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net: stmmac: Add support to Ethtool get/set ring parameters

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This patch add support to --show-ring & --set-ring Ethtool functions:
- Adding min, max, power of two check to new ring parameter's value.
- Bring down the network interface before changing the value of ring
  parameters.
- Bring up the network interface after changing the value of ring
  parameters.

Signed-off-by: Song, Yoong Siang <yoong.siang.song@intel.com>
Signed-off-by: Voon Weifeng <weifeng.voon@intel.com>
Signed-off-by: Ong Boon Leong <boon.leong.ong@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Song, Yoong Siang 2020-09-16 15:40:20 +08:00 committed by David S. Miller
parent 18e9a40732
commit aa042f60e4
7 changed files with 132 additions and 59 deletions
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7
drivers/net/ethernet/stmicro/stmmac/chain_mode.c
View file

@ -46,7 +46,7 @@ static int jumbo_frm(void *p, struct sk_buff *skb, int csum)
while (len != 0) {
tx_q->tx_skbuff[entry] = NULL;
entry = STMMAC_GET_ENTRY(entry, DMA_TX_SIZE);
entry = STMMAC_GET_ENTRY(entry, priv->dma_tx_size);
desc = tx_q->dma_tx + entry;
if (len > bmax) {
@ -137,7 +137,7 @@ static void refill_desc3(void *priv_ptr, struct dma_desc *p)
*/
p->des3 = cpu_to_le32((unsigned int)(rx_q->dma_rx_phy +
(((rx_q->dirty_rx) + 1) %
DMA_RX_SIZE) *
priv->dma_rx_size) *
sizeof(struct dma_desc)));
}
@ -154,7 +154,8 @@ static void clean_desc3(void *priv_ptr, struct dma_desc *p)
* to keep explicit chaining in the descriptor.
*/
p->des3 = cpu_to_le32((unsigned int)((tx_q->dma_tx_phy +
((tx_q->dirty_tx + 1) % DMA_TX_SIZE))
((tx_q->dirty_tx + 1) %
priv->dma_tx_size))
* sizeof(struct dma_desc)));
}

13
drivers/net/ethernet/stmicro/stmmac/common.h
View file

@ -42,9 +42,16 @@
#define STMMAC_CHAN0 0 /* Always supported and default for all chips */
/* These need to be power of two, and >= 4 */
#define DMA_TX_SIZE 512
#define DMA_RX_SIZE 512
/* TX and RX Descriptor Length, these need to be power of two.
* TX descriptor length less than 64 may cause transmit queue timed out error.
* RX descriptor length less than 64 may cause inconsistent Rx chain error.
*/
#define DMA_MIN_TX_SIZE 64
#define DMA_MAX_TX_SIZE 1024
#define DMA_DEFAULT_TX_SIZE 512
#define DMA_MIN_RX_SIZE 64
#define DMA_MAX_RX_SIZE 1024
#define DMA_DEFAULT_RX_SIZE 512
#define STMMAC_GET_ENTRY(x, size) ((x + 1) & (size - 1))
#undef FRAME_FILTER_DEBUG

2
drivers/net/ethernet/stmicro/stmmac/ring_mode.c
View file

@ -51,7 +51,7 @@ static int jumbo_frm(void *p, struct sk_buff *skb, int csum)
stmmac_prepare_tx_desc(priv, desc, 1, bmax, csum,
STMMAC_RING_MODE, 0, false, skb->len);
tx_q->tx_skbuff[entry] = NULL;
entry = STMMAC_GET_ENTRY(entry, DMA_TX_SIZE);
entry = STMMAC_GET_ENTRY(entry, priv->dma_tx_size);
if (priv->extend_desc)
desc = (struct dma_desc *)(tx_q->dma_etx + entry);

3
drivers/net/ethernet/stmicro/stmmac/stmmac.h
View file

@ -171,9 +171,11 @@ struct stmmac_priv {
/* RX Queue */
struct stmmac_rx_queue rx_queue[MTL_MAX_RX_QUEUES];
unsigned int dma_rx_size;
/* TX Queue */
struct stmmac_tx_queue tx_queue[MTL_MAX_TX_QUEUES];
unsigned int dma_tx_size;
/* Generic channel for NAPI */
struct stmmac_channel channel[STMMAC_CH_MAX];
@ -265,6 +267,7 @@ int stmmac_dvr_probe(struct device *device,
void stmmac_disable_eee_mode(struct stmmac_priv *priv);
bool stmmac_eee_init(struct stmmac_priv *priv);
int stmmac_reinit_queues(struct net_device *dev, u32 rx_cnt, u32 tx_cnt);
int stmmac_reinit_ringparam(struct net_device *dev, u32 rx_size, u32 tx_size);
#if IS_ENABLED(CONFIG_STMMAC_SELFTESTS)
void stmmac_selftest_run(struct net_device *dev,

29
drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c
View file

@ -440,6 +440,33 @@ static int stmmac_nway_reset(struct net_device *dev)
return phylink_ethtool_nway_reset(priv->phylink);
}
static void stmmac_get_ringparam(struct net_device *netdev,
struct ethtool_ringparam *ring)
{
struct stmmac_priv *priv = netdev_priv(netdev);
ring->rx_max_pending = DMA_MAX_RX_SIZE;
ring->tx_max_pending = DMA_MAX_TX_SIZE;
ring->rx_pending = priv->dma_rx_size;
ring->tx_pending = priv->dma_tx_size;
}
static int stmmac_set_ringparam(struct net_device *netdev,
struct ethtool_ringparam *ring)
{
if (ring->rx_mini_pending || ring->rx_jumbo_pending ||
ring->rx_pending < DMA_MIN_RX_SIZE ||
ring->rx_pending > DMA_MAX_RX_SIZE ||
!is_power_of_2(ring->rx_pending) ||
ring->tx_pending < DMA_MIN_TX_SIZE ||
ring->tx_pending > DMA_MAX_TX_SIZE ||
!is_power_of_2(ring->tx_pending))
return -EINVAL;
return stmmac_reinit_ringparam(netdev, ring->rx_pending,
ring->tx_pending);
}
static void
stmmac_get_pauseparam(struct net_device *netdev,
struct ethtool_pauseparam *pause)
@ -947,6 +974,8 @@ static const struct ethtool_ops stmmac_ethtool_ops = {
.get_regs_len = stmmac_ethtool_get_regs_len,
.get_link = ethtool_op_get_link,
.nway_reset = stmmac_nway_reset,
.get_ringparam = stmmac_get_ringparam,
.set_ringparam = stmmac_set_ringparam,
.get_pauseparam = stmmac_get_pauseparam,
.set_pauseparam = stmmac_set_pauseparam,
.self_test = stmmac_selftest_run,

135
drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
View file

@ -63,8 +63,8 @@ static int phyaddr = -1;
module_param(phyaddr, int, 0444);
MODULE_PARM_DESC(phyaddr, "Physical device address");
#define STMMAC_TX_THRESH (DMA_TX_SIZE / 4)
#define STMMAC_RX_THRESH (DMA_RX_SIZE / 4)
#define STMMAC_TX_THRESH(x) ((x)->dma_tx_size / 4)
#define STMMAC_RX_THRESH(x) ((x)->dma_rx_size / 4)
static int flow_ctrl = FLOW_AUTO;
module_param(flow_ctrl, int, 0644);
@ -271,7 +271,7 @@ static inline u32 stmmac_tx_avail(struct stmmac_priv *priv, u32 queue)
if (tx_q->dirty_tx > tx_q->cur_tx)
avail = tx_q->dirty_tx - tx_q->cur_tx - 1;
else
avail = DMA_TX_SIZE - tx_q->cur_tx + tx_q->dirty_tx - 1;
avail = priv->dma_tx_size - tx_q->cur_tx + tx_q->dirty_tx - 1;
return avail;
}
@ -289,7 +289,7 @@ static inline u32 stmmac_rx_dirty(struct stmmac_priv *priv, u32 queue)
if (rx_q->dirty_rx <= rx_q->cur_rx)
dirty = rx_q->cur_rx - rx_q->dirty_rx;
else
dirty = DMA_RX_SIZE - rx_q->dirty_rx + rx_q->cur_rx;
dirty = priv->dma_rx_size - rx_q->dirty_rx + rx_q->cur_rx;
return dirty;
}
@ -1120,7 +1120,7 @@ static void stmmac_display_rx_rings(struct stmmac_priv *priv)
head_rx = (void *)rx_q->dma_rx;
/* Display RX ring */
stmmac_display_ring(priv, head_rx, DMA_RX_SIZE, true);
stmmac_display_ring(priv, head_rx, priv->dma_rx_size, true);
}
}
@ -1143,7 +1143,7 @@ static void stmmac_display_tx_rings(struct stmmac_priv *priv)
else
head_tx = (void *)tx_q->dma_tx;
stmmac_display_ring(priv, head_tx, DMA_TX_SIZE, false);
stmmac_display_ring(priv, head_tx, priv->dma_tx_size, false);
}
}
@ -1187,16 +1187,16 @@ static void stmmac_clear_rx_descriptors(struct stmmac_priv *priv, u32 queue)
int i;
/* Clear the RX descriptors */
for (i = 0; i < DMA_RX_SIZE; i++)
for (i = 0; i < priv->dma_rx_size; i++)
if (priv->extend_desc)
stmmac_init_rx_desc(priv, &rx_q->dma_erx[i].basic,
priv->use_riwt, priv->mode,
(i == DMA_RX_SIZE - 1),
(i == priv->dma_rx_size - 1),
priv->dma_buf_sz);
else
stmmac_init_rx_desc(priv, &rx_q->dma_rx[i],
priv->use_riwt, priv->mode,
(i == DMA_RX_SIZE - 1),
(i == priv->dma_rx_size - 1),
priv->dma_buf_sz);
}
@ -1213,8 +1213,8 @@ static void stmmac_clear_tx_descriptors(struct stmmac_priv *priv, u32 queue)
int i;
/* Clear the TX descriptors */
for (i = 0; i < DMA_TX_SIZE; i++) {
int last = (i == (DMA_TX_SIZE - 1));
for (i = 0; i < priv->dma_tx_size; i++) {
int last = (i == (priv->dma_tx_size - 1));
struct dma_desc *p;
if (priv->extend_desc)
@ -1368,7 +1368,7 @@ static int init_dma_rx_desc_rings(struct net_device *dev, gfp_t flags)
stmmac_clear_rx_descriptors(priv, queue);
for (i = 0; i < DMA_RX_SIZE; i++) {
for (i = 0; i < priv->dma_rx_size; i++) {
struct dma_desc *p;
if (priv->extend_desc)
@ -1383,16 +1383,18 @@ static int init_dma_rx_desc_rings(struct net_device *dev, gfp_t flags)
}
rx_q->cur_rx = 0;
rx_q->dirty_rx = (unsigned int)(i - DMA_RX_SIZE);
rx_q->dirty_rx = (unsigned int)(i - priv->dma_rx_size);
/* Setup the chained descriptor addresses */
if (priv->mode == STMMAC_CHAIN_MODE) {
if (priv->extend_desc)
stmmac_mode_init(priv, rx_q->dma_erx,
rx_q->dma_rx_phy, DMA_RX_SIZE, 1);
rx_q->dma_rx_phy,
priv->dma_rx_size, 1);
else
stmmac_mode_init(priv, rx_q->dma_rx,
rx_q->dma_rx_phy, DMA_RX_SIZE, 0);
rx_q->dma_rx_phy,
priv->dma_rx_size, 0);
}
}
@ -1406,7 +1408,7 @@ err_init_rx_buffers:
if (queue == 0)
break;
i = DMA_RX_SIZE;
i = priv->dma_rx_size;
queue--;
}
@ -1438,13 +1440,15 @@ static int init_dma_tx_desc_rings(struct net_device *dev)
if (priv->mode == STMMAC_CHAIN_MODE) {
if (priv->extend_desc)
stmmac_mode_init(priv, tx_q->dma_etx,
tx_q->dma_tx_phy, DMA_TX_SIZE, 1);
tx_q->dma_tx_phy,
priv->dma_tx_size, 1);
else if (!(tx_q->tbs & STMMAC_TBS_AVAIL))
stmmac_mode_init(priv, tx_q->dma_tx,
tx_q->dma_tx_phy, DMA_TX_SIZE, 0);
tx_q->dma_tx_phy,
priv->dma_tx_size, 0);
}
for (i = 0; i < DMA_TX_SIZE; i++) {
for (i = 0; i < priv->dma_tx_size; i++) {
struct dma_desc *p;
if (priv->extend_desc)
p = &((tx_q->dma_etx + i)->basic);
@ -1508,7 +1512,7 @@ static void dma_free_rx_skbufs(struct stmmac_priv *priv, u32 queue)
{
int i;
for (i = 0; i < DMA_RX_SIZE; i++)
for (i = 0; i < priv->dma_rx_size; i++)
stmmac_free_rx_buffer(priv, queue, i);
}
@ -1521,7 +1525,7 @@ static void dma_free_tx_skbufs(struct stmmac_priv *priv, u32 queue)
{
int i;
for (i = 0; i < DMA_TX_SIZE; i++)
for (i = 0; i < priv->dma_tx_size; i++)
stmmac_free_tx_buffer(priv, queue, i);
}
@ -1543,11 +1547,11 @@ static void free_dma_rx_desc_resources(struct stmmac_priv *priv)
/* Free DMA regions of consistent memory previously allocated */
if (!priv->extend_desc)
dma_free_coherent(priv->device,
DMA_RX_SIZE * sizeof(struct dma_desc),
dma_free_coherent(priv->device, priv->dma_rx_size *
sizeof(struct dma_desc),
rx_q->dma_rx, rx_q->dma_rx_phy);
else
dma_free_coherent(priv->device, DMA_RX_SIZE *
dma_free_coherent(priv->device, priv->dma_rx_size *
sizeof(struct dma_extended_desc),
rx_q->dma_erx, rx_q->dma_rx_phy);
@ -1586,7 +1590,7 @@ static void free_dma_tx_desc_resources(struct stmmac_priv *priv)
addr = tx_q->dma_tx;
}
size *= DMA_TX_SIZE;
size *= priv->dma_tx_size;
dma_free_coherent(priv->device, size, addr, tx_q->dma_tx_phy);
@ -1619,7 +1623,7 @@ static int alloc_dma_rx_desc_resources(struct stmmac_priv *priv)
rx_q->priv_data = priv;
pp_params.flags = PP_FLAG_DMA_MAP;
pp_params.pool_size = DMA_RX_SIZE;
pp_params.pool_size = priv->dma_rx_size;
num_pages = DIV_ROUND_UP(priv->dma_buf_sz, PAGE_SIZE);
pp_params.order = ilog2(num_pages);
pp_params.nid = dev_to_node(priv->device);
@ -1633,14 +1637,16 @@ static int alloc_dma_rx_desc_resources(struct stmmac_priv *priv)
goto err_dma;
}
rx_q->buf_pool = kcalloc(DMA_RX_SIZE, sizeof(*rx_q->buf_pool),
rx_q->buf_pool = kcalloc(priv->dma_rx_size,
sizeof(*rx_q->buf_pool),
GFP_KERNEL);
if (!rx_q->buf_pool)
goto err_dma;
if (priv->extend_desc) {
rx_q->dma_erx = dma_alloc_coherent(priv->device,
DMA_RX_SIZE * sizeof(struct dma_extended_desc),
priv->dma_rx_size *
sizeof(struct dma_extended_desc),
&rx_q->dma_rx_phy,
GFP_KERNEL);
if (!rx_q->dma_erx)
@ -1648,7 +1654,8 @@ static int alloc_dma_rx_desc_resources(struct stmmac_priv *priv)
} else {
rx_q->dma_rx = dma_alloc_coherent(priv->device,
DMA_RX_SIZE * sizeof(struct dma_desc),
priv->dma_rx_size *
sizeof(struct dma_desc),
&rx_q->dma_rx_phy,
GFP_KERNEL);
if (!rx_q->dma_rx)
@ -1687,13 +1694,13 @@ static int alloc_dma_tx_desc_resources(struct stmmac_priv *priv)
tx_q->queue_index = queue;
tx_q->priv_data = priv;
tx_q->tx_skbuff_dma = kcalloc(DMA_TX_SIZE,
tx_q->tx_skbuff_dma = kcalloc(priv->dma_tx_size,
sizeof(*tx_q->tx_skbuff_dma),
GFP_KERNEL);
if (!tx_q->tx_skbuff_dma)
goto err_dma;
tx_q->tx_skbuff = kcalloc(DMA_TX_SIZE,
tx_q->tx_skbuff = kcalloc(priv->dma_tx_size,
sizeof(struct sk_buff *),
GFP_KERNEL);
if (!tx_q->tx_skbuff)
@ -1706,7 +1713,7 @@ static int alloc_dma_tx_desc_resources(struct stmmac_priv *priv)
else
size = sizeof(struct dma_desc);
size *= DMA_TX_SIZE;
size *= priv->dma_tx_size;
addr = dma_alloc_coherent(priv->device, size,
&tx_q->dma_tx_phy, GFP_KERNEL);
@ -2016,7 +2023,7 @@ static int stmmac_tx_clean(struct stmmac_priv *priv, int budget, u32 queue)
stmmac_release_tx_desc(priv, p, priv->mode);
entry = STMMAC_GET_ENTRY(entry, DMA_TX_SIZE);
entry = STMMAC_GET_ENTRY(entry, priv->dma_tx_size);
}
tx_q->dirty_tx = entry;
@ -2025,7 +2032,7 @@ static int stmmac_tx_clean(struct stmmac_priv *priv, int budget, u32 queue)
if (unlikely(netif_tx_queue_stopped(netdev_get_tx_queue(priv->dev,
queue))) &&
stmmac_tx_avail(priv, queue) > STMMAC_TX_THRESH) {
stmmac_tx_avail(priv, queue) > STMMAC_TX_THRESH(priv)) {
netif_dbg(priv, tx_done, priv->dev,
"%s: restart transmit\n", __func__);
@ -2298,7 +2305,8 @@ static int stmmac_init_dma_engine(struct stmmac_priv *priv)
rx_q->dma_rx_phy, chan);
rx_q->rx_tail_addr = rx_q->dma_rx_phy +
(DMA_RX_SIZE * sizeof(struct dma_desc));
(priv->dma_rx_size *
sizeof(struct dma_desc));
stmmac_set_rx_tail_ptr(priv, priv->ioaddr,
rx_q->rx_tail_addr, chan);
}
@ -2382,12 +2390,12 @@ static void stmmac_set_rings_length(struct stmmac_priv *priv)
/* set TX ring length */
for (chan = 0; chan < tx_channels_count; chan++)
stmmac_set_tx_ring_len(priv, priv->ioaddr,
(DMA_TX_SIZE - 1), chan);
(priv->dma_tx_size - 1), chan);
/* set RX ring length */
for (chan = 0; chan < rx_channels_count; chan++)
stmmac_set_rx_ring_len(priv, priv->ioaddr,
(DMA_RX_SIZE - 1), chan);
(priv->dma_rx_size - 1), chan);
}
/**
@ -2767,6 +2775,11 @@ static int stmmac_open(struct net_device *dev)
priv->rx_copybreak = STMMAC_RX_COPYBREAK;
if (!priv->dma_tx_size)
priv->dma_tx_size = DMA_DEFAULT_TX_SIZE;
if (!priv->dma_rx_size)
priv->dma_rx_size = DMA_DEFAULT_RX_SIZE;
/* Earlier check for TBS */
for (chan = 0; chan < priv->plat->tx_queues_to_use; chan++) {
struct stmmac_tx_queue *tx_q = &priv->tx_queue[chan];
@ -2936,7 +2949,7 @@ static bool stmmac_vlan_insert(struct stmmac_priv *priv, struct sk_buff *skb,
return false;
stmmac_set_tx_owner(priv, p);
tx_q->cur_tx = STMMAC_GET_ENTRY(tx_q->cur_tx, DMA_TX_SIZE);
tx_q->cur_tx = STMMAC_GET_ENTRY(tx_q->cur_tx, priv->dma_tx_size);
return true;
}
@ -2964,7 +2977,8 @@ static void stmmac_tso_allocator(struct stmmac_priv *priv, dma_addr_t des,
while (tmp_len > 0) {
dma_addr_t curr_addr;
tx_q->cur_tx = STMMAC_GET_ENTRY(tx_q->cur_tx, DMA_TX_SIZE);
tx_q->cur_tx = STMMAC_GET_ENTRY(tx_q->cur_tx,
priv->dma_tx_size);
WARN_ON(tx_q->tx_skbuff[tx_q->cur_tx]);
if (tx_q->tbs & STMMAC_TBS_AVAIL)
@ -3071,7 +3085,8 @@ static netdev_tx_t stmmac_tso_xmit(struct sk_buff *skb, struct net_device *dev)
stmmac_set_mss(priv, mss_desc, mss);
tx_q->mss = mss;
tx_q->cur_tx = STMMAC_GET_ENTRY(tx_q->cur_tx, DMA_TX_SIZE);
tx_q->cur_tx = STMMAC_GET_ENTRY(tx_q->cur_tx,
priv->dma_tx_size);
WARN_ON(tx_q->tx_skbuff[tx_q->cur_tx]);
}
@ -3178,7 +3193,7 @@ static netdev_tx_t stmmac_tso_xmit(struct sk_buff *skb, struct net_device *dev)
* ndo_start_xmit will fill this descriptor the next time it's
* called and stmmac_tx_clean may clean up to this descriptor.
*/
tx_q->cur_tx = STMMAC_GET_ENTRY(tx_q->cur_tx, DMA_TX_SIZE);
tx_q->cur_tx = STMMAC_GET_ENTRY(tx_q->cur_tx, priv->dma_tx_size);
if (unlikely(stmmac_tx_avail(priv, queue) <= (MAX_SKB_FRAGS + 1))) {
netif_dbg(priv, hw, priv->dev, "%s: stop transmitted packets\n",
@ -3341,7 +3356,7 @@ static netdev_tx_t stmmac_xmit(struct sk_buff *skb, struct net_device *dev)
int len = skb_frag_size(frag);
bool last_segment = (i == (nfrags - 1));
entry = STMMAC_GET_ENTRY(entry, DMA_TX_SIZE);
entry = STMMAC_GET_ENTRY(entry, priv->dma_tx_size);
WARN_ON(tx_q->tx_skbuff[entry]);
if (likely(priv->extend_desc))
@ -3409,7 +3424,7 @@ static netdev_tx_t stmmac_xmit(struct sk_buff *skb, struct net_device *dev)
* ndo_start_xmit will fill this descriptor the next time it's
* called and stmmac_tx_clean may clean up to this descriptor.
*/
entry = STMMAC_GET_ENTRY(entry, DMA_TX_SIZE);
entry = STMMAC_GET_ENTRY(entry, priv->dma_tx_size);
tx_q->cur_tx = entry;
if (netif_msg_pktdata(priv)) {
@ -3594,7 +3609,7 @@ static inline void stmmac_rx_refill(struct stmmac_priv *priv, u32 queue)
dma_wmb();
stmmac_set_rx_owner(priv, p, use_rx_wd);
entry = STMMAC_GET_ENTRY(entry, DMA_RX_SIZE);
entry = STMMAC_GET_ENTRY(entry, priv->dma_rx_size);
}
rx_q->dirty_rx = entry;
rx_q->rx_tail_addr = rx_q->dma_rx_phy +
@ -3677,7 +3692,7 @@ static int stmmac_rx(struct stmmac_priv *priv, int limit, u32 queue)
else
rx_head = (void *)rx_q->dma_rx;
stmmac_display_ring(priv, rx_head, DMA_RX_SIZE, true);
stmmac_display_ring(priv, rx_head, priv->dma_rx_size, true);
}
while (count < limit) {
unsigned int buf1_len = 0, buf2_len = 0;
@ -3719,7 +3734,8 @@ read_again:
if (unlikely(status & dma_own))
break;
rx_q->cur_rx = STMMAC_GET_ENTRY(rx_q->cur_rx, DMA_RX_SIZE);
rx_q->cur_rx = STMMAC_GET_ENTRY(rx_q->cur_rx,
priv->dma_rx_size);
next_entry = rx_q->cur_rx;
if (priv->extend_desc)
@ -3894,7 +3910,7 @@ static int stmmac_napi_poll_tx(struct napi_struct *napi, int budget)
priv->xstats.napi_poll++;
work_done = stmmac_tx_clean(priv, DMA_TX_SIZE, chan);
work_done = stmmac_tx_clean(priv, priv->dma_tx_size, chan);
work_done = min(work_done, budget);
if (work_done < budget && napi_complete_done(napi, work_done)) {
@ -4287,11 +4303,11 @@ static int stmmac_rings_status_show(struct seq_file *seq, void *v)
if (priv->extend_desc) {
seq_printf(seq, "Extended descriptor ring:\n");
sysfs_display_ring((void *)rx_q->dma_erx,
DMA_RX_SIZE, 1, seq);
priv->dma_rx_size, 1, seq);
} else {
seq_printf(seq, "Descriptor ring:\n");
sysfs_display_ring((void *)rx_q->dma_rx,
DMA_RX_SIZE, 0, seq);
priv->dma_rx_size, 0, seq);
}
}
@ -4303,11 +4319,11 @@ static int stmmac_rings_status_show(struct seq_file *seq, void *v)
if (priv->extend_desc) {
seq_printf(seq, "Extended descriptor ring:\n");
sysfs_display_ring((void *)tx_q->dma_etx,
DMA_TX_SIZE, 1, seq);
priv->dma_tx_size, 1, seq);
} else if (!(tx_q->tbs & STMMAC_TBS_AVAIL)) {
seq_printf(seq, "Descriptor ring:\n");
sysfs_display_ring((void *)tx_q->dma_tx,
DMA_TX_SIZE, 0, seq);
priv->dma_tx_size, 0, seq);
}
}
@ -4778,6 +4794,23 @@ int stmmac_reinit_queues(struct net_device *dev, u32 rx_cnt, u32 tx_cnt)
return ret;
}
int stmmac_reinit_ringparam(struct net_device *dev, u32 rx_size, u32 tx_size)
{
struct stmmac_priv *priv = netdev_priv(dev);
int ret = 0;
if (netif_running(dev))
stmmac_release(dev);
priv->dma_rx_size = rx_size;
priv->dma_tx_size = tx_size;
if (netif_running(dev))
ret = stmmac_open(dev);
return ret;
}
/**
* stmmac_dvr_probe
* @device: device pointer

2
drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c
View file

@ -796,7 +796,7 @@ static int stmmac_test_flowctrl(struct stmmac_priv *priv)
u32 tail;
tail = priv->rx_queue[i].dma_rx_phy +
(DMA_RX_SIZE * sizeof(struct dma_desc));
(priv->dma_rx_size * sizeof(struct dma_desc));
stmmac_set_rx_tail_ptr(priv, priv->ioaddr, tail, i);
stmmac_start_rx(priv, priv->ioaddr, i);