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irqchip/riscv-imsic: Set irq_set_affinity() for IMSIC base

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The IMSIC driver assigns the IMSIC domain specific imsic_irq_set_affinity()
callback to the per device leaf MSI domain. That's a layering violation as
it is called with the leaf domain data and not with the IMSIC domain
data. This prevents moving the IMSIC driver to the common MSI library which
uses the generic msi_domain_set_affinity() callback for device MSI domains.

Instead of using imsic_irq_set_affinity() for leaf MSI domains, use
imsic_irq_set_affinity() for the non-leaf IMSIC base domain and use
irq_chip_set_affinity_parent() for leaf MSI domains.

[ tglx: Massaged change log ]

Signed-off-by: Andrew Jones <ajones@ventanamicro.com>
Signed-off-by: Anup Patel <apatel@ventanamicro.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/all/20250217085657.789309-2-apatel@ventanamicro.com
This commit is contained in:
Andrew Jones 2025-02-17 14:26:47 +05:30 committed by Thomas Gleixner
parent 0699e578e2
commit 999f458c17
1 changed files with 9 additions and 7 deletions
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16
drivers/irqchip/irq-riscv-imsic-platform.c
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@ -96,9 +96,8 @@ static int imsic_irq_set_affinity(struct irq_data *d, const struct cpumask *mask
bool force)
{
struct imsic_vector *old_vec, *new_vec;
struct irq_data *pd = d->parent_data;
old_vec = irq_data_get_irq_chip_data(pd);
old_vec = irq_data_get_irq_chip_data(d);
if (WARN_ON(!old_vec))
return -ENOENT;
@ -116,13 +115,13 @@ static int imsic_irq_set_affinity(struct irq_data *d, const struct cpumask *mask
return -ENOSPC;
/* Point device to the new vector */
imsic_msi_update_msg(d, new_vec);
imsic_msi_update_msg(irq_get_irq_data(d->irq), new_vec);
/* Update irq descriptors with the new vector */
pd->chip_data = new_vec;
d->chip_data = new_vec;
/* Update effective affinity of parent irq data */
irq_data_update_effective_affinity(pd, cpumask_of(new_vec->cpu));
/* Update effective affinity */
irq_data_update_effective_affinity(d, cpumask_of(new_vec->cpu));
/* Move state of the old vector to the new vector */
imsic_vector_move(old_vec, new_vec);
@ -135,6 +134,9 @@ static struct irq_chip imsic_irq_base_chip = {
.name = "IMSIC",
.irq_mask = imsic_irq_mask,
.irq_unmask = imsic_irq_unmask,
#ifdef CONFIG_SMP
.irq_set_affinity = imsic_irq_set_affinity,
#endif
.irq_retrigger = imsic_irq_retrigger,
.irq_compose_msi_msg = imsic_irq_compose_msg,
.flags = IRQCHIP_SKIP_SET_WAKE |
@ -245,7 +247,7 @@ static bool imsic_init_dev_msi_info(struct device *dev,
if (WARN_ON_ONCE(domain != real_parent))
return false;
#ifdef CONFIG_SMP
info->chip->irq_set_affinity = imsic_irq_set_affinity;
info->chip->irq_set_affinity = irq_chip_set_affinity_parent;
#endif
break;
default: