static void dwmac1000_dma_operation_mode(void __iomem *ioaddr, int channel,
int txmode, int rxmode)
{
u32 csr6 = readl(ioaddr + (channel * 0x100) + DMA_CONTROL);
if (txmode == SF_DMA_MODE) {
CHIP_DBG(KERN_DEBUG "GMAC: enable TX store and forward mode\n");
/* Transmit COE type 2 cannot be done in cut-through mode. */
csr6 |= DMA_CONTROL_TSF;
/* Operating on second frame increase the performance
* especially when transmit store-and-forward is used.*/
/* TOE don't support "Operating on second frame",
* so if tx_coe enable, we should clear this bit.
*/
csr6 &= ~DMA_CONTROL_OSF;
} else {
CHIP_DBG(KERN_DEBUG "GMAC: disabling TX store and forward mode"
" (threshold = %d)\n", txmode);
csr6 &= ~DMA_CONTROL_TSF;
csr6 &= DMA_CONTROL_TC_TX_MASK;
/* Set the transmit threshold */
if (txmode <= 32)
csr6 |= DMA_CONTROL_TTC_32;
else if (txmode <= 64)
csr6 |= DMA_CONTROL_TTC_64;
else if (txmode <= 128)
csr6 |= DMA_CONTROL_TTC_128;
else if (txmode <= 192)
csr6 |= DMA_CONTROL_TTC_192;
else
csr6 |= DMA_CONTROL_TTC_256;
}
if (rxmode == SF_DMA_MODE) {
CHIP_DBG(KERN_DEBUG "GMAC: enable RX store and forward mode\n");
csr6 |= DMA_CONTROL_RSF;
/* Disable flushing of received frames, required by TNK */
csr6 |= DMA_CONTROL_DFF;
} else {
CHIP_DBG(KERN_DEBUG "GMAC: disabling RX store and forward mode"
" (threshold = %d)\n", rxmode);
csr6 &= ~DMA_CONTROL_RSF;
csr6 &= DMA_CONTROL_TC_RX_MASK;
if (rxmode <= 32)
csr6 |= DMA_CONTROL_RTC_32;
else if (rxmode <= 64)
csr6 |= DMA_CONTROL_RTC_64;
else if (rxmode <= 96)
csr6 |= DMA_CONTROL_RTC_96;
else
csr6 |= DMA_CONTROL_RTC_128;
}
writel(csr6, ioaddr + (channel * 0x100) + DMA_CONTROL);
}
static void dwmac1000_dma_operation_mode(void __iomem *ioaddr, int txmode,
int rxmode)
{
u32 csr6 = readl(ioaddr + DMA_CONTROL);
if (txmode == SF_DMA_MODE) {
CHIP_DBG(KERN_DEBUG "GMAC: enable TX store and forward mode\n");
/* Transmit COE type 2 cannot be done in cut-through mode. */
csr6 |= DMA_CONTROL_TSF;
/* Operating on second frame increase the performance
* especially when transmit store-and-forward is used.*/
csr6 |= DMA_CONTROL_OSF;
} else {
CHIP_DBG(KERN_DEBUG "GMAC: disabling TX store and forward mode"
" (threshold = %d)\n", txmode);
csr6 &= ~DMA_CONTROL_TSF;
csr6 &= DMA_CONTROL_TC_TX_MASK;
/* Set the transmit threshold */
if (txmode <= 32)
csr6 |= DMA_CONTROL_TTC_32;
else if (txmode <= 64)
csr6 |= DMA_CONTROL_TTC_64;
else if (txmode <= 128)
csr6 |= DMA_CONTROL_TTC_128;
else if (txmode <= 192)
csr6 |= DMA_CONTROL_TTC_192;
else
csr6 |= DMA_CONTROL_TTC_256;
}
if (rxmode == SF_DMA_MODE) {
CHIP_DBG(KERN_DEBUG "GMAC: enable RX store and forward mode\n");
csr6 |= DMA_CONTROL_RSF;
} else {
CHIP_DBG(KERN_DEBUG "GMAC: disabling RX store and forward mode"
" (threshold = %d)\n", rxmode);
csr6 &= ~DMA_CONTROL_RSF;
csr6 &= DMA_CONTROL_TC_RX_MASK;
if (rxmode <= 32)
csr6 |= DMA_CONTROL_RTC_32;
else if (rxmode <= 64)
csr6 |= DMA_CONTROL_RTC_64;
else if (rxmode <= 96)
csr6 |= DMA_CONTROL_RTC_96;
else
csr6 |= DMA_CONTROL_RTC_128;
}
writel(csr6, ioaddr + DMA_CONTROL);
}
static void dwmac1000_set_filter(struct net_device *dev, int id)
{
void __iomem *ioaddr = (void __iomem *) dev->base_addr;
unsigned int value = 0;
unsigned int perfect_addr_number;
CHIP_DBG(KERN_INFO "%s: # mcasts %d, # unicast %d\n",
__func__, netdev_mc_count(dev), netdev_uc_count(dev));
if (dev->flags & IFF_PROMISC)
value = GMAC_FRAME_FILTER_PR;
else if ((netdev_mc_count(dev) > HASH_TABLE_SIZE)
|| (dev->flags & IFF_ALLMULTI)) {
value = GMAC_FRAME_FILTER_PM; /* pass all multi */
writel(0xffffffff, ioaddr + GMAC_HASH_HIGH);
writel(0xffffffff, ioaddr + GMAC_HASH_LOW);
} else if (!netdev_mc_empty(dev)) {
u32 mc_filter[2];
struct netdev_hw_addr *ha;
/* Hash filter for multicast */
value = GMAC_FRAME_FILTER_HMC;
memset(mc_filter, 0, sizeof(mc_filter));
netdev_for_each_mc_addr(ha, dev) {
/* The upper 6 bits of the calculated CRC are used to
index the contens of the hash table */
int bit_nr =
bitrev32(~crc32_le(~0, ha->addr, 6)) >> 26;
/* The most significant bit determines the register to
* use (H/L) while the other 5 bits determine the bit
* within the register. */
mc_filter[bit_nr >> 5] |= 1 << (bit_nr & 31);
}
static int enh_desc_coe_rdes0(int ipc_err, int type, int payload_err)
{
int ret = good_frame;
u32 status = (type << 2 | ipc_err << 1 | payload_err) & 0x7;
/* bits 5 7 0 | Frame status
* ----------------------------------------------------------
* 0 0 0 | IEEE 802.3 Type frame (length < 1536 octects)
* 1 0 0 | IPv4/6 No CSUM errorS.
* 1 0 1 | IPv4/6 CSUM PAYLOAD error
* 1 1 0 | IPv4/6 CSUM IP HR error
* 1 1 1 | IPv4/6 IP PAYLOAD AND HEADER errorS
* 0 0 1 | IPv4/6 unsupported IP PAYLOAD
* 0 1 1 | COE bypassed.. no IPv4/6 frame
* 0 1 0 | Reserved.
*/
if (status == 0x0) {
CHIP_DBG(KERN_INFO "RX Des0 status: IEEE 802.3 Type frame.\n");
ret = good_frame;
} else if (status == 0x4) {
CHIP_DBG(KERN_INFO "RX Des0 status: IPv4/6 No CSUM errorS.\n");
ret = good_frame;
} else if (status == 0x5) {
CHIP_DBG(KERN_ERR "RX Des0 status: IPv4/6 Payload Error.\n");
ret = csum_none;
} else if (status == 0x6) {
CHIP_DBG(KERN_ERR "RX Des0 status: IPv4/6 Header Error.\n");
ret = csum_none;
} else if (status == 0x7) {
CHIP_DBG(KERN_ERR
"RX Des0 status: IPv4/6 Header and Payload Error.\n");
ret = csum_none;
} else if (status == 0x1) {
CHIP_DBG(KERN_ERR
"RX Des0 status: IPv4/6 unsupported IP PAYLOAD.\n");
ret = discard_frame;
} else if (status == 0x3) {
CHIP_DBG(KERN_ERR "RX Des0 status: No IPv4, IPv6 frame.\n");
ret = discard_frame;
}
return ret;
}
static int ndesc_get_tx_status(void *data, struct stmmac_extra_stats *x,
struct dma_desc *p, void __iomem *ioaddr)
{
int ret = 0;
struct net_device_stats *stats = (struct net_device_stats *)data;
if (unlikely(p->des01.tx.error_summary)) {
if (unlikely(p->des01.tx.underflow_error)) {
x->tx_underflow++;
stats->tx_fifo_errors++;
}
if (unlikely(p->des01.tx.no_carrier)) {
x->tx_carrier++;
stats->tx_carrier_errors++;
}
if (unlikely(p->des01.tx.loss_carrier)) {
x->tx_losscarrier++;
stats->tx_carrier_errors++;
}
if (unlikely((p->des01.tx.excessive_deferral) ||
(p->des01.tx.excessive_collisions) ||
(p->des01.tx.late_collision)))
stats->collisions += p->des01.tx.collision_count;
ret = -1;
}
if (p->des01.etx.vlan_frame) {
CHIP_DBG(KERN_INFO "GMAC TX status: VLAN frame\n");
x->tx_vlan++;
}
if (unlikely(p->des01.tx.deferred))
x->tx_deferred++;
return ret;
}
static int enh_desc_get_tx_status(void *data, struct stmmac_extra_stats *x,
struct dma_desc *p, unsigned long ioaddr)
{
int ret = 0;
struct net_device_stats *stats = (struct net_device_stats *)data;
if (unlikely(p->des01.etx.error_summary)) {
CHIP_DBG(KERN_ERR "GMAC TX error... 0x%08x\n", p->des01.etx);
if (unlikely(p->des01.etx.jabber_timeout)) {
CHIP_DBG(KERN_ERR "\tjabber_timeout error\n");
x->tx_jabber++;
}
if (unlikely(p->des01.etx.frame_flushed)) {
CHIP_DBG(KERN_ERR "\tframe_flushed error\n");
x->tx_frame_flushed++;
dwmac_dma_flush_tx_fifo(ioaddr);
}
if (unlikely(p->des01.etx.loss_carrier)) {
CHIP_DBG(KERN_ERR "\tloss_carrier error\n");
x->tx_losscarrier++;
stats->tx_carrier_errors++;
}
if (unlikely(p->des01.etx.no_carrier)) {
CHIP_DBG(KERN_ERR "\tno_carrier error\n");
x->tx_carrier++;
stats->tx_carrier_errors++;
}
if (unlikely(p->des01.etx.late_collision)) {
CHIP_DBG(KERN_ERR "\tlate_collision error\n");
stats->collisions += p->des01.etx.collision_count;
}
if (unlikely(p->des01.etx.excessive_collisions)) {
CHIP_DBG(KERN_ERR "\texcessive_collisions\n");
stats->collisions += p->des01.etx.collision_count;
}
if (unlikely(p->des01.etx.excessive_deferral)) {
CHIP_DBG(KERN_INFO "\texcessive tx_deferral\n");
x->tx_deferred++;
}
if (unlikely(p->des01.etx.underflow_error)) {
CHIP_DBG(KERN_ERR "\tunderflow error\n");
dwmac_dma_flush_tx_fifo(ioaddr);
x->tx_underflow++;
}
if (unlikely(p->des01.etx.ip_header_error)) {
CHIP_DBG(KERN_ERR "\tTX IP header csum error\n");
x->tx_ip_header_error++;
}
if (unlikely(p->des01.etx.payload_error)) {
CHIP_DBG(KERN_ERR "\tAddr/Payload csum error\n");
x->tx_payload_error++;
dwmac_dma_flush_tx_fifo(ioaddr);
}
ret = -1;
}
if (unlikely(p->des01.etx.deferred)) {
CHIP_DBG(KERN_INFO "GMAC TX status: tx deferred\n");
x->tx_deferred++;
}
#ifdef STMMAC_VLAN_TAG_USED
if (p->des01.etx.vlan_frame) {
CHIP_DBG(KERN_INFO "GMAC TX status: VLAN frame\n");
x->tx_vlan++;
}
#endif
return ret;
}
static int enh_desc_get_rx_status(void *data, struct stmmac_extra_stats *x,
struct dma_desc *p)
{
int ret = good_frame;
struct net_device_stats *stats = (struct net_device_stats *)data;
if (unlikely(p->des01.erx.error_summary)) {
CHIP_DBG(KERN_ERR "GMAC RX Error Summary 0x%08x\n",
p->des01.erx);
if (unlikely(p->des01.erx.descriptor_error)) {
CHIP_DBG(KERN_ERR "\tdescriptor error\n");
x->rx_desc++;
stats->rx_length_errors++;
}
if (unlikely(p->des01.erx.overflow_error)) {
CHIP_DBG(KERN_ERR "\toverflow error\n");
x->rx_gmac_overflow++;
}
if (unlikely(p->des01.erx.ipc_csum_error))
CHIP_DBG(KERN_ERR "\tIPC Csum Error/Giant frame\n");
if (unlikely(p->des01.erx.late_collision)) {
CHIP_DBG(KERN_ERR "\tlate_collision error\n");
stats->collisions++;
stats->collisions++;
}
if (unlikely(p->des01.erx.receive_watchdog)) {
CHIP_DBG(KERN_ERR "\treceive_watchdog error\n");
x->rx_watchdog++;
}
if (unlikely(p->des01.erx.error_gmii)) {
CHIP_DBG(KERN_ERR "\tReceive Error\n");
x->rx_mii++;
}
if (unlikely(p->des01.erx.crc_error)) {
CHIP_DBG(KERN_ERR "\tCRC error\n");
x->rx_crc++;
stats->rx_crc_errors++;
}
ret = discard_frame;
}
/* After a payload csum error, the ES bit is set.
* It doesn't match with the information reported into the databook.
* At any rate, we need to understand if the CSUM hw computation is ok
* and report this info to the upper layers. */
ret = enh_desc_coe_rdes0(p->des01.erx.ipc_csum_error,
p->des01.erx.frame_type, p->des01.erx.payload_csum_error);
if (unlikely(p->des01.erx.dribbling)) {
CHIP_DBG(KERN_ERR "GMAC RX: dribbling error\n");
ret = discard_frame;
}
if (unlikely(p->des01.erx.sa_filter_fail)) {
CHIP_DBG(KERN_ERR "GMAC RX : Source Address filter fail\n");
x->sa_rx_filter_fail++;
ret = discard_frame;
}
if (unlikely(p->des01.erx.da_filter_fail)) {
CHIP_DBG(KERN_ERR "GMAC RX : Dest Address filter fail\n");
x->da_rx_filter_fail++;
ret = discard_frame;
}
if (unlikely(p->des01.erx.length_error)) {
CHIP_DBG(KERN_ERR "GMAC RX: length_error error\n");
x->rx_length++;
ret = discard_frame;
}
#ifdef STMMAC_VLAN_TAG_USED
if (p->des01.erx.vlan_tag) {
CHIP_DBG(KERN_INFO "GMAC RX: VLAN frame tagged\n");
x->rx_vlan++;
}
#endif
return ret;
}