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authorDavid S. Miller <davem@sunset.davemloft.net>2007-06-13 00:01:04 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2007-06-13 00:01:04 -0700
commit4a907dec9845001dc2b117a0ed2a2150384a4cea (patch)
tree2c646d9247ebb426e77e4c0f2faaf6d4a6b2bb87 /arch/sparc64
parenta0e1d1d075cc0efe9a3ac8579bce9393d070e09f (diff)
downloadlinux-2.6.34-ux500-4a907dec9845001dc2b117a0ed2a2150384a4cea.tar.gz
[SPARC64]: Wire up cookie based sun4v interrupt registry.
This will be used for logical domain channel interrupts. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc64')
-rw-r--r--arch/sparc64/kernel/irq.c131
1 files changed, 122 insertions, 9 deletions
diff --git a/arch/sparc64/kernel/irq.c b/arch/sparc64/kernel/irq.c
index a36f8dd0c02..e60d283f60b 100644
--- a/arch/sparc64/kernel/irq.c
+++ b/arch/sparc64/kernel/irq.c
@@ -1,7 +1,6 @@
-/* $Id: irq.c,v 1.114 2002/01/11 08:45:38 davem Exp $
- * irq.c: UltraSparc IRQ handling/init/registry.
+/* irq.c: UltraSparc IRQ handling/init/registry.
*
- * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
+ * Copyright (C) 1997, 2007 David S. Miller (davem@davemloft.net)
* Copyright (C) 1998 Eddie C. Dost (ecd@skynet.be)
* Copyright (C) 1998 Jakub Jelinek (jj@ultra.linux.cz)
*/
@@ -43,6 +42,7 @@
#include <asm/cpudata.h>
#include <asm/auxio.h>
#include <asm/head.h>
+#include <asm/hypervisor.h>
/* UPA nodes send interrupt packet to UltraSparc with first data reg
* value low 5 (7 on Starfire) bits holding the IRQ identifier being
@@ -380,6 +380,76 @@ static void sun4v_irq_end(unsigned int virt_irq)
}
}
+static void sun4v_virq_enable(unsigned int virt_irq)
+{
+ struct ino_bucket *bucket = virt_irq_to_bucket(virt_irq);
+ unsigned int ino = bucket - &ivector_table[0];
+
+ if (likely(bucket)) {
+ unsigned long cpuid, dev_handle, dev_ino;
+ int err;
+
+ cpuid = irq_choose_cpu(virt_irq);
+
+ dev_handle = ino & IMAP_IGN;
+ dev_ino = ino & IMAP_INO;
+
+ err = sun4v_vintr_set_target(dev_handle, dev_ino, cpuid);
+ if (err != HV_EOK)
+ printk("sun4v_vintr_set_target(%lx,%lx,%lu): "
+ "err(%d)\n",
+ dev_handle, dev_ino, cpuid, err);
+ err = sun4v_vintr_set_state(dev_handle, dev_ino,
+ HV_INTR_ENABLED);
+ if (err != HV_EOK)
+ printk("sun4v_vintr_set_state(%lx,%lx,"
+ "HV_INTR_ENABLED): err(%d)\n",
+ dev_handle, dev_ino, err);
+ }
+}
+
+static void sun4v_virq_disable(unsigned int virt_irq)
+{
+ struct ino_bucket *bucket = virt_irq_to_bucket(virt_irq);
+ unsigned int ino = bucket - &ivector_table[0];
+
+ if (likely(bucket)) {
+ unsigned long dev_handle, dev_ino;
+ int err;
+
+ dev_handle = ino & IMAP_IGN;
+ dev_ino = ino & IMAP_INO;
+
+ err = sun4v_vintr_set_state(dev_handle, dev_ino,
+ HV_INTR_DISABLED);
+ if (err != HV_EOK)
+ printk("sun4v_vintr_set_state(%lx,%lx,"
+ "HV_INTR_DISABLED): err(%d)\n",
+ dev_handle, dev_ino, err);
+ }
+}
+
+static void sun4v_virq_end(unsigned int virt_irq)
+{
+ struct ino_bucket *bucket = virt_irq_to_bucket(virt_irq);
+ unsigned int ino = bucket - &ivector_table[0];
+
+ if (likely(bucket)) {
+ unsigned long dev_handle, dev_ino;
+ int err;
+
+ dev_handle = ino & IMAP_IGN;
+ dev_ino = ino & IMAP_INO;
+
+ err = sun4v_vintr_set_state(dev_handle, dev_ino,
+ HV_INTR_STATE_IDLE);
+ if (err != HV_EOK)
+ printk("sun4v_vintr_set_state(%lx,%lx,"
+ "HV_INTR_STATE_IDLE): err(%d)\n",
+ dev_handle, dev_ino, err);
+ }
+}
+
static void run_pre_handler(unsigned int virt_irq)
{
struct ino_bucket *bucket = virt_irq_to_bucket(virt_irq);
@@ -434,6 +504,21 @@ static struct irq_chip sun4v_msi = {
};
#endif
+static struct irq_chip sun4v_virq = {
+ .typename = "vsun4v",
+ .enable = sun4v_virq_enable,
+ .disable = sun4v_virq_disable,
+ .end = sun4v_virq_end,
+};
+
+static struct irq_chip sun4v_virq_ack = {
+ .typename = "vsun4v+ack",
+ .enable = sun4v_virq_enable,
+ .disable = sun4v_virq_disable,
+ .ack = run_pre_handler,
+ .end = sun4v_virq_end,
+};
+
void irq_install_pre_handler(int virt_irq,
void (*func)(unsigned int, void *, void *),
void *arg1, void *arg2)
@@ -447,7 +532,8 @@ void irq_install_pre_handler(int virt_irq,
chip = get_irq_chip(virt_irq);
if (chip == &sun4u_irq_ack ||
- chip == &sun4v_irq_ack
+ chip == &sun4v_irq_ack ||
+ chip == &sun4v_virq_ack
#ifdef CONFIG_PCI_MSI
|| chip == &sun4v_msi
#endif
@@ -455,7 +541,9 @@ void irq_install_pre_handler(int virt_irq,
return;
chip = (chip == &sun4u_irq ?
- &sun4u_irq_ack : &sun4v_irq_ack);
+ &sun4u_irq_ack :
+ (chip == &sun4v_irq ?
+ &sun4v_irq_ack : &sun4v_virq_ack));
set_irq_chip(virt_irq, chip);
}
@@ -492,19 +580,18 @@ out:
return bucket->virt_irq;
}
-unsigned int sun4v_build_irq(u32 devhandle, unsigned int devino)
+static unsigned int sun4v_build_common(unsigned long sysino,
+ struct irq_chip *chip)
{
struct ino_bucket *bucket;
struct irq_handler_data *data;
- unsigned long sysino;
BUG_ON(tlb_type != hypervisor);
- sysino = sun4v_devino_to_sysino(devhandle, devino);
bucket = &ivector_table[sysino];
if (!bucket->virt_irq) {
bucket->virt_irq = virt_irq_alloc(__irq(bucket));
- set_irq_chip(bucket->virt_irq, &sun4v_irq);
+ set_irq_chip(bucket->virt_irq, chip);
}
data = get_irq_chip_data(bucket->virt_irq);
@@ -529,6 +616,32 @@ out:
return bucket->virt_irq;
}
+unsigned int sun4v_build_irq(u32 devhandle, unsigned int devino)
+{
+ unsigned long sysino = sun4v_devino_to_sysino(devhandle, devino);
+
+ return sun4v_build_common(sysino, &sun4v_irq);
+}
+
+unsigned int sun4v_build_virq(u32 devhandle, unsigned int devino)
+{
+ unsigned long sysino, hv_err;
+
+ BUG_ON(devhandle & ~IMAP_IGN);
+ BUG_ON(devino & ~IMAP_INO);
+
+ sysino = devhandle | devino;
+
+ hv_err = sun4v_vintr_set_cookie(devhandle, devino, sysino);
+ if (hv_err) {
+ prom_printf("IRQ: Fatal, cannot set cookie for [%x:%x] "
+ "err=%lu\n", devhandle, devino, hv_err);
+ prom_halt();
+ }
+
+ return sun4v_build_common(sysino, &sun4v_virq);
+}
+
#ifdef CONFIG_PCI_MSI
unsigned int sun4v_build_msi(u32 devhandle, unsigned int *virt_irq_p,
unsigned int msi_start, unsigned int msi_end)