* [RFC/PATCH 1/4] Add firmware flags for PCIe/MSI
@ 2006-08-18 8:13 Michael Ellerman
0 siblings, 0 replies; only message in thread
From: Michael Ellerman @ 2006-08-18 8:13 UTC (permalink / raw)
To: Paul Mackerras; +Cc: linuxppc-dev
From: Jake Moilanen <moilanen@austin.ibm.com>
Add firmware flags for PCIe/MSI.
Signed-off-by: Jake Moilanen <moilanen@austin.ibm.com>
---
arch/powerpc/kernel/prom_init.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
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 */
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