/**
* struct vmd_irq_list - list of driver requested IRQs mapping to a VMD vector
* @irq_list: the list of irq's the VMD one demuxes to.
- * @vmd_vector: the h/w IRQ assigned to the VMD.
- * @index: index into the VMD MSI-X table; used for message routing.
* @count: number of child IRQs assigned to this vector; used to track
* sharing.
*/
struct vmd_irq_list {
struct list_head irq_list;
- struct vmd_dev *vmd;
- unsigned int vmd_vector;
- unsigned int index;
unsigned int count;
};
char __iomem *cfgbar;
int msix_count;
- struct msix_entry *msix_entries;
struct vmd_irq_list *irqs;
struct pci_sysdata sysdata;
return container_of(bus->sysdata, struct vmd_dev, sysdata);
}
+static inline unsigned int index_from_irqs(struct vmd_dev *vmd,
+ struct vmd_irq_list *irqs)
+{
+ return irqs - vmd->irqs;
+}
+
/*
* Drivers managing a device in a VMD domain allocate their own IRQs as before,
* but the MSI entry for the hardware it's driving will be programmed with a
{
struct vmd_irq *vmdirq = data->chip_data;
struct vmd_irq_list *irq = vmdirq->irq;
+ struct vmd_dev *vmd = irq_data_get_irq_handler_data(data);
msg->address_hi = MSI_ADDR_BASE_HI;
- msg->address_lo = MSI_ADDR_BASE_LO | MSI_ADDR_DEST_ID(irq->index);
+ msg->address_lo = MSI_ADDR_BASE_LO |
+ MSI_ADDR_DEST_ID(index_from_irqs(vmd, irq));
msg->data = 0;
}
struct msi_desc *desc = arg->desc;
struct vmd_dev *vmd = vmd_from_bus(msi_desc_to_pci_dev(desc)->bus);
struct vmd_irq *vmdirq = kzalloc(sizeof(*vmdirq), GFP_KERNEL);
+ unsigned int index, vector;
if (!vmdirq)
return -ENOMEM;
INIT_LIST_HEAD(&vmdirq->node);
vmdirq->irq = vmd_next_irq(vmd, desc);
vmdirq->virq = virq;
+ index = index_from_irqs(vmd, vmdirq->irq);
+ vector = pci_irq_vector(vmd->dev, index);
- irq_domain_set_info(domain, virq, vmdirq->irq->vmd_vector, info->chip,
- vmdirq, handle_untracked_irq, vmd, NULL);
+ irq_domain_set_info(domain, virq, vector, info->chip, vmdirq,
+ handle_untracked_irq, vmd, NULL);
return 0;
}
struct vmd_irq *vmdirq = irq_get_chip_data(virq);
unsigned long flags;
+ synchronize_rcu();
+
/* XXX: Potential optimization to rebalance */
raw_spin_lock_irqsave(&list_lock, flags);
vmdirq->irq->count--;
}
static void *vmd_alloc(struct device *dev, size_t size, dma_addr_t *addr,
- gfp_t flag, struct dma_attrs *attrs)
+ gfp_t flag, unsigned long attrs)
{
return vmd_dma_ops(dev)->alloc(to_vmd_dev(dev), size, addr, flag,
attrs);
}
static void vmd_free(struct device *dev, size_t size, void *vaddr,
- dma_addr_t addr, struct dma_attrs *attrs)
+ dma_addr_t addr, unsigned long attrs)
{
return vmd_dma_ops(dev)->free(to_vmd_dev(dev), size, vaddr, addr,
attrs);
static int vmd_mmap(struct device *dev, struct vm_area_struct *vma,
void *cpu_addr, dma_addr_t addr, size_t size,
- struct dma_attrs *attrs)
+ unsigned long attrs)
{
return vmd_dma_ops(dev)->mmap(to_vmd_dev(dev), vma, cpu_addr, addr,
size, attrs);
static int vmd_get_sgtable(struct device *dev, struct sg_table *sgt,
void *cpu_addr, dma_addr_t addr, size_t size,
- struct dma_attrs *attrs)
+ unsigned long attrs)
{
return vmd_dma_ops(dev)->get_sgtable(to_vmd_dev(dev), sgt, cpu_addr,
addr, size, attrs);
static dma_addr_t vmd_map_page(struct device *dev, struct page *page,
unsigned long offset, size_t size,
enum dma_data_direction dir,
- struct dma_attrs *attrs)
+ unsigned long attrs)
{
return vmd_dma_ops(dev)->map_page(to_vmd_dev(dev), page, offset, size,
dir, attrs);
}
static void vmd_unmap_page(struct device *dev, dma_addr_t addr, size_t size,
- enum dma_data_direction dir, struct dma_attrs *attrs)
+ enum dma_data_direction dir, unsigned long attrs)
{
vmd_dma_ops(dev)->unmap_page(to_vmd_dev(dev), addr, size, dir, attrs);
}
static int vmd_map_sg(struct device *dev, struct scatterlist *sg, int nents,
- enum dma_data_direction dir, struct dma_attrs *attrs)
+ enum dma_data_direction dir, unsigned long attrs)
{
return vmd_dma_ops(dev)->map_sg(to_vmd_dev(dev), sg, nents, dir, attrs);
}
static void vmd_unmap_sg(struct device *dev, struct scatterlist *sg, int nents,
- enum dma_data_direction dir, struct dma_attrs *attrs)
+ enum dma_data_direction dir, unsigned long attrs)
{
vmd_dma_ops(dev)->unmap_sg(to_vmd_dev(dev), sg, nents, dir, attrs);
}
if (vmd->msix_count < 0)
return -ENODEV;
+ vmd->msix_count = pci_alloc_irq_vectors(dev, 1, vmd->msix_count,
+ PCI_IRQ_MSIX | PCI_IRQ_AFFINITY);
+ if (vmd->msix_count < 0)
+ return vmd->msix_count;
+
vmd->irqs = devm_kcalloc(&dev->dev, vmd->msix_count, sizeof(*vmd->irqs),
GFP_KERNEL);
if (!vmd->irqs)
return -ENOMEM;
- vmd->msix_entries = devm_kcalloc(&dev->dev, vmd->msix_count,
- sizeof(*vmd->msix_entries),
- GFP_KERNEL);
- if (!vmd->msix_entries)
- return -ENOMEM;
- for (i = 0; i < vmd->msix_count; i++)
- vmd->msix_entries[i].entry = i;
-
- vmd->msix_count = pci_enable_msix_range(vmd->dev, vmd->msix_entries, 1,
- vmd->msix_count);
- if (vmd->msix_count < 0)
- return vmd->msix_count;
-
for (i = 0; i < vmd->msix_count; i++) {
INIT_LIST_HEAD(&vmd->irqs[i].irq_list);
- vmd->irqs[i].vmd_vector = vmd->msix_entries[i].vector;
- vmd->irqs[i].index = i;
-
- err = devm_request_irq(&dev->dev, vmd->irqs[i].vmd_vector,
+ err = devm_request_irq(&dev->dev, pci_irq_vector(dev, i),
vmd_irq, 0, "vmd", &vmd->irqs[i]);
if (err)
return err;