Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394...
[sfrench/cifs-2.6.git] / arch / powerpc / platforms / cell / setup.c
1 /*
2  *  linux/arch/powerpc/platforms/cell/cell_setup.c
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
8  *  Modified by Cell Team, IBM Deutschland Entwicklung GmbH
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
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>
22 #include <linux/slab.h>
23 #include <linux/user.h>
24 #include <linux/reboot.h>
25 #include <linux/init.h>
26 #include <linux/delay.h>
27 #include <linux/irq.h>
28 #include <linux/seq_file.h>
29 #include <linux/root_dev.h>
30 #include <linux/console.h>
31 #include <linux/mutex.h>
32 #include <linux/memory_hotplug.h>
33 #include <linux/of_platform.h>
34
35 #include <asm/mmu.h>
36 #include <asm/processor.h>
37 #include <asm/io.h>
38 #include <asm/kexec.h>
39 #include <asm/pgtable.h>
40 #include <asm/prom.h>
41 #include <asm/rtas.h>
42 #include <asm/pci-bridge.h>
43 #include <asm/iommu.h>
44 #include <asm/dma.h>
45 #include <asm/machdep.h>
46 #include <asm/time.h>
47 #include <asm/nvram.h>
48 #include <asm/cputable.h>
49 #include <asm/ppc-pci.h>
50 #include <asm/irq.h>
51 #include <asm/spu.h>
52 #include <asm/spu_priv1.h>
53 #include <asm/udbg.h>
54 #include <asm/mpic.h>
55 #include <asm/cell-regs.h>
56
57 #include "interrupt.h"
58 #include "pervasive.h"
59 #include "ras.h"
60
61 #ifdef DEBUG
62 #define DBG(fmt...) udbg_printf(fmt)
63 #else
64 #define DBG(fmt...)
65 #endif
66
67 static void cell_show_cpuinfo(struct seq_file *m)
68 {
69         struct device_node *root;
70         const char *model = "";
71
72         root = of_find_node_by_path("/");
73         if (root)
74                 model = of_get_property(root, "model", NULL);
75         seq_printf(m, "machine\t\t: CHRP %s\n", model);
76         of_node_put(root);
77 }
78
79 static void cell_progress(char *s, unsigned short hex)
80 {
81         printk("*** %04x : %s\n", hex, s ? s : "");
82 }
83
84 static void cell_fixup_pcie_rootcomplex(struct pci_dev *dev)
85 {
86         struct pci_controller *hose;
87         const char *s;
88         int i;
89
90         if (!machine_is(cell))
91                 return;
92
93         /* We're searching for a direct child of the PHB */
94         if (dev->bus->self != NULL || dev->devfn != 0)
95                 return;
96
97         hose = pci_bus_to_host(dev->bus);
98         if (hose == NULL)
99                 return;
100
101         /* Only on PCIE */
102         if (!of_device_is_compatible(hose->dn, "pciex"))
103                 return;
104
105         /* And only on axon */
106         s = of_get_property(hose->dn, "model", NULL);
107         if (!s || strcmp(s, "Axon") != 0)
108                 return;
109
110         for (i = 0; i < PCI_BRIDGE_RESOURCES; i++) {
111                 dev->resource[i].start = dev->resource[i].end = 0;
112                 dev->resource[i].flags = 0;
113         }
114
115         printk(KERN_DEBUG "PCI: Hiding resources on Axon PCIE RC %s\n",
116                pci_name(dev));
117 }
118 DECLARE_PCI_FIXUP_HEADER(PCI_ANY_ID, PCI_ANY_ID, cell_fixup_pcie_rootcomplex);
119
120 static int __init cell_publish_devices(void)
121 {
122         int node;
123
124         /* Publish OF platform devices for southbridge IOs */
125         of_platform_bus_probe(NULL, NULL, NULL);
126
127         /* There is no device for the MIC memory controller, thus we create
128          * a platform device for it to attach the EDAC driver to.
129          */
130         for_each_online_node(node) {
131                 if (cbe_get_cpu_mic_tm_regs(cbe_node_to_cpu(node)) == NULL)
132                         continue;
133                 platform_device_register_simple("cbe-mic", node, NULL, 0);
134         }
135         return 0;
136 }
137 machine_subsys_initcall(cell, cell_publish_devices);
138
139 static void cell_mpic_cascade(unsigned int irq, struct irq_desc *desc)
140 {
141         struct mpic *mpic = desc->handler_data;
142         unsigned int virq;
143
144         virq = mpic_get_one_irq(mpic);
145         if (virq != NO_IRQ)
146                 generic_handle_irq(virq);
147         desc->chip->eoi(irq);
148 }
149
150 static void __init mpic_init_IRQ(void)
151 {
152         struct device_node *dn;
153         struct mpic *mpic;
154         unsigned int virq;
155
156         for (dn = NULL;
157              (dn = of_find_node_by_name(dn, "interrupt-controller"));) {
158                 if (!of_device_is_compatible(dn, "CBEA,platform-open-pic"))
159                         continue;
160
161                 /* The MPIC driver will get everything it needs from the
162                  * device-tree, just pass 0 to all arguments
163                  */
164                 mpic = mpic_alloc(dn, 0, 0, 0, 0, " MPIC     ");
165                 if (mpic == NULL)
166                         continue;
167                 mpic_init(mpic);
168
169                 virq = irq_of_parse_and_map(dn, 0);
170                 if (virq == NO_IRQ)
171                         continue;
172
173                 printk(KERN_INFO "%s : hooking up to IRQ %d\n",
174                        dn->full_name, virq);
175                 set_irq_data(virq, mpic);
176                 set_irq_chained_handler(virq, cell_mpic_cascade);
177         }
178 }
179
180
181 static void __init cell_init_irq(void)
182 {
183         iic_init_IRQ();
184         spider_init_IRQ();
185         mpic_init_IRQ();
186 }
187
188 static void __init cell_set_dabrx(void)
189 {
190         mtspr(SPRN_DABRX, DABRX_KERNEL | DABRX_USER);
191 }
192
193 static void __init cell_setup_arch(void)
194 {
195 #ifdef CONFIG_SPU_BASE
196         spu_priv1_ops = &spu_priv1_mmio_ops;
197         spu_management_ops = &spu_management_of_ops;
198 #endif
199
200         cbe_regs_init();
201
202         cell_set_dabrx();
203
204 #ifdef CONFIG_CBE_RAS
205         cbe_ras_init();
206 #endif
207
208 #ifdef CONFIG_SMP
209         smp_init_cell();
210 #endif
211         /* init to some ~sane value until calibrate_delay() runs */
212         loops_per_jiffy = 50000000;
213
214         /* Find and initialize PCI host bridges */
215         init_pci_config_tokens();
216         find_and_init_phbs();
217         cbe_pervasive_init();
218 #ifdef CONFIG_DUMMY_CONSOLE
219         conswitchp = &dummy_con;
220 #endif
221
222         mmio_nvram_init();
223 }
224
225 static int __init cell_probe(void)
226 {
227         unsigned long root = of_get_flat_dt_root();
228
229         if (!of_flat_dt_is_compatible(root, "IBM,CBEA") &&
230             !of_flat_dt_is_compatible(root, "IBM,CPBW-1.0"))
231                 return 0;
232
233         hpte_init_native();
234
235         return 1;
236 }
237
238 define_machine(cell) {
239         .name                   = "Cell",
240         .probe                  = cell_probe,
241         .setup_arch             = cell_setup_arch,
242         .show_cpuinfo           = cell_show_cpuinfo,
243         .restart                = rtas_restart,
244         .power_off              = rtas_power_off,
245         .halt                   = rtas_halt,
246         .get_boot_time          = rtas_get_boot_time,
247         .get_rtc_time           = rtas_get_rtc_time,
248         .set_rtc_time           = rtas_set_rtc_time,
249         .calibrate_decr         = generic_calibrate_decr,
250         .progress               = cell_progress,
251         .init_IRQ               = cell_init_irq,
252         .pci_setup_phb          = rtas_setup_phb,
253 #ifdef CONFIG_KEXEC
254         .machine_kexec          = default_machine_kexec,
255         .machine_kexec_prepare  = default_machine_kexec_prepare,
256         .machine_crash_shutdown = default_machine_crash_shutdown,
257 #endif
258 };