Commit d0225e7d authored by Alexandre TORGUE's avatar Alexandre TORGUE Committed by David S. Miller

stmmac: rework the routines to show the ring status

To avoid lot of check in stmmac_main for display ring management
and support the GMAC4 chip, the display_ring function is moved
into dedicated descriptor file.
Signed-off-by: default avatarAlexandre TORGUE <alexandre.torgue@st.com>
Signed-off-by: default avatarGiuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent f10a6a35
......@@ -380,6 +380,8 @@ struct stmmac_desc_ops {
u64(*get_timestamp) (void *desc, u32 ats);
/* get rx timestamp status */
int (*get_rx_timestamp_status) (void *desc, u32 ats);
/* Display ring */
void (*display_ring)(void *head, unsigned int size, bool rx);
};
extern const struct stmmac_desc_ops enh_desc_ops;
......
......@@ -411,6 +411,26 @@ static int enh_desc_get_rx_timestamp_status(void *desc, u32 ats)
}
}
static void enh_desc_display_ring(void *head, unsigned int size, bool rx)
{
struct dma_extended_desc *ep = (struct dma_extended_desc *)head;
int i;
pr_info("Extended %s descriptor ring:\n", rx ? "RX" : "TX");
for (i = 0; i < size; i++) {
u64 x;
x = *(u64 *)ep;
pr_info("%d [0x%x]: 0x%x 0x%x 0x%x 0x%x\n",
i, (unsigned int)virt_to_phys(ep),
(unsigned int)x, (unsigned int)(x >> 32),
ep->basic.des2, ep->basic.des3);
ep++;
}
pr_info("\n");
}
const struct stmmac_desc_ops enh_desc_ops = {
.tx_status = enh_desc_get_tx_status,
.rx_status = enh_desc_get_rx_status,
......@@ -430,4 +450,5 @@ const struct stmmac_desc_ops enh_desc_ops = {
.get_tx_timestamp_status = enh_desc_get_tx_timestamp_status,
.get_timestamp = enh_desc_get_timestamp,
.get_rx_timestamp_status = enh_desc_get_rx_timestamp_status,
.display_ring = enh_desc_display_ring,
};
......@@ -279,6 +279,26 @@ static int ndesc_get_rx_timestamp_status(void *desc, u32 ats)
return 1;
}
static void ndesc_display_ring(void *head, unsigned int size, bool rx)
{
struct dma_desc *p = (struct dma_desc *)head;
int i;
pr_info("%s descriptor ring:\n", rx ? "RX" : "TX");
for (i = 0; i < size; i++) {
u64 x;
x = *(u64 *)p;
pr_info("%d [0x%x]: 0x%x 0x%x 0x%x 0x%x",
i, (unsigned int)virt_to_phys(p),
(unsigned int)x, (unsigned int)(x >> 32),
p->des2, p->des3);
p++;
}
pr_info("\n");
}
const struct stmmac_desc_ops ndesc_ops = {
.tx_status = ndesc_get_tx_status,
.rx_status = ndesc_get_rx_status,
......@@ -297,4 +317,5 @@ const struct stmmac_desc_ops ndesc_ops = {
.get_tx_timestamp_status = ndesc_get_tx_timestamp_status,
.get_timestamp = ndesc_get_timestamp,
.get_rx_timestamp_status = ndesc_get_rx_timestamp_status,
.display_ring = ndesc_display_ring,
};
......@@ -877,53 +877,22 @@ static int stmmac_init_phy(struct net_device *dev)
return 0;
}
/**
* stmmac_display_ring - display ring
* @head: pointer to the head of the ring passed.
* @size: size of the ring.
* @extend_desc: to verify if extended descriptors are used.
* Description: display the control/status and buffer descriptors.
*/
static void stmmac_display_ring(void *head, int size, int extend_desc)
{
int i;
struct dma_extended_desc *ep = (struct dma_extended_desc *)head;
struct dma_desc *p = (struct dma_desc *)head;
for (i = 0; i < size; i++) {
u64 x;
if (extend_desc) {
x = *(u64 *) ep;
pr_info("%d [0x%x]: 0x%x 0x%x 0x%x 0x%x\n",
i, (unsigned int)virt_to_phys(ep),
(unsigned int)x, (unsigned int)(x >> 32),
ep->basic.des2, ep->basic.des3);
ep++;
} else {
x = *(u64 *) p;
pr_info("%d [0x%x]: 0x%x 0x%x 0x%x 0x%x",
i, (unsigned int)virt_to_phys(p),
(unsigned int)x, (unsigned int)(x >> 32),
p->des2, p->des3);
p++;
}
pr_info("\n");
}
}
static void stmmac_display_rings(struct stmmac_priv *priv)
{
void *head_rx, *head_tx;
if (priv->extend_desc) {
pr_info("Extended RX descriptor ring:\n");
stmmac_display_ring((void *)priv->dma_erx, DMA_RX_SIZE, 1);
pr_info("Extended TX descriptor ring:\n");
stmmac_display_ring((void *)priv->dma_etx, DMA_TX_SIZE, 1);
head_rx = (void *)priv->dma_erx;
head_tx = (void *)priv->dma_etx;
} else {
pr_info("RX descriptor ring:\n");
stmmac_display_ring((void *)priv->dma_rx, DMA_RX_SIZE, 0);
pr_info("TX descriptor ring:\n");
stmmac_display_ring((void *)priv->dma_tx, DMA_TX_SIZE, 0);
head_rx = (void *)priv->dma_rx;
head_tx = (void *)priv->dma_tx;
}
/* Display Rx ring */
priv->hw->desc->display_ring(head_rx, DMA_RX_SIZE, true);
/* Display Tx ring */
priv->hw->desc->display_ring(head_tx, DMA_TX_SIZE, false);
}
static int stmmac_set_bfsize(int mtu, int bufsize)
......@@ -1990,16 +1959,18 @@ static netdev_tx_t stmmac_xmit(struct sk_buff *skb, struct net_device *dev)
priv->cur_tx = entry;
if (netif_msg_pktdata(priv)) {
void *tx_head;
pr_debug("%s: curr=%d dirty=%d f=%d, e=%d, first=%p, nfrags=%d",
__func__, priv->cur_tx, priv->dirty_tx, first_entry,
entry, first, nfrags);
if (priv->extend_desc)
stmmac_display_ring((void *)priv->dma_etx,
DMA_TX_SIZE, 1);
tx_head = (void *)priv->dma_etx;
else
stmmac_display_ring((void *)priv->dma_tx,
DMA_TX_SIZE, 0);
tx_head = (void *)priv->dma_tx;
priv->hw->desc->display_ring(tx_head, DMA_TX_SIZE, false);
pr_debug(">>> frame to be transmitted: ");
print_pkt(skb->data, skb->len);
......@@ -2184,13 +2155,15 @@ static int stmmac_rx(struct stmmac_priv *priv, int limit)
int coe = priv->hw->rx_csum;
if (netif_msg_rx_status(priv)) {
void *rx_head;
pr_debug("%s: descriptor ring:\n", __func__);
if (priv->extend_desc)
stmmac_display_ring((void *)priv->dma_erx,
DMA_RX_SIZE, 1);
rx_head = (void *)priv->dma_erx;
else
stmmac_display_ring((void *)priv->dma_rx,
DMA_RX_SIZE, 0);
rx_head = (void *)priv->dma_rx;
priv->hw->desc->display_ring(rx_head, DMA_RX_SIZE, true);
}
while (count < limit) {
int status;
......
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