*/
/*
- * Timeline before release:
- * Stage 4: Basic feature support.
- * - Implement scatter-gather offloading.
- * Use pci_map_page on scattered sk_buff for HIGHMEM support
- * - Implement Power Managemt related functions.
- * - Implement Jumboframe.
- * - Implement MSI.
- *
- * Stage 5: Advanced offloading support.
- * - Implement VLAN offloading.
- * - Implement TCP Segement offloading.
- *
- * Stage 6: CPU Load balancing.
+ * TODO:
* - Implement MSI-X.
* Along with multiple RX queue, for CPU load balancing.
- *
- * Stage 7:
- * - Cleanup/re-orginize code, performence tuneing(alignment etc...).
- * - Test and Release 1.0
- *
- * Non-Critical:
- * - Use NAPI instead of rx_tasklet?
- * PCC Support Both Packet Counter and Timeout Interrupt for
- * receive and transmit complete, does NAPI really needed?
* - Decode register dump for ethtool.
*/
#include <linux/mii.h>
#include <linux/crc32.h>
#include <linux/delay.h>
+#include <linux/spinlock.h>
#include <linux/in.h>
#include <linux/ip.h>
+#include <linux/ipv6.h>
+#include <linux/tcp.h>
+#include <linux/udp.h>
+#include <linux/if_vlan.h>
#include "jme.h"
#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,21)
smi_reg_addr(reg));
wmb();
- for (i = JME_PHY_TIMEOUT; i > 0; --i) {
+ for (i = JME_PHY_TIMEOUT ; i > 0 ; --i) {
udelay(1);
- if (((val = jread32(jme, JME_SMI)) & SMI_OP_REQ) == 0)
+ val = jread32(jme, JME_SMI);
+ if ((val & SMI_OP_REQ) == 0)
break;
}
wmb();
for (i = JME_PHY_TIMEOUT ; i > 0 ; --i) {
udelay(1);
- if (((val = jread32(jme, JME_SMI)) & SMI_OP_REQ) == 0)
+ val = jread32(jme, JME_SMI);
+ if ((val & SMI_OP_REQ) == 0)
break;
}
return;
}
+static void
+jme_setup_wakeup_frame(struct jme_adapter *jme,
+ __u32 *mask, __u32 crc, int fnr)
+{
+ int i;
+
+ /*
+ * Setup CRC pattern
+ */
+ jwrite32(jme, JME_WFOI, WFOI_CRC_SEL | (fnr & WFOI_FRAME_SEL));
+ wmb();
+ jwrite32(jme, JME_WFODP, crc);
+ wmb();
+
+ /*
+ * Setup Mask
+ */
+ for(i = 0 ; i < WAKEUP_FRAME_MASK_DWNR ; ++i) {
+ jwrite32(jme, JME_WFOI,
+ ((i << WFOI_MASK_SHIFT) & WFOI_MASK_SEL) |
+ (fnr & WFOI_FRAME_SEL));
+ wmb();
+ jwrite32(jme, JME_WFODP, mask[i]);
+ wmb();
+ }
+}
__always_inline static void
jme_reset_mac_processor(struct jme_adapter *jme)
{
+ __u32 mask[WAKEUP_FRAME_MASK_DWNR] = {0,0,0,0};
+ __u32 crc = 0xCDCDCDCD;
+ int i;
+
jwrite32(jme, JME_GHC, jme->reg_ghc | GHC_SWRST);
udelay(2);
jwrite32(jme, JME_GHC, jme->reg_ghc);
jwrite32(jme, JME_RXMCHT_LO, 0x00000000);
jwrite32(jme, JME_RXMCHT_HI, 0x00000000);
- jwrite32(jme, JME_WFODP, 0);
- jwrite32(jme, JME_WFOI, 0);
+ for(i = 0 ; i < WAKEUP_FRAME_NR ; ++i)
+ jme_setup_wakeup_frame(jme, mask, crc, i);
jwrite32(jme, JME_GPREG0, GPREG0_DEFAULT);
jwrite32(jme, JME_GPREG1, 0);
}
__always_inline static void
jme_clear_pm(struct jme_adapter *jme)
{
- jwrite32(jme, JME_PMCS, 0xFFFF0000);
+ jwrite32(jme, JME_PMCS, 0xFFFF0000 | jme->reg_pmcs);
pci_set_power_state(jme->pdev, PCI_D0);
+ pci_enable_wake(jme->pdev, PCI_D0, false);
}
static int
jme_set_rx_pcc(struct jme_adapter *jme, int p)
{
switch(p) {
+ case PCC_OFF:
+ jwrite32(jme, JME_PCCRX0,
+ ((PCC_OFF_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) |
+ ((PCC_OFF_CNT << PCCRX_SHIFT) & PCCRX_MASK));
+ break;
case PCC_P1:
jwrite32(jme, JME_PCCRX0,
((PCC_P1_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) |
default:
break;
}
+ wmb();
- dprintk(jme->dev->name, "Switched to PCC_P%d\n", p);
+ if(!(jme->flags & JME_FLAG_POLL))
+ dprintk(jme->dev->name, "Switched to PCC_P%d\n", p);
}
static void
register struct dynpcc_info *dpi = &(jme->dpi);
jme_set_rx_pcc(jme, PCC_P1);
-
- dpi->check_point = jiffies + PCC_INTERVAL;
- dpi->last_bytes = NET_STAT(jme).rx_bytes;
- dpi->last_pkts = NET_STAT(jme).rx_packets;
dpi->cur = PCC_P1;
dpi->attempt = PCC_P1;
dpi->cnt = 0;
{
struct jme_adapter *jme = netdev_priv(netdev);
__u32 phylink, ghc, cnt = JME_SPDRSV_TIMEOUT, bmcr;
- char linkmsg[32];
+ char linkmsg[64];
int rc = 0;
+ linkmsg[0] = '\0';
phylink = jread32(jme, JME_PHY_LINK);
if (phylink & PHY_LINK_UP) {
jme->mii_if.phy_id,
MII_BMCR);
+
phylink |= ((bmcr & BMCR_SPEED1000) &&
(bmcr & BMCR_SPEED100) == 0) ?
PHY_LINK_SPEED_1000M :
phylink |= (bmcr & BMCR_FULLDPLX) ?
PHY_LINK_DUPLEX : 0;
+
+ strcat(linkmsg, "Forced: ");
}
else {
/*
if(!cnt)
jeprintk(netdev->name,
"Waiting speed resolve timeout.\n");
+
+ strcat(linkmsg, "ANed: ");
}
if(jme->phylink == phylink) {
switch(phylink & PHY_LINK_SPEED_MASK) {
case PHY_LINK_SPEED_10M:
ghc = GHC_SPEED_10M;
- strcpy(linkmsg, "10 Mbps, ");
+ strcat(linkmsg, "10 Mbps, ");
break;
case PHY_LINK_SPEED_100M:
ghc = GHC_SPEED_100M;
- strcpy(linkmsg, "100 Mbps, ");
+ strcat(linkmsg, "100 Mbps, ");
break;
case PHY_LINK_SPEED_1000M:
ghc = GHC_SPEED_1000M;
- strcpy(linkmsg, "1000 Mbps, ");
+ strcat(linkmsg, "1000 Mbps, ");
break;
default:
ghc = 0;
return rc;
}
-
-static int
-jme_alloc_txdesc(struct jme_adapter *jme,
- int nr_alloc)
-{
- struct jme_ring *txring = jme->txring;
- int idx;
-
- idx = txring->next_to_use;
-
- if(unlikely(txring->nr_free < nr_alloc))
- return -1;
-
- spin_lock(&jme->tx_lock);
- txring->nr_free -= nr_alloc;
-
- if((txring->next_to_use += nr_alloc) >= RING_DESC_NR)
- txring->next_to_use -= RING_DESC_NR;
- spin_unlock(&jme->tx_lock);
-
- return idx;
-}
-
-static int
-jme_set_new_txdesc(struct jme_adapter *jme,
- struct sk_buff *skb)
-{
- struct jme_ring *txring = jme->txring;
- volatile struct txdesc *txdesc = txring->desc, *ctxdesc;
- struct jme_buffer_info *txbi = txring->bufinf, *ctxbi;
- dma_addr_t dmaaddr;
- int i, idx, nr_desc;
- __u8 flags;
-
- nr_desc = 2;
- idx = jme_alloc_txdesc(jme, nr_desc);
-
- if(unlikely(idx<0))
- return NETDEV_TX_BUSY;
-
- for(i = 1 ; i < nr_desc ; ++i) {
- ctxdesc = txdesc + ((idx + i) & (RING_DESC_NR-1));
- ctxbi = txbi + ((idx + i) & (RING_DESC_NR-1));
-
- dmaaddr = pci_map_single(jme->pdev,
- skb->data,
- skb->len,
- PCI_DMA_TODEVICE);
-
- pci_dma_sync_single_for_device(jme->pdev,
- dmaaddr,
- skb->len,
- PCI_DMA_TODEVICE);
-
- ctxdesc->dw[0] = 0;
- ctxdesc->dw[1] = 0;
- ctxdesc->desc2.flags = TXFLAG_OWN;
- if(jme->dev->features & NETIF_F_HIGHDMA)
- ctxdesc->desc2.flags |= TXFLAG_64BIT;
- ctxdesc->desc2.datalen = cpu_to_le16(skb->len);
- ctxdesc->desc2.bufaddrh = cpu_to_le32((__u64)dmaaddr >> 32);
- ctxdesc->desc2.bufaddrl = cpu_to_le32(
- (__u64)dmaaddr & 0xFFFFFFFFUL);
-
- ctxbi->mapping = dmaaddr;
- ctxbi->len = skb->len;
- }
-
- ctxdesc = txdesc + idx;
- ctxbi = txbi + idx;
-
- ctxdesc->dw[0] = 0;
- ctxdesc->dw[1] = 0;
- ctxdesc->dw[2] = 0;
- ctxdesc->dw[3] = 0;
- ctxdesc->desc1.pktsize = cpu_to_le16(skb->len);
- /*
- * Set OWN bit at final.
- * When kernel transmit faster than NIC.
- * And NIC trying to send this descriptor before we tell
- * it to start sending this TX queue.
- * Other fields are already filled correctly.
- */
- wmb();
- flags = TXFLAG_OWN | TXFLAG_INT;
- if(skb->ip_summed == CHECKSUM_PARTIAL) {
- //flags |= TXFLAG_IPCS;
-
- switch(ip_hdr(skb)->protocol) {
- case IPPROTO_TCP:
- flags |= TXFLAG_TCPCS;
- break;
- case IPPROTO_UDP:
- flags |= TXFLAG_UDPCS;
- break;
- default:
- break;
- }
- }
- ctxdesc->desc1.flags = flags;
- /*
- * Set tx buffer info after telling NIC to send
- * For better tx_clean timing
- */
- wmb();
- ctxbi->nr_desc = nr_desc;
- ctxbi->skb = skb;
-
- tx_dbg(jme->dev->name, "Xmit: %d+%d\n", idx, nr_desc);
-
- return 0;
-}
-
-
static int
jme_setup_tx_resources(struct jme_adapter *jme)
{
struct jme_ring *txring = &(jme->txring[0]);
txring->alloc = dma_alloc_coherent(&(jme->pdev->dev),
- TX_RING_ALLOC_SIZE,
- &(txring->dmaalloc),
- GFP_ATOMIC);
+ TX_RING_ALLOC_SIZE(jme->tx_ring_size),
+ &(txring->dmaalloc),
+ GFP_ATOMIC);
if(!txring->alloc) {
txring->desc = NULL;
txring->dma = ALIGN(txring->dmaalloc, RING_DESC_ALIGN);
txring->next_to_use = 0;
txring->next_to_clean = 0;
- txring->nr_free = RING_DESC_NR;
+ atomic_set(&txring->nr_free, jme->tx_ring_size);
/*
- * Initiallize Transmit Descriptors
+ * Initialize Transmit Descriptors
*/
- memset(txring->alloc, 0, TX_RING_ALLOC_SIZE);
+ memset(txring->alloc, 0, TX_RING_ALLOC_SIZE(jme->tx_ring_size));
memset(txring->bufinf, 0,
- sizeof(struct jme_buffer_info) * RING_DESC_NR);
+ sizeof(struct jme_buffer_info) * jme->tx_ring_size);
return 0;
}
struct jme_buffer_info *txbi = txring->bufinf;
if(txring->alloc) {
- for(i = 0 ; i < RING_DESC_NR ; ++i) {
+ for(i = 0 ; i < jme->tx_ring_size ; ++i) {
txbi = txring->bufinf + i;
if(txbi->skb) {
dev_kfree_skb(txbi->skb);
}
dma_free_coherent(&(jme->pdev->dev),
- TX_RING_ALLOC_SIZE,
+ TX_RING_ALLOC_SIZE(jme->tx_ring_size),
txring->alloc,
txring->dmaalloc);
}
txring->next_to_use = 0;
txring->next_to_clean = 0;
- txring->nr_free = 0;
+ atomic_set(&txring->nr_free, 0);
}
/*
* Setup TX Descptor Count
*/
- jwrite32(jme, JME_TXQDC, RING_DESC_NR);
+ jwrite32(jme, JME_TXQDC, jme->tx_ring_size);
/*
* Enable TX Engine
}
+__always_inline static void
+jme_restart_tx_engine(struct jme_adapter *jme)
+{
+ /*
+ * Restart TX Engine
+ */
+ jwrite32(jme, JME_TXCS, jme->reg_txcs |
+ TXCS_SELECT_QUEUE0 |
+ TXCS_ENABLE);
+}
+
__always_inline static void
jme_disable_tx_engine(struct jme_adapter *jme)
{
jme_make_new_rx_buf(struct jme_adapter *jme, int i)
{
struct jme_ring *rxring = &(jme->rxring[0]);
- struct jme_buffer_info *rxbi = rxring->bufinf;
+ struct jme_buffer_info *rxbi = rxring->bufinf + i;
unsigned long offset;
struct sk_buff* skb;
- skb = netdev_alloc_skb(jme->dev, RX_BUF_ALLOC_SIZE);
+ skb = netdev_alloc_skb(jme->dev,
+ jme->dev->mtu + RX_EXTRA_LEN);
if(unlikely(!skb))
return -ENOMEM;
- if(unlikely(skb_is_nonlinear(skb))) {
- dprintk(jme->dev->name,
- "Allocated skb fragged(%d).\n",
- skb_shinfo(skb)->nr_frags);
- dev_kfree_skb(skb);
- return -ENOMEM;
- }
-
if(unlikely(offset =
(unsigned long)(skb->data)
- & (unsigned long)(RX_BUF_DMA_ALIGN - 1)))
+ & ((unsigned long)RX_BUF_DMA_ALIGN - 1)))
skb_reserve(skb, RX_BUF_DMA_ALIGN - offset);
- rxbi += i;
rxbi->skb = skb;
rxbi->len = skb_tailroom(skb);
- rxbi->mapping = pci_map_single(jme->pdev,
- skb->data,
- rxbi->len,
- PCI_DMA_FROMDEVICE);
+ rxbi->mapping = pci_map_page(jme->pdev,
+ virt_to_page(skb->data),
+ offset_in_page(skb->data),
+ rxbi->len,
+ PCI_DMA_FROMDEVICE);
return 0;
}
rxbi += i;
if(rxbi->skb) {
- pci_unmap_single(jme->pdev,
+ pci_unmap_page(jme->pdev,
rxbi->mapping,
rxbi->len,
PCI_DMA_FROMDEVICE);
struct jme_ring *rxring = &(jme->rxring[0]);
if(rxring->alloc) {
- for(i = 0 ; i < RING_DESC_NR ; ++i)
+ for(i = 0 ; i < jme->rx_ring_size ; ++i)
jme_free_rx_buf(jme, i);
dma_free_coherent(&(jme->pdev->dev),
- RX_RING_ALLOC_SIZE,
+ RX_RING_ALLOC_SIZE(jme->rx_ring_size),
rxring->alloc,
rxring->dmaalloc);
rxring->alloc = NULL;
struct jme_ring *rxring = &(jme->rxring[0]);
rxring->alloc = dma_alloc_coherent(&(jme->pdev->dev),
- RX_RING_ALLOC_SIZE,
- &(rxring->dmaalloc),
- GFP_ATOMIC);
+ RX_RING_ALLOC_SIZE(jme->rx_ring_size),
+ &(rxring->dmaalloc),
+ GFP_ATOMIC);
if(!rxring->alloc) {
rxring->desc = NULL;
rxring->dmaalloc = 0;
/*
* Initiallize Receive Descriptors
*/
- for(i = 0 ; i < RING_DESC_NR ; ++i) {
+ for(i = 0 ; i < jme->rx_ring_size ; ++i) {
if(unlikely(jme_make_new_rx_buf(jme, i))) {
jme_free_rx_resources(jme);
return -ENOMEM;
jwrite32(jme, JME_RXNDA, (__u64)jme->rxring[0].dma & 0xFFFFFFFFUL);
/*
- * Setup RX Descptor Count
+ * Setup RX Descriptor Count
*/
- jwrite32(jme, JME_RXQDC, RING_DESC_NR);
+ jwrite32(jme, JME_RXQDC, jme->rx_ring_size);
/*
* Setup Unicast Filter
* Enable RX Engine
*/
wmb();
- jwrite32(jme, JME_RXCS, RXCS_DEFAULT |
+ jwrite32(jme, JME_RXCS, jme->reg_rxcs |
RXCS_QUEUESEL_Q0 |
RXCS_ENABLE |
RXCS_QST);
/*
* Start RX Engine
*/
- jwrite32(jme, JME_RXCS, RXCS_DEFAULT |
+ jwrite32(jme, JME_RXCS, jme->reg_rxcs |
RXCS_QUEUESEL_Q0 |
RXCS_ENABLE |
RXCS_QST);
/*
* Disable RX Engine
*/
- val = jread32(jme, JME_RXCS);
- val &= ~RXCS_ENABLE;
- jwrite32(jme, JME_RXCS, val);
+ jwrite32(jme, JME_RXCS, jme->reg_rxcs);
val = jread32(jme, JME_RXCS);
for(i = JME_RX_DISABLE_TIMEOUT ; (val & RXCS_ENABLE) && i > 0 ; --i)
{
- mdelay(100);
+ mdelay(1);
val = jread32(jme, JME_RXCS);
}
}
-static void
-jme_attempt_pcc(struct dynpcc_info *dpi, int atmp)
-{
- if(dpi->attempt == atmp) {
- ++(dpi->cnt);
- }
- else {
- dpi->attempt = atmp;
- dpi->cnt = 0;
- }
-}
-
-static void
-jme_dynamic_pcc(struct jme_adapter *jme)
+static int
+jme_rxsum_ok(struct jme_adapter *jme, __u16 flags)
{
- register struct dynpcc_info *dpi = &(jme->dpi);
+ if(!(flags & (RXWBFLAG_TCPON | RXWBFLAG_UDPON | RXWBFLAG_IPV4)))
+ return false;
- if(jiffies >= dpi->check_point) {
- if(jiffies > (dpi->check_point + PCC_INTERVAL))
- jme_attempt_pcc(dpi, PCC_P1);
- else if((NET_STAT(jme).rx_bytes - dpi->last_bytes) >
- PCC_P3_THRESHOLD)
- jme_attempt_pcc(dpi, PCC_P3);
- else if((NET_STAT(jme).rx_bytes - dpi->last_bytes) >
- PCC_P2_THRESHOLD)
- jme_attempt_pcc(dpi, PCC_P2);
- else
- jme_attempt_pcc(dpi, PCC_P1);
+ if(unlikely((flags & RXWBFLAG_TCPON) &&
+ !(flags & RXWBFLAG_TCPCS))) {
+ csum_dbg(jme->dev->name, "TCP Checksum error.\n");
+ return false;
+ }
- if(unlikely(dpi->attempt != dpi->cur && dpi->cnt > 5)) {
- jme_set_rx_pcc(jme, dpi->attempt);
- dpi->cur = dpi->attempt;
- dpi->cnt = 0;
- }
+ if(unlikely((flags & RXWBFLAG_UDPON) &&
+ !(flags & RXWBFLAG_UDPCS))) {
+ csum_dbg(jme->dev->name, "UDP Checksum error.\n");
+ return false;
+ }
- dpi->last_bytes = NET_STAT(jme).rx_bytes;
- dpi->last_pkts = NET_STAT(jme).rx_packets;
- dpi->check_point = jiffies + PCC_INTERVAL;
+ if(unlikely((flags & RXWBFLAG_IPV4) &&
+ !(flags & RXWBFLAG_IPCS))) {
+ csum_dbg(jme->dev->name, "IPv4 Checksum error.\n");
+ return false;
}
+
+ return true;
}
static void
skb_put(skb, framesize);
skb->protocol = eth_type_trans(skb, jme->dev);
- if(jme->reg_rxmcs & RXMCS_CHECKSUM)
+ if(jme_rxsum_ok(jme, rxdesc->descwb.flags))
skb->ip_summed = CHECKSUM_UNNECESSARY;
+ else
+ skb->ip_summed = CHECKSUM_NONE;
+
+
+ if(rxdesc->descwb.flags & RXWBFLAG_TAGON) {
+ vlan_dbg(jme->dev->name, "VLAN: %04x\n",
+ rxdesc->descwb.vlan);
+ if(jme->vlgrp) {
+ vlan_dbg(jme->dev->name,
+ "VLAN Passed to kernel.\n");
+ vlan_hwaccel_rx(skb, jme->vlgrp,
+ le32_to_cpu(rxdesc->descwb.vlan));
+ NET_STAT(jme).rx_bytes += 4;
+ }
+ }
+ else {
+ netif_rx(skb);
+ }
- netif_rx(skb);
-
- if(le16_to_cpu(rxdesc->descwb.flags) & RXWBFLAG_DEST_MUL)
+ if((le16_to_cpu(rxdesc->descwb.flags) & RXWBFLAG_DEST) ==
+ RXWBFLAG_DEST_MUL)
++(NET_STAT(jme).multicast);
jme->dev->last_rx = jiffies;
jme_set_clean_rxdesc(jme, idx);
- jme_dynamic_pcc(jme);
-
}
-static int
-jme_rxsum_bad(struct jme_adapter *jme, __u16 flags)
-{
- if(jme->reg_rxmcs & RXMCS_CHECKSUM) {
- return ((flags & RXWBFLAG_IPV4) &&
- !(flags & RXWBFLAG_IPCS)) ||
- ((flags & RXWBFLAG_IPV6) &&
- !(flags & RXWBFLAG_IPCS)) ||
- ((flags & RXWBFLAG_TCPON) &&
- !(flags & RXWBFLAG_TCPCS)) ||
- ((flags & RXWBFLAG_UDPON) &&
- !(flags & RXWBFLAG_UDPCS));
- }
- else {
- return 0;
- }
-}
+
static int
jme_process_receive(struct jme_adapter *jme, int limit)
{
struct jme_ring *rxring = &(jme->rxring[0]);
volatile struct rxdesc *rxdesc = rxring->desc;
- int i, j, ccnt, desccnt;
+ int i, j, ccnt, desccnt, mask = jme->rx_ring_mask;
+
+ if(unlikely(!atomic_dec_and_test(&jme->rx_cleaning)))
+ goto out_inc;
+
+ if(unlikely(atomic_read(&jme->link_changing) != 1))
+ goto out_inc;
+
+ if(unlikely(!netif_carrier_ok(jme->dev)))
+ goto out_inc;
i = rxring->next_to_clean;
while( limit-- > 0 )
rx_dbg(jme->dev->name, "RX: Cleaning %d\n", i);
if(unlikely(desccnt > 1 ||
- rxdesc->descwb.errstat & RXWBERR_ALLERR ||
- jme_rxsum_bad(jme, rxdesc->descwb.flags))) {
+ rxdesc->descwb.errstat & RXWBERR_ALLERR)) {
if(rxdesc->descwb.errstat & RXWBERR_CRCERR)
++(NET_STAT(jme).rx_crc_errors);
else
++(NET_STAT(jme).rx_errors);
- if(desccnt > 1)
+ if(desccnt > 1) {
+ rx_dbg(jme->dev->name,
+ "RX: More than one(%d) descriptor, "
+ "framelen=%d\n",
+ desccnt, le16_to_cpu(rxdesc->descwb.framesize));
limit -= desccnt - 1;
+ }
for(j = i, ccnt = desccnt ; ccnt-- ; ) {
jme_set_clean_rxdesc(jme, j);
-
- if(unlikely(++j == RING_DESC_NR))
- j = 0;
+ j = (j + 1) & (mask);
}
}
jme_alloc_and_feed_skb(jme, i);
}
-
- if((i += desccnt) >= RING_DESC_NR)
- i -= RING_DESC_NR;
+ i = (i + desccnt) & (mask);
}
+
out:
rx_dbg(jme->dev->name, "RX: Stop at %d\n", i);
rx_dbg(jme->dev->name, "RX: RXNDA offset %d\n",
rxring->next_to_clean = i;
+out_inc:
+ atomic_inc(&jme->rx_cleaning);
+
return limit > 0 ? limit : 0;
}
+static void
+jme_attempt_pcc(struct dynpcc_info *dpi, int atmp)
+{
+ if(likely(atmp == dpi->cur)) {
+ dpi->cnt = 0;
+ return;
+ }
+
+ if(dpi->attempt == atmp) {
+ ++(dpi->cnt);
+ }
+ else {
+ dpi->attempt = atmp;
+ dpi->cnt = 0;
+ }
+
+}
+
+static void
+jme_dynamic_pcc(struct jme_adapter *jme)
+{
+ register struct dynpcc_info *dpi = &(jme->dpi);
+
+ if((NET_STAT(jme).rx_bytes - dpi->last_bytes) > PCC_P3_THRESHOLD)
+ jme_attempt_pcc(dpi, PCC_P3);
+ else if((NET_STAT(jme).rx_packets - dpi->last_pkts) > PCC_P2_THRESHOLD
+ || dpi->intr_cnt > PCC_INTR_THRESHOLD)
+ jme_attempt_pcc(dpi, PCC_P2);
+ else
+ jme_attempt_pcc(dpi, PCC_P1);
+
+ if(unlikely(dpi->attempt != dpi->cur && dpi->cnt > 5)) {
+ jme_set_rx_pcc(jme, dpi->attempt);
+ dpi->cur = dpi->attempt;
+ dpi->cnt = 0;
+ }
+}
+
+static void
+jme_start_pcc_timer(struct jme_adapter *jme)
+{
+ struct dynpcc_info *dpi = &(jme->dpi);
+ dpi->last_bytes = NET_STAT(jme).rx_bytes;
+ dpi->last_pkts = NET_STAT(jme).rx_packets;
+ dpi->intr_cnt = 0;
+ jwrite32(jme, JME_TMCSR,
+ TMCSR_EN | ((0xFFFFFF - PCC_INTERVAL_US) & TMCSR_CNT));
+}
+
+__always_inline static void
+jme_stop_pcc_timer(struct jme_adapter *jme)
+{
+ jwrite32(jme, JME_TMCSR, 0);
+}
+
+static void
+jme_pcc_tasklet(unsigned long arg)
+{
+ struct jme_adapter *jme = (struct jme_adapter*)arg;
+ struct net_device *netdev = jme->dev;
+
+
+ if(unlikely(!netif_carrier_ok(netdev) ||
+ (atomic_read(&jme->link_changing) != 1)
+ )) {
+ jme_stop_pcc_timer(jme);
+ return;
+ }
+
+ if(!(jme->flags & JME_FLAG_POLL))
+ jme_dynamic_pcc(jme);
+
+ jme_start_pcc_timer(jme);
+}
+
+__always_inline static void
+jme_polling_mode(struct jme_adapter *jme)
+{
+ jme_set_rx_pcc(jme, PCC_OFF);
+}
+
+__always_inline static void
+jme_interrupt_mode(struct jme_adapter *jme)
+{
+ jme_set_rx_pcc(jme, PCC_P1);
+}
+
static void
jme_link_change_tasklet(unsigned long arg)
{
if(!atomic_dec_and_test(&jme->link_changing))
goto out;
- if(jme_check_link(netdev, 1))
+ if(jme_check_link(netdev, 1) && jme->old_mtu == netdev->mtu)
goto out;
+ jme->old_mtu = netdev->mtu;
netif_stop_queue(netdev);
while(--timeout > 0 &&
}
if(netif_carrier_ok(netdev)) {
+ jme_stop_pcc_timer(jme);
jme_reset_mac_processor(jme);
jme_free_rx_resources(jme);
jme_free_tx_resources(jme);
+
+ if(jme->flags & JME_FLAG_POLL) {
+ jme_polling_mode(jme);
+ napi_disable(&jme->napi);
+ }
}
jme_check_link(netdev, 0);
jme_enable_tx_engine(jme);
netif_start_queue(netdev);
+
+ if(jme->flags & JME_FLAG_POLL) {
+ napi_enable(&jme->napi);
+ jme_interrupt_mode(jme);
+ }
+
+ jme_start_pcc_timer(jme);
}
goto out;
jme_rx_clean_tasklet(unsigned long arg)
{
struct jme_adapter *jme = (struct jme_adapter*)arg;
+ struct dynpcc_info *dpi = &(jme->dpi);
- if(!atomic_dec_and_test(&jme->rx_cleaning))
- goto out;
-
- if(atomic_read(&jme->link_changing) != 1)
- goto out;
+ jme_process_receive(jme, jme->rx_ring_size);
+ ++(dpi->intr_cnt);
- if(unlikely(netif_queue_stopped(jme->dev)))
- goto out;
+}
+
+static int
+jme_poll(struct napi_struct *napi, int budget)
+{
+ struct jme_adapter *jme = container_of(napi, struct jme_adapter, napi);
+ struct net_device *netdev = jme->dev;
+ int rest;
- jme_process_receive(jme, RING_DESC_NR);
+ rest = jme_process_receive(jme, budget);
-out:
- atomic_inc(&jme->rx_cleaning);
+ while(!atomic_dec_and_test(&jme->rx_empty)) {
+ ++(NET_STAT(jme).rx_dropped);
+ jme_restart_rx_engine(jme);
+ }
+ atomic_inc(&jme->rx_empty);
+
+ if(rest) {
+ netif_rx_complete(netdev, napi);
+ jme_interrupt_mode(jme);
+ }
+
+ return budget - rest;
}
static void
{
struct jme_adapter *jme = (struct jme_adapter*)arg;
- if(atomic_read(&jme->link_changing) != 1)
+ if(unlikely(atomic_read(&jme->link_changing) != 1))
return;
- if(unlikely(netif_queue_stopped(jme->dev)))
+ if(unlikely(!netif_carrier_ok(jme->dev)))
return;
+ queue_dbg(jme->dev->name, "RX Queue Full!\n");
+
jme_rx_clean_tasklet(arg);
jme_restart_rx_engine(jme);
}
+static void
+jme_wake_queue_if_stopped(struct jme_adapter *jme)
+{
+ struct jme_ring *txring = jme->txring;
+
+ smp_wmb();
+ if(unlikely(netif_queue_stopped(jme->dev) &&
+ atomic_read(&txring->nr_free) >= (jme->tx_wake_threshold))) {
+
+ queue_dbg(jme->dev->name, "TX Queue Waked.\n");
+ netif_wake_queue(jme->dev);
+
+ }
+
+}
+
static void
jme_tx_clean_tasklet(unsigned long arg)
{
struct jme_ring *txring = &(jme->txring[0]);
volatile struct txdesc *txdesc = txring->desc;
struct jme_buffer_info *txbi = txring->bufinf, *ctxbi, *ttxbi;
- int i, j, cnt = 0, max, err;
+ int i, j, cnt = 0, max, err, mask;
- if(!atomic_dec_and_test(&jme->tx_cleaning))
+ if(unlikely(!atomic_dec_and_test(&jme->tx_cleaning)))
goto out;
- if(atomic_read(&jme->link_changing) != 1)
+ if(unlikely(atomic_read(&jme->link_changing) != 1))
goto out;
- if(unlikely(netif_queue_stopped(jme->dev)))
+ if(unlikely(!netif_carrier_ok(jme->dev)))
goto out;
- spin_lock(&jme->tx_lock);
- max = RING_DESC_NR - txring->nr_free;
- spin_unlock(&jme->tx_lock);
+ max = jme->tx_ring_size - atomic_read(&txring->nr_free);
+ mask = jme->tx_ring_mask;
tx_dbg(jme->dev->name, "Tx Tasklet: In\n");
ctxbi = txbi + i;
- if(ctxbi->skb && !(txdesc[i].descwb.flags & TXWBFLAG_OWN)) {
+ if(likely(ctxbi->skb &&
+ !(txdesc[i].descwb.flags & TXWBFLAG_OWN))) {
err = txdesc[i].descwb.flags & TXWBFLAG_ALLERR;
i, ctxbi->nr_desc);
for(j = 1 ; j < ctxbi->nr_desc ; ++j) {
- ttxbi = txbi + ((i + j) & (RING_DESC_NR - 1));
- txdesc[(i+j)&(RING_DESC_NR-1)].dw[0] = 0;
+ ttxbi = txbi + ((i + j) & (mask));
+ txdesc[(i + j) & (mask)].dw[0] = 0;
- pci_unmap_single(jme->pdev,
+ pci_unmap_page(jme->pdev,
ttxbi->mapping,
ttxbi->len,
PCI_DMA_TODEVICE);
- if(likely(!err))
- NET_STAT(jme).tx_bytes += ttxbi->len;
-
ttxbi->mapping = 0;
ttxbi->len = 0;
}
dev_kfree_skb(ctxbi->skb);
- ctxbi->skb = NULL;
cnt += ctxbi->nr_desc;
if(unlikely(err))
++(NET_STAT(jme).tx_carrier_errors);
- else
+ else {
++(NET_STAT(jme).tx_packets);
+ NET_STAT(jme).tx_bytes += ctxbi->len;
+ }
+
+ ctxbi->skb = NULL;
+ ctxbi->len = 0;
}
else {
if(!ctxbi->skb)
tx_dbg(jme->dev->name,
"Tx Tasklet:"
- " Stoped due to no skb.\n");
+ " Stopped due to no skb.\n");
else
tx_dbg(jme->dev->name,
"Tx Tasklet:"
- "Stoped due to not done.\n");
+ "Stopped due to not done.\n");
break;
}
- if(unlikely((i += ctxbi->nr_desc) >= RING_DESC_NR))
- i -= RING_DESC_NR;
+ i = (i + ctxbi->nr_desc) & mask;
ctxbi->nr_desc = 0;
}
i, jiffies);
txring->next_to_clean = i;
- spin_lock(&jme->tx_lock);
- txring->nr_free += cnt;
- spin_unlock(&jme->tx_lock);
+ atomic_add(cnt, &txring->nr_free);
+
+ jme_wake_queue_if_stopped(jme);
out:
atomic_inc(&jme->tx_cleaning);
}
-static irqreturn_t
-jme_intr(int irq, void *dev_id)
+static void
+jme_intr_msi(struct jme_adapter *jme, __u32 intrstat)
{
- struct net_device *netdev = dev_id;
- struct jme_adapter *jme = netdev_priv(netdev);
- irqreturn_t rc = IRQ_HANDLED;
- __u32 intrstat;
-
-#if USE_IEVE_SHADOW
- pci_dma_sync_single_for_cpu(jme->pdev,
- jme->shadow_dma,
- sizeof(__u32) * SHADOW_REG_NR,
- PCI_DMA_FROMDEVICE);
- intrstat = jme->shadow_regs[SHADOW_IEVE];
- jme->shadow_regs[SHADOW_IEVE] = 0;
-#else
- intrstat = jread32(jme, JME_IEVE);
-#endif
-
- /*
- * Check if it's really an interrupt for us
- */
- if(intrstat == 0) {
- rc = IRQ_NONE;
- goto out;
- }
-
/*
- * Check if the device still exist
+ * Disable interrupt
*/
- if(unlikely(intrstat == ~((typeof(intrstat))0))) {
- rc = IRQ_NONE;
- goto out;
- }
+ jwrite32f(jme, JME_IENC, INTR_ENABLE);
/*
- * Allow one interrupt handling at a time
+ * Write 1 clear interrupt status
*/
- if(unlikely(!atomic_dec_and_test(&jme->intr_sem)))
- goto out_inc;
-
- /*
- * Disable interrupt
- */
- jwrite32f(jme, JME_IENC, INTR_ENABLE);
+ jwrite32f(jme, JME_IEVE, intrstat);
- if(intrstat & INTR_LINKCH) {
+ if(intrstat & (INTR_LINKCH | INTR_SWINTR)) {
tasklet_schedule(&jme->linkch_task);
- goto out_deassert;
+ goto out_reenable;
}
- if(intrstat & INTR_RX0EMP)
- tasklet_schedule(&jme->rxempty_task);
-
- if(intrstat & (INTR_PCCRX0TO | INTR_PCCRX0))
- tasklet_schedule(&jme->rxclean_task);
+ if(intrstat & INTR_TMINTR)
+ tasklet_schedule(&jme->pcc_task);
if(intrstat & (INTR_PCCTXTO | INTR_PCCTX))
tasklet_schedule(&jme->txclean_task);
- if((intrstat & ~INTR_ENABLE) != 0) {
- /*
- * Some interrupt not handled
- * but not enabled also (for debug)
- */
+ if(jme->flags & JME_FLAG_POLL) {
+ if(intrstat & INTR_RX0EMP)
+ atomic_inc(&jme->rx_empty);
+
+ if((intrstat & (INTR_PCCRX0TO | INTR_PCCRX0 | INTR_RX0EMP))) {
+ if(likely(
+ netif_rx_schedule_prep(jme->dev, &jme->napi))) {
+ jme_polling_mode(jme);
+ __netif_rx_schedule(jme->dev, &jme->napi);
+ }
+ }
}
+ else {
+ if(intrstat & INTR_RX0EMP)
+ tasklet_schedule(&jme->rxempty_task);
-out_deassert:
- /*
- * Deassert interrupts
- */
- jwrite32f(jme, JME_IEVE, intrstat);
+ if(intrstat & (INTR_PCCRX0TO | INTR_PCCRX0))
+ tasklet_schedule(&jme->rxclean_task);
+ }
+out_reenable:
/*
* Re-enable interrupt
*/
jwrite32f(jme, JME_IENS, INTR_ENABLE);
-out_inc:
+
+}
+
+static irqreturn_t
+jme_intr(int irq, void *dev_id)
+{
+ struct net_device *netdev = dev_id;
+ struct jme_adapter *jme = netdev_priv(netdev);
+ __u32 intrstat;
+
+ intrstat = jread32(jme, JME_IEVE);
+
/*
- * Enable next interrupt handling
+ * Check if it's really an interrupt for us
*/
- atomic_inc(&jme->intr_sem);
+ if(unlikely(intrstat == 0))
+ return IRQ_NONE;
-out:
- return rc;
+ /*
+ * Check if the device still exist
+ */
+ if(unlikely(intrstat == ~((typeof(intrstat))0)))
+ return IRQ_NONE;
+
+ jme_intr_msi(jme, intrstat);
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t
+jme_msi(int irq, void *dev_id)
+{
+ struct net_device *netdev = dev_id;
+ struct jme_adapter *jme = netdev_priv(netdev);
+ __u32 intrstat;
+
+ pci_dma_sync_single_for_cpu(jme->pdev,
+ jme->shadow_dma,
+ sizeof(__u32) * SHADOW_REG_NR,
+ PCI_DMA_FROMDEVICE);
+ intrstat = jme->shadow_regs[SHADOW_IEVE];
+ jme->shadow_regs[SHADOW_IEVE] = 0;
+
+ jme_intr_msi(jme, intrstat);
+
+ return IRQ_HANDLED;
+}
+
+
+static void
+jme_reset_link(struct jme_adapter *jme)
+{
+ jwrite32(jme, JME_TMCSR, TMCSR_SWIT);
}
static void
jme_restart_an(struct jme_adapter *jme)
{
__u32 bmcr;
+ unsigned long flags;
+ spin_lock_irqsave(&jme->phy_lock, flags);
bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR);
bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, bmcr);
+ spin_unlock_irqrestore(&jme->phy_lock, flags);
+}
+
+static int
+jme_request_irq(struct jme_adapter *jme)
+{
+ int rc;
+ struct net_device *netdev = jme->dev;
+ irq_handler_t handler = jme_intr;
+ int irq_flags = IRQF_SHARED;
+
+ if (!pci_enable_msi(jme->pdev)) {
+ jme->flags |= JME_FLAG_MSI;
+ handler = jme_msi;
+ irq_flags = 0;
+ }
+
+ rc = request_irq(jme->pdev->irq, handler, irq_flags, netdev->name,
+ netdev);
+ if(rc) {
+ jeprintk(netdev->name,
+ "Unable to request %s interrupt (return: %d)\n",
+ jme->flags & JME_FLAG_MSI ? "MSI":"INTx", rc);
+
+ if(jme->flags & JME_FLAG_MSI) {
+ pci_disable_msi(jme->pdev);
+ jme->flags &= ~JME_FLAG_MSI;
+ }
+ }
+ else {
+ netdev->irq = jme->pdev->irq;
+ }
+
+ return rc;
+}
+
+static void
+jme_free_irq(struct jme_adapter *jme)
+{
+ free_irq(jme->pdev->irq, jme->dev);
+ if (jme->flags & JME_FLAG_MSI) {
+ pci_disable_msi(jme->pdev);
+ jme->flags &= ~JME_FLAG_MSI;
+ jme->dev->irq = jme->pdev->irq;
+ }
}
static int
)
msleep(10);
+ if(!timeout) {
+ rc = -EBUSY;
+ goto err_out;
+ }
+
+ jme_clear_pm(jme);
jme_reset_mac_processor(jme);
- rc = request_irq(jme->pdev->irq, jme_intr,
- IRQF_SHARED, netdev->name, netdev);
- if(rc) {
- printk(KERN_ERR PFX "Requesting IRQ error.\n");
+ rc = jme_request_irq(jme);
+ if(rc)
goto err_out;
- }
+
jme_enable_shadow(jme);
jme_start_irq(jme);
- jme_restart_an(jme);
+
+ if(jme->flags & JME_FLAG_SSET)
+ jme_set_settings(netdev, &jme->old_ecmd);
+ else
+ jme_reset_phy_processor(jme);
+
+ jme_reset_link(jme);
return 0;
return rc;
}
+static void
+jme_set_100m_half(struct jme_adapter *jme)
+{
+ __u32 bmcr, tmp;
+
+ bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR);
+ tmp = bmcr & ~(BMCR_ANENABLE | BMCR_SPEED100 |
+ BMCR_SPEED1000 | BMCR_FULLDPLX);
+ tmp |= BMCR_SPEED100;
+
+ if (bmcr != tmp)
+ jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, tmp);
+
+ jwrite32(jme, JME_GHC, GHC_SPEED_100M);
+}
+
+static void
+jme_phy_off(struct jme_adapter *jme)
+{
+ jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, BMCR_PDOWN);
+}
+
+
static int
jme_close(struct net_device *netdev)
{
jme_stop_irq(jme);
jme_disable_shadow(jme);
- free_irq(jme->pdev->irq, jme->dev);
+ jme_free_irq(jme);
+
+ if(jme->flags & JME_FLAG_POLL)
+ napi_disable(&jme->napi);
tasklet_kill(&jme->linkch_task);
tasklet_kill(&jme->txclean_task);
jme_reset_mac_processor(jme);
jme_free_rx_resources(jme);
jme_free_tx_resources(jme);
+ jme->phylink = 0;
+ jme_phy_off(jme);
return 0;
}
+static int
+jme_alloc_txdesc(struct jme_adapter *jme,
+ struct sk_buff *skb)
+{
+ struct jme_ring *txring = jme->txring;
+ int idx, nr_alloc, mask = jme->tx_ring_mask;
+
+ idx = txring->next_to_use;
+ nr_alloc = skb_shinfo(skb)->nr_frags + 2;
+
+ if(unlikely(atomic_read(&txring->nr_free) < nr_alloc))
+ return -1;
+
+ atomic_sub(nr_alloc, &txring->nr_free);
+
+ txring->next_to_use = (txring->next_to_use + nr_alloc) & mask;
+
+ return idx;
+}
+
+static void
+jme_fill_tx_map(struct pci_dev *pdev,
+ volatile struct txdesc *txdesc,
+ struct jme_buffer_info *txbi,
+ struct page *page,
+ __u32 page_offset,
+ __u32 len,
+ __u8 hidma)
+{
+ dma_addr_t dmaaddr;
+
+ dmaaddr = pci_map_page(pdev,
+ page,
+ page_offset,
+ len,
+ PCI_DMA_TODEVICE);
+
+ pci_dma_sync_single_for_device(pdev,
+ dmaaddr,
+ len,
+ PCI_DMA_TODEVICE);
+
+ txdesc->dw[0] = 0;
+ txdesc->dw[1] = 0;
+ txdesc->desc2.flags = TXFLAG_OWN;
+ txdesc->desc2.flags |= (hidma)?TXFLAG_64BIT:0;
+ txdesc->desc2.datalen = cpu_to_le16(len);
+ txdesc->desc2.bufaddrh = cpu_to_le32((__u64)dmaaddr >> 32);
+ txdesc->desc2.bufaddrl = cpu_to_le32(
+ (__u64)dmaaddr & 0xFFFFFFFFUL);
+
+ txbi->mapping = dmaaddr;
+ txbi->len = len;
+}
+
+static void
+jme_map_tx_skb(struct jme_adapter *jme, struct sk_buff *skb, int idx)
+{
+ struct jme_ring *txring = jme->txring;
+ volatile struct txdesc *txdesc = txring->desc, *ctxdesc;
+ struct jme_buffer_info *txbi = txring->bufinf, *ctxbi;
+ __u8 hidma = jme->dev->features & NETIF_F_HIGHDMA;
+ int i, nr_frags = skb_shinfo(skb)->nr_frags;
+ int mask = jme->tx_ring_mask;
+ struct skb_frag_struct *frag;
+ __u32 len;
+
+ for(i = 0 ; i < nr_frags ; ++i) {
+ frag = &skb_shinfo(skb)->frags[i];
+ ctxdesc = txdesc + ((idx + i + 2) & (mask));
+ ctxbi = txbi + ((idx + i + 2) & (mask));
+
+ jme_fill_tx_map(jme->pdev, ctxdesc, ctxbi, frag->page,
+ frag->page_offset, frag->size, hidma);
+ }
+
+ len = skb_is_nonlinear(skb)?skb_headlen(skb):skb->len;
+ ctxdesc = txdesc + ((idx + 1) & (mask));
+ ctxbi = txbi + ((idx + 1) & (mask));
+ jme_fill_tx_map(jme->pdev, ctxdesc, ctxbi, virt_to_page(skb->data),
+ offset_in_page(skb->data), len, hidma);
+
+}
+
+static int
+jme_expand_header(struct jme_adapter *jme, struct sk_buff *skb)
+{
+ if(unlikely(skb_shinfo(skb)->gso_size &&
+ skb_header_cloned(skb) &&
+ pskb_expand_head(skb, 0, 0, GFP_ATOMIC))) {
+ dev_kfree_skb(skb);
+ return -1;
+ }
+
+ return 0;
+}
+
+static int
+jme_tx_tso(struct sk_buff *skb,
+ volatile __u16 *mss, __u8 *flags)
+{
+ if((*mss = (skb_shinfo(skb)->gso_size << TXDESC_MSS_SHIFT))) {
+ *flags |= TXFLAG_LSEN;
+
+ if(skb->protocol == __constant_htons(ETH_P_IP)) {
+ struct iphdr *iph = ip_hdr(skb);
+
+ iph->check = 0;
+ tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr,
+ iph->daddr, 0,
+ IPPROTO_TCP,
+ 0);
+ }
+ else {
+ struct ipv6hdr *ip6h = ipv6_hdr(skb);
+
+ tcp_hdr(skb)->check = ~csum_ipv6_magic(&ip6h->saddr,
+ &ip6h->daddr, 0,
+ IPPROTO_TCP,
+ 0);
+ }
+
+ return 0;
+ }
+
+ return 1;
+}
+
+static void
+jme_tx_csum(struct sk_buff *skb, __u8 *flags)
+{
+ if(skb->ip_summed == CHECKSUM_PARTIAL) {
+ __u8 ip_proto;
+
+ switch (skb->protocol) {
+ case __constant_htons(ETH_P_IP):
+ ip_proto = ip_hdr(skb)->protocol;
+ break;
+ case __constant_htons(ETH_P_IPV6):
+ ip_proto = ipv6_hdr(skb)->nexthdr;
+ break;
+ default:
+ ip_proto = 0;
+ break;
+ }
+
+ switch(ip_proto) {
+ case IPPROTO_TCP:
+ *flags |= TXFLAG_TCPCS;
+ break;
+ case IPPROTO_UDP:
+ *flags |= TXFLAG_UDPCS;
+ break;
+ default:
+ jeprintk("jme", "Error upper layer protocol.\n");
+ break;
+ }
+ }
+}
+
+__always_inline static void
+jme_tx_vlan(struct sk_buff *skb, volatile __u16 *vlan, __u8 *flags)
+{
+ if(vlan_tx_tag_present(skb)) {
+ vlan_dbg("jme", "Tag found!(%04x)\n", vlan_tx_tag_get(skb));
+ *flags |= TXFLAG_TAGON;
+ *vlan = vlan_tx_tag_get(skb);
+ }
+}
+
+static int
+jme_fill_first_tx_desc(struct jme_adapter *jme, struct sk_buff *skb, int idx)
+{
+ struct jme_ring *txring = jme->txring;
+ volatile struct txdesc *txdesc;
+ struct jme_buffer_info *txbi;
+ __u8 flags;
+
+ txdesc = (volatile struct txdesc*)txring->desc + idx;
+ txbi = txring->bufinf + idx;
+
+ txdesc->dw[0] = 0;
+ txdesc->dw[1] = 0;
+ txdesc->dw[2] = 0;
+ txdesc->dw[3] = 0;
+ txdesc->desc1.pktsize = cpu_to_le16(skb->len);
+ /*
+ * Set OWN bit at final.
+ * When kernel transmit faster than NIC.
+ * And NIC trying to send this descriptor before we tell
+ * it to start sending this TX queue.
+ * Other fields are already filled correctly.
+ */
+ wmb();
+ flags = TXFLAG_OWN | TXFLAG_INT;
+ //Set checksum flags while not tso
+ if(jme_tx_tso(skb, &txdesc->desc1.mss, &flags))
+ jme_tx_csum(skb, &flags);
+ jme_tx_vlan(skb, &txdesc->desc1.vlan, &flags);
+ txdesc->desc1.flags = flags;
+ /*
+ * Set tx buffer info after telling NIC to send
+ * For better tx_clean timing
+ */
+ wmb();
+ txbi->nr_desc = skb_shinfo(skb)->nr_frags + 2;
+ txbi->skb = skb;
+ txbi->len = skb->len;
+
+ return 0;
+}
+
+static void
+jme_stop_queue_if_full(struct jme_adapter *jme)
+{
+ struct jme_ring *txring = jme->txring;
+
+ smp_wmb();
+ if(unlikely(atomic_read(&txring->nr_free) < (MAX_SKB_FRAGS+2))) {
+ netif_stop_queue(jme->dev);
+ queue_dbg(jme->dev->name, "TX Queue Paused.\n");
+ smp_wmb();
+ if (atomic_read(&txring->nr_free) >= (jme->tx_wake_threshold)) {
+ netif_wake_queue(jme->dev);
+ queue_dbg(jme->dev->name, "TX Queue Fast Waked.\n");
+ }
+ }
+
+}
+
/*
* This function is already protected by netif_tx_lock()
*/
jme_start_xmit(struct sk_buff *skb, struct net_device *netdev)
{
struct jme_adapter *jme = netdev_priv(netdev);
- int rc;
+ int idx;
+
+ if(skb_shinfo(skb)->nr_frags) {
+ tx_dbg(netdev->name, "Frags: %d Headlen: %d Len: %d MSS: %d Sum:%d\n",
+ skb_shinfo(skb)->nr_frags,
+ skb_headlen(skb),
+ skb->len,
+ skb_shinfo(skb)->gso_size,
+ skb->ip_summed);
+ }
+
+ if(unlikely(jme_expand_header(jme, skb))) {
+ ++(NET_STAT(jme).tx_dropped);
+ return NETDEV_TX_OK;
+ }
+
+ idx = jme_alloc_txdesc(jme, skb);
+
+ if(unlikely(idx<0)) {
+ netif_stop_queue(netdev);
+ jeprintk(netdev->name,
+ "BUG! Tx ring full when queue awake!\n");
- if(unlikely(netif_queue_stopped(jme->dev)))
- return NETDEV_TX_BUSY;
+ return NETDEV_TX_BUSY;
+ }
- rc = jme_set_new_txdesc(jme, skb);
+ jme_map_tx_skb(jme, skb, idx);
+ jme_fill_first_tx_desc(jme, skb, idx);
- if(unlikely(rc != NETDEV_TX_OK))
- return rc;
+ tx_dbg(jme->dev->name, "Xmit: %d+%d\n", idx, skb_shinfo(skb)->nr_frags + 2);
jwrite32(jme, JME_TXCS, jme->reg_txcs |
TXCS_SELECT_QUEUE0 |
TXCS_ENABLE);
netdev->trans_start = jiffies;
+ jme_stop_queue_if_full(jme);
+
return NETDEV_TX_OK;
}
static int
jme_change_mtu(struct net_device *netdev, int new_mtu)
{
- /*
- * Not supporting MTU change for now.
- */
- return -EINVAL;
+ struct jme_adapter *jme = netdev_priv(netdev);
+
+ if(new_mtu == jme->old_mtu)
+ return 0;
+
+ if (((new_mtu + ETH_HLEN) > MAX_ETHERNET_JUMBO_PACKET_SIZE) ||
+ ((new_mtu) < IPV6_MIN_MTU))
+ return -EINVAL;
+
+ if(new_mtu > 4000) {
+ jme->reg_rxcs &= ~RXCS_FIFOTHNP;
+ jme->reg_rxcs |= RXCS_FIFOTHNP_64QW;
+ jme_restart_rx_engine(jme);
+ }
+ else {
+ jme->reg_rxcs &= ~RXCS_FIFOTHNP;
+ jme->reg_rxcs |= RXCS_FIFOTHNP_128QW;
+ jme_restart_rx_engine(jme);
+ }
+
+ if(new_mtu > 1900) {
+ netdev->features &= ~(NETIF_F_HW_CSUM |
+ NETIF_F_TSO |
+ NETIF_F_TSO6);
+ }
+ else {
+ if(jme->flags & JME_FLAG_TXCSUM)
+ netdev->features |= NETIF_F_HW_CSUM;
+ if(jme->flags & JME_FLAG_TSO)
+ netdev->features |= NETIF_F_TSO | NETIF_F_TSO6;
+ }
+
+ netdev->mtu = new_mtu;
+ jme_reset_link(jme);
+
+ return 0;
}
static void
/*
* Reset the link
- * And the link change will reinitiallize all RX/TX resources
+ * And the link change will reinitialize all RX/TX resources
*/
- jme_restart_an(jme);
+ jme->phylink = 0;
+ jme_reset_link(jme);
+}
+
+static void
+jme_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp)
+{
+ struct jme_adapter *jme = netdev_priv(netdev);
+
+ jme->vlgrp = grp;
}
static void
int i;
for(i = 0 ; i < len ; i += 4)
- p[i>>2] = jread32(jme, reg + i);
+ p[i >> 2] = jread32(jme, reg + i);
}
{
struct jme_adapter *jme = netdev_priv(netdev);
- ecmd->use_adaptive_rx_coalesce = true;
+ if(jme->flags & JME_FLAG_POLL)
+ ecmd->use_adaptive_rx_coalesce = false;
+ else
+ ecmd->use_adaptive_rx_coalesce = true;
+
ecmd->tx_coalesce_usecs = PCC_TX_TO;
ecmd->tx_max_coalesced_frames = PCC_TX_CNT;
return 0;
}
+static int
+jme_set_coalesce(struct net_device *netdev, struct ethtool_coalesce *ecmd)
+{
+ struct jme_adapter *jme = netdev_priv(netdev);
+ struct dynpcc_info *dpi = &(jme->dpi);
+
+ if(ecmd->use_adaptive_rx_coalesce
+ && (jme->flags & JME_FLAG_POLL)) {
+ jme->flags &= ~JME_FLAG_POLL;
+ napi_disable(&jme->napi);
+ dpi->cur = PCC_P1;
+ dpi->attempt = PCC_P1;
+ dpi->cnt = 0;
+ jme_set_rx_pcc(jme, PCC_P1);
+ jme_interrupt_mode(jme);
+ }
+ else if(!(ecmd->use_adaptive_rx_coalesce)
+ && !(jme->flags & JME_FLAG_POLL)) {
+ jme->flags |= JME_FLAG_POLL;
+ napi_enable(&jme->napi);
+ jme_interrupt_mode(jme);
+ }
+
+ return 0;
+}
+
static void
jme_get_pauseparam(struct net_device *netdev,
struct ethtool_pauseparam *ecmd)
spin_lock_irqsave(&jme->phy_lock, flags);
val = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_ADVERTISE);
spin_unlock_irqrestore(&jme->phy_lock, flags);
- ecmd->autoneg = (val & (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM)) != 0;
+
+ ecmd->autoneg =
+ (val & (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM)) != 0;
}
static int
spin_lock_irqsave(&jme->phy_lock, flags);
val = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_ADVERTISE);
- if( ((val & (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM)) != 0) !=
+ if( ((val & (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM)) != 0) !=
(ecmd->autoneg != 0)) {
if(ecmd->autoneg)
else
val &= ~(ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
- jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_ADVERTISE, val);
+ jme_mdio_write(jme->dev, jme->mii_if.phy_id,
+ MII_ADVERTISE, val);
}
spin_unlock_irqrestore(&jme->phy_lock, flags);
return 0;
}
+static void
+jme_get_wol(struct net_device *netdev,
+ struct ethtool_wolinfo *wol)
+{
+ struct jme_adapter *jme = netdev_priv(netdev);
+
+ wol->supported = WAKE_MAGIC | WAKE_PHY;
+
+ wol->wolopts = 0;
+
+ if(jme->reg_pmcs & (PMCS_LFEN | PMCS_LREN))
+ wol->wolopts |= WAKE_PHY;
+
+ if(jme->reg_pmcs & PMCS_MFEN)
+ wol->wolopts |= WAKE_MAGIC;
+
+}
+
+static int
+jme_set_wol(struct net_device *netdev,
+ struct ethtool_wolinfo *wol)
+{
+ struct jme_adapter *jme = netdev_priv(netdev);
+
+ if(wol->wolopts & (WAKE_MAGICSECURE |
+ WAKE_UCAST |
+ WAKE_MCAST |
+ WAKE_BCAST |
+ WAKE_ARP))
+ return -EOPNOTSUPP;
+
+ jme->reg_pmcs = 0;
+
+ if(wol->wolopts & WAKE_PHY)
+ jme->reg_pmcs |= PMCS_LFEN | PMCS_LREN;
+
+ if(wol->wolopts & WAKE_MAGIC)
+ jme->reg_pmcs |= PMCS_MFEN;
+
+
+ return 0;
+}
+
static int
jme_get_settings(struct net_device *netdev,
struct ethtool_cmd *ecmd)
{
struct jme_adapter *jme = netdev_priv(netdev);
int rc;
+ unsigned long flags;
- spin_lock(&jme->phy_lock);
+ spin_lock_irqsave(&jme->phy_lock, flags);
rc = mii_ethtool_gset(&(jme->mii_if), ecmd);
- spin_unlock(&jme->phy_lock);
+ spin_unlock_irqrestore(&jme->phy_lock, flags);
return rc;
}
struct ethtool_cmd *ecmd)
{
struct jme_adapter *jme = netdev_priv(netdev);
- int rc;
+ int rc, fdc=0;
unsigned long flags;
if(ecmd->speed == SPEED_1000 && ecmd->autoneg != AUTONEG_ENABLE)
return -EINVAL;
+ if(jme->mii_if.force_media &&
+ ecmd->autoneg != AUTONEG_ENABLE &&
+ (jme->mii_if.full_duplex != ecmd->duplex))
+ fdc = 1;
+
spin_lock_irqsave(&jme->phy_lock, flags);
rc = mii_ethtool_sset(&(jme->mii_if), ecmd);
spin_unlock_irqrestore(&jme->phy_lock, flags);
+ if(!rc && fdc)
+ jme_reset_link(jme);
+
+ if(!rc) {
+ jme->flags |= JME_FLAG_SSET;
+ jme->old_ecmd = *ecmd;
+ }
+
return rc;
}
{
struct jme_adapter *jme = netdev_priv(netdev);
unsigned long flags;
-
+
spin_lock_irqsave(&jme->rxmcs_lock, flags);
if(on)
jme->reg_rxmcs |= RXMCS_CHECKSUM;
static int
jme_set_tx_csum(struct net_device *netdev, u32 on)
{
- if(on)
- netdev->features |= NETIF_F_HW_CSUM;
- else
+ struct jme_adapter *jme = netdev_priv(netdev);
+
+ if(on) {
+ jme->flags |= JME_FLAG_TXCSUM;
+ if(netdev->mtu <= 1900)
+ netdev->features |= NETIF_F_HW_CSUM;
+ }
+ else {
+ jme->flags &= ~JME_FLAG_TXCSUM;
netdev->features &= ~NETIF_F_HW_CSUM;
+ }
return 0;
}
+static int
+jme_set_tso(struct net_device *netdev, u32 on)
+{
+ struct jme_adapter *jme = netdev_priv(netdev);
+
+ if (on) {
+ jme->flags |= JME_FLAG_TSO;
+ if(netdev->mtu <= 1900)
+ netdev->features |= NETIF_F_TSO | NETIF_F_TSO6;
+ }
+ else {
+ jme->flags &= ~JME_FLAG_TSO;
+ netdev->features &= ~(NETIF_F_TSO | NETIF_F_TSO6);
+ }
+
+ return 0;
+}
+
static int
jme_nway_reset(struct net_device *netdev)
{
.get_regs_len = jme_get_regs_len,
.get_regs = jme_get_regs,
.get_coalesce = jme_get_coalesce,
+ .set_coalesce = jme_set_coalesce,
.get_pauseparam = jme_get_pauseparam,
.set_pauseparam = jme_set_pauseparam,
+ .get_wol = jme_get_wol,
+ .set_wol = jme_set_wol,
.get_settings = jme_get_settings,
.set_settings = jme_set_settings,
.get_link = jme_get_link,
.get_rx_csum = jme_get_rx_csum,
.set_rx_csum = jme_set_rx_csum,
.set_tx_csum = jme_set_tx_csum,
+ .set_tso = jme_set_tso,
+ .set_sg = ethtool_op_set_sg,
.nway_reset = jme_nway_reset,
};
jme_pci_dma64(struct pci_dev *pdev)
{
if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK))
- if(!pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK))
+ if(!pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK)) {
+ dprintk("jme", "64Bit DMA Selected.\n");
return 1;
+ }
if (!pci_set_dma_mask(pdev, DMA_40BIT_MASK))
- if(!pci_set_consistent_dma_mask(pdev, DMA_40BIT_MASK))
+ if(!pci_set_consistent_dma_mask(pdev, DMA_40BIT_MASK)) {
+ dprintk("jme", "40Bit DMA Selected.\n");
return 1;
+ }
if (!pci_set_dma_mask(pdev, DMA_32BIT_MASK))
- if(!pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK))
+ if(!pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK)) {
+ dprintk("jme", "32Bit DMA Selected.\n");
return 0;
+ }
return -1;
}
+__always_inline static void
+jme_set_phy_ps(struct jme_adapter *jme)
+{
+ jme_mdio_write(jme->dev, jme->mii_if.phy_id, 26, 0x00001000);
+}
+
static int __devinit
jme_init_one(struct pci_dev *pdev,
const struct pci_device_id *ent)
*/
netdev = alloc_etherdev(sizeof(*jme));
if(!netdev) {
+ printk(KERN_ERR PFX "Cannot allocate netdev structure.\n");
rc = -ENOMEM;
goto err_out_release_regions;
}
netdev->open = jme_open;
netdev->stop = jme_close;
netdev->hard_start_xmit = jme_start_xmit;
- netdev->irq = pdev->irq;
netdev->set_mac_address = jme_set_macaddr;
netdev->set_multicast_list = jme_set_multi;
netdev->change_mtu = jme_change_mtu;
netdev->ethtool_ops = &jme_ethtool_ops;
netdev->tx_timeout = jme_tx_timeout;
netdev->watchdog_timeo = TX_TIMEOUT;
+ netdev->vlan_rx_register = jme_vlan_rx_register;
NETDEV_GET_STATS(netdev, &jme_get_stats);
- netdev->features = NETIF_F_HW_CSUM;
+ netdev->features = NETIF_F_HW_CSUM |
+ NETIF_F_SG |
+ NETIF_F_TSO |
+ NETIF_F_TSO6 |
+ NETIF_F_HW_VLAN_TX |
+ NETIF_F_HW_VLAN_RX;
if(using_dac)
netdev->features |= NETIF_F_HIGHDMA;
jme = netdev_priv(netdev);
jme->pdev = pdev;
jme->dev = netdev;
+ jme->old_mtu = netdev->mtu = 1500;
jme->phylink = 0;
+ jme->tx_ring_size = 1 << 10;
+ jme->tx_ring_mask = jme->tx_ring_size - 1;
+ jme->tx_wake_threshold = 1 << 9;
+ jme->rx_ring_size = 1 << 9;
+ jme->rx_ring_mask = jme->rx_ring_size - 1;
jme->regs = ioremap(pci_resource_start(pdev, 0),
pci_resource_len(pdev, 0));
if (!(jme->regs)) {
+ printk(KERN_ERR PFX "Mapping PCI resource region error.\n");
rc = -ENOMEM;
goto err_out_free_netdev;
}
sizeof(__u32) * SHADOW_REG_NR,
&(jme->shadow_dma));
if (!(jme->shadow_regs)) {
+ printk(KERN_ERR PFX "Allocating shadow register mapping error.\n");
rc = -ENOMEM;
goto err_out_unmap;
}
- spin_lock_init(&jme->tx_lock);
+ netif_napi_add(netdev, &jme->napi, jme_poll, jme->rx_ring_size >> 2);
+
spin_lock_init(&jme->phy_lock);
spin_lock_init(&jme->macaddr_lock);
spin_lock_init(&jme->rxmcs_lock);
- atomic_set(&jme->intr_sem, 1);
atomic_set(&jme->link_changing, 1);
atomic_set(&jme->rx_cleaning, 1);
atomic_set(&jme->tx_cleaning, 1);
+ atomic_set(&jme->rx_empty, 1);
+ tasklet_init(&jme->pcc_task,
+ &jme_pcc_tasklet,
+ (unsigned long) jme);
tasklet_init(&jme->linkch_task,
&jme_link_change_tasklet,
(unsigned long) jme);
jme->dpi.cur = PCC_P1;
jme->reg_ghc = GHC_DPX | GHC_SPEED_1000M;
+ jme->reg_rxcs = RXCS_DEFAULT;
jme->reg_rxmcs = RXMCS_DEFAULT;
jme->reg_txpfc = 0;
+ jme->reg_pmcs = PMCS_LFEN | PMCS_LREN | PMCS_MFEN;
+ jme->flags = JME_FLAG_TXCSUM | JME_FLAG_TSO | JME_FLAG_POLL;
+
/*
* Get Max Read Req Size from PCI Config Space
*/
* Reset MAC processor and reload EEPROM for MAC Address
*/
jme_clear_pm(jme);
- jme_reset_phy_processor(jme);
+ jme_set_phy_ps(jme);
+ jme_phy_off(jme);
jme_reset_mac_processor(jme);
rc = jme_reload_eeprom(jme);
if(rc) {
printk(KERN_ERR PFX
- "Rload eeprom for reading MAC Address error.\n");
+ "Reload eeprom for reading MAC Address error.\n");
goto err_out_free_shadow;
}
jme_load_macaddr(netdev);
}
+static int
+jme_suspend(struct pci_dev *pdev, pm_message_t state)
+{
+ struct net_device *netdev = pci_get_drvdata(pdev);
+ struct jme_adapter *jme = netdev_priv(netdev);
+ int timeout = 100;
+
+ atomic_dec(&jme->link_changing);
+
+ netif_device_detach(netdev);
+ netif_stop_queue(netdev);
+ jme_stop_irq(jme);
+ jme_free_irq(jme);
+
+ while(--timeout > 0 &&
+ (
+ atomic_read(&jme->rx_cleaning) != 1 ||
+ atomic_read(&jme->tx_cleaning) != 1
+ )) {
+ mdelay(1);
+ }
+ if(!timeout) {
+ jeprintk(netdev->name, "Waiting tasklets timeout.\n");
+ return -EBUSY;
+ }
+ jme_disable_shadow(jme);
+
+ if(netif_carrier_ok(netdev)) {
+ jme_stop_pcc_timer(jme);
+ jme_reset_mac_processor(jme);
+ jme_free_rx_resources(jme);
+ jme_free_tx_resources(jme);
+ netif_carrier_off(netdev);
+ jme->phylink = 0;
+
+ if(jme->flags & JME_FLAG_POLL) {
+ jme_polling_mode(jme);
+ napi_disable(&jme->napi);
+ }
+ }
+
+
+ pci_save_state(pdev);
+ if(jme->reg_pmcs) {
+ jme_set_100m_half(jme);
+ jwrite32(jme, JME_PMCS, jme->reg_pmcs);
+ pci_enable_wake(pdev, PCI_D3hot, true);
+ pci_enable_wake(pdev, PCI_D3cold, true);
+ }
+ else {
+ jme_phy_off(jme);
+ pci_enable_wake(pdev, PCI_D3hot, false);
+ pci_enable_wake(pdev, PCI_D3cold, false);
+ }
+ pci_set_power_state(pdev, pci_choose_state(pdev, state));
+
+ return 0;
+}
+
+static int
+jme_resume(struct pci_dev *pdev)
+{
+ struct net_device *netdev = pci_get_drvdata(pdev);
+ struct jme_adapter *jme = netdev_priv(netdev);
+
+ jme_clear_pm(jme);
+ pci_restore_state(pdev);
+
+ if(jme->flags & JME_FLAG_SSET)
+ jme_set_settings(netdev, &jme->old_ecmd);
+ else
+ jme_reset_phy_processor(jme);
+
+ jme_reset_mac_processor(jme);
+ jme_enable_shadow(jme);
+ jme_request_irq(jme);
+ jme_start_irq(jme);
+ netif_device_attach(netdev);
+
+ atomic_inc(&jme->link_changing);
+
+ jme_reset_link(jme);
+
+ return 0;
+}
+
static struct pci_device_id jme_pci_tbl[] = {
{ PCI_VDEVICE(JMICRON, 0x250) },
{ }
.id_table = jme_pci_tbl,
.probe = jme_init_one,
.remove = __devexit_p(jme_remove_one),
-#if 0
#ifdef CONFIG_PM
.suspend = jme_suspend,
.resume = jme_resume,
#endif /* CONFIG_PM */
-#endif
};
static int __init
MODULE_VERSION(DRV_VERSION);
MODULE_DEVICE_TABLE(pci, jme_pci_tbl);
-
git://bbs.cooldavid.org / jme.git / blobdiff