IP27_HUB_PEND1_IRQ, IRQ_TYPE_NONE);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* get_nasid() returns the physical node id number of the caller.
|
||
|
|
*/
|
||
|
|
nasid_t
|
||
|
|
get_nasid(void)
|
||
|
|
{
|
||
|
|
return (nasid_t)((LOCAL_HUB_L(NI_STATUS_REV_ID) & NSRI_NODEID_MASK)
|
||
|
|
>> NSRI_NODEID_SHFT);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Map the physical node id to a virtual node id (virtual node ids are contiguous).
|
||
|
|
*/
|
||
|
|
cnodeid_t get_compact_nodeid(void)
|
||
|
|
{
|
||
|
|
return NASID_TO_COMPACT_NODEID(get_nasid());
|
||
|
|
}
|
||
|
|
|
||
|
|
extern void ip27_reboot_setup(void);
|
||
|
|
|
||
|
|
void __init plat_mem_setup(void)
|
||
|
|
{
|
||
|
|
u64 p, e, n_mode;
|
||
|
|
nasid_t nid;
|
||
|
|
|
||
|
|
ip27_reboot_setup();
|
||
|
|
|
||
|
|
/*
|
||
|
|
* hub_rtc init and cpu clock intr enabled for later calibrate_delay.
|
||
|
|
*/
|
||
|
|
nid = get_nasid();
|
||
|
|
printk("IP27: Running on node %d.\n", nid);
|
||
|
|
|
||
|
|
p = LOCAL_HUB_L(PI_CPU_PRESENT_A) & 1;
|
||
|
|
e = LOCAL_HUB_L(PI_CPU_ENABLE_A) & 1;
|
||
|
|
printk("Node %d has %s primary CPU%s.\n", nid,
|
||
|
|
p ? "a" : "no",
|
||
|
|
e ? ", CPU is running" : "");
|
||
|
|
|
||
|
|
p = LOCAL_HUB_L(PI_CPU_PRESENT_B) & 1;
|
||
|
|
e = LOCAL_HUB_L(PI_CPU_ENABLE_B) & 1;
|
||
|
|
printk("Node %d has %s secondary CPU%s.\n", nid,
|
||
|
|
p ? "a" : "no",
|
||
|
|
e ? ", CPU is running" : "");
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Try to catch kernel missconfigurations and give user an
|
||
|
|
* indication what option to select.
|
||
|
|
*/
|
||
|
|
n_mode = LOCAL_HUB_L(NI_STATUS_REV_ID) & NSRI_MORENODES_MASK;
|
||
|
|
printk("Machine is in %c mode.\n", n_mode ? 'N' : 'M');
|
||
|
|
#ifdef CONFIG_SGI_SN_N_MODE
|
||
|
|
if (!n_mode)
|
||
|
|
panic("Kernel compiled for M mode.");
|
||
|
|
#else
|
||
|
|
if (n_mode)
|
||
|
|
panic("Kernel compiled for N mode.");
|
||
|
|
#endif
|
||
|
|
|
||
|
|
ioport_resource.start = 0;
|
||
|
|
ioport_resource.end = ~0UL;
|
||
|
|
set_io_port_base(IO_BASE);
|
||
|
|
}
|