linux-kernel - [Patch Part3 v4 07/38] x86, irq: Simplify the way to print IOAPIC entry

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Date:	Tue, 25 Nov 2014 15:49:31 +0800
From:	Jiang Liu <jiang.liu@...ux.intel.com>
To:	Bjorn Helgaas <bhelgaas@...gle.com>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Randy Dunlap <rdunlap@...radead.org>,
	Yinghai Lu <yinghai@...nel.org>,
	Borislav Petkov <bp@...en8.de>, x86@...nel.org,
	Jiang Liu <jiang.liu@...ux.intel.com>,
	Grant Likely <grant.likely@...aro.org>
Cc:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Tony Luck <tony.luck@...el.com>,
	Joerg Roedel <joro@...tes.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org,
	linux-acpi@...r.kernel.org
Subject: [Patch Part3 v4 07/38] x86, irq: Simplify the way to print IOAPIC entry

Simplify the way to print IOAPIC entry content, so we could kill
native_io_apic_print_entries(), intel_ir_io_apic_print_entries()
and x86_io_apic_ops.print_entries() later.

Signed-off-by: Jiang Liu <jiang.liu@...ux.intel.com>
Tested-by: Joerg Roedel <jroedel@...e.de>
---
 arch/x86/kernel/apic/io_apic.c |   30 ++++++++++++++++++++++++++++--
 1 file changed, 28 insertions(+), 2 deletions(-)

diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index 74a0e95cfb3d..b2618d48d572 100644
--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -1424,6 +1424,33 @@ void ioapic_zap_locks(void)
 	raw_spin_lock_init(&ioapic_lock);
 }
 
+static void io_apic_print_entries(unsigned int apic, unsigned int nr_entries)
+{
+	int i;
+	char buf[256];
+	struct IO_APIC_route_entry entry;
+	struct IR_IO_APIC_route_entry *ir_entry = (void *)&entry;
+
+	printk(KERN_DEBUG "IOAPIC %d:\n", apic);
+	for (i = 0; i <= nr_entries; i++) {
+		entry = ioapic_read_entry(apic, i);
+		snprintf(buf, sizeof(buf),
+			 " pin%02x, %s, %s, %s, V(%02X), IRR(%1d), S(%1d)",
+			 i, entry.mask ? "enabled" : "disabled",
+			 entry.trigger ? "level" : "edge",
+			 entry.polarity ? "high" : "low",
+			 entry.vector, entry.irr, entry.delivery_status);
+		if (ir_entry->format)
+			printk(KERN_DEBUG "%s, remapped, I(%04X),  Z(%X)\n",
+			       buf, (ir_entry->index << 15) | ir_entry->index,
+			       ir_entry->zero);
+		else
+			printk(KERN_DEBUG "%s, %s, D(%02X), M(%1d)\n",
+			       buf, entry.dest_mode ? "logical" : "physical",
+			       entry.dest, entry.delivery_mode);
+	}
+}
+
 static void __init print_IO_APIC(int ioapic_idx)
 {
 	union IO_APIC_reg_00 reg_00;
@@ -1477,8 +1504,7 @@ static void __init print_IO_APIC(int ioapic_idx)
 	}
 
 	printk(KERN_DEBUG ".... IRQ redirection table:\n");
-
-	x86_io_apic_ops.print_entries(ioapic_idx, reg_01.bits.entries);
+	io_apic_print_entries(ioapic_idx, reg_01.bits.entries);
 }
 
 void __init print_IO_APICs(void)
-- 
1.7.10.4

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