X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=drivers%2Fparisc%2Fiosapic.c;h=7a458d5bc75134d925aa272b34af805f1646384e;hb=43bc926fffd92024b46cafaf7350d669ba9ca884;hp=91df0bf181ddf7b6d3e9d889af3e7d2714b1ba22;hpb=cee37fe97739d85991964371c1f3a745c00dd236;p=linux-2.6.git

diff --git a/drivers/parisc/iosapic.c b/drivers/parisc/iosapic.c
index 91df0bf18..7a458d5bc 100644
--- a/drivers/parisc/iosapic.c
+++ b/drivers/parisc/iosapic.c
@@ -215,7 +215,7 @@ static inline void iosapic_write(void __iomem *iosapic, unsigned int reg, u32 va
 #define IOSAPIC_IRDT_ID_EID_SHIFT              0x10
 
 
-static spinlock_t iosapic_lock = SPIN_LOCK_UNLOCKED;
+static DEFINE_SPINLOCK(iosapic_lock);
 
 static inline void iosapic_eoi(void __iomem *addr, unsigned int data)
 {
@@ -244,7 +244,7 @@ static struct irt_entry *iosapic_alloc_irt(int num_entries)
 	 * 4-byte alignment on 32-bit kernels
 	 */
 	a = (unsigned long)kmalloc(sizeof(struct irt_entry) * num_entries + 8, GFP_KERNEL);
-	a = (a + 7) & ~7;
+	a = (a + 7UL) & ~7UL;
 	return (struct irt_entry *)a;
 }
 
@@ -700,6 +700,28 @@ static unsigned int iosapic_startup_irq(unsigned int irq)
 	return 0;
 }
 
+#ifdef CONFIG_SMP
+static void iosapic_set_affinity_irq(unsigned int irq, cpumask_t dest)
+{
+	struct vector_info *vi = iosapic_get_vector(irq);
+	u32 d0, d1, dummy_d0;
+	unsigned long flags;
+
+	if (cpu_check_affinity(irq, &dest))
+		return;
+
+	vi->txn_addr = txn_affinity_addr(irq, first_cpu(dest));
+
+	spin_lock_irqsave(&iosapic_lock, flags);
+	/* d1 contains the destination CPU, so only want to set that
+	 * entry */
+	iosapic_rd_irt_entry(vi, &d0, &d1);
+	iosapic_set_irt_data(vi, &dummy_d0, &d1);
+	iosapic_wr_irt_entry(vi, d0, d1);
+	spin_unlock_irqrestore(&iosapic_lock, flags);
+}
+#endif
+
 static struct hw_interrupt_type iosapic_interrupt_type = {
 	.typename =	"IO-SAPIC-level",
 	.startup =	iosapic_startup_irq,
@@ -708,7 +730,9 @@ static struct hw_interrupt_type iosapic_interrupt_type = {
 	.disable =	iosapic_disable_irq,
 	.ack =		no_ack_irq,
 	.end =		iosapic_end_irq,
-//	.set_affinity =	iosapic_set_affinity_irq,
+#ifdef CONFIG_SMP
+	.set_affinity =	iosapic_set_affinity_irq,
+#endif
 };
 
 int iosapic_fixup_irq(void *isi_obj, struct pci_dev *pcidev)
@@ -849,28 +873,24 @@ void *iosapic_register(unsigned long hpa)
 		return NULL;
 	}
 
-	isi = (struct iosapic_info *)kmalloc(sizeof(struct iosapic_info), GFP_KERNEL);
+	isi = (struct iosapic_info *)kzalloc(sizeof(struct iosapic_info), GFP_KERNEL);
 	if (!isi) {
 		BUG();
 		return NULL;
 	}
 
-	memset(isi, 0, sizeof(struct iosapic_info));
-
-	isi->addr = ioremap(hpa, 4096);
+	isi->addr = ioremap_nocache(hpa, 4096);
 	isi->isi_hpa = hpa;
 	isi->isi_version = iosapic_rd_version(isi);
 	isi->isi_num_vectors = IOSAPIC_IRDT_MAX_ENTRY(isi->isi_version) + 1;
 
 	vip = isi->isi_vector = (struct vector_info *)
-		kmalloc(sizeof(struct vector_info) * isi->isi_num_vectors, GFP_KERNEL);
+		kzalloc(sizeof(struct vector_info) * isi->isi_num_vectors, GFP_KERNEL);
 	if (vip == NULL) {
 		kfree(isi);
 		return NULL;
 	}
 
-	memset(vip, 0, sizeof(struct vector_info) * isi->isi_num_vectors);
-
 	for (cnt=0; cnt < isi->isi_num_vectors; cnt++, vip++) {
 		vip->irqline = (unsigned char) cnt;
 		vip->iosapic = isi;