net: ethernet: mtk_eth_soc: convert ring dma pointer to void

Simplify the code converting {tx,rx} ring dma pointer to void

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
index 9169f63..64c201e 100644 (file)
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
@@ -917,18 +917,15 @@ static int mtk_init_fq_dma(struct mtk_eth *eth)
        return 0;
 }
 
-static inline void *mtk_qdma_phys_to_virt(struct mtk_tx_ring *ring, u32 desc)
+static void *mtk_qdma_phys_to_virt(struct mtk_tx_ring *ring, u32 desc)
 {
-       void *ret = ring->dma;
-
-       return ret + (desc - ring->phys);
+       return ring->dma + (desc - ring->phys);
 }
 
 static struct mtk_tx_buf *mtk_desc_to_tx_buf(struct mtk_tx_ring *ring,
-                                            struct mtk_tx_dma *txd,
-                                            u32 txd_size)
+                                            void *txd, u32 txd_size)
 {
-       int idx = ((void *)txd - (void *)ring->dma) / txd_size;
+       int idx = (txd - ring->dma) / txd_size;
 
        return &ring->buf[idx];
 }
@@ -936,13 +933,12 @@ static struct mtk_tx_buf *mtk_desc_to_tx_buf(struct mtk_tx_ring *ring,
 static struct mtk_tx_dma *qdma_to_pdma(struct mtk_tx_ring *ring,
                                       struct mtk_tx_dma *dma)
 {
-       return ring->dma_pdma - ring->dma + dma;
+       return ring->dma_pdma - (struct mtk_tx_dma *)ring->dma + dma;
 }
 
-static int txd_to_idx(struct mtk_tx_ring *ring, struct mtk_tx_dma *dma,
-                     u32 txd_size)
+static int txd_to_idx(struct mtk_tx_ring *ring, void *dma, u32 txd_size)
 {
-       return ((void *)dma - (void *)ring->dma) / txd_size;
+       return (dma - ring->dma) / txd_size;
 }
 
 static void mtk_tx_unmap(struct mtk_eth *eth, struct mtk_tx_buf *tx_buf,
@@ -1359,7 +1355,7 @@ static struct mtk_rx_ring *mtk_get_rx_ring(struct mtk_eth *eth)
 
                ring = &eth->rx_ring[i];
                idx = NEXT_DESP_IDX(ring->calc_idx, ring->dma_size);
-               rxd = (void *)ring->dma + idx * eth->soc->txrx.rxd_size;
+               rxd = ring->dma + idx * eth->soc->txrx.rxd_size;
                if (rxd->rxd2 & RX_DMA_DONE) {
                        ring->calc_idx_update = true;
                        return ring;
@@ -1411,7 +1407,7 @@ static int mtk_poll_rx(struct napi_struct *napi, int budget,
                        goto rx_done;
 
                idx = NEXT_DESP_IDX(ring->calc_idx, ring->dma_size);
-               rxd = (void *)ring->dma + idx * eth->soc->txrx.rxd_size;
+               rxd = ring->dma + idx * eth->soc->txrx.rxd_size;
                data = ring->data[idx];
 
                if (!mtk_rx_get_desc(eth, &trxd, rxd))
@@ -1615,7 +1611,7 @@ static int mtk_poll_tx_pdma(struct mtk_eth *eth, int budget,
 
                mtk_tx_unmap(eth, tx_buf, true);
 
-               desc = (void *)ring->dma + cpu * eth->soc->txrx.txd_size;
+               desc = ring->dma + cpu * eth->soc->txrx.txd_size;
                ring->last_free = desc;
                atomic_inc(&ring->free_count);
 
@@ -1760,7 +1756,7 @@ static int mtk_tx_alloc(struct mtk_eth *eth)
                int next = (i + 1) % MTK_DMA_SIZE;
                u32 next_ptr = ring->phys + next * sz;
 
-               txd = (void *)ring->dma + i * sz;
+               txd = ring->dma + i * sz;
                txd->txd2 = next_ptr;
                txd->txd3 = TX_DMA_LS0 | TX_DMA_OWNER_CPU;
                txd->txd4 = 0;
@@ -1790,7 +1786,7 @@ static int mtk_tx_alloc(struct mtk_eth *eth)
 
        ring->dma_size = MTK_DMA_SIZE;
        atomic_set(&ring->free_count, MTK_DMA_SIZE - 2);
-       ring->next_free = &ring->dma[0];
+       ring->next_free = ring->dma;
        ring->last_free = (void *)txd;
        ring->last_free_ptr = (u32)(ring->phys + ((MTK_DMA_SIZE - 1) * sz));
        ring->thresh = MAX_SKB_FRAGS;
@@ -1902,7 +1898,7 @@ static int mtk_rx_alloc(struct mtk_eth *eth, int ring_no, int rx_flag)
                if (unlikely(dma_mapping_error(eth->dma_dev, dma_addr)))
                        return -ENOMEM;
 
-               rxd = (void *)ring->dma + i * eth->soc->txrx.rxd_size;
+               rxd = ring->dma + i * eth->soc->txrx.rxd_size;
                rxd->rxd1 = (unsigned int)dma_addr;
 
                if (MTK_HAS_CAPS(eth->soc->caps, MTK_SOC_MT7628))
@@ -1964,7 +1960,7 @@ static void mtk_rx_clean(struct mtk_eth *eth, struct mtk_rx_ring *ring)
                        if (!ring->data[i])
                                continue;
 
-                       rxd = (void *)ring->dma + i * eth->soc->txrx.rxd_size;
+                       rxd = ring->dma + i * eth->soc->txrx.rxd_size;
                        if (!rxd->rxd1)
                                continue;
 

diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.h b/drivers/net/ethernet/mediatek/mtk_eth_soc.h
index 1db5424..f530246 100644 (file)
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.h
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.h
@@ -692,7 +692,7 @@ struct mtk_tx_buf {
  *                     are present
  */
 struct mtk_tx_ring {
-       struct mtk_tx_dma *dma;
+       void *dma;
        struct mtk_tx_buf *buf;
        dma_addr_t phys;
        struct mtk_tx_dma *next_free;
@@ -722,7 +722,7 @@ enum mtk_rx_flags {
  * @calc_idx:          The current head of ring
  */
 struct mtk_rx_ring {
-       struct mtk_rx_dma *dma;
+       void *dma;
        u8 **data;
        dma_addr_t phys;
        u16 frag_size;