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Diffstat (limited to 'arch/powerpc/platforms/pseries/setup.c')
-rw-r--r--arch/powerpc/platforms/pseries/setup.c105
1 files changed, 61 insertions, 44 deletions
diff --git a/arch/powerpc/platforms/pseries/setup.c b/arch/powerpc/platforms/pseries/setup.c
index fdb9b1c8f977..f66aa9c3b135 100644
--- a/arch/powerpc/platforms/pseries/setup.c
+++ b/arch/powerpc/platforms/pseries/setup.c
@@ -76,9 +76,6 @@
#define DBG(fmt...)
#endif
-/* move those away to a .h */
-extern void find_udbg_vterm(void);
-
int fwnmi_active; /* TRUE if an FWNMI handler is present */
static void pseries_shared_idle_sleep(void);
@@ -127,14 +124,60 @@ void pseries_8259_cascade(unsigned int irq, struct irq_desc *desc)
desc->chip->eoi(irq);
}
-static void __init pseries_mpic_init_IRQ(void)
+static void __init pseries_setup_i8259_cascade(void)
{
- struct device_node *np, *old, *cascade = NULL;
- const unsigned int *addrp;
+ struct device_node *np, *old, *found = NULL;
+ unsigned int cascade;
+ const u32 *addrp;
unsigned long intack = 0;
+ int naddr;
+
+ for_each_node_by_type(np, "interrupt-controller") {
+ if (of_device_is_compatible(np, "chrp,iic")) {
+ found = np;
+ break;
+ }
+ }
+
+ if (found == NULL) {
+ printk(KERN_DEBUG "pic: no ISA interrupt controller\n");
+ return;
+ }
+
+ cascade = irq_of_parse_and_map(found, 0);
+ if (cascade == NO_IRQ) {
+ printk(KERN_ERR "pic: failed to map cascade interrupt");
+ return;
+ }
+ pr_debug("pic: cascade mapped to irq %d\n", cascade);
+
+ for (old = of_node_get(found); old != NULL ; old = np) {
+ np = of_get_parent(old);
+ of_node_put(old);
+ if (np == NULL)
+ break;
+ if (strcmp(np->name, "pci") != 0)
+ continue;
+ addrp = of_get_property(np, "8259-interrupt-acknowledge", NULL);
+ if (addrp == NULL)
+ continue;
+ naddr = of_n_addr_cells(np);
+ intack = addrp[naddr-1];
+ if (naddr > 1)
+ intack |= ((unsigned long)addrp[naddr-2]) << 32;
+ }
+ if (intack)
+ printk(KERN_DEBUG "pic: PCI 8259 intack at 0x%016lx\n", intack);
+ i8259_init(found, intack);
+ of_node_put(found);
+ set_irq_chained_handler(cascade, pseries_8259_cascade);
+}
+
+static void __init pseries_mpic_init_IRQ(void)
+{
+ struct device_node *np;
const unsigned int *opprop;
unsigned long openpic_addr = 0;
- unsigned int cascade_irq;
int naddr, n, i, opplen;
struct mpic *mpic;
@@ -167,43 +210,13 @@ static void __init pseries_mpic_init_IRQ(void)
mpic_init(mpic);
/* Look for cascade */
- for_each_node_by_type(np, "interrupt-controller")
- if (of_device_is_compatible(np, "chrp,iic")) {
- cascade = np;
- break;
- }
- if (cascade == NULL)
- return;
-
- cascade_irq = irq_of_parse_and_map(cascade, 0);
- if (cascade_irq == NO_IRQ) {
- printk(KERN_ERR "mpic: failed to map cascade interrupt");
- return;
- }
+ pseries_setup_i8259_cascade();
+}
- /* Check ACK type */
- for (old = of_node_get(cascade); old != NULL ; old = np) {
- np = of_get_parent(old);
- of_node_put(old);
- if (np == NULL)
- break;
- if (strcmp(np->name, "pci") != 0)
- continue;
- addrp = of_get_property(np, "8259-interrupt-acknowledge",
- NULL);
- if (addrp == NULL)
- continue;
- naddr = of_n_addr_cells(np);
- intack = addrp[naddr-1];
- if (naddr > 1)
- intack |= ((unsigned long)addrp[naddr-2]) << 32;
- }
- if (intack)
- printk(KERN_DEBUG "mpic: PCI 8259 intack at 0x%016lx\n",
- intack);
- i8259_init(cascade, intack);
- of_node_put(cascade);
- set_irq_chained_handler(cascade_irq, pseries_8259_cascade);
+static void __init pseries_xics_init_IRQ(void)
+{
+ xics_init_IRQ();
+ pseries_setup_i8259_cascade();
}
static void pseries_lpar_enable_pmcs(void)
@@ -235,7 +248,7 @@ static void __init pseries_discover_pic(void)
smp_init_pseries_mpic();
return;
} else if (strstr(typep, "ppc-xicp")) {
- ppc_md.init_IRQ = xics_init_IRQ;
+ ppc_md.init_IRQ = pseries_xics_init_IRQ;
setup_kexec_cpu_down_xics();
smp_init_pseries_xics();
return;
@@ -393,6 +406,7 @@ static void pseries_dedicated_idle_sleep(void)
{
unsigned int cpu = smp_processor_id();
unsigned long start_snooze;
+ unsigned long in_purr, out_purr;
/*
* Indicate to the HV that we are idle. Now would be
@@ -400,6 +414,7 @@ static void pseries_dedicated_idle_sleep(void)
*/
get_lppaca()->idle = 1;
get_lppaca()->donate_dedicated_cpu = 1;
+ in_purr = mfspr(SPRN_PURR);
/*
* We come in with interrupts disabled, and need_resched()
@@ -432,6 +447,8 @@ static void pseries_dedicated_idle_sleep(void)
out:
HMT_medium();
+ out_purr = mfspr(SPRN_PURR);
+ get_lppaca()->wait_state_cycles += out_purr - in_purr;
get_lppaca()->donate_dedicated_cpu = 0;
get_lppaca()->idle = 0;
}