diff options
Diffstat (limited to 'drivers/net/ethernet/freescale/enetc/enetc.h')
| -rw-r--r-- | drivers/net/ethernet/freescale/enetc/enetc.h | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/drivers/net/ethernet/freescale/enetc/enetc.h b/drivers/net/ethernet/freescale/enetc/enetc.h index fb39e406b7fc..68d806dc3701 100644 --- a/drivers/net/ethernet/freescale/enetc/enetc.h +++ b/drivers/net/ethernet/freescale/enetc/enetc.h @@ -18,6 +18,8 @@ #define ENETC_MAX_MTU (ENETC_MAC_MAXFRM_SIZE - \ (ETH_FCS_LEN + ETH_HLEN + VLAN_HLEN)) +#define ENETC_CBD_DATA_MEM_ALIGN 64 + struct enetc_tx_swbd { union { struct sk_buff *skb; @@ -415,6 +417,42 @@ int enetc_get_rss_table(struct enetc_si *si, u32 *table, int count); int enetc_set_rss_table(struct enetc_si *si, const u32 *table, int count); int enetc_send_cmd(struct enetc_si *si, struct enetc_cbd *cbd); +static inline void *enetc_cbd_alloc_data_mem(struct enetc_si *si, + struct enetc_cbd *cbd, + int size, dma_addr_t *dma, + void **data_align) +{ + struct enetc_cbdr *ring = &si->cbd_ring; + dma_addr_t dma_align; + void *data; + + data = dma_alloc_coherent(ring->dma_dev, + size + ENETC_CBD_DATA_MEM_ALIGN, + dma, GFP_KERNEL); + if (!data) { + dev_err(ring->dma_dev, "CBD alloc data memory failed!\n"); + return NULL; + } + + dma_align = ALIGN(*dma, ENETC_CBD_DATA_MEM_ALIGN); + *data_align = PTR_ALIGN(data, ENETC_CBD_DATA_MEM_ALIGN); + + cbd->addr[0] = cpu_to_le32(lower_32_bits(dma_align)); + cbd->addr[1] = cpu_to_le32(upper_32_bits(dma_align)); + cbd->length = cpu_to_le16(size); + + return data; +} + +static inline void enetc_cbd_free_data_mem(struct enetc_si *si, int size, + void *data, dma_addr_t *dma) +{ + struct enetc_cbdr *ring = &si->cbd_ring; + + dma_free_coherent(ring->dma_dev, size + ENETC_CBD_DATA_MEM_ALIGN, + data, *dma); +} + #ifdef CONFIG_FSL_ENETC_QOS int enetc_setup_tc_taprio(struct net_device *ndev, void *type_data); void enetc_sched_speed_set(struct enetc_ndev_priv *priv, int speed); |