staging: et131x: improve code consistency: access struct rx_ring
Let all the code use a pointer called rx_ring to access struct rx_ring members. Signed-off-by: ZHAO Gang <gamerh2o@gmail.com> Acked-by: Mark Einon <mark.einon@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -813,20 +813,21 @@ static void et131x_rx_dma_enable(struct et131x_adapter *adapter)
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{
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/* Setup the receive dma configuration register for normal operation */
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u32 csr = ET_RXDMA_CSR_FBR1_ENABLE;
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struct rx_ring *rx_ring = &adapter->rx_ring;
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if (adapter->rx_ring.fbr[1]->buffsize == 4096)
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if (rx_ring->fbr[1]->buffsize == 4096)
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csr |= ET_RXDMA_CSR_FBR1_SIZE_LO;
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else if (adapter->rx_ring.fbr[1]->buffsize == 8192)
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else if (rx_ring->fbr[1]->buffsize == 8192)
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csr |= ET_RXDMA_CSR_FBR1_SIZE_HI;
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else if (adapter->rx_ring.fbr[1]->buffsize == 16384)
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else if (rx_ring->fbr[1]->buffsize == 16384)
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csr |= ET_RXDMA_CSR_FBR1_SIZE_LO | ET_RXDMA_CSR_FBR1_SIZE_HI;
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csr |= ET_RXDMA_CSR_FBR0_ENABLE;
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if (adapter->rx_ring.fbr[0]->buffsize == 256)
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if (rx_ring->fbr[0]->buffsize == 256)
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csr |= ET_RXDMA_CSR_FBR0_SIZE_LO;
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else if (adapter->rx_ring.fbr[0]->buffsize == 512)
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else if (rx_ring->fbr[0]->buffsize == 512)
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csr |= ET_RXDMA_CSR_FBR0_SIZE_HI;
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else if (adapter->rx_ring.fbr[0]->buffsize == 1024)
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else if (rx_ring->fbr[0]->buffsize == 1024)
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csr |= ET_RXDMA_CSR_FBR0_SIZE_LO | ET_RXDMA_CSR_FBR0_SIZE_HI;
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writel(csr, &adapter->regs->rxdma.csr);
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@ -2126,12 +2127,9 @@ static int et131x_rx_dma_memory_alloc(struct et131x_adapter *adapter)
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u32 bufsize;
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u32 pktstat_ringsize;
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u32 fbr_chunksize;
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struct rx_ring *rx_ring;
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struct rx_ring *rx_ring = &adapter->rx_ring;
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struct fbr_lookup *fbr;
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/* Setup some convenience pointers */
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rx_ring = &adapter->rx_ring;
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/* Alloc memory for the lookup table */
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rx_ring->fbr[0] = kmalloc(sizeof(struct fbr_lookup), GFP_KERNEL);
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rx_ring->fbr[1] = kmalloc(sizeof(struct fbr_lookup), GFP_KERNEL);
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@ -2280,12 +2278,9 @@ static void et131x_rx_dma_memory_free(struct et131x_adapter *adapter)
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u32 bufsize;
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u32 pktstat_ringsize;
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struct rfd *rfd;
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struct rx_ring *rx_ring;
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struct rx_ring *rx_ring = &adapter->rx_ring;
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struct fbr_lookup *fbr;
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/* Setup some convenience pointers */
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rx_ring = &adapter->rx_ring;
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/* Free RFDs and associated packet descriptors */
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WARN_ON(rx_ring->num_ready_recv != rx_ring->num_rfd);
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@ -2334,7 +2329,7 @@ static void et131x_rx_dma_memory_free(struct et131x_adapter *adapter)
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/* Free Packet Status Ring */
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if (rx_ring->ps_ring_virtaddr) {
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pktstat_ringsize = sizeof(struct pkt_stat_desc) *
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adapter->rx_ring.psr_num_entries;
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rx_ring->psr_num_entries;
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dma_free_coherent(&adapter->pdev->dev, pktstat_ringsize,
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rx_ring->ps_ring_virtaddr,
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@ -2364,10 +2359,7 @@ static int et131x_init_recv(struct et131x_adapter *adapter)
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{
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struct rfd *rfd;
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u32 rfdct;
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struct rx_ring *rx_ring;
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/* Setup some convenience pointers */
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rx_ring = &adapter->rx_ring;
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struct rx_ring *rx_ring = &adapter->rx_ring;
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/* Setup each RFD */
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for (rfdct = 0; rfdct < rx_ring->num_rfd; rfdct++) {
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@ -2650,11 +2642,12 @@ static void et131x_handle_recv_interrupt(struct et131x_adapter *adapter)
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struct rfd *rfd = NULL;
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u32 count = 0;
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bool done = true;
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struct rx_ring *rx_ring = &adapter->rx_ring;
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/* Process up to available RFD's */
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while (count < NUM_PACKETS_HANDLED) {
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if (list_empty(&adapter->rx_ring.recv_list)) {
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WARN_ON(adapter->rx_ring.num_ready_recv != 0);
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if (list_empty(&rx_ring->recv_list)) {
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WARN_ON(rx_ring->num_ready_recv != 0);
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done = false;
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break;
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}
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@ -2678,19 +2671,19 @@ static void et131x_handle_recv_interrupt(struct et131x_adapter *adapter)
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adapter->net_stats.rx_packets++;
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/* Set the status on the packet, either resources or success */
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if (adapter->rx_ring.num_ready_recv < RFD_LOW_WATER_MARK)
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if (rx_ring->num_ready_recv < RFD_LOW_WATER_MARK)
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dev_warn(&adapter->pdev->dev, "RFD's are running out\n");
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count++;
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}
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if (count == NUM_PACKETS_HANDLED || !done) {
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adapter->rx_ring.unfinished_receives = true;
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rx_ring->unfinished_receives = true;
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writel(PARM_TX_TIME_INT_DEF * NANO_IN_A_MICRO,
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&adapter->regs->global.watchdog_timer);
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} else
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/* Watchdog timer will disable itself if appropriate. */
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adapter->rx_ring.unfinished_receives = false;
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rx_ring->unfinished_receives = false;
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}
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/* et131x_tx_dma_memory_alloc
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@ -3878,7 +3871,8 @@ static irqreturn_t et131x_isr(int irq, void *dev_id)
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{
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bool handled = true;
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struct net_device *netdev = (struct net_device *)dev_id;
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struct et131x_adapter *adapter = NULL;
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struct et131x_adapter *adapter = netdev_priv(netdev);
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struct rx_ring *rx_ring = &adapter->rx_ring;
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u32 status;
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if (!netif_device_present(netdev)) {
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@ -3886,8 +3880,6 @@ static irqreturn_t et131x_isr(int irq, void *dev_id)
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goto out;
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}
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adapter = netdev_priv(netdev);
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/* If the adapter is in low power state, then it should not
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* recognize any interrupt
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*/
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@ -3923,7 +3915,7 @@ static irqreturn_t et131x_isr(int irq, void *dev_id)
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if (++tcb->stale > 1)
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status |= ET_INTR_TXDMA_ISR;
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if (adapter->rx_ring.unfinished_receives)
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if (rx_ring->unfinished_receives)
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status |= ET_INTR_RXDMA_XFR_DONE;
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else if (tcb == NULL)
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writel(0, &adapter->regs->global.watchdog_timer);
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