From: Jiang Liu <jiang.liu@linux.intel.com>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>,
"Rafael J. Wysocki" <rjw@rjwysocki.net>,
Bjorn Helgaas <bhelgaas@google.com>,
Randy Dunlap <rdunlap@infradead.org>,
Yinghai Lu <yinghai@kernel.org>, Borislav Petkov <bp@alien8.de>,
Grant Likely <grant.likely@linaro.org>,
Marc Zyngier <marc.zyngier@arm.com>
Cc: Jiang Liu <jiang.liu@linux.intel.com>,
Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
Andrew Morton <akpm@linux-foundation.org>,
Tony Luck <tony.luck@intel.com>, Joerg Roedel <joro@8bytes.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
x86@kernel.org, linux-kernel@vger.kernel.org,
linux-pci@vger.kernel.org, linux-acpi@vger.kernel.org,
linux-arm-kernel@lists.infradead.org
Subject: [RFC Part2 v1 20/21] x86: irq_remapping: Clean up unused MSI related code
Date: Thu, 11 Sep 2014 22:03:47 +0800 [thread overview]
Message-ID: <1410444228-3134-21-git-send-email-jiang.liu@linux.intel.com> (raw)
In-Reply-To: <1410444228-3134-1-git-send-email-jiang.liu@linux.intel.com>
Now MSI interrupt has been converted to new hierarchy irqdomain
interfaces, so kill legacy MSI related code and interfaces.
Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
---
arch/x86/include/asm/irq_remapping.h | 13 ---
arch/x86/include/asm/pci.h | 5 --
arch/x86/kernel/x86_init.c | 2 -
drivers/iommu/irq_remapping.c | 153 ----------------------------------
drivers/iommu/irq_remapping.h | 15 ----
5 files changed, 188 deletions(-)
diff --git a/arch/x86/include/asm/irq_remapping.h b/arch/x86/include/asm/irq_remapping.h
index 440053ca7515..8dc1d06f74d9 100644
--- a/arch/x86/include/asm/irq_remapping.h
+++ b/arch/x86/include/asm/irq_remapping.h
@@ -48,10 +48,6 @@ extern int setup_ioapic_remapped_entry(int irq,
int vector,
struct io_apic_irq_attr *attr);
extern void free_remapped_irq(int irq);
-extern void compose_remapped_msi_msg(struct pci_dev *pdev,
- unsigned int irq, unsigned int dest,
- struct msi_msg *msg, u8 hpet_id);
-extern int setup_hpet_msi_remapped(unsigned int irq, unsigned int id);
extern void panic_if_irq_remap(const char *msg);
extern bool setup_remapped_irq(int irq,
struct irq_cfg *cfg,
@@ -100,15 +96,6 @@ static inline int setup_ioapic_remapped_entry(int irq,
return -ENODEV;
}
static inline void free_remapped_irq(int irq) { }
-static inline void compose_remapped_msi_msg(struct pci_dev *pdev,
- unsigned int irq, unsigned int dest,
- struct msi_msg *msg, u8 hpet_id)
-{
-}
-static inline int setup_hpet_msi_remapped(unsigned int irq, unsigned int id)
-{
- return -ENODEV;
-}
static inline void panic_if_irq_remap(const char *msg)
{
diff --git a/arch/x86/include/asm/pci.h b/arch/x86/include/asm/pci.h
index 4e370a5d8117..d8c80ff32e8c 100644
--- a/arch/x86/include/asm/pci.h
+++ b/arch/x86/include/asm/pci.h
@@ -96,15 +96,10 @@ extern void pci_iommu_alloc(void);
#ifdef CONFIG_PCI_MSI
/* implemented in arch/x86/kernel/apic/io_apic. */
struct msi_desc;
-void native_compose_msi_msg(struct pci_dev *pdev, unsigned int irq,
- unsigned int dest, struct msi_msg *msg, u8 hpet_id);
int native_setup_msi_irqs(struct pci_dev *dev, int nvec, int type);
void native_teardown_msi_irq(unsigned int irq);
void native_restore_msi_irqs(struct pci_dev *dev);
-int setup_msi_irq(struct pci_dev *dev, struct msi_desc *msidesc,
- unsigned int irq_base, unsigned int irq_offset);
#else
-#define native_compose_msi_msg NULL
#define native_setup_msi_irqs NULL
#define native_teardown_msi_irq NULL
#endif
diff --git a/arch/x86/kernel/x86_init.c b/arch/x86/kernel/x86_init.c
index e48b674639cc..814fcbadaad1 100644
--- a/arch/x86/kernel/x86_init.c
+++ b/arch/x86/kernel/x86_init.c
@@ -111,11 +111,9 @@ EXPORT_SYMBOL_GPL(x86_platform);
#if defined(CONFIG_PCI_MSI)
struct x86_msi_ops x86_msi = {
.setup_msi_irqs = native_setup_msi_irqs,
- .compose_msi_msg = native_compose_msi_msg,
.teardown_msi_irq = native_teardown_msi_irq,
.teardown_msi_irqs = default_teardown_msi_irqs,
.restore_msi_irqs = default_restore_msi_irqs,
- .setup_hpet_msi = default_setup_hpet_msi,
.msi_mask_irq = default_msi_mask_irq,
.msix_mask_irq = default_msix_mask_irq,
};
diff --git a/drivers/iommu/irq_remapping.c b/drivers/iommu/irq_remapping.c
index bda0d8e73fde..d72094e01dec 100644
--- a/drivers/iommu/irq_remapping.c
+++ b/drivers/iommu/irq_remapping.c
@@ -25,9 +25,6 @@ int no_x2apic_optout;
static struct irq_remap_ops *remap_ops;
-static int msi_alloc_remapped_irq(struct pci_dev *pdev, int irq, int nvec);
-static int msi_setup_remapped_irq(struct pci_dev *pdev, unsigned int irq,
- int index, int sub_handle);
static int set_remapped_irq_affinity(struct irq_data *data,
const struct cpumask *mask,
bool force);
@@ -50,117 +47,6 @@ static void irq_remapping_disable_io_apic(void)
disconnect_bsp_APIC(0);
}
-#ifndef CONFIG_GENERIC_IRQ_LEGACY_ALLOC_HWIRQ
-static unsigned int irq_alloc_hwirqs(int cnt, int node)
-{
- return irq_domain_alloc_irqs(NULL, -1, cnt, node, NULL);
-}
-
-static void irq_free_hwirqs(unsigned int from, int cnt)
-{
- irq_domain_free_irqs(from, cnt);
-}
-#endif
-
-static int do_setup_msi_irqs(struct pci_dev *dev, int nvec)
-{
- int ret, sub_handle, nvec_pow2, index = 0;
- unsigned int irq;
- struct msi_desc *msidesc;
-
- WARN_ON(!list_is_singular(&dev->msi_list));
- msidesc = list_entry(dev->msi_list.next, struct msi_desc, list);
- WARN_ON(msidesc->irq);
- WARN_ON(msidesc->msi_attrib.multiple);
- WARN_ON(msidesc->nvec_used);
-
- irq = irq_alloc_hwirqs(nvec, dev_to_node(&dev->dev));
- if (irq == 0)
- return -ENOSPC;
-
- nvec_pow2 = __roundup_pow_of_two(nvec);
- msidesc->nvec_used = nvec;
- msidesc->msi_attrib.multiple = ilog2(nvec_pow2);
- for (sub_handle = 0; sub_handle < nvec; sub_handle++) {
- if (!sub_handle) {
- index = msi_alloc_remapped_irq(dev, irq, nvec_pow2);
- if (index < 0) {
- ret = index;
- goto error;
- }
- } else {
- ret = msi_setup_remapped_irq(dev, irq + sub_handle,
- index, sub_handle);
- if (ret < 0)
- goto error;
- }
- ret = setup_msi_irq(dev, msidesc, irq, sub_handle);
- if (ret < 0)
- goto error;
- }
- return 0;
-
-error:
- irq_free_hwirqs(irq, nvec);
-
- /*
- * Restore altered MSI descriptor fields and prevent just destroyed
- * IRQs from tearing down again in default_teardown_msi_irqs()
- */
- msidesc->irq = 0;
- msidesc->nvec_used = 0;
- msidesc->msi_attrib.multiple = 0;
-
- return ret;
-}
-
-static int do_setup_msix_irqs(struct pci_dev *dev, int nvec)
-{
- int node, ret, sub_handle, index = 0;
- struct msi_desc *msidesc;
- unsigned int irq;
-
- node = dev_to_node(&dev->dev);
- sub_handle = 0;
-
- list_for_each_entry(msidesc, &dev->msi_list, list) {
-
- irq = irq_alloc_hwirqs(1, node);
- if (irq == 0)
- return -1;
-
- if (sub_handle == 0)
- ret = index = msi_alloc_remapped_irq(dev, irq, nvec);
- else
- ret = msi_setup_remapped_irq(dev, irq, index, sub_handle);
-
- if (ret < 0)
- goto error;
-
- ret = setup_msi_irq(dev, msidesc, irq, 0);
- if (ret < 0)
- goto error;
-
- sub_handle += 1;
- irq += 1;
- }
-
- return 0;
-
-error:
- irq_free_hwirqs(irq, 1);
- return ret;
-}
-
-static int irq_remapping_setup_msi_irqs(struct pci_dev *dev,
- int nvec, int type)
-{
- if (type == PCI_CAP_ID_MSI)
- return do_setup_msi_irqs(dev, nvec);
- else
- return do_setup_msix_irqs(dev, nvec);
-}
-
static void eoi_ioapic_pin_remapped(int apic, int pin, int vector)
{
/*
@@ -178,8 +64,6 @@ static void __init irq_remapping_modify_x86_ops(void)
x86_io_apic_ops.set_affinity = set_remapped_irq_affinity;
x86_io_apic_ops.setup_entry = setup_ioapic_remapped_entry;
x86_io_apic_ops.eoi_ioapic_pin = eoi_ioapic_pin_remapped;
- x86_msi.setup_hpet_msi = setup_hpet_msi_remapped;
- x86_msi.compose_msi_msg = compose_remapped_msi_msg;
}
static __init int setup_nointremap(char *str)
@@ -326,43 +210,6 @@ void free_remapped_irq(int irq)
remap_ops->free_irq(irq);
}
-void compose_remapped_msi_msg(struct pci_dev *pdev,
- unsigned int irq, unsigned int dest,
- struct msi_msg *msg, u8 hpet_id)
-{
- struct irq_cfg *cfg = irq_cfg(irq);
-
- if (!irq_remapped(cfg))
- native_compose_msi_msg(pdev, irq, dest, msg, hpet_id);
- else if (remap_ops && remap_ops->compose_msi_msg)
- remap_ops->compose_msi_msg(pdev, irq, dest, msg, hpet_id);
-}
-
-static int msi_alloc_remapped_irq(struct pci_dev *pdev, int irq, int nvec)
-{
- if (!remap_ops || !remap_ops->msi_alloc_irq)
- return -ENODEV;
-
- return remap_ops->msi_alloc_irq(pdev, irq, nvec);
-}
-
-static int msi_setup_remapped_irq(struct pci_dev *pdev, unsigned int irq,
- int index, int sub_handle)
-{
- if (!remap_ops || !remap_ops->msi_setup_irq)
- return -ENODEV;
-
- return remap_ops->msi_setup_irq(pdev, irq, index, sub_handle);
-}
-
-int setup_hpet_msi_remapped(unsigned int irq, unsigned int id)
-{
- if (!remap_ops || !remap_ops->setup_hpet_msi)
- return -ENODEV;
-
- return remap_ops->setup_hpet_msi(irq, id);
-}
-
void panic_if_irq_remap(const char *msg)
{
if (irq_remapping_enabled)
diff --git a/drivers/iommu/irq_remapping.h b/drivers/iommu/irq_remapping.h
index 6e46074f06d0..474e20be528f 100644
--- a/drivers/iommu/irq_remapping.h
+++ b/drivers/iommu/irq_remapping.h
@@ -70,21 +70,6 @@ struct irq_remap_ops {
/* Free an IRQ */
int (*free_irq)(int);
- /* Create MSI msg to use for interrupt remapping */
- void (*compose_msi_msg)(struct pci_dev *,
- unsigned int, unsigned int,
- struct msi_msg *, u8);
-
- /* Allocate remapping resources for MSI */
- int (*msi_alloc_irq)(struct pci_dev *, int, int);
-
- /* Setup the remapped MSI irq */
- int (*msi_setup_irq)(struct pci_dev *, unsigned int, int, int);
-
- /* Setup interrupt remapping for an HPET MSI */
- int (*setup_hpet_msi)(unsigned int, unsigned int);
-
- /* Get the irqdomain associated the IOMMU device */
struct irq_domain *(*get_ir_irq_domain)(struct irq_alloc_info *);
/* Get the MSI irqdomain associated with the IOMMU device */
--
1.7.10.4
next prev parent reply other threads:[~2014-09-11 14:03 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-11 14:03 [RFC Part2 v1 00/21] Enable hierarchy irqdomian on x86 platforms Jiang Liu
2014-09-11 14:03 ` [RFC Part2 v1 01/21] irqdomain: Introduce new interfaces to support hierarchy irqdomains Jiang Liu
2014-09-16 17:43 ` Thomas Gleixner
2014-09-18 7:28 ` Jiang Liu
2014-09-22 8:17 ` [Patch] " Jiang Liu
2014-09-22 17:30 ` Randy Dunlap
2014-09-24 5:26 ` Jiang Liu
[not found] ` <1411465402.8922.126.camel@mtksdaap41>
2014-09-24 5:55 ` Jiang Liu
[not found] ` <1411030087.14746.2.camel@mtksdaap41>
2014-09-18 8:58 ` [RFC Part2 v1 01/21] " Jiang Liu
2014-09-24 6:55 ` Yasuaki Ishimatsu
2014-09-24 7:23 ` Jiang Liu
2014-09-11 14:03 ` [RFC Part2 v1 02/21] genirq: Introduce helper functions to support stacked irq_chip Jiang Liu
2014-09-16 17:45 ` Thomas Gleixner
2014-09-17 3:07 ` Jiang Liu
2014-09-17 20:58 ` Thomas Gleixner
2014-09-18 6:14 ` Jiang Liu
2014-09-11 14:03 ` [RFC Part2 v1 03/21] x86, irq: Save destination CPU ID in irq_cfg Jiang Liu
2014-09-16 17:47 ` Thomas Gleixner
2014-09-17 2:24 ` Jiang Liu
2014-09-11 14:03 ` [RFC Part2 v1 04/21] x86, irq: Use hierarchy irqdomain to manage CPU interrupt vectors Jiang Liu
2014-09-11 14:03 ` [RFC Part2 v1 05/21] x86, hpet: Use new irqdomain interfaces to allocate/free IRQ Jiang Liu
2014-09-11 14:03 ` [RFC Part2 v1 06/21] x86, MSI: " Jiang Liu
2014-09-11 14:03 ` [RFC Part2 v1 07/21] x86, uv: " Jiang Liu
2014-09-11 14:03 ` [RFC Part2 v1 08/21] x86, htirq: " Jiang Liu
2014-09-11 14:03 ` [RFC Part2 v1 09/21] x86, dmar: " Jiang Liu
2014-09-11 14:03 ` [RFC Part2 v1 10/21] x86: irq_remapping: Introduce new interfaces to support hierarchy irqdomain Jiang Liu
2014-09-11 14:03 ` [RFC Part2 v1 11/21] iommu/vt-d: Change prototypes to prepare for enabling " Jiang Liu
2014-09-11 14:03 ` [RFC Part2 v1 12/21] iommu/vt-d: Enhance Intel IR driver to suppport " Jiang Liu
2014-09-11 14:03 ` [RFC Part2 v1 13/21] iommu/amd: Enhance AMD " Jiang Liu
2014-09-11 14:03 ` [RFC Part2 v1 14/21] x86, hpet: Enhance HPET IRQ to support " Jiang Liu
2014-09-16 18:31 ` Thomas Gleixner
2014-09-17 5:16 ` Jiang Liu
2014-09-11 14:03 ` [RFC Part2 v1 15/21] x86, MSI: Use hierarchy irqdomain to manage MSI interrupts Jiang Liu
2014-09-11 14:17 ` Ni, Xun
2014-09-11 14:29 ` Jiang Liu
2014-09-11 14:03 ` [RFC Part2 v1 16/21] x86, irq: Directly call native_compose_msi_msg() for DMAR IRQ Jiang Liu
2014-09-11 14:03 ` [RFC Part2 v1 17/21] x86, htirq: Use hierarchy irqdomain to manage Hypertransport interrupts Jiang Liu
2014-09-11 14:03 ` [RFC Part2 v1 18/21] iommu/vt-d: Clean up unused MSI related code Jiang Liu
2014-09-11 14:03 ` [RFC Part2 v1 19/21] iommu/amd: " Jiang Liu
2014-09-11 14:03 ` Jiang Liu [this message]
2014-09-11 14:03 ` [RFC Part2 v1 21/21] x86, irq: Clean up unused MSI related code and interfaces Jiang Liu
2014-09-24 7:59 ` [RFC Part2 v1 00/21] Enable hierarchy irqdomian on x86 platforms Yasuaki Ishimatsu
2014-09-24 8:10 ` Jiang Liu
2014-09-24 8:12 ` Yasuaki Ishimatsu
2014-09-24 19:25 ` Thomas Gleixner
2014-09-25 8:15 ` Yasuaki Ishimatsu
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