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 21/21] x86, irq: Clean up unused MSI related code and interfaces
Date: Thu, 11 Sep 2014 22:03:48 +0800 [thread overview]
Message-ID: <1410444228-3134-22-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/hpet.h | 9 ----
arch/x86/include/asm/x86_init.h | 4 --
arch/x86/kernel/apic/msi.c | 91 +++------------------------------------
3 files changed, 6 insertions(+), 98 deletions(-)
diff --git a/arch/x86/include/asm/hpet.h b/arch/x86/include/asm/hpet.h
index e87e9faf87a9..5fa9fb0f8809 100644
--- a/arch/x86/include/asm/hpet.h
+++ b/arch/x86/include/asm/hpet.h
@@ -85,15 +85,6 @@ extern struct irq_domain *hpet_create_irq_domain(int hpet_id);
extern int hpet_assign_irq(struct irq_domain *domain,
struct hpet_dev *dev, int dev_num);
-#ifdef CONFIG_PCI_MSI
-extern int default_setup_hpet_msi(unsigned int irq, unsigned int id);
-#else
-static inline int default_setup_hpet_msi(unsigned int irq, unsigned int id)
-{
- return -EINVAL;
-}
-#endif
-
#ifdef CONFIG_HPET_EMULATE_RTC
#include <linux/interrupt.h>
diff --git a/arch/x86/include/asm/x86_init.h b/arch/x86/include/asm/x86_init.h
index e45e4da96bf1..9b53cb2acfbb 100644
--- a/arch/x86/include/asm/x86_init.h
+++ b/arch/x86/include/asm/x86_init.h
@@ -176,13 +176,9 @@ struct msi_desc;
struct x86_msi_ops {
int (*setup_msi_irqs)(struct pci_dev *dev, int nvec, int type);
- void (*compose_msi_msg)(struct pci_dev *dev, unsigned int irq,
- unsigned int dest, struct msi_msg *msg,
- u8 hpet_id);
void (*teardown_msi_irq)(unsigned int irq);
void (*teardown_msi_irqs)(struct pci_dev *dev);
void (*restore_msi_irqs)(struct pci_dev *dev);
- int (*setup_hpet_msi)(unsigned int irq, unsigned int id);
u32 (*msi_mask_irq)(struct msi_desc *desc, u32 mask, u32 flag);
u32 (*msix_mask_irq)(struct msi_desc *desc, u32 flag);
};
diff --git a/arch/x86/kernel/apic/msi.c b/arch/x86/kernel/apic/msi.c
index 4f2a349ccef0..69129dbb4604 100644
--- a/arch/x86/kernel/apic/msi.c
+++ b/arch/x86/kernel/apic/msi.c
@@ -25,16 +25,12 @@
static struct irq_domain *msi_default_domain;
-void native_compose_msi_msg(struct pci_dev *pdev,
- unsigned int irq, unsigned int dest,
- struct msi_msg *msg, u8 hpet_id)
+static void native_compose_msi_msg(struct irq_cfg *cfg, struct msi_msg *msg)
{
- struct irq_cfg *cfg = irq_cfg(irq);
-
msg->address_hi = MSI_ADDR_BASE_HI;
if (x2apic_enabled())
- msg->address_hi |= MSI_ADDR_EXT_DEST_ID(dest);
+ msg->address_hi |= MSI_ADDR_EXT_DEST_ID(cfg->dest_apicid);
msg->address_lo =
MSI_ADDR_BASE_LO |
@@ -44,7 +40,7 @@ void native_compose_msi_msg(struct pci_dev *pdev,
((apic->irq_delivery_mode != dest_LowestPrio) ?
MSI_ADDR_REDIRECTION_CPU :
MSI_ADDR_REDIRECTION_LOWPRI) |
- MSI_ADDR_DEST_ID(dest);
+ MSI_ADDR_DEST_ID(cfg->dest_apicid);
msg->data =
MSI_DATA_TRIGGER_EDGE |
@@ -55,31 +51,6 @@ void native_compose_msi_msg(struct pci_dev *pdev,
MSI_DATA_VECTOR(cfg->vector);
}
-static int msi_compose_msg(struct pci_dev *pdev, unsigned int irq,
- struct msi_msg *msg, u8 hpet_id)
-{
- struct irq_cfg *cfg;
- int err;
- unsigned dest;
-
- if (disable_apic)
- return -ENXIO;
-
- cfg = irq_cfg(irq);
- err = assign_irq_vector(irq, cfg, apic->target_cpus());
- if (err)
- return err;
-
- err = apic->cpu_mask_to_apicid_and(cfg->domain,
- apic->target_cpus(), &dest);
- if (err)
- return err;
-
- x86_msi.compose_msi_msg(pdev, irq, dest, msg, hpet_id);
-
- return 0;
-}
-
static bool msi_remapped(struct irq_domain *domain)
{
return domain->host_data != NULL;
@@ -189,8 +160,7 @@ static int msi_domain_activate(struct irq_domain *domain,
if (msi_remapped(domain))
irq_remapping_get_msi_entry(irq_data->parent_data, &msg);
else
- native_compose_msi_msg(NULL, irq_data->irq, cfg->dest_apicid,
- &msg, 0);
+ native_compose_msi_msg(cfg, &msg);
write_msi_msg(irq_data->irq, &msg);
return 0;
@@ -217,36 +187,6 @@ static struct irq_domain_ops msi_domain_ops = {
.deactivate = msi_domain_deactivate,
};
-int setup_msi_irq(struct pci_dev *dev, struct msi_desc *msidesc,
- unsigned int irq_base, unsigned int irq_offset)
-{
- struct irq_chip *chip = &msi_chip;
- struct msi_msg msg;
- unsigned int irq = irq_base + irq_offset;
- int ret;
-
- ret = msi_compose_msg(dev, irq, &msg, -1);
- if (ret < 0)
- return ret;
-
- irq_set_msi_desc_off(irq_base, irq_offset, msidesc);
-
- /*
- * MSI-X message is written per-IRQ, the offset is always 0.
- * MSI message denotes a contiguous group of IRQs, written for 0th IRQ.
- */
- if (!irq_offset)
- write_msi_msg(irq, &msg);
-
- setup_remapped_irq(irq, irq_cfg(irq), chip);
-
- irq_set_chip_and_handler_name(irq, chip, handle_edge_irq, "edge");
-
- dev_dbg(&dev->dev, "irq %d for MSI/MSI-X\n", irq);
-
- return 0;
-}
-
int native_setup_msi_irqs(struct pci_dev *dev, int nvec, int type)
{
int irq, cnt, nvec_pow2;
@@ -378,7 +318,7 @@ int arch_setup_dmar_msi(unsigned int irq)
struct msi_msg msg;
struct irq_cfg *cfg = irq_cfg(irq);
- native_compose_msi_msg(NULL, irq, cfg->dest_apicid, &msg, -1);
+ native_compose_msi_msg(cfg, &msg);
dmar_msi_write(irq, &msg);
irq_set_chip_and_handler_name(irq, &dmar_msi_type, handle_edge_irq,
"edge");
@@ -444,24 +384,6 @@ static struct irq_chip hpet_msi_type = {
.irq_print_chip = irq_remapping_print_chip,
};
-int default_setup_hpet_msi(unsigned int irq, unsigned int id)
-{
- struct irq_chip *chip = &hpet_msi_type;
- struct msi_msg msg;
- int ret;
-
- ret = msi_compose_msg(NULL, irq, &msg, id);
- if (ret < 0)
- return ret;
-
- hpet_msi_write(irq_get_handler_data(irq), &msg);
- irq_set_status_flags(irq, IRQ_MOVE_PCNTXT);
- setup_remapped_irq(irq, irq_cfg(irq), chip);
-
- irq_set_chip_and_handler_name(irq, chip, handle_edge_irq, "edge");
- return 0;
-}
-
static int hpet_domain_alloc(struct irq_domain *domain, unsigned int virq,
unsigned int nr_irqs, void *arg)
{
@@ -510,8 +432,7 @@ static int hpet_domain_activate(struct irq_domain *domain,
if (hpet_remapped(domain))
irq_remapping_get_msi_entry(irq_data->parent_data, &msg);
else
- native_compose_msi_msg(NULL, irq_data->irq, cfg->dest_apicid,
- &msg, hpet_dev_id(domain));
+ native_compose_msi_msg(cfg, &msg);
hpet_msi_write(irq_get_handler_data(irq_data->irq), &msg);
return 0;
--
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 ` [RFC Part2 v1 20/21] x86: irq_remapping: " Jiang Liu
2014-09-11 14:03 ` Jiang Liu [this message]
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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