Merge branch 'master' of /home/davem/src/GIT/linux-2.6/
[sfrench/cifs-2.6.git] / drivers / net / davinci_emac.c
index 8bd086aee56dc02144ba68b4ab2d958a7783c5c8..2b8edd2efbf608994946f1a1cb9ae40f71938ae7 100644 (file)
  *     PHY layer usage
  */
 
-/** Pending Items in this driver:
- * 1. Use Linux cache infrastcture for DMA'ed memory (dma_xxx functions)
- */
-
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/sched.h>
@@ -504,12 +500,6 @@ static unsigned long mdio_max_freq;
 
 /* Cache macros - Packet buffers would be from skb pool which is cached */
 #define EMAC_VIRT_NOCACHE(addr) (addr)
-#define EMAC_CACHE_INVALIDATE(addr, size) \
-       dma_cache_maint((void *)addr, size, DMA_FROM_DEVICE)
-#define EMAC_CACHE_WRITEBACK(addr, size) \
-       dma_cache_maint((void *)addr, size, DMA_TO_DEVICE)
-#define EMAC_CACHE_WRITEBACK_INVALIDATE(addr, size) \
-       dma_cache_maint((void *)addr, size, DMA_BIDIRECTIONAL)
 
 /* DM644x does not have BD's in cached memory - so no cache functions */
 #define BD_CACHE_INVALIDATE(addr, size)
@@ -1235,6 +1225,10 @@ static void emac_txch_teardown(struct emac_priv *priv, u32 ch)
        if (1 == txch->queue_active) {
                curr_bd = txch->active_queue_head;
                while (curr_bd != NULL) {
+                       dma_unmap_single(emac_dev, curr_bd->buff_ptr,
+                               curr_bd->off_b_len & EMAC_RX_BD_BUF_SIZE,
+                               DMA_TO_DEVICE);
+
                        emac_net_tx_complete(priv, (void __force *)
                                        &curr_bd->buf_token, 1, ch);
                        if (curr_bd != txch->active_queue_tail)
@@ -1327,6 +1321,11 @@ static int emac_tx_bdproc(struct emac_priv *priv, u32 ch, u32 budget)
                                txch->queue_active = 0; /* end of queue */
                        }
                }
+
+               dma_unmap_single(emac_dev, curr_bd->buff_ptr,
+                               curr_bd->off_b_len & EMAC_RX_BD_BUF_SIZE,
+                               DMA_TO_DEVICE);
+
                *tx_complete_ptr = (u32) curr_bd->buf_token;
                ++tx_complete_ptr;
                ++tx_complete_cnt;
@@ -1387,8 +1386,8 @@ static int emac_send(struct emac_priv *priv, struct emac_netpktobj *pkt, u32 ch)
 
        txch->bd_pool_head = curr_bd->next;
        curr_bd->buf_token = buf_list->buf_token;
-       /* FIXME buff_ptr = dma_map_single(... data_ptr ...) */
-       curr_bd->buff_ptr = virt_to_phys(buf_list->data_ptr);
+       curr_bd->buff_ptr = dma_map_single(&priv->ndev->dev, buf_list->data_ptr,
+                       buf_list->length, DMA_TO_DEVICE);
        curr_bd->off_b_len = buf_list->length;
        curr_bd->h_next = 0;
        curr_bd->next = NULL;
@@ -1468,7 +1467,6 @@ static int emac_dev_xmit(struct sk_buff *skb, struct net_device *ndev)
        tx_buf.length = skb->len;
        tx_buf.buf_token = (void *)skb;
        tx_buf.data_ptr = skb->data;
-       EMAC_CACHE_WRITEBACK((unsigned long)skb->data, skb->len);
        ndev->trans_start = jiffies;
        ret_code = emac_send(priv, &tx_packet, EMAC_DEF_TX_CH);
        if (unlikely(ret_code != 0)) {
@@ -1543,7 +1541,6 @@ static void *emac_net_alloc_rx_buf(struct emac_priv *priv, int buf_size,
        p_skb->dev = ndev;
        skb_reserve(p_skb, NET_IP_ALIGN);
        *data_token = (void *) p_skb;
-       EMAC_CACHE_WRITEBACK_INVALIDATE((unsigned long)p_skb->data, buf_size);
        return p_skb->data;
 }
 
@@ -1612,8 +1609,8 @@ static int emac_init_rxch(struct emac_priv *priv, u32 ch, char *param)
                /* populate the hardware descriptor */
                curr_bd->h_next = emac_virt_to_phys(rxch->active_queue_head,
                                priv);
-               /* FIXME buff_ptr = dma_map_single(... data_ptr ...) */
-               curr_bd->buff_ptr = virt_to_phys(curr_bd->data_ptr);
+               curr_bd->buff_ptr = dma_map_single(emac_dev, curr_bd->data_ptr,
+                               rxch->buf_size, DMA_FROM_DEVICE);
                curr_bd->off_b_len = rxch->buf_size;
                curr_bd->mode = EMAC_CPPI_OWNERSHIP_BIT;
 
@@ -1697,6 +1694,12 @@ static void emac_cleanup_rxch(struct emac_priv *priv, u32 ch)
                curr_bd = rxch->active_queue_head;
                while (curr_bd) {
                        if (curr_bd->buf_token) {
+                               dma_unmap_single(&priv->ndev->dev,
+                                       curr_bd->buff_ptr,
+                                       curr_bd->off_b_len
+                                               & EMAC_RX_BD_BUF_SIZE,
+                                       DMA_FROM_DEVICE);
+
                                dev_kfree_skb_any((struct sk_buff *)\
                                                  curr_bd->buf_token);
                        }
@@ -1871,8 +1874,8 @@ static void emac_addbd_to_rx_queue(struct emac_priv *priv, u32 ch,
 
        /* populate the hardware descriptor */
        curr_bd->h_next = 0;
-       /* FIXME buff_ptr = dma_map_single(... buffer ...) */
-       curr_bd->buff_ptr = virt_to_phys(buffer);
+       curr_bd->buff_ptr = dma_map_single(&priv->ndev->dev, buffer,
+                               rxch->buf_size, DMA_FROM_DEVICE);
        curr_bd->off_b_len = rxch->buf_size;
        curr_bd->mode = EMAC_CPPI_OWNERSHIP_BIT;
        curr_bd->next = NULL;
@@ -1927,7 +1930,6 @@ static int emac_net_rx_cb(struct emac_priv *priv,
        p_skb = (struct sk_buff *)net_pkt_list->pkt_token;
        /* set length of packet */
        skb_put(p_skb, net_pkt_list->pkt_length);
-       EMAC_CACHE_INVALIDATE((unsigned long)p_skb->data, p_skb->len);
        p_skb->protocol = eth_type_trans(p_skb, priv->ndev);
        netif_receive_skb(p_skb);
        priv->net_dev_stats.rx_bytes += net_pkt_list->pkt_length;
@@ -1990,6 +1992,11 @@ static int emac_rx_bdproc(struct emac_priv *priv, u32 ch, u32 budget)
                rx_buf_obj->data_ptr = (char *)curr_bd->data_ptr;
                rx_buf_obj->length = curr_bd->off_b_len & EMAC_RX_BD_BUF_SIZE;
                rx_buf_obj->buf_token = curr_bd->buf_token;
+
+               dma_unmap_single(&priv->ndev->dev, curr_bd->buff_ptr,
+                               curr_bd->off_b_len & EMAC_RX_BD_BUF_SIZE,
+                               DMA_FROM_DEVICE);
+
                curr_pkt->pkt_token = curr_pkt->buf_list->buf_token;
                curr_pkt->num_bufs = 1;
                curr_pkt->pkt_length =
@@ -2820,31 +2827,37 @@ static int __devexit davinci_emac_remove(struct platform_device *pdev)
        return 0;
 }
 
-static
-int davinci_emac_suspend(struct platform_device *pdev, pm_message_t state)
+static int davinci_emac_suspend(struct device *dev)
 {
-       struct net_device *dev = platform_get_drvdata(pdev);
+       struct platform_device *pdev = to_platform_device(dev);
+       struct net_device *ndev = platform_get_drvdata(pdev);
 
-       if (netif_running(dev))
-               emac_dev_stop(dev);
+       if (netif_running(ndev))
+               emac_dev_stop(ndev);
 
        clk_disable(emac_clk);
 
        return 0;
 }
 
-static int davinci_emac_resume(struct platform_device *pdev)
+static int davinci_emac_resume(struct device *dev)
 {
-       struct net_device *dev = platform_get_drvdata(pdev);
+       struct platform_device *pdev = to_platform_device(dev);
+       struct net_device *ndev = platform_get_drvdata(pdev);
 
        clk_enable(emac_clk);
 
-       if (netif_running(dev))
-               emac_dev_open(dev);
+       if (netif_running(ndev))
+               emac_dev_open(ndev);
 
        return 0;
 }
 
+static const struct dev_pm_ops davinci_emac_pm_ops = {
+       .suspend        = davinci_emac_suspend,
+       .resume         = davinci_emac_resume,
+};
+
 /**
  * davinci_emac_driver: EMAC platform driver structure
  */
@@ -2852,11 +2865,10 @@ static struct platform_driver davinci_emac_driver = {
        .driver = {
                .name    = "davinci_emac",
                .owner   = THIS_MODULE,
+               .pm      = &davinci_emac_pm_ops,
        },
        .probe = davinci_emac_probe,
        .remove = __devexit_p(davinci_emac_remove),
-       .suspend = davinci_emac_suspend,
-       .resume = davinci_emac_resume,
 };
 
 /**