Save the MSI-X entry initial mask status in
msix_setup_entries(), also mask the entry.
This is preparation for generic MSI.
Signed-off-by: Yijing Wang <wangyij...@huawei.com>
---
drivers/pci/msi.c | 21 +++++++++++----------
1 files changed, 11 insertions(+), 10 deletions(-)
diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c
index f96dd38..41c33da 100644
--- a/drivers/pci/msi.c
+++ b/drivers/pci/msi.c
@@ -672,7 +672,7 @@ static int msix_setup_entries(struct pci_dev *dev, void
__iomem *base,
struct msix_entry *entries, int nvec)
{
struct msi_desc *entry;
- int i;
+ int i, offset;
for (i = 0; i < nvec; i++) {
entry = alloc_msi_entry(dev);
@@ -691,6 +691,15 @@ static int msix_setup_entries(struct pci_dev *dev, void
__iomem *base,
entry->msi_attrib.default_irq = dev->irq;
entry->mask_base = base;
+ msix_clear_and_set_ctrl(dev, 0,
+ PCI_MSIX_FLAGS_MASKALL | PCI_MSIX_FLAGS_ENABLE);
+ offset = entries[i].entry * PCI_MSIX_ENTRY_SIZE +
+ PCI_MSIX_ENTRY_VECTOR_CTRL;
+ entry->masked = readl(entry->mask_base + offset);
+ msix_mask_irq(entry, 1);
+ msix_clear_and_set_ctrl(dev,
+ PCI_MSIX_FLAGS_MASKALL | PCI_MSIX_FLAGS_ENABLE,
0);
+
list_add_tail(&entry->list, &dev->msi_list);
}
@@ -704,13 +713,8 @@ static void msix_program_entries(struct pci_dev *dev,
int i = 0;
list_for_each_entry(entry, &dev->msi_list, list) {
- int offset = entries[i].entry * PCI_MSIX_ENTRY_SIZE +
- PCI_MSIX_ENTRY_VECTOR_CTRL;
-
entries[i].vector = entry->irq;
irq_set_msi_desc(entry->irq, entry);
- entry->masked = readl(entry->mask_base + offset);
- msix_mask_irq(entry, 1);
i++;
}
}
@@ -746,16 +750,13 @@ static int msix_capability_init(struct pci_dev *dev, void
__iomem *base,
* MSI-X registers. We need to mask all the vectors to prevent
* interrupts coming in before they're fully set up.
*/
- msix_clear_and_set_ctrl(dev, 0,
- PCI_MSIX_FLAGS_MASKALL | PCI_MSIX_FLAGS_ENABLE);
-
msix_program_entries(dev, entries);
/* Set MSI-X enabled bits and unmask the function */
pci_intx_for_msi(dev, 0);
dev->msix_enabled = 1;
- msix_clear_and_set_ctrl(dev, PCI_MSIX_FLAGS_MASKALL, 0);
+ msix_clear_and_set_ctrl(dev, 0, PCI_MSIX_FLAGS_ENABLE);
return 0;
--
1.7.1
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