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irqchip/armada-370-xp: Put MSI doorbell limits into the mpic structure

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Put the MSI doorbell limits msi_doorbell_start, msi_doorbell_size and
msi_doorbell_mask into the driver private structure and get rid of the
corresponding functions.

Signed-off-by: Marek Behún <kabel@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Marek Behún 2024-08-07 18:40:58 +02:00 committed by Thomas Gleixner
parent 68fe2c5985
commit ee5d09cf14
1 changed files with 22 additions and 22 deletions
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44
drivers/irqchip/irq-armada-370-xp.c
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@ -161,6 +161,10 @@
* @msi_used: bitmap of used MSI numbers
* @msi_lock: mutex serializing access to @msi_used
* @msi_doorbell_addr: physical address of MSI doorbell register
* @msi_doorbell_mask: mask of available doorbell bits for MSIs (either PCI_MSI_DOORBELL_MASK or
* PCI_MSI_FULL_DOORBELL_MASK)
* @msi_doorbell_start: first set bit in @msi_doorbell_mask
* @msi_doorbell_size: number of set bits in @msi_doorbell_mask
* @doorbell_mask: doorbell mask of MSIs and IPIs, stored on suspend, restored on resume
*/
struct mpic {
@ -177,6 +181,8 @@ struct mpic {
DECLARE_BITMAP(msi_used, PCI_MSI_FULL_DOORBELL_NR);
struct mutex msi_lock;
phys_addr_t msi_doorbell_addr;
u32 msi_doorbell_mask;
unsigned int msi_doorbell_start, msi_doorbell_size;
#endif
u32 doorbell_mask;
};
@ -195,21 +201,6 @@ static inline bool mpic_is_ipi_available(void)
return mpic->parent_irq <= 0;
}
static inline u32 msi_doorbell_mask(void)
{
return mpic_is_ipi_available() ? PCI_MSI_DOORBELL_MASK : PCI_MSI_FULL_DOORBELL_MASK;
}
static inline unsigned int msi_doorbell_start(void)
{
return mpic_is_ipi_available() ? PCI_MSI_DOORBELL_START : PCI_MSI_FULL_DOORBELL_START;
}
static inline unsigned int msi_doorbell_size(void)
{
return mpic_is_ipi_available() ? PCI_MSI_DOORBELL_NR : PCI_MSI_FULL_DOORBELL_NR;
}
static inline bool mpic_is_percpu_irq(irq_hw_number_t hwirq)
{
return hwirq <= MPIC_MAX_PER_CPU_IRQS;
@ -260,7 +251,7 @@ static void mpic_compose_msi_msg(struct irq_data *d, struct msi_msg *msg)
msg->address_lo = lower_32_bits(mpic->msi_doorbell_addr);
msg->address_hi = upper_32_bits(mpic->msi_doorbell_addr);
msg->data = BIT(cpu + 8) | (d->hwirq + msi_doorbell_start());
msg->data = BIT(cpu + 8) | (d->hwirq + mpic->msi_doorbell_start);
}
static int mpic_msi_set_affinity(struct irq_data *d, const struct cpumask *mask, bool force)
@ -292,7 +283,7 @@ static int mpic_msi_alloc(struct irq_domain *domain, unsigned int virq, unsigned
int hwirq;
mutex_lock(&mpic->msi_lock);
hwirq = bitmap_find_free_region(mpic->msi_used, msi_doorbell_size(),
hwirq = bitmap_find_free_region(mpic->msi_used, mpic->msi_doorbell_size,
order_base_2(nr_irqs));
mutex_unlock(&mpic->msi_lock);
@ -329,7 +320,7 @@ static void mpic_msi_reenable_percpu(void)
/* Enable MSI doorbell mask and combined cpu local interrupt */
reg = readl(mpic->per_cpu + MPIC_IN_DRBEL_MASK);
reg |= msi_doorbell_mask();
reg |= mpic->msi_doorbell_mask;
writel(reg, mpic->per_cpu + MPIC_IN_DRBEL_MASK);
/* Unmask local doorbell interrupt */
@ -342,7 +333,17 @@ static int __init mpic_msi_init(struct device_node *node, phys_addr_t main_int_p
mutex_init(&mpic->msi_lock);
mpic->msi_inner_domain = irq_domain_add_linear(NULL, msi_doorbell_size(),
if (mpic_is_ipi_available()) {
mpic->msi_doorbell_start = PCI_MSI_DOORBELL_START;
mpic->msi_doorbell_size = PCI_MSI_DOORBELL_NR;
mpic->msi_doorbell_mask = PCI_MSI_DOORBELL_MASK;
} else {
mpic->msi_doorbell_start = PCI_MSI_FULL_DOORBELL_START;
mpic->msi_doorbell_size = PCI_MSI_FULL_DOORBELL_NR;
mpic->msi_doorbell_mask = PCI_MSI_FULL_DOORBELL_MASK;
}
mpic->msi_inner_domain = irq_domain_add_linear(NULL, mpic->msi_doorbell_size,
&mpic_msi_domain_ops, NULL);
if (!mpic->msi_inner_domain)
return -ENOMEM;
@ -620,12 +621,11 @@ static void mpic_handle_msi_irq(void)
unsigned int i;
cause = readl_relaxed(mpic->per_cpu + MPIC_IN_DRBEL_CAUSE);
cause &= msi_doorbell_mask();
cause &= mpic->msi_doorbell_mask;
writel(~cause, mpic->per_cpu + MPIC_IN_DRBEL_CAUSE);
for_each_set_bit(i, &cause, BITS_PER_LONG)
generic_handle_domain_irq(mpic->msi_inner_domain,
i - msi_doorbell_start());
generic_handle_domain_irq(mpic->msi_inner_domain, i - mpic->msi_doorbell_start);
}
#else
static void mpic_handle_msi_irq(void) {}