From: Bartosz Golaszewski <brgl@bgdev.pl>
To: Sekhar Nori <nsekhar@ti.com>, Kevin Hilman <khilman@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
Jason Cooper <jason@lakedaemon.net>,
Marc Zyngier <marc.zyngier@arm.com>
Cc: linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org,
Bartosz Golaszewski <bgolaszewski@baylibre.com>
Subject: [PATCH 02/35] ARM: davinci: select GENERIC_IRQ_MULTI_HANDLER
Date: Thu, 31 Jan 2019 14:38:55 +0100 [thread overview]
Message-ID: <20190131133928.17985-3-brgl@bgdev.pl> (raw)
In-Reply-To: <20190131133928.17985-1-brgl@bgdev.pl>
From: Bartosz Golaszewski <bgolaszewski@baylibre.com>
In order to support SPARSE_IRQ we first need to make davinci use the
generic irq handler for ARM. Translate the legacy assembly to C and
put the irq handlers into their respective drivers (aintc and cp-intc).
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
---
arch/arm/Kconfig | 1 +
arch/arm/mach-davinci/cp_intc.c | 13 +++++++
.../mach-davinci/include/mach/entry-macro.S | 39 -------------------
arch/arm/mach-davinci/irq.c | 21 ++++++++++
4 files changed, 35 insertions(+), 39 deletions(-)
delete mode 100644 arch/arm/mach-davinci/include/mach/entry-macro.S
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 664e918e2624..f7770fdcad68 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -589,6 +589,7 @@ config ARCH_DAVINCI
select GENERIC_ALLOCATOR
select GENERIC_CLOCKEVENTS
select GENERIC_IRQ_CHIP
+ select GENERIC_IRQ_MULTI_HANDLER
select GPIOLIB
select HAVE_IDE
select PM_GENERIC_DOMAINS if PM
diff --git a/arch/arm/mach-davinci/cp_intc.c b/arch/arm/mach-davinci/cp_intc.c
index 67805ca74ff8..b9aec3c48a6a 100644
--- a/arch/arm/mach-davinci/cp_intc.c
+++ b/arch/arm/mach-davinci/cp_intc.c
@@ -19,6 +19,7 @@
#include <linux/of_address.h>
#include <linux/of_irq.h>
+#include <asm/exception.h>
#include <mach/common.h>
#include "cp_intc.h"
@@ -97,6 +98,16 @@ static struct irq_chip cp_intc_irq_chip = {
static struct irq_domain *cp_intc_domain;
+static asmlinkage void __exception_irq_entry
+cp_intc_handle_irq(struct pt_regs *regs)
+{
+ int irqnr = cp_intc_read(CP_INTC_PRIO_IDX);
+
+ irqnr &= 0xff;
+
+ handle_domain_irq(cp_intc_domain, irqnr, regs);
+}
+
static int cp_intc_host_map(struct irq_domain *h, unsigned int virq,
irq_hw_number_t hw)
{
@@ -196,6 +207,8 @@ int __init cp_intc_of_init(struct device_node *node, struct device_node *parent)
return -EINVAL;
}
+ set_handle_irq(cp_intc_handle_irq);
+
/* Enable global interrupt */
cp_intc_write(1, CP_INTC_GLOBAL_ENABLE);
diff --git a/arch/arm/mach-davinci/include/mach/entry-macro.S b/arch/arm/mach-davinci/include/mach/entry-macro.S
deleted file mode 100644
index cf5f573eb5fd..000000000000
--- a/arch/arm/mach-davinci/include/mach/entry-macro.S
+++ /dev/null
@@ -1,39 +0,0 @@
-/*
- * Low-level IRQ helper macros for TI DaVinci-based platforms
- *
- * Author: Kevin Hilman, MontaVista Software, Inc. <source@mvista.com>
- *
- * 2007 (c) MontaVista Software, Inc. This file is licensed under
- * the terms of the GNU General Public License version 2. This program
- * is licensed "as is" without any warranty of any kind, whether express
- * or implied.
- */
-#include <mach/irqs.h>
-
- .macro get_irqnr_preamble, base, tmp
- ldr \base, =davinci_intc_base
- ldr \base, [\base]
- .endm
-
- .macro get_irqnr_and_base, irqnr, irqstat, base, tmp
-#if defined(CONFIG_AINTC) && defined(CONFIG_CP_INTC)
- ldr \tmp, =davinci_intc_type
- ldr \tmp, [\tmp]
- cmp \tmp, #DAVINCI_INTC_TYPE_CP_INTC
- beq 1001f
-#endif
-#if defined(CONFIG_AINTC)
- ldr \tmp, [\base, #0x14]
- movs \tmp, \tmp, lsr #2
- sub \irqnr, \tmp, #1
- b 1002f
-#endif
-#if defined(CONFIG_CP_INTC)
-1001: ldr \irqnr, [\base, #0x80] /* get irq number */
- mov \tmp, \irqnr, lsr #31
- and \irqnr, \irqnr, #0xff /* irq is in bits 0-9 */
- and \tmp, \tmp, #0x1
- cmp \tmp, #0x1
-#endif
-1002:
- .endm
diff --git a/arch/arm/mach-davinci/irq.c b/arch/arm/mach-davinci/irq.c
index 952dc126c390..3bbbef78d9ac 100644
--- a/arch/arm/mach-davinci/irq.c
+++ b/arch/arm/mach-davinci/irq.c
@@ -28,11 +28,13 @@
#include <mach/cputype.h>
#include <mach/common.h>
#include <asm/mach/irq.h>
+#include <asm/exception.h>
#define FIQ_REG0_OFFSET 0x0000
#define FIQ_REG1_OFFSET 0x0004
#define IRQ_REG0_OFFSET 0x0008
#define IRQ_REG1_OFFSET 0x000C
+#define IRQ_IRQENTRY_OFFSET 0x0014
#define IRQ_ENT_REG0_OFFSET 0x0018
#define IRQ_ENT_REG1_OFFSET 0x001C
#define IRQ_INCTL_REG_OFFSET 0x0020
@@ -45,6 +47,11 @@ static inline void davinci_irq_writel(unsigned long value, int offset)
__raw_writel(value, davinci_intc_base + offset);
}
+static inline unsigned long davinci_irq_readl(int offset)
+{
+ return __raw_readl(davinci_intc_base + offset);
+}
+
static __init void
davinci_alloc_gc(void __iomem *base, unsigned int irq_start, unsigned int num)
{
@@ -69,6 +76,19 @@ davinci_alloc_gc(void __iomem *base, unsigned int irq_start, unsigned int num)
IRQ_NOREQUEST | IRQ_NOPROBE, 0);
}
+static asmlinkage void __exception_irq_entry
+davinci_handle_irq(struct pt_regs *regs)
+{
+ int irqnr = davinci_irq_readl(IRQ_IRQENTRY_OFFSET);
+ struct pt_regs *old_regs = set_irq_regs(regs);
+
+ irqnr >>= 2;
+ irqnr -= 1;
+
+ generic_handle_irq(irqnr);
+ set_irq_regs(old_regs);
+}
+
/* ARM Interrupt Controller Initialization */
void __init davinci_irq_init(void)
{
@@ -114,4 +134,5 @@ void __init davinci_irq_init(void)
davinci_alloc_gc(davinci_intc_base + j, i, 32);
irq_set_handler(IRQ_TINT1_TINT34, handle_level_irq);
+ set_handle_irq(davinci_handle_irq);
}
--
2.20.1
next prev parent reply other threads:[~2019-01-31 13:39 UTC|newest]
Thread overview: 97+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-31 13:38 [PATCH 00/35] ARM: davinci: modernize the irq support Bartosz Golaszewski
2019-01-31 13:38 ` [PATCH 01/35] ARM: davinci: remove intc_host_map from davinci_soc_info struct Bartosz Golaszewski
2019-02-04 21:50 ` David Lechner
2019-02-06 8:32 ` Sekhar Nori
2019-01-31 13:38 ` Bartosz Golaszewski [this message]
2019-02-04 22:02 ` [PATCH 02/35] ARM: davinci: select GENERIC_IRQ_MULTI_HANDLER David Lechner
2019-02-06 12:39 ` Sekhar Nori
2019-02-07 15:49 ` Bartosz Golaszewski
2019-02-08 8:59 ` Sekhar Nori
2019-01-31 13:38 ` [PATCH 03/35] ARM: davinci: remove davinci_intc_type Bartosz Golaszewski
2019-02-04 22:04 ` David Lechner
2019-01-31 13:38 ` [PATCH 04/35] ARM: davinci: pull davinci_intc_base into the respective intc drivers Bartosz Golaszewski
2019-02-04 22:06 ` David Lechner
2019-01-31 13:38 ` [PATCH 05/35] ARM: davinci: drop irq defines from default_priorites Bartosz Golaszewski
2019-02-04 22:21 ` David Lechner
2019-02-06 13:03 ` Sekhar Nori
2019-02-06 13:32 ` Bartosz Golaszewski
2019-02-06 14:50 ` Sekhar Nori
2019-02-05 0:20 ` David Lechner
2019-02-05 16:16 ` Bartosz Golaszewski
2019-01-31 13:38 ` [PATCH 06/35] ARM: davinci: wrap interrupt definitions with a macro for SPARSE_IRQ Bartosz Golaszewski
2019-02-04 22:32 ` David Lechner
2019-02-05 16:17 ` Bartosz Golaszewski
2019-01-31 13:39 ` [PATCH 07/35] ARM: davinci: aintc: use irq domain Bartosz Golaszewski
2019-02-04 22:42 ` David Lechner
2019-02-05 16:29 ` Bartosz Golaszewski
2019-02-06 15:08 ` Sekhar Nori
2019-01-31 13:39 ` [PATCH 08/35] ARM: davinci: select SPARSE_IRQ Bartosz Golaszewski
2019-02-04 22:46 ` David Lechner
2019-01-31 13:39 ` [PATCH 09/35] ARM: davinci: aintc: drop GPL license boilerplate Bartosz Golaszewski
2019-01-31 13:39 ` [PATCH 10/35] ARM: davinci: aintc: wrap davinci_irq_init() with a helper Bartosz Golaszewski
2019-02-04 22:51 ` David Lechner
2019-01-31 13:39 ` [PATCH 11/35] ARM: davinci: aintc: use a common prefix for symbols in the driver Bartosz Golaszewski
2019-02-04 22:54 ` David Lechner
2019-01-31 13:39 ` [PATCH 12/35] ARM: davinci: aintc: drop the 00 prefix from register offsets Bartosz Golaszewski
2019-02-04 22:56 ` David Lechner
2019-01-31 13:39 ` [PATCH 13/35] ARM: davinci: aintc: add a new config structure Bartosz Golaszewski
2019-02-04 23:02 ` David Lechner
2019-02-07 13:33 ` Sekhar Nori
2019-01-31 13:39 ` [PATCH 14/35] ARM: davinci: aintc: use the new irqchip config structure in dm* SoCs Bartosz Golaszewski
2019-02-04 23:09 ` David Lechner
2019-01-31 13:39 ` [PATCH 15/35] ARM: davinci: aintc: use the new config structure Bartosz Golaszewski
2019-02-04 23:29 ` David Lechner
2019-01-31 13:39 ` [PATCH 16/35] ARM: davinci: aintc: move timer-specific irq_set_handler() out of irq.c Bartosz Golaszewski
2019-02-04 23:36 ` David Lechner
2019-02-07 12:21 ` Sekhar Nori
2019-01-31 13:39 ` [PATCH 17/35] ARM: davinci: aintc: remove unnecessary includes Bartosz Golaszewski
2019-02-04 23:37 ` David Lechner
2019-01-31 13:39 ` [PATCH 18/35] irqchip: davinci-aintc: move the driver to drivers/irqchip Bartosz Golaszewski
2019-02-04 23:43 ` David Lechner
2019-02-08 16:03 ` Bartosz Golaszewski
2019-01-31 13:39 ` [PATCH 19/35] ARM: davinci: cp-intc: remove cp_intc.h Bartosz Golaszewski
2019-02-04 23:48 ` David Lechner
2019-01-31 13:39 ` [PATCH 20/35] ARM: davinci: cp-intc: add a wrapper around cp_intc_init() Bartosz Golaszewski
2019-02-04 23:50 ` David Lechner
2019-01-31 13:39 ` [PATCH 21/35] ARM: davinci: cp-intc: add a new config structure Bartosz Golaszewski
2019-02-04 23:54 ` David Lechner
2019-01-31 13:39 ` [PATCH 22/35] ARM: davinci: cp-intc: add the new config structures for da8xx SoCs Bartosz Golaszewski
2019-02-04 23:58 ` David Lechner
2019-02-07 13:35 ` Sekhar Nori
2019-01-31 13:39 ` [PATCH 23/35] ARM: davinci: cp-intc: use a common prefix for all symbols Bartosz Golaszewski
2019-02-05 0:01 ` David Lechner
2019-02-07 13:43 ` Sekhar Nori
2019-01-31 13:39 ` [PATCH 24/35] ARM: davinci: cp-intc: convert all hex numbers to lowercase Bartosz Golaszewski
2019-02-05 0:04 ` David Lechner
2019-01-31 13:39 ` [PATCH 25/35] ARM: davinci: cp-intc: use the new-style config structure Bartosz Golaszewski
2019-02-05 0:29 ` David Lechner
2019-02-08 16:27 ` Bartosz Golaszewski
2019-02-07 13:59 ` Sekhar Nori
2019-01-31 13:39 ` [PATCH 26/35] ARM: davinci: cp-intc: improve coding style Bartosz Golaszewski
2019-02-05 0:35 ` David Lechner
2019-01-31 13:39 ` [PATCH 27/35] ARM: davinci: cp-intc: unify error handling Bartosz Golaszewski
2019-02-05 0:37 ` David Lechner
2019-01-31 13:39 ` [PATCH 28/35] ARM: davinci: cp-intc: remove unneeded include Bartosz Golaszewski
2019-02-05 0:39 ` David Lechner
2019-01-31 13:39 ` [PATCH 29/35] ARM: davinci: cp-intc: drop GPL license boilerplate Bartosz Golaszewski
2019-02-05 0:41 ` David Lechner
2019-01-31 13:39 ` [PATCH 30/35] ARM: davinci: cp-intc: remove redundant comments Bartosz Golaszewski
2019-02-05 0:42 ` David Lechner
2019-01-31 13:39 ` [PATCH 31/35] irqchip: davinci-cp-intc: move the driver to drivers/irqchip Bartosz Golaszewski
2019-02-05 0:44 ` David Lechner
2019-01-31 13:39 ` [PATCH 32/35] ARM: davinci: remove intc related fields from davinci_soc_info Bartosz Golaszewski
2019-02-05 0:48 ` David Lechner
2019-02-07 14:04 ` Sekhar Nori
2019-02-08 16:41 ` Bartosz Golaszewski
2019-01-31 13:39 ` [PATCH 33/35] ARM: davinci: prepare to remove mach/irqs.h Bartosz Golaszewski
2019-02-07 14:07 ` Sekhar Nori
2019-01-31 13:39 ` [PATCH 34/35] ARM: davinci: stop using defines from mach/irqs.h Bartosz Golaszewski
2019-02-05 1:05 ` David Lechner
2019-01-31 13:39 ` [PATCH 35/35] ARM: davinci: remove mach/irqs.h Bartosz Golaszewski
2019-02-05 1:06 ` David Lechner
2019-02-04 21:49 ` [PATCH 00/35] ARM: davinci: modernize the irq support David Lechner
2019-02-05 16:11 ` Bartosz Golaszewski
2019-02-08 11:43 ` Sekhar Nori
2019-02-08 12:27 ` Bartosz Golaszewski
2019-02-08 12:29 ` Sekhar Nori
2019-02-07 15:24 ` Sekhar Nori
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20190131133928.17985-3-brgl@bgdev.pl \
--to=brgl@bgdev.pl \
--cc=bgolaszewski@baylibre.com \
--cc=jason@lakedaemon.net \
--cc=khilman@kernel.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=marc.zyngier@arm.com \
--cc=nsekhar@ti.com \
--cc=tglx@linutronix.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).