2 * Copyright (C) 2006-2007 PA Semi, Inc
4 * Authors: Kip Walker, PA Semi
5 * Olof Johansson, PA Semi
7 * Maintained by: Olof Johansson <olof@lixom.net>
9 * Based on arch/powerpc/platforms/maple/setup.c
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License version 2 as
13 * published by the Free Software Foundation.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
25 #include <linux/errno.h>
26 #include <linux/kernel.h>
27 #include <linux/delay.h>
28 #include <linux/console.h>
29 #include <linux/pci.h>
30 #include <linux/of_platform.h>
31 #include <linux/gfp.h>
34 #include <asm/system.h>
35 #include <asm/iommu.h>
36 #include <asm/machdep.h>
42 #include <pcmcia/ss.h>
43 #include <pcmcia/cistpl.h>
44 #include <pcmcia/ds.h>
48 /* SDC reset register, must be pre-mapped at reset time */
49 static void __iomem
*reset_reg
;
51 /* Various error status registers, must be pre-mapped at MCE time */
53 #define MAX_MCE_REGS 32
59 static struct mce_regs mce_regs
[MAX_MCE_REGS
];
60 static int num_mce_regs
;
61 static int nmi_virq
= NO_IRQ
;
64 static void pas_restart(char *cmd
)
66 /* Need to put others cpu in hold loop so they're not sleeping */
69 printk("Restarting...\n");
71 out_le32(reset_reg
, 0x6000000);
75 static arch_spinlock_t timebase_lock
;
76 static unsigned long timebase
;
78 static void __devinit
pas_give_timebase(void)
82 local_irq_save(flags
);
84 arch_spin_lock(&timebase_lock
);
85 mtspr(SPRN_TBCTL
, TBCTL_FREEZE
);
88 arch_spin_unlock(&timebase_lock
);
92 mtspr(SPRN_TBCTL
, TBCTL_RESTART
);
93 local_irq_restore(flags
);
96 static void __devinit
pas_take_timebase(void)
101 arch_spin_lock(&timebase_lock
);
102 set_tb(timebase
>> 32, timebase
& 0xffffffff);
104 arch_spin_unlock(&timebase_lock
);
107 struct smp_ops_t pas_smp_ops
= {
108 .probe
= smp_mpic_probe
,
109 .message_pass
= smp_mpic_message_pass
,
110 .kick_cpu
= smp_generic_kick_cpu
,
111 .setup_cpu
= smp_mpic_setup_cpu
,
112 .give_timebase
= pas_give_timebase
,
113 .take_timebase
= pas_take_timebase
,
115 #endif /* CONFIG_SMP */
117 void __init
pas_setup_arch(void)
120 /* Setup SMP callback */
121 smp_ops
= &pas_smp_ops
;
123 /* Lookup PCI hosts */
126 #ifdef CONFIG_DUMMY_CONSOLE
127 conswitchp
= &dummy_con
;
130 /* Remap SDC register for doing reset */
131 /* XXXOJN This should maybe come out of the device tree */
132 reset_reg
= ioremap(0xfc101100, 4);
135 static int __init
pas_setup_mce_regs(void)
140 /* Remap various SoC status registers for use by the MCE handler */
144 dev
= pci_get_device(PCI_VENDOR_ID_PASEMI
, 0xa00a, NULL
);
145 while (dev
&& reg
< MAX_MCE_REGS
) {
146 mce_regs
[reg
].name
= kasprintf(GFP_KERNEL
,
147 "mc%d_mcdebug_errsta", reg
);
148 mce_regs
[reg
].addr
= pasemi_pci_getcfgaddr(dev
, 0x730);
149 dev
= pci_get_device(PCI_VENDOR_ID_PASEMI
, 0xa00a, dev
);
153 dev
= pci_get_device(PCI_VENDOR_ID_PASEMI
, 0xa001, NULL
);
154 if (dev
&& reg
+4 < MAX_MCE_REGS
) {
155 mce_regs
[reg
].name
= "iobdbg_IntStatus1";
156 mce_regs
[reg
].addr
= pasemi_pci_getcfgaddr(dev
, 0x438);
158 mce_regs
[reg
].name
= "iobdbg_IOCTbusIntDbgReg";
159 mce_regs
[reg
].addr
= pasemi_pci_getcfgaddr(dev
, 0x454);
161 mce_regs
[reg
].name
= "iobiom_IntStatus";
162 mce_regs
[reg
].addr
= pasemi_pci_getcfgaddr(dev
, 0xc10);
164 mce_regs
[reg
].name
= "iobiom_IntDbgReg";
165 mce_regs
[reg
].addr
= pasemi_pci_getcfgaddr(dev
, 0xc1c);
169 dev
= pci_get_device(PCI_VENDOR_ID_PASEMI
, 0xa009, NULL
);
170 if (dev
&& reg
+2 < MAX_MCE_REGS
) {
171 mce_regs
[reg
].name
= "l2csts_IntStatus";
172 mce_regs
[reg
].addr
= pasemi_pci_getcfgaddr(dev
, 0x200);
174 mce_regs
[reg
].name
= "l2csts_Cnt";
175 mce_regs
[reg
].addr
= pasemi_pci_getcfgaddr(dev
, 0x214);
183 machine_device_initcall(pasemi
, pas_setup_mce_regs
);
185 static __init
void pas_init_IRQ(void)
187 struct device_node
*np
;
188 struct device_node
*root
, *mpic_node
;
189 unsigned long openpic_addr
;
190 const unsigned int *opprop
;
193 const unsigned int *nmiprop
;
198 for_each_node_by_type(np
, "interrupt-controller")
199 if (of_device_is_compatible(np
, "open-pic")) {
204 for_each_node_by_type(np
, "open-pic") {
210 "Failed to locate the MPIC interrupt controller\n");
214 /* Find address list in /platform-open-pic */
215 root
= of_find_node_by_path("/");
216 naddr
= of_n_addr_cells(root
);
217 opprop
= of_get_property(root
, "platform-open-pic", &opplen
);
219 printk(KERN_ERR
"No platform-open-pic property.\n");
223 openpic_addr
= of_read_number(opprop
, naddr
);
224 printk(KERN_DEBUG
"OpenPIC addr: %lx\n", openpic_addr
);
226 mpic_flags
= MPIC_PRIMARY
| MPIC_LARGE_VECTORS
| MPIC_NO_BIAS
;
228 nmiprop
= of_get_property(mpic_node
, "nmi-source", NULL
);
230 mpic_flags
|= MPIC_ENABLE_MCK
;
232 mpic
= mpic_alloc(mpic_node
, openpic_addr
,
233 mpic_flags
, 0, 0, "PASEMI-OPIC");
236 mpic_assign_isu(mpic
, 0, openpic_addr
+ 0x10000);
238 /* The NMI/MCK source needs to be prio 15 */
240 nmi_virq
= irq_create_mapping(NULL
, *nmiprop
);
241 mpic_irq_set_priority(nmi_virq
, 15);
242 irq_set_irq_type(nmi_virq
, IRQ_TYPE_EDGE_RISING
);
243 mpic_unmask_irq(irq_get_irq_data(nmi_virq
));
246 of_node_put(mpic_node
);
250 static void __init
pas_progress(char *s
, unsigned short hex
)
252 printk("[%04x] : %s\n", hex
, s
? s
: "");
256 static int pas_machine_check_handler(struct pt_regs
*regs
)
258 int cpu
= smp_processor_id();
259 unsigned long srr0
, srr1
, dsisr
;
266 if (nmi_virq
!= NO_IRQ
&& mpic_get_mcirq() == nmi_virq
) {
267 printk(KERN_ERR
"NMI delivered\n");
269 mpic_end_irq(irq_get_irq_data(nmi_virq
));
273 dsisr
= mfspr(SPRN_DSISR
);
274 printk(KERN_ERR
"Machine Check on CPU %d\n", cpu
);
275 printk(KERN_ERR
"SRR0 0x%016lx SRR1 0x%016lx\n", srr0
, srr1
);
276 printk(KERN_ERR
"DSISR 0x%016lx DAR 0x%016lx\n", dsisr
, regs
->dar
);
277 printk(KERN_ERR
"BER 0x%016lx MER 0x%016lx\n", mfspr(SPRN_PA6T_BER
),
278 mfspr(SPRN_PA6T_MER
));
279 printk(KERN_ERR
"IER 0x%016lx DER 0x%016lx\n", mfspr(SPRN_PA6T_IER
),
280 mfspr(SPRN_PA6T_DER
));
281 printk(KERN_ERR
"Cause:\n");
284 printk(KERN_ERR
"Signalled by SDC\n");
286 if (srr1
& 0x100000) {
287 printk(KERN_ERR
"Load/Store detected error:\n");
289 printk(KERN_ERR
"D-cache ECC double-bit error or bus error\n");
291 printk(KERN_ERR
"LSU snoop response error\n");
292 if (dsisr
& 0x2000) {
293 printk(KERN_ERR
"MMU SLB multi-hit or invalid B field\n");
297 printk(KERN_ERR
"Recoverable Duptags\n");
299 printk(KERN_ERR
"Recoverable D-cache parity error count overflow\n");
301 printk(KERN_ERR
"TLB parity error count overflow\n");
305 printk(KERN_ERR
"Bus Error\n");
307 if (srr1
& 0x40000) {
308 printk(KERN_ERR
"I-side SLB multiple hit\n");
313 printk(KERN_ERR
"I-cache parity error hit\n");
315 if (num_mce_regs
== 0)
316 printk(KERN_ERR
"No MCE registers mapped yet, can't dump\n");
318 printk(KERN_ERR
"SoC debug registers:\n");
320 for (i
= 0; i
< num_mce_regs
; i
++)
321 printk(KERN_ERR
"%s: 0x%08x\n", mce_regs
[i
].name
,
322 in_le32(mce_regs
[i
].addr
));
328 printk(KERN_ERR
"slb contents:\n");
329 for (i
= 0; i
< mmu_slb_size
; i
++) {
330 asm volatile("slbmfee %0,%1" : "=r" (e
) : "r" (i
));
331 asm volatile("slbmfev %0,%1" : "=r" (v
) : "r" (i
));
332 printk(KERN_ERR
"%02d %016lx %016lx\n", i
, e
, v
);
337 /* SRR1[62] is from MSR[62] if recoverable, so pass that back */
338 return !!(srr1
& 0x2);
341 static void __init
pas_init_early(void)
343 iommu_init_early_pasemi();
347 static int pcmcia_notify(struct notifier_block
*nb
, unsigned long action
,
350 struct device
*dev
= data
;
351 struct device
*parent
;
352 struct pcmcia_device
*pdev
= to_pcmcia_dev(dev
);
354 /* We are only intereted in device addition */
355 if (action
!= BUS_NOTIFY_ADD_DEVICE
)
358 parent
= pdev
->socket
->dev
.parent
;
360 /* We know electra_cf devices will always have of_node set, since
361 * electra_cf is an of_platform driver.
363 if (!parent
->of_node
)
366 if (!of_device_is_compatible(parent
->of_node
, "electra-cf"))
369 /* We use the direct ops for localbus */
370 dev
->archdata
.dma_ops
= &dma_direct_ops
;
375 static struct notifier_block pcmcia_notifier
= {
376 .notifier_call
= pcmcia_notify
,
379 static inline void pasemi_pcmcia_init(void)
381 extern struct bus_type pcmcia_bus_type
;
383 bus_register_notifier(&pcmcia_bus_type
, &pcmcia_notifier
);
388 static inline void pasemi_pcmcia_init(void)
395 static struct of_device_id pasemi_bus_ids
[] = {
396 /* Unfortunately needed for legacy firmwares */
397 { .type
= "localbus", },
399 /* These are the proper entries, which newer firmware uses */
400 { .compatible
= "pasemi,localbus", },
401 { .compatible
= "pasemi,sdc", },
405 static int __init
pasemi_publish_devices(void)
407 pasemi_pcmcia_init();
409 /* Publish OF platform devices for SDC and other non-PCI devices */
410 of_platform_bus_probe(NULL
, pasemi_bus_ids
, NULL
);
414 machine_device_initcall(pasemi
, pasemi_publish_devices
);
418 * Called very early, MMU is off, device-tree isn't unflattened
420 static int __init
pas_probe(void)
422 unsigned long root
= of_get_flat_dt_root();
424 if (!of_flat_dt_is_compatible(root
, "PA6T-1682M") &&
425 !of_flat_dt_is_compatible(root
, "pasemi,pwrficient"))
435 define_machine(pasemi
) {
436 .name
= "PA Semi PWRficient",
438 .setup_arch
= pas_setup_arch
,
439 .init_early
= pas_init_early
,
440 .init_IRQ
= pas_init_IRQ
,
441 .get_irq
= mpic_get_irq
,
442 .restart
= pas_restart
,
443 .get_boot_time
= pas_get_boot_time
,
444 .calibrate_decr
= generic_calibrate_decr
,
445 .progress
= pas_progress
,
446 .machine_check_exception
= pas_machine_check_handler
,