ARM: Orion: Set eth packet size csum offload limit

The mv643xx ethernet controller limits the packet size for the TX
checksum offloading. This patch sets this limits for Kirkwood and
Dove which have smaller limits that the default.

As a side note, this patch is an updated version of a patch sent some years
ago: http://lists.infradead.org/pipermail/linux-arm-kernel/2010-June/017320.html
which seems to have been lost.

Signed-off-by: Arnaud Patard <arnaud.patard@rtp-net.org>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
Cc: <stable@vger.kernel.org>

diff --git a/arch/arm/mach-dove/common.c b/arch/arm/mach-dove/common.c
index 4db5de54b6a7e1658639dc8888a79ec8cede8cc7..6321567d8eaa0c97a3cdaba3fe2664cf7a1ece6c 100644 (file)
--- a/arch/arm/mach-dove/common.c
+++ b/arch/arm/mach-dove/common.c
@@ -102,7 +102,8 @@ void __init dove_ehci1_init(void)
 void __init dove_ge00_init(struct mv643xx_eth_platform_data *eth_data)
 {
        orion_ge00_init(eth_data, DOVE_GE00_PHYS_BASE,
-                       IRQ_DOVE_GE00_SUM, IRQ_DOVE_GE00_ERR);
+                       IRQ_DOVE_GE00_SUM, IRQ_DOVE_GE00_ERR,
+                       1600);
 }
 
 /*****************************************************************************

diff --git a/arch/arm/mach-kirkwood/common.c b/arch/arm/mach-kirkwood/common.c
index c4b64adcbfce4be58c7a9b149df9e33d19e02e51..3226077735b1d7104627f8f40307e84c97d4ca5b 100644 (file)
--- a/arch/arm/mach-kirkwood/common.c
+++ b/arch/arm/mach-kirkwood/common.c
@@ -301,7 +301,7 @@ void __init kirkwood_ge00_init(struct mv643xx_eth_platform_data *eth_data)
 {
        orion_ge00_init(eth_data,
                        GE00_PHYS_BASE, IRQ_KIRKWOOD_GE00_SUM,
-                       IRQ_KIRKWOOD_GE00_ERR);
+                       IRQ_KIRKWOOD_GE00_ERR, 1600);
        /* The interface forgets the MAC address assigned by u-boot if
        the clock is turned off, so claim the clk now. */
        clk_prepare_enable(ge0);
@@ -315,7 +315,7 @@ void __init kirkwood_ge01_init(struct mv643xx_eth_platform_data *eth_data)
 {
        orion_ge01_init(eth_data,
                        GE01_PHYS_BASE, IRQ_KIRKWOOD_GE01_SUM,
-                       IRQ_KIRKWOOD_GE01_ERR);
+                       IRQ_KIRKWOOD_GE01_ERR, 1600);
        clk_prepare_enable(ge1);
 }
 

diff --git a/arch/arm/mach-mv78xx0/common.c b/arch/arm/mach-mv78xx0/common.c
index b4c53b846c9caa8402ce764aec9f9f254379031a..3057f7d4329a7f3a17b247e5ce31df4e7f21643a 100644 (file)
--- a/arch/arm/mach-mv78xx0/common.c
+++ b/arch/arm/mach-mv78xx0/common.c
@@ -213,7 +213,8 @@ void __init mv78xx0_ge00_init(struct mv643xx_eth_platform_data *eth_data)
 {
        orion_ge00_init(eth_data,
                        GE00_PHYS_BASE, IRQ_MV78XX0_GE00_SUM,
-                       IRQ_MV78XX0_GE_ERR);
+                       IRQ_MV78XX0_GE_ERR,
+                       MV643XX_TX_CSUM_DEFAULT_LIMIT);
 }
 
 
@@ -224,7 +225,8 @@ void __init mv78xx0_ge01_init(struct mv643xx_eth_platform_data *eth_data)
 {
        orion_ge01_init(eth_data,
                        GE01_PHYS_BASE, IRQ_MV78XX0_GE01_SUM,
-                       NO_IRQ);
+                       NO_IRQ,
+                       MV643XX_TX_CSUM_DEFAULT_LIMIT);
 }
 
 

diff --git a/arch/arm/mach-orion5x/common.c b/arch/arm/mach-orion5x/common.c
index 9148b229d0de925b4f95fea5154421fa462331ba..410291c676668befcfe5b43723af071ba153e5db 100644 (file)
--- a/arch/arm/mach-orion5x/common.c
+++ b/arch/arm/mach-orion5x/common.c
@@ -109,7 +109,8 @@ void __init orion5x_eth_init(struct mv643xx_eth_platform_data *eth_data)
 {
        orion_ge00_init(eth_data,
                        ORION5X_ETH_PHYS_BASE, IRQ_ORION5X_ETH_SUM,
-                       IRQ_ORION5X_ETH_ERR);
+                       IRQ_ORION5X_ETH_ERR,
+                       MV643XX_TX_CSUM_DEFAULT_LIMIT);
 }
 
 

diff --git a/arch/arm/plat-orion/common.c b/arch/arm/plat-orion/common.c
index d245a87dc014d4c6cf3d1c9a3285add47a56ecb5..b8b747a9d360110e9ca24b505f5249a730209e3e 100644 (file)
--- a/arch/arm/plat-orion/common.c
+++ b/arch/arm/plat-orion/common.c
@@ -291,10 +291,12 @@ static struct platform_device orion_ge00 = {
 void __init orion_ge00_init(struct mv643xx_eth_platform_data *eth_data,
                            unsigned long mapbase,
                            unsigned long irq,
-                           unsigned long irq_err)
+                           unsigned long irq_err,
+                           unsigned int tx_csum_limit)
 {
        fill_resources(&orion_ge00_shared, orion_ge00_shared_resources,
                       mapbase + 0x2000, SZ_16K - 1, irq_err);
+       orion_ge00_shared_data.tx_csum_limit = tx_csum_limit;
        ge_complete(&orion_ge00_shared_data,
                    orion_ge00_resources, irq, &orion_ge00_shared,
                    eth_data, &orion_ge00);
@@ -343,10 +345,12 @@ static struct platform_device orion_ge01 = {
 void __init orion_ge01_init(struct mv643xx_eth_platform_data *eth_data,
                            unsigned long mapbase,
                            unsigned long irq,
-                           unsigned long irq_err)
+                           unsigned long irq_err,
+                           unsigned int tx_csum_limit)
 {
        fill_resources(&orion_ge01_shared, orion_ge01_shared_resources,
                       mapbase + 0x2000, SZ_16K - 1, irq_err);
+       orion_ge01_shared_data.tx_csum_limit = tx_csum_limit;
        ge_complete(&orion_ge01_shared_data,
                    orion_ge01_resources, irq, &orion_ge01_shared,
                    eth_data, &orion_ge01);

diff --git a/arch/arm/plat-orion/include/plat/common.h b/arch/arm/plat-orion/include/plat/common.h
index e00fdb2136090154ea930c9f224365677644444e..ae2377ef63e5d9c455e07a4c8db7590f8935d4dc 100644 (file)
--- a/arch/arm/plat-orion/include/plat/common.h
+++ b/arch/arm/plat-orion/include/plat/common.h
@@ -39,12 +39,14 @@ void __init orion_rtc_init(unsigned long mapbase,
 void __init orion_ge00_init(struct mv643xx_eth_platform_data *eth_data,
                            unsigned long mapbase,
                            unsigned long irq,
-                           unsigned long irq_err);
+                           unsigned long irq_err,
+                           unsigned int tx_csum_limit);
 
 void __init orion_ge01_init(struct mv643xx_eth_platform_data *eth_data,
                            unsigned long mapbase,
                            unsigned long irq,
-                           unsigned long irq_err);
+                           unsigned long irq_err,
+                           unsigned int tx_csum_limit);
 
 void __init orion_ge10_init(struct mv643xx_eth_platform_data *eth_data,
                            unsigned long mapbase,

diff --git a/include/linux/mv643xx_eth.h b/include/linux/mv643xx_eth.h
index 51bf8ada6dc0166b103c4d11067d92fbb2496d78..49258e0ed1c679e4dfacc488b8e94aa49e7d815e 100644 (file)
--- a/include/linux/mv643xx_eth.h
+++ b/include/linux/mv643xx_eth.h
@@ -15,6 +15,8 @@
 #define MV643XX_ETH_SIZE_REG_4         0x2224
 #define MV643XX_ETH_BASE_ADDR_ENABLE_REG       0x2290
 
+#define MV643XX_TX_CSUM_DEFAULT_LIMIT  0
+
 struct mv643xx_eth_shared_platform_data {
        struct mbus_dram_target_info    *dram;
        struct platform_device  *shared_smi;