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x86/irq: Prepare IOAPIC interfaces to support hierarchical irqdomains

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Introduce helper functions to manipulate struct irq_alloc_info for
IOAPIC.  Also add an extra parameter to IOAPIC interfaces to prepare
for hierarchical irqdomain. Function mp_set_gsi_attr() will be removed
once we have switched to hierarchical irqdomains.

Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Tested-by: Joerg Roedel <jroedel@suse.de>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Sander Eikelenboom <linux@eikelenboom.it>
Cc: David Vrabel <david.vrabel@citrix.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Joerg Roedel <joro@8bytes.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Rafael J. Wysocki <rjw@rjwysocki.net>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dimitri Sivanich <sivanich@sgi.com>
Cc: Len Brown <len.brown@intel.com>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Jan Beulich <JBeulich@suse.com>
Cc: Grant Likely <grant.likely@linaro.org>
Cc: David Cohen <david.a.cohen@linux.intel.com>
Link: http://lkml.kernel.org/r/1428905519-23704-33-git-send-email-jiang.liu@linux.intel.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Jiang Liu
2015-04-13 14:11:54 +08:00
committed by Thomas Gleixner
parent 4e69d7eab4
commit c4d05a2c35
6 changed files with 54 additions and 22 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
arch/x86/platform/intel-mid/device_libs/platform_wdt.c
View File

@@ -27,6 +27,7 @@ static struct platform_device wdt_dev = {
static int tangier_probe(struct platform_device *pdev)
{
int gsi;
struct irq_alloc_info info;
struct intel_mid_wdt_pdata *pdata = pdev->dev.platform_data;
if (!pdata)
@@ -34,8 +35,9 @@ static int tangier_probe(struct platform_device *pdev)
/* IOAPIC builds identity mapping between GSI and IRQ on MID */
gsi = pdata->irq;
ioapic_set_alloc_attr(&info, cpu_to_node(0), 1, 0);
if (mp_set_gsi_attr(gsi, 1, 0, cpu_to_node(0)) ||
mp_map_gsi_to_irq(gsi, IOAPIC_MAP_ALLOC) <= 0) {
mp_map_gsi_to_irq(gsi, IOAPIC_MAP_ALLOC, &info) <= 0) {
dev_warn(&pdev->dev, "cannot find interrupt %d in ioapic\n",
gsi);
return -EINVAL;

9
arch/x86/platform/intel-mid/sfi.c
View File

@@ -104,7 +104,7 @@ int __init sfi_parse_mtmr(struct sfi_table_header *table)
mp_irq.dstapic = MP_APIC_ALL;
mp_irq.dstirq = pentry->irq;
mp_save_irq(&mp_irq);
mp_map_gsi_to_irq(pentry->irq, IOAPIC_MAP_ALLOC);
mp_map_gsi_to_irq(pentry->irq, IOAPIC_MAP_ALLOC, NULL);
}
return 0;
@@ -175,7 +175,7 @@ int __init sfi_parse_mrtc(struct sfi_table_header *table)
mp_irq.dstapic = MP_APIC_ALL;
mp_irq.dstirq = pentry->irq;
mp_save_irq(&mp_irq);
mp_map_gsi_to_irq(pentry->irq, IOAPIC_MAP_ALLOC);
mp_map_gsi_to_irq(pentry->irq, IOAPIC_MAP_ALLOC, NULL);
}
return 0;
}
@@ -434,6 +434,7 @@ static int __init sfi_parse_devs(struct sfi_table_header *table)
struct devs_id *dev = NULL;
int num, i, ret;
int polarity;
struct irq_alloc_info info;
sb = (struct sfi_table_simple *)table;
num = SFI_GET_NUM_ENTRIES(sb, struct sfi_device_table_entry);
@@ -467,9 +468,11 @@ static int __init sfi_parse_devs(struct sfi_table_header *table)
polarity = 1;
}
ioapic_set_alloc_attr(&info, NUMA_NO_NODE, 1, polarity);
ret = mp_set_gsi_attr(irq, 1, polarity, NUMA_NO_NODE);
if (ret == 0)
ret = mp_map_gsi_to_irq(irq, IOAPIC_MAP_ALLOC);
ret = mp_map_gsi_to_irq(irq, IOAPIC_MAP_ALLOC,
&info);
WARN_ON(ret < 0);
}