From: Siva Durga Prasad Paladugu siva.durga.paladugu@xilinx.com
Flush and invalidate the rx buffers while sending the tx packet it self as armv8 does flush also while doing invalidation.
Signed-off-by: Siva Durga Prasad Paladugu sivadur@xilinx.com Signed-off-by: Michal Simek michal.simek@xilinx.com ---
drivers/net/zynq_gem.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-)
diff --git a/drivers/net/zynq_gem.c b/drivers/net/zynq_gem.c index 22195805e6d6..523f95ccfde4 100644 --- a/drivers/net/zynq_gem.c +++ b/drivers/net/zynq_gem.c @@ -20,6 +20,7 @@ #include <phy.h> #include <miiphy.h> #include <watchdog.h> +#include <asm/system.h> #include <asm/arch/hardware.h> #include <asm/arch/sys_proto.h>
@@ -408,6 +409,11 @@ static int zynq_gem_send(struct eth_device *dev, void *ptr, int len) addr &= ~(ARCH_DMA_MINALIGN - 1); size = roundup(len, ARCH_DMA_MINALIGN); flush_dcache_range(addr, addr + size); + + addr = (u32)priv->rxbuffers; + addr &= ~(ARCH_DMA_MINALIGN - 1); + size = roundup((RX_BUF * PKTSIZE_ALIGN), ARCH_DMA_MINALIGN); + flush_dcache_range(addr, addr + size); barrier();
/* Start transmit */ @@ -443,8 +449,6 @@ static int zynq_gem_recv(struct eth_device *dev) if (frame_len) { u32 addr = current_bd->addr & ZYNQ_GEM_RXBUF_ADD_MASK; addr &= ~(ARCH_DMA_MINALIGN - 1); - u32 size = roundup(frame_len, ARCH_DMA_MINALIGN); - invalidate_dcache_range(addr, addr + size);
net_process_received_packet((u8 *)addr, frame_len);
@@ -518,7 +522,7 @@ int zynq_gem_initialize(bd_t *bis, phys_addr_t base_addr, priv->rxbuffers = memalign(ARCH_DMA_MINALIGN, RX_BUF * PKTSIZE_ALIGN); memset(priv->rxbuffers, 0, RX_BUF * PKTSIZE_ALIGN);
- /* Align bd_space to 1MB */ + /* Align bd_space to MMU_SECTION_SHIFT */ bd_space = memalign(1 << MMU_SECTION_SHIFT, BD_SPACE); mmu_set_region_dcache_behaviour((phys_addr_t)bd_space, BD_SPACE, DCACHE_OFF);