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Diffstat (limited to 'arch/powerpc/platforms/powermac/pic.c')
-rw-r--r--arch/powerpc/platforms/powermac/pic.c100
1 files changed, 47 insertions, 53 deletions
diff --git a/arch/powerpc/platforms/powermac/pic.c b/arch/powerpc/platforms/powermac/pic.c
index f5f9ad7c3398..1959cc13438f 100644
--- a/arch/powerpc/platforms/powermac/pic.c
+++ b/arch/powerpc/platforms/powermac/pic.c
@@ -1,18 +1,13 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Support for the interrupt controllers found on Power Macintosh,
* currently Apple's "Grand Central" interrupt controller in all
- * it's incarnations. OpenPIC support used on newer machines is
+ * its incarnations. OpenPIC support used on newer machines is
* in a separate file
*
* Copyright (C) 1997 Paul Mackerras (paulus@samba.org)
* Copyright (C) 2005 Benjamin Herrenschmidt (benh@kernel.crashing.org)
* IBM, Corp.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- *
*/
#include <linux/stddef.h>
@@ -23,12 +18,15 @@
#include <linux/interrupt.h>
#include <linux/syscore_ops.h>
#include <linux/adb.h>
+#include <linux/minmax.h>
#include <linux/pmu.h>
+#include <linux/irqdomain.h>
+#include <linux/of_address.h>
+#include <linux/of_irq.h>
#include <asm/sections.h>
#include <asm/io.h>
#include <asm/smp.h>
-#include <asm/prom.h>
#include <asm/pci-bridge.h>
#include <asm/time.h>
#include <asm/pmac_feature.h>
@@ -252,23 +250,9 @@ static unsigned int pmac_pic_get_irq(void)
raw_spin_unlock_irqrestore(&pmac_pic_lock, flags);
if (unlikely(irq < 0))
return 0;
- return irq_linear_revmap(pmac_pic_host, irq);
+ return irq_find_mapping(pmac_pic_host, irq);
}
-#ifdef CONFIG_XMON
-static struct irqaction xmon_action = {
- .handler = xmon_irq,
- .flags = IRQF_NO_THREAD,
- .name = "NMI - XMON"
-};
-#endif
-
-static struct irqaction gatwick_cascade_action = {
- .handler = gatwick_action,
- .flags = IRQF_NO_THREAD,
- .name = "cascade",
-};
-
static int pmac_pic_host_match(struct irq_domain *h, struct device_node *node,
enum irq_domain_bus_token bus_token)
{
@@ -330,11 +314,8 @@ static void __init pmac_pic_probe_oldstyle(void)
/* Check ordering of master & slave */
if (of_device_is_compatible(master, "gatwick")) {
- struct device_node *tmp;
BUG_ON(slave == NULL);
- tmp = master;
- master = slave;
- slave = tmp;
+ swap(master, slave);
}
/* We found a slave */
@@ -346,10 +327,11 @@ static void __init pmac_pic_probe_oldstyle(void)
/*
* Allocate an irq host
*/
- pmac_pic_host = irq_domain_add_linear(master, max_irqs,
- &pmac_pic_host_ops, NULL);
+ pmac_pic_host = irq_domain_create_linear(of_fwnode_handle(master),
+ max_irqs,
+ &pmac_pic_host_ops, NULL);
BUG_ON(pmac_pic_host == NULL);
- irq_set_default_host(pmac_pic_host);
+ irq_set_default_domain(pmac_pic_host);
/* Get addresses of first controller if we have a node for it */
BUG_ON(of_address_to_resource(master, 0, &r));
@@ -364,8 +346,8 @@ static void __init pmac_pic_probe_oldstyle(void)
(addr + 0x10);
of_node_put(master);
- printk(KERN_INFO "irq: Found primary Apple PIC %s for %d irqs\n",
- master->full_name, max_real_irqs);
+ printk(KERN_INFO "irq: Found primary Apple PIC %pOF for %d irqs\n",
+ master, max_real_irqs);
/* Map interrupts of cascaded controller */
if (slave && !of_address_to_resource(slave, 0, &r)) {
@@ -378,8 +360,8 @@ static void __init pmac_pic_probe_oldstyle(void)
(addr + 0x10);
pmac_irq_cascade = irq_of_parse_and_map(slave, 0);
- printk(KERN_INFO "irq: Found slave Apple PIC %s for %d irqs"
- " cascade: %d\n", slave->full_name,
+ printk(KERN_INFO "irq: Found slave Apple PIC %pOF for %d irqs"
+ " cascade: %d\n", slave,
max_irqs - max_real_irqs, pmac_irq_cascade);
}
of_node_put(slave);
@@ -389,16 +371,21 @@ static void __init pmac_pic_probe_oldstyle(void)
out_le32(&pmac_irq_hw[i]->enable, 0);
/* Hookup cascade irq */
- if (slave && pmac_irq_cascade)
- setup_irq(pmac_irq_cascade, &gatwick_cascade_action);
+ if (slave && pmac_irq_cascade) {
+ if (request_irq(pmac_irq_cascade, gatwick_action,
+ IRQF_NO_THREAD, "cascade", NULL))
+ pr_err("Failed to register cascade interrupt\n");
+ }
printk(KERN_INFO "irq: System has %d possible interrupts\n", max_irqs);
#ifdef CONFIG_XMON
- setup_irq(irq_create_mapping(NULL, 20), &xmon_action);
+ i = irq_create_mapping(NULL, 20);
+ if (request_irq(i, xmon_irq, IRQF_NO_THREAD, "NMI - XMON", NULL))
+ pr_err("Failed to register NMI-XMON interrupt\n");
#endif
}
-int of_irq_parse_oldworld(struct device_node *device, int index,
+int of_irq_parse_oldworld(const struct device_node *device, int index,
struct of_phandle_args *out_irq)
{
const u32 *ints = NULL;
@@ -417,7 +404,7 @@ int of_irq_parse_oldworld(struct device_node *device, int index,
if (ints != NULL)
break;
device = device->parent;
- if (device && strcmp(device->type, "pci") != 0)
+ if (!of_node_is_type(device, "pci"))
break;
}
if (ints == NULL)
@@ -446,7 +433,9 @@ static void __init pmac_pic_setup_mpic_nmi(struct mpic *mpic)
nmi_irq = irq_of_parse_and_map(pswitch, 0);
if (nmi_irq) {
mpic_irq_set_priority(nmi_irq, 9);
- setup_irq(nmi_irq, &xmon_action);
+ if (request_irq(nmi_irq, xmon_irq, IRQF_NO_THREAD,
+ "NMI - XMON", NULL))
+ pr_err("Failed to register NMI-XMON interrupt\n");
}
of_node_put(pswitch);
}
@@ -462,7 +451,7 @@ static struct mpic * __init pmac_setup_one_mpic(struct device_node *np,
pmac_call_feature(PMAC_FTR_ENABLE_MPIC, np, 0, 0);
- if (of_get_property(np, "big-endian", NULL))
+ if (of_property_read_bool(np, "big-endian"))
flags |= MPIC_BIG_ENDIAN;
/* Primary Big Endian means HT interrupts. This is quite dodgy
@@ -486,15 +475,15 @@ static int __init pmac_pic_probe_mpic(void)
struct device_node *np, *master = NULL, *slave = NULL;
/* We can have up to 2 MPICs cascaded */
- for (np = NULL; (np = of_find_node_by_type(np, "open-pic"))
- != NULL;) {
- if (master == NULL &&
- of_get_property(np, "interrupts", NULL) == NULL)
+ for_each_node_by_type(np, "open-pic") {
+ if (master == NULL && !of_property_present(np, "interrupts"))
master = of_node_get(np);
else if (slave == NULL)
slave = of_node_get(np);
- if (master && slave)
+ if (master && slave) {
+ of_node_put(np);
break;
+ }
}
/* Check for bogus setups */
@@ -539,7 +528,7 @@ void __init pmac_pic_init(void)
#ifdef CONFIG_PPC32
if (!pmac_newworld)
of_irq_workarounds |= OF_IMAP_OLDWORLD_MAC;
- if (of_get_property(of_chosen, "linux,bootx", NULL) != NULL)
+ if (of_property_read_bool(of_chosen, "linux,bootx"))
of_irq_workarounds |= OF_IMAP_NO_PHANDLE;
/* If we don't have phandles on a newworld, then try to locate a
@@ -552,13 +541,13 @@ void __init pmac_pic_init(void)
for_each_node_with_property(np, "interrupt-controller") {
/* Skip /chosen/interrupt-controller */
- if (strcmp(np->name, "chosen") == 0)
+ if (of_node_name_eq(np, "chosen"))
continue;
/* It seems like at least one person wants
* to use BootX on a machine with an AppleKiwi
* controller which happens to pretend to be an
* interrupt controller too. */
- if (strcmp(np->name, "AppleKiwi") == 0)
+ if (of_node_name_eq(np, "AppleKiwi"))
continue;
/* I think we found one ! */
of_irq_dflt_pic = np;
@@ -604,13 +593,14 @@ static int pmacpic_find_viaint(void)
if (np == NULL)
goto not_found;
viaint = irq_of_parse_and_map(np, 0);
+ of_node_put(np);
not_found:
#endif /* CONFIG_ADB_PMU */
return viaint;
}
-static int pmacpic_suspend(void)
+static int pmacpic_suspend(void *data)
{
int viaint = pmacpic_find_viaint();
@@ -631,7 +621,7 @@ static int pmacpic_suspend(void)
return 0;
}
-static void pmacpic_resume(void)
+static void pmacpic_resume(void *data)
{
int i;
@@ -644,15 +634,19 @@ static void pmacpic_resume(void)
pmac_unmask_irq(irq_get_irq_data(i));
}
-static struct syscore_ops pmacpic_syscore_ops = {
+static const struct syscore_ops pmacpic_syscore_ops = {
.suspend = pmacpic_suspend,
.resume = pmacpic_resume,
};
+static struct syscore pmacpic_syscore = {
+ .ops = &pmacpic_syscore_ops,
+};
+
static int __init init_pmacpic_syscore(void)
{
if (pmac_irq_hw[0])
- register_syscore_ops(&pmacpic_syscore_ops);
+ register_syscore(&pmacpic_syscore);
return 0;
}
generated by cgit (git 2.34.1) at 2025-12-26 04:53:02 +0000