]>
Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * This file is subject to the terms and conditions of the GNU General | |
3 | * Public License. See the file "COPYING" in the main directory of this | |
4 | * archive for more details. | |
5 | * | |
6 | * Copyright (C) 2000 - 2001 by Kanoj Sarcar (kanoj@sgi.com) | |
7 | * Copyright (C) 2000 - 2001 by Silicon Graphics, Inc. | |
8 | */ | |
1da177e4 LT |
9 | #include <linux/kernel.h> |
10 | #include <linux/init.h> | |
11 | #include <linux/sched.h> | |
631330f5 | 12 | #include <linux/smp.h> |
1da177e4 | 13 | #include <linux/mm.h> |
26dd3e4f | 14 | #include <linux/export.h> |
1da177e4 LT |
15 | #include <linux/cpumask.h> |
16 | #include <asm/cpu.h> | |
17 | #include <asm/io.h> | |
18 | #include <asm/pgtable.h> | |
19 | #include <asm/time.h> | |
20 | #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> | |
24 | #include <asm/sn/klconfig.h> | |
25 | #include <asm/sn/ioc3.h> | |
26 | #include <asm/mipsregs.h> | |
27 | #include <asm/sn/gda.h> | |
28 | #include <asm/sn/hub.h> | |
29 | #include <asm/sn/intr.h> | |
30 | #include <asm/current.h> | |
1da177e4 LT |
31 | #include <asm/processor.h> |
32 | #include <asm/mmu_context.h> | |
33 | #include <asm/thread_info.h> | |
34 | #include <asm/sn/launch.h> | |
35 | #include <asm/sn/sn_private.h> | |
36 | #include <asm/sn/sn0/ip27.h> | |
37 | #include <asm/sn/mapped_kernel.h> | |
38 | ||
39 | #define CPU_NONE (cpuid_t)-1 | |
40 | ||
41 | static DECLARE_BITMAP(hub_init_mask, MAX_COMPACT_NODES); | |
42 | 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); | |
49 | ||
cc6e8e08 RB |
50 | struct cpuinfo_ip27 sn_cpu_info[NR_CPUS]; |
51 | EXPORT_SYMBOL_GPL(sn_cpu_info); | |
52 | ||
1da177e4 LT |
53 | extern void pcibr_setup(cnodeid_t); |
54 | ||
078a55fc | 55 | static void per_hub_init(cnodeid_t cnode) |
1da177e4 LT |
56 | { |
57 | struct hub_data *hub = hub_data(cnode); | |
58 | nasid_t nasid = COMPACT_TO_NASID_NODEID(cnode); | |
59 | ||
8dd92891 | 60 | cpumask_set_cpu(smp_processor_id(), &hub->h_cpus); |
1da177e4 LT |
61 | |
62 | if (test_and_set_bit(cnode, hub_init_mask)) | |
63 | return; | |
1da177e4 LT |
64 | /* |
65 | * Set CRB timeout at 5ms, (< PI timeout of 10ms) | |
66 | */ | |
67 | REMOTE_HUB_S(nasid, IIO_ICTP, 0x800); | |
68 | REMOTE_HUB_S(nasid, IIO_ICTO, 0xff); | |
69 | ||
70 | hub_rtc_init(cnode); | |
1da177e4 LT |
71 | |
72 | #ifdef CONFIG_REPLICATE_EXHANDLERS | |
73 | /* | |
74 | * If this is not a headless node initialization, | |
75 | * copy over the caliased exception handlers. | |
76 | */ | |
77 | if (get_compact_nodeid() == cnode) { | |
78 | extern char except_vec2_generic, except_vec3_generic; | |
79 | extern void build_tlb_refill_handler(void); | |
80 | ||
81 | memcpy((void *)(CKSEG0 + 0x100), &except_vec2_generic, 0x80); | |
82 | memcpy((void *)(CKSEG0 + 0x180), &except_vec3_generic, 0x80); | |
83 | build_tlb_refill_handler(); | |
84 | memcpy((void *)(CKSEG0 + 0x100), (void *) CKSEG0, 0x80); | |
85 | memcpy((void *)(CKSEG0 + 0x180), &except_vec3_generic, 0x100); | |
86 | __flush_cache_all(); | |
87 | } | |
88 | #endif | |
89 | } | |
90 | ||
078a55fc | 91 | void per_cpu_init(void) |
1da177e4 LT |
92 | { |
93 | int cpu = smp_processor_id(); | |
94 | int slice = LOCAL_HUB_L(PI_CPU_NUM); | |
95 | cnodeid_t cnode = get_compact_nodeid(); | |
96 | struct hub_data *hub = hub_data(cnode); | |
1da177e4 LT |
97 | |
98 | if (test_and_set_bit(slice, &hub->slice_map)) | |
99 | return; | |
100 | ||
101 | clear_c0_status(ST0_IM); | |
102 | ||
4f12bfe5 RB |
103 | per_hub_init(cnode); |
104 | ||
1da177e4 LT |
105 | cpu_time_init(); |
106 | install_ipi(); | |
107 | ||
108 | /* Install our NMI handler if symmon hasn't installed one. */ | |
109 | install_cpu_nmi_handler(cputoslice(cpu)); | |
110 | ||
69a07a41 TB |
111 | enable_percpu_irq(IP27_HUB_PEND0_IRQ, IRQ_TYPE_NONE); |
112 | enable_percpu_irq(IP27_HUB_PEND1_IRQ, IRQ_TYPE_NONE); | |
1da177e4 LT |
113 | } |
114 | ||
115 | /* | |
116 | * get_nasid() returns the physical node id number of the caller. | |
117 | */ | |
118 | nasid_t | |
119 | get_nasid(void) | |
120 | { | |
121 | return (nasid_t)((LOCAL_HUB_L(NI_STATUS_REV_ID) & NSRI_NODEID_MASK) | |
70342287 | 122 | >> NSRI_NODEID_SHFT); |
1da177e4 LT |
123 | } |
124 | ||
125 | /* | |
126 | * Map the physical node id to a virtual node id (virtual node ids are contiguous). | |
127 | */ | |
128 | cnodeid_t get_compact_nodeid(void) | |
129 | { | |
130 | return NASID_TO_COMPACT_NODEID(get_nasid()); | |
131 | } | |
132 | ||
1da177e4 LT |
133 | static inline void ioc3_eth_init(void) |
134 | { | |
135 | struct ioc3 *ioc3; | |
136 | nasid_t nid; | |
137 | ||
138 | nid = get_nasid(); | |
139 | ioc3 = (struct ioc3 *) KL_CONFIG_CH_CONS_INFO(nid)->memory_base; | |
140 | ||
141 | ioc3->eier = 0; | |
142 | } | |
143 | ||
1da177e4 LT |
144 | extern void ip27_reboot_setup(void); |
145 | ||
2925aba4 | 146 | void __init plat_mem_setup(void) |
1da177e4 | 147 | { |
db0e7d4e | 148 | u64 p, e, n_mode; |
1da177e4 LT |
149 | nasid_t nid; |
150 | ||
1da177e4 LT |
151 | ip27_reboot_setup(); |
152 | ||
153 | /* | |
154 | * hub_rtc init and cpu clock intr enabled for later calibrate_delay. | |
155 | */ | |
156 | nid = get_nasid(); | |
157 | printk("IP27: Running on node %d.\n", nid); | |
158 | ||
159 | p = LOCAL_HUB_L(PI_CPU_PRESENT_A) & 1; | |
160 | e = LOCAL_HUB_L(PI_CPU_ENABLE_A) & 1; | |
161 | printk("Node %d has %s primary CPU%s.\n", nid, | |
162 | p ? "a" : "no", | |
163 | e ? ", CPU is running" : ""); | |
164 | ||
165 | p = LOCAL_HUB_L(PI_CPU_PRESENT_B) & 1; | |
166 | e = LOCAL_HUB_L(PI_CPU_ENABLE_B) & 1; | |
167 | printk("Node %d has %s secondary CPU%s.\n", nid, | |
168 | p ? "a" : "no", | |
169 | e ? ", CPU is running" : ""); | |
170 | ||
171 | /* | |
172 | * Try to catch kernel missconfigurations and give user an | |
173 | * indication what option to select. | |
174 | */ | |
175 | n_mode = LOCAL_HUB_L(NI_STATUS_REV_ID) & NSRI_MORENODES_MASK; | |
176 | printk("Machine is in %c mode.\n", n_mode ? 'N' : 'M'); | |
aa9772e3 | 177 | #ifdef CONFIG_SGI_SN_N_MODE |
1da177e4 LT |
178 | if (!n_mode) |
179 | panic("Kernel compiled for M mode."); | |
180 | #else | |
181 | if (n_mode) | |
182 | panic("Kernel compiled for N mode."); | |
183 | #endif | |
184 | ||
1da177e4 | 185 | ioc3_eth_init(); |
1da177e4 | 186 | |
a57140e9 TB |
187 | ioport_resource.start = 0; |
188 | ioport_resource.end = ~0UL; | |
1da177e4 | 189 | set_io_port_base(IO_BASE); |
1da177e4 | 190 | } |