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Merge branch 'xgene-fixes'

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Iyappan Subramanian says:

====================
drivers: net: xgene: Bug fixes

This patch set addresses the following bug fixes that were found during testing.

  1. IPv4 forward test crash
    - drivers: net: xgene: fix IPv4 forward crash

  2. Sharing of irqs
    - drivers: net: xgene: fix sharing of irqs

  3. Ununiform latency across queues
    - drivers: net: xgene: fix ununiform latency across queues

  4. Fix statistics counters race condition
    - drivers: net: xgene: fix statistics counters race condition

  5. Correcting register offset and field lengths
    - drivers: net: xgene: fix register offset

v2: Address review comments from v1
- Defer TSO fix, and reposting all other patches from v1

v1:
- Initial version
====================

Signed-off-by: Iyappan Subramanian <isubramanian@apm.com>

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2016-05-13 21:12:07 -04:00
commit b915065862
7 changed files with 94 additions and 41 deletions
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11
drivers/net/ethernet/apm/xgene/xgene_enet_cle.c
View file

@ -43,6 +43,7 @@ static void xgene_cle_idt_to_hw(u32 dstqid, u32 fpsel,
static void xgene_cle_dbptr_to_hw(struct xgene_enet_pdata *pdata,
struct xgene_cle_dbptr *dbptr, u32 *buf)
{
buf[0] = SET_VAL(CLE_DROP, dbptr->drop);
buf[4] = SET_VAL(CLE_FPSEL, dbptr->fpsel) |
SET_VAL(CLE_DSTQIDL, dbptr->dstqid);
@ -412,7 +413,7 @@ static int xgene_enet_cle_init(struct xgene_enet_pdata *pdata)
.branch = {
{
/* IPV4 */
.valid = 0,
.valid = 1,
.next_packet_pointer = 22,
.jump_bw = JMP_FW,
.jump_rel = JMP_ABS,
@ -420,7 +421,7 @@ static int xgene_enet_cle_init(struct xgene_enet_pdata *pdata)
.next_node = PKT_PROT_NODE,
.next_branch = 0,
.data = 0x8,
.mask = 0xffff
.mask = 0x0
},
{
.valid = 0,
@ -456,7 +457,7 @@ static int xgene_enet_cle_init(struct xgene_enet_pdata *pdata)
.next_node = RSS_IPV4_TCP_NODE,
.next_branch = 0,
.data = 0x0600,
.mask = 0xffff
.mask = 0x00ff
},
{
/* UDP */
@ -468,7 +469,7 @@ static int xgene_enet_cle_init(struct xgene_enet_pdata *pdata)
.next_node = RSS_IPV4_UDP_NODE,
.next_branch = 0,
.data = 0x1100,
.mask = 0xffff
.mask = 0x00ff
},
{
.valid = 0,
@ -642,7 +643,7 @@ static int xgene_enet_cle_init(struct xgene_enet_pdata *pdata)
{
/* TCP DST Port */
.valid = 0,
.next_packet_pointer = 256,
.next_packet_pointer = 258,
.jump_bw = JMP_FW,
.jump_rel = JMP_ABS,
.operation = EQT,

2
drivers/net/ethernet/apm/xgene/xgene_enet_cle.h
View file

@ -83,6 +83,8 @@
#define CLE_TYPE_POS 0
#define CLE_TYPE_LEN 2
#define CLE_DROP_POS 28
#define CLE_DROP_LEN 1
#define CLE_DSTQIDL_POS 25
#define CLE_DSTQIDL_LEN 7
#define CLE_DSTQIDH_POS 0

19
drivers/net/ethernet/apm/xgene/xgene_enet_hw.c
View file

@ -219,27 +219,30 @@ void xgene_enet_parse_error(struct xgene_enet_desc_ring *ring,
struct xgene_enet_pdata *pdata,
enum xgene_enet_err_code status)
{
struct rtnl_link_stats64 *stats = &pdata->stats;
switch (status) {
case INGRESS_CRC:
stats->rx_crc_errors++;
ring->rx_crc_errors++;
ring->rx_dropped++;
break;
case INGRESS_CHECKSUM:
case INGRESS_CHECKSUM_COMPUTE:
stats->rx_errors++;
ring->rx_errors++;
ring->rx_dropped++;
break;
case INGRESS_TRUNC_FRAME:
stats->rx_frame_errors++;
ring->rx_frame_errors++;
ring->rx_dropped++;
break;
case INGRESS_PKT_LEN:
stats->rx_length_errors++;
ring->rx_length_errors++;
ring->rx_dropped++;
break;
case INGRESS_PKT_UNDER:
stats->rx_frame_errors++;
ring->rx_frame_errors++;
ring->rx_dropped++;
break;
case INGRESS_FIFO_OVERRUN:
stats->rx_fifo_errors++;
ring->rx_fifo_errors++;
break;
default:
break;

8
drivers/net/ethernet/apm/xgene/xgene_enet_hw.h
View file

@ -86,7 +86,7 @@ enum xgene_enet_rm {
#define RINGADDRL_POS 5
#define RINGADDRL_LEN 27
#define RINGADDRH_POS 0
#define RINGADDRH_LEN 6
#define RINGADDRH_LEN 7
#define RINGSIZE_POS 23
#define RINGSIZE_LEN 3
#define RINGTYPE_POS 19
@ -94,9 +94,9 @@ enum xgene_enet_rm {
#define RINGMODE_POS 20
#define RINGMODE_LEN 3
#define RECOMTIMEOUTL_POS 28
#define RECOMTIMEOUTL_LEN 3
#define RECOMTIMEOUTL_LEN 4
#define RECOMTIMEOUTH_POS 0
#define RECOMTIMEOUTH_LEN 2
#define RECOMTIMEOUTH_LEN 3
#define NUMMSGSINQ_POS 1
#define NUMMSGSINQ_LEN 16
#define ACCEPTLERR BIT(19)
@ -201,6 +201,8 @@ enum xgene_enet_rm {
#define USERINFO_LEN 32
#define FPQNUM_POS 32
#define FPQNUM_LEN 12
#define ELERR_POS 46
#define ELERR_LEN 2
#define NV_POS 50
#define NV_LEN 1
#define LL_POS 51

75
drivers/net/ethernet/apm/xgene/xgene_enet_main.c
View file

@ -443,8 +443,8 @@ static netdev_tx_t xgene_enet_start_xmit(struct sk_buff *skb,
skb_tx_timestamp(skb);
pdata->stats.tx_packets++;
pdata->stats.tx_bytes += skb->len;
tx_ring->tx_packets++;
tx_ring->tx_bytes += skb->len;
pdata->ring_ops->wr_cmd(tx_ring, count);
return NETDEV_TX_OK;
@ -483,12 +483,12 @@ static int xgene_enet_rx_frame(struct xgene_enet_desc_ring *rx_ring,
skb = buf_pool->rx_skb[skb_index];
/* checking for error */
status = GET_VAL(LERR, le64_to_cpu(raw_desc->m0));
status = (GET_VAL(ELERR, le64_to_cpu(raw_desc->m0)) << LERR_LEN) ||
GET_VAL(LERR, le64_to_cpu(raw_desc->m0));
if (unlikely(status > 2)) {
dev_kfree_skb_any(skb);
xgene_enet_parse_error(rx_ring, netdev_priv(rx_ring->ndev),
status);
pdata->stats.rx_dropped++;
ret = -EIO;
goto out;
}
@ -506,8 +506,8 @@ static int xgene_enet_rx_frame(struct xgene_enet_desc_ring *rx_ring,
xgene_enet_skip_csum(skb);
}
pdata->stats.rx_packets++;
pdata->stats.rx_bytes += datalen;
rx_ring->rx_packets++;
rx_ring->rx_bytes += datalen;
napi_gro_receive(&rx_ring->napi, skb);
out:
if (--rx_ring->nbufpool == 0) {
@ -630,7 +630,7 @@ static int xgene_enet_register_irq(struct net_device *ndev)
ring = pdata->rx_ring[i];
irq_set_status_flags(ring->irq, IRQ_DISABLE_UNLAZY);
ret = devm_request_irq(dev, ring->irq, xgene_enet_rx_irq,
IRQF_SHARED, ring->irq_name, ring);
0, ring->irq_name, ring);
if (ret) {
netdev_err(ndev, "Failed to request irq %s\n",
ring->irq_name);
@ -641,7 +641,7 @@ static int xgene_enet_register_irq(struct net_device *ndev)
ring = pdata->tx_ring[i]->cp_ring;
irq_set_status_flags(ring->irq, IRQ_DISABLE_UNLAZY);
ret = devm_request_irq(dev, ring->irq, xgene_enet_rx_irq,
IRQF_SHARED, ring->irq_name, ring);
0, ring->irq_name, ring);
if (ret) {
netdev_err(ndev, "Failed to request irq %s\n",
ring->irq_name);
@ -1114,12 +1114,31 @@ static struct rtnl_link_stats64 *xgene_enet_get_stats64(
{
struct xgene_enet_pdata *pdata = netdev_priv(ndev);
struct rtnl_link_stats64 *stats = &pdata->stats;
struct xgene_enet_desc_ring *ring;
int i;
stats->rx_errors += stats->rx_length_errors +
stats->rx_crc_errors +
stats->rx_frame_errors +
stats->rx_fifo_errors;
memcpy(storage, &pdata->stats, sizeof(struct rtnl_link_stats64));
memset(stats, 0, sizeof(struct rtnl_link_stats64));
for (i = 0; i < pdata->txq_cnt; i++) {
ring = pdata->tx_ring[i];
if (ring) {
stats->tx_packets += ring->tx_packets;
stats->tx_bytes += ring->tx_bytes;
}
}
for (i = 0; i < pdata->rxq_cnt; i++) {
ring = pdata->rx_ring[i];
if (ring) {
stats->rx_packets += ring->rx_packets;
stats->rx_bytes += ring->rx_bytes;
stats->rx_errors += ring->rx_length_errors +
ring->rx_crc_errors +
ring->rx_frame_errors +
ring->rx_fifo_errors;
stats->rx_dropped += ring->rx_dropped;
}
}
memcpy(storage, stats, sizeof(struct rtnl_link_stats64));
return storage;
}
@ -1234,6 +1253,13 @@ static int xgene_enet_get_irqs(struct xgene_enet_pdata *pdata)
for (i = 0; i < max_irqs; i++) {
ret = platform_get_irq(pdev, i);
if (ret <= 0) {
if (pdata->phy_mode == PHY_INTERFACE_MODE_XGMII) {
max_irqs = i;
pdata->rxq_cnt = max_irqs / 2;
pdata->txq_cnt = max_irqs / 2;
pdata->cq_cnt = max_irqs / 2;
break;
}
dev_err(dev, "Unable to get ENET IRQ\n");
ret = ret ? : -ENXIO;
return ret;
@ -1437,19 +1463,28 @@ static void xgene_enet_setup_ops(struct xgene_enet_pdata *pdata)
pdata->port_ops = &xgene_xgport_ops;
pdata->cle_ops = &xgene_cle3in_ops;
pdata->rm = RM0;
pdata->rxq_cnt = XGENE_NUM_RX_RING;
pdata->txq_cnt = XGENE_NUM_TX_RING;
pdata->cq_cnt = XGENE_NUM_TXC_RING;
if (!pdata->rxq_cnt) {
pdata->rxq_cnt = XGENE_NUM_RX_RING;
pdata->txq_cnt = XGENE_NUM_TX_RING;
pdata->cq_cnt = XGENE_NUM_TXC_RING;
}
break;
}
if (pdata->enet_id == XGENE_ENET1) {
switch (pdata->port_id) {
case 0:
pdata->cpu_bufnum = START_CPU_BUFNUM_0;
pdata->eth_bufnum = START_ETH_BUFNUM_0;
pdata->bp_bufnum = START_BP_BUFNUM_0;
pdata->ring_num = START_RING_NUM_0;
if (pdata->phy_mode == PHY_INTERFACE_MODE_XGMII) {
pdata->cpu_bufnum = X2_START_CPU_BUFNUM_0;
pdata->eth_bufnum = X2_START_ETH_BUFNUM_0;
pdata->bp_bufnum = X2_START_BP_BUFNUM_0;
pdata->ring_num = START_RING_NUM_0;
} else {
pdata->cpu_bufnum = START_CPU_BUFNUM_0;
pdata->eth_bufnum = START_ETH_BUFNUM_0;
pdata->bp_bufnum = START_BP_BUFNUM_0;
pdata->ring_num = START_RING_NUM_0;
}
break;
case 1:
if (pdata->phy_mode == PHY_INTERFACE_MODE_XGMII) {

18
drivers/net/ethernet/apm/xgene/xgene_enet_main.h
View file

@ -49,10 +49,10 @@
#define XGENE_ENET_MSS 1448
#define XGENE_MIN_ENET_FRAME_SIZE 60
#define XGENE_MAX_ENET_IRQ 8
#define XGENE_NUM_RX_RING 4
#define XGENE_NUM_TX_RING 4
#define XGENE_NUM_TXC_RING 4
#define XGENE_MAX_ENET_IRQ 16
#define XGENE_NUM_RX_RING 8
#define XGENE_NUM_TX_RING 8
#define XGENE_NUM_TXC_RING 8
#define START_CPU_BUFNUM_0 0
#define START_ETH_BUFNUM_0 2
@ -121,6 +121,16 @@ struct xgene_enet_desc_ring {
struct xgene_enet_raw_desc16 *raw_desc16;
};
__le64 *exp_bufs;
u64 tx_packets;
u64 tx_bytes;
u64 rx_packets;
u64 rx_bytes;
u64 rx_dropped;
u64 rx_errors;
u64 rx_length_errors;
u64 rx_crc_errors;
u64 rx_frame_errors;
u64 rx_fifo_errors;
};
struct xgene_mac_ops {

2
drivers/net/ethernet/apm/xgene/xgene_enet_sgmac.h
View file

@ -33,7 +33,7 @@
#define LINK_STATUS BIT(2)
#define LINK_UP BIT(15)
#define MPA_IDLE_WITH_QMI_EMPTY BIT(12)
#define SG_RX_DV_GATE_REG_0_ADDR 0x0dfc
#define SG_RX_DV_GATE_REG_0_ADDR 0x05fc
extern const struct xgene_mac_ops xgene_sgmac_ops;
extern const struct xgene_port_ops xgene_sgport_ops;