diff mbox series

[RFCv1,4/7] PCI/MSI: Allow __pci_enable_msi_range to pass in iova

Message ID 7406707cbcf225fe8f6ec3ce497bdcfc51f27afb.1731130093.git.nicolinc@nvidia.com (mailing list archive)
State New
Headers show
Series vfio: Allow userspace to specify the address for each MSI vector | expand

Commit Message

Nicolin Chen Nov. 9, 2024, 5:48 a.m. UTC 
The previous patch passes in the msi_iova to msi_capability_init, so this
allows its caller to do the same.

Signed-off-by: Nicolin Chen <nicolinc@nvidia.com>
---
 drivers/pci/msi/msi.h | 3 ++-
 drivers/pci/msi/api.c | 6 ++++--
 drivers/pci/msi/msi.c | 4 ++--
 3 files changed, 8 insertions(+), 5 deletions(-)

Comments

Andy Shevchenko Nov. 11, 2024, 9:30 a.m. UTC | #1 
On Fri, Nov 08, 2024 at 09:48:49PM -0800, Nicolin Chen wrote:
> The previous patch passes in the msi_iova to msi_capability_init, so this

msi_capability_init()

> allows its caller to do the same.
diff mbox series

Patch

diff --git a/drivers/pci/msi/msi.h b/drivers/pci/msi/msi.h
index ee53cf079f4e..8009d69bf9a5 100644
--- a/drivers/pci/msi/msi.h
+++ b/drivers/pci/msi/msi.h
@@ -93,7 +93,8 @@  extern int pci_msi_enable;
 void pci_msi_shutdown(struct pci_dev *dev);
 void pci_msix_shutdown(struct pci_dev *dev);
 void pci_free_msi_irqs(struct pci_dev *dev);
-int __pci_enable_msi_range(struct pci_dev *dev, int minvec, int maxvec, struct irq_affinity *affd);
+int __pci_enable_msi_range(struct pci_dev *dev, int minvec, int maxvec,
+			   struct irq_affinity *affd, dma_addr_t iova);
 int __pci_enable_msix_range(struct pci_dev *dev, struct msix_entry *entries, int minvec,
 			    int maxvec,  struct irq_affinity *affd, int flags);
 void __pci_restore_msi_state(struct pci_dev *dev);
diff --git a/drivers/pci/msi/api.c b/drivers/pci/msi/api.c
index b956ce591f96..99ade7f69cd4 100644
--- a/drivers/pci/msi/api.c
+++ b/drivers/pci/msi/api.c
@@ -29,7 +29,8 @@ 
  */
 int pci_enable_msi(struct pci_dev *dev)
 {
-	int rc = __pci_enable_msi_range(dev, 1, 1, NULL);
+	int rc = __pci_enable_msi_range(dev, 1, 1, NULL,
+					PHYS_ADDR_MAX);
 	if (rc < 0)
 		return rc;
 	return 0;
@@ -274,7 +275,8 @@  int pci_alloc_irq_vectors_affinity(struct pci_dev *dev, unsigned int min_vecs,
 	}
 
 	if (flags & PCI_IRQ_MSI) {
-		nvecs = __pci_enable_msi_range(dev, min_vecs, max_vecs, affd);
+		nvecs = __pci_enable_msi_range(dev, min_vecs, max_vecs,
+					       affd, PHYS_ADDR_MAX);
 		if (nvecs > 0)
 			return nvecs;
 	}
diff --git a/drivers/pci/msi/msi.c b/drivers/pci/msi/msi.c
index 95caa81d3421..25da0435c674 100644
--- a/drivers/pci/msi/msi.c
+++ b/drivers/pci/msi/msi.c
@@ -417,7 +417,7 @@  static int msi_capability_init(struct pci_dev *dev, int nvec,
 }
 
 int __pci_enable_msi_range(struct pci_dev *dev, int minvec, int maxvec,
-			   struct irq_affinity *affd)
+			   struct irq_affinity *affd, dma_addr_t iova)
 {
 	int nvec;
 	int rc;
@@ -460,7 +460,7 @@  int __pci_enable_msi_range(struct pci_dev *dev, int minvec, int maxvec,
 				return -ENOSPC;
 		}
 
-		rc = msi_capability_init(dev, nvec, affd, PHYS_ADDR_MAX);
+		rc = msi_capability_init(dev, nvec, affd, iova);
 		if (rc == 0)
 			return nvec;