diff options
Diffstat (limited to 'drivers/parisc/gsc.c')
| -rw-r--r-- | drivers/parisc/gsc.c | 54 |
1 files changed, 34 insertions, 20 deletions
diff --git a/drivers/parisc/gsc.c b/drivers/parisc/gsc.c index 1bab5a2cd359..8ba778170447 100644 --- a/drivers/parisc/gsc.c +++ b/drivers/parisc/gsc.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * Interrupt management for most GSC and related devices. * @@ -6,11 +7,6 @@ * (c) Copyright 1999 Matthew Wilcox * (c) Copyright 2000 Helge Deller * (c) Copyright 2001 Matthew Wilcox for Hewlett-Packard - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. */ #include <linux/bitops.h> @@ -139,10 +135,43 @@ static void gsc_asic_unmask_irq(struct irq_data *d) */ } +#ifdef CONFIG_SMP +static int gsc_set_affinity_irq(struct irq_data *d, const struct cpumask *dest, + bool force) +{ + struct gsc_asic *gsc_dev = irq_data_get_irq_chip_data(d); + struct cpumask tmask; + int cpu_irq; + + if (!cpumask_and(&tmask, dest, cpu_online_mask)) + return -EINVAL; + + cpu_irq = cpu_check_affinity(d, &tmask); + if (cpu_irq < 0) + return cpu_irq; + + gsc_dev->gsc_irq.txn_addr = txn_affinity_addr(d->irq, cpu_irq); + gsc_dev->eim = ((u32) gsc_dev->gsc_irq.txn_addr) | gsc_dev->gsc_irq.txn_data; + + /* switch IRQ's for devices below LASI/WAX to other CPU */ + /* ASP chip (svers 0x70) does not support reprogramming */ + if (gsc_dev->gsc->id.sversion != 0x70) + gsc_writel(gsc_dev->eim, gsc_dev->hpa + OFFSET_IAR); + + irq_data_update_effective_affinity(d, &tmask); + + return IRQ_SET_MASK_OK; +} +#endif + + static struct irq_chip gsc_asic_interrupt_type = { .name = "GSC-ASIC", .irq_unmask = gsc_asic_unmask_irq, .irq_mask = gsc_asic_mask_irq, +#ifdef CONFIG_SMP + .irq_set_affinity = gsc_set_affinity_irq, +#endif }; int gsc_assign_irq(struct irq_chip *type, void *data) @@ -231,18 +260,3 @@ int gsc_common_setup(struct parisc_device *parent, struct gsc_asic *gsc_asic) return 0; } - -extern struct parisc_driver lasi_driver; -extern struct parisc_driver asp_driver; -extern struct parisc_driver wax_driver; - -void __init gsc_init(void) -{ -#ifdef CONFIG_GSC_LASI - register_parisc_driver(&lasi_driver); - register_parisc_driver(&asp_driver); -#endif -#ifdef CONFIG_GSC_WAX - register_parisc_driver(&wax_driver); -#endif -} |