From 96f4f14964f37065105bfee48482ebc7d60d4f38 Mon Sep 17 00:00:00 2001 From: Siva Durga Prasad Paladugu Date: Sat, 6 Dec 2014 12:57:53 +0530 Subject: [PATCH] zynqmp: gem: Flush the rx buffers while transmitting 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 Signed-off-by: Michal Simek --- 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 df8452acc5..eca7feeae9 100644 --- a/drivers/net/zynq_gem.c +++ b/drivers/net/zynq_gem.c @@ -20,6 +20,7 @@ #include #include #include +#include #include #include @@ -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); -- 2.25.1