[2/2] of: treat PCI config space as IORESOURCE_MEM type with special flags.
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Message ID 1401496601-31983-3-git-send-email-Liviu.Dudau@arm.com
State New, archived
Headers show

Commit Message

Liviu Dudau May 31, 2014, 12:36 a.m. UTC
If we have a PCI config space specified in something like a ranges
property we should treat it as memory type resource. Use the
IORESOURCE_ECFG bit to distinguish the config space from standard
IORESOURCE_MEM resources.

Signed-off-by: Kumar Gama <galak@codeaurora.org>
[Updated commit log and added IORESOURCE_ECFG bit]
Signed-off-by: Liviu Dudau <Liviu.Dudau@arm.com>
---
 drivers/of/address.c | 3 +++
 1 file changed, 3 insertions(+)

Patch
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diff --git a/drivers/of/address.c b/drivers/of/address.c
index 2fcfbae..877e9e5 100644
--- a/drivers/of/address.c
+++ b/drivers/of/address.c
@@ -123,6 +123,9 @@  static unsigned int of_bus_pci_get_flags(const __be32 *addr)
 	u32 w = be32_to_cpup(addr);
 
 	switch((w >> 24) & 0x03) {
+	case 0x00: /* cfg space */
+		flags |= IORESOURCE_MEM | IORESOURCE_PCI_ECFG;
+		break;
 	case 0x01:
 		flags |= IORESOURCE_IO;
 		break;