net: mvpp2: store physical address of buffer in rx_desc->buf_cookie

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Stefan Roese <sr@denx.de>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>

diff --git a/drivers/net/mvpp2.c b/drivers/net/mvpp2.c
index 90ab6d718b2f9148429c7dfbc2d8faaa1558d59e..17ce0e9f7de39ba321723a73b8758e8b8e4db0e7 100644 (file)
--- a/drivers/net/mvpp2.c
+++ b/drivers/net/mvpp2.c
@@ -2352,20 +2352,25 @@ static inline int mvpp2_bm_cookie_pool_get(unsigned long cookie)
 /* Release buffer to BM */
 static inline void mvpp2_bm_pool_put(struct mvpp2_port *port, int pool,
                                     dma_addr_t buf_dma_addr,
-                                    unsigned long buf_virt_addr)
+                                    unsigned long buf_phys_addr)
 {
-       mvpp2_write(port->priv, MVPP2_BM_VIRT_RLS_REG, buf_virt_addr);
+       /* MVPP2_BM_VIRT_RLS_REG is not interpreted by HW, and simply
+        * returned in the "cookie" field of the RX
+        * descriptor. Instead of storing the virtual address, we
+        * store the physical address
+        */
+       mvpp2_write(port->priv, MVPP2_BM_VIRT_RLS_REG, buf_phys_addr);
        mvpp2_write(port->priv, MVPP2_BM_PHY_RLS_REG(pool), buf_dma_addr);
 }
 
 /* Refill BM pool */
 static void mvpp2_pool_refill(struct mvpp2_port *port, u32 bm,
                              dma_addr_t dma_addr,
-                             u32 cookie)
+                             phys_addr_t phys_addr)
 {
        int pool = mvpp2_bm_cookie_pool_get(bm);
 
-       mvpp2_bm_pool_put(port, pool, dma_addr, cookie);
+       mvpp2_bm_pool_put(port, pool, dma_addr, phys_addr);
 }
 
 /* Allocate buffers for the pool */