NET: au1000_eth: Pass MACDMA address through platform resource info.

This patch removes the last hardcoded base address from the au1000_eth
driver.  The base address of the MACDMA unit was derived from the
platform device id; if someone registered the MACs in inverse order
both would not work.
So instead pass the base address of the DMA unit to the driver with
the other platform resource information.

Signed-off-by: Manuel Lauss <manuel.lauss@googlemail.com>
Acked-by: David S. Miller <davem@davemloft.net>
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2674/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 21 insertions, 9 deletions

diff --git a/arch/mips/alchemy/common/platform.c b/arch/mips/alchemy/common/platform.c
index f72c48d4804c..15d9b2f14262 100644
--- a/arch/mips/alchemy/common/platform.c
+++ b/arch/mips/alchemy/common/platform.c
@@ -373,8 +373,8 @@ static struct platform_device pbdb_smbus_device = {
 #endif
 
 /* Macro to help defining the Ethernet MAC resources */
-#define MAC_RES_COUNT   3       /* MAC regs base, MAC enable reg, MAC INT */
-#define MAC_RES(_base, _enable, _irq)                   \
+#define MAC_RES_COUNT   4       /* MAC regs, MAC en, MAC INT, MACDMA regs */
+#define MAC_RES(_base, _enable, _irq, _macdma)          \
         {                                               \
                 .start  = _base,                        \
                 .end    = _base + 0xffff,               \
@@ -389,28 +389,37 @@ static struct platform_device pbdb_smbus_device = {
                 .start  = _irq,                         \
                 .end    = _irq,                         \
                 .flags  = IORESOURCE_IRQ                \
+        },                                              \
+        {                                               \
+                .start  = _macdma,                      \
+                .end    = _macdma + 0x1ff,              \
+                .flags  = IORESOURCE_MEM,               \
         }
 
 static struct resource au1xxx_eth0_resources[][MAC_RES_COUNT] __initdata = {
         [ALCHEMY_CPU_AU1000] = {
                 MAC_RES(AU1000_MAC0_PHYS_ADDR,
                         AU1000_MACEN_PHYS_ADDR,
-                        AU1000_MAC0_DMA_INT)
+                        AU1000_MAC0_DMA_INT,
+                        AU1000_MACDMA0_PHYS_ADDR)
         },
         [ALCHEMY_CPU_AU1500] = {
                 MAC_RES(AU1500_MAC0_PHYS_ADDR,
                         AU1500_MACEN_PHYS_ADDR,
-                        AU1500_MAC0_DMA_INT)
+                        AU1500_MAC0_DMA_INT,
+                        AU1000_MACDMA0_PHYS_ADDR)
         },
         [ALCHEMY_CPU_AU1100] = {
                 MAC_RES(AU1000_MAC0_PHYS_ADDR,
                         AU1000_MACEN_PHYS_ADDR,
-                        AU1100_MAC0_DMA_INT)
+                        AU1100_MAC0_DMA_INT,
+                        AU1000_MACDMA0_PHYS_ADDR)
         },
         [ALCHEMY_CPU_AU1550] = {
                 MAC_RES(AU1000_MAC0_PHYS_ADDR,
                         AU1000_MACEN_PHYS_ADDR,
-                        AU1550_MAC0_DMA_INT)
+                        AU1550_MAC0_DMA_INT,
+                        AU1000_MACDMA0_PHYS_ADDR)
         },
 };
 
@@ -429,17 +438,20 @@ static struct resource au1xxx_eth1_resources[][MAC_RES_COUNT] __initdata = {
         [ALCHEMY_CPU_AU1000] = {
                 MAC_RES(AU1000_MAC1_PHYS_ADDR,
                         AU1000_MACEN_PHYS_ADDR + 4,
-                        AU1000_MAC1_DMA_INT)
+                        AU1000_MAC1_DMA_INT,
+                        AU1000_MACDMA1_PHYS_ADDR)
         },
         [ALCHEMY_CPU_AU1500] = {
                 MAC_RES(AU1500_MAC1_PHYS_ADDR,
                         AU1500_MACEN_PHYS_ADDR + 4,
-                        AU1500_MAC1_DMA_INT)
+                        AU1500_MAC1_DMA_INT,
+                        AU1000_MACDMA1_PHYS_ADDR)
         },
         [ALCHEMY_CPU_AU1550] = {
                 MAC_RES(AU1000_MAC1_PHYS_ADDR,
                         AU1000_MACEN_PHYS_ADDR + 4,
-                        AU1550_MAC1_DMA_INT)
+                        AU1550_MAC1_DMA_INT,
+                        AU1000_MACDMA1_PHYS_ADDR)
         },
 };