Initial commit

target/linux/layerscape/patches-5.4/809-jailhouse-0005-ivshmem-net-Enable-INTx.patch

@@ -0,0 +1,51 @@
+From 3734c2c9ac0fd763deceb686efc93b293acca4c6 Mon Sep 17 00:00:00 2001
+From: Jan Kiszka <jan.kiszka@siemens.com>
+Date: Sun, 27 Nov 2016 15:15:51 +0100
+Subject: [PATCH] ivshmem-net: Enable INTx
+
+Activate INTx notification when it has to be used instead of MSI-X,
+disable it after use.
+
+Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
+(cherry picked from commit 8790717bdca6ea58f18baac1749ac347b23b7263)
+---
+ drivers/net/ivshmem-net.c | 7 ++++++-
+ 1 file changed, 6 insertions(+), 1 deletion(-)
+
+--- a/drivers/net/ivshmem-net.c
++++ b/drivers/net/ivshmem-net.c
+@@ -31,6 +31,8 @@
+ #define JAILHOUSE_CFG_SHMEM_PTR	0x40
+ #define JAILHOUSE_CFG_SHMEM_SZ	0x48
+ 
++#define IVSHMEM_INTX_ENABLE	0x1
++
+ #define IVSHM_NET_STATE_RESET	0
+ #define IVSHM_NET_STATE_INIT	1
+ #define IVSHM_NET_STATE_READY	2
+@@ -47,7 +49,7 @@
+ #define IVSHM_NET_VQ_ALIGN 64
+ 
+ struct ivshmem_regs {
+-	u32 imask;
++	u32 intxctrl;
+ 	u32 istat;
+ 	u32 ivpos;
+ 	u32 doorbell;
+@@ -869,6 +871,8 @@ static int ivshm_net_probe(struct pci_de
+ 		goto err_int;
+ 
+ 	pci_set_master(pdev);
++	if (!in->using_msix)
++		writel(IVSHMEM_INTX_ENABLE, &in->ivshm_regs->intxctrl);
+ 
+ 	writel(IVSHM_NET_STATE_RESET, &in->ivshm_regs->lstate);
+ 
+@@ -895,6 +899,7 @@ static void ivshm_net_remove(struct pci_
+ 		free_irq(in->msix.vector, ndev);
+ 		pci_disable_msix(pdev);
+ 	} else {
++		writel(0, &in->ivshm_regs->intxctrl);
+ 		free_irq(pdev->irq, ndev);
+ 	}
+