diff options
Diffstat (limited to 'drivers/net/ethernet/freescale/gianfar.h')
| -rw-r--r-- | drivers/net/ethernet/freescale/gianfar.h | 77 |
1 files changed, 53 insertions, 24 deletions
diff --git a/drivers/net/ethernet/freescale/gianfar.h b/drivers/net/ethernet/freescale/gianfar.h index 5545e4103368..8c1994856e93 100644 --- a/drivers/net/ethernet/freescale/gianfar.h +++ b/drivers/net/ethernet/freescale/gianfar.h @@ -71,11 +71,6 @@ struct ethtool_rx_list { /* Number of bytes to align the rx bufs to */ #define RXBUF_ALIGNMENT 64 -/* The number of bytes which composes a unit for the purpose of - * allocating data buffers. ie-for any given MTU, the data buffer - * will be the next highest multiple of 512 bytes. */ -#define INCREMENTAL_BUFFER_SIZE 512 - #define PHY_INIT_TIMEOUT 100000 #define DRV_NAME "gfar-enet" @@ -92,6 +87,8 @@ extern const char gfar_driver_version[]; #define DEFAULT_TX_RING_SIZE 256 #define DEFAULT_RX_RING_SIZE 256 +#define GFAR_RX_BUFF_ALLOC 16 + #define GFAR_RX_MAX_RING_SIZE 256 #define GFAR_TX_MAX_RING_SIZE 256 @@ -103,11 +100,14 @@ extern const char gfar_driver_version[]; #define DEFAULT_RX_LFC_THR 16 #define DEFAULT_LFC_PTVVAL 4 -#define DEFAULT_RX_BUFFER_SIZE 1536 +#define GFAR_RXB_SIZE 1536 +#define GFAR_SKBFRAG_SIZE (RXBUF_ALIGNMENT + GFAR_RXB_SIZE \ + + SKB_DATA_ALIGN(sizeof(struct skb_shared_info))) +#define GFAR_RXB_TRUESIZE 2048 + #define TX_RING_MOD_MASK(size) (size-1) #define RX_RING_MOD_MASK(size) (size-1) -#define JUMBO_BUFFER_SIZE 9728 -#define JUMBO_FRAME_SIZE 9600 +#define GFAR_JUMBO_FRAME_SIZE 9600 #define DEFAULT_FIFO_TX_THR 0x100 #define DEFAULT_FIFO_TX_STARVE 0x40 @@ -640,6 +640,7 @@ struct rmon_mib }; struct gfar_extra_stats { + atomic64_t rx_alloc_err; atomic64_t rx_large; atomic64_t rx_short; atomic64_t rx_nonoctet; @@ -651,7 +652,6 @@ struct gfar_extra_stats { atomic64_t eberr; atomic64_t tx_babt; atomic64_t tx_underrun; - atomic64_t rx_skbmissing; atomic64_t tx_timeout; }; @@ -1012,34 +1012,42 @@ struct rx_q_stats { unsigned long rx_dropped; }; +struct gfar_rx_buff { + dma_addr_t dma; + struct page *page; + unsigned int page_offset; +}; + /** * struct gfar_priv_rx_q - per rx queue structure - * @rx_skbuff: skb pointers - * @skb_currx: currently use skb pointer + * @rx_buff: Array of buffer info metadata structs * @rx_bd_base: First rx buffer descriptor - * @cur_rx: Next free rx ring entry + * @next_to_use: index of the next buffer to be alloc'd + * @next_to_clean: index of the next buffer to be cleaned * @qindex: index of this queue - * @dev: back pointer to the dev structure + * @ndev: back pointer to net_device * @rx_ring_size: Rx ring size * @rxcoalescing: enable/disable rx-coalescing * @rxic: receive interrupt coalescing vlaue */ struct gfar_priv_rx_q { - struct sk_buff **rx_skbuff __aligned(SMP_CACHE_BYTES); - dma_addr_t rx_bd_dma_base; + struct gfar_rx_buff *rx_buff __aligned(SMP_CACHE_BYTES); struct rxbd8 *rx_bd_base; - struct rxbd8 *cur_rx; - struct net_device *dev; - struct gfar_priv_grp *grp; + struct net_device *ndev; + struct device *dev; + u16 rx_ring_size; + u16 qindex; + struct gfar_priv_grp *grp; + u16 next_to_clean; + u16 next_to_use; + u16 next_to_alloc; + struct sk_buff *skb; struct rx_q_stats stats; - u16 skb_currx; - u16 qindex; - unsigned int rx_ring_size; - /* RX Coalescing values */ + u32 __iomem *rfbptr; unsigned char rxcoalescing; unsigned long rxic; - u32 __iomem *rfbptr; + dma_addr_t rx_bd_dma_base; }; enum gfar_irqinfo_id { @@ -1109,7 +1117,6 @@ struct gfar_private { struct device *dev; struct net_device *ndev; enum gfar_errata errata; - unsigned int rx_buffer_size; u16 uses_rxfcb; u16 padding; @@ -1292,6 +1299,28 @@ static inline void gfar_clear_txbd_status(struct txbd8 *bdp) bdp->lstatus = cpu_to_be32(lstatus); } +static inline int gfar_rxbd_unused(struct gfar_priv_rx_q *rxq) +{ + if (rxq->next_to_clean > rxq->next_to_use) + return rxq->next_to_clean - rxq->next_to_use - 1; + + return rxq->rx_ring_size + rxq->next_to_clean - rxq->next_to_use - 1; +} + +static inline u32 gfar_rxbd_dma_lastfree(struct gfar_priv_rx_q *rxq) +{ + struct rxbd8 *bdp; + u32 bdp_dma; + int i; + + i = rxq->next_to_use ? rxq->next_to_use - 1 : rxq->rx_ring_size - 1; + bdp = &rxq->rx_bd_base[i]; + bdp_dma = lower_32_bits(rxq->rx_bd_dma_base); + bdp_dma += (uintptr_t)bdp - (uintptr_t)rxq->rx_bd_base; + + return bdp_dma; +} + irqreturn_t gfar_receive(int irq, void *dev_id); int startup_gfar(struct net_device *dev); void stop_gfar(struct net_device *dev); |