diff options
Diffstat (limited to 'target/linux/layerscape/patches-5.4/809-jailhouse-0005-ivshmem-net-Enable-INTx.patch')
| -rw-r--r-- | target/linux/layerscape/patches-5.4/809-jailhouse-0005-ivshmem-net-Enable-INTx.patch | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/target/linux/layerscape/patches-5.4/809-jailhouse-0005-ivshmem-net-Enable-INTx.patch b/target/linux/layerscape/patches-5.4/809-jailhouse-0005-ivshmem-net-Enable-INTx.patch new file mode 100644 index 0000000000..d87256757f --- /dev/null +++ b/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); + } + |