mv643xx_eth: get rid of hungarian variable naming
Nuke some Hungarian-esque variable naming conventions: - p_ prefix for pointers - _q suffix for variables dealing with rx/tx queue state Signed-off-by: Lennert Buytenhek <buytenh@marvell.com> Acked-by: Dale Farnsworth <dale@farnsworth.org>
This commit is contained in:
Lennert Buytenhek
Родитель
fab1f6b1e2
Коммит
5daffe945a
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@ -323,21 +323,21 @@ struct mv643xx_eth_private {
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/* Tx/Rx rings managment indexes fields. For driver use */
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/* Next available and first returning Rx resource */
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int rx_curr_desc_q, rx_used_desc_q;
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int rx_curr_desc, rx_used_desc;
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/* Next available and first returning Tx resource */
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int tx_curr_desc_q, tx_used_desc_q;
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int tx_curr_desc, tx_used_desc;
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#ifdef MV643XX_ETH_TX_FAST_REFILL
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u32 tx_clean_threshold;
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#endif
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struct rx_desc *p_rx_desc_area;
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struct rx_desc *rx_desc_area;
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dma_addr_t rx_desc_dma;
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int rx_desc_area_size;
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struct sk_buff **rx_skb;
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struct tx_desc *p_tx_desc_area;
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struct tx_desc *tx_desc_area;
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dma_addr_t tx_desc_dma;
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int tx_desc_area_size;
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struct sk_buff **tx_skb;
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@ -444,31 +444,31 @@ static unsigned int mv643xx_eth_port_disable_tx(struct mv643xx_eth_private *mp)
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static void mv643xx_eth_free_completed_tx_descs(struct net_device *dev);
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static FUNC_RET_STATUS rx_return_buff(struct mv643xx_eth_private *mp,
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struct pkt_info *p_pkt_info)
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struct pkt_info *pkt_info)
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{
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int used_rx_desc; /* Where to return Rx resource */
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volatile struct rx_desc *p_used_rx_desc;
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volatile struct rx_desc *rx_desc;
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unsigned long flags;
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spin_lock_irqsave(&mp->lock, flags);
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/* Get 'used' Rx descriptor */
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used_rx_desc = mp->rx_used_desc_q;
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p_used_rx_desc = &mp->p_rx_desc_area[used_rx_desc];
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used_rx_desc = mp->rx_used_desc;
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rx_desc = &mp->rx_desc_area[used_rx_desc];
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p_used_rx_desc->buf_ptr = p_pkt_info->buf_ptr;
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p_used_rx_desc->buf_size = p_pkt_info->byte_cnt;
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mp->rx_skb[used_rx_desc] = p_pkt_info->return_info;
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rx_desc->buf_ptr = pkt_info->buf_ptr;
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rx_desc->buf_size = pkt_info->byte_cnt;
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mp->rx_skb[used_rx_desc] = pkt_info->return_info;
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/* Flush the write pipe */
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/* Return the descriptor to DMA ownership */
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wmb();
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p_used_rx_desc->cmd_sts = BUFFER_OWNED_BY_DMA | RX_ENABLE_INTERRUPT;
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rx_desc->cmd_sts = BUFFER_OWNED_BY_DMA | RX_ENABLE_INTERRUPT;
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wmb();
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/* Move the used descriptor pointer to the next descriptor */
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mp->rx_used_desc_q = (used_rx_desc + 1) % mp->rx_ring_size;
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mp->rx_used_desc = (used_rx_desc + 1) % mp->rx_ring_size;
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spin_unlock_irqrestore(&mp->lock, flags);
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@ -519,23 +519,23 @@ static inline void mv643xx_eth_rx_refill_descs_timer_wrapper(unsigned long data)
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}
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static FUNC_RET_STATUS port_receive(struct mv643xx_eth_private *mp,
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struct pkt_info *p_pkt_info)
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struct pkt_info *pkt_info)
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{
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int rx_next_curr_desc, rx_curr_desc, rx_used_desc;
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volatile struct rx_desc *p_rx_desc;
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volatile struct rx_desc *rx_desc;
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unsigned int command_status;
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unsigned long flags;
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spin_lock_irqsave(&mp->lock, flags);
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/* Get the Rx Desc ring 'curr and 'used' indexes */
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rx_curr_desc = mp->rx_curr_desc_q;
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rx_used_desc = mp->rx_used_desc_q;
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rx_curr_desc = mp->rx_curr_desc;
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rx_used_desc = mp->rx_used_desc;
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p_rx_desc = &mp->p_rx_desc_area[rx_curr_desc];
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rx_desc = &mp->rx_desc_area[rx_curr_desc];
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/* The following parameters are used to save readings from memory */
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command_status = p_rx_desc->cmd_sts;
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command_status = rx_desc->cmd_sts;
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rmb();
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/* Nothing to receive... */
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@ -544,11 +544,11 @@ static FUNC_RET_STATUS port_receive(struct mv643xx_eth_private *mp,
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return ETH_END_OF_JOB;
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}
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p_pkt_info->byte_cnt = p_rx_desc->byte_cnt - ETH_HW_IP_ALIGN;
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p_pkt_info->cmd_sts = command_status;
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p_pkt_info->buf_ptr = p_rx_desc->buf_ptr + ETH_HW_IP_ALIGN;
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p_pkt_info->return_info = mp->rx_skb[rx_curr_desc];
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p_pkt_info->l4i_chk = p_rx_desc->buf_size;
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pkt_info->byte_cnt = rx_desc->byte_cnt - ETH_HW_IP_ALIGN;
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pkt_info->cmd_sts = command_status;
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pkt_info->buf_ptr = rx_desc->buf_ptr + ETH_HW_IP_ALIGN;
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pkt_info->return_info = mp->rx_skb[rx_curr_desc];
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pkt_info->l4i_chk = rx_desc->buf_size;
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/*
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* Clean the return info field to indicate that the
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@ -558,7 +558,7 @@ static FUNC_RET_STATUS port_receive(struct mv643xx_eth_private *mp,
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/* Update current index in data structure */
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rx_next_curr_desc = (rx_curr_desc + 1) % mp->rx_ring_size;
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mp->rx_curr_desc_q = rx_next_curr_desc;
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mp->rx_curr_desc = rx_next_curr_desc;
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spin_unlock_irqrestore(&mp->lock, flags);
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@ -650,7 +650,7 @@ static int mv643xx_eth_poll(struct napi_struct *napi, int budget)
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work_done = 0;
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if ((rdl(mp, RXQ_CURRENT_DESC_PTR(port_num)))
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!= (u32) mp->rx_used_desc_q)
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!= (u32) mp->rx_used_desc)
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work_done = mv643xx_eth_receive_queue(dev, budget);
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if (work_done < budget) {
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@ -685,10 +685,10 @@ static int alloc_tx_desc_index(struct mv643xx_eth_private *mp)
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BUG_ON(mp->tx_desc_count >= mp->tx_ring_size);
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tx_desc_curr = mp->tx_curr_desc_q;
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mp->tx_curr_desc_q = (tx_desc_curr + 1) % mp->tx_ring_size;
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tx_desc_curr = mp->tx_curr_desc;
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mp->tx_curr_desc = (tx_desc_curr + 1) % mp->tx_ring_size;
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BUG_ON(mp->tx_curr_desc_q == mp->tx_used_desc_q);
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BUG_ON(mp->tx_curr_desc == mp->tx_used_desc);
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return tx_desc_curr;
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}
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@ -704,7 +704,7 @@ static void tx_fill_frag_descs(struct mv643xx_eth_private *mp,
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skb_frag_t *this_frag = &skb_shinfo(skb)->frags[frag];
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tx_index = alloc_tx_desc_index(mp);
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desc = &mp->p_tx_desc_area[tx_index];
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desc = &mp->tx_desc_area[tx_index];
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desc->cmd_sts = BUFFER_OWNED_BY_DMA;
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/* Last Frag enables interrupt and frees the skb */
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@ -716,7 +716,7 @@ static void tx_fill_frag_descs(struct mv643xx_eth_private *mp,
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} else
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mp->tx_skb[tx_index] = NULL;
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desc = &mp->p_tx_desc_area[tx_index];
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desc = &mp->tx_desc_area[tx_index];
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desc->l4i_chk = 0;
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desc->byte_cnt = this_frag->size;
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desc->buf_ptr = dma_map_page(NULL, this_frag->page,
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@ -743,7 +743,7 @@ static void tx_submit_descs_for_skb(struct mv643xx_eth_private *mp,
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cmd_sts = TX_FIRST_DESC | GEN_CRC | BUFFER_OWNED_BY_DMA;
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tx_index = alloc_tx_desc_index(mp);
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desc = &mp->p_tx_desc_area[tx_index];
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desc = &mp->tx_desc_area[tx_index];
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if (nr_frags) {
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tx_fill_frag_descs(mp, skb);
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@ -1113,7 +1113,7 @@ static const struct ethtool_ops mv643xx_eth_ethtool_ops = {
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/* address handling *********************************************************/
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static void uc_addr_get(struct mv643xx_eth_private *mp, unsigned char *p_addr)
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static void uc_addr_get(struct mv643xx_eth_private *mp, unsigned char *addr)
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{
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unsigned int port_num = mp->port_num;
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unsigned int mac_h;
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@ -1122,12 +1122,12 @@ static void uc_addr_get(struct mv643xx_eth_private *mp, unsigned char *p_addr)
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mac_h = rdl(mp, MAC_ADDR_HIGH(port_num));
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mac_l = rdl(mp, MAC_ADDR_LOW(port_num));
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p_addr[0] = (mac_h >> 24) & 0xff;
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p_addr[1] = (mac_h >> 16) & 0xff;
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p_addr[2] = (mac_h >> 8) & 0xff;
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p_addr[3] = mac_h & 0xff;
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p_addr[4] = (mac_l >> 8) & 0xff;
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p_addr[5] = mac_l & 0xff;
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addr[0] = (mac_h >> 24) & 0xff;
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addr[1] = (mac_h >> 16) & 0xff;
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addr[2] = (mac_h >> 8) & 0xff;
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addr[3] = mac_h & 0xff;
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addr[4] = (mac_l >> 8) & 0xff;
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addr[5] = mac_l & 0xff;
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}
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static void init_mac_tables(struct mv643xx_eth_private *mp)
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@ -1163,23 +1163,23 @@ static void set_filter_table_entry(struct mv643xx_eth_private *mp,
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wrl(mp, table + tbl_offset, table_reg);
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}
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static void uc_addr_set(struct mv643xx_eth_private *mp, unsigned char *p_addr)
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static void uc_addr_set(struct mv643xx_eth_private *mp, unsigned char *addr)
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{
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unsigned int port_num = mp->port_num;
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unsigned int mac_h;
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unsigned int mac_l;
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int table;
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mac_l = (p_addr[4] << 8) | (p_addr[5]);
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mac_h = (p_addr[0] << 24) | (p_addr[1] << 16) | (p_addr[2] << 8) |
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(p_addr[3] << 0);
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mac_l = (addr[4] << 8) | (addr[5]);
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mac_h = (addr[0] << 24) | (addr[1] << 16) | (addr[2] << 8) |
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(addr[3] << 0);
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wrl(mp, MAC_ADDR_LOW(port_num), mac_l);
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wrl(mp, MAC_ADDR_HIGH(port_num), mac_h);
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/* Accept frames with this address */
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table = UNICAST_TABLE(port_num);
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set_filter_table_entry(mp, table, p_addr[5] & 0x0f);
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set_filter_table_entry(mp, table, addr[5] & 0x0f);
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}
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static void mv643xx_eth_update_mac_address(struct net_device *dev)
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@ -1201,7 +1201,7 @@ static int mv643xx_eth_set_mac_address(struct net_device *dev, void *addr)
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return 0;
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}
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static void mc_addr(struct mv643xx_eth_private *mp, unsigned char *p_addr)
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static void mc_addr(struct mv643xx_eth_private *mp, unsigned char *addr)
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{
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unsigned int port_num = mp->port_num;
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unsigned int mac_h;
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@ -1212,17 +1212,17 @@ static void mc_addr(struct mv643xx_eth_private *mp, unsigned char *p_addr)
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int crc[8];
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int i;
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if ((p_addr[0] == 0x01) && (p_addr[1] == 0x00) &&
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(p_addr[2] == 0x5E) && (p_addr[3] == 0x00) && (p_addr[4] == 0x00)) {
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if ((addr[0] == 0x01) && (addr[1] == 0x00) &&
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(addr[2] == 0x5E) && (addr[3] == 0x00) && (addr[4] == 0x00)) {
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table = SPECIAL_MCAST_TABLE(port_num);
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set_filter_table_entry(mp, table, p_addr[5]);
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set_filter_table_entry(mp, table, addr[5]);
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return;
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}
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/* Calculate CRC-8 out of the given address */
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mac_h = (p_addr[0] << 8) | (p_addr[1]);
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mac_l = (p_addr[2] << 24) | (p_addr[3] << 16) |
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(p_addr[4] << 8) | (p_addr[5] << 0);
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mac_h = (addr[0] << 8) | (addr[1]);
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mac_l = (addr[2] << 24) | (addr[3] << 16) |
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(addr[4] << 8) | (addr[5] << 0);
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for (i = 0; i < 32; i++)
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mac_array[i] = (mac_l >> i) & 0x1;
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@ -1372,15 +1372,15 @@ static void ether_init_rx_desc_ring(struct mv643xx_eth_private *mp)
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int i;
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/* initialize the next_desc_ptr links in the Rx descriptors ring */
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p_rx_desc = (struct rx_desc *)mp->p_rx_desc_area;
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p_rx_desc = (struct rx_desc *)mp->rx_desc_area;
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for (i = 0; i < rx_desc_num; i++) {
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p_rx_desc[i].next_desc_ptr = mp->rx_desc_dma +
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((i + 1) % rx_desc_num) * sizeof(struct rx_desc);
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}
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/* Save Rx desc pointer to driver struct. */
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mp->rx_curr_desc_q = 0;
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mp->rx_used_desc_q = 0;
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mp->rx_curr_desc = 0;
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mp->rx_used_desc = 0;
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mp->rx_desc_area_size = rx_desc_num * sizeof(struct rx_desc);
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}
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@ -1408,10 +1408,10 @@ static void mv643xx_eth_free_rx_rings(struct net_device *dev)
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mp->rx_desc_count);
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/* Free RX ring */
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if (mp->rx_sram_size)
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iounmap(mp->p_rx_desc_area);
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iounmap(mp->rx_desc_area);
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else
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dma_free_coherent(NULL, mp->rx_desc_area_size,
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mp->p_rx_desc_area, mp->rx_desc_dma);
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mp->rx_desc_area, mp->rx_desc_dma);
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}
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static void ether_init_tx_desc_ring(struct mv643xx_eth_private *mp)
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@ -1421,14 +1421,14 @@ static void ether_init_tx_desc_ring(struct mv643xx_eth_private *mp)
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int i;
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/* Initialize the next_desc_ptr links in the Tx descriptors ring */
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p_tx_desc = (struct tx_desc *)mp->p_tx_desc_area;
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p_tx_desc = (struct tx_desc *)mp->tx_desc_area;
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for (i = 0; i < tx_desc_num; i++) {
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p_tx_desc[i].next_desc_ptr = mp->tx_desc_dma +
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((i + 1) % tx_desc_num) * sizeof(struct tx_desc);
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}
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mp->tx_curr_desc_q = 0;
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mp->tx_used_desc_q = 0;
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mp->tx_curr_desc = 0;
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mp->tx_used_desc = 0;
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mp->tx_desc_area_size = tx_desc_num * sizeof(struct tx_desc);
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}
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@ -1454,8 +1454,8 @@ static int mv643xx_eth_free_tx_descs(struct net_device *dev, int force)
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return released;
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}
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tx_index = mp->tx_used_desc_q;
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desc = &mp->p_tx_desc_area[tx_index];
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tx_index = mp->tx_used_desc;
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desc = &mp->tx_desc_area[tx_index];
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cmd_sts = desc->cmd_sts;
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if (!force && (cmd_sts & BUFFER_OWNED_BY_DMA)) {
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@ -1463,7 +1463,7 @@ static int mv643xx_eth_free_tx_descs(struct net_device *dev, int force)
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return released;
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}
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mp->tx_used_desc_q = (tx_index + 1) % mp->tx_ring_size;
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mp->tx_used_desc = (tx_index + 1) % mp->tx_ring_size;
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mp->tx_desc_count--;
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addr = desc->buf_ptr;
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@ -1517,14 +1517,14 @@ static void mv643xx_eth_free_tx_rings(struct net_device *dev)
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/* Free outstanding skb's on TX ring */
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mv643xx_eth_free_all_tx_descs(dev);
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BUG_ON(mp->tx_used_desc_q != mp->tx_curr_desc_q);
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BUG_ON(mp->tx_used_desc != mp->tx_curr_desc);
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/* Free TX ring */
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if (mp->tx_sram_size)
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iounmap(mp->p_tx_desc_area);
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iounmap(mp->tx_desc_area);
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else
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dma_free_coherent(NULL, mp->tx_desc_area_size,
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mp->p_tx_desc_area, mp->tx_desc_dma);
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mp->tx_desc_area, mp->tx_desc_dma);
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}
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@ -1663,12 +1663,12 @@ static void port_start(struct net_device *dev)
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struct ethtool_cmd ethtool_cmd;
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/* Assignment of Tx CTRP of given queue */
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tx_curr_desc = mp->tx_curr_desc_q;
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tx_curr_desc = mp->tx_curr_desc;
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wrl(mp, TXQ_CURRENT_DESC_PTR(port_num),
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(u32)((struct tx_desc *)mp->tx_desc_dma + tx_curr_desc));
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/* Assignment of Rx CRDP of given queue */
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rx_curr_desc = mp->rx_curr_desc_q;
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rx_curr_desc = mp->rx_curr_desc;
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wrl(mp, RXQ_CURRENT_DESC_PTR(port_num),
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(u32)((struct rx_desc *)mp->rx_desc_dma + rx_curr_desc));
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@ -1800,22 +1800,22 @@ static int mv643xx_eth_open(struct net_device *dev)
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mp->tx_desc_area_size = size;
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if (mp->tx_sram_size) {
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mp->p_tx_desc_area = ioremap(mp->tx_sram_addr,
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mp->tx_desc_area = ioremap(mp->tx_sram_addr,
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mp->tx_sram_size);
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mp->tx_desc_dma = mp->tx_sram_addr;
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} else
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mp->p_tx_desc_area = dma_alloc_coherent(NULL, size,
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mp->tx_desc_area = dma_alloc_coherent(NULL, size,
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&mp->tx_desc_dma,
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GFP_KERNEL);
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if (!mp->p_tx_desc_area) {
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if (!mp->tx_desc_area) {
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printk(KERN_ERR "%s: Cannot allocate Tx Ring (size %d bytes)\n",
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dev->name, size);
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err = -ENOMEM;
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goto out_free_tx_skb;
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}
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BUG_ON((u32) mp->p_tx_desc_area & 0xf); /* check 16-byte alignment */
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memset((void *)mp->p_tx_desc_area, 0, mp->tx_desc_area_size);
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BUG_ON((u32) mp->tx_desc_area & 0xf); /* check 16-byte alignment */
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memset((void *)mp->tx_desc_area, 0, mp->tx_desc_area_size);
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ether_init_tx_desc_ring(mp);
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@ -1825,28 +1825,28 @@ static int mv643xx_eth_open(struct net_device *dev)
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mp->rx_desc_area_size = size;
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if (mp->rx_sram_size) {
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mp->p_rx_desc_area = ioremap(mp->rx_sram_addr,
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mp->rx_desc_area = ioremap(mp->rx_sram_addr,
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mp->rx_sram_size);
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mp->rx_desc_dma = mp->rx_sram_addr;
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} else
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mp->p_rx_desc_area = dma_alloc_coherent(NULL, size,
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mp->rx_desc_area = dma_alloc_coherent(NULL, size,
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&mp->rx_desc_dma,
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GFP_KERNEL);
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if (!mp->p_rx_desc_area) {
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if (!mp->rx_desc_area) {
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printk(KERN_ERR "%s: Cannot allocate Rx ring (size %d bytes)\n",
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dev->name, size);
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printk(KERN_ERR "%s: Freeing previously allocated TX queues...",
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dev->name);
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if (mp->rx_sram_size)
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iounmap(mp->p_tx_desc_area);
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iounmap(mp->tx_desc_area);
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else
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dma_free_coherent(NULL, mp->tx_desc_area_size,
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mp->p_tx_desc_area, mp->tx_desc_dma);
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mp->tx_desc_area, mp->tx_desc_dma);
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err = -ENOMEM;
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goto out_free_tx_skb;
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}
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memset((void *)mp->p_rx_desc_area, 0, size);
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memset((void *)mp->rx_desc_area, 0, size);
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ether_init_rx_desc_ring(mp);
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