Module Name: src
Committed By: jmcneill
Date: Thu Feb 13 00:42:59 UTC 2020
Modified Files:
src/sys/arch/arm/cortex: gicv3.c gicv3.h gicv3_its.c
Log Message:
Since all ITS instances share a common LPI configuration table, used a
shared vmem arena to allocate pic irqs. Idea from FreeBSD.
To generate a diff of this commit:
cvs rdiff -u -r1.22 -r1.23 src/sys/arch/arm/cortex/gicv3.c
cvs rdiff -u -r1.7 -r1.8 src/sys/arch/arm/cortex/gicv3.h
cvs rdiff -u -r1.25 -r1.26 src/sys/arch/arm/cortex/gicv3_its.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/cortex/gicv3.c
diff -u src/sys/arch/arm/cortex/gicv3.c:1.22 src/sys/arch/arm/cortex/gicv3.c:1.23
--- src/sys/arch/arm/cortex/gicv3.c:1.22 Tue Dec 24 09:12:56 2019
+++ src/sys/arch/arm/cortex/gicv3.c Thu Feb 13 00:42:59 2020
@@ -1,4 +1,4 @@
-/* $NetBSD: gicv3.c,v 1.22 2019/12/24 09:12:56 skrll Exp $ */
+/* $NetBSD: gicv3.c,v 1.23 2020/02/13 00:42:59 jmcneill Exp $ */
/*-
* Copyright (c) 2018 Jared McNeill <jmcne...@invisible.ca>
@@ -31,7 +31,7 @@
#define _INTR_PRIVATE
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: gicv3.c,v 1.22 2019/12/24 09:12:56 skrll Exp $");
+__KERNEL_RCSID(0, "$NetBSD: gicv3.c,v 1.23 2020/02/13 00:42:59 jmcneill Exp $");
#include <sys/param.h>
#include <sys/kernel.h>
@@ -40,6 +40,7 @@ __KERNEL_RCSID(0, "$NetBSD: gicv3.c,v 1.
#include <sys/intr.h>
#include <sys/systm.h>
#include <sys/cpu.h>
+#include <sys/vmem.h>
#include <machine/cpufunc.h>
@@ -828,6 +829,11 @@ gicv3_init(struct gicv3_softc *sc)
snprintf(sc->sc_lpi.pic_name, sizeof(sc->sc_lpi.pic_name), "gicv3-lpi");
pic_add(&sc->sc_lpi, GIC_LPI_BASE);
+ sc->sc_lpi_pool = vmem_create("gicv3-lpi", 0, sc->sc_lpi.pic_maxsources,
+ 1, NULL, NULL, NULL, 0, VM_SLEEP, IPL_HIGH);
+ if (sc->sc_lpi_pool == NULL)
+ panic("failed to create gicv3 lpi pool\n");
+
gicv3_lpi_init(sc);
}
Index: src/sys/arch/arm/cortex/gicv3.h
diff -u src/sys/arch/arm/cortex/gicv3.h:1.7 src/sys/arch/arm/cortex/gicv3.h:1.8
--- src/sys/arch/arm/cortex/gicv3.h:1.7 Sun Jun 30 11:11:38 2019
+++ src/sys/arch/arm/cortex/gicv3.h Thu Feb 13 00:42:59 2020
@@ -1,4 +1,4 @@
-/* $NetBSD: gicv3.h,v 1.7 2019/06/30 11:11:38 jmcneill Exp $ */
+/* $NetBSD: gicv3.h,v 1.8 2020/02/13 00:42:59 jmcneill Exp $ */
/*-
* Copyright (c) 2018 Jared McNeill <jmcne...@invisible.ca>
@@ -30,6 +30,7 @@
#define _ARM_CORTEX_GICV3_H
#include <sys/intr.h>
+#include <sys/vmem.h>
struct gicv3_dma {
bus_dma_segment_t segs[1];
@@ -73,6 +74,9 @@ struct gicv3_softc {
/* LPI pending tables */
struct gicv3_dma sc_lpipend[MAXCPUS];
+ /* LPI IDs */
+ vmem_t *sc_lpi_pool;
+
/* Unique identifier for PEs */
u_int sc_processor_id[MAXCPUS];
Index: src/sys/arch/arm/cortex/gicv3_its.c
diff -u src/sys/arch/arm/cortex/gicv3_its.c:1.25 src/sys/arch/arm/cortex/gicv3_its.c:1.26
--- src/sys/arch/arm/cortex/gicv3_its.c:1.25 Sat Feb 1 15:33:48 2020
+++ src/sys/arch/arm/cortex/gicv3_its.c Thu Feb 13 00:42:59 2020
@@ -1,4 +1,4 @@
-/* $NetBSD: gicv3_its.c,v 1.25 2020/02/01 15:33:48 jmcneill Exp $ */
+/* $NetBSD: gicv3_its.c,v 1.26 2020/02/13 00:42:59 jmcneill Exp $ */
/*-
* Copyright (c) 2018 The NetBSD Foundation, Inc.
@@ -32,7 +32,7 @@
#define _INTR_PRIVATE
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: gicv3_its.c,v 1.25 2020/02/01 15:33:48 jmcneill Exp $");
+__KERNEL_RCSID(0, "$NetBSD: gicv3_its.c,v 1.26 2020/02/13 00:42:59 jmcneill Exp $");
#include <sys/param.h>
#include <sys/kmem.h>
@@ -284,18 +284,19 @@ gicv3_its_msi_alloc_lpi(struct gicv3_its
const struct pci_attach_args *pa)
{
struct pci_attach_args *new_pa;
- int n;
+ vmem_addr_t n;
- for (n = 0; n < its->its_pic->pic_maxsources; n++) {
- if (its->its_pa[n] == NULL) {
- new_pa = kmem_alloc(sizeof(*new_pa), KM_SLEEP);
- memcpy(new_pa, pa, sizeof(*new_pa));
- its->its_pa[n] = new_pa;
- return n + its->its_pic->pic_irqbase;
- }
- }
+ KASSERT(its->its_gic->sc_lpi_pool != NULL);
- return -1;
+ if (vmem_alloc(its->its_gic->sc_lpi_pool, 1, VM_INSTANTFIT|VM_SLEEP, &n) != 0)
+ return -1;
+
+ KASSERT(its->its_pa[n] == NULL);
+
+ new_pa = kmem_alloc(sizeof(*new_pa), KM_SLEEP);
+ memcpy(new_pa, pa, sizeof(*new_pa));
+ its->its_pa[n] = new_pa;
+ return n + its->its_pic->pic_irqbase;
}
static void
@@ -303,11 +304,14 @@ gicv3_its_msi_free_lpi(struct gicv3_its
{
struct pci_attach_args *pa;
+ KASSERT(its->its_gic->sc_lpi_pool != NULL);
KASSERT(lpi >= its->its_pic->pic_irqbase);
pa = its->its_pa[lpi - its->its_pic->pic_irqbase];
its->its_pa[lpi - its->its_pic->pic_irqbase] = NULL;
kmem_free(pa, sizeof(*pa));
+
+ vmem_free(its->its_gic->sc_lpi_pool, lpi - its->its_pic->pic_irqbase, 1);
}
static uint32_t
