From 3c3d4f90f6f80cce357ef013baf1327a9b9d5732 Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Mon, 13 Apr 2015 14:11:38 +0800 Subject: [PATCH] irq_remapping/amd: Clean up unused MSI related code Now MSI interrupt has been converted to new hierarchical irqdomain interfaces, so remove legacy MSI related code. Signed-off-by: Jiang Liu Acked-by: Joerg Roedel Cc: Konrad Rzeszutek Wilk Cc: David Cohen Cc: Sander Eikelenboom Cc: David Vrabel Cc: Tony Luck Cc: Greg Kroah-Hartman Cc: iommu@lists.linux-foundation.org Cc: Bjorn Helgaas Cc: Benjamin Herrenschmidt Cc: Rafael J. Wysocki Cc: Randy Dunlap Cc: Yinghai Lu Cc: Borislav Petkov Cc: Dimitri Sivanich Cc: Joerg Roedel Link: http://lkml.kernel.org/r/1428905519-23704-17-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner --- 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 a14ba26564a3..8858cb6c70de 100644 --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -3955,8 +3955,7 @@ 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; @@ -3982,11 +3981,6 @@ 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; } } @@ -4186,106 +4180,6 @@ 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; @@ -4361,10 +4255,6 @@ 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, }; @@ -4462,8 +4352,7 @@ 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"); -- 2.34.1