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[IA64] altix: Abstract irq_affinity at the sn pci provider

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Altix patch to abstract irq_affinity down to the pci provider level since
different SGI hardware implements this in different ways.

Signed-off-by: Mark Maule <maule@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
This commit is contained in:
Mark Maule 2005-08-25 11:45:00 -07:00 committed by Tony Luck
parent 5b9021bc58
commit 8409668b56
5 changed files with 49 additions and 6 deletions
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6
arch/ia64/sn/kernel/irq.c
View file

@ -127,6 +127,7 @@ static void sn_set_affinity_irq(unsigned int irq, cpumask_t mask)
int local_widget, status;
nasid_t local_nasid;
struct sn_irq_info *new_irq_info;
struct sn_pcibus_provider *pci_provider;
new_irq_info = kmalloc(sizeof(struct sn_irq_info), GFP_ATOMIC);
if (new_irq_info == NULL)
@ -166,8 +167,9 @@ static void sn_set_affinity_irq(unsigned int irq, cpumask_t mask)
new_irq_info->irq_cpuid = cpuid;
register_intr_pda(new_irq_info);
if (IS_PCI_BRIDGE_ASIC(new_irq_info->irq_bridge_type))
pcibr_change_devices_irq(new_irq_info);
pci_provider = sn_pci_provider[new_irq_info->irq_bridge_type];
if (pci_provider && pci_provider->target_interrupt)
(pci_provider->target_interrupt)(new_irq_info);
spin_lock(&sn_irq_info_lock);
list_replace_rcu(&sn_irq_info->list, &new_irq_info->list);

5
arch/ia64/sn/pci/pcibr/pcibr_provider.c
View file

@ -198,7 +198,7 @@ void pcibr_force_interrupt(struct sn_irq_info *sn_irq_info)
}
}
void pcibr_change_devices_irq(struct sn_irq_info *sn_irq_info)
void pcibr_target_interrupt(struct sn_irq_info *sn_irq_info)
{
struct pcidev_info *pcidev_info;
struct pcibus_info *pcibus_info;
@ -233,7 +233,8 @@ struct sn_pcibus_provider pcibr_provider = {
.dma_map_consistent = pcibr_dma_map_consistent,
.dma_unmap = pcibr_dma_unmap,
.bus_fixup = pcibr_bus_fixup,
.force_interrupt = pcibr_force_interrupt
.force_interrupt = pcibr_force_interrupt,
.target_interrupt = pcibr_target_interrupt
};
int

3
arch/ia64/sn/pci/tioca_provider.c
View file

@ -657,7 +657,8 @@ static struct sn_pcibus_provider tioca_pci_interfaces = {
.dma_map_consistent = tioca_dma_map,
.dma_unmap = tioca_dma_unmap,
.bus_fixup = tioca_bus_fixup,
.force_interrupt = NULL
.force_interrupt = NULL,
.target_interrupt = NULL
};
/**

40
arch/ia64/sn/pci/tioce_provider.c
View file

@ -668,6 +668,43 @@ tioce_force_interrupt(struct sn_irq_info *sn_irq_info)
ce_mmr->ce_adm_force_int = force_int_val;
}
/**
* tioce_target_interrupt - implement set_irq_affinity for tioce resident
* functions. Note: only applies to line interrupts, not MSI's.
*
* @sn_irq_info: SN IRQ context
*
* Given an sn_irq_info, set the associated CE device's interrupt destination
* register. Since the interrupt destination registers are on a per-ce-slot
* basis, this will retarget line interrupts for all functions downstream of
* the slot.
*/
static void
tioce_target_interrupt(struct sn_irq_info *sn_irq_info)
{
struct pcidev_info *pcidev_info;
struct tioce_common *ce_common;
struct tioce *ce_mmr;
int bit;
pcidev_info = (struct pcidev_info *)sn_irq_info->irq_pciioinfo;
if (!pcidev_info)
return;
ce_common = (struct tioce_common *)pcidev_info->pdi_pcibus_info;
ce_mmr = (struct tioce *)ce_common->ce_pcibus.bs_base;
bit = sn_irq_info->irq_int_bit;
ce_mmr->ce_adm_int_mask |= (1UL << bit);
ce_mmr->ce_adm_int_dest[bit] =
((uint64_t)sn_irq_info->irq_irq << INTR_VECTOR_SHFT) |
sn_irq_info->irq_xtalkaddr;
ce_mmr->ce_adm_int_mask &= ~(1UL << bit);
tioce_force_interrupt(sn_irq_info);
}
/**
* tioce_bus_fixup - perform final PCI fixup for a TIO CE bus
* @prom_bussoft: Common prom/kernel struct representing the bus
@ -719,7 +756,8 @@ static struct sn_pcibus_provider tioce_pci_interfaces = {
.dma_map_consistent = tioce_dma_consistent,
.dma_unmap = tioce_dma_unmap,
.bus_fixup = tioce_bus_fixup,
.force_interrupt = tioce_force_interrupt
.force_interrupt = tioce_force_interrupt,
.target_interrupt = tioce_target_interrupt
};
/**

1
include/asm-ia64/sn/pcibus_provider_defs.h
View file

@ -50,6 +50,7 @@ struct sn_pcibus_provider {
void (*dma_unmap)(struct pci_dev *, dma_addr_t, int);
void * (*bus_fixup)(struct pcibus_bussoft *, struct pci_controller *);
void (*force_interrupt)(struct sn_irq_info *);
void (*target_interrupt)(struct sn_irq_info *);
};
extern struct sn_pcibus_provider *sn_pci_provider[];