From: Li Shaohua <shaohua.li@intel.com>
To: ACPI-DEV <acpi-devel@lists.sourceforge.net>,
lkml <linux-kernel@vger.kernel.org>
Cc: Len Brown <len.brown@intel.com>, Adam Belay <ambx1@neo.rr.com>,
Matthieu <castet.matthieu@free.fr>,
Bjorn Helgaas <bjorn.helgaas@hp.com>
Subject: [PATCH 1/5]Avoid ACPI assign legacy devices' IRQ for PCI devices
Date: Thu, 21 Oct 2004 10:59:22 +0800 [thread overview]
Message-ID: <1098327558.6132.220.camel@sli10-desk.sh.intel.com> (raw)
[-- Attachment #1: Type: text/plain, Size: 2452 bytes --]
Hi,
The patch introduces acpi_penalize_isa_irq, its goal is to avoid PCI
devices use IRQ of legacy PNP devices.
Thanks,
Shaohua
Signed-off-by: Li Shaohua <shaohua.li@intel.com>
===== include/linux/acpi.h 1.36 vs edited =====
--- 1.36/include/linux/acpi.h 2004-06-02 23:02:20 +08:00
+++ edited/include/linux/acpi.h 2004-09-22 10:09:23 +08:00
@@ -439,6 +439,7 @@ extern struct acpi_prt_list acpi_prt;
struct pci_dev;
int acpi_pci_irq_enable (struct pci_dev *dev);
+void acpi_penalize_isa_irq(int irq);
struct acpi_pci_driver {
struct acpi_pci_driver *next;
===== drivers/acpi/pci_link.c 1.31 vs edited =====
--- 1.31/drivers/acpi/pci_link.c 2004-08-05 03:55:16 +08:00
+++ edited/drivers/acpi/pci_link.c 2004-09-22 10:08:09 +08:00
@@ -786,6 +786,11 @@ static int __init acpi_irq_penalty_updat
return 1;
}
+void acpi_penalize_isa_irq(int irq)
+{
+ acpi_irq_penalty[irq] += PIRQ_PENALTY_ISA_USED;
+}
+
/*
* Over-ride default table to reserve additional IRQs for use by ISA
* e.g. acpi_irq_isa=5
===== arch/i386/pci/irq.c 1.47 vs edited =====
--- 1.47/arch/i386/pci/irq.c 2004-08-02 16:00:43 +08:00
+++ edited/arch/i386/pci/irq.c 2004-09-22 10:27:30 +08:00
@@ -17,6 +17,7 @@
#include <asm/smp.h>
#include <asm/io_apic.h>
#include <asm/hw_irq.h>
+#include <linux/acpi.h>
#include "pci.h"
@@ -989,13 +990,24 @@ static int __init pcibios_irq_init(void)
subsys_initcall(pcibios_irq_init);
-void pcibios_penalize_isa_irq(int irq)
+static void pirq_penalize_isa_irq(int irq)
{
/*
* If any ISAPnP device reports an IRQ in its list of possible
* IRQ's, we try to avoid assigning it to PCI devices.
*/
- pirq_penalty[irq] += 100;
+ if (irq < 16)
+ pirq_penalty[irq] += 100;
+}
+
+void pcibios_penalize_isa_irq(int irq)
+{
+#ifdef CONFIG_ACPI_PCI
+ if (!acpi_noirq)
+ acpi_penalize_isa_irq(irq);
+ else
+#endif
+ pirq_penalize_isa_irq(irq);
}
int pirq_enable_irq(struct pci_dev *dev)
===== drivers/pnp/pnpbios/rsparser.c 1.4 vs edited =====
--- 1.4/drivers/pnp/pnpbios/rsparser.c 2004-09-14 08:23:17 +08:00
+++ edited/drivers/pnp/pnpbios/rsparser.c 2004-09-22 10:31:09 +08:00
@@ -7,6 +7,7 @@
#include <linux/ctype.h>
#include <linux/pnp.h>
#include <linux/pnpbios.h>
+#include <linux/pci.h>
#include "pnpbios.h"
@@ -58,6 +59,7 @@ pnpbios_parse_allocated_irqresource(stru
}
res->irq_resource[i].start =
res->irq_resource[i].end = (unsigned long) irq;
+ pcibios_penalize_isa_irq(irq);
}
}
[-- Attachment #2: irq-isa.patch --]
[-- Type: text/x-patch, Size: 2270 bytes --]
===== include/linux/acpi.h 1.36 vs edited =====
--- 1.36/include/linux/acpi.h 2004-06-02 23:02:20 +08:00
+++ edited/include/linux/acpi.h 2004-09-22 10:09:23 +08:00
@@ -439,6 +439,7 @@ extern struct acpi_prt_list acpi_prt;
struct pci_dev;
int acpi_pci_irq_enable (struct pci_dev *dev);
+void acpi_penalize_isa_irq(int irq);
struct acpi_pci_driver {
struct acpi_pci_driver *next;
===== drivers/acpi/pci_link.c 1.31 vs edited =====
--- 1.31/drivers/acpi/pci_link.c 2004-08-05 03:55:16 +08:00
+++ edited/drivers/acpi/pci_link.c 2004-09-22 10:08:09 +08:00
@@ -786,6 +786,11 @@ static int __init acpi_irq_penalty_updat
return 1;
}
+void acpi_penalize_isa_irq(int irq)
+{
+ acpi_irq_penalty[irq] += PIRQ_PENALTY_ISA_USED;
+}
+
/*
* Over-ride default table to reserve additional IRQs for use by ISA
* e.g. acpi_irq_isa=5
===== arch/i386/pci/irq.c 1.47 vs edited =====
--- 1.47/arch/i386/pci/irq.c 2004-08-02 16:00:43 +08:00
+++ edited/arch/i386/pci/irq.c 2004-09-22 10:27:30 +08:00
@@ -17,6 +17,7 @@
#include <asm/smp.h>
#include <asm/io_apic.h>
#include <asm/hw_irq.h>
+#include <linux/acpi.h>
#include "pci.h"
@@ -989,13 +990,24 @@ static int __init pcibios_irq_init(void)
subsys_initcall(pcibios_irq_init);
-void pcibios_penalize_isa_irq(int irq)
+static void pirq_penalize_isa_irq(int irq)
{
/*
* If any ISAPnP device reports an IRQ in its list of possible
* IRQ's, we try to avoid assigning it to PCI devices.
*/
- pirq_penalty[irq] += 100;
+ if (irq < 16)
+ pirq_penalty[irq] += 100;
+}
+
+void pcibios_penalize_isa_irq(int irq)
+{
+#ifdef CONFIG_ACPI_PCI
+ if (!acpi_noirq)
+ acpi_penalize_isa_irq(irq);
+ else
+#endif
+ pirq_penalize_isa_irq(irq);
}
int pirq_enable_irq(struct pci_dev *dev)
===== drivers/pnp/pnpbios/rsparser.c 1.4 vs edited =====
--- 1.4/drivers/pnp/pnpbios/rsparser.c 2004-09-14 08:23:17 +08:00
+++ edited/drivers/pnp/pnpbios/rsparser.c 2004-09-22 10:31:09 +08:00
@@ -7,6 +7,7 @@
#include <linux/ctype.h>
#include <linux/pnp.h>
#include <linux/pnpbios.h>
+#include <linux/pci.h>
#include "pnpbios.h"
@@ -58,6 +59,7 @@ pnpbios_parse_allocated_irqresource(stru
}
res->irq_resource[i].start =
res->irq_resource[i].end = (unsigned long) irq;
+ pcibios_penalize_isa_irq(irq);
}
}
next reply other threads:[~2004-10-21 3:29 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-10-21 2:59 Li Shaohua [this message]
2004-10-28 6:20 ` Len Brown
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=1098327558.6132.220.camel@sli10-desk.sh.intel.com \
--to=shaohua.li@intel.com \
--cc=acpi-devel@lists.sourceforge.net \
--cc=ambx1@neo.rr.com \
--cc=bjorn.helgaas@hp.com \
--cc=castet.matthieu@free.fr \
--cc=len.brown@intel.com \
--cc=linux-kernel@vger.kernel.org \
/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
all inboxes | Powered by JetHome®