From 01121ab73924d355091d9c8a3b593a361ea4a5ae Mon Sep 17 00:00:00 2001 From: Vladimir Oltean Date: Wed, 10 Mar 2021 14:03:41 +0200 Subject: [PATCH] net: enetc: save the DMA device for enetc_free_cbdr We shouldn't need to pass the struct device *dev to enetc CBDR APIs over and over again, so save this inside struct enetc_cbdr::dma_dev and avoid calling it from the enetc_free_cbdr functions. This breaks the dependency of the cbdr API from struct enetc_si (the station interface). Signed-off-by: Vladimir Oltean Signed-off-by: David S. Miller --- drivers/net/ethernet/freescale/enetc/enetc.c | 4 +-- drivers/net/ethernet/freescale/enetc/enetc.h | 3 +- drivers/net/ethernet/freescale/enetc/enetc_cbdr.c | 37 +++++++++++++---------- drivers/net/ethernet/freescale/enetc/enetc_pf.c | 2 +- 4 files changed, 26 insertions(+), 20 deletions(-) diff --git a/drivers/net/ethernet/freescale/enetc/enetc.c b/drivers/net/ethernet/freescale/enetc/enetc.c index 09f7fdbf93a7..2d60af5fcd15 100644 --- a/drivers/net/ethernet/freescale/enetc/enetc.c +++ b/drivers/net/ethernet/freescale/enetc/enetc.c @@ -1077,7 +1077,7 @@ int enetc_alloc_si_resources(struct enetc_ndev_priv *priv) err_alloc_cls: enetc_clear_cbdr(&si->hw); - enetc_free_cbdr(priv->dev, &si->cbd_ring); + enetc_free_cbdr(&si->cbd_ring); return err; } @@ -1087,7 +1087,7 @@ void enetc_free_si_resources(struct enetc_ndev_priv *priv) struct enetc_si *si = priv->si; enetc_clear_cbdr(&si->hw); - enetc_free_cbdr(priv->dev, &si->cbd_ring); + enetc_free_cbdr(&si->cbd_ring); kfree(priv->cls_rules); } diff --git a/drivers/net/ethernet/freescale/enetc/enetc.h b/drivers/net/ethernet/freescale/enetc/enetc.h index 8b380fc13314..b343d1002bb7 100644 --- a/drivers/net/ethernet/freescale/enetc/enetc.h +++ b/drivers/net/ethernet/freescale/enetc/enetc.h @@ -104,6 +104,7 @@ struct enetc_cbdr { int next_to_clean; dma_addr_t bd_dma_base; + struct device *dma_dev; }; #define ENETC_TXBD(BDR, i) (&(((union enetc_tx_bd *)((BDR).bd_base))[i])) @@ -311,7 +312,7 @@ void enetc_set_ethtool_ops(struct net_device *ndev); /* control buffer descriptor ring (CBDR) */ int enetc_alloc_cbdr(struct device *dev, struct enetc_cbdr *cbdr); -void enetc_free_cbdr(struct device *dev, struct enetc_cbdr *cbdr); +void enetc_free_cbdr(struct enetc_cbdr *cbdr); void enetc_setup_cbdr(struct enetc_hw *hw, struct enetc_cbdr *cbdr); void enetc_clear_cbdr(struct enetc_hw *hw); int enetc_set_mac_flt_entry(struct enetc_si *si, int index, diff --git a/drivers/net/ethernet/freescale/enetc/enetc_cbdr.c b/drivers/net/ethernet/freescale/enetc/enetc_cbdr.c index ad6aecda6b47..7e84eb665ecd 100644 --- a/drivers/net/ethernet/freescale/enetc/enetc_cbdr.c +++ b/drivers/net/ethernet/freescale/enetc/enetc_cbdr.c @@ -14,22 +14,26 @@ int enetc_alloc_cbdr(struct device *dev, struct enetc_cbdr *cbdr) /* h/w requires 128B alignment */ if (!IS_ALIGNED(cbdr->bd_dma_base, 128)) { - dma_free_coherent(dev, size, cbdr->bd_base, cbdr->bd_dma_base); + dma_free_coherent(dev, size, cbdr->bd_base, + cbdr->bd_dma_base); return -EINVAL; } cbdr->next_to_clean = 0; cbdr->next_to_use = 0; + cbdr->dma_dev = dev; return 0; } -void enetc_free_cbdr(struct device *dev, struct enetc_cbdr *cbdr) +void enetc_free_cbdr(struct enetc_cbdr *cbdr) { int size = cbdr->bd_count * sizeof(struct enetc_cbd); - dma_free_coherent(dev, size, cbdr->bd_base, cbdr->bd_dma_base); + dma_free_coherent(cbdr->dma_dev, size, cbdr->bd_base, + cbdr->bd_dma_base); cbdr->bd_base = NULL; + cbdr->dma_dev = NULL; } void enetc_setup_cbdr(struct enetc_hw *hw, struct enetc_cbdr *cbdr) @@ -57,9 +61,8 @@ void enetc_clear_cbdr(struct enetc_hw *hw) enetc_wr(hw, ENETC_SICBDRMR, 0); } -static void enetc_clean_cbdr(struct enetc_si *si) +static void enetc_clean_cbdr(struct enetc_cbdr *ring) { - struct enetc_cbdr *ring = &si->cbd_ring; struct enetc_cbd *dest_cbd; int i, status; @@ -69,7 +72,7 @@ static void enetc_clean_cbdr(struct enetc_si *si) dest_cbd = ENETC_CBD(*ring, i); status = dest_cbd->status_flags & ENETC_CBD_STATUS_MASK; if (status) - dev_warn(&si->pdev->dev, "CMD err %04x for cmd %04x\n", + dev_warn(ring->dma_dev, "CMD err %04x for cmd %04x\n", status, dest_cbd->cmd); memset(dest_cbd, 0, sizeof(*dest_cbd)); @@ -97,7 +100,7 @@ int enetc_send_cmd(struct enetc_si *si, struct enetc_cbd *cbd) return -EIO; if (unlikely(!enetc_cbd_unused(ring))) - enetc_clean_cbdr(si); + enetc_clean_cbdr(ring); i = ring->next_to_use; dest_cbd = ENETC_CBD(*ring, i); @@ -123,7 +126,7 @@ int enetc_send_cmd(struct enetc_si *si, struct enetc_cbd *cbd) /* CBD may writeback data, feedback up level */ *cbd = *dest_cbd; - enetc_clean_cbdr(si); + enetc_clean_cbdr(ring); return 0; } @@ -171,6 +174,7 @@ int enetc_set_mac_flt_entry(struct enetc_si *si, int index, int enetc_set_fs_entry(struct enetc_si *si, struct enetc_cmd_rfse *rfse, int index) { + struct enetc_cbdr *ring = &si->cbd_ring; struct enetc_cbd cbd = {.cmd = 0}; dma_addr_t dma, dma_align; void *tmp, *tmp_align; @@ -183,10 +187,10 @@ int enetc_set_fs_entry(struct enetc_si *si, struct enetc_cmd_rfse *rfse, cbd.length = cpu_to_le16(sizeof(*rfse)); cbd.opt[3] = cpu_to_le32(0); /* SI */ - tmp = dma_alloc_coherent(&si->pdev->dev, sizeof(*rfse) + RFSE_ALIGN, + tmp = dma_alloc_coherent(ring->dma_dev, sizeof(*rfse) + RFSE_ALIGN, &dma, GFP_KERNEL); if (!tmp) { - dev_err(&si->pdev->dev, "DMA mapping of RFS entry failed!\n"); + dev_err(ring->dma_dev, "DMA mapping of RFS entry failed!\n"); return -ENOMEM; } @@ -199,9 +203,9 @@ int enetc_set_fs_entry(struct enetc_si *si, struct enetc_cmd_rfse *rfse, err = enetc_send_cmd(si, &cbd); if (err) - dev_err(&si->pdev->dev, "FS entry add failed (%d)!", err); + dev_err(ring->dma_dev, "FS entry add failed (%d)!", err); - dma_free_coherent(&si->pdev->dev, sizeof(*rfse) + RFSE_ALIGN, + dma_free_coherent(ring->dma_dev, sizeof(*rfse) + RFSE_ALIGN, tmp, dma); return err; @@ -211,6 +215,7 @@ int enetc_set_fs_entry(struct enetc_si *si, struct enetc_cmd_rfse *rfse, static int enetc_cmd_rss_table(struct enetc_si *si, u32 *table, int count, bool read) { + struct enetc_cbdr *ring = &si->cbd_ring; struct enetc_cbd cbd = {.cmd = 0}; dma_addr_t dma, dma_align; u8 *tmp, *tmp_align; @@ -220,10 +225,10 @@ static int enetc_cmd_rss_table(struct enetc_si *si, u32 *table, int count, /* HW only takes in a full 64 entry table */ return -EINVAL; - tmp = dma_alloc_coherent(&si->pdev->dev, count + RSSE_ALIGN, + tmp = dma_alloc_coherent(ring->dma_dev, count + RSSE_ALIGN, &dma, GFP_KERNEL); if (!tmp) { - dev_err(&si->pdev->dev, "DMA mapping of RSS table failed!\n"); + dev_err(ring->dma_dev, "DMA mapping of RSS table failed!\n"); return -ENOMEM; } dma_align = ALIGN(dma, RSSE_ALIGN); @@ -243,13 +248,13 @@ static int enetc_cmd_rss_table(struct enetc_si *si, u32 *table, int count, err = enetc_send_cmd(si, &cbd); if (err) - dev_err(&si->pdev->dev, "RSS cmd failed (%d)!", err); + dev_err(ring->dma_dev, "RSS cmd failed (%d)!", err); if (read) for (i = 0; i < count; i++) table[i] = tmp_align[i]; - dma_free_coherent(&si->pdev->dev, count + RSSE_ALIGN, tmp, dma); + dma_free_coherent(ring->dma_dev, count + RSSE_ALIGN, tmp, dma); return err; } diff --git a/drivers/net/ethernet/freescale/enetc/enetc_pf.c b/drivers/net/ethernet/freescale/enetc/enetc_pf.c index 224fc37a6757..a7195ec736f3 100644 --- a/drivers/net/ethernet/freescale/enetc/enetc_pf.c +++ b/drivers/net/ethernet/freescale/enetc/enetc_pf.c @@ -1098,7 +1098,7 @@ static void enetc_init_unused_port(struct enetc_si *si) enetc_init_port_rss_memory(si); enetc_clear_cbdr(hw); - enetc_free_cbdr(dev, &si->cbd_ring); + enetc_free_cbdr(&si->cbd_ring); } static int enetc_pf_probe(struct pci_dev *pdev, -- 2.11.0