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Date: Sun, 9 Nov 2014 23:10:37 +0800
From: Jiang Liu <jiang.liu@...ux.intel.com>
To: Bjorn Helgaas <bhelgaas@...gle.com>,
Benjamin Herrenschmidt <benh@...nel.crashing.org>,
Thomas Gleixner <tglx@...utronix.de>,
Ingo Molnar <mingo@...hat.com>,
"H. Peter Anvin" <hpa@...or.com>,
"Rafael J. Wysocki" <rjw@...ysocki.net>,
Randy Dunlap <rdunlap@...radead.org>,
Yinghai Lu <yinghai@...nel.org>,
Borislav Petkov <bp@...en8.de>,
Grant Likely <grant.likely@...aro.org>,
Marc Zyngier <marc.zyngier@....com>,
Yingjoe Chen <yingjoe.chen@...iatek.com>, x86@...nel.org,
Matthias Brugger <matthias.bgg@...il.com>,
Jiang Liu <jiang.liu@...ux.intel.com>,
Yijing Wang <wangyijing@...wei.com>,
Alexander Gordeev <agordeev@...hat.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
Andrew Morton <akpm@...ux-foundation.org>,
Tony Luck <tony.luck@...el.com>,
Joerg Roedel <joro@...tes.org>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org,
linux-acpi@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: [RFC Part4 v1 15/17] PCI, MSI: Clean up unused irqdomain related code
PCI MSI has been converted to use common MSI code, so kill unsued code.
Signed-off-by: Jiang Liu <jiang.liu@...ux.intel.com>
---
arch/x86/kernel/apic/msi.c | 9 +------
drivers/pci/msi.c | 62 ++------------------------------------------
include/linux/msi.h | 13 ++--------
kernel/irq/msi.c | 6 +++--
4 files changed, 9 insertions(+), 81 deletions(-)
diff --git a/arch/x86/kernel/apic/msi.c b/arch/x86/kernel/apic/msi.c
index 6bd339ed59f5..15168893fcc3 100644
--- a/arch/x86/kernel/apic/msi.c
+++ b/arch/x86/kernel/apic/msi.c
@@ -89,7 +89,7 @@ int native_setup_msi_irqs(struct pci_dev *dev, int nvec, int type)
if (domain == NULL)
return -ENOSYS;
- return msi_irq_domain_alloc_irqs(domain, type, dev, &info);
+ return pci_msi_irq_domain_alloc_irqs(domain, type, dev, &info);
}
void native_teardown_msi_irq(unsigned int irq)
@@ -97,13 +97,6 @@ void native_teardown_msi_irq(unsigned int irq)
irq_domain_free_irqs(irq, 1);
}
-irq_hw_number_t arch_msi_irq_domain_get_hwirq(void *arg)
-{
- struct irq_alloc_info *info = arg;
-
- return info->msi_hwirq;
-}
-
static void pci_msi_generate_hwirq(struct msi_domain_info *minfo, void *arg,
struct msi_desc *desc)
{
diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c
index adfabc9add24..1c5c7720b74c 100644
--- a/drivers/pci/msi.c
+++ b/drivers/pci/msi.c
@@ -1098,66 +1098,8 @@ irq_hw_number_t pci_msi_calc_hwirq(struct pci_dev *dev, struct msi_desc *desc)
(pci_domain_nr(dev->bus) & 0xFFFFFFFF) << 27;
}
-static int msi_domain_alloc(struct irq_domain *domain, unsigned int virq,
- unsigned int nr_irqs, void *arg)
-{
- int i, ret;
- irq_hw_number_t hwirq = arch_msi_irq_domain_get_hwirq(arg);
-
- if (irq_find_mapping(domain, hwirq) > 0)
- return -EEXIST;
-
- ret = irq_domain_alloc_irqs_parent(domain, virq, nr_irqs, arg);
- if (ret < 0)
- return ret;
-
- for (i = 0; i < nr_irqs; i++) {
- irq_domain_set_hwirq_and_chip(domain, virq + i, hwirq + i,
- domain->host_data, NULL);
- __irq_set_handler(virq + i, handle_edge_irq, 0, "edge");
- }
-
- return ret;
-}
-
-static void msi_domain_free(struct irq_domain *domain, unsigned int virq,
- unsigned int nr_irqs)
-{
- int i;
-
- for (i = 0; i < nr_irqs; i++) {
- struct msi_desc *desc = irq_get_msi_desc(virq);
-
- if (desc)
- desc->irq = 0;
- }
- irq_domain_free_irqs_top(domain, virq, nr_irqs);
-}
-
-static struct irq_domain_ops msi_domain_ops = {
- .alloc = msi_domain_alloc,
- .free = msi_domain_free,
- .activate = msi_domain_activate,
- .deactivate = msi_domain_deactivate,
-};
-
-struct irq_domain *pci_msi_create_irq_domain(struct device_node *of_node,
- struct irq_chip *chip,
- struct irq_domain *parent)
-{
- struct irq_domain *domain;
-
- domain = irq_domain_add_tree(of_node, &msi_domain_ops, chip);
- if (!domain)
- return NULL;
-
- domain->parent = parent;
-
- return domain;
-}
-
-int msi_irq_domain_alloc_irqs(struct irq_domain *domain, int type,
- struct pci_dev *dev, void *arg)
+int pci_msi_irq_domain_alloc_irqs(struct irq_domain *domain, int type,
+ struct pci_dev *dev, void *arg)
{
int i, virq;
struct msi_desc *desc;
diff --git a/include/linux/msi.h b/include/linux/msi.h
index 7b102148c4c6..0c1446e48572 100644
--- a/include/linux/msi.h
+++ b/include/linux/msi.h
@@ -73,9 +73,6 @@ struct msi_domain_info {
int msi_domain_set_affinity(struct irq_data *data, const struct cpumask *mask,
bool force);
-void msi_domain_activate(struct irq_domain *domain, struct irq_data *irq_data);
-void msi_domain_deactivate(struct irq_domain *domain,
- struct irq_data *irq_data);
struct irq_domain *msi_create_irq_domain(struct device_node *of_node,
struct msi_domain_info *info,
struct irq_domain *parent);
@@ -117,16 +114,10 @@ struct msi_chip {
};
#ifdef CONFIG_PCI_MSI_IRQ_DOMAIN
-struct irq_domain *pci_msi_create_irq_domain(struct device_node *of_node,
- struct irq_chip *chip,
- struct irq_domain *parent);
void pci_msi_write_msg(struct irq_data *irq_data, struct msi_msg *msg);
-int msi_irq_domain_alloc_irqs(struct irq_domain *domain, int type,
- struct pci_dev *dev, void *arg);
+int pci_msi_irq_domain_alloc_irqs(struct irq_domain *domain, int type,
+ struct pci_dev *dev, void *arg);
irq_hw_number_t pci_msi_calc_hwirq(struct pci_dev *dev, struct msi_desc *desc);
-
-irq_hw_number_t arch_msi_irq_domain_get_hwirq(void *arg);
-void arch_msi_irq_domain_set_hwirq(void *arg, irq_hw_number_t hwirq);
#endif /* CONFIG_PCI_MSI_IRQ_DOMAIN */
#endif /* CONFIG_PCI_MSI */
diff --git a/kernel/irq/msi.c b/kernel/irq/msi.c
index 85a50254d815..4f9f56e75804 100644
--- a/kernel/irq/msi.c
+++ b/kernel/irq/msi.c
@@ -43,7 +43,8 @@ int msi_domain_set_affinity(struct irq_data *irq_data,
return ret;
}
-void msi_domain_activate(struct irq_domain *domain, struct irq_data *irq_data)
+static void msi_domain_activate(struct irq_domain *domain,
+ struct irq_data *irq_data)
{
struct msi_msg msg;
@@ -51,7 +52,8 @@ void msi_domain_activate(struct irq_domain *domain, struct irq_data *irq_data)
irq_chip_write_msi_msg(irq_data, &msg);
}
-void msi_domain_deactivate(struct irq_domain *domain, struct irq_data *irq_data)
+static void msi_domain_deactivate(struct irq_domain *domain,
+ struct irq_data *irq_data)
{
struct msi_msg msg;
--
1.7.10.4
--
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