#include <linux/kernel.h>
#include <linux/phy.h>
#include <linux/platform_device.h>
+#include <linux/platform_data/cns3xxx.h>
#include <linux/skbuff.h>
-#include <mach/irqs.h>
-#include <mach/platform.h>
#define DRV_NAME "cns3xxx_eth"
#define FIRST_SEGMENT 0x20000000
#define LAST_SEGMENT 0x10000000
#define FORCE_ROUTE 0x04000000
-#define IP_CHECKSUM 0x00040000
#define UDP_CHECKSUM 0x00020000
#define TCP_CHECKSUM 0x00010000
};
struct sw {
- struct resource *mem_res;
struct switch_regs __iomem *regs;
struct napi_struct napi;
struct cns3xxx_plat_info *plat;
struct _rx_ring rx_ring;
struct sk_buff *frag_first;
struct sk_buff *frag_last;
+ struct device *dev;
+ int rx_irq;
+ int stat_irq;
};
struct port {
struct mii_bus *mdio_bus;
static int ports_open;
static struct port *switch_port_tab[4];
-static struct dma_pool *rx_dma_pool;
-static struct dma_pool *tx_dma_pool;
struct net_device *napi_dev;
static int cns3xxx_mdio_cmd(struct mii_bus *bus, int phy_id, int location,
return ret;
}
-static int cns3xxx_mdio_register(void)
+static int cns3xxx_mdio_register(void __iomem *base)
{
int err;
if (!(mdio_bus = mdiobus_alloc()))
return -ENOMEM;
- mdio_regs = (struct switch_regs __iomem *)CNS3XXX_SWITCH_BASE_VIRT;
+ mdio_regs = base;
spin_lock_init(&mdio_lock);
mdio_bus->name = "CNS3xxx MII Bus";
if (unlikely(!napi_schedule_prep(&sw->napi)))
return;
- disable_irq_nosync(IRQ_CNS3XXX_SW_R0RXC);
+ disable_irq_nosync(sw->rx_irq);
__napi_schedule(&sw->napi);
}
unsigned int phys;
for (received += rx_ring->alloc_count; received > 0; received--) {
- buf = kmalloc(RX_SEGMENT_ALLOC_SIZE, GFP_ATOMIC);
+ buf = napi_alloc_frag(RX_SEGMENT_ALLOC_SIZE);
if (!buf)
break;
- phys = dma_map_single(NULL, buf + SKB_HEAD_ALIGN,
+ phys = dma_map_single(sw->dev, buf + SKB_HEAD_ALIGN,
RX_SEGMENT_MRU, DMA_FROM_DEVICE);
- if (dma_mapping_error(NULL, phys)) {
- kfree(buf);
+ if (dma_mapping_error(sw->dev, phys)) {
+ skb_free_frag(buf);
break;
}
tx_ring->buff_tab[index] = 0;
if (skb)
dev_kfree_skb_any(skb);
- dma_unmap_single(NULL, tx_ring->phys_tab[index],
+ dma_unmap_single(sw->dev, tx_ring->phys_tab[index],
desc->sdl, DMA_TO_DEVICE);
if (++index == TX_DESCS) {
index = 0;
break;
/* process received frame */
- dma_unmap_single(NULL, rx_ring->phys_tab[i],
+ dma_unmap_single(sw->dev, rx_ring->phys_tab[i],
RX_SEGMENT_MRU, DMA_FROM_DEVICE);
- skb = build_skb(rx_ring->buff_tab[i], 0);
+ skb = build_skb(rx_ring->buff_tab[i], RX_SEGMENT_ALLOC_SIZE);
if (!skb)
break;
sw->frag_first = skb;
else {
if (sw->frag_first == sw->frag_last)
- skb_frag_add_head(sw->frag_first, skb);
+ skb_shinfo(sw->frag_first)->frag_list = skb;
else
sw->frag_last->next = skb;
sw->frag_first->len += skb->len;
}
}
+ rx_ring->cur_index = i;
if (!received) {
napi_complete(napi);
- enable_irq(IRQ_CNS3XXX_SW_R0RXC);
+ enable_irq(sw->rx_irq);
+ budget = 0;
+
+ /* If 1 or more frames came in during IRQ enable, re-schedule */
+ if (rx_ring->desc[i].cown)
+ eth_schedule_poll(sw);
}
spin_lock_bh(&tx_lock);
cns3xxx_alloc_rx_buf(sw, received);
- rx_ring->cur_index = i;
-
wmb();
enable_rx_dma(sw);
- return received;
+ return budget;
}
-static void eth_set_desc(struct _tx_ring *tx_ring, int index, int index_last,
- void *data, int len, u32 config0, u32 pmap)
+static void eth_set_desc(struct sw *sw, struct _tx_ring *tx_ring, int index,
+ int index_last, void *data, int len, u32 config0,
+ u32 pmap)
{
struct tx_desc *tx_desc = &(tx_ring)->desc[index];
unsigned int phys;
- phys = dma_map_single(NULL, data, len, DMA_TO_DEVICE);
+ phys = dma_map_single(sw->dev, data, len, DMA_TO_DEVICE);
tx_desc->sdp = phys;
tx_desc->pmap = pmap;
tx_ring->phys_tab[index] = phys;
frag = &skb_shinfo(skb)->frags[i];
addr = page_address(skb_frag_page(frag)) + frag->page_offset;
- eth_set_desc(tx_ring, index, index_last, addr, frag->size,
+ eth_set_desc(sw, tx_ring, index, index_last, addr, frag->size,
config0, pmap);
}
index = (index + 1) % TX_DESCS;
len0 -= skb1->len;
- eth_set_desc(tx_ring, index, index_last, skb1->data, skb1->len,
- config0, pmap);
+ eth_set_desc(sw, tx_ring, index, index_last, skb1->data,
+ skb1->len, config0, pmap);
}
tx_ring->buff_tab[index0] = skb;
- eth_set_desc(tx_ring, index0, index_last, skb->data, len0,
+ eth_set_desc(sw, tx_ring, index0, index_last, skb->data, len0,
config0 | FIRST_SEGMENT, pmap);
wmb();
__raw_writel(QUEUE_THRESHOLD, &sw->regs->dma_ring_ctrl);
- if (!(rx_dma_pool = dma_pool_create(DRV_NAME, NULL,
- RX_POOL_ALLOC_SIZE, 32, 0)))
- return -ENOMEM;
-
- if (!(rx_ring->desc = dma_pool_alloc(rx_dma_pool, GFP_KERNEL,
- &rx_ring->phys_addr)))
+ rx_ring->desc = dmam_alloc_coherent(sw->dev, RX_POOL_ALLOC_SIZE,
+ &rx_ring->phys_addr, GFP_KERNEL);
+ if (!rx_ring->desc)
return -ENOMEM;
- memset(rx_ring->desc, 0, RX_POOL_ALLOC_SIZE);
/* Setup RX buffers */
+ memset(rx_ring->desc, 0, RX_POOL_ALLOC_SIZE);
for (i = 0; i < RX_DESCS; i++) {
struct rx_desc *desc = &(rx_ring)->desc[i];
void *buf;
- buf = kzalloc(RX_SEGMENT_ALLOC_SIZE, GFP_KERNEL);
+ buf = netdev_alloc_frag(RX_SEGMENT_ALLOC_SIZE);
if (!buf)
return -ENOMEM;
desc->fsd = 1;
desc->lsd = 1;
- desc->sdp = dma_map_single(NULL, buf + SKB_HEAD_ALIGN,
+ desc->sdp = dma_map_single(sw->dev, buf + SKB_HEAD_ALIGN,
RX_SEGMENT_MRU, DMA_FROM_DEVICE);
- if (dma_mapping_error(NULL, desc->sdp))
+ if (dma_mapping_error(sw->dev, desc->sdp))
return -EIO;
rx_ring->buff_tab[i] = buf;
__raw_writel(rx_ring->phys_addr, &sw->regs->fs_desc_ptr0);
__raw_writel(rx_ring->phys_addr, &sw->regs->fs_desc_base_addr0);
- if (!(tx_dma_pool = dma_pool_create(DRV_NAME, NULL,
- TX_POOL_ALLOC_SIZE, 32, 0)))
+ tx_ring->desc = dmam_alloc_coherent(sw->dev, TX_POOL_ALLOC_SIZE,
+ &tx_ring->phys_addr, GFP_KERNEL);
+ if (!tx_ring->desc)
return -ENOMEM;
- if (!(tx_ring->desc = dma_pool_alloc(tx_dma_pool, GFP_KERNEL,
- &tx_ring->phys_addr)))
- return -ENOMEM;
- memset(tx_ring->desc, 0, TX_POOL_ALLOC_SIZE);
-
/* Setup TX buffers */
+ memset(tx_ring->desc, 0, TX_POOL_ALLOC_SIZE);
for (i = 0; i < TX_DESCS; i++) {
struct tx_desc *desc = &(tx_ring)->desc[i];
tx_ring->buff_tab[i] = 0;
static void destroy_rings(struct sw *sw)
{
int i;
- if (sw->rx_ring.desc) {
- for (i = 0; i < RX_DESCS; i++) {
- struct _rx_ring *rx_ring = &sw->rx_ring;
- struct rx_desc *desc = &(rx_ring)->desc[i];
- struct sk_buff *skb = sw->rx_ring.buff_tab[i];
-
- if (!skb)
- continue;
-
- dma_unmap_single(NULL, desc->sdp, RX_SEGMENT_MRU,
- DMA_FROM_DEVICE);
- dev_kfree_skb(skb);
- }
- dma_pool_free(rx_dma_pool, sw->rx_ring.desc, sw->rx_ring.phys_addr);
- dma_pool_destroy(rx_dma_pool);
- rx_dma_pool = 0;
- sw->rx_ring.desc = 0;
+
+ for (i = 0; i < RX_DESCS; i++) {
+ struct _rx_ring *rx_ring = &sw->rx_ring;
+ struct rx_desc *desc = &(rx_ring)->desc[i];
+ void *buf = sw->rx_ring.buff_tab[i];
+
+ if (!buf)
+ continue;
+
+ dma_unmap_single(sw->dev, desc->sdp, RX_SEGMENT_MRU,
+ DMA_FROM_DEVICE);
+ skb_free_frag(buf);
}
- if (sw->tx_ring.desc) {
- for (i = 0; i < TX_DESCS; i++) {
- struct _tx_ring *tx_ring = &sw->tx_ring;
- struct tx_desc *desc = &(tx_ring)->desc[i];
- struct sk_buff *skb = sw->tx_ring.buff_tab[i];
- if (skb) {
- dma_unmap_single(NULL, desc->sdp,
- skb->len, DMA_TO_DEVICE);
- dev_kfree_skb(skb);
- }
- }
- dma_pool_free(tx_dma_pool, sw->tx_ring.desc, sw->tx_ring.phys_addr);
- dma_pool_destroy(tx_dma_pool);
- tx_dma_pool = 0;
- sw->tx_ring.desc = 0;
+
+ for (i = 0; i < TX_DESCS; i++) {
+ struct _tx_ring *tx_ring = &sw->tx_ring;
+ struct tx_desc *desc = &(tx_ring)->desc[i];
+ struct sk_buff *skb = sw->tx_ring.buff_tab[i];
+
+ if (!skb)
+ continue;
+
+ dma_unmap_single(sw->dev, desc->sdp, skb->len, DMA_TO_DEVICE);
+ dev_kfree_skb(skb);
}
}
netif_start_queue(dev);
if (!ports_open) {
- request_irq(IRQ_CNS3XXX_SW_R0RXC, eth_rx_irq, IRQF_SHARED, "gig_switch", napi_dev);
- request_irq(IRQ_CNS3XXX_SW_STATUS, eth_stat_irq, IRQF_SHARED, "gig_stat", napi_dev);
+ request_irq(sw->rx_irq, eth_rx_irq, IRQF_SHARED, "gig_switch", napi_dev);
+ request_irq(sw->stat_irq, eth_stat_irq, IRQF_SHARED, "gig_stat", napi_dev);
napi_enable(&sw->napi);
netif_start_queue(napi_dev);
phy_stop(port->phydev);
if (!ports_open) {
- disable_irq(IRQ_CNS3XXX_SW_R0RXC);
- free_irq(IRQ_CNS3XXX_SW_R0RXC, napi_dev);
- disable_irq(IRQ_CNS3XXX_SW_STATUS);
- free_irq(IRQ_CNS3XXX_SW_STATUS, napi_dev);
+ disable_irq(sw->rx_irq);
+ free_irq(sw->rx_irq, napi_dev);
+ disable_irq(sw->stat_irq);
+ free_irq(sw->stat_irq, napi_dev);
napi_disable(&sw->napi);
netif_stop_queue(napi_dev);
temp = __raw_readl(&sw->regs->mac_cfg[2]);
struct sw *sw;
struct net_device *dev;
struct cns3xxx_plat_info *plat = pdev->dev.platform_data;
- u32 regs_phys;
char phy_id[MII_BUS_ID_SIZE + 3];
int err;
u32 temp;
+ struct resource *res;
+ void __iomem *regs;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ regs = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(regs))
+ return PTR_ERR(regs);
+
+ err = cns3xxx_mdio_register(regs);
+ if (err)
+ return err;
+
+ if (!(napi_dev = alloc_etherdev(sizeof(struct sw)))) {
+ err = -ENOMEM;
+ goto err_remove_mdio;
+ }
- if (!(napi_dev = alloc_etherdev(sizeof(struct sw))))
- return -ENOMEM;
strcpy(napi_dev->name, "switch%d");
napi_dev->features = NETIF_F_IP_CSUM | NETIF_F_SG | NETIF_F_FRAGLIST;
SET_NETDEV_DEV(napi_dev, &pdev->dev);
sw = netdev_priv(napi_dev);
memset(sw, 0, sizeof(struct sw));
- sw->regs = (struct switch_regs __iomem *)CNS3XXX_SWITCH_BASE_VIRT;
- regs_phys = CNS3XXX_SWITCH_BASE;
- sw->mem_res = request_mem_region(regs_phys, REGS_SIZE, napi_dev->name);
- if (!sw->mem_res) {
- err = -EBUSY;
- goto err_free;
- }
+ sw->regs = regs;
+ sw->dev = &pdev->dev;
+
+ sw->rx_irq = platform_get_irq_byname(pdev, "eth_rx");
+ sw->stat_irq = platform_get_irq_byname(pdev, "eth_stat");
temp = __raw_readl(&sw->regs->phy_auto_addr);
temp |= (3 << 30); /* maximum frame length: 9600 bytes */
CRC_STRIPPING, &sw->regs->mac_glob_cfg);
if ((err = init_rings(sw)) != 0) {
- destroy_rings(sw);
err = -ENOMEM;
goto err_free;
}
temp |= (PORT_DISABLE | PORT_BLOCK_STATE | PORT_LEARN_DIS);
__raw_writel(temp, &sw->regs->mac_cfg[port->id]);
+ SET_NETDEV_DEV(dev, &pdev->dev);
dev->netdev_ops = &cns3xxx_netdev_ops;
dev->ethtool_ops = &cns3xxx_ethtool_ops;
dev->tx_queue_len = 1000;
memcpy(dev->dev_addr, &plat->hwaddr[i], ETH_ALEN);
snprintf(phy_id, MII_BUS_ID_SIZE + 3, PHY_ID_FMT, "0", plat->phy[i]);
- port->phydev = phy_connect(dev, phy_id, &cns3xxx_adjust_link, 0,
+ port->phydev = phy_connect(dev, phy_id, &cns3xxx_adjust_link,
PHY_INTERFACE_MODE_RGMII);
if ((err = IS_ERR(port->phydev))) {
switch_port_tab[port->id] = 0;
}
err_free:
free_netdev(napi_dev);
+err_remove_mdio:
+ cns3xxx_mdio_remove();
return err;
}
struct net_device *dev = platform_get_drvdata(pdev);
struct sw *sw = netdev_priv(dev);
int i;
- destroy_rings(sw);
+ destroy_rings(sw);
for (i = 3; i >= 0; i--) {
if (switch_port_tab[i]) {
struct port *port = switch_port_tab[i];
}
}
- release_resource(sw->mem_res);
free_netdev(napi_dev);
+ cns3xxx_mdio_remove();
+
return 0;
}
static int __init eth_init_module(void)
{
- int err;
- if ((err = cns3xxx_mdio_register()))
- return err;
return platform_driver_register(&cns3xxx_eth_driver);
}
static void __exit eth_cleanup_module(void)
{
platform_driver_unregister(&cns3xxx_eth_driver);
- cns3xxx_mdio_remove();
}
module_init(eth_init_module);
projects / openwrt / openwrt.git / blobdiff