[ARM] 3257/1: ixp2000: map in scratch and sram

Patch from Lennert Buytenhek

For the ixp2000 netdev driver, we need to map in a chunk of SRAM (to
store the transmit and receive descriptors) and the scratch get/put
area (so that we can use the scratchpad rings in the cpu for managing
the descriptors.)  These are the final two mappings needed for the
netdev driver and the last missing piece for the driver in mainline
to work.

Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 10 insertions, 0 deletions

diff --git a/include/asm-arm/arch-ixp2000/ixp2000-regs.h b/include/asm-arm/arch-ixp2000/ixp2000-regs.h
index 8cf70ff160af..2b57f91b4ebd 100644
--- a/include/asm-arm/arch-ixp2000/ixp2000-regs.h
+++ b/include/asm-arm/arch-ixp2000/ixp2000-regs.h
@@ -26,6 +26,8 @@
  * fc000000     da000000        16M             PCI CFG0
  * fd000000     d8000000        16M             PCI I/O
  * fe[0-7]00000                 8M              per-platform mappings
+ * fe900000     80000000        1M              SRAM #0 (first MB)
+ * fea00000     cb400000        1M              SCRATCH ring get/put
  * feb00000     c8000000        1M              MSF
  * fec00000     df000000        1M              PCI CSRs
  * fed00000     de000000        1M              PCI CREG
@@ -91,6 +93,14 @@
 #define IXP2000_MSF_VIRT_BASE           0xfeb00000
 #define IXP2000_MSF_SIZE                0x00100000
 
+#define IXP2000_SCRATCH_RING_PHYS_BASE  0xcb400000
+#define IXP2000_SCRATCH_RING_VIRT_BASE  0xfea00000
+#define IXP2000_SCRATCH_RING_SIZE       0x00100000
+
+#define IXP2000_SRAM0_PHYS_BASE         0x80000000
+#define IXP2000_SRAM0_VIRT_BASE         0xfe900000
+#define IXP2000_SRAM0_SIZE              0x00100000
+
 #define IXP2000_PCI_IO_PHYS_BASE        0xd8000000
 #define IXP2000_PCI_IO_VIRT_BASE        0xfd000000
 #define IXP2000_PCI_IO_SIZE             0x01000000