net: stmmac: Let descriptor code get skbuff address

Stop using if conditions depending on the GMAC version for getting the
descriptor skbuff address and use instead a helper implemented in the
descriptor files.

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Joao Pinto <jpinto@synopsys.com>
Cc: Vitor Soares <soares@synopsys.com>
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4_descs.c b/drivers/net/ethernet/stmicro/stmmac/dwmac4_descs.c
index 63f869c..20299f6 100644 (file)
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac4_descs.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4_descs.c
@@ -424,6 +424,11 @@ static void dwmac4_set_mss_ctxt(struct dma_desc *p, unsigned int mss)
        p->des3 = cpu_to_le32(TDES3_CONTEXT_TYPE | TDES3_CTXT_TCMSSV);
 }
 
+static void dwmac4_get_addr(struct dma_desc *p, unsigned int *addr)
+{
+       *addr = le32_to_cpu(p->des0);
+}
+
 static void dwmac4_set_addr(struct dma_desc *p, dma_addr_t addr)
 {
        p->des0 = cpu_to_le32(addr);
@@ -459,6 +464,7 @@ const struct stmmac_desc_ops dwmac4_desc_ops = {
        .init_tx_desc = dwmac4_rd_init_tx_desc,
        .display_ring = dwmac4_display_ring,
        .set_mss = dwmac4_set_mss_ctxt,
+       .get_addr = dwmac4_get_addr,
        .set_addr = dwmac4_set_addr,
        .clear = dwmac4_clear,
 };

diff --git a/drivers/net/ethernet/stmicro/stmmac/enh_desc.c b/drivers/net/ethernet/stmicro/stmmac/enh_desc.c
index 743a60f..77914c8 100644 (file)
--- a/drivers/net/ethernet/stmicro/stmmac/enh_desc.c
+++ b/drivers/net/ethernet/stmicro/stmmac/enh_desc.c
@@ -437,6 +437,11 @@ static void enh_desc_display_ring(void *head, unsigned int size, bool rx)
        pr_info("\n");
 }
 
+static void enh_desc_get_addr(struct dma_desc *p, unsigned int *addr)
+{
+       *addr = le32_to_cpu(p->des2);
+}
+
 static void enh_desc_set_addr(struct dma_desc *p, dma_addr_t addr)
 {
        p->des2 = cpu_to_le32(addr);
@@ -467,6 +472,7 @@ const struct stmmac_desc_ops enh_desc_ops = {
        .get_timestamp = enh_desc_get_timestamp,
        .get_rx_timestamp_status = enh_desc_get_rx_timestamp_status,
        .display_ring = enh_desc_display_ring,
+       .get_addr = enh_desc_get_addr,
        .set_addr = enh_desc_set_addr,
        .clear = enh_desc_clear,
 };

diff --git a/drivers/net/ethernet/stmicro/stmmac/hwif.h b/drivers/net/ethernet/stmicro/stmmac/hwif.h
index 06b5e5b..f499a7f 100644 (file)
--- a/drivers/net/ethernet/stmicro/stmmac/hwif.h
+++ b/drivers/net/ethernet/stmicro/stmmac/hwif.h
@@ -79,6 +79,8 @@ struct stmmac_desc_ops {
        void (*display_ring)(void *head, unsigned int size, bool rx);
        /* set MSS via context descriptor */
        void (*set_mss)(struct dma_desc *p, unsigned int mss);
+       /* get descriptor skbuff address */
+       void (*get_addr)(struct dma_desc *p, unsigned int *addr);
        /* set descriptor skbuff address */
        void (*set_addr)(struct dma_desc *p, dma_addr_t addr);
        /* clear descriptor */
@@ -127,6 +129,8 @@ struct stmmac_desc_ops {
        stmmac_do_void_callback(__priv, desc, display_ring, __args)
 #define stmmac_set_mss(__priv, __args...) \
        stmmac_do_void_callback(__priv, desc, set_mss, __args)
+#define stmmac_get_desc_addr(__priv, __args...) \
+       stmmac_do_void_callback(__priv, desc, get_addr, __args)
 #define stmmac_set_desc_addr(__priv, __args...) \
        stmmac_do_void_callback(__priv, desc, set_addr, __args)
 #define stmmac_clear_desc(__priv, __args...) \

diff --git a/drivers/net/ethernet/stmicro/stmmac/norm_desc.c b/drivers/net/ethernet/stmicro/stmmac/norm_desc.c
index 2facdb5..de65bb2 100644 (file)
--- a/drivers/net/ethernet/stmicro/stmmac/norm_desc.c
+++ b/drivers/net/ethernet/stmicro/stmmac/norm_desc.c
@@ -297,6 +297,11 @@ static void ndesc_display_ring(void *head, unsigned int size, bool rx)
        pr_info("\n");
 }
 
+static void ndesc_get_addr(struct dma_desc *p, unsigned int *addr)
+{
+       *addr = le32_to_cpu(p->des2);
+}
+
 static void ndesc_set_addr(struct dma_desc *p, dma_addr_t addr)
 {
        p->des2 = cpu_to_le32(addr);
@@ -326,6 +331,7 @@ const struct stmmac_desc_ops ndesc_ops = {
        .get_timestamp = ndesc_get_timestamp,
        .get_rx_timestamp_status = ndesc_get_rx_timestamp_status,
        .display_ring = ndesc_display_ring,
+       .get_addr = ndesc_get_addr,
        .set_addr = ndesc_set_addr,
        .clear = ndesc_clear,
 };

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index 35ccf3f..f2687ec 100644 (file)
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -3350,11 +3350,7 @@ static int stmmac_rx(struct stmmac_priv *priv, int limit, u32 queue)
                        int frame_len;
                        unsigned int des;
 
-                       if (unlikely(priv->synopsys_id >= DWMAC_CORE_4_00))
-                               des = le32_to_cpu(p->des0);
-                       else
-                               des = le32_to_cpu(p->des2);
-
+                       stmmac_get_desc_addr(priv, p, &des);
                        frame_len = stmmac_get_rx_frame_len(priv, p, coe);
 
                        /*  If frame length is greater than skb buffer size