Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
[pandora-kernel.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/export.h>
22 #include <linux/unistd.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/pgtable.h>
39 #include <asm/prom.h>
40 #include <asm/rtas.h>
41 #include <asm/pci-bridge.h>
42 #include <asm/iommu.h>
43 #include <asm/dma.h>
44 #include <asm/machdep.h>
45 #include <asm/time.h>
46 #include <asm/nvram.h>
47 #include <asm/cputable.h>
48 #include <asm/ppc-pci.h>
49 #include <asm/irq.h>
50 #include <asm/spu.h>
51 #include <asm/spu_priv1.h>
52 #include <asm/udbg.h>
53 #include <asm/mpic.h>
54 #include <asm/cell-regs.h>
55 #include <asm/io-workarounds.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 __devinit cell_setup_phb(struct pci_controller *phb)
121 {
122         const char *model;
123         struct device_node *np;
124
125         int rc = rtas_setup_phb(phb);
126         if (rc)
127                 return rc;
128
129         np = phb->dn;
130         model = of_get_property(np, "model", NULL);
131         if (model == NULL || strcmp(np->name, "pci"))
132                 return 0;
133
134         /* Setup workarounds for spider */
135         if (strcmp(model, "Spider"))
136                 return 0;
137
138         iowa_register_bus(phb, &spiderpci_ops, &spiderpci_iowa_init,
139                                   (void *)SPIDER_PCI_REG_BASE);
140         return 0;
141 }
142
143 static const struct of_device_id cell_bus_ids[] __initdata = {
144         { .type = "soc", },
145         { .compatible = "soc", },
146         { .type = "spider", },
147         { .type = "axon", },
148         { .type = "plb5", },
149         { .type = "plb4", },
150         { .type = "opb", },
151         { .type = "ebc", },
152         {},
153 };
154
155 static int __init cell_publish_devices(void)
156 {
157         struct device_node *root = of_find_node_by_path("/");
158         struct device_node *np;
159         int node;
160
161         /* Publish OF platform devices for southbridge IOs */
162         of_platform_bus_probe(NULL, cell_bus_ids, NULL);
163
164         /* On spider based blades, we need to manually create the OF
165          * platform devices for the PCI host bridges
166          */
167         for_each_child_of_node(root, np) {
168                 if (np->type == NULL || (strcmp(np->type, "pci") != 0 &&
169                                          strcmp(np->type, "pciex") != 0))
170                         continue;
171                 of_platform_device_create(np, NULL, NULL);
172         }
173
174         /* There is no device for the MIC memory controller, thus we create
175          * a platform device for it to attach the EDAC driver to.
176          */
177         for_each_online_node(node) {
178                 if (cbe_get_cpu_mic_tm_regs(cbe_node_to_cpu(node)) == NULL)
179                         continue;
180                 platform_device_register_simple("cbe-mic", node, NULL, 0);
181         }
182
183         return 0;
184 }
185 machine_subsys_initcall(cell, cell_publish_devices);
186
187 static void cell_mpic_cascade(unsigned int irq, struct irq_desc *desc)
188 {
189         struct irq_chip *chip = irq_desc_get_chip(desc);
190         struct mpic *mpic = irq_desc_get_handler_data(desc);
191         unsigned int virq;
192
193         virq = mpic_get_one_irq(mpic);
194         if (virq != NO_IRQ)
195                 generic_handle_irq(virq);
196
197         chip->irq_eoi(&desc->irq_data);
198 }
199
200 static void __init mpic_init_IRQ(void)
201 {
202         struct device_node *dn;
203         struct mpic *mpic;
204         unsigned int virq;
205
206         for (dn = NULL;
207              (dn = of_find_node_by_name(dn, "interrupt-controller"));) {
208                 if (!of_device_is_compatible(dn, "CBEA,platform-open-pic"))
209                         continue;
210
211                 /* The MPIC driver will get everything it needs from the
212                  * device-tree, just pass 0 to all arguments
213                  */
214                 mpic = mpic_alloc(dn, 0, 0, 0, 0, " MPIC     ");
215                 if (mpic == NULL)
216                         continue;
217                 mpic_init(mpic);
218
219                 virq = irq_of_parse_and_map(dn, 0);
220                 if (virq == NO_IRQ)
221                         continue;
222
223                 printk(KERN_INFO "%s : hooking up to IRQ %d\n",
224                        dn->full_name, virq);
225                 irq_set_handler_data(virq, mpic);
226                 irq_set_chained_handler(virq, cell_mpic_cascade);
227         }
228 }
229
230
231 static void __init cell_init_irq(void)
232 {
233         iic_init_IRQ();
234         spider_init_IRQ();
235         mpic_init_IRQ();
236 }
237
238 static void __init cell_set_dabrx(void)
239 {
240         mtspr(SPRN_DABRX, DABRX_KERNEL | DABRX_USER);
241 }
242
243 static void __init cell_setup_arch(void)
244 {
245 #ifdef CONFIG_SPU_BASE
246         spu_priv1_ops = &spu_priv1_mmio_ops;
247         spu_management_ops = &spu_management_of_ops;
248 #endif
249
250         cbe_regs_init();
251
252         cell_set_dabrx();
253
254 #ifdef CONFIG_CBE_RAS
255         cbe_ras_init();
256 #endif
257
258 #ifdef CONFIG_SMP
259         smp_init_cell();
260 #endif
261         /* init to some ~sane value until calibrate_delay() runs */
262         loops_per_jiffy = 50000000;
263
264         /* Find and initialize PCI host bridges */
265         init_pci_config_tokens();
266
267         cbe_pervasive_init();
268 #ifdef CONFIG_DUMMY_CONSOLE
269         conswitchp = &dummy_con;
270 #endif
271
272         mmio_nvram_init();
273 }
274
275 static int __init cell_probe(void)
276 {
277         unsigned long root = of_get_flat_dt_root();
278
279         if (!of_flat_dt_is_compatible(root, "IBM,CBEA") &&
280             !of_flat_dt_is_compatible(root, "IBM,CPBW-1.0"))
281                 return 0;
282
283         hpte_init_native();
284
285         return 1;
286 }
287
288 define_machine(cell) {
289         .name                   = "Cell",
290         .probe                  = cell_probe,
291         .setup_arch             = cell_setup_arch,
292         .show_cpuinfo           = cell_show_cpuinfo,
293         .restart                = rtas_restart,
294         .power_off              = rtas_power_off,
295         .halt                   = rtas_halt,
296         .get_boot_time          = rtas_get_boot_time,
297         .get_rtc_time           = rtas_get_rtc_time,
298         .set_rtc_time           = rtas_set_rtc_time,
299         .calibrate_decr         = generic_calibrate_decr,
300         .progress               = cell_progress,
301         .init_IRQ               = cell_init_irq,
302         .pci_setup_phb          = cell_setup_phb,
303 };