diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/macb.c | 31 |
1 files changed, 23 insertions, 8 deletions
diff --git a/drivers/net/macb.c b/drivers/net/macb.c index 035109dc43..88a2c31b06 100644 --- a/drivers/net/macb.c +++ b/drivers/net/macb.c @@ -45,10 +45,17 @@ DECLARE_GLOBAL_DATA_PTR; -#define MACB_RX_BUFFER_SIZE 4096 -#define MACB_RX_RING_SIZE (MACB_RX_BUFFER_SIZE / 128) +/* + * These buffer sizes must be power of 2 and divisible + * by RX_BUFFER_MULTIPLE + */ +#define MACB_RX_BUFFER_SIZE 128 +#define GEM_RX_BUFFER_SIZE 2048 #define RX_BUFFER_MULTIPLE 64 + +#define MACB_RX_RING_SIZE 32 #define MACB_TX_RING_SIZE 16 + #define MACB_TX_TIMEOUT 1000 #define MACB_AUTONEG_TIMEOUT 5000000 @@ -95,6 +102,7 @@ struct macb_device { void *tx_buffer; struct macb_dma_desc *rx_ring; struct macb_dma_desc *tx_ring; + size_t rx_buffer_size; unsigned long rx_buffer_dma; unsigned long rx_ring_dma; @@ -395,15 +403,16 @@ static int _macb_recv(struct macb_device *macb, uchar **packetp) } if (status & MACB_BIT(RX_EOF)) { - buffer = macb->rx_buffer + 128 * macb->rx_tail; + buffer = macb->rx_buffer + + macb->rx_buffer_size * macb->rx_tail; length = status & RXBUF_FRMLEN_MASK; macb_invalidate_rx_buffer(macb); if (macb->wrapped) { unsigned int headlen, taillen; - headlen = 128 * (MACB_RX_RING_SIZE - - macb->rx_tail); + headlen = macb->rx_buffer_size * + (MACB_RX_RING_SIZE - macb->rx_tail); taillen = length - headlen; memcpy((void *)net_rx_packets[0], buffer, headlen); @@ -703,7 +712,7 @@ static void gmac_configure_dma(struct macb_device *macb) u32 buffer_size; u32 dmacfg; - buffer_size = 128 / RX_BUFFER_MULTIPLE; + buffer_size = macb->rx_buffer_size / RX_BUFFER_MULTIPLE; dmacfg = gem_readl(macb, DMACFG) & ~GEM_BF(RXBS, -1L); dmacfg |= GEM_BF(RXBS, buffer_size); @@ -748,7 +757,7 @@ static int _macb_init(struct macb_device *macb, const char *name) paddr |= MACB_BIT(RX_WRAP); macb->rx_ring[i].addr = paddr; macb->rx_ring[i].ctrl = 0; - paddr += 128; + paddr += macb->rx_buffer_size; } macb_flush_ring_desc(macb, RX); macb_flush_rx_buffer(macb); @@ -959,8 +968,14 @@ static void _macb_eth_initialize(struct macb_device *macb) int id = 0; /* This is not used by functions we call */ u32 ncfgr; + if (macb_is_gem(macb)) + macb->rx_buffer_size = GEM_RX_BUFFER_SIZE; + else + macb->rx_buffer_size = MACB_RX_BUFFER_SIZE; + /* TODO: we need check the rx/tx_ring_dma is dcache line aligned */ - macb->rx_buffer = dma_alloc_coherent(MACB_RX_BUFFER_SIZE, + macb->rx_buffer = dma_alloc_coherent(macb->rx_buffer_size * + MACB_RX_RING_SIZE, &macb->rx_buffer_dma); macb->rx_ring = dma_alloc_coherent(MACB_RX_DMA_DESC_SIZE, &macb->rx_ring_dma); |