Merge Linux 2.6.23
[linux-2.6] / arch / powerpc / platforms / ps3 / setup.c
1 /*
2  *  PS3 platform setup routines.
3  *
4  *  Copyright (C) 2006 Sony Computer Entertainment Inc.
5  *  Copyright 2006 Sony Corp.
6  *
7  *  This program is free software; you can redistribute it and/or modify
8  *  it under the terms of the GNU General Public License as published by
9  *  the Free Software Foundation; version 2 of the License.
10  *
11  *  This program is distributed in the hope that it will be useful,
12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14  *  GNU General Public License for more details.
15  *
16  *  You should have received a copy of the GNU General Public License
17  *  along with this program; if not, write to the Free Software
18  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
19  */
20
21 #include <linux/kernel.h>
22 #include <linux/delay.h>
23 #include <linux/fs.h>
24 #include <linux/root_dev.h>
25 #include <linux/console.h>
26 #include <linux/kexec.h>
27 #include <linux/bootmem.h>
28
29 #include <asm/machdep.h>
30 #include <asm/firmware.h>
31 #include <asm/time.h>
32 #include <asm/iommu.h>
33 #include <asm/udbg.h>
34 #include <asm/prom.h>
35 #include <asm/lv1call.h>
36
37 #include "platform.h"
38
39 #if defined(DEBUG)
40 #define DBG udbg_printf
41 #else
42 #define DBG pr_debug
43 #endif
44
45 #if !defined(CONFIG_SMP)
46 static void smp_send_stop(void) {}
47 #endif
48
49 static union ps3_firmware_version ps3_firmware_version;
50
51 void ps3_get_firmware_version(union ps3_firmware_version *v)
52 {
53         *v = ps3_firmware_version;
54 }
55 EXPORT_SYMBOL_GPL(ps3_get_firmware_version);
56
57 int ps3_compare_firmware_version(u16 major, u16 minor, u16 rev)
58 {
59         union ps3_firmware_version x;
60
61         x.pad = 0;
62         x.major = major;
63         x.minor = minor;
64         x.rev = rev;
65
66         return (ps3_firmware_version.raw > x.raw) -
67                (ps3_firmware_version.raw < x.raw);
68 }
69 EXPORT_SYMBOL_GPL(ps3_compare_firmware_version);
70
71 static void ps3_power_save(void)
72 {
73         /*
74          * lv1_pause() puts the PPE thread into inactive state until an
75          * irq on an unmasked plug exists. MSR[EE] has no effect.
76          * flags: 0 = wake on DEC interrupt, 1 = ignore DEC interrupt.
77          */
78
79         lv1_pause(0);
80 }
81
82 static void ps3_restart(char *cmd)
83 {
84         DBG("%s:%d cmd '%s'\n", __func__, __LINE__, cmd);
85
86         smp_send_stop();
87         ps3_sys_manager_restart(); /* never returns */
88 }
89
90 static void ps3_power_off(void)
91 {
92         DBG("%s:%d\n", __func__, __LINE__);
93
94         smp_send_stop();
95         ps3_sys_manager_power_off(); /* never returns */
96 }
97
98 static void ps3_panic(char *str)
99 {
100         DBG("%s:%d %s\n", __func__, __LINE__, str);
101
102         smp_send_stop();
103         printk("\n");
104         printk("   System does not reboot automatically.\n");
105         printk("   Please press POWER button.\n");
106         printk("\n");
107
108         while(1);
109 }
110
111 #if defined(CONFIG_FB_PS3) || defined(CONFIG_FB_PS3_MODULE) || \
112     defined(CONFIG_PS3_FLASH) || defined(CONFIG_PS3_FLASH_MODULE)
113 static void __init prealloc(struct ps3_prealloc *p)
114 {
115         if (!p->size)
116                 return;
117
118         p->address = __alloc_bootmem(p->size, p->align, __pa(MAX_DMA_ADDRESS));
119         if (!p->address) {
120                 printk(KERN_ERR "%s: Cannot allocate %s\n", __FUNCTION__,
121                        p->name);
122                 return;
123         }
124
125         printk(KERN_INFO "%s: %lu bytes at %p\n", p->name, p->size,
126                p->address);
127 }
128 #endif
129
130 #if defined(CONFIG_FB_PS3) || defined(CONFIG_FB_PS3_MODULE)
131 struct ps3_prealloc ps3fb_videomemory = {
132         .name = "ps3fb videomemory",
133         .size = CONFIG_FB_PS3_DEFAULT_SIZE_M*1024*1024,
134         .align = 1024*1024              /* the GPU requires 1 MiB alignment */
135 };
136 EXPORT_SYMBOL_GPL(ps3fb_videomemory);
137 #define prealloc_ps3fb_videomemory()    prealloc(&ps3fb_videomemory)
138
139 static int __init early_parse_ps3fb(char *p)
140 {
141         if (!p)
142                 return 1;
143
144         ps3fb_videomemory.size = _ALIGN_UP(memparse(p, &p),
145                                            ps3fb_videomemory.align);
146         return 0;
147 }
148 early_param("ps3fb", early_parse_ps3fb);
149 #else
150 #define prealloc_ps3fb_videomemory()    do { } while (0)
151 #endif
152
153 #if defined(CONFIG_PS3_FLASH) || defined(CONFIG_PS3_FLASH_MODULE)
154 struct ps3_prealloc ps3flash_bounce_buffer = {
155         .name = "ps3flash bounce buffer",
156         .size = 256*1024,
157         .align = 256*1024
158 };
159 EXPORT_SYMBOL_GPL(ps3flash_bounce_buffer);
160 #define prealloc_ps3flash_bounce_buffer()       prealloc(&ps3flash_bounce_buffer)
161
162 static int __init early_parse_ps3flash(char *p)
163 {
164         if (!p)
165                 return 1;
166
167         if (!strcmp(p, "off"))
168                 ps3flash_bounce_buffer.size = 0;
169
170         return 0;
171 }
172 early_param("ps3flash", early_parse_ps3flash);
173 #else
174 #define prealloc_ps3flash_bounce_buffer()       do { } while (0)
175 #endif
176
177 static int ps3_set_dabr(u64 dabr)
178 {
179         enum {DABR_USER = 1, DABR_KERNEL = 2,};
180
181         return lv1_set_dabr(dabr, DABR_KERNEL | DABR_USER) ? -1 : 0;
182 }
183
184 static void __init ps3_setup_arch(void)
185 {
186
187         DBG(" -> %s:%d\n", __func__, __LINE__);
188
189         lv1_get_version_info(&ps3_firmware_version.raw);
190         printk(KERN_INFO "PS3 firmware version %u.%u.%u\n",
191                ps3_firmware_version.major, ps3_firmware_version.minor,
192                ps3_firmware_version.rev);
193
194         ps3_spu_set_platform();
195         ps3_map_htab();
196
197 #ifdef CONFIG_SMP
198         smp_init_ps3();
199 #endif
200
201 #ifdef CONFIG_DUMMY_CONSOLE
202         conswitchp = &dummy_con;
203 #endif
204
205         prealloc_ps3fb_videomemory();
206         prealloc_ps3flash_bounce_buffer();
207
208         ppc_md.power_save = ps3_power_save;
209
210         DBG(" <- %s:%d\n", __func__, __LINE__);
211 }
212
213 static void __init ps3_progress(char *s, unsigned short hex)
214 {
215         printk("*** %04x : %s\n", hex, s ? s : "");
216 }
217
218 static int __init ps3_probe(void)
219 {
220         unsigned long htab_size;
221         unsigned long dt_root;
222
223         DBG(" -> %s:%d\n", __func__, __LINE__);
224
225         dt_root = of_get_flat_dt_root();
226         if (!of_flat_dt_is_compatible(dt_root, "sony,ps3"))
227                 return 0;
228
229         powerpc_firmware_features |= FW_FEATURE_PS3_POSSIBLE;
230
231         ps3_os_area_init();
232         ps3_mm_init();
233         ps3_mm_vas_create(&htab_size);
234         ps3_hpte_init(htab_size);
235
236         DBG(" <- %s:%d\n", __func__, __LINE__);
237         return 1;
238 }
239
240 #if defined(CONFIG_KEXEC)
241 static void ps3_kexec_cpu_down(int crash_shutdown, int secondary)
242 {
243         int cpu = smp_processor_id();
244
245         DBG(" -> %s:%d: (%d)\n", __func__, __LINE__, cpu);
246
247         ps3_smp_cleanup_cpu(cpu);
248         ps3_shutdown_IRQ(cpu);
249
250         DBG(" <- %s:%d\n", __func__, __LINE__);
251 }
252 #endif
253
254 define_machine(ps3) {
255         .name                           = "PS3",
256         .probe                          = ps3_probe,
257         .setup_arch                     = ps3_setup_arch,
258         .init_IRQ                       = ps3_init_IRQ,
259         .panic                          = ps3_panic,
260         .get_boot_time                  = ps3_get_boot_time,
261         .set_rtc_time                   = ps3_set_rtc_time,
262         .get_rtc_time                   = ps3_get_rtc_time,
263         .set_dabr                       = ps3_set_dabr,
264         .calibrate_decr                 = ps3_calibrate_decr,
265         .progress                       = ps3_progress,
266         .restart                        = ps3_restart,
267         .power_off                      = ps3_power_off,
268 #if defined(CONFIG_KEXEC)
269         .kexec_cpu_down                 = ps3_kexec_cpu_down,
270         .machine_kexec                  = default_machine_kexec,
271         .machine_kexec_prepare          = default_machine_kexec_prepare,
272         .machine_crash_shutdown         = default_machine_crash_shutdown,
273 #endif
274 };