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94f42cc1ed
commit bfc9136824 upstream.
Eiger machine vector definition has nr_irqs 128, and working 2.6.26
boot shows SCSI getting IRQ-s 64 and 65. Current kernel boot fails
because Symbios SCSI fails to request IRQ-s and does not find the disks.
It has been broken at least since 3.18 - the earliest I could test with
my gcc-5.
The headers have moved around and possibly another order of defines has
worked in the past - but since 128 seems to be correct and used, fix
arch/alpha/include/asm/irq.h to have NR_IRQS=128 for Eiger.
This fixes 4.19-rc7 boot on my Force Flexor A264 (Eiger subarch).
Cc: stable@vger.kernel.org # v3.18+
Signed-off-by: Meelis Roos <mroos@linux.ee>
Signed-off-by: Matt Turner <mattst88@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
93 lines
2.3 KiB
C
93 lines
2.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ALPHA_IRQ_H
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#define _ALPHA_IRQ_H
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/*
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* linux/include/alpha/irq.h
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*
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* (C) 1994 Linus Torvalds
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*/
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#include <linux/linkage.h>
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#if defined(CONFIG_ALPHA_GENERIC)
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/* Here NR_IRQS is not exact, but rather an upper bound. This is used
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many places throughout the kernel to size static arrays. That's ok,
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we'll use alpha_mv.nr_irqs when we want the real thing. */
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/* When LEGACY_START_ADDRESS is selected, we leave out:
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TITAN
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WILDFIRE
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MARVEL
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This helps keep the kernel object size reasonable for the majority
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of machines.
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*/
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# if defined(CONFIG_ALPHA_LEGACY_START_ADDRESS)
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# define NR_IRQS (128) /* max is RAWHIDE/TAKARA */
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# else
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# define NR_IRQS (32768 + 16) /* marvel - 32 pids */
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# endif
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#elif defined(CONFIG_ALPHA_CABRIOLET) || \
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defined(CONFIG_ALPHA_EB66P) || \
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defined(CONFIG_ALPHA_EB164) || \
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defined(CONFIG_ALPHA_PC164) || \
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defined(CONFIG_ALPHA_LX164)
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# define NR_IRQS 35
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#elif defined(CONFIG_ALPHA_EB66) || \
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defined(CONFIG_ALPHA_EB64P) || \
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defined(CONFIG_ALPHA_MIKASA)
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# define NR_IRQS 32
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#elif defined(CONFIG_ALPHA_ALCOR) || \
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defined(CONFIG_ALPHA_MIATA) || \
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defined(CONFIG_ALPHA_RUFFIAN) || \
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defined(CONFIG_ALPHA_RX164) || \
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defined(CONFIG_ALPHA_NORITAKE)
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# define NR_IRQS 48
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#elif defined(CONFIG_ALPHA_SABLE) || \
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defined(CONFIG_ALPHA_SX164)
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# define NR_IRQS 40
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#elif defined(CONFIG_ALPHA_DP264) || \
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defined(CONFIG_ALPHA_LYNX) || \
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defined(CONFIG_ALPHA_SHARK)
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# define NR_IRQS 64
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#elif defined(CONFIG_ALPHA_TITAN)
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#define NR_IRQS 80
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#elif defined(CONFIG_ALPHA_RAWHIDE) || \
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defined(CONFIG_ALPHA_TAKARA) || \
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defined(CONFIG_ALPHA_EIGER)
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# define NR_IRQS 128
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#elif defined(CONFIG_ALPHA_WILDFIRE)
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# define NR_IRQS 2048 /* enuff for 8 QBBs */
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#elif defined(CONFIG_ALPHA_MARVEL)
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# define NR_IRQS (32768 + 16) /* marvel - 32 pids*/
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#else /* everyone else */
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# define NR_IRQS 16
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#endif
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static __inline__ int irq_canonicalize(int irq)
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{
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/*
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* XXX is this true for all Alpha's? The old serial driver
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* did it this way for years without any complaints, so....
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*/
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return ((irq == 2) ? 9 : irq);
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}
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struct pt_regs;
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extern void (*perf_irq)(unsigned long, struct pt_regs *);
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#endif /* _ALPHA_IRQ_H */
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