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1c0c13eb AJ |
1 | /* |
2 | * Copyright (C) 2004 Florian Schirmer <jolt@tuxbox.org> | |
1c0c13eb | 3 | * Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org> |
eb032b98 | 4 | * Copyright (C) 2006 Michael Buesch <m@bues.ch> |
121915c4 | 5 | * Copyright (C) 2010 Waldemar Brodkorb <wbx@openadk.org> |
f384b3dd | 6 | * Copyright (C) 2010-2012 Hauke Mehrtens <hauke@hauke-m.de> |
1c0c13eb AJ |
7 | * |
8 | * This program is free software; you can redistribute it and/or modify it | |
9 | * under the terms of the GNU General Public License as published by the | |
10 | * Free Software Foundation; either version 2 of the License, or (at your | |
11 | * option) any later version. | |
12 | * | |
13 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
14 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
15 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN | |
16 | * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, | |
17 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
18 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF | |
19 | * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON | |
20 | * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
21 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | |
22 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
23 | * | |
24 | * You should have received a copy of the GNU General Public License along | |
25 | * with this program; if not, write to the Free Software Foundation, Inc., | |
26 | * 675 Mass Ave, Cambridge, MA 02139, USA. | |
27 | */ | |
28 | ||
515fa75d RM |
29 | #include "bcm47xx_private.h" |
30 | ||
cae39d13 | 31 | #include <linux/export.h> |
1c0c13eb | 32 | #include <linux/types.h> |
b04138b3 HM |
33 | #include <linux/ethtool.h> |
34 | #include <linux/phy.h> | |
35 | #include <linux/phy_fixed.h> | |
1c0c13eb | 36 | #include <linux/ssb/ssb.h> |
b06f3e19 | 37 | #include <linux/ssb/ssb_embedded.h> |
c1d1c5d4 | 38 | #include <linux/bcma/bcma_soc.h> |
25e5fb97 | 39 | #include <asm/bootinfo.h> |
76b573e4 | 40 | #include <asm/idle.h> |
7da4b6f8 | 41 | #include <asm/prom.h> |
1c0c13eb AJ |
42 | #include <asm/reboot.h> |
43 | #include <asm/time.h> | |
44 | #include <bcm47xx.h> | |
111bd981 | 45 | #include <bcm47xx_nvram.h> |
786c497a | 46 | #include <bcm47xx_board.h> |
1c0c13eb | 47 | |
08ccf572 HM |
48 | union bcm47xx_bus bcm47xx_bus; |
49 | EXPORT_SYMBOL(bcm47xx_bus); | |
50 | ||
51 | enum bcm47xx_bus_type bcm47xx_bus_type; | |
52 | EXPORT_SYMBOL(bcm47xx_bus_type); | |
1c0c13eb AJ |
53 | |
54 | static void bcm47xx_machine_restart(char *command) | |
55 | { | |
56 | printk(KERN_ALERT "Please stand by while rebooting the system...\n"); | |
57 | local_irq_disable(); | |
58 | /* Set the watchdog timer to reset immediately */ | |
08ccf572 | 59 | switch (bcm47xx_bus_type) { |
a656ffcb | 60 | #ifdef CONFIG_BCM47XX_SSB |
08ccf572 HM |
61 | case BCM47XX_BUS_TYPE_SSB: |
62 | ssb_watchdog_timer_set(&bcm47xx_bus.ssb, 1); | |
63 | break; | |
c1d1c5d4 HM |
64 | #endif |
65 | #ifdef CONFIG_BCM47XX_BCMA | |
66 | case BCM47XX_BUS_TYPE_BCMA: | |
67 | bcma_chipco_watchdog_timer_set(&bcm47xx_bus.bcma.bus.drv_cc, 1); | |
68 | break; | |
a656ffcb | 69 | #endif |
08ccf572 | 70 | } |
1c0c13eb AJ |
71 | while (1) |
72 | cpu_relax(); | |
73 | } | |
74 | ||
75 | static void bcm47xx_machine_halt(void) | |
76 | { | |
77 | /* Disable interrupts and watchdog and spin forever */ | |
78 | local_irq_disable(); | |
08ccf572 | 79 | switch (bcm47xx_bus_type) { |
a656ffcb | 80 | #ifdef CONFIG_BCM47XX_SSB |
08ccf572 HM |
81 | case BCM47XX_BUS_TYPE_SSB: |
82 | ssb_watchdog_timer_set(&bcm47xx_bus.ssb, 0); | |
83 | break; | |
c1d1c5d4 HM |
84 | #endif |
85 | #ifdef CONFIG_BCM47XX_BCMA | |
86 | case BCM47XX_BUS_TYPE_BCMA: | |
87 | bcma_chipco_watchdog_timer_set(&bcm47xx_bus.bcma.bus.drv_cc, 0); | |
88 | break; | |
a656ffcb | 89 | #endif |
08ccf572 | 90 | } |
1c0c13eb AJ |
91 | while (1) |
92 | cpu_relax(); | |
93 | } | |
94 | ||
a656ffcb | 95 | #ifdef CONFIG_BCM47XX_SSB |
f384b3dd | 96 | static int bcm47xx_get_sprom_ssb(struct ssb_bus *bus, struct ssb_sprom *out) |
fe6f3642 HM |
97 | { |
98 | char prefix[10]; | |
99 | ||
100 | if (bus->bustype == SSB_BUSTYPE_PCI) { | |
5fe2e071 | 101 | memset(out, 0, sizeof(struct ssb_sprom)); |
fe6f3642 HM |
102 | snprintf(prefix, sizeof(prefix), "pci/%u/%u/", |
103 | bus->host_pci->bus->number + 1, | |
104 | PCI_SLOT(bus->host_pci->devfn)); | |
b8ebbaff | 105 | bcm47xx_fill_sprom(out, prefix, false); |
fe6f3642 HM |
106 | return 0; |
107 | } else { | |
108 | printk(KERN_WARNING "bcm47xx: unable to fill SPROM for given bustype.\n"); | |
109 | return -EINVAL; | |
110 | } | |
111 | } | |
112 | ||
1c0c13eb | 113 | static int bcm47xx_get_invariants(struct ssb_bus *bus, |
f384b3dd | 114 | struct ssb_init_invariants *iv) |
1c0c13eb | 115 | { |
2aa088d6 | 116 | char buf[20]; |
25e5fb97 AJ |
117 | |
118 | /* Fill boardinfo structure */ | |
119 | memset(&(iv->boardinfo), 0 , sizeof(struct ssb_boardinfo)); | |
120 | ||
a9bba182 | 121 | bcm47xx_fill_ssb_boardinfo(&iv->boardinfo, NULL); |
25e5fb97 | 122 | |
5fe2e071 | 123 | memset(&iv->sprom, 0, sizeof(struct ssb_sprom)); |
b8ebbaff | 124 | bcm47xx_fill_sprom(&iv->sprom, NULL, false); |
121915c4 | 125 | |
111bd981 | 126 | if (bcm47xx_nvram_getenv("cardbus", buf, sizeof(buf)) >= 0) |
2aa088d6 | 127 | iv->has_cardbus_slot = !!simple_strtoul(buf, NULL, 10); |
25e5fb97 | 128 | |
1c0c13eb AJ |
129 | return 0; |
130 | } | |
131 | ||
08ccf572 | 132 | static void __init bcm47xx_register_ssb(void) |
1c0c13eb AJ |
133 | { |
134 | int err; | |
1690a7f9 HM |
135 | char buf[100]; |
136 | struct ssb_mipscore *mcore; | |
1c0c13eb | 137 | |
f384b3dd | 138 | err = ssb_arch_register_fallback_sprom(&bcm47xx_get_sprom_ssb); |
fe6f3642 HM |
139 | if (err) |
140 | printk(KERN_WARNING "bcm47xx: someone else already registered" | |
141 | " a ssb SPROM callback handler (err %d)\n", err); | |
142 | ||
08ccf572 | 143 | err = ssb_bus_ssbbus_register(&(bcm47xx_bus.ssb), SSB_ENUM_BASE, |
1c0c13eb AJ |
144 | bcm47xx_get_invariants); |
145 | if (err) | |
ab75dc02 | 146 | panic("Failed to initialize SSB bus (err %d)", err); |
1c0c13eb | 147 | |
08ccf572 | 148 | mcore = &bcm47xx_bus.ssb.mipscore; |
111bd981 | 149 | if (bcm47xx_nvram_getenv("kernel_args", buf, sizeof(buf)) >= 0) { |
1690a7f9 HM |
150 | if (strstr(buf, "console=ttyS1")) { |
151 | struct ssb_serial_port port; | |
152 | ||
153 | printk(KERN_DEBUG "Swapping serial ports!\n"); | |
154 | /* swap serial ports */ | |
155 | memcpy(&port, &mcore->serial_ports[0], sizeof(port)); | |
156 | memcpy(&mcore->serial_ports[0], &mcore->serial_ports[1], | |
157 | sizeof(port)); | |
158 | memcpy(&mcore->serial_ports[1], &port, sizeof(port)); | |
159 | } | |
160 | } | |
08ccf572 | 161 | } |
a656ffcb | 162 | #endif |
08ccf572 | 163 | |
c1d1c5d4 | 164 | #ifdef CONFIG_BCM47XX_BCMA |
f384b3dd HM |
165 | static int bcm47xx_get_sprom_bcma(struct bcma_bus *bus, struct ssb_sprom *out) |
166 | { | |
167 | char prefix[10]; | |
168 | struct bcma_device *core; | |
169 | ||
170 | switch (bus->hosttype) { | |
171 | case BCMA_HOSTTYPE_PCI: | |
5fe2e071 | 172 | memset(out, 0, sizeof(struct ssb_sprom)); |
f384b3dd HM |
173 | snprintf(prefix, sizeof(prefix), "pci/%u/%u/", |
174 | bus->host_pci->bus->number + 1, | |
175 | PCI_SLOT(bus->host_pci->devfn)); | |
b8ebbaff | 176 | bcm47xx_fill_sprom(out, prefix, false); |
f384b3dd HM |
177 | return 0; |
178 | case BCMA_HOSTTYPE_SOC: | |
5fe2e071 | 179 | memset(out, 0, sizeof(struct ssb_sprom)); |
f384b3dd HM |
180 | core = bcma_find_core(bus, BCMA_CORE_80211); |
181 | if (core) { | |
182 | snprintf(prefix, sizeof(prefix), "sb/%u/", | |
183 | core->core_index); | |
b8ebbaff | 184 | bcm47xx_fill_sprom(out, prefix, true); |
2c376311 | 185 | } else { |
b8ebbaff | 186 | bcm47xx_fill_sprom(out, NULL, false); |
f384b3dd HM |
187 | } |
188 | return 0; | |
189 | default: | |
190 | pr_warn("bcm47xx: unable to fill SPROM for given bustype.\n"); | |
191 | return -EINVAL; | |
192 | } | |
193 | } | |
194 | ||
c1d1c5d4 HM |
195 | static void __init bcm47xx_register_bcma(void) |
196 | { | |
197 | int err; | |
198 | ||
f384b3dd HM |
199 | err = bcma_arch_register_fallback_sprom(&bcm47xx_get_sprom_bcma); |
200 | if (err) | |
201 | pr_warn("bcm47xx: someone else already registered a bcma SPROM callback handler (err %d)\n", err); | |
202 | ||
c1d1c5d4 HM |
203 | err = bcma_host_soc_register(&bcm47xx_bus.bcma); |
204 | if (err) | |
ab75dc02 | 205 | panic("Failed to initialize BCMA bus (err %d)", err); |
0a2fcaa7 HM |
206 | |
207 | bcm47xx_fill_bcma_boardinfo(&bcm47xx_bus.bcma.bus.boardinfo, NULL); | |
c1d1c5d4 HM |
208 | } |
209 | #endif | |
210 | ||
08ccf572 HM |
211 | void __init plat_mem_setup(void) |
212 | { | |
213 | struct cpuinfo_mips *c = ¤t_cpu_data; | |
214 | ||
442e14a2 | 215 | if ((c->cputype == CPU_74K) || (c->cputype == CPU_1074K)) { |
c1d1c5d4 HM |
216 | printk(KERN_INFO "bcm47xx: using bcma bus\n"); |
217 | #ifdef CONFIG_BCM47XX_BCMA | |
218 | bcm47xx_bus_type = BCM47XX_BUS_TYPE_BCMA; | |
219 | bcm47xx_register_bcma(); | |
dd573285 | 220 | bcm47xx_set_system_type(bcm47xx_bus.bcma.bus.chipinfo.id); |
c1d1c5d4 HM |
221 | #endif |
222 | } else { | |
223 | printk(KERN_INFO "bcm47xx: using ssb bus\n"); | |
a656ffcb | 224 | #ifdef CONFIG_BCM47XX_SSB |
c1d1c5d4 HM |
225 | bcm47xx_bus_type = BCM47XX_BUS_TYPE_SSB; |
226 | bcm47xx_register_ssb(); | |
dd573285 | 227 | bcm47xx_set_system_type(bcm47xx_bus.ssb.chip_id); |
a656ffcb | 228 | #endif |
c1d1c5d4 | 229 | } |
1690a7f9 | 230 | |
1c0c13eb AJ |
231 | _machine_restart = bcm47xx_machine_restart; |
232 | _machine_halt = bcm47xx_machine_halt; | |
233 | pm_power_off = bcm47xx_machine_halt; | |
786c497a | 234 | bcm47xx_board_detect(); |
7da4b6f8 | 235 | mips_set_machine_name(bcm47xx_board_get_name()); |
1c0c13eb | 236 | } |
c1d1c5d4 | 237 | |
3c06b12b HM |
238 | static int __init bcm47xx_cpu_fixes(void) |
239 | { | |
240 | switch (bcm47xx_bus_type) { | |
241 | #ifdef CONFIG_BCM47XX_SSB | |
242 | case BCM47XX_BUS_TYPE_SSB: | |
243 | /* Nothing to do */ | |
244 | break; | |
245 | #endif | |
246 | #ifdef CONFIG_BCM47XX_BCMA | |
247 | case BCM47XX_BUS_TYPE_BCMA: | |
248 | /* The BCM4706 has a problem with the CPU wait instruction. | |
249 | * When r4k_wait or r4k_wait_irqoff is used will just hang and | |
250 | * not return from a msleep(). Removing the cpu_wait | |
251 | * functionality is a workaround for this problem. The BCM4716 | |
252 | * does not have this problem. | |
253 | */ | |
254 | if (bcm47xx_bus.bcma.bus.chipinfo.id == BCMA_CHIP_ID_BCM4706) | |
255 | cpu_wait = NULL; | |
256 | break; | |
257 | #endif | |
258 | } | |
259 | return 0; | |
260 | } | |
261 | arch_initcall(bcm47xx_cpu_fixes); | |
262 | ||
b04138b3 HM |
263 | static struct fixed_phy_status bcm47xx_fixed_phy_status __initdata = { |
264 | .link = 1, | |
265 | .speed = SPEED_100, | |
266 | .duplex = DUPLEX_FULL, | |
267 | }; | |
268 | ||
c1d1c5d4 HM |
269 | static int __init bcm47xx_register_bus_complete(void) |
270 | { | |
271 | switch (bcm47xx_bus_type) { | |
272 | #ifdef CONFIG_BCM47XX_SSB | |
273 | case BCM47XX_BUS_TYPE_SSB: | |
274 | /* Nothing to do */ | |
275 | break; | |
276 | #endif | |
277 | #ifdef CONFIG_BCM47XX_BCMA | |
278 | case BCM47XX_BUS_TYPE_BCMA: | |
279 | bcma_bus_register(&bcm47xx_bus.bcma.bus); | |
280 | break; | |
281 | #endif | |
282 | } | |
ef1e3e7a | 283 | bcm47xx_buttons_register(); |
515fa75d | 284 | bcm47xx_leds_register(); |
a2bec078 | 285 | bcm47xx_workarounds(); |
515fa75d | 286 | |
b04138b3 | 287 | fixed_phy_add(PHY_POLL, 0, &bcm47xx_fixed_phy_status); |
c1d1c5d4 HM |
288 | return 0; |
289 | } | |
290 | device_initcall(bcm47xx_register_bus_complete); |