irq_domain/powerpc: Use common irq_domain structure instead of irq_host

This patch drops the powerpc-specific irq_host structures and uses the common
irq_domain strucutres defined in linux/irqdomain.h.  It also fixes all
the users to use the new structure names.

Renaming irq_host to irq_domain has been discussed for a long time, and this
patch is a step in the process of generalizing the powerpc virq code to be
usable by all architecture.

An astute reader will notice that this patch actually removes the irq_host
structure instead of renaming it.  This is because the irq_domain structure
already exists in include/linux/irqdomain.h and has the needed data members.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Milton Miller <miltonm@bga.com>
Tested-by: Olof Johansson <olof@lixom.net>

4 files changed, 33 insertions, 33 deletions

diff --git a/arch/powerpc/platforms/cell/axon_msi.c b/arch/powerpc/platforms/cell/axon_msi.c
index 40a6e34793b4..1bfd18a48a7f 100644
--- a/arch/powerpc/platforms/cell/axon_msi.c
+++ b/arch/powerpc/platforms/cell/axon_msi.c
@@ -67,7 +67,7 @@
 
 
 struct axon_msic {
-	struct irq_host *irq_host;
+	struct irq_domain *irq_domain;
 	__le32 *fifo_virt;
 	dma_addr_t fifo_phys;
 	dcr_host_t dcr_host;
@@ -152,7 +152,7 @@ static void axon_msi_cascade(unsigned int irq, struct irq_desc *desc)
 
 static struct axon_msic *find_msi_translator(struct pci_dev *dev)
 {
-	struct irq_host *irq_host;
+	struct irq_domain *irq_domain;
 	struct device_node *dn, *tmp;
 	const phandle *ph;
 	struct axon_msic *msic = NULL;
@@ -184,14 +184,14 @@ static struct axon_msic *find_msi_translator(struct pci_dev *dev)
 		goto out_error;
 	}
 
-	irq_host = irq_find_host(dn);
-	if (!irq_host) {
-		dev_dbg(&dev->dev, "axon_msi: no irq_host found for node %s\n",
+	irq_domain = irq_find_host(dn);
+	if (!irq_domain) {
+		dev_dbg(&dev->dev, "axon_msi: no irq_domain found for node %s\n",
 			dn->full_name);
 		goto out_error;
 	}
 
-	msic = irq_host->host_data;
+	msic = irq_domain->host_data;
 
 out_error:
 	of_node_put(dn);
@@ -280,7 +280,7 @@ static int axon_msi_setup_msi_irqs(struct pci_dev *dev, int nvec, int type)
 	BUILD_BUG_ON(NR_IRQS > 65536);
 
 	list_for_each_entry(entry, &dev->msi_list, list) {
-		virq = irq_create_direct_mapping(msic->irq_host);
+		virq = irq_create_direct_mapping(msic->irq_domain);
 		if (virq == NO_IRQ) {
 			dev_warn(&dev->dev,
 				 "axon_msi: virq allocation failed!\n");
@@ -318,7 +318,7 @@ static struct irq_chip msic_irq_chip = {
 	.name		= "AXON-MSI",
 };
 
-static int msic_host_map(struct irq_host *h, unsigned int virq,
+static int msic_host_map(struct irq_domain *h, unsigned int virq,
 			 irq_hw_number_t hw)
 {
 	irq_set_chip_data(virq, h->host_data);
@@ -327,7 +327,7 @@ static int msic_host_map(struct irq_host *h, unsigned int virq,
 	return 0;
 }
 
-static struct irq_host_ops msic_host_ops = {
+static struct irq_domain_ops msic_host_ops = {
 	.map	= msic_host_map,
 };
 
@@ -337,7 +337,7 @@ static void axon_msi_shutdown(struct platform_device *device)
 	u32 tmp;
 
 	pr_devel("axon_msi: disabling %s\n",
-		  msic->irq_host->of_node->full_name);
+		  msic->irq_domain->of_node->full_name);
 	tmp  = dcr_read(msic->dcr_host, MSIC_CTRL_REG);
 	tmp &= ~MSIC_CTRL_ENABLE & ~MSIC_CTRL_IRQ_ENABLE;
 	msic_dcr_write(msic, MSIC_CTRL_REG, tmp);
@@ -392,15 +392,15 @@ static int axon_msi_probe(struct platform_device *device)
 	}
 	memset(msic->fifo_virt, 0xff, MSIC_FIFO_SIZE_BYTES);
 
-	msic->irq_host = irq_alloc_host(dn, IRQ_HOST_MAP_NOMAP,
+	msic->irq_domain = irq_alloc_host(dn, IRQ_DOMAIN_MAP_NOMAP,
 					NR_IRQS, &msic_host_ops, 0);
-	if (!msic->irq_host) {
-		printk(KERN_ERR "axon_msi: couldn't allocate irq_host for %s\n",
+	if (!msic->irq_domain) {
+		printk(KERN_ERR "axon_msi: couldn't allocate irq_domain for %s\n",
 		       dn->full_name);
 		goto out_free_fifo;
 	}
 
-	msic->irq_host->host_data = msic;
+	msic->irq_domain->host_data = msic;
 
 	irq_set_handler_data(virq, msic);
 	irq_set_chained_handler(virq, axon_msi_cascade);
diff --git a/arch/powerpc/platforms/cell/beat_interrupt.c b/arch/powerpc/platforms/cell/beat_interrupt.c
index 55015e1f6939..21b64cfef5e5 100644
--- a/arch/powerpc/platforms/cell/beat_interrupt.c
+++ b/arch/powerpc/platforms/cell/beat_interrupt.c
@@ -34,7 +34,7 @@ static DEFINE_RAW_SPINLOCK(beatic_irq_mask_lock);
 static uint64_t	beatic_irq_mask_enable[(MAX_IRQS+255)/64];
 static uint64_t	beatic_irq_mask_ack[(MAX_IRQS+255)/64];
 
-static struct irq_host *beatic_host;
+static struct irq_domain *beatic_host;
 
 /*
  * In this implementation, "virq" == "IRQ plug number",
@@ -122,7 +122,7 @@ static struct irq_chip beatic_pic = {
  *
  * Note that the number (virq) is already assigned at upper layer.
  */
-static void beatic_pic_host_unmap(struct irq_host *h, unsigned int virq)
+static void beatic_pic_host_unmap(struct irq_domain *h, unsigned int virq)
 {
 	beat_destruct_irq_plug(virq);
 }
@@ -133,7 +133,7 @@ static void beatic_pic_host_unmap(struct irq_host *h, unsigned int virq)
  *
  * Note that the number (virq) is already assigned at upper layer.
  */
-static int beatic_pic_host_map(struct irq_host *h, unsigned int virq,
+static int beatic_pic_host_map(struct irq_domain *h, unsigned int virq,
 			       irq_hw_number_t hw)
 {
 	int64_t	err;
@@ -154,7 +154,7 @@ static int beatic_pic_host_map(struct irq_host *h, unsigned int virq,
  * Called from irq_create_of_mapping() only.
  * Note: We have only 1 entry to translate.
  */
-static int beatic_pic_host_xlate(struct irq_host *h, struct device_node *ct,
+static int beatic_pic_host_xlate(struct irq_domain *h, struct device_node *ct,
 				 const u32 *intspec, unsigned int intsize,
 				 irq_hw_number_t *out_hwirq,
 				 unsigned int *out_flags)
@@ -166,13 +166,13 @@ static int beatic_pic_host_xlate(struct irq_host *h, struct device_node *ct,
 	return 0;
 }
 
-static int beatic_pic_host_match(struct irq_host *h, struct device_node *np)
+static int beatic_pic_host_match(struct irq_domain *h, struct device_node *np)
 {
 	/* Match all */
 	return 1;
 }
 
-static struct irq_host_ops beatic_pic_host_ops = {
+static struct irq_domain_ops beatic_pic_host_ops = {
 	.map = beatic_pic_host_map,
 	.unmap = beatic_pic_host_unmap,
 	.xlate = beatic_pic_host_xlate,
@@ -239,7 +239,7 @@ void __init beatic_init_IRQ(void)
 	ppc_md.get_irq = beatic_get_irq;
 
 	/* Allocate an irq host */
-	beatic_host = irq_alloc_host(NULL, IRQ_HOST_MAP_NOMAP, 0,
+	beatic_host = irq_alloc_host(NULL, IRQ_DOMAIN_MAP_NOMAP, 0,
 				     &beatic_pic_host_ops,
 					 0);
 	BUG_ON(beatic_host == NULL);
diff --git a/arch/powerpc/platforms/cell/interrupt.c b/arch/powerpc/platforms/cell/interrupt.c
index 96a433dd2d64..6888475e7c62 100644
--- a/arch/powerpc/platforms/cell/interrupt.c
+++ b/arch/powerpc/platforms/cell/interrupt.c
@@ -56,7 +56,7 @@ struct iic {
 
 static DEFINE_PER_CPU(struct iic, cpu_iic);
 #define IIC_NODE_COUNT	2
-static struct irq_host *iic_host;
+static struct irq_domain *iic_host;
 
 /* Convert between "pending" bits and hw irq number */
 static irq_hw_number_t iic_pending_to_hwnum(struct cbe_iic_pending_bits bits)
@@ -186,7 +186,7 @@ void iic_message_pass(int cpu, int msg)
 	out_be64(&per_cpu(cpu_iic, cpu).regs->generate, (0xf - msg) << 4);
 }
 
-struct irq_host *iic_get_irq_host(int node)
+struct irq_domain *iic_get_irq_host(int node)
 {
 	return iic_host;
 }
@@ -222,13 +222,13 @@ void iic_request_IPIs(void)
 #endif /* CONFIG_SMP */
 
 
-static int iic_host_match(struct irq_host *h, struct device_node *node)
+static int iic_host_match(struct irq_domain *h, struct device_node *node)
 {
 	return of_device_is_compatible(node,
 				    "IBM,CBEA-Internal-Interrupt-Controller");
 }
 
-static int iic_host_map(struct irq_host *h, unsigned int virq,
+static int iic_host_map(struct irq_domain *h, unsigned int virq,
 			irq_hw_number_t hw)
 {
 	switch (hw & IIC_IRQ_TYPE_MASK) {
@@ -245,7 +245,7 @@ static int iic_host_map(struct irq_host *h, unsigned int virq,
 	return 0;
 }
 
-static int iic_host_xlate(struct irq_host *h, struct device_node *ct,
+static int iic_host_xlate(struct irq_domain *h, struct device_node *ct,
 			   const u32 *intspec, unsigned int intsize,
 			   irq_hw_number_t *out_hwirq, unsigned int *out_flags)
 
@@ -285,7 +285,7 @@ static int iic_host_xlate(struct irq_host *h, struct device_node *ct,
 	return 0;
 }
 
-static struct irq_host_ops iic_host_ops = {
+static struct irq_domain_ops iic_host_ops = {
 	.match = iic_host_match,
 	.map = iic_host_map,
 	.xlate = iic_host_xlate,
@@ -378,7 +378,7 @@ static int __init setup_iic(void)
 void __init iic_init_IRQ(void)
 {
 	/* Setup an irq host data structure */
-	iic_host = irq_alloc_host(NULL, IRQ_HOST_MAP_LINEAR, IIC_SOURCE_COUNT,
+	iic_host = irq_alloc_host(NULL, IRQ_DOMAIN_MAP_LINEAR, IIC_SOURCE_COUNT,
 				  &iic_host_ops, IIC_IRQ_INVALID);
 	BUG_ON(iic_host == NULL);
 	irq_set_default_host(iic_host);
diff --git a/arch/powerpc/platforms/cell/spider-pic.c b/arch/powerpc/platforms/cell/spider-pic.c
index 442c28c00f88..1f935a772ef8 100644
--- a/arch/powerpc/platforms/cell/spider-pic.c
+++ b/arch/powerpc/platforms/cell/spider-pic.c
@@ -62,7 +62,7 @@ enum {
 #define SPIDER_IRQ_INVALID	63
 
 struct spider_pic {
-	struct irq_host		*host;
+	struct irq_domain		*host;
 	void __iomem		*regs;
 	unsigned int		node_id;
 };
@@ -168,7 +168,7 @@ static struct irq_chip spider_pic = {
 	.irq_set_type = spider_set_irq_type,
 };
 
-static int spider_host_map(struct irq_host *h, unsigned int virq,
+static int spider_host_map(struct irq_domain *h, unsigned int virq,
 			irq_hw_number_t hw)
 {
 	irq_set_chip_data(virq, h->host_data);
@@ -180,7 +180,7 @@ static int spider_host_map(struct irq_host *h, unsigned int virq,
 	return 0;
 }
 
-static int spider_host_xlate(struct irq_host *h, struct device_node *ct,
+static int spider_host_xlate(struct irq_domain *h, struct device_node *ct,
 			   const u32 *intspec, unsigned int intsize,
 			   irq_hw_number_t *out_hwirq, unsigned int *out_flags)
 
@@ -194,7 +194,7 @@ static int spider_host_xlate(struct irq_host *h, struct device_node *ct,
 	return 0;
 }
 
-static struct irq_host_ops spider_host_ops = {
+static struct irq_domain_ops spider_host_ops = {
 	.map = spider_host_map,
 	.xlate = spider_host_xlate,
 };
@@ -299,7 +299,7 @@ static void __init spider_init_one(struct device_node *of_node, int chip,
 		panic("spider_pic: can't map registers !");
 
 	/* Allocate a host */
-	pic->host = irq_alloc_host(of_node, IRQ_HOST_MAP_LINEAR,
+	pic->host = irq_alloc_host(of_node, IRQ_DOMAIN_MAP_LINEAR,
 				   SPIDER_SRC_COUNT, &spider_host_ops,
 				   SPIDER_IRQ_INVALID);
 	if (pic->host == NULL)