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fef1c772 | 1 | /* |
f3f66f59 | 2 | * linux/arch/powerpc/platforms/cell/cell_setup.c |
fef1c772 AB |
3 | * |
4 | * Copyright (C) 1995 Linus Torvalds | |
5 | * Adapted from 'alpha' version by Gary Thomas | |
6 | * Modified by Cort Dougan (cort@cs.nmt.edu) | |
7 | * Modified by PPC64 Team, IBM Corp | |
f3f66f59 | 8 | * Modified by Cell Team, IBM Deutschland Entwicklung GmbH |
fef1c772 AB |
9 | * |
10 | * This program is free software; you can redistribute it and/or | |
11 | * modify it under the terms of the GNU General Public License | |
12 | * as published by the Free Software Foundation; either version | |
13 | * 2 of the License, or (at your option) any later version. | |
14 | */ | |
15 | #undef DEBUG | |
16 | ||
fef1c772 AB |
17 | #include <linux/sched.h> |
18 | #include <linux/kernel.h> | |
19 | #include <linux/mm.h> | |
20 | #include <linux/stddef.h> | |
21 | #include <linux/unistd.h> | |
fef1c772 AB |
22 | #include <linux/user.h> |
23 | #include <linux/reboot.h> | |
24 | #include <linux/init.h> | |
25 | #include <linux/delay.h> | |
26 | #include <linux/irq.h> | |
27 | #include <linux/seq_file.h> | |
28 | #include <linux/root_dev.h> | |
29 | #include <linux/console.h> | |
bed120c6 JS |
30 | #include <linux/mutex.h> |
31 | #include <linux/memory_hotplug.h> | |
d8caf74f | 32 | #include <linux/of_platform.h> |
fef1c772 AB |
33 | |
34 | #include <asm/mmu.h> | |
35 | #include <asm/processor.h> | |
36 | #include <asm/io.h> | |
37 | #include <asm/pgtable.h> | |
38 | #include <asm/prom.h> | |
39 | #include <asm/rtas.h> | |
40 | #include <asm/pci-bridge.h> | |
41 | #include <asm/iommu.h> | |
42 | #include <asm/dma.h> | |
43 | #include <asm/machdep.h> | |
44 | #include <asm/time.h> | |
45 | #include <asm/nvram.h> | |
46 | #include <asm/cputable.h> | |
d387899f | 47 | #include <asm/ppc-pci.h> |
40ef8cbc | 48 | #include <asm/irq.h> |
bed120c6 | 49 | #include <asm/spu.h> |
540270d8 | 50 | #include <asm/spu_priv1.h> |
609c9991 | 51 | #include <asm/udbg.h> |
21fb5a1d | 52 | #include <asm/mpic.h> |
eef686a0 | 53 | #include <asm/cell-regs.h> |
fef1c772 | 54 | |
f3f66f59 | 55 | #include "interrupt.h" |
c902be71 | 56 | #include "pervasive.h" |
acf7d768 | 57 | #include "ras.h" |
7cfb62a2 | 58 | #include "io-workarounds.h" |
fef1c772 AB |
59 | |
60 | #ifdef DEBUG | |
61 | #define DBG(fmt...) udbg_printf(fmt) | |
62 | #else | |
63 | #define DBG(fmt...) | |
64 | #endif | |
65 | ||
8fce10a3 | 66 | static void cell_show_cpuinfo(struct seq_file *m) |
fef1c772 AB |
67 | { |
68 | struct device_node *root; | |
69 | const char *model = ""; | |
70 | ||
71 | root = of_find_node_by_path("/"); | |
72 | if (root) | |
e2eb6392 | 73 | model = of_get_property(root, "model", NULL); |
f3f66f59 | 74 | seq_printf(m, "machine\t\t: CHRP %s\n", model); |
fef1c772 AB |
75 | of_node_put(root); |
76 | } | |
77 | ||
f3f66f59 | 78 | static void cell_progress(char *s, unsigned short hex) |
fef1c772 AB |
79 | { |
80 | printk("*** %04x : %s\n", hex, s ? s : ""); | |
81 | } | |
82 | ||
ebf3a650 ME |
83 | static void cell_fixup_pcie_rootcomplex(struct pci_dev *dev) |
84 | { | |
85 | struct pci_controller *hose; | |
86 | const char *s; | |
87 | int i; | |
88 | ||
89 | if (!machine_is(cell)) | |
90 | return; | |
91 | ||
92 | /* We're searching for a direct child of the PHB */ | |
93 | if (dev->bus->self != NULL || dev->devfn != 0) | |
94 | return; | |
95 | ||
96 | hose = pci_bus_to_host(dev->bus); | |
97 | if (hose == NULL) | |
98 | return; | |
99 | ||
100 | /* Only on PCIE */ | |
101 | if (!of_device_is_compatible(hose->dn, "pciex")) | |
102 | return; | |
103 | ||
104 | /* And only on axon */ | |
105 | s = of_get_property(hose->dn, "model", NULL); | |
106 | if (!s || strcmp(s, "Axon") != 0) | |
107 | return; | |
108 | ||
109 | for (i = 0; i < PCI_BRIDGE_RESOURCES; i++) { | |
110 | dev->resource[i].start = dev->resource[i].end = 0; | |
111 | dev->resource[i].flags = 0; | |
112 | } | |
113 | ||
114 | printk(KERN_DEBUG "PCI: Hiding resources on Axon PCIE RC %s\n", | |
115 | pci_name(dev)); | |
116 | } | |
117 | DECLARE_PCI_FIXUP_HEADER(PCI_ANY_ID, PCI_ANY_ID, cell_fixup_pcie_rootcomplex); | |
118 | ||
7cfb62a2 IK |
119 | static int __devinit cell_setup_phb(struct pci_controller *phb) |
120 | { | |
121 | const char *model; | |
122 | struct device_node *np; | |
123 | ||
124 | int rc = rtas_setup_phb(phb); | |
125 | if (rc) | |
126 | return rc; | |
127 | ||
128 | np = phb->dn; | |
129 | model = of_get_property(np, "model", NULL); | |
130 | if (model == NULL || strcmp(np->name, "pci")) | |
131 | return 0; | |
132 | ||
133 | /* Setup workarounds for spider */ | |
134 | if (strcmp(model, "Spider")) | |
135 | return 0; | |
136 | ||
137 | iowa_register_bus(phb, &spiderpci_ops, &spiderpci_iowa_init, | |
138 | (void *)SPIDER_PCI_REG_BASE); | |
139 | io_workaround_init(); | |
140 | ||
141 | return 0; | |
142 | } | |
143 | ||
96289b07 BH |
144 | static int __init cell_publish_devices(void) |
145 | { | |
7cfb62a2 IK |
146 | struct device_node *root = of_find_node_by_path("/"); |
147 | struct device_node *np; | |
d767efe3 BH |
148 | int node; |
149 | ||
86810878 BH |
150 | /* Publish OF platform devices for southbridge IOs */ |
151 | of_platform_bus_probe(NULL, NULL, NULL); | |
152 | ||
7cfb62a2 IK |
153 | /* On spider based blades, we need to manually create the OF |
154 | * platform devices for the PCI host bridges | |
155 | */ | |
156 | for_each_child_of_node(root, np) { | |
157 | if (np->type == NULL || (strcmp(np->type, "pci") != 0 && | |
158 | strcmp(np->type, "pciex") != 0)) | |
159 | continue; | |
160 | of_platform_device_create(np, NULL, NULL); | |
161 | } | |
162 | ||
d767efe3 BH |
163 | /* There is no device for the MIC memory controller, thus we create |
164 | * a platform device for it to attach the EDAC driver to. | |
165 | */ | |
166 | for_each_online_node(node) { | |
167 | if (cbe_get_cpu_mic_tm_regs(cbe_node_to_cpu(node)) == NULL) | |
168 | continue; | |
169 | platform_device_register_simple("cbe-mic", node, NULL, 0); | |
170 | } | |
7cfb62a2 | 171 | |
96289b07 BH |
172 | return 0; |
173 | } | |
bb125fb0 | 174 | machine_subsys_initcall(cell, cell_publish_devices); |
96289b07 | 175 | |
21fb5a1d BH |
176 | static void cell_mpic_cascade(unsigned int irq, struct irq_desc *desc) |
177 | { | |
178 | struct mpic *mpic = desc->handler_data; | |
179 | unsigned int virq; | |
180 | ||
181 | virq = mpic_get_one_irq(mpic); | |
182 | if (virq != NO_IRQ) | |
183 | generic_handle_irq(virq); | |
184 | desc->chip->eoi(irq); | |
185 | } | |
186 | ||
187 | static void __init mpic_init_IRQ(void) | |
188 | { | |
189 | struct device_node *dn; | |
190 | struct mpic *mpic; | |
191 | unsigned int virq; | |
192 | ||
193 | for (dn = NULL; | |
194 | (dn = of_find_node_by_name(dn, "interrupt-controller"));) { | |
55b61fec | 195 | if (!of_device_is_compatible(dn, "CBEA,platform-open-pic")) |
21fb5a1d BH |
196 | continue; |
197 | ||
198 | /* The MPIC driver will get everything it needs from the | |
199 | * device-tree, just pass 0 to all arguments | |
200 | */ | |
201 | mpic = mpic_alloc(dn, 0, 0, 0, 0, " MPIC "); | |
202 | if (mpic == NULL) | |
203 | continue; | |
204 | mpic_init(mpic); | |
205 | ||
206 | virq = irq_of_parse_and_map(dn, 0); | |
207 | if (virq == NO_IRQ) | |
208 | continue; | |
209 | ||
210 | printk(KERN_INFO "%s : hooking up to IRQ %d\n", | |
211 | dn->full_name, virq); | |
212 | set_irq_data(virq, mpic); | |
213 | set_irq_chained_handler(virq, cell_mpic_cascade); | |
214 | } | |
215 | } | |
216 | ||
217 | ||
b9e5b4e6 BH |
218 | static void __init cell_init_irq(void) |
219 | { | |
220 | iic_init_IRQ(); | |
221 | spider_init_IRQ(); | |
21fb5a1d | 222 | mpic_init_IRQ(); |
b9e5b4e6 BH |
223 | } |
224 | ||
f3c1ed97 JO |
225 | static void __init cell_set_dabrx(void) |
226 | { | |
227 | mtspr(SPRN_DABRX, DABRX_KERNEL | DABRX_USER); | |
228 | } | |
229 | ||
f3f66f59 | 230 | static void __init cell_setup_arch(void) |
fef1c772 | 231 | { |
540270d8 | 232 | #ifdef CONFIG_SPU_BASE |
e28b0031 GL |
233 | spu_priv1_ops = &spu_priv1_mmio_ops; |
234 | spu_management_ops = &spu_management_of_ops; | |
540270d8 | 235 | #endif |
cebf589c | 236 | |
acf7d768 BH |
237 | cbe_regs_init(); |
238 | ||
f3c1ed97 JO |
239 | cell_set_dabrx(); |
240 | ||
acf7d768 BH |
241 | #ifdef CONFIG_CBE_RAS |
242 | cbe_ras_init(); | |
243 | #endif | |
244 | ||
fef1c772 | 245 | #ifdef CONFIG_SMP |
f3f66f59 | 246 | smp_init_cell(); |
fef1c772 | 247 | #endif |
fef1c772 AB |
248 | /* init to some ~sane value until calibrate_delay() runs */ |
249 | loops_per_jiffy = 50000000; | |
250 | ||
fef1c772 AB |
251 | /* Find and initialize PCI host bridges */ |
252 | init_pci_config_tokens(); | |
7cfb62a2 | 253 | |
acf7d768 | 254 | cbe_pervasive_init(); |
fef1c772 AB |
255 | #ifdef CONFIG_DUMMY_CONSOLE |
256 | conswitchp = &dummy_con; | |
257 | #endif | |
258 | ||
f3f66f59 | 259 | mmio_nvram_init(); |
fef1c772 AB |
260 | } |
261 | ||
e8222502 | 262 | static int __init cell_probe(void) |
fef1c772 | 263 | { |
e8222502 | 264 | unsigned long root = of_get_flat_dt_root(); |
fef1c772 | 265 | |
7d0daae4 ME |
266 | if (!of_flat_dt_is_compatible(root, "IBM,CBEA") && |
267 | !of_flat_dt_is_compatible(root, "IBM,CPBW-1.0")) | |
268 | return 0; | |
269 | ||
270 | hpte_init_native(); | |
133dda1e | 271 | |
7d0daae4 | 272 | return 1; |
fef1c772 AB |
273 | } |
274 | ||
e8222502 BH |
275 | define_machine(cell) { |
276 | .name = "Cell", | |
f3f66f59 AB |
277 | .probe = cell_probe, |
278 | .setup_arch = cell_setup_arch, | |
f3f66f59 | 279 | .show_cpuinfo = cell_show_cpuinfo, |
fef1c772 AB |
280 | .restart = rtas_restart, |
281 | .power_off = rtas_power_off, | |
282 | .halt = rtas_halt, | |
283 | .get_boot_time = rtas_get_boot_time, | |
284 | .get_rtc_time = rtas_get_rtc_time, | |
285 | .set_rtc_time = rtas_set_rtc_time, | |
286 | .calibrate_decr = generic_calibrate_decr, | |
f3f66f59 | 287 | .progress = cell_progress, |
b9e5b4e6 | 288 | .init_IRQ = cell_init_irq, |
7cfb62a2 | 289 | .pci_setup_phb = cell_setup_phb, |
fef1c772 | 290 | }; |