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path: root/drivers/net/davinci_emac.c
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Diffstat (limited to 'drivers/net/davinci_emac.c')
-rw-r--r--drivers/net/davinci_emac.c143
1 files changed, 85 insertions, 58 deletions
diff --git a/drivers/net/davinci_emac.c b/drivers/net/davinci_emac.c
index 33c4fe26178c..2b8edd2efbf6 100644
--- a/drivers/net/davinci_emac.c
+++ b/drivers/net/davinci_emac.c
@@ -29,10 +29,6 @@
* 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>
@@ -62,12 +58,11 @@
#include <linux/bitops.h>
#include <linux/io.h>
#include <linux/uaccess.h>
+#include <linux/davinci_emac.h>
#include <asm/irq.h>
#include <asm/page.h>
-#include <mach/emac.h>
-
static int debug_level;
module_param(debug_level, int, 0);
MODULE_PARM_DESC(debug_level, "DaVinci EMAC debug level (NETIF_MSG bits)");
@@ -465,6 +460,7 @@ struct emac_priv {
void __iomem *ctrl_base;
void __iomem *emac_ctrl_ram;
u32 ctrl_ram_size;
+ u32 hw_ram_addr;
struct emac_txch *txch[EMAC_DEF_MAX_TX_CH];
struct emac_rxch *rxch[EMAC_DEF_MAX_RX_CH];
u32 link; /* 1=link on, 0=link off */
@@ -488,6 +484,9 @@ struct emac_priv {
struct mii_bus *mii_bus;
struct phy_device *phydev;
spinlock_t lock;
+ /*platform specific members*/
+ void (*int_enable) (void);
+ void (*int_disable) (void);
};
/* clock frequency for EMAC */
@@ -495,20 +494,12 @@ static struct clk *emac_clk;
static unsigned long emac_bus_frequency;
static unsigned long mdio_max_freq;
-/* EMAC internal utility function */
-static inline u32 emac_virt_to_phys(void __iomem *addr)
-{
- return (u32 __force) io_v2p(addr);
-}
+#define emac_virt_to_phys(addr, priv) \
+ (((u32 __force)(addr) - (u32 __force)(priv->emac_ctrl_ram)) \
+ + priv->hw_ram_addr)
/* 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)
@@ -956,19 +947,18 @@ static void emac_dev_mcast_set(struct net_device *ndev)
} else {
mbp_enable = (mbp_enable & ~EMAC_MBP_RXPROMISC);
if ((ndev->flags & IFF_ALLMULTI) ||
- (ndev->mc_count > EMAC_DEF_MAX_MULTICAST_ADDRESSES)) {
+ netdev_mc_count(ndev) > EMAC_DEF_MAX_MULTICAST_ADDRESSES) {
mbp_enable = (mbp_enable | EMAC_MBP_RXMCAST);
emac_add_mcast(priv, EMAC_ALL_MULTI_SET, NULL);
}
- if (ndev->mc_count > 0) {
+ if (!netdev_mc_empty(ndev)) {
struct dev_mc_list *mc_ptr;
mbp_enable = (mbp_enable | EMAC_MBP_RXMCAST);
emac_add_mcast(priv, EMAC_ALL_MULTI_CLR, NULL);
/* program multicast address list into EMAC hardware */
- for (mc_ptr = ndev->mc_list; mc_ptr;
- mc_ptr = mc_ptr->next) {
+ netdev_for_each_mc_addr(mc_ptr, ndev) {
emac_add_mcast(priv, EMAC_MULTICAST_ADD,
- (u8 *)mc_ptr->dmi_addr);
+ (u8 *) mc_ptr->dmi_addr);
}
} else {
mbp_enable = (mbp_enable & ~EMAC_MBP_RXMCAST);
@@ -1002,6 +992,8 @@ static void emac_int_disable(struct emac_priv *priv)
emac_ctrl_write(EMAC_DM646X_CMRXINTEN, 0x0);
emac_ctrl_write(EMAC_DM646X_CMTXINTEN, 0x0);
/* NOTE: Rx Threshold and Misc interrupts are not disabled */
+ if (priv->int_disable)
+ priv->int_disable();
local_irq_restore(flags);
@@ -1021,6 +1013,9 @@ static void emac_int_disable(struct emac_priv *priv)
static void emac_int_enable(struct emac_priv *priv)
{
if (priv->version == EMAC_VERSION_2) {
+ if (priv->int_enable)
+ priv->int_enable();
+
emac_ctrl_write(EMAC_DM646X_CMRXINTEN, 0xff);
emac_ctrl_write(EMAC_DM646X_CMTXINTEN, 0xff);
@@ -1230,6 +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)
@@ -1302,7 +1301,7 @@ static int emac_tx_bdproc(struct emac_priv *priv, u32 ch, u32 budget)
curr_bd = txch->active_queue_head;
if (NULL == curr_bd) {
emac_write(EMAC_TXCP(ch),
- emac_virt_to_phys(txch->last_hw_bdprocessed));
+ emac_virt_to_phys(txch->last_hw_bdprocessed, priv));
txch->no_active_pkts++;
spin_unlock_irqrestore(&priv->tx_lock, flags);
return 0;
@@ -1312,7 +1311,7 @@ static int emac_tx_bdproc(struct emac_priv *priv, u32 ch, u32 budget)
while ((curr_bd) &&
((frame_status & EMAC_CPPI_OWNERSHIP_BIT) == 0) &&
(pkts_processed < budget)) {
- emac_write(EMAC_TXCP(ch), emac_virt_to_phys(curr_bd));
+ emac_write(EMAC_TXCP(ch), emac_virt_to_phys(curr_bd, priv));
txch->active_queue_head = curr_bd->next;
if (frame_status & EMAC_CPPI_EOQ_BIT) {
if (curr_bd->next) { /* misqueued packet */
@@ -1322,6 +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;
@@ -1382,8 +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;
@@ -1399,7 +1403,7 @@ static int emac_send(struct emac_priv *priv, struct emac_netpktobj *pkt, u32 ch)
txch->active_queue_tail = curr_bd;
if (1 != txch->queue_active) {
emac_write(EMAC_TXHDP(ch),
- emac_virt_to_phys(curr_bd));
+ emac_virt_to_phys(curr_bd, priv));
txch->queue_active = 1;
}
++txch->queue_reinit;
@@ -1411,10 +1415,11 @@ static int emac_send(struct emac_priv *priv, struct emac_netpktobj *pkt, u32 ch)
tail_bd->next = curr_bd;
txch->active_queue_tail = curr_bd;
tail_bd = EMAC_VIRT_NOCACHE(tail_bd);
- tail_bd->h_next = (int)emac_virt_to_phys(curr_bd);
+ tail_bd->h_next = (int)emac_virt_to_phys(curr_bd, priv);
frame_status = tail_bd->mode;
if (frame_status & EMAC_CPPI_EOQ_BIT) {
- emac_write(EMAC_TXHDP(ch), emac_virt_to_phys(curr_bd));
+ emac_write(EMAC_TXHDP(ch),
+ emac_virt_to_phys(curr_bd, priv));
frame_status &= ~(EMAC_CPPI_EOQ_BIT);
tail_bd->mode = frame_status;
++txch->end_of_queue_add;
@@ -1462,7 +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)) {
@@ -1537,7 +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;
}
@@ -1604,9 +1607,10 @@ 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);
- /* FIXME buff_ptr = dma_map_single(... data_ptr ...) */
- curr_bd->buff_ptr = virt_to_phys(curr_bd->data_ptr);
+ curr_bd->h_next = emac_virt_to_phys(rxch->active_queue_head,
+ priv);
+ 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;
@@ -1690,6 +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);
}
@@ -1864,8 +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;
@@ -1879,7 +1889,7 @@ static void emac_addbd_to_rx_queue(struct emac_priv *priv, u32 ch,
rxch->active_queue_tail = curr_bd;
if (0 != rxch->queue_active) {
emac_write(EMAC_RXHDP(ch),
- emac_virt_to_phys(rxch->active_queue_head));
+ emac_virt_to_phys(rxch->active_queue_head, priv));
rxch->queue_active = 1;
}
} else {
@@ -1890,11 +1900,11 @@ static void emac_addbd_to_rx_queue(struct emac_priv *priv, u32 ch,
rxch->active_queue_tail = curr_bd;
tail_bd->next = curr_bd;
tail_bd = EMAC_VIRT_NOCACHE(tail_bd);
- tail_bd->h_next = emac_virt_to_phys(curr_bd);
+ tail_bd->h_next = emac_virt_to_phys(curr_bd, priv);
frame_status = tail_bd->mode;
if (frame_status & EMAC_CPPI_EOQ_BIT) {
emac_write(EMAC_RXHDP(ch),
- emac_virt_to_phys(curr_bd));
+ emac_virt_to_phys(curr_bd, priv));
frame_status &= ~(EMAC_CPPI_EOQ_BIT);
tail_bd->mode = frame_status;
++rxch->end_of_queue_add;
@@ -1920,7 +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;
@@ -1983,11 +1992,16 @@ 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 =
(frame_status & EMAC_RX_BD_PKT_LENGTH_MASK);
- emac_write(EMAC_RXCP(ch), emac_virt_to_phys(curr_bd));
+ emac_write(EMAC_RXCP(ch), emac_virt_to_phys(curr_bd, priv));
++rxch->processed_bd;
last_bd = curr_bd;
curr_bd = last_bd->next;
@@ -1998,7 +2012,7 @@ static int emac_rx_bdproc(struct emac_priv *priv, u32 ch, u32 budget)
if (curr_bd) {
++rxch->mis_queued_packets;
emac_write(EMAC_RXHDP(ch),
- emac_virt_to_phys(curr_bd));
+ emac_virt_to_phys(curr_bd, priv));
} else {
++rxch->end_of_queue;
rxch->queue_active = 0;
@@ -2099,7 +2113,7 @@ static int emac_hw_enable(struct emac_priv *priv)
emac_write(EMAC_RXINTMASKSET, BIT(ch));
rxch->queue_active = 1;
emac_write(EMAC_RXHDP(ch),
- emac_virt_to_phys(rxch->active_queue_head));
+ emac_virt_to_phys(rxch->active_queue_head, priv));
}
/* Enable MII */
@@ -2378,7 +2392,7 @@ static int emac_dev_open(struct net_device *ndev)
struct emac_priv *priv = netdev_priv(ndev);
netif_carrier_off(ndev);
- for (cnt = 0; cnt <= ETH_ALEN; cnt++)
+ for (cnt = 0; cnt < ETH_ALEN; cnt++)
ndev->dev_addr[cnt] = priv->mac_addr[cnt];
/* Configuration items */
@@ -2651,7 +2665,7 @@ static int __devinit davinci_emac_probe(struct platform_device *pdev)
pdata = pdev->dev.platform_data;
if (!pdata) {
- printk(KERN_ERR "DaVinci EMAC: No platfrom data\n");
+ printk(KERN_ERR "DaVinci EMAC: No platform data\n");
return -ENODEV;
}
@@ -2660,6 +2674,9 @@ static int __devinit davinci_emac_probe(struct platform_device *pdev)
priv->phy_mask = pdata->phy_mask;
priv->rmii_en = pdata->rmii_en;
priv->version = pdata->version;
+ priv->int_enable = pdata->interrupt_enable;
+ priv->int_disable = pdata->interrupt_disable;
+
emac_dev = &ndev->dev;
/* Get EMAC platform data */
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
@@ -2672,8 +2689,7 @@ static int __devinit davinci_emac_probe(struct platform_device *pdev)
priv->emac_base_phys = res->start + pdata->ctrl_reg_offset;
size = res->end - res->start + 1;
if (!request_mem_region(res->start, size, ndev->name)) {
- dev_err(emac_dev, "DaVinci EMAC: failed request_mem_region() \
- for regs\n");
+ dev_err(emac_dev, "DaVinci EMAC: failed request_mem_region() for regs\n");
rc = -ENXIO;
goto probe_quit;
}
@@ -2692,6 +2708,12 @@ static int __devinit davinci_emac_probe(struct platform_device *pdev)
priv->ctrl_ram_size = pdata->ctrl_ram_size;
priv->emac_ctrl_ram = priv->remap_addr + pdata->ctrl_ram_offset;
+ if (pdata->hw_ram_addr)
+ priv->hw_ram_addr = pdata->hw_ram_addr;
+ else
+ priv->hw_ram_addr = (u32 __force)res->start +
+ pdata->ctrl_ram_offset;
+
res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
if (!res) {
dev_err(emac_dev, "DaVinci EMAC: Error getting irq res\n");
@@ -2805,31 +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
*/
@@ -2837,11 +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,
};
/**
generated by cgit v1.2.3 (git 2.0.4) at 2024-09-20 05:43:57 +0000