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net: enetc: cache accesses to &priv->si->hw

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The &priv->si->hw construct dereferences 2 pointers and makes lines
longer than they need to be, in turn making the code harder to read.

Replace &priv->si->hw accesses with a "hw" variable when there are 2 or
more accesses within a function that dereference this. This includes
loops, since &priv->si->hw is a loop invariant.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Vladimir Oltean 2022-09-28 12:52:02 +03:00 committed by Jakub Kicinski
parent a745c69783
commit 715bf2610f
3 changed files with 49 additions and 48 deletions
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28
drivers/net/ethernet/freescale/enetc/enetc.c
View File

@ -2116,13 +2116,14 @@ static void enetc_setup_rxbdr(struct enetc_hw *hw, struct enetc_bdr *rx_ring)
static void enetc_setup_bdrs(struct enetc_ndev_priv *priv)
{
struct enetc_hw *hw = &priv->si->hw;
int i;
for (i = 0; i < priv->num_tx_rings; i++)
enetc_setup_txbdr(&priv->si->hw, priv->tx_ring[i]);
enetc_setup_txbdr(hw, priv->tx_ring[i]);
for (i = 0; i < priv->num_rx_rings; i++)
enetc_setup_rxbdr(&priv->si->hw, priv->rx_ring[i]);
enetc_setup_rxbdr(hw, priv->rx_ring[i]);
}
static void enetc_clear_rxbdr(struct enetc_hw *hw, struct enetc_bdr *rx_ring)
@ -2155,13 +2156,14 @@ static void enetc_clear_txbdr(struct enetc_hw *hw, struct enetc_bdr *tx_ring)
static void enetc_clear_bdrs(struct enetc_ndev_priv *priv)
{
struct enetc_hw *hw = &priv->si->hw;
int i;
for (i = 0; i < priv->num_tx_rings; i++)
enetc_clear_txbdr(&priv->si->hw, priv->tx_ring[i]);
enetc_clear_txbdr(hw, priv->tx_ring[i]);
for (i = 0; i < priv->num_rx_rings; i++)
enetc_clear_rxbdr(&priv->si->hw, priv->rx_ring[i]);
enetc_clear_rxbdr(hw, priv->rx_ring[i]);
udelay(1);
}
@ -2169,13 +2171,13 @@ static void enetc_clear_bdrs(struct enetc_ndev_priv *priv)
static int enetc_setup_irqs(struct enetc_ndev_priv *priv)
{
struct pci_dev *pdev = priv->si->pdev;
struct enetc_hw *hw = &priv->si->hw;
int i, j, err;
for (i = 0; i < priv->bdr_int_num; i++) {
int irq = pci_irq_vector(pdev, ENETC_BDR_INT_BASE_IDX + i);
struct enetc_int_vector *v = priv->int_vector[i];
int entry = ENETC_BDR_INT_BASE_IDX + i;
struct enetc_hw *hw = &priv->si->hw;
snprintf(v->name, sizeof(v->name), "%s-rxtx%d",
priv->ndev->name, i);
@ -2263,13 +2265,14 @@ static void enetc_setup_interrupts(struct enetc_ndev_priv *priv)
static void enetc_clear_interrupts(struct enetc_ndev_priv *priv)
{
struct enetc_hw *hw = &priv->si->hw;
int i;
for (i = 0; i < priv->num_tx_rings; i++)
enetc_txbdr_wr(&priv->si->hw, i, ENETC_TBIER, 0);
enetc_txbdr_wr(hw, i, ENETC_TBIER, 0);
for (i = 0; i < priv->num_rx_rings; i++)
enetc_rxbdr_wr(&priv->si->hw, i, ENETC_RBIER, 0);
enetc_rxbdr_wr(hw, i, ENETC_RBIER, 0);
}
static int enetc_phylink_connect(struct net_device *ndev)
@ -2436,6 +2439,7 @@ int enetc_setup_tc_mqprio(struct net_device *ndev, void *type_data)
{
struct enetc_ndev_priv *priv = netdev_priv(ndev);
struct tc_mqprio_qopt *mqprio = type_data;
struct enetc_hw *hw = &priv->si->hw;
struct enetc_bdr *tx_ring;
int num_stack_tx_queues;
u8 num_tc;
@ -2452,7 +2456,7 @@ int enetc_setup_tc_mqprio(struct net_device *ndev, void *type_data)
/* Reset all ring priorities to 0 */
for (i = 0; i < priv->num_tx_rings; i++) {
tx_ring = priv->tx_ring[i];
enetc_set_bdr_prio(&priv->si->hw, tx_ring->index, 0);
enetc_set_bdr_prio(hw, tx_ring->index, 0);
}
return 0;
@ -2471,7 +2475,7 @@ int enetc_setup_tc_mqprio(struct net_device *ndev, void *type_data)
*/
for (i = 0; i < num_tc; i++) {
tx_ring = priv->tx_ring[i];
enetc_set_bdr_prio(&priv->si->hw, tx_ring->index, i);
enetc_set_bdr_prio(hw, tx_ring->index, i);
}
/* Reset the number of netdev queues based on the TC count */
@ -2584,19 +2588,21 @@ static int enetc_set_rss(struct net_device *ndev, int en)
static void enetc_enable_rxvlan(struct net_device *ndev, bool en)
{
struct enetc_ndev_priv *priv = netdev_priv(ndev);
struct enetc_hw *hw = &priv->si->hw;
int i;
for (i = 0; i < priv->num_rx_rings; i++)
enetc_bdr_enable_rxvlan(&priv->si->hw, i, en);
enetc_bdr_enable_rxvlan(hw, i, en);
}
static void enetc_enable_txvlan(struct net_device *ndev, bool en)
{
struct enetc_ndev_priv *priv = netdev_priv(ndev);
struct enetc_hw *hw = &priv->si->hw;
int i;
for (i = 0; i < priv->num_tx_rings; i++)
enetc_bdr_enable_txvlan(&priv->si->hw, i, en);
enetc_bdr_enable_txvlan(hw, i, en);
}
void enetc_set_features(struct net_device *ndev, netdev_features_t features)

9
drivers/net/ethernet/freescale/enetc/enetc.h
View File

@ -467,19 +467,20 @@ int enetc_set_psfp(struct net_device *ndev, bool en);
static inline void enetc_get_max_cap(struct enetc_ndev_priv *priv)
{
struct enetc_hw *hw = &priv->si->hw;
u32 reg;
reg = enetc_port_rd(&priv->si->hw, ENETC_PSIDCAPR);
reg = enetc_port_rd(hw, ENETC_PSIDCAPR);
priv->psfp_cap.max_streamid = reg & ENETC_PSIDCAPR_MSK;
/* Port stream filter capability */
reg = enetc_port_rd(&priv->si->hw, ENETC_PSFCAPR);
reg = enetc_port_rd(hw, ENETC_PSFCAPR);
priv->psfp_cap.max_psfp_filter = reg & ENETC_PSFCAPR_MSK;
/* Port stream gate capability */
reg = enetc_port_rd(&priv->si->hw, ENETC_PSGCAPR);
reg = enetc_port_rd(hw, ENETC_PSGCAPR);
priv->psfp_cap.max_psfp_gate = (reg & ENETC_PSGCAPR_SGIT_MSK);
priv->psfp_cap.max_psfp_gatelist = (reg & ENETC_PSGCAPR_GCL_MSK) >> 16;
/* Port flow meter capability */
reg = enetc_port_rd(&priv->si->hw, ENETC_PFMCAPR);
reg = enetc_port_rd(hw, ENETC_PFMCAPR);
priv->psfp_cap.max_psfp_meter = reg & ENETC_PFMCAPR_MSK;
}

60
drivers/net/ethernet/freescale/enetc/enetc_qos.c
View File

@ -17,8 +17,9 @@ static u16 enetc_get_max_gcl_len(struct enetc_hw *hw)
void enetc_sched_speed_set(struct enetc_ndev_priv *priv, int speed)
{
struct enetc_hw *hw = &priv->si->hw;
u32 old_speed = priv->speed;
u32 pspeed;
u32 pspeed, tmp;
if (speed == old_speed)
return;
@ -39,16 +40,15 @@ void enetc_sched_speed_set(struct enetc_ndev_priv *priv, int speed)
}
priv->speed = speed;
enetc_port_wr(&priv->si->hw, ENETC_PMR,
(enetc_port_rd(&priv->si->hw, ENETC_PMR)
& (~ENETC_PMR_PSPEED_MASK))
| pspeed);
tmp = enetc_port_rd(hw, ENETC_PMR);
enetc_port_wr(hw, ENETC_PMR, (tmp & ~ENETC_PMR_PSPEED_MASK) | pspeed);
}
static int enetc_setup_taprio(struct net_device *ndev,
struct tc_taprio_qopt_offload *admin_conf)
{
struct enetc_ndev_priv *priv = netdev_priv(ndev);
struct enetc_hw *hw = &priv->si->hw;
struct enetc_cbd cbd = {.cmd = 0};
struct tgs_gcl_conf *gcl_config;
struct tgs_gcl_data *gcl_data;
@ -61,15 +61,13 @@ static int enetc_setup_taprio(struct net_device *ndev,
int err;
int i;
if (admin_conf->num_entries > enetc_get_max_gcl_len(&priv->si->hw))
if (admin_conf->num_entries > enetc_get_max_gcl_len(hw))
return -EINVAL;
gcl_len = admin_conf->num_entries;
tge = enetc_rd(&priv->si->hw, ENETC_QBV_PTGCR_OFFSET);
tge = enetc_rd(hw, ENETC_QBV_PTGCR_OFFSET);
if (!admin_conf->enable) {
enetc_wr(&priv->si->hw,
ENETC_QBV_PTGCR_OFFSET,
tge & (~ENETC_QBV_TGE));
enetc_wr(hw, ENETC_QBV_PTGCR_OFFSET, tge & ~ENETC_QBV_TGE);
priv->active_offloads &= ~ENETC_F_QBV;
@ -117,14 +115,11 @@ static int enetc_setup_taprio(struct net_device *ndev,
cbd.cls = BDCR_CMD_PORT_GCL;
cbd.status_flags = 0;
enetc_wr(&priv->si->hw, ENETC_QBV_PTGCR_OFFSET,
tge | ENETC_QBV_TGE);
enetc_wr(hw, ENETC_QBV_PTGCR_OFFSET, tge | ENETC_QBV_TGE);
err = enetc_send_cmd(priv->si, &cbd);
if (err)
enetc_wr(&priv->si->hw,
ENETC_QBV_PTGCR_OFFSET,
tge & (~ENETC_QBV_TGE));
enetc_wr(hw, ENETC_QBV_PTGCR_OFFSET, tge & ~ENETC_QBV_TGE);
enetc_cbd_free_data_mem(priv->si, data_size, tmp, &dma);
@ -138,6 +133,7 @@ int enetc_setup_tc_taprio(struct net_device *ndev, void *type_data)
{
struct tc_taprio_qopt_offload *taprio = type_data;
struct enetc_ndev_priv *priv = netdev_priv(ndev);
struct enetc_hw *hw = &priv->si->hw;
int err;
int i;
@ -147,16 +143,14 @@ int enetc_setup_tc_taprio(struct net_device *ndev, void *type_data)
return -EBUSY;
for (i = 0; i < priv->num_tx_rings; i++)
enetc_set_bdr_prio(&priv->si->hw,
priv->tx_ring[i]->index,
enetc_set_bdr_prio(hw, priv->tx_ring[i]->index,
taprio->enable ? i : 0);
err = enetc_setup_taprio(ndev, taprio);
if (err)
for (i = 0; i < priv->num_tx_rings; i++)
enetc_set_bdr_prio(&priv->si->hw,
priv->tx_ring[i]->index,
enetc_set_bdr_prio(hw, priv->tx_ring[i]->index,
taprio->enable ? 0 : i);
return err;
@ -178,7 +172,7 @@ int enetc_setup_tc_cbs(struct net_device *ndev, void *type_data)
struct tc_cbs_qopt_offload *cbs = type_data;
u32 port_transmit_rate = priv->speed;
u8 tc_nums = netdev_get_num_tc(ndev);
struct enetc_si *si = priv->si;
struct enetc_hw *hw = &priv->si->hw;
u32 hi_credit_bit, hi_credit_reg;
u32 max_interference_size;
u32 port_frame_max_size;
@ -199,15 +193,15 @@ int enetc_setup_tc_cbs(struct net_device *ndev, void *type_data)
* lower than this TC have been disabled.
*/
if (tc == prio_top &&
enetc_get_cbs_enable(&si->hw, prio_next)) {
enetc_get_cbs_enable(hw, prio_next)) {
dev_err(&ndev->dev,
"Disable TC%d before disable TC%d\n",
prio_next, tc);
return -EINVAL;
}
enetc_port_wr(&si->hw, ENETC_PTCCBSR1(tc), 0);
enetc_port_wr(&si->hw, ENETC_PTCCBSR0(tc), 0);
enetc_port_wr(hw, ENETC_PTCCBSR1(tc), 0);
enetc_port_wr(hw, ENETC_PTCCBSR0(tc), 0);
return 0;
}
@ -224,13 +218,13 @@ int enetc_setup_tc_cbs(struct net_device *ndev, void *type_data)
* higher than this TC have been enabled.
*/
if (tc == prio_next) {
if (!enetc_get_cbs_enable(&si->hw, prio_top)) {
if (!enetc_get_cbs_enable(hw, prio_top)) {
dev_err(&ndev->dev,
"Enable TC%d first before enable TC%d\n",
prio_top, prio_next);
return -EINVAL;
}
bw_sum += enetc_get_cbs_bw(&si->hw, prio_top);
bw_sum += enetc_get_cbs_bw(hw, prio_top);
}
if (bw_sum + bw >= 100) {
@ -239,7 +233,7 @@ int enetc_setup_tc_cbs(struct net_device *ndev, void *type_data)
return -EINVAL;
}
enetc_port_rd(&si->hw, ENETC_PTCMSDUR(tc));
enetc_port_rd(hw, ENETC_PTCMSDUR(tc));
/* For top prio TC, the max_interfrence_size is maxSizedFrame.
*
@ -259,8 +253,8 @@ int enetc_setup_tc_cbs(struct net_device *ndev, void *type_data)
u32 m0, ma, r0, ra;
m0 = port_frame_max_size * 8;
ma = enetc_port_rd(&si->hw, ENETC_PTCMSDUR(prio_top)) * 8;
ra = enetc_get_cbs_bw(&si->hw, prio_top) *
ma = enetc_port_rd(hw, ENETC_PTCMSDUR(prio_top)) * 8;
ra = enetc_get_cbs_bw(hw, prio_top) *
port_transmit_rate * 10000ULL;
r0 = port_transmit_rate * 1000000ULL;
max_interference_size = m0 + ma +
@ -280,10 +274,10 @@ int enetc_setup_tc_cbs(struct net_device *ndev, void *type_data)
hi_credit_reg = (u32)div_u64((ENETC_CLK * 100ULL) * hi_credit_bit,
port_transmit_rate * 1000000ULL);
enetc_port_wr(&si->hw, ENETC_PTCCBSR1(tc), hi_credit_reg);
enetc_port_wr(hw, ENETC_PTCCBSR1(tc), hi_credit_reg);
/* Set bw register and enable this traffic class */
enetc_port_wr(&si->hw, ENETC_PTCCBSR0(tc), bw | ENETC_CBSE);
enetc_port_wr(hw, ENETC_PTCCBSR0(tc), bw | ENETC_CBSE);
return 0;
}
@ -293,6 +287,7 @@ int enetc_setup_tc_txtime(struct net_device *ndev, void *type_data)
struct enetc_ndev_priv *priv = netdev_priv(ndev);
struct tc_etf_qopt_offload *qopt = type_data;
u8 tc_nums = netdev_get_num_tc(ndev);
struct enetc_hw *hw = &priv->si->hw;
int tc;
if (!tc_nums)
@ -304,12 +299,11 @@ int enetc_setup_tc_txtime(struct net_device *ndev, void *type_data)
return -EINVAL;
/* TSD and Qbv are mutually exclusive in hardware */
if (enetc_rd(&priv->si->hw, ENETC_QBV_PTGCR_OFFSET) & ENETC_QBV_TGE)
if (enetc_rd(hw, ENETC_QBV_PTGCR_OFFSET) & ENETC_QBV_TGE)
return -EBUSY;
priv->tx_ring[tc]->tsd_enable = qopt->enable;
enetc_port_wr(&priv->si->hw, ENETC_PTCTSDR(tc),
qopt->enable ? ENETC_TSDE : 0);
enetc_port_wr(hw, ENETC_PTCTSDR(tc), qopt->enable ? ENETC_TSDE : 0);
return 0;
}