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authorDavid S. Miller <davem@sunset.davemloft.net>2006-02-15 19:48:54 -0800
committerDavid S. Miller <davem@sunset.davemloft.net>2006-03-20 01:13:05 -0800
commit9d29a3fafd06534ad73427fee3c968c094d05b9b (patch)
tree4afd7455d6249d9143acea6c4704f69aa98d311a /arch/sparc64/kernel/devices.c
parent7890f794e0e6f7dce2a5f4a03ba64b0b3fe306bd (diff)
[SPARC64]: Decode virtual-devices interrupts correctly.
Need to translate through the interrupt-map{,-mask] properties. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc64/kernel/devices.c')
-rw-r--r--arch/sparc64/kernel/devices.c98
1 files changed, 86 insertions, 12 deletions
diff --git a/arch/sparc64/kernel/devices.c b/arch/sparc64/kernel/devices.c
index 71eee392e14..1341b99ca7a 100644
--- a/arch/sparc64/kernel/devices.c
+++ b/arch/sparc64/kernel/devices.c
@@ -22,6 +22,7 @@
#include <asm/timer.h>
#include <asm/cpudata.h>
#include <asm/vdev.h>
+#include <asm/irq.h>
/* Used to synchronize acceses to NatSemi SUPER I/O chip configure
* operations in asm/ns87303.h
@@ -33,14 +34,28 @@ extern void central_probe(void);
u32 sun4v_vdev_devhandle;
int sun4v_vdev_root;
-struct linux_prom_pci_intmap *sun4v_vdev_intmap;
-int sun4v_vdev_num_intmap;
-struct linux_prom_pci_intmap sun4v_vdev_intmask;
+
+struct vdev_intmap {
+ unsigned int phys;
+ unsigned int irq;
+ unsigned int cnode;
+ unsigned int cinterrupt;
+};
+
+struct vdev_intmask {
+ unsigned int phys;
+ unsigned int interrupt;
+ unsigned int __unused;
+};
+
+static struct vdev_intmap *vdev_intmap;
+static int vdev_num_intmap;
+static struct vdev_intmask vdev_intmask;
static void __init sun4v_virtual_device_probe(void)
{
struct linux_prom64_registers regs;
- struct linux_prom_pci_intmap *ip;
+ struct vdev_intmap *ip;
int node, sz, err;
if (tlb_type != hypervisor)
@@ -58,10 +73,21 @@ static void __init sun4v_virtual_device_probe(void)
prom_getproperty(node, "reg", (char *)&regs, sizeof(regs));
sun4v_vdev_devhandle = (regs.phys_addr >> 32UL) & 0x0fffffff;
- sz = sizeof(*ip) * 64;
- sun4v_vdev_intmap = ip = alloc_bootmem_low_pages(sz);
- if (!sun4v_vdev_intmap) {
- prom_printf("SUN4V: Error, cannot allocate vdev intmap.\n");
+ sz = prom_getproplen(node, "interrupt-map");
+ if (sz <= 0) {
+ prom_printf("SUN4V: Error, no vdev interrupt-map.\n");
+ prom_halt();
+ }
+
+ if ((sz % sizeof(*ip)) != 0) {
+ prom_printf("SUN4V: Bogus interrupt-map property size %d\n",
+ sz);
+ prom_halt();
+ }
+
+ vdev_intmap = ip = alloc_bootmem_low_pages(sz);
+ if (!vdev_intmap) {
+ prom_printf("SUN4V: Error, cannot allocate vdev_intmap.\n");
prom_halt();
}
@@ -70,22 +96,70 @@ static void __init sun4v_virtual_device_probe(void)
prom_printf("SUN4V: Fatal error, no vdev interrupt-map.\n");
prom_halt();
}
+ if (err != sz) {
+ prom_printf("SUN4V: Inconsistent interrupt-map size, "
+ "proplen(%d) vs getprop(%d).\n", sz,err);
+ prom_halt();
+ }
- sun4v_vdev_num_intmap = err / sizeof(*ip);
+ vdev_num_intmap = err / sizeof(*ip);
err = prom_getproperty(node, "interrupt-map-mask",
- (char *) &sun4v_vdev_intmask,
- sizeof(sun4v_vdev_intmask));
- if (err == -1) {
+ (char *) &vdev_intmask,
+ sizeof(vdev_intmask));
+ if (err <= 0) {
prom_printf("SUN4V: Fatal error, no vdev "
"interrupt-map-mask.\n");
prom_halt();
}
+ if (err % sizeof(vdev_intmask)) {
+ prom_printf("SUN4V: Bogus interrupt-map-mask "
+ "property size %d\n", err);
+ prom_halt();
+ }
printk("SUN4V: virtual-devices devhandle[%x]\n",
sun4v_vdev_devhandle);
}
+unsigned int sun4v_vdev_device_interrupt(unsigned int dev_node)
+{
+ unsigned int irq, reg;
+ int err, i;
+
+ err = prom_getproperty(dev_node, "interrupts",
+ (char *) &irq, sizeof(irq));
+ if (err <= 0) {
+ printk("VDEV: Cannot get \"interrupts\" "
+ "property for OBP node %x\n", dev_node);
+ return 0;
+ }
+
+ err = prom_getproperty(dev_node, "reg",
+ (char *) &reg, sizeof(reg));
+ if (err <= 0) {
+ printk("VDEV: Cannot get \"reg\" "
+ "property for OBP node %x\n", dev_node);
+ return 0;
+ }
+
+ for (i = 0; i < vdev_num_intmap; i++) {
+ if (vdev_intmap[i].phys == (reg & vdev_intmask.phys) &&
+ vdev_intmap[i].irq == (irq & vdev_intmask.interrupt)) {
+ irq = vdev_intmap[i].cinterrupt;
+ break;
+ }
+ }
+
+ if (i == vdev_num_intmap) {
+ printk("VDEV: No matching interrupt map entry "
+ "for OBP node %x\n", dev_node);
+ return 0;
+ }
+
+ return sun4v_build_irq(sun4v_vdev_devhandle, irq, 4, 0);
+}
+
static const char *cpu_mid_prop(void)
{
if (tlb_type == spitfire)