#include <asm/i8259.h>
#include "xics.h"
+#include "plpar_wrappers.h"
#define XICS_IPI 2
#define XICS_IRQ_SPURIOUS 0
/* LPAR low level accessors */
-static inline long plpar_eoi(unsigned long xirr)
-{
- return plpar_hcall_norets(H_EOI, xirr);
-}
-
-static inline long plpar_cppr(unsigned long cppr)
-{
- return plpar_hcall_norets(H_CPPR, cppr);
-}
-
-static inline long plpar_ipi(unsigned long servernum, unsigned long mfrr)
-{
- return plpar_hcall_norets(H_IPI, servernum, mfrr);
-}
-
-static inline long plpar_xirr(unsigned long *xirr_ret)
-{
- unsigned long dummy;
- return plpar_hcall(H_XIRR, 0, 0, 0, 0, xirr_ret, &dummy, &dummy);
-}
-
static inline unsigned int lpar_xirr_info_get(int n_cpu)
{
unsigned long lpar_rc;
*
* XXX: undo of teardown on kexec needs this too, as may hotplug
*/
- rtas_set_indicator(GLOBAL_INTERRUPT_QUEUE,
+ rtas_set_indicator_fast(GLOBAL_INTERRUPT_QUEUE,
(1UL << interrupt_server_size) - 1 - default_distrib_server, 1);
}
}
static int xics_host_map_direct(struct irq_host *h, unsigned int virq,
- irq_hw_number_t hw, unsigned int flags)
+ irq_hw_number_t hw)
{
- unsigned int sense = flags & IRQ_TYPE_SENSE_MASK;
-
- pr_debug("xics: map_direct virq %d, hwirq 0x%lx, flags: 0x%x\n",
- virq, hw, flags);
-
- if (sense && sense != IRQ_TYPE_LEVEL_LOW)
- printk(KERN_WARNING "xics: using unsupported sense 0x%x"
- " for irq %d (h: 0x%lx)\n", flags, virq, hw);
+ pr_debug("xics: map_direct virq %d, hwirq 0x%lx\n", virq, hw);
get_irq_desc(virq)->status |= IRQ_LEVEL;
set_irq_chip_and_handler(virq, &xics_pic_direct, handle_fasteoi_irq);
}
static int xics_host_map_lpar(struct irq_host *h, unsigned int virq,
- irq_hw_number_t hw, unsigned int flags)
+ irq_hw_number_t hw)
{
- unsigned int sense = flags & IRQ_TYPE_SENSE_MASK;
-
- pr_debug("xics: map_lpar virq %d, hwirq 0x%lx, flags: 0x%x\n",
- virq, hw, flags);
-
- if (sense && sense != IRQ_TYPE_LEVEL_LOW)
- printk(KERN_WARNING "xics: using unsupported sense 0x%x"
- " for irq %d (h: 0x%lx)\n", flags, virq, hw);
+ pr_debug("xics: map_direct virq %d, hwirq 0x%lx\n", virq, hw);
get_irq_desc(virq)->status |= IRQ_LEVEL;
set_irq_chip_and_handler(virq, &xics_pic_lpar, handle_fasteoi_irq);
unsigned int *indx)
{
unsigned int ilen;
- u32 *ireg;
+ const u32 *ireg;
/* This code does the theorically broken assumption that the interrupt
* server numbers are the same as the hard CPU numbers.
* This happens to be the case so far but we are playing with fire...
* should be fixed one of these days. -BenH.
*/
- ireg = (u32 *)get_property(np, "ibm,interrupt-server-ranges", NULL);
+ ireg = get_property(np, "ibm,interrupt-server-ranges", NULL);
/* Do that ever happen ? we'll know soon enough... but even good'old
* f80 does have that property ..
*/
*indx = *ireg;
}
- ireg = (u32 *)get_property(np, "reg", &ilen);
+ ireg = get_property(np, "reg", &ilen);
if (!ireg)
panic("xics_init_IRQ: can't find interrupt reg property");
{
struct device_node *np, *old, *found = NULL;
int cascade, naddr;
- u32 *addrp;
+ const u32 *addrp;
unsigned long intack = 0;
for_each_node_by_type(np, "interrupt-controller")
break;
if (strcmp(np->name, "pci") != 0)
continue;
- addrp = (u32 *)get_property(np, "8259-interrupt-acknowledge", NULL);
+ addrp = get_property(np, "8259-interrupt-acknowledge", NULL);
if (addrp == NULL)
continue;
naddr = prom_n_addr_cells(np);
{
int i;
struct device_node *np;
- u32 *ireg, ilen, indx = 0;
+ u32 ilen, indx = 0;
+ const u32 *ireg;
int found = 0;
ppc64_boot_msg(0x20, "XICS Init");
for (np = of_find_node_by_type(NULL, "cpu");
np;
np = of_find_node_by_type(np, "cpu")) {
- ireg = (u32 *)get_property(np, "reg", &ilen);
+ ireg = get_property(np, "reg", &ilen);
if (ireg && ireg[0] == get_hard_smp_processor_id(boot_cpuid)) {
- ireg = (u32 *)get_property(np,
- "ibm,ppc-interrupt-gserver#s",
- &ilen);
+ ireg = get_property(np,
+ "ibm,ppc-interrupt-gserver#s", &ilen);
i = ilen / sizeof(int);
if (ireg && i > 0) {
default_server = ireg[0];
/* take last element */
default_distrib_server = ireg[i-1];
}
- ireg = (u32 *)get_property(np,
+ ireg = get_property(np,
"ibm,interrupt-server#-size", NULL);
if (ireg)
interrupt_server_size = *ireg;
{
unsigned int ipi;
- ipi = irq_create_mapping(xics_host, XICS_IPI, 0);
+ ipi = irq_create_mapping(xics_host, XICS_IPI);
BUG_ON(ipi == NO_IRQ);
/*
xics_set_cpu_priority(cpu, 0);
+ /*
+ * Clear IPI
+ */
+ if (firmware_has_feature(FW_FEATURE_LPAR))
+ lpar_qirr_info(cpu, 0xff);
+ else
+ direct_qirr_info(cpu, 0xff);
+
/*
* we need to EOI the IPI if we got here from kexec down IPI
*
return;
desc = get_irq_desc(ipi);
if (desc->chip && desc->chip->eoi)
- desc->chip->eoi(XICS_IPI);
+ desc->chip->eoi(ipi);
/*
* Some machines need to have at least one cpu in the GIQ,
* so leave the master cpu in the group.
*/
if (secondary)
- rtas_set_indicator(GLOBAL_INTERRUPT_QUEUE,
+ rtas_set_indicator_fast(GLOBAL_INTERRUPT_QUEUE,
(1UL << interrupt_server_size) - 1 -
default_distrib_server, 0);
}
xics_set_cpu_priority(cpu, 0);
/* remove ourselves from the global interrupt queue */
- status = rtas_set_indicator(GLOBAL_INTERRUPT_QUEUE,
+ status = rtas_set_indicator_fast(GLOBAL_INTERRUPT_QUEUE,
(1UL << interrupt_server_size) - 1 - default_distrib_server, 0);
WARN_ON(status < 0);
git.openpandora.org / pandora-kernel.git / blobdiff