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[src/trunk]: src/sys/arch/arm/cortex Implement pic_get_affinity/pic_set_affin...
details: https://anonhg.NetBSD.org/src/rev/b6631202406f
branches: trunk
changeset: 836865:b6631202406f
user: jmcneill <jmcneill%NetBSD.org@localhost>
date: Sat Nov 10 01:56:28 2018 +0000
description:
Implement pic_get_affinity/pic_set_affinity for SPIs
diffstat:
sys/arch/arm/cortex/gicv3.c | 90 +++++++++++++++++++++++++++++++++++++--------
sys/arch/arm/cortex/gicv3.h | 4 +-
2 files changed, 76 insertions(+), 18 deletions(-)
diffs (169 lines):
diff -r f3706ec812cc -r b6631202406f sys/arch/arm/cortex/gicv3.c
--- a/sys/arch/arm/cortex/gicv3.c Sat Nov 10 01:44:26 2018 +0000
+++ b/sys/arch/arm/cortex/gicv3.c Sat Nov 10 01:56:28 2018 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: gicv3.c,v 1.5 2018/11/09 23:36:24 jmcneill Exp $ */
+/* $NetBSD: gicv3.c,v 1.6 2018/11/10 01:56:28 jmcneill Exp $ */
/*-
* Copyright (c) 2018 Jared McNeill <jmcneill%invisible.ca@localhost>
@@ -31,7 +31,7 @@
#define _INTR_PRIVATE
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: gicv3.c,v 1.5 2018/11/09 23:36:24 jmcneill Exp $");
+__KERNEL_RCSID(0, "$NetBSD: gicv3.c,v 1.6 2018/11/10 01:56:28 jmcneill Exp $");
#include <sys/param.h>
#include <sys/kernel.h>
@@ -68,6 +68,12 @@
bus_space_write_4(sc->sc_bst, sc->sc_bsh_d, reg, val);
}
+static inline uint64_t
+gicd_read_8(struct gicv3_softc *sc, bus_size_t reg)
+{
+ return bus_space_read_8(sc->sc_bst, sc->sc_bsh_d, reg);
+}
+
static inline void
gicd_write_8(struct gicv3_softc *sc, bus_size_t reg, uint64_t val)
{
@@ -177,7 +183,7 @@
irouter = GICD_IROUTER_Interrupt_Routing_mode;
} else {
/* Route non-MP-safe interrupts to the primary PE only */
- irouter = sc->sc_default_irouter;
+ irouter = sc->sc_irouter[0];
}
gicd_write_8(sc, GICD_IROUTER(is->is_irq), irouter);
@@ -365,19 +371,17 @@
ci->ci_gic_redist = gicv3_find_redist(sc);
ci->ci_gic_sgir = gicv3_sgir(sc);
- if (CPU_IS_PRIMARY(ci)) {
- /* Store route to primary CPU for non-MPSAFE SPIs */
- const uint64_t cpu_identity = gicv3_cpu_identity();
- const u_int aff0 = __SHIFTOUT(cpu_identity, GICR_TYPER_Affinity_Value_Aff0);
- const u_int aff1 = __SHIFTOUT(cpu_identity, GICR_TYPER_Affinity_Value_Aff1);
- const u_int aff2 = __SHIFTOUT(cpu_identity, GICR_TYPER_Affinity_Value_Aff2);
- const u_int aff3 = __SHIFTOUT(cpu_identity, GICR_TYPER_Affinity_Value_Aff3);
- sc->sc_default_irouter =
- __SHIFTIN(aff0, GICD_IROUTER_Aff0) |
- __SHIFTIN(aff1, GICD_IROUTER_Aff1) |
- __SHIFTIN(aff2, GICD_IROUTER_Aff2) |
- __SHIFTIN(aff3, GICD_IROUTER_Aff3);
- }
+ /* Store route to CPU for SPIs */
+ const uint64_t cpu_identity = gicv3_cpu_identity();
+ const u_int aff0 = __SHIFTOUT(cpu_identity, GICR_TYPER_Affinity_Value_Aff0);
+ const u_int aff1 = __SHIFTOUT(cpu_identity, GICR_TYPER_Affinity_Value_Aff1);
+ const u_int aff2 = __SHIFTOUT(cpu_identity, GICR_TYPER_Affinity_Value_Aff2);
+ const u_int aff3 = __SHIFTOUT(cpu_identity, GICR_TYPER_Affinity_Value_Aff3);
+ sc->sc_irouter[cpu_index(ci)] =
+ __SHIFTIN(aff0, GICD_IROUTER_Aff0) |
+ __SHIFTIN(aff1, GICD_IROUTER_Aff1) |
+ __SHIFTIN(aff2, GICD_IROUTER_Aff2) |
+ __SHIFTIN(aff3, GICD_IROUTER_Aff3);
/* Enable System register access and disable IRQ/FIQ bypass */
icc_sre = ICC_SRE_EL1_SRE | ICC_SRE_EL1_DFB | ICC_SRE_EL1_DIB;
@@ -446,6 +450,54 @@
icc_sgi1r_write(intid | aff | targets);
}
}
+
+static void
+gicv3_get_affinity(struct pic_softc *pic, size_t irq, kcpuset_t *affinity)
+{
+ struct gicv3_softc * const sc = PICTOSOFTC(pic);
+ const size_t group = irq / 32;
+ int n;
+
+ kcpuset_zero(affinity);
+ if (group == 0) {
+ /* All CPUs are targets for group 0 (SGI/PPI) */
+ for (n = 0; n < ncpu; n++) {
+ if (sc->sc_irouter[n] != UINT64_MAX)
+ kcpuset_set(affinity, n);
+ }
+ } else {
+ /* Find distributor targets (SPI) */
+ const uint64_t irouter = gicd_read_8(sc, GICD_IROUTER(irq));
+ for (n = 0; n < ncpu; n++) {
+ if (irouter == GICD_IROUTER_Interrupt_Routing_mode ||
+ irouter == sc->sc_irouter[n])
+ kcpuset_set(affinity, n);
+ }
+ }
+}
+
+static int
+gicv3_set_affinity(struct pic_softc *pic, size_t irq, const kcpuset_t *affinity)
+{
+ struct gicv3_softc * const sc = PICTOSOFTC(pic);
+ const size_t group = irq / 32;
+ uint64_t irouter;
+
+ if (group == 0)
+ return EINVAL;
+
+ const int set = kcpuset_countset(affinity);
+ if (set == ncpu)
+ irouter = GICD_IROUTER_Interrupt_Routing_mode;
+ else if (set == 1)
+ irouter = sc->sc_irouter[kcpuset_ffs(affinity)];
+ else
+ return EINVAL;
+
+ gicd_write_8(sc, GICD_IROUTER(irq), irouter);
+
+ return 0;
+}
#endif
static const struct pic_ops gicv3_picops = {
@@ -456,6 +508,8 @@
#ifdef MULTIPROCESSOR
.pic_cpu_init = gicv3_cpu_init,
.pic_ipi_send = gicv3_ipi_send,
+ .pic_get_affinity = gicv3_get_affinity,
+ .pic_set_affinity = gicv3_set_affinity,
#endif
};
@@ -637,11 +691,15 @@
gicv3_init(struct gicv3_softc *sc)
{
const uint32_t gicd_typer = gicd_read_4(sc, GICD_TYPER);
+ int n;
KASSERT(CPU_IS_PRIMARY(curcpu()));
LIST_INIT(&sc->sc_cpu_init);
+ for (n = 0; n < MAXCPUS; n++)
+ sc->sc_irouter[n] = UINT64_MAX;
+
sc->sc_pic.pic_ops = &gicv3_picops;
sc->sc_pic.pic_maxsources = GICD_TYPER_LINES(gicd_typer);
snprintf(sc->sc_pic.pic_name, sizeof(sc->sc_pic.pic_name), "gicv3");
diff -r f3706ec812cc -r b6631202406f sys/arch/arm/cortex/gicv3.h
--- a/sys/arch/arm/cortex/gicv3.h Sat Nov 10 01:44:26 2018 +0000
+++ b/sys/arch/arm/cortex/gicv3.h Sat Nov 10 01:56:28 2018 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: gicv3.h,v 1.2 2018/11/09 23:36:24 jmcneill Exp $ */
+/* $NetBSD: gicv3.h,v 1.3 2018/11/10 01:56:28 jmcneill Exp $ */
/*-
* Copyright (c) 2018 Jared McNeill <jmcneill%invisible.ca@localhost>
@@ -58,7 +58,7 @@
u_int sc_bsh_r_count;
uint32_t sc_enabled_sgippi;
- uint64_t sc_default_irouter;
+ uint64_t sc_irouter[MAXCPUS];
/* LPI configuration table */
struct gicv3_dma sc_lpiconf;
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