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arm: add an interrupt rman to nexus

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Allow the nexus bus to own and manage interrupt resources. Currently,
interrupt resources on this architecture are managed completely by
ofwbus, but it is desirable that system-wide memory and interrupt
resources be managed by the top-level bus.

This is a pre-requisite to moving this resource management out of
ofwbus.

Reviewed By:	ian, Elliott Mitchell <ehem+freebsd@m5p.com>
MFC after:	1 month
Differential Revision: https://reviews.freebsd.org/D32357
This commit is contained in:
Mitchell Horne 2021-12-05 11:27:50 -04:00
parent 48bfd35976
commit 1d03c3578d
1 changed files with 11 additions and 0 deletions
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11
sys/arm/arm/nexus.c
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@ -77,6 +77,7 @@ struct nexus_device {
#define DEVTONX(dev) ((struct nexus_device *)device_get_ivars(dev))
static struct rman mem_rman;
static struct rman irq_rman;
static int nexus_probe(device_t);
static int nexus_attach(device_t);
@ -171,6 +172,12 @@ nexus_attach(device_t dev)
if (rman_init(&mem_rman) ||
rman_manage_region(&mem_rman, 0, BUS_SPACE_MAXADDR))
panic("nexus_probe mem_rman");
irq_rman.rm_start = 0;
irq_rman.rm_end = ~0;
irq_rman.rm_type = RMAN_ARRAY;
irq_rman.rm_descr = "Interrupts";
if (rman_init(&irq_rman) || rman_manage_region(&irq_rman, 0, ~0))
panic("nexus_attach irq_rman");
/*
* First, deal with the children we know about already
@ -227,6 +234,10 @@ nexus_alloc_resource(device_t bus, device_t child, int type, int *rid,
flags &= ~RF_ACTIVE;
switch (type) {
case SYS_RES_IRQ:
rm = &irq_rman;
break;
case SYS_RES_MEMORY:
case SYS_RES_IOPORT:
rm = &mem_rman;