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net: enetc: save the mode register address inside struct enetc_cbdr

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enetc_clear_cbdr depends on struct enetc_hw because it must disable the
ring through a register write. We'd like to remove that dependency, so
let's do what's already done with the producer and consumer indices,
which is to save the iomem address in a variable kept in struct enetc_cbdr.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Vladimir Oltean 2021-03-10 14:03:43 +02:00 • committed by David S. Miller
parent 24be14e326
commit 27f9025d49
4 changed files with 15 additions and 13 deletions
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4
drivers/net/ethernet/freescale/enetc/enetc.c
View file

@ -1074,7 +1074,7 @@ int enetc_alloc_si_resources(struct enetc_ndev_priv *priv)
return 0;
err_alloc_cls:
enetc_clear_cbdr(&si->hw);
enetc_clear_cbdr(&si->cbd_ring);
enetc_free_cbdr(&si->cbd_ring);
return err;
@ -1084,7 +1084,7 @@ void enetc_free_si_resources(struct enetc_ndev_priv *priv)
{
struct enetc_si *si = priv->si;
enetc_clear_cbdr(&si->hw);
enetc_clear_cbdr(&si->cbd_ring);
enetc_free_cbdr(&si->cbd_ring);
kfree(priv->cls_rules);

3
drivers/net/ethernet/freescale/enetc/enetc.h
View file

@ -98,6 +98,7 @@ struct enetc_cbdr {
void *bd_base; /* points to Rx or Tx BD ring */
void __iomem *pir;
void __iomem *cir;
void __iomem *mr; /* mode register */
int bd_count; /* # of BDs */
int next_to_use;
@ -314,7 +315,7 @@ void enetc_set_ethtool_ops(struct net_device *ndev);
int enetc_setup_cbdr(struct device *dev, struct enetc_hw *hw,
struct enetc_cbdr *cbdr);
void enetc_free_cbdr(struct enetc_cbdr *cbdr);
void enetc_clear_cbdr(struct enetc_hw *hw);
void enetc_clear_cbdr(struct enetc_cbdr *cbdr);
int enetc_set_mac_flt_entry(struct enetc_si *si, int index,
char *mac_addr, int si_map);
int enetc_clear_mac_flt_entry(struct enetc_si *si, int index);

19
drivers/net/ethernet/freescale/enetc/enetc_cbdr.c
View file

@ -24,6 +24,10 @@ int enetc_setup_cbdr(struct device *dev, struct enetc_hw *hw,
cbdr->next_to_use = 0;
cbdr->dma_dev = dev;
cbdr->pir = hw->reg + ENETC_SICBDRPIR;
cbdr->cir = hw->reg + ENETC_SICBDRCIR;
cbdr->mr = hw->reg + ENETC_SICBDRMR;
/* set CBDR cache attributes */
enetc_wr(hw, ENETC_SICAR2,
ENETC_SICAR_RD_COHERENT | ENETC_SICAR_WR_COHERENT);
@ -32,14 +36,10 @@ int enetc_setup_cbdr(struct device *dev, struct enetc_hw *hw,
enetc_wr(hw, ENETC_SICBDRBAR1, upper_32_bits(cbdr->bd_dma_base));
enetc_wr(hw, ENETC_SICBDRLENR, ENETC_RTBLENR_LEN(cbdr->bd_count));
enetc_wr(hw, ENETC_SICBDRPIR, 0);
enetc_wr(hw, ENETC_SICBDRCIR, 0);
enetc_wr_reg(cbdr->pir, cbdr->next_to_clean);
enetc_wr_reg(cbdr->cir, cbdr->next_to_use);
/* enable ring */
enetc_wr(hw, ENETC_SICBDRMR, BIT(31));
cbdr->pir = hw->reg + ENETC_SICBDRPIR;
cbdr->cir = hw->reg + ENETC_SICBDRCIR;
enetc_wr_reg(cbdr->mr, BIT(31));
return 0;
}
@ -54,9 +54,10 @@ void enetc_free_cbdr(struct enetc_cbdr *cbdr)
cbdr->dma_dev = NULL;
}
void enetc_clear_cbdr(struct enetc_hw *hw)
void enetc_clear_cbdr(struct enetc_cbdr *cbdr)
{
enetc_wr(hw, ENETC_SICBDRMR, 0);
/* disable ring */
enetc_wr_reg(cbdr->mr, 0);
}
static void enetc_clean_cbdr(struct enetc_cbdr *ring)

2
drivers/net/ethernet/freescale/enetc/enetc_pf.c
View file

@ -1095,7 +1095,7 @@ static void enetc_init_unused_port(struct enetc_si *si)
enetc_init_port_rfs_memory(si);
enetc_init_port_rss_memory(si);
enetc_clear_cbdr(hw);
enetc_clear_cbdr(&si->cbd_ring);
enetc_free_cbdr(&si->cbd_ring);
}