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authorThomas Bogendoerfer <tbogendoerfer@suse.de>2019-02-19 16:57:20 +0100
committerPaul Burton <paul.burton@mips.com>2019-02-19 12:46:03 -0800
commit69a07a41d908f9df48393bbab179daded8cfab66 (patch)
tree6764897f28cee05ecd539010ce61c4138b3bfdc5 /arch/mips/sgi-ip27/ip27-irqno.c
parentMIPS: SGI-IP27: do boot CPU init later (diff)
downloadlinux-dev-69a07a41d908f9df48393bbab179daded8cfab66.tar.xz
linux-dev-69a07a41d908f9df48393bbab179daded8cfab66.zip
MIPS: SGI-IP27: rework HUB interrupts
This commit rearranges the HUB interrupt code by using MIPS_IRQ_CPU interrupt handling code and modern Linux IRQ framework features to get rid of global arrays. It also adds support for irq affinity setting. Signed-off-by: Thomas Bogendoerfer <tbogendoerfer@suse.de> Signed-off-by: Paul Burton <paul.burton@mips.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Hogan <jhogan@kernel.org> Cc: linux-mips@vger.kernel.org Cc: linux-kernel@vger.kernel.org
Diffstat (limited to '')
-rw-r--r--arch/mips/sgi-ip27/ip27-irqno.c48
1 files changed, 0 insertions, 48 deletions
diff --git a/arch/mips/sgi-ip27/ip27-irqno.c b/arch/mips/sgi-ip27/ip27-irqno.c
deleted file mode 100644
index 957ab58e1c00..000000000000
--- a/arch/mips/sgi-ip27/ip27-irqno.c
+++ /dev/null
@@ -1,48 +0,0 @@
-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- */
-#include <linux/init.h>
-#include <linux/irq.h>
-#include <linux/types.h>
-
-#include <asm/barrier.h>
-
-static DECLARE_BITMAP(irq_map, NR_IRQS);
-
-int allocate_irqno(void)
-{
- int irq;
-
-again:
- irq = find_first_zero_bit(irq_map, NR_IRQS);
-
- if (irq >= NR_IRQS)
- return -ENOSPC;
-
- if (test_and_set_bit(irq, irq_map))
- goto again;
-
- return irq;
-}
-
-/*
- * Allocate the 16 legacy interrupts for i8259 devices. This happens early
- * in the kernel initialization so treating allocation failure as BUG() is
- * ok.
- */
-void __init alloc_legacy_irqno(void)
-{
- int i;
-
- for (i = 0; i <= 16; i++)
- BUG_ON(test_and_set_bit(i, irq_map));
-}
-
-void free_irqno(unsigned int irq)
-{
- smp_mb__before_atomic();
- clear_bit(irq, irq_map);
- smp_mb__after_atomic();
-}