[PATCH net 1/3] dpaa_eth: use big endian accessors

From: Madalin Bucur
Date: Thu Dec 15 2016 - 08:49:50 EST

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In reply to: Madalin Bucur: "[PATCH net 3/3] MAINTAINERS: net: add entry for Freescale QorIQ DPAA Ethernet driver"
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From: Claudiu Manoil <claudiu.manoil@xxxxxxx>

Ensure correct access to the big endian QMan HW through proper
accessors.

Signed-off-by: Claudiu Manoil <claudiu.manoil@xxxxxxx>
Signed-off-by: Madalin Bucur <madalin.bucur@xxxxxxx>
---
drivers/net/ethernet/freescale/dpaa/dpaa_eth.c | 71 ++++++++++++++------------
1 file changed, 37 insertions(+), 34 deletions(-)

diff --git a/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c b/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c
index 3c48a84..624ba90 100644
--- a/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c
+++ b/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c
@@ -733,7 +733,7 @@ static int dpaa_eth_cgr_init(struct dpaa_priv *priv)
priv->cgr_data.cgr.cb = dpaa_eth_cgscn;

/* Enable Congestion State Change Notifications and CS taildrop */
- initcgr.we_mask = QM_CGR_WE_CSCN_EN | QM_CGR_WE_CS_THRES;
+ initcgr.we_mask = cpu_to_be16(QM_CGR_WE_CSCN_EN | QM_CGR_WE_CS_THRES);
initcgr.cgr.cscn_en = QM_CGR_EN;

/* Set different thresholds based on the MAC speed.
@@ -747,7 +747,7 @@ static int dpaa_eth_cgr_init(struct dpaa_priv *priv)
cs_th = DPAA_CS_THRESHOLD_1G;
qm_cgr_cs_thres_set64(&initcgr.cgr.cs_thres, cs_th, 1);

- initcgr.we_mask |= QM_CGR_WE_CSTD_EN;
+ initcgr.we_mask |= cpu_to_be16(QM_CGR_WE_CSTD_EN);
initcgr.cgr.cstd_en = QM_CGR_EN;

err = qman_create_cgr(&priv->cgr_data.cgr, QMAN_CGR_FLAG_USE_INIT,
@@ -896,18 +896,18 @@ static int dpaa_fq_init(struct dpaa_fq *dpaa_fq, bool td_enable)
if (dpaa_fq->init) {
memset(&initfq, 0, sizeof(initfq));

- initfq.we_mask = QM_INITFQ_WE_FQCTRL;
+ initfq.we_mask = cpu_to_be16(QM_INITFQ_WE_FQCTRL);
/* Note: we may get to keep an empty FQ in cache */
- initfq.fqd.fq_ctrl = QM_FQCTRL_PREFERINCACHE;
+ initfq.fqd.fq_ctrl = cpu_to_be16(QM_FQCTRL_PREFERINCACHE);

/* Try to reduce the number of portal interrupts for
* Tx Confirmation FQs.
*/
if (dpaa_fq->fq_type == FQ_TYPE_TX_CONFIRM)
- initfq.fqd.fq_ctrl |= QM_FQCTRL_HOLDACTIVE;
+ initfq.fqd.fq_ctrl |= cpu_to_be16(QM_FQCTRL_HOLDACTIVE);

/* FQ placement */
- initfq.we_mask |= QM_INITFQ_WE_DESTWQ;
+ initfq.we_mask |= cpu_to_be16(QM_INITFQ_WE_DESTWQ);

qm_fqd_set_destwq(&initfq.fqd, dpaa_fq->channel, dpaa_fq->wq);

@@ -920,8 +920,8 @@ static int dpaa_fq_init(struct dpaa_fq *dpaa_fq, bool td_enable)
if (dpaa_fq->fq_type == FQ_TYPE_TX ||
dpaa_fq->fq_type == FQ_TYPE_TX_CONFIRM ||
dpaa_fq->fq_type == FQ_TYPE_TX_CONF_MQ) {
- initfq.we_mask |= QM_INITFQ_WE_CGID;
- initfq.fqd.fq_ctrl |= QM_FQCTRL_CGE;
+ initfq.we_mask |= cpu_to_be16(QM_INITFQ_WE_CGID);
+ initfq.fqd.fq_ctrl |= cpu_to_be16(QM_FQCTRL_CGE);
initfq.fqd.cgid = (u8)priv->cgr_data.cgr.cgrid;
/* Set a fixed overhead accounting, in an attempt to
* reduce the impact of fixed-size skb shells and the
@@ -932,7 +932,7 @@ static int dpaa_fq_init(struct dpaa_fq *dpaa_fq, bool td_enable)
* insufficient value, but even that is better than
* no overhead accounting at all.
*/
- initfq.we_mask |= QM_INITFQ_WE_OAC;
+ initfq.we_mask |= cpu_to_be16(QM_INITFQ_WE_OAC);
qm_fqd_set_oac(&initfq.fqd, QM_OAC_CG);
qm_fqd_set_oal(&initfq.fqd,
min(sizeof(struct sk_buff) +
@@ -941,9 +941,9 @@ static int dpaa_fq_init(struct dpaa_fq *dpaa_fq, bool td_enable)
}

if (td_enable) {
- initfq.we_mask |= QM_INITFQ_WE_TDTHRESH;
+ initfq.we_mask |= cpu_to_be16(QM_INITFQ_WE_TDTHRESH);
qm_fqd_set_taildrop(&initfq.fqd, DPAA_FQ_TD, 1);
- initfq.fqd.fq_ctrl = QM_FQCTRL_TDE;
+ initfq.fqd.fq_ctrl = cpu_to_be16(QM_FQCTRL_TDE);
}

if (dpaa_fq->fq_type == FQ_TYPE_TX) {
@@ -951,7 +951,8 @@ static int dpaa_fq_init(struct dpaa_fq *dpaa_fq, bool td_enable)
if (queue_id >= 0)
confq = priv->conf_fqs[queue_id];
if (confq) {
- initfq.we_mask |= QM_INITFQ_WE_CONTEXTA;
+ initfq.we_mask |=
+ cpu_to_be16(QM_INITFQ_WE_CONTEXTA);
/* ContextA: OVOM=1(use contextA2 bits instead of ICAD)
* A2V=1 (contextA A2 field is valid)
* A0V=1 (contextA A0 field is valid)
@@ -959,8 +960,8 @@ static int dpaa_fq_init(struct dpaa_fq *dpaa_fq, bool td_enable)
* ContextA A2: EBD=1 (deallocate buffers inside FMan)
* ContextB B0(ASPID): 0 (absolute Virtual Storage ID)
*/
- initfq.fqd.context_a.hi = 0x1e000000;
- initfq.fqd.context_a.lo = 0x80000000;
+ qm_fqd_context_a_set64(&initfq.fqd,
+ 0x1e00000080000000ULL);
}
}

@@ -968,13 +969,13 @@ static int dpaa_fq_init(struct dpaa_fq *dpaa_fq, bool td_enable)
if (priv->use_ingress_cgr &&
(dpaa_fq->fq_type == FQ_TYPE_RX_DEFAULT ||
dpaa_fq->fq_type == FQ_TYPE_RX_ERROR)) {
- initfq.we_mask |= QM_INITFQ_WE_CGID;
- initfq.fqd.fq_ctrl |= QM_FQCTRL_CGE;
+ initfq.we_mask |= cpu_to_be16(QM_INITFQ_WE_CGID);
+ initfq.fqd.fq_ctrl |= cpu_to_be16(QM_FQCTRL_CGE);
initfq.fqd.cgid = (u8)priv->ingress_cgr.cgrid;
/* Set a fixed overhead accounting, just like for the
* egress CGR.
*/
- initfq.we_mask |= QM_INITFQ_WE_OAC;
+ initfq.we_mask |= cpu_to_be16(QM_INITFQ_WE_OAC);
qm_fqd_set_oac(&initfq.fqd, QM_OAC_CG);
qm_fqd_set_oal(&initfq.fqd,
min(sizeof(struct sk_buff) +
@@ -984,9 +985,8 @@ static int dpaa_fq_init(struct dpaa_fq *dpaa_fq, bool td_enable)

/* Initialization common to all ingress queues */
if (dpaa_fq->flags & QMAN_FQ_FLAG_NO_ENQUEUE) {
- initfq.we_mask |= QM_INITFQ_WE_CONTEXTA;
- initfq.fqd.fq_ctrl |=
- QM_FQCTRL_HOLDACTIVE;
+ initfq.we_mask |= cpu_to_be16(QM_INITFQ_WE_CONTEXTA);
+ initfq.fqd.fq_ctrl |= cpu_to_be16(QM_FQCTRL_HOLDACTIVE);
initfq.fqd.context_a.stashing.exclusive =
QM_STASHING_EXCL_DATA | QM_STASHING_EXCL_CTX |
QM_STASHING_EXCL_ANNOTATION;
@@ -1350,7 +1350,7 @@ static int dpaa_enable_tx_csum(struct dpaa_priv *priv,
parse_result->l4_off = (u8)skb_transport_offset(skb);

/* Enable L3 (and L4, if TCP or UDP) HW checksum. */
- fd->cmd |= FM_FD_CMD_RPD | FM_FD_CMD_DTC;
+ fd->cmd |= cpu_to_be32(FM_FD_CMD_RPD | FM_FD_CMD_DTC);

/* On P1023 and similar platforms fd->cmd interpretation could
* be disabled by setting CONTEXT_A bit ICMD; currently this bit
@@ -1732,7 +1732,7 @@ static int skb_to_contig_fd(struct dpaa_priv *priv,

/* Fill in the rest of the FD fields */
qm_fd_set_contig(fd, priv->tx_headroom, skb->len);
- fd->cmd |= FM_FD_CMD_FCO;
+ fd->cmd |= cpu_to_be32(FM_FD_CMD_FCO);

/* Map the entire buffer size that may be seen by FMan, but no more */
addr = dma_map_single(dev, skbh,
@@ -1840,7 +1840,7 @@ static int skb_to_sg_fd(struct dpaa_priv *priv,
}

fd->bpid = FSL_DPAA_BPID_INV;
- fd->cmd |= FM_FD_CMD_FCO;
+ fd->cmd |= cpu_to_be32(FM_FD_CMD_FCO);
qm_fd_addr_set64(fd, addr);

return 0;
@@ -1867,7 +1867,7 @@ static inline int dpaa_xmit(struct dpaa_priv *priv,

egress_fq = priv->egress_fqs[queue];
if (fd->bpid == FSL_DPAA_BPID_INV)
- fd->cmd |= qman_fq_fqid(priv->conf_fqs[queue]);
+ fd->cmd |= cpu_to_be32(qman_fq_fqid(priv->conf_fqs[queue]));

/* Trace this Tx fd */
trace_dpaa_tx_fd(priv->net_dev, egress_fq, fd);
@@ -1960,17 +1960,17 @@ static void dpaa_rx_error(struct net_device *net_dev,
{
if (net_ratelimit())
netif_err(priv, hw, net_dev, "Err FD status = 0x%08x\n",
- fd->status & FM_FD_STAT_RX_ERRORS);
+ be32_to_cpu(fd->status) & FM_FD_STAT_RX_ERRORS);

percpu_priv->stats.rx_errors++;

- if (fd->status & FM_FD_ERR_DMA)
+ if (be32_to_cpu(fd->status) & FM_FD_ERR_DMA)
percpu_priv->rx_errors.dme++;
- if (fd->status & FM_FD_ERR_PHYSICAL)
+ if (be32_to_cpu(fd->status) & FM_FD_ERR_PHYSICAL)
percpu_priv->rx_errors.fpe++;
- if (fd->status & FM_FD_ERR_SIZE)
+ if (be32_to_cpu(fd->status) & FM_FD_ERR_SIZE)
percpu_priv->rx_errors.fse++;
- if (fd->status & FM_FD_ERR_PRS_HDR_ERR)
+ if (be32_to_cpu(fd->status) & FM_FD_ERR_PRS_HDR_ERR)
percpu_priv->rx_errors.phe++;

dpaa_fd_release(net_dev, fd);
@@ -1986,7 +1986,7 @@ static void dpaa_tx_error(struct net_device *net_dev,

if (net_ratelimit())
netif_warn(priv, hw, net_dev, "FD status = 0x%08x\n",
- fd->status & FM_FD_STAT_TX_ERRORS);
+ be32_to_cpu(fd->status) & FM_FD_STAT_TX_ERRORS);

percpu_priv->stats.tx_errors++;

@@ -2020,10 +2020,11 @@ static void dpaa_tx_conf(struct net_device *net_dev,
{
struct sk_buff *skb;

- if (unlikely(fd->status & FM_FD_STAT_TX_ERRORS) != 0) {
+ if (unlikely(be32_to_cpu(fd->status) & FM_FD_STAT_TX_ERRORS)) {
if (net_ratelimit())
netif_warn(priv, hw, net_dev, "FD status = 0x%08x\n",
- fd->status & FM_FD_STAT_TX_ERRORS);
+ be32_to_cpu(fd->status) &
+ FM_FD_STAT_TX_ERRORS);

percpu_priv->stats.tx_errors++;
}
@@ -2100,6 +2101,8 @@ static enum qman_cb_dqrr_result rx_default_dqrr(struct qman_portal *portal,
struct sk_buff *skb;
int *count_ptr;

+ fd_status = be32_to_cpu(fd->status);
+ fd_format = qm_fd_get_format(fd);
net_dev = ((struct dpaa_fq *)fq)->net_dev;
priv = netdev_priv(net_dev);
dpaa_bp = dpaa_bpid2pool(dq->fd.bpid);
@@ -2417,12 +2420,12 @@ static int dpaa_ingress_cgr_init(struct dpaa_priv *priv)
}

/* Enable CS TD, but disable Congestion State Change Notifications. */
- initcgr.we_mask = QM_CGR_WE_CS_THRES;
+ initcgr.we_mask = cpu_to_be16(QM_CGR_WE_CS_THRES);
initcgr.cgr.cscn_en = QM_CGR_EN;
cs_th = DPAA_INGRESS_CS_THRESHOLD;
qm_cgr_cs_thres_set64(&initcgr.cgr.cs_thres, cs_th, 1);

- initcgr.we_mask |= QM_CGR_WE_CSTD_EN;
+ initcgr.we_mask |= cpu_to_be16(QM_CGR_WE_CSTD_EN);
initcgr.cgr.cstd_en = QM_CGR_EN;

/* This CGR will be associated with the SWP affined to the current CPU.
--
2.1.0

Next message: Olaf Hering: "Re: move hyperv CHANNELMSG_UNLOAD from crashed kernel to kdump kernel"
Previous message: tip-bot for Marcelo Tosatti: "[tip:x86/cache] Documentation, x86, resctrl: Recommend locking for resctrlfs"
In reply to: Madalin Bucur: "[PATCH net 3/3] MAINTAINERS: net: add entry for Freescale QorIQ DPAA Ethernet driver"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]