Module Name: src
Committed By: jakllsch
Date: Tue Nov 17 00:08:33 UTC 2015
Modified Files:
src/sys/arch/arm/nvidia: tegra_pcie.c
Log Message:
Do not clear the PCIe interrupt until we've allowed its cause to become
deasserted. This halves the PCIe interrupt rate.
To generate a diff of this commit:
cvs rdiff -u -r1.10 -r1.11 src/sys/arch/arm/nvidia/tegra_pcie.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/arch/arm/nvidia/tegra_pcie.c
diff -u src/sys/arch/arm/nvidia/tegra_pcie.c:1.10 src/sys/arch/arm/nvidia/tegra_pcie.c:1.11
--- src/sys/arch/arm/nvidia/tegra_pcie.c:1.10 Sat Nov 14 03:44:52 2015
+++ src/sys/arch/arm/nvidia/tegra_pcie.c Tue Nov 17 00:08:33 2015
@@ -1,4 +1,4 @@
-/* $NetBSD: tegra_pcie.c,v 1.10 2015/11/14 03:44:52 jakllsch Exp $ */
+/* $NetBSD: tegra_pcie.c,v 1.11 2015/11/17 00:08:33 jakllsch Exp $ */
/*-
* Copyright (c) 2015 Jared D. McNeill <[email protected]>
@@ -29,7 +29,7 @@
#include "locators.h"
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: tegra_pcie.c,v 1.10 2015/11/14 03:44:52 jakllsch Exp $");
+__KERNEL_RCSID(0, "$NetBSD: tegra_pcie.c,v 1.11 2015/11/17 00:08:33 jakllsch Exp $");
#include <sys/param.h>
#include <sys/bus.h>
@@ -237,21 +237,27 @@ static int
tegra_pcie_intr(void *priv)
{
struct tegra_pcie_softc *sc = priv;
+ int rv;
const uint32_t code = bus_space_read_4(sc->sc_bst, sc->sc_bsh_afi,
AFI_INTR_CODE_REG);
const uint32_t sig = bus_space_read_4(sc->sc_bst, sc->sc_bsh_afi,
AFI_INTR_SIGNATURE_REG);
- bus_space_write_4(sc->sc_bst, sc->sc_bsh_afi, AFI_INTR_CODE_REG, 0);
switch (__SHIFTOUT(code, AFI_INTR_CODE_INT_CODE)) {
case AFI_INTR_CODE_SM_MSG:
- return tegra_pcie_legacy_intr(sc);
+ rv = tegra_pcie_legacy_intr(sc);
+ break;
default:
device_printf(sc->sc_dev, "intr: code %#x sig %#x\n",
code, sig);
- return 1;
+ rv = 1;
+ break;
}
+
+ bus_space_write_4(sc->sc_bst, sc->sc_bsh_afi, AFI_INTR_CODE_REG, 0);
+
+ return rv;
}
static void
