net: stmmac: Add GFP_DMA32 for rx buffers if no 64 capability

Use page_pool_alloc_pages instead of page_pool_dev_alloc_pages, which
can give the gfp parameter, in the case of not supporting 64-bit width,
using 32-bit address memory can reduce a copy from swiotlb.

Signed-off-by: David Wu <david.wu@rock-chips.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index da8306f..8ded4be 100644 (file)
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -1461,16 +1461,20 @@ static int stmmac_init_rx_buffers(struct stmmac_priv *priv, struct dma_desc *p,
 {
        struct stmmac_rx_queue *rx_q = &priv->rx_queue[queue];
        struct stmmac_rx_buffer *buf = &rx_q->buf_pool[i];
+       gfp_t gfp = (GFP_ATOMIC | __GFP_NOWARN);
+
+       if (priv->dma_cap.addr64 <= 32)
+               gfp |= GFP_DMA32;
 
        if (!buf->page) {
-               buf->page = page_pool_dev_alloc_pages(rx_q->page_pool);
+               buf->page = page_pool_alloc_pages(rx_q->page_pool, gfp);
                if (!buf->page)
                        return -ENOMEM;
                buf->page_offset = stmmac_rx_offset(priv);
        }
 
        if (priv->sph && !buf->sec_page) {
-               buf->sec_page = page_pool_dev_alloc_pages(rx_q->page_pool);
+               buf->sec_page = page_pool_alloc_pages(rx_q->page_pool, gfp);
                if (!buf->sec_page)
                        return -ENOMEM;
 
@@ -4482,6 +4486,10 @@ static inline void stmmac_rx_refill(struct stmmac_priv *priv, u32 queue)
        struct stmmac_rx_queue *rx_q = &priv->rx_queue[queue];
        int dirty = stmmac_rx_dirty(priv, queue);
        unsigned int entry = rx_q->dirty_rx;
+       gfp_t gfp = (GFP_ATOMIC | __GFP_NOWARN);
+
+       if (priv->dma_cap.addr64 <= 32)
+               gfp |= GFP_DMA32;
 
        while (dirty-- > 0) {
                struct stmmac_rx_buffer *buf = &rx_q->buf_pool[entry];
@@ -4494,13 +4502,13 @@ static inline void stmmac_rx_refill(struct stmmac_priv *priv, u32 queue)
                        p = rx_q->dma_rx + entry;
 
                if (!buf->page) {
-                       buf->page = page_pool_dev_alloc_pages(rx_q->page_pool);
+                       buf->page = page_pool_alloc_pages(rx_q->page_pool, gfp);
                        if (!buf->page)
                                break;
                }
 
                if (priv->sph && !buf->sec_page) {
-                       buf->sec_page = page_pool_dev_alloc_pages(rx_q->page_pool);
+                       buf->sec_page = page_pool_alloc_pages(rx_q->page_pool, gfp);
                        if (!buf->sec_page)
                                break;