Subject: Re: [RFC/PATCH 5/7] RTAS MSI implementation

From: Jake Moilanen <[email-masked]>
Date: Wed, 08 Nov 2006 14:16:00 -0600

On Tue, 2006-11-07 at 18:21 +1100, Michael Ellerman wrote:
> Powerpc MSI support via RTAS. Based on Jake's code.
> 

Missing the CAS flags to indicate to firmware that we support MSI.

Signed-off-by: Jake Moilanen <[email-masked]>

Index: git/arch/powerpc/kernel/prom_init.c
===================================================================
--- git.orig/arch/powerpc/kernel/prom_init.c
+++ git/arch/powerpc/kernel/prom_init.c
@@ -634,6 +634,12 @@ static void __init early_cmdline_parse(v
 /* ibm,dynamic-reconfiguration-memory property supported */
 #define OV5_DRCONF_MEMORY	0x20
 #define OV5_LARGE_PAGES		0x10	/* large pages supported */
+/* PCIe/MSI support. Without MSI full PCIe is not supported */
+#ifdef CONFIG_PCI_MSI
+#define OV5_MSI			0x01	/* PCIe/MSI supported */
+#else
+#define OV5_MSI			0x00
+#endif
 
 /*
  * The architecture vector has an array of PVR mask/value pairs,
@@ -677,7 +683,7 @@ static unsigned char ibm_architecture_ve
 	/* option vector 5: PAPR/OF options */
 	3 - 1,				/* length */
 	0,				/* don't ignore, don't halt */
-	OV5_LPAR | OV5_SPLPAR | OV5_LARGE_PAGES,
+	OV5_LPAR | OV5_SPLPAR | OV5_LARGE_PAGES | OV5_MSI,
 };
 
 /* Old method - ELF header with PT_NOTE sections */