linux-kernel - [PATCH v2 5/7] resource: add window support

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Date:	Fri, 05 Mar 2010 10:47:47 -0700
From:	Bjorn Helgaas <bjorn.helgaas@...com>
To:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Len Brown <lenb@...nel.org>
Cc:	linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org,
	Adam Belay <abelay@....edu>
Subject: [PATCH v2 5/7] resource: add window support


Add support for resource windows.  This is for bridge resources, i.e.,
regions where a bridge forwards transactions from the primary to the
secondary side.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@...com>
---

 include/linux/ioport.h |    1 +
 lib/vsprintf.c         |    4 +++-
 2 files changed, 4 insertions(+), 1 deletions(-)


diff --git a/include/linux/ioport.h b/include/linux/ioport.h
index 510e4ac..71ab79d 100644
--- a/include/linux/ioport.h
+++ b/include/linux/ioport.h
@@ -51,6 +51,7 @@ struct resource_list {
 #define IORESOURCE_STARTALIGN	0x00080000	/* start field is alignment */
 
 #define IORESOURCE_MEM_64	0x00100000
+#define IORESOURCE_WINDOW	0x00200000	/* forwarded by bridge */
 
 #define IORESOURCE_EXCLUSIVE	0x08000000	/* Userland may not map this resource */
 #define IORESOURCE_DISABLED	0x10000000
diff --git a/lib/vsprintf.c b/lib/vsprintf.c
index bcabb2f..adb5b19 100644
--- a/lib/vsprintf.c
+++ b/lib/vsprintf.c
@@ -635,7 +635,7 @@ static char *resource_string(char *buf, char *end, struct resource *res,
 	 * 64-bit res (sizeof==8): 20 chars in dec, 18 in hex ("0x" + 16) */
 #define RSRC_BUF_SIZE		((2 * sizeof(resource_size_t)) + 4)
 #define FLAG_BUF_SIZE		(2 * sizeof(res->flags))
-#define DECODED_BUF_SIZE	sizeof("[mem - 64bit pref disabled]")
+#define DECODED_BUF_SIZE	sizeof("[mem - 64bit pref window disabled]")
 #define RAW_BUF_SIZE		sizeof("[mem - flags 0x]")
 	char sym[max(2*RSRC_BUF_SIZE + DECODED_BUF_SIZE,
 		     2*RSRC_BUF_SIZE + FLAG_BUF_SIZE + RAW_BUF_SIZE)];
@@ -675,6 +675,8 @@ static char *resource_string(char *buf, char *end, struct resource *res,
 			p = string(p, pend, " 64bit", str_spec);
 		if (res->flags & IORESOURCE_PREFETCH)
 			p = string(p, pend, " pref", str_spec);
+		if (res->flags & IORESOURCE_WINDOW)
+			p = string(p, pend, " window", str_spec);
 		if (res->flags & IORESOURCE_DISABLED)
 			p = string(p, pend, " disabled", str_spec);
 	} else {

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