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Message-Id: <1416894816-23245-17-git-send-email-jiang.liu@linux.intel.com>
Date: Tue, 25 Nov 2014 13:53:25 +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>, Joerg Roedel <joro@...tes.org>
Cc: Jiang Liu <jiang.liu@...ux.intel.com>,
Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
Andrew Morton <akpm@...ux-foundation.org>,
Tony Luck <tony.luck@...el.com>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
x86@...nel.org, linux-kernel@...r.kernel.org,
linux-pci@...r.kernel.org, linux-acpi@...r.kernel.org,
iommu@...ts.linux-foundation.org
Subject: [Patch Part2 v6 16/27] iommu/amd: Clean up unused MSI related code
Now MSI interrupt has been converted to new hierarchy irqdomain
interfaces, so kill legacy MSI related code.
Signed-off-by: Jiang Liu <jiang.liu@...ux.intel.com>
Acked-by: Joerg Roedel <jroedel@...e.de>
---
drivers/iommu/amd_iommu.c | 115 +--------------------------------------------
1 file changed, 2 insertions(+), 113 deletions(-)
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index d02742311201..38fb944d935b 100644
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -3958,8 +3958,7 @@ out_unlock:
return table;
}
-static int alloc_irq_index(struct irq_cfg *cfg, struct irq_2_irte *irte_info,
- u16 devid, int count)
+static int alloc_irq_index(u16 devid, int count)
{
struct irq_remap_table *table;
unsigned long flags;
@@ -3985,11 +3984,6 @@ static int alloc_irq_index(struct irq_cfg *cfg, struct irq_2_irte *irte_info,
table->table[index - c + 1] = IRTE_ALLOCATED;
index -= count - 1;
-
- cfg->remapped = 1;
- irte_info->devid = devid;
- irte_info->index = index;
-
goto out;
}
}
@@ -4189,106 +4183,6 @@ static int free_irq(int irq)
return 0;
}
-static void compose_msi_msg(struct pci_dev *pdev,
- unsigned int irq, unsigned int dest,
- struct msi_msg *msg, u8 hpet_id)
-{
- struct irq_2_irte *irte_info;
- struct irq_cfg *cfg;
- union irte irte;
-
- cfg = irq_cfg(irq);
- if (!cfg)
- return;
-
- irte_info = &cfg->irq_2_irte;
-
- irte.val = 0;
- irte.fields.vector = cfg->vector;
- irte.fields.int_type = apic->irq_delivery_mode;
- irte.fields.destination = dest;
- irte.fields.dm = apic->irq_dest_mode;
- irte.fields.valid = 1;
-
- modify_irte(irte_info->devid, irte_info->index, irte);
-
- msg->address_hi = MSI_ADDR_BASE_HI;
- msg->address_lo = MSI_ADDR_BASE_LO;
- msg->data = irte_info->index;
-}
-
-static int msi_alloc_irq(struct pci_dev *pdev, int irq, int nvec)
-{
- struct irq_cfg *cfg;
- int index;
- u16 devid;
-
- if (!pdev)
- return -EINVAL;
-
- cfg = irq_cfg(irq);
- if (!cfg)
- return -EINVAL;
-
- devid = get_device_id(&pdev->dev);
- index = alloc_irq_index(cfg, &cfg->irq_2_irte, devid, nvec);
-
- return index < 0 ? MAX_IRQS_PER_TABLE : index;
-}
-
-static int msi_setup_irq(struct pci_dev *pdev, unsigned int irq,
- int index, int offset)
-{
- struct irq_2_irte *irte_info;
- struct irq_cfg *cfg;
- u16 devid;
-
- if (!pdev)
- return -EINVAL;
-
- cfg = irq_cfg(irq);
- if (!cfg)
- return -EINVAL;
-
- if (index >= MAX_IRQS_PER_TABLE)
- return 0;
-
- devid = get_device_id(&pdev->dev);
- irte_info = &cfg->irq_2_irte;
-
- cfg->remapped = 1;
- irte_info->devid = devid;
- irte_info->index = index + offset;
-
- return 0;
-}
-
-static int alloc_hpet_msi(unsigned int irq, unsigned int id)
-{
- struct irq_2_irte *irte_info;
- struct irq_cfg *cfg;
- int index, devid;
-
- cfg = irq_cfg(irq);
- if (!cfg)
- return -EINVAL;
-
- irte_info = &cfg->irq_2_irte;
- devid = get_hpet_devid(id);
- if (devid < 0)
- return devid;
-
- index = alloc_irq_index(cfg, &cfg->irq_2_irte, devid, 1);
- if (index < 0)
- return index;
-
- cfg->remapped = 1;
- irte_info->devid = devid;
- irte_info->index = index;
-
- return 0;
-}
-
static int get_devid(struct irq_alloc_info *info)
{
int devid = -1;
@@ -4365,10 +4259,6 @@ struct irq_remap_ops amd_iommu_irq_ops = {
.setup_ioapic_entry = setup_ioapic_entry,
.set_affinity = set_affinity,
.free_irq = free_irq,
- .compose_msi_msg = compose_msi_msg,
- .msi_alloc_irq = msi_alloc_irq,
- .msi_setup_irq = msi_setup_irq,
- .alloc_hpet_msi = alloc_hpet_msi,
.get_ir_irq_domain = get_ir_irq_domain,
.get_irq_domain = get_irq_domain,
};
@@ -4466,8 +4356,7 @@ static int irq_remapping_alloc(struct irq_domain *domain, unsigned int virq,
else
ret = -ENOMEM;
} else {
- cfg = irq_cfg(virq);
- index = alloc_irq_index(cfg, &data->irq_2_irte, devid, nr_irqs);
+ index = alloc_irq_index(devid, nr_irqs);
}
if (index < 0) {
pr_warn("Failed to allocate IRTE\n");
--
1.7.10.4
--
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