[oe-commits] : linux omap git: add patch to fix irq -33 problem
OE GIT Trial
gittrial at amethyst.openembedded.net
Thu Oct 9 07:47:09 UTC 2008
Module: org.openembedded.dev.git
Branch: org.openembedded.dev
Commit: a048be2b3cd603ec020119caeaa857bf636a0032
URL: http://gitweb.openembedded.net/?p=org.openembedded.dev.git&a=commit;h=a048be2b3cd603ec020119caeaa857bf636a0032
Author: <koen at openembedded.org>
Date: Thu Oct 9 07:41:24 2008 +0000
linux omap git: add patch to fix irq -33 problem
---
packages/linux/linux-omap/fix-irq33.diff | 111 ++++++++++++++++++++++++++++++
packages/linux/linux-omap_git.bb | 3 +-
2 files changed, 113 insertions(+), 1 deletions(-)
diff --git a/packages/linux/linux-omap/fix-irq33.diff b/packages/linux/linux-omap/fix-irq33.diff
new file mode 100644
index 0000000..709f042
--- /dev/null
+++ b/packages/linux/linux-omap/fix-irq33.diff
@@ -0,0 +1,111 @@
+From: "Nathan Monson" <nmonson at gmail.com>
+To: "linux-omap at vger.kernel.org List" <linux-omap at vger.kernel.org>
+Subject: Re: omapfb: help from userspace
+Cc: "TK, Pratheesh Gangadhar" <pratheesh at ti.com>
+
+On Wed, Oct 8, 2008 at 11:36 AM, Nathan Monson <nmonson at gmail.com> wrote:
+> "Felipe Contreras" <felipe.contreras at gmail.com> writes:
+>> irq -33, desc: c0335cf8, depth: 0, count: 0, unhandled: 0
+>
+> On the BeagleBoard list, Pratheesh Gangadhar said that mapping I/O
+> regions as Strongly Ordered suppresses this problem:
+> http://groups.google.com/group/beagleboard/browse_thread/thread/23e1c95b4bfb09b5/70d12dca569ca503?show_docid=70d12dca569ca503
+
+Pratheesh helped me make a patch against the latest linux-omap git to
+try this.
+
+With this patch, my IRQ -33 problems with the DSP have disappeared.
+Before, I would end up in IRQ -33 loop after 10 invocations of the DSP
+Bridge 'ping.out' utility. I just finished running it 50,000 times
+without error.
+
+As stated before, this patch is just a workaround for testing
+purposes, not a fix. Who knows what performance side effects it
+has...
+
+---
+diff --git a/arch/arm/include/asm/mach/map.h b/arch/arm/include/asm/mach/map.h
+index 9eb936e..5cb4f5f 100644
+--- a/arch/arm/include/asm/mach/map.h
++++ b/arch/arm/include/asm/mach/map.h
+@@ -25,6 +25,7 @@ struct map_desc {
+ #define MT_HIGH_VECTORS 8
+ #define MT_MEMORY 9
+ #define MT_ROM 10
++#define MT_MEMORY_SO 11
+
+ #define MT_NONSHARED_DEVICE MT_DEVICE_NONSHARED
+ #define MT_IXP2000_DEVICE MT_DEVICE_IXP2000
+diff --git a/arch/arm/mach-omap2/io.c b/arch/arm/mach-omap2/io.c
+index adbe21f..c11c0e8 100644
+--- a/arch/arm/mach-omap2/io.c
++++ b/arch/arm/mach-omap2/io.c
+@@ -119,13 +119,13 @@ static struct map_desc omap34xx_io_desc[] __initdata = {
+ .virtual = L3_34XX_VIRT,
+ .pfn = __phys_to_pfn(L3_34XX_PHYS),
+ .length = L3_34XX_SIZE,
+- .type = MT_DEVICE
++ .type = MT_MEMORY_SO
+ },
+ {
+ .virtual = L4_34XX_VIRT,
+ .pfn = __phys_to_pfn(L4_34XX_PHYS),
+ .length = L4_34XX_SIZE,
+- .type = MT_DEVICE
++ .type = MT_MEMORY_SO
+ },
+ {
+ .virtual = L4_WK_34XX_VIRT,
+@@ -137,19 +137,19 @@ static struct map_desc omap34xx_io_desc[] __initdata = {
+ .virtual = OMAP34XX_GPMC_VIRT,
+ .pfn = __phys_to_pfn(OMAP34XX_GPMC_PHYS),
+ .length = OMAP34XX_GPMC_SIZE,
+- .type = MT_DEVICE
++ .type = MT_MEMORY_SO
+ },
+ {
+ .virtual = OMAP343X_SMS_VIRT,
+ .pfn = __phys_to_pfn(OMAP343X_SMS_PHYS),
+ .length = OMAP343X_SMS_SIZE,
+- .type = MT_DEVICE
++ .type = MT_MEMORY_SO
+ },
+ {
+ .virtual = OMAP343X_SDRC_VIRT,
+ .pfn = __phys_to_pfn(OMAP343X_SDRC_PHYS),
+ .length = OMAP343X_SDRC_SIZE,
+- .type = MT_DEVICE
++ .type = MT_MEMORY_SO
+ },
+ {
+ .virtual = L4_PER_34XX_VIRT,
+@@ -161,7 +161,7 @@ static struct map_desc omap34xx_io_desc[] __initdata = {
+ .virtual = L4_EMU_34XX_VIRT,
+ .pfn = __phys_to_pfn(L4_EMU_34XX_PHYS),
+ .length = L4_EMU_34XX_SIZE,
+- .type = MT_DEVICE
++ .type = MT_MEMORY_SO
+ },
+ };
+ #endif
+diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c
+index a713e40..d5f25ad 100644
+--- a/arch/arm/mm/mmu.c
++++ b/arch/arm/mm/mmu.c
+@@ -245,6 +245,10 @@ static struct mem_type mem_types[] = {
+ .prot_sect = PMD_TYPE_SECT,
+ .domain = DOMAIN_KERNEL,
+ },
++ [MT_MEMORY_SO] = {
++ .prot_sect = PMD_TYPE_SECT | PMD_SECT_AP_WRITE | PMD_SECT_UNCACHED,
++ .domain = DOMAIN_KERNEL,
++ },
+ };
+
+ const struct mem_type *get_mem_type(unsigned int type)
+--
+--
+To unsubscribe from this list: send the line "unsubscribe linux-omap" in
+the body of a message to majordomo at vger.kernel.org
+More majordomo info at http://vger.kernel.org/majordomo-info.html
+
diff --git a/packages/linux/linux-omap_git.bb b/packages/linux/linux-omap_git.bb
index a81cec8..14de954 100644
--- a/packages/linux/linux-omap_git.bb
+++ b/packages/linux/linux-omap_git.bb
@@ -9,7 +9,7 @@ COMPATIBLE_MACHINE = "omap5912osk|omap1710h3|omap2430sdp|omap2420h4|beagleboard|
SRCREV = "e1c49d7d22af768188e2a54c167ed79919361e55"
PV = "2.6.26+2.6.27-rc7+${PR}+git${SRCREV}"
-PR = "r13"
+PR = "r14"
SRC_URI = "git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6.git;protocol=git \
file://defconfig"
@@ -35,6 +35,7 @@ SRC_URI_append = " \
file://mru-256MB.diff;patch=1 \
file://musb-fix-endpoints.diff;patch=1 \
file://dvb-fix-dma.diff;patch=1 \
+ file://fix-irq33.diff;patch=1 \
"
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