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hc
2024-01-03 2f7c68cb55ecb7331f2381deb497c27155f32faf 
 kernel/arch/mips/sgi-ip27/ip27-init.c
....@@ -13,56 +13,42 @@
1313 #include <linux/mm.h>
1414 #include <linux/export.h>
1515 #include <linux/cpumask.h>
16
+#include <asm/bootinfo.h>
1617 #include <asm/cpu.h>
1718 #include <asm/io.h>
18
-#include <asm/pgtable.h>
19
+#include <asm/sgialib.h>
1920 #include <asm/time.h>
21
+#include <asm/sn/agent.h>
2022 #include <asm/sn/types.h>
21
-#include <asm/sn/sn0/addrs.h>
22
-#include <asm/sn/sn0/hubni.h>
23
-#include <asm/sn/sn0/hubio.h>
2423 #include <asm/sn/klconfig.h>
2524 #include <asm/sn/ioc3.h>
2625 #include <asm/mipsregs.h>
2726 #include <asm/sn/gda.h>
28
-#include <asm/sn/hub.h>
2927 #include <asm/sn/intr.h>
3028 #include <asm/current.h>
3129 #include <asm/processor.h>
3230 #include <asm/mmu_context.h>
3331 #include <asm/thread_info.h>
3432 #include <asm/sn/launch.h>
35
-#include <asm/sn/sn_private.h>
36
-#include <asm/sn/sn0/ip27.h>
3733 #include <asm/sn/mapped_kernel.h>
34
+
35
+#include "ip27-common.h"
3836 
3937 #define CPU_NONE		(cpuid_t)-1
4038 
41
-static DECLARE_BITMAP(hub_init_mask, MAX_COMPACT_NODES);
39
+static DECLARE_BITMAP(hub_init_mask, MAX_NUMNODES);
4240 nasid_t master_nasid = INVALID_NASID;
43
-
44
-cnodeid_t	nasid_to_compact_node[MAX_NASIDS];
45
-nasid_t		compact_to_nasid_node[MAX_COMPACT_NODES];
46
-cnodeid_t	cpuid_to_compact_node[MAXCPUS];
47
-
48
-EXPORT_SYMBOL(nasid_to_compact_node);
4941 
5042 struct cpuinfo_ip27 sn_cpu_info[NR_CPUS];
5143 EXPORT_SYMBOL_GPL(sn_cpu_info);
5244 
53
-extern void pcibr_setup(cnodeid_t);
54
-
55
-extern void xtalk_probe_node(cnodeid_t nid);
56
-
57
-static void per_hub_init(cnodeid_t cnode)
45
+static void per_hub_init(nasid_t nasid)
5846 {
59
-	struct hub_data *hub = hub_data(cnode);
60
-	nasid_t nasid = COMPACT_TO_NASID_NODEID(cnode);
61
-	int i;
47
+	struct hub_data *hub = hub_data(nasid);
6248 
6349 	cpumask_set_cpu(smp_processor_id(), &hub->h_cpus);
6450 
65
-	if (test_and_set_bit(cnode, hub_init_mask))
51
+	if (test_and_set_bit(nasid, hub_init_mask))
6652 		return;
6753 	/*
6854 	 * Set CRB timeout at 5ms, (< PI timeout of 10ms)
....@@ -70,115 +56,44 @@
7056 	REMOTE_HUB_S(nasid, IIO_ICTP, 0x800);
7157 	REMOTE_HUB_S(nasid, IIO_ICTO, 0xff);
7258 
73
-	hub_rtc_init(cnode);
74
-	xtalk_probe_node(cnode);
59
+	hub_rtc_init(nasid);
7560 
76
-#ifdef CONFIG_REPLICATE_EXHANDLERS
77
-	/*
78
-	 * If this is not a headless node initialization,
79
-	 * copy over the caliased exception handlers.
80
-	 */
81
-	if (get_compact_nodeid() == cnode) {
82
-		extern char except_vec2_generic, except_vec3_generic;
83
-		extern void build_tlb_refill_handler(void);
84
-
85
-		memcpy((void *)(CKSEG0 + 0x100), &except_vec2_generic, 0x80);
86
-		memcpy((void *)(CKSEG0 + 0x180), &except_vec3_generic, 0x80);
87
-		build_tlb_refill_handler();
88
-		memcpy((void *)(CKSEG0 + 0x100), (void *) CKSEG0, 0x80);
89
-		memcpy((void *)(CKSEG0 + 0x180), &except_vec3_generic, 0x100);
61
+	if (nasid) {
62
+		/* copy exception handlers from first node to current node */
63
+		memcpy((void *)NODE_OFFSET_TO_K0(nasid, 0),
64
+		       (void *)CKSEG0, 0x200);
9065 		__flush_cache_all();
91
-	}
92
-#endif
93
-
94
-	/*
95
-	 * Some interrupts are reserved by hardware or by software convention.
96
-	 * Mark these as reserved right away so they won't be used accidentally
97
-	 * later.
98
-	 */
99
-	for (i = 0; i <= BASE_PCI_IRQ; i++) {
100
-		__set_bit(i, hub->irq_alloc_mask);
101
-		LOCAL_HUB_CLR_INTR(INT_PEND0_BASELVL + i);
102
-	}
103
-
104
-	__set_bit(IP_PEND0_6_63, hub->irq_alloc_mask);
105
-	LOCAL_HUB_S(PI_INT_PEND_MOD, IP_PEND0_6_63);
106
-
107
-	for (i = NI_BRDCAST_ERR_A; i <= MSC_PANIC_INTR; i++) {
108
-		__set_bit(i, hub->irq_alloc_mask);
109
-		LOCAL_HUB_CLR_INTR(INT_PEND1_BASELVL + i);
66
+		/* switch to node local exception handlers */
67
+		REMOTE_HUB_S(nasid, PI_CALIAS_SIZE, PI_CALIAS_SIZE_8K);
11068 	}
11169 }
11270 
11371 void per_cpu_init(void)
11472 {
11573 	int cpu = smp_processor_id();
116
-	int slice = LOCAL_HUB_L(PI_CPU_NUM);
117
-	cnodeid_t cnode = get_compact_nodeid();
118
-	struct hub_data *hub = hub_data(cnode);
119
-	struct slice_data *si = hub->slice + slice;
120
-	int i;
121
-
122
-	if (test_and_set_bit(slice, &hub->slice_map))
123
-		return;
74
+	nasid_t nasid = get_nasid();
12475 
12576 	clear_c0_status(ST0_IM);
12677 
127
-	per_hub_init(cnode);
78
+	per_hub_init(nasid);
12879 
129
-	for (i = 0; i < LEVELS_PER_SLICE; i++)
130
-		si->level_to_irq[i] = -1;
80
+	pr_info("CPU %d clock is %dMHz.\n", cpu, sn_cpu_info[cpu].p_speed);
13181 
132
-	/*
133
-	 * We use this so we can find the local hub's data as fast as only
134
-	 * possible.
135
-	 */
136
-	cpu_data[cpu].data = si;
137
-
138
-	cpu_time_init();
13982 	install_ipi();
14083 
14184 	/* Install our NMI handler if symmon hasn't installed one. */
14285 	install_cpu_nmi_handler(cputoslice(cpu));
14386 
144
-	set_c0_status(SRB_DEV0 | SRB_DEV1);
87
+	enable_percpu_irq(IP27_HUB_PEND0_IRQ, IRQ_TYPE_NONE);
88
+	enable_percpu_irq(IP27_HUB_PEND1_IRQ, IRQ_TYPE_NONE);
14589 }
146
-
147
-/*
148
- * get_nasid() returns the physical node id number of the caller.
149
- */
150
-nasid_t
151
-get_nasid(void)
152
-{
153
-	return (nasid_t)((LOCAL_HUB_L(NI_STATUS_REV_ID) & NSRI_NODEID_MASK)
154
-			 >> NSRI_NODEID_SHFT);
155
-}
156
-
157
-/*
158
- * Map the physical node id to a virtual node id (virtual node ids are contiguous).
159
- */
160
-cnodeid_t get_compact_nodeid(void)
161
-{
162
-	return NASID_TO_COMPACT_NODEID(get_nasid());
163
-}
164
-
165
-static inline void ioc3_eth_init(void)
166
-{
167
-	struct ioc3 *ioc3;
168
-	nasid_t nid;
169
-
170
-	nid = get_nasid();
171
-	ioc3 = (struct ioc3 *) KL_CONFIG_CH_CONS_INFO(nid)->memory_base;
172
-
173
-	ioc3->eier = 0;
174
-}
175
-
176
-extern void ip27_reboot_setup(void);
17790 
17891 void __init plat_mem_setup(void)
17992 {
180
-	hubreg_t p, e, n_mode;
93
+	u64 p, e, n_mode;
18194 	nasid_t nid;
95
+
96
+	register_smp_ops(&ip27_smp_ops);
18297 
18398 	ip27_reboot_setup();
18499 
....@@ -214,8 +129,19 @@
214129 		panic("Kernel compiled for N mode.");
215130 #endif
216131 
217
-	ioc3_eth_init();
218
-	per_cpu_init();
219
-
132
+	ioport_resource.start = 0;
133
+	ioport_resource.end = ~0UL;
220134 	set_io_port_base(IO_BASE);
221135 }
136
+
137
+const char *get_system_type(void)
138
+{
139
+	return "SGI Origin";
140
+}
141
+
142
+void __init prom_init(void)
143
+{
144
+	prom_init_cmdline(fw_arg0, (LONG *)fw_arg1);
145
+	prom_meminit();
146
+}
147
+