[PATCH 0/2] Cleanup IRQ type definitions

[PATCH 0/2] Cleanup IRQ type definitions

[Damien Le Moal]

The first patch renames PCI_IRQ_LEGACY to PCI_IRQ_INTX as suggested by
Bjorn (hence the patch authorship is given to him).

The second patch removes the redundant IRQ type definitions
PCI_EPC_IRQ_XXX and replace these with a direct use of the PCI_IRQ_XXX
definitions. Going forward, more cleanups renaming "legacy" to "intx"
in various drivers can be added on top of this series.

Bjorn Helgaas (1):
  PCI: Rename PCI_IRQ_LEGACY to PCI_IRQ_INTX

Damien Le Moal (1):
  PCI: endpoint: Drop PCI_EPC_IRQ_XXX definitions

 drivers/pci/controller/cadence/pcie-cadence-ep.c  |  9 ++++-----
 drivers/pci/controller/dwc/pci-dra7xx.c           |  6 +++---
 drivers/pci/controller/dwc/pci-imx6.c             |  9 ++++-----
 drivers/pci/controller/dwc/pci-keystone.c         |  9 ++++-----
 drivers/pci/controller/dwc/pci-layerscape-ep.c    |  8 ++++----
 drivers/pci/controller/dwc/pcie-artpec6.c         |  8 ++++----
 drivers/pci/controller/dwc/pcie-designware-ep.c   |  2 +-
 drivers/pci/controller/dwc/pcie-designware-plat.c |  9 ++++-----
 drivers/pci/controller/dwc/pcie-designware.h      |  2 +-
 drivers/pci/controller/dwc/pcie-keembay.c         | 13 ++++++-------
 drivers/pci/controller/dwc/pcie-qcom-ep.c         |  6 +++---
 drivers/pci/controller/dwc/pcie-tegra194.c        |  9 ++++-----
 drivers/pci/controller/dwc/pcie-uniphier-ep.c     |  7 +++----
 drivers/pci/controller/pcie-rcar-ep.c             |  7 +++----
 drivers/pci/controller/pcie-rockchip-ep.c         |  7 +++----
 drivers/pci/endpoint/functions/pci-epf-mhi.c      |  2 +-
 drivers/pci/endpoint/functions/pci-epf-ntb.c      |  4 ++--
 drivers/pci/endpoint/functions/pci-epf-test.c     |  6 +++---
 drivers/pci/endpoint/functions/pci-epf-vntb.c     |  7 ++-----
 drivers/pci/endpoint/pci-epc-core.c               |  2 +-
 include/linux/pci-epc.h                           | 11 ++---------
 include/linux/pci.h                               |  4 +++-
 22 files changed, 65 insertions(+), 82 deletions(-)

-- 
2.41.0

[PATCH 1/2] PCI: Rename PCI_IRQ_LEGACY to PCI_IRQ_INTX

[Damien Le Moal]

From: Bjorn Helgaas <helgaas@kernel.org>

Rename PCI_IRQ_LEGACY to PCI_IRQ_INTX to be more explicit about the type
of IRQ being referenced as well as to match the PCI specifications
terms. The macro PCI_IRQ_LEGACY is redefined as an alias to PCI_IRQ_INTX
to avoid the need for doing the renaming tree-wide. New drivers and new
code should now prefer using PCI_IRQ_INTX instead of PCI_IRQ_LEGACY.

Signed-off-by: Bjorn Helgaas <helgaas@kernel.org>
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
---
 include/linux/pci.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/include/linux/pci.h b/include/linux/pci.h
index 0ff7500772e6..7692d73719e0 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -1048,11 +1048,13 @@ enum {
 	PCI_SCAN_ALL_PCIE_DEVS	= 0x00000040,	/* Scan all, not just dev 0 */
 };
 
-#define PCI_IRQ_LEGACY		(1 << 0) /* Allow legacy interrupts */
+#define PCI_IRQ_INTX		(1 << 0) /* Allow INTx interrupts */
 #define PCI_IRQ_MSI		(1 << 1) /* Allow MSI interrupts */
 #define PCI_IRQ_MSIX		(1 << 2) /* Allow MSI-X interrupts */
 #define PCI_IRQ_AFFINITY	(1 << 3) /* Auto-assign affinity */
 
+#define PCI_IRQ_LEGACY		PCI_IRQ_INTX	/* prefer PCI_IRQ_INTX */
+
 /* These external functions are only available when PCI support is enabled */
 #ifdef CONFIG_PCI
 
-- 
2.41.0

[PATCH 2/2] PCI: endpoint: Drop PCI_EPC_IRQ_XXX definitions

[Damien Le Moal]

linux/pci.h defines the IRQ flags PCI_IRQ_INTX, PCI_IRQ_MSI and
PCI_IRQ_MSIX. Let's use these flags directly instead of the endpoint
definitions provided by enum pci_epc_irq_type. This removes the need
for defining this enum type completely.

Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
---
 drivers/pci/controller/cadence/pcie-cadence-ep.c  |  9 ++++-----
 drivers/pci/controller/dwc/pci-dra7xx.c           |  6 +++---
 drivers/pci/controller/dwc/pci-imx6.c             |  9 ++++-----
 drivers/pci/controller/dwc/pci-keystone.c         |  9 ++++-----
 drivers/pci/controller/dwc/pci-layerscape-ep.c    |  8 ++++----
 drivers/pci/controller/dwc/pcie-artpec6.c         |  8 ++++----
 drivers/pci/controller/dwc/pcie-designware-ep.c   |  2 +-
 drivers/pci/controller/dwc/pcie-designware-plat.c |  9 ++++-----
 drivers/pci/controller/dwc/pcie-designware.h      |  2 +-
 drivers/pci/controller/dwc/pcie-keembay.c         | 13 ++++++-------
 drivers/pci/controller/dwc/pcie-qcom-ep.c         |  6 +++---
 drivers/pci/controller/dwc/pcie-tegra194.c        |  9 ++++-----
 drivers/pci/controller/dwc/pcie-uniphier-ep.c     |  7 +++----
 drivers/pci/controller/pcie-rcar-ep.c             |  7 +++----
 drivers/pci/controller/pcie-rockchip-ep.c         |  7 +++----
 drivers/pci/endpoint/functions/pci-epf-mhi.c      |  2 +-
 drivers/pci/endpoint/functions/pci-epf-ntb.c      |  4 ++--
 drivers/pci/endpoint/functions/pci-epf-test.c     |  6 +++---
 drivers/pci/endpoint/functions/pci-epf-vntb.c     |  7 ++-----
 drivers/pci/endpoint/pci-epc-core.c               |  2 +-
 include/linux/pci-epc.h                           | 11 ++---------
 21 files changed, 62 insertions(+), 81 deletions(-)

diff --git a/drivers/pci/controller/cadence/pcie-cadence-ep.c b/drivers/pci/controller/cadence/pcie-cadence-ep.c
index b8b655d4047e..885291bb1e28 100644
--- a/drivers/pci/controller/cadence/pcie-cadence-ep.c
+++ b/drivers/pci/controller/cadence/pcie-cadence-ep.c
@@ -531,25 +531,24 @@ static int cdns_pcie_ep_send_msix_irq(struct cdns_pcie_ep *ep, u8 fn, u8 vfn,
 }
 
 static int cdns_pcie_ep_raise_irq(struct pci_epc *epc, u8 fn, u8 vfn,
-				  enum pci_epc_irq_type type,
-				  u16 interrupt_num)
+				  unsigned int type, u16 interrupt_num)
 {
 	struct cdns_pcie_ep *ep = epc_get_drvdata(epc);
 	struct cdns_pcie *pcie = &ep->pcie;
 	struct device *dev = pcie->dev;
 
 	switch (type) {
-	case PCI_EPC_IRQ_LEGACY:
+	case PCI_IRQ_INTX:
 		if (vfn > 0) {
 			dev_err(dev, "Cannot raise legacy interrupts for VF\n");
 			return -EINVAL;
 		}
 		return cdns_pcie_ep_send_legacy_irq(ep, fn, vfn, 0);
 
-	case PCI_EPC_IRQ_MSI:
+	case PCI_IRQ_MSI:
 		return cdns_pcie_ep_send_msi_irq(ep, fn, vfn, interrupt_num);
 
-	case PCI_EPC_IRQ_MSIX:
+	case PCI_IRQ_MSIX:
 		return cdns_pcie_ep_send_msix_irq(ep, fn, vfn, interrupt_num);
 
 	default:
diff --git a/drivers/pci/controller/dwc/pci-dra7xx.c b/drivers/pci/controller/dwc/pci-dra7xx.c
index b445ffe95e3f..f257a42f3314 100644
--- a/drivers/pci/controller/dwc/pci-dra7xx.c
+++ b/drivers/pci/controller/dwc/pci-dra7xx.c
@@ -404,16 +404,16 @@ static void dra7xx_pcie_raise_msi_irq(struct dra7xx_pcie *dra7xx,
 }
 
 static int dra7xx_pcie_raise_irq(struct dw_pcie_ep *ep, u8 func_no,
-				 enum pci_epc_irq_type type, u16 interrupt_num)
+				 unsigned int type, u16 interrupt_num)
 {
 	struct dw_pcie *pci = to_dw_pcie_from_ep(ep);
 	struct dra7xx_pcie *dra7xx = to_dra7xx_pcie(pci);
 
 	switch (type) {
-	case PCI_EPC_IRQ_LEGACY:
+	case PCI_IRQ_INTX:
 		dra7xx_pcie_raise_legacy_irq(dra7xx);
 		break;
-	case PCI_EPC_IRQ_MSI:
+	case PCI_IRQ_MSI:
 		dra7xx_pcie_raise_msi_irq(dra7xx, interrupt_num);
 		break;
 	default:
diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c
index 235ead4c807f..adda8a43d058 100644
--- a/drivers/pci/controller/dwc/pci-imx6.c
+++ b/drivers/pci/controller/dwc/pci-imx6.c
@@ -1057,17 +1057,16 @@ static void imx6_pcie_ep_init(struct dw_pcie_ep *ep)
 }
 
 static int imx6_pcie_ep_raise_irq(struct dw_pcie_ep *ep, u8 func_no,
-				  enum pci_epc_irq_type type,
-				  u16 interrupt_num)
+				  unsigned int type, u16 interrupt_num)
 {
 	struct dw_pcie *pci = to_dw_pcie_from_ep(ep);
 
 	switch (type) {
-	case PCI_EPC_IRQ_LEGACY:
+	case PCI_IRQ_INTX:
 		return dw_pcie_ep_raise_legacy_irq(ep, func_no);
-	case PCI_EPC_IRQ_MSI:
+	case PCI_IRQ_MSI:
 		return dw_pcie_ep_raise_msi_irq(ep, func_no, interrupt_num);
-	case PCI_EPC_IRQ_MSIX:
+	case PCI_IRQ_MSIX:
 		return dw_pcie_ep_raise_msix_irq(ep, func_no, interrupt_num);
 	default:
 		dev_err(pci->dev, "UNKNOWN IRQ type\n");
diff --git a/drivers/pci/controller/dwc/pci-keystone.c b/drivers/pci/controller/dwc/pci-keystone.c
index 49aea6ce3e87..58170a4fc574 100644
--- a/drivers/pci/controller/dwc/pci-keystone.c
+++ b/drivers/pci/controller/dwc/pci-keystone.c
@@ -900,20 +900,19 @@ static void ks_pcie_am654_raise_legacy_irq(struct keystone_pcie *ks_pcie)
 }
 
 static int ks_pcie_am654_raise_irq(struct dw_pcie_ep *ep, u8 func_no,
-				   enum pci_epc_irq_type type,
-				   u16 interrupt_num)
+				   unsigned int type, u16 interrupt_num)
 {
 	struct dw_pcie *pci = to_dw_pcie_from_ep(ep);
 	struct keystone_pcie *ks_pcie = to_keystone_pcie(pci);
 
 	switch (type) {
-	case PCI_EPC_IRQ_LEGACY:
+	case PCI_IRQ_INTX:
 		ks_pcie_am654_raise_legacy_irq(ks_pcie);
 		break;
-	case PCI_EPC_IRQ_MSI:
+	case PCI_IRQ_MSI:
 		dw_pcie_ep_raise_msi_irq(ep, func_no, interrupt_num);
 		break;
-	case PCI_EPC_IRQ_MSIX:
+	case PCI_IRQ_MSIX:
 		dw_pcie_ep_raise_msix_irq(ep, func_no, interrupt_num);
 		break;
 	default:
diff --git a/drivers/pci/controller/dwc/pci-layerscape-ep.c b/drivers/pci/controller/dwc/pci-layerscape-ep.c
index de4c1758a6c3..6b65f1bcc550 100644
--- a/drivers/pci/controller/dwc/pci-layerscape-ep.c
+++ b/drivers/pci/controller/dwc/pci-layerscape-ep.c
@@ -150,16 +150,16 @@ static void ls_pcie_ep_init(struct dw_pcie_ep *ep)
 }
 
 static int ls_pcie_ep_raise_irq(struct dw_pcie_ep *ep, u8 func_no,
-				enum pci_epc_irq_type type, u16 interrupt_num)
+				unsigned int type, u16 interrupt_num)
 {
 	struct dw_pcie *pci = to_dw_pcie_from_ep(ep);
 
 	switch (type) {
-	case PCI_EPC_IRQ_LEGACY:
+	case PCI_IRQ_INTX:
 		return dw_pcie_ep_raise_legacy_irq(ep, func_no);
-	case PCI_EPC_IRQ_MSI:
+	case PCI_IRQ_MSI:
 		return dw_pcie_ep_raise_msi_irq(ep, func_no, interrupt_num);
-	case PCI_EPC_IRQ_MSIX:
+	case PCI_IRQ_MSIX:
 		return dw_pcie_ep_raise_msix_irq_doorbell(ep, func_no,
 							  interrupt_num);
 	default:
diff --git a/drivers/pci/controller/dwc/pcie-artpec6.c b/drivers/pci/controller/dwc/pcie-artpec6.c
index 9b572a2b2c9a..fc426182443a 100644
--- a/drivers/pci/controller/dwc/pcie-artpec6.c
+++ b/drivers/pci/controller/dwc/pcie-artpec6.c
@@ -352,15 +352,15 @@ static void artpec6_pcie_ep_init(struct dw_pcie_ep *ep)
 }
 
 static int artpec6_pcie_raise_irq(struct dw_pcie_ep *ep, u8 func_no,
-				  enum pci_epc_irq_type type, u16 interrupt_num)
+				  unsigned int type, u16 interrupt_num)
 {
 	struct dw_pcie *pci = to_dw_pcie_from_ep(ep);
 
 	switch (type) {
-	case PCI_EPC_IRQ_LEGACY:
-		dev_err(pci->dev, "EP cannot trigger legacy IRQs\n");
+	case PCI_IRQ_INTX:
+		dev_err(pci->dev, "EP cannot trigger INTx IRQs\n");
 		return -EINVAL;
-	case PCI_EPC_IRQ_MSI:
+	case PCI_IRQ_MSI:
 		return dw_pcie_ep_raise_msi_irq(ep, func_no, interrupt_num);
 	default:
 		dev_err(pci->dev, "UNKNOWN IRQ type\n");
diff --git a/drivers/pci/controller/dwc/pcie-designware-ep.c b/drivers/pci/controller/dwc/pcie-designware-ep.c
index f9182f8d552f..ab87ea3b0986 100644
--- a/drivers/pci/controller/dwc/pcie-designware-ep.c
+++ b/drivers/pci/controller/dwc/pcie-designware-ep.c
@@ -426,7 +426,7 @@ static int dw_pcie_ep_set_msix(struct pci_epc *epc, u8 func_no, u8 vfunc_no,
 }
 
 static int dw_pcie_ep_raise_irq(struct pci_epc *epc, u8 func_no, u8 vfunc_no,
-				enum pci_epc_irq_type type, u16 interrupt_num)
+				unsigned int type, u16 interrupt_num)
 {
 	struct dw_pcie_ep *ep = epc_get_drvdata(epc);
 
diff --git a/drivers/pci/controller/dwc/pcie-designware-plat.c b/drivers/pci/controller/dwc/pcie-designware-plat.c
index b625841e98aa..c83968aa0149 100644
--- a/drivers/pci/controller/dwc/pcie-designware-plat.c
+++ b/drivers/pci/controller/dwc/pcie-designware-plat.c
@@ -42,17 +42,16 @@ static void dw_plat_pcie_ep_init(struct dw_pcie_ep *ep)
 }
 
 static int dw_plat_pcie_ep_raise_irq(struct dw_pcie_ep *ep, u8 func_no,
-				     enum pci_epc_irq_type type,
-				     u16 interrupt_num)
+				     unsigned int type, u16 interrupt_num)
 {
 	struct dw_pcie *pci = to_dw_pcie_from_ep(ep);
 
 	switch (type) {
-	case PCI_EPC_IRQ_LEGACY:
+	case PCI_IRQ_INTX:
 		return dw_pcie_ep_raise_legacy_irq(ep, func_no);
-	case PCI_EPC_IRQ_MSI:
+	case PCI_IRQ_MSI:
 		return dw_pcie_ep_raise_msi_irq(ep, func_no, interrupt_num);
-	case PCI_EPC_IRQ_MSIX:
+	case PCI_IRQ_MSIX:
 		return dw_pcie_ep_raise_msix_irq(ep, func_no, interrupt_num);
 	default:
 		dev_err(pci->dev, "UNKNOWN IRQ type\n");
diff --git a/drivers/pci/controller/dwc/pcie-designware.h b/drivers/pci/controller/dwc/pcie-designware.h
index 615660640801..e039081eb947 100644
--- a/drivers/pci/controller/dwc/pcie-designware.h
+++ b/drivers/pci/controller/dwc/pcie-designware.h
@@ -320,7 +320,7 @@ struct dw_pcie_rp {
 struct dw_pcie_ep_ops {
 	void	(*ep_init)(struct dw_pcie_ep *ep);
 	int	(*raise_irq)(struct dw_pcie_ep *ep, u8 func_no,
-			     enum pci_epc_irq_type type, u16 interrupt_num);
+			     unsigned int type, u16 interrupt_num);
 	const struct pci_epc_features* (*get_features)(struct dw_pcie_ep *ep);
 	/*
 	 * Provide a method to implement the different func config space
diff --git a/drivers/pci/controller/dwc/pcie-keembay.c b/drivers/pci/controller/dwc/pcie-keembay.c
index 289bff99d762..8e0e2e28ef67 100644
--- a/drivers/pci/controller/dwc/pcie-keembay.c
+++ b/drivers/pci/controller/dwc/pcie-keembay.c
@@ -289,19 +289,18 @@ static void keembay_pcie_ep_init(struct dw_pcie_ep *ep)
 }
 
 static int keembay_pcie_ep_raise_irq(struct dw_pcie_ep *ep, u8 func_no,
-				     enum pci_epc_irq_type type,
-				     u16 interrupt_num)
+				     unsigned int type, u16 interrupt_num)
 {
 	struct dw_pcie *pci = to_dw_pcie_from_ep(ep);
 
 	switch (type) {
-	case PCI_EPC_IRQ_LEGACY:
-		/* Legacy interrupts are not supported in Keem Bay */
-		dev_err(pci->dev, "Legacy IRQ is not supported\n");
+	case PCI_IRQ_INTX:
+		/* INTx interrupts are not supported in Keem Bay */
+		dev_err(pci->dev, "INTx IRQ is not supported\n");
 		return -EINVAL;
-	case PCI_EPC_IRQ_MSI:
+	case PCI_IRQ_MSI:
 		return dw_pcie_ep_raise_msi_irq(ep, func_no, interrupt_num);
-	case PCI_EPC_IRQ_MSIX:
+	case PCI_IRQ_MSIX:
 		return dw_pcie_ep_raise_msix_irq(ep, func_no, interrupt_num);
 	default:
 		dev_err(pci->dev, "Unknown IRQ type %d\n", type);
diff --git a/drivers/pci/controller/dwc/pcie-qcom-ep.c b/drivers/pci/controller/dwc/pcie-qcom-ep.c
index 267e1247d548..5f95c33ae293 100644
--- a/drivers/pci/controller/dwc/pcie-qcom-ep.c
+++ b/drivers/pci/controller/dwc/pcie-qcom-ep.c
@@ -655,14 +655,14 @@ static int qcom_pcie_ep_enable_irq_resources(struct platform_device *pdev,
 }
 
 static int qcom_pcie_ep_raise_irq(struct dw_pcie_ep *ep, u8 func_no,
-				  enum pci_epc_irq_type type, u16 interrupt_num)
+				  unsigned int type, u16 interrupt_num)
 {
 	struct dw_pcie *pci = to_dw_pcie_from_ep(ep);
 
 	switch (type) {
-	case PCI_EPC_IRQ_LEGACY:
+	case PCI_IRQ_INTX:
 		return dw_pcie_ep_raise_legacy_irq(ep, func_no);
-	case PCI_EPC_IRQ_MSI:
+	case PCI_IRQ_MSI:
 		return dw_pcie_ep_raise_msi_irq(ep, func_no, interrupt_num);
 	default:
 		dev_err(pci->dev, "Unknown IRQ type\n");
diff --git a/drivers/pci/controller/dwc/pcie-tegra194.c b/drivers/pci/controller/dwc/pcie-tegra194.c
index 383ba71d1e8f..42205f0675d0 100644
--- a/drivers/pci/controller/dwc/pcie-tegra194.c
+++ b/drivers/pci/controller/dwc/pcie-tegra194.c
@@ -1992,20 +1992,19 @@ static int tegra_pcie_ep_raise_msix_irq(struct tegra_pcie_dw *pcie, u16 irq)
 }
 
 static int tegra_pcie_ep_raise_irq(struct dw_pcie_ep *ep, u8 func_no,
-				   enum pci_epc_irq_type type,
-				   u16 interrupt_num)
+				   unsigned int type, u16 interrupt_num)
 {
 	struct dw_pcie *pci = to_dw_pcie_from_ep(ep);
 	struct tegra_pcie_dw *pcie = to_tegra_pcie(pci);
 
 	switch (type) {
-	case PCI_EPC_IRQ_LEGACY:
+	case PCI_IRQ_INTX:
 		return tegra_pcie_ep_raise_legacy_irq(pcie, interrupt_num);
 
-	case PCI_EPC_IRQ_MSI:
+	case PCI_IRQ_MSI:
 		return tegra_pcie_ep_raise_msi_irq(pcie, interrupt_num);
 
-	case PCI_EPC_IRQ_MSIX:
+	case PCI_IRQ_MSIX:
 		return tegra_pcie_ep_raise_msix_irq(pcie, interrupt_num);
 
 	default:
diff --git a/drivers/pci/controller/dwc/pcie-uniphier-ep.c b/drivers/pci/controller/dwc/pcie-uniphier-ep.c
index cba3c88fcf39..d47236d5678d 100644
--- a/drivers/pci/controller/dwc/pcie-uniphier-ep.c
+++ b/drivers/pci/controller/dwc/pcie-uniphier-ep.c
@@ -256,15 +256,14 @@ static int uniphier_pcie_ep_raise_msi_irq(struct dw_pcie_ep *ep,
 }
 
 static int uniphier_pcie_ep_raise_irq(struct dw_pcie_ep *ep, u8 func_no,
-				      enum pci_epc_irq_type type,
-				      u16 interrupt_num)
+				      unsigned int type, u16 interrupt_num)
 {
 	struct dw_pcie *pci = to_dw_pcie_from_ep(ep);
 
 	switch (type) {
-	case PCI_EPC_IRQ_LEGACY:
+	case PCI_IRQ_INTX:
 		return uniphier_pcie_ep_raise_legacy_irq(ep);
-	case PCI_EPC_IRQ_MSI:
+	case PCI_IRQ_MSI:
 		return uniphier_pcie_ep_raise_msi_irq(ep, func_no,
 						      interrupt_num);
 	default:
diff --git a/drivers/pci/controller/pcie-rcar-ep.c b/drivers/pci/controller/pcie-rcar-ep.c
index f9682df1da61..c21294bc430d 100644
--- a/drivers/pci/controller/pcie-rcar-ep.c
+++ b/drivers/pci/controller/pcie-rcar-ep.c
@@ -402,16 +402,15 @@ static int rcar_pcie_ep_assert_msi(struct rcar_pcie *pcie,
 }
 
 static int rcar_pcie_ep_raise_irq(struct pci_epc *epc, u8 fn, u8 vfn,
-				  enum pci_epc_irq_type type,
-				  u16 interrupt_num)
+				  unsigned int type, u16 interrupt_num)
 {
 	struct rcar_pcie_endpoint *ep = epc_get_drvdata(epc);
 
 	switch (type) {
-	case PCI_EPC_IRQ_LEGACY:
+	case PCI_IRQ_INTX:
 		return rcar_pcie_ep_assert_intx(ep, fn, 0);
 
-	case PCI_EPC_IRQ_MSI:
+	case PCI_IRQ_MSI:
 		return rcar_pcie_ep_assert_msi(&ep->pcie, fn, interrupt_num);
 
 	default:
diff --git a/drivers/pci/controller/pcie-rockchip-ep.c b/drivers/pci/controller/pcie-rockchip-ep.c
index 0af0e965fb57..397ad551c912 100644
--- a/drivers/pci/controller/pcie-rockchip-ep.c
+++ b/drivers/pci/controller/pcie-rockchip-ep.c
@@ -407,15 +407,14 @@ static int rockchip_pcie_ep_send_msi_irq(struct rockchip_pcie_ep *ep, u8 fn,
 }
 
 static int rockchip_pcie_ep_raise_irq(struct pci_epc *epc, u8 fn, u8 vfn,
-				      enum pci_epc_irq_type type,
-				      u16 interrupt_num)
+				      unsigned int type, u16 interrupt_num)
 {
 	struct rockchip_pcie_ep *ep = epc_get_drvdata(epc);
 
 	switch (type) {
-	case PCI_EPC_IRQ_LEGACY:
+	case PCI_IRQ_LEGACY:
 		return rockchip_pcie_ep_send_legacy_irq(ep, fn, 0);
-	case PCI_EPC_IRQ_MSI:
+	case PCI_IRQ_MSI:
 		return rockchip_pcie_ep_send_msi_irq(ep, fn, interrupt_num);
 	default:
 		return -EINVAL;
diff --git a/drivers/pci/endpoint/functions/pci-epf-mhi.c b/drivers/pci/endpoint/functions/pci-epf-mhi.c
index 9c1f5a154fbd..90b49e707392 100644
--- a/drivers/pci/endpoint/functions/pci-epf-mhi.c
+++ b/drivers/pci/endpoint/functions/pci-epf-mhi.c
@@ -177,7 +177,7 @@ static void pci_epf_mhi_raise_irq(struct mhi_ep_cntrl *mhi_cntrl, u32 vector)
 	 * MHI supplies 0 based MSI vectors but the API expects the vector
 	 * number to start from 1, so we need to increment the vector by 1.
 	 */
-	pci_epc_raise_irq(epc, epf->func_no, epf->vfunc_no, PCI_EPC_IRQ_MSI,
+	pci_epc_raise_irq(epc, epf->func_no, epf->vfunc_no, PCI_IRQ_MSI,
 			  vector + 1);
 }
 
diff --git a/drivers/pci/endpoint/functions/pci-epf-ntb.c b/drivers/pci/endpoint/functions/pci-epf-ntb.c
index 9aac2c6f3bb9..fad00b1a8335 100644
--- a/drivers/pci/endpoint/functions/pci-epf-ntb.c
+++ b/drivers/pci/endpoint/functions/pci-epf-ntb.c
@@ -140,9 +140,9 @@ static struct pci_epf_header epf_ntb_header = {
 static int epf_ntb_link_up(struct epf_ntb *ntb, bool link_up)
 {
 	enum pci_epc_interface_type type;
-	enum pci_epc_irq_type irq_type;
 	struct epf_ntb_epc *ntb_epc;
 	struct epf_ntb_ctrl *ctrl;
+	unsigned int irq_type;
 	struct pci_epc *epc;
 	u8 func_no, vfunc_no;
 	bool is_msix;
@@ -159,7 +159,7 @@ static int epf_ntb_link_up(struct epf_ntb *ntb, bool link_up)
 			ctrl->link_status |= LINK_STATUS_UP;
 		else
 			ctrl->link_status &= ~LINK_STATUS_UP;
-		irq_type = is_msix ? PCI_EPC_IRQ_MSIX : PCI_EPC_IRQ_MSI;
+		irq_type = is_msix ? PCI_IRQ_MSIX : PCI_IRQ_MSI;
 		ret = pci_epc_raise_irq(epc, func_no, vfunc_no, irq_type, 1);
 		if (ret) {
 			dev_err(&epc->dev,
diff --git a/drivers/pci/endpoint/functions/pci-epf-test.c b/drivers/pci/endpoint/functions/pci-epf-test.c
index 1f0d2b84296a..9d39fda5c348 100644
--- a/drivers/pci/endpoint/functions/pci-epf-test.c
+++ b/drivers/pci/endpoint/functions/pci-epf-test.c
@@ -602,7 +602,7 @@ static void pci_epf_test_raise_irq(struct pci_epf_test *epf_test,
 	switch (reg->irq_type) {
 	case IRQ_TYPE_LEGACY:
 		pci_epc_raise_irq(epc, epf->func_no, epf->vfunc_no,
-				  PCI_EPC_IRQ_LEGACY, 0);
+				  PCI_IRQ_INTX, 0);
 		break;
 	case IRQ_TYPE_MSI:
 		count = pci_epc_get_msi(epc, epf->func_no, epf->vfunc_no);
@@ -612,7 +612,7 @@ static void pci_epf_test_raise_irq(struct pci_epf_test *epf_test,
 			return;
 		}
 		pci_epc_raise_irq(epc, epf->func_no, epf->vfunc_no,
-				  PCI_EPC_IRQ_MSI, reg->irq_number);
+				  PCI_IRQ_MSI, reg->irq_number);
 		break;
 	case IRQ_TYPE_MSIX:
 		count = pci_epc_get_msix(epc, epf->func_no, epf->vfunc_no);
@@ -622,7 +622,7 @@ static void pci_epf_test_raise_irq(struct pci_epf_test *epf_test,
 			return;
 		}
 		pci_epc_raise_irq(epc, epf->func_no, epf->vfunc_no,
-				  PCI_EPC_IRQ_MSIX, reg->irq_number);
+				  PCI_IRQ_MSIX, reg->irq_number);
 		break;
 	default:
 		dev_err(dev, "Failed to raise IRQ, unknown type\n");
diff --git a/drivers/pci/endpoint/functions/pci-epf-vntb.c b/drivers/pci/endpoint/functions/pci-epf-vntb.c
index c8b423c3c26e..ba2fe0bb400a 100644
--- a/drivers/pci/endpoint/functions/pci-epf-vntb.c
+++ b/drivers/pci/endpoint/functions/pci-epf-vntb.c
@@ -1172,11 +1172,8 @@ static int vntb_epf_peer_db_set(struct ntb_dev *ndev, u64 db_bits)
 	func_no = ntb->epf->func_no;
 	vfunc_no = ntb->epf->vfunc_no;
 
-	ret = pci_epc_raise_irq(ntb->epf->epc,
-				func_no,
-				vfunc_no,
-				PCI_EPC_IRQ_MSI,
-				interrupt_num + 1);
+	ret = pci_epc_raise_irq(ntb->epf->epc, func_no, vfunc_no,
+				PCI_IRQ_MSI, interrupt_num + 1);
 	if (ret)
 		dev_err(&ntb->ntb.dev, "Failed to raise IRQ\n");
 
diff --git a/drivers/pci/endpoint/pci-epc-core.c b/drivers/pci/endpoint/pci-epc-core.c
index 5a4a8b0be626..c80d06db4249 100644
--- a/drivers/pci/endpoint/pci-epc-core.c
+++ b/drivers/pci/endpoint/pci-epc-core.c
@@ -217,7 +217,7 @@ EXPORT_SYMBOL_GPL(pci_epc_start);
  * Invoke to raise an legacy, MSI or MSI-X interrupt
  */
 int pci_epc_raise_irq(struct pci_epc *epc, u8 func_no, u8 vfunc_no,
-		      enum pci_epc_irq_type type, u16 interrupt_num)
+		      unsigned int type, u16 interrupt_num)
 {
 	int ret;
 
diff --git a/include/linux/pci-epc.h b/include/linux/pci-epc.h
index 5cb694031072..f498f9aa2ab0 100644
--- a/include/linux/pci-epc.h
+++ b/include/linux/pci-epc.h
@@ -19,13 +19,6 @@ enum pci_epc_interface_type {
 	SECONDARY_INTERFACE,
 };
 
-enum pci_epc_irq_type {
-	PCI_EPC_IRQ_UNKNOWN,
-	PCI_EPC_IRQ_LEGACY,
-	PCI_EPC_IRQ_MSI,
-	PCI_EPC_IRQ_MSIX,
-};
-
 static inline const char *
 pci_epc_interface_string(enum pci_epc_interface_type type)
 {
@@ -79,7 +72,7 @@ struct pci_epc_ops {
 			    u16 interrupts, enum pci_barno, u32 offset);
 	int	(*get_msix)(struct pci_epc *epc, u8 func_no, u8 vfunc_no);
 	int	(*raise_irq)(struct pci_epc *epc, u8 func_no, u8 vfunc_no,
-			     enum pci_epc_irq_type type, u16 interrupt_num);
+			     unsigned int type, u16 interrupt_num);
 	int	(*map_msi_irq)(struct pci_epc *epc, u8 func_no, u8 vfunc_no,
 			       phys_addr_t phys_addr, u8 interrupt_num,
 			       u32 entry_size, u32 *msi_data,
@@ -229,7 +222,7 @@ int pci_epc_map_msi_irq(struct pci_epc *epc, u8 func_no, u8 vfunc_no,
 			phys_addr_t phys_addr, u8 interrupt_num,
 			u32 entry_size, u32 *msi_data, u32 *msi_addr_offset);
 int pci_epc_raise_irq(struct pci_epc *epc, u8 func_no, u8 vfunc_no,
-		      enum pci_epc_irq_type type, u16 interrupt_num);
+		      unsigned int type, u16 interrupt_num);
 int pci_epc_start(struct pci_epc *epc);
 void pci_epc_stop(struct pci_epc *epc);
 const struct pci_epc_features *pci_epc_get_features(struct pci_epc *epc,
-- 
2.41.0

RE: [PATCH 0/2] Cleanup IRQ type definitions

[Yoshihiro Shimoda]

Hello Damien,

> From: Damien Le Moal, Sent: Monday, July 31, 2023 10:26 AM
> 
> The first patch renames PCI_IRQ_LEGACY to PCI_IRQ_INTX as suggested by
> Bjorn (hence the patch authorship is given to him).
> 
> The second patch removes the redundant IRQ type definitions
> PCI_EPC_IRQ_XXX and replace these with a direct use of the PCI_IRQ_XXX
> definitions. Going forward, more cleanups renaming "legacy" to "intx"
> in various drivers can be added on top of this series.

Thank you for the patches! For the patches:

Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>

Best regards,
Yoshihiro Shimoda

> Bjorn Helgaas (1):
>   PCI: Rename PCI_IRQ_LEGACY to PCI_IRQ_INTX
> 
> Damien Le Moal (1):
>   PCI: endpoint: Drop PCI_EPC_IRQ_XXX definitions
> 
>  drivers/pci/controller/cadence/pcie-cadence-ep.c  |  9 ++++-----
>  drivers/pci/controller/dwc/pci-dra7xx.c           |  6 +++---
>  drivers/pci/controller/dwc/pci-imx6.c             |  9 ++++-----
>  drivers/pci/controller/dwc/pci-keystone.c         |  9 ++++-----
>  drivers/pci/controller/dwc/pci-layerscape-ep.c    |  8 ++++----
>  drivers/pci/controller/dwc/pcie-artpec6.c         |  8 ++++----
>  drivers/pci/controller/dwc/pcie-designware-ep.c   |  2 +-
>  drivers/pci/controller/dwc/pcie-designware-plat.c |  9 ++++-----
>  drivers/pci/controller/dwc/pcie-designware.h      |  2 +-
>  drivers/pci/controller/dwc/pcie-keembay.c         | 13 ++++++-------
>  drivers/pci/controller/dwc/pcie-qcom-ep.c         |  6 +++---
>  drivers/pci/controller/dwc/pcie-tegra194.c        |  9 ++++-----
>  drivers/pci/controller/dwc/pcie-uniphier-ep.c     |  7 +++----
>  drivers/pci/controller/pcie-rcar-ep.c             |  7 +++----
>  drivers/pci/controller/pcie-rockchip-ep.c         |  7 +++----
>  drivers/pci/endpoint/functions/pci-epf-mhi.c      |  2 +-
>  drivers/pci/endpoint/functions/pci-epf-ntb.c      |  4 ++--
>  drivers/pci/endpoint/functions/pci-epf-test.c     |  6 +++---
>  drivers/pci/endpoint/functions/pci-epf-vntb.c     |  7 ++-----
>  drivers/pci/endpoint/pci-epc-core.c               |  2 +-
>  include/linux/pci-epc.h                           | 11 ++---------
>  include/linux/pci.h                               |  4 +++-
>  22 files changed, 65 insertions(+), 82 deletions(-)
> 
> --
> 2.41.0

Re: [PATCH 1/2] PCI: Rename PCI_IRQ_LEGACY to PCI_IRQ_INTX

[Bjorn Helgaas]

[+cc Krzysztof]

On Mon, Jul 31, 2023 at 10:25:49AM +0900, Damien Le Moal wrote:
> From: Bjorn Helgaas <helgaas@kernel.org>
> 
> Rename PCI_IRQ_LEGACY to PCI_IRQ_INTX to be more explicit about the type
> of IRQ being referenced as well as to match the PCI specifications
> terms. The macro PCI_IRQ_LEGACY is redefined as an alias to PCI_IRQ_INTX
> to avoid the need for doing the renaming tree-wide. New drivers and new
> code should now prefer using PCI_IRQ_INTX instead of PCI_IRQ_LEGACY.
> 
> Signed-off-by: Bjorn Helgaas <helgaas@kernel.org>

Looks good to me, but instead of the kernel.org address, please use:

  Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

Also:

  Redefine PCI_IRQ_LEGACY as an alias to PCI_IRQ_INTX to avoid the
  need for doing the renaming tree-wide.

ISTR other pci/controller/ patches that may come on top of these?  If
so, probably makes sense for Krzysztof to apply these?

> Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
> ---
>  include/linux/pci.h | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/include/linux/pci.h b/include/linux/pci.h
> index 0ff7500772e6..7692d73719e0 100644
> --- a/include/linux/pci.h
> +++ b/include/linux/pci.h
> @@ -1048,11 +1048,13 @@ enum {
>  	PCI_SCAN_ALL_PCIE_DEVS	= 0x00000040,	/* Scan all, not just dev 0 */
>  };
>  
> -#define PCI_IRQ_LEGACY		(1 << 0) /* Allow legacy interrupts */
> +#define PCI_IRQ_INTX		(1 << 0) /* Allow INTx interrupts */
>  #define PCI_IRQ_MSI		(1 << 1) /* Allow MSI interrupts */
>  #define PCI_IRQ_MSIX		(1 << 2) /* Allow MSI-X interrupts */
>  #define PCI_IRQ_AFFINITY	(1 << 3) /* Auto-assign affinity */
>  
> +#define PCI_IRQ_LEGACY		PCI_IRQ_INTX	/* prefer PCI_IRQ_INTX */
> +
>  /* These external functions are only available when PCI support is enabled */
>  #ifdef CONFIG_PCI
>  
> -- 
> 2.41.0
>