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-rw-r--r--arch/powerpc/platforms/powermac/Kconfig11
-rw-r--r--arch/powerpc/platforms/powermac/pic.c67
-rw-r--r--arch/powerpc/platforms/powermac/pic.h11
-rw-r--r--arch/powerpc/platforms/powermac/pmac.h1
-rw-r--r--arch/powerpc/platforms/powermac/smp.c105
5 files changed, 93 insertions, 102 deletions
diff --git a/arch/powerpc/platforms/powermac/Kconfig b/arch/powerpc/platforms/powermac/Kconfig
index 1e1a0873e1dd..1afd10f67858 100644
--- a/arch/powerpc/platforms/powermac/Kconfig
+++ b/arch/powerpc/platforms/powermac/Kconfig
@@ -18,4 +18,13 @@ config PPC_PMAC64
select PPC_970_NAP
default y
-
+config PPC_PMAC32_PSURGE
+ bool "Support for powersurge upgrade cards" if EXPERT
+ depends on SMP && PPC32 && PPC_PMAC
+ select PPC_SMP_MUXED_IPI
+ default y
+ help
+ The powersurge cpu boards can be used in the generation
+ of powermacs that have a socket for an upgradeable cpu card,
+ including the 7500, 8500, 9500, 9600. Support exists for
+ both dual and quad socket upgrade cards.
diff --git a/arch/powerpc/platforms/powermac/pic.c b/arch/powerpc/platforms/powermac/pic.c
index 023f24086a0a..9089b0421191 100644
--- a/arch/powerpc/platforms/powermac/pic.c
+++ b/arch/powerpc/platforms/powermac/pic.c
@@ -21,7 +21,7 @@
#include <linux/signal.h>
#include <linux/pci.h>
#include <linux/interrupt.h>
-#include <linux/sysdev.h>
+#include <linux/syscore_ops.h>
#include <linux/adb.h>
#include <linux/pmu.h>
#include <linux/module.h>
@@ -84,7 +84,7 @@ static void __pmac_retrigger(unsigned int irq_nr)
static void pmac_mask_and_ack_irq(struct irq_data *d)
{
- unsigned int src = irq_map[d->irq].hwirq;
+ unsigned int src = irqd_to_hwirq(d);
unsigned long bit = 1UL << (src & 0x1f);
int i = src >> 5;
unsigned long flags;
@@ -106,7 +106,7 @@ static void pmac_mask_and_ack_irq(struct irq_data *d)
static void pmac_ack_irq(struct irq_data *d)
{
- unsigned int src = irq_map[d->irq].hwirq;
+ unsigned int src = irqd_to_hwirq(d);
unsigned long bit = 1UL << (src & 0x1f);
int i = src >> 5;
unsigned long flags;
@@ -152,7 +152,7 @@ static void __pmac_set_irq_mask(unsigned int irq_nr, int nokicklost)
static unsigned int pmac_startup_irq(struct irq_data *d)
{
unsigned long flags;
- unsigned int src = irq_map[d->irq].hwirq;
+ unsigned int src = irqd_to_hwirq(d);
unsigned long bit = 1UL << (src & 0x1f);
int i = src >> 5;
@@ -169,7 +169,7 @@ static unsigned int pmac_startup_irq(struct irq_data *d)
static void pmac_mask_irq(struct irq_data *d)
{
unsigned long flags;
- unsigned int src = irq_map[d->irq].hwirq;
+ unsigned int src = irqd_to_hwirq(d);
raw_spin_lock_irqsave(&pmac_pic_lock, flags);
__clear_bit(src, ppc_cached_irq_mask);
@@ -180,7 +180,7 @@ static void pmac_mask_irq(struct irq_data *d)
static void pmac_unmask_irq(struct irq_data *d)
{
unsigned long flags;
- unsigned int src = irq_map[d->irq].hwirq;
+ unsigned int src = irqd_to_hwirq(d);
raw_spin_lock_irqsave(&pmac_pic_lock, flags);
__set_bit(src, ppc_cached_irq_mask);
@@ -193,7 +193,7 @@ static int pmac_retrigger(struct irq_data *d)
unsigned long flags;
raw_spin_lock_irqsave(&pmac_pic_lock, flags);
- __pmac_retrigger(irq_map[d->irq].hwirq);
+ __pmac_retrigger(irqd_to_hwirq(d));
raw_spin_unlock_irqrestore(&pmac_pic_lock, flags);
return 1;
}
@@ -239,15 +239,12 @@ static unsigned int pmac_pic_get_irq(void)
unsigned long bits = 0;
unsigned long flags;
-#ifdef CONFIG_SMP
- void psurge_smp_message_recv(void);
-
- /* IPI's are a hack on the powersurge -- Cort */
- if ( smp_processor_id() != 0 ) {
- psurge_smp_message_recv();
- return NO_IRQ_IGNORE; /* ignore, already handled */
+#ifdef CONFIG_PPC_PMAC32_PSURGE
+ /* IPI's are a hack on the powersurge -- Cort */
+ if (smp_processor_id() != 0) {
+ return psurge_secondary_virq;
}
-#endif /* CONFIG_SMP */
+#endif /* CONFIG_PPC_PMAC32_PSURGE */
raw_spin_lock_irqsave(&pmac_pic_lock, flags);
for (irq = max_real_irqs; (irq -= 32) >= 0; ) {
int i = irq >> 5;
@@ -677,7 +674,7 @@ not_found:
return viaint;
}
-static int pmacpic_suspend(struct sys_device *sysdev, pm_message_t state)
+static int pmacpic_suspend(void)
{
int viaint = pmacpic_find_viaint();
@@ -698,7 +695,7 @@ static int pmacpic_suspend(struct sys_device *sysdev, pm_message_t state)
return 0;
}
-static int pmacpic_resume(struct sys_device *sysdev)
+static void pmacpic_resume(void)
{
int i;
@@ -709,39 +706,19 @@ static int pmacpic_resume(struct sys_device *sysdev)
for (i = 0; i < max_real_irqs; ++i)
if (test_bit(i, sleep_save_mask))
pmac_unmask_irq(irq_get_irq_data(i));
-
- return 0;
}
-#endif /* CONFIG_PM && CONFIG_PPC32 */
-
-static struct sysdev_class pmacpic_sysclass = {
- .name = "pmac_pic",
-};
-
-static struct sys_device device_pmacpic = {
- .id = 0,
- .cls = &pmacpic_sysclass,
-};
-
-static struct sysdev_driver driver_pmacpic = {
-#if defined(CONFIG_PM) && defined(CONFIG_PPC32)
- .suspend = &pmacpic_suspend,
- .resume = &pmacpic_resume,
-#endif /* CONFIG_PM && CONFIG_PPC32 */
+static struct syscore_ops pmacpic_syscore_ops = {
+ .suspend = pmacpic_suspend,
+ .resume = pmacpic_resume,
};
-static int __init init_pmacpic_sysfs(void)
+static int __init init_pmacpic_syscore(void)
{
-#ifdef CONFIG_PPC32
- if (max_irqs == 0)
- return -ENODEV;
-#endif
- printk(KERN_DEBUG "Registering pmac pic with sysfs...\n");
- sysdev_class_register(&pmacpic_sysclass);
- sysdev_register(&device_pmacpic);
- sysdev_driver_register(&pmacpic_sysclass, &driver_pmacpic);
+ register_syscore_ops(&pmacpic_syscore_ops);
return 0;
}
-machine_subsys_initcall(powermac, init_pmacpic_sysfs);
+machine_subsys_initcall(powermac, init_pmacpic_syscore);
+
+#endif /* CONFIG_PM && CONFIG_PPC32 */
diff --git a/arch/powerpc/platforms/powermac/pic.h b/arch/powerpc/platforms/powermac/pic.h
deleted file mode 100644
index d622a8345aaa..000000000000
--- a/arch/powerpc/platforms/powermac/pic.h
+++ /dev/null
@@ -1,11 +0,0 @@
-#ifndef __PPC_PLATFORMS_PMAC_PIC_H
-#define __PPC_PLATFORMS_PMAC_PIC_H
-
-#include <linux/irq.h>
-
-extern struct irq_chip pmac_pic;
-
-extern void pmac_pic_init(void);
-extern int pmac_get_irq(void);
-
-#endif /* __PPC_PLATFORMS_PMAC_PIC_H */
diff --git a/arch/powerpc/platforms/powermac/pmac.h b/arch/powerpc/platforms/powermac/pmac.h
index 20468f49aec0..8327cce2bdb0 100644
--- a/arch/powerpc/platforms/powermac/pmac.h
+++ b/arch/powerpc/platforms/powermac/pmac.h
@@ -33,6 +33,7 @@ extern void pmac_setup_pci_dma(void);
extern void pmac_check_ht_link(void);
extern void pmac_setup_smp(void);
+extern int psurge_secondary_virq;
extern void low_cpu_die(void) __attribute__((noreturn));
extern int pmac_nvram_init(void);
diff --git a/arch/powerpc/platforms/powermac/smp.c b/arch/powerpc/platforms/powermac/smp.c
index a830c5e80657..db092d7c4c5b 100644
--- a/arch/powerpc/platforms/powermac/smp.c
+++ b/arch/powerpc/platforms/powermac/smp.c
@@ -70,7 +70,7 @@ static void (*pmac_tb_freeze)(int freeze);
static u64 timebase;
static int tb_req;
-#ifdef CONFIG_PPC32
+#ifdef CONFIG_PPC_PMAC32_PSURGE
/*
* Powersurge (old powermac SMP) support.
@@ -124,6 +124,10 @@ static volatile u32 __iomem *psurge_start;
/* what sort of powersurge board we have */
static int psurge_type = PSURGE_NONE;
+/* irq for secondary cpus to report */
+static struct irq_host *psurge_host;
+int psurge_secondary_virq;
+
/*
* Set and clear IPIs for powersurge.
*/
@@ -156,51 +160,52 @@ static inline void psurge_clr_ipi(int cpu)
/*
* On powersurge (old SMP powermac architecture) we don't have
* separate IPIs for separate messages like openpic does. Instead
- * we have a bitmap for each processor, where a 1 bit means that
- * the corresponding message is pending for that processor.
- * Ideally each cpu's entry would be in a different cache line.
+ * use the generic demux helpers
* -- paulus.
*/
-static unsigned long psurge_smp_message[NR_CPUS];
-
-void psurge_smp_message_recv(void)
+static irqreturn_t psurge_ipi_intr(int irq, void *d)
{
- int cpu = smp_processor_id();
- int msg;
-
- /* clear interrupt */
- psurge_clr_ipi(cpu);
+ psurge_clr_ipi(smp_processor_id());
+ smp_ipi_demux();
- if (num_online_cpus() < 2)
- return;
+ return IRQ_HANDLED;
+}
- /* make sure there is a message there */
- for (msg = 0; msg < 4; msg++)
- if (test_and_clear_bit(msg, &psurge_smp_message[cpu]))
- smp_message_recv(msg);
+static void smp_psurge_cause_ipi(int cpu, unsigned long data)
+{
+ psurge_set_ipi(cpu);
}
-irqreturn_t psurge_primary_intr(int irq, void *d)
+static int psurge_host_map(struct irq_host *h, unsigned int virq,
+ irq_hw_number_t hw)
{
- psurge_smp_message_recv();
- return IRQ_HANDLED;
+ irq_set_chip_and_handler(virq, &dummy_irq_chip, handle_percpu_irq);
+
+ return 0;
}
-static void smp_psurge_message_pass(int target, int msg)
+struct irq_host_ops psurge_host_ops = {
+ .map = psurge_host_map,
+};
+
+static int psurge_secondary_ipi_init(void)
{
- int i;
+ int rc = -ENOMEM;
- if (num_online_cpus() < 2)
- return;
+ psurge_host = irq_alloc_host(NULL, IRQ_HOST_MAP_NOMAP, 0,
+ &psurge_host_ops, 0);
- for_each_online_cpu(i) {
- if (target == MSG_ALL
- || (target == MSG_ALL_BUT_SELF && i != smp_processor_id())
- || target == i) {
- set_bit(msg, &psurge_smp_message[i]);
- psurge_set_ipi(i);
- }
- }
+ if (psurge_host)
+ psurge_secondary_virq = irq_create_direct_mapping(psurge_host);
+
+ if (psurge_secondary_virq)
+ rc = request_irq(psurge_secondary_virq, psurge_ipi_intr,
+ IRQF_DISABLED|IRQF_PERCPU, "IPI", NULL);
+
+ if (rc)
+ pr_err("Failed to setup secondary cpu IPI\n");
+
+ return rc;
}
/*
@@ -311,6 +316,9 @@ static int __init smp_psurge_probe(void)
ncpus = 2;
}
+ if (psurge_secondary_ipi_init())
+ return 1;
+
psurge_start = ioremap(PSURGE_START, 4);
psurge_pri_intr = ioremap(PSURGE_PRI_INTR, 4);
@@ -329,7 +337,7 @@ static int __init smp_psurge_probe(void)
return ncpus;
}
-static void __init smp_psurge_kick_cpu(int nr)
+static int __init smp_psurge_kick_cpu(int nr)
{
unsigned long start = __pa(__secondary_start_pmac_0) + nr * 8;
unsigned long a, flags;
@@ -394,11 +402,13 @@ static void __init smp_psurge_kick_cpu(int nr)
psurge_set_ipi(1);
if (ppc_md.progress) ppc_md.progress("smp_psurge_kick_cpu - done", 0x354);
+
+ return 0;
}
static struct irqaction psurge_irqaction = {
- .handler = psurge_primary_intr,
- .flags = IRQF_DISABLED,
+ .handler = psurge_ipi_intr,
+ .flags = IRQF_DISABLED|IRQF_PERCPU,
.name = "primary IPI",
};
@@ -437,14 +447,15 @@ void __init smp_psurge_give_timebase(void)
/* PowerSurge-style Macs */
struct smp_ops_t psurge_smp_ops = {
- .message_pass = smp_psurge_message_pass,
+ .message_pass = smp_muxed_ipi_message_pass,
+ .cause_ipi = smp_psurge_cause_ipi,
.probe = smp_psurge_probe,
.kick_cpu = smp_psurge_kick_cpu,
.setup_cpu = smp_psurge_setup_cpu,
.give_timebase = smp_psurge_give_timebase,
.take_timebase = smp_psurge_take_timebase,
};
-#endif /* CONFIG_PPC32 - actually powersurge support */
+#endif /* CONFIG_PPC_PMAC32_PSURGE */
/*
* Core 99 and later support
@@ -791,14 +802,14 @@ static int __init smp_core99_probe(void)
return ncpus;
}
-static void __devinit smp_core99_kick_cpu(int nr)
+static int __devinit smp_core99_kick_cpu(int nr)
{
unsigned int save_vector;
unsigned long target, flags;
unsigned int *vector = (unsigned int *)(PAGE_OFFSET+0x100);
if (nr < 0 || nr > 3)
- return;
+ return -ENOENT;
if (ppc_md.progress)
ppc_md.progress("smp_core99_kick_cpu", 0x346);
@@ -830,6 +841,8 @@ static void __devinit smp_core99_kick_cpu(int nr)
local_irq_restore(flags);
if (ppc_md.progress) ppc_md.progress("smp_core99_kick_cpu done", 0x347);
+
+ return 0;
}
static void __devinit smp_core99_setup_cpu(int cpu_nr)
@@ -842,6 +855,7 @@ static void __devinit smp_core99_setup_cpu(int cpu_nr)
mpic_setup_this_cpu();
}
+#ifdef CONFIG_PPC64
#ifdef CONFIG_HOTPLUG_CPU
static int smp_core99_cpu_notify(struct notifier_block *self,
unsigned long action, void *hcpu)
@@ -879,7 +893,6 @@ static struct notifier_block __cpuinitdata smp_core99_cpu_nb = {
static void __init smp_core99_bringup_done(void)
{
-#ifdef CONFIG_PPC64
extern void g5_phy_disable_cpu1(void);
/* Close i2c bus if it was used for tb sync */
@@ -894,14 +907,14 @@ static void __init smp_core99_bringup_done(void)
set_cpu_present(1, false);
g5_phy_disable_cpu1();
}
-#endif /* CONFIG_PPC64 */
-
#ifdef CONFIG_HOTPLUG_CPU
register_cpu_notifier(&smp_core99_cpu_nb);
#endif
+
if (ppc_md.progress)
ppc_md.progress("smp_core99_bringup_done", 0x349);
}
+#endif /* CONFIG_PPC64 */
#ifdef CONFIG_HOTPLUG_CPU
@@ -975,7 +988,9 @@ static void pmac_cpu_die(void)
struct smp_ops_t core99_smp_ops = {
.message_pass = smp_mpic_message_pass,
.probe = smp_core99_probe,
+#ifdef CONFIG_PPC64
.bringup_done = smp_core99_bringup_done,
+#endif
.kick_cpu = smp_core99_kick_cpu,
.setup_cpu = smp_core99_setup_cpu,
.give_timebase = smp_core99_give_timebase,
@@ -1000,7 +1015,7 @@ void __init pmac_setup_smp(void)
of_node_put(np);
smp_ops = &core99_smp_ops;
}
-#ifdef CONFIG_PPC32
+#ifdef CONFIG_PPC_PMAC32_PSURGE
else {
/* We have to set bits in cpu_possible_mask here since the
* secondary CPU(s) aren't in the device tree. Various
@@ -1013,7 +1028,7 @@ void __init pmac_setup_smp(void)
set_cpu_possible(cpu, true);
smp_ops = &psurge_smp_ops;
}
-#endif /* CONFIG_PPC32 */
+#endif /* CONFIG_PPC_PMAC32_PSURGE */
#ifdef CONFIG_HOTPLUG_CPU
ppc_md.cpu_die = pmac_cpu_die;