From 01573e231f18eb2d99162747186f59511f56b64d Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 08 Dec 2023 10:40:48 +0000
Subject: [PATCH] 移去rt
---
kernel/arch/mips/sgi-ip27/ip27-init.c | 150 ++++++++++++-------------------------------------
1 files changed, 38 insertions(+), 112 deletions(-)
diff --git a/kernel/arch/mips/sgi-ip27/ip27-init.c b/kernel/arch/mips/sgi-ip27/ip27-init.c
index e501c43..a4daf8c 100644
--- a/kernel/arch/mips/sgi-ip27/ip27-init.c
+++ b/kernel/arch/mips/sgi-ip27/ip27-init.c
@@ -13,56 +13,42 @@
#include <linux/mm.h>
#include <linux/export.h>
#include <linux/cpumask.h>
+#include <asm/bootinfo.h>
#include <asm/cpu.h>
#include <asm/io.h>
-#include <asm/pgtable.h>
+#include <asm/sgialib.h>
#include <asm/time.h>
+#include <asm/sn/agent.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>
+
+#include "ip27-common.h"
#define CPU_NONE (cpuid_t)-1
-static DECLARE_BITMAP(hub_init_mask, MAX_COMPACT_NODES);
+static DECLARE_BITMAP(hub_init_mask, MAX_NUMNODES);
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);
-
-extern void xtalk_probe_node(cnodeid_t nid);
-
-static void per_hub_init(cnodeid_t cnode)
+static void per_hub_init(nasid_t nasid)
{
- struct hub_data *hub = hub_data(cnode);
- nasid_t nasid = COMPACT_TO_NASID_NODEID(cnode);
- int i;
+ struct hub_data *hub = hub_data(nasid);
cpumask_set_cpu(smp_processor_id(), &hub->h_cpus);
- if (test_and_set_bit(cnode, hub_init_mask))
+ if (test_and_set_bit(nasid, hub_init_mask))
return;
/*
* Set CRB timeout at 5ms, (< PI timeout of 10ms)
@@ -70,115 +56,44 @@
REMOTE_HUB_S(nasid, IIO_ICTP, 0x800);
REMOTE_HUB_S(nasid, IIO_ICTO, 0xff);
- hub_rtc_init(cnode);
- xtalk_probe_node(cnode);
+ hub_rtc_init(nasid);
-#ifdef CONFIG_REPLICATE_EXHANDLERS
- /*
- * If this is not a headless node initialization,
- * copy over the caliased exception handlers.
- */
- if (get_compact_nodeid() == cnode) {
- extern char except_vec2_generic, except_vec3_generic;
- extern void build_tlb_refill_handler(void);
-
- memcpy((void *)(CKSEG0 + 0x100), &except_vec2_generic, 0x80);
- memcpy((void *)(CKSEG0 + 0x180), &except_vec3_generic, 0x80);
- build_tlb_refill_handler();
- memcpy((void *)(CKSEG0 + 0x100), (void *) CKSEG0, 0x80);
- memcpy((void *)(CKSEG0 + 0x180), &except_vec3_generic, 0x100);
+ 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();
- }
-#endif
-
- /*
- * Some interrupts are reserved by hardware or by software convention.
- * Mark these as reserved right away so they won't be used accidentally
- * later.
- */
- for (i = 0; i <= BASE_PCI_IRQ; i++) {
- __set_bit(i, hub->irq_alloc_mask);
- LOCAL_HUB_CLR_INTR(INT_PEND0_BASELVL + i);
- }
-
- __set_bit(IP_PEND0_6_63, hub->irq_alloc_mask);
- LOCAL_HUB_S(PI_INT_PEND_MOD, IP_PEND0_6_63);
-
- for (i = NI_BRDCAST_ERR_A; i <= MSC_PANIC_INTR; i++) {
- __set_bit(i, hub->irq_alloc_mask);
- LOCAL_HUB_CLR_INTR(INT_PEND1_BASELVL + i);
+ /* 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);
- struct slice_data *si = hub->slice + slice;
- int i;
-
- if (test_and_set_bit(slice, &hub->slice_map))
- return;
+ nasid_t nasid = get_nasid();
clear_c0_status(ST0_IM);
- per_hub_init(cnode);
+ per_hub_init(nasid);
- for (i = 0; i < LEVELS_PER_SLICE; i++)
- si->level_to_irq[i] = -1;
+ pr_info("CPU %d clock is %dMHz.\n", cpu, sn_cpu_info[cpu].p_speed);
- /*
- * We use this so we can find the local hub's data as fast as only
- * possible.
- */
- cpu_data[cpu].data = si;
-
- cpu_time_init();
install_ipi();
/* Install our NMI handler if symmon hasn't installed one. */
install_cpu_nmi_handler(cputoslice(cpu));
- set_c0_status(SRB_DEV0 | SRB_DEV1);
+ 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());
-}
-
-static inline void ioc3_eth_init(void)
-{
- struct ioc3 *ioc3;
- nasid_t nid;
-
- nid = get_nasid();
- ioc3 = (struct ioc3 *) KL_CONFIG_CH_CONS_INFO(nid)->memory_base;
-
- ioc3->eier = 0;
-}
-
-extern void ip27_reboot_setup(void);
void __init plat_mem_setup(void)
{
- hubreg_t p, e, n_mode;
+ u64 p, e, n_mode;
nasid_t nid;
+
+ register_smp_ops(&ip27_smp_ops);
ip27_reboot_setup();
@@ -214,8 +129,19 @@
panic("Kernel compiled for N mode.");
#endif
- ioc3_eth_init();
- per_cpu_init();
-
+ ioport_resource.start = 0;
+ ioport_resource.end = ~0UL;
set_io_port_base(IO_BASE);
}
+
+const char *get_system_type(void)
+{
+ return "SGI Origin";
+}
+
+void __init prom_init(void)
+{
+ prom_init_cmdline(fw_arg0, (LONG *)fw_arg1);
+ prom_meminit();
+}
+
--
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