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ocxl: Access interrupt trigger page from xive directly

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We can access the trigger page through standard APIs so let's use it
and avoid saving it when allocating the interrupt. It will also allow
to simplify allocation in a later patch.

Signed-off-by: Frederic Barrat <fbarrat@linux.ibm.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Greg Kurz <groug@kaod.org>
Acked-by: Andrew Donnellan <ajd@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200403153838.29224-3-fbarrat@linux.ibm.com
This commit is contained in:
Frederic Barrat 2020-04-03 17:38:36 +02:00 committed by Michael Ellerman
parent 1e89da5ef9
commit ad857d47df
1 changed files with 6 additions and 2 deletions
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8
drivers/misc/ocxl/afu_irq.c
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@ -2,6 +2,7 @@
// Copyright 2017 IBM Corp.
#include <linux/interrupt.h>
#include <asm/pnv-ocxl.h>
#include <asm/xive.h>
#include "ocxl_internal.h"
#include "trace.h"
@ -196,13 +197,16 @@ void ocxl_afu_irq_free_all(struct ocxl_context *ctx)
u64 ocxl_afu_irq_get_addr(struct ocxl_context *ctx, int irq_id)
{
struct xive_irq_data *xd;
struct afu_irq *irq;
u64 addr = 0;
mutex_lock(&ctx->irq_lock);
irq = idr_find(&ctx->irq_idr, irq_id);
if (irq)
addr = irq->trigger_page;
if (irq) {
xd = irq_get_handler_data(irq->virq);
addr = xd ? xd->trig_page : 0;
}
mutex_unlock(&ctx->irq_lock);
return addr;
}