openwrt/target/linux/layerscape/patches-5.4/809-jailhouse-0005-ivshmem-net-Enable-INTx.patch
Yangbo Lu cddd459140 layerscape: add patches-5.4
Add patches for linux-5.4. The patches are from NXP LSDK-20.04 release
which was tagged LSDK-20.04-V5.4.
https://source.codeaurora.org/external/qoriq/qoriq-components/linux/

For boards LS1021A-IOT, and Traverse-LS1043 which are not involved in
LSDK, port the dts patches from 4.14.

The patches are sorted into the following categories:
  301-arch-xxxx
  302-dts-xxxx
  303-core-xxxx
  701-net-xxxx
  801-audio-xxxx
  802-can-xxxx
  803-clock-xxxx
  804-crypto-xxxx
  805-display-xxxx
  806-dma-xxxx
  807-gpio-xxxx
  808-i2c-xxxx
  809-jailhouse-xxxx
  810-keys-xxxx
  811-kvm-xxxx
  812-pcie-xxxx
  813-pm-xxxx
  814-qe-xxxx
  815-sata-xxxx
  816-sdhc-xxxx
  817-spi-xxxx
  818-thermal-xxxx
  819-uart-xxxx
  820-usb-xxxx
  821-vfio-xxxx

Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
2020-05-07 12:53:06 +02:00

52 lines
1.4 KiB
Diff

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);
}